FN Thomson Reuters Web of Science™
VR 1.0
PT J
AU Hittinger, CT
AF Hittinger, Chris Todd
TI Saccharomyces diversity and evolution: a budding model genus
SO TRENDS IN GENETICS
LA English
DT Review
DE Saccharomyces; evolution; population genomics; model genus; life cycle;
   gene network
ID MISMATCH REPAIR SYSTEM; SENSU-STRICTO; REPRODUCTIVE ISOLATION;
   FRUCTOSE/H+ SYMPORTER; POPULATION GENOMICS; ADAPTIVE EVOLUTION; YEAST
   POPULATIONS; CEREVISIAE EC1118; NATURAL HYBRIDS; PARADOXUS
AB Saccharomyces cerevisiae is one of the best-understood and most powerful genetic model systems. Several disciplines are now converging to turn Saccharomyces into an exciting model genus for evolutionary genetics and genomics. Yeast taxonomists and ecologists have dramatically expanded and clarified Saccharomyces diversity, more than doubling the number of bona fide species since 2000. High-quality genome sequences are available (or soon will be) for all seven known species. Haploid laboratory strains are enabling a deep integration of classic genetic approaches with modern genomic tools. Population genomic surveys and quantitative trait mapping of variation within species are underway across the genus. Finally, several case studies have illuminated general and novel genetic mechanisms of evolution. Expanding strain collections, low-cost genome sequencing, and tools for precise genetic manipulation promise to usher in a golden era for this surprisingly diverse genus as an evolutionary model.
C1 Univ Wisconsin, DOE Great Lakes Bioenergy Res Ctr, Wisconsin Bioenergy Initiat, Genet Lab,Genome Ctr Wisconsin, Madison, WI 53706 USA.
RP Hittinger, CT (reprint author), Univ Wisconsin, DOE Great Lakes Bioenergy Res Ctr, Wisconsin Bioenergy Initiat, Genet Lab,Genome Ctr Wisconsin, Madison, WI 53706 USA.
EM cthittinger@wisc.edu
NR 100
TC 48
Z9 49
U1 1
U2 70
PU ELSEVIER SCIENCE LONDON
PI LONDON
PA 84 THEOBALDS RD, LONDON WC1X 8RR, ENGLAND
SN 0168-9525
J9 TRENDS GENET
JI Trends Genet.
PD MAY
PY 2013
VL 29
IS 5
BP 309
EP 317
DI 10.1016/j.tig.2013.01.002
PG 9
WC Genetics & Heredity
SC Genetics & Heredity
GA 149HH
UT WOS:000319309100005
PM 23395329
ER

PT J
AU Perumalla, KS
   Protopopescu, VA
AF Perumalla, Kalyan S.
   Protopopescu, Vladimir A.
TI Reversible Simulations of Elastic Collisions
SO ACM TRANSACTIONS ON MODELING AND COMPUTER SIMULATION
LA English
DT Article
DE Reverse execution; billiards; conservation laws; phase space coverage;
   reversible pseudorandom; time warp
ID MOLECULAR-DYNAMICS; PARTICLE; SYSTEMS
AB Consider a system of N identical hard spherical particles moving in a d-dimensional box and undergoing elastic, possibly multiparticle, collisions. We develop a new algorithm that recovers the precollision state from the post-collision state of the system, across a series of consecutive collisions, with essentially no memory overhead. The challenge in achieving reversibility for an n-particle collision (where, in general, n << N) arises from the presence of nd - d - 1 degrees of freedom (arbitrary angles) during each collision, as well as from the complex geometrical constraints placed on the colliding particles. To reverse the collisions in a traditional simulation setting, all of the particular realizations of these degrees of freedom (angles) during the forward simulation must be tracked. This requires memory proportional to the number of collisions, which grows very fast with N and d, thereby severely limiting the de facto applicability of the scheme. This limitation is addressed here by first performing a pseudorandomization of angles, which ensures determinism in the reverse path for any values of n and d. To address the more difficult problem of geometrical and dynamic constraints, a new approach is developed which correctly samples the constrained phase space. Upon combining the pseudorandomization with correct phase space sampling, perfect reversibility of collisions is achieved, as illustrated for n <= 3, d = 2, and n = 2, d = 3. This result enables, for the first time, reversible simulations of elastic collisions with essentially zero memory accumulation. In principle, the approach presented here could be generalized to larger values of n. The reverse computation methodology presented here uncovers important issues of irreversibility in conventional models, and the difficulties encountered in arriving at a reversible model for one of the most basic and widely used physical system processes, namely, elastic collisions for hard spheres. Insights and solution methodologies, with regard to accurate phase space coverage with reversible random sampling proposed in this context, can help serve as models and/or starting points for other reversible simulations.
C1 [Perumalla, Kalyan S.; Protopopescu, Vladimir A.] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
RP Perumalla, KS (reprint author), Oak Ridge Natl Lab, Computat Sci & Engn Div, 1 Bethel Valley Rd, Oak Ridge, TN 37831 USA.
EM perumallaks@ornl.gov
OI Perumalla, Kalyan/0000-0002-7458-0832
FU U.S. Department of Energy [DE-AC05-00OR22725]
FX This article has been authored by UT-Battelle, LLC, under contract
   DE-AC05-00OR22725 with the U.S. Department of Energy.
NR 30
TC 2
Z9 2
U1 0
U2 10
PU ASSOC COMPUTING MACHINERY
PI NEW YORK
PA 2 PENN PLAZA, STE 701, NEW YORK, NY 10121-0701 USA
SN 1049-3301
EI 1558-1195
J9 ACM T MODEL COMPUT S
JI ACM Trans. Model. Comput. Simul.
PD MAY
PY 2013
VL 23
IS 2
AR 12
DI 10.1145/2457459.2457461
PG 25
WC Computer Science, Interdisciplinary Applications; Mathematics, Applied
SC Computer Science; Mathematics
GA 144MO
UT WOS:000318944000002
ER

PT J
AU Ratcliff, EL
   Garcia, A
   Paniagua, SA
   Cowan, SR
   Giordano, AJ
   Ginley, DS
   Marder, SR
   Berry, JJ
   Olson, DC
AF Ratcliff, Erin L.
   Garcia, Andres
   Paniagua, Sergio A.
   Cowan, Sarah R.
   Giordano, Anthony J.
   Ginley, David S.
   Marder, Seth R.
   Berry, Joseph J.
   Olson, Dana C.
TI Investigating the Influence of Interfacial Contact Properties on Open
   Circuit Voltages in Organic Photovoltaic Performance: Work Function
   Versus Selectivity
SO ADVANCED ENERGY MATERIALS
LA English
DT Article
DE interlayer; work function; selectivity; OPV; PCDTBT
ID INDIUM-TIN OXIDE; HETEROJUNCTION SOLAR-CELLS; SELF-ASSEMBLED MONOLAYERS;
   CHARGE-TRANSFER; CONVERSION EFFICIENCY; TRANSPORT LAYERS; DEVICES;
   ENERGY; RECOMBINATION; ELECTRODES
AB The role of work function and thermodynamic selectivity of hole collecting contacts on the origin of open circuit voltage (VOC) in bulk heterojunction organic photovoltaics is examined for poly(N-9-heptadecanyl-2,7-carbazole-alt-5,5-(4,7-di-2-thienyl-2,1,3-benzothiadiazole) (PCDTBT) and [6,6]-phenyl-C71 butyric acid methyl ester (PC71BM) solar cells. In the absence of a charge selective, electron blocking contact, systematic variation of the work function of the contact directly dictates the VOC, as defined by the energetic separation between the relative Fermi levels for holes and electrons, with little change in the observed dark saturation current, J0. Improving the charge selectivity of the contact through an increased barrier to electron injection from the fullerene in the blend into the hole contact results in a decreased reverse saturation current (decreased J0 and increased shunt resistance, RSH) and improved VOC. Based on these observations, we provide a set of contact design criteria for tuning the VOC in bulk heterojunction organic photovoltaics.
C1 [Ratcliff, Erin L.] Univ Arizona, Dept Chem & Biochem, Tucson, AZ 85721 USA.
   [Garcia, Andres; Cowan, Sarah R.; Ginley, David S.; Berry, Joseph J.; Olson, Dana C.] Natl Renewable Energy Lab, Natl Ctr Photovolta, Golden, CO 80401 USA.
   [Paniagua, Sergio A.; Giordano, Anthony J.; Marder, Seth R.] Georgia Tech Univ, Dept Chem & Biochem, Atlanta, GA 30332 USA.
   [Paniagua, Sergio A.; Giordano, Anthony J.; Marder, Seth R.] Georgia Tech Univ, Ctr Organ Photon & Elect, Atlanta, GA 30332 USA.
RP Ratcliff, EL (reprint author), Univ Arizona, Dept Chem & Biochem, 1306 E Univ Blvd, Tucson, AZ 85721 USA.
EM ratcliff@email.arizona.edu; Dana.Olson@nrel.gov
FU U.S. Department of Energy, Office of Science, Office of Basic Energy
   Sciences [DE-SC0001084]; EERE Postdoctoral Research Fellowship; National
   Defense Science and Engineering Graduate Fellowship program; NSF
   [DGE-0644493]
FX Erin L. Ratcliff and Andres Garcia experimentally contributed equally to
   this work. This work was supported as part of the Center for Interface
   Science: Solar Electric Materials, an Energy Frontier Research Center
   funded by the U.S. Department of Energy, Office of Science, Office of
   Basic Energy Sciences under Award Number DE-SC0001084. SRC acknowledges
   funding from the EERE Postdoctoral Research Fellowship. AJG acknowledges
   funding from the National Defense Science and Engineering Graduate
   Fellowship program and NSF graduate research fellowship DGE-0644493.
NR 84
TC 71
Z9 71
U1 7
U2 198
PU WILEY-V C H VERLAG GMBH
PI WEINHEIM
PA BOSCHSTRASSE 12, D-69469 WEINHEIM, GERMANY
SN 1614-6832
EI 1614-6840
J9 ADV ENERGY MATER
JI Adv. Energy Mater.
PD MAY
PY 2013
VL 3
IS 5
BP 647
EP 656
DI 10.1002/aenm.201200669
PG 10
WC Chemistry, Physical; Energy & Fuels; Materials Science,
   Multidisciplinary; Physics, Applied; Physics, Condensed Matter
SC Chemistry; Energy & Fuels; Materials Science; Physics
GA 141YC
UT WOS:000318761500014
ER

PT J
AU Blau, PJ
AF Blau, Peter J.
TI Role of Friction in Materials Selection for Automotive Applications
SO ADVANCED MATERIALS & PROCESSES
LA English
DT Article
C1 Oak Ridge Natl Lab, Mat Sci & Technol Div, Oak Ridge, TN 37831 USA.
RP Blau, PJ (reprint author), Oak Ridge Natl Lab, Mat Sci & Technol Div, POB 2008,MS 6063, Oak Ridge, TN 37831 USA.
EM blaupj@ornl.gov
FU UT-Battelle LLC [DE-AC05-00OR22725]
FX This manuscript was authored by UT-Battelle LLC under Contract No.
   DE-AC05-00OR22725 with the U.S. Department of Energy.
NR 10
TC 0
Z9 0
U1 0
U2 5
PU ASM INT
PI MATERIALS PARK
PA SUBSCRIPTIONS SPECIALIST CUSTOMER SERVICE, MATERIALS PARK, OH 44073-0002
   USA
SN 0882-7958
J9 ADV MATER PROCESS
JI Adv. Mater. Process.
PD MAY
PY 2013
VL 171
IS 5
BP 23
EP 26
PG 4
WC Materials Science, Multidisciplinary
SC Materials Science
GA 143TP
UT WOS:000318891400002
ER

PT J
AU Mialitsin, AV
   Mascarenhas, A
AF Mialitsin, Aleksej V.
   Mascarenhas, Angelo
TI Raman Scattering Signature of a Localized-to-Delocalized Transition at
   the Inception of a Dilute Abnormal GaAs1-xNx Alloy
SO APPLIED PHYSICS EXPRESS
LA English
DT Article
AB We identify the signature of a localized-to-delocalized transition in the resonant Raman scattering spectra from GaAs1-xNx. Our measurements in the ultradilute nitrogen doping concentrations demonstrate an energy shift in the line width resonance of the LO phonon. With decreasing nitrogen concentration, the E-W line width resonance energy reduces abruptly by ca. 47 meV at x approximate to 0.35%. This value corresponds to the concentration at which GaAs1-xNx has been recently shown to transition from an impurity regime to an alloy regime. Our study elucidates the evolution of dilute abnormal alloys and their Raman response. (c) 2013 The Japan Society of Applied Physics
C1 [Mialitsin, Aleksej V.; Mascarenhas, Angelo] Natl Renewable Energy Lab, Golden, CO 80401 USA.
RP Mialitsin, AV (reprint author), Natl Renewable Energy Lab, Golden, CO 80401 USA.
EM aleksej.mialitsin@nrel.gov
OI Mialitsin, Aleksej/0000-0002-7033-5119
NR 15
TC 1
Z9 1
U1 0
U2 9
PU JAPAN SOC APPLIED PHYSICS
PI TOKYO
PA KUDAN-KITA BUILDING 5TH FLOOR, 1-12-3 KUDAN-KITA, CHIYODA-KU, TOKYO,
   102-0073, JAPAN
SN 1882-0778
J9 APPL PHYS EXPRESS
JI Appl. Phys. Express
PD MAY
PY 2013
VL 6
IS 5
AR 052401
DI 10.7567/APEX.6.052401
PG 3
WC Physics, Applied
SC Physics
GA 142EH
UT WOS:000318778800017
ER

PT J
AU Sullivan, TS
   McBride, MB
   Thies, JE
AF Sullivan, Tarah S.
   McBride, Murray B.
   Thies, Janice E.
TI Rhizosphere microbial community and Zn uptake by willow (Salix purpurea
   L.) depend on soil sulfur concentrations in metalliferous peat soils
SO APPLIED SOIL ECOLOGY
LA English
DT Article
DE Sulfate; znS; Sulfur oxidation; Salix purpurea L.; S-biogeochemistry;
   Heavy metal uptake
ID EUROPEAN SOILS; T-RFLP; ZINC; DIVERSITY; COPPER; BACTERIA; CADMIUM;
   IRON; DISSOLUTION; SULFIDE
AB On numerous occasions, rhizosphere microbial activities have been identified as a key factor in metal phytoavailability to various plant species and in phytoremediation of metal-contaminated sites. For soil bioremediation efforts in heavy metal contaminated areas, microbes adapted to higher concentrations of heavy metals are required. This study was a field survey undertaken to examine rhizosphere microbial communities and biogeochemistry of soils associated with Zn accumulation by indigenous willows (Salix purpurea L.) in the naturally metalliferous peat soils located near Elba, NY. Soil and willow leaf samples were Collected from seven points, at intervals 18 m apart along a willow hedgerow, on four different dates during the growing season. Soil bacterial community composition was characterized by terminal restriction fragment length polymorphism (T-RFLP) analysis and a 16S clone library was created from the rhizosphere of willows and soils containing the highest concentrations of Zn. Bacterial community composition was correlated with soil sulfate, but not with soil pH. The clone library revealed comparable phylogenetic associations to those found in other heavy metal-contaminated soils, and was dominated by affiliations within the phyla Acidobacteria (32%), and Proteobacteria (37%), and the remaining clones were associated with a wide array of phyla including Actinobacteria, Gemmatimonadetes, Planctomycetes, Verrucomicrobia, Bacteriodetes, and Cyanobacteria. Diverse microbial populations were present in both rhizosphere and bulk soils of these naturally metalliferous peat soils with community composition highly correlated to the soil sulfate cycle throughout the growing season indicative of a sulfur-oxidizing rhizosphere microbial community. Results confirm the importance of soil characterization for informing bioremediation efforts in heavy metal contaminated areas and the reciprocity that microbial communities uniquely adapted to specific conditions and heavy metals may have on an ecosystem. (C) 2013 Elsevier B.V. All rights reserved.
C1 [Sullivan, Tarah S.; McBride, Murray B.; Thies, Janice E.] Cornell Univ, Dept Crop & Soil Sci, Ithaca, NY 14853 USA.
RP Sullivan, TS (reprint author), Oak Ridge Natl Lab, Biosci Div, Bldg 1505,MS-6038, Oak Ridge, TN 37831 USA.
EM tarah_sullivan@yahoo.com
RI Thies, Janice/A-5074-2014
FU NSF [EAR-0311934]; EPA STAR [FP916841]
FX We gratefully acknowledge the Thies and Buckley laboratory members at
   Cornell University for assistance with analyses and data management.
   This research was supported in part by NSF Award No. EAR-0311934 and EPA
   STAR Award No. FP916841.
NR 61
TC 6
Z9 6
U1 1
U2 65
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0929-1393
J9 APPL SOIL ECOL
JI Appl. Soil Ecol.
PD MAY
PY 2013
VL 67
BP 53
EP 60
DI 10.1016/j.apsoil.2013.02.003
PG 8
WC Soil Science
SC Agriculture
GA 142ZM
UT WOS:000318836100007
ER

PT J
AU Hastbacka, M
   Ponoum, R
   Bouza, A
AF Hastbacka, Mildred
   Ponoum, Ratcharit
   Bouza, Antonio
TI Monitoring & Control
SO ASHRAE JOURNAL
LA English
DT Editorial Material
C1 [Hastbacka, Mildred] TIAX LLC, Lexington, MA USA.
   [Ponoum, Ratcharit] TIAX LLC, Elect Syst Grp, Lexington, MA USA.
   [Bouza, Antonio] US DOE, Washington, DC 20585 USA.
RP Hastbacka, M (reprint author), TIAX LLC, Lexington, MA USA.
NR 12
TC 0
Z9 0
U1 0
U2 1
PU AMER SOC HEATING REFRIGERATING AIR-CONDITIONING ENG, INC,
PI ATLANTA
PA 1791 TULLIE CIRCLE NE, ATLANTA, GA 30329 USA
SN 0001-2491
J9 ASHRAE J
JI ASHRAE J.
PD MAY
PY 2013
VL 55
IS 5
BP 92
EP 94
PG 3
WC Thermodynamics; Construction & Building Technology; Engineering,
   Mechanical
SC Thermodynamics; Construction & Building Technology; Engineering
GA 144TD
UT WOS:000318962400018
ER

PT J
AU Argo, AM
   Tan, ECD
   Inman, D
   Langholtz, MH
   Eaton, LM
   Jacobson, JJ
   Wright, CT
   Muth, DJ
   Wu, MM
   Chiu, YW
   Graham, RL
AF Argo, Andrew M.
   Tan, Eric C. D.
   Inman, Daniel
   Langholtz, Matt H.
   Eaton, Laurence M.
   Jacobson, Jacob J.
   Wright, Christopher T.
   Muth, David J., Jr.
   Wu, May M.
   Chiu, Yi-Wen
   Graham, Robin L.
TI Investigation of biochemical biorefinery sizing and environmental
   sustainability impacts for conventional bale system and advanced uniform
   biomass logistics designs
SO BIOFUELS BIOPRODUCTS & BIOREFINING-BIOFPR
LA English
DT Article
DE biochemical ethanol process; biorefinery size; advanced uniform format;
   conventional bale system; LCA; water footprint
ID MISSISSIPPI RIVER-BASIN; WATER-QUALITY; UNITED-STATES; PATHWAYS; STREAMS
AB The 2011 US Billion-Ton Update1 estimates that there are enough agricultural and forest resources to sustainably provide enough biomass to displace approximately 30% of the country's current petroleum consumption. A portion of these resources are inaccessible at current cost targets with conventional feedstock supply systems because of their remoteness or low yields. Reliable analyses and projections of US biofuels production depend on assumptions about the supply system and biorefinery capacity, which, in turn, depend on economics, feedstock logistics, and sustainability. A cross-functional team has examined optimal combinations of advances in feedstock supply systems and biorefinery capacities with rigorous design information, improved crop yield and agronomic practices, and improved estimates of sustainable biomass availability. Biochemical-conversion-to-ethanol is analyzed for conventional bale-based system and advanced uniform-format feedstock supply system designs. The latter involves pre-processing' biomass into a higher-density, aerobically stable, easily transportable format that can supply large-scale biorefineries. Feedstock supply costs, logistics and processing costs are analyzed and compared, taking into account environmental sustainability metrics. (c) 2013 Society of Chemical Industry and John Wiley & Sons Ltd
C1 [Argo, Andrew M.] Natl Renewable Energy Lab, Syst Integrat Grp, Golden, CO USA.
   [Tan, Eric C. D.] Natl Renewable Energy Lab, Biorefinery Anal Grp, Natl Bioenergy Ctr, Golden, CO USA.
   [Inman, Daniel] Natl Renewable Energy Lab, Golden, CO USA.
   [Langholtz, Matt H.] Oak Ridge Natl Lab, Bioenergy Grp, Oak Ridge, TN USA.
   [Eaton, Laurence M.] Oak Ridge Natl Lab, Div Environm Sci, Bioenergy Resource & Engn Syst Grp, Oak Ridge, TN 37831 USA.
   [Jacobson, Jacob J.; Muth, David J., Jr.] Idaho Natl Lab, Idaho Falls, ID 83415 USA.
   [Wright, Christopher T.] Idaho Natl Lab, Biofuels & Renewable Energy Dept, Idaho Falls, ID 83415 USA.
   [Wu, May M.] Argonne Natl Lab, Argonne, IL 60439 USA.
   [Chiu, Yi-Wen] Argonne Natl Lab, Div Energy Syst, Argonne, IL 60439 USA.
   [Graham, Robin L.] Argonne Natl Lab, Comp Environm & Life Sci Directorate, Argonne, IL 60439 USA.
RP Jacobson, JJ (reprint author), Idaho Natl Lab, 2525 N Fremont Ave, Idaho Falls, ID 83415 USA.
EM jacob.jacobson@inl.gov
RI Eaton, Laurence/E-1471-2012
OI Eaton, Laurence/0000-0003-1270-9626
FU US Department of Energy
FX We thank the US Department of Energy for funding and supporting this
   work.
NR 35
TC 16
Z9 16
U1 4
U2 31
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 1932-104X
J9 BIOFUEL BIOPROD BIOR
JI Biofuels Bioprod. Biorefining
PD MAY-JUN
PY 2013
VL 7
IS 3
BP 282
EP 302
DI 10.1002/bbb.1391
PG 21
WC Biotechnology & Applied Microbiology; Energy & Fuels
SC Biotechnology & Applied Microbiology; Energy & Fuels
GA 142EP
UT WOS:000318779600010
ER

PT J
AU Ebeida, MS
   Mahmoud, AH
   Awad, MA
   Mohammed, MA
   Mitchell, SA
   Rand, A
   Owens, JD
AF Ebeida, Mohamed S.
   Mahmoud, Ahmed H.
   Awad, Muhammad A.
   Mohammed, Mohammed A.
   Mitchell, Scott A.
   Rand, Alexander
   Owens, John D.
TI Sifted Disks
SO COMPUTER GRAPHICS FORUM
LA English
DT Article
DE I; 3; 5 [Computing Methodologies]: Computer GraphicsComputational
   Geometry and Object Modeling
ID DELAUNAY MESH REFINEMENT; ALGORITHM; POINTS; GENERATION; SURFACES
AB We introduce the Sifted Disk technique for locally resampling a point cloud in order to reduce the number of points. Two neighboring points are removed and we attempt to find a single random point that is sufficient to replace them both. The resampling respects the original sizing function; In that sense it is not a coarsening. The angle and edge length guarantees of a Delaunay triangulation of the points are preserved. The sifted point cloud is still suitable for texture synthesis because the Fourier spectrum is largely unchanged. We provide an efficient algorithm, and demonstrate that sifting uniform Maximal Poisson-disk Sampling (MPS) and Delaunay Refinement (DR) points reduces the number of points by about 25%, and achieves a density about 1/3 more than the theoretical minimum. We show two-dimensional stippling and meshing applications to demonstrate the significance of the concept.
C1 [Ebeida, Mohamed S.; Mitchell, Scott A.] Sandia Natl Labs, Albuquerque, NM 87185 USA.
   [Mahmoud, Ahmed H.; Awad, Muhammad A.; Mohammed, Mohammed A.] Univ Alexandria, Alexandria, Egypt.
   [Rand, Alexander] CD Adapco, Houston, TX USA.
   [Owens, John D.] Univ Calif Davis, Davis, CA 95616 USA.
RP Ebeida, MS (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA.
RI Owens, John/A-1256-2012
OI Owens, John/0000-0001-6582-8237
FU National Science Foundation [CCF-1017399]; U.S. Department of Energy's
   National Nuclear Security Administration [DE-AC04-94AL85000]; SciDAC
   Institute for Ultrascale Visualization
FX The UC Davis author thanks the SciDAC Institute for Ultrascale
   Visualization and the National Science Foundation (grant # CCF-1017399)
   for supporting this work.; Sandia National Laboratories is a
   multi-program laboratory managed and operated by Sandia Corporation, a
   wholly owned subsidiary of Lockheed Martin Corporation, for the U.S.
   Department of Energy's National Nuclear Security Administration under
   contract DE-AC04-94AL85000.
NR 40
TC 4
Z9 4
U1 0
U2 0
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 0167-7055
EI 1467-8659
J9 COMPUT GRAPH FORUM
JI Comput. Graph. Forum
PD MAY
PY 2013
VL 32
IS 2
BP 509
EP 518
DI 10.1111/cgf.12071
PN 4
PG 10
WC Computer Science, Software Engineering
SC Computer Science
GA 138YC
UT WOS:000318546800013
ER

PT J
AU Corradetti, S
   Biasetto, L
   Manzolaro, M
   Scarpa, D
   Carturan, S
   Andrighetto, A
   Prete, G
   Vasquez, J
   Zanonato, P
   Colombo, P
   Jost, CU
   Stracener, DW
AF Corradetti, S.
   Biasetto, L.
   Manzolaro, M.
   Scarpa, D.
   Carturan, S.
   Andrighetto, A.
   Prete, G.
   Vasquez, J.
   Zanonato, P.
   Colombo, P.
   Jost, C. U.
   Stracener, D. W.
TI Neutron-rich isotope production using a uranium carbide carbon nanotubes
   SPES target prototype
SO EUROPEAN PHYSICAL JOURNAL A
LA English
DT Article
ID ISOL TARGETS; COMPOSITES; RELEASE; PROJECT; RIB
AB The SPES (Selective Production of Exotic Species) project, under development at the Istituto Nazionale di Fisica Nucleare - Laboratori Nazionali di Legnaro (INFN-LNL), is a new-generation Isotope Separation On-Line (ISOL) facility for the production of radioactive ion beams by means of the proton-induced fission of uranium. In the framework of the research on the SPES target, seven uranium carbide discs, obtained by reacting uranium oxide with graphite and carbon nanotubes, were irradiated with protons at the Holifield Radioactive Ion Beam Facility (HRIBF) of Oak Ridge National Laboratory (ORNL). In the following, the yields of several fission products obtained during the experiment are presented and discussed. The experimental results are then compared to those obtained using a standard uranium carbide target. The reported data highlights the capability of the new type of SPES target to produce and release isotopes of interest for the nuclear physics community.
C1 [Corradetti, S.; Biasetto, L.; Manzolaro, M.; Scarpa, D.; Carturan, S.; Andrighetto, A.; Prete, G.; Vasquez, J.] INFN Lab Nazl Legnaro, I-35020 Legnaro, PD, Italy.
   [Corradetti, S.; Zanonato, P.] Univ Padua, Dipartimento Sci Chim, I-35131 Padua, Italy.
   [Biasetto, L.] Univ Padua, Dipartimento Tecn & Gestione Sistemi Ind, I-36100 Vicenza, Italy.
   [Carturan, S.] Univ Padua, Dipartimento Fis & Astron, I-35131 Padua, Italy.
   [Vasquez, J.] Univ Padua, Dipartimento Ingn Informaz, I-35131 Padua, Italy.
   [Colombo, P.] Univ Padua, Dipartimento Ingn Ind, I-35131 Padua, Italy.
   [Jost, C. U.] Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA.
   [Stracener, D. W.] Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA.
RP Corradetti, S (reprint author), INFN Lab Nazl Legnaro, Viale Univ 2, I-35020 Legnaro, PD, Italy.
EM stefano.corradetti@lnl.infn.it
RI Corradetti, Stefano/B-6605-2017; 
OI Corradetti, Stefano/0000-0002-0831-5520; carturan,
   sara/0000-0002-6702-2867
NR 31
TC 4
Z9 4
U1 2
U2 27
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 1434-6001
J9 EUR PHYS J A
JI Eur. Phys. J. A
PD MAY
PY 2013
VL 49
IS 5
AR 56
DI 10.1140/epja/i2013-13056-1
PG 10
WC Physics, Nuclear; Physics, Particles & Fields
SC Physics
GA 143XT
UT WOS:000318903200004
ER

PT J
AU Rodenbeck, CT
   Bryant, D
   Eye, R
   Sandoval, C
   Young, NP
   Beechem, TE
   Knudson, RT
   Allen, D
   Brehm, G
   Peterson, KA
   Mendenhall, T
AF Rodenbeck, Christopher T.
   Bryant, Danny
   Eye, Robert
   Sandoval, Charles
   Young, Nathan P.
   Beechem, Thomas E., III
   Knudson, Richard T.
   Allen, Donald
   Brehm, Gailon
   Peterson, Kenneth A.
   Mendenhall, Travis
TI Design of Robust On-Chip Drain Modulators for Monolithic Pulsed Power
   Amplifiers
SO IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS
LA English
DT Article
DE MMIC/RFIC power amplifiers (PAs); pulse modulation; thermal imaging;
   LTCC modules
AB This letter presents detailed design information for a monolithic high-speed drain modulator fabricated in a high-voltage gallium arsenide (GaAs) process and integrated with a 50-W S-band power amplifier. The pHEMT modulator architecture and design tradeoffs affecting circuit size, speed, and reliability are discussed. Electrical performance is validated in the fast time domain, with detected rise and fall times of 6 and 4 ns, respectively, and achievable RF pulse widths as narrow as 25 ns. A novel all-phase mismatch test is used to evaluate modulator peak current handling over a matrix of operating conditions varying duty cycle from 5 to 45% and temperature from -55 to +85 degrees C; peak currents of up to 9 A are induced at a supply voltage of 28 V, with no observed degradation in electrical performance. Thermal measurements taken using high-resolution Raman scattering thermometry in conjunction with infrared imaging confirm that maximum channel temperatures in the modulator subcircuit are within safe operating limits.
C1 [Rodenbeck, Christopher T.; Sandoval, Charles; Young, Nathan P.; Beechem, Thomas E., III; Knudson, Richard T.; Peterson, Kenneth A.] Sandia Natl Labs, Albuquerque, NM 87123 USA.
   [Bryant, Danny; Eye, Robert; Allen, Donald; Brehm, Gailon] TriQuint Semicond, Dallas, TX 75080 USA.
   [Mendenhall, Travis] Honeywell Fed Mfg & Technol, Kansas City, MO 64131 USA.
RP Rodenbeck, CT (reprint author), Sandia Natl Labs, Albuquerque, NM 87123 USA.
EM chris.rodenbeck@ieee.org
FU Sandia Corporation, a Lockheed Martin Company; United States Department
   of Energy's National Nuclear Security Administration [DE-AC04-94AL85000]
FX This work was supported in part by the Sandia Corporation, a Lockheed
   Martin Company, for the United States Department of Energy's National
   Nuclear Security Administration under Contract DE-AC04-94AL85000.
NR 12
TC 1
Z9 1
U1 0
U2 5
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 1531-1309
J9 IEEE MICROW WIREL CO
JI IEEE Microw. Wirel. Compon. Lett.
PD MAY
PY 2013
VL 23
IS 5
BP 267
EP 269
DI 10.1109/LMWC.2013.2253311
PG 3
WC Engineering, Electrical & Electronic
SC Engineering
GA 145GU
UT WOS:000319004000015
ER

PT J
AU Scheinker, A
   Krstic, M
AF Scheinker, Alexander
   Krstic, Miroslav
TI Minimum-Seeking for CLFs: Universal Semiglobally Stabilizing Feedback
   Under Unknown Control Directions
SO IEEE TRANSACTIONS ON AUTOMATIC CONTROL
LA English
DT Article
DE Control Lyapunov functions (CLF); extremum seeking (ES); lie bracket
   averaging
ID DISCRETE-TIME-SYSTEMS; HIGH-FREQUENCY GAINS; EXTREMUM-SEEKING;
   NONLINEAR-SYSTEMS; ADAPTIVE STABILIZATION; LINEAR-SYSTEMS; CONTROL
   DESIGN; ROBUST-CONTROL; FLOW-CONTROL; INSTABILITY
AB Employing extremum seeking (ES) for seeking minima of control Lyapunov function (CLF) candidates, we develop 1) the first systematic design of ES controllers for unstable plants, 2) a simple non-model based universal feedback law that emulates, in an average sense, the "L-g V controllers" for stabilization with inverse optimality, and 3) a new strategy for stabilization of systems with unknown control directions, as an alternative to Nussbaum gain controllers that lack exponential stability, lack transient performance guarantees, and lack robustness to changes in the control direction. The stability analysis that underlies our designs is inspired by an analysis approach synthesized in a recent work by Durr, Stankovic, and Johansson, which combines a Lie bracket averaging result of Gurvits and Li with a semiglobal practical stability result under small parametric perturbations by Moreau and Aeyels.
C1 [Scheinker, Alexander] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
   [Scheinker, Alexander] Univ Calif San Diego, La Jolla, CA 92093 USA.
   [Krstic, Miroslav] Univ Calif San Diego, Dept Mech & Aerosp Engn, La Jolla, CA 92093 USA.
RP Scheinker, A (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA.
EM ascheink@ucsd.edu; krstic@ucsd.edu
FU Los Alamos National Laboratory; Air Force Office of Scientific Research
FX This work was supported by the Los Alamos National Laboratory, and Air
   Force Office of Scientific Research. Recommended by Associate Editor L.
   Zaccarian.
NR 68
TC 19
Z9 19
U1 3
U2 13
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 0018-9286
EI 1558-2523
J9 IEEE T AUTOMAT CONTR
JI IEEE Trans. Autom. Control
PD MAY
PY 2013
VL 58
IS 5
BP 1107
EP 1122
DI 10.1109/TAC.2012.2225514
PG 16
WC Automation & Control Systems; Engineering, Electrical & Electronic
SC Automation & Control Systems; Engineering
GA 138WQ
UT WOS:000318542200002
ER

PT J
AU Deymier-Back, AC
   Singhal, A
   Yuan, F
   Almer, JD
   Brinson, LC
   Dunand, DC
AF Deymier-Back, Alix C.
   Singhal, Anjali
   Yuan, Fang
   Almer, Jonathan D.
   Brinson, L. Catherine
   Dunand, David C.
TI Effect of high-energy X-ray irradiation on creep mechanisms in bone and
   dentin
SO JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS
LA English
DT Article
DE Bone; Dentin; Creep; Synchrotron; X-ray diffraction; Irradiation damage
ID HUMAN CORTICAL BONE; BOVINE DENTIN; NEUTRON-DIFFRACTION; ELASTIC
   PROPERTIES; GAMMA-IRRADIATION; LOAD-TRANSFER; NANOSCALE DEFORMATION;
   COLLAGEN FIBRILS; TRABECULAR BONE; ALLOGRAFT BONE
AB Under long-term loading creep conditions, mineralized biological tissues like bone are expected to behave in a similar manner to synthetic composites where the creeping matrix sheds load to the elastic reinforcement as creep deformation progresses. To study this mechanism in biological composites, creep experiments were performed at 37 degrees C on bovine compact bone and dentin. Static compressive stresses were applied to the samples, while wide- and small-angle scattering patterns from high energy synchrotron X-rays were used to determine, respectively, the elastic strain in the hydroxyapatite (HAP) platelets and the strain in the mineralized collagen fibril, as a function of creep time. In these highly irradiated biological composites, the reinforcing hydroxyapatite platelets progressively transfer some of their stress back to the softer protein matrix during creep. While such behavior can be explained by damage at the interface between the two phases, it is not consistent with measurements of the apparent moduli - the ratio of applied stress to elastic HAP strain measured throughout the creep experiments by elastic unload/load segments - which remained constant throughout the experiment and thus indicated good HAP/protein bonding. A possible explanation is a combination of X-ray and load induced interfacial damage explaining the shedding of load from the HAP during long term creep, coupled with interfacial re-bonding of the load-disrupted reversible bonds upon unloading, explaining the unaffected elastic load partitioning during unload/load segments. This hypothesis is further supported by finite element modeling which shows results mirroring the experimental strain measurements when considering interfacial delamination and a compliant interstitial space at the ends of the HAP platelets. (C) 2013 Published by Elsevier Ltd.
C1 [Deymier-Back, Alix C.; Singhal, Anjali; Yuan, Fang; Dunand, David C.] Northwestern Univ, Dept Mat Sci & Engn, Evanston, IL 60208 USA.
   [Almer, Jonathan D.] Argonne Natl Lab, Adv Photon Source, Xray Sci Div, Argonne, IL 60439 USA.
   [Brinson, L. Catherine] Northwestern Univ, Dept Mech Engn, Evanston, IL 60208 USA.
   [Brinson, L. Catherine] Northwestern Univ, Dept Mat Sci & Engn, Evanston, IL 60208 USA.
RP Deymier-Back, AC (reprint author), Washington Univ, St Louis Sch Med, Dept Orthoped Surg, 660 S Euclid Ave, St Louis, MO 63110 USA.
EM a.black@wustl.edu; anjalisinghal2007@u.northwestern.edu;
   FangYuan2008@u.northwestern.edu; almer@aps.anl.gov;
   cbrinson@northwestem.edu; dunand@northwestern.edu
RI Brinson, L. Catherine/B-6678-2009; Dunand, David/B-7515-2009; Brinson, L
   Catherine/B-1315-2013; 
OI Brinson, L Catherine/0000-0003-2551-1563; Dunand,
   David/0000-0001-5476-7379
FU U.S. Department of Energy, Office of Science, Office of Basic Energy
   Sciences [DE-AC02-06CH11357]; NDSEG Fellowship from the DOD; NSF
   Graduate Fellowship
FX The authors thank Dr. S.R. Stock (NU) and Dr. Dean R. Haeffner (APS) for
   numerous useful discussions throughout this work. They also acknowledge
   Dr. Yu-chen Karen Chen for her help with the experiments at the APS.
   This research was performed at station 1-ID of APS. Use of the Advanced
   Photon Source was supported by the U.S. Department of Energy, Office of
   Science, Office of Basic Energy Sciences, under Contract No.
   DE-AC02-06CH11357. Partial funding was provided to ACDB by a NDSEG
   Fellowship from the DOD the NSF Graduate Fellowship.
NR 75
TC 4
Z9 4
U1 1
U2 27
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 1751-6161
J9 J MECH BEHAV BIOMED
JI J. Mech. Behav. Biomed. Mater.
PD MAY
PY 2013
VL 21
BP 17
EP 31
DI 10.1016/j.jmbbm.2013.01.016
PG 15
WC Engineering, Biomedical; Materials Science, Biomaterials
SC Engineering; Materials Science
GA 143AA
UT WOS:000318837500003
PM 23454365
ER

PT J
AU De Gregorio, BT
   Stroud, RM
   Nittler, LR
   Alexander, CMO
   Bassim, ND
   Cody, GD
   Kilcoyne, ALD
   Sandford, SA
   Milam, SN
   Nuevo, M
   Zega, TJ
AF De Gregorio, Bradley T.
   Stroud, Rhonda M.
   Nittler, Larry R.
   Alexander, Conel M. O'D
   Bassim, Nabil D.
   Cody, George D.
   Kilcoyne, A. L. David
   Sandford, Scott A.
   Milam, Stefanie N.
   Nuevo, Michel
   Zega, Thomas J.
TI Isotopic and chemical variation of organic nanoglobules in primitive
   meteorites
SO METEORITICS & PLANETARY SCIENCE
LA English
DT Article
ID INTERPLANETARY DUST PARTICLES; TAGISH LAKE METEORITE; CARBONACEOUS
   CHONDRITES; MURCHISON METEORITE; SOLAR-SYSTEM; INTERSTELLAR CHEMISTRY;
   AROMATIC-HYDROCARBONS; PRESOLAR GRAPHITE; NITROGEN ISOTOPE; N-14/N-15
   RATIO
AB Organic nanoglobules are microscopic spherical carbon-rich objects present in chondritic meteorites and other astromaterials. We performed a survey of the morphology, organic functional chemistry, and isotopic composition of 184 nanoglobules in insoluble organic matter (IOM) residues from seven primitive carbonaceous chondrites. Hollow and solid nanoglobules occur in each IOM residue, as well as globules with unusual shapes and structures. Most nanoglobules have an organic functional chemistry similar to, but slightly more carboxyl-rich than, the surrounding IOM, while a subset of nanoglobules have a distinct, highly aromatic functionality. The range of nanoglobule N isotopic compositions was similar to that of nonglobular 15N-rich hotspots in each IOM residue, but nanoglobules account for only about one third of the total 15N-rich hotspots in each sample. Furthermore, many nanoglobules in each residue contained no 15N enrichment above that of bulk IOM. No morphological indicators were found to robustly distinguish the highly aromatic nanoglobules from those that have a more IOM-like functional chemistry, or to distinguish 15N-rich nanoglobules from those that are isotopically normal. The relative abundance of aromatic nanoglobules was lower, and nanoglobule diameters were greater, in more altered meteorites, suggesting the creation/modification of IOM-like nanoglobules during parent-body processing. However, 15N-rich nanoglobules, including many with highly aromatic functional chemistry, likely reflect preaccretionary isotopic fractionation in cold molecular cloud or protostellar environments. These data indicate that no single formation mechanism can explain all of the observed characteristics of nanoglobules, and their properties are likely a result of multiple processes occurring in a variety of environments.
C1 [De Gregorio, Bradley T.] Nova Res Inc, Alexandria, VA 22308 USA.
   [De Gregorio, Bradley T.; Stroud, Rhonda M.; Bassim, Nabil D.] USN, Res Lab, Mat Sci & Technol Div, Washington, DC 20375 USA.
   [Nittler, Larry R.; Alexander, Conel M. O'D] Carnegie Inst Sci, Dept Terr Magnetism, Washington, DC 20015 USA.
   [Cody, George D.] Carnegie Inst Sci, Geophys Lab, Washington, DC 20015 USA.
   [Kilcoyne, A. L. David] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Adv Light Source, Berkeley, CA 94720 USA.
   [Sandford, Scott A.; Nuevo, Michel] NASA, Ames Res Ctr, Moffett Field, CA 94035 USA.
   [Milam, Stefanie N.] NASA, Astrochem Lab, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA.
   [Nuevo, Michel] SETI Inst, Mountain View, CA 94043 USA.
   [Zega, Thomas J.] Univ Arizona, Dept Planetary Sci, Lunar & Planetary Lab, Tucson, AZ 85721 USA.
RP De Gregorio, BT (reprint author), Nova Res Inc, Alexandria, VA 22308 USA.
EM bradley.degregorio.ctr@nrl.navy.mil
RI Milam, Stefanie/D-1092-2012; Alexander, Conel/N-7533-2013; De Gregorio,
   Bradley/B-8465-2008; Kilcoyne, David/I-1465-2013; Stroud,
   Rhonda/C-5503-2008
OI Milam, Stefanie/0000-0001-7694-4129; Alexander,
   Conel/0000-0002-8558-1427; De Gregorio, Bradley/0000-0001-9096-3545;
   Stroud, Rhonda/0000-0001-5242-8015
FU Office of Naval Research, NASA; NASA Astrobiology Institute; U.S.
   Department of Energy; Natural Sciences and Engineering Research Council
   of Canada; National Research Council Canada; Canadian Institutes of
   Health Research; Province of Saskatchewan, Western Economic
   Diversification Canada; University of Saskatchewan
FX We sincerely thank Drs. L. Remusat, G. Matrajt, N. Johnson, and
   associate editor C. Floss for their constructive reviews. This work was
   supported by the Office of Naval Research, NASA Cosmochemistry and
   Origins of Solar Systems Programs, and the NASA Astrobiology Institute.
   This research was conducted while the primary author held a National
   Research Council Research Associateship at the U.S. Naval Research
   Laboratory. Use of the Advanced Light Source was supported by the U.S.
   Department of Energy. Use of the Canadian Light Source was supported by
   the Natural Sciences and Engineering Research Council of Canada, the
   National Research Council Canada, the Canadian Institutes of Health
   Research, the Province of Saskatchewan, Western Economic Diversification
   Canada, and the University of Saskatchewan.
NR 98
TC 15
Z9 15
U1 1
U2 28
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 1086-9379
EI 1945-5100
J9 METEORIT PLANET SCI
JI Meteorit. Planet. Sci.
PD MAY
PY 2013
VL 48
IS 5
BP 904
EP 928
DI 10.1111/maps.12109
PG 25
WC Geochemistry & Geophysics
SC Geochemistry & Geophysics
GA 143OP
UT WOS:000318877300013
ER

PT J
AU Williams, JS
   Haberl, B
   Deshmukh, S
   Johnson, BC
   Malone, BD
   Cohen, ML
   Bradby, JE
AF Williams, James S.
   Haberl, Bianca
   Deshmukh, Sarita
   Johnson, Brett C.
   Malone, Brad D.
   Cohen, Marvin L.
   Bradby, Jodie E.
TI Hexagonal germanium formed via a pressure-induced phase transformation
   of amorphous germanium under controlled nanoindentation
SO PHYSICA STATUS SOLIDI-RAPID RESEARCH LETTERS
LA English
DT Article
DE high pressure; phase transformations; hexagonal germanium;
   nanoindentation
ID RAMAN MICROSPECTROSCOPY; SILICON; GE; INDENTATION; TRANSITIONS; SI;
   SEMICONDUCTORS; AMORPHIZATION; DEFORMATION; HARDNESS
AB We have studied the stable end phase formed in amorphous germanium (a-Ge) films that have been subjected to a pressure-induced phase transformation under indentation loading using a large (20 mu m) spherical indenter. After indentation the samples have been annealed at room temperature to remove any residual unstable R8 and BC8 phases. Raman spectroscopy indicates a single broad peak centred around 292 cm1 and we have used first principles density functional perturbation theory calculations and simulated Raman spectra for nano-crystalline diamond cubic germanium (DC-Ge) to help identification of the final phase as hexagonal diamond germanium (HEX-Ge). Transmission electron microscopy and selected area diffraction analysis confirmed the presence of a dominant HEX-Ge end phase. These results help explain significant inconsistencies in the literature relating to indentation-induced phase transitions in DC- and a-Ge. ((c) 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)
C1 [Williams, James S.; Haberl, Bianca; Deshmukh, Sarita; Bradby, Jodie E.] Australian Natl Univ, Dept Elect Mat Engn, Res Sch Phys & Engn, Canberra, ACT 0200, Australia.
   [Johnson, Brett C.] Univ Melbourne, Sch Phys, Melbourne, Vic 3010, Australia.
   [Malone, Brad D.] Harvard Univ, Sch Engn & Appl Sci, Cambridge, MA 02138 USA.
   [Cohen, Marvin L.] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
   [Cohen, Marvin L.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94720 USA.
RP Williams, JS (reprint author), Australian Natl Univ, Dept Elect Mat Engn, Res Sch Phys & Engn, GPO Box 4, Canberra, ACT 0200, Australia.
EM jim.williams@anu.edu.au; bianca.haberl@anu.edu.au
RI Haberl, Bianca/F-9058-2011; Bradby, Jodie/A-8963-2009; Johnson,
   Brett/B-6442-2016
OI Haberl, Bianca/0000-0002-7391-6031; Bradby, Jodie/0000-0002-9560-8400;
   Johnson, Brett/0000-0002-2174-4178
FU Australian Research Council (ARC)
FX The Australian Research Council (ARC) is acknowledged for financial
   support of this work and JEB gratefully acknowledges an ARC QE II
   Fellowship.
NR 34
TC 6
Z9 7
U1 2
U2 41
PU WILEY-V C H VERLAG GMBH
PI WEINHEIM
PA BOSCHSTRASSE 12, D-69469 WEINHEIM, GERMANY
SN 1862-6254
J9 PHYS STATUS SOLIDI-R
JI Phys. Status Solidi-Rapid Res. Lett.
PD MAY
PY 2013
VL 7
IS 5
BP 355
EP 359
DI 10.1002/pssr.201307079
PG 5
WC Materials Science, Multidisciplinary; Physics, Applied; Physics,
   Condensed Matter
SC Materials Science; Physics
GA 145AI
UT WOS:000318984500016
ER

PT J
AU Bezrukov, F
   Karananas, GK
   Rubio, J
   Shaposhnikov, M
AF Bezrukov, Fedor
   Karananas, Georgios K.
   Rubio, Javier
   Shaposhnikov, Mikhail
TI Higgs-dilaton cosmology: An effective field theory approach
SO PHYSICAL REVIEW D
LA English
DT Article
ID ULTRA HEAVY FERMIONS; STANDARD MODEL; WEAK-INTERACTIONS; BOSON MASS;
   INFLATIONARY UNIVERSE; CHAOTIC INFLATION; HIGH-ENERGIES; PARTICLE;
   GRAVITY; GENERATION
AB The Higgs-dilaton cosmological model is able to describe simultaneously an inflationary expansion in the early Universe and a dark energy dominated stage responsible for the present day acceleration. It also leads to a nontrivial relation between the spectral tilt of scalar perturbations n(s) and the dark energy equation of state omega. We study the self-consistency of this model from an effective field theory point of view. Taking into account the influence of the dynamical background fields, we determine the effective cutoff of the theory, which turns out to be parametrically larger than all the relevant energy scales from inflation to the present epoch. We finally formulate the set of assumptions needed to estimate the amplitude of the quantum corrections in a systematic way and show that the connection between n(s) and omega remains unaltered if these assumptions are satisfied.
C1 [Bezrukov, Fedor] Univ Connecticut, Dept Phys, Storrs, CT 06269 USA.
   [Bezrukov, Fedor] Brookhaven Natl Lab, BNL Res Ctr, RIKEN, Upton, NY 11973 USA.
   [Karananas, Georgios K.] Natl Tech Univ Athens, Dept Phys, Athens 15780, Greece.
   [Karananas, Georgios K.; Rubio, Javier; Shaposhnikov, Mikhail] Ecole Polytech Fed Lausanne, Inst Theorie Phenomenes Phys, CH-1015 Lausanne, Switzerland.
RP Bezrukov, F (reprint author), Univ Connecticut, Dept Phys, Storrs, CT 06269 USA.
EM fedor.bezrukov@uconn.edu; georgios.karananas@epfl.ch;
   javier.rubio@epfl.ch; mikhail.shaposhnikov@epfl.ch
OI Bezrukov, Fedor/0000-0003-3601-1003
FU Swiss National Science Foundation; Tomalla Foundation; Greek State
   Scholarship Foundation through the LLP-ERASMUS program
FX G. K. K. would like to thank Kostas Farakos for numerous discussions. J.
   R. thanks Juan Garcia-Bellido for valuable comments. This work was
   supported in part by the Swiss National Science Foundation, the Tomalla
   Foundation and the Greek State Scholarship Foundation through the
   LLP-ERASMUS program.
NR 66
TC 26
Z9 26
U1 0
U2 2
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1550-7998
J9 PHYS REV D
JI Phys. Rev. D
PD MAY 1
PY 2013
VL 87
IS 9
AR 096001
DI 10.1103/PhysRevD.87.096001
PG 17
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 145EV
UT WOS:000318998400002
ER

PT J
AU de Anna, P
   Le Borgne, T
   Dentz, M
   Tartakovsky, AM
   Bolster, D
   Davy, P
AF de Anna, Pietro
   Le Borgne, Tanguy
   Dentz, Marco
   Tartakovsky, Alexandre M.
   Bolster, Diogo
   Davy, Philippe
TI Flow Intermittency, Dispersion, and Correlated Continuous Time Random
   Walks in Porous Media
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID ANOMALOUS DIFFUSION; TURBULENCE; PARTICLES
AB We study the intermittency of fluid velocities in porous media and its relation to anomalous dispersion. Lagrangian velocities measured at equidistant points along streamlines are shown to form a spatial Markov process. As a consequence of this remarkable property, the dispersion of fluid particles can be described by a continuous time random walk with correlated temporal increments. This new dynamical picture of intermittency provides a direct link between the microscale flow, its intermittent properties, and non-Fickian dispersion.
C1 [de Anna, Pietro; Le Borgne, Tanguy; Davy, Philippe] Univ Rennes 1, CNRS, Geosci Rennes, UMR 6118, F-35042 Rennes, France.
   [Dentz, Marco] Spanish Natl Res Council IDAEA CSIC, Barcelona 08034, Spain.
   [Tartakovsky, Alexandre M.] Pacific NW Natl Lab, Richland, WA 99354 USA.
   [Bolster, Diogo] Univ Notre Dame, South Bend, IN 46556 USA.
   [de Anna, Pietro] MIT, Cambridge, MA 02139 USA.
RP de Anna, P (reprint author), Univ Rennes 1, CNRS, Geosci Rennes, UMR 6118, F-35042 Rennes, France.
EM pietrodeanna@gmail.com
RI Le Borgne, Tanguy/A-2807-2013; Bolster, Diogo/D-9667-2011; Dentz,
   Marco/C-1076-2015
OI Bolster, Diogo/0000-0003-3960-4090; Dentz, Marco/0000-0002-3940-282X
FU European Commission through FP7 ITN project IMVUL [212298]; Marie Curie
   ERG grant ReactiveFlows [230947]; ASCR Office of the U.S. Department of
   Energy; NSF [EAR-1113704]; FP7 EU project PANACEA [282900]
FX P. de Anna and T. Le Borgne acknowledge the financial support of the
   European Commission through FP7 ITN project IMVUL (Grant No. 212298),
   and Marie Curie ERG grant ReactiveFlows (Grant No. 230947). A.
   Tartakovsky was supported by the ASCR Office of the U.S. Department of
   Energy. D. Bolster was supported by NSF Grant No. EAR-1113704. M. Dentz
   acknowledges the support of the FP7 EU project PANACEA (Grant No.
   282900).
NR 35
TC 58
Z9 58
U1 1
U2 49
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
EI 1079-7114
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD MAY 1
PY 2013
VL 110
IS 18
AR 184502
DI 10.1103/PhysRevLett.110.184502
PG 5
WC Physics, Multidisciplinary
SC Physics
GA 145MD
UT WOS:000319019300006
PM 23683202
ER

PT J
AU Gao, L
   Nilson, PM
   Igumenschev, IV
   Fiksel, G
   Yan, R
   Davies, JR
   Martinez, D
   Smalyuk, V
   Haines, MG
   Blackman, EG
   Froula, DH
   Betti, R
   Meyerhofer, DD
AF Gao, L.
   Nilson, P. M.
   Igumenschev, I. V.
   Fiksel, G.
   Yan, R.
   Davies, J. R.
   Martinez, D.
   Smalyuk, V.
   Haines, M. G.
   Blackman, E. G.
   Froula, D. H.
   Betti, R.
   Meyerhofer, D. D.
TI Observation of Self-Similarity in the Magnetic Fields Generated by the
   Ablative Nonlinear Rayleigh-Taylor Instability
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID INERTIAL CONFINEMENT FUSION; SCALING LAWS; OMEGA LASER; GROWTH-RATE;
   EVOLUTION; RATES
AB Magnetic fields generated by the nonlinear Rayleigh-Taylor growth of laser-seeded three-dimensional broadband perturbations were measured in laser-accelerated planar targets using ultrafast proton radiography. The experimental data show self-similar behavior in the growing cellular magnetic field structures. These observations are consistent with a bubble competition and merger model that predicts the time evolution of the number and size of the bubbles, linking the cellular magnetic field structures with the Rayleigh-Taylor bubble and spike growth.
C1 [Gao, L.; Nilson, P. M.; Igumenschev, I. V.; Fiksel, G.; Yan, R.; Davies, J. R.; Blackman, E. G.; Froula, D. H.; Betti, R.; Meyerhofer, D. D.] Univ Rochester, Laser Energet Lab, Rochester, NY 14623 USA.
   [Gao, L.; Yan, R.; Davies, J. R.; Betti, R.; Meyerhofer, D. D.] Univ Rochester, Dept Mech Engn, Rochester, NY 14623 USA.
   [Nilson, P. M.; Yan, R.; Davies, J. R.; Betti, R.; Meyerhofer, D. D.] Univ Rochester, Fus Sci Ctr Extreme States Matter, Rochester, NY 14623 USA.
   [Martinez, D.; Smalyuk, V.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
   [Haines, M. G.] Univ London Imperial Coll Sci Technol & Med, Dept Phys, London SW7 2AZ, England.
   [Blackman, E. G.; Betti, R.; Meyerhofer, D. D.] Univ Rochester, Dept Phys & Astron, Rochester, NY 14623 USA.
RP Gao, L (reprint author), Univ Rochester, Laser Energet Lab, Rochester, NY 14623 USA.
RI Gao, Lan/K-7187-2016
OI Gao, Lan/0000-0002-4119-2825
FU U.S. Department of Energy Office of Inertial Confinement Fusion
   [DE-FC52-08NA28302]; University of Rochester; New York State Energy
   Research and Development Authority; DOE
FX This work was supported by the U.S. Department of Energy Office of
   Inertial Confinement Fusion under Cooperative Agreement No.
   DE-FC52-08NA28302, the University of Rochester, and the New York State
   Energy Research and Development Authority. The support of DOE does not
   constitute an endorsement by DOE of the views expressed in this article.
NR 34
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U2 32
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
EI 1079-7114
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD MAY 1
PY 2013
VL 110
IS 18
AR 185003
DI 10.1103/PhysRevLett.110.185003
PG 5
WC Physics, Multidisciplinary
SC Physics
GA 145MD
UT WOS:000319019300007
PM 23683208
ER

PT J
AU Watanabe, H
   Murayama, H
AF Watanabe, Haruki
   Murayama, Hitoshi
TI Redundancies in Nambu-Goldstone Bosons
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID VORTEX LATTICES; NONLINEAR REALIZATIONS; HYDRODYNAMICS; OSCILLATIONS;
   SUPERFLUIDS; VORTICES; GAS
AB We propose a simple criterion to identify when Nambu-Goldstone bosons for different symmetries are redundant. It solves an old mystery why crystals have phonons for spontaneously broken translations but no gapless excitations for equally spontaneously broken rotations. Similarly for a superfluid, the Nambu-Goldstone boson for spontaneously broken Galilean symmetry is redundant with phonons. The most nontrivial example is Tkachenko mode for a vortex lattice in a superfluid, where phonons are redundant to the Tkachenko mode which is identified as the Boboliubov mode.
C1 [Watanabe, Haruki; Murayama, Hitoshi] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
   [Murayama, Hitoshi] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Theoret Phys Grp, Berkeley, CA 94720 USA.
   [Murayama, Hitoshi] Univ Tokyo, Todai Inst Adv Study, Kavli Inst Phys & Math Universe WPI, Kashiwa, Chiba 2778583, Japan.
RP Watanabe, H (reprint author), Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
EM hwatanabe@berkeley.edu; hitoshi@berkeley.edu
FU Honjo International Scholarship Foundation; U.S. DOE
   [DE-AC03-76SF00098]; NSF [PHY-1002399]; JSPS [23540289]; FIRST program
   Subaru Measurements of Images and Redshifts (SuMIRe), CSTP; WPI, MEXT,
   Japan
FX We appreciate fruitful discussion with T. Brauner and R. Shankar. We
   thank A. Beekman, R. Ikeda, and L. Radzihovsky for informing us of Refs.
   [9,19,24], respectively. H. W. is grateful to M. Nitta, M. Kobayashi,
   and S. Furukawa for useful discussion on vortex lattices. H. W.
   appreciates the support from the Honjo International Scholarship
   Foundation. The work of H. M. was supported in part by the U.S. DOE
   under Contract DE-AC03-76SF00098, by the NSF under Grant No.
   PHY-1002399, the JSPS Grant (C) 23540289, and by the FIRST program
   Subaru Measurements of Images and Redshifts (SuMIRe), CSTP, and by WPI,
   MEXT, Japan.
NR 31
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U1 1
U2 5
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD MAY 1
PY 2013
VL 110
IS 18
AR 181601
DI 10.1103/PhysRevLett.110.181601
PG 5
WC Physics, Multidisciplinary
SC Physics
GA 145MD
UT WOS:000319019300003
PM 23683188
ER

PT J
AU Chatterji, T
   Jalarvo, N
   Szytula, A
AF Chatterji, Tapan
   Jalarvo, Niina
   Szytula, Andrzej
TI Low energy nuclear spin excitations in HoAl2 investigated by high
   resolution neutron spectroscopy
SO SOLID STATE COMMUNICATIONS
LA English
DT Article
DE Hyperfine interaction; Nuclear spin excitations; Ferromagnetic phase
   transition; Neutron scattering
ID GROUND-STATE; TBAL2
AB We have investigated low energy excitations in metallic HoAl2 by high resolution neutron spectroscopy. At T=3 K we found clear inelastic peaks in the energy loss and energy gain sides along with the central elastic peak. We interpret these inelastic peaks to be due to the transitions from hyperfine-split nuclear levels. The energy which is E=25.03 +/- 0.02 mu eV at T=3 K, decreases continuously and becomes zero at T-N approximate to 30 K. The intensity of the inelastic peak remains more or less constant as a function temperature before the it merges with the central elastic peak at T-N. The energy of nuclear spin excitations in HoAl2 seems to follow the order parameter of the ferromagnetic phase transition. (C) 2013 Elsevier Ltd. All rights reserved.
C1 [Chatterji, Tapan] Inst Max Von Laue Paul Langevin, F-38042 Grenoble 9, France.
   [Jalarvo, Niina] Oak Ridge Natl Lab, Chem & Engn Mat Div, Julich Ctr Neutron Sci JCNS 1, Forschungszentrum Julich,Outstn Spallat Neutron S, Oak Ridge, TN 37831 USA.
   [Szytula, Andrzej] Jagellonian Univ, Inst Phys, PL-30059 Krakow, Poland.
RP Chatterji, T (reprint author), Inst Max Von Laue Paul Langevin, 6 Rue Joules Horowitz,BP 156, F-38042 Grenoble 9, France.
EM chatterji@ill.fr
RI Jalarvo, Niina/Q-1320-2015
OI Jalarvo, Niina/0000-0003-0644-6866
NR 33
TC 2
Z9 2
U1 0
U2 9
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0038-1098
J9 SOLID STATE COMMUN
JI Solid State Commun.
PD MAY
PY 2013
VL 161
BP 42
EP 45
DI 10.1016/j.ssc.2013.02.024
PG 4
WC Physics, Condensed Matter
SC Physics
GA 143AU
UT WOS:000318839500010
ER

PT J
AU Dempsey, PJ
   Sheng, SW
AF Dempsey, Paula J.
   Sheng, Shuangwen
TI Investigation of data fusion applied to health monitoring of wind
   turbine drivetrain components
SO WIND ENERGY
LA English
DT Article
DE data fusion; health monitoring; oil-debris analysis; vibration analysis;
   wind turbine drivetrain
AB The research described was performed with diagnostic tools used to detect damage to dynamic mechanical components in a wind turbine gearbox. Different monitoring technologies were evaluated by collecting vibration and oil-debris data from tests performed on both a healthy' gearbox and a damaged gearbox that were mounted on a dynamometer test stand at the National Renewable Energy Laboratory (NREL). The damaged gearbox tested had been removed from the field after it experienced component damage because of two events that resulted in the loss of oil. The gearbox was re-tested under controlled conditions by using the NREL dynamometer test stand. Preliminary results indicate that oil-debris and vibration data can be integrated to improve the assessment of the health of the wind turbine gearbox. Copyright (c) 2012 John Wiley & Sons, Ltd.
C1 [Dempsey, Paula J.] NASA Glenn Res Ctr, Cleveland, OH 44135 USA.
   [Sheng, Shuangwen] Natl Renewable Energy Lab, Golden, CO 80401 USA.
RP Sheng, SW (reprint author), Natl Renewable Energy Lab, Golden, CO 80401 USA.
EM Shuangwen.Sheng@nrel.gov
OI sheng, shuangwen/0000-0003-0134-0907
FU US Department of Energy; NREL
FX The authors thank the US Department of Energy for its support of this
   work. We also acknowledge and appreciate the support given by the NREL
   condition-monitoring partners.
NR 17
TC 5
Z9 6
U1 1
U2 18
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 1095-4244
J9 WIND ENERGY
JI Wind Energy
PD MAY
PY 2013
VL 16
IS 4
BP 479
EP 489
DI 10.1002/we.1512
PG 11
WC Energy & Fuels; Engineering, Mechanical
SC Energy & Fuels; Engineering
GA 145LR
UT WOS:000319018100001
ER

PT J
AU Short, W
   Diakov, V
AF Short, Walter
   Diakov, Victor
TI Matching Western US electricity consumption with wind and solar
   resources
SO WIND ENERGY
LA English
DT Article
DE wind power variability; energy storage; curtailment
ID LARGE-SCALE INTEGRATION; ENERGY; POWER
AB The variability of wind and solar is perceived as a major obstacle in employing otherwise abundant renewable energy resources. On the basis of the available geographically dispersed data for the Western USA, we analyze to what extent the geographic diversity of these resources can offset their variability. We determine the best match to loads in the western portion of the USA that can be achieved with wind power and photovoltaics (PV) with no transmission limitations.Without storage and with no curtailment, wind and PV can meet up to 50% of loads in Western USA. It is beneficial to build more wind than PV mostly because the wind contributes at night. When storage is available, the optimal mix has almost 75% as much nominal PV capacity as wind, with the PV energy contribution being 32% of the electricity produced from wind. With only 10GW of storage (twice the pumped hydro storage capacity that already exists in the Western Electric Coordinating Council), up to 82% of the load can be matched with wind and PV, while in the same time curtailing just 10% of the renewable energy throughout the year. Copyright (c) 2012 John Wiley & Sons, Ltd.
C1 [Short, Walter; Diakov, Victor] Natl Renewable Energy Lab, Golden, CO 80401 USA.
RP Diakov, V (reprint author), Natl Renewable Energy Lab, 1617 Cole Blvd,RSF 300, Golden, CO 80401 USA.
EM victor.diakov@nrel.gov
NR 16
TC 3
Z9 3
U1 1
U2 13
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 1095-4244
J9 WIND ENERGY
JI Wind Energy
PD MAY
PY 2013
VL 16
IS 4
BP 491
EP 500
DI 10.1002/we.1513
PG 10
WC Energy & Fuels; Engineering, Mechanical
SC Energy & Fuels; Engineering
GA 145LR
UT WOS:000319018100002
ER

PT J
AU Kraft, SJ
   Sanchez, RH
   Hock, AS
AF Kraft, Steven J.
   Sanchez, Raul Hernandez
   Hock, Adam S.
TI A Remarkably Active Iron Catecholate Catalyst Immobilized in a Porous
   Organic Polymer
SO ACS CATALYSIS
LA English
DT Article
DE catalysis; hydrosilylation; iron; catalysis; porous organic polymer;
   catechol
ID TRANSITION-METAL-COMPLEXES; CARBONYL-COMPOUNDS; ENANTIOSELECTIVE
   CATALYSIS; HETEROGENEOUS CATALYSIS; COORDINATION SITE; NICKEL-CATALYSTS;
   HYDROGEN STORAGE; LINKED POLYMERS; SURFACE-AREA; HYDROSILYLATION
AB A single-site, Iron catecholate-containing porous organic polymer was prepared and utilized as a stable and remarkably active catalyst for the hydrosilylation of ketones and aldehydes. In some instances, catalyst loadings of 0.043-2.1 mol % [Fe] Were sufficient for complete hydrosilylation of aldehydes and ketones within IS mm at room temperature. The catalyst can be recycled at least three times without a drop in,catalytic activity. This system is an example of an immobilized homogeneous catalyst with no hemogeneous. analogue.
C1 [Kraft, Steven J.; Hock, Adam S.] Argonne Natl Lab, Chem Sci & Engn Div, Argonne, IL 60439 USA.
   [Sanchez, Raul Hernandez] Harvard Univ, Dept Chem & Chem Biol, Cambridge, MA 02139 USA.
   [Hock, Adam S.] IIT, Dept Biol & Chem Sci, Chicago, IL 60616 USA.
RP Hock, AS (reprint author), Argonne Natl Lab, Chem Sci & Engn Div, 9700 S Cass Ave, Argonne, IL 60439 USA.
EM ahock@iit.edu
RI Hernandez Sanchez, Raul/A-1925-2013; Hock, Adam/D-7660-2012
OI Hernandez Sanchez, Raul/0000-0001-6013-2708; Hock,
   Adam/0000-0003-1440-1473
FU U.S. Department of Energy [DE-AC02-06CH11357]; CONACYT (Consejo Nacional
   de Ciencia y Tecnologia); Fundacion Mexico
FX We gratefully acknowledge funding by the U.S. Department of Energy,
   under Contract No. DE-AC02-06CH11357. R.H.S. acknowledges CONACYT
   (Consejo Nacional de Ciencia y Tecnologia) and Fundacion Mexico for
   doctoral fellowship. We would like to thank Ted Betley, SonBinh Nguyen,
   and Marc Johnson for helpful discussions.
NR 67
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U1 7
U2 64
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 2155-5435
J9 ACS CATAL
JI ACS Catal.
PD MAY
PY 2013
VL 3
IS 5
BP 826
EP 830
DI 10.1021/cs400043a
PG 5
WC Chemistry, Physical
SC Chemistry
GA 139NJ
UT WOS:000318589100004
ER

PT J
AU Gaudet, JR
   de la Riva, A
   Peterson, EJ
   Bolin, T
   Datye, AK
AF Gaudet, Jason R.
   de la Riva, Andrew
   Peterson, Eric J.
   Bolin, Trudy
   Datye, Abhaya K.
TI Improved Low-Temperature CO Oxidation Performance of Pd Supported on
   La-Stabilized Alumina
SO ACS CATALYSIS
LA English
DT Article
DE STEM; CO oxidation; DRIFTS; EXAFS; in situ; lanthana-stabilized alumina;
   palladium; Pd/alumina; XANES
ID METAL-PARTICLE-SIZE; SILICA USY ZEOLITE; RANGE 1-150 TORR;
   CARBON-MONOXIDE; CATALYTIC-OXIDATION; METHANE COMBUSTION; HYDROGEN
   CHEMISORPTION; AUTOMOTIVE CATALYSTS; PD/AL2O3 CATALYSTS; SINGLE-CRYSTALS
AB Simulated diesel oxidation catalysts (DOCs) consisting of 2.5% Pd were prepared on gamma-Al2O3 and lanthanastabilized gamma-Al2O3; it was found that the La-containing catalyst had higher CO conversion and lower onset temperature for CO oxidation (similar to 100 degrees C). Aberration-corrected STEM showed that the La-alumina support helped to stabilize Pd in smaller particles and clusters, increasing dispersion from 17 to 26%. The higher dispersion was responsible, in part, for the improved CO oxidation rate; at 140 degrees C, the turnover frequency (TOF) was improved from 0.0019 to 0.0095 s(-1) with the addition of La. This TOF increase appears to be tied to facile redox behavior of the Pd/La-alumina catalyst, which was evident in the results of in situ X-ray absorption spectroscopy (XAS) and FTIR spectroscopy. In these experiments, both catalysts were calcined at 500 degrees C to form PdO and then reduced to Pd metal at 140 degrees C in the presence of CO. When the CO-covered catalyst was exposed to CO oxidation reaction conditions at 140 degrees C, the 2.5% Pd/Al2O3 catalyst remained nearly fully reduced, and the surface converage of CO did not change, indicating irreversible CO adsorption and very low reactivity toward oxygen. On the other hand, the more active 2.5% Pd/La-Al2O3 catalyst was more reactive toward oxygen, with a portion of the Pd becoming oxidized when the gas phase was switched from pure CO to the reaction mixture. There was a drop in surface coverage of CO when switching from pure CO to the reaction mixture on the Pd/La-alumina. The results suggest that the role of the La-alumina support is 2-fold, increasing the dispersion of Pd by forming small, stable Pd particles and allowing a portion of the Pd to exhibit facile redox behavior at low temperatures, making the Pd less susceptible to poisoning by CO. This work provides insights into factors that could lead to improved low-temperature CO oxidation reactivity in Pd-based automotive exhaust catalysts.
C1 [Gaudet, Jason R.; de la Riva, Andrew; Peterson, Eric J.; Datye, Abhaya K.] Univ New Mexico, Dept Chem & Nucl Engn, Albuquerque, NM 87131 USA.
   [Gaudet, Jason R.; de la Riva, Andrew; Peterson, Eric J.; Datye, Abhaya K.] Univ New Mexico, Ctr Microengn Mat, Albuquerque, NM 87131 USA.
   [Bolin, Trudy] Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA.
RP Datye, AK (reprint author), Univ New Mexico, Dept Chem & Nucl Engn, MSC 01 1120, Albuquerque, NM 87131 USA.
EM jrgaudet@umich.edu; datye@unm.edu
OI Datye, Abhaya/0000-0002-7126-8659
FU Office of Basic Energy Sciences of the U.S. Dept. of Energy (DOE);
   National Science Foundation Division of Materials Research; Office of
   Basic Energy Sciences of the U.S. DOE [W-31-109-Eng-38]; U.S. DOE,
   Office of Science [DE-FG02-05ER15712]
FX Portions of this work were conducted at beamline 9-BM (CMC) of the
   Advanced Photon Source, Argonne National Laboratory. Work at the CMC
   Beamlines is supported in part by the Office of Basic Energy Sciences of
   the U.S. Dept. of Energy (DOE) and by the National Science Foundation
   Division of Materials Research. Use of the Advanced Photon Source is
   supported by the Office of Basic Energy Sciences of the U.S. DOE under
   Contract No. W-31-109-Eng-38. We gratefully acknowledge funding for this
   work provided by the U.S. DOE, Office of Science Grant
   DE-FG02-05ER15712. STEM imaging was performed at the Environmental
   Molecular Sciences Laboratory (EMSL), a user facility operated by the
   DOE at Pacific Northwest National Laboratories.
NR 46
TC 27
Z9 27
U1 17
U2 164
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 2155-5435
J9 ACS CATAL
JI ACS Catal.
PD MAY
PY 2013
VL 3
IS 5
BP 846
EP 855
DI 10.1021/cs400024u
PG 10
WC Chemistry, Physical
SC Chemistry
GA 139NJ
UT WOS:000318589100007
ER

PT J
AU Wang, WH
   Muckerman, JT
   Fujita, E
   Himeda, Y
AF Wang, Wan-Hui
   Muckerman, James T.
   Fujita, Etsuko
   Himeda, Yuichiro
TI Mechanistic Insight through Factors Controlling Effective Hydrogenation
   of CO2 Catalyzed by Bioinspired Proton-Responsive Iridium(III) Complexes
SO ACS CATALYSIS
LA English
DT Article
DE proton-responsive iridium complexes; CO2 hydrogenation; formate;
   deuterium kinetic isotope effect; proton relay
ID 2ND COORDINATION SPHERE; CARBON-DIOXIDE; FORMIC-ACID; H-2 PRODUCTION;
   HOMOGENEOUS HYDROGENATION; MOLECULAR CATALYSTS; ALKYL FORMATES;
   AQUEOUS-MEDIA; DFT ANALYSIS; WATER
AB Reversible H-2 storage near room temperature and pressure with pH as the "switch" for controlling the direction of the reaction has been demonstrated (Nat. Chem., 2012, 4, 383-388). Several bioinspired "proton-responsive" mononuclear Ir(III) catalysts for CO2 hydrogenation were prepared to gain mechanistic insight through investigation of the factors that control the effective generation of formate. These factors include (1) kinetic isotope effects by water, hydrogen, and bicarbonate; (2) position and number of hydroxyl groups on bpy-type ligands; and (3) mono- vs dinuclear iridium complexes. We have, for the first time, obtained clear evidence from kinetic isotope effects and computational studies of the involvement of a water molecule in the rate-determining heterolysis of H-2 and accelerated proton transfer by formation of a water bridge in CO2 hydrogenation catalyzed by bioinspired complexes bearing a pendent base. Furthermore, contrary to expectations, a more significant enhancement of the catalytic activity was observed from electron donation by the ligand than on the number of the active metal centers.
C1 [Wang, Wan-Hui; Himeda, Yuichiro] Natl Inst Adv Ind Sci & Technol, Tsukuba, Ibaraki 3058565, Japan.
   [Wang, Wan-Hui; Himeda, Yuichiro] Japan Sci & Technol Agcy, ACT C, Kawaguchi, Saitama 3320012, Japan.
   [Muckerman, James T.; Fujita, Etsuko] Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA.
RP Muckerman, JT (reprint author), Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA.
EM muckerma@bnl.gov; fujita@bnl.gov; himeda.y@aist.go.jp
RI Himeda, Yuichiro/E-8613-2014; Wang, Wan-Hui/J-8773-2012
OI Wang, Wan-Hui/0000-0002-5943-4589
FU U.S. Department of Energy [DE-AC02-98CH10886]; Division of Chemical
   Sciences, Geosciences, & Biosciences, Office of Basic Energy Sciences;
   Japan Science and Technology Agency (JST), ACT-C
FX Y.H. and W.-H.W. thank the Japan Science and Technology Agency (JST),
   ACT-C for financial support. The work at BNL was carried out under
   contract DE-AC02-98CH10886 with the U.S. Department of Energy and
   supported by its Division of Chemical Sciences, Geosciences, &
   Biosciences, Office of Basic Energy Sciences.
NR 44
TC 57
Z9 57
U1 3
U2 141
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 2155-5435
J9 ACS CATAL
JI ACS Catal.
PD MAY
PY 2013
VL 3
IS 5
BP 856
EP 860
DI 10.1021/cs400172j
PG 5
WC Chemistry, Physical
SC Chemistry
GA 139NJ
UT WOS:000318589100008
ER

PT J
AU Chmely, SC
   Kim, S
   Ciesielski, PN
   Jimenez-Oses, G
   Paton, RS
   Beckham, GT
AF Chmely, Stephen C.
   Kim, Seonah
   Ciesielski, Peter N.
   Jimenez-Oses, Gonzalo
   Paton, Robert S.
   Beckham, Gregg T.
TI Mechanistic Study of a Ru-Xantphos Catalyst for Tandem Alcohol
   Dehydrogenation and Reductive Aryl-Ether Cleavage
SO ACS CATALYSIS
LA English
DT Article
DE Ru-xantphos; aryl-ether cleavage; dehydrogenation; oxidative reduction;
   lignin deconstruction; reductive elimination
ID C BOND FORMATION; EFFECTIVE CORE POTENTIALS; CARBON-OXYGEN BOND;
   HYDROGEN-TRANSFER; BITE ANGLE; REACTION COORDINATE; OXIDATIVE ADDITION;
   VANADIUM CATALYST; RUTHENIUM COMPLEX; PI-STABILIZATION
AB We employ density functional theory (DFT) calculations and kinetics measurements to understand the mechanism of a xantphos-containing molecular ruthenium catalyst acting on an alkyl aryl ether linkage similar to that found in lignin to produce acetophenone and phenol. The most favorable reaction pathway suggested from DFT is compared to kinetics measurements, and good agreement is found between the predicted and the measured activation barriers. The DFT calculations reveal several interesting features, including an unusual 5-membered transition state structure for oxidative insertion in contrast to the typically proposed 3-membered transition state, a preference for an O-bound over a C-bound Ru-enolate, and a significant kinetic preference for the order of product release from the catalyst. The experimental measurements confirm that the reaction proceeds via a free ketone intermediate, but also suggest that the conversion of the intermediate ketone to acetophenone and phenol does not necessarily require ketone dissociation from the catalyst. Overall, this work elucidates the kinetically and thermodynamically preferred reaction pathways for tandem alcohol dehydrogenation and reductive ether bond cleavage by the ruthenium-xantphos catalyst.
C1 [Chmely, Stephen C.; Kim, Seonah; Beckham, Gregg T.] Natl Bioenergy Ctr, Golden, CO 80401 USA.
   [Kim, Seonah; Beckham, Gregg T.] Natl Renewable Energy Lab, Natl Adv Biofuels Consortium, Golden, CO 80401 USA.
   [Ciesielski, Peter N.] Biosci Ctr, Golden, CO 80401 USA.
   [Jimenez-Oses, Gonzalo] Univ Calif Los Angeles, Dept Chem & Biochem, Los Angeles, CA 90095 USA.
   [Paton, Robert S.] Univ Oxford, Dept Chem, Chem Res Lab, Oxford OX1 3TA, England.
   [Beckham, Gregg T.] Colorado Sch Mines, Dept Chem Engn, Golden, CO 80401 USA.
RP Paton, RS (reprint author), Univ Oxford, Dept Chem, Chem Res Lab, Mansfield Rd, Oxford OX1 3TA, England.
EM robert.paton@chem.ox.ac.uk; gregg.beckham@nrel.gov
RI Paton, Robert/A-4564-2010; Jimenez-Oses, Gonzalo/B-8057-2014; 
OI Paton, Robert/0000-0002-0104-4166; Jimenez-Oses,
   Gonzalo/0000-0003-0105-4337; Chmely, Stephen/0000-0002-2637-9974
FU National Renewable Energy Laboratory; Office of the Biomass Program;
   National Advanced Biofuels Consortium; DOE's Office of the Biomass
   Program through Recovery Act Funds; Oxford University Press John Fell
   Fund; Royal Society [RG RG110617]; NSF XSEDE [MCB090159]; DOE Office of
   EERE [DE-AC36-08GO28308]
FX S.C.C., S.K and G.T.B. acknowledge support from the National Renewable
   Energy Laboratory's Laboratory Directed Research and Development funding
   and the Office of the Biomass Program. S.K. and G.T.B. also acknowledge
   support from the National Advanced Biofuels Consortium, which is funded
   by the DOE's Office of the Biomass Program through Recovery Act Funds.
   R.S.P. thanks the Oxford University Press John Fell Fund and the Royal
   Society (RG RG110617) for funding. Computer time was provided by the
   Trestles and Gordon clusters at the San Diego Supercomputing Center and
   the Ember cluster at NCSA under the NSF XSEDE Grant MCB090159 and by the
   NREL Computational Sciences Center supported by the DOE Office of EERE
   under Contract Number DE-AC36-08GO28308. Mark Nimlos, Baron Peters,
   Linda Broadbelt, Abraham Yanez-McKay, and Luc Moens are thanked for
   helpful discussions, and we thank Christopher Chang for a critical
   reading of the manuscript. We also wish to thank the reviewers for their
   helpful comments and suggestions.
NR 78
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U1 7
U2 118
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 2155-5435
J9 ACS CATAL
JI ACS Catal.
PD MAY
PY 2013
VL 3
IS 5
BP 963
EP 974
DI 10.1021/cs400110r
PG 12
WC Chemistry, Physical
SC Chemistry
GA 139NJ
UT WOS:000318589100021
ER

PT J
AU Xu, WQ
   Liu, ZY
   Johnston-Peck, AC
   Senanayake, SD
   Zhou, G
   Stacchiola, D
   Stach, EA
   Rodriguez, JA
AF Xu, Wenqian
   Liu, Zongyuan
   Johnston-Peck, Aaron C.
   Senanayake, Sanjaya D.
   Zhou, Gong
   Stacchiola, Dario
   Stach, Eric A.
   Rodriguez, Jose A.
TI Steam Reforming of Ethanol on Ni/CeO2: Reaction Pathway and Interaction
   between Ni and the CeO2 Support
SO ACS CATALYSIS
LA English
DT Article
DE ethanol; steam reforming; nickel; hydrogen production; ceria
ID TEMPERATURE-PROGRAMMED DESORPTION; TRANSFORM INFRARED-SPECTROSCOPY;
   NOBLE-METAL CATALYSTS; SITU FT-IR; HYDROGEN-PRODUCTION; BIO-ETHANOL;
   REACTION-MECHANISM; FOURIER-TRANSFORM; PARTIAL OXIDATION; FUEL-CELLS
AB The steam reforming of ethanol on a Ni-based CeO2-supported catalyst was studied using in situ X-ray diffraction (XRD), operando diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS), and mass spectroscopy (MS) with a focus on the structural characterization of the catalysts, Chemical-identification of the reaction pathway, and understanding of the interaction between Ni and the CeO2 support. Ethoxy, acetate, carbonate, and hydroxyl species are identified by DRIFTS as surface intermediates that appear during the reaction process. The oxidation of ethoxy to acetate and the decomposition of acetate are two key steps in the steam reforming process. The CeO2 support facilitates the oxidation of ethoxy to acetate below 350 degrees C. Above 350 degrees C, the Ni metal catalyzes dissociation of the C-C bond in acetate to form carbonate and methyl, something that the CeO2 support is not able to do. The Ce(III) sites produced by the reduction of ceria in ethanol help to dissociate water forming the surface hydroxyl groups, which react with the methyl groups to produce CO2 and inhibited the methyl groups progress to CH4 Post-reaction transmission electron microscopy (TEM) images of the Ni/CeO2 catalyst reveal two types of carbon configurations: encapsulating carbon and filamentous carbon . A water-rich atmosphere favors formation of carbon filaments, which do not deactivate two catalyst.
C1 [Xu, Wenqian; Liu, Zongyuan; Senanayake, Sanjaya D.; Zhou, Gong; Stacchiola, Dario; Rodriguez, Jose A.] Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA.
   [Johnston-Peck, Aaron C.; Stach, Eric A.] Brookhaven Natl Lab, Ctr Funct Nanomat, Upton, NY 11973 USA.
RP Rodriguez, JA (reprint author), Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA.
EM rodrigez@bril.gov
RI Stach, Eric/D-8545-2011; Stacchiola, Dario/B-1918-2009; Xu,
   Wenqian/M-5906-2013; Senanayake, Sanjaya/D-4769-2009
OI Stach, Eric/0000-0002-3366-2153; Stacchiola, Dario/0000-0001-5494-3205;
   Senanayake, Sanjaya/0000-0003-3991-4232
FU U.S. Department of Energy (DOE), Office of Basic Energy Science
   [DE-AC02-98CH10086]
FX The work carried out at the BNL Chemistry Department, CFN and the NSLS
   was financed by the U.S. Department of Energy (DOE), Office of Basic
   Energy Science (DE-AC02-98CH10086).
NR 67
TC 68
Z9 68
U1 12
U2 170
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 2155-5435
J9 ACS CATAL
JI ACS Catal.
PD MAY
PY 2013
VL 3
IS 5
BP 975
EP 984
DI 10.1021/cs4000969
PG 10
WC Chemistry, Physical
SC Chemistry
GA 139NJ
UT WOS:000318589100022
ER

PT J
AU Wang, HM
   Male, J
   Wang, Y
AF Wang, Huamin
   Male, Jonathan
   Wang, Yong
TI Recent Advances in Hydrotreating of Pyrolysis Bio-Oil and Its
   Oxygen-Containing Model Compounds
SO ACS CATALYSIS
LA English
DT Review
DE biomass; lignocellulose; pyrolysis bio-oil; hydrodeoxygenation;
   catalysts; noble metal catalysts; model compounds
ID AQUEOUS-PHASE HYDRODEOXYGENATION; SUPPORTED PLATINUM CATALYSTS;
   METHYL-SUBSTITUTED PHENOLS; SULFIDE PARTIAL-PRESSURE; ACETIC-ACID
   REDUCTION; FIXED-BED REACTOR; HYDROGEN-SULFIDE; SELECTIVE HYDROGENATION;
   TRANSPORTATION FUELS; PALLADIUM CATALYSTS
AB Considerable worldwide interest exists in discovering renewable energy sources that can substitute for fossil fuels. Lignocellulosic biomass, the most abundant and inexpensive renewable feedstock on the planet, has a great potential for sustainable production of fuels, chemicals, and carbon-based materials. Fast pyrolysis integrated with hydrotreating, one of the simplest, most cost-effective, and most efficient processes to convert lignocellulosic biomass to liquid hydrocarbon fuels for transportation, has attracted significant attention in recent decades. However, effective hydrotreating of pyrolysis bio-oil presents a daunting challenge to the commercialization of biomass conversion via pyrolysis-hydrotreating. Specifically, the development of active, selective, and stable hydrotreating catalysts is problematic due to the poor quality of current pyrolysis bio-oil feedstock (i.e., high oxygen content, molecular complexity, coking propensity, and corrosiveness). Significant research has been conducted to address the practical issues and provide fundamental understanding of hydrotreating and hydrodeoxygenation (HDO) of bio-oils and their oxygen-containing model compounds, including phenolics, furans, and carboxylic acids. A wide range of catalysts have been studied, including conventional Mo-based sulfide catalysts and noble metal catalysts. Noble metal catalysts have been the primary focus of recent research because of their excellent catalytic performances and because they do not require the use of environmentally unfriendly sulfur. Recently, the reaction mechanisms of the HDO of model compounds on noble metal catalysts and their efficacy for hydrotreating or stabilization of bio-oil have been reported . This review provides a survey of relevant literature, published over the past decade, reporting advances in the understanding of the HDO chemistry of bio-oils and their model compounds, mainly on noble metal catalysts.
C1 [Wang, Huamin; Male, Jonathan; Wang, Yong] Pacific NW Natl Lab, Richland, WA 99352 USA.
   [Wang, Yong] Washington State Univ, Voiland Sch Chem Engn & Bioengn, Pullman, WA 99163 USA.
RP Wang, Y (reprint author), Pacific NW Natl Lab, POB 999,902 Battelle Blvd, Richland, WA 99352 USA.
EM Yong.Wang@pnnl.gov
FU U.S. Department of Energy Office of Energy Efficiency and Renewable
   Energy Biomass program; United States Department of Energy
   [DE-AC05-76RL01830]
FX This work was supported by the U.S. Department of Energy Office of
   Energy Efficiency and Renewable Energy Biomass program. The Pacific
   Northwest National Laboratory is operated by Battelle for the United
   States Department of Energy under Contract DE-AC05-76RL01830.
NR 169
TC 159
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U1 46
U2 408
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 2155-5435
J9 ACS CATAL
JI ACS Catal.
PD MAY
PY 2013
VL 3
IS 5
BP 1047
EP 1070
DI 10.1021/cs400069z
PG 24
WC Chemistry, Physical
SC Chemistry
GA 139NJ
UT WOS:000318589100031
ER

PT J
AU Farkas, D
   Caro, A
   Bringa, E
   Crowson, D
AF Farkas, Diana
   Caro, Alfredo
   Bringa, Eduardo
   Crowson, Douglas
TI Mechanical response of nanoporous gold
SO ACTA MATERIALIA
LA English
DT Article
DE Nanoporous; Mechanical properties; Molecular dynamics
ID EMBEDDED-ATOM-METHOD; YIELD STRENGTH; AU; BEHAVIOR; METALS; NANOWIRES;
   STABILITY; INDENTATION; ALLOYS; MODES
AB We report the results of computational tensile and compressive tests for model bi-continuous nanoporous gold structures using atomistic simulations with empirical many-body potentials and molecular dynamics. The results are compared with the predictions of scaling laws for coarser-scale foams and with available experimental data. We find a surprising substantial tension/compression asymmetry in yield due to the surface stress that sets the filament under compression, providing a bias favoring yielding in compression. We provide a model for our results based on a ligament strength value close to the theoretical strength of Au, and the surface stress. The model predicts a significant tension/compression asymmetry for ligament sizes below, similar to 10 nm and pore collapse for ligament sizes below 1 nm. We also observe an unexpected compaction tendency under tension characterized by a decrease in the total volume of the sample of 15% for samples deformed under tension by 30%. The mechanism of the compaction involves a decrease in the average pore size and pore collapse resulting from plasticity within the ligaments. (C) 2013 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
C1 [Farkas, Diana; Crowson, Douglas] Virginia Polytech Inst & State Univ, Dept Mat Sci & Engn, Blacksburg, VA 24061 USA.
   [Caro, Alfredo] Los Alamos Natl Lab, Div Mat Sci & Technol, Los Alamos, NM 87544 USA.
   [Bringa, Eduardo] Univ Nacl Cuyo, CONICET, RA-5500 Mendoza, Argentina.
   [Bringa, Eduardo] Univ Nacl Cuyo, Inst Ciencias Basicas, RA-5500 Mendoza, Argentina.
RP Farkas, D (reprint author), Virginia Polytech Inst & State Univ, Dept Mat Sci & Engn, Blacksburg, VA 24061 USA.
EM diana@vt.edu
FU NSF IRD program; Argentinean Science Agency [PICT2009-0092]
FX D.F. acknowledges support from the NSF IRD program. A.C. acknowledges
   the Los Alamos Laboratory Directed Research and Development Program.
   E.B. acknowledges funding from PICT2009-0092, from the Argentinean
   Science Agency.
NR 48
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PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 1359-6454
J9 ACTA MATER
JI Acta Mater.
PD MAY
PY 2013
VL 61
IS 9
BP 3249
EP 3256
DI 10.1016/j.actamat.2013.02.013
PG 8
WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical
   Engineering
SC Materials Science; Metallurgy & Metallurgical Engineering
GA 138TS
UT WOS:000318533500011
ER

PT J
AU Henager, CH
   McCloy, JS
   Ramuhalli, P
   Edwards, DJ
   Hu, SY
   Li, YL
AF Henager, Charles H., Jr.
   McCloy, John S.
   Ramuhalli, Pradeep
   Edwards, Danny J.
   Hu, Shenyang
   Li, Yulan
TI Investigation of magnetic signatures and microstructures for
   heat-treated ferritic/martensitic HT-9 alloy
SO ACTA MATERIALIA
LA English
DT Article
DE Ferritic steels; Magnetic properties; Hardness; Ferromagnetic;
   Non-destructive evaluation
ID PRESSURE-VESSEL STEELS; 1ST-ORDER REVERSAL CURVES; MINOR HYSTERESIS
   LOOPS; NONDESTRUCTIVE EVALUATION; BARKHAUSEN NOISE; RADIATION-DAMAGE;
   FERRITIC STEELS; MODEL ALLOYS; RPV STEEL; EMBRITTLEMENT
AB There is increased interest in improved methods for in situ non-destructive interrogation of materials for nuclear reactors in order to ensure reactor safety and quantify material degradation (particularly embrittlement) prior to failure. Therefore, a prototypical ferrific/martensitic alloy, HT-9, of interest to the nuclear materials community was investigated to assess microstructure effects on micromagnetics measurements (Barkhausen noise emission, magnetic hysteresis measurements, and first order reversal curve analysis) for samples undergoing three different heat treatments. Microstructural and physical measurements consisted of high precision density, resonant ultrasound elastic constant, Vickers microhardness, grain size, and texture determination. These were varied in the HT-9 alloy samples and related to various magnetic signatures. In parallel, a mesoscale microstructure model was created for a-iron and the effects of polycrystallinity and the demagnetization factor were explored. It was observed that Barkhausen noise emission decreased with increasing hardness and decreasing grain size (lath spacing), while coercivity increased. The results are discussed in terms of the use of magnetic signatures for the non-destructive interrogation of radiation damage and other microstructural changes in ferritic/martensitic alloys. (C) 2013 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
C1 [Henager, Charles H., Jr.; McCloy, John S.; Ramuhalli, Pradeep; Edwards, Danny J.; Hu, Shenyang; Li, Yulan] Pacific NW Natl Lab, Richland, WA 99352 USA.
RP Henager, CH (reprint author), Pacific NW Natl Lab, POB 999, Richland, WA 99352 USA.
EM chuck.henager@pnnl.gov
RI McCloy, John/D-3630-2013; 
OI McCloy, John/0000-0001-7476-7771; Ramuhalli,
   Pradeep/0000-0001-6372-1743; Henager, Chuck/0000-0002-8600-6803; HU,
   Shenyang/0000-0002-7187-3082
FU Laboratory-Directed Research and Development Program at Pacific
   Northwest National Laboratory (PNNL); Sustainable Nuclear Power
   Initiative at PNNL; US Department of Energy [DE-AC06-76RLO 1830]
FX This research was partially supported under the Laboratory-Directed
   Research and Development Program at Pacific Northwest National
   Laboratory (PNNL). The Sustainable Nuclear Power Initiative at PNNL
   supported a portion of this work. PNNL is a multi-program national
   laboratory operated by Battelle Memorial Institute for the US Department
   of Energy under DE-AC06-76RLO 1830. The authors thank Anthony Cumbo and
   Harry Reichard of Princeton Measurements Corp. for their kind offer to
   measure the FORC data on the HT-9 samples using their Micromag model
   3900 VSM instrument, and Jacob Fricke at PNNL for his assistance with
   the Barkhausen measurements. The authors also thank Michael Winklhofer
   for assistance in analyzing the FORC data and use of his Matlab analysis
   program. The authors thank Tim Droubay and Robert Montgomery for helpful
   discussions.
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PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 1359-6454
EI 1873-2453
J9 ACTA MATER
JI Acta Mater.
PD MAY
PY 2013
VL 61
IS 9
BP 3285
EP 3296
DI 10.1016/j.actamat.2013.02.017
PG 12
WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical
   Engineering
SC Materials Science; Metallurgy & Metallurgical Engineering
GA 138TS
UT WOS:000318533500015
ER

PT J
AU Yang, F
   Coughlin, DR
   Phillips, PJ
   Yang, L
   Devaraj, A
   Kovarik, L
   Noebe, RD
   Mills, MJ
AF Yang, F.
   Coughlin, D. R.
   Phillips, P. J.
   Yang, L.
   Devaraj, A.
   Kovarik, L.
   Noebe, R. D.
   Mills, M. J.
TI Structure analysis of a precipitate phase in an Ni-rich high-temperature
   NiTiHf shape memory alloy
SO ACTA MATERIALIA
LA English
DT Article
DE Shape memory alloys (SMAs); Precipitation; Crystal structure; High-angle
   annular dark field (HAADF); Ab initio electron theory
ID TOTAL-ENERGY CALCULATIONS; WAVE BASIS-SET; MARTENSITIC-TRANSFORMATION;
   ULTRASOFT PSEUDOPOTENTIALS; MICROSTRUCTURE; TRANSITION; SIMULATION; STEM
AB Thermal aging of the high-temperature shape memory alloy 50.3Ni-29.7Ti-20Hf (at.%) introduces a novel precipitate phase that plays an important role in improving shape memory properties. The precipitate phase was investigated by conventional electron diffraction, high-resolution scanning transmission electron microscopy (STEM) and three-dimensional atom probe tomography. An unrelaxed orthorhombic atomic structural model is proposed based on these observations. This model was subsequently relaxed by ab initio calculations. As a result of the relaxation, atom shuffle displacements occur, which in turn yields improved agreement with the STEM images. The relaxed structure, which is termed the "H phase", has also been verified to be thermodynamically stable at 0 K. (C) 2013 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
C1 [Yang, F.; Coughlin, D. R.; Yang, L.; Mills, M. J.] Ohio State Univ, Columbus, OH 43210 USA.
   [Phillips, P. J.] Univ Illinois, Chicago, IL 60608 USA.
   [Devaraj, A.; Kovarik, L.] Pacific NW Natl Lab, Richland, WA 99354 USA.
   [Noebe, R. D.] NASA Glenn Res Ctr, Cleveland, OH 44135 USA.
RP Yang, F (reprint author), Ohio State Univ, Columbus, OH 43210 USA.
EM yang.1052@osu.edu
RI Mills, Michael/I-6413-2013; Kovarik, Libor/L-7139-2016
FU US Department of Energy, Office of Basic Energy Sciences [DE-SC0001258];
   NASA Fundamental Aeronautics Program, Supersonics Project, Dale Hopkins,
   API; DOE's Office of Biological and Environmental Research; DOE
   [DE-AC05-76RLO1830]
FX This work was supported by the US Department of Energy, Office of Basic
   Energy Sciences under Grant #DE-SC0001258 (for F.Y. and M.J.M.). R.D.N.
   acknowledges funding from the NASA Fundamental Aeronautics Program,
   Supersonics Project, Dale Hopkins, API. A part of this work was
   conducted in the William R. Wiley Environmental Molecular Sciences
   Laboratory (EMSL), a national scientific user facility sponsored by
   DOE's Office of Biological and Environmental Research and located at
   PNNL. PNNL is operated by Battelle for the DOE under Contract
   DE-AC05-76RLO1830.
NR 25
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PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 1359-6454
J9 ACTA MATER
JI Acta Mater.
PD MAY
PY 2013
VL 61
IS 9
BP 3335
EP 3346
DI 10.1016/j.actamat.2013.02.023
PG 12
WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical
   Engineering
SC Materials Science; Metallurgy & Metallurgical Engineering
GA 138TS
UT WOS:000318533500020
ER

PT J
AU Tong, W
   Yang, H
   Moeck, P
   Nandasiri, MI
   Browning, ND
AF Tong, Wen
   Yang, Hao
   Moeck, Peter
   Nandasiri, Manjula I.
   Browning, Nigel D.
TI General schema for [001] tilt grain boundaries in dense packing cubic
   crystals
SO ACTA MATERIALIA
LA English
DT Article
DE STEM HAADF; Grain boundaries; Structural units; Crystallography
ID ATOMIC-STRUCTURE; STABILIZED-ZIRCONIA; ELECTRIC PROPERTIES; CERIA;
   SEGREGATION; METALS; CA
AB Atomic resolution Z-contrast images from a series of CeO2 [00 1] tilt grain boundaries at coincident site lattice (CSL) or near-CSL misorientations can all be explained within a structural unit model. These structural units (which cover all boundaries from 0 degrees to 90 degrees) show striking similarities to comparable CSL boundaries observed in cubic crystal structures that are also derived from dense packing (face centered cubic metal; rocksalt, perovskite, etc.). A general model for the structure of grain boundaries in such similarly structured materials systems has been developed that is based on the crystallography of the parent structures. Changes away from these predicted grain boundary symmetries can be interpreted as showing the frustration of symmetry caused by the incorporation of point defects (vacancies and impurities). This general model for grain boundary structures can, in principle, provide a means to infer the structure property relationships in broad classes of materials. (C) 2013 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
C1 [Tong, Wen; Yang, Hao] Univ Calif Davis, Dept Chem Engn & Mat Sci, Davis, CA 95616 USA.
   [Moeck, Peter] Portland State Univ, Dept Phys, Portland, OR 97201 USA.
   [Nandasiri, Manjula I.] Pacific NW Natl Lab, Environm Mol Sci Lab, Richland, WA 99352 USA.
   [Browning, Nigel D.] Pacific NW Natl Lab, Fundamental & Computat Sci Directorate, Richland, WA 99352 USA.
RP Yang, H (reprint author), Univ Calif Davis, Dept Chem Engn & Mat Sci, 1 Shields Ave, Davis, CA 95616 USA.
EM haoyang@ucdavis.edu
OI Browning, Nigel/0000-0003-0491-251X
FU US Department of Energy [DE-FG02-03ER46057, DE-AC05-76RL01830];
   Department of Energy's Office of Biological and Environmental Research
FX This work is supported by the US Department of Energy Grant No.
   DE-FG02-03ER46057. A portion of the research was performed using EMSL, a
   national scientific user facility sponsored by the Department of
   Energy's Office of Biological and Environmental Research and located at
   Pacific Northwest National Laboratory, which is operated by Battelle for
   the US Department of Energy under Contract DE-AC05-76RL01830.
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PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 1359-6454
J9 ACTA MATER
JI Acta Mater.
PD MAY
PY 2013
VL 61
IS 9
BP 3392
EP 3398
DI 10.1016/j.actamat.2013.02.029
PG 7
WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical
   Engineering
SC Materials Science; Metallurgy & Metallurgical Engineering
GA 138TS
UT WOS:000318533500025
ER

PT J
AU Wu, CC
   Chung, PW
   Aubry, S
   Munday, LB
   Arsenlis, A
AF Wu, C. -C.
   Chung, P. W.
   Aubry, S.
   Munday, L. B.
   Arsenlis, A.
TI The strength of binary junctions in hexagonal close-packed crystals
SO ACTA MATERIALIA
LA English
DT Article
DE Discrete dislocation dynamics; Strength; Yield surface; hcp Metals
ID DISLOCATION JUNCTIONS; FOREST INTERACTIONS; FCC CRYSTALS; SLIP SYSTEMS;
   METALS; SIMULATIONS; DYNAMICS; STRESS; MECHANISMS; DENSITY
AB A comparative study of non-coplanar binary dislocation junctions in magnesium (Mg) and beryllium (Be) is presented to examine the effects of elastic properties and active Burgers vectors on junction formation and destruction in hexagonal close-packed (hcp) crystals via discrete dislocation dynamics simulations. Two junction configurations formed at intersecting prismatic (01 (1) over bar0)/basal (0001) planes and type-II pyramidal ((2) over bar 112)/prismatic (01 (1) over bar0) planes are studied using Burgers vectors of varying magnitudes. The equilibrium junctions are created from two intersecting straight gliding dislocations, and their subsequent strengths are evaluated under uniform applied stresses. The relative junction strengths between Mg and Be are consistent with their relative elastic stiffness, i.e., the modulus of elasticity for Mg is approximately one order of magnitude smaller than that of Be, and their junction strengths are similarly one order of magnitude apart. In general, the yield surfaces for junctions in Be are larger than those in Mg after normalization with the respective elastic moduli and Poisson's ratios. All yield surfaces exhibit a strong symmetry. However, the size and shape of the yield surfaces depend on the slip systems, especially the active Burgers vectors. The yield surfaces of hcp crystals can resemble those of face-centered cubic or body-centered cubic crystals when the active Burgers vectors of the dislocations involved in the junction are of type < a >, namely < 11 (2) over bar0 >, and are distinct when Burgers vectors of different types are used: for instance, a type < a + c >, namely 1/3 < 11 (2) over bar(3) over bar >, interacting with a type < a >. It was also found that junctions with more edge part exhibit more elongated yield surfaces than those with more screw part, and slip systems involved with < a > Burgers vectors result in smaller yield surfaces. These results demonstrate that junction strengths for hcp crystals are largely determined by elastic properties and Burgers vectors. The work aims to assess the effects of intrinsic material properties and dislocation slip systems on the strength of different binary dislocation junctions for general hcp structures. (C) 2013 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
C1 [Wu, C. -C.; Chung, P. W.; Munday, L. B.] USA, Res Lab, Computat & Informat Sci Directorate, Aberdeen Proving Ground, MD 21005 USA.
   [Aubry, S.; Arsenlis, A.] Lawrence Livermore Natl Lab, Condensed Matter & Mat Div, High Performance Computat Mat Sci & Chem Grp, Livermore, CA 94551 USA.
RP Wu, CC (reprint author), USA, Res Lab, Computat & Informat Sci Directorate, Aberdeen Proving Ground, MD 21005 USA.
EM chi-chin.wu.ctr@mail.mil
FU Oak Ridge Affiliated Universities (ORAU) in Maryland [W911QX-04-C-0129];
   Army Research Laboratory (ARL) Enterprise for Multiscale Research of
   Materials; ARL Director's Research Initiative (DRI); US Department of
   Energy by Lawrence Livermore National Laboratory [DE-AC52-07NA27344]
FX This work was conducted through support from the Oak Ridge Affiliated
   Universities (ORAU) in Maryland under Contract No. W911QX-04-C-0129 at
   the US Army Research Laboratory, the Army Research Laboratory (ARL)
   Enterprise for Multiscale Research of Materials and the ARL Director's
   Research Initiative (DRI). Computing resources were provided by the
   Department of Defense (DoD) High Performance Supercomputing Resource
   Center (DSRC). This work was also performed under the auspices of the US
   Department of Energy by Lawrence Livermore National Laboratory under
   Contract No. DE-AC52-07NA27344. The authors gratefully appreciate many
   valuable discussions with colleagues at ARL, including Kenneth A. Jones,
   Jaroslaw Knap, Joshua Crone and Kenneth Leiter.
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SN 1359-6454
J9 ACTA MATER
JI Acta Mater.
PD MAY
PY 2013
VL 61
IS 9
BP 3422
EP 3431
DI 10.1016/j.actamat.2013.02.033
PG 10
WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical
   Engineering
SC Materials Science; Metallurgy & Metallurgical Engineering
GA 138TS
UT WOS:000318533500028
ER

PT J
AU Beaudoin, AJ
   Obstalecki, M
   Tayon, W
   Hemquist, M
   Mudrock, R
   Kenesei, P
   Lienert, U
AF Beaudoin, A. J.
   Obstalecki, M.
   Tayon, W.
   Hemquist, M.
   Mudrock, R.
   Kenesei, P.
   Lienert, U.
TI In situ assessment of lattice strain in an Al-Li alloy
SO ACTA MATERIALIA
LA English
DT Article
DE Synchrotron diffraction; In situ tension test; Material properties;
   Aluminum alloy
ID ALUMINUM-LITHIUM ALLOYS; FRACTURE; ANISOTROPY; DEFORMATION; ORIENTATION;
   TOUGHNESS; BEHAVIOR; FATIGUE; SPACE; BULK
AB The lattice strains of individual grains are measured in an Al-Li alloy, AA 2195, using high-energy X-ray diffraction at a synchrotron source. The diffraction of individual grains in this highly textured production alloy was isolated through use of a depth-defining aperture. It is shown that hydrostatic stress, and in turn the stress triaxiality, can vary significantly from grain to grain. (C) 2013 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
C1 [Beaudoin, A. J.] Univ Illinois, Urbana, IL 61801 USA.
   [Obstalecki, M.] Cornell Univ Ithaca, Ithaca, NY USA.
   [Tayon, W.] NASA, Langley Res Ctr, Hampton, VA 23665 USA.
   [Hemquist, M.] Northrop Grumman, Azusa, CA USA.
   [Mudrock, R.] Honeywell, Des Plaines, IL USA.
   [Kenesei, P.] Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA.
   [Lienert, U.] Deutsch Elektronen Synchrotron DESY, Hamburg, Germany.
RP Beaudoin, AJ (reprint author), Univ Illinois, 1206 West Green St, Urbana, IL 61801 USA.
EM abeaudoi@illinois.edu; mo362@-comell.edu; wesley.a.tayon@nasa.gov;
   mark.hemquist@gmail.com; rstorer87@gmail.com; kenesei@aps.anl.gov;
   ulrich.lienert@desy.de
FU NASA [NNX09AN21G]; US Department of Energy [DEFG36-05GO15049]; US
   Department of Energy, Office of Science, Office of Basic Energy
   Sciences, [DE-AC02-06CH11357]
FX This work was supported by NASA under Contract No. NNX09AN21G and the US
   Department of Energy under Contract No. DEFG36-05GO15049. Use of the
   Advanced Photon Source was supported by the US Department of Energy,
   Office of Science, Office of Basic Energy Sciences, under Contract No.
   DE-AC02-06CH11357. Ms. Katherine Halm assisted in the HEDM experiment
   and Dr. Roy Crooks aided in collection of the EBSD images. Drs. Jette
   Oddershede, Soren Schmidt and Jon Wright provided assistance in use of
   the Fable suite of analysis programs. Conversations with Doug Wells and
   Preston McGill of the Marshall Spaceflight Center offered guidance to
   our studies of Al-Li alloys. We also thank Dr. Roberto Rioja for
   comments and directing us to Ref. [18].
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PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 1359-6454
EI 1873-2453
J9 ACTA MATER
JI Acta Mater.
PD MAY
PY 2013
VL 61
IS 9
BP 3456
EP 3464
DI 10.1016/j.actamat.2013.02.037
PG 9
WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical
   Engineering
SC Materials Science; Metallurgy & Metallurgical Engineering
GA 138TS
UT WOS:000318533500031
ER

PT J
AU Rajbanshi, A
   Wan, S
   Custelcean, R
AF Rajbanshi, Arbin
   Wan, Shun
   Custelcean, Radu
TI Dihydrogen Phosphate Clusters: Trapping H2PO4- Tetramers and Hexamers in
   Urea-Functionalized Molecular Crystals
SO CRYSTAL GROWTH & DESIGN
LA English
DT Article
ID ANION-BINDING; RECOGNITION; WATER; IONS
AB Co-crystallization of two urea-functionalized ligands with tetrabutylammonium (TBA) dihydrogen phosphate resulted in the isolation of discrete (H2PO4-)(4) and (H2PO4-)(6) dusters stabilized in the crystalline state by multiple urea hydrogen bonds. Structural analysis by single-crystal X-ray diffraction, combined with a Cambridge;Structural Database survey of (H2PO4-)(n) aggregates, established that these clusters display unique topologies and hydrogen-bonding connectivities.
C1 [Rajbanshi, Arbin; Wan, Shun; Custelcean, Radu] Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN 37831 USA.
RP Custelcean, R (reprint author), Oak Ridge Natl Lab, POB 2008,MS 6119, Oak Ridge, TN 37831 USA.
EM custelceanr@ornl.gov
RI Wan, Shun/E-8730-2011; Custelcean, Radu/C-1037-2009
OI Wan, Shun/0000-0002-4224-3719; Custelcean, Radu/0000-0002-0727-7972
FU Division of Chemical Sciences, Geosciences, and Biosciences, Office of
   Basic Energy Sciences, U.S. Department of Energy
FX This research was sponsored by the Division of Chemical Sciences,
   Geosciences, and Biosciences, Office of Basic Energy Sciences, U.S.
   Department of Energy.
NR 24
TC 13
Z9 13
U1 4
U2 25
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1528-7483
J9 CRYST GROWTH DES
JI Cryst. Growth Des.
PD MAY
PY 2013
VL 13
IS 5
BP 2233
EP 2237
DI 10.1021/cg400336q
PG 5
WC Chemistry, Multidisciplinary; Crystallography; Materials Science,
   Multidisciplinary
SC Chemistry; Crystallography; Materials Science
GA 137WH
UT WOS:000318468400052
ER

PT J
AU Sathaye, JA
   Dale, LL
   Larsen, PH
   Fitts, GA
   Koy, K
   Lewis, SM
   de Lucena, AFP
AF Sathaye, Jayant A.
   Dale, Larry L.
   Larsen, Peter H.
   Fitts, Gary A.
   Koy, Kevin
   Lewis, Sarah M.
   Pereira de Lucena, Andre Frossard
TI Rising Temps, Tides, and Wildfires Assessing the Risk to California's
   Energy Infrastructure from Projected Climate Change
SO IEEE POWER & ENERGY MAGAZINE
LA English
DT Article
C1 [Sathaye, Jayant A.; Dale, Larry L.; Larsen, Peter H.; Fitts, Gary A.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
   [Larsen, Peter H.] Stanford Univ, Stanford, CA 94305 USA.
   [Koy, Kevin; Lewis, Sarah M.] Univ Calif Berkeley, Berkeley, CA 94720 USA.
   [Pereira de Lucena, Andre Frossard] Univ Fed Rio de Janeiro, BR-21941 Rio De Janeiro, Brazil.
RP Sathaye, JA (reprint author), Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
NR 5
TC 3
Z9 3
U1 0
U2 8
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 1540-7977
J9 IEEE POWER ENERGY M
JI IEEE Power Energy Mag.
PD MAY-JUN
PY 2013
VL 11
IS 3
BP 32
EP 45
DI 10.1109/MPE.2013.2245582
PG 14
WC Engineering, Electrical & Electronic
SC Engineering
GA 138PJ
UT WOS:000318520400003
ER

PT J
AU Smits, KM
   Cihan, A
   Sakaki, T
   Howington, SE
   Peters, JF
   Illangasekare, TH
AF Smits, Kathleen M.
   Cihan, Abdullah
   Sakaki, Toshihiro
   Howington, Stacy E.
   Peters, John F.
   Illangasekare, Tissa H.
TI Soil Moisture and Thermal Behavior in the Vicinity of Buried Objects
   Affecting Remote Sensing Detection: Experimental and Modeling
   Investigation
SO IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING
LA English
DT Article
DE Environmental factors; geoscience and remote sensing; land surface;
   landmine detection; soil moisture
ID IN-FIELD SOILS; LANDMINE DETECTION; WATER-CONTENT; DIURNAL CYCLE; BARE
   SOILS; MINES; TEMPERATURE; CONDUCTIVITY; SIGNATURES; DISTRIBUTIONS
AB Improvements in buried mine detection using remote sensing technology rest on understanding the effects on sensor response of spatial and temporal variability created by soil and environmental conditions. However, research efforts on mine detection have generally emphasized sensor development, while less effort has been made to evaluate the effects of the environmental conditions in which the mines are placed. If the processes governing moisture and temperature distribution near the ground surface can be captured, sensor development and deployment can be more realistically tailored to particular operational scenarios and technologies. The objective of this study is to investigate the effects of the soil environment on landmine detection by studying the influence of the thermal boundary conditions at the land-atmosphere interface and the buried objects themselves on the spatial and temporal distribution of soil moisture around shallow-buried objects. Two separate large tank experiments were performed with buried objects with different thermal properties. Experimental results were compared to results from a fully coupled heat and mass transfer numerical model. Comparison of experimental and numerical results suggests that the vapor enhancement factor used to adjust the vapor diffusive flux described based on Fick's law is not necessary under dry soil conditions. Data and simulations from this study show that the thermal signature of a buried object depends on the complex interaction among a soil's water content and its thermal and hydraulic properties. Simulated thermal and saturation contrasts were generally very different for a buried landmine than for other buried objects.
C1 [Smits, Kathleen M.; Sakaki, Toshihiro; Illangasekare, Tissa H.] Colorado Sch Mines, Ctr Expt Study Subsurface Environm Proc, Golden, CO 80401 USA.
   [Cihan, Abdullah] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Earth Sci, Berkeley, CA 94720 USA.
   [Howington, Stacy E.; Peters, John F.] USA, Engineer Res & Dev Ctr, Vicksburg, MS 39180 USA.
RP Smits, KM (reprint author), Colorado Sch Mines, Ctr Expt Study Subsurface Environm Proc, Golden, CO 80401 USA.
RI Smits, Kathleen/F-8465-2014; Cihan, Abdullah/D-3704-2015
FU U. S. Army Research Office [W911NF-04-1-0169]; Engineering Research and
   Development Center; Army Research Office
FX This work was supported by the U. S. Army Research Office under Award
   W911NF-04-1-0169 and the Engineering Research and Development Center.;
   The authors acknowledge R. Harmon from the Army Research Office for
   financial support and technical contributions.
NR 64
TC 6
Z9 6
U1 1
U2 32
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 0196-2892
J9 IEEE T GEOSCI REMOTE
JI IEEE Trans. Geosci. Remote Sensing
PD MAY
PY 2013
VL 51
IS 5
BP 2675
EP 2688
DI 10.1109/TGRS.2012.2214485
PN 1
PG 14
WC Geochemistry & Geophysics; Engineering, Electrical & Electronic; Remote
   Sensing; Imaging Science & Photographic Technology
SC Geochemistry & Geophysics; Engineering; Remote Sensing; Imaging Science
   & Photographic Technology
GA 137IJ
UT WOS:000318428700016
ER

PT J
AU Sturtevant, BT
   Pantea, C
   Sinha, DN
AF Sturtevant, Blake T.
   Pantea, Cristian
   Sinha, Dipen N.
TI Evaluation of the Transmission Line Model for Couplant Layer Corrections
   in Pulse-Echo Measurements
SO IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL
LA English
DT Article
ID TEMPERATURE; SPEED; SOUND; PRESSURE; WATER
AB An acoustic couplant layer plays an integral role in many ultrasonic nondestructive testing and material characterization applications. It is important to account for this layer for accurate time-delay measurements. In pulse-echo measurements, the couplant layer can be accounted for by modeling the frequency dependence of phase delay. In this paper, two such models are evaluated for robustness in determining an accurate phase velocity: a simple linear relationship and the acoustic transmission line with its associated nonlinear expression. For this evaluation, measurements of acoustic phase delay in an aluminum sample were made by the pulse-echo method using tone bursts of 1800 different carrier frequencies between 35 and 125 MHz. The transmission line model was fit to the measured data using an unconstrained nonlinear least squares fitting routine with two free parameters: the acoustic phase velocity in the sample and the couplant thickness. It was found that this nonlinear model was extremely sensitive to the initial parameter guesses and could not unambiguously determine both the couplant layer thickness and acoustic phase velocity. In contrast, the faster and simpler linear least squares fit to the delay data determines a unique phase velocity in agreement with resonant ultrasound spectroscopy, an independent measurement technique.
C1 [Sturtevant, Blake T.; Pantea, Cristian; Sinha, Dipen N.] Los Alamos Natl Lab, Los Alamos, NM USA.
RP Sturtevant, BT (reprint author), Los Alamos Natl Lab, Los Alamos, NM USA.
EM bsturtev@lanl.gov
RI Pantea, Cristian/D-4108-2009; 
OI Pantea, Cristian/0000-0002-0805-8923; Sinha, Dipen/0000-0002-3606-7907
FU U.S. Department of Energy (DOE) [AID 18832]
FX This work was supported by the U.S. Department of Energy (DOE) under
   award number AID 18832.
NR 17
TC 0
Z9 0
U1 0
U2 16
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 0885-3010
J9 IEEE T ULTRASON FERR
JI IEEE Trans. Ultrason. Ferroelectr. Freq. Control
PD MAY
PY 2013
VL 60
IS 5
BP 943
EP 953
DI 10.1109/TUFFC.2013.2651
PG 11
WC Acoustics; Engineering, Electrical & Electronic
SC Acoustics; Engineering
GA 141CM
UT WOS:000318703200009
PM 23661128
ER

PT J
AU Parks, DA
   Zhang, SJ
   Tittmann, BR
AF Parks, David A.
   Zhang, Shujun
   Tittmann, Bernhard R.
TI High-Temperature (> 500 degrees C) Ultrasonic Transducers: An
   Experimental Comparison Among Three Candidate Piezoelectric Materials
SO IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL
LA English
DT Article
ID ALUMINUM NITRIDE; CRYSTAL; SENSORS; COEFFICIENT; ALLOY
AB High-temperature piezoelectric crystals, including YCa4O(BO3)(3), LiNbO3, and AlN, have been studied for use in ultrasonic transducers under continuous operation for 55 h at 550 degrees C. Additionally, thermal ratcheting tests were performed on the transducers by subjecting the crystals to heat treatments followed by ultrasonic performance testing at room temperature and 500 degrees C. The changes resulting from the heat treatments were less than the statistical spread obtained in repeated experiments and were thus considered negligible. Finally, in situ measurements of the pulse-echo response of YCa4O(BO3)(3) were performed at temperatures up to 950 degrees C for the first time, showing stable characteristics up to these high temperatures.
C1 [Parks, David A.; Tittmann, Bernhard R.] Penn State Univ, Dept Engn Sci & Mech, University Pk, PA 16802 USA.
   [Zhang, Shujun] Penn State Univ, Mat Res Inst, University Pk, PA 16802 USA.
RP Parks, DA (reprint author), Idaho Natl Lab, Idaho Falls, ID 83415 USA.
EM brt4@psu.edu
FU NSF [ECCS09-25586]
FX This work was supported in part by NSF grant number ECCS09-25586.
NR 26
TC 11
Z9 11
U1 3
U2 42
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 0885-3010
EI 1525-8955
J9 IEEE T ULTRASON FERR
JI IEEE Trans. Ultrason. Ferroelectr. Freq. Control
PD MAY
PY 2013
VL 60
IS 5
BP 1010
EP 1015
DI 10.1109/TUFFC.2013.2659
PG 6
WC Acoustics; Engineering, Electrical & Electronic
SC Acoustics; Engineering
GA 141CM
UT WOS:000318703200017
PM 23661136
ER

PT J
AU Subin, ZM
   Koven, CD
   Riley, WJ
   Torn, MS
   Lawrence, DM
   Swenson, SC
AF Subin, Zachary M.
   Koven, Charles D.
   Riley, William J.
   Torn, Margaret S.
   Lawrence, David M.
   Swenson, Sean C.
TI Effects of Soil Moisture on the Responses of Soil Temperatures to
   Climate Change in Cold Regions
SO JOURNAL OF CLIMATE
LA English
DT Article
ID GROUND THERMAL REGIME; LAND-SURFACE SCHEME; FROZEN SOIL; SNOW COVER;
   HYDRAULIC-PROPERTIES; PERMAFROST CARBON; ATMOSPHERIC CO2; GLOBAL
   CLIMATE; ACTIVE LAYER; MODEL
AB At high latitudes, changes in soil moisture could alter soil temperatures independently of air temperature changes by interacting with the snow thermal rectifier. The authors investigated this mechanism with model experiments in the Community Land Model 4 (CLM4) with prescribed atmospheric forcing and vegetation state. Under equilibriumhistorical conditions, increasing CO2 concentrations experienced by plants from 285 to 857 ppm caused local increases in soil water-filled pore space of 0.1-0.2 in some regions throughout the globe. In permafrost regions that experienced this moistening, vertical-and annual-mean soil temperatures increased by up to 3 degrees C (0.27 degrees C averaged over all permafrost areas). A similar pattern of moistening and consequent warming occurred in simulations with prescribed June-September (JJAS) rainfall increases of 25% over historical values, a level of increase commensurate with projected future rainfall increases. There was a strong sensitivity of the moistening responses to the baseline hydrological state. Experiments with perturbed physics confirmed that the simulated warming in permafrost soils was caused by increases in the soil latent heat of fusion per unit volume and in the soil thermal conductivity due to the increased moisture. In transient Representative Concentration Pathway 8.5 (RCP8.5) scenario experiments, soil warming due to increased CO2 or JJAS rainfall was smaller in magnitude and spatial extent than in the equilibrium experiments. Active-layer deepening associated with soil moisture changes occurred over less than 8% of the current permafrost area because increased heat of fusion and soil thermal conductivity had compensating effects on active-layer depth. Ongoing modeling challenges make these results tentative.
C1 [Subin, Zachary M.] Princeton Environm Inst, Princeton, NJ 08544 USA.
   [Subin, Zachary M.; Koven, Charles D.; Riley, William J.; Torn, Margaret S.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
   [Lawrence, David M.; Swenson, Sean C.] Natl Ctr Atmospher Res, Boulder, CO 80307 USA.
RP Subin, ZM (reprint author), Princeton Environm Inst, Guyot Hall,Rm 129, Princeton, NJ 08544 USA.
EM subin@post.harvard.edu
RI Lawrence, David/C-4026-2011; Subin, Zachary/K-5168-2012; Riley,
   William/D-3345-2015; Torn, Margaret/D-2305-2015; Koven,
   Charles/N-8888-2014
OI Lawrence, David/0000-0002-2968-3023; Subin, Zachary/0000-0002-9257-9288;
   Riley, William/0000-0002-4615-2304; Koven, Charles/0000-0002-3367-0065
FU Office of Science, Office of Biological and Environmental Research,
   Climate and Environmental Science Division, U.S. Department of Energy
   [DE-AC02-05CH11231]
FX The authors would like to recognize Joe Melton (University of Victoria)
   and the other members of the WETland and Wetland CH<INF>4</INF>
   Inter-comparison of Models Project (WETCHIMP); experiments conducted by
   the authors for this project inspired the research detailed here.
   William Collins (Lawrence Berkeley Lab) contributed comments on a draft
   manuscript. Two anonymous reviewers provided comments that improved the
   manuscript. This work used resources of the National Energy Research
   Scientific Computing Center (NERSC) and was supported by the Director of
   the Office of Science, Office of Biological and Environmental Research,
   Climate and Environmental Science Division, U.S. Department of Energy,
   under Contract DE-AC02-05CH11231 to the Berkeley Lab.
NR 62
TC 10
Z9 10
U1 10
U2 92
PU AMER METEOROLOGICAL SOC
PI BOSTON
PA 45 BEACON ST, BOSTON, MA 02108-3693 USA
SN 0894-8755
J9 J CLIMATE
JI J. Clim.
PD MAY
PY 2013
VL 26
IS 10
BP 3139
EP 3158
DI 10.1175/JCLI-D-12-00305.1
PG 20
WC Meteorology & Atmospheric Sciences
SC Meteorology & Atmospheric Sciences
GA 142DG
UT WOS:000318775900009
ER

PT J
AU Yuan, WH
   Yu, RC
   Zhang, MH
   Lin, WY
   Li, J
   Fu, YF
AF Yuan, Weihua
   Yu, Rucong
   Zhang, Minghua
   Lin, Wuyin
   Li, Jian
   Fu, Yunfei
TI Diurnal Cycle of Summer Precipitation over Subtropical East Asia in CAM5
SO JOURNAL OF CLIMATE
LA English
DT Article
ID COMMUNITY ATMOSPHERE MODEL; GENERAL-CIRCULATION MODEL; STOCHASTIC MIXING
   MODEL; CLIMATE SYSTEM MODEL; SINGLE-COLUMN MODEL; KM-MESH GCM;
   WARM-SEASON; UNITED-STATES; PROFILING ALGORITHM; CUMULUS CONVECTION
AB The simulations of summertime diurnal cycle of precipitation and low-level winds by the Community Atmosphere Model, version 5, are evaluated over subtropical East Asia. The evaluation reveals the physical cause of the observed diurnal rainfall variation in East Asia and points to the source of model strengths and weaknesses. Two model versions with horizontal resolutions of 2.8 degrees and 0.5 degrees are used.
   The models can reproduce the diurnal phase of large-scale winds over East Asia, with an enhanced low-level southwesterly in early morning. Correspondingly, models successfully simulated the diurnal variation of stratiform rainfall with a maximum in early morning. However, the simulated convective rainfall occurs at local noontime, earlier than observations and with larger amplitude (normalized by the daily mean). As a result, models simulated a weaker diurnal cycle in total rainfall over the western plain of China due to an out-of-phase cancellation between convective and stratiform rainfalls and a noontime maximum of total rainfall over the eastern plain of China. Over the East China Sea, models simulated the early-morning maximum of convective precipitation and, together with the correct phase of the stratiform rainfall, they captured the diurnal cycle of total precipitation. The superposition of the stratiform and convective rainfalls also explains the observed diurnal cycle in total rainfall in East Asia. Relative to the coarse-resolution model, the high-resolution model simulated slight improvement in diurnal rainfall amplitudes, due to the larger amplitude of stratiform rainfall. The two models, however, suffer from the same major biases in rainfall diurnal cycles due to the convection parameterization.
C1 [Yuan, Weihua] Chinese Acad Sci, Inst Atmospher Phys, LASG, Beijing, Peoples R China.
   [Yu, Rucong] China Meteorol Adm, Chinese Acad Meteorol Sci, LaSW, Beijing, Peoples R China.
   [Zhang, Minghua] SUNY Stony Brook, Inst Terr & Planetary Atmospheres, Sch Marine & Atmospher Sci, Stony Brook, NY 11794 USA.
   [Lin, Wuyin] Brookhaven Natl Lab, Brookhaven, NY USA.
   [Li, Jian] China Meteorol Adm, Chinese Acad Meteorol Sci, Beijing, Peoples R China.
   [Fu, Yunfei] Univ Sci & Technol China, Sch Earth & Space Sci, Lab Satellite Remote Sensing & Climate Environm, Hefei 230026, Peoples R China.
RP Yu, RC (reprint author), China Meteorol Adm, Natl Climate Ctr, 46 Zhongguancun Nandajie, Beijing 100081, Peoples R China.
EM yrc@lasg.iap.ac.cn
FU Major National Basic Research Program of China (973 Program) on Global
   Change [2010CB951902, 2010CB951802]; National Natural Science Foundation
   of China [41205053, 41221064]; National Science Foundation; Office of
   Sciences of the Department of Energy; NASA; Office of Sciences of the
   U.S. Department of Energy through the FASTER project
FX This research is supported by the Major National Basic Research Program
   of China (973 Program) on Global Change under Grants 2010CB951902 and
   2010CB951802 and the National Natural Science Foundation of China under
   Grants 41205053 and 41221064. Additional supported is provided by the
   National Science Foundation, the Office of Sciences of the Department of
   Energy, and NASA to Stony Brook University. Wuyin Lin is supported by
   the Office of Sciences of the U.S. Department of Energy through the
   FASTER project to Brookhaven National Laboratory.
NR 57
TC 14
Z9 16
U1 1
U2 13
PU AMER METEOROLOGICAL SOC
PI BOSTON
PA 45 BEACON ST, BOSTON, MA 02108-3693 USA
SN 0894-8755
J9 J CLIMATE
JI J. Clim.
PD MAY
PY 2013
VL 26
IS 10
BP 3159
EP 3172
DI 10.1175/JCLI-D-12-00119.1
PG 14
WC Meteorology & Atmospheric Sciences
SC Meteorology & Atmospheric Sciences
GA 142DG
UT WOS:000318775900010
ER

PT J
AU Williams, KD
   Bodas-Salcedo, A
   Deque, M
   Fermepin, S
   Medeiros, B
   Watanabe, M
   Jakob, C
   Klein, SA
   Senior, CA
   Williamson, DL
AF Williams, K. D.
   Bodas-Salcedo, A.
   Deque, M.
   Fermepin, S.
   Medeiros, B.
   Watanabe, M.
   Jakob, C.
   Klein, S. A.
   Senior, C. A.
   Williamson, D. L.
TI The Transpose-AMIP II Experiment and Its Application to the
   Understanding of Southern Ocean Cloud Biases in Climate Models
SO JOURNAL OF CLIMATE
LA English
DT Article
ID COMMUNITY-ATMOSPHERE-MODEL; OFFICE UNIFIED MODEL; WEATHER PREDICTION;
   SYSTEMATIC-ERRORS; RADIATION BUDGET; SIMULATION; SURFACE; ISCCP; TOP
AB The Transpose-Atmospheric Model Intercomparison Project (AMIP) is an international model intercomparison project in which climate models are run in "weather forecast mode." The Transpose-AMIP II experiment is run alongside phase 5 of the Coupled Model Intercomparison Project (CMIP5) and allows processes operating in climate models to be evaluated, and the origin of climatological biases to be explored, by examining the evolution of the model from a state in which the large-scale dynamics, temperature, and humidity structures are constrained through use of common analyses.
   The Transpose-AMIP II experimental design is presented. The project requests participants to submit a comprehensive set of diagnostics to enable detailed investigation of the models to be performed. An example of the type of analysis that may be undertaken using these diagnostics is illustrated through a study of the development of cloud biases over the Southern Ocean, a region that is problematic for many models. Several models share a climatological bias for too little reflected shortwave radiation from cloud across the region. This is found to mainly occur behind cold fronts and/or on the leading side of transient ridges and to be associated with more stable lower-tropospheric profiles. Investigation of a case study that is typical of the bias and associated meteorological conditions reveals the models to typically simulate cloud that is too optically and physically thin with an inversion that is too low. The evolution of the models within the first few hours suggests that these conditions are particularly sensitive and a positive feedback can develop between the thinning of the cloud layer and boundary layer structure.
C1 [Williams, K. D.; Bodas-Salcedo, A.; Senior, C. A.] Met Off, Exeter EX1 3PB, Devon, England.
   [Deque, M.] CNRS GAME, Meteofrance CNRM, Toulouse, France.
   [Fermepin, S.] Inst Pierre Simon Laplace, Paris, France.
   [Medeiros, B.; Williamson, D. L.] Natl Ctr Atmospher Res, Boulder, CO 80307 USA.
   [Watanabe, M.] Univ Tokyo, Tokyo, Japan.
   [Jakob, C.] Monash Univ, Melbourne, Vic 3004, Australia.
   [Klein, S. A.] Lawrence Livermore Natl Lab, Livermore, CA USA.
RP Williams, KD (reprint author), Met Off, FitzRoy Rd, Exeter EX1 3PB, Devon, England.
EM keith.williams@metoffice.gov.uk
RI Medeiros, Brian/A-3695-2009; Klein, Stephen/H-4337-2016; Jakob,
   Christian/A-1082-2010
OI Medeiros, Brian/0000-0003-2188-4784; Klein, Stephen/0000-0002-5476-858X;
   Jakob, Christian/0000-0002-5012-3207
FU Joint DECC/Defra Met Office Hadley Centre Climate Programme [GA01101];
   Office of Science (BER), U.S. Department of Energy [DE-FC02-97ER62402];
   Regional and Global Climate Modeling and Atmospheric System Research
   Programs of the Office of Science at the U.S. Department of Energy;
   Lawrence Livermore National Laboratory [DE-AC52-07NA27344]
FX This work was supported by the Joint DECC/Defra Met Office Hadley Centre
   Climate Programme (GA01101).; The contributions of B. Medeiros and D.
   Williamson to this work were supported by the Office of Science (BER),
   U.S. Department of Energy, Cooperative Agreement DE-FC02-97ER62402.; The
   contribution of S.A. Klein to this work was supported by the Regional
   and Global Climate Modeling and Atmospheric System Research Programs of
   the Office of Science at the U.S. Department of Energy and was performed
   under the auspices of the U.S. Department of Energy by Lawrence
   Livermore National Laboratory under Contract DE-AC52-07NA27344.
NR 36
TC 50
Z9 50
U1 1
U2 33
PU AMER METEOROLOGICAL SOC
PI BOSTON
PA 45 BEACON ST, BOSTON, MA 02108-3693 USA
SN 0894-8755
EI 1520-0442
J9 J CLIMATE
JI J. Clim.
PD MAY
PY 2013
VL 26
IS 10
BP 3258
EP 3274
DI 10.1175/JCLI-D-12-00429.1
PG 17
WC Meteorology & Atmospheric Sciences
SC Meteorology & Atmospheric Sciences
GA 142DG
UT WOS:000318775900016
ER

PT J
AU Deng, LP
   McFarlane, SA
   Flaherty, JE
AF Deng, Liping
   McFarlane, Sally A.
   Flaherty, Julia E.
TI Characteristics Associated with the Madden-Julian Oscillation at Manus
   Island
SO JOURNAL OF CLIMATE
LA English
DT Article
ID OUTGOING LONGWAVE RADIATION; INTRASEASONAL OSCILLATIONS; TRIMODAL
   CHARACTERISTICS; TROPICAL ATMOSPHERE; WESTERN PACIFIC; LIFE-CYCLE; MJO;
   VARIABILITY; MODEL; SENSITIVITY
AB Ground-based high temporal and vertical resolution datasets from observations during 2002-07 at the Atmospheric Radiation Measurement (ARM) tropical western Pacific (TWP) site on Manus Island are used to examine the characteristics of clouds and rainfall associated with the active phase of the Madden-Julian oscillation (MJO) passing over Manus. A composite MJO event at Manus is developed based on the NOAA MJO index 4 and precipitation using 13 events. The cloud characteristics associated with the active phase of the MJO at Manus show a two-phase structure as the wave passes over Manus. During the development phase, congestus plays an important role, and the enhanced convection is located between surface westerly and easterly wind anomalies (type-I structure). During the mature phase, deep convection is the dominant cloud type, and the enhanced convection is collocated with the westerly wind anomalies (type-II structure). Consistent with this two-phase structure, the heavy rainfall frequency also shows a two-peak structure during the MJO disturbance, while light rainfall does not show a clear relation to the intraseasonal disturbance associated with the MJO. In addition, a positive relationship between the precipitation rate and precipitable water vapor exists at Manus, and the atmospheric column is less moist after the passing of the MJO convection center than before.
C1 [Deng, Liping; McFarlane, Sally A.; Flaherty, Julia E.] Pacific NW Natl Lab, Richland, WA 99352 USA.
RP Deng, LP (reprint author), Pacific NW Natl Lab, POB 999,MSIN K9-24, Richland, WA 99352 USA.
EM liping.deng@pnnl.gov
FU Atmospheric System Research (ASR) Program in the U.S. Department of
   Energy's Office of Biological and Environmental Research; U.S.
   Department of Energy [DE-AC06-76RLO1830]
FX We thank Dr. Jennifer Comstock for producing the radar/lidar datasets
   used in this analysis and Dr. Jason Hou for valuable suggestions
   regarding the composite analysis. Comments on the manuscript by Dr.
   William Gustafson, Dr. Samson Hagos, and two anonymous reviewers are
   greatly appreciated. Finally, we thank the ARM TWP operations team for
   their continued efforts to produce high quality data from the ARM TWP
   sites. This work was supported by the Atmospheric System Research (ASR)
   Program in the U.S. Department of Energy's Office of Biological and
   Environmental Research. Pacific Northwest National Laboratory is
   operated by Battelle for the U.S. Department of Energy under Contract
   DE-AC06-76RLO1830.
NR 47
TC 4
Z9 4
U1 1
U2 10
PU AMER METEOROLOGICAL SOC
PI BOSTON
PA 45 BEACON ST, BOSTON, MA 02108-3693 USA
SN 0894-8755
J9 J CLIMATE
JI J. Clim.
PD MAY
PY 2013
VL 26
IS 10
BP 3342
EP 3356
DI 10.1175/JCLI-D-12-00312.1
PG 15
WC Meteorology & Atmospheric Sciences
SC Meteorology & Atmospheric Sciences
GA 142DG
UT WOS:000318775900021
ER

PT J
AU Shoemaker, MA
   Hokamoto, S
AF Shoemaker, Michael A.
   Hokamoto, Shinji
TI Comparison of Integrated and Nonintegrated Wide-Field Optic Flow for
   Vehicle Navigation
SO JOURNAL OF GUIDANCE CONTROL AND DYNAMICS
LA English
DT Article
AB Recent studies of vision-based navigation and guidance for robotic vehicles have been inspired by the biological systems found in flying insects. The wide-field integration of optic flow is one pre-existing method, in which the sensed optic flow is integrated along with sensitivity functions to mimic the action of directionally sensitive cells observed in some insects' visual systems. This study re-examines the wide-field integration method and reformulates the problem from a summation rather than an integral. This reformulation allows the wide-field integration measurement outputs to be directly compared with nonintegrated optic flow measurements. The method using nonintegrated optic flow measurements is shown to have some practical advantages, such as eliminating the need to define input sensitivity functions and having a measurement Jacobian that is easier to derive analytically. Also, the state estimates obtained with the nonintegrated method are proven to have minimum variance compared with those from the wide-field integration method. Numerical simulations of each method are shown for a vehicle maintaining level flight at constant altitude over a flat terrain.
C1 [Shoemaker, Michael A.] Kyushu Univ, Dept Aeronaut & Astronaut, Fukuoka 8190395, Japan.
   [Hokamoto, Shinji] Kyushu Univ, Dept Aeronaut & Astronaut, Nishi Ku, Fukuoka 8190395, Japan.
RP Shoemaker, MA (reprint author), Los Alamos Natl Lab, Space Sci & Applicat ISR 1, POB 1663,Mail Stop D466, Los Alamos, NM 87545 USA.
FU Japan Society for the Promotion of Science
FX The first author received funding under a Research Fellowship for Young
   Scientists from the Japan Society for the Promotion of Science while at
   Kyushu University, Fukuoka, Japan. We thank Jozef C. van der Ha, Toshiya
   Hanada, and Nobuhiro Okada for reviewing an earlier version of this
   manuscript, which appeared in the first author's Ph.D. dissertation. We
   also thank the two anonymous reviewers for their insightful comments.
NR 25
TC 1
Z9 1
U1 2
U2 10
PU AMER INST AERONAUTICS  ASTRONAUTICS
PI RESTON
PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091-4344 USA
SN 0731-5090
EI 1533-3884
J9 J GUID CONTROL DYNAM
JI J. Guid. Control Dyn.
PD MAY-JUN
PY 2013
VL 36
IS 3
BP 710
EP 720
DI 10.2514/1.59084
PG 11
WC Engineering, Aerospace; Instruments & Instrumentation
SC Engineering; Instruments & Instrumentation
GA 136RZ
UT WOS:000318382400007
ER

PT J
AU Golkar, F
   Kramer, MJ
   Zhang, Y
   Skomski, R
   Sellmyer, DJ
   Shield, JE
AF Golkar, Farhad
   Kramer, M. J.
   Zhang, Y.
   Skomski, R.
   Sellmyer, D. J.
   Shield, J. E.
TI Solubility extension and phase formation in gas-condensed Co-W
   nanoclusters
SO JOURNAL OF NANOPARTICLE RESEARCH
LA English
DT Article
DE Nanomagnetics; Cobalt alloys; Tungsten alloys; Metal clusters;
   Nanofabrication; Nanostructured materials; Sputter deposition; Coercive
   force; Transmission electron microscopy; X-ray diffraction
ID NANOPARTICLES; NANOALLOYS; DIAGRAMS
AB Co-W alloy clusters with extended solubility of W in hcp Co were produced by inert-gas condensation. The structural state of the as-deposited Co-W clusters was found to be critically dependent on processing parameters such as the cooling scheme and sputtering power. For the water-cooled clusters, the mean size and percent crystalline were strongly dependent on sputtering power, while the percent crystalline of the liquid nitrogen-cooled clusters was not as affected by the sputtering power. At low sputtering powers, the water-cooled clusters were predominantly amorphous, but became increasingly more crystalline as the sputtering power increased. The predominant crystalline phase was hcp Co(W), but high-resolution transmission electron microscopy revealed that very small and very large clusters contained fcc and Co3W structures, respectively. For liquid nitrogen cooling the clusters were predominantly amorphous regardless of sputtering power, although at the highest sputtering power a small percentage of the clusters were crystalline. The magnetic properties were dependent on cooling schemes, sputtering power, and temperature, with the highest coercivity of 893 Oe obtained at 10 K for water-cooled clusters sputtered at 150 W. The magnetocrystalline anisotropy of the water-cooled sample increased with increasing sputtering power, with the highest anisotropy of 3.9 x 10(6) ergs/cm(3) recorded for clusters sputtered at 150 W. For liquid nitrogen-cooled samples, the anisotropy was approximately constant for all sputtering powers.
C1 [Golkar, Farhad; Shield, J. E.] Univ Nebraska, Lincoln, NE 68588 USA.
   [Kramer, M. J.; Zhang, Y.] US DOE, Ames Lab, Ames, IA 50011 USA.
   [Skomski, R.; Sellmyer, D. J.] Univ Nebraska, Dept Phys & Astron, Lincoln, NE 68588 USA.
   [Skomski, R.; Sellmyer, D. J.; Shield, J. E.] Univ Nebraska, Nebraska Ctr Mat & Nanosci, Lincoln, NE 68588 USA.
RP Golkar, F (reprint author), Univ Nebraska, Lincoln, NE 68588 USA.
EM farhad518@huskers.unl.edu
FU Department of Energy-Energy Efficiency and Renewable Energy, Vehicles
   Technology Office, PEEM program [DE-AC02-07CH11358];  [SC-10-343]
FX This work was supported by the Department of Energy-Energy Efficiency
   and Renewable Energy, Vehicles Technology Office, PEEM program, under
   Contract No. DE-AC02-07CH11358 for the operation of Ames Laboratory
   (USDOE) and sub-contract no. SC-10-343 to the University of
   Nebraska-Lincoln.
NR 21
TC 5
Z9 5
U1 1
U2 20
PU SPRINGER
PI DORDRECHT
PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS
SN 1388-0764
J9 J NANOPART RES
JI J. Nanopart. Res.
PD MAY
PY 2013
VL 15
IS 5
AR 1638
DI 10.1007/s11051-013-1638-x
PG 10
WC Chemistry, Multidisciplinary; Nanoscience & Nanotechnology; Materials
   Science, Multidisciplinary
SC Chemistry; Science & Technology - Other Topics; Materials Science
GA 139BC
UT WOS:000318555400043
ER

PT J
AU Kundu, S
   Nelson, AJ
   McCall, SK
   van Buuren, T
   Liang, H
AF Kundu, Subrata
   Nelson, A. J.
   McCall, S. K.
   van Buuren, Tony
   Liang, Hong
TI Shape-influenced magnetic properties of CoO nanoparticles
SO JOURNAL OF NANOPARTICLE RESEARCH
LA English
DT Article
DE Magnetic nanoparticles; CoO nanostructures; Paramagnetic; Ferromagnetic;
   Electronic structures
ID COBALT OXIDE; MICROWAVE IRRADIATION; CONTROLLED GROWTH;
   AQUEOUS-SOLUTION; DNA SCAFFOLDS; WURTZITE COO; NANOCRYSTALS; GOLD;
   NANORODS; PHASE
AB Using a wet chemical approach, CoO nanospheres, nanorings, nanoflowers, and nanowires of different sizes were generated. Among those, nanorings show ferromagnetic behavior below 6 K while the nanospheres remain paramagnetic. X-ray photoelectron spectroscopy for Co 2p, 3p, and 3s core-levels indicates the paramagnetic high-spin Co(II) electronic configuration. This finding reveals the optical, electronic, and magnetic behavior of CoO nanoparticles (NPs) that opens new opportunities for future applications as catalysts precursors for making pigments, lithium-ion battery materials, or as solid-state sensors as anisotropy source for magnetic recording.
C1 [Kundu, Subrata; Liang, Hong] Texas A&M Univ, College Stn, TX 77843 USA.
   [Kundu, Subrata] CSIR Cent Electrochem Res Inst CSIR CECRI, Electrochem Mat Sci ECMS Div, Karaikkudi 630006, Tamil Nadu, India.
   [Nelson, A. J.; McCall, S. K.; van Buuren, Tony] Lawrence Livermore Natl Lab, Phys & Life Sci Directorate, Condensed Matter & Mat Div, Livermore, CA 94550 USA.
RP Kundu, S (reprint author), Texas A&M Univ, College Stn, TX 77843 USA.
EM skundu@cecri.res.in; hliang@tamu.edu
RI McCall, Scott/G-1733-2014
OI McCall, Scott/0000-0002-7979-4944
FU Department of Mechanical Engineering, Texas AM University; Texas
   Engineering Experiments Station; US Department of Energy by Lawrence
   Livermore National Laboratory [DE-AC52-07NA27344];  [NSF-0506082]
FX This research was in part sponsored by the NSF-0506082; the Department
   of Mechanical Engineering, Texas A&M University; and the Texas
   Engineering Experiments Station. Supports for TEM and EDS by Dr. Zhiping
   Luo at the Microscopy Imaging Center (MIC), Texas A&M University were
   greatly appreciated. This study performed under the auspices of the US
   Department of Energy by Lawrence Livermore National Laboratory under
   Contract DE-AC52-07NA27344.
NR 47
TC 3
Z9 3
U1 7
U2 80
PU SPRINGER
PI DORDRECHT
PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS
SN 1388-0764
J9 J NANOPART RES
JI J. Nanopart. Res.
PD MAY
PY 2013
VL 15
IS 5
AR 1587
DI 10.1007/s11051-013-1587-4
PG 13
WC Chemistry, Multidisciplinary; Nanoscience & Nanotechnology; Materials
   Science, Multidisciplinary
SC Chemistry; Science & Technology - Other Topics; Materials Science
GA 139BC
UT WOS:000318555400004
ER

PT J
AU Kim, YS
   Hofman, GL
   Cheon, JS
AF Kim, Yeon Soo
   Hofman, G. L.
   Cheon, J. S.
TI Recrystallization and fission-gas-bubble swelling of U-Mo fuel
SO JOURNAL OF NUCLEAR MATERIALS
LA English
DT Article
ID IRRADIATION-INDUCED RECRYSTALLIZATION; BURNUP UO2 FUEL; DISPERSION FUEL;
   NUCLEAR-FUELS; MICROSTRUCTURE; BEHAVIOR; PELLETS; MODEL
AB At high burnup, U-Mo fuel exhibits some form of recrystallization, by which fuel grains are subdivided. The effect of grain subdivision is to effectively enhance fission gas bubble (FGB) swelling due to increased grain boundaries. Inter-granular FGB swelling, i.e., FGB formation and growth at the grain boundaries, is much larger than the intra-granular FGB swelling. Recrystallized fuel volume fractions of U-Mo fuels irradiated to fission densities reaching 5.7 x 10(21) f/cm(3) were measured. Analytical expressions of recrystallization kinetics of U-Mo fuel during irradiation have been developed through the usage of the Avrami equation, a phenomenological equation which is also used to describe similar typical transformation reactions, such as new phase formation. In this work, we present a novel FGB swelling model of U-Mo fuel that is expressed in terms of Mo content, extent of cold work (fuel powder fabrication method), and fission density. (c) 2013 Elsevier B.V. All rights reserved.
C1 [Kim, Yeon Soo; Hofman, G. L.] Argonne Natl Lab, Argonne, IL 60439 USA.
   [Cheon, J. S.] Korea Atom Energy Res Inst, Taejon 305353, South Korea.
RP Kim, YS (reprint author), Argonne Natl Lab, 9700 S Cass Ave, Argonne, IL 60439 USA.
EM yskim@anl.gov
FU U.S. Department of Energy, Office of Global Threat Reduction [NA-21];
   National Nuclear Security Administration [DE-AC-02-06CH11357]
FX This paper contains information gathered from five reduced-size plate
   tests (RERTR-1, -2, -3, -4, and -5) for dispersion plate samples
   irradiated at the ATR. The contributors for these irradiation tests and
   post irradiation examinations include Drs. S.L. Hayes and M. Meyer from
   INL for the irradiation test designs, Mr. T. Wiencek from ANL for the
   test plate fabrication, and late Dr. R. Strain from ANL for PIEs. Some
   of the SEM images shown in this paper have been presented previously.
   The operations staff at ATR is also acknowledged for these irradiation
   tests. The physics data available by Dr. G. Chang are also appreciated.
   The authors are also grateful to Dr. J.M. Park of KAERI, Korea, for
   allowing the use of the image in Fig. 1. Powder provisions by KAERI for
   the atomized powder and by AECL for the ground powder are also
   appreciated. Discussion with Dr. J. Rest is greatly acknowledged.
   Comments by Ms. S.H. Kim were also helpful. This work was supported by
   the U.S. Department of Energy, Office of Global Threat Reduction
   (NA-21), National Nuclear Security Administration, under Contract No.
   DE-AC-02-06CH11357 between UChicago Argonne, LLC and the Department of
   Energy.
NR 26
TC 19
Z9 19
U1 0
U2 11
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0022-3115
J9 J NUCL MATER
JI J. Nucl. Mater.
PD MAY
PY 2013
VL 436
IS 1-3
BP 14
EP 22
DI 10.1016/j.jnucmat.2013.01.291
PG 9
WC Materials Science, Multidisciplinary; Nuclear Science & Technology
SC Materials Science; Nuclear Science & Technology
GA 136VL
UT WOS:000318391400003
ER

PT J
AU Kirchhofer, R
   Teague, MC
   Gorman, BP
AF Kirchhofer, Rita
   Teague, Melissa C.
   Gorman, Brian P.
TI Thermal effects on mass and spatial resolution during laser pulse atom
   probe tomography of cerium oxide
SO JOURNAL OF NUCLEAR MATERIALS
LA English
DT Article
ID FIELD EVAPORATION; FUEL DEVELOPMENT; CEO2
AB Cerium oxide (CeO2) is an ideal surrogate material for trans-uranic elements and fission products found in nuclear fuels due to similarities in their thermal properties; therefore, cerium oxide was used to determine the best run condition for atom probe tomography (APT) of nuclear fuels. Laser-assisted APT is a technique that allows for spatial resolution in the nm scale and isotopic/elemental chemical identification. A systematic study of the impact of laser pulse energy and specimen base temperature on the mass resolution, measurement of stoichiometry, multiple detector hits, and evaporation mechanisms are reported in this paper. It was demonstrated that using laser-assisted APT stoichiometric field evaporation of cerium oxide was achieved at 1 pJ laser pulse energy and 20 K specimen base temperature. (c) 2013 Elsevier B.V. All rights reserved.
C1 [Kirchhofer, Rita; Gorman, Brian P.] Colorado Sch Mines, Colorado Ctr Adv Ceram Met & Mat Engn, Golden, CO 80401 USA.
   [Teague, Melissa C.] Idaho Natl Lab, Idaho Falls, ID 83415 USA.
RP Kirchhofer, R (reprint author), Colorado Sch Mines, Colorado Ctr Adv Ceram Met & Mat Engn, Golden, CO 80401 USA.
EM rkirchho@mines.edu
FU Idaho National Laboratory; Advanced Test Reactor National Scientific
   User Facility (ATR NSUF); NSF [1040456]
FX This work was supported by Idaho National Laboratory and the Advanced
   Test Reactor National Scientific User Facility (ATR NSUF). Additional
   funding was obtained from NSF award number 1040456. Special thanks to
   Dr. David R. Diercks for helpful discussion and guidance on data
   analysis.
NR 21
TC 18
Z9 18
U1 1
U2 25
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0022-3115
J9 J NUCL MATER
JI J. Nucl. Mater.
PD MAY
PY 2013
VL 436
IS 1-3
BP 23
EP 28
DI 10.1016/j.jnucmat.2012.12.052
PG 6
WC Materials Science, Multidisciplinary; Nuclear Science & Technology
SC Materials Science; Nuclear Science & Technology
GA 136VL
UT WOS:000318391400004
ER

PT J
AU McKeown, JT
   Irukuvarghula, S
   Ahn, S
   Wall, MA
   Hsiung, LL
   McDeavitt, S
   Turchi, PEA
AF McKeown, J. T.
   Irukuvarghula, S.
   Ahn, S.
   Wall, M. A.
   Hsiung, L. L.
   McDeavitt, S.
   Turchi, P. E. A.
TI Coexistence of the alpha and delta phases in an as-cast uranium-rich
   U-Zr alloy
SO JOURNAL OF NUCLEAR MATERIALS
LA English
DT Article
ID INERT MATRIX FUEL; ZIRCONIUM; PLUTONIUM; SYSTEM; REACTORS;
   TRANSFORMATIONS; INTERDIFFUSION; STABILITY
AB Uranium-zirconium alloys are being investigated for use in ultrahigh burn-up, metallic inert matrix nuclear fuels. Characterization of these alloys in the transmission electron microscope with spatial resolutions that are inaccessible by other techniques shows that the orthorhombic alpha and hexagonal, intermetallic delta phases coexist in an as-cast uranium-rich U-10 wt.% Zr alloy. Analyses reveal the chemistries of and crystallographic relationship between the two phases. (c) 2013 Elsevier B.V. All rights reserved.
C1 [McKeown, J. T.; Wall, M. A.; Hsiung, L. L.; Turchi, P. E. A.] Lawrence Livermore Natl Lab, Condensed Matter & Mat Div, Livermore, CA 94550 USA.
   [Irukuvarghula, S.; Ahn, S.; McDeavitt, S.] Texas A&M Univ, Dept Nucl Engn, College Stn, TX 77843 USA.
RP McKeown, JT (reprint author), Lawrence Livermore Natl Lab, Condensed Matter & Mat Div, Livermore, CA 94550 USA.
EM mckeown3@llnl.gov
FU U.S. Department of Energy by Lawrence Livermore National Laboratory
   [DE-AC52-07NA2734]; Laboratory Directed Research and Development Program
   at LLNL [12-SI-008]
FX This work was performed under the auspices of the U.S. Department of
   Energy by Lawrence Livermore National Laboratory under Contract
   DE-AC52-07NA2734. Work was funded by the Laboratory Directed Research
   and Development Program at LLNL under project tracking code 12-SI-008.
NR 47
TC 8
Z9 8
U1 0
U2 22
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0022-3115
J9 J NUCL MATER
JI J. Nucl. Mater.
PD MAY
PY 2013
VL 436
IS 1-3
BP 100
EP 104
DI 10.1016/j.jnucmat.2013.01.313
PG 5
WC Materials Science, Multidisciplinary; Nuclear Science & Technology
SC Materials Science; Nuclear Science & Technology
GA 136VL
UT WOS:000318391400014
ER

PT J
AU Field, RD
   Thoma, DJ
AF Field, R. D.
   Thoma, D. J.
TI Crystallographic and kinetic origins of acicular and banded
   microstructures in U-Nb alloys
SO JOURNAL OF NUCLEAR MATERIALS
LA English
DT Article
ID METALLOGRAPHIC PREPARATION TECHNIQUES; SHAPE-MEMORY ALLOYS;
   URANIUM-NIOBIUM; DEFORMATION MECHANISMS; METASTABLE PHASES; GAMMA;
   SYSTEM; TRANSFORMATIONS; TEMPERATURE; BEHAVIOR
AB The transition from the acicular to banded structure in dilute U-Nb alloys (similar to 5 at.%Nb) has been investigated. The acicular morphology consists of large, single orientation laths with high densities of dislocations and deformation twins, while the banded morphology is comprised of fine transformation twins, often with complex, multiple twin orientation relationships. Detailed Transmission Electron Microscopy (TEM) studies of the crystallographic relationships and deformation structures of these two microstructures are presented. In addition, controlled thermal histories and Continuous Cooling Transformation (CCT) curves have been evaluated to characterize the transformation pathways associated with the change in morphology. While the change from acicular to banded morphology is associated with increasing Nb concentrations, the competition between a temperature invariant reaction (at higher cooling rates) and a thermally activated transformation is investigated. (c) 2013 Elsevier B.V. All rights reserved.
C1 [Field, R. D.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
   [Field, R. D.; Thoma, D. J.] Los Alamos Natl Lab, Mat Design Inst, Los Alamos, NM 87545 USA.
RP Field, RD (reprint author), Los Alamos Natl Lab, MST 6,Mail Stop G770,POB 1663, Los Alamos, NM 87545 USA.
EM rdfield@lanl.gov
FU DOE [DE-AC52-06NA25396]
FX The authors gratefully acknowledge Larry Hults for alloy preparation,
   Larry Dauelsberg for dilatometry, Pallas Papin for preparation of TEM
   foils, and Ann Kelly for optical metallography. Stimulating discussions
   with Drs. Ken Eckelmeyer, John Hirth, Alan Crocker, and Robert
   Hackenberg are also greatly appreciated. We thank Alan Patterson and
   Paul Dunn for their continued support of research in U metallurgy. This
   work was supported under DOE Contract No. DE-AC52-06NA25396.
NR 35
TC 5
Z9 5
U1 4
U2 28
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0022-3115
EI 1873-4820
J9 J NUCL MATER
JI J. Nucl. Mater.
PD MAY
PY 2013
VL 436
IS 1-3
BP 105
EP 117
DI 10.1016/j.jnucmat.2013.01.309
PG 13
WC Materials Science, Multidisciplinary; Nuclear Science & Technology
SC Materials Science; Nuclear Science & Technology
GA 136VL
UT WOS:000318391400015
ER

PT J
AU Piehowski, PD
   Petyuk, VA
   Orton, DJ
   Xie, F
   Moore, RJ
   Ramirez-Restrepo, M
   Engel, A
   Lieberman, AP
   Albin, RL
   Camp, DG
   Smith, RD
   Myers, AJ
AF Piehowski, Paul D.
   Petyuk, Vladislav A.
   Orton, Daniel J.
   Xie, Fang
   Moore, Ronald J.
   Ramirez-Restrepo, Manuel
   Engel, Anzhelika
   Lieberman, Andrew P.
   Albin, Roger L.
   Camp, David G.
   Smith, Richard D.
   Myers, Amanda J.
TI Sources of Technical Variability in Quantitative LC-MS Proteomics: Human
   Brain Tissue Sample Analysis
SO JOURNAL OF PROTEOME RESEARCH
LA English
DT Article
DE label-free quantification; technical variation; sample preparation;
   reproducibility; study design; tissue analysis
ID SPECTROMETRY-BASED PROTEOMICS; COMPLEX PROTEIN MIXTURES; MULTILOCUS
   GENOTYPE DATA; MASS-SPECTROMETRY; PEPTIDE IDENTIFICATION; CELL-CULTURE;
   AMINO-ACIDS; LIQUID-CHROMATOGRAPHY; 2-DIMENSIONAL ELECTROPHORESIS;
   ZWITTERIONIC DETERGENTS
AB To design a robust quantitative proteomics study, an understanding of both the inherent heterogeneity of the biological samples being studied as well as the technical variability of the proteomics methods and platform is needed. Additionally, accurately identifying the technical steps associated with the largest variability would provide valuable information for the improvement and design of future processing pipelines. We present an experimental strategy that allows for a detailed examination of the variability of the quantitative LC-MS proteomics measurements. By replicating analyses at different stages of processing, various technical components can be estimated and their individual contribution to technical variability can be dissected. This design can be easily adapted to other, quantitative proteomics pipelines. Herein, we applied this methodology,to our label-free workflow for the processing of human brain tissue. For this application, the pipeline was divided into four critical components: Tissue dissection and homogenization (extraction), protein denaturation followed by trypsin digestion and SPE cleanup (digestion), short-tern; run-to-run instrumental response fluctuation (instrumental variance), and long-term drift of the quantitative response of the LC-MS/MS platform over the 2 week period of continuous analysis (instrumental stability). From this analysis, we found the following contributions to variability: extraction (72%) >> instrumental variance (16%) > instrumental stability (8.4%) > digestion (3.1%). Furthermore, the stability of the platform and its suitability for discovery proteomics studies is demonstrated.
C1 [Piehowski, Paul D.; Petyuk, Vladislav A.; Orton, Daniel J.; Xie, Fang; Moore, Ronald J.; Camp, David G.; Smith, Richard D.] Pacific NW Natl Lab, Div Biol Sci, Richland, WA 99352 USA.
   [Piehowski, Paul D.; Petyuk, Vladislav A.; Orton, Daniel J.; Xie, Fang; Moore, Ronald J.; Camp, David G.; Smith, Richard D.] Pacific NW Natl Lab, Environm Mol Sci Lab, Richland, WA 99352 USA.
   [Lieberman, Andrew P.] Univ Michigan, Dept Pathol, Ann Arbor, MI 48109 USA.
   [Lieberman, Andrew P.; Albin, Roger L.] Michigan Alzheimers Dis Res Ctr, Ann Arbor, MI USA.
   [Albin, Roger L.] Univ Michigan, Dept Neurol, Ann Arbor, MI USA.
   [Albin, Roger L.] VAAAHS, Geriatr Res Educ & Clin Ctr, Ann Arbor, MI USA.
   [Ramirez-Restrepo, Manuel; Engel, Anzhelika; Myers, Amanda J.] Univ Miami, Miller Sch Med, Dept Psychiat & Behav Sci, Miami, FL 33136 USA.
   [Myers, Amanda J.] Univ Miami, Miller Sch Med, Div Neurosci, Miami, FL 33136 USA.
   [Myers, Amanda J.] Univ Miami, Miller Sch Med, Dept Human Genet & Genom, Miami, FL 33136 USA.
RP Myers, AJ (reprint author), Univ Miami, Miller Sch Med, Dept Psychiat & Behav Sci, Miami, FL 33136 USA.
EM amyers@med.miami.edu
RI Piehowski, Paul/B-1108-2011; Smith, Richard/J-3664-2012; 
OI Smith, Richard/0000-0002-2381-2349; Petyuk,
   Vladislav/0000-0003-4076-151X; Piehowski, Paul/0000-0001-5108-2227
FU National Center for Research Resources [5 P41 RR018522-10]; National
   Institute of General Medical Sciences from the National Institutes of
   Health [8 P41 GM103493-10]; NIH EUREKA grant [R01-AG-034504]; NIH
   [P50-AG08671]; National Institute of Allergy and Infectious Diseases
   [Y1-AI-8401]; Department of Energy Office of Biological and
   Environmental Research Genome Sciences Program under the Pan-omics
   project; DOE [DE-AC05-76RLO01830]
FX We thank the patients and their families for their self-less donations.
   This project was supported by grants from the National Center for
   Research Resources (5 P41 RR018522-10) and the National Institute of
   General Medical Sciences (8 P41 GM103493-10) from the National
   Institutes of Health as well as NIH EUREKA grant R01-AG-034504 to A.J.M.
   Tissue resources from the University of Michigan were funded by NIH
   grant P50-AG08671. Portions of this research were supported by the
   National Institute of Allergy and Infectious Diseases (Y1-AI-8401) and
   by the Department of Energy Office of Biological and Environmental
   Research Genome Sciences Program under the Pan-omics project. Work was
   performed in the Environmental Molecular Science Laboratory, a U.S.
   Department of Energy (DOE) national scientific user facility at Pacific
   Northwest National Laboratory (PNNL) in Richland, WA. Battelle operates
   PNNL for the DOE under contract DE-AC05-76RLO01830.
NR 70
TC 32
Z9 33
U1 1
U2 40
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1535-3893
EI 1535-3907
J9 J PROTEOME RES
JI J. Proteome Res.
PD MAY
PY 2013
VL 12
IS 5
BP 2128
EP 2137
DI 10.1021/pr301146m
PG 10
WC Biochemical Research Methods
SC Biochemistry & Molecular Biology
GA 139NI
UT WOS:000318589000011
PM 23495885
ER

PT J
AU Agapov, RL
   Sokolov, AP
   Foster, MD
AF Agapov, Rebecca L.
   Sokolov, Alexei P.
   Foster, Mark D.
TI Protecting TERS probes from degradation: extending mechanical and
   chemical stability
SO JOURNAL OF RAMAN SPECTROSCOPY
LA English
DT Article
DE tip enhanced Raman spectroscopy; protected plasmonics; tip degradation;
   dielectric coatings; chemical sensing
ID ATOMIC LAYER DEPOSITION; ENHANCED RAMAN-SPECTROSCOPY; SEPARATION
   DEPENDENCE; SILVER NANOPARTICLES; ALUMINA FILMS; METAL; SCATTERING;
   OXIDATION; GROWTH
AB The detailed surface chemistry of aluminum oxide protected silver films for use specifically in surface enhanced Raman spectroscopy and tip enhanced Raman spectroscopy (TERS) was investigated. We have demonstrated that increased storage and scanning use lifetimes for silver plasmonic structures are directly connected with the elimination of chemical degradation at the plasmonic structure surface. X-ray photoelectron spectroscopy of the metal films confirmed that a 23 nm thick coating of aluminum oxide prevented chemical attack of the underlying silver film for three months of storage in a desiccator, significantly increasing the storage lifetime of current probes. The scanning lifetime of a TERS probe when used to image a hard patterned silicon substrate was doubled with the addition of this protective coating. These measurements were performed without laser illumination in order to separate laser-induced heating degradation from pure mechanical degradation of the metallized probe currently encountered during TERS data collection. Copyright (c) 2013 John Wiley & Sons, Ltd.
C1 [Agapov, Rebecca L.; Foster, Mark D.] Univ Akron, Dept Polymer Sci, Akron, OH 44325 USA.
   [Sokolov, Alexei P.] Univ Tennessee, Div Chem Sci, ORNL, Knoxville, TN USA.
   [Sokolov, Alexei P.] Univ Tennessee, Dept Chem, Knoxville, TN 37996 USA.
RP Foster, MD (reprint author), Univ Akron, Dept Polymer Sci, Akron, OH 44325 USA.
EM mfoster@uakron.edu
FU U. S. Army Research Laboratory; U. S. Army Research Office
   [W911NF-09-1-0424, W911NF-10-1-3167]
FX This material is based upon work supported by, or in part by, the U. S.
   Army Research Laboratory and the U. S. Army Research Office under grant
   number W911NF-09-1-0424 and DURIP grant number W911NF-10-1-3167. The
   authors gratefully acknowledge Dr. Bojie Wang for help with TEM and SEM
   imaging and Dr. Edward Evans for assistance with physical vapor
   depositions.
NR 31
TC 9
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U1 1
U2 52
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 0377-0486
J9 J RAMAN SPECTROSC
JI J. Raman Spectrosc.
PD MAY
PY 2013
VL 44
IS 5
BP 710
EP 716
DI 10.1002/jrs.4268
PG 7
WC Spectroscopy
SC Spectroscopy
GA 142MQ
UT WOS:000318801900010
ER

PT J
AU Harker, BM
   Anderson, BE
AF Harker, Blaine M.
   Anderson, Brian E.
TI Optimization of the array mirror for time reversal techniques used in a
   half-space environment
SO JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA
LA English
DT Article
ID ACOUSTICS
AB Time reversal (TR) utilizes an array of transducers, a time reversal mirror (TRM), to locate sources. Here TR is applied to simple sources using steady-state waveforms in a numerical, point source model in a half-space environment. It is found that TR can effectively localize a simple source broadcasting a continuous wave, depending on the angular spacing. Furthermore, the angular spacing and the aperture of the TRM are the most important parameters when creating a setup of receivers for imaging a source. This work optimizes a TRM when the source's location is known within a region of certainty. (C) 2013 Acoustical Society of America
C1 [Harker, Blaine M.] Brigham Young Univ, Dept Phys & Astron, Acoust Res Grp, Eyring Sci Ctr N283, Provo, UT 84602 USA.
   [Anderson, Brian E.] Los Alamos Natl Lab, Geophys Grp EES 17, Los Alamos, NM 87545 USA.
RP Harker, BM (reprint author), Brigham Young Univ, Dept Phys & Astron, Acoust Res Grp, Eyring Sci Ctr N283, Provo, UT 84602 USA.
EM blaineharker@gmail.com; bea@lanl.gov
FU Acoustical Society of America's Robert W. Young Award; Office of
   Research and Creative Activities at Brigham Young University (BYU)
FX This research has been sponsored by the Acoustical Society of America's
   Robert W. Young Award and by a grant from the Office of Research and
   Creative Activities at Brigham Young University (BYU). We also
   acknowledge the BYU Acoustic Research Group as well as the Fulton
   Supercomputing Lab for the use of their computing resources.
NR 15
TC 3
Z9 4
U1 0
U2 9
PU ACOUSTICAL SOC AMER AMER INST PHYSICS
PI MELVILLE
PA STE 1 NO 1, 2 HUNTINGTON QUADRANGLE, MELVILLE, NY 11747-4502 USA
SN 0001-4966
J9 J ACOUST SOC AM
JI J. Acoust. Soc. Am.
PD MAY
PY 2013
VL 133
IS 5
BP EL351
EP EL357
DI 10.1121/1.4798268
PN 1
PG 7
WC Acoustics; Audiology & Speech-Language Pathology
SC Acoustics; Audiology & Speech-Language Pathology
GA 139BH
UT WOS:000318555900003
PM 23656093
ER

PT J
AU Kim, B
   Hong, S
   Choi, H
   Ryu, WH
   Paik, H
   Choi, YY
   Kwon, HS
   No, K
AF Kim, Bongsoo
   Hong, Seungbum
   Choi, Hyunwoo
   Ryu, Won-Hee
   Paik, Haemin
   Choi, Yoon-Young
   Kwon, Hyuk-Sang
   No, Kwangsoo
TI Fabrication and Characterization of Nanoscale Ferroelectric Honeycombs
SO JOURNAL OF THE AMERICAN CERAMIC SOCIETY
LA English
DT Article
ID PBTIO3 NANOTUBES; HYDROTHERMAL METHOD; ARRAYS; PHOTOLUMINESCENCE;
   COMPOSITES; MICROSCOPY; NANOWIRES; GROWTH; FILMS
AB Nanoscale ferroelectric honeycombs, comprised of vertically aligned PbTiO3 nanotubes, are fabricated by vapor phase reaction between lead acetate-infiltrated TiO2 nanotubes and PbO vapor. PbTiO3 nanohoneycombs converted by vapor phase reaction at 550 degrees C showed well-aligned nanoscale structure with alignment angle less than 1 degrees and well-defined ferroelectric properties with the effective piezoelectric coefficient of 44pm/V. This novel nanoscale structure is expected to facilitate high efficiency sensing of electromechanical and electrochemical stimuli.
C1 [Kim, Bongsoo; Hong, Seungbum; Choi, Hyunwoo; Ryu, Won-Hee; Paik, Haemin; Choi, Yoon-Young; Kwon, Hyuk-Sang; No, Kwangsoo] Korea Adv Inst Sci & Technol, Dept Mat Sci & Engn, Taejon 305701, South Korea.
   [Hong, Seungbum; Choi, Yoon-Young] Argonne Natl Lab, Nanosci & Technol Div, Lemont, IL 60439 USA.
RP No, K (reprint author), Korea Adv Inst Sci & Technol, Dept Mat Sci & Engn, Taejon 305701, South Korea.
EM hong@anl.gov; ksno@kaist.ac.kr
RI Kwon, Hyuk Sang/C-1889-2011; No, Kwangsoo/C-1983-2011; Hong,
   Seungbum/B-7708-2009; Ryu, Won-Hee/F-8375-2014
OI Hong, Seungbum/0000-0002-2667-1983; Ryu, Won-Hee/0000-0002-0203-2992
FU Mid-career Researcher Program through the National Research Foundation
   of Korea [2010-0015063]; Ministry of Education, Science and Technology;
   UChicago Argonne, a U.S. DOE Office of Science Laboratory
   [DE-AC02-06CH11357]
FX This research was supported by the Mid-career Researcher Program
   (2010-0015063) through the National Research Foundation of Korea funded
   by Ministry of Education, Science and Technology. Work at Argonne
   National Laboratory (S. H., data analysis and writing of manuscript) was
   supported by UChicago Argonne, a U.S. DOE Office of Science Laboratory,
   operated under contract no. DE-AC02-06CH11357.
NR 32
TC 3
Z9 3
U1 0
U2 17
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 0002-7820
J9 J AM CERAM SOC
JI J. Am. Ceram. Soc.
PD MAY
PY 2013
VL 96
IS 5
BP 1355
EP 1358
DI 10.1111/jace.12352
PG 4
WC Materials Science, Ceramics
SC Materials Science
GA 142ML
UT WOS:000318801400006
ER

PT J
AU Costa, GCC
   Xu, HW
   Navrotsky, A
AF Costa, Gustavo C. C.
   Xu, Hongwu
   Navrotsky, Alexandra
TI Thermochemistry of Barium Hollandites
SO JOURNAL OF THE AMERICAN CERAMIC SOCIETY
LA English
DT Article
ID HIGH-TEMPERATURE CALORIMETRY; EFFECTIVE IONIC-RADII;
   STRUCTURAL-ANALYSIS; RADIOACTIVE CESIUM; SOLID-SOLUTION; THERMODYNAMICS;
   SYSTEM; PHASE; STABILITY; CHEMISTRY
AB Barium hollandites, a family of framework titanates that can potentially be used for the immobilization of short-lived fission products (especially 137Cs) in radioactive wastes, have been investigated by high-temperature oxide melt solution calorimetry using 2PbO center dot B2O3 solvent at 702 degrees C. The enthalpies of formation from constituent oxides show increasing energetic stability of the hollandite phase as Ti4+ is substituted by Mg2+, Al3+, and Fe3+, in that order. In general, the thermodynamic stability increases with decreasing average cation radius in the sites, and when the tolerance factor approaches one. The Al- and Fe-hollandites are more stable than phase assemblages containing BaTiO3 perovskite and Al/Fe/Ti oxides, whereas Mg-hollandite is less stable than the corresponding assemblage of BaTiO3 perovskite, MgTiO3 ilmenite, and TiO2. This instability makes Mg-hollandite a less suitable host for fission products. Hollandite phase formation during metal citrate combustion synthesis depends more on thermodynamic stability and phase chemistry than on the annealing temperature.
C1 [Costa, Gustavo C. C.; Navrotsky, Alexandra] Univ Calif Davis, Peter A Rock Thermochem Lab, Davis, CA 95616 USA.
   [Costa, Gustavo C. C.; Navrotsky, Alexandra] Univ Calif Davis, NEAT ORU, Davis, CA 95616 USA.
   [Xu, Hongwu] Los Alamos Natl Lab, Earth & Environm Sci Div, Los Alamos, NM 87545 USA.
RP Navrotsky, A (reprint author), Univ Calif Davis, Peter A Rock Thermochem Lab, 1 Shields Ave, Davis, CA 95616 USA.
EM anavrotsky@ucdavis.edu
OI Xu, Hongwu/0000-0002-0793-6923
FU Laboratory-directed Research and Development (LDRD) program of Los
   Alamos National Laboratory; DOE [DE-AC52-06NA25396]
FX This work was supported by the Laboratory-directed Research and
   Development (LDRD) program of Los Alamos National Laboratory, which is
   operated by Los Alamos National Security LLC under DOE Contract No.
   DE-AC52-06NA25396. We thank Tien B. Tran for help and comments on the
   manuscript.
NR 45
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U1 7
U2 54
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 0002-7820
EI 1551-2916
J9 J AM CERAM SOC
JI J. Am. Ceram. Soc.
PD MAY
PY 2013
VL 96
IS 5
BP 1554
EP 1561
DI 10.1111/jace.12224
PG 8
WC Materials Science, Ceramics
SC Materials Science
GA 142ML
UT WOS:000318801400035
ER

PT J
AU Park, JJ
   Kim, DY
   Lee, JG
   Kim, D
   Oh, JH
   Seong, TY
   van Hest, MFAM
   Yoon, SS
AF Park, Jung-Jae
   Kim, Do-Yeon
   Lee, Jong-Gun
   Kim, Donghwan
   Oh, Joon-Ho
   Seong, Tae-Yeon
   van Hest, Maikel F. A. M.
   Yoon, Sam S.
TI Superhydrophilic Transparent Titania Films by Supersonic Aerosol
   Deposition
SO JOURNAL OF THE AMERICAN CERAMIC SOCIETY
LA English
DT Article
ID ANATASE TIO2 FILMS; THIN-FILMS; OPTICAL-PROPERTIES; ROOM-TEMPERATURE;
   HYDROPHILIC PROPERTIES; NOZZLE-FLOW; DIOXIDE; CONVERSION; BROOKITE;
   SURFACES
AB Photocatalytic and hydrophilic TiO2 thin-film applications include water purification, cancer therapy, solar energy conversion, self-cleaning devices, and antifogging windows. We demonstrate superhydrophilicity of aerosol-deposition (AD) TiO2 films on a glass substrate without use of a carrier solvent, thereby removing the possibility of impurity contamination. AD films exhibit high visible light transmittance (greater than 80%) and superhydrophilicity (0 degrees contact angle) with even minimal UV-light irradiation exposure. This AD method represents a significant step toward the realization of economically viable, functional thin films for the aforementioned applications.
C1 [Park, Jung-Jae; Kim, Do-Yeon; Lee, Jong-Gun; Yoon, Sam S.] Korea Univ, Sch Mech Eng, Seoul 136713, South Korea.
   [Kim, Donghwan; Oh, Joon-Ho; Seong, Tae-Yeon] Korea Univ, Sch Mat Sci & Eng, Seoul 136713, South Korea.
   [van Hest, Maikel F. A. M.] Natl Renewable Energy Lab, Golden, CO 80401 USA.
RP Yoon, SS (reprint author), Korea Univ, Sch Mech Eng, Seoul 136713, South Korea.
EM skyoon@korea.ac.kr
OI Oh, Joon-Ho/0000-0002-3405-4803
FU Human Resources Development of the Korea Institute of Energy Technology
   Evaluation and Planning (KETEP) [20104010100640]; National Research
   Foundation of Korea [NRF-2012-0001169, NRF-2011-0030433, 2010-0010217];
   Converging Research Center Program through the Ministry of Education,
   Science and Technology [2010K000969]; Korean government (MEST)
FX This work was supported by the Human Resources Development of the Korea
   Institute of Energy Technology Evaluation and Planning (KETEP, No.
   20104010100640), National Research Foundation of Korea
   (NRF-2012-0001169), and the Converging Research Center Program through
   the Ministry of Education, Science and Technology (2010K000969). This
   work was also supported by the National Research Foundation of Korea
   (NRF-2011-0030433 and 2010-0010217) grant funded by the Korean
   government (MEST).
NR 26
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U1 2
U2 37
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 0002-7820
J9 J AM CERAM SOC
JI J. Am. Ceram. Soc.
PD MAY
PY 2013
VL 96
IS 5
BP 1596
EP 1601
DI 10.1111/jace.12164
PG 6
WC Materials Science, Ceramics
SC Materials Science
GA 142ML
UT WOS:000318801400040
ER

PT J
AU Edmondson, PD
   Young, NP
   Parish, CM
   Moll, S
   Namavar, F
   Weber, WJ
   Zhang, YW
AF Edmondson, Philip D.
   Young, Neil P.
   Parish, Chad M.
   Moll, Sandra
   Namavar, Fereydoon
   Weber, William J.
   Zhang, Yanwen
TI Ion-Beam-Induced Chemical Mixing at a Nanocrystalline CeO2-Si Interface
SO JOURNAL OF THE AMERICAN CERAMIC SOCIETY
LA English
DT Article
ID DISPLACEMENT ENERGIES; IRRADIATION; CERIUM; SI; PHASE; FUELS
AB Thin films of nanocrystalline ceria deposited onto a silicon substrate have been irradiated with 3MeV Au+ ions to a total dose of 34displacements per atom to examine the film/substrate interfacial response upon displacement damage. Under irradiation, a band of contrast is observed to form that grows under further irradiation. Scanning and high-resolution transmission electron microscopy imaging and analysis suggest that this band of contrast is a cerium silicate phase with an approximate Ce:Si:O composition ratio of 1:1:3 in an amorphous nature. The slightly nonstoichiometric composition arises due to the loss of mobile oxygen within the cerium silicate phase under the current irradiation condition. This nonequilibrium phase is formed as a direct result of ion-beam-induced chemical mixing caused by ballistic collisions between the incoming ion and the lattice atoms. This may hold promise in ion beam engineering of cerium silicates for microelectronic applications e.g., the fabrication of blue LEDs.
C1 [Edmondson, Philip D.; Young, Neil P.] Univ Oxford, Dept Mat, Oxford OX1 3PH, England.
   [Parish, Chad M.; Weber, William J.; Zhang, Yanwen] Oak Ridge Natl Lab, Mat Sci & Technol Div, Oak Ridge, TN 37831 USA.
   [Moll, Sandra] Ctr Etud Saclay, CEA DEN, Serv Rech Met Phys, F-91191 Gif Sur Yvette, France.
   [Namavar, Fereydoon] Univ Nebraska Med Ctr, Omaha, NE 68198 USA.
   [Weber, William J.; Zhang, Yanwen] Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USA.
RP Edmondson, PD (reprint author), Univ Oxford, Dept Mat, Parks Rd, Oxford OX1 3PH, England.
EM philip.edmondson@materials.ox.ac.uk
RI Weber, William/A-4177-2008; Parish, Chad/J-8381-2013; Edmondson,
   Philip/O-7255-2014
OI Weber, William/0000-0002-9017-7365; Edmondson,
   Philip/0000-0001-8990-0870
FU Materials Science of Actinides, an Energy Frontier Research Center; US
   Department of Energy, Office of Science, Office of Basic Energy
   Sciences, Materials Sciences and Engineering Division; Office of Basic
   Energy Sciences, U.S. Department of Energy; Department of Energy's
   Office of Biological and Environmental Research
FX This work was supported as part of the Materials Science of Actinides,
   an Energy Frontier Research Center funded by the US Department of
   Energy, Office of Science, Office of Basic Energy Sciences, Materials
   Sciences and Engineering Division. Part of the microscope
   characterization is carried out at Oak Ridge National Laboratory's
   Shared Research Equipment (ShaRE) User Program, which is sponsored by
   the Office of Basic Energy Sciences, U.S. Department of Energy. A
   portion of the research was performed at the Environmental Molecular
   Sciences Laboratory (EMSL), a national scientific user facility
   sponsored by the Department of Energy's Office of Biological and
   Environmental Research, and located at Pacific Northwest National
   Laboratory.
NR 33
TC 4
Z9 4
U1 3
U2 32
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 0002-7820
EI 1551-2916
J9 J AM CERAM SOC
JI J. Am. Ceram. Soc.
PD MAY
PY 2013
VL 96
IS 5
BP 1666
EP 1672
DI 10.1111/jace.12214
PG 7
WC Materials Science, Ceramics
SC Materials Science
GA 142ML
UT WOS:000318801400050
ER

PT J
AU Farrow, CL
   Bediako, DK
   Surendranath, Y
   Nocera, DG
   Billinge, SJL
AF Farrow, Christopher L.
   Bediako, D. Kwabena
   Surendranath, Yogesh
   Nocera, Daniel G.
   Billinge, Simon J. L.
TI Intermediate-Range Structure of Self-Assembled Cobalt-Based
   Oxygen-Evolving Catalyst
SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Article
ID PAIR DISTRIBUTION FUNCTION; WATER-OXIDATION CATALYST; SOLAR-ENERGY;
   EVOLUTION REACTION; PHOSPHATE; NANOPARTICLES; CHEMISTRY; DIFFUSION;
   DYNAMICS; PH
AB Continual improvements in solar-to-fuels catalysis require a genuine understanding of catalyst structure-function relationships, not only with respect to local order, but also intermediate range structure. We report the X-ray pair distribution function analysis of the nanoscale order of an oxidic cobalt-based water-splitting catalyst and uncover an electrolyte dependence in the intermediate-range structure of catalyst films. Whereas catalyst films formed in borate electrolyte (CoBi) exhibit coherent domains consisting of 3-4 nm cobaltate clusters with up to three layers, films deposited in phosphate electrolyte (CoPi) comprise significantly smaller clusters that are not coherently stacked. These structural insights are correlated with marked differences in activity between CoPi and CoBi films.
C1 [Farrow, Christopher L.; Billinge, Simon J. L.] Columbia Univ, Dept Appl Phys & Appl Math, New York, NY 10027 USA.
   [Bediako, D. Kwabena; Surendranath, Yogesh; Nocera, Daniel G.] Harvard Univ, Dept Chem & Chem Biol, Cambridge, MA 02138 USA.
   [Billinge, Simon J. L.] Brookhaven Natl Lab, Condensed Matter Phys & Mat Sci Dept, Upton, NY 11973 USA.
RP Nocera, DG (reprint author), Harvard Univ, Dept Chem & Chem Biol, Cambridge, MA 02138 USA.
EM dnocera@fas.harvard.edu; sb2896@columbia.edu
FU DOE, Division of Materials Sciences and Division of Chemical Sciences
   [DE-AC02-98CH10886]; DOE [DE-SC0001085];  [DE-SC0009565]
FX X-ray experiments were carried out at the National Synchrotron Light
   Source, Brookhaven National Laboratory, which is supported by the DOE,
   Division of Materials Sciences and Division of Chemical Sciences,
   DE-AC02-98CH10886. Work in the Billinge group was supported by the DOE
   under DE-SC0001085. Work in the Nocera group was supported by Grant
   DE-SC0009565.
NR 44
TC 57
Z9 57
U1 10
U2 233
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0002-7863
J9 J AM CHEM SOC
JI J. Am. Chem. Soc.
PD MAY 1
PY 2013
VL 135
IS 17
BP 6403
EP 6406
DI 10.1021/ja401276f
PG 4
WC Chemistry, Multidisciplinary
SC Chemistry
GA 137WO
UT WOS:000318469100007
PM 23547707
ER

PT J
AU Rahimi, A
   Azarpira, A
   Kim, H
   Ralph, J
   Stahl, SS
AF Rahimi, Alireza
   Azarpira, Ali
   Kim, Hoon
   Ralph, John
   Stahl, Shannon S.
TI Chemoselective Metal-Free Aerobic Alcohol Oxidation in Lignin
SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Article
ID ALKALINE HYDROGEN-PEROXIDE; BETA-GUAIACYL ETHER; O BOND-CLEAVAGE; MODEL
   COMPOUNDS; CATALYZED OXIDATION; VANADIUM CATALYST; HIGHLY EFFICIENT;
   MILD CONDITIONS; NITRIC-ACID; C-C
AB An efficient organocatalytic method for chemoselective aerobic oxidation of: secondary benzylic alcohols within lignin model compounds has been identified. Extension to selective oxidation in natural lignins has also been demonstrated. The optimal catalyst system consists of 4-acetamido-TEMPO (5 mol %; TEMPO = 2,2,6,6-tetramethylpiperidine-N-oxyl) in combination with HNO3 and HCl (10 mol % each). Preliminary studies highlight the prospect of combining this method with a subsequent oxidation step to achieve C-C bond cleavage.
C1 [Rahimi, Alireza; Stahl, Shannon S.] Univ Wisconsin, Dept Chem, Madison, WI 53706 USA.
   [Azarpira, Ali; Kim, Hoon; Ralph, John] Wisconsin Energy Inst, Dept Biochem, Madison, WI 53726 USA.
   [Azarpira, Ali; Kim, Hoon; Ralph, John] Wisconsin Energy Inst, DOE Great Lakes Bioenergy Res Ctr, Madison, WI 53726 USA.
RP Stahl, SS (reprint author), Univ Wisconsin, Dept Chem, 1101 Univ Ave, Madison, WI 53706 USA.
EM stahl@chem.wisc.edu
FU DOE Great Lakes Bioenergy Research Center (DOE BER Office of Science)
   [DE-FC02-07ER64494]; NSF [CHE-9208463]; NIH [S10 RR08389]
FX This work was funded by the DOE Great Lakes Bioenergy Research Center
   (DOE BER Office of Science DE-FC02-07ER64494). NMR facilities were
   partially supported by the NSF (CHE-9208463) and NIH (S10 RR08389).
NR 50
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Z9 138
U1 27
U2 283
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0002-7863
J9 J AM CHEM SOC
JI J. Am. Chem. Soc.
PD MAY 1
PY 2013
VL 135
IS 17
BP 6415
EP 6418
DI 10.1021/ja401793n
PG 4
WC Chemistry, Multidisciplinary
SC Chemistry
GA 137WO
UT WOS:000318469100010
PM 23570328
ER

PT J
AU Brasse, M
   Campora, J
   Ellman, JA
   Bergman, RG
AF Brasse, Mikael
   Campora, Juan
   Ellman, Jonathan A.
   Bergman, Robert G.
TI Mechanistic Study of the Oxidative Coupling of Styrene with
   2-Phenylpyridine Derivatives Catalyzed by Cationic Rhodium(III) via C-H
   Activation
SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Article
ID N BOND FORMATION; RH; OLEFINATION; ALKYNES; EFFICIENT; ARENE; IR;
   REGIOSELECTIVITY; REACTIVITY; ARYLATION
AB The Rh(III)-catalyzed oxidative coupling of alkenes with arenes provides a greener alternative to the classical Heck reaction for the synthesis of arene-functionalized alkenes. The present mechanistic study gives insights for the rational development of this key transformation. The catalyst resting states and the rate law of the reaction have been identified. The reaction rate is solely dependent on the catalyst and alkene concentrations, and the turnover-limiting step is the migratory insertion of the alkene into a Rh-C(aryl) bond.
C1 [Brasse, Mikael; Campora, Juan] Univ Seville, CSIC, Inst Invest Quim, Seville 41092, Spain.
   [Brasse, Mikael] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA.
   [Ellman, Jonathan A.] Yale Univ, Dept Chem, New Haven, CT 06520 USA.
   [Bergman, Robert G.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Chem Sci, Berkeley, CA 94720 USA.
RP Ellman, JA (reprint author), Yale Univ, Dept Chem, 225 Prospect St, New Haven, CT 06520 USA.
EM jonathan.ellman@yale.edu; rbergman@berkeley.edu
RI Campora, Juan/A-6469-2009; Ellman, Jonathan/C-7732-2013
OI Campora, Juan/0000-0001-7305-1296; 
FU NIH [GM069559]; Office of Energy Research, Office of Basic Energy
   Sciences, Chemical Sciences Division, U.S. Department of Energy
   [DE-AC02-05CH11231]; Government of Spain [CTQ2009-11721]; Junta de
   Andalucia [FQM6276]; Seventh European Community Framework Programme for
   a Marie Curie International Outgoing Fellowship
FX This work was supported by the NIH (Grant GM069559 to J.A.E.); the
   Director, Office of Energy Research, Office of Basic Energy Sciences,
   Chemical Sciences Division, U.S. Department of Energy (Contract
   DE-AC02-05CH11231 to R.G.B.); the Government of Spain (Project
   CTQ2009-11721 to J.C.); and the Junta de Andalucia (Project FQM6276 to
   J.C.). M.B. acknowledges the Seventh European Community Framework
   Programme for a Marie Curie International Outgoing Fellowship that
   supported this research and Dr. Michael Tauchert for helpful
   discussions.
NR 31
TC 50
Z9 50
U1 4
U2 100
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0002-7863
J9 J AM CHEM SOC
JI J. Am. Chem. Soc.
PD MAY 1
PY 2013
VL 135
IS 17
BP 6427
EP 6430
DI 10.1021/ja401561q
PG 4
WC Chemistry, Multidisciplinary
SC Chemistry
GA 137WO
UT WOS:000318469100013
PM 23590843
ER

PT J
AU Pistner, AJ
   Lutterman, DA
   Ghidiu, MJ
   Ma, YZ
   Rosenthal, J
AF Pistner, Allen J.
   Lutterman, Daniel A.
   Ghidiu, Michael J.
   Ma, Ying-Zhong
   Rosenthal, Joel
TI Synthesis, Electrochemistry, and Photophysics of a Family of Phlorin
   Macrocycles That Display Cooperative Fluoride Binding
SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Article
ID SENSITIZED SOLAR-CELLS; ANION-BINDING; ELECTRON-TRANSFER; EXCITED-STATE;
   PORPHYRIN; PHOTOSYNTHESIS; CALIXPYRROLES; AGENTS; CALIXPHYRINS;
   CAROTENOIDS
AB A homologous set of 5,5-dimethylphlorin macrocycles in which the identity of one aryl ring is systematically varied has been prepared These derivatives contain ancillary pentafluorophenyl (3H(Phl(F))), mesityl (3H(Phl(Mes))), 2,6-bismethoxyphenyl (3H(Phl(Ome))), 4-nitrophenyl (3H(Phl(NO2)), or 4-tert-butylcarboxyphenyl (3H(Phl(CO2tBu))) groups at the 15-meso-position. These porphyrinoids were prepared in good yields (35-50%) and display unusual multielectron redox and photochemical properties. Each phlorin can be oxidized up to three times at modest potentials and can be reduced twice. The electron-donating and electron-releasing properties of the ancillary aryl substituent attenuate the potentials of these redox events; phlorins containing electron-donating aryl groups are easier to oxidize and harder to reduce, while the opposite trend is observed for phlorins containing electron-withdrawing functionalities. Phlorin substitution also has a pronounced effect on the observed photophysics, as introduction of electron-releasing aryl groups on the periphery of the macrocycle is manifest in larger emission quantum yields and longer fluorescence lifetimes. Each phlorin displays an intriguing supramolecular chemistry and can bind 2 equiv of fluoride. This binding is allosteric in nature, and the strength of halide binding correlates with the ability of the phlorin to stabilize the buildup of charge. Moreover, fluoride binding to generate complexes of the form 3H(Phl(R)).2F(-) modulates the redox potentials of the parent phlorin. As such, titration of phlorin with a source of fluoride represents a facile, method to tune the ability of this class of porphyrinoid to absorb light and engage in redox chemistry.
C1 [Pistner, Allen J.; Ghidiu, Michael J.; Rosenthal, Joel] Univ Delaware, Dept Chem & Biochem, Newark, DE 19716 USA.
   [Lutterman, Daniel A.; Ma, Ying-Zhong] Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN 37831 USA.
RP Rosenthal, J (reprint author), Univ Delaware, Dept Chem & Biochem, Newark, DE 19716 USA.
EM joelr@udel.edu
RI Lutterman, Daniel/C-9704-2016; Ma, Yingzhong/L-6261-2016; 
OI Lutterman, Daniel/0000-0002-4875-6056; Ma,
   Yingzhong/0000-0002-8154-1006; Rosenthal, Joel/0000-0002-6814-6503
FU Institutional Development Award (IDeA) from the National Institute of
   General Medical Sciences of the National Institutes of Health
   [P20GM103541]; University of Delaware Research Foundation; Donors of the
   American Chemical Society's Petroleum Research Fund; Division of
   Chemical Sciences, Geosciences, and Biosciences, Office of Basic Energy
   Sciences, U.S. Department of Energy; NSF; NIH [NSF-MIR 0421224, NSF-CRIF
   MU CHE-0840401, CHE-0541775, P20 RR017716]
FX We thank Sean Herron (University of Delaware) for assistance with UV-vis
   fluoride titration experiments. Research reported in this publication
   was supported by an Institutional Development Award (IDeA) from the
   National Institute of General Medical Sciences of the National
   Institutes of Health under Grant P20GM103541. J.R. also thanks the
   University of Delaware Research Foundation and the Donors of the
   American Chemical Society's Petroleum Research Fund for financial
   support. D.A.L. and Y.-Z.M, were sponsored by the Division of Chemical
   Sciences, Geosciences, and Biosciences, Office of Basic Energy Sciences,
   U.S. Department of Energy. NMR and other data were acquired at
   University of Delaware using instrumentation obtained with assistance
   from the NSF and NIH (Grants NSF-MIR 0421224, NSF-CRIF MU CHE-0840401
   and CHE-0541775, and NIH P20 RR017716).
NR 48
TC 22
Z9 22
U1 3
U2 61
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0002-7863
J9 J AM CHEM SOC
JI J. Am. Chem. Soc.
PD MAY 1
PY 2013
VL 135
IS 17
BP 6601
EP 6607
DI 10.1021/ja401391z
PG 7
WC Chemistry, Multidisciplinary
SC Chemistry
GA 137WO
UT WOS:000318469100036
PM 23594346
ER

PT J
AU Dennis, EA
   Gundlach-Graham, AW
   Enke, CG
   Ray, SJ
   Carado, AJ
   Barinaga, CJ
   Koppenaal, DW
   Hieftje, GM
AF Dennis, Elise A.
   Gundlach-Graham, Alexander W.
   Enke, Christie G.
   Ray, Steven J.
   Carado, Anthony J.
   Barinaga, Charles J.
   Koppenaal, David W.
   Hieftje, Gary M.
TI How Constant Momentum Acceleration Decouples Energy and Space Focusing
   in Distance-of-Flight and Time-of-Flight Mass Spectrometries
SO JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY
LA English
DT Article
DE Time-of-flight; Distance-of-flight; Turnaround time; Mass spectrometry;
   Glow discharge; Array detector
ID INDUCTIVELY-COUPLED PLASMA; GLOW-DISCHARGE SOURCE; FOCAL-PLANE; IMPROVED
   RESOLUTION; DETECTOR ARRAY; ION DETECTION; SPECTROGRAPH; PERFORMANCE;
   DESIGN; EXTRACTION
AB Resolution in time-of-flight mass spectrometry (TOFMS) is ordinarily limited by the initial energy and space distributions within an instrument's acceleration region and by the length of the field-free flight zone. With gaseous ion sources, these distributions lead to systematic flight-time errors that cannot be simultaneously corrected with conventional static-field ion-focusing devices (i.e., an ion mirror). It is known that initial energy and space distributions produce non-linearly correlated errors in both ion velocity and exit time from the acceleration region. Here we reinvestigate an old acceleration technique, constant-momentum acceleration (CMA), to decouple the effects of initial energy and space distributions. In CMA, only initial ion energies (and not their positions) affect the velocity ions gain. Therefore, with CMA, the spatial distribution within the acceleration region can be manipulated without creating ion-velocity error. The velocity differences caused by a spread in initial ion energy can be corrected with an ion mirror. We discuss here the use of CMA and independent focusing of energy and space distributions for both distance-of-flight mass spectrometry (DOFMS) and TOFMS. Performance characteristics of our CMA-DOFMS and CMA-TOFMS instrument, fitted with a glow-discharge ionization source, are described. In CMA-DOFMS, resolving powers (FWHM) of greater than 1000 are achieved for atomic ions with a flight length of 285 mm. In CMA-TOFMS, only ions over a narrow range of m/z values can be energy-focused; however, the technique offers improved resolution for these focused ions, with resolving powers of greater than 2000 for a separation distance of 350 mm.
C1 [Dennis, Elise A.; Gundlach-Graham, Alexander W.; Ray, Steven J.; Hieftje, Gary M.] Indiana Univ, Dept Chem, Bloomington, IN 47405 USA.
   [Enke, Christie G.] Univ New Mexico, Dept Chem & Chem Biol, Albuquerque, NM 87131 USA.
   [Carado, Anthony J.; Barinaga, Charles J.; Koppenaal, David W.] Pacific NW Natl Lab, Richland, WA 99352 USA.
RP Hieftje, GM (reprint author), Indiana Univ, Dept Chem, Bloomington, IN 47405 USA.
EM hieftje@indiana.edu
RI Gundlach-Graham, Alexander/B-6069-2011; 
OI Gundlach-Graham, Alexander/0000-0003-4806-6255; Ray,
   Steven/0000-0001-5675-1258
FU National Science Foundation [DBI-1062846]; Department of Energy
   [DE-FG02-09ER14980]; Robert and Marjorie Mann Fellowship; US DOE by
   Batelle Memorial Institute [DE-AC06-76RLO-1830op]
FX This work was supported in part by the National Science Foundation
   through grant DBI-1062846. Partial salary funding came from the
   Department of Energy through grant DE-FG02-09ER14980. A. W. G-G. thanks
   the Robert and Marjorie Mann Fellowship for financial support. Part of
   this work was performed in collaboration with Pacific Northwest National
   Laboratory, operated for the US DOE by Batelle Memorial Institute under
   contract DE-AC06-76RLO-1830op.
NR 59
TC 9
Z9 9
U1 3
U2 23
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 1044-0305
J9 J AM SOC MASS SPECTR
JI J. Am. Soc. Mass Spectrom.
PD MAY
PY 2013
VL 24
IS 5
BP 690
EP 700
DI 10.1007/s13361-013-0587-z
PG 11
WC Biochemical Research Methods; Chemistry, Analytical; Chemistry,
   Physical; Spectroscopy
SC Biochemistry & Molecular Biology; Chemistry; Spectroscopy
GA 138MI
UT WOS:000318512300006
PM 23526167
ER

PT J
AU Beeby, M
   Gumbart, JC
   Roux, B
   Jensen, GJ
AF Beeby, Morgan
   Gumbart, James C.
   Roux, Benoit
   Jensen, Grant J.
TI Architecture and assembly of the Gram-positive cell wall
SO MOLECULAR MICROBIOLOGY
LA English
DT Article
ID ESCHERICHIA-COLI; ELECTRON TOMOGRAPHY; MOLECULAR-DYNAMICS;
   BACILLUS-SUBTILIS; PEPTIDOGLYCAN; MREB; SACCULUS; SHAPE; NAMD
AB The bacterial cell wall is a mesh polymer of peptidoglycan linear glycan strands cross-linked by flexible peptides that determines cell shape and provides physical protection. While the glycan strands in thin Gram-negative' peptidoglycan are known to run circumferentially around the cell, the architecture of the thicker Gram-positive' form remains unclear. Using electron cryotomography, here we show that Bacillus subtilis peptidoglycan is a uniformly dense layer with a textured surface. We further show it rips circumferentially, curls and thickens at free edges, and extends longitudinally when denatured. Molecular dynamics simulations show that only atomic models based on the circumferential topology recapitulate the observed curling and thickening, in support of an inside-to-outside' assembly process. We conclude that instead of being perpendicular to the cell surface or wrapped in coiled cables (two alternative models), the glycan strands in Gram-positive cell walls run circumferentially around the cell just as they do in Gram-negative cells. Together with providing insights into the architecture of the ultimate determinant of cell shape, this study is important because Gram-positive peptidoglycan is an antibiotic target crucial to the viability of several important rod-shaped pathogens including Bacillus anthracis, Listeria monocytogenes, and Clostridium difficile.
C1 [Beeby, Morgan; Jensen, Grant J.] CALTECH, Pasadena, CA 91125 USA.
   [Beeby, Morgan; Jensen, Grant J.] Howard Hughes Med Inst, Pasadena, CA 91125 USA.
   [Gumbart, James C.; Roux, Benoit] Argonne Natl Lab, Biosci Div, Argonne, IL 60439 USA.
   [Roux, Benoit] Univ Chicago, Dept Biochem & Mol Biol, Chicago, IL 60637 USA.
   [Roux, Benoit] Univ Chicago, Gordon Ctr Integrat Sci, Chicago, IL 60637 USA.
RP Jensen, GJ (reprint author), CALTECH, 1200 E Calif Blvd, Pasadena, CA 91125 USA.
EM jensen@caltech.edu
RI Beeby, Morgan/G-2768-2013
OI Beeby, Morgan/0000-0001-6413-9835
FU National Institute of Health [R01 GM062342]; Argonne Director's
   Postdoctoral Fellowship; Howard Hughes Medical Institute; Gordon and
   Betty Moore Center for Integrative Study of Cell Regulation at Caltech;
   Biological Sciences Division of the University of Chicago and Argonne
   National Laboratory [S10 RR029030-01]
FX We would like to thank Simon Foster for an initial gift of purified B.
   subtilis sacculi and the laboratory of Doug Rees for use of the MPBio
   FastPrep-24. This work was funded by National Institute of Health Grant
   R01 GM062342 to B.R., an Argonne Director's Postdoctoral Fellowship
   (J.C.G.), the Howard Hughes Medical Institute, and the Gordon and Betty
   Moore Center for Integrative Study of Cell Regulation at Caltech.
   Simulations were carried out with resources provided by the Computation
   Institute and the Biological Sciences Division of the University of
   Chicago and Argonne National Laboratory, under Grant S10 RR029030-01. We
   would also like to thank Brigitte Ziervogel for helpful comments on the
   manuscript.
NR 35
TC 27
Z9 27
U1 4
U2 42
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 0950-382X
J9 MOL MICROBIOL
JI Mol. Microbiol.
PD MAY
PY 2013
VL 88
IS 4
BP 664
EP 672
DI 10.1111/mmi.12203
PG 9
WC Biochemistry & Molecular Biology; Microbiology
SC Biochemistry & Molecular Biology; Microbiology
GA 142RH
UT WOS:000318814300004
PM 23600697
ER

PT J
AU Uhlir, V
   Urbanek, M
   Hladik, L
   Spousta, J
   Im, MY
   Fischer, P
   Eibagi, N
   Kan, JJ
   Fullerton, EE
   Sikola, T
AF Uhlir, V.
   Urbanek, M.
   Hladik, L.
   Spousta, J.
   Im, M-Y.
   Fischer, P.
   Eibagi, N.
   Kan, J. J.
   Fullerton, E. E.
   Sikola, T.
TI Dynamic switching of the spin circulation in tapered magnetic nanodisks
SO NATURE NANOTECHNOLOGY
LA English
DT Article
ID VORTEX CORE REVERSAL; PERMALLOY; EXCITATION; VORTICES; DRIVEN; STATE;
   DISKS; FIELD; DOTS
AB Magnetic vortices are characterized by the sense of in-plane magnetization circulation and by the polarity of the vortex core. With each having two possible states, there are four possible stable magnetization configurations that can be utilized for a multibit memory cell. Dynamic control of vortex core polarity has been demonstrated using both alternating and pulsed magnetic fields and currents. Here, we show controlled dynamic switching of spin circulation in vortices using nanosecond field pulses by imaging the process with full-field soft X-ray transmission microscopy. The dynamic reversal process is controlled by far-from-equilibrium gyrotropic precession of the vortex core, and the reversal is achieved at significantly reduced field amplitudes when compared with static switching. We further show that both the field pulse amplitude and duration required for efficient circulation reversal can be controlled by appropriate selection of the disk geometry.
C1 [Uhlir, V.; Eibagi, N.; Kan, J. J.; Fullerton, E. E.] Univ Calif San Diego, Ctr Magnet Recording Res, La Jolla, CA 92093 USA.
   [Uhlir, V.; Urbanek, M.; Spousta, J.; Sikola, T.] Brno Univ Technol, CEITEC BUT, Brno 61600, Czech Republic.
   [Urbanek, M.; Hladik, L.; Spousta, J.; Sikola, T.] Brno Univ Technol, Inst Engn Phys, Brno 61669, Czech Republic.
   [Im, M-Y.; Fischer, P.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Ctr Xray Opt, Berkeley, CA 94720 USA.
RP Uhlir, V (reprint author), Univ Calif San Diego, Ctr Magnet Recording Res, La Jolla, CA 92093 USA.
EM vojtech.uhlir@uh.cz
RI Fullerton, Eric/H-8445-2013; Sikola, Tomas/D-9875-2012; Urbanek,
   Michal/E-1136-2012; Fischer, Peter/A-3020-2010; Uhlir,
   Vojtech/E-6860-2011
OI Fullerton, Eric/0000-0002-4725-9509; Urbanek,
   Michal/0000-0003-0072-2073; Fischer, Peter/0000-0002-9824-9343; 
FU US Department of Energy (DOE), Office of Basic Energy Sciences
   [DE-SC0003678]; European Regional Development Fund [CEITEC -
   CZ.1.05/1.1.00/02.0068]; Grant Agency of the Czech Republic
   [P102/12/P443]; Office of Science, Office of Basic Energy Sciences,
   Materials Sciences and Engineering Division, of the US DOE
   [DE-AC02-05-CH11231]
FX The authors thank R. Descoteaux and O. Inac for technical help. The
   authors also thank M. Escobar and V. Lomakin for help with the FastMag
   simulations, R. Antos for useful discussions and J. Sapan for editing
   the manuscript. The research at UCSD was supported by the research
   programs of the US Department of Energy (DOE), Office of Basic Energy
   Sciences (award #DE-SC0003678), and the research at CEITEC BUT by the
   European Regional Development Fund (CEITEC - CZ.1.05/1.1.00/02.0068) and
   the Grant Agency of the Czech Republic (project no. P102/12/P443). The
   operation of the X-ray microscope was supported by the Director, Office
   of Science, Office of Basic Energy Sciences, Materials Sciences and
   Engineering Division, of the US DOE (contract no. DE-AC02-05-CH11231).
   Sample nanofabrication was supported by the company TESCAN.
NR 53
TC 48
Z9 48
U1 1
U2 80
PU NATURE PUBLISHING GROUP
PI LONDON
PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND
SN 1748-3387
J9 NAT NANOTECHNOL
JI Nat. Nanotechnol.
PD MAY
PY 2013
VL 8
IS 5
BP 341
EP 346
DI 10.1038/NNANO.2013.66
PG 6
WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary
SC Science & Technology - Other Topics; Materials Science
GA 140VQ
UT WOS:000318684800016
PM 23603985
ER

PT J
AU Jozwiak, C
   Park, CH
   Gotlieb, K
   Hwang, C
   Lee, DH
   Louie, SG
   Denlinger, JD
   Rotundu, CR
   Birgeneau, RJ
   Hussain, Z
   Lanzara, A
AF Jozwiak, Chris
   Park, Cheol-Hwan
   Gotlieb, Kenneth
   Hwang, Choongyu
   Lee, Dung-Hai
   Louie, Steven G.
   Denlinger, Jonathan D.
   Rotundu, Costel R.
   Birgeneau, Robert J.
   Hussain, Zahid
   Lanzara, Alessandra
TI Photoelectron spin-flipping and texture manipulation in a topological
   insulator
SO NATURE PHYSICS
LA English
DT Article
ID SINGLE DIRAC CONE; SURFACE
AB Recently discovered materials called three-dimensional topological insulators(1-5) constitute examples of symmetry-protected topological states in the absence of applied magnetic fields and cryogenic temperatures. A hallmark characteristic of these non-magnetic bulk insulators is their protected metallic Dirac fermion-like surface states. Electrons in these surface states are spin polarized with their spins governed by their momentum, resulting in a helical spin texture in momentum space(6). Spin- and angle-resolved photoemission spectroscopy has been the only tool capable of directly observing this central feature with simultaneous energy, momentum and spin sensitivity(6-12). By using an innovative photoelectron spectrometer(13) with a high-flux laser-based light source, we discovered a surprising property of these surface electrons. We found that the spin polarization of the resulting photoelectrons can be manipulated in three dimensions through selection of the light polarization. These effects are due to the spin-dependent interaction of the helical surface electrons with light, which originates from strong spin-orbit coupling. Our results illustrate unusual scenarios in which the spin polarization of photoelectrons is completely different from that of the originating initial states. The results also provide the basis for a source of highly spin-polarized electrons with tunable polarization direction.
C1 [Jozwiak, Chris; Denlinger, Jonathan D.; Hussain, Zahid] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Adv Light Source, Berkeley, CA 94720 USA.
   [Park, Cheol-Hwan; Lee, Dung-Hai; Louie, Steven G.; Birgeneau, Robert J.; Lanzara, Alessandra] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
   [Park, Cheol-Hwan] Seoul Natl Univ, Dept Phys & Astron, Seoul 151747, South Korea.
   [Park, Cheol-Hwan] Seoul Natl Univ, Ctr Theoret Phys, Seoul 151747, South Korea.
   [Gotlieb, Kenneth] Univ Calif Berkeley, Grad Grp Appl Sci & Technol, Berkeley, CA 94720 USA.
   [Hwang, Choongyu; Lee, Dung-Hai; Louie, Steven G.; Rotundu, Costel R.; Birgeneau, Robert J.; Lanzara, Alessandra] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94720 USA.
   [Birgeneau, Robert J.] Univ Calif Berkeley, Dept Mat Sci & Engn, Berkeley, CA 94720 USA.
RP Lanzara, A (reprint author), Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
EM ALanzara@lbl.gov
RI Park, Cheol-Hwan/A-1543-2009; 
OI Park, Cheol-Hwan/0000-0003-1584-6896; Rotundu,
   Costel/0000-0002-1571-8352
FU Office of Science, Office of Basic Energy Sciences, Division of
   Materials Sciences and Engineering, of the US Department of Energy
   [DE-AC02-05CH11231]; Office of Science, Office of Basic Energy Sciences,
   of the US Department of Energy [DE-AC02-05CH11231]
FX We thank G. Lebedev and W. Wan for work with the electron optics, W.
   Zhang, D. A. Siegel, C. L. Smallwood and T. Miller for useful
   discussions, H. Wang and R. A. Kaindl for advice with optics, and A.
   Bostwick for help with software development. This work was supported by
   the Director, Office of Science, Office of Basic Energy Sciences,
   Division of Materials Sciences and Engineering, of the US Department of
   Energy under Contract No. DE-AC02-05CH11231 (Lawrence Berkeley National
   Laboratory). Higher-photon-energy photoemission work was performed at
   the Advanced Light Source, Lawrence Berkeley National Laboratory, which
   is supported by the Director, Office of Science, Office of Basic Energy
   Sciences, of the US Department of Energy under Contract No.
   DE-AC02-05CH11231.
NR 30
TC 78
Z9 78
U1 9
U2 101
PU NATURE PUBLISHING GROUP
PI LONDON
PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND
SN 1745-2473
J9 NAT PHYS
JI Nat. Phys.
PD MAY
PY 2013
VL 9
IS 5
BP 293
EP 298
DI 10.1038/nphys2572
PG 6
WC Physics, Multidisciplinary
SC Physics
GA 138ZE
UT WOS:000318550200020
ER

PT J
AU Parameswaran, SA
   Turner, AM
   Arovas, DP
   Vishwanath, A
AF Parameswaran, Siddharth A.
   Turner, Ari M.
   Arovas, Daniel P.
   Vishwanath, Ashvin
TI Topological order and absence of band insulators at integer filling in
   non-symmorphic crystals
SO NATURE PHYSICS
LA English
DT Article
ID ENERGY-BANDS; HALDANE-GAP; SRCU2(BO3)(2); ANTIFERROMAGNET; SPACE; STATE
AB Band insulators appear in a crystalline system only when the filling-the number of electrons per unit cell and spin projection-is an integer. At fractional filling, an insulating phase that preserves all symmetries is a Mott insulator; that is, it is either gapless or, if gapped, exhibits fractionalized excitations and topological order. We raise the inverse question-at an integer filling is a band insulator always possible? Here we show that lattice symmetries may forbid a band insulator even at certain integer fillings, if the crystal is non-symmorphic-a property shared by most three-dimensional crystal structures. In these cases, one may infer the existence of topological order if the ground state is gapped and fully symmetric. This is demonstrated using a non-perturbative flux-threading argument, which has immediate applications to quantum spin systems and bosonic insulators in addition to electronic band structures in the absence of spin-orbit interactions.
C1 [Parameswaran, Siddharth A.; Vishwanath, Ashvin] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
   [Turner, Ari M.] Univ Amsterdam, Inst Theoret Phys, NL-1090 GL Amsterdam, Netherlands.
   [Arovas, Daniel P.] Univ Calif San Diego, Dept Phys, La Jolla, CA 92093 USA.
   [Vishwanath, Ashvin] Lawrence Berkeley Natl Labs, Div Mat Sci, Berkeley, CA 94720 USA.
RP Vishwanath, A (reprint author), Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
EM ashvinv@socrates.berkeley.edu
FU Simons Foundation; National Science Foundation at the Aspen Center for
   Physics through the Frustrated Magnets programme at the Kavli Institute
   for Theoretical Physics [1066293, PHY11-25915, DMR-1007028, DMR-1206728]
FX We thank I. Kimchi and D. Stamper-Kurn for collaboration on related
   work, R. Roy for many detailed conversations, M. Hermele, M. Oshikawa,
   S. Coh and M. Zaletel for stimulating discussions and M. Norman for
   valuable comments on the manuscript. This work is supported by the
   Simons Foundation (S.A.P. and A.V.) and by the National Science
   Foundation Grants No. 1066293 at the Aspen Center for Physics (S.A.P.,
   D.P.A., A.V.), PHY11-25915 through the Frustrated Magnets programme at
   the Kavli Institute for Theoretical Physics (S.A.P., A.V.), DMR-1007028
   (D.P.A.) and DMR-1206728 (A.V.).
NR 27
TC 44
Z9 44
U1 2
U2 29
PU NATURE PUBLISHING GROUP
PI LONDON
PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND
SN 1745-2473
EI 1745-2481
J9 NAT PHYS
JI Nat. Phys.
PD MAY
PY 2013
VL 9
IS 5
BP 299
EP 303
DI 10.1038/NPHYS2600
PG 5
WC Physics, Multidisciplinary
SC Physics
GA 138ZE
UT WOS:000318550200021
ER

PT J
AU Bragg-Sitton, S
   Barrett, K
   van Rooyen, I
   Hurley, D
   Khafizov, M
AF Bragg-Sitton, Shannon
   Barrett, Kristine
   van Rooyen, Isabella
   Hurley, David
   Khafizov, Marat
TI Studying silicon carbide for nuclear fuel cladding
SO NUCLEAR ENGINEERING INTERNATIONAL
LA English
DT Article
C1 [Bragg-Sitton, Shannon; Barrett, Kristine; van Rooyen, Isabella; Hurley, David; Khafizov, Marat] Idaho Natl Lab, Idaho Falls, ID 83415 USA.
RP Bragg-Sitton, S (reprint author), Idaho Natl Lab, 2525 Freemont Ave, Idaho Falls, ID 83415 USA.
EM shannon.bragg-sitton@inl.gov; kristine.barrett@inl.gov;
   isabella.vanrooyen@inl.gov; david.hurley@inl.gov; marat.khafizov@inl.gov
RI Khafizov, Marat/B-3744-2012
OI Khafizov, Marat/0000-0001-8171-3528
NR 0
TC 3
Z9 3
U1 4
U2 21
PU WILMINGTON PUBL
PI SIDCUP
PA WILMINGTON HOUSE, MAIDSTONE RD, FOOTS CRAY, SIDCUP DA14 SHZ, KENT,
   ENGLAND
SN 0029-5507
J9 NUCL ENG INT
JI Nucl. Eng. Int.
PD MAY
PY 2013
VL 58
IS 706
BP 37
EP 40
PG 4
WC Nuclear Science & Technology
SC Nuclear Science & Technology
GA 146PX
UT WOS:000319104100010
ER

PT J
AU Cambray, G
   Guimaraes, JC
   Mutalik, VK
   Lam, C
   Mai, QA
   Thimmaiah, T
   Carothers, JM
   Arkin, AP
   Endy, D
AF Cambray, Guillaume
   Guimaraes, Joao C.
   Mutalik, Vivek K.
   Lam, Colin
   Quynh-Anh Mai
   Thimmaiah, Tim
   Carothers, James M.
   Arkin, Adam P.
   Endy, Drew
TI Measurement and modeling of intrinsic transcription terminators
SO NUCLEIC ACIDS RESEARCH
LA English
DT Article
ID ESCHERICHIA-COLI RNA; GENE-EXPRESSION; TRANSLATION INITIATION;
   MUTATIONAL ANALYSIS; BACTERIAL GENOMES; STEM-LOOP; POLYMERASE;
   PREDICTION; ELEMENTS; REGULATORS
AB The reliable forward engineering of genetic systems remains limited by the ad hoc reuse of many types of basic genetic elements. Although a few intrinsic prokaryotic transcription terminators are used routinely, termination efficiencies have not been studied systematically. Here, we developed and validated a genetic architecture that enables reliable measurement of termination efficiencies. We then assembled a collection of 61 natural and synthetic terminators that collectively encode termination efficiencies across an similar to 800-fold dynamic range within Escherichia coli. We simulated co-transcriptional RNA folding dynamics to identify competing secondary structures that might interfere with terminator folding kinetics or impact termination activity. We found that structures extending beyond the core terminator stem are likely to increase terminator activity. By excluding terminators encoding such context-confounding elements, we were able to develop a linear sequence-function model that can be used to estimate termination efficiencies (r = 0.9, n = 31) better than models trained on all terminators (r = 0.67, n = 54). The resulting systematically measured collection of terminators should improve the engineering of synthetic genetic systems and also advance quantitative modeling of transcription termination.
C1 [Cambray, Guillaume; Guimaraes, Joao C.; Mutalik, Vivek K.; Lam, Colin; Quynh-Anh Mai; Arkin, Adam P.; Endy, Drew] BIOFAB Int Open Facil Adv Biotechnol BIOFAB, Emeryville, CA 94608 USA.
   [Cambray, Guillaume; Mutalik, Vivek K.; Lam, Colin; Quynh-Anh Mai; Arkin, Adam P.] Univ Calif Berkeley, Calif Inst Quantitat Biosci, Berkeley, CA 94720 USA.
   [Guimaraes, Joao C.; Thimmaiah, Tim; Arkin, Adam P.] Univ Calif Berkeley, Dept Bioengn, Berkeley, CA 94720 USA.
   [Guimaraes, Joao C.] Univ Minho, Dept Informat, Comp Sci & Technol Ctr, P-4700 Braga, Portugal.
   [Mutalik, Vivek K.; Carothers, James M.; Arkin, Adam P.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Phys Biosci Div, Berkeley, CA 94720 USA.
   [Endy, Drew] Stanford Univ, Dept Bioengn, Stanford, CA 94305 USA.
RP Endy, D (reprint author), BIOFAB Int Open Facil Adv Biotechnol BIOFAB, 5885 Hollis St, Emeryville, CA 94608 USA.
EM aparkin@lbl.gov; endy@stanford.edu
RI Guimaraes, Joao/A-8572-2012; Cambray, Guillaume/A-9476-2015; Arkin,
   Adam/A-6751-2008; 
OI Guimaraes, Joao/0000-0002-1664-472X; Cambray,
   Guillaume/0000-0003-0087-2469; Arkin, Adam/0000-0002-4999-2931; Endy,
   Drew/0000-0001-6952-8098; Mutalik, Vivek/0000-0001-7934-0400
FU BIOFAB [NSF] [EEC 0946510]; Human Frontier Science Program
   [LT000873/2011-L]; Bettencourt Schueller Foundation; Portuguese Fundacao
   para a Ciencia e a Tecnologia [SFRH/BD/47819/2008]; Synthetic Biology
   Engineering Research Center [NSF] [04-570/0540879]; Office of Science,
   Office of Biological and Environmental Research, U.S. 85 Department of
   Energy [DE-AC02-05CH11231]; BIOFAB project at Stanford & Cal [US
   National Science Foundation]
FX BIOFAB [NSF Award No. EEC 0946510 plus unrestricted gifts from Genencor,
   Inc., Agilent, Inc. and DSM, Inc.]; Human Frontier Science Program
   (LT000873/2011-L) and the Bettencourt Schueller Foundation ( to G. C.);
   Portuguese Fundacao para a Ciencia e a Tecnologia [SFRH/BD/47819/2008 to
   J.C.G.]; Synthetic Biology Engineering Research Center [NSF Award No.
   04-570/0540879 to A. P. A. and D. E.]. This work was conducted at JBEI,
   which is supported by the Office of Science, Office of Biological and
   Environmental Research, U.S. 85 Department of Energy [Contract No.
   DE-AC02-05CH11231]. Funding for open access charge: BIOFAB project at
   Stanford & Cal [US National Science Foundation].
NR 50
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U1 1
U2 27
PU OXFORD UNIV PRESS
PI OXFORD
PA GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND
SN 0305-1048
J9 NUCLEIC ACIDS RES
JI Nucleic Acids Res.
PD MAY
PY 2013
VL 41
IS 9
BP 5139
EP 5148
DI 10.1093/nar/gkt163
PG 10
WC Biochemistry & Molecular Biology
SC Biochemistry & Molecular Biology
GA 139GM
UT WOS:000318570000040
PM 23511967
ER

PT J
AU Yao, L
   Cairney, JM
   Gault, B
   Zhu, C
   Ringer, SP
AF Yao, L.
   Cairney, J. M.
   Gault, B.
   Zhu, C.
   Ringer, S. P.
TI Correlating spatial, temporal and chemical information in atom probe
   data: new insights from multiple evaporation in microalloyed steels
SO PHILOSOPHICAL MAGAZINE LETTERS
LA English
DT Article
DE atom probe microscopy; field evaporation; clustering; multiple detector
   events (MDEs) and correlation analysis
ID POSITION-SENSITIVE DETECTOR; LOCAL MAGNIFICATION; MASS-SPECTRA;
   TOMOGRAPHY; RECONSTRUCTION; MICROANALYSIS; OPTIMIZATION; TEMPERATURE;
   BEHAVIOR; AL
AB Multiple detector events (MDEs) in atom probe data, which are the result of simultaneous field evaporation of atomic species, have been investigated by correlating the temporal, chemical and spatial information from the raw detector data. We have applied this analysis to the investigation of microalloyed steels containing atomic clusters of Nb, C and N. As the degree of clustering increases, so does the tendency for simultaneous field evaporation of the clustered atoms. Although local magnification effects cause spatial distortions thereby lowering the spatial resolution of these ions specifically, strong correlations between their time of field evaporation and their chemistry are observed. Highlighting simultaneously field-evaporated atomic species is demonstrated to be a useful way to identify and visualize preferred solutesolute interactions. The timechemical correlation introduced here is conceptually different to conventional spatial-chemical based analyses, but can also reflect changes in the atomic arrangements in materials.
C1 [Yao, L.; Cairney, J. M.; Gault, B.; Zhu, C.; Ringer, S. P.] Univ Sydney, Australian Ctr Microscopy & Microanal, Sydney, NSW 2006, Australia.
   [Yao, L.] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA.
   [Cairney, J. M.; Gault, B.; Zhu, C.; Ringer, S. P.] Univ Sydney, Sch Aerosp Mech & Mechatron Engn, Sydney, NSW 2006, Australia.
   [Gault, B.] McMaster Univ, Dept Mat Sci & Engn, Hamilton, ON L8S 4L8, Canada.
RP Ringer, SP (reprint author), Univ Sydney, Australian Ctr Microscopy & Microanal, Sydney, NSW 2006, Australia.
EM simon.ringer@sydney.edu.au
OI Gault, Baptiste/0000-0002-4934-0458; Cairney, Julie/0000-0003-4564-2675
FU Australian Research Council; BlueScope Steel Pty. Ltd. (BSL)
FX This research was partly supported by the Australian Research Council
   and BlueScope Steel Pty. Ltd. (BSL). The authors would like to
   gratefully thank to the fruitful discussions and encouragement from Dr
   Frank Barbaro, and Messrs. Jim Williams and Chris Kilmore of BSL.
   Technical and scientific support from the Australian Microscopy &
   Microanalysis Research Facility (AMMRF - ammrf.org.au) node at the
   University of Sydney is also acknowledged gratefully, particularly
   Messrs Alex La Fontaine and Kelvin Xie.
NR 34
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U1 0
U2 18
PU TAYLOR & FRANCIS LTD
PI ABINGDON
PA 4 PARK SQUARE, MILTON PARK, ABINGDON OX14 4RN, OXON, ENGLAND
SN 0950-0839
J9 PHIL MAG LETT
JI Philos. Mag. Lett.
PD MAY 1
PY 2013
VL 93
IS 5
BP 299
EP 306
DI 10.1080/09500839.2013.771823
PG 8
WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical
   Engineering; Physics, Applied; Physics, Condensed Matter
SC Materials Science; Metallurgy & Metallurgical Engineering; Physics
GA 141YZ
UT WOS:000318763900006
ER

PT J
AU Jones, JS
   Sharon, JA
   Mohammed, JS
   Hemker, KJ
AF Jones, Justin S.
   Sharon, John A.
   Mohammed, Jelila S.
   Hemker, Kevin J.
TI Small-scale mechanical characterization of space-exposed fluorinated
   ethylene propylene recovered from the Hubble Space Telescope
SO POLYMER TESTING
LA English
DT Article
DE Space-exposure; Small-scale tensile testing; Chain scission; Digital
   image correlation; Fluorinated ethylene propylene
ID TEFLON(R) FEP; POLY(TETRAFLUOROETHYLENE-CO-HEXAFLUOROPROPYLENE);
   DEGRADATION; IRRADIATION; POLYMER
AB Multi-layer insulation (MLI) blankets from the Hubble Space Telescope have been recovered during the last servicing mission, after 19.1 years of on-orbit service. Based on testing and analysis of returned insulation material from earlier Hubble servicing missions, the space environment is known to have detrimental effects on the mechanical properties. The most recently retrieved MLI blankets were highly degraded with many cracks, limiting the material available for full-scale mechanical testing. As a result, micro-tensile experiments have been performed to characterize the effect of space exposure on the mechanical response of the outermost layer of the MLI This outer layer, 127 mu m thick fluorinated ethylene propylene with a 100 nm thick vapor deposited aluminum reflective coating, maintained significant tensile ductility but exhibited a degradation of strength that scales with severity of space exposure. This change in properties is attributed to damage from incident solar flux, atomic oxygen damage and thermal cycling. Published by Elsevier Ltd.
C1 [Jones, Justin S.; Mohammed, Jelila S.] NASA, Mat Engn Branch Code 541, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA.
   [Sharon, John A.] Sandia Natl Labs, Albuquerque, NM 87185 USA.
   [Hemker, Kevin J.] Johns Hopkins Univ, Dept Mech Engn, Baltimore, MD 21218 USA.
RP Jones, JS (reprint author), NASA, Mat Engn Branch Code 541, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA.
EM justin.s.jones@nasa.gov; jasharo@sandia.gov; jelila.s.mohammed@nasa.gov;
   hemker@jhu.edu
NR 18
TC 0
Z9 0
U1 3
U2 12
PU ELSEVIER SCI LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
SN 0142-9418
J9 POLYM TEST
JI Polym. Test
PD MAY
PY 2013
VL 32
IS 3
BP 602
EP 607
DI 10.1016/j.polymertesting.2013.02.004
PG 6
WC Materials Science, Characterization & Testing; Polymer Science
SC Materials Science; Polymer Science
GA 136RQ
UT WOS:000318381500020
ER

PT J
AU Krawczyk, CM
   Richards, GT
   Mehta, SS
   Vogeley, MS
   Gallagher, SC
   Leighly, KM
   Ross, NP
   Schneider, DP
AF Krawczyk, Coleman M.
   Richards, Gordon T.
   Mehta, Sajjan S.
   Vogeley, Michael S.
   Gallagher, S. C.
   Leighly, Karen M.
   Ross, Nicholas P.
   Schneider, Donald P.
TI MEAN SPECTRAL ENERGY DISTRIBUTIONS AND BOLOMETRIC CORRECTIONS FOR
   LUMINOUS QUASARS
SO ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES
LA English
DT Article
DE catalogs; infrared: galaxies; methods: statistical; quasars: general
ID ACTIVE GALACTIC NUCLEI; DIGITAL-SKY-SURVEY; RADIO-QUIET QUASARS;
   SUPERMASSIVE BLACK-HOLES; X-RAY OBSERVATIONS; C IV EMISSION; TYPE-1
   QUASARS; PHOTOMETRIC SYSTEM; SEYFERT-GALAXIES; ACCRETION MODELS
AB We explore the mid-infrared (mid-IR) through ultraviolet (UV) spectral energy distributions (SEDs) of 119,652 luminous broad-lined quasars with 0.064 < z < 5.46 using mid-IR data from Spitzer and WISE, near-infrared data from the Two Micron All Sky Survey and UKIDSS, optical data from the Sloan Digital Sky Survey, and UV data from the Galaxy Evolution Explorer. The mean SED requires a bolometric correction (relative to 2500 angstrom) of BC2500 (angstrom) = 2.75 +/- 0.40 using the integrated light from 1 mu m-2 keV, and we further explore the range of bolometric corrections exhibited by individual objects. In addition, we investigate the dependence of the mean SED on various parameters, particularly the UV luminosity for quasars with 0.5 less than or similar to z less than or similar to 3 and the properties of the UV emission lines for quasars with z greater than or similar to 1.6; the latter is a possible indicator of the strength of the accretion disk wind, which is expected to be SED-dependent. Luminosity-dependent mean SEDs show that, relative to the high-luminosity SED, low-luminosity SEDs exhibit a harder (bluer) far-UV spectral slope (alpha(UV)), a redder optical continuum, and less hot dust. Mean SEDs constructed instead as a function of UV emission line properties reveal changes that are consistent with known Principal Component Analysis trends. A potentially important contribution to the bolometric correction is the unseen extreme UV (EUV) continuum. Our work suggests that lower-luminosity quasars and/or quasars with disk-dominated broad emission lines may require an extra continuum component in the EUV that is not present (or much weaker) in high-luminosity quasars with strong accretion disk winds. As such, we consider four possible models and explore the resulting bolometric corrections. Understanding these various SED-dependent effects will be important for accurate determination of quasar accretion rates.
C1 [Krawczyk, Coleman M.; Richards, Gordon T.; Mehta, Sajjan S.; Vogeley, Michael S.] Drexel Univ, Dept Phys, Philadelphia, PA 19104 USA.
   [Gallagher, S. C.] Univ Western Ontario, Dept Phys & Astron, London, ON N6A 3K7, Canada.
   [Leighly, Karen M.] Univ Oklahoma, Homer L Dodge Dept Phys & Astron, Norman, OK 73019 USA.
   [Ross, Nicholas P.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
   [Schneider, Donald P.] Penn State Univ, Dept Astron & Astrophys, University Pk, PA 16802 USA.
   [Schneider, Donald P.] Penn State Univ, Inst Gravitat & Cosmos, University Pk, PA 16802 USA.
RP Krawczyk, CM (reprint author), Drexel Univ, Dept Phys, 3141 Chestnut St, Philadelphia, PA 19104 USA.
OI Mehta, Sajjan/0000-0002-7764-3886
FU Alfred P. Sloan Fellowship; Alexander von Humboldt Research Fellowship;
   NASA [NNX08AJ27G, NNX10AF74G, NNX12AI49G]
FX G.T.R. acknowledges support from an Alfred P. Sloan and an Alexander von
   Humboldt Research Fellowship along with NASA grants NNX08AJ27G,
   NNX10AF74G, and NNX12AI49G. This work is based in part on observations
   made with the Spitzer Space Telescope, which is operated by the Jet
   Propulsion Laboratory, California Institute of Technology under a
   contract with NASA. Support for this work was provided by NASA through
   an award issued by JPL/Caltech. We thank both David Schiminovich and
   David Hogg for providing GALEX forced photometry and both Anna Sajina
   and the referee for critical review of the manuscript.
NR 89
TC 34
Z9 34
U1 1
U2 4
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0067-0049
EI 1538-4365
J9 ASTROPHYS J SUPPL S
JI Astrophys. J. Suppl. Ser.
PD MAY
PY 2013
VL 206
IS 1
AR 4
DI 10.1088/0067-0049/206/1/4
PG 19
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 139BK
UT WOS:000318556300004
ER

PT J
AU Cotten, C
   Reed, JL
AF Cotten, Cameron
   Reed, Jennifer L.
TI Constraint-based strain design using continuous modifications (CosMos)
   of flux bounds finds new strategies for metabolic engineering
SO BIOTECHNOLOGY JOURNAL
LA English
DT Article
DE Constraint-based modeling; Enzyme expression; Flux balance analysis;
   OptKnock; Strain design
ID ESCHERICHIA-COLI K-12; KNOCKOUT STRATEGIES; PERTURBATIONS; FRAMEWORK;
   NETWORKS; GENE; RECONSTRUCTION; OVERPRODUCTION; OPTIMIZATION; OPTIMALITY
AB In recent years, a growing number of metabolic engineering strain design techniques have employed constraint-based modeling to determine metabolic and regulatory network changes which are needed to improve chemical production. These methods use systems-level analysis of metabolism to help guide experimental efforts by identifying deletions, additions, downregulations, and upregulations of metabolic genes that will increase biological production of a desired metabolic product. In this work, we propose a new strain design method with continuous modifications (CosMos) that provides strategies for deletions, downregulations, and upregulations of fluxes that will lead to the production of the desired products. The method is conceptually simple and easy to implement, and can provide additional strategies over current approaches. We found that the method was able to find strain design strategies that required fewer modifications and had larger predicted yields than strategies from previous methods in example and genome-scale networks. Using CosMos, we identified modification strategies for producing a variety of metabolic products, compared strategies derived from Escherichia coli and Saccharomyces cerevisiae metabolic models, and examined how imperfect implementation may affect experimental outcomes. This study gives a powerful and flexible technique for strain engineering and examines some of the unexpected outcomes that may arise when strategies are implemented experimentally.
C1 [Cotten, Cameron; Reed, Jennifer L.] Univ Wisconsin, Dept Chem & Biol Engn, Madison, WI USA.
   [Cotten, Cameron; Reed, Jennifer L.] Univ Wisconsin, Great Lakes Bioenergy Res Ctr, Madison, WI USA.
RP Reed, JL (reprint author), 1415 Engn Dr, Madison, WI 53706 USA.
EM reed@engr.wisc.edu
RI Reed, Jennifer/E-5137-2011
FU United States Department of Energy Great Lakes Bioenergy Research Center
   (DOE BER Office of Science) [DE-FC02-07ER64494]; 3M Foundation
FX The authors wish to acknowledge James Leutdke, Jeff Linderoth, and
   Christos Maravelias for helpful discussions. This work was funded by the
   United States Department of Energy Great Lakes Bioenergy Research Center
   (DOE BER Office of Science DE-FC02-07ER64494). C. C. is also supported
   by a fellowship from the 3M Foundation. C. C. implemented the models and
   approach, performed the analysis, analyzed the data, and drafted the
   manuscript. J. L. R. conceived of the study, participated in its design
   and coordination, and helped to analyze the data and draft the
   manuscript.
NR 27
TC 15
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U1 0
U2 21
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 1860-6768
J9 BIOTECHNOL J
JI Biotechnol. J.
PD MAY
PY 2013
VL 8
IS 5
SI SI
BP 595
EP 604
DI 10.1002/biot.201200316
PG 10
WC Biochemical Research Methods; Biotechnology & Applied Microbiology
SC Biochemistry & Molecular Biology; Biotechnology & Applied Microbiology
GA 136HL
UT WOS:000318352900010
PM 23703951
ER

PT J
AU Flowers, D
   Thompson, RA
   Birdwell, D
   Wang, TW
   Trinh, CT
AF Flowers, David
   Thompson, R. Adam
   Birdwell, Douglas
   Wang, Tsewei
   Trinh, Cong T.
TI SMET: Systematic multiple enzyme targeting - a method to rationally
   design optimal strains for target chemical overproduction
SO BIOTECHNOLOGY JOURNAL
LA English
DT Article
DE Elementary mode analysis; Ensemble metabolic modeling; Minimal cut set;
   Rational strain design; Systematic multiple enzyme targeting (SMET)
ID METABOLIC-CONTROL ANALYSIS; IN-SILICO DESIGN; ESCHERICHIA-COLI;
   ELEMENTARY MODES; MICROBIAL-PRODUCTION; KNOCKOUT STRATEGIES; ADAPTIVE
   EVOLUTION; PATHWAY ANALYSIS; NETWORKS; FLUX
AB Identifying multiple enzyme targets for metabolic engineering is very critical for redirecting cellular metabolism to achieve desirable phenotypes, e. g., overproduction of a target chemical. The challenge is to determine which enzymes and how much of these enzymes should be manipulated by adding, deleting, under-, and/or over-expressing associated genes. In this study, we report the development of a systematic multiple enzyme targeting method (SMET), to rationally design optimal strains for target chemical overproduction. The SMET method combines both elementary mode analysis and ensemble metabolic modeling to derive SMET metrics including l-values and c-values that can identify rate-limiting reaction steps and suggest which enzymes and how much of these enzymes to manipulate to enhance product yields, titers, and productivities. We illustrated, tested, and validated the SMET method by analyzing two networks, a simple network for concept demonstration and an Escherichia coli metabolic network for aromatic amino acid overproduction. The SMET method could systematically predict simultaneous multiple enzyme targets and their optimized expression levels, consistent with experimental data from the literature, without performing an iterative sequence of single-enzyme perturbation. The SMET method was much more efficient and effective than single-enzyme perturbation in terms of computation time and finding improved solutions.
C1 [Flowers, David; Wang, Tsewei; Trinh, Cong T.] Univ Tennessee, Dept Chem & Biomol Engn, Knoxville, TN 37920 USA.
   [Thompson, R. Adam; Trinh, Cong T.] Univ Tennessee, Bredesen Ctr Interdisciplinary Res & Grad Educ, Knoxville, TN 37920 USA.
   [Thompson, R. Adam; Trinh, Cong T.] Oak Ridge Natl Lab, Oak Ridge, TN USA.
   [Birdwell, Douglas] Univ Tennessee, Dept Elect Engn & Comp Sci, Knoxville, TN 37920 USA.
RP Trinh, CT (reprint author), Univ Tennessee, 1512 Middle Dr,R432, Knoxville, TN 37920 USA.
EM ctrinh@utk.edu
RI Trinh, Cong/H-5300-2012
FU University of Tennessee, Knoxville; Bioenergy Science Center (BESC)
   [DE-PS02-06ER64304]; DOE
FX We acknowledged the Newton HPC Program at the University of Tennessee,
   Knoxville for using the supercomputing machines. C.T.T. acknowledged the
   laboratory start-up, SEERC, and JDRD seed funds from the University of
   Tennessee, Knoxville and a grant (DE-PS02-06ER64304) from the Bioenergy
   Science Center (BESC), a DOE-Funded Bioenergy Center. D.F., T.W., D.B.,
   C.T.T. designed experiments. D.F. and R.A.T. performed the experiments.
   D.F., R.A.T., T.W., D.B., and C.T.T. analyzed the data. C.T.T. wrote the
   paper. All authors read, edited, and approved the paper.
NR 81
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U2 24
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 1860-6768
J9 BIOTECHNOL J
JI Biotechnol. J.
PD MAY
PY 2013
VL 8
IS 5
SI SI
BP 605
EP 618
DI 10.1002/biot.201200233
PG 14
WC Biochemical Research Methods; Biotechnology & Applied Microbiology
SC Biochemistry & Molecular Biology; Biotechnology & Applied Microbiology
GA 136HL
UT WOS:000318352900011
PM 23613435
ER

PT J
AU Vu, TT
   Hill, EA
   Kucek, LA
   Konopka, AE
   Beliaev, AS
   Reed, JL
AF Vu, Trang T.
   Hill, Eric A.
   Kucek, Leo A.
   Konopka, Allan E.
   Beliaev, Alexander S.
   Reed, Jennifer L.
TI Computational evaluation of Synechococcus sp PCC 7002 metabolism for
   chemical production
SO BIOTECHNOLOGY JOURNAL
LA English
DT Article
DE Biofuels; Cyanobacteria; Dark-anoxic; Metabolic engineering;
   Photoautotrophic
ID FLUX BALANCE ANALYSIS; SP PCC-7002; PHOTOAUTOTROPHIC METABOLISM;
   ESCHERICHIA-COLI; HIGH-LIGHT; CYANOBACTERIA; PERTURBATIONS; OPTIMALITY;
   GROWTH; ACID
AB Cyanobacteria are ideal metabolic engineering platforms for carbon-neutral biotechnology because they directly convert CO2 to a range of valuable products. In this study, we present a computational assessment of biochemical production in Synechococcus sp. PCC 7002 (Synechococcus 7002), a fast growing cyanobacterium whose genome has been sequenced, and for which genetic modification methods have been developed. We evaluated the maximum theoretical yields (mol product per mol CO2 or mol photon) of producing various chemicals under photoautotrophic and dark conditions using a genome-scale metabolic model of Synechococcus 7002. We found that the yields were lower under dark conditions, compared to photoautotrophic conditions, due to the limited amount of energy and reductant generated from glycogen. We also examined the effects of photon and CO2 limitations on chemical production under photoautotrophic conditions. In addition, using various computational methods such as minimization of metabolic adjustment (MOMA), relative metabolic change (RELATCH), and OptORF, we identified gene-knockout mutants that are predicted to improve chemical production under photoautotrophic and/or dark anoxic conditions. These computational results are useful for metabolic engineering of cyanobacteria to synthesize value-added products.
C1 [Vu, Trang T.; Reed, Jennifer L.] Univ Wisconsin, Dept Chem & Biol Engn, Madison, WI USA.
   [Hill, Eric A.; Kucek, Leo A.; Konopka, Allan E.; Beliaev, Alexander S.] Pacific NW Natl Lab, Div Biol Sci, Richland, WA 99352 USA.
RP Reed, JL (reprint author), 3639 Engn Hall,1415 Engn Dr, Madison, WI 53706 USA.
EM reed@engr.wisc.edu
RI Reed, Jennifer/E-5137-2011; Beliaev, Alexander/E-8798-2016
OI Beliaev, Alexander/0000-0002-6766-4632
FU Genomic Science Program (GSP), Office of Biological and Environmental
   Research (OBER), U.S. Department of Energy; U.S. Department of Energy
   [DE-SC0008103]
FX The authors wish to acknowledge Margarethe Serres (from the Marine
   Biological Laboratory) for providing us the updated genome annotations
   for Synechococcus 7002. We also thank Joonhoon Kim for his helpful
   discussion of RELATCH and OptORF methods. This research was supported by
   the Genomic Science Program (GSP), Office of Biological and
   Environmental Research (OBER), U.S. Department of Energy, and is a
   contribution of the PNNL Biofuels Scientific Focus Area (BSFA).
   Additional support for this research was provided by a grant from the
   U.S. Department of Energy (DE-SC0008103).
NR 42
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U1 2
U2 39
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 1860-6768
J9 BIOTECHNOL J
JI Biotechnol. J.
PD MAY
PY 2013
VL 8
IS 5
SI SI
BP 619
EP 630
DI 10.1002/biot.201200315
PG 12
WC Biochemical Research Methods; Biotechnology & Applied Microbiology
SC Biochemistry & Molecular Biology; Biotechnology & Applied Microbiology
GA 136HL
UT WOS:000318352900012
PM 23613453
ER

PT J
AU Kochendorfer, J
   Meyers, TP
   Frank, JM
   Massman, WJ
   Heuer, MW
AF Kochendorfer, John
   Meyers, Tilden P.
   Frank, John M.
   Massman, William J.
   Heuer, Mark W.
TI Reply to the Comment by Mauder on "How Well Can We Measure the Vertical
   Wind Speed? Implications for Fluxes of Energy and Mass"
SO BOUNDARY-LAYER METEOROLOGY
LA English
DT Editorial Material
DE Angle-of-attack error; Cosine error; Eddy covariance; Energy balance
   closure; Sonic anemometer; Transducer shadowing
ID ANEMOMETER (CO)SINE RESPONSE; SONIC ANEMOMETER; ERRORS
AB In Kochendorfer et al. (Boundary-Layer Meteorol 145:383-398, 2012, hereafter K2012) the vertical wind speed measured by a non-orthogonal three-dimensional sonic anemometer was shown to be underestimated by 12 %. Turbulent statistics and eddy-covariance fluxes estimated using were also affected by this underestimate in . Methodologies used in K2012 are clarified here in response to Mauder's comment. In addition, further analysis of the K2012 study is presented to help address questions raised in the comment. Specific responses are accompanied with examples of time series, calculated correlation coefficients, and additional explanation of the K2012 methods and assumptions. The discussion and analysis included in the comment and in this response do not affect the validity of the methods or conclusions presented in K2012.
C1 [Kochendorfer, John; Meyers, Tilden P.; Heuer, Mark W.] NOAA Atmospher Turbulence & Diffus Div, Oak Ridge, TN USA.
   [Frank, John M.; Massman, William J.] US Forest Serv, Ft Collins, CO USA.
   [Heuer, Mark W.] Oak Ridge Associated Univ, Oak Ridge, TN USA.
RP Kochendorfer, J (reprint author), NOAA Atmospher Turbulence & Diffus Div, Oak Ridge, TN USA.
EM john.kochendorfer@noaa.gov
RI Kochendorfer, John/K-2680-2012; Meyers, Tilden/C-6633-2016
OI Kochendorfer, John/0000-0001-8436-2460; 
NR 12
TC 1
Z9 1
U1 0
U2 10
PU SPRINGER
PI DORDRECHT
PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS
SN 0006-8314
J9 BOUND-LAY METEOROL
JI Bound.-Layer Meteor.
PD MAY
PY 2013
VL 147
IS 2
BP 337
EP 345
DI 10.1007/s10546-012-9792-8
PG 9
WC Meteorology & Atmospheric Sciences
SC Meteorology & Atmospheric Sciences
GA 138MF
UT WOS:000318512000009
ER

PT J
AU Leung, K
AF Leung, Kevin
TI Two-electron reduction of ethylene carbonate: A quantum chemistry
   re-examination of mechanisms
SO CHEMICAL PHYSICS LETTERS
LA English
DT Article
ID SOLID-ELECTROLYTE INTERPHASE; LITHIUM-ION BATTERIES; DENSITY-FUNCTIONAL
   THEORY; MOLECULAR-DYNAMICS; VINYLENE CARBONATE; ELECTROCHEMICAL
   REDUCTION; PROPYLENE CARBONATE; SURFACE-CHEMISTRY; SEI FORMATION;
   GRAPHITE
AB Passivating solid-electrolyte interphase (SE!) films arising from electrolyte decomposition on low-voltage lithium ion battery anode surfaces are critical for battery operations. We review the recent theoretical literature on electrolyte decomposition and emphasize the modeling work on two-electron reduction of ethylene carbonate (EC, a key battery organic solvent). One of the two-electron pathways, which releases CO gas, is re-examined using simple quantum chemistry calculations. Excess electrons are shown to preferentially attack EC in the order (broken EC-) > (intact EC-) > EC. This confirms the viability of two electron processes and emphasizes that they need to be considered when interpreting SEI experiments. A speculative estimate of the crossover between one- and two-electron regimes under a homogeneous reaction zone approximation is proposed. (C) 2012 Elsevier B.V. All rights reserved.
C1 Sandia Natl Labs, Albuquerque, NM 87185 USA.
RP Leung, K (reprint author), Sandia Natl Labs, MS 1415, Albuquerque, NM 87185 USA.
EM kleung@sandia.gov
FU US Department of Energy's National Nuclear Security Administration
   [DE-AC04-94AL85000]; Office of Science of the US Department of Energy
   [DE-AC02-05CH11231]; Department of Energy [DE-PI0000012]
FX We thank Leah Appelhans, Yue Qi, Oleg Borodin, John Sullivan, Nick
   Hudak, Kevin Zavadil, Rick Muller, and David Rogers. Sandia National
   Laboratories is a multiprogram laboratory managed and operated by Sandia
   Corporation, a wholly owned subsidiary of Lockheed Martin Corporation,
   for the US Department of Energy's National Nuclear Security
   Administration under contract DE-AC04-94AL85000. This research used
   resources of the National Energy Research Scientific Computing Center,
   which is supported by the Office of Science of the US Department of
   Energy under Contract No. DE-AC02-05CH11231. KL is partially supported
   by the Department of Energy under Award Number DE-PI0000012.
NR 50
TC 51
Z9 51
U1 5
U2 87
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0009-2614
J9 CHEM PHYS LETT
JI Chem. Phys. Lett.
PD MAY 1
PY 2013
VL 568
BP 1
EP 8
DI 10.1016/j.cplett.2012.08.022
PG 8
WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical
SC Chemistry; Physics
GA 135WB
UT WOS:000318320300001
ER

PT J
AU Aguila, D
   Barrios, LA
   Velasco, V
   Arnedo, L
   Aliaga-Alcalde, N
   Menelaou, M
   Teat, SJ
   Roubeau, O
   Luis, F
   Aromi, G
AF Aguila, David
   Barrios, Leoni A.
   Velasco, Veronica
   Arnedo, Leticia
   Aliaga-Alcalde, Nuria
   Menelaou, Melita
   Teat, Simon J.
   Roubeau, Olivier
   Luis, Fernando
   Aromi, Guillem
TI Lanthanide Contraction within a Series of Asymmetric Dinuclear [Ln(2)]
   Complexes
SO CHEMISTRY-A EUROPEAN JOURNAL
LA English
DT Article
DE contraction; lanthanides; luminescence; magnetic properties; X-ray
   diffraction
ID SINGLE-MOLECULE-MAGNET; ANISOTROPIC BARRIER; CRYSTAL-STRUCTURE;
   LUMINESCENT; LIGANDS; CONSTANTS; BLOCKING; BEHAVIOR; DESIGN; NUMBER
AB A complete isostructural series of dinuclear asymmetric lanthanide complexes has been synthesized by using the ligand 6-[3-oxo-3-(2-hydroxyphenyl)propionyl]pyridine-2-carboxylic acid (H3L). All complexes have the formula [Ln(2)(HL)(2)(H2L)(NO3)(py)(H2O)] (Ln = La (1), Ce (2), Pr (3), Nd (4), Sm (5), Eu (6), Gd (7), Tb (8), Dy (9), Ho (10), Er (11), Tm (12), Yb (13), Lu (14), Y (15); py = pyridine). Complexes of La to Yb and Y have been crystallographically characterized to reveal that the two metal ions are encapsulated within two distinct coordination environments of differing size. Whereas one site maintains the coordination number (nine) through the whole series, the other one increases from nine to ten owing to a change in the coordination mode of an NO3- ligand. This series offers a unique opportunity to study in detail the lanthanide contraction within complexes of more than one metal. This analysis shows that various representative parameters proportional to this contraction follow a quadratic decay as a function of the number n of f electrons. Slater's model for the atomic radii has been used to extract, from these decays, the shielding constant of 4f electrons. The average of O center dot center dot center dot O distances within the coordination polyhedra shared by both metals and of the Ln center dot center dot center dot Ln separations follow also a quadratic decay, therefore showing that such dependence holds also for parameters that receive the contribution of two lanthanide ions simultaneously. The magnetic behavior has been studied for all nondiamagnetic complexes. It reveals the effect of the spin-orbit coupling and a weak antiferromagnetic interaction between both metals. Photoluminescent studies of all the complexes in the series reveal a single broad emission band in the visible region, which is related to the coordinated ligand. On the other hand, the Nd, Er, and Yb complexes show features in the near-IR region due to metal-based transitions.
C1 [Aguila, David; Barrios, Leoni A.; Velasco, Veronica; Arnedo, Leticia; Menelaou, Melita; Aromi, Guillem] Univ Barcelona, Dept Quim Inorgan, E-08028 Barcelona, Spain.
   [Aliaga-Alcalde, Nuria] Univ Barcelona, Dept Quim Inorgan, ICREA, E-08028 Barcelona, Spain.
   [Teat, Simon J.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Adv Light Source, Berkeley, CA 94720 USA.
   [Roubeau, Olivier; Luis, Fernando] CSIC, ICMA, E-50009 Zaragoza, Spain.
   [Roubeau, Olivier; Luis, Fernando] Univ Zaragoza, E-50009 Zaragoza, Spain.
RP Aromi, G (reprint author), Univ Barcelona, Dept Quim Inorgan, Diagonal 647, E-08028 Barcelona, Spain.
EM guillem.aromi@qi.ub.es
RI LUIS, Fernando/E-9108-2011; Aliaga-Alcalde, Nuria/H-5886-2011; Menelaou,
   Melita/J-9511-2014; Aromi, Guillem/I-2483-2015; Roubeau,
   Olivier/A-6839-2010; BARRIOS MORENO, LEONI ALEJANDRA/E-5413-2017
OI LUIS, Fernando/0000-0001-6284-0521; Aliaga-Alcalde,
   Nuria/0000-0003-1080-3862; Menelaou, Melita/0000-0001-7845-8802; Aromi,
   Guillem/0000-0002-0997-9484; Roubeau, Olivier/0000-0003-2095-5843;
   BARRIOS MORENO, LEONI ALEJANDRA/0000-0001-7075-9950
FU Generalitat de Catalunya; ERC [258060 FuncMolQIP]; Spanish MCI
   [CTQ2009-06959, MAT2011-24284]; Office of Science, Office of Basic
   Energy Sciences of the U.S. Department of Energy [DE-AC02-05CH11231]
FX G.A. thanks the Generalitat de Catalunya for the prize ICREA Academia
   2008 and the ERC for a starting grant (258060 FuncMolQIP). The authors
   thank the Spanish MCI through CTQ2009-06959 (N.A.A, D.A., V.V., L.B.,
   and G.A.), and MAT2011-24284 (O.R.). The Advanced Light Source is
   supported by the Director, Office of Science, Office of Basic Energy
   Sciences of the U.S. Department of Energy under contract no.
   DE-AC02-05CH11231.
NR 63
TC 36
Z9 37
U1 7
U2 96
PU WILEY-V C H VERLAG GMBH
PI WEINHEIM
PA BOSCHSTRASSE 12, D-69469 WEINHEIM, GERMANY
SN 0947-6539
J9 CHEM-EUR J
JI Chem.-Eur. J.
PD MAY
PY 2013
VL 19
IS 19
BP 5881
EP 5891
DI 10.1002/chem.201204451
PG 11
WC Chemistry, Multidisciplinary
SC Chemistry
GA 136LX
UT WOS:000318364500014
PM 23495070
ER

PT J
AU Robinson, JR
   Booth, CH
   Carroll, PJ
   Walsh, PJ
   Schelter, EJ
AF Robinson, Jerome R.
   Booth, Corwin H.
   Carroll, Patrick J.
   Walsh, Patrick J.
   Schelter, Eric J.
TI Dimeric Rare-Earth BINOLate Complexes: Activation of 1,4-Benzoquinone
   through Lewis Acid Promoted Potential Shifts
SO CHEMISTRY-A EUROPEAN JOURNAL
LA English
DT Article
DE electrochemistry; lanthanides; magnetism; oxidation; spectroscopy
ID CHARGE-TRANSFER COMPLEX; ELECTRON-TRANSFER; CRYSTAL-STRUCTURE;
   MAGNETIC-PROPERTIES; SUBSTRATE-BINDING; METAL-IONS; LANTHANIDE;
   CHEMISTRY; CEROCENE; STATE
AB Reaction of p-benzoquinone (BQ) with a series of rare-earth metal/alkali metal/1,1'-BINOLate (REMB) complexes (RE: La, Ce, Pr, Nd; M: Li) results in the largest recorded shift in reduction potential observed for BQ upon complexation. In the case of cerium, the formation of a 2: 1 Ce/BQ complex shifts the two-electron reduction of BQ by greater than or equal to 1.6 V to a more favorable potential. Reactivity investigations were extended to other REIII (RE = La, Pr, Nd) complexes where the resulting highly electron-deficient quinone ligands afforded isolation of the first lanthanide quinhydrone-type charge-transfer complexes. The large reduction-potential shift associated with the formation of 2: 1 Ce/BQ complexes illustrate the potential of Ce complexes to function both as a Lewis acid and an electron source in redox chemistry and organic-substrate activation.
C1 [Robinson, Jerome R.; Carroll, Patrick J.; Walsh, Patrick J.; Schelter, Eric J.] Univ Penn, Dept Chem, Philadelphia, PA 19104 USA.
   [Booth, Corwin H.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Chem Sci, Berkeley, CA 94720 USA.
RP Walsh, PJ (reprint author), Univ Penn, Dept Chem, 231 S 34th St, Philadelphia, PA 19104 USA.
EM pwalsh@sas.upenn.edu; schelter@sas.upenn.edu
RI Schelter, Eric/E-2962-2013
FU NSF [CHE-1026553, CHE-0840438]; Penn University Research Foundation;
   Office of Science (OS), Office of Basic Energy Sciences, of the U.S.
   Department of Energy (DOE) [DE-AC02-05CH11231]
FX E.J.S. and P.J.W. acknowledge the University of Pennsylvania and the NSF
   (CHE-1026553 and CHE-0840438 for an X-ray diffractometer). We thank
   Prof. Jay Kikkawa (UPenn) for assistance with the magnetic measurements,
   and Dr. Jun Gu (UPenn) for assistance with the DOSY measurements. The
   Penn University Research Foundation is acknowledged for support of the
   PerkinElmer 950 UV/Vis/NIR Spectrophotometer. We thank the Kagan group
   (UPenn) for use of their Cary 5000 Spectrophotometer. Portions of this
   work were supported by the Director, Office of Science (OS), Office of
   Basic Energy Sciences, of the U.S. Department of Energy (DOE) under
   Contract No. DE-AC02-05CH11231, and were carried out at SSRL, a
   Directorate of SLAC National Accelerator Laboratory and an OS User
   Facility operated for the DOE OS by Stanford University.
NR 59
TC 15
Z9 15
U1 2
U2 40
PU WILEY-V C H VERLAG GMBH
PI WEINHEIM
PA BOSCHSTRASSE 12, D-69469 WEINHEIM, GERMANY
SN 0947-6539
J9 CHEM-EUR J
JI Chem.-Eur. J.
PD MAY
PY 2013
VL 19
IS 19
BP 5996
EP 6004
DI 10.1002/chem.201300026
PG 9
WC Chemistry, Multidisciplinary
SC Chemistry
GA 136LX
UT WOS:000318364500027
PM 23495100
ER

PT J
AU Schwartz, V
   Fu, WJ
   Tsai, YT
   Meyer, HM
   Rondinone, AJ
   Chen, JH
   Wu, ZL
   Overbury, SH
   Liang, CD
AF Schwartz, Viviane
   Fu, Wujun
   Tsai, Yu-Tung
   Meyer, Harry M., III
   Rondinone, Adam J.
   Chen, Jihua
   Wu, Zili
   Overbury, Steven H.
   Liang, Chengdu
TI Oxygen-Functionalized Few-Layer Graphene Sheets as Active Catalysts for
   Oxidative Dehydrogenation Reactions
SO CHEMSUSCHEM
LA English
DT Article
DE active centers; dehydrogenation; graphene; heterogeneous catalysis;
   oxygen functionalization
ID CARBON NANOTUBES; HETEROGENEOUS CATALYSIS; SURFACE-CHEMISTRY; N-BUTANE;
   ETHYLBENZENE; OXIDE; SITE
AB Nanostructured graphitic forms of carbons have shown intersting potential for catalysis research and are ideal candidates to substitute the conventional metal-oxide catalysts because they can be easily disposed, which enables a greener, more sustainable catalytic process. Few-layer graphene and its functionalized form offer the opportunity to investigate the nature of graphitic active sites for oxidation reactions in well-defined carbon-based catalysts. In this paper, we report the utilization of oxygen-functionalized few-layer graphene sheets containing variable amounts of oxygen in the heterogeneous catalytic oxidative dehydrogenation (ODH) reaction of isobutane at 400oC. Interestingly, there is poor correlation between oxygen content and catalytic performance. Carbonyl groups were found to be highly stable, and graphene that had higher sp2 character, the lowest oxygen content, and fewer edge sites presented the lowest specific rate of isobutane reaction, although the isobutene selectivity remained high. The reoxidation of the graphene surface occurred at the same rate as the ODH reaction suggesting a MarsvanKrevelen type of mechanism, similar to that which takes place on oxide surfaces. These results appear to suggest that a higher fraction of exposed edges where oxygen active sites can be formed and exchanged should lead to more active catalysts for ODH reactions.
C1 [Schwartz, Viviane; Fu, Wujun; Tsai, Yu-Tung; Rondinone, Adam J.; Chen, Jihua; Wu, Zili; Overbury, Steven H.; Liang, Chengdu] Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Oak Ridge, TN 37831 USA.
   [Meyer, Harry M., III] Oak Ridge Natl Lab, Div Mat Sci, Oak Ridge, TN 37831 USA.
   [Wu, Zili; Overbury, Steven H.] Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN 37831 USA.
RP Schwartz, V (reprint author), Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, 1 Bethel Valley Rd, Oak Ridge, TN 37831 USA.
EM schwartzv@ornl.gov; liangcn@ornl.gov
RI Liang, Chengdu/G-5685-2013; Chen, Jihua/F-1417-2011; Wu,
   Zili/F-5905-2012; Rondinone, Adam/F-6489-2013; Overbury,
   Steven/C-5108-2016
OI Chen, Jihua/0000-0001-6879-5936; Wu, Zili/0000-0002-4468-3240;
   Rondinone, Adam/0000-0003-0020-4612; Overbury,
   Steven/0000-0002-5137-3961
FU Scientific User Facilities Division, Office of Basic Energy Sciences, U.
   S. Department of Energy
FX This work was conducted at the Center for Nanophase Materials Sciences,
   Oak Ridge National Laboratory (ORNL), which is sponsored by the
   Scientific User Facilities Division, Office of Basic Energy Sciences, U.
   S. Department of Energy. The research was supported in part by an
   appointment to the ORNL Postdoctoral Research Associates Program
   administered jointly by Oak Ridge Institute for Science and Education
   (ORISE) and ORNL.
NR 37
TC 26
Z9 27
U1 3
U2 133
PU WILEY-V C H VERLAG GMBH
PI WEINHEIM
PA BOSCHSTRASSE 12, D-69469 WEINHEIM, GERMANY
SN 1864-5631
EI 1864-564X
J9 CHEMSUSCHEM
JI ChemSusChem
PD MAY
PY 2013
VL 6
IS 5
BP 840
EP 846
DI 10.1002/cssc.201200756
PG 7
WC Chemistry, Multidisciplinary; GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY
SC Chemistry; Science & Technology - Other Topics
GA 136IQ
UT WOS:000318356000012
PM 23471876
ER

PT J
AU Faber, KT
   Lara-Curzio, E
AF Faber, Katherine T.
   Lara-Curzio, Edgar
TI Emerging Opportunities in Ceramics: Reports from the 4th International
   Congress on Ceramics
SO INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY
LA English
DT Article
C1 [Faber, Katherine T.] Northwestern Univ, Dept Mat Sci & Engn, Evanston, IL 60208 USA.
   [Lara-Curzio, Edgar] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA.
RP Faber, KT (reprint author), Northwestern Univ, Dept Mat Sci & Engn, Evanston, IL 60208 USA.
RI Faber, Katherine/B-6741-2009
FU ArcelorMittal; Argonne National Laboratory; Boeing Co.; Basic Science
   Division of The American Ceramic Society; Ceradyne, Inc.; Corning, Inc.;
   Kyocera Corp.; Morgan Crucible Co. plc; National Science Foundation [DMR
   - 1202016]; Northwestern University; Oak Ridge National Laboratory;
   Samsung Electro-Mechanics; Wiley
FX We are especially indebted to the financial support from ArcelorMittal,
   Argonne National Laboratory, The Boeing Co., the Basic Science Division
   of The American Ceramic Society, Ceradyne, Inc., Corning, Inc., Kyocera
   Corp., Morgan Crucible Co. plc, National Science Foundation (under Grant
   #DMR - 1202016), Northwestern University, Oak Ridge National Laboratory,
   Samsung Electro-Mechanics, and Wiley. Both Argonne National Laboratory
   and the Illinois Institute of Technology offered tours for our
   participants. Gratitude also goes to rapporteurs, Paolo Colombo, Sylvia
   Johnson, Yutai Katoh, Louis Mattos, Jr., Martha Mecartney, Marina
   Pascucci, Vivek Pawar, Mohammed Pour Ghaz, Todd Steyer, S. K. Sundaram,
   Andrea Testino, Omer Van der Biest, and Peter Wray, who compiled the
   emerging opportunities from the Congress, and whose contributions will
   appear in this and subsequent issues of the International Journal of
   Applied Ceramic Technology.
NR 4
TC 0
Z9 0
U1 0
U2 8
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 1546-542X
J9 INT J APPL CERAM TEC
JI Int. J. Appl. Ceram. Technol.
PD MAY-JUN
PY 2013
VL 10
IS 3
BP 377
EP 378
DI 10.1111/ijac.12089
PG 2
WC Materials Science, Ceramics
SC Materials Science
GA 137IN
UT WOS:000318429100001
ER

PT J
AU Matheson, J
AF Matheson, Jim
TI How to get real innovation flowing in the water industry
SO JOURNAL AMERICAN WATER WORKS ASSOCIATION
LA English
DT Article
C1 [Matheson, Jim] Oasys Water Boston, Boston, MA USA.
   [Matheson, Jim] Lawrence Berkeley Natl Lab, Dept Energy, Berkeley, CA USA.
RP Matheson, J (reprint author), Oasys Water Boston, Boston, MA USA.
EM jmatheson@oasyswater.com
NR 4
TC 0
Z9 0
U1 2
U2 3
PU AMER WATER WORKS ASSOC
PI DENVER
PA 6666 W QUINCY AVE, DENVER, CO 80235 USA
SN 2164-4535
J9 J AM WATER WORKS ASS
JI J. Am. Water Work Assoc.
PD MAY
PY 2013
VL 105
IS 5
BP 108
EP 117
DI 10.5942/jawwa.2013.105.0069
PG 10
WC Engineering, Civil; Water Resources
SC Engineering; Water Resources
GA 136BD
UT WOS:000318333500019
ER

PT J
AU Garcia-Dieguez, M
   Iglesia, E
AF Garcia-Dieguez, Monica
   Iglesia, Enrique
TI Structure sensitivity via decoration of low-coordination exposed metal
   atoms: CO oxidation catalysis on Pt clusters
SO JOURNAL OF CATALYSIS
LA English
DT Article
DE Structure sensitivity; CO oxidation; Platinum; Oxygen decoration
ID OXYGEN DISSOCIATION; CHEMISORBED OXYGEN; SITE REQUIREMENTS;
   CARBON-MONOXIDE; ADSORPTION; PLATINUM; SURFACE; PT(111); CONSEQUENCES;
   COMBUSTION
AB The effects of CO and O-2 concentrations on turnover rates and (O2-16O2)-O-18 exchange rates during catalysis are used to assess the relevant elementary steps and the consequences of Pt coordination for CO oxidation catalysis at moderate temperatures (700-800 K) on supported Pt clusters 1.8-25 nm in diameter. Turnover rates, measured under conditions of strict kinetic control, are proportional to O-2 pressure and inhibited by CO; these data are consistent with kinetically-relevant O-2 dissociation steps on cluster surfaces covered partially by chemisorbed CO (CO*). O-2 dissociation also limits CO oxidation rates at higher temperatures, which lead to bare Pt surfaces, and at lower temperatures, where saturation CO* coverages require O-2 dissociation to be assisted by CO* because of a dearth of vacant sites. At the intermediate temperatures used here, kinetic coupling between irreversible O-2 activation and CO* reactions with O* causes edge and corner atoms to become decorated by unreactive O* species; consequently, turnovers occur predominantly on exposed low-index planes, which account for a decreasing fraction of exposed atoms with increasing metal dispersion. These decoration effects confer the appearance of structure sensitivity to the prototypical structure insensitive reaction by rendering only a fraction of exposed metal atoms able to turnover. These active sites, residing at exposed low-index planes, show similar CO* binding energies on large and small Pt clusters,,but their relative abundance decreases as clusters become smaller, leading to a sharp decrease in turnover rates with increasing Pt dispersion. These trends stand in marked contrast with the absence of cluster size effects on CO oxidation rates at low temperatures, where high CO* coverages dampen the intrinsic site non-Uniformity of metal clusters, and at high temperatures, where all Pt atoms remain accessible irrespective of coordination and active for catalytic turnovers. (C) 2013 Elsevier Inc. All rights reserved.
C1 [Garcia-Dieguez, Monica; Iglesia, Enrique] Univ Calif Berkeley, Dept Chem Engn, Berkeley, CA 94720 USA.
   [Iglesia, Enrique] EO Lawrence Berkeley Natl Lab, Div Chem Sci, Berkeley, CA 94720 USA.
RP Iglesia, E (reprint author), Univ Calif Berkeley, Dept Chem Engn, Berkeley, CA 94720 USA.
EM iglesia@berkeley.edu
RI Iglesia, Enrique/D-9551-2017
OI Iglesia, Enrique/0000-0003-4109-1001
FU BP, Methane Conversion Cooperative Research Program at the University of
   California at Berkeley; Spanish Ministry of Science and Innovation
FX This study has been funded by BP as part of the Methane Conversion
   Cooperative Research Program at the University of California at
   Berkeley. M. Garcia-Dieguez acknowledges a postdoctoral fellowship from
   the Spanish Ministry of Science and Innovation (Mobility Grants for
   Postdoctoral Research). We also thank Professor David W. Flaherty for
   helpful technical discussions.
NR 29
TC 12
Z9 12
U1 4
U2 108
PU ACADEMIC PRESS INC ELSEVIER SCIENCE
PI SAN DIEGO
PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA
SN 0021-9517
J9 J CATAL
JI J. Catal.
PD MAY
PY 2013
VL 301
BP 198
EP 209
DI 10.1016/j.jcat.2013.02.014
PG 12
WC Chemistry, Physical; Engineering, Chemical
SC Chemistry; Engineering
GA 136AR
UT WOS:000318332300024
ER

PT J
AU Ye, ZX
   Cho, JY
   Tessema, MM
   Salvador, JR
   Waldo, RA
   Wang, H
   Cai, W
AF Ye, Zuxin
   Cho, Jung Young
   Tessema, Misle M.
   Salvador, James R.
   Waldo, Richard A.
   Wang, Hsin
   Cai, Wei
TI The effect of structural vacancies on the thermoelectric properties of
   (Cu2Te)(1-x)(Ga2Te3)(x)
SO JOURNAL OF SOLID STATE CHEMISTRY
LA English
DT Article
DE Thermoelectrics; Thermal conductivity; Vacancies; Chalcopyrite
ID NANOSTRUCTURED THERMOELECTRICS; CRYSTAL-STRUCTURE; POWER-GENERATION;
   CUGATE2; EFFICIENCY; SYSTEM; PHASE; GA; CU
AB We have studied the effects of structural vacancies on the thermoelectric properties of the ternary compounds (Cu2Te)(1-x)(Ga2Te3)(x) (x=0.5, 0.55, 0.571, 0.6, 0.625, 0.667 and 0.75), which are solid solutions found in the pseudo-binary phase diagram for Cu2Te and Ga2Te3, and possesses tunable structural vacancy concentrations. This materials system is not suitable due to the cost and scarcity of the constituent elements, but the vacancy behavior is well understood and will provide a valuable test case for other systems more suitable from the standpoint of cost and abundance of raw materials, which also possesses these vacancy features, but whose structural characterization is lacking at this stage. We find that the nominally defect free phase CuGaTe2 possess the highest ZT (ZT=(ST)-T-2/rho kappa, where S is the Seebeck coefficient and rho is the electrical resistivity kappa is the thermal conductivity and T is the absolute temperature) which approaches 1 at 840 K and seems to continuously increase above this temperature. This result is due to the unexpectedly low thermal conductivity found for this material at high temperature. The low thermal conductivity was caused by strong Umklapp (thermally resistive scattering processes involving three phonons) phonon scattering. We find that due to the coincidentally strong scattering of carriers by the structural defects that higher concentrations of these features lead to poor electrical transport properties and decreased ZT. (C) 2013 Elsevier Inc. All rights reserved.
C1 [Ye, Zuxin; Cho, Jung Young; Tessema, Misle M.] Optimal Inc, Plymouth Township, MI 48170 USA.
   [Salvador, James R.; Waldo, Richard A.] GM Corp, Global R&D, Warren, MI 48090 USA.
   [Wang, Hsin; Cai, Wei] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA.
RP Salvador, JR (reprint author), GM Corp, Global R&D, Warren, MI 48090 USA.
EM james.salvador@gm.com
RI Wang, Hsin/A-1942-2013
OI Wang, Hsin/0000-0003-2426-9867
FU GM; DOE [DE-FC26-04NT42278]; Oak Ridge Nationals Laboratory for the
   Department of Energy [DE-AC05000OR22725]
FX JRS would like to thank J. F. Herbst and M. W. Verbrugge for their
   continued support and encouragement. The work at GM is supported by GM
   and by DOE under corporate agreement DE-FC26-04NT42278. This work is
   also supported by Oak Ridge Nationals Laboratory, managed by UT Battelle
   LLC, for the Department of Energy under contract DE-AC05000OR22725.
NR 40
TC 9
Z9 9
U1 1
U2 70
PU ACADEMIC PRESS INC ELSEVIER SCIENCE
PI SAN DIEGO
PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA
SN 0022-4596
J9 J SOLID STATE CHEM
JI J. Solid State Chem.
PD MAY
PY 2013
VL 201
BP 262
EP 269
DI 10.1016/j.jssc.2013.02.008
PG 8
WC Chemistry, Inorganic & Nuclear; Chemistry, Physical
SC Chemistry
GA 133KF
UT WOS:000318136600039
ER

PT J
AU Kumar, A
   Karig, D
   Acharya, R
   Neethirajan, S
   Mukherjee, PP
   Retterer, S
   Doktycz, MJ
AF Kumar, Aloke
   Karig, David
   Acharya, Rajesh
   Neethirajan, Suresh
   Mukherjee, Partha P.
   Retterer, Scott
   Doktycz, Mitchel J.
TI Microscale confinement features can affect biofilm formation
SO MICROFLUIDICS AND NANOFLUIDICS
LA English
DT Article
DE Microfluidics; Biofilms; Secondary flows; Bacteria; Micro-vortices
ID PARTICLE IMAGE VELOCIMETRY; MICROFLUIDIC DEVICE; BACTERIAL BIOFILMS;
   FLOW; HYDRODYNAMICS; STREAMERS; GROWTH; SUSCEPTIBILITY; COATINGS;
   BEHAVIOR
AB The majority of bacteria in nature live in biofilms, where they are encased by extracellular polymeric substances (EPS) and adhere to various surfaces and interfaces. Investigating the process of biofilm formation is critical for advancing our understanding of microbes in their most common mode of living. Despite progress in characterizing the effect of various environmental factors on biofilm formation, work remains to be done in the realm of exploring the inter-relationship between hydrodynamics, microbial adhesion and biofilm growth. We investigate the impact of secondary flow structures, which are created due to semi-confined features in a microfluidic device, on biofilm formation of Shewanella oneidensis MR-1. Secondary flows are important in many natural and artificial systems, but few studies have investigated their role in biofilm formation. To direct secondary flows in the creeping flow regime, where the Reynolds number is low, we flow microbe-laden culture through microscale confinement features. We demonstrate that these confinement features can result in pronounced changes in biofilm dynamics as a function of the fluid flow rate.
C1 [Kumar, Aloke; Acharya, Rajesh; Retterer, Scott; Doktycz, Mitchel J.] Oak Ridge Natl Lab, Biosci Div, Oak Ridge, TN USA.
   [Karig, David] Johns Hopkins Univ, Appl Phys Lab, Res & Exploratory Dev Dept, Baltimore, MD 21218 USA.
   [Neethirajan, Suresh] Univ Guelph, Sch Engn, Guelph, ON N1G 2W1, Canada.
   [Mukherjee, Partha P.] Texas A&M Univ, Dept Mech Engn, College Stn, TX 77843 USA.
RP Kumar, A (reprint author), Oak Ridge Natl Lab, Biosci Div, Oak Ridge, TN USA.
EM kumara1@ornl.gov
RI Retterer, Scott/A-5256-2011; Karig, David/G-5703-2011; Doktycz,
   Mitchel/A-7499-2011; 
OI Retterer, Scott/0000-0001-8534-1979; Karig, David/0000-0002-9508-6411;
   Doktycz, Mitchel/0000-0003-4856-8343; Neethirajan,
   Suresh/0000-0003-0990-0235
FU Scientific User Facilities Division, US Department of Energy (US DOE);
   US DOE Office of Biological and Environmental Sciences; US DOE
   [DEAC05-00OR22725]; Natural Sciences and Engineering Research Council of
   Canada
FX The authors would like to thank Dr. Alfred Spormann at Stanford
   University for providing the bacterial strains. A. Kumar performed the
   work as a Eugene P. Wigner Fellow at the Oak Ridge National Laboratory
   (ORNL). A portion of this research was conducted at the Center for
   Nanophase Materials Sciences, which is sponsored at ORNL by the
   Scientific User Facilities Division, US Department of Energy (US DOE).
   The authors acknowledge research support from the US DOE Office of
   Biological and Environmental Sciences. ORNL is managed by UT-Battelle,
   LLC, for the US DOE under contract no. DEAC05-00OR22725. The authors
   also acknowledge the Natural Sciences and Engineering Research Council
   of Canada for providing NSERC fellowship to Dr. Neethirajan.
NR 46
TC 15
Z9 15
U1 5
U2 69
PU SPRINGER HEIDELBERG
PI HEIDELBERG
PA TIERGARTENSTRASSE 17, D-69121 HEIDELBERG, GERMANY
SN 1613-4982
J9 MICROFLUID NANOFLUID
JI Microfluid. Nanofluid.
PD MAY
PY 2013
VL 14
IS 5
BP 895
EP 902
DI 10.1007/s10404-012-1120-6
PG 8
WC Nanoscience & Nanotechnology; Instruments & Instrumentation; Physics,
   Fluids & Plasmas
SC Science & Technology - Other Topics; Instruments & Instrumentation;
   Physics
GA 138DT
UT WOS:000318489500013
ER

PT J
AU Schulz, AE
   Dehnen, W
   Jungman, G
   Tremaine, S
AF Schulz, A. E.
   Dehnen, Walter
   Jungman, Gerard
   Tremaine, Scott
TI Gravitational collapse in one dimension
SO MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
LA English
DT Article
DE gravitation; methods: numerical; Galaxy: kinematics and dynamics;
   galaxies: haloes; cosmology: theory; large-scale structure of Universe
ID DARK-MATTER HALOES; VIOLENT RELAXATION; EXPANDING UNIVERSE; STATISTICAL
   MECHANICS; SYSTEMS; SIMULATIONS; DYNAMICS; MODELS
AB We simulate the evolution of one-dimensional gravitating collisionless systems from non-equilibrium initial conditions, similar to the conditions that lead to the formation of dark-matter haloes in three dimensions. As in the case of 3D halo formation, we find that initially cold, nearly homogeneous particle distributions collapse to approach a final equilibrium state with a universal density profile. At small radii, this attractor exhibits a power-law behaviour in density, rho(x) proportional to vertical bar x vertical bar(-gamma crit), gamma(crit) similar or equal to 0.47, slightly but significantly shallower than the value gamma = 1/2 suggested previously. This state develops from the initial conditions through a process of phase mixing and violent relaxation. This process preserves the energy ranks of particles. By warming the initial conditions, we illustrate a cross-over from this power-law final state to a final state containing a homogeneous core. We further show that inhomogeneous but cold power-law initial conditions, with initial exponent gamma(i) > gamma(crit), do not evolve towards the attractor but reach a final state that retains the original power-law behaviour in the interior of the profile, indicating a bifurcation in the final state as a function of the initial exponent. Our results rely on a high-fidelity event-driven simulation technique.
C1 [Schulz, A. E.; Jungman, Gerard] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
   [Dehnen, Walter] Univ Leicester, Leicester LE1 7RH, Leics, England.
   [Tremaine, Scott] Inst Adv Study, Princeton, NJ 08540 USA.
RP Schulz, AE (reprint author), Los Alamos Natl Lab, POB 1663,MS B227, Los Alamos, NM 87545 USA.
EM alexia.schulz@gmail.com
RI Tremaine, Scott/M-4281-2015
OI Tremaine, Scott/0000-0002-0278-7180
FU Corning Glassworks fellowship; National Science Foundation
FX The authors thank Daniel Holz, Doug Rudd, Mike Warren and Nadia Zakamska
   for inspiring and helpful conversations. AES was supported in part by
   the Corning Glassworks fellowship and the National Science Foundation.
NR 40
TC 8
Z9 8
U1 1
U2 3
PU OXFORD UNIV PRESS
PI OXFORD
PA GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND
SN 0035-8711
J9 MON NOT R ASTRON SOC
JI Mon. Not. Roy. Astron. Soc.
PD MAY
PY 2013
VL 431
IS 1
BP 49
EP 62
DI 10.1093/mnras/stt073
PG 14
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 136EE
UT WOS:000318343600030
ER

PT J
AU Johnson, JL
   Li, H
AF Johnson, Jarrett L.
   Li, Hui
TI Constraints on planet formation via gravitational instability across
   cosmic time
SO MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
LA English
DT Article
DE planets and satellites: composition; planets and satellites: formation;
   protoplanetary discs; cosmology: theory
ID YOUNG SOLAR ANALOG; PROTOPLANETARY DISKS; GIANT PLANETS; WIDE ORBITS;
   PROTOSTELLAR DISCS; THERMAL REGULATION; CIRCUMSTELLAR DISKS; UPPER
   SCORPIUS; 1ST GALAXIES; GAS GIANTS
AB We estimate the maximum temperature at which planets can form via gravitational instability (GI) in the outskirts of early circumstellar discs. We show that due to the temperature floor set by the cosmic microwave background, there is a maximum distance from their host stars beyond which gas giants cannot form via GI, which decreases with their present-day age. Furthermore, we show that planet formation via GI is not possible at metallicities less than or similar to 10(-4) Z(circle dot), due to the reduced cooling efficiency of low-metallicity gas. This critical metallicity for planet formation via GI implies a minimum distance from their host stars of similar to 6 au within which planets cannot form via GI; at higher metallicity, this minimum distance can be significantly larger, out to several tens of au. We show that these maximum and minimum distances significantly constrain the number of observed planets to date that are likely to have formed via GI at their present locations. That said, the critical metallicity we find for GI is well below that for core accretion to operate; thus, the first planets may have formed via GI, although only within a narrow region of their host circumstellar discs.
C1 [Johnson, Jarrett L.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
RP Johnson, JL (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA.
EM jlj@lanl.gov
FU U.S. Department of Energy through the LANL/LDRD Program; Los Alamos
   National Laboratory
FX This work was supported by the U.S. Department of Energy through the
   LANL/LDRD Program. JLJ gratefully acknowledges the support of a
   Director's Postdoctoral Fellowship at Los Alamos National Laboratory.
   The authors thank the reviewers for constructive and cordial reports, as
   well as for encouraging us to explore the impact of low metallicity on
   planet formation via GI as we have done in Section 4.
NR 73
TC 4
Z9 4
U1 0
U2 2
PU OXFORD UNIV PRESS
PI OXFORD
PA GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND
SN 0035-8711
J9 MON NOT R ASTRON SOC
JI Mon. Not. Roy. Astron. Soc.
PD MAY
PY 2013
VL 431
IS 1
BP 972
EP 977
DI 10.1093/mnras/stt229
PG 6
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 136EE
UT WOS:000318343600097
ER

PT J
AU Tashiro, H
   Ho, S
AF Tashiro, Hiroyuki
   Ho, Shirley
TI Constraining primordial non-Gaussianity with CMB-21 cm
   cross-correlations?
SO MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
LA English
DT Article
DE cosmic background radiation; early Universe; large-scale structure of
   Universe
ID MICROWAVE BACKGROUND-RADIATION; 3-POINT CORRELATION-FUNCTION; 21
   CENTIMETER TOMOGRAPHY; INFLATIONARY UNIVERSE; REIONIZATION; EPOCH;
   PERTURBATIONS; PROBE; FLUCTUATIONS; REDSHIFT
AB We investigate the effect of primordial non-Gaussianity on the cross-correlation between the cosmic microwave background (CMB) anisotropies and the 21 cm fluctuations from the epoch of reionization. We assume an analytic reionization model and an ionization fraction with f(NL) induced scale-dependent bias. We estimate the angular power spectrum of the cross-correlation of the CMB and 21 cm. In order to evaluate the detectability, the signal-to-noise (S/N) ratio for only a single redshift slice is also calculated for current and future observations, such as CMB observations by Planck satellite and 21cm observations by Omniscope. The existence of the f(NL) increases the signal of the cross-correlation at large scales and the amplification does not depend on the reionization parameters in our reionization model. The obtained S/N ratio is 2.8 (2.4) for f(NL) = 10 (100) in our fiducial reionization model, although the cosmic variance suppressed the S/N ratio on such scales. Our work suggests that in the absence of significant foregrounds and systematics, the autocorrelations of 21 cm are a better probe of f(NL) than the cross-correlations (as expected since they depend on b(2)), while the cross-correlations contain only one factor of b. Nevertheless, it is interesting to examine the cross-correlations between 21 cm and CMB, as the S/N ratio is not negligible and it is more likely that we can rid ourselves of systematics and foregrounds that are common to both CMB and 21 cm experiments than completely clean 21 cm of all of the possible foregrounds and systematics in large scales.
C1 [Tashiro, Hiroyuki] Arizona State Univ, Dept Phys, Tempe, AZ 85287 USA.
   [Ho, Shirley] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
   [Ho, Shirley] Carnegie Mellon Univ, Dept Phys, Pittsburgh, PA 15213 USA.
RP Tashiro, H (reprint author), Arizona State Univ, Dept Phys, Tempe, AZ 85287 USA.
EM htashiro@asu.edu
FU Department of Energy Lawrence Berkeley National Laboratory Chamberlain
   and Seaborg Fellowship
FX We thank N. Sugiyma, M. McQuinn, U.-L. Pen and S. Chongchitnan for their
   insightful comments. SH would like to acknowledge the Department of
   Energy Lawrence Berkeley National Laboratory Chamberlain and Seaborg
   Fellowship which supports the production of this work.
NR 39
TC 3
Z9 3
U1 0
U2 0
PU OXFORD UNIV PRESS
PI OXFORD
PA GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND
SN 0035-8711
J9 MON NOT R ASTRON SOC
JI Mon. Not. Roy. Astron. Soc.
PD MAY
PY 2013
VL 431
IS 3
BP 2017
EP 2023
DI 10.1093/mnras/stt191
PG 7
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 136FL
UT WOS:000318347500001
ER

PT J
AU Wu, R
   Gu, M
   Wilton, R
   Babnigg, G
   Kim, Y
   Pokkuluri, PR
   Szurmant, H
   Joachimiak, A
   Schiffer, M
AF Wu, R.
   Gu, M.
   Wilton, R.
   Babnigg, G.
   Kim, Y.
   Pokkuluri, P. R.
   Szurmant, H.
   Joachimiak, A.
   Schiffer, M.
TI Insight into the sporulation phosphorelay: Crystal structure of the
   sensor domain of Bacillus subtilis histidine kinase, KinD
SO PROTEIN SCIENCE
LA English
DT Article
DE signal transduction; sporulation; ligand-binding; Bacillus subtilis;
   bacterial development; two-component system; histidine kinase; KinD
ID PROMOTE PROTEIN STABILITY; SIGNAL-TRANSDUCTION; HIGH-THROUGHPUT; BINDING
   DOMAIN; MODEL; MUTAGENESIS; RECOGNITION; MECHANISMS; EXPRESSION;
   RECEPTORS
AB The Bacillus subtilis KinD signal-transducing histidine kinase is a part of the sporulation phosphorelay known to regulate important developmental decisions such as sporulation and biofilm formation. We have determined crystal structures of the extracytoplasmic sensing domain of KinD, which was copurified and crystallized with a pyruvate ligand. The structure of a ligand-binding site mutant was also determined; it was copurified and crystallized with an acetate ligand. The structure of the KinD extracytoplasmic segment is similar to that of several other sensing domains of signal transduction proteins and is composed of tandem Per-Arnt-Sim (PAS)-like domains. The KinD ligand-binding site is located on the membrane distal PAS-like domain and appears to be highly selective; a single mutation, R131A, abolishes pyruvate binding and the mutant binds acetate instead. Differential scanning fluorimetry, using a variety of monocarboxylic and dicarboxylic acids, identified pyruvate, propionate, and butyrate but not lactate, acetate, or malate as KinD ligands. A recent report found that malate induces biofilm formation in a KinD-dependent manner. It was suggested that malate might induce a metabolic shift and increased secretion of the KinD ligand of unknown identity. The structure and binding assays now suggests that this ligand is pyruvate and/or other small monocarboxylic acids. In summary, this study gives a first insight into the identity of a molecular ligand for one of the five phosphorelay kinases of B. subtilis.
C1 [Wu, R.; Gu, M.; Wilton, R.; Babnigg, G.; Kim, Y.; Joachimiak, A.; Schiffer, M.] Argonne Natl Lab, Midwest Ctr Struct Genom, Argonne, IL 60439 USA.
   [Pokkuluri, P. R.] Argonne Natl Lab, Argonne, IL 60439 USA.
   [Szurmant, H.] Scripps Res Inst, Dept Mol & Expt Med, La Jolla, CA 92037 USA.
RP Schiffer, M (reprint author), Argonne Natl Lab, Midwest Ctr Struct Genom, 9700 South Cass Ave, Argonne, IL 60439 USA.
EM szurmant@scripps.edu; andrzejj@anl.gov; mschiffer@anl.gov
FU National Institutes of Health [GM094585, GM019416]; U.S. Department of
   Energy, Office of Biological and Environmental Research
   [DE-AC02-06CH11357]; Argonne, a U.S. Department of Energy Office of
   Science laboratory [DE-AC02-06CH11357]
FX Grant sponsor: National Institutes of Health; Grant number: GM094585
   (A.J.) GM019416 (H. S.); Grant sponsor: The U.S. Department of Energy,
   Office of Biological and Environmental Research, under contract
   DE-AC02-06CH11357.; The submitted manuscript has been created by
   UChicago Argonne, LLC, Operator of Argonne National Laboratory
   ("Argonne"). Argonne, a U.S. Department of Energy Office of Science
   laboratory, is operated under Contract No. DE-AC02-06CH11357. The U.S.
   Government retains for itself, and others acting on its behalf, a
   paid-up nonexclusive, irrevocable worldwide license in said article to
   reproduce, prepare derivative works, distribute copies to the public,
   and perform publicly and display publicly, by or on behalf of the
   Government.
NR 53
TC 11
Z9 11
U1 1
U2 12
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 0961-8368
J9 PROTEIN SCI
JI Protein Sci.
PD MAY
PY 2013
VL 22
IS 5
BP 564
EP 576
DI 10.1002/pro.2237
PG 13
WC Biochemistry & Molecular Biology
SC Biochemistry & Molecular Biology
GA 134TW
UT WOS:000318238700005
PM 23436677
ER

PT J
AU Wheatley, NM
   Gidaniyan, SD
   Liu, YX
   Cascio, D
   Yeates, TO
AF Wheatley, Nicole M.
   Gidaniyan, Soheil D.
   Liu, Yuxi
   Cascio, Duilio
   Yeates, Todd O.
TI Bacterial microcompartment shells of diverse functional types possess
   pentameric vertex proteins
SO PROTEIN SCIENCE
LA English
DT Article
DE OCAC; oligomeric state determination; EutN; bacterial microcompartments;
   protein assembly; capsid; glycyl radical; BMV; pentameric vertex
   protein; GrpN
ID SALMONELLA-TYPHIMURIUM; CARBOXYSOME SHELL; ORGANELLES; DNA;
   ETHANOLAMINE; EVOLUTION; ENTERICA; PCC7942; GROWTH; GENES
AB Bacterial microcompartments (MCPs) are large proteinaceous structures comprised of a roughly icosahedral shell and a series of encapsulated enzymes. MCPs carrying out three different metabolic functions have been characterized in some detail, while gene expression and bioinformatics studies have implicated other types, including one believed to perform glycyl radical-based metabolism of 1,2-propanediol (Grp). Here we report the crystal structure of a protein (GrpN), which is presumed to be part of the shell of a Grp-type MCP in Rhodospirillum rubrum F11. GrpN is homologous to a family of proteins (EutN/PduN/CcmL/CsoS4) whose members have been implicated in forming the vertices of MCP shells. Consistent with that notion, the crystal structure of GrpN revealed a pentameric assembly. That observation revived an outstanding question about the oligomeric state of this protein family: pentameric forms (for CcmL and CsoS4A) and a hexameric form (for EutN) had both been observed in previous crystal structures. To clarify these confounding observations, we revisited the case of EutN. We developed a molecular biology-based method for accurately determining the number of subunits in homo-oligomeric proteins, and found unequivocally that EutN is a pentamer in solution. Based on these convergent findings, we propose the name bacterial microcompartment vertex for this special family of MCP shell proteins.
C1 [Wheatley, Nicole M.; Yeates, Todd O.] Univ Calif Los Angeles, Inst Mol Biol, Los Angeles, CA 90095 USA.
   [Gidaniyan, Soheil D.; Cascio, Duilio; Yeates, Todd O.] Univ Calif Los Angeles, UCLA DOE Inst Genom & Prote, Los Angeles, CA 90095 USA.
   [Liu, Yuxi; Yeates, Todd O.] Univ Calif Los Angeles, Dept Chem & Biochem, Los Angeles, CA 90095 USA.
RP Yeates, TO (reprint author), Univ Calif Los Angeles, Dept Chem & Biochem, 611 Charles Young,Dr East, Los Angeles, CA 90095 USA.
EM yeates@mbi.ucla.edu
OI Liu, Yuxi/0000-0003-1439-9000; Yeates, Todd/0000-0001-5709-9839
FU NIH [R01AI08114, P41RR015301, P41GM103403]; Ruth L. Kirschstein National
   Research Service Award [GM007185]; DOE [DE-FC02-02ER63421,
   DE-AC02-06CH11357]
FX Grant sponsor: NIH grant; Grant numbers: R01AI08114, P41RR015301,
   P41GM103403; Grant sponsor: Ruth L. Kirschstein National Research
   Service Award; Grant number: GM007185; Grant sponsor: DOE Grant; Grant
   numbers: DE-FC02-02ER63421, DE-AC02-06CH11357.
NR 39
TC 24
Z9 24
U1 0
U2 14
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 0961-8368
J9 PROTEIN SCI
JI Protein Sci.
PD MAY
PY 2013
VL 22
IS 5
BP 660
EP 665
DI 10.1002/pro.2246
PG 6
WC Biochemistry & Molecular Biology
SC Biochemistry & Molecular Biology
GA 134TW
UT WOS:000318238700013
PM 23456886
ER

PT J
AU Brookshear, DW
   Nguyen, K
   Toops, TJ
   Bunting, BG
   Rohr, WF
AF Brookshear, D. William
   Nguyen, Ke
   Toops, Todd J.
   Bunting, Bruce G.
   Rohr, William F.
TI Impact of Biodiesel-Based Na on the Selective Catalytic Reduction of NOx
   by NH3 Over Cu-Zeolite Catalysts
SO TOPICS IN CATALYSIS
LA English
DT Article; Proceedings Paper
CT 9th International Congress on Catalysis and Automotive Pollution Control
   (CAPoC)
CY AUG 29-31, 2012
CL Brussels, BELGIUM
DE Cu-zeolite SCR; Accelerated aging; Na contamination; Biodiesel;
   Light-duty; Heavy-duty
AB A single-cylinder diesel engine was used to investigate the impact of Na on Cu-zeolite SCR catalysts using 20 % bio- and petrol-diesel fuel blend (B20) with elevated levels of Na. The Na exposure was performed on light-duty (DOC-SCR-DPF) and heavy-duty (DOC-DPF-SCR) configurations of the diesel emissions control devices. The accelerated Na aging is achieved by exposing the system to elevated levels of Na that represent full useful life exposure (700,000 km) and periodically increasing the exhaust temperature to replicate DPF regeneration. After aging, the NOx performance and relevant chemistry of the SCR catalysts were evaluated in a bench flow reactor. The SCR in the DOC-SCR-DPF configuration was found to be severely affected by Na contamination, especially when NO was the only NOx species in the simulated exhaust gases. In the DOC-DPF-SCR configuration, no impact is observed in the SCR NOx reduction activity. Electron microprobe analysis (EPMA) reveals that Na contamination on the SCR samples in the DOC-SCR-DPF configuration is present throughout the length of the catalysts.
C1 [Brookshear, D. William; Nguyen, Ke; Rohr, William F.] Univ Tennessee, Knoxville, TN 37996 USA.
   [Toops, Todd J.; Bunting, Bruce G.] Oak Ridge Natl Lab, Knoxville, TN 37932 USA.
RP Toops, TJ (reprint author), Oak Ridge Natl Lab, 2360 Cherahala Blvd, Knoxville, TN 37932 USA.
EM toopstj@ornl.gov
OI Brookshear, Daniel/0000-0003-1259-4347
NR 16
TC 2
Z9 2
U1 1
U2 28
PU SPRINGER/PLENUM PUBLISHERS
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 1022-5528
J9 TOP CATAL
JI Top. Catal.
PD MAY
PY 2013
VL 56
IS 1-8
BP 62
EP 67
DI 10.1007/s11244-013-9930-7
PG 6
WC Chemistry, Applied; Chemistry, Physical
SC Chemistry
GA 134MH
UT WOS:000318213800013
ER

PT J
AU Pihl, J
   Lewis, J
   Toops, T
   Parks, J
AF Pihl, Josh A.
   Lewis, Jennifer A.
   Toops, Todd J.
   Parks, James E., II
TI Lean NOx Trap Chemistry Under Lean-Gasoline Exhaust Conditions: Impact
   of High NOx Concentrations and High Temperature
SO TOPICS IN CATALYSIS
LA English
DT Article; Proceedings Paper
CT 9th International Congress on Catalysis and Automotive Pollution Control
   (CAPoC)
CY AUG 29-31, 2012
CL Brussels, BELGIUM
DE Lean gasoline; Lean NOx trap; NOx storage reduction
ID ZEOLITE; CATALYSTS; SULFUR
AB The primary technical barrier to deployment of fuel saving lean gasoline engines is NOx emissions control. We conducted automated flow reactor experiments on a commercial LNT catalyst to identify opportunities and challenges associated with the higher temperatures and higher NOx concentrations expected in lean gasoline applications. Overall NOx conversion was quite high at low to moderate temperatures, but dropped off at high temperatures. The decrease in NOx conversion with temperature was worse for higher inlet NOx concentrations. As expected from equilibrium considerations, the catalyst stored more NOx under higher gas phase NOx concentrations, but that NOx was rapidly released during the rich phase and slipped out of the catalyst before it could be converted to N-2 by incoming reductant. This rich phase NOx release was the primary factor limiting performance of the catalyst at high temperatures, and resulted in significant spikes of NOx that would likely exceed any not-to-exceed regulated emissions levels. N2O production was also significant, and increased with NOx concentration. The catalyst made very little NH3 at high temperatures. NH3 yield was significant at the lowest operating temperature studied, but it decreased with increasing NOx concentration.
C1 [Pihl, Josh A.; Lewis, Jennifer A.; Toops, Todd J.; Parks, James E., II] Oak Ridge Natl Lab, Knoxville, TN 37932 USA.
RP Pihl, J (reprint author), Oak Ridge Natl Lab, 2360 Cherahala Blvd, Knoxville, TN 37932 USA.
EM pihlja@ornl.gov
NR 17
TC 0
Z9 0
U1 1
U2 23
PU SPRINGER/PLENUM PUBLISHERS
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 1022-5528
J9 TOP CATAL
JI Top. Catal.
PD MAY
PY 2013
VL 56
IS 1-8
BP 89
EP 93
DI 10.1007/s11244-013-9934-3
PG 5
WC Chemistry, Applied; Chemistry, Physical
SC Chemistry
GA 134MH
UT WOS:000318213800017
ER

PT J
AU Koci, P
   Bartova, S
   Mracek, D
   Marek, M
   Choi, JS
   Kim, MY
   Pihl, JA
   Partridge, WP
AF Koci, Petr
   Bartova, Sarka
   Mracek, David
   Marek, Milos
   Choi, Jae-Soon
   Kim, Mi-Young
   Pihl, Josh A.
   Partridge, William P.
TI Effective Model for Prediction of N2O and NH3 Formation During the
   Regeneration of NOx Storage Catalyst
SO TOPICS IN CATALYSIS
LA English
DT Article; Proceedings Paper
CT 9th International Congress on Catalysis and Automotive Pollution Control
   (CAPoC)
CY AUG 29-31, 2012
CL Brussels, BELGIUM
DE Lean NOx trap; NOx storage; NOx reduction; Selectivity; N2O; NH3
ID H-2
AB In this paper we propose an effective global kinetic model that allows prediction of N2O and NH3 formation during the reduction of stored NO (x) in dependence on the composition of the rich mixture (H-2/CO/C3H6), actual operating temperature, and length of regeneration period. A bench flow reactor equipped with a high-speed FTIR was used to measure dynamic evolution of gas components during periodic lean/rich operation of a fully formulated NSRC catalyst (PtPdRh/Ba/Ce-Zr/Mg-Al/Al2O3).
C1 [Koci, Petr; Bartova, Sarka; Mracek, David; Marek, Milos] Prague Inst Chem Technol, Dept Chem Engn, CR-16628 Prague, Czech Republic.
   [Choi, Jae-Soon; Kim, Mi-Young; Pihl, Josh A.; Partridge, William P.] Oak Ridge Natl Lab, Fuels Engines & Emiss Res Ctr, Knoxville, TN 37932 USA.
RP Koci, P (reprint author), Prague Inst Chem Technol, Dept Chem Engn, CR-16628 Prague, Czech Republic.
EM petr.koci@vscht.cz
OI Choi, Jae-Soon/0000-0002-8162-4207
NR 7
TC 10
Z9 10
U1 2
U2 19
PU SPRINGER/PLENUM PUBLISHERS
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 1022-5528
J9 TOP CATAL
JI Top. Catal.
PD MAY
PY 2013
VL 56
IS 1-8
BP 118
EP 124
DI 10.1007/s11244-013-9939-y
PG 7
WC Chemistry, Applied; Chemistry, Physical
SC Chemistry
GA 134MH
UT WOS:000318213800022
ER

PT J
AU Pihl, J
   Lewis, J
   Toops, T
   Adelman, B
   Derybowski, EM
AF Pihl, Josh A.
   Lewis, Jennifer A.
   Toops, Todd J.
   Adelman, Brad J.
   Derybowski, Ed M.
TI Development of a Surface Area Dependent Rate Expression for Soot
   Oxidation in Diesel Particulate Filters
SO TOPICS IN CATALYSIS
LA English
DT Article; Proceedings Paper
CT 9th International Congress on Catalysis and Automotive Pollution Control
   (CAPoC)
CY AUG 29-31, 2012
CL Brussels, BELGIUM
DE Soot oxidation; Particulate filter; Surface area
ID EXPERIMENTAL MICROKINETIC APPROACH; CATALYTIC-OXIDATION; CERIA/SOOT
   CONTACTS; IMPACT; BEHAVIOR; MATTER
AB We collected soot from diesel engine exhaust on miniature particulate filter samples and evaluated soot oxidation rates on an automated flow reactor system. A series of isothermal pulsed oxidation experiments quantified reaction rates as a function of gas composition, temperature, flow rate, and soot consumption. An O-2 chemisorption method measured the soot active surface area as filter regeneration progressed. We developed a rate law with an explicit dependence on carbon surface area and estimated the associated kinetic parameters from the pulsed oxidation data. The resulting rate expression successfully captures the soot oxidation behavior over a wide range of operating conditions.
C1 [Pihl, Josh A.; Lewis, Jennifer A.; Toops, Todd J.] Oak Ridge Natl Lab, Knoxville, TN 37932 USA.
   [Adelman, Brad J.; Derybowski, Ed M.] Navistar Inc, Melrose Pk, IL 60160 USA.
RP Pihl, J (reprint author), Oak Ridge Natl Lab, 2360 Cherahala Blvd, Knoxville, TN 37932 USA.
EM pihlja@ornl.gov
NR 16
TC 0
Z9 0
U1 1
U2 24
PU SPRINGER/PLENUM PUBLISHERS
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 1022-5528
J9 TOP CATAL
JI Top. Catal.
PD MAY
PY 2013
VL 56
IS 1-8
BP 499
EP 503
DI 10.1007/s11244-013-0005-6
PG 5
WC Chemistry, Applied; Chemistry, Physical
SC Chemistry
GA 134MH
UT WOS:000318213800087
ER

PT J
AU Farren, JD
   Hunter, AH
   DuPont, JN
   Robino, CV
   Kozeschnik, E
   Seidman, DN
AF Farren, J. D.
   Hunter, A. H.
   DuPont, J. N.
   Robino, C. V.
   Kozeschnik, E.
   Seidman, D. N.
TI Microstructural Evolution and Mechanical Properties of Simulated
   Heat-Affected Zones in an Iron-Copper Based Multicomponent Steel
SO WELDING JOURNAL
LA English
DT Article
DE High-Strength Steels; Fracture; Weld Process Simulation
ID CU-BASED STEEL; LOW-CARBON STEELS; ACICULAR FERRITE; COARSENING
   KINETICS; TEMPORAL EVOLUTION; MULTIPHASE SYSTEMS; WELD DEPOSITS;
   ALPHA-FE; PRECIPITATION; SEGREGATION
AB NUCu-140 is a recently developed steel that relies on nano-scale Cu-rich precipitates to achieve yield strength levels in excess of 825 MPa (120 ksi). In order for NUCu-140 to be utilized as a structural material, a comprehensive welding strategy must be developed. Since NUCu-140 is a precipitation-strengthened material, this strategy must include a detailed understanding of the precipitate evolution that occurs in the heat-affected zone (HAZ) as a result of welding thermal cycles. A combination of dilatometry, HAZ simulations, and mechanical testing are presented to determine the mechanical properties that develop in the HAZ of NUCu-140. MatCalc kinetic simulations and Russell-Brown strengthening calculations were conducted to model the observed precipitate and mechanical property trends. The microhardness and tensile testing results reveal that local softening is expected in the HAZ of NUCu-140 welds. MatCalc simulations show that a combination of partial dissolution, full dissolution, and re-precipitation of the Cu-rich precipitates is expected to occur in the various HAZ regions. The predicted precipitate parameters are used as input to the Russell-Brown strengthening model to estimate the changes in strength expected due to changes in precipitate features. The measured and predicted strength levels exhibit very good quantitative agreement for the low-heat-input simulations and reasonable qualitative agreement for the high-heat-input weld simulations.
C1 [Farren, J. D.] USN, Ctr Surface Warfare, Carderock Div, West Bethesda, MD USA.
   [Hunter, A. H.; Seidman, D. N.] Northwestern Univ, Dept Mat Sci & Engn, Evanston, IL 60208 USA.
   [DuPont, J. N.] Lehigh Univ, Dept Mat Sci & Engn, Bethlehem, PA 18015 USA.
   [Robino, C. V.] Sandia Natl Labs, Albuquerque, NM 87185 USA.
   [Kozeschnik, E.] Vienna Univ Technol, Dept Mat Sci & Technol, A-1040 Vienna, Austria.
RP Farren, JD (reprint author), USN, Ctr Surface Warfare, Carderock Div, West Bethesda, MD USA.
EM jnd1@lehigh.edu
RI Seidman, David/B-6697-2009
FU Office of Naval Research [N00014-07-1-0331]
FX The authors gratefully acknowledge financial support of this research by
   the Office of Naval Research through Grant Number N00014-07-1-0331 and
   useful discussions with the program manager, Dr. William Mullins, of the
   Office of Naval Research.
NR 26
TC 1
Z9 1
U1 0
U2 22
PU AMER WELDING SOC
PI MIAMI
PA 550 N W LEJEUNE RD, MIAMI, FL 33126 USA
SN 0043-2296
J9 WELD J
JI Weld. J.
PD MAY
PY 2013
VL 92
IS 5
BP 140S
EP 147S
PG 8
WC Metallurgy & Metallurgical Engineering
SC Metallurgy & Metallurgical Engineering
GA 137WP
UT WOS:000318469200015
ER

PT J
AU Vennerberg, D
   Quirino, R
   Kessler, MR
AF Vennerberg, Danny
   Quirino, Rafael
   Kessler, Michael R.
TI A Novel Microwave-Assisted Carbothermic Route for the Production of
   Copper-Carbon Nanotube Metal Matrix Composites Directly from Copper
   Oxide
SO ADVANCED ENGINEERING MATERIALS
LA English
DT Article
ID TRIBOLOGICAL PROPERTIES; GLASS COMPOSITES; WEAR BEHAVIOR; CU;
   NANOCOMPOSITES; REDUCTION; COATINGS
AB Cu2O was reduced to copper via a microwave-assisted carbothermic route using multi-walled carbon nanotubes (MWCNTs) as the carbon source. The reaction atmosphere as well as the degree of mixing of Cu2O and MWCNTs was varied, and the resulting products were characterized as a function of microwave exposure time. Irradiation of thoroughly mixed Cu2O and MWCNTs under argon for 45s produced Cu-MWCNT composites with high MWCNT loading and high hardness. This new approach for fabricating carbon nanotube-reinforced metal matrix composites eliminates many of the challenges associated with traditional methods while requiring a fraction of the time and energy.
C1 [Vennerberg, Danny; Quirino, Rafael; Kessler, Michael R.] Iowa State Univ, Dept Mat Sci & Engn, Ames, IA 50011 USA.
   [Kessler, Michael R.] Iowa State Univ, Dept Mech Engn, Ames, IA USA.
   [Kessler, Michael R.] US DOE, Ames Lab, Ames, IA 50011 USA.
RP Vennerberg, D (reprint author), Iowa State Univ, Dept Mat Sci & Engn, Ames, IA 50011 USA.
EM mkessler@iastate.edu
RI Kessler, Michael/C-3153-2008
OI Kessler, Michael/0000-0001-8436-3447
FU NSF GRFP
FX DV thanks the NSF GRFP for financial support.
NR 27
TC 6
Z9 6
U1 0
U2 57
PU WILEY-V C H VERLAG GMBH
PI WEINHEIM
PA BOSCHSTRASSE 12, D-69469 WEINHEIM, GERMANY
SN 1438-1656
J9 ADV ENG MATER
JI Adv. Eng. Mater.
PD MAY
PY 2013
VL 15
IS 5
BP 366
EP 372
DI 10.1002/adem.201200250
PG 7
WC Materials Science, Multidisciplinary
SC Materials Science
GA 135UI
UT WOS:000318313600011
ER

PT J
AU Shi, XJ
   Wang, B
   Liu, XH
   Wang, MH
AF Shi Xiangjun
   Wang Bin
   Liu, Xiaohong
   Wang, Minghuai
TI Two-moment bulk stratiform cloud microphysics in the grid-point
   atmospheric model of IAP LASG (GAMIL)
SO ADVANCES IN ATMOSPHERIC SCIENCES
LA English
DT Article
DE two-moment cloud microphysics scheme; atmospheric model
ID MICROWAVE IMAGER SSM/I; GLOBAL CLIMATE MODELS; MIXED-PHASE CLOUDS;
   ICE-NUCLEATION; LIQUID WATER; AEROSOL PROPERTIES; VERSION-3 CAM3; CIRRUS
   CLOUDS; PARAMETERIZATION; SCHEME
AB A two-moment bulk stratiform microphysics scheme, including recently developed physically-based droplet activation/ice nucleation parameterizations has been implemented into the Grid-point Atmospheric Model of IAP LASG (GAMIL) as an effort to enhance the model's capability to simulate aerosol indirect effects. Unlike the previous one-moment cloud microphysics scheme, the new scheme produces a reasonable representation of cloud particle size and number concentration. This scheme captures the observed spatial variations in cloud droplet number concentrations. Simulated ice crystal number concentrations in cirrus clouds qualitatively agree with in situ observations. The longwave and shortwave cloud forcings are in better agreement with observations. Sensitivity tests show that the column cloud droplet number concentrations calculated from two different droplet activation parameterizations are similar. However, ice crystal number concentration in mixed-phased clouds is sensitive to different heterogeneous ice nucleation formulations. The simulation with high ice crystal number concentration in mixed-phase clouds has less liquid water path and weaker cloud forcing. Furthermore, ice crystal number concentration in cirrus clouds is sensitive to different ice nucleation parameterizations. Sensitivity tests also suggest that the impact of pre-existing ice crystals on homogeneous freezing in old clouds should be taken into account.
C1 [Shi Xiangjun; Wang Bin] Chinese Acad Sci, Inst Atmospher Phys, State Key Lab Numer Modeling Atmospher Sci & Geop, Beijing 100029, Peoples R China.
   [Shi Xiangjun] Hebei Key Lab Meteorol & Ecoenvironm, Shijiazhuang 050021, Peoples R China.
   [Shi Xiangjun] Hebei Climate Ctr, Shijiazhuang 050021, Peoples R China.
   [Liu, Xiaohong; Wang, Minghuai] Pacific NW Natl Lab, Richland, WA 99352 USA.
RP Shi, XJ (reprint author), Chinese Acad Sci, Inst Atmospher Phys, State Key Lab Numer Modeling Atmospher Sci & Geop, Beijing 100029, Peoples R China.
EM xiangjun.10@gmail.com
RI Wang, Minghuai/E-5390-2011; AAS, AAS/C-2949-2014; Liu,
   Xiaohong/E-9304-2011; Wang, Bin/P-9121-2014; Wang, Bin/D-9724-2012
OI Wang, Minghuai/0000-0002-9179-228X; Liu, Xiaohong/0000-0002-3994-5955;
   Wang, Bin/0000-0001-7374-3786; Wang, Bin/0000-0002-3133-7197
FU National Natural Science Funds of China [41205071]; Ministry of Science
   and Technology of China [2011CB309704]; U.S. Department of Energy (DOE),
   Office of Science, Earth System Modeling Program
FX The authors thank Q. HAN for supplying AVHRR data. This work was
   supported by the National Natural Science Funds of China (Grant No.
   41205071) and the Ministry of Science and Technology of China for the
   National Basic Research Program of China (973 Program: Grant No.
   2011CB309704). X. Liu also would like to acknowledge the funding support
   from the U.S. Department of Energy (DOE), Office of Science, Earth
   System Modeling Program.
NR 64
TC 2
Z9 2
U1 1
U2 20
PU SCIENCE PRESS
PI BEIJING
PA 16 DONGHUANGCHENGGEN NORTH ST, BEIJING 100717, PEOPLES R CHINA
SN 0256-1530
J9 ADV ATMOS SCI
JI Adv. Atmos. Sci.
PD MAY
PY 2013
VL 30
IS 3
BP 868
EP 883
DI 10.1007/s00376-012-2072-1
PG 16
WC Meteorology & Atmospheric Sciences
SC Meteorology & Atmospheric Sciences
GA 128OQ
UT WOS:000317779000025
ER

PT J
AU de Rond, T
   Peralta-Yahya, P
   Cheng, XL
   Northen, TR
   Keasling, JD
AF de Rond, Tristan
   Peralta-Yahya, Pamela
   Cheng, Xiaoliang
   Northen, Trent R.
   Keasling, Jay D.
TI Versatile synthesis of probes for high-throughput enzyme activity
   screening
SO ANALYTICAL AND BIOANALYTICAL CHEMISTRY
LA English
DT Article
DE Enzyme assays; High-throughput; Nimzyme; Nanostructure-initiator mass
   spectrometry; Chloramphenicol acetyltransferase
ID INITIATOR MASS-SPECTROMETRY; ACTIVITY ASSAY; NIMS
AB Mass spectrometry based technologies are promising as generalizable high-throughput assays for enzymatic activity. In one such technology, a specialized enzyme substrate probe is presented to a biological mixture potentially exhibiting enzymatic activity, followed by an in situ enrichment step using fluorous interactions and nanostructure-initiator mass spectrometry. This technology, known as Nimzyme, shows great potential but is limited by the need to synthesize custom substrate analogs. We describe a synthetic route that simplifies the production of these probes by fashioning their perfluorinated invariant portion as an alkylating agent. This way, a wide variety of compounds can be effectively transformed into enzyme activity probes. As a proof of principle, a chloramphenicol analog synthesized according to this methodology was used to detect chloramphenicol acetyltransferase activity in cell lysate. This verifies the validity of the synthetic strategy employed and constitutes the first reported application of Nimzyme to a non-carbohydrate-active enzyme. The simplified synthetic approach presented here may help advance the application of mass spectrometry to high-throughput enzyme activity determination.
C1 [de Rond, Tristan] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA.
   [de Rond, Tristan; Peralta-Yahya, Pamela; Keasling, Jay D.] Univ Calif Berkeley, Calif Inst Quantitat Biosci, Berkeley, CA 94720 USA.
   [Peralta-Yahya, Pamela; Cheng, Xiaoliang; Northen, Trent R.; Keasling, Jay D.] Joint BioEnergy Inst, Emeryville, CA 94608 USA.
   [Cheng, Xiaoliang; Northen, Trent R.; Keasling, Jay D.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Phys Biosci Div, Berkeley, CA 94720 USA.
   [Cheng, Xiaoliang; Northen, Trent R.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Life Sci, Berkeley, CA 94720 USA.
   [Keasling, Jay D.] Univ Calif Berkeley, Dept Chem & Biomol Engn, Berkeley, CA 94720 USA.
   [Keasling, Jay D.] Univ Calif Berkeley, Dept Bioengn, Berkeley, CA 94720 USA.
RP Keasling, JD (reprint author), Univ Calif Berkeley, Dept Chem & Biomol Engn, Berkeley, CA 94720 USA.
EM keasling@berkeley.edu
RI Keasling, Jay/J-9162-2012; 
OI Keasling, Jay/0000-0003-4170-6088; Northen, Trent/0000-0001-8404-3259
FU National Institutes of Health [1RC1GM090980-01]; U.S. Department of
   Energy, Office of Science, Office of Biological and Environmental
   Research [DE-AC02-05CH11231]
FX This publication was made possible by grant number 1RC1GM090980-01 from
   the National Institutes of Health. Its contents are solely the
   responsibility of the authors and do not necessarily represent the
   official views of the NIH. This work was part of the DOE Joint BioEnergy
   Institute (http://www.jbei.org), supported by the U.S. Department of
   Energy, Office of Science, Office of Biological and Environmental
   Research, through contract DE-AC02-05CH11231 between Lawrence Berkeley
   National Laboratory and the U.S. Department of Energy.
NR 7
TC 4
Z9 4
U1 1
U2 45
PU SPRINGER HEIDELBERG
PI HEIDELBERG
PA TIERGARTENSTRASSE 17, D-69121 HEIDELBERG, GERMANY
SN 1618-2642
J9 ANAL BIOANAL CHEM
JI Anal. Bioanal. Chem.
PD MAY
PY 2013
VL 405
IS 14
BP 4969
EP 4973
DI 10.1007/s00216-013-6888-z
PG 5
WC Biochemical Research Methods; Chemistry, Analytical
SC Biochemistry & Molecular Biology; Chemistry
GA 135TW
UT WOS:000318312400032
PM 23568610
ER

PT J
AU Placella, SA
   Firestone, MK
AF Placella, Sarah A.
   Firestone, Mary K.
TI Transcriptional Response of Nitrifying Communities to Wetting of Dry
   Soil
SO APPLIED AND ENVIRONMENTAL MICROBIOLOGY
LA English
DT Article
ID AMMONIA-OXIDIZING ARCHAEA; COMPLETE GENOME SEQUENCE;
   NITROSOMONAS-EUROPAEA; ANNUAL GRASSLAND; NITRITE ACCUMULATION; OXIDE
   GAS; NITROGEN; BACTERIA; CARBON; DYNAMICS
AB The first rainfall following a severe dry period provides an abrupt water potential change that is both an acute physiological stress and a defined stimulus for the reawakening of soil microbial communities. We followed the responses of indigenous communities of ammonia-oxidizing bacteria, ammonia-oxidizing archaea, and nitrite-oxidizing bacteria to the addition of water to laboratory incubations of soils taken from two California annual grasslands following a typically dry Mediterranean summer. By quantifying transcripts for a subunit of bacterial and archaeal ammonia monooxygenases (amoA) and a bacterial nitrite oxidoreductase (nxrA) in soil from 15 min to 72 h after water addition, we identified transcriptional response patterns for each of these three groups of nitrifiers. An increase in quantity of bacterial amoA transcripts was detectable within 1 h of wet-up and continued until the size of the ammonium pool began to decrease, reflecting a possible role of transcription in upregulation of nitrification after drought-induced stasis. In one soil, the pulse of amoA transcription lasted for less than 24 h, demonstrating the transience of transcriptional pools and the tight coupling of transcription to the local soil environment. Analysis of 16S rRNA using a high-density microarray suggested that nitrite-oxidizing Nitrobacter spp. respond in tandem with ammonia-oxidizing bacteria while nitrite-oxidizing Nitrospina spp. and Nitrospira bacteria may not. Archaeal ammonia oxidizers may respond slightly later than bacterial ammonia oxidizers but may maintain elevated transcription longer. Despite months of desiccation-induced inactivation, we found rapid transcriptional response by all three groups of soil nitrifiers.
C1 [Placella, Sarah A.; Firestone, Mary K.] Univ Calif Berkeley, Dept Environm Sci Policy & Management, Berkeley, CA 94720 USA.
   [Firestone, Mary K.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
RP Placella, SA (reprint author), Michigan State Univ, WK Kellogg Biol Stn, Hickory Corners, MI 49060 USA.
EM sarah.placella@gmail.com
FU U.S. DOE [DE-AC02-05CH11231]; Terrestrial Ecosystem Sciences program;
   Berkeley Atmospheric Sciences Center; Department of Energy Global Change
   Education Program Graduate Research Environmental Fellowship; Department
   of Environmental Science, Policy and Management
FX Part of this work was completed at Lawrence Berkeley National Laboratory
   under contract no. DE-AC02-05CH11231 with funding from the U.S. DOE
   Program for Ecosystem Research and the Terrestrial Ecosystem Sciences
   program. Support was also received from the Berkeley Atmospheric
   Sciences Center. Support to S.A.P. came from a Department of Energy
   Global Change Education Program Graduate Research Environmental
   Fellowship and a James P. Bennett Fellowship from the Department of
   Environmental Science, Policy and Management.
NR 59
TC 35
Z9 37
U1 5
U2 102
PU AMER SOC MICROBIOLOGY
PI WASHINGTON
PA 1752 N ST NW, WASHINGTON, DC 20036-2904 USA
SN 0099-2240
J9 APPL ENVIRON MICROB
JI Appl. Environ. Microbiol.
PD MAY
PY 2013
VL 79
IS 10
BP 3294
EP 3302
DI 10.1128/AEM.00404-13
PG 9
WC Biotechnology & Applied Microbiology; Microbiology
SC Biotechnology & Applied Microbiology; Microbiology
GA 132AJ
UT WOS:000318039800019
PM 23524666
ER

PT J
AU Bischoff, C
   Brizius, A
   Buder, I
   Chinone, Y
   Cleary, K
   Dumoulin, RN
   Kusaka, A
   Monsalve, R
   Naess, SK
   Newburgh, LB
   Nixon, G
   Reeves, R
   Smith, KM
   Vanderlinde, K
   Wehus, IK
   Bogdan, M
   Bustos, R
   Church, SE
   Davis, R
   Dickinson, C
   Eriksen, HK
   Gaier, T
   Gundersen, JO
   Hasegawa, M
   Hazumi, M
   Holler, C
   Huffenberger, KM
   Imbriale, WA
   Ishidoshiro, K
   Jones, ME
   Kangaslahti, P
   Kapner, DJ
   Lawrence, CR
   Leitch, EM
   Limon, M
   McMahon, JJ
   Miller, AD
   Nagai, M
   Nguyen, H
   Pearson, TJ
   Piccirillo, L
   Radford, SJE
   Readhead, ACS
   Richards, JL
   Samtleben, D
   Seiffert, M
   Shepherd, MC
   Staggs, ST
   Tajima, O
   Thompson, KL
   Williamson, R
   Winstein, B
   Wollack, EJ
   Zwart, JTL
AF Bischoff, C.
   Brizius, A.
   Buder, I.
   Chinone, Y.
   Cleary, K.
   Dumoulin, R. N.
   Kusaka, A.
   Monsalve, R.
   Naess, S. K.
   Newburgh, L. B.
   Nixon, G.
   Reeves, R.
   Smith, K. M.
   Vanderlinde, K.
   Wehus, I. K.
   Bogdan, M.
   Bustos, R.
   Church, S. E.
   Davis, R.
   Dickinson, C.
   Eriksen, H. K.
   Gaier, T.
   Gundersen, J. O.
   Hasegawa, M.
   Hazumi, M.
   Holler, C.
   Huffenberger, K. M.
   Imbriale, W. A.
   Ishidoshiro, K.
   Jones, M. E.
   Kangaslahti, P.
   Kapner, D. J.
   Lawrence, C. R.
   Leitch, E. M.
   Limon, M.
   McMahon, J. J.
   Miller, A. D.
   Nagai, M.
   Nguyen, H.
   Pearson, T. J.
   Piccirillo, L.
   Radford, S. J. E.
   Readhead, A. C. S.
   Richards, J. L.
   Samtleben, D.
   Seiffert, M.
   Shepherd, M. C.
   Staggs, S. T.
   Tajima, O.
   Thompson, K. L.
   Williamson, R.
   Winstein, B.
   Wollack, E. J.
   Zwart, J. T. L.
CA QUIET Collaboration
TI THE Q/U IMAGING EXPERIMENT INSTRUMENT
SO ASTROPHYSICAL JOURNAL
LA English
DT Article
DE cosmic background radiation; cosmology: observations; instrumentation:
   detectors; instrumentation: polarimeters; telescopes
ID MICROWAVE-ANISOTROPY-PROBE; BACKGROUND POLARIZATION; WMAP OBSERVATIONS;
   QUIET EXPERIMENT; ANGULAR SCALE; SUBMILLIMETER; MILLIMETER; DESIGN;
   RADIOMETERS; POLARIMETRY
AB The Q/U Imaging ExperimenT (QUIET) is designed to measure polarization in the cosmic microwave background, targeting the imprint of inflationary gravitational waves at large angular scales(similar to 1 degrees). Between 2008 October and 2010 December, two independent receiver arrays were deployed sequentially on a 1.4 m side-fed Dragonian telescope. The polarimeters that form the focal planes use a compact design based on high electron mobility transistors (HEMTs) that provides simultaneous measurements of the Stokes parameters Q, U, and I in a single module. The 17-element Q-band polarimeter array, with a central frequency of 43.1 GHz, has the best sensitivity (69 mu Ks(1/2)) and the lowest instrumental systematic errors ever achieved in this band, contributing to the tensor-to-scalar ratio at r < 0.1. The 84-element W-band polarimeter array has a sensitivity of 87 mu Ks(1/2) at a central frequency of 94.5 GHz. It has the lowest systematic errors to date, contributing at r < 0.01. The two arrays together cover multipoles in the range l similar to 25-975. These are the largest HEMT-based arrays deployed to date. This article describes the design, calibration, performance, and sources of systematic error of the instrument.
C1 [Bischoff, C.; Brizius, A.; Buder, I.; Kusaka, A.; Smith, K. M.; Bogdan, M.; Kapner, D. J.; Tajima, O.; Williamson, R.; Winstein, B.] Univ Chicago, Enrico Fermi Inst, Dept Phys, Kavli Inst Cosmol Phys, Chicago, IL 60637 USA.
   [Bischoff, C.; Buder, I.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA.
   [Brizius, A.; Samtleben, D.] Max Planck Inst Radioastron, D-53121 Bonn, Germany.
   [Chinone, Y.; Hasegawa, M.; Hazumi, M.; Ishidoshiro, K.; Nagai, M.; Tajima, O.] High Energy Accelerator Res Org KEK, Tsukuba, Ibaraki 3050801, Japan.
   [Chinone, Y.] Tohoku Univ, Grad Sch Sci, Astron Inst, Aoba Ku, Sendai, Miyagi 9808578, Japan.
   [Cleary, K.; Reeves, R.; Gaier, T.; Pearson, T. J.; Radford, S. J. E.; Readhead, A. C. S.; Richards, J. L.; Shepherd, M. C.; Williamson, R.] CALTECH, Cahill Ctr Astron & Astrophys, Pasadena, CA 91125 USA.
   [Dumoulin, R. N.; Newburgh, L. B.; Limon, M.; Miller, A. D.; Williamson, R.; Zwart, J. T. L.] Columbia Univ, Dept Phys, New York, NY 10027 USA.
   [Dumoulin, R. N.; Newburgh, L. B.; Limon, M.; Miller, A. D.; Williamson, R.; Zwart, J. T. L.] Columbia Univ, Columbia Astrophys Lab, New York, NY 10027 USA.
   [Kusaka, A.; Newburgh, L. B.; Nixon, G.; Smith, K. M.; Staggs, S. T.] Princeton Univ, Joseph Henry Labs Phys, Princeton, NJ 08544 USA.
   [Monsalve, R.; Bustos, R.; Gundersen, J. O.; Huffenberger, K. M.] Univ Miami, Dept Phys, Coral Gables, FL 33146 USA.
   [Monsalve, R.] Arizona State Univ, Sch Earth & Space Explorat, Tempe, AZ 85287 USA.
   [Naess, S. K.; Eriksen, H. K.] Univ Oslo, Inst Theoret Astrophys, N-0315 Oslo, Norway.
   [Vanderlinde, K.] McGill Univ, Dept Phys, Montreal, PQ H3A 2T8, Canada.
   [Vanderlinde, K.] Univ Toronto, Dunlap Inst Astron & Astrophys, Toronto, ON, Canada.
   [Vanderlinde, K.] Univ Toronto, Dept Astron & Astrophys, Toronto, ON, Canada.
   [Wehus, I. K.] Univ Oslo, Dept Phys, N-0316 Oslo, Norway.
   [Wehus, I. K.; Holler, C.; Jones, M. E.] Univ Oxford, Dept Astrophys, Oxford OX1 3RH, England.
   [Bustos, R.] Univ Chile, Dept Astron, Santiago, Chile.
   [Bustos, R.] Univ Concepcion, Dept Astron, Concepcion, Chile.
   [Church, S. E.; Thompson, K. L.] Stanford Univ, Kavli Inst Particle Astrophys & Cosmol, Stanford, CA 94305 USA.
   [Church, S. E.; Thompson, K. L.] Stanford Univ, Dept Phys, Stanford, CA 94305 USA.
   [Davis, R.; Dickinson, C.; Piccirillo, L.] Univ Manchester, Ctr Astrophys, Jodrell Bank, Sch Phys & Astron, Manchester M13 9PL, Lancs, England.
   [Eriksen, H. K.] Univ Oslo, Ctr Math Applicat, N-0316 Oslo, Norway.
   [Gaier, T.; Imbriale, W. A.; Kangaslahti, P.; Lawrence, C. R.; Leitch, E. M.; Seiffert, M.] CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA.
   [Kapner, D. J.] Micro Encoder Inc, Kirkland, WA 98034 USA.
   [McMahon, J. J.] Univ Michigan, Dept Phys, Ann Arbor, MI 48109 USA.
   [Nguyen, H.] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA.
   [Samtleben, D.] Nikhef, Amsterdam, Netherlands.
   [Wollack, E. J.] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA.
   [Zwart, J. T. L.] Univ Western Cape, Dept Phys, ZA-7535 Bellville, South Africa.
RP Bischoff, C (reprint author), Univ Chicago, Enrico Fermi Inst, Dept Phys, Kavli Inst Cosmol Phys, Chicago, IL 60637 USA.
EM newburgh@princeton.edu
RI Reeves, Rodrigo/H-2812-2014; Williamson, Ross/H-1734-2015; Pearson,
   Timothy/N-2376-2015; Wollack, Edward/D-4467-2012; 
OI radford, simon/0000-0001-9113-1660; Huffenberger,
   Kevin/0000-0001-7109-0099; Bischoff, Colin/0000-0001-9185-6514; Zwart,
   Jonathan/0000-0002-4967-946X; Chinone, Yuji/0000-0002-3266-857X; Reeves,
   Rodrigo/0000-0001-5704-271X; Williamson, Ross/0000-0002-6945-2975;
   Pearson, Timothy/0000-0001-5213-6231; Wollack,
   Edward/0000-0002-7567-4451; Limon, Michele/0000-0002-5900-2698
FU NSF [AST-0506648, PHY-0855887, PHY-0355328, AST-0448909, AST-1010016,
   PHY-0551142]; KAKENHI [20244041, 20740158, 21111002]; KIPAC Enterprise;
   Strategic Alliance for the Implementation of New Technologies (SAINT);
   Office of Science of the U.S. Department of Energy [DE-AC02-05CH11231];
   Fermilab; Kavli Institute for Cosmological Physics; University of
   Chicago; JPL RTD program; STFC Advanced Fellowship; ERC IRG; CONICYT
   [PFB-06]; ALMA-Conicyt [31070015]; Sloan foundation; ERC;  [PRODEX
   C90284]
FX Support for the QUIET instrument and operation comes through the NSF
   cooperative agreement AST-0506648. Support was also provided by NSF
   awards PHY-0855887, PHY-0355328, AST-0448909, AST-1010016, and
   PHY-0551142; KAKENHI 20244041, 20740158, and 21111002; PRODEX C90284; a
   KIPAC Enterprise grant; and by the Strategic Alliance for the
   Implementation of New Technologies (SAINT). This research used resources
   of the National Energy Research Scientific Computing Center, which is
   supported by the Office of Science of the U.S. Department of Energy
   under Contract No. DE-AC02-05CH11231.; Some work was performed on the
   Joint Fermilab-KICP Supercomputing Cluster, supported by grants from
   Fermilab, the Kavli Institute for Cosmological Physics, and the
   University of Chicago. Some work was performed on the Titan Cluster,
   owned and maintained by the University of Oslo and NOTUR (the Norwegian
   High Performance Computing Consortium), and on the Central Computing
   System, owned and operated by the Computing Research Center at KEK.
   Portions of this work were performed at the Jet Propulsion Laboratory
   (JPL) and California Institute of Technology, operating under a contract
   with the National Aeronautics and Space Administration. The Q-band
   modules were developed using funding from the JPL R&TD program. We
   acknowledge the Northrop Grumman Corporation for collaboration in the
   development and fabrication of HEMT-based cryogenic
   temperature-compatible MMICs.; C.D. acknowledges an STFC Advanced
   Fellowship and an ERC IRG grant under FP7. R. B. acknowledges support
   from CONICYT project Basal PFB-06 and ALMA-Conicyt 31070015. A. D. M.
   acknowledges a Sloan foundation fellowship. H. K. E. acknowledges an ERC
   Starting Grant under FP7.
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PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0004-637X
J9 ASTROPHYS J
JI Astrophys. J.
PD MAY 1
PY 2013
VL 768
IS 1
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DI 10.1088/0004-637X/768/1/9
PG 28
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 130ZT
UT WOS:000317960500009
ER

PT J
AU Martini, P
   Miller, ED
   Brodwin, M
   Stanford, SA
   Gonzalez, AH
   Bautz, M
   Hickox, RC
   Stern, D
   Eisenhardt, PR
   Galametz, A
   Norman, D
   Jannuzi, BT
   Dey, A
   Murray, S
   Jones, C
   Brown, MJI
AF Martini, Paul
   Miller, E. D.
   Brodwin, M.
   Stanford, S. A.
   Gonzalez, Anthony H.
   Bautz, M.
   Hickox, R. C.
   Stern, D.
   Eisenhardt, P. R.
   Galametz, A.
   Norman, D.
   Jannuzi, B. T.
   Dey, A.
   Murray, S.
   Jones, C.
   Brown, M. J. I.
TI THE CLUSTER AND FIELD GALAXY ACTIVE GALACTIC NUCLEUS FRACTION AT
   z=1-1.5: EVIDENCE FOR A REVERSAL OF THE LOCAL ANTICORRELATION BETWEEN
   ENVIRONMENT AND AGN FRACTION
SO ASTROPHYSICAL JOURNAL
LA English
DT Article
DE galaxies: active; galaxies: clusters: general; galaxies: evolution;
   X-rays: galaxies; X-rays: galaxies: clusters; X-rays: general
ID SUPERMASSIVE BLACK-HOLES; DIGITAL-SKY-SURVEY; IRAC SHALLOW SURVEY;
   SIMILAR-TO 1; CHANDRA MULTIWAVELENGTH PROJECT; ULTRALUMINOUS INFRARED
   GALAXIES; FORMATION-DENSITY RELATION; EMISSION-LINE GALAXIES;
   HUBBLE-SPACE-TELESCOPE; LOW-REDSHIFT CLUSTERS
AB The fraction of cluster galaxies that host luminous active galactic nuclei (AGNs) is an important probe of AGN fueling processes, the cold interstellar medium at the centers of galaxies, and how tightly black holes and galaxies co-evolve. We present a new measurement of the AGN fraction in a sample of 13 clusters of galaxies (M >= 10(14) M-circle dot) at 1 < z < 1.5 selected from the Spitzer/IRAC Shallow Cluster Survey, as well as the field fraction in the immediate vicinity of these clusters, and combine these data with measurements from the literature to quantify the relative evolution of cluster and field AGN from the present to z similar to 3. We estimate that the cluster AGN fraction at 1 < z < 1.5 is f(A) = 3.0(-1.4)(+2.4)% for AGNs with a rest-frame, hard X-ray luminosity greater than L-X,L- H >= 10(44) erg s(-1). This fraction is measured relative to all cluster galaxies more luminous than M-3.6*(z)+ 1, where M-3.6*(z) is the absolute magnitude of the break in the galaxy luminosity function at the cluster redshift in the IRAC 3.6 mu m bandpass. The cluster AGN fraction is 30 times greater than the 3 sigma upper limit on the value for AGNs of similar luminosity at z similar to 0.25, as well as more than an order of magnitude greater than the AGN fraction at z similar to 0.75. AGNs with L-X,L- H >= 10(43) erg s(-1) exhibit similarly pronounced evolution with redshift. In contrast to the local universe, where the luminous AGN fraction is higher in the field than in clusters, the X-ray and MIR-selected AGN fractions in the field and clusters are consistent at 1 < z < 1.5. This is evidence that the cluster AGN population has evolved more rapidly than the field population from z similar to 1.5 to the present. This environment-dependent AGN evolution mimics the more rapid evolution of star-forming galaxies in clusters relative to the field.
C1 [Martini, Paul] Ohio State Univ, Dept Astron, Columbus, OH 43210 USA.
   [Martini, Paul] Ohio State Univ, Ctr Cosmol & Astroparticle Phys, Columbus, OH 43210 USA.
   [Miller, E. D.; Bautz, M.] MIT, Kavli Inst Astrophys & Space Res, Cambridge, MA 02139 USA.
   [Brodwin, M.] Univ Missouri, Dept Phys & Astron, Kansas City, MO 64110 USA.
   [Stanford, S. A.] Univ Calif Davis, Dept Phys, Davis, CA 95616 USA.
   [Stanford, S. A.] Lawrence Livermore Natl Lab, Inst Geophys & Planetary Phys, Livermore, CA 94551 USA.
   [Gonzalez, Anthony H.] Univ Florida, Dept Astron, Gainesville, FL 32611 USA.
   [Hickox, R. C.] Dartmouth Coll, Dept Phys & Astron, Wilder Lab 6127, Hanover, NH 03755 USA.
   [Stern, D.; Eisenhardt, P. R.] CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA.
   [Galametz, A.] INAF Osservatorio Roma, I-00040 Monte Porzio Catone, Italy.
   [Norman, D.; Dey, A.] Natl Opt Astron Observ, Tucson, AZ 85719 USA.
   [Jannuzi, B. T.] Univ Arizona, Dept Astron, Tucson, AZ 85721 USA.
   [Jannuzi, B. T.] Univ Arizona, Steward Observ, Tucson, AZ 85721 USA.
   [Murray, S.; Jones, C.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA.
   [Brown, M. J. I.] Monash Univ, Sch Phys, Clayton, Vic 3800, Australia.
RP Martini, P (reprint author), North Amer ALMA Sci Ctr, Charlottesville, VA 22903 USA.
EM martini@astronomy.ohio-state.edu
RI Brown, Michael/B-1181-2015
OI Brown, Michael/0000-0002-1207-9137
FU U.S. Department of Energy by Lawrence Livermore National Laboratory
   [DE-AC52-07NA27344]; National Aeronautics and Space Administration
   through Chandra Award [GO9-0150A]; National Aeronautics Space
   Administration [NAS8-03060]
FX We thank Daryl Haggard for calculating the field AGN fraction based on
   our AGN and galaxy luminosity thresholds. We also appreciate a
   thoughtful and helpful review from the referee. P. M. appreciates
   support from the sabbatical visitor program at the North American ALMA
   Science Center (NAASC) at NRAO and the hospitality of both the NAASC and
   the University of Virginia while this work was completed. The work of P.
   R. M. E. and D. S. was carried out at the Jet Propulsion Laboratory,
   California Institute of Technology, under a contract with NASA. Part of
   this work was performed under the auspices of the U.S. Department of
   Energy by Lawrence Livermore National Laboratory under Contract
   DE-AC52-07NA27344. Support for this work was provided by the National
   Aeronautics and Space Administration through Chandra Award Number
   GO9-0150A issued by the Chandra X-Ray Observatory Center, which is
   operated by the Smithsonian Astrophysical Observatory for and on behalf
   of the National Aeronautics Space Administration under contract
   NAS8-03060.
NR 117
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SN 0004-637X
J9 ASTROPHYS J
JI Astrophys. J.
PD MAY 1
PY 2013
VL 768
IS 1
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DI 10.1088/0004-637X/768/1/1
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SC Astronomy & Astrophysics
GA 130ZT
UT WOS:000317960500001
ER

PT J
AU Temim, T
   Slane, P
   Castro, D
   Plucinsky, PP
   Gelfand, J
   Dickel, JR
AF Temim, Tea
   Slane, Patrick
   Castro, Daniel
   Plucinsky, Paul P.
   Gelfand, Joseph
   Dickel, John R.
TI HIGH-ENERGY EMISSION FROM THE COMPOSITE SUPERNOVA REMNANT MSH 15-56
SO ASTROPHYSICAL JOURNAL
LA English
DT Article
DE gamma rays: ISM; ISM: individual objects (MSH 15-56, G326.1-1.8); ISM:
   supernova remnants; pulsars: general; X-rays: ISM
ID LARGE-AREA TELESCOPE; PULSAR WIND NEBULA; CHANDRA OBSERVATIONS;
   EVOLUTION; CATALOG; G326.3-1.8; MODEL; RAY
AB MSH 15-56 (G326.3-1.8) is a composite supernova remnant (SNR) that consists of an SNR shell and a displaced pulsar wind nebula (PWN) in the radio. We present XMM-Newton and Chandra X-ray observations of the remnant that reveal a compact source at the tip of the radio PWN and complex structures that provide evidence for mixing of the supernova (SN) ejecta with PWN material following a reverse shock interaction. The X-ray spectra are well fitted by a non-thermal power-law model whose photon index steepens with distance from the presumed pulsar, and a thermal component with an average temperature of 0.55 keV. The enhanced abundances of silicon and sulfur in some regions, and the similar temperature and ionization timescale, suggest that much of the X-ray emission can be attributed to SN ejecta that have either been heated by the reverse shock or swept up by the PWN. We find one region with a lower temperature of 0.3 keV that appears to be in ionization equilibrium. Assuming the Sedov model, we derive a number of SNR properties, including an age of 16,500 yr. Modeling of the gamma-ray emission detected by Fermi shows that the emission may originate from the reverse shock-crushed PWN.
C1 [Temim, Tea] NASA, Goddard Space Flight Ctr, Observat Cosmol Lab, Greenbelt, MD 20771 USA.
   [Temim, Tea] Oak Ridge Associated Univ, Oak Ridge, TN 37831 USA.
   [Slane, Patrick; Plucinsky, Paul P.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA.
   [Castro, Daniel] MIT Kavli Ctr Astrophys & Space Res, Cambridge, MA 02139 USA.
   [Gelfand, Joseph] New York Univ Abu Dhabi, Abu Dhabi, U Arab Emirates.
   [Dickel, John R.] Univ New Mexico, Dept Phys & Astron, Albuquerque, NM 87131 USA.
RP Temim, T (reprint author), NASA, Goddard Space Flight Ctr, Observat Cosmol Lab, Code 665, Greenbelt, MD 20771 USA.
EM tea.temim@nasa.gov
RI Gelfand, Joseph/F-1110-2015; 
OI Gelfand, Joseph/0000-0003-4679-1058; Temim, Tea/0000-0001-7380-3144
FU NASA; NASA [NAS8-03060, NNX11AQ09G]
FX T.T. was supported by an appointment to the NASA Postdoctoral Program at
   the Goddard Space Flight Center, administered by Oak Ridge Associated
   Universities through a contract with NASA. P. S. and P. P. acknowledge
   partial support from NASA contract NAS8-03060, and P. S. acknowledges
   partial support from NASA grant NNX11AQ09G.
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PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0004-637X
J9 ASTROPHYS J
JI Astrophys. J.
PD MAY 1
PY 2013
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DI 10.1088/0004-637X/768/1/61
PG 10
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SC Astronomy & Astrophysics
GA 130ZT
UT WOS:000317960500061
ER

PT J
AU Vikas, S
   Wood-Vasey, WM
   Lundgren, B
   Ross, NP
   Myers, AD
   AlSayyad, Y
   York, DG
   Schneider, DP
   Brinkmann, J
   Bizyaev, D
   Brewington, H
   Ge, J
   Malanushenko, E
   Malanushenko, V
   Muna, D
   Oravetz, D
   Pan, KK
   Paris, I
   Petitjean, P
   Snedden, S
   Shelden, A
   Simmons, A
   Weaver, BA
AF Vikas, Shailendra
   Wood-Vasey, W. Michael
   Lundgren, Britt
   Ross, Nicholas P.
   Myers, Adam D.
   AlSayyad, Yusra
   York, Donald G.
   Schneider, Donald P.
   Brinkmann, J.
   Bizyaev, Dmitry
   Brewington, Howard
   Ge, Jian
   Malanushenko, Elena
   Malanushenko, Viktor
   Muna, Demitri
   Oravetz, Daniel
   Pan, Kaike
   Paris, Isabelle
   Petitjean, Patrick
   Snedden, Stephanie
   Shelden, Alaina
   Simmons, Audrey
   Weaver, Benjamin A.
TI MODERATE CIV ABSORBER SYSTEMS REQUIRE 10(12) M-circle dot DARK MATTER
   HALOS AT z similar to 2.3: A CROSS-CORRELATION STUDY OF CIV ABSORBER
   SYSTEMS AND QUASARS IN SDSS-III BOSS DR9
SO ASTROPHYSICAL JOURNAL
LA English
DT Article
DE intergalactic medium; large-scale structure of universe; quasars:
   absorption lines
ID DIGITAL SKY SURVEY; OSCILLATION SPECTROSCOPIC SURVEY; BARYON
   ACOUSTIC-OSCILLATIONS; ABSORPTION-LINE SYSTEMS; GALAXY REDSHIFT SURVEY;
   2-POINT CORRELATION-FUNCTION; LUMINOUS RED GALAXIES; LARGE-SCALE BIAS;
   C-IV ABSORPTION; DATA RELEASE 9
AB We measure the two-point cross-correlation function of CIV absorber systems and quasars, using spectroscopic data from the Sloan Digital Sky Survey III Baryon Oscillation Spectroscopic Survey (BOSS; Data Release 9). The 19,701 quasars and 6149 CIV "moderate" absorbers, 0.28 angstrom < rest-frame equivalent width (EW) < 5 angstrom, in our study cover a redshift range of 2.1 < z < 2.5 over 3300 deg(2) and represent a factor of two increase in sample size over previous investigations. We find a correlation scale length and slope of the redshift-space cross-correlation function of s(0) = 8.46 +/- 1.24 Mpc, gamma = 1.68 +/- 0.19, in the redshift-space range 10 < s < 100 Mpc. We find a projected cross-correlation function of CIV absorption systems and quasars of r(0) = 7.76 +/- 2.80 Mpc, gamma = 1.74 +/- 0.21. We measure the combined quasar and CIV bias to be b(QSO)bCIV = 8.81 +/- 2.28. Using an estimate of b(QSO) from the quasar auto-correlation function we find b(CIV) = 2.38 +/- 0.62. This b(CIV) implies that EW > 0.28 angstrom CIV absorbers at z similar to 2.3 are typically found in dark matter halos that have masses >= 10(11.3)-10(13.4) M-circle dot at that redshift. The complete BOSS sample will triple the number of both quasars and absorption systems and increase the power of this cross-correlation measurement by a factor of two.
C1 [Vikas, Shailendra; Wood-Vasey, W. Michael] Univ Pittsburgh, Dept Phys & Astron, Pittsburgh Particle Phys Astrophys & Cosmol Ctr P, Pittsburgh, PA 15260 USA.
   [Lundgren, Britt] Yale Univ, Dept Phys, New Haven, CT 06511 USA.
   [Ross, Nicholas P.] Lawrence Berkeley Natl Lab, Berkeley, CA 92420 USA.
   [Myers, Adam D.] Univ Wyoming, Dept Phys & Astron, Laramie, WY 82071 USA.
   [AlSayyad, Yusra] Univ Washington, Dept Astron, Seattle, WA 98195 USA.
   [York, Donald G.] Univ Chicago, Dept Astron, Chicago, IL 60637 USA.
   [York, Donald G.] Univ Chicago, Enrico Fermi Inst, Chicago, IL 60637 USA.
   [Schneider, Donald P.] Penn State Univ, Dept Astron & Astrophys, University Pk, PA 16802 USA.
   [Schneider, Donald P.] Penn State Univ, Inst Gravitat & Cosmos, University Pk, PA 16802 USA.
   [Brinkmann, J.; Bizyaev, Dmitry; Brewington, Howard; Malanushenko, Elena; Malanushenko, Viktor; Oravetz, Daniel; Pan, Kaike; Snedden, Stephanie; Shelden, Alaina; Simmons, Audrey] Apache Point Observ, Sunspot, NM 88349 USA.
   [Ge, Jian] Univ Florida, Dept Astron, Gainesville, FL 32611 USA.
   [Muna, Demitri; Weaver, Benjamin A.] NYU, Ctr Cosmol & Particle Phys, New York, NY 10003 USA.
   [Paris, Isabelle; Petitjean, Patrick] Inst Astrophys, CNRS, UMR7095, UPMC, F-75014 Paris, France.
   [Paris, Isabelle] Univ Chile, Dept Astron, Santiago, Chile.
RP Vikas, S (reprint author), Univ Pittsburgh, Dept Phys & Astron, Pittsburgh Particle Phys Astrophys & Cosmol Ctr P, Pittsburgh, PA 15260 USA.
EM skv4@pitt.edu
FU Alfred P. Sloan Foundation; National Science Foundation; US Department
   of Energy Office of Science; University of Arizona; Brazilian
   Participation Group; Brookhaven National Laboratory; University of
   Cambridge; Carnegie Mellon University; University of Florida; French
   Participation Group; German Participation Group; Harvard University;
   Instituto de Astrofisica de Canarias; Michigan State/Notre Dame/JINA
   Participation Group; Johns Hopkins University; Lawrence Berkeley
   National Laboratory; Max Planck Institute for Astrophysics; Max Planck
   Institute for Extraterrestrial Physics; New Mexico State University; New
   York University; Ohio State University; Pennsylvania State University;
   University of Portsmouth; Princeton University; Spanish Participation
   Group; University of Tokyo; University of Utah; Vanderbilt University;
   University of Virginia; University of Washington; Yale University
FX Funding for SDSS-III has been provided by the Alfred P. Sloan
   Foundation, the Participating Institutions, the National Science
   Foundation, and the US Department of Energy Office of Science. The
   SDSS-III Web site is http://www.sdss3.org/.; SDSS-III is managed by the
   Astrophysical Research Consortium for the Participating Institutions of
   the SDSS-III Collaboration including the University of Arizona, the
   Brazilian Participation Group, Brookhaven National Laboratory,
   University of Cambridge, Carnegie Mellon University, University of
   Florida, the French Participation Group, the German Participation Group,
   Harvard University, the Instituto de Astrofisica de Canarias, the
   Michigan State/Notre Dame/JINA Participation Group, Johns Hopkins
   University, Lawrence Berkeley National Laboratory, Max Planck Institute
   for Astrophysics, Max Planck Institute for Extraterrestrial Physics, New
   Mexico State University, New York University, Ohio State University,
   Pennsylvania State University, University of Portsmouth, Princeton
   University, the Spanish Participation Group, University of Tokyo,
   University of Utah, Vanderbilt University, University of Virginia,
   University of Washington, and Yale University.
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PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0004-637X
EI 1538-4357
J9 ASTROPHYS J
JI Astrophys. J.
PD MAY 1
PY 2013
VL 768
IS 1
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DI 10.1088/0004-637X/768/1/38
PG 14
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SC Astronomy & Astrophysics
GA 130ZT
UT WOS:000317960500038
ER

PT J
AU Whalen, DJ
   Joggerst, CC
   Fryer, CL
   Stiavelli, M
   Heger, A
   Holz, DE
AF Whalen, Daniel J.
   Joggerst, Candace C.
   Fryer, Chris L.
   Stiavelli, Massimo
   Heger, Alexander
   Holz, Daniel E.
TI FINDING THE FIRST COSMIC EXPLOSIONS. II. CORE-COLLAPSE SUPERNOVAE
SO ASTROPHYSICAL JOURNAL
LA English
DT Article
DE early universe; galaxies: high-redshift; hydrodynamics; radiative
   transfer; shock waves; stars: early-type; supernovae: general
ID PAIR-INSTABILITY SUPERNOVAE; GAMMA-RAY BURSTS; METAL-POOR STARS;
   SUPERMASSIVE BLACK-HOLES; MASSIVE PRIMORDIAL STARS; HIGH-REDSHIFT
   UNIVERSE; POPULATION-III; HII REGION; PROTOSTELLAR FEEDBACK; RADIATIVE
   FEEDBACK
AB Understanding the properties of Population III (Pop III) stars is prerequisite to elucidating the nature of primeval galaxies, the chemical enrichment and reionization of the early intergalactic medium, and the origin of supermassive black holes. While the primordial initial mass function (IMF) remains unknown, recent evidence from numerical simulations and stellar archaeology suggests that some Pop III stars may have had lower masses than previously thought, 15-50 M-circle dot in addition to 50-500 M-circle dot. The detection of Pop III supernovae (SNe) by JWST, WFIRST, or the TMT could directly probe the primordial IMF for the first time. We present numerical simulations of 15-40 M-circle dot Pop III core-collapse SNe performed with the Los Alamos radiation hydrodynamics code RAGE. We find that they will be visible in the earliest galaxies out to z similar to 10-15, tracing their star formation rates and in some cases revealing their positions on the sky. Since the central engines of Pop III and solar-metallicity core-collapse SNe are quite similar, future detection of any Type II SNe by next-generation NIR instruments will in general be limited to this epoch.
C1 [Whalen, Daniel J.] Carnegie Mellon Univ, Dept Phys, Pittsburgh, PA 15213 USA.
   [Whalen, Daniel J.; Joggerst, Candace C.; Fryer, Chris L.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
   [Stiavelli, Massimo] Space Telescope Sci Inst, Baltimore, MD 21215 USA.
   [Heger, Alexander] Univ Minnesota, Sch Phys & Astron, Minneapolis, MN 55455 USA.
   [Holz, Daniel E.] Univ Chicago, Enrico Fermi Inst, Dept Phys, Chicago, IL 60637 USA.
   [Holz, Daniel E.] Univ Chicago, Kavli Inst Cosmol Phys, Chicago, IL 60637 USA.
RP Whalen, DJ (reprint author), Carnegie Mellon Univ, Dept Phys, Pittsburgh, PA 15213 USA.
FU Bruce and Astrid McWilliams Center for Cosmology at Carnegie Mellon
   University; US Department of Energy [DE-FC02-01ER41176, FC02-09ER41618,
   DE-FG02-87ER40328]; NASA JWST grant [NAG5-12458]; National Science
   Foundation CAREER grant [PHY-1151836]; National Nuclear Security
   Administration of the U.S. Department of Energy at Los Alamos National
   Laboratory [DE-AC52-06NA25396]
FX We thank the anonymous referee, whose comments improved the quality of
   this paper. D.J.W. is grateful for helpful discussions with Edo Berger,
   Ranga Ram Chary, Daniel Kasen, Avi Loeb, Pete Roming, and the many
   participants at First Stars and Galaxies: Challenges for the Next
   Decade, held at UT Austin 2010 March 8-11. He also acknowledges support
   from the Bruce and Astrid McWilliams Center for Cosmology at Carnegie
   Mellon University. A. H. was supported by the US Department of Energy
   under contracts DE-FC02-01ER41176, FC02-09ER41618 (SciDAC), and
   DE-FG02-87ER40328. M. S. thanks Marcia Rieke for making available the
   NIRCam filter curves and was partially supported by NASA JWST grant
   NAG5-12458. D. E. H. acknowledges support from the National Science
   Foundation CAREER grant PHY-1151836. Work at LANL was done under the
   auspices of the National Nuclear Security Administration of the U.S.
   Department of Energy at Los Alamos National Laboratory under contract
   No. DE-AC52-06NA25396. All CASTRO, RAGE, and SPECTRUM calculations were
   performed on Institutional Computing (IC) and Yellow network platforms
   at LANL(Conejo, Lobo, and Yellowrail).
NR 149
TC 22
Z9 22
U1 0
U2 12
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0004-637X
J9 ASTROPHYS J
JI Astrophys. J.
PD MAY 1
PY 2013
VL 768
IS 1
AR 95
DI 10.1088/0004-637X/768/1/95
PG 12
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 130ZT
UT WOS:000317960500095
ER

PT J
AU Sukumar, N
AF Sukumar, Narayanasami
TI Crystallographic studies on B12 binding proteins in eukaryotes and
   prokaryotes
SO BIOCHIMIE
LA English
DT Review
DE Cobalt; X-ray; Glycoprotein; Membrane protein; Transport proteins
ID DEPENDENT METHIONINE SYNTHASE; HUMAN INTRINSIC-FACTOR; X-RAY-STRUCTURE;
   ABC TRANSPORTER ARCHITECTURE; ESCHERICHIA-COLI; CRYSTAL-STRUCTURE;
   DIOL-DEHYDRATASE; STRUCTURAL BASIS; RIBONUCLEOTIDE REDUCTASES;
   VITAMIN-B-12 TRANSPORT
AB The X-ray crystal structures of several important vitamin B12 binding proteins that have been solved in recent years have enhanced our current understanding in the vitamin B12 field. These structurally diverse groups of B12 binding proteins perform various important biological activities, both by transporting B12 as well as catalyzing various biological reactions. An in-depth comparative analysis of these structures was carried out using PDB coordinates of a carefully chosen database of B12 binding proteins to correlate the overall folding of the molecule with phylogeny, the B12 interactions, and with their biological function. The structures of these proteins are discussed in the context of this comparative analysis. (C) 2013 Elsevier Masson SAS. All rights reserved.
C1 [Sukumar, Narayanasami] Cornell Univ, Argonne Natl Lab, NE CAT, Argonne, IL 60439 USA.
   [Sukumar, Narayanasami] Cornell Univ, Argonne Natl Lab, Dept Chem & Chem Biol, Argonne, IL 60439 USA.
RP Sukumar, N (reprint author), Cornell Univ, Argonne Natl Lab, NE CAT, Bldg 436E, Argonne, IL 60439 USA.
EM sukumar@anl.gov
FU National Institute of General Medical Sciences at the NIH [GM103403]
FX The work is supported by award GM103403 from the National Institute of
   General Medical Sciences at the NIH. I thank Professor Scott Mathews and
   Professor David Alpers of Washington University, St. Louis and Professor
   Steve Ealick of Cornell University, Ithaca for helpful discussions.
NR 70
TC 4
Z9 4
U1 1
U2 16
PU ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER
PI PARIS
PA 23 RUE LINOIS, 75724 PARIS, FRANCE
SN 0300-9084
J9 BIOCHIMIE
JI Biochimie
PD MAY
PY 2013
VL 95
IS 5
BP 976
EP 988
DI 10.1016/j.biochi.2013.01.014
PG 13
WC Biochemistry & Molecular Biology
SC Biochemistry & Molecular Biology
GA 130UF
UT WOS:000317944900003
PM 23395752
ER

PT J
AU Kurzrok, A
   Hund, G
AF Kurzrok, Andrew
   Hund, Gretchen
TI Beyond compliance: Integrating nonproliferation into corporate
   sustainability
SO BULLETIN OF THE ATOMIC SCIENTISTS
LA English
DT Article
DE corporate social responsibility; corporate sustainability; dual-use;
   export control; nonproliferation
AB Proliferators continue to seek dual-use commodities that can be exploited to create weapons of mass destruction, and the private sector has a critical role to play in guarding against this threat. Corporate sustainability, which helps firms and outside stakeholders monitor the impacts of business operations, has emerged as a framework for engagement with industry on its nonproliferation responsibilities. However, the existing literature has not considered how to integrate nonproliferation into the current infrastructure of corporate sustainability, particularly into voluntary reporting standards or socially responsible investment analysis. These tools are essential market mechanisms that incentivize superior behavior on other challenges such as environmentally responsible management, respect for human rights, and fair labor practices. The authors outline the history of corporate sustainability and argue that nonproliferation should be considered a sustainability issue. They propose a nonproliferation pledge and a series of nonproliferation indicators as potential first steps that could build awareness and distinguish between firms based on how successful they are at meeting nonproliferation goals.
C1 [Kurzrok, Andrew; Hund, Gretchen] Pacific NW Natl Lab, Seattle, WA USA.
RP Kurzrok, A (reprint author), Pacific NW Natl Lab, Seattle, WA USA.
NR 26
TC 2
Z9 2
U1 1
U2 14
PU SAGE PUBLICATIONS LTD
PI LONDON
PA 1 OLIVERS YARD, 55 CITY ROAD, LONDON EC1Y 1SP, ENGLAND
SN 0096-3402
EI 1938-3282
J9 B ATOM SCI
JI Bull. Atom. Scient.
PD MAY-JUN
PY 2013
VL 69
IS 3
BP 31
EP 42
DI 10.1177/0096340213485946
PG 12
WC International Relations; Social Issues
SC International Relations; Social Issues
GA 134XY
UT WOS:000318250300006
ER

PT J
AU Zeng, N
   King, AW
   Zaitchik, B
   Wullschleger, SD
   Gregg, J
   Wang, SQ
   Kirk-Davidoff, D
AF Zeng, Ning
   King, Anthony W.
   Zaitchik, Ben
   Wullschleger, Stan D.
   Gregg, Jay
   Wang, Shaoqiang
   Kirk-Davidoff, Dan
TI Carbon sequestration via wood harvest and storage: An assessment of its
   harvest potential
SO CLIMATIC CHANGE
LA English
DT Article
ID ATMOSPHERIC CARBON; CLIMATE-CHANGE; CROP RESIDUE; LAND-USE; PRODUCTS;
   MITIGATE; DIOXIDE
AB A carbon sequestration strategy has recently been proposed in which a forest is actively managed, and a fraction of the wood is selectively harvested and stored to prevent decomposition. The forest serves as a 'carbon scrubber' or 'carbon remover' that provides continuous sequestration (negative emissions). Earlier estimates of the theoretical potential of wood harvest and storage (WHS) based on coarse wood production rates were 10 +/- 5 GtC y(-1). Starting from this physical limit, here we apply a number of practical constraints: (1) land not available due to agriculture; (2) forest set aside as protected areas, assuming 50 % in the tropics and 20 % in temperate and boreal forests; (3) forests difficult to access due to steep terrain; (4) wood use for other purposes such as timber and paper. This 'top-down' approach yields a WHS potential 2.8 GtC y(-1). Alternatively, a 'bottom-up' approach, assuming more efficient wood use without increasing harvest, finds 0.1-0.5 GtC y(-1) available for carbon sequestration. We suggest a range of 1-3 GtC y(-1) carbon sequestration potential if major effort is made to expand managed forests and/or to increase harvest intensity. The implementation of such a scheme at our estimated lower value of 1 GtC y(-1) would imply a doubling of the current world wood harvest rate. This can be achieved by harvesting wood at a moderate harvesting intensity of 1.2 tC ha(-1) y(-1), over a forest area of 8 Mkm(2) (800 Mha). To achieve the higher value of 3 GtC y(-1), forests need to be managed this way on half of the world's forested land, or on a smaller area but with higher harvest intensity. We recommend WHS be considered part of the portfolio of climate mitigation and adaptation options that needs further research.
C1 [Zeng, Ning] Univ Maryland, Dept Atmospher & Ocean Sci, College Pk, MD 20742 USA.
   [Zeng, Ning] Univ Maryland, Earth Syst Sci Interdisciplinary Ctr, College Pk, MD 20742 USA.
   [King, Anthony W.; Wullschleger, Stan D.] Oak Ridge Natl Lab, Div Environm Sci, Oak Ridge, TN 37831 USA.
   [Zaitchik, Ben] Johns Hopkins Univ, Dept Earth & Planetary Sci, Baltimore, MD 21218 USA.
   [Gregg, Jay] Tech Univ Denmark, Riso Natl Lab Sustainable Energy, Roskilde, Denmark.
   [Wang, Shaoqiang] Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing, Peoples R China.
   [Kirk-Davidoff, Dan] MDA Informat Syst Inc, Climate Serv, Gaithersburg, MD USA.
   [Kirk-Davidoff, Dan] MDA Informat Syst Inc, Weather Serv, Gaithersburg, MD USA.
RP Zeng, N (reprint author), Univ Maryland, Dept Atmospher & Ocean Sci, College Pk, MD 20742 USA.
EM zeng@atmos.umd.edu
RI Gregg, Jay/C-6732-2011; Zeng, Ning/A-3130-2008; Wullschleger,
   Stan/B-8297-2012
OI Gregg, Jay/0000-0003-3946-3099; Zeng, Ning/0000-0002-7489-7629;
   Wullschleger, Stan/0000-0002-9869-0446
FU NSF [AGS-1129088]; NOAA [NA10OAR4310248]; U.S. Department of Energy
   (DOE), Office of Science, Biological and Environmental Research (BER)
   program; DOE [DE-AC05-00OR22725]
FX We are grateful for discussion and critiques from Gregg Marland,
   Lianhong Gu, Brian Cook, Peter Read, Ross Salawitch, Steve Smith, Cesar
   Izzaraulde, Dalia Abbas, Richard Birdsey, Linda Heath, Yude Pan, Ben
   Bond-Lamberty, Tris West, Brent Sohngen, Tony Janetos, Fritz Scholz,
   George Hurtt, Ruth DeFries, Thomas Schelling, Freeman Dyson, Paul
   Crutzen, Graham Stinson, Neil Sampson, Ruben Lubowski, Alexander Golub,
   Matt Pearson, Roger Sedjo, Steven Hamburg, and Ian Noble. This work
   resulted in part from a workshop entitled "Ecological carbon
   sequestration via wood burial and storage: A strategy for climate
   mitigation and adaptation", held at the Heinz Center, Washington DC
   during September 9-10, 2010. This work was supported by NSF grant
   AGS-1129088, and NOAA grant NA10OAR4310248. AWK and SDW acknowledge
   support from the U.S. Department of Energy (DOE), Office of Science,
   Biological and Environmental Research (BER) program. Oak Ridge National
   Laboratory is managed by UT-Battelle, LLC, for the DOE under contract
   DE-AC05-00OR22725.
NR 33
TC 4
Z9 4
U1 1
U2 34
PU SPRINGER
PI DORDRECHT
PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS
SN 0165-0009
J9 CLIMATIC CHANGE
JI Clim. Change
PD MAY
PY 2013
VL 118
IS 2
BP 245
EP 257
DI 10.1007/s10584-012-0624-0
PG 13
WC Environmental Sciences; Meteorology & Atmospheric Sciences
SC Environmental Sciences & Ecology; Meteorology & Atmospheric Sciences
GA 130OC
UT WOS:000317926800007
ER

PT J
AU McNeil, MA
   Letschert, VE
   du Can, SD
   Ke, J
AF McNeil, Michael A.
   Letschert, Virginie E.
   du Can, Stephane de la Rue
   Ke, Jing
TI Bottom-Up Energy Analysis System (BUENAS)-an international appliance
   efficiency policy tool
SO ENERGY EFFICIENCY
LA English
DT Article
DE Appliances; Energy demand forecast; Standards and labeling; Policy best
   practices; Appliance diffusion; Developing countries
ID STANDARDS
AB The Bottom-Up Energy Analysis System (BUENAS) calculates potential energy and greenhouse gas emission impacts of efficiency policies for lighting, heating, ventilation, and air conditioning, appliances, and industrial equipment through 2030. The model includes 16 end use categories and covers 11 individual countries plus the European Union. BUENAS is a bottom-up stock accounting model that predicts energy consumption for each type of equipment in each country according to engineering-based estimates of annual unit energy consumption, scaled by projections of equipment stock. Energy demand in each scenario is determined by equipment stock, usage, intensity, and efficiency. When available, BUENAS uses sales forecasts taken from country studies to project equipment stock. Otherwise, BUENAS uses an econometric model of household appliance uptake developed by the authors. Once the business as usual scenario is established, a high-efficiency policy scenario is constructed that includes an improvement in the efficiency of equipment installed in 2015 or later. Policy case efficiency targets represent current "best practice" and include standards already established in a major economy or well-defined levels known to enjoy a significant market share in a major economy. BUENAS calculates energy savings according to the difference in energy demand in the two scenarios. Greenhouse gas emission mitigation is then calculated using a forecast of electricity carbon factor. We find that mitigation of 1075 mt annual CO2 emissions is possible by 2030 from adopting current best practices of appliance efficiency policies. This represents a 17 % reduction in emissions in the business as usual case in that year.
C1 [McNeil, Michael A.; Letschert, Virginie E.; du Can, Stephane de la Rue; Ke, Jing] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
RP McNeil, MA (reprint author), Univ Calif Berkeley, Lawrence Berkeley Natl Lab, 1 Cyclotron Rd, Berkeley, CA 94720 USA.
EM MAMcNeil@lbl.gov; VLetschert@lbl.gov; SADelaRueduCan@lbl.gov;
   JKe@lbl.gov
FU LBNL; CLASP; International Copper Association; US Department of Energy
FX Development of the BUENAS model has taken place over several years and
   has benefitted from a great number of colleagues, including those at
   LBNL, in the international energy policy community, and among our
   sponsors. From LBNL, the authors would like to acknowledge Nicholas
   Bojda and Puneeth Kalavase, who contributed to recent updates and
   quality assurance. For their contributions to and review of the
   analysis, we thank Gregory Rosenquist, Won Young Park, Nakul Sathaye,
   Nihar Shah, Amol Phadke, Jayant Sathaye, and James McMahon from LBNL. In
   addition, we received invaluable insight from international colleagues,
   including Tanmay Tathagat, Jun Young Choi, Lloyd Harrington, Itha
   Sanchez, Margarito Sanchez, Anibal de Almeida, and Philippe Riviere.
   Special thanks go to Kevin Lane and Louis-Benoit Desroches for their
   careful review. We also acknowledge our sponsors and project managers,
   including Christine Egan, Yamina Saheb, Frank Klinckenberg and Allison
   Fan of CLASP, John Mollet of the International Copper Association, and
   Gabrielle Dreyfus of the US Department of Energy. Finally, we are
   particularly indebted to Stephen Wiel for planting the seed that grew
   into BUENAS.
NR 80
TC 10
Z9 10
U1 2
U2 13
PU SPRINGER
PI DORDRECHT
PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS
SN 1570-646X
J9 ENERG EFFIC
JI Energy Effic.
PD MAY
PY 2013
VL 6
IS 2
BP 191
EP 217
DI 10.1007/s12053-012-9182-6
PG 27
WC GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY; Energy & Fuels; Environmental
   Studies
SC Science & Technology - Other Topics; Energy & Fuels; Environmental
   Sciences & Ecology
GA 127GS
UT WOS:000317686600001
ER

PT J
AU Vine, E
   Saxonis, W
   Peters, J
   Tannenbaum, B
   Wirtshafter, B
AF Vine, Edward
   Saxonis, William
   Peters, Jane
   Tannenbaum, Bobbi
   Wirtshafter, Bob
TI Training the next generation of energy efficiency evaluators
SO ENERGY EFFICIENCY
LA English
DT Article
DE Training; Evaluation; Evaluator; IEPEC; Energy efficiency; Survey
AB The energy efficiency services sector is an increasingly important part of the global economy, with an increased need for trained evaluators to foster energy efficiency program accountability and improvement. Organizations are experiencing difficulty in finding people who are knowledgeable about and experienced in the evaluation of energy efficiency programs. Accordingly, there is a need to assess the training needs of the energy efficiency evaluation community (for both new and "experienced" evaluators). This paper presents the results of a recent survey conducted by the International Energy Program Evaluation Conference (IEPEC) on energy efficiency evaluation training needs and contrasts those findings with the findings from a survey conducted by the American Evaluation Association on young evaluators (those people in the field < 5 years) and another by the Association of Energy Services Professionals. This analysis is also complemented by a brief survey of members of the 2012 Rome Conference IEPEC Planning Committee on international needs.
C1 [Vine, Edward] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
   [Vine, Edward] Calif Inst Energy & Environm, Berkeley, CA USA.
   [Saxonis, William] New York Dept Publ Serv, Albany, NY USA.
   [Peters, Jane] Res Act, Portland, OR USA.
   [Tannenbaum, Bobbi] Res Act, Madison, WI USA.
   [Wirtshafter, Bob] Wirstshafter Associates, Rydal, PA USA.
RP Vine, E (reprint author), Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
EM elvine@lbl.gov
NR 16
TC 1
Z9 1
U1 2
U2 8
PU SPRINGER
PI DORDRECHT
PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS
SN 1570-646X
J9 ENERG EFFIC
JI Energy Effic.
PD MAY
PY 2013
VL 6
IS 2
BP 293
EP 303
DI 10.1007/s12053-012-9177-3
PG 11
WC GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY; Energy & Fuels; Environmental
   Studies
SC Science & Technology - Other Topics; Energy & Fuels; Environmental
   Sciences & Ecology
GA 127GS
UT WOS:000317686600006
ER

PT J
AU Vine, E
   Hall, N
   Keating, KM
   Kushler, M
   Prahl, R
AF Vine, Edward
   Hall, Nick
   Keating, Kenneth M.
   Kushler, Martin
   Prahl, Ralph
TI Emerging evaluation issues: persistence, behavior, rebound, and policy
SO ENERGY EFFICIENCY
LA English
DT Article
DE Persistence; Behavior and behavior change; Rebound effect
ID PROGRAMS
AB In this paper, we focus on a select group of technical and policy issues, which are currently important and/or are expected to become more critical in the coming years. The first set of technical issues deals with the evaluation of (1) persistence, (2) behavior and behavior change, and (3) rebound. We provide an overview of the importance of these issues, discuss key data collection and analytical challenges involved in evaluating them, and identify some recent methodological advances that have been made in these areas. These technical issues are becoming more important as energy efficiency and demand side management are increasingly being relied upon as a means of achieving long-term energy resource and environmental objectives. The second set of policy issues deals with (1) the evaluation of energy efficiency at the "policy" rather than the "program" level, (2) the use of "top-down" rather than "bottom-up" evaluation of energy efficiency programs and policies, and (3) closing the loop between evaluators and implementers. We provide an overview of the importance of these issues, particularly as seen by policymakers at the state, federal, and international levels.
C1 [Vine, Edward] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
   [Vine, Edward] Calif Inst Energy & Environm, Berkeley, CA USA.
   [Hall, Nick] TecMarket Works, Oregon, WI USA.
   [Kushler, Martin] Amer Council Energy Efficient Econ, Williamston, MI 48895 USA.
   [Prahl, Ralph] Prahl & Associates, Pembroke Pines, FL USA.
RP Vine, E (reprint author), Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Bldg 90-4000, Berkeley, CA 94720 USA.
EM elvine@lbl.gov
NR 28
TC 5
Z9 5
U1 0
U2 4
PU SPRINGER
PI DORDRECHT
PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS
SN 1570-646X
J9 ENERG EFFIC
JI Energy Effic.
PD MAY
PY 2013
VL 6
IS 2
BP 329
EP 339
DI 10.1007/s12053-012-9174-6
PG 11
WC GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY; Energy & Fuels; Environmental
   Studies
SC Science & Technology - Other Topics; Energy & Fuels; Environmental
   Sciences & Ecology
GA 127GS
UT WOS:000317686600009
ER

PT J
AU Takeuchi, ES
   Marschilok, AC
   Takeuchi, KJ
   Ignatov, A
   Zhong, Z
   Croft, M
AF Takeuchi, Esther S.
   Marschilok, Amy C.
   Takeuchi, Kenneth J.
   Ignatov, Alexander
   Zhong, Zhong
   Croft, Mark
TI Energy dispersive X-ray diffraction of lithium-silver vanadium
   phosphorous oxide cells: in situ cathode depth profiling of an
   electrochemical reduction-displacement reaction
SO ENERGY & ENVIRONMENTAL SCIENCE
LA English
DT Article
ID ABSORPTION SPECTROSCOPY; DISCHARGE; BATTERIES; LIFEPO4; DEVICES; STATE
AB Li/Ag2VO2PO4 cells exhibit high power output and a 15 000 fold decrease in impedance upon initial discharge. Energy dispersive X-ray diffraction (EDXRD) allows dimensional resolution of the reaction progress in situ, revealing that silver metal (Ag-0) initially forms at the electrode-electrolyte interface. This report contains the first description of an in situ EDXRD analysis of a cathode located within an intact Li-anode cell.
C1 [Takeuchi, Esther S.; Marschilok, Amy C.; Takeuchi, Kenneth J.] SUNY Stony Brook, Dept Chem, Stony Brook, NY 11794 USA.
   [Takeuchi, Esther S.; Marschilok, Amy C.] SUNY Stony Brook, Dept Mat Sci & Engn, Stony Brook, NY 11794 USA.
   [Takeuchi, Esther S.] Brookhaven Natl Lab, Global & Reg Solut, Upton, NY 11973 USA.
   [Ignatov, Alexander; Croft, Mark] Rutgers State Univ, Dept Phys & Astron, Piscataway, NJ 08854 USA.
   [Zhong, Zhong; Croft, Mark] Brookhaven Natl Lab, Natl Synchrotron Light Source, Upton, NY 11973 USA.
RP Takeuchi, ES (reprint author), SUNY Stony Brook, Dept Chem, Stony Brook, NY 11794 USA.
EM esther.takeuchi@stonybrook.edu; amy.marschilok@stonybrook.edu;
   kenneth.takeuchi.1@stonybrook.edu; croft@physics.rutgers.edu
RI Takeuchi, Esther/D-1825-2014; Marschilok, Amy/D-1821-2014
FU Department of Energy, Office of Basic Energy Sciences [DE-SC0008512]; US
   Department of Energy [DE-AC02-76CH00016]
FX E. Takeuchi, A. Marschilok, and K. Takeuchi acknowledge support by the
   Department of Energy, Office of Basic Energy Sciences, under Grant
   DE-SC0008512. Utilization of the National Synchrotron Light Source
   (NSLS) was supported by US Department of Energy contract
   DE-AC02-76CH00016. The authors acknowledge Kevin Tanzil for assembly of
   the test cells.
NR 27
TC 26
Z9 26
U1 5
U2 73
PU ROYAL SOC CHEMISTRY
PI CAMBRIDGE
PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS,
   ENGLAND
SN 1754-5692
EI 1754-5706
J9 ENERG ENVIRON SCI
JI Energy Environ. Sci.
PD MAY
PY 2013
VL 6
IS 5
BP 1465
EP 1470
DI 10.1039/c3ee40152a
PG 6
WC Chemistry, Multidisciplinary; Energy & Fuels; Engineering, Chemical;
   Environmental Sciences
SC Chemistry; Energy & Fuels; Engineering; Environmental Sciences & Ecology
GA 131HX
UT WOS:000317984700006
ER

PT J
AU Nikiforov, MP
   Lai, B
   Chen, W
   Chen, S
   Schaller, RD
   Strzalka, J
   Maser, J
   Darling, SB
AF Nikiforov, Maxim P.
   Lai, Barry
   Chen, Wei
   Chen, Si
   Schaller, Richard D.
   Strzalka, Joseph
   Maser, Joerg
   Darling, Seth B.
TI Detection and role of trace impurities in high-performance organic solar
   cells
SO ENERGY & ENVIRONMENTAL SCIENCE
LA English
DT Article
ID PALLADIUM NANOPARTICLES; POLYMER; REMOVAL; TRAPS
AB Trace impurities in organic solar cells, such as those from residual catalyst material in conjugated polymers, are often ignored but are known to deleteriously affect device performance. Batch-to-batch variations in the nature and quantity of such impurities leads to widespread issues with irreproducible optoelectronic function, yet to date no technique has emerged that is reliably capable of identifying the character of impurities or their concentration in organic photovoltaic active layer blends. Here we focus on state-of-the-art, high-performance bulk heterojunction blends and show that synchrotron-based X-ray fluorescence can detect and quantify trace concentrations of metal impurities in these systems. Adopting a strategy of artificially introducing known quantities of additional catalyst into polymer/fullerene blends, we identify both the threshold concentration at which performance degrades and the mechanism for the degradation. With the knowledge of a target impurity concentration and a technique in hand to accurately measure their presence, researchers can implement materials preparation processes to achieve consistent, high performance in organic solar cells.
C1 [Nikiforov, Maxim P.; Schaller, Richard D.; Darling, Seth B.] Argonne Natl Lab, Ctr Nanoscale Mat, Argonne, IL 60439 USA.
   [Lai, Barry; Chen, Si; Strzalka, Joseph; Maser, Joerg] Argonne Natl Lab, Xray Sci Div, Argonne, IL 60439 USA.
   [Chen, Wei] Argonne Natl Lab, Mat Sci Div, Argonne, IL 60439 USA.
   [Chen, Wei; Darling, Seth B.] Univ Chicago, Inst Mol Engn, Chicago, IL 60637 USA.
   [Schaller, Richard D.] Northwestern Univ, Dept Chem, Evanston, IL USA.
RP Nikiforov, MP (reprint author), IIGST, San Jose, CA USA.
EM darling@anl.gov
RI Chen, Wei/G-6055-2011; Maser, Jorg/K-6817-2013
OI Chen, Wei/0000-0001-8906-4278; 
FU Center for Nanoscale Materials, a U.S. Department of Energy, Office of
   Science, Office of Basic Energy Sciences User Facility
   [DE-AC02-06CH11357]; U.S. Department of Energy, Office of Science,
   Office of Basic Energy Sciences [DE-AC02-06CH11357]
FX This work was performed, in part, at the Center for Nanoscale Materials,
   a U.S. Department of Energy, Office of Science, Office of Basic Energy
   Sciences User Facility under Contract no. DE-AC02-06CH11357. Use of the
   Advanced Photon Source (APS) at Argonne National Laboratory was
   supported by the U.S. Department of Energy, Office of Science, Office of
   Basic Energy Sciences, under Contract no. DE-AC02-06CH11357. MPN is
   grateful to the Director's Fellowship Program for financial support.
NR 38
TC 72
Z9 72
U1 3
U2 78
PU ROYAL SOC CHEMISTRY
PI CAMBRIDGE
PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS,
   ENGLAND
SN 1754-5692
J9 ENERG ENVIRON SCI
JI Energy Environ. Sci.
PD MAY
PY 2013
VL 6
IS 5
BP 1513
EP 1520
DI 10.1039/c3ee40556g
PG 8
WC Chemistry, Multidisciplinary; Energy & Fuels; Engineering, Chemical;
   Environmental Sciences
SC Chemistry; Energy & Fuels; Engineering; Environmental Sciences & Ecology
GA 131HX
UT WOS:000317984700015
ER

PT J
AU Stoerzinger, KA
   Risch, M
   Suntivich, J
   Lu, WM
   Zhou, J
   Biegalski, MD
   Christen, HM
   Ariando
   Venkatesan, T
   Shao-Horn, Y
AF Stoerzinger, Kelsey A.
   Risch, Marcel
   Suntivich, Jin
   Lue, W. M.
   Zhou, Jigang
   Biegalski, Michael D.
   Christen, Hans M.
   Ariando
   Venkatesan, T.
   Shao-Horn, Yang
TI Oxygen electrocatalysis on (001)-oriented manganese perovskite films: Mn
   valency and charge transfer at the nanoscale
SO ENERGY & ENVIRONMENTAL SCIENCE
LA English
DT Article
ID REDUCTION REACTION; ELECTRONIC-STRUCTURE; CATALYTIC ACTIVITY;
   ALKALINE-SOLUTIONS; TRANSITION-METALS; OXIDE CATALYSTS;
   HETEROSTRUCTURES; INTERFACES; NANOWIRES; BATTERIES
AB We report that the oxygen reduction reaction (ORR) activities of (001)-oriented manganese perovskite films decrease from 10 to 1 nm by more than an order of magnitude, which can be attributed to the barrier associated with interfacial band bending that impedes electron transfer to the electrolyte, and reduction of Mn3+ due to charge transfer from the Nb:SrTiO3 substrate. Furthermore, we show by substitution in La1-x(Ca,Sr)(x)MnO3 that Mn3+, not Mn4+, is the active valence state for ORR.
C1 [Stoerzinger, Kelsey A.; Shao-Horn, Yang] MIT, Dept Mat Sci & Engn, Cambridge, MA 02139 USA.
   [Stoerzinger, Kelsey A.; Risch, Marcel; Shao-Horn, Yang] MIT, Electrochem Energy Lab, Cambridge, MA 02139 USA.
   [Suntivich, Jin] Harvard Univ, Ctr Environm, Cambridge, MA 02138 USA.
   [Lue, W. M.; Venkatesan, T.] Natl Univ Singapore, Dept Elect & Comp Engn, Singapore 117583, Singapore.
   [Lue, W. M.; Ariando; Venkatesan, T.] Natl Univ Singapore, NUSNNI NanoCore, Singapore 117411, Singapore.
   [Zhou, Jigang] Canadian Light Source, Saskatoon, SK S7N 2V3, Canada.
   [Biegalski, Michael D.; Christen, Hans M.] Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Oak Ridge, TN 37831 USA.
   [Ariando; Venkatesan, T.] Natl Univ Singapore, Dept Phys, Singapore 117542, Singapore.
   [Shao-Horn, Yang] MIT, Dept Mech Engn, Cambridge, MA 02139 USA.
RP Stoerzinger, KA (reprint author), MIT, Dept Mat Sci & Engn, 77 Massachusetts Ave, Cambridge, MA 02139 USA.
EM shaohorn@mit.edu
RI Christen, Hans/H-6551-2013; Ariando, Ariando/F-8953-2012; Venkatesan,
   Thirumalai/E-1667-2013; Risch, Marcel/C-3583-2016; Zhou,
   Jigang/N-6831-2014
OI Stoerzinger, Kelsey/0000-0002-3431-8290; Christen,
   Hans/0000-0001-8187-7469; Ariando, Ariando/0000-0002-0598-426X; Risch,
   Marcel/0000-0003-2820-7006; Zhou, Jigang/0000-0001-6644-2862
FU MRSEC Program of the National Science Foundation [DMR-0819762]; Eni
   S.p.A under the Eni-MIT Alliance Solar Frontiers; DOE Hydrogen
   Initiative program [DE-FG02-05ER15728]; NSERC; NRC; CIHR; University of
   Saskatchewan; Office of Science, Office of Basic Energy Sciences, of the
   US Department of Energy [DE-AC02-05CH11231]; NRF-CRP
   [NRF2008NRF-CRP002-024]; Oak Ridge National Laboratory by the Scientific
   User Facilities Division, Office of Basic Energy Sciences, US Department
   of Energy; National Science Foundation Graduate Research Fellowship
   [DGE-1122374]
FX This work was supported in part by the MRSEC Program of the National
   Science Foundation under award number DMR-0819762, by Eni S.p.A under
   the Eni-MIT Alliance Solar Frontiers, and by the DOE Hydrogen Initiative
   program under award number DE-FG02-05ER15728. The Canadian Light Source
   (CLS) is supported by NSERC, NRC, CIHR and the University of
   Saskatchewan. The Advanced Light Source (ALS) is supported by the
   Director, Office of Science, Office of Basic Energy Sciences, of the US
   Department of Energy under contract no. DE-AC02-05CH11231. We thank
   beamline scientist Dr. Wanli Yang for guidance in measurements at the
   ALS. The work at NUSNNI-NanoCore is supported by NRF-CRP grant
   "Tailoring Oxide Electronics by Atomic Control" NRF2008NRF-CRP002-024.
   The PLD performed at the Center for Nanophase Materials Sciences is
   sponsored at Oak Ridge National Laboratory by the Scientific User
   Facilities Division, Office of Basic Energy Sciences, US Department of
   Energy. K. A. S. was supported by the National Science Foundation
   Graduate Research Fellowship under Grant no. DGE-1122374.
NR 41
TC 52
Z9 53
U1 14
U2 152
PU ROYAL SOC CHEMISTRY
PI CAMBRIDGE
PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS,
   ENGLAND
SN 1754-5692
J9 ENERG ENVIRON SCI
JI Energy Environ. Sci.
PD MAY
PY 2013
VL 6
IS 5
BP 1582
EP 1588
DI 10.1039/c3ee40321a
PG 7
WC Chemistry, Multidisciplinary; Energy & Fuels; Engineering, Chemical;
   Environmental Sciences
SC Chemistry; Energy & Fuels; Engineering; Environmental Sciences & Ecology
GA 131HX
UT WOS:000317984700024
ER

PT J
AU Rubin, J
   Leiby, PN
AF Rubin, Jonathan
   Leiby, Paul N.
TI Tradable credits system design and cost savings for a national low
   carbon fuel standard for road transport
SO ENERGY POLICY
LA English
DT Article
DE Credit trading; Transportation; Greenhouse gas emissions
ID BIOFUELS; ENERGY
AB This research examines the economic implications of different designs for a national low carbon fuel standard (NLCFS) for the road transportation sector. A NLCFS based on the average Carbon Intensity (Cl) of all fuels sold generates an incentive for fuel suppliers to reduce the measured Cl of their fuels. The economic impacts are determined by the availability of low carbon fuels, estimates of which can vary widely. Also important are the compliance path, reference level Cl, and the design of the credit system, particularly the opportunities for trading and banking. To quantitatively examine the implications of a NLCFS, we created the Transportation Regulation and Credit Trading (TRACT) Model. With TRACT, we model a NLCFS credit trading system among profit maximizing fuel suppliers for light- and heavy-duty vehicle fuel use for the United States from 2012 to 2030. We find that credit trading across gasoline and diesel fuel markets can lower the average costs of carbon reductions by an insignificant amount to 98% depending on forecasts of biofuel supplies and carbon intensities. Adding banking of credits on top of trading can further lower the average cost of carbon reductions by 5%-9% and greatly reduce year-to-year fluctuations in credit prices. (C) 2012 Elsevier Ltd. All rights reserved.
C1 [Rubin, Jonathan] Univ Maine, Margaret Chase Smith Policy Ctr, Orono, ME 04469 USA.
   [Leiby, Paul N.] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
RP Rubin, J (reprint author), Univ Maine, Margaret Chase Smith Policy Ctr, 5784 York Complex,4 Orono, Orono, ME 04469 USA.
EM jonathan.rubin@umit.maine.edu; leibypn@ornl.gov
FU Energy Foundation
FX We thank Maxwell L. Brown and Catherine Dickerson for their research
   assistance and support. We also thank 3 anonymous referees for their
   helpful comments. The study has received financial support from the
   Energy Foundation. The views and opinions expressed in this paper are
   those of the authors alone and do not necessarily represent those of any
   sponsoring organization.
NR 26
TC 4
Z9 4
U1 0
U2 18
PU ELSEVIER SCI LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
SN 0301-4215
J9 ENERG POLICY
JI Energy Policy
PD MAY
PY 2013
VL 56
BP 16
EP 28
DI 10.1016/j.enpol.2012.05.031
PG 13
WC Energy & Fuels; Environmental Sciences; Environmental Studies
SC Energy & Fuels; Environmental Sciences & Ecology
GA 120GI
UT WOS:000317158400003
ER

PT J
AU Leiby, PN
   Rubin, J
AF Leiby, Paul N.
   Rubin, Jonathan
TI Energy security implications of a national low carbon fuel standard
SO ENERGY POLICY
LA English
DT Article
DE Energy security; transportation; low carbon fuel
ID OIL SANDS INDUSTRY
AB This paper discusses the potential energy security implications of a national low carbon fuel standard (NLCFS). A low carbon fuel standard is designed to reduce greenhouse gas (GHG) emissions by targeting the fuel portion of the fuel-vehicle system. Specifically, a NLCFS would set national targets for the average carbon intensity (Cl) of motor fuels, and establish a market for credits that allows fuel producers and importers to respond in a variety of ways to the signal provided by the credit price. An important method for lowering the Cl of transportation is to substitute lower-carbon alternative fuels such as advanced biofuels, electricity, CNG, and H2. Despite the focus on GHGs, so long as transportation fuels remain dominated by petroleum, transportation fuel policies like a NLCFS also will be evaluated in terms of their energy security impacts. We examine the fuel substitutions that are projected to be induced by a NLCFS and consider the energy security implications of displacing higher carbon fuels, such as imported Canadian Oil Sands oil or certain imported crude oils, with lower-carbon domestic oil, biofuels, or lower carbon oil imported from other sources. (C) 2012 Elsevier Ltd. All rights reserved.
C1 [Leiby, Paul N.] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
   [Rubin, Jonathan] Univ Maine, Orono, ME 04469 USA.
RP Leiby, PN (reprint author), Oak Ridge Natl Lab, POB 2008,MS 6036, Oak Ridge, TN 37831 USA.
EM leibypn@ornl.gov; jonathan.rubin@umit.maine.edu
FU Energy Foundation
FX We thank David C. Bowman and Maxwell L Brown for their research
   assistance and support. The study was partially supported by the Energy
   Foundation. The views and opinions expressed in this paper are those of
   the authors alone and do not necessarily represent those of any
   sponsoring organization.
NR 43
TC 6
Z9 6
U1 0
U2 28
PU ELSEVIER SCI LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
SN 0301-4215
J9 ENERG POLICY
JI Energy Policy
PD MAY
PY 2013
VL 56
BP 29
EP 40
DI 10.1016/j.enpol.2012.06.058
PG 12
WC Energy & Fuels; Environmental Sciences; Environmental Studies
SC Energy & Fuels; Environmental Sciences & Ecology
GA 120GI
UT WOS:000317158400004
ER

PT J
AU Tonn, B
   Hawkins, B
   Schweitzer, M
   Eisenberg, J
AF Tonn, Bruce
   Hawkins, Beth
   Schweitzer, Martin
   Eisenberg, Joel
TI Process evaluation of the home performance with ENERGY STAR Program
SO ENERGY POLICY
LA English
DT Article
DE Home retrofit; ENERGY STAR; Program evaluation
AB The Home Performance with ENERGY STAR Program (HPwES) was established to promote a comprehensive, whole-house approach to retrofits. It is currently administered by the U.S. Department of Energy (DOE) after being jointly administered by DOE and the U.S. Environmental Protection Agency (EPA) since the Program's inception in 1999. This paper presents the results of a process evaluation of the HPwES Program. Interviews were conducted with key federal Program administrators and a sample of sponsors and contractors responsible for implementing the Program in the field. The respondents describe a program whose success is largely dependent on the use of the ENERGY STAR brand and the flexibility given sponsors to tailor their programs to their specific contexts. It is recommended that the HPwES Program: evolve to better meet the needs of specific types of sponsors (e.g., utilities, public benefit funds); implement a national marketing campaign; create closer ties to other DOE programs (e.g., the Weatherization Assistance Program); and conduct research to better establish program energy savings impacts and awareness. (C) 2013 Elsevier Ltd. All rights reserved.
C1 [Tonn, Bruce; Hawkins, Beth; Schweitzer, Martin; Eisenberg, Joel] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
RP Hawkins, B (reprint author), Oak Ridge Natl Lab, 1 Bethel Valley Rd, Oak Ridge, TN 37831 USA.
EM hawkinsba@ornl.gov
NR 7
TC 4
Z9 5
U1 2
U2 15
PU ELSEVIER SCI LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
SN 0301-4215
J9 ENERG POLICY
JI Energy Policy
PD MAY
PY 2013
VL 56
BP 371
EP 381
DI 10.1016/j.enpol.2012.12.076
PG 11
WC Energy & Fuels; Environmental Sciences; Environmental Studies
SC Energy & Fuels; Environmental Sciences & Ecology
GA 120GI
UT WOS:000317158400034
ER

PT J
AU Kim, Y
   Cunningham, MA
   Mire, J
   Tesar, C
   Sacchettini, J
   Joachimiak, A
AF Kim, Youngchang
   Cunningham, Mark A.
   Mire, Joseph
   Tesar, Christine
   Sacchettini, James
   Joachimiak, Andrzej
TI NDM-1, the ultimate promiscuous enzyme: substrate recognition and
   catalytic mechanism
SO FASEB JOURNAL
LA English
DT Article
DE metallo-beta-lactamase; antibiotic resistance; pH dependence
ID METALLO-BETA-LACTAMASE; ANTIBIOTIC-RESISTANCE; MOLECULAR-DYNAMICS;
   CRYSTAL-STRUCTURE; ESCHERICHIA-COLI; MODEL; ZINC; SIMULATIONS;
   DIFFRACTION; INHIBITION
AB The specter of a return to an era in which infectious disease looms as a significant threat to human health is not just hyperbole; there are serious concerns about the widespread overuse and misuse of antibiotics contributing to increased antibiotic resistance in pathogens. The recent discovery of a new enzyme, first identified in Klebsiella pneumoniae from a patient from New Delhi and denoted as NDM-1, represents an example of extreme promiscuity: It hydrolyzes and inactivates nearly all known beta-lactam-based antibiotics with startling efficiency. NDM-1 can utilize different metal cofactors and seems to exploit an alternative mechanism based on the reaction conditions. Here we report the results of a combined experimental and theoretical study that examines the substrate, metal binding, and catalytic mechanism of the enzyme. We utilize structures obtained through X-ray crystallography, biochemical assays, and numerical simulation to construct a model of the enzyme catalytic pathway. The NDM-1 enzyme interacts with the substrate solely through zinc, or other metals, bound in the active site, explaining the observed lack of specificity against a broad range of beta-lactam antibiotic agents. The zinc ions also serve to activate a water molecule that hydrolyzes the beta-lactam ring through a proton shuttle.-Kim, Y., Cunningham, M. A.; Mire, J., Tesar, C., Sacchettini, J., Joachimiak, A. NDM-1, the ultimate promiscuous enzyme: substrate recognition and catalytic mechanism. FASEB J. 27, 1917-1927 (2013). www.fasebj.org
C1 [Kim, Youngchang; Tesar, Christine; Joachimiak, Andrzej] Argonne Natl Lab, Midwest Ctr Struct Genom, Argonne, IL 60439 USA.
   [Kim, Youngchang; Tesar, Christine; Joachimiak, Andrzej] Argonne Natl Lab, Struct Biol Ctr, Biosci Div, Argonne, IL 60439 USA.
   [Cunningham, Mark A.] Univ Texas Pan Amer, Dept Phys & Geol, Edinburg, TX 78539 USA.
   [Mire, Joseph; Sacchettini, James] Texas A&M Univ, Dept Biochem & Biophys, College Stn, TX 77843 USA.
RP Joachimiak, A (reprint author), Argonne Natl Lab, Midwest Ctr Struct Genom, 9700 S Cass Ave, Argonne, IL 60439 USA.
EM cunningham@utpa.edu; andrzejj@anl.gov
FU U.S. National Institutes of Health [GM094585, GM094568]; U.S. Department
   of Energy, Office of Biological and Environmental Research
   [DE-AC02-06CH11357]; National Science Foundation's FaST program
   [HRD-0703584]
FX The authors thank the members of the Midwest Center for Structural
   Genomics and the Structural Biology Center at Argonne National
   Laboratory for their support, specifically Robert Jedrzejczak for
   cloning the truncated NDM-1 gene. This research has been funded in part
   by a grant from the U.S. National Institutes of Health GM094585 (A.J.),
   GM094568 (J.S.), and by the U.S. Department of Energy, Office of
   Biological and Environmental Research, under contract DE-AC02-06CH11357.
   M.A.C. has also received support through the National Science
   Foundation's FaST program (HRD-0703584), administered by the Department
   of Educational Programs at Argonne National Laboratory. The authors
   acknowledge the Texas Advanced Computing Center (TACC;
   http://www.tacc.utexas.edu) at the University of Texas at Austin for
   providing HPC resources that have contributed to the research results
   reported within this article. Additional computational resources were
   provided by the HiPAC cluster at the University of Texas-Pan American.
   The authors thank Gekleng Chhor for proofreading of the manuscript. The
   atomic coordinates and structure factors have been deposited to the
   Protein Data Bank (PDB IDs: 4H0D, 4HL2, 4HL1, 4HKY; http://www.pdb.org).
NR 44
TC 29
Z9 31
U1 0
U2 44
PU FEDERATION AMER SOC EXP BIOL
PI BETHESDA
PA 9650 ROCKVILLE PIKE, BETHESDA, MD 20814-3998 USA
SN 0892-6638
J9 FASEB J
JI Faseb J.
PD MAY
PY 2013
VL 27
IS 5
BP 1917
EP 1927
DI 10.1096/fj.12-224014
PG 11
WC Biochemistry & Molecular Biology; Biology; Cell Biology
SC Biochemistry & Molecular Biology; Life Sciences & Biomedicine - Other
   Topics; Cell Biology
GA 134PU
UT WOS:000318226100012
PM 23363572
ER

PT J
AU Fitzsimons, MS
   Novotny, M
   Lo, CC
   Dichosa, AEK
   Yee-Greenbaum, JL
   Snook, JP
   Gu, W
   Chertkov, O
   Davenport, KW
   McMurry, K
   Reitenga, KG
   Daughton, AR
   He, J
   Johnson, SL
   Gleasner, CD
   Wills, PL
   Parson-Quintana, B
   Chain, PS
   Detter, JC
   Lasken, RS
   Han, CS
AF Fitzsimons, Michael S.
   Novotny, Mark
   Lo, Chien-Chi
   Dichosa, Armand E. K.
   Yee-Greenbaum, Joyclyn L.
   Snook, Jeremy P.
   Gu, Wei
   Chertkov, Olga
   Davenport, Karen W.
   McMurry, Kim
   Reitenga, Krista G.
   Daughton, Ashlynn R.
   He, Jian
   Johnson, Shannon L.
   Gleasner, Cheryl D.
   Wills, Patti L.
   Parson-Quintana, Beverly
   Chain, Patrick S.
   Detter, John C.
   Lasken, Roger S.
   Han, Cliff S.
TI Nearly finished genomes produced using gel microdroplet culturing reveal
   substantial intraspecies genomic diversity within the human microbiome
SO GENOME RESEARCH
LA English
DT Article
ID MULTIPLE DISPLACEMENT AMPLIFICATION; STREPTOCOCCUS-ORALIS; READ
   ALIGNMENT; SINGLE CELLS; DNA; POLYMERASE; RNA; ALGORITHM; GENES; CORE
AB The majority of microbial genomic diversity remains unexplored. This is largely due to our inability to culture most microorganisms in isolation, which is a prerequisite for traditional genome sequencing. Single-cell sequencing has allowed researchers to circumvent this limitation. DNA is amplified directly from a single cell using the whole-genome amplification technique of multiple displacement amplification (MDA). However, MDA from a single chromosome copy suffers from amplification bias and a large loss of specificity from even very small amounts of DNA contamination, which makes assembling a genome difficult and completely finishing a genome impossible except in extraordinary circumstances. Gel microdrop cultivation allows culturing of a diverse microbial community and provides hundreds to thousands of genetically identical cells as input for an MDA reaction. We demonstrate the utility of this approach by comparing sequencing results of gel microdroplets and single cells following MDA. Bias is reduced in the MDA reaction and genome sequencing, and assembly is greatly improved when using gel microdroplets. We acquired multiple near-complete genomes for two bacterial species from human oral and stool microbiome samples. A significant amount of genome diversity, including single nucleotide polymorphisms and genome recombination, is discovered. Gel microdroplets offer a powerful and high-throughput technology for assembling whole genomes from complex samples and for probing the pan-genome of naturally occurring populations.
C1 [Fitzsimons, Michael S.; Lo, Chien-Chi; Dichosa, Armand E. K.; Snook, Jeremy P.; Gu, Wei; Chertkov, Olga; Davenport, Karen W.; McMurry, Kim; Reitenga, Krista G.; Daughton, Ashlynn R.; He, Jian; Johnson, Shannon L.; Gleasner, Cheryl D.; Wills, Patti L.; Parson-Quintana, Beverly; Chain, Patrick S.; Detter, John C.; Han, Cliff S.] Los Alamos Natl Lab, Biosci Div, Los Alamos, NM 87545 USA.
   [Novotny, Mark; Yee-Greenbaum, Joyclyn L.; Lasken, Roger S.] J Craig Venter Inst, San Diego, CA 92121 USA.
   [He, Jian] Jilin Univ, Norman Bethune Coll Med, Minist Educ, Key Lab Pathobiol, Changchun 130021, Peoples R China.
RP Han, CS (reprint author), Los Alamos Natl Lab, Biosci Div, POB 1663, Los Alamos, NM 87545 USA.
EM Han_cliff@lanl.gov
OI Johnson, Shannon/0000-0002-3972-9208; Chain,
   Patrick/0000-0003-3949-3634; Dichosa, Armand/0000-0003-0640-6629
FU Department of Energy Los Alamos National Laboratory LDRD program;
   National Institute of Allergy and Infectious Diseases, National
   Institutes of Health; Department of Health and Human Services
   [HHSN272200900007C]; HMP Project [U54 AI-084844-01]; National Human
   Research Institute [NIH-2 R01 HG003647]; Alfred P. Sloan Foundation
FX We acknowledge Dr. Jacques Izard (Forsyth Institute) and Dr. Martin
   Blaser (New York University) for providing the anonymized oral and fecal
   samples, respectively. We also thank George Weinstock for providing us
   with the Entero coccus faecium TX16 genome sequence. We thank the
   anonymous reviewers who provided suggestions that made the manuscript
   much stronger. Funding was provided by the Department of Energy Los
   Alamos National Laboratory LDRD program; Genome Sequencing Centers (GSC)
   award funded in whole or part with federal funds from the National
   Institute of Allergy and Infectious Diseases, National Institutes of
   Health; and Department of Health and Human Services under contract
   number HHSN272200900007C; HMP Project Award number U54 AI-084844-01
   administered by the National Institute of Allergy and Infectious
   Diseases on behalf of the NIH Roadmap Human Microbiome Project; the
   National Human Research Institute grant NIH-2 R01 HG003647; and the
   Alfred P. Sloan Foundation.
NR 58
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Z9 31
U1 3
U2 35
PU COLD SPRING HARBOR LAB PRESS, PUBLICATIONS DEPT
PI COLD SPRING HARBOR
PA 1 BUNGTOWN RD, COLD SPRING HARBOR, NY 11724 USA
SN 1088-9051
J9 GENOME RES
JI Genome Res.
PD MAY
PY 2013
VL 23
IS 5
BP 878
EP 888
DI 10.1101/gr.142208.112
PG 11
WC Biochemistry & Molecular Biology; Biotechnology & Applied Microbiology;
   Genetics & Heredity
SC Biochemistry & Molecular Biology; Biotechnology & Applied Microbiology;
   Genetics & Heredity
GA 134IA
UT WOS:000318202400012
PM 23493677
ER

PT J
AU Mishra, PK
   Vessilinov, V
   Gupta, H
AF Mishra, Phoolendra Kumar
   Vessilinov, Velimir
   Gupta, Hoshin
TI On Simulation and Analysis of Variable-Rate Pumping Tests
SO GROUND WATER
LA English
DT Article
ID NUMERICAL INVERSION; LAPLACE TRANSFORMS
AB Analytical solutions for constant-rate pumping tests are widely used to infer aquifer properties. In this note, we implement a methodology that approximates the time-varying pumping record as a series of segments with linearly varying pumping rates. We validate our approach using an analytical solution for a sinusoidally varying pumping test. We also apply our methodology to analyze synthetic test data and compare the results with those from a commonly used method where rate variations are represented by a series of constant-rate steps.
C1 [Mishra, Phoolendra Kumar; Vessilinov, Velimir] Los Alamos Natl Lab, Computat Earth Sci Grp, Los Alamos, NM 87545 USA.
   [Gupta, Hoshin] Univ Arizona, Dept Hydrol & Water Resources, Tucson, AZ 85721 USA.
RP Mishra, PK (reprint author), Calif State Univ Fullerton, Dept Civil & Environm, Fullerton, CA 92832 USA.
EM pkmishra@fullerton.edu
RI Gupta, Hoshin/D-1642-2010; Vesselinov, Velimir/P-4724-2016
OI Gupta, Hoshin/0000-0001-9855-2839; Vesselinov,
   Velimir/0000-0002-6222-0530
NR 17
TC 5
Z9 5
U1 0
U2 7
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 0017-467X
J9 GROUND WATER
JI Ground Water
PD MAY-JUN
PY 2013
VL 51
IS 3
BP 469
EP 473
DI 10.1111/j.1745-6584.2012.00961.x
PG 5
WC Geosciences, Multidisciplinary; Water Resources
SC Geology; Water Resources
GA 133WR
UT WOS:000318172100019
PM 22775800
ER

PT J
AU Klise, GT
   Roach, JD
   Kobos, PH
   Heath, JE
   Gutierrez, KA
AF Klise, Geoffrey T.
   Roach, Jesse D.
   Kobos, Peter H.
   Heath, Jason E.
   Gutierrez, Karen A.
TI The cost of meeting increased cooling-water demands for CO2 capture and
   storage utilizing non-traditional waters from geologic saline formations
SO HYDROGEOLOGY JOURNAL
LA English
DT Article
DE CO2 storage; Thermoelectric power water use; Climate change; Groundwater
   exploration; USA
ID CARBON-DIOXIDE; SEQUESTRATION; MANAGEMENT; RISK
AB Deep (> similar to 800 m) saline water-bearing formations in the United States have substantial pore volume that is targeted for storage of carbon dioxide (CO2) and the associated saline water can be extracted to increase CO2 storage efficiency, manage pressure build up, and create a new water source that, once treated, can be used for power-plant cooling or other purposes. Extraction, treatment and disposal costs of saline formation water to meet added water demands from CO2 capture and storage (CCS) are discussed. This underutilized water source may be important in meeting new water demand associated with CCS. For a representative natural gas combined-cycle (NGCC) power plant, simultaneous extraction of brine from the storage formation could provide enough water to meet all CCS-related cooling demands for 177 out of the 185 (96 %) saline formations analyzed in this study. Calculated total cost of water extraction, treatment and disposal is less than 4.00 US Dollars (USD) m(-3) for 93 % of the 185 formations considered. In 90 % of 185 formations, treated water costs are less than 10.00 USD tonne(-1) of CO2 injected. On average, this represents approximately 6 % of the total CO2 capture and injection costs for the NGCC scenario.
C1 [Klise, Geoffrey T.; Roach, Jesse D.; Kobos, Peter H.] Sandia Natl Labs, Earth Syst Anal Dept, Albuquerque, NM 87185 USA.
   [Heath, Jason E.] Sandia Natl Labs, Geomech Dept, Albuquerque, NM 87185 USA.
   [Gutierrez, Karen A.] Sandia Natl Labs, Geotechnol & Engn Dept, Albuquerque, NM 87185 USA.
RP Klise, GT (reprint author), Sandia Natl Labs, Earth Syst Anal Dept, POB 5800,MS 0735, Albuquerque, NM 87185 USA.
EM gklise@sandia.gov
OI Klise, Geoffrey/0000-0001-7461-2737
FU National Energy Technology Laboratory; US Department of Energy's
   National Nuclear Security Administration [DE-AC04-94AL85000]
FX The authors wish to thank Andrea McNemar and the National Energy
   Technology Laboratory for funding this study as well as the review
   provided by Andrea Dunn and two anonymous reviewers. The authors also
   thank Sean McKenna for his technical review of this paper, and Jim
   Krumhansl, Barbara Moreland, and Dave Borns for their assistance with
   this project. Sandia National Laboratories is a multi-program laboratory
   managed and operated by Sandia Corporation, a wholly owned subsidiary of
   Lockheed Martin Corporation, for the US Department of Energy's National
   Nuclear Security Administration under contract DE-AC04-94AL85000.
NR 49
TC 1
Z9 2
U1 0
U2 25
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 1431-2174
J9 HYDROGEOL J
JI Hydrogeol. J.
PD MAY
PY 2013
VL 21
IS 3
BP 587
EP 604
DI 10.1007/s10040-012-0951-2
PG 18
WC Geosciences, Multidisciplinary; Water Resources
SC Geology; Water Resources
GA 131JS
UT WOS:000317989800007
ER

PT J
AU Gao, BJ
   Buttler, D
   Anastasiu, DC
   Wang, SQ
   Zhang, P
   Jan, J
AF Gao, Byron J.
   Buttler, David
   Anastasiu, David C.
   Wang, Shuaiqiang
   Zhang, Peng
   Jan, Joey
TI User-Centric Organization of Search Results
SO IEEE INTERNET COMPUTING
LA English
DT Article
ID WEB
AB Search engines should organize results to minimize user effort. The authors introduce a user-centric approach to organizing search results for the common ranked-list search interface and the alternative clustering interface, letting users personalize how the results are organized. Such personalized views can be combined to provide an aggregated view as a mass-collaborative way of improving search performance. Two working prototypes, Rants and Clustering Wild, show how the approach can serve as a complementary solution for effectively organizing search results.
C1 [Gao, Byron J.; Anastasiu, David C.; Wang, Shuaiqiang; Zhang, Peng; Jan, Joey] Texas State Univ, San Marcos, TX USA.
   [Buttler, David] Lawrence Livermore Natl Lab, Livermore, CA USA.
RP Gao, BJ (reprint author), Texas State Univ, San Marcos, TX USA.
EM bgao@txstate.edu; buttler1@llnl.gov; anast021@umn.edu;
   swang@sdufe.edu.cn; zhangpeng@ict.ac.cn; jj1258@txstate.edu
OI Wang, Shuaiqiang/0000-0002-9212-1947
FU US Department of Energy's Lawrence Livermore National Laboratory
   [DE-AC52-07NA27344]; US National Science Foundation (NSF) [OCI-1062439,
   CNS-1058724]; Texas Norman Hackerman Advanced Research Program (NHARP)
   [003656-0035-2009]
FX This research was supported in part by the US Department of Energy's
   Lawrence Livermore National Laboratory under contract DE-AC52-07NA27344,
   the US National Science Foundation (NSF) under grants OCI-1062439 and
   CNS-1058724, and the Texas Norman Hackerman Advanced Research Program
   (NHARP) under grant 003656-0035-2009.
NR 14
TC 0
Z9 0
U1 0
U2 5
PU IEEE COMPUTER SOC
PI LOS ALAMITOS
PA 10662 LOS VAQUEROS CIRCLE, PO BOX 3014, LOS ALAMITOS, CA 90720-1314 USA
SN 1089-7801
EI 1941-0131
J9 IEEE INTERNET COMPUT
JI IEEE Internet Comput.
PD MAY-JUN
PY 2013
VL 17
IS 3
BP 52
EP 59
PG 8
WC Computer Science, Software Engineering
SC Computer Science
GA 133MP
UT WOS:000318142800008
ER

PT J
AU Amin, R
   Martin, J
   Deaton, J
   DaSilva, LA
   Hussien, A
   Eltawil, A
AF Amin, Rahul
   Martin, Jim
   Deaton, Juan
   DaSilva, Luiz A.
   Hussien, Amr
   Eltawil, Ahmed
TI Balancing Spectral Efficiency, Energy Consumption, and Fairness in
   Future Heterogeneous Wireless Systems with Reconfigurable Devices
SO IEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS
LA English
DT Article
DE heterogeneous wireless networks; reconfigurable radios; scheduling;
   resource allocation; network efficiency
ID NETWORKS
AB In this paper, we present an approach to managing resources in a large-scale heterogeneous wireless network that supports reconfigurable devices. The system under study embodies internetworking concepts requiring independent wireless networks to cooperate in order to provide a unified network to users. We propose a multi-attribute scheduling algorithm implemented by a central Global Resource Controller (GRC) that manages the resources of several different autonomous wireless systems. The attributes considered by the multi-attribute optimization function consist of system spectral efficiency, battery lifetime of each user (or overall energy consumption), and instantaneous and long-term fairness for each user in the system. To compute the relative importance of each attribute, we use the Analytical Hierarchy Process (AHP) that takes interview responses from wireless network providers as input and generates weight assignments for each attribute in our optimization problem. Through Matlab/CPLEX based simulations, we show an increase in a multi-attribute system utility measure of up to 57% for our algorithm compared to other widely studied resource allocation algorithms including Max-Sum Rate, Proportional Fair, Max-Min Fair and Min Power.
C1 [Amin, Rahul] Clemson Univ, Dept Elect & Comp Engn, Clemson, SC 29634 USA.
   [Martin, Jim] Clemson Univ, Sch Comp, Clemson, SC 29634 USA.
   [Deaton, Juan] Idaho Natl Lab, Idaho Falls, ID 83415 USA.
   [DaSilva, Luiz A.] Virginia Tech, Dept Elect & Comp Engn, Blacksburg, VA 24061 USA.
   [DaSilva, Luiz A.] Trinity Coll Dublin, CVTR, Dublin, Ireland.
   [Hussien, Amr; Eltawil, Ahmed] Univ Calif Irvine, Dept Elect & Comp Engn, Irvine, CA 92617 USA.
RP Amin, R (reprint author), Clemson Univ, Dept Elect & Comp Engn, Clemson, SC 29634 USA.
EM ramin@clemson.edu; jmarty@clemson.edu; juan.deaton@gmail.com;
   ldasilva@vt.edu; ahussien@uci.edu; aeltawil@uci.edu
NR 53
TC 11
Z9 12
U1 0
U2 10
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 0733-8716
J9 IEEE J SEL AREA COMM
JI IEEE J. Sel. Areas Commun.
PD MAY
PY 2013
VL 31
IS 5
BP 969
EP 980
DI 10.1109/JSAC.2013.130515
PG 12
WC Engineering, Electrical & Electronic; Telecommunications
SC Engineering; Telecommunications
GA 133TU
UT WOS:000318164300015
ER

PT J
AU Balaji, P
   Matsuoka, S
AF Balaji, Pavan
   Matsuoka, Satoshi
TI Guest Editors' Introduction: Special Issue on Applications for the
   Heterogeneous Computing Era
SO INTERNATIONAL JOURNAL OF HIGH PERFORMANCE COMPUTING APPLICATIONS
LA English
DT Editorial Material
C1 [Balaji, Pavan] Argonne Natl Lab, Argonne, IL 60439 USA.
   [Matsuoka, Satoshi] Tokyo Inst Technol, Tokyo 152, Japan.
RP Balaji, P (reprint author), Argonne Natl Lab, 9700 S Cass Ave, Argonne, IL 60439 USA.
NR 0
TC 0
Z9 0
U1 0
U2 1
PU SAGE PUBLICATIONS LTD
PI LONDON
PA 1 OLIVERS YARD, 55 CITY ROAD, LONDON EC1Y 1SP, ENGLAND
SN 1094-3420
J9 INT J HIGH PERFORM C
JI Int. J. High Perform. Comput. Appl.
PD MAY
PY 2013
VL 27
IS 2
BP 87
EP 88
DI 10.1177/1094342013481158
PG 2
WC Computer Science, Hardware & Architecture; Computer Science,
   Interdisciplinary Applications; Computer Science, Theory & Methods
SC Computer Science
GA 136IW
UT WOS:000318356600001
ER

PT J
AU Meswani, MR
   Carrington, L
   Unat, D
   Snavely, A
   Baden, S
   Poole, S
AF Meswani, Mitesh R.
   Carrington, Laura
   Unat, Didem
   Snavely, Allan
   Baden, Scott
   Poole, Stephen
TI Modeling and predicting performance of high performance computing
   applications on hardware accelerators
SO INTERNATIONAL JOURNAL OF HIGH PERFORMANCE COMPUTING APPLICATIONS
LA English
DT Article
DE accelerators; benchmarking; FPGA; GPU; HPC; idioms; performance
   modeling; performance prediction
ID PARALLEL COMPUTATION; CONVEY HC-1; ARCHITECTURES; SIMULATION; LOGP
AB Hybrid-core systems speedup applications by offloading certain compute operations that can run faster on hardware accelerators. However, such systems require significant programming and porting effort to gain a performance benefit from the accelerators. Therefore, prior to porting it is prudent to investigate the predicted performance benefit of accelerators for a given workload. To address this problem we present a performance-modeling framework that predicts the application performance rapidly and accurately for hybrid-core systems. We present predictions for two full-scale HPC applications-HYCOM and Milc. Our results for two accelerators (GPU and FPGA) show that gather/scatter and stream operations can speedup by as much as a factor of 15 and overall compute time of Milc and HYCOM improve by 3.4% and 20%, respectively. We also show that in order to benefit from the accelerators, 70% of the latency of data transfer time between the CPU and the accelerators needs to be overcome.
C1 [Meswani, Mitesh R.; Carrington, Laura] San Diego Supercomp Ctr, PMaC Lab, La Jolla, CA 92093 USA.
   [Snavely, Allan] San Diego Supercomp Ctr, La Jolla, CA 92093 USA.
   [Unat, Didem] Univ Calif San Diego, San Diego, CA 92103 USA.
   [Baden, Scott] Univ Calif San Diego, Dept Comp Sci & Engn, San Diego, CA 92103 USA.
   [Poole, Stephen] Oak Ridge Natl Lab, Oak Ridge, TN USA.
   [Poole, Stephen] Oak Ridge Natl Lab, Extreme Scale Syst Ctr, Oak Ridge, TN USA.
RP Meswani, MR (reprint author), San Diego Supercomp Ctr, PMaC Lab, 9500 Gilman Dr,MC 0505, La Jolla, CA 92093 USA.
EM mitesh.meswani@gmail.com
FU DoD; Office of Science of the US Department of Energy
   [DE-AC05-00OR22725]
FX This work was supported by the DoD and used elements at the Extreme
   Scale Systems Center, located at ORNL and funded by the DoD. This
   research used resources of the National Center for Computational
   Sciences at Oak Ridge National Laboratory, which is supported by the
   Office of Science of the US Department of Energy under Contract No.
   DE-AC05-00OR22725. We would like to thank Ross Walker for the use of
   FERMI GPU for experiments. We would also like to thank Convey computers
   for providing the Graph500 personality used in our validation
   experiments.
NR 39
TC 9
Z9 9
U1 0
U2 22
PU SAGE PUBLICATIONS LTD
PI LONDON
PA 1 OLIVERS YARD, 55 CITY ROAD, LONDON EC1Y 1SP, ENGLAND
SN 1094-3420
J9 INT J HIGH PERFORM C
JI Int. J. High Perform. Comput. Appl.
PD MAY
PY 2013
VL 27
IS 2
BP 89
EP 108
DI 10.1177/1094342012468180
PG 20
WC Computer Science, Hardware & Architecture; Computer Science,
   Interdisciplinary Applications; Computer Science, Theory & Methods
SC Computer Science
GA 136IW
UT WOS:000318356600002
ER

PT J
AU Akkan, H
   Lang, M
   Liebrock, L
AF Akkan, Hakan
   Lang, Michael
   Liebrock, Lorie
TI Understanding and isolating the noise in the Linux kernel
SO INTERNATIONAL JOURNAL OF HIGH PERFORMANCE COMPUTING APPLICATIONS
LA English
DT Article
DE noise; jitter; partitioning; Linux; scheduling
AB Scientific applications are interrupted by the operating system far too often. Historically, operating systems have been optimized to time-share a single resource, the CPU. We now have an abundance of cores, but we are still swapping out the application to run other tasks and therefore increasing the application's time to solution. In addition, with parallel applications the probability of one of the tasks entering a synchronization point late due to one of these interrupts increases with increasing system scale, which further increases the application turn-around time. This paper reviews measures that can be taken to reduce application interruption using only compile and run time configurations in a recent unmodified Linux kernel. Although these measures have been available for some time, to the best of the authors' knowledge, they have never been implemented in a high-performance computing context. We then introduce our invasive method, where we remove the involuntary preemption induced by task scheduling. Our experiments show that parallel applications benefit from these modifications even at relatively small scales. At the modest scale of our testbed, we see a 1.91% improvement in a bulk-synchronous-parallel application that should project into higher benefits at extreme scales.
C1 [Akkan, Hakan] New Mexico Consortium, Los Alamos, NM 87544 USA.
   [Lang, Michael] Los Alamos Natl Lab, Los Alamos, NM USA.
   [Liebrock, Lorie] New Mexico Inst Min & Technol, Socorro, NM 87801 USA.
RP Akkan, H (reprint author), New Mexico Consortium, 4200 West Jemez Rd,Suite 301, Los Alamos, NM 87544 USA.
EM hakkan@nmt.edu
FU U.S. Department of Energy's National Nuclear Security Administration
   [DE-AC52-06NA25396]; Los Alamos National Security, LLC
FX This work was supported in part by the U.S. Department of Energy's
   National Nuclear Security Administration (contract number
   DE-AC52-06NA25396 with Los Alamos National Security, LLC).
NR 16
TC 1
Z9 1
U1 10
U2 19
PU SAGE PUBLICATIONS LTD
PI LONDON
PA 1 OLIVERS YARD, 55 CITY ROAD, LONDON EC1Y 1SP, ENGLAND
SN 1094-3420
J9 INT J HIGH PERFORM C
JI Int. J. High Perform. Comput. Appl.
PD MAY
PY 2013
VL 27
IS 2
BP 136
EP 146
DI 10.1177/1094342013477892
PG 11
WC Computer Science, Hardware & Architecture; Computer Science,
   Interdisciplinary Applications; Computer Science, Theory & Methods
SC Computer Science
GA 136IW
UT WOS:000318356600006
ER

PT J
AU Kulkarni, A
   Ionkov, L
   Lang, M
   Lumsdaine, A
AF Kulkarni, Abhishek
   Ionkov, Latchesar
   Lang, Michael
   Lumsdaine, Andrew
TI Optimizing process creation and execution on multi-core architectures
SO INTERNATIONAL JOURNAL OF HIGH PERFORMANCE COMPUTING APPLICATIONS
LA English
DT Article
DE process spawn optimization; scalable intra-node process launch; batched
   system calls; vector operating system interfaces; manycore runtime
   systems
AB The execution of a single process multiple data (SPMD) application involves running multiple instances of a process with possibly varying arguments. With the widespread adoption of massively multicore processors, there has been a focus towards harnessing the abundant compute resources effectively in a power-efficient manner. Although much work has been done towards optimizing distributed process launch using hierarchical techniques, there has been a void in studying the performance of spawning processes within a single node. Reducing the latency to spawn a new process locally results in faster global job launch. Further, emerging dynamic and resilient execution models are designed on the premise of maintaining process pools for fault isolation and launching several processes in a relatively shorter period of time. Optimizing the latency and throughput for spawning processes would help improve the overall performance of runtime systems, allow adaptive process-replication reliability and motivate the design and implementation of process management interfaces in future manycore operating systems. In this paper, we study the several limiting factors for efficient spawning of processes on massively multicore architectures. We have developed a library to optimize launching multiple instances of the same executable. Our microbenchmarks show a 20-80% decrease in the process spawn time for multiple executables. We further discuss the effects of memory locality and propose NUMA-aware extensions to optimize launching processes with large memory-mapped segments including dynamic shared libraries. Finally, we describe vector operating system interfaces for spawning a batch of processes from a given executable on specific cores. Our results show a speedup of a factor of 40-50 over the traditional method of launching new processes using fork and exec system calls.
C1 [Kulkarni, Abhishek; Lumsdaine, Andrew] Indiana Univ, Ctr Res Extreme Scale Technol, Dept Comp Sci, Bloomington, IN 47408 USA.
   [Kulkarni, Abhishek; Ionkov, Latchesar; Lang, Michael] Los Alamos Natl Lab, Ultrascale Syst Res Ctr, Los Alamos, NM USA.
RP Kulkarni, A (reprint author), Indiana Univ, Ctr Res Extreme Scale Technol, 2719 East 10th St, Bloomington, IN 47408 USA.
EM adkulkar@indiana.edu
FU US Department of Energy's NNSA [DE-AC52-06NA25396]; Los Alamos National
   Security, LLC.
FX This work was supported in part by the US Department of Energy's NNSA
   (contract number DE-AC52-06NA25396) with Los Alamos National Security,
   LLC.
NR 22
TC 1
Z9 1
U1 0
U2 5
PU SAGE PUBLICATIONS LTD
PI LONDON
PA 1 OLIVERS YARD, 55 CITY ROAD, LONDON EC1Y 1SP, ENGLAND
SN 1094-3420
J9 INT J HIGH PERFORM C
JI Int. J. High Perform. Comput. Appl.
PD MAY
PY 2013
VL 27
IS 2
BP 147
EP 161
DI 10.1177/1094342013481483
PG 15
WC Computer Science, Hardware & Architecture; Computer Science,
   Interdisciplinary Applications; Computer Science, Theory & Methods
SC Computer Science
GA 136IW
UT WOS:000318356600007
ER

PT J
AU Malas, T
   Ahmadia, AJ
   Brown, J
   Gunnels, JA
   Keyes, DE
AF Malas, Tareq
   Ahmadia, Aron J.
   Brown, Jed
   Gunnels, John A.
   Keyes, David E.
TI Optimizing the performance of streaming numerical kernels on the IBM
   Blue Gene/P PowerPC 450 processor
SO INTERNATIONAL JOURNAL OF HIGH PERFORMANCE COMPUTING APPLICATIONS
LA English
DT Article
DE high-performance computing; performance optimization; code generation;
   SIMD; Blue Gene/P
ID STENCIL COMPUTATIONS; PARALLELIZATION; ARCHITECTURES; CONSTRAINTS;
   PROJECT; LOOPS
AB Several emerging petascale architectures use energy-efficient processors with vectorized computational units and in-order thread processing. On these architectures the sustained performance of streaming numerical kernels, ubiquitous in the solution of partial differential equations, represents a challenge despite the regularity of memory access. Sophisticated optimization techniques are required to fully utilize the CPU. We propose a new method for constructing streaming numerical kernels using a high-level assembly synthesis and optimization framework. We describe an implementation of this method in Python targeting the IBM (R) Blue Gene (R)/P supercomputer's PowerPC (R) 450 core. This paper details the high-level design, construction, simulation, verification, and analysis of these kernels utilizing a subset of the CPU's instruction set. We demonstrate the effectiveness of our approach by implementing several three-dimensional stencil kernels over a variety of cached memory scenarios and analyzing the mechanically scheduled variants, including a 27-point stencil achieving a 1.7x speedup over the best previously published results.
C1 [Malas, Tareq; Ahmadia, Aron J.; Keyes, David E.] King Abdullah Univ Sci & Technol, Thuwal 23955, Saudi Arabia.
   [Brown, Jed] Argonne Natl Lab, Argonne, IL 60439 USA.
   [Gunnels, John A.] IBM TJ Watson Res Ctr, Yorktown Hts, NY USA.
RP Malas, T (reprint author), King Abdullah Univ Sci & Technol, Math & Comp Sci & Engn Div, Thuwal 23955, Saudi Arabia.
EM tareq.malas@kaust.edu.sa
OI Keyes, David Elliot/0000-0002-4052-7224
NR 45
TC 1
Z9 1
U1 0
U2 6
PU SAGE PUBLICATIONS LTD
PI LONDON
PA 1 OLIVERS YARD, 55 CITY ROAD, LONDON EC1Y 1SP, ENGLAND
SN 1094-3420
J9 INT J HIGH PERFORM C
JI Int. J. High Perform. Comput. Appl.
PD MAY
PY 2013
VL 27
IS 2
BP 193
EP 209
DI 10.1177/1094342012444795
PG 17
WC Computer Science, Hardware & Architecture; Computer Science,
   Interdisciplinary Applications; Computer Science, Theory & Methods
SC Computer Science
GA 136IW
UT WOS:000318356600010
ER

PT J
AU Felker, KG
   Siegel, AR
   Siegel, SF
AF Felker, K. G.
   Siegel, A. R.
   Siegel, S. F.
TI Optimizing Memory Constrained Environments in Monte Carlo Nuclear
   Reactor Simulations
SO INTERNATIONAL JOURNAL OF HIGH PERFORMANCE COMPUTING APPLICATIONS
LA English
DT Article
DE Monte Carlo; neutron; reactor analysis limited; memory domain;
   decomposition
AB Monte Carlo neutron transport codes are a growing subject of research in nuclear reactor analysis. For robust reactor analysis, large scale neutron transport simulations require computation of reaction rates for tens of billions of particles involving several hundred isotopes. When employing physical-space domain decomposition, minimizing memory consumption while safely and efficiently exchanging massive amounts of data is a significant challenge. To address this problem, we implement and test several "memory-aware", in-place, sparse, all-to-all MPI communication implementations. The algorithms are developed and tested within the open source MADRE (Memory-Aware Data Redistribution) project, which gives application programmers a simple API and set of tools and algorithms for carrying out memory-transparent in-place communication. We explore memory and communication efficiency tradeoffs for a range of in-place algorithms using a simple Monte Carlo communication kernel intended to mimic the behavior of our full Monte Carlo neutronics code.
C1 [Felker, K. G.] Argonne Natl Lab, Math Camputer Sci Div, Argonne, IL 60439 USA.
   [Siegel, A. R.] Argonne Natl Lab, Math Comp Sci Div, Argonne, IL 60439 USA.
   [Siegel, A. R.] Argonne Natl Lab, Nucl Energy Div, Argonne, IL 60439 USA.
   [Siegel, S. F.] Univ Delaware, Dept Comp & Informat Sci, Newark, DE 19716 USA.
RP Felker, KG (reprint author), Argonne Natl Lab, 9700 South Cass Ave,Bldg 240,2F8, Argonne, IL 60439 USA.
EM felker@mcs.anl.gov
FU Office of Advanced Scientific Computing Research, Office of Science,
   U.S. Department of Energy [DE-AC02-06CH11357]; NSF [CNS-0958512]; U.S.
   Department of Energy [DE-AC02-06CH11357]
FX This work was supported by the Office of Advanced Scientific Computing
   Research, Office of Science, U.S. Department of Energy, under Contract
   DE-AC02-06CH11357. The Chimera computer used in this research was funded
   by NSF Award CNS-0958512.; The submitted manuscript has been created by
   the University of Chicago as Operator of Argonne National Laboratory
   ("Argonne'') under Contract DE-AC02-06CH11357 with the U.S. Department
   of Energy. The U.S. Government retains for itself, and others acting on
   its behalf, a paid-up, nonexclusive, irrevocable worldwide license in
   said article to reproduce, prepare derivative works, distribute copies
   to the public, and perform publicly and display publicly, by or on
   behalf of the Government.
NR 13
TC 1
Z9 1
U1 0
U2 0
PU SAGE PUBLICATIONS LTD
PI LONDON
PA 1 OLIVERS YARD, 55 CITY ROAD, LONDON EC1Y 1SP, ENGLAND
SN 1094-3420
J9 INT J HIGH PERFORM C
JI Int. J. High Perform. Comput. Appl.
PD MAY
PY 2013
VL 27
IS 2
BP 210
EP 216
DI 10.1177/1094342012445627
PG 7
WC Computer Science, Hardware & Architecture; Computer Science,
   Interdisciplinary Applications; Computer Science, Theory & Methods
SC Computer Science
GA 136IW
UT WOS:000318356600011
ER

PT J
AU Niemann, GS
   Brown, RN
   Mushamiri, IT
   Nguyen, NT
   Taiwo, R
   Stufkens, A
   Smith, RD
   Adkins, JN
   McDermott, JE
   Heffron, F
AF Niemann, George S.
   Brown, Roslyn N.
   Mushamiri, Ivy T.
   Nguyen, Nhu T.
   Taiwo, Rukayat
   Stufkens, Afke
   Smith, Richard D.
   Adkins, Joshua N.
   McDermott, Jason E.
   Heffron, Fred
TI RNA Type III Secretion Signals That Require Hfq
SO JOURNAL OF BACTERIOLOGY
LA English
DT Article
ID ENTERICA SEROVAR TYPHIMURIUM; YERSINIA-ENTEROCOLITICA;
   SALMONELLA-TYPHIMURIUM; MUTATIONAL ANALYSIS; ESCHERICHIA-COLI;
   VIRULENCE; BACTERIAL; CHAPERONE; SYSTEMS; YOPE
AB Salmonella virulence is largely mediated by two type III secretion systems (T3SS) that deliver effector proteins from the bacterium to a host cell; however, the secretion signal is poorly defined. Effector N termini are thought to contain the signal, but they lack homology, possess no identifiable motif, and adopt intrinsically disordered structures. Alternative studies suggest that RNA-encoded signals may also be recognized and that they can be located in the 5' untranslated leader sequence. We began our study by establishing the minimum sequence required for reporter translocation. Untranslated leader sequences predicted from 42 different Salmonella effector proteins were fused to the adenylate cyclase reporter (CyaA'), and each of them was tested for protein injection into J774 macrophages. RNA sequences derived from five effectors, gtgA, cigR, gogB, sseL, and steD, were sufficient for CyaA' translocation into host cells. To determine the mechanism of signal recognition, we identified proteins that bound specifically to the gtgA RNA. One of the unique proteins identified was Hfq. Hfq had no effect upon the translocation of full-length CigR and SteD, but injection of intact GtgA, GogB, and SseL was abolished in an hfq mutant, confirming the importance of Hfq. Our results demonstrated that the Salmonella pathogenicity island 2 (SPI-2) T3SS assembled into a functional apparatus independently of Hfq. Since particular effectors required Hfq for translocation, Hfq-RNA complexes may participate in signal recognition.
C1 [Niemann, George S.; Mushamiri, Ivy T.; Nguyen, Nhu T.; Taiwo, Rukayat; Stufkens, Afke; Heffron, Fred] Oregon Hlth & Sci Univ, Dept Microbiol & Immunol, Portland, OR 97201 USA.
   [Brown, Roslyn N.; Smith, Richard D.; Adkins, Joshua N.] Pacific NW Natl Lab, Div Biol Sci, Richland, WA 99352 USA.
   [McDermott, Jason E.] Pacific NW Natl Lab, Richland, WA 99352 USA.
RP Niemann, GS (reprint author), Oregon Hlth & Sci Univ, Dept Microbiol & Immunol, Portland, OR 97201 USA.
EM niemanng@ohsu.edu
RI Smith, Richard/J-3664-2012
OI Smith, Richard/0000-0002-2381-2349
FU National Institute of Allergy and Infectious Diseases, NIH/DHHS
   [Y1-A1-8401-01]; NIH/NIAID [A1022933-22A1]; National Institute of
   General Medical Sciences [GM094623]; National Center for Research
   Resources [RR 018522]; U.S. Department of Energy's Office of Biological
   and Environmental Research (DOE/BER); DOE [DE-AC05-76RL01830]
FX Support for this work was provided by the National Institute of Allergy
   and Infectious Diseases, NIH/DHHS, through interagency agreement
   Y1-A1-8401-01, by NIH/NIAID grant A1022933-22A1 to F. H., and the
   National Institute of General Medical Sciences (grant GM094623). This
   work used instrumentation and capabilities developed with support from
   the National Center for Research Resources (grant RR 018522 to R. D. S.)
   and the U.S. Department of Energy's Office of Biological and
   Environmental Research (DOE/BER).; Proteomic analyses were performed in
   the Environmental Molecular Sciences Laboratory, a DOE/BER national
   scientific user facility on the Pacific Northwest National Laboratory
   (PNNL) campus in Richland, WA. PNNL is a multiprogram national
   laboratory operated by Battelle for the DOE under contract
   DE-AC05-76RL01830. Mass spectrometry results are available via
   sysbep.org and omics.pnl.gov.
NR 40
TC 8
Z9 9
U1 1
U2 10
PU AMER SOC MICROBIOLOGY
PI WASHINGTON
PA 1752 N ST NW, WASHINGTON, DC 20036-2904 USA
SN 0021-9193
J9 J BACTERIOL
JI J. Bacteriol.
PD MAY
PY 2013
VL 195
IS 10
BP 2119
EP 2125
DI 10.1128/JB.00024-13
PG 7
WC Microbiology
SC Microbiology
GA 131WH
UT WOS:000318027800002
PM 23396917
ER

PT J
AU Miller, AW
   Rodriguez, DR
   Honeyman, BD
AF Miller, Andrew W.
   Rodriguez, Derrick R.
   Honeyman, Bruce D.
TI Simplified behaviors from increased heterogeneity: I. 2-D uranium
   transport experiments at the decimeter scale
SO JOURNAL OF CONTAMINANT HYDROLOGY
LA English
DT Article
DE Upscaling; Sorption; Metals; Radionuclides; Complexity
ID INTERMEDIATE-SCALE; REACTIVE TRANSPORT; POROUS-MEDIA; DISTRIBUTION
   COEFFICIENTS; AQUIFER SEDIMENTS; SORPTION; ADSORPTION; DISPERSION;
   CALCIUM; FLOW
AB Intermediate scale tank studies were conducted to examine the effects of physical heterogeneity of aquifer material on uranium desorption and subsequent transport in order to bridge the scaling gap between bench and field scale systems. Uranium contaminated sediment from a former uranium mill field site was packed into two 2-D tanks with internal dimensions of 2.44 x 1.22 x 0.076 m (tank 1) and 2.44 x 0.61 x 0.076 m (tank 2). Tank 1 was packed in a physically homogenous manner, and tank 2 was packed with long lenses of high and low conductivities resulting in different flow fields within the tanks. Chemical gradients within the flow domain were altered by temporal changes in influent water chemistry. The uranium source was desorption from the sediment. Despite the physical differences in the flow fields, there were minimal differences in global uranium leaching behavior between the two tanks. The dominant uranium species in both tanks over time and space was Ca2UO2(CO3)(3)(0). However, the uranium/alkalinity relationships varied as a function of time in tank I and were independent of time in tank 2. After planned stop-flow events, small, short-lived rebounds were observed in tank 1 while no rebound of uranium concentrations was observed in tank 2. Despite appearing to be in local equilibrium with respect to uranium desorption, a previously derived surface complexation model was insufficient to describe uranium partitioning within the flow domain. This is the first in a pair of papers; the companion paper presents an intermediate scale 3-D tank experiment and inter-tank comparisons. For these systems, physical heterogeneity at or above the decimeter scale does not affect global scale uranium desorption and transport. Instead, uranium fluxes are controlled by chemistry dependent desorption patterns induced by changing the influent ionic composition. Published by Elsevier B.V.
C1 [Miller, Andrew W.; Rodriguez, Derrick R.; Honeyman, Bruce D.] Colorado Sch Mines, Golden, CO 80401 USA.
   [Miller, Andrew W.] Sandia Natl Labs, Albuquerque, NM 87123 USA.
RP Miller, AW (reprint author), Sandia Natl Labs, Albuquerque, NM 87123 USA.
EM andmill@sandia.gov
FU Department of Energy [DE-FG02-06ER64233]
FX This material is based upon work supported by the Department of Energy
   under Award number: DE-FG02-06ER64233. This work would not have been
   possible without the ongoing collaborative efforts from James Davis,
   Gary Curtis, Matthias Kohler, and Carl Steefel. Field sediment
   collection and preparation would not have been possible without:
   Patricia Fox, Jennifer Joye, Kelly Johnson, Linda Figueroa, Ana Ruiz,
   and Jason Deardorff. Tank construction, sediment sieving and tank
   sampling were greatly aided by: Emily Lesher, Seth Davis, Jason
   Peterson, and Andrea Koenig. Joern Larson performed all of the
   alkalinity titrations. Also, the manuscript benefited greatly due to a
   tremendously in-depth and unambiguous review by Michael Hay and Laura
   Beer, as well as four anonymous reviewers.
NR 36
TC 4
Z9 4
U1 4
U2 22
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0169-7722
J9 J CONTAM HYDROL
JI J. Contam. Hydrol.
PD MAY
PY 2013
VL 148
BP 39
EP 50
DI 10.1016/j.jconhyd.2012.11.011
PG 12
WC Environmental Sciences; Geosciences, Multidisciplinary; Water Resources
SC Environmental Sciences & Ecology; Geology; Water Resources
GA 134EL
UT WOS:000318192800004
PM 23357486
ER

PT J
AU Miller, AW
   Rodriguez, DR
   Honeyman, BD
AF Miller, Andrew W.
   Rodriguez, Derrick R.
   Honeyman, Bruce D.
TI Simplified behaviors from increased heterogeneity: II. 3-D Uranium
   transport at the decimeter scale and intertank comparisons
SO JOURNAL OF CONTAMINANT HYDROLOGY
LA English
DT Article
DE Metals; Radionuclides; Mineral weathering; Upscaling
ID SURFACE COMPLEXATION MODEL; INTERMEDIATE-SCALE; REACTIVE TRANSPORT;
   DISSOLUTION RATES; SORPTION BEHAVIOR; POROUS-MEDIA; HUMIC-ACID;
   ADSORPTION; U(VI); PHYLLITE
AB Upscaling from bench scale systems to field scale systems incorporates physical and chemical heterogeneities from atomistic up to field scales. Heterogeneities of intermediate scale (similar to 10(-1) m) are impossible to incorporate in a bench scale experiment. To transcend these scale discrepancies, this second in a pair of papers presents results from an intermediate scale, 3-D tank experiment completed using five different particle sizes of uranium contaminated sediment from a former uranium mill field site. The external dimensions of the tank were 2.44 mx0.61 mx0.61 m (LxHxW). The five particle sizes were packed in a heterogeneous manner using roughly 11 cm cubes. Small groundwater wells were installed for spatial characterization of chemical gradients and flow parameters. An approximately six month long bromide tracer test was used for flow field characterization. Within the flow domain, local uranium breakthrough curves exhibited a wide range of behaviors. However, the global effluent breakthrough curve was smooth, and not unlike breakthrough curves observed in column scale experiments. This paper concludes with an inter-tank comparison of all three experimental systems presented in this pair of papers. Although there is a wide range of chemical and physical variability between the three tanks, major chemical constituent behaviors are often quite similar or even identical. (C) 2013 Elsevier B.V. All rights reserved.
C1 [Miller, Andrew W.; Rodriguez, Derrick R.; Honeyman, Bruce D.] Colorado Sch Mines, Golden, CO 80401 USA.
   [Miller, Andrew W.] Sandia Natl Labs, Albuquerque, NM 87123 USA.
RP Miller, AW (reprint author), Sandia Natl Labs, Albuquerque, NM 87123 USA.
EM andmill@sandia.gov
FU Department of Energy [DE-FG02-06ER64233]
FX This material is based upon work supported by the Department of Energy
   under Award Number: DE-FG02-06ER64233. This work would not have been
   possible without ongoing collaborative efforts from James Davis, Gary
   Curtis, Matthias Kohler, and Carl Steefel. Field sediment collection and
   preparation over nine days in 35-40 degrees C heat would not have been
   possible without: Patricia Fox, Jennifer Joye, Kelly Johnson, Linda
   Figueroa, Ana Ruiz, and Jason Deardorff. Tank construction, sediment
   sieving and tank sampling were greatly aided by Emily Lesher, Seth
   Davis, Jason Peterson, and Andrea Koenig. Joern Larson performed all of
   the alkalinity titrations. Also, the manuscript benefited greatly due to
   a tremendously in-depth and unambiguous review by Michael Hay, and three
   anonymous reviewers.
NR 29
TC 3
Z9 3
U1 2
U2 13
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0169-7722
J9 J CONTAM HYDROL
JI J. Contam. Hydrol.
PD MAY
PY 2013
VL 148
BP 51
EP 66
DI 10.1016/j.jconhyd.2012.12.011
PG 16
WC Environmental Sciences; Geosciences, Multidisciplinary; Water Resources
SC Environmental Sciences & Ecology; Geology; Water Resources
GA 134EL
UT WOS:000318192800005
PM 23399383
ER

PT J
AU Segundo, FDS
   Dias, CCA
   Moraes, MP
   Weiss, M
   Perez-Martin, E
   Owens, G
   Custer, M
   Kamrud, K
   de los Santos, T
   Grubman, MJ
AF Segundo, Fayna Diaz-San
   Dias, Camila C. A.
   Moraes, Mauro P.
   Weiss, Marcelo
   Perez-Martin, Eva
   Owens, Gary
   Custer, Max
   Kamrud, Kurt
   de los Santos, Teresa
   Grubman, Marvin J.
TI Venezuelan Equine Encephalitis Replicon Particles Can Induce Rapid
   Protection against Foot-and-Mouth Disease Virus
SO JOURNAL OF VIROLOGY
LA English
DT Article
ID INNATE IMMUNE-RESPONSE; TOLL-LIKE RECEPTORS; ANTIVIRAL ACTIVITY;
   INTERFERON-ALPHA; SUBUNIT VACCINE; III INTERFERON; IN-VIVO; CHALLENGE;
   MICE; FMDV
AB We have previously shown that delivery of the porcine type I interferon gene (poIFN-alpha/beta) with a replication-defective human adenovirus vector (adenovirus 5 [Ad5]) can sterilely protect swine challenged with foot-and-mouth disease virus (FMDV) 1 day later. However, the need of relatively high doses of Ad5 limits the applicability of such a control strategy in the livestock industry. Venezuelan equine encephalitis virus (VEE) empty replicon particles (VRPs) can induce rapid protection of mice against either homologous or, in some cases, heterologous virus challenge. As an alternative approach to induce rapid protection against FMDV, we have examined the ability of VRPs containing either the gene for green fluorescent protein (VRP-GFP) or poIFN-alpha (VRP-poIFN-alpha) to block FMDV replication in vitro and in vivo. Pretreatment of swine or bovine cell lines with either VRP significantly inhibited subsequent infection with FMDV as early as 6 h after treatment and for at least 120 h posttreatment. Furthermore, mice pretreated with either 10(7) or 10(8) infectious units of VRP-GFP and challenged with a lethal dose of FMDV 24 h later were protected from death. Protection was induced as early as 6 h after treatment and lasted for at least 48 h and correlated with induction of an antiviral response and production of IFN-alpha. By 6 h after treatment several genes were upregulated, and the number of genes and the level of induction increased at 24 h. Finally, we demonstrated that the chemokine IP-10, which is induced by IFN-alpha and VRP-GFP, is directly involved in protection against FMDV.
C1 [Segundo, Fayna Diaz-San; Dias, Camila C. A.; Weiss, Marcelo; Perez-Martin, Eva; de los Santos, Teresa; Grubman, Marvin J.] ARS, Plum Isl Anim Dis Ctr, North Atlantic Area, USDA, Greenport, NY USA.
   [Dias, Camila C. A.; Weiss, Marcelo; Perez-Martin, Eva] PIADC Res Participat Program, Oak Ridge Inst Sci & Educ, Oak Ridge, TN USA.
   [Moraes, Mauro P.] Univ Connecticut, Dept Pathobiol & Vet Sci, Storrs, CT USA.
   [Owens, Gary; Custer, Max; Kamrud, Kurt] AlphaVax, Res Triangle Pk, NC USA.
RP Grubman, MJ (reprint author), ARS, Plum Isl Anim Dis Ctr, North Atlantic Area, USDA, Greenport, NY USA.
EM marvin.grubman@ars.usda.gov
RI Weiss, Marcelo/I-1274-2012
OI Weiss, Marcelo/0000-0001-7902-3210
FU Plum Island Animal Disease Research Participation Program; CRIS project,
   ARS, USDA [1940-32000-057-00D]; Science and Technology Directorate of
   the U.S. Department of Homeland Security [HSHQDC-09-X00373,
   HSHQDC-11-X-00189]
FX This research was supported in part by the Plum Island Animal Disease
   Research Participation Program administered by the Oak Ridge Institute
   for Science and Education through an interagency agreement between the
   U.S. Department of Energy and the U.S. Department of Agriculture
   (appointments of C.C.A.D., M.W., and E.P.-M.), by CRIS project number
   1940-32000-057-00D, ARS, USDA (M.J.G. and T.D.L.S.), and by grants
   through an interagency agreement with the Science and Technology
   Directorate of the U.S. Department of Homeland Security under Award
   Numbers HSHQDC-09-X00373 and HSHQDC-11-X-00189 (M.J.G. and T.D.L.S).
NR 40
TC 4
Z9 5
U1 1
U2 5
PU AMER SOC MICROBIOLOGY
PI WASHINGTON
PA 1752 N ST NW, WASHINGTON, DC 20036-2904 USA
SN 0022-538X
EI 1098-5514
J9 J VIROL
JI J. Virol.
PD MAY
PY 2013
VL 87
IS 10
BP 5447
EP 5460
DI 10.1128/JVI.03462-12
PG 14
WC Virology
SC Virology
GA 133QT
UT WOS:000318155000012
ER

PT J
AU Stevens, TK
   Palaniappan, KK
   Ramirez, RM
   Francis, MB
   Wemmer, DE
   Pines, A
AF Stevens, Todd K.
   Palaniappan, Krishnan K.
   Ramirez, R. Matthew
   Francis, Matthew B.
   Wemmer, David E.
   Pines, Alex
TI HyperCEST detection of a 129Xe-based contrast agent composed of
   cryptophane-A molecular cages on a bacteriophage scaffold
SO MAGNETIC RESONANCE IN MEDICINE
LA English
DT Article
DE xenon; M13 bacteriophage; hyperCEST; cryptophane
ID HYPERPOLARIZED XENON; FUNCTIONALIZED XENON; PARACEST AGENTS; XE-129 NMR;
   BIOSENSOR; MRI; SPECTROSCOPY; LIBRARIES; BLOOD
AB A hyperpolarized 129Xe contrast agent composed of many cryptophane-A molecular cages assembled on an M13 bacteriophage has been demonstrated. Saturation of xenon bound in the large number of cryptophane cages is transferred to the pool of aqueous-solvated xenon via chemical exchange, resulting in efficient generation of hyperCEST contrast. No significant loss of contrast per cryptophane cage was observed for the multivalent phage when compared with unscaffolded cryptophane. Detection of this phage-based hyperCEST agent is reported at concentrations as low as 230 fM, representing the current lower limit for NMR/MRI-based contrast agents. Magn Reson Med, 2013. (c) 2012 Wiley Periodicals, Inc.
C1 [Stevens, Todd K.; Palaniappan, Krishnan K.; Ramirez, R. Matthew; Francis, Matthew B.; Wemmer, David E.; Pines, Alex] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94720 USA.
   [Stevens, Todd K.; Palaniappan, Krishnan K.; Ramirez, R. Matthew; Francis, Matthew B.; Pines, Alex] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA.
   [Wemmer, David E.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Phys Biosci Div, Berkeley, CA 94720 USA.
RP Stevens, TK (reprint author), Univ Calif Berkeley, QB3 Stanley Hall,Room 208C, Berkeley, CA 94720 USA.
EM tkstevens@gmail.com
FU NSERC; U.S. Department of Energy [DE-AC02-05CH11231]; U.S. Department of
   Defense Breast Cancer Research Program [BC061995]
FX Grant sponsor: NSERC (Postdoctoral Fellowship award to T. K. S.); Grant
   sponsor: U.S. Department of Energy; Grant number: DE-AC02-05CH11231;
   Grant sponsor: U.S. Department of Defense Breast Cancer Research
   Program; Grant number: BC061995.
NR 39
TC 29
Z9 29
U1 1
U2 37
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 0740-3194
J9 MAGN RESON MED
JI Magn. Reson. Med.
PD MAY
PY 2013
VL 69
IS 5
BP 1245
EP 1252
DI 10.1002/mrm.24371
PG 8
WC Radiology, Nuclear Medicine & Medical Imaging
SC Radiology, Nuclear Medicine & Medical Imaging
GA 131VX
UT WOS:000318026400006
PM 22791581
ER

PT J
AU Ji, BM
   Gehring, CA
   Wilson, GWT
   Miller, RM
   Flores-Renteria, L
   Johnson, NC
AF Ji, Baoming
   Gehring, Catherine A.
   Wilson, Gail W. T.
   Miller, R. M.
   Flores-Renteria, Lluvia
   Johnson, Nancy Collins
TI Patterns of diversity and adaptation in Glomeromycota from three prairie
   grasslands
SO MOLECULAR ECOLOGY
LA English
DT Article
DE arbuscular mycorrhizas; Gigaspora; local adaptation; prairies;
   reciprocal inoculation
ID ARBUSCULAR MYCORRHIZAL FUNGI; COMMUNITY STRUCTURE; TALLGRASS PRAIRIE;
   NORTH-AMERICA; PLANT-GROWTH; LAND PLANTS; HOST-PLANT; SOIL-PH;
   COLONIZATION; ROOTS
AB Arbuscular mycorrhizal (AM) fungi are widespread root symbionts that often improve the fitness of their plant hosts. We tested whether local adaptation in mycorrhizal symbioses would shape the community structure of these root symbionts in a way that maximizes their symbiotic functioning. We grew a native prairie grass (Andropogon gerardii) with all possible combinations of soils and AM fungal inocula from three different prairies that varied in soil characteristics and disturbance history (two native prairie remnants and one recently restored). We identified the AM fungi colonizing A.gerardii roots using PCR amplification and cloning of the small subunit rRNA gene. We observed 13 operational taxonomic units (OTUs) belonging to six genera in three families. Taxonomic richness was higher in the restored than the native prairies with one member of the Gigaspora dominating the roots of plants grown with inocula from native prairies. Inoculum source and the soil environment influenced the composition of AM fungi that colonized plant roots. Correspondingly, host plants and AM fungi responded significantly to the soilinoculum combinations such that home fungi often had the highest fitness and provided the greatest benefit to A.gerardii. Similar patterns were observed within the soilinoculum combinations originating from two native prairies, where five sequence types of a single Gigaspora OTU were virtually the only root colonizers. Our results indicate that indigenous assemblages of AM fungi were adapted to the local soil environment and that this process occurred both at a community scale and at the scale of fungal sequence types within a dominant OTU.
C1 [Ji, Baoming; Gehring, Catherine A.; Flores-Renteria, Lluvia; Johnson, Nancy Collins] No Arizona Univ, Dept Biol Sci, Flagstaff, AZ 86011 USA.
   [Miller, R. M.] Oklahoma State Univ, Dept Nat Resource Ecol & Management, Stillwater, OK 74078 USA.
   [Miller, R. M.] Argonne Natl Lab, Biosci Div, Argonne, IL 60439 USA.
RP Ji, BM (reprint author), Indiana Univ, Dept Biol, Bloomington, IN 47405 USA.
EM baoji@indiana.edu
RI Wilson, Gail/G-4255-2012
FU National Science Foundation [DEB-03116136, DEB 0842327, DEB 0816675];
   Fulbright Commission of the Czech Republic; U.S. Department of Energy,
   Office of Biological and Environmental Research [DE-AC02-06CH11357]
FX This work was funded by the National Science Foundation (DEB-03116136,
   DEB 0842327 and DEB 0816675) and the Fulbright Commission of the Czech
   Republic. RMM's participation was in part funded by the U.S. Department
   of Energy, Office of Biological and Environmental Research under
   contract DE-AC02-06CH11357. We thank Jacqueline Wilson for her help with
   the greenhouse study, Carlyn van Camp and Carolyn Myren for their
   assistance with the molecular analysis and Anita Antoninka for analysing
   the spore communities. Five anonymous reviewers and the laboratories of
   C. Gehring, N. Johnson and J. Bever provided valuable comments on the
   manuscript.
NR 82
TC 12
Z9 12
U1 6
U2 149
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 0962-1083
EI 1365-294X
J9 MOL ECOL
JI Mol. Ecol.
PD MAY
PY 2013
VL 22
IS 9
BP 2573
EP 2587
DI 10.1111/mec.12268
PG 15
WC Biochemistry & Molecular Biology; Ecology; Evolutionary Biology
SC Biochemistry & Molecular Biology; Environmental Sciences & Ecology;
   Evolutionary Biology
GA 133AZ
UT WOS:000318111100020
PM 23458035
ER

PT J
AU Browning, ND
AF Browning, Nigel D.
TI ELECTRON MICROSCOPY Phase transition singled out
SO NATURE CHEMISTRY
LA English
DT News Item
ID TRANSIENT STRUCTURES
C1 Pacific NW Natl Lab, Fundamental & Computat Sci Directorate, Richland, WA 99352 USA.
RP Browning, ND (reprint author), Pacific NW Natl Lab, Fundamental & Computat Sci Directorate, Richland, WA 99352 USA.
EM Nigel.Browning@pnnl.gov
OI Browning, Nigel/0000-0003-0491-251X
NR 8
TC 4
Z9 4
U1 0
U2 37
PU NATURE PUBLISHING GROUP
PI LONDON
PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND
SN 1755-4330
J9 NAT CHEM
JI Nat. Chem.
PD MAY
PY 2013
VL 5
IS 5
BP 363
EP 364
DI 10.1038/nchem.1632
PG 3
WC Chemistry, Multidisciplinary
SC Chemistry
GA 131AE
UT WOS:000317961700006
PM 23609083
ER

PT J
AU Sutton, AD
   Waldie, FD
   Wu, RL
   Schlaf, M
   Silks, LA
   Gordon, JC
AF Sutton, Andrew D.
   Waldie, Fraser D.
   Wu, Ruilian
   Schlaf, Marcel
   Silks, Louis A. 'Pete', III
   Gordon, John C.
TI The hydrodeoxygenation of bioderived furans into alkanes
SO NATURE CHEMISTRY
LA English
DT Article
ID OIL; HYDROGENOLYSIS; CATALYST; BIOMASS
AB The conversion of biomass into fuels and chemical feedstocks is one part of a drive to reduce the world's dependence on crude oil. For transportation fuels in particular, wholesale replacement of a fuel is logistically problematic, not least because of the infrastructure that is already in place. Here, we describe the catalytic defunctionalization of a series of biomass-derived molecules to provide linear alkanes suitable for use as transportation fuels. These biomass-derived molecules contain a variety of functional groups, including olefins, furan rings and carbonyl groups. We describe the removal of these in either a stepwise process or a one-pot process using common reagents and catalysts under mild reaction conditions to provide n-alkanes in good yields and with high selectivities. Our general synthetic approach is applicable to a range of precursors with different carbon content (chain length). This allows the selective generation of linear alkanes with carbon chain lengths between eight and sixteen carbons.
C1 [Sutton, Andrew D.; Gordon, John C.] Los Alamos Natl Lab, Div Chem, Los Alamos, NM 87545 USA.
   [Waldie, Fraser D.; Schlaf, Marcel] Univ Guelph, Dept Chem, Guelph, ON N1G 2W1, Canada.
   [Wu, Ruilian; Silks, Louis A. 'Pete', III] Los Alamos Natl Lab, Biosci Div, Los Alamos, NM 87545 USA.
RP Sutton, AD (reprint author), Los Alamos Natl Lab, Div Chem, MS J582, Los Alamos, NM 87545 USA.
EM adsutton@lanl.gov; jgordon@lanl.gov
RI Sutton, Andrew/D-1047-2015; 
OI Sutton, Andrew/0000-0001-7984-1715; Silks, Pete/0000-0002-2993-5630
FU Laboratory Research and Development (LDRD) program at Los Alamos
   National Laboratory
FX The authors acknowledge financial support from the Laboratory Research
   and Development (LDRD) program at Los Alamos National Laboratory.
NR 23
TC 130
Z9 136
U1 23
U2 190
PU NATURE PUBLISHING GROUP
PI LONDON
PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND
SN 1755-4330
J9 NAT CHEM
JI Nat. Chem.
PD MAY
PY 2013
VL 5
IS 5
BP 428
EP 432
DI 10.1038/nchem.1609
PG 5
WC Chemistry, Multidisciplinary
SC Chemistry
GA 131AE
UT WOS:000317961700018
PM 23609095
ER

PT J
AU Verde, I
   Abbott, AG
   Scalabrin, S
   Jung, S
   Shu, SQ
   Marroni, F
   Zhebentyayeva, T
   Dettori, MT
   Grimwood, J
   Cattonaro, F
   Zuccolo, A
   Rossini, L
   Jenkins, J
   Vendramin, E
   Meisel, LA
   Decroocq, V
   Sosinski, B
   Prochnik, S
   Mitros, T
   Policriti, A
   Cipriani, G
   Dondini, L
   Ficklin, S
   Goodstein, DM
   Xuan, PF
   Del Fabbro, C
   Aramini, V
   Copetti, D
   Gonzalez, S
   Horner, DS
   Falchi, R
   Lucas, S
   Mica, E
   Maldonado, J
   Lazzari, B
   Bielenberg, D
   Pirona, R
   Miculan, M
   Barakat, A
   Testolin, R
   Stella, A
   Tartarini, S
   Tonutti, P
   Arus, P
   Orellana, A
   Wells, C
   Main, D
   Vizzotto, G
   Silva, H
   Salamini, F
   Schmutz, J
   Morgante, M
   Rokhsar, DS
AF Verde, Ignazio
   Abbott, Albert G.
   Scalabrin, Simone
   Jung, Sook
   Shu, Shengqiang
   Marroni, Fabio
   Zhebentyayeva, Tatyana
   Dettori, Maria Teresa
   Grimwood, Jane
   Cattonaro, Federica
   Zuccolo, Andrea
   Rossini, Laura
   Jenkins, Jerry
   Vendramin, Elisa
   Meisel, Lee A.
   Decroocq, Veronique
   Sosinski, Bryon
   Prochnik, Simon
   Mitros, Therese
   Policriti, Alberto
   Cipriani, Guido
   Dondini, Luca
   Ficklin, Stephen
   Goodstein, David M.
   Xuan, Pengfei
   Del Fabbro, Cristian
   Aramini, Valeria
   Copetti, Dario
   Gonzalez, Susana
   Horner, David S.
   Falchi, Rachele
   Lucas, Susan
   Mica, Erica
   Maldonado, Jonathan
   Lazzari, Barbara
   Bielenberg, Douglas
   Pirona, Raul
   Miculan, Mara
   Barakat, Abdelali
   Testolin, Raffaele
   Stella, Alessandra
   Tartarini, Stefano
   Tonutti, Pietro
   Arus, Pere
   Orellana, Ariel
   Wells, Christina
   Main, Dorrie
   Vizzotto, Giannina
   Silva, Herman
   Salamini, Francesco
   Schmutz, Jeremy
   Morgante, Michele
   Rokhsar, Daniel S.
CA Int Peach Genome Initiative
TI The high-quality draft genome of peach (Prunus persica) identifies
   unique patterns of genetic diversity, domestication and genome evolution
SO NATURE GENETICS
LA English
DT Article
ID LINKAGE DISEQUILIBRIUM; SORBITOL TRANSPORTERS; NUCLEOTIDE DIVERSITY;
   ARABIDOPSIS-THALIANA; SEQUENCE; APPLE; PLANT; CULTIVARS; LEAVES; PHLOEM
AB Rosaceae is the most important fruit-producing clade, and its key commercially relevant genera (Fragaria, Rosa, Rubus and Prunus) show broadly diverse growth habits, fruit types and compact diploid genomes. Peach, a diploid Prunus species, is one of the best genetically characterized deciduous trees. Here we describe the high-quality genome sequence of peach obtained from a completely homozygous genotype. We obtained a complete chromosome-scale assembly using Sanger whole-genome shotgun methods. We predicted 27,852 protein-coding genes, as well as noncoding RNAs. We investigated the path of peach domestication through whole-genome resequencing of 14 Prunus accessions. The analyses suggest major genetic bottlenecks that have substantially shaped peach genome diversity. Furthermore, comparative analyses showed that peach has not undergone recent whole-genome duplication, and even though the ancestral triplicated blocks in peach are fragmentary compared to those in grape, all seven paleosets of paralogs from the putative paleoancestor are detectable.
C1 [Verde, Ignazio; Dettori, Maria Teresa; Vendramin, Elisa; Cipriani, Guido; Aramini, Valeria] Ctr Ric Frutticoltura, Consiglio Ric & Sperimentaz Agr CRA, Rome, Italy.
   [Abbott, Albert G.; Zhebentyayeva, Tatyana; Barakat, Abdelali] Clemson Univ, Dept Genet & Biochem, Clemson, SC USA.
   [Abbott, Albert G.; Decroocq, Veronique] Univ Bordeaux, INRA, UMR Biol Fruit & Pathol BFP 1332, Villenave Dornon, France.
   [Scalabrin, Simone; Marroni, Fabio; Cattonaro, Federica; Zuccolo, Andrea; Policriti, Alberto; Del Fabbro, Cristian; Copetti, Dario; Miculan, Mara; Testolin, Raffaele; Morgante, Michele] IGA, Udine, Italy.
   [Jung, Sook; Ficklin, Stephen; Main, Dorrie] Washington State Univ, Dept Hort & Landscape Architecture, Pullman, WA 99164 USA.
   [Shu, Shengqiang; Grimwood, Jane; Jenkins, Jerry; Prochnik, Simon; Goodstein, David M.; Lucas, Susan; Schmutz, Jeremy; Rokhsar, Daniel S.] US Dept Energy Joint Genome Inst, Walnut Creek, CA USA.
   [Marroni, Fabio; Cipriani, Guido; Falchi, Rachele; Testolin, Raffaele; Vizzotto, Giannina; Morgante, Michele] Univ Udine, Dipartimento Sci Agr & Ambientali, I-33100 Udine, Italy.
   [Grimwood, Jane; Jenkins, Jerry; Schmutz, Jeremy] HudsonAlpha Inst Biotechnol, Huntsville, AL USA.
   [Zuccolo, Andrea; Mica, Erica; Tonutti, Pietro] SSSA, Pisa, Italy.
   [Rossini, Laura; Lazzari, Barbara; Pirona, Raul; Stella, Alessandra; Salamini, Francesco] Parco Tecnol Padano, Lodi, Italy.
   [Rossini, Laura] Univ Milan, Dipartimento Sci Agr & Ambientali Prod, Milan, Italy.
   [Meisel, Lee A.] Univ Chile, INTA, Santiago, Chile.
   [Meisel, Lee A.] Univ Andres Bello, Fac Ciencias Biol, Ctr Biotecnol Vegetal, Santiago, Chile.
   [Sosinski, Bryon] N Carolina State Univ, Dept Hort Sci, Raleigh, NC 27695 USA.
   [Mitros, Therese] Univ Calif Berkeley, Energy Biosci Inst, Berkeley, CA 94720 USA.
   [Policriti, Alberto] Univ Udine, Dipartimento Matemat & Informat, I-33100 Udine, Italy.
   [Dondini, Luca; Tartarini, Stefano] Univ Bologna, Dept Fruit Tree & Woody Plant Sci, Bologna, Italy.
   [Xuan, Pengfei] Clemson Univ, Sch Comp, Clemson, SC USA.
   [Gonzalez, Susana; Orellana, Ariel] Univ Andres Bello, Fondo Invest Avanzada Areas Prioritarias FONDAP, Ctr Genome Regulat, Ctr Biotecnol Vegetal,Fac Ciencias Biol, Santiago, Chile.
   [Horner, David S.] Univ Milan, Dipartimento Sci Biomol & Biotecnol, Milan, Italy.
   [Maldonado, Jonathan; Silva, Herman] Univ Chile, Fac Ciencias Agron, Lab Genom Func & Bioinformat, La Pintana, Chile.
   [Bielenberg, Douglas; Wells, Christina] Clemson Univ, Sch Agr Forest & Environm Sci, Clemson, SC USA.
   [Stella, Alessandra] CNR, Ist Biol & Biotecnol Agr, Lodi, Italy.
   [Arus, Pere] Univ Barcelona, Univ Autonoma Barcelona, IRTA, Ctr Recerca Agrigenom,CSIC,IRTA, Barcelona, Spain.
   [Salamini, Francesco] Fdn Edmund Mach, IASMA, Res & Innovat Ctr, San Michele All Adige, Trento, Italy.
   [Rokhsar, Daniel S.] Univ Calif Berkeley, Ctr Integrat Genom, Berkeley, CA 94720 USA.
RP Verde, I (reprint author), Ctr Ric Frutticoltura, Consiglio Ric & Sperimentaz Agr CRA, Rome, Italy.
EM ignazio.verde@entecra.it; aalbert@clemson.edu;
   michele.morgante@uniud.it; dsrokhsar@gmail.com
RI Maldonado, Jonathan/J-6429-2012; Pirona, Raul/L-3201-2013; Orellana,
   Ariel/E-2166-2014; Decroocq, Veronique/M-1059-2016; Silva,
   Herman/C-7252-2012; Schmutz, Jeremy/N-3173-2013; Meisel,
   Lee/J-6755-2012; Del Fabbro, Cristian/C-5523-2014; Bielenberg,
   Douglas/G-3893-2010; Arus, Pere/F-6443-2015; Rossini, Laura/J-7873-2012;
   DONDINI, LUCA/N-8797-2015
OI Verde, Ignazio/0000-0002-9139-955X; Vendramin,
   Elisa/0000-0002-7324-7237; Dettori, Maria Teresa/0000-0003-0528-2855;
   VIZZOTTO, Giannina/0000-0002-9147-7570; Marroni,
   Fabio/0000-0002-1556-5907; TARTARINI, STEFANO/0000-0002-3920-5658;
   Maldonado, Jonathan/0000-0002-9967-0885; Pirona,
   Raul/0000-0002-1817-344X; Orellana, Ariel/0000-0002-9243-808X; Decroocq,
   Veronique/0000-0001-6745-6350; Silva, Herman/0000-0003-1007-7442;
   Ficklin, Stephen/0000-0001-9138-6292; Schmutz,
   Jeremy/0000-0001-8062-9172; Meisel, Lee/0000-0002-4806-6864; Del Fabbro,
   Cristian/0000-0001-8189-6192; Bielenberg, Douglas/0000-0002-4853-2984;
   Arus, Pere/0000-0003-0939-8038; Rossini, Laura/0000-0001-6509-9177;
   DONDINI, LUCA/0000-0002-3547-9731
FU Office of Science of the US Department of Energy [DE-AC02-05CH11231];
   Ministero delle Politiche Agricole Alimentari e Forestali-Italy (MiPAAF)
   [DM14999/7303/08]; US Department of Agriculture (USDA) through USDA
   National Institute of Food and Agriculture (NIFA) Specialty Crop
   Research Initiative (SCRI) [2010-2010-03255]; Robert and Louis Coker
   Chair for Plant Molecular Genetics; Chilean government [FDI G02P1001];
   Basal ProgramPB-16; FONDAP [CRG15090007]; Spanish Ministry of Science
   and Innovation [CSD2007-00036]; French National Research Agency (ANR)
   through Chex-ABRIWG ANR/INRA [22000552]
FX This work was jointly supported by the Office of Science of the US
   Department of Energy under contract number DE-AC02-05CH11231 and the
   Ministero delle Politiche Agricole Alimentari e Forestali-Italy (MiPAAF,
   http://www.politicheagricole.it) through the project 'DRUPOMICS' (grant
   DM14999/7303/08). We would also like to thank the US Department of
   Agriculture (USDA) for their support of the peach genomics program
   through USDA National Institute of Food and Agriculture (NIFA) Specialty
   Crop Research Initiative (SCRI) grant 2010-2010-03255, the Robert and
   Louis Coker Chair for Plant Molecular Genetics for their grant to
   Clemson University, the Chilean government for supporting this work
   through FDI G02P1001 (Chilean Genome Initiative), Basal ProgramPB-16 and
   FONDAP CRG15090007, the Consolider-Ingenio 2010 Program (CSD2007-00036)
   from the Spanish Ministry of Science and Innovation, the French National
   Research Agency (ANR) for supporting this work through Chex-ABRIWG
   ANR/INRA 22000552, G. Reighard (Clemson University) for providing the
   leaf material of the Lovell double haploid, R. Quarta (Centro di Ricerca
   per la Frutticoltura di Roma (CRA-FRU)) and C. Pozzi (Fondazione Edmund
   Mach (FEM) S. Michele all'Adige) for their efforts in the drafting of
   the DRUPOMICS proposal, T. Pascal (Institut National de la Recherche
   Agronomique (INRA) Avignon) for providing leaf material for the
   resequencing, T. Candresse (INRA Bordeaux) for his critical reading of
   the manuscript, M. Troggio (FEM S. Michele all'Adige) for her help with
   the data analysis and G. Zhongshan (Zhejiang University) for the
   information provided about the Chinese peach accessions.
NR 66
TC 279
Z9 293
U1 19
U2 210
PU NATURE PUBLISHING GROUP
PI NEW YORK
PA 75 VARICK ST, 9TH FLR, NEW YORK, NY 10013-1917 USA
SN 1061-4036
J9 NAT GENET
JI Nature Genet.
PD MAY
PY 2013
VL 45
IS 5
BP 487
EP U47
DI 10.1038/ng.2586
PG 10
WC Genetics & Heredity
SC Genetics & Heredity
GA 133RU
UT WOS:000318158200009
ER

PT J
AU Torchinsky, DH
   Mahmood, F
   Bollinger, AT
   Bozovic, I
   Gedik, N
AF Torchinsky, Darius H.
   Mahmood, Fahad
   Bollinger, Anthony T.
   Bozovic, Ivan
   Gedik, Nuh
TI Fluctuating charge-density waves in a cuprate superconductor
SO NATURE MATERIALS
LA English
DT Article
ID HIGH-TEMPERATURE SUPERCONDUCTOR; ANTIFERROMAGNETIC ORDER;
   MAGNETIC-FIELD; DYNAMICS; PHASE; STRIPES; TIME; LA2-XBAXCUO4;
   SPECTROSCOPY; K0.3MOO3
AB Cuprate materials hosting high-temperature superconductivity (HTS) also exhibit various forms of charge and spin ordering(1-6) whose significance is not fully understood(7). So far, static charge-density waves(8) (CDWs) have been detected by diffraction probes only at particular doping levels(9-11) or in an applied external field(12). However, dynamic CDWs may also be present more broadly and their detection, characterization and relationship with HTS remain open problems. Here we present a method based on ultrafast spectroscopy to detect the presence and measure the lifetimes of CDW fluctuations in cuprates. In an underdoped La1.9Sr0.1CuO4 film (T-c = 26 K), we observe collective excitations of CDW that persist up to 100 K. This dynamic CDW fluctuates with a characteristic lifetime of 2 ps at T = 5 K that decreases to 0.5 ps at T = 100 K. In contrast, in an optimally doped La1.84Sr0.16CuO4 film (T-c = 38.5 K), we detect no signatures of fluctuating CDWs at any temperature, favouring the competition scenario. This work forges a path for studying fluctuating order parameters in various superconductors and other materials.
C1 [Torchinsky, Darius H.; Mahmood, Fahad; Gedik, Nuh] MIT, Dept Phys, Cambridge, MA 02139 USA.
   [Bollinger, Anthony T.; Bozovic, Ivan] Brookhaven Natl Lab, Upton, NY 11973 USA.
RP Gedik, N (reprint author), MIT, Dept Phys, Cambridge, MA 02139 USA.
EM gedik@mit.edu
OI Torchinsky, Darius/0000-0001-6497-2237
FU NSF [DMR-0845296]; US Department of Energy, Basic Energy Sciences,
   Materials Sciences and Engineering Division
FX The authors would like to thank S. Todadri, P. Lee and S. Kivelson for
   useful discussions. D.H.T., F.M. and N.G. were supported by NSF Career
   Award DMR-0845296. I.B. and A.T.B. were supported by the US Department
   of Energy, Basic Energy Sciences, Materials Sciences and Engineering
   Division.
NR 40
TC 60
Z9 60
U1 8
U2 151
PU NATURE PUBLISHING GROUP
PI LONDON
PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND
SN 1476-1122
EI 1476-4660
J9 NAT MATER
JI Nat. Mater.
PD MAY
PY 2013
VL 12
IS 5
BP 387
EP 391
DI 10.1038/NMAT3571
PG 5
WC Chemistry, Physical; Materials Science, Multidisciplinary; Physics,
   Applied; Physics, Condensed Matter
SC Chemistry; Materials Science; Physics
GA 130XY
UT WOS:000317954800006
PM 23435216
ER

PT J
AU Yin, YW
   Burton, JD
   Kim, YM
   Borisevich, AY
   Pennycook, SJ
   Yang, SM
   Noh, TW
   Gruverman, A
   Li, XG
   Tsymbal, EY
   Li, Q
AF Yin, Y. W.
   Burton, J. D.
   Kim, Y-M.
   Borisevich, A. Y.
   Pennycook, S. J.
   Yang, S. M.
   Noh, T. W.
   Gruverman, A.
   Li, X. G.
   Tsymbal, E. Y.
   Li, Qi
TI Enhanced tunnelling electroresistance effect due to a ferroelectrically
   induced phase transition at a magnetic complex oxide interface
SO NATURE MATERIALS
LA English
DT Article
ID SPIN POLARIZATION; JUNCTIONS; STATES; HETEROSTRUCTURES; BARRIERS;
   PHYSICS
AB The range of recently discovered phenomena in complex oxide heterostructures, made possible owing to advances in fabrication techniques, promise new functionalities and device concepts(1-3). One issue that has received attention is the bistable electrical modulation of conductivity in ferroelectric tunnel junctions(4-6) (FTJs) in response to a ferroelectric polarization of the tunnelling barrier, a phenomenon known as the tunnelling electroresistance (TER) effect(7-10). Ferroelectric tunnel junctions with ferromagnetic electrodes allow ferroelectric control of the tunnelling spin polarization through the magnetoelectric coupling at the ferromagnet/ferroelectric interface(11-17). Here we demonstrate a significant enhancement of TER due to a ferroelectrically induced phase transition at a magnetic complex oxide interface. Ferroelectric tunnel junctions consisting of BaTiO3 tunnelling barriers and La0.7Sr0.3MnO3 electrodes exhibit a TER enhanced by up to similar to 10,000% by a nanometre-thick La0.5Ca0.5MnO3 interlayer inserted at one of the interfaces. The observed phenomenon originates from the metal-to-insulator phase transition in La0.5Ca0.5MnO3, driven by the modulation of carrier density through ferroelectric polarization switching. Electrical, ferroelectric and magnetoresistive measurements combined with first-principles calculations provide evidence for a magnetoelectric origin of the enhanced TER, and indicate the presence of defect-mediated conduction in the FTJs. The effect is robust and may serve as a viable route for electronic and spintronic applications.
C1 [Yin, Y. W.; Li, Qi] Penn State Univ, Dept Phys, University Pk, PA 16802 USA.
   [Yin, Y. W.; Li, X. G.] Univ Sci & Technol China, Hefei Natl Lab Phys Sci Microscale, Dept Phys, Hefei 230026, Peoples R China.
   [Burton, J. D.; Gruverman, A.; Tsymbal, E. Y.] Univ Nebraska, Dept Phys & Astron, Lincoln, NE 68588 USA.
   [Burton, J. D.; Gruverman, A.; Tsymbal, E. Y.] Univ Nebraska, Nebraska Ctr Mat & Nanosci, Lincoln, NE 68588 USA.
   [Kim, Y-M.; Borisevich, A. Y.; Pennycook, S. J.] Oak Ridge Natl Lab, Mat Sci & Technol Div, Oak Ridge, TN 37831 USA.
   [Kim, Y-M.] Korea Basic Sci Inst, Taejon 305806, South Korea.
   [Yang, S. M.; Noh, T. W.] Seoul Natl Univ, IBS Ctr Funct Interfaces Correlated Electron Syst, Dept Phys & Astron, Seoul 151747, South Korea.
RP Tsymbal, EY (reprint author), Univ Nebraska, Dept Phys & Astron, Lincoln, NE 68588 USA.
EM tsymbal@unl.edu; qil1@psu.edu
RI Kim, Young-Min/B-7338-2012; Tsymbal, Evgeny/G-3493-2013; Borisevich,
   Albina/B-1624-2009; Noh, Tae Won /K-9405-2013; Li,
   Xiao-Guang/J-9469-2014; Gruverman, alexei/P-3537-2014; Yang, Sang
   Mo/Q-2455-2015; Burton, John/B-5875-2008; Yin, Yuewei/A-2966-2013
OI Kim, Young-Min/0000-0003-3220-9004; Borisevich,
   Albina/0000-0002-3953-8460; Gruverman, alexei/0000-0003-0492-2750; Yang,
   Sang Mo/0000-0003-1809-2938; Burton, John/0000-0001-5535-2407; Yin,
   Yuewei/0000-0003-0965-4951
FU DOE [DE-FG02-08ER4653]; NSF [DMR-1207474]; PSU NSF MRSEC seed grant;
   NSFC; NSF MRSEC [DMR-0820521]; NSF EPSCoR [EPS-1010674]; Materials
   Science and Engineering Division of the US DOE;  [NBRP-2012CB922003]
FX The work at Pennsylvania State University (PSU) was supported in part by
   the DOE (Grant No. DE-FG02-08ER4653) and the NSF (Grant No.
   DMR-1207474). The PSU NSF MRSEC seed grant and NNIN Nanofabrication
   facilities are acknowledged. The work at USTC was supported by
   NBRP-2012CB922003 and NSFC. The work at the University of
   Nebraska-Lincoln (UNL) was supported by NSF MRSEC (Grant No.
   DMR-0820521) and NSF EPSCoR (Grant No. EPS-1010674). Computations were
   performed at the UNL Holland Computing Center. The work at ORNL was
   supported by the Materials Science and Engineering Division of the US
   DOE.
NR 32
TC 124
Z9 124
U1 28
U2 388
PU NATURE PUBLISHING GROUP
PI LONDON
PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND
SN 1476-1122
EI 1476-4660
J9 NAT MATER
JI Nat. Mater.
PD MAY
PY 2013
VL 12
IS 5
BP 397
EP 402
DI 10.1038/NMAT3564
PG 6
WC Chemistry, Physical; Materials Science, Multidisciplinary; Physics,
   Applied; Physics, Condensed Matter
SC Chemistry; Materials Science; Physics
GA 130XY
UT WOS:000317954800008
PM 23416728
ER

PT J
AU Heiss, M
   Fontana, Y
   Gustafsson, A
   Wust, G
   Magen, C
   O'Regan, DD
   Luo, JW
   Ketterer, B
   Conesa-Boj, S
   Kuhlmann, AV
   Houel, J
   Russo-Averchi, E
   Morante, JR
   Cantoni, M
   Marzari, N
   Arbiol, J
   Zunger, A
   Warburton, RJ
   Morral, AFI
AF Heiss, M.
   Fontana, Y.
   Gustafsson, A.
   Wuest, G.
   Magen, C.
   O'Regan, D. D.
   Luo, J. W.
   Ketterer, B.
   Conesa-Boj, S.
   Kuhlmann, A. V.
   Houel, J.
   Russo-Averchi, E.
   Morante, J. R.
   Cantoni, M.
   Marzari, N.
   Arbiol, J.
   Zunger, A.
   Warburton, R. J.
   Fontcuberta i Morral, A.
TI Self-assembled quantum dots in a nanowire system for quantum photonics
SO NATURE MATERIALS
LA English
DT Article
ID GAAS NANOWIRES; HETEROSTRUCTURES; NANOSTRUCTURES; EPITAXY; FACETS;
   ARRAYS
AB Quantum dots embedded within nanowires represent one of the most promising technologies for applications in quantum photonics. Whereas the top-down fabrication of such structures remains a technological challenge, their bottom-up fabrication through self-assembly is a potentially more powerful strategy. However, present approaches often yield quantum dots with large optical linewidths, making reproducibility of their physical properties difficult. We present a versatile quantum-dot-innanowire system that reproducibly self-assembles in core-shell GaAs/AlGaAs nanowires. The quantum dots form at the apex of a GaAs/AlGaAs interface, are highly stable, and can be positioned with nanometre precision relative to the nanowire centre. Unusually, their emission is blue-shifted relative to the lowest energy continuum states of the GaAs core. Large-scale electronic structure calculations show that the origin of the optical transitions lies in quantum confinement due to Al-rich barriers. By emitting in the red and self-assembling on silicon substrates, these quantum dots could therefore become building blocks for solid-state lighting devices and third-generation solar cells.
C1 [Heiss, M.; Fontana, Y.; Ketterer, B.; Conesa-Boj, S.; Russo-Averchi, E.; Fontcuberta i Morral, A.] Ecole Polytech Fed Lausanne, Lab Mat Semicond, CH-1015 Lausanne, Switzerland.
   [Gustafsson, A.] Lund Univ, Nanometer Consortium, S-22100 Lund, Sweden.
   [Wuest, G.; Kuhlmann, A. V.; Houel, J.; Warburton, R. J.] Univ Basel, Dept Phys, CH-4056 Basel, Switzerland.
   [Magen, C.] Univ Zaragoza, Inst Nanociencia Aragon ARAID, Zaragoza 50018, Spain.
   [Magen, C.] Univ Zaragoza, Dept Fis Mat Condensada, Zaragoza 50018, Spain.
   [O'Regan, D. D.; Marzari, N.] Ecole Polytech Fed Lausanne, Theory & Simulat Mat THEOS, CH-1015 Lausanne, Switzerland.
   [Luo, J. W.] Natl Renewable Energy Lab, Golden, CO 80401 USA.
   [Morante, J. R.] IREC, Catalonia Inst Energy Res, St Adria Del Besos 08930, Spain.
   [Morante, J. R.] Univ Barcelona, Dept Elect, E-08028 Barcelona, Spain.
   [Cantoni, M.] Ecole Polytech Fed Lausanne, Interdisciplinary Ctr Electron Microscopy, CH-1015 Lausanne, Switzerland.
   [Arbiol, J.] ICMAB CSIC, ICREA, E-08193 Bellaterra, Cat, Spain.
   [Arbiol, J.] ICMAB CSIC, Inst Ciencia Mat Barcelona, E-08193 Bellaterra, Cat, Spain.
   [Zunger, A.] Univ Colorado, Boulder, CO 80309 USA.
RP Morral, AFI (reprint author), Ecole Polytech Fed Lausanne, Lab Mat Semicond, CH-1015 Lausanne, Switzerland.
EM anna.fontcuberta-morral@epfl.ch
RI Arbiol, Jordi/B-6048-2008; Magen, Cesar/A-2825-2013; Morante,
   J.R./A-4480-2014; Fontcuberta i Morral, Anna/B-9884-2008; Houel,
   Julien/E-6903-2014; O'Regan, David/O-5047-2014; Gustafsson,
   Anders/C-7312-2008; LUO, JUNWEI/B-6545-2013; Marzari, Nicola/D-6681-2016
OI Arbiol, Jordi/0000-0002-0695-1726; Morante, J.R./0000-0002-4981-4633;
   O'Regan, David/0000-0002-7802-0322; Gustafsson,
   Anders/0000-0001-9289-5961; Marzari, Nicola/0000-0002-9764-0199
FU SNF [134506]; NCCR; QSIT; Spanish MICINN Projects [MAT2010-15138,
   CSD2009-00013, CSD2009-00050]; NanoAraCat; XaRMAE; European RDF; US
   Department of Energy, Office of Science, Basic Energy Science, Materials
   Sciences and Engineering [DE-AC36-08GO28308]; ERC; UpCon grant
FX A.F.i.M. acknowledges funding from ERC through the UpCon grant and SNF
   through Grant No. 134506. Both A.F.i.M. and R.J.W. acknowledge support
   from NCCR QSIT. The Phantoms Foundation is acknowledged for sponsoring
   B. K.'s visit to Lund University. This work was supported by the Spanish
   MICINN Projects MAT2010-15138, CSD2009-00013 and CSD2009-00050. J.A. and
   J.R.M. acknowledge Generalitat de Catalunya 2009-SGR-770, NanoAraCat and
   XaRMAE and European RDF support. The authors acknowledge F. J. Belarre
   for the making of the TEM cross-sections; A. G. thanks L. Samuelson and
   the Swedish Research Council for support. D.D.O. acknowledges N. D. M.
   Hine and the ONETEP developers' group for discussions and software
   support, and the EPFL HPC service for generous provision of computing
   resources. The work carried out by J. W. L. and A.Z. was funded by the
   US Department of Energy, Office of Science, Basic Energy Science,
   Materials Sciences and Engineering under contract number
   DE-AC36-08GO28308 to NREL and CU Boulder.
NR 41
TC 139
Z9 139
U1 23
U2 417
PU NATURE PUBLISHING GROUP
PI LONDON
PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND
SN 1476-1122
EI 1476-4660
J9 NAT MATER
JI Nat. Mater.
PD MAY
PY 2013
VL 12
IS 5
BP 439
EP 444
DI 10.1038/NMAT3557
PG 6
WC Chemistry, Physical; Materials Science, Multidisciplinary; Physics,
   Applied; Physics, Condensed Matter
SC Chemistry; Materials Science; Physics
GA 130XY
UT WOS:000317954800015
PM 23377293
ER

PT J
AU Eisaman, M
AF Eisaman, Matthew
TI QUANTUM NONLINEAR OPTICS Tailored single photons
SO NATURE PHOTONICS
LA English
DT News Item
ID COMMUNICATION
C1 Brookhaven Natl Lab, Sustainable Energy Technol Dept, Upton, NY 11973 USA.
RP Eisaman, M (reprint author), Brookhaven Natl Lab, Sustainable Energy Technol Dept, Bldg 734, Upton, NY 11973 USA.
EM meisaman@bnl.gov
RI Eisaman, Matthew/E-8006-2011
OI Eisaman, Matthew/0000-0002-3814-6430
NR 7
TC 0
Z9 0
U1 0
U2 29
PU NATURE PUBLISHING GROUP
PI LONDON
PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND
SN 1749-4885
J9 NAT PHOTONICS
JI Nat. Photonics
PD MAY
PY 2013
VL 7
IS 5
BP 345
EP 346
DI 10.1038/nphoton.2013.96
PG 2
WC Optics; Physics, Applied
SC Optics; Physics
GA 133SR
UT WOS:000318160700003
ER

PT J
AU Aidhy, D
   Wolf, D
AF Aidhy, Dilpuneet
   Wolf, Dieter
TI ON THE RESPONSE OF IONIC CRYSTALS TO IRRADIATION
SO NUCLEAR TECHNOLOGY
LA English
DT Article; Proceedings Paper
CT Symposium on Radiation Effects in Ceramic Oxide and Novel LWR Fuels held
   during the Meeting of the Minerals-Metals-and-Materials-Society (TMS)
CY MAR, 2012
CL Orlando, FL
SP Minerals Met & Mat Soc (TMS), Idaho Natl Lab (INL), Ctr Mat Sci Nucl Fuel, TMS Nucl Mat Comm
DE point-defect clustering; UO2 and CeO2; radiation damage
ID MOLECULAR-DYNAMICS; SELF-ORGANIZATION; RADIATION-DAMAGE; SIMULATION;
   CLUSTERS; SYSTEMS; METALS; CEO2
AB We use molecular dynamics simulations to study the irradiation-induced point-defect clustering kinetics in CeO2 as a surrogate for UO2, the most widely used nuclear fuel. Remarkably, the cluster-formation mechanism involves a partial self-healing response of the perfect crystal to the radiation-induced defects, by spontaneous creation of new point defects with negative formation energy. These "structural" defects neutralize the cluster by screening its long-range Coulomb potential, thereby localizing the damage. The observation of a similar lattice response in MgO and UO2, in spite of very different types of clusters involved, suggests that this partial self-healing screening behavior may be intrinsic to all ionic crystals.
C1 [Aidhy, Dilpuneet; Wolf, Dieter] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA.
RP Aidhy, D (reprint author), Oak Ridge Natl Lab, Mat Sci & Technol Div, Oak Ridge, TN 37831 USA.
EM aidhyds@ornl.gov
NR 29
TC 2
Z9 2
U1 1
U2 14
PU AMER NUCLEAR SOC
PI LA GRANGE PK
PA 555 N KENSINGTON AVE, LA GRANGE PK, IL 60526 USA
SN 0029-5450
J9 NUCL TECHNOL
JI Nucl. Technol.
PD MAY
PY 2013
VL 182
IS 2
BP 138
EP 144
PG 7
WC Nuclear Science & Technology
SC Nuclear Science & Technology
GA 134ZG
UT WOS:000318255100003
ER

PT J
AU Rudman, K
   Dickerson, P
   Byler, D
   McDonald, R
   Lim, H
   Peralta, P
   Stanek, C
   McClellan, K
AF Rudman, Karin
   Dickerson, Patricia
   Byler, Darrin
   McDonald, Robert
   Lim, Harn
   Peralta, Pedro
   Stanek, Chris
   McClellan, Kenneth
TI THREE-DIMENSIONAL CHARACTERIZATION OF SINTERED UO2+x: EFFECTS OF OXYGEN
   CONTENT ON MICROSTRUCTURE AND ITS EVOLUTION
SO NUCLEAR TECHNOLOGY
LA English
DT Article; Proceedings Paper
CT Symposium on Radiation Effects in Ceramic Oxide and Novel LWR Fuels held
   during the Meeting of the Minerals-Metals-and-Materials-Society (TMS)
CY MAR, 2012
CL Orlando, FL
SP Minerals, Met & Mat Soc, Idaho Natl Lab (INL), Ctr Mat Sci Nucl Fuel, TMS Nucl Mat Comm
DE microstructure evolution; oxygen stoichiometry; oxide fuels
ID URANIUM-DIOXIDE; FUEL; BEHAVIOR; DENSIFICATION; ATMOSPHERES
AB The oxygen content during the intermediate and final stages of sintering can have a strong effect on the microstructural evolution of oxide fuels. Two depleted urania (d-UO2.0 and d-UO2.14) samples, sintered up to a theoretical density of 90%, were serial sectioned using a focused ion beam and characterized with electron back-scatter diffraction (EBSD). The EBSD data were used to make three-dimensional reconstructions of the microstructures to evaluate their characteristics at an intermediate stage of sintering. The oxygen content was found to affect grain shape and grain boundary (GB) mobility, as curved and elongated grains were observed in UO2.0, as well as stronger pore-GB interactions, which is an indication that microstructure was less evolved in UO2.0. Both samples presented a similar fraction (approximate to 20%) of special, coincident site lattice boundaries, with larger amounts of Sigma 3(n) GBs, and a rather large fraction of Sigma 11 GBs for UO2.14. Crystallographic GB planes were also determined to study the distributions of all GB parameters. The UO2.0 sample had a large fraction of GB planes close to the Sigma 3 twinning planes, which suggests that lower-energy interfaces are used to minimize energy in this sample, potentially due to lower overall GB mobility as compared to UO2.14.
C1 [Rudman, Karin; McDonald, Robert; Lim, Harn; Peralta, Pedro] Arizona State Univ, Sch Engn Matter Transport & Energy, Tempe, AZ 85287 USA.
   [Dickerson, Patricia; Byler, Darrin; Stanek, Chris; McClellan, Kenneth] Los Alamos Natl Lab, Los Alamos, NM USA.
RP Rudman, K (reprint author), Arizona State Univ, Sch Engn Matter Transport & Energy, Tempe, AZ 85287 USA.
EM krudman@asu.edu
NR 20
TC 4
Z9 4
U1 2
U2 28
PU AMER NUCLEAR SOC
PI LA GRANGE PK
PA 555 N KENSINGTON AVE, LA GRANGE PK, IL 60526 USA
SN 0029-5450
EI 1943-7471
J9 NUCL TECHNOL
JI Nucl. Technol.
PD MAY
PY 2013
VL 182
IS 2
BP 145
EP 154
PG 10
WC Nuclear Science & Technology
SC Nuclear Science & Technology
GA 134ZG
UT WOS:000318255100004
ER

PT J
AU Lim, HC
   Rudman, K
   Krishnan, K
   McDonald, R
   Dickerson, P
   Byler, D
   Peralta, P
   Stanek, C
   McClellan, K
AF Lim, Harn Chyi
   Rudman, Karin
   Krishnan, Kapil
   McDonald, Robert
   Dickerson, Patricia
   Byler, Darrin
   Peralta, Pedro
   Stanek, Chris
   McClellan, Kenneth
TI MICROSTRUCTURALLY EXPLICIT SIMULATION OF INTERGRANULAR MASS TRANSPORT IN
   OXIDE NUCLEAR FUELS
SO NUCLEAR TECHNOLOGY
LA English
DT Article; Proceedings Paper
CT Symposium on Radiation Effects in Ceramic Oxide and Novel LWR Fuels held
   during the Meeting of the Minerals-Metals-and-Materials-Society (TMS)
CY MAR, 2012
CL Orlando, FL
SP Minerals, Met & Mat Soc, Idaho Natl Lab (INL), Ctr Mat Sci Nucl Fuel, TMS Nucl Mat Comm
DE microstructure; fission product transport; multi-physics simulation
ID GRAIN-BOUNDARY DIFFUSION; FISSION-GAS RELEASE; TRIPLE JUNCTIONS;
   URANIUM-DIOXIDE; PERCOLATION; ANISOTROPY; NETWORKS; LATTICE; OXYGEN
AB Transport of fission products (FPs) inside fuel pellets is an important mechanism that affects microstructure evolution as well as fuel performance. To study this phenomenon for low fuel burnups, when solid-state diffusion is likely to be the controlling mechanism that sets the stage for subsequent phenomena, e.g., fission gas bubble formation and linkage, we created a three-dimensional (3-D) finite element model based on the real microstructure of a depleted UO2 sample. The model couples grain bulk, grain boundary (GB), and triple junction (TJ) diffusion by using 3-D elements for grain bulks, two-dimensional elements for GBs, and one-dimensional elements for TJs. Grain boundary percolation theory is applied in one case study, and the result shows that the presence of high-diffusivity TJs reduces the effect of GB percolation. The model is also used with mass generation from grain bulks, and it is found that localized regions with a high concentration of FPs can form in the presence of a dominant GB percolation path. The work introduces an approach to model diffusion through GBs and TJs at a fair computational cost that can be applied to study the effects of microstructure on FP transport.
C1 [Lim, Harn Chyi; Rudman, Karin; Krishnan, Kapil; McDonald, Robert; Peralta, Pedro] Arizona State Univ, Sch Engn Matter Transport & Energy, Tempe, AZ 85287 USA.
   [Dickerson, Patricia; Byler, Darrin; Stanek, Chris; McClellan, Kenneth] Los Alamos Natl Lab, Mat Sci & Technol Div, Los Alamos, NM 87545 USA.
RP Lim, HC (reprint author), Arizona State Univ, Sch Engn Matter Transport & Energy, Tempe, AZ 85287 USA.
EM pperalta@asu.edu
NR 24
TC 1
Z9 1
U1 0
U2 10
PU AMER NUCLEAR SOC
PI LA GRANGE PK
PA 555 N KENSINGTON AVE, LA GRANGE PK, IL 60526 USA
SN 0029-5450
EI 1943-7471
J9 NUCL TECHNOL
JI Nucl. Technol.
PD MAY
PY 2013
VL 182
IS 2
BP 155
EP 163
PG 9
WC Nuclear Science & Technology
SC Nuclear Science & Technology
GA 134ZG
UT WOS:000318255100005
ER

PT J
AU He, LF
   Yablinsky, C
   Gupta, M
   Gan, J
   Kirk, MA
   Allen, TR
AF He, Lingfeng
   Yablinsky, Clarissa
   Gupta, Mahima
   Gan, Jian
   Kirk, Marquis A.
   Allen, Todd R.
TI TRANSMISSION ELECTRON MICROSCOPY INVESTIGATION OF KRYPTON BUBBLES IN
   POLYCRYSTALLINE CeO2
SO NUCLEAR TECHNOLOGY
LA English
DT Article; Proceedings Paper
CT Symposium on Radiation Effects in Ceramic Oxide and Novel LWR Fuels held
   during the Meeting of the Minerals-Metals-and-Materials-Society (TMS)
CY MAR, 2012
CL Orlando, FL
SP Minerals, Met & Mat Soc, Idaho Natl Lab (INL), Ctr Mat Sci Nucl Fuel, TMS Nucl Mat Comm
DE CeO2 nuclear fuel; transmission electron microscopy
ID GRAIN-BOUNDARIES; RADIATION-DAMAGE; NUCLEAR-FUELS; UO2 FUEL;
   TEMPERATURE; PRECIPITATION; TOLERANCE; KINETICS; DEFECTS; TEM
AB To gain an understanding of gas bubble transport in oxide nuclear fuel, this paper uses polycrystalline CeO2, composed of both nano grains and micro grains, as a surrogate material for UO2. The CeO2 was implanted with 150-keV Kr ions up to a dose of 1 X 10(16) ions/cm(2) at 600 degrees C. Transmission electron microscopy characterizations of small Kr bubbles in nano grain and micro grain regions were compared. The grain boundary acted as an efficient defect sink, as evidenced by smaller bubbles and a lower bubble density in the nano grain region as compared to the micro grain region.
C1 [He, Lingfeng; Yablinsky, Clarissa; Gupta, Mahima; Allen, Todd R.] Univ Wisconsin, Dept Engn Phys, Madison, WI 53706 USA.
   [Gan, Jian] Idaho Natl Lab, Idaho Falls, ID 83415 USA.
   [Kirk, Marquis A.] Argonne Natl Lab, Argonne, IL 60439 USA.
RP He, LF (reprint author), Univ Wisconsin, Dept Engn Phys, Madison, WI 53706 USA.
EM lhe33@wisc.edu
RI He, Lingfeng/D-3534-2014; 
OI He, Lingfeng/0000-0003-2763-1462; Allen, Todd/0000-0002-2372-7259;
   Yablinsky, Clarissa/0000-0001-6162-0949
NR 26
TC 2
Z9 2
U1 0
U2 11
PU AMER NUCLEAR SOC
PI LA GRANGE PK
PA 555 N KENSINGTON AVE, LA GRANGE PK, IL 60526 USA
SN 0029-5450
EI 1943-7471
J9 NUCL TECHNOL
JI Nucl. Technol.
PD MAY
PY 2013
VL 182
IS 2
BP 164
EP 169
PG 6
WC Nuclear Science & Technology
SC Nuclear Science & Technology
GA 134ZG
UT WOS:000318255100006
ER

PT J
AU Warren, JM
   Bilheux, H
   Kang, MS
   Voisin, S
   Cheng, CL
   Horita, J
   Perfect, E
AF Warren, Jeffrey M.
   Bilheux, Hassina
   Kang, Misun
   Voisin, Sophie
   Cheng, Chu-Lin
   Horita, Juske
   Perfect, Edmund
TI Neutron imaging reveals internal plant water dynamics
SO PLANT AND SOIL
LA English
DT Article
DE Computed tomography; Hydraulic redistribution; Maize; Radiography; Root
   water uptake; Water transport
ID ROOT-GROWTH; SOIL-WATER; XYLEM EMBOLISM; BEAM ANALYSIS; RADIOGRAPHY;
   RHIZOSPHERE; FLOW; VISUALIZATION; CONDUCTANCE; TOMOGRAPHY
AB Knowledge of plant water fluxes is critical for assessing mechanistic processes linked to biogeochemical cycles, yet resolving root water transport dynamics has been a particularly daunting task. Our objectives were to demonstrate the ability to non-invasively monitor individual root functionality and water fluxes within Zea mays L. (maize) and Panicum virgatum L. (switchgrass) seedlings using neutron imaging.
   Seedlings were propagated for 1-3 weeks in aluminum chambers containing sand. Pulses of water or deuterium oxide were then tracked through the root systems by collecting consecutive radiographs during exposure to a cold-neutron source. Water flux was manipulated by cycling on a growth lamp to alter foliar demand for water.
   Neutron radiography readily illuminated root structure, root growth, and relative plant and soil water content. After irrigation there was rapid root water uptake from the newly wetted soil, followed by hydraulic redistribution of water through the root system to roots terminating in dry soil. Water flux within individual roots responded differentially to foliar illumination based on supply and demand of water within the root system.
   Sub-millimeter scale image resolution revealed timing and magnitudes of root water uptake, redistribution within the roots, and root-shoot hydraulic linkages-relationships not well characterized by other techniques.
C1 [Warren, Jeffrey M.] Oak Ridge Natl Lab, Climate Change Sci Inst, Oak Ridge, TN 37831 USA.
   [Warren, Jeffrey M.] Oak Ridge Natl Lab, Div Environm Sci, Oak Ridge, TN 37831 USA.
   [Bilheux, Hassina; Kang, Misun; Voisin, Sophie] Oak Ridge Natl Lab, Chem & Engn Mat Div, Oak Ridge, TN 37831 USA.
   [Kang, Misun; Cheng, Chu-Lin; Perfect, Edmund] Univ Tennessee, Dept Earth & Planetary Sci, Knoxville, TN 37996 USA.
   [Horita, Juske] Texas Tech Univ, Dept Geosci, Lubbock, TX 79409 USA.
RP Warren, JM (reprint author), Oak Ridge Natl Lab, Climate Change Sci Inst, POB 2008, Oak Ridge, TN 37831 USA.
EM warrenjm@ornl.gov; bilheuxhn@ornl.gov; kangm@ornl.gov; voisins@ornl.gov;
   ccheng7@utk.edu; juske.horita@ttu.edu; eperfect@utk.edu
RI Cheng, Chu-Lin/G-3471-2013; Bilheux, Hassina/H-4289-2012; Warren,
   Jeffrey/B-9375-2012; 
OI Cheng, Chu-Lin/0000-0002-1900-463X; Bilheux,
   Hassina/0000-0001-8574-2449; Warren, Jeffrey/0000-0002-0680-4697;
   Voisin, Sophie/0000-0002-9726-4605
FU Laboratory Directed Research and Development Program of Oak Ridge
   National Laboratory; U.S. Department of Energy [DE-AC05-00OR22725];
   University of Tennessee - Knoxville; Division of Scientific User
   Facilities, Office of Basic Energy Sciences, U.S. Department of Energy;
   UT-Battelle, LLC [DE-AC05-00OR22725]; U.S. Department of Energy
FX We thank Stan Wullschleger for discussion, Terry Pfeiffer for editorial
   assistance, Lowell Crow and Lakeisha Walker for beam line assistance and
   J-C Bilheux and Keely Willis for image reconstruction. Research was
   sponsored by the Laboratory Directed Research and Development Program of
   Oak Ridge National Laboratory, managed by UT-Battelle, LLC, for the U.S.
   Department of Energy under contract DE-AC05-00OR22725, and by the Joint
   Directed Research and Development Program with the University of
   Tennessee - Knoxville. The High Flux Isotope Reactor is supported by the
   Division of Scientific User Facilities, Office of Basic Energy Sciences,
   U.S. Department of Energy.; This work was supported by UT-Battelle, LLC,
   under Contract No. DE-AC05-00OR22725 with the U.S. Department of Energy.
   The United States Government retains and the publisher, by accepting the
   article for publication, acknowledges that the United States Government
   retains a non-exclusive, paid-up, irrevocable, world-wide license to
   publish or reproduce the published form of this manuscript, or allow
   others to do so, for United States Government purposes.
NR 38
TC 15
Z9 16
U1 5
U2 84
PU SPRINGER
PI DORDRECHT
PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS
SN 0032-079X
J9 PLANT SOIL
JI Plant Soil
PD MAY
PY 2013
VL 366
IS 1-2
BP 683
EP 693
DI 10.1007/s11104-012-1579-7
PG 11
WC Agronomy; Plant Sciences; Soil Science
SC Agriculture; Plant Sciences
GA 131JG
UT WOS:000317988600050
ER

PT J
AU Fthenakis, VM
   Kim, HC
AF Fthenakis, Vasilis M.
   Kim, Hyung Chul
TI Life cycle assessment of high-concentration photovoltaic systems
SO PROGRESS IN PHOTOVOLTAICS
LA English
DT Article
DE HCPV; LCA; photovoltaics; environmental
ID ENERGY PAYBACK; EMISSIONS; INDIUM
AB The environmental profiles of photovoltaic (PV) systems are becoming better as materials are used more efficiently in their production, and overall system performance improves. Our analysis details the material and energy inventories in the life cycle of high-concentration PV systems, and, based on measured field-performances, evaluates their energy payback times, life cycle greenhouse gas emissions, and usage of land and water. Although operating high-concentration PV systems require considerable maintenance, their life cycle environmental burden is much lower than that of the flat-plate c-Si systems operating in the same high-insolation regions. The estimated energy payback times of the Amonix 7700 PV system in operation at Phoenix, AZ, is only 0.9year, and its estimated greenhouse gas emissions are 27g CO2-eq./kWh over 30years, or approximately 16g CO2-eq./kWh over 50years. Copyright (c) 2012 John Wiley & Sons, Ltd.
C1 [Fthenakis, Vasilis M.; Kim, Hyung Chul] Brookhaven Natl Lab, PV Environm Res Ctr, Upton, NY 11973 USA.
   [Fthenakis, Vasilis M.; Kim, Hyung Chul] Columbia Univ, Ctr Life Cycle Anal, New York, NY USA.
RP Fthenakis, VM (reprint author), Brookhaven Natl Lab, PV Environm Res Ctr, Upton, NY 11973 USA.
EM vmf@bnl.gov
OI Kim, Hyung Chul/0000-0002-0992-4547
FU Solar Technologies Program, US Department of Energy
   [DE-AC02-76CH000016]; US-DOE
FX The authors thank Matthew Meares and Bob McConnell for providing energy
   production and materials breakdown of the Amonix 7700 needed for this
   analysis. This work was partially supported by the Solar Technologies
   Program, US Department of Energy, under Contract DE-AC02-76CH000016 with
   the US-DOE.
NR 27
TC 21
Z9 21
U1 2
U2 40
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 1062-7995
J9 PROG PHOTOVOLTAICS
JI Prog. Photovoltaics
PD MAY
PY 2013
VL 21
IS 3
BP 379
EP 388
DI 10.1002/pip.1186
PG 10
WC Energy & Fuels; Materials Science, Multidisciplinary; Physics, Applied
SC Energy & Fuels; Materials Science; Physics
GA 133DJ
UT WOS:000318117300013
ER

PT J
AU Crosby, JS
   Lucas, D
   Koshland, CP
AF Crosby, Jeffrey S.
   Lucas, Donald
   Koshland, Catherine P.
TI Fiber optic based evanescent wave sensor for the detection of elemental
   mercury utilizing gold nanorods
SO SENSORS AND ACTUATORS B-CHEMICAL
LA English
DT Article
DE Mercury sensor; Optical sensor; Gold nanoparticles; Fiber optic sensor;
   Plasmonics
ID SURFACE-PLASMON-RESONANCE; NANOPARTICLES; ABSORPTION; SPECTROSCOPY;
   ADSORPTION; SIMULATION; PARTICLES; BIOSENSOR; VAPOR; PROBE
AB We developed a fiber optic based sensor using gold nanorods as the sensing medium for the detection of atmospheric elemental mercury. Mercury readily adsorbs on the nanoparticles causing a measurable shift in the longitudinal localized surface plasmon resonance. Depositing the nanorods on the surface of a bare, bent fiber optic cable provides a means to excite the resonance and determine the absorbance through the evanescent wave at the surface. The response of the system is linear with concentration, and we have been able to directly measure concentrations down to 1.0 mu g/m(3). (c) 2013 Elsevier B.V. All rights reserved.
C1 [Crosby, Jeffrey S.] Univ Calif Berkeley, Dept Mech Engn, Berkeley, CA 94720 USA.
   [Lucas, Donald] LBNL, Environm Energy Technol Div, Berkeley, CA 94720 USA.
   [Koshland, Catherine P.] Univ Calif Berkeley, Sch Publ Hlth, Berkeley, CA 94720 USA.
RP Crosby, JS (reprint author), Univ Calif Berkeley, Dept Mech Engn, Berkeley, CA 94720 USA.
EM j.s.c.crosby@berkeley.edu; D_Lucas@lbl.gov
FU NIEHS [P42ES004705]; Wood-Calvert Chair in Engineering at UC Berkeley
FX This project was supported by Award Number P42ES004705 from NIEHS. The
   content is solely the responsibility of the authors and does not
   necessarily represent the official views of NIEHS or NIH. Additional
   support provided by the Wood-Calvert Chair in Engineering at UC
   Berkeley. The authors wish to thank Jay James for helpful contributions.
NR 32
TC 10
Z9 10
U1 4
U2 66
PU ELSEVIER SCIENCE SA
PI LAUSANNE
PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND
SN 0925-4005
J9 SENSOR ACTUAT B-CHEM
JI Sens. Actuator B-Chem.
PD MAY
PY 2013
VL 181
BP 938
EP 942
DI 10.1016/j.snb.2013.02.037
PG 5
WC Chemistry, Analytical; Electrochemistry; Instruments & Instrumentation
SC Chemistry; Electrochemistry; Instruments & Instrumentation
GA 130ST
UT WOS:000317941100129
ER

PT J
AU Kuhl, AL
   Bell, JB
   Beckner, VE
   Balakrishnan, K
   Aspden, AJ
AF Kuhl, A. L.
   Bell, J. B.
   Beckner, V. E.
   Balakrishnan, K.
   Aspden, A. J.
TI Spherical combustion clouds in explosions
SO SHOCK WAVES
LA English
DT Article
DE Shock-dispersed fuel explosions; Spherical mixing layers; ILES
   simulation of turbulence; Models of combustion of TNT and/or Al
   particles with air; Turbulent kinetic energy spectrum; Rotational and
   dilitational velocity components; Model of dilute two-phase flow
ID HYPERBOLIC CONSERVATION-LAWS; ADAPTIVE MESH REFINEMENT; SHOCK-WAVES;
   MODEL; GAS; IGNITION; POWDERS
AB This study explores the properties of spherical combustion clouds in explosions. Two cases are investigated: (1) detonation of a TNT charge and combustion of its detonation products with air, and (2) shock dispersion of aluminum powder and its combustion with air. The evolution of the blast wave and ensuing combustion cloud dynamics are studied via numerical simulations with our adaptive mesh refinement combustion code. The code solves the multi-phase conservation laws for a dilute heterogeneous continuum as formulated by Nigmatulin. Single-phase combustion (e.g., TNT with air) is modeled in the fast-chemistry limit. Two-phase combustion (e.g., Al powder with air) uses an induction time model based on Arrhenius fits to Boiko's shock tube data, along with an ignition temperature criterion based on fits to Gurevich's data, and an ignition probability model that accounts for multi-particle effects on cloud ignition. Equations of state are based on polynomial fits to thermodynamic calculations with the Cheetah code, assuming frozen reactants and equilibrium products. Adaptive mesh refinement is used to resolve thin reaction zones and capture the energy-bearing scales of turbulence on the computational mesh (ILES approach). Taking advantage of the symmetry of the problem, azimuthal averaging was used to extract the mean and rms fluctuations from the numerical solution, including: thermodynamic profiles, kinematic profiles, and reaction-zone profiles across the combustion cloud. Fuel consumption was limited to 60-70 %, due to the limited amount of air a spherical combustion cloud can entrain before the turbulent velocity field decays away. Turbulent kinetic energy spectra of the solution were found to have both rotational and dilatational components, due to compressibility effects. The dilatational component was typically about 1 % of the rotational component; both seemed to preserve their spectra as they decayed. Kinetic energy of the blast wave decayed due to the pressure field. Turbulent kinetic energy of the combustion cloud decayed due to enstrophy and dilatation (Delta(2)) over bar.
C1 [Kuhl, A. L.] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA.
   [Bell, J. B.; Beckner, V. E.; Balakrishnan, K.; Aspden, A. J.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
RP Kuhl, AL (reprint author), Lawrence Livermore Natl Lab, 7000 East Ave, Livermore, CA 94551 USA.
EM kuhl2@llnl.gov
RI Aspden, Andy/A-7391-2017
OI Aspden, Andy/0000-0002-2970-4824
FU U.S. Department of Energy by Lawrence Livermore National Laboratory
   [DE-AC52-07NA27344]; Defense Threat Reduction Agency under IACRO
   [11-43821]
FX This work was performed under the auspices of the U.S. Department of
   Energy by Lawrence Livermore National Laboratory under Contract
   DE-AC52-07NA27344. It was sponsored by the Defense Threat Reduction
   Agency under IACRO # 11-43821. UCRL-CONF 231319 and LLNL-JRNL-417022.
NR 42
TC 2
Z9 2
U1 2
U2 39
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 0938-1287
EI 1432-2153
J9 SHOCK WAVES
JI Shock Waves
PD MAY
PY 2013
VL 23
IS 3
BP 233
EP 249
DI 10.1007/s00193-012-0410-y
PG 17
WC Mechanics
SC Mechanics
GA 134BH
UT WOS:000318184200007
ER

PT J
AU Ma, BH
   Liu, SS
   Tong, S
   Narayanan, M
   Koritala, RE
   Hu, ZQ
   Balachandran, U
AF Ma, Beihai
   Liu, Shanshan
   Tong, Sheng
   Narayanan, Manoj
   Koritala, Rachel E.
   Hu, Zhongqiang
   Balachandran, Uthamalingam
TI Residual stress of (Pb0.92La0.08)(Zr0.52Ti0.48)O-3 films grown by a
   sol-gel process
SO SMART MATERIALS AND STRUCTURES
LA English
DT Article
ID LEAD-ZIRCONATE-TITANATE; MORPHOTROPIC-PHASE-BOUNDARY; THIN-FILMS;
   MECHANICAL-PROPERTIES; ELECTRICAL-PROPERTIES; DIELECTRIC-PROPERTIES;
   PZT; FERROELECTRICS; THICKNESS; CERAMICS
AB We deposited ferroelectric (Pb0.92La0.08)(Zr0.52Ti0.48)O-3 films of approximate to 0.35 to approximate to 3.1 mu m in thickness on platinized silicon substrates by chemical solution deposition. A dielectric constant of approximate to 1350 and dielectric loss of approximate to 0.04 were measured at room temperature. Hysteresis loop tests revealed that the remanent polarization increases while the coercive field decreases with PLZT film thickness. The residual stress in the PLZT films, as determined by the x-ray diffraction sin(2)psi method, decreased from approximate to 380 to approximate to 200 MPa when the film ;thickness increased from 0.35 to 3.1 mu m. The dependence of the residual stress (sigma) on the PLZT film thickness (t) can be described by an empirical equation, sigma = A(0) exp(-t(2)/lambda(2)), with A(0) approximate to 390 MPa and lambda approximate to 3.8 mu m.
C1 [Ma, Beihai; Liu, Shanshan; Narayanan, Manoj; Hu, Zhongqiang; Balachandran, Uthamalingam] Argonne Natl Lab, Div Energy Syst, Argonne, IL 60439 USA.
   [Tong, Sheng; Koritala, Rachel E.] Argonne Natl Lab, Nanosci & Technol Div, Argonne, IL 60439 USA.
RP Ma, BH (reprint author), Argonne Natl Lab, Div Energy Syst, 9700 S Cass Ave, Argonne, IL 60439 USA.
EM bma@anl.gov
RI Hu, Zhongqiang/I-2528-2012; Tong, Sheng/A-2129-2011; Ma,
   Beihai/I-1674-2013
OI Hu, Zhongqiang/0000-0002-7534-0427; Tong, Sheng/0000-0003-0355-7368; Ma,
   Beihai/0000-0003-3557-2773
FU US Department of Energy, Vehicle Technologies Program
   [DE-AC02-06CH11357]
FX This work was funded by the US Department of Energy, Vehicle
   Technologies Program, under Contract DE-AC02-06CH11357. This study
   benefited from use of the Electron Microscopy Center (EMC) at Argonne
   National Laboratory.
NR 34
TC 6
Z9 6
U1 0
U2 32
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0964-1726
J9 SMART MATER STRUCT
JI Smart Mater. Struct.
PD MAY
PY 2013
VL 22
IS 5
AR 055019
DI 10.1088/0964-1726/22/5/055019
PG 9
WC Instruments & Instrumentation; Materials Science, Multidisciplinary
SC Instruments & Instrumentation; Materials Science
GA 131AJ
UT WOS:000317962300020
ER

PT J
AU Di Vittorio, AV
   Miller, NL
AF Di Vittorio, Alan V.
   Miller, Norman L.
TI Evaluating a modified point-based method to downscale cell-based climate
   variable data to high-resolution grids
SO THEORETICAL AND APPLIED CLIMATOLOGY
LA English
DT Article
ID CIRCULATION MODEL OUTPUT; UNITED-STATES; ECOSYSTEM MODEL; COMPLEX
   TERRAIN; METEOROLOGICAL VARIABLES; MOUNTAINOUS TERRAIN; CHANGE IMPACTS;
   PRECIPITATION; SCENARIOS; TEMPERATURE
AB To address the demand for high spatial resolution gridded climate data, we have advanced the Daymet point-based interpolation algorithm for downscaling global, coarsely gridded data with additional output variables. The updated algorithm, High-Resolution Climate Downscaler (HRCD), performs very good downscaling of daily, global, historical reanalysis data from 1A degrees input resolution to 2.5 arcmin output resolution for day length, downward longwave radiation, pressure, maximum and minimum temperature, and vapor pressure deficit. It gives good results for monthly and yearly cumulative precipitation and fair results for wind speed distributions and modeled downward shortwave radiation. Over complex terrain, 2.5 arcmin resolution is likely too low and aggregating it up to 15 arcmin preserves accuracy. HRCD performs comparably to existing daily and monthly US datasets but with a global extent for nine daily climate variables spanning 1948-2006. Furthermore, HRCD can readily be applied to other gridded climate datasets.
C1 [Di Vittorio, Alan V.] Univ Calif Berkeley, Energy Biosci Inst, Berkeley, CA 94720 USA.
   [Di Vittorio, Alan V.; Miller, Norman L.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Earth Sci, Berkeley, CA 94720 USA.
   [Miller, Norman L.] Univ Calif Berkeley, Dept Geog, Berkeley, CA 94720 USA.
RP Di Vittorio, AV (reprint author), Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Earth Sci, 1 Cyclotron Rd,Mail Stop 84R0171, Berkeley, CA 94720 USA.
EM avdivittorio@lbl.gov
RI Di Vittorio, Alan/M-5325-2013
OI Di Vittorio, Alan/0000-0002-8139-4640
FU Energy Biosciences Institute [EBI07-J120]; Office of Science, Office of
   Basic Energy Sciences of the US Department of Energy [DE-AC02-05CH11231]
FX The Energy Biosciences Institute funded this research under grant
   EBI07-J120. The ISLSCP Initiative II elevation data are courtesy of
   Kristen Verdin, the United States Geological Survey, and the Eros data
   center. Work performed at Lawrence Berkeley National Laboratory,
   including manuscript revision, was supported by the Director, Office of
   Science, Office of Basic Energy Sciences of the US Department of Energy
   under contract no. DE-AC02-05CH11231.
NR 61
TC 1
Z9 1
U1 0
U2 10
PU SPRINGER WIEN
PI WIEN
PA SACHSENPLATZ 4-6, PO BOX 89, A-1201 WIEN, AUSTRIA
SN 0177-798X
J9 THEOR APPL CLIMATOL
JI Theor. Appl. Climatol.
PD MAY
PY 2013
VL 112
IS 3-4
BP 495
EP 519
DI 10.1007/s00704-012-0740-9
PG 25
WC Meteorology & Atmospheric Sciences
SC Meteorology & Atmospheric Sciences
GA 134WK
UT WOS:000318246300012
ER

PT J
AU Apelberg, BJ
   Hepp, LM
   Avila-Tang, E
   Gundel, L
   Hammond, SK
   Hovell, MF
   Hyland, A
   Klepeis, NE
   Madsen, CC
   Navas-Acien, A
   Repace, J
   Samet, JM
   Breysse, PN
AF Apelberg, Benjamin J.
   Hepp, Lisa M.
   Avila-Tang, Erika
   Gundel, Lara
   Hammond, S. Katharine
   Hovell, Melbourne F.
   Hyland, Andrew
   Klepeis, Neil E.
   Madsen, Camille C.
   Navas-Acien, Ana
   Repace, James
   Samet, Jonathan M.
   Breysse, Patrick N.
TI Environmental monitoring of secondhand smoke exposure
SO TOBACCO CONTROL
LA English
DT Review
ID INDOOR AIR-QUALITY; POLYCYCLIC AROMATIC-HYDROCARBONS; SUSPENDED PARTICLE
   EXPOSURES; VOLATILE ORGANIC-COMPOUNDS; TOBACCO-SMOKE; PERSONAL EXPOSURE;
   PASSIVE SMOKING; CARBON-MONOXIDE; PUBLIC PLACES; HOUSEHOLD SMOKING
AB The complex composition of secondhand smoke (SHS) provides a range of constituents that can be measured in environmental samples (air, dust and on surfaces) and therefore used to assess non-smokers' exposure to tobacco smoke. Monitoring SHS exposure (SHSe) in indoor environments provides useful information on the extent and consequences of SHSe, implementing and evaluating tobacco control programmes and behavioural interventions, and estimating overall burden of disease caused by SHSe. The most widely used markers have been vapour-phase nicotine and respirable particulate matter (PM). Numerous other environmental analytes of SHS have been measured in the air including carbon monoxide, 3-ethenylpyridine, polycyclic aromatic hydrocarbons, tobacco-specific nitrosamines, nitrogen oxides, aldehydes and volatile organic compounds, as well as nicotine in dust and on surfaces. The measurement of nicotine in the air has the advantage of reflecting the presence of tobacco smoke. While PM measurements are not as specific, they can be taken continuously, allowing for assessment of exposure and its variation over time. In general, when nicotine and PM are measured in the same setting using a common sampling period, an increase in nicotine concentration of 1 mu g/m(3) corresponds to an average increase of 10 mu g/m(3) of PM. This topic assessment presents a comprehensive summary of SHSe monitoring approaches using environmental markers and discusses the strengths and weaknesses of these methods and approaches.
C1 [Apelberg, Benjamin J.; Avila-Tang, Erika] Johns Hopkins Bloomberg Sch Publ Hlth, Dept Epidemiol, Inst Global Tobacco Control, Baltimore, MD 21205 USA.
   [Hepp, Lisa M.; Madsen, Camille C.] Johns Hopkins Bloomberg Sch Publ Hlth, Inst Global Tobacco Control, Dept Hlth Behav & Soc, Baltimore, MD 21205 USA.
   [Avila-Tang, Erika] Amer Acad Pediat, Julius B Richmond Ctr Excellence, Elk Grove Village, IL USA.
   [Gundel, Lara] Lawrence Berkeley Natl Lab, Dept Indoor Environm, Berkeley, CA USA.
   [Hammond, S. Katharine] Univ Calif Berkeley, Sch Publ Hlth, Berkeley, CA 94720 USA.
   [Hovell, Melbourne F.] San Diego State Univ, Ctr Behav Epidemiol & Community Hlth, San Diego, CA 92182 USA.
   [Hyland, Andrew] Roswell Pk Canc Inst, Dept Hlth Behav, Buffalo, NY 14263 USA.
   [Klepeis, Neil E.] Stanford Univ, Dept Civil & Environm Engn, Stanford, CA 94305 USA.
   [Navas-Acien, Ana; Breysse, Patrick N.] Johns Hopkins Bloomberg Sch Publ Hlth, Dept Environm Hlth Sci, Baltimore, MD 21205 USA.
   [Repace, James] Repace Associates Inc, Secondhand Smoke Consultants, Bowie, MD USA.
   [Samet, Jonathan M.] Univ So Calif, Dept Prevent Med, Los Angeles, CA 90089 USA.
RP Breysse, PN (reprint author), Johns Hopkins Bloomberg Sch Publ Hlth, Dept Environm Hlth Sci, 615N Wolfe St, Baltimore, MD 21205 USA.
EM pbreysse@jhsph.edu
FU Flight Attendant Medical Research Institute; University of California,
   San Francisco Bland Lane Center of Excellence; American Academy of
   Pediatrics Julius B Richmond Center of Excellence
FX This work was supported by grants from the Flight Attendant Medical
   Research Institute to the Johns Hopkins Center of Excellence; the
   University of California, San Francisco Bland Lane Center of Excellence;
   and the American Academy of Pediatrics Julius B Richmond Center of
   Excellence. The funding organisation had no role in the preparation of
   the manuscripts.
NR 150
TC 34
Z9 34
U1 5
U2 45
PU BMJ PUBLISHING GROUP
PI LONDON
PA BRITISH MED ASSOC HOUSE, TAVISTOCK SQUARE, LONDON WC1H 9JR, ENGLAND
SN 0964-4563
J9 TOB CONTROL
JI Tob. Control
PD MAY
PY 2013
VL 22
IS 3
BP 147
EP 155
DI 10.1136/tobaccocontrol-2011-050301
PG 9
WC Public, Environmental & Occupational Health
SC Public, Environmental & Occupational Health
GA 126DC
UT WOS:000317590900004
PM 22949497
ER

PT J
AU Pennycook, SJ
   Zhou, H
   Chisholm, MF
   Borisevich, AY
   Varela, M
   Gazquez, J
   Pennycook, TJ
   Narayan, J
AF Pennycook, S. J.
   Zhou, H.
   Chisholm, M. F.
   Borisevich, A. Y.
   Varela, M.
   Gazquez, J.
   Pennycook, T. J.
   Narayan, J.
TI Misfit accommodation in oxide thin film heterostructures
SO ACTA MATERIALIA
LA English
DT Article
DE Thin films; Defects; Dislocations; Misfit relaxation
ID TRANSMISSION ELECTRON-MICROSCOPY; THREADING DISLOCATIONS;
   GRAIN-BOUNDARIES; INTERFACE; OXYGEN; EPITAXY; GROWTH; RECONSTRUCTION;
   SEMICONDUCTORS; MECHANISMS
AB Complex oxides are of intense interest due to their diverse properties, such as colossal magnetoresistance and superconductivity. Their complexity arises not only from the number of constituent elements, but also from their tolerance of non-stoichiometry and the structural complexity of these perovskite-based materials, e.g. the distortions and rotations of the oxygen octahedra surrounding the B-site cation. For these reasons, misfit accommodation in these materials is far more complex than in simpler materials, and can involve several different mechanisms simultaneously. In some cases, interfaces can be free from any misfit dislocations, lattice mismatch being accommodated via incorporation of oxygen vacancies, which take an ordered periodic arrangement. Interfaces may also present a perturbation to the octahedral rotations that can dramatically affect properties, not just close to the interface but through the entire film. In oxygen ion conducting materials, the oxygen sublattice may even melt in some situations. (c) 2012 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
C1 [Pennycook, S. J.; Chisholm, M. F.; Borisevich, A. Y.; Varela, M.] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA.
   [Pennycook, S. J.] Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USA.
   [Zhou, H.; Narayan, J.] N Carolina State Univ, Dept Mat Sci & Engn, Raleigh, NC 27695 USA.
   [Gazquez, J.] Univ Complutense Madrid, Dept Fis Aplicada 3, E-28040 Madrid, Spain.
   [Pennycook, T. J.] SuperSTEM, Daresbury, England.
RP Pennycook, SJ (reprint author), Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA.
EM Pennycooksj@ornl.gov
RI Borisevich, Albina/B-1624-2009; Pennycook, Timothy/B-4946-2014; Gazquez,
   Jaume/C-5334-2012; Varela, Maria/E-2472-2014; Varela, Maria/H-2648-2012
OI Borisevich, Albina/0000-0002-3953-8460; Pennycook,
   Timothy/0000-0002-0008-6516; Gazquez, Jaume/0000-0002-2561-328X; Varela,
   Maria/0000-0002-6582-7004; 
NR 61
TC 21
Z9 21
U1 5
U2 120
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 1359-6454
J9 ACTA MATER
JI Acta Mater.
PD MAY
PY 2013
VL 61
IS 8
SI SI
BP 2725
EP 2733
DI 10.1016/j.actamat.2012.09.069
PG 9
WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical
   Engineering
SC Materials Science; Metallurgy & Metallurgical Engineering
GA 128VL
UT WOS:000317797700002
ER

PT J
AU Budai, JD
   Tselev, A
   Tischler, JZ
   Strelcov, E
   Kolmakov, A
   Liu, WJ
   Gupta, A
   Narayan, J
AF Budai, J. D.
   Tselev, A.
   Tischler, J. Z.
   Strelcov, E.
   Kolmakov, A.
   Liu, W. J.
   Gupta, A.
   Narayan, J.
TI In situ X-ray microdiffraction studies inside individual VO2
   microcrystals
SO ACTA MATERIALIA
LA English
DT Article
DE Synchrotron microdiffraction; Phase transition; Interfaces; Twinning
ID METAL-INSULATOR-TRANSITION; VANADIUM DIOXIDE NANOBEAMS;
   PHASE-TRANSITION; STRAIN; DOMAINS; NANOPLATELETS; ORGANIZATION;
   MICROBEAM; NANOWIRES; DYNAMICS
AB Synchrotron X-ray microdiffraction provides quantitative structural measurements with submicron spatial resolution, and hence enables investigations of how local microstructural inhomogeneities affect materials' properties. A combination of polychromatic and monochromatic X-ray microdiffraction was used to investigate domain formation, interface orientations and strain distributions inside individual vanadium dioxide (VO2) microcrystals. Using in situ measurements near the VO2 metal-insulator phase transition, it was found that the observed phase evolution is critically dependent on external strain. Substrate-induced strains or inhomogeneous sample heating can directly alter phase stability and affect the local domain orientations. In different clamped or freely suspended single-crystal samples, all the predicted twin laws for the M2 phase in VO2 were observed, except one. When the rutile and M2 phases coexist, it was found that different interphase boundary orientations can be stabilized by sample size and by interfacial elastic strain. The large variations in phase sequences and domain orientations observed in relatively simple, small single crystals provide insight into the mechanisms responsible for the broad structural and electronic transitions observed in epitaxial VO2 films. (c) 2012 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
C1 [Budai, J. D.; Tischler, J. Z.] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA.
   [Tselev, A.] Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Oak Ridge, TN 37831 USA.
   [Strelcov, E.; Kolmakov, A.] So Illinois Univ, Carbondale, IL 62901 USA.
   [Liu, W. J.] Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA.
   [Gupta, A.; Narayan, J.] N Carolina State Univ, Raleigh, NC 27695 USA.
RP Budai, JD (reprint author), Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA.
EM budaijd@ornl.gov
RI Strelcov, Evgheni/H-1654-2013; Tselev, Alexander/L-8579-2015; Budai,
   John/R-9276-2016; Kolmakov, Andrei/B-1460-2017
OI Tselev, Alexander/0000-0002-0098-6696; Budai, John/0000-0002-7444-1306;
   Kolmakov, Andrei/0000-0001-5299-4121
NR 55
TC 5
Z9 5
U1 3
U2 90
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 1359-6454
J9 ACTA MATER
JI Acta Mater.
PD MAY
PY 2013
VL 61
IS 8
SI SI
BP 2751
EP 2762
DI 10.1016/j.actamat.2012.09.074
PG 12
WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical
   Engineering
SC Materials Science; Metallurgy & Metallurgical Engineering
GA 128VL
UT WOS:000317797700004
ER

PT J
AU Chen, AP
   Bi, ZX
   Jia, QX
   MacManus-Driscoll, JL
   Wang, HY
AF Chen, Aiping
   Bi, Zhenxing
   Jia, Quanxi
   MacManus-Driscoll, Judith L.
   Wang, Haiyan
TI Microstructure, vertical strain control and tunable functionalities in
   self-assembled, vertically aligned nanocomposite thin films
SO ACTA MATERIALIA
LA English
DT Article
DE Vertically aligned nanocomposite thin films; Pulsed laser deposition;
   Microstructure; Vertical strain; Functionality
ID LOW-FIELD MAGNETORESISTANCE; MULTIFERROIC NANOSTRUCTURES;
   EPITAXIAL-FILMS; FERROELECTRICITY; DEPOSITION; INTERFACE; DESIGN
AB Vertically aligned nanocomposite (VAN) oxide thin films have recently stimulated a significant amount of research interest owing to their novel architecture, vertical interfacial strain control and tunable material functionalities. In this work, the growth mechanisms of VAN thin films have been investigated by varying the composite material system, the ratio of the two constituent phases, and the thin film growth conditions including deposition temperature and oxygen pressure as well as growth rate. It has been shown that thermodynamic parameters, elastic and interfacial energies and the multiple phase ratio play dominant roles in the resulting microstructure. In addition, vertical interfacial strain has been observed in BiFeO3 (BFO)- and La0.7Sr0.3MnO3 (LSMO)-based VAN thin film systems; the vertical strain could be tuned by the growth parameters and selection of a suitable secondary phase. The tunability of physical properties such as dielectric loss in BFO:Sm2O3 VAN and low-field magnetoresistance in LSMO-based VAN systems has been demonstrated. The enhancement and tunability of those physical properties have been attributed to the unique VAN architecture and vertical strain control. These results suggest that VAN architecture with novel microstructure and unique vertical strain tuning could provide a general route for tailoring and manipulating the functionalities of oxide thin films. (c) 2012 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
C1 [Chen, Aiping; Bi, Zhenxing; Wang, Haiyan] Texas A&M Univ, Dept Elect & Comp Engn, College Stn, TX 77843 USA.
   [Jia, Quanxi] Los Alamos Natl Lab, Ctr Integrated Nanotechnol CINT, Los Alamos, NM 87545 USA.
   [MacManus-Driscoll, Judith L.] Univ Cambridge, Dept Mat Sci & Met, Cambridge CB2 3QZ, England.
RP Wang, HY (reprint author), Texas A&M Univ, Dept Elect & Comp Engn, College Stn, TX 77843 USA.
EM wangh@ece.tamu.edu
RI Jia, Q. X./C-5194-2008; Wang, Haiyan/P-3550-2014; Chen,
   Aiping/F-3212-2011
OI Wang, Haiyan/0000-0002-7397-1209; Chen, Aiping/0000-0003-2639-2797
NR 47
TC 43
Z9 43
U1 11
U2 135
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 1359-6454
J9 ACTA MATER
JI Acta Mater.
PD MAY
PY 2013
VL 61
IS 8
SI SI
BP 2783
EP 2792
DI 10.1016/j.actamat.2012.09.072
PG 10
WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical
   Engineering
SC Materials Science; Metallurgy & Metallurgical Engineering
GA 128VL
UT WOS:000317797700007
ER

PT J
AU Tomida, T
   Wakita, M
   Yasuyama, M
   Sugaya, S
   Tomota, Y
   Vogel, SC
AF Tomida, T.
   Wakita, M.
   Yasuyama, M.
   Sugaya, S.
   Tomota, Y.
   Vogel, S. C.
TI Memory effects of transformation textures in steel and its prediction by
   the double Kurdjumov-Sachs relation
SO ACTA MATERIALIA
LA English
DT Article
DE Low carbon steel; Texture memory effect; Phase transformation;
   Orientation relationship; Neutron diffraction
ID IN-SITU OBSERVATION; NEUTRON-DIFFRACTION; VARIANT SELECTION;
   PHASE-TRANSFORMATIONS; DEFORMATION; AUSTENITE; MECHANISM; ALLOYS
AB The phenomenon that the transformation texture near the initial texture reproduces after the phase transformation cycle such as ferrite (alpha, body-centered cubic) -> austenite (gamma, face-centered cubic) -> alpha is called a texture memory. In this study, the texture change in a 0.1% C-1% Mn hot-rolled steel sheet during the alpha -> gamma -> alpha transformation cycle was studied via neutron diffraction and the transformation texture prediction based on a variant selection rule that we call the double Kurdjumov-Sachs (K-S) relation. The texture change observed by neutron diffraction, which clearly showed the texture memory, could be quantitatively reproduced by the proposed variant selection rule adopted into the calculation method based on the spherical harmonics expansion of orientation distribution functions. Therefore, it is most likely that the texture memory in steel is caused by the preferential selection of those K-S variants that reduce the interfacial energy between a precipitate and two adjoining parent phase grains at the same time, which we call the double K-S relation. (c) 2013 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
C1 [Tomida, T.; Wakita, M.; Yasuyama, M.] Nippon Steel & Sumitomo Met Corp, Tech Res & Dev Bur, Steel Res Labs, Amagasaki, Hyogo 6600891, Japan.
   [Sugaya, S.; Tomota, Y.] Ibaraki Univ, Grad Sch Sci & Engn, Inst Appl Beam Sci, Hitachi, Ibaraki 3268511, Japan.
   [Vogel, S. C.] Los Alamos Natl Lab, Los Alamos Neutron Sci Ctr, Los Alamos, NM 87545 USA.
RP Wakita, M (reprint author), Nippon Steel & Sumitomo Met Corp, Tech Res & Dev Bur, Steel Res Labs, 1-8 Fuso Cho, Amagasaki, Hyogo 6600891, Japan.
EM wakita.4h8.masayuki@jp.nssmc.com
OI Vogel, Sven C./0000-0003-2049-0361
FU Office of Basic Energy Sciences, U.S. Department of Energy; Los Alamos
   National Security LLC under DOE [DE-AC52-06NA25396]
FX This work has benefited from the use of the Lujan Neutron Scattering
   Center at LANSCE, which is funded by the Office of Basic Energy
   Sciences, U.S. Department of Energy. Los Alamos National Laboratory is
   operated by Los Alamos National Security LLC under DOE Contract No.
   DE-AC52-06NA25396.
NR 33
TC 9
Z9 10
U1 2
U2 20
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 1359-6454
J9 ACTA MATER
JI Acta Mater.
PD MAY
PY 2013
VL 61
IS 8
SI SI
BP 2828
EP 2839
DI 10.1016/j.actamat.2013.01.015
PG 12
WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical
   Engineering
SC Materials Science; Metallurgy & Metallurgical Engineering
GA 128VL
UT WOS:000317797700010
ER

PT J
AU Mitchell, TE
   Hirth, JP
   Schwartz, DS
   Mitchell, JN
AF Mitchell, T. E.
   Hirth, J. P.
   Schwartz, D. S.
   Mitchell, J. N.
TI The beta -> alpha phase transformation in plutonium
SO ACTA MATERIALIA
LA English
DT Article
DE Plutonium; Phase transformation; Crystallography; Topological modeling
ID CRYSTAL STRUCTURE; MARTENSITIC TRANSFORMATIONS; UNALLOYED PLUTONIUM;
   GAMMA-PLUTONIUM; GA ALLOY; METAL; CRYSTALLOGRAPHY; KINETICS;
   DISCONNECTIONS; TEMPERATURES
AB The beta -> alpha transformation in plutonium is discussed in terms of the crystallography of the two phases and the resulting topological modeling of the beta/alpha interface. There has been little microscopy work on the transformation, but it is probably martensitic. beta-Pu is monoclinic I2/m, while alpha-Pu is monoclinic P2(1)/m. alpha-Pu has been described as a hexagonal close-packed pseudostructure with AB stacking of the (0 2 0)(alpha) planes with pseudo-close-packing along [1 0 0](alpha) and two other directions. beta-Pu is less obvious, but X-ray diffraction suggests that the (1 0 3)(beta) planes, which are selected as the terrace plane, have the highest structure factor and are therefore among the closest-packed planes. Other pseudo-close-packed planes, such as {2 2 (2) over bar}(beta) and {3 2 (1) over bar}(beta), could also act as terrace planes for the transformation. The (1 0 3)(beta) planes have a pseudo-hexagonal grid of Pu atoms with AB stacking and pseudo-close-packing along [3 0 (1) over bar](beta) and two other directions. A selection of terrace planes as (0 2 0)(alpha)//(1 0 3)(beta) with disconnections along [1 0 0](alpha)//[3 0 (1) over bar](beta) provides the basis for topological modeling. The model predicts a habit plane that is similar to 6 degrees from the terrace plane. The extra Pu atoms in the beta structure (17 for every 16 in alpha) are accommodated by having 16 (1 0 3)(beta) planes transform into 17 (0 2 0)(alpha) planes at steps in the interface. Short-range interstitial diffusion of Pu atoms from beta to alpha is required for the transformation to proceed. Possible lattice invariant deformation systems are discussed. Published by Elsevier Ltd. on behalf of Acta Materialia Inc.
C1 [Mitchell, T. E.; Hirth, J. P.; Schwartz, D. S.; Mitchell, J. N.] Los Alamos Natl Lab, Mat Sci & Technol Div, Los Alamos, NM 87545 USA.
RP Mitchell, JN (reprint author), Los Alamos Natl Lab, Mat Sci & Technol Div, Los Alamos, NM 87545 USA.
EM jeremy@lanl.gov
RI Mitchell, Jeremy/E-2875-2010
OI Mitchell, Jeremy/0000-0001-7109-3505
NR 45
TC 1
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U1 5
U2 31
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 1359-6454
J9 ACTA MATER
JI Acta Mater.
PD MAY
PY 2013
VL 61
IS 8
SI SI
BP 2895
EP 2908
DI 10.1016/j.actamat.2013.01.036
PG 14
WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical
   Engineering
SC Materials Science; Metallurgy & Metallurgical Engineering
GA 128VL
UT WOS:000317797700016
ER

PT J
AU Xue, F
   Wang, JJ
   Sheng, G
   Huang, E
   Cao, Y
   Huang, HH
   Munroe, P
   Mahjoub, R
   Li, YL
   Nagarajan, V
   Chen, LQ
AF Xue, F.
   Wang, J. J.
   Sheng, G.
   Huang, Esther
   Cao, Y.
   Huang, H. H.
   Munroe, Paul
   Mahjoub, R.
   Li, Y. L.
   Nagarajan, Valanoor
   Chen, L. Q.
TI Phase field simulations of ferroelectrics domain structures in
   PbZrxTi1-xO3 bilayers
SO ACTA MATERIALIA
LA English
DT Article
DE Ferroelectric; Bilayer; Domain structures; Phase field simulations
ID SOLID-SOLUTION SYSTEM; TITANATE THIN-FILMS; THERMODYNAMIC THEORY;
   BOUNDARY-CONDITIONS; POLARIZATION; SUPERLATTICES; STABILITY; STATE
AB Domain stability and structures in Pb(Zr0.3Ti0.7)O-3/Pb(Zr0.7Ti0.3)O-3 bilayer films under different substrate strains are studied using the phase field method. It is demonstrated that the domain structure of the bilayer film is very different from those of the corresponding single layer films grown on the same silicon substrate with an incoherent interface. Moreover, the predicted rhombohedral domains in the Pb(Zr0.7Ti0.3)O-3 layer of the bilayer film have smaller sizes than those in the single layer case. These results are compared with experimental observations and previous thermodynamic analyses. The polarization distributions of the ferroelectric-paraelectric bilayer are analyzed as a function of the thickness of the bilayer film, where there is a "ferroelectric proximity effect" due to dipole-dipole interactions. The phase diagrams for both the bilayer and single layer films as a function of temperature and effective in-plane substrate strain are constructed. (c) 2013 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
C1 [Xue, F.; Wang, J. J.; Sheng, G.; Cao, Y.; Chen, L. Q.] Penn State Univ, Dept Mat & Engn, University Pk, PA 16802 USA.
   [Wang, J. J.] Univ Sci & Technol Beijing, Dept Phys, Beijing 100083, Peoples R China.
   [Huang, Esther; Huang, H. H.; Munroe, Paul; Mahjoub, R.; Nagarajan, Valanoor] Univ New S Wales, Sch Mat Sci & Engn, Sydney, NSW 2052, Australia.
   [Li, Y. L.] Pacific NW Natl Lab, Richland, WA 99354 USA.
RP Xue, F (reprint author), Penn State Univ, Dept Mat & Engn, University Pk, PA 16802 USA.
EM xuefei5376@gmail.com
RI Sheng, Guang/C-2043-2012; Chen, LongQing/I-7536-2012; valanoor,
   nagarajan/B-4159-2012; Cao, Ye/L-1271-2016; Munroe, Paul/I-9313-2016
OI Chen, LongQing/0000-0003-3359-3781; Cao, Ye/0000-0002-7365-7447; Munroe,
   Paul/0000-0002-5091-2513
FU NSF MRSEC [DMR-0820404, DMR-1006541, DMR-1210588]; ARC Discovery Project
   scheme
FX This work was supported by the NSF MRSEC under Grants Nos. DMR-0820404,
   DMR-1006541, and DMR-1210588. The work at UNSW was supported by the ARC
   Discovery Project scheme.
NR 49
TC 16
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U1 2
U2 82
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 1359-6454
EI 1873-2453
J9 ACTA MATER
JI Acta Mater.
PD MAY
PY 2013
VL 61
IS 8
SI SI
BP 2909
EP 2918
DI 10.1016/j.actamat.2013.01.038
PG 10
WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical
   Engineering
SC Materials Science; Metallurgy & Metallurgical Engineering
GA 128VL
UT WOS:000317797700017
ER

PT J
AU Catoor, D
   Gao, YF
   Geng, J
   Prasad, MJNV
   Herbert, EG
   Kumar, KS
   Pharr, GM
   George, EP
AF Catoor, D.
   Gao, Y. F.
   Geng, J.
   Prasad, M. J. N. V.
   Herbert, E. G.
   Kumar, K. S.
   Pharr, G. M.
   George, E. P.
TI Incipient plasticity and deformation mechanisms in single-crystal Mg
   during spherical nanoindentation
SO ACTA MATERIALIA
LA English
DT Article
DE Mg single crystal; Nanoindentation pop-in; Dislocation nucleation
ID ATOMISTIC SIMULATIONS; RATE DEPENDENCE; MAGNESIUM; NUCLEATION;
   MICROCOMPRESSION; BEHAVIOR; HARDNESS; SOLIDS; LOAD
AB Incipient plasticity in Mg single crystals was investigated using the pop-ins generated during spherical nanoindentation on (0001), (10-12) and (10-10) surfaces. Representative deformed regions extracted from underneath indents by means of focused ion beam machining were examined by transmission electron microscopy (TEM) to identify the deformation mechanisms. Anisotropic elastic Hertzian contact theory was used to calculate indentation Schmid factors and the relevant resolved shear stresses at pop-in from the load-displacement curves. The pop-in statistics in conjunction with the TEM analysis showed that the most likely deformation mechanism responsible for pop-in is slip via (a) dislocations even in the case of indentation along the c-axis. (c) 2013 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
C1 [Catoor, D.; Gao, Y. F.; Herbert, E. G.; Pharr, G. M.; George, E. P.] Oak Ridge Natl Lab, Mat Sci & Technol Div, Oak Ridge, TN 37831 USA.
   [Gao, Y. F.; Herbert, E. G.; Pharr, G. M.; George, E. P.] Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USA.
   [Geng, J.; Prasad, M. J. N. V.; Kumar, K. S.] Brown Univ, Sch Engn, Providence, RI 02912 USA.
RP Catoor, D (reprint author), Oak Ridge Natl Lab, Mat Sci & Technol Div, Oak Ridge, TN 37831 USA.
EM catoord@ornl.gov
RI Gao, Yanfei/F-9034-2010; George, Easo/L-5434-2014; Geng, Jie/B-8899-2009
OI Gao, Yanfei/0000-0003-2082-857X; Geng, Jie/0000-0003-0422-0230
FU Center for Defect Physics, an Energy Frontier Research Center; US
   Department of Energy, Office of Basic Energy Sciences
FX This research was sponsored by the Center for Defect Physics, an Energy
   Frontier Research Center supported by the US Department of Energy,
   Office of Basic Energy Sciences. We are grateful to Prof. S.R. Agnew for
   his valuable advice on metallographic sample preparation of magnesium.
NR 37
TC 25
Z9 25
U1 6
U2 89
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 1359-6454
J9 ACTA MATER
JI Acta Mater.
PD MAY
PY 2013
VL 61
IS 8
SI SI
BP 2953
EP 2965
DI 10.1016/j.actamat.2013.01.055
PG 13
WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical
   Engineering
SC Materials Science; Metallurgy & Metallurgical Engineering
GA 128VL
UT WOS:000317797700021
ER

PT J
AU Ding, J
   Cheng, YQ
   Ma, E
AF Ding, Jun
   Cheng, Yongqiang
   Ma, Evan
TI Charge-transfer-enhanced prism-type local order in amorphous
   Mg65Cu25Y10: Short-to-medium-range structural evolution underlying
   liquid fragility and heat capacity
SO ACTA MATERIALIA
LA English
DT Article
DE Metallic glass; Molecular dynamics; Ionicity; Short-range order; Heat
   capacity; Fragility
ID BULK METALLIC-GLASS; AUGMENTED-WAVE METHOD; ATOMIC PACKING;
   TERNARY-SYSTEM; CRITICAL SIZE; ALLOYS; STRENGTH; THERMODYNAMICS;
   CLASSIFICATION; DUCTILITY
AB Using classical and ab initio molecular dynamics simulations, we have probed into the atomic and electronic structures of an amorphous Mg alloy, Mg65Cu25Y10, as a representative of Mg alloys that form bulk metallic glasses (MGs). Different from some MGs where the icosahedral motifs are the key coordination polyhedra, here the featured short-range order (SRO) is dominated by Cu-centered bicapped square antiprisms and tricapped trigonal prisms. Bond shortening is observed for Mg-Cu and Y-Cu bonds, due to appreciable charge transfer that imparts an ionic character to the bonding. This enhances their chemical affinity, accentuating Cu-centered motifs analogous to solute-centered prisms in metal-metalloid MGs in this all-metal system. The prism-type SRO is prevalent even at high temperatures in the (supercooled) liquids, as revealed from the inherent structures. A weak temperature dependence is observed for the degree of characteristic SRO with undercooling, as well as for the development of connections of the motifs in the medium range. Such a structural evolution is contrasted with the rapidly ascending icosahedral order in Cu64Zr36 supercooled liquids, and explains the much more shallow specific heat curve as well as the low fragility of the Mg65Cu25Y10 supercooled liquid. (c) 2013 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
C1 [Ding, Jun; Ma, Evan] Johns Hopkins Univ, Dept Mat Sci & Engn, Baltimore, MD 21218 USA.
   [Cheng, Yongqiang] Oak Ridge Natl Lab, Chem & Engn Mat Div, Oak Ridge, TN 37831 USA.
RP Ding, J (reprint author), Johns Hopkins Univ, Dept Mat Sci & Engn, Baltimore, MD 21218 USA.
EM ding@jhu.edu
RI Ma, En/A-3232-2010; Cheng, Yongqiang/F-6567-2010; Ding, Jun/K-1989-2012
OI Ding, Jun/0000-0002-4091-8663
FU US National Science Foundation, Division of Materials Research
   [NSF-DMR-0904188]; Scientific User Facilities Division, Office of Basic
   Energy Sciences, US Department of Energy
FX The authors are indebted to Dr. H.W. Sheng for developing the EAM
   potentials for this system, for sharing the computer codes used for
   analysis and for many stimulating discussions. This work was supported
   by the US National Science Foundation, Division of Materials Research,
   under Contract No. NSF-DMR-0904188. Y.Q.C. was supported by the
   Scientific User Facilities Division, Office of Basic Energy Sciences, US
   Department of Energy.
NR 58
TC 20
Z9 20
U1 4
U2 58
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 1359-6454
EI 1873-2453
J9 ACTA MATER
JI Acta Mater.
PD MAY
PY 2013
VL 61
IS 8
SI SI
BP 3130
EP 3140
DI 10.1016/j.actamat.2013.02.004
PG 11
WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical
   Engineering
SC Materials Science; Metallurgy & Metallurgical Engineering
GA 128VL
UT WOS:000317797700038
ER

PT J
AU Edmonds, J
   Luckow, P
   Calvin, K
   Wise, M
   Dooley, J
   Kyle, P
   Kim, SH
   Patel, P
   Clarke, L
AF Edmonds, James
   Luckow, Patrick
   Calvin, Katherine
   Wise, Marshall
   Dooley, Jim
   Kyle, Page
   Kim, Son H.
   Patel, Pralit
   Clarke, Leon
TI Can radiative forcing be limited to 2.6 Wm(-2) without negative
   emissions from bioenergy AND CO2 capture and storage?
SO CLIMATIC CHANGE
LA English
DT Article
ID CARBON-DIOXIDE CAPTURE; GREENHOUSE-GAS EMISSIONS; CAPACITY ESTIMATION;
   CLIMATE POLICY; ENERGY; SCENARIOS
AB Combining bioenergy and carbon dioxide (CO2) capture and storage (CCS) technologies (BECCS) has the potential to remove CO2 from the atmosphere while producing useful energy. BECCS has played a central role in scenarios that reduce climate forcing to low levels such as 2.6 Wm(-2). In this paper we consider whether BECCS is essential to limiting radiative forcing (RF) to 2.6 Wm(-2) by 2100 using the Global Change Assessment Model, a closely coupled model of biogeophysical and human Earth systems. We show that BECCS can potentially reduce the cost of limiting RF to 2.6 Wm(-2) by 2100 but that a variety of technology combinations that do not include BECCS can also achieve this goal, under appropriate emissions mitigation policies. We note that with appropriate supporting land-use policies terrestrial sequestration could deliver carbon storage ranging from 200 to 700 PgCO(2)-equiavalent over the 21st century. We explore substantial delays in participation by some geopolitical regions. We find that the value of BECCS is substantially higher under delay and that delay results in higher transient RF and climate change. However, when major regions postponed mitigation indefinitely, it was impossible to return RF to 2.6 Wm(-2) by 2100. Neither finite land resources nor finite potential geologic storage capacity represented a meaningful technical limit on the ability of BECCS to contribute to emissions mitigation in the numerical experiments reported in this paper.
C1 [Edmonds, James; Calvin, Katherine; Wise, Marshall; Dooley, Jim; Kyle, Page; Kim, Son H.; Patel, Pralit; Clarke, Leon] Pacific NW Natl Lab, Joint Global Change Res Inst, College Pk, MD 20740 USA.
   [Luckow, Patrick] Synapse Energy Econ Inc, Cambridge, MA 02139 USA.
RP Edmonds, J (reprint author), Pacific NW Natl Lab, Joint Global Change Res Inst, 5825 Univ Res Court,Suite 3500, College Pk, MD 20740 USA.
EM jae@pnnl.gov
OI Calvin, Katherine/0000-0003-2191-4189
FU U.S. Department of Energy's Office of Science
FX The authors are grateful to the U.S. Department of Energy's Office of
   Science for financial support for the development of the Global Change
   Assessment Model, which was used in this paper. The authors are grateful
   to two anonymous reviewers and the editors. We are also indebted to
   Yannick La Page and George Hurtt for helpful comments on a previous
   draft. Of course, the opinions expressed here are the authors' alone.
NR 35
TC 20
Z9 20
U1 3
U2 21
PU SPRINGER
PI DORDRECHT
PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS
SN 0165-0009
J9 CLIMATIC CHANGE
JI Clim. Change
PD MAY
PY 2013
VL 118
IS 1
SI SI
BP 29
EP 43
DI 10.1007/s10584-012-0678-z
PG 15
WC Environmental Sciences; Meteorology & Atmospheric Sciences
SC Environmental Sciences & Ecology; Meteorology & Atmospheric Sciences
GA 130NZ
UT WOS:000317926500003
ER

PT J
AU Smith, LJ
   Torn, MS
AF Smith, Lydia J.
   Torn, Margaret S.
TI Ecological limits to terrestrial biological carbon dioxide removal
SO CLIMATIC CHANGE
LA English
DT Article
ID LAND-USE CHANGE; NET PRIMARY PRODUCTION; GULF-OF-MEXICO; CLIMATE-CHANGE;
   WATER YIELD; HUMAN APPROPRIATION; UNITED-STATES; PHOSPHORUS LIMITATION;
   PLANTATION FORESTS; VEGETATION CHANGES
AB Terrestrial biological atmospheric carbon dioxide removal (BCDR) through bioenergy with carbon capture and storage (BECS), afforestation/reforestation, and forest and soil management is a family of proposed climate change mitigation strategies. Very high sequestration potentials for these strategies have been reported, but there has been no systematic analysis of the potential ecological limits to and environmental impacts of implementation at the scale relevant to climate change mitigation. In this analysis, we identified site-specific aspects of land, water, nutrients, and habitat that will affect local project-scale carbon sequestration and ecological impacts. Using this framework, we estimated global-scale land and resource requirements for BCDR, implemented at a rate of 1 Pg C y(-1). We estimate that removing 1 Pg C y(-1) via tropical afforestation would require at least 7 x 10(6) ha y(-1) of land, 0.09 Tg y(-1) of nitrogen, and 0.2 Tg y(-1) of phosphorous, and would increase evapotranspiration from those lands by almost 50 %. Switchgrass BECS would require at least 2 x 10(8) ha of land (20 times U.S. area currently under bioethanol production) and 20 Tg y(-1) of nitrogen (20 % of global fertilizer nitrogen production), consuming 4 x 10(12) m(3) y(-1) of water. While BCDR promises some direct (climate) and ancillary (restoration, habitat protection) benefits, Pg C-scale implementation may be constrained by ecological factors, and may compromise the ultimate goals of climate change mitigation.
C1 [Smith, Lydia J.; Torn, Margaret S.] Univ Calif Berkeley, Berkeley, CA 94720 USA.
   [Smith, Lydia J.; Torn, Margaret S.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Earth Sci, Berkeley, CA 94720 USA.
RP Torn, MS (reprint author), Univ Calif Berkeley, Berkeley, CA 94720 USA.
EM MSTorn@lbl.gov
RI Torn, Margaret/D-2305-2015; Vaughn, Lydia/I-9108-2016
OI Vaughn, Lydia/0000-0001-9337-464X
FU Office of Science, Office of Biological and Environmental Research,
   Climate and Environmental Science Division, of the U.S. Department of
   Energy [DE-AC02-05CH11231]
FX We thank Robert Socolow and Massimo Tavoni for facilitating this project
   and reviewing drafts, John Harte and Michael Cohen for their thoughtful
   comments, and Andrew Jones for contributions to a presentation of this
   material. This work was supported by the Director, Office of Science,
   Office of Biological and Environmental Research, Climate and
   Environmental Science Division, of the U.S. Department of Energy under
   Contract No. DE-AC02-05CH11231.
NR 107
TC 20
Z9 22
U1 6
U2 93
PU SPRINGER
PI DORDRECHT
PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS
SN 0165-0009
J9 CLIMATIC CHANGE
JI Clim. Change
PD MAY
PY 2013
VL 118
IS 1
SI SI
BP 89
EP 103
DI 10.1007/s10584-012-0682-3
PG 15
WC Environmental Sciences; Meteorology & Atmospheric Sciences
SC Environmental Sciences & Ecology; Meteorology & Atmospheric Sciences
GA 130NZ
UT WOS:000317926500007
ER

PT J
AU Chockalingam, K
   Tonks, MR
   Hales, JD
   Gaston, DR
   Millett, PC
   Zhang, LZ
AF Chockalingam, K.
   Tonks, M. R.
   Hales, J. D.
   Gaston, D. R.
   Millett, P. C.
   Zhang, Liangzhe
TI Crystal plasticity with Jacobian-Free Newton-Krylov
SO COMPUTATIONAL MECHANICS
LA English
DT Article
DE Crystal plasticity; JFNK; Nonlinear; Implicit methods
ID COMPUTATIONAL STRUCTURAL DYNAMICS; TIME-INTEGRATION METHODS; IMPLICIT;
   POLYCRYSTALS; EQUATIONS; EVOLUTION; STRAINS; SYSTEMS; METALS; ALLOY
AB The objective of this work is to study potential benefits of solving crystal plasticity finite element method (CPFEM) implicit simulations using the Jacobian-Free Newton-Krylov (JFNK) technique. Implicit implementations of CPFEM are usually solved using Newton's method. However, the inherent non-linearity in the flow rule model that characterizes the crystal slip system deformation on occasions would require considerable effort to form the exact analytical Jacobian needed by Newton's method. In this paper we present an alternative using JFNK. As it does not require an exact Jacobian, JFNK can potentially decrease development time. JFNK approximates the effect of the Jacobian through finite differences of the residual vector, allowing modified formulations to be studied with relative ease. We show that the JFNK solution is identical to that obtained using Newton's method and produces quadratic convergence. We also find that preconditioning the JFNK solution with the elastic tensor provides the best computational efficiency.
C1 [Chockalingam, K.; Tonks, M. R.; Hales, J. D.; Gaston, D. R.; Millett, P. C.; Zhang, Liangzhe] Idaho Natl Lab, Idaho Falls, ID 83415 USA.
RP Chockalingam, K (reprint author), Idaho Natl Lab, POB 1625, Idaho Falls, ID 83415 USA.
EM Karthikeyan.Chockalingam@inl.gov
OI Hales, Jason/0000-0003-0836-0476
FU U.S. Department of Energy [DE-AC07-05ID14517]
FX The authors would like to thank Bulent Biner from Idaho National
   Laboratory for his suggestions and advice. This manuscript has been
   authored by Battelle Energy Alliance, LLC under Contract No.
   DE-AC07-05ID14517 with the U.S. Department of Energy. The United States
   Government retains and the publisher, by accepting the article for
   publication, acknowledges that the United States Government retains a
   nonexclusive, paid-up, irrevocable, worldwide license to publish or
   reproduce the published form of this manuscript, or allow others to do
   so, for United States Government purposes.
NR 25
TC 6
Z9 6
U1 0
U2 11
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 0178-7675
J9 COMPUT MECH
JI Comput. Mech.
PD MAY
PY 2013
VL 51
IS 5
BP 617
EP 627
DI 10.1007/s00466-012-0741-7
PG 11
WC Mathematics, Interdisciplinary Applications; Mechanics
SC Mathematics; Mechanics
GA 123WO
UT WOS:000317422600003
ER

PT J
AU van de Vossenberg, J
   Woebken, D
   Maalcke, WJ
   Wessels, HJCT
   Dutilh, BE
   Kartal, B
   Janssen-Megens, EM
   Roeselers, G
   Yan, J
   Speth, D
   Gloerich, J
   Geerts, W
   van der Biezen, E
   Pluk, W
   Francoijs, KJ
   Russ, L
   Lam, P
   Malfatti, SA
   Tringe, SG
   Haaijer, SCM
   Op den Camp, HJM
   Stunnenberg, HG
   Amann, R
   Kuypers, MMM
   Jetten, MSM
AF van de Vossenberg, Jack
   Woebken, Dagmar
   Maalcke, Wouter J.
   Wessels, Hans J. C. T.
   Dutilh, Bas E.
   Kartal, Boran
   Janssen-Megens, Eva M.
   Roeselers, Guus
   Yan, Jia
   Speth, Daan
   Gloerich, Jolein
   Geerts, Wim
   van der Biezen, Erwin
   Pluk, Wendy
   Francoijs, Kees-Jan
   Russ, Lina
   Lam, Phyllis
   Malfatti, Stefanie A.
   Tringe, Susannah Green
   Haaijer, Suzanne C. M.
   Op den Camp, Huub J. M.
   Stunnenberg, Henk G.
   Amann, Rudi
   Kuypers, Marcel M. M.
   Jetten, Mike S. M.
TI The metagenome of the marine anammox bacterium 'Candidatus Scalindua
   profunda' illustrates the versatility of this globally important
   nitrogen cycle bacterium
SO ENVIRONMENTAL MICROBIOLOGY
LA English
DT Article
ID ANAEROBIC AMMONIUM OXIDATION; MULTIPLE SEQUENCE ALIGNMENT;
   OXYGEN-MINIMUM ZONES; MICROBIAL GENE IDENTIFICATION; HYDRAZINE-OXIDIZING
   ENZYME; HYDROXYLAMINE OXIDOREDUCTASE; KUENENIA-STUTTGARTIENSIS;
   DISSIMILATORY FE(III); NITRATE REDUCTION; MULTIHEME PROTEIN
AB Anaerobic ammonium-oxidizing (anammox) bacteria are responsible for a significant portion of the loss of fixed nitrogen from the oceans, making them important players in the global nitrogen cycle. To date, marine anammox bacteria found in marine water columns and sediments worldwide belong almost exclusively to the Candidatus Scalindua' species, but the molecular basis of their metabolism and competitive fitness is presently unknown. We applied community sequencing of a marine anammox enrichment culture dominated by Candidatus Scalindua profunda' to construct a genome assembly, which was subsequently used to analyse the most abundant gene transcripts and proteins. In the S.profunda assembly, 4756 genes were annotated, and only about half of them showed the highest identity to the only other anammox bacterium of which a metagenome assembly had been constructed so far, the freshwater Candidatus Kuenenia stuttgartiensis'. In total, 2016 genes of S.profunda could not be matched to the K.stuttgartiensis metagenome assembly at all, and a similar number of genes in K.stuttgartiensis could not be found in S.profunda. Most of these genes did not have a known function but 98 expressed genes could be attributed to oligopeptide transport, amino acid metabolism, use of organic acids and electron transport. On the basis of the S.profunda metagenome, and environmental metagenome data, we observed pronounced differences in the gene organization and expression of important anammox enzymes, such as hydrazine synthase (HzsAB), nitrite reductase (NirS) and inorganic nitrogen transport proteins. Adaptations of Scalindua to the substrate limitation of the ocean may include highly expressed ammonium, nitrite and oligopeptide transport systems and pathways for the transport, oxidation, and assimilation of small organic compounds that may allow a more versatile lifestyle contributing to the competitive fitness of Scalindua in the marine realm.
C1 [van de Vossenberg, Jack; Maalcke, Wouter J.; Kartal, Boran; Roeselers, Guus; Yan, Jia; Speth, Daan; Geerts, Wim; van der Biezen, Erwin; Russ, Lina; Haaijer, Suzanne C. M.; Op den Camp, Huub J. M.; Jetten, Mike S. M.] Radboud Univ Nijmegen, Dept Microbiol, IWWR, NL-6525 AJ Nijmegen, Netherlands.
   [Woebken, Dagmar; Lam, Phyllis; Amann, Rudi; Kuypers, Marcel M. M.] Max Planck Inst Marine Microbiol, Bremen, Germany.
   [Wessels, Hans J. C. T.; Gloerich, Jolein; Pluk, Wendy] Radboud Univ Nijmegen, Lab Genet Endocrine & Metab Dis, Nijmegen Ctr Mitochondrial Disorders, Nijmegen Prote Facil,Dept Lab Med,Med Ctr, NL-6525 AJ Nijmegen, Netherlands.
   [Dutilh, Bas E.] Radboud Univ Nijmegen, Med Ctr, CMBI, NL-6525 AJ Nijmegen, Netherlands.
   [Janssen-Megens, Eva M.; Francoijs, Kees-Jan; Stunnenberg, Henk G.] Radboud Univ Nijmegen, Nijmegen Ctr Mol Life Sci, Dept Mol Biol, NL-6525 AJ Nijmegen, Netherlands.
   [Malfatti, Stefanie A.; Tringe, Susannah Green] DOE Joint Genome Inst, Walnut Creek, CA 94598 USA.
   [Jetten, Mike S. M.] Delft Univ Technol, Dept Biotechnol, Delft, Netherlands.
RP Jetten, MSM (reprint author), Radboud Univ Nijmegen, Dept Microbiol, IWWR, NL-6525 AJ Nijmegen, Netherlands.
EM m.jetten@science.ru.nl
RI Wessels, Hans/P-6248-2015; Dutilh, Bas/B-9719-2011; Lam,
   Phyllis/D-9574-2011; Amann, Rudolf/C-6534-2014; Kartal,
   Boran/D-2488-2014; Woebken, Dagmar/A-4447-2013; Stunnenberg,
   Hendrik/D-6875-2012; Jetten, Mike/B-8834-2011; Op den Camp,
   Huub/F-5114-2011; Gloerich, Jolein/L-4327-2015
OI Speth, Daan/0000-0002-2361-5935; Gloerich, Jolein/0000-0001-5976-8426;
   van de Vossenberg, Jack/0000-0003-4497-6155; Woebken,
   Dagmar/0000-0002-1314-9926; Wessels, Hans/0000-0001-5957-3127; Dutilh,
   Bas/0000-0003-2329-7890; Roeselers, Guus/0000-0002-4725-6105; Lam,
   Phyllis/0000-0003-2067-171X; Amann, Rudolf/0000-0002-0846-7372; Tringe,
   Susannah/0000-0001-6479-8427; Jetten, Mike/0000-0002-4691-7039; Op den
   Camp, Huub/0000-0003-1990-9030; 
FU Netherlands Organization for Scientific Research NWO (ALW) [853.00.012];
   ALW VENI; DARWIN; SCUT; NGI Horizon; ERC AdG [232937]
FX Keygene is gratefully acknowledged for the initial pyrosequencing runs
   on the DNA of the density gradient purified cells. Ben Polman, Radboud
   University C&CZ, is thanked for help with Perl scripts. Marc Strous is
   thanked for discussion. J.v.d.V. was supported by the Netherlands
   Organization for Scientific Research NWO (ALW Grant 853.00.012), B. K.
   by an ALW VENI grant, W. M. and S. H. by DARWIN grant, J.Y. by a SCUT
   grant, B. D. by a NGI Horizon grant, and L. R., G. R. and M.S.M.J. by
   ERC AdG Grant 232937.
NR 74
TC 63
Z9 64
U1 11
U2 180
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 1462-2912
J9 ENVIRON MICROBIOL
JI Environ. Microbiol.
PD MAY
PY 2013
VL 15
IS 5
SI SI
BP 1275
EP 1289
DI 10.1111/j.1462-2920.2012.02774.x
PG 15
WC Microbiology
SC Microbiology
GA 132BD
UT WOS:000318041800004
PM 22568606
ER

PT J
AU Scott, MA
   Segers, A
AF Scott, Mark A.
   Segers, Andrew
TI A GLOBAL ELECTRICAL SAFETY PROGRAM The challenge of developing a
   universal safety system in a multinational company
SO IEEE INDUSTRY APPLICATIONS MAGAZINE
LA English
DT Article
C1 [Scott, Mark A.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
RP Scott, MA (reprint author), Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
EM mascott@ieee.org
NR 15
TC 0
Z9 0
U1 0
U2 0
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 1077-2618
J9 IEEE IND APPL MAG
JI IEEE Ind. Appl. Mag.
PD MAY-JUN
PY 2013
VL 19
IS 3
BP 27
EP 33
DI 10.1109/MIAS.2012.2215656
PG 7
WC Engineering, Industrial; Engineering, Electrical & Electronic
SC Engineering
GA 128NK
UT WOS:000317775700011
ER

PT J
AU Pittman, CT
   Guido, JM
   Hamelin, EI
   Blake, TA
   Johnson, RC
AF Pittman, Christopher T.
   Guido, John M.
   Hamelin, Elizabeth I.
   Blake, Thomas A.
   Johnson, Rudolph C.
TI Analysis of a Ricin Biomarker, Ricinine, in 989 Individual Human Urine
   Samples
SO JOURNAL OF ANALYTICAL TOXICOLOGY
LA English
DT Article
ID COMMUNIS; QUANTIFICATION; SPECTROMETRY; TOXICOSIS; MARKER; FOOD
AB Ricinine (3-cyano-4-methoxy-N-methyl-2-pyridone) is a urinary biomarker that can be measured to confirm human exposure to castor bean products such as ricin. Because many consumer products contain castor oil, another castor bean product, ricinine may be detectable in the general population. The following study characterized urinary ricinine concentrations from 989 individuals who were presumed to be unexposed to ricin. An automated diagnostic method was utilized to simplify the analysis of this large sample set. Sample preparation included a 96-well polystyrene divinylbenzene high throughput extraction and preconcentration step. Purified samples were analyzed by an efficient dual column, reversed-phase liquid chromatography separation and C-13-isotope dilution tandem mass spectrometry. In this convenience sample set, only 1.2 of the urine specimens had detectable amounts of ricinine, randomly distributed between 0.186 and 4.15 ng/mL.
C1 [Pittman, Christopher T.; Hamelin, Elizabeth I.; Blake, Thomas A.; Johnson, Rudolph C.] Ctr Dis Control & Prevent, Div Sci Lab, Natl Ctr Environm Hlth, Atlanta, GA 30341 USA.
   [Guido, John M.] Oak Ridge Inst Sci Educ, Oak Ridge, TN 37831 USA.
RP Johnson, RC (reprint author), Ctr Dis Control & Prevent, Div Sci Lab, Natl Ctr Environm Hlth, 4770 Buford Highway,MS F44, Atlanta, GA 30341 USA.
EM rmj6@cdc.gov
OI Blake, Thomas/0000-0001-8536-9998
FU Intramural CDC HHS [CC999999]
NR 25
TC 3
Z9 4
U1 1
U2 19
PU OXFORD UNIV PRESS INC
PI CARY
PA JOURNALS DEPT, 2001 EVANS RD, CARY, NC 27513 USA
SN 0146-4760
EI 1945-2403
J9 J ANAL TOXICOL
JI J. Anal. Toxicol.
PD MAY
PY 2013
VL 37
IS 4
BP 237
EP 240
DI 10.1093/jat/bkt010
PG 4
WC Chemistry, Analytical; Toxicology
SC Chemistry; Toxicology
GA 124AF
UT WOS:000317434100008
PM 23471955
ER

PT J
AU Baxter, LK
   Burke, J
   Lunden, M
   Turpin, BJ
   Rich, DQ
   Thevenet-Morrison, K
   Hodas, N
   Ozkaynak, H
AF Baxter, Lisa K.
   Burke, Janet
   Lunden, Melissa
   Turpin, Barbara J.
   Rich, David Q.
   Thevenet-Morrison, Kelly
   Hodas, Natasha
   Oezkaynak, Haluk
TI Influence of human activity patterns, particle composition, and
   residential air exchange rates on modeled distributions of PM2.5
   exposure compared with central-site monitoring data
SO JOURNAL OF EXPOSURE SCIENCE AND ENVIRONMENTAL EPIDEMIOLOGY
LA English
DT Article
DE human activity patterns; particle composition; air exchange rates;
   exposure models
ID FINE PARTICULATE MATTER; UNITED-STATES; AMBIENT PM2.5; POLLUTION;
   HEALTH; TIME; PHILADELPHIA; VARIABILITY; REGRESSION; LEAKAGE
AB Central-site monitors do not account for factors such as outdoor-to-indoor transport and human activity patterns that influence personal exposures to ambient fine-particulate matter (PM2.5). We describe and compare different ambient PM2.5 exposure estimation approaches that incorporate human activity patterns and time-resolved location-specific particle penetration and persistence indoors. Four approaches were used to estimate exposures to ambient PM2.5 for application to the New Jersey Triggering of Myocardial Infarction Study. These include: Tier 1, central-site PM2.5 mass; Tier 2A, the Stochastic Human Exposure and Dose Simulation (SHEDS) model using literature-based air exchange rates (AERs); Tier 2B, the Lawrence Berkeley National Laboratory (LBNL) Aerosol Penetration and Persistence (APP) and Infiltration models; and Tier 3, the SHEDS model where AERs were estimated using the LBNL Infiltration model. Mean exposure estimates from Tier 2A, 2B, and 3 exposure modeling approaches were lower than Tier 1 central-site PM2.5 mass. Tier 2A estimates differed by season but not across the seven monitoring areas. Tier 2B and 3 geographical patterns appeared to be driven by AERs, while seasonal patterns appeared to be due to variations in PM composition and time activity patterns. These model results demonstrate heterogeneity in exposures that are not captured by the central-site monitor. Journal of Exposure Science and Environmental Epidemiology (2013) 23, 241-247; doi:10.1038/jes.2012.118; published online 16 January 2013
C1 [Baxter, Lisa K.; Burke, Janet; Oezkaynak, Haluk] US EPA, Natl Exposure Res Lab, Res Triangle Pk, NC 27711 USA.
   [Lunden, Melissa] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
   [Turpin, Barbara J.; Hodas, Natasha] Univ Rochester, Med Ctr, Rochester, NY 14642 USA.
   [Rich, David Q.; Thevenet-Morrison, Kelly] Rutgers State Univ, New Brunswick, NJ 08903 USA.
RP Baxter, LK (reprint author), US EPA, Natl Exposure Res Lab, 109 TW Alexander Dr,MD E205-2, Res Triangle Pk, NC 27711 USA.
EM baxter.lisa@epa.gov
RI Turpin, Barbara /D-8346-2012
FU U.S. Environmental Protection Agency [CR-83407201-0]; NIEHS [NIEHS
   P30ES005022]; New Jersey Agricultural Experiment Station; Graduate
   Assistance in Areas of National Need Fellowship; EPA STAR Fellowship; US
   Environmental Protection Agency through its Office of Research and
   Development [CR-83407201-0]
FX This research was funded in part by the U.S. Environmental Protection
   Agency (Cooperative Agreement CR-83407201-0), NIEHS-sponsored UMDNJ
   Center for Environmental Exposures and Disease (NIEHS P30ES005022), and
   the New Jersey Agricultural Experiment Station. Natasha Hodas was
   supported by a Graduate Assistance in Areas of National Need Fellowship
   and an EPA STAR Fellowship. Although this work was reviewed by EPA and
   approved for publication, it may not necessarily reflect official Agency
   policy. We thank Kristin Isaacs of the US EPA's National Exposure
   Laboratory and Tom Long of the US EPA's National Center for
   Environmental Assessment for their scientific guidance on this
   manuscript.; The US Environmental Protection Agency through its Office
   of Research and Development funded and collaborated the research
   described here under Cooperative Agreement CR-83407201-0 to Rutgers
   University. It has been subjected to Agency review and approved for
   publication.
NR 32
TC 18
Z9 18
U1 5
U2 84
PU NATURE PUBLISHING GROUP
PI NEW YORK
PA 75 VARICK ST, 9TH FLR, NEW YORK, NY 10013-1917 USA
SN 1559-0631
J9 J EXPO SCI ENV EPID
JI J. Expo. Sci. Environ. Epidemiol.
PD MAY-JUN
PY 2013
VL 23
IS 3
BP 241
EP 247
DI 10.1038/jes.2012.118
PG 7
WC Environmental Sciences; Public, Environmental & Occupational Health;
   Toxicology
SC Environmental Sciences & Ecology; Public, Environmental & Occupational
   Health; Toxicology
GA 125QL
UT WOS:000317556300003
PM 23321856
ER

PT J
AU Chung, DW
   Farkas, J
   Westpheling, J
AF Chung, Daehwan
   Farkas, Joel
   Westpheling, Janet
TI Detection of a novel active transposable element in Caldicellulosiruptor
   hydrothermalis and a new search for elements in this genus
SO JOURNAL OF INDUSTRIAL MICROBIOLOGY & BIOTECHNOLOGY
LA English
DT Article
DE Transposition; Thermophilic anaerobes; Caldicellulosiruptor; IS element;
   ISCahy1; ISCbe4
ID BACTERIAL INSERTION SEQUENCES; COMPLETE GENOME SEQUENCE; THERMOPHILUM
   DSM 6725; CLOSTRIDIUM-THERMOCELLUM; BIOMASS
AB We show that a previously annotated hypothetical protein is the transposase of a new and active IS element, ISCahy1, widespread in Caldicellulosiruptor species. Transposition generated an 11-bp direct repeat at the insertion site in Caldicellulosiruptor hydrothermalis, suggesting a cut-and-paste mechanism. The discovery of an active insertion sequence in Caldicellulosiruptor species led to a survey of potential IS elements in the genome sequences of eight Caldicellulosiruptor species that identified several new elements, including one novel to this genus.
C1 [Chung, Daehwan; Farkas, Joel; Westpheling, Janet] Univ Georgia, Dept Genet, Athens, GA 30602 USA.
   [Chung, Daehwan; Farkas, Joel; Westpheling, Janet] Oak Ridge Natl Lab, Dept Energy, BioEnergy Sci Ctr, Oak Ridge, TN USA.
RP Westpheling, J (reprint author), Univ Georgia, Dept Genet, Athens, GA 30602 USA.
EM janwest@uga.edu
FU BioEnergy Science Center; U.S. Department of Energy Bioenergy Research
   Center; Office of Biological and Environmental Research in the DOE
   Office of Science; predoctoral Graduate Training In Genetics grant [NIH
   5T32GM007103-30]
FX We thank Lee Lynd, Dan Olson, and Adam Guss for sharing unpublished
   results, Jenna Oberstaller for assistance in genome sequence analysis,
   and Minseok Cha and Jennifer Copeland for helpful discussions during the
   course of the work. This work was supported by The BioEnergy Science
   Center supported by a U.S. Department of Energy Bioenergy Research
   Center supported by the Office of Biological and Environmental Research
   in the DOE Office of Science. JF was supported in part by a predoctoral
   Graduate Training In Genetics grant (NIH 5T32GM007103-30) to the
   Genetics Department of the University of Georgia.
NR 22
TC 5
Z9 5
U1 0
U2 9
PU SPRINGER HEIDELBERG
PI HEIDELBERG
PA TIERGARTENSTRASSE 17, D-69121 HEIDELBERG, GERMANY
SN 1367-5435
J9 J IND MICROBIOL BIOT
JI J. Ind. Microbiol. Biotechnol.
PD MAY
PY 2013
VL 40
IS 5
BP 517
EP 521
DI 10.1007/s10295-013-1244-z
PG 5
WC Biotechnology & Applied Microbiology
SC Biotechnology & Applied Microbiology
GA 126WH
UT WOS:000317652200012
PM 23475285
ER

PT J
AU Kang, HC
   Wakabayashi, Y
   Jen, KY
   Mao, JH
   Zoumpourlis, V
   Del Rosario, R
   Balmain, A
AF Kang, Hio Chung
   Wakabayashi, Yuichi
   Jen, Kuang-Yu
   Mao, Jian-Hua
   Zoumpourlis, Vassilis
   Del Rosario, Reyno
   Balmain, Allan
TI Ptch1 Overexpression Drives Skin Carcinogenesis and Developmental
   Defects in K14Ptch(FVB) Mice
SO JOURNAL OF INVESTIGATIVE DERMATOLOGY
LA English
DT Article
ID INTERSPECIFIC HYBRID MICE; SONIC HEDGEHOG; TUMOR SUSCEPTIBILITY; HUMAN
   HOMOLOG; PATCHED GENE; STEM-CELLS; CARCINOMAS; DROSOPHILA; GROWTH;
   CANCER
AB Ptch1 is a key regulator of embryonic development, acting through the sonic hedgehog (SHH) signaling pathway. Ptch1 is best known as a tumor suppressor, as germline or somatic mutations in Ptch1 lead to the formation of skin basal cell carcinomas. Here we show that Ptch1 also acts as a lineage-dependent oncogene, as overexpression of Ptch1 in adult skin in K14Ptch(FVB) transgenic mice synergizes with chemically induced Hras mutations to promote squamous carcinoma development. These effects were not because of aberrant activation of SHH signaling by the K14Ptch(FVB) transgene, as developmental defects in the highest expressing transgenic lines were consistent with the inhibition of this pathway. Carcinomas from K14Ptch(FVB) transgenic mice had only a small number of nonproliferative Ptch1 transgene-positive cells, suggesting that the Ptch1 transgene is not required for tumor maintenance, but may have a critical role in cell-fate determination at the initiation stage. Journal of Investigative Dermatology (2013) 133, 1311-1320; doi:10.1038/jid.2012.419; published online 6 December 2012
C1 [Kang, Hio Chung; Del Rosario, Reyno; Balmain, Allan] Univ Calif San Francisco, Ctr Comprehens Canc, San Francisco, CA 94158 USA.
   [Wakabayashi, Yuichi] Chiba Canc Ctr, Res Inst, Div Expt Anim Res, Chiba 2608717, Japan.
   [Jen, Kuang-Yu] Univ Calif San Francisco, Dept Pathol, San Francisco, CA 94158 USA.
   [Mao, Jian-Hua] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Life Sci, Berkeley, CA 94720 USA.
   [Zoumpourlis, Vassilis] Natl Hellen Res Fdn, Inst Biol Med Chem & Biotechnol, Athens, Greece.
RP Balmain, A (reprint author), Univ Calif San Francisco, Helen Diller Family Comprehens Canc Ctr, San Francisco, CA 94158 USA.
EM abalmain@cc.ucsf.edu
FU National Cancer Institute Mouse Models of Human Cancer Consortium [2U01
   CA08422-06]; US National Institute of Arthritis and Musculoskeletal and
   Skin Diseases, National Institutes of Health [5P01AR050440]; Barbara
   Bass Bakar Chair of Cancer Genetics
FX These studies were supported by National Cancer Institute Mouse Models
   of Human Cancer Consortium grant 2U01 CA08422-06 to AB and Program
   Project Grant (PPG) 5P01AR050440 from the US National Institute of
   Arthritis and Musculoskeletal and Skin Diseases, National Institutes of
   Health. AB acknowledges support from the Barbara Bass Bakar Chair of
   Cancer Genetics.
NR 33
TC 12
Z9 12
U1 3
U2 15
PU NATURE PUBLISHING GROUP
PI NEW YORK
PA 75 VARICK ST, 9TH FLR, NEW YORK, NY 10013-1917 USA
SN 0022-202X
EI 1523-1747
J9 J INVEST DERMATOL
JI J. Invest. Dermatol.
PD MAY
PY 2013
VL 133
IS 5
BP 1311
EP 1320
DI 10.1038/jid.2012.419
PG 10
WC Dermatology
SC Dermatology
GA 127KV
UT WOS:000317698800028
PM 23223138
ER

PT J
AU Sharova, TY
   Ahmed, MI
   Han, H
   Poterlowicz, K
   Mostoslavsky, G
   Kohwi-Shigematsu, T
   Botchkarev, VA
   Sharov, AA
AF Sharova, T. Y.
   Ahmed, M. I.
   Han, H.
   Poterlowicz, K.
   Mostoslavsky, G.
   Kohwi-Shigematsu, T.
   Botchkarev, V. A.
   Sharov, A. A.
TI Special AT-rich binding protein Satb1 controls re-organization of
   lineage-specific differentiation programs during keratinocyte
   reprogramming towards the induced pluripotent state
SO JOURNAL OF INVESTIGATIVE DERMATOLOGY
LA English
DT Meeting Abstract
CT International Investigative Dermatology Meeting
CY MAY 08-11, 2013
CL Edinburgh, SCOTLAND
SP European Soc Dermatol Res, Japanese Soc Investigat Dermatol, Soc Investigat Dermatol
C1 [Sharova, T. Y.; Botchkarev, V. A.; Sharov, A. A.] Boston Univ, Sch Med, Boston, MA 02118 USA.
   [Mostoslavsky, G.] Boston Univ, Sch Med, Ctr Regenerat Med, Boston, MA 02118 USA.
   [Han, H.; Kohwi-Shigematsu, T.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
   [Ahmed, M. I.; Poterlowicz, K.; Botchkarev, V. A.] Univ Bradford, Ctr Skin Sci, Bradford BD7 1DP, W Yorkshire, England.
NR 0
TC 0
Z9 0
U1 0
U2 1
PU NATURE PUBLISHING GROUP
PI NEW YORK
PA 75 VARICK ST, 9TH FLR, NEW YORK, NY 10013-1917 USA
SN 0022-202X
J9 J INVEST DERMATOL
JI J. Invest. Dermatol.
PD MAY
PY 2013
VL 133
SU 1
MA 1445
BP S246
EP S246
PG 1
WC Dermatology
SC Dermatology
GA 127KW
UT WOS:000317698901737
ER

PT J
AU Tenchine, D
   Pialla, D
   Fanning, TH
   Thomas, JW
   Chellapandi, P
   Shvetsov, Y
   Maas, L
   Jeong, HY
   Mikityuk, K
   Chenu, A
   Mochizuki, H
   Monti, S
AF Tenchine, D.
   Pialla, D.
   Fanning, T. H.
   Thomas, J. W.
   Chellapandi, P.
   Shvetsov, Y.
   Maas, L.
   Jeong, H. -Y.
   Mikityuk, K.
   Chenu, A.
   Mochizuki, H.
   Monti, S.
TI International benchmark on the natural convection test in Phenix reactor
SO NUCLEAR ENGINEERING AND DESIGN
LA English
DT Article
ID CODE
AB The French Phenix sodium cooled fast reactor (SFR) started operation in 1973 and was stopped in 2009. Before the reactor was definitively shutdown, several final tests were planned and performed, including a natural convection test in the primary circuit. During this natural convection test, the heat rejection provided by the steam generators was disabled, followed several minutes later by reactor scram and coast-down of the primary pumps. The International Atomic Energy Agency (IAEA) launched a Coordinated Research Project (CRP) named "control rod withdrawal and sodium natural circulation tests performed during the Phenix end-of-life experiments". The overall purpose of the CRP was to improve the Member States' analytical capabilities in the field of SFR safety. An international benchmark on the natural convection test was organized with "blind" calculations in a first step, then "post-test" calculations and sensitivity studies compared with reactor measurements. Eight organizations from seven Member States took part in the benchmark: ANL (USA), CEA (France), IGCAR (India), IPPE (Russian Federation), IRSN (France), KAERI (Korea), PSI (Switzerland) and University of Fukui (Japan). Each organization performed computations and contributed to the analysis and global recommendations. This paper summarizes the findings of the CRP benchmark exercise associated with the Phenix natural convection test, including blind calculations, post-test calculations and comparisons with measured data. General comments and recommendations are pointed out to improve future simulations of natural convection in SFRs. (C) 2013 Elsevier B.V. All rights reserved.
C1 [Tenchine, D.; Pialla, D.] CEA, DEN, STMF DM2S, F-38054 Grenoble, France.
   [Fanning, T. H.; Thomas, J. W.] ANL, Argonne, IL 60439 USA.
   [Chellapandi, P.] IGCAR, Kalpakkam 603102, Tamil Nadu, India.
   [Shvetsov, Y.] IPPE, Obninsk 249033, Russia.
   [Maas, L.] IRSN, F-92262 Fontenay Aux Roses, France.
   [Jeong, H. -Y.] KAERI, Taejon, South Korea.
   [Mikityuk, K.; Chenu, A.] PSI, CH-5232 Villigen, Switzerland.
   [Mochizuki, H.] Univ Fukui, Tsuruga, Fukui 9140055, Japan.
   [Monti, S.] IAEA, A-1400 Vienna, Austria.
RP Tenchine, D (reprint author), CEA, DEN, STMF DM2S, F-38054 Grenoble, France.
EM denis.tenchine@cea.fr
RI Chenu, Aurelia/C-1301-2015
OI Chenu, Aurelia/0000-0002-4461-8289
NR 12
TC 7
Z9 7
U1 1
U2 8
PU ELSEVIER SCIENCE SA
PI LAUSANNE
PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND
SN 0029-5493
J9 NUCL ENG DES
JI Nucl. Eng. Des.
PD MAY
PY 2013
VL 258
BP 189
EP 198
DI 10.1016/j.nucengdes.2013.02.010
PG 10
WC Nuclear Science & Technology
SC Nuclear Science & Technology
GA 128YD
UT WOS:000317804700020
ER

PT J
AU Stratakis, D
AF Stratakis, Diktys
TI Studies of the high-performance muon capture front-end lattice for the
   IDS Neutrino Factory
SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS
   SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
LA English
DT Article
DE Muon accelerator; Neutrino factory; Ionization cooling
ID PHYSICS
AB It is believed that a neutrino factory would deliver unparalleled performance in studying neutrino mixing and would provide tremendous sensitivity to new physics in the neutrino sector. A neutrino factory employs muons which are produced, collected, accelerated and then stored so that their eventual decay produces an intense neutrino beam. A key challenge is that the initial muon beam occupies a region in phase space that vastly exceeds the acceptance of the downstream accelerators. Here we study a novel method to manipulate the longitudinal and transverse phase space with the purpose of collecting and cooling a muon beam. In this method, a set of properly tuned if cavities captures the muon beams into strings of bunches and aligns them to nearly equal central energies, and a following set of rf cavities with absorbers cools them by a factor of three in transverse emittance. The sensitivity in performance of the channel against key parameters such as the number of cavities, accelerating gradient and magnetic field is analyzed. Finally, the lattice tolerance to positioning errors of various lattice components is systematically examined. (C) 2013 Elsevier B.V. All rights reserved.
C1 Brookhaven Natl Lab, Upton, NY 11973 USA.
RP Stratakis, D (reprint author), Brookhaven Natl Lab, Upton, NY 11973 USA.
EM diktys@bnl.gov
FU US Department of Energy [DE-AC02-98CH10886]
FX The authors are grateful to J.S. Berg, J.C. Gallardo, H. Kirk, and D.
   Neuffer for useful discussions. This work is supported by the US
   Department of Energy, Contract No. DE-AC02-98CH10886.
NR 27
TC 0
Z9 0
U1 0
U2 2
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0168-9002
J9 NUCL INSTRUM METH A
JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc.
   Equip.
PD MAY 1
PY 2013
VL 709
BP 1
EP 7
DI 10.1016/j.nima.2013.01.006
PG 7
WC Instruments & Instrumentation; Nuclear Science & Technology; Physics,
   Nuclear; Physics, Particles & Fields
SC Instruments & Instrumentation; Nuclear Science & Technology; Physics
GA 128UB
UT WOS:000317794100001
ER

PT J
AU Dewberry, RA
   Gibbs, KM
   Couture, AH
AF Dewberry, R. A.
   Gibbs, K. M.
   Couture, A. H.
TI Backscatter gauge description for inspection of neutron absorber content
SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS
   SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
LA English
DT Article
DE Dual He-3 detector; Boron content; Neutron backscatter
AB This paper describes design, calibration, and testing of a dual He-3 detector neutron bacicscatter gauge for use in the Savannah River Site Mixed Oxide Fuel project. The gauge is demonstrated to measure boron content and uniformity in concrete slabs used in the facility construction. (C) 2013 Elsevier B.V. All rights reserved.
C1 [Dewberry, R. A.; Gibbs, K. M.; Couture, A. H.] Savannah River Natl Lab, Aiken, SC 29808 USA.
RP Dewberry, RA (reprint author), Savannah River Natl Lab, Aiken, SC 29808 USA.
EM raymond.dewberry@srnl.doe.gov
NR 9
TC 1
Z9 1
U1 0
U2 4
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0168-9002
J9 NUCL INSTRUM METH A
JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc.
   Equip.
PD MAY 1
PY 2013
VL 709
BP 12
EP 16
DI 10.1016/j.nima.2013.01.012
PG 5
WC Instruments & Instrumentation; Nuclear Science & Technology; Physics,
   Nuclear; Physics, Particles & Fields
SC Instruments & Instrumentation; Nuclear Science & Technology; Physics
GA 128UB
UT WOS:000317794100003
ER

PT J
AU Aguayo, E
   Busch, M
   Daniels, R
   Fast, JE
   Green, MP
   Reid, DJ
AF Aguayo, E.
   Busch, M.
   Daniels, R.
   Fast, J. E.
   Green, M. P.
   Reid, D. J.
TI The design of an ultra-low background thermosyphon for the Majorana
   Demonstrator
SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS
   SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
LA English
DT Article
DE Detector arrays; Ultra-low background cryogenic systems; Thermosyphon;
   High-purity germanium (HPGe); Neutrinoless double-beta decay
AB The MAJORANA DEMONSTRATOR (MJD) is an ultra-low background neutrinoless double-beta decay (Ov beta beta) experiment that will deploy up to 40 kg of high purity germanium detectors (HPGe). The goal of this experiment is to demonstrate the feasibility of building a detector array with less than 1 event/ton year in a 4 keV region of interest around the Ov beta beta signal. HPGe diodes, when used as ionizing radiation detectors, need to be maintained at a temperature close to that of liquid nitrogen (77 K). This work describes the results of research and development toward a cryogenic system capable of meeting the ultra-low background requirements while providing the required cryogenic cooling capacity of 15-30 W. This paper shows the experimental results obtained using a two-phase horizontal thermosyphon using nitrogen as the working fluid. The cold tests show that the proposed thermosyphon has sufficient cooling power to handle the heat load of an MJD module. Results for the temperature gradient across the thermosyphon, cooling capacity, and design considerations demonstrate that the thermosyphon can effectively remove the calculated heat load of each module of the experiment. Published by Elsevier B.V.
C1 [Aguayo, E.; Fast, J. E.; Reid, D. J.] Pacific NW Natl Lab, Richland, WA 99352 USA.
   [Busch, M.] Duke Univ, Dept Phys, Durham, NC 27705 USA.
   [Busch, M.; Green, M. P.] Triangle Univ Nucl Lab, Durham, NC 27705 USA.
   [Daniels, R.] ENG Engn Inc, Raleigh, NC 27601 USA.
   [Green, M. P.] Univ N Carolina, Dept Phys & Astron, Chapel Hill, NC 27599 USA.
RP Aguayo, E (reprint author), MSIN J4-60,902 Battelle Blvd,POB 999, Richland, WA 99352 USA.
EM ertanito@gmail.com
OI Green, Matthew/0000-0002-1958-8030
FU DOE-NP [DE-FG02-97ER41041]; NSF [PHY-0705014]; State of North Carolina
   [PNNL-SA-88629]
FX The authors acknowledge Dr. R.G. Hamish Robertson of the University of
   Washington for suggesting the idea of employing a thermosyphon system
   for the MAJORANA DEMONSTRATOR. The authors gratefully acknowledge the
   support of DOE-NP under Grant no. DE-FG02-97ER41041, the NSF under Grant
   no. PHY-0705014, and the State of North Carolina, PNNL-SA-88629.
NR 5
TC 5
Z9 5
U1 0
U2 7
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0168-9002
J9 NUCL INSTRUM METH A
JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc.
   Equip.
PD MAY 1
PY 2013
VL 709
BP 17
EP 21
DI 10.1016/j.nima.2012.11.191
PG 5
WC Instruments & Instrumentation; Nuclear Science & Technology; Physics,
   Nuclear; Physics, Particles & Fields
SC Instruments & Instrumentation; Nuclear Science & Technology; Physics
GA 128UB
UT WOS:000317794100004
ER

PT J
AU Beeman, JW
   Gentils, A
   Giuliani, A
   Mancuso, M
   Pessina, G
   Plantevin, O
   Rusconi, C
AF Beeman, J. W.
   Gentils, A.
   Giuliani, A.
   Mancuso, M.
   Pessina, G.
   Plantevin, O.
   Rusconi, C.
TI Effect of SiO2 coating in bolometric Ge light detectors for rare event
   searches
SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS
   SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
LA English
DT Article
DE Detectors of radiation; Scintillating bolometers; Double beta decay
ID DOUBLE-BETA-DECAY; DARK-MATTER SEARCH; SCINTILLATING BOLOMETER;
   REFRACTIVE-INDEX; WIMP SEARCH; NEUTRINOS; CRYSTALS; PHYSICS; MASS
AB In germanium-based light detectors for scintillating bolometers, a SiO2 anti-reflective coating is often applied on the side of the germanium wafer exposed to light with the aim to improve its light collection efficiency. In this paper, we report about a measurement, performed in the temperature range 25-35 mK, of the light-collection increase obtained thanks to this method, which resulted to be of the order of 20%. The procedure followed has been carefully selected in order to minimize systematic effects. The employed light sources have the same spectral features (peaking at similar to 630 nm wavelength) that will characterize future neutrinoless double beta decay experiments on the isotope Se-82 and based on ZnSe crystals, such as LUCIFER. The coupling between source and light detector reproduces the configuration used in scintillating bolometers. The present measurement clarifies the role of SiO2 coating and describes a method and a set-up that can be extended to the study of other types of coatings and luminescent materials. (C) 2013 Elsevier B.V. All rights reserved.
C1 [Beeman, J. W.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
   [Gentils, A.; Giuliani, A.; Plantevin, O.] CNRS, Ctr Spectrometrie Nucl & Spectrometrie Masse, F-91405 Orsay, France.
   [Gentils, A.; Giuliani, A.; Plantevin, O.] Univ Paris 11, F-91405 Orsay, France.
   [Giuliani, A.; Mancuso, M.; Rusconi, C.] Univ Insubria, Dipartimento Sci & Alta Tecnol, I-22100 Como, Italy.
   [Giuliani, A.; Mancuso, M.; Pessina, G.; Rusconi, C.] Ist Nazl Fis Nucl, Sez Milano Bicocca, I-20126 Milan, Italy.
   [Pessina, G.] Univ Milano Bicocca, Dipartimento Fis, I-20126 Milan, Italy.
RP Giuliani, A (reprint author), CNRS, Ctr Spectrometrie Nucl & Spectrometrie Masse, F-91405 Orsay, France.
EM andrea.giuliani@csnsm.in2p3.fr
OI Pessina, Gianluigi Ezio/0000-0003-3700-9757
FU European Research Council under the EU Seventh Framework Programme (ERC
   Grant) [247115]
FX The work here described was performed within the project LUCIFER, funded
   by the European Research Council under the EU Seventh Framework
   Programme (ERC Grant Agreement No. 247115). We thank loan Dafinei for
   providing us with the ZnSe slabs used to make the light sources.
NR 32
TC 9
Z9 9
U1 1
U2 9
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0168-9002
EI 1872-9576
J9 NUCL INSTRUM METH A
JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc.
   Equip.
PD MAY 1
PY 2013
VL 709
BP 22
EP 28
DI 10.1016/j.nima.2013.01.019
PG 7
WC Instruments & Instrumentation; Nuclear Science & Technology; Physics,
   Nuclear; Physics, Particles & Fields
SC Instruments & Instrumentation; Nuclear Science & Technology; Physics
GA 128UB
UT WOS:000317794100005
ER

PT J
AU Akerib, DS
   Bai, X
   Bedikian, S
   Bernstein, A
   Bolozdynya, A
   Bradley, A
   Cahn, SB
   Carr, D
   Chapman, JJ
   Clark, K
   Classen, T
   Curioni, A
   Dahl, CE
   Dazeley, S
   de Viveiros, L
   Dragowsky, M
   Druszkiewicz, E
   Fiorucci, S
   Gaitskell, RJ
   Hall, C
   Faham, C
   Holbrook, B
   Kastens, L
   Kazkaz, K
   Kwong, J
   Lander, R
   Leonard, D
   Malling, D
   Mannino, R
   McKinsey, DN
   Mei, D
   Mock, J
   Morii, M
   Nikkel, JA
   Phelps, P
   Shutt, T
   Skulski, W
   Sorensen, P
   Spaans, J
   Steigler, T
   Svoboda, R
   Sweany, M
   Thomson, J
   Tripathi, M
   Walsh, N
   Webb, R
   White, J
   Wolfs, FLH
   Woods, M
   Zhang, C
AF Akerib, D. S.
   Bai, X.
   Bedikian, S.
   Bernstein, A.
   Bolozdynya, A.
   Bradley, A.
   Cahn, S. B.
   Carr, D.
   Chapman, J. J.
   Clark, K.
   Classen, T.
   Curioni, A.
   Dahl, C. E.
   Dazeley, S.
   de Viveiros, L.
   Dragowsky, M.
   Druszkiewicz, E.
   Fiorucci, S.
   Gaitskell, R. J.
   Hall, C.
   Faham, C.
   Holbrook, B.
   Kastens, L.
   Kazkaz, K.
   Kwong, J.
   Lander, R.
   Leonard, D.
   Malling, D.
   Mannino, R.
   McKinsey, D. N.
   Mei, D.
   Mock, J.
   Morii, M.
   Nikkel, J. A.
   Phelps, P.
   Shutt, T.
   Skulski, W.
   Sorensen, P.
   Spaans, J.
   Steigler, T.
   Svoboda, R.
   Sweany, M.
   Thomson, J.
   Tripathi, M.
   Walsh, N.
   Webb, R.
   White, J.
   Wolfs, F. L. H.
   Woods, M.
   Zhang, C.
TI The LUX prototype detector: Heat exchanger development
SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS
   SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
LA English
DT Article
DE Noble-liquid detectors; Charge transport and multiplication in liquid
   media; Large detector systems for particle and astroparticle physics
ID DARK-MATTER
AB The LUX (large underground xenon) detector is a two-phase xenon time projection chamber (TPC) designed to search for WIMP-nucleon dark matter interactions. As with all noble element detectors, continuous purification of the detector medium is essential to produce a large ( > 1 ms) electron lifetime; this is necessary for efficient measurement of the electron signal which in turn is essential for achieving robust discrimination of signal from background events. In this paper, we describe the development of a novel purification system deployed in a prototype detector. The results from the operation of this prototype indicated heat exchange with an efficiency above 94% up to a flow rate of 42 slpm, allowing for an electron drift length greater than I m to be achieved in approximately 2 days and sustained for the duration of the testing period. (C) 2013 Elsevier B.V. All rights reserved.
C1 [Akerib, D. S.; Bradley, A.; Clark, K.; Dahl, C. E.; Dragowsky, M.; Kwong, J.; Phelps, P.; Shutt, T.] Case Western Reserve Univ, Dept Phys, Cleveland, OH 44106 USA.
   [Bai, X.] South Dakota Sch Mines & Technol, Rapid City, SD 57701 USA.
   [Bedikian, S.; Cahn, S. B.; Curioni, A.; Kastens, L.; McKinsey, D. N.; Nikkel, J. A.] Yale Univ, Dept Phys, New Haven, CT 06511 USA.
   [Bernstein, A.; Carr, D.; Dazeley, S.; Kazkaz, K.; Sorensen, P.] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA.
   [Bolozdynya, A.] Natl Res Nucl Univ MEPHI, Fac Expt & Theoret Phys, Moscow 115409, Russia.
   [Chapman, J. J.; de Viveiros, L.; Fiorucci, S.; Gaitskell, R. J.; Faham, C.; Malling, D.] Brown Univ, Dept Phys, Providence, RI 02912 USA.
   [Classen, T.; Holbrook, B.; Lander, R.; Mock, J.; Svoboda, R.; Sweany, M.; Thomson, J.; Tripathi, M.; Walsh, N.; Woods, M.] Univ Calif Davis, Dept Phys, Davis, CA 95616 USA.
   [Druszkiewicz, E.; Skulski, W.; Wolfs, F. L. H.] Univ Rochester, Dept Phys & Astron, Rochester, NY 14627 USA.
   [Hall, C.; Leonard, D.] Univ Maryland, Dept Phys, College Pk, MD 20742 USA.
   [Mannino, R.; Steigler, T.; Webb, R.; White, J.] Texas A&M Univ, Dept Phys, College Stn, TX 77843 USA.
   [Mei, D.; Spaans, J.; Zhang, C.] Univ S Dakota, Dept Phys, Vermillion, SD 57069 USA.
   [Morii, M.] Harvard Univ, Dept Phys, Cambridge, MA 02138 USA.
RP Clark, K (reprint author), Case Western Reserve Univ, Dept Phys, Cleveland, OH 44106 USA.
EM kjc20@psu.edu
RI de Viveiros, Luiz/M-9205-2013; 
OI de Viveiros, Luiz/0000-0002-7038-2361; Dahl, Carl
   Eric/0000-0003-1637-2346
FU US Department of Energy (DOE) [DE-FG02-08ER41549, DE-FG02-91ER40688,
   DE-FG02-95ER40917, DE-FG02-91ER40674, DE-FG02-11ER41738, DE-SC0006605,
   DE-AC52-07NA27344]; US National Science Foundation [PHYS-0750671,
   PHY-0707051, PHY-0801536, PHY-1004661, PHY-1102470, PHY-1003660];
   Research Corporation Grant [RA0350]; Center for Ultra-low Background
   Experiments at DUSEL (CUBED); South Dakota School of Mines and
   Technology (SDSMT)
FX This work was partially supported by the US Department of Energy (DOE)
   under Award nos. DE-FG02-08ER41549, DE-FG02-91ER40688, DOE,
   DE-FG02-95ER40917, DE-FG02-91ER40674, DE-FG02-11ER41738, DE-SC0006605,
   DE-AC52-07NA27344, the US National Science Foundation under Award nos.
   PHYS-0750671, PHY-0707051, PHY-0801536, PHY-1004661, PHY-1102470,
   PHY-1003660, the Research Corporation Grant RA0350, the Center for
   Ultra-low Background Experiments at DUSEL (CUBED), and the South Dakota
   School of Mines and Technology (SDSMT). We gratefully acknowledge the
   logistical and technical support and the access to laboratory
   infrastructure provided to us by the Sanford Underground Research
   Facility (SURF) and its personnel at Lead, South Dakota.
NR 12
TC 3
Z9 3
U1 0
U2 10
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0168-9002
J9 NUCL INSTRUM METH A
JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc.
   Equip.
PD MAY 1
PY 2013
VL 709
BP 29
EP 36
DI 10.1016/j.nima.2013.01.036
PG 8
WC Instruments & Instrumentation; Nuclear Science & Technology; Physics,
   Nuclear; Physics, Particles & Fields
SC Instruments & Instrumentation; Nuclear Science & Technology; Physics
GA 128UB
UT WOS:000317794100006
ER

PT J
AU Paschalis, S
   Lee, IY
   Macchiavelli, AO
   Campbell, CM
   Cromaz, M
   Gros, S
   Pavan, J
   Qian, J
   Clark, RM
   Crawford, HL
   Doering, D
   Fallon, P
   Lionberger, C
   Loew, T
   Petri, M
   Stezelberger, T
   Zimmermann, S
   Radford, DC
   Lagergren, K
   Weisshaar, D
   Winkler, R
   Glasmacher, T
   Anderson, JT
   Beausang, CW
AF Paschalis, S.
   Lee, I. Y.
   Macchiavelli, A. O.
   Campbell, C. M.
   Cromaz, M.
   Gros, S.
   Pavan, J.
   Qian, J.
   Clark, R. M.
   Crawford, H. L.
   Doering, D.
   Fallon, P.
   Lionberger, C.
   Loew, T.
   Petri, M.
   Stezelberger, T.
   Zimmermann, S.
   Radford, D. C.
   Lagergren, K.
   Weisshaar, D.
   Winkler, R.
   Glasmacher, T.
   Anderson, J. T.
   Beausang, C. W.
TI The performance of the Gamma-Ray Energy Tracking In-beam Nuclear Array
   GRETINA
SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS
   SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
LA English
DT Article
DE HPGe detectors; Segmented Ge crystals; Ge gamma-ray energy tracking
   arrays; gamma-ray tracking
ID POSITION RESOLUTION; GERMANIUM DETECTORS; NEUTRON DAMAGE; SPECTROMETER;
   SPECTROSCOPY
AB The Gamma-Ray Energy Tracking In-beam Nuclear Array (GRETINA) is a new generation high-resolution 7-gamma ay spectrometer consisting of electrically segmented high-purity germanium crystals. GRETINA is capable of reconstructing the energy and position of each 7-gamma ay interaction point inside the crystal with high resolution. This enables 7-gamma ay energy tracking which in turn provides an array with large photopeak efficiency, high resolution and good peak-to-total ratio. GRETINA is used for nuclear structure studies with demanding 7-gamma ay detection requirements and it is suitable for experiments with radioactive-ion beams with high recoil velocities. The GRETINA array has a 1 pi solid angle coverage and constitutes the first stage towards the full 4 pi array GRETA. We present in this paper the main parts and the performance of the GRETINA system. (C) 2013 Elsevier B.V. All rights reserved.
C1 [Paschalis, S.; Lee, I. Y.; Macchiavelli, A. O.; Campbell, C. M.; Cromaz, M.; Gros, S.; Pavan, J.; Qian, J.; Clark, R. M.; Crawford, H. L.; Doering, D.; Fallon, P.; Lionberger, C.; Loew, T.; Petri, M.; Stezelberger, T.; Zimmermann, S.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
   [Radford, D. C.; Lagergren, K.] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
   [Weisshaar, D.; Winkler, R.; Glasmacher, T.] Michigan State Univ, Natl Superconducting Cyclotron Lab, E Lansing, MI 48824 USA.
   [Anderson, J. T.] Argonne Natl Lab, Argonne, IL 60439 USA.
   [Beausang, C. W.] Univ Richmond, Dept Phys, Richmond, VA 23173 USA.
RP Paschalis, S (reprint author), Tech Univ Darmstadt, Inst Kernphys, Petersenstr 30, D-64289 Darmstadt, Germany.
EM spaschalis@ikp.tu-darmstadt.de; IYLee@lbl.gov
RI Glasmacher, Thomas/H-9673-2014; radford, David/A-3928-2015; Petri,
   Marina/H-4630-2016; Paschalis, Stefanos/H-8758-2016
OI Glasmacher, Thomas/0000-0001-9436-2448; Petri,
   Marina/0000-0002-3740-6106; Paschalis, Stefanos/0000-0002-9113-3778
FU U.S. Department of Energy [DE-AC02-05CHI1231]
FX The work at LBNL is supported by the U.S. Department of Energy under
   Contract No. DE-AC02-05CHI1231. The authors would like to acknowledge O.
   Tench, B. Pirard and M.O. Lampert from the Canberra France-Lingolsheim
   Facility for their help regarding the detector design. The authors would
   also like to acknowledge the contribution from T. Lauritsen for his help
   with the software, S. Virostek for his coordination of the mechanical
   subsystem, H. Yaver for his help with the electronics, C.J. Lister and
   the GRETINA advisory committee for numerous contributions and
   suggestions. Finally, the authors would like to thank J.M. Allmond, R.O.
   Hughes and T.J. Ross for their assistance in setting up the system, R.J.
   McDonald for his help with the documentation and the staff of the
   88-Inch Cyclotron at Lawrence Berkeley National Laboratory for their
   help and technical support.
NR 28
TC 67
Z9 68
U1 0
U2 24
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0168-9002
EI 1872-9576
J9 NUCL INSTRUM METH A
JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc.
   Equip.
PD MAY 1
PY 2013
VL 709
BP 44
EP 55
DI 10.1016/j.nima.2013.01.009
PG 12
WC Instruments & Instrumentation; Nuclear Science & Technology; Physics,
   Nuclear; Physics, Particles & Fields
SC Instruments & Instrumentation; Nuclear Science & Technology; Physics
GA 128UB
UT WOS:000317794100008
ER

PT J
AU Boatner, LA
   Neal, JS
   Kolopus, JA
   Ramey, JO
   Akkurt, H
AF Boatner, Lynn A.
   Neal, John S.
   Kolopus, James A.
   Ramey, Joanne O.
   Akkurt, Hatice
TI The characterization of scintillator performance at temperatures up to
   400 degrees centigrade
SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS
   SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
LA English
DT Article
DE Scintillator; Temperature variation; Gamma ray; Well logging; Geothermal
ID DEPENDENCE; LUALO3-CE; YIELD
AB The logging and characterization of geothermal wells requires improved scintillator systems that are capable of operation at temperatures significantly above those commonly encountered in the logging of most conventional oil and gas wells (e.g., temperatures nominally in the range of up to 150 degrees C). Unfortunately, most of the existing data on the performance of scintillators for radiation detection at elevated temperatures is fragmentary, uncorrelated, and generally limited to relatively low temperatures- in most cases to temperatures well below 200 degrees C. We have designed a system for characterizing scintillator performance at temperatures extending up to 400 degrees C under inert atmospheric conditions, and this system is applied here to the determination of scintillator performance at elevated temperatures for a wide range of scintillators including, among others: bismuth germanate, cadmium tungstate, cesium iodide, cesium iodide (Tl), cesium iodide (Na), sodium iodide, sodium iodide (Tl), lutetium oxy-orthosilicate (Ce), zinc tungstate, yttrium aluminum perovskite (a), yttrium aluminum garnet (Ce), lutetium aluminum perovskite (Ce), and barium fluoride, strontium iodide (Eu). Most of the scintillator samples exhibited severe degradation in light yield at elevated temperatures. Measurements were terminated at temperatures at which the measured light yield no longer appeared useful. The results of these high-temperature scintillator performance tests are described in detail here. Comparisons of the relative elevated-temperature properties of the various scintillator materials have resulted in the identification of promising scintillator candidates for high-temperature use in geothermal and fossil-fuel well environments. (c) 2013 Elsevier B.V. All rights reserved.
C1 [Boatner, Lynn A.; Kolopus, James A.; Ramey, Joanne O.] Oak Ridge Natl Lab, Mat Sci & Technol Div, ORNL Ctr Radiat Detect Mat & Syst, Oak Ridge, TN 37831 USA.
   [Neal, John S.] Oak Ridge Natl Lab, Global Nucl Secur Technol Div, ORNL Ctr Radiat Detect Mat & Syst, Oak Ridge, TN 37831 USA.
   [Akkurt, Hatice] Oak Ridge Natl Lab, Reactor & Nucl Syst Div, ORNL Ctr Radiat Detect Mat & Syst, Oak Ridge, TN 37831 USA.
RP Boatner, LA (reprint author), Oak Ridge Natl Lab, 1 Bethel Valley Rd,MS-6044 Bldg 3150, Oak Ridge, TN 37831 USA.
EM boatnerla@ornl.gov; Nealjs1@ornl.gov; kolopusja@ornl.gov;
   rameyjo@ornl.gov; akkurth@ornl.gov
RI Boatner, Lynn/I-6428-2013; Neal, John/R-8203-2016
OI Boatner, Lynn/0000-0002-0235-7594; Neal, John/0000-0001-8337-5235
FU US Department of Energy's Geothermal Office
FX This work is funded by the US Department of Energy's Geothermal Office.
   The authors are indebted to and acknowledge with sincere thanks: Michael
   Mayhugh of Saint-Gobain Crystals for his aid in supplying
   un-encapsulated single crystals of LaCl<INF>3</INF>:Ce and
   LaBr<INF>3</INF>:Ce, and Jochen Alkemper, Lutz Parthier, and Matthew
   Roth of Schott AG for their assistance in supplying the un-canned single
   crystals of CeBr<INF>3</INF> examined here.
NR 15
TC 11
Z9 11
U1 0
U2 20
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0168-9002
J9 NUCL INSTRUM METH A
JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc.
   Equip.
PD MAY 1
PY 2013
VL 709
BP 95
EP 107
DI 10.1016/j.nima.2013.01.013
PG 13
WC Instruments & Instrumentation; Nuclear Science & Technology; Physics,
   Nuclear; Physics, Particles & Fields
SC Instruments & Instrumentation; Nuclear Science & Technology; Physics
GA 128UB
UT WOS:000317794100015
ER

PT J
AU Graham, JP
   Ringler, T
AF Graham, Jonathan Pietarila
   Ringler, Todd
TI A framework for the evaluation of turbulence closures used in mesoscale
   ocean large-eddy simulations
SO OCEAN MODELLING
LA English
DT Article
DE Mesoscale eddies; Turbulent transfer; Parameterization; Oceanic
   turbulence; Eddy viscosity; Accuracy; Enstrophy
ID POTENTIAL VORTICITY METHOD; CAMASSA-HOLM EQUATIONS; STOKES-ALPHA MODEL;
   2-DIMENSIONAL TURBULENCE; NUMERICAL SIMULATIONS; FLUID TURBULENCE;
   PARAMETERIZATION; CIRCULATION; VISCOSITY; EDDIES
AB We present a methodology to determine the best turbulence closure for an eddy-permitting ocean model through measurement of the error-landscape of the closure's subgrid spectral transfers and flux. We apply this method to 6 different closures for forced-dissipative simulations of the barotropic vorticity equation on an f-plane (2D Navier-Stokes equation). Using a high-resolution benchmark, we compare each closure's model of energy and enstrophy transfer to the actual transfer observed in the benchmark run. The error-landscape norm enables us to both make objective comparisons between the closures and to optimize each closure's free parameter for a fair comparison. The hyper-viscous closure most closely reproduces the enstrophy cascade, especially at larger scales due to the concentration of its dissipative effects to the very smallest scales. The viscous and Leith closures perform nearly as well, especially at smaller scales where all three models were dissipative. The Smagorinsky closure dissipates enstrophy at the wrong scales. The anticipated potential vorticity closure was the only model to reproduce the upscale transfer of kinetic energy from the unresolved scales, but would require high-order Laplacian corrections in order to concentrate dissipation at the smallest scales. The Lagrangian-averaged a-model closure did not perform successfully for forced 2D isotropic Navier-Stokes: small-scale filamentation is only slightly reduced by the model while small-scale roll-up is prevented. Together, this reduces the effects of diffusion. Published by Elsevier Ltd.
C1 [Graham, Jonathan Pietarila; Ringler, Todd] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
RP Ringler, T (reprint author), Los Alamos Natl Lab, MS B258, Los Alamos, NM 87545 USA.
EM jpietarilagraham@mailaps.org; ring-ler@lanl.gov
RI Pietarila Graham, Jonathan/B-5222-2008
OI Pietarila Graham, Jonathan/0000-0003-1862-0526
FU Office of Biological and Environmental Research within the US Department
   of Energy's Office of Science
FX We acknowledge discussions with B. Fox Kemper, D. Holm, and B. Wingate.
   We would like to thank the reviewers for the constructive comments on
   this manuscript. This work was supported by the Earth System Modeling
   and Regional and Global Climate Modeling programs of the Office of
   Biological and Environmental Research within the US Department of
   Energy's Office of Science.
NR 45
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U1 0
U2 9
PU ELSEVIER SCI LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
SN 1463-5003
J9 OCEAN MODEL
JI Ocean Model.
PD MAY
PY 2013
VL 65
BP 25
EP 39
DI 10.1016/j.ocemod.2013.01.004
PG 15
WC Meteorology & Atmospheric Sciences; Oceanography
SC Meteorology & Atmospheric Sciences; Oceanography
GA 125VR
UT WOS:000317570200003
ER

PT J
AU Tannous, K
   Lam, PS
   Sokhansanj, S
   Grace, JR
AF Tannous, K.
   Lam, P. S.
   Sokhansanj, S.
   Grace, J. R.
TI Physical Properties for Flow Characterization of Ground Biomass from
   Douglas Fir Wood
SO PARTICULATE SCIENCE AND TECHNOLOGY
LA English
DT Article
DE Biomass particles; biomass powder; Douglas fir; flow characteristics;
   mixture; physical properties; woody biomass
ID NONSPHERICAL PARTICLES; CYLINDRICAL PARTICLES; DENSITY-MEASUREMENTS;
   BULK-DENSITY; PACKING; FLUIDIZATION; POWDER; SHAPE; FLOWABILITY; SAWDUST
AB The particle size distribution and packing (loose bulk and tapped density) of a mixture of ground biomass from Douglas fir wood particles was characterized by different practical methods: sieving, digital imaging and scanning electron microscopy. The ground mixture was analyzed using a set of 14 wire mesh sieves. The calculated mean diameter of mixture was 251 mu m. The mixture was divided into four size fractions of mean size ranging from 74 to 781 mu m. Particle length measured by imaging technique were 34 times larger than the mean diameter determined by sieve analysis. Similarly, particle width was 1.02.5 times larger than mean particle diameter. The sphericity of particles in each of the four fractions increased with decreasing size of the sieve indicating that smaller particles also have a smaller aspect ratio. Empirical power law equations were developed to correlate the packing and flow ability of ground particles (HR) to the mean diameter, with R-2 values of 0.88 and 0.91, respectively. The HR values indicated good flow ability for the large particles and poor flow ability for the smallest particles and the entire mixture. HR and porosity ratio reached an asymptote for particles larger than 400 mu m.
C1 [Tannous, K.] Univ Estadual Campinas, Sch Chem Engn, Sao Paulo, Brazil.
   [Lam, P. S.; Sokhansanj, S.; Grace, J. R.] Univ British Columbia Vancouver, Dept Chem & Biol Engn, Vancouver, BC, Canada.
   [Sokhansanj, S.] Oak Ridge Natl Lab, Div Environm Sci, Oak Ridge, TN 37831 USA.
RP Tannous, K (reprint author), Albert Einstein Ave 500, BR-13083852 Campinas, SP, Brazil.
EM katia@feq.unicamp.br
FU Brazilian agency Faepex-Unicamp; Natural Sciences and Engineering
   Research Council of Canada; U.S. Department of Energy Office of Biomass
   Program
FX The authors are grateful for the financial support from the Brazilian
   agency Faepex-Unicamp and the Natural Sciences and Engineering Research
   Council of Canada. Funding from the U.S. Department of Energy Office of
   Biomass Program in support of advanced biomass pre-processing research
   at the University of British Columbia is also acknowledged.
NR 47
TC 6
Z9 6
U1 1
U2 31
PU TAYLOR & FRANCIS INC
PI PHILADELPHIA
PA 325 CHESTNUT ST, SUITE 800, PHILADELPHIA, PA 19106 USA
SN 0272-6351
J9 PARTICUL SCI TECHNOL
JI Part. Sci. Technol.
PD MAY 1
PY 2013
VL 31
IS 3
BP 291
EP 300
DI 10.1080/02726351.2012.732676
PG 10
WC Engineering, Chemical
SC Engineering
GA 129EQ
UT WOS:000317822100013
ER

PT J
AU Geiser, DM
   Aoki, T
   Bacon, CW
   Baker, SE
   Bhattacharyya, MK
   Brandt, ME
   Brown, DW
   Burgess, LW
   Chulze, S
   Coleman, JJ
   Correll, JC
   Covert, SF
   Crous, PW
   Cuomo, CA
   De Hoog, GS
   Di Pietro, A
   Elmer, WH
   Epstein, L
   Frandsen, RJN
   Freeman, S
   Gagkaeva, T
   Glenn, AE
   Gordon, TR
   Gregory, NF
   Hammond-Kosack, KE
   Hanson, LE
   Jimenez-Gasco, MD
   Kang, S
   Kistler, HC
   Kuldau, GA
   Leslie, JF
   Logrieco, A
   Lu, GZ
   Lysoe, E
   Ma, LJ
   McCormick, SP
   Migheli, Q
   Moretti, A
   Munaut, F
   O'Donnell, K
   Pfenning, L
   Ploetz, RC
   Proctor, RH
   Rehner, SA
   Robert, VARG
   Rooney, AP
   bin Salleh, B
   Scandiani, MM
   Scauflaire, J
   Short, DPG
   Steenkamp, E
   Suga, H
   Summerell, BA
   Sutton, DA
   Thrane, U
   Trail, F
   Van Diepeningen, A
   VanEtten, HD
   Viljoen, A
   Waalwijk, C
   Ward, TJ
   Wingfield, MJ
   Xu, JR
   Yang, XB
   Yli-Mattila, T
   Zhang, N
AF Geiser, David M.
   Aoki, Takayuki
   Bacon, Charles W.
   Baker, Scott E.
   Bhattacharyya, Madan K.
   Brandt, Mary E.
   Brown, Daren W.
   Burgess, Lester W.
   Chulze, Sofia
   Coleman, Jeffrey J.
   Correll, James C.
   Covert, Sarah F.
   Crous, Pedro W.
   Cuomo, Christina A.
   De Hoog, G. Sybren
   Di Pietro, Antonio
   Elmer, Wade H.
   Epstein, Lynn
   Frandsen, Rasmus J. N.
   Freeman, Stanley
   Gagkaeva, Tatiana
   Glenn, Anthony E.
   Gordon, Thomas R.
   Gregory, Nancy F.
   Hammond-Kosack, Kim E.
   Hanson, Linda E.
   Jimenez-Gasco, Maria del Mar
   Kang, Seogchan
   Kistler, H. Corby
   Kuldau, Gretchen A.
   Leslie, John F.
   Logrieco, Antonio
   Lu, Guozhong
   Lysoe, Erik
   Ma, Li-Jun
   McCormick, Susan P.
   Migheli, Quirico
   Moretti, Antonio
   Munaut, Francoise
   O'Donnell, Kerry
   Pfenning, Ludwig
   Ploetz, Randy C.
   Proctor, Robert H.
   Rehner, Stephen A.
   Robert, Vincent A. R. G.
   Rooney, Alejandro P.
   bin Salleh, Baharuddin
   Mercedes Scandiani, Maria
   Scauflaire, Jonathan
   Short, Dylan P. G.
   Steenkamp, Emma
   Suga, Haruhisa
   Summerell, Brett A.
   Sutton, Deanna A.
   Thrane, Ulf
   Trail, Francis
   Van Diepeningen, Anne
   VanEtten, Hans D.
   Viljoen, Altus
   Waalwijk, Cees
   Ward, Todd J.
   Wingfield, Michael J.
   Xu, Jin-Rong
   Yang, Xiao-Bing
   Yli-Mattila, Tapani
   Zhang, Ning
TI One Fungus, One Name: Defining the Genus Fusarium in a Scientifically
   Robust Way That Preserves Longstanding Use
SO PHYTOPATHOLOGY
LA English
DT Article
ID SOLANI SPECIES COMPLEX; SUDDEN-DEATH SYNDROME; PHYLOGENY; TUCUMANIAE;
   TAXONOMY; REVEALS; GENERA
AB In this letter, we advocate recognizing the genus Fusarium as the sole name for a group that includes virtually all Fusarium species of importance in plant pathology, mycotoxicology, medicine, and basic research. This phylogenetically guided circumscription will free scientists from any obligation to use other genus names, including teleomorphs, for species nested within this clade, and preserve the application of the name Fusarium in the way it has been used for almost a century. Due to recent changes in the International Code of Nomenclature for algae, fungi, and plants, this is an urgent matter that requires community attention. The alternative is to break the longstanding concept of Fusarittm into nine or more genera, and remove important taxa such as those in the E solani species complex from the genus, a move we believe is unnecessary. Here we present taxonomic and nomenclatural proposals that will preserve established research connections and facilitate communication within alid between research communities, and at the same time support strong scientific principles and good taxonomic practice.
C1 [Geiser, David M.; Jimenez-Gasco, Maria del Mar; Kang, Seogchan; Kuldau, Gretchen A.] Penn State Univ, Dept Plant Pathol, University Pk, PA 16802 USA.
   [Aoki, Takayuki] Natl Inst Agrobiol Sci, Genet Divers Dept, Tsukuba, Ibaraki 3058602, Japan.
   [Bacon, Charles W.; Glenn, Anthony E.] USDA ARS SAA, Athens, GA 30605 USA.
   [Baker, Scott E.] Pacific NW Natl Lab, Richland, WA 99352 USA.
   [Bhattacharyya, Madan K.; Yang, Xiao-Bing] Iowa State Univ, Dept Plant Pathol & Microbiol, Ames, IA 50011 USA.
   [Brandt, Mary E.] Ctr Dis Control & Prevent, Atlanta, GA 30333 USA.
   [Brown, Daren W.; McCormick, Susan P.; O'Donnell, Kerry; Proctor, Robert H.; Rooney, Alejandro P.; Ward, Todd J.] NCAUR ARS USDA, Peoria, IL 61604 USA.
   [Burgess, Lester W.] Univ Sydney, Fac Agr, Sydney, NSW 2006, Australia.
   [Chulze, Sofia] Univ Nacl Rio Cuarto, Dept Microbiol & Immunol, Cordoba, Argentina.
   [Coleman, Jeffrey J.] Massachusetts Gen Hosp, Dept Med, Boston, MA 02114 USA.
   [Correll, James C.] Univ Arkansas, Dept Plant Pathol, Fayetteville, AR 72701 USA.
   [Covert, Sarah F.] Univ Georgia, Warnell Sch Forestry & Nat Resources, Athens, GA 30602 USA.
   [Crous, Pedro W.; De Hoog, G. Sybren; Robert, Vincent A. R. G.; Van Diepeningen, Anne] CBS KNAW Fungal Biodivers Ctr, Utrecht, Netherlands.
   [Cuomo, Christina A.] Broad Inst MIT & Harvard, Cambridge, MA 02142 USA.
   [Di Pietro, Antonio] Univ Cordoba, Dept Genet, Cordoba, Spain.
   [Elmer, Wade H.] Connecticut Agr Expt Stn, Dept Plant Pathol, New Haven, CT 06504 USA.
   [Epstein, Lynn; Gordon, Thomas R.; Short, Dylan P. G.] Univ Calif Davis, Dept Plant Pathol, Davis, CA 95616 USA.
   [Frandsen, Rasmus J. N.; Thrane, Ulf] Tech Univ Denmark, Dept Syst Biol, DK-2800 Lyngby, Denmark.
   [Freeman, Stanley] Agr Res Org, Volcani Ctr, Dept Plant Pathol & Weed Res, IL-50250 Bet Dagan, Israel.
   [Gagkaeva, Tatiana] All Russian Inst Plant Protect, Lab Mycol & Phytopathol, St Petersburg 196608, Russia.
   [Gregory, Nancy F.] Univ Delaware, Dept Plant & Soil Sci, Newark, DE 19716 USA.
   [Hammond-Kosack, Kim E.] Rothamsted Res, Ctr Sustainable Pest & Dis Management, Harpenden AL5 2JQ, Herts, England.
   [Hanson, Linda E.] ARS USDA Sugarbeet & Bean Res Unit, E Lansing, MI 48824 USA.
   [Kistler, H. Corby] ARS USDA Cereal Dis Lab, St Paul, MN 55108 USA.
   [Leslie, John F.] Kansas State Univ, Dept Plant Pathol, Manhattan, KS 66506 USA.
   [Logrieco, Antonio; Moretti, Antonio] CNR, ISPA Inst Sci Food Prod, I-70126 Bari, Italy.
   [Lu, Guozhong] Dalian Nationalities Univ, Res Ctr Bioresources & Environm, Liaoning, Peoples R China.
   [Lysoe, Erik] Bioforsk Norwegian Inst Agr & Environm Res, Dept Plant Hlth & Plant Protect, N-1432 As, Norway.
   [Ma, Li-Jun] Univ Massachusetts, Dept Plant Soil & Insect Sci, Amherst, MA 01003 USA.
   [Migheli, Quirico] Univ Sassari, Dipartimento Protez Piante, I-07100 Sassari, Italy.
   [Munaut, Francoise; Scauflaire, Jonathan] Catholic Univ Louvain, Earth & Life Inst, B-1348 Louvain, Belgium.
   [Pfenning, Ludwig] Univ Fed Lavras, Dept Fitopatol, Lavras, MG, Brazil.
   [Ploetz, Randy C.] Univ Florida, Ctr Trop Res & Educ, Dept Plant Pathol, Homestead, FL 33031 USA.
   [Rehner, Stephen A.] ARS, Systemat Mycol & Microbiol Lab, USDA, Beltsville, MD 20705 USA.
   [bin Salleh, Baharuddin] Univ Sci Malaysia, Sch Biol Sci, George Town, Malaysia.
   [Mercedes Scandiani, Maria] Lab Agr Rio Parana, Buenos Aires, DF, Argentina.
   [Short, Dylan P. G.] US Agr Res Stn, Salinas, CA 93905 USA.
   [Steenkamp, Emma; Wingfield, Michael J.] Univ Pretoria, FABI, Dept Microbiol & Plant Pathol, ZA-0002 Pretoria, South Africa.
   [Suga, Haruhisa] Gifu Univ, Gifu, Japan.
   [Summerell, Brett A.] Royal Bot Garden Sydney, Sydney, NSW 2000, Australia.
   [Sutton, Deanna A.] Univ Texas Hlth Sci Ctr San Antonio, Dept Pathol, San Antonio, TX 78229 USA.
   [Trail, Francis] Michigan State Univ, Dept Plant Biol, E Lansing, MI 48824 USA.
   [VanEtten, Hans D.] Univ Arizona, Div Plant Pathol & Microbiol, Tucson, AZ 85721 USA.
   [Viljoen, Altus] Univ Stellenbosch, Dept Plant Pathol, ZA-7602 Matieland, South Africa.
   [Waalwijk, Cees] Wageningen Univ & Res, Plant Res Int, NL-6700 Wageningen, Netherlands.
   [Xu, Jin-Rong] Purdue Univ, Dept Plant Pathol, W Lafayette, IN 47907 USA.
   [Yli-Mattila, Tapani] Univ Turku, Lab Plant Physiol & Mol Biol, Dept Biol, FIN-20014 Turku, Finland.
   [Zhang, Ning] Rutgers State Univ, Dept Plant Biol & Pathol, New Brunswick, NJ 08901 USA.
RP Geiser, DM (reprint author), Penn State Univ, Dept Plant Pathol, University Pk, PA 16802 USA.
EM dgeiser@psu.edu
RI Jimenez-Gasco, Maria del Mar/A-9701-2011; Migheli, Quirico/B-7203-2009;
   Crous, Pedro/H-1489-2012; Geiser, David/J-9950-2013; Zhang,
   Ning/K-3046-2012; Wingfield, Michael/A-9473-2008; Coleman,
   Jeffrey/E-2981-2015; Di Pietro, Antonio/K-9220-2014; Thrane,
   Ulf/G-2978-2016; Steenkamp, Emma/B-7958-2009; 
OI Frandsen, Rasmus John Normand/0000-0002-3799-6062; Moretti,
   Antonio/0000-0002-5232-6972; Logrieco, Antonio
   Francesco/0000-0002-8606-451X; Kistler, Harold/0000-0001-5312-6297;
   Kang, Seogchan/0000-0003-2291-5634; Jimenez-Gasco, Maria del
   Mar/0000-0001-7329-0211; Migheli, Quirico/0000-0002-2459-5833; Crous,
   Pedro/0000-0001-9085-8825; Zhang, Ning/0000-0003-0755-2505; Di Pietro,
   Antonio/0000-0001-5930-5763; Thrane, Ulf/0000-0002-6040-4141; Steenkamp,
   Emma/0000-0003-0217-8219; Ma, Li-Jun/0000-0002-2733-3708; Coleman,
   Jeffrey/0000-0001-8579-1996
FU U.S. Department of Agriculture (USDA)
FX We thank P. Cantino for his helpful comments on the PhyloCode statement.
   We thank all of our colleagues for their helpful input and discussions
   on this important issue. The mention of firm names or trade products
   does not imply that they are endorsed or recommended by the U.S.
   Department of Agriculture (USDA) over other firms or similar products
   not mentioned. The USDA is an equal opportunity provider and employer.
   Manuscript no. 13-006-J from the Kansas Agricultural Experiment Station,
   Manhattan.
NR 46
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U1 5
U2 114
PU AMER PHYTOPATHOLOGICAL SOC
PI ST PAUL
PA 3340 PILOT KNOB ROAD, ST PAUL, MN 55121 USA
SN 0031-949X
J9 PHYTOPATHOLOGY
JI Phytopathology
PD MAY
PY 2013
VL 103
IS 5
BP 400
EP 408
PG 9
WC Plant Sciences
SC Plant Sciences
GA 129VW
UT WOS:000317873100001
PM 23379853
ER

PT J
AU Noland, CL
   Doudna, JA
AF Noland, Cameron L.
   Doudna, Jennifer A.
TI Multiple sensors ensure guide strand selection in human RNAi pathways
SO RNA-A PUBLICATION OF THE RNA SOCIETY
LA English
DT Article
DE RNAi; RISC; Dicer; TRBP; PACT; strand selection
ID HUMAN ARGONAUTE PROTEINS; EMBRYONIC STEM-CELLS; HUMAN RISC;
   PASSENGER-STRAND; HUMAN DICER; THERMODYNAMIC PARAMETERS; SECONDARY
   STRUCTURE; ASSEMBLY PATHWAYS; SILENCING COMPLEX; ENZYME COMPLEX
AB Small RNAs guide RNA-induced silencing complexes (RISCs) to bind to cognate mRNA transcripts and trigger silencing of protein expression during RNA interference (RNAi) in eukaryotes. A fundamental aspect of this process is the asymmetric loading of one strand of a short interfering RNA (siRNA) or microRNA (miRNA) duplex onto RISCs for correct target recognition. Here, we use a reconstituted system to determine the extent to which the core components of the human RNAi machinery contribute to RNA guide strand selection. We show that Argonaute2 (Ago2), the endonuclease that binds directly to siRNAs and miRNAs within RISC, has intrinsic but substrate-dependent RNA strand selection capability. This activity can be enhanced substantially when Ago2 is in complex with the endonuclease Dicer and the double-stranded RNA-binding proteins (dsRBPs)-trans-activation response (TAR) RNA-binding protein (TRBP) or protein activator of PKR (PACT). The extent to which human Dicer/dsRBP complexes contribute to strand selection is dictated by specific duplex parameters such as thermodynamics, 5' nucleotide identity, and structure. Surprisingly, our results also suggest that strand selection for some miRNAs is enhanced by PACT-containing complexes but not by those containing TRBP. Furthermore, overall mRNA targeting by miRNAs is disfavored for complexes containing TRBP but not PACT. These findings demonstrate that multiple proteins collaborate to ensure optimal strand selection in humans and reveal the possibility of delineating RNAi pathways based on the presence of TRBP or PACT.
C1 [Noland, Cameron L.; Doudna, Jennifer A.] Univ Calif Berkeley, Dept Mol & Cell Biol, Berkeley, CA 94720 USA.
   [Doudna, Jennifer A.] Univ Calif Berkeley, Howard Hughes Med Inst, Berkeley, CA 94720 USA.
   [Doudna, Jennifer A.] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA.
   [Doudna, Jennifer A.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Phys Biosci Div, Berkeley, CA 94720 USA.
RP Doudna, JA (reprint author), Univ Calif Berkeley, Dept Mol & Cell Biol, 229 Stanley Hall, Berkeley, CA 94720 USA.
EM doudna@berkeley.edu
FU US National Institutes of Health
FX We thank members of the Doudna lab for valuable discussions, A. Fisher
   for tissue culture assistance, and the Keck MacroLab for the use of
   their resources. This work was supported in part by a grant from the US
   National Institutes of Health (J.A.D.). J.A.D. is a Howard Hughes
   Medical Institute Investigator.
NR 59
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U1 0
U2 21
PU COLD SPRING HARBOR LAB PRESS, PUBLICATIONS DEPT
PI COLD SPRING HARBOR
PA 1 BUNGTOWN RD, COLD SPRING HARBOR, NY 11724 USA
SN 1355-8382
J9 RNA
JI RNA-Publ. RNA Soc.
PD MAY
PY 2013
VL 19
IS 5
BP 639
EP 648
DI 10.1261/rna.037424.112
PG 10
WC Biochemistry & Molecular Biology
SC Biochemistry & Molecular Biology
GA 126AS
UT WOS:000317584100006
PM 23531496
ER

PT J
AU Nayak, SK
   Singh, AK
   Belegundu, AD
   Yen, CF
AF Nayak, S. K.
   Singh, A. K.
   Belegundu, A. D.
   Yen, C. F.
TI Process for design optimization of honeycomb core sandwich panels for
   blast load mitigation
SO STRUCTURAL AND MULTIDISCIPLINARY OPTIMIZATION
LA English
DT Article
DE Honeycomb; Homogenization; Blast; Optimization; Sandwich plates; Virtual
   testing
ID NUMERICAL-SIMULATION; SHAPE OPTIMIZATION; AIR BLAST; PLATES; BEHAVIOR
AB A general process for optimization of a sandwich panel to minimize the effects of air blast loading is presented here. The panel geometry consists of two metal face plates with a crushable honeycomb or other type of core. Optimization is necessary as there is strong coupling between the several variables and the physics, which makes parametric studies relatively ineffective. Virtual testing is used to develop a homogenized model for the stress-strain curve of the honeycomb core, which can be readily applied to other types of cellular core. The homogenized model has been validated by comparison to existing results as well as to results from detailed finite element (FE) models. A design of experiments (DOE) based response surface optimization method in combination with LS-DYNA is used to minimize dynamic deflection or acceleration of the back face plate. Constraints on total mass and on plastic strain in the face plates are imposed. The mechanism of lowering the backface deflection is by increasing front face plate thickness which effectively distributes the blast load to a larger area of the core and avoids local concave deformation of the front face plate. Further, core depth is increased which increases panel stiffness. For acceleration minimization, results again produce a stiffer front face plate, but accompanied by a sufficiently soft core. The mechanism of lowering the backface acceleration is by absorbing energy with low transmitted stress. A clear cut comparison between monolithic metal plates and sandwich plates, for the same loading and failure criteria, is presented here.
C1 [Nayak, S. K.; Singh, A. K.; Belegundu, A. D.] Penn State Univ, University Pk, PA 16802 USA.
   [Nayak, S. K.] Brookhaven Natl Lab, Upton, NY 11973 USA.
   [Yen, C. F.] USA, Res Lab, WRMD, Aberdeen Proving Ground, MD USA.
RP Belegundu, AD (reprint author), Penn State Univ, University Pk, PA 16802 USA.
EM adb3@psu.edu
FU Army Research Office [50490-EG]; High Performance Computing Group at
   Penn State
FX This material is based upon work partly supported by the Army Research
   Office, Proposal Number 50490-EG, monitored by Dr. Bruce LaMattina.
   Partial financial and computational support from the High Performance
   Computing Group at Penn State under Mr. Vijay Agarwala is gratefully
   acknowledged.
NR 21
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Z9 3
U1 4
U2 47
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 1615-147X
J9 STRUCT MULTIDISCIP O
JI Struct. Multidiscip. Optim.
PD MAY
PY 2013
VL 47
IS 5
BP 749
EP 763
DI 10.1007/s00158-012-0845-x
PG 15
WC Computer Science, Interdisciplinary Applications; Engineering,
   Multidisciplinary; Mechanics
SC Computer Science; Engineering; Mechanics
GA 127FV
UT WOS:000317683800009
ER

PT J
AU Foe, K
   Namkoong, G
   Abdel-Fattah, TM
   Baumgart, H
   Jeong, MS
   Lee, DS
AF Foe, Kurniawan
   Namkoong, Gon
   Abdel-Fattah, Tarek M.
   Baumgart, Helmut
   Jeong, Mun Seok
   Lee, Dong-Seon
TI Controlled synthesis of ZnO spheres using structure directing agents
SO THIN SOLID FILMS
LA English
DT Article
DE Zinc oxide; Sphere; Liquid phase deposition; Thin film; Morphology;
   Structure directing agent
ID LIQUID-PHASE DEPOSITION; OPTICAL-PROPERTIES; HOLLOW SPHERES; NANORODS;
   GROWTH; MICROSPHERES; NANOCRYSTALS; FABRICATION; MORPHOLOGY; CATALYST
AB Controlled liquid phase deposition has been developed for fabricating zinc oxide (ZnO) nano/microspheres using a mixture of precursor solution of zinc acetate dihydrate, ammonium hydroxide, and structure directing agents (SDAs) such as ethanol and urea. We found that ZnO spheres can be formed when the SDAs are optimized with the proper pH values. At pH values less than 12, an anisotropic growth of ZnO flowers and rod structures was produced with/without SDAs. On the contrary, at a pH value of 12 the directional growth of ZnO was absolutely controlled and an isotropic growth of ZnO spheres was developed with the presence of SDAs. We also found that the volume ratio of ethanol and urea in the solution was a key factor to modulate the uniform size distribution and diameter of the ZnO spheres from nanometer to micrometer range. (C) 2013 Elsevier B.V. All rights reserved.
C1 [Foe, Kurniawan; Namkoong, Gon; Baumgart, Helmut] Old Dominion Univ, Dept Elect & Comp Engn, Appl Res Ctr, Norfolk, VA 23529 USA.
   [Abdel-Fattah, Tarek M.] Thomas Jefferson Natl Accelerator Facil, Appl Res Ctr, Newport News, VA 23606 USA.
   [Jeong, Mun Seok] Sungkyunkwan Univ, Dept Energy Sci, IBS, CINAP, Seoul, South Korea.
   [Lee, Dong-Seon] Gwangju Inst Sci & Technol, Sch Informat & Commun, Kwangju 500712, South Korea.
   [Abdel-Fattah, Tarek M.] Christopher Newport Univ, Dept Mol Biol & Chem, Newport News, VA 23606 USA.
RP Namkoong, G (reprint author), Old Dominion Univ, Dept Elect & Comp Engn, Appl Res Ctr, Norfolk, VA 23529 USA.
EM gnamkoon@odu.edu; munseokjeong@gmail.com
RI Jeong, Mun Seok/B-1128-2013
OI Jeong, Mun Seok/0000-0002-7019-8089
FU National Science Foundation [BRIGE-0824311]; Research Center Program of
   IBS (Institute for Basic Science) in Korea
FX This project is supported by the National Science Foundation under grant
   no. BRIGE-0824311 and also by the Research Center Program of IBS
   (Institute for Basic Science) in Korea.
NR 35
TC 5
Z9 5
U1 6
U2 94
PU ELSEVIER SCIENCE SA
PI LAUSANNE
PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND
SN 0040-6090
J9 THIN SOLID FILMS
JI Thin Solid Films
PD MAY 1
PY 2013
VL 534
BP 76
EP 82
DI 10.1016/j.tsf.2013.01.105
PG 7
WC Materials Science, Multidisciplinary; Materials Science, Coatings &
   Films; Physics, Applied; Physics, Condensed Matter
SC Materials Science; Physics
GA 127ZD
UT WOS:000317736700013
ER

PT J
AU Sturtevant, BT
   da Cunha, MP
   Lad, RJ
AF Sturtevant, Blake T.
   da Cunha, Mauricio Pereira
   Lad, Robert J.
TI Properties of SiAlO2N protective coatings on surface acoustic wave
   devices
SO THIN SOLID FILMS
LA English
DT Article
DE Silicon aluminum oxynitride; Protective coatings; Elastic moduli;
   Surface acoustic wave devices
ID SIO2 FILM OVERLAYS; HIGH-TEMPERATURE; CERAMICS; CONSTANTS; QUARTZ
AB The use of a protective wear-resistant amorphous SiAlO2N thin film overlayer (amorphous SiO2-AlN alloy) on top of surface acoustic wave (SAW) devices is demonstrated on both quartz and langatate substrates. SiAlO2N films were deposited by RF magnetron sputtering onto sapphire substrates, quartz SAW devices, and langatate SAW devices. The SiAlO2N layer had an amorphous structure, a density of 2.8 +/- 0.1 g/cm(3), a roughness less than 1 nm as measured by X-ray reflectivity, and a dielectric permittivity of 7.5 +/- 0.05 as determined from microfabricated SiAlO2N capacitors. SiAlO2N elastic constants C-11 and C-44 were extracted using a numerical implementation of the matrix method for SAWs traveling in multilayer structures, and were found to be C-11 = 160 +/- 30 GPa and C-44 = 55 +/- 5 GPa. The operating frequencies of quartz SAW devices covered with SiAlO2N coatings were only slightly perturbed, but the temperature coefficient of delay (TCD) near 100 degrees C increased significantly by 250 ppm/degrees C. For langatate SAW devices, the SiAlO2N coating contributed an additional 8.5 dB to device transmission loss but the TCDs were minimally affected for SiAlO2N thicknesses up to 800 nm. This result suggests that langatate SAW devices for which temperature-frequency characteristics are important can be designed without consideration of the multi-layer structure, which greatly simplifies device design and modeling. (C) 2013 Elsevier B. V. All rights reserved.
C1 [Sturtevant, Blake T.; Lad, Robert J.] Univ Maine, Dept Phys & Astron, Orono, ME 04469 USA.
   [da Cunha, Mauricio Pereira] Univ Maine, Dept Elect & Comp Engn, Orono, ME 04469 USA.
   [Sturtevant, Blake T.; da Cunha, Mauricio Pereira; Lad, Robert J.] Univ Maine, Surface Sci & Technol Lab, Orono, ME 04469 USA.
RP Sturtevant, BT (reprint author), Los Alamos Natl Lab, POB 1663,MS D429, Los Alamos, NM 87545 USA.
EM bsturtev@lanl.gov
FU Air Force Office of Scientific Research (AFOSR) [FA9550-07-1-0519];
   National Science Foundation (NSF) [0840045]
FX This work was supported by the Air Force Office of Scientific Research
   (AFOSR) grant # FA9550-07-1-0519 (SAW device fabrication and
   characterization) and the National Science Foundation (NSF) grant #
   0840045 (SiAlON film development).
NR 30
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U1 1
U2 30
PU ELSEVIER SCIENCE SA
PI LAUSANNE
PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND
SN 0040-6090
J9 THIN SOLID FILMS
JI Thin Solid Films
PD MAY 1
PY 2013
VL 534
BP 198
EP 204
DI 10.1016/j.tsf.2013.02.062
PG 7
WC Materials Science, Multidisciplinary; Materials Science, Coatings &
   Films; Physics, Applied; Physics, Condensed Matter
SC Materials Science; Physics
GA 127ZD
UT WOS:000317736700034
ER

PT J
AU Waldmann, O
   Persaud, A
   Kapadia, R
   Takei, K
   Allen, FI
   Javey, A
   Schenkel, T
AF Waldmann, Ole
   Persaud, Arun
   Kapadia, Rehan
   Takei, Kuniharu
   Allen, Frances I.
   Javey, Ali
   Schenkel, Thomas
TI Effects of palladium coating on field-emission properties of carbon
   nanofibers in a hydrogen plasma
SO THIN SOLID FILMS
LA English
DT Article
DE Field emission; Carbon nanofibers; Metal coating
ID NANOTUBES
AB Results from electron field-emission studies using arrays of patterned carbon nanofiber bundles are reported. We find that the desired field-emission characteristics were not compromised when a protective coating consisting of a layer of palladium of 5 and 30 nm thickness was applied. Following exposure to a hydrogen plasma for several hours we find that the coatings impede plasma damage significantly, whereas the field-emission properties of uncoated nanofibers degraded much more rapidly. The results demonstrate that carbon nanofibers with protective conformal metal coatings can be integrated into harsh plasma environments enabling a range of applications such as field-ionization ion sources and advanced (micro)-plasma discharges. (C) 2013 Elsevier B.V. All rights reserved.
C1 [Waldmann, Ole; Persaud, Arun; Allen, Frances I.; Schenkel, Thomas] EO Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
   [Kapadia, Rehan; Takei, Kuniharu; Javey, Ali] Univ Calif Berkeley, Dept Elect Engn & Comp Sci, Berkeley, CA 94720 USA.
   [Allen, Frances I.] Univ Calif Berkeley, Dept Mat Sci & Engn, Berkeley, CA 94720 USA.
RP Persaud, A (reprint author), EO Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
EM APersaud@lbl.gov
RI Javey, Ali/B-4818-2013; Foundry, Molecular/G-9968-2014
FU Office of Proliferation Detection (DNN R&D) of the US Department of
   Energy at the Lawrence Berkeley National Laboratory [DE-AC02-05CHI1231];
   Office of Science, Office of Basic Energy Sciences of the U.S.
   Department of Energy [DE-AC02-05CH11231]
FX This work was supported by the Office of Proliferation Detection (DNN
   R&D) of the US Department of Energy at the Lawrence Berkeley National
   Laboratory under contract number DE-AC02-05CHI1231. The SEM and TEM
   works were performed at the National Center for Electron Microscopy,
   which is supported by the Office of Science, Office of Basic Energy
   Sciences of the U.S. Department of Energy under contract no.
   DE-AC02-05CH11231.
NR 15
TC 5
Z9 5
U1 1
U2 16
PU ELSEVIER SCIENCE SA
PI LAUSANNE
PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND
SN 0040-6090
J9 THIN SOLID FILMS
JI Thin Solid Films
PD MAY 1
PY 2013
VL 534
BP 488
EP 491
DI 10.1016/j.tsf.2013.02.053
PG 4
WC Materials Science, Multidisciplinary; Materials Science, Coatings &
   Films; Physics, Applied; Physics, Condensed Matter
SC Materials Science; Physics
GA 127ZD
UT WOS:000317736700080
ER

PT J
AU Difilippo, FC
AF Difilippo, Felix C.
TI Monte Carlo analysis of the propagation of fusion neutrons in a high
   enriched uranium system
SO ANNALS OF NUCLEAR ENERGY
LA English
DT Article
DE 14 MeV neutron; Pulse propagation; Neutron waves; 90% Enriched uranium;
   Monte Carlo methods; MCNP
ID ASSEMBLIES
AB Monte Carlo methods were used to calculate experimental observables related to the propagation of pulses of fusion neutrons in a compact and highly enriched (90%) subcritical system. These observables are the amplitude and phase of the Fourier transform of the detection rate of a He-3 moving detector, they correspond to the propagation of neutron waves excited by a sinusoidal neutron source. The MCNP code was used to model in great details all the heterogeneities of the experimental set up allowing in particular to have a good model of the neutron leakage in the direction perpendicular to the propagation.
   The very good results of the comparison with the experimental results contrast with previous comparisons with diffusion and transport theory models. The Monte Carlo modeling allows a full analysis of neutron wave experiment in space, time and energy allowing to define asymptotic regions where global complex wave vector exists. We propose to use the extensive literature of neutron wave experiments for further benchmark of MCNP. (C) 2012 Elsevier Ltd. All rights reserved.
C1 [Difilippo, Felix C.] Oak Ridge Natl Lab, Oak Ridge, TN USA.
EM pitagoras_km30@yahoo.com
NR 9
TC 0
Z9 0
U1 1
U2 6
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0306-4549
J9 ANN NUCL ENERGY
JI Ann. Nucl. Energy
PD MAY
PY 2013
VL 55
BP 126
EP 136
DI 10.1016/j.anucene.2012.12.004
PG 11
WC Nuclear Science & Technology
SC Nuclear Science & Technology
GA 120GC
UT WOS:000317157800016
ER

PT J
AU Romano, C
   D'Imperio, S
   Woyke, T
   Mavromatis, K
   Lasken, R
   Shock, EL
   McDermott, TR
AF Romano, Christine
   D'Imperio, Seth
   Woyke, Tanja
   Mavromatis, Konstantinos
   Lasken, Roger
   Shock, Everett L.
   McDermott, Timothy R.
TI Comparative Genomic Analysis of Phylogenetically Closely Related
   Hydrogenobaculum sp Isolates from Yellowstone National Park
SO APPLIED AND ENVIRONMENTAL MICROBIOLOGY
LA English
DT Article
ID ARSENITE OXIDASE GENES; MICROBIAL COMMUNITY STRUCTURE; PROVIDES
   ACQUIRED-RESISTANCE; LIVING TREE PROJECT; CRISPR-CAS SYSTEMS;
   RIBOSOMAL-RNA; PALINDROMIC REPEATS; THERMAL SPRINGS; SP-NOV.; DIVERSITY
AB We describe the complete genome sequences of four closely related Hydrogenobaculum sp. isolates (>= 99.7% 16S rRNA gene identity) that were isolated from the outflow channel of Dragon Spring (DS), Norris Geyser Basin, in Yellowstone National Park (YNP), WY. The genomes range in size from 1,552,607 to 1,552,931 bp, contain 1,667 to 1,676 predicted genes, and are highly syntenic. There are subtle differences among the DS isolates, which as a group are different from Hydrogenobaculum sp. strain Y04AAS1 that was previously isolated from a geographically distinct YNP geothermal feature. Genes unique to the DS genomes encode arsenite [As(III)] oxidation, NADH-ubiquinone-plastoquinone (complex I), NADH-ubiquinone oxidoreductase chain, a DNA photolyase, and elements of a type II secretion system. Functions unique to strain Y04AAS1 include thiosulfate metabolism, nitrate respiration, and mercury resistance determinants. DS genomes contain seven CRISPR loci that are almost identical but are different from the single CRISPR locus in strain Y04AAS1. Other differences between the DS and Y04AAS1 genomes include average nucleotide identity (94.764%) and percentage conserved DNA (80.552%). Approximately half of the genes unique to Y04AAS1 are predicted to have been acquired via horizontal gene transfer. Fragment recruitment analysis and marker gene searches demonstrated that the DS metagenome was more similar to the DS genomes than to the Y04AAS1 genome, but that the DS community is likely comprised of a continuum of Hydrogenobaculum genotypes that span from the DS genomes described here to an Y04AAS1-like organism, which appears to represent a distinct ecotype relative to the DS genomes characterized.
C1 [Romano, Christine; D'Imperio, Seth; McDermott, Timothy R.] Montana State Univ, Dept Land Resources & Environm Sci, Bozeman, MT 59717 USA.
   [Woyke, Tanja; Mavromatis, Konstantinos] DOE Joint Genome Inst, Walnut Creek, CA USA.
   [Lasken, Roger] J Craig Venter Inst, San Diego, CA USA.
   [Shock, Everett L.] Arizona State Univ, Dept Chem & Biochem, Tempe, AZ USA.
   [Shock, Everett L.] Arizona State Univ, Sch Earth & Space Explorat, Tempe, AZ USA.
RP McDermott, TR (reprint author), Montana State Univ, Dept Land Resources & Environm Sci, Bozeman, MT 59717 USA.
EM timmcder@montana.edu
FU U.S. National Aeronautics and Space Administration [NAG5-8807,
   NNG04GR46G]; U.S. Department of Energy Joint Genome Institute; Office of
   Science of the U.S. Department of Energy [DE-AC02-05CH11231]; U.S.
   National Science Foundation Research Coordination Network [BIO 0342269];
   Microbial Observatories Program [MCB-0621291]; Montana Agricultural
   Experiment Station [911310]; NSF [EAR-1123649]
FX This work was supported by the U.S. National Aeronautics and Space
   Administration (Exobiology Program NAG5-8807, NNG04GR46G), the U.S.
   Department of Energy Joint Genome Institute supported by the Office of
   Science of the U.S. Department of Energy under contract no.
   DE-AC02-05CH11231, the U.S. National Science Foundation Research
   Coordination Network (BIO 0342269) and Microbial Observatories Program
   (MCB-0621291), and the Montana Agricultural Experiment Station (project
   911310) to T. R. M. This work was also supported by NSF grant
   EAR-1123649 to E.L.S.
NR 71
TC 10
Z9 10
U1 0
U2 21
PU AMER SOC MICROBIOLOGY
PI WASHINGTON
PA 1752 N ST NW, WASHINGTON, DC 20036-2904 USA
SN 0099-2240
J9 APPL ENVIRON MICROB
JI Appl. Environ. Microbiol.
PD MAY
PY 2013
VL 79
IS 9
BP 2932
EP 2943
DI 10.1128/AEM.03591-12
PG 12
WC Biotechnology & Applied Microbiology; Microbiology
SC Biotechnology & Applied Microbiology; Microbiology
GA 124OT
UT WOS:000317474800010
PM 23435891
ER

PT J
AU Zhou, JL
   Olson, DG
   Argyros, DA
   Deng, Y
   van Gulik, WM
   van Dijken, JP
   Lynd, LR
AF Zhou, Jilai
   Olson, Daniel G.
   Argyros, D. Aaron
   Deng, Yu
   van Gulik, Walter M.
   van Dijken, Johannes P.
   Lynd, Lee R.
TI Atypical Glycolysis in Clostridium thermocellum
SO APPLIED AND ENVIRONMENTAL MICROBIOLOGY
LA English
DT Article
ID ENTAMOEBA-HISTOLYTICA; PYRUVATE-KINASE; SACCHAROMYCES-CEREVISIAE;
   CARBOHYDRATE-METABOLISM; CONTINUOUS-CULTURE; PROTEOMIC ANALYSIS; ACETATE
   KINASE; MALIC ENZYME; GLUCOSE; ETHANOL
AB Cofactor specificities of glycolytic enzymes in Clostridium thermocellum were studied with cellobiose-grown cells from batch cultures. Intracellular glucose was phosphorylated by glucokinase using GTP rather than ATP. Although phosphofructokinase typically uses ATP as a phosphoryl donor, we found only pyrophosphate (PPi)-linked activity. Phosphoglycerate kinase used both GDP and ADP as phosphoryl acceptors. In agreement with the absence of a pyruvate kinase sequence in the C. thermocellum genome, no activity of this enzyme could be detected. Also, the annotated pyruvate phosphate dikinase (ppdk) is not crucial for the generation of pyruvate from phosphoenolpyruvate (PEP), as deletion of the ppdk gene did not substantially change cellobiose fermentation. Instead pyruvate formation is likely to proceed via a malate shunt with GDP-linked PEP carboxykinase, NADH-linked malate dehydrogenase, and NADP-linked malic enzyme. High activities of these enzymes were detected in extracts of cellobiose-grown cells. Our results thus show that GTP is consumed while both GTP and ATP are produced in glycolysis of C. thermocellum. The requirement for PPi in this pathway can be satisfied only to a small extent by biosynthetic reactions, in contrast to what is generally assumed for a PPi-dependent glycolysis in anaerobic heterotrophs. Metabolic network analysis showed that most of the required PPi must be generated via ATP or GTP hydrolysis exclusive of that which happens during biosynthesis. Experimental proof for the necessity of an alternative mechanism of PPi generation was obtained by studying the glycolysis in washed-cell suspensions in which biosynthesis was absent. Under these conditions, cells still fermented cellobiose to ethanol.
C1 [Zhou, Jilai; Olson, Daniel G.; Deng, Yu; Lynd, Lee R.] Dartmouth Coll, Thayer Sch Engn, Hanover, NH 03755 USA.
   [Zhou, Jilai; Olson, Daniel G.; Deng, Yu; Lynd, Lee R.] BioEnergy Sci Ctr, Oak Ridge, TN USA.
   [Argyros, D. Aaron; Lynd, Lee R.] Mascoma Corp, Lebanon, NH USA.
   [van Gulik, Walter M.; van Dijken, Johannes P.] Delft Univ Technol, Delft, Netherlands.
RP Lynd, LR (reprint author), Dartmouth Coll, Thayer Sch Engn, Hanover, NH 03755 USA.
EM Lee.Lynd@Dartmouth.edu
RI Lynd, Lee/N-1260-2013; Olson, Daniel/F-2058-2011
OI Lynd, Lee/0000-0002-5642-668X; Olson, Daniel/0000-0001-5393-6302
FU Office of Biological and Environmental Research in the DOE Office of
   Science; Dartmouth College [4000115284, DE-AC05-00OR22725]; U.S.
   Department of Energy
FX The BioEnergy Science Center is a U.S. Department of Energy Bioenergy
   Research Center supported by the Office of Biological and Environmental
   Research in the DOE Office of Science.; The manuscript has been authored
   by Dartmouth College under sub-contract no. 4000115284 and contract no.
   DE-AC05-00OR22725 with the U.S. Department of Energy.
NR 59
TC 27
Z9 27
U1 1
U2 31
PU AMER SOC MICROBIOLOGY
PI WASHINGTON
PA 1752 N ST NW, WASHINGTON, DC 20036-2904 USA
SN 0099-2240
J9 APPL ENVIRON MICROB
JI Appl. Environ. Microbiol.
PD MAY
PY 2013
VL 79
IS 9
BP 3000
EP 3008
DI 10.1128/AEM.04037-12
PG 9
WC Biotechnology & Applied Microbiology; Microbiology
SC Biotechnology & Applied Microbiology; Microbiology
GA 124OT
UT WOS:000317474800017
PM 23435896
ER

PT J
AU Brubaker, TM
   Stewart, BW
   Capo, RC
   Schroeder, KT
   Chapman, EC
   Spivak-Birndorf, LJ
   Vesper, DJ
   Cardone, CR
   Rohar, PC
AF Brubaker, Tonya M.
   Stewart, Brian W.
   Capo, Rosemary C.
   Schroeder, Karl T.
   Chapman, Elizabeth C.
   Spivak-Birndorf, Lev J.
   Vesper, Dorothy J.
   Cardone, Carol R.
   Rohar, Paul C.
TI Coal fly ash interaction with environmental fluids: Geochemical and
   strontium isotope results from combined column and batch leaching
   experiments
SO APPLIED GEOCHEMISTRY
LA English
DT Article; Proceedings Paper
CT 9th International Symposium on Applied Isotope Geochemistry (AIG)
CY SEP 19-23, 2011
CL Tarragona, SPAIN
ID FUEL COMBUSTION RESIDUES; UTILIZATION BY-PRODUCTS; TRACE-ELEMENTS;
   INORGANIC CONSTITUENTS; MOBILIZATION; DISPOSAL; MOBILITY; WASTES; WATERS
AB The major element and Sr isotope systematics and geochemistry of coal fly ash and its interactions with environmental waters were investigated using laboratory flow-through column leaching experiments (sodium carbonate, acetic acid, nitric acid) and sequential batch leaching experiments (water, acetic acid, hydrochloric acid). Column leaching of Class F fly ash samples shows rapid release of most major elements early in the leaching procedure, suggesting an association of these elements with soluble and surface bound phases. Delayed release of certain elements (e.g., Al, Fe, Si) signals gradual dissolution of more resistant silicate or glass phases as leaching continues. Strontium isotope results from both column and batch leaching experiments show a marked increase in Sr-87/Sr-86 ratio with continued leaching, yielding a total range of values from 0.7107 to 0.7138. For comparison, the isotopic composition of fluid output from a fly ash impoundment in West Virginia falls in a narrow range around 0.7124. The experimental data suggest the presence of a more resistant, highly radiogenic silicate phase that survives the combustion process and is leached after the more soluble minerals are removed. Strontium isotopic homogenization of minerals in coal does not always occur during the combustion process, despite the high temperatures encountered in the boiler. Early-released Sr tends to be isotopically uniform; thus the Sr isotopic composition of fly ash could be distinguishable from other sources and is a useful tool for quantifying the possible contribution of fly ash leaching to the total dissolved load in natural surface and ground waters. (c) 2012 Elsevier Ltd. All rights reserved.
C1 [Brubaker, Tonya M.; Stewart, Brian W.; Capo, Rosemary C.; Chapman, Elizabeth C.; Spivak-Birndorf, Lev J.] Univ Pittsburgh, Dept Geol & Planetary Sci, Pittsburgh, PA 15260 USA.
   [Schroeder, Karl T.; Cardone, Carol R.; Rohar, Paul C.] US DOE, Natl Energy Technol Lab, Pittsburgh, PA 15236 USA.
   [Vesper, Dorothy J.] W Virginia Univ, Dept Geol & Geog, Morgantown, WV 26506 USA.
RP Stewart, BW (reprint author), Univ Pittsburgh, Dept Geol & Planetary Sci, Pittsburgh, PA 15260 USA.
EM bstewart@pitt.edu
NR 41
TC 8
Z9 9
U1 2
U2 29
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0883-2927
J9 APPL GEOCHEM
JI Appl. Geochem.
PD MAY
PY 2013
VL 32
SI SI
BP 184
EP 194
DI 10.1016/j.apgeochem.2012.09.001
PG 11
WC Geochemistry & Geophysics
SC Geochemistry & Geophysics
GA 123RN
UT WOS:000317408400018
ER

PT J
AU Williams, PT
   Thompson, PD
AF Williams, Paul T.
   Thompson, Paul D.
TI Walking Versus Running for Hypertension, Cholesterol, and Diabetes
   Mellitus Risk Reduction
SO ARTERIOSCLEROSIS THROMBOSIS AND VASCULAR BIOLOGY
LA English
DT Article
DE coronary heart disease; diabetes mellitus; exercise; high cholesterol;
   hypertension; physical activity; prevention; public health; running;
   walking
ID OF-SPORTS-MEDICINE; PHYSICAL-ACTIVITY; VIGOROUS EXERCISE; MODERATE
   INTENSITY; AEROBIC EXERCISE; MEDICATION USE; PUBLIC-HEALTH; BODY-WEIGHT;
   DISEASE; ADULTS
AB Objective-To test whether equivalent energy expenditure by moderate-intensity (eg, walking) and vigorous-intensity exercise (eg, running) provides equivalent health benefits.
   Approach and Results-We used the National Runners' (n=33 060) and Walkers' (n=15 945) Health Study cohorts to examine the effect of differences in exercise mode and thereby exercise intensity on coronary heart disease (CHD) risk factors. Baseline expenditure (metabolic equivant hours per day [METh/d]) was compared with self-reported, physician-diagnosed incident hypertension, hypercholesterolemia, diabetes mellitus, and CHD during 6.2 years follow-up. Running significantly decreased the risks for incident hypertension by 4.2% (P<10(-7)), hypercholesterolemia by 4.3% (P<10(-14)), diabetes mellitus by 12.1% (P<10(-5)), and CHD by 4.5% per METh/d (P=0.05). The corresponding reductions for walking were 7.2% (P<10(-6)), 7.0% (P<10(-8)), 12.3% (P<10(-4)), and 9.3% (P=0.01). Relative to <1.8 METh/d, the risk reductions for 1.8 to 3.6, 3.6 to 5.4, 5.4 to 7.2, and >= 7.2 METh/d were as follows: (1) 10.1%, 17.7%, 25.1%, and 34.9% from running and 14.0%, 23.8%, 21.8%, and 38.3% from walking for hypercholesterolemia; (2) 19.7%, 19.4%, 26.8%, and 39.8% from running and 14.7%, 19.1%, 23.6%, and 13.3% from walking for hypertension; and (3) 43.5%, 44.1%, 47.7%, and 68.2% from running, and 34.1%, 44.2% and 23.6% from walking for diabetes mellitus (walking >5.4 METh/d excluded for too few cases). The risk reductions were not significantly different for running than walking for diabetes mellitus (P=0.94), hypertension (P=0.06), or CHD (P=0.26), and only marginally greater for walking than running for hypercholesterolemia (P=0.04).
   Conclusions-Equivalent energy expenditures by moderate (walking) and vigorous (running) exercise produced similar risk reductions for hypertension, hypercholesterolemia, diabetes mellitus, and possibly CHD. (Arterioscler Thromb Vasc Biol. 2013; 33:1085-1091.)
C1 [Williams, Paul T.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Life Sci, Berkeley, CA 94720 USA.
   [Thompson, Paul D.] Hartford Hosp, Div Cardiol, Hartford, CT 06115 USA.
RP Williams, PT (reprint author), Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Life Sci, Donner 464,1 Cycloton Rd, Berkeley, CA 94720 USA.
EM ptwilliams@lbl.gov
FU National Heart, Lung, and Blood Institute [HL094717]; Department of
   Energy [DE-AC03-76SF00098]
FX This research was supported by grant HL094717 from the National Heart,
   Lung, and Blood Institute and was conducted at the Ernest Orlando
   Lawrence Berkeley National Laboratory (Department of Energy
   DE-AC03-76SF00098 to the University of California).
NR 38
TC 33
Z9 34
U1 2
U2 41
PU LIPPINCOTT WILLIAMS & WILKINS
PI PHILADELPHIA
PA 530 WALNUT ST, PHILADELPHIA, PA 19106-3621 USA
SN 1079-5642
J9 ARTERIOSCL THROM VAS
JI Arterioscler. Thromb. Vasc. Biol.
PD MAY
PY 2013
VL 33
IS 5
BP 1085
EP U538
DI 10.1161/ATVBAHA.112.300878
PG 17
WC Hematology; Peripheral Vascular Disease
SC Hematology; Cardiovascular System & Cardiology
GA 124PB
UT WOS:000317476000032
PM 23559628
ER

PT J
AU Volkow, ND
   Wang, GJ
   Tomasi, D
   Baler, RD
AF Volkow, Nora D.
   Wang, Gene-Jack
   Tomasi, Dardo
   Baler, Ruben D.
TI The Addictive Dimensionality of Obesity
SO BIOLOGICAL PSYCHIATRY
LA English
DT Review
DE Dopamine; drug addiction; obesity; prefrontal cortex; reward;
   self-control
ID VENTRAL TEGMENTAL AREA; BODY-MASS INDEX; DOPAMINE D2 RECEPTORS;
   HIGH-CALORIE FOODS; NUCLEUS-ACCUMBENS; DORSAL STRIATUM; SUBSTANCE USE;
   ORBITOFRONTAL CORTEX; PREFRONTAL CORTEX; GENETIC-VARIATION
AB Our brains are hardwired to respond and seek immediate rewards. Thus, it is not surprising that many people overeat, which in some can result in obesity, whereas others take drugs, which in some can result in addiction. Though food intake and body weight are under homeostatic regulation, when highly palatable food is available, the ability to resist the urge to eat hinges on self-control. There is no homeostatic regulator to check the intake of drugs (including alcohol); thus, regulation of drug consumption is mostly driven by self-control or unwanted effects (i.e., sedation for alcohol). Disruption in both the neurobiological processes that underlie sensitivity to reward and those that underlie inhibitory control can lead to compulsive food intake in some individuals and compulsive drug intake in others. There is increasing evidence that disruption of energy homeostasis can affect the reward circuitry and that overconsumption of rewarding food can lead to changes in the reward circuitry that result in compulsive food intake akin to the phenotype seen with addiction. Addiction research has produced new evidence that hints at significant commonalities between the neural substrates underlying the disease of addiction and at least some forms of obesity. This recognition has spurred a healthy debate to try and ascertain the extent to which these complex and dimensional disorders overlap and whether or not a deeper understanding of the crosstalk between the homeostatic and reward systems will usher in unique opportunities for prevention and treatment of both obesity and drug addiction.
C1 [Volkow, Nora D.; Baler, Ruben D.] NIDA, NIH, Bethesda, MD 20892 USA.
   [Volkow, Nora D.; Tomasi, Dardo] NIAAA, NIH, Bethesda, MD 90034 USA.
   [Wang, Gene-Jack] Brookhaven Natl Lab, Dept Med, Upton, NY 11973 USA.
RP Volkow, ND (reprint author), NIDA, 6001 Execut Blvd,Mail Drop Code 9581,Suite 5274, Bethesda, MD 20892 USA.
EM nvolkow@nida.nih.gov
RI Tomasi, Dardo/J-2127-2015
FU National Institutes of Health (Intramural Research Program of the
   National Institute on Alcoholism and Alcohol Abuse)
FX This research was supported by the National Institutes of Health
   (Intramural Research Program of the National Institute on Alcoholism and
   Alcohol Abuse). The authors report no biomedical financial interests or
   potential conflicts of interest.
NR 112
TC 104
Z9 106
U1 8
U2 121
PU ELSEVIER SCIENCE INC
PI NEW YORK
PA 360 PARK AVE SOUTH, NEW YORK, NY 10010-1710 USA
SN 0006-3223
J9 BIOL PSYCHIAT
JI Biol. Psychiatry
PD MAY 1
PY 2013
VL 73
IS 9
BP 811
EP 818
DI 10.1016/j.biopsych.2012.12.020
PG 8
WC Neurosciences; Psychiatry
SC Neurosciences & Neurology; Psychiatry
GA 126AO
UT WOS:000317583700008
PM 23374642
ER

PT J
AU Chien, CC
   Tseng, PY
   Chen, HH
   Hua, TE
   Chen, ST
   Chen, YY
   Leng, WH
   Wang, CH
   Hwu, Y
   Yin, GC
   Liang, KS
   Chen, FR
   Chu, YS
   Yeh, HI
   Yang, YC
   Yang, CS
   Zhang, GL
   Je, JH
   Margaritondo, G
AF Chien, C. C.
   Tseng, P. Y.
   Chen, H. H.
   Hua, T. E.
   Chen, S. T.
   Chen, Y. Y.
   Leng, W. H.
   Wang, C. H.
   Hwu, Y.
   Yin, G. C.
   Liang, K. S.
   Chen, F. R.
   Chu, Y. S.
   Yeh, H. I.
   Yang, Y. C.
   Yang, C. S.
   Zhang, G. L.
   Je, J. H.
   Margaritondo, G.
TI Imaging cells and sub-cellular structures with ultrahigh resolution
   full-field X-ray microscopy
SO BIOTECHNOLOGY ADVANCES
LA English
DT Article; Proceedings Paper
CT European-Science-Foundation (ESF) Exploratory Workshop
CY SEP 28-30, 2011
CL Bordeaux, FRANCE
SP European Sci Fdn (ESF)
DE X-ray microscopy; Phase contrast radiology; Fresnel phase zone plate;
   Subcellular organelle
ID EXIT WAVE RECONSTRUCTION; SCANNING ELECTRON-MICROSCOPY; PHASE-CONTRAST
   TOMOGRAPHY; E-BEAM LITHOGRAPHY; ZONE PLATES; GOLD NANOPARTICLES; LOCAL
   TOMOGRAPHY; RADIOLOGY; ORGANIZATION; FABRICATION
AB Our experimental results demonstrate that full-field hard-X-ray microscopy is finally able to investigate the internal structure of cells in tissues. This result was made possible by three main factors: the use of a coherent (synchrotron) source of X-rays, the exploitation of contrast mechanisms based on the real part of the refractive index and the magnification provided by high-resolution Fresnel zone-plate objectives. We specifically obtained high-quality microradiographs of human and mouse cells with 29 nm Rayleigh spatial resolution and verified that tomographic reconstruction could be implemented with a final resolution level suitable for subcellular features. We also demonstrated that a phase retrieval method based on a wave propagation algorithm could yield good subcellular images starting from a series of defocused microradiographs. The concluding discussion compares cellular and subcellular hard-X-ray microradiology with other techniques and evaluates its potential impact on biomedical research. (C) 2012 Elsevier Inc. All rights reserved.
C1 [Chien, C. C.; Tseng, P. Y.; Chen, H. H.; Hua, T. E.; Chen, S. T.; Chen, Y. Y.; Leng, W. H.; Wang, C. H.; Hwu, Y.] Acad Sinica, Inst Phys, Taipei 115, Taiwan.
   [Chien, C. C.; Hwu, Y.; Chen, F. R.] Natl Tsing Hua Univ, Hsinchu 300, Taiwan.
   [Hwu, Y.] Natl Taiwan Ocean Univ, Inst Optoelect Sci, Keelung 202, Taiwan.
   [Hwu, Y.] Natl Cheng Kung Univ, Adv Optoelect Technol Ctr, Tainan 701, Taiwan.
   [Yin, G. C.] Natl Synchrotron Radiat Res Ctr, Hsinchu 300, Taiwan.
   [Liang, K. S.] Natl Chiao Tung Univ, Dept Electrophys, Hsinchu 300, Taiwan.
   [Chu, Y. S.] Brookhaven Natl Lab, NSLS 2, Upton, NY 11973 USA.
   [Yeh, H. I.; Yang, Y. C.] Mackay Mem Hosp, Taipei 104, Taiwan.
   [Yang, C. S.] Natl Hlth Res Inst, Ctr Nanomed, Miaoli 350, Taiwan.
   [Zhang, G. L.] Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China.
   [Je, J. H.] Pohang Univ Sci & Technol, Xray Imaging Ctr, Pohang 790784, South Korea.
   [Margaritondo, G.] Ecole Polytech Fed Lausanne, CH-1015 Lausanne, Switzerland.
RP Hwu, Y (reprint author), Acad Sinica, Inst Phys, Taipei 115, Taiwan.
EM phhwu@sinica.edu.tw
RI TSENG, PANG-YEN/B-3218-2013; Chien, Chia-Chi/E-9932-2013; Yang,
   Chung-Shi/E-3999-2010; Wang, Changhai/A-9543-2009
OI Chien, Chia-Chi/0000-0001-8704-0336; Wang, Changhai/0000-0003-0137-7494
NR 49
TC 10
Z9 10
U1 1
U2 44
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0734-9750
EI 1873-1899
J9 BIOTECHNOL ADV
JI Biotechnol. Adv.
PD MAY-JUN
PY 2013
VL 31
IS 3
SI SI
BP 375
EP 386
DI 10.1016/j.biotechadv.2012.04.005
PG 12
WC Biotechnology & Applied Microbiology
SC Biotechnology & Applied Microbiology
GA 124CR
UT WOS:000317441900004
PM 22546483
ER

PT J
AU Wang, ZL
   Gao, K
   Chen, J
   Hong, YL
   Ge, X
   Wang, DJ
   Pan, ZY
   Zhu, PP
   Yun, WB
   Jacobsen, C
   Wu, ZY
AF Wang, Zhili
   Gao, Kun
   Chen, Jian
   Hong, Youli
   Ge, Xin
   Wang, Dajiang
   Pan, Zhiyun
   Zhu, Peiping
   Yun, Wenbing
   Jacobsen, Chris
   Wu, Ziyu
TI Advantages of intermediate X-ray energies in Zernike phase contrast
   X-ray microscopy
SO BIOTECHNOLOGY ADVANCES
LA English
DT Article; Proceedings Paper
CT European-Science-Foundation (ESF) Exploratory Workshop
CY SEP 28-30, 2011
CL Bordeaux, FRANCE
SP European Sci Fdn (ESF)
DE X-ray microscopy; Zernike phase contrast; Intermediate energy;
   Tomography; Radiation dose; Depth-of-focus
ID SCHIZOSACCHAROMYCES-POMBE; BIOLOGICAL SPECIMENS; SPATIAL-RESOLUTION; NM
   RESOLUTION; TOMOGRAPHY; TRANSMISSION; CELLS; SAMPLES; YEAST; SOIL
AB Understanding the hierarchical organizations of molecules and organelles within the interior of large eukaryotic cells is a challenge of fundamental interest in cell biology. Light microscopy is a powerful tool for observations of the dynamics of live cells, its resolution attainable is limited and insufficient. While electron microscopy can produce images with astonishing resolution and clarity of ultra-thin (<1 mu m thick) sections of biological specimens, many questions involve the three-dimensional organization of a cell or the interconnectivity of cells. X-ray microscopy offers superior imaging resolution compared to light microscopy, and unique capability of nondestructive three-dimensional imaging of hydrated unstained biological cells, complementary to existing light and electron microscopy.
   Until now, X-ray microscopes operating in the "water window" energy range between carbon and oxygen k-shell absorption edges have produced outstanding 3D images of cryo-preserved cells. The relatively low X-ray energy (<540 eV) of the water window imposes two important limitations: limited penetration (<10 mu m) not suitable for imaging larger cells or tissues, and small depth of focus (DoF) for high resolution 3D imaging (e.g., similar to 1 mu m DoF for 20 nm resolution). An X-ray microscope operating at intermediate energy around 2.5 key using Zernike phase contrast can overcome the above limitations and reduces radiation dose to the specimen. Using a hydrated model cell with an average chemical composition reported in literature, we calculated the image contrast and the radiation dose for absorption and Zernike phase contrast, respectively. The results show that an X-ray microscope operating at similar to 2.5 key using Zernike phase contrast offers substantial advantages in terms of specimen size, radiation dose and depth-of-focus. (C) 2012 Elsevier Inc. All rights reserved.
C1 [Wang, Zhili; Gao, Kun; Chen, Jian; Ge, Xin; Wang, Dajiang; Pan, Zhiyun; Wu, Ziyu] Univ Sci & Technol China, Natl Synchrotron Radiat Lab, Hefei 230026, Peoples R China.
   [Wang, Zhili; Hong, Youli; Zhu, Peiping; Wu, Ziyu] Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China.
   [Yun, Wenbing] Xradia Inc, Pleasanton, CA 94588 USA.
   [Jacobsen, Chris] Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA.
   [Jacobsen, Chris] Northwestern Univ, Evanston, IL USA.
RP Wu, ZY (reprint author), Univ Sci & Technol China, Natl Synchrotron Radiat Lab, Hefei 230026, Peoples R China.
EM wuzy@ustc.edu.cn
RI Jacobsen, Chris/E-2827-2015
OI Jacobsen, Chris/0000-0001-8562-0353
NR 40
TC 7
Z9 7
U1 2
U2 43
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0734-9750
J9 BIOTECHNOL ADV
JI Biotechnol. Adv.
PD MAY-JUN
PY 2013
VL 31
IS 3
SI SI
BP 387
EP 392
DI 10.1016/j.biotechadv.2012.04.001
PG 6
WC Biotechnology & Applied Microbiology
SC Biotechnology & Applied Microbiology
GA 124CR
UT WOS:000317441900005
PM 22521962
ER

PT J
AU Lau, SCK
   Zhang, R
   Brodie, EL
   Piceno, YM
   Andersen, G
   Liu, WT
AF Lau, Stanley C. K.
   Zhang, Rui
   Brodie, Eoin L.
   Piceno, Yvette M.
   Andersen, Gary
   Liu, Wen-Tso
TI Biogeography of bacterioplankton in the tropical seawaters of Singapore
SO FEMS MICROBIOLOGY ECOLOGY
LA English
DT Article
DE bacterioplankton; biogeography; PhyloChip; phylogenetic diversity;
   Singapore seawaters
ID 16S RIBOSOMAL-RNA; SOUTH CHINA SEA; BACTERIAL COMMUNITIES; MICROBIAL
   DIVERSITY; MARINE-ENVIRONMENT; HARBOR; OCEAN; POPULATIONS; GRADIENT
AB Knowledge about the biogeography of marine bacterioplankton on the global scale in general and in Southeast Asia in particular has been scarce. This study investigated the biogeography of bacterioplankton community in Singapore seawaters. Twelve stations around Singapore island were sampled on different schedules over 1year. Using PCR-DNA fingerprinting, DNA cloning and sequencing, and microarray hybridization of the 16S rRNA genes, we observed clear spatial variations of bacterioplankton diversity within the small area of the Singapore seas. Water samples collected from the Singapore Strait (south) throughout the year were dominated by DNA sequences affiliated with Cyanobacteria and Alphaproteobacteria that were believed to be associated with the influx of water from the open seas in Southeast Asia. On the contrary, water in the relatively polluted Johor Strait (north) were dominated by Betaproteobacteria, Gammaproteobacteria, and Bacteroidetes and that were presumably associated with river discharge and the relatively eutrophic conditions of the waterway. Bacterioplankton diversity was temporally stable, except for the episodic surge of Pseudoalteromonas, associated with algal blooms. Overall, these results provide valuable insights into the diversity of bacterioplankton communities in Singapore seas and the possible influences of hydrological conditions and anthropogenic activities on the dynamics of the communities.
C1 [Lau, Stanley C. K.; Zhang, Rui; Liu, Wen-Tso] Natl Univ Singapore, Div Environm Sci & Engn, Singapore 117548, Singapore.
   [Zhang, Rui] Xiamen Univ, State Key Lab Marine Environm Sci, Xiamen, Peoples R China.
   [Brodie, Eoin L.; Piceno, Yvette M.; Andersen, Gary] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Earth Sci, Dept Ecol, Berkeley, CA 94720 USA.
   [Liu, Wen-Tso] Univ Illinois, Dept Civil & Environm Engn, Urbana, IL 61801 USA.
RP Liu, WT (reprint author), Univ Illinois, Dept Civil & Environm Engn, Urbana, IL 61801 USA.
EM wtliu@illinois.edu
RI Liu, Wen-Tso/C-8788-2011; Brodie, Eoin/A-7853-2008; Piceno,
   Yvette/I-6738-2016; Andersen, Gary/G-2792-2015
OI Liu, Wen-Tso/0000-0002-8700-9803; Brodie, Eoin/0000-0002-8453-8435;
   Piceno, Yvette/0000-0002-7915-4699; Andersen, Gary/0000-0002-1618-9827
FU National University of Singapore; U.S. Department of Energy
   [DE-AC02-05CH11231]; Program for New Century Excellent Talents in Xiamen
   University [NCET 09-0683]
FX This work was supported by a research grant of National University of
   Singapore to Wen-Tso Liu. Part of this work was performed at Lawrence
   Berkeley National Laboratory, supported by the U.S. Department of Energy
   under Contract No. DE-AC02-05CH11231. Rui Zhang was partially supported
   by Program for New Century Excellent Talents in Xiamen University (NCET
   09-0683).
NR 34
TC 2
Z9 3
U1 4
U2 49
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 0168-6496
J9 FEMS MICROBIOL ECOL
JI FEMS Microbiol. Ecol.
PD MAY
PY 2013
VL 84
IS 2
BP 259
EP 269
DI 10.1111/1574-6941.12057
PG 11
WC Microbiology
SC Microbiology
GA 123YW
UT WOS:000317430200004
PM 23237658
ER

PT J
AU Abelquist, EW
   King, DA
   Miller, LF
   Viars, JA
AF Abelquist, Eric W.
   King, David A.
   Miller, Laurence F.
   Viars, James A.
TI An Approach for Addressing Hard-to-Detect Hot Spots
SO HEALTH PHYSICS
LA English
DT Article
DE operational topics; chemical toxicity; contamination; environmental;
   environmental assessment
AB The Multi-Agency Radiation Survey and Site Investigation Manual (MARSSIM) survey approach is comprised of systematic random sampling coupled with radiation scanning to assess acceptability of potential hot spots. Hot spot identification for some radionuclides may not be possible due to the very weak gamma or x-ray radiation they emit these hard-to-detect nuclides are unlikely to be identified by field scans. Similarly, scanning technology is not yet available for chemical contamination. For both hard-to-detect nuclides and chemical contamination, hot spots are only identified via volumetric sampling. The remedial investigation and cleanup of sites under the Comprehensive Environmental Response, Compensation, and Liability Act typically includes the collection of samples over relatively large exposure units, and concentration limits are applied assuming the contamination is more or less uniformly distributed. However, data collected from contaminated sites demonstrate contamination is often highly localized. These highly localized areas, or hot spots, will only be identified if sample densities are high or if the environmental characterization program happens to sample directly from the hot spot footprint. This paper describes a Bayesian approach for addressing hard-to-detect nuclides and chemical hot spots. The approach begins using available data (e.g., as collected using the standard approach) to predict the probability that an unacceptable hot spot is present somewhere in the exposure unit. This Bayesian approach may even be coupled with the graded sampling approach to optimize hot spot characterization. Once the investigator concludes that the presence of hot spots is likely, then the surveyor should use the data quality objectives process to generate an appropriate sample campaign that optimizes the identification of risk-relevant hot spots. Health Phys. 104(Supplement 2): S52-S59; 2013
C1 [Abelquist, Eric W.; King, David A.; Viars, James A.] Oak Ridge Associated Univ, Oak Ridge, TN 37831 USA.
   [Miller, Laurence F.] Univ Tennessee, Knoxville, TN USA.
RP Abelquist, EW (reprint author), Oak Ridge Associated Univ, POB 117,MS 22, Oak Ridge, TN 37831 USA.
EM eric.abelquist@orau.org
NR 8
TC 0
Z9 0
U1 1
U2 2
PU LIPPINCOTT WILLIAMS & WILKINS
PI PHILADELPHIA
PA 530 WALNUT ST, PHILADELPHIA, PA 19106-3621 USA
SN 0017-9078
EI 1538-5159
J9 HEALTH PHYS
JI Health Phys.
PD MAY
PY 2013
VL 104
IS 5
SU 2
BP S52
EP S59
PG 8
WC Environmental Sciences; Public, Environmental & Occupational Health;
   Nuclear Science & Technology; Radiology, Nuclear Medicine & Medical
   Imaging
SC Environmental Sciences & Ecology; Public, Environmental & Occupational
   Health; Nuclear Science & Technology; Radiology, Nuclear Medicine &
   Medical Imaging
GA 127LP
UT WOS:000317700800002
PM 23528274
ER

PT J
AU Kamboj, S
   Yu, C
   Johnson, R
AF Kamboj, Sunita
   Yu, Charley
   Johnson, Robert
TI Development of DCGLs By Using Both Probabilistic and Deterministic
   Analyses in RESRAD (Onsite) and RESRAD-OFFSITE Codes
SO HEALTH PHYSICS
LA English
DT Article
DE operational topics; environmental transport; modeling, dose assessment;
   radioactivity, residual
AB The Derived Concentration Guideline Levels for two building areas previously used in waste processing and storage at Argonne National Laboratory were developed using both probabilistic and deterministic radiological environmental pathway analysis. Four scenarios were considered. The two current uses considered were on-site industrial use and off-site residential use with farming. The two future uses (i.e., after an institutional control period of 100 y) were on-site recreational use and on-site residential use with farming. The RESRAD-OFFSITE code was used for the current-use off-site residential/farming scenario and RESRAD (onsite) was used for the other three scenarios. Contaminants of concern were identified from the past operations conducted in the buildings and the actual characterization done at the site. Derived Concentration Guideline Levels were developed for all four scenarios using deterministic and probabilistic approaches, which include both "peak-of-the-means" and "mean-of-the-peaks" analyses. The future-use on-site residential/farming scenario resulted in the most restrictive Derived Concentration Guideline Levels for most radionuclides. Health Phys. 104(Supplement 2):S68-S75; 2013
C1 [Kamboj, Sunita; Yu, Charley; Johnson, Robert] Argonne Natl Lab, Argonne, IL 60439 USA.
RP Kamboj, S (reprint author), Argonne Natl Lab, Bldg 240,9700 South Cass Ave, Argonne, IL 60439 USA.
EM skamboj@anl.gov
FU U.S. department of Energy [DE-AC02-06CH11357]
FX This work was supported by the U.S. department of Energy, Assistant
   Secretary for Environmental Management, under Contract No.
   DE-AC02-06CH11357.
NR 15
TC 0
Z9 0
U1 1
U2 6
PU LIPPINCOTT WILLIAMS & WILKINS
PI PHILADELPHIA
PA 530 WALNUT ST, PHILADELPHIA, PA 19106-3621 USA
SN 0017-9078
EI 1538-5159
J9 HEALTH PHYS
JI Health Phys.
PD MAY
PY 2013
VL 104
IS 5
SU 2
BP S68
EP S75
PG 8
WC Environmental Sciences; Public, Environmental & Occupational Health;
   Nuclear Science & Technology; Radiology, Nuclear Medicine & Medical
   Imaging
SC Environmental Sciences & Ecology; Public, Environmental & Occupational
   Health; Nuclear Science & Technology; Radiology, Nuclear Medicine &
   Medical Imaging
GA 127LP
UT WOS:000317700800004
PM 23528276
ER

PT J
AU Felix, S
   Horowitz, R
AF Felix, Sarah
   Horowitz, Roberto
TI Integration of Thin Film Strain Sensors Into Hard Drives for Active
   Feedback Vibration Suppression
SO IEEE SENSORS JOURNAL
LA English
DT Article
DE Hard disk drive (HDD); piezoelectric thin films; smart structures;
   vibration control
ID ALUMINUM NITRIDE; DISK DRIVES; DUAL-STAGE; SUSPENSION; MEMS; PZT
AB The work described in this paper demonstrates a novel application of piezoelectric thin-film sensing technology by incorporating ZnO strain sensors into a hard disk drive (HDD) and deploying the sensors in a high-sample-rate feedback controller to suppress vibrations. First, thin-film ZnO sensors are fabricated directly onto a HDD suspension component, which was a unique and challenging process since the substrate is steel. The sensor geometry is designed to be selective to vibration modes that contribute to displacement in the off-track direction. The smart suspension structure is then packaged into an experimental HDD, along with a miniaturized conditioning circuit and lead zirconate titanate (PZT) actuation elements. The sensors demonstrate excellent sensitivity and selectivity to the desired modes. Finally, an active mode damping controller is implemented on the instrumented, PZT-actuated prototype. Feedback control using the thin film sensors effectively suppresses the high-frequency sway mode of the suspension.
C1 [Felix, Sarah] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
   [Horowitz, Roberto] Univ Calif Berkeley, Dept Mech Engn, Berkeley, CA 94720 USA.
RP Felix, S (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
EM sarahfelix@cal.berkeley.edu; horowitz@me.berkeley.edu
FU National Science Foundation [CMS-0428917]; Information Storage Industry
   Consortium; Computer Mechanics Laboratory at the University of
   California, Berkeley
FX Manuscript received June 5, 2012; revised November 9, 2012; accepted
   December 3, 2012. Date of publication December 21, 2012; date of current
   version April 2, 2013. This work was supported in part by the National
   Science Foundation under Grant CMS-0428917, the Information Storage
   Industry Consortium, and the Computer Mechanics Laboratory at the
   University of California, Berkeley. The associate editor coordinating
   the review of this paper and approving it for publication was Prof.
   Kiseon Kim.
NR 33
TC 0
Z9 0
U1 1
U2 27
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 1530-437X
J9 IEEE SENS J
JI IEEE Sens. J.
PD MAY
PY 2013
VL 13
IS 5
BP 1708
EP 1715
DI 10.1109/JSEN.2012.2235177
PG 8
WC Engineering, Electrical & Electronic; Instruments & Instrumentation;
   Physics, Applied
SC Engineering; Instruments & Instrumentation; Physics
GA 124SR
UT WOS:000317486700008
ER

PT J
AU Dursch, TJ
   Ciontea, MA
   Trigub, GJ
   Radke, CJ
   Weber, AZ
AF Dursch, T. J.
   Ciontea, M. A.
   Trigub, G. J.
   Radke, C. J.
   Weber, A. Z.
TI Pseudo-isothermal ice-crystallization kinetics in the gas-diffusion
   layer of a fuel cell from differential scanning calorimetry
SO INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
LA English
DT Article
DE Crystallization; Kinetics; Solidification; Heat transfer; Differential
   scanning calorimetry; Gas-diffusion layer
ID NONISOTHERMAL CRYSTALLIZATION; POLYMER CRYSTALLIZATION; NUCLEATION;
   POLYESTERS; MELT
AB Non-isothermal ice-crystallization kinetics in the fibrous gas-diffusion layer (GDL) of a proton-exchange-membrane fuel cell is investigated using differential scanning calorimetry (DSC). Non-isothermal ice-crystallization rates and ice-crystallization temperatures are obtained from heat-flow measurements in a water-saturated commercial GDL at cooling rates of 2.5, 5, 10, and 25 K/min. Our previously developed isothermal ice-crystallization rate expression is extended to non-isothermal crystallization to predict ice-crystallization kinetics in a GDL at various cooling rates. Agreement between DSC experimental results and theory is good. Both show that as the cooling rate increases, ice-crystallization rates increase and crystallization temperatures decrease monotonically. Importantly, we find that the cooling rate during crystallization has a negligible effect on the crystallization rate when crystallization times are much faster than the time to decrease the sample temperature by the subcooling. Based on this finding, we propose a pseudo-isothermal method for obtaining non-isothermal crystallization kinetics using isothermal crystallization kinetics evaluated at the non-isothermal crystallization temperature. (C) 2012 Elsevier Ltd. All rights reserved.
C1 [Dursch, T. J.; Ciontea, M. A.; Trigub, G. J.; Radke, C. J.] Univ Calif Berkeley, Chem & Biomol Engn Dept, Berkeley, CA 94720 USA.
   [Dursch, T. J.; Weber, A. Z.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Environm Energy Technol Div, Berkeley, CA 94720 USA.
   [Radke, C. J.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Earth Sci, Berkeley, CA 94720 USA.
RP Radke, CJ (reprint author), Univ Calif Berkeley, Chem & Biomol Engn Dept, 101E Gilman, Berkeley, CA 94720 USA.
EM radke@berkeley.edu
OI Weber, Adam/0000-0002-7749-1624
FU Energy Efficiency and Renewable Energy, Fuel Cell Technologies Office of
   the U. S. Department of Energy [DE-AC02-05CH11231]
FX This work was funded by the Assistant Secretary for Energy Efficiency
   and Renewable Energy, Fuel Cell Technologies Office of the U. S.
   Department of Energy under contract number DE-AC02-05CH11231. We thank
   the fuel-cell team Los Alamos National Laboratory for providing
   mercury-porosimetry-intrusion data.
NR 34
TC 5
Z9 5
U1 1
U2 10
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0017-9310
J9 INT J HEAT MASS TRAN
JI Int. J. Heat Mass Transf.
PD MAY
PY 2013
VL 60
BP 450
EP 458
DI 10.1016/j.ijheatmasstransfer.2012.12.048
PG 9
WC Thermodynamics; Engineering, Mechanical; Mechanics
SC Thermodynamics; Engineering; Mechanics
GA 125IW
UT WOS:000317534500050
ER

PT J
AU Hafez, MA
   Mamun, MA
   Elmustafa, AA
   Elsayed-Ali, HE
AF Hafez, M. A.
   Mamun, M. A.
   Elmustafa, A. A.
   Elsayed-Ali, H. E.
TI Structural and nanomechanical properties of InN films grown on Si(1 0 0)
   by femtosecond pulsed laser deposition
SO JOURNAL OF PHYSICS D-APPLIED PHYSICS
LA English
DT Article
ID MOLECULAR-BEAM EPITAXY; VAPOR-PHASE EPITAXY; NITRIDE THIN-FILMS; INDIUM
   NITRIDE; BAND-GAP; HETEROEPITAXIAL GROWTH; ELECTRON-TRANSPORT;
   ELASTIC-MODULUS; WURTZITE INN; SURFACE
AB The structural and nanomechanical properties of InN films grown on Si(1 0 0) using femtosecond pulsed laser deposition were studied for different growth conditions. Atomic nitrogen was generated by either thermal cracking or laser-induced breakdown (LIB) of ammonia. Optical emission spectroscopy was conducted on the laser plasma and used to observe atomic nitrogen formation. An indium buffer layer was initially grown on the Si substrate at low temperature. The surface structure and morphology were investigated by in situ reflection high-energy electron diffraction, ex situ atomic force microscopy and x-ray diffraction (XRD). The results show that the initial buffer indium layers were terminated with the In(2 x 1) structure and had a smooth surface. With increased coverage, the growth mode developed from two-dimensional layers to three-dimensional islands. At room temperature (RT), formation of submicrometre islands resulted in mixed crystal structure of In and InN. As the substrate temperature was increased to 250-350 degrees C, the crystal structure was found to be dominated by fewer In and more InN, with only InN formed at 350 degrees C. The XRD patterns show that the grown InN films have wurtzite crystal structure. The film hardness near the surface was observed to increase from less than 1 GPa, characteristic of In for the sample grown at RT using the thermal cracker, to a hardness of 11 GPa at 30 nm from surface, characteristic of InN for samples grown at 350 degrees C by LIB. The hardness at deep indents reaches the hardness of the Si substrate of similar to 12 GPa.
C1 [Hafez, M. A.; Mamun, M. A.; Elmustafa, A. A.; Elsayed-Ali, H. E.] Thomas Jefferson Natl Accelerator Facil, Appl Res Ctr, Newport News, VA 23606 USA.
   [Mamun, M. A.; Elmustafa, A. A.] Old Dominion Univ, Dept Mech & Aerosp Engn, Norfolk, VA 23529 USA.
   [Elsayed-Ali, H. E.] Old Dominion Univ, Dept Elect & Comp Engn, Norfolk, VA 23529 USA.
   [Hafez, M. A.] Cairo Univ, Natl Inst Laser Enhanced Sci, Giza, Egypt.
RP Hafez, MA (reprint author), Thomas Jefferson Natl Accelerator Facil, Appl Res Ctr, Newport News, VA 23606 USA.
EM helsayed@odu.edu
FU US Department of Energy, Division of Material Sciences
   [DE-FG02-97ER45625]; National Science Foundation (NSF) [0821180,
   1039463]
FX This material is based on work supported by the US Department of Energy,
   Division of Material Sciences, under Grant No DE-FG02-97ER45625 and the
   National Science Foundation (NSF) Grant No 0821180. Partial support by
   NSF Grant No 1039463 is acknowledged.
NR 54
TC 3
Z9 3
U1 2
U2 24
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0022-3727
EI 1361-6463
J9 J PHYS D APPL PHYS
JI J. Phys. D-Appl. Phys.
PD MAY 1
PY 2013
VL 46
IS 17
AR 175301
DI 10.1088/0022-3727/46/17/175301
PG 8
WC Physics, Applied
SC Physics
GA 123KX
UT WOS:000317389600015
ER

PT J
AU Forssen, C
   Roth, R
   Navratil, P
AF Forssen, C.
   Roth, R.
   Navratil, P.
TI Systematics of 2(+) states in C isotopes from the no-core shell model
SO JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS
LA English
DT Article
ID NUCLEI
AB We study low-lying states of even carbon isotopes in the range A = 10-20 within the large-scale no-core shell model. Using several accurate nucleon-nucleon (NN) as well as NN plus three-nucleon (NNN) interactions, we calculate excitation energies of the lowest 2(+) state, the electromagnetic B(E2; 2(1)(+) -> 0(1)(+)) transition rates, and the 2(1)(+) quadrupole moments as well as selected electromagnetic transitions among other states. Recent experimental campaigns to measure 2(+)-state lifetimes indicate an interesting evolution of nuclear structure that pose a challenge to reproduce theoretically from first principles. Our calculations do not include any effective charges or other fitting parameters. However, calculated results extrapolated to infinite model spaces are also presented. The model-dependence of those results is discussed. Overall, we find good agreement with the experimentally observed trends, although our extrapolated B(E2; 2(1)(+) -> 0(1)(+)) value for C-16 is lower compared to the most recent measurements. Relative transition strengths from higher excited states are investigated and the influence of NNN forces is discussed. In particular for 16C we find a remarkable sensitivity of the transition rates from higher excited states to the details of the nuclear interactions.
C1 [Forssen, C.] Chalmers, SE-41296 Gothenburg, Sweden.
   [Roth, R.] Tech Univ Darmstadt, Inst Kernphys, D-64289 Darmstadt, Germany.
   [Navratil, P.] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA.
RP Forssen, C (reprint author), Chalmers, SE-41296 Gothenburg, Sweden.
EM christian.forssen@chalmers.se
RI Forssen, Christian/C-6093-2008; Roth, Robert/B-6502-2008
OI Forssen, Christian/0000-0003-3458-0480; 
FU European Research Council (ERC) [240603]; Swedish Research Council
   [2007-4078]; Deutsche Forschungsgemeinschaft [SFB 634]; Helmholtz
   International Center for FAIR (HIC for FAIR); BMBF [06DA9040I]; Natural
   Sciences and Engineering Research Council of Canada (NSERC)
   [401945-2011]; National Research Council Canada; LLNL
   [DE-AC52-07NA27344]
FX We would like to thank A Macchiavelli, P Fallon, M Wiedeking, and M
   Petri for many useful discussions. Support from the European Research
   Council under the FP7 (ERC grant agreement no. 240603), the Swedish
   Research Council (dnr. 2007-4078), the Deutsche Forschungsgemeinschaft
   through contract SFB 634, the Helmholtz International Center for FAIR
   (HIC for FAIR), and the BMBF (06DA9040I) is acknowledged. Support from
   the Natural Sciences and Engineering Research Council of Canada (NSERC)
   grant no. 401945-2011 is acknowledged. TRIUMF receives funding via a
   contribution through the National Research Council Canada. Computing
   resources have been provided by the Julich Supercomputing Centre and by
   LOEWE-CSC. Prepared in part by LLNL under contract DE-AC52-07NA27344.
NR 31
TC 6
Z9 6
U1 0
U2 12
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0954-3899
EI 1361-6471
J9 J PHYS G NUCL PARTIC
JI J. Phys. G-Nucl. Part. Phys.
PD MAY
PY 2013
VL 40
IS 5
AR 055105
DI 10.1088/0954-3899/40/5/055105
PG 15
WC Physics, Nuclear; Physics, Particles & Fields
SC Physics
GA 124LT
UT WOS:000317466300014
ER

PT J
AU Vila-Comamala, J
   Wojcik, M
   Diaz, A
   Guizar-Sicairos, M
   Kewish, CM
   Wang, S
   David, C
AF Vila-Comamala, Joan
   Wojcik, Michael
   Diaz, Ana
   Guizar-Sicairos, Manuel
   Kewish, Cameron M.
   Wang, Steve
   David, Christian
TI Angular spectrum simulation of X-ray focusing by Fresnel zone plates
SO JOURNAL OF SYNCHROTRON RADIATION
LA English
DT Article
DE diffractive X-ray optics; X-ray wavefield modeling; angular spectrum
   method; Fresnel zone plate stacking
ID MICROSCOPY; OPTICS
AB A computing simulation routine to model any type of circularly symmetric diffractive X-ray element has been implemented. The wavefield transmitted beyond the diffractive structures is numerically computed by the angular spectrum propagation method to an arbitrary propagation distance. Cylindrical symmetry is exploited to reduce the computation and memory requirements while preserving the accuracy of the numerical calculation through a quasi-discrete Hankel transform algorithm, an approach described by Guizar-Sicairos & Gutierrez-Vega [J. Opt. Soc. Am. A, (2004), 21, 53-58]. In particular, the code has been used to investigate the requirements for the stacking of two high-resolution Fresnel zone plates with an outermost zone width of 20 nm.
C1 [Vila-Comamala, Joan; Diaz, Ana; Guizar-Sicairos, Manuel; David, Christian] Paul Scherrer Inst, CH-5232 Villigen, Switzerland.
   [Vila-Comamala, Joan; Wojcik, Michael; Wang, Steve] Argonne Natl Lab, Argonne, IL 60439 USA.
   [Kewish, Cameron M.] Synchrotron SOLEIL, F-91192 Gif Sur Yvette, France.
RP Vila-Comamala, J (reprint author), Paul Scherrer Inst, CH-5232 Villigen, Switzerland.
EM joan.vila.comamala@gmail.com
RI Diaz, Ana/I-4139-2013; Guizar-Sicairos, Manuel/I-4899-2013; Kewish,
   Cameron/H-5103-2011; Vila-Comamala, Joan/E-2106-2017
OI Diaz, Ana/0000-0003-0479-4752; Kewish, Cameron/0000-0001-6242-7059; 
FU US Department of Energy, Basic Energy Sciences, Office of Science
   [DE-AC02-06CH11357]
FX This work is supported by the US Department of Energy, Basic Energy
   Sciences, Office of Science, under contract No. DE-AC02-06CH11357.
NR 35
TC 13
Z9 13
U1 0
U2 13
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 0909-0495
J9 J SYNCHROTRON RADIAT
JI J. Synchrot. Radiat.
PD MAY
PY 2013
VL 20
BP 397
EP 404
DI 10.1107/S090904951300263X
PN 3
PG 8
WC Instruments & Instrumentation; Optics; Physics, Applied
SC Instruments & Instrumentation; Optics; Physics
GA 126HP
UT WOS:000317604800001
PM 23592617
ER

PT J
AU Escudero, C
   Jiang, P
   Pach, E
   Borondics, F
   West, MW
   Tuxen, A
   Chintapalli, M
   Carenco, S
   Guo, JH
   Salmeron, M
AF Escudero, Carlos
   Jiang, Peng
   Pach, Elzbieta
   Borondics, Ferenc
   West, Mark W.
   Tuxen, Anders
   Chintapalli, Mahati
   Carenco, Sophie
   Guo, Jinghua
   Salmeron, Miquel
TI A reaction cell with sample laser heating for in situ soft X-ray
   absorption spectroscopy studies under environmental conditions
SO JOURNAL OF SYNCHROTRON RADIATION
LA English
DT Article
DE in situ; laser heating system; soft X-ray absorption spectroscopy;
   heterogeneous catalysis; gas cell; nanoparticles
ID PHOTOELECTRON-SPECTROSCOPY; CATALYSIS RESEARCH; GAS; NANOPARTICLES; SIZE
AB A miniature (1 ml volume) reaction cell with transparent X-ray windows and laser heating of the sample has been designed to conduct X-ray absorption spectroscopy studies of materials in the presence of gases at atmospheric pressures. Heating by laser solves the problems associated with the presence of reactive gases interacting with hot filaments used in resistive heating methods. It also facilitates collection of a small total electron yield signal by eliminating interference with heating current leakage and ground loops. The excellent operation of the cell is demonstrated with examples of CO and H-2 Fischer-Tropsch reactions on Co nanoparticles.
C1 [Escudero, Carlos; Pach, Elzbieta; Tuxen, Anders; Chintapalli, Mahati; Carenco, Sophie; Salmeron, Miquel] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94720 USA.
   [Jiang, Peng; Borondics, Ferenc] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Chem Sci, Berkeley, CA 94720 USA.
   [West, Mark W.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Engn, Berkeley, CA 94720 USA.
   [Chintapalli, Mahati] Univ Calif Berkeley, Mat Sci & Engn Dept, Berkeley, CA 94720 USA.
   [Guo, Jinghua] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Adv Light Source, Berkeley, CA 94720 USA.
RP Salmeron, M (reprint author), Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Mat Sci, 1 Cyclotron Rd, Berkeley, CA 94720 USA.
EM mbsalmeron@lbl.gov
RI Carenco, Sophie/D-6512-2011; Borondics, Ferenc/A-7616-2008; Foundry,
   Molecular/G-9968-2014; Escudero, Carlos/F-8044-2011
OI Carenco, Sophie/0000-0002-6164-2053; Escudero,
   Carlos/0000-0001-8716-9391
FU Office of Energy Research, Division of Materials Sciences and
   Engineering of the US Department of Energy [DE-AC02-05CH11231];
   MEC/Fulbright program [2008-0253]; Danish Research Council for
   Independent Research Natural Sciences (Det Frie Forskningsraad Natur og
   Univers)
FX This work was supported by the Director, Office of Energy Research,
   Division of Materials Sciences and Engineering of the US Department of
   Energy under Contract No. DE-AC02-05CH11231. CE acknowledges financial
   support from the MEC/Fulbright program (reference No. 2008-0253). AT
   acknowledges the support from the Danish Research Council for
   Independent Research Natural Sciences (Det Frie Forskningsraad Natur og
   Univers).
NR 19
TC 7
Z9 7
U1 0
U2 37
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 0909-0495
J9 J SYNCHROTRON RADIAT
JI J. Synchrot. Radiat.
PD MAY
PY 2013
VL 20
BP 504
EP 508
DI 10.1107/S0909049513002434
PN 3
PG 5
WC Instruments & Instrumentation; Optics; Physics, Applied
SC Instruments & Instrumentation; Optics; Physics
GA 126HP
UT WOS:000317604800015
PM 23592631
ER

PT J
AU Cheng, KE
   Crary, DJ
   Ray, J
   Safta, C
AF Cheng, Karen Elizabeth
   Crary, David J.
   Ray, Jaideep
   Safta, Cosmin
TI Structural models used in real-time biosurveillance outbreak detection
   and outbreak curve isolation from noisy background morbidity levels
SO JOURNAL OF THE AMERICAN MEDICAL INFORMATICS ASSOCIATION
LA English
DT Article
ID SYNDROMIC SURVEILLANCE; INFECTIOUS-DISEASES; ANTHRAX
AB Objective We discuss the use of structural models for the analysis of biosurveillance related data.
   Methods and results Using a combination of real and simulated data, we have constructed a data set that represents a plausible time series resulting from surveillance of a large scale bioterrorist anthrax attack in Miami. We discuss the performance of anomaly detection with structural models for these data using receiver operating characteristic (ROC) and activity monitoring operating characteristic (AMOC) analysis. In addition, we show that these techniques provide a method for predicting the level of the outbreak valid for approximately 2 weeks, post-alarm.
   Conclusions Structural models provide an effective tool for the analysis of biosurveillance data, in particular for time series with noisy, non-stationary background and missing data.
C1 [Cheng, Karen Elizabeth; Crary, David J.] Appl Res Associates Inc, Hlth Effects & Med Response Grp, Arlington, VA 22203 USA.
   [Ray, Jaideep; Safta, Cosmin] Sandia Natl Labs, Quantitat Modeling & Anal Dept, Livermore, CA USA.
RP Cheng, KE (reprint author), Appl Res Associates Inc, Hlth Effects & Med Response Grp, 801 N Quincy St,Suite 700, Arlington, VA 22203 USA.
EM kcheng@ara.com
FU US Department of Energy's National Nuclear Security Administration
   [DE-AC04-94AL85000]; Defense Threat Reduction Agency (DTRA)
   [HDTRA1-09-C-0034]
FX The authors would like to thank the DTRA Program Manager, Ms. Nancy
   Nurthen, for her support. Sandia National Laboratories is a
   multi-programme laboratory managed and operated by Sandia Corporation, a
   wholly owned subsidiary of Lockheed Martin Corporation, for the US
   Department of Energy's National Nuclear Security Administration under
   contract DE-AC04-94AL85000. The authors also thank anonymous reviewers
   for comments that significantly improved the quality of this article.;
   This work is supported by the Defense Threat Reduction Agency (DTRA)
   under contract HDTRA1-09-C-0034.
NR 18
TC 1
Z9 1
U1 1
U2 14
PU BMJ PUBLISHING GROUP
PI LONDON
PA BRITISH MED ASSOC HOUSE, TAVISTOCK SQUARE, LONDON WC1H 9JR, ENGLAND
SN 1067-5027
J9 J AM MED INFORM ASSN
JI J. Am. Med. Inf. Assoc.
PD MAY
PY 2013
VL 20
IS 3
BP 435
EP 440
DI 10.1136/amiajnl-2012-000945
PG 6
WC Computer Science, Information Systems; Computer Science,
   Interdisciplinary Applications; Health Care Sciences & Services;
   Information Science & Library Science; Medical Informatics
SC Computer Science; Health Care Sciences & Services; Information Science &
   Library Science; Medical Informatics
GA 124PP
UT WOS:000317477500006
PM 23037798
ER

PT J
AU Fan, SF
   Macken, CA
   Li, CJ
   Ozawa, M
   Goto, H
   Iswahyudi, NFN
   Nidom, CA
   Chen, HL
   Neumann, G
   Kawaoka, Y
AF Fan, Shufang
   Macken, Catherine A.
   Li, Chengjun
   Ozawa, Makoto
   Goto, Hideo
   Iswahyudi, N. F. N.
   Nidom, Chairul A.
   Chen, Hualan
   Neumann, Gabriele
   Kawaoka, Yoshihiro
TI Synergistic Effect of the PDZ and p85 beta-Binding Domains of the NS1
   Protein on Virulence of an Avian H5N1 Influenza A Virus
SO JOURNAL OF VIROLOGY
LA English
DT Article
ID PI3K/AKT SIGNALING PATHWAY; BINDING MOTIF; PHOSPHATIDYLINOSITOL-3-KINASE
   PI3K; RIG-I; MIGRATORY WATERFOWL; GENE CONTRIBUTES; INTERFERON; CHINA;
   PATHOGENICITY; ACTIVATION
AB The influenza A virus NS1 protein affects virulence through several mechanisms, including the host's innate immune response and various signaling pathways. Highly pathogenic avian influenza (HPAI) viruses of the H5N1 subtype continue to evolve through reassortment and mutations. Our recent phylogenetic analysis identified a group of HPAI H5N1 viruses with two characteristic mutations in NS1: the avian virus-type PDZ domain-binding motif ESEV (which affects virulence) was replaced with ESKV, and NS1-138F (which is highly conserved among all influenza A viruses and may affect the activation of the phosphatidylinositol 3-kinase [PI3K]/Akt signaling pathway) was replaced with NS1-138Y. Here, we show that an HPAI H5N1 virus (A/duck/Hunan/69/2004) encoding NS1-ESKV and NS1-138Y was confined to the respiratory tract of infected mice, whereas a mutant encoding NS1-ESEV and NS1-138F caused systemic infection and killed mice more efficiently. Mutation of either one of these sites had small effects on virulence. In addition, we found that the amino acid at NS1-138 affected not only the induction of the PI3K/Akt pathway but also the interaction of NS1 with cellular PDZ domain proteins. Similarly, the mutation in the PDZ domain-binding motif of NS1 altered its binding to cellular PDZ domain proteins and affected Akt phosphorylation. These findings suggest a functional interplay between the mutations at NS1-138 and NS1-229 that results in a synergistic effect on influenza virulence.
C1 [Fan, Shufang; Li, Chengjun; Ozawa, Makoto; Neumann, Gabriele; Kawaoka, Yoshihiro] Univ Wisconsin Madison, Sch Vet Med, Dept Pathobiol Sci, Influenza Res Inst, Madison, WI 53715 USA.
   [Macken, Catherine A.] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM USA.
   [Goto, Hideo; Kawaoka, Yoshihiro] Univ Tokyo, Inst Med Sci, Dept Microbiol & Immunol, Div Virol, Tokyo, Japan.
   [Iswahyudi, N. F. N.; Nidom, Chairul A.] Airlangga Univ, Avian Influenza Zoonosis Res Ctr, Surabaya, Indonesia.
   [Chen, Hualan] Chinese Acad Agr Sci, Harbin Vet Res Inst, Minist Agr, Anim Influenza Lab, Harbin, Peoples R China.
   [Chen, Hualan] Chinese Acad Agr Sci, Harbin Vet Res Inst, State Key Lab Vet Biotechnol, Harbin, Peoples R China.
   [Kawaoka, Yoshihiro] ERATO Infect Induced Host Responses Project, Saitama, Japan.
   [Kawaoka, Yoshihiro] Univ Tokyo, Inst Med Sci, Int Res Ctr Infect Dis, Dept Special Pathogens, Tokyo, Japan.
   [Kawaoka, Yoshihiro] Kobe Univ, Dept Microbiol & Infect Dis, Kobe, Hyogo, Japan.
RP Kawaoka, Y (reprint author), Univ Wisconsin Madison, Sch Vet Med, Dept Pathobiol Sci, Influenza Res Inst, Madison, WI 53715 USA.
EM neumanng@svm.vetmed.wisc.edu; kawaokay@svm.vetmed.wisc.edu
FU National Institute of Allergy and Infectious Diseases Public Health
   Service [AI069274]; Japan Initiative for Global Research Network on
   Infectious Diseases through the Ministry of Education, Culture, Sports,
   Science, and Technology; ERATO (Japan Science and Technology Agency);
   National Natural Science Foundation of China [30825032]
FX This work was supported by a National Institute of Allergy and
   Infectious Diseases Public Health Service research grant (AI069274), by
   a Grant-in-Aid for Specially Promoted Research, by the Japan Initiative
   for Global Research Network on Infectious Diseases through the Ministry
   of Education, Culture, Sports, Science, and Technology, by ERATO (Japan
   Science and Technology Agency), and by the National Natural Science
   Foundation of China (30825032).
NR 71
TC 20
Z9 20
U1 3
U2 11
PU AMER SOC MICROBIOLOGY
PI WASHINGTON
PA 1752 N ST NW, WASHINGTON, DC 20036-2904 USA
SN 0022-538X
J9 J VIROL
JI J. Virol.
PD MAY
PY 2013
VL 87
IS 9
BP 4861
EP 4871
DI 10.1128/JVI.02608-12
PG 11
WC Virology
SC Virology
GA 123UK
UT WOS:000317416400008
PM 23408626
ER

PT J
AU De Cecchis, D
   Drummond, LA
   Castillo, JE
AF De Cecchis, D.
   Drummond, L. A.
   Castillo, J. E.
TI Design of a Distributed Coupling Toolkit for High Performance Computing
   environment
SO MATHEMATICAL AND COMPUTER MODELLING
LA English
DT Article
DE Computational sciences; Multiphysics modeling; High Performance
   Computing; Model coupling
ID SYSTEM
AB Computer simulations become more realistic as they include interactions between different physical phenomena. Here, we focus on the design of a flexible, scalable and distributed coupling library for High Performance Computing applications, the Distributed Coupling Toolkit (DCT), compare it with other coupling approaches and report some preliminary results. The work presented here is part of a larger effort to couple models, like the General Curvilinear Coastal Ocean Model, inside the General Curvilinear Environmental Model. (C) 2011 Elsevier Ltd. All rights reserved.
C1 [De Cecchis, D.; Castillo, J. E.] San Diego State Univ, Computat Sci Res Ctr, San Diego, CA 92182 USA.
   [Drummond, L. A.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Computat Res Div, Berkeley, CA 94720 USA.
   [De Cecchis, D.] Univ Carabobo, Fac Ciencias & Tecnol, Ctr Multidisciplinario Visualizac & Comp Cient, Valencia, Venezuela.
RP De Cecchis, D (reprint author), San Diego State Univ, Computat Sci Res Ctr, 5500 Campanile Dr, San Diego, CA 92182 USA.
EM dececchi@sciences.sdsu.edu; LADrummond@lbl.gov; castillo@myth.sdsu.edu
FU Computational Research Division, at the Lawrence Berkeley National
   Laboratory; Computational Science Research Center, at San Diego State
   University
FX The authors wish to thank Severino Reyes Profeta for his valuable help.
   The authors gratefully acknowledge the helpful comments and suggestions
   from the reviewers. This work is possible with the support of the
   Computational Research Division, at the Lawrence Berkeley National
   Laboratory and the Computational Science Research Center, at San Diego
   State University.
NR 9
TC 1
Z9 1
U1 0
U2 2
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0895-7177
J9 MATH COMPUT MODEL
JI Math. Comput. Model.
PD MAY
PY 2013
VL 57
IS 9-10
BP 2267
EP 2278
DI 10.1016/j.mcm.2011.07.002
PG 12
WC Computer Science, Interdisciplinary Applications; Computer Science,
   Software Engineering; Mathematics, Applied
SC Computer Science; Mathematics
GA 121RO
UT WOS:000317262100024
ER

PT J
AU Townsend, JP
   Chang, YY
   Lou, XT
   Merino, M
   Kirklin, SJ
   Doak, JW
   Issa, A
   Wolverton, C
   Tkachev, SN
   Dera, P
   Jacobsen, SD
AF Townsend, Joshua P.
   Chang, Yun-Yuan
   Lou, Xiaoting
   Merino, Miguel
   Kirklin, Scott J.
   Doak, Jeff W.
   Issa, Ahmed
   Wolverton, Chris
   Tkachev, Sergey N.
   Dera, Przemyslaw
   Jacobsen, Steven D.
TI Stability and equation of state of post-aragonite BaCO3
SO PHYSICS AND CHEMISTRY OF MINERALS
LA English
DT Article
DE BaCO3; Carbonates; High pressure; Equation of state
ID HIGH-PRESSURE POLYMORPHS; CRYSTAL-STRUCTURE; CARBON-DIOXIDE; PHASE;
   CACO3; MANTLE; CO2; SEQUESTRATION; DIFFRACTION; TRANSITION
AB At ambient conditions, witherite is the stable form of BaCO3 and has the aragonite structure with space group Pmcn. Above similar to 10 GPa, BaCO3 adopts a post-aragonite structure with space group Pmmn. High-pressure and high-temperature synchrotron X-ray diffraction experiments were used to study the stability and equation of state of post-aragonite BaCO3, which remained stable to the highest experimental P-T conditions of 150 GPa and 2,000 K. We obtained a bulk modulus K (0) = 88(2) GPa with = 4.8(3) and V (0) = 128.1(5) (3) using a third-order Birch-Murnaghan fit to the 300 K experimental data. We also carried out density functional theory (DFT) calculations of enthalpy (H) of two structures of BaCO3 relative to the enthalpy of the post-aragonite phase. In agreement with previous studies and the current experiments, the calculations show aragonite to post-aragonite phase transitions at similar to 8 GPa. We also tested a potential high-pressure post-post-aragonite structure (space group C222 (1) ) featuring four-fold coordination of oxygen around carbon. In agreement with previous DFT studies, Delta H between the C222 (1) structure and post-aragonite (Pmmn) decreases with pressure, but the Pmmn structure remains energetically favorable to pressures greater than 200 GPa. We conclude that post-post-aragonite phase transformations of carbonates do not follow systematic trends observed for post-aragonite transitions governed solely by the ionic radii of their metal cations.
C1 [Townsend, Joshua P.; Chang, Yun-Yuan; Lou, Xiaoting; Merino, Miguel; Jacobsen, Steven D.] Northwestern Univ, Dept Earth & Planetary Sci, Evanston, IL 60208 USA.
   [Kirklin, Scott J.; Doak, Jeff W.; Issa, Ahmed; Wolverton, Chris] Northwestern Univ, Dept Mat Sci & Engn, Evanston, IL 60208 USA.
   [Tkachev, Sergey N.; Dera, Przemyslaw] Univ Chicago, Argonne Natl Lab, Ctr Adv Radiat Sources, Argonne, IL 60439 USA.
RP Townsend, JP (reprint author), Northwestern Univ, Dept Earth & Planetary Sci, 2145 Sheridan Rd, Evanston, IL 60208 USA.
EM joshua@earth.northwestern.edu
RI Jacobsen, Steven/F-3443-2013; Dera, Przemyslaw/F-6483-2013; Wolverton,
   Christopher/B-7542-2009; Doak, Jeff/P-1366-2014; 
OI Jacobsen, Steven/0000-0002-9746-958X; Doak, Jeff/0000-0001-8576-7304;
   Townsend, Joshua/0000-0002-1137-3924
FU NSF [EAR-074787, EAR-0622171]; Carnegie/DOE Alliance Center (CDAC);
   David and Lucile Packard Foundation; Department of Energy
   [DE-FG02-94ER14466]; DOE Office of Science, Office of Basic Energy
   Sciences [DE-AC02-06CH11357]; COMPRES, the Consortium for Materials
   Properties Research in Earth Sciences under NSF [EAR 11-57758]; Center
   for Electrical Energy Storage: Tailored Interfaces, an Energy Frontier
   Research Center; U.S. Department of Energy, Office of Science and Office
   of Basic Sciences; Ford-Boeing-Northwestern (FBN) alliance [81132882];
   Revolutionary Materials for Solid State EnergyConversion, an Energy
   Frontier Research Center; U.S. Department of Energy, Office of Science,
   Office of Basic Energy Sciences [DE-SC00010543]
FX This research was supported by the NSF EAR-074787 (CAREER), the
   Carnegie/DOE Alliance Center (CDAC), and by the David and Lucile Packard
   Foundation to SDJ. Portions of this work were performed at
   GeoSoilEnviroCARS (GSECARS), Sector 13, Advanced Photon Source (APS),
   Argonne National Laboratory. GSE-CARS is supported by the NSF
   EAR-0622171 and Department of Energy DE-FG02-94ER14466. Use of the APS
   was supported by the DOE Office of Science, Office of Basic Energy
   Sciences, under Contract No. DE-AC02-06CH11357. This research was
   partially supported by COMPRES, the Consortium for Materials Properties
   Research in Earth Sciences under NSF Cooperative Agreement EAR 11-57758.
   SK was supported by the Center for Electrical Energy Storage: Tailored
   Interfaces, an Energy Frontier Research Center funded by the U.S.
   Department of Energy, Office of Science and Office of Basic Sciences. AI
   was supported by the Ford-Boeing-Northwestern (FBN) alliance, award no.
   81132882. JWD was supported by the Revolutionary Materials for Solid
   State EnergyConversion, an Energy Frontier Research Center funded by the
   U.S. Department of Energy, Office of Science, Office of Basic Energy
   Sciences under Award Number DE-SC00010543.
NR 34
TC 6
Z9 7
U1 3
U2 46
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 0342-1791
J9 PHYS CHEM MINER
JI Phys. Chem. Miner.
PD MAY
PY 2013
VL 40
IS 5
BP 447
EP 453
DI 10.1007/s00269-013-0582-8
PG 7
WC Materials Science, Multidisciplinary; Mineralogy
SC Materials Science; Mineralogy
GA 127GP
UT WOS:000317686100007
ER

PT J
AU Walsh, SDC
   Du Frane, WL
   Mason, HE
   Carroll, SA
AF Walsh, Stuart D. C.
   Du Frane, Wyatt L.
   Mason, Harris E.
   Carroll, Susan A.
TI Permeability of Wellbore-Cement Fractures Following Degradation by
   Carbonated Brine
SO ROCK MECHANICS AND ROCK ENGINEERING
LA English
DT Article
DE Carbon sequestration; Wellbore integrity; Fracture flow and transport;
   Chemo-mechanical coupling
ID GEOLOGIC SEQUESTRATION CONDITIONS; CALCITE DISSOLUTION; RELEVANT
   SITUATIONS; KARST AREAS; CO2; PRECIPITATION; KINETICS; SYSTEM
AB Fractures in wellbore cement and along wellbore-cement/host-rock interfaces have been identified as potential leakage pathways from long-term carbon sequestration sites. When exposed to carbon-dioxide-rich brines, the alkaline cement undergoes a series of reactions that form distinctive fronts adjacent to the cement surface. However, quantifying the effect of these reactions on fracture permeability is not solely a question of geochemistry, as the reaction zones also change the cement's mechanical properties, modifying the fracture geometry as a result.This paper describes how these geochemical and geomechanical processes affect fracture permeability in wellbore cement. These competing influences are discussed in light of data from a core-flood experiment conducted under carbon sequestration conditions: reaction chemistry, fracture permeability evolution over time, and comparative analysis of X-ray tomography of unreacted and reacted cement samples. These results are also compared to predictions by a complementary numerical study that couples geochemical, geomechanical and hydrodynamic simulations to model the formation of reaction fronts within the cement and their effect on fracture permeability.
C1 [Walsh, Stuart D. C.; Du Frane, Wyatt L.; Mason, Harris E.; Carroll, Susan A.] Lawrence Livermore Natl Lab, Livermore, CA USA.
RP Walsh, SDC (reprint author), Lawrence Livermore Natl Lab, 7000 East Av, Livermore, CA USA.
EM walsh24@llnl.gov
RI Mason, Harris/F-7194-2011; 
OI Mason, Harris/0000-0002-1840-0550; Walsh, Stuart/0000-0001-8155-4870
FU DOE National Energy Technology Laboratory [AA3030100]; Office of Basic
   Energy Sciences of the US Department of Energy [N. DE-AC0-2-05CH11231];
   agency of the United States government; LLNL [DE-AC52-07NA27344]
FX We gratefully support for this work under the DOE National Energy
   Technology Laboratory, Project AA3030100. We would like to thank Larry
   Knauer and the California Well Sample Repository for the caprock samples
   used in our experiments. The Advanced Light Source is supported by the
   Director, Office of Basic Energy Sciences of the US Department of Energy
   under Contract N. DE-AC0-2-05CH11231. We thank Yelena Scholokhova for
   collecting and processing the tomography data and Alastair MacDowell and
   Dula Parkinson for their assistance at the beamline. We are also
   grateful to M. Smith for her assistance with the experiments, as well as
   D. Ruddle and S. Torres for their assistance in the preparation of
   sample cores. This manuscript was approved for release by LLNL with
   release number LLNL-JRNL-598999. This document was prepared as an
   account of work sponsored by an agency of the United States government.
   Neither the United States government nor Lawrence Livermore National
   Security, LLC, nor any of their employees make any warranty, expressed
   or implied, or assumes any legal liability or responsibility for the
   accuracy, completeness, or usefulness of any information, apparatus,
   product, or process disclosed, or represents that its use would not
   infringe privately owned rights. Reference herein to any specific
   commercial product, process, or service by trade name, trademark,
   manufacturer, or otherwise does not necessarily constitute or imply its
   endorsement, recommendation, or favoring by the United States government
   or Lawrence Livermore National Security, LLC. The views and opinions of
   authors expressed herein do not necessarily state or reflect those of
   the United States government or Lawrence Livermore National Security,
   LLC, and shall not be used for advertising or product endorsement
   purposes.; Prepared by LLNL under Contract DE-AC52-07NA27344.
NR 24
TC 21
Z9 21
U1 0
U2 19
PU SPRINGER WIEN
PI WIEN
PA SACHSENPLATZ 4-6, PO BOX 89, A-1201 WIEN, AUSTRIA
SN 0723-2632
J9 ROCK MECH ROCK ENG
JI Rock Mech. Rock Eng.
PD MAY
PY 2013
VL 46
IS 3
SI SI
BP 455
EP 464
DI 10.1007/s00603-012-0336-9
PG 10
WC Engineering, Geological; Geosciences, Multidisciplinary
SC Engineering; Geology
GA 127GF
UT WOS:000317685000004
ER

PT J
AU Lumetta, GJ
   Gelis, AV
   Braley, JC
   Carter, JC
   Pittman, JW
   Warner, MG
   Vandegrift, GF
AF Lumetta, Gregg J.
   Gelis, Artem V.
   Braley, Jenifer C.
   Carter, Jennifer C.
   Pittman, Jonathan W.
   Warner, Marvin G.
   Vandegrift, George F.
TI The TRUSPEAK Concept: Combining CMPO and HDEHP for Separating Trivalent
   Lanthanides from the Transuranic Elements
SO SOLVENT EXTRACTION AND ION EXCHANGE
LA English
DT Article
DE Lanthanide separation; actinide separation; lanthanide; actinide
   separation; CMPO; HDEHP
ID NUCLEAR-FUEL; EXTRACTION; BACK; AM
AB Combining octyl(phenyl)-N,N-diisobutyl-carbamoylmethyl-phosphine oxide (CMPO) and bis-(2-ethylhexyl) phosphoric acid (HDEHP) into a single process solvent for separating transuranic elements from liquid high-level waste is explored. Co-extraction of americium and the lanthanide elements from nitric acid solution is possible with a solvent mixture consisting of 0.1 M CMPO plus 1 M HDEHP in n-dodecane. Switching the aqueous-phase chemistry to a citrate-buffered solution of diethylene triamine pentaacetic acid (DTPA) allows for selective stripping of americium, separating it from the lanthanide elements. Potential strategies have been developed for managing molybdenum and zirconium (both of which co-extract with americium and the lanthanides). The work presented here demonstrates the feasibility of combining CMPO and HDEHP into a single extraction solvent for recovering americium from high-level waste and its separation from the lanthanides.
C1 [Lumetta, Gregg J.; Braley, Jenifer C.; Carter, Jennifer C.; Pittman, Jonathan W.; Warner, Marvin G.] Pacific NW Natl Lab, Richland, WA 99352 USA.
   [Gelis, Artem V.; Vandegrift, George F.] Argonne Natl Lab, Argonne, IL 60439 USA.
RP Lumetta, GJ (reprint author), Pacific NW Natl Lab, POB 999,MSIN P7-25, Richland, WA 99352 USA.
EM gregg.lumetta@pnnl.gov
FU U.S. Department of Energy, Office of Nuclear Energy, through the Fuel
   Cycle Research and Development Program; U.S. Department of Energy
   [DE-AC05-76RL01830]
FX This work was funded by the U.S. Department of Energy, Office of Nuclear
   Energy, through the Fuel Cycle Research and Development Program. Pacific
   Northwest National Laboratory is operated by Battelle Memorial Institute
   for the U.S. Department of Energy under contract DE-AC05-76RL01830.
NR 18
TC 14
Z9 14
U1 1
U2 28
PU TAYLOR & FRANCIS INC
PI PHILADELPHIA
PA 530 WALNUT STREET, STE 850, PHILADELPHIA, PA 19106 USA
SN 0736-6299
EI 1532-2262
J9 SOLVENT EXTR ION EXC
JI Solvent Extr. Ion Exch.
PD MAY 1
PY 2013
VL 31
IS 3
BP 223
EP 236
DI 10.1080/07366299.2012.670595
PG 14
WC Chemistry, Multidisciplinary
SC Chemistry
GA 122CZ
UT WOS:000317295100001
ER

PT J
AU Huang, HH
   Puente, CE
   Cortis, A
AF Huang, Huai-Hsien
   Puente, Carlos E.
   Cortis, Andrea
TI Geometric harnessing of precipitation records: reexamining four storms
   from Iowa City
SO STOCHASTIC ENVIRONMENTAL RESEARCH AND RISK ASSESSMENT
LA English
DT Article
DE Rainfall in time; Fractals; Multifractals; Inverse problem; Particle
   swarm optimization; Fractal-multifractal approach
ID BOUNDED RANDOM CASCADES; MULTIFRACTAL ANALYSIS; TEMPORAL RAINFALL;
   EXTREMES; FIELDS; REPRESENTATION; DISTRIBUTIONS; CLOUDS; BOSTON; RATES
AB Complex geometries often present in hydrologic data sets such as precipitation records have been difficult to model in their totality using classical stochastic methods. In recent years, we have developed extensions of a deterministic procedure, the fractal-multifractal (FM) method, whose patterns share fine details and textures of individual data sets in addition to the usual key statistical properties. This work discusses our latest efforts at encoding four geometrically distinct storms gathered in Iowa City with parameters found running a modified particle swarm optimization procedure. The results reaffirm the capabilities of the FM method as all storms are closely fitted within measurement errors. All sets may be encoded with a compression ratio exceeding 350:1, have a maximum error in cumulative distribution less than 2.5 %, and closely preserve the autocorrelation, power spectrum, and multifractal spectrum of the records.
C1 [Huang, Huai-Hsien; Puente, Carlos E.] Univ Calif Davis, Davis, CA 95616 USA.
   [Cortis, Andrea] Lawrence Berkeley Natl Lab, Albany, CA 94710 USA.
RP Puente, CE (reprint author), Univ Calif Davis, 127 Veihmeyer Hall,1 Shields Ave, Davis, CA 95616 USA.
EM cepuente@ucdavis.edu
FU U.S. Department of Energy [DE-AC02-05CH11231]
FX A. Cortis' work was supported in part by the U.S. Department of Energy
   under Contract No. DE-AC02-05CH11231. The reviews we received led to
   relevant improvements to the manuscript and they are rightly
   acknowledged.
NR 34
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U2 4
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 1436-3240
J9 STOCH ENV RES RISK A
JI Stoch. Environ. Res. Risk Assess.
PD MAY
PY 2013
VL 27
IS 4
BP 955
EP 968
DI 10.1007/s00477-012-0617-6
PG 14
WC Engineering, Environmental; Engineering, Civil; Environmental Sciences;
   Statistics & Probability; Water Resources
SC Engineering; Environmental Sciences & Ecology; Mathematics; Water
   Resources
GA 128DN
UT WOS:000317749400014
ER

PT J
AU Trainor-Guitton, WJ
   Mukerji, T
   Knight, R
AF Trainor-Guitton, Whitney J.
   Mukerji, Tapan
   Knight, Rosemary
TI A methodology for quantifying the value of spatial information for
   dynamic Earth problems
SO STOCHASTIC ENVIRONMENTAL RESEARCH AND RISK ASSESSMENT
LA English
DT Article
ID BURIED QUATERNARY VALLEYS; GROUNDWATER; DENMARK; RESISTIVITY
AB We develop a methodology for assessing the value of information (VOI) from spatial data for groundwater decisions. Two sources of uncertainty are the focus of this VOI methodology: the spatial heterogeneity (how it influences the hydrogeologic response of interest) and the reliability of geophysical data (how they provide information about the spatial heterogeneity). An existing groundwater situation motivates and in turn determines the scope of this research. The objectives of this work are to (1) represent the uncertainty of the dynamic hydrogeologic response due to spatial heterogeneity, (2) provide a quantitative measure for how well a particular information reveals this heterogeneity (the uncertainty of the information) and (3) use both of these to propose a VOI workflow for spatial decisions and spatial data. The uncertainty of the hydraulic response is calculated using many Earth models that are consistent with the a priori geologic information. The information uncertainty is achieved quantitatively through Monte Carlo integration and geostatistical simulation. Two VOI results are calculated which demonstrate that a higher VOI occurs when the geophysical attribute (the data) better discriminates between geological indicators. Although geophysical data can only indirectly measure static properties that may influence the dynamic response, this transferable methodology provides a framework to estimate the value of spatial data given a particular decision scenario.
C1 [Trainor-Guitton, Whitney J.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
   [Mukerji, Tapan] Stanford Univ, Stanford, CA 94305 USA.
   [Knight, Rosemary] Stanford Univ, Dept Geophys, Stanford, CA 94305 USA.
RP Trainor-Guitton, WJ (reprint author), Lawrence Livermore Natl Lab, 7000 East Ave,L-231, Livermore, CA 94550 USA.
EM trainorguitton@llnl.gov; mukerji@stanford.edu; rknight@stanford.edu
FU Affiliates of Stanford Center for Reservoir Forecasting; Schlumberger
   Water Services; LLNL [DE-AC52-158 07NA27344]
FX This work was possible because of the support from the Affiliates of
   Stanford Center for Reservoir Forecasting and Schlumberger Water
   Services. We thank professor Jef Caers for his early participation in
   this work. Esben Auken and Nikolaj Foged of the University of Arhus,
   Denmark provided helpful insights about the TEM measurement. Thomas
   Nyholm and Stine Rasmussen of the Danish Ministry of the Environment
   provided useful information about aquifer vulnerability issues. Prepared
   by LLNL under Contract DE-AC52-158 07NA27344
NR 39
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U1 2
U2 11
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 1436-3240
J9 STOCH ENV RES RISK A
JI Stoch. Environ. Res. Risk Assess.
PD MAY
PY 2013
VL 27
IS 4
BP 969
EP 983
DI 10.1007/s00477-012-0619-4
PG 15
WC Engineering, Environmental; Engineering, Civil; Environmental Sciences;
   Statistics & Probability; Water Resources
SC Engineering; Environmental Sciences & Ecology; Mathematics; Water
   Resources
GA 128DN
UT WOS:000317749400015
ER

PT J
AU Malagoli, A
   Lee, PJ
   Ghosh, AK
   Scheuerlein, C
   Di Michiel, M
   Jiang, J
   Trociewitz, UP
   Hellstrom, EE
   Larbalestier, DC
AF Malagoli, A.
   Lee, P. J.
   Ghosh, A. K.
   Scheuerlein, C.
   Di Michiel, M.
   Jiang, J.
   Trociewitz, U. P.
   Hellstrom, E. E.
   Larbalestier, D. C.
TI Evidence for length-dependent wire expansion, filament dedensification
   and consequent degradation of critical current density in Ag-alloy
   sheathed Bi-2212 wires
SO SUPERCONDUCTOR SCIENCE & TECHNOLOGY
LA English
DT Article
ID CONDUCTOR DEVELOPMENT; ROUND WIRES; MAGNET; NB3SN
AB It is well known that longer Bi-2212 conductors have significantly lower critical current density (J(c)) than shorter ones, and recently it has become clear that a major cause of this reduction is internal gas pressure generated during heat treatment, which expands the wire diameter and dedensifies the Bi-2212 filaments. Here we report on the length-dependent expansion of 5-240 cm lengths of state-of-the-art, commercial Ag alloy sheathed Bi-2212 wire after full and some partial heat treatments. Detailed image analysis along the wire length shows that the wire diameter increases with distance from the ends, longer samples often showing evident damage and leaks provoked by the internal gas pressure. Comparison of heat treatments carried out just below the melting point and with the usual melt process makes it clear that melting is crucial to developing high internal pressure. The decay of J(c) away from the ends is directly correlated to the local wire diameter increase, which decreases the local Bi-2212 filament mass density and lowers J(c), often by well over 50%. It is clear that control of the internal gas pressure is crucial to attaining the full J(c) of these very promising round wires and that the very variable properties of Bi-2212 wires are due to the fact that this internal gas pressure has so far not been well controlled.
C1 [Malagoli, A.; Lee, P. J.; Jiang, J.; Trociewitz, U. P.; Hellstrom, E. E.; Larbalestier, D. C.] Natl High Magnet Field Lab, Ctr Appl Superconduct, Tallahassee, FL 32310 USA.
   [Malagoli, A.] CNR SPIN, I-16152 Genoa, Italy.
   [Ghosh, A. K.] Brookhaven Natl Lab, Upton, NY 11973 USA.
   [Scheuerlein, C.] European Org Nucl Res CERN, CH-1211 Geneva, Switzerland.
   [Di Michiel, M.] ESRF, F-38043 Grenoble, France.
RP Malagoli, A (reprint author), Natl High Magnet Field Lab, Ctr Appl Superconduct, 2031 E Paul Dirac Dr, Tallahassee, FL 32310 USA.
EM andrea.malagoli@spin.cnr.it
RI Larbalestier, David/B-2277-2008; 
OI Larbalestier, David/0000-0001-7098-7208; Lee, Peter/0000-0002-8849-8995
FU ARRA grant of the US Department of Energy Office of High Energy Physics
   by the National High Magnetic Field Laboratory; National Science
   Foundation [NSF/DMR-1157490]; State of Florida
FX This work was carried out within the Very High Field Superconducting
   Magnet Collaboration (VHFSMC) which was supported by an ARRA grant of
   the US Department of Energy Office of High Energy Physics by the
   National High Magnetic Field Laboratory, which is supported by the
   National Science Foundation under NSF/DMR-1157490 and by the State of
   Florida. We are grateful for many discussions with partners within the
   VHFSMC collaboration, especially with Tengming Shen, who explored the Ag
   creep aspects of the problem, and with Emanuela Barzi, who first drew
   attention to the expansion of long wires in Rutherford cables, that also
   manifests itself here in short samples. We acknowledge the ESRF for
   beamtime at ID15.
NR 37
TC 17
Z9 17
U1 3
U2 19
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0953-2048
EI 1361-6668
J9 SUPERCOND SCI TECH
JI Supercond. Sci. Technol.
PD MAY
PY 2013
VL 26
IS 5
AR 055018
DI 10.1088/0953-2048/26/5/055018
PG 10
WC Physics, Applied; Physics, Condensed Matter
SC Physics
GA 125VP
UT WOS:000317570000019
ER

PT J
AU Schempp, P
   Cross, CE
   Hacker, R
   Pittner, A
   Rethmeier, M
AF Schempp, P.
   Cross, C. E.
   Haecker, R.
   Pittner, A.
   Rethmeier, M.
TI Influence of grain size on mechanical properties of aluminium GTA weld
   metal
SO WELDING IN THE WORLD
LA English
DT Article
DE GTA welding; Aluminium; Grain size; Tensile tests; Dynamic fracture
   tests
ID MG ALLOY WELDS; CU ALLOY; NUCLEANT PARTICLES; CRACK-GROWTH; HOT
   CRACKING; REFINEMENT; SOLIDIFICATION; DEFORMATION; TEMPERATURE;
   TOUGHNESS
AB Grain refinement is an important possibility to enhance the mechanical properties such as strength, ductility and toughness of aluminium weld metal. In this study, grain refinement was achieved through the addition of commercial grain refiner Al Ti5B1 to gas tungsten arc weld metal of the aluminium alloys 1050A (Al 99.5) and 5083 (Al Mg4.5Mn0.7). The grain refiner additions led to a significant reduction of the weld metal mean grain size (Alloy 1050A, 86 %; Alloy 5083, 44 %) with a change in grain shape from columnar to equiaxed. Tensile tests showed for Alloy 5083 that the weld metal's ductility can be increased through grain refinement. No improvement in weld metal strength (i.e. yield strength and ultimate tensile strength) was observed. Furthermore, tear tests with notched specimens revealed that the resistance against initiation and propagation of cracks in the weld metal can be enhanced through grain refinement. The toughness was observed to increase clearly by grain refinement in weld metal of commercial pure Al (Alloy 1050A). In Alloy 5083 weld metal, the toughness was not improved through grain refinement, likely because of a semi-continuous network of brittle intermetallic phases that facilitate crack propagation.
C1 [Schempp, P.; Haecker, R.; Pittner, A.; Rethmeier, M.] BAM Fed Inst Mat Res & Testing, Berlin, Germany.
   [Cross, C. E.] LANL, Los Alamos, NM USA.
   [Rethmeier, M.] IPK Fraunhofer Inst Prod Syst & Design Technol, Berlin, Germany.
RP Schempp, P (reprint author), BAM Fed Inst Mat Res & Testing, Berlin, Germany.
EM P.Schempp@gmx.de; CECross@lanl.gov; Ralf.Haecker@bam.de;
   Andreas.Pittner@bam.de; Michael.Rethmeier@bam.de
RI Rethmeier, Michael/B-9847-2009
OI Rethmeier, Michael/0000-0001-8123-6696
FU Research Association on Welding and Allied Processes of the DVS; Program
   for Funding of Industrial Research and Technology (IGF) of the German
   Federal Ministry of Economics and Technology [16.242N]
FX The authors are grateful to H. Hayen (formerly working for Aluminium-Bau
   Jonuscheit GmbH, Germany) and P. Gudde from KBM Affilips B.V.,
   Netherlands, for the very kind donation of plates of Alloy 5083 (Alijo)
   and grain refiner (KBM Affilips). They also would like to thank M.
   Babiker (tensile and tear testing), M. Cassau (tear testing), D. Bettge
   and S. Bohraus (SEM analysis), G. Oder (WDS analysis), M. Marten and N.
   Stojkic (metallography and hardness testing), H. Strehlau (ICP-OES
   chemical analysis), D. Khler (casting of ingots), W. Grossmann
   (machining of inserts) and S. Brauser (strain measurement) for their
   great support at BAM. The authors are very thankful to the Research
   Association on Welding and Allied Processes of the DVS for their support
   and to the Program for Funding of Industrial Research and Technology
   (IGF) of the German Federal Ministry of Economics and Technology for
   funding the research project 16.242N.
NR 57
TC 5
Z9 6
U1 4
U2 18
PU SPRINGER HEIDELBERG
PI HEIDELBERG
PA TIERGARTENSTRASSE 17, D-69121 HEIDELBERG, GERMANY
SN 0043-2288
EI 1878-6669
J9 WELD WORLD
JI Weld. World
PD MAY
PY 2013
VL 57
IS 3
BP 293
EP 304
DI 10.1007/s40194-013-0026-6
PG 12
WC Metallurgy & Metallurgical Engineering
SC Metallurgy & Metallurgical Engineering
GA 126MQ
UT WOS:000317621800003
ER

PT J
AU Jiang, YQ
   Liu, XH
   Yang, XQ
   Wang, MH
AF Jiang, Yiquan
   Liu, Xiaohong
   Yang, Xiu-Qun
   Wang, Minghuai
TI A numerical study of the effect of different aerosol types on East Asian
   summer clouds and precipitation
SO ATMOSPHERIC ENVIRONMENT
LA English
DT Article
DE Aerosol; Cloud; Precipitation; Climate; Community Atmospheric Model
   version 5
ID COMMUNITY ATMOSPHERE MODEL; BLACK CARBON AEROSOLS; CLIMATE MODELS; PART
   I; MONSOON; CHINA; VARIABILITY; PARAMETERIZATION; MICROPHYSICS;
   POLLUTION
AB In this study, the anthropogenic aerosol impact on the summer monsoon clouds and precipitation in East Asia is investigated using the NCAR Community Atmospheric Model version 5 (CAM5), a state-of-the-art climate model considering aerosol direct, semi-direct and indirect effects. The effects of all anthropogenic aerosols, and anthropogenic black carbon (BC), sulfate, and primary organic matter (POM) are decomposed from different sensitivity simulations. Anthropogenic sulfate and POM reduce the solar flux reaching the surface directly by scattering the solar radiation, and indirectly by increasing the cloud droplet number concentration and cloud liquid water path over East China. The surface air temperature over land is reduced, and the precipitation in North China is suppressed. Unlike anthropogenic sulfate and POM, anthropogenic BC does not have a significant effect on the air temperature at the surface, because of the reduction of the cloud liquid water path and the weakening of shortwave cloud forcing by its semi-direct effect. The anthropogenic BC strengthens the southwesterly wind over South China and leads to stronger deep convection at the 25 degrees N-30 degrees N latitudinal band. The effect of all anthropogenic aerosols on air temperature, clouds, and precipitation is not a linear summation of effects from individual anthropogenic sulfate, BC and POM. Overall all anthropogenic aerosols suppress the precipitation in North China and enhance the precipitation in South China and adjacent ocean regions. (C) 2013 Elsevier Ltd. All rights reserved.
C1 [Jiang, Yiquan; Yang, Xiu-Qun] Nanjing Univ, Sch Atmospher Sci, Inst Climate & Global Change Res, Nanjing 210008, Jiangsu, Peoples R China.
   [Jiang, Yiquan; Liu, Xiaohong; Wang, Minghuai] Pacific NW Natl Lab, Richland, WA 99352 USA.
RP Liu, XH (reprint author), Pacific NW Natl Lab, Atmospher Sci & Global Change Div, 3200 Q Ave,MSIN K9-24, Richland, WA 99352 USA.
EM Xiaohong.Liu@pnnl.gov
RI Wang, Minghuai/E-5390-2011; Yang, Michael/G-9716-2013; Liu,
   Xiaohong/E-9304-2011; jiang, yiquan/L-6888-2016
OI Wang, Minghuai/0000-0002-9179-228X; Liu, Xiaohong/0000-0002-3994-5955; 
FU U.S. Department of Energy (DOE), Office of Science (BER) Scientific
   Discovery through Advanced Computing (SciDAC) Program; National Key
   Basic Research Program (973 Program) of China [2010CB428504]; National
   Natural Science Foundation of China (NSFC) [40730953]; Natural Science
   Foundation of Jiangsu Province [BK2008027]; DOE by Battelle Memorial
   Institute [DE-AC06-76RLO 1830]
FX X. Liu acknowledges the funding support from the U.S. Department of
   Energy (DOE), Office of Science (BER) Scientific Discovery through
   Advanced Computing (SciDAC) Program. X.-Q. Yang is supported by the
   National Key Basic Research Program (973 Program) of China under Grant
   No. 2010CB428504, the National Natural Science Foundation of China
   (NSFC) under Grant No. 40730953, and the Natural Science Foundation of
   Jiangsu Province under Grant No. BK2008027. The Pacific Northwest
   National Laboratory is operated for DOE by Battelle Memorial Institute
   under contract DE-AC06-76RLO 1830.
NR 52
TC 49
Z9 56
U1 2
U2 68
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 1352-2310
J9 ATMOS ENVIRON
JI Atmos. Environ.
PD MAY
PY 2013
VL 70
BP 51
EP 63
DI 10.1016/j.atmosenv.2012.12.039
PG 13
WC Environmental Sciences; Meteorology & Atmospheric Sciences
SC Environmental Sciences & Ecology; Meteorology & Atmospheric Sciences
GA 120GK
UT WOS:000317158600006
ER

PT J
AU Schuh, AE
   Lauvaux, T
   West, TO
   Denning, AS
   Davis, KJ
   Miles, N
   Richardson, S
   Uliasz, M
   Lokupitiya, E
   Cooley, D
   Andrews, A
   Ogle, S
AF Schuh, Andrew E.
   Lauvaux, Thomas
   West, Tristram O.
   Denning, A. Scott
   Davis, Kenneth J.
   Miles, Natasha
   Richardson, Scott
   Uliasz, Marek
   Lokupitiya, Erandathie
   Cooley, Daniel
   Andrews, Arlyn
   Ogle, Stephen
TI Evaluating atmospheric CO2 inversions at multiple scales over a highly
   inventoried agricultural landscape
SO GLOBAL CHANGE BIOLOGY
LA English
DT Article
DE agriculture; atmospheric inversions; carbon cycle; CO2 emissions;
   inventory; Mid-Continent Intensive
ID CARBON-DIOXIDE EXCHANGE; DATA ASSIMILATION; MESOSCALE INVERSIONS;
   THEORETICAL ASPECTS; MODELING SYSTEM; UNITED-STATES; TRANSPORT; SURFACE;
   SINKS; CYCLE
AB An intensive regional research campaign was conducted by the North American Carbon Program (NACP) in 2007 to study the carbon cycle of the highly productive agricultural regions of the Midwestern United States. Forty-five different associated projects were conducted across five US agencies over the course of nearly a decade involving hundreds of researchers. One of the primary objectives of the intensive campaign was to investigate the ability of atmospheric inversion techniques to use highly calibrated CO2 mixing ratio data to estimate CO2 flux over the major croplands of the United States by comparing the results to an inventory of CO2 fluxes. Statistics from densely monitored crop production, consisting primarily of corn and soybeans, provided the backbone of a well studied bottom-up inventory flux estimate that was used to evaluate the atmospheric inversion results. Estimates were compared to the inventory from three different inversion systems, representing spatial scales varying from high resolution mesoscale (PSU), to continental (CSU) and global (CarbonTracker), coupled to different transport models and optimization techniques. The inversion-based mean CO2-C sink estimates were generally slightly larger, 820% for PSU, 1020% for CSU, and 21% for CarbonTracker, but statistically indistinguishable, from the inventory estimate of 135 TgC. While the comparisons show that the MCI region-wide C sink is robust across inversion system and spatial scale, only the continental and mesoscale inversions were able to reproduce the spatial patterns within the region. In general, the results demonstrate that inversions can recover CO2 fluxes at sub-regional scales with a relatively high density of CO2 observations and adequate information on atmospheric transport in the region.
C1 [Schuh, Andrew E.] Colorado State Univ, Cooperat Inst Res Atmosphere, Ft Collins, CO 80523 USA.
   [Schuh, Andrew E.; Ogle, Stephen] Colorado State Univ, Nat Resources Ecol Lab, Ft Collins, CO 80523 USA.
   [Lauvaux, Thomas; Davis, Kenneth J.; Miles, Natasha; Richardson, Scott] Penn State Univ, Dept Meteorol, University Pk, PA 16802 USA.
   [West, Tristram O.] Pacific NW Natl Lab, Joint Global Change Res Inst, College Pk, MD USA.
   [Denning, A. Scott; Uliasz, Marek] Colorado State Univ, Dept Atmospher Sci, Ft Collins, CO 80523 USA.
   [Lokupitiya, Erandathie] Univ Colombo, Dept Zool, Colombo 03, Sri Lanka.
   [Cooley, Daniel] Colorado State Univ, Dept Stat, Ft Collins, CO 80523 USA.
   [Andrews, Arlyn] NOAA Earth Syst Res Lab, Boulder, CO USA.
RP Schuh, AE (reprint author), Colorado State Univ, Cooperat Inst Res Atmosphere, Ft Collins, CO 80523 USA.
EM aschuh@atmos.colostate.edu
RI West, Tristram/C-5699-2013; Andrews, Arlyn/K-3427-2012; 
OI West, Tristram/0000-0001-7859-0125; Lauvaux, Thomas/0000-0002-7697-742X;
   Ogle, Stephen/0000-0003-1899-7446
FU Office of Science of the US Department of Energy [DE-AC05-76RL01830]
FX Andrew Schuh and Thomas Lauvaux performed the biospheric model runs,
   atmospheric transport runs, and new atmospheric inversions included in
   this manuscript. Tristram West and Stephen Ogle provided most of the
   inventory data used for the 'bottom up' portion of the comparison with
   the exception of fossil fuel inventory data for the MCI region, which
   was provided by Kevin Gurney (Arizona State) and FIA data provided by
   Linda Heath and James Smith (US Forest Service). Natasha Miles and Scott
   Richardson instrumented, maintained and analyzed the PSU 'Ring of
   towers' CO<INF>2</INF> data for the MCI campaign (and the Missouri
   Ozarks tower) while Arlyn Andrews did the same for the WBI and WLEF
   towers within the MCI domain, in addition to the remainder of NOAA's
   tall tower sites across the US. Marek Uliasz provided assistance with
   the LPDM model used by both the PSU and CSU inversions. Dan Cooley
   provided advice and discussion on inversions and state-space modeling.
   Scott Denning provided the majority of the introduction including the
   historical context. Ken Davis and Stephen Ogle helped initiate the
   original campaign, provided many useful comments on manuscript and
   provided overall guidance to the project. The authors would like to
   thank a great many people who were involved with this project as well as
   generous support from the National Aeronautics and Space Administration
   (NASA #NNX08AK08G), National Oceanic and Atmospheric Administration
   (NOAA #NA08OAR4320893) and the Department of Energy (DOE
   #DE-FG02-06ER64317). Thanks to NOAA-ESRL and Andy Jacobson in
   particular, for many useful discussions on these inversions as well as
   the CarbonTracker results which were used in this paper. Tower data were
   graciously provided, and commented on, by Beverly Law and Matthias
   Goeckede (Oregon State University), NOAA-ESRL (Arlyn Andrews), and
   Environment Canada (Doug Worthy). This research used the Evergreen
   computing cluster at the Pacific Northwest National Laboratory.
   Evergreen is supported by the Office of Science of the US Department of
   Energy under Contract No. (DE-AC05-76RL01830).
NR 76
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Z9 25
U1 2
U2 49
PU WILEY
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 1354-1013
EI 1365-2486
J9 GLOBAL CHANGE BIOL
JI Glob. Change Biol.
PD MAY
PY 2013
VL 19
IS 5
BP 1424
EP 1439
DI 10.1111/gcb.12141
PG 16
WC Biodiversity Conservation; Ecology; Environmental Sciences
SC Biodiversity & Conservation; Environmental Sciences & Ecology
GA 121ZN
UT WOS:000317284700009
PM 23505222
ER

PT J
AU Muth, TR
   Yamamoto, Y
   Frederick, DA
   Contescu, CI
   Chen, W
   Lim, YC
   Peter, WH
   Feng, Z
AF Muth, T. R.
   Yamamoto, Y.
   Frederick, D. A.
   Contescu, C. I.
   Chen, W.
   Lim, Y. C.
   Peter, W. H.
   Feng, Z.
TI Causal Factors of Weld Porosity in Gas Tungsten Arc Welding of
   Powder-Metallurgy-Produced Titanium Alloys
SO JOM
LA English
DT Article
ID MICROSTRUCTURE; TOUGHNESS
AB An investigation was undertaken using gas tungsten arc (GTA) welding on consolidated powder metallurgy (PM) titanium (Ti) plate to identify the causal factors behind observed porosity in fusion welding. Tramp element compounds of sodium and magnesium, residual from the metallothermic reduction of titanium chloride used to produce the titanium, were remnant in the starting powder and were identified as gas-forming species. PM-titanium made from revert scrap, where sodium and magnesium were absent, showed fusion weld porosity, although to a lesser degree. We show that porosity was attributable to hydrogen from adsorbed water on the surface of the powders prior to consolidation. The removal and minimization of both adsorbed water on the surface of titanium powder and the residues from the reduction process prior to consolidation of titanium powders are critical for achieving equivalent fusion welding success similar to that seen in wrought titanium produced via the Kroll process.
C1 [Muth, T. R.; Frederick, D. A.; Chen, W.; Lim, Y. C.; Feng, Z.] Oak Ridge Natl Lab, Mat Proc & Joining Grp, Oak Ridge, TN 37831 USA.
   [Yamamoto, Y.] Oak Ridge Natl Lab, Alloy Behav & Design Grp, Oak Ridge, TN 37831 USA.
   [Contescu, C. I.] Oak Ridge Natl Lab, Carbon & Composites Grp, Oak Ridge, TN 37831 USA.
   [Peter, W. H.] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA.
RP Muth, TR (reprint author), Oak Ridge Natl Lab, Mat Proc & Joining Grp, 1 Bethel Rd, Oak Ridge, TN 37831 USA.
EM muthtr@ornl.gov
RI Feng, Zhili/H-9382-2012; 
OI Feng, Zhili/0000-0001-6573-7933; Contescu, Cristian/0000-0002-7450-3722;
   Lim, Yong Chae/0000-0003-2177-3988
NR 14
TC 1
Z9 1
U1 1
U2 36
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 1047-4838
J9 JOM-US
JI JOM
PD MAY
PY 2013
VL 65
IS 5
BP 643
EP 651
DI 10.1007/s11837-013-0592-5
PG 9
WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical
   Engineering; Mineralogy; Mining & Mineral Processing
SC Materials Science; Metallurgy & Metallurgical Engineering; Mineralogy;
   Mining & Mineral Processing
GA 119ZQ
UT WOS:000317139400011
ER

PT J
AU Yeh, GT
   Gwo, JP
   Siegel, MD
   Li, MH
   Fang, YL
   Zhang, F
   Luo, WS
   Yabusaki, SB
AF Yeh, Gour-Tsyh
   Gwo, Jin-Ping
   Siegel, Malcolm D.
   Li, Ming-Hsu
   Fang, Yilin
   Zhang, Fan
   Luo, Wensui
   Yabusaki, Steve B.
TI Innovative mathematical modeling in environmental remediation
SO JOURNAL OF ENVIRONMENTAL RADIOACTIVITY
LA English
DT Article
DE Modeling; Reactive transport; Radioactive contamination; Land
   remediation
ID REACTIVE TRANSPORT; SUBSURFACE MEDIA; GROUNDWATER; URANIUM; COMPONENTS;
   ADSORPTION; PARADIGM; SULFATE; SOIL
AB There are two different ways to model reactive transport: ad hoc and innovative reaction-based approaches. The former, such as the Kd simplification of adsorption, has been widely employed by practitioners, while the latter has been mainly used in scientific communities for elucidating mechanisms of biogeochemical transport processes. It is believed that innovative mechanistic-based models could serve as protocols for environmental remediation as well. This paper reviews the development of a mechanistically coupled fluid flow, thermal transport, hydrologic transport, and reactive biogeochemical model and example-applications to environmental remediation problems. Theoretical bases are sufficiently described. Four example problems previously carried out are used to demonstrate how numerical experimentation can be used to evaluate the feasibility of different remediation approaches. The first one involved the application of a 56-species uranium tailing problem to the Melton Branch Subwatershed at Oak Ridge National Laboratory (ORNL) using the parallel version of the model. Simulations were made to demonstrate the potential mobilization of uranium and other chelating agents in the proposed waste disposal site. The second problem simulated laboratory-scale system to investigate the role of natural attenuation in potential off-site migration of uranium from uranium mill tailings after restoration. It showed inadequacy of using a single Kd even for a homogeneous medium. The third example simulated laboratory experiments involving extremely high concentrations of uranium, technetium, aluminum, nitrate, and toxic metals (e.g., Ni, Cr, Co). The fourth example modeled microbially-mediated immobilization of uranium in an unconfined aquifer using acetate amendment in a field-scale experiment. The purposes of these modeling studies were to simulate various mechanisms of mobilization and immobilization of radioactive wastes and to illustrate how to apply reactive transport models for environmental remediation. (c) 2011 Elsevier Ltd. All rights reserved.
C1 [Yeh, Gour-Tsyh] Taiwan Typhoon & Flood Res Inst, Taipei, Taiwan.
   [Yeh, Gour-Tsyh; Li, Ming-Hsu] Natl Cent Univ, Zhongli City 32001, Taoyuan County, Taiwan.
   [Yeh, Gour-Tsyh] Univ Cent Florida, Orlando, FL 32816 USA.
   [Gwo, Jin-Ping] US Nucl Regulatory Commiss, Rockville, MD USA.
   [Siegel, Malcolm D.] Sandia Natl Labs, Livermore, CA 94550 USA.
   [Fang, Yilin; Yabusaki, Steve B.] Pacific NW Natl Lab, Richland, WA 99352 USA.
   [Zhang, Fan; Luo, Wensui] Chinese Acad Sci, Inst Tibetan Plateau Res, Beijing 100864, Peoples R China.
RP Yeh, GT (reprint author), Natl Cent Univ, Grad Inst Appl Geol, 300 Jhongda Rd, Jhongli 32001, Taoyuan County, Taiwan.
EM gyeh@ncu.edu.tw
RI Fang, Yilin/J-5137-2015
FU Taiwan Typhoon and Flood Research Institute (TTFRI), National Applied
   Research Laboratory (NARL), Taiwan; U.S. Department of Energy, Office of
   Science, Biological and Environmental Research Programs
   [DE-AC05-00OR22725]; Oak Ridge National Laboratory
FX The senior author taking a one-year leave of absence from University of
   Central Florida is supported by Taiwan Typhoon and Flood Research
   Institute (TTFRI), National Applied Research Laboratory (NARL), Taiwan
   in the preparation of this article. Research demonstrated in Example 3
   was mainly performed by Fan Zhang (currently at the Institute of Tibetan
   Plateau Research, China) and Wensui Luo (currently at Institute of Urban
   Environment, China) funded by the U.S. Department of Energy, Office of
   Science, Biological and Environmental Research Programs under Contract
   DE-AC05-00OR22725 with Oak Ridge National Laboratory. Fig. 5 is adapted
   from a graphic authored by K. Vangelas from Savannah River National
   Laboratory.
NR 39
TC 2
Z9 2
U1 2
U2 55
PU ELSEVIER SCI LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
SN 0265-931X
J9 J ENVIRON RADIOACTIV
JI J. Environ. Radioact.
PD MAY
PY 2013
VL 119
SI SI
BP 26
EP 38
DI 10.1016/j.jenvrad.2011.06.010
PG 13
WC Environmental Sciences
SC Environmental Sciences & Ecology
GA 120IC
UT WOS:000317163000005
PM 21813217
ER

PT J
AU Sukumar, P
   Legue, V
   Vayssieres, A
   Martin, F
   Tuskan, GA
   Kalluri, UC
AF Sukumar, Poornima
   Legue, Valerie
   Vayssieres, Alice
   Martin, Francis
   Tuskan, Gerald A.
   Kalluri, Udaya C.
TI Involvement of auxin pathways in modulating root architecture during
   beneficial plantmicroorganism interactions
SO PLANT CELL AND ENVIRONMENT
LA English
DT Review
DE arbuscular mycorrhiza; auxin; ectomycorrhiza; endophytes; plant
   growth-promoting fungi; plant growth-promoting rhizobacteria;
   plantmicrobe interaction; root development
ID FUNGUS HEBELOMA-CYLINDROSPORUM; ARBUSCULAR MYCORRHIZAL FUNGUS;
   PLANT-MICROBE INTERACTIONS; ARABIDOPSIS-THALIANA; PIRIFORMOSPORA-INDICA;
   SYSTEM ARCHITECTURE; LACCARIA-BICOLOR; PINUS-PINASTER; ECTOMYCORRHIZA
   FORMATION; PISOLITHUS-TINCTORIUS
AB A wide variety of microorganisms known to produce auxin and auxin precursors form beneficial relationships with plants and alter host root development. Moreover, other signals produced by microorganisms affect auxin pathways in host plants. However, the precise role of auxin and auxin-signalling pathways in modulating plantmicrobe interactions is unknown. Dissecting out the auxin synthesis, transport and signalling pathways resulting in the characteristic molecular, physiological and developmental response in plants will further illuminate upon how these intriguing inter-species interactions of environmental, ecological and economic significance occur. The present review seeks to survey and summarize the scattered evidence in support of known host root modifications brought about by beneficial microorganisms and implicate the role of auxin synthesis, transport and signal transduction in modulating beneficial effects in plants. Finally, through a synthesis of the current body of work, we present outstanding challenges and potential future research directions on studies related to auxin signalling in plantmicrobe interactions.
C1 [Sukumar, Poornima; Tuskan, Gerald A.; Kalluri, Udaya C.] Oak Ridge Natl Lab, Biosci Div, 1 Bethel Valley Rd, Oak Ridge, TN 37831 USA.
   [Legue, Valerie; Vayssieres, Alice; Martin, Francis] INRA, F-54280 Champenoux, France.
   [Legue, Valerie; Vayssieres, Alice; Martin, Francis] Nancy Univ, INRA, UMR Interact Arbres Microorganismes 1136, INRA Nancy, F-54280 Champenoux, France.
RP Kalluri, UC (reprint author), Oak Ridge Natl Lab, Biosci Div, 1 Bethel Valley Rd, Oak Ridge, TN 37831 USA.
EM kalluriudayc@ornl.gov
RI Tuskan, Gerald/A-6225-2011; 
OI Tuskan, Gerald/0000-0003-0106-1289; valerie, legue/0000-0001-6626-5149;
   KALLURI, UDAYA/0000-0002-5963-8370
FU Plant-Microbe Interface SFA project; Office of Biological and
   Environmental Research in the U.S. Department of Energy Office of
   Science; European Commission within the Project ENERGYPOPLAR
   [FP7-211917]; Region Lorraine; UT-Battelle, LLC [DE-AC05-00OR22725]
FX This work was supported and performed as part of a Plant-Microbe
   Interface SFA project sponsored by the Office of Biological and
   Environmental Research in the U.S. Department of Energy Office of
   Science and the European Commission within the Project ENERGYPOPLAR
   (FP7-211917) and the Region Lorraine. ORNL is managed by UT-Battelle,
   LLC, under contract DE-AC05-00OR22725 for the U. S. Department of
   Energy. A. V., V. L. and F. M. are part of the Laboratory of Excellence
   ARBRE (ANR-12-LABX-0002_ARBRE). We are grateful to Drs Jay Chen, Jessy
   Labbe, Aurelie Deveau and Claire Venault-Fourrey for their comments on
   this manuscript. The authors have no conflict of interest.
NR 92
TC 33
Z9 33
U1 5
U2 172
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 0140-7791
EI 1365-3040
J9 PLANT CELL ENVIRON
JI Plant Cell Environ.
PD MAY
PY 2013
VL 36
IS 5
BP 909
EP 919
DI 10.1111/pce.12036
PG 11
WC Plant Sciences
SC Plant Sciences
GA 122IH
UT WOS:000317311300002
PM 23145472
ER

PT J
AU Chen, XZ
   Huang, YM
   Shen, Z
   Chen, J
   Lei, YC
   Zhou, JZ
AF Chen, X. Z.
   Huang, Y. M.
   Shen, Z.
   Chen, J.
   Lei, Y. C.
   Zhou, J. Z.
TI Effect of thermal cycle on microstructure and mechanical properties of
   CLAM steel weld CGHAZ
SO SCIENCE AND TECHNOLOGY OF WELDING AND JOINING
LA English
DT Article
DE CLAM steel; Physical thermal simulation; Microstructure; Mechanical
   property; CGHAZ
ID CONCEPTUAL DESIGN; CHINA; ALLOY; STRATEGY; JOINTS
AB Based on the previous work of SHCCT diagram developing of China low activation martensitic (CLAM) steel, the effect of thermal cycle on the microstructure and mechanical properties of CLAM steel weld is investigated using physical thermal simulation (Gleeble 3500) to control heat input accurately. Three conditions including single layer, double layer welding and post-weld heat treatment (PWHT) are involved. The results show that higher cooling rate leads to better grain refinement but higher hardness in the coarse grained heat affected zone. Precipitation of delta ferrite is relatively severe when the cooling rate is low. Thermal cycle during double layer welding has an obvious weakening effect on mechanical properties, which mainly results from the larger quantity of delta ferrite precipitates. The microstructure and mechanical properties of CLAM steel joints can be improved by PWHT. Hardness of heat-affected zone tends to keep uniform with the increase of tempering temperature.
C1 [Chen, X. Z.; Huang, Y. M.; Shen, Z.; Lei, Y. C.] Jiangsu Univ, Sch Mat Sci & Engn, Zhenjiang 212013, Peoples R China.
   [Chen, X. Z.] Jiangsu Prov Key Lab High End Struct Mat, Zhenjiang 212013, Peoples R China.
   [Chen, J.] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
   [Zhou, J. Z.] Jiangsu Univ, Sch Mech Engn, Zhenjiang 212013, Peoples R China.
RP Chen, XZ (reprint author), Jiangsu Univ, Sch Mat Sci & Engn, Zhenjiang 212013, Peoples R China.
EM kernel.chen@gmail.com
RI Chen, Xizhang/D-8566-2017; 
OI Chen, Xizhang/0000-0003-1649-1820; Chen, Xizhang/0000-0002-3290-5299
FU National Natural Science Foundation of China [50905079]; China
   Postdoctoral Science Foundation [2011M 501175, 2012T50440]; Postdoctoral
   Project of Jiangsu University [1143002045]; Innovative Research Team of
   Jiangsu University; Priority Development of Jiangsu Higher Education
   Institutions (PAPD)
FX This work is sponsored by the National Natural Science Foundation of
   China under Grant No. 50905079, China Postdoctoral Science Foundation
   (grant nos. 2011M 501175 and 2012T50440), Postdoctoral Project of
   Jiangsu University (grant no. 1143002045) and Innovative Research Team
   of Jiangsu University. This research also partly funded by the Priority
   Development of Jiangsu Higher Education Institutions (PAPD).
NR 16
TC 5
Z9 5
U1 1
U2 31
PU MANEY PUBLISHING
PI LEEDS
PA STE 1C, JOSEPHS WELL, HANOVER WALK, LEEDS LS3 1AB, W YORKS, ENGLAND
SN 1362-1718
J9 SCI TECHNOL WELD JOI
JI Sci. Technol. Weld. Join.
PD MAY
PY 2013
VL 18
IS 4
BP 272
EP 278
DI 10.1179/1362171812Y.0000000095
PG 7
WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical
   Engineering
SC Materials Science; Metallurgy & Metallurgical Engineering
GA 122WP
UT WOS:000317349400001
ER

PT J
AU Zhou, ZH
   Habenicht, BF
   Guo, QL
   Yan, Z
   Xu, Y
   Liu, L
   Goodman, DW
AF Zhou, Zihao
   Habenicht, Bradley F.
   Guo, Qinlin
   Yan, Zhen
   Xu, Ye
   Liu, Li
   Goodman, D. Wayne
TI Graphene moire structure grown on a pseudomorphic metal overlayer
   supported on Ru(0001)
SO SURFACE SCIENCE
LA English
DT Article
DE Graphene moire structures; Ru(0001); Co and Pd pseudomorphic layers;
   Scanning tunneling microscopy; Density function theory
ID SCANNING-TUNNELING-MICROSCOPY; TOTAL-ENERGY CALCULATIONS; WAVE
   BASIS-SET; ELECTRONIC-PROPERTIES; TRANSITION; SURFACE; FILMS;
   DECOMPOSITION; NANOCLUSTERS; SPECTROSCOPY
AB A versatile method is demonstrated to modify graphene-metal interaction by overlaying a pseudomorphic monolayer of transition metal on the substrate metal. Using this method, sample-sized, high-quality graphene has been prepared on a pseudomorphic monolayer of Co and Pd deposited on Ru(0001) respectively, and studied by scanning tunneling microscopy, low energy electron diffraction, Auger electron spectroscopy, and density function theory calculations. Graphene develops moire patterns on the two pseudomorphic monolayer surfaces, with a periodicity that is identical to that of graphene on Ru(0001) but completely different from graphene on Co(0001) and Pd(111). STM measurements, supported by DFT calculations, indicate that graphene on the two surfaces exhibits distinctly different corrugation from that of graphene on Ru(0001), in order of decreasing height Co-ML/Ru>Ru>Pd-ML/Ru, suggesting that this method can be used to tune the interaction strength between graphene and a metal substrate. (C) 2013 Elsevier B.V. All rights reserved.
C1 [Zhou, Zihao; Yan, Zhen; Liu, Li; Goodman, D. Wayne] Texas A&M Univ, Dept Chem, College Stn, TX 77842 USA.
   [Habenicht, Bradley F.; Xu, Ye] Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Oak Ridge, TN 37831 USA.
   [Guo, Qinlin] Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China.
RP Liu, L (reprint author), Texas A&M Univ, Dept Chem, POB 30012, College Stn, TX 77842 USA.
EM li.liu@chem.tamu.edu
RI Xu, Ye/B-5447-2009; Liu, Li/E-8959-2013; Yan, Zhen/I-4842-2013
OI Xu, Ye/0000-0002-6406-7832; Liu, Li/0000-0002-4852-1580; 
FU Center for Atomic Level Catalyst Design, an Energy Frontier Research
   Center; U.S. Department of Energy (US-DOE), Office of Science, Office of
   Basic Energy Sciences [DE-SC0001058]; Robert A. Welch Foundation; US-DOE
   Office of Science [DE-AC02-05CH11231, DE-AC05-00OR22725]
FX This work is supported by the Center for Atomic Level Catalyst Design,
   an Energy Frontier Research Center funded by the U.S. Department of
   Energy (US-DOE), Office of Science, Office of Basic Energy Sciences
   under Award Number DE-SC0001058, and by the Robert A. Welch Foundation.
   The computational work used resources of the National Energy Research
   Scientific Computing Center, which is supported by US-DOE Office of
   Science under Contract DE-AC02-05CH11231; and of the Oak Ridge
   Leadership Computing Facility, which is supported by US-DOE Office of
   Science under Contract DE-AC05-00OR22725, and was performed at Center
   for Nanophase Materials Sciences, Oak Ridge Nantional Laboratory.
NR 55
TC 10
Z9 10
U1 2
U2 83
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0039-6028
EI 1879-2758
J9 SURF SCI
JI Surf. Sci.
PD MAY
PY 2013
VL 611
BP 67
EP 73
DI 10.1016/j.susc.2013.01.016
PG 7
WC Chemistry, Physical; Physics, Condensed Matter
SC Chemistry; Physics
GA 120DY
UT WOS:000317152200011
ER

PT J
AU Donohoe, BS
   Kang, BH
   Gerl, MJ
   Gergely, ZR
   McMichael, CM
   Bednarek, SY
   Staehelin, LA
AF Donohoe, Bryon S.
   Kang, Byung-Ho
   Gerl, Mathias J.
   Gergely, Zachary R.
   McMichael, Colleen M.
   Bednarek, Sebastian Y.
   Staehelin, L. Andrew
TI Cis-Golgi Cisternal Assembly and Biosynthetic Activation Occur
   Sequentially in Plants and Algae
SO TRAFFIC
LA English
DT Article
DE Arabidopsis; cisternal assembly; COPI; COPII; electron tomography; ER
   export sites; ERGIC; ER-to-Golgi transport; Golgi apparatus; p115
   scaffold
ID FLAGELLATE SCHERFFELIA-DUBIA; RETICULUM EXPORT SITES; HIGH-PRESSURE
   FROZEN; ENDOPLASMIC-RETICULUM; MEMBRANE FLOW; ELECTRON TOMOGRAPHY;
   SECRETORY PATHWAY; PICHIA-PASTORIS; COPII VESICLES;
   FUNCTIONAL-ORGANIZATION
AB The cisternal progression/maturation model of Golgi trafficking predicts that cis-Golgi cisternae are formed de novo on the cis-side of the Golgi. Here we describe structural and functional intermediates of the cis cisterna assembly process in high-pressure frozen algae (Scherffelia dubia, Chlamydomonas reinhardtii) and plants (Arabidopsis thaliana, Dionaea muscipula; Venus flytrap) as determined by electron microscopy, electron tomography and immuno-electron microscopy techniques. Our findings are as follows: (i) The cis-most (C1) Golgi cisternae are generated de novo from cisterna initiators produced by the fusion of 35 COPII vesicles in contact with a C2 cis cisterna. (ii) COPII vesicles fuel the growth of the initiators, which then merge into a coherent C1 cisterna. (iii) When a C1 cisterna nucleates its first cisterna initiator it becomes a C2 cisterna. (iv) C2-Cn cis cisternae grow through COPII vesicle fusion. (v) ER-resident proteins are recycled from cis cisternae to the ER via COPIa-type vesicles. (vi) In S. dubia the C2 cisternae are capable of mediating the self-assembly of scale protein complexes. (vii) In plants, approximate to 90% of native -mannosidase I localizes to medial Golgi cisternae. (viii) Biochemical activation of cis cisternae appears to coincide with their conversion to medial cisternae via recycling of medial cisterna enzymes. We propose how the different cis cisterna assembly intermediates of plants and algae may actually be related to those present in the ERGIC and in the pre-cis Golgi cisterna layer in mammalian cells.
C1 [Donohoe, Bryon S.; Kang, Byung-Ho; Gerl, Mathias J.; Gergely, Zachary R.; Staehelin, L. Andrew] Univ Colorado, Boulder, CO 80306 USA.
   [Donohoe, Bryon S.] Natl Renewable Energy Lab, Biosci Ctr, Golden, CO 80401 USA.
   [Kang, Byung-Ho] Univ Florida, Gainesville, FL 32611 USA.
   [Gerl, Mathias J.] Heidelberg Univ, Biochem Ctr, D-69120 Heidelberg, Germany.
   [McMichael, Colleen M.; Bednarek, Sebastian Y.] Univ Wisconsin, Dept Biochem, Madison, WI 53706 USA.
RP Donohoe, BS (reprint author), Univ Colorado, Boulder, CO 80306 USA.
EM bryon.donohoe@nrel.gov; bkang@ufl.edu
RI Kang, Byung-Ho/F-5262-2013; McMichael, Colleen/E-6679-2017; 
OI McMichael, Colleen/0000-0001-5371-9076; Staehelin,
   Andrew/0000-0002-0611-4346
FU National Institutes of Health [GM-61306]; National Science Foundation
   [MCB-0958107]; Center for Direct Catalytic Conversion of Biomass to
   Biofuels (C3Bio); Energy Frontier Research Center; U.S. Department of
   Energy, Office of Science, Office of Basic Energy Sciences
   [DE-SC0000997]
FX We would like to thank Drs David Mastronarde and Tom Giddings, and Mary
   Morphew for technical advice and guidance, and the members of the
   Staehelin laboratory and the Boulder Laboratory for 3-D Electron
   Microscopy of Cells for helpful discussions. We also thank Dr Inhwan
   Hwang and Dr David Robinson for the Arabidopsis GFP-HDEL overexpressor
   line and the AtSec23 antibody. National Institutes of Health grant
   GM-61306 to L. A. S and National Science Foundation grant MCB-0958107 to
   B.-H. K. supported this work. B. S. D was partially supported as part of
   the Center for Direct Catalytic Conversion of Biomass to Biofuels
   (C3Bio), an Energy Frontier Research Center funded by the U.S.
   Department of Energy, Office of Science, Office of Basic Energy
   Sciences, Award Number DE-SC0000997.
NR 86
TC 22
Z9 22
U1 3
U2 56
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 1398-9219
J9 TRAFFIC
JI Traffic
PD MAY
PY 2013
VL 14
IS 5
BP 551
EP 567
DI 10.1111/tra.12052
PG 17
WC Cell Biology
SC Cell Biology
GA 123QY
UT WOS:000317406600007
PM 23369235
ER

PT J
AU Sakamuri, RM
   Price, DN
   Lee, M
   Cho, SN
   Barry, CE
   Via, LE
   Swanson, BI
   Mukundan, H
AF Sakamuri, Rama Murthy
   Price, Dominique N.
   Lee, Myungsun
   Cho, Sang Nae
   Barry, Clifton E., III
   Via, Laura E.
   Swanson, Basil I.
   Mukundan, Harshini
TI Association of lipoarabinomannan with high density lipoprotein in blood:
   Implications for diagnostics
SO TUBERCULOSIS
LA English
DT Article
DE Lipoarabinomannan (LAM); Amphiphiles; Pathogen-associated molecular
   patterns; High-density lipoprotein; Apolipoprotein A1
ID PATHOGEN DETECTION; LAM-ELISA; TUBERCULOSIS; URINE; BIOSENSOR
AB Understanding the pathophysiology of tuberculosis, and the bio-distribution of pathogen-associated molecules in the host is essential for the development of efficient methods of intervention. One of the key virulence factors in the pathology of tuberculosis infection is Lipoarabinomannan (LAM). Previously, we have demonstrated the reliable detection of LAM in urine from tuberculosis patients in a sandwich immunoassay format. We have also applied an ultra-sensitive detection strategy developed for amphiphilic biomarkers, membrane insertion, to the detection of LAM with a limit of detection of 10 fM. Herein, we evaluate the application of membrane insertion to the detection of LAM in patient serum, and demonstrate that the circulating concentrations of 'monomeric' LAM in serum are very low, despite significantly higher concentrations in the urine. Using spiked samples, we demonstrate that this discrepancy is due to the association of LAM with high-density lipoprotein (HDL) nanodiscs in human serum. Indeed, pull-down of HDL nanodiscs from human serum allows for the recovery of HDL-associated LAM. These studies suggest that LAM is likely associated with carrier molecules such as HDL in the blood of patients infected with tuberculosis. This phenomenon may not be limited to LAM in that many pathogen-associated molecular patterns like LAM are amphiphilic in nature and may also be associated with host lipid carriers. Such interactions are likely to affect hostepathogen interactions, pathogen bio-distribution and clearance in the host, and must be thoroughly understood for the effective design of vaccines and diagnostics. Published by Elsevier Ltd.
C1 [Sakamuri, Rama Murthy; Price, Dominique N.; Mukundan, Harshini] Los Alamos Natl Lab, Div Chem, C PCS, Los Alamos, NM 87545 USA.
   [Lee, Myungsun; Cho, Sang Nae] Int TB Res Ctr, Chang Won, South Korea.
   [Barry, Clifton E., III; Via, Laura E.] NIAID, TB Res Sect, NIH, Bethesda, MD 20892 USA.
   [Swanson, Basil I.] Los Alamos Natl Lab, Biosci Div, Los Alamos, NM 87545 USA.
RP Mukundan, H (reprint author), Los Alamos Natl Lab, Div Chem, C PCS, MS J567, Los Alamos, NM 87545 USA.
EM basil@lanl.gov; Harshini@lanl.gov
RI Barry, III, Clifton/H-3839-2012; Sakamuri, Rama Murthy/D-8919-2012; 
OI Sakamuri, Rama Murthy/0000-0002-1640-0709; Via,
   Laura/0000-0001-6074-9521
FU Department of Energy; Los Alamos National Laboratory LDRD Directed
   Research Award; Intramural Research Program of the NIAID, NIH
FX We thank Mr. K. W. Grace for help in waveguide instrumentation and Mr.
   A. S. Anderson for SAM chemistry and technical help. We thank the
   Colorado State University (BEI Resources, operated by the NIAID) for
   purified LAM and antibodies used in this study. The work was supported
   by a Department of Energy and Los Alamos National Laboratory LDRD
   Directed Research Award to Drs. B. T. Korber and B. I. Swanson, and (in
   part) by the Intramural Research Program of the NIAID, NIH.
NR 21
TC 10
Z9 10
U1 0
U2 18
PU CHURCHILL LIVINGSTONE
PI EDINBURGH
PA JOURNAL PRODUCTION DEPT, ROBERT STEVENSON HOUSE, 1-3 BAXTERS PLACE,
   LEITH WALK, EDINBURGH EH1 3AF, MIDLOTHIAN, SCOTLAND
SN 1472-9792
J9 TUBERCULOSIS
JI Tuberculosis
PD MAY
PY 2013
VL 93
IS 3
BP 301
EP 307
DI 10.1016/j.tube.2013.02.015
PG 7
WC Immunology; Microbiology; Respiratory System
SC Immunology; Microbiology; Respiratory System
GA 120PK
UT WOS:000317183000007
PM 23507184
ER

PT J
AU Wang, JD
   Wang, JH
   Liu, C
   Ruiz, JP
AF Wang, Jiadong
   Wang, Jianhui
   Liu, Cong
   Ruiz, Juan P.
TI Stochastic unit commitment with sub-hourly dispatch constraints
SO APPLIED ENERGY
LA English
DT Article
DE Wind power; Electricity markets; Unit commitment; Dispatch
AB In this paper, we propose a new unit commitment model that captures the sub-hourly variability of wind power. Scenarios are included in the stochastic unit commitment formulation to represent the uncertainty and intermittency of wind power output. A modified Benders decomposition method is used to improve the convergence of the algorithm. The numerical results show that the proposed model based on finer granularity outperforms the conventional model of hourly resolution. (C) 2013 Elsevier Ltd. All rights reserved.
C1 [Wang, Jiadong] Lehigh Univ, Ind & Syst Engn Dept, Bethlehem, PA 18015 USA.
   [Wang, Jianhui; Liu, Cong] Argonne Natl Lab, Ctr Energy Environm & Econ Syst Anal CEEESA, Argonne, IL 60439 USA.
   [Ruiz, Juan P.] Carnegie Mellon Univ, Dept Chem Engn, Pittsburgh, PA 15213 USA.
RP Wang, JH (reprint author), Argonne Natl Lab, Ctr Energy Environm & Econ Syst Anal CEEESA, 9700 S Cass Ave, Argonne, IL 60439 USA.
EM jianhui.wang@anl.gov
FU U. S. Department of Energy [Office of Electricity Delivery and Energy
   Reliability] [DE-AC02-06CH11357]
FX Work supported by the U. S. Department of Energy [Office of Electricity
   Delivery and Energy Reliability] under Contract No. DE-AC02-06CH11357.
NR 11
TC 23
Z9 23
U1 2
U2 14
PU ELSEVIER SCI LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
SN 0306-2619
J9 APPL ENERG
JI Appl. Energy
PD MAY
PY 2013
VL 105
BP 418
EP 422
DI 10.1016/j.apenergy.2013.01.008
PG 5
WC Energy & Fuels; Engineering, Chemical
SC Energy & Fuels; Engineering
GA 115SI
UT WOS:000316831800042
ER

PT J
AU Jin, MJ
   Gunawan, C
   Balan, V
   Yu, XR
   Dale, BE
AF Jin, Mingjie
   Gunawan, Christa
   Balan, Venkatesh
   Yu, Xiurong
   Dale, Bruce E.
TI Continuous SSCF of AFEX (TM) pretreated corn stover for enhanced ethanol
   productivity using commercial enzymes and Saccharomyces cerevisiae 424A
   (LNH-ST)
SO BIOTECHNOLOGY AND BIOENGINEERING
LA English
DT Article
DE continuous fermentation; SSCF; SHF; cellulosic ethanol; AFEX; enzymatic
   hydrolysis
ID CELLULOSIC ETHANOL; XYLOSE FERMENTATION; FUEL ETHANOL; 424A(LNH-ST);
   HYDROLYSIS; YIELD; SUGAR
AB High productivity processes are critical for commercial production of cellulosic ethanol. One high productivity processcontinuous hydrolysis and fermentationhas been applied in corn ethanol industry. However, little research related to this process has been conducted on cellulosic ethanol production. Here, we report and compare the kinetics of both batch SHF (separate hydrolysis and co-fermentation) and SSCF (simultaneous saccharification and co-fermentation) of AFEX (Ammonia Fiber Expansion) pretreated corn stover (AFEX-CS). Subsequently, we designed a SSCF process to evaluate continuous hydrolysis and fermentation performance on AFEX-CS in a series of continuous stirred tank reactors (CSTRs). Based on similar sugar to ethanol conversions (around 80% glucose-to-ethanol conversion and 47% xylose-to-ethanol conversion), the overall process ethanol productivity for continuous SSCF was 2.3- and 1.8-fold higher than batch SHF and SSCF, respectively. Slow xylose fermentation and high concentrations of xylose oligomers were the major factors limiting further enhancement of productivity. Biotechnol. Bioeng. 2013; 110: 13021311. (c) 2012 Wiley Periodicals, Inc.
C1 [Jin, Mingjie; Gunawan, Christa; Balan, Venkatesh; Dale, Bruce E.] Michigan State Univ, DOE Great Lakes Bioenergy Res Ctr, Lansing, MI 48910 USA.
   [Jin, Mingjie; Gunawan, Christa; Balan, Venkatesh; Yu, Xiurong; Dale, Bruce E.] Michigan State Univ, Dept Chem Engn & Mat Sci, BCRL, Lansing, MI 48910 USA.
RP Jin, MJ (reprint author), Michigan State Univ, DOE Great Lakes Bioenergy Res Ctr, Lansing, MI 48910 USA.
EM jinmingj@egr.msu.edu
RI Jin, Mingjie/I-4616-2012; 
OI Jin, Mingjie/0000-0002-9493-305X
FU U.S. Department of Energy through the DOE Great Lakes Bioenergy Research
   Center (GLBRC) [DE-FC02-07ER64494]
FX This work was supported by U.S. Department of Energy through the DOE
   Great Lakes Bioenergy Research Center (GLBRC) Grant DE-FC02-07ER64494.
   We would like to thank Genencor, Inc., a division of Danisco Corporation
   for supplying us commercial enzymes for this work. We would also like to
   thank Dr. Nancy Ho (Purdue University) for providing us 424A (LNH-ST)
   strain. Thanks to Mr. Charles Donald, Jr. for preparing AFEX -
   pretreated corn stover.
NR 31
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Z9 10
U1 3
U2 52
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 0006-3592
J9 BIOTECHNOL BIOENG
JI Biotechnol. Bioeng.
PD MAY
PY 2013
VL 110
IS 5
BP 1302
EP 1311
DI 10.1002/bit.24797
PG 10
WC Biotechnology & Applied Microbiology
SC Biotechnology & Applied Microbiology
GA 113BM
UT WOS:000316640800005
PM 23192401
ER

PT J
AU West, KA
   Lee, PKH
   Johnson, DR
   Zinder, SH
   Alvarez-Cohen, L
AF West, Kimberlee A.
   Lee, Patrick K. H.
   Johnson, David R.
   Zinder, Stephen H.
   Alvarez-Cohen, Lisa
TI Global gene expression of Dehalococcoides within a robust dynamic
   TCE-dechlorinating community under conditions of periodic substrate
   supply
SO BIOTECHNOLOGY AND BIOENGINEERING
LA English
DT Article
DE differential expression; microarray; Dehalococcoides; bioremediation;
   chlorinated solvents
ID TRICHLOROETHENE REDUCTIVE DEHALOGENASE; TRANSCRIPTOMIC MICROARRAY
   ANALYSIS; ETHENOGENES STRAIN 195; ENRICHMENT CULTURE; ENVIRONMENTAL
   DISTRIBUTION; GENOME SEQUENCE; VINYL-CHLORIDE; TETRACHLOROETHENE;
   ETHENE; BACTERIUM
AB A microarray targeting four sequenced strains in the Dehalococcoides (Dhc) genus was used to analyze gene expression in a robust long-term trichloroethene (TCE)-degrading microbial community (designated ANAS) during feeding cycles that involve conditions of periodic substrate supply. The Dhc transcriptome was examined at three time-points throughout a batch feeding cycle: T1 (27h) when TCE, dichloroethene (DCE), and vinyl chloride (VC) were present; T2 (54h) when only VC remained; and T3 (13 days) when Dhc had been starved of substrate for 9 days. Ninety percent of the Dhc open reading frames (ORFs) that were detected in the ANAS DNA were found to be expressed as RNA sometime during the time course, demonstrating extraordinary utilization of the streamlined genome. Ninety-seven percent of these transcripts were differentially expressed during the time course indicating efficiency of transcription through regulation in Dhc. Most Dhc genes were significantly down-regulated at T3, responding to a lack of substrate as would be expected. The tceA and vcrA genes, which code for proteins with known chlorinated ethene reduction functions, were highly expressed at both T1 and T2, whereas two other putative reductive dehalogenase genes (DET0173 and DET1545) were most highly expressed at T2, likely in response to the presence of VC. Hydrogenases were most highly expressed at T1, reflecting their important role in accumulating electrons used to initiate reductive dechlorination and other biosynthesis pathways. Cobalamin transport genes were preferentially expressed at T2, reflecting an increase in corrinoid transport as chloroethenes were degraded and a decrease in activity of the transport system after dehalogenation was complete. This is the first application of a microarray targeting a known genus, including both core genomes and identified strain-specific genes, to improve our understanding of transcriptional dynamics within an undefined microbial community. Biotechnol. Bioeng. 2013; 110: 13331341. (c) 2012 Wiley Periodicals, Inc.
C1 [West, Kimberlee A.; Lee, Patrick K. H.; Alvarez-Cohen, Lisa] Univ Calif Berkeley, Dept Civil & Environm Engn, Berkeley, CA 94720 USA.
   [Lee, Patrick K. H.] City Univ Hong Kong, Sch Energy & Environm, Hong Kong, Hong Kong, Peoples R China.
   [Johnson, David R.] Swiss Fed Inst Technol Zurich ETHZ, Dept Environm Sci, Zurich, Switzerland.
   [Johnson, David R.] Swiss Fed Inst Aquat Sci & Technol Eawag, Dept Environm Microbiol, Dubendorf, Switzerland.
   [Zinder, Stephen H.] Cornell Univ, Dept Microbiol, Ithaca, NY USA.
   [Alvarez-Cohen, Lisa] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Earth Sci, Berkeley, CA 94720 USA.
RP Alvarez-Cohen, L (reprint author), Univ Calif Berkeley, Dept Civil & Environm Engn, 726 Davis Hall, Berkeley, CA 94720 USA.
EM alvarez@ce.berkeley.edu
RI Lee, Patrick K H/L-1844-2016
OI Lee, Patrick K H/0000-0003-0911-5317
NR 48
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Z9 8
U1 4
U2 47
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 0006-3592
J9 BIOTECHNOL BIOENG
JI Biotechnol. Bioeng.
PD MAY
PY 2013
VL 110
IS 5
BP 1333
EP 1341
DI 10.1002/bit.24819
PG 9
WC Biotechnology & Applied Microbiology
SC Biotechnology & Applied Microbiology
GA 113BM
UT WOS:000316640800008
PM 23280440
ER

PT J
AU Tolstykh, EI
   Degteva, MO
   Peremyslova, LM
   Shagina, NB
   Vorobiova, MI
   Anspaugh, LR
   Napier, BA
AF Tolstykh, E. I.
   Degteva, M. O.
   Peremyslova, L. M.
   Shagina, N. B.
   Vorobiova, M. I.
   Anspaugh, L. R.
   Napier, B. A.
TI RECONSTRUCTION OF LONG-LIVED RADIONUCLIDE INTAKES FOR TECHA RIVERSIDE
   RESIDENTS: Cs-137
SO HEALTH PHYSICS
LA English
DT Article
DE Cs-137; dose, internal; environmental transport; soil-to-plant transfer
ID MAYAK-PRODUCTION-ASSOCIATION; FLOOD-PLAIN; CONTAMINATION; POPULATION;
   COHORT; SYSTEM; UNCERTAINTIES; SR-90
AB Radioactive contamination of the Techa River (Southern Urals, Russia) occurred from 1949-1956 due to routine and accidental releases of liquid radioactive wastes from the Mayak Production Association. The long-lived radionuclides in the releases were Sr-90 and Cs-137. Contamination of the components of the Techa River system resulted in chronic external and internal exposure of about 30,000 residents of riverside villages. Data on radionuclide intake with diet are used to estimate internal dose in the Techa River Dosimetry System (TRDS), which was elaborated for the assessment of radiogenic risk for Techa Riverside residents. The Sr-90 intake function was recently improved, taking into account the recently available archival data on radionuclide releases and in-depth analysis of the extensive data on Sr-90 measurements in Techa Riverside residents. The main purpose of this paper is to evaluate the dietary intake of Cs-137 by Techa Riverside residents. The Cs-137 intake with river water used for drinking was reconstructed on the basis of the Sr-90 intake-function and the concentration ratio Cs-137-to-Sr-90 in river water. Intake via Cs-137 transfer from floodplain soil to grass and cows' milk was evaluated for the first time. As a result, the maximal Cs-137 intake level was indicated near the site of releases in upper-Techa River settlements (8,000-9,000 kBq). For villages located on the lower Techa River, the Cs-137 intake was significantly less (down to 300 kBq). Cows' milk was the main source of Cs-137 in diet in the upper-Techa River region. Health Phys. 104(5): 481-498; 2013
C1 [Tolstykh, E. I.; Degteva, M. O.; Peremyslova, L. M.; Shagina, N. B.; Vorobiova, M. I.] Urals Res Ctr Radiat Med, Chelyabinsk 454076, Russia.
   [Anspaugh, L. R.] Univ Utah, Dept Radiol, Div Radiobiol, Salt Lake City, UT 84132 USA.
   [Napier, B. A.] Pacific NW Natl Lab, Richland, WA 99352 USA.
RP Tolstykh, EI (reprint author), Urals Res Ctr Radiat Med, Vorovskogo 68 A, Chelyabinsk 454076, Russia.
EM evgenia@urcrm.ru
FU U.S. Department of Energy's Office of International Health Studies;
   Federal Medical-Biological Agency of the Russian Federation
FX This work has been funded by the U.S. Department of Energy's Office of
   International Health Studies and the Federal Medical-Biological Agency
   of the Russian Federation.
NR 39
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U1 0
U2 13
PU LIPPINCOTT WILLIAMS & WILKINS
PI PHILADELPHIA
PA 530 WALNUT ST, PHILADELPHIA, PA 19106-3621 USA
SN 0017-9078
EI 1538-5159
J9 HEALTH PHYS
JI Health Phys.
PD MAY
PY 2013
VL 104
IS 5
BP 481
EP 498
DI 10.1097/HP.0b013e318285bb7a
PG 18
WC Environmental Sciences; Public, Environmental & Occupational Health;
   Nuclear Science & Technology; Radiology, Nuclear Medicine & Medical
   Imaging
SC Environmental Sciences & Ecology; Public, Environmental & Occupational
   Health; Nuclear Science & Technology; Radiology, Nuclear Medicine &
   Medical Imaging
GA 117HR
UT WOS:000316944700005
PM 23532077
ER

PT J
AU Guan, ZY
   Miao, GX
   McLoughlin, R
   Yan, XF
   Cai, D
AF Guan, Ziyu
   Miao, Gengxin
   McLoughlin, Russell
   Yan, Xifeng
   Cai, Deng
TI Co-Occurrence-Based Diffusion for Expert Search on the Web
SO IEEE TRANSACTIONS ON KNOWLEDGE AND DATA ENGINEERING
LA English
DT Article
DE Expert search; web mining; hypergraph; diffusion
ID DOCUMENTS
AB Expert search has been studied in different contexts, e.g., enterprises, academic communities. We examine a general expert search problem: searching experts on the web, where millions of webpages and thousands of names are considered. It has mainly two challenging issues: 1) webpages could be of varying quality and full of noises; 2) The expertise evidences scattered in webpages are usually vague and ambiguous. We propose to leverage the large amount of co-occurrence information to assess relevance and reputation of a person name for a query topic. The co-occurrence structure is modeled using a hypergraph, on which a heat diffusion based ranking algorithm is proposed. Query keywords are regarded as heat sources, and a person name which has strong connection with the query (i.e., frequently co-occur with query keywords and co-occur with other names related to query keywords) will receive most of the heat, thus being ranked high. Experiments on the ClueWeb09 web collection show that our algorithm is effective for retrieving experts and outperforms baseline algorithms significantly. This work would be regarded as one step toward addressing the more general entity search problem without sophisticated NLP techniques.
C1 [Guan, Ziyu; Yan, Xifeng] Univ Calif UCSB, Dept Comp Sci, Santa Barbara, CA 93106 USA.
   [Miao, Gengxin] Univ Calif Santa Barbara, Dept Elect & Comp Engn, Santa Barbara, CA 93106 USA.
   [McLoughlin, Russell] Lawrence Livermore Natl Lab, Biodef Knowledge Ctr, Livermore, CA 94550 USA.
   [McLoughlin, Russell] Univ Calif Santa Barbara, Dept Comp Sci, Santa Barbara, CA 93106 USA.
   [Cai, Deng] Zhejiang Univ, Coll Comp Sci, State Key Lab CAD&CG, Hangzhou 310058, Zhejiang, Peoples R China.
RP Guan, ZY (reprint author), Univ Calif UCSB, Dept Comp Sci, Santa Barbara, CA 93106 USA.
EM ziyuguan@cs.ucsb.edu; miao@umail.ucsb.edu; russ.mcl@gmail.com;
   xyan@cs.ucsb.edu; dengcai@cad.zju.edu.cn
FU Army Research Laboratory [W911NF-09-2-0053]; National Basic Research
   Program of China (973 Program) [2011CB302206]
FX This research was sponsored in part by the Army Research Laboratory
   under cooperative agreement W911NF-09-2-0053 (NS-CTA). D. Cai is
   supported by National Basic Research Program of China (973 Program)
   under Grant 2011CB302206. The views and conclusions contained herein are
   those of the authors and should not be interpreted as representing the
   official policies, either expressed or implied, of the Army Research
   Laboratory or the US Government. The US Government is authorized to
   reproduce and distribute reprints for Government purposes
   notwithstanding any copyright notice herein.
NR 42
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U1 0
U2 8
PU IEEE COMPUTER SOC
PI LOS ALAMITOS
PA 10662 LOS VAQUEROS CIRCLE, PO BOX 3014, LOS ALAMITOS, CA 90720-1314 USA
SN 1041-4347
J9 IEEE T KNOWL DATA EN
JI IEEE Trans. Knowl. Data Eng.
PD MAY
PY 2013
VL 25
IS 5
BP 1001
EP 1014
DI 10.1109/TKDE.2012.49
PG 14
WC Computer Science, Artificial Intelligence; Computer Science, Information
   Systems; Engineering, Electrical & Electronic
SC Computer Science; Engineering
GA 114PT
UT WOS:000316755100004
ER

PT J
AU Djidjev, HN
   Onus, M
AF Djidjev, Hristo N.
   Onus, Melih
TI Scalable and Accurate Graph Clustering and Community Structure Detection
SO IEEE TRANSACTIONS ON PARALLEL AND DISTRIBUTED SYSTEMS
LA English
DT Article
DE Graph clustering; community detection; graph partitioning; multilevel
   algorithms; modularity
ID NETWORKS; MODULARITY
AB One of the most useful measures of cluster quality is the modularity of the partition, which measures the difference between the number of the edges joining vertices from the same cluster and the expected number of such edges in a random graph. In this paper, we show that the problem of finding a partition maximizing the modularity of a given graph G can be reduced to a minimum weighted cut (MWC) problem on a complete graph with the same vertices as G. We then show that the resulting minimum cut problem can be efficiently solved by adapting existing graph partitioning techniques. Our algorithm finds clusterings of a comparable quality and is much faster than the existing clustering algorithms.
C1 [Djidjev, Hristo N.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
   [Onus, Melih] Cankaya Univ, Dept Comp Engn, TR-06810 Ankara, Turkey.
RP Djidjev, HN (reprint author), Los Alamos Natl Lab, POB 1663,MS B256, Los Alamos, NM 87545 USA.
EM djidjev@lanl.gov; melih@cankaya.edu.tr
FU Department of Energy [W-705-ENG-36]
FX The authors would like to thank the developers of METIS for making their
   source code publicly available and to Mark Newman, Jorg Reichardt, and
   Roger Guimera for providing the codes of their algorithms and for
   helpful comments. A preliminary version of this paper was presented at
   Fourth Workshop on Algorithms and Models for the Web-Graph (WAW 2006).
   This work has been supported by the Department of Energy under contract
   W-705-ENG-36.
NR 30
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U1 0
U2 34
PU IEEE COMPUTER SOC
PI LOS ALAMITOS
PA 10662 LOS VAQUEROS CIRCLE, PO BOX 3014, LOS ALAMITOS, CA 90720-1314 USA
SN 1045-9219
EI 1558-2183
J9 IEEE T PARALL DISTR
JI IEEE Trans. Parallel Distrib. Syst.
PD MAY
PY 2013
VL 24
IS 5
BP 1022
EP 1029
DI 10.1109/TPDS.2012.57
PG 8
WC Computer Science, Theory & Methods; Engineering, Electrical & Electronic
SC Computer Science; Engineering
GA 114PO
UT WOS:000316754600016
ER

PT J
AU Chang, C
   Zhou, QL
   Xia, L
   Li, XY
   Yu, QC
AF Chang, Chun
   Zhou, Quanlin
   Xia, Lu
   Li, Xiaoyuan
   Yu, Qingchun
TI Dynamic displacement and non-equilibrium dissolution of supercritical
   CO2 in low-permeability sandstone: An experimental study
SO INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL
LA English
DT Article
DE Geological carbon storage; Core-flood experiment; Residual saturation;
   Relative permeability; Dissolution; The Erdos Basin
ID GEOLOGICAL SEQUESTRATION; CO2-H2O MIXTURES; SALINE AQUIFERS;
   CARBON-DIOXIDE; STORAGE; PRESSURE; TEMPERATURE; SYSTEMS; BRINE; ROCKS
AB An experimental setup was developed for conducting core-flood experiments of supercritical CO2 and water under pressures higher than 8.00 MPa and a temperature of 40 degrees C. Two representative low-permeability sandstone cores were obtained from the Shenhua Group CCS site in the Erdos Basin in China and the experimental study was in support of China's first field test. Unlike most laboratory experiments with two-phase CO2-water flow, dry CO2 was injected in the CO2-flood experiments, and deionized water (without dissolved CO2) was used in the water-flood experiments. In the CO2-flood experiments, dynamic displacement of water by injected CO2 was investigated using transient inlet and outlet pressures and transient flow rates of outflowing CO2 and water. The residual water saturation estimated at the end of the experiments (with an injection rate of 1.2 mL min(-1)) for both cores is 0.52. The higher residual water saturation can be attributed to the high CO2/water viscosity contrast and non-uniform displacement. The estimated relative CO2 permeability at residual water saturation varies from 0.13 to 0.23. During the water-flood experiments, non-equilibrium CO2 dissolution at the core scale was observed using the transient concentration of total dissolved CO2 in outflowing water. The non-equilibrium dissolution possibly results from non-uniform distribution of water and CO2 caused by sub-core heterogeneity. The endpoint CO2 saturation estimated varies from 0.17 to 0.10 for a low injection rate of 0.2 mL min(-1). Additional experiments indicate that higher water injection rate (up to 2 mL min(-1)) drive more free-phase CO2 out of the cores, with less CO2 mass stored, because of CO2 density change with elevated pressure and weaker capillarity for low-permeability sandstone. Additional experiments with injected water of varying dissolved CO2 concentration (including CO2-saturated conditions) indicate that CO2 dissolution mobilizes additional free-phase CO2 out of the cores by enhanced displacement, and increases relative water permeability after CO2 displacement is complete, even though dissolution only accounts for 6-7% of the total CO2 mass initially in the cores before the experiments. (C) 2013 Elsevier Ltd. All rights reserved.
C1 [Chang, Chun; Xia, Lu; Li, Xiaoyuan; Yu, Qingchun] China Univ Geosci, Sch Water Resources & Environm, Beijing 10083, Peoples R China.
   [Zhou, Quanlin] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Earth Sci, Berkeley, CA 94720 USA.
RP Yu, QC (reprint author), China Univ Geosci, Sch Water Resources & Environm, Beijing 10083, Peoples R China.
EM yuqch@cugb.edu.cn
RI Zhou, Quanlin/B-2455-2009
OI Zhou, Quanlin/0000-0001-6780-7536
FU Center for Hydrogeology and Environmental Geology; China Geology Survey;
   National Natural Sciences Foundation of China [41272387]; Special Fund
   for Basic Scientific Research of Central Colleges, China University of
   Geosciences (Beijing) [2011YYL147]; Lawrence Berkeley National
   Laboratory's Directed Research and Development Project [366192]
FX The authors wish to thank Dr. Stefan Bachu, the Associate Editor, and
   two anonymous reviewers for their constructive suggestions for improving
   the quality of the manuscript. This work was supported by the Center for
   Hydrogeology and Environmental Geology, China Geology Survey and funded
   in part by the National Natural Sciences Foundation of China (Grant No.
   41272387) and by the Special Fund for Basic Scientific Research of
   Central Colleges, China University of Geosciences (Beijing) (Grant No.
   2011YYL147). The contribution by the second co-author was supported by
   Lawrence Berkeley National Laboratory's Directed Research and
   Development Project (366192).
NR 36
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U1 2
U2 60
PU ELSEVIER SCI LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
SN 1750-5836
J9 INT J GREENH GAS CON
JI Int. J. Greenh. Gas Control
PD MAY
PY 2013
VL 14
BP 1
EP 14
DI 10.1016/j.ijggc.2012.12.025
PG 14
WC GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY; Energy & Fuels; Engineering,
   Environmental
SC Science & Technology - Other Topics; Energy & Fuels; Engineering
GA 115TL
UT WOS:000316834700001
ER

PT J
AU Breunig, HM
   Birkholzer, JT
   Borgia, A
   Oldenburg, CM
   Price, PN
   McKone, TE
AF Breunig, Hanna M.
   Birkholzer, Jens T.
   Borgia, Andrea
   Oldenburg, Curtis M.
   Price, Phillip N.
   McKone, Thomas E.
TI Regional evaluation of brine management for geologic carbon
   sequestration
SO INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL
LA English
DT Article
DE CO2 capture and sequestration; Pressure management; Spatial
   distribution; Brine management; Geologic carbon sequestration; Renewable
   energy
ID WATER-TREATMENT; CO2 STORAGE; PRESSURE MANAGEMENT; SALINE FORMATIONS;
   DESALINATION; FEASIBILITY; EXTRACTION; GENERATION; MITIGATION; INJECTION
AB Large scale deployment of carbon dioxide (CO2) capture and sequestration (CCS) has the potential to significantly reduce global CO2 emissions, but this technology faces social, economic, and environmental challenges that must be managed early on. Carbon capture technology is water-, energy-, and capital-intensive and proposed geologic carbon sequestration (GCS) storage options, if conducted in pressure-constrained formations, may generate large volumes of extracted brine that require costly disposal. In this study, we evaluate brine management in three locations of the United States (US) and assess whether recovered heat, water, and minerals can turn the brine into a resource. Climate and aquifer parameters varied between the three regions and strongly affected technical feasibility. We discovered that the levelized net present value (NPV) of extracted brine can range from -$50 (a cost) to +$10 (a revenue) per ton of CO2 injected (mt-CO2) for a CO2 point source equivalent to emissions from a 1000 MW coal-fired power plant (CFPP), compared to CCS NPV ranging from -$40 to -$70 per mt-CO2. Upper bound scenarios reflect assumed advancements in current treatment technologies and a favorable market and regulation landscape for brine products and disposal. A regionally appropriate management strategy may be able to treat the extracted brine as a source of revenue, energy, and water. (C) 2013 Elsevier Ltd. All rights reserved.
C1 [Breunig, Hanna M.; Price, Phillip N.; McKone, Thomas E.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Environm Energy Technol Div, Berkeley, CA 94720 USA.
   [Breunig, Hanna M.] Univ Calif Berkeley, Dept Civil & Environm Engn, Berkeley, CA 94720 USA.
   [Birkholzer, Jens T.; Borgia, Andrea; Oldenburg, Curtis M.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Earth Sci, Berkeley, CA 94720 USA.
   [McKone, Thomas E.] Univ Calif Berkeley, Sch Publ Hlth, Berkeley, CA 94720 USA.
RP McKone, TE (reprint author), Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Environm Energy Technol Div, 1 Cyclotron Rd,9R2002, Berkeley, CA 94720 USA.
EM temckone@lbl.gov
RI Oldenburg, Curtis/L-6219-2013; Birkholzer, Jens/C-6783-2011; Breunig,
   Hanna/A-6952-2017
OI Oldenburg, Curtis/0000-0002-0132-6016; Birkholzer,
   Jens/0000-0002-7989-1912; Breunig, Hanna/0000-0002-4727-424X
FU Lawrence Berkeley National Laboratory; US Department of Energy
   [DE-AC02-05CH11231]
FX This research was supported by Laboratory Directed Research and
   Development funding at the Lawrence Berkeley National Laboratory, which
   is operated for US Department of Energy under Contract Grant No.
   DE-AC02-05CH11231. We thank the anonymous reviewers for their insightful
   comments, which greatly improved this paper.
NR 52
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U1 1
U2 34
PU ELSEVIER SCI LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
SN 1750-5836
J9 INT J GREENH GAS CON
JI Int. J. Greenh. Gas Control
PD MAY
PY 2013
VL 14
BP 39
EP 48
DI 10.1016/j.ijggc.2013.01.003
PG 10
WC GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY; Energy & Fuels; Engineering,
   Environmental
SC Science & Technology - Other Topics; Energy & Fuels; Engineering
GA 115TL
UT WOS:000316834700004
ER

PT J
AU Zheng, LG
   Spycher, N
   Birkholzer, J
   Xu, TF
   Apps, J
   Kharaka, Y
AF Zheng, Liange
   Spycher, Nicolas
   Birkholzer, Jens
   Xu, Tianfu
   Apps, John
   Kharaka, Yousif
TI On modeling the potential impacts of CO2 sequestration on shallow
   groundwater: Transport of organics and co-injected H2S by supercritical
   CO2 to shallow aquifers
SO INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL
LA English
DT Article
DE Groundwater; CO2; H2S; Organics; Benzene; Leakage
ID PARTITIONING TRACER TESTS; FRESH-WATER RESOURCES; GEOLOGICAL
   SEQUESTRATION; SURFACE COMPLEXATION; CARBON SEQUESTRATION; THERMODYNAMIC
   MODEL; SUBSURFACE BRINES; ROCK INTERACTIONS; CO2-H2O MIXTURES; MINERAL
   TRAP
AB Proper site selection for CO2 geologic storage requires assessing the impact of potential leakage of CO2 from deep subsurface reservoirs to overlying drinking water aquifers. Although recent studies have largely focused on the mobilization of trace elements in response to the intrusion of CO2 into such aquifers, in this paper we investigate two other leakage issues and potential effects on groundwater quality: the transport of organic compounds by supercritical CO2 from deep storage reservoirs and the upward migration of CO2 with co-injected H2S. Numerical simulations show that organic compounds that may be present at depth, such as benzene, could be mobilized by supercritical CO2 and migrate with the leaking CO2. Modeling results also show that upon the transport of CO2 + H2S mixtures through a hypothetical leakage pathway, H2S arrival in the shallower aquifer is delayed in comparison with that of CO2 due to the preferential dissolution of H2S into the aqueous phase. The potentially adverse impacts of leakage on shallow groundwater quality may be exacerbated for cases of leaking CO2 + H2S, compared to intrusion of pure CO2, possibly leading to the mobilization of thiophilic elements such as arsenic. Geo-chemical reactions included in the simulations involve adsorption/desorption, reductive dissolution of goethite, precipitation of pyrite, siderite, and arsenic sulfide phases. The models presented are generic in nature, exploring important processes regarding organic compounds and co-injected H2S, and calling attention to the need for more site-specific studies taking into account the variability and uncertainty of key hydrogeologic and geochemical parameters. Published by Elsevier B.V.
C1 [Zheng, Liange; Spycher, Nicolas; Birkholzer, Jens; Xu, Tianfu; Apps, John] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
   [Kharaka, Yousif] US Geol Survey, Menlo Pk, CA 94205 USA.
RP Zheng, LG (reprint author), Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
EM lzheng@lbl.gov
RI zheng, liange/B-9748-2011; Birkholzer, Jens/C-6783-2011; Spycher,
   Nicolas/E-6899-2010
OI zheng, liange/0000-0002-9376-2535; Birkholzer, Jens/0000-0002-7989-1912;
   
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PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
SN 1750-5836
J9 INT J GREENH GAS CON
JI Int. J. Greenh. Gas Control
PD MAY
PY 2013
VL 14
BP 113
EP 127
DI 10.1016/j.ijggc.2013.01.014
PG 15
WC GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY; Energy & Fuels; Engineering,
   Environmental
SC Science & Technology - Other Topics; Energy & Fuels; Engineering
GA 115TL
UT WOS:000316834700011
ER

PT J
AU Kneafsey, TJ
   Silin, D
   Ajo-Franklin, JB
AF Kneafsey, Timothy J.
   Silin, Dmitriy
   Ajo-Franklin, Jonathan B.
TI Supercritical CO2 flow through a layered silica sand/calcite sand
   system: Experiment and modified maximal inscribed spheres analysis
SO INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL
LA English
DT Article
DE Wettability; Supercritical CO2; Maximal inscribed spheres; X-ray
   computed tomography; Micro-computed tomography
ID CONTACT-ANGLE MEASUREMENTS; DEEP SALINE AQUIFERS; JOULE-II PROJECT;
   CARBON-DIOXIDE; POROUS-MEDIA; CAPILLARY-PRESSURE; UNDERGROUND DISPOSAL;
   GEOLOGICAL MEDIA; CLIMATE-CHANGE; PORE-SCALE
AB A core-scale experiment in which supercritical carbon dioxide (scCO(2)) was flowed through a brine-saturated sample consisting of a layer of silica sand, a layer of calcite sand, and another layer of silica sand from inlet to outlet was performed, and compared to a similar experiment in which nitrogen was flowed through the same sample at the same orientation, effective stress, and temperature. The core-scale experiments were monitored using X-ray computed tomography to examine the flow paths of the fluids. Both nitrogen and scCO2 showed gravity override, however both flowed through a very narrow pathway through the calcite sand, and a broader pathway through the silica sand. Synchrotron computed microtomography volumes were acquired for sub-samples of each type of sand and reconstructions of the sand samples were analyzed using the maximal inscribed spheres method modified for mixed-wet conditions to estimate characteristic curves for a number of contact angles. These characteristic curves are used to explain and interpret the experimental results. (C) 2013 Elsevier Ltd. All rights reserved.
C1 [Kneafsey, Timothy J.; Silin, Dmitriy; Ajo-Franklin, Jonathan B.] Lawrence Berkeley Natl Lab, Berkeley, CA USA.
RP Kneafsey, TJ (reprint author), Lawrence Berkeley Natl Lab, Berkeley, CA USA.
EM tjkneafsey@lbl.gov
RI Kneafsey, Timothy/H-7412-2014; Ajo-Franklin, Jonathan/G-7169-2015; 
OI Kneafsey, Timothy/0000-0002-3926-8587; Ajo-Franklin,
   Jonathan/0000-0002-6666-4702
FU Lawrence Berkeley National Laboratory (LBNL) of the U.S. Department of
   Energy (DOE) [DE-AC02-05CH11231]; Office of Science, Office of Basic
   Energy Sciences, U.S. DOE [DE-AC02-05CH11231]; Center for Nanoscale
   Control of Geologic CO2, an Energy Frontier Research Center; U.S.
   Department of Energy, Office of Science, Office of Basic Energy Sciences
   [DE-AC02-05CH11231]
FX This work was performed at Lawrence Berkeley National Laboratory (LBNL)
   of the U.S. Department of Energy (DOE) under Contract No.
   DE-AC02-05CH11231. Synchrotron microtomography was performed at the
   Advanced Light Source at LBNL, Beamline 8.3.2 under Approved Program
   ALS-05061, which is supported by the Office of Science, Office of Basic
   Energy Sciences, U.S. DOE under Contract No. DE-AC02-05CH11231 with the
   assistance of Alastair MacDowell and Dula Parkinson. J. Ajo-Franklin was
   supported by the Center for Nanoscale Control of Geologic
   CO<INF>2</INF>, an Energy Frontier Research Center funded by the U.S.
   Department of Energy, Office of Science, Office of Basic Energy Sciences
   under Award Number DE-AC02-05CH11231. X-ray diffraction analysis of the
   calcite was performed by Jonathan Icenhower and SEM/EDS observations
   were performed by Marco Voltolini.
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PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
SN 1750-5836
J9 INT J GREENH GAS CON
JI Int. J. Greenh. Gas Control
PD MAY
PY 2013
VL 14
BP 141
EP 150
DI 10.1016/j.ijggc.2012.12.031
PG 10
WC GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY; Energy & Fuels; Engineering,
   Environmental
SC Science & Technology - Other Topics; Energy & Fuels; Engineering
GA 115TL
UT WOS:000316834700013
ER

PT J
AU Romanov, VN
AF Romanov, Vyacheslav N.
TI Evidence of irreversible CO2 intercalation in montmorillonite
SO INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL
LA English
DT Article
DE Clay; Carbon dioxide; Sorption; Spectroscopy; XRD
ID X-RAY-DIFFRACTION; CARBON-DIOXIDE; SURFACE-AREA; FORCE-FIELD; CLAY;
   SEQUESTRATION; ADSORPTION; SORPTION; STORAGE; XRD
AB Mitigation of the global climate change via sequestration of anthropogenic carbon dioxide (CO2) in geologic formations requires assessment of the reservoir storage capacity and cap rock seal integrity. The typical cap rock is shale or mudstone rich in clay minerals that may significantly affect the effectiveness of the CO2 trapping. Specific objectives of this study were to conduct experimental investigation into the processes associated with CO2 and H2O trapped in swelling clay, namely, Wyoming and Texas montmorillonite powder. Combined (same-sample) multi-technique data - manometric sorption isotherm hysteresis, diffuse reflectance infrared spectroscopy 'trapped CO2' fingerprints, irreversible X-ray diffraction patterns for the clay interlayer in intermediate hydration state, and HF acid digestion resulting in formation of non-extractable F:CO2 adducts - corroborate a hypothesis that carbon dioxide molecules can be irreversibly trapped via anomalous extreme confinement in the galleries associated with montmorillonite interlayer, which may result in formation of carbonates in the longer term. Validation on Arizona montmorillonite lumps substantiated the evidence that such processes may occur in natural clay deposits but possibly on a different scale and at a different rate. Published by Elsevier B.V.
C1 Natl Energy Technol Lab, Pittsburgh, PA 15236 USA.
RP Romanov, VN (reprint author), Natl Energy Technol Lab, POB 10940, Pittsburgh, PA 15236 USA.
EM romanov@netl.doe.gov
RI Romanov, Vyacheslav/C-6467-2008
OI Romanov, Vyacheslav/0000-0002-8850-3539
FU U.S. Department of Energy (DOE) Postgraduate Research Program at the
   National Energy Technology Laboratory; RDS [DE-AC26-04NT41817]
FX The author appreciates assistance with XRD characterization provided by
   Elizabeth Frommell as well as discussions of the technical approach with
   Bret Howard at the National Energy Technology Laboratory. This research
   was supported in part by an appointment to the U.S. Department of Energy
   (DOE) Postgraduate Research Program at the National Energy Technology
   Laboratory administered by the Oak Ridge Institute for Science and
   Education under the RDS contract DE-AC26-04NT41817.
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PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
SN 1750-5836
J9 INT J GREENH GAS CON
JI Int. J. Greenh. Gas Control
PD MAY
PY 2013
VL 14
BP 220
EP 226
DI 10.1016/j.ijggc.2013.01.022
PG 7
WC GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY; Energy & Fuels; Engineering,
   Environmental
SC Science & Technology - Other Topics; Energy & Fuels; Engineering
GA 115TL
UT WOS:000316834700021
ER

PT J
AU Wells, AW
   Diehl, JR
   Strazisar, BR
   Wilson, TH
   Stanko, DC
AF Wells, Arthur W.
   Diehl, J. Rodney
   Strazisar, Brian R.
   Wilson, Thomas H.
   Stanko, Dennis C.
TI Atmospheric and soil-gas monitoring for surface leakage at the San Juan
   Basin CO2 pilot test site at Pump Canyon New Mexico, using
   perfluorocarbon tracers, CO2 soil-gas flux and soil-gas hydrocarbons
SO INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL
LA English
DT Article
DE Sequestration; Monitoring; Tracers
ID SEQUESTRATION; USA; INJECTION; MONTANA; BOZEMAN; COAL
AB Near-surface monitoring and subsurface characterization activities were undertaken in collaboration with the Southwest Regional Carbon Sequestration Partnership on their San Juan Basin coal-bed methane pilot test site near Navajo City, New Mexico. Nearly 18,407 short tons (1.670 x 10(7) kg) of CO2 were injected into 3 seams of the Fruitland coal between July 2008 and April 2009. Between September 18 and October 30, 2008, two additions of approximately 20 L each of perfluorocarbon (PFC) tracers were mixed with the CO2 at the injection wellhead. PFC tracers in soil-gas and in the atmosphere were monitored over a period of 2 years using a rectangular array of permanent installations. Additional monitors were placed near existing well bores and at other locations of potential leakage identified during the pre-injection site survey. Monitoring was conducted using sorbent containing tubes to collect any released PFC tracer from soil-gas or the atmosphere. Near-surface monitoring activities also included CO2 surface flux and carbon isotopes, soil-gas hydrocarbon levels, and electrical conductivity in the soil. The value of the PFC tracers was demonstrated when a significant leakage event was detected near an offset production well. Subsurface characterization activities, including 3D seismic interpretation and attribute analysis, were conducted to evaluate reservoir integrity and the potential that leakage of injected CO2 might occur. Leakage from the injection reservoir was not detected. PFC tracers made breakthroughs at 2 of 3 offset wells which were not otherwise directly observable in produced gases containing 20-30% CO2. These results have aided reservoir geophysical and simulation investigations to track the underground movement of CO2. 3D seismic analysis provided a possible interpretation for the order of appearance of tracers at production wells. Published by Elsevier B.V.
C1 [Wells, Arthur W.; Diehl, J. Rodney; Strazisar, Brian R.; Stanko, Dennis C.] Natl Energy Technol Lab, Pittsburgh, PA 15236 USA.
   [Wilson, Thomas H.] W Virginia Univ, Dept Geol & Geog, Morgantown, WV 26506 USA.
RP Wells, AW (reprint author), Natl Energy Technol Lab, POB 10940, Pittsburgh, PA 15236 USA.
EM wells@netl.doe.gov
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PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
SN 1750-5836
J9 INT J GREENH GAS CON
JI Int. J. Greenh. Gas Control
PD MAY
PY 2013
VL 14
BP 227
EP 238
DI 10.1016/j.ijggc.2012.12.021
PG 12
WC GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY; Energy & Fuels; Engineering,
   Environmental
SC Science & Technology - Other Topics; Energy & Fuels; Engineering
GA 115TL
UT WOS:000316834700022
ER

PT J
AU Jordan, PD
   Benson, SM
AF Jordan, Preston D.
   Benson, Sally M.
TI Worker safety in a mature carbon capture and storage industry in the
   United States based upon analog industry experience
SO INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL
LA English
DT Article
DE Worker safety; Public safety; Analog industry; Carbon capture storage
ID RISK-ASSESSMENT; TRANSPORT; DIOXIDE
AB Insight into worker safety in a mature carbon capture and storage (CCS) industry in the United States (US) can be gained by analogy to a variety of existing industries. Worker safety in capture facility construction will be below median, as is typical for construction. Worker safety in capture operation will be above median based on the oil refining, fossil fuel electric power generation, and industrial gas processing analogs. Pipeline construction and operation worker injury rates will be below median based on analogy with oil and gas pipeline construction and operation; however construction will have the unfortunately typical high fatality rate. Storage field worker safety will be mixed with below median injury rates but high fatality rates based on the oil and gas production analog. Still, safety in the oil and gas production analog is better than in the heavy and civil engineering construction industry and much better than in some other common industries, such as marine and truck transportation. CCS worker safety will be greater than the analogs due to the lack of flammable fluid handling, extremely high or low temperatures, product transportation by truck, and relatively less drilling effort, more geophysics effort, and more onshore work. Many of these differences also suggest CCS will be safer for the public than the analogs. Published by Elsevier B.V.
C1 [Jordan, Preston D.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Earth Sci, Berkeley, CA 94720 USA.
   [Benson, Sally M.] Stanford Univ, Dept Energy Resources Engn, Stanford, CA 94305 USA.
RP Jordan, PD (reprint author), Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Earth Sci, Berkeley, CA 94720 USA.
EM pdjordan@lbl.gov
RI Jordan, Preston/L-1587-2016
OI Jordan, Preston/0000-0001-5853-9517
FU Office of Coal and Power Systems, through the National Energy Technology
   Laboratory (NETL) under Department of Energy [DE-AC02-05CH11231]
FX We are grateful to Jeff Brown, an economist with the BLS. He patiently
   answered our many questions as we sought to understand the numerous data
   streams produced by the BLS regarding employment totals and worker
   safety data. Agnes Lobscheid provided a thoughtful internal review that
   led to the creation of Fig. 1, improvement of the public safety
   implications section, and numerous other improvements, for which we are
   thankful. The two peer reviewer's comments also contributed
   significantly to the organization and thoroughness of the study. Of
   course, the authors take full responsibility for the data analysis and
   conclusions. This work was supported by the Assistant Secretary for
   Fossil Energy, Office of Coal and Power Systems, through the National
   Energy Technology Laboratory (NETL) under Department of Energy Contract
   No. DE-AC02-05CH11231.
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PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
SN 1750-5836
J9 INT J GREENH GAS CON
JI Int. J. Greenh. Gas Control
PD MAY
PY 2013
VL 14
BP 291
EP 303
DI 10.1016/j.ijggc.2012.06.009
PG 13
WC GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY; Energy & Fuels; Engineering,
   Environmental
SC Science & Technology - Other Topics; Energy & Fuels; Engineering
GA 115TL
UT WOS:000316834700028
ER

PT J
AU El Kadiri, H
   Baird, JC
   Kapil, J
   Oppedal, AL
   Cherkaoui, M
   Vogel, SC
AF El Kadiri, Haitham
   Baird, J. C.
   Kapil, J.
   Oppedal, A. L.
   Cherkaoui, M.
   Vogel, Sven C.
TI Flow asymmetry and nucleation stresses of {10(1)over-bar2} twinning and
   non-basal slip in magnesium
SO INTERNATIONAL JOURNAL OF PLASTICITY
LA English
DT Article
DE Grain boundaries; Twinning; Anisotropic material; Crystal plasticity;
   Magnesium non-basal slip
ID GRAIN-SIZE DEPENDENCE; SINGLE-CRYSTALS; PLASTIC-DEFORMATION; PREFERRED
   ORIENTATION; TEXTURE ANALYSIS; ZINC-CRYSTALS; HCP METALS; BASAL SLIP;
   ALLOYS; TWINS
AB Non-Schmid phenomena leading to yield asymmetry are known to occur in BCC metals and intermetallic compounds due to complex mechanisms such as those related to the threedimensional core of screw dislocations, and their resulting cross slip activities sensitive to non-Schmid stresses. In this study, we identify and discuss a flow asymmetry due to a possible dependence of {10 (1) over bar2} twinning and non-basal slip critical resolved shear stresses. Both crystal plasticity simulations and EBSD serial imaging analyses, where an identical region is analyzed at various strain levels, suggested that these non-Schmid effects correlate with the effect of mantle plasticity, which is sensitive to the stress sign and initial texture. It was deduced from EBSD serial imaging analyses that low misoriented grain boundaries underwent a substantially higher nucleation and growth rates of twinning than highly misoriented grain boundaries. Conventional crystal plasticity based on a pseudo-slip approach for twinning was unable to capture these mantle-induced grain boundary effects related to the magnesium tension-compression asymmetry. Published by Elsevier Ltd.
C1 [El Kadiri, Haitham] Mississippi State Univ, Dept Mech Engn, Mississippi State, MS 39762 USA.
   [Baird, J. C.; Kapil, J.; Oppedal, A. L.] Mississippi State Univ, Ctr Adv Vehicular Syst, Mississippi State, MS 39762 USA.
   [Cherkaoui, M.] Georgia Inst Technol, George W Woodruff Sch Mech Engn, Atlanta, GA 30332 USA.
   [Vogel, Sven C.] Los Alamos Natl Lab, Los Alamos Neutron Sci Ctr, Los Alamos, NM 87545 USA.
RP El Kadiri, H (reprint author), Mississippi State Univ, Dept Mech Engn, Mississippi State, MS 39762 USA.
EM elkadiri@me.msstate.edu; aoppedal@cavs.msstate.edu
FU National Science Foundation [CMMI-1235009]; Center for Advanced
   Vehicular Systems (CAVS) at Mississippi State University
FX The authors would like to recognize the National Science Foundation
   which supported this work under the award number: CMMI-1235009. The
   authors would like to recognize the Center for Advanced Vehicular
   Systems (CAVS) at Mississippi State University for supporting this work.
   Also, the authors acknowledge Alan Luo (General Motors Company), Joy
   Hines Forsmark (Ford Motor Company), and John Allison (University of
   Michigan) for providing the materials and part of the funding. This work
   has benefited from fruitful discussions with L.G. Hector, Jr. (General
   Motors Company) who also helped with acquiring the material used in this
   study.
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PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0749-6419
EI 1879-2154
J9 INT J PLASTICITY
JI Int. J. Plast.
PD MAY
PY 2013
VL 44
BP 111
EP 120
DI 10.1016/j.ijplas.2012.11.004
PG 10
WC Engineering, Mechanical; Materials Science, Multidisciplinary; Mechanics
SC Engineering; Materials Science; Mechanics
GA 111OT
UT WOS:000316531300006
ER

PT J
AU Hansen, BL
   Beyerlein, IJ
   Bronkhorst, CA
   Cerreta, EK
   Dennis-Koller, D
AF Hansen, B. L.
   Beyerlein, I. J.
   Bronkhorst, C. A.
   Cerreta, E. K.
   Dennis-Koller, D.
TI A dislocation-based multi-rate single crystal plasticity model
SO INTERNATIONAL JOURNAL OF PLASTICITY
LA English
DT Article
DE Dislocations; Constitutive behavior; Crystal plasticity; Finite strain;
   Rate-dependent material
ID PERSISTENT SLIP BANDS; HIGH-RATE DEFORMATION; SHOCK-LOADED COPPER;
   CLOSE-PACKED METALS; STRAIN-RATE HISTORY; CONSTITUTIVE MODEL;
   SUBSTRUCTURE EVOLUTION; FATIGUED METALS; WALL STRUCTURE; TEMPERATURE
AB The goal of this work is to formulate a constitutive model for the deformation of metallic single crystals over a wide range of strain rates, which is integral to computing reliable stress states of metallic polycrystals under shock loading. An elastic-viscoplastic, slip-based single crystal model that accounts for crystallographic orientation, temperature, and strain rate dependence has been formulated based on dislocation dynamics simulations and existing experimental data. The plastic model transitions from the low-rate, thermally-activated regime, to the high-rate, drag-dominated regime, by use of a distribution of dislocation velocities including kinetic effects. It has been compared favorably with experimental and computational results of copper. The transition to drag-dominated dislocation motion is predicted rather than empirically fit to experimental data. Published by Elsevier Ltd.
C1 [Hansen, B. L.; Beyerlein, I. J.; Bronkhorst, C. A.; Cerreta, E. K.; Dennis-Koller, D.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
RP Bronkhorst, CA (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA.
EM BenHansen@unm.edu; cabronk@lanl.gov
RI Beyerlein, Irene/A-4676-2011; Bronkhorst, Curt/B-4280-2011
OI Bronkhorst, Curt/0000-0002-2709-1964
FU LDRD-DR program at Los Alamos National Laboratory [2010026]
FX This work was funded by the LDRD-DR 2010026 program at Los Alamos
   National Laboratory. Useful discussions with D. Preston and R. LeSar are
   gratefully acknowledged.
NR 54
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PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0749-6419
EI 1879-2154
J9 INT J PLASTICITY
JI Int. J. Plast.
PD MAY
PY 2013
VL 44
BP 129
EP 146
DI 10.1016/j.ijplas.2012.12.006
PG 18
WC Engineering, Mechanical; Materials Science, Multidisciplinary; Mechanics
SC Engineering; Materials Science; Mechanics
GA 111OT
UT WOS:000316531300008
ER

PT J
AU Barton, PT
   Deiterding, R
   Meiron, D
   Pullin, D
AF Barton, P. T.
   Deiterding, R.
   Meiron, D.
   Pullin, D.
TI Eulerian adaptive finite-difference method for high-velocity impact and
   penetration problems
SO JOURNAL OF COMPUTATIONAL PHYSICS
LA English
DT Article
DE Eulerian solid-dynamics; WENO; Adaptive mesh refinement (AMR);
   Level-sets; Ghost-fluid method; High-velocity impacts
ID ELASTIC-PLASTIC SOLIDS; VIRTUAL TEST FACILITY; GHOST FLUID METHOD;
   LEVEL-SET; GODUNOV METHOD; HIGH-ORDER; INTERFACE TRACKING; COMPRESSIBLE
   FLOWS; STRONG SHOCK; MODEL
AB Owing to the complex processes involved, faithful prediction of high-velocity impact events demands a simulation method delivering efficient calculations based on comprehensively formulated constitutive models. Such an approach is presented herein, employing a weighted essentially non-oscillatory (WENO) method within an adaptive mesh refinement (AMR) framework for the numerical solution of hyperbolic partial differential equations. Applied widely in computational fluid dynamics, these methods are well suited to the involved locally non-smooth finite deformations, circumventing any requirement for artificial viscosity functions for shock capturing. Application of the methods is facilitated through using a model of solid dynamics based upon hyper-elastic theory comprising kinematic evolution equations for the elastic distortion tensor. The model for finite inelastic deformations is phenomenologically equivalent to Maxwell's model of tangential stress relaxation. Closure relations tailored to the expected high-pressure states are proposed and calibrated for the materials of interest. Sharp interface resolution is achieved by employing level-set functions to track boundary motion, along with a ghost material method to capture the necessary internal boundary conditions for material interactions and stress-free surfaces. The approach is demonstrated for the simulation of high velocity impacts of steel projectiles on aluminium target plates in two and three dimensions. (C) 2013 Elsevier Inc. All rights reserved.
C1 [Barton, P. T.; Meiron, D.; Pullin, D.] CALTECH, Grad Aerosp Labs, Pasadena, CA 91125 USA.
   [Deiterding, R.] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
RP Barton, PT (reprint author), CALTECH, Grad Aerosp Labs, Pasadena, CA 91125 USA.
EM ptbarton@caltech.edu; deiterdingr@ornl.gov; dim@caltech.edu;
   dale@galcit.caltech.edu
RI Deiterding, Ralf/A-3394-2009
OI Deiterding, Ralf/0000-0003-4776-8183
FU Department of Energy National Nuclear Security Administration
   [DE-FC52-08NA28613]
FX This material is based upon work supported by the Department of Energy
   National Nuclear Security Administration under Award Number
   DE-FC52-08NA28613.
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PI SAN DIEGO
PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA
SN 0021-9991
J9 J COMPUT PHYS
JI J. Comput. Phys.
PD MAY 1
PY 2013
VL 240
BP 76
EP 99
DI 10.1016/j.jcp.2013.01.013
PG 24
WC Computer Science, Interdisciplinary Applications; Physics, Mathematical
SC Computer Science; Physics
GA 114JA
UT WOS:000316735700006
ER

PT J
AU Chen, QS
   Ringler, T
   Gunzburger, M
AF Chen, Qingshan
   Ringler, Todd
   Gunzburger, Max
TI A co-volume scheme for the rotating shallow water equations on
   conforming non-orthogonal grids
SO JOURNAL OF COMPUTATIONAL PHYSICS
LA English
DT Article
DE Co-volume; Finite volume method; Shallow water equations; Computational
   modes; Unstructured grid; Non-orthogonal grid
ID GEOSTROPHIC ADJUSTMENT; MODELS; SPHERE
AB A co-volume scheme is introduced for the rotating shallow water equations, in which both velocity components are specified on cell edges, and the thickness variables evolve on both the primary and the dual cell centers. The scheme applies to generic, conforming and non-orthogonal staggered grids, including the widely used lat-lon quadrilateral grids and the Delaunay-Voronoi tessellations. It can be viewed either as coupled C-grid schemes on the primary and dual meshes, or as an generalization of the traditional E-grid scheme on a new non-overlapping grid. Linear dispersive wave analysis shows that, the dispersive relations resolved by either the primary or the dual mesh of a uniform quadrilateral staggered grid is the same as those of the Z-grid scheme. The total wavenumber space resolved by the staggered grid is twice as large, on which the co-volume behaves exactly like the E-grid scheme. On a uniform hexagon-triangular staggered grid, the co-volume has two steady modes and two inertial-gravity modes on the hexagonal mesh, and one steady mode, two inertial gravity modes, and two spurious modes on the triangular mesh. On the wavenumber space resolved by either the hexagonal or the triangular mesh, the inertial-gravity wave modes remain positive and largely monotone. For the nonlinear shallow water equations, the co-volume scheme is shown to preserve the potential vorticity dynamics and the total energy exactly. Numerical results are presented to corroborate and supplement the analyses. (C) 2013 Elsevier Inc. All rights reserved.
C1 [Chen, Qingshan; Ringler, Todd] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA.
   [Gunzburger, Max] Florida State Univ, Dept Comp Sci, Tallahassee, FL 32306 USA.
RP Chen, QS (reprint author), Los Alamos Natl Lab, Div Theoret, T-3, Los Alamos, NM 87545 USA.
EM qchen@lanl.gov
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PI SAN DIEGO
PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA
SN 0021-9991
J9 J COMPUT PHYS
JI J. Comput. Phys.
PD MAY 1
PY 2013
VL 240
BP 174
EP 197
DI 10.1016/j.jcp.2013.01.003
PG 24
WC Computer Science, Interdisciplinary Applications; Physics, Mathematical
SC Computer Science; Physics
GA 114JA
UT WOS:000316735700011
ER

PT J
AU Talamo, A
AF Talamo, Alberto
TI Numerical solution of the time dependent neutron transport equation by
   the method of the characteristics
SO JOURNAL OF COMPUTATIONAL PHYSICS
LA English
DT Article
DE Neutron transport equation; Method characteristics; Openmp; Yalina
AB This study presents three numerical algorithms to solve the time dependent neutron transport equation by the method of the characteristics. The algorithms have been developed taking into account delayed neutrons and they have been implemented into the novel MCART code, which solves the neutron transport equation for two-dimensional geometry and an arbitrary number of energy groups. The MCART code uses regular mesh for the representation of the spatial domain, it models up-scattering, and takes advantage of OPENMP and OPENGL algorithms for parallel computing and plotting, respectively. The code has been benchmarked with the multiplication factor results of a Boiling Water Reactor, with the analytical results for a prompt jump transient in an infinite medium, and with PARTISN and TDTORT results for cross section and source transients. The numerical simulations have shown that only two numerical algorithms are stable for small time steps. (C) 2012 Elsevier Inc. All rights reserved.
C1 Argonne Natl Lab, Nucl Engn Div, Lemont, IL 60439 USA.
RP Talamo, A (reprint author), Argonne Natl Lab, Nucl Engn Div, 9700 South Cass Ave, Lemont, IL 60439 USA.
EM alby@anl.gov
OI talamo, alberto/0000-0001-5685-0483
FU Office of Global Nuclear Material Threat Reduction, U.S. Department of
   Energy [DE-AC02-06CH11357]
FX The submitted manuscript has been created by UChicago Argonne, LLC,
   Operator of Argonne National Laboratory ("Argonne"). Argonne, a U.S.
   Department of Energy Office of Science laboratory, is operated under
   Contract No. DE-AC02-06CH11357. The U.S. Government retains for itself,
   and others acting on its behalf, a paid-up nonexclusive, irrevocable
   worldwide license in said article to reproduce, prepare derivative
   works, distribute copies to the public, and perform publicly and display
   publicly, by or on behalf of the Government.; The YALINA Thermal project
   is supported by the Office of Global Nuclear Material Threat Reduction,
   U.S. Department of Energy, under contract DE-AC02-06CH11357. The author
   thanks Dr. C. Rabiti (Idaho National Laboratory) for the fruitful
   discussions about this work.
NR 18
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U1 1
U2 15
PU ACADEMIC PRESS INC ELSEVIER SCIENCE
PI SAN DIEGO
PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA
SN 0021-9991
J9 J COMPUT PHYS
JI J. Comput. Phys.
PD MAY 1
PY 2013
VL 240
BP 248
EP 267
DI 10.1016/j.jcp.2012.12.020
PG 20
WC Computer Science, Interdisciplinary Applications; Physics, Mathematical
SC Computer Science; Physics
GA 114JA
UT WOS:000316735700015
ER

PT J
AU Eagleman, Y
   Weber, M
   Derenzo, S
AF Eagleman, Yetta
   Weber, Marvin
   Derenzo, Stephen
TI Luminescence study study of oxygen vacancies in lanthanum hafnium oxide,
   La2Hf2O7
SO JOURNAL OF LUMINESCENCE
LA English
DT Article
DE Hafnate; Lanthanum; Oxygen vacancy
ID SCINTILLATOR; FACILITY
AB Luminescence properties of La2Hf2O7 have been measured for powdered samples prepared by solid state synthesis. These include photoluminescence excitation and emission spectra, x-ray excited spectra, luminescence decay profiles, and reflectivity spectra. The observed luminescence is attributed to self-trapped excitons and transitions involving energy levels of oxygen vacancies. The oxygen-vacancy-related luminescence consists of a broad band in the region 350-750 nm with a peak around 460 nm. The optical and X-ray excited emission spectra differ due to the more selective nature possible with optical excitation. The experimental results are in general agreement with spectroscopic properties predicted by theoretical electronic structure calculations of oxygen vacancy states by Liu et al. in 2007 [15]. The excitation and emission properties of the oxygen vacancy luminescence are shown to vary with the atmosphere and temperature of the synthesis process. (C) 2012 Elsevier B.V. All rights reserved.
C1 [Eagleman, Yetta; Weber, Marvin; Derenzo, Stephen] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
RP Eagleman, Y (reprint author), Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
EM yetta.eagleman@dayzim.com
FU U.S. Department of Homeland Security; U.S. Department of Energy
   [DE-AC02-05CH11231]; United States Government
FX The authors would like to thank Omede Firouz and Greg Bizarri for their
   advice regarding the photoluminescence measurements. In addition, we
   want to thank Anurag Chaudhry and Andrew Canning for their suggestions
   about the investigation of this material. This work was supported by the
   U.S. Department of Homeland Security and was carried out at the Lawrence
   Berkeley National Laboratory under U.S. Department of Energy contract
   no. DE-AC02-05CH11231. Disclaimer: This document was prepared as an
   account of work sponsored by the United States Government. While this
   document is believed to contain correct information, neither the United
   States Government nor any agency thereof, nor The Regents of the
   University of California, nor any of their employees, makes any
   warranty, express or implied, or assumes any legal responsibility for
   the accuracy, completeness, or usefulness of any information, apparatus,
   product, or process disclosed, or represents that its use would not
   infringe privately owned rights. Reference herein to any specific
   commercial product, process, or service by its trade name, trademark,
   manufacturer, or otherwise, does not necessarily constitute or imply its
   endorsement, recommendation, or favoring by the United States Government
   or any agency thereof, or The Regents of the University of California.
   The views and opinions of authors expressed herein do not necessarily
   state or reflect those of the United States Government or any agency
   thereof or The Regents of the University of California.
NR 28
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U1 3
U2 25
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0022-2313
J9 J LUMIN
JI J. Lumines.
PD MAY
PY 2013
VL 137
BP 93
EP 97
DI 10.1016/j.jlumin.2012.10.034
PG 5
WC Optics
SC Optics
GA 115SQ
UT WOS:000316832600018
ER

PT J
AU Campbell, LW
   Gao, F
AF Campbell, L. W.
   Gao, F.
TI Excited state electronic properties of sodium iodide and cesium iodide
SO JOURNAL OF LUMINESCENCE
LA English
DT Article
DE Electronic screening; Electronic lifetime; Electron cascade; Plasmon
   decay; Sodium iodide; Cesium iodide
ID MONTE-CARLO-SIMULATION; GAMMA-RAY INTERACTION; DIELECTRIC-CONSTANT;
   ALKALI-HALIDES; SEMICONDUCTORS; SILICON; CSI; ABSORPTION; DENSITY;
   SOLIDS
AB We compute from first principles the dielectric function, loss function, lifetime and scattering rate of quasiparticles due to electronic losses, and secondary particle spectrum due to plasmon decay in two scintillating alkali halides, sodium iodide and cesium iodide. Particular emphasis is placed on quasiparticles within several multiples of the bandgap from the band edges. A theory for the decay spectra of plasmons and other electronic excitations in crystals is presented. Applications to Monte Carlo radiation transport codes are discussed. (C) 2013 Published by Elsevier B.V.
C1 [Campbell, L. W.; Gao, F.] Pacific NW Natl Lab, Richland, WA 99354 USA.
RP Campbell, LW (reprint author), Pacific NW Natl Lab, 3335 Q Ave Mail Stop J4-80, Richland, WA 99354 USA.
EM luke.campbell@pnnl.gov
FU National Nuclear Security Administration, Office of Nuclear
   Nonproliferation Research and Engineering of the US Department of Energy
   (DOE) at the Pacific Northwest National Laboratory [NA-22]; U.S.
   Department of Energy [DE-AC05-76RL01830]
FX This research was supported by the National Nuclear Security
   Administration, Office of Nuclear Nonproliferation Research and
   Engineering (NA-22), of the US Department of Energy (DOE) at the Pacific
   Northwest National Laboratory, a multiprogram national laboratory
   operated by Battelle for the U.S. Department of Energy under Contract
   DE-AC05-76RL01830.
NR 52
TC 4
Z9 4
U1 1
U2 22
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0022-2313
EI 1872-7883
J9 J LUMIN
JI J. Lumines.
PD MAY
PY 2013
VL 137
BP 121
EP 131
DI 10.1016/j.jlumin.2012.12.058
PG 11
WC Optics
SC Optics
GA 115SQ
UT WOS:000316832600023
ER

PT J
AU Whiteley, CE
   Kirkham, MJ
   Edgar, JH
AF Whiteley, C. E.
   Kirkham, M. J.
   Edgar, J. H.
TI The coefficients of thermal expansion of boron arsenide (B12As2) between
   25 degrees C and 850 degrees C
SO JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
LA English
DT Article
DE Electronic materials; Semiconductors; Chemical synthesis; X-ray
   diffraction; Thermal expansion
ID RICH SOLIDS; CRYSTALS; CARBIDE; SILICON
AB The present investigation was undertaken to determine the coefficients of thermal expansion for the boron-rich compound semiconductor icosahedral boron arsenide (B12As2). B12As2 powder was synthesized in a sealed quartz ampoule containing boron and arsenic heated to 1100 degrees C and 600 degrees C respectively for 72 h. The lattice constants of the B12As2 were measured by high temperature X-ray diffraction (HTXRD) between 25 degrees C and 850 degrees C. The average lattice coefficients of thermal expansion were calculated perpendicular and parallel to the < 111 > axis in the rhombohedral setting (equivalent to the a and c axes in the hexagonal setting) as 4.9 x 10(-6) K-1 and 5.3 x 10(-6) K-1 respectively. The average unit cell volumetric coefficient of thermal expansion was 15.0 x 10(-6) K-1. Knowing these values can be useful in explaining the cracking that occurs in heteroepitaxial B12As2 thin films and crystals precipitated from metal solutions upon cooling from their synthesis temperatures. (C) 2013 Elsevier Ltd. All rights reserved.
C1 [Whiteley, C. E.; Edgar, J. H.] Kansas State Univ, Dept Chem Engn, Manhattan, KS 66506 USA.
   [Kirkham, M. J.] Oak Ridge Natl Lab, High Temp Mat Lab, Oak Ridge, TN 37831 USA.
RP Edgar, JH (reprint author), Kansas State Univ, Dept Chem Engn, Durland Hall, Manhattan, KS 66506 USA.
EM edgarjh@ksu.edu
RI Kirkham, Melanie/B-6147-2011
OI Kirkham, Melanie/0000-0001-8411-9751
FU National Science Foundation [CBET 0736154]; Department of Homeland
   Security [2008-DN-077-ARI013-03]; II-VI Inc. Foundation; Oak Ridge
   National Laboratory's SHARE User Facility; Office of Basic Energy
   Sciences, U.S. Department of Energy; U.S. Department of Energy, Office
   of Energy Efficiency and Renewable Energy, Vehicle Technologies Program
FX The present manuscript was based in part on Clinton Whiteley's doctoral
   thesis work recently completed at Kansas State University. Financial
   support was supplied by the National Science Foundation (CBET 0736154),
   the Department of Homeland Security (2008-DN-077-ARI013-03), and the
   II-VI Inc. Foundation; Research supported in part by the Oak Ridge
   National Laboratory's SHARE User Facility, which is sponsored by the
   Office of Basic Energy Sciences, U.S. Department of Energy. The X-ray
   diffractometers are part of the High Temperature Materials Laboratory
   sponsored by the U.S. Department of Energy, Office of Energy Efficiency
   and Renewable Energy, Vehicle Technologies Program.
NR 18
TC 3
Z9 3
U1 1
U2 25
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0022-3697
J9 J PHYS CHEM SOLIDS
JI J. Phys. Chem. Solids
PD MAY
PY 2013
VL 74
IS 5
BP 673
EP 676
DI 10.1016/j.jpcs.2012.12.026
PG 4
WC Chemistry, Multidisciplinary; Physics, Condensed Matter
SC Chemistry; Physics
GA 110FW
UT WOS:000316429000005
ER

PT J
AU Ben-Naim, E
   Hengartner, NW
   Redner, S
   Vazquez, F
AF Ben-Naim, E.
   Hengartner, N. W.
   Redner, S.
   Vazquez, F.
TI Randomness in Competitions
SO JOURNAL OF STATISTICAL PHYSICS
LA English
DT Article
DE Competitions; Social dynamics; Kinetic theory; Scaling laws; Algorithms
ID DYNAMICS; STATISTICS; BASEBALL; MODEL
AB We study the effects of randomness on competitions based on an elementary random process in which there is a finite probability that a weaker team upsets a stronger team. We apply this model to sports leagues and sports tournaments, and compare the theoretical results with empirical data. Our model shows that single-elimination tournaments are efficient but unfair: the number of games is proportional to the number of teams N, but the probability that the weakest team wins decays only algebraically with N. In contrast, leagues, where every team plays every other team, are fair but inefficient: the top of teams remain in contention for the championship, while the probability that the weakest team becomes champion is exponentially small. We also propose a gradual elimination schedule that consists of a preliminary round and a championship round. Initially, teams play a small number of preliminary games, and subsequently, a few teams qualify for the championship round. This algorithm is fair and efficient: the best team wins with a high probability and the number of games scales as N (9/5), whereas traditional leagues require N (3) games to fairly determine a champion.
C1 [Ben-Naim, E.] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA.
   [Ben-Naim, E.] Los Alamos Natl Lab, Ctr Nonlinear Studies, Los Alamos, NM 87545 USA.
   [Hengartner, N. W.] Los Alamos Natl Lab, Comp & Comp Sci Div, Los Alamos, NM 87545 USA.
   [Redner, S.] Boston Univ, Dept Phys, Boston, MA 02215 USA.
   [Vazquez, F.] Max Planck Inst Phys Komplexer Syst, D-01187 Dresden, Germany.
RP Ben-Naim, E (reprint author), Los Alamos Natl Lab, Div Theoret, POB 1663, Los Alamos, NM 87545 USA.
EM ebn@lanl.gov
RI Ben-Naim, Eli/C-7542-2009
OI Ben-Naim, Eli/0000-0002-2444-7304
FU DOE [DE-AC52-06NA25396]; NSF [DMR0227670, DMR0535503, DMR-0906504]
FX We thank Micha Ben-Naim for help with data collection. We acknowledge
   support from DOE (DE-AC52-06NA25396) and NSF (DMR0227670, DMR0535503, &
   DMR-0906504).
NR 39
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Z9 6
U1 1
U2 23
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 0022-4715
J9 J STAT PHYS
JI J. Stat. Phys.
PD MAY
PY 2013
VL 151
IS 3-4
BP 458
EP 474
DI 10.1007/s10955-012-0648-x
PG 17
WC Physics, Mathematical
SC Physics
GA 116OW
UT WOS:000316893000004
ER

PT J
AU Senkov, ON
   Cheng, YQ
AF Senkov, O. N.
   Cheng, Y. Q.
TI Ab Initio Molecular Dynamics Simulation of the Amorphous Structure of
   Ca-Mg-Cu and Ca-Mg-Zn Alloys
SO METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND
   MATERIALS SCIENCE
LA English
DT Article
ID BULK METALLIC GLASSES; AUGMENTED-WAVE METHOD; FORMING ABILITY;
   THERMAL-STABILITY; LIQUID-METALS; PRINCIPLES; PACKINGS; RANGE; ORDER;
   MODEL
AB The atomic and electronic structures of several Ca-Mg-TM amorphous alloys (TM is Cu or Zn) have been analyzed using ab initio molecular dynamics simulation and neutron diffraction. Partial pair distribution functions have been produced and the pair bond distances and partial coordination numbers have been reported for these alloys. Similarities and differences in the amorphous structures of the Ca-Mg-Cu and Ca-Mg-Zn alloys have been discussed. Strong interactions between Ca-Cu, Mg-Cu and Ca-Zn atom pairs rooted from the orbital hybridization of the s-p-d electrons have been recognized to result in noticeable shortening of respective atom pair bond distances and pronounced chemical short range ordering near the TM atoms. Voronoi tessellation analysis has shown that the polytetrahedral-type clusters and five-coordinated atom pairs dominate in the amorphous structures, which indicates that tetrahedra and pentagonal bi-pyramids are the main building blocks in these amorphous alloys. DOI: 10.1007/s11661-012-1406-z (C) The Minerals, Metals & Materials Society and ASM International (outside the USA) 2012
C1 [Senkov, O. N.] UES Inc, Dayton, OH USA.
   [Senkov, O. N.] USAF, Res Lab, Wright Patterson AFB, OH 45433 USA.
   [Cheng, Y. Q.] Oak Ridge Natl Lab, Chem & Engn Mat Div, Oak Ridge, TN 37831 USA.
   [Cheng, Y. Q.] Johns Hopkins Univ, Dept Mat Sci & Engn, Baltimore, MD 21218 USA.
RP Senkov, ON (reprint author), UES Inc, Dayton, OH USA.
EM oleg.senkov@wpafb.af.mil
RI Senkov, Oleg/C-7197-2012; Cheng, Yongqiang/F-6567-2010
OI Senkov, Oleg/0000-0001-5587-415X; 
FU Science and Technology Facilities Council [RB 820097]; Air Force Office
   of Scientific Research [10RX14COR]; Air Force through UES, Inc., Dayton,
   OH [FA8650-10-D-5226]; Scientific User Facilities Division, Office of
   Basic Energy Sciences, US Department of Energy; National Science
   Foundation [NSF-DMR 0904188]
FX We thank D. B. Miracle for careful reading of the manuscript and
   valuable suggestions. Technical support from E.R. Barney, A.C. Hannon
   and J.M. Scott in conducting neutron experiments is recognized. The
   neutron experiments at the ISIS Pulsed Neutron and Muon Source were
   supported by a beamtime allocation RB 820097 from the Science and
   Technology Facilities Council. Work at the Air Force Research Laboratory
   was supported through the Air Force Office of Scientific Research (M.
   Berman, Program Manager, Grant Number 10RX14COR) and the Air Force under
   on-site contract No. FA8650-10-D-5226 conducted through UES, Inc.,
   Dayton, OH. Y.Q.C. is supported by the Scientific User Facilities
   Division, Office of Basic Energy Sciences, US Department of Energy.
   Computational resources were made available through the Center of
   Nanophase Materials Sciences and TeraGrid, Oak Ridge National
   Laboratory. Work at John Hopkins University was supported through the
   National Science Foundation under Contract No. NSF-DMR 0904188.
NR 47
TC 3
Z9 3
U1 2
U2 50
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 1073-5623
EI 1543-1940
J9 METALL MATER TRANS A
JI Metall. Mater. Trans. A-Phys. Metall. Mater. Sci.
PD MAY
PY 2013
VL 44A
IS 5
BP 1980
EP 1989
DI 10.1007/s11661-012-1406-z
PG 10
WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical
   Engineering
SC Materials Science; Metallurgy & Metallurgical Engineering
GA 114SJ
UT WOS:000316762400003
ER

PT J
AU Guo, W
   Dmowski, W
   Noh, JY
   Rack, P
   Liaw, PK
   Egami, T
AF Guo, Wei
   Dmowski, Wojciech
   Noh, Ji-Yong
   Rack, Philip
   Liaw, Peter K.
   Egami, Takeshi
TI Local Atomic Structure of a High-Entropy Alloy: An X-Ray and Neutron
   Scattering Study
SO METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND
   MATERIALS SCIENCE
LA English
DT Article
AB By using high-energy synchrotron X-ray and neutron scattering, the local structure of a ternary high-entropy alloy Zr1/3Nb1/3Hf1/3 is characterized by means of pair distribution function (PDF) analysis. Results show that this alloy is a body center cubic (b.c.c.) phase in both bulk sample and in a thin film similar to 1.5 A mu m thick. The PDFs obtained from X-ray diffraction and neutron diffraction agree well with each other. The measured PDFs differ from the calculated PDF, particularly in the peak shape of the first two peaks, indicating local lattice distortion due to different atomic sizes in the solid solution. DOI: 10.1007/s11661-012-1474-0 (C) The Minerals, Metals & Materials Society and ASM International 2012
C1 [Guo, Wei; Dmowski, Wojciech; Noh, Ji-Yong; Rack, Philip; Liaw, Peter K.] Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USA.
   [Egami, Takeshi] Univ Tennessee, Dept Mat Sci & Engn, Joint Inst Neutron Sci, Knoxville, TN 37996 USA.
   [Egami, Takeshi] Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA.
   [Egami, Takeshi] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
RP Guo, W (reprint author), Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USA.
EM pliaw@utk.edu
OI Rack, Philip/0000-0002-9964-3254
FU U.S. Department of Energy (DOE), Office of Science [DE-AC02-06CH11357];
   US Department of Energy, Office of Science, Office of Basic Energy
   Science [DE-AC52-06NA25396]; Department of Energy EPSCoR
   [DE-FG02-08ER46528]
FX The authors would like to thank D. Robinson for help at the ID-6
   beamline setup and A. Llobet for the experiments conducted on the HIPD
   beamline of the Lujan Neutron Scattering Center at thw Los Alamos
   National Laboratory. Use of the Advanced Photon Source is supported by
   the U.S. Department of Energy (DOE), Office of Science, under Contract
   No. DE-AC02-06CH11357. The Lujan Center of the Los Alamos National
   Laboratory is funded by the US Department of Energy, Office of Science,
   Office of Basic Energy Science, under contract No. DE-AC52-06NA25396.
   This project was supported by the Department of Energy EPSCoR
   Implementation award, DE-FG02-08ER46528.
NR 9
TC 37
Z9 37
U1 13
U2 140
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 1073-5623
J9 METALL MATER TRANS A
JI Metall. Mater. Trans. A-Phys. Metall. Mater. Sci.
PD MAY
PY 2013
VL 44A
IS 5
BP 1994
EP 1997
DI 10.1007/s11661-012-1474-0
PG 4
WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical
   Engineering
SC Materials Science; Metallurgy & Metallurgical Engineering
GA 114SJ
UT WOS:000316762400005
ER

PT J
AU Furuta, T
   Kuramoto, S
   Morris, JW
   Nagasako, N
   Withey, E
   Chrzan, DC
AF Furuta, T.
   Kuramoto, S.
   Morris, J. W., Jr.
   Nagasako, N.
   Withey, E.
   Chrzan, D. C.
TI The mechanism of strength and deformation in Gum Metal
SO SCRIPTA MATERIALIA
LA English
DT Article
DE Gum Metal; Ideal strength; Stress-induced martensite; Dislocation-free
   mechanism
ID TRANSMISSION ELECTRON-MICROSCOPY; PLASTIC-DEFORMATION; ALLOYS;
   SUPERELASTICITY; BEHAVIOR
AB "Gum Metal" refers to beta-Ti alloys that achieve exceptional elastic elongation and, with a specific alloy composition, appear to deform via a dislocation-free mechanism involving elastic instability at the limit of strength. This paper describes the current status of research on its strength, deformation mechanism and the possible role of stress-induced martensite. The theoretical basis for deformation at ideal strength is presented. The relevant experimental data is then discussed, including ex situ nanoindentation behavior and in situ pillar compression observed by transmission electron microscopy. (c) 2013 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
C1 [Furuta, T.; Kuramoto, S.; Nagasako, N.] Toyota Cent R&D Lab, Nagakute, Aichi 4801192, Japan.
   [Morris, J. W., Jr.; Chrzan, D. C.] Univ Calif Berkeley, Dept Mat Sci & Engn, Berkeley, CA 94720 USA.
   [Withey, E.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
RP Furuta, T (reprint author), Toyota Cent R&D Lab, Nagakute, Aichi 4801192, Japan.
EM e0646@mosk.tytlabs.co.jp
FU National Science Foundation [DMR 0706554]; Toyota Central RD Labs., Inc.
FX The research done by J.W.M., E.W. and D.C. was supported by the National
   Science Foundation under Grant DMR 0706554 and by Toyota Central R&D
   Labs., Inc. under a grant to the University of California Berkeley.
NR 35
TC 9
Z9 9
U1 1
U2 97
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 1359-6462
J9 SCRIPTA MATER
JI Scr. Mater.
PD MAY
PY 2013
VL 68
IS 10
BP 767
EP 772
DI 10.1016/j.scriptamat.2013.01.027
PG 6
WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary;
   Metallurgy & Metallurgical Engineering
SC Science & Technology - Other Topics; Materials Science; Metallurgy &
   Metallurgical Engineering
GA 117TR
UT WOS:000316976500001
ER

PT J
AU Brons, JG
   Padilla, HA
   Thompson, GB
   Boyce, BL
AF Brons, J. G.
   Padilla, H. A., II
   Thompson, G. B.
   Boyce, B. L.
TI Cryogenic indentation-induced grain growth in nanotwinned copper
SO SCRIPTA MATERIALIA
LA English
DT Article
DE Grain growth; Microindentation; Twinning; Coincidence lattice;
   Precession enhanced electron diffraction
ID BOUNDARIES; MOBILITY; ALUMINUM; ALLOYS
AB Nanocrystalline copper thin films with as-deposited Sigma 3 twin boundaries were indented while immersed in liquid nitrogen. Quantification using precession-enhanced electron diffraction determined the crystallographic texture and grain-to-grain misorientation of the undeformed, pile-up and compressed regions. Grains in the undeformed region retained a high density of Sigma 3 recrystallization twins, whereas the pile-up showed significant coarsening, prevalent Sigma 7 subgrain formation and a decrease in twin boundaries. The abnormal grain growth is attributed to a detwinning mechanism. The compressed region showed significant grain refinement. (c) 2013 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
C1 [Brons, J. G.; Thompson, G. B.] Univ Alabama, Dept Met Engn, Tuscaloosa, AL 35405 USA.
   [Padilla, H. A., II; Boyce, B. L.] Sandia Natl Labs, Albuquerque, NM 87123 USA.
RP Thompson, GB (reprint author), Univ Alabama, Dept Met Engn, Tuscaloosa, AL 35405 USA.
EM gthompson@eng.ua.edu
FU US Department of Energy, Office of Basic Energy Sciences; United States
   Department of Energy's National Nuclear Security Administration
   [DE-AC04-94AL85000]
FX This work was supported by the US Department of Energy, Office of Basic
   Energy Sciences. J.G.B. and G.B.T. received additional supplementary
   support from NSF-EPS-0814103. The authors acknowledge Dr. Khalid Hattar
   for performing the pulsed laser depositions and Dr. Eric Homer for
   useful discussions on CSL boundaries. FIB access was provided by DOE's
   Center for Integrated NanoTechnology (CINT). Sandia is a multiprogram
   laboratory operated by Sandia Corporation, a Lockheed Martin Company,
   for the United States Department of Energy's National Nuclear Security
   Administration under contract DE-AC04-94AL85000.
NR 17
TC 8
Z9 9
U1 3
U2 33
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 1359-6462
J9 SCRIPTA MATER
JI Scr. Mater.
PD MAY
PY 2013
VL 68
IS 10
BP 781
EP 784
DI 10.1016/j.scriptamat.2012.12.026
PG 4
WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary;
   Metallurgy & Metallurgical Engineering
SC Science & Technology - Other Topics; Materials Science; Metallurgy &
   Metallurgical Engineering
GA 117TR
UT WOS:000316976500004
ER

PT J
AU Ruestes, CJ
   Bringa, EM
   Stukowski, A
   Nieva, JFR
   Bertolino, G
   Tang, Y
   Meyers, MA
AF Ruestes, C. J.
   Bringa, E. M.
   Stukowski, A.
   Nieva, J. F. Rodriguez
   Bertolino, G.
   Tang, Y.
   Meyers, M. A.
TI Atomistic simulation of the mechanical response of a nanoporous
   body-centered cubic metal
SO SCRIPTA MATERIALIA
LA English
DT Article
DE Molecular dynamics; Dislocations; Nanoporous; Nanovoid
ID SHOCK COMPRESSION; VOID GROWTH; FCC METALS; BCC METALS; TANTALUM;
   COPPER; DISLOCATIONS; DEFORMATION; PLASTICITY; TRANSITION
AB Uniaxial strain compression of a Ta monocrystal containing randomly placed nanovoids was studied using molecular dynamics simulations. Interacting voids decrease the stress required for the onset of plasticity, in comparison with earlier studies for isolated voids. Dislocations resulting from loading are emitted from void surfaces as shear loops, with their interactions leading to hardening. Plastic activity leads to a decrease in porosity, with voids disappearing at 14% strain. The resulting dislocation densities agree well with experimental results. (c) 2013 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
C1 [Ruestes, C. J.; Bringa, E. M.] Univ Nacl Cuyo, Inst Ciencias Basicas, RA-5500 Mendoza, Argentina.
   [Bringa, E. M.] Consejo Nacl Invest Cient & Tecn, RA-5500 Mendoza, Argentina.
   [Stukowski, A.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
   [Nieva, J. F. Rodriguez] MIT, Cambridge, MA 02139 USA.
   [Bertolino, G.] CONICET Ctr Atom Bariloche, RA-8400 San Carlos De Bariloche, Rio Negro, Argentina.
   [Tang, Y.; Meyers, M. A.] Univ Calif San Diego, La Jolla, CA 92093 USA.
RP Ruestes, CJ (reprint author), Univ Nacl Cuyo, Inst Ciencias Basicas, RA-5500 Mendoza, Argentina.
EM cjruestes@hotmail.com
RI Tang, Yizhe/A-2603-2014; Albe, Karsten/F-1139-2011; Meyers,
   Marc/A-2970-2016; 
OI Tang, Yizhe/0000-0002-2744-3819; Meyers, Marc/0000-0003-1698-5396;
   Ruestes, Carlos/0000-0002-2764-1508; Stukowski,
   Alexander/0000-0001-6750-3401
FU PFDT scholarship; SeCTyP-UNCuyo; UC Research Labs;  [PICT2008-1325]; 
   [PICT2009-0092]
FX C.J.R. is grateful for the support of a PFDT scholarship. E.M.B. and
   C.J.R. are grateful for support from grants PICT2008-1325, PICT2009-0092
   and SeCTyP-UNCuyo. Y.T. and M.A.M. thank the UC Research Labs for a
   grant. Discussions with V. Lubarda and X. Markenscoff are kindly
   acknowledged.
NR 41
TC 12
Z9 12
U1 2
U2 65
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 1359-6462
J9 SCRIPTA MATER
JI Scr. Mater.
PD MAY
PY 2013
VL 68
IS 10
BP 817
EP 820
DI 10.1016/j.scriptamat.2013.01.035
PG 4
WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary;
   Metallurgy & Metallurgical Engineering
SC Science & Technology - Other Topics; Materials Science; Metallurgy &
   Metallurgical Engineering
GA 117TR
UT WOS:000316976500013
ER

PT J
AU Geng, J
   Park, H
   Sajo, E
AF Geng, J.
   Park, H.
   Sajo, E.
TI Simulation of Aerosol Coagulation and Deposition Under Multiple Flow
   Regimes with Arbitrary Computational Precision
SO AEROSOL SCIENCE AND TECHNOLOGY
LA English
DT Article
ID ACOUSTIC AGGLOMERATION PROCESSES; BROWNIAN COAGULATION; DYNAMIC
   EQUATION; AGGREGATE SIZE; PARTICLES; EVOLUTION; GROWTH; KERNEL; MODELS
AB In computational aerosol coagulation models, a widely used technique is the sectional treatment of the particle size distribution. This approach is used in many first- and second-generation computer codes, where the section boundaries are selected to obey a geometric constraint. While this technique improves computational efficiency, it introduces a number of limitations, including poor representation of the initial size distribution and loss of resolution in the coagulated or final distribution. A robust and versatile computer model, SEROSA, has been developed, which permits an arbitrary number of sections with arbitrary size boundaries to simulate the temporal evolution of coagulation and deposition under multiple flow-regimes and coagulation types. The code permits a large number of parameter combinations and what-if scenarios under user control. Results are benchmarked against an analytical model as well as three coagulation models using coincident section boundaries and coagulation mechanisms. The comparison shows excellent agreement in cases where other computer models are known to perform well. The test cases also included scenarios where previously published computational coagulation models lack capabilities or exhibit numerical difficulties. Computational time varies depending on the number of sections, ageing, and coagulation types from a few seconds to minutes. The software is distributed by the Radiation Safety Information Computational Center of Oak Ridge National Laboratory as Code Package PSR 573. Copyright 2013 American Association for Aerosol Research
C1 [Geng, J.; Sajo, E.] Univ Massachusetts Lowell, Dept Phys & Appl Phys, Lowell, MA 01854 USA.
   [Park, H.] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM USA.
RP Sajo, E (reprint author), Univ Massachusetts Lowell, Dept Phys & Appl Phys, 1 Univ Ave, Lowell, MA 01854 USA.
EM erno_sajo@uml.edu
FU US Department of Defense DTRA [CA08PRO002]; US Department of Energy
   Health Physics Faculty Research Award Program [DE-AC05-76OR0003]
FX Funding for this study has been provided in part by the US Department of
   Defense DTRA, Project CA08PRO002, and the US Department of Energy Health
   Physics Faculty Research Award Program Administered by Oak Ridge
   Associated Universities under Management and Operating Contract
   DE-AC05-76OR0003.
NR 37
TC 5
Z9 5
U1 0
U2 13
PU TAYLOR & FRANCIS INC
PI PHILADELPHIA
PA 325 CHESTNUT ST, SUITE 800, PHILADELPHIA, PA 19106 USA
SN 0278-6826
J9 AEROSOL SCI TECH
JI Aerosol Sci. Technol.
PD MAY 1
PY 2013
VL 47
IS 5
BP 530
EP 542
DI 10.1080/02786826.2013.770126
PG 13
WC Engineering, Chemical; Engineering, Mechanical; Environmental Sciences;
   Meteorology & Atmospheric Sciences
SC Engineering; Environmental Sciences & Ecology; Meteorology & Atmospheric
   Sciences
GA 105MJ
UT WOS:000316074500008
ER

PT J
AU Shakya, KM
   Liu, S
   Takahama, S
   Russell, LM
   Keutsch, FN
   Galloway, MM
   Shilling, JE
   Hiranuma, N
   Song, C
   Kim, H
   Paulson, SE
   Pfaffenberger, L
   Barmet, P
   Slowik, J
   Prevot, ASH
   Dommen, J
   Baltensperger, U
AF Shakya, Kabindra M.
   Liu, Shang
   Takahama, Satoshi
   Russell, Lynn M.
   Keutsch, Frank N.
   Galloway, Melissa M.
   Shilling, John E.
   Hiranuma, Naruki
   Song, Chen
   Kim, Hwajin
   Paulson, Suzanne E.
   Pfaffenberger, Lisa
   Barmet, Peter
   Slowik, Jay
   Prevot, Andre S. H.
   Dommen, Josef
   Baltensperger, Urs
TI Similarities in STXM-NEXAFS Spectra of Atmospheric Particles and
   Secondary Organic Aerosol Generated from Glyoxal, alpha-Pinene,
   Isoprene, 1,2,4-Trimethylbenzene, and d-Limonene
SO AEROSOL SCIENCE AND TECHNOLOGY
LA English
DT Article
ID X-RAY MICROSCOPY; FUNCTIONAL-GROUPS; BIOGENIC HYDROCARBONS;
   CHEMICAL-COMPOSITION; PARTICULATE MATTER; REACTION-PRODUCTS; SULFATE
   ESTERS; BETA-PINENE; PHOTOOXIDATION; PHASE
AB The organic functional group composition of particles produced in laboratory smog chambers were characterized by scanning transmission X-ray microscopy (STXM) with near-edge X-ray absorption fine structure (NEXAFS) spectroscopy and characteristic spectral signatures for secondary organic aerosol (SOA) were identified. The main objective of this study is to compare the single particle functional group composition of SOA formed from five precursors (glyoxal, -pinene, isoprene, 1,2,4-trimethylbenzene, and d-limonene) to the composition of ambient particles from multiple field campaigns. This has implications for understanding the potential contributions of particles similar to those produced in SOA chambers to ambient compositions during those campaigns. Glyoxal uptake studies showed absorption from mainly alkyl, carbon-nitrogen (C-N), and carboxylic carbonyl groups. The SOA formed from the photooxidation of -pinene (with and without isoprene) showed stronger absorptions for alkyl and carbonyl groups than the SOA formed from glyoxal. The mass ratio of carbonyl to acid group was larger in -pinene-only experiments relative to the mixed -pinene-isoprene experiments. Of 338 single-particle spectra available from aerosol sampling at six field campaigns, 114 particles had spectral features that were considered similar to the chamber-SOA particles: MILAGRO-2006 (9 particles), VOCALS-2008 (41 particles), Whistler-2008 (22 particles), Scripps Pier-2009 (8 particles), Bakersfield-2010 (24 particles), and Whistler-2010 (10 particles). These similarities with chamber-generated SOA provide spectroscopic evidence of chemically similar SOA products from these precursors in ambient particles. Copyright 2013 American Association for Aerosol Research
C1 [Shakya, Kabindra M.; Liu, Shang; Takahama, Satoshi; Russell, Lynn M.] Univ Calif San Diego, Scripps Inst Oceanog, La Jolla, CA 92093 USA.
   [Shakya, Kabindra M.] Univ Massachusetts, Sch Publ Hlth Sci, Dept Publ Hlth, Div Environm Hlth, Amherst, MA 01003 USA.
   [Takahama, Satoshi] Ecole Polytech Fed Lausanne, Lausanne, Switzerland.
   [Keutsch, Frank N.; Galloway, Melissa M.] Univ Wisconsin Madison, Dept Chem, Madison, WI USA.
   [Galloway, Melissa M.] Univ San Diego, Dept Chem & Biochem, San Diego, CA 92110 USA.
   [Shilling, John E.; Hiranuma, Naruki; Song, Chen] Pacific NW Natl Lab, Atmospher Sci & Global Change Div, Richland, WA 99352 USA.
   [Hiranuma, Naruki] Karlsruhe Inst Technol, Inst Meteorol & Climate Res, D-76021 Karlsruhe, Germany.
   [Kim, Hwajin; Paulson, Suzanne E.] Univ Calif Los Angeles, Div Atmospher & Ocean Sci, Los Angeles, CA USA.
   [Pfaffenberger, Lisa; Barmet, Peter; Slowik, Jay; Prevot, Andre S. H.; Dommen, Josef; Baltensperger, Urs] Paul Scherrer Inst, Lab Atmospher Chem, Villigen, Switzerland.
RP Russell, LM (reprint author), Univ Calif San Diego, Scripps Inst Oceanog, 9500 Gilman Dr, La Jolla, CA 92093 USA.
EM lmrussell@ucsd.edu
RI Prevot, Andre/C-6677-2008; Slowik, Jay/F-4894-2011; Liu,
   Shang/F-9085-2011; Hiranuma, Naruki/D-3780-2014; Keutsch,
   Frank/B-2391-2012; Shilling, John/L-6998-2015
OI Prevot, Andre/0000-0002-9243-8194; Slowik, Jay/0000-0001-5682-850X; Liu,
   Shang/0000-0002-3403-8651; Hiranuma, Naruki/0000-0001-7790-4807;
   Shilling, John/0000-0002-3728-0195
FU National Science Foundation [ATM-0904203]; Office of Science, Department
   of Energy [DE-AC02-05CH11231]
FX Support for this work was provided by the grant ATM-0904203 from the
   National Science Foundation. Support for sampling at two of the smog
   chambers was provided by the European Commission FP7 project EUROCHAMP-2
   and the Pacific Northwest National Laboratory's Aerosol Climate
   Initiative. STXM-NEXAFS spectra were acquired at beamline 5.3.2.2 at the
   ALS, which is supported by the Director of the Office of Science,
   Department of Energy, under Contract No. DE-AC02-05CH11231. The authors
   acknowledge John H. Seinfeld, Jill S. Craven, and Christine L. Loza from
   California Institute of Technology, W. Richard Leaitch from Environment
   Canada, and Ashley Corrigan, Amanda Frossard, and Lars Ahlm for their
   assistance with experiments and analyses discussed here.
NR 64
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Z9 2
U1 9
U2 99
PU TAYLOR & FRANCIS INC
PI PHILADELPHIA
PA 325 CHESTNUT ST, SUITE 800, PHILADELPHIA, PA 19106 USA
SN 0278-6826
J9 AEROSOL SCI TECH
JI Aerosol Sci. Technol.
PD MAY 1
PY 2013
VL 47
IS 5
BP 543
EP 555
DI 10.1080/02786826.2013.772950
PG 13
WC Engineering, Chemical; Engineering, Mechanical; Environmental Sciences;
   Meteorology & Atmospheric Sciences
SC Engineering; Environmental Sciences & Ecology; Meteorology & Atmospheric
   Sciences
GA 105MJ
UT WOS:000316074500009
ER

PT J
AU Hewson, JC
AF Hewson, John C.
TI An extinction criterion for nonpremixed flames subject to brief periods
   of high dissipation rates
SO COMBUSTION AND FLAME
LA English
DT Article
DE Extinction; Unsteady flame; Nonpremixed flame; Scalar-dissipation rate
ID PREMIXED TURBULENT COMBUSTION; AIR DIFFUSION FLAMES; SCALAR DISSIPATION;
   LOCAL EXTINCTION; ASYMPTOTIC STRUCTURE; REYNOLDS-NUMBER; STRAIN-RATE;
   REIGNITION; UNSTEADY; MODEL
AB The existence of a critical dissipation rate, above which a steady nonpremixed flame is extinguished, is well known. Recent advances in modeling have allowed the simulation of turbulent nonpremixed flames that include local extinction as a consequence of the stochastic variation in dissipation rates. In this paper we present an extinction criterion for flames subject to unsteady dissipation rates. This criterion is expressed in terms of the critical dissipation-impulse magnitude, which depends on the time-integrated excess dissipation rate and stoichiometric factors. Limiting behaviors for large and small fluctuations of the dissipation rate above the critical value are identified. For large dissipation-rate fluctuations, the critical dissipation-impulse magnitude is independent of the details of the temporal dissipation-rate evolution. This critical dissipation-impulse magnitude is found to depend only on the steady-state characteristics of the particular fuel-oxidizer mixture present, namely the shape of the steady-state S-curve. In this way, a useful extinction criterion is developed that defines conditions for which unsteady mixing dynamics lead to extinction based on information available from steady-state flames. This criterion is found applicable for a diverse set of flames including n-heptane, diluted n-heptane, methane, partially premixed methane and CO/H-2/N-2 mixtures when dissipation-rate fluctuations are large. As the magnitude of the dissipation rate fluctuations approaches zero, the critical impulse approaches zero, which corresponds to the well-known steady extinction limit. Thus, this work extends the prediction of extinction from the steady limit to the unsteady. (C) 2013 Published by Elsevier Inc. on behalf of The Combustion Institute.
C1 [Hewson, John C.] Sandia Natl Labs, Fire & Aerosol Sci, Albuquerque, NM 87185 USA.
RP Hewson, JC (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87111 USA.
EM jchewso@sandia.gov
FU United States Department of Energy's National Nuclear Security
   Administration [DE-AC04-94AL85000]; Sandia National Laboratories'
   Advanced Simulation and Computing Physics and Engineering Models
   program; Sandia National Laboratories' Laboratory Directed Research and
   Development program
FX This work was conducted at Sandia National Laboratories, a multiprogram
   laboratory operated by Sandia Corporation, a Lockheed Martin Company,
   for the United States Department of Energy's National Nuclear Security
   Administration under Contract DE-AC04-94AL85000 and supported in part by
   Sandia National Laboratories' Advanced Simulation and Computing Physics
   and Engineering Models program and in part by Sandia National
   Laboratories' Laboratory Directed Research and Development program.
NR 34
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Z9 3
U1 2
U2 14
PU ELSEVIER SCIENCE INC
PI NEW YORK
PA 360 PARK AVE SOUTH, NEW YORK, NY 10010-1710 USA
SN 0010-2180
J9 COMBUST FLAME
JI Combust. Flame
PD MAY
PY 2013
VL 160
IS 5
BP 887
EP 897
DI 10.1016/j.combustflame.2013.01.004
PG 11
WC Thermodynamics; Energy & Fuels; Engineering, Multidisciplinary;
   Engineering, Chemical; Engineering, Mechanical
SC Thermodynamics; Energy & Fuels; Engineering
GA 109MM
UT WOS:000316372700004
ER

PT J
AU Lusk, TS
   Strain, E
   Kase, JA
AF Lusk, Tina S.
   Strain, Errol
   Kase, Julie A.
TI Comparison of six commercial DNA extraction kits for detection of
   Brucella neotomae in Mexican and Central American-style cheese and other
   milk products
SO FOOD MICROBIOLOGY
LA English
DT Article
DE Brucella; Cheese; Milk; DNA extraction; Polymerase chain reaction
ID POLYMERASE-CHAIN-REACTION; REAL-TIME PCR; LISTERIA-MONOCYTOGENES; SOFT
   CHEESE; SPP.; IDENTIFICATION; SALMONELLA; BACTERIAL; ABORTUS
AB Raw or inadequately pasteurized milk from infected animals and cheese made with such milk are a frequent vehicle for human brucellosis infection. Also, biological terrorism is a concern with certain Brucella spp. Due to matrix-associated real-time polymerase chain reaction (qPCR) inhibitors, robust sample preparations are crucial. We compared six commercial nucleic acid extraction kits using nine Mexican and Central American-style soft cheeses or creams and three liquid milk products inoculated with Brucella neotomae, a surrogate for pathogenic Brucella spp. Kits were evaluated by purity and quantity of DNA as determined by qPCR Ct values, reproducibility across cheese and milk types, and cost. At 10(7) CFU/g in four different cheeses, Qiagen statistically outperformed all other kits. When two cheese styles were inoculated at dual levels, Qiagen and High Pure kit extracted samples at 1.5 x 10(5) CFU/g produced average Ct values of 34-39, while PrepSEQ and MagMAX kit extracted samples exhibited higher or no Ct values. High Pure and Qiagen kits excelled also with liquid milk products. Considering matrices, inoculation levels, and kits evaluated, High Pure and Qiagen products produced Brucella DNA of high quality and quantity indicated by the lowest Ct values and were the least expensive. (C) 2012 Elsevier Ltd. All rights reserved.
C1 [Lusk, Tina S.] Oak Ridge Inst Sci & Educ, Oak Ridge, TN 37830 USA.
   [Strain, Errol] US FDA, Div Publ Hlth & Biostat, Off Food Def Commun & Emergency Response, College Pk, MD 20740 USA.
   [Kase, Julie A.] US FDA, Div Microbiol, Off Regulatory Sci, Ctr Food Safety & Appl Nutr, College Pk, MD 20740 USA.
RP Lusk, TS (reprint author), US FDA, Microbial Methods Dev Branch, Div Microbiol, Off Regulatory Sci,Ctr Food Safety & Appl Nutr, 5100 Paint Branch Pkwy,Rm 3E-009,HFS-711, College Pk, MD 20740 USA.
EM tina.lusk@fda.hhs.gov
FU Center for Food Safety and Applied Nutrition
FX This project was supported in part by an appointment (TSL) to the
   Research Participation Program at the Center for Food Safety and Applied
   Nutrition administered by the Oak Ridge Institute for Science and
   Education through an interagency agreement between the U.S. Department
   of Energy and the U.S. Food and Drug Administration.
NR 21
TC 7
Z9 8
U1 3
U2 66
PU ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
PI LONDON
PA 24-28 OVAL RD, LONDON NW1 7DX, ENGLAND
SN 0740-0020
J9 FOOD MICROBIOL
JI Food Microbiol.
PD MAY
PY 2013
VL 34
IS 1
BP 100
EP 105
DI 10.1016/j.fm.2012.11.007
PG 6
WC Biotechnology & Applied Microbiology; Food Science & Technology;
   Microbiology
SC Biotechnology & Applied Microbiology; Food Science & Technology;
   Microbiology
GA 111NO
UT WOS:000316528200014
PM 23498184
ER

PT J
AU Kutchko, BG
   Goodman, AL
   Rosenbaum, E
   Natesakhawat, S
   Wagner, K
AF Kutchko, Barbara G.
   Goodman, Angela L.
   Rosenbaum, Eilis
   Natesakhawat, Sittichai
   Wagner, Keith
TI Characterization of coal before and after supercritical CO2 exposure via
   feature relocation using field-emission scanning electron microscopy
SO FUEL
LA English
DT Article
DE Coal structure; Carbon sequestration; Scanning electron microscopy;
   Storage; Macrospheres
ID ARGONNE PREMIUM COALS; CARBON-DIOXIDE; BITUMINOUS COALS; SEQUESTRATION;
   ADSORPTION; ISOTHERMS; LIQUEFACTION; SOLUBILITY; REDUCTION; INJECTION
AB The solvent and swelling effects of supercritical CO2 on coal structure and porosity were examined using high-resolution field-emission scanning electron microscopy (FE-SEM) and surface area techniques to investigate any irreversible CO2 induced alterations of the micro-, meso-, and macropores. Dry, 1 in. unconfined cores of Pittsburgh and Sewickly bituminous coals were exposed to supercritical CO2 at 15.3 MPa (2200 psig) and 328 K (55 degrees C) for 104 days. Prior to CO2 exposure, coal structure and porosity - specifically macropores (>50 nm) - were imaged using FE-SEM. After CO2 exposure, the imaged features were relocated, reimaged, and analyzed for structural changes. Brunauer-Emmett-Teller (BET) surface areas were evaluated from the adsorption isotherms of N-2 at 77 K and P/P-0 = 0.1-0.3. Micropore surface areas were determined from the low-pressure adsorption isotherms of CO2 at 293 K using the Dubinin-Polanyi equation. FE-SEM analysis indicated that there were no significant changes observed in the pore areas in all coal samples after CO2 exposure. Meso- and micropore characteristics were slightly affected by supercritical CO2 exposure. Published by Elsevier Ltd.
C1 [Kutchko, Barbara G.; Goodman, Angela L.; Rosenbaum, Eilis; Natesakhawat, Sittichai] US DOE, Natl Energy Technol Lab, Pittsburgh, PA 15236 USA.
   [Natesakhawat, Sittichai] Univ Pittsburgh, Dept Chem & Petr Engn, Pittsburgh, PA 15260 USA.
   [Wagner, Keith] RJ Lee Grp Inc, Monroeville, PA 15146 USA.
RP Goodman, AL (reprint author), US DOE, Natl Energy Technol Lab, POB 10940, Pittsburgh, PA 15236 USA.
EM angela.goodman@netl.doe.gov
OI Natesakhawat, Sittichai/0000-0003-1272-1238
NR 42
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Z9 12
U1 7
U2 41
PU ELSEVIER SCI LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
SN 0016-2361
J9 FUEL
JI Fuel
PD MAY
PY 2013
VL 107
BP 777
EP 786
DI 10.1016/j.fuel.2013.02.008
PG 10
WC Energy & Fuels; Engineering, Chemical
SC Energy & Fuels; Engineering
GA 107JZ
UT WOS:000316214200084
ER

PT J
AU Zuckermann, RN
AF Zuckermann, R. N.
TI Folding Information-rich Non-natural Polymers into Protein-mimetic
   Materials
SO BIOPOLYMERS
LA English
DT Meeting Abstract
CT 23rd American Peptide Symposium
CY JUN 22-27, 2013
CL Waikoloa, HI
C1 [Zuckermann, R. N.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Mol Foundry, Berkeley, CA 94720 USA.
NR 0
TC 0
Z9 0
U1 0
U2 1
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 0006-3525
EI 1097-0282
J9 BIOPOLYMERS
JI Biopolymers
PD MAY
PY 2013
VL 100
IS 3
SI SI
BP 235
EP 235
PG 1
WC Biochemistry & Molecular Biology; Biophysics
SC Biochemistry & Molecular Biology; Biophysics
GA AI0IL
UT WOS:000336530200037
ER

PT J
AU Xu, CF
   Mehta, A
   Wright, ER
   Ser-pell, LC
   Zuo, XB
   Wall, JS
   Conticello, VP
AF Xu, Chunfu
   Mehta, Anil
   Wright, Elizabeth R.
   Ser-pell, Louise C.
   Zuo, Xiaobing
   Wall, Joseph S.
   Conticello, Vincent P.
TI Rational Design of Helical Nanotubes from Self-assembly of Coiled-coil
   Lock Washers
SO BIOPOLYMERS
LA English
DT Meeting Abstract
CT 23rd American Peptide Symposium
CY JUN 22-27, 2013
CL Waikoloa, HI
C1 [Xu, Chunfu; Mehta, Anil; Conticello, Vincent P.] Emory Univ, Dept Chem, Atlanta, GA 30322 USA.
   [Wright, Elizabeth R.] Emory Univ, RPA Integrated Electron Microscopy Core, Atlanta, GA 30322 USA.
   [Ser-pell, Louise C.] Univ Sussex, Sch Life Sci, Falmer BN1 9QG, E Sussex, England.
   [Zuo, Xiaobing] Argonne Natl Lab, Xray Sci Div, Argonne, IL 60439 USA.
   [Wall, Joseph S.] Brookhaven Natl Lab, Upton, NY 11973 USA.
NR 0
TC 0
Z9 0
U1 1
U2 2
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 0006-3525
EI 1097-0282
J9 BIOPOLYMERS
JI Biopolymers
PD MAY
PY 2013
VL 100
IS 3
SI SI
BP 292
EP 292
PG 1
WC Biochemistry & Molecular Biology; Biophysics
SC Biochemistry & Molecular Biology; Biophysics
GA AI0IL
UT WOS:000336530200249
ER

PT J
AU Mucha, A
   Vassiliou, S
   Weglarz-Tomczak, E
   Berlicki, L
   Paweiczak, M
   Nocek, B
   Mulligand, R
   Joachimiak, A
AF Mucha, A.
   Vassiliou, S.
   Weglarz-Tomczak, E.
   Berlicki, L.
   Paweiczak, M.
   Nocek, B.
   Mulligand, R.
   Joachimiak, A.
TI Inhibition of Neisseria meningitidis Alanine Aminopeptidase with
   Phosphinic Dipeptide Analogs
SO BIOPOLYMERS
LA English
DT Meeting Abstract
CT 23rd American Peptide Symposium
CY JUN 22-27, 2013
CL Waikoloa, HI
C1 [Mucha, A.; Weglarz-Tomczak, E.; Berlicki, L.] Wroclaw Univ Technol, Fac Chem, Dept Bioorgan Chem, PL-50370 Wroclaw, Poland.
   [Vassiliou, S.] Univ Athens, Dept Chem, Organ Chem Lab, Athens 15701, Greece.
   [Paweiczak, M.] Univ Opole, Inst Chem, PL-45052 Opole, Poland.
   [Nocek, B.; Mulligand, R.; Joachimiak, A.] Argonne Natl Lab, Midwest Ctr Struct Genom, Argonne, IL 60439 USA.
NR 0
TC 0
Z9 0
U1 0
U2 2
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 0006-3525
EI 1097-0282
J9 BIOPOLYMERS
JI Biopolymers
PD MAY
PY 2013
VL 100
IS 3
SI SI
BP 306
EP 306
PG 1
WC Biochemistry & Molecular Biology; Biophysics
SC Biochemistry & Molecular Biology; Biophysics
GA AI0IL
UT WOS:000336530200299
ER

PT J
AU Zhan, H
   Xiao, J
   Nie, ZM
   Li, XL
   Wang, CM
   Zhang, JG
   Liu, J
AF Zhan, Hui
   Xiao, Jie
   Nie, Zimin
   Li, Xiaolin
   Wang, Chongmin
   Zhang, Ji-Guang
   Liu, Jun
TI Nanostructured materials for rechargeable batteries: synthesis,
   fundamental understanding and limitations
SO CURRENT OPINION IN CHEMICAL ENGINEERING
LA English
DT Review
AB Nanostructured materials have emerged as very attractive electrode materials for energy storage due to their small sizes and structure/morphology-related properties. The purpose of this article is to provide a perspective to the materials community on the opportunities and limitations of nanostructured materials by highlighting examples in synthesis, fundamental studies and applications. Nanostructured silicon (Si) anodes together with other cathode and anode materials are used as examples to illustrate the different methods available for synthesis and the range of materials that can be produced to improve the storage capacity and stability. Recent progresses in using well-defined nanostructures to gain new fundamental understanding of the complex electrochemical reactions and charge-discharge processes are also discussed. Finally, the paper addresses some key problems that are yet to be solved and the need to optimize the microstructures and control the high level architectures beyond nanoscale.
C1 [Zhan, Hui; Xiao, Jie; Nie, Zimin; Li, Xiaolin; Wang, Chongmin; Zhang, Ji-Guang; Liu, Jun] Pacific NW Natl Lab, Richland, WA 99354 USA.
   [Zhan, Hui] Wuhan Univ, Dept Chem, Wuhan 430072, Peoples R China.
RP Liu, J (reprint author), Pacific NW Natl Lab, Richland, WA 99354 USA.
EM jun.liu@pnnl.gov
FU U.S. Department of Energy (DOE), Office of Basic Energy Sciences,
   Division of Materials Sciences and Engineering [KC020105-FWP12152];
   Battelle [DE-AC05-76RL01830]
FX The preparation of this manuscript is supported by the U.S. Department
   of Energy (DOE), Office of Basic Energy Sciences, Division of Materials
   Sciences and Engineering, under Award KC020105-FWP12152. PNNL is
   operated for DOE by Battelle under Contract DE-AC05-76RL01830.
NR 96
TC 0
Z9 0
U1 5
U2 11
PU ELSEVIER SCI LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
SN 2211-3398
J9 CURR OPIN CHEM ENG
JI Curr. Opin. Chem. Eng.
PD MAY
PY 2013
VL 2
IS 2
BP 151
EP 159
DI 10.1016/j.coche.2013.03.007
PG 9
WC Biotechnology & Applied Microbiology; Engineering, Chemical
SC Biotechnology & Applied Microbiology; Engineering
GA V39RW
UT WOS:000209429100003
ER

PT J
AU Ono, M
   Jaworski, M
   Kaita, R
   Skinner, CH
   Allain, JP
   Maingi, R
   Scotti, F
   Soukhanovskii, VA
AF Ono, M.
   Jaworski, M.
   Kaita, R.
   Skinner, C. H.
   Allain, J. P.
   Maingi, R.
   Scotti, F.
   Soukhanovskii, V. A.
CA NSTX-U Team
TI OVERVIEW OF INNOVATIVE PMI RESEARCH ON NSTX-U AND ASSOCIATED PMI
   FACILITES AT PPPL
SO FUSION SCIENCE AND TECHNOLOGY
LA English
DT Article; Proceedings Paper
CT Joint Conference of 9th International Conference on Open Magnetic
   Systems for Plasma Confinement (OS) and 3rd International Workshop on
   Plasma Material Interaction Facilities for Fusion Research (PMIF)
CY AUG 27-31, 2012
CL Tsukuba, JAPAN
SP Japan Soc Plasma Sci & Nucl Fus Res, Univ Tsukuba, Plasma Res Ctr
ID FUSION; DEVICES
AB Developing a reactor compatible divertor and managing the associated plasma material interaction (PMI) has been identified as a high priority research area for magnetic confinement fusion. Accordingly on NSTXU, the PMI research has received a strong emphasis. With similar to 15 MW of auxiliary heating power, NSTX-U will be able to test the PMI physics with the peak projected divertor plasma facing component (PFC) heat loads of up to 40-60 MW/m(2). To support the PMI research, a comprehensive set of PMI diagnostic tools are being implemented. The snow-flake configuration can produce exceptionally high divertor flux expansion of up to similar to 50. Combined with the radiative divertor concept, the snowflake configuration has reduced the divertor heat flux by up to an order of magnitude in NSTX. Another area of active PMI investigation is the effect of divertor lithium coating (both in solid and liquid phases). The overall NSTX lithium PFC coating results suggest exciting opportunities for future magnetic confinement research including significant electron energy confinement improvements, H-mode power threshold reduction, the control of Edge Localized Modes (ELMs), and high heat flux handling. To support the NSTX-U/PPPL PMI research, there are also a number of associated PMI facilities implemented at PPPL/Princeton University including the Liquid Lithium R&D facility, Lithium Tokamak Experiment, and Laboratories for Materials Characterization and Surface Chemistry.
   [GRAPHICS]
   .
C1 [Ono, M.; Jaworski, M.; Kaita, R.; Skinner, C. H.; Scotti, F.] Princeton Plasma Phys Lab, Princeton, NJ 08543 USA.
   [Allain, J. P.] Purdue Univ, W Lafayette, IN 47907 USA.
   [Maingi, R.] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
   [NSTX-U Team] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA.
RP Ono, M (reprint author), Princeton Plasma Phys Lab, POB 451, Princeton, NJ 08543 USA.
EM mono@pppl.gov
NR 38
TC 0
Z9 0
U1 1
U2 9
PU AMER NUCLEAR SOC
PI LA GRANGE PK
PA 555 N KENSINGTON AVE, LA GRANGE PK, IL 60526 USA
SN 1536-1055
EI 1943-7641
J9 FUSION SCI TECHNOL
JI Fusion Sci. Technol.
PD MAY
PY 2013
VL 63
IS 1T
BP 21
EP 28
PG 8
WC Nuclear Science & Technology
SC Nuclear Science & Technology
GA AD7AL
UT WOS:000333412900006
ER

PT J
AU Klepper, CC
   Caughman, JB
   Martin, EH
   Kreter, A
   Schweer, B
   Unterberg, B
AF Klepper, C. C.
   Caughman, J. B.
   Martin, E. H.
   Kreter, A.
   Schweer, B.
   Unterberg, B.
TI FEASIBILITY OF AN IN-VACUO IMPLEMENTATION OF GLOW-DISCHARGE OPTICAL
   SPECTROSCOPY AND STATUS OF ITS DEVELOPMENT FOR THE PSI-2 FACILITY
SO FUSION SCIENCE AND TECHNOLOGY
LA English
DT Article; Proceedings Paper
CT Joint Conference of 9th International Conference on Open Magnetic
   Systems for Plasma Confinement (OS) and 3rd International Workshop on
   Plasma Material Interaction Facilities for Fusion Research (PMIF)
CY AUG 27-31, 2012
CL Tsukuba, JAPAN
SP Japan Soc Plasma Sci & Nucl Fus Res, Univ Tsukuba, Plasma Res Ctr
ID LINEAR PLASMA-DEVICES
AB This paper discusses an ongoing effort to evaluate the use of Glow Discharge Optical Emission Spectroscopy (GDOES) for after-exposure, target surface characterization in a plasma-materials interactions (PMI) facility, without need to remove the sample from the facility's vacuum chamber and/or to expose the sample's surface to air. The effort includes testing of a compact, inductively-coupled plasma (ICP) source, which would eventually become part of an integrated, movable GDOES sub-chamber, including plasma source, gas-feed and pumping capability, configured to function inside the main vacuum chamber. The present, conceptual design for implementation on PSI-2 shows promise in meeting these challenges and is presented here.
C1 [Klepper, C. C.; Caughman, J. B.; Martin, E. H.] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
   [Kreter, A.; Schweer, B.; Unterberg, B.] Forschungszentrum Julich, Inst Energy & Climate Res Plasma Phys, Assoc EURATOM FZJ, Trilateral Euregio Cluster, Julich, Germany.
RP Klepper, CC (reprint author), Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
RI Caughman, John/R-4889-2016
OI Caughman, John/0000-0002-0609-1164
NR 8
TC 1
Z9 1
U1 1
U2 3
PU AMER NUCLEAR SOC
PI LA GRANGE PK
PA 555 N KENSINGTON AVE, LA GRANGE PK, IL 60526 USA
SN 1536-1055
EI 1943-7641
J9 FUSION SCI TECHNOL
JI Fusion Sci. Technol.
PD MAY
PY 2013
VL 63
IS 1T
BP 193
EP 196
PG 4
WC Nuclear Science & Technology
SC Nuclear Science & Technology
GA AD7AL
UT WOS:000333412900041
ER

PT J
AU Wang, GJ
   Dardo, T
   Convit, A
   Volkow, N
   Logan, J
   Wong, C
   Shumay, E
   Fowler, J
AF Wang, Gene-Jack
   Dardo, Tomasi
   Convit, Antonio
   Volkow, Nora
   Logan, Jean
   Wong, Christopher
   Shumay, Elena
   Fowler, Joanna
TI Peripheral insulin resistance affects brain dopaminergic signaling after
   glucose ingestion
SO JOURNAL OF NUCLEAR MEDICINE
LA English
DT Meeting Abstract
C1 [Wang, Gene-Jack] SUNY Stony Brook, Radiol, Upton, NY USA.
   [Logan, Jean; Shumay, Elena; Fowler, Joanna] Brookhaven Natl Lab, Biosci, Upton, NY 11973 USA.
   [Convit, Antonio] NYU, Psychiat, New York, NY USA.
   [Dardo, Tomasi; Wong, Christopher] NIAAA, Neuroimaging, Upton, NY USA.
   [Volkow, Nora] NIDA, Bethesda, MD 20892 USA.
NR 0
TC 1
Z9 1
U1 0
U2 1
PU SOC NUCLEAR MEDICINE INC
PI RESTON
PA 1850 SAMUEL MORSE DR, RESTON, VA 20190-5316 USA
SN 0161-5505
EI 1535-5667
J9 J NUCL MED
JI J. Nucl. Med.
PD MAY
PY 2013
VL 54
SU 2
MA 29
PG 2
WC Radiology, Nuclear Medicine & Medical Imaging
SC Radiology, Nuclear Medicine & Medical Imaging
GA V40KY
UT WOS:000209478700023
ER

PT J
AU Zhu, YK
   Mendelsberg, RJ
   Zhu, JQ
   Han, JC
   Anders, A
AF Zhu, Yuankun
   Mendelsberg, Rueben J.
   Zhu, Jiaqi
   Han, Jiecai
   Anders, Andre
TI Structural, optical, and electrical properties of indium-doped cadmium
   oxide films prepared by pulsed filtered cathodic arc deposition
SO JOURNAL OF MATERIALS SCIENCE
LA English
DT Article
ID CDO THIN-FILMS; TRANSPARENT CONDUCTING OXIDES;
   CHEMICAL-VAPOR-DEPOSITION; LASER DEPOSITION; SOLAR-CELLS; BAND;
   SEMICONDUCTORS; STRATEGIES; MOBILITY; LAYER
AB Indium-doped cadmium oxide (CdO:In) films were prepared on glass and sapphire substrates by pulsed filtered cathodic arc deposition (PFCAD). The effects of substrate temperature, oxygen pressure, and an MgO template layer on film properties were systematically studied. The MgO template layers significantly influence the microstructure and the electrical properties of CdO:In films, but show different effects on glass and sapphire substrates. Under optimized conditions on glass substrates, CdO:In films with thickness of about 125 nm showed low resistivity of 5.9 x 10(-5) Omega cm, mobility of 112 cm(2)/Vs, and transmittance over 80 % (including the glass substrate) from 500 to 1500 nm. The optical bandgap of the films was found to be in the range of 2.7 to 3.2 eV using both the Tauc relation and the derivative of transmittance. The observed widening of the optical bandgap with increasing carrier concentration can be described well only by considering bandgap renormalization effects along with the Burstein-Moss shift for a nonparabolic conduction band.
C1 [Zhu, Yuankun; Zhu, Jiaqi; Han, Jiecai] Harbin Inst Technol, Harbin 150080, Peoples R China.
   [Zhu, Yuankun; Mendelsberg, Rueben J.; Anders, Andre] Lawrence Berkeley Natl Lab, Plasma Applicat Grp, Berkeley, CA 94720 USA.
   [Mendelsberg, Rueben J.] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA.
RP Zhu, JQ (reprint author), Harbin Inst Technol, Harbin 150080, Peoples R China.
EM zhujq@hit.edu.cn
RI Anders, Andre/B-8580-2009
OI Anders, Andre/0000-0002-5313-6505
FU LDRD Program of Lawrence Berkeley National Laboratory; U.S. Department
   of Energy [DE-AC02-05CH11231]; National Natural Science Foundation of
   China [51072039, 51222205]; Ph.D. Programs Foundation of the Ministry of
   Education of China [20112302110036]
FX The authors would like to thank K. M. Yu and S.H.N. Lim for their
   contributions to this work. Research was supported by the LDRD Program
   of Lawrence Berkeley National Laboratory, by the Assistant Secretary for
   Energy Efficiency and Renewable Energy, Office of Building Technology,
   of the U.S. Department of Energy under U.S. Department of Energy
   Contract No. DE-AC02-05CH11231. Additional support was provided by the
   National Natural Science Foundation of China (Grant No. 51072039 and
   51222205), and the Ph.D. Programs Foundation of the Ministry of
   Education of China (20112302110036).
NR 43
TC 7
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U1 2
U2 36
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 0022-2461
J9 J MATER SCI
JI J. Mater. Sci.
PD MAY
PY 2013
VL 48
IS 10
BP 3789
EP 3797
DI 10.1007/s10853-013-7179-y
PG 9
WC Materials Science, Multidisciplinary
SC Materials Science
GA 098BK
UT WOS:000315518400021
ER

PT J
AU Cheng, T
   Parish, CM
   More, KL
AF Cheng, Ting
   Parish, Chad M.
   More, Karren L.
TI Synthesis of platinum single-crystal nanoparticles in water vapor
SO JOURNAL OF MATERIALS SCIENCE
LA English
DT Article
DE Platinum; Water vapor
ID HIGH-TEMPERATURE; MICROANALYSIS; NANOCRYSTALS; IMAGES
AB Platinum (Pt) nanoparticles have broad application in automobile pollution control, sensors, and fuel cells. Single-crystal platinum particles over the range of nano- to micron-meters were synthesized at the Pt/SiC interface in high pressure water vapor at 1200 A degrees C. These particles exhibited a cube-octahedral shape with predominant (111) facets. Formation of the Pt particles is likely due to water vapor-facilitated oxidation of the platinum silicide, resulting from the interaction between SiC and Pt. Well-aligned Pt single-crystal particles with sizes of tens to hundreds nanometers were obtained on the surface of arc-melted Pt2Si after exposure in flowing water vapor (90 cm/min) at 1200 A degrees C for 5 min. The potential applications of this finding are discussed.
C1 [Cheng, Ting; Parish, Chad M.; More, Karren L.] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN USA.
RP Cheng, T (reprint author), Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN USA.
EM chengt@ornl.gov
RI Parish, Chad/J-8381-2013; More, Karren/A-8097-2016
OI More, Karren/0000-0001-5223-9097
FU ORNL's Shared Research Equipment (ShaRE) User Facility; Office of Basic
   Energy Sciences, U.S. Department of Energy; UT-Battelle, LLC
   [DE-AC05-00OR22725]
FX The authors thank Dr. Brady, Michael P. and Dr. Geohegan, David B. for
   helpful comments on this manuscript, Dr. Bei, Hongbin for
   Pt<INF>2</INF>Si specimen preparation and Dr. Keiser, James R. for steam
   exposure tests. Research supported in part by ORNL's Shared Research
   Equipment (ShaRE) User Facility, which is sponsored by the Office of
   Basic Energy Sciences, U.S. Department of Energy. This manuscript has
   been authored by UT-Battelle, LLC, under Contract No. DE-AC05-00OR22725
   with the US Department of Energy. The United States Government retains
   and the publisher, by accepting the article for publication,
   acknowledges that the United States Government retains a non-exclusive,
   paid-up, irrevocable, world-wide license to publish or reproduce the
   published form of this manuscript, or allow others to do so, for United
   States Government purposes.
NR 16
TC 2
Z9 2
U1 1
U2 51
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 0022-2461
J9 J MATER SCI
JI J. Mater. Sci.
PD MAY
PY 2013
VL 48
IS 10
BP 3834
EP 3840
DI 10.1007/s10853-013-7184-1
PG 7
WC Materials Science, Multidisciplinary
SC Materials Science
GA 098BK
UT WOS:000315518400026
ER

PT J
AU Tang, DH
   Allard, LF
   Boley, A
   Smith, DJ
   Liu, JY
AF Tang, Dinghao
   Allard, Lawrence F.
   Boley, Allison
   Smith, David J.
   Liu, Jingyue
TI Structure and morphology of polar and semi-polar pyramidal surfaces
   coating wurtzite ZnO micro-wires
SO JOURNAL OF MATERIALS SCIENCE
LA English
DT Article
ID ZINC-OXIDE; NANOSTRUCTURES; NANOWIRES; NANOBELTS; METHANOL;
   NANOGENERATORS; CONVERSION; ARRAYS
AB Wurtzite ZnO nano-pyramids grown by evaporation-deposition methods have been characterized using advanced electron microscopy. The basal and pyramidal planes of the nano-pyramids were identified as (0001) polar and semi-polar surfaces, respectively. The semi-polar surfaces were further faceted into semi-polar and non-polar surfaces. Surface area calculations revealed that approximately 65 % of the total surfaces of the as-grown nanostructures consisted of polar or semi-polar surfaces.
C1 [Tang, Dinghao] Arizona State Univ, Sch Engn Matter Transport & Energy, Tempe, AZ 85287 USA.
   [Allard, Lawrence F.] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA.
   [Boley, Allison; Smith, David J.; Liu, Jingyue] Arizona State Univ, Dept Phys, Tempe, AZ 85287 USA.
RP Liu, JY (reprint author), Arizona State Univ, Dept Phys, Tempe, AZ 85287 USA.
EM jingyue.liu@asu.edu
FU University of Missouri-St. Louis; U. S. Department of Energy, Office of
   Energy Efficiency and Renewable Energy, Vehicle Technologies Program
FX Part of the synthesis work was conducted at and supported by the
   University of Missouri-St. Louis. The aberration-corrected electron
   microscopy work was performed at the Oak Ridge National Laboratory High
   Temperature Materials Laboratory, sponsored by the U. S. Department of
   Energy, Office of Energy Efficiency and Renewable Energy, Vehicle
   Technologies Program. The authors also gratefully acknowledge the use of
   facilities in the John M. Cowley Center for High-Resolution Electron
   Microscopy at Arizona State University.
NR 29
TC 5
Z9 5
U1 4
U2 51
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 0022-2461
J9 J MATER SCI
JI J. Mater. Sci.
PD MAY
PY 2013
VL 48
IS 10
BP 3857
EP 3862
DI 10.1007/s10853-013-7187-y
PG 6
WC Materials Science, Multidisciplinary
SC Materials Science
GA 098BK
UT WOS:000315518400029
ER

PT J
AU Dale, VH
   Kline, KL
AF Dale, Virginia H.
   Kline, Keith L.
TI Issues in using landscape indicators to assess land changes
SO ECOLOGICAL INDICATORS
LA English
DT Article
DE Attribution; Causal analysis; Land cover; Land use; Land management;
   Masking; Models; Uncertainty
ID BRAZILIAN AMAZON; TROPICAL FOREST; COVER CHANGE; DEFORESTATION;
   PERSPECTIVE; DYNAMICS; RONDONIA; FUTURE; BIODIVERSITY; AGRICULTURE
AB Landscape indicators, when combined with information about environmental conditions (such as habitat potential, biodiversity, carbon and nutrient cycling, and erosion) and socioeconomic forces, can provide insights about changing ecosystem services. They also provide information about opportunities for improving natural resources management. Landscape indicators rely on data regarding land cover, land management and land functionality. Challenges in using landscape indicators to assess change and effects include (1) measures of land management and attributes that are reliable, robust and consistent for all areas on the Earth do not exist, and thus land cover is more frequently utilized; (2) multiple types of land cover and management are often found within a single landscape and are constantly changing, which complicates measurement and interpretation; and (3) while causal analysis is essential for understanding and interpreting changes in indicator values, the interactions among multiple causes and effects over time make accurate attribution among many drivers of change particularly difficult. Because of the complexity, sheer number of variables, and limitations of empirical data on land changes, models are often used to illustrate and estimate values for landscape indicators, and those models have several problems. Recommendations to improve our ability to assess the effects of changes in land management include refinement of questions to be more consistent with available information and the development of data sets based on systematic measurement over time of spatially explicit land qualities such as carbon and nutrient stocks, water and soil quality, net primary productivity, habitat and biodiversity. Well-defined and consistent land-classification systems that are capable of tracking changes in these and other qualities that matter to society need to be developed and deployed. Because landscapes are so dynamic, it is crucial to develop ways for the scientific community to work together to collect data and develop tools that will enable better analysis of causes and effects and to develop robust management recommendations that will increases land's capacity to meet societal needs in a changing world. (C) 2012 Elsevier Ltd. All rights reserved.
C1 [Dale, Virginia H.; Kline, Keith L.] Oak Ridge Natl Lab, Climate Change Sci Inst, Div Environm Sci, Ctr Bioenergy Sustainabil, Oak Ridge, TN 37831 USA.
RP Dale, VH (reprint author), Oak Ridge Natl Lab, Climate Change Sci Inst, Div Environm Sci, Ctr Bioenergy Sustainabil, Oak Ridge, TN 37831 USA.
EM dalevh@ornl.gov
OI Kline, Keith/0000-0003-2294-1170
FU U.S. Department of Energy (DOE) under the Office of the Biomass Program;
   DOE [DE-AC05-00OR22725]
FX This research was supported by the U.S. Department of Energy (DOE) under
   the Office of the Biomass Program. Oak Ridge National Laboratory is
   managed by UT-Battelle, LLC, for DOE under contract DE-AC05-00OR22725.
   The assistance of Allen McBride in developing Fig. 1 and Table 1 is
   gratefully acknowledged.
NR 73
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Z9 10
U1 7
U2 178
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 1470-160X
J9 ECOL INDIC
JI Ecol. Indic.
PD MAY
PY 2013
VL 28
SI SI
BP 91
EP 99
DI 10.1016/j.ecolind.2012.10.007
PG 9
WC Biodiversity Conservation; Environmental Sciences
SC Biodiversity & Conservation; Environmental Sciences & Ecology
GA 095HK
UT WOS:000315325100010
ER

PT J
AU Xu, TT
   Close, DM
   Sayler, GS
   Ripp, S
AF Xu, Tingting
   Close, Dan M.
   Sayler, Gary S.
   Ripp, Steven
TI Genetically modified whole-cell bioreporters for environmental
   assessment
SO ECOLOGICAL INDICATORS
LA English
DT Article
DE Bioluminescence; Bioremediation; Bioreporter; Ecotoxicology;
   Fluorescence
ID LUMINESCENT BACTERIAL SENSORS; ENDOCRINE DISRUPTING CHEMICALS;
   BIOAVAILABLE HEAVY-METALS; WATER TREATMENT SYSTEM; PARIS AREA FRANCE;
   IN-VITRO BIOASSAY; ESCHERICHIA-COLI; BIOLUMINESCENT REPORTER; ESTROGENIC
   ACTIVITY; SACCHAROMYCES-CEREVISIAE
AB Living whole-cell bioreporters serve as environmental biosentinels that survey their ecosystems for harmful pollutants and chemical toxicants, and in the process act as human and other higher animal proxies to pre-alert for unfavorable, damaging, or toxic conditions. Endowed with bioluminescent, fluorescent, or colorimetric signaling elements, bioreporters can provide a fast, easily measured link to chemical contaminant presence, bioavailability, and toxicity relative to a living system. Though well tested in the confines of the laboratory, real-world applications of bioreporters are limited. In this review, we will consider bioreporter technologies that have evolved from the laboratory towards true environmental applications, and discuss their merits as well as crucial advancements that still require adoption for more widespread utilization. Although the vast majority of environmental monitoring strategies rely upon bioreporters constructed from bacteria, we will also examine environmental biosensing through the use of less conventional eukaryotic-based bioreporters, whose chemical signaling capacity facilitates a more human-relevant link to toxicity and health-related consequences. (C) 2012 Elsevier Ltd. All rights reserved.
C1 [Xu, Tingting; Sayler, Gary S.; Ripp, Steven] Univ Tennessee, Ctr Environm Biotechnol, Knoxville, TN 37996 USA.
   [Close, Dan M.; Sayler, Gary S.] Oak Ridge Natl Lab, Joint Inst Biol Sci, Oak Ridge, TN 37831 USA.
RP Ripp, S (reprint author), Univ Tennessee, Ctr Environm Biotechnol, 676 Dabney Hall, Knoxville, TN 37996 USA.
EM saripp@utk.edu
RI Close, Dan/A-4417-2012; Ripp, Steven/B-2305-2008
OI Ripp, Steven/0000-0002-6836-1764
FU National Science Foundation Division of Chemical, Bioengineering,
   Environmental, and Transport Systems [CBET-0853780]; Division of
   Biological Infrastructure [DBI-0963854]; National Institutes of Health,
   National Cancer Institute, Cancer Imaging Program [CA127745-01]; USDA
   National Institute of Food and Agriculture Biotechnology Risk Assessment
   Program [2009-39210-20230]; Army Defense University Research
   Instrumentation Program
FX Portions of this review reflecting work by the authors were supported by
   the National Science Foundation Division of Chemical, Bioengineering,
   Environmental, and Transport Systems under award number CBET-0853780,
   the Division of Biological Infrastructure under award number
   DBI-0963854, the National Institutes of Health, National Cancer
   Institute, Cancer Imaging Program under award number CA127745-01, the
   USDA National Institute of Food and Agriculture Biotechnology Risk
   Assessment Program under grant number 2009-39210-20230, and the Army
   Defense University Research Instrumentation Program.
NR 186
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U1 8
U2 143
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 1470-160X
J9 ECOL INDIC
JI Ecol. Indic.
PD MAY
PY 2013
VL 28
SI SI
BP 125
EP 141
DI 10.1016/j.ecolind.2012.01.020
PG 17
WC Biodiversity Conservation; Environmental Sciences
SC Biodiversity & Conservation; Environmental Sciences & Ecology
GA 095HK
UT WOS:000315325100014
PM 26594130
ER

PT J
AU Kyriacou, A
   Leventouri, T
   Chakoumakos, BC
   Garlea, VO
   dela Cruz, CB
   Rondinone, AJ
   Sorge, KD
AF Kyriacou, A.
   Leventouri, Th.
   Chakoumakos, B. C.
   Garlea, V. O.
   dela Cruz, C. B.
   Rondinone, A. J.
   Sorge, K. D.
TI Combined X-ray and neutron diffraction Rietveld refinement in
   iron-substituted nano-hydroxyapatite
SO JOURNAL OF MATERIALS SCIENCE
LA English
DT Article
ID POWDER DIFFRACTION; HEMATITE; BONE
AB Simultaneous Rietveld refinements of X-ray and neutron powder diffraction patterns were applied to study the effect of Fe substitution on the crystal structure properties of the Ca5-xFex(PO4)(3)OH system (0 <= x <= 0.3). From variations of the Ca(1) and Ca(2) site occupancies and modifications of interatomic distances with x, it is inferred that Fe substitutes at both crystallographic sites with a preference at the Ca(2) site. Such partiality is attributed to similar geometries of the sixfold coordinated Fe with the sevenfold coordinated Ca(2). The expected overall decrease of the lattice constants in the iron-substituted samples is followed by an increasing trend with x that is explained in terms of local lattice distortions. Hematite forms as a secondary phase starting at x = 0.1 up to 3.7 wt% for x = 0.3. Transmission electron microscopy reveals a nanosystem consisting of 15-65 nm rods and spheres, while hematite nanoparticles are distinguishable for x >= 0.1. A transition of the diamagnetic hydroxyapatite to paramagnetic Fe-hydroxyapatite was found from magnetic measurements, while the antiferromagnetic hematite develops hysteresis loops for x > 0.1.
C1 [Kyriacou, A.; Leventouri, Th.; Sorge, K. D.] Florida Atlantic Univ, Dept Phys, Boca Raton, FL 33431 USA.
   [Chakoumakos, B. C.; Garlea, V. O.; dela Cruz, C. B.] Oak Ridge Natl Lab, Quantum Condensed Matter Div, Oak Ridge, TN 37831 USA.
   [Rondinone, A. J.] Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Oak Ridge, TN 37831 USA.
RP Leventouri, T (reprint author), Florida Atlantic Univ, Dept Phys, Boca Raton, FL 33431 USA.
EM leventou@fau.edu
RI Rondinone, Adam/F-6489-2013; Garlea, Vasile/A-4994-2016; Chakoumakos,
   Bryan/A-5601-2016; dela Cruz, Clarina/C-2747-2013
OI Rondinone, Adam/0000-0003-0020-4612; Garlea, Vasile/0000-0002-5322-7271;
   Chakoumakos, Bryan/0000-0002-7870-6543; dela Cruz,
   Clarina/0000-0003-4233-2145
FU Scientific User Facilities Division, Office of Basic Energy Sciences,
   U.S. Department of Energy; FAU
FX The Research at Oak Ridge National Laboratory's High Flux Isotope
   Reactor was sponsored by the Scientific User Facilities Division, Office
   of Basic Energy Sciences, U.S. Department of Energy. Part of this
   research was conducted at the Center for Nanophase Materials Sciences,
   which is sponsored at Oak Ridge National Laboratory by the Scientific
   User Facilities Division, Office of Basic Energy Sciences, U.S.
   Department of Energy. Support from FAU with a Dissertation of the Year
   Award to the first author is gratefully acknowledged.
NR 33
TC 4
Z9 5
U1 1
U2 67
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 0022-2461
J9 J MATER SCI
JI J. Mater. Sci.
PD MAY
PY 2013
VL 48
IS 9
BP 3535
EP 3545
DI 10.1007/s10853-013-7148-5
PG 11
WC Materials Science, Multidisciplinary
SC Materials Science
GA 098BF
UT WOS:000315517800028
ER

PT J
AU Li, B
   Li, LY
   Wang, W
   Nie, ZM
   Chen, BW
   Wei, XL
   Luo, QT
   Yang, ZG
   Sprenkle, V
AF Li, Bin
   Li, Liyu
   Wang, Wei
   Nie, Zimin
   Chen, Baowei
   Wei, Xiaoliang
   Luo, Qingtao
   Yang, Zhenguo
   Sprenkle, Vincent
TI Fe/V redox flow battery electrolyte investigation and optimization
SO JOURNAL OF POWER SOURCES
LA English
DT Article
DE Redox flow battery; Temperature stability; Electrolytes; Membrane;
   Separator
AB The recently invented iron (Fe)/vanadium (V) redox flow battery (IVB) system has attracted increasing attention because of its long-term cycling stability and low-cost membrane/separator. In this paper, we describe our extensive matrix study of factors such as electrolyte composition, state of charge (SOC), and temperature that influence the stability of electrolytes in both positive and negative half-cells. During the study, an optimized electrolyte that can be operated in a temperature range from -5 degrees C to 50 degrees C without precipitation is identified. Fe/V flow cells using the optimized electrolyte and low-cost separator exhibit satisfactory cycling performance at different temperatures. Efficiencies, capacities, and energy densities of flow batteries at various temperatures are studied. (C) 2012 Elsevier B.V. All rights reserved.
C1 [Li, Bin; Wang, Wei; Nie, Zimin; Chen, Baowei; Wei, Xiaoliang; Luo, Qingtao; Sprenkle, Vincent] Pacific NW Natl Lab, Richland, WA 99352 USA.
   [Li, Liyu; Yang, Zhenguo] UniEnergy Technol LLC, Unit A, Mukilteo, WA 98275 USA.
RP Wang, W (reprint author), Pacific NW Natl Lab, POB 999, Richland, WA 99352 USA.
EM wei.wang@pnnl.gov
RI Wang, Wei/F-4196-2010
OI Wang, Wei/0000-0002-5453-4695
FU U.S. Department of Energy's (DOE's) Office of Electricity Delivery and
   Energy Reliability (OE) [57558]; DOE [DE-AC05-76RL01830]
FX The authors would like to acknowledge financial support from the U.S.
   Department of Energy's (DOE's) Office of Electricity Delivery and Energy
   Reliability (OE) (under Contract No. 57558). We also are grateful for
   beneficial discussions with Dr. Imre Gyuk of the DOE-OE Grid Storage
   Program. Pacific Northwest National Laboratory is a multi-program
   national laboratory operated by Battelle for DOE under Contract
   DE-AC05-76RL01830.
NR 13
TC 19
Z9 19
U1 1
U2 104
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0378-7753
J9 J POWER SOURCES
JI J. Power Sources
PD MAY 1
PY 2013
VL 229
BP 1
EP 5
DI 10.1016/j.jpowsour.2012.11.119
PG 5
WC Chemistry, Physical; Electrochemistry; Energy & Fuels; Materials
   Science, Multidisciplinary
SC Chemistry; Electrochemistry; Energy & Fuels; Materials Science
GA 099FE
UT WOS:000315605900001
ER

PT J
AU Mohanty, D
   Kalnaus, S
   Meisner, RA
   Rhodes, KJ
   Li, JL
   Payzant, EA
   Wood, DL
   Daniel, C
AF Mohanty, Debasish
   Kalnaus, Sergiy
   Meisner, Roberta A.
   Rhodes, Kevin J.
   Li, Jianlin
   Payzant, E. Andrew
   Wood, David L., III
   Daniel, Claus
TI Structural transformation of a lithium-rich Li1.2Co0.1Mn0.55Ni0.15O2
   cathode during high voltage cycling resolved by in situ X-ray
   diffraction
SO JOURNAL OF POWER SOURCES
LA English
DT Article
DE In situ XRD; Li-rich NMC; High-voltage cycling; Phase transformation;
   Spinel
ID ION BATTERIES; ELECTROCHEMICAL PROPERTIES; ANOMALOUS CAPACITY;
   ELECTRODES; BEHAVIOR; PHASE; LINI1/3MN1/3CO1/3O2; PRODUCTS; LIXCOO2;
   LI2MNO3
AB Lithium-rich layered oxides having compositions of Li1+yM1-yO2 (M = Co, Mn, and Ni) have become attractive cathode materials for high energy density and high voltage lithium ion batteries for electric vehicle (EV) applications. However, their utility in EVs suffers from both voltage and capacity fade. The voltage fade is related to structural transformation in these lithium-rich oxides and must be thoroughly understood. In this work, we have utilized in situ X-ray diffraction in order to monitor these structural transformations during high voltage (4.8 V) cycling of a lithium- and manganese-rich Li1.2Co0.1Mn0.55Ni0.15O2 oxide cathode, which has not been reported previously. The lattice parameters of the cathode were monitored for first cycle and compared with the subsequent cycles. Based on our results, the c-lattice parameter increases during the course of initial charging and eventually decreases upon charging beyond 4.4 V, which verifies lithium extraction occurs from transition metal layers due to activation of Li2MnO3 phase at high-voltage. The fact that the a-lattice parameter remains constant at the first cycle plateau region indicates oxygen loss from the structure during first cycle charging which is attributed to irreversible capacity obtained from first cycle. For first and subsequent cycles, the c-lattice parameter increases during discharge up to 3.5 V and below 3.5 V, the decrease in those values was observed. After subsequent cycling, (440) cubic spinel reflections were observed during low voltage discharge process, which reveals a layer to spinel-like phase transformation in the lattice and is thought to be the reason for the observed voltage fade. A significant decrease in monoclinic phase was observed after subsequent cycles and is believed to contribute to the structural instability and capacity fade after repeated cycling. Published by Elsevier B.V.
C1 [Mohanty, Debasish; Kalnaus, Sergiy; Meisner, Roberta A.; Li, Jianlin; Wood, David L., III; Daniel, Claus] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA.
   [Rhodes, Kevin J.] Ford Motor Co, Ford Res & Innovat Ctr, Dearborn, MI 48121 USA.
   [Payzant, E. Andrew] Oak Ridge Natl Lab, Chem & Engn Mat Div, Oak Ridge, TN 37831 USA.
   [Daniel, Claus] Oak Ridge Natl Lab, Energy & Transportat Sci Div, Oak Ridge, TN 37831 USA.
   [Daniel, Claus] Univ Tennessee, Bredesen Ctr Interdisciplinary Res & Grad Educ, Knoxville, TN 37996 USA.
RP Mohanty, D (reprint author), Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA.
EM mohantyd@ornl.gov; Kalnauss@ornl.gov
RI Payzant, Edward/B-5449-2009; Mohanty, Debasish/B-6207-2012; Daniel,
   Claus/A-2060-2008; Li, Jianlin/D-3476-2011
OI Payzant, Edward/0000-0002-3447-2060; Mohanty,
   Debasish/0000-0003-1141-0657; Daniel, Claus/0000-0002-0571-6054; Li,
   Jianlin/0000-0002-8710-9847
FU DOE Vehicle Technologies Program (VTP); Applied Battery Research (ABR)
   for Transportation Program; U.S. Department of Energy
   [DE-AC05-00OR22725]; Vehicle Technologies Applied Battery Research
   Program (Program Manager: Peter Faguy) of the Office of Energy
   Efficiency and Renewable Energy
FX The electrodes in this study were produced at the U.S. Department of
   Energy's (DOE) Cell Fabrication Facility, Argonne National Laboratory
   (ANL). The Cell Fabrication Facility is fully supported by the DOE
   Vehicle Technologies Program (VTP) within the core funding of the
   Applied Battery Research (ABR) for Transportation Program. This research
   at Oak Ridge National Laboratory, managed by UT Battelle, LLC, for the
   U.S. Department of Energy under contract DE-AC05-00OR22725, was
   sponsored by the Vehicle Technologies Applied Battery Research Program
   (Program Manager: Peter Faguy) of the Office of Energy Efficiency and
   Renewable Energy. The TEM work was performed at Oak Ridge National
   Laboratory thru ShaRE user facility. Authors thank to Dr. Daniel Abraham
   at ANL for useful discussion.
NR 43
TC 155
Z9 158
U1 53
U2 583
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0378-7753
J9 J POWER SOURCES
JI J. Power Sources
PD MAY 1
PY 2013
VL 229
BP 239
EP 248
DI 10.1016/j.jpowsour.2012.11.144
PG 10
WC Chemistry, Physical; Electrochemistry; Energy & Fuels; Materials
   Science, Multidisciplinary
SC Chemistry; Electrochemistry; Energy & Fuels; Materials Science
GA 099FE
UT WOS:000315605900035
ER

PT J
AU Storlie, CB
   Reich, BJ
   Helton, JC
   Swiler, LP
   Sallaberry, CJ
AF Storlie, Curtis B.
   Reich, Brian J.
   Helton, Jon C.
   Swiler, Laura P.
   Sallaberry, Cedric J.
TI Analysis of computationally demanding models with continuous and
   categorical inputs
SO RELIABILITY ENGINEERING & SYSTEM SAFETY
LA English
DT Article
DE Categorical inputs; Meta-model; Surrogate model; Emulator;
   Non-parametric regression; Gaussian process; Sensitivity analysis;
   Uncertainty analysis
ID GAUSSIAN PROCESS MODELS; BAYESIAN VARIABLE SELECTION; PREDICTOR
   SMOOTHING METHODS; 1996 PERFORMANCE ASSESSMENT; SAMPLING-BASED METHODS;
   ISOLATION PILOT-PLANT; SENSITIVITY-ANALYSIS; COMPUTER EXPERIMENTS;
   UNCERTAINTY; OUTPUT
AB The analysis of many physical and engineering problems involves running complex computational models (e.g., simulation models and computer codes). With problems of this type, it is important to understand the relationships between the input (whose values are often imprecisely known) and the output variables, and to characterize the uncertainty in the output. Often, some of the input variables are categorical in nature (e.g., pointer variables to alternative models or different types of material, etc.). A computational model that sufficiently represents reality is often very costly in terms of run time. When the models are computationally demanding, meta-model approaches to their analysis have been shown to be very useful. However, the most popular meta-models for computational computer models do not explicitly allow for categorical input variables. In this case, categorical inputs are simply ordered in some way and treated as continuous variables in the estimation of a meta-model. In many cases, this can lead to undesirable and misleading results. In this paper, two meta-models based on functional ANOVA decomposition are presented that explicitly allow for an appropriate treatment of categorical inputs. The effectiveness of the presented meta-models in the analysis of models with continuous and categorical inputs is illustrated with several test cases and also with results from a real analysis. (C) 2012 Elsevier Ltd. All rights reserved.
C1 [Storlie, Curtis B.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
   [Reich, Brian J.] N Carolina State Univ, Raleigh, NC 27695 USA.
   [Helton, Jon C.] Arizona State Univ, Tempe, AZ USA.
   [Swiler, Laura P.; Sallaberry, Cedric J.] Sandia Natl Labs, Albuquerque, NM 87185 USA.
RP Storlie, CB (reprint author), Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
EM storlie@lanl.gov
NR 61
TC 15
Z9 15
U1 2
U2 26
PU ELSEVIER SCI LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
SN 0951-8320
J9 RELIAB ENG SYST SAFE
JI Reliab. Eng. Syst. Saf.
PD MAY
PY 2013
VL 113
BP 30
EP 41
DI 10.1016/j.ress.2012.11.018
PG 12
WC Engineering, Industrial; Operations Research & Management Science
SC Engineering; Operations Research & Management Science
GA 094GQ
UT WOS:000315251400004
ER

PT J
AU Xu, ZX
   Li, M
   Wang, F
   Liang, ZX
AF Xu, Zhuxian
   Li, Ming
   Wang, Fei (Fred)
   Liang, Zhenxian
TI Investigation of Si IGBT Operation at 200 degrees C for Traction
   Applications
SO IEEE TRANSACTIONS ON POWER ELECTRONICS
LA English
DT Article
DE High-temperature characteristics; safe operating area; traction
   application; trench-gate field-stop silicon insulated gate bipolar
   transistor (IGBT)
ID SHORT-CIRCUIT; TEMPERATURE; MOSFETS
AB In order to satisfy the high-density requirement and harsh thermal conditions while reducing cost in future electric and hybrid electric vehicles (HEV), a systematic study of a 1200-V trench-gate field-stop Si insulated gate bipolar transistor (IGBT) operating up to 200 degrees C is performed to determine its feasibility, issues, and application guideline. The device forward conduction characteristics, leakage current, and switching performance are evaluated at various temperatures. Based on the device characterization, the impact of the increased junction temperature on a traction drive converter loss and thermal management is analyzed. It is shown that by extending the device junction temperature to 200 degrees C, the additional 65 degrees C coolant loop can be eliminated without compromising power density and thermal management design. Furthermore, the possible failure mechanisms including latching, short circuit fault, and avalanche capability are tested at elevated temperatures. The criteria considering thermal stability, thermal management, short circuit capability, and avalanche capability are given at 200 degrees C to ensure the safe and reliable operation of Si IGBTs.
C1 [Xu, Zhuxian; Wang, Fei (Fred)] Univ Tennessee, Dept Elect Engn & Comp Sci, Knoxville, TN 37916 USA.
   [Li, Ming] Magna E Car Syst, Troy, MI 48084 USA.
   [Liang, Zhenxian] Oak Ridge Natl Lab, Oak Ridge, TN 37830 USA.
RP Xu, ZX (reprint author), Univ Tennessee, Dept Elect Engn & Comp Sci, Knoxville, TN 37916 USA.
EM zxu11@utk.edu; mingli.xjtu@gmail.com; fred.wang@utk.edu; liangz@ornl.gov
OI Liang, Zhenxian/0000-0002-2811-0944
FU Department of Engineering (DOE) Vehicles Technologies Program through
   Oak Ridge National Laboratory (ORNL); DOE under NSF [EEC-1041877];
   CURENT Industry Partnership Program
FX The work was supported by the Department of Engineering (DOE) Vehicles
   Technologies Program through Oak Ridge National Laboratory (ORNL), and
   Engineering Research Center Shared Facilities used were supported by the
   Engineering Research Center Program of the National Science Foundation
   (NSF) and DOE under NSF Award Number EEC-1041877 and the CURENT Industry
   Partnership Program. Recommended for publication by Associate Editor
   H.-P. Nee.
NR 24
TC 23
Z9 25
U1 1
U2 30
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 0885-8993
EI 1941-0107
J9 IEEE T POWER ELECTR
JI IEEE Trans. Power Electron.
PD MAY
PY 2013
VL 28
IS 5
BP 2604
EP 2615
DI 10.1109/TPEL.2012.2217398
PG 12
WC Engineering, Electrical & Electronic
SC Engineering
GA 086QA
UT WOS:000314699700046
ER

PT J
AU Plischke, E
   Borgonovo, E
   Smith, CL
AF Plischke, Elmar
   Borgonovo, Emanuele
   Smith, Curtis L.
TI Global sensitivity measures from given data
SO EUROPEAN JOURNAL OF OPERATIONAL RESEARCH
LA English
DT Article
DE Uncertainty analysis; Global sensitivity analysis; Simulation
ID UNCERTAINTY IMPORTANCE MEASURE; SIMULATION EXPERIMENTS; SEQUENTIAL
   BIFURCATION; ENGINEERING SYSTEMS; SAFETY ASSESSMENT; COMPUTER-MODELS;
   WASTE-DISPOSAL; SAMPLING PLANS; SPECIAL-ISSUE; INDEXES
AB Simulation models support managers in the solution of complex problems. International agencies recommend uncertainty and global sensitivity methods as best practice in the audit, validation and application of scientific codes. However, numerical complexity, especially in the presence of a high number of factors, induces analysts to employ less informative but numerically cheaper methods. This work introduces a design for estimating global sensitivity indices from given data (including simulation input-output data), at the minimum computational cost. We address the problem starting with a statistic based on the L-1-norm. A formal definition of the estimators is provided and corresponding consistency theorems are proved. The determination of confidence intervals through a bias-reducing bootstrap estimator is investigated. The strategy is applied in the identification of the key drivers of uncertainty for the complex computer code developed at the National Aeronautics and Space Administration (NASA) assessing the risk of lunar space missions. We also introduce a symmetry result that enables the estimation of global sensitivity measures to datasets produced outside a conventional input-output functional framework. (C) 2012 Elsevier B.V. All rights reserved.
C1 [Plischke, Elmar] Tech Univ Clausthal, Inst Disposal Res, D-38678 Clausthal Zellerfeld, Germany.
   [Borgonovo, Emanuele] Bocconi Univ, Dept Decis Sci, I-20136 Milan, Italy.
   [Smith, Curtis L.] Idaho Natl Lab, Idaho Falls, ID 83415 USA.
RP Plischke, E (reprint author), Tech Univ Clausthal, Inst Disposal Res, D-38678 Clausthal Zellerfeld, Germany.
EM elmar.plischke@tu-clausthal.de; emanuele.borgonovo@unibocconi.it;
   Curtis.Smith@inl.gov
FU ELEUSI Research Center of Bocconi University
FX The authors thank the anonymous referees for very perceptive suggestions
   which have greatly contributed in improving the manuscript. They also
   wish to thank the Editor for the timely and careful handling of the
   paper. Financial support from the ELEUSI Research Center of Bocconi
   University is gratefully acknowledged by E. Borgonovo.
NR 96
TC 58
Z9 60
U1 4
U2 64
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0377-2217
EI 1872-6860
J9 EUR J OPER RES
JI Eur. J. Oper. Res.
PD MAY 1
PY 2013
VL 226
IS 3
BP 536
EP 550
DI 10.1016/j.ejor.2012.11.047
PG 15
WC Management; Operations Research & Management Science
SC Business & Economics; Operations Research & Management Science
GA 084SR
UT WOS:000314559900016
ER

PT J
AU Filho, F
   Maia, HZ
   Mateus, THA
   Ozpineci, B
   Tolbert, LM
   Pinto, JOP
AF Filho, Faete
   Maia, Helder Zandonadi
   Mateus, Tiago H. A.
   Ozpineci, Burak
   Tolbert, Leon M.
   Pinto, Joao O. P.
TI Adaptive Selective Harmonic Minimization Based on ANNs for Cascade
   Multilevel Inverters With Varying DC Sources
SO IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
LA English
DT Article
DE ANN; cascade inverter; multilevel inverter; neural network; real time;
   selective harmonic elimination; SHE
ID NEURAL-NETWORKS; ELIMINATION; CONVERTERS; MOTOR
AB A new approach for modulation of an 11-level cascade multilevel inverter using selective harmonic elimination is presented in this paper. The dc sources feeding the multilevel inverter are considered to be varying in time, and the switching angles are adapted to the dc source variation. This method uses genetic algorithms to obtain switching angles offline for different dc source values. Then, artificial neural networks are used to determine the switching angles that correspond to the real-time values of the dc sources for each phase. This implies that each one of the dc sources of this topology can have different values at any time, but the output fundamental voltage will stay constant and the harmonic content will still meet the specifications. The modulating switching angles are updated at each cycle of the output fundamental voltage. This paper gives details on the method in addition to simulation and experimental results.
C1 [Filho, Faete] Eaton Corp, Asheville, NC 28704 USA.
   [Maia, Helder Zandonadi; Pinto, Joao O. P.] Univ Fed Mato Grosso do Sul, Dept Elect Engn, BR-79070900 Campo Grande, Brazil.
   [Mateus, Tiago H. A.] Fed Inst Sao Paulo, BR-04023 Sao Paulo, Brazil.
   [Ozpineci, Burak; Tolbert, Leon M.] Oak Ridge Natl Lab, Power Elect & Elect Power Syst Res Ctr, Knoxville, TN 37932 USA.
   [Tolbert, Leon M.] Univ Tennessee, Dept Elect Engn & Comp Sci, Knoxville, TN 37916 USA.
RP Filho, F (reprint author), Eaton Corp, Asheville, NC 28704 USA.
EM ffilho@utk.edu; helderzmaia@gmail.com; tiagoee@gmail.com;
   ozpinecib@ornl.gov; tolbert@utk.edu; jpinto@nin.ufms.br
OI Ozpineci, Burak/0000-0002-1672-3348; Tolbert, Leon/0000-0002-7285-609X
NR 31
TC 42
Z9 44
U1 0
U2 15
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 0278-0046
J9 IEEE T IND ELECTRON
JI IEEE Trans. Ind. Electron.
PD MAY
PY 2013
VL 60
IS 5
BP 1955
EP 1962
DI 10.1109/TIE.2012.2224072
PG 8
WC Automation & Control Systems; Engineering, Electrical & Electronic;
   Instruments & Instrumentation
SC Automation & Control Systems; Engineering; Instruments & Instrumentation
GA 082AZ
UT WOS:000314365400024
ER

PT J
AU Skurikhin, AN
   Garrity, SR
   McDowell, NG
   Cai, DMM
AF Skurikhin, Alexei N.
   Garrity, Steven R.
   McDowell, Nate G.
   Cai, Dongming M.
TI Automated tree crown detection and size estimation using multi-scale
   analysis of high-resolution satellite imagery
SO REMOTE SENSING LETTERS
LA English
DT Article
ID SPATIAL WAVELET ANALYSIS; WINDOW SIZE; FOREST; DELINEATION; MORTALITY;
   SCALE; AREA; SEGMENTATION; LIDAR; RECOGNITION
AB We tested an automated multi-scale approach for detecting individual trees and estimating tree crown geometry using high spatial resolution satellite imagery. Individual tree crowns are identified as local extrema points in the Laplacian-of-Gaussian scale-space pyramid that is constructed based on linear scale-space theory. The approach simultaneously detects tree crown centres and estimates tree crown sizes (radiuses). We evaluated our method using two 0.6-m resolution QuickBird images of a forest site that underwent a large shift in tree density between image captures due to drought-associated mortality. The automated multi-scale approach produced tree count estimates with an accuracy of 54% and 73% corresponding to the dense and sparse forests, respectively. Estimated crown diameters were linearly correlated with field-measured crown diameters (r = 0.730.86). Tree count accuracies and size estimates were comparable with alternative methods. Future use of the presented approach is merited based on the results of our study, but requires further investigation in a broader range of forest types.
C1 [Skurikhin, Alexei N.; Garrity, Steven R.; Cai, Dongming M.] Los Alamos Natl Lab, Intelligence & Space Res Div, Los Alamos, NM 87545 USA.
   [McDowell, Nate G.] Los Alamos Natl Lab, Div Earth & Environm Sci, Los Alamos, NM 87545 USA.
RP Skurikhin, AN (reprint author), Los Alamos Natl Lab, Intelligence & Space Res Div, POB 1663, Los Alamos, NM 87545 USA.
EM alexei@lanl.gov
OI Skurikhin, Alexei/0000-0001-5606-4933
FU US Department of Energy through LANL LDRD DR research grant
FX This study was supported by the US Department of Energy through LANL
   LDRD DR research grant. The authors thank Dave Breshears and Clif Meyer
   for collecting field data. Two anonymous reviewers provided helpful
   comments that improved the manuscript.
NR 43
TC 11
Z9 13
U1 1
U2 57
PU TAYLOR & FRANCIS LTD
PI ABINGDON
PA 2-4 PARK SQUARE, MILTON PARK, ABINGDON OR14 4RN, OXON, ENGLAND
SN 2150-704X
EI 2150-7058
J9 REMOTE SENS LETT
JI Remote Sens. Lett.
PD MAY 1
PY 2013
VL 4
IS 5
BP 465
EP 474
DI 10.1080/2150704X.2012.749361
PG 10
WC Remote Sensing; Imaging Science & Photographic Technology
SC Remote Sensing; Imaging Science & Photographic Technology
GA 081UJ
UT WOS:000314347600006
ER

PT J
AU Qiao, RM
   Chin, T
   Harris, SJ
   Yan, SS
   Yang, WL
AF Qiao, Ruimin
   Chin, Timothy
   Harris, Stephen J.
   Yan, Shishen
   Yang, Wanli
TI Spectroscopic fingerprints of valence and spin states in manganese
   oxides and fluorides
SO CURRENT APPLIED PHYSICS
LA English
DT Article
DE Soft X-ray spectroscopy; Manganese compounds; Manganese valence; Spin
   states; Lithium battery
ID X-RAY-ABSORPTION; TRANSITION-METAL COMPOUNDS; ELECTRONIC-STRUCTURE;
   LITHIUM BATTERIES; CATHODE MATERIALS; OXIDATION; SYSTEM; FIELD
AB We performed a systematic study of soft X-ray absorption spectroscopy in various manganese oxides and fluorides. Both Mn L-edges and ligand (O and F) K-edges are presented and compared with each other. Despite the distinct crystal structure and covalent/ionic nature in different systems, the Mn-L spectra fingerprint the Mn valence and spin states through spectral lineshape and energy position consistently and evidently. The clear O- and F-K pre-edge features in our high resolution spectra enable a quantitative definition of the molecular orbital diagram with different Mn valence. In addition, while the binding energy difference of the O-1s core electrons leads to a small shift of the O-K leading edges between trivalent and quadrivalent manganese oxides, a significant edge shift, with an order of magnitude larger in energy, was found between divalent and trivalent compounds, which is attributed to the spin exchange stabilization of half-filled 3d system. This shift is much enhanced in the ionic fluoride system. This work provides the spectroscopic foundation for further studies of complicated Mn compounds. (C) 2012 Elsevier B.V. All rights reserved.
C1 [Qiao, Ruimin; Harris, Stephen J.; Yang, Wanli] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Adv Light Source, Berkeley, CA 94720 USA.
   [Qiao, Ruimin; Yan, Shishen] Shandong Univ, Sch Phys, Jinan 250100, Peoples R China.
   [Chin, Timothy] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Environm Energy Technol Div, Berkeley, CA 94720 USA.
RP Yang, WL (reprint author), Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Adv Light Source, 1 Cyclotron Rd,MS 6R2100, Berkeley, CA 94720 USA.
EM shishenyan@sdu.edu.cn; wlyang@lbl.gov
RI Qiao, Ruimin/E-9023-2013; Yang, Wanli/D-7183-2011
OI Yang, Wanli/0000-0003-0666-8063
FU LDRD program at LBNL; National Science Foundation [51125004, 10974120];
   U.S. Department of Energy [DE-AC02-05CH11231]
FX This work is partially supported by the LDRD program at the LBNL. Works
   in China are supported by National Science Foundation No. 51125004 and
   No. 10974120. The Advanced Light Source at Lawrence Berkeley National
   Laboratory was supported by the U.S. Department of Energy under Contract
   No. DE-AC02-05CH11231.
NR 28
TC 33
Z9 33
U1 5
U2 96
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 1567-1739
J9 CURR APPL PHYS
JI Curr. Appl. Phys.
PD MAY
PY 2013
VL 13
IS 3
BP 544
EP 548
DI 10.1016/j.cap.2012.09.017
PG 5
WC Materials Science, Multidisciplinary; Physics, Applied
SC Materials Science; Physics
GA 061KI
UT WOS:000312846500019
ER

PT J
AU Mitter, B
   Petric, A
   Shin, MW
   Chain, PSG
   Hauberg-Lotte, L
   Reinhold-Hurek, B
   Nowak, J
   Sessitsch, A
AF Mitter, Birgit
   Petric, Alexandra
   Shin, Maria W.
   Chain, Patrick S. G.
   Hauberg-Lotte, Lena
   Reinhold-Hurek, Barbara
   Nowak, Jerzy
   Sessitsch, Angela
TI Comparative genome analysis of Burkholderia phytofirmans PsJN reveals a
   wide spectrum of endophytic lifestyles based on interaction strategies
   with host plants
SO FRONTIERS IN PLANT SCIENCE
LA English
DT Article
DE Burkholderia phytofirmans PsJN; endophyte; plant-microbe interaction;
   comparative genomics; PGPR
ID SP STRAIN BH72; GLUTATHIONE S-TRANSFERASES; VITIS-VINIFERA L.; BACTERIAL
   ENDOPHYTES; ROOT COLONIZATION; SECRETION SYSTEM; RALSTONIA-SOLANACEARUM;
   MICROBIAL COMMUNITIES; ARABIDOPSIS-THALIANA; TWITCHING MOTILITY
AB Burkholdena phytohanans PsJN is a naturally occurring plant-associated bacterial endophyte that effectively colonizes a wide range of plants and stimulates their growth and vitality. Here we analyze whole genomes, of PsJN and of eight other endophytic bacteria. This study illustrates that a wide spectrum of endophytio life styles exists. Although we postulate the existence of typical endophytic traits, no unique gene cluster could be exclusively linked to the endophytic lifestyle. Furthermore, our study revealed a high genetic diversity among bacterial endophytes as reflected in their genotypic and phenotypic features. B. phytofirrnans PsJN is in many aspects outstanding among the selected endophytes. It has the biggest genome consisting of two chromosomes and one plasmid, well-equipped with genes for the degradation of complex organic compounds and detoxification, e.g., 24 glutathione-S-transferase (GST) genes. Furthermore, strain PsJN has a high number of cell surface signaling and secretion systems and harbors the 3-OH-PAME quorum sensing system that coordinates the switch of free-living to the symbiotic lifestyle in the plant-pathogen B. solanacearum. The ability of B. phytofirmans PsJN to successfully colonize such a wide variety of plant species might be based on its large genome harboring a broad range of physiological functions.
C1 [Mitter, Birgit; Petric, Alexandra; Sessitsch, Angela] Austrian Inst Technol Gmbh, Dept Hlth & Environm, Bioresources Unit, A-3430 Tulln, Austria.
   [Shin, Maria W.; Chain, Patrick S. G.] Joint Genome Inst, Dept Energy, Walnut Creek, CA USA.
   [Hauberg-Lotte, Lena; Reinhold-Hurek, Barbara] Univ Bremen, D-28359 Bremen, Germany.
   [Nowak, Jerzy] Virginia Polytech Inst & State Univ, Dept Agr & Life Sci, Blacksburg, VA 24061 USA.
RP Mitter, B (reprint author), Austrian Inst Technol Gmbh, Bioresources Unit, Konrad Lorenz Str 24, A-3430 Tulln, Austria.
EM birgit.mitter@ait.ac.at
OI Sessitsch, Angela/0000-0003-0137-930X
FU EWE (National Science Foundation) [P22867-B16, P21261-1303]; US DOE's
   Office of Science, Biological, and Environmental Research Program
   [DE-AC02-05CH11231]
FX We thank Jim Tiedje and Alban Ramette for encouragement and the
   initiative to sequence the genome of strain PsJN. This work was
   supported by grants provided by the EWE (National Science Foundation,
   grant no P22867-B16 and P21261-1303). The sequencing for the project was
   provided through the US Department of Energy (DOE) Sequencing Program
   (http:// www.jgi.doe.gov/CSP/index.html). This work was performed at
   Lawrence Berkeley National Laboratory, Lawrence Livermore National
   Laboratory, and Los Alamos National Laboratory, under the auspices of
   the US DOE's Office of Science, Biological, and Environmental Research
   Program under contract no. DE-AC02-05CH11231.
NR 109
TC 45
Z9 45
U1 2
U2 34
PU FRONTIERS RESEARCH FOUNDATION
PI LAUSANNE
PA PO BOX 110, LAUSANNE, 1015, SWITZERLAND
SN 1664-462X
J9 FRONT PLANT SCI
JI Front. Plant Sci.
PD APR 30
PY 2013
VL 4
AR 120
DI 10.3389/fpls.2013.00120
PG 15
WC Plant Sciences
SC Plant Sciences
GA 291LV
UT WOS:000329831100001
PM 23641251
ER

PT J
AU Mello, A
   Ding, GC
   Piceno, YM
   Napoli, C
   Tom, LM
   DeSantis, TZ
   Andersen, GL
   Smalla, K
   Bonfante, P
AF Mello, Antonietta
   Ding, Guo-Chun
   Piceno, Yvette M.
   Napoli, Chiara
   Tom, Lauren M.
   DeSantis, Todd Z.
   Andersen, Gary L.
   Smalla, Kornelia
   Bonfante, Paola
TI Truffle Brules Have an Impact on the Diversity of Soil Bacterial
   Communities
SO PLOS ONE
LA English
DT Article
ID GRADIENT GEL-ELECTROPHORESIS; MYCORRHIZA HELPER BACTERIA; TUBER-BORCHII
   VITTAD; BLACK TRUFFLE; MICROBIAL COMMUNITIES; ARABIDOPSIS-THALIANA;
   RHIZOSPHERE; DNA; MELANOSPORUM; MAGNATUM
AB Background: The development of Tuber melanosporum mycorrhizal symbiosis is associated with the production of an area devoid of vegetation (commonly referred to by the French word 'brule') around the symbiotic plants and where the fruiting bodies of T. melanosporum are usually collected. The extent of the ecological impact of such an area is still being discovered. While the relationship between T. melanosporum and the other fungi present in the brule has been assessed, no data are available on the relationship between this fungus and the bacteria inhabiting the brule.
   Methodology/Principal Findings: We used DGGE and DNA microarrays of 16S rRNA gene fragments to compare the bacterial and archaeal communities inside and outside of truffle brules. Soil samples were collected in 2008 from four productive T. melanosporum/Quercus pubescens truffle-grounds located in Cahors, France, showing characteristic truffle brule. All the samples were analyzed by DGGE and one truffle-ground was analyzed also using phylogenetic microarrays. DGGE profiles showed differences in the bacterial community composition, and the microarrays revealed a few differences in relative richness between the brule interior and exterior zones, as well as differences in the relative abundance of several taxa.
   Conclusions/Significance: The different signal intensities we have measured for members of bacteria and archaea inside versus outside the brule are the first demonstration, to our knowledge, that not only fungal communities, but also other microorganisms are affected by T. melanosporum. Firmicutes (e.g., Bacillus), several genera of Actinobacteria, and a few Cyanobacteria had greater representation inside the brule compared with outside, whereas Pseudomonas and several genera within the class Flavobacteriaceae had higher relative abundances outside the brule. The findings from this study may contribute to future searches for microbial bio-indicators of brules.
C1 [Mello, Antonietta] CNR, Turin UOS, Inst Plant Protect, I-00185 Rome, Italy.
   [Ding, Guo-Chun; Smalla, Kornelia] Julius Kuhn Inst, Braunschweig, Germany.
   [Piceno, Yvette M.; Tom, Lauren M.; DeSantis, Todd Z.; Andersen, Gary L.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
   [Napoli, Chiara; Bonfante, Paola] Dept Life Sci & Syst Biol, Turin, Italy.
   [DeSantis, Todd Z.] Second Genome Inc, San Bruno, CA USA.
RP Mello, A (reprint author), CNR, Turin UOS, Inst Plant Protect, I-00185 Rome, Italy.
EM a.mello@ipp.cnr.it
RI ding, guo-chun/A-6821-2012; Mello, Antonietta/B-9101-2015; Tom,
   Lauren/E-9739-2015; Smalla, Kornelia/H-4002-2011; Andersen,
   Gary/G-2792-2015; Piceno, Yvette/I-6738-2016
OI ding, guo-chun/0000-0001-6702-3782; Mello,
   Antonietta/0000-0002-6311-377X; Bonfante, Paola/0000-0003-3576-8530;
   Andersen, Gary/0000-0002-1618-9827; Piceno, Yvette/0000-0002-7915-4699
FU Regione Piemonte for the project "Carta del suolo del Tuber
   melanosporum''
FX The source of funding is Regione Piemonte for the project "Carta del
   suolo del Tuber melanosporum.'' The funders had no role in study design,
   data collection and analysis, decision to publish, or preparation of the
   manuscript.
NR 51
TC 8
Z9 8
U1 4
U2 42
PU PUBLIC LIBRARY SCIENCE
PI SAN FRANCISCO
PA 1160 BATTERY STREET, STE 100, SAN FRANCISCO, CA 94111 USA
SN 1932-6203
J9 PLOS ONE
JI PLoS One
PD APR 30
PY 2013
VL 8
IS 4
AR UNSP e61945
DI 10.1371/journal.pone.0061945
PG 10
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA 146GG
UT WOS:000319077300020
PM 23667413
ER

PT J
AU Ju, L
   Zhang, GL
   Zhang, C
   Sun, L
   Jiang, Y
   Yan, CL
   Duerksen-Hughes, PJ
   Zhang, X
   Zhu, XQ
   Chen, FF
   Yang, J
AF Ju, Li
   Zhang, Guanglin
   Zhang, Chen
   Sun, Li
   Jiang, Ying
   Yan, Chunlan
   Duerksen-Hughes, Penelope J.
   Zhang, Xing
   Zhu, Xinqiang
   Chen, Fanqing Frank
   Yang, Jun
TI Quantum dot-related genotoxicity perturbation can be attenuated by PEG
   encapsulation
SO MUTATION RESEARCH-GENETIC TOXICOLOGY AND ENVIRONMENTAL MUTAGENESIS
LA English
DT Article
DE Quantum dots; PEG; Genotoxicity; Comet assay; gamma H2AX; Reactive
   oxygen species
ID GAMMA-H2AX FOCI FORMATION; VEIN ENDOTHELIAL-CELLS; DNA-DAMAGE; OXIDATIVE
   STRESS; CARBON NANOTUBES; HISTONE H2AX; APOPTOSIS; CYTOTOXICITY;
   NANOPARTICLES; ACTIVATION
AB Nanomaterial-biosystem interaction is emerging as a major concern hindering wide adoption of nanomaterials. Using quantum dots (Qdots) of different sizes (Qdot-440 nm and Qdot-680 nm) as a model system, we studied the effects of polyethylene glycol (PEG) thin-layer surface modification in attenuating Qdot-related cytotoxicity, genotoxicity perturbation and oxidative stress in a cellular system. We found that uncoated Qdots (U-Qdots) made of core/shell CdSe/ZnS could indeed induce cytotoxic effects, including the inhibition of cell growth. Also, both the neutral comet assay and gamma H2AX foci formation showed that U-Qdots caused significant DNA damage in a time- and dose-dependent manner. In contrast, results from cytotoxicity analysis and gamma H2AX generation indicate minimal impact on cells after exposure to PEG-coated Qdots. This lack of observed toxic effects from PEG-coated Qdots may be due to the fact that PEG-coating can inhibit ROS generation induced by U-Qdots. Based on these observations, we conclude that the genotoxicity of Qdots could be significantly decreased following proper surface modification, such as PEG encapsulation. In addition, PEG encapsulation may also serve as a general method to attenuate nanotoxicity for other nanoparticles. (C) 2013 Elsevier B.V. All rights reserved.
C1 [Ju, Li; Zhang, Guanglin; Zhang, Chen; Jiang, Ying; Yan, Chunlan; Yang, Jun] Zhejiang Univ, Sch Med, Affiliated Hosp 1, State Key Lab Infect Dis Diag & Therapy, Hangzhou 310003, Zhejiang, Peoples R China.
   [Ju, Li; Zhang, Guanglin; Zhang, Chen; Jiang, Ying; Yan, Chunlan; Zhu, Xinqiang] Zhejiang Univ, Sch Publ Hlth, Dept Toxicol, Hangzhou 310003, Zhejiang, Peoples R China.
   [Ju, Li; Zhang, Xing] Zhejiang Acad Med Sci, Hangzhou, Zhejiang, Peoples R China.
   [Sun, Li; Yang, Jun] Hangzhou Normal Univ, Sch Publ Hlth, Hangzhou 310036, Zhejiang, Peoples R China.
   [Duerksen-Hughes, Penelope J.] Loma Linda Univ, Sch Med, Dept Basic Sci, Div Biochem, Loma Linda, CA 92354 USA.
   [Chen, Fanqing Frank] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Life Sci, Berkeley, CA 94720 USA.
RP Yang, J (reprint author), Hangzhou Normal Univ, Dept Toxicol, Hangzhou 310036, Zhejiang, Peoples R China.
EM f_chen@lbl.gov; gastate@zju.edu.cn
FU National Natural Science Foundation of China [81172692, 81202241];
   Zhejiang Provincial Natural Science Foundation [R2100555, LY12H26006];
   Zhejiang Provincial Department of Education [Y201120063]
FX This work was supported in part by grants from National Natural Science
   Foundation of China (Nos. 81172692 and 81202241), Zhejiang Provincial
   Natural Science Foundation (Nos. R2100555 and LY12H26006), and Zhejiang
   Provincial Department of Education (No. Y201120063). J. Yang is a
   recipient of the Zhejiang Provincial Program for the Cultivation of
   High-level Innovative Health Talents.
NR 39
TC 12
Z9 13
U1 1
U2 42
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 1383-5718
J9 MUTAT RES-GEN TOX EN
JI Mutat. Res. Genet. Toxicol. Environ. Mutagen.
PD APR 30
PY 2013
VL 753
IS 1
BP 54
EP 64
DI 10.1016/j.mrgentox.2013.01.006
PG 11
WC Biotechnology & Applied Microbiology; Genetics & Heredity; Toxicology
SC Biotechnology & Applied Microbiology; Genetics & Heredity; Toxicology
GA 145QI
UT WOS:000319031500008
PM 23416234
ER

PT J
AU Oswald, C
   Urquijo, P
   Dingfelder, J
   Adachi, I
   Aihara, H
   Arinstein, K
   Asner, DM
   Aushev, T
   Bakich, AM
   Belous, K
   Bhardwaj, V
   Bhuyan, B
   Bondar, A
   Bonvicini, G
   Bozek, A
   Bracko, M
   Browder, TE
   Chang, P
   Chekelian, V
   Chen, A
   Chen, P
   Cheon, BG
   Chilikin, K
   Chistov, R
   Cho, K
   Chobanova, V
   Choi, SK
   Choi, Y
   Cinabro, D
   Dalseno, J
   Dolezal, Z
   Drasal, Z
   Drutskoy, A
   Dutta, D
   Eidelman, S
   Esen, S
   Farhat, H
   Fast, JE
   Gaur, V
   Gabyshev, N
   Ganguly, S
   Gillard, R
   Goh, YM
   Golob, B
   Haba, J
   Hayasaka, K
   Hayashii, H
   Horii, Y
   Hoshi, Y
   Hou, WS
   Hyun, HJ
   Iijima, T
   Ishikawa, A
   Itoh, R
   Iwasaki, Y
   Kah, DH
   Kang, JH
   Kato, E
   Kawasaki, T
   Kiesling, C
   Kim, HJ
   Kim, HO
   Kim, JB
   Kim, KT
   Kim, MJ
   Kim, YJ
   Kinoshita, K
   Klucar, J
   Ko, BR
   Korpar, S
   Kouzes, RT
   Krizan, P
   Krokovny, P
   Kronenbitter, B
   Kuhr, T
   Kumita, T
   Kwon, YJ
   Lee, SH
   Li, J
   Li, Y
   Libby, J
   Liu, C
   Liu, Y
   Liu, ZQ
   Liventsev, D
   Louvot, R
   Lutz, O
   Matvienko, D
   Miyabayashi, K
   Miyata, H
   Mizuk, R
   Mohanty, GB
   Moll, A
   Muramatsu, N
   Nagasaka, Y
   Nakano, E
   Nakao, M
   Nedelkovska, E
   Nisar, NK
   Nishida, S
   Nitoh, O
   Nozaki, T
   Ogawa, S
   Ohshima, T
   Okuno, S
   Olsen, SL
   Ostrowicz, W
   Pakhlov, P
   Pakhlova, G
   Park, H
   Park, HK
   Pedlar, TK
   Pestotnik, R
   Petric, M
   Piilonen, LE
   Prim, M
   Prothmann, K
   Ritter, M
   Rohrken, M
   Rozanska, M
   Ryu, S
   Sahoo, H
   Saito, T
   Sakai, Y
   Sandilya, S
   Santelj, L
   Sanuki, T
   Sato, Y
   Schneider, O
   Schnell, G
   Schwanda, C
   Schwartz, AJ
   Senyo, K
   Seon, O
   Sevior, ME
   Shapkin, M
   Shen, CP
   Shibata, TA
   Shiu, JG
   Shwartz, B
   Sibidanov, A
   Simon, F
   Smerkol, P
   Sohn, YS
   Sokolov, A
   Solovieva, E
   Staric, M
   Sumiyoshi, T
   Tatishvili, G
   Teramoto, Y
   Trabelsi, K
   Tsuboyama, T
   Uchida, M
   Uehara, S
   Uglov, T
   Unno, Y
   Uno, S
   Van Hulse, C
   Vanhoefer, P
   Varner, G
   Varvell, KE
   Wang, CH
   Wang, MZ
   Wang, P
   Watanabe, M
   Watanabe, Y
   Williams, KM
   Won, E
   Yamamoto, H
   Yamashita, Y
   Zhang, CC
   Zhang, ZP
   Zhilich, V
   Zupanc, A
AF Oswald, C.
   Urquijo, P.
   Dingfelder, J.
   Adachi, I.
   Aihara, H.
   Arinstein, K.
   Asner, D. M.
   Aushev, T.
   Bakich, A. M.
   Belous, K.
   Bhardwaj, V.
   Bhuyan, B.
   Bondar, A.
   Bonvicini, G.
   Bozek, A.
   Bracko, M.
   Browder, T. E.
   Chang, P.
   Chekelian, V.
   Chen, A.
   Chen, P.
   Cheon, B. G.
   Chilikin, K.
   Chistov, R.
   Cho, K.
   Chobanova, V.
   Choi, S. -K.
   Choi, Y.
   Cinabro, D.
   Dalseno, J.
   Dolezal, Z.
   Drasal, Z.
   Drutskoy, A.
   Dutta, D.
   Eidelman, S.
   Esen, S.
   Farhat, H.
   Fast, J. E.
   Gaur, V.
   Gabyshev, N.
   Ganguly, S.
   Gillard, R.
   Goh, Y. M.
   Golob, B.
   Haba, J.
   Hayasaka, K.
   Hayashii, H.
   Horii, Y.
   Hoshi, Y.
   Hou, W. -S.
   Hyun, H. J.
   Iijima, T.
   Ishikawa, A.
   Itoh, R.
   Iwasaki, Y.
   Kah, D. H.
   Kang, J. H.
   Kato, E.
   Kawasaki, T.
   Kiesling, C.
   Kim, H. J.
   Kim, H. O.
   Kim, J. B.
   Kim, K. T.
   Kim, M. J.
   Kim, Y. J.
   Kinoshita, K.
   Klucar, J.
   Ko, B. R.
   Korpar, S.
   Kouzes, R. T.
   Krizan, P.
   Krokovny, P.
   Kronenbitter, B.
   Kuhr, T.
   Kumita, T.
   Kwon, Y. -J.
   Lee, S. -H.
   Li, J.
   Li, Y.
   Libby, J.
   Liu, C.
   Liu, Y.
   Liu, Z. Q.
   Liventsev, D.
   Louvot, R.
   Lutz, O.
   Matvienko, D.
   Miyabayashi, K.
   Miyata, H.
   Mizuk, R.
   Mohanty, G. B.
   Moll, A.
   Muramatsu, N.
   Nagasaka, Y.
   Nakano, E.
   Nakao, M.
   Nedelkovska, E.
   Nisar, N. K.
   Nishida, S.
   Nitoh, O.
   Nozaki, T.
   Ogawa, S.
   Ohshima, T.
   Okuno, S.
   Olsen, S. L.
   Ostrowicz, W.
   Pakhlov, P.
   Pakhlova, G.
   Park, H.
   Park, H. K.
   Pedlar, T. K.
   Pestotnik, R.
   Petric, M.
   Piilonen, L. E.
   Prim, M.
   Prothmann, K.
   Ritter, M.
   Roehrken, M.
   Rozanska, M.
   Ryu, S.
   Sahoo, H.
   Saito, T.
   Sakai, Y.
   Sandilya, S.
   Santelj, L.
   Sanuki, T.
   Sato, Y.
   Schneider, O.
   Schnell, G.
   Schwanda, C.
   Schwartz, A. J.
   Senyo, K.
   Seon, O.
   Sevior, M. E.
   Shapkin, M.
   Shen, C. P.
   Shibata, T. -A.
   Shiu, J. -G.
   Shwartz, B.
   Sibidanov, A.
   Simon, F.
   Smerkol, P.
   Sohn, Y. -S.
   Sokolov, A.
   Solovieva, E.
   Staric, M.
   Sumiyoshi, T.
   Tatishvili, G.
   Teramoto, Y.
   Trabelsi, K.
   Tsuboyama, T.
   Uchida, M.
   Uehara, S.
   Uglov, T.
   Unno, Y.
   Uno, S.
   Van Hulse, C.
   Vanhoefer, P.
   Varner, G.
   Varvell, K. E.
   Wang, C. H.
   Wang, M. -Z.
   Wang, P.
   Watanabe, M.
   Watanabe, Y.
   Williams, K. M.
   Won, E.
   Yamamoto, H.
   Yamashita, Y.
   Zhang, C. C.
   Zhang, Z. P.
   Zhilich, V.
   Zupanc, A.
CA Belle Collaboration
TI Measurement of the inclusive semileptonic branching fraction B(B-s(0) ->
   X(-)l(+)v(l)) at Belle
SO PHYSICAL REVIEW D
LA English
DT Article
ID DECAYS; MODEL
AB We report a measurement of the inclusive semileptonic B-s(0) branching fraction in a 121 fb(-1) data sample collected near the Y(5S) resonance with the Belle detector at the KEKB asymmetric energy e(+)e(-) collider. Events containing B-s(0(*))(B) over bar (0(*))(s) pairs are selected by reconstructing a tag side D-s(+) and identifying a signal side lepton l(+) (l = e, mu) that is required to have the same- sign charge to ensure that both originate from different B-s(0) mesons. The B-s(0) -> X(-)l(+)v(l) branching fraction is extracted from the ratio of the measured yields of D-s(+) mesons and D(s)(+)l(+) pairs and the known production and branching fractions. The inclusive semileptonic branching fraction is measured to be [10.6 +/- 0.5(stat) +/- 0.7(syst)]%.
C1 [Schnell, G.; Van Hulse, C.] Univ Basque Country UPV EHU, Bilbao 48080, Spain.
   [Oswald, C.; Urquijo, P.; Dingfelder, J.] Univ Bonn, D-53115 Bonn, Germany.
   [Arinstein, K.; Bondar, A.; Eidelman, S.; Gabyshev, N.; Krokovny, P.; Matvienko, D.; Shiu, J. -G.; Zhilich, V.] Budker Inst Nucl Phys SB RAS, Novosibirsk 630090, Russia.
   [Arinstein, K.; Bondar, A.; Eidelman, S.; Gabyshev, N.; Krokovny, P.; Matvienko, D.; Shiu, J. -G.; Zhilich, V.] Novosibirsk State Univ, Novosibirsk 630090, Russia.
   [Dolezal, Z.; Drasal, Z.] Charles Univ Prague, Fac Math & Phys, CR-12116 Prague, Czech Republic.
   [Esen, S.; Kinoshita, K.; Liu, Y.; Schwartz, A. J.] Univ Cincinnati, Cincinnati, OH 45221 USA.
   [Choi, S. -K.] Gyeongsang Natl Univ, Chinju 660701, South Korea.
   [Cheon, B. G.; Goh, Y. M.; Unno, Y.] Hanyang Univ, Seoul 133791, South Korea.
   [Browder, T. E.; Sahoo, H.; Varner, G.] Univ Hawaii, Honolulu, HI 96822 USA.
   [Adachi, I.; Haba, J.; Itoh, R.; Iwasaki, Y.; Liventsev, D.; Nakao, M.; Nishida, S.; Nozaki, T.; Sakai, Y.; Trabelsi, K.; Tsuboyama, T.; Uehara, S.; Uno, S.] High Energy Accelerator Res Org KEK, Tsukuba, Ibaraki 3050801, Japan.
   [Nagasaka, Y.] Hiroshima Inst Technol, Hiroshima 7315193, Japan.
   [Schnell, G.] Ikerbasque, Bilbao 48011, Spain.
   [Bhuyan, B.; Dutta, D.] Indian Inst Technol Guwahati, Gauhati 781039, Assam, India.
   [Libby, J.] Indian Inst Technol, Madras 600036, Tamil Nadu, India.
   [Liu, Z. Q.; Wang, P.; Zhang, C. C.] Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China.
   [Schwanda, C.] Inst High Energy Phys, A-1050 Vienna, Austria.
   [Belous, K.; Shapkin, M.; Sokolov, A.] Inst High Energy Phys, Protvino 142281, Russia.
   [Aushev, T.; Chilikin, K.; Chistov, R.; Drutskoy, A.; Mizuk, R.; Pakhlov, P.; Pakhlova, G.; Solovieva, E.; Uglov, T.] Inst Theoret & Expt Phys, Moscow 117218, Russia.
   [Bracko, M.; Golob, B.; Klucar, J.; Korpar, S.; Krizan, P.; Pestotnik, R.; Petric, M.; Santelj, L.; Smerkol, P.; Staric, M.] J Stefan Inst, Ljubljana 1000, Slovenia.
   [Okuno, S.; Watanabe, Y.] Kanagawa Univ, Yokohama, Kanagawa 2218686, Japan.
   [Kronenbitter, B.; Kuhr, T.; Lutz, O.; Prim, M.; Roehrken, M.; Zupanc, A.] Karlsruher Inst Technol, Inst Expt Kernphys, D-76131 Karlsruhe, Germany.
   [Cho, K.; Kim, Y. J.] Korea Inst Sci & Technol Informat, Taejon 305806, South Korea.
   [Kim, J. B.; Kim, K. T.; Ko, B. R.; Lee, S. -H.; Won, E.] Korea Univ, Seoul 136713, South Korea.
   [Hyun, H. J.; Kah, D. H.; Kim, H. J.; Kim, H. O.; Kim, M. J.; Park, H.; Park, H. K.] Kyungpook Natl Univ, Taegu 702701, South Korea.
   [Louvot, R.; Schneider, O.] Ecole Polytech Fed Lausanne, CH-1015 Lausanne, Switzerland.
   [Golob, B.; Krizan, P.] Univ Ljubljana, Fac Math & Phys, Ljubljana 1000, Slovenia.
   [Pedlar, T. K.] Luther Coll, Decorah, IA 52101 USA.
   [Bracko, M.; Korpar, S.] Univ Maribor, SLO-2000 Maribor, Slovenia.
   [Chekelian, V.; Chobanova, V.; Dalseno, J.; Kiesling, C.; Moll, A.; Nedelkovska, E.; Prothmann, K.; Ritter, M.; Simon, F.; Vanhoefer, P.] Max Planck Inst Phys & Astrophys, D-80805 Munich, Germany.
   [Sevior, M. E.] Univ Melbourne, Sch Phys, Melbourne, Vic 3010, Australia.
   [Drutskoy, A.; Mizuk, R.; Pakhlov, P.] Moscow Phys Engn Inst, Moscow 115409, Russia.
   [Uglov, T.] Moscow Inst Phys & Technol, Dolgoprudnyi 141700, Moscow Region, Russia.
   [Iijima, T.; Ohshima, T.; Seon, O.; Shen, C. P.] Nagoya Univ, Grad Sch Sci, Nagoya, Aichi 4648602, Japan.
   [Hayasaka, K.; Horii, Y.; Iijima, T.] Nagoya Univ, Kobayashi Maskawa Inst, Nagoya, Aichi 4648602, Japan.
   [Bhardwaj, V.; Hayashii, H.; Miyabayashi, K.] Nara Womens Univ, Nara 6308506, Japan.
   [Chen, A.] Natl Cent Univ, Chungli 32054, Taiwan.
   [Wang, C. H.] Natl United Univ, Miaoli 36003, Taiwan.
   [Chang, P.; Chen, P.; Hou, W. -S.; Wang, M. -Z.] Natl Taiwan Univ, Dept Phys, Taipei 10617, Taiwan.
   [Bozek, A.; Ostrowicz, W.; Rozanska, M.] H Niewodniczanski Inst Nucl Phys, PL-31342 Krakow, Poland.
   [Yamashita, Y.] Nippon Dent Univ, Niigata 9518580, Japan.
   [Kawasaki, T.; Miyata, H.; Watanabe, M.] Niigata Univ, Niigata 9502181, Japan.
   [Nakano, E.; Teramoto, Y.] Osaka City Univ, Osaka 5588585, Japan.
   [Asner, D. M.; Fast, J. E.; Kouzes, R. T.; Tatishvili, G.] Pacific NW Natl Lab, Richland, WA 99352 USA.
   [Muramatsu, N.] Tohoku Univ, Res Ctr Electron Photon Sci, Sendai, Miyagi 9808578, Japan.
   [Liu, C.; Zhang, Z. P.] Univ Sci & Technol China, Hefei 230026, Peoples R China.
   [Li, J.; Olsen, S. L.; Ryu, S.] Seoul Natl Univ, Seoul 151742, South Korea.
   [Choi, Y.] Sungkyunkwan Univ, Suwon 440746, South Korea.
   [Bakich, A. M.; Shwartz, B.; Sibidanov, A.; Varvell, K. E.] Univ Sydney, Sch Phys, Sydney, NSW 2006, Australia.
   [Gaur, V.; Mohanty, G. B.; Nisar, N. K.; Sandilya, S.] Tata Inst Fundamental Res, Mumbai 400005, Maharashtra, India.
   [Dalseno, J.; Moll, A.; Prothmann, K.; Simon, F.] Tech Univ Munich, Excellence Cluster Universe, D-85748 Garching, Germany.
   [Ogawa, S.] Toho Univ, Funabashi, Chiba 2748510, Japan.
   [Hoshi, Y.] Tohoku Gakuin Univ, Tagajo, Miyagi 9858537, Japan.
   [Ishikawa, A.; Kato, E.; Saito, T.; Sanuki, T.; Sato, Y.; Yamamoto, H.] Tohoku Univ, Sendai, Miyagi 9808578, Japan.
   [Aihara, H.] Univ Tokyo, Dept Phys, Tokyo 1130033, Japan.
   [Shibata, T. -A.; Uchida, M.] Tokyo Inst Technol, Tokyo 1528550, Japan.
   [Kumita, T.; Sumiyoshi, T.] Tokyo Metropolitan Univ, Tokyo 1920397, Japan.
   [Nitoh, O.] Tokyo Univ Agr & Technol, Tokyo 1848588, Japan.
   [Li, Y.; Piilonen, L. E.; Williams, K. M.] Virginia Polytech Inst & State Univ, CNP, Blacksburg, VA 24061 USA.
   [Bonvicini, G.; Cinabro, D.; Farhat, H.; Ganguly, S.; Gillard, R.] Wayne State Univ, Detroit, MI 48202 USA.
   [Senyo, K.] Yamagata Univ, Yamagata 9908560, Japan.
   [Kang, J. H.; Kwon, Y. -J.; Sohn, Y. -S.] Yonsei Univ, Seoul 120749, South Korea.
RP Oswald, C (reprint author), Univ Basque Country UPV EHU, Bilbao 48080, Spain.
RI Aihara, Hiroaki/F-3854-2010; Ishikawa, Akimasa/G-6916-2012; Nitoh,
   Osamu/C-3522-2013; Pakhlov, Pavel/K-2158-2013; Uglov,
   Timofey/B-2406-2014; Mizuk, Roman/B-3751-2014; Krokovny,
   Pavel/G-4421-2016; Chilikin, Kirill/B-4402-2014; Chistov,
   Ruslan/B-4893-2014; Drutskoy, Alexey/C-8833-2016; Pakhlova,
   Galina/C-5378-2014; Solovieva, Elena/B-2449-2014
OI Aihara, Hiroaki/0000-0002-1907-5964; Pakhlov, Pavel/0000-0001-7426-4824;
   Uglov, Timofey/0000-0002-4944-1830; Krokovny, Pavel/0000-0002-1236-4667;
   Chilikin, Kirill/0000-0001-7620-2053; Chistov,
   Ruslan/0000-0003-1439-8390; Drutskoy, Alexey/0000-0003-4524-0422;
   Pakhlova, Galina/0000-0001-7518-3022; Solovieva,
   Elena/0000-0002-5735-4059
FU Ministry of Education, Culture, Sports, Science, and Technology (MEXT)
   of Japan; Japan Society for the Promotion of Science (JSPS); Tau-Lepton
   Physics Research Center of Nagoya University; Australian Research
   Council; Australian Department of Industry, Innovation, Science and
   Research; National Natural Science Foundation of China [10575109,
   10775142, 10875115, 10825524]; Ministry of Education, Youth and Sports
   of the Czech Republic [LA10033, MSM0021620859]; Department of Science
   and Technology of India; Istituto Nazionale di Fisica Nucleare of Italy;
   Ministry of Education, Science and Technology; National Research
   Foundation of Korea; GSDC of the Korea Institute of Science and
   Technology Information; Polish Ministry of Science and Higher Education;
   Ministry of Education and Science of the Russian Federation; Russian
   Federal Agency for Atomic Energy; Slovenian Research Agency; Swiss
   National Science Foundation; National Science Council; Ministry of
   Education of Taiwan; U.S. Department of Energy; National Science
   Foundation; MEXT; JSPS
FX We thank the KEKB group for the excellent operation of the accelerator;
   the KEK cryogenics group for the efficient operation of the solenoid;
   and the KEK computer group, the National Institute of Informatics, and
   the PNNL/EMSL computing group for valuable computing and SINET4 network
   support. We acknowledge support from the Ministry of Education, Culture,
   Sports, Science, and Technology (MEXT) of Japan, the Japan Society for
   the Promotion of Science (JSPS), and the Tau-Lepton Physics Research
   Center of Nagoya University; the Australian Research Council and the
   Australian Department of Industry, Innovation, Science and Research; the
   National Natural Science Foundation of China under Contracts No.
   10575109, No. 10775142, No. 10875115, and No. 10825524; the Ministry of
   Education, Youth and Sports of the Czech Republic under Contracts No.
   LA10033 and No. MSM0021620859; the Department of Science and Technology
   of India; the Istituto Nazionale di Fisica Nucleare of Italy; the BK21
   and WCU program of the Ministry of Education, Science and Technology,
   National Research Foundation of Korea, and GSDC of the Korea Institute
   of Science and Technology Information; the Polish Ministry of Science
   and Higher Education; the Ministry of Education and Science of the
   Russian Federation and the Russian Federal Agency for Atomic Energy; the
   Slovenian Research Agency; the Swiss National Science Foundation; the
   National Science Council and the Ministry of Education of Taiwan; and
   the U.S. Department of Energy and the National Science Foundation. This
   work is supported by a Grant-in-Aid from MEXT for Science Research in a
   Priority Area ("New Development of Flavor Physics''), and from JSPS for
   Creative Scientific Research ("Evolution of Tau-lepton Physics").
NR 29
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PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1550-7998
J9 PHYS REV D
JI Phys. Rev. D
PD APR 30
PY 2013
VL 87
IS 7
AR 072008
DI 10.1103/PhysRevD.87.072008
PG 10
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 144LN
UT WOS:000318940900002
ER

PT J
AU Wang, KL
   Liu, YX
   Chang, L
   Roberts, CD
   Schmidt, SM
AF Wang, Kun-lun
   Liu, Yu-xin
   Chang, Lei
   Roberts, Craig D.
   Schmidt, Sebastian M.
TI Baryon and meson screening masses
SO PHYSICAL REVIEW D
LA English
DT Article
ID DYSON-SCHWINGER EQUATIONS; JONA-LASINIO MODEL; QUANTUM CHROMODYNAMICS;
   FINITE-TEMPERATURE; QUARK CONFINEMENT; HADRON PROPERTIES; FADDEEV
   APPROACH; LIGHT QUARKS; QCD; NUCLEON
AB In a strongly coupled quark-gluon plasma, collective excitations of gluons and quarks should dominate over the excitation of individual quasifree gluon and quark modes. To explore this possibility, we computed screening masses for ground-state light-quark mesons and baryons at leading order in a symmetry-preserving truncation scheme for the Dyson-Schwinger equations using a confining formulation of a contact interaction at nonzero temperature. Meson screening masses are obtained from Bethe-Salpeter equations, and baryon analogues from a novel construction of the Faddeev equation, which employs an improved quark-exchange approximation in the kernel. Our treatment implements a deconfinement transition that is coincident with chiral symmetry restoration in the chiral limit, when both transitions are second order. Despite deconfinement, in all T 0 bound-state channels, strong correlations persist above the critical temperature, T > T-c; and, in the spectrum defined by the associated screening masses, degeneracy between parity-partner correlations is apparent for T greater than or similar to 1.3T(c). Notwithstanding these results, there are reasons (including Golberger-Treiman relations) to suppose that the inertial masses of light-quark bound states, when they may be defined, vanish at the deconfinement temperature, and that this is a signal of bound-state dissolution. Where a sensible comparison is possible, our predictions are consistent with results from contemporary numerical simulations of lattice-regularized QCD.
C1 [Wang, Kun-lun; Liu, Yu-xin] Peking Univ, Dept Phys, Ctr High Energy Phys, Beijing 100871, Peoples R China.
   [Wang, Kun-lun; Liu, Yu-xin] Peking Univ, State Key Lab Nucl Phys & Technol, Beijing 100871, Peoples R China.
   [Chang, Lei] Forschungszentrum Julich, Inst Kernphys, D-52425 Julich, Germany.
   [Roberts, Craig D.] Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA.
   [Roberts, Craig D.] Illinois Inst Technol, Dept Phys, Chicago, IL 60616 USA.
   [Schmidt, Sebastian M.] Forschungszentrum Julich, Inst Adv Simulat, D-52425 Julich, Germany.
RP Liu, YX (reprint author), Peking Univ, Dept Phys, Ctr High Energy Phys, Beijing 100871, Peoples R China.
EM yxliu@pku.edu.cn; cdroberts@anl.gov
FU National Natural Science Foundation of China [10935001, 11075052,
   11175004]; National Key Basic Research Program of China [2013CB834400];
   Forschungszentrum Julich GmbH; U.S. Department of Energy, Office of
   Nuclear Physics [DE-AC02-06CH11357]
FX We thank C. Chen, T. Klahn, R. Rapp, D. H. Rischke, and A. Sedrakian for
   valuable comments and explanations. This work was supported by the
   National Natural Science Foundation of China under Contracts No.
   10935001, No. 11075052, and No. 11175004; the National Key Basic
   Research Program of China under Contract No. 2013CB834400;
   Forschungszentrum Julich GmbH; and U.S. Department of Energy, Office of
   Nuclear Physics, Contract No. DE-AC02-06CH11357.
NR 117
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PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1550-7998
J9 PHYS REV D
JI Phys. Rev. D
PD APR 30
PY 2013
VL 87
IS 7
AR 074038
DI 10.1103/PhysRevD.87.074038
PG 22
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 144LN
UT WOS:000318940900005
ER

PT J
AU Zhang, C
   Qian, X
   Vogel, P
AF Zhang, C.
   Qian, X.
   Vogel, P.
TI Reactor antineutrino anomaly with known theta(13)
SO PHYSICAL REVIEW D
LA English
DT Article
ID NUCLEAR-POWER-REACTOR; NEUTRINO OSCILLATIONS; SEARCH; BUGEY; GALLEX
AB We revisit the reactor antineutrino anomaly using the recent reactor flux independent determination of sizable theta(13) by considering the full set of the absolute reactor (nu) over bar (e) flux measurements. When normalized to the predicted flux of Mueller et al. [Phys. Rev. C 83, 054615 (2011)], the new world average, after including results from Palo Verde, Chooz, and Double Chooz, is 0.959 +/- 0.009 (experiment uncertainty) +/- 0.027 (flux systematics). Including the data with kilometer baseline, the new world average is only about 1.4 sigma lower than the unity, weakening the significance of the reactor antineutrino anomaly. The upcoming results from Daya Bay, RENO, and the Double Chooz will provide further information about this issue.
C1 [Zhang, C.] Brookhaven Natl Lab, Upton, NY 11973 USA.
   [Qian, X.; Vogel, P.] CALTECH, Kellogg Radiat Lab, Pasadena, CA 91125 USA.
RP Zhang, C (reprint author), Brookhaven Natl Lab, Upton, NY 11973 USA.
EM chao@bnl.gov; xqian@caltech.edu; pxv@caltech.edu
OI Qian, Xin/0000-0002-7903-7935; Zhang, Chao/0000-0003-2298-6272
FU Caltech; National Science Foundation; Department of Energy
   [DE-AC02-98CH10886]
FX We would like to thank R. D. McKeown and W. Wang for fruitful
   discussions. This work was supported in part by Caltech, the National
   Science Foundation, and the Department of Energy under Contract No.
   DE-AC02-98CH10886.
NR 33
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PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1550-7998
EI 1550-2368
J9 PHYS REV D
JI Phys. Rev. D
PD APR 30
PY 2013
VL 87
IS 7
AR 073018
DI 10.1103/PhysRevD.87.073018
PG 5
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 144LN
UT WOS:000318940900003
ER

PT J
AU Stockem, A
   Boella, E
   Fiuza, F
   Silva, LO
AF Stockem, A.
   Boella, E.
   Fiuza, F.
   Silva, L. O.
TI Relativistic generalization of formation and ion-reflection conditions
   in electrostatic shocks
SO PHYSICAL REVIEW E
LA English
DT Article
ID DOUBLE-LAYERS; COLLISIONLESS SHOCKS; ACCELERATORS; BEAMS; WAVE
AB The theoretical model by Sorasio et al. [Phys. Rev. Lett. 96, 045005 (2006)] for the steady state Mach number of electrostatic shocks formed in the interaction of two plasma slabs of arbitrary density and temperature is generalized for relativistic electron and nonrelativistic ion temperatures. We find that the relativistic correction leads to lower Mach numbers and as a consequence ions are reflected with lower energies. The steady state bulk velocity of the downstream population is introduced as an additional parameter to describe the transition between the minimum and maximum Mach numbers that is dependent on the initial density and temperature ratios. In order to transform the solitonlike solution in the upstream region into a shock, a population of reflected ions is considered and differences from a zero-ion temperature model are discussed.
C1 [Stockem, A.; Boella, E.; Fiuza, F.; Silva, L. O.] Inst Super Tecn, Grp Lasers & Plasmas, Lab Associado, Inst Plasmas & Fusao Nucl, P-1049001 Lisbon, Portugal.
   [Boella, E.] Politecn Torino, Dipartimento Energia, I-10129 Turin, Italy.
   [Fiuza, F.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
RP Stockem, A (reprint author), Inst Super Tecn, Grp Lasers & Plasmas, Lab Associado, Inst Plasmas & Fusao Nucl, P-1049001 Lisbon, Portugal.
EM anne.stockem@ist.utl.pt; luis.silva@ist.utl.pt
RI Silva, Luis/C-3169-2009; Boella, Elisabetta/K-6607-2015; 
OI Silva, Luis/0000-0003-2906-924X; Boella, Elisabetta/0000-0003-1970-6794;
   Stockem, Anne Gabriele/0000-0003-4614-8118; Fiuza,
   Frederico/0000-0002-8502-5535
FU European Research Council [267841]; FCT (Portugal) [SFRH/BPD/65008/2009,
   SFRH/BD/38952/2007, PTDC/FIS/111720/2009]
FX This work was partially supported by the European Research Council
   (Grant No. 267841) and FCT (Portugal) Grants No. SFRH/BPD/65008/2009,
   No. SFRH/BD/38952/2007, and No. PTDC/FIS/111720/2009. We would like to
   thank Prof. G. Coppa and Prof. R. Bingham for fruitful discussions.
NR 30
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PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1539-3755
J9 PHYS REV E
JI Phys. Rev. E
PD APR 30
PY 2013
VL 87
IS 4
AR 043116
DI 10.1103/PhysRevE.87.043116
PG 7
WC Physics, Fluids & Plasmas; Physics, Mathematical
SC Physics
GA 145HA
UT WOS:000319004700010
PM 23679538
ER

PT J
AU Terletska, H
   Yang, SX
   Meng, ZY
   Moreno, J
   Jarrell, M
AF Terletska, H.
   Yang, S. -X.
   Meng, Z. Y.
   Moreno, J.
   Jarrell, M.
TI Dual fermion method for disordered electronic systems
SO PHYSICAL REVIEW B
LA English
DT Article
ID LOCALIZATION; APPROXIMATIONS; ALLOYS; MODEL
AB While the coherent potential approximation (CPA) is the prevalent method for the study of disordered electronic systems, it fails to capture nonlocal correlations and Anderson localization. To incorporate such effects, we extend the dual fermion approach to disordered systems using the replica method. The developed method utilizes the exact mapping to the dual fermion variables, and includes intersite scattering via diagrammatic perturbation theory in the dual variables. The CPA is recovered as a zeroth-order approximation. Results for single- and two-particle quantities show good agreement with a cluster extension of the CPA; moreover, weak localization is captured. As a natural extension of the CPA, our method presents an alternative to existing nonlocal cluster theories for disordered systems, and has potential applications in the study of disordered systems with electronic interactions.
C1 [Terletska, H.] Brookhaven Natl Lab, Condensed Matter Phys & Mat Sci Dept, Upton, NY 11973 USA.
   [Yang, S. -X.; Meng, Z. Y.; Moreno, J.; Jarrell, M.] Louisiana State Univ, Dept Phys & Astron, Baton Rouge, LA 70803 USA.
   [Yang, S. -X.; Meng, Z. Y.; Moreno, J.; Jarrell, M.] Louisiana State Univ, Ctr Computat & Technol, Baton Rouge, LA 70803 USA.
RP Terletska, H (reprint author), Brookhaven Natl Lab, Condensed Matter Phys & Mat Sci Dept, Upton, NY 11973 USA.
EM terletska.hanna@gmail.com
RI Moreno, Juana/D-5882-2012; Meng, Zi Yang/F-5212-2012
OI Meng, Zi Yang/0000-0001-9771-7494
FU US Department of Energy (DOE), Computational Materials and Chemical
   Sciences Network (CMCSN) [DE-AC02-98CH10886]; DOE Scientific Discovery
   through Advanced Computing (SciDAC) Grant [DE-FC02-06ER25792]; National
   Science Foundation (NSF) [OISE-0952300]; NSF EPSCoR [EPS-1003897]
FX We thank V. Janis, V. Dobrosavljevic, and K. M. Tam for very useful
   discussions. We also thank K. S. Chen for some help with analytical
   continuation of our data. Finally, we thank J. Jarrell for a careful
   reading of the manuscript. This work is supported by the US Department
   of Energy (DOE), Computational Materials and Chemical Sciences Network
   (CMCSN) Grant No. DE-AC02-98CH10886 (H. T.) and DOE Scientific Discovery
   through Advanced Computing (SciDAC) Grant No. DE-FC02-06ER25792 (S.Y.
   and M.J.). Additional support was provided by National Science
   Foundation (NSF) Grant No. OISE-0952300 (J.M.), and NSF EPSCoR
   Cooperative Agreement No. EPS-1003897 (Z.M.).
NR 31
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U1 7
U2 12
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD APR 30
PY 2013
VL 87
IS 13
AR 134208
DI 10.1103/PhysRevB.87.134208
PG 6
WC Physics, Condensed Matter
SC Physics
GA 138KJ
UT WOS:000318507200003
ER

PT J
AU Trassin, M
   Clarkson, JD
   Bowden, SR
   Liu, J
   Heron, JT
   Paull, RJ
   Arenholz, E
   Pierce, DT
   Unguris, J
AF Trassin, M.
   Clarkson, J. D.
   Bowden, S. R.
   Liu, Jian
   Heron, J. T.
   Paull, R. J.
   Arenholz, E.
   Pierce, D. T.
   Unguris, J.
TI Interfacial coupling in multiferroic/ferromagnet heterostructures
SO PHYSICAL REVIEW B
LA English
DT Article
ID BIFEO3 THIN-FILMS; SCANNING-ELECTRON-MICROSCOPY; NANOSCALE CONTROL;
   ROOM-TEMPERATURE; DOMAIN CONTROL; EXCHANGE BIAS; MULTIFERROICS
AB We report local probe investigations of the magnetic interaction between BiFeO3 films and a ferromagnetic Co0.9Fe0.1 layer. Within the constraints of intralayer exchange coupling in the Co0.9Fe0.1, the multiferroic imprint in the ferromagnet results in a collinear arrangement of the local magnetization and the in-plane BiFeO3 ferroelectric polarization. The magnetic anisotropy is uniaxial, and an in-plane effective coupling field of order 10 mT is derived. Measurements as a function of multiferroic layer thickness show that the influence of the multiferroic layer on the magnetic layer becomes negligible for 3 nm thick BiFeO3 films. We ascribe this breakdown in the exchange coupling to a weakening of the antiferromagnetic order in the ultrathin BiFeO3 film based on our x-ray linear dichroism measurements. These observations are consistent with an interfacial exchange coupling between the CoFe moments and a canted antiferromagnetic moment in the BiFeO3.
C1 [Trassin, M.; Liu, Jian] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
   [Trassin, M.] Swiss Fed Inst Technol, Dept Mat, CH-8093 Zurich, Switzerland.
   [Clarkson, J. D.; Heron, J. T.; Paull, R. J.] Univ Calif Berkeley, Dept Mat Sci & Engn, Berkeley, CA 94720 USA.
   [Bowden, S. R.; Pierce, D. T.; Unguris, J.] NIST, Ctr Nanoscale Sci & Technol, Gaithersburg, MD 20899 USA.
   [Bowden, S. R.] Univ Maryland, Maryland Nanoctr, College Pk, MD 20742 USA.
   [Arenholz, E.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Adv Light Source, Berkeley, CA 94720 USA.
RP Trassin, M (reprint author), Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
EM morgan.trassin@mat.ethz.ch; john.unguris@nist.gov
RI Liu, Jian/I-6746-2013; Unguris, John/J-3989-2014
OI Liu, Jian/0000-0001-7962-2547; 
FU University of Maryland; National Institute of Standards and Technology
   Center for Nanoscale Science and Technology through the University of
   Maryland [70NANB10H193]; Center for Energy Efficient Electronics Science
   (NSF) [0939514]
FX We sincerely thank D. Meier and R. Ramesh for the thoughtful discussions
   and B. Kim and Y. Bobrov for their assistance with the MFM under
   external magnetic field. We also gratefully acknowledge helpful
   discussions with R. D. McMichael and M. D. Stiles and the technical
   assistance of S. Blankenship and G. Holland. S. Bowden acknowledges
   support under the Cooperative Research Agreement between the University
   of Maryland and the National Institute of Standards and Technology
   Center for Nanoscale Science and Technology, Award 70NANB10H193, through
   the University of Maryland. M. Trassin acknowledges the support from the
   Center for Energy Efficient Electronics Science (NSF Grant No. 0939514).
NR 37
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U1 3
U2 111
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD APR 30
PY 2013
VL 87
IS 13
AR 134426
DI 10.1103/PhysRevB.87.134426
PG 6
WC Physics, Condensed Matter
SC Physics
GA 138KJ
UT WOS:000318507200004
ER

PT J
AU Lyubutin, IS
   Struzhkin, VV
   Mironovich, AA
   Gavriliuk, AG
   Naumov, PG
   Lin, JF
   Ovchinnikov, SG
   Sinogeikin, S
   Chow, P
   Xiao, YM
   Hemley, RJ
AF Lyubutin, Igor S.
   Struzhkin, Viktor V.
   Mironovich, A. A.
   Gavriliuk, Alexander G.
   Naumov, Pavel G.
   Lin, Jung-Fu
   Ovchinnikov, Sergey G.
   Sinogeikin, Stanislav
   Chow, Paul
   Xiao, Yuming
   Hemley, Russell J.
TI Quantum critical point and spin fluctuations in lower-mantle
   ferropericlase
SO PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF
   AMERICA
LA English
DT Article
DE diamond anvil cell; synchrotron radiation; Mott insulator; spin
   crossover
ID EARTHS LOWER MANTLE; HIGH-PRESSURE; TRANSITION; IRON; MAGNESIOWUSTITE;
   STATE; MOSSBAUER; MINERALS; PHASE; MGO
AB Ferropericlase [(Mg,Fe)O] is one of the most abundant minerals of the earth's lower mantle. The high-spin (HS) to low-spin (LS) transition in the Fe2+ ions may dramatically alter the physical and chemical properties of (Mg,Fe) O in the deep mantle. To understand the effects of compression on the ground electronic state of iron, electronic and magnetic states of Fe2+ in (Mg0.75Fe0.25)O have been investigated using transmission and synchrotron Mossbauer spectroscopy at high pressures and low temperatures (down to 5 K). Our results show that the ground electronic state of Fe2+ at the critical pressure P-c of the spin transition close to T = 0 is governed by a quantum critical point (T = 0, P = P-c) at which the energy required for the fluctuation between HS and LS states is zero. Analysis of the data gives P-c = 55 GPa. Thermal excitation within the HS or LS states (T > 0 K) is expected to strongly influence the magnetic as well as physical properties of ferropericlase. Multielectron theoretical calculations show that the existence of the quantum critical point at temperatures approaching zero affects not only physical properties of ferropericlase at low temperatures but also its properties at P-T of the earth's lower mantle.
C1 [Lyubutin, Igor S.; Gavriliuk, Alexander G.; Naumov, Pavel G.] Russian Acad Sci, Inst Crystallog, Moscow 119333, Russia.
   [Struzhkin, Viktor V.; Gavriliuk, Alexander G.; Hemley, Russell J.] Carnegie Inst Sci, Geophys Lab, Washington, DC 20015 USA.
   [Mironovich, A. A.; Gavriliuk, Alexander G.] Russian Acad Sci, Inst Nucl Res, Moscow 142190, Russia.
   [Lin, Jung-Fu] Univ Texas Austin, Dept Geol Sci, Jackson Sch Geosci, Austin, TX 78712 USA.
   [Ovchinnikov, Sergey G.] Russian Acad Sci, Siberian Branch, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia.
   [Ovchinnikov, Sergey G.] Siberian Fed Univ, Krasnoyarsk 660041, Russia.
   [Sinogeikin, Stanislav; Chow, Paul; Xiao, Yuming] Argonne Natl Lab, Adv Photon Source, Carnegie Inst Washington, High Pressure Collaborat Access Team,Geophys Lab, Argonne, IL 60439 USA.
RP Hemley, RJ (reprint author), Carnegie Inst Sci, Geophys Lab, Washington, DC 20015 USA.
EM hemley@gl.ciw.edu
RI Mironovich, Anna/K-2303-2015; Gavriliuk, Alexander/G-1317-2011; Lin,
   Jung-Fu/B-4917-2011; Struzhkin, Viktor/J-9847-2013; Naumov,
   Pavel/G-2149-2010
OI Mironovich, Anna/0000-0002-0808-4355; Gavriliuk,
   Alexander/0000-0003-0604-586X; Struzhkin, Viktor/0000-0002-3468-0548;
   Naumov, Pavel/0000-0003-3085-6048
FU Russian Foundation for Basic Research [11-02-00636, 10-02-00251,
   11-02-00291, 12-02-90410, 12-02-31543]; Siberian Branch of Russian
   Academy of Science [96]; Siberian Federal University [F11]; Presidium
   Russian Academy of Science (RAS) [2.16]; RAS; US Department of Energy
   (DOE) [DE-FG02-02ER45955]; US National Science Foundation [(NSF)]
   [EAR-0838221]; Energy Frontier Research in Extreme Environments Center;
   Carnegie/DOE Alliance Center; DOE-BES; DOE-National Nuclear Security
   Administration; NSF [EAR-1119504]; W. M. Keck Foundation; DOE-BES
   [DE-AC02-06CH11357];  [NSh-1044.2012.2]
FX We thank Yu. S. Orlov and A. Wheat for useful discussion. This work is
   supported by Russian Foundation for Basic Research Grants 11-02-00636,
   10-02-00251, 11-02-00291, 12-02-90410, and 12-02-31543; Siberian Branch
   of Russian Academy of Science Integration Grant 96; Grant
   NSh-1044.2012.2; Siberian Federal University Grant F11; Presidium
   Russian Academy of Science (RAS) Program 2.16; and RAS Program
   "Elementary partical physics, fundamental nuclear physics, and nuclear
   technologies." Support from US Department of Energy (DOE) Grant
   DE-FG02-02ER45955 for the work at Carnegie and at the Advanced Photon
   Source (APS) synchrotron facility is greatly acknowledged. The work at
   University of Texas at Austin was supported by the US National Science
   Foundation [(NSF) EAR-0838221], the Energy Frontier Research in Extreme
   Environments Center, and the Carnegie/DOE Alliance Center. The
   synchrotron Mossbauer work was performed at HPCAT (Sector 16), APS,
   Argonne National Laboratory. High Pressure Collaborative Access Team is
   supported by DOE-BES, DOE-National Nuclear Security Administration, NSF
   (EAR-1119504), and the W. M. Keck Foundation. APS is supported by
   DOE-BES under Contract DE-AC02-06CH11357.
NR 52
TC 10
Z9 10
U1 1
U2 27
PU NATL ACAD SCIENCES
PI WASHINGTON
PA 2101 CONSTITUTION AVE NW, WASHINGTON, DC 20418 USA
SN 0027-8424
J9 P NATL ACAD SCI USA
JI Proc. Natl. Acad. Sci. U. S. A.
PD APR 30
PY 2013
VL 110
IS 18
BP 7142
EP 7147
DI 10.1073/pnas.1304827110
PG 6
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA 140UV
UT WOS:000318682300020
PM 23589892
ER

PT J
AU You, C
   Chen, HG
   Myung, S
   Sathitsuksanoh, N
   Ma, H
   Zhang, XZ
   Li, JY
   Zhang, YHP
AF You, Chun
   Chen, Hongge
   Myung, Suwan
   Sathitsuksanoh, Noppadon
   Ma, Hui
   Zhang, Xiao-Zhou
   Li, Jianyong
   Zhang, Y. -H. Percival
TI Enzymatic transformation of nonfood biomass to starch
SO PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF
   AMERICA
LA English
DT Article
DE bioeconomy; food and feed; synthetic amylose; in vitro synthetic
   biology; cell-free biomanufacturing
ID LIGNOCELLULOSIC BIOFUELS; CELLOBIOSE PHOSPHORYLASE;
   CLOSTRIDIUM-THERMOCELLUM; CELLULOSIC MATERIALS; HYDROGEN; AMYLOSE; COST;
   CHALLENGE; PATHWAY; COMPLEX
AB The global demand for food could double in another 40 y owing to growth in the population and food consumption per capita. To meet the world's future food and sustainability needs for biofuels and renewable materials, the production of starch-rich cereals and cellulose-rich bioenergy plants must grow substantially while minimizing agriculture's environmental footprint and conserving biodiversity. Here we demonstrate one-pot enzymatic conversion of pretreated biomass to starch through a nonnatural synthetic enzymatic pathway composed of endoglucanase, cellobiohydrolyase, cellobiose phosphorylase, and alpha-glucan phosphorylase originating from bacterial, fungal, and plant sources. A special polypeptide cap in potato alpha-glucan phosphorylase was essential to push a partially hydrolyzed intermediate of cellulose forward to the synthesis of amylose. Up to 30% of the anhydroglucose units in cellulose were converted to starch; the remaining cellulose was hydrolyzed to glucose suitable for ethanol production by yeast in the same bioreactor. Next-generation biorefineries based on simultaneous enzymatic biotransformation and microbial fermentation could address the food, biofuels, and environment trilemma.
C1 [You, Chun; Chen, Hongge; Myung, Suwan; Sathitsuksanoh, Noppadon; Zhang, Xiao-Zhou; Zhang, Y. -H. Percival] Virginia Polytech Inst & State Univ, Biol Syst Engn Dept, Blacksburg, VA 24061 USA.
   [Myung, Suwan; Sathitsuksanoh, Noppadon; Zhang, Y. -H. Percival] Virginia Polytech Inst & State Univ, Inst Crit Technol & Appl Sci, Blacksburg, VA 24061 USA.
   [Li, Jianyong] Virginia Polytech Inst & State Univ, Dept Biochem, Blacksburg, VA 24061 USA.
   [Chen, Hongge] Henan Agr Univ, Coll Life Sci, Zhengzhou 450002, Peoples R China.
   [Ma, Hui; Zhang, Xiao-Zhou; Zhang, Y. -H. Percival] Gate Fuels Inc, Blacksburg, VA 24060 USA.
   [Zhang, Y. -H. Percival] BioEnergy Sci Ctr, Dept Energy, Oak Ridge, TN 37831 USA.
   [Zhang, Y. -H. Percival] Cell Free Bioinnovat Inc, Blacksburg, VA 24060 USA.
RP Zhang, YHP (reprint author), Virginia Polytech Inst & State Univ, Biol Syst Engn Dept, Blacksburg, VA 24061 USA.
EM ypzhang@vt.edu
RI You, Chun/D-7656-2013; sathitsuksanoh, noppadon/O-6305-2014
OI sathitsuksanoh, noppadon/0000-0003-1521-9155
FU Biological Systems Engineering Department of Virginia Polytechnic
   Institute and State University; College of Agriculture and Life Sciences
   Biodesign and Bioprocessing Research Center; Shell GameChanger Program;
   Department of Energy BioEnergy Science Center; China Scholarship Council
FX This work was supported by the Biological Systems Engineering Department
   of Virginia Polytechnic Institute and State University and partially
   supported by the College of Agriculture and Life Sciences Biodesign and
   Bioprocessing Research Center, Shell GameChanger Program, and the
   Department of Energy BioEnergy Science Center (Y.-H.P.Z.). H.C. was
   partially supported by the China Scholarship Council.
NR 48
TC 45
Z9 47
U1 9
U2 99
PU NATL ACAD SCIENCES
PI WASHINGTON
PA 2101 CONSTITUTION AVE NW, WASHINGTON, DC 20418 USA
SN 0027-8424
J9 P NATL ACAD SCI USA
JI Proc. Natl. Acad. Sci. U. S. A.
PD APR 30
PY 2013
VL 110
IS 18
BP 7182
EP 7187
DI 10.1073/pnas.1302420110
PG 6
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA 140UV
UT WOS:000318682300027
PM 23589840
ER

PT J
AU Yu, XH
   Seegar, TCM
   Dalton, AC
   Tzvetkova-Robev, D
   Goldgur, Y
   Rajashankar, KR
   Nikolov, DB
   Barton, WA
AF Yu, Xuehong
   Seegar, Tom C. M.
   Dalton, Annamarie C.
   Tzvetkova-Robev, Dorothea
   Goldgur, Yehuda
   Rajashankar, Kanagalaghatta R.
   Nikolov, Dimitar B.
   Barton, William A.
TI Structural basis for angiopoietin-1-mediated signaling initiation
SO PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF
   AMERICA
LA English
DT Article
DE cellular signaling; Tie receptor tyrosine kinase; X-ray crystallography
ID BLOOD-VESSEL FORMATION; RECEPTOR-BINDING; TIE2 RECEPTOR; ANGIOGENESIS;
   ECTODOMAIN; PATHWAY; AMORE; MODEL
AB Angiogenesis is a complex cellular process involving multiple regulatory growth factors and growth factor receptors. Among them, the ligands for the endothelial-specific tunica intima endothelial receptor tyrosine kinase 2 (Tie2) receptor kinase, angiopoietin-1 (Ang1) and Ang2, play essential roles in balancing vessel stability and regression during both developmental and tumor-induced angiogenesis. Despite possessing a high degree of sequence identity, Ang1 and Ang2 have distinct functional roles and cell-signaling characteristics. Here, we present the crystal structures of Ang1 both unbound and in complex with the Tie2 ectodomain. Comparison of the Ang1-containing structures with their Ang2-containing counterparts provide insight into the mechanism of receptor activation and reveal molecular surfaces important for interactions with Tie2 coreceptors and associated signaling proteins. Using structure-based mutagenesis, we identify a loop within the angiopoietin P domain, adjacent to the receptor-binding interface, which confers the specific agonist/antagonist properties of the molecule. We demonstrate using cell-based assays that an Ang2 chimera containing the Ang1 loop sequence behaves functionally similarly to Ang1 as a constitutive Tie2 agonist, able to efficiently dissociate the inhibitory Tie1/Tie2 complex and elicit Tie2 clustering and downstream signaling.
C1 [Yu, Xuehong; Tzvetkova-Robev, Dorothea; Goldgur, Yehuda; Nikolov, Dimitar B.] Mem Sloan Kettering Canc Ctr, Struct Biol Program, New York, NY 10021 USA.
   [Seegar, Tom C. M.; Dalton, Annamarie C.; Barton, William A.] Virginia Commonwealth Univ, Dept Biochem & Mol Biol, Richmond, VA 23298 USA.
   [Rajashankar, Kanagalaghatta R.] Argonne Natl Lab, Adv Photon Source, NECAT, Argonne, IL 60439 USA.
RP Nikolov, DB (reprint author), Mem Sloan Kettering Canc Ctr, Struct Biol Program, 1275 York Ave, New York, NY 10021 USA.
EM nikolovd@mskcc.org; wabarton@vcu.edu
FU National Institutes of Health (NIH) [1R01CA127501, 1R01HL077249]; Massey
   Cancer Center and School of Medicine [Virginia Commonwealth University
   (VCU)]; NIH National Institute of Neurological Disorders and Stroke
   Center Core [5P30NS047463]; National Center for Research Resources
   [5P41RR015301-10]; National Institute of General Medical Sciences [8 P41
   GM103403-10]; Department of Energy [DE-AC02-06CH11357]
FX This research was supported by National Institutes of Health (NIH)
   Grants 1R01CA127501 (to W.A.B.) and 1R01HL077249 (to D.B.N.), as well as
   pilot project funding from the Massey Cancer Center and School of
   Medicine [Virginia Commonwealth University (VCU)] (to W.A.B.).
   Microscopy was performed at the VCU Department of Neurobiology and
   Anatomy Microscopy Facility, supported, in part, by NIH National
   Institute of Neurological Disorders and Stroke Center Core Grant
   5P30NS047463. X-ray diffraction studies were conducted at the Advanced
   Photon Source on the Northeastern Collaborative Access Team beamlines,
   which are supported by National Center for Research Resources Grant
   5P41RR015301-10, National Institute of General Medical Sciences Grant 8
   P41 GM103403-10, and Department of Energy Contract DE-AC02-06CH11357.
NR 25
TC 16
Z9 17
U1 0
U2 7
PU NATL ACAD SCIENCES
PI WASHINGTON
PA 2101 CONSTITUTION AVE NW, WASHINGTON, DC 20418 USA
SN 0027-8424
J9 P NATL ACAD SCI USA
JI Proc. Natl. Acad. Sci. U. S. A.
PD APR 30
PY 2013
VL 110
IS 18
BP 7205
EP 7210
DI 10.1073/pnas.1216890110
PG 6
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA 140UV
UT WOS:000318682300031
PM 23592718
ER

PT J
AU Boslough, M
AF Boslough, Mark
TI Faulty protocols yield contaminated samples, unconfirmed results
SO PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF
   AMERICA
LA English
DT Letter
ID INDEPENDENT EVALUATION; IMPACT HYPOTHESIS
C1 Sandia Natl Labs, Discrete Math & Complex Syst Dept, Albuquerque, NM 87185 USA.
RP Boslough, M (reprint author), Sandia Natl Labs, Discrete Math & Complex Syst Dept, POB 5800, Albuquerque, NM 87185 USA.
EM mbeb@unm.edu
NR 5
TC 3
Z9 3
U1 1
U2 6
PU NATL ACAD SCIENCES
PI WASHINGTON
PA 2101 CONSTITUTION AVE NW, WASHINGTON, DC 20418 USA
SN 0027-8424
J9 P NATL ACAD SCI USA
JI Proc. Natl. Acad. Sci. U. S. A.
PD APR 30
PY 2013
VL 110
IS 18
BP E1651
EP E1651
DI 10.1073/pnas.1220567110
PG 1
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA 140UV
UT WOS:000318682300001
PM 23599285
ER

PT J
AU Cardiel, JJ
   Dohnalkova, AC
   Dubash, N
   Zhao, Y
   Cheung, P
   Shen, AQ
AF Cardiel, Joshua J.
   Dohnalkova, Alice C.
   Dubash, Neville
   Zhao, Ya
   Cheung, Perry
   Shen, Amy Q.
TI Microstructure and rheology of a flow-induced structured phase in
   wormlike micellar solutions
SO PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF
   AMERICA
LA English
DT Article
DE microfluidics; microrheology; mesh size
ID VISCOELASTIC SURFACTANT SOLUTIONS; DIFFUSING WAVE SPECTROSCOPY;
   CETYLTRIMETHYLAMMONIUM BROMIDE; AQUEOUS-MEDIA; CONCENTRATION
   FLUCTUATIONS; DETERGENT MOLECULES; SODIUM-SALICYLATE; INDUCED GELATION;
   LIVING POLYMERS; COMPLEX FLUIDS
AB Surfactant molecules can self-assemble into various morphologies under proper combinations of ionic strength, temperature, and flow conditions. At equilibrium, wormlike micelles can transition from entangled to branched and multiconnected structures with increasing salt concentration. Under certain flow conditions, micellar structural transitions follow different trajectories. In this work, we consider the flow of two semidilute wormlike micellar solutions through microposts, focusing on their microstructural and rheological evolutions. Both solutions contain cetyltrimethylammonium bromide and sodium salicylate. One is weakly viscoelastic and shear thickening, whereas the other is strongly viscoelastic and shear thinning. When subjected to strain rates of similar to 10(3) s(-1) and strains of similar to 10(3), we observe the formation of a stable flow-induced structured phase (FISP), with entangled, branched, and multiconnected micellar bundles, as evidenced by electron microscopy. The high stretching and flow alignment in the microposts enhance the flexibility and lower the bending modulus of the wormlike micelles. As flexible micelles flow through the microposts, it becomes energetically favorable to minimize the number of end caps while concurrently promoting the formation of cross-links. The presence of spatial confinement and extensional flow also enhances entropic fluctuations, lowering the energy barrier between states, thus increasing transition frequencies between states and enabling FISP formation. Whereas the rheological properties (zero-shear viscosity, plateau modulus, and stress relaxation time) of the shear-thickening precursor are smaller than those of the FISP, those of the shear-thinning precursor are several times larger than those of the FISP. This rheological property variation stems from differences in the structural evolution from the precursor to the FISP.
C1 [Cardiel, Joshua J.; Dubash, Neville; Zhao, Ya; Cheung, Perry; Shen, Amy Q.] Univ Washington, Dept Mech Engn, Seattle, WA 98195 USA.
   [Dohnalkova, Alice C.] Pacific NW Natl Lab, Environm Mol Sci Lab, Richland, WA 99352 USA.
RP Shen, AQ (reprint author), Univ Washington, Dept Mech Engn, Seattle, WA 98195 USA.
EM amyshen@uw.edu
RI Shen, Amy/B-5981-2015
OI Shen, Amy/0000-0002-1222-6264
FU Environmental Molecular Sciences Laboratory at the Pacific Northwest
   National Laboratory [PNNL-EMSL-39946]; National Science Foundation
   Division of Chemical, Bioengineering, Environmental, and Transport
   Systems [0852471]; Consejo Nacional de Ciencia y Tecnologia
FX We thank Professor Gerry Fuller and Professor Eliot Fried for fruitful
   discussions. The EM was performed at the Environmental Molecular
   Sciences Laboratory at the Pacific Northwest National Laboratory (Grant
   PNNL-EMSL-39946). This study was supported by National Science
   Foundation Division of Chemical, Bioengineering, Environmental, and
   Transport Systems Grant 0852471 (to A. Q. S.). J.J.C. was supported by a
   Consejo Nacional de Ciencia y Tecnologia PhD fellowship.
NR 63
TC 25
Z9 25
U1 6
U2 79
PU NATL ACAD SCIENCES
PI WASHINGTON
PA 2101 CONSTITUTION AVE NW, WASHINGTON, DC 20418 USA
SN 0027-8424
J9 P NATL ACAD SCI USA
JI Proc. Natl. Acad. Sci. U. S. A.
PD APR 30
PY 2013
VL 110
IS 18
BP E1653
EP E1660
DI 10.1073/pnas.1215353110
PG 8
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA 140UV
UT WOS:000318682300003
PM 23569247
ER

PT J
AU Chen, CC
   Sentef, M
   Kung, YF
   Jia, CJ
   Thomale, R
   Moritz, B
   Kampf, AP
   Devereaux, TP
AF Chen, C. -C.
   Sentef, M.
   Kung, Y. F.
   Jia, C. J.
   Thomale, R.
   Moritz, B.
   Kampf, A. P.
   Devereaux, T. P.
TI Doping evolution of the oxygen K-edge x-ray absorption spectra of
   cuprate superconductors using a three-orbital Hubbard model
SO PHYSICAL REVIEW B
LA English
DT Article
ID COPPER-OXIDE SUPERCONDUCTORS; ELECTRONIC-STRUCTURE; CORRELATED SYSTEMS;
   DOPED HOLES; CUO2 PLANE; STATES; LA2-XSRXCUO4; EXCITATIONS; DEPENDENCE;
   TEMPERATURE
AB We study oxygen K-edge x-ray absorption spectroscopy (XAS) and investigate the validity of the Zhang-Rice singlet (ZRS) picture in overdoped cuprate superconductors. Using large-scale exact diagonalization of the three-orbital Hubbard model, we observe the effect of strong correlations manifesting in a dynamical spectral weight transfer from the upper Hubbard band to the ZRS band. The quantitative agreement between theory and experiment highlights an additional spectral weight reshuffling due to core-hole interaction. Our results confirm the important correlated nature of the cuprates and elucidate the changing orbital character of the low-energy quasiparticles, but also demonstrate the continued relevance of the ZRS even in the overdoped region.
C1 [Chen, C. -C.; Sentef, M.; Kung, Y. F.; Jia, C. J.; Moritz, B.; Devereaux, T. P.] SLAC Natl Accelerator Lab, Stanford Inst Mat & Energy Sci, Menlo Pk, CA 94025 USA.
   [Chen, C. -C.] Argonne Natl Lab, Adv Photon Source, Lemont, IL 60439 USA.
   [Kung, Y. F.; Thomale, R.] Stanford Univ, Dept Phys, Stanford, CA 94305 USA.
   [Jia, C. J.] Stanford Univ, Dept Appl Phys, Stanford, CA 94305 USA.
   [Thomale, R.] Ecole Polytech Fed Lausanne, Inst Theorie Phenomenes Phys, CH-1015 Lausanne, Switzerland.
   [Thomale, R.] Univ Wurzburg, Inst Theoret Phys & Astrophys, D-97074 Wurzburg, Germany.
   [Moritz, B.] Univ N Dakota, Dept Phys & Astrophys, Grand Forks, ND 58202 USA.
   [Moritz, B.] No Illinois Univ, Dept Phys, De Kalb, IL 60115 USA.
   [Kampf, A. P.] Univ Augsburg, Inst Phys, Ctr Elect Correlat & Magnetism, D-86135 Augsburg, Germany.
RP Chen, CC (reprint author), SLAC Natl Accelerator Lab, Stanford Inst Mat & Energy Sci, Menlo Pk, CA 94025 USA.
RI Thomale, Ronny/A-3568-2012; Sentef, Michael/L-5717-2013; Moritz,
   Brian/D-7505-2015; 
OI Thomale, Ronny/0000-0002-3979-8836; Sentef, Michael/0000-0002-7946-0282;
   Moritz, Brian/0000-0002-3747-8484; Jia, Chunjing/0000-0001-7999-1932
FU U.S. Department of Energy (DOE), Basic Energy Sciences, Office of
   Science [DE-AC02-76SF00515, DE-AC02-06CH11357]; Aneesur Rahman
   Postdoctoral Fellowship at ANL; Department of Defense (DoD) through the
   National Defense Science & Engineering Graduate Fellowship (NDSEG)
   Program; Stanford Graduate Fellowships; SITP Fellowship at Stanford
   University; DFG [TRR 80]; US DOE [DE-AC02-05CH11231];  [SPP 1458/1]
FX The authors acknowledge discussions with M. A. van Veenendaal, J.
   Fernandez-Rodriguez, and C.-Y. Mou. This work is supported by the U.S.
   Department of Energy (DOE), Basic Energy Sciences, Office of Science,
   under Contracts No. DE-AC02-76SF00515 and No. DE-AC02-06CH11357. C. C.
   C. is supported by the Aneesur Rahman Postdoctoral Fellowship at ANL.
   Y.F.K. was supported by the Department of Defense (DoD) through the
   National Defense Science & Engineering Graduate Fellowship (NDSEG)
   Program. C. J. J. is supported by the Stanford Graduate Fellowships. R.
   T. is supported by an SITP Fellowship at Stanford University and SPP
   1458/1. A. P. K. acknowledges support from the DFG through TRR 80. The
   simulations were performed on the Hopper peta-flop Cray XE6 system at
   NERSC, supported by the US DOE under Contract No. DE-AC02-05CH11231.
NR 61
TC 8
Z9 8
U1 0
U2 28
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD APR 30
PY 2013
VL 87
IS 16
AR 165144
DI 10.1103/PhysRevB.87.165144
PG 6
WC Physics, Condensed Matter
SC Physics
GA 138PO
UT WOS:000318520900008
ER

PT J
AU Hong, T
   Zhu, LY
   Ke, X
   Garlea, VO
   Qiu, Y
   Nambu, Y
   Yoshizawa, H
   Zhu, M
   Granroth, GE
   Savici, AT
   Gai, Z
   Zhou, HD
AF Hong, Tao
   Zhu, L. Y.
   Ke, X.
   Garlea, V. O.
   Qiu, Y.
   Nambu, Y.
   Yoshizawa, H.
   Zhu, M.
   Granroth, G. E.
   Savici, A. T.
   Gai, Zheng
   Zhou, H. D.
TI Structural and magnetic properties in the quantum S=1/2 dimer system
   Ba-3(Cr1-xVx)(2)O-8 with site disorder
SO PHYSICAL REVIEW B
LA English
DT Article
ID BOSE-EINSTEIN CONDENSATION; SINGLET-GROUND-STATE; CHOPPER SPECTROMETER;
   NEUTRON-SCATTERING; SPIN GAP; TLCUCL3; TRANSITION; CUGEO3
AB We report a comprehensive study of dc susceptibility, specific-heat, neutron-diffraction, and inelastic neutron-scattering measurements on polycrystalline Ba-3(Cr1-xVx)(2)O-8 samples, where x = 0, 0.06, 0.15, and 0.53. A Jahn-Teller structure transition occurs for x = 0, 0.06, and 0.15 samples, and the transition temperature is reduced upon vanadium substitution from 70(2) K at x = 0 to 60(2) K at x = 0.06 and 0.15. The structure becomes less distorted as x increases, and such transition disappears at x = 0.53. The observed magnetic excitation spectrum indicates that the singlet ground state remains unaltered and spin-gap energy Delta = 1.3(1) meV is identical within the instrument resolution for all x. In addition, the dispersion bandwidth W decreases with increase of x. At x = 0.53, W is reduced to 1.4(1) meV from 2.0(1) meV at x = 0. DOI: 10.1103/PhysRevB.87.144427
C1 [Hong, Tao; Ke, X.; Garlea, V. O.; Granroth, G. E.] Oak Ridge Natl Lab, Quantum Condensed Matter Div, Oak Ridge, TN 37831 USA.
   [Zhu, L. Y.] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA.
   [Ke, X.; Zhu, M.] Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA.
   [Qiu, Y.] NIST, Ctr Neutron Res, Gaithersburg, MD 20899 USA.
   [Qiu, Y.] Univ Maryland, Dept Mat & Engn, College Pk, MD 20742 USA.
   [Nambu, Y.] Tohoku Univ, Inst Multidisciplinary Res Adv Mat, Sendai, Miyagi 9808577, Japan.
   [Yoshizawa, H.] Univ Tokyo, Inst Solid State Phys, Neutron Sci Lab, Tokai, Ibaraki 3191106, Japan.
   [Savici, A. T.] Oak Ridge Natl Lab, Neutron Data Anal & Visualizat Div, Oak Ridge, TN 37831 USA.
   [Gai, Zheng] Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Oak Ridge, TN 37831 USA.
   [Zhou, H. D.] Florida State Univ, Natl High Magnet Field Lab, Tallahassee, FL 32306 USA.
   [Zhou, H. D.] Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA.
RP Hong, T (reprint author), Oak Ridge Natl Lab, Quantum Condensed Matter Div, Oak Ridge, TN 37831 USA.
EM hongt@ornl.gov
RI Nambu, Yusuke/C-3863-2012; Hong, Tao/F-8166-2010; Gai,
   Zheng/B-5327-2012; Granroth, Garrett/G-3576-2012; Savici,
   Andrei/F-2790-2013; Garlea, Vasile/A-4994-2016; Zhou,
   Haidong/O-4373-2016
OI Nambu, Yusuke/0000-0003-1167-7124; Hong, Tao/0000-0002-0161-8588; Gai,
   Zheng/0000-0002-6099-4559; Granroth, Garrett/0000-0002-7583-8778;
   Savici, Andrei/0000-0001-5127-8967; Garlea, Vasile/0000-0002-5322-7271; 
FU Scientific User Facilities Division, Office of Basic Energy Sciences, US
   Department of Energy; US Department of Energy, Office of Science, Office
   of Basic Energy Sciences [DE-AC02-06CH11357]; NSF [DMR-0944772]
FX T.H. would like to thank A. Huq for the initial measurement at an early
   stage and G. W. Chern for helpful discussion. Research conducted at
   Neutron Sciences Directorate and the Center for Nanophase Materials
   Sciences, Oak Ridge National Laboratory, was sponsored by the Scientific
   User Facilities Division, Office of Basic Energy Sciences, US Department
   of Energy. Work at Argonne is supported by the US Department of Energy,
   Office of Science, Office of Basic Energy Sciences, under Contract No.
   DE-AC02-06CH11357. Work at NIST is supported by the NSF under Agreement
   No. DMR-0944772.
NR 44
TC 2
Z9 2
U1 1
U2 12
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 2469-9950
EI 2469-9969
J9 PHYS REV B
JI Phys. Rev. B
PD APR 30
PY 2013
VL 87
IS 14
AR 144427
DI 10.1103/PhysRevB.87.144427
PG 9
WC Physics, Condensed Matter
SC Physics
GA 138LV
UT WOS:000318511000006
ER

PT J
AU Liu, YH
   Xiong, J
   Haraldsen, JT
   Yan, L
   Balatsky, AV
   Jia, QX
   Taylor, AJ
   Yarotski, D
AF Liu, Y. H.
   Xiong, J.
   Haraldsen, J. T.
   Yan, L.
   Balatsky, A. V.
   Jia, Q. X.
   Taylor, A. J.
   Yarotski, D.
TI Tuning the electronic properties of ultrathin La0.7Sr0.3MnO3 films by
   interfacing with superconducting EuBa2Cu3O7-delta
SO PHYSICAL REVIEW B
LA English
DT Article
ID TEMPERATURE; MANGANITE; TRANSITION; LAYERS; OXIDE
AB Interfaces between transition-metal oxides provide an intriguing platform for modifying the ground states of single constituent materials and creating desired functionalities for applications in oxide-based electronics. Here, we demonstrate that the metallic and ferromagnetic responses of La0.7Sr0.3MnO3 (LSMO) films with thicknesses less than 4 nm, which are insulating when grown directly on SrTiO3 substrates, can be restored through interfacing with a high-temperature cuprate superconductor EuBa2Cu3O7-delta (EBCO). We carried out scanning tunneling microscopy and spectroscopy measurements on the electronic structure of LSMO/EBCO bilayers with thickness of LSMO layer varying from 2 to 7 nm. Our results suggest that the transfer of holes from EBCO to LSMO, caused by the difference in their work functions, is responsible for driving LSMO film with thickness of only five unit cells to the metallic state.
C1 [Liu, Y. H.; Xiong, J.; Haraldsen, J. T.; Yan, L.; Balatsky, A. V.; Jia, Q. X.; Taylor, A. J.; Yarotski, D.] Los Alamos Natl Lab, Ctr Integrated Nanotechnol, Los Alamos, NM 87545 USA.
   [Haraldsen, J. T.; Balatsky, A. V.] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA.
   [Xiong, J.] Univ Elect Sci & Technol China, State Key Lab Elect Thin Films & Integrated Devic, Chengdu 610054, Peoples R China.
RP Liu, YH (reprint author), Los Alamos Natl Lab, Ctr Integrated Nanotechnol, POB 1663, Los Alamos, NM 87545 USA.
EM yhaoliu76@gmail.com; dzmitry@lanl.gov
RI Jia, Q. X./C-5194-2008; Haraldsen, Jason/B-9809-2012; Yarotski,
   Dmitry/G-4568-2010
OI Haraldsen, Jason/0000-0002-8641-5412; 
FU Laboratory Directed Research and Development program of Los Alamos
   National Laboratory [DE-AC52-06NA25396]
FX The authors are thankful to S. A. Trugman and J. X. Zhu for useful
   discussions and to J. Kim for low-temperature MFM measurements. This
   work was performed in the Center for Integrated Nanotechnologies and
   supported by the Laboratory Directed Research and Development program of
   Los Alamos National Laboratory under Contract No. DE-AC52-06NA25396.
NR 32
TC 1
Z9 1
U1 0
U2 40
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 2469-9950
EI 2469-9969
J9 PHYS REV B
JI Phys. Rev. B
PD APR 30
PY 2013
VL 87
IS 16
AR 165140
DI 10.1103/PhysRevB.87.165140
PG 6
WC Physics, Condensed Matter
SC Physics
GA 138PO
UT WOS:000318520900004
ER

PT J
AU Ramazanoglu, M
   Lamsal, J
   Tucker, GS
   Yan, JQ
   Calder, S
   Guidi, T
   Perring, T
   McCallum, RW
   Lograsso, TA
   Kreyssig, A
   Goldman, AI
   McQueeney, RJ
AF Ramazanoglu, M.
   Lamsal, J.
   Tucker, G. S.
   Yan, J. -Q.
   Calder, S.
   Guidi, T.
   Perring, T.
   McCallum, R. W.
   Lograsso, T. A.
   Kreyssig, A.
   Goldman, A. I.
   McQueeney, R. J.
TI Two-dimensional magnetic interactions in LaFeAsO
SO PHYSICAL REVIEW B
LA English
DT Article
ID SUPERCONDUCTIVITY; LA2CUO4; PURE
AB Inelastic neutron scattering measurements demonstrate that the magnetic interactions in antiferromagnetic LaFeAsO are two dimensional. Spin-wave velocities within the Fe layer and the magnitude of the spin gap are similar to the AFe(2)As(2) based materials. However, the ratio of interlayer and intralayer exchange is found to be less than similar to 10(-4) in LaFeAsO, very similar to the cuprates, and similar to 100 times smaller than that found in AFe(2)As(2) compounds. The results suggest that the effective dimensionality of the magnetic system is highly variable in the parent compounds of the iron arsenides and weak three-dimensional interactions may limit the maximum attainable superconducting T-c. DOI: 10.1103/PhysRevB.87.140509
C1 [Ramazanoglu, M.; Lamsal, J.; Tucker, G. S.; McCallum, R. W.; Lograsso, T. A.; Kreyssig, A.; Goldman, A. I.; McQueeney, R. J.] Ames Lab, Ames, IA 50011 USA.
   [Ramazanoglu, M.; Lamsal, J.; Tucker, G. S.; McCallum, R. W.; Lograsso, T. A.; Kreyssig, A.; Goldman, A. I.; McQueeney, R. J.] Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA.
   [Yan, J. -Q.; Calder, S.] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
   [Guidi, T.; Perring, T.] Rutherford Appleton Lab, ISIS Facil, Didcot OX11 OQX, Oxon, England.
RP Ramazanoglu, M (reprint author), Ames Lab, Ames, IA 50011 USA.
RI Tucker, Gregory/L-9357-2013; McQueeney, Robert/A-2864-2016; 
OI Tucker, Gregory/0000-0002-2787-8054; McQueeney,
   Robert/0000-0003-0718-5602; Calder, Stuart/0000-0001-8402-3741
FU US Department of Energy, Office of Basic Energy Science, Division of
   Materials Sciences and Engineering [DE-AC02-07CH11358]; US Department of
   Energy, Office of Basic Energy Sciences, Scientific User Facilities
   Division
FX R.J.M. would like to thank D. C. Johnston and V. Antropov for useful
   discussions. The work at Ames Laboratory was supported by the US
   Department of Energy, Office of Basic Energy Science, Division of
   Materials Sciences and Engineering under Contract No. DE-AC02-07CH11358.
   Work at Oak Ridge National Laboratory is supported by US Department of
   Energy, Office of Basic Energy Sciences, Scientific User Facilities
   Division.
NR 24
TC 13
Z9 13
U1 0
U2 26
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 2469-9950
EI 2469-9969
J9 PHYS REV B
JI Phys. Rev. B
PD APR 30
PY 2013
VL 87
IS 14
AR 140509
DI 10.1103/PhysRevB.87.140509
PG 5
WC Physics, Condensed Matter
SC Physics
GA 138LV
UT WOS:000318511000001
ER

PT J
AU Stanev, V
   Littlewood, PB
AF Stanev, Valentin
   Littlewood, Peter B.
TI Nematicity driven by hybridization in iron-based superconductors
SO PHYSICAL REVIEW B
LA English
DT Article
ID ARSENIDE SUPERCONDUCTOR; ELECTRONIC-STRUCTURE; ANDERSON MODEL;
   KONDO-LATTICE; 1/N EXPANSION; PNICTIDES; TRANSITION; ANISOTROPY;
   ITINERANT; STATE
AB In this Rapid Communication, we study an effective model for the normal state of iron-based superconductors. It has separate but interacting itinerant and localized degrees of freedom, originating from the d(xz) and d(yz) and from the d(xy) iron orbitals, respectively. At low temperatures, below a mean-field phase transition, these different states condense together in an excitonic order parameter. We show that, at even lower temperatures, after another phase transition, this ordered state can spontaneously break the C-4 lattice symmetry and become nematic. We propose this mechanism as an explanation of the tendency towards nematicity observed in several iron-based compounds.
C1 [Stanev, Valentin] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA.
   [Littlewood, Peter B.] Argonne Natl Lab, Argonne, IL 60439 USA.
RP Stanev, V (reprint author), Argonne Natl Lab, Div Mat Sci, 9700 S Cass Ave, Argonne, IL 60439 USA.
RI Littlewood, Peter/B-7746-2008
FU US DOE, Office of Basic Energy Sciences [DE-AC02-06CH11357]; Center for
   Emergent Superconductivity, a DOE Energy Frontier Research Center
   [DE-AC0298CH1088]
FX We gratefully acknowledge insightful discussions with R. Flint, J. van
   Wezel, and Z. Tesanovic. This work was supported by the US DOE, Office
   of Basic Energy Sciences, under Contract No. DE-AC02-06CH11357 and the
   Center for Emergent Superconductivity, a DOE Energy Frontier Research
   Center, under Contract No. DE-AC0298CH1088.
NR 47
TC 21
Z9 21
U1 0
U2 31
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD APR 30
PY 2013
VL 87
IS 16
AR 161122
DI 10.1103/PhysRevB.87.161122
PG 5
WC Physics, Condensed Matter
SC Physics
GA 138PO
UT WOS:000318520900001
ER

PT J
AU Bunce, M
   Regan, PH
   Werner, V
   Beausang, CW
   Anagnostatou, V
   Bowry, M
   Casperson, RJ
   Chen, D
   Cooper, N
   Goddard, PM
   Hughes, RO
   Ilie, G
   Mason, PJR
   Pauerstein, B
   Reed, MW
   Ross, TJ
   Simpson, EC
AF Bunce, M.
   Regan, P. H.
   Werner, V.
   Beausang, C. W.
   Anagnostatou, V.
   Bowry, M.
   Casperson, R. J.
   Chen, D.
   Cooper, N.
   Goddard, P. M.
   Hughes, R. O.
   Ilie, G.
   Mason, P. J. R.
   Pauerstein, B.
   Reed, M. W.
   Ross, T. J.
   Simpson, E. C.
TI High-spin study of the shell model nucleus Y-88(49)
SO PHYSICAL REVIEW C
LA English
DT Article
ID MULTIPLETS
AB The near-yrast structure of the near-magic, odd-odd nucleus, Y-88(39)49, has been studied into the high-spin regime. Investigations were performed at the Wright Nuclear Structure Laboratory, Yale University, using the Ge-74(O-18, p3n) and Ge-76(O-18, p5n) fusion-evaporation reactions at beam energies of 60 and 90 MeV, respectively. Gamma-ray energy coincidence analyses using both double (gamma(2)) and triple (gamma(3)) fold coincidences, together with angular correlation measurements, have been used to extend the previously reported level scheme to an excitation energy of 8.6 MeV and a spin and parity of 19((-)). The presented level scheme is compared with predictions of a truncated valence space shell-model calculation, which assumes an inert Ni-56 core with proton and neutron excitations allowed within the f(5/2), p(3/2), p(1/2), and g(9/2) single-particle states. The shell-model calculations show a reasonable comparison with the experimental data for the yrast, positive-parity states up to spin 18 (h) over bar, with larger variations evident for negative-parity states with spins greater than 16 (h) over bar. In spite of a significant increase in angular momentum input associated with the thin target Ge-76(O-18, p5n) reaction channel, as compared to the backed target data using the Ge-74 target, no additional discrete states were identified in the former data set, suggesting that the level scheme for this nucleus fragments significantly above the observed states, possibly indicating cross-shell excitations becoming dominant for I > 19 (h) over bar.
C1 [Bunce, M.; Regan, P. H.; Anagnostatou, V.; Bowry, M.; Goddard, P. M.; Mason, P. J. R.; Reed, M. W.; Ross, T. J.; Simpson, E. C.] Univ Surrey, Dept Phys, Guildford GU2 7XH, Surrey, England.
   [Werner, V.; Cooper, N.; Ilie, G.] Yale Univ, Wright Nucl Struct Lab, New Haven, CT 06520 USA.
   [Beausang, C. W.; Chen, D.; Hughes, R. O.; Pauerstein, B.; Ross, T. J.] Univ Richmond, Dept Phys, Richmond, VA 23173 USA.
   [Casperson, R. J.] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA.
   [Ilie, G.] Natl Inst Phys & Nucl Engn, R-77125 Bucharest, Romania.
   [Reed, M. W.] Australian Natl Univ, Res Sch Phys & Engn, Dept Nucl Phys, Canberra, ACT 0200, Australia.
RP Bunce, M (reprint author), Univ Surrey, Dept Phys, Guildford GU2 7XH, Surrey, England.
EM michael.r.bunce@gmail.com
RI Werner, Volker/C-1181-2017
OI Werner, Volker/0000-0003-4001-0150
FU Science and Technology Facilities Council (STFC), United Kingdom
   [EP/D077133/1]; U.S. Department of Energy [DE-FG02-91ER40609,
   DE-FG52-06NA26206, DE-FG02-05ER41379]
FX The author would like to acknowledge the excellent work of all the
   technical staff at the Wright Nuclear Structure Laboratory. This work is
   supported by Science and Technology Facilities Council (STFC), United
   Kingdom, under Grant No. EP/D077133/1, and the U.S. Department of Energy
   under Grants No. DE-FG02-91ER40609, No. DE-FG52-06NA26206, and No.
   DE-FG02-05ER41379.
NR 16
TC 8
Z9 8
U1 0
U2 6
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0556-2813
J9 PHYS REV C
JI Phys. Rev. C
PD APR 30
PY 2013
VL 87
IS 4
AR 044337
DI 10.1103/PhysRevC.87.044337
PG 8
WC Physics, Nuclear
SC Physics
GA 138RK
UT WOS:000318525900001
ER

PT J
AU Albacete, JL
   Dumitru, A
   Marquet, C
AF Albacete, Javier L.
   Dumitru, Adrian
   Marquet, Cyrille
TI THE INITIAL STATE OF HEAVY ION COLLISIONS
SO INTERNATIONAL JOURNAL OF MODERN PHYSICS A
LA English
DT Article
DE Heavy ion collisions; color glass condensate; high energy QCD
ID COLOR GLASS CONDENSATE; GLUON DISTRIBUTION-FUNCTIONS; HADRON-PRODUCTION;
   SMALL-X; P PLUS; MULTIPLICITY DISTRIBUTIONS; AZIMUTHAL CORRELATIONS;
   TRANSVERSE-MOMENTUM; NUCLEAR COLLISIONS; CGC PREDICTIONS
AB We present a brief review of recent theoretical developments and related phenomenological approaches for understanding the initial state of heavy ion collisions, with emphasis on the Color Glass Condensate formalism.
C1 [Albacete, Javier L.] Univ Granada, CAFPE, E-18071 Granada, Spain.
   [Albacete, Javier L.] Univ Granada, Dept Fis Teor & Cosmos, E-18071 Granada, Spain.
   [Dumitru, Adrian] Brookhaven Natl Lab, RIKEN BNL Res Ctr, Upton, NY 11973 USA.
   [Dumitru, Adrian] CUNY Bernard M Baruch Coll, Dept Nat Sci, New York, NY 10010 USA.
   [Dumitru, Adrian] CUNY Grad Sch & Univ Ctr, New York, NY 10016 USA.
   [Marquet, Cyrille] Ecole Polytech, CNRS, Ctr Phys Theor, F-91128 Palaiseau, France.
RP Albacete, JL (reprint author), Univ Granada, CAFPE, E-18071 Granada, Spain.
EM albacete@ugr.es; adrian.dumitru@baruch.cuny.edu; cyrille.marquet@cern.ch
RI Lopez Albacete, Javier/D-9272-2016
OI Lopez Albacete, Javier/0000-0001-8345-6123
FU Ramon y Cajal fellowship; DOE Office of Nuclear Physics
   [DE-FG02-09ER41620]; City University of New York through the PSC-CUNY
   Research Award Program [65041-0043]
FX The work of J. L. Albacete is supported by a Ramon y Cajal fellowship.
   A. Dumitru is supported by the DOE Office of Nuclear Physics through
   Grant No. DE-FG02-09ER41620 and by The City University of New York
   through the PSC-CUNY Research Award Program, grant 65041-0043.
NR 129
TC 28
Z9 28
U1 0
U2 3
PU WORLD SCIENTIFIC PUBL CO PTE LTD
PI SINGAPORE
PA 5 TOH TUCK LINK, SINGAPORE 596224, SINGAPORE
SN 0217-751X
EI 1793-656X
J9 INT J MOD PHYS A
JI Int. J. Mod. Phys. A
PD APR 30
PY 2013
VL 28
IS 11
SI SI
AR 1340010
DI 10.1142/S0217751X13400101
PG 32
WC Physics, Nuclear; Physics, Particles & Fields
SC Physics
GA 133ZR
UT WOS:000318179900002
ER

PT J
AU Gale, C
   Jeon, S
   Schenke, B
AF Gale, Charles
   Jeon, Sangyong
   Schenke, Bjoern
TI HYDRODYNAMIC MODELING OF HEAVY-ION COLLISIONS
SO INTERNATIONAL JOURNAL OF MODERN PHYSICS A
LA English
DT Article
DE Heavy-ion collisions; relativistic fluid dynamics
ID QUARK-GLUON PLASMA; TRANSIENT RELATIVISTIC THERMODYNAMICS;
   NUCLEUS-NUCLEUS COLLISIONS; EQUATION-OF-STATE; HIGH-DENSITY QCD;
   ELLIPTIC FLOW; TRANSPORT-COEFFICIENTS; KINETIC-THEORY; LATTICE QCD;
   THERMALIZATION
AB We review progress in the hydrodynamic description of heavy-ion collisions, focusing on recent developments in modeling the fluctuating initial state and event-by-event viscous hydrodynamic simulations. We discuss how hydrodynamics can be used to extract information on fundamental properties of quantum chromodynamics from experimental data, and review successes and challenges of the hydrodynamic framework.
C1 [Gale, Charles; Jeon, Sangyong] McGill Univ, Dept Phys, Montreal, PQ H3A 2T8, Canada.
   [Schenke, Bjoern] Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA.
RP Gale, C (reprint author), McGill Univ, Dept Phys, 3600 Univ St, Montreal, PQ H3A 2T8, Canada.
EM bschenke@quark.phy.bnl.gov
FU US Department of Energy under DOE [DE-AC02-98CH10886]; Natural Sciences
   and Engineering Research Council of Canada
FX We thank Raju Venugopalan for helpful comments on the manuscript and
   discussions. This work was supported in part by the US Department of
   Energy under DOE Contract No. DE-AC02-98CH10886 and in part by the
   Natural Sciences and Engineering Research Council of Canada.
NR 203
TC 156
Z9 159
U1 0
U2 13
PU WORLD SCIENTIFIC PUBL CO PTE LTD
PI SINGAPORE
PA 5 TOH TUCK LINK, SINGAPORE 596224, SINGAPORE
SN 0217-751X
EI 1793-656X
J9 INT J MOD PHYS A
JI Int. J. Mod. Phys. A
PD APR 30
PY 2013
VL 28
IS 11
SI SI
AR 1340011
DI 10.1142/S0217751X13400113
PG 28
WC Physics, Nuclear; Physics, Particles & Fields
SC Physics
GA 133ZR
UT WOS:000318179900003
ER

PT J
AU Mocsy, A
   Petreczky, P
   Strickland, M
AF Mocsy, Agnes
   Petreczky, Peter
   Strickland, Michael
TI QUARKONIA IN THE QUARK GLUON PLASMA
SO INTERNATIONAL JOURNAL OF MODERN PHYSICS A
LA English
DT Article
DE Quarkonium; quark gluon plasma; heavy ion collisions
ID NUCLEUS-NUCLEUS COLLISIONS; HEAVY-ION COLLISIONS; MESON SPECTRAL
   FUNCTIONS; COLOR GLASS CONDENSATE; SU(2) GAUGE-THEORY;
   J-PSI-SUPPRESSION; QCD SUM-RULES; HIGH-TEMPERATURE; FINITE-TEMPERATURE;
   LATTICE QCD
AB In this paper, we review recent progress toward understanding the nature of quarkonia in the quark gluon plasma. We review the theory necessary to understand the melting of bound states due to color-screening, including lattice results for the heavy quark potential, lattice results on the correlation functions related to the relevant spectral functions, and the emergence of a complex-valued potential in high-temperature quantum chromo-dynamics. We close with a brief survey of phenomenological models of quarkonium suppression in relativistic heavy ion collisions.
C1 [Mocsy, Agnes] Pratt Inst, Dept Math & Sci, Brooklyn, NY 11205 USA.
   [Mocsy, Agnes; Petreczky, Peter] Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA.
   [Strickland, Michael] Kent State Univ, Dept Phys, Kent, OH 44242 USA.
RP Mocsy, A (reprint author), Pratt Inst, Dept Math & Sci, Brooklyn, NY 11205 USA.
EM amocsy@pratt.edu
FU U.S. Department of Energy [DE-AC02-98CH10886]; NSF [PHY-1068765]
FX The work of P. Petreczky was supported by the U.S. Department of Energy
   under Contract No. DE-AC02-98CH10886. M. Strickland was supported by NSF
   grant No. PHY-1068765.
NR 190
TC 33
Z9 33
U1 1
U2 5
PU WORLD SCIENTIFIC PUBL CO PTE LTD
PI SINGAPORE
PA 5 TOH TUCK LINK, SINGAPORE 596224, SINGAPORE
SN 0217-751X
J9 INT J MOD PHYS A
JI Int. J. Mod. Phys. A
PD APR 30
PY 2013
VL 28
IS 11
SI SI
AR 1340012
DI 10.1142/S0217751X13400125
PG 38
WC Physics, Nuclear; Physics, Particles & Fields
SC Physics
GA 133ZR
UT WOS:000318179900004
ER

PT J
AU Richter, AG
   Kuzmenko, I
AF Richter, Andrew G.
   Kuzmenko, Ivan
TI Using in Situ X-ray Reflectivity to Study Protein Adsorption on
   Hydrophilic and Hydrophobic Surfaces: Benefits and Limitations
SO LANGMUIR
LA English
DT Article
ID SELF-ASSEMBLED MONOLAYERS; SUPPORTED LIPID-BILAYERS; ATOMIC-FORCE
   MICROSCOPY; SOLID-LIQUID INTERFACE; SILICA-WATER INTERFACE; NEUTRON
   REFLECTION; DEUTERATED WATER; THIN-FILMS; LAYERS; LYSOZYME
AB We have employed in situ X-ray reflectivity (IXRR) to study the adsorption of a variety of proteins (lysozyme, cytochrome c, myoglobin, hemoglobin, serum albumin, and immunoglobulin G) on model hydrophilic (silicon oxide) and hydrophobic surfaces (octadecyltrichlorosilane self-assembled monolayers), evaluating this recently developed technique for its applicability in the area of biomolecular studies. We report herein the highest resolution depiction of adsorbed protein films, greatly improving on the precision of previous neutron reflectivity (NR) results and previous IXRR studies. We were able to perform complete scans in 5 min or less with the maximum momentum transfer of at least 0.52 angstrom(-1), allowing for some time-resolved information about the evolution of the protein film structure. The three smallest proteins (lysozyme, cytochrome c, and myoglobin) were seen to deposit as fully hydrated, nondenatured molecules onto hydrophilic surfaces, with indications of particular preferential orientations. Time evolution was observed for both lysozyme and myoglobin films. The larger proteins were not observed to deposit on the hydrophilic substrates, perhaps because of contrast limitations. On hydrophobic surfaces, all proteins were seen to denature extensively in a qualitatively similar way but with a rough trend that the larger proteins resulted in lower coverage. We have generated high-resolution electron density profiles of these denatured films, including capturing the growth of a lysozyme film. Because the solution interface of these denatured films is diffuse, IXRR cannot unambiguously determine the film extent and coverage, a drawback compared to NR. X-ray radiation damage was systematically evaluated, including the controlled exposure of protein films to high-intensity X-rays and exposure of the hydrophobic surface to X-rays before adsorption. Our analysis showed that standard measuring procedures used for XRR studies may lead to altered protein films; therefore, we used modified procedures to limit the influence of X-ray damage.
C1 [Richter, Andrew G.] Valparaiso Univ, Dept Phys & Astron, Valparaiso, IN 46383 USA.
   [Kuzmenko, Ivan] Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA.
RP Richter, AG (reprint author), Valparaiso Univ, Dept Phys & Astron, Valparaiso, IN 46383 USA.
EM andrew.richter@valpo.edu
FU U.S. DOE [DE-AC02-06CH11357]; Research Corporation for Science
   Advancement Cottrell College Science Award Program [CC 6294]
FX Use of the Advanced Photon Source, an Office of Science User Facility
   operated for the U.S. Department of Energy (DOE) Office of Science by
   Argonne National Laboratory, was supported by the U.S. DOE under
   contract no. DE-AC02-06CH11357. We thank the Research Corporation for
   Science Advancement Cottrell College Science Award Program, award number
   CC 6294, for funding this project.
NR 64
TC 20
Z9 20
U1 6
U2 64
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0743-7463
J9 LANGMUIR
JI Langmuir
PD APR 30
PY 2013
VL 29
IS 17
BP 5167
EP 5180
DI 10.1021/la3049532
PG 14
WC Chemistry, Multidisciplinary; Chemistry, Physical; Materials Science,
   Multidisciplinary
SC Chemistry; Materials Science
GA 136BC
UT WOS:000318333400010
PM 23586436
ER

PT J
AU Sasaki, DY
   Zawada, N
   Gilmore, SF
   Narasimmaraj, P
   Sanchez, MAA
   Stachowiak, JC
   Hayden, CC
   Wang, HL
   Parikh, AN
   Shreve, AP
AF Sasaki, Darryl Y.
   Zawada, Nicole
   Gilmore, Sean F.
   Narasimmaraj, Prihatha
   Sanchez, Mari Angelica A.
   Stachowiak, Jeanne C.
   Hayden, Carl C.
   Wang, Hsing-Lin
   Parikh, Atul N.
   Shreve, Andrew P.
TI Lipid Membrane Domains for the Selective Adsorption and Surface
   Patterning of Conjugated Polyelectrolytes
SO LANGMUIR
LA English
DT Article
ID SEQUENTIALLY ADSORBED MULTILAYERS; OPTICAL-PROPERTIES; GENE DELIVERY;
   BILAYERS; POLYMER; COMPLEXATION; CURVATURE; PH; THERMODYNAMICS;
   RECOGNITION
AB Conjugated polyelectrolytes (CPEs) are promising materials for generating optoelectronics devices under environmentally friendly processing conditions, but challenges remain to develop methods to define lateral features for improved junction interfaces and direct optoelectronic pathways. We describe here the potential to use a bottom-up approach that employs self-assembly in lipid membranes to form structures to template the selective adsorption of CPEs. Phase separation of gel phase anionic lipids and fluid phase phosphocholine lipids allowed the formation of negatively charged domain assemblies that selectively adsorb a cationic conjugated polyelectrolyte (P2). Spectroscopic studies found the adsorption of P2 to negatively charged membranes resulted in minimal structural change of the solution phase polymer but yielded an enhancement in fluorescence intensity (similar to 50%) due to loss of quenching pathways. Fluorescence microscopy, dynamic light scattering, and AFM imaging were used to characterize the polymer membrane interaction and the polymer-bound domain structures of the biphasic membranes. In addition to randomly formed circular gel phase domains, we also show that predefined features, such as straight lines, can be directed to form upon etched patterns on the substrate, thus providing potential routes toward the self-organization of optoelectronic architectures.
C1 [Sasaki, Darryl Y.; Zawada, Nicole; Narasimmaraj, Prihatha; Sanchez, Mari Angelica A.; Stachowiak, Jeanne C.; Hayden, Carl C.] Sandia Natl Labs, Livermore, CA 94550 USA.
   [Gilmore, Sean F.; Parikh, Atul N.] Univ Calif Davis, Davis, CA 95616 USA.
   [Wang, Hsing-Lin] Los Alamos Natl Lab, Los Alamos, NM 87544 USA.
   [Shreve, Andrew P.] Univ New Mexico, Albuquerque, NM 87131 USA.
   [Stachowiak, Jeanne C.] Univ Texas Austin, Austin, TX 78712 USA.
RP Sasaki, DY (reprint author), Sandia Natl Labs, Livermore, CA 94550 USA.
EM dysasak@sandia.gov
RI PARIKH, ATUL/D-2243-2014
OI PARIKH, ATUL/0000-0002-5927-4968
FU US Department of Energy, Office of Basic Energy Sciences, Division of
   Materials Science and Engineering; U.S. Department of Energy's National
   Nuclear Security Administration [DE-AC04-94AL85000]
FX The authors thank Dr. Jennifer Martinez for her insightful comments in
   the manuscript preparation and Dr. Julie Last for her guidance on the
   nanoscale imaging of the SLBs. This work was supported by the US
   Department of Energy, Office of Basic Energy Sciences, Division of
   Materials Science and Engineering. Sandia National Laboratories is a
   multiprogram laboratory managed and operated by Sandia Corporation, a
   wholly owned subsidiary of Lockheed Martin Corporation, for the U.S.
   Department of Energy's National Nuclear Security Administration under
   Contract DE-AC04-94AL85000.
NR 46
TC 3
Z9 3
U1 3
U2 68
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0743-7463
J9 LANGMUIR
JI Langmuir
PD APR 30
PY 2013
VL 29
IS 17
BP 5214
EP 5221
DI 10.1021/la400454c
PG 8
WC Chemistry, Multidisciplinary; Chemistry, Physical; Materials Science,
   Multidisciplinary
SC Chemistry; Materials Science
GA 136BC
UT WOS:000318333400015
PM 23544969
ER

PT J
AU Iaroshenko, O
   Rybalko, V
   Vinokur, VM
   Berlyand, L
AF Iaroshenko, O.
   Rybalko, V.
   Vinokur, V. M.
   Berlyand, L.
TI Vortex phase separation in mesoscopic superconductors
SO SCIENTIFIC REPORTS
LA English
DT Article
ID HIGH-TEMPERATURE SUPERCONDUCTORS; BOSON LOCALIZATION; COLUMNAR DEFECTS;
   CRYSTALS
AB We demonstrate that in mesoscopic type II superconductors with the lateral size commensurate with London penetration depth, the ground state of vortices pinned by homogeneously distributed columnar defects can form a hierarchical nested domain structure. Each domain is characterized by an average number of vortices trapped at a single pinning site within a given domain. Our study marks a radical departure from the current understanding of the ground state in disordered macroscopic systems and provides an insight into the interplay between disorder, vortex-vortex interaction, and confinement within finite system size. The observed vortex phase segregation implies the existence of the soliton solution for the vortex density in the finite superconductors and establishes a new class of nonlinear systems that exhibit the soliton phenomenon.
C1 [Iaroshenko, O.; Berlyand, L.] Penn State Univ, Dept Math, University Pk, PA 16802 USA.
   [Rybalko, V.] Natl Acad Sci Ukraine, B Verkin Inst Low Temp Phys & Engn, Div Math, UA-61103 Kharkov, Ukraine.
   [Vinokur, V. M.] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA.
RP Vinokur, VM (reprint author), Argonne Natl Lab, Div Mat Sci, 9700 S Cass Ave, Argonne, IL 60439 USA.
EM vinokour@anl.gov
FU U.S. Department of Energy Office of Science [DEAC02-06CH11357]; NSF
   [DMS-1106666]
FX The work of V. V. was supported by the U.S. Department of Energy Office
   of Science under the Contract No. DEAC02-06CH11357. The work of LB, VR
   and OI was supported by NSF grant DMS-1106666.
NR 22
TC 4
Z9 4
U1 2
U2 17
PU NATURE PUBLISHING GROUP
PI LONDON
PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND
SN 2045-2322
J9 SCI REP-UK
JI Sci Rep
PD APR 30
PY 2013
VL 3
AR 1758
DI 10.1038/srep01758
PG 5
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA 134AJ
UT WOS:000318181700006
ER

PT J
AU Zhu, HY
   Kwak, JH
   Peden, CHF
   Szanyi, J
AF Zhu, Haiyang
   Kwak, Ja Hun
   Peden, Charles H. F.
   Szanyi, Janos
TI In situ DRIFTS-MS studies on the oxidation of adsorbed NH3 by NOx over a
   Cu-SSZ-13 zeolite
SO CATALYSIS TODAY
LA English
DT Article; Proceedings Paper
CT Conference on Oprando IV - Recent Developments and Future Perspectives
   in Spectroscopy of Working Catalysts
CY APR 29-MAY 03, 2012
CL Brookhaven Natl Lab, New York, NY
SP ExxonMobil, Bruker, Shell, BaySpec, FEI, UOP, PerkinElmer, Elsevier, Catalysis Today, Avantes, Harrick, Hiden Analyt, Horiba, Princeton Instruments, VAT, VG Scienta, BNL, Photon Sci Directorate
HO Brookhaven Natl Lab
DE NH3 SCR of NOx; Cu-SSZ-13; In situ DRIFTS; Oxidant composition
ID SELECTIVE CATALYTIC-REDUCTION; EXCHANGED ZEOLITES; NITROGEN-OXIDES;
   NITRIC-OXIDE; AMMONIA; FTIR; SCR; MECHANISM; CU-ZSM-5
AB DRIFT spectroscopy combined with mass spectrometry was used to investigate the oxidation of adsorbed ammonia by NO2, NO + O-2 and NO2 + O-2 on a copper ion exchanged SSZ-13 (Cu-SSZ-13) zeolite. Compared with both NO2 and NO, the adsorption of ammonia is much stronger on the Cu-SSZ-13 zeolite. Two adsorbed ammonia species were found over the Cu-SSZ-13 zeolite studied here, notably ammonia on Bronsted acid sites (proton) and ammonia on Lewis acid sites (copper ions). These adsorbed ammonia species present different activity profiles and selectivity to N-2 during NH3 oxidation. The results obtained suggest that ammonia adsorbed onto copper ions in Cu-SSZ-13 is more active at low temperatures than proton-adsorbed NH3, and give rise to a higher selectivity to N-2. The formation of N2O is associated primarily with the reaction of NOx with proton-adsorbed NH3 via the formation and subsequent thermal decomposition of NH4NO3. Published by Elsevier B.V.
C1 [Zhu, Haiyang; Kwak, Ja Hun; Peden, Charles H. F.; Szanyi, Janos] Pacific NW Natl Lab, Inst Integrated Catalysis, Richland, WA 99354 USA.
RP Szanyi, J (reprint author), Pacific NW Natl Lab, Inst Integrated Catalysis, Richland, WA 99354 USA.
EM janos.szanyi@pnnl.gov
RI Kwak, Ja Hun/J-4894-2014; 
OI Peden, Charles/0000-0001-6754-9928
NR 22
TC 50
Z9 52
U1 5
U2 162
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0920-5861
J9 CATAL TODAY
JI Catal. Today
PD APR 30
PY 2013
VL 205
BP 16
EP 23
DI 10.1016/j.cattod.2012.08.043
PG 8
WC Chemistry, Applied; Chemistry, Physical; Engineering, Chemical
SC Chemistry; Engineering
GA 115DB
UT WOS:000316791700004
ER

PT J
AU Reina, TR
   Xu, WQ
   Ivanova, S
   Centeno, MA
   Hanson, J
   Rodriguez, JA
   Odriozola, JA
AF Ramirez Reina, Tomas
   Xu, Wenqian
   Ivanova, Svetlana
   Angel Centeno, Miguel
   Hanson, Jonathan
   Rodriguez, Jose A.
   Antonio Odriozola, Jose
TI In situ characterization of iron-promoted ceria-alumina gold catalysts
   during the water-gas shift reaction
SO CATALYSIS TODAY
LA English
DT Article; Proceedings Paper
CT Conference on Oprando IV - Recent Developments and Future Perspectives
   in Spectroscopy of Working Catalysts
CY APR 29-MAY 03, 2012
CL Brookhaven Natl Lab, New York, NY
SP ExxonMobil, Bruker, Shell, BaySpec, FEI, UOP, PerkinElmer, Elsevier, Catalysis Today, Avantes, Harrick, Hiden Analyt, Horiba, Princeton Instruments, VAT, VG Scienta, BNL, Photon Sci Directorate
HO Brookhaven Natl Lab
DE Gold catalyst; Iron oxide; Cerium oxide; In situ TR-XRD; In situ TR-XAS;
   Water-gas shift reaction
ID CO OXIDATION REACTIONS; ZN-MODIFIED CERIA; PREFERENTIAL OXIDATION;
   NANOPARTICLES; OXIDES; XANES; BEHAVIOR; SYSTEMS; AU; FE
AB In this work an in situ XRD and XANES study of two gold catalysts supported on iron-promoted ceria-alumina carriers was carried out during the water-gas shift reaction (WGS). The first catalyst, Au/CeO2-FeOx/Al2O3, was prepared using a commercial alumina support in order to obtain a Ce-Fe oxide solid solution and in the second one, Au/FeOx/CeO2-Al2O3, an iron oxide monolayer was deposited onto a ceria-alumina commercial support to promote its redox properties. Catalytic activities in the WGS were remarkably different for both systems. The catalytic activity of the Au/CeO2-FeOx/Al2O3 catalyst was higher than the one shown by the Au/FeOx/CeO2-Al2O3 catalyst that resulted active at much higher temperatures. In situ XRD demonstrates the formation of magnetite (Fe3O4) during the WGS reaction and the presence of big gold particles, ca. 21 nm in diameter, in the low-activity system. This in contrast to the high-activity system that shows undetectable gold nanoparticles and the absence of diffraction peaks corresponding to magnetite during the WGS. The data obtained using in situ XANES states that Ce4+ species undergo reduction to Ce3+ during the WGS for both catalysts, and also confirms that in the high-activity catalyst iron is just present as Fe3+ species while in the low-activity catalyst Fe3+ and Fe2+ coexist, resulting in iron spinel observed by XRD. These results allow us conclude that the Au/CeO2-Fe2O3/Al2O3 catalyst is a suitable catalyst for WGS when avoiding the formation of magnetite, in such a case Fe3+ species favors reduction and water splitting increasing the catalytic activity in the WGS reaction. (C) 2012 Elsevier B.V. All rights reserved.
C1 [Ramirez Reina, Tomas; Ivanova, Svetlana; Angel Centeno, Miguel; Antonio Odriozola, Jose] Ctr Mixto Univ Sevilla, CSIC, Inst Ciencia Mat Sevilla, Dept Quim Inorgan, Seville 41092, Spain.
   [Xu, Wenqian; Hanson, Jonathan; Rodriguez, Jose A.] Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA.
RP Reina, TR (reprint author), Ctr Mixto Univ Sevilla, CSIC, Inst Ciencia Mat Sevilla, Dept Quim Inorgan, Avda Americo Vespucio 49, Seville 41092, Spain.
EM tomas.ramirez@icmse.csic.es
RI Xu, Wenqian/M-5906-2013; Centeno, Miguel Angel/G-5583-2015; Ivanova,
   Svetlana/G-7287-2015; Hanson, jonathan/E-3517-2010; Odriozola, Jose
   Antonio/N-2777-2013; 
OI Centeno, Miguel Angel/0000-0002-8349-3044; Ivanova,
   Svetlana/0000-0003-4552-3289; Odriozola, Jose
   Antonio/0000-0002-8283-0459; Ramirez Reina, Tomas/0000-0001-9693-5107
NR 48
TC 15
Z9 15
U1 3
U2 120
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0920-5861
J9 CATAL TODAY
JI Catal. Today
PD APR 30
PY 2013
VL 205
BP 41
EP 48
DI 10.1016/j.cattod.2012.08.004
PG 8
WC Chemistry, Applied; Chemistry, Physical; Engineering, Chemical
SC Chemistry; Engineering
GA 115DB
UT WOS:000316791700007
ER

PT J
AU Kim, T
   Assary, RS
   Kim, H
   Marshall, CL
   Gosztola, DJ
   Curtiss, LA
   Stair, PC
AF Kim, Taejin
   Assary, Rajeev S.
   Kim, Hacksung
   Marshall, Christopher L.
   Gosztola, David J.
   Curtiss, Larry A.
   Stair, Peter C.
TI Effects of solvent on the furfuryl alcohol polymerization reaction: UV
   Raman spectroscopy study
SO CATALYSIS TODAY
LA English
DT Article; Proceedings Paper
CT Conference on Oprando IV - Recent Developments and Future Perspectives
   in Spectroscopy of Working Catalysts
CY APR 29-MAY 03, 2012
CL Brookhaven Natl Lab, New York, NY
SP ExxonMobil, Bruker, Shell, BaySpec, FEI, UOP, PerkinElmer, Elsevier, Catalysis Today, Avantes, Harrick, Hiden Analyt, Horiba, Princeton Instruments, VAT, VG Scienta, BNL, Photon Sci Directorate
HO Brookhaven Natl Lab
DE UV Raman spectroscopy; Furfuryl alcohol; Polymerization; Solvent effect;
   Acid catalyst
ID ACID-CATALYZED POLYCONDENSATION; OXIDE CATALYSTS; ULTRAVIOLET;
   CONVERSION; CHEMISTRY; COMPOSITES; FURANS
AB The effect of alcohol as a solvent on the acid-catalyzed conversion of furfuryl alcohol (FA) into polymerized furfuryl alcohol (PFA) has been studied by UV Raman spectroscopy. The major peak intensity ratios were compared to gain quantitative information about the extent of polymerization in various solvents. The reaction rate of the polymerization has been found to significantly decrease with increasing concentrations of ethanol or butanol (n-butanol and iso-butanol). Compared to ethanol, longer or branched chain alcohols such as n-butanol and iso-butanol can marginally reduce the acid-catalyzed polymerization at room temperature. The plot of reciprocal intensity of the characteristic Raman band of FA vs. the reaction time suggests that the polymerization reactions follow second-order kinetics. (C) 2012 Elsevier B.V. All rights reserved.
C1 [Kim, Taejin; Kim, Hacksung; Marshall, Christopher L.; Stair, Peter C.] Argonne Natl Lab, Chem Sci & Engn Div, Argonne, IL 60439 USA.
   [Assary, Rajeev S.; Curtiss, Larry A.] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA.
   [Assary, Rajeev S.] Northwestern Univ, Dept Chem & Biol Engn, Evanston, IL 60208 USA.
   [Kim, Hacksung; Stair, Peter C.] Northwestern Univ, Dept Chem, Evanston, IL 60208 USA.
   [Gosztola, David J.; Curtiss, Larry A.] Argonne Natl Lab, Ctr Nanoscale Mat, Argonne, IL 60439 USA.
RP Stair, PC (reprint author), Northwestern Univ, Dept Chem, 2145 Sheridan Rd, Evanston, IL 60208 USA.
EM pstair@northwestern.edu
RI KIM, TAE JIN/M-7994-2014; Gosztola, David/D-9320-2011; Surendran Assary,
   Rajeev/E-6833-2012; Marshall, Christopher/D-1493-2015
OI KIM, TAE JIN/0000-0002-0096-303X; Gosztola, David/0000-0003-2674-1379;
   Surendran Assary, Rajeev/0000-0002-9571-3307; Marshall,
   Christopher/0000-0002-1285-7648
NR 25
TC 13
Z9 13
U1 2
U2 48
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0920-5861
J9 CATAL TODAY
JI Catal. Today
PD APR 30
PY 2013
VL 205
BP 60
EP 66
DI 10.1016/j.cattod.2012.09.033
PG 7
WC Chemistry, Applied; Chemistry, Physical; Engineering, Chemical
SC Chemistry; Engineering
GA 115DB
UT WOS:000316791700009
ER

PT J
AU Goesten, MG
   Stavitski, E
   Juan-Alcaniz, J
   Martinez-Joaristi, A
   Petukhov, AV
   Kapteijn, F
   Gascon, J
AF Goesten, Maarten G.
   Stavitski, Eli
   Juan-Alcaniz, Jana
   Martinez-Joaristi, Alberto
   Petukhov, Andrei V.
   Kapteijn, Freek
   Gascon, Jorge
TI Small-angle X-ray scattering documents the growth of metal-organic
   frameworks
SO CATALYSIS TODAY
LA English
DT Article; Proceedings Paper
CT Conference on Oprando IV - Recent Developments and Future Perspectives
   in Spectroscopy of Working Catalysts
CY APR 29-MAY 03, 2012
CL Brookhaven Natl Lab, New York, NY
SP ExxonMobil, Bruker, Shell, BaySpec, FEI, UOP, PerkinElmer, Elsevier, Catalysis Today, Avantes, Harrick, Hiden Analyt, Horiba, Princeton Instruments, VAT, VG Scienta, BNL, Photon Sci Directorate
HO Brookhaven Natl Lab
DE Metal organic framework; Crystallization; SAXS/WAXS; In situ
ID SECONDARY BUILDING UNITS; IN-SITU DIFFRACTION; MICROPOROUS METAL;
   ALUMINUM HYDROXIDES; HYDROGEN SELECTIVITY; DRUG-DELIVERY; SURFACE-AREA;
   CRYSTALLIZATION; ADSORPTION; SEPARATION
AB We present a combined in situ small-and wide-angle scattering (SAXS/WAXS) study on the crystallization of two topical metal-organic frameworks synthesized from similar metal and organic precursors: NH2-MIL-53(Al) and NH2-MIL-101(Al). A thorough analysis of SAXS data reveals the most important phenomena occurring during crystallization and unravels the effect of the solvent. NH2-MIL-53(Al) growth follows two routes: (i) through direct hydrolysis of AlCl3 center dot 6H(2)O in water, and (ii) via the intermediate NH2-MOF-235(Al), which forms in pure DMF or DMF/H2O mixtures. In the case of pure H2O as solvent, formation of NH2-MIL-53(Al) crystals proceeds through steady growth in all three dimensions. The addition of DMF to the synthesis mixture results in amorphous scattering entities forming very rapidly and subsequently arranging into the intermediate phase, NH2-MOF-235(Al). In DMF/H2O mixtures, amorphous precursors develop in rapid fashion with fractal character dominating, followed by densification, crystallization of NH2-MOF-235(Al) and slow transformation into NH2-MIL-53(Al). Formation of NH2-MIL-101(Al) only occurs when pure DMF is used as solvent, and it always proceeds through the formation of the intermediate NH2-MOF-235(Al). In this case a smooth scatterer surface is observed, with morphology and size constant in time. (C) 2012 Elsevier B.V. All rights reserved.
C1 [Goesten, Maarten G.; Juan-Alcaniz, Jana; Martinez-Joaristi, Alberto; Kapteijn, Freek; Gascon, Jorge] Delft Univ Technol, ChemE, NL-2628 BL Delft, Netherlands.
   [Stavitski, Eli] Brookhaven Natl Lab, Natl Synchrotron Light Source, Upton, NY 11973 USA.
   [Petukhov, Andrei V.] Univ Utrecht, Debye Inst Nanomat Sci, Vant Hoff Lab Phys & Colloid Chem, NL-3508 TC Utrecht, Netherlands.
RP Goesten, MG (reprint author), Delft Univ Technol, ChemE, Julianalaan 136, NL-2628 BL Delft, Netherlands.
EM m.g.goesten@tudelft.nl; j.gascon@tudelft.nl
RI Gascon, Jorge/E-8798-2010; Stavitski, Eli/C-4863-2009; Juan-Alcaniz,
   Jana/F-7875-2010; Petukhov, Andrei/B-8235-2009; Petukhov van Utrecht,
   Andrei/F-9477-2010; Group, CE/C-3853-2009; Gascon, Joaquim/M-3598-2015;
   Kapteijn, Frederik /F-2031-2010; Institute (DINS), Debye/G-7730-2014
OI Gascon, Jorge/0000-0001-7558-7123; Petukhov, Andrei/0000-0001-9840-6014;
   Gascon, Joaquim/0000-0002-5045-1585; Kapteijn, Frederik
   /0000-0003-0575-7953; 
NR 79
TC 21
Z9 21
U1 9
U2 178
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0920-5861
J9 CATAL TODAY
JI Catal. Today
PD APR 30
PY 2013
VL 205
BP 120
EP 127
DI 10.1016/j.cattod.2012.08.044
PG 8
WC Chemistry, Applied; Chemistry, Physical; Engineering, Chemical
SC Chemistry; Engineering
GA 115DB
UT WOS:000316791700017
ER

PT J
AU Bolin, TB
   Wu, TP
   Schweitzer, N
   Lobo-Lapidus, R
   Kropf, AJ
   Wang, H
   Hu, YF
   Miller, JT
   Heald, SM
AF Bolin, Trudy B.
   Wu, Tianpin
   Schweitzer, Neil
   Lobo-Lapidus, Rodrigo
   Kropf, A. Jeremy
   Wang, Hui
   Hu, Yongfeng
   Miller, Jeffrey T.
   Heald, Steven M.
TI In situ intermediate-energy X-ray catalysis research at the advanced
   photon source beamline 9-BM
SO CATALYSIS TODAY
LA English
DT Article; Proceedings Paper
CT Conference on Oprando IV - Recent Developments and Future Perspectives
   in Spectroscopy of Working Catalysts
CY APR 29-MAY 03, 2012
CL Brookhaven Natl Lab, New York, NY
SP ExxonMobil, Bruker, Shell, BaySpec, FEI, UOP, PerkinElmer, Elsevier, Catalysis Today, Avantes, Harrick, Hiden Analyt, Horiba, Princeton Instruments, VAT, VG Scienta, BNL, Photon Sci Directorate
HO Brookhaven Natl Lab
DE XAFS; XANES; Intermediate-energy; In situ; Catalysis; Pd L-edges XANES;
   Pt L-edge XANES; Alloy formation
AB A specially-designed catalysis reaction cell was used for acquiring X-ray Absorption Near Edge Structure (XANES) with heating and gas treatment in an intermediate-X-ray energy regime (similar to 2.1-4 keV) at the Advanced Photon Source beamline 9-BM. In situ X-ray measurements in this energy range can be complicated due to absorption by cell components, the reaction gases themselves, air surrounding the reaction cell, and a host of other reasons. As a proof of concept, bimetallic palladium catalysts were examined from the Pd L-II and L-III edges, at approximately 3.2 keV. The XANES edge position, the height of the "white line" peak, and the shape of the peak display significant changes with alloy formation and CO adsorption. This in turn shows that the Pd L-edge XANES are very sensitive to changes in the d-band density-of-states and can be used to derive rich information about how a supported Pd, or other 4d transition metal catalyst, behaves when under reaction conditions or upon alloy formation. (C) 2012 Elsevier B.V. All rights reserved.
C1 [Bolin, Trudy B.; Heald, Steven M.] Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA.
   [Wu, Tianpin; Schweitzer, Neil; Lobo-Lapidus, Rodrigo; Kropf, A. Jeremy; Miller, Jeffrey T.] Argonne Natl Lab, Chem Sci & Engn Div, Argonne, IL 60439 USA.
   [Wang, Hui] Univ Saskatchewan, Dept Chem & Biol Engn, Saskatoon, SK S7N 0W0, Canada.
   [Hu, Yongfeng] Canadian Light Source, Saskatoon, SK, Canada.
RP Bolin, TB (reprint author), Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA.
EM bolitru@aps.anl.gov
RI ID, MRCAT/G-7586-2011
NR 35
TC 6
Z9 6
U1 1
U2 33
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0920-5861
EI 1873-4308
J9 CATAL TODAY
JI Catal. Today
PD APR 30
PY 2013
VL 205
BP 141
EP 147
DI 10.1016/j.cattod.2012.09.034
PG 7
WC Chemistry, Applied; Chemistry, Physical; Engineering, Chemical
SC Chemistry; Engineering
GA 115DB
UT WOS:000316791700020
ER

PT J
AU Zhang, XH
   Wong, SE
   Lightstone, FC
AF Zhang, Xiaohua
   Wong, Sergio E.
   Lightstone, Felice C.
TI Message passing interface and multithreading hybrid for parallel
   molecular docking of large databases on petascale high performance
   computing machines
SO JOURNAL OF COMPUTATIONAL CHEMISTRY
LA English
DT Article
DE MPI; HPC; Molecular Docking; Vina; AutoDock center dot Virtual Screening
ID DRUG DISCOVERY; AUTOMATED DOCKING; GENETIC ALGORITHM; SCORING FUNCTIONS;
   ACCURATE DOCKING; FLEXIBLE DOCKING; SEARCH; OPTIMIZATION; SIMILARITY;
   PREDICTION
AB A mixed parallel scheme that combines message passing interface (MPI) and multithreading was implemented in the AutoDock Vina molecular docking program. The resulting program, named VinaLC, was tested on the petascale high performance computing (HPC) machines at Lawrence Livermore National Laboratory. To exploit the typical cluster-type supercomputers, thousands of docking calculations were dispatched by the master process to run simultaneously on thousands of slave processes, where each docking calculation takes one slave process on one node, and within the node each docking calculation runs via multithreading on multiple CPU cores and shared memory. Input and output of the program and the data handling within the program were carefully designed to deal with large databases and ultimately achieve HPC on a large number of CPU cores. Parallel performance analysis of the VinaLC program shows that the code scales up to more than 15K CPUs with a very low overhead cost of 3.94%. One million flexible compound docking calculations took only 1.4 h to finish on about 15K CPUs. The docking accuracy of VinaLC has been validated against the DUD data set by the re-docking of X-ray ligands and an enrichment study, 64.4% of the top scoring poses have RMSD values under 2.0 angstrom. The program has been demonstrated to have good enrichment performance on 70% of the targets in the DUD data set. An analysis of the enrichment factors calculated at various percentages of the screening database indicates VinaLC has very good early recovery of actives. (c) 2013 Wiley Periodicals, Inc.
C1 [Zhang, Xiaohua; Wong, Sergio E.; Lightstone, Felice C.] Lawrence Livermore Natl Lab, Biosci & Biotechnol Div, Phys & Life Sci Directorate, Livermore, CA 94550 USA.
RP Zhang, XH (reprint author), Lawrence Livermore Natl Lab, Biosci & Biotechnol Div, Phys & Life Sci Directorate, Livermore, CA 94550 USA.
EM lightstone1@llnl.gov
RI Zhang, Xiaohua/N-2622-2014
FU Laboratory Directed Research and Development [12-SI-004]; United States
   Department of Energy by the Lawrence Livermore National Laboratory
   [DE-AC52-07NA27344, LLNL-JRNL-568309]
FX Contract/grant sponsor: Laboratory Directed Research and Development;
   Contract/grant number: 12-SI-004.; The authors thank Scott Futral, John
   Gyllenhaal, and Ryan Day from Lawrence Livermore National Laboratory
   Computation Directorate for helpful discussion of the parallel scheme.
   We thank Livermore Computing for the computer time. This work was
   performed under the auspices of the United States Department of Energy
   by the Lawrence Livermore National Laboratory under Contract
   DE-AC52-07NA27344, LLNL-JRNL-568309.
NR 48
TC 24
Z9 24
U1 1
U2 27
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 0192-8651
J9 J COMPUT CHEM
JI J. Comput. Chem.
PD APR 30
PY 2013
VL 34
IS 11
BP 915
EP 927
DI 10.1002/jcc.23214
PG 13
WC Chemistry, Multidisciplinary
SC Chemistry
GA 112XG
UT WOS:000316627400003
PM 23345155
ER

PT J
AU Coh, S
   Gannett, W
   Zettl, A
   Cohen, ML
   Louie, SG
AF Coh, Sinisa
   Gannett, Will
   Zettl, A.
   Cohen, Marvin L.
   Louie, Steven G.
TI Surface Atom Motion to Move Iron Nanocrystals through Constrictions in
   Carbon Nanotubes under the Action of an Electric Current
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID MASS-TRANSPORT; ELECTROMIGRATION; SIMULATION; METALS
AB Under the application of electrical currents, metal nanocrystals inside carbon nanotubes can be bodily transported. We examine experimentally and theoretically how an iron nanocrystal can pass through a constriction in the carbon nanotube with a smaller cross-sectional area than the nanocrystal itself. Remarkably, through in situ transmission electron imaging and diffraction, we find that, while passing through a constriction, the nanocrystal remains largely solid and crystalline and the carbon nanotube is unaffected. We account for this behavior by a pattern of iron atom motion and rearrangement on the surface of the nanocrystal. The nanocrystal motion can be described with a model whose parameters are nearly independent of the nanocrystal length, area, temperature, and electromigration force magnitude. We predict that metal nanocrystals can move through complex geometries and constrictions, with implications for both nanomechanics and tunable synthesis of metal nanoparticles.
C1 [Coh, Sinisa] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
   Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94720 USA.
RP Coh, S (reprint author), Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
EM sinisa@civet.berkeley.edu
RI Zettl, Alex/O-4925-2016
OI Zettl, Alex/0000-0001-6330-136X
FU Office of Energy Research, Office of Basic Energy Sciences, Materials
   Sciences and Engineering Division, of the U.S. Department of Energy
   [DE-AC02-05CH11231]
FX We thank Gavi Begtrup for assistance with sample preparation and
   microscopy and David Strubbe for discussion. This work was supported by
   the Director, Office of Energy Research, Office of Basic Energy
   Sciences, Materials Sciences and Engineering Division, of the U.S.
   Department of Energy under Contract No. DE-AC02-05CH11231.
NR 19
TC 11
Z9 11
U1 0
U2 22
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
EI 1079-7114
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD APR 29
PY 2013
VL 110
IS 18
AR 185901
DI 10.1103/PhysRevLett.110.185901
PG 5
WC Physics, Multidisciplinary
SC Physics
GA 145KK
UT WOS:000319014400006
PM 23683222
ER

PT J
AU Fan, RH
   Li, J
   Peng, RW
   Huang, XR
   Qi, DX
   Xu, DH
   Ren, XP
   Wang, M
AF Fan, Ren-Hao
   Li, Jia
   Peng, Ru-Wen
   Huang, Xian-Rong
   Qi, Dong-Xiang
   Xu, Di-Hu
   Ren, Xiao-Ping
   Wang, Mu
TI Oblique metal gratings transparent for broadband terahertz waves
SO APPLIED PHYSICS LETTERS
LA English
DT Article
ID EXTRAORDINARY OPTICAL-TRANSMISSION; SECURITY APPLICATIONS; SUBWAVELENGTH
   OPTICS; HOLE ARRAYS
AB In this work, we experimentally and theoretically demonstrate that oblique metal gratings with optimal tilt angles can become transparent for broadband terahertz waves under normal incidence. Direct imaging is applied to intuitively prove this broadband transparency phenomenon of structured metals. The transparency is insensitive to the grating thickness due to the non-resonance mechanism, and the optimal tilt angle is determined only by the strip width and the grating period. The oblique metal gratings with broadband transparence may have many potential applications, such as transparent conducting panels, white-beam polarizers, and stealth objects. (C) 2013 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution 3.0 Unported License.
C1 [Fan, Ren-Hao; Li, Jia; Peng, Ru-Wen; Qi, Dong-Xiang; Xu, Di-Hu; Ren, Xiao-Ping; Wang, Mu] Nanjing Univ, Natl Lab Solid State Microstruct, Nanjing 210093, Jiangsu, Peoples R China.
   [Fan, Ren-Hao; Li, Jia; Peng, Ru-Wen; Qi, Dong-Xiang; Xu, Di-Hu; Ren, Xiao-Ping; Wang, Mu] Nanjing Univ, Dept Phys, Nanjing 210093, Jiangsu, Peoples R China.
   [Li, Jia] Chinese Acad Sci, Wuhan Inst Phys & Math, Wuhan 430071, Peoples R China.
   [Huang, Xian-Rong] Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA.
RP Peng, RW (reprint author), Nanjing Univ, Natl Lab Solid State Microstruct, Nanjing 210093, Jiangsu, Peoples R China.
EM rwpeng@nju.edu.cn; xiahuang@aps.anl.gov; muwang@nju.edu.cn
FU Ministry of Science and Technology of China [2012CB921502,
   2010CB630705]; National Science Foundation of China [11034005, 61077023,
   11021403]; Ministry of Education of China [20100091110029]; U.S.
   Department of Energy, Office of Science, Office of Basic Energy Sciences
   [DE-AC02-06CH11357]
FX This work was supported by the Ministry of Science and Technology of
   China (Grant Nos. 2012CB921502 and 2010CB630705), the National Science
   Foundation of China (Grant Nos. 11034005, 61077023, and 11021403), and
   partly by the Ministry of Education of China (20100091110029). X. R. H.
   was supported by the U.S. Department of Energy, Office of Science,
   Office of Basic Energy Sciences, under Contract No. DE-AC02-06CH11357.
NR 32
TC 10
Z9 10
U1 4
U2 36
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
   MELVILLE, NY 11747-4501 USA
SN 0003-6951
J9 APPL PHYS LETT
JI Appl. Phys. Lett.
PD APR 29
PY 2013
VL 102
IS 17
AR 171904
DI 10.1063/1.4803467
PG 5
WC Physics, Applied
SC Physics
GA 139AG
UT WOS:000318553000020
ER

PT J
AU Harrison, SE
   Li, S
   Huo, Y
   Zhou, B
   Chen, YL
   Harris, JS
AF Harrison, S. E.
   Li, S.
   Huo, Y.
   Zhou, B.
   Chen, Y. L.
   Harris, J. S.
TI Two-step growth of high quality Bi2Te3 thin films on Al2O3 (0001) by
   molecular beam epitaxy
SO APPLIED PHYSICS LETTERS
LA English
DT Article
ID TOPOLOGICAL INSULATOR; ELECTRONIC-STRUCTURE; BISMUTH TELLURIDE; BI2SE3;
   SI(111); SURFACE; MBE
AB Large-area topological insulator Bi2Te3 thin films were grown on Al2O3 (0001) using a two-temperature step molecular beam epitaxy growth process. By depositing a low temperature nucleation layer to serve as a template for high temperature epitaxial film growth, a high quality terrace-step surface morphology with a significant reduction in three-dimensional defect structures was achieved. X-ray diffraction measurements indicate that high crystalline quality Bi2Te3 layers were grown incoherently by van der Waals epitaxy using this technique. Angle resolved photoemission spectroscopy measurements verified the integrity of this growth method by confirming the presence of metallic surface states on cleaved two-step Bi2Te3 samples. (C) 2013 AIP Publishing LLC.
C1 [Harrison, S. E.; Huo, Y.; Harris, J. S.] Stanford Univ, Dept Elect Engn, Stanford, CA 94305 USA.
   [Li, S.; Zhou, B.; Chen, Y. L.] Stanford Univ, Dept Phys, Stanford, CA 94305 USA.
   [Zhou, B.; Chen, Y. L.] Univ Oxford, Dept Phys, Oxford OX1 3PU, England.
   [Zhou, B.; Chen, Y. L.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Adv Light Source, Berkeley, CA 94720 USA.
RP Harrison, SE (reprint author), Stanford Univ, Dept Elect Engn, Stanford, CA 94305 USA.
EM sara9@stanford.edu
FU DARPA MESO project [N66001-11-1-4105]; Army Research Laboratories;
   Department of Defense (DoD) through the National Defense Science &
   Engineering Graduate Fellowship (NDSEG) Program
FX This work was supported by a DARPA MESO project (No. N66001-11-1-4105)
   and the Army Research Laboratories. S. E. Harrison was supported by the
   Department of Defense (DoD) through the National Defense Science &
   Engineering Graduate Fellowship (NDSEG) Program. We thank Thorsten
   Hesjedal, Dong Liang, Aakash Pushp, Haijun Zhang, Shoucheng Zhang, Xiao
   Zhang, Robert Chen, Wei Han, Angie Lin, Zhongkai Liu, and Tomas
   Sarmiento for helpful discussions throughout the course of this work.
NR 34
TC 31
Z9 31
U1 8
U2 116
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
   MELVILLE, NY 11747-4501 USA
SN 0003-6951
J9 APPL PHYS LETT
JI Appl. Phys. Lett.
PD APR 29
PY 2013
VL 102
IS 17
AR 171906
DI 10.1063/1.4803717
PG 4
WC Physics, Applied
SC Physics
GA 139AG
UT WOS:000318553000022
ER

PT J
AU Jacimovic, J
   Gaal, R
   Magrez, A
   Forro, L
   Regmi, M
   Eres, G
AF Jacimovic, J.
   Gaal, R.
   Magrez, A.
   Forro, L.
   Regmi, M.
   Eres, Gyula
TI Electrical property measurements of Cr-N codoped TiO2 epitaxial thin
   films grown by pulsed laser deposition
SO APPLIED PHYSICS LETTERS
LA English
DT Article
ID ANATASE TIO2; SINGLE-CRYSTALS; DOPED TIO2; METAL; CONDUCTIVITY; PRESSURE
AB The temperature dependent resistivity and thermo-electric power of Cr-N codoped TiO2 were compared with that of single element N and Cr doped and undoped TiO2 using epitaxial anatase thin films grown by pulsed laser deposition on (100) LaAlO3 substrates. The resistivity plots and especially the thermoelectric power data confirm that codoping is not a simple sum of single element doping. However, the negative sign of the Seebeck coefficient indicates electron dominated transport independent of doping. The narrowing distinction among the effects of different doping methods combined with increasing resistivity of the films with improving crystalline quality of TiO2 suggest that structural defects play a critical role in the doping process. (C) 2013 AIP Publishing LLC.
C1 [Jacimovic, J.; Gaal, R.; Magrez, A.; Forro, L.] Ecole Polytech Fed Lausanne, Lab Phys Complex Matter, CH-1015 Lausanne, Switzerland.
   [Regmi, M.; Eres, Gyula] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA.
RP Jacimovic, J (reprint author), Ecole Polytech Fed Lausanne, Lab Phys Complex Matter, CH-1015 Lausanne, Switzerland.
RI Jacimovic, Jacim/C-2674-2013; Eres, Gyula/C-4656-2017
OI Eres, Gyula/0000-0003-2690-5214
FU Swiss NSF; U.S. Department of Energy, Basic Energy Sciences, Materials
   Sciences and Engineering Division
FX The work in Lausanne was supported by the Swiss NSF through its research
   network "MaNEP." The work at Oak Ridge National Laboratory was supported
   by the U.S. Department of Energy, Basic Energy Sciences, Materials
   Sciences and Engineering Division. The authors thank Endre Horvath for
   fruitful discussions.
NR 23
TC 7
Z9 7
U1 1
U2 56
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
   MELVILLE, NY 11747-4501 USA
SN 0003-6951
J9 APPL PHYS LETT
JI Appl. Phys. Lett.
PD APR 29
PY 2013
VL 102
IS 17
AR 172108
DI 10.1063/1.4804240
PG 4
WC Physics, Applied
SC Physics
GA 139AG
UT WOS:000318553000034
ER

PT J
AU Kuciauskas, D
   Kanevce, A
   Duenow, JN
   Dippo, P
   Young, M
   Li, JV
   Levi, DH
   Gessert, TA
AF Kuciauskas, Darius
   Kanevce, Ana
   Duenow, Joel N.
   Dippo, Pat
   Young, Matthew
   Li, Jian V.
   Levi, Dean H.
   Gessert, Timothy A.
TI Spectrally and time resolved photoluminescence analysis of the CdS/CdTe
   interface in thin-film photovoltaic solar cells
SO APPLIED PHYSICS LETTERS
LA English
DT Article
ID BAND-EDGE PHOTOLUMINESCENCE; CDTE; TEMPERATURE; LIFETIME
AB Light absorption and charge separation in thin-film polycrystalline cadmium telluride (CdTe) photovoltaic (PV) solar cells largely occur in the vicinity of the CdS/CdTe interface. Sulfur alloying at this interface to form CdSxTe1-x and doping with Cu appear to be important for efficient PV devices. Based on the different band gaps of CdSxTe1-x and CdTe, we apply spectroscopic and computational photoluminescence (PL) analysis to characterize this interface. We find that Cu concentration changes the dynamics of charge separation and PL emission intensities from the CdSxTe1-x and CdTe regions. We have determined charge separation lifetime and minority carrier lifetime, and we have estimated minority carrier mobility as <100 cm(2) V-1 s(-1). (C) 2013 AIP Publishing LLC.
C1 [Kuciauskas, Darius; Kanevce, Ana; Duenow, Joel N.; Dippo, Pat; Young, Matthew; Li, Jian V.; Levi, Dean H.; Gessert, Timothy A.] Natl Renewable Energy Lab, Golden, CO 80401 USA.
RP Kuciauskas, D (reprint author), Natl Renewable Energy Lab, 15013 Denver West Pkwy, Golden, CO 80401 USA.
EM Darius.Kuciauskas@nrel.gov
RI Li, Jian/B-1627-2016
FU U.S. Department of Energy [DE-AC36-08-GO28308]; National Renewable
   Energy Laboratory
FX This work was supported by the U.S. Department of Energy under Contract
   No. DE-AC36-08-GO28308 with the National Renewable Energy Laboratory.
NR 30
TC 7
Z9 7
U1 4
U2 74
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
   MELVILLE, NY 11747-4501 USA
SN 0003-6951
J9 APPL PHYS LETT
JI Appl. Phys. Lett.
PD APR 29
PY 2013
VL 102
IS 17
AR 173902
DI 10.1063/1.4803911
PG 5
WC Physics, Applied
SC Physics
GA 139AG
UT WOS:000318553000080
ER

PT J
AU Lu, P
   Xiong, J
   Van Benthem, M
   Jia, QX
AF Lu, Ping
   Xiong, Jie
   Van Benthem, Mark
   Jia, Quanxi
TI Atomic-scale chemical quantification of oxide interfaces using
   energy-dispersive X-ray spectroscopy
SO APPLIED PHYSICS LETTERS
LA English
DT Article
ID MICROSCOPY
AB Atomic-scale quantification of chemical composition across oxide interfaces is important for understanding physical properties of epitaxial oxide nanostructures. Energy-dispersive X-ray spectroscopy (EDS) in an aberration-corrected scanning transmission electron microscope was used to quantify chemical composition across the interface of ferromagnetic La0.7Sr0.3MnO3 and antiferromagnetic BiFeO3 quantum structure. This research demonstrates that chemical composition at atomic columns can be quantified by Gaussian peak-fitting of EDS compositional profiles across the interface. Cation diffusion was observed at both A- and B-sublattice sites; and asymmetric chemical profiles exist across the interface, consistent with the previous studies. (C) 2013 AIP Publishing LLC.
C1 [Lu, Ping; Van Benthem, Mark] Sandia Natl Labs, Albuquerque, NM 87185 USA.
   [Xiong, Jie; Jia, Quanxi] Los Alamos Natl Lab, Ctr Integrated Nanotechnol, Los Alamos, NM 87545 USA.
RP Lu, P (reprint author), Sandia Natl Labs, POB 5800,MS 1411, Albuquerque, NM 87185 USA.
EM plu@sandia.gov
RI Jia, Q. X./C-5194-2008
FU US Department of Energy's National Nuclear Security Administration
   [DE-AC04-94AL85000]; National Nuclear Security Administration of the
   U.S. Department of Energy under [DE-AC52-06NA25396]
FX Sandia National Laboratories is a multi-program laboratory managed and
   operated by Sandia Corporation, a wholly owned subsidiary of Lockheed
   Martin Corporation, for the US Department of Energy's National Nuclear
   Security Administration under Contract No. DE-AC04-94AL85000. The work
   at Los Alamos was performed, in part, at the Center for Integrated
   Nanotechnologies, an Office of Science User Facility operated for the
   U.S. Department of Energy (DOE) Office of Science. Los Alamos National
   Laboratory, an affirmative action equal opportunity employer, is
   operated by Los Alamos National Security, LLC, for the National Nuclear
   Security Administration of the U.S. Department of Energy under Contract
   No. DE-AC52-06NA25396.
NR 29
TC 11
Z9 11
U1 1
U2 46
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
   MELVILLE, NY 11747-4501 USA
SN 0003-6951
J9 APPL PHYS LETT
JI Appl. Phys. Lett.
PD APR 29
PY 2013
VL 102
IS 17
AR 173111
DI 10.1063/1.4804184
PG 4
WC Physics, Applied
SC Physics
GA 139AG
UT WOS:000318553000059
ER

PT J
AU Santala, MK
   Reed, BW
   Raoux, S
   Topuria, T
   LaGrange, T
   Campbell, GH
AF Santala, M. K.
   Reed, B. W.
   Raoux, S.
   Topuria, T.
   LaGrange, T.
   Campbell, G. H.
TI Irreversible reactions studied with nanosecond transmission electron
   microscopy movies: Laser crystallization of phase change materials
SO APPLIED PHYSICS LETTERS
LA English
DT Article
ID LIQUID GE-TE; AMORPHOUS GETE; ALLOYS; NUCLEATION; GLASS; GE2SB2TE5;
   STORAGE; FILMS
AB We use multi-frame, nanosecond-scale photo-emission transmission electron microscopy to create movies of irreversible reactions that occur too rapidly to capture with conventional microscopy. The technique is applied to the crystallization of phase change materials used for optical and resistive memory. For those applications, laser-or current-induced crystallization is orders of magnitude too fast to capture with other imaging techniques. We recorded movies of laser-induced crystallization and measured crystal growth rates at temperatures close to where the maximum growth rate occurs. This paves the way for studying crystallization kinetics of phase change materials over the whole range of technologically relevant temperatures. (C) 2013 AIP Publishing LLC.
C1 [Santala, M. K.; Reed, B. W.; LaGrange, T.; Campbell, G. H.] Lawrence Livermore Natl Lab, Condensed Matter & Mat Div, Livermore, CA 94551 USA.
   [Raoux, S.] IBM Corp, Thomas J Watson Res Ctr, Yorktown Hts, NY 10598 USA.
   [Topuria, T.] IBM Res Almaden, San Jose, CA 95120 USA.
RP Santala, MK (reprint author), Lawrence Livermore Natl Lab, Condensed Matter & Mat Div, 7000 East Ave, Livermore, CA 94551 USA.
EM santala1@llnl.gov
RI Santala, Melissa/K-6871-2013; Raoux, Simone/G-3920-2016; 
OI Santala, Melissa/0000-0002-5189-5153
FU U.S. Department of Energy, Office of Basic Energy Sciences, Division of
   Materials Sciences and Engineering by Lawrence Livermore National
   Laboratory [DE-AC52-07NA27344]
FX This work was performed under the auspices of the U.S. Department of
   Energy, Office of Basic Energy Sciences, Division of Materials Sciences
   and Engineering by Lawrence Livermore National Laboratory under Contract
   No. DE-AC52-07NA27344.
NR 32
TC 22
Z9 22
U1 2
U2 77
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
   MELVILLE, NY 11747-4501 USA
SN 0003-6951
J9 APPL PHYS LETT
JI Appl. Phys. Lett.
PD APR 29
PY 2013
VL 102
IS 17
AR 174105
DI 10.1063/1.4803921
PG 5
WC Physics, Applied
SC Physics
GA 139AG
UT WOS:000318553000089
ER

PT J
AU Subramanian, G
   Perez, D
   Uberuaga, BP
   Tome, CN
   Voter, AF
AF Subramanian, Gopinath
   Perez, Danny
   Uberuaga, Blas P.
   Tome, Carlos N.
   Voter, Arthur F.
TI Method to account for arbitrary strains in kinetic Monte Carlo
   simulations
SO PHYSICAL REVIEW B
LA English
DT Article
ID MINIMUM ENERGY PATHS; ELASTIC BAND METHOD; POINT-DEFECTS;
   IONIC-CRYSTALS; SADDLE-POINTS; BCC IRON; DIFFUSION; DEFORMATION;
   IRRADIATION; DEPOSITION
AB We present a method for efficiently recomputing rates in a kinetic Monte Carlo simulation when the existing rate catalog is modified by the presence of a strain field. We use the concept of the dipole tensor to estimate the changes in the kinetic barriers that comprise the catalog, thereby obviating the need for recomputing them from scratch. The underlying assumptions in the method are that linear elasticity is valid, and that the topology of the underlying potential energy surface (and consequently, the fundamental structure of the rate catalog) is not changed by the strain field. As a simple test case, we apply the method to a single vacancy in zirconium diffusing in the strain field of a dislocation, and discuss the consequences of the assumptions on simulating more complex materials.
C1 [Subramanian, Gopinath; Perez, Danny; Voter, Arthur F.] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM USA.
   [Uberuaga, Blas P.; Tome, Carlos N.] Los Alamos Natl Lab, Div Mat Sci & Technol, Los Alamos, NM 87545 USA.
RP Subramanian, G (reprint author), Los Alamos Natl Lab, Div Theoret, Los Alamos, NM USA.
EM gss@lanl.gov
RI Tome, Carlos/D-5058-2013; Albe, Karsten/F-1139-2011; 
OI Voter, Arthur/0000-0001-9788-7194
FU Consortium for Advanced Simulation of Light Water Reactors an Energy
   Innovation Hub for Modeling and Simulation of Nuclear Reactors under
   U.S. Department of Energy [DE-AC05-00OR22725]; U.S. Department of
   Energy, Office of Basic Energy Sciences, Materials Sciences and
   Engineering Division
FX G.S., B.P.U., and C.N.T. were supported by funding from the Consortium
   for Advanced Simulation of Light Water Reactors (www.casl.gov), an
   Energy Innovation Hub (http://www.energy.gov/hubs) for Modeling and
   Simulation of Nuclear Reactors under U.S. Department of Energy Contract
   No. DE-AC05-00OR22725. D.P. and A.F.V. were supported by funding from
   the U.S. Department of Energy, Office of Basic Energy Sciences,
   Materials Sciences and Engineering Division. This paper has been
   designated LA-UR-12-26080.
NR 55
TC 5
Z9 5
U1 1
U2 41
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 2469-9950
EI 2469-9969
J9 PHYS REV B
JI Phys. Rev. B
PD APR 29
PY 2013
VL 87
IS 14
AR 144107
DI 10.1103/PhysRevB.87.144107
PG 12
WC Physics, Condensed Matter
SC Physics
GA 138LM
UT WOS:000318510100003
ER

PT J
AU Best, A
   Falahat, S
   Gorres, J
   Couder, M
   deBoer, R
   Guray, RT
   Kontos, A
   Kratz, KL
   LeBlanc, PJ
   Li, Q
   O'Brien, S
   Ozkan, N
   Sonnabend, K
   Talwar, R
   Uberseder, E
   Wiescher, M
AF Best, A.
   Falahat, S.
   Goerres, J.
   Couder, M.
   deBoer, R.
   Gueray, R. T.
   Kontos, A.
   Kratz, K. -L.
   LeBlanc, P. J.
   Li, Q.
   O'Brien, S.
   Ozkan, N.
   Sonnabend, K.
   Talwar, R.
   Uberseder, E.
   Wiescher, M.
TI Measurement of the reaction O-18(alpha, n)Ne-21
SO PHYSICAL REVIEW C
LA English
DT Article
ID THERMONUCLEAR REACTION-RATES; YIELD
AB Background: The reaction O-18(alpha, n)Ne-21 is a part of the reaction chains leading to the production of F-19 and Ne-22 during He burning in low-mass and massive AGB stars, respectively. Additionally, it has been observed as a strong background source in the measurement of other (alpha, n) reactions.
   Purpose: Previously low-energy O-18(alpha, n)Ne-21 cross section data have only been available in a non-peer-reviewed form. An improved measurement of this reaction has been done to both clarify its astrophysical influence as well as to provide background yield data for future (alpha, n) experiments.
   Method: The O-18(alpha, n((0+1))) reaction has been measured with a moderating neutron detector. In addition the (alpha, n(1)gamma) channel has been measured independently by observation of the characteristic 350.7 keV gamma transition in Ne-21. The reaction cross section at energies above E-alpha = 1100 keV was determined by a simultaneous R-matrix fit to both channels. The strengths of the two lowest-energy resonances at E-alpha = 959 keV and E-alpha = 1066 keV were analyzed separately using individual Breit-Wigner fits.
   Results: The cross section of both reaction channels, O-18(alpha, n(0))Ne-21 and O-18(alpha, n(1)gamma)Ne-21, was determined from the threshold energies at 851 keV and 1280 keV, respectively, to 2300 keV. A new reaction rate has been deduced for the temperature range of 0.1 GK to 10 GK. A previously reported resonance at E-alpha = 888 keV is explained as background from the contaminant reaction O-17(alpha, n)Ne-20.
   Conclusions: In general, our reaction rate is slightly lower than the reaction rates in recent compilations. At temperatures below 0.2 GK the present rate is significantly lower because it could be shown that the lowest reported resonance is background from the reaction O-17(alpha, n)Ne-20 that has been wrongly assigned to O-18(alpha, n)Ne-21.
C1 [Best, A.; Falahat, S.; Goerres, J.; Couder, M.; deBoer, R.; Kontos, A.; LeBlanc, P. J.; Li, Q.; O'Brien, S.; Talwar, R.; Uberseder, E.; Wiescher, M.] Univ Notre Dame, Dept Phys, Notre Dame, IN 46556 USA.
   [Falahat, S.; Kratz, K. -L.] Max Planck Inst Chem, Dept Biogeochem, D-55020 Mainz, Germany.
   [Gueray, R. T.; Ozkan, N.] Kocaeli Univ, Dept Phys, TR-41380 Umuttepe, Kocaeli, Turkey.
   [Sonnabend, K.] Goethe Univ Frankfurt, Inst Appl Phys, D-60325 Frankfurt, Germany.
RP Best, A (reprint author), Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
EM abest1@nd.edu
RI Ozkan, Nalan/B-9710-2009; Guray, Recep/B-9653-2009; Couder,
   Manoel/B-1439-2009; 
OI Couder, Manoel/0000-0002-0636-744X; Best, Andreas/0000-0001-8869-9757
FU National Science Foundation [Phys-0758100]; Joint Institute for Nuclear
   Astrophysics through the NSF Physics Frontier Center program
   [Phys-0822648]
FX The authors express their gratitude to the technical staff of the
   Nuclear Science Laboratory at Notre Dame. This work was funded by the
   National Science Foundation through Grant No. Phys-0758100 and the Joint
   Institute for Nuclear Astrophysics supported through the NSF Physics
   Frontier Center program, Grant No. Phys-0822648.
NR 26
TC 4
Z9 4
U1 1
U2 17
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0556-2813
J9 PHYS REV C
JI Phys. Rev. C
PD APR 29
PY 2013
VL 87
IS 4
AR 045806
DI 10.1103/PhysRevC.87.045806
PG 8
WC Physics, Nuclear
SC Physics
GA 138RB
UT WOS:000318525000007
ER

PT J
AU Carpenter, MP
   Janssens, RVF
   Zhu, S
AF Carpenter, M. P.
   Janssens, R. V. F.
   Zhu, S.
TI Shape coexistence in neutron-rich nuclei near N=40
SO PHYSICAL REVIEW C
LA English
DT Article
ID ISOTOPES; STATES; BANDS
AB Recent data show that both the 2(+) and 4(+) levels in the even neutron-rich Cr and Fe isotopes decrease in excitation energy toward N = 40. This observation, along with Coulomb excitation and lifetime data, strongly indicates an increase in collectivity near N = 40 in contradiction with expectations based on first principles. A straightforward two-band mixing model is used to investigate the structure of these neutron-rich Cr and Fe nuclei. The approach takes advantage of the extensive data available for Fe-60 to provide the parameter values with which to reproduce the experimental observations in the Cr58-64 and Fe60-68 isotopic chains. Comparisons between the model and the data suggest marked structural differences for the ground-state configurations of N = 40 Cr and Fe.
C1 [Carpenter, M. P.; Janssens, R. V. F.; Zhu, S.] Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA.
RP Carpenter, MP (reprint author), Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA.
RI Carpenter, Michael/E-4287-2015
OI Carpenter, Michael/0000-0002-3237-5734
FU US Department of Energy, Office of Nuclear Physics [DE-AC02-06CH11357]
FX This work was supported by the US Department of Energy, Office of
   Nuclear Physics, under Contract No. DE-AC02-06CH11357.
NR 33
TC 17
Z9 17
U1 1
U2 5
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0556-2813
J9 PHYS REV C
JI Phys. Rev. C
PD APR 29
PY 2013
VL 87
IS 4
AR 041305
DI 10.1103/PhysRevC.87.041305
PG 5
WC Physics, Nuclear
SC Physics
GA 138RB
UT WOS:000318525000001
ER

PT J
AU Fotiades, N
   Devlin, M
   Nelson, RO
   Granier, T
AF Fotiades, N.
   Devlin, M.
   Nelson, R. O.
   Granier, T.
TI Low-spin states in Kr-86 from the (n, n ') reaction
SO PHYSICAL REVIEW C
LA English
DT Article
ID SHELL-MODEL CALCULATIONS; CROSS-SECTION RATIOS; INELASTIC-SCATTERING;
   NEUTRON; EXCITATIONS; ENERGY; FISSION; NUCLEI
AB Background: Kr-86(50) is a neutron-rich nucleus amenable to shell-model calculations due to the shell closure at N = 50. It is also produced as a fragment in the fissioning of actinides.
   Purpose: The level structure of Kr-86 at low excitation energies needs additional investigation for detailed comparison with calculations from theoretical models. By determining the cross sections for transitions that feed directly the ground state of Kr-86, a large fraction of the total cross section for the Kr-86(n, n') Kr-86 reaction channel can be obtained.
   Methods: Low-spin states of Kr-86 were populated in the Kr-86(n, n'.) reaction and were studied with the Germanium Array for Neutron-Induced Excitations (GEANIE) spectrometer. The broad-spectrum pulsed neutron beam of the Los Alamos Neutron Science Center's (LANSCE) WNR facility provided neutrons in the energy range from 1 to above 600 MeV. The time-of-flight technique was used to determine the incident-neutron energies.
   Results: Partial gamma-ray cross sections were measured for 21 gamma rays of Kr-86 and for neutron energies 1 MeV < E-n < 20 MeV. A large part of the total cross section for the Kr-86(n, n')Kr-86 reaction is observed. Ten new transitions are observed and placed on the level scheme at excitation energies below 3.7 MeV, doubling the number of placed transitions up to this excitation energy. These transitions de-excite five previously known levels, among them the second and third 0(+) states, and one new level. The excitation energy of these levels was more accurately determined and the relative intensities of their decay paths were measured. All previously known levels up to 3.7-MeV excitation energy were identified, and the new level was added at 2917-keV excitation energy. Predictions from shell-model calculations are compared with the data.
C1 [Fotiades, N.; Devlin, M.; Nelson, R. O.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
   [Granier, T.] CEA, DAM, DIF, F-91297 Arpajon, France.
RP Fotiades, N (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA.
EM fotia@lanl.gov
RI Devlin, Matthew/B-5089-2013; 
OI Devlin, Matthew/0000-0002-6948-2154; Fotiadis,
   Nikolaos/0000-0003-1410-3871
FU US Department of Energy (DOE) [DE-AC52-06NA25396]
FX This work was performed under the auspices of the US Department of
   Energy (DOE) under Contract No. DE-AC52-06NA25396 and under an agreement
   between CEA/DAM and NNSA/DP on cooperation on fundamental science. This
   work has benefited from use of the LANSCE accelerator facility supported
   under DOE Contract No. DE-AC52-06NA25396. The authors thank Thierry
   Ethvignot for providing the <SUP>86</SUP>Kr gas sample.
NR 31
TC 3
Z9 3
U1 0
U2 10
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0556-2813
J9 PHYS REV C
JI Phys. Rev. C
PD APR 29
PY 2013
VL 87
IS 4
AR 044336
DI 10.1103/PhysRevC.87.044336
PG 6
WC Physics, Nuclear
SC Physics
GA 138RB
UT WOS:000318525000003
ER

PT J
AU Argibay, N
   Brumbach, MT
   Dugger, MT
   Kotula, PG
AF Argibay, N.
   Brumbach, M. T.
   Dugger, M. T.
   Kotula, P. G.
TI Grain boundary diffusivity of Ni in Au thin films and the associated
   degradation in electrical contact resistance due to surface oxide film
   formation (vol 113, 114906, 2013)
SO JOURNAL OF APPLIED PHYSICS
LA English
DT Correction
C1 [Argibay, N.; Brumbach, M. T.; Dugger, M. T.; Kotula, P. G.] Sandia Natl Labs, Mat Sci & Engn Ctr, Albuquerque, NM 87123 USA.
RP Argibay, N (reprint author), Sandia Natl Labs, Mat Sci & Engn Ctr, Albuquerque, NM 87123 USA.
NR 1
TC 0
Z9 0
U1 2
U2 10
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
   MELVILLE, NY 11747-4501 USA
SN 0021-8979
J9 J APPL PHYS
JI J. Appl. Phys.
PD APR 28
PY 2013
VL 113
IS 16
AR 169901
DI 10.1063/1.4803125
PG 1
WC Physics, Applied
SC Physics
GA 138ZF
UT WOS:000318550300074
ER

PT J
AU Kimling, J
   Gerhardt, T
   Kobs, A
   Vogel, A
   Wintz, S
   Im, MY
   Fischer, P
   Oepen, HP
   Merkt, U
   Meier, G
AF Kimling, Judith
   Gerhardt, Theo
   Kobs, Andre
   Vogel, Andreas
   Wintz, Sebastian
   Im, Mi-Young
   Fischer, Peter
   Oepen, Hans Peter
   Merkt, Ulrich
   Meier, Guido
TI Tuning of the nucleation field in nanowires with perpendicular magnetic
   anisotropy
SO JOURNAL OF APPLIED PHYSICS
LA English
DT Article
ID DOMAIN-WALL; CO/PT MULTILAYERS; REVERSAL; PROPAGATION; ELEMENTS; FILMS
AB We report on domain nucleation in nanowires consisting of Co/Pt multilayers with perpendicular magnetic anisotropy that are patterned by electron-beam lithography, sputter deposition, and lift-off processing. It is found that the nucleation field can be tuned by changing the geometry of the wire ends. A reduction of the nucleation field by up to 60% is achieved when the wire ends are designed as tips. This contrasts with the behavior of wires with in-plane anisotropy where the nucleation field increases when triangular-pointed ends are used. In order to clarify the origin of the reduction of the nucleation field, micromagnetic simulations are employed. The effect cannot be explained by the lateral geometrical variation but is attributable to a local reduction of the perpendicular anisotropy caused by shadowing effects due to the resist mask during sputter deposition of the multilayer. (C) 2013 AIP Publishing LLC
C1 [Kimling, Judith; Gerhardt, Theo; Kobs, Andre; Vogel, Andreas; Oepen, Hans Peter; Merkt, Ulrich; Meier, Guido] Univ Hamburg, Inst Angew Phys, D-20355 Hamburg, Germany.
   [Kimling, Judith; Gerhardt, Theo; Kobs, Andre; Vogel, Andreas; Oepen, Hans Peter; Merkt, Ulrich; Meier, Guido] Univ Hamburg, Zentrum Mikrostrukturforsch Hamburg, D-20355 Hamburg, Germany.
   [Wintz, Sebastian] Helmholtz Zentrum Dresden Rossendorf, Inst Ionenstrahlphys & Mat Forsch, D-01314 Dresden, Germany.
   [Im, Mi-Young; Fischer, Peter] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Ctr Xray Opt, Berkeley, CA 94720 USA.
RP Kimling, J (reprint author), Univ Hamburg, Inst Angew Phys, Jungiusstr 11, D-20355 Hamburg, Germany.
RI Wintz, Sebastian/E-3456-2012; Fischer, Peter/A-3020-2010
OI Wintz, Sebastian/0000-0001-6138-8078; Fischer, Peter/0000-0002-9824-9343
FU Deutsche Forschungsgemeinschaft [Graduiertenkolleg 1286,
   Sonderforschungsbereich 668]; Office of Science, Office of Basic Energy
   Sciences, of the U.S. Department of Energy [DE-AC02-05-CH11231]
FX The authors gratefully acknowledge financial support by the Deutsche
   Forschungsgemeinschaft via the Graduiertenkolleg 1286 and the
   Sonderforschungsbereich 668. The operation of the x-ray microscope is
   supported by the Director, Office of Science, Office of Basic Energy
   Sciences, of the U.S. Department of Energy under Contract No.
   DE-AC02-05-CH11231.
NR 45
TC 8
Z9 8
U1 1
U2 31
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
   MELVILLE, NY 11747-4501 USA
SN 0021-8979
J9 J APPL PHYS
JI J. Appl. Phys.
PD APR 28
PY 2013
VL 113
IS 16
AR 163902
DI 10.1063/1.4802687
PG 6
WC Physics, Applied
SC Physics
GA 138ZF
UT WOS:000318550300035
ER

PT J
AU Saeed, Y
   Singh, N
   Parker, D
   Schwingenschlogl, U
AF Saeed, Y.
   Singh, N.
   Parker, D.
   Schwingenschloegl, U.
TI Thermoelectric performance of electron and hole doped PtSb2
SO JOURNAL OF APPLIED PHYSICS
LA English
DT Article
ID SEMICONDUCTING PROPERTIES; PLATINUM ANTIMONIDE; SINGLE-CRYSTAL;
   BAND-STRUCTURE; APPROXIMATION
AB We investigate the thermoelectric properties of electron and hole doped PtSb2. Our results show that for doping of 0.04 holes per unit cell (1.5 x 10(20) cm(-3)) PtSb2 shows a high Seebeck coefficient at room temperature, which can also be achieved at other temperatures by controlling the carrier concentration (both electron and hole). The electrical conductivity becomes temperature independent when the doping exceeds some 0.2 electrons/holes per unit cell. The figure of merit at 800 K in electron and hole doped PtSb2 is comparatively low at 0.13 and 0.21, respectively, but may increase significantly with As alloying due to the likely opening of a band gap and reduction of the lattice thermal conductivity. (C) 2013 AIP Publishing LLC.
C1 [Saeed, Y.; Singh, N.; Schwingenschloegl, U.] KAUST, Phys Sci & Engn Div, Thuwal 239556900, Saudi Arabia.
   [Parker, D.] Oak Ridge Natl Lab, Mat Sci & Technol Div, Oak Ridge, TN 37831 USA.
RP Saeed, Y (reprint author), KAUST, Phys Sci & Engn Div, Thuwal 239556900, Saudi Arabia.
EM udo.schwingenschlogl@kaust.edu.sa
RI Saeed, Yasir/G-9343-2016
FU Solid State Solar-Thermal Energy Conversion Center (S3 TEC), an Energy
   Frontier Research Center; US Department of Energy, Office of Science,
   Office of Basic Energy Sciences [DE-SC0001299/DE-FG02-09ER46577]
FX This research was supported by the Solid State Solar-Thermal Energy
   Conversion Center (S3 TEC), an Energy Frontier Research Center funded by
   the US Department of Energy, Office of Science, Office of Basic Energy
   Sciences under Award No. DE-SC0001299/DE-FG02-09ER46577 (DP).
   Computational resources have been provided by KAUST IT.
NR 27
TC 8
Z9 8
U1 2
U2 37
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
   MELVILLE, NY 11747-4501 USA
SN 0021-8979
J9 J APPL PHYS
JI J. Appl. Phys.
PD APR 28
PY 2013
VL 113
IS 16
AR 163706
DI 10.1063/1.4803145
PG 5
WC Physics, Applied
SC Physics
GA 138ZF
UT WOS:000318550300030
ER

PT J
AU Novikov, VN
   Schweizer, KS
   Sokolov, AP
AF Novikov, V. N.
   Schweizer, K. S.
   Sokolov, A. P.
TI Coherent neutron scattering and collective dynamics on mesoscale
SO JOURNAL OF CHEMICAL PHYSICS
LA English
DT Article
ID LIQUID-GLASS TRANSITION; SUPERCOOLED LIQUIDS; ALPHA-RELAXATION;
   HARD-SPHERE; SPIN-ECHO; DIFFUSION; HETEROGENEITY; SUSPENSIONS
AB By combining, and modestly extending, a variety of theoretical concepts for the dynamics of liquids in the supercooled regime, we formulate a simple analytic model for the temperature and wavevector dependent collective density fluctuation relaxation time that is measurable using coherent dynamic neutron scattering. Comparison with experiments on the ionic glass-forming liquid Ca-K-NO3 in the lightly supercooled regime suggests the model captures the key physics in both the local cage and mesoscopic regimes, including the unusual wavevector dependence of the collective structural relaxation time. The model is consistent with the idea that the decoupling between diffusion and viscosity is reflected in a different temperature dependence of the collective relaxation time at intermediate wavevectors and near the main (cage) peak of the static structure factor. More generally, our analysis provides support for the ideas that decoupling information and growing dynamic length scales can be at least qualitatively deduced by analyzing the collective relaxation time as a function of temperature and wavevector, and that there is a strong link between dynamic heterogeneity phenomena at the single and many particle level. Though very simple, the model can be applied to other systems, such as molecular liquids. (C) 2013 AIP Publishing LLC.
C1 [Novikov, V. N.; Sokolov, A. P.] Univ Tennessee, Dept Chem, Knoxville, TN 37996 USA.
   [Novikov, V. N.; Sokolov, A. P.] Univ Tennessee, Joint Inst Neutron Sci, Knoxville, TN 37996 USA.
   [Novikov, V. N.; Sokolov, A. P.] Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN 37831 USA.
   [Schweizer, K. S.] Univ Illinois, Dept Mat Sci, Urbana, IL 61801 USA.
   [Schweizer, K. S.] Univ Illinois, Frederick Seitz Mat Res Lab, Urbana, IL 61801 USA.
RP Novikov, VN (reprint author), Univ Tennessee, Dept Chem, Knoxville, TN 37996 USA.
EM novikov@utk.edu; kschweiz@illinois.edu; sokolov@utk.edu
FU Division of Materials Science and Engineering, U.S. Department of
   Energy, Office of Basic Energy Sciences via Oak Ridge National
   Laboratory; Laboratory Directed Research and Development Program at the
   Oak Ridge National Laboratory
FX A.P.S. and K.S.S. acknowledge financial support from the Division of
   Materials Science and Engineering, U.S. Department of Energy, Office of
   Basic Energy Sciences via Oak Ridge National Laboratory. V.N.N.
   acknowledges support from the Laboratory Directed Research and
   Development Program at the Oak Ridge National Laboratory, managed by
   UT-Battelle, LLC, for the U.S. Department of Energy.
NR 36
TC 9
Z9 9
U1 3
U2 55
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
   MELVILLE, NY 11747-4501 USA
SN 0021-9606
J9 J CHEM PHYS
JI J. Chem. Phys.
PD APR 28
PY 2013
VL 138
IS 16
AR 164508
DI 10.1063/1.4802771
PG 6
WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical
SC Chemistry; Physics
GA 138ZK
UT WOS:000318550800058
PM 23635158
ER

PT J
AU Pradhan, GB
   Balakrishnan, N
   Kendrick, BK
AF Pradhan, G. B.
   Balakrishnan, N.
   Kendrick, Brian K.
TI Ultracold collisions of O(D-1) and H-2: The effects of H-2 vibrational
   excitation on the production of vibrationally and rotationally excited
   OH
SO JOURNAL OF CHEMICAL PHYSICS
LA English
DT Article
ID QUANTUM REACTIVE SCATTERING; DIFFERENTIAL CROSS-SECTION;
   POTENTIAL-ENERGY SURFACES; REACTION DYNAMICS; SYMMETRIC REPRESENTATION;
   INSERTION REACTION; CHEMICAL-REACTIONS; MOLECULAR-BEAMS; 3-BODY
   PROBLEMS; HD REACTIONS
AB A quantum dynamics study of the O(D-1) + H-2(v = 0 - 2, j = 0) system has been carried out using the potential energy surfaces of Dobbyn and Knowles [Mol. Phys. 91, 1107 (1997)]. A time-independent quantum mechanical method based on hyperspherical coordinates is adopted for the dynamics calculations. Energy dependent cross section, probability, and rate coefficients are computed for the elastic, inelastic, and reactive channels over collision energies ranging from the ultracold to thermal regimes and for total angular momentum quantum number J = 0. The effect of initial vibrational excitation of the H-2 molecule on vibrational and rotational populations of the OH product is investigated as a function of the collision energy. Comparison of results for vibrational levels v = 0 - 2 of H-2 demonstrates that the vibrational excitation of H-2 and its non-reactive relaxation pathway play a minor role in the overall collisional outcome of O(D-1) and H-2. It is also found that while the state-resolved product vibrational distributions are sensitive to the initial collision energy and H-2 vibrational level, the product rotational distribution depicts an inverted population that is largely insensitive to initial conditions. Rate coefficients evaluated using a J-shifting approximation show reasonable agreement with available theoretical and experimental results suggesting that the J-shifting approximation may be used to evaluate the rate coefficients for O(D-1) + H-2 reaction. (C) 2013 AIP Publishing LLC.
C1 [Pradhan, G. B.; Balakrishnan, N.] Univ Nevada, Dept Chem, Las Vegas, NV 89154 USA.
   [Kendrick, Brian K.] Los Alamos Natl Lab, Theoret Div T1, Los Alamos, NM 87545 USA.
RP Pradhan, GB (reprint author), Univ Nevada, Dept Chem, Las Vegas, NV 89154 USA.
FU NSF [PHY-1205838, ATM-0635715]; ARO MURI Grant [W911NF-12-1-0476]; US
   Department of Energy at Los Alamos National Laboratory; National
   Security Administration of the US Department of Energy
   [DE-AC52-06NA25396]
FX This work was supported in part by NSF Grant Nos. PHY-1205838 (N.B.) and
   ATM-0635715 (N.B.), and ARO MURI Grant No. W911NF-12-1-0476.
   Computational support by National Supercomputing Center for Energy and
   the Environment at UNLV is gratefully acknowledged. B. K. K.
   acknowledges that part of this work was done under the auspices of the
   US Department of Energy at Los Alamos National Laboratory. Los Alamos
   National Laboratory is operated by Los Alamos National Security, LLC,
   for the National Security Administration of the US Department of Energy
   under Contract No. DE-AC52-06NA25396.
NR 83
TC 9
Z9 9
U1 2
U2 26
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
   MELVILLE, NY 11747-4501 USA
SN 0021-9606
J9 J CHEM PHYS
JI J. Chem. Phys.
PD APR 28
PY 2013
VL 138
IS 16
AR 164310
DI 10.1063/1.4802476
PG 8
WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical
SC Chemistry; Physics
GA 138ZK
UT WOS:000318550800041
PM 23635141
ER

PT J
AU Csanak, G
   Fontes, CJ
   Inal, MK
   Kilcrease, DP
AF Csanak, G.
   Fontes, C. J.
   Inal, M. K.
   Kilcrease, D. P.
TI Creation, destruction, and transfer of atomic multipole moments by
   electron scattering: Liouville-space formulation
SO JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS
LA English
DT Article
ID RELAXATION; OPERATOR; PHASE
AB In previous works, expressions for the atomic multipole moment cross sections were derived from a traditional collision approach. In the present work, we have derived the fundamental formula (see equation (35)) from which all of the atomic multipole moment cross sections can be obtained by using Liouville-space methods introduced by Fano (1963 Phys. Rev. 131 259). This simple, elegant formula is an expression for the multipole cross sections in terms of the Liouville-space transition operator (sometimes referred to as the tetradic transition matrix or the transition superoperator). The transition superoperator, in turn, can be expressed in terms of the traditional quantum mechanical transition operators via a formula which is sometimes referred to as 'Fano's convolution formula'. Upon application of this formula to our Liouville-space expression for the multipole cross sections, the resulting cross section formulae are identical to those obtained in previous works. Establishing this connection with the Liouville-space formalism allows us to apply powerful group theoretical techniques in order to obtain expressions of practical interest. As a specific example, we consider the transition rate for the final-state multipole moment which can be obtained via the use of a 'connecting factor' from the initial values of the multipole moments. The 'connecting factor', in turn, is expressed in this work as a Liouville-space matrix element of the tetradic transition matrix. Based on this expression and the symmetry properties of the electron-atom collisional system, certain symmetry relations are obtained for the 'connecting factors'. Since these factors are proportional to the multipole cross sections, corresponding relations are also obtained for those cross sections, which results in a reduction in the number of values that needs to be calculated for plasma modelling applications. An additional corollary of practical importance is that, in the case of cylindrically symmetric plasmas, the same symmetry relations also hold for the multipole rate coefficients. We provide an explicit derivation of this new, important result.
C1 [Csanak, G.; Kilcrease, D. P.] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA.
   [Fontes, C. J.] Los Alamos Natl Lab, Computat Phys Div, Los Alamos, NM 87545 USA.
   [Inal, M. K.] A Belkaid Univ, Dept Phys, Tilimsen 13000, Algeria.
RP Csanak, G (reprint author), Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA.
EM cjf@lanl.gov
OI Kilcrease, David/0000-0002-2319-5934
FU National Nuclear Security Administration of the US Department of Energy
   at Los Alamos National Laboratory; DGRSDT, Algerian Ministry of Higher
   Education and Research [PNR08/43/36/2011/ATRST];  [DE-AC52-06NA25396]
FX This work was carried out in part under the auspices of the National
   Nuclear Security Administration of the US Department of Energy at Los
   Alamos National Laboratory and supported by contract no
   DE-AC52-06NA25396. One of us (MKI) gratefully acknowledges support from
   DGRSDT, Algerian Ministry of Higher Education and Research
   (PNR08/43/36/2011/ATRST).
NR 37
TC 3
Z9 3
U1 1
U2 4
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0953-4075
J9 J PHYS B-AT MOL OPT
JI J. Phys. B-At. Mol. Opt. Phys.
PD APR 28
PY 2013
VL 46
IS 8
AR 085202
DI 10.1088/0953-4075/46/8/085202
PG 10
WC Optics; Physics, Atomic, Molecular & Chemical
SC Optics; Physics
GA 123KB
UT WOS:000317386800008
ER

PT J
AU Ferouani, AK
   Inal, MK
   Csanak, G
AF Ferouani, A. K.
   Inal, M. K.
   Csanak, G.
TI Ne IX line G-ratio in a non-Maxwellian and anisotropic plasma
SO JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS
LA English
DT Article
ID HELIUM-LIKE IONS; ELECTRON-IMPACT EXCITATION; DIELECTRONIC SATELLITE
   SPECTRA; HEATED TOKAMAK PLASMAS; FLEXIBLE ATOMIC CODE; HE-LIKE IONS;
   ENERGY-DISTRIBUTIONS; DENSITY DIAGNOSTICS; RATE COEFFICIENTS; ACTIVE
   REGIONS
AB We have theoretically studied how the presence of a small proportion of energetic beam electrons mixed to a bulk of Maxwellian electrons in a hot plasma affects the temperature-dependent intensity ratio G = (x + y + z)/omega of the helium-like triplet intercombination (x, y) and forbidden (z) lines to the singlet resonance line (omega). By modelling the electron distribution function as a combination of a Maxwellian isotropic component and a monoenergetic beam component, detailed calculations of the G ratio of the Ne8+ lines have been performed for temperatures T-e of the Maxwellian component and kinetic energies e(0) of the beam component in the ranges 10(6)-10(7) K and 1.5-25 keV, respectively. A magnetic sublevel-to-magnetic sublevel collisional-radiative model has been used for determining the populations of the upper magnetic sublevels of the four lines at an electron density below 10(13) cm(-3). Excitations from the ground 1s(2) S-1(0) and metastable 1s2s S-3(1) magnetic sublevels to the 1snl (n=2-4) magnetic sublevels as well as the inner-shell ionization of the lithium-like ion in its ground level were taken into account. All basic atomic data, including the radiative transition probabilities and the collisional excitation and ionization cross sections, were computed using the flexible atomic code. It is found that the contribution of a 5% fraction of the beam component can reduce the G ratio by a factor of 30 at T-e = 10(6) K and of 2.4 at T-e = 3 x 10(6) K. Our calculations also indicate that the effect of directionality of the beam component on G is negligible for e(0) above similar to 10 keV and that for a given T-e, G is practically insensitive to variations in e(0) above similar to 7 keV.
C1 [Ferouani, A. K.] Ecole Preparatoire Sci & Tech, Dept Phys, Tilimsen 13000, Algeria.
   [Inal, M. K.] Univ Belkaid, Fac Sci, Dept Phys, Tilimsen 13000, Algeria.
   [Csanak, G.] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA.
RP Ferouani, AK (reprint author), Ecole Preparatoire Sci & Tech, Dept Phys, Tilimsen 13000, Algeria.
EM m_inal@mail.univ-tlemcen.dz
FU DGRSDT, Algerian Ministry of Higher Education and Research
   [PNR-08/43/36/2011/ATRST]; National Nuclear Security Administration of
   the US Department of Energy at Los Alamos National Laboratory; 
   [DE-AC52-06NA25396]
FX MKI gratefully acknowledges support from DGRSDT, Algerian Ministry of
   Higher Education and Research (PNR-08/43/36/2011/ATRST). The work of one
   of us (GC) was carried out in part under the auspices of the National
   Nuclear Security Administration of the US Department of Energy at Los
   Alamos National Laboratory and supported by contract no
   DE-AC52-06NA25396.
NR 55
TC 2
Z9 2
U1 1
U2 5
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0953-4075
J9 J PHYS B-AT MOL OPT
JI J. Phys. B-At. Mol. Opt. Phys.
PD APR 28
PY 2013
VL 46
IS 8
AR 085701
DI 10.1088/0953-4075/46/8/085701
PG 15
WC Optics; Physics, Atomic, Molecular & Chemical
SC Optics; Physics
GA 123KB
UT WOS:000317386800017
ER

PT J
AU Shrivastava, M
   Zelenyuk, A
   Imre, D
   Easter, R
   Beranek, J
   Zaveri, RA
   Fast, J
AF Shrivastava, Manish
   Zelenyuk, Alla
   Imre, Dan
   Easter, Richard
   Beranek, Josef
   Zaveri, Rahul A.
   Fast, Jerome
TI Implications of low volatility SOA and gas-phase fragmentation reactions
   on SOA loadings and their spatial and temporal evolution in the
   atmosphere
SO JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
LA English
DT Article
ID SECONDARY ORGANIC AEROSOL; BASIS-SET APPROACH; MEXICO-CITY; EVAPORATION
   KINETICS; ACCRETION REACTIONS; PARTICULATE MATTER; OLIGOMER FORMATION;
   ALPHA-PINENE; PARTICLES; OXIDATION
AB We investigate issues related to volatility and multi-generational gas-phase aging parameterizations affecting the formation and evolution of secondary organic aerosol (SOA) in models. We show that when assuming realistic values for the mass accommodation coefficient, experimentally observed SOA evaporation rates imply significantly lower "effective volatility" than those derived from SOA growth in smog chambers, pointing to the role of condensed phase processes and suggesting that models need to use different parameters to describe the formation and evolution of SOA. We develop a new, experimentally driven paradigm to represent SOA as a non-absorbing semi-solid with very low "effective volatility." We modify both a box model and a 3D chemical transport model, to include simplified parameterizations capturing the first-order effects of gas-phase fragmentation reactions and investigate the implications of treating SOA as a non-volatile, non-absorbing semi-solid (NVSOA). Box model simulations predict SOA loadings decrease with increasing fragmentation, and similar SOA loadings are calculated in the traditional, semi-volatile (SVSOA) approach and with the new paradigm (NVSOA) before evaporation reduces loadings of SVSOA. Box-model-calculated O:C ratios increase with aging in both the SVSOA and the NVSOA paradigms. Consistent with box model results, 3D model simulations demonstrate that predicted SOA loadings decrease with the addition of fragmentation reactions. The NVSOA paradigm predicts higher SOA loadings compared to the SVSOA paradigm over nearly the entire 3D modeling domain, with larger differences close to the surface and in regions where higher dilution favors SVSOA evaporation.
C1 [Shrivastava, Manish; Zelenyuk, Alla; Easter, Richard; Beranek, Josef; Zaveri, Rahul A.; Fast, Jerome] Pacific NW Natl Lab, Richland, WA 99352 USA.
   [Imre, Dan] Imre Consulting, Richland, WA USA.
RP Shrivastava, M (reprint author), Pacific NW Natl Lab, Richland, WA 99352 USA.
EM ManishKumar.Shrivastava@pnl.gov
OI Zaveri, Rahul/0000-0001-9874-8807
FU U. S. Department of Energy Office of Biological and Environmental
   Research (Atmospheric Research Program); Office of Basic Energy
   Sciences, Division of Chemical Sciences, Geosciences, and Biosciences;
   US Department of Energy by Battelle Memorial Institute [DE-AC0676RL0
   1830]
FX The authors thank Neil Donahue, Evan Abramson, and Elaine Chapman for
   helpful discussions; and Jose Jimenez, Peter DeCarlo, Allison Aiken, and
   Ingrid Ulbrich (University of Colorado) for providing AMS data. The
   authors also thank the anonymous reviewers whose critical comments
   helped to improve this manuscript significantly. This work was supported
   by the U. S. Department of Energy Office of Biological and Environmental
   Research (Atmospheric Research Program) and Office of Basic Energy
   Sciences, Division of Chemical Sciences, Geosciences, and Biosciences.
   PNNL is operated by the US Department of Energy by Battelle Memorial
   Institute undercontract No. DE-AC0676RL0 1830.
NR 65
TC 29
Z9 30
U1 6
U2 93
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 2169-897X
EI 2169-8996
J9 J GEOPHYS RES-ATMOS
JI J. Geophys. Res.-Atmos.
PD APR 27
PY 2013
VL 118
IS 8
BP 3328
EP 3342
DI 10.1002/jgrd.50160
PG 15
WC Meteorology & Atmospheric Sciences
SC Meteorology & Atmospheric Sciences
GA 155JQ
UT WOS:000319744200026
ER

PT J
AU Chylla, RA
   Van Acker, R
   Kim, H
   Azapira, A
   Mukerjee, P
   Markley, JL
   Storme, V
   Boerjan, W
   Ralph, J
AF Chylla, Roger A.
   Van Acker, Rebecca
   Kim, Hoon
   Azapira, Ali
   Mukerjee, Purba
   Markley, John L.
   Storme, Veronique
   Boerjan, Wout
   Ralph, John
TI Plant cell wall profiling by fast maximum likelihood reconstruction
   (FMLR) and region-of-interest (ROI) segmentation of solution-state 2D
   H-1-C-13 NMR spectra
SO BIOTECHNOLOGY FOR BIOFUELS
LA English
DT Article
DE Lignin composition; Spectral deconvolution; Maximum likelihood; NMR
   spectroscopy; Multivariate data analysis
ID LIGNIN BIOSYNTHESIS; NORMALIZATION; METABOLITES; RESPONSES; BIOFUELS;
   SYSTEMS; HSQC
AB Background: Interest in the detailed lignin and polysaccharide composition of plant cell walls has surged within the past decade partly as a result of biotechnology research aimed at converting biomass to biofuels. High-resolution, solution-state 2D H-1-C-13 HSQC NMR spectroscopy has proven to be an effective tool for rapid and reproducible fingerprinting of the numerous polysaccharides and lignin components in unfractionated plant cell wall materials, and is therefore a powerful tool for cell wall profiling based on our ability to simultaneously identify and comparatively quantify numerous components within spectra generated in a relatively short time. However, assigning peaks in new spectra, integrating them to provide relative component distributions, and producing color-assigned spectra, are all current bottlenecks to the routine use of such NMR profiling methods.
   Results: We have assembled a high-throughput software platform for plant cell wall profiling that uses spectral deconvolution by Fast Maximum Likelihood Reconstruction (FMLR) to construct a mathematical model of the signals present in a set of related NMR spectra. Combined with a simple region of interest (ROI) table that maps spectral regions to NMR chemical shift assignments of chemical entities, the reconstructions can provide rapid and reproducible fingerprinting of numerous polysaccharide and lignin components in unfractionated cell wall material, including derivation of lignin monomer unit (S: G: H) ratios or the so-called SGH profile. Evidence is presented that ROI-based amplitudes derived from FMLR provide a robust feature set for subsequent multivariate analysis. The utility of this approach is demonstrated on a large transgenic study of Arabidopsis requiring concerted analysis of 91 ROIs (including both assigned and unassigned regions) in the lignin and polysaccharide regions of almost 100 related 2D H-1-C-13 HSQC spectra.
   Conclusions: We show that when a suitable number of replicates are obtained per sample group, the correlated patterns of enriched and depleted cell wall components can be reliably and objectively detected even prior to multivariate analysis. The analysis methodology has been implemented in a publicly-available, cross-platform (Windows/Mac/Linux), web-enabled software application that enables researchers to view and publish detailed annotated spectra in addition to summary reports in simple spreadsheet data formats. The analysis methodology is not limited to studies of plant cell walls but is amenable to any NMR study where ROI segmentation techniques generate meaningful results. Please see Research Article: http://www.biotechnologyforbiofuels.com/content/6/1/46/.
C1 [Chylla, Roger A.; Kim, Hoon; Azapira, Ali; Mukerjee, Purba; Ralph, John] Wisconsin Energy Inst, DOE Great Lakes Bioenergy Res Ctr, Madison, WI 53726 USA.
   [Chylla, Roger A.; Kim, Hoon; Markley, John L.; Ralph, John] Univ Wisconsin, Dept Biochem, Madison, WI 53706 USA.
   [Van Acker, Rebecca; Storme, Veronique; Boerjan, Wout] Flanders Inst Biotechnol VIB, Dept Plant Syst Biol, B-9052 Ghent, Belgium.
   [Van Acker, Rebecca; Storme, Veronique; Boerjan, Wout] Univ Ghent, Dept Plant Biotechnol & Bioinformat, B-9052 Ghent, Belgium.
RP Chylla, RA (reprint author), Wisconsin Energy Inst, DOE Great Lakes Bioenergy Res Ctr, 1552 Univ Ave, Madison, WI 53726 USA.
EM rchylla@wisc.edu
OI Boerjan, Wout/0000-0003-1495-510X; Van Acker,
   Rebecca/0000-0002-0092-1155
FU US Department of Energy's Great Lakes Bioenergy Research Center (DOE
   Office of Science) [BER DE FC02 07ER64494]; Ghent University; Agency for
   Innovation by Science and Technology (IWT)
FX This work was supported by the US Department of Energy's Great Lakes
   Bioenergy Research Center (DOE Office of Science BER DE FC02 07ER64494)
   and the Ghent University's Multidisciplinary Research Partnership
   'Biotechnology for a Sustainable Economy'. RVA is indebted to the Agency
   for Innovation by Science and Technology (IWT) for a pre-doctoral
   fellowship. We are grateful to Gustav Sundqvist and Prof. Vincent Bulone
   for preparing the cell wall materials from all samples that were used in
   this study; these were used for preparing the NMR samples.
NR 29
TC 7
Z9 7
U1 0
U2 36
PU BIOMED CENTRAL LTD
PI LONDON
PA 236 GRAYS INN RD, FLOOR 6, LONDON WC1X 8HL, ENGLAND
SN 1754-6834
J9 BIOTECHNOL BIOFUELS
JI Biotechnol. Biofuels
PD APR 26
PY 2013
VL 6
AR 45
DI 10.1186/1754-6834-6-45
PG 14
WC Biotechnology & Applied Microbiology; Energy & Fuels
SC Biotechnology & Applied Microbiology; Energy & Fuels
GA 163DO
UT WOS:000320316100001
PM 23622232
ER

PT J
AU Jabbour, D
   Borrusch, MS
   Banerjee, G
   Walton, JD
AF Jabbour, Dina
   Borrusch, Melissa S.
   Banerjee, Goutami
   Walton, Jonathan D.
TI Enhancement of fermentable sugar yields by alpha-xylosidase
   supplementation of commercial cellulases
SO BIOTECHNOLOGY FOR BIOFUELS
LA English
DT Article
DE Aspergillus niger; Trichoderma reesei; Biofuel; Lignocellulose;
   Xyloglucan; Cellulase; Corn stover
ID CELL-WALL POLYSACCHARIDES; ENZYME MIXTURES; XYLOGLUCAN; BIOMASS;
   DECONSTRUCTION; BIOSYNTHESIS; XYLOSE
AB Background: Although alpha-linked xylose is a major constituent of the hemicelluloses of land plants, few secreted alpha-xylosidases have been described from fungi or bacteria. AxlA of Aspergillus niger is a secreted alpha-xylosidase that was earlier shown to promote the release of free glucose (Glc) and xylose (Xyl) from substrates containing alpha-linked xylose, including isoprimeverose (IP), the heptasaccharide subunit of pea xyloglucan (XG), and tamarind XG.
   Results: The utility of AxlA for enhancing release of free Glc and Xyl in combination with commercial enzyme cocktails from dicotyledonous and monocotyledonous plants was examined. Without AxlA supplementation, a mixture of CTec2 and HTec2 (both of which are derived from T. reesei) did not release significant levels of Glc from pea XG or tamarind XG. This is consistent with their lack of detectable alpha-xylosidase activity using model substrates. On alkaline hydrogen peroxide-pretreated corn stover, supplementation of CTec2/HTec2 (at a loading of 2.5 mg/g glucan) with AxlA (at a loading of 8 mg/g glucan) increased Glc yields from 82% to 88% of the total available Glc and increased Xyl yields from 55% to 60%. AxlA supplementation also improved Glc yields from corn stover treated with the commercial cellulase Accellerase 1000. The AxlA enhancement was not a general protein effect because bovine serum albumin or bovine gamm alpha-globulin at similar concentrations did not enhance Glc yields from corn stover in response to CTec2/HTec2. Supplementation of CTec2/HTec2 with AxlA did not enhance Glc release from pretreated green or etiolated pea tissue. However, AxlA did enhance Glc and Xyl yields compared to CTec2/HTec2 alone from another dicotyledonous herbaceous plant, Chenopodium album (lamb's quarters).
   Conclusion: Supplementation of commercial cellulase cocktails with AxlA enhances yields of Glc and Xyl from some biomass substrates under some conditions, and may prove useful in industrial lignocellulose conversion.
C1 [Jabbour, Dina; Borrusch, Melissa S.; Walton, Jonathan D.] Michigan State Univ, Dept Energy, Great Lakes Bioenergy Res Ctr, E Lansing, MI 48824 USA.
   [Jabbour, Dina; Borrusch, Melissa S.; Walton, Jonathan D.] Michigan State Univ, Dept Energy, Plant Res Lab, E Lansing, MI 48824 USA.
RP Walton, JD (reprint author), Michigan State Univ, Dept Energy, Great Lakes Bioenergy Res Ctr, E Lansing, MI 48824 USA.
EM walton@msu.edu
FU U.S. Department of Energy Great Lakes Bioenergy Research Center (DOE
   Office of Science BER) [DE-FC02-07ER64494]; U.S. Department of Energy,
   Office of Basic Energy Sciences, Division of Chemical Sciences,
   Geosciences and Biosciences [DE-FG02-91ER200021]
FX We thank Phil Brumm and David Mead (Lucigen, Inc., Madison, WI) for
   large-scale preparation of AxlA, and Cliff Foster (Great Lakes Bioenergy
   Research Center, Michigan State University) for polysaccharide analysis.
   This work was funded by the U.S. Department of Energy Great Lakes
   Bioenergy Research Center (DOE Office of Science BER DE-FC02-07ER64494)
   and by grant DE-FG02-91ER200021 to the MSU-Plant Research Laboratory
   from the U.S. Department of Energy, Office of Basic Energy Sciences,
   Division of Chemical Sciences, Geosciences and Biosciences.
NR 21
TC 9
Z9 9
U1 1
U2 32
PU BIOMED CENTRAL LTD
PI LONDON
PA 236 GRAYS INN RD, FLOOR 6, LONDON WC1X 8HL, ENGLAND
SN 1754-6834
J9 BIOTECHNOL BIOFUELS
JI Biotechnol. Biofuels
PD APR 26
PY 2013
VL 6
AR 58
DI 10.1186/1754-6834-6-58
PG 8
WC Biotechnology & Applied Microbiology; Energy & Fuels
SC Biotechnology & Applied Microbiology; Energy & Fuels
GA 144HM
UT WOS:000318930300001
PM 23622347
ER

PT J
AU Bazavov, A
   Bernard, C
   Detar, C
   Foley, J
   Freeman, W
   Gottlieb, S
   Heller, UM
   Hetrick, JE
   Kim, J
   Laiho, J
   Levkova, L
   Lightman, M
   Osborn, J
   Qiu, S
   Sugar, RL
   Toussaint, D
   Van de Water, RS
   Zhou, R
AF Bazavov, A.
   Bernard, C.
   DeTar, C.
   Foley, J.
   Freeman, W.
   Gottlieb, Steven
   Heller, U. M.
   Hetrick, J. E.
   Kim, J.
   Laiho, J.
   Levkova, L.
   Lightman, M.
   Osborn, J.
   Qiu, S.
   Sugar, R. L.
   Toussaint, D.
   Van de Water, R. S.
   Zhou, R.
TI Leptonic-Decay-Constant Ratio
   f<INF>K<SUP>+</SUP></INF>/f<INF>pi<SUP>+</SUP></INF> from Lattice QCD
   with Physical Light Quarks
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID MODEL
AB A calculation of the ratio of leptonic decay constants f(K+) / f(pi+) makes possible a precise determination of the ratio of Cabibbo-Kobayashi-Maskawa (CKM) matrix elements vertical bar V-us vertical bar/vertical bar V-ud vertical bar in the standard model, and places a stringent constraint on the scale of new physics that would lead to deviations from unitarity in the first row of the CKM matrix. We compute f(K+) / f(pi+) numerically in unquenched lattice QCD using gauge-field ensembles recently generated that include four flavors of dynamical quarks: up, down, strange, and charm. We analyze data at four lattice spacings a approximate to 0.06, 0.09, 0.12, and 0.15 fm with simulated pion masses down to the physical value 135 MeV. We obtain f(K+) / f(pi+) 1.1947(26)(37), where the errors are statistical and total systematic, respectively. This is our first physics result from our N-f = 2 + 1 + 1 ensembles, and the first calculation of f(K+) / f(pi+) from lattice-QCD simulations at the physical point. Our result is the most precise lattice-QCD determination of f(K+) / f(pi+), with an error comparable to the current world average. When combined with experimental measurements of the leptonic branching fractions, it leads to a precise determination of vertical bar V-us vertical bar/vertical bar V-ud vertical bar 0.2309(9)(4) where the errors are theoretical and experimental, respectively. DOI: 10.1103/PhysRevLett.110.172003
C1 [Bazavov, A.] Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA.
   [Bernard, C.; Lightman, M.] Washington Univ, Dept Phys, St Louis, MO 63130 USA.
   [DeTar, C.; Foley, J.; Levkova, L.; Qiu, S.] Univ Utah, Dept Phys & Astron, Salt Lake City, UT 84112 USA.
   [Freeman, W.] George Washington Univ, Dept Phys, Washington, DC 20052 USA.
   [Gottlieb, Steven; Zhou, R.] Indiana Univ, Dept Phys, Bloomington, IN 47405 USA.
   [Heller, U. M.] Amer Phys Soc, New York, NY 11961 USA.
   [Hetrick, J. E.] Univ Pacific, Dept Phys, Stockton, CA 95211 USA.
   [Kim, J.; Levkova, L.; Toussaint, D.] Univ Arizona, Dept Phys, Tucson, AZ 85721 USA.
   [Laiho, J.] Univ Glasgow, SUPA Dept Phys & Astron, Glasgow G12 8QQ, Lanark, Scotland.
   [Laiho, J.] Syracuse Univ, Dept Phys, Syracuse, NY 13244 USA.
   [Osborn, J.] Argonne Natl Lab, Argonne Leadership Comp Facil, Argonne, IL 60439 USA.
   [Sugar, R. L.] Univ Calif Santa Barbara, Dept Phys, Santa Barbara, CA 93106 USA.
   [Van de Water, R. S.] Fermilab Natl Accelerator Lab, Dept Theoret Phys, Batavia, IL 60510 USA.
RP Bazavov, A (reprint author), Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA.
EM cb@lump.wustl.edu; doug@physics.arizona.edu; ruthv@fnal.gov
RI zhou, ran/O-6309-2014; 
OI zhou, ran/0000-0002-0640-1820; Hetrick, James/0000-0002-0740-2251
FU Office of Science of the United States Department of Energy; National
   Center for Atmospheric Research; National Center for Supercomputing
   Applications; National Institute for Computational Science; Texas
   Advanced Computing Center; National Science Foundation's Teragrid/XSEDE;
   Blue Waters Programs; U.S. Department of Energy [DE-FG02-91ER40628,
   DE-FC02-06ER41446, DE-FG02-91ER40661, DE-FG02-85ER40237,
   DE-FG02-04ER-41298, DE-FC02-06ER-41439, DE-AC02-98CH10886,
   DE-AC02-07CH11359]; National Science Foundation [PHY-1067881,
   PHY-0757333, PHY-0703296, PHY-0555397, PHY-0903536, PHY-0757035];
   Science and Technology Facilities Council; Scottish Universities Physics
   Alliance
FX We thank Christine Davies and Andreas Kronfeld for useful discussions
   and comments on the manuscript. We thank Maarten Golterman for pointing
   out a critical typo in the abstract. Computations for this work were
   carried out with resources provided by the USQCD Collaboration, the
   Argonne Leadership Computing Facility, and the National Energy Research
   Scientific Computing Center, which are funded by the Office of Science
   of the United States Department of Energy; and with resources provided
   by the National Center for Atmospheric Research, the National Center for
   Supercomputing Applications, the National Institute for Computational
   Science, and the Texas Advanced Computing Center, which are funded
   through the National Science Foundation's Teragrid/XSEDE and Blue Waters
   Programs. We thank the staffs of NICS, ALCF, and NCSA for their
   assistance with block time grants and Early Science usage. This work was
   supported in part by the U.S. Department of Energy under Grants No.
   DE-FG02-91ER40628 (C. B., M. L.), No. DE-FC02-06ER41446 (C. D., L. L.,
   J. F.), No. DE-FG02-91ER40661 (S. G., R. Z.), No. DE-FG02-85ER40237 (J.
   L.), No. DE-FG02-04ER-41298 (D. T.) and No. DE-FC02-06ER-41439 (J. K.,
   A. B., L. L); by the National Science Foundation under Grants No.
   PHY-1067881, No. PHY-0757333, No. PHY-0703296 (C. D., L. L., J. F., S.
   Q.), No. PHY-0555397, (A. B.), No. PHY-0903536, (A. B., J. K.), and No.
   PHY-0757035 (R. S.); and by the Science and Technology Facilities
   Council and the Scottish Universities Physics Alliance (J. L.). This
   manuscript has been coauthored by employees of Brookhaven Science
   Associates, LLC, under Contract No. DE-AC02-98CH10886 with the U.S.
   Department of Energy. Fermilab is operated by Fermi Research Alliance,
   LLC, under Contract No. DE-AC02-07CH11359 with the U.S. Department of
   Energy.
NR 57
TC 15
Z9 16
U1 0
U2 7
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD APR 26
PY 2013
VL 110
IS 17
AR 172003
DI 10.1103/PhysRevLett.110.172003
PG 6
WC Physics, Multidisciplinary
SC Physics
GA 134LX
UT WOS:000318212800007
PM 23679710
ER

PT J
AU Ji, CR
   Melnitchouk, W
   Thomas, AW
AF Ji, Chueng-Ryong
   Melnitchouk, W.
   Thomas, A. W.
TI Disorder-Assisted Melting and the Glass Transition in Amorphous Solids
   Comment on "Taming the Pion Cloud of the Nucleon''
SO PHYSICAL REVIEW LETTERS
LA English
DT Editorial Material
C1 [Ji, Chueng-Ryong] N Carolina State Univ, Dept Phys, Raleigh, NC 27692 USA.
   [Melnitchouk, W.] Jefferson Lab, Newport News, VA 23606 USA.
   [Thomas, A. W.] Univ Adelaide, Sch Chem & Phys, CSSM, Adelaide, SA 5005, Australia.
   [Thomas, A. W.] Univ Adelaide, Sch Chem & Phys, CoEPP, Adelaide, SA 5005, Australia.
RP Ji, CR (reprint author), N Carolina State Univ, Dept Phys, Raleigh, NC 27692 USA.
RI Ji, Chueng/J-2623-2013
NR 4
TC 8
Z9 8
U1 0
U2 7
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD APR 26
PY 2013
VL 110
IS 17
AR 179101
DI 10.1103/PhysRevLett.110.179101
PG 1
WC Physics, Multidisciplinary
SC Physics
GA 134LX
UT WOS:000318212800024
PM 23679791
ER

PT J
AU Alejo, DM
   Moraes, MP
   Liao, XF
   Dias, CC
   Tulman, ER
   Diaz-San Segundo, F
   Rood, D
   Grubman, MJ
   Silbarte, LK
AF Alejo, Diana M.
   Moraes, Mauro P.
   Liao, Xiaofen
   Dias, Camila C.
   Tulman, Edan R.
   Diaz-San Segundo, Fayna
   Rood, Debra
   Grubman, Marvin J.
   Silbarte, Lawrence K.
TI An adenovirus vectored mucosal adjuvant augments protection of mice
   immunized intranasally with an adenovirus-vectored foot-and-mouth
   disease virus subunit vaccine
SO VACCINE
LA English
DT Article
DE Adenovirus; FMDV; Mucosal immunity; E. coli enterotoxin; Adjuvants; Mice
ID HEAT-LABILE ENTEROTOXIN; ADP-RIBOSYLTRANSFERASE ACTIVITY; T-CELL
   RESPONSES; ESCHERICHIA-COLI; PREEXISTING IMMUNITY; INFECTION; DELIVERY;
   FMDV; PROTEINS; SYSTEM
AB Foot-and-mouth disease virus (FMDV) is a highly contagious pathogen that causes severe morbidity and economic losses to the livestock industry in many countries. The oral and respiratory mucosae are the main ports of entry of FMDV, so the stimulation of local immunity in these tissues may help prevent initial infection and viral spread. E. coli heat-labile enterotoxin (LT) has been described as one of the few molecules that have adjuvant activity at mucosal surfaces. The objective of this study was to evaluate the efficacy of replication-defective adenovirus 5 (Ad5) vectors encoding either of two LT-based mucosal adjuvants, LTB or LTR72. These vectored adjuvants were delivered intranasally to mice concurrent with an Ad5-FMDV vaccine (Ad5-A24) to assess their ability to augment mucosal and systemic humoral immune responses to Ad5-A24 and protection against FMDV. Mice receiving Ad5-A24 plus Ad5-LTR72 had higher levels of mucosal and systemic neutralizing antibodies than those receiving Ad5-A24 alone or Ad5-A24 plus Ad5-LTB. The vaccine plus Ad5-LTR72 group also demonstrated 100% survival after intradermal challenge with a lethal dose of homologous FMDV serotype A24. These results suggest that Ad5-LTR72 could be used as an important tool to enhance mucosal and systemic immunity against FMDV and potentially other pathogens with a common route of entry. (C) 2013 Elsevier Ltd. All rights reserved.
C1 [Alejo, Diana M.] Univ Connecticut, Dept Anim Sci, Storrs, CT 06269 USA.
   [Moraes, Mauro P.; Liao, Xiaofen; Tulman, Edan R.] Univ Connecticut, Dept Pathobiol & Vet Sci, Storrs, CT 06269 USA.
   [Dias, Camila C.] Oak Ridge Inst Sci & Educ, PIADC Res Participat Program, Oak Ridge, TN 37831 USA.
   [Moraes, Mauro P.; Diaz-San Segundo, Fayna; Grubman, Marvin J.] ARS, Plum Isl Anim Dis Ctr, USDA, NAA, Greenport, NY 11944 USA.
   [Rood, Debra; Silbarte, Lawrence K.] Univ Connecticut, Dept Allied Hlth Sci, Storrs, CT 06269 USA.
RP Silbarte, LK (reprint author), Univ Connecticut, Dept Allied Hlth Sci, Storrs, CT 06269 USA.
EM Silbart@uconn.edu
FU USDA-ARS [58-1940-5-520]
FX We thank Marla Koster for her technical support in the development of
   the Ad5-mutants, Dr. T. Hoagland, R. Ramanathan, and Dr. R. Mancini for
   their help and advice in the statistical analysis of the data, and the
   Plum Island animal caretakers for their assistance with the care and
   handling of the animals. This work was supported by USDA-ARS under
   cooperative agreement 58-1940-5-520 to the University of Connecticut
   Center of Excellence for Vaccine Research. Any opinions, findings,
   conclusion, or recommendations expressed in this publication are those
   of the authors and do not necessarily reflect the view of the U.S.
   Department of Agriculture.
NR 50
TC 8
Z9 8
U1 0
U2 14
PU ELSEVIER SCI LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
SN 0264-410X
EI 1873-2518
J9 VACCINE
JI Vaccine
PD APR 26
PY 2013
VL 31
IS 18
BP 2302
EP 2309
DI 10.1016/j.vaccine.2013.02.060
PG 8
WC Immunology; Medicine, Research & Experimental
SC Immunology; Research & Experimental Medicine
GA 135ZP
UT WOS:000318329500013
PM 23499593
ER

PT J
AU Ly, S
   Altman, R
   Petrlova, J
   Lin, Y
   Hilt, S
   Huser, T
   Laurence, TA
   Voss, JC
AF Ly, Sonny
   Altman, Robin
   Petrlova, Jitka
   Lin, Yu
   Hilt, Silvia
   Huser, Thomas
   Laurence, Ted A.
   Voss, John C.
TI Binding of Apolipoprotein E Inhibits the Oligomer Growth of Amyloid-beta
   Peptide in Solution as Determined by Fluorescence Cross-correlation
   Spectroscopy
SO JOURNAL OF BIOLOGICAL CHEMISTRY
LA English
DT Article
ID FAMILIAL ALZHEIMER-DISEASE; TYPE-4 ALLELE; MOUSE MODEL; APOE;
   PATHOGENESIS; PATHWAYS; GENOTYPE; ASSOCIATION; EXCITATION; DEPOSITION
AB One of the primary neuropathological hallmarks of Alzheimer disease is the presence of extracellular amyloid plaques resulting from the aggregation of amyloid-beta (A beta) peptides. The intrinsic disorder of the A beta peptide drives self-association and progressive reordering of the conformation in solution, and this dynamic distribution of A beta complicates biophysical studies. This property poses a challenge for understanding the interaction of A beta with apolipoprotein E (apoE). ApoE plays a pivotal role in the aggregation and clearance of A beta peptides in the brain, and the epsilon 4 allele of APOE is the most significant known genetic modulator of Alzheimer risk. Understanding the interaction between apoE and A beta will provide insight into the mechanism by which different apoE isoforms determine Alzheimer disease risk. Here we applied alternating laser excitation fluorescence cross-correlation spectroscopy to observe the single molecule interaction of A beta with apoE in the hydrated state. The diffusion time of freely diffusing A beta in the absence of apoE shows significant self-aggregation, whereas in the presence of apoE, binding of the protein results in a more stable complex. These results show that apoE slows down the oligomerization of A beta in solution and provide direct insight into the process by which apoE influences the deposition and clearance of A beta peptides in the brain. Furthermore, by developing an approach to remove signals arising from very large A beta aggregates, we show that real-time single particle observations provide access to information regarding the fraction of apoE bound and the stoichiometry of apoE and A beta in the complex.
C1 [Ly, Sonny; Laurence, Ted A.] Lawrence Livermore Natl Lab, Phys & Life Sci Directorate, Livermore, CA 94550 USA.
   [Altman, Robin; Petrlova, Jitka; Hilt, Silvia; Voss, John C.] Univ Calif Davis, Dept Biochem & Mol Med, Davis, CA 95616 USA.
   [Ly, Sonny; Lin, Yu; Huser, Thomas] Univ Calif Davis, NSF Ctr Biophoton Sci & Technol, Sacramento, CA 95817 USA.
RP Laurence, TA (reprint author), Lawrence Livermore Natl Lab, L-470,7000 East Ave, Livermore, CA 94550 USA.
EM Laurence2@llnl.gov; jcvoss@ucdavis.edu
RI Laurence, Ted/E-4791-2011; Huser, Thomas/H-1195-2012
OI Laurence, Ted/0000-0003-1474-779X; Huser, Thomas/0000-0003-2348-7416
FU National Institutes of Health [R01 AG029246]; United States Department
   of Energy by Lawrence Livermore National Laboratory [DE-AC52-07NA27344]
FX This work was supported, in whole or in part, by National Institutes of
   Health Grant R01 AG029246 (to J.C.V.).; This work was also supported by
   the United States Department of Energy by Lawrence Livermore National
   Laboratory under Contract DE-AC52-07NA27344.
NR 52
TC 16
Z9 16
U1 1
U2 34
PU AMER SOC BIOCHEMISTRY MOLECULAR BIOLOGY INC
PI BETHESDA
PA 9650 ROCKVILLE PIKE, BETHESDA, MD 20814-3996 USA
SN 0021-9258
J9 J BIOL CHEM
JI J. Biol. Chem.
PD APR 26
PY 2013
VL 288
IS 17
BP 11628
EP 11635
DI 10.1074/jbc.M112.411900
PG 8
WC Biochemistry & Molecular Biology
SC Biochemistry & Molecular Biology
GA 133RP
UT WOS:000318157600002
PM 23430745
ER

PT J
AU Bu, LT
   Crowley, MF
   Himmel, ME
   Beckham, GT
AF Bu, Lintao
   Crowley, Michael F.
   Himmel, Michael E.
   Beckham, Gregg T.
TI Computational Investigation of the pH Dependence of Loop Flexibility and
   Catalytic Function in Glycoside Hydrolases
SO JOURNAL OF BIOLOGICAL CHEMISTRY
LA English
DT Article
ID CARBOHYDRATE-BINDING MODULE; MOLECULAR-DYNAMICS SIMULATIONS; FREE-ENERGY
   CALCULATIONS; TRICHODERMA-REESEI; CELLOBIOHYDROLASE CEL6A;
   CELLULOMONAS-FIMI; CRYSTAL-STRUCTURE; FORCE-FIELD;
   CONFORMATIONAL-CHANGES; PROCESSIVE CELLULASE
AB Cellulase enzymes cleave glycosidic bonds in cellulose to produce cellobiose via either retaining or inverting hydrolysis mechanisms, which are significantly pH-dependent. Many fungal cellulases function optimally at pH similar to 5, and their activities decrease dramatically at higher or lower pH. To understand the molecular-level implications of pH in cellulase structure, we use a hybrid, solvent-based, constant pH molecular dynamics method combined with pH-based replica exchange to determine the pK(a) values of titratable residues of a glycoside hydrolase (GH) family 6 cellobiohydrolase (Cel6A) and a GH family 7 cellobiohydrolase (Cel7A) from the fungus Hypocrea jecorina. For both enzymes, we demonstrate that a bound substrate significantly affects the pK(a) values of the acid residues at the catalytic center. The calculated pK(a) values of catalytic residues confirm their proposed roles from structural studies and are consistent with the experimentally measured apparent pK(a) values. Additionally, GHs are known to impart a strained pucker conformation in carbohydrate substrates in active sites for catalysis, and results from free energy calculations combined with constant pH molecular dynamics suggest that the correct ring pucker is stable near the optimal pH for both Cel6A and Cel7A. Much longer molecular dynamics simulations of Cel6A and Cel7A with fixed protonation states based on the calculated pK(a) values suggest that pH affects the flexibility of tunnel loops, which likely affects processivity and substrate complexation. Taken together, this work demonstrates several molecular-level effects of pH on GH enzymes important for cellulose turnover in the biosphere and relevant to biomass conversion processes.
C1 [Bu, Lintao; Beckham, Gregg T.] Natl Renewable Energy Lab, Natl Bioenergy Ctr, Golden, CO 80401 USA.
   [Crowley, Michael F.; Himmel, Michael E.] Natl Renewable Energy Lab, Biosci Ctr, Golden, CO 80401 USA.
   [Beckham, Gregg T.] Colorado Sch Mines, Dept Chem Engn, Golden, CO 80401 USA.
RP Bu, LT (reprint author), Natl Renewable Energy Lab, Natl Bioenergy Ctr, 1617 Cole Blvd,MS 3322, Golden, CO 80401 USA.
EM lintao.bu@nrel.gov; gregg.beckham@nrel.gov
RI crowley, michael/A-4852-2013
OI crowley, michael/0000-0001-5163-9398
FU United States Department of Energy Bioenergy Technologies Office; United
   States Department of Energy Office of Energy Efficiency and Renewable
   Energy [DE-AC36-08GO28308]; National Science Foundation TeraGrid Grant
   via Texas Advanced Computing Center Ranger Cluster [TG-MCB090159];
   National Institute for Computational Sciences Kraken Cluster
FX This work was supported by the United States Department of Energy
   Bioenergy Technologies Office. Computational time for this research was
   provided by the National Renewable Energy Laboratory Computational
   Sciences Center supported by the United States Department of Energy
   Office of Energy Efficiency and Renewable Energy under Contract
   DE-AC36-08GO28308 and by National Science Foundation TeraGrid Grant
   TG-MCB090159 via the Texas Advanced Computing Center Ranger Cluster and
   the National Institute for Computational Sciences Kraken Cluster.
NR 80
TC 15
Z9 15
U1 0
U2 59
PU AMER SOC BIOCHEMISTRY MOLECULAR BIOLOGY INC
PI BETHESDA
PA 9650 ROCKVILLE PIKE, BETHESDA, MD 20814-3996 USA
SN 0021-9258
EI 1083-351X
J9 J BIOL CHEM
JI J. Biol. Chem.
PD APR 26
PY 2013
VL 288
IS 17
BP 12175
EP 12186
DI 10.1074/jbc.M113.462465
PG 12
WC Biochemistry & Molecular Biology
SC Biochemistry & Molecular Biology
GA 133RP
UT WOS:000318157600049
PM 23504310
ER

PT J
AU Ciappina, MF
   Pindzola, MS
   Colgan, J
AF Ciappina, M. F.
   Pindzola, M. S.
   Colgan, J.
TI Fully differential cross section for O8+-impact ionization of Li
SO PHYSICAL REVIEW A
LA English
DT Article
ID C6+ SINGLE IONIZATION; IMPACT IONIZATION; HELIUM; ION; COLLISIONS
AB We present various differential cross sections for the single ionization of Li by O8+ ions. We use a time-dependent, close-coupling approach to model the evolution of a one-active-electron wave function in the field of the incoming projectile for a range of impact parameters. In addition, a Fourier transform approach is used to extract differential cross sections for a specific projectile momentum transfer value. This scheme allows us to incorporate information about the interaction of the two heavy nuclei [the so-called nuclear-nuclear (NN) interaction] and to assess its influence in the differential cross sections. We find noticeable differences in the shape of the differential cross sections when we include (neglect) the NN interaction. Our single-differential cross-section calculation shows excellent agreement with experimental data. In addition, recent measured double-differential cross sections as a function of electron energy and transverse momentum transfer are reasonably well reproduced by our theoretical calculations. DOI: 10.1103/PhysRevA.87.042706
C1 [Ciappina, M. F.; Pindzola, M. S.] Auburn Univ, Dept Phys, Auburn, AL 36849 USA.
   [Colgan, J.] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA.
RP Ciappina, MF (reprint author), Auburn Univ, Dept Phys, Auburn, AL 36849 USA.
OI Ciappina, Marcelo/0000-0002-1123-6460; Colgan, James/0000-0003-1045-3858
FU US Department of Energy; US National Science Foundation; National
   Nuclear Security Administration of the US Department of Energy
   [DE-AC5206NA25396]
FX This work was supported in part by grants from the US Department of
   Energy and the US National Science Foundation. Computational work was
   carried out at the National Energy Research Scientific Computing Center
   in Oakland, CA, and the National Institute for Computational Sciences in
   Knoxville, TN. The Los Alamos National Laboratory is operated by Los
   Alamos National Security, LLC, for the National Nuclear Security
   Administration of the US Department of Energy under Contract No.
   DE-AC5206NA25396. We thank Michael Schulz for sending us the
   experimental data in ASCII format.
NR 22
TC 6
Z9 6
U1 0
U2 9
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1050-2947
J9 PHYS REV A
JI Phys. Rev. A
PD APR 26
PY 2013
VL 87
IS 4
AR 042706
DI 10.1103/PhysRevA.87.042706
PG 8
WC Optics; Physics, Atomic, Molecular & Chemical
SC Optics; Physics
GA 133XJ
UT WOS:000318173900006
ER

PT J
AU Pham, TA
   Nguyen, HV
   Rocca, D
   Galli, G
AF Pham, T. Anh
   Huy-Viet Nguyen
   Rocca, Dario
   Galli, Giulia
TI GW calculations using the spectral decomposition of the dielectric
   matrix: Verification, validation, and comparison of methods
SO PHYSICAL REVIEW B
LA English
DT Article
ID DENSITY-FUNCTIONAL APPROXIMATIONS; QUASI-PARTICLE ENERGIES; SPACE-TIME
   METHOD; BAND-STRUCTURE; ELECTRONIC EXCITATIONS; PERTURBATION-THEORY;
   GREENS-FUNCTION; EXACT-EXCHANGE; SEMICONDUCTORS; INSULATORS
AB In a recent paper [Nguyen et al., Phys. Rev. B 85, 081101(R) (2012)] we presented an approach to evaluate quasiparticle energies based on the spectral decomposition of the static dielectric matrix. This method does not require the calculation of unoccupied electronic states or the direct diagonalization of large dielectric matrices, and it avoids the use of plasmon-pole models. The numerical accuracy of the approach is controlled by a single parameter, i.e., the number of eigenvectors used in the spectral decomposition of the dielectric matrix. Here we present a comprehensive validation of the method, encompassing calculations of ionization potentials and electron affinities of various molecules and of band gaps for several crystalline and disordered semiconductors. We demonstrate the efficiency of our approach by carrying out GW calculations for systems with several hundred valence electrons. DOI: 10.1103/PhysRevB.87.155148
C1 [Pham, T. Anh; Rocca, Dario; Galli, Giulia] Univ Calif Davis, Dept Chem, Davis, CA 95616 USA.
   [Pham, T. Anh] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA.
   [Huy-Viet Nguyen] Vietnam Acad Sci & Technol, Inst Phys, Hanoi, Vietnam.
   [Galli, Giulia] Univ Calif Davis, Dept Phys, Davis, CA 95616 USA.
RP Pham, TA (reprint author), Univ Calif Davis, Dept Chem, Davis, CA 95616 USA.
EM atupham@ucdavis.edu; nhviet@iop.vast.ac.vn
RI Nguyen, Huy-Viet/F-3374-2010; Rocca, Dario/C-3177-2012
OI Rocca, Dario/0000-0003-2122-6933
FU DOE BES [DE-FG02-06ER46262]; US Department of Energy at Lawrence
   Livermore National Laboratory [DE-AC52-07A27344]; Lawrence Scholar
   Program; Vietnam's National Foundation for Science and Technology
   Development (NAFOSTED) [103.02-2012.42]
FX This work was supported by DOE BES No. DE-FG02-06ER46262 and computer
   time was provided by NERSC. Part of this work was performed under the
   auspices of the US Department of Energy at Lawrence Livermore National
   Laboratory under Contract No. DE-AC52-07A27344. T. A. P. acknowledges
   support from the Lawrence Scholar Program. H.-V.N. acknowledges support
   by Vietnam's National Foundation for Science and Technology Development
   (NAFOSTED), Grant No. 103.02-2012.42. We thank Isaac Tamblyn and Jeffrey
   Neaton for useful discussions.
NR 61
TC 51
Z9 51
U1 0
U2 24
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
EI 1550-235X
J9 PHYS REV B
JI Phys. Rev. B
PD APR 26
PY 2013
VL 87
IS 15
AR 155148
DI 10.1103/PhysRevB.87.155148
PG 12
WC Physics, Condensed Matter
SC Physics
GA 133YZ
UT WOS:000318178100003
ER

PT J
AU Zhang, XL
   Liao, JF
AF Zhang, Xilin
   Liao, Jinfeng
TI Event-by-event azimuthal anisotropy of jet quenching in relativistic
   heavy ion collisions
SO PHYSICAL REVIEW C
LA English
DT Article
ID PB-PB COLLISIONS; QUARK-GLUON PLASMA; TRANSVERSE-MOMENTUM;
   ROOT-S(NN)=2.76 TEV; NUCLEAR COLLISIONS; FLOW; SUPPRESSION; DEPENDENCE;
   RIDGE; LHC
AB Background: Strong jet quenching has been observed in heavy ion collisions at both the Relativistic Heavy Ion Collider (RHIC) and the Large Hadron Collider (LHC) that can be understood through substantial jet energy loss in the created hot QCD matter. Yet the azimuthal anisotropy of jet quenching has not been thoroughly studied in the presence of strong fluctuations in the initial condition.
   Purpose: We present with full details a systematic quantification of the hard probe azimuthal response to the geometry and fluctuations of the hot QCD matter at both RHIC and LHC. We also examine the hard-soft dihadron correlation arising from the hard and soft sectors' responses to the common fluctuating initial condition.
   Methods: An even-by-event Monte Carlo simulation is employed. Different geometrical jet-quenching models are tested. The azimuthal anisotropy of jet quenching is extracted and decomposed as harmonic responses (for n = 1-6) to the corresponding harmonics in the initial state.
   Results: We show that such jet response harmonics are sensitive to the jet quenching models as well as to the initial composition of bulk matter. Their centrality dependence puts a strong constraint on the path-length and medium-density dependence of jet energy loss. The computed hard-soft dihadron correlation shows a strong peak on the near side in RHIC central collisions. The triggered correlation in noncentral collisions is also presented.
   Conclusions: Only the jet-quenching model with near-T-c enhancement survives the second-harmonic test by the RHIC and LHC. Other harmonics in this model are consistent with the available data. We also demonstrate that the experimentally observed "hard ridge" can be explained in our calculation and that its trigger-azimuthal-angle and associate-p(t) dependence could also be qualitatively understood. DOI: 10.1103/PhysRevC.87.044910
C1 [Zhang, Xilin; Liao, Jinfeng] Indiana Univ, Dept Phys, Bloomington, IN 47408 USA.
   [Zhang, Xilin; Liao, Jinfeng] Indiana Univ, Ctr Explorat Energy & Matter, Bloomington, IN 47408 USA.
   [Zhang, Xilin] Ohio Univ, Inst Nucl & Particle Phys, Athens, OH 45701 USA.
   [Zhang, Xilin] Ohio Univ, Dept Phys & Astron, Athens, OH 45701 USA.
   [Liao, Jinfeng] Brookhaven Natl Lab, RIKEN BNL Res Ctr, Upton, NY 11973 USA.
RP Zhang, XL (reprint author), Indiana Univ, Dept Phys, 2401 N Milo B Sampson Lane, Bloomington, IN 47408 USA.
EM zhangx4@ohio.edu; liaoji@indiana.edu
FU RIKEN BNL Research Center; Nuclear Theory Center at Indiana University;
   US Department of Energy [DE-FG02-93ER-40756]
FX We thank Larry McLerran, U. Heinz, Z. Qiu, M. Gyulassy, G. Torrieri, B.
   Betz, A. Buzzatti, J. Jia, R. Lacey, D. Molnar, F. Wang, and S.
   Mukherjee for helpful communications and discussions. We are also
   grateful to the Institute for Nuclear Theory and the organizers of the
   INT Workshop on "The Ridge Correlation in High-Energy Collisions at RHIC
   and LHC" during which the reported research was advanced. J.L. thanks
   the RIKEN BNL Research Center for partial support. X.Z. was supported by
   the Nuclear Theory Center at Indiana University, and is now supported by
   the US Department of Energy under Grant No. DE-FG02-93ER-40756.
NR 94
TC 17
Z9 17
U1 0
U2 7
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 2469-9985
EI 2469-9993
J9 PHYS REV C
JI Phys. Rev. C
PD APR 26
PY 2013
VL 87
IS 4
AR 044910
DI 10.1103/PhysRevC.87.044910
PG 21
WC Physics, Nuclear
SC Physics
GA 134AO
UT WOS:000318182200002
ER

PT J
AU Kharzeev, DE
   Loshaj, F
AF Kharzeev, Dmitri E.
   Loshaj, Frasher
TI Jet energy loss and fragmentation in heavy ion collisions
SO PHYSICAL REVIEW D
LA English
DT Article
ID QUARK CONFINEMENT; SCHWINGER MODEL; QCD
AB Recent LHC results indicate a suppression of jet fragmentation functions in Pb-Pb collisions at intermediate values of xi = ln(1/z). This seems to contradict the picture of energy loss based on the induced QCD radiation that is expected to lead to the enhancement of in-medium fragmentation functions. We use an effective 1 + 1 dimensional quasi-Abelian model to describe the dynamical modification of jet fragmentation in the medium. We find that this approach describes the data, and argue that there is no contradiction between the LHC results and the picture of QCD radiation induced by the in-medium scattering of the jet. The physics that underlies the suppression of the in-medium fragmentation function at intermediate values of xi = ln (1/z) is the partial screening of the color charge of the jet by the comoving medium-induced gluon. DOI: 10.1103/PhysRevD.87.077501
C1 [Kharzeev, Dmitri E.; Loshaj, Frasher] SUNY Stony Brook, Dept Phys & Astron, Stony Brook, NY 11794 USA.
   [Kharzeev, Dmitri E.] Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA.
RP Kharzeev, DE (reprint author), SUNY Stony Brook, Dept Phys & Astron, Stony Brook, NY 11794 USA.
FU U.S. Department of Energy [DE-AC02-98CH10886, DE-FG-88ER41723]
FX We thank G. Milhano and J. Putschke for useful discussions. This work
   was supported in part by the U.S. Department of Energy under Contracts
   No. DE-AC02-98CH10886 and No. DE-FG-88ER41723.
NR 25
TC 10
Z9 10
U1 1
U2 2
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1550-7998
J9 PHYS REV D
JI Phys. Rev. D
PD APR 26
PY 2013
VL 87
IS 7
AR 077501
DI 10.1103/PhysRevD.87.077501
PG 5
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 134BC
UT WOS:000318183700011
ER

PT J
AU Bertrand, CE
   Liu, KH
   Mamontov, E
   Chen, SH
AF Bertrand, C. E.
   Liu, K. -H.
   Mamontov, E.
   Chen, S. -H.
TI Hydration-dependent dynamics of deeply cooled water under strong
   confinement
SO PHYSICAL REVIEW E
LA English
DT Article
ID ELASTIC NEUTRON-SCATTERING; NUCLEAR-MAGNETIC-RESONANCE; SINGLE-PARTICLE
   DYNAMICS; SPIN-ECHO; MOLECULES; SURFACE; TRANSITION; CROSSOVER; CLAY
AB We have measured the hydration-level dependence of the single-particle dynamics of water confined in the ordered mesoporous silica MCM-41. The dynamic crossover observed at full hydration is absent at monolayer hydration. The monolayer dynamics are significantly slower than those of water in a fully hydrated pore at ambient temperatures. At low temperatures, the opposite is found to be true. These results underscore the importance of water's tetrahedral hydrogen-bond network in accounting for its low temperature dynamic properties. DOI: 10.1103/PhysRevE.87.042312
C1 [Bertrand, C. E.; Liu, K. -H.; Chen, S. -H.] MIT, Dept Nucl Sci & Engn, Cambridge, MA 02139 USA.
   [Liu, K. -H.] Acad Sinica, Inst Atom & Mol Sci, Taipei 10617, Taiwan.
   [Mamontov, E.] Oak Ridge Natl Lab, Neutron Sci Directorate, Oak Ridge, TN 37831 USA.
RP Chen, SH (reprint author), MIT, Dept Nucl Sci & Engn, 77 Massachusetts Ave, Cambridge, MA 02139 USA.
EM sowhsin@mit.edu
RI Mamontov, Eugene/Q-1003-2015
OI Mamontov, Eugene/0000-0002-5684-2675
FU Office of Basic Energy Sciences, US Department of Energy
   [DE-FG02-90ER45429]; Scientific User Facilities Division, Office of
   Basic Energy Sciences, US Department of Energy
FX Research at MIT was supported by the Office of Basic Energy Sciences, US
   Department of Energy under Contract No. DE-FG02-90ER45429. Oak Ridge
   National Lab, Spallation Neutron Source is supported by the Scientific
   User Facilities Division, Office of Basic Energy Sciences, US Department
   of Energy.
NR 35
TC 11
Z9 11
U1 0
U2 35
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1539-3755
J9 PHYS REV E
JI Phys. Rev. E
PD APR 26
PY 2013
VL 87
IS 4
AR 042312
DI 10.1103/PhysRevE.87.042312
PG 6
WC Physics, Fluids & Plasmas; Physics, Mathematical
SC Physics
GA 134CK
UT WOS:000318187100004
PM 23679419
ER

PT J
AU Rosin, MS
   Sun, H
AF Rosin, M. S.
   Sun, H.
TI Stability and energetics of Bursian diodes
SO PHYSICAL REVIEW E
LA English
DT Article
ID BOUNDARY ENERGY-FLOW; SPACE-CHARGE; HAMILTONIAN-FORMULATION;
   ELECTRON-BEAMS; FLUID; DYNAMICS; CURRENTS; PRINCIPLE; SYSTEMS; EMITTER
AB We present an analysis of the stability, energy, and torque properties of a model Bursian diode in a one dimensional Eulerian framework using the cold Euler-Poisson fluid equations. In regions of parameter space where there are two sets of equilibrium solutions for the same boundary conditions, one solution is found to be stable and the other unstable to linear perturbations. Following the linearly unstable solutions into the nonlinear regime, we find they relax to the stable equilibrium. A description of this process in terms of kinetic, potential and boundary-flux energies is given, and the relation to a Hamiltonian formulation is commented on. A nonlocal torque integral theorem relating the prescribed boundary data to the average current in the domain is also provided. The results will be useful for numerical verification purposes, and understanding Bursian diodes in general. DOI: 10.1103/PhysRevE.87.043114
C1 [Rosin, M. S.; Sun, H.] Univ Calif Los Angeles, Dept Math, Los Angeles, CA 90095 USA.
RP Rosin, MS (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94511 USA.
EM msr35@math.ucla.edu
FU Department of Energy [DE-FG02-05ER25710]; Air Force Office of Scientific
   Research STTR program [FA9550-09-C-0115]; NSF [DMS-0907931]
FX Special thanks to R. Caflisch for helpful suggestions throughout and
   LLNL's Visiting Scientist Program for hosting M.S.R. Also thanks to C.
   Anderson, B. Cohen, A. Dimits, M. Dorf, T. Heinemen, J. Hannay, S. Lee,
   L. LoDestro, A. Mestel, P. Morrison, L. Ricketson, D. Ryutov, and D.
   Uminsky for useful conversations. This work was funded by the Department
   of Energy through Grant No. DE-FG02-05ER25710 (M.S.R.), the Air Force
   Office of Scientific Research STTR program through Grant No.
   FA9550-09-C-0115 (H.S.), and NSF Grant No. DMS-0907931 (H.S.).
NR 38
TC 2
Z9 2
U1 4
U2 7
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1539-3755
J9 PHYS REV E
JI Phys. Rev. E
PD APR 26
PY 2013
VL 87
IS 4
AR 043114
DI 10.1103/PhysRevE.87.043114
PG 7
WC Physics, Fluids & Plasmas; Physics, Mathematical
SC Physics
GA 134CK
UT WOS:000318187100012
PM 23679536
ER

PT J
AU Kern, J
   Alonso-Mori, R
   Tran, R
   Hattne, J
   Gildea, RJ
   Echols, N
   Glockner, C
   Hellmich, J
   Laksmono, H
   Sierra, RG
   Lassalle-Kaiser, B
   Koroidov, S
   Lampe, A
   Han, GY
   Gul, S
   DiFiore, D
   Milathianaki, D
   Fry, AR
   Miahnahri, A
   Schafer, DW
   Messerschmidt, M
   Seibert, MM
   Koglin, JE
   Sokaras, D
   Weng, TC
   Sellberg, J
   Latimer, MJ
   Grosse-Kunstleve, RW
   Zwart, PH
   White, WE
   Glatzel, P
   Adams, PD
   Bogan, MJ
   Williams, GJ
   Boutet, S
   Messinger, J
   Zouni, A
   Sauter, NK
   Yachandra, VK
   Bergmann, U
   Yano, J
AF Kern, Jan
   Alonso-Mori, Roberto
   Tran, Rosalie
   Hattne, Johan
   Gildea, Richard J.
   Echols, Nathaniel
   Gloeckner, Carina
   Hellmich, Julia
   Laksmono, Hartawan
   Sierra, Raymond G.
   Lassalle-Kaiser, Benedikt
   Koroidov, Sergey
   Lampe, Alyssa
   Han, Guangye
   Gul, Sheraz
   DiFiore, Doerte
   Milathianaki, Despina
   Fry, Alan R.
   Miahnahri, Alan
   Schafer, Donald W.
   Messerschmidt, Marc
   Seibert, M. Marvin
   Koglin, Jason E.
   Sokaras, Dimosthenis
   Weng, Tsu-Chien
   Sellberg, Jonas
   Latimer, Matthew J.
   Grosse-Kunstleve, Ralf W.
   Zwart, Petrus H.
   White, William E.
   Glatzel, Pieter
   Adams, Paul D.
   Bogan, Michael J.
   Williams, Garth J.
   Boutet, Sebastien
   Messinger, Johannes
   Zouni, Athina
   Sauter, Nicholas K.
   Yachandra, Vittal K.
   Bergmann, Uwe
   Yano, Junko
TI Simultaneous Femtosecond X-ray Spectroscopy and Diffraction of
   Photosystem II at Room Temperature
SO SCIENCE
LA English
DT Article
ID PHOTOSYNTHETIC MN4CA CLUSTER; OXYGEN-EVOLVING COMPLEX; EMISSION
   SPECTROSCOPY; PROTEIN NANOCRYSTALS; CRYSTAL-STRUCTURE; SYNTHETIC MODEL;
   RESOLUTION; WATER; CRYSTALLOGRAPHY; TRANSITION
AB Intense femtosecond x-ray pulses produced at the Linac Coherent Light Source (LCLS) were used for simultaneous x-ray diffraction (XRD) and x-ray emission spectroscopy (XES) of microcrystals of photosystem II (PS II) at room temperature. This method probes the overall protein structure and the electronic structure of the Mn4CaO5 cluster in the oxygen-evolving complex of PS II. XRD data are presented from both the dark state (S-1) and the first illuminated state (S-2) of PS II. Our simultaneous XRD-XES study shows that the PS II crystals are intact during our measurements at the LCLS, not only with respect to the structure of PS II, but also with regard to the electronic structure of the highly radiation-sensitive Mn4CaO5 cluster, opening new directions for future dynamics studies.
C1 [Kern, Jan; Tran, Rosalie; Hattne, Johan; Gildea, Richard J.; Echols, Nathaniel; Lassalle-Kaiser, Benedikt; Lampe, Alyssa; Han, Guangye; Gul, Sheraz; Grosse-Kunstleve, Ralf W.; Zwart, Petrus H.; Adams, Paul D.; Sauter, Nicholas K.; Yachandra, Vittal K.; Yano, Junko] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Phys Biosci Div, Berkeley, CA 94720 USA.
   [Kern, Jan; Alonso-Mori, Roberto; Milathianaki, Despina; Fry, Alan R.; Miahnahri, Alan; Schafer, Donald W.; Messerschmidt, Marc; Seibert, M. Marvin; Koglin, Jason E.; White, William E.; Bogan, Michael J.; Williams, Garth J.; Boutet, Sebastien; Bergmann, Uwe] SLAC Natl Accelerator Lab, LCLS, Menlo Pk, CA 94025 USA.
   [Gloeckner, Carina; Hellmich, Julia; DiFiore, Doerte; Zouni, Athina] Tech Univ Berlin, Max Volmer Lab Biophys Chem, D-10623 Berlin, Germany.
   [Laksmono, Hartawan; Sierra, Raymond G.; Bogan, Michael J.] SLAC Natl Accelerator Lab, PULSE Inst, Menlo Pk, CA 94025 USA.
   [Koroidov, Sergey; Messinger, Johannes] Umea Univ, Kemiskt Biologiskt Ctr, Inst Kemi, Umea, Sweden.
   [Sokaras, Dimosthenis; Weng, Tsu-Chien; Sellberg, Jonas; Latimer, Matthew J.] SLAC Natl Accelerator Lab, SSRL, Menlo Pk, CA 94025 USA.
   [Sellberg, Jonas] Stockholm Univ, AlbaNova, Dept Phys, S-10691 Stockholm, Sweden.
   [Glatzel, Pieter] European Synchrotron Radiat Facil, F-38043 Grenoble 9, France.
RP Yachandra, VK (reprint author), Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Phys Biosci Div, Berkeley, CA 94720 USA.
EM vkyachandra@lbl.gov; bergmann@slac.stanford.edu; jyano@lbl.gov
RI Sokaras, Dimosthenis/G-6037-2010; Sellberg, Jonas/C-6506-2009; Zwart,
   Peter/F-7123-2013; alonso-mori, roberto/G-2638-2013; Kern,
   Jan/G-2586-2013; Messerschmidt, Marc/F-3796-2010; Glatzel,
   Pieter/E-9958-2010; Sauter, Nicholas/K-3430-2012; Adams,
   Paul/A-1977-2013; Gildea, Richard/J-6862-2012; 
OI Sokaras, Dimosthenis/0000-0001-8117-1933; Sellberg,
   Jonas/0000-0003-2793-5052; alonso-mori, roberto/0000-0002-5357-0934;
   Kern, Jan/0000-0002-7272-1603; Messerschmidt, Marc/0000-0002-8641-3302;
   Glatzel, Pieter/0000-0001-6532-8144; Adams, Paul/0000-0001-9333-8219;
   Gildea, Richard/0000-0001-5038-6958; Koroidov,
   Seregey/0000-0003-4823-2188
FU Office of Science, Office of Basic Energy Sciences (OBES), Division of
   Chemical Sciences, Geosciences, and Biosciences (CSGB) of the Department
   of Energy (DOE) [DE-AC02-05CH11231]; Laboratory Directed Research and
   Development award; NIH [GM055302, P41GM103393, GM095887, GM102520];
   Deutsche Forschungsgemeinschaft Cluster of Excellence "UniCat";
   Alexander von Humboldt Foundation; Solar Fuels Strong Research
   Environment (Umeal University); Artificial Leaf Project (K&A Wallenberg
   Foundation); LCLS; AMOS program; CSGB Division; OBES; DOE; SLAC
   Laboratory Directed Research and Development Program
FX We dedicate this paper to G. Renger (1937-2013) for his enthusiasm and
   support. This work was supported by the Director, Office of Science,
   Office of Basic Energy Sciences (OBES), Division of Chemical Sciences,
   Geosciences, and Biosciences (CSGB) of the Department of Energy (DOE)
   under contract DE-AC02-05CH11231 (J.Y. and V.K.Y.) for x-ray methodology
   and instrumentation; a Laboratory Directed Research and Development
   award to N.K.S; NIH grant GM055302 (V.K.Y.) for PS II biochemistry,
   structure, and mechanism and NIH grant P41GM103393 (U. B.); and grants
   GM095887 and GM102520 (N.K.S.) for data-processing methods. We thank the
   Deutsche Forschungsgemeinschaft Cluster of Excellence "UniCat,"
   coordinated by the Technische Universitat Berlin and Sfb1078, TP A5
   (A.Z.); the Alexander von Humboldt Foundation (J.K.); and the Solar
   Fuels Strong Research Environment (Umeal University), the Artificial
   Leaf Project (K&A Wallenberg Foundation), and Vetenskapsradet and
   Energimyndigheten (J.M.) for supporting this project. The injector work
   was supported by LCLS (M.J.B., D. W. S.) and the AMOS program, CSGB
   Division, OBES, DOE (M.J.B), and through the SLAC Laboratory Directed
   Research and Development Program (M.J.B., H. L.). Experiments were
   carried out at the LCLS at SLAC National Accelerator Laboratory operated
   by Stanford University on behalf of DOE, OBES. We thank K. Sauer for
   continuing scientific discussions. The atomic coordinates and structure
   factors have been deposited in the Protein Data Bank (www.pdb.org) with
   ID codes 4IXQ (dark state, S1) and 4IXR (first illuminated state, S2).
   See the supplementary materials for author contributions and full
   acknowledgments.
NR 29
TC 174
Z9 191
U1 19
U2 207
PU AMER ASSOC ADVANCEMENT SCIENCE
PI WASHINGTON
PA 1200 NEW YORK AVE, NW, WASHINGTON, DC 20005 USA
SN 0036-8075
J9 SCIENCE
JI Science
PD APR 26
PY 2013
VL 340
IS 6131
BP 491
EP 495
DI 10.1126/science.1234273
PG 5
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA 131SQ
UT WOS:000318016700046
PM 23413188
ER

PT J
AU Agus, DB
   Alexander, JF
   Arap, W
   Ashili, S
   Aslan, JE
   Austin, RH
   Backman, V
   Bethel, KJ
   Bonneau, R
   Chen, WC
   Chen-Tanyolac, C
   Choi, NC
   Curley, SA
   Dallas, M
   Damania, D
   Davies, PCW
   Decuzzi, P
   Dickinson, L
   Estevez-Salmeron, L
   Estrella, V
   Ferrari, M
   Fischbach, C
   Foo, J
   Fraley, SI
   Frantz, C
   Fuhrmann, A
   Gascard, P
   Gatenby, RA
   Geng, Y
   Gerecht, S
   Gillies, RJ
   Godin, B
   Grady, WM
   Greenfield, A
   Hemphill, C
   Hempstead, BL
   Hielscher, A
   Hillis, WD
   Holland, EC
   Ibrahim-Hashim, A
   Jacks, T
   Johnson, RH
   Joo, A
   Katz, JE
   Kelbauskas, L
   Kesselman, C
   King, MR
   Konstantopoulos, K
   Kraning-Rush, CM
   Kuhn, P
   Kung, K
   Kwee, B
   Lakins, JN
   Lambert, G
   Liao, D
   Licht, JD
   Liphardt, JT
   Liu, LY
   Lloyd, MC
   Lyubimova, A
   Mallick, P
   Marko, J
   McCarty, OJT
   Meldrum, DR
   Michor, F
   Mumenthaler, SM
   Nandakumar, V
   O'Halloran, TV
   Oh, S
   Pasqualini, R
   Paszek, MJ
   Philips, KG
   Poultney, CS
   Rana, K
   Reinhart-King, CA
   Ros, R
   Semenza, GL
   Senechal, P
   Shuler, ML
   Srinivasan, S
   Staunton, JR
   Stypula, Y
   Subramanian, H
   Tlsty, TD
   Tormoen, GW
   Tseng, Y
   van Oudenaarden, A
   Verbridge, SS
   Wan, JC
   Weaver, VM
   Widom, J
   Will, C
   Wirtz, D
   Wojtkowiak, J
   Wu, PH
AF Agus, David B.
   Alexander, Jenolyn F.
   Arap, Wadih
   Ashili, Shashanka
   Aslan, Joseph E.
   Austin, Robert H.
   Backman, Vadim
   Bethel, Kelly J.
   Bonneau, Richard
   Chen, Wei-Chiang
   Chen-Tanyolac, Chira
   Choi, Nathan C.
   Curley, Steven A.
   Dallas, Matthew
   Damania, Dhwanil
   Davies, Paul C. W.
   Decuzzi, Paolo
   Dickinson, Laura
   Estevez-Salmeron, Luis
   Estrella, Veronica
   Ferrari, Mauro
   Fischbach, Claudia
   Foo, Jasmine
   Fraley, Stephanie I.
   Frantz, Christian
   Fuhrmann, Alexander
   Gascard, Philippe
   Gatenby, Robert A.
   Geng, Yue
   Gerecht, Sharon
   Gillies, Robert J.
   Godin, Biana
   Grady, William M.
   Greenfield, Alex
   Hemphill, Courtney
   Hempstead, Barbara L.
   Hielscher, Abigail
   Hillis, W. Daniel
   Holland, Eric C.
   Ibrahim-Hashim, Arig
   Jacks, Tyler
   Johnson, Roger H.
   Joo, Ahyoung
   Katz, Jonathan E.
   Kelbauskas, Laimonas
   Kesselman, Carl
   King, Michael R.
   Konstantopoulos, Konstantinos
   Kraning-Rush, Casey M.
   Kuhn, Peter
   Kung, Kevin
   Kwee, Brian
   Lakins, Johnathon N.
   Lambert, Guillaume
   Liao, David
   Licht, Jonathan D.
   Liphardt, Jan T.
   Liu, Liyu
   Lloyd, Mark C.
   Lyubimova, Anna
   Mallick, Parag
   Marko, John
   McCarty, Owen J. T.
   Meldrum, Deirdre R.
   Michor, Franziska
   Mumenthaler, Shannon M.
   Nandakumar, Vivek
   O'Halloran, Thomas V.
   Oh, Steve
   Pasqualini, Renata
   Paszek, Matthew J.
   Philips, Kevin G.
   Poultney, Christopher S.
   Rana, Kuldeepsinh
   Reinhart-King, Cynthia A.
   Ros, Robert
   Semenza, Gregg L.
   Senechal, Patti
   Shuler, Michael L.
   Srinivasan, Srimeenakshi
   Staunton, Jack R.
   Stypula, Yolanda
   Subramanian, Hariharan
   Tlsty, Thea D.
   Tormoen, Garth W.
   Tseng, Yiider
   van Oudenaarden, Alexander
   Verbridge, Scott S.
   Wan, Jenny C.
   Weaver, Valerie M.
   Widom, Jonathan
   Will, Christine
   Wirtz, Denis
   Wojtkowiak, Jonathan
   Wu, Pei-Hsun
CA Phys Sci Oncology Ctr Network
TI A physical sciences network characterization of non-tumorigenic and
   metastatic cells
SO SCIENTIFIC REPORTS
LA English
DT Article
ID HYPOXIA-INDUCED METASTASIS; BREAST-CANCER; LYSYL OXIDASE; ADHESION;
   PROGRESSION; MIGRATION; PROTEIN; MORPHOLOGY; MECHANISM; SURVIVAL
AB To investigate the transition from non-cancerous to metastatic from a physical sciences perspective, the Physical Sciences-Oncology Centers (PS-OC) Network performed molecular and biophysical comparative studies of the non-tumorigenic MCF-10A and metastatic MDA-MB-231 breast epithelial cell lines, commonly used as models of cancer metastasis. Experiments were performed in 20 laboratories from 12 PS-OCs. Each laboratory was supplied with identical aliquots and common reagents and culture protocols. Analyses of these measurements revealed dramatic differences in their mechanics, migration, adhesion, oxygen response, and proteomic profiles. Model-based multi-omics approaches identified key differences between these cells' regulatory networks involved in morphology and survival. These results provide a multifaceted description of cellular parameters of two widely used cell lines and demonstrate the value of the PS-OC Network approach for integration of diverse experimental observations to elucidate the phenotypes associated with cancer metastasis.
C1 [Agus, David B.; Choi, Nathan C.; Hillis, W. Daniel; Joo, Ahyoung; Katz, Jonathan E.; Mallick, Parag; Mumenthaler, Shannon M.; Wan, Jenny C.] Univ So Calif, Keck Sch Med, Ctr Appl Mol Med, Los Angeles, CA 90033 USA.
   [Alexander, Jenolyn F.; Decuzzi, Paolo; Ferrari, Mauro; Godin, Biana; Srinivasan, Srimeenakshi] Methodist Hosp, Dept Nanomed, Res Inst, Houston, TX 77030 USA.
   [Arap, Wadih; Pasqualini, Renata] Univ Texas MD Anderson Canc Ctr, David H Koch Ctr, Houston, TX 77030 USA.
   [Ashili, Shashanka; Hemphill, Courtney; Johnson, Roger H.; Kelbauskas, Laimonas; Meldrum, Deirdre R.; Nandakumar, Vivek; Senechal, Patti] Arizona State Univ, Ctr Biosignatures Discovery Automat, Biodesign Inst, Tempe, AZ 85287 USA.
   [Aslan, Joseph E.; McCarty, Owen J. T.; Philips, Kevin G.; Tormoen, Garth W.] Oregon Hlth & Sci Univ, Dept Biomed Engn, Sch Med, Portland, OR 97239 USA.
   [Aslan, Joseph E.; McCarty, Owen J. T.] Oregon Hlth & Sci Univ, Dept Cell & Dev Biol, Sch Med, Portland, OR 97239 USA.
   [Austin, Robert H.; Lambert, Guillaume; Liu, Liyu] Princeton Univ, Dept Phys, Princeton, NJ 08544 USA.
   [Backman, Vadim; Damania, Dhwanil; Stypula, Yolanda; Subramanian, Hariharan] Northwestern Univ, Dept Biomed Engn, Evanston, IL 60208 USA.
   [Bethel, Kelly J.] Scripps Clin, Dept Pathol, La Jolla, CA 92037 USA.
   [Bonneau, Richard; Greenfield, Alex; Poultney, Christopher S.] NYU, Dept Biol, Dept Comp Sci, New York, NY 10003 USA.
   [Chen, Wei-Chiang; Dallas, Matthew; Dickinson, Laura; Fraley, Stephanie I.; Gerecht, Sharon; Hielscher, Abigail; Konstantopoulos, Konstantinos; Tseng, Yiider; Wirtz, Denis; Wu, Pei-Hsun] Johns Hopkins Univ, Dept Chem & Biomol Engn, Baltimore, MD 21218 USA.
   [Chen-Tanyolac, Chira; Estevez-Salmeron, Luis; Gascard, Philippe; Liao, David; Oh, Steve; Tlsty, Thea D.] Univ Calif San Francisco, Dept Pathol, San Francisco, CA 94143 USA.
   [Chen-Tanyolac, Chira; Estevez-Salmeron, Luis; Gascard, Philippe; Liao, David; Oh, Steve; Tlsty, Thea D.] Univ Calif San Francisco, UCSF Helen Diller Family Comprehens Canc Ctr, San Francisco, CA 94143 USA.
   [Curley, Steven A.] Univ Texas MD Anderson Canc Ctr, Dept Surg Oncol, Houston, TX 77030 USA.
   [Davies, Paul C. W.] Arizona State Univ, Beyond Ctr Fundamental Concepts Sci, Tempe, AZ 85287 USA.
   [Estrella, Veronica; Gatenby, Robert A.; Gillies, Robert J.; Ibrahim-Hashim, Arig; Lloyd, Mark C.; Wojtkowiak, Jonathan] H Lee Moffitt Canc Ctr & Res Inst, Dept Radiol, Tampa, FL 33612 USA.
   [Estrella, Veronica; Gatenby, Robert A.; Gillies, Robert J.; Ibrahim-Hashim, Arig; Lloyd, Mark C.; Wojtkowiak, Jonathan] H Lee Moffitt Canc Ctr & Res Inst, Dept Integrated Math Oncol, Tampa, FL 33612 USA.
   [Fischbach, Claudia; Geng, Yue; King, Michael R.; Kraning-Rush, Casey M.; Kwee, Brian; Rana, Kuldeepsinh; Reinhart-King, Cynthia A.; Shuler, Michael L.; Verbridge, Scott S.] Cornell Univ, Dept Biomed Engn, Ithaca, NY 14853 USA.
   [Foo, Jasmine] Univ Minnesota Twin Cities, Sch Math, Minneapolis, MN 55455 USA.
   [Frantz, Christian; Lakins, Johnathon N.; Paszek, Matthew J.; Weaver, Valerie M.] Univ Calif San Francisco, Dept Surg, San Francisco, CA 94143 USA.
   [Frantz, Christian; Lakins, Johnathon N.; Paszek, Matthew J.; Weaver, Valerie M.] Univ Calif San Francisco, Ctr Bioengn & Tissue Regenerat, San Francisco, CA 94143 USA.
   [Fuhrmann, Alexander; Ros, Robert; Staunton, Jack R.] Arizona State Univ, Dept Phys, Tempe, AZ 85287 USA.
   [Grady, William M.] Fred Hutchinson Canc Res Ctr, Div Clin Res, Seattle, WA 98109 USA.
   [Grady, William M.] Univ Washington, Dept Med, Seattle, WA 98195 USA.
   [Hempstead, Barbara L.] Weill Cornell Med Coll, Dept Med, New York, NY 10065 USA.
   [Hillis, W. Daniel] Appl Minds Inc, Glendale, CA 91201 USA.
   [Holland, Eric C.] Mem Sloan Kettering Canc Ctr, Canc Biol & Genet Program, Dept Neurosurg, New York, NY 10065 USA.
   [Jacks, Tyler; van Oudenaarden, Alexander] MIT, Dept Biol, Cambridge, MA 02139 USA.
   [Jacks, Tyler] MIT, Koch Inst Integrat Canc Res, Cambridge, MA 02139 USA.
   [Jacks, Tyler] MIT, Howard Hughes Med Inst, Cambridge, MA 02139 USA.
   [Kesselman, Carl] Univ So Calif, Inst Informat Sci, Marina Del Rey, CA 90292 USA.
   [Kuhn, Peter] Scripps Res Inst, Dept Cell Biol, La Jolla, CA 92037 USA.
   [Kung, Kevin; Lyubimova, Anna; van Oudenaarden, Alexander] MIT, Dept Phys, Cambridge, MA 02139 USA.
   [Licht, Jonathan D.; Will, Christine] Northwestern Univ, Div Hematol Oncol, Robert H Lurie Comprehens Canc Ctr, Feinberg Sch Med, Chicago, IL 60611 USA.
   [Liphardt, Jan T.] Univ Calif Berkeley, Dept Phys, Biophys Grad Grp, Berkeley, CA 94720 USA.
   [Liphardt, Jan T.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Phys Biosci Div, Berkeley, CA 94720 USA.
   [Lloyd, Mark C.] H Lee Moffitt Canc Ctr & Res Inst, Dept Analyt Microscopy, Tampa, FL 33612 USA.
   [Mallick, Parag] Stanford Univ, Dept Radiol, Sch Med, Stanford, CA 94305 USA.
   [Marko, John; Widom, Jonathan] Northwestern Univ, Dept Biochem Mol Biol & Cell Biol, Evanston, IL 60208 USA.
   [Michor, Franziska] Harvard Univ, Sch Publ Hlth, Dept Biostat & Computat Biol, Dana Farber Canc Inst, Boston, MA 02115 USA.
   [Michor, Franziska] Harvard Univ, Sch Publ Hlth, Dept Biostat, Boston, MA 02115 USA.
   [O'Halloran, Thomas V.] Northwestern Univ, Dept Chem, Chem Life Proc Inst, Evanston, IL 60208 USA.
   [Semenza, Gregg L.] Johns Hopkins Univ, Sch Med, Vasc Program, Inst Cell Engn, Baltimore, MD 21205 USA.
   [Semenza, Gregg L.] Johns Hopkins Univ, Sch Med, McKusick Nathans Inst Genet Med, Baltimore, MD 21205 USA.
   [Semenza, Gregg L.] Johns Hopkins Univ, Sch Med, Dept Pediat, Baltimore, MD 21205 USA.
   [Semenza, Gregg L.] Johns Hopkins Univ, Sch Med, Dept Med, Baltimore, MD 21205 USA.
   [Semenza, Gregg L.] Johns Hopkins Univ, Sch Med, Dept Oncol, Baltimore, MD 21205 USA.
   [Semenza, Gregg L.] Johns Hopkins Univ, Sch Med, Dept Radiat Oncol, Baltimore, MD 21205 USA.
   [Semenza, Gregg L.] Johns Hopkins Univ, Sch Med, Dept Biol Chem, Baltimore, MD 21205 USA.
   [Shuler, Michael L.] Cornell Univ, Sch Chem & Biomol Engn, Ithaca, NY 14853 USA.
   [Weaver, Valerie M.] Univ Calif San Francisco, Dept Anat, Dept Bioengn & Therapeut Sci, Eli & Edythe Broad Ctr Regenerat Med & Stem Cell, San Francisco, CA 94143 USA.
   [Weaver, Valerie M.] Univ Calif San Francisco, Helen Diller Comprehens Canc Ctr, San Francisco, CA 94143 USA.
RP Wirtz, D (reprint author), Johns Hopkins Univ, Dept Chem & Biomol Engn, Baltimore, MD 21218 USA.
EM wirtz@jhu.edu
RI Decuzzi, Paolo/F-1899-2016; Backman, Vadim/B-6689-2009; Fischbach,
   Claudia/C-8550-2009; Rana, Kuldeepsinh/G-3262-2010; Konstantopoulos,
   Konstantinos/A-7045-2011; Staunton, Jack/G-3786-2010; Ros,
   Robert/G-2154-2012; Reinhart-King, Cynthia/A-9264-2016
OI Gillies, Robert/0000-0002-8888-7747; Aslan, Joseph/0000-0002-8873-0387;
   Decuzzi, Paolo/0000-0001-6050-4188; Ashili,
   Shashanka/0000-0001-6335-0954; Kesselman, Carl/0000-0003-0917-1562; ,
   /0000-0001-7080-9196; Rana, Kuldeepsinh/0000-0001-8808-8518; Staunton,
   Jack/0000-0001-9773-8025; Reinhart-King, Cynthia/0000-0001-6959-3914
FU United States National Cancer Institute [U54CA143862, U54CA143876,
   U54CA143798, U54CA143970, U54CA143868, U54CA143874, U54CA143837,
   U54CA143869, U54CA143803, U54CA143906, U54CA143836, U54CA143907]
FX We thank Jack R. Staunton and Denis Wirtz for taking leadership in
   preparing this manuscript, and we thank Thea D. Tlsty and Barbara L.
   Hempstead for their input on the choice of cell lines for this project.
   Thiswork was supported by the following grants from the United States
   National Cancer Institute: U54CA143862 to P. C. W. D., U54CA143876 to M.
   L. S., U54CA143798 to F. M., U54CA143970 to R. A. G., U54CA143868 to D.
   W., U54CA143874 to A. V. O., U54CA143837 to M. F., U54CA143869 to T. V.
   O., U54CA143803 to R. H. A., U54CA143906 to P. K., U54CA143836 to J. T.
   L., and U54CA143907 to W. D. H. The content is solely the responsibility
   of the authors and does not necessarily represent the official views of
   the National Cancer Institute or the National Institutes of Health.
NR 41
TC 46
Z9 46
U1 8
U2 112
PU NATURE PUBLISHING GROUP
PI LONDON
PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND
SN 2045-2322
J9 SCI REP-UK
JI Sci Rep
PD APR 26
PY 2013
VL 3
AR 1449
DI 10.1038/srep01449
PG 12
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA 132IO
UT WOS:000318061300001
ER

PT J
AU Neto, EHD
   Aynajian, P
   Baumbach, RE
   Bauer, ED
   Mydosh, J
   Ono, S
   Yazdani, A
AF Neto, Eduardo H. da Silva
   Aynajian, Pegor
   Baumbach, Ryan E.
   Bauer, Eric D.
   Mydosh, John
   Ono, Shimpei
   Yazdani, Ali
TI Detection of electronic nematicity using scanning tunneling microscopy
SO PHYSICAL REVIEW B
LA English
DT Article
ID IRON ARSENIDE SUPERCONDUCTOR; HIDDEN-ORDER; ROTATIONAL SYMMETRY;
   KONDO-LATTICE; URU2SI2; STM; INTERFERENCE; SYSTEM; TIP; IMAGES
AB Electronic nematic phases have been proposed to occur in various correlated electron systems and were recently claimed to have been detected in scanning tunneling microscopy (STM) conductance maps of the pseudogap states of the cuprate high-temperature superconductor Bi2Sr2CaCu2O8+delta (Bi-2212). We investigate the influence of anisotropic STM tip structures on such measurements and establish, with a model calculation, the presence of a tunneling interference effect within an STM junction that induces energy-dependent symmetry-breaking features in the conductance maps. We experimentally confirm this phenomenon on different correlated electron systems, including measurements in the pseudogap state of Bi-2212, showing that the apparent nematic behavior of the imaged crystal lattice is likely not due to nematic order but is related to how a realistic STM tip probes the band structure of a material. We further establish that this interference effect can be used as a sensitive probe of changes in the momentum structure of the sample's quasiparticles as a function of energy. DOI: 10.1103/PhysRevB.87.161117
C1 [Neto, Eduardo H. da Silva; Aynajian, Pegor; Yazdani, Ali] Princeton Univ, Joseph Henry Labs, Princeton, NJ 08544 USA.
   [Neto, Eduardo H. da Silva; Aynajian, Pegor; Yazdani, Ali] Princeton Univ, Dept Phys, Princeton, NJ 08544 USA.
   [Baumbach, Ryan E.; Bauer, Eric D.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
   [Mydosh, John] Leiden Univ, Kamerlingh Onnes Lab, NL-2300 RA Leiden, Netherlands.
   [Ono, Shimpei] Cent Res Inst Elect Power Ind, Tokyo 201, Japan.
RP Neto, EHD (reprint author), Princeton Univ, Joseph Henry Labs, Princeton, NJ 08544 USA.
EM yazdani@princeton.edu
OI Bauer, Eric/0000-0003-0017-1937
FU DOE Office of Basic Energy Sciences [DE-FG02-07ER46419]; Princeton
   Center for Complex Materials [NSF-DMR1104612, DMR-0819860]; US DOE
   Office of Basic Energy Sciences, Division of Materials Science and
   Engineering
FX Work at Princeton University was primarily supported by a grant from the
   DOE Office of Basic Energy Sciences (DE-FG02-07ER46419). The
   instrumentation and infrastructure at the Princeton Nanoscale Microscopy
   Laboratory are also supported by grants from the NSF-DMR1104612 and
   NSF-MRSEC programs through the Princeton Center for Complex Materials
   (DMR-0819860). Work at LANL was conducted under the auspices of the US
   DOE Office of Basic Energy Sciences, Division of Materials Science and
   Engineering.
NR 27
TC 12
Z9 12
U1 2
U2 22
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 2469-9950
EI 2469-9969
J9 PHYS REV B
JI Phys. Rev. B
PD APR 25
PY 2013
VL 87
IS 16
AR 161117
DI 10.1103/PhysRevB.87.161117
PG 5
WC Physics, Condensed Matter
SC Physics
GA 133ZE
UT WOS:000318178600001
ER

PT J
AU Chatrchyan, S
   Khachatryan, V
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CA CMS Collaboration
TI Measurement of associated production of vector bosons and top
   quark-antiquark pairs in pp collisions at root s=7 TeV
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID DETECTOR; LHC
AB The first measurement of vector-boson production associated with a top quark-antiquark pair in proton-proton collisions at root s = 7 TeV is presented. The results are based on a data set corresponding to an integrated luminosity of 5.0 fb(-1), recorded by the CMS detector at the LHC in 2011. The measurement is performed in two independent channels through a trilepton analysis of t (t) over barZ events and a same-sign dilepton analysis of t (t) over barV (V = W or Z) events. In the trilepton channel a direct measurement of the t (t) over barZ cross section sigma(t (t) over barZ) = 0.28(-0.11)(+0.14) (stat)(-0.03)(+0.06) (syst) pb is obtained. In the dilepton channel a measurement of the t (t) over barV cross section yields sigma(t (t) over barV) = 0.43(-0.15)(+0.17) (stat)(-0.07)(+0.09) (syst) pb. These measurements have a significance, respectively, of 3.3 and 3.0 standard deviations from the background hypotheses and are compatible, within uncertainties, with the corresponding next-to-leading order predictions of 0.137(-0.016)(+0.012) and 0.306(-0.053)(+0.031) pb. DOI: 10.1103/PhysRevLett.110.172002
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   [Agram, J. -L.; Andrea, J.; Bloch, D.; Bodin, D.; Brom, J. -M.; Cardaci, M.; Chabert, E. C.; Collard, C.; Conte, E.; Drouhin, F.; Fontaine, J. -C.; Gele, D.; Goerlach, U.; Juillot, P.; Le Bihan, A. -C.; Van Hove, P.] Univ Haute Alsace Mulhouse, Inst Pluridisciplinaire Hubert Curien, Univ Strasbourg, CNRS,IN2P3, Strasbourg, France.
   [Beauceron, S.; Beaupere, N.; Bondu, O.; Boudoul, G.; Brochet, S.; Chasserat, J.; Chierici, R.; Contardo, D.; Depasse, P.; El Mamouni, H.; Fay, J.; Gascon, S.; Gouzevitch, M.; Ille, B.; Kurca, T.; Lethuillier, M.; Mirabito, L.; Perries, S.; Sgandurra, L.; Sordini, V.; Tschudi, Y.; Verdier, P.; Viret, S.] Univ Lyon 1, CNRS, IN2P3, Inst Phys Nucl Lyon, Villeurbanne, France.
   [Tsamalaidze, Z.] Tbilisi State Univ, Inst High Energy Phys & Informatizat, GE-380086 Tbilisi, Rep of Georgia.
   [Autermann, C.; Beranek, S.; Calpas, B.; Edelhoff, M.; Feld, L.; Heracleous, N.; Hindrichs, O.; Jussen, R.; Klein, K.; Merz, J.; Ostapchuk, A.; Perieanu, A.; Raupach, F.; Sammet, J.; Schael, S.; Sprenger, D.; Weber, H.; Wittmer, B.; Zhukov, V.] Rhein Westfal TH Aachen, Inst Phys 1, Aachen, Germany.
   [Ata, M.; Caudron, J.; Dietz-Laursonn, E.; Duchardt, D.; Erdmann, M.; Fischer, R.; Gueth, A.; Hebbeker, T.; Heidemann, C.; Hoepfner, K.; Klingebiel, D.; Kreuzer, P.; Merschmeyer, M.; Meyer, A.; Olschewski, M.; Padeken, K.; Papacz, P.; Pieta, H.; Reithler, H.; Schmitz, S. A.; Sonnenschein, L.; Steggemann, J.; Teyssier, D.; Thueer, S.; Weber, M.] Rhein Westfal TH Aachen, Phys Inst A 3, D-52062 Aachen, Germany.
   [Bontenackels, M.; Cherepanov, V.; Erdogan, Y.; Fluegge, G.; Geenen, H.; Geisler, M.; Ahmad, W. Haj; Hoehle, F.; Kargoll, B.; Kress, T.; Kuessel, Y.; Lingemann, J.; Nowack, A.; Nugent, I. M.; Perchalla, L.; Pooth, O.; Sauerland, P.; Stahl, A.] Rhein Westfal TH Aachen, Phys Inst B 3, D-52062 Aachen, Germany.
   [Martin, M. Aldaya; Asin, I.; Bartosik, N.; Behr, J.; Behrenhoff, W.; Behrens, U.; Bergholz, M.; Bethani, A.; Borras, K.; Burgmeier, A.; Cakir, A.; Calligaris, L.; Campbell, A.; Castro, E.; Costanza, F.; Dammann, D.; Pardos, C. Diez; Dorland, T.; Eckerlin, G.; Eckstein, D.; Flucke, G.; Geiser, A.; Glushkov, I.; Gunnellini, P.; Habib, S.; Hauk, J.; Hellwig, G.; Jung, H.; Kasemann, M.; Katsas, P.; Kleinwort, C.; Kluge, H.; Knutsson, A.; Kraemer, M.; Kruecker, D.; Kuznetsova, E.; Lange, W.; Leonard, J.; Lohmann, W.; Lutz, B.; Mankel, R.; Marfin, I.; Marienfeld, M.; Melzer-Pellmann, I. -A.; Meyer, A. B.; Mnich, J.; Mussgiller, A.; Naumann-Emme, S.; Novgorodova, O.; Nowak, F.; Olzem, J.; Perrey, H.; Petrukhin, A.; Pitzl, D.; Raspereza, A.; Cipriano, P. M. Ribeiro; Riedl, C.; Ron, E.; Rosin, M.; Salfeld-Nebgen, J.; Schmidt, R.; Schoerner-Sadenius, T.; Sen, N.; Spiridonov, A.; Stein, M.; Walsh, R.; Wissing, C.] DESY, Hamburg, Germany.
   [Blobel, V.; Enderle, H.; Erfle, J.; Gebbert, U.; Goerner, M.; Gosselink, M.; Haller, J.; Hermanns, T.; Hoeing, R. S.; Kaschube, K.; Kaussen, G.; Kirschenmann, H.; Klanner, R.; Lange, J.; Peiffer, T.; Pietsch, N.; Rathjens, D.; Sander, C.; Schettler, H.; Schleper, P.; Schlieckau, E.; Schmidt, A.; Schroeder, M.; Schum, T.; Seidel, M.; Sibille, J.; Sola, V.; Stadie, H.; Steinbrueck, G.; Thomsen, J.; Vanelderen, L.] Univ Hamburg, Hamburg, Germany.
   [Barth, C.; Baus, C.; Berger, J.; Boeser, C.; Chwalek, T.; De Boer, W.; Descroix, A.; Dierlamm, A.; Feindt, M.; Guthoff, M.; Hackstein, C.; Hartmann, F.; Hauth, T.; Heinrich, M.; Held, H.; Hoffmann, K. H.; Husemann, U.; Katkov, I.; Komaragiri, J. R.; Pardo, P. Lobelle; Martschei, D.; Mueller, S.; Mueller, Th.; Niegel, M.; Nuernberg, A.; Oberst, O.; Oehler, A.; Ott, J.; Quast, G.; Rabbertz, K.; Ratnikov, F.; Ratnikova, N.; Roecker, S.; Schilling, F. -P.; Schott, G.; Simonis, H. J.; Stober, F. M.; Troendle, D.; Ulrich, R.; Wagner-Kuhr, J.; Wayand, S.; Weiler, T.; Zeise, M.] Univ Karlsruhe, Inst Expt Kernphys, Karlsruhe, Germany.
   [Anagnostou, G.; Daskalakis, G.; Geralis, T.; Kesisoglou, S.; Kyriakis, A.; Loukas, D.; Manolakos, I.; Markou, A.; Markou, C.; Ntomari, E.] NCSR Demokritos, INPP, Aghia Paraskevi, Greece.
   [Gouskos, L.; Mertzimekis, T. J.; Panagiotou, A.; Saoulidou, N.; Sphicas, P.] Univ Athens, Athens, Greece.
   [Evangelou, I.; Foudas, C.; Kokkas, P.; Manthos, N.; Papadopoulos, I.] Univ Ioannina, GR-45110 Ioannina, Greece.
   [Bencze, G.; Hajdu, C.; Hidas, P.; Horvath, D.; Sikler, F.; Veszpremi, V.; Vesztergombi, G.; Zsigmond, A. J.; Krajczar, K.] KFKI Res Inst Particle & Nucl Phys, Budapest, Hungary.
   [Horvath, D.; Beni, N.; Czellar, S.; Molnar, J.; Palinkas, J.; Szillasi, Z.] Inst Nucl Res ATOMKI, Debrecen, Hungary.
   [Karancsi, J.; Raics, P.; Trocsanyi, Z. L.; Ujvari, B.] Univ Debrecen, H-4012 Debrecen, Hungary.
   [Beri, S. B.; Bhatnagar, V.; Dhingra, N.; Gupta, R.; Kaur, M.; Mehta, M. Z.; Mittal, M.; Nishu, N.; Saini, L. K.; Sharma, A.; Singh, J. B.] Panjab Univ, Chandigarh 160014, India.
   [Kumar, Ashok; Kumar, Arun; Ahuja, S.; Bhardwaj, A.; Choudhary, B. C.; Malhotra, S.; Naimuddin, M.; Ranjan, K.; Saxena, P.; Sharma, V.; Shivpuri, R. K.] Univ Delhi, Delhi 110007, India.
   [Banerjee, S.; Bhattacharya, S.; Chatterjee, K.; Dutta, S.; Gomber, B.; Jain, Sa.; Jain, Sh.; Khurana, R.; Modak, A.; Mukherjee, S.; Roy, D.; Sarkar, S.; Sharan, M.] Saha Inst Nucl Phys, Kolkata, India.
   [Abdulsalam, A.; Dutta, D.; Kailas, S.; Kumar, V.; Mohanty, A. K.; Pant, L. M.; Shukla, P.] Bhabha Atom Res Ctr, Mumbai 400085, Maharashtra, India.
   [Aziz, T.; Chatterjee, R. M.; Ganguly, S.; Guchait, M.; Gurtu, A.; Maity, M.; Majumder, G.; Mazumdar, K.; Mohanty, G. B.; Parida, B.; Sudhakar, K.; Wickramage, N.] Tata Inst Fundamental Res EHEP, Mumbai, Maharashtra, India.
   [Guchait, M.; Banerjee, S.; Dugad, S.] Tata Inst Fundamental Res HECR, Mumbai, Maharashtra, India.
   [Arfaei, H.; Bakhshiansohi, H.; Etesami, S. M.; Fahim, A.; Hashemi, M.; Hesari, H.; Jafari, A.; Khakzad, M.; Najafabadi, M. Mohammadi; Mehdiabadi, S. Paktinat; Safarzadeh, B.; Zeinali, M.] Inst Res Fundamental Sci IPM, Tehran, Iran.
   [Abbrescia, M.; Barbone, L.; Calabria, C.; Chhibra, S. S.; Colaleo, A.; Creanza, D.; De Filippis, N.; De Palma, M.; Fiore, L.; Iaselli, G.; Maggi, G.; Maggi, M.; Marangelli, B.; My, S.; Nuzzo, S.; Pacifico, N.; Pompili, A.; Pugliese, G.; Selvaggi, G.; Silvestris, L.; Singh, G.; Venditti, R.; Verwilligen, P.; Zito, G.] INFN Sez Bari, Bari, Italy.
   [Abbrescia, M.; Barbone, L.; Calabria, C.; Chhibra, S. S.; De Palma, M.; Marangelli, B.; Nuzzo, S.; Pompili, A.; Selvaggi, G.; Singh, G.; Venditti, R.] Univ Bari, Bari, Italy.
   [Creanza, D.; De Filippis, N.; Iaselli, G.; Maggi, G.; My, S.; Pugliese, G.] Politecn Bari, Bari, Italy.
   [Abbiendi, G.; Benvenuti, A. C.; Bonacorsi, D.; Braibant-Giacomelli, S.; Brigliadori, L.; Capiluppi, P.; Castro, A.; Cavallo, F. R.; Cuffiani, M.; Dallavalle, G. M.; Fabbri, F.; Fanfani, A.; Fasanella, D.; Giacomelli, P.; Grandi, C.; Guiducci, L.; Marcellini, S.; Masetti, G.; Meneghelli, M.; Montanari, A.; Navarria, F. L.; Odorici, F.; Perrotta, A.; Primavera, F.; Rossi, A. M.; Rovelli, T.; Siroli, G. P.; Tosi, N.; Travaglini, R.] INFN Sez Bologna, Bologna, Italy.
   [Bonacorsi, D.; Braibant-Giacomelli, S.; Brigliadori, L.; Capiluppi, P.; Castro, A.; Cuffiani, M.; Fanfani, A.; Fasanella, D.; Guiducci, L.; Meneghelli, M.; Navarria, F. L.; Primavera, F.; Rossi, A. M.; Rovelli, T.; Siroli, G. P.; Tosi, N.; Travaglini, R.] Univ Bologna, Bologna, Italy.
   [Albergo, S.; Cappello, G.; Chiorboli, M.; Costa, S.; Potenza, R.; Tricomi, A.; Tuve, C.] INFN Sez Catania, Catania, Italy.
   [Albergo, S.; Cappello, G.; Chiorboli, M.; Costa, S.; Potenza, R.; Tricomi, A.; Tuve, C.] Univ Catania, Catania, Italy.
   [Barbagli, G.; Civinini, C.; D'Alessandro, R.; Focardi, E.; Frosali, S.; Gallo, E.; Meschini, M.; Sguazzoni, G.; Tropiano, A.] INFN Sez Firenze, Florence, Italy.
   [Ciulli, V.; D'Alessandro, R.; Focardi, E.; Frosali, S.; Gonzi, S.; Tropiano, A.] Univ Florence, Florence, Italy.
   [Benussi, L.; Bianco, S.; Colafranceschi, S.; Fabbri, F.; Piccolo, D.] INFN Lab Nazl Frascati, Frascati, Italy.
   [Fabbricatore, P.; Musenich, R.; Tosi, S.] INFN Sez Genova, Genoa, Italy.
   [Tosi, S.] Univ Genoa, Genoa, Italy.
   [Benaglia, A.; De Guio, F.; Di Matteo, L.; Fiorendi, S.; Gennai, S.; Ghezzi, A.; Lucchini, M. T.; Malvezzi, S.; Manzoni, R. A.; Martelli, A.; Massironi, A.; Menasce, D.; Moroni, L.; Paganoni, M.; Pedrini, D.; Ragazzi, S.; Redaelli, N.; de Fatis, A. T. Tabarelli] INFN Sez Milano Bicocca, Milan, Italy.
   [De Guio, F.; Di Matteo, L.; Fiorendi, S.; Ghezzi, A.; Manzoni, R. A.; Martelli, A.; Massironi, A.; Paganoni, M.; Ragazzi, S.; de Fatis, A. T. Tabarelli] Univ Milano Bicocca, Milan, Italy.
   [Buontempo, S.; Cavallo, N.; De Cosa, A.; Dogangun, O.; Fabozzi, F.; Iorio, A. O. M.; Lista, L.; Meola, S.; Merola, M.; Paolucci, P.] INFN Sez Napoli, Naples, Italy.
   [Dogangun, O.; Iorio, A. O. M.] Univ Naples Federico II, Naples, Italy.
   [Cavallo, N.; De Cosa, A.; Fabozzi, F.] Univ Basilicata Potenza, Naples, Italy.
   [Meola, S.] Univ G Marconi Roma, Naples, Italy.
   [Azzi, P.; Bacchetta, N.; Bisello, D.; Branca, A.; Carlin, R.; Checchia, P.; Dorigo, T.; Dosselli, U.; Fanzago, F.; Gasparini, F.; Gasparini, U.; Gozzelino, A.; Kanishchev, K.; Lacaprara, S.; Lazzizzera, I.; Margoni, M.; Meneguzzo, A. T.; Pazzini, J.; Pozzobon, N.; Ronchese, P.; Simonetto, F.; Torassa, E.; Tosi, M.; Vanini, S.; Zotto, P.] INFN Sez Padova, Padua, Italy.
   [Bisello, D.; Branca, A.; Carlin, R.; Gasparini, F.; Gasparini, U.; Margoni, M.; Meneguzzo, A. T.; Pazzini, J.; Pozzobon, N.; Ronchese, P.; Simonetto, F.; Tosi, M.; Vanini, S.; Zotto, P.] Univ Padua, Padua, Italy.
   [Kanishchev, K.; Lazzizzera, I.] Univ Trento Trento, Padua, Italy.
   [Gabusi, M.; Ratti, S. P.; Riccardi, C.; Torre, P.; Vitulo, P.] INFN Sez Pavia, Pavia, Italy.
   [Gabusi, M.; Ratti, S. P.; Riccardi, C.; Torre, P.; Vitulo, P.] Univ Pavia, I-27100 Pavia, Italy.
   [Biasini, M.; Bilei, G. M.; Fano, L.; Lariccia, P.; Mantovani, G.; Menichelli, M.; Nappi, A.; Romeo, F.; Saha, A.; Santocchia, A.; Spiezia, A.; Taroni, S.] INFN Sez Perugia, Perugia, Italy.
   [Biasini, M.; Fano, L.; Lariccia, P.; Mantovani, G.; Nappi, A.; Romeo, F.; Santocchia, A.; Spiezia, A.; Taroni, S.] Univ Perugia, I-06100 Perugia, Italy.
   [Azzurri, P.; Bagliesi, G.; Bernardini, J.; Boccali, T.; Broccolo, G.; Castaldi, R.; D'Agnolo, R. T.; Dell'Orso, R.; Fiori, F.; Foa, L.; Giassi, A.; Kraan, A.; Ligabue, F.; Lomtadze, T.; Martini, L.; Messineo, A.; Palla, F.; Rizzi, A.; Serban, A. T.; Spagnolo, P.; Squillacioti, P.; Tenchini, R.; Tonelli, G.; Venturi, A.; Verdini, P. G.] INFN Sez Pisa, Pisa, Italy.
   [Fiori, F.; Messineo, A.; Rizzi, A.; Tonelli, G.] Univ Pisa, Pisa, Italy.
   [Azzurri, P.; D'Agnolo, R. T.; Foa, L.; Ligabue, F.; Rolandi, G.] Scuola Normale Super Pisa, Pisa, Italy.
   [Barone, L.; Cavallari, F.; Del Re, D.; Diemoz, M.; Fanelli, C.; Grassi, M.; Longo, E.; Meridiani, P.; Micheli, F.; Nourbakhsh, S.; Organtini, G.; Paramatti, R.; Rahatlou, S.; Soffi, L.; Rovelli, C.] INFN Sez Roma, Rome, Italy.
   [Del Re, D.; Fanelli, C.; Grassi, M.; Longo, E.; Micheli, F.; Nourbakhsh, S.; Organtini, G.; Rahatlou, S.; Soffi, L.] Univ Rome, Rome, Italy.
   [Amapane, N.; Arcidiacono, R.; Argiro, S.; Arneodo, M.; Biino, C.; Cartiglia, N.; Casasso, S.; Costa, M.; Demaria, N.; Mariotti, C.; Maselli, S.; Migliore, E.; Monaco, V.; Musich, M.; Obertino, M. M.; Pastrone, N.; Pelliccioni, M.; Potenza, A.; Romero, A.; Ruspa, M.; Sacchi, R.; Solano, A.; Staiano, A.] INFN Sez Torino, Turin, Italy.
   [Amapane, N.; Argiro, S.; Casasso, S.; Costa, M.; Migliore, E.; Monaco, V.; Potenza, A.; Romero, A.; Sacchi, R.; Solano, A.; Staiano, A.] Univ Turin, Turin, Italy.
   [Arcidiacono, R.; Arneodo, M.; Obertino, M. M.; Ruspa, M.] Univ Piemonte Orientale Novara, Turin, Italy.
   [Belforte, S.; Candelise, V.; Casarsa, M.; Cossutti, F.; Della Ricca, G.; Gobbo, B.; Marone, M.; Montanino, D.; Penzo, A.; Schizzi, A.] INFN Sez Trieste, Trieste, Italy.
   [Candelise, V.; Della Ricca, G.; Marone, M.; Montanino, D.; Schizzi, A.] Univ Trieste, Trieste, Italy.
   [Kim, T. Y.; Nam, S. K.] Kangwon Natl Univ, Chunchon, South Korea.
   [Chang, S.; Kim, D. H.; Kim, G. N.; Kong, D. J.; Park, H.; Son, D. C.; Kamon, T.] Kyungpook Natl Univ, Taegu, South Korea.
   [Kim, J. Y.; Kim, Zero J.; Song, S.] Chonnam Natl Univ, Inst Universe & Elementary Particles, Kwangju, South Korea.
   [Choi, S.; Gyun, D.; Hong, B.; Jo, M.; Kim, H.; Kim, T. J.; Lee, K. S.; Moon, D. H.; Park, S. K.; Roh, Y.] Korea Univ, Seoul, South Korea.
   [Choi, M.; Kim, J. H.; Park, C.; Park, I. C.; Park, S.; Ryu, G.] Univ Seoul, Seoul, South Korea.
   [Choi, Y.; Choi, Y. K.; Goh, J.; Kim, M. S.; Kwon, E.; Lee, B.; Lee, J.; Lee, S.; Seo, H.; Yu, I.] Sungkyunkwan Univ, Suwon, South Korea.
   [Bilinskas, M. J.; Grigelionis, I.; Janulis, M.; Juodagalvis, A.] Vilnius State Univ, Vilnius, Lithuania.
   [Castilla-Valdez, H.; De La Cruz-Burelo, E.; Heredia-de La Cruz, I.; Lopez-Fernandez, R.; Martinez-Ortega, J.; Sanchez-Hernandez, A.; Villasenor-Cendejas, L. M.] IPN, Ctr Invest & Estudios Avanzados, Mexico City 07738, DF, Mexico.
   [Carrillo Moreno, S.; Vazquez Valencia, F.] Univ Iberoamer, Mexico City, DF, Mexico.
   [Salazar Ibarguen, H. A.] Benemerita Univ Autonoma Puebla, Puebla, Mexico.
   [Casimiro Linares, E.; Morelos Pineda, A.] Univ Autonoma San Luis Potosi, San Luis Potosi, Mexico.
   [Krofcheck, D.] Univ Auckland, Auckland 1, New Zealand.
   [Bell, A. J.; Butler, P. H.; Doesburg, R.; Reucroft, S.; Silverwood, H.] Univ Canterbury, Christchurch 1, New Zealand.
   [Ahmad, M.; Asghar, M. I.; Butt, J.; Hoorani, H. R.; Khalid, S.; Khan, W. A.; Khurshid, T.; Qazi, S.; Shah, M. A.; Shoaib, M.] Quaid I Azam Univ, Natl Ctr Phys, Islamabad, Pakistan.
   [Bluj, M.; Bialkowska, H.; Boimska, B.; Frueboes, T.; Gorski, M.; Kazana, M.; Nawrocki, K.; Romanowska-Rybinska, K.; Szleper, M.; Wrochna, G.; Zalewski, P.] Natl Ctr Nucl Res, Otwock, Poland.
   [Brona, G.; Bunkowski, K.; Cwiok, M.; Dominik, W.; Doroba, K.; Kalinowski, A.; Konecki, M.; Krolikowski, J.; Misiura, M.; Wolszczak, W.] Univ Warsaw, Inst Expt Phys, Fac Phys, Warsaw, Poland.
   [Almeida, N.; Bargassa, P.; David, A.; Faccioli, P.; Ferreira Parracho, P. G.; Gallinaro, M.; Seixas, J.; Varela, J.; Vischia, P.] Lab Instrumentacao & Fis Expt Particulas, Lisbon, Portugal.
   [Tsamalaidze, Z.; Belotelov, I.; Bunin, P.; Gavrilenko, M.; Golutvin, I.; Gorbunov, I.; Kamenev, A.; Karjavin, V.; Kozlov, G.; Lanev, A.; Malakhov, A.; Moisenz, P.; Palichik, V.; Perelygin, V.; Shmatov, S.; Smirnov, V.; Volodko, A.; Zarubin, A.] Joint Inst Nucl Res, Dubna, Russia.
   [Evstyukhin, S.; Golovtsov, V.; Ivanov, Y.; Kim, V.; Levchenko, P.; Murzin, V.; Oreshkin, V.; Smirnov, I.; Sulimov, V.; Uvarov, L.; Vavilov, S.; Vorobyev, A.; Vorobyev, An.] Petersburg Nucl Phys Inst, St Petersburg, Russia.
   [Andreev, Yu.; Dermenev, A.; Gninenko, S.; Golubev, N.; Kirsanov, M.; Krasnikov, N.; Matveev, V.; Pashenkov, A.; Tlisov, D.; Toropin, A.; Musienko, Y.] Russian Acad Sci, Inst Nucl Res, Moscow 117312, Russia.
   [Epshteyn, V.; Erofeeva, M.; Gavrilov, V.; Kossov, M.; Lychkovskaya, N.; Popov, V.; Safronov, G.; Semenov, S.; Shreyber, I.; Stolin, V.; Vlasov, E.; Zhokin, A.; Starodumov, A.; Nikitenko, A.] Inst Theoret & Expt Phys, Moscow 117259, Russia.
   [Andreev, V.; Azarkin, M.; Dremin, I.; Kirakosyan, M.; Leonidov, A.; Mesyats, G.; Rusakov, S. V.; Vinogradov, A.] PN Lebedev Phys Inst, Moscow 117924, Russia.
   [Zhukov, V.; Katkov, I.; Belyaev, A.; Boos, E.; Dubinin, M.; Dudko, L.; Ershov, A.; Gribushin, A.; Klyukhin, V.; Kodolova, O.; Lokhtin, I.; Markina, A.; Obraztsov, S.; Perfilov, M.; Petrushanko, S.; Popov, A.; Sarycheva, L.; Savrin, V.; Snigirev, A.] Moscow MV Lomonosov State Univ, Skobeltsyn Inst Nucl Phys, Moscow, Russia.
   [Azhgirey, I.; Bayshev, I.; Bitioukov, S.; Grishin, V.; Kachanov, V.; Konstantinov, D.; Krychkine, V.; Petrov, V.; Ryutin, R.; Sobol, A.; Tourtchanovitch, L.; Troshin, S.; Tyurin, N.; Uzunian, A.; Volkov, A.] Inst High Energy Phys, State Res Ctr Russian Federat, Protvino, Russia.
   [Adzic, P.; Djordjevic, M.; Ekmedzic, M.; Krpic, D.; Milosevic, J.; Milenovic, P.] Univ Belgrade, Fac Phys, Belgrade 11001, Serbia.
   [Adzic, P.; Djordjevic, M.; Ekmedzic, M.; Krpic, D.; Milosevic, J.; Milenovic, P.] Vinca Inst Nucl Sci, Belgrade, Serbia.
   [Aguilar-Benitez, M.; Maestre, J. Alcaraz; Arce, P.; Battilana, C.; Calvo, E.; Cerrada, M.; Chamizo Llatas, M.; Colino, N.; De La Cruz, B.; Delgado Peris, A.; Dominguez Vazquez, D.; Fernandez Bedoya, C.; Fernandez Ramos, J. P.; Ferrando, A.; Flix, J.; Fouz, M. C.; Garcia-Abia, P.; Gonzalez Lopez, O.; Goy Lopez, S.; Hernandez, J. M.; Josa, M. I.; Merino, G.; Puerta Pelayo, J.; Quintario Olmeda, A.; Redondo, I.; Romero, L.; Santaolalla, J.; Soares, M. S.; Willmott, C.] Ctr Invest Energet Medioambientales & Tecnol CIEM, Madrid, Spain.
   [Albajar, C.; Codispoti, G.; de Troconiz, J. F.] Univ Autonoma Madrid, Madrid, Spain.
   [Brun, H.; Cuevas, J.; Fernandez Menendez, J.; Folgueras, S.; Gonzalez Caballero, I.; Lloret Iglesias, L.; Piedra Gomez, J.] Univ Oviedo, Oviedo, Spain.
   [Brochero Cifuentes, J. A.; Cabrillo, I. J.; Calderon, A.; Chuang, S. H.; Duarte Campderros, J.; Felcini, M.; Fernandez, M.; Gomez, G.; Gonzalez Sanchez, J.; Graziano, A.; Jorda, C.; Lopez Virto, A.; Marco, J.; Marco, R.; Martinez Rivero, C.; Matorras, F.; Munoz Sanchez, F. J.; Rodrigo, T.; Rodriguez-Marrero, A. Y.; Ruiz-Jimeno, A.; Scodellaro, L.; Vila, I.; Vilar Cortabitarte, R.] Univ Cantabria, Inst Fis Cantabria IFCA, CSIC, E-39005 Santander, Spain.
   [Rabady, D.; Genchev, V.; Iaydjiev, P.; Puljak, I.; Chierici, R.; Lingemann, J.; Guthoff, M.; Hartmann, F.; Hauth, T.; Mohanty, A. K.; Calabria, C.; De Filippis, N.; Meneghelli, M.; Di Matteo, L.; Gennai, S.; Lucchini, M. T.; De Cosa, A.; Paolucci, P.; Bacchetta, N.; Branca, A.; D'Agnolo, R. T.; Fiori, F.; Squillacioti, P.; Grassi, M.; Meridiani, P.; Mariotti, C.; Musich, M.; Cossutti, F.; Marone, M.; Grishin, V.; Abbaneo, D.; Auffray, E.; Auzinger, G.; Bachtis, M.; Baillon, P.; Ball, A. H.; Barney, D.; Benitez, J. F.; Bernet, C.; Bianchi, G.; Bloch, P.; Bocci, A.; Bonato, A.; Botta, C.; Breuker, H.; Camporesi, T.; Cerminara, G.; Christiansen, T.; Coarasa Perez, J. A.; D'Enterria, D.; Dabrowski, A.; De Roeck, A.; De Visscher, S.; Di Guida, S.; Dobson, M.; Dupont-Sagorin, N.; Elliott-Peisert, A.; Frisch, B.; Funk, W.; Georgiou, G.; Giffels, M.; Gigi, D.; Gill, K.; Giordano, D.; Girone, M.; Giunta, M.; Glege, F.; Garrido, R. Gomez-Reino; Govoni, P.; Gowdy, S.; Guida, R.; Hammer, J.; Hansen, M.; Harris, P.; Hartl, C.; Harvey, J.; Hegner, B.; Hinzmann, A.; Innocente, V.; Janot, P.; Kaadze, K.; Karavakis, E.; Kousouris, K.; Lecoq, P.; Lee, Y. -J.; Lenzi, P.; Lourenco, C.; Magini, N.; Maeki, T.; Malberti, M.; Malgeri, L.; Mannelli, M.; Masetti, L.; Meijers, F.; Mersi, S.; Meschi, E.; Moser, R.; Mulders, M.; Musella, P.; Nesvold, E.; Orsini, L.; Cortezon, E. Palencia; Perez, E.; Perrozzi, L.; Petrilli, A.; Pfeiffer, A.; Pierini, M.; Pimiae, M.; Piparo, D.; Polese, G.; Quertenmont, L.; Racz, A.; Reece, W.; Antunes, J. Rodrigues; Rolandi, G.; Rovelli, C.; Rovere, M.; Sakulin, H.; Santanastasio, F.; Schaefer, C.; Schwick, C.; Segoni, I.; Sekmen, S.; Sharma, A.; Siegrist, P.; Silva, P.; Simon, M.; Sphicas, P.; Spiga, D.; Tsirou, A.; Veres, G. I.; Vlimant, J. R.; Woehri, H. K.; Worm, S. D.; Zeuner, W. D.] CERN, European Org Nucl Res, CH-1211 Geneva, Switzerland.
   [Bertl, W.; Deiters, K.; Erdmann, W.; Gabathuler, K.; Horisberger, R.; Ingram, Q.; Kaestli, H. C.; Koenig, S.; Kotlinski, D.; Langenegger, U.; Meier, F.; Renker, D.; Rohe, T.; Naegeli, C.] Paul Scherrer Inst, Villigen, Switzerland.
   [Bachmair, F.; Baeni, L.; Bortignon, P.; Buchmann, M. A.; Casal, B.; Chanon, N.; Deisher, A.; Dissertori, G.; Dittmar, M.; Donega, M.; Duenser, M.; Eller, P.; Eugster, J.; Freudenreich, K.; Grab, C.; Hits, D.; Lecomte, P.; Lustermann, W.; Marini, A. C.; del Arbol, P. Martinez Ruiz; Mohr, N.; Moortgat, F.; Naegeli, C.; Nef, P.; Nessi-Tedaldi, F.; Pandolfi, F.; Pape, L.; Pauss, F.; Peruzzi, M.; Ronga, F. J.; Rossini, M.; Sala, L.; Sanchez, A. K.; Starodumov, A.; Stieger, B.; Takahashi, M.; Tauscher, L.; Thea, A.; Theofilatos, K.; Treille, D.; Urscheler, C.; Wallny, R.; Weber, H. A.; Wehrli, L.] ETH, Inst Particle Phys, Zurich, Switzerland.
   [Amsler, C.; Chiochia, V.; Favaro, C.; Rikova, M. Ivova; Kilminster, B.; Mejias, B. Millan; Otiougova, P.; Robmann, P.; Snoek, H.; Tupputi, S.; Verzetti, M.] Univ Zurich, Zurich, Switzerland.
   [Chang, Y. H.; Chen, K. H.; Ferro, C.; Kuo, C. M.; Li, S. W.; Lin, W.; Lu, Y. J.; Singh, A. P.; Volpe, R.; Yu, S. S.] Natl Cent Univ, Chungli 32054, Taiwan.
   [Bartalini, P.; Chang, P.; Chang, Y. H.; Chang, Y. W.; Chao, Y.; Chen, K. F.; Dietz, C.; Grundler, U.; Hou, W. -S.; Hsiung, Y.; Kao, K. Y.; Lei, Y. J.; Lu, R. -S.; Majumder, D.; Petrakou, E.; Shi, X.; Shiu, J. G.; Tzeng, Y. M.; Wan, X.; Wang, M.] Natl Taiwan Univ, Taipei 10764, Taiwan.
   [Asavapibhop, B.; Simili, E.; Srimanobhas, N.; Suwonjandee, N.] Chulalongkorn Univ, Bangkok, Thailand.
   [Adiguzel, A.; Bakirci, M. N.; Cerci, S.; Dozen, C.; Dumanoglu, I.; Eskut, E.; Girgis, S.; Gokbulut, G.; Gurpinar, E.; Hos, I.; Kangal, E. E.; Karaman, T.; Karapinar, G.; Topaksu, A. Kayis; Onengut, G.; Ozdemir, K.; Ozturk, S.; Polatoz, A.; Sogut, K.; Cerci, D. Sunar; Tali, B.; Topakli, H.; Vergili, L. N.; Vergili, M.] Cukurova Univ, Adana, Turkey.
   [Akin, I. V.; Aliev, T.; Bilin, B.; Bilmis, S.; Deniz, M.; Gamsizkan, H.; Guler, A. M.; Ocalan, K.; Ozpineci, A.; Serin, M.; Sever, R.; Surat, U. E.; Yalvac, M.; Yildirim, E.; Zeyrek, M.] Middle E Tech Univ, Dept Phys, TR-06531 Ankara, Turkey.
   [Guelmez, E.; Isildak, B.; Kaya, M.; Kaya, O.; Ozkorucuklu, S.; Sonmez, N.] Bogazici Univ, Istanbul, Turkey.
   [Bahtiyar, H.; Barlas, E.; Cankocak, K.; Vardarli, F. I.; Yucel, M.] Istanbul Tech Univ, TR-80626 Istanbul, Turkey.
   [Levchuk, L.] Natl Sci Ctr, Kharkov Inst Phys & Technol, Kharkov, Ukraine.
   [Brooke, J. J.; Clement, E.; Cussans, D.; Flacher, H.; Frazier, R.; Goldstein, J.; Grimes, M.; Heath, G. P.; Heath, H. F.; Kreczko, L.; Metson, S.; Newbold, D. M.; Nirunpong, K.; Poll, A.; Senkin, S.; Smith, V. J.; Williams, T.] Univ Bristol, Bristol, Avon, England.
   [Newbold, D. M.; Basso, L.; Bell, K. W.; Belyaev, A.; Brew, C.; Brown, R. M.; Cockerill, D. J. A.; Coughlan, J. A.; Harder, K.; Harper, S.; Jackson, J.; Kennedy, B. W.; Olaiya, E.; Petyt, D.; Radburn-Smith, B. C.; Shepherd-Themistocleous, C. H.; Tomalin, I. R.; Womersley, W. J.] Rutherford Appleton Lab, Didcot OX11 0QX, Oxon, England.
   [Bainbridge, R.; Ball, G.; Beuselinck, R.; Buchmuller, O.; Colling, D.; Cripps, N.; Cutajar, M.; Dauncey, P.; Davies, G.; Della Negra, M.; Ferguson, W.; Fulcher, J.; Futyan, D.; Gilbert, A.; Bryer, A. Guneratne; Hall, G.; Hatherell, Z.; Hays, J.; Iles, G.; Jarvis, M.; Karapostoli, G.; Kenzie, M.; Lyons, L.; Magnan, A. -M.; Marrouche, J.; Mathias, B.; Nandi, R.; Nash, J.; Nikitenko, A.; Pela, J.; Pesaresi, M.; Petridis, K.; Pioppi, M.; Raymond, D. M.; Rogerson, S.; Rose, A.; Seez, C.; Sharp, P.; Sparrow, A.; Stoye, M.; Tapper, A.; Acosta, M. Vazquez; Virdee, T.; Wakefield, S.; Wardle, N.; Whyntie, T.] Univ London Imperial Coll Sci Technol & Med, London, England.
   [Chadwick, M.; Cole, J. E.; Hobson, P. R.; Khan, A.; Kyberd, P.; Leggat, D.; Leslie, D.; Martin, W.; Reid, I. D.; Symonds, P.; Teodorescu, L.; Turner, M.] Brunel Univ, Uxbridge UB8 3PH, Middx, England.
   [Hatakeyama, K.; Liu, H.; Scarborough, T.] Baylor Univ, Waco, TX 76798 USA.
   [Charaf, O.; Cooper, S. I.; Henderson, C.; Rumerio, P.] Univ Alabama, Tuscaloosa, AL USA.
   [Avetisyan, A.; Bose, T.; Fantasia, C.; Heister, A.; Lawson, P.; Lazic, D.; Rohlf, J.; Sperka, D.; St John, J.; Sulak, L.] Boston Univ, Boston, MA 02215 USA.
   [Alimena, J.; Bhattacharya, S.; Christopher, G.; Cutts, D.; Demiragli, Z.; Ferapontov, A.; Garabedian, A.; Heintz, U.; Jabeen, S.; Kukartsev, G.; Laird, E.; Landsberg, G.; Luk, M.; Narain, M.; Segala, M.; Sinthuprasith, T.; Speer, T.] Brown Univ, Providence, RI 02912 USA.
   [Breedon, R.; Breto, G.; Sanchez, M. Calderon De La Barca; Caulfield, M.; Chauhan, S.; Chertok, M.; Conway, J.; Conway, R.; Cox, P. T.; Dolen, J.; Erbacher, R.; Gardner, M.; Houtz, R.; Ko, W.; Kopecky, A.; Lander, R.; Mall, O.; Miceli, T.; Nelson, R.; Pellett, D.; Ricci-Tam, F.; Rutherford, B.; Searle, M.; Smith, J.; Squires, M.; Tripathi, M.; Sierra, R. Vasquez; Yohay, R.] Univ Calif Davis, Davis, CA 95616 USA.
   [Felcini, M.; Andreev, V.; Cline, D.; Cousins, R.; Duris, J.; Erhan, S.; Everaerts, P.; Farrell, C.; Hauser, J.; Ignatenko, M.; Jarvis, C.; Rakness, G.; Schlein, P.; Traczyk, P.; Valuev, V.; Weber, M.] Univ Calif Los Angeles, Los Angeles, CA USA.
   [Babb, J.; Clare, R.; Dinardo, M. E.; Ellison, J.; Gary, J. W.; Giordano, F.; Hanson, G.; Liu, H.; Long, O. R.; Luthra, A.; Nguyen, H.; Paramesvaran, S.; Sturdy, J.; Sumowidagdo, S.; Wilken, R.; Wimpenny, S.] Univ Calif Riverside, Riverside, CA 92521 USA.
   [Andrews, W.; Branson, J. G.; Cerati, G. B.; Cittolin, S.; Evans, D.; Holzner, A.; Kelley, R.; Lebourgeois, M.; Letts, J.; Macneill, I.; Mangano, B.; Padhi, S.; Palmer, C.; Petrucciani, G.; Pieri, M.; Sani, M.; Sharma, V.; Simon, S.; Sudano, E.; Tadel, M.; Tu, Y.; Vartak, A.; Wasserbaech, S.; Wuerthwein, F.; Yagil, A.; Yoo, J.] Univ Calif San Diego, La Jolla, CA 92093 USA.
   [Barge, D.; Bellan, R.; Campagnari, C.; D'Alfonso, M.; Danielson, T.; Flowers, K.; Geffert, P.; George, C.; Golf, F.; Incandela, J.; Justus, C.; Kalavase, P.; Kovalskyi, D.; Krutelyov, V.; Lowette, S.; Villalba, R. Magana; Mccoll, N.; Pavlunin, V.; Ribnik, J.; Richman, J.; Rossin, R.; Stuart, D.; To, W.; West, C.] Univ Calif Santa Barbara, Santa Barbara, CA 93106 USA.
   [Dias, F. A.; Dubinin, M.; Apresyan, A.; Bornheim, A.; Bunn, J.; Chen, Y.; Di Marco, E.; Duarte, J.; Gataullin, M.; Kcira, D.; Ma, Y.; Mott, A.; Newman, H. B.; Rogan, C.; Spiropulu, M.; Timciuc, V.; Veverka, J.; Wilkinson, R.; Xie, S.; Yang, Y.; Zhu, R. Y.] CALTECH, Pasadena, CA 91125 USA.
   [Azzolini, V.; Calamba, A.; Carroll, R.; Ferguson, T.; Iiyama, Y.; Jang, D. W.; Liu, Y. F.; Paulini, M.; Vogel, H.; Vorobiev, I.] Carnegie Mellon Univ, Pittsburgh, PA 15213 USA.
   [Cumalat, J. P.; Drell, B. R.; Ford, W. T.; Gaz, A.; Lopez, E. Luiggi; Smith, J. G.; Stenson, K.; Ulmer, K. A.; Wagner, S. R.] Univ Colorado, Boulder, CO 80309 USA.
   [Alexander, J.; Chatterjee, A.; Eggert, N.; Gibbons, L. K.; Heltsley, B.; Hopkins, W.; Khukhunaishvili, A.; Kreis, B.; Mirman, N.; Kaufman, G. Nicolas; Patterson, J. R.; Ryd, A.; Salvati, E.; Sun, W.; Teo, W. D.; Thom, J.; Thompson, J.; Tucker, J.; Weng, Y.; Winstrom, L.; Wittich, P.] Cornell Univ, Ithaca, NY USA.
   [Winn, D.] Fairfield Univ, Fairfield, CT 06430 USA.
   [Abdullin, S.; Albrow, M.; Anderson, J.; Apollinari, G.; Bauerdick, L. A. T.; Beretvas, A.; Berryhill, J.; Bhat, P. C.; Burkett, K.; Butler, J. N.; Chetluru, V.; Cheung, H. W. K.; Chlebana, F.; Cihangir, S.; Elvira, V. D.; Fisk, I.; Freeman, J.; Gao, Y.; Green, D.; Gutsche, O.; Hanlon, J.; Harris, R. M.; Hirschauer, J.; Hooberman, B.; Jindariani, S.; Johnson, M.; Joshi, U.; Klima, B.; Kunori, S.; Kwan, S.; Leonidopoulos, C.; Linacre, J.; Lincoln, D.; Lipton, R.; Lykken, J.; Maeshima, K.; Marraffino, J. M.; Outschoorn, V. I. Martinez; Maruyama, S.; Mason, D.; McBride, P.; Mishra, K.; Mrenna, S.; Musienko, Y.; Newman-Holmes, C.; O'Dell, V.; Sexton-Kennedy, E.; Sharma, S.; Spalding, W. J.; Spiegel, L.; Taylor, L.; Tkaczyk, S.; Tran, N. V.; Uplegger, L.; Vaandering, E. W.; Vidal, R.; Whitmore, J.; Wu, W.; Yang, F.; Yun, J. C.] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA.
   [Acosta, D.; Avery, P.; Bourilkov, D.; Chen, M.; Cheng, T.; Das, S.; De Gruttola, M.; Di Giovanni, G. P.; Dobur, D.; Drozdetskiy, A.; Field, R. D.; Fisher, M.; Fu, Y.; Furic, I. K.; Gartner, J.; Hugon, J.; Kim, B.; Konigsberg, J.; Korytov, A.; Kropivnitskaya, A.; Kypreos, T.; Low, J. F.; Matchev, K.; Milenovic, P.; Mitselmakher, G.; Muniz, L.; Park, M.; Remington, R.; Rinkevicius, A.; Sellers, P.; Skhirtladze, N.; Snowball, M.; Yelton, J.; Zakaria, M.] Univ Florida, Gainesville, FL USA.
   [Gaultney, V.; Hewamanage, S.; Lebolo, L. M.; Linn, S.; Markowitz, P.; Martinez, G.; Rodriguez, J. L.] Florida Int Univ, Miami, FL 33199 USA.
   [Adams, T.; Askew, A.; Bochenek, J.; Chen, J.; Diamond, B.; Gleyzer, S. V.; Haas, J.; Hagopian, S.; Hagopian, V.; Jenkins, M.; Johnson, K. F.; Prosper, H.; Veeraraghavan, V.; Weinberg, M.] Florida State Univ, Tallahassee, FL 32306 USA.
   [Baarmand, M. M.; Dorney, B.; Hohlmann, M.; Kalakhety, H.; Vodopiyanov, I.; Yumiceva, F.] Florida Inst Technol, Melbourne, FL 32901 USA.
   [Adams, M. R.; Apanasevich, L.; Bai, Y.; Bazterra, V. E.; Betts, R. R.; Bucinskaite, I.; Callner, J.; Cavanaugh, R.; Evdokimov, O.; Gauthier, L.; Gerber, C. E.; Hofman, D. J.; Khalatyan, S.; Lacroix, F.; O'Brien, C.; Silkworth, C.; Strom, D.; Turner, P.; Varelas, N.] Univ Illinois, Chicago, IL USA.
   [Ozdemir, K.; Akgun, U.; Albayrak, E. A.; Bilki, B.; Clarida, W.; Duru, F.; Griffiths, S.; Merlo, J. -P.; Mermerkaya, H.; Mestvirishvili, A.; Moeller, A.; Nachtman, J.; Newsom, C. R.; Norbeck, E.; Onel, Y.; Ozok, F.; Sen, S.; Tan, P.; Tiras, E.; Wetzel, J.; Yetkin, T.; Yi, K.] Univ Iowa, Iowa City, IA USA.
   [Barnett, B. A.; Blumenfeld, B.; Bolognesi, S.; Fehling, D.; Giurgiu, G.; Gritsan, A. V.; Hu, G.; Maksimovic, P.; Swartz, M.; Whitbeck, A.] Johns Hopkins Univ, Baltimore, MD USA.
   [Sibille, J.; Baringer, P.; Bean, A.; Benelli, G.; Iii, R. P. Kenny; Murray, M.; Noonan, D.; Sanders, S.; Stringer, R.; Tinti, G.; Wood, J. S.] Univ Kansas, Lawrence, KS 66045 USA.
   [Barfuss, A. F.; Bolton, T.; Chakaberia, I.; Ivanov, A.; Khalil, S.; Makouski, M.; Maravin, Y.; Shrestha, S.; Svintradze, I.] Kansas State Univ, Manhattan, KS 66506 USA.
   [Gronberg, J.; Lange, D.; Rebassoo, F.; Wright, D.] Lawrence Livermore Natl Lab, Livermore, CA USA.
   [Baden, A.; Calvert, B.; Eno, S. C.; Gomez, J. A.; Hadley, N. J.; Kellogg, R. G.; Kirn, M.; Kolberg, T.; Lu, Y.; Marionneau, M.; Mignerey, A. C.; Pedro, K.; Peterman, A.; Skuja, A.; Temple, J.; Tonjes, M. B.; Tonwar, S. C.] Univ Maryland, College Pk, MD 20742 USA.
   [Apyan, A.; Bauer, G.; Bendavid, J.; Busza, W.; Butz, E.; Cali, I. A.; Chan, M.; Dutta, V.; Ceballos, G. Gomez; Goncharov, M.; Kim, Y.; Klute, M.; Krajczar, K.; Levin, A.; Luckey, P. D.; Ma, T.; Nahn, S.; Paus, C.; Ralph, D.; Roland, C.; Roland, G.; Rudolph, M.; Stephans, G. S. F.; Stoeckli, F.; Sumorok, K.; Sung, K.; Velicanu, D.; Wenger, E. A.; Wolf, R.; Wyslouch, B.; Yang, M.; Yilmaz, Y.; Yoon, A. S.; Zanetti, M.; Zhukova, V.] MIT, Cambridge, MA 02139 USA.
   [Dahmes, B.; De Benedetti, A.; Franzoni, G.; Gude, A.; Haupt, J.; Kao, S. C.; Klapoetke, K.; Kubota, Y.; Mans, J.; Pastika, N.; Rusack, R.; Sasseville, M.; Singovsky, A.; Tambe, N.; Turkewitz, J.] Univ Minnesota, Minneapolis, MN USA.
   [Cremaldi, L. M.; Kroeger, R.; Perera, L.; Rahmat, R.; Sanders, D. A.] Univ Mississippi, Oxford, MS USA.
   [Avdeeva, E.; Bloom, K.; Bose, S.; Claes, D. R.; Dominguez, A.; Eads, M.; Keller, J.; Kravchenko, I.; Lazo-Flores, J.; Malik, S.; Snow, G. R.] Univ Nebraska, Lincoln, NE USA.
   [Godshalk, A.; Iashvili, I.; Jain, S.; Kharchilava, A.; Kumar, A.; Rappoccio, S.; Wan, Z.] SUNY Buffalo, Buffalo, NY 14260 USA.
   [Alverson, G.; Barberis, E.; Baumgartel, D.; Chasco, M.; Haley, J.; Nash, D.; Orimoto, T.; Trocino, D.; Wood, D.; Zhang, J.] Northeastern Univ, Boston, MA 02115 USA.
   [Anastassov, A.; Hahn, K. A.; Kubik, A.; Lusito, L.; Mucia, N.; Odell, N.; Ofierzynski, R. A.; Pollack, B.; Pozdnyakov, A.; Schmitt, M.; Stoynev, S.; Velasco, M.; Won, S.] Northwestern Univ, Evanston, IL USA.
   [Berry, D.; Brinkerhoff, A.; Chan, K. M.; Hildreth, M.; Jessop, C.; Karmgard, D. J.; Kolb, J.; Lannon, K.; Luo, W.; Lynch, S.; Marinelli, N.; Morse, D. M.; Pearson, T.; Planer, M.; Ruchti, R.; Slaunwhite, J.; Valls, N.; Wayne, M.; Wolf, M.] Univ Notre Dame, Notre Dame, IN 46556 USA.
   [Antonelli, L.; Bylsma, B.; Durkin, L. S.; Hill, C.; Hughes, R.; Kotov, K.; Ling, T. Y.; Puigh, D.; Rodenburg, M.; Vuosalo, C.; Williams, G.; Winer, B. L.] Ohio State Univ, Columbus, OH 43210 USA.
   [Berry, E.; Elmer, P.; Halyo, V.; Hebda, P.; Hegeman, J.; Hunt, A.; Jindal, P.; Koay, S. A.; Pegna, D. Lopes; Lujan, P.; Marlow, D.; Medvedeva, T.; Mooney, M.; Olsen, J.; Piroue, P.; Quan, X.; Raval, A.; Saka, H.; Stickland, D.; Tully, C.; Werner, J. S.; Zenz, S. C.; Zuranski, A.] Princeton Univ, Princeton, NJ 08544 USA.
   [Brownson, E.; Lopez, A.; Mendez, H.; Vargas, J. E. Ramirez] Univ Puerto Rico, Mayaguez, PR USA.
   [Alagoz, E.; Barnes, V. E.; Benedetti, D.; Bolla, G.; Bortoletto, D.; De Mattia, M.; Everett, A.; Hu, Z.; Jones, M.; Koybasi, O.; Kress, M.; Laasanen, A. T.; Leonardo, N.; Maroussov, V.; Merkel, P.; Miller, D. H.; Neumeister, N.; Shipsey, I.; Silvers, D.; Svyatkovskiy, A.; Marono, M. Vidal; Yoo, H. D.; Zablocki, J.; Zheng, Y.] Purdue Univ, W Lafayette, IN 47907 USA.
   [Guragain, S.; Parashar, N.] Purdue Univ Calumet, Hammond, IA USA.
   [Adair, A.; Akgun, B.; Boulahouache, C.; Ecklund, K. M.; Geurts, F. J. M.; Li, W.; Padley, B. P.; Redjimi, R.; Roberts, J.; Zabel, J.] Rice Univ, Houston, TX USA.
   [Betchart, B.; Bodek, A.; Chung, Y. S.; Covarelli, R.; de Barbaro, P.; Demina, R.; Eshaq, Y.; Ferbel, T.; Garcia-Bellido, A.; Goldenzweig, P.; Han, J.; Harel, A.; Miner, D. C.; Vishnevskiy, D.; Zielinski, M.] Univ Rochester, Rochester, NY USA.
   [Bhatti, A.; Ciesielski, R.; Demortier, L.; Goulianos, K.; Lungu, G.; Malik, S.; Mesropian, C.] Rockefeller Univ, New York, NY 10021 USA.
   [Arora, S.; Barker, A.; Chou, J. P.; Contreras-Campana, C.; Contreras-Campana, E.; Duggan, D.; Ferencek, D.; Gershtein, Y.; Gray, R.; Halkiadakis, E.; Hidas, D.; Lath, A.; Panwalkar, S.; Park, M.; Patel, R.; Rekovic, V.; Robles, J.; Rose, K.; Salur, S.; Schnetzer, S.; Seitz, C.; Somalwar, S.; Stone, R.; Thomas, S.; Walker, M.] Rutgers State Univ, Piscataway, NJ USA.
   [Cerizza, G.; Hollingsworth, M.; Spanier, S.; Yang, Z. C.; York, A.] Univ Tennessee, Knoxville, TN USA.
   [Eusebi, R.; Flanagan, W.; Gilmore, J.; Kamon, T.; Khotilovich, V.; Montalvo, R.; Osipenkov, I.; Pakhotin, Y.; Perloff, A.; Roe, J.; Safonov, A.; Sakuma, T.; Sengupta, S.; Suarez, I.; Tatarinov, A.; Toback, D.] Texas A&M Univ, College Stn, TX USA.
   [Akchurin, N.; Damgov, J.; Dragoiu, C.; Dudero, P. R.; Jeong, C.; Kovitanggoon, K.; Lee, S. W.; Libeiro, T.; Volobouev, I.] Texas Tech Univ, Lubbock, TX 79409 USA.
   [Appelt, E.; Delannoy, A. G.; Florez, C.; Greene, S.; Gurrola, A.; Johns, W.; Kurt, P.; Maguire, C.; Melo, A.; Sharma, M.; Sheldon, P.; Snook, B.; Tuo, S.; Velkovska, J.] Vanderbilt Univ, Nashville, TN USA.
   [Arenton, M. W.; Balazs, M.; Boutle, S.; Cox, B.; Francis, B.; Goodell, J.; Hirosky, R.; Ledovskoy, A.; Lin, C.; Neu, C.; Wood, J.] Univ Virginia, Charlottesville, VA USA.
   [Gollapinni, S.; Harr, R.; Karchin, P. E.; Don, C. Kottachchi Kankanamge; Lamichhane, P.; Sakharov, A.] Wayne State Univ, Detroit, MI USA.
   [Anderson, M.; Belknap, D. A.; Borrello, L.; Carlsmith, D.; Cepeda, M.; Dasu, S.; Friis, E.; Gray, L.; Grogg, K. S.; Grothe, M.; Hall-Wilton, R.; Herndon, M.; Herve, A.; Klabbers, P.; Klukas, J.; Lanaro, A.; Lazaridis, C.; Loveless, R.; Mohapatra, A.; Mozer, M. U.; Ojalvo, I.; Palmonari, F.; Pierro, G. A.; Ross, I.; Savin, A.; Smith, W. H.; Swanson, J.] Univ Wisconsin, Madison, WI USA.
   [Fabjan, C.; Fruehwirth, R.; Jeitler, M.; Krammer, M.; Wulz, C. -E.] Vienna Univ Technol, A-1040 Vienna, Austria.
   [Giammanco, A.] NICPB, Tallinn, Estonia.
   [Assran, Y.] Suez Canal Univ, Suez, Egypt.
   [Elgammal, S.] Zewail City Sci & Technol, Zewail, Egypt.
   [Kamel, A. Ellithi] Cairo Univ, Cairo, Egypt.
   [Awad, A. M. Kuotb .; Mahmoud, M. A.] Fayoum Univ, Al Fayyum, Egypt.
   [Radi, A.] British Univ Egypt, Cairo, Egypt.
   [Radi, A.] Ain Shams Univ, Cairo, Egypt.
   [Agram, J. -L.; Conte, E.; Drouhin, F.; Fontaine, J. -C.] Univ Haute Alsace, Mulhouse, France.
   [Bergholz, M.; Schmidt, R.] Brandenburg Tech Univ Cottbus, Cottbus, Germany.
   [Vesztergombi, G.; Veres, G. I.] Eotvos Lorand Univ, Budapest, Hungary.
   [Gurtu, A.] King Abdulaziz Univ, Jeddah 21413, Saudi Arabia.
   [Maity, M.] Visva Bharati Univ, Santini Ketan, W Bengal, India.
   [Arfaei, H.; Fahim, A.] Sharif Univ Technol, Tehran, Iran.
   [Etesami, S. M.] Isfahan Univ Technol, Esfahan, Iran.
   [Hashemi, M.] Shiraz Univ, Shiraz, Iran.
   [Safarzadeh, B.] Islamic Azad Univ, Plasma Phys Res Ctr, Sci & Res Branch, Tehran, Iran.
   [Colafranceschi, S.] Univ Rome, Fac Ingn, Rome, Italy.
   [Meola, S.] Univ Guglielmo Marconi, Rome, Italy.
   [Martini, L.] Univ Siena, I-53100 Siena, Italy.
   [Serban, A. T.] Univ Bucharest, Fac Phys, Bucharest, Romania.
   [Rolandi, G.] Sezione Ist Nazl Fis Nucl, Pisa, Italy.
   [Amsler, C.] Albert Einstein Ctr Fundamental Phys, Bern, Switzerland.
   [Bakirci, M. N.; Topakli, H.] Gaziosmanpasa Univ, Tokat, Turkey.
   [Cerci, S.; Cerci, D. Sunar; Tali, B.] Adiyaman Univ, Adiyaman, Turkey.
   [Karapinar, G.] Izmir Inst Technol, Izmir, Turkey.
   [Sogut, K.] Mersin Univ, Mersin, Turkey.
   [Isildak, B.] Ozyegin Univ, Istanbul, Turkey.
   [Kaya, M.; Kaya, O.] Kafkas Univ, Kars, Turkey.
   [Ozkorucuklu, S.] Suleyman Demirel Univ, TR-32200 Isparta, Turkey.
   [Sonmez, N.] Ege Univ, Izmir, Turkey.
   [Bahtiyar, H.; Ozok, F.] Mimar Sinan Univ, Istanbul, Turkey.
   [Gunaydin, Y. O.] Kahramanmaras Sutcu Imam Univ, TR-46050 Kahramanmaras, Turkey.
   [Basso, L.; Belyaev, A.] Univ Southampton, Sch Phys & Astron, Southampton, Hants, England.
   [Pioppi, M.] Univ Perugia, INFN Sez Perugia, I-06100 Perugia, Italy.
   [Wasserbaech, S.] Utah Valley Univ, Orem, UT USA.
   [Leonidopoulos, C.] Univ Edinburgh, Edinburgh, Midlothian, Scotland.
   [Bilki, B.] Argonne Natl Lab, Argonne, IL 60439 USA.
   [Mermerkaya, H.] Erzincan Univ, Erzincan, Turkey.
   [Yetkin, T.] Yildiz Tekn Univ, Istanbul, Turkey.
RP Chatrchyan, S (reprint author), Yerevan Phys Inst, Yerevan 375036, Armenia.
RI Liu, Sheng/K-2815-2013; Zhukov, Valery/K-3615-2013; Venturi,
   Andrea/J-1877-2012; Cavallo, Nicola/F-8913-2012; Mundim,
   Luiz/A-1291-2012; Kodolova, Olga/D-7158-2012; Ivanov,
   Andrew/A-7982-2013; Tinti, Gemma/I-5886-2013; Lokhtin, Igor/D-7004-2012;
   Petrushanko, Sergey/D-6880-2012; Tomei, Thiago/E-7091-2012; Zalewski,
   Piotr/H-7335-2013; Hill, Christopher/B-5371-2012; Menasce, Dario
   Livio/A-2168-2016; Bargassa, Pedrame/O-2417-2016; Rolandi, Luigi
   (Gigi)/E-8563-2013; Sguazzoni, Giacomo/J-4620-2015; Vilela Pereira,
   Antonio/L-4142-2016; Haj Ahmad, Wael/E-6738-2016; Xie, Si/O-6830-2016;
   Leonardo, Nuno/M-6940-2016; Goh, Junghwan/Q-3720-2016; Ruiz,
   Alberto/E-4473-2011; Govoni, Pietro/K-9619-2016; Yazgan,
   Efe/C-4521-2014; Inst. of Physics, Gleb Wataghin/A-9780-2017;
   Lazzizzera, Ignazio/E-9678-2015; TUVE', Cristina/P-3933-2015; KIM, Tae
   Jeong/P-7848-2015; Arce, Pedro/L-1268-2014; Flix, Josep/G-5414-2012;
   Della Ricca, Giuseppe/B-6826-2013; Azarkin, Maxim/N-2578-2015; Dubinin,
   Mikhail/I-3942-2016; Paganoni, Marco/A-4235-2016; Kirakosyan,
   Martin/N-2701-2015; Gulmez, Erhan/P-9518-2015; Seixas, Joao/F-5441-2013;
   Sznajder, Andre/L-1621-2016; Stahl, Achim/E-8846-2011; Trocsanyi,
   Zoltan/A-5598-2009; Konecki, Marcin/G-4164-2015; Hernandez Calama, Jose
   Maria/H-9127-2015; Bedoya, Cristina/K-8066-2014; My,
   Salvatore/I-5160-2015; Matorras, Francisco/I-4983-2015; Rovelli,
   Tiziano/K-4432-2015; Dremin, Igor/K-8053-2015; Hoorani,
   Hafeez/D-1791-2013; Leonidov, Andrey/M-4440-2013; Andreev,
   Vladimir/M-8665-2015; Vogel, Helmut/N-8882-2014; Ferguson,
   Thomas/O-3444-2014; Ragazzi, Stefano/D-2463-2009; Benussi,
   Luigi/O-9684-2014; Leonidov, Andrey/P-3197-2014; vilar,
   rocio/P-8480-2014; Dahms, Torsten/A-8453-2015; Grandi,
   Claudio/B-5654-2015; Raidal, Martti/F-4436-2012; Bernardes, Cesar
   Augusto/D-2408-2015; VARDARLI, Fuat Ilkehan/B-6360-2013; Sen,
   Sercan/C-6473-2014; D'Alessandro, Raffaello/F-5897-2015; Belyaev,
   Alexander/F-6637-2015; Wulz, Claudia-Elisabeth/H-5657-2011; Codispoti,
   Giuseppe/F-6574-2014; Gunaydin, Yusuf/F-7300-2014; Montanari,
   Alessandro/J-2420-2012; Gribushin, Andrei/J-4225-2012; Cerrada,
   Marcos/J-6934-2014; Calderon, Alicia/K-3658-2014; de la Cruz,
   Begona/K-7552-2014; Scodellaro, Luca/K-9091-2014; Josa,
   Isabel/K-5184-2014; Calvo Alamillo, Enrique/L-1203-2014; Paulini,
   Manfred/N-7794-2014; Manganote, Edmilson/K-8251-2013; Wimpenny,
   Stephen/K-8848-2013; Markina, Anastasia/E-3390-2012; Dudko,
   Lev/D-7127-2012; Tinoco Mendes, Andre David/D-4314-2011; Wolszczak,
   Weronika/N-3113-2013; Marlow, Daniel/C-9132-2014; de Jesus Damiao,
   Dilson/G-6218-2012; Janssen, Xavier/E-1915-2013; Novaes,
   Sergio/D-3532-2012; Bartalini, Paolo/E-2512-2014; Ligabue,
   Franco/F-3432-2014
OI Gonzi, Sandro/0000-0003-4754-645X; Levchenko, Petr/0000-0003-4913-0538;
   Mundim, Luiz/0000-0001-9964-7805; Ivanov, Andrew/0000-0002-9270-5643;
   Tomei, Thiago/0000-0002-1809-5226; Hill,
   Christopher/0000-0003-0059-0779; Casarsa, Massimo/0000-0002-1353-8964;
   Diemoz, Marcella/0000-0002-3810-8530; Tricomi, Alessia
   Rita/0000-0002-5071-5501; Heredia De La Cruz, Ivan/0000-0002-8133-6467;
   Ghezzi, Alessio/0000-0002-8184-7953; bianco,
   stefano/0000-0002-8300-4124; Demaria, Natale/0000-0003-0743-9465;
   Benaglia, Andrea Davide/0000-0003-1124-8450; Covarelli,
   Roberto/0000-0003-1216-5235; Ciulli, Vitaliano/0000-0003-1947-3396;
   Fiorendi, Sara/0000-0003-3273-9419; Martelli,
   Arabella/0000-0003-3530-2255; Bean, Alice/0000-0001-5967-8674; Longo,
   Egidio/0000-0001-6238-6787; Di Matteo, Leonardo/0000-0001-6698-1735;
   Baarmand, Marc/0000-0002-9792-8619; Boccali,
   Tommaso/0000-0002-9930-9299; Menasce, Dario Livio/0000-0002-9918-1686;
   Bargassa, Pedrame/0000-0001-8612-3332; Attia Mahmoud,
   Mohammed/0000-0001-8692-5458; Bilki, Burak/0000-0001-9515-3306; Lloret
   Iglesias, Lara/0000-0002-0157-4765; Rolandi, Luigi
   (Gigi)/0000-0002-0635-274X; Sguazzoni, Giacomo/0000-0002-0791-3350;
   Vilela Pereira, Antonio/0000-0003-3177-4626; Haj Ahmad,
   Wael/0000-0003-1491-0446; Xie, Si/0000-0003-2509-5731; Leonardo,
   Nuno/0000-0002-9746-4594; Goh, Junghwan/0000-0002-1129-2083; Ruiz,
   Alberto/0000-0002-3639-0368; Govoni, Pietro/0000-0002-0227-1301; Yazgan,
   Efe/0000-0001-5732-7950; Vieira de Castro Ferreira da Silva, Pedro
   Manuel/0000-0002-5725-041X; Lazzizzera, Ignazio/0000-0001-5092-7531;
   TUVE', Cristina/0000-0003-0739-3153; KIM, Tae Jeong/0000-0001-8336-2434;
   Arce, Pedro/0000-0003-3009-0484; Flix, Josep/0000-0003-2688-8047; Della
   Ricca, Giuseppe/0000-0003-2831-6982; Dubinin,
   Mikhail/0000-0002-7766-7175; Paganoni, Marco/0000-0003-2461-275X;
   Gulmez, Erhan/0000-0002-6353-518X; Seixas, Joao/0000-0002-7531-0842;
   Sznajder, Andre/0000-0001-6998-1108; Stahl, Achim/0000-0002-8369-7506;
   Trocsanyi, Zoltan/0000-0002-2129-1279; Konecki,
   Marcin/0000-0001-9482-4841; Hernandez Calama, Jose
   Maria/0000-0001-6436-7547; Bedoya, Cristina/0000-0001-8057-9152; My,
   Salvatore/0000-0002-9938-2680; Matorras, Francisco/0000-0003-4295-5668;
   Rovelli, Tiziano/0000-0002-9746-4842; Vogel, Helmut/0000-0002-6109-3023;
   Ferguson, Thomas/0000-0001-5822-3731; Ragazzi,
   Stefano/0000-0001-8219-2074; Benussi, Luigi/0000-0002-2363-8889; Dahms,
   Torsten/0000-0003-4274-5476; Grandi, Claudio/0000-0001-5998-3070; Sen,
   Sercan/0000-0001-7325-1087; D'Alessandro, Raffaello/0000-0001-7997-0306;
   Belyaev, Alexander/0000-0002-1733-4408; Wulz,
   Claudia-Elisabeth/0000-0001-9226-5812; Codispoti,
   Giuseppe/0000-0003-0217-7021; Gunaydin, Yusuf/0000-0002-0514-6936;
   Montanari, Alessandro/0000-0003-2748-6373; Cerrada,
   Marcos/0000-0003-0112-1691; Scodellaro, Luca/0000-0002-4974-8330; Calvo
   Alamillo, Enrique/0000-0002-1100-2963; Paulini,
   Manfred/0000-0002-6714-5787; Wimpenny, Stephen/0000-0003-0505-4908;
   Dudko, Lev/0000-0002-4462-3192; Tinoco Mendes, Andre
   David/0000-0001-5854-7699; de Jesus Damiao, Dilson/0000-0002-3769-1680;
   Novaes, Sergio/0000-0003-0471-8549; Ligabue, Franco/0000-0002-1549-7107
FU BMWF (Austria); FWF (Austria); FNRS (Belgium); FWO (Belgium); CNPq
   (Brazil); CAPES (Brazil); FAPERJ (Brazil); FAPESP (Brazil); MEYS
   (Bulgaria); CERN; CAS (China); MoST (China); NSFC (China); COLCIENCIAS
   (Colombia); MSES (Croatia); RPF (Cyprus); MoER (Estonia) [SF0690030s09];
   ERDF (Estonia); Academy of Finland (Finland); MEC (Finland); HIP
   (Finland); CEA (France); CNRS/IN2P3 (France); BMBF (Germany); DFG
   (Germany); HGF (Germany); GSRT (Greece); OTKA (Hungary); NKTH (Hungary);
   DAE (India); DST (India); IPM (Iran); SFI (Ireland); INFN (Italy); NRF
   (Republic of Korea); WCU (Republic of Korea); LAS (Lithuania); CINVESTAV
   (Mexico); CONACYT (Mexico); SEP (Mexico); UASLP-FAI (Mexico); MSI (New
   Zealand); PAEC (Pakistan); MSHE (Poland); NSC (Poland); FCT (Portugal);
   JINR (Armenia); JINR (Belarus); JINR (Georgia); JINR (Ukraine); JINR
   (Uzbekistan); MON (Russia); RosAtom (Russia); RAS (Russia); RFBR
   (Russia); MSTD (Serbia); SEIDI (Spain); CPAN (Spain); Swiss Funding
   Agencies (Switzerland); NSC (Taipei); ThEPCenter (Thailand); IPST
   (Thailand); NSTDA (Thailand); TUBITAK (Turkey); TAEK (Turkey); NASU
   (Ukraine); STFC (United Kingdom); DOE (USA); NSF (USA)
FX We congratulate our colleagues in the CERN accelerator departments for
   the excellent performance of the LHC and thank the technical and
   administrative staffs at CERN and at other CMS institutes for their
   contributions to the success of the CMS effort. In addition, we
   gratefully acknowledge the computing centers and personnel of the
   Worldwide LHC Computing Grid for delivering so effectively the computing
   infrastructure essential to our analyses. Finally, we acknowledge the
   enduring support for the construction and operation of the LHC and the
   CMS detector provided by the following funding agencies: BMWF and FWF
   (Austria); FNRS and FWO (Belgium); CNPq, CAPES, FAPERJ, and FAPESP
   (Brazil); MEYS (Bulgaria); CERN; CAS, MoST, and NSFC (China);
   COLCIENCIAS (Colombia); MSES (Croatia); RPF (Cyprus); MoER,
   SF0690030s09, and ERDF (Estonia); Academy of Finland, MEC, and HIP
   (Finland); CEA and CNRS/IN2P3 (France); BMBF, DFG, and HGF (Germany);
   GSRT (Greece); OTKA and NKTH (Hungary); DAE and DST (India); IPM (Iran);
   SFI (Ireland); INFN (Italy); NRF and WCU (Republic of Korea); LAS
   (Lithuania); CINVESTAV, CONACYT, SEP, and UASLP-FAI (Mexico); MSI (New
   Zealand); PAEC (Pakistan); MSHE and NSC (Poland); FCT (Portugal); JINR
   (Armenia, Belarus, Georgia, Ukraine, Uzbekistan); MON, RosAtom, RAS, and
   RFBR (Russia); MSTD (Serbia); SEIDI and CPAN (Spain); Swiss Funding
   Agencies (Switzerland); NSC (Taipei); ThEPCenter, IPST and NSTDA
   (Thailand); TUBITAK and TAEK (Turkey); NASU (Ukraine); STFC (United
   Kingdom); DOE and NSF (USA).
NR 24
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PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
EI 1079-7114
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD APR 25
PY 2013
VL 110
IS 17
AR 172002
DI 10.1103/PhysRevLett.110.172002
PG 15
WC Physics, Multidisciplinary
SC Physics
GA 134CU
UT WOS:000318188100004
PM 23679709
ER

PT J
AU Lang, JM
   Darling, AE
   Eisen, JA
AF Lang, Jenna Morgan
   Darling, Aaron E.
   Eisen, Jonathan A.
TI Phylogeny of Bacterial and Archaeal Genomes Using Conserved Genes:
   Supertrees and Supermatrices
SO PLOS ONE
LA English
DT Article
ID SULFATE-REDUCING BACTERIUM; MATRIX REPRESENTATION; SP-NOV.; HORIZONTAL
   TRANSFER; MAXIMUM-LIKELIHOOD; SPECIES TREES; DATA SETS; EVOLUTION; LIFE;
   RECONSTRUCTION
AB Over 3000 microbial (bacterial and archaeal) genomes have been made publically available to date, providing an unprecedented opportunity to examine evolutionary genomic trends and offering valuable reference data for a variety of other studies such as metagenomics. The utility of these genome sequences is greatly enhanced when we have an understanding of how they are phylogenetically related to each other. Therefore, we here describe our efforts to reconstruct the phylogeny of all available bacterial and archaeal genomes. We identified 24, single-copy, ubiquitous genes suitable for this phylogenetic analysis. We used two approaches to combine the data for the 24 genes. First, we concatenated alignments of all genes into a single alignment from which a Maximum Likelihood (ML) tree was inferred using RAxML. Second, we used a relatively new approach to combining gene data, Bayesian Concordance Analysis (BCA), as implemented in the BUCKy software, in which the results of 24 single-gene phylogenetic analyses are used to generate a "primary concordance'' tree. A comparison of the concatenated ML tree and the primary concordance (BUCKy) tree reveals that the two approaches give similar results, relative to a phylogenetic tree inferred from the 16S rRNA gene. After comparing the results and the methods used, we conclude that the current best approach for generating a single phylogenetic tree, suitable for use as a reference phylogeny for comparative analyses, is to perform a maximum likelihood analysis of a concatenated alignment of conserved, single-copy genes.
C1 [Lang, Jenna Morgan; Darling, Aaron E.; Eisen, Jonathan A.] Univ Calif Davis, Dept Med Microbiol & Immunol, Davis, CA 95616 USA.
   [Lang, Jenna Morgan; Darling, Aaron E.; Eisen, Jonathan A.] Univ Calif Davis, Dept Ecol & Evolut, Davis, CA 95616 USA.
   [Lang, Jenna Morgan; Eisen, Jonathan A.] Joint Genome Inst, Dept Energy, Walnut Creek, CA USA.
RP Eisen, JA (reprint author), Univ Calif Davis, Dept Med Microbiol & Immunol, Davis, CA 95616 USA.
EM jaeisen@ucdavis.edu
OI Lang, Jenna/0000-0002-4871-4497; Eisen, Jonathan A./0000-0002-0159-2197;
   Darling, Aaron/0000-0003-2397-7925
FU US Department of Energy's Office of Science, Biological and
   Environmental Research Program; University of California, Lawrence
   Berkeley National Laboratory [DE-AC02-05CH11231]; Gordon and Betty Moore
   Foundation [1660]; Department of Homeland Security [201118313]
FX This work was performed under the auspices of the US Department of
   Energy's Office of Science, Biological and Environmental Research
   Program, and by the University of California, Lawrence Berkeley National
   Laboratory under contract no. DE-AC02-05CH11231. Funding was also
   provided by Gordon and Betty Moore Foundation Grant 1660 (www.moore.org)
   and Department of Homeland Security contract #201118313. The funders had
   no role in study design, data collection and analysis, decision to
   publish, or preparation of the manuscript.
NR 85
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U1 4
U2 46
PU PUBLIC LIBRARY SCIENCE
PI SAN FRANCISCO
PA 1160 BATTERY STREET, STE 100, SAN FRANCISCO, CA 94111 USA
SN 1932-6203
J9 PLOS ONE
JI PLoS One
PD APR 25
PY 2013
VL 8
IS 4
AR e62510
DI 10.1371/journal.pone.0062510
PG 15
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA 136DM
UT WOS:000318341400055
PM 23638103
ER

PT J
AU Cordones, AA
   Knappenberger, KL
   Leone, SR
AF Cordones, Amy A.
   Knappenberger, Kenneth L., Jr.
   Leone, Stephen R.
TI Linking On-State Memory and Distributed Kinetics in Single Nanocrystal
   Blinking
SO JOURNAL OF PHYSICAL CHEMISTRY B
LA English
DT Article
ID QUANTUM DOTS; FLUORESCENCE INTERMITTENCY; CDSE; STATISTICS
AB Memory effects in single nanocrystal fluorescence blinking are investigated as a function of the on-state kinetics for CdSe/ZnS quantum dots and CdSe nanorods. The on-state duration probability distributions for single nanocrystal blinking traces are characterized by an inverse power law, which crosses over to exponential decay for long on-state durations. The correlations of subsequent on-state durations (R-log,R-on) are found to decrease for nanocrystals that display earlier crossover times and smaller power law coefficients. Specifically, R-log,R-on increases from 0.14 +/- 0.02 to a saturation value of 0.44 +/- 0.01 for nanocrystals with average crossover times of similar to 100 ms to more than 5.0 s, respectively. The results represent the first link between memory effects and blinking kinetics and are interpreted in the framework of two competing charge trapping mechanisms. A slow fluctuation-based trapping mechanism leads to power-law-distributed on durations and significant memory effects; however, the additional contribution of an ionization induced trapping pathway is found to induce crossover to exponential decay and decreased memory. Monte Carlo simulations of nanocrystal blinking based on the two trapping mechanisms reproduce the experimental results, suggesting that the power law component and the memory effects correlate with a fluctuation-based mechanism. This effect is found to be universal, occurring for two nanocrystal morphologies and in blinking data measured using a wide range of continuous and pulsed excitation conditions.
C1 [Cordones, Amy A.; Leone, Stephen R.] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA.
   [Cordones, Amy A.; Leone, Stephen R.] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
   [Cordones, Amy A.; Leone, Stephen R.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
   [Knappenberger, Kenneth L., Jr.] Florida State Univ, Dept Chem & Biochem, Tallahassee, FL 32306 USA.
RP Leone, SR (reprint author), Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA.
EM srl@berkeley.edu
FU Office of Science, Office of Basic Energy Sciences, U.S. Department of
   Energy through the Materials Research Division [DE-AC02-05CH11231]
FX The authors gratefully acknowledge financial support by the Director,
   Office of Science, Office of Basic Energy Sciences, U.S. Department of
   Energy under Contract No. DE-AC02-05CH11231 through the Materials
   Research Division.
NR 28
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U2 17
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1520-6106
J9 J PHYS CHEM B
JI J. Phys. Chem. B
PD APR 25
PY 2013
VL 117
IS 16
SI SI
BP 4241
EP 4248
DI 10.1021/jp3041549
PG 8
WC Chemistry, Physical
SC Chemistry
GA 134LL
UT WOS:000318211600010
PM 22967127
ER

PT J
AU Bao, JH
   Yu, ZH
   Gundlach, L
   Benedict, JB
   Coppens, P
   Chen, HC
   Miller, JR
   Piotrowiak, P
AF Bao, Jianhua
   Yu, Zhihao
   Gundlach, Lars
   Benedict, Jason B.
   Coppens, Philip
   Chen, Hung Cheng
   Miller, John R.
   Piotrowiak, Piotr
TI Excitons and Excess Electrons in Nanometer Size Molecular
   Polyoxotitanate Clusters: Electronic Spectra, Exciton Dynamics, and
   Surface States
SO JOURNAL OF PHYSICAL CHEMISTRY B
LA English
DT Article
ID SMALL SEMICONDUCTOR CRYSTALLITES; PHOTOPHYSICAL PROPERTIES;
   ABSORPTION-SPECTROSCOPY; NANOSCALE SYSTEMS; TIO2 PARTICLES; QUANTUM
   DOTS; ANATASE TIO2; BROOKITE; IDENTIFICATION; REACTIVITY
AB The behavior of excitons and excess electrons in the confined space of a molecular polyoxotitanate cluster Ti-17(mu(4)-O)(4)(mu(3)-O)(16)(mu(2)-O)(4)(OPri)(20) (in short Ti17) was studied using femtosecond pump-probe transient absorption, pulse radiolysis, and fluorescence spectroscopy. Due to pronounced quantum size effects, the electronic spectra of the exciton, Ti17*, and the excess electron carrying radical anion, Ti17(center dot-), are blue-shifted in comparison with bulk TiO2 and have maxima at 1.91 and 1.24 eV, respectively. The 0.7 eV difference in the position of the absorption maxima of Ti17* and Ti17(center dot-) indicates the presence of strong Coulomb interaction between the conduction band electron and the valence band hole in the similar to 1 nm diameter cluster. Ground state Raman spectra and the vibronic structure of the fluorescence spectrum point to the importance of the interfacial ligand modes in the stabilization and localization of the fully relaxed exciton. Four pentacoordinate Ti sites near the surface of the cluster appear to play a special role in this regard. Solvent polarity has only a minor influence on the spectral behavior of Ti17*. Exciton recombination in Ti17 is faster than in anatase nanoparticles or mesoporous films. The kinetics exhibits three components, ranging from less than 1 ps to 100 ps, which are tentatively assigned to the geminate recombination within the core of the cluster and to the decay of the surface stabilized charge transfer exciton. A persistent long-lived component with tau > 300 ps may indicate the involvement of intraband dark states, i.e., triplet excitons (3)Ti17*.
C1 [Bao, Jianhua; Yu, Zhihao; Gundlach, Lars; Piotrowiak, Piotr] Rutgers State Univ, Dept Chem, Newark, NJ 07102 USA.
   [Benedict, Jason B.; Coppens, Philip] SUNY Buffalo, Dept Chem, Buffalo, NY 14260 USA.
   [Chen, Hung Cheng; Miller, John R.] Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA.
RP Piotrowiak, P (reprint author), Rutgers State Univ, Dept Chem, Newark, NJ 07102 USA.
EM piotr@andromeda.rutgers.edu
RI Benedict, Jason/D-7342-2011
OI Benedict, Jason/0000-0002-8992-7165
FU Division of Chemical Sciences, Geosciences, and Biosciences, Office of
   Basic Energy Sciences of the U.S. Department of Energy
   [DE-FG02-06ER15828, DE-FG02-02ER15372, DE-AC02-98-CH10886]; National
   Science Foundation CRIF [0342432]
FX The work at Rutgers University was supported by Division of Chemical
   Sciences, Geosciences, and Biosciences, Office of Basic Energy Sciences
   of the U.S. Department of Energy through Grant No. DE-FG02-06ER15828 to
   P.P. The work at University at Buffalo was funded by the Division of
   Chemical Sciences, Geosciences, and Biosciences, Office of Basic Energy
   Sciences of the U.S. Department of Energy through Grant
   DE-FG02-02ER15372 to P.C. The femtosecond laser instrumentation used to
   carry out this research was funded by National Science Foundation CRIF
   Grant No. 0342432 to P.P. The authors gratefully acknowledge support of
   the Division of Chemical Sciences, Geosciences, and Biosciences, Office
   of Basic Energy Sciences of the U.S. Department of Energy through Grant
   No. DE-AC02-98-CH10886 to all authors, and for use of the LEAF Facility
   of the BNL Accelerator Center for Energy Research. We are grateful to
   Prof. Richard Mendelsohn for the help with the Raman measurements, Prof.
   Frieder Jaekle for the access to one of his glove boxes, and Prof.
   Galoppini for the loan of the spectro-electrochemistry setup. We thank
   Prof. Victor Batista and his group for sharing with us their
   computational results on the related Ti17cat4 polyoxotitanate cluster.
NR 44
TC 5
Z9 5
U1 3
U2 62
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1520-6106
J9 J PHYS CHEM B
JI J. Phys. Chem. B
PD APR 25
PY 2013
VL 117
IS 16
SI SI
BP 4422
EP 4430
DI 10.1021/jp307724v
PG 9
WC Chemistry, Physical
SC Chemistry
GA 134LL
UT WOS:000318211600031
PM 23113586
ER

PT J
AU Johnson, JC
   Akdag, A
   Zamadar, M
   Chen, XD
   Schwerin, AF
   Paci, I
   Smith, MB
   Havlas, Z
   Miller, JR
   Ratner, MA
   Nozik, AJ
   Michl, J
AF Johnson, Justin C.
   Akdag, Akin
   Zamadar, Matibur
   Chen, Xudong
   Schwerin, Andrew F.
   Paci, Irina
   Smith, Millicent B.
   Havlas, Zdenek
   Miller, John R.
   Ratner, Mark A.
   Nozik, Arthur J.
   Michl, Josef
TI Toward Designed Singlet Fission: Solution Photophysics of Two Indirectly
   Coupled Covalent Dimers of 1,3-Diphenylisobenzofuran
SO JOURNAL OF PHYSICAL CHEMISTRY B
LA English
DT Article
ID DENSITY-FUNCTIONAL THEORY; INTRAMOLECULAR CHARGE-TRANSFER;
   ELECTRON-TRANSFER; EXCITON FISSION; TRANSFER EXCITATIONS; SOLAR-CELLS;
   STATES; MOLECULES; DYNAMICS; PHOTOISOMERIZATION
AB In order to identify optimal conditions for singlet fission, we are examining the photophysics of 1,3-diphenylisobenzofuran (1) dimers covalently coupled in various ways. In the two dimers studied presently, the coupling is weak. The subunits are linked via the para position of one of the phenyl substituents, in one case (2) through a CH2 linker and in the other (3) directly, but with methyl substituents in ortho positions forcing a nearly perpendicular twist between the two joint phenyl rings. The measurements are accompanied with density functional theory (DFT) and time-dependent DFT (TD-DFT) calculations. Although in neat solid state, 1 undergoes singlet fission with a rate constant higher than 10(11) s(-1); in nonpolar solutions of 2 and 3, the triplet formation rate constant is less than 10(6) s(-1) and fluorescence is the only significant event following electronic excitation. In polar solvents, fluorescence is weaker because the initial excited singlet state S-1 equilibrates by sub-nanosecond charge transfer with a nonemissive dipolar species in which a radical cation of 1 is attached to a radical anion of 1. Most of this charge transfer species decays to S-0, and some is converted into triplet T-1 with a rate constant near 10(8) s(-1). Experimental uncertainties prevent an accurate determination of the number of T-1 excitations that result when a single S-1 excitation changes into triplet excitation. It would be one if the charge-transfer species undergoes ordinary intersystem crossing and two if it undergoes the second step of two-step singlet fission. The triplet yield maximizes below room temperature to a value of roughly 9% for 3 and 4% for 2. Above similar to 360 K, some of the S-1 molecules of 3 are converted into an isomeric charge-transfer species with a shorter lifetime, possibly with a twisted intramolecular charge transfer (TICT) structure. This is not observed in 2.
C1 [Johnson, Justin C.; Nozik, Arthur J.] Natl Renewable Energy Lab, Golden, CO 80401 USA.
   [Akdag, Akin; Chen, Xudong; Schwerin, Andrew F.; Smith, Millicent B.; Michl, Josef] Univ Colorado, Dept Chem & Biochem, Boulder, CO 80309 USA.
   [Akdag, Akin] Middle E Tech Univ, Dept Chem, TR-06800 Ankara, Turkey.
   [Zamadar, Matibur; Miller, John R.] Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA.
   [Havlas, Zdenek; Michl, Josef] Acad Sci Czech Republic, Inst Organ Chem & Biochem, CR-16610 Prague, Czech Republic.
   [Paci, Irina; Ratner, Mark A.] Northwestern Univ, Dept Chem, Evanston, IL 60208 USA.
   [Paci, Irina; Ratner, Mark A.] Northwestern Univ, Mat Res Ctr, Evanston, IL 60208 USA.
RP Johnson, JC (reprint author), Natl Renewable Energy Lab, Golden, CO 80401 USA.
RI Havlas, Zdenek/B-2164-2012; Michl, Josef/G-9376-2014; Nozik,
   Arthur/A-1481-2012; Nozik, Arthur/P-2641-2016
OI Havlas, Zdenek/0000-0002-8369-7303; 
FU U.S. Department of Energy, Office of Basic Energy Sciences, Division of
   Chemical and Biosciences [DE-AC36-08GO28308]; NREL for optical
   spectroscopy of dimers at CU-Boulder for dimer synthesis and
   calculations [DE-SC0007004]; BNL for pulsed radiolysis experiments
   including use of the LEAF Facility of the BNL Accelerator Center for
   Energy Research [DE-AC02-98-CH10886]; MRSEC; Northwestern Materials
   Research Science and Engineering Center [DMR-1121262]; Institute of
   Organic Chemistry and Biochemistry [RVO:61388963]; Czech Science
   Foundation [P208/12/G016]
FX This material is based upon work supported by the U.S. Department of
   Energy, Office of Basic Energy Sciences, Division of Chemical and
   Biosciences, under Contract DE-AC36-08GO28308 with NREL for optical
   spectroscopy of dimers, DE-SC0007004 at CU-Boulder for dimer synthesis
   and calculations, and DE-AC02-98-CH10886 with BNL for pulsed radiolysis
   experiments including use of the LEAF Facility of the BNL Accelerator
   Center for Energy Research. Theoretical work at Northwestern University
   was supported by the MRSEC program and the Northwestern Materials
   Research Science and Engineering Center (DMR-1121262). Theory work in
   Prague was supported by the Institute of Organic Chemistry and
   Biochemistry (RVO:61388963) and the Czech Science Foundation
   (P208/12/G016).
NR 46
TC 37
Z9 37
U1 4
U2 100
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1520-6106
J9 J PHYS CHEM B
JI J. Phys. Chem. B
PD APR 25
PY 2013
VL 117
IS 16
SI SI
BP 4680
EP 4695
DI 10.1021/jp310979q
PG 16
WC Chemistry, Physical
SC Chemistry
GA 134LL
UT WOS:000318211600063
PM 23383860
ER

PT J
AU Stickrath, AB
   Mara, MW
   Lockard, JV
   Harpham, MR
   Huang, J
   Zhang, XY
   Attenkofer, K
   Chen, LX
AF Stickrath, Andrew B.
   Mara, Michael W.
   Lockard, Jenny V.
   Harpham, Michael R.
   Huang, Jier
   Zhang, Xiaoyi
   Attenkofer, Klaus
   Chen, Lin X.
TI Detailed Transient Heme Structures of Mb-CO in Solution after CO
   Dissociation: An X-ray Transient Absorption Spectroscopic Study
SO JOURNAL OF PHYSICAL CHEMISTRY B
LA English
DT Article
ID FINE-STRUCTURE TECHNIQUE; NEAR-EDGE STRUCTURE; EXCITED-STATE;
   MOLECULAR-STRUCTURES; BIOACTIVE NO; MYOGLOBIN; CRYSTALLOGRAPHY;
   DYNAMICS; PHOTOLYSIS; SCATTERING
AB Although understanding the structural dynamics associated with ligand photodissociation is necessary in order to correlate structure and function in biological systems, few techniques are capable of measuring the ultrafast dynamics of these systems in solution-phase at room temperature. We present here a detailed X-ray transient absorption (XTA) study of the photodissociation of CO-bound myoglobin (Fe(II)CO-Mb) in room-temperature aqueous buffer solution with a time resolution of 80 ps, along with a general procedure for handling biological samples under the harsh experimental conditions that transient X-ray experiments entail. The XTA spectra of (Fe(II)CO-Mb) exhibit significant XANES and XAFS alterations following 527 nm excitation, which remain unchanged for >47 mu s. These spectral changes indicate loss of the CO ligand, resulting in a five-coordinate, domed heme, and significant energetic reorganization of the 3d orbitals of the Fe center. With the current experimental setup, each X-ray pulse in the pulse train, separated by similar to 153 ns, can be separately discriminated, yielding snapshots of the myoglobin evolution over time. These methods can be easily applied to other biological systems, allowing for simultaneous structural and electronic measurements of any biological system with both ultrafast and slow time resolutions, effectively mapping out all of the samples' relevant physiological processes.
C1 [Stickrath, Andrew B.; Mara, Michael W.; Lockard, Jenny V.; Harpham, Michael R.; Huang, Jier; Zhang, Xiaoyi; Attenkofer, Klaus; Chen, Lin X.] Argonne Natl Lab, Adv Photon Source, Chem Sci & Engn Div, Lemont, IL 60439 USA.
   [Stickrath, Andrew B.; Mara, Michael W.; Lockard, Jenny V.; Harpham, Michael R.; Huang, Jier; Zhang, Xiaoyi; Attenkofer, Klaus; Chen, Lin X.] Argonne Natl Lab, Adv Photon Source, Xray Sci Div, Lemont, IL 60439 USA.
   [Mara, Michael W.; Chen, Lin X.] Northwestern Univ, Dept Chem, Evanston, IL 60208 USA.
RP Chen, LX (reprint author), Argonne Natl Lab, Adv Photon Source, Chem Sci & Engn Div, 9700 South Cass Ave, Lemont, IL 60439 USA.
EM lchen@anl.gov
FU U.S. Department of Energy, Office of Basic Energy Sciences, Division of
   Chemical Sciences, Geosciences, and Biosciences [DE-AC02-06CH11357];
   U.S. Department of Energy, Office of Science, Office of Basic Energy
   Sciences [DE-AC02-06CH11357]
FX Work at ANL was partially supported by the U.S. Department of Energy,
   Office of Basic Energy Sciences, Division of Chemical Sciences,
   Geosciences, and Biosciences, under Contract DE-AC02-06CH11357. Use of
   the Advanced Photon Source was supported by the U.S. Department of
   Energy, Office of Science, Office of Basic Energy Sciences, under
   Contract No. DE-AC02-06CH11357.
NR 42
TC 11
Z9 11
U1 2
U2 30
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1520-6106
J9 J PHYS CHEM B
JI J. Phys. Chem. B
PD APR 25
PY 2013
VL 117
IS 16
SI SI
BP 4705
EP 4712
DI 10.1021/jp3086705
PG 8
WC Chemistry, Physical
SC Chemistry
GA 134LL
UT WOS:000318211600065
PM 23153315
ER

PT J
AU Assary, RS
   Lau, KC
   Amine, K
   Sun, YK
   Curtiss, LA
AF Assary, Rajeev S.
   Lau, Kah Chun
   Amine, Khalil
   Sun, Yang-Kook
   Curtiss, Larry A.
TI Interactions of Dimethoxy Ethane with Li2O2 Clusters and Likely
   Decomposition Mechanisms for Li-O-2 Batteries
SO JOURNAL OF PHYSICAL CHEMISTRY C
LA English
DT Article
ID LITHIUM-AIR BATTERIES; ETHER-BASED ELECTROLYTES; CARBONATE ELECTROLYTES;
   OXYGEN BATTERY; SUPEROXIDE; PRODUCTS; PERSPECTIVE; CHALLENGES;
   REACTIVITY; STABILITY
AB One of the major problems facing the successful development of Li-O-2 batteries is the decomposition of nonaqueous electrolytes, where the decomposition can be chemical or electrochemical during discharge or charge. In this paper, the decomposition pathways of dimethoxy ethane (DME) by the chemical reaction with the major discharge product; Li2O2, are investigated using theoretical methods. The computations were carried out using small Li2O2 clusters as models for potential sites on Li2O2 surfaces Both hydrogen and proton abstraction mechanisms were considered. The computations suggest that the most favorable decomposition of ether solvents occurs on certain sites on the lithium peroxide surfaces involving hydrogen abstraction followed by reaction with oxygen, which leads to oxidized species such as aldehydes and carboxylates as well as LiOH on the surface of the lithium peroxide. The most favorable site is a Li-O-Li site that may be present on small nanoparticles or as a defect site on a surface. The decomposition route initiated by the proton abstraction from the secondary position of DME by the singlet cluster (O-O site) requires a much larger enthalpy of activation, and subsequent reactions may require the presence of oxygen or superoxide. Thus, pathways involving proton abstraction are less likely than that involving hydrogen abstraction. This type of electrolyte decomposition (electrolyte with hydrogen atoms) may influence the cell performance including the crystal growth, nanomorphologies of the discharge products, and charge overpotential.
C1 [Assary, Rajeev S.; Lau, Kah Chun; Curtiss, Larry A.] Argonne Natl Labs, Div Mat Sci, Argonne, IL 60439 USA.
   [Amine, Khalil] Argonne Natl Labs, Chem Sci & Engn Div, Argonne, IL 60439 USA.
   [Sun, Yang-Kook] Hanyang Univ, Dept Energy Engn, Seoul 133791, South Korea.
   [Curtiss, Larry A.] Argonne Natl Labs, Ctr Nanoscale Mat, Argonne, IL 60439 USA.
RP Assary, RS (reprint author), Argonne Natl Labs, Div Mat Sci, Argonne, IL 60439 USA.
EM assary@anl.gov; curtiss@anl.gov
RI Lau, Kah Chun/A-9348-2013; Amine, Khalil/K-9344-2013; Surendran Assary,
   Rajeev/E-6833-2012
OI Lau, Kah Chun/0000-0002-4925-3397; Surendran Assary,
   Rajeev/0000-0002-9571-3307
FU U.S. Department of Energy Office of Basic Energy Science-Division of
   Materials Science and Engineering [DE-AC02-06CH11357]; Human Resources
   Development of the Korea Institute of Energy Technology Evaluation of
   Planning (KETEP); Korea government of Ministry of Knowledge Economy
   [20114010203150]; U.S. Department of Energy, Office of Science, Office
   of Basic Energy Sciences [DE-AC02-06CH11357]; EMSL, a national
   scientific user facility located at the Pacific Northwest National
   Laboratory
FX This work was supported by the U.S. Department of Energy Office of Basic
   Energy Science-Division of Materials Science and Engineering under
   contract DE-AC02-06CH11357. This work was also supported by the Human
   Resources Development of the Korea Institute of Energy Technology
   Evaluation of Planning (KETEP) grant funded by the Korea government of
   Ministry of Knowledge Economy (No. 20114010203150). We gratefully
   acknowledge the computing resources provided on "Fusion," a 320-node
   computing cluster operated by the Laboratory Computing Resource Center
   at Argonne National Laboratory. Use of the Center for Nanoscale
   Materials was supported by the U.S. Department of Energy, Office of
   Science, Office of Basic Energy Sciences, under Contract No.
   DE-AC02-06CH11357. We also acknowledge grants of computer time from
   EMSL, a national scientific user facility located at the Pacific
   Northwest National Laboratory.
NR 39
TC 36
Z9 37
U1 7
U2 115
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1932-7447
J9 J PHYS CHEM C
JI J. Phys. Chem. C
PD APR 25
PY 2013
VL 117
IS 16
BP 8041
EP 8049
DI 10.1021/jp400229n
PG 9
WC Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science,
   Multidisciplinary
SC Chemistry; Science & Technology - Other Topics; Materials Science
GA 134LH
UT WOS:000318211200012
ER

PT J
AU Tse, YLS
   Herring, AM
   Kim, K
   Voth, GA
AF Tse, Ying-Lung Steve
   Herring, Andrew M.
   Kim, Kwiseon
   Voth, Gregory A.
TI Molecular Dynamics Simulations of Proton Transport in 3M and Nafion
   Perfluorosulfonic Acid Membranes
SO JOURNAL OF PHYSICAL CHEMISTRY C
LA English
DT Article
ID VALENCE-BOND MODEL; EXCHANGE MEMBRANES; FUEL-CELLS; HYDRATED NAFION;
   SULFONIC-ACID; WATER; SOLVATION; DIFFUSION; MORPHOLOGY
AB Proton transfer and local structures in 3M (EW 825) and Nafion (EW 890) membranes are investigated in this study by both standard nonreactive molecular dynamics and the self-consistent iterative multistate empirical valence bond method, which is capable of simulating multiple reactive protons and accounting for the Grotthuss mechanism of proton transport. The Nafion and 3M systems have the same backbone, so we can isolate and compare the effect of the different side chains by calculating the radial distribution functions (RDFs), self-diffusion constants, and other properties for three hydration levels at 5, 9, and 14 at 300 and 353 K. The conformations of the 3M and Nafion side chains are also compared. We found that even though many results are similar for both F3C and SPC/Fw water models, certain trends such as the sulfonate clustering can depend on the water model selected. The relationship between the different RDFs for the sulfonate, water, and hydronium is discussed. The self-diffusion constants of water for both membranes are found to be close with respect to each water model selected, even though the experimental values for 3M at 300 K are higher. The calculated self-diffusion constants of the excess protons are found to be higher for 3M than Nafion for hydration levels 9 and 14 at 300 K but statistically the same at 353 K.
C1 [Tse, Ying-Lung Steve; Herring, Andrew M.] Colorado Sch Mines, Renewable Energy Mat Res Sci & Engn Ctr, Golden, CO 80401 USA.
   [Herring, Andrew M.] Colorado Sch Mines, Dept Chem & Biol Engn, Golden, CO 80401 USA.
   [Kim, Kwiseon] Computat Sci Ctr, Natl Renewable Energy Lab, Golden, CO 80401 USA.
   [Tse, Ying-Lung Steve; Voth, Gregory A.] Univ Chicago, James Franck Inst, Dept Chem, Chicago, IL 60637 USA.
   [Tse, Ying-Lung Steve; Voth, Gregory A.] Univ Chicago, Computat Inst, Chicago, IL 60637 USA.
RP Voth, GA (reprint author), Univ Chicago, James Franck Inst, Dept Chem, Chicago, IL 60637 USA.
EM gavoth@uchicago.edu
OI Herring, Andrew/0000-0001-7318-5999
FU Department of Energy, Office of Basic Energy Sciences, Division of
   Chemical Sciences, Geosciences, and Biosciences (DOE)
   [DE-FG02-10ER16171]; Renewable Energy Materials Research Science and
   Engineering Center (National Science Foundation) at Colorado School of
   Mines [DMR-0820518]; National Renewable Energy Laboratory (NREL)
FX This research was supported by the Department of Energy, Office of Basic
   Energy Sciences, Division of Chemical Sciences, Geosciences, and
   Biosciences (DOE grant DE-FG02-10ER16171 to G.A.V.), Renewable Energy
   Materials Research Science and Engineering Center (National Science
   Foundation grant DMR-0820518 to A.M.H.) at Colorado School of Mines, and
   the National Renewable Energy Laboratory (NREL). S.T. thanks Dr. Bryan
   Pivovar of NREL for very many helpful discussions.
NR 49
TC 30
Z9 30
U1 1
U2 55
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1932-7447
J9 J PHYS CHEM C
JI J. Phys. Chem. C
PD APR 25
PY 2013
VL 117
IS 16
BP 8079
EP 8091
DI 10.1021/jp400693g
PG 13
WC Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science,
   Multidisciplinary
SC Chemistry; Science & Technology - Other Topics; Materials Science
GA 134LH
UT WOS:000318211200016
ER

PT J
AU Carrasco, J
   Barrio, L
   Liu, P
   Rodriguez, JA
   Ganduglia-Pirovano, MV
AF Carrasco, Javier
   Barrio, Laura
   Liu, Ping
   Rodriguez, Jose A.
   Veronica Ganduglia-Pirovano, M.
TI Theoretical Studies of the Adsorption of CO and C on Ni(111) and
   Ni/CeO2(111): Evidence of a Strong Metal-Support Interaction
SO JOURNAL OF PHYSICAL CHEMISTRY C
LA English
DT Article
ID WATER-GAS-SHIFT; GENERALIZED GRADIENT APPROXIMATION; SURFACES; CERIA;
   CATALYSTS; OXIDATION; NICKEL; OXIDE; NI; PLATINUM
AB The catalytic CO methanation reaction on Ni/CeO2(111) systems is known to depend on Ni coverage: at medium and large coverages, Ni/CeO2(111) surfaces are able to catalyze methane production, whereas at small coverage they become efficient catalysts for the water gas shift reaction. Electronic structure, geometries, and the adsorption of C and CO on small Ni (n = 1 and 4) particles deposited on CeO2(111) have been studied using density functional theory (DFT) with the DFT+U approach and compared with Ni(111) and CeO2(111). The most stable Ni-4 cluster has a pyramidal structure (pyr-Ni-4), and a planar rhombohedral structure (r-Ni-4) is less stable by similar to 0.2 eV. Metallic Ni particles are partially oxidized (Ni2+/Ni1+) upon deposition on the ceria support, which is partially reduced. C species are strongly bound on Ni(111), whereas on Ni/CeO2(111), and on the bare support, oxidative adsorption (C + CeO2 + CO + CeO2,) is mostly preferred, opening a Mars van Krevelen mechanism to prevent coke formation. The exothermicity of nonoxidative adsorption of C on nickel sites follows the trend: Ni-1/CeO2(111) < pyr-Ni-4/CeO2(111) < Ni(111). On these systems, CO adsorption is nonmddative. The C-O bond strength follows the inverse trend of the nonoxidative adsorption of C:Ni(111) < pyr-Ni-4/CeO2(111) < Ni-1/CeO2(111). The stronger C-O bond found for the CO/Ni-1/CeO2(111) system compared with CO/Ni(111) provides an explanation of the Ni coverage dependence reported for the CO methanation reaction on Ni/CeO2(111) catalysts. The strong electronic perturbations in the Ni-1 adatoms produce a drastic change in their chemical properties.
C1 [Carrasco, Javier; Barrio, Laura; Veronica Ganduglia-Pirovano, M.] CSIC, Inst Catalisis & Petroleoquim, E-28049 Madrid, Spain.
   [Barrio, Laura; Liu, Ping; Rodriguez, Jose A.] Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA.
RP Ganduglia-Pirovano, MV (reprint author), CSIC, Inst Catalisis & Petroleoquim, C Marie Curie 2, E-28049 Madrid, Spain.
EM vgp@icp.csic.es
RI Barrio, Laura/A-9509-2008; Carrasco, Javier/I-5488-2015; COST,
   CM1104/I-8057-2015; 
OI Barrio, Laura/0000-0003-3496-4329; Carrasco, Javier/0000-0003-3117-6933;
   Barrio, Laura/0000-0002-6919-6414
FU EU [RI-283493]; MINECO; Marie Curie Career Integration
   [FP7-PEOPLE-2011-CIG]; JAE-DOC; U.S. Department of Energy, Division of
   Chemical Sciences [DE-AC02-98CH10886]; COST action [CM1104]; 
   [MINECO-PIM2010EEUU-00138]
FX We thank EULANEST (MINECO-PIM2010EEUU-00138) for financial support.
   Computer time provided by the SGAI-CSIC and the RES at CESGA and BSC is
   acknowledged. This work was granted access to the HPC resources of the
   RZG made available within the Distributed European Computing Initiative
   by the PRACE-21P, receiving funding from the EU's FP7 Programme under
   grant agreement no. RI-283493. J.C. is supported by the MINECO through a
   Ramon y Cajal Fellowship and acknowledges support by the Marie Curie
   Career Integration Grant FP7-PEOPLE-2011-CIG: Project NanoWGS. L. B.
   acknowledges support by the JAE-DOC-2010 program. P.L. and JAR thank the
   U.S. Department of Energy, Division of Chemical Sciences for support
   under contract DE-AC02-98CH10886. The COST action CM1104 is gratefully
   acknowledged.
NR 56
TC 36
Z9 36
U1 17
U2 202
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1932-7447
J9 J PHYS CHEM C
JI J. Phys. Chem. C
PD APR 25
PY 2013
VL 117
IS 16
BP 8241
EP 8250
DI 10.1021/jp400430r
PG 10
WC Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science,
   Multidisciplinary
SC Chemistry; Science & Technology - Other Topics; Materials Science
GA 134LH
UT WOS:000318211200035
ER

PT J
AU Zhu, P
   Sumpter, BG
   Meunier, V
AF Zhu, Pan
   Sumpter, Bobby G.
   Meunier, Vincent
TI Electronic, Thermal, and Structural Properties of Graphene Oxide
   Frameworks
SO JOURNAL OF PHYSICAL CHEMISTRY C
LA English
DT Article
ID COVALENT ORGANIC FRAMEWORKS; AB-INITIO; FILMS; PSEUDOPOTENTIALS; SIZE
AB We report a theoretical study of the electronic, thermal, and structural properties of a series of graphene oxide frameworks (GOFs) using first-principles calculations based on density functional theory. The molecular structure of GOFs is systematically studied by varying the nature and concentration of linear boronic acid pillars, and the thermal stability is assessed using ab initio molecular dynamics. The results demonstrate that GOFs are thermally stable up to 550 K and that electronic properties, such as their band gap, can be modified controllably by an appropriate choice of pillaring unit and pillar concentration. The tunability of the electronic structure using nonchemical means, e.g., mechanical strain, is also quantified. Overall, this class of materials is predicted to offer highly tunable materials electronic properties ranging from metallic to semiconducting.
C1 [Zhu, Pan; Meunier, Vincent] Rensselaer Polytech Inst, Dept Phys Appl Phys & Astron, Troy, NY 12180 USA.
   [Sumpter, Bobby G.] Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Oak Ridge, TN 37831 USA.
   [Sumpter, Bobby G.] Oak Ridge Natl Lab, Comp Sci & Math Div, Oak Ridge, TN 37831 USA.
   [Meunier, Vincent] Rensselaer Polytech Inst, Dept Mat Sci & Engn, Troy, NY 12180 USA.
RP Meunier, V (reprint author), Rensselaer Polytech Inst, Dept Phys Appl Phys & Astron, Troy, NY 12180 USA.
EM meuniv@rpi.edu
RI Meunier, Vincent/F-9391-2010; Sumpter, Bobby/C-9459-2013
OI Meunier, Vincent/0000-0002-7013-179X; Sumpter, Bobby/0000-0001-6341-0355
FU New York State under NYSTAR [C080117]; Center for Nanophase Materials
   Sciences (CNMS) at Oak Ridge National Laboratory by the Division of
   Scientific User Facilities, U.S. Department of Energy; Division of
   Scientific User Facilities, U.S. Department of Energy
FX This work was supported by New York State under NYSTAR Contract No.
   C080117. V.M. and B.G.S. also acknowledge support from the Center for
   Nanophase Materials Sciences (CNMS), sponsored at Oak Ridge National
   Laboratory by the Division of Scientific User Facilities, U.S.
   Department of Energy.
NR 28
TC 8
Z9 8
U1 5
U2 94
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1932-7447
J9 J PHYS CHEM C
JI J. Phys. Chem. C
PD APR 25
PY 2013
VL 117
IS 16
BP 8276
EP 8281
DI 10.1021/jp401072z
PG 6
WC Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science,
   Multidisciplinary
SC Chemistry; Science & Technology - Other Topics; Materials Science
GA 134LH
UT WOS:000318211200039
ER

PT J
AU Mentovich, ED
   Rosenberg-Shraga, N
   Kalifa, I
   Gozin, M
   Mujica, V
   Hansen, T
   Richter, S
AF Mentovich, Elad D.
   Rosenberg-Shraga, Natalie
   Kalifa, Itsik
   Gozin, Michael
   Mujica, Vladimiro
   Hansen, Thorsten
   Richter, Shachar
TI Gated-Controlled Rectification of a Self-Assembled Monolayer-Based
   Transistor
SO JOURNAL OF PHYSICAL CHEMISTRY C
LA English
DT Article
ID NEGATIVE-DIFFERENTIAL-RESISTANCE; CURRENT-VOLTAGE CHARACTERISTICS;
   MOLECULAR-TRANSPORT JUNCTIONS; ELECTRON-TRANSPORT; TUNNELING JUNCTIONS;
   CHARGE-TRANSPORT; COULOMB-BLOCKADE; WIRE JUNCTIONS; CONDUCTANCE;
   FABRICATION
AB A vertical gate symmetrical molecular transistor is demonstrated. It includes self assembled monolayer of ferrocene molecules chemically bonded to be a flat Au source and Au nanoparticles drain electrodes while gated with the central gate electrode. Using this configuration, we show that negative differential resistance, symmetrical behavior, and rectification effects can be tuned by controlling the gate voltage. The I-V curves shift from symmetric to strongly rectifying over a gate voltage range of a few tenths of volts around a threshold value where the junction behaves symmetrically. This is due to charging of the nanoparticle contact, which modifies the spatial profile of the voltage across the junction, a fact that we have included in a simple theoretical model that explains our experimental results quite well. Our device design affords a new way to fine-tune the rectification of molecular devices in a way that does not necessarily involve the Coulomb charging of the wire.
C1 [Mentovich, Elad D.; Rosenberg-Shraga, Natalie; Gozin, Michael; Richter, Shachar] Tel Aviv Univ, Sch Chem, IL-69978 Tel Aviv, Israel.
   [Mentovich, Elad D.; Kalifa, Itsik; Richter, Shachar] Tel Aviv Univ, Univ Ctr Nanosci & Nanotechnol, IL-69978 Tel Aviv, Israel.
   [Mujica, Vladimiro] Arizona State Univ, Dept Chem & Biochem, Tempe, AZ 85287 USA.
   [Mujica, Vladimiro] Northwestern Univ, Dept Chem, Evanston, IL 60208 USA.
   [Mujica, Vladimiro] Argonne Natl Lab, Ctr Nanoscale Mat, Argonne, IL 60439 USA.
   [Hansen, Thorsten] Lund Univ, Dept Chem Phys, SE-21000 Lund, Sweden.
RP Richter, S (reprint author), Tel Aviv Univ, Sch Chem, IL-69978 Tel Aviv, Israel.
EM srichter@post.tau.ac.il
RI Hansen, Thorsten/E-7600-2015; 
OI Hansen, Thorsten/0000-0003-1813-5125; Gozin, Michael/0000-0003-0897-1760
FU USAF [073003]; James Frank, and Israel Science Foundation
FX The authors thank Dr. Joseph E. Subotnik and Professor Mark A. Ratner
   for fruitful discussions and Mrs Netta Hendler and Bogdan Belgorodsky
   for technical support. This work was partly supported by USAF (project
   No. 073003), James Frank, and Israel Science Foundation (SR).
NR 55
TC 17
Z9 17
U1 1
U2 49
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1932-7447
J9 J PHYS CHEM C
JI J. Phys. Chem. C
PD APR 25
PY 2013
VL 117
IS 16
BP 8468
EP 8474
DI 10.1021/jp311875g
PG 7
WC Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science,
   Multidisciplinary
SC Chemistry; Science & Technology - Other Topics; Materials Science
GA 134LH
UT WOS:000318211200061
ER

PT J
AU Chakraborty, D
   van Leeuwen, E
   Pelton, M
   Sader, JE
AF Chakraborty, Debadi
   van Leeuwen, Emma
   Pelton, Matthew
   Sader, John E.
TI Vibration of Nanoparticles in Viscous Fluids
SO JOURNAL OF PHYSICAL CHEMISTRY C
LA English
DT Article
ID ATOMIC-FORCE MICROSCOPE; SINGLE GOLD NANORODS; METAL NANOPARTICLES;
   COHERENT EXCITATION; ACOUSTIC VIBRATIONS; TRANSIENT ABSORPTION;
   FREQUENCY-RESPONSE; SILVER NANOCUBES; RAMAN-SCATTERING; RESONATORS
AB The dynamics of mechanical structures can be strongly affected by the fluid in which they are immersed. Ultrafast laser spectroscopy has recently provided fundamental insight into this fluid-structure interaction for nanoparticles immersed in a range of viscous fluids. In this article, we present results of a rigorous finite-element analysis and commensurate scaling theory that enable interpretation and analysis of these experiments, for the extensional vibrational modes of axisymmetric nanoparticles immersed in viscous fluids. Right circular, conical, and bipyramidal axisymmetric cylinder geometries are considered. We also develop an approximate analytical model that accounts for finite viscous penetration depth, which displays excellent agreement with finite-element results for particles of large aspect ratio. The finite-element results agree well with available measurements for particles in low viscosity fluids such as water, but significant discrepancies exist at higher viscosities. Possible mechanisms for these differences are discussed.
C1 [Chakraborty, Debadi; van Leeuwen, Emma; Sader, John E.] Univ Melbourne, Dept Math & Stat, Melbourne, Vic 3010, Australia.
   [Pelton, Matthew] Argonne Natl Lab, Ctr Nanoscale Mat, Argonne, IL 60439 USA.
   [Sader, John E.] CALTECH, Kavli Nanosci Inst, Pasadena, CA 91125 USA.
   [Sader, John E.] CALTECH, Dept Phys, Pasadena, CA 91125 USA.
RP Sader, JE (reprint author), Univ Melbourne, Dept Math & Stat, Melbourne, Vic 3010, Australia.
EM jsader@unimelb.edu.au
RI Pelton, Matthew/H-7482-2013
OI Pelton, Matthew/0000-0002-6370-8765
FU Australian Research Council Grants Scheme; U.S. Department of Energy,
   Office of Science, Office of Basic Energy Sciences User Facility
   [DE-AC02-06CH11357]
FX This research was supported by the Australian Research Council Grants
   Scheme. This work was performed, in part, at the Center for Nanoscale
   Materials, a U.S. Department of Energy, Office of Science, Office of
   Basic Energy Sciences User Facility under Contract No.
   DE-AC02-06CH11357.
NR 54
TC 10
Z9 10
U1 1
U2 39
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1932-7447
J9 J PHYS CHEM C
JI J. Phys. Chem. C
PD APR 25
PY 2013
VL 117
IS 16
BP 8536
EP 8544
DI 10.1021/jp401141b
PG 9
WC Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science,
   Multidisciplinary
SC Chemistry; Science & Technology - Other Topics; Materials Science
GA 134LH
UT WOS:000318211200070
ER

PT J
AU Liao, HX
   Lynch, R
   Zhou, TQ
   Gao, F
   Alam, SM
   Boyd, SD
   Fire, AZ
   Roskin, KM
   Schramm, CA
   Zhang, ZH
   Zhu, J
   Shapiro, L
   Mullikin, JC
   Gnanakaran, S
   Hraber, P
   Wiehe, K
   Kelsoe, G
   Yang, G
   Xia, SM
   Montefiori, DC
   Parks, R
   Lloyd, KE
   Scearce, RM
   Soderberg, KA
   Cohen, M
   Kamanga, G
   Louder, MK
   Tran, LM
   Chen, Y
   Cai, FP
   Chen, SR
   Moquin, S
   Du, XL
   Joyce, MG
   Srivatsan, S
   Zhang, BS
   Zheng, AQ
   Shaw, GM
   Hahn, BH
   Kepler, TB
   Korber, BTM
   Kwong, PD
   Mascola, JR
   Haynes, BF
AF Liao, Hua-Xin
   Lynch, Rebecca
   Zhou, Tongqing
   Gao, Feng
   Alam, S. Munir
   Boyd, Scott D.
   Fire, Andrew Z.
   Roskin, Krishna M.
   Schramm, Chaim A.
   Zhang, Zhenhai
   Zhu, Jiang
   Shapiro, Lawrence
   Mullikin, James C.
   Gnanakaran, S.
   Hraber, Peter
   Wiehe, Kevin
   Kelsoe, Garnett
   Yang, Guang
   Xia, Shi-Mao
   Montefiori, David C.
   Parks, Robert
   Lloyd, Krissey E.
   Scearce, Richard M.
   Soderberg, Kelly A.
   Cohen, Myron
   Kamanga, Gift
   Louder, Mark K.
   Tran, Lillian M.
   Chen, Yue
   Cai, Fangping
   Chen, Sheri
   Moquin, Stephanie
   Du, Xiulian
   Joyce, M. Gordon
   Srivatsan, Sanjay
   Zhang, Baoshan
   Zheng, Anqi
   Shaw, George M.
   Hahn, Beatrice H.
   Kepler, Thomas B.
   Korber, Bette T. M.
   Kwong, Peter D.
   Mascola, John R.
   Haynes, Barton F.
CA NISC Comparative Sequencing Progra
TI Co-evolution of a broadly neutralizing HIV-1 antibody and founder virus
SO NATURE
LA English
DT Article
ID B-CELL RESPONSES; HUMAN MONOCLONAL-ANTIBODIES; IN-SITU PROTEOLYSIS; CD4
   BINDING-SITE; HIV-1-INFECTED INDIVIDUALS; CONFORMATIONAL EPITOPE; POTENT
   NEUTRALIZATION; ENVELOPE GLYCOPROTEIN; VACCINE DESIGN; SUBTYPE-B
AB Current human immunodeficiency virus-1 (HIV-1) vaccines elicit strain-specific neutralizing antibodies. However, cross-reactive neutralizing antibodies arise in approximately 20% of HIV-1-infected individuals, and details of their generation could provide a blueprint for effective vaccination. Here we report the isolation, evolution and structure of a broadly neutralizing antibody from an African donor followed from the time of infection. The mature antibody, CH103, neutralized approximately 55% of HIV-1 isolates, and its co-crystal structure with the HIV-1 envelope protein gp120 revealed a new loop-based mechanism of CD4-binding-site recognition. Virus and antibody gene sequencing revealed concomitant virus evolution and antibody maturation. Notably, the unmutated common ancestor of the CH103 lineage avidly bound the transmitted/founder HIV-1 envelope glycoprotein, and evolution of antibody neutralization breadth was preceded by extensive viral diversification in and near the CH103 epitope. These data determine the viral and antibody evolution leading to induction of a lineage of HIV-1 broadly neutralizing antibodies, and provide insights into strategies to elicit similar antibodies by vaccination.
C1 [Liao, Hua-Xin; Gao, Feng; Alam, S. Munir; Wiehe, Kevin; Kelsoe, Garnett; Yang, Guang; Xia, Shi-Mao; Montefiori, David C.; Parks, Robert; Lloyd, Krissey E.; Scearce, Richard M.; Soderberg, Kelly A.; Chen, Yue; Cai, Fangping; Chen, Sheri; Haynes, Barton F.] Duke Univ, Sch Med, Dept Med, Human Vaccine Inst, Durham, NC 27710 USA.
   [Liao, Hua-Xin; Gao, Feng; Alam, S. Munir; Wiehe, Kevin; Kelsoe, Garnett; Yang, Guang; Xia, Shi-Mao; Montefiori, David C.; Parks, Robert; Lloyd, Krissey E.; Scearce, Richard M.; Soderberg, Kelly A.; Chen, Yue; Cai, Fangping; Chen, Sheri; Haynes, Barton F.] Duke Univ, Sch Med, Dept Immunol, Human Vaccine Inst, Durham, NC 27710 USA.
   [Liao, Hua-Xin; Gao, Feng; Alam, S. Munir; Wiehe, Kevin; Kelsoe, Garnett; Yang, Guang; Xia, Shi-Mao; Montefiori, David C.; Parks, Robert; Lloyd, Krissey E.; Scearce, Richard M.; Soderberg, Kelly A.; Chen, Yue; Cai, Fangping; Chen, Sheri; Haynes, Barton F.] Duke Ctr HIV AIDS Vaccine Immunol & Immunogen Dis, Durham, NC 27710 USA.
   [Lynch, Rebecca; Zhou, Tongqing; Zhu, Jiang; Shapiro, Lawrence; Louder, Mark K.; Tran, Lillian M.; Moquin, Stephanie; Du, Xiulian; Joyce, M. Gordon; Srivatsan, Sanjay; Zhang, Baoshan; Zheng, Anqi; Kwong, Peter D.; Mascola, John R.] NIAID, Vaccine Res Ctr, NIH, Bethesda, MD 20892 USA.
   [Boyd, Scott D.; Fire, Andrew Z.; Roskin, Krishna M.] Stanford Univ, Dept Pathol, Palo Alto, CA 94305 USA.
   [Schramm, Chaim A.; Zhang, Zhenhai; Shapiro, Lawrence] Columbia Univ, Dept Biochem & Mol Biophys, New York, NY 10032 USA.
   [Mullikin, James C.] NIH, NISC Comparat Sequencing Program, Bethesda, MD 20892 USA.
   [Mullikin, James C.] NHGRI, NIH Intramural Sequencing Ctr, NIH, Bethesda, MD 20892 USA.
   [Gnanakaran, S.; Hraber, Peter; Korber, Bette T. M.] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87544 USA.
   [Cohen, Myron] Univ N Carolina, Dept Med, Chapel Hill, NC 27599 USA.
   [Cohen, Myron] Univ N Carolina, Dept Epidemiol, Chapel Hill, NC 27599 USA.
   [Cohen, Myron] Univ N Carolina, Dept Microbiol & Immunol, Chapel Hill, NC 27599 USA.
   [Kamanga, Gift] Univ North Carolina Project, Kamuzu Cent Hosp, Lilongwe, Malawi.
   [Shaw, George M.; Hahn, Beatrice H.] Univ Penn, Perelman Sch Med, Dept Med, Philadelphia, PA 19104 USA.
   [Shaw, George M.; Hahn, Beatrice H.] Univ Penn, Perelman Sch Med, Dept Microbiol, Philadelphia, PA 19104 USA.
   [Kepler, Thomas B.] Boston Univ, Dept Microbiol, Boston, MA 02215 USA.
RP Liao, HX (reprint author), Duke Univ, Sch Med, Dept Med, Human Vaccine Inst, Durham, NC 27710 USA.
EM hliao@duke.edu; barton.haynes@duke.edu
RI Zhou, Tongqing/A-6880-2010; 
OI Zhou, Tongqing/0000-0002-3935-4637; Kepler, Thomas/0000-0002-1383-6865;
   Gnanakaran, S/0000-0002-9368-3044; Korber, Bette/0000-0002-2026-5757;
   Hraber, Peter/0000-0002-2920-4897
FU National Institutes of Allergy and Infectious Diseases (NIAID);
   intramural National Institutes of Health (NIH); NIH, NIAID [AI067854,
   AI100645]; US Department of Energy, Basic Energy Sciences, Office of
   Science [W-31-109-Eng-38]
FX This study was supported by the National Institutes of Allergy and
   Infectious Diseases (NIAID) and by intramural National Institutes of
   Health (NIH) support for the NIAID Vaccine Research Center, by grants
   from the NIH, NIAID, AI067854 (the Center for HIV/AIDS Vaccine
   Immunology) and AI100645 (the Center for Vaccine Immunology-Immunogen
   Discovery). The authors thank J. Pritchett, H. Chen, D. Pause, M.
   Cooper, E. Solomon, J. Blinn, K. Yarborough, E. Friberg, M. Smith, A.
   Hogan, C. Peckels, A. Foulger and T. Jeffries for technical assistance,
   and J. Kircherr and C. Andrews for project management. Use of sector 22
   (Southeast Region Collaborative Access team) at the Advanced Photon
   Source was supported by the US Department of Energy, Basic Energy
   Sciences, Office of Science, under contract number W-31-109-Eng-38. The
   opinions herein are those of the authors and should not be construed as
   official or representing the views of the US Department of Health and
   Human Services, National Institute for Allergy and Infectious Diseases.
NR 71
TC 350
Z9 357
U1 10
U2 133
PU NATURE PUBLISHING GROUP
PI LONDON
PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND
SN 0028-0836
J9 NATURE
JI Nature
PD APR 25
PY 2013
VL 496
IS 7446
BP 469
EP +
DI 10.1038/nature12053
PG 11
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA 131HU
UT WOS:000317984400034
PM 23552890
ER

PT J
AU Rambo, RP
   Tainer, JA
AF Rambo, Robert P.
   Tainer, John A.
TI Accurate assessment of mass, models and resolution by small-angle
   scattering
SO NATURE
LA English
DT Article
ID X-RAY-SCATTERING; BIOLOGICAL MACROMOLECULES; STRUCTURAL-ANALYSES; SAXS;
   RNA; CRYSTALLOGRAPHY; COMPUTATION; PROTEINS; QUALITY; SCALE
AB Modern small-angle scattering (SAS) experiments with X-rays or neutrons provide a comprehensive, resolution-limited observation of the thermodynamic state. However, methods for evaluating mass and validating SAS-based models and resolution have been inadequate. Here we define the volume of correlation, V-c, a SAS invariant derived from the scattered intensities that is specific to the structural state of the particle, but independent of concentration and the requirements of a compact, folded particle. We show that V-c defines a ratio, Q(R), that determines the molecular mass of proteins or RNA ranging from 10 to 1,000 kilodaltons. Furthermore, we propose a statistically robust method for assessing model-data agreements (chi(2)(free)) akin to cross-validation. Our approach prevents over-fitting of the SAS data and can be used with a newly defined metric, R-SAS, for quantitative evaluation of resolution. Together, these metrics (V-c, Q(R), chi(2)(free) and R-SAS) provide analytical tools for unbiased and accurate macromolecular structural characterizations in solution.
C1 [Rambo, Robert P.; Tainer, John A.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Adv Light Source, Div Life Sci, Berkeley, CA 94720 USA.
   [Tainer, John A.] Scripps Res Inst, Skaggs Inst Chem Biol, Dept Integrat Struct & Computat Biol, La Jolla, CA 92037 USA.
RP Rambo, RP (reprint author), Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Adv Light Source, Div Life Sci, Berkeley, CA 94720 USA.
EM rprambo@lbl.gov; jat@scripps.edu
FU Office of Science, US Department of Energy on Novel Technology for
   Structural Biology; United States Department of Energy program
   Integrated Diffraction Analysis Technologies [DEAC02-05CH11231];
   National Institutes of Health [R01GM105404]
FX We thank G. L. Hura, M. Hammel, R. T. Batey, J. Tanamachi and the staff
   of SIBYLS Beamline 12.3.1 at the Advanced Light Source for discussions
   and P. Adams for suggestions regarding simulations with CNS. We thank E.
   Rambo, G. Williams and E. D. Getzoff for manuscript comments. This work
   is supported in part by funding to foster collaboration with Bruker and
   the Berkeley Laboratory Directed Research and Development (LDRD) program
   provided by the Director, Office of Science, US Department of Energy on
   Novel Technology for Structural Biology. The SIBYLS Beamline 12.3.1
   facility and team at the Advanced Light Source is supported by United
   States Department of Energy program Integrated Diffraction Analysis
   Technologies (DEAC02-05CH11231) and by National Institutes of Health
   grant R01GM105404.
NR 32
TC 168
Z9 168
U1 9
U2 111
PU NATURE PUBLISHING GROUP
PI LONDON
PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND
SN 0028-0836
J9 NATURE
JI Nature
PD APR 25
PY 2013
VL 496
IS 7446
BP 477
EP +
DI 10.1038/nature12070
PG 6
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA 131HU
UT WOS:000317984400035
PM 23619693
ER

PT J
AU Paddon, CJ
   Westfall, PJ
   Pitera, DJ
   Benjamin, K
   Fisher, K
   McPhee, D
   Leavell, MD
   Tai, A
   Main, A
   Eng, D
   Polichuk, DR
   Teoh, KH
   Reed, DW
   Treynor, T
   Lenihan, J
   Fleck, M
   Bajad, S
   Dang, G
   Dengrove, D
   Diola, D
   Dorin, G
   Ellens, KW
   Fickes, S
   Galazzo, J
   Gaucher, SP
   Geistlinger, T
   Henry, R
   Hepp, M
   Horning, T
   Iqbal, T
   Jiang, H
   Kizer, L
   Lieu, B
   Melis, D
   Moss, N
   Regentin, R
   Secrest, S
   Tsuruta, H
   Vazquez, R
   Westblade, LF
   Xu, L
   Yu, M
   Zhang, Y
   Zhao, L
   Lievense, J
   Covello, PS
   Keasling, JD
   Reiling, KK
   Renninger, NS
   Newman, JD
AF Paddon, C. J.
   Westfall, P. J.
   Pitera, D. J.
   Benjamin, K.
   Fisher, K.
   McPhee, D.
   Leavell, M. D.
   Tai, A.
   Main, A.
   Eng, D.
   Polichuk, D. R.
   Teoh, K. H.
   Reed, D. W.
   Treynor, T.
   Lenihan, J.
   Fleck, M.
   Bajad, S.
   Dang, G.
   Dengrove, D.
   Diola, D.
   Dorin, G.
   Ellens, K. W.
   Fickes, S.
   Galazzo, J.
   Gaucher, S. P.
   Geistlinger, T.
   Henry, R.
   Hepp, M.
   Horning, T.
   Iqbal, T.
   Jiang, H.
   Kizer, L.
   Lieu, B.
   Melis, D.
   Moss, N.
   Regentin, R.
   Secrest, S.
   Tsuruta, H.
   Vazquez, R.
   Westblade, L. F.
   Xu, L.
   Yu, M.
   Zhang, Y.
   Zhao, L.
   Lievense, J.
   Covello, P. S.
   Keasling, J. D.
   Reiling, K. K.
   Renninger, N. S.
   Newman, J. D.
TI High-level semi-synthetic production of the potent antimalarial
   artemisinin
SO NATURE
LA English
DT Article
ID SACCHAROMYCES-CEREVISIAE; DIHYDROARTEMISINIC ACID; MOLECULAR-CLONING;
   DRUG ARTEMISININ; GENE DISRUPTION; CYTOCHROME B(5); BIOSYNTHESIS; ANNUA;
   REDUCTASE; YEAST
AB In 2010 there were more than 200 million cases of malaria, and at least 655,000 deaths(1). The World Health Organization has recommended artemisinin-based combination therapies (ACTs) for the treatment of uncomplicated malaria caused by the parasite Plasmodium falciparum. Artemisinin is a sesquiterpene endoperoxide with potent antimalarial properties, produced by the plant Artemisia annua. However, the supply of plant-derived artemisinin is unstable, resulting in shortages and price fluctuations, complicating production planning by ACT manufacturers(2). A stable source of affordable artemisinin is required. Here we use synthetic biology to develop strains of Saccharomyces cerevisiae (baker's yeast) for high-yielding biological production of artemisinic acid, a precursor of artemisinin. Previous attempts to produce commercially relevant concentrations of artemisinic acid were unsuccessful, allowing production of only 1.6 grams per litre of artemisinic acid(3). Here we demonstrate the complete biosynthetic pathway, including the discovery of a plant dehydrogenase and a second cytochrome that provide an efficient biosynthetic route to artemisinic acid, with fermentation titres of 25 grams per litre of artemisinic acid. Furthermore, we have developed a practical, efficient and scalable chemical process for the conversion of artemisinic acid to artemisinin using a chemical source of singlet oxygen, thus avoiding the need for specialized photochemical equipment. The strains and processes described here form the basis of a viable industrial process for the production of semi-synthetic artemisinin to stabilize the supply of artemisinin for derivatization into active pharmaceutical ingredients (for example, artesunate) for incorporation into ACTs. Because all intellectual property rights have been provided free of charge, this technology has the potential to increase provision of first-line antimalarial treatments to the developing world at a reduced average annual price.
C1 [Paddon, C. J.; Westfall, P. J.; Pitera, D. J.; Benjamin, K.; Fisher, K.; McPhee, D.; Leavell, M. D.; Tai, A.; Main, A.; Eng, D.; Treynor, T.; Lenihan, J.; Fleck, M.; Bajad, S.; Dang, G.; Dengrove, D.; Diola, D.; Dorin, G.; Fickes, S.; Galazzo, J.; Gaucher, S. P.; Geistlinger, T.; Henry, R.; Horning, T.; Iqbal, T.; Jiang, H.; Kizer, L.; Lieu, B.; Melis, D.; Moss, N.; Regentin, R.; Secrest, S.; Tsuruta, H.; Vazquez, R.; Westblade, L. F.; Xu, L.; Yu, M.; Zhao, L.; Lievense, J.; Reiling, K. K.; Renninger, N. S.; Newman, J. D.] Amyris Inc, Emeryville, CA 94608 USA.
   [Polichuk, D. R.; Teoh, K. H.; Reed, D. W.; Ellens, K. W.; Hepp, M.; Zhang, Y.; Covello, P. S.] Natl Res Council Canada, Saskatoon, SK S7N 0W9, Canada.
   [Keasling, J. D.] Univ Calif Berkeley, Dept Chem & Biomol Engn, Berkeley, CA 94720 USA.
   [Keasling, J. D.] Univ Calif Berkeley, Dept Bioengn, Berkeley, CA 94720 USA.
   [Keasling, J. D.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Phys Biosci Div, Berkeley, CA 94720 USA.
   [Keasling, J. D.] Joint BioEnergy Inst, Emeryville, CA 94608 USA.
RP Paddon, CJ (reprint author), Amyris Inc, 5885 Hollis St,Suite 100, Emeryville, CA 94608 USA.
EM paddon@amyris.com; newman@amyris.com
RI Keasling, Jay/J-9162-2012; 
OI Keasling, Jay/0000-0003-4170-6088; Reed, Darwin/0000-0001-8038-8647
FU Institute for OneWorld Health
FX We thank D. Rathbone for advice on native A. annua ADH1 expression, and
   our friends and colleagues at Sanofi, especially D. Thibaut, C. Lehmann,
   C. Masson-Brocard, B. Dumas, P. Baduel and H. Farret. We also thank J.
   Rine, P. Ortiz de Montellano and H. van Dijken for many conversations.
   This research was conducted under the sponsorship of the Institute for
   OneWorld Health through generous support of the Bill & Melinda Gates
   Foundation for this non-profit project.
NR 29
TC 394
Z9 453
U1 69
U2 596
PU NATURE PUBLISHING GROUP
PI LONDON
PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND
SN 0028-0836
J9 NATURE
JI Nature
PD APR 25
PY 2013
VL 496
IS 7446
BP 528
EP +
DI 10.1038/nature12051
PG 9
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA 131HU
UT WOS:000317984400046
PM 23575629
ER

PT J
AU Hruszkewycz, SO
   Highland, MJ
   Holt, MV
   Kim, D
   Folkman, CM
   Thompson, C
   Tripathi, A
   Stephenson, GB
   Hong, S
   Fuoss, PH
AF Hruszkewycz, S. O.
   Highland, M. J.
   Holt, M. V.
   Kim, Dongjin
   Folkman, C. M.
   Thompson, Carol
   Tripathi, A.
   Stephenson, G. B.
   Hong, Seungbum
   Fuoss, P. H.
TI Imaging Local Polarization in Ferroelectric Thin Films by Coherent X-Ray
   Bragg Projection Ptychography
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID FORCE MICROSCOPY; DIFFRACTION; NANOSCALE; DISTORTIONS; CRYSTALS; PBTIO3;
   STRAIN
AB We used x-ray Bragg projection ptychography (BPP) to map spatial variations of ferroelectric polarization in thin film PbTiO3, which exhibited a striped nanoscale domain pattern on a high-miscut (001) SrTiO3 substrate. By converting the reconstructed BPP phase image to picometer-scale ionic displacements in the polar unit cell, a quantitative polarization map was made that was consistent with other characterization. The spatial resolution of 5.7 nm demonstrated here establishes BPP as an important tool for nanoscale ferroelectric domain imaging, especially in complex environments accessible with hard x rays. DOI: 10.1103/PhysRevLett.110.177601
C1 [Hruszkewycz, S. O.; Highland, M. J.; Kim, Dongjin; Folkman, C. M.; Stephenson, G. B.; Hong, Seungbum; Fuoss, P. H.] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA.
   [Holt, M. V.] Argonne Natl Lab, Ctr Nanoscale Mat, Argonne, IL 60439 USA.
   [Kim, Dongjin; Hong, Seungbum] Korea Adv Inst Sci & Technol, Dept Mat Sci & Engn, Taejon 305701, South Korea.
   [Thompson, Carol] No Illinois Univ, Dept Phys, De Kalb, IL 60115 USA.
   [Tripathi, A.] La Trobe Univ, ARC Ctr Excellence Coherent Xray Sci, Dept Phys, Bundoora, Vic 3086, Australia.
   [Stephenson, G. B.] Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA.
   [Hong, Seungbum] Argonne Natl Lab, Nanosci & Technol Div, Argonne, IL 60439 USA.
RP Hruszkewycz, SO (reprint author), Argonne Natl Lab, Div Mat Sci, 9700 S Cass Ave, Argonne, IL 60439 USA.
EM shrus@anl.gov
RI Kim, Dongjin/B-5624-2012; Hong, Seungbum/B-7708-2009
OI Hong, Seungbum/0000-0002-2667-1983
FU U.S. Department of Energy, Office of Science, Office of Basic Energy
   Sciences [DE-AC02-06CH11357]; U.S. DOE, Basic Energy Sciences, Materials
   Sciences and Engineering Division
FX This work, including use of the the Center for Nanoscale Materials and
   the Advanced Photon Source, was supported by the U.S. Department of
   Energy, Office of Science, Office of Basic Energy Sciences, under
   Contract No. DE-AC02-06CH11357. S. O. H., M. J. H., D. K., C. M. F., S.
   H., and P. H. F. were supported by U.S. DOE, Basic Energy Sciences,
   Materials Sciences and Engineering Division.
NR 41
TC 23
Z9 23
U1 3
U2 49
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD APR 25
PY 2013
VL 110
IS 17
AR 177601
DI 10.1103/PhysRevLett.110.177601
PG 5
WC Physics, Multidisciplinary
SC Physics
GA 134CU
UT WOS:000318188100019
PM 23679778
ER

PT J
AU Liu, F
   Budai, JD
   Li, XF
   Tischler, JZ
   Howe, JY
   Sun, CJ
   Meltzer, RS
   Pan, ZW
AF Liu, Feng
   Budai, John D.
   Li, Xufan
   Tischler, Jonathan Z.
   Howe, Jane Y.
   Sun, Chengjun
   Meltzer, Richard S.
   Pan, Zhengwei
TI New Ternary Europium Aluminate Luminescent Nanoribbons for Advanced
   Photonics
SO ADVANCED FUNCTIONAL MATERIALS
LA English
DT Article
ID INORGANIC-COMPOUNDS; EU2+; IONS; NANOPHOTONICS
AB Developing novel one-dimensional (1D) luminescent nanostructures (e.g., nanowires and nanoribbons) is highly desired for enabling progress in nanophotonics and other emerging optical technologies. Previous studies on 1D luminescent nanostructures were mostly focused on elemental and binary semiconductor materials, the light emission of which originates from the radiative recombination of electrons and holes via either intrinsic states or extrinsic defect states. Herein, three kinds of ternary europium aluminate nanoribbons are reported that have localized Eu2+ luminescent centers and exhibit new compositions, new crystal lattice structures, and new luminescence properties and mechanisms. These three europium aluminate nanoribbons are: blue luminescent EuAl6O10 with a new composition and a new tetragonal lattice structure, green luminescent EuAl2O4 with a monoclinic lattice structure, and orange luminescent EuAl2O4 with a new hexagonal lattice structure and extremely large band width and Stokes shift of emission. These materials have promising applications as nanometer-scale light generators and waveguides in nanophotonics and as light converting phosphors in warm white light-emitting diodes.
C1 [Liu, Feng; Li, Xufan; Pan, Zhengwei] Univ Georgia, Coll Engn, Athens, GA 30602 USA.
   [Liu, Feng; Meltzer, Richard S.; Pan, Zhengwei] Univ Georgia, Dept Phys & Astron, Athens, GA 30602 USA.
   [Budai, John D.; Tischler, Jonathan Z.; Howe, Jane Y.] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA.
   [Sun, Chengjun] Argonne Natl Lab, Xray Sci Div, Argonne, IL 60439 USA.
RP Liu, F (reprint author), Univ Georgia, Coll Engn, Athens, GA 30602 USA.
EM panz@uga.edu
RI Li, Xufan/A-8292-2013; Budai, John/R-9276-2016; 
OI Li, Xufan/0000-0001-9814-0383; Budai, John/0000-0002-7444-1306; Pan,
   Zhengwei/0000-0002-3854-958X
FU National Science Foundation [CAREER DMR-0955908]; Materials Sciences and
   Engineering Division, Office of Basic Energy Sciences (BES), U.S.
   Department of Energy (DOE); U.S. DOE [DE-AC02-06CH11357]; Argonne
   National Laboratory; Division of Scientific User Facilities of BES, U.S.
   DOE
FX Z.W.P. acknowledges funding support from the National Science Foundation
   (CAREER DMR-0955908). J.D.B. and J.Z.T. were supported by the Materials
   Sciences and Engineering Division, Office of Basic Energy Sciences
   (BES), U.S. Department of Energy (DOE). Use of the APS beamline 11-BM-B
   for synchrotron X-ray powder diffraction and beamline 34-ID-E for
   polychromatic Laue microdiffraction was supported by the Scientific User
   Facilities Division of BES, U.S. DOE. Use of the APS beamline 20-BM-B
   for XANES measurement by C.J.S. was supported by U.S. DOE under Contract
   No. DE-AC02-06CH11357 with Argonne National Laboratory. The TEM
   characterization was conducted at the Oak Ridge National Laboratory
   ShaRE User Facilities, which is sponsored by the Division of Scientific
   User Facilities of BES, U.S. DOE.
NR 39
TC 7
Z9 7
U1 2
U2 79
PU WILEY-V C H VERLAG GMBH
PI WEINHEIM
PA BOSCHSTRASSE 12, D-69469 WEINHEIM, GERMANY
SN 1616-301X
J9 ADV FUNCT MATER
JI Adv. Funct. Mater.
PD APR 25
PY 2013
VL 23
IS 16
BP 1998
EP 2006
DI 10.1002/adfm.201202539
PG 9
WC Chemistry, Multidisciplinary; Chemistry, Physical; Nanoscience &
   Nanotechnology; Materials Science, Multidisciplinary; Physics, Applied;
   Physics, Condensed Matter
SC Chemistry; Science & Technology - Other Topics; Materials Science;
   Physics
GA 135UW
UT WOS:000318315100002
ER

PT J
AU Fossez, K
   Michel, N
   Nazarewicz, W
   Ploszajczak, M
AF Fossez, K.
   Michel, N.
   Nazarewicz, W.
   Ploszajczak, M.
TI Bound states of dipolar molecules studied with the Berggren expansion
   method
SO PHYSICAL REVIEW A
LA English
DT Article
ID RIGGED HILBERT-SPACE; CRITICAL BINDING; POLAR-MOLECULES; NEGATIVE-IONS;
   NUCLEAR-REACTIONS; RESONANT STATES; ELECTRON-IMPACT; EXCITED-STATES;
   GAMOW VECTORS; QUANTUM HALOS
AB Bound states of dipole-bound anions are studied by using a nonadiabatic pseudopotential method and the Berggren expansion involving bound states, decaying resonant states, and nonresonant scattering continuum. The method is benchmarked by using the traditional technique of direct integration of coupled-channel equations. A good agreement between the two methods has been found for well-bound states. For weakly bound subthreshold states with binding energies comparable to rotational energies of the anion, the direct integration approach breaks down and the Berggren expansion method becomes the tool of choice. DOI: 10.1103/PhysRevA.87.042515
C1 [Fossez, K.; Ploszajczak, M.] CEA DSM CNRS IN2P3, GANIL, F-14076 Caen, France.
   [Michel, N.; Nazarewicz, W.] Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA.
   [Michel, N.; Nazarewicz, W.] Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA.
   [Nazarewicz, W.] Univ Warsaw, Inst Theoret Phys, PL-00681 Warsaw, Poland.
RP Fossez, K (reprint author), CEA DSM CNRS IN2P3, GANIL, BP 55027, F-14076 Caen, France.
FU US Department of Energy [DE-FG02-96ER40963]
FX Stimulating discussions with and helpful suggestions from R. N. Compton
   and W. R. Garrett, who encouraged us to apply the complex-energy Gamow
   shell model framework to dipolar anions, are gratefully acknowledged.
   This work was supported by the US Department of Energy under Contract
   No. DE-FG02-96ER40963.
NR 98
TC 9
Z9 9
U1 2
U2 16
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1050-2947
J9 PHYS REV A
JI Phys. Rev. A
PD APR 25
PY 2013
VL 87
IS 4
AR 042515
DI 10.1103/PhysRevA.87.042515
PG 11
WC Optics; Physics, Atomic, Molecular & Chemical
SC Optics; Physics
GA 133XC
UT WOS:000318173200004
ER

PT J
AU Nesterov, AI
   Zepeda, JCB
   Berman, GP
AF Nesterov, Alexander I.
   Beas Zepeda, Juan Carlos
   Berman, Gennady P.
TI Non-Hermitian quantum annealing in the ferromagnetic Ising model
SO PHYSICAL REVIEW A
LA English
DT Article
ID NONADIABATIC TRANSITIONS; ADIABATIC EVOLUTION; PHASE; PERTURBATION;
   POINTS; SYSTEM
AB We developed a non-Hermitian quantum optimization algorithm to find the ground state of the ferromagnetic Ising model with up to 1024 spins (qubits). Our approach leads to significant reduction of the annealing time. Analytical and numerical results demonstrate that the total annealing time is proportional to ln N, where N is the number of spins. This encouraging result is important in using classical computers in combination with quantum algorithms for the fast solutions of NP-complete problems. Additional research is proposed for extending our dissipative algorithm to more complicated problems. DOI: 10.1103/PhysRevA.87.042332
C1 [Nesterov, Alexander I.; Beas Zepeda, Juan Carlos] Univ Guadalajara, CUCEI, Dept Fis, Guadalajara 44420, Jalisco, Mexico.
   [Berman, Gennady P.] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87544 USA.
RP Nesterov, AI (reprint author), Univ Guadalajara, CUCEI, Dept Fis, Ave Revoluc 1500, Guadalajara 44420, Jalisco, Mexico.
EM nesterov@cencar.udg.mx; juancarlosbeas@gmail.com; gpb@lanl.gov
OI Nesterov, Alexander/0000-0002-4801-4570
FU National Nuclear Security Administration of the U.S. Department of
   Energy at Los Alamos National Laboratory [DE-AC52-06NA25396]; CONACyT
   [118930, 171014]
FX The work by G. P. B. was carried out under the auspices of the National
   Nuclear Security Administration of the U.S. Department of Energy at Los
   Alamos National Laboratory under Contract No. DE-AC52-06NA25396. A.I.N.
   acknowledges the support from the CONACyT, Grant No. 118930. J.C.B.Z.
   acknowledges the support from the CONACyT, Grant No. 171014.
NR 50
TC 4
Z9 4
U1 1
U2 6
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 2469-9926
EI 2469-9934
J9 PHYS REV A
JI Phys. Rev. A
PD APR 25
PY 2013
VL 87
IS 4
AR 042332
DI 10.1103/PhysRevA.87.042332
PG 13
WC Optics; Physics, Atomic, Molecular & Chemical
SC Optics; Physics
GA 133XC
UT WOS:000318173200003
ER

PT J
AU Shvyd'ko, Y
   Stoupin, S
   Mundboth, K
   Kim, J
AF Shvyd'ko, Yuri
   Stoupin, Stanislav
   Mundboth, Kiran
   Kim, Jungho
TI Hard-x-ray spectrographs with resolution beyond 100 mu eV
SO PHYSICAL REVIEW A
LA English
DT Article
ID CZERNY-TURNER SPECTROMETER; SYNCHROTRON-RADIATION; PERFORMANCE;
   GEOMETRY; BEAMS
AB Spectrographs take snapshots of photon spectra with array detectors by dispersing photons of different energies into distinct directions and spatial locations. Spectrographs require optics with a large angular dispersion rate as the key component. In visible light optics, diffraction gratings are used for this purpose. In the hard-x-ray regime, achieving large dispersion rates is a challenge. Here we show that multicrystal, multi-Bragg-reflection arrangements feature cumulative angular dispersion rates almost two orders of magnitude larger than those attainable with a single-Bragg reflection. As a result, the multicrystal arrangements become potential dispersing elements of hard-x-ray spectrographs. The hard-x-ray spectrograph principles are demonstrated by imaging a spectrum of photons with a record high resolution of Delta E similar or equal to 90 mu eV in the hard-x-ray regime, using multicrystal optics as the dispersing element. The spectrographs can boost research using inelastic ultrahigh-resolution x-ray spectroscopies with synchrotrons and seeded x-ray free electron lasers. DOI: 10.1103/PhysRevA.87.043835
C1 [Shvyd'ko, Yuri; Stoupin, Stanislav; Kim, Jungho] Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA.
   [Mundboth, Kiran] Diamond Light Source Ltd, Didcot OX11 0DE, Oxon, England.
RP Shvyd'ko, Y (reprint author), Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA.
EM shvydko@aps.anl.gov
FU US Department of Energy, Office of Science, Office of Basic Energy
   Sciences [DE-AC02-06CH11357]
FX We are grateful to L. Young for supporting this project at the Advanced
   Photon Source (APS), and to S. Collins and G. Materlik at the Diamond
   Light Source (DLS). D. Shu, T. Roberts, K. Goetze, J. Kirchman, P.
   Jemian, M. Upton, and Y. Ding are acknowledged for technical support.
   Work was supported by the US Department of Energy, Office of Science,
   Office of Basic Energy Sciences, under Contract No. DE-AC02-06CH11357.
NR 19
TC 11
Z9 11
U1 0
U2 11
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1050-2947
J9 PHYS REV A
JI Phys. Rev. A
PD APR 25
PY 2013
VL 87
IS 4
AR 043835
DI 10.1103/PhysRevA.87.043835
PG 6
WC Optics; Physics, Atomic, Molecular & Chemical
SC Optics; Physics
GA 133XC
UT WOS:000318173200011
ER

PT J
AU Cassidy, MC
   Ramanathan, C
   Cory, DG
   Ager, JW
   Marcus, CM
AF Cassidy, M. C.
   Ramanathan, C.
   Cory, D. G.
   Ager, J. W.
   Marcus, C. M.
TI Radical-free dynamic nuclear polarization using electronic defects in
   silicon
SO PHYSICAL REVIEW B
LA English
DT Article
ID SOLID-STATE NMR; SPECTROSCOPY; SURFACE; AGENT; WATER; CORE
AB Direct dynamic nuclear polarization of H-1 nuclei in frozen water and water-ethanol mixtures is demonstrated using silicon nanoparticles as the polarizing agent. Electron spins at dangling-bond sites near the silicon surface are identified as the source of the nuclear hyperpolarization. This polarization method opens avenues for the fabrication of surface engineered nanostructures to create high nuclear spin polarized solutions without introducing contaminating radicals, and for the study of molecules adsorbed onto surfaces. DOI: 10.1103/PhysRevB.87.161306
C1 [Cassidy, M. C.] Harvard Univ, Sch Engn & Appl Sci, Cambridge, MA 02138 USA.
   [Ramanathan, C.] Dartmouth Coll, Dept Phys & Astron, Hanover, NH 03755 USA.
   [Cory, D. G.] Univ Waterloo, Dept Chem, Waterloo, ON N2L 3G1, Canada.
   [Cory, D. G.] Univ Waterloo, Inst Quantum Comp, Waterloo, ON N2L 3G1, Canada.
   [Cory, D. G.] Perimeter Inst Theoret Phys, Waterloo, ON N2L 2Y5, Canada.
   [Ager, J. W.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94720 USA.
   [Marcus, C. M.] Harvard Univ, Dept Phys, Cambridge, MA 02138 USA.
   [Marcus, C. M.] Univ Copenhagen, Niels Bohr Inst, Ctr Quantum Devices, DK-2100 Copenhagen, Denmark.
RP Cassidy, MC (reprint author), Harvard Univ, Sch Engn & Appl Sci, Cambridge, MA 02138 USA.
RI Ramanathan, Chandrasekhar/C-5207-2008; Marcus, Charles/M-4526-2014; 
OI Ramanathan, Chandrasekhar/0000-0002-7457-3608; Marcus,
   Charles/0000-0003-2420-4692; Ager, Joel/0000-0001-9334-9751
FU National Science Foundation [NSF-0702295]; BISH Program [CBET-0933015];
   Harvard NSF Nanoscale Science and Engineering Center; Canada Excellence
   Research Chairs Program; Danish National Research Foundation; Office of
   Science, Office of Basic Energy Sciences, Materials Sciences and
   Engineering Division of the US Department of Energy [DE-AC02-05CH11231]
FX We acknowledge support from the National Science Foundation under
   NSF-0702295, the BISH Program (CBET-0933015), the Harvard NSF Nanoscale
   Science and Engineering Center, the Canada Excellence Research Chairs
   Program, and the Danish National Research Foundation. Fabrication was
   done at the Harvard Center for Nanoscale Systems (CNS), an NSF National
   Nanotechnology Infrastructure Network (NNIN) site (ECS 0335765). Work at
   the LBNL (<SUP>29</SUP>Si synthesis) was supported by the Director,
   Office of Science, Office of Basic Energy Sciences, Materials Sciences
   and Engineering Division of the US Department of Energy (Contract No.
   DE-AC02-05CH11231).
NR 39
TC 11
Z9 11
U1 2
U2 37
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD APR 25
PY 2013
VL 87
IS 16
AR 161306
DI 10.1103/PhysRevB.87.161306
PG 4
WC Physics, Condensed Matter
SC Physics
GA 133ZE
UT WOS:000318178600002
ER

PT J
AU Morrison, K
   Dupas, A
   Mudryk, Y
   Pecharsky, VK
   Gschneidner, KA
   Caplin, AD
   Cohen, LF
AF Morrison, K.
   Dupas, A.
   Mudryk, Y.
   Pecharsky, V. K.
   Gschneidner, K. A.
   Caplin, A. D.
   Cohen, L. F.
TI Identifying the critical point of the weakly first-order itinerant
   magnet DyCo2 with complementary magnetization and calorimetric
   measurements
SO PHYSICAL REVIEW B
LA English
DT Article
ID BAND MODEL; PHASE-TRANSITIONS; ORDER; FERROMAGNETISM; FIELDS;
   INTERMETALLICS; METAMAGNETISM; SYSTEM
AB We examine the character of the itinerant magnetic transition of DyCo2 by different calorimetric methods, thereby separating the heat capacity and latent heat contributions to the entropy-allowing direct comparison to other itinerant electron metamagnetic systems. The heat capacity exhibits a large lambda-like peak at the ferrimagnetic ordering phase transition, a signature that is remarkably similar to La(Fe,Si)(13), where it is attributed to giant spin fluctuations. Using calorimetric measurements, we also determine the point at which the phase transition ceases to be first order: the critical magnetic field, mu H-0(crit) = 0.4 +/- 0.1 T and temperature T-crit = 138.5 +/- 0.5 K, and we compare these values to those obtained from analysis of magnetization by application of the Shimizu inequality for itinerant electron metamagnetism. Good agreement is found between these independent measurements, thus establishing the phase diagram and critical point with some confidence. In addition, we find that the often-used Banerjee criterion may not be suitable for determination of first order behavior in itinerant magnet systems. DOI: 10.1103/PhysRevB.87.134421
C1 [Morrison, K.; Dupas, A.; Caplin, A. D.; Cohen, L. F.] Univ London Imperial Coll Sci Technol & Med, Blackett Lab, London SW7 2BZ, England.
   [Mudryk, Y.; Pecharsky, V. K.; Gschneidner, K. A.] Iowa State Univ, US DOE, Ames Lab, Ames, IA 50011 USA.
   [Mudryk, Y.; Pecharsky, V. K.; Gschneidner, K. A.] Iowa State Univ, Dept Mat Sci & Engn, Ames, IA 50011 USA.
   [Morrison, K.] Univ Loughborough, Dept Phys, Loughborough LE11 3TU, Leics, England.
RP Morrison, K (reprint author), Univ London Imperial Coll Sci Technol & Med, Blackett Lab, Prince Consort Rd, London SW7 2BZ, England.
RI morrison, kelly/G-5249-2013
OI morrison, kelly/0000-0001-5672-3310
FU European Community's 7th Framework Programme [214864]; EPSRC
   [EP/G060940/1]; Office of Basic Energy Sciences, Materials Sciences
   Division of the Office of Science, U.S. Department of Energy; U.S.
   Department of Energy [DE-AC02-07CH11358]
FX The research leading to these results has received funding from the
   European Community's 7th Framework Programme under Grant Agreement No.
   214864 ("SSEEC") and EPSRC EP/G060940/1. The sample preparation and
   x-ray characterization were performed at the Ames Laboratory of the U.S.
   Department of Energy. Work at Ames Laboratory is supported by the Office
   of Basic Energy Sciences, Materials Sciences Division of the Office of
   Science, U.S. Department of Energy. The Ames Laboratory is operated by
   Iowa State University of Science and Technology for the U.S. Department
   of Energy under Contract No. DE-AC02-07CH11358.
NR 40
TC 6
Z9 6
U1 6
U2 30
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD APR 25
PY 2013
VL 87
IS 13
AR 134421
DI 10.1103/PhysRevB.87.134421
PG 6
WC Physics, Condensed Matter
SC Physics
GA 133XQ
UT WOS:000318174600003
ER

PT J
AU Adare, A
   Afanasiev, S
   Aidala, C
   Ajitanand, NN
   Akiba, Y
   Akimoto, R
   Al-Bataineh, H
   Al-Ta'ani, H
   Alexander, J
   Andrews, KR
   Angerami, A
   Aoki, K
   Apadula, N
   Aphecetche, L
   Appelt, E
   Aramaki, Y
   Armendariz, R
   Asai, J
   Aschenauer, EC
   Atomssa, ET
   Averbeck, R
   Awes, TC
   Azmoun, B
   Babintsev, V
   Bai, M
   Baksay, G
   Baksay, L
   Baldisseri, A
   Bannier, B
   Barish, KN
   Barnes, PD
   Bassalleck, B
   Basye, AT
   Bathe, S
   Batsouli, S
   Baublis, V
   Baumann, C
   Bazilevsky, A
   Belikov, S
   Belmont, R
   Ben-Benjamin, J
   Bennett, R
   Berdnikov, A
   Berdnikov, Y
   Bhom, JH
   Bickley, AA
   Blau, DS
   Boissevain, JG
   Bok, JS
   Borel, H
   Boyle, K
   Brooks, ML
   Broxmeyer, D
   Buesching, H
   Bumazhnov, V
   Bunce, G
   Butsyk, S
   Camacho, CM
   Campbell, S
   Caringi, A
   Castera, P
   Chang, BS
   Chang, WC
   Charvet, JL
   Chen, CH
   Chernichenko, S
   Chi, CY
   Chiu, M
   Choi, IJ
   Choi, JB
   Choudhury, RK
   Christiansen, P
   Chujo, T
   Chung, P
   Churyn, A
   Chvala, O
   Cianciolo, V
   Citron, Z
   Cole, BA
   del Valle, ZC
   Connors, M
   Constantin, P
   Csanad, M
   Csorgo, T
   Dahms, T
   Dairaku, S
   Danchev, I
   Das, K
   Datta, A
   David, G
   Dayananda, MK
   Denisov, A
   d'Enterria, D
   Deshpande, A
   Desmond, EJ
   Dharmawardane, KV
   Dietzsch, O
   Dion, A
   Donadelli, M
   Drapier, O
   Drees, A
   Drees, KA
   Dubey, AK
   Durham, JM
   Durum, A
   Dutta, D
   Dzhordzhadze, V
   D'Orazio, L
   Edwards, S
   Efremenko, YV
   Ellinghaus, F
   Engelmore, T
   Enokizono, A
   En'yo, H
   Esumi, S
   Eyser, KO
   Fadem, B
   Fields, DE
   Finger, M
   Finger, M
   Fleuret, F
   Fokin, SL
   Fraenkel, Z
   Frantz, JE
   Franz, A
   Frawley, AD
   Fujiwara, K
   Fukao, Y
   Fusayasu, T
   Gal, C
   Garishvili, I
   Glenn, A
   Gong, H
   Gong, X
   Gonin, M
   Gosset, J
   Goto, Y
   de Cassagnac, RG
   Grau, N
   Greene, SV
   Grim, G
   Perdekamp, MG
   Gunji, T
   Guo, L
   Gustafsson, HA
   Henni, AH
   Haggerty, JS
   Hahn, KI
   Hamagaki, H
   Hamblen, J
   Han, R
   Hanks, J
   Harper, C
   Hartouni, EP
   Haruna, K
   Hashimoto, K
   Haslum, E
   Hayano, R
   He, X
   Heffner, M
   Hemmick, TK
   Hester, T
   Hill, JC
   Hohlmann, M
   Hollis, RS
   Holzmann, W
   Homma, K
   Hong, B
   Horaguchi, T
   Hori, Y
   Hornback, D
   Huang, S
   Ichihara, T
   Ichimiya, R
   Iinuma, H
   Ikeda, Y
   Imai, K
   Imrek, J
   Inaba, M
   Iordanova, A
   Isenhower, D
   Ishihara, M
   Isobe, T
   Issah, M
   Isupov, A
   Ivanischev, D
   Iwanaga, Y
   Jacak, BV
   Jia, J
   Jiang, X
   Jin, J
   John, D
   Johnson, BM
   Jones, T
   Joo, KS
   Jouan, D
   Jumper, DS
   Kajihara, F
   Kametani, S
   Kamihara, N
   Kamin, J
   Kaneti, S
   Kang, BH
   Kang, JH
   Kang, JS
   Kapustinsky, J
   Karatsu, K
   Kasai, M
   Kawall, D
   Kawashima, M
   Kazantsev, AV
   Kempel, T
   Khanzadeev, A
   Kijima, KM
   Kikuchi, J
   Kim, A
   Kim, BI
   Kim, DH
   Kim, DJ
   Kim, E
   Kim, EJ
   Kim, SH
   Kim, YJ
   Kim, YK
   Kinney, E
   Kiriluk, K
   Kiss, A
   Kistenev, E
   Klay, J
   Klein-Boesing, C
   Kleinjan, D
   Kline, P
   Kochenda, L
   Komkov, B
   Konno, M
   Koster, J
   Kotov, D
   Kozlov, A
   Kral, A
   Kravitz, A
   Kunde, GJ
   Kurita, K
   Kurosawa, M
   Kweon, MJ
   Kwon, Y
   Kyle, GS
   Lacey, R
   Lai, YS
   Lajoie, JG
   Layton, D
   Lebedev, A
   Lee, DM
   Lee, J
   Lee, KB
   Lee, KS
   Lee, SH
   Lee, SR
   Lee, T
   Leitch, MJ
   Leite, MAL
   Lenzi, B
   Lewis, B
   Li, X
   Lichtenwalner, P
   Liebing, P
   Lim, SH
   Levy, LAL
   Liska, T
   Litvinenko, A
   Liu, H
   Liu, MX
   Love, B
   Lynch, D
   Maguire, CF
   Makdisi, YI
   Malakhov, A
   Malik, MD
   Manion, A
   Manko, VI
   Mannel, E
   Mao, Y
   Masek, L
   Masui, H
   Matathias, F
   McCumber, M
   McGaughey, PL
   McGlinchey, D
   McKinney, C
   Means, N
   Mendoza, M
   Meredith, B
   Miake, Y
   Mibe, T
   Mignerey, AC
   Mikes, P
   Miki, K
   Milov, A
   Mishra, M
   Mitchell, JT
   Miyachi, Y
   Mohanty, AK
   Moon, HJ
   Morino, Y
   Morreale, A
   Morrison, DP
   Motschwiller, S
   Moukhanova, TV
   Mukhopadhyay, D
   Murakami, T
   Murata, J
   Nagamiya, S
   Nagle, JL
   Naglis, M
   Nagy, MI
   Nakagawa, I
   Nakamiya, Y
   Nakamura, KR
   Nakamura, T
   Nakano, K
   Nam, S
   Newby, J
   Nguyen, M
   Nihashi, M
   Niida, T
   Nouicer, R
   Nyanin, AS
   Oakley, C
   O'Brien, E
   Oda, SX
   Ogilvie, CA
   Oka, M
   Okada, K
   Onuki, Y
   Oskarsson, A
   Ouchida, M
   Ozawa, K
   Pak, R
   Palounek, APT
   Pantuev, V
   Papavassiliou, V
   Park, BH
   Park, IH
   Park, J
   Park, SK
   Park, WJ
   Pate, SF
   Patel, L
   Pei, H
   Peng, JC
   Pereira, H
   Peresedov, V
   Peressounko, DY
   Petti, R
   Pinkenburg, C
   Pisani, RP
   Proissl, M
   Purschke, ML
   Purwar, AK
   Qu, H
   Rak, J
   Rakotozafindrabe, A
   Ravinovich, I
   Read, KF
   Rembeczki, S
   Reygers, K
   Riabov, V
   Riabov, Y
   Richardson, E
   Roach, D
   Roche, G
   Rolnick, SD
   Rosati, M
   Rosen, CA
   Rosendahl, SSE
   Rosnet, P
   Rukoyatkin, P
   Ruzicka, P
   Rykov, VL
   Sahlmueller, B
   Saito, N
   Sakaguchi, T
   Sakai, S
   Sakashita, K
   Samsonov, V
   Sano, S
   Sarsour, M
   Sato, T
   Savastio, M
   Sawada, S
   Sedgwick, K
   Seele, J
   Seidl, R
   Semenov, AY
   Semenov, V
   Seto, R
   Sharma, D
   Shein, I
   Shibata, TA
   Shigaki, K
   Shim, HH
   Shimomura, M
   Shoji, K
   Shukla, P
   Sickles, A
   Silva, CL
   Silvermyr, D
   Silvestre, C
   Sim, KS
   Singh, BK
   Singh, CP
   Singh, V
   Slunecka, M
   Sodre, T
   Soldatov, A
   Soltz, RA
   Sondheim, WE
   Sorensen, SP
   Sourikova, IV
   Staley, F
   Stankus, PW
   Stenlund, E
   Stepanov, M
   Ster, A
   Stoll, SP
   Sugitate, T
   Suire, C
   Sukhanov, A
   Sun, J
   Sziklai, J
   Takagui, EM
   Takahara, A
   Taketani, A
   Tanabe, R
   Tanaka, Y
   Taneja, S
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   Tannenbaum, MJ
   Tarafdar, S
   Taranenko, A
   Tarjan, P
   Tennant, E
   Themann, H
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   Thomas, TL
   Togawa, M
   Toia, A
   Tomasek, L
   Tomasek, M
   Tomita, Y
   Torii, H
   Towell, RS
   Tram, VN
   Tserruya, I
   Tsuchimoto, Y
   Utsunomiya, K
   Vale, C
   Valle, H
   van Hecke, HW
   Vazquez-Zambrano, E
   Veicht, A
   Velkovska, J
   Vertesi, R
   Vinogradov, AA
   Virius, M
   Vossen, A
   Vrba, V
   Vznuzdaev, E
   Wang, XR
   Watanabe, D
   Watanabe, K
   Watanabe, Y
   Watanabe, YS
   Wei, F
   Wei, R
   Wessels, J
   White, SN
   Winter, D
   Woody, CL
   Wright, RM
   Wysocki, M
   Xie, W
   Yamaguchi, YL
   Yamaura, K
   Yang, R
   Yanovich, A
   Ying, J
   Yokkaichi, S
   Yoo, JS
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   Liska, T.
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   Liu, M. X.
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   Maguire, C. F.
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   Malakhov, A.
   Malik, M. D.
   Manion, A.
   Manko, V. I.
   Mannel, E.
   Mao, Y.
   Masek, L.
   Masui, H.
   Matathias, F.
   McCumber, M.
   McGaughey, P. L.
   McGlinchey, D.
   McKinney, C.
   Means, N.
   Mendoza, M.
   Meredith, B.
   Miake, Y.
   Mibe, T.
   Mignerey, A. C.
   Mikes, P.
   Miki, K.
   Milov, A.
   Mishra, M.
   Mitchell, J. T.
   Miyachi, Y.
   Mohanty, A. K.
   Moon, H. J.
   Morino, Y.
   Morreale, A.
   Morrison, D. P.
   Motschwiller, S.
   Moukhanova, T. V.
   Mukhopadhyay, D.
   Murakami, T.
   Murata, J.
   Nagamiya, S.
   Nagle, J. L.
   Naglis, M.
   Nagy, M. I.
   Nakagawa, I.
   Nakamiya, Y.
   Nakamura, K. R.
   Nakamura, T.
   Nakano, K.
   Nam, S.
   Newby, J.
   Nguyen, M.
   Nihashi, M.
   Niida, T.
   Nouicer, R.
   Nyanin, A. S.
   Oakley, C.
   O'Brien, E.
   Oda, S. X.
   Ogilvie, C. A.
   Oka, M.
   Okada, K.
   Onuki, Y.
   Oskarsson, A.
   Ouchida, M.
   Ozawa, K.
   Pak, R.
   Palounek, A. P. T.
   Pantuev, V.
   Papavassiliou, V.
   Park, B. H.
   Park, I. H.
   Park, J.
   Park, S. K.
   Park, W. J.
   Pate, S. F.
   Patel, L.
   Pei, H.
   Peng, J. -C.
   Pereira, H.
   Peresedov, V.
   Peressounko, D. Yu
   Petti, R.
   Pinkenburg, C.
   Pisani, R. P.
   Proissl, M.
   Purschke, M. L.
   Purwar, A. K.
   Qu, H.
   Rak, J.
   Rakotozafindrabe, A.
   Ravinovich, I.
   Read, K. F.
   Rembeczki, S.
   Reygers, K.
   Riabov, V.
   Riabov, Y.
   Richardson, E.
   Roach, D.
   Roche, G.
   Rolnick, S. D.
   Rosati, M.
   Rosen, C. A.
   Rosendahl, S. S. E.
   Rosnet, P.
   Rukoyatkin, P.
   Ruzicka, P.
   Rykov, V. L.
   Sahlmueller, B.
   Saito, N.
   Sakaguchi, T.
   Sakai, S.
   Sakashita, K.
   Samsonov, V.
   Sano, S.
   Sarsour, M.
   Sato, T.
   Savastio, M.
   Sawada, S.
   Sedgwick, K.
   Seele, J.
   Seidl, R.
   Semenov, A. Yu
   Semenov, V.
   Seto, R.
   Sharma, D.
   Shein, I.
   Shibata, T. -A.
   Shigaki, K.
   Shim, H. H.
   Shimomura, M.
   Shoji, K.
   Shukla, P.
   Sickles, A.
   Silva, C. L.
   Silvermyr, D.
   Silvestre, C.
   Sim, K. S.
   Singh, B. K.
   Singh, C. P.
   Singh, V.
   Slunecka, M.
   Sodre, T.
   Soldatov, A.
   Soltz, R. A.
   Sondheim, W. E.
   Sorensen, S. P.
   Sourikova, I. V.
   Staley, F.
   Stankus, P. W.
   Stenlund, E.
   Stepanov, M.
   Ster, A.
   Stoll, S. P.
   Sugitate, T.
   Suire, C.
   Sukhanov, A.
   Sun, J.
   Sziklai, J.
   Takagui, E. M.
   Takahara, A.
   Taketani, A.
   Tanabe, R.
   Tanaka, Y.
   Taneja, S.
   Tanida, K.
   Tannenbaum, M. J.
   Tarafdar, S.
   Taranenko, A.
   Tarjan, P.
   Tennant, E.
   Themann, H.
   Thomas, D.
   Thomas, T. L.
   Togawa, M.
   Toia, A.
   Tomasek, L.
   Tomasek, M.
   Tomita, Y.
   Torii, H.
   Towell, R. S.
   Tram, V-N.
   Tserruya, I.
   Tsuchimoto, Y.
   Utsunomiya, K.
   Vale, C.
   Valle, H.
   van Hecke, H. W.
   Vazquez-Zambrano, E.
   Veicht, A.
   Velkovska, J.
   Vertesi, R.
   Vinogradov, A. A.
   Virius, M.
   Vossen, A.
   Vrba, V.
   Vznuzdaev, E.
   Wang, X. R.
   Watanabe, D.
   Watanabe, K.
   Watanabe, Y.
   Watanabe, Y. S.
   Wei, F.
   Wei, R.
   Wessels, J.
   White, S. N.
   Winter, D.
   Woody, C. L.
   Wright, R. M.
   Wysocki, M.
   Xie, W.
   Yamaguchi, Y. L.
   Yamaura, K.
   Yang, R.
   Yanovich, A.
   Ying, J.
   Yokkaichi, S.
   Yoo, J. S.
   You, Z.
   Young, G. R.
   Younus, I.
   Yushmanov, I. E.
   Zajc, W. A.
   Zaudtke, O.
   Zelenski, A.
   Zhang, C.
   Zhou, S.
   Zolin, L.
CA PHENIX Collaboration
TI gamma (1S+2S+3S) production in d plus Au and p plus p collisions at root
   s(NN)=200 GeV and cold-nuclear-matter effects
SO PHYSICAL REVIEW C
LA English
DT Article
ID PARTON DISTRIBUTIONS
AB The three gamma states, gamma (1S + 2S + 3S), are measured in d + Au and p + p collisions at root s(NN) = 200 GeV and rapidities 1.2 < vertical bar y vertical bar < 2.2 by the PHENIX experiment at the Relativistic Heavy Ion Collider. Cross sections for the inclusive gamma (1S + 2S + 3S) production are obtained. The inclusive yields per binary collision for d + Au collisions relative to those in p + p collisions (R-dAu) are found to be 0.62 +/- 0.26 (stat) +/- 0.13 (syst) in the gold-going direction and 0.91 +/- 0.33 (stat) +/- 0.16 (syst) in the deuteron-going direction. The measured results are compared to a nuclear-shadowing model, EPS09 [Eskola et al., J. High Energy Phys. 04 (2009) 065], combined with a final-state breakup cross section, sigma(br), and compared to lower energy p + A results. We also compare the results to the PHENIX J/psi results [Adare et al., Phys. Rev. Lett. 107, 142301 (2011)]. The rapidity dependence of the observed gamma suppression is consistent with lower energy p + A measurements. DOI: 10.1103/PhysRevC.87.044909
C1 [Andrews, K. R.; Basye, A. T.; Isenhower, D.; Jones, T.; Jumper, D. S.; Thomas, D.; Towell, R. S.; Wright, R. M.] Abilene Christian Univ, Abilene, TX 79699 USA.
   [Chang, W. C.] Acad Sinica, Inst Phys, Taipei 11529, Taiwan.
   [Grau, N.] Augustana Coll, Dept Phys, Sioux Falls, SD 57197 USA.
   [Mishra, M.; Singh, B. K.; Singh, C. P.; Singh, V.; Tarafdar, S.] Banaras Hindu Univ, Dept Phys, Varanasi 221005, Uttar Pradesh, India.
   [Choudhury, R. K.; Dutta, D.; Mohanty, A. K.; Shukla, P.] Bhabha Atom Res Ctr, Bombay 400085, Maharashtra, India.
   [Bathe, S.] CUNY, Baruch Coll, New York, NY 10010 USA.
   [Bai, M.; Drees, K. A.; Makdisi, Y. I.; Zelenski, A.] Brookhaven Natl Lab, Collider Accelerator Dept, Upton, NY 11973 USA.
   [Aschenauer, E. C.; Azmoun, B.; Bazilevsky, A.; Buesching, H.; Bunce, G.; Chiu, M.; David, G.; Desmond, E. J.; Franz, A.; Haggerty, J. S.; Jia, J.; Johnson, B. M.; Kistenev, E.; Milov, A.; Mitchell, J. T.; Morrison, D. P.; Nouicer, R.; O'Brien, E.; Pak, R.; Pinkenburg, C.; Pisani, R. P.; Purschke, M. L.; Sakaguchi, T.; Sickles, A.; Sourikova, I. V.; Stoll, S. P.; Sukhanov, A.; Tannenbaum, M. J.; Vale, C.; White, S. N.; Woody, C. L.] Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA.
   [Armendariz, R.; Barish, K. N.; Bathe, S.; Belikov, S.; Chvala, O.; Dzhordzhadze, V.; Eyser, K. O.; Hester, T.; Hollis, R. S.; Iordanova, A.; Kleinjan, D.; Mendoza, M.; Morreale, A.; Rolnick, S. D.; Sedgwick, K.; Seto, R.] Univ Calif Riverside, Riverside, CA 92521 USA.
   [Finger, M.; Finger, M., Jr.; Masek, L.; Slunecka, M.] Charles Univ Prague, CR-11636 Prague, Czech Republic.
   [Choi, J. B.; Kim, E. -J.; Lee, S. R.] Chonbuk Natl Univ, Jeonju 561756, South Korea.
   [Li, X.; Zhou, S.] China Inst Atom Energy, Sci & Technol Nucl Data Lab, Beijing 102413, Peoples R China.
   [Akimoto, R.; Aramaki, Y.; Gunji, T.; Hamagaki, H.; Hayano, R.; Horaguchi, T.; Hori, Y.; Isobe, T.; Kajihara, F.; Morino, Y.; Oda, S. X.; Ozawa, K.; Sano, S.; Takahara, A.; Utsunomiya, K.; Watanabe, Y. S.; Yamaguchi, Y. L.] Univ Tokyo, Grad Sch Sci, Ctr Nucl Study, Bunkyo Ku, Tokyo 1130033, Japan.
   [Adare, A.; Bickley, A. A.; Ellinghaus, F.; Glenn, A.; Kinney, E.; Kiriluk, K.; Levy, L. A. Linden; McCumber, M.; McGlinchey, D.; Nagle, J. L.; Rosen, C. A.; Seele, J.; Wysocki, M.] Univ Colorado, Boulder, CO 80309 USA.
   [Angerami, A.; Chi, C. Y.; Cole, B. A.; Engelmore, T.; Grau, N.; Hanks, J.; Holzmann, W.; Jia, J.; Jin, J.; Kravitz, A.; Lai, Y. S.; Mannel, E.; Matathias, F.; Vazquez-Zambrano, E.; Veicht, A.; Winter, D.; Zajc, W. A.] Columbia Univ, New York, NY 10027 USA.
   [Angerami, A.; Chi, C. Y.; Cole, B. A.; Engelmore, T.; Grau, N.; Hanks, J.; Holzmann, W.; Jia, J.; Jin, J.; Kravitz, A.; Lai, Y. S.; Mannel, E.; Matathias, F.; Vazquez-Zambrano, E.; Veicht, A.; Winter, D.; Zajc, W. A.] Nevis Labs, Irvington, NY 10533 USA.
   [Kral, A.; Liska, T.; Virius, M.] Czech Tech Univ, Prague 16636 6, Czech Republic.
   [Baldisseri, A.; Borel, H.; Charvet, J. -L.; Gosset, J.; Pereira, H.; Silvestre, C.; Staley, F.] CEA Saclay, Dapnia, F-91191 Gif Sur Yvette, France.
   [Imrek, J.; Tarjan, P.; Vertesi, R.] Univ Debrecen, H-4010 Debrecen, Hungary.
   [Csanad, M.; Kiss, A.; Nagy, M. I.] Eotvos Lorand Univ, ELTE, H-1117 Budapest, Hungary.
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   [Pantuev, V.] Russian Acad Sci, Inst Nucl Res, Moscow 117312, Russia.
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   [Atomssa, E. T.; del Valle, Z. Conesa; d'Enterria, D.; Drapier, O.; Fleuret, F.; Gonin, M.; de Cassagnac, R. Granier; Rakotozafindrabe, A.; Tram, V-N.] Ecole Polytech, CNRS, Lab Leprince Ringuet, IN2P3, F-91128 Palaiseau, France.
   [Younus, I.] Lahore Univ Management Sci, Dept Phys, Lahore, Pakistan.
   [Enokizono, A.; Glenn, A.; Hartouni, E. P.; Heffner, M.; Klay, J.; Newby, J.; Soltz, R. A.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
   [Aidala, C.; Barnes, P. D.; Boissevain, J. G.; Brooks, M. L.; Butsyk, S.; Camacho, C. M.; Constantin, P.; Durham, J. M.; Grim, G.; Guo, L.; Jiang, X.; Kapustinsky, J.; Kunde, G. J.; Lee, D. M.; Leitch, M. J.; Liu, H.; Liu, M. X.; McGaughey, P. L.; Palounek, A. P. T.; Purwar, A. K.; Sondheim, W. E.; van Hecke, H. W.; You, Z.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
   [Roche, G.; Rosnet, P.] Univ Clermont Ferrand, CNRS, IN2P3, LPC, F-63177 Aubiere, France.
   [Christiansen, P.; Gustafsson, H. -A.; Haslum, E.; Oskarsson, A.; Rosendahl, S. S. E.; Stenlund, E.] Lund Univ, Dept Phys, SE-22100 Lund, Sweden.
   [D'Orazio, L.; Mignerey, A. C.; Richardson, E.] Univ Maryland, College Pk, MD 20742 USA.
   [Aidala, C.; Datta, A.; Kawall, D.] Univ Massachusetts, Dept Phys, Amherst, MA 01003 USA.
   [Aidala, C.] Univ Michigan, Dept Phys, Ann Arbor, MI 48109 USA.
   [Baumann, C.; Klein-Boesing, C.; Reygers, K.; Sahlmueller, B.; Wessels, J.; Zaudtke, O.] Univ Munster, Inst Kernphys, D-48149 Munster, Germany.
   [Ben-Benjamin, J.; Broxmeyer, D.; Caringi, A.; Fadem, B.; Harper, C.; Lichtenwalner, P.; Motschwiller, S.; Sodre, T.] Muhlenberg Coll, Allentown, PA 18104 USA.
   [Joo, K. S.; Kim, D. H.; Moon, H. J.] Myongji Univ, Yongin 449728, Kyonggido, South Korea.
   [Fusayasu, T.; Tanaka, Y.] Nagasaki Inst Appl Sci, Nagasaki 8510193, Japan.
   [Bassalleck, B.; Fields, D. E.; Malik, M. D.; Rak, J.; Thomas, T. L.; Younus, I.] Univ New Mexico, Albuquerque, NM 87131 USA.
   [Al-Bataineh, H.; Al-Ta'ani, H.; Dharmawardane, K. V.; Kyle, G. S.; Liu, H.; Papavassiliou, V.; Pate, S. F.; Stepanov, M.; Tennant, E.; Wang, X. R.] New Mexico State Univ, Las Cruces, NM 88003 USA.
   [Frantz, J. E.] Ohio Univ, Dept Phys & Astron, Athens, OH 45701 USA.
   [Awes, T. C.; Batsouli, S.; Cianciolo, V.; Efremenko, Y. V.; Enokizono, A.; Hornback, D.; Read, K. F.; Silvermyr, D.; Stankus, P. W.; Young, G. R.; Zhang, C.] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
   [Jouan, D.; Suire, C.] Univ Paris 11, IPN Orsay, CNRS IN2P3, F-91406 Orsay, France.
   [Han, R.; Mao, Y.; You, Z.] Peking Univ, Beijing 100871, Peoples R China.
   [Baublis, V.; Ivanischev, D.; Khanzadeev, A.; Kochenda, L.; Komkov, B.; Kotov, D.; Riabov, V.; Riabov, Y.; Samsonov, V.; Vznuzdaev, E.] Petersburg Nucl Phys Inst, PNPI, Gatchina 188300, Leningrad Regio, Russia.
   [Akiba, Y.; Aoki, K.; Aramaki, Y.; Asai, J.; Dairaku, S.; En'yo, H.; Fujiwara, K.; Fukao, Y.; Goto, Y.; Hashimoto, K.; Horaguchi, T.; Ichihara, T.; Ichimiya, R.; Iinuma, H.; Ikeda, Y.; Imai, K.; Ishihara, M.; Isobe, T.; Kametani, S.; Karatsu, K.; Kasai, M.; Kawashima, M.; Kurita, K.; Kurosawa, M.; Mao, Y.; Miki, K.; Miyachi, Y.; Murata, J.; Nakagawa, I.; Nakamura, K. R.; Nakamura, T.; Nakano, K.; Onuki, Y.; Ouchida, M.; Rykov, V. L.; Saito, N.; Sakashita, K.; Shibata, T. -A.; Shoji, K.; Taketani, A.; Tanida, K.; Togawa, M.; Torii, H.; Watanabe, Y.; Yokkaichi, S.] RIKEN, Nishina Ctr Accelerator Based Sci, Wako, Saitama 3510198, Japan.
   [Akiba, Y.; Bathe, S.; Boyle, K.; Bunce, G.; Deshpande, A.; En'yo, H.; Fields, D. E.; Goto, Y.; Perdekamp, M. Grosse; Ichihara, T.; Kamihara, N.; Kawall, D.; Liebing, P.; Nakagawa, I.; Okada, K.; Saito, N.; Seidl, R.; Taketani, A.; Tanida, K.; Togawa, M.; Watanabe, Y.; Xie, W.; Yokkaichi, S.] Brookhaven Natl Lab, RIKEN BNL Res Ctr, Upton, NY 11973 USA.
   [Hashimoto, K.; Ikeda, Y.; Kasai, M.; Kawashima, M.; Kurita, K.; Murata, J.] Rikkyo Univ, Dept Phys, Toshima Ku, Tokyo 1718501, Japan.
   [Berdnikov, A.; Berdnikov, Y.] St Petersburg State Polytech Univ, St Petersburg 195251, Russia.
   [Dietzsch, O.; Donadelli, M.; Leite, M. A. L.; Lenzi, B.; Silva, C. L.; Takagui, E. M.] Univ Sao Paulo, Inst Fis, BR-05315970 Sao Paulo, Brazil.
   [Kim, E.; Lee, T.; Park, J.; Tanida, K.] Seoul Natl Univ, Seoul, South Korea.
   [Ajitanand, N. N.; Alexander, J.; Chung, P.; Gong, X.; Holzmann, W.; Issah, M.; Jia, J.; Lacey, R.; Taranenko, A.; Wei, R.] SUNY Stony Brook, Dept Chem, Stony Brook, NY 11794 USA.
   [Apadula, N.; Averbeck, R.; Bannier, B.; Bennett, R.; Boyle, K.; Campbell, S.; Castera, P.; Chen, C. -H.; Citron, Z.; Connors, M.; Dahms, T.; Deshpande, A.; Dion, A.; Drees, A.; Durham, J. M.; Frantz, J. E.; Gal, C.; Gong, H.; Hemmick, T. K.; Jacak, B. V.; Kamin, J.; Kaneti, S.; Kline, P.; Lee, S. H.; Lewis, B.; Manion, A.; McCumber, M.; Means, N.; Nguyen, M.; Pantuev, V.; Petti, R.; Proissl, M.; Sahlmueller, B.; Savastio, M.; Sun, J.; Taneja, S.; Themann, H.; Toia, A.] SUNY Stony Brook, Dept Phys & Astron, Stony Brook, NY 11794 USA.
   [Aphecetche, L.; Henni, A. Hadj] Univ Nantes, SUBATECH, Ecole Mines Nantes, CNRS IN2P3, F-44307 Nantes, France.
   [Garishvili, I.; Hamblen, J.; Hornback, D.; John, D.; Kwon, Y.; Read, K. F.; Sakashita, K.; Sorensen, S. P.] Univ Tennessee, Knoxville, TN 37996 USA.
   [Miyachi, Y.; Nakano, K.; Shibata, T. -A.] Tokyo Inst Technol, Dept Phys, Meguro Ku, Tokyo 1528551, Japan.
   [Chujo, T.; Esumi, S.; Horaguchi, T.; Ikeda, Y.; Inaba, M.; Konno, M.; Masui, H.; Miake, Y.; Miki, K.; Niida, T.; Oka, M.; Sakai, S.; Sato, T.; Shimomura, M.; Tanabe, R.; Tomita, Y.; Watanabe, K.] Univ Tsukuba, Inst Phys, Tsukuba, Ibaraki 305, Japan.
   [Appelt, E.; Belmont, R.; Danchev, I.; Greene, S. V.; Huang, S.; Issah, M.; Love, B.; Maguire, C. F.; Mukhopadhyay, D.; Roach, D.; Valle, H.; Velkovska, J.] Vanderbilt Univ, Nashville, TN 37235 USA.
   [Kikuchi, J.; Sano, S.; Yamaguchi, Y. L.] Waseda Univ, Adv Res Inst Sci & Engn, Shinjuku Ku, Tokyo 1620044, Japan.
   [Dubey, A. K.; Fraenkel, Z.; Kozlov, A.; Milov, A.; Naglis, M.; Ravinovich, I.; Sharma, D.; Tserruya, I.] Weizmann Inst Sci, IL-76100 Rehovot, Israel.
   [Csorgo, T.; Nagy, M. I.; Ster, A.; Sziklai, J.; Vertesi, R.] Hungarian Acad Sci, Wigner Res Ctr Phys, Inst Particle & Nucl Phys, RMKI, H-1525 Budapest, Hungary.
   [Bhom, J. H.; Bok, J. S.; Chang, B. S.; Choi, I. J.; Kang, J. H.; Kim, D. J.; Kim, S. H.; Kwon, Y.; Lim, S. H.] Yonsei Univ, IPAP, Seoul 120749, South Korea.
RP Adare, A (reprint author), Abilene Christian Univ, Abilene, TX 79699 USA.
EM jacak@skipper.physics.sunysb.edu
RI Tomasek, Lukas/G-6370-2014; Blau, Dmitry/H-4523-2012; Durum,
   Artur/C-3027-2014; Sorensen, Soren /K-1195-2016; Yokkaichi,
   Satoshi/C-6215-2017; Taketani, Atsushi/E-1803-2017; Semenov,
   Vitaliy/E-9584-2017; Dahms, Torsten/A-8453-2015; En'yo,
   Hideto/B-2440-2015; Hayano, Ryugo/F-7889-2012; HAMAGAKI,
   HIDEKI/G-4899-2014
OI Tomasek, Lukas/0000-0002-5224-1936; Sorensen, Soren
   /0000-0002-5595-5643; Taketani, Atsushi/0000-0002-4776-2315; Dahms,
   Torsten/0000-0003-4274-5476; Hayano, Ryugo/0000-0002-1214-7806; 
FU Office of Nuclear Physics in the Office of Science of the Department of
   Energy; National Science Foundation; Renaissance Technologies LLC;
   Abilene Christian University Research Council; Research Foundation of
   SUNY; Dean of the College of Arts and Sciences; Vanderbilt University
   (USA); Ministry of Education, Culture, Sports, Science, and Technology;
   Japan Society for the Promotion of Science (Japan); Conselho Nacional de
   Desenvolvimento Cientifico e Tecnologico; Fundacao de Amparo a Pesquisa
   do Estado de Sao Paulo (Brazil); Natural Science Foundation of China
   (People's Republic of China); Ministry of Education, Youth and Sports
   (Czech Republic); Centre National de la Recherche Scientifique,
   Commissariat a l'Energie Atomique; Institut National de Physique
   Nucleaire et de Physique des Particules (France); Bundesministerium fur
   Bildung und Forschung; Deutscher Akademischer Austausch Dienst;
   Alexander von Humboldt Stiftung (Germany); Hungarian National Science
   Fund; OTKA (Hungary); Department of Atomic Energy and Department of
   Science and Technology (India); Israel Science Foundation (Israel);
   National Research Foundation; WCU program of the Ministry Education
   Science and Technology (Korea); Ministry of Education and Science;
   Russian Academy of Sciences; Federal Agency of Atomic Energy (Russia);
   VR; Wallenberg Foundation (Sweden); US Civilian Research and Development
   Foundation for the Independent States of the Former Soviet Union;
   Hungarian American Enterprise Scholarship Fund; US-Israel Binational
   Science Foundation
FX We thank the staff of the Collider-Accelerator and Physics Departments
   at Brookhaven National Laboratory and the staff of the other PHENIX
   participating institutions for their vital contributions. We also thank
   Ramona Vogt, Ivan Vitev, and Rishi Sharma for useful discussions and
   theoretical calculations. We acknowledge support from the Office of
   Nuclear Physics in the Office of Science of the Department of Energy,
   the National Science Foundation, a sponsored research grant from
   Renaissance Technologies LLC, Abilene Christian University Research
   Council, Research Foundation of SUNY, and Dean of the College of Arts
   and Sciences, Vanderbilt University (USA); Ministry of Education,
   Culture, Sports, Science, and Technology and the Japan Society for the
   Promotion of Science (Japan); Conselho Nacional de Desenvolvimento
   Cientifico e Tecnologico and Fundacao de Amparo a Pesquisa do Estado de
   Sao Paulo (Brazil); Natural Science Foundation of China (People's
   Republic of China); Ministry of Education, Youth and Sports (Czech
   Republic); Centre National de la Recherche Scientifique, Commissariat a
   l'Energie Atomique, and Institut National de Physique Nucleaire et de
   Physique des Particules (France); Bundesministerium fur Bildung und
   Forschung, Deutscher Akademischer Austausch Dienst, and Alexander von
   Humboldt Stiftung (Germany); Hungarian National Science Fund, OTKA
   (Hungary); Department of Atomic Energy and Department of Science and
   Technology (India); Israel Science Foundation (Israel); National
   Research Foundation and WCU program of the Ministry Education Science
   and Technology (Korea); Ministry of Education and Science, Russian
   Academy of Sciences, Federal Agency of Atomic Energy (Russia); VR and
   Wallenberg Foundation (Sweden); the US Civilian Research and Development
   Foundation for the Independent States of the Former Soviet Union; the
   Hungarian American Enterprise Scholarship Fund; and the US-Israel
   Binational Science Foundation.
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J9 PHYS REV C
JI Phys. Rev. C
PD APR 25
PY 2013
VL 87
IS 4
AR 044909
DI 10.1103/PhysRevC.87.044909
PG 13
WC Physics, Nuclear
SC Physics
GA 134AK
UT WOS:000318181800004
ER

PT J
AU Chen, C
   Chang, L
   Roberts, CD
   Schmidt, SM
   Wan, SL
   Wilson, DJ
AF Chen, Chen
   Chang, Lei
   Roberts, Craig D.
   Schmidt, Sebastian M.
   Wan, Shaolong
   Wilson, David J.
TI Features and flaws of a contact interaction treatment of the kaon
SO PHYSICAL REVIEW C
LA English
DT Article
ID ELECTROMAGNETIC FORM-FACTORS; JONA-LASINIO MODEL; CHARGE RADIUS; QUANTUM
   CHROMODYNAMICS; EXCLUSIVE PROCESSES; STANDARD MODEL; PION; QCD; THEOREM;
   DECAYS
AB Elastic and semileptonic transition form factors for the kaon and pion are calculated using the leading order in a global-symmetry-preserving truncation of the Dyson-Schwinger equations and a momentum-independent form for the associated kernels in the gap and Bethe-Salpeter equations. The computed form factors are compared both with those obtained using the same truncation but an interaction that preserves the one-loop renormalization-group behavior of QCD and with data. The comparisons show that in connection with observables revealed by probes with vertical bar Q(2)vertical bar less than or similar to M-2, where M approximate to 0.4 GeV is an infrared value of the dressed-quark mass, results obtained using a symmetry-preserving regularization of the contact interaction are not realistically distinguishable from those produced by more sophisticated kernels, and available data on kaon form factors do not extend into the domain whereupon one could distinguish among the interactions. The situation differs if one includes the domain Q(2) > M-2. Thereupon, a fully consistent treatment of the contact interaction produces form factors that are typically harder than those obtained with QCD renormalization-group-improved kernels. Among other things also described are a Ward identity for the inhomogeneous scalar vertex, similarity between the charge distribution of a dressed u quark in the K+ and that of the dressed u quark in the pi(+), and reflections upon the point whereat one might begin to see perturbative behavior in the pion form factor. Interpolations of the form factors are provided, which should assist in working to chart the interaction between light quarks by explicating the impact on hadron properties of differing assumptions about the behavior of the Bethe-Salpeter kernel. DOI: 10.1103/PhysRevC.87.045207
C1 [Chen, Chen; Wan, Shaolong] Univ Sci & Technol China, Inst Theoret Phys, Hefei 230026, Peoples R China.
   [Chen, Chen; Wan, Shaolong] Univ Sci & Technol China, Dept Modern Phys, Hefei 230026, Peoples R China.
   [Chen, Chen; Roberts, Craig D.] Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA.
   [Chen, Chen; Roberts, Craig D.] IIT, Dept Phys, Chicago, IL 60616 USA.
   [Chang, Lei] Forschungszentrum Julich, Inst Kernphys, D-52425 Julich, Germany.
   [Schmidt, Sebastian M.] Forschungszentrum Julich, Inst Adv Simulat, D-52425 Julich, Germany.
   [Schmidt, Sebastian M.] JARA, D-52425 Julich, Germany.
   [Wilson, David J.] Old Dominion Univ, Dept Phys, Norfolk, VA 23529 USA.
RP Chen, C (reprint author), Univ Sci & Technol China, Inst Theoret Phys, Hefei 230026, Peoples R China.
RI Chen, Chen/H-2756-2015; 
OI Wilson, David/0000-0003-2364-1161
FU China Scholarship Council [2010634019]; Forschungszentrum Julich GmbH;
   U.S. Department of Energy, Office of Nuclear Physics [DE-AC02-06CH11357,
   DE-SC0006765]
FX We are grateful for valuable input from A. Bashir, I. C. Cloet, J.
   Segovia Gonzales, and P. C. Tandy. C. Chen acknowledges the support of
   the China Scholarship Council (File No. 2010634019). This work was
   otherwise supported by Forschungszentrum Julich GmbH and the U.S.
   Department of Energy, Office of Nuclear Physics, Contracts No.
   DE-AC02-06CH11357 and No. DE-SC0006765.
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SN 0556-2813
J9 PHYS REV C
JI Phys. Rev. C
PD APR 25
PY 2013
VL 87
IS 4
AR 045207
DI 10.1103/PhysRevC.87.045207
PG 15
WC Physics, Nuclear
SC Physics
GA 134AK
UT WOS:000318181800005
ER

PT J
AU Falk, K
   Regan, SP
   Vorberger, J
   Crowley, BJB
   Glenzer, SH
   Hu, SX
   Murphy, CD
   Radha, PB
   Jephcoat, AP
   Wark, JS
   Gericke, DO
   Gregori, G
AF Falk, K.
   Regan, S. P.
   Vorberger, J.
   Crowley, B. J. B.
   Glenzer, S. H.
   Hu, S. X.
   Murphy, C. D.
   Radha, P. B.
   Jephcoat, A. P.
   Wark, J. S.
   Gericke, D. O.
   Gregori, G.
TI Comparison between x-ray scattering and velocity-interferometry
   measurements from shocked liquid deuterium
SO PHYSICAL REVIEW E
LA English
DT Article
ID EQUATION-OF-STATE; INERTIAL CONFINEMENT FUSION; GIANT PLANETS; FLUID
   HYDROGEN; DIRECT-DRIVE; HIGH-DENSITY; PLASMAS; INTERIORS; OMEGA;
   PERFORMANCE
AB The equation of state of light elements is essential to understand the structure of Jovian planets and inertial confinement fusion research. The Omega laser was used to drive a planar shock wave in the cryogenically cooled deuterium, creating warm dense matter conditions. X-ray scattering was used to determine the spectrum near the boundary of the collective and noncollective scattering regimes using a narrow band x-ray source in backscattering geometry. Our scattering spectra are thus sensitive to the individual electron motion as well as the collective plasma behavior and provide a measurement of the electron density, temperature, and ionization state. Our data are consistent with velocity-interferometry measurements previously taken on the same shocked deuterium conditions and presented by K. Falk et al. [High Energy Density Phys. 8, 76 (2012)]. This work presents a comparison of the two diagnostic systems and offers a detailed discussion of challenges encountered. DOI: 10.1103/PhysRevE.87.043112
C1 [Falk, K.; Crowley, B. J. B.; Murphy, C. D.; Wark, J. S.; Gregori, G.] Univ Oxford, Dept Phys, Clarendon Lab, Oxford OX1 3PU, England.
   [Falk, K.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
   [Regan, S. P.; Hu, S. X.; Radha, P. B.] Univ Rochester, Laser Energet Lab, Rochester, NY 14623 USA.
   [Vorberger, J.; Gericke, D. O.] Univ Warwick, Dept Phys, Ctr Fus Space & Astrophys, Coventry CV4 7AL, W Midlands, England.
   [Crowley, B. J. B.] Aldermarston, AWE PLC, Reading RG7 4PR, Berks, England.
   [Glenzer, S. H.] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA.
   [Murphy, C. D.] Univ Edinburgh, SUPA, Sch Phys & Astron, Edinburgh EH9 3JZ, Midlothian, Scotland.
   [Jephcoat, A. P.] Harwell Sci & Innovat Campus, Diamond Light Source, Chilton OX11 0DE, England.
   [Jephcoat, A. P.] Univ Oxford, Dept Earth Sci, Oxford OX1 3PR, England.
RP Falk, K (reprint author), Univ Oxford, Dept Phys, Clarendon Lab, Oxford OX1 3PU, England.
RI Hu, Suxing/A-1265-2007; Vorberger, Jan/D-9162-2015; Falk,
   Katerina/D-2369-2017; 
OI Hu, Suxing/0000-0003-2465-3818; Falk, Katerina/0000-0001-5975-776X;
   Crowley, Basil/0000-0001-9226-6006
FU EPSRC [EP/G007187/1, EP/D062837]; HiPER; US Department of Energy, Office
   of Inertial Confinement Fusion [DE-FC52-08NA28302]
FX The work of K. F., C. D. M., J.S.W., and G. G. was supported by EPSRC
   (EP/G007187/1) and HiPER funds. J.V. and D.O.G. were supported by EPSRC
   Grant No. EP/D062837. Support by the US Department of Energy, Office of
   Inertial Confinement Fusion under cooperative Agreement No.
   DE-FC52-08NA28302, is also acknowledged.
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PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1539-3755
J9 PHYS REV E
JI Phys. Rev. E
PD APR 25
PY 2013
VL 87
IS 4
AR 043112
DI 10.1103/PhysRevE.87.043112
PG 8
WC Physics, Fluids & Plasmas; Physics, Mathematical
SC Physics
GA 134CE
UT WOS:000318186500008
PM 23679534
ER

PT J
AU Aad, G
   Abajyan, T
   Abbott, B
   Abdallah, J
   Khalek, SA
   Abdelalim, AA
   Abdinov, O
   Aben, R
   Abi, B
   Abolins, M
   AbouZeid, OS
   Abramowicz, H
   Abreu, H
   Ochoa, MI
   Acharya, BS
   Adamczyk, L
   Adams, DL
   Addy, TN
   Adelman, J
   Adomeit, S
   Adragna, P
   Adye, T
   Aefsky, S
   Aguilar-Saavedra, JA
   Agustoni, M
   Ahlen, SP
   Ahles, F
   Ahmad, A
   Ahsan, M
   Aielli, G
   Akesson, TPA
   Akimoto, G
   Akimov, AV
   Alam, MA
   Albert, J
   Albrand, S
   Aleksa, M
   Aleksandrov, IN
   Alessandria, F
   Alexa, C
   Alexander, G
   Alexandre, G
   Alexopoulos, T
   Alhroob, M
   Aliev, M
   Alimonti, G
   Alison, J
   Allbrooke, BMM
   Allison, LJ
   Allport, PP
   Allwood-Spiers, SE
   Almond, J
   Aloisio, A
   Alon, R
   Alonso, A
   Alonso, F
   Altheimer, A
   Gonzalez, BA
   Alviggi, MG
   Amako, K
   Amelung, C
   Ammosov, VV
   Dos Santos, SPA
   Amorim, A
   Amoroso, S
   Amram, N
   Anastopoulos, C
   Ancu, LS
   Andari, N
   Andeen, T
   Anders, CF
   Anders, G
   Anderson, KJ
   Andreazza, A
   Andrei, V
   Andrieux, ML
   Anduaga, XS
   Angelidakis, S
   Anger, P
   Angerami, A
   Anghinolfi, F
   Anisenkov, A
   Anjos, N
   Annovi, A
   Antonaki, A
   Antonelli, M
   Antonov, A
   Antos, J
   Anulli, F
   Aoki, M
   Aoun, S
   Bella, LA
   Apolle, R
   Arabidze, G
   Aracena, I
   Arai, Y
   Arce, ATH
   Arfaoui, S
   Arguin, JF
   Argyropoulos, S
   Arik, E
   Arik, M
   Armbruster, AJ
   Arnaez, O
   Arnal, V
   Artamonov, A
   Artoni, G
   Arutinov, D
   Asai, S
   Ask, S
   Asman, B
   Asner, D
   Asquith, L
   Assamagan, K
   Astbury, A
   Atkinson, M
   Aubert, B
   Auerbach, B
   Auge, E
   Augsten, K
   Aurousseau, M
   Avolio, G
   Axen, D
   Azuelos, G
   Azuma, Y
   Baak, MA
   Baccaglioni, G
   Bacci, C
   Bach, AM
   Bachacou, H
   Bachas, K
   Backes, M
   Backhaus, M
   Mayes, JB
   Badescu, E
   Bagnaia, P
   Bai, Y
   Bailey, DC
   Bain, T
   Baines, JT
   Baker, OK
   Baker, S
   Balek, P
   Balli, F
   Banas, E
   Banerjee, P
   Banerjee, S
   Banfi, D
   Bangert, A
   Bansal, V
   Bansil, HS
   Barak, L
   Baranov, SP
   Barber, T
   Barberio, EL
   Barberis, D
   Barbero, M
   Bardin, DY
   Barillari, T
   Barisonzi, M
   Barklow, T
   Barlow, N
   Barnett, BM
   Barnett, RM
   Baroncelli, A
   Barone, G
   Barr, AJ
   Barreiro, F
   Costa, JBG
   Bartoldus, R
   Barton, AE
   Bartsch, V
   Basye, A
   Bates, RL
   Batkova, L
   Batley, JR
   Battaglia, A
   Battistin, M
   Bauer, F
   Bawa, HS
   Beale, S
   Beau, T
   Beauchemin, PH
   Beccherle, R
   Bechtle, P
   Beck, HP
   Becker, K
   Becker, S
   Beckingham, M
   Becks, KH
   Beddall, AJ
   Beddall, A
   Bedikian, S
   Bednyakov, VA
   Bee, CP
   Beemster, LJ
   Begel, M
   Harpaz, SB
   Behera, PK
   Beimforde, M
   Belanger-Champagne, C
   Bell, PJ
   Bell, WH
   Bella, G
   Bellagamba, L
   Bellomo, M
   Belloni, A
   Beloborodova, O
   Belotskiy, K
   Beltramello, O
   Benary, O
   Benchekroun, D
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   Benhammou, Y
   Noccioli, EB
   Garcia, JAB
   Benjamin, DP
   Benoit, M
   Bensinger, JR
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   Bentvelsen, S
   Berge, D
   Kuutmann, EB
   Berger, N
   Berghaus, F
   Berglund, E
   Beringer, J
   Bernat, P
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   Bertolucci, F
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   Bierwagen, K
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   Bingul, A
   Bini, C
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   Black, JE
   Black, KM
   Blair, RE
   Blanchard, JB
   Blazek, T
   Bloch, I
   Blocker, C
   Blocki, J
   Blum, W
   Blumenschein, U
   Bobbink, GJ
   Bobrovnikov, VS
   Bocchetta, SS
   Bocci, A
   Boddy, CR
   Boehler, M
   Boek, J
   Boek, TT
   Boelaert, N
   Bogaerts, JA
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   Bogouch, A
   Bohm, C
   Bohm, J
   Boisvert, V
   Bold, T
   Boldea, V
   Bolnet, NM
   Bomben, M
   Bona, M
   Boonekamp, M
   Bordoni, S
   Borer, C
   Borisov, A
   Borissov, G
   Borjanovic, I
   Borri, M
   Borroni, S
   Bortfeldt, J
   Bortolotto, V
   Bos, K
   Boscherini, D
   Bosman, M
   Boterenbrood, H
   Bouchami, J
   Boudreau, J
   Bouhova-Thacker, EV
   Boumediene, D
   Bourdarios, C
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   Boyd, J
   Boyko, IR
   Bozovic-Jelisavcic, I
   Bracinik, J
   Branchini, P
   Brandt, A
   Brandt, G
   Brandt, O
   Bratzler, U
   Brau, B
   Brau, JE
   Braun, HM
   Brazzale, SF
   Brelier, B
   Bremer, J
   Brendlinger, K
   Brenner, R
   Bressler, S
   Bristow, TM
   Britton, D
   Brochu, FM
   Brock, I
   Brock, R
   Broggi, F
   Bromberg, C
   Bronner, J
   Brooijmans, G
   Brooks, T
   Brooks, WK
   Brown, G
   de Renstrom, PAB
   Bruncko, D
   Bruneliere, R
   Brunet, S
   Bruni, A
   Bruni, G
   Bruschi, M
   Bryngemark, L
   Buanes, T
   Buat, Q
   Bucci, F
   Buchanan, J
   Buchholz, P
   Buckingham, RM
   Buckley, AG
   Buda, SI
   Budagov, IA
   Budick, B
   Buscher, V
   Bugge, L
   Bulekov, O
   Bundock, AC
   Bunse, M
   Buran, T
   Burckhart, H
   Burdin, S
   Burgess, T
   Burke, S
   Busato, E
   Bussey, P
   Buszello, CP
   Butler, B
   Butler, JM
   Buttar, CM
   Butterworth, JM
   Buttinger, W
   Byszewski, M
   Urban, SC
   Caforio, D
   Cakir, O
   Calafiura, P
   Calderini, G
   Calfayan, P
   Calkins, R
   Caloba, LP
   Caloi, R
   Calvet, D
   Calvet, S
   Toro, RC
   Camarri, P
   Cameron, D
   Caminada, LM
   Armadans, RC
   Campana, S
   Campanelli, M
   Canale, V
   Canelli, F
   Canepa, A
   Cantero, J
   Cantrill, R
   Garrido, MDMC
   Caprini, I
   Caprini, M
   Capriotti, D
   Capua, M
   Caputo, R
   Cardarelli, R
   Carli, T
   Carlino, G
   Carminati, L
   Caron, S
   Carquin, E
   Carrillo-Montoya, GD
   Carter, AA
   Carter, JR
   Carvalho, J
   Casadei, D
   Casado, MP
   Cascella, M
   Caso, C
   Hernandez, AMC
   Castaneda-Miranda, E
   Gimenez, VC
   Castro, NF
   Cataldi, G
   Catastini, P
   Catinaccio, A
   Catmore, JR
   Cattai, A
   Cattani, G
   Caughron, S
   Cavaliere, V
   Cavalleri, P
   Cavalli, D
   Cavalli-Sforza, M
   Cavasinni, V
   Ceradini, F
   Cerqueira, AS
   Cerri, A
   Cerrito, L
   Cerutti, F
   Cetin, SA
   Chafaq, A
   Chakraborty, D
   Chalupkova, I
   Chan, K
   Chang, P
   Chapleau, B
   Chapman, JD
   Chapman, JW
   Charlton, DG
   Chavda, V
   Barajas, CAC
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   Chekanov, S
   Chekulaev, SV
   Chelkov, GA
   Chelstowska, MA
   Chen, C
   Chen, H
   Chen, S
   Chen, X
   Chen, Y
   Cheng, Y
   Cheplakov, A
   El Moursli, RC
   Chernyatin, V
   Cheu, E
   Cheung, SL
   Chevalier, L
   Chiefari, G
   Chikovani, L
   Childers, JT
   Chilingarov, A
   Chiodini, G
   Chisholm, AS
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   Choudalakis, G
   Chouridou, S
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   Cinca, D
   Cindro, V
   Ciocio, A
   Cirilli, M
   Cirkovic, P
   Citron, ZH
   Citterio, M
   Ciubancan, M
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   Clark, PJ
   Clarke, RN
   Cleland, W
   Clemens, JC
   Clement, B
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   Consonni, SM
   Consorti, V
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   Cortiana, G
   Costa, G
   Costa, MJ
   Costanzo, D
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   Da Via, C
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   Davidson, R
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   Daya-Ishmukhametova, RK
   De, K
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   de Jong, P
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   Diehl, EB
   Dietrich, J
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CA ATLAS Collaboration
TI Search for single b*-quark production with the ATLAS detector at root
   s=7 TeV
SO PHYSICS LETTERS B
LA English
DT Article
DE ATLAS; b*; Single top-quark; Excited quark
ID PRODUCTION CROSS-SECTION; TOP-QUARK; PP COLLISIONS; PAIR PRODUCTION;
   EXCITED QUARKS; PHYSICS; CHANNEL; BOSON; HERA
AB The results of a search for an excited bottom-quark b* in pp collisions at root s = 7 TeV, using 4.7 fb(-1) of data collected by the ATLAS detector at the LHC are presented. In the model studied, a single b*-quark is produced through a chromomagnetic interaction and subsequently decays to a W boson and a top quark. The search is performed in the dilepton and lepton + jets final states, which are combined to set limits on b*-quark couplings for a range of b*-quark masses. For a benchmark with unit size chromomagnetic and Standard Model-like electroweak b* couplings, b* quarks with masses less than 870 GeV are excluded at the 95% credibility level. (C) 2013 CERN. Published by Elsevier B.V. All rights reserved.
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   [Bai, Y.; Fang, Y.; Jin, S.; Lu, F.; Ouyang, Q.; Ruan, X.; Shan, L. Y.; Wang, J.; Xu, D.; Yao, L.; Zhuang, X.] Chinese Acad Sci, Inst High Energy Phys, Beijing, Peoples R China.
   [Han, L.; Jiang, Y.; Li, B.; Li, S.; Liu, J. B.; Liu, M.; Liu, Y.; Peng, H.; Wu, Y.; Xu, C.; Xu, L.; Zhao, Z.; Zhu, Y.] Univ Sci & Technol China, Dept Modern Phys, Hefei, Anhui, Peoples R China.
   [Chen, S.] Nanjing Univ, Dept Phys, Nanjing, Jiangsu, Peoples R China.
   [Feng, C.; Ge, P.; Meng, Z.; Zhang, X.; Zhu, C. G.] Shandong Univ, Sch Phys, Jinan, Shandong, Peoples R China.
   [Yang, H.] Shanghai Jiao Tong Univ, Dept Phys, Shanghai 200030, Peoples R China.
   [Boumediene, D.; Busato, E.; Calvet, D.; Calvet, S.; Toro, R. Camacho; Cinca, D.; Donini, J.; Dubreuil, E.; Ghodbane, N.; Gris, Ph; Guicheney, C.; Liao, H.; Pallin, D.; Hernandez, D. Paredes; Podlyski, F.; Santoni, C.; Valery, L.; Vazeille, F.] Univ Clermont Ferrand, Phys Corpusculaire Lab, Clermont Ferrand, France.
   [Boumediene, D.; Busato, E.; Calvet, D.; Calvet, S.; Toro, R. Camacho; Cinca, D.; Donini, J.; Dubreuil, E.; Ghodbane, N.; Gris, Ph; Guicheney, C.; Liao, H.; Pallin, D.; Hernandez, D. Paredes; Podlyski, F.; Santoni, C.; Valery, L.; Vazeille, F.] Univ Clermont Ferrand, Clermont Ferrand, France.
   [Boumediene, D.; Busato, E.; Calvet, D.; Calvet, S.; Toro, R. Camacho; Cinca, D.; Donini, J.; Dubreuil, E.; Ghodbane, N.; Gris, Ph; Guicheney, C.; Liao, H.; Pallin, D.; Hernandez, D. Paredes; Podlyski, F.; Santoni, C.; Valery, L.; Vazeille, F.] Univ Clermont Ferrand, Photochim Mol & Macromol Lab, CNRS, IN2P3, F-63177 Clermont Ferrand, France.
   [Altheimer, A.; Andeen, T.; Angerami, A.; Bain, T.; Brooijmans, G.; Chen, Y.; Dodd, J.; Guo, J.; Hu, D.; Hughes, E. W.; Nikiforou, N.; Parsons, J. A.; Penson, A.; Perez, K.; Reale, V. Perez; Scherzer, M. I.; Spousta, M.; Thompson, E. N.; Tian, F.; Tuts, P. M.; Urbaniec, D.; Williams, E.; Willis, W.; Wulf, E.; Zivkovic, L.] Columbia Univ, Nevis Lab, Irvington, NY USA.
   [Alonso, A.; Boelaert, N.; Dam, M.; Gregersen, K.; Hansen, J. R.; Hansen, J. B.; Hansen, J. D.; Hansen, P. H.; Heisterkamp, S.; Jakobsen, S.; Loevschall-Jensen, A. E.; Jez, P.; Joergensen, M. D.; Kadlecik, P.; Klinkby, E. B.; Lundquist, J.; Mackeprang, R.; Mehlhase, S.; Petersen, T. C.; Pingel, A.; Simonyan, M.; Thomsen, L. A.; Xella, S.] Univ Copenhagen, Niels Bohr Inst, Copenhagen, Denmark.
   [Capua, M.; Crosetti, G.; La Rotonda, L.; Lavorini, V.; Mastroberardino, A.; Morello, G.; Policicchio, A.; Salvatore, D.; Schioppa, M.; Susinno, G.; Tassi, E.] Ist Nazl Fis Nucl, Grp Coll Cosenza, Milan, Italy.
   [Capua, M.; Crosetti, G.; La Rotonda, L.; Lavorini, V.; Mastroberardino, A.; Morello, G.; Policicchio, A.; Salvatore, D.; Schioppa, M.; Susinno, G.; Tassi, E.] Univ Calabria, Dipartimento Fis, Arcavacata Di Rende, Italy.
   [Adamczyk, L.; Bold, T.; Dabrowski, W.; Dwuznik, M.; Grabowska-Bold, I.; Kisielewska, D.; Koperny, S.; Kowalski, T. Z.; Mindur, B.; Przybycien, M.] AGH Univ Sci & Technol, Fac Phys & Appl Comp Sci, Krakow, Poland.
   [Banas, E.; Blocki, J.; de Renstrom, P. A. Bruckman; Derendarz, D.; Gornicki, E.; Hajduk, Z.; Iwanski, W.; Kaczmarska, A.; Korcyl, K.; Malecki, Pa; Malecki, P.; Olszewski, A.; Olszowska, J.; Stanecka, E.; Staszewski, R.; Trzebinski, M.; Trzupek, A.; Turala, M.; Wolter, M. W.; Wosiek, B. K.; Wozniak, K. W.; Zabinski, B.; Zemla, A.] Polish Acad Sci, Henryk Niewodniczanski Inst Nucl Phys, Krakow, Poland.
   [Yagci, K. Dindar; Firan, A.; Hoffman, J.; Joffe, D.; Kama, S.; Kehoe, R.; Randle-Conde, A. S.; Rios, R. R.; Sekula, S. J.; Stroynowski, R.; Wang, H.; Ye, J.] So Methodist Univ, Dept Phys, Dallas, TX 75275 USA.
   [Ahsan, M.; Izen, J. M.; Lou, X.; Namasivayam, H.; Reeves, K.; Wong, W. C.] Univ Texas Dallas, Dept Phys, Richardson, TX 75083 USA.
   [Argyropoulos, S.; Kuutmann, E. Bergeaas; Bloch, I.; Borroni, S.; Dassoulas, J. A.; Dietrich, J.; Ferrara, V.; Fischer, G.; Friedrich, C.; Glazov, A.; Goebel, M.; Fajardo, L. S. Gomez; Da Costa, J. Goncalves Pinto Firmino; Grahn, K-J; Gregor, I. M.; Grohsjean, A.; Hiller, K. H.; Huettmann, A.; Belenguer, M. Jimenez; Johnert, S.; Katzy, J.; Kono, T.; Kuhl, T.; Lange, C.; Lobodzinska, E.; Ludwig, D.; Maettig, S.; Medinnis, M.; Moenig, K.; Naumann, T.; Cavalcanti, T. Perez; Petschull, D.; Piec, S. M.; Radescu, V.; Rubinskiy, I.; Sedov, G.; South, D.; Stanescu-Bellu, M.; Stanitzki, M. M.; Starovoitov, P.; Styles, N. A.; Tackmann, K.; Vankov, P.; Viti, M.; Wasicki, C.; Wildt, M. A.; Yatsenko, E.; Zhu, H.] DESY, Hamburg, Germany.
   [Argyropoulos, S.; Kuutmann, E. Bergeaas; Bloch, I.; Borroni, S.; Dassoulas, J. A.; Dietrich, J.; Ferrara, V.; Fischer, G.; Friedrich, C.; Glazov, A.; Goebel, M.; Fajardo, L. S. Gomez; Da Costa, J. Goncalves Pinto Firmino; Grahn, K-J; Gregor, I. M.; Grohsjean, A.; Hiller, K. H.; Huettmann, A.; Belenguer, M. Jimenez; Johnert, S.; Katzy, J.; Kono, T.; Kuhl, T.; Lange, C.; Lobodzinska, E.; Ludwig, D.; Maettig, S.; Medinnis, M.; Moenig, K.; Naumann, T.; Cavalcanti, T. Perez; Petschull, D.; Piec, S. M.; Radescu, V.; Rubinskiy, I.; Sedov, G.; South, D.; Stanescu-Bellu, M.; Stanitzki, M. M.; Starovoitov, P.; Styles, N. A.; Tackmann, K.; Vankov, P.; Viti, M.; Wasicki, C.; Wildt, M. A.; Yatsenko, E.; Zhu, H.] DESY, Zeuthen, Germany.
   [Bunse, M.; Esch, H.; Goessling, C.; Hirsch, F.; Jung, C. A.; Klingenberg, R.; Reisinger, I.] Tech Univ Dortmund, Inst Expt Phys 4, Dortmund, Germany.
   [Anger, P.; Czodrowski, P.; Friedrich, F.; Goepfert, T.; Kobel, M.; Leonhardt, K.; Mader, W. F.; Morgenstern, M.; Prudent, X.; Rudolph, C.; Schnoor, U.; Seifert, F.; Steinbach, P.; Straessner, A.; Vest, A.; Wahrmund, S.] Tech Univ Dresden, Inst Kern & Teilchenphys, D-01062 Dresden, Germany.
   [Arce, A. T. H.; Benjamin, D. P.; Bocci, A.; Ebenstein, W. L.; Fowler, A. J.; Ko, B. R.; Kotwal, A.; Kruse, M. K.; Oh, S. H.; Wang, C.] Duke Univ, Dept Phys, Durham, NC 27706 USA.
   [Bhimji, W.; Buckley, A. G.; Clark, P. J.; Debenedetti, C.; Harrington, R. D.; Korn, A.; Martin, V. J.; O'Brien, B. J.; Pino, S. A. Olivares; Schaelicke, A.; Selbach, K. E.; Smart, B. H.; Washbrook, A.; Wynne, B. M.] Univ Edinburgh, SUPA Sch Phys & Astron, Edinburgh, Midlothian, Scotland.
   [Annovi, A.; Antonelli, M.; Bilokon, H.; Curatolo, M.; Di Nardo, R.; Esposito, B.; Gatti, C.; Laurelli, P.; Maccarrone, G.; Sansoni, A.; Testa, M.; Vilucchi, E.; Volpi, G.] Ist Nazl Fis Nucl, Nazl Frascati Lab, I-00044 Frascati, Italy.
   [Aad, G.; Ahles, F.; Amoroso, S.; Barber, T.; Bernhard, R.; Boehler, M.; Bruneliere, R.; Christov, A.; Consorti, V.; Fehling-Kaschek, M.; Flechl, M.; Hartert, J.; Herten, G.; Horner, S.; Jakobs, K.; Janus, M.; Kononov, A. I.; Kopp, A. K.; Kuehn, S.; Lai, S.; Landgraf, U.; Lohwasser, K.; Ludwig, I.; Ludwig, J.; Madar, R.; Mahboubi, K.; Mohr, W.; Nilsen, H.; Parzefall, U.; Rammensee, M.; Rave, T. C.; Rurikova, Z.; Ruthmann, N.; Schmidt, E.; Schumacher, M.; Siegert, F.; Stoerig, K.; Sundermann, J. E.; Temming, K. K.; Thoma, S.; Tsiskaridze, V.; Ungaro, F. C.; Venturi, M.; Vivarelli, I.; von Radziewski, H.; Anh, T. Vu; Warsinsky, M.; Weiser, C.; Werner, M.; Winkelmann, S.; Xie, S.; Zimmermann, S.] Univ Freiburg, Fak Math & Phys, D-79106 Freiburg, Germany.
   [Abdelalim, A. A.; Alexandre, G.; Backes, M.; Barone, G.; Bell, P. J.; Bell, W. H.; Noccioli, E. Benhar; Bucci, F.; Clark, A.; Doglioni, C.; Ferrere, D.; Gadomski, S.; Gonzalez-Sevilla, S.; Goulette, M. P.; Iacobucci, G.; La Rosa, A.; Latour, B. Martin Dit; Mermod, P.; Herrera, C. Mora; Nektarijevic, S.; Nessi, M.; Nikolics, K.; Pasztor, G.; Picazio, A.; Pohl, M.; Rosbach, K.; Rosselet, L.; Wu, X.] Univ Geneva, Sect Phys, Geneva, Switzerland.
   [Barberis, D.; Beccherle, R.; Caso, C.; Darbo, G.; Parodi, A. Ferretto; Gagliardi, G.; Gemme, C.; Guido, E.; Morettini, P.; Osculati, B.; Parodi, F.; Passaggio, S.; Rossi, L. P.; Schiavi, C.] Ist Nazl Fis Nucl, Sez Genova, Milan, Italy.
   [Barberis, D.; Caso, C.; Parodi, A. Ferretto; Gagliardi, G.; Guido, E.; Osculati, B.; Parodi, F.; Schiavi, C.] Univ Genoa, Dipartimento Fis, Genoa, Italy.
   [Chikovani, L.; Tskhadadze, E. G.] Iv Javakhishvili Tbilisi State Univ, E Andronikashvili Inst Phys, Tbilisi, Rep of Georgia.
   [Djobava, T.; Khubua, J.; Mchedlidze, G.; Mosidze, M.] Tbilisi State Univ, Inst High Energy Phys, Tbilisi, Rep of Georgia.
   [Dueren, M.; Kreutzfeldt, K.; Stenzel, H.] Univ Giessen, Inst Phys 2, Giessen, Germany.
   [Allwood-Spiers, S. E.; Bates, R. L.; Britton, D.; Bussey, P.; Buttar, C. M.; Collins-Tooth, C.; D'Auria, S.; Doherty, T.; Doyle, A. T.; Edwards, N. C.; Ferrag, S.; Ferrando, J.; de Lima, D. E. Ferreira; Gemmell, A.; Gul, U.; Kar, D.; Kenyon, M.; Moraes, A.; O'Shea, V.; Barrera, C. Oropeza; Robson, A.; Saxon, D. H.; Smith, K. M.; St Denis, R. D.; Steele, G.; Thompson, A. S.; Wraight, K.; Wright, M.] Univ Glasgow, SUPA Sch Phys & Astron, Glasgow, Lanark, Scotland.
   [Bierwagen, K.; Blumenschein, U.; Brandt, O.; Evangelakou, D.; George, M.; Grosse-Knetter, J.; Guindon, S.; Hamer, M.; Hensel, C.; Keil, M.; Knue, A.; Kohn, E.; Krieger, N.; Kroeninger, K.; Lemmer, B.; Magradze, E.; Meyer, J.; Morel, J.; Nackenhorst, O.; Pashapour, S.; Quadt, A.; Roe, A.; Schorlemmer, A. L. S.; Serkin, L.; Shabalina, E.; Schroeder, T. Vazquez; Weingarten, J.] Univ Gottingen, Inst Phys 2, Gottingen, Germany.
   [Albrand, S.; Andrieux, M-L; Buat, Q.; Clement, B.; Collot, J.; Crepe-Renaudin, S.; Dechenaux, B.; Delemontex, T.; Delsart, P. A.; Genest, M. H.; Hostachy, J-Y; Laisne, E.; Ledroit-Guillon, F.; Lleres, A.; Lucotte, A.; Malek, F.; Stark, J.; Sun, X.; Trocme, B.; Weydert, C.] Univ Grenoble 1, Lab Phys Subatom & Cosmol, Grenoble, France.
   [Albrand, S.; Andrieux, M-L; Buat, Q.; Clement, B.; Collot, J.; Crepe-Renaudin, S.; Dechenaux, B.; Delemontex, T.; Delsart, P. A.; Genest, M. H.; Hostachy, J-Y; Laisne, E.; Ledroit-Guillon, F.; Lleres, A.; Lucotte, A.; Malek, F.; Stark, J.; Sun, X.; Trocme, B.; Weydert, C.] CNRS, IN2P3, Grenoble, France.
   [Albrand, S.; Andrieux, M-L; Buat, Q.; Clement, B.; Collot, J.; Crepe-Renaudin, S.; Dechenaux, B.; Delemontex, T.; Delsart, P. A.; Genest, M. H.; Hostachy, J-Y; Laisne, E.; Ledroit-Guillon, F.; Lleres, A.; Lucotte, A.; Malek, F.; Stark, J.; Sun, X.; Trocme, B.; Weydert, C.] Inst Natl Polytech Grenoble, F-38031 Grenoble, France.
   [Addy, T. N.; Harvey, A.; McFarlane, K. W.; Shin, T.; Vassilakopoulos, V. I.] Hampton Univ, Dept Phys, Hampton, VA 23668 USA.
   [da Costa, J. Barreiro Guimaraes; Belloni, A.; Catastini, P.; Conti, G.; Franklin, M.; Huth, J.; Jeanty, L.; Kagan, M.; Mateos, D. Lopez; Outschoorn, V. Martinez; Mercurio, K. M.; Mills, C.; Morii, M.; Skottowe, H. P.; Smith, B. C.; Yen, A. L.; della Porta, G. Zevi] Harvard Univ, Lab Particle Phys & Cosmol, Cambridge, MA 02138 USA.
   [Anders, G.; Andrei, V.; Davygora, Y.; Dietzsch, T. A.; Dunford, M.; Geweniger, C.; Hanke, P.; Henke, M.; Khomich, A.; Kluge, E. -E.; Lang, V. S.; Lendermann, V.; Lepold, F.; Meier, K.; Mueller, F.; Poddar, S.; Scharf, V.; Schultz-Coulon, H. -C.; Stamen, R.; Wessels, M.] Heidelberg Univ, Kirchhoff Inst Phys, Heidelberg, Germany.
   [Anders, C. F.; Karnevskiy, M.; Kasieczka, G.; Narayan, R.; Schaetzel, S.; Schmitt, S.; Schoening, A.] Heidelberg Univ, Inst Phys, Heidelberg, Germany.
   [Kugel, A.; Schroer, N.] Heidelberg Univ, ZITI Inst Tech Informat, Mannheim, Germany.
   [Nagasaka, Y.] Hiroshima Inst Technol, Fac Appl Informat Sci, Hiroshima, Japan.
   [Brunet, S.; Cwetanski, P.; Evans, H.; Gagnon, P.; Luehring, F.; Ogren, H.; Penwell, J.; Poveda, J.; Price, D.; Whittington, D.; Zieminska, D.] Indiana Univ, Dept Phys, Bloomington, IN 47405 USA.
   [Epp, B.; Jussel, P.; Kneringer, E.; Lukas, W.; Ritsch, E.] Leopold Franzens Univ, Inst Astro & Teilchenphys, Innsbruck, Austria.
   [Behera, P. K.; Halladjian, G.; Limper, M.; Mallik, U.; Mandrysch, R.; Pylypchenko, Y.; Zaidan, R.] Univ Iowa, Iowa City, IA USA.
   [Chen, C.; Cochran, J.; De Lorenzi, F.; Dudziak, F.; Krumnack, N.; Prell, S.; Ruiz-Martinez, A.; Shrestha, S.; Yamamoto, K.] Iowa State Univ, Dept Phys & Astron, Ames, IA USA.
   [Aleksandrov, I. N.; Bardin, D. Y.; Bednyakov, V. A.; Boyko, I. R.; Budagov, I. A.; Chelkov, G. A.; Cheplakov, A.; Chizhov, M. V.; Dedovich, D. V.; Demichev, M.; Glonti, G. L.; Gostkin, M. I.; Grigalashvili, N.; Huseynov, N.; Kalinovskaya, L. V.; Kazarinov, M. Y.; Kekelidze, G. D.; Kharchenko, D.; Khramov, E.; Kolesnikov, V.; Kotov, V. M.; Kruchonak, U.; Krumshteyn, Z. V.; Kukhtin, V.; Ladygin, E.; Minashvili, I. A.; Mineev, M.; Olchevski, A. G.; Peshekhonov, V. D.; Plotnikova, E.; Pozdnyakov, V.; Rumyantsev, L.; Rusakovich, N. A.; Sadykov, R.; Shiyakova, M.; Sisakyan, A. N.; Topilin, N. D.; Vinogradov, V. B.; Zhemchugov, A.; Zimin, N. I.] Joint Inst Nucl Res Dubna, Joint Inst Nucl Res, Dubna, Russia.
   [Amako, K.; Arai, Y.; Doi, Y.; Haruyama, T.; Ikegami, Y.; Ikeno, M.; Iwasaki, H.; Kanzaki, J.; Kohriki, T.; Kondo, T.; Makida, Y.; Manabe, A.; Mitsui, S.; Nagano, K.; Nakamura, K.; Nozaki, M.; Odaka, S.; Sasaki, O.; Suzuki, Y.; Takubo, Y.; Tanaka, S.; Terada, S.; Tokushuku, K.; Tsuno, S.; Unno, Y.; Yamada, M.; Yamamoto, A.; Yasu, Y.] High Energy Accelerator Res Org, KEK, Tsukuba, Ibaraki, Japan.
   [Hayakawa, T.; King, M.; Kishimoto, T.; Kitamura, T.; Kurashige, H.; Matsushita, T.; Ochi, A.; Suzuki, Y.; Takeda, H.; Tani, K.; Watanabe, I.; Yamazaki, Y.; Yuan, L.] Kobe Univ, Grad Sch Sci, Kobe, Hyogo 657, Japan.
   [Ishino, M.; Sasao, N.; Sumida, T.] Kyoto Univ, Fac Sci, Kyoto, Japan.
   [Takashima, R.] Kyoto Univ, Kyoto 612, Japan.
   [Kawagoe, K.; Oda, S.; Tojo, J.] Kyushu Univ, Dept Phys, Fukuoka 812, Japan.
   [Alonso, F.; Anduaga, X. S.; Dova, M. T.; Monticelli, F.; Tripiana, M. F.] Univ Nacl La Plata, Inst Fis La Plata, La Plata, Buenos Aires, Argentina.
   [Alonso, F.; Anduaga, X. S.; Dova, M. T.; Monticelli, F.; Tripiana, M. F.] Consejo Nacl Invest Cient & Tecn, La Plata, Buenos Aires, Argentina.
   [Allison, L. J.; Barton, A. E.; Borissov, G.; Bouhova-Thacker, E. V.; Chilingarov, A.; Davidson, R.; Dearnaley, W. J.; Fox, H.; Grimm, K.; Henderson, R. C. W.; Hughes, G.; Jones, R. W. L.; Kartvelishvili, V.; Long, R. E.; Love, P. A.; Maddocks, H. J.; Smizanska, M.; Walder, J.] Univ Lancaster, Dept Phys, Lancaster, England.
   [Bianco, M.; Cataldi, G.; Chiodini, G.; Gorini, E.; Grancagnolo, F.; Orlando, N.; Perrino, R.; Primavera, M.; Spagnolo, S.; Ventura, A.] Ist Nazl Fis Nucl, Sez Lecce, Milan, Italy.
   [Bianco, M.; Gorini, E.; Orlando, N.; Spagnolo, S.; Ventura, A.] Univ Salento, Dipartimento Matemat & Fis, Lecce, Italy.
   [Allport, P. P.; Bundock, A. C.; Burdin, S.; D'Onofrio, M.; Dervan, P.; Greenshaw, T.; Gwilliam, C. B.; Hayward, H. S.; Jackson, J. N.; Jones, T. J.; King, B. T.; Klein, M.; Klein, U.; Kluge, T.; Kretzschmar, J.; Laycock, P.; Mahmoud, S.; Maxfield, S. J.; Mehta, A.; Migas, S.; Price, J.; Schnellbach, Y. J.; Sellers, G.; Vossebeld, J. H.; Waller, P.; Wrona, B.] Univ Liverpool, Oliver Lodge Lab, Liverpool L69 3BX, Merseyside, England.
   [Cindro, V.; Deliyergiyev, M.; Filipcic, A.; Gorisek, A.; Kersevan, B. P.; Kramberger, G.; Macek, B.; Mandic, I.; Mikuz, M.; Tykhonov, A.] Jozef Stefan Inst, Dept Phys, Ljubljana, Slovenia.
   [Cindro, V.; Deliyergiyev, M.; Filipcic, A.; Gorisek, A.; Kersevan, B. P.; Kramberger, G.; Macek, B.; Mandic, I.; Mikuz, M.; Tykhonov, A.] Univ Ljubljana, Ljubljana, Slovenia.
   [Adragna, P.; Bona, M.; Carter, A. A.; Cerrito, L.; Eisenhandler, E.; Ellis, K.; Fletcher, G.; Goddard, J. R.; Hickling, R.; Landon, M. P. J.; Lloyd, S. L.; Morris, J. D.; Piccaro, E.; Poll, J.; Rizvi, E.; Salamanna, G.; Snidero, G.; Castanheira, M. Teixeira Dias; Wiglesworth, C.] Queen Mary Univ London, Sch Phys & Astron, London, England.
   [Ochoa, M. I.; Baker, S.; Bernat, P.; Bieniek, S. P.; Butterworth, J. M.; Campanelli, M.; Chislett, R. T.; Christidi, I. A.; Cooper, B. D.; Davison, A. R.; Dobson, E.; Hesketh, G. G.; Jansen, E.; Konstantinidis, N.; Lambourne, L.; Monk, J.; Nash, M.; Nurse, E.; Prabhu, R.; Sherwood, P.; Simmons, B.; Taylor, C.; Wardrope, D. R.; Waugh, B. M.; Wijeratne, P. A.] UCL, Dept Phys & Astron, London, England.
   [Beau, T.; Bomben, M.; Bordoni, S.; Calderini, G.; Cavalleri, P.; Crescioli, F.; Davignon, O.; De Cecco, S.; Derue, F.; Krasny, M. W.; Kuna, M.; Lacour, D.; Laforge, B.; Laplace, S.; Le Dortz, O.; Malaescu, B.; G.; Nikolic-Audit, I.; Ocariz, J.; Rangel-Smith, C.; Ridel, M.; Roos, L.; Schwemling, Ph; Theveneaux-Pelzer, T.; Torres, H.; Trincaz-Duvoid, S.; Vannucci, F.] UPMC, Lab Phys Nucl & Hautes Energies, Paris, France.
   [Beau, T.; Bomben, M.; Bordoni, S.; Calderini, G.; Cavalleri, P.; Crescioli, F.; Davignon, O.; De Cecco, S.; Derue, F.; Krasny, M. W.; Kuna, M.; Lacour, D.; Laforge, B.; Laplace, S.; Le Dortz, O.; Malaescu, B.; G.; Nikolic-Audit, I.; Ocariz, J.; Rangel-Smith, C.; Ridel, M.; Roos, L.; Schwemling, Ph; Theveneaux-Pelzer, T.; Torres, H.; Trincaz-Duvoid, S.; Vannucci, F.] Univ Paris Diderot, Paris, France.
   [Beau, T.; Bomben, M.; Bordoni, S.; Calderini, G.; Cavalleri, P.; Crescioli, F.; Davignon, O.; De Cecco, S.; Derue, F.; Krasny, M. W.; Kuna, M.; Lacour, D.; Laforge, B.; Laplace, S.; Le Dortz, O.; Malaescu, B.; G.; Nikolic-Audit, I.; Ocariz, J.; Rangel-Smith, C.; Ridel, M.; Roos, L.; Schwemling, Ph; Theveneaux-Pelzer, T.; Torres, H.; Trincaz-Duvoid, S.; Vannucci, F.] CNRS, IN2P3, Paris, France.
   [Akesson, T. P. A.; Bocchetta, S. S.; Bryngemark, L.; Floderus, A.; Hawkins, A. D.; Hedberg, V.; Jarlskog, G.; Lundberg, B.; Lytken, E.; Meirose, B.; Mjornmark, J. U.; Smirnova, O.] Lund Univ, Inst Fys, Lund, Sweden.
   [Arnal, V.; Barreiro, F.; Cantero, J.; De la Torre, H.; Del Peso, J.; Glasman, C.; Labarga, L.; Llorente Merino, J.; Terron, J.] Univ Autonoma Madrid, Dept Fis Teor C15, Madrid, Spain.
   [Arnaez, O.; Blum, W.; Buescher, V.; Caputo, R.; Eckweiler, S.; Ellinghaus, E.; Ertel, E.; Fiedler, F.; Fleckner, J.; Goeringer, C.; Handel, C.; Hohlfeld, M.; Hsu, P. J.; Ji, W.; Kawamura, G.; Kleinknecht, K.; Koenig, S.; Koepke, L.; Lungwitz, M.; Masetti, L.; Meyer, C.; Moreno, D.; Mueller, T.; Neusiedl, A.; Poettgen, R.; Sander, H. G.; Schaefer, U.; Schmitt, C.; Schott, M.; Schroeder, C.; Simioni, E.; Tapprogge, S.; Wollstadt, S. J.] Johannes Gutenberg Univ Mainz, Inst Phys, Mainz, Germany.
   [Almond, J.; Borri, M.; Brown, G.; Chavda, V.; Cox, B. E.; Da Via, C.; Duerdoth, I. P.; Forti, A.; Howarth, J.; Ibbotson, M.; Joshi, K. D.; Klinger, J. A.; Loebinger, F. K.; Marx, M.; Masik, J.; Neep, T. J.; Oh, A.; Owen, M.; Pater, J. R.; Pilkington, A. D.; Robinson, J. E. M.; Snow, S. W.; Watts, S.; Woudstra, M. J.; Yang, U. K.] Univ Manchester, Sch Phys & Astron, Manchester, Lancs, England.
   [Aoun, S.; Barbero, M.; Bee, C. P.; Bertella, C.; Bousson, N.; Clemens, J. C.; Coadou, Y.; Djama, F.; Etienne, F.; Feligioni, L.; Hoffmann, D.; Hubaut, F.; Knoops, E. B. F. G.; Le Guirriec, E.; Li, B.; Li, S.; Maurer, J.; Monnier, E.; Nagai, Y.; Odier, J.; Pralavorio, P.; Rozanov, A.; Serre, T.; Talby, M.; Tannoury, N.; Tiouchichine, E.; Tisserant, S.; Toth, J.; Touchard, F.; Ughetto, M.; Vacavant, L.] Aix Marseille Univ, CPPM, Marseille, France.
   [Aoun, S.; Barbero, M.; Bee, C. P.; Bertella, C.; Bousson, N.; Clemens, J. C.; Coadou, Y.; Djama, F.; Etienne, F.; Feligioni, L.; Hoffmann, D.; Hubaut, F.; Knoops, E. B. F. G.; Le Guirriec, E.; Li, B.; Li, S.; Maurer, J.; Monnier, E.; Nagai, Y.; Odier, J.; Pralavorio, P.; Rozanov, A.; Serre, T.; Talby, M.; Tannoury, N.; Tiouchichine, E.; Tisserant, S.; Toth, J.; Touchard, F.; Ughetto, M.; Vacavant, L.] CNRS, IN2P3, Marseille, France.
   [Brau, B.; Colon, G.; Dallapiccola, C.; Meade, A.; Moyse, E. J. W.; Pais, P.; Pueschel, E.; Varol, T.; Ventura, D.; Willocq, S.] Univ Massachusetts, Dept Phys, Amherst, MA 01003 USA.
   [Belanger-Champagne, C.; Chapleau, B.; Cheatham, S.; Corriveau, F.; Dobbs, M.; Dufour, M-A; Klemetti, M.; Mantifel, R.; Mc Donald, J.; Robertson, S. H.; Rios, C. Santamarina; Schram, M.; Stockton, M. C.; Stoebe, M.; Vachon, B.; Warburton, A.] McGill Univ, Dept Phys, Montreal, PQ, Canada.
   [Barberio, E. L.; Davidson, N.; Diglio, S.; Hamano, K.; Jennens, D.; Kubota, T.; Limosani, A.; Moorhead, G. F.; Hanninger, G. Nunes; Phan, A.; Shao, Q. T.; Tan, K. G.; Taylor, G. N.; Thong, W. M.; Volpi, M.; White, M. J.] Univ Melbourne, Sch Phys, Melbourne, Vic 3010, Australia.
   [Armbruster, A. J.; Chapman, J. W.; Cirilli, M.; Dai, T.; Diehl, E. B.; Ferretti, C.; Goldfarb, S.; Harper, D.; Levin, D.; Li, X.; Liu, L.; Mc Kee, S. P.; Neal, H. A.; Panikashvili, N.; Purdham, J.; Qian, J.; Scheirich, D.; Thun, R. P.; Walch, S.; Wilson, A.; Wooden, G.; Wu, Y.; Zhang, D.; Zhou, B.; Zhu, J.] Univ Michigan, Dept Phys, Ann Arbor, MI 48109 USA.
   [Abolins, M.; Gonzalez, B. Alvarez; Arabidze, G.; Brock, R.; Bromberg, C.; Caughron, S.; Hauser, R.; Holzbauer, J. L.; Huston, J.; Koll, J.; Linnemann, J. T.; Martin, B.; Miller, R. J.; Pope, B. G.; Schwienhorst, R.; Stelzer, H. J.; Tollefson, K.; True, P.; Zhang, H.] Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA.
   [Alessandria, F.; Alimonti, G.; Andreazza, A.; Baccaglioni, G.; Besana, M. I.; Broggi, F.; Carminati, L.; Cavalli, D.; Citterio, M.; Consonni, S. M.; Costa, G.; Fanti, M.; Favareto, A.; Giugni, D.; Koletsou, I.; Lari, T.; Mandelli, L.; Mazzanti, M.; Meloni, F.; Meroni, C.; Perini, L.; Pizio, C.; Ragusa, F.; Resconi, S.; Rivoltella, G.; Simoniello, R.; Tartarelli, G. F.; Troncon, C.; Turra, R.; Volpini, G.] Ist Nazl Fis Nucl, Sez Milano, Milan, Italy.
   [Andreazza, A.; Besana, M. I.; Carminati, L.; Consonni, S. M.; Fanti, M.; Favareto, A.; Meloni, F.; Perini, L.; Pizio, C.; Ragusa, F.; Rivoltella, G.; Simoniello, R.; Turra, R.] Univ Milan, Dipartimento Fis, Milan, Italy.
   [Bogouch, A.; Harkusha, S.; Kulchitsky, Y.; Kurochkin, Y. A.; Satsounkevitch, I.; Tsiareshka, P. V.] Natl Acad Sci Belarus, BI Stepanov Phys Inst, Minsk, Byelarus.
   [Yanush, S.] Natl Sci & Educ Ctr Particle & High Energy Phys, Minsk, Byelarus.
   [Taylor, F. E.] MIT, Dept Phys, Cambridge, MA 02139 USA.
   [Arguin, J-F; Azuelos, G.; Banerjee, P.; Bouchami, J.; Dallaire, F.; Davies, M.; Gauthier, L.; Giunta, M.; Leroy, C.; Martin, J. P.; Soueid, P.] Univ Montreal, Grp Particle Phys, Montreal, PQ, Canada.
   [Akimov, A. V.; Baranov, S. P.; Gavrilenko, I. L.; Komar, A. A.; Mashinistov, R.; Mouraviev, S. V.; Nechaeva, P. Yu; Shmeleva, A.; Snesarev, A. A.; Sulin, V. V.; Tikhomirov, V. O.] Acad Sci, PN Lebedev Phys Inst, Moscow, Russia.
   [Artamonov, A.; Gorbounov, P. A.; Khovanskiy, V.; Shatalov, P. B.; Tsukerman, I. I.] Inst Theoret & Expt Phys, Moscow 117259, Russia.
   [Antonov, A.; Belotskiy, K.; Bulekov, O.; Dolgoshein, B. A.; Kantserov, V. A.; Khodinov, A.; Romaniouk, A.; Shulga, E.; Smirnov, S. Yu; Smirnov, Y.; Soldatov, E. Yu; Timoshenko, S.] Moscow Engn & Phys Inst MEPhI, Moscow, Russia.
   [Gladilin, L. K.; Grishkevich, Y. V.; Kramarenko, V. A.; Rud, V. I.; Sivoklokov, S. Yu; Smirnova, L. N.] Moscow MV Lomonosov State Univ, DV Skobeltsyn Inst Nucl Phys, Moscow, Russia.
   [Adomeit, S.; Beale, S.; Becker, S.; Biebel, O.; Bortfeldt, J.; Calfayan, P.; de Graat, J.; Duckeck, G.; Ebke, J.; Elmsheuser, J.; Engl, A.; Galea, C.; Heller, C.; Hertenberger, R.; Legger, F.; Lorenz, J.; Mann, A.; Mueller, T. A.; Nunnemann, T.; Oakes, L. B.; Rauscher, F.; Reznicek, P.; Ruschke, A.; Sanders, M. P.; Schaile, D.; Schieck, J.; Schmitt, C.; Staude, A.; Vladoiu, D.; Walker, R.; Will, J. Z.; Zibell, A.] Univ Munich, Fak Phys, Munich, Germany.
   [Barillari, T.; Beimforde, M.; Bethke, S.; Bittner, B.; Bronner, J.; Capriotti, D.; Compostella, G.; Cortiana, G.; Dubbert, J.; Flowerdew, M. J.; Giovannini, P.; Ince, T.; Jantsch, A.; Kiryunin, A. E.; Kluth, S.; Kortner, O.; Kortner, S.; Kotov, S.; Kroha, H.; Macchiolo, A.; Manfredini, A.; Menke, S.; Moser, H. G.; Nagel, M.; Nisius, R.; Oberlack, H.; Pahl, C.; Pospelov, G. E.; Potrap, I. N.; Richter, R.; Salihagic, D.; Sandstroem, R.; Schacht, P.; Schwegler, Ph; Stern, S.; Stonjek, S.; Vanadia, M.; von der Schmitt, H.; Weigell, P.; Wildauer, A.; Zanzi, D.; Zhuravlov, V.] Max Planck Inst Phys & Astrophys, Werner Heisenberg Inst, D-80805 Munich, Germany.
   [Shimojima, M.] Nagasaki Inst Appl Sci, Nagasaki, Japan.
   [Aoki, M.; Hasegawa, S.; Morvaj, L.; Ohshima, T.; Shimizu, S.; Takahashi, Y.; Tomoto, M.; Wakabayashi, J.; Yamauchi, K.] Nagoya Univ, Grad Sch Sci, Nagoya, Aichi 4648601, Japan.
   [Aoki, M.; Hasegawa, S.; Morvaj, L.; Ohshima, T.; Shimizu, S.; Takahashi, Y.; Tomoto, M.; Wakabayashi, J.; Yamauchi, K.] Nagoya Univ, Kobayashi Maskawa Inst, Nagoya, Aichi 4648601, Japan.
   [Aloisio, A.; Alviggi, M. G.; Canale, V.; Carlino, G.; Chiefari, G.; Conventi, F.; de Asmundis, R.; Della Pietra, M.; della Volpe, D.; Di Donato, C.; Doria, A.; Giordano, R.; Iengo, P.; Izzo, V.; Merola, L.; Patricelli, S.; Sanchez, A.; Sekhniaidze, G.] Ist Nazl Fis Nucl, Sez Napoli, Milan, Italy.
   [Aloisio, A.; Alviggi, M. G.; Canale, V.; Chiefari, G.; della Volpe, D.; Di Donato, C.; Giordano, R.; Merola, L.; Patricelli, S.; Sanchez, A.] Univ Naples Federico II, Dipartimento Sci Fis, Naples, Italy.
   [Gorelov, I.; Hoeferkamp, M. R.; Seidel, S. C.; Toms, K.; Wang, R.] Univ New Mexico, Dept Phys & Astron, Albuquerque, NM USA.
   [Besjes, G. J.; Caron, S.; Chelstowska, M. A.; Dao, V.; De Groot, N.; Filthaut, F.; Klok, P. F.; Koenig, A. C.; Koetsveld, F.; Raas, M.; Salvucci, A.] Radboud Univ Nijmegen Nikhef, Inst Math Astrophys & Particle Phys, Nijmegen, Netherlands.
   [Aben, R.; Beemster, L. J.; Bentvelsen, S.; Berglund, E.; Bobbink, G. J.; Bos, K.; Boterenbrood, H.; Colijn, A. P.; de Jong, P.; De Nooij, L.; Deluca, C.; Deviveiros, P. O.; Doxiadis, A. D.; Ferrari, P.; Gadatsch, S.; Geerts, D. A. A.; Gosselink, M.; Hartjes, F.; Hessey, N. P.; Igonkina, O.; Klous, S.; Kluit, P.; Koffeman, E.; Lee, H.; Lenz, T.; Linde, F.; Mahlstedt, J.; Mechnich, J.; Mussche, I.; Ottersbach, J. P.; Pani, P.; Ruckstuhl, N.; Ta, D.; Tsiakiris, M.; Van der Deijl, P. C.; van der Geer, R.; van der Graaf, H.; Van der Leeuw, R.; van der Poel, E.; van Vulpen, I.; Verkerke, W.; Vermeulen, J. C.; Milosavljevic, M. Vranjes; Vreeswijk, M.] Nikhef Natl Inst Subatom Phys, Amsterdam, Netherlands.
   [Aben, R.; Beemster, L. J.; Bentvelsen, S.; Berglund, E.; Bobbink, G. J.; Bos, K.; Boterenbrood, H.; Colijn, A. P.; de Jong, P.; De Nooij, L.; Deluca, C.; Deviveiros, P. O.; Doxiadis, A. D.; Ferrari, P.; Gadatsch, S.; Geerts, D. A. A.; Gosselink, M.; Hartjes, F.; Hessey, N. P.; Igonkina, O.; Klous, S.; Kluit, P.; Koffeman, E.; Lee, H.; Lenz, T.; Linde, F.; Mahlstedt, J.; Mechnich, J.; Mussche, I.; Ottersbach, J. P.; Pani, P.; Ruckstuhl, N.; Ta, D.; Tsiakiris, M.; Van der Deijl, P. C.; van der Geer, R.; van der Graaf, H.; Van der Leeuw, R.; van der Poel, E.; van Vulpen, I.; Verkerke, W.; Vermeulen, J. C.; Milosavljevic, M. Vranjes; Vreeswijk, M.] Univ Amsterdam, Amsterdam, Netherlands.
   [Calkins, R.; Chakraborty, D.; Cole, S.; de Lima, J. G. Rocha; Suhr, C.; Yurkewicz, A.; Zutshi, V.] No Illinois Univ, Dept Phys, De Kalb, IL 60115 USA.
   [Anisenkov, A.; Beloborodova, O.; Bobrovnikov, V. S.; Bogdanchikov, A.; Kazanin, V. F.; Kolachev, G. M.; Korol, A.; Malyshev, V.; Maslennikov, A. L.; Maximov, D. A.; Peleganchuk, S. V.; Skovpen, K.; Soukharev, A.; Talyshevh, A.; Tikhonovh, Y. A.] SB RAS, Budker Inst Nucl Phys, Novosibirsk, Russia.
   [Budick, B.; Casadei, D.; Cranmer, K.; Haas, A.; van Huysduynen, L. Hooft; Kaplan, B.; Konoplich, R.; Krasznahorkay, A.; Kreiss, S.; Lewis, G. H.; Mincer, A. I.; Nemethy, P.; Neves, R. M.; Prokofiev, K.; Zhao, L.] NYU, Dept Phys, New York, NY 10003 USA.
   [Fisher, M. J.; Gan, K. K.; Ishmukhametov, R.; Kagan, H.; Kass, R. D.; Merritt, H.; Moss, J.; Nagarkar, A.; Pignotti, D. T.; Rahimi, A. M.; Strang, M.; Yang, Y.] Ohio State Univ, Columbus, OH 43210 USA.
   [Nakano, I.] Okayama Univ, Fac Sci, Okayama 700, Japan.
   [Abbott, B.; Gutierrez, P.; Jana, D. K.; Marzin, A.; Meera-Lebbai, R.; Norberg, S.; Saleem, M.; Severini, H.; Skubic, P.; Snow, J.; Strauss, M.] Univ Oklahoma, Homer L Dodge Dept Phys & Astron, Norman, OK 73019 USA.
   [Abi, B.; Khanov, A.; Rizatdinova, F.; Yu, J.] Oklahoma State Univ, Dept Phys, Stillwater, OK 74078 USA.
   [Hamal, P.; Hrabovsky, M.; Nozka, L.] Palacky Univ, RCPTM, CR-77147 Olomouc, Czech Republic.
   [Brau, J. E.; Potter, C. T.; Ptacek, E.; Radloff, P.; Reinsch, A.; Searcy, J.; Shamim, M.; Sinev, N. B.; Strom, D. M.; Torrence, E.] Univ Oregon, Ctr High Energy Phys, Eugene, OR 97403 USA.
   [Khalek, S. Abdel; Andari, N.; Auge, E.; Benoit, M.; Binet, S.; Bourdarios, C.; De La Taille, C.; De Regie, J. B. De Vivie; Duflot, L.; Escalier, M.; Fayard, L.; Fournier, D.; Grivaz, J. -F.; Guillemin, T.; Henrot-Versille, S.; Hrivnac, J.; Iconomidou-Fayard, L.; Idarraga, J.; Kado, M.; Martinez, N. Lorenzo; Lounis, A.; Makovec, N.; Niedercorn, F.; Poggioli, L.; Puzo, P.; Renaud, A.; Rousseau, D.; Ruan, X.; Rybkin, G.; Sauvan, J. B.; Schaarschmidt, J.; Schaffer, A. C.; Scifo, E.; Serin, L.; Simion, S.; Tanaka, R.; Teinturier, M.; Zerwas, D.; Zhang, Z.] Univ Paris 11, LAL, Orsay, France.
   [Khalek, S. Abdel; Andari, N.; Auge, E.; Benoit, M.; Binet, S.; Bourdarios, C.; De La Taille, C.; De Regie, J. B. De Vivie; Duflot, L.; Escalier, M.; Fayard, L.; Fournier, D.; Grivaz, J. -F.; Guillemin, T.; Henrot-Versille, S.; Hrivnac, J.; Iconomidou-Fayard, L.; Idarraga, J.; Kado, M.; Martinez, N. Lorenzo; Lounis, A.; Makovec, N.; Niedercorn, F.; Poggioli, L.; Puzo, P.; Renaud, A.; Rousseau, D.; Ruan, X.; Rybkin, G.; Sauvan, J. B.; Schaarschmidt, J.; Schaffer, A. C.; Scifo, E.; Serin, L.; Simion, S.; Tanaka, R.; Teinturier, M.; Zerwas, D.; Zhang, Z.] CNRS, IN2P3, F-91405 Orsay, France.
   [Hanagaki, K.; Hirose, M.; Lee, J. S. H.; Meguro, T.; Nomachi, M.; Okamura, W.; Sugaya, Y.] Osaka Univ, Grad Sch Sci, Osaka, Japan.
   [Bugge, L.; Buran, T.; Cameron, D.; Gjelsten, B. K.; Gramstad, E.; Lund, E.; Ould-Saada, F.; Pajchel, K.; Read, A. L.; Rohne, O.; Samset, B. H.; Smestad, L.; Stapnes, S.; Strandlie, A.] Univ Oslo, Dept Phys, Oslo, Norway.
   [Apolle, R.; Barr, A. J.; Boddy, C. R.; Brandt, G.; Buchanan, J.; Buckingham, R. M.; Cooper-Sarkar, A. M.; Dafinca, A.; Davies, E.; Gallas, E. J.; Gwenlan, C.; Hall, D.; Hays, C. P.; Howard, J.; Huffman, T. B.; Issever, C.; King, R. S. B.; Kogan, L. A.; Lamer, A.; Lewis, A.; Liang, Z.; Livermore, S. S. A.; Mattravers, C.; Nickerson, R. B.; Pinder, A.; Robichaud-Veronneau, A.; Ryder, N. C.; Short, D.; Tseng, J. C-L.; Vickey, T.; Viehhauser, G. H. A.; Weidberg, A. R.; Whitehead, S. R.; Young, C. J.; Zhong, J.] Univ Oxford, Dept Phys, Oxford, England.
   [Colombo, T.; Conta, C.; Ferrari, R.; Franchino, S.; Fraternali, M.; Gaudio, G.; Lanza, A.; Livan, M.; Negri, A.; Polesello, G.; Rebuzzi, D. M.; Rimoldi, A.; Vercesi, V.] Ist Nazl Fis Nucl, Sez Pavia, Milan, Italy.
   [Colombo, T.; Conta, C.; Franchino, S.; Fraternali, M.; Livan, M.; Negri, A.; Rebuzzi, D. M.; Rimoldi, A.] Univ Pavia, Dipartimento Fis, I-27100 Pavia, Italy.
   [Alison, J.; Brendlinger, K.; Degenhardt, J.; Dressnandt, N.; Fratina, S.; Heim, S.; Hines, E.; Hong, T. M.; Jackson, B.; Keener, P. T.; Kroll, J.; Kunkle, J.; Lester, C. M.; Lipeles, E.; Newcomer, F. M.; Olivito, D.; Ospanov, R.; Reece, R.; Saxon, J.; Schaefer, D.; Stahlman, J.; Thomson, E.; Van Berg, R.; Williams, H. H.] Univ Penn, Dept Phys, Philadelphia, PA 19104 USA.
   [Fedin, O. L.; Gratchev, V.; Grebenyuk, O. G.; Maleev, V. P.; Ryabov, Y. F.; Schegelsky, V. A.; Sedykh, E.; Seliverstov, D. M.; Solovyev, V.] Petersburg Nucl Phys Inst, Gatchina, Russia.
   [Bertolucci, F.; Cascella, M.; Cavasinni, V.; Del Prete, T.; Dotti, A.; Roda, C.; Sarri, F.; White, S.; Zinonos, Z.] Ist Nazl Fis Nucl, Sez Pisa, Milan, Italy.
   [Bertolucci, F.; Cascella, M.; Cavasinni, V.; Del Prete, T.; Dotti, A.; Roda, C.; Sarri, F.; White, S.; Zinonos, Z.] Univ Pisa, Dipartimento Fis E Fermi, Pisa, Italy.
   [Boudreau, J.; Cleland, W.; Escobar, C.; Kittelmann, T.; Mueller, J.; Prieur, D.; Savinov, V.; Yoosoofmiya, R.] Univ Pittsburgh, Dept Phys & Astron, Pittsburgh, PA 15260 USA.
   [Aguilar-Saavedra, J. A.; Amor Dos Santos, S. P.; Amorim, A.; Anjos, N.; Carvalho, J.; Castro, N. F.; Conde Muino, P.; Da Cunha Sargedas De Sousa, M. J.; Do Valle Wemans, A.; Fiolhais, M. C. N.; Galhardo, B.; Gomes, A.; Jorge, P. M.; Lopes, L.; Machado Miguens, J.; Maio, A.; Maneira, J.; Oliveira, M.; Onofre, A.; Palma, A.; Pina, J.; Pinto, B.; Santos, H.; Saraiva, J. G.; Silva, J.; Veloso, F.; Wolters, H.] Lab Instrumentacao & Fis Expt Particulas LIP, Lisbon, Portugal.
   [Aguilar-Saavedra, J. A.] Univ Granada, Dept Fis Teor & Cosmos, Granada, Spain.
   [Aguilar-Saavedra, J. A.] Univ Granada, CAFPE, Granada, Spain.
   [Bohm, J.; Chudoba, J.; Gunther, J.; Jakoubek, T.; Juranek, V.; Kepka, O.; Kupco, A.; Kus, V.; Lokajicek, M.; Marcisovsky, M.; Mikestikova, M.; Myska, M.; Nemecek, S.; Ruzicka, P.; Schovancova, J.; Sicho, P.; Staroba, P.; Svatos, M.; Tasevsky, M.; Tic, T.; Vrba, V.] Acad Sci Czech Republic, Inst Phys, Prague, Czech Republic.
   [Augsten, K.; Gallus, P.; Holy, T.; Jakubek, J.; Kohout, Z.; Kral, V.; Krejci, F.; Pospisil, S.; Simak, V.; Slavicek, T.; Smolek, K.; Sodomka, J.; Solar, M.; Solc, J.; Sopko, V.; Sopko, B.; Stekl, I.; Turecek, D.; Vacek, V.; Vlasak, M.; Vokac, P.; Zeman, M.] Czech Tech Univ, CR-16635 Prague, Czech Republic.
   [Balek, P.; Chalupkova, I.; Davidek, T.; Dolejsi, J.; Dolezal, Z.; Torregrosa, E. Fullana; Kodys, P.; Leitner, R.; Novakova, J.; Rybar, M.; Spousta, M.; Strachota, P.; Suk, M.; Sykora, T.; Tas, P.; Valkar, S.; Vorobel, V.; Wilhelm, I.] Charles Univ Prague, Fac Math & Phys, Prague, Czech Republic.
   [Ammosov, V. V.; Borisov, A.; Denisov, S. P.; Fakhrutdinov, R. M.; Fenyuk, A. B.; Golubkov, D.; Ivashin, A. V.; Karyukhin, A. N.; Korotkov, V. A.; Kozhin, A. S.; Minaenko, A. A.; Myagkov, A. G.; Nikolaenko, V.; Solodkov, A. A.; Solovyanov, O. V.; Starchenko, E. A.; Zaitsev, A. M.; Zenin, O.; Zmouchko, V. V.] State Res Ctr Inst High Energy Phys, Protvino, Russia.
   [Adye, T.; Apolle, R.; Baines, J. T.; Barnett, B. M.; Burke, S.; Davies, E.; Dewhurst, A.; Emeliyanov, D.; Gallop, B. J.; Gee, C. N. P.; Gillman, A. R.; Haywood, S. J.; Kirk, J.; Mattravers, C.; McCubbin, N. A.; McMahon, S. J.; Middleton, R. P.; Murray, W. J.; Nash, M.; Phillips, P. W.; Sankey, D. P. C.; Scott, W. G.; Tyndel, M.; Wickens, F. J.; Wielers, M.] Rutherford Appleton Lab, Particle Phys Dept, Didcot OX11 0QX, Oxon, England.
   [Benslama, K.] Univ Regina, Dept Phys, Regina, SK S4S 0A2, Canada.
   [Tanaka, S.] Ritsumeikan Univ, Kusatsu, Shiga, Japan.
   [Anulli, F.; Artoni, G.; Bagnaia, P.; Bini, C.; Caloi, R.; Ciapetti, G.; D'Orazio, A.; De Pedis, D.; De Salvo, A.; De Zorzi, G.; Dionisi, C.; Falciano, S.; Gauzzi, P.; Gentile, S.; Giagu, S.; Ippolito, V.; Lacava, F.; Lo Sterzo, F.; Loci, C.; Luminari, L.; Marzano, F.; Mirabelli, G.; Nisati, A.; Pasqualucci, E.; Petrolo, E.; Pontecorvo, L.; Rescigno, M.; Rosati, S.; Rossi, E.; Tehrani, E. Safai; Sidoti, A.; Camillocci, E. Solfaroli; Vari, R.; Veneziano, S.; Zanello, L.] Ist Nazl Fis Nucl, Sez Roma 1, Milan, Italy.
   [Artoni, G.; Bagnaia, P.; Bini, C.; Caloi, R.; Ciapetti, G.; D'Orazio, A.; De Zorzi, G.; Dionisi, C.; Gauzzi, P.; Gentile, S.; Giagu, S.; Ippolito, V.; Lacava, F.; Lo Sterzo, F.; Loci, C.; Messina, A.; Rossi, E.; Camillocci, E. Solfaroli; Zanello, L.] Univ Roma La Sapienza, Dipartimento Fis, I-00185 Rome, Italy.
   [Aielli, G.; Camarri, P.; Cardarelli, R.; Cattani, G.; Di Ciaccio, A.; Di Simone, A.; Liberti, B.; Marchese, F.; Mazzaferro, L.; Salamon, A.; Santonico, R.] Ist Nazl Fis Nucl, Sez Roma Tar Vergata, Milan, Italy.
   [Aielli, G.; Camarri, P.; Cattani, G.; Di Ciaccio, A.; Di Simone, A.; Marchese, F.; Mazzaferro, L.; Santonico, R.] Univ Roma Tor Vergata, Dipartimento Fis, I-00173 Rome, Italy.
   [Bacci, C.; Baroncelli, A.; Biglietti, M.; Bortolotto, V.; Branchini, P.; Ceradini, F.; Di Luise, S.; Farilla, A.; Graziani, E.; Iodice, M.; Orestano, D.; Passeri, A.; Pastore, F.; Petrucci, F.; Stanescu, C.] Ist Nazl Fis Nucl, Sez Roma Tre, Milan, Italy.
   [Bacci, C.; Bortolotto, V.; Ceradini, F.; Di Luise, S.; Orestano, D.; Pastore, F.; Petrucci, F.] Univ Roma Tre, Dipartimento Fis, Rome, Italy.
   [Benchekroun, D.; Chafaq, A.; Gouighri, M.; Hoummada, A.; Lablak, S.] Reseau Univ Phys Hautes Energies Univ Hassan II, Fac Sci Ain Chock, Casablanca, Morocco.
   [Ghazlane, H.] Ctr Natl Energie Sci Tech Nucl, Rabat, Morocco.
   [El Kacimi, M.; Goujdami, D.] Univ Cadi Ayyad, Fac Sci Semlalia, LPHEA, Marrakech, Morocco.
   [Derkaoui, J. E.; Ouchrif, M.; Tayalati, Y.] Univ Mohamed Premier, Fac Sci, Oujda, Morocco.
   [Derkaoui, J. E.; Ouchrif, M.; Tayalati, Y.] LFTPM, Oujda, Morocco.
   [Cherkaoui El Moursli, R.] Univ Mohammed V Agdal, Fac Sci, Rabat, Morocco.
   [Abreu, H.; Bachacou, H.; Balli, F.; Bauer, F.; Besson, N.; Blanchard, J. -B.; Bolnet, N. M.; Boonekamp, M.; Chevalier, L.; Ernwein, J.; Etienvre, A. I.; Formica, A.; Giraud, P. F.; Guyot, C.; Hassani, S.; Kozatiecki, W.; Lancon, E.; Laporte, J. F.; Legendre, M.; Maiani, C.; Mal, P.; Ramos, J. A. Manjarres; Mansoulie, B.; Martinez, H.; Meyer, J-P; Mijovic, L.; Morange, N.; Mountricha, E.; Hong, V. Nguyen Thi; Nicolaidou, R.; Ouraou, A.; Resende, B.; Royon, C. R.; Schoeffel, L.; Schune, Ph.; Schwindling, J.; Simard, O.; Vranjes, N.; Xiao, M.; Xu, C.] CEA Saclay Commissariat Energie Atom & Energies A, DSM IRFU Inst Rech Lois Fondamentales Univers, Gif Sur Yvette, France.
   [Damiani, D. S.; Grillo, A. A.; Litke, A. M.; Lockman, W. S.; Manning, P. M.; Mitrevski, J.; Nielsen, J.; Sadrozinski, H. F-W.; Schumm, B. A.; Seiden, A.] Univ Calif Santa Cruz, Santa Cruz Inst Particle Phys, Santa Cruz, CA 95064 USA.
   [Beckingham, M.; Coccaro, A.; Goussiou, A. G.; Harris, O. M.; Hsu, S. -C.; Keller, J. S.; Lubatti, H. J.; Rompotis, N.; Rothberg, J.; Verducci, M.; Watts, G.] Univ Washington, Dept Phys, Seattle, WA 98195 USA.
   [Costanzo, D.; Donszelmann, T. Cuhadar; Dawson, I.; Duxfield, R.; Hodgkinson, M. C.; Hodgson, P.; Johansson, P.; Korolkova, E. V.; Mcfayden, J. A.; Miyagawa, P. S.; Owen, S.; Paganis, E.; Suruliz, K.; Tovey, D. R.; Tsionou, D.; Tua, A.] Univ Sheffield, Dept Phys & Astron, Sheffield, S Yorkshire, England.
   [Hasegawa, Y.; Takeshita, T.] Shinshu Univ, Dept Phys, Nagano, Japan.
   [Buchholz, P.; Czirr, H.; Fleck, I.; Gaur, B.; Grybel, K.; Ibragimov, I.; Rammes, M.; Rosenthal, O.; Sipica, V.; Walkowiak, W.; Ziolkowski, M.] Univ Siegen, Fachbereich Phys, D-57068 Siegen, Germany.
   [Dawe, E.; Godfrey, J.; Kvita, J.; O'Neil, D. C.; Petteni, M.; Stelzer, B.; Tanasijczuk, A. J.; Trottier-McDonald, M.; Van Nieuwkoop, J.; Vetterli, M. C.] Simon Fraser Univ, Dept Phys, Burnaby, BC V5A 1S6, Canada.
   [Aracena, I.; Mayes, J. Backus; Barklow, T.; Bartoldus, R.; Bawa, H. S.; Black, J. E.; Butler, B.; Cogan, J. G.; Eifert, T.; Fulsom, B. G.; Gao, Y. S.; Garelli, N.; Grenier, P.; Hansson, P.; Kocian, M.; Koi, T.; Lowe, A. J.; Malone, C.; Mount, R.; Nelson, T. K.; Salnikov, A.; Schwartzman, A.; Silverstein, D.; Strauss, E.; Su, D.; Wilson, M. G.; Wittgen, M.; Young, C.] SLAC Natl Accelerator Lab, Stanford, CA USA.
   [Batkova, L.; Blazek, T.; Federic, P.; Stavina, P.; Sykora, I.; Tokar, S.; Zenis, T.] Comenius Univ, Fac Math Phys & Informat, Bratislava, Slovakia.
   [Antos, J.; Bruncko, D.; Ferencei, J.; Kladiva, E.; Seman, M.; Strizenec, P.] Slovak Acad Sci, Inst Expt Phys, Dept Subnucl Phys, Kosice 04353, Slovakia.
   [Assamagan, K.; Aurousseau, M.; Yacoob, S.] Univ Johannesburg, Dept Phys, Johannesburg, South Africa.
   [Bristow, T. M.; Carrillo-Montoya, G. D.; Hamilton, A.; Leney, K. J. C.; Vickey, T.; Boeriu, O. E. Vickey] Univ Witwatersrand, Sch Phys, Johannesburg, South Africa.
   [Asman, B.; Bendtz, K.; Bohm, C.; Clement, C.; Eriksson, D.; Gellerstedt, K.; Hellman, S.; Holmgren, S. O.; Johansen, M.; JohanssonA, K. E.; Jon-And, K.; Khandanyan, H.; Kim, H.; Klimek, P.; Lundberg, J.; Lundberg, O.; Milstead, D. A.; Moa, T.; Papadelis, A.; Sellden, B.; Silverstein, S. B.; Sjolin, J.; Strandberg, S.; Tyimad, M.; Yang, Z.] Stockholm Univ, Dept Phys, Stockholm, Sweden.
   [Asman, B.; Bendtz, K.; Clement, C.; Gellerstedt, K.; Hellman, S.; Johansen, M.; Jon-And, K.; Khandanyan, H.; Kim, H.; Klimek, P.; Lundberg, J.; Lundberg, O.; Milstead, D. A.; Moa, T.; Sjolin, J.; Strandberg, S.; Tyimad, M.; Yang, Z.] Oskar Klein Ctr, Stockholm, Sweden.
   [Jovicevic, J.; Kuwertz, E. S.; Lund-Jensen, B.; Strandberg, J.] Royal Inst Technol, Dept Phys, S-10044 Stockholm, Sweden.
   [Ahmad, A.; Arfaoui, S.; Devetak, E.; DeWilde, B.; Engelmann, R.; Farley, J.; Goodson, J. J.; Grassi, V.; Gray, J. A.; Hobbs, J.; Jia, J.; Li, H.; Mastrandrea, P.; McCarthy, R. L.; Mohapatra, S.; Puldon, D.; Rijssenbeek, M.; Schamberger, R. D.; Stupak, J.; Tsybychev, D.] SUNY Stony Brook, Dept Phys & Astron, Stony Brook, NY 11794 USA.
   [Ahmad, A.; Arfaoui, S.; Devetak, E.; DeWilde, B.; Engelmann, R.; Farley, J.; Goodson, J. J.; Grassi, V.; Gray, J. A.; Hobbs, J.; Jia, J.; Li, H.; Mastrandrea, P.; McCarthy, R. L.; Mohapatra, S.; Puldon, D.; Rijssenbeek, M.; Schamberger, R. D.; Stupak, J.; Tsybychev, D.] SUNY Stony Brook, Dept Chem, Stony Brook, NY 11794 USA.
   [Bartsch, V.; De Santo, A.; Martin-Haugh, S.; Potter, C. J.; Rose, A.; Salvatore, F.; Castillo, I. Santoyo; Sutton, M. R.] Univ Sussex, Dept Phys & Astron, Brighton, E Sussex, England.
   [Bangert, A.; Black, C. W.; Cuthbert, C.; Jeng, G. -Y.; Patel, N. D.; Saavedra, A. F.; Scarcella, M.; Varvell, K. E.; Watson, I. J.; Waugh, A. T.; Yabsley, B.] Univ Sydney, Sch Phys, Sydney, NSW 2006, Australia.
   [Chu, M. L.; Hou, S.; Jamin, D. O.; Lee, S. C.; Lin, S. C.; Liu, D.; Mazini, R.; Meng, Z.; Ren, Z. L.; Soh, D. A.; Teng, P. K.; Wang, J.; Wang, S. M.; Weng, Z.; Zhou, Y.] Acad Sinica, Inst Phys, Taipei, Taiwan.
   [Harpaz, S. Behar; Di Mattia, A.; Kajomovitz, E.; Kopeliansky, R.; Musto, E.; Rozen, Y.; Tarem, S.; Vallecorsa, S.] Technion Israel Inst Technol, Dept Phys, IL-32000 Haifa, Israel.
   [Abramowicz, H.; Alexander, G.; Amram, N.; Bella, G.; Benary, O.; Benhammou, Y.; Etzion, E.; Gershon, A.; Ginzburg, J.; Gueta, O.; Guttman, N.; Hod, N.; Munwes, Y.; Oren, Y.; Sadeh, I.; Silver, Y.; Soffer, A.; Taiblum, N.] Tel Aviv Univ, Raymond & Beverly Sackler Sch Phys & Astron, IL-69978 Tel Aviv, Israel.
   [Bachas, K.; Iliadis, D.; Kordas, K.; Kouskoura, V.; Nomidis, I.; Petridis, A.; Petridou, C.; Sampsonidis, D.] Aristotle Univ Thessaloniki, Dept Phys, GR-54006 Thessaloniki, Greece.
   [Akimoto, G.; Asai, S.; Azuma, Y.; Dohmae, T.; Kanaya, N.; Kataoka, Y.; Kawamoto, T.; Kazama, S.; Kessoku, K.; Kobayashi, T.; Komori, Y.; Mashimo, T.; Masubuchi, T.; Matsunaga, H.; Nakamura, T.; Ninomiya, Y.; Okuyama, T.; Sakamoto, H.; Sasaki, Y.; Tanaka, J.; Terashi, K.; Ueda, I.; Yamaguchi, H.; Yamamoto, S.; Yamamura, T.; Yamanaka, T.; Yamazaki, T.; Yoshihara, K.] Univ Tokyo, Int Ctr Elementary Particle Phys, Tokyo, Japan.
   [Akimoto, G.; Asai, S.; Azuma, Y.; Dohmae, T.; Kanaya, N.; Kataoka, Y.; Kawamoto, T.; Kazama, S.; Kessoku, K.; Kobayashi, T.; Komori, Y.; Mashimo, T.; Masubuchi, T.; Matsunaga, H.; Nakamura, T.; Ninomiya, Y.; Okuyama, T.; Sakamoto, H.; Sasaki, Y.; Tanaka, J.; Terashi, K.; Ueda, I.; Yamaguchi, H.; Yamamoto, S.; Yamamura, T.; Yamanaka, T.; Yamazaki, T.; Yoshihara, K.] Univ Tokyo, Dept Phys, Tokyo 113, Japan.
   [Bratzler, U.; Fukunaga, C.] Tokyo Metropolitan Univ, Grad Sch Sci & Technol, Tokyo 158, Japan.
   [Ishitsuka, M.; Jinnouchi, O.; Kanno, T.; Kuze, M.; Nagai, R.; Nobe, T.] Tokyo Inst Technol, Dept Phys, Tokyo 152, Japan.
   [AbouZeid, O. S.; Bailey, D. C.; Brelier, B.; Cheung, S. L.; Dhaliwal, S.; Farooque, T.; Fatholahzadeh, B.; Gibson, A.; Guo, B.; Ilic, N.; Keung, J.; Krieger, P.; Orr, R. S.; Polifka, R.; Rezvani, R.; Rosenbaum, G. A.; Rudolph, M. S.; Savard, P.; Sinervo, P.; Spreitzer, T.; Tardif, D.; Teuscher, R. J.; Thompson, P. D.; Trischuk, W.; Venturi, N.] Univ Toronto, Dept Phys, Toronto, ON, Canada.
   [Azuelos, G.; Canepa, A.; Chekulaev, S. V.; Fortin, D.; Gingrich, D. M.; Koutsman, A.; Losty, M. J.; Oakham, F. G.; Oram, C. J.; Codina, E. Perez; Savard, P.; Schouten, D.; Seuster, R.; Stelzer-Chilton, O.; Tafirout, R.; Trigger, I. M.; Vetterli, M. C.] TRIUMF, Vancouver, BC V6T 2A3, Canada.
   [Garcia, J. A. Benitez; Bustos, A. C. Florez; Palacino, G.; Taylor, W.] York Univ, Dept Phys & Astron, Toronto, ON M3J 2R7, Canada.
   [Hanawa, K.; Hara, K.; Hayashi, T.; Kim, S. H.; Kiuchi, K.; Kurata, M.; Nagai, K.; Ukegawa, F.] Univ Tsukuba, Fac Pure & Appl Sci, Tsukuba, Ibaraki, Japan.
   [Beauchemin, P. H.; Hamilton, S.; Meoni, E.; Napier, A.; Rolli, S.; Sliwa, K.; Todorova-Nova, S.; Wetter, J.] Tufts Univ, Dept Phys & Astron, Medford, MA 02155 USA.
   [Losada, M.; Loureiro, K. F.; Mendoza Navas, L.; Navarro, G.; Sandoval, C.] Univ Antonio Narino, Ctr Invest, Bogota, Colombia.
   [Farrell, S.; Eschrich, I. Gough; Lankford, A. J.; Magnoni, L.; Mete, A. S.; Nelson, A.; Rao, K.; Scannicchio, D. A.; Schernau, M.; Taffard, A.; Toggerson, B.; Unel, G.; Werth, M.; Whiteson, D.; Zhou, N.] Univ Calif Irvine, Dept Phys & Astron, Irvine, CA USA.
   [Acharya, B. S.; Alhroob, M.; Brazzale, S. F.; Cobal, M.; De Sanctis, U.; Pinamonti, M.; Shaw, K.; Soualah, R.] Ist Nazl Fis Nucl, Grp Coll Udine, Milan, Italy.
   [Acharya, B. S.] Abdus Salaam Int Ctr Theoret Phys, Trieste, Italy.
   [Alhroob, M.; Brazzale, S. F.; Cobal, M.; De Sanctis, U.; Giordani, M. P.; Pinamonti, M.; Shaw, K.; Soualah, R.] Univ Udine, Dipartimento Chim Fis & Ambiente, I-33100 Udine, Italy.
   [Anisenkov, A.; Atkinson, M.; Basye, A.; Benekos, N.; Cavaliere, V.; Chang, P.; Coggeshall, J.; Cortes-Gonzalez, A.; Errede, D.; Errede, S.; Lie, K.; Liss, T. M.; McCarn, A.; Neubauer, M. S.; Vichou, I.] Univ Illinois, Dept Phys, Urbana, IL 61801 USA.
   [Brenner, R.; Buszello, C. P.; Coniavitis, E.; Ekelof, T.; Ellert, M.; Ferrari, A.; Isaksson, C.; Madsen, A. K.; Pelikan, D.] Uppsala Univ, Dept Phys & Astron, Uppsala, Sweden.
   [Cabrera Urban, S.; Castillo Gimenez, V.; Costa, M. J.; Fassi, F.; Ferrer, A.; Fiorini, L.; Fuster, J.; Garcia, C.; Garcia Navarro, J. E.; Gonzalez de la Hoz, S.; Hernandez Jimenez, Y.; Higon-Rodriguez, E.; Irles Quiles, A.; Kaci, M.; Lacasta, C.; Lacuesta, V. R.; March, L.; Marti-Garcia, S.; Minano Moya, M.; Mitsou, V. A.; Moles-Valls, R.; Moreno Llacer, M.; Oliver Garcia, E.; Pedraza Lopez, S.; Perez Garcia-Estan, M. T.; Romero Adam, E.; Ros, E.; Salt, J.; Sanchez Martinez, V.; Soldevila, U.; Sanchez, J.; Torro Pastor, E.; Valero, A.; Valladolid Gallego, E.; Valls Ferrer, J. A.; Villaplana Perez, M.; Vos, M.] Univ Valencia, Inst Fis Corpuscular IFIC, Valencia, Spain.
   [Cabrera Urban, S.; Castillo Gimenez, V.; Costa, M. J.; Fassi, F.; Ferrer, A.; Fiorini, L.; Fuster, J.; Garcia, C.; Garcia Navarro, J. E.; Gonzalez de la Hoz, S.; Hernandez Jimenez, Y.; Higon-Rodriguez, E.; Irles Quiles, A.; Kaci, M.; Lacasta, C.; Lacuesta, V. R.; March, L.; Marti-Garcia, S.; Minano Moya, M.; Mitsou, V. A.; Moles-Valls, R.; Moreno Llacer, M.; Oliver Garcia, E.; Pedraza Lopez, S.; Perez Garcia-Estan, M. T.; Romero Adam, E.; Ros, E.; Salt, J.; Sanchez Martinez, V.; Soldevila, U.; Sanchez, J.; Torro Pastor, E.; Valero, A.; Valladolid Gallego, E.; Valls Ferrer, J. A.; Villaplana Perez, M.; Vos, M.] Univ Valencia, Dept Fis Atom Mol & Nucl, Valencia, Spain.
   [Cabrera Urban, S.; Castillo Gimenez, V.; Costa, M. J.; Fassi, F.; Ferrer, A.; Fiorini, L.; Fuster, J.; Garcia, C.; Garcia Navarro, J. E.; Gonzalez de la Hoz, S.; Hernandez Jimenez, Y.; Higon-Rodriguez, E.; Irles Quiles, A.; Kaci, M.; Lacasta, C.; Lacuesta, V. R.; March, L.; Marti-Garcia, S.; Minano Moya, M.; Mitsou, V. A.; Moles-Valls, R.; Moreno Llacer, M.; Oliver Garcia, E.; Pedraza Lopez, S.; Perez Garcia-Estan, M. T.; Romero Adam, E.; Ros, E.; Salt, J.; Sanchez Martinez, V.; Soldevila, U.; Sanchez, J.; Torro Pastor, E.; Valero, A.; Valladolid Gallego, E.; Valls Ferrer, J. A.; Villaplana Perez, M.; Vos, M.] Univ Valencia, Dept Ingn Elect, Valencia, Spain.
   [Cabrera Urban, S.; Castillo Gimenez, V.; Costa, M. J.; Fassi, F.; Ferrer, A.; Fiorini, L.; Fuster, J.; Garcia, C.; Garcia Navarro, J. E.; Gonzalez de la Hoz, S.; Hernandez Jimenez, Y.; Higon-Rodriguez, E.; Irles Quiles, A.; Kaci, M.; Lacasta, C.; Lacuesta, V. R.; March, L.; Marti-Garcia, S.; Minano Moya, M.; Mitsou, V. A.; Moles-Valls, R.; Moreno Llacer, M.; Oliver Garcia, E.; Pedraza Lopez, S.; Perez Garcia-Estan, M. T.; Romero Adam, E.; Ros, E.; Salt, J.; Sanchez Martinez, V.; Soldevila, U.; Sanchez, J.; Torro Pastor, E.; Valero, A.; Valladolid Gallego, E.; Valls Ferrer, J. A.; Villaplana Perez, M.; Vos, M.] Univ Valencia, Inst Microelect Barcelona IMB CNM, Valencia, Spain.
   [Cabrera Urban, S.; Castillo Gimenez, V.; Costa, M. J.; Fassi, F.; Ferrer, A.; Fiorini, L.; Fuster, J.; Garcia, C.; Garcia Navarro, J. E.; Gonzalez de la Hoz, S.; Hernandez Jimenez, Y.; Higon-Rodriguez, E.; Irles Quiles, A.; Kaci, M.; Lacasta, C.; Lacuesta, V. R.; March, L.; Marti-Garcia, S.; Minano Moya, M.; Mitsou, V. A.; Moles-Valls, R.; Moreno Llacer, M.; Oliver Garcia, E.; Pedraza Lopez, S.; Perez Garcia-Estan, M. T.; Romero Adam, E.; Ros, E.; Salt, J.; Sanchez Martinez, V.; Soldevila, U.; Sanchez, J.; Torro Pastor, E.; Valero, A.; Valladolid Gallego, E.; Valls Ferrer, J. A.; Villaplana Perez, M.; Vos, M.] CSIC, Valencia, Spain.
   [Axen, D.; Fedorko, W.; Gay, C.; Gecse, Z.; Loh, C. W.; Mills, W. J.; Swedish, S.; Viel, S.] Univ British Columbia, Dept Phys, Vancouver, BC, Canada.
   [Albert, J.; Astbury, A.; Bansal, V.; Berghaus, F.; Courneyea, L.; Fincke-Keeler, M.; Keeler, R.; Kowalewski, R.; Lefebvre, M.; Lessard, J-R; Marino, C. P.; Martyniuk, A. C.; McPherson, R. A.; Ouellette, E. A.; Pearce, J.; Sobie, R.] Univ Victoria, Dept Phys & Astron, Victoria, BC, Canada.
   [Farrington, S. M.; Jones, G.] Univ Warwick, Dept Phys, Coventry CV4 7AL, W Midlands, England.
   [Kimura, N.; Yorita, K.] Waseda Univ, Tokyo, Japan.
   [Alon, R.; Barak, L.; Bressler, S.; Citron, Z. H.; Duchovni, E.; Frank, T.; Gabizon, O.; Gross, E.; Groth-Jensen, J.; Klier, A.; Lellouch, D.; Levinson, L. J.; Mikenberg, G.; Milov, A.; Milstein, D.; Roth, I.; Silbert, O.; Smakhtin, V.; Vitells, O.] Weizmann Inst Sci, Dept Particle Phys, IL-76100 Rehovot, Israel.
   [Banerjee, Sw; Hernandez, A. M. Castaneda; Castaneda-Miranda, E.; Chen, X.; Dos Anjos, A.; Castillo, L. R. Flores; Gutzwiller, O.; Jared, R. C.; Ji, H.; Ju, X.; Kashif, L.; Ma, L. L.; Garcia, B. R. Mellado; Ming, Y.; Pan, Y. B.; Morales, M. I. Pedraza; Quayle, W. B.; Sarangi, T.; Wang, H.; Wiedenmann, W.; Wu, S. L.; Yang, H.; Zobernig, G.] Univ Wisconsin, Dept Phys, Madison, WI 53706 USA.
   [Fleischmann, P.; Meyer, J.; Redelbach, A.; Siragusa, G.; Stroehmer, R.; Tam, J. Y. C.; Trefzger, T.] Univ Wurzburg, Fak Phys & Astron, D-97070 Wurzburg, Germany.
   [Barisonzi, M.; Becker, K.; Becks, K. H.; Boek, J.; Boek, T. T.; Braun, H. M.; Cornelissen, T.; Duda, D.; Fleischmann, S.; Flick, T.; Gerlach, P.; Gorfine, G.; Hamacher, K.; Harenberg, T.; Hirschbuehl, D.; Kalinin, S.; Kersten, S.; Khoroshilov, A.; Kohlmann, S.; Lenzen, G.; Maettig, P.; Mechtel, M.; Neumann, M.; Pataraia, S.; Sandhoff, M.; Sartisohn, G.; Schultes, J.; Sturm, P.; Wagner, W.; Wahlen, H.; Wicke, D.; Zeitnitz, C.] Berg Univ Wuppertal, Fachbereich Phys C, Wuppertal, Germany.
   [Adelman, J.; Baker, O. K.; Bedikian, S.; Almenar, C. Cuenca; Cummings, J.; Czyczula, Z.; Demers, S.; Erdmann, J.; Garberson, F.; Golling, T.; Guest, D.; Henrichs, A.; Lagouri, T.; Lee, L.; Leister, A. G.; Loginov, A.; Sherman, D.; Tipton, P.; Wall, R.; Walsh, B.] Yale Univ, Dept Phys, New Haven, CT USA.
   [Hakobyan, H.] Yerevan Phys Inst, Yerevan 375036, Armenia.
   [Biscarat, C.; Rahal, G.] Inst Natl Phys Nucl & Phys Particules IN2P3, Ctr Calcul, Villeurbanne, France.
   [Acharya, B. S.] Kings Coll London, Dept Phys, London WC2R 2LS, England.
   [Amorim, A.; Gomes, A.; Maio, A.; Pina, J.] Univ Lisbon, Fac Ciencias, Lisbon, Portugal.
   [Amorim, A.; Gomes, A.; Maio, A.; Pina, J.] Univ Lisbon, CFNUL, P-1699 Lisbon, Portugal.
   [Bawa, H. S.; Gao, Y. S.; Lowe, A. J.] Calif State Univ Fresno, Dept Phys, Fresno, CA 93740 USA.
   [Beloborodova, O.; Maximov, D. A.; Talyshevh, A.; Tikhonovh, Y. A.] Novosibirsk State Univ, Novosibirsk 630090, Russia.
   [Carvalho, J.; Fiolhais, M. C. N.; Oliveira, M.; Wolters, H.] Univ Coimbra, Dept Phys, Coimbra, Portugal.
   [Hernandez, A. M. Castaneda] UASLP, Dept Phys, San Luis Potosi, Mexico.
   [Conventi, F.; Della Pietra, M.] Univ Napoli Parthenope, Naples, Italy.
   [Demirkoz, B.] Middle E Tech Univ, Dept Phys, TR-06531 Ankara, Turkey.
   [Dhullipudi, R.; Greenwood, Z. D.; Sawyer, L.] Louisiana Tech Univ, Ruston, LA 71270 USA.
   [Do Valle Wemans, A.] Univ Nova Lisboa, Dept Fis, Caparica, Portugal.
   [Do Valle Wemans, A.] Univ Nova Lisboa, CEFITEC, Fac Ciencias & Tecnol, Caparica, Portugal.
   [Hamilton, A.] Univ Cape Town, Dept Phys, ZA-7925 Cape Town, South Africa.
   [Kono, T.; Wildt, M. A.] Univ Hamburg, Inst Expt Phys, Hamburg, Germany.
   [Konoplich, R.] Manhattan Coll, New York, NY USA.
   [Liang, Z.; Soh, D. A.; Weng, Z.] Sun Yat Sen Univ, Sch Phys & Engn, Guangzhou, Peoples R China.
   [Lin, S. C.] Acad Sinica, Inst Phys, Acad Sinica Grid Comp, Taipei, Taiwan.
   [Onofre, A.] Univ Minho, Dept Fis, Braga, Portugal.
   [Onyisi, P. U. E.] Univ Texas Austin, Dept Phys, Austin, TX 78712 USA.
   [Park, W.; Purohit, M.] Univ S Carolina, Dept Phys & Astron, Columbia, SC 29208 USA.
   [Pasztor, G.; Toth, J.] Wigner Res Ctr Phys, Inst Particle & Nucl Phys, Budapest, Hungary.
   [Perez, K.] CALTECH, Pasadena, CA 91125 USA.
   [Richter-Was, E.] Jagiellonian Univ, Inst Phys, Krakow, Poland.
   [Smirnova, L. N.] Moscow MV Lomonosov State Univ, Fac Phys, Moscow, Russia.
   [Yacoob, S.] Univ KwaZulu Natal, Discipline Phys, Durban, South Africa.
RP Aad, G (reprint author), Univ Freiburg, Fak Math & Phys, Hugstetter Str 55, D-79106 Freiburg, Germany.
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   Massimo/J-5008-2012; Cavalli-Sforza, Matteo/H-7102-2015; Negrini,
   Matteo/C-8906-2014; Ferrer, Antonio/H-2942-2015; Prokoshin,
   Fedor/E-2795-2012; Hansen, John/B-9058-2015; Grancagnolo,
   Sergio/J-3957-2015; spagnolo, stefania/A-6359-2012; Shmeleva,
   Alevtina/M-6199-2015; Camarri, Paolo/M-7979-2015; Gavrilenko,
   Igor/M-8260-2015; Tikhomirov, Vladimir/M-6194-2015
OI Santamarina Rios, Cibran/0000-0002-9810-1816; Bosman,
   Martine/0000-0002-7290-643X; Castro, Nuno/0000-0001-8491-4376; Ventura,
   Andrea/0000-0002-3368-3413; Livan, Michele/0000-0002-5877-0062; Mitsou,
   Vasiliki/0000-0002-1533-8886; Joergensen, Morten/0000-0002-6790-9361;
   Mir, Lluisa-Maria/0000-0002-4276-715X; Riu, Imma/0000-0002-3742-4582;
   Mikestikova, Marcela/0000-0003-1277-2596; Kuday,
   Sinan/0000-0002-0116-5494; Tomasek, Lukas/0000-0002-5224-1936; Svatos,
   Michal/0000-0002-7199-3383; Peleganchuk, Sergey/0000-0003-0907-7592;
   Wolters, Helmut/0000-0002-9588-1773; De, Kaushik/0000-0002-5647-4489;
   Warburton, Andreas/0000-0002-2298-7315; Lee, Jason/0000-0002-2153-1519;
   Smirnova, Oxana/0000-0003-2517-531X; Fabbri, Laura/0000-0002-4002-8353;
   Villa, Mauro/0000-0002-9181-8048; Moraes, Arthur/0000-0002-5157-5686;
   Smirnov, Sergei/0000-0002-6778-073X; Conde Muino,
   Patricia/0000-0002-9187-7478; Andreazza, Attilio/0000-0001-5161-5759;
   Boyko, Igor/0000-0002-3355-4662; Kuleshov, Sergey/0000-0002-3065-326X;
   Solfaroli Camillocci, Elena/0000-0002-5347-7764; Ferrando,
   James/0000-0002-1007-7816; Barreiro, Fernando/0000-0002-3021-0258;
   Stoicea, Gabriel/0000-0002-7511-4614; Petrucci,
   Fabrizio/0000-0002-5278-2206; Veneziano, Stefano/0000-0002-2598-2659;
   Doyle, Anthony/0000-0001-6322-6195; Brooks, William/0000-0001-6161-3570;
   Pina, Joao /0000-0001-8959-5044; Vanyashin,
   Aleksandr/0000-0002-0367-5666; Moorhead, Gareth/0000-0002-9299-9549; La
   Rosa, Alessandro/0000-0001-6291-2142; Annovi,
   Alberto/0000-0002-4649-4398; Gerbaudo, Davide/0000-0002-4463-0878;
   Solodkov, Alexander/0000-0002-2737-8674; Zaitsev,
   Alexandre/0000-0002-4961-8368; Monzani, Simone/0000-0002-0479-2207;
   Vranjes Milosavljevic, Marija/0000-0003-4477-9733; SULIN,
   VLADIMIR/0000-0003-3943-2495; Olshevskiy, Alexander/0000-0002-8902-1793;
   Vanadia, Marco/0000-0003-2684-276X; Ippolito,
   Valerio/0000-0001-5126-1620; Mora Herrera, Maria
   Clemencia/0000-0003-3915-3170; Maneira, Jose/0000-0002-3222-2738;
   KHODINOV, ALEKSANDR/0000-0003-3551-5808; Gauzzi,
   Paolo/0000-0003-4841-5822; O'Shea, Val/0000-0001-7183-1205; Gorelov,
   Igor/0000-0001-5570-0133; Gladilin, Leonid/0000-0001-9422-8636;
   Carvalho, Joao/0000-0002-3015-7821; Mashinistov,
   Ruslan/0000-0001-7925-4676; Gonzalez de la Hoz,
   Santiago/0000-0001-5304-5390; Guo, Jun/0000-0001-8125-9433; Aguilar
   Saavedra, Juan Antonio/0000-0002-5475-8920; Wemans,
   Andre/0000-0002-9669-9500; Leyton, Michael/0000-0002-0727-8107; Jones,
   Roger/0000-0002-6427-3513; Pacheco Pages, Andres/0000-0001-8210-1734;
   Della Pietra, Massimo/0000-0003-4446-3368; Negrini,
   Matteo/0000-0003-0101-6963; Ferrer, Antonio/0000-0003-0532-711X;
   Prokoshin, Fedor/0000-0001-6389-5399; Hansen, John/0000-0002-8422-5543;
   Grancagnolo, Sergio/0000-0001-8490-8304; spagnolo,
   stefania/0000-0001-7482-6348; Camarri, Paolo/0000-0002-5732-5645;
   Tikhomirov, Vladimir/0000-0002-9634-0581
FU ANPCyT, Argentina; YerPhI, Armenia; ARC, Australia; BMWF, Austria; FWF,
   Austria; ANAS, Azerbaijan; SSTC, Belarus; CNPq, Brazil; FAPESP, Brazil;
   NSERC, Canada; NRC, Canada; CFI, Canada; CERN; CONICYT, Chile; CAS,
   China; MOST, China; NSFC, China; COLCIENCIAS, Colombia; MSMT CR, Czech
   Republic; MPO CR, Czech Republic; VSC CR, Czech Republic; DNRF, Denmark;
   DNSRC, Denmark; Lundbeck Foundation, Denmark; EPLANET; ERC; NSRF;
   European Union; IN2P3-CNRS, France; CEA-DSM/IRFU, France; GNSF, Georgia;
   BMBF, Germany; DFG, Germany; HGF, Germany; MPG, Germany; AvH Foundation,
   Germany; GSRT, Greece; NSRF, Greece; ISF, Israel; MINERVA, Israel; GIF,
   Israel; DIP, Israel; Benoziyo Center, Israel; INFN, Italy; MEXT, Japan;
   JSPS, Japan; CNRST, Morocco; FOM, Netherlands; NWO, Netherlands; BRF,
   Norway; RCN, Norway; MNiSW, Poland; GRICES, Portugal; FCT, Portugal;
   MERYS (MECTS), Romania; MES of Russia; ROSATOM; Russian Federation;
   JINR; MSTD, Serbia; MSSR, Slovakia; ARRS, Slovenia; MVZT, Slovenia;
   DST/NRF, South Africa; MICINN, Spain; SRC, Sweden; Wallenberg
   Foundation, Sweden; SER, Switzerland; SNSF, Switzerland; Cantons of
   Bern, Switzerland; Geneva, Switzerland; NSC, Taiwan; TAEK, Turkey; STFC,
   United Kingdom; Royal Society and Leverhulme Trust, United Kingdom; DOE,
   United States of America; NSF, United States of America
FX We acknowledge the support of ANPCyT, Argentina; YerPhI, Armenia; ARC,
   Australia; BMWF and FWF, Austria; ANAS, Azerbaijan; SSTC, Belarus; CNPq
   and FAPESP, Brazil; NSERC, NRC and CFI, Canada; CERN; CONICYT, Chile;
   CAS, MOST and NSFC, China; COLCIENCIAS, Colombia; MSMT CR, MPO CR and
   VSC CR, Czech Republic; DNRF, DNSRC and Lundbeck Foundation, Denmark;
   EPLANET, ERC and NSRF, European Union; IN2P3-CNRS, CEA-DSM/IRFU, France;
   GNSF, Georgia; BMBF, DFG, HGF, MPG and AvH Foundation, Germany; GSRT and
   NSRF, Greece; ISF, MINERVA, GIF, DIP and Benoziyo Center, Israel; INFN,
   Italy; MEXT and JSPS, Japan; CNRST, Morocco; FOM and NWO, Netherlands;
   BRF and RCN, Norway; MNiSW, Poland; GRICES and FCT, Portugal; MERYS
   (MECTS), Romania; MES of Russia and ROSATOM, Russian Federation; JINR;
   MSTD, Serbia; MSSR, Slovakia; ARRS and MVZT, Slovenia; DST/NRF, South
   Africa; MICINN, Spain; SRC and Wallenberg Foundation, Sweden; SER, SNSF
   and Cantons of Bern and Geneva, Switzerland; NSC, Taiwan; TAEK, Turkey;
   STFC, the Royal Society and Leverhulme Trust, United Kingdom; DOE and
   NSF, United States of America.
NR 68
TC 10
Z9 10
U1 7
U2 174
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0370-2693
EI 1873-2445
J9 PHYS LETT B
JI Phys. Lett. B
PD APR 25
PY 2013
VL 721
IS 4-5
BP 171
EP 189
DI 10.1016/j.physletb.2013.03.016
PG 19
WC Astronomy & Astrophysics; Physics, Nuclear; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 132GM
UT WOS:000318055900001
ER

PT J
AU Chatrchyan, S
   Khachatryan, V
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   Papadopoulos, I
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   Hajdu, C
   Hidas, P
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   Veszpremi, V
   Vesztergombi, G
   Zsigmond, AJ
   Beni, N
   Czellar, S
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   Bhatnagar, V
   Dhingra, N
   Gupta, R
   Kaur, M
   Mehta, MZ
   Mittal, M
   Nishu, N
   Saini, LK
   Sharma, A
   Singh, JB
   Kumar, A
   Kumar, A
   Ahuja, S
   Bhardwaj, A
   Choudhary, BC
   Malhotra, S
   Naimuddin, M
   Ranjan, K
   Saxena, P
   Sharma, V
   Shivpuri, RK
   Banerjee, S
   Bhattacharya, S
   Chatterjee, K
   Dutta, S
   Gomber, B
   Jain, S
   Jain, S
   Khurana, R
   Modak, A
   Mukherjee, S
   Roy, D
   Sarkar, S
   Sharan, M
   Abdulsalam, A
   Dutta, D
   Kailas, S
   Kumar, V
   Mohanty, AK
   Pant, LM
   Shukla, P
   Aziz, T
   Chatterjee, RM
   Ganguly, S
   Guchait, M
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   Maity, M
   Majumder, G
   Mazumdar, K
   Mohanty, GB
   Parida, B
   Sudhakar, K
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   Banerjee, S
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   Etesami, SM
   Fahim, A
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   Jafari, A
   Khakzad, M
   Najafabadi, MM
   Mehdiabadi, SP
   Safarzadeh, B
   Zeinali, M
   Abbrescia, M
   Barbone, L
   Calabria, C
   Chhibra, SS
   Colaleo, A
   Creanza, D
   De Filippis, N
   De Palma, M
   Fiore, L
   Iaselli, G
   Maggi, G
   Maggi, M
   Marangelli, B
   My, S
   Nuzzo, S
   Pacifico, N
   Pompili, A
   Pugliese, G
   Selvaggi, G
   Silvestris, L
   Singh, G
   Venditti, R
   Verwilligen, P
   Zito, G
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   Braibant-Giacomelli, S
   Brigliadori, L
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   Castro, A
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   Cuffiani, M
   Dallavalle, GM
   Fabbri, F
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CA CMS Collaboration
TI Measurement of the W+W- and ZZ production cross sections in pp
   collisions at root s=8 TeV
SO PHYSICS LETTERS B
LA English
DT Article
DE CMS; Physics; W and Z pair production
ID PARTON DISTRIBUTIONS; HIGGS-BOSON; LHC; SEARCH; CMS
AB The W+W- and ZZ production cross sections are measured in proton-proton collisions at root s = 8 TeV with the CMS experiment at the LHC in data samples corresponding to an integrated luminosity of up to 5.3 fb(-1). The measurements are performed in the leptonic decay modes W+W- -> l'vl '' v and ZZ -> 2l2l', where l = e, mu and l'(l '') = e, mu, tau. The measured cross sections sigma (pp -> W+W-) =, 69.9 +/- 2.8 (stat.) +/- 5.6 (syst.) 3.1 +/- (lum.) pb and sigma (pp -> ZZ) = 8.4 +/- 1.0 (stat) +/- 0.7 (syst) +/- 0.4 (lum.) pb, for both Z bosons produced in the mass region 60 < m(Z) < 120 GeV, are consistent with standard model predictions. These are the first measurements of the diboson production cross sections at root s = 8 TeV. (C) 2013 CERN. Published by Elsevier B.V. All rights reserved.
C1 [Chatrchyan, S.; Khachatryan, V.; Sirunyan, A. M.; Tumasyan, A.] Yerevan Phys Inst, Yerevan 375036, Armenia.
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   [Kim, J. Y.; Kim, Zero J.; Song, S.] Chonnam Natl Univ, Inst Universe & Elementary Particles, Kwangju, South Korea.
   [Choi, S.; Gyun, D.; Hong, B.; Jo, M.; Kim, H.; Kim, T. J.; Lee, K. S.; Moon, D. H.; Park, S. K.; Roh, Y.] Korea Univ, Seoul, South Korea.
   [Choi, M.; Kim, J. H.; Park, C.; Park, I. C.; Park, S.; Ryu, G.] Univ Seoul, Seoul, South Korea.
   [Choi, Y.; Choi, Y. K.; Goh, J.; Kim, M. S.; Kwon, E.; Lee, B.; Lee, J.; Lee, S.; Seo, H.; Yu, I.] Sungkyunkwan Univ, Suwon, South Korea.
   [Bilinskas, M. J.; Grigelionis, I.; Janulis, M.; Juodagalvis, A.] Vilnius State Univ, Vilnius, Lithuania.
   [Castilla-Valdez, H.; De La Cruz-Burelo, E.; Heredia-de La Cruz, I.; Lopez-Fernandez, R.; Martinez-Ortega, J.; Sanchez-Hernandez, A.; Villasenor-Cendejas, L. M.] IPN, Ctr Invest & Estudios Avanzados, Mexico City 07738, DF, Mexico.
   [Carrillo Moreno, S.; Vazquez Valencia, F.] Univ Iberoamer, Mexico City, DF, Mexico.
   [Salazar Ibarguen, H. A.] Benemerita Univ Autonoma Puebla, Puebla, Mexico.
   [Casimiro Linares, E.; Morelos Pineda, A.; Reyes-Santos, M. A.] Univ Autonoma San Luis Potosi, San Luis Potosi, Mexico.
   [Krofcheck, D.] Univ Auckland, Auckland 1, New Zealand.
   [Bell, A. J.; Butler, P. H.; Doesburg, R.; Reucroft, S.; Silverwood, H.] Univ Canterbury, Christchurch 1, New Zealand.
   [Ahmad, M.; Asghar, M. I.; Butt, J.; Hoorani, H. R.; Khalid, S.; Khan, W. A.; Khurshid, T.; Qazi, S.; Shah, M. A.; Shoaib, M.] Quaid I Azam Univ, Natl Ctr Phys, Islamabad, Pakistan.
   [Bluj, M.; Bialkowska, H.; Boimska, B.; Frueboes, T.; Gorski, M.; Kazana, M.; Nawrocki, K.; Romanowska-Rybinska, K.; Szleper, M.; Wrochna, G.; Zalewski, P.] Natl Ctr Nucl Res, Otwock, Poland.
   [Brona, G.; Bunkowski, K.; Cwiok, M.; Dominik, W.; Doroba, K.; Kalinowski, A.; Konecki, M.; Krolikowski, J.; Misiura, M.; Wolszczak, W.] Univ Warsaw, Inst Expt Phys, Fac Phys, Warsaw, Poland.
   [Almeida, N.; Bargassa, R.; David, A.; Faccioli, P.; Ferreira Parracho, P. G.; Gallinaro, M.; Seixas, J.; Varela, J.; Vischia, P.] Lab Instrumentacao & Fis Expt Particulas, Lisbon, Portugal.
   [Tsamalaidze, Z.; Belotelov, I.; Bunin, P.; Gavrilenko, M.; Golutvin, I.; Gorbunov, I.; Kamenev, A.; Karjavin, V.; Kozlov, G.; Lanev, A.; Malakhov, A.; Moisenz, P.; Palichik, V.; Perelygin, V.; Shmatov, S.; Smirnov, V.; Volodko, A.; Zarubin, A.] Joint Inst Nucl Res, Dubna, Russia.
   [Evstyukhin, S.; Golovtsov, V.; Ivanov, Y.; Kim, V.; Levchenko, P.; Murzin, V.; Oreshkin, V.; Smirnov, I.; Sulimov, V.; Uvarov, L.; Vavilov, S.; Vorobyev, A.; Vorobyev, An] Petersburg Nucl Phys Inst, St Petersburg, Russia.
   [Andreev, Yu; Dermenev, A.; Gninenko, S.; Golubev, N.; Kirsanov, M.; Krasnikov, N.; Matveev, V.; Pashenkov, A.; Tlisov, D.; Toropin, A.; Musienko, Y.] Russian Acad Sci, Inst Nucl Res, Moscow 117312, Russia.
   [Epshteyn, V.; Erofeeva, M.; Gavrilov, V.; Kossov, M.; Lychkovskaya, N.; Popov, V.; Safronov, G.; Semenov, S.; Shreyber, I.; Stolin, V.; Vlasov, E.; Zhokin, A.; Starodumov, A.; Nikitenko, A.] Inst Theoret & Expt Phys, Moscow 117259, Russia.
   [Andreev, V.; Azarkin, M.; Dremin, I.; Kirakosyan, M.; Leonidov, A.; Mesyats, G.; Rusakov, S. V.; Vinogradov, A.] PN Lebedev Phys Inst, Moscow 117924, Russia.
   [Zhukov, V.; Katkov, I.; Belyaev, A.; Boos, E.; Dubinin, M.; Dudko, L.; Ershov, A.; Gribushin, A.; Klyukhin, V.; Kodolova, O.; Lokhtin, I.; Markina, A.; Obraztsov, S.; Perfilov, M.; Petrushanko, S.; Popov, A.; Sarycheva, L.; Savrin, V.; Snigirev, A.] Moscow MV Lomonosov State Univ, Skobeltsyn Inst Nucl Phys, Moscow, Russia.
   [Azhgirey, I.; Bayshev, I.; Bitioukov, S.; Grishin, V.; Kachanov, V.; Konstantinov, D.; Krychkine, V.; Petrov, V.; Ryutin, R.; Sobol, A.; Tourtchanovitch, L.; Troshin, S.; Tyurin, N.; Uzunian, A.; Volkov, A.] State Res Ctr Russian Federat, Inst High Energy Phys, Protvino, Russia.
   [Adzic, P.; Djordjevic, M.; Ekmedzic, M.; Krpic, D.; Milosevic, J.; Milenovic, P.] Univ Belgrade, Fac Phys, Belgrade 11001, Serbia.
   [Adzic, P.; Djordjevic, M.; Ekmedzic, M.; Krpic, D.; Milosevic, J.; Milenovic, P.] Vinca Inst Nucl Sci, Belgrade, Serbia.
   [Aguilar-Benitez, M.; Alcaraz Maestre, J.; Arce, P.; Battilana, C.; Calvo, E.; Cerrada, M.; Chamizo Llatas, M.; Colino, N.; De La Cruz, B.; Delgado Peris, A.; Dominguez Vazquez, D.; Fernandez Bedoya, C.; Fernandez Ramos, J. P.; Ferrando, A.; Flix, J.; Fouz, M. C.; Garcia-Abia, P.; Gonzalez Lopez, O.; Goy Lopez, S.; Hernandez, J. M.; Josa, M. I.; Merino, G.; Puerta Pelayo, J.; Quintario Olmeda, A.; Redondo, I.; Romero, L.; Santaolalla, J.; Soares, M. S.; Willmott, C.] Ctr Invest Energet Medioambientales & Tecnol CIEM, Madrid, Spain.
   [Albajar, C.; Codispoti, G.; de Troconiz, J. F.] Univ Autonoma Madrid, Madrid, Spain.
   [Brun, H.; Cuevas, J.; Fernandez Menendez, J.; Folgueras, S.; Gonzalez Caballero, I.; Lloret Iglesias, L.; Piedra Gomez, J.] Univ Oviedo, Oviedo, Spain.
   [Brochero Cifuentes, J. A.; Cabrillo, I. J.; Calderon, A.; Chuang, S. H.; Duarte Campderros, J.; Felcini, M.; Fernandez, M.; Gomez, G.; Gonzalez Sanchez, J.; Graziano, A.; Jorda, C.; Lopez Virto, A.; Marco, J.; Marco, R.; Martinez Rivero, C.; Matorras, F.; Munoz Sanchez, F. J.; Rodrigo, T.; Rodriguez-Marrero, A. Y.; Ruiz-Jimeno, A.; Scodellaro, L.; Vila, I.; Vilar Cortabitarte, R.] Univ Cantabria, CSIC, Inst Fis Cantabria IFCA, E-39005 Santander, Spain.
   [Rabady, D.; Genchev, V.; Iaydjiev, P.; Chierici, R.; Lingemann, J.; Guthoff, M.; Hartmann, F.; Hauth, T.; Mohanty, A. K.; Calabria, C.; De Filippis, N.; Meneghelli, M.; Di Matteo, L.; Gennai, S.; Lucchini, M. T.; De Cosa, A.; Meola, S.; Paolucci, P.; Bacchetta, N.; Branca, A.; D'Agnolo, R. T.; Fiori, F.; Squillacioti, P.; Grassi, M.; Meridiani, P.; Mariotti, C.; Musich, M.; Cossutti, F.; Marone, M.; Seixas, J.; Grishin, V.; Abbaneo, D.; Auffray, E.; Auzinger, G.; Bachtis, M.; Baillon, P.; Ball, A. H.; Barney, D.; Bendavid, J.; Benitez, J. F.; Bernet, C.; Bianchi, G.; Bloch, P.; Bocci, A.; Bonato, A.; Botta, C.; Breuker, H.; Camporesi, T.; Cerminara, G.; Christiansen, T.; Perez, J. A. Coarasa; d'Enterria, D.; Dabrowski, A.; De Roeck, A.; De Visscher, S.; Di Guida, S.; Dobson, M.; Dupont-Sagorin, N.; Elliott-Peisert, A.; Eugster, J.; Frisch, B.; Funk, W.; Georgiou, G.; Giffels, M.; Gigi, D.; Gill, K.; Giordano, D.; Girone, M.; Giunta, M.; Glege, F.; Garrido, R. Gomez-Reino; Govoni, P.; Gowdy, S.; Guida, R.; Hammer, J.; Hansen, M.; Harris, P.; Hartl, C.; Harvey, J.; Hegner, B.; Hinzmann, A.; Innocente, V.; Janot, P.; Kaadze, K.; Karavakis, E.; Kousouris, K.; Krajczar, K.; Lecoq, P.; Lee, Y. -J.; Lenzi, P.; Lourenco, C.; Magini, N.; Maeki, T.; Malberti, M.; Malgeri, L.; Mannelli, M.; Masetti, L.; Meijers, F.; Mersi, S.; Meschi, E.; Moser, R.; Mulders, M.; Musella, P.; Nesvold, E.; Orsini, L.; Cortezon, E. Palencia; Perez, E.; Perrozzi, L.; Petrilli, A.; Pfeiffer, A.; Pierini, M.; Pimiae, M.; Piparo, D.; Polese, G.; Quertenmont, L.; Racz, A.; Reece, W.; Antunes, J. Rodrigues; Rolandi, G.; Rovelli, C.; Rovere, M.; Sakulin, H.; Santanastasio, F.; Schaefer, C.; Schwick, C.; Segoni, I.; Sekmen, S.; Sharma, A.; Siegrist, P.; Silva, P.; Simon, M.; Sphicas, P.; Spiga, D.; Tsirou, A.; Veres, G. I.; Vlimant, J. R.; Woehri, H. K.; Worm, S. D.; Zeuner, W. D.] CERN, European Org Nucl Res, CH-1211 Geneva, Switzerland.
   [Stahl, A.; Bertl, W.; Deiters, K.; Erdmann, W.; Gabathuler, K.; Horisberger, R.; Ingram, Q.; Kaestli, H. C.; Koenig, S.; Kotlinski, D.; Langenegger, U.; Meier, F.; Renker, D.; Rohe, T.; Naegeli, C.] Paul Scherrer Inst, Villigen, Switzerland.
   [Bachmair, F.; Baeni, L.; Bortignon, P.; Buchmann, M. A.; Casal, B.; Chanon, N.; Deisher, A.; Dissertori, G.; Dittmar, M.; Donega, M.; Duenser, M.; Eller, P.; Freudenreich, K.; Grab, C.; Hits, D.; Lecomte, P.; Lustermann, W.; Marini, A. C.; del Arbol, P. Martinez Ruiz; Mohr, N.; Moortgat, F.; Naegeli, C.; Nef, P.; Nessi-Tedaldi, F.; Pandolfi, F.; Pape, L.; Pauss, F.; Peruzzi, M.; Ronga, F. J.; Rossini, M.; Sala, L.; Sanchez, A. K.; Starodumov, A.; Stieger, B.; Takahashi, M.; Tauscher, L.; Thea, A.; Theofilatos, K.; Treille, D.; Urscheler, C.; Wallny, R.; Weber, H. A.; Wehrli, L.] ETH, Inst Particle Phys, Zurich, Switzerland.
   [Amsler, C.; Chiochia, V.; Favaro, C.; Rikova, M. Ivova; Kilminster, B.; Mejias, B. Millan; Otiougova, P.; Robmann, P.; Snoek, H.; Tupputi, S.; Verzetti, M.] Univ Zurich, Zurich, Switzerland.
   [Cardaci, M.; Chang, Y. H.; Chen, K. H.; Ferro, C.; Kuo, C. M.; Li, S. W.; Lin, W.; Lu, Y. J.; Singh, A. P.; Volpe, R.; Yu, S. S.] Natl Cent Univ, Chungli 32054, Taiwan.
   [Bartalini, P.; Chang, P.; Chang, Y. H.; Chang, Y. W.; Chao, Y.; Chen, K. F.; Dietz, C.; Grundler, U.; Hou, W. -S.; Hsiung, Y.; Kao, K. Y.; Lei, Y. J.; Lu, R. -S.; Majumder, D.; Petrakou, E.; Shi, X.; Shiu, J. G.; Tzeng, Y. M.; Wan, X.; Wang, M.] Natl Taiwan Univ, Taipei 10764, Taiwan.
   [Asavapibhop, B.; Simili, E.; Srimanobhas, N.; Suwonjandee, N.] Chulalongkorn Univ, Bangkok, Thailand.
   [Adiguzel, A.; Bakirci, M. N.; Cerci, S.; Dozen, C.; Dumanoglu, I.; Eskut, E.; Girgis, S.; Gokbulut, G.; Gurpinar, E.; Hos, I.; Kangal, E. E.; Karaman, T.; Karapinar, G.; Topaksu, A. Kayis; Onengut, G.; Ozdemir, K.; Ozturk, S.; Polatoz, A.; Sogut, K.; Cerci, D. Sunar; Tali, B.; Topakli, H.; Vergili, M.] Cukurova Univ, Adana, Turkey.
   [Akin, I. V.; Aliev, T.; Min, B.; Bilmis, S.; Deniz, M.; Gamsizkan, H.; Guler, A. M.; Ocalan, K.; Ozpineci, A.; Serin, M.; Sever, R.; Surat, U. E.; Yalvac, M.; Zeyrek, M.] Middle E Tech Univ, Dept Phys, TR-06531 Ankara, Turkey.
   [Gulmez, E.; Isildak, B.; Kaya, M.; Kaya, O.; Ozkorucuklu, S.; Sonmez, N.] Bogazici Univ, Istanbul, Turkey.
   [Bahtiyar, H.; Barlas, E.; Cankocak, K.; Vardarli, F. I.; Yucel, M.] Istanbul Tech Univ, TR-80626 Istanbul, Turkey.
   [Levchuk, L.] Natl Sci Ctr, Kharkov Phys & Technol Inst, Kharkov, Ukraine.
   [Brooke, J. J.; Clement, E.; Cussans, D.; Flacher, H.; Frazier, R.; Goldstein, J.; Grimes, M.; Heath, G. P.; Heath, H. F.; Kreczko, L.; Metson, S.; Newbold, D. M.; Nirunpong, K.; Poll, A.; Senkin, S.; Smith, V. J.; Williams, T.] Univ Bristol, Bristol, Avon, England.
   [Worm, S. D.; Newbold, D. M.; Basso, L.; Bell, K. W.; Belyaev, A.; Brew, C.; Brown, R. M.; Cockerill, D. J. A.; Coughlan, J. A.; Harder, K.; Harper, S.; Jackson, J.; Kennedy, B. W.; Olaiya, E.; Petyt, D.; Radburn-Smith, B. C.; Shepherd-Themistocleous, C. H.; Tomalin, I. R.; Womersley, W. J.] Rutherford Appleton Lab, Didcot OX11 0QX, Oxon, England.
   [Bainbridge, R.; Ball, G.; Beuselinck, R.; Buchmuller, O.; Colling, D.; Cripps, N.; Cutajar, M.; Dauncey, P.; Davies, G.; Della Negra, M.; Ferguson, W.; Fulcher, J.; Futyan, D.; Gilbert, A.; Bryer, A. Guneratne; Hall, G.; Hatherell, Z.; Hays, J.; Iles, G.; Jarvis, M.; Karapostoli, G.; Kenzie, M.; Lyons, L.; Magnan, A. -M.; Marrouche, J.; Mathias, B.; Nandi, R.; Nash, J.; Nikitenko, A.; Pela, J.; Pesaresi, M.; Petridis, K.; Pioppi, M.; Raymond, D. M.; Rogerson, S.; Rose, A.; Seez, C.; Sharp, P.; Sparrow, A.; Stoye, M.; Tapper, A.; Acosta, M. Vazquez; Virdee, T.; Wakefield, S.; Wardle, N.; Whyntie, T.] Univ London Imperial Coll Sci Technol & Med, London, England.
   [Chadwick, M.; Cole, J. E.; Hobson, P. R.; Khan, A.; Kyberd, P.; Leggat, D.; Leslie, D.; Martin, W.; Reid, I. D.; Symonds, P.; Teodorescu, L.; Turner, M.] Brunel Univ, Uxbridge UB8 3PH, Middx, England.
   [Hatakeyama, K.; Liu, H.; Scarborough, T.] Baylor Univ, Waco, TX 76798 USA.
   [Charaf, O.; Cooper, S. I.; Henderson, C.; Rumerio, P.] Univ Alabama, Tuscaloosa, AL USA.
   [Avetisyan, A.; Bose, T.; Fantasia, C.; Heister, A.; Lawson, P.; Lazic, D.; Rohlf, J.; Sperka, D.; St John, J.; Sulak, L.] Boston Univ, Boston, MA 02215 USA.
   [Alimena, J.; Bhattacharya, S.; Christopher, G.; Cutts, D.; Demiragli, Z.; Ferapontov, A.; Garabedian, A.; Heintz, U.; Jabeen, S.; Kukartsev, G.; Laird, E.; Landsberg, G.; Luk, M.; Narain, M.; Segala, M.; Sinthuprasith, T.; Speer, T.] Brown Univ, Providence, RI 02912 USA.
   [Breedon, R.; Breto, G.; Sanchez, M. Calderon De La Barca; Caulfield, M.; Chauhan, S.; Chertok, M.; Conway, J.; Conway, R.; Cox, P. T.; Dolen, J.; Erbacher, R.; Gardner, M.; Houtz, R.; Ko, W.; Kopecky, A.; Lander, R.; Mall, O.; Miceli, T.; Nelson, R.; Pellett, D.; Ricci-Tam, F.; Rutherford, B.; Searle, M.; Smith, J.; Squires, M.; Tripathi, M.; Sierra, R. Vasquez; Yohay, R.] Univ Calif Davis, Davis, CA 95616 USA.
   [Felcini, M.; Andreev, V.; Cline, D.; Cousins, R.; Duris, J.; Erhan, S.; Everaerts, P.; Farrell, C.; Hauser, J.; Ignatenko, M.; Jarvis, C.; Rakness, G.; Schlein, P.; Traczyk, P.; Valuev, V.; Weber, M.] Univ Calif Los Angeles, Los Angeles, CA USA.
   [Babb, J.; Clare, R.; Dinardo, M. E.; Ellison, J.; Gary, J. W.; Giordano, F.; Hanson, G.; Liu, H.; Long, O. R.; Luthra, A.; Nguyen, H.; Paramesvaran, S.; Sturdy, J.; Sumowidagdo, S.; Wilken, R.; Wimpenny, S.] Univ Calif Riverside, Riverside, CA 92521 USA.
   [Andrews, W.; Branson, J. G.; Cerati, G. B.; Cittolin, S.; Evans, D.; Holzner, A.; Kelley, R.; Lebourgeois, M.; Letts, J.; Macneill, I.; Mangano, B.; Padhi, S.; Palmer, C.; Petrucciani, G.; Pieri, M.; Sani, M.; Sharma, V.; Simon, S.; Sudano, E.; Tadel, M.; Tu, Y.; Vartak, A.; Wasserbaech, S.; Wuerthwein, F.; Yagil, A.; Yoo, J.] Univ Calif San Diego, La Jolla, CA 92093 USA.
   [Barge, D.; Bellan, R.; Campagnari, C.; D'Alfonso, M.; Danielson, T.; Flowers, K.; Geffert, P.; George, C.; Golf, F.; Incandela, J.; Justus, C.; Kalavase, P.; Kovalskyi, D.; Krutelyov, V.; Lowette, S.; Villalba, R. Magana; Mccoll, N.; Pavlunin, V.; Ribnik, J.; Richman, J.; Rossin, R.; Stuart, D.; To, W.; West, C.] Univ Calif Santa Barbara, Santa Barbara, CA 93106 USA.
   [Dias, F. A.; Dubinin, M.; Apresyan, A.; Bornheim, A.; Chen, Y.; Di Marco, E.; Duarte, J.; Gataullin, M.; Ma, Y.; Mott, A.; Newman, H. B.; Rogan, C.; Spiropulu, M.; Timciuc, V.; Veverka, J.; Wilkinson, R.; Xie, S.; Yang, Y.; Zhu, R. Y.] CALTECH, Pasadena, CA 91125 USA.
   [Azzolini, V.; Calamba, A.; Carroll, R.; Ferguson, T.; Iiyama, Y.; Jang, D. W.; Liu, Y. F.; Paulini, M.; Vogel, H.; Vorobiev, I.] Carnegie Mellon Univ, Pittsburgh, PA 15213 USA.
   [Cumalat, J. P.; Drell, B. R.; Ford, W. T.; Gaz, A.; Lopez, E. Luiggi; Smith, J. G.; Stenson, K.; Ulmer, K. A.; Wagner, S. R.] Univ Colorado, Boulder, CO 80309 USA.
   [Alexander, J.; Chatterjee, A.; Eggert, N.; Gibbons, L. K.; Heltsley, B.; Hopkins, W.; Khukhunaishvili, A.; Kreis, B.; Mirman, N.; Kaufman, G. Nicolas; Patterson, J. R.; Ryd, A.; Salvati, E.; Sun, W.; Teo, W. D.; Thom, J.; Thompson, J.; Tucker, J.; Weng, Y.; Winstrom, L.; Wittich, P.] Cornell Univ, Ithaca, NY USA.
   [Winn, D.] Fairfield Univ, Fairfield, CT 06430 USA.
   [Abdullin, S.; Albrow, M.; Anderson, J.; Apollinari, G.; Bauerdick, L. A. T.; Beretvas, A.; Berryhill, J.; Bhat, P. C.; Burkett, K.; Butler, J. N.; Chetluru, V.; Cheung, H. W. K.; Chlebana, E.; Elvira, V. D.; Fisk, I.; Freeman, J.; Gao, Y.; Green, D.; Gutsche, O.; Hanlon, J.; Harris, R. M.; Hirschauer, J.; Hooberman, B.; Jindariani, S.; Johnson, M.; Joshi, U.; Klima, B.; Kunori, S.; Kwan, S.; Leonidopoulos, C.; Linacre, J.; Lincoln, D.; Lipton, R.; Lykken, J.; Maeshima, K.; Marraffino, J. M.; Outschoorn, V. I. Martinez; Maruyama, S.; Mason, D.; McBride, P.; Mishra, K.; Mrenna, S.; Musienko, Y.; Newman-Holmes, C.; O'Dell, V.; Sexton-Kennedy, E.; Sharma, S.; Spalding, W. J.; Spiegel, L.; Taylor, L.; Tkaczyk, S.; Tran, N. V.; Uplegger, L.; Vaandering, E. W.; Vidal, R.; Whitmore, J.; Wu, W.; Yang, F.; Yun, J. C.] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA.
   [Acosta, D.; Avery, P.; Bourilkov, D.; Chen, M.; Cheng, T.; Das, S.; De Gruttola, M.; Di Giovanni, G. P.; Dobur, D.; Drozdetskiy, A.; Field, R. D.; Fisher, M.; Fu, Y.; Furic, I. K.; Gartner, J.; Hugon, J.; Kim, B.; Konigsberg, J.; Korytov, A.; Kropivnitskaya, A.; Kypreos, T.; Low, J. F.; Matchev, K.; Milenovic, P.; Mitselmakher, G.; Muniz, L.; Remington, R.; Rinkevicius, A.; Skhirtladze, N.; Snowball, M.; Yelton, J.; Zakaria, M.] Univ Florida, Gainesville, FL USA.
   [Gaultney, V.; Hewamanage, S.; Lebolo, L. M.; Linn, S.; Markowitz, P.; Martinez, G.; Rodriguez, J. L.] Florida Int Univ, Miami, FL 33199 USA.
   [Adams, T.; Askew, A.; Bochenek, J.; Chen, J.; Diamond, B.; Gleyzer, S. V.; Haas, J.; Hagopian, S.; Hagopian, V.; Jenkins, M.; Johnson, K. F.; Prosper, H.; Veeraraghavan, V.; Weinberg, M.] Florida State Univ, Tallahassee, FL 32306 USA.
   [Baarmand, M. M.; Dorney, B.; Hohlmann, M.; Kalakhety, H.; Vodopiyanov, I.; Yumiceva, K.] Florida Inst Technol, Melbourne, FL 32901 USA.
   [Adams, M. R.; Apanasevich, L.; Bai, Y.; Bazterra, V. E.; Betts, R. R.; Bucinskaite, I.; Callner, J.; Cavanaugh, R.; Evdokimov, O.; Gauthier, L.; Gerber, C. E.; Hofman, D. J.; Khalatyan, S.; Lacroix, F.; O'Brien, C.; Silkworth, C.; Strom, D.; Turner, P.; Varelas, N.] Univ Illinois Chicago UIC, Chicago, IL USA.
   [Ozturk, S.; Akgun, U.; Albayrak, E. A.; Bilki, B.; Clarida, W.; Dilsiz, K.; Duru, F.; Griffiths, S.; Merlo, J. -P.; Mermerkaya, H.; Mestvirishvili, A.; Moeller, A.; Nachtman, J.; Newsom, C. R.; Norbeck, E.; Ogul, H.; Onel, Y.; Ozok, F.; Sen, S.; Tan, P.; Tiras, E.; Wetzel, J.; Yetkin, T.; Yi, K.] Univ Iowa, Iowa City, IA USA.
   [Barnett, B. A.; Blumenfeld, B.; Bolognesi, S.; Fehling, D.; Giurgiu, G.; Gritsan, A. V.; Guo, Z. J.; Hu, G.; Maksimovic, P.; Swartz, M.; Whitbeck, A.] Johns Hopkins Univ, Baltimore, MD USA.
   [Sibille, J.; Baringer, P.; Bean, A.; Benelli, G.; Kenny, R. P., III; Murray, M.; Noonan, D.; Sanders, S.; Stringer, R.; Tinti, G.; Wood, J. S.] Univ Kansas, Lawrence, KS 66045 USA.
   [Barfuss, A. F.; Bolton, T.; Chakaberia, I.; Ivanov, A.; Khalil, S.; Makouski, M.; Maravin, Y.; Shrestha, S.; Svintradze, I.] Kansas State Univ, New York, NY USA.
   [Gronberg, J.; Lange, D.; Rebassoo, F.; Wright, D.] Lawrence Livermore Natl Lab, Livermore, CA USA.
   [Baden, A.; Calvert, B.; Eno, S. C.; Gomez, J. A.; Hadley, N. J.; Kellogg, R. G.; Kirn, M.; Kolberg, T.; Lu, Y.; Marionneau, M.; Mignerey, A. C.; Pedro, K.; Peterman, A.; Skuja, A.; Temple, J.; Tonjes, M. B.; Tonwar, S. C.] Univ Maryland, College Pk, MD 20742 USA.
   [Apyan, A.; Bauer, G.; Busza, W.; Butz, E.; Cali, I. A.; Chan, M.; Dutta, V.; Ceballos, G. Gomez; Goncharov, M.; Kim, Y.; Klute, M.; Levin, A.; Luckey, P. D.; Ma, T.; Nahn, S.; Paus, C.; Ralph, D.; Roland, C.; Roland, G.; Stephans, G. S. F.; Stoeckli, F.; Sumorok, K.; Sung, K.; Velicanu, D.; Wenger, E. A.; Wolf, R.; Wyslouch, B.; Yang, M.; Yilmaz, Y.; Yoon, A. S.; Zanetti, M.; Zhukova, V.] MIT, Cambridge, MA 02139 USA.
   [Dahmes, B.; De Benedetti, A.; Franzoni, G.; Gude, A.; Kao, S. C.; Klapoetke, K.; Kubota, Y.; Mans, J.; Pastika, N.; Rusack, R.; Sasseville, M.; Singovsky, A.; Tambe, N.; Turkewitz, J.] Univ Minnesota, Minneapolis, MN USA.
   [Cremaldi, L. M.; Kroeger, R.; Perera, L.; Rahmat, R.; Sanders, D. A.] Univ Mississippi, Oxford, MS USA.
   [Avdeeva, E.; Bloom, K.; Bose, S.; Claes, D. R.; Dominguez, A.; Eads, M.; Keller, J.; Kravchenko, I.; Lazo-Flores, J.; Malik, S.; Snow, G. R.] Univ Nebraska, Lincoln, NE USA.
   [Godshalk, A.; Iashvili, I.; Jain, S.; Kharchilava, A.; Kumar, A.; Rappoccio, S.; Wan, Z.] SUNY Buffalo, Buffalo, NY 14260 USA.
   [Alverson, G.; Barberis, E.; Baumgartel, D.; Chasco, M.; Haley, J.; Nash, D.; Orimoto, T.; Trocino, D.; Wood, D.; Zhang, J.] Northeastern Univ, Boston, MA 02115 USA.
   [Anastassov, A.; Hahn, K. A.; Kubik, A.; Lusito, L.; Mucia, N.; Odell, N.; Ofierzynski, R. A.; Pollack, B.; Pozdnyakov, A.; Schmitt, M.; Stoynev, S.; Velasco, M.; Won, S.] Northwestern Univ, Evanston, IL USA.
   [Berry, D.; Brinkerhoff, A.; Chan, K. M.; Hildreth, M.; Jessop, C.; Karmgard, D. J.; Kolb, J.; Lannon, K.; Luo, W.; Lynch, S.; Marinelli, N.; Morse, D. M.; Pearson, T.; Planer, M.; Ruchti, R.; Slaunwhite, J.; Valls, N.; Wayne, M.; Wolf, M.] Univ Notre Dame, Notre Dame, IN 46556 USA.
   [Antonelli, L.; Bylsma, B.; Durkin, L. S.; Hill, C.; Hughes, R.; Kotov, K.; Ling, T. Y.; Puigh, D.; Rodenburg, M.; Smith, G.; Vuosalo, C.; Williams, G.; Winer, B. L.] Ohio State Univ, Columbus, OH 43210 USA.
   [Berry, E.; Elmer, P.; Halyo, V.; Hebda, P.; Hegeman, J.; Hunt, A.; Jindal, P.; Koay, S. A.; Pegna, D. Lopes; Lujan, P.; Marlow, D.; Medvedeva, T.; Mooney, M.; Olsen, J.; Piroue, P.; Quan, X.; Raval, A.; Saka, H.; Stickland, D.; Tully, C.; Werner, J. S.; Zenz, S. C.; Zuranski, A.] Princeton Univ, Princeton, NJ 08544 USA.
   [Brownson, E.; Lopez, A.; Mendez, H.; Vargas, J. E. Ramirez] Univ Puerto Rico, Mayaguez, PR USA.
   [Alagoz, E.; Barnes, V. E.; Benedetti, D.; Bolla, G.; Bortoletto, D.; De Mattia, M.; Everett, A.; Hu, Z.; Jones, M.; Koybasi, O.; Kress, M.; Laasanen, A. T.; Leonardo, N.; Maroussov, V.; Merkel, P.; Miller, D. H.; Neumeister, N.; Shipsey, I.; Silvers, D.; Svyatkovskiy, A.; Marono, M. Vidal; Yoo, H. D.; Zablocki, J.; Zheng, Y.] Purdue Univ, W Lafayette, IN 47907 USA.
   [Guragain, S.; Parashar, N.] Purdue Univ Calumet, Hammond, IN USA.
   [Adair, A.; Akgun, B.; Boulahouache, C.; Ecklund, K. M.; Geurts, F. J. M.; Li, W.; Padley, B. P.; Redjimi, R.; Roberts, J.; Zabel, J.] Rice Univ, Houston, TX USA.
   [Betchart, B.; Bodek, A.; Chung, Y. S.; Covarelli, R.; de Barbaro, P.; Demina, R.; Eshaq, Y.; Ferbel, T.; Garcia-Bellido, A.; Goldenzweig, P.; Han, J.; Harel, A.; Miner, D. C.; Vishnevskiy, D.; Zielinski, M.] Univ Rochester, Rochester, NY USA.
   [Bhatti, A.; Ciesielski, R.; Demortier, L.; Goulianos, K.; Lungu, G.; Malik, S.; Mesropian, C.] Rockefeller Univ, New York, NY 10021 USA.
   [Arora, S.; Barker, A.; Chou, J. P.; Contreras-Campana, C.; Contreras-Campana, E.; Duggan, D.; Ferencek, D.; Gershtein, Y.; Gray, R.; Halkiadakis, E.; Hidas, D.; Lath, A.; Panwalkar, S.; Park, M.; Patel, R.; Rekovic, V.; Robles, J.; Rose, K.; Salur, S.; Schnetzer, S.; Seitz, C.; Somalwar, S.; Stone, R.; Thomas, S.; Walker, M.] Rutgers State Univ, Piscataway, NJ USA.
   [Cerizza, G.; Hollingsworth, M.; Spanier, S.; Yang, Z. C.; York, A.] Univ Tennessee, Knoxville, TN USA.
   [Eusebi, R.; Flanagan, W.; Gilmore, J.; Kamon, T.; Khotilovich, V.; Montalvo, R.; Osipenkov, I.; Pakhotin, Y.; Perloff, A.; Roe, J.; Safonov, A.; Sakuma, T.; Sengupta, S.; Suarez, I.; Tatarinov, A.; Toback, D.] Texas A&M Univ, College Stn, TX USA.
   [Akchurin, N.; Damgov, J.; Dragoiu, C.; Dudero, P. R.; Jeong, C.; Kovitanggoon, K.; Lee, S. W.; Libeiro, T.; Volobouev, I.] Texas Tech Univ, Lubbock, TX 79409 USA.
   [Appelt, E.; Delannoy, A. G.; Florez, C.; Greene, S.; Gurrola, A.; Johns, W.; Kurt, P.; Maguire, C.; Melo, A.; Sharma, M.; Sheldon, P.; Snook, B.; Tuo, S.; Velkovska, J.] Vanderbilt Univ, Nashville, TN USA.
   [Arenton, M. W.; Balazs, M.; Boutle, S.; Cox, B.; Francis, B.; Goodell, J.; Hirosky, R.; Ledovskoy, A.; Lin, C.; Neu, C.; Wood, J.] Univ Virginia, Charlottesville, VA USA.
   [Gollapinni, S.; Harr, R.; Karchin, P. E.; Don, C. Kottachchi Kankanamge; Lamichhane, P.; Sakharov, A.] Wayne State Univ, Detroit, MI USA.
   [Anderson, M.; Belknap, D. A.; Borrello, L.; Carlsmith, D.; Cepeda, M.; Dasu, S.; Friis, E.; Gray, L.; Grogg, K. S.; Grothe, M.; Hall-Wilton, R.; Herndon, M.; Herve, A.; Klabbers, P.; Klukas, J.; Lanaro, A.; Lazaridis, C.; Loveless, R.; Mohapatra, A.; Mozer, M. U.; Ojalvo, I.; Palmonari, F.; Pierro, G. A.; Ross, I.; Savin, A.; Smith, W. H.; Swanson, J.] Univ Wisconsin, Madison, WI USA.
   [Fabjan, C.; Fruehwirth, R.; Jeitler, M.; Krammer, M.; Wulz, C. -E.] Vienna Univ Technol, A-1040 Vienna, Austria.
   [Chinellato, J.; Tonelli Manganote, E. J.] Univ Estadual Campinas, Campinas, SP, Brazil.
   [Assran, Y.] Suez Canal Univ, Suez, Egypt.
   [Elgammal, S.] Zewail City Sci & Technol, Zewail, Egypt.
   [Kamel, A. Ellithi] Cairo Univ, Cairo, Egypt.
   [Awad, A. M. Kuotb; Mahmoud, M. A.] Fayoum Univ, Al Fayyum, Egypt.
   [Radi, A.] British Univ Egypt, Cairo, Egypt.
   [Agram, J. -L.; Conte, E.; Drouhin, F.; Fontaine, J. -C.] Univ Haute Alsace, Mulhouse, France.
   [Bergholz, M.; Lohmann, W.; Schmidt, R.] Brandenburg Tech Univ Cottbus, Cottbus, Germany.
   [Vesztergombi, G.; Veres, G. I.] Eotvos Lorand Univ, Budapest, Hungary.
   [Maity, M.] Visva Bharati Univ, Santini Ketan, W Bengal, India.
   [Arfaei, H.; Fahim, A.] Sharif Univ Technol, Tehran, Iran.
   [Etesami, S. M.] Isfahan Univ Technol, Esfahan, Iran.
   [Hashemi, M.] Shiraz Univ, Shiraz, Iran.
   [Safarzadeh, B.] Islamic Azad Univ, Plasma Phys Res Ctr, Sci & Res Branch, Tehran, Iran.
   [Colafranceschi, S.] Univ Rome, Fac Ingn, Rome, Italy.
   [Martini, L.] Univ Siena, I-53100 Siena, Italy.
   [Serban, A. T.] Univ Bucharest, Fac Phys, Bucharest, Romania.
   [Amsler, C.] Albert Einstein Ctr Fundamental Phys, Bern, Switzerland.
   [Bakirci, M. N.; Topakli, H.] Gaziosmanpasa Univ, Tokat, Turkey.
   [Cerci, S.; Cerci, D. Sunar; Tali, B.] Adiyaman Univ, Adiyaman, Turkey.
   [Karapinar, G.] Izmir Inst Technol, Izmir, Turkey.
   [Sogut, K.] Mersin Univ, Mersin, Turkey.
   [Isildak, B.] Ozyegin Univ, Istanbul, Turkey.
   [Kaya, M.; Kaya, O.] Kafkas Univ, Kars, Turkey.
   [Ozkorucuklu, S.] Suleyman Demirel Univ, TR-32200 Isparta, Turkey.
   [Sonmez, N.] Ege Univ, Izmir, Turkey.
   [Bahtiyar, H.; Ozok, F.] Mimar Sinan Univ, Istanbul, Turkey.
   [Gunaydin, Y. O.] Kahramanmaras Sutcu Imam Univ, TR-46050 Kahramanmaras, Turkey.
   [Basso, L.; Belyaev, A.] Univ Southampton, Sch Phys & Astron, Southampton, Hants, England.
   [Wasserbaech, S.] Utah Valley Univ, Orem, UT USA.
   [Bilki, B.] Argonne Natl Lab, Argonne, IL 60439 USA.
   [Mermerkaya, H.] Erzincan Univ, Erzincan, Turkey.
   [CMS Collaboration] CERN, CH-1211 Geneva 23, Switzerland.
RP Alverson, G (reprint author), Northeastern Univ, Boston, MA 02115 USA.
EM George.Alverson@cern.ch
RI Vilela Pereira, Antonio/L-4142-2016; Sznajder, Andre/L-1621-2016; Xie,
   Si/O-6830-2016; Leonardo, Nuno/M-6940-2016; Goh, Junghwan/Q-3720-2016;
   Ruiz, Alberto/E-4473-2011; Govoni, Pietro/K-9619-2016; Yazgan,
   Efe/C-4521-2014; Inst. of Physics, Gleb Wataghin/A-9780-2017; Leonidov,
   Andrey/M-4440-2013; Andreev, Vladimir/M-8665-2015; TUVE',
   Cristina/P-3933-2015; KIM, Tae Jeong/P-7848-2015; Arce,
   Pedro/L-1268-2014; Flix, Josep/G-5414-2012; Della Ricca,
   Giuseppe/B-6826-2013; Azarkin, Maxim/N-2578-2015; Dubinin,
   Mikhail/I-3942-2016; Paganoni, Marco/A-4235-2016; Kirakosyan,
   Martin/N-2701-2015; Gulmez, Erhan/P-9518-2015; Seixas, Joao/F-5441-2013;
   Lazzizzera, Ignazio/E-9678-2015; Sen, Sercan/C-6473-2014; D'Alessandro,
   Raffaello/F-5897-2015; Belyaev, Alexander/F-6637-2015; Stahl,
   Achim/E-8846-2011; Trocsanyi, Zoltan/A-5598-2009; Konecki,
   Marcin/G-4164-2015; Bedoya, Cristina/K-8066-2014; Matorras,
   Francisco/I-4983-2015; My, Salvatore/I-5160-2015; Rovelli,
   Tiziano/K-4432-2015; Dremin, Igor/K-8053-2015; Hoorani,
   Hafeez/D-1791-2013; Josa, Isabel/K-5184-2014; Calvo Alamillo,
   Enrique/L-1203-2014; VARDARLI, Fuat Ilkehan/B-6360-2013; Paulini,
   Manfred/N-7794-2014; Vogel, Helmut/N-8882-2014; Ferguson,
   Thomas/O-3444-2014; Ragazzi, Stefano/D-2463-2009; Benussi,
   Luigi/O-9684-2014; Leonidov, Andrey/P-3197-2014; vilar,
   rocio/P-8480-2014; Dahms, Torsten/A-8453-2015; Grandi,
   Claudio/B-5654-2015; Raidal, Martti/F-4436-2012; Santoro,
   Alberto/E-7932-2014; Ligabue, Franco/F-3432-2014; Wulz,
   Claudia-Elisabeth/H-5657-2011; Codispoti, Giuseppe/F-6574-2014;
   Gunaydin, Yusuf/F-7300-2014; Montanari, Alessandro/J-2420-2012;
   Gribushin, Andrei/J-4225-2012; Cerrada, Marcos/J-6934-2014; Calderon,
   Alicia/K-3658-2014; de la Cruz, Begona/K-7552-2014; Scodellaro,
   Luca/K-9091-2014; Manganote, Edmilson/K-8251-2013; Wimpenny,
   Stephen/K-8848-2013; Markina, Anastasia/E-3390-2012; Dudko,
   Lev/D-7127-2012; Tinoco Mendes, Andre David/D-4314-2011; Wolszczak,
   Weronika/N-3113-2013; Marlow, Daniel/C-9132-2014; de Jesus Damiao,
   Dilson/G-6218-2012; Janssen, Xavier/E-1915-2013; Novaes,
   Sergio/D-3532-2012; Bartalini, Paolo/E-2512-2014; Alves,
   Gilvan/C-4007-2013; Ivanov, Andrew/A-7982-2013; Tinti,
   Gemma/I-5886-2013; Hill, Christopher/B-5371-2012; Liu,
   Sheng/K-2815-2013; Zhukov, Valery/K-3615-2013; Lokhtin,
   Igor/D-7004-2012; Petrushanko, Sergey/D-6880-2012; Tomei,
   Thiago/E-7091-2012; Zalewski, Piotr/H-7335-2013; Cavallo,
   Nicola/F-8913-2012; Mundim, Luiz/A-1291-2012; Kodolova,
   Olga/D-7158-2012; Venturi, Andrea/J-1877-2012
OI Vilela Pereira, Antonio/0000-0003-3177-4626; Sznajder,
   Andre/0000-0001-6998-1108; Xie, Si/0000-0003-2509-5731; Leonardo,
   Nuno/0000-0002-9746-4594; Goh, Junghwan/0000-0002-1129-2083; Ruiz,
   Alberto/0000-0002-3639-0368; Govoni, Pietro/0000-0002-0227-1301; Yazgan,
   Efe/0000-0001-5732-7950; TUVE', Cristina/0000-0003-0739-3153; KIM, Tae
   Jeong/0000-0001-8336-2434; Arce, Pedro/0000-0003-3009-0484; Flix,
   Josep/0000-0003-2688-8047; Della Ricca, Giuseppe/0000-0003-2831-6982;
   Dubinin, Mikhail/0000-0002-7766-7175; Paganoni,
   Marco/0000-0003-2461-275X; Gulmez, Erhan/0000-0002-6353-518X; Seixas,
   Joao/0000-0002-7531-0842; Lazzizzera, Ignazio/0000-0001-5092-7531; Sen,
   Sercan/0000-0001-7325-1087; D'Alessandro, Raffaello/0000-0001-7997-0306;
   Belyaev, Alexander/0000-0002-1733-4408; Stahl,
   Achim/0000-0002-8369-7506; Trocsanyi, Zoltan/0000-0002-2129-1279;
   Konecki, Marcin/0000-0001-9482-4841; Bedoya,
   Cristina/0000-0001-8057-9152; Matorras, Francisco/0000-0003-4295-5668;
   My, Salvatore/0000-0002-9938-2680; Rovelli, Tiziano/0000-0002-9746-4842;
   Calvo Alamillo, Enrique/0000-0002-1100-2963; Paulini,
   Manfred/0000-0002-6714-5787; Vogel, Helmut/0000-0002-6109-3023;
   Ferguson, Thomas/0000-0001-5822-3731; Ragazzi,
   Stefano/0000-0001-8219-2074; Benussi, Luigi/0000-0002-2363-8889; Dahms,
   Torsten/0000-0003-4274-5476; Grandi, Claudio/0000-0001-5998-3070;
   Ligabue, Franco/0000-0002-1549-7107; Wulz,
   Claudia-Elisabeth/0000-0001-9226-5812; Codispoti,
   Giuseppe/0000-0003-0217-7021; Gunaydin, Yusuf/0000-0002-0514-6936;
   Montanari, Alessandro/0000-0003-2748-6373; Cerrada,
   Marcos/0000-0003-0112-1691; Scodellaro, Luca/0000-0002-4974-8330;
   Wimpenny, Stephen/0000-0003-0505-4908; Dudko, Lev/0000-0002-4462-3192;
   Tinoco Mendes, Andre David/0000-0001-5854-7699; de Jesus Damiao,
   Dilson/0000-0002-3769-1680; Novaes, Sergio/0000-0003-0471-8549; Ivanov,
   Andrew/0000-0002-9270-5643; Hill, Christopher/0000-0003-0059-0779;
   Tomei, Thiago/0000-0002-1809-5226; Mundim, Luiz/0000-0001-9964-7805; 
FU BMWF (Austria); FWF (Austria); FNRS (Belgium); FWO (Belgium); CNPq
   (Brazil); CAPES (Brazil); FAPERJ (Brazil); FAPESP (Brazil); MEYS
   (Bulgaria); CAS (China); MoST (China); NSFC (China); COLCIENCIAS
   (Colombia); MSES (Croatia); RPF (Cyprus); MoER; ERDF (Estonia); Academy
   of Finland; MEC; HIP (Finland); CEA; CNRS/IN2P3 (France); BMBF
   (Germany); DFG (Germany); HGF (Germany); GSRT (Greece); OTKA (Hungary);
   NKTH (Hungary); DAE (India); DST (India); IPM (Iran); SFI (Ireland);
   INFN (Italy); NRF (Republic of Korea); WCU (Republic of Korea); LAS
   (Lithuania); CINVESTAV (Mexico); CONACYT (Mexico); SEP (Mexico);
   UASLP-FAI (Mexico); MSI (New Zealand); PAEC (Pakistan); MSHE (Poland);
   NSC (Poland); FCT (Portugal); JINR (Armenia, Belarus, Georgia, Ukraine,
   Uzbekistan); MON (Russia); RosAtom (Russia); RAS (Russia); RFBR
   (Russia); MSTD (Serbia); SEIDI (Spain); CPAN (Spain); Swiss Funding
   Agencies (Switzerland); NSC (Taipei); ThEPCenter (Thailand); IPST
   (Thailand); NSTDA (Thailand); TUBITAK (Turkey); TAEK (Turkey); NASU
   (Ukraine); STFC (United Kingdom); DOE (USA); NSF (USA);  [SF0690030s09]
FX We congratulate our colleagues in the CERN accelerator departments for
   the excellent performance of the LHC and thank the technical and
   administrative staffs at CERN and at other CMS institutes for their
   contributions to the success of the CMS effort. In addition, we
   gratefully acknowledge the computing centers and personnel of the
   Worldwide LHC Computing Grid for delivering so effectively the computing
   infrastructure essential to our analyses. Finally, we acknowledge the
   enduring support for the construction and operation of the LHC and the
   CMS detector provided by the following funding agencies: BMWF and FWF
   (Austria); FNRS and FWO (Belgium); CNPq, CAPES, FAPERJ, and FAPESP
   (Brazil); MEYS (Bulgaria); CERN; CAS, MoST, and NSFC (China);
   COLCIENCIAS (Colombia); MSES (Croatia); RPF (Cyprus); MoER, SF0690030s09
   and ERDF (Estonia); Academy of Finland, MEC, and HIP (Finland); CEA and
   CNRS/IN2P3 (France); BMBF, DFG, and HGF (Germany); GSRT (Greece); OTKA
   and NKTH (Hungary); DAE and DST (India); IPM (Iran); SFI (Ireland); INFN
   (Italy); NRF and WCU (Republic of Korea); LAS (Lithuania); CINVESTAV,
   CONACYT, SEP, and UASLP-FAI (Mexico); MSI (New Zealand); PAEC
   (Pakistan); MSHE and NSC (Poland); FCT (Portugal); JINR (Armenia,
   Belarus, Georgia, Ukraine, Uzbekistan); MON, RosAtom, RAS and RFBR
   (Russia); MSTD (Serbia); SEIDI and CPAN (Spain); Swiss Funding Agencies
   (Switzerland); NSC (Taipei); ThEPCenter, IPST and NSTDA (Thailand);
   TUBITAK and TAEK (Turkey); NASU (Ukraine); STFC (United Kingdom); DOE
   and NSF (USA).
NR 47
TC 78
Z9 78
U1 7
U2 137
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0370-2693
EI 1873-2445
J9 PHYS LETT B
JI Phys. Lett. B
PD APR 25
PY 2013
VL 721
IS 4-5
BP 190
EP 211
DI 10.1016/j.physletb.2013.03.027
PG 22
WC Astronomy & Astrophysics; Physics, Nuclear; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 132GM
UT WOS:000318055900002
ER

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   Verkheev, A. Y.
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   Wobisch, M.
   Wood, D. R.
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   Yamada, R.
   Yang, S.
   Yasuda, T.
   Yatsunenko, Y. A.
   Ye, W.
   Ye, Z.
   Yin, H.
   Yip, K.
   Youn, S. W.
   Yu, J. M.
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   Zhao, T. G.
   Zhou, B.
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   Zivkovic, L.
CA D0 Collaboration
TI Measurement of the combined rapidity and p(T) dependence of dijet
   azimuthal decorrelations in p(p)over-bar collisions at root s=1.96 TeV
SO PHYSICS LETTERS B
LA English
DT Article
ID PARTON DISTRIBUTIONS; CROSS-SECTIONS; 3-JET; LHC
AB We present the first combined measurement of the rapidity and transverse momentum dependence of dijet azimuthal decorrelations, using the recently proposed quantity R-Delta phi. The variable R-Delta phi measures the fraction of the inclusive dijet events in which the azimuthal separation of the two jets with the highest transverse momenta is less than a specified value of the parameter Delta phi(max). The quantity R-Delta phi is measured in p (p) over bar collisions at root s = 1.96 TeV, as a function of the dijet rapidity interval, the total scalar transverse momentum, and Delta phi(max). The measurement uses an event sample corresponding to an integrated luminosity of 0.7 fb(-1) collected with the DO detector at the Fermilab Tevatron Collider. The results are compared to predictions of a perturbative QCD calculation at next-to-leading order in the strong coupling with corrections for non-perturbative effects. The theory predictions describe the data well, except in the kinematic region of large dijet rapidity intervals and small Delta phi(max). (C) 2013 Elsevier B.V. All rights reserved.
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   [Iashvili, I.; Kharchilava, A.; Kumar, A.; Smith, K. J.; Zennamo, J.] SUNY Buffalo, Buffalo, NY 14260 USA.
   [Demina, R.; Ferbel, T.; Garcia-Bellido, A.; Ginther, G.; Harel, A.; Petrillo, G.; Slattery, P.; Tsai, Y. -T.; Zielinski, M.] Univ Rochester, Rochester, NY 14627 USA.
   [Boline, D.; Chakrabarti, S.; Grannis, P. D.; Hobbs, J. D.; de Sa, R. Lopes; McCarthy, R.; Schamberger, R. D.; Tsybychev, D.; Ye, W.] SUNY Stony Brook, Stony Brook, NY 11794 USA.
   [Patwa, A.; Pleier, M. -A.; Snyder, S.; Yip, K.] Brookhaven Natl Lab, Upton, NY 11973 USA.
   [Snow, J.] Langston Univ, Langston, OK 73050 USA.
   [Abbott, B.; Gutierrez, P.; Jayasinghe, A.; Severini, H.; Skubic, P.; Strauss, M.; Svoisky, P.] Univ Oklahoma, Norman, OK 73019 USA.
   [Hegab, H.; Khanov, A.; Rizatdinova, F.] Oklahoma State Univ, Stillwater, OK 74078 USA.
   [Cutts, D.; Heintz, U.; Jabeen, S.; Landsberg, G.; Narain, M.; Parihar, V.; Partridge, R.] Brown Univ, Providence, RI 02912 USA.
   [Brandt, A.; Howley, I.; Pal, A.; White, A.] Univ Texas Arlington, Arlington, TX 76019 USA.
   [Ilchenko, Y.; Kehoe, R.; Liu, H.; Renkel, P.] So Methodist Univ, Dallas, TX 75275 USA.
   [Chandra, A.; Corcoran, M.; Hogan, J.; Orduna, J.; Prewitt, M.] Rice Univ, Houston, TX 77005 USA.
   [Hirosky, R.; Li, H.; Mulhearn, M.; Nguyen, H. T.] Univ Virginia, Charlottesville, VA 22904 USA.
   [Watts, G.] Univ Washington, Seattle, WA 98195 USA.
   [Alton, A.] Augustana Coll, Sioux Falls, SD USA.
   [Burdin, S.] Univ Liverpool, Liverpool L69 3BX, Merseyside, England.
   [Garcia-Guerra, G. A.] UPIITA IPN, Mexico City, DF, Mexico.
   [Deterre, C.; Grohsjean, A.] DESY, Hamburg, Germany.
   [Partridge, R.] SLAC, Menlo Pk, CA USA.
   [Hesketh, G.] UCL, London, England.
   [Luna-Garcia, R.] IPN, Ctr Invest Computac, Mexico City 07738, DF, Mexico.
   [Podesta-Lerma, P. L. M.] Univ Autonoma Sinaloa, ECFM, Culiacan, Mexico.
   [Santos, A. S.] Univ Estadual Paulista, Sao Paulo, Brazil.
RP Abazov, VM (reprint author), Joint Inst Nucl Res, Dubna, Russia.
RI Li, Liang/O-1107-2015; Gutierrez, Phillip/C-1161-2011; Merkin,
   Mikhail/D-6809-2012; Chakravarthula, Kiran/Q-3470-2016; Santos,
   Angelo/K-5552-2012; Shabalina, Elizaveta/M-2227-2013; Dudko,
   Lev/D-7127-2012; Fisher, Wade/N-4491-2013; Deliot, Frederic/F-3321-2014;
   Sharyy, Viatcheslav/F-9057-2014; Lokajicek, Milos/G-7800-2014; Kupco,
   Alexander/G-9713-2014; Kozelov, Alexander/J-3812-2014; Lei,
   Xiaowen/O-4348-2014
OI Li, Liang/0000-0001-6411-6107; Chakravarthula,
   Kiran/0000-0002-0859-0485; Dudko, Lev/0000-0002-4462-3192; Sharyy,
   Viatcheslav/0000-0002-7161-2616; Lei, Xiaowen/0000-0002-2564-8351
FU DOE (USA); NSF (USA); CEA, (France); CNRS/IN2P3, (France); MON (Russia);
   NRC KI (Russia); RFBR (Russia); CNPq (Brazil); FAPERJ (Brazil); FAPESP
   (Brazil); FUNDUNESP (Brazil); DAE (India); DST (India); Colciencias
   (Colombia); CONACyT (Mexico); NRF (Korea); FOM (The Netherlands); STFC
   (United Kingdom); Royal Society (United Kingdom); MSMT (Czech Republic);
   GACR (Czech Republic); BMBF (Germany); DFG (Germany); SFI (Ireland);
   Swedish Research Council (Sweden); CAS (China); CNSF (China)
FX We thank the staffs at Fermi lab and collaborating institutions, and
   acknowledge support from the DOE and NSF (USA); CEA and CNRS/IN2P3,
   (France); MON, NRC KI and RFBR (Russia); CNPq, FAPERJ, FAPESP and
   FUNDUNESP (Brazil); DAE and DST (India); Colciencias (Colombia); CONACyT
   (Mexico); NRF (Korea); FOM (The Netherlands); STFC and the Royal Society
   (United Kingdom); MSMT and GACR (Czech Republic); BMBF and DFG
   (Germany); SFI (Ireland); The Swedish Research Council (Sweden); and CAS
   and CNSF (China).
NR 32
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U1 0
U2 21
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0370-2693
EI 1873-2445
J9 PHYS LETT B
JI Phys. Lett. B
PD APR 25
PY 2013
VL 721
IS 4-5
BP 212
EP 219
DI 10.1016/j.physletb.2013.03.029
PG 8
WC Astronomy & Astrophysics; Physics, Nuclear; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 132GM
UT WOS:000318055900003
ER

PT J
AU Al Falou, H
   Kanungo, R
   Andreoiu, C
   Cross, DS
   Davids, B
   Djongolov, M
   Gallant, AT
   Galinski, N
   Howell, D
   Kshetri, R
   Niamir, D
   Orce, JN
   Shotter, AC
   Sjue, S
   Tanihata, I
   Thompson, IJ
   Triambak, S
   Uchida, M
   Walden, P
   Wiringa, RB
AF Al Falou, H.
   Kanungo, R.
   Andreoiu, C.
   Cross, D. S.
   Davids, B.
   Djongolov, M.
   Gallant, A. T.
   Galinski, N.
   Howell, D.
   Kshetri, R.
   Niamir, D.
   Orce, J. N.
   Shotter, A. C.
   Sjue, S.
   Tanihata, I.
   Thompson, I. J.
   Triambak, S.
   Uchida, M.
   Walden, P.
   Wiringa, R. B.
TI Inelastic scattering of Li-9 and excitation mechanism of its first
   excited state
SO PHYSICS LETTERS B
LA English
DT Article
DE Elastic and inelastic scattering; Inverse kinematics; Radioactive beams;
   Nuclear halo
ID NUCLEI
AB The first measurement of inelastic scattering of Li-9 from deuterons at the ISAC facility is reported. The measured angular distribution for the first excited state confirms the nature of excitation to be an E2 transition. The quadrupole deformation parameter is extracted from an analysis of the angular distribution. (C) 2013 Elsevier B.V. All rights reserved.
C1 [Al Falou, H.; Kanungo, R.; Uchida, M.] St Marys Univ, Dept Phys & Astron, Halifax, NS B3H 3C3, Canada.
   [Al Falou, H.; Davids, B.; Djongolov, M.; Gallant, A. T.; Galinski, N.; Howell, D.; Kshetri, R.; Niamir, D.; Orce, J. N.; Sjue, S.; Triambak, S.; Walden, P.] TRIUMF, Vancouver, BC V6T 2A3, Canada.
   [Andreoiu, C.; Cross, D. S.] Simon Fraser Univ, Dept Chem, Burnaby, BC V5A 1S6, Canada.
   [Gallant, A. T.] Univ British Columbia, Dept Phys, Vancouver, BC V6T 1Z4, Canada.
   [Galinski, N.; Howell, D.] Simon Fraser Univ, Dept Phys, Burnaby, BC V5A 1S6, Canada.
   [Orce, J. N.] Univ Western Cape, Dept Phys, ZA-7535 Bellville, South Africa.
   [Shotter, A. C.] Univ Edinburgh, Dept Phys & Astron, Edinburgh, Midlothian, Scotland.
   [Tanihata, I.] Osaka Univ, Nucl Phys Res Ctr, Ibaraki, Osaka 5670047, Japan.
   [Thompson, I. J.] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA.
   [Wiringa, R. B.] Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA.
RP Kanungo, R (reprint author), St Marys Univ, Dept Phys & Astron, Halifax, NS B3H 3C3, Canada.
EM ritu@triumf.ca
RI Wiringa, Robert/M-4970-2015; 
OI Gallant, Aaron/0000-0001-7445-9656
FU National Research Council, Canada; US Department of Energy, Office of
   Nuclear Physics [DE-AC02-06CH11357]; U.S. Department of Energy by
   Lawrence Livermore National Laboratory [DE-AC52-07NA27344]; NSERC
FX The authors thank the TRIUMF accelerator staff and the ISAC beam
   delivery group. The authors gratefully acknowledge NSERC for supporting
   this work. TRIUMF receives federal funding via a contribution agreement
   with the National Research Council, Canada. Discussions with P.D. Kunz
   and his kind guidance with some part of the calculations are gratefully
   acknowledged. The kind help of S.C. Pieper with the PTOLEMY calculations
   is gratefully acknowledged. The work of RBW is supported by the US
   Department of Energy, Office of Nuclear Physics, under contract No.
   DE-AC02-06CH11357. Some calculations in this work was performed under
   the auspices of the U.S. Department of Energy by Lawrence Livermore
   National Laboratory under Contract DE-AC52-07NA27344.
NR 19
TC 2
Z9 2
U1 1
U2 9
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0370-2693
EI 1873-2445
J9 PHYS LETT B
JI Phys. Lett. B
PD APR 25
PY 2013
VL 721
IS 4-5
BP 224
EP 228
DI 10.1016/j.physletb.2013.03.018
PG 5
WC Astronomy & Astrophysics; Physics, Nuclear; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 132GM
UT WOS:000318055900005
ER

PT J
AU Kang, ZB
   Qiu, JW
AF Kang, Zhong-Bo
   Qiu, Jian-Wei
TI Nuclear modification of vector boson production in proton-lead
   collisions at the LHC
SO PHYSICS LETTERS B
LA English
DT Article
ID TRANSVERSE-MOMENTUM DISTRIBUTIONS; QUARK-GLUON PLASMA;
   PARTICLE-PRODUCTION; ROOT-S(NN)=2.76 TEV; QCD; COLLABORATION;
   PERSPECTIVE; SUPPRESSION; RESUMMATION; PP
AB In anticipating the upcoming proton-lead run at the LHC in the near future, we present predictions for the nuclear modification factor of transverse momentum spectrum of Z(0) production and transverse momentum broadening of vector boson (J/psi, gamma, W/Z(0)) production in proton-lead collisions at root s = 5 TeV, respectively. We find that the measurement of nuclear modification factor of Z(0) production provides a clean and unambiguous test of the nuclear anti-shadowing proposed in the recent EPS09. In addition, the dramatic difference in transverse momentum broadening between the heavy quarkonium and W/Z(0) production could be a signature prediction of QCD parton multiple scattering, and it provides valuable information on color neutralization of a produced heavy quark pair when it transmutes into a physical quarkonium. (C) 2013 Elsevier B.V. All rights reserved.
C1 [Kang, Zhong-Bo] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA.
   [Qiu, Jian-Wei] Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA.
   [Qiu, Jian-Wei] SUNY Stony Brook, CN Yang Inst Theoret Phys, Stony Brook, NY 11794 USA.
RP Kang, ZB (reprint author), Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA.
EM zkang@lanl.gov; jqiu@bnl.gov
RI Kang, Zhongbo/P-3645-2014
FU US Department of Energy, Office of Science [DE-AC52-06NA25396,
   DE-AC02-98CH10886]
FX This work was supported in part by the US Department of Energy, Office
   of Science, under Contract Nos. DE-AC52-06NA25396 (Z.K.) and
   DE-AC02-98CH10886 (J.Q.).
NR 49
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U1 0
U2 5
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0370-2693
J9 PHYS LETT B
JI Phys. Lett. B
PD APR 25
PY 2013
VL 721
IS 4-5
BP 277
EP 283
DI 10.1016/j.physletb.2013.03.030
PG 7
WC Astronomy & Astrophysics; Physics, Nuclear; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 132GM
UT WOS:000318055900012
ER

PT J
AU Zhu, ZQ
   Yang, L
   Nie, JL
   Peng, SM
   Long, XG
   Zhou, XS
   Zu, XT
   Gao, F
AF Zhu, Z. Q.
   Yang, L.
   Nie, J. L.
   Peng, S. M.
   Long, X. G.
   Zhou, X. S.
   Zu, X. T.
   Gao, F.
TI Ab initio study of He point defects in fcc Au-Ag alloys
SO JOURNAL OF ALLOYS AND COMPOUNDS
LA English
DT Article
DE Helium; Au-Ag alloy; Ab initio calculation
ID AUGMENTED-WAVE METHOD; PLUTONIUM; METALS
AB The relative stabilities of He defects in two fcc Au-Ag alloys (Au3Ag2 and AuAg) are investigated using ab initio method based on density functional theory. The results show that the stabilities of He defects in the two alloys mainly depend on the atomic arrangements of the nearest neighboring host metals. A He interstitial prefers to stay at a site with more Ag neighboring atoms, while the favorable substitutional site has more Au neighboring atoms in Au-Ag alloys. Moreover, the substitutional He defects are the most stable configurations in both the alloys, and the octahedral He interstitials are energetically more favorable than the tetrahedral interstitials. It is of interest to note that the properties of He defects slightly depend on the mass-density of Au-Ag alloys. The results also demonstrate that the relative stabilities of He defects are primarily attributed to the hybridization between metals d states and He p states. (c) 2013 Elsevier B.V. All rights reserved.
C1 [Zhu, Z. Q.; Yang, L.; Nie, J. L.; Zu, X. T.] Univ Elect Sci & Technol China, Dept Appl Phys, Chengdu 610054, Peoples R China.
   [Peng, S. M.; Long, X. G.; Zhou, X. S.] China Acad Engn Phys, Inst Nucl Phys & Chem, Mianyang 621900, Peoples R China.
   [Gao, F.] Pacific NW Natl Lab, Richland, WA 99352 USA.
RP Yang, L (reprint author), Univ Elect Sci & Technol China, Dept Appl Phys, Chengdu 610054, Peoples R China.
EM yanglildk@uestc.edu.cn; fei.gao@pnnl.gov
FU National Natural Science Foundation of China - NSAF [10976007]; Science
   and Technology Foundation of China Academy of Engineering Physics
   [2010A0301011]; US Department of Fusion Energy Science [DE-AC06-76RLO
   1830]
FX Z.Q. Zhu, L. Yang, J.L. Nie and X.T. Zu are grateful for the support by
   National Natural Science Foundation of China - NSAF (Grant No:
   10976007). S.M. Peng, X.G. Long and X.S. Zhou are grateful for the
   Science and Technology Foundation of China Academy of Engineering
   Physics (Grant No: 2010A0301011). F. Gao is grateful for the support by
   the US Department of Fusion Energy Science under Contract DE-AC06-76RLO
   1830.
NR 21
TC 2
Z9 2
U1 2
U2 45
PU ELSEVIER SCIENCE SA
PI LAUSANNE
PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND
SN 0925-8388
J9 J ALLOY COMPD
JI J. Alloy. Compd.
PD APR 25
PY 2013
VL 557
BP 5
EP 10
DI 10.1016/j.jallcom.2012.12.118
PG 6
WC Chemistry, Physical; Materials Science, Multidisciplinary; Metallurgy &
   Metallurgical Engineering
SC Chemistry; Materials Science; Metallurgy & Metallurgical Engineering
GA 093IL
UT WOS:000315185000002
ER

PT J
AU Mudryk, Y
   Manfrinetti, P
   Smetana, V
   Liu, J
   Fornasini, ML
   Provino, A
   Pecharsky, VK
   Miller, GJ
   Gschneidner, KA
AF Mudryk, Y.
   Manfrinetti, P.
   Smetana, V.
   Liu, J.
   Fornasini, M. L.
   Provino, A.
   Pecharsky, V. K.
   Miller, G. J.
   Gschneidner, K. A., Jr.
TI Structural disorder and magnetism in rare-earth (R) R117Co54+xSn112 +/-
   y
SO JOURNAL OF ALLOYS AND COMPOUNDS
LA English
DT Article
DE Rare earth cobalt stannides; Crystal structure; Electrical transport;
   Magnetic properties
ID CO-SN SYSTEM; CRYSTAL-STRUCTURE; TERNARY-SYSTEM; 773 K; DY; COMPOUND;
   REFINEMENT; STANNIDES; R=GD; TM
AB The cubic R117Co54+xSn112 +/- y compounds (R = La-Lu, except Pm, Eu, and Yb) have been synthesized and characterized using X-ray diffraction and magnetization measurements. The existence of the compounds with R = Ce, Pr, Sm, Gd, Tb, and Dy has been confirmed, while new compounds with R = Y, La, Nd, Ho, Er, Tm, and Lu have been discovered. All of the studied phases adopt the Dy117Co57Sn112-type crystal structures with a giant cubic cell (a similar to 30 angstrom) when the proper heat treatment regime was selected. The lattice parameter decreases from La to Lu, in accordance with the lanthanide contraction and indicating the trivalent state for Ce in Ce117Co54.5Sn115.2. The Co/Sn compositional ratio increases when the size of the R atoms decreases. A single crystal investigation of Gd117Co56.4Sn114.3 confirms extensive structural disorder, particularly around the (1/2, 1/2, 1/2) location of the unit cell (4b site). Such disorder leads to an elongation of the thermal ellipsoids for the atoms surrounding this location. The magnetic measurements of the compounds with R = Ce, Gd and Tb indicate weak magnetic interactions and non-collinear alignment of magnetic moments in the ordered state. The electrical resistivity of Gd117Co56.4Sn114.3 shows interesting behavior with a change of sign at T-C for the d rho/dT parameter. (C) 2013 Elsevier B.V. All rights reserved.
C1 [Mudryk, Y.; Smetana, V.; Liu, J.; Pecharsky, V. K.; Miller, G. J.; Gschneidner, K. A., Jr.] Iowa State Univ, Ames Lab, US DOE, Ames, IA 50011 USA.
   [Manfrinetti, P.; Fornasini, M. L.; Provino, A.] Univ Genoa, Dept Chem, I-16146 Genoa, Italy.
   [Manfrinetti, P.; Provino, A.] CNR SPIN, I-16152 Genoa, Italy.
   [Smetana, V.; Miller, G. J.] Iowa State Univ, Dept Chem, Ames, IA 50011 USA.
   [Liu, J.; Pecharsky, V. K.; Gschneidner, K. A., Jr.] Iowa State Univ, Dept Mat Sci & Engn, Ames, IA 50011 USA.
RP Manfrinetti, P (reprint author), Univ Genoa, Dept Chem, Via Dodecaneso 31, I-16146 Genoa, Italy.
EM chimfis@chimica.unige.it
RI Smetana, Volodymyr/C-1340-2015
FU US Department of Energy [DE-AC02-07CH11358]; Office of Basic Energy
   Sciences, Materials Sciences Division of the Office of Science, U.S.
   Department of Energy
FX The Ames Laboratory is operated by Iowa State University of Science and
   Technology for the US Department of Energy under contract No.
   DE-AC02-07CH11358. Work at Ames Laboratory is supported by the Office of
   Basic Energy Sciences, Materials Sciences Division of the Office of
   Science, U.S. Department of Energy.
NR 26
TC 8
Z9 8
U1 2
U2 32
PU ELSEVIER SCIENCE SA
PI LAUSANNE
PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND
SN 0925-8388
J9 J ALLOY COMPD
JI J. Alloy. Compd.
PD APR 25
PY 2013
VL 557
BP 252
EP 260
DI 10.1016/j.jallcom.2012.12.137
PG 9
WC Chemistry, Physical; Materials Science, Multidisciplinary; Metallurgy &
   Metallurgical Engineering
SC Chemistry; Materials Science; Metallurgy & Metallurgical Engineering
GA 093IL
UT WOS:000315185000040
ER

PT J
AU Zhang, K
   Ben Kenan, RF
   Osakada, Y
   Xu, W
   Sinit, RS
   Chen, L
   Zhao, XB
   Chen, JY
   Cui, BX
   Wu, CB
AF Zhang, Kai
   Ben Kenan, Rotem Fishel
   Osakada, Yasuko
   Xu, Wei
   Sinit, Rachel S.
   Chen, Liang
   Zhao, Xiaobei
   Chen, Jia-Yun
   Cui, Bianxiao
   Wu, Chengbiao
TI Defective Axonal Transport of Rab7 GTPase Results in Dysregulated
   Trophic Signaling
SO JOURNAL OF NEUROSCIENCE
LA English
DT Article
ID MARIE-TOOTH-DISEASE; HEREDITARY SENSORY NEUROPATHIES; INDUCED
   DIFFERENTIATION; AUTONOMIC NEUROPATHIES; RETROGRADE TRANSPORT;
   SYMPATHETIC NEURONS; MOLECULAR-GENETICS; CLINICAL-FEATURES; TRK
   RECEPTORS; ENDOSOMES
AB Retrograde trophic signaling of nerve growth factor (NGF) supports neuronal survival and differentiation. Dysregulated trophic signaling could lead to various neurological disorders. Charcot-Marie-Tooth type 2B (CMT2B) is one of the most common inherited peripheral neuropathies characterized by severe terminal axonal loss. Genetic analysis of human CMT2B patients has revealed four missense point mutations in Rab7, a small GTPase that regulates late endosomal/lysosomal pathways, but the exact pathological mechanism remains poorly understood. Here, we show that these Rab7 mutants dysregulated axonal transport and diminished the retrograde signaling of NGF and its TrkA receptor. We found that all CMT2B Rab7 mutants were transported significantly faster than Rab7(wt) in the anterograde direction, accompanied with an increased percentile of anterograde Rab7-vesicles within axons of rat E15.5 dorsal root ganglion (DRG) neurons. In PC12M cells, the CMT2B Rab7 mutants drastically reduced the level of surface TrkA and NGF binding, presumably by premature degradation of TrkA. On the other hand, siRNA knock-down of endogenous Rab7 led to the appearance of large TrkA puncta in enlarged Rab5-early endosomes within the cytoplasm, suggesting delayed TrkA degradation. We also show that CMT2B Rab7 mutants markedly impaired NGF-induced Erk1/2 activation and differentiation in PC12M cells. Further analysis revealed that CMT2B Rab7 mutants caused axonal degeneration in rat E15.5 DRG neurons. We propose that Rab7 mutants induce premature degradation of retrograde NGF-TrkA trophic signaling, which may potentially contribute to the CMT2B disease.
C1 [Zhang, Kai; Osakada, Yasuko; Cui, Bianxiao] Stanford Univ, Dept Chem, Stanford, CA 94305 USA.
   [Ben Kenan, Rotem Fishel; Xu, Wei; Sinit, Rachel S.; Zhao, Xiaobei; Wu, Chengbiao] Univ Calif San Diego, Dept Neurosci, La Jolla, CA 92093 USA.
   [Xu, Wei] Shanghai Jiao Tong Univ, Dept Neurol, Rui Jin Hosp, Sch Med, Shanghai 200025, Peoples R China.
   [Xu, Wei] Shanghai Jiao Tong Univ, Inst Neurol, Rui Jin Hosp, Sch Med, Shanghai 200025, Peoples R China.
   [Chen, Liang] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
   [Chen, Jia-Yun] Stanford Univ, Dept Chem & Syst Biol, Stanford, CA 94305 USA.
RP Wu, CB (reprint author), Univ Calif San Diego, Dept Neurosci, George Palade Labs, Room 337 MC 0649,9500 Gilman Dr, La Jolla, CA 92093 USA.
EM bcui@stanford.edu; chw049@ucsd.edu
RI Zhang, Kai/G-6437-2010; Chen, Liang/F-3496-2011; Osakada,
   Yasuko/A-2342-2014
OI Zhang, Kai/0000-0002-6687-4558; Osakada, Yasuko/0000-0003-4078-0112
FU National Institutes of Health [ADRC P50, EY016525-08, NS082125]; Down
   Syndrome Research and Treatment Foundation; Larry L. Hillblom
   Foundation; University of California; San Diego Neurosciences Startup;
   K. C. Wong Education Foundation Hong Kong; Searle Scholar Award; Packard
   Science and Engineering Fellowship; American Cancer Society; Dreyfus New
   Faculty Award
FX This work was supported by National Institutes of Health Grants ADRC
   P50, EY016525-08, and NS082125, Down Syndrome Research and Treatment
   Foundation, Larry L. Hillblom Foundation, University of California, San
   Diego Neurosciences Startup, K. C. Wong Education Foundation Hong Kong
   (C. W.), the Searle Scholar Award, the Packard Science and Engineering
   Fellowship, a Postdoctoral Fellowship from the American Cancer Society
   (K.Z.), and the Dreyfus New Faculty Award (B. C.). We thank Sadie
   Bartholomew, Renae Shibata, Pauline Yue Hu, Josiah To, and Benz
   Chaijarasphong for technical assistance; Prof. Bao Lan of SIBCB for
   constructive suggestions; and Dr. H. Brown for constructing and
   providing the expression vector TrkA-mCherry.
NR 57
TC 31
Z9 31
U1 3
U2 7
PU SOC NEUROSCIENCE
PI WASHINGTON
PA 11 DUPONT CIRCLE, NW, STE 500, WASHINGTON, DC 20036 USA
SN 0270-6474
J9 J NEUROSCI
JI J. Neurosci.
PD APR 24
PY 2013
VL 33
IS 17
BP 7451
EP 7462
DI 10.1523/JNEUROSCI.4322-12.2013
PG 12
WC Neurosciences
SC Neurosciences & Neurology
GA 137EW
UT WOS:000318419300031
PM 23616551
ER

PT J
AU Stroppa, A
   Barone, P
   Jain, P
   Perez-Mato, JM
   Picozzi, S
AF Stroppa, A.
   Barone, P.
   Jain, P.
   Perez-Mato, J. M.
   Picozzi, S.
TI Hybrid Improper Ferroelectricity in a Multiferroic and Magnetoelectric
   Metal-Organic Framework
SO ADVANCED MATERIALS
LA English
DT Article
DE metal-organic frameworks; hybrid improper ferroelectrics; multiferroics;
   magnetoelectrics; jahn-teller; pseudo-rotation
ID ANISOTROPIC SUPEREXCHANGE INTERACTION; WEAK FERROMAGNETISM;
   MULTIFUNCTIONAL MATERIALS; COORDINATION POLYMERS; MAGNETIC-PROPERTIES;
   FORMATE FRAMEWORKS; PHASE-TRANSITIONS; PEROVSKITE; POLARIZATION; CRYSTAL
AB On the basis of first-principles calculations, we design a novel Cr-based metal-organic framework to be both multiferroic and magnetoelectric. The compound shows a "double-hybrid" nature: it is a hybrid organic-inorganic compound and it shows hybrid improper ferroelectricity. Here, the coupling of non-polar distortions, such as Jahn-Teller pseudo-rotations and tilting, pave the way to a polar behavior, with the coupling being realized through hydrogen bonds.
C1 [Stroppa, A.; Barone, P.; Picozzi, S.] UOS, CNR SPIN, Laquila, Italy.
   [Jain, P.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
   [Perez-Mato, J. M.] Univ Basque Country, Fac Ciencia & Tecnol, Dept Fis Mat Condensada, Bilbao, Spain.
RP Stroppa, A (reprint author), UOS, CNR SPIN, Laquila, Italy.
EM alessandro.stroppa@spin.cnr.it
RI SPIN-CNR, L'Aquila/C-7274-2011; Barone, Paolo/C-8918-2011; Jain,
   Prashant/C-8135-2009; Stroppa, Alessandro/E-7702-2010; Picozzi,
   Silvia/E-2374-2011; Perez-Mato, J. Manuel/G-8669-2015
OI Barone, Paolo/0000-0001-7222-8627; Stroppa,
   Alessandro/0000-0003-1000-4745; Picozzi, Silvia/0000-0002-3232-788X;
   Perez-Mato, J. Manuel/0000-0001-5047-0578
FU European Community [203523-BISMUTH]; Italian Ministry of University
   Research through the FIRB project [RBAP117RWN]; SPIN-CNR SEED project
   [PAQSE001]; CINECA award under the ISCRA initiative; U.S. Department of
   Energy through the LANL/LDRD Program;  [264098MAMA]
FX This work has been supported by the European Community's Seventh
   Framework Programme FP7/2007-2013 under grant agreement No.
   203523-BISMUTH and by the Italian Ministry of University Research
   through the FIRB project Cod. RBAP117RWN. We acknowledge support from
   FP7/2007-2013 under the Grant No. 264098MAMA. We acknowledge support
   from SPIN-CNR SEED project PAQSE001 "Metal-organic frameworks, new
   routes to multiferroicity and magnetoelectricity". A. S. wishes to thank
   Prof. I. B. Bersuker for useful insights about JT effect. A. S.
   acknowledges discussions with Dr. C. Autieri and Prof. E. Pavarini. We
   acknowledge that the results in this paper have been achieved using the
   PRACE Research Infrastructure resource FERMI based in Italy at
   CINECA-Bologna under grant agreement "MEMOIR-Multiferroic and
   magnetoElectric Metal OrganIc framewoRks" of the 5th PRACE Regular Call
   for Proposals.; We also acknowledge the CINECA award under the ISCRA
   initiative, for the availability of high performance computing resources
   and support. We gratefully acknowledge the very valuable help of Dr. E.
   Tasci when using the tools of the Bilbao Crystallographic Server for the
   mode analysis and its visualization. A. S. wishes to thank Prof. C.
   Draxl for the kind ospitality at Humboldt University in Berlin where
   part of this work was done. P. J. gratefully acknowledge the support of
   the U.S. Department of Energy through the LANL/LDRD Program.
NR 65
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U2 430
PU WILEY-V C H VERLAG GMBH
PI WEINHEIM
PA BOSCHSTRASSE 12, D-69469 WEINHEIM, GERMANY
SN 0935-9648
J9 ADV MATER
JI Adv. Mater.
PD APR 24
PY 2013
VL 25
IS 16
BP 2284
EP 2290
DI 10.1002/adma.201204738
PG 7
WC Chemistry, Multidisciplinary; Chemistry, Physical; Nanoscience &
   Nanotechnology; Materials Science, Multidisciplinary; Physics, Applied;
   Physics, Condensed Matter
SC Chemistry; Science & Technology - Other Topics; Materials Science;
   Physics
GA 132AR
UT WOS:000318040600006
PM 23386395
ER

PT J
AU Hong, S
   Choi, T
   Jeon, JH
   Kim, Y
   Lee, H
   Joo, HY
   Hwang, I
   Kim, JS
   Kang, SO
   Kalinin, SV
   Park, BH
AF Hong, Sahwan
   Choi, Taekjib
   Jeon, Ji Hoon
   Kim, Yunseok
   Lee, Hosang
   Joo, Ho-Young
   Hwang, Inrok
   Kim, Jin-Soo
   Kang, Sung-Oong
   Kalinin, Sergei V.
   Park, Bae Ho
TI Large Resistive Switching in Ferroelectric BiFeO3 Nano-Island Based
   Switchable Diodes
SO ADVANCED MATERIALS
LA English
DT Article
DE non-volatile memory; nano-islands; ferroelectric polarization; resistive
   switching; switchable diode
ID TUNNEL-JUNCTIONS; DOMAIN-WALLS; POLARIZATION; MEMORIES;
   ELECTRORESISTANCE; ARRAYS; STATES
AB Comparison between piezoelectric force microscopy images and current-voltage data consecutively obtained using conductive atomic force microscopy below transition voltages for a highly oriented ferroelectric BiFeO3 nano-island confirms that ferroelectric polarization reversal induces transitions of forward-direction, and thus down- and up-polarization is accompanied by positive-and negative-forward diode-like behavior, respectively.
C1 [Hong, Sahwan; Jeon, Ji Hoon; Hwang, Inrok; Kim, Jin-Soo; Park, Bae Ho] Konkuk Univ, Dept Phys, Div Quantum Phases & Devices, Seoul 143701, South Korea.
   [Choi, Taekjib; Lee, Hosang; Joo, Ho-Young] Sejong Univ, Dept Nanotechnol & Adv Mat Engn, HMC, Seoul 143747, South Korea.
   [Kim, Yunseok] Sungkyunkwan Univ, Sch Adv Mat Sci & Engn, Suwon 440746, South Korea.
   [Kim, Yunseok; Kalinin, Sergei V.] Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Oak Ridge, TN 37831 USA.
   [Kang, Sung-Oong] Gwangju Inst Sci & Technol, Res Inst Solar & Sustainable Energies, Kwangju 500712, South Korea.
RP Park, BH (reprint author), Konkuk Univ, Dept Phys, Div Quantum Phases & Devices, Seoul 143701, South Korea.
EM baehpark@gmail.com
RI Park, Bae Ho/D-4840-2011; Choi, Taekjib/H-8791-2012; Kalinin,
   Sergei/I-9096-2012
OI Choi, Taekjib/0000-0001-6912-3322; Kalinin, Sergei/0000-0001-5354-6152
FU National Research Laboratory (NRL) Program [2008-0060004]; World Class
   University (WCU) Program [R31-2008-000-10057-0]; Basic Science Research
   Program [2011-0025607, 2012-0001369]; NanoxMaterial Technology
   Development Program [2011-0030228]; Center for Advanced Soft Electronics
   under the Global Frontier Research Program [2011-0031640]; Quantum
   Metamaterials Research Center through the NRF [R11-2008-053-03002-0];
   Korea government Ministry of Education, Science and Technology (MEST);
   U.S. Department of Energy, Basic Energy Sciences, Materials Sciences and
   Engineering Division; Oak Ridge National Laboratory by the Scientific
   User Facilities Division, Office of Basic Energy Sciences, U.S.
   Department of Energy
FX This work was supported by the National Research Laboratory (NRL)
   Program (Grant No. 2008-0060004), the World Class University (WCU)
   Program (Grant No. R31-2008-000-10057-0), the Basic Science Research
   Program (2011-0025607 and 2012-0001369), the NanoxMaterial Technology
   Development Program (2011-0030228), a grant (Code No. 2011-0031640) from
   the Center for Advanced Soft Electronics under the Global Frontier
   Research Program, and the Quantum Metamaterials Research Center (Grant
   No. R11-2008-053-03002-0) through the NRF funded by the Korea government
   Ministry of Education, Science and Technology (MEST). S. V. K. and Y. K.
   were supported by the U.S. Department of Energy, Basic Energy Sciences,
   Materials Sciences and Engineering Division. A portion of this research
   was conducted at the Center for Nanophase Materials Sciences (S. V. K.),
   which was sponsored at Oak Ridge National Laboratory by the Scientific
   User Facilities Division, Office of Basic Energy Sciences, U.S.
   Department of Energy.
NR 26
TC 90
Z9 90
U1 16
U2 292
PU WILEY-V C H VERLAG GMBH
PI WEINHEIM
PA BOSCHSTRASSE 12, D-69469 WEINHEIM, GERMANY
SN 0935-9648
J9 ADV MATER
JI Adv. Mater.
PD APR 24
PY 2013
VL 25
IS 16
BP 2339
EP 2343
DI 10.1002/adma.201204839
PG 5
WC Chemistry, Multidisciplinary; Chemistry, Physical; Nanoscience &
   Nanotechnology; Materials Science, Multidisciplinary; Physics, Applied;
   Physics, Condensed Matter
SC Chemistry; Science & Technology - Other Topics; Materials Science;
   Physics
GA 132AR
UT WOS:000318040600015
PM 23447446
ER

PT J
AU Stewart, MP
   Ho, MH
   Wiese, S
   Lindstrom, ML
   Thogerson, CE
   Raugei, S
   Bullock, RM
   Helm, ML
AF Stewart, Michael P.
   Ho, Ming-Hsun
   Wiese, Stefan
   Lindstrom, Mary Lou
   Thogerson, Colleen E.
   Raugei, Simone
   Bullock, R. Morris
   Helm, Monte L.
TI High Catalytic Rates for Hydrogen Production Using Nickel
   Electrocatalysts with Seven-Membered Cyclic Diphosphine Ligands
   Containing One Pendant Amine
SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Article
ID 2ND COORDINATION SPHERE; HYDRIDE DONOR ABILITIES; IRON-ONLY HYDROGENASE;
   H-2 PRODUCTION; LOW OVERPOTENTIALS; FUNCTIONAL MODELS; ACTIVE-SITE;
   MOLECULAR CATALYSTS; STRUCTURE/FUNCTION RELATIONSHIPS; ELECTROCHEMICAL
   PARAMETRIZATION
AB A series of Ni-based electrocatalysts, [Ni(7P(2)(Ph)N(C6H4X))(2)](BF4)(2), featuring seven-membered cyclic diphosphine ligands incorporating a single amine base, 1-para-X-phenyl-3,6-triphenyl-1-aza-3,6-diphosphacycloheptane (7P(2)(Ph)N(C6H4X), where X = OMe, Me, Br, Cl, or CF3), have been synthesized and characterized. X-ray diffraction studies have established that the [Ni(7P(2)(Ph)N(C6H4X))(2)](2+) complexes have a square planar geometry, with bonds to four phosphorus atoms of the two bidentate diphosphine ligands. Each of the complexes is an efficient electrocatalyst for hydrogen production at the potential of the Ni(II/I) couple, with turnover frequencies ranging from 2400 to 27 000 s(-1) with [(DMF)H](+) in acetonitrile. Addition of water (up to 1.0 M) accelerates the catalysis, giving turnover frequencies ranging from 4100 to 96 000 s(-1). Computational studies carried out on the [Ni(7P(2)(Ph)N(C6H4X))(2)](2+) family indicate the catalytic rates reach a maximum when the electron-donating character of X results in the pK(a) of the Ni(I) protonated pendant amine matching that of the acid used for proton delivery. Additionally, the fast catalytic rates for hydrogen production by the [Ni(7P(2)(Ph)NC(6H4X))(2)](2+) family relative to the analogous [Ni((P2N2C6H4X)-N-Ph)(2)](2+) family are attributed to preferred formation of endo protonated isomers with respect to the metal center in the former, which is essential to attain suitable proximity to the reduced metal center to generate H-2. The results of this work highlight the importance of precise pK(a) matching with the acid for proton delivery to obtain optimal rates of catalysis.
C1 [Stewart, Michael P.; Ho, Ming-Hsun; Wiese, Stefan; Lindstrom, Mary Lou; Thogerson, Colleen E.; Raugei, Simone; Bullock, R. Morris; Helm, Monte L.] Pacific NW Natl Lab, Ctr Mol Electrocatalysis, Div Phys Sci, Richland, WA 99352 USA.
RP Helm, ML (reprint author), Pacific NW Natl Lab, Ctr Mol Electrocatalysis, Div Phys Sci, POB 999,K2-57, Richland, WA 99352 USA.
EM monte.helm@pnnl.gov
RI Bullock, R. Morris/L-6802-2016; 
OI Bullock, R. Morris/0000-0001-6306-4851; Helm, Monte/0000-0003-4728-8833
FU Center for Molecular Electrocatalysis, an Energy Frontier Research
   Center; U.S. Department of Energy, Office of Science, Office of Basic
   Energy Sciences; U.S. Department of Energy; Department of Energy's
   Office of Biological and Environmental Research located at Pacific
   Northwest National Laboratory; National Energy Research Scientific
   Computing Center (NERSC) at Lawrence Berkeley National Laboratory
FX We thank Dr. Daniel L. DuBois, Dr. Aaron M. Appel, and Dr. Shentan Chen
   for helpful discussions. This research was supported as part of the
   Center for Molecular Electrocatalysis, an Energy Frontier Research
   Center funded by the U.S. Department of Energy, Office of Science,
   Office of Basic Energy Sciences. Additional funding (Mary Lou Lindstrom
   and Colleen Thogerson) was provided by the U.S. Department of Energy
   Faculty and Student Team program. Computational resources were provided
   at W. R. Wiley Environmental Molecular Science Laboratory (EMSL), a
   national scientific user facility sponsored by the Department of
   Energy's Office of Biological and Environmental Research located at
   Pacific Northwest National Laboratory, and the National Energy Research
   Scientific Computing Center (NERSC) at Lawrence Berkeley National
   Laboratory. Pacific Northwest National Laboratory is operated by
   Battelle for the U.S. Department of Energy. We thank Dr. Jonathan Darmon
   for providing the cover artwork.
NR 81
TC 63
Z9 63
U1 4
U2 111
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0002-7863
J9 J AM CHEM SOC
JI J. Am. Chem. Soc.
PD APR 24
PY 2013
VL 135
IS 16
BP 6033
EP 6046
DI 10.1021/ja400181a
PG 14
WC Chemistry, Multidisciplinary
SC Chemistry
GA 134IY
UT WOS:000318204800026
PM 23384205
ER

PT J
AU Younker, JM
   Saito, T
   Hunt, MA
   Naskar, AK
   Beste, A
AF Younker, Jarod M.
   Saito, Tomonori
   Hunt, Marcus A.
   Naskar, Amit K.
   Beste, Ariana
TI Pyrolysis Pathways of Sulfonated Polyethylene, an Alternative Carbon
   Fiber Precursor
SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Article
ID LOW-DENSITY POLYETHYLENE; SULFUROUS ACID H2SO3; NONCOVALENT
   INTERACTIONS; THERMOCHEMICAL KINETICS; ALKYL SULFOXIDES; M06 SUITE;
   GAS-PHASE; FUNCTIONALS; TEMPERATURE; PRESSURE
AB Polyethylene is an emerging precursor material for the production of carbon fibers. Its sulfonated derivative yields ordered carbon when pyrolyzed under inert atmosphere. Here, we investigate its pyrolysis pathways by selecting n-heptane-4-sulfonic acid (H4S) as a model compound. Density functional theory and transition state theory were used to determine the rate constants of pyrolysis for H4S from 300 to 1000 K. Multiple reaction channels from two different mechanisms were explored: (1) internal five-centered elimination (E(i)5) and (2) radical chain reaction. The pyrolysis of H4S was simulated with kinetic Monte Carlo (kMC) to obtain thermogravimetric (TGA) plots that compared favorably to experiment. We observed that at temperatures <550 K, the radical mechanism was dominant and yielded the trans-alkene, whereas cis-alkene was formed at higher temperatures from the internal elimination. The maximum rates of % mass loss became independent of initial (O) over dotH radical concentration at 440-480 K. Experimentally, the maximum % mass loss occurred from 440 to 460 K (heating rate dependent). Activation energies derived from the kMC-simulated TGAs of H4S (26-29 kcal/mol) agreed with experiment for sulfonated polyethylene (similar to 31 kcal/mol). The simulations revealed that in this region, decomposition of radical HOS(O) over dot(2) became competitive to alpha-H abstraction by HOS(O) over dot(2), making (O) over dotH the carrying radical for the reaction chain. The maximum rate of % mass loss for internal elimination was observed at temperatures >600 K. Low-scale carbonization utilizes temperatures <620 K-i thus, internal elimination will not be competitive. E(i)5 elimination has been studied for sulfoxides and sulfones, but this represents the first study of internal elimination in sulfonic acids.
C1 [Younker, Jarod M.] Oak Ridge Associated Univ, Oak Ridge, TN 37831 USA.
   [Saito, Tomonori; Hunt, Marcus A.; Naskar, Amit K.] Oak Ridge Natl Lab, Mat Sci & Technol Div, Oak Ridge, TN 37831 USA.
   [Beste, Ariana] Univ Tennessee, Joint Inst Computat Sci, Oak Ridge, TN 37831 USA.
RP Younker, JM (reprint author), Oak Ridge Associated Univ, 1 Bethel Valley Rd, Oak Ridge, TN 37831 USA.
EM younkerjm@ornl.gov
RI Saito, Tomonori/M-1735-2016; 
OI Saito, Tomonori/0000-0002-4536-7530; Beste, Ariana/0000-0001-9132-792X
FU Office of Advanced Scientific Computing Research, U.S. Department of
   Energy; National Center for Computational Sciences at Oak Ridge National
   Laboratory [DE-AC05-00OR22725]
FX We would like to acknowledge Mary Potsma and A. C. Buchanan, III at ORNL
   for their help and expertise. We would also like to acknowledge Joshua
   H. Perkins and Tyler A. Tommey at ORNL for their support. This work was
   sponsored by the Office of Advanced Scientific Computing Research, U.S.
   Department of Energy, and was performed in part using the resources of
   the National Center for Computational Sciences at Oak Ridge National
   Laboratory under contract DE-AC05-00OR22725 and the National Institute
   for Computational Sciences provided by the National Science Foundation.
NR 56
TC 9
Z9 11
U1 4
U2 91
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0002-7863
J9 J AM CHEM SOC
JI J. Am. Chem. Soc.
PD APR 24
PY 2013
VL 135
IS 16
BP 6130
EP 6141
DI 10.1021/ja3121845
PG 12
WC Chemistry, Multidisciplinary
SC Chemistry
GA 134IY
UT WOS:000318204800037
PM 23560686
ER

PT J
AU Galley, CR
   Behunin, RO
   Hu, BL
AF Galley, Chad R.
   Behunin, Ryan O.
   Hu, B. L.
TI Oscillator-field model of moving mirrors in quantum optomechanics
SO PHYSICAL REVIEW A
LA English
DT Article
ID RESOLVED-SIDE-BAND; ELECTROMAGNETIC-FIELD; MICROMECHANICAL OSCILLATOR;
   RADIATION-PRESSURE; PARTICLE CREATION; DIMENSIONAL SPACE; DISPERSIVE
   MIRROR; STATE REDUCTION; MASTER EQUATION; BROWNIAN-MOTION
AB We present a microphysics model for the kinematics and dynamics of optomechanics describing the coupling between an optical field, modeled here by a massless scalar field, and the internal and mechanical degrees of freedom of a movable mirror. Instead of implementing boundary conditions on the field, we introduce an internal degree of freedom and its dynamics to describe the mirror's reflectivity. Depending on parameter values, the internal degrees of freedom of the mirror in this model capture a range of its optical activities, from those exhibiting broadband reflective properties to those reflecting only in a narrow band. After establishing the model we show how appropriate parameter choices lead to other well-known optomechanical models, including those of Barton and Calogeracos [Ann. Phys. (NY) 238, 227 (1995)], Calogeracos and Barton, Ann. Phys. (NY) 238, 268 (1995), Law [Phys. Rev. A 51, 2537 (1995)], and Golestanian and Kardar [Phys. Rev. Lett. 78, 3421 (1997); Phys. Rev. A 58, 1713 (1998)]. As a simple illustrative application we derive classical radiation pressure cooling from this model. We then connect our microphysics model to the common descriptions of a moving mirror coupled to radiation pressure (e. g., with Nx coupling, where N is the photon number and x is the mirror displacement), making explicit the underlying assumptions made in these phenomenological models. Our model is also applicable to the lesser explored case of small N, which existing models based on sideband approximations [Kimble et al., Phys. Rev. D 65, 022002 (2001)] have not addressed. Interestingly, we also find that slow-moving mirrors in our model can be described by the ubiquitous Brownian motion model of quantum open systems. The scope of applications of this model ranges from a full quantum-mechanical treatment of radiation pressure cooling and quantum entanglement between macroscopic mirrors to the back reaction of Hawking radiation on black-hole evaporation in a moving mirror analog. DOI: 10.1103/PhysRevA.87.043832
C1 [Galley, Chad R.] CALTECH, Jet Prop Lab, Pasadena, CA 91125 USA.
   [Galley, Chad R.] CALTECH, Pasadena, CA 91106 USA.
   [Behunin, Ryan O.] Los Alamos Natl Lab, Ctr Nonlinear Studies, Los Alamos, NM 87545 USA.
   [Behunin, Ryan O.] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA.
   [Hu, B. L.] Univ Maryland, Joint Quantum Inst, College Pk, MD 20742 USA.
   [Hu, B. L.] Univ Maryland, Maryland Ctr Fundamental Phys, College Pk, MD 20742 USA.
   [Hu, B. L.] Hong Kong Univ Sci & Technol, Inst Adv Study, Kowloon, Hong Kong, Peoples R China.
   [Hu, B. L.] Hong Kong Univ Sci & Technol, Dept Phys, Kowloon, Hong Kong, Peoples R China.
RP Galley, CR (reprint author), CALTECH, Jet Prop Lab, 4800 Oak Grove Dr, Pasadena, CA 91125 USA.
FU NASA; NIST Gaithersburg grant; US Department of Energy through the LANL
   LDRD program; NSF [PHY-0801368]
FX C.G. was supported in part by an appointment to the NASA Postdoctoral
   Program at the Jet Propulsion Laboratory administered by Oak Ridge
   Associated Universities through a contract with NASA and in part by a
   NIST Gaithersburg grant awarded to the University of Maryland when this
   work was started. R. B. gratefully acknowledges the support of the US
   Department of Energy through the LANL LDRD program. B. L. H. wishes to
   thank Prof. Jason Twamley, director of the Centre for Quantum Computer
   Technology at Macquarie University, for his warm hospitality in
   February-March 2011 during which this work was partly carried out. His
   research was partially supported by NSF Grant No. PHY-0801368 to the
   University of Maryland.
NR 101
TC 3
Z9 3
U1 2
U2 16
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1050-2947
J9 PHYS REV A
JI Phys. Rev. A
PD APR 24
PY 2013
VL 87
IS 4
AR 043832
DI 10.1103/PhysRevA.87.043832
PG 21
WC Optics; Physics, Atomic, Molecular & Chemical
SC Optics; Physics
GA 131AV
UT WOS:000317963700006
ER

PT J
AU Ayangeakaa, AD
   Garg, U
   Anthony, MD
   Frauendorf, S
   Matta, JT
   Nayak, BK
   Patel, D
   Chen, QB
   Zhang, SQ
   Zhao, PW
   Qi, B
   Meng, J
   Janssens, RVF
   Carpenter, MP
   Chiara, CJ
   Kondev, FG
   Lauritsen, T
   Seweryniak, D
   Zhu, S
   Ghugre, SS
   Palit, R
AF Ayangeakaa, A. D.
   Garg, U.
   Anthony, M. D.
   Frauendorf, S.
   Matta, J. T.
   Nayak, B. K.
   Patel, D.
   Chen, Q. B.
   Zhang, S. Q.
   Zhao, P. W.
   Qi, B.
   Meng, J.
   Janssens, R. V. F.
   Carpenter, M. P.
   Chiara, C. J.
   Kondev, F. G.
   Lauritsen, T.
   Seweryniak, D.
   Zhu, S.
   Ghugre, S. S.
   Palit, R.
TI Evidence for Multiple Chiral Doublet Bands in Ce-133
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID A NUCLEUS ND-135; ROTATIONAL BANDS; ODD; SPECTROSCOPY
AB Two distinct sets of chiral-partner bands have been identified in the nucleus Ce-133. They constitute a multiple chiral doublet, a phenomenon predicted by relativistic mean field (RMF) calculations and observed experimentally here for the first time. The properties of these chiral bands are in good agreement with results of calculations based on a combination of the constrained triaxial RMF theory and the particle-rotor model. DOI: 10.1103/PhysRevLett.110.172504
C1 [Ayangeakaa, A. D.; Garg, U.; Anthony, M. D.; Frauendorf, S.; Matta, J. T.; Nayak, B. K.; Patel, D.] Univ Notre Dame, Dept Phys, Notre Dame, IN 46556 USA.
   [Chen, Q. B.; Zhang, S. Q.; Zhao, P. W.; Meng, J.] Peking Univ, Sch Phys, State Key Lab Nucl Phys & Technol, Beijing 100871, Peoples R China.
   [Qi, B.] Shandong Univ, Sch Space Sci & Phys, Weihai 264209, Peoples R China.
   [Meng, J.] Beihang Univ, Sch Phys & Nucl Energy Engn, Beijing 100191, Peoples R China.
   [Meng, J.] Univ Stellenbosch, Dept Phys, ZA-7602 Stellenbosch, South Africa.
   [Janssens, R. V. F.; Carpenter, M. P.; Chiara, C. J.; Lauritsen, T.; Seweryniak, D.; Zhu, S.] Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA.
   [Chiara, C. J.] Univ Maryland, Dept Chem & Biochem, College Pk, MD 20742 USA.
   [Kondev, F. G.] Argonne Natl Lab, Nucl Engn Div, Argonne, IL 60439 USA.
   [Ghugre, S. S.] UGC DAE Consortium Sci Res, Kolkata 700098, India.
   [Palit, R.] Tata Inst Fundamental Res, Bombay 400005, Maharashtra, India.
   [Palit, R.] Univ Notre Dame, Joint Inst Nucl Astrophys, Notre Dame, IN 46556 USA.
RP Ayangeakaa, AD (reprint author), Univ Notre Dame, Dept Phys, Notre Dame, IN 46556 USA.
RI Chen, Qibo/C-2054-2013; Zhao, Pengwei/F-9107-2010; Meng,
   Jie/B-8548-2009; Zhang, ShuangQuan/B-3838-2012; Palit,
   Rudrajyoti/F-5185-2012; Carpenter, Michael/E-4287-2015; Ayangeakaa,
   Akaa/F-3683-2015
OI Chen, Qibo/0000-0001-5159-4468; Zhao, Pengwei/0000-0001-8243-2381; Meng,
   Jie/0000-0002-0977-5318; Zhang, ShuangQuan/0000-0002-9590-1818;
   Carpenter, Michael/0000-0002-3237-5734; Ayangeakaa,
   Akaa/0000-0003-1679-3175
FU Peking University Global Visiting Professors Program at Peking
   University; U. S. National Science Foundation [PHY07-58100, PHY-0822648,
   PHY-1068192]; U. S. Department of Energy, Office of Nuclear Physics
   [DE-FG02-95ER40939, DE-FG02-94ER40834, DE-AC02-06CH11357]; Major State
   973 Program of China [2013CB834400]; National Natural Science Foundation
   of China [10975007, 10975008, 11105005, 11175002]; Research Fund for the
   Doctoral Program of Higher Education, China [20110001110087]; China
   Postdoctoral Science Foundation [2012M520101]
FX We thank C. R. Hoffman, C. Nair, and I. Stefanescu for their help with
   these measurements. U. G. acknowledges the Peking University Global
   Visiting Professors Program for support during his sojourn at Peking
   University. This work has been supported in part by the U. S. National
   Science Foundation (Grants No. PHY07-58100, No. PHY-0822648, and No.
   PHY-1068192); the U. S. Department of Energy, Office of Nuclear Physics,
   under Grants No. DE-FG02-95ER40939 (UND) and No. DE-FG02-94ER40834 (UM),
   and Contract No. DE-AC02-06CH11357 (ANL); the Major State 973 Program of
   China (Grant No. 2013CB834400); the National Natural Science Foundation
   of China (Grants No. 10975007, No. 10975008, No. 11105005, and No.
   11175002); the Research Fund for the Doctoral Program of Higher
   Education, China (Grant No. 20110001110087); and the China Postdoctoral
   Science Foundation (Grant No. 2012M520101).
NR 44
TC 27
Z9 30
U1 1
U2 13
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
EI 1079-7114
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD APR 24
PY 2013
VL 110
IS 17
AR 172504
DI 10.1103/PhysRevLett.110.172504
PG 5
WC Physics, Multidisciplinary
SC Physics
GA 131CA
UT WOS:000317967700003
PM 23679714
ER

PT J
AU Chen, G
   Zhu, J
   Quesada, A
   Li, J
   N'Diaye, AT
   Huo, Y
   Ma, TP
   Chen, Y
   Kwon, HY
   Won, C
   Qiu, ZQ
   Schmid, AK
   Wu, YZ
AF Chen, G.
   Zhu, J.
   Quesada, A.
   Li, J.
   N'Diaye, A. T.
   Huo, Y.
   Ma, T. P.
   Chen, Y.
   Kwon, H. Y.
   Won, C.
   Qiu, Z. Q.
   Schmid, A. K.
   Wu, Y. Z.
TI Novel Chiral Magnetic Domain Wall Structure in Fe/Ni/Cu(001) Films
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID SKYRMION LATTICE; ORDER
AB Using spin-polarized low energy electron microscopy, we discovered a new type of domain wall structure in perpendicularly magnetized Fe/Ni bilayers grown epitaxially on Cu(100). Specifically, we observed unexpected Neel-type walls with fixed chirality in the magnetic stripe phase. Furthermore, we find that the chirality of the domain walls is determined by the film growth order with the chirality being right handed in Fe/Ni bilayers and left handed in Ni/Fe bilayers, suggesting that the underlying mechanism is the Dzyaloshinskii-Moriya interaction at the film interfaces. Our observations may open a new route to control chiral spin structures using interfacial engineering in transition metal heterostructures. DOI:10.1103/PhysRevLett.110.177204
C1 [Chen, G.; Zhu, J.; Li, J.; Huo, Y.; Ma, T. P.; Chen, Y.; Wu, Y. Z.] Fudan Univ, Ctr Spintron Devices & Applicat, State Key Lab Surface Phys, Dept Phys, Shanghai 200433, Peoples R China.
   [Chen, G.; Zhu, J.; Li, J.; Huo, Y.; Ma, T. P.; Chen, Y.; Wu, Y. Z.] Fudan Univ, Ctr Spintron Devices & Applicat, Adv Mat Lab, Shanghai 200433, Peoples R China.
   [Chen, G.; Quesada, A.; N'Diaye, A. T.; Schmid, A. K.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, NCEM, Berkeley, CA 94720 USA.
   [Kwon, H. Y.; Won, C.] Kyung Hee Univ, Dept Phys, Seoul 130701, South Korea.
   [Qiu, Z. Q.] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
RP Schmid, AK (reprint author), Univ Calif Berkeley, Lawrence Berkeley Natl Lab, NCEM, Berkeley, CA 94720 USA.
EM akschmid@lbl.gov; wuyizheng@fudan.edu.cn
RI wu, YiZheng/O-1547-2013; Quesada, Adrian/L-6475-2014; Wu,
   yizheng/P-2395-2014; Chen, Gong/H-3074-2015; Chen, Yan/B-2158-2012;
   Foundry, Molecular/G-9968-2014; Qiu, Zi Qiang/O-4421-2016
OI Quesada, Adrian/0000-0002-6994-0514; Wu, yizheng/0000-0002-9289-1271;
   Chen, Yan/0000-0002-1906-1802; Qiu, Zi Qiang/0000-0003-0680-0714
FU MOST [2011CB921801, 2009CB929203, 2010DFA52220]; NSFC of China
   [10834001, 10925416, 11274074]; WHMFC [WHMFCKF2011008]; National
   Research Foundation of Korea; Korean Government [2009-0074324]; National
   Science Foundation [DMR-1210167]; NRF through the Global Research
   Laboratory project of Korea; Office of Science, Office of Basic Energy
   Sciences, Scientific User Facilities Division, of the U.S. Department of
   Energy [DE-AC02-05CH11231]
FX We acknowledge helpful discussions with Professor X.F. Jin. This work
   was supported by MOST Grants No. 2011CB921801, No. 2009CB929203, and No.
   2010DFA52220, by NSFC Grants No. 10834001, No. 10925416, and No.
   11274074 of China, by WHMFC Grant No. WHMFCKF2011008, by a Grant from
   the National Research Foundation of Korea, funded by the Korean
   Government (2009-0074324), by the National Science Foundation under
   Grant No. DMR-1210167, and by NRF through the Global Research Laboratory
   project of Korea. Experiments were performed at the National Center for
   Electron Microscopy, Lawrence Berkeley National Laboratory, supported by
   the Office of Science, Office of Basic Energy Sciences, Scientific User
   Facilities Division, of the U.S. Department of Energy under Contract No.
   DE-AC02-05CH11231.
NR 22
TC 89
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U2 166
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD APR 24
PY 2013
VL 110
IS 17
AR 177204
DI 10.1103/PhysRevLett.110.177204
PG 5
WC Physics, Multidisciplinary
SC Physics
GA 131CA
UT WOS:000317967700012
PM 23679766
ER

PT J
AU Kim, MG
   Tucker, GS
   Pratt, DK
   Ran, S
   Thaler, A
   Christianson, AD
   Marty, K
   Calder, S
   Podlesnyak, A
   Bud'ko, SL
   Canfield, PC
   Kreyssig, A
   Goldman, AI
   McQueeney, RJ
AF Kim, M. G.
   Tucker, G. S.
   Pratt, D. K.
   Ran, S.
   Thaler, A.
   Christianson, A. D.
   Marty, K.
   Calder, S.
   Podlesnyak, A.
   Bud'ko, S. L.
   Canfield, P. C.
   Kreyssig, A.
   Goldman, A. I.
   McQueeney, R. J.
TI Magnonlike Dispersion of Spin Resonance in Ni-doped BaFe2As2
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID SUPERCONDUCTORS
AB Inelastic neutron scattering measurements on Ba(Fe0.963Ni0.037)(2)As-2 manifest a neutron spin resonance in the superconducting state with anisotropic dispersion within the Fe layer. Whereas the resonance is sharply peaked at the antiferromagnetic (AFM) wave vector Q(AFM) along the orthorhombic a axis, the resonance disperses upwards away from Q(AFM) along the b axis. In contrast to the downward dispersing resonance and hourglass shape of the spin excitations in superconducting cuprates, the resonance in electron-doped BaFe2As2 compounds possesses a magnonlike upwards dispersion. DOI:10.1103/PhysRevLett.110.177002
C1 [Kim, M. G.; Tucker, G. S.; Pratt, D. K.; Ran, S.; Thaler, A.; Bud'ko, S. L.; Canfield, P. C.; Kreyssig, A.; Goldman, A. I.; McQueeney, R. J.] Iowa State Univ, Ames Lab, Ames, IA 50011 USA.
   [Kim, M. G.; Tucker, G. S.; Pratt, D. K.; Ran, S.; Thaler, A.; Bud'ko, S. L.; Canfield, P. C.; Kreyssig, A.; Goldman, A. I.; McQueeney, R. J.] Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA.
   [Christianson, A. D.; Marty, K.; Calder, S.; Podlesnyak, A.] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
RP McQueeney, RJ (reprint author), Iowa State Univ, Ames Lab, Ames, IA 50011 USA.
EM mgkim@lbl.gov; mcqueeney@ameslab.gov
RI Kim, Min Gyu/B-8637-2012; Instrument, CNCS/B-4599-2012; Tucker,
   Gregory/L-9357-2013; Canfield, Paul/H-2698-2014; Thaler,
   Alexander/J-5741-2014; McQueeney, Robert/A-2864-2016; christianson,
   andrew/A-3277-2016; Podlesnyak, Andrey/A-5593-2013; 
OI Kim, Min Gyu/0000-0001-7676-454X; Tucker, Gregory/0000-0002-2787-8054;
   Thaler, Alexander/0000-0001-5066-8904; McQueeney,
   Robert/0000-0003-0718-5602; christianson, andrew/0000-0003-3369-5884;
   Podlesnyak, Andrey/0000-0001-9366-6319; Calder,
   Stuart/0000-0001-8402-3741
FU U.S. Department of Energy, Office of Basic Energy Science, Division of
   Materials Sciences and Engineering [DE-AC02-07CH11358]; U.S. Department
   of Energy, Office of Basic Energy Sciences, Scientific User Facilities
   Division
FX The work at Ames Laboratory was supported by the U.S. Department of
   Energy, Office of Basic Energy Science, Division of Materials Sciences
   and Engineering under Contract No. DE-AC02-07CH11358. Work at Oak Ridge
   National Laboratory is supported by U.S. Department of Energy, Office of
   Basic Energy Sciences, Scientific User Facilities Division.
NR 25
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PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD APR 24
PY 2013
VL 110
IS 17
AR 177002
DI 10.1103/PhysRevLett.110.177002
PG 5
WC Physics, Multidisciplinary
SC Physics
GA 131CA
UT WOS:000317967700011
PM 23679760
ER

PT J
AU Zhu, LY
   Liu, YH
   Bergeret, FS
   Pearson, JE
   te Velthuis, SGE
   Bader, SD
   Jiang, JS
AF Zhu, L. Y.
   Liu, Yaohua
   Bergeret, F. S.
   Pearson, J. E.
   te Velthuis, S. G. E.
   Bader, S. D.
   Jiang, J. S.
TI Unanticipated Proximity Behavior in Ferromagnet-Superconductor
   Heterostructures with Controlled Magnetic Noncollinearity
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID FIELD
AB Magnetization noncollinearity in ferromagnet-superconductor (F/S) heterostructures is expected to enhance the superconducting transition temperature (T-c) according to the domain-wall superconductivity theory, or to suppress Tc when spin-triplet Cooper pairs are explicitly considered. We study the proximity effect in F/S structures where the F layer is a Sm-Co/Py exchange-spring bilayer and the S layer is Nb. The exchange-spring contains a single, controllable and quantifiable domain wall in the Py layer. We observe an enhancement of superconductivity that is nonmonotonic as the Py domain wall is increasingly twisted via rotating a magnetic field, different from theoretical predictions. We have excluded magnetic fields and vortex motion as the source of the nonmonotonic behavior. This unanticipated proximity behavior suggests that new physics is yet to be captured in the theoretical treatments of F/S systems containing noncollinear magnetization. DOI: 10.1103/PhysRevLett.110.177001
C1 [Zhu, L. Y.; Liu, Yaohua; Pearson, J. E.; te Velthuis, S. G. E.; Bader, S. D.; Jiang, J. S.] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA.
   [Bergeret, F. S.] Ctr Mixto CSIC UPV EHU, Ctr Fis Mat CFM MPC, E-20018 San Sebastian, Spain.
   [Bergeret, F. S.] DIPC, E-20018 San Sebastian, Spain.
   [Bergeret, F. S.] Carl von Ossietzky Univ Oldenburg, Inst Phys, D-26111 Oldenburg, Germany.
   [Bader, S. D.] Argonne Natl Lab, Ctr Nanoscale Mat, Argonne, IL 60439 USA.
   Carl von Ossietzky Univ Oldenburg, D-26111 Oldenburg, Germany.
RP Zhu, LY (reprint author), Argonne Natl Lab, Div Mat Sci, 9700 S Cass Ave, Argonne, IL 60439 USA.
EM jiang@anl.gov
RI te Velthuis, Suzanne/I-6735-2013; Liu, Yaohua/B-2529-2009; DONOSTIA
   INTERNATIONAL PHYSICS CTR., DIPC/C-3171-2014; CSIC-UPV/EHU,
   CFM/F-4867-2012
OI te Velthuis, Suzanne/0000-0002-1023-8384; Liu,
   Yaohua/0000-0002-5867-5065; 
FU U.S. Department of Energy, Office of Science, Office of Basic Energy
   Sciences [DE-AC02-06CH11357]; Spanish Ministry of Economy and
   Competitiveness [FIS2011-28851-C02-02]
FX Work at Argonne and use of the Center for Nanoscale Materials are
   supported by the U.S. Department of Energy, Office of Science, Office of
   Basic Energy Sciences, under Contract No. DE-AC02-06CH11357. The work of
   F.S.B. was supported by the Spanish Ministry of Economy and
   Competitiveness under Project No. FIS2011-28851-C02-02.
NR 27
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U2 44
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD APR 24
PY 2013
VL 110
IS 17
AR 177001
DI 10.1103/PhysRevLett.110.177001
PG 5
WC Physics, Multidisciplinary
SC Physics
GA 131CA
UT WOS:000317967700010
PM 23679759
ER

PT J
AU Hoffmeister, G
   Bellei, C
   Harres, K
   Ivanov, D
   Kraus, D
   Pelka, A
   Rethfeld, B
   Schaumann, G
   Roth, M
AF Hoffmeister, G.
   Bellei, C.
   Harres, K.
   Ivanov, D.
   Kraus, D.
   Pelka, A.
   Rethfeld, B.
   Schaumann, G.
   Roth, M.
TI Influence of fs-laser desorption on target normal sheath accelerated
   ions
SO PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS
LA English
DT Article
ID PROTON-BEAMS; ELECTRON
AB We report on the effects of fs-laser desorption on the ion acceleration induced by the target normal sheath acceleration (TNSA) mechanism. The experiment was performed at the Lawrence Livermore National Laboratory (LLNL) using the 100 TW Callisto laser of the Jupiter Laser Facility (JLF). Thin metal foils (Au, Cu, and Al) with thicknesses ranging from 10 to 20 mu m were irradiated by a variable number of low intensity (similar to 10(12) W/cm(2)) laser pulses, the last one arriving 100 ms before the main pulse. With these short pulses water vapor and hydrocarbon contaminations could stepwise be removed from the target surface. Substantial modifications of the TNSA-ion energy spectra were observed such as diminished proton energy and intensity, the absence of low-charged ion states, increased particle numbers for C4+ and O6+ ions in the higher energetic part of their particle spectra as well as the acceleration of target ions. The controlled application of fs-laser desorption on the laser-ion acceleration thus strongly influences the ion spectra and offers the possibility of selecting a targeted range of ion species for the acceleration to higher energies due to the systematic removal of contamination layers. DOI: 10.1103/PhysRevSTAB.16.041304
C1 [Hoffmeister, G.; Harres, K.; Kraus, D.; Pelka, A.; Schaumann, G.; Roth, M.] Tech Univ Darmstadt, Inst Kernphys, D-64289 Darmstadt, Germany.
   [Bellei, C.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
   [Ivanov, D.; Rethfeld, B.] Tech Univ Kaiserslautern, Fachbereich Phys, D-67663 Kaiserslautern, Germany.
   [Ivanov, D.; Rethfeld, B.] Tech Univ Kaiserslautern, Forschungszentrum OPTIMAS, D-67663 Kaiserslautern, Germany.
RP Hoffmeister, G (reprint author), Tech Univ Darmstadt, Inst Kernphys, Schlossgartenstr 9, D-64289 Darmstadt, Germany.
EM g.hoffmeister@gsi.de
FU Bundesministerium fur Bildung und Forschung (BMBF) [06 DA 9044 I]; DFG
   within Emmy Noether Project [RE 1141/11-1]; U.S. Department of Energy,
   Lawrence Livermore National Laboratory [DE-AC52-07NA27344]
FX The authors would like to thank the Callisto laser crew of the Jupiter
   Laser Facility at Lawrence Livermore National Laboratory, California,
   for their excellent support at any time during our experimental
   campaign. The experiment was funded by Bundesministerium fur Bildung und
   Forschung (BMBF), support code 06 DA 9044 I. We further thank the DFG
   for their contribution within the Emmy Noether Project No. RE 1141/11-1.
   The use of the Jupiter Laser Facility was supported by the U.S.
   Department of Energy, Lawrence Livermore National Laboratory, under
   Contract No. DE-AC52-07NA27344.
NR 28
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U1 2
U2 14
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-4402
J9 PHYS REV SPEC TOP-AC
JI Phys. Rev. Spec. Top.-Accel. Beams
PD APR 24
PY 2013
VL 16
IS 4
AR 041304
DI 10.1103/PhysRevSTAB.16.041304
PG 10
WC Physics, Nuclear; Physics, Particles & Fields
SC Physics
GA 131CC
UT WOS:000317967900002
ER

PT J
AU Rogers, CT
   Stratakis, D
   Prior, G
   Gilardoni, S
   Neuffer, D
   Snopok, P
   Alekou, A
   Pasternak, J
AF Rogers, C. T.
   Stratakis, D.
   Prior, G.
   Gilardoni, S.
   Neuffer, D.
   Snopok, P.
   Alekou, A.
   Pasternak, J.
TI Muon front end for the neutrino factory
SO PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS
LA English
DT Article
AB In the neutrino factory, muons are produced by firing high-energy protons onto a target to produce pions. The pions decay to muons and pass through a capture channel known as the muon front end, before acceleration to 12.6 GeV. The muon front end comprises a variable frequency rf system for longitudinal capture and an ionization cooling channel. In this paper we detail recent improvements in the design of the muon front end. DOI: 10.1103/PhysRevSTAB.16.040104
C1 [Rogers, C. T.; Pasternak, J.] STFC Rutherford Appleton Lab, Didcot OX11 0QX, Oxon, England.
   [Stratakis, D.] Brookhaven Natl Lab, Upton, NY 11973 USA.
   [Prior, G.; Gilardoni, S.] CERN, European Org Nucl Res, CH-1211 Geneva 23, Switzerland.
   [Neuffer, D.] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA.
   [Snopok, P.] IIT, Chicago, IL 60647 USA.
   [Alekou, A.; Pasternak, J.] Univ London Imperial Coll Sci Technol & Med, Blackett Lab, London SW7 2BW, England.
RP Rogers, CT (reprint author), STFC Rutherford Appleton Lab, Harwell Sci & Innovat Campus, Didcot OX11 0QX, Oxon, England.
EM chris.rogers@stfc.ac.uk
RI Prior, Gersende/I-8191-2013; 
OI Prior, Gersende/0000-0002-6058-1420
FU European Community under the European Commission [212372]
FX We acknowledge the financial support of the European Community under the
   European Commission Framework Programme 7 Design Study: EUROnu, Project
   No. 212372. We also thank colleagues from the International Design Study
   (IDS-NF) collaboration for fruitful discussions concerning this work.
NR 16
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U1 1
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PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-4402
J9 PHYS REV SPEC TOP-AC
JI Phys. Rev. Spec. Top.-Accel. Beams
PD APR 24
PY 2013
VL 16
IS 4
AR 040104
DI 10.1103/PhysRevSTAB.16.040104
PG 8
WC Physics, Nuclear; Physics, Particles & Fields
SC Physics
GA 131CC
UT WOS:000317967900001
ER

PT J
AU Kaur, A
   Ylvisaker, ER
   Lu, DY
   Pham, TA
   Galli, G
   Pickett, WE
AF Kaur, Amandeep
   Ylvisaker, Erik R.
   Lu, Deyu
   Tuan Anh Pham
   Galli, Giulia
   Pickett, Warren E.
TI Spectral representation analysis of dielectric screening in solids and
   molecules
SO PHYSICAL REVIEW B
LA English
DT Article
ID QUASI-PARTICLE ENERGIES; BAND-STRUCTURE; PHOTOELECTRON-SPECTROSCOPY;
   CORE POLARIZATION; OPTICAL-SPECTRUM; CLUSTER ANIONS; SEMICONDUCTORS;
   INSULATORS; IONS; PSEUDOPOTENTIALS
AB We propose a new approach to identifying and rationalizing the contribution of core electron polarization to dielectric screening, based on ab initio calculations of the dielectric matrix in its eigenpotential basis. We also present calculations of phonon frequencies, dielectric constants, and quasiparticle energies of several systems, and we discuss the quantitative effect of including core polarization. Our findings illustrate efficient ways of approximating the spectral decomposition of dielectric matrices used, e. g., in many-body perturbation theory and dielectric constant calculations, with substantial computational gains for large systems composed of heavy atoms. DOI: 10.1103/PhysRevB.87.155144
C1 [Kaur, Amandeep; Ylvisaker, Erik R.; Galli, Giulia; Pickett, Warren E.] Univ Calif Davis, Dept Phys, Davis, CA 95616 USA.
   [Lu, Deyu] Brookhaven Natl Lab, Ctr Funct Nanomat, Upton, NY 11973 USA.
   [Tuan Anh Pham; Galli, Giulia] Univ Calif Davis, Dept Chem, Davis, CA 95616 USA.
RP Kaur, A (reprint author), Univ Calif Davis, Dept Phys, Davis, CA 95616 USA.
EM ackaur@ucdavis.edu
RI Lu, Deyu/O-4418-2016
OI Lu, Deyu/0000-0003-4351-6085
FU DOE/SciDAC-e Grant [DE-FC02-06ER25777]; DOE/SciDac Grant
   [DE-FC02-06ER25794]; DOE/BES Grant [DE-FG02-06ER46262]; National Science
   Foundation [OCI-1053575]; US Department of Energy, Office of Basic
   Energy Sciences [DE-AC02-98CH10886D]; Guru Gobind Singh Fellowship;
   Simons Foundation
FX We thank Y. Ping, Y. Li, H.-V. Nguyen, and D. Rocca for useful
   discussions. This work was supported by DOE/SciDAC-e Grant No.
   DE-FC02-06ER25777, DOE/SciDac Grant No. DE-FC02-06ER25794, and DOE/BES
   Grant No. DE-FG02-06ER46262 (G. G. and T. A. P.). We used the Extreme
   Science and Engineering Discovery Environment (XSEDE), which is
   supported by National Science Foundation Grant No. OCI-1053575, and the
   NERSC facility at LBNL. Research was carried out in part at the Center
   for Functional Nanomaterials, Brookhaven National Laboratory, which is
   supported by the US Department of Energy, Office of Basic Energy
   Sciences, under Contract No. DE-AC02-98CH10886D. A. Kaur was supported
   by the Guru Gobind Singh Fellowship. W. E. P. acknowledges support from
   the Simons Foundation and the hospitality of the Graphene Research
   Center, National University of Singapore, during the latter stage of
   this work.
NR 47
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U1 1
U2 11
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD APR 24
PY 2013
VL 87
IS 15
AR 155144
DI 10.1103/PhysRevB.87.155144
PG 9
WC Physics, Condensed Matter
SC Physics
GA 131BK
UT WOS:000317965600002
ER

PT J
AU Lamsal, J
   Tucker, GS
   Heitmann, TW
   Kreyssig, A
   Jesche, A
   Pandey, A
   Tian, W
   McQueeney, RJ
   Johnston, DC
   Goldman, AI
AF Lamsal, J.
   Tucker, G. S.
   Heitmann, T. W.
   Kreyssig, A.
   Jesche, A.
   Pandey, Abhishek
   Tian, Wei
   McQueeney, R. J.
   Johnston, D. C.
   Goldman, A. I.
TI Persistence of local-moment antiferromagnetic order in Ba1-xKxMn2As2
SO PHYSICAL REVIEW B
LA English
DT Article
ID INSULATOR; METAL
AB BaMn2As2 is a local-moment antiferromagnetic insulator with a Neel temperature T-N of 625 K and a large ordered moment of 3.9 mu(B)/Mn. Remarkably, this compound can be driven metallic by the substitution of as little as 1.6% K for Ba while retaining essentially the same ordered magnetic moment and Neel temperature, as previously reported. Here, using both powder and single crystal neutron diffraction we show that the local moment antiferromagnetic order in Ba1-xKxMn2As2 remains robust up to x = 0.4. The ordered moment is nearly independent of x for 0 <= x <= 0.4 and T-N decreases to 480 K at x = 0.4. DOI: 10.1103/PhysRevB.87.144418
C1 [Lamsal, J.; Tucker, G. S.; Kreyssig, A.; Jesche, A.; Pandey, Abhishek; McQueeney, R. J.; Johnston, D. C.; Goldman, A. I.] Iowa State Univ, Ames Lab, US DOE, Ames, IA 50011 USA.
   [Lamsal, J.; Tucker, G. S.; Kreyssig, A.; Jesche, A.; Pandey, Abhishek; McQueeney, R. J.; Johnston, D. C.; Goldman, A. I.] Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA.
   Univ Missouri, Missouri Res Reactor, Columbia, MO 65211 USA.
   [Tian, Wei] Oak Ridge Natl Lab, Quantum Condensed Matter Div, Oak Ridge, TN 37831 USA.
RP Lamsal, J (reprint author), Iowa State Univ, Ames Lab, US DOE, Ames, IA 50011 USA.
RI Tian, Wei/C-8604-2013; Tucker, Gregory/L-9357-2013; Pandey, Abhishek
   /M-5679-2015; McQueeney, Robert/A-2864-2016
OI Tian, Wei/0000-0001-7735-3187; Tucker, Gregory/0000-0002-2787-8054;
   Pandey, Abhishek /0000-0003-2839-1720; McQueeney,
   Robert/0000-0003-0718-5602
FU Division of Materials Sciences and Engineering, Office of Basic Energy
   Sciences, U.S. Department of Energy [DE-AC02-07CH11358]; Scientific User
   Facilities Division, Office of Basic Energy Sciences, U.S. Department of
   Energy
FX The authors gratefully acknowledge useful discussions with M.
   Ramazanoglu. Work at the Ames Laboratory was supported by the Division
   of Materials Sciences and Engineering, Office of Basic Energy Sciences,
   U.S. Department of Energy, under Contract No. DE-AC02-07CH11358. Work at
   the High Flux Isotope Reactor, Oak Ridge National Laboratory, was
   sponsored by the Scientific User Facilities Division, Office of Basic
   Energy Sciences, U.S. Department of Energy.
NR 18
TC 19
Z9 19
U1 4
U2 56
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD APR 24
PY 2013
VL 87
IS 14
AR 144418
DI 10.1103/PhysRevB.87.144418
PG 5
WC Physics, Condensed Matter
SC Physics
GA 131BD
UT WOS:000317964700002
ER

PT J
AU Dordevic, SV
   Basov, DN
   Homes, CC
AF Dordevic, S. V.
   Basov, D. N.
   Homes, C. C.
TI Do organic and other exotic superconductors fail universal scaling
   relations?
SO SCIENTIFIC REPORTS
LA English
DT Article
ID T-C; CUPRATE SUPERCONDUCTORS; OPTICAL-PROPERTIES; PENETRATION DEPTH;
   TEMPERATURE; STATE; ELECTRODYNAMICS; CONDUCTIVITY
AB Universal scaling relations are of tremendous importance in science, as they reveal fundamental laws of nature. Several such scaling relations have recently been proposed for superconductors; however, they are not really universal in the sense that some important families of superconductors appear to fail the scaling relations, or obey the scaling with different scaling pre-factors. In particular, a large group of materials called organic (or molecular) superconductors are a notable example. Here, we show that such apparent violations are largely due to the fact that the required experimental parameters were collected on different samples, with different experimental techniques. When experimental data is taken on the same sample, using a single experimental technique, organic superconductors, as well as all other studied superconductors, do in fact follow universal scaling relations.
C1 [Dordevic, S. V.] Univ Akron, Dept Phys, Akron, OH 44325 USA.
   [Basov, D. N.] Univ Calif San Diego, Dept Phys, La Jolla, CA 92093 USA.
   [Homes, C. C.] Brookhaven Natl Lab, Condensed Matter Phys & Mat Sci Dept, Upton, NY 11973 USA.
RP Dordevic, SV (reprint author), Univ Akron, Dept Phys, Akron, OH 44325 USA.
EM dsasa@uakron.edu
FU University of Akron FRG; U.S. Department of Energy, Office of Basic
   Energy Sciences, Division of Materials Sciences and Engineering
   [DE-AC02-98CH10886]; National Science Foundation [NSF 1005493]
FX The authors thank C. Petrovic for pointing out the heavy fermion data.
   S. V. D. acknowledges the support from The University of Akron FRG.
   Research supported by the U.S. Department of Energy, Office of Basic
   Energy Sciences, Division of Materials Sciences and Engineering under
   Contract No. DE-AC02-98CH10886. D.N.B. acknowledges support from the
   National Science Foundation (NSF 1005493).
NR 35
TC 6
Z9 6
U1 0
U2 23
PU NATURE PUBLISHING GROUP
PI LONDON
PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND
SN 2045-2322
J9 SCI REP-UK
JI Sci Rep
PD APR 24
PY 2013
VL 3
AR 1713
DI 10.1038/srep01713
PG 4
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA 130OE
UT WOS:000317927100002
ER

PT J
AU Loving, M
   Jimenez-Villacorta, F
   Kaeswurm, B
   Arena, DA
   Marrows, CH
   Lewis, LH
AF Loving, M.
   Jimenez-Villacorta, F.
   Kaeswurm, B.
   Arena, D. A.
   Marrows, C. H.
   Lewis, L. H.
TI Structural evidence for stabilized ferromagnetism in epitaxial FeRh
   nanoislands
SO JOURNAL OF PHYSICS D-APPLIED PHYSICS
LA English
DT Article
ID MAGNETIC TRANSITION; ALLOY; FILMS; PRESSURE
AB Nanoislands of alpha'-FeRh were formed by the deposition of a 10 nm film onto (0 0 1)-MgO and observed by atomic force microscopy. This island-like architecture results in stabilized ferromagnetic (FM) ordering at low temperatures as noted by asymmetry in the x-ray diffraction peaks, a magnetostructural transition with a large magnetic background signal, and broad thermal hysteresis. The combination of structural and magnetic results suggest that the crystallographic arrangement of the FeRh nanoislands consists of a gradient of lattice parameters where there is a compressed inner region of lower lattice parameter values (attributed to antiferromagnetic ordering) which gradually relaxes outward to a region of larger lattice parameters (attributed to a retained FM ordering). The impact of this configuration on magnetostructural transformation is discussed in the context of classical nucleation theory.
C1 [Loving, M.; Jimenez-Villacorta, F.; Kaeswurm, B.; Lewis, L. H.] Northeastern Univ, Dept Chem Engn, Boston, MA 02115 USA.
   [Arena, D. A.] Brookhaven Natl Lab, Natl Synchrotron Light Source, Upton, NY 11973 USA.
   [Marrows, C. H.] Univ Leeds, Sch Phys & Astron, Leeds, W Yorkshire, England.
RP Loving, M (reprint author), Northeastern Univ, Dept Chem Engn, Boston, MA 02115 USA.
EM mloving@coe.neu.edu
RI Jimenez-Villacorta, Felix/C-3924-2009; Kaeswurm, Barbara/F-6253-2011
OI Jimenez-Villacorta, Felix/0000-0001-7257-9208; Kaeswurm,
   Barbara/0000-0002-9194-6277
FU US Department of Energy, Office of Basic Energy Sciences, and Division
   of Materials Sciences and Engineering [DE-SC000525]; National Science
   Foundation [DMR-0908767]; UK Engineering and Physical Sciences Research
   Council [EP/G065640/1]
FX The authors gratefully acknowledge the help and advice from S Langridge
   at ISIS, C Le Graet at the University of Leeds and M A de Vries at the
   University of Edinburgh. Research was supported by the US Department of
   Energy, Office of Basic Energy Sciences, and Division of Materials
   Sciences and Engineering grants No DE-SC000525 (FJV and BK) by the
   National Science Foundation grant No DMR-0908767 (ML and LHL) and UK
   Engineering and Physical Sciences Research Council, Grant No
   EP/G065640/1 (CHM).
NR 22
TC 17
Z9 17
U1 4
U2 41
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0022-3727
J9 J PHYS D APPL PHYS
JI J. Phys. D-Appl. Phys.
PD APR 24
PY 2013
VL 46
IS 16
AR 162002
DI 10.1088/0022-3727/46/16/162002
PG 6
WC Physics, Applied
SC Physics
GA 118OP
UT WOS:000317035200002
ER

PT J
AU Shen, N
   Matthews, MJ
   Elhadj, S
   Miller, PE
   Nelson, AJ
   Hamilton, J
AF Shen, N.
   Matthews, M. J.
   Elhadj, S.
   Miller, P. E.
   Nelson, A. J.
   Hamilton, J.
TI Correlating optical damage threshold with intrinsic defect populations
   in fused silica as a function of heat treatment temperature
SO JOURNAL OF PHYSICS D-APPLIED PHYSICS
LA English
DT Article
ID SURFACE DAMAGE; LASER; DIOXIDE; SPECTROSCOPY; ABSORPTION; MICROSCOPY;
   RESISTANCE; IGNITION; FILMS; SIO2
AB Chemical vapour deposition (CVD) is used for the production of fused silica optics in high-power laser applications. However, relatively little is known about the ultraviolet laser damage threshold of CVD films and how they relate to intrinsic defects produced during deposition. We present here a study relating structural and electronic defects in CVD films to 355 nm pulsed-laser damage threshold as a function of post-deposition annealing temperature (T-HT). Plasma-enhanced CVD based on SiH4/N2O under oxygen-rich conditions was used to deposit 1.5, 3.1 and 6.4 mu m thick films on etched SiO2 substrates. Rapid annealing was performed using a scanned CO2 laser beam up to T-HT similar to 2100 K. The films were then characterized using x-ray photoemission spectroscopy, Fourier transform infrared spectroscopy (FTIR) and photoluminescence spectroscopy. A gradual transition in the damage threshold of annealed films was observed for T-HT values up to 1600 K, correlating with a decrease in non-bridging silanol and oxygen deficient centres. An additional sharp transition in damage threshold also occurs at similar to 1850K indicating substrate annealing. Based on our results, a mechanism for damage-related defect annealing is proposed, and the potential of using high-T-HT CVD SiO2 to mitigate optical damage is also discussed.
C1 [Shen, N.; Matthews, M. J.; Elhadj, S.; Miller, P. E.; Nelson, A. J.; Hamilton, J.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
RP Shen, N (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
EM nshen@llnl.gov
FU Office of Science, Office of Basic Energy Sciences, of the US Department
   of Energy [DE-AC02-05CH11231]; US Department of Energy by Lawrence
   Livermore National Laboratory [DE-AC52-07NA27344]
FX The authors (MM) are indebted to Drs Hans Bechtel and Michael Martin for
   their assistance with SR-FTIR measurements. The Advanced Light Source is
   supported by the Director, Office of Science, Office of Basic Energy
   Sciences, of the US Department of Energy under Contract No
   DE-AC02-05CH11231. This work was performed under the auspices of the US
   Department of Energy by Lawrence Livermore National Laboratory under
   Contract DE-AC52-07NA27344.
NR 32
TC 3
Z9 4
U1 1
U2 36
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0022-3727
J9 J PHYS D APPL PHYS
JI J. Phys. D-Appl. Phys.
PD APR 24
PY 2013
VL 46
IS 16
AR 165305
DI 10.1088/0022-3727/46/16/165305
PG 11
WC Physics, Applied
SC Physics
GA 118OP
UT WOS:000317035200020
ER

PT J
AU Yang, LH
   Shaughnessy, M
   Damewood, L
   Fong, CY
   Liu, K
AF Yang, L. H.
   Shaughnessy, M.
   Damewood, L.
   Fong, C. Y.
   Liu, Kai
TI Half-metallic hole-doped Mn/Si trilayers
SO JOURNAL OF PHYSICS D-APPLIED PHYSICS
LA English
DT Article
ID INITIO MOLECULAR-DYNAMICS; TOTAL-ENERGY CALCULATIONS; AUGMENTED-WAVE
   METHOD; GIANT MAGNETORESISTANCE; BASIS-SET; SPINTRONICS; MULTILAYERS;
   EXCHANGE; DEVICE; DESIGN
AB Metallic trilayers are successfully used to fabricate spintronic devices. To pursue an analogue of layer-structured spintronic materials, we demonstrate that it is possible to obtain attractive magnetic properties in hole-doped Mn/Si trilayers. We found that by forming a trilayer structure, with Mn-occupying interstitial sites, and by introducing a layer of holes in between, the sample can be a half-metal. This new finding should open a viable route to grow Si-based half-metallic spintronic materials because doping Mn at interstitial sites significantly reduces the formation-energy barrier as compared with the transition metal element occupying substitutional sites. An argument is also presented that a finite width of an Mn layer may not destroy the half-metallic property.
C1 [Yang, L. H.] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA.
   [Shaughnessy, M.] Sandia Natl Labs, Livermore, CA 94551 USA.
   [Damewood, L.; Fong, C. Y.; Liu, Kai] Univ Calif Davis, Dept Phys, Davis, CA 95616 USA.
RP Yang, LH (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94551 USA.
EM lyang@llnl.gov
RI Liu, Kai/B-1163-2008
OI Liu, Kai/0000-0001-9413-6782
FU NSF [ECCS-0725902]; US Department of Energy by Lawrence Livermore
   National Laboratory [DE-AC52-07NA27344]
FX This work was supported in part by the NSF Grant No ECCS-0725902. Work
   by LHY was performed under the auspices of the US Department of Energy
   by Lawrence Livermore National Laboratory under Contract No
   DE-AC52-07NA27344.
NR 38
TC 2
Z9 2
U1 0
U2 11
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0022-3727
J9 J PHYS D APPL PHYS
JI J. Phys. D-Appl. Phys.
PD APR 24
PY 2013
VL 46
IS 16
AR 165502
DI 10.1088/0022-3727/46/16/165502
PG 5
WC Physics, Applied
SC Physics
GA 118OP
UT WOS:000317035200023
ER

PT J
AU Charnvanichborikarn, S
   Myers, MT
   Shao, L
   Kucheyev, SO
AF Charnvanichborikarn, S.
   Myers, M. T.
   Shao, L.
   Kucheyev, S. O.
TI Pulsed ion beam measurement of defect diffusion lengths in irradiated
   solids
SO JOURNAL OF PHYSICS-CONDENSED MATTER
LA English
DT Article
ID TRAP-LIMITED MIGRATION; ROOM-TEMPERATURE; POINT-DEFECTS;
   ELECTRON-IRRADIATION; HEAVY-IONS; DOSE-RATE; SILICON; SI; IMPLANTATION;
   SEMICONDUCTORS
AB Radiation-generated point defects in solids often experience dynamic annealing-diffusion and interaction processes after the thermalization of collision cascades. The length scale of dynamic annealing can be described in terms of the characteristic defect diffusion length (L-d). Here, we propose to measure L-d by a pulsed beam method. Our approach is based on the observation of enhanced defect production when, for individual ion pulses, the average separation between adjacent damage regions is smaller than L-d. We obtain a value for L-d of similar to 30 nm for float-zone Si crystals bombarded at room temperature with 500 keV Ar ions.
C1 [Charnvanichborikarn, S.; Myers, M. T.; Kucheyev, S. O.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
   [Myers, M. T.; Shao, L.] Texas A&M Univ, Dept Nucl Engn, College Stn, TX 77843 USA.
RP Charnvanichborikarn, S (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
EM charnvanichb1@llnl.gov
FU US DOE by LLNL [DE-AC52-07NA27344]; NSF [0846835]; LLNL Lawrence Scholar
   Program
FX This work was performed under the auspices of the US DOE by LLNL under
   Contract DE-AC52-07NA27344. L S thanks the support from NSF grant No.
   0846835, and M T M acknowledges the LLNL Lawrence Scholar Program for
   funding.
NR 30
TC 7
Z9 7
U1 0
U2 18
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0953-8984
J9 J PHYS-CONDENS MAT
JI J. Phys.-Condes. Matter
PD APR 24
PY 2013
VL 25
IS 16
AR 162203
DI 10.1088/0953-8984/25/16/162203
PG 4
WC Physics, Condensed Matter
SC Physics
GA 118SM
UT WOS:000317046100003
PM 23524408
ER

PT J
AU Chen, B
   Laverock, J
   Piper, LFJ
   Preston, ARH
   Cho, SW
   DeMasi, A
   Smith, KE
   Scanlon, DO
   Watson, GW
   Egdell, RG
   Glans, PA
   Guo, JH
AF Chen, B.
   Laverock, J.
   Piper, L. F. J.
   Preston, A. R. H.
   Cho, S. W.
   DeMasi, A.
   Smith, K. E.
   Scanlon, D. O.
   Watson, G. W.
   Egdell, R. G.
   Glans, P-A
   Guo, J-H
TI The band structure of WO3 and non-rigid-band behaviour in Na0.67WO3
   derived from soft x-ray spectroscopy and density functional theory
SO JOURNAL OF PHYSICS-CONDENSED MATTER
LA English
DT Article
ID SODIUM-TUNGSTEN BRONZES; ELECTRON-ENERGY-LOSS; OXYGEN VACANCY; NAXWO3;
   OXIDES; STATES; PHOTOEMISSION; TRANSITION; DEPENDENCE; SCATTERING
AB The electronic structure of single-crystal WO3 and Na0.67WO3 (a sodium-tungsten bronze) has been measured using soft x-ray absorption and resonant soft x-ray emission oxygen K-edge spectroscopies. The spectral features show clear differences in energy and intensity between WO3 and Na0.67WO3. The x-ray emission spectrum of metallic Na0.67WO3 terminates in a distinct Fermi edge. The rigid-band model fails to explain the electronic structure of Na0.67WO3 in terms of a simple addition of electrons to the conduction band of WO3. Instead, Na bonding and Na 3s-O 2p hybridization need to be considered for the sodium-tungsten bronze, along with occupation of the bottom of the conduction band. Furthermore, the anisotropy in the band structure of monoclinic gamma-WO3 revealed by the experimental spectra with orbital-resolved geometry is explained via density functional theory calculations. For gamma-WO3 itself, good agreement is found between the experimental O K-edge spectra and the theoretical partial density of states of O 2p orbitals. Indirect and direct bandgaps of insulating WO3 are determined from extrapolating separations between spectral leading edges and accounting for the core-hole energy shift in the absorption process. The O 2p non-bonding states show upward band dispersion as a function of incident photon energy for both compounds, which is explained using the calculated band structure and experimental geometry.
C1 [Chen, B.; Laverock, J.; Piper, L. F. J.; Preston, A. R. H.; Cho, S. W.; DeMasi, A.; Smith, K. E.] Boston Univ, Dept Phys, Boston, MA 02215 USA.
   [Piper, L. F. J.] SUNY Binghamton, Dept Phys Appl Phys & Astron, Binghamton, NY 13902 USA.
   [Scanlon, D. O.; Watson, G. W.] Trinity Coll Dublin, Sch Chem, Dublin 2, Ireland.
   [Scanlon, D. O.; Watson, G. W.] Trinity Coll Dublin, CRANN, Dublin 2, Ireland.
   [Scanlon, D. O.] UCL, London WC1H 0AJ, England.
   [Egdell, R. G.] Univ Oxford, Dept Chem, Chem Res Lab, Oxford OX1 3TA, England.
   [Glans, P-A; Guo, J-H] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Adv Light Source, Berkeley, CA 94720 USA.
RP Chen, B (reprint author), Boston Univ, Dept Phys, 590 Commonwealth Ave, Boston, MA 02215 USA.
EM bchen727@bu.edu
RI Scanlon, David/B-1516-2008; Laverock, Jude/G-4537-2010; Watson,
   Graeme/B-4262-2008; Glans, Per-Anders/G-8674-2016; Piper,
   Louis/C-2960-2011; Chen, Bo/C-5428-2017
OI Scanlon, David/0000-0001-9174-8601; Laverock, Jude/0000-0003-3653-8171;
   Watson, Graeme/0000-0001-6732-9474; Piper, Louis/0000-0002-3421-3210;
   Chen, Bo/0000-0002-9263-5171
FU Department of Energy [DE-FG02-98ER45680, DE-AC02-98CH10886]; US
   Department of Energy [DE-AC02-05CH11231]; SFI through the PI programme
   (PI Grant) [06/IN.1/I92, 06/IN.1/I92/EC07]; EPSRC [EP/F067496]; Ramsay
   Memorial Trust; University College London
FX The Boston University (BU) program is supported by the Department of
   Energy under Grant No. DE-FG02-98ER45680. The ALS is supported by the US
   Department of Energy under Contract No. DE-AC02-05CH11231. The NSLS is
   supported by the Department of Energy under Contract No.
   DE-AC02-98CH10886. The authors thank Dr B H Wanklyn for growth of the
   WO<INF>3</INF> crystals and S Parker for growth of the
   Na<INF>0.67</INF>WO<INF>3</INF> crystals. We also thank Stuart Wilkins
   for assistance with Laue diffraction measurements. The computational
   work in Dublin was supported by SFI through the PI programme (PI Grant
   numbers 06/IN.1/I92 and 06/IN.1/I92/EC07). Calculations were performed
   on the Kelvin supercomputer as maintained by TCHPC, the Stokes cluster
   as maintained by ICHEC. We acknowledge membership of the UK's HPC
   Materials Chemistry Consortium, which is funded by EPSRC grant
   EP/F067496. DOS is grateful to the Ramsay Memorial Trust and University
   College London for the provision of a Ramsay Fellowship.
NR 57
TC 6
Z9 6
U1 6
U2 65
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0953-8984
J9 J PHYS-CONDENS MAT
JI J. Phys.-Condes. Matter
PD APR 24
PY 2013
VL 25
IS 16
AR 165501
DI 10.1088/0953-8984/25/16/165501
PG 10
WC Physics, Condensed Matter
SC Physics
GA 118SM
UT WOS:000317046100007
PM 23553445
ER

PT J
AU Mao, JX
   Lee, AS
   Kitchin, JR
   Nulwala, HB
   Luebke, DR
   Damodaran, K
AF Mao, James X.
   Lee, Anita S.
   Kitchin, John R.
   Nulwala, Hunaid B.
   Luebke, David R.
   Damodaran, Krishnan
TI Interactions in 1-ethyl-3-methyl imidazolium tetracyanoborate ion pair:
   Spectroscopic and density functional study
SO JOURNAL OF MOLECULAR STRUCTURE
LA English
DT Article
DE Ionic liquids; Density Functional Theory; [Emim](+)[TCB](-); Infrared
   spectroscopy; Raman spectroscopy; NBO
ID ENERGY DECOMPOSITION ANALYSIS; MOLECULAR-INTERACTIONS; ELECTRON-DENSITY;
   LIQUIDS; ANIONS; CONDUCTIVITY; CATIONS; SALTS; WATER; BOND
AB Density Functional Theory is used to investigate a weakly coordinating room-temperature ionic liquid, 1-ethyl-3-methyl imidazolium tetracyanoborate ([Emim](+)[TCB](-)). Four locally stable conformers of the ion pair were located. Atoms-in-molecules (AIMs) and electron density analysis indicated the existence of several hydrogen bonds. Further investigation through the Natural Bond Orbital (NBO) and Natural Energy Decomposition Analysis (NEDA) calculations provided insight into the origin of interactions in the [Emim](+)[TCB](-) ion pair. Strength of molecular interactions in the ionic liquid was correlated with frequency shifts of the characteristic vibrations of the ion pair. Harmonic vibrations of the ion pair were also compared with the experimental Raman and Infrared spectra. Vibrational frequencies were assigned by visualizing displacements of atoms around their equilibrium positions and through Potential Energy Distribution (FED) analysis. (C) 2013 Elsevier B.V. All rights reserved.
C1 [Mao, James X.; Damodaran, Krishnan] Univ Pittsburgh, Dept Chem, Pittsburgh, PA 15260 USA.
   [Lee, Anita S.; Kitchin, John R.] Carnegie Mellon Univ, Dept Chem Engn, Pittsburgh, PA 15213 USA.
   [Nulwala, Hunaid B.; Luebke, David R.] Natl Energy Technol Lab, Pittsburgh, PA 15236 USA.
RP Damodaran, K (reprint author), Univ Pittsburgh, Dept Chem, Pittsburgh, PA 15260 USA.
EM damodak@pitt.edu
RI Nulwala, Hunaid/G-8126-2012; Kitchin, John/A-2363-2010
OI Nulwala, Hunaid/0000-0001-7481-3723; Kitchin, John/0000-0003-2625-9232
FU National Energy Technology Laboratory under the RES [DE-FE0004000]
FX This technical effort was performed in support of the National Energy
   Technology Laboratory's ongoing research in CO<INF>2</INF> Capture under
   the RES contract DE-FE0004000.
NR 37
TC 12
Z9 12
U1 0
U2 63
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0022-2860
J9 J MOL STRUCT
JI J. Mol. Struct.
PD APR 24
PY 2013
VL 1038
BP 12
EP 18
DI 10.1016/j.molstruc.2013.01.046
PG 7
WC Chemistry, Physical
SC Chemistry
GA 111GG
UT WOS:000316509200003
ER

PT J
AU Parrish, NF
   Gao, F
   Li, H
   Giorgi, EE
   Barbian, HJ
   Parrish, EH
   Zajic, L
   Iyer, SS
   Decker, JM
   Kumar, A
   Hora, B
   Berg, A
   Cai, FP
   Hopper, J
   Denny, TN
   Ding, HT
   Ochsenbauer, C
   Kappes, JC
   Galimidi, RP
   West, AP
   Bjorkman, PJ
   Wilen, CB
   Doms, RW
   O'Brien, M
   Bhardwaj, N
   Borrow, P
   Haynes, BF
   Muldoon, M
   Theiler, JP
   Korber, B
   Shaw, GM
   Hahn, BH
AF Parrish, Nicholas F.
   Gao, Feng
   Li, Hui
   Giorgi, Elena E.
   Barbian, Hannah J.
   Parrish, Erica H.
   Zajic, Lara
   Iyer, Shilpa S.
   Decker, Julie M.
   Kumar, Amit
   Hora, Bhavna
   Berg, Anna
   Cai, Fangping
   Hopper, Jennifer
   Denny, Thomas N.
   Ding, Haitao
   Ochsenbauer, Christina
   Kappes, John C.
   Galimidi, Rachel P.
   West, Anthony P., Jr.
   Bjorkman, Pamela J.
   Wilen, Craig B.
   Doms, Robert W.
   O'Brien, Meagan
   Bhardwaj, Nina
   Borrow, Persephone
   Haynes, Barton F.
   Muldoon, Mark
   Theiler, James P.
   Korber, Bette
   Shaw, George M.
   Hahn, Beatrice H.
TI Phenotypic properties of transmitted founder HIV-1
SO PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF
   AMERICA
LA English
DT Article
DE mucosal HIV-1 transmission; acute HIV-1 infection; innate immunity;
   epidemic HIV-1 spread
ID HUMAN-IMMUNODEFICIENCY-VIRUS; DENDRITIC CELLS; T-CELLS; HETEROSEXUAL
   TRANSMISSION; INTERFERON-ALPHA; RHESUS MACAQUES; DC-SIGN; TYPE-1
   INTERFERON; ENVELOPE GP120; SEX WORKERS
AB Defining the virus-host interactions responsible for HIV-1 transmission, including the phenotypic requirements of viruses capable of establishing de novo infections, could be important for AIDS vaccine development. Previous analyses have failed to identify phenotypic properties other than chemokine receptor 5 (CCR5) and CD4+ T-cell tropism that are preferentially associated with viral transmission. However, most of these studies were limited to examining envelope (Env) function in the context of pseudoviruses. Here, we generated infectious molecular clones of transmitted founder (TF; n = 27) and chronic control (CC; n = 14) viruses of subtypes B (n = 18) and C (n = 23) and compared their phenotypic properties in assays specifically designed to probe the earliest stages of HIV-1 infection. We found that TF virions were 1.7-fold more infectious (P = 0.049) and contained 1.9-fold more Env per particle (P = 0.048) compared with CC viruses. TF viruses were also captured by monocyte-derived dendritic cells 1.7-fold more efficiently (P = 0.035) and more readily transferred to CD4+ T cells (P = 0.025). In primary CD4+ T cells, TF and CC viruses replicated with comparable kinetics; however, when propagated in the presence of IFN-alpha, TF viruses replicated to higher titers than CC viruses. This difference was significant for subtype B (P = 0.000013) but not subtype C (P = 0.53) viruses, possibly reflecting demographic differences of the respective patient cohorts. Together, these data indicate that TF viruses are enriched for higher Env content, enhanced cell-free infectivity, improved dendritic cell interaction, and relative IFN-alpha resistance. These viral properties, which likely act in concert, should be considered in the development and testing of AIDS vaccines.
C1 [Parrish, Nicholas F.; Li, Hui; Barbian, Hannah J.; Parrish, Erica H.; Zajic, Lara; Iyer, Shilpa S.; Wilen, Craig B.; Shaw, George M.; Hahn, Beatrice H.] Univ Penn, Perelman Sch Med, Dept Med, Philadelphia, PA 19104 USA.
   [Parrish, Nicholas F.; Barbian, Hannah J.; Iyer, Shilpa S.; Wilen, Craig B.; Doms, Robert W.; Shaw, George M.; Hahn, Beatrice H.] Univ Penn, Perelman Sch Med, Dept Microbiol, Philadelphia, PA 19104 USA.
   [Gao, Feng; Kumar, Amit; Hora, Bhavna; Berg, Anna; Cai, Fangping; Hopper, Jennifer; Denny, Thomas N.; Haynes, Barton F.] Duke Univ, Sch Med, Duke Human Vaccine Inst, Durham, NC 27710 USA.
   [Gao, Feng; Denny, Thomas N.; Haynes, Barton F.] Duke Univ, Sch Med, Dept Med, Durham, NC 27710 USA.
   [Haynes, Barton F.] Duke Univ, Sch Med, Dept Immunol, Durham, NC 27710 USA.
   [Giorgi, Elena E.; Theiler, James P.; Korber, Bette] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA.
   [Decker, Julie M.; Ding, Haitao; Ochsenbauer, Christina; Kappes, John C.] Univ Alabama Birmingham, Dept Med, Birmingham, AL 35294 USA.
   [Galimidi, Rachel P.; West, Anthony P., Jr.; Bjorkman, Pamela J.] CALTECH, Div Biol, Pasadena, CA 91125 USA.
   [Bjorkman, Pamela J.] CALTECH, Howard Hughes Med Inst, Pasadena, CA 91125 USA.
   [Doms, Robert W.] Childrens Hosp Philadelphia, Dept Pathol & Lab Med, Philadelphia, PA 19104 USA.
   [O'Brien, Meagan; Bhardwaj, Nina] NYU, Sch Med, Dept Med, New York, NY 10016 USA.
   [Bhardwaj, Nina] NYU, Sch Med, Dept Pathol, New York, NY 10016 USA.
   [Bhardwaj, Nina] NYU, Sch Med, Dept Dermatol, New York, NY 10016 USA.
   [Borrow, Persephone] Univ Oxford, John Radcliffe Hosp, Weatherall Inst Mol Med, Nuffield Dept Clin Med, Oxford OX3 9DS, England.
   [Muldoon, Mark] Univ Manchester, Sch Math, Manchester M13 9PL, Lancs, England.
RP Hahn, BH (reprint author), Univ Penn, Perelman Sch Med, Dept Med, Philadelphia, PA 19104 USA.
EM bhahn@upenn.edu
RI Muldoon, Mark/C-7505-2009; 
OI Parrish, Nicholas/0000-0002-6971-8016; Wilen, Craig/0000-0003-2495-9403;
   Denny, Thomas/0000-0002-7364-8276; Muldoon, Mark/0000-0002-5004-7195;
   Korber, Bette/0000-0002-2026-5757
FU National Institutes of Health (NIH) [R01 AI45378, R01 AI04088, P30
   AI45008, P30 AI27767]; Center for HIV/AIDS Vaccine Immunology [U19
   AI067854]; Center for HIV/AIDS Vaccine Immunology and Immunogen [UM1
   AI100645]; Bill and Melinda Gates Foundation [37874]; NIH [T32 AI07632]
FX We thank John Moore, Frank Kirchhoff, Paul Sharp, and Stuart Shapiro for
   helpful discussions; the University of Pennsylvania's Center for AIDS
   Research (CFAR) Human Immunology, Flow Cytometry, and Viral and
   Molecular Core facilities for reagents and protocols; and Patricia
   Crystal for artwork and manuscript preparation. This work was supported
   by National Institutes of Health (NIH) Grants R01 AI45378, R01 AI04088,
   P30 AI45008, and P30 AI27767, Center for HIV/AIDS Vaccine Immunology
   Grant U19 AI067854, Center for HIV/AIDS Vaccine Immunology and Immunogen
   Discovery Grant UM1 AI100645, and Bill and Melinda Gates Foundation
   Grant 37874. N.F.P., S. S. I., and C. B. W. were supported by NIH
   Training Grant T32 AI07632.
NR 83
TC 140
Z9 143
U1 3
U2 26
PU NATL ACAD SCIENCES
PI WASHINGTON
PA 2101 CONSTITUTION AVE NW, WASHINGTON, DC 20418 USA
SN 0027-8424
J9 P NATL ACAD SCI USA
JI Proc. Natl. Acad. Sci. U. S. A.
PD APR 23
PY 2013
VL 110
IS 17
BP 6626
EP 6633
DI 10.1073/pnas.1304288110
PG 8
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA 140TE
UT WOS:000318677300020
PM 23542380
ER

PT J
AU Schaeffer, H
   Caflisch, R
   Hauck, CD
   Osher, S
AF Schaeffer, Hayden
   Caflisch, Russel
   Hauck, Cory D.
   Osher, Stanley
TI Sparse dynamics for partial differential equations
SO PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF
   AMERICA
LA English
DT Article
DE multiphysics; multiscale; optimization
ID ELLIPTIC PROBLEMS
AB We investigate the approximate dynamics of several differential equations when the solutions are restricted to a sparse subset of a given basis. The restriction is enforced at every time step by simply applying soft thresholding to the coefficients of the basis approximation. By reducing or compressing the information needed to represent the solution at every step, only the essential dynamics are represented. In many cases, there are natural bases derived from the differential equations, which promote sparsity. We find that our method successfully reduces the dynamics of convection equations, diffusion equations, weak shocks, and vorticity equations with high-frequency source terms.
C1 [Schaeffer, Hayden; Caflisch, Russel; Osher, Stanley] Univ Calif Los Angeles, Dept Math, Los Angeles, CA 90095 USA.
   [Hauck, Cory D.] Oak Ridge Natl Lab, Comp Sci & Math Div, Oak Ridge, TN 37831 USA.
RP Osher, S (reprint author), Univ Calif Los Angeles, Dept Math, Los Angeles, CA 90095 USA.
EM sjo@math.ucla.edu
OI Schaeffer, Hayden/0000-0003-1379-1238
FU Department of Defense through the National Defense Science and
   Engineering Graduate Fellowship Program; Office of Naval Research
   [N00014-11-1-719]; Department of Energy (DOE) [DE-FG02-05ER25710];
   Office of Advanced Scientific Computing Research, DOE; University of
   Tennessee-Battelle [DE-AC05-00OR22725]
FX The research of H. S. was supported by the Department of Defense through
   the National Defense Science and Engineering Graduate Fellowship
   Program. The research of S.O. was supported by the Office of Naval
   Research (Grant N00014-11-1-719). The research of R. C. was supported by
   the Department of Energy (DOE; Grant DE-FG02-05ER25710). The research of
   C. D. H. was sponsored by the Office of Advanced Scientific Computing
   Research, DOE. C.D.H.'s work was performed at the Oak Ridge National
   Laboratory, which is managed by the University of Tennessee-Battelle
   under Contract DE-AC05-00OR22725.
NR 18
TC 24
Z9 24
U1 2
U2 15
PU NATL ACAD SCIENCES
PI WASHINGTON
PA 2101 CONSTITUTION AVE NW, WASHINGTON, DC 20418 USA
SN 0027-8424
J9 P NATL ACAD SCI USA
JI Proc. Natl. Acad. Sci. U. S. A.
PD APR 23
PY 2013
VL 110
IS 17
BP 6634
EP 6639
DI 10.1073/pnas.1302752110
PG 6
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA 140TE
UT WOS:000318677300021
PM 23533273
ER

PT J
AU Henzie, J
   Andrews, SC
   Ling, XY
   Li, ZY
   Yang, PD
AF Henzie, Joel
   Andrews, Sean C.
   Ling, Xing Yi
   Li, Zhiyong
   Yang, Peidong
TI Oriented assembly of polyhedral plasmonic nanoparticle clusters
SO PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF
   AMERICA
LA English
DT Article
DE nanocrystal; self-assembly; plasmonics; nanopatterning
ID ENHANCED RAMAN-SPECTROSCOPY; SILVER NANOCUBE DIMERS; OPTICAL-PROPERTIES;
   NANOSTRUCTURES; SERS; NANOCRYSTALS; LIGHT; MODEL; GOLD
AB Shaped colloids can be used as nanoscale building blocks for the construction of composite, functional materials that are completely assembled from the bottom up. Assemblies of noble metal nanostructures have unique optical properties that depend on key structural features requiring precise control of both position and connectivity spanning nanometer to micrometer length scales. Identifying and optimizing structures that strongly couple to light is important for understanding the behavior of surface plasmons in small nanoparticle clusters, and can result in highly sensitive chemical and biochemical sensors using surface-enhanced Raman spectroscopy (SERS). We use experiment and simulation to examine the local surface plasmon resonances of different arrangements of Ag polyhedral clusters. High-resolution transmission electron microscopy shows that monodisperse, atomically smooth Ag polyhedra can self-assemble into uniform interparticle gaps that result in reproducible SERS enhancement factors from assembly to assembly. We introduce a large-scale, gravity-driven assembly method that can generate arbitrary nanoparticle clusters based on the size and shape of a patterned template. These templates enable the systematic examination of different cluster arrangements and provide a means of constructing scalable and reliable SERS sensors.
C1 [Henzie, Joel; Andrews, Sean C.; Ling, Xing Yi; Yang, Peidong] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA.
   [Li, Zhiyong] Hewlett Packard Lab, Cognit Syst Lab, Palo Alto, CA 94304 USA.
   [Yang, Peidong] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94720 USA.
RP Yang, PD (reprint author), Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA.
EM p_yang@berkeley.edu
RI Ling, Xing Yi/H-9755-2012; Henzie, Joel/B-9564-2013; Henzie,
   Joel/E-2332-2015
OI Ling, Xing Yi/0000-0001-5495-6428; Henzie, Joel/0000-0002-9190-2645;
   Henzie, Joel/0000-0002-9190-2645
FU Defense Advanced Research Projects Agency
FX This work was supported by Defense Advanced Research Projects Agency. We
   thank Ivan Naumov and Alexandre M. Bratkovski from Hewlett-Packard Labs
   for valuable discussions on simulation. We also thank Xuema Li from
   Hewlett-Packard Labs for nanofabrication support.
NR 43
TC 51
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U1 6
U2 178
PU NATL ACAD SCIENCES
PI WASHINGTON
PA 2101 CONSTITUTION AVE NW, WASHINGTON, DC 20418 USA
SN 0027-8424
J9 P NATL ACAD SCI USA
JI Proc. Natl. Acad. Sci. U. S. A.
PD APR 23
PY 2013
VL 110
IS 17
BP 6640
EP 6645
DI 10.1073/pnas.1218616110
PG 6
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA 140TE
UT WOS:000318677300022
PM 23569275
ER

PT J
AU Elsen, A
   Festersen, S
   Runge, B
   Koops, CT
   Ocko, BM
   Deutsch, M
   Seeck, OH
   Murphy, BM
   Magnussen, OM
AF Elsen, Annika
   Festersen, Sven
   Runge, Benjamin
   Koops, Christian T.
   Ocko, Benjamin M.
   Deutsch, Moshe
   Seeck, Oliver H.
   Murphy, Bridget M.
   Magnussen, Olaf M.
TI In situ X-ray studies of adlayer-induced crystal nucleation at the
   liquid-liquid interface
SO PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF
   AMERICA
LA English
DT Article
DE electrochemistry; liquid metal
ID CRYSTALLOGRAPHY OPEN DATABASE; OPEN-ACCESS COLLECTION; LIQUID/LIQUID
   INTERFACE; MERCURY-ELECTRODES; CAPILLARY WAVES; WATER INTERFACE;
   SURFACE; REFLECTIVITY; NANOPARTICLES; ADSORPTION
AB Crystal nucleation and growth at a liquid-liquid interface is studied on the atomic scale by in situ angstrom-resolution X-ray scattering methods for the case of liquid Hg and an electrochemical dilute electrolyte containing Pb2+, F-, and Br- ions. In the regime negative of the Pb amalgamation potential Phi(rp) = -0.70 V, no change is observed from the surface-layered structure of pure Hg. Upon potential-induced release of Pb2+ from the Hg bulk at Phi > Phi(rp), the formation of an intriguing interface structure is observed, comprising a well-defined 7.6-angstrom-thick adlayer, decorated with structurally related 3D crystallites. Both are identified by their diffraction peaks as PbFBr, preferentially aligned with their (c) over right arrow axis along the interface normal. X-ray reflectivity shows the adlayer to consist of a stack of five ionic layers, forming a single-unit-cell-thick crystalline PbFBr precursor film, which acts as a template for the subsequent quasiepitaxial 3D crystal growth. This growth behavior is assigned to the combined action of electrostatic and short-range chemical interactions.
C1 [Elsen, Annika; Festersen, Sven; Runge, Benjamin; Koops, Christian T.; Murphy, Bridget M.; Magnussen, Olaf M.] Univ Kiel, Inst Expt & Appl Phys, D-24098 Kiel, Germany.
   [Ocko, Benjamin M.] Brookhaven Natl Lab, Condensed Matter Phys & Mat Sci Dept, Upton, NY 11973 USA.
   [Deutsch, Moshe] Bar Ilan Univ, Dept Phys, IL-52900 Ramat Gan, Israel.
   [Deutsch, Moshe] Bar Ilan Univ, Inst Nanotechnol & Adv Mat, IL-52900 Ramat Gan, Israel.
   [Seeck, Oliver H.] Deutsch Elektronensynchrotron DESY, D-22607 Hamburg, Germany.
   [Murphy, Bridget M.; Magnussen, Olaf M.] Univ Kiel, Ruprecht Haensel Lab, D-24098 Kiel, Germany.
RP Murphy, BM (reprint author), Univ Kiel, Inst Expt & Appl Phys, Olshaussenstr 40, D-24098 Kiel, Germany.
EM murphy@physik.uni-kiel.de
FU Bundesministerium fuer Bildung und Forschung (BMBF) [05KS10FK2]; United
   States-Israel Binational Science Foundation; US Department of Energy,
   Basic Energy Sciences, Materials Sciences and Engineering Division
   [DE-AC02-98CH10886]
FX We thank the beamline staff of P08 at PETRA III and Dr. I. Kuzmenko and
   the staff of ID-9 at the Advanced Photon Source for their support. This
   work is supported by the Bundesministerium fuer Bildung und Forschung
   (BMBF) (Project 05KS10FK2), the United States-Israel Binational Science
   Foundation, and by the US Department of Energy, Basic Energy Sciences,
   Materials Sciences and Engineering Division, supported under Contract
   DE-AC02-98CH10886.
NR 47
TC 10
Z9 10
U1 2
U2 65
PU NATL ACAD SCIENCES
PI WASHINGTON
PA 2101 CONSTITUTION AVE NW, WASHINGTON, DC 20418 USA
SN 0027-8424
J9 P NATL ACAD SCI USA
JI Proc. Natl. Acad. Sci. U. S. A.
PD APR 23
PY 2013
VL 110
IS 17
BP 6663
EP 6668
DI 10.1073/pnas.1301800110
PG 6
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA 140TE
UT WOS:000318677300026
PM 23553838
ER

PT J
AU Stone, DA
   Paciorek, CJ
   Prabhat
   Pall, P
   Wehner, M
AF Stone, Daithi A.
   Paciorek, Christopher J.
   Prabhat
   Pall, Pardeep
   Wehner, Michael
TI Inferring the anthropogenic contribution to local temperature extremes
SO PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF
   AMERICA
LA English
DT Letter
C1 [Stone, Daithi A.; Prabhat; Pall, Pardeep; Wehner, Michael] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Computat Res Div, Berkeley, CA 94720 USA.
   [Paciorek, Christopher J.] Univ Calif Berkeley, Dept Stat, Berkeley, CA 94720 USA.
RP Stone, DA (reprint author), Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Computat Res Div, Berkeley, CA 94720 USA.
EM dstone@lbl.gov
NR 5
TC 2
Z9 2
U1 0
U2 7
PU NATL ACAD SCIENCES
PI WASHINGTON
PA 2101 CONSTITUTION AVE NW, WASHINGTON, DC 20418 USA
SN 0027-8424
J9 P NATL ACAD SCI USA
JI Proc. Natl. Acad. Sci. U. S. A.
PD APR 23
PY 2013
VL 110
IS 17
BP E1543
EP E1543
DI 10.1073/pnas.1221461110
PG 1
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA 140TE
UT WOS:000318677300001
PM 23513228
ER

PT J
AU Harrell, SM
   McBride, JR
   Rosenthal, SJ
AF Harrell, Sarah M.
   McBride, James R.
   Rosenthal, Sandra J.
TI Synthesis of Ultrasmall and Magic-Sized CdSe Nanocrystals
SO CHEMISTRY OF MATERIALS
LA English
DT Review
DE ultrasmall; magic-sized; nanocrystal; synthesis
ID WHITE-LIGHT EMISSION; CADMIUM SELENIDE NANOCRYSTALS; PAIR DISTRIBUTION
   FUNCTION; QUANTUM DOTS; SEMICONDUCTOR NANOCRYSTALS; ALTERNATIVE ROUTES;
   OPTICAL-PROPERTIES; MASS-SPECTROMETRY; BAND-GAP; II-VI
AB Nanocrystals exhibit useful properties not found in their bulk counterparts; however, a subclass of nanocrystals that consist of diameters on the order of 2 nm or less further exhibit unique properties. As synthetic methodologies of nanocrystals have matured, greater emphasis has been made on controlling the early stages of the reaction in order to gain access to these sub-2 nm species. This review provides an overview of ultrasmall and magic-sized nanocrystals, and the diverse chemical means to obtain them. Due to their small size and their resultant properties, these ultrasmall and magic-sized nanocrystals have a distinct advantage in many applications including achieving renal clearance for the purpose of biological imaging, producing simple and high-quality white LEDs, and controlling the growth of nanocrystals to produce various morphologies.
C1 [McBride, James R.; Rosenthal, Sandra J.] Vanderbilt Univ, Dept Chem, Nashville, TN 37235 USA.
   [Rosenthal, Sandra J.] Vanderbilt Univ, Dept Phys & Astron, Dept Pharmacol, Dept Chem & Biomol Engn, Nashville, TN 37235 USA.
   [Rosenthal, Sandra J.] Vanderbilt Univ, Vanderbilt Inst Nanoscale Sci & Engn, Nashville, TN 37235 USA.
   [Harrell, Sarah M.; Rosenthal, Sandra J.] Vanderbilt Univ, Dept Interdisciplinary Mat Sci, Nashville, TN 37235 USA.
   [Rosenthal, Sandra J.] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA.
RP Rosenthal, SJ (reprint author), Vanderbilt Univ, Dept Chem, VU Stn B Box 351822, Nashville, TN 37235 USA.
EM sandra.j.rosenthal@vanderbilt.edu
RI McBride, James/D-2934-2012
OI McBride, James/0000-0003-0161-7283
FU National Science Foundation (TN-SCORE) [EPS-1004083]
FX This work was supported by a grant from the National Science Foundation
   (EPS-1004083) (TN-SCORE).
NR 76
TC 36
Z9 36
U1 15
U2 153
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0897-4756
J9 CHEM MATER
JI Chem. Mat.
PD APR 23
PY 2013
VL 25
IS 8
BP 1199
EP 1210
DI 10.1021/cm303318f
PG 12
WC Chemistry, Physical; Materials Science, Multidisciplinary
SC Chemistry; Materials Science
GA 133NB
UT WOS:000318144000006
ER

PT J
AU Buonsanti, R
   Milliron, DJ
AF Buonsanti, Raffaella
   Milliron, Delia J.
TI Chemistry of Doped Colloidal Nanocrystals
SO CHEMISTRY OF MATERIALS
LA English
DT Review
DE nanoparticle; single source precursor; defects; photoluminescence;
   core/shell; semiconductor
ID CDSE QUANTUM DOTS; SINGLE-SOURCE PRECURSOR; DOPING SEMICONDUCTOR
   NANOCRYSTALS; CDS/ZNS CORE/SHELL NANOCRYSTALS; DILUTED MAGNETIC
   SEMICONDUCTOR; METAL-OXIDE NANOPARTICLES; ONE-STEP SYNTHESIS; ZNSE
   NANOCRYSTALS; ZNO NANOCRYSTALS; THIN-FILMS
AB Synthetic control over inorganic nanocrystals has made dramatic strides so that a great number of binary and a few ternary or more complex compounds can now be prepared with good control over size and physical properties. Recently, chemists have tackled the long-standing challenge of introducing dopant atoms into nanocrystals, and strategies that apply across diverse compositions are beginning to emerge. In this review, we first briefly summarize the array of characterization methods used to assess doping efficacy for reference throughout the discussion. We then enumerate chemical strategies for doping with illustrative examples from the literature. A key concept is that the reactions leading to growth of the host crystal and to deposition of dopant ions must be balanced to succeed in incorporating dopants during crystal growth. This challenge has been met through various chemical strategies, and new methods, such as postsynthetic diffusion of dopant ions, continue to be developed. The opportunity to deliver new functionality by doping nanocrystals is great, particularly as characterization methods and synthetic control over introduction of multiple dopants advance.
C1 [Buonsanti, Raffaella; Milliron, Delia J.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Mol Foundry, Berkeley, CA 94720 USA.
RP Buonsanti, R (reprint author), Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Mol Foundry, Berkeley, CA 94720 USA.
EM rbuonsanti@lbl.gov; dmilliron@lbl.gov
RI Milliron, Delia/D-6002-2012; Foundry, Molecular/G-9968-2014
FU Office of Science, Office of Basic Energy Sciences, of the U.S.
   Department of Energy (DOE) [DE-AC02-05CH11231]; DOE Early Career
   Research Program grant
FX This work was performed at the Molecular Foundry, Lawrence Berkeley
   National Laboratory, and was supported by the Office of Science, Office
   of Basic Energy Sciences, of the U.S. Department of Energy (DOE) under
   Contract No. DE-AC02-05CH11231. D.J.M. was supported by a DOE Early
   Career Research Program grant under the same contract.
NR 124
TC 110
Z9 111
U1 35
U2 434
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0897-4756
J9 CHEM MATER
JI Chem. Mat.
PD APR 23
PY 2013
VL 25
IS 8
BP 1305
EP 1317
DI 10.1021/cm304104m
PG 13
WC Chemistry, Physical; Materials Science, Multidisciplinary
SC Chemistry; Materials Science
GA 133NB
UT WOS:000318144000015
ER

PT J
AU Hollingsworth, JA
AF Hollingsworth, Jennifer A.
TI Heterostructuring Nanocrystal Quantum Dots Toward Intentional
   Suppression of Blinking and Auger Recombination
SO CHEMISTRY OF MATERIALS
LA English
DT Review
DE nanocrystal quantum dots; blinking; Auger recombination; core/shell;
   giant; alloyed; type II
ID CDSE/CDS CORE/SHELL NANOCRYSTALS; SEMICONDUCTOR NANOCRYSTALS;
   FLUORESCENCE INTERMITTENCY; SINGLE; CORE; PHOTOLUMINESCENCE;
   SPECTROSCOPY; HETERONANOCRYSTALS; NANOPARTICLES; LUMINESCENCE
AB At the level of a single particle, nanocrystal quantum dots (NQDs) are observed to fluoresce intermittently or "blink." They are also characterized by an efficient nonradiative recombination process known as Auger recombination (AR). Recently, new approaches to NQD heterostructuring have been developed that directly impact both blinking and AR, resulting in dramatic suppression of these unwanted processes. The three successful hetero-NQD motifs are reviewed here: (1) interfacial alloying, (2) thick or "giant" shells, and (3) specific type-II electronic structures. These approaches, which rely on modifying or tuning internal NQD core/shell structures, are compared with alternative strategies for blinking suppression that rely, instead, on surface modifications or surface mediated interactions. Finally, in each case, the unique synthetic approaches or challenges addressed that have driven the realization of novel and important functionality are discussed, along with the implications for development of a comprehensive "materials design" strategy for blinking and AR suppressed heterostructured NQDs.
C1 Los Alamos Natl Lab, Mat Phys & Applicat Div, Ctr Integrated Nanotechnol, Los Alamos, NM 87544 USA.
RP Hollingsworth, JA (reprint author), Los Alamos Natl Lab, Mat Phys & Applicat Div, Ctr Integrated Nanotechnol, POB 1663, Los Alamos, NM 87544 USA.
EM jenn@lanl.gov
FU Los Alamos National Laboratory Directed Research and Development (LDRD)
   Program; NIH-NIGMS [1R01GM084702-01]; Single Investigator Small Group
   Research Grant, Office of Basic Energy Sciences (OBES), Office of
   Science (OS), U.S. Department of Energy (DOE) [2009LANL1096]; National
   Nuclear Security Administration of the U.S. Department of Energy
   [DE-ACS2-06NA25396]
FX J.A.H. is supported, in part, by the Los Alamos National Laboratory
   Directed Research and Development (LDRD) Program. She also acknowledges
   that applied research toward the development and application of
   nonblinking infrared quantum dots as molecular probes is supported by
   NIH-NIGMS Grant 1R01GM084702-01, whereas research directed toward the
   elimination of nonradiative processes relevant to applications in
   solid-state lighting is supported by a Single Investigator Small Group
   Research Grant (2009LANL1096), Office of Basic Energy Sciences (OBES),
   Office of Science (OS), U.S. Department of Energy (DOE). Some of the
   work reviewed here was performed at the Center for Integrated
   Nanotechnologies, a U.S. DOE, OBES user facility. Los Alamos National
   Laboratory, an affirmative action equal opportunity employer, is
   operated by Los Alamos National Security, LLC, for the National Nuclear
   Security Administration of the U.S. Department of Energy under Contract
   DE-ACS2-06NA25396.
NR 75
TC 22
Z9 22
U1 6
U2 121
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0897-4756
EI 1520-5002
J9 CHEM MATER
JI Chem. Mat.
PD APR 23
PY 2013
VL 25
IS 8
BP 1318
EP 1331
DI 10.1021/cm304161d
PG 14
WC Chemistry, Physical; Materials Science, Multidisciplinary
SC Chemistry; Materials Science
GA 133NB
UT WOS:000318144000016
PM 24062602
ER

PT J
AU Olson, TY
   Chernov, AA
   Drabek, BA
   Satcher, JH
   Han, TYJ
AF Olson, Tammy Y.
   Chernov, Alexander A.
   Drabek, Brent A.
   Satcher, Joe H., Jr.
   Han, T. Yong-Jin
TI Experimental Validation of the Geometrical Selection Model for
   Hydrothermally Grown Zinc Oxide Nanowire Arrays
SO CHEMISTRY OF MATERIALS
LA English
DT Article
DE zinc oxide; nanowires; geometrical selection; texturing; modeling;
   array; thin film
ID ZNO THIN-FILMS; CHEMICAL-VAPOR-DEPOSITION; TEMPERATURE AQUEOUS
   SYNTHESIS; SENSITIZED SOLAR-CELLS; NANOROD ARRAYS; RAMAN-SPECTROSCOPY;
   OPTICAL-PROPERTIES; PATTERNED GROWTH; NANOSTRUCTURES; ORIENTATION
AB Zinc oxide nanowire arrays were hydrothermally grown on a Si(100) substrate coated with randomly oriented seed crystallites to characterize the process of geometrical selection. The theory suggests that randomly oriented rod-like crystallites can be grown into a film or array of nanowires with the maximal growth rate direction approximately normal to the substrate; in the case of ZnO, this is the c-axis direction. To examine this growth phenomenon experimentally, ZnO nanowire arrays with a random initial orientation were grown, and the number of wires that survived the geometrical selection up to a certain distance, h, from the substrate was measured. The resulting number density of the survived wires decreased as h(-0.8) while the geometrical selection model predicted the decrease to be similar to h(-1). As developed originally, the model can also apply universally to other three-dimensional (3D) crystal ensembles besides ZnO. Understanding geometrical selection will allow assessment of if and when this theory can be used to obtain films with certain characteristics, such as the orientation and scattering of the nanowire array, that is relevant for specific applications.
C1 [Olson, Tammy Y.; Chernov, Alexander A.; Drabek, Brent A.; Satcher, Joe H., Jr.; Han, T. Yong-Jin] Lawrence Livermore Natl Lab, Phys & Life Sci Directorate, Livermore, CA 94550 USA.
   [Drabek, Brent A.] USAF Acad, Dept Chem, Colorado Springs, CO 80840 USA.
RP Han, TYJ (reprint author), Lawrence Livermore Natl Lab, Phys & Life Sci Directorate, 7000 East Ave L-235, Livermore, CA 94550 USA.
EM han5@llnl.gov
FU U.S. Department of Energy by Lawrence Livermore National Laboratory
   (LLNL) [DE-AC52-07NA27344]; University of California Laboratory Fees
   Research Grant; Laboratory Directed Research and Development Program at
   LLNL [09-LW-024]
FX This work performed under the auspices of the U.S. Department of Energy
   by Lawrence Livermore National Laboratory (LLNL) under Contract
   DE-AC52-07NA27344. The project was funded by the University of
   California Laboratory Fees Research Grant and the Laboratory Directed
   Research and Development Program (09-LW-024) at LLNL. We thank Dr.
   Christine A. Orme and Ms. Kristen E. Murphy for their helpful
   discussions.
NR 62
TC 10
Z9 10
U1 3
U2 47
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0897-4756
EI 1520-5002
J9 CHEM MATER
JI Chem. Mat.
PD APR 23
PY 2013
VL 25
IS 8
BP 1363
EP 1371
DI 10.1021/cm300679x
PG 9
WC Chemistry, Physical; Materials Science, Multidisciplinary
SC Chemistry; Materials Science
GA 133NB
UT WOS:000318144000019
ER

PT J
AU Lim, J
   Bae, WK
   Park, KU
   zur Borg, L
   Zentel, R
   Lee, S
   Char, K
AF Lim, Jaehoon
   Bae, Wan Ki
   Park, Ko Un
   zur Borg, Lisa
   Zentel, Rudolf
   Lee, Seonghoon
   Char, Kookheon
TI Controlled Synthesis of CdSe Tetrapods with High Morphological
   Uniformity by the Persistent Kinetic Growth and the Halide-Mediated
   Phase Transformation
SO CHEMISTRY OF MATERIALS
LA English
DT Article
DE tetrapods; continuous precursor injection; halide ligands; kinetic
   growth; shape control
ID SEEDED GROWTH; COLLOIDAL NANOCRYSTALS; SOLAR-CELLS; SHAPE; STABILITY;
   DYNAMICS; NANOHETEROSTRUCTURES; HETEROSTRUCTURES; SEMICONDUCTORS;
   NANOPARTICLES
AB We report scalable controlled synthesis of CdSe tetrapods with high morphological uniformity based on the continuous precursor injection (CPI) approach with halide ligands. The CPI approach involves the successive injection of precursors into the seed solution at a controlled rate so that the reaction condition remains in the kinetic growth regime. To initiage the successful development of tetrapod structure, the controlled amount of halide ligands are added during the reaction, which triggered the formation of wurtzide arms on {111}-facets of the zincblende seeds. The formation of the wurtzite phase is responsible for the halide-mediated displacement of oleate ligands, destabilizing the embryonic CdSe phase on the zincblende seeds enabling the phase transformation to more stable wurtzite phase on the hexagonal {111}-facets. On the basis of these halide-mediated phase transformation of CdSe nanocrystals and the persistent kinetic growth induced by the CPI approach, well-defined CdSe tetrapods with controlled arm length and diameter have been produced in large quantity.
C1 [Lim, Jaehoon; Char, Kookheon] Seoul Natl Univ, WCU Program Chem Convergence Energy & Environm, Natl Creat Res Initiat Ctr Intelligent Hybrids, Sch Chem & Biol Engn, Seoul 151744, South Korea.
   [Bae, Wan Ki] Los Alamos Natl Lab, Div Chem, Los Alamos, NM 87545 USA.
   [Park, Ko Un; Lee, Seonghoon] Seoul Natl Univ, Sch Chem, Seoul 151747, South Korea.
   [zur Borg, Lisa; Zentel, Rudolf] Johannes Gutenberg Univ Mainz, Inst Organ Chem, D-55099 Mainz, Germany.
RP Lee, S (reprint author), Seoul Natl Univ, Sch Chem, 1 Gwanak Ro, Seoul 151747, South Korea.
EM shnlee@snu.ac.kr; khchar@plaza.snu.ac.kr
RI Zentel, Rudolf/D-4542-2011
FU NRF; MEST; BK21Program; SNU Brain Fusion; MKE for renewable energy
   research; National Creative Research Initiative Center for Intelligent
   Hybrids [20100018290]; WCU Program [R31-10013]; Technology Development
   Program to Solve Climate Changes [NRF-2009-C1AAA001-2009-0093282];
   Leading Foreign Research Institute Recruitment Program [2011-0030065];
   IRTG: Self Organized Materials for Optoelectronics; DFG (Germany); NRF
   (Korea)
FX This work was financially supported by NRF funded by MEST and the
   BK21Program. Also supported by SNU Brain Fusion, MKE for renewable
   energy research, the National Creative Research Initiative Center for
   Intelligent Hybrids (No. 20100018290), the WCU Program of C2E2
   (R31-10013), and Technology Development Program to Solve Climate Changes
   (No. NRF-2009-C1AAA001-2009-0093282). This work was also in part
   supported by Leading Foreign Research Institute Recruitment Program
   (2011-0030065) and the IRTG: Self Organized Materials for
   Optoelectronics, jointly supported by the DFG (Germany) and NRF (Korea).
NR 33
TC 23
Z9 23
U1 4
U2 47
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0897-4756
J9 CHEM MATER
JI Chem. Mat.
PD APR 23
PY 2013
VL 25
IS 8
BP 1443
EP 1449
DI 10.1021/cm3035592
PG 7
WC Chemistry, Physical; Materials Science, Multidisciplinary
SC Chemistry; Materials Science
GA 133NB
UT WOS:000318144000030
ER

PT J
AU Lou, N
   Wang, YY
   Li, XP
   Li, HX
   Wang, P
   Wesdemiotis, C
   Sokolov, AP
   Xiong, HM
AF Lou, Nan
   Wang, Yangyang
   Li, Xiaopeng
   Li, Haixia
   Wang, Ping
   Wesdemiotis, Chrys
   Sokolov, Alexei P.
   Xiong, Huiming
TI Dielectric Relaxation and Rheological Behavior of Supramolecular
   Polymeric Liquid
SO MACROMOLECULES
LA English
DT Article
ID TRANSIENT NETWORK THEORY; MASS-SPECTROMETRY; ASSOCIATING POLYMERS;
   CLUSTER FORMATION; LIVING POLYMERS; CHAIN DYNAMICS; HYDROGEN-BONDS;
   TEMPERATURE; VISCOSITY; BREAKDOWN
AB A model self-complementary supramolecular polymer based on thymine and diamidopyridine triple hydrogen-bonding motifs has been synthesized, and its dielectric and theological behavior has been investigated. The formation of supramolecular polymers has been unequivocally demonstrated by nuclear magnetic resonance, electrospray ionization mass spectrometry with traveling wave ion mobility separation, dielectric spectroscopy, and theology. The dynamical behaviors of this associating polymer generally conform to those of type-A polymers, with a low-frequency chain relaxation and a high-frequency alpha relaxation visible in both rheological and dielectric measurements. The dielectric chain relaxation shows the ideal symmetric Debye-like shape, resembling the peculiar features of hydrogen-bonding monoalcohols. Detailed analysis shows that there exists a weak decoupling between the mechanical terminal relaxation and dielectric Debye-like relaxation. The origin of the Debye-like dielectric relaxation is further discussed in the light of monoalcohols.
C1 [Lou, Nan; Li, Haixia; Xiong, Huiming] Shanghai Jiao Tong Univ, Dept Polymer Sci, Shanghai 200240, Peoples R China.
   [Wang, Yangyang; Sokolov, Alexei P.] Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN 37831 USA.
   [Li, Xiaopeng; Wesdemiotis, Chrys] Univ Akron, Dept Chem & Polymer Sci, Akron, OH 44325 USA.
   [Li, Xiaopeng] SW Texas State Univ, Dept Chem & Biochem, San Marcos, TX 78666 USA.
   [Wang, Ping] Dow Chem Co Ltd, Shanghai 201203, Peoples R China.
RP Xiong, HM (reprint author), Shanghai Jiao Tong Univ, Dept Polymer Sci, Shanghai 200240, Peoples R China.
EM hmxiong@sjtu.edu.cn
RI Wang, Yangyang/A-5925-2010
OI Wang, Yangyang/0000-0001-7042-9804
FU National Natural Science Foundation of China [21074070]; National Basic
   Research Program [2011CB606005]; Shanghai Pujiang Program [10PJ1405400];
   Research Fund for the Doctoral Program of Higher Education
   [20100073110027]; U.S. Department of Energy, Office of Basic Energy
   Sciences, Division of Materials Sciences and Engineering
FX X.H.M. acknowledges Dr. M. Nakanishi for helpful discussions and the
   support from the National Natural Science Foundation of China (No.
   21074070), the National Basic Research Program (2011CB606005), Shanghai
   Pujiang Program (10PJ1405400), and Research Fund for the Doctoral
   Program of Higher Education (20100073110027). A.P.S. acknowledges
   support by the U.S. Department of Energy, Office of Basic Energy
   Sciences, Division of Materials Sciences and Engineering.
NR 70
TC 25
Z9 25
U1 6
U2 58
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0024-9297
EI 1520-5835
J9 MACROMOLECULES
JI Macromolecules
PD APR 23
PY 2013
VL 46
IS 8
BP 3160
EP 3166
DI 10.1021/ma400088w
PG 7
WC Polymer Science
SC Polymer Science
GA 133MW
UT WOS:000318143500030
ER

PT J
AU Liu, BX
   Narayanan, S
   Wu, DT
   Foster, MD
AF Liu, Boxi
   Narayanan, Suresh
   Wu, David T.
   Foster, Mark D.
TI Polymer Film Surface Fluctuation Dynamics in the Limit of Very Dense
   Branching
SO MACROMOLECULES
LA English
DT Article
ID MELTS; POLYSTYRENE; RHEOLOGY; TENSION; POLY(MACROMONOMER)S;
   TEMPERATURES; RELAXATION; DEPENDENCE; MOBILITY; COMBS
AB The surface fluctuation dynamics of melt films of densely branched comb polystyrene of thickness greater than 55 nm and at temperatures 23-58 degrees C above the bulk T-g can be rationalized using the hydrodynamic continuum theory (HCT) known to describe melts of unentangled linear and cyclic chains. Film viscosities (eta(XPCS)) inferred from fits of the HCT to X-ray photon correlation spectroscopy (XPCS) data are the same as those measured in hulk rheometry (eta(bulk)) for three combs. For the comb most like a star polymer and the comb closest to showing bulk entanglement behavior, eta(XPCS) > eta(bulk). These discrepancies are much smaller than those seen for less densely branched polystyrenes. We conjecture that the smaller magnitude of eta(XPCS) - eta(bulk) for the densely grafted combs is due to a lack of interpenetration of the side chains when branching is most dense. Both T-g,T-bulk and the specific chain architecture play key roles in determining the surface fluctuations.
C1 [Liu, Boxi; Foster, Mark D.] Univ Akron, Dept Polymer Sci, Akron, OH 44325 USA.
   [Narayanan, Suresh] Argonne Natl Lab, Xray Sci Div, Argonne, IL 60439 USA.
   [Wu, David T.] Colorado Sch Mines, Dept Chem Engn, Golden, CO 80401 USA.
   [Wu, David T.] Colorado Sch Mines, Dept Chem, Golden, CO 80401 USA.
RP Foster, MD (reprint author), Univ Akron, Dept Polymer Sci, Akron, OH 44325 USA.
EM mfoster@uakron.edu
FU National Science Foundation [CBET-0730692, CBET-0731319]; DOE's Office
   of Science [DE-AC02-06-CH11357]; DURIP program [W911NF-09-1-0122]
FX We thank Dr. Roderic P. Quirk for assistance in synthesis of the comb
   polymers and Dr. Chrys Wesdemiotis and Aleer M. Yol for MALDI molecular
   characterization. This material is based upon work supported by the
   National Science Foundation under Grants CBET-0730692 and CBET-0731319.
   Use of the Advanced Photon Source at Argonne National Laboratory was
   supported by the DOE's Office of Science under Contract
   DE-AC02-06-CH11357. X-ray instrumentation in the Foster lab was
   supported by the DURIP program under Contract W911NF-09-1-0122.
NR 33
TC 8
Z9 8
U1 0
U2 54
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0024-9297
J9 MACROMOLECULES
JI Macromolecules
PD APR 23
PY 2013
VL 46
IS 8
BP 3190
EP 3197
DI 10.1021/ma3022986
PG 8
WC Polymer Science
SC Polymer Science
GA 133MW
UT WOS:000318143500034
ER

PT J
AU Airapetian, A
   Akopov, N
   Akopov, Z
   Aschenauer, EC
   Augustyniak, W
   Avakian, R
   Avetissian, A
   Avetisyan, E
   Belostotski, S
   Blok, HP
   Borissov, A
   Bowles, J
   Brodski, I
   Bryzgalov, V
   Burns, J
   Capiluppi, M
   Capitani, GP
   Cisbani, E
   Ciullo, G
   Contalbrigo, M
   Dalpiaz, PF
   Deconinck, W
   De Leo, R
   De Nardo, L
   De Sanctis, E
   Diefenthaler, M
   Di Nezza, P
   Duren, M
   Ehrenfried, M
   Elbakian, G
   Ellinghaus, F
   Fabbri, R
   Fantoni, A
   Felawka, L
   Frullani, S
   Gabbert, D
   Gapienko, G
   Gapienko, V
   Garibaldi, F
   Gavrilov, G
   Gharibyan, V
   Giordano, F
   Gliske, S
   Golembiovskaya, M
   Hadjidakis, C
   Hartig, M
   Hasch, D
   Hillenbrand, A
   Hoek, M
   Holler, Y
   Hristova, I
   Imazu, Y
   Ivanilov, A
   Izotov, A
   Jackson, HE
   Jo, HS
   Joosten, S
   Kaiser, R
   Karyan, G
   Keri, T
   Kinney, E
   Kisselev, A
   Kobayashi, N
   Korotkov, V
   Kozlov, V
   Kravchenko, P
   Krivokhijine, VG
   Lagamba, L
   Lapikas, L
   Lehmann, I
   Lenisa, P
   Ruiz, AL
   Lorenzon, W
   Ma, BQ
   Mahon, D
   Maiheu, B
   Makins, NCR
   Manaenkov, SI
   Manfre, L
   Mao, Y
   Marianski, B
   de la Ossa, AM
   Marukyan, H
   Miller, CA
   Miyachi, Y
   Movsisyan, A
   Murray, M
   Mussgiller, A
   Nappi, E
   Naryshkin, Y
   Nass, A
   Negodaev, M
   Nowak, WD
   Pappalardo, LL
   Perez-Benito, R
   Petrosyan, A
   Raithel, M
   Reimer, PE
   Reolon, AR
   Riedl, C
   Rith, K
   Rosner, G
   Rostomyan, A
   Rubin, J
   Ryckbosch, D
   Salomatin, Y
   Sanftl, F
   Schafer, A
   Schnell, G
   Seitz, B
   Shibata, TA
   Shutov, V
   Stancari, M
   Statera, M
   Steffens, E
   Steijger, JJM
   Stewart, J
   Stinzing, F
   Taroian, S
   Terkulov, A
   Truty, R
   Trzcinski, A
   Tytgat, M
   Van Haarlem, Y
   Van Hulse, C
   Veretennikov, D
   Vilardi, I
   Vogel, C
   Wang, S
   Yaschenko, S
   Ye, Z
   Yen, S
   Yu, W
   Zagrebelnyy, V
   Zeiler, D
   Zihlmann, B
   Zupranski, P
AF Airapetian, A.
   Akopov, N.
   Akopov, Z.
   Aschenauer, E. C.
   Augustyniak, W.
   Avakian, R.
   Avetissian, A.
   Avetisyan, E.
   Belostotski, S.
   Blok, H. P.
   Borissov, A.
   Bowles, J.
   Brodski, I.
   Bryzgalov, V.
   Burns, J.
   Capiluppi, M.
   Capitani, G. P.
   Cisbani, E.
   Ciullo, G.
   Contalbrigo, M.
   Dalpiaz, P. F.
   Deconinck, W.
   De Leo, R.
   De Nardo, L.
   De Sanctis, E.
   Diefenthaler, M.
   Di Nezza, P.
   Dueren, M.
   Ehrenfried, M.
   Elbakian, G.
   Ellinghaus, F.
   Fabbri, R.
   Fantoni, A.
   Felawka, L.
   Frullani, S.
   Gabbert, D.
   Gapienko, G.
   Gapienko, V.
   Garibaldi, F.
   Gavrilov, G.
   Gharibyan, V.
   Giordano, F.
   Gliske, S.
   Golembiovskaya, M.
   Hadjidakis, C.
   Hartig, M.
   Hasch, D.
   Hillenbrand, A.
   Hoek, M.
   Holler, Y.
   Hristova, I.
   Imazu, Y.
   Ivanilov, A.
   Izotov, A.
   Jackson, H. E.
   Jo, H. S.
   Joosten, S.
   Kaiser, R.
   Karyan, G.
   Keri, T.
   Kinney, E.
   Kisselev, A.
   Kobayashi, N.
   Korotkov, V.
   Kozlov, V.
   Kravchenko, P.
   Krivokhijine, V. G.
   Lagamba, L.
   Lapikas, L.
   Lehmann, I.
   Lenisa, P.
   Ruiz, A. Lopez
   Lorenzon, W.
   Ma, B. -Q.
   Mahon, D.
   Maiheu, B.
   Makins, N. C. R.
   Manaenkov, S. I.
   Manfre, L.
   Mao, Y.
   Marianski, B.
   de la Ossa, A. Martinez
   Marukyan, H.
   Miller, C. A.
   Miyachi, Y.
   Movsisyan, A.
   Murray, M.
   Mussgiller, A.
   Nappi, E.
   Naryshkin, Y.
   Nass, A.
   Negodaev, M.
   Nowak, W. -D.
   Pappalardo, L. L.
   Perez-Benito, R.
   Petrosyan, A.
   Raithel, M.
   Reimer, P. E.
   Reolon, A. R.
   Riedl, C.
   Rith, K.
   Rosner, G.
   Rostomyan, A.
   Rubin, J.
   Ryckbosch, D.
   Salomatin, Y.
   Sanftl, F.
   Schaefer, A.
   Schnell, G.
   Seitz, B.
   Shibata, T. -A.
   Shutov, V.
   Stancari, M.
   Statera, M.
   Steffens, E.
   Steijger, J. J. M.
   Stewart, J.
   Stinzing, F.
   Taroian, S.
   Terkulov, A.
   Truty, R.
   Trzcinski, A.
   Tytgat, M.
   Van Haarlem, Y.
   Van Hulse, C.
   Veretennikov, D.
   Vilardi, I.
   Vogel, C.
   Wang, S.
   Yaschenko, S.
   Ye, Z.
   Yen, S.
   Yu, W.
   Zagrebelnyy, V.
   Zeiler, D.
   Zihlmann, B.
   Zupranski, P.
CA HERMES Collaboration
TI Multiplicities of charged pions and kaons from semi-inclusive
   deep-inelastic scattering by the proton and the deuteron
SO PHYSICAL REVIEW D
LA English
DT Article
ID FRAGMENTATION FUNCTIONS; AZIMUTHAL DEPENDENCE; CROSS-SECTIONS; PARTON
   MODEL; MONTE-CARLO; HERMES; ELECTROPRODUCTION; LEPTOPRODUCTION;
   FACTORIZATION; CHAMBERS
AB Multiplicities in semi-inclusive deep-inelastic scattering are presented for each charge state of pi(+/-) and K-+/- mesons. The data were collected by the HERMES experiment at the HERA storage ring using 27.6 GeV electron and positron beams incident on a hydrogen or deuterium gas target. The results are presented as a function of the kinematic quantities x(B), Q(2), z, and P-h perpendicular to. They represent a unique data set for identified hadrons that will significantly enhance our understanding of the fragmentation of quarks into final-state hadrons in deep-inelastic scattering. DOI: 10.1103/PhysRevD.87.074029
C1 [Jackson, H. E.; Reimer, P. E.; Rubin, J.] Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA.
   [De Leo, R.; Lagamba, L.; Nappi, E.; Vilardi, I.] Ist Nazl Fis Nucl, Sez Bari, I-70124 Bari, Italy.
   [Ma, B. -Q.; Mao, Y.; Wang, S.] Peking Univ, Sch Phys, Beijing 100871, Peoples R China.
   [Schnell, G.; Van Hulse, C.] Univ Basque Country UPV EHU, Dept Theoret Phys, Bilbao 48080, Spain.
   [Schnell, G.; Van Hulse, C.] Basque Fdn Sci, IKERBASQUE, Bilbao 48011, Spain.
   [Ellinghaus, F.; Kinney, E.; de la Ossa, A. Martinez] Univ Colorado, Nucl Phys Lab, Boulder, CO 80309 USA.
   [Akopov, Z.; Avetisyan, E.; Borissov, A.; Deconinck, W.; De Nardo, L.; Gavrilov, G.; Hartig, M.; Holler, Y.; de la Ossa, A. Martinez; Mussgiller, A.; Rostomyan, A.; Ye, Z.; Zagrebelnyy, V.; Zihlmann, B.] DESY, D-22603 Hamburg, Germany.
   [Aschenauer, E. C.; Fabbri, R.; Gabbert, D.; Golembiovskaya, M.; Hillenbrand, A.; Hristova, I.; Negodaev, M.; Nowak, W. -D.; Riedl, C.; Stewart, J.; Yaschenko, S.] DESY, D-15738 Zeuthen, Germany.
   [Krivokhijine, V. G.; Shutov, V.] Joint Inst Nucl Res, Dubna 141980, Russia.
   [Diefenthaler, M.; Kravchenko, P.; Mussgiller, A.; Nass, A.; Raithel, M.; Rith, K.; Steffens, E.; Stinzing, F.; Vogel, C.; Yaschenko, S.; Zeiler, D.] Univ Erlangen Nurnberg, Inst Phys, D-91058 Erlangen, Germany.
   [Capiluppi, M.; Ciullo, G.; Contalbrigo, M.; Dalpiaz, P. F.; Giordano, F.; Lenisa, P.; Pappalardo, L. L.; Stancari, M.; Statera, M.] Ist Nazl Fis Nucl, Sez Ferrara, I-44100 Ferrara, Italy.
   [Capiluppi, M.; Ciullo, G.; Contalbrigo, M.; Dalpiaz, P. F.; Giordano, F.; Lenisa, P.; Pappalardo, L. L.; Stancari, M.; Statera, M.] Univ Ferrara, Dipartimento Fis, I-44100 Ferrara, Italy.
   [Capitani, G. P.; De Sanctis, E.; Di Nezza, P.; Fantoni, A.; Hadjidakis, C.; Hasch, D.; Reolon, A. R.] Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy.
   [De Nardo, L.; Jo, H. S.; Joosten, S.; Ruiz, A. Lopez; Maiheu, B.; Ryckbosch, D.; Schnell, G.; Tytgat, M.; Van Haarlem, Y.; Van Hulse, C.] Univ Ghent, Dept Phys & Astron, B-9000 Ghent, Belgium.
   [Airapetian, A.; Brodski, I.; Dueren, M.; Ehrenfried, M.; Keri, T.; Perez-Benito, R.; Yu, W.; Zagrebelnyy, V.] Univ Giessen, Inst Phys 2, D-35392 Giessen, Germany.
   [Bowles, J.; Burns, J.; Hoek, M.; Kaiser, R.; Keri, T.; Lehmann, I.; Mahon, D.; Murray, M.; Rosner, G.; Seitz, B.] Univ Glasgow, Sch Phys & Astron, SUPA, Glasgow G12 8QQ, Lanark, Scotland.
   [Diefenthaler, M.; Giordano, F.; Joosten, S.; Makins, N. C. R.; Rubin, J.; Truty, R.] Univ Illinois, Dept Phys, Urbana, IL 61801 USA.
   [Airapetian, A.; Gliske, S.; Lorenzon, W.] Univ Michigan, Randall Lab Phys, Ann Arbor, MI 48109 USA.
   [Kozlov, V.; Terkulov, A.] PN Lebedev Phys Inst, Moscow 117924, Russia.
   [Blok, H. P.; Lapikas, L.; Steijger, J. J. M.] Natl Inst Subat Phys Nikhef, NL-1009 DB Amsterdam, Netherlands.
   [Belostotski, S.; Gavrilov, G.; Izotov, A.; Kisselev, A.; Kravchenko, P.; Manaenkov, S. I.; Naryshkin, Y.; Veretennikov, D.] BP Konstantinov Petersburg Nucl Phys Inst, Gatchina 188300, Leningrad Regio, Russia.
   [Bryzgalov, V.; Gapienko, G.; Gapienko, V.; Ivanilov, A.; Korotkov, V.; Salomatin, Y.] Inst High Energy Phys, Protvino 142281, Moscow Region, Russia.
   [Schaefer, A.] Univ Regensburg, Inst Theoret Phys, D-93040 Regensburg, Germany.
   [Cisbani, E.; Frullani, S.; Garibaldi, F.; Manfre, L.] Ist Nazl Fis Nucl, Sez Roma, Grp Collegato Sanita, I-00161 Rome, Italy.
   [Cisbani, E.; Frullani, S.; Garibaldi, F.; Manfre, L.] Ist Super Sanita, I-00161 Rome, Italy.
   [Felawka, L.; Gavrilov, G.; Miller, C. A.; Yen, S.] TRIUMF, Vancouver, BC V6T 2A3, Canada.
   [Imazu, Y.; Kobayashi, N.; Miyachi, Y.; Sanftl, F.; Shibata, T. -A.] Tokyo Inst Technol, Dept Phys, Tokyo 152, Japan.
   [Blok, H. P.] Vrije Univ Amsterdam, Dept Phys & Astron, NL-1081 HV Amsterdam, Netherlands.
   [Augustyniak, W.; Marianski, B.; Trzcinski, A.; Zupranski, P.] Natl Ctr Nucl Res, PL-00689 Warsaw, Poland.
   [Akopov, N.; Avakian, R.; Avetissian, A.; Elbakian, G.; Gharibyan, V.; Karyan, G.; Marukyan, H.; Movsisyan, A.; Petrosyan, A.; Taroian, S.] Yerevan Phys Inst, Yerevan 375036, Armenia.
RP Airapetian, A (reprint author), Univ Giessen, Inst Phys 2, D-35392 Giessen, Germany.
RI Negodaev, Mikhail/A-7026-2014; Taroian, Sarkis/E-1668-2014; Kozlov,
   Valentin/M-8000-2015; Terkulov, Adel/M-8581-2015; Cisbani,
   Evaristo/C-9249-2011; 
OI Cisbani, Evaristo/0000-0002-6774-8473; Lagamba,
   Luigi/0000-0002-0233-9812; Deconinck, Wouter/0000-0003-4033-6716; Nass,
   Alexander/0000-0003-2929-9109
FU Ministry of Economy; Ministry of Education and Science of Armenia;
   FWO-Flanders; IWT, Belgium; Natural Sciences and Engineering Research
   Council of Canada; National Natural Science Foundation of China;
   Alexander von Humboldt Stiftung; German Bundesministerium fur Bildung
   und Forschung (BMBF); Deutsche Forschungsgemeinschaft (DFG); Italian
   Istituto Nazionale di Fisica Nucleare (INFN); MEXT; JSPS; G-COE of
   Japan; Dutch Foundation for Fundamenteel Onderzoek der Materie (FOM);
   Russian Academy of Science; Russian Federal Agency for Science and
   Innovations; Basque Foundation for Science (IKERBASQUE); UPV/EHU [UFI
   11/55]; U.K. Engineering and Physical Sciences Research Council; Science
   and Technology Facilities Council; Scottish Universities Physics
   Alliance; U.S. Department of Energy (DOE); National Science Foundation
   (NSF); European Community [227431]
FX We gratefully acknowledge the DESY management for its support and the
   staff at DESY and the collaborating institutions for their significant
   effort. This work was supported by the Ministry of Economy and the
   Ministry of Education and Science of Armenia; the FWO-Flanders and IWT,
   Belgium; the Natural Sciences and Engineering Research Council of
   Canada; the National Natural Science Foundation of China; the Alexander
   von Humboldt Stiftung, the German Bundesministerium fur Bildung und
   Forschung (BMBF), and the Deutsche Forschungsgemeinschaft (DFG); the
   Italian Istituto Nazionale di Fisica Nucleare (INFN); the MEXT, JSPS,
   and G-COE of Japan; the Dutch Foundation for Fundamenteel Onderzoek der
   Materie (FOM); the Russian Academy of Science and the Russian Federal
   Agency for Science and Innovations; the Basque Foundation for Science
   (IKERBASQUE) and the UPV/EHU under program UFI 11/55; the U.K.
   Engineering and Physical Sciences Research Council, the Science and
   Technology Facilities Council, and the Scottish Universities Physics
   Alliance; the U.S. Department of Energy (DOE) and the National Science
   Foundation (NSF); as well as the European Community Research
   Infrastructure Integrating Activity under the FP7 "Study of strongly
   interacting matter (HadronPhysics2, Grant Agreement No. 227431)."
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J9 PHYS REV D
JI Phys. Rev. D
PD APR 23
PY 2013
VL 87
IS 7
AR 074029
DI 10.1103/PhysRevD.87.074029
PG 14
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 130KA
UT WOS:000317912600014
ER

PT J
AU Bazavov, A
   Bernard, C
   Bouchard, CM
   DeTar, C
   Du, DP
   El-Khadra, AX
   Foley, J
   Freeland, ED
   Gamiz, E
   Gottlieb, S
   Heller, UM
   Kim, J
   Kronfeld, AS
   Laiho, J
   Levkova, L
   Mackenzie, PB
   Neil, ET
   Oktay, MB
   Qiu, SW
   Simone, JN
   Sugar, R
   Toussaint, D
   Van de Water, RS
   Zhou, R
AF Bazavov, A.
   Bernard, C.
   Bouchard, C. M.
   DeTar, C.
   Du, Daping
   El-Khadra, A. X.
   Foley, J.
   Freeland, E. D.
   Gamiz, E.
   Gottlieb, Steven
   Heller, U. M.
   Kim, Jongjeong
   Kronfeld, A. S.
   Laiho, J.
   Levkova, L.
   Mackenzie, P. B.
   Neil, E. T.
   Oktay, M. B.
   Qiu, Si-Wei
   Simone, J. N.
   Sugar, R.
   Toussaint, D.
   Van de Water, R. S.
   Zhou, Ran
CA Fermilab Lattice Collaboration
   MILC Collaboration
TI Kaon semileptonic vector form factor and determination of vertical bar
   V-us vertical bar using staggered fermions
SO PHYSICAL REVIEW D
LA English
DT Article
ID CHIRAL PERTURBATION-THEORY; STANDARD MODEL; DECAYS; LATTICE; QUARKS;
   SIMULATIONS; CONSTANTS; THEOREM; SCALAR; MASS
AB Using staggered fermions and partially twisted boundary conditions, we calculate the K meson semileptonic decay vector form factor at zero momentum transfer. The highly improved staggered quark formulation is used for the valence quarks, while the sea quarks are simulated with the asqtad action (MILC Collaboration N-f = 2 + 1 configurations). For the chiral and continuum extrapolation, we use two-loop continuum chi PT, supplemented by partially quenched staggered chi PT at one loop. Our result is f(+)(K pi)(0) = 0.9667 +/- 0.0023 +/- 0.0033, where the first error is statistical and the second is the sum in quadrature of the systematic uncertainties. This result is the first N-f = 2 + 1 calculation with two lattice spacings and a controlled continuum extrapolation. It is also the most precise result to date for the vector form factor, and, although the central value is larger than previous unquenched lattice calculations, it is compatible with them within errors. Combining our value for f(+)(K pi)(0) with the latest experimental measurements of K semileptonic decays, we obtain vertical bar V-us vertical bar = 0.2238 +/- 0.0009 +/- 0.0005, where the first error is from f(+)(K pi)(0) and the second one is experimental. As a byproduct of our calculation, we obtain the combination of low-energy constants (C-12(r) + C-34(r) + (L-5(r))(2))(M-rho) = (3.62 +/- 1.00) x 10(-6). DOI: 10.1103/PhysRevD.87.073012
C1 [Bazavov, A.] Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA.
   [Bernard, C.] Washington Univ, Dept Phys, St Louis, MO 63130 USA.
   [Bouchard, C. M.] Ohio State Univ, Dept Phys, Columbus, OH 43210 USA.
   [DeTar, C.; Foley, J.; Levkova, L.; Oktay, M. B.; Qiu, Si-Wei] Univ Utah, Dept Phys, Salt Lake City, UT 84112 USA.
   [Du, Daping; El-Khadra, A. X.] Univ Illinois, Dept Phys, Urbana, IL 61801 USA.
   [Freeland, E. D.] Benedictine Univ, Dept Phys, Lisle, IL USA.
   [Gamiz, E.] Univ Granada, CAFPE, Granada, Spain.
   [Gamiz, E.] Univ Granada, Dept Fis Teor & Cosmos, Granada, Spain.
   [Gottlieb, Steven; Zhou, Ran] Indiana Univ, Dept Phys, Bloomington, IN 47405 USA.
   [Heller, U. M.] Amer Phys Soc, Ridge, NY USA.
   [Kim, Jongjeong; Toussaint, D.] Univ Arizona, Dept Phys, Tucson, AZ 85721 USA.
   [Kronfeld, A. S.; Mackenzie, P. B.; Neil, E. T.; Simone, J. N.; Van de Water, R. S.] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA.
   [Laiho, J.] Univ Glasgow, SUPA, Sch Phys & Astron, Glasgow, Lanark, Scotland.
   [Sugar, R.] Univ Calif Santa Barbara, Dept Phys, Santa Barbara, CA 93106 USA.
RP Bazavov, A (reprint author), Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA.
EM megamiz@ugr.es
RI zhou, ran/O-6309-2014; Gamiz, Elvira/E-8009-2016; Bouchard,
   Christopher/N-3723-2016; 
OI zhou, ran/0000-0002-0640-1820; Gamiz, Elvira/0000-0001-5125-2687;
   Bouchard, Christopher/0000-0003-1639-7164; Simone,
   James/0000-0001-8515-3337
FU Office of Science of the United States Department of Energy; National
   Science Foundation's Teragrid/XSEDE Program; U.S. Department of Energy
   [DE-FG02-91ER40628, DOE FG02-91ER40664, DE-FC02-06ER41446,
   DE-FG02-91ER40661, DE-FG02-91ER40677, DE-FG02-04ER-41298,
   DE-AC02-98CH10886, DE-AC02-07CH11359]; National Science Foundation
   [PHY-1067881, PHY-0757333, PHY-0703296, PHY-0757035]; Science and
   Technology Facilities Council; Scottish Universities Physics Alliance;
   Ramon y Cajal program; Junta de Andalucia (Spain) [FQM-101, FQM-330,
   FQM-6552]; European Commission (EC) [PCIG10-GA-2011-303781]; MICINN
   (Spain) [FPA2010-16696]
FX We thank Jon Bailey, Johan Bijnens, Christine Davies, Eduardo Follana,
   Pere Masjuan, and Heechang Na for useful discussions. We thank Johan
   Bijnens for making his NLO partially quenched chi PT and NNLO full QCD
   chi PT codes available to us. We thank Jon Bailey for the careful
   reading of this manuscript. Computations for this work were carried out
   with resources provided by the USQCD Collaboration, the Argonne
   Leadership Computing Facility, the National Energy Research Scientific
   Computing Center, and the Los Alamos National Laboratory, which are
   funded by the Office of Science of the United States Department of
   Energy, and with resources provided by the National Institute for
   Computational Science, the Pittsburgh Supercomputer Center, the San
   Diego Supercomputer Center, and the Texas Advanced Computing Center,
   which are funded through the National Science Foundation's
   Teragrid/XSEDE Program. This work was supported in part by the U.S.
   Department of Energy under Grants No. DE-FG02-91ER40628 (C. B.), No. DOE
   FG02-91ER40664 (Y. M.), No. DE-FC02-06ER41446 (C. D., J. F., L. L., M.
   B. O.), No. DE-FG02-91ER40661 (S. G., R. Z.), No. DE-FG02-91ER40677 (D.
   D., A. X. K.), and No. DE-FG02-04ER-41298 (J. K., D. T.); by the
   National Science Foundation under Grants No. PHY-1067881, No.
   PHY-0757333, No. PHY-0703296 (C. D., J. F., L. L., M. B. O.), and No.
   PHY-0757035 (R. S.); by the Science and Technology Facilities Council
   and the Scottish Universities Physics Alliance (J. L.); by the MICINN
   (Spain) under Grant No. FPA2010-16696 and the Ramon y Cajal program (E.
   G.); by the Junta de Andalucia (Spain) under Grants No. FQM-101, No.
   FQM-330, and No. FQM-6552 (E. G.); and by European Commission (EC) under
   Grant No. PCIG10-GA-2011-303781 (E. G.). This manuscript has been
   coauthored by employees of Brookhaven Science Associates, LLC, under
   Contract No. DE-AC02-98CH10886 with the U.S. Department of Energy.
   Fermilab is operated by Fermi Research Alliance, LLC, under Contract No.
   DE-AC02-07CH11359 with the U.S. Department of Energy.
NR 78
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PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1550-7998
J9 PHYS REV D
JI Phys. Rev. D
PD APR 23
PY 2013
VL 87
IS 7
AR 073012
DI 10.1103/PhysRevD.87.073012
PG 17
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 130KA
UT WOS:000317912600006
ER

PT J
AU Cherry, JF
   Carlson, J
   Friedland, A
   Fuller, GM
   Vlasenko, A
AF Cherry, John F.
   Carlson, J.
   Friedland, Alexander
   Fuller, George M.
   Vlasenko, Alexey
TI Halo modification of a supernova neutronization neutrino burst
SO PHYSICAL REVIEW D
LA English
DT Article
ID ELECTRON-CAPTURE SUPERNOVAE; COLLAPSE; CORE; SIMULATIONS; EVOLUTION;
   STARS
AB We give the first self-consistent calculation of the effect of the scattered neutrino halo on flavor evolution in supernovae. Our example case is an O-Ne-Mg core collapse supernova neutronization neutrino burst. We find that the addition of the halo neutrinos produces qualitative and quantitative changes in the final flavor states of neutrinos. We also find that the halo neutrinos produce a novel distortion of the neutrino flavor swap. Our results provide strong motivation for tackling the full multidimensional and composition-dependent aspects of this problem in the future. DOI: 10.1103/PhysRevD.87.085037
C1 [Cherry, John F.; Carlson, J.; Friedland, Alexander] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA.
   [Cherry, John F.] Univ New Mexico, Dept Phys & Astron, Albuquerque, NM 87131 USA.
   [Cherry, John F.; Fuller, George M.; Vlasenko, Alexey] Univ Calif San Diego, Dept Phys, La Jolla, CA 92093 USA.
   [Cherry, John F.; Carlson, J.; Friedland, Alexander; Fuller, George M.; Vlasenko, Alexey] New Mexico Consortium, Neutrino Engn Inst, Los Alamos, NM 87545 USA.
RP Cherry, JF (reprint author), Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA.
FU NSF at UCSD [PHY-09-70064]; DOE at UNM Albuquerque [DE-SC0008142]; DOE
   Office of Science; LDRD Program; LANL; UC office of the President
FX This work was supported in part by NSF Grant No. PHY-09-70064 at UCSD
   and DOE Award No. DE-SC0008142 at UNM Albuquerque, and by the DOE Office
   of Science, the LDRD Program, Open Supercomputing at LANL, and the UC
   office of the President. We would like to thank V. Cirigliano, H. Duan,
   Y.-Z. Qian, the Topical Collaboration for Neutrinos and Nucleosynthesis
   in Hot and Dense Matter at LANL, and the New Mexico Consortium.
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SN 1550-7998
J9 PHYS REV D
JI Phys. Rev. D
PD APR 23
PY 2013
VL 87
IS 8
AR 085037
DI 10.1103/PhysRevD.87.085037
PG 14
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 130KH
UT WOS:000317913400021
ER

PT J
AU Dong, JK
   Tokiwa, Y
   Bud'ko, SL
   Canfield, PC
   Gegenwart, P
AF Dong, J. K.
   Tokiwa, Y.
   Bud'ko, S. L.
   Canfield, P. C.
   Gegenwart, P.
TI Anomalous Reduction of the Lorenz Ratio at the Quantum Critical Point in
   YbAgGe
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID FERMI-LIQUID BEHAVIOR; PHASE-TRANSITIONS; HEAVY FERMIONS; METALS;
   SUPERCONDUCTIVITY
AB We report measurements of the electrical and thermal transport on the hexagonal heavy-fermion metal YbAgGe for temperatures T >= 40 mK and in magnetic fields H parallel to ab up to 14 T. This distorted kagome-lattice system displays a series of magnetic states and a quantum critical point at H-c = 4.5 T. The Lorenz ratio L(T)/L-0 displays a marked reduction only close to H-c. A T-linear contribution below 120 mK, present at all different fields, allows us to extrapolate the Lorenz ratio towards T = 0. At the critical field this yields L/L-0 = 0.92 +/- 0.03, suggesting a violation of the Wiedemann-Franz law due to strong inelastic scattering. DOI: 10.1103/PhysRevLett.110.176402
C1 [Dong, J. K.; Tokiwa, Y.; Gegenwart, P.] Univ Gottingen, Inst Phys 1, D-37077 Gottingen, Germany.
   [Bud'ko, S. L.; Canfield, P. C.] Iowa State Univ, Ames Lab, Ames, IA 50011 USA.
   [Bud'ko, S. L.; Canfield, P. C.] Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA.
RP Dong, JK (reprint author), Univ Gottingen, Inst Phys 1, D-37077 Gottingen, Germany.
RI Dong, Jinkui/J-3603-2013; Canfield, Paul/H-2698-2014; Tokiwa,
   Yoshifumi/P-6593-2015; Gegenwart, Philipp/A-7291-2017
OI Tokiwa, Yoshifumi/0000-0002-6294-7879; 
FU Alexander-von-Humboldt Foundation; German Science Foundation through
   research unit 960; U.S. Department of Energy, Office of Basic Energy
   Science, Division of Materials Sciences and Engineering; U.S. Department
   of Energy by Iowa State University [DE-AC02-07CH11358]
FX We thank M. A. Tanatar for critical reading and useful suggestions. J.
   K. D. acknowledges support from the Alexander-von-Humboldt Foundation.
   This work was supported by the German Science Foundation through
   research unit 960 (Quantum Phase Transitions). Work done at Ames
   Laboratory (P. C. C. and S. L. B.) was supported by the U.S. Department
   of Energy, Office of Basic Energy Science, Division of Materials
   Sciences and Engineering. The Ames Laboratory is operated for the U.S.
   Department of Energy by Iowa State University under Contract No.
   DE-AC02-07CH11358.
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SN 0031-9007
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD APR 23
PY 2013
VL 110
IS 17
AR 176402
DI 10.1103/PhysRevLett.110.176402
PG 5
WC Physics, Multidisciplinary
SC Physics
GA 130KT
UT WOS:000317915200019
PM 23679749
ER

PT J
AU Yan, HP
   Wang, C
   McCarn, AR
   Ade, H
AF Yan, Hongping
   Wang, Cheng
   McCarn, Allison R.
   Ade, Harald
TI Accurate and Facile Determination of the Index of Refraction of Organic
   Thin Films Near the Carbon 1s Absorption Edge
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID X-RAY REGION; ABSOLUTE PHOTOABSORPTION MEASUREMENTS; SPIN-COATED
   POLYSTYRENE; EXTREME-ULTRAVIOLET; OPTICAL-CONSTANTS; HOMOPOLYMER FILMS;
   ENERGY REGION; POLYMERS; INTERFEROMETER; SCATTERING
AB A practical and accurate method to obtain the index of refraction, especially the decrement delta, across the carbon 1s absorption edge is demonstrated. The combination of absorption spectra scaled to the Henke atomic scattering factor database, the use of the doubly subtractive Kramers-Kronig relations, and high precision specular reflectivity measurements from thin films allow the notoriously difficult-to-measure delta to be determined with high accuracy. No independent knowledge of the film thickness or density is required. High confidence interpolation between relatively sparse measurements of delta across an absorption edge is achieved. Accurate optical constants determined by this method are expected to greatly improve the simulation and interpretation of resonant soft x-ray scattering and reflectivity data. The method is demonstrated using poly(methyl methacrylate) and should be extendable to all organic materials. DOI: 10.1103/PhysRevLett.110.177401
C1 [Yan, Hongping; McCarn, Allison R.; Ade, Harald] N Carolina State Univ, Dept Phys, Raleigh, NC 27695 USA.
   [Wang, Cheng] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Adv Light Source, Berkeley, CA 94720 USA.
RP Yan, HP (reprint author), N Carolina State Univ, Dept Phys, Raleigh, NC 27695 USA.
RI Ade, Harald/E-7471-2011; YAN, HONGPING/N-7549-2013; Wang,
   Cheng/A-9815-2014
OI YAN, HONGPING/0000-0001-6235-4523; 
FU U.S. Department of Energy [DE-FG02-98ER45737]; Office of Science,
   Department of Energy [DE-AC02-05CH11231]
FX The authors are grateful for the supplying of PMMA samples by C. R.
   McNeill (Monash University, Australia) and the fruitful discussions with
   B. Watts (PSI, Switzerland), E. M. Gullikson (ALS 6.3.2, CXRO), and A.
   L. D. Kilcoyne (ALS 5.3.2.2). Work at NCSU is supported by the U.S.
   Department of Energy under Contract No. DE-FG02-98ER45737. Data were
   acquired at beam lines 5.3.2.2 and 6.3.2 at the ALS, which is supported
   by the Director of the Office of Science, Department of Energy, under
   Contract No. DE-AC02-05CH11231.
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PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
EI 1079-7114
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD APR 23
PY 2013
VL 110
IS 17
AR 177401
DI 10.1103/PhysRevLett.110.177401
PG 5
WC Physics, Multidisciplinary
SC Physics
GA 130KT
UT WOS:000317915200024
PM 23679772
ER

PT J
AU Sekhon, RS
   Briskine, R
   Hirsch, CN
   Myers, CL
   Springer, NM
   Buell, CR
   de Leon, N
   Kaeppler, SM
AF Sekhon, Rajandeep S.
   Briskine, Roman
   Hirsch, Candice N.
   Myers, Chad L.
   Springer, Nathan M.
   Buell, C. Robin
   de Leon, Natalia
   Kaeppler, Shawn M.
TI Maize Gene Atlas Developed by RNA Sequencing and Comparative Evaluation
   of Transcriptomes Based on RNA Sequencing and Microarrays
SO PLOS ONE
LA English
DT Article
ID ADP-GLUCOSE PYROPHOSPHORYLASE; GLYCINE-MAX; ZEA-MAYS; EXPRESSION; SEQ;
   LEAF; ENDOSPERM; GENOME; METHYLTRANSFERASE; DIFFERENTIATION
AB Transcriptome analysis is a valuable tool for identification and characterization of genes and pathways underlying plant growth and development. We previously published a microarray-based maize gene atlas from the analysis of 60 unique spatially and temporally separated tissues from 11 maize organs [1]. To enhance the coverage and resolution of the maize gene atlas, we have analyzed 18 selected tissues representing five organs using RNA sequencing (RNA-Seq). For a direct comparison of the two methodologies, the same RNA samples originally used for our microarray-based atlas were evaluated using RNA-Seq. Both technologies produced similar transcriptome profiles as evident from high Pearson's correlation statistics ranging from 0.70 to 0.83, and from nearly identical clustering of the tissues. RNA-Seq provided enhanced coverage of the transcriptome, with 82.1% of the filtered maize genes detected as expressed in at least one tissue by RNA-Seq compared to only 56.5% detected by microarrays. Further, from the set of 465 maize genes that have been historically well characterized by mutant analysis, 427 show significant expression in at least one tissue by RNA-Seq compared to 390 by microarray analysis. RNA-Seq provided higher resolution for identifying tissue-specific expression as well as for distinguishing the expression profiles of closely related paralogs as compared to microarray-derived profiles. Co-expression analysis derived from the microarray and RNA-Seq data revealed that broadly similar networks result from both platforms, and that co-expression estimates are stable even when constructed from mixed data including both RNA-Seq and microarray expression data. The RNA-Seq information provides a useful complement to the microarray-based maize gene atlas and helps to further understand the dynamics of transcription during maize development.
C1 [Sekhon, Rajandeep S.; de Leon, Natalia; Kaeppler, Shawn M.] Univ Wisconsin, Dept Agron, Madison, WI 53706 USA.
   [Sekhon, Rajandeep S.; de Leon, Natalia; Kaeppler, Shawn M.] Univ Wisconsin, Dept Energy, Great Lakes Bioenergy Res Ctr, Madison, WI 53706 USA.
   [Briskine, Roman; Myers, Chad L.] Univ Minnesota, Dept Comp Sci & Engn, Minneapolis, MN USA.
   [Hirsch, Candice N.; Buell, C. Robin] Michigan State Univ, Dept Plant Biol, E Lansing, MI 48824 USA.
   [Hirsch, Candice N.; Buell, C. Robin] Michigan State Univ, Dept Energy, Great Lakes Bioenergy Res Ctr, E Lansing, MI 48824 USA.
   [Springer, Nathan M.] Univ Minnesota, Dept Plant Biol, Microbial & Plant Genom Inst, St Paul, MN USA.
RP Kaeppler, SM (reprint author), Univ Wisconsin, Dept Agron, 1575 Linden Dr, Madison, WI 53706 USA.
EM smkaeppl@wisc.edu
RI Springer, Nathan/F-2680-2013; 
OI Springer, Nathan/0000-0002-7301-4759; Kaeppler,
   Shawn/0000-0002-5964-1668
FU Department of Energy Great Lakes Bioenergy Research Center (Department
   of Energy Biological and Environmental Research Office of Science)
   [DE-FC02-07ER64494]; National Science Foundation [DBI-0953881,
   IOS-1126950]
FX This work was supported by the Department of Energy Great Lakes
   Bioenergy Research Center (Department of Energy Biological and
   Environmental Research Office of Science grant no. DE-FC02-07ER64494).
   RB and CLM were partially supported by Grant DBI-0953881 and Grant
   IOS-1126950 from the National Science Foundation. The funders had no
   role in study design, data collection and analysis, decision to publish,
   or preparation of the manuscript.
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PI SAN FRANCISCO
PA 1160 BATTERY STREET, STE 100, SAN FRANCISCO, CA 94111 USA
SN 1932-6203
J9 PLOS ONE
JI PLoS One
PD APR 23
PY 2013
VL 8
IS 4
AR e61005
DI 10.1371/journal.pone.0061005
PG 11
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA 131QH
UT WOS:000318008400021
PM 23637782
ER

PT J
AU de Juan, F
   Manes, JL
   Vozmediano, MAH
AF de Juan, Fernando
   Manes, Juan L.
   Vozmediano, Maria A. H.
TI Gauge fields from strain in graphene
SO PHYSICAL REVIEW B
LA English
DT Article
ID ELECTRONIC-PROPERTIES; SUSPENDED GRAPHENE
AB We revise the tight-binding approach to strained or curved graphene in the presence of external probes such as photoemission or scanning tunneling microscopy experiments. We show that extra terms arise in the continuum limit of the tight-binding Hamiltonian which cannot be accounted for by changes in the hopping parameters due to lattice deformations, encoded in the parameter beta. These material-independent extra couplings are of the same order of magnitude as the standard ones and have a geometric origin. They include corrections to the position-dependent Fermi velocity and to a new vector field. We show that the new vector field does not couple to electrons like a standard gauge field and that no beta-independent pseudomagnetic fields exist in strained graphene. DOI: 10.1103/PhysRevB.87.165131
C1 [de Juan, Fernando] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94720 USA.
   [de Juan, Fernando] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
   [Manes, Juan L.] Univ Basque Country, Dept Fis Mat Condensada, E-48080 Bilbao, Spain.
   [Vozmediano, Maria A. H.] Inst Ciencia Mat, Madrid 28049, Spain.
   [Vozmediano, Maria A. H.] CSIC, E-28049 Madrid, Spain.
RP de Juan, F (reprint author), Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94720 USA.
RI de Juan, Fernando/B-9392-2008; Vozmediano, Maria/A-1391-2009
OI de Juan, Fernando/0000-0001-6852-1484; Vozmediano,
   Maria/0000-0003-2574-2310
FU Spanish MECD [FIS2008-00124, FIS2011-23713, PIB2010BZ-00512,
   FPA2009-10612]; Spanish Consolider-Ingenio 2010 Programme CPAN
   [CSD2007-00042]; Basque Government [IT559-10]; "Programa Nacional de
   Movilidad de Recursos Humanos" (Spanish MECD)
FX We specially thank M. Sturla for very useful conversations. Discussions
   with B. Amorim, A. Cortijo, D. Faria, A. G. Grushin, F. Guinea, H.
   Ochoa, A. Salas, and N. Sandler are also acknowledged. This research was
   supported in part by Spanish MECD Grants No. FIS2008-00124, No.
   FIS2011-23713, No. PIB2010BZ-00512, and No. FPA2009-10612, the Spanish
   Consolider-Ingenio 2010 Programme CPAN (CSD2007-00042), and Basque
   Government Grant No. IT559-10. F.d.J. acknowledges support from the
   "Programa Nacional de Movilidad de Recursos Humanos" (Spanish MECD).
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PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
EI 1550-235X
J9 PHYS REV B
JI Phys. Rev. B
PD APR 23
PY 2013
VL 87
IS 16
AR 165131
DI 10.1103/PhysRevB.87.165131
PG 6
WC Physics, Condensed Matter
SC Physics
GA 130JN
UT WOS:000317911000004
ER

PT J
AU Jeon, DO
AF Jeon, Dong-O
TI Evidence of a halo formation mechanism in the Spallation Neutron Source
   linac
SO PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS
LA English
DT Article
AB A new halo formation mechanism and its mitigation scheme [D. Jeon, J. Stovall, A. Aleksandrov, J. Wei, J. Staples, R. Keller, L. Young, H. Takeda, and S. Nath, Phys. Rev. ST Accel. Beams 5, 094201 (2002)] are verified experimentally through a series of emittance measurements performed during the drift tube linac tank 1 commissioning of the Spallation Neutron Source. This is a rare experiment evidence of a halo formation mechanism. As the simulation predicts, the emittance measurements clearly show a visible halo reduction as well as a significant rms emittance reduction when the proposed round beam optics is employed. The emittance measurement results are consistent with multiparticle simulations and also consistent with wire scanner results. These measurements serve as a valuable code benchmarking for a beam under an intense space charge effect. DOI: 10.1103/PhysRevSTAB.16.040103
C1 [Jeon, Dong-O] Oak Ridge Natl Lab, SNS, Oak Ridge, TN 37831 USA.
RP Jeon, DO (reprint author), Inst for Basic Sci Korea, Taejon, South Korea.
EM jeond@ibs.re.kr
RI Jeon, Dong-O/S-2137-2016
OI Jeon, Dong-O/0000-0001-6482-5878
FU U.S. Department of Energy [DE-AC05-00OR22725]; Ministry of Science; ICT
   and Future Planning; National Research Foundation of the Republic of
   Korea [2011-0032011]
FX SNS is managed by UT-Battelle, LLC, under Contract No. DE-AC05-00OR22725
   for the U.S. Department of Energy. Thanks also go to the Ministry of
   Science, ICT and Future Planning and the National Research Foundation of
   the Republic of Korea for their support under Contract No. 2011-0032011
   for the data analysis. Special thanks go to S. Assadi and W. Blokland
   for their efforts on the emittance devices and wire scanners.
NR 10
TC 7
Z9 7
U1 1
U2 3
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-4402
J9 PHYS REV SPEC TOP-AC
JI Phys. Rev. Spec. Top.-Accel. Beams
PD APR 23
PY 2013
VL 16
IS 4
AR 040103
DI 10.1103/PhysRevSTAB.16.040103
PG 6
WC Physics, Nuclear; Physics, Particles & Fields
SC Physics
GA 130KX
UT WOS:000317915600001
ER

PT J
AU Lund, SM
   Cohen, RH
   Ni, PA
AF Lund, Steven M.
   Cohen, Ronald H.
   Ni, Pavel A.
TI Envelope model for passive magnetic focusing of an intense proton or ion
   beam propagating through thin foils
SO PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS
LA English
DT Article
ID LASER; ELECTRON; ACCELERATION; TARGETS
AB Ion beams (including protons) with low emittance and high space-charge intensity can be propagated with normal incidence through a sequence of thin metallic foils separated by vacuum gaps of order the characteristic transverse beam extent to transport/collimate the beam or to focus it to a small transverse spot. Energetic ions have sufficient range to pass through a significant number of thin foils with little energy loss or scattering. The foils reduce the (defocusing) radial electric self-field of the beam while not altering the (focusing) azimuthal magnetic self-field of the beam, thereby allowing passive self-beam focusing if the magnetic field is sufficiently strong relative to the residual electric field. Here we present an envelope model developed to predict the strength of this passive (beam generated) focusing effect under a number of simplifying assumptions including relatively long pulse duration. The envelope model provides a simple criterion for the necessary foil spacing for net focusing and clearly illustrates system focusing properties for either beam collimation (such as injecting a laser-produced proton beam into an accelerator) or for magnetic pinch focusing to a small transverse spot (for beam driven heating of materials). An illustrative example is worked for an idealization of a recently performed laser-produced proton-beam experiment to provide guidance on possible beam focusing and collimation systems. It is found that foils spaced on the order of the characteristic transverse beam size desired can be employed and that envelope divergence of the initial beam entering the foil lens must be suppressed to limit the total number of foils required to practical values for pinch focusing. Relatively modest proton-beam current at 10 MeV kinetic energy can clearly demonstrate strong magnetic pinch focusing achieving a transverse rms extent similar to the foil spacing (20-50 mu m gaps) in beam propagation distances of tens of mm. This is a surprisingly optimistic result since placing many foils per characteristic beam radius, which one might expect to be necessary to strongly attenuate the self-electric field, would likely result in excessive scattering and loss of focusing from the current neutralization due to the beam propagating too far through solid metal. Results from the envelope model are compared with particle-in-cell simulations to help clarify limits related to envelope-model idealizations. Possible degradations of focusing in situations where strong halo can be generated and where pulse duration is short are clarified. DOI: 10.1103/PhysRevSTAB.16.044202
C1 [Lund, Steven M.; Cohen, Ronald H.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
   [Ni, Pavel A.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
RP Lund, SM (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
EM smlund@llnl.gov; rcohen@llnl.gov; pani@lbl.gov
FU U.S. Department of Energy at the Lawrence Livermore and Lawrence
   Berkeley National Laboratories [DE-AC52-07NA27344, DE-AC02-05CH11231]
FX The authors wish to thank B. G. Logan (LBNL) for suggesting the X-target
   application of thin-foil focusing which motivated this research, and J.
   Barnard (LLNL), F. Bieniosek (LBNL), A. Faltens (LBNL), A. Friedman
   (LLNL), M. Roth (TU-Darmstadt), and G. Schaumann (TU-Darmsdadt) for
   useful discussions. The WARP PIC simulations were supported by D. Grote
   (LLNL) and J.-L. Vay (LBNL). This research was performed under the
   auspices of the U.S. Department of Energy at the Lawrence Livermore and
   Lawrence Berkeley National Laboratories under Contracts No.
   DE-AC52-07NA27344 and No. DE-AC02-05CH11231.
NR 51
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U1 3
U2 8
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-4402
J9 PHYS REV SPEC TOP-AC
JI Phys. Rev. Spec. Top.-Accel. Beams
PD APR 23
PY 2013
VL 16
IS 4
AR 044202
DI 10.1103/PhysRevSTAB.16.044202
PG 29
WC Physics, Nuclear; Physics, Particles & Fields
SC Physics
GA 130KX
UT WOS:000317915600004
ER

PT J
AU Schwartz, C
   Amasino, R
AF Schwartz, Christopher
   Amasino, Richard
TI Nitrogen recycling and flowering time in perennial bioenergy crops
SO FRONTIERS IN PLANT SCIENCE
LA English
DT Review
DE nitrogen recycling; perennialism; switchgrass; flowering time; dormancy;
   bioenergy crops
ID MISCANTHUS X GIGANTEUS; SWITCHGRASS POPULATIONS; BIOMASS PRODUCTION;
   ENVIRONMENT INTERACTIONS; PHOTOPERIOD EXTENSION; LOWLAND SWITCHGRASS;
   ECOTYPIC VARIATION; GENETIC DIVERSITY; HARVEST FREQUENCY; PANICUM
   VIRGATUM
AB Perennials have a number of traits important for profitability and sustainability of a biofuel crop. Perennialism is generally defined as the ability to grow and reproduce in multiple years. In temperate climates, many perennial plants enter dormancy during winter and recycle nutrients, such as nitrogen, to below ground structures for the next growing season. Nitrogen is expensive to produce and application of nitrogen increases the potent greenhouse gas NO,. Perennial bioenergy crops have been evaluated for biomass yields with nitrogen fertilization, location, year, and genotype as variables. Flowering time and dormancy are closely related to the N recycling program. Substantial variation for flowering time and dormancy has been identified in the switchgrass (Panicum virgatum L.) species, which provides a source to identify the genetic components of N recycling, and for use in breeding programs. Some studies have addressed recycling specifically, but flowering time and developmental differences were largely ignored, complicating interpretation of the results. Future studies on recycling need to appreciate plant developmental stage to allow comparison between experiments. A perennial/annual model(s) and more environmentally controlled experiments would be useful to determine the genetic components of nitrogen recycling. Increasing biomass yield per unit of nitrogen by maximizing recycling might mean the difference for profitability of a biofuel crop and has the added benefit of minimizing negative environmental effects from agriculture.
C1 [Schwartz, Christopher; Amasino, Richard] Univ Wisconsin, Great Lakes Bioenergy Res Ctr, Madison, WI 53706 USA.
RP Amasino, R (reprint author), Univ Wisconsin, Dept Biochem, 433 Babcock Dr, Madison, WI 53706 USA.
EM amasino@biochem.wisc.edu
FU US Department of Energy Great Lakes Bioenergy Research Center
FX We would like to thank Laura Smith, Mike Caster, Randy Jackson, John
   Sedbrook, Tom Ream, and Daniel Woods for helpful discussions. This work
   was funded by the US Department of Energy Great Lakes Bioenergy Research
   Center (http://www.greatlakesbioenergy.org/).
NR 64
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U1 6
U2 35
PU FRONTIERS RESEARCH FOUNDATION
PI LAUSANNE
PA PO BOX 110, LAUSANNE, 1015, SWITZERLAND
SN 1664-462X
J9 FRONT PLANT SCI
JI Front. Plant Sci.
PD APR 22
PY 2013
VL 4
AR 00076
DI 10.3389/fpls.2013.00076
PG 7
WC Plant Sciences
SC Plant Sciences
GA 291CE
UT WOS:000329804500001
PM 23626592
ER

PT J
AU Podar, M
   Makarova, KS
   Graham, DE
   Wolf, YI
   Koonin, EV
   Reysenbach, AL
AF Podar, Mircea
   Makarova, Kira S.
   Graham, David E.
   Wolf, Yuri I.
   Koonin, Eugene V.
   Reysenbach, Anna-Louise
TI Insights into archaeal evolution and symbiosis from the genomes of a
   nanoarchaeon and its inferred crenarchaeal host from Obsidian Pool,
   Yellowstone National Park
SO BIOLOGY DIRECT
LA English
DT Article
DE Archaea evolution; Single cell genomics; Symbiosis; Hyperthermophiles;
   Split genes
ID 16S RIBOSOMAL-RNA; MULTIPLE SEQUENCE ALIGNMENT; DE-BRUIJN GRAPHS;
   IGNICOCCUS-HOSPITALIS; MAXIMUM-LIKELIHOOD; SPLICING ENDONUCLEASE; PHYLUM
   NANOARCHAEOTA; TRNASCAN-SE; ONE-CELL; SP-NOV
AB Background: A single cultured marine organism, Nanoarchaeum equitans, represents the Nanoarchaeota branch of symbiotic Archaea, with a highly reduced genome and unusual features such as multiple split genes.
   Results: The first terrestrial hyperthermophilic member of the Nanoarchaeota was collected from Obsidian Pool, a thermal feature in Yellowstone National Park, separated by single cell isolation, and sequenced together with its putative host, a Sulfolobales archaeon. Both the new Nanoarchaeota (Nst1) and N. equitans lack most biosynthetic capabilities, and phylogenetic analysis of ribosomal RNA and protein sequences indicates that the two form a deep-branching archaeal lineage. However, the Nst1 genome is more than 20% larger, and encodes a complete gluconeogenesis pathway as well as the full complement of archaeal flagellum proteins. With a larger genome, a smaller repertoire of split protein encoding genes and no split non-contiguous tRNAs, Nst1 appears to have experienced less severe genome reduction than N. equitans. These findings imply that, rather than representing ancestral characters, the extremely compact genomes and multiple split genes of Nanoarchaeota are derived characters associated with their symbiotic or parasitic lifestyle. The inferred host of Nst1 is potentially autotrophic, with a streamlined genome and simplified central and energetic metabolism as compared to other Sulfolobales.
   Conclusions: Comparison of the N. equitans and Nst1 genomes suggests that the marine and terrestrial lineages of Nanoarchaeota share a common ancestor that was already a symbiont of another archaeon. The two distinct Nanoarchaeota-host genomic data sets offer novel insights into the evolution of archaeal symbiosis and parasitism, enabling further studies of the cellular and molecular mechanisms of these relationships.
C1 [Podar, Mircea; Graham, David E.] Oak Ridge Natl Lab, Biosci Div, Oak Ridge, TN 37830 USA.
   [Podar, Mircea; Graham, David E.] Univ Tennessee, Dept Microbiol, Knoxville, TN 37996 USA.
   [Makarova, Kira S.; Wolf, Yuri I.; Koonin, Eugene V.] Natl Lib Med, Natl Ctr Biotechnol Informat, NIH, Bethesda, MD 20894 USA.
   [Reysenbach, Anna-Louise] Portland State Univ, Dept Biol, Portland, OR 97207 USA.
RP Podar, M (reprint author), Oak Ridge Natl Lab, Biosci Div, Oak Ridge, TN 37830 USA.
EM podarm@ornl.gov
RI Graham, David/F-8578-2010; 
OI Graham, David/0000-0001-8968-7344; Podar, Mircea/0000-0003-2776-0205
FU National Science Foundation [DEB1134877]; U.S. Department of Energy,
   Office of Biological and Environmental Research [DE-SC0006654];
   Laboratory Directed Research and Development Program of Oak Ridge
   National Laboratory (ORNL); U.S. Department of Energy
   [DE-AC05-00OR22725]; Intramural Research Program of the National
   Institutes of Health, National Library of Medicine
FX This research was supported by grants from the National Science
   Foundation (DEB1134877, ALR, MP), from the U.S. Department of Energy,
   Office of Biological and Environmental Research (DE-SC0006654, MP) and
   by the Laboratory Directed Research and Development Program of Oak Ridge
   National Laboratory (ORNL)(MP and DEG). ORNL is managed by UT-Battelle,
   LLC, for the U.S. Department of Energy under contract DE-AC05-00OR22725.
   KSM, YF and EVK are supported by the Intramural Research Program of the
   National Institutes of Health, National Library of Medicine. We thank
   Steven Allman for flow cytometry cell sorting, members of the MP and ALR
   labs for technical and bioinformatics support, Kostas Mavrommatis (Joint
   Genome Institute) for help with kmer frequency analysis, John Spouge
   (NCBI) for advice on estimation of genome size and Bettina Siebers for
   suggestions on the metabolic reconstructions. Special thanks go to the
   Yellowstone National Park Service for coordinating and allowing sampling
   under permit YELL-2008-SCI-5714 and to Prof. Karl O. Stetter for advice
   and his enthusiastic support of Nanoarchaeota research.
NR 69
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U1 1
U2 23
PU BIOMED CENTRAL LTD
PI LONDON
PA 236 GRAYS INN RD, FLOOR 6, LONDON WC1X 8HL, ENGLAND
SN 1745-6150
J9 BIOL DIRECT
JI Biol. Direct
PD APR 22
PY 2013
VL 8
AR 9
DI 10.1186/1745-6150-8-9
PG 20
WC Biology
SC Life Sciences & Biomedicine - Other Topics
GA 145FZ
UT WOS:000319001900001
PM 23607440
ER

PT J
AU Glans, PA
   Learmonth, T
   Smith, KE
   Ferro, S
   De Battisti, A
   Mattesini, M
   Ahuja, R
   Guo, JH
AF Glans, P. -A.
   Learmonth, T.
   Smith, K. E.
   Ferro, S.
   De Battisti, A.
   Mattesini, M.
   Ahuja, R.
   Guo, J. -H.
TI Electronic structure of boron doped diamond: An x-ray spectroscopic
   study
SO APPLIED PHYSICS LETTERS
LA English
DT Article
ID ABSORPTION FINE-STRUCTURE; CORE EXCITON; EMISSION; FILMS; PHOTOEMISSION;
   CRYSTALLINE; SCATTERING; GRAPHITE; SURFACES; EDGE
AB The valence and conduction band electronic structure of boron-doped diamond has been measured using soft x-ray emission and absorption spectroscopy. The experimental results reveal p-type doping in the diamond film through the appearance of states in the band-gap. Structure distortion was observed around the doping center, while the long range order of the diamond structure remains. A chemically shifted C 1s level explains why one of the absorption features seems to appear below the valence band maximum. An excitonic feature was observed in the boron-doped diamond, similar to that observed in pure diamond, indicating that the exciton binding energy remains the same upon B-doping. (C) 2013 AIP Publishing LLC [http://dx.doi.org/10.1063/1.4802814]
C1 [Glans, P. -A.; Learmonth, T.; Smith, K. E.] Boston Univ, Dept Phys, Boston, MA 02215 USA.
   [Glans, P. -A.; Guo, J. -H.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Adv Light Source, Berkeley, CA 94720 USA.
   [Ferro, S.; De Battisti, A.] Univ Ferrara, Dept Chem, I-44100 Ferrara, Italy.
   [Mattesini, M.] Univ Complutense Madrid, Dept Fis Tierra Astron & Astrofis 1, E-28040 Madrid, Spain.
   [Mattesini, M.] UCM, CSIC, Inst Geociencias, Fac Ciencias Fis, Madrid 28040, Spain.
   [Ahuja, R.] Uppsala Univ, Dept Phys & Astron, SE-75120 Uppsala, Sweden.
RP Guo, JH (reprint author), Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Adv Light Source, 1 Cyclotron Rd, Berkeley, CA 94720 USA.
EM jguo@lbl.gov
RI Glans, Per-Anders/G-8674-2016
FU NSF [DMR 0311792]; U.S. ARO [PH-45178]; U.S. AFOSR; U.S. Department of
   Energy [DE-AC02-05CH11231]
FX The Boston University program is supported by the NSF under DMR 0311792,
   by the U.S. ARO under PH-45178, and by the U.S. AFOSR. The work at ALS
   was supported by the U.S. Department of Energy under Contract No.
   DE-AC02-05CH11231.
NR 29
TC 2
Z9 2
U1 0
U2 42
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
   MELVILLE, NY 11747-4501 USA
SN 0003-6951
J9 APPL PHYS LETT
JI Appl. Phys. Lett.
PD APR 22
PY 2013
VL 102
IS 16
AR 162103
DI 10.1063/1.4802814
PG 4
WC Physics, Applied
SC Physics
GA 135ED
UT WOS:000318269300041
ER

PT J
AU Hikal, WM
   Burnham, AK
   Weeks, BL
AF Hikal, Walid M.
   Burnham, Alan K.
   Weeks, Brandon L.
TI Simultaneous determination of diffusion and sublimation kinetics at
   nanoscale: Pentaerythritol tetranitrate
SO APPLIED PHYSICS LETTERS
LA English
DT Article
ID VAPOR-PRESSURES; SURFACE; PETN; PARAMETERS; EVOLUTION; CRYSTALS
AB Many theoretical studies have been proposed to understand the mechanism of pentaerythritol tetranitrate (PETN) coarsening. Up to date, no experimental observations of diffusion have been made. We present experimental evidence of diffusion of PETN at nanoscale, as observed by UV-absorbance spectroscopy. As a result of thermal gradient, non-isothermal heating of continuous PETN nanofilms results in an initial increased absorbance at ambient temperatures indicating thickness increase due to coarsening, followed by absorbance decease due to film sublimation at relatively higher temperatures. Diffusion kinetics of PETN is measured both isothermally and non-isothermally and the results are in very good agreement. (C) 2013 AIP Publishing LLC [http://dx.doi.org/10.1063/1.4802890]
C1 [Hikal, Walid M.; Weeks, Brandon L.] Texas Tech Univ, Dept Chem Engn, Lubbock, TX 79409 USA.
   [Hikal, Walid M.] Assiut Univ, Dept Phys, Fac Sci, Assiut 71516, Egypt.
   [Burnham, Alan K.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
RP Hikal, WM (reprint author), Texas Tech Univ, Dept Chem Engn, Lubbock, TX 79409 USA.
EM walid.hikal@ttu.edu
RI Weeks, Brandon/P-6331-2014
OI Weeks, Brandon/0000-0003-2552-4129
FU NSF CAREER [CBET-0644832]; Office of Naval Research [N00014-11-1-0424]
FX This work was supported by NSF CAREER (CBET-0644832) and the Office of
   Naval Research under Project No. N00014-11-1-0424.
NR 22
TC 1
Z9 1
U1 0
U2 12
PU AMER INST PHYSICS
PI MELVILLE
PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA
SN 0003-6951
EI 1077-3118
J9 APPL PHYS LETT
JI Appl. Phys. Lett.
PD APR 22
PY 2013
VL 102
IS 16
AR 163104
DI 10.1063/1.4802890
PG 4
WC Physics, Applied
SC Physics
GA 135ED
UT WOS:000318269300069
ER

PT J
AU Ihlefeld, JF
   Brumbach, M
   Atcitty, S
AF Ihlefeld, Jon F.
   Brumbach, Michael
   Atcitty, Stanley
TI Band offsets of La2O3 on (0001) GaN grown by reactive molecular-beam
   epitaxy
SO APPLIED PHYSICS LETTERS
LA English
DT Article
ID GATE DIELECTRICS; LANTHANUM OXIDE; SPECTROSCOPY; SPECTRA
AB La2O3 films were prepared on (0001)-oriented GaN substrates via reactive molecular-beam epitaxy. Film orientation and phase were assessed using reflection high-energy electron and X-ray diffraction. Films were observed to grow as predominantly hexagonal La2O3 for thicknesses less than 10 nm while film thickness greater than 10 nm favored mixed cubic and hexagonal symmetries. Band offsets were characterized by X-ray photoelectron spectroscopy on hexagonally symmetric films and valence band offsets of 0.63 +/- 0.04 eV at the La2O3/GaN interface were measured. A conduction band offset of approximately 1.5 eV could be inferred from the measured valence band offset. (C) 2013 AIP Publishing LLC [http://dx.doi.org/10.1063/1.4803091]
C1 [Ihlefeld, Jon F.; Brumbach, Michael; Atcitty, Stanley] Sandia Natl Labs, Albuquerque, NM 87185 USA.
RP Ihlefeld, JF (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA.
EM jihlefe@sandia.gov
RI Ihlefeld, Jon/B-3117-2009
FU U.S. Department of Energy's Office of Electricity Delivery and Energy
   Reliability (OE) Energy Storage Program; U.S. Department of Energy's
   National Nuclear Security Administration [DE-AC04-94AL85000]
FX Support from the U.S. Department of Energy's Office of Electricity
   Delivery and Energy Reliability (OE) Energy Storage Program managed by
   Dr. Imre Gyuk is gratefully acknowledged. The authors acknowledge Stuart
   Van Deusen for assistance with RBS measurements and Dr. Harlan
   Brown-Shaklee for technical assistance and critical review of this
   manuscript. Sandia National Laboratories is a multiprogram laboratory
   managed and operated by Sandia Corporation, a wholly owned subsidiary of
   Lockheed Martin Corporation, for the U.S. Department of Energy's
   National Nuclear Security Administration under Contract No.
   DE-AC04-94AL85000.
NR 27
TC 5
Z9 5
U1 4
U2 25
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
   MELVILLE, NY 11747-4501 USA
SN 0003-6951
J9 APPL PHYS LETT
JI Appl. Phys. Lett.
PD APR 22
PY 2013
VL 102
IS 16
AR 162903
DI 10.1063/1.4803091
PG 4
WC Physics, Applied
SC Physics
GA 135ED
UT WOS:000318269300061
ER

PT J
AU Li, JV
   Kuciauskas, D
   Young, MR
   Repins, IL
AF Li, Jian V.
   Kuciauskas, Darius
   Young, Matthew R.
   Repins, Ingrid L.
TI Effects of sodium incorporation in Co-evaporated Cu2ZnSnSe4 thin-film
   solar cells
SO APPLIED PHYSICS LETTERS
LA English
DT Article
ID HOLE TRANSPORT; EFFICIENCY; POLYCRYSTALLINE; CZTS; NA
AB Sodium incorporation into Cu2ZnSnSe4 (CZTSe) substantially improves the device efficiency by enhancing the open-circuit voltage (V-OC) and fill factor. Sodium increases hole density, makes the acceptor shallower, shifts the Fermi level lower, and leads to higher built-in voltage and, consequently, higher V-OC. Sodium reduces the concentration of certain deep recombination centers, which further benefits V-OC. The increase of hole density and mobility enhances the CZTSe conductivity leading to higher fill factor. Sodium causes smaller depletion width, hence, lower short-circuit current. The minority-carrier lifetime decreases slightly after sodium is incorporated via the Mo-coated soda-lime glass, although adding NaF provides some amelioration. (C) 2013 AIP Publishing LLC. [http://dx.doi.org/10.1063/1.4802972]
C1 [Li, Jian V.; Kuciauskas, Darius; Young, Matthew R.; Repins, Ingrid L.] Natl Renewable Energy Lab, Golden, CO 80401 USA.
RP Li, JV (reprint author), Natl Renewable Energy Lab, 15013 Denver West Pkwy, Golden, CO 80401 USA.
EM jian.li@nrel.gov; ingrid.repins@nrel.gov
RI Li, Jian/B-1627-2016
FU U.S. Department of Energy [DE-AC36-08GO28308]
FX This research was supported by the U.S. Department of Energy under
   Contract No. DE-AC36-08GO28308 to NREL. The authors thank Carolyn Beall
   and Clay DeHart of NREL for film growth and Pat Dippo for PL
   measurement.
NR 34
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U1 7
U2 135
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
   MELVILLE, NY 11747-4501 USA
SN 0003-6951
EI 1077-3118
J9 APPL PHYS LETT
JI Appl. Phys. Lett.
PD APR 22
PY 2013
VL 102
IS 16
AR 163905
DI 10.1063/1.4802972
PG 4
WC Physics, Applied
SC Physics
GA 135ED
UT WOS:000318269300106
ER

PT J
AU Lin, JP
   Qiao, GJ
   Ma, LZ
   Ren, Y
   Yang, BF
   Fei, YJ
   Lei, L
AF Lin, Jianping
   Qiao, Guanjun
   Ma, Lingzhi
   Ren, Yang
   Yang, Baifeng
   Fei, Youjian
   Lei, Lei
TI Heterogeneous in-situ nanostructure contributes to the thermoelectric
   performance of Zn4Sb3
SO APPLIED PHYSICS LETTERS
LA English
DT Article
ID PHONON-GLASS; MATERIAL BETA-ZN4SB3; FIGURE; MERIT; ZINC; TRANSITIONS;
   DIFFUSION
AB Single-phase Zn4Sb3 and ZnSb-containing samples were prepared by Plasma Activated Sintering. An abrupt decrease of thermal conductivity was found at about 400K, which is attributed to the microstructure change of Zn4Sb3. Nanoscale inclusions and compositional inhomogeneities were found in Zn4Sb3 sample at 473K by high-resolution transmission electron microscopy. The phonon scattering is enhanced by increasing grain boundaries and chaotic structure, which reduces the thermal conductivity and increases the thermoelectric performance of Zn4Sb3 at elevated temperature. The Rietveld refinement results show that large ZnSb grains in ZnSb-containing samples will accommodate excess Zn atoms, and then reduce thermoelectric performance. (C) 2013 AIP Publishing LLC [http://dx.doi.org/10.1063/1.4802780]
C1 [Lin, Jianping; Qiao, Guanjun; Ma, Lingzhi; Yang, Baifeng; Fei, Youjian; Lei, Lei] Xi An Jiao Tong Univ, State Key Lab Mech Behav Mat, Xian 710049, Peoples R China.
   [Qiao, Guanjun] Jiangsu Univ, Sch Mat Sci & Engn, Zhenjiang 212013, Peoples R China.
   [Ren, Yang] Argonne Natl Lab, Adv Photon Source, Xray Sci Div, Argonne, IL 60439 USA.
RP Qiao, GJ (reprint author), Xi An Jiao Tong Univ, State Key Lab Mech Behav Mat, Xian 710049, Peoples R China.
EM gjqiao@mail.xjtu.edu.cn
FU U.S. Department of Energy, Office of Science, Office of Basic Energy
   Science [DE-AC02-06CH11357]
FX The authors thank Maud Giot, Guilhem Dezanneau, and Yang Hu at Ecole
   Centrale de Paris for assistance with the structure refinement; Shengwu
   Guo at Xi'an Jiaotong university for assistance with the HRTEM analysis.
   Use of the Advanced Photon Source was supported by the U.S. Department
   of Energy, Office of Science, Office of Basic Energy Science, under
   Contract No. DE-AC02-06CH11357.
NR 24
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U1 3
U2 59
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
   MELVILLE, NY 11747-4501 USA
SN 0003-6951
J9 APPL PHYS LETT
JI Appl. Phys. Lett.
PD APR 22
PY 2013
VL 102
IS 16
AR 163902
DI 10.1063/1.4802780
PG 5
WC Physics, Applied
SC Physics
GA 135ED
UT WOS:000318269300103
ER

PT J
AU Liu, S
   Ihlefeld, JF
   Dominguez, J
   Gonzales, EF
   Bower, JE
   Burckel, DB
   Sinclair, MB
   Brener, I
AF Liu, Sheng
   Ihlefeld, Jon F.
   Dominguez, Jason
   Gonzales, Edward F.
   Bower, John Eric
   Burckel, D. Bruce
   Sinclair, Michael B.
   Brener, Igal
TI Realization of tellurium-based all dielectric optical metamaterials
   using a multi-cycle deposition-etch process
SO APPLIED PHYSICS LETTERS
LA English
DT Article
ID NEGATIVE REFRACTIVE-INDEX; THIN-FILMS
AB Tellurium (Te) dielectric resonator metamaterials for thermal infrared applications were fabricated using a multi-cycle deposition-etch process that circumvents pinch-off issues during deposition. Deposition and etching of Te were studied in detail. Metamaterial samples with varying resonator dimensions were fabricated using this technique. All the samples showed two transmission minima corresponding to magnetic and electric dipole resonances. Longer resonant wavelengths were observed as the resonator dimension was increased. Observation of spectral overlap between magnetic and electric resonances gives us the potential opportunity to realize a negative refractive index material. (C) 2013 AIP Publishing LLC [http://dx.doi.org/10.1063/1.4803019]
C1 [Liu, Sheng; Ihlefeld, Jon F.; Dominguez, Jason; Gonzales, Edward F.; Bower, John Eric; Burckel, D. Bruce; Sinclair, Michael B.; Brener, Igal] Sandia Natl Labs, Albuquerque, NM 87185 USA.
   [Liu, Sheng; Gonzales, Edward F.; Brener, Igal] Sandia Natl Labs, Ctr Integrated Nanotechnol, Albuquerque, NM 87185 USA.
RP Liu, S (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA.
EM snliu@sandia.gov
RI Ihlefeld, Jon/B-3117-2009
FU U.S. Department of Energy's National Nuclear Security Administration
   [DE-AC04-94AL85000]
FX We acknowledge useful discussion with Jeremy B. Wright, technical
   assistance from James Ginn, sample preparation assistance from Mia
   Angelica Blea, and scanning electron microscopy assistance from Bonnie
   B. McKenzie. This work was performed, in part, at the Center for
   Integrated Nanotechnologies, a U.S. Department of Energy, Office of
   Basic Energy Sciences user facility. Sandia National Laboratories is a
   multi-program laboratory managed and operated by Sandia Corporation, a
   wholly owned subsidiary of Lockheed Martin Corporation, for the U.S.
   Department of Energy's National Nuclear Security Administration under
   Contract DE-AC04-94AL85000.
NR 24
TC 11
Z9 11
U1 0
U2 31
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
   MELVILLE, NY 11747-4501 USA
SN 0003-6951
EI 1077-3118
J9 APPL PHYS LETT
JI Appl. Phys. Lett.
PD APR 22
PY 2013
VL 102
IS 16
AR 161905
DI 10.1063/1.4803019
PG 4
WC Physics, Applied
SC Physics
GA 135ED
UT WOS:000318269300027
ER

PT J
AU Saha, S
   Hilali, MM
   Onyegam, EU
   Sarkar, D
   Jawarani, D
   Rao, RA
   Mathew, L
   Smith, RS
   Xu, DW
   Das, UK
   Sopori, B
   Banerjee, SK
AF Saha, Sayan
   Hilali, Mohamed M.
   Onyegam, Emmanuel U.
   Sarkar, Dabraj
   Jawarani, Dharmesh
   Rao, Rajesh A.
   Mathew, Leo
   Smith, Ryan S.
   Xu, Dewei
   Das, Ujjwal K.
   Sopori, Bhushan
   Banerjee, Sanjay K.
TI Single heterojunction solar cells on exfoliated flexible similar to 25
   mu m thick mono-crystalline silicon substrates
SO APPLIED PHYSICS LETTERS
LA English
DT Article
ID STEADY-STATE PHOTOCONDUCTANCE; EFFICIENCY; VOLTAGE
AB Mono-crystalline silicon single heterojunction solar cells on flexible, ultra-thin (similar to 25 mu m) substrates have been developed based on a kerf-less exfoliation method. Optical and electrical measurements demonstrate maintained structural integrity of these flexible substrates. Among several single heterojunction similar to 25 mu m thick solar cells fabricated with un-optimized processes, the highest open circuit voltage of 603 mV, short circuit current of 34.4 mA/cm(2), and conversion efficiency of 14.9% are achieved separately on three different cells. Preliminary reliability test results that include thermal shock and highly accelerated stress tests are also shown to demonstrate compatibility of this technology for use in photovoltaic modules. (C) 2013 AIP Publishing LLC [http://dx.doi.org/10.1063/1.4803174]
C1 [Saha, Sayan; Hilali, Mohamed M.; Onyegam, Emmanuel U.; Banerjee, Sanjay K.] Univ Texas Austin, Dept Elect & Comp Engn, Austin, TX 78758 USA.
   [Sarkar, Dabraj] Univ Florida, Dept Elect & Comp Engn, Gainesville, FL 32611 USA.
   [Jawarani, Dharmesh; Smith, Ryan S.; Xu, Dewei] AstroWatt Inc, Austin, TX 78758 USA.
   [Rao, Rajesh A.; Mathew, Leo] Appl Novel Devices, Austin, TX 78758 USA.
   [Das, Ujjwal K.] Univ Delaware, Inst Energy Convers, Newark, DE 19716 USA.
   [Sopori, Bhushan] Natl Renewable Energy Lab, Golden, CO 80401 USA.
RP Saha, S (reprint author), Univ Texas Austin, Dept Elect & Comp Engn, Austin, TX 78758 USA.
EM sayan.saha@utexas.edu
FU DOE SUNSHOT [DE-EE0005404]; Bay Area Photovoltaic Consortium (BAPVC);
   NSF NNIN program
FX We thank M. Ainom, R. Garcia, and R. Stout for their invaluable
   technical support with the cell fabrication process, and D2 Solar for
   carrying out the thermal stress and HAST testing. This work was
   supported in part by the DOE SUNSHOT (Grant No. DE-EE0005404), Bay Area
   Photovoltaic Consortium (BAPVC), and NSF NNIN program.
NR 14
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U1 2
U2 37
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
   MELVILLE, NY 11747-4501 USA
SN 0003-6951
J9 APPL PHYS LETT
JI Appl. Phys. Lett.
PD APR 22
PY 2013
VL 102
IS 16
AR 163904
DI 10.1063/1.4803174
PG 5
WC Physics, Applied
SC Physics
GA 135ED
UT WOS:000318269300105
ER

PT J
AU Brownfield, DG
   Venugopalan, G
   Lo, A
   Mori, H
   Tanner, K
   Fletcher, DA
   Bissell, MJ
AF Brownfield, Douglas G.
   Venugopalan, Gautham
   Lo, Alvin
   Mori, Hidetoshi
   Tanner, Kandice
   Fletcher, Daniel A.
   Bissell, Mina J.
TI Patterned Collagen Fibers Orient Branching Mammary Epithelium through
   Distinct Signaling Modules
SO CURRENT BIOLOGY
LA English
DT Article
ID EXTRACELLULAR-MATRIX; GLAND DEVELOPMENT; CELL-MIGRATION; MORPHOGENESIS;
   RAC; DIFFERENTIATION; MESENCHYME; EXPRESSION; ALIGNMENT; INTEGRIN
AB For decades, the work of cell and developmental biologists has demonstrated the striking ability of the mesenchyme and the stroma to instruct epithelial form and function in the mammary gland [1-3], but the role of extracellular matrix (ECM) molecules in mammary pattern specification has not been elucidated. Here, we show that stromal collagen I (Col-I) fibers in the mammary fat pad are axially oriented prior to branching morphogenesis. Upon puberty, the branching epithelium orients along these fibers, thereby adopting a similar axial bias. To establish a causal relationship from Col-I fiber to epithelial orientation, we embedded mammary organoids within axially oriented Col-I fiber gels and observed dramatic epithelial co-orientation. Whereas a constitutively active form of Rac1, a molecule implicated in cell motility, prevented a directional epithelial response to Col-I fiber orientation, inhibition of the RhoA/Rho-associated kinase (ROCK) pathway did not. However, time-lapse studies revealed that, within randomly oriented Col-1 matrices, the epithelium axially aligns fibers at branch sites via RhoA/ROCK-mediated contractions. Our data provide an explanation for how the stromal ECM encodes architectural cues for branch orientation as well as how the branching epithelium interprets and reinforces these cues through distinct signaling processes.
C1 [Brownfield, Douglas G.; Venugopalan, Gautham; Fletcher, Daniel A.; Bissell, Mina J.] Univ Calif Berkeley, Dept Bioengn, Berkeley, CA 94720 USA.
   [Lo, Alvin; Mori, Hidetoshi; Tanner, Kandice; Bissell, Mina J.] Univ Calif Berkeley, Life Sci Div, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
   [Fletcher, Daniel A.] Univ Calif Berkeley, Phys Biosci Div, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
   [Brownfield, Douglas G.] Stanford Univ, Sch Med, Dept Biochem, Stanford, CA 94305 USA.
   [Tanner, Kandice] NCI, Lab Cell Biol, Ctr Canc Res, NIH, Bethesda, MD 20892 USA.
RP Brownfield, DG (reprint author), Univ Calif Berkeley, Dept Bioengn, Berkeley, CA 94720 USA.
EM dbrownfi@stanford.edu; mjbissell@lbl.gov
FU US Department of Energy; Office of Biological and Environmental Research
   [DE-AC02-05CH1123]; National Cancer Institute (NCI) (Bay Area Physical
   Sciences-Oncology Center, University of California) [R37CA064786,
   U54CA126552, U01CA143233, U54CA112970, U54CA143836]; US Department of
   Defense Innovator Award [W81XWH0810736]; NCI; National Science
   Foundation
FX This research was supported by grants from the US Department of Energy
   and the Office of Biological and Environmental Research
   (DE-AC02-05CH1123) to M.J.B.; by the National Cancer Institute (NCI)
   (R37CA064786, U54CA126552, U01CA143233, U54CA112970, and U54CA143836;
   Bay Area Physical Sciences-Oncology Center, University of California) to
   M.J.B. and D.G.B.; and by a US Department of Defense Innovator Award
   (W81XWH0810736) to M.J.B. The work of D.A.F. and G.V. was supported by
   the NCI and National Science Foundation. We are grateful to Saori Furuta
   as well as both the Bissell and Fletcher laboratories for discussion and
   critical reading of the manuscript. We thank Sanjay Kumar and Joanna
   MacKay for the image correlation MATLAB code.
NR 39
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U1 0
U2 22
PU CELL PRESS
PI CAMBRIDGE
PA 600 TECHNOLOGY SQUARE, 5TH FLOOR, CAMBRIDGE, MA 02139 USA
SN 0960-9822
J9 CURR BIOL
JI Curr. Biol.
PD APR 22
PY 2013
VL 23
IS 8
BP 703
EP 709
DI 10.1016/j.cub.2013.03.032
PG 7
WC Biochemistry & Molecular Biology; Cell Biology
SC Biochemistry & Molecular Biology; Cell Biology
GA 131ND
UT WOS:000317999500025
PM 23562267
ER

PT J
AU Malm, EB
   Monserud, NC
   Brown, CG
   Wachulak, PW
   Xu, HW
   Balakrishnan, G
   Chao, WL
   Anderson, E
   Marconi, MC
AF Malm, Erik B.
   Monserud, Nils C.
   Brown, Christopher G.
   Wachulak, Przemyslaw W.
   Xu, Huiwen
   Balakrishnan, Ganesh
   Chao, Weilun
   Anderson, Erik
   Marconi, Mario C.
TI Tabletop single-shot extreme ultraviolet Fourier transform holography of
   an extended object
SO OPTICS EXPRESS
LA English
DT Article
ID X-RAY HOLOGRAPHY; MICROSCOPY; RESOLUTION; LASER; NM
AB We demonstrate single and multi-shot Fourier transform holography with the use of a tabletop extreme ultraviolet laser. The reference wave was produced by a Fresnel zone plate with a central opening that allowed the incident beam to illuminate the sample directly. The high reference wave intensity allows for larger objects to be imaged compared to mask-based lensless Fourier transform holography techniques. We obtain a spatial resolution of 169 nm from a single laser pulse and a resolution of 128 nm from an accumulation of 20 laser pulses for an object similar to 11x11 mu m(2) in size. This experiment utilized a tabletop extreme ultraviolet laser that produces a highly coherent similar to 1.2 ns laser pulse at 46.9 nm wavelength. (c) 2013 Optical Society of America
C1 [Malm, Erik B.; Monserud, Nils C.; Brown, Christopher G.; Marconi, Mario C.] Colorado State Univ, Engn Res Ctr Extreme Ultraviolet Sci & Technol, Ft Collins, CO 80523 USA.
   [Malm, Erik B.; Monserud, Nils C.; Brown, Christopher G.; Marconi, Mario C.] Colorado State Univ, Dept Elect & Comp Engn, Ft Collins, CO 80523 USA.
   [Wachulak, Przemyslaw W.] Mil Univ Technol, Inst Optoelect, PL-00908 Warsaw, Poland.
   [Xu, Huiwen; Balakrishnan, Ganesh] Univ New Mexico, Ctr High Technol Mat, Albuquerque, NM 87106 USA.
   [Xu, Huiwen; Balakrishnan, Ganesh] Univ New Mexico, Dept Elect & Comp Engn, Albuquerque, NM 87106 USA.
   [Chao, Weilun; Anderson, Erik] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Ctr Xray Opt, Berkeley, CA 94720 USA.
RP Malm, EB (reprint author), Colorado State Univ, Engn Res Ctr Extreme Ultraviolet Sci & Technol, Ft Collins, CO 80523 USA.
EM malm@rams.colostate.edu
FU Defense Threat Reduction Agency - Joint Science and Technology office
   for Chemical Biological Defense [HDTRA1-10-1-007]; National Science
   Foundation engineering research center for extreme ultraviolet science
   and technology award [EEC 0310717]
FX The authors acknowledge support by the Defense Threat Reduction Agency -
   Joint Science and Technology office for Chemical Biological Defense
   (Grant No. HDTRA1-10-1-007) and the National Science Foundation
   engineering research center for extreme ultraviolet science and
   technology award EEC 0310717.
NR 32
TC 14
Z9 14
U1 2
U2 30
PU OPTICAL SOC AMER
PI WASHINGTON
PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA
SN 1094-4087
J9 OPT EXPRESS
JI Opt. Express
PD APR 22
PY 2013
VL 21
IS 8
BP 9959
EP 9966
DI 10.1364/OE.21.009959
PG 8
WC Optics
SC Optics
GA 133PP
UT WOS:000318151600072
PM 23609701
ER

PT J
AU Keiber, T
   Bridges, F
   Sales, BC
   Wang, H
AF Keiber, T.
   Bridges, F.
   Sales, B. C.
   Wang, H.
TI Complex role for thallium in PbTe: Tl from local probe studies
SO PHYSICAL REVIEW B
LA English
DT Article
ID SCATTERING
AB When PbTe, a good thermoelectricmaterial, is doped with a few percent Tl, the figure of merit ZT = T S-2/(rho kappa) [S is the Seebeck coefficient, rho the electrical resistivity, and. the thermal conductivity] is dramatically improved. The maximum value of ZT occurs for approximately 2% Tl, but the factors limiting ZT are as yet poorly understood. From a detailed local structure study of PbTe: Tl using the extended x-ray absorption fine structure (EXAFS) technique, we find that Tl substitutes primarily as Tl(+ 1) on the Pb site, with no evidence for any solubility issue, any significant fraction of Tl(+ 3), or any Tl interstitials. However it is not a simple substitution as there is evidence for increasing Te vacancies on neighboring sites with increasing Tl concentration, x. In addition there is also increasing disorder with x-Tl-Te bond length disorder as well as the vacancy defects-that will scatter the hole carriers and begin to increase the electrical resistivity in spite of an increase in hole concentration. This increased disorder is likely an important factor limiting ZT. DOI: 10.1103/PhysRevB.87.144104
C1 [Keiber, T.; Bridges, F.] Univ Calif Santa Cruz, Dept Phys, Santa Cruz, CA 95064 USA.
   [Sales, B. C.; Wang, H.] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA.
RP Keiber, T (reprint author), Univ Calif Santa Cruz, Dept Phys, Santa Cruz, CA 95064 USA.
RI Wang, Hsin/A-1942-2013
OI Wang, Hsin/0000-0003-2426-9867
FU NSF [DMR1005568]; US Department of Energy, Basic Energy Sciences,
   Materials Sciences and Engineering Division
FX The XAS work was supported under NSF Grant No. DMR1005568. The
   experiments were performed at SSRL, operated by the DOE, Division of
   Chemical Sciences. Work at Oak Ridge was supported by the US Department
   of Energy, Basic Energy Sciences, Materials Sciences and Engineering
   Division.
NR 23
TC 3
Z9 3
U1 1
U2 20
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD APR 22
PY 2013
VL 87
IS 14
AR 144104
DI 10.1103/PhysRevB.87.144104
PG 5
WC Physics, Condensed Matter
SC Physics
GA 129ES
UT WOS:000317822300004
ER

PT J
AU Lazarevic, N
   Radonjic, M
   Scepanovic, M
   Lei, HC
   Tanaskovic, D
   Petrovic, C
   Popovic, ZV
AF Lazarevic, N.
   Radonjic, M.
   Scepanovic, M.
   Lei, Hechang
   Tanaskovic, D.
   Petrovic, C.
   Popovic, Z. V.
TI Lattice dynamics of KNi2Se2
SO PHYSICAL REVIEW B
LA English
DT Article
ID SUPERCONDUCTIVITY; PHONONS
AB We report first-principles calculations of the lattice dynamics of KNi2Se2 together with Raman scattering study. We have observed three out of four Raman-active modes predicted by factor group analysis. Calculated phonon frequencies are in good agreement with experimental findings. Contrary to its iron counterpart (K-x Fe2-y Se-2), K0.95Ni1.86Se2 does not show vacancy ordering. DOI: 10.1103/PhysRevB.87.144305
C1 [Lazarevic, N.; Scepanovic, M.; Popovic, Z. V.] Univ Belgrade, Inst Phys Belgrade, Ctr Solid State Phys & New Mat, Belgrade 11080, Serbia.
   [Radonjic, M.; Tanaskovic, D.] Univ Belgrade, Inst Phys Belgrade, Comp Sci Lab, Belgrade 11080, Serbia.
   [Lei, Hechang; Petrovic, C.] Brookhaven Natl Lab, Condensed Matter Phys & Mat Sci Dept, Upton, NY 11973 USA.
RP Lazarevic, N (reprint author), Univ Belgrade, Inst Phys Belgrade, Ctr Solid State Phys & New Mat, Pregrevica 118, Belgrade 11080, Serbia.
RI Lazarevic, Nenad/C-3254-2012; Scepanovic, Maja/F-6720-2010; Petrovic,
   Cedomir/A-8789-2009; Radonjic, Milos/M-1890-2015; LEI,
   Hechang/H-3278-2016
OI Petrovic, Cedomir/0000-0001-6063-1881; 
FU Serbian Ministry of Education, Science, and Technological Development
   [ON171032, III45018, ON171017]; Office of Basic Energy Sciences, US
   Department of Energy [DE-Ac02-98CH10886]; FP7 Projects [EGI-InSPIRE,
   PRACE-1IP, HP-SEE]
FX This work was supported by the Serbian Ministry of Education, Science,
   and Technological Development under Projects No. ON171032, No. III45018,
   and No. ON171017. Part of this work was carried out at the Brookhaven
   National Laboratory which is operated for the Office of Basic Energy
   Sciences, US Department of Energy, by Brookhaven Science Associates
   (DE-Ac02-98CH10886). Numerical simulations were run on the AEGIS
   e-Infrastructure, supported in part by FP7 Projects No. EGI-InSPIRE, No.
   PRACE-1IP, and No. HP-SEE.
NR 19
TC 9
Z9 9
U1 3
U2 27
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD APR 22
PY 2013
VL 87
IS 14
AR 144305
DI 10.1103/PhysRevB.87.144305
PG 4
WC Physics, Condensed Matter
SC Physics
GA 129ES
UT WOS:000317822300006
ER

PT J
AU Ye, F
   Chi, SX
   Chakoumakos, BC
   Fernandez-Baca, JA
   Qi, TF
   Cao, G
AF Ye, Feng
   Chi, Songxue
   Chakoumakos, Bryan C.
   Fernandez-Baca, Jaime A.
   Qi, Tongfei
   Cao, G.
TI Magnetic and crystal structures of Sr2IrO4: A neutron diffraction study
SO PHYSICAL REVIEW B
LA English
DT Article
ID POWDER DIFFRACTION
AB We report a single-crystal neutron diffraction study of the layered Sr2IrO4. This work unambiguously determines the magnetic structure of the system and reveals that the spin orientation rigidly tracks the staggered rotation of the IrO6 octahedra in Sr2IrO4. The long-range antiferromagnetic order has a canted spin configuration with an ordered moment of 0.208(3) mu(B)/Ir site within the basal plane; a detailed examination of the spin canting yields 0.202(3) and 0.049(2) mu B/site for the a axis and the b axis, respectively. It is intriguing that forbidden nuclear reflections of space group I4(1)/acd are also observed in a wide temperature range from 4 K to 600 K, which suggests a reduced crystal structure symmetry. This neutron-scattering work provides a direct, well-refined experimental characterization of the magnetic and crystal structures that are crucial to the understanding of the unconventional magnetism exhibited in this unusual magnetic insulator. DOI: 10.1103/PhysRevB.87.140406
C1 [Ye, Feng; Chi, Songxue; Chakoumakos, Bryan C.; Fernandez-Baca, Jaime A.] Oak Ridge Natl Lab, Quantum Condensed Matter Div, Oak Ridge, TN 37831 USA.
   [Ye, Feng; Qi, Tongfei; Cao, G.] Univ Kentucky, Dept Phys & Astron, Ctr Adv Mat, Lexington, KY 40506 USA.
   [Fernandez-Baca, Jaime A.] Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA.
RP Ye, F (reprint author), Oak Ridge Natl Lab, Quantum Condensed Matter Div, Oak Ridge, TN 37831 USA.
RI Ye, Feng/B-3210-2010; Qi, Tongfei/A-7226-2013; Fernandez-Baca,
   Jaime/C-3984-2014; Chi, Songxue/A-6713-2013; Chakoumakos,
   Bryan/A-5601-2016
OI Ye, Feng/0000-0001-7477-4648; Fernandez-Baca, Jaime/0000-0001-9080-5096;
   Chi, Songxue/0000-0002-3851-9153; Chakoumakos, Bryan/0000-0002-7870-6543
FU Scientific User Facilities Division, Office of Basic Energy Sciences, US
   Department of Energy; NSF [DMR-0856234, EPS-0814194]
FX We thank Q. Huang, S. Lovesey, D. Khalyavin, and G. Khaliullin for
   invaluable discussions. Research at ORNL's High Flux Isotope Reactor was
   sponsored by the Scientific User Facilities Division, Office of Basic
   Energy Sciences, US Department of Energy. The work at University of
   Kentucky was supported by NSF through Grants No. DMR-0856234 and No.
   EPS-0814194.
NR 36
TC 66
Z9 66
U1 5
U2 100
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD APR 22
PY 2013
VL 87
IS 14
AR 140406(R)
DI 10.1103/PhysRevB.87.140406
PG 6
WC Physics, Condensed Matter
SC Physics
GA 129ES
UT WOS:000317822300001
ER

PT J
AU Best, A
   Beard, M
   Gorres, J
   Couder, M
   deBoer, R
   Falahat, S
   Guray, RT
   Kontos, A
   Kratz, KL
   LeBlanc, PJ
   Li, Q
   O'Brien, S
   Ozkan, N
   Pignatari, M
   Sonnabend, K
   Talwar, R
   Tan, W
   Uberseder, E
   Wiescher, M
AF Best, A.
   Beard, M.
   Goerres, J.
   Couder, M.
   deBoer, R.
   Falahat, S.
   Guray, R. T.
   Kontos, A.
   Kratz, K. -L.
   LeBlanc, P. J.
   Li, Q.
   O'Brien, S.
   Ozkan, N.
   Pignatari, M.
   Sonnabend, K.
   Talwar, R.
   Tan, W.
   Uberseder, E.
   Wiescher, M.
TI Measurement of the reaction O-17(alpha,n)Ne-20 and its impact on the s
   process in massive stars
SO PHYSICAL REVIEW C
LA English
DT Article
ID THERMONUCLEAR REACTION-RATES; PROCESS NUCLEOSYNTHESIS; LOW-METALLICITY;
   NEUTRON SOURCE; V51(P,N)CR51 REACTION; STELLAR EVOLUTION;
   CROSS-SECTIONS; ROTATING STARS; ENERGY-LEVELS; NE-21
AB Background: The ratio between the rates of the reactions O-17(alpha,n)Ne-20 and O-17(alpha,gamma)Ne-21 determines whether O-16 is an efficient neutron poison for the s process in massive stars, or if most of the neutrons captured by O-16(n,gamma) are recycled into the stellar environment. This ratio is of particular relevance to constrain the s process yields of fast rotating massive stars at low metallicity.
   Purpose: Recent results on the (alpha,gamma) channel have made it necessary to measure the (alpha,n) reaction more precisely and investigate the effect of the new data on s process nucleosynthesis in massive stars.
   Method: The O-17(alpha, n((0+1))) reaction has been measured with a moderating neutron detector. In addition, the (alpha, n(1)) channel has been measured independently by observation of the characteristic 1633 keV gamma transition in Ne-20. The reaction cross section was determined with a simultaneous R-matrix fit to both channels. (alpha, n) and (alpha, gamma) resonance strengths of states lying below the covered energy range were estimated using their known properties from the literature.
   Result: The reaction channels O-17(alpha, n(0))Ne-20 and O-17(alpha, n(1)gamma)Ne-20 were measured in the energy range E-alpha = 800 keV to 2300 keV. A new O-17(alpha, n) reaction rate was deduced for the temperature range 0.1 GK to 10 GK. At typical He burning temperatures, the combination of the new (alpha, n) rate with a previously measured (alpha,gamma) rate gives approximately the same ratio as current compilations. The influence on the nucleosynthesis of the s process in massive stars at low metallicity is discussed.
   Conclusions: It was found that in He burning conditions the (alpha,gamma) channel is strong enough to compete with the neutron channel. This leads to a less efficient neutron recycling compared to a previous suggestion of a very weak (alpha,gamma) channel. S process calculations using our rates confirm that massive rotating stars do play a significant role in the production of elements up to Sr, but they strongly reduce the s process contribution to heavier elements. DOI: 10.1103/PhysRevC.87.045805
C1 [Best, A.; Beard, M.; Goerres, J.; Couder, M.; deBoer, R.; Falahat, S.; Kontos, A.; LeBlanc, P. J.; Li, Q.; O'Brien, S.; Talwar, R.; Tan, W.; Uberseder, E.; Wiescher, M.] Univ Notre Dame, Dept Phys, Notre Dame, IN 46556 USA.
   [Beard, M.] GSI Helmholzzentrum Schwerionenforsch, ExtreMe Matter Inst EMMI, D-54291 Darmstadt, Germany.
   [Falahat, S.; Kratz, K. -L.] Max Planck Inst Chem, Dept Biogeochem, D-55020 Mainz, Germany.
   [Guray, R. T.; Ozkan, N.] Kocaeli Univ, Dept Phys, TR-41380 Umuttepe, Kocaeli, Turkey.
   [Pignatari, M.] Univ Basel, Dept Phys, CH-4056 Basel, Switzerland.
   [Sonnabend, K.] Goethe Univ Frankfurt, Inst Appl Phys, D-60325 Frankfurt, Germany.
RP Best, A (reprint author), Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
EM abest1@nd.edu
RI Tan, Wanpeng/A-4687-2008; Ozkan, Nalan/B-9710-2009; Guray,
   Recep/B-9653-2009; Beard, MATTHEW/E-4270-2015; Couder,
   Manoel/B-1439-2009; 
OI Tan, Wanpeng/0000-0002-5930-1823; Beard, MATTHEW/0000-0002-2711-1355;
   Couder, Manoel/0000-0002-0636-744X; Best, Andreas/0000-0001-8869-9757
FU National Science Foundation [Phys-0758100]; Joint Institute for Nuclear
   Astrophysics through the NSF Physics Frontier Center program
   [Phys-0822648]; Ambizione grant of the SNSF (MP, Switzerland); EU
   [MIRG-CT-2006-046520]; EuroGenesis (MASHE); Alliance Program of the
   Helmholtz Association [AH216/EMMI]
FX The authors express their gratitude to the technical staff of the
   Nuclear Science Laboratory at Notre Dame. This work was funded by the
   National Science Foundation through grant no. Phys-0758100 and the Joint
   Institute for Nuclear Astrophysics supported through the NSF Physics
   Frontier Center program, grant no. Phys-0822648. M.P. acknowledges
   support from the Ambizione grant of the SNSF (MP, Switzerland), EU
   MIRG-CT-2006-046520, and EuroGenesis (MASHE). M. B. acknowledges support
   from the Alliance Program of the Helmholtz Association (AH216/EMMI).
NR 62
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U1 2
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PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 2469-9985
EI 2469-9993
J9 PHYS REV C
JI Phys. Rev. C
PD APR 22
PY 2013
VL 87
IS 4
AR 045805
DI 10.1103/PhysRevC.87.045805
PG 13
WC Physics, Nuclear
SC Physics
GA 129TT
UT WOS:000317866200007
ER

PT J
AU More, SN
   Ekstrom, A
   Furnstahl, RJ
   Hagen, G
   Papenbrock, T
AF More, S. N.
   Ekstroem, A.
   Furnstahl, R. J.
   Hagen, G.
   Papenbrock, T.
TI Universal properties of infrared oscillator basis extrapolations
SO PHYSICAL REVIEW C
LA English
DT Article
ID EFFECTIVE-FIELD-THEORY; CORE SHELL-MODEL; FINITE-VOLUME
AB Recent work has shown that a finite harmonic oscillator basis in nuclear many-body calculations effectively imposes a hard-wall boundary condition in coordinate space, motivating infrared extrapolation formulas for the energy and other observables. Here we further refine these formulas by studying two-body models and the deuteron. We accurately determine the box size as a function of the model space parameters, and compute scattering phase shifts in the harmonic oscillator basis. We show that the energy shift can be well approximated in terms of the asymptotic normalization coefficient and the bound-state momentum, discuss higher-order corrections for weakly bound systems, and illustrate this universal property using unitarily equivalent calculations of the deuteron. DOI: 10.1103/PhysRevC.87.044326
C1 [More, S. N.; Furnstahl, R. J.] Ohio State Univ, Dept Phys, Columbus, OH 43210 USA.
   [Ekstroem, A.] Univ Oslo, Dept Phys, N-0316 Oslo, Norway.
   [Ekstroem, A.] Univ Oslo, Ctr Math Applicat, N-0316 Oslo, Norway.
   [Ekstroem, A.] Michigan State Univ, Natl Superconducting Cyclotron Lab, E Lansing, MI 48824 USA.
   [Hagen, G.; Papenbrock, T.] Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA.
   [Hagen, G.; Papenbrock, T.] Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA.
RP More, SN (reprint author), Ohio State Univ, Dept Phys, 174 W 18th Ave, Columbus, OH 43210 USA.
EM more.13@osu.edu; furnstahl.1@osu.edu; tpapenbr@utk.edu
RI Ekstrom, Andreas/D-3782-2014; 
OI Furnstahl, Richard/0000-0002-3483-333X; Papenbrock,
   Thomas/0000-0001-8733-2849
FU National Science Foundation [PHY-1002478]; Department of Energy
   [DE-FG02-96ER40963, DE-AC05-00OR22725, DE-SC0008499, DE-SC0008533];
   Swedish Research Council
FX We thank R. Briceno, A. Bulgac, Z. Davoudi, K. Hebeler, H. Hergert, R.
   Perry, and K. Wendt for useful discussions, K. Wendt for generating
   deuteron eigenvalues with SRG-evolved potentials for a very wide range
   of (h) over bar Omega and N, and E. Jurgenson for triton results. This
   work was supported in part by the National Science Foundation under
   Grant No. PHY-1002478 and the Department of Energy under Grants No.
   DE-FG02-96ER40963 (University of Tennessee), No. DE-AC05-00OR22725 (Oak
   Ridge National Laboratory), and No. DE-SC0008499/DE-SC0008533 (SciDAC-3
   NUCLEI project), and by the Swedish Research Council.
NR 33
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PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 2469-9985
EI 2469-9993
J9 PHYS REV C
JI Phys. Rev. C
PD APR 22
PY 2013
VL 87
IS 4
AR 044326
DI 10.1103/PhysRevC.87.044326
PG 14
WC Physics, Nuclear
SC Physics
GA 129TT
UT WOS:000317866200002
ER

PT J
AU Chachamis, G
   Hentschinski, M
   Martinez, JDM
   Vera, AS
AF Chachamis, G.
   Hentschinski, M.
   Madrigal Martinez, J. D.
   Sabio Vera, A.
TI Next-to-leading order corrections to the gluon-induced forward jet
   vertex from the high energy effective action
SO PHYSICAL REVIEW D
LA English
DT Article
ID QUARK CONTRIBUTION; MUELLER-NAVELET; IMPACT FACTORS; NLO; QCD;
   DECORRELATION; PART
AB We determine both real and virtual next-to-leading order corrections to the gluon-induced forward jet vertex from the high energy effective action proposed by Lipatov. For these calculations we employ the same regularization and subtraction formalism developed in our previous work on the quark-initiated vertex. We find agreement with previous results in the literature. DOI: 10.1103/PhysRevD.87.076009
C1 [Chachamis, G.] UVEG, CSIC, Inst Fis Corpuscular, Valencia 46980, Spain.
   [Hentschinski, M.] Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA.
   [Madrigal Martinez, J. D.; Sabio Vera, A.] UAM, CSIC, Inst Fis Teor, Madrid 28049, Spain.
   [Madrigal Martinez, J. D.; Sabio Vera, A.] Univ Autonoma Madrid, Fac Ciencias, E-28049 Madrid, Spain.
RP Chachamis, G (reprint author), UVEG, CSIC, Inst Fis Corpuscular, Valencia 46980, Spain.
RI Hentschinski, Martin/A-9708-2015; Chachamis, Grigorios/B-3351-2017; 
OI Hentschinski, Martin/0000-0003-2922-7308; Chachamis,
   Grigorios/0000-0003-0347-0879; Madrigal, Jose Daniel/0000-0002-2453-0706
FU European Commission [LHCPhenoNet (PITN-GA- 2010-264564)]; MICINN
   [FPA2010-17747, FPA2011-23778, FPA2007-60323, CSD2007-00042 CPAN];
   Spanish MINECO's "Centro de Excelencia Severo Ochoa'' Programme
   [SEV-2012-0249]; German Academic Exchange Service (DAAD); U.S.
   Department of Energy [DE-AC02-98CH10886]; BNL "Laboratory Directed
   Research and Development'' [LDRD 12-034]; Research Executive Agency
   (REA) of the European Union [PIEF-GA-2011-298582]
FX We acknowledge partial support from the European Commission under
   Contract No. LHCPhenoNet (PITN-GA- 2010-264564), the Comunidad de Madrid
   through Proyecto HEPHACOS ESP-1473, MICINN (FPA2010-17747), and Spanish
   MINECO's "Centro de Excelencia Severo Ochoa'' Programme under Grant No.
   SEV-2012-0249. M. H. acknowledges support from the German Academic
   Exchange Service (DAAD), the U.S. Department of Energy under Contract
   No. DE-AC02-98CH10886 and a BNL "Laboratory Directed Research and
   Development'' Grant (No. LDRD 12-034). G. C. thanks the partial support
   of the Research Executive Agency (REA) of the European Union under the
   Grant Agreement No. PIEF-GA-2011-298582 and MICINN (No. FPA2011-23778,
   No. FPA2007-60323,and No. CSD2007-00042 CPAN).
NR 26
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U1 0
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PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1550-7998
EI 1550-2368
J9 PHYS REV D
JI Phys. Rev. D
PD APR 22
PY 2013
VL 87
IS 7
AR 076009
DI 10.1103/PhysRevD.87.076009
PG 11
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 129TW
UT WOS:000317866500004
ER

PT J
AU Engel, GP
   Lang, CB
   Mohler, D
   Schaefer, A
AF Engel, Georg P.
   Lang, C. B.
   Mohler, Daniel
   Schaefer, Andreas
CA BGR Bern-Graz-Regensburg Collabora
TI QCD with two light dynamical chirally improved quarks: Baryons
SO PHYSICAL REVIEW D
LA English
DT Article
ID QUANTUM-FIELD THEORIES; FINITE-VOLUME; HYPERFINE INTERACTIONS;
   SCATTERING MATRIX; ENERGY-SPECTRUM; HADRON MASSES; LATTICE QCD; FLAVOR
   QCD; STATES; MODEL
AB We present a study of baryon ground states and low lying excitations of nonstrange and strange baryons. The results are based on seven gauge field ensembles with two dynamical light chirally improved quarks corresponding to pion masses between 255 and 596 MeV and a strange valence quark with mass fixed by the Omega baryon. The lattice spacing varies between 0.1324 and 0.1398 fm. Given in lattice units, the bulk of our results are for size 16(3) x 32; for two ensembles with light pion masses (255 and 330 MeV) we also use 24(3) x 48 lattices and perform an infinite volume extrapolation. We derive energy levels for the spin 1/2 and 3/2 channels for both parities. In general, our results in the infinite volume limit compare well with experiment. We analyze the flavor symmetry content by identifying the singlet/octet/decuplet contributions of the resulting eigenstates. The ground states' compositions agree with quark model expectations. In some cases the excited states, however, disagree and we discuss possible reasons. DOI: 10.1103/PhysRevD.87.074504
C1 [Engel, Georg P.; Lang, C. B.] Graz Univ, Inst Phys, FB Theoret Phys, A-8010 Graz, Austria.
   [Engel, Georg P.] Univ Milano Bicocca, Dipartimento Fis, I-20126 Milan, Italy.
   [Engel, Georg P.] Ist Nazl Fis Nucl, Sez Milano Bicocca, I-20126 Milan, Italy.
   [Mohler, Daniel] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA.
   [Mohler, Daniel] TRIUMF, Vancouver, BC V6T 2A3, Canada.
   [BGR Bern-Graz-Regensburg Collabora] Univ Regensburg, Inst Theoret Phys, D-93040 Regensburg, Germany.
RP Engel, GP (reprint author), Graz Univ, Inst Phys, FB Theoret Phys, A-8010 Graz, Austria.
EM georg.engel@mib.infn.it; christian.lang@uni-graz.at; dmohler@fnal.gov;
   andreas.schaefer@physik.uni-regensburg.de
OI Mohler, Daniel/0000-0003-1852-9562
FU MIUR-PRIN [20093BM-NPR]; Natural Sciences and Engineering Research
   Council of Canada (NSERC); DFG [SFB/TR-55]; United States Department of
   Energy [De-AC02-07CH11359]
FX We would like to thank Elvira Gamiz, Christof Gattringer, Leonid Y.
   Glozman, Markus Limmer, Willibald Plessas, Helios Sanchis-Alepuz, Mario
   Schrock and Valentina Verduci for valuable discussions. The calculations
   have been performed on the SGI Altix 4700 of the Leibniz-Rechenzentrum
   Munich and on local clusters at UNI-IT at the University of Graz. We
   thank these institutions for providing support. G. P. E. was partially
   supported by the MIUR-PRIN Contract No. 20093BM-NPR. D. M. acknowledges
   support by the Natural Sciences and Engineering Research Council of
   Canada (NSERC) and G. P. E. and A. S. acknowledge support by the DFG
   project SFB/TR-55. Fermilab is operated by Fermi Research Alliance, LLC
   under Contract No. De-AC02-07CH11359 with the United States Department
   of Energy.
NR 62
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PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1550-7998
J9 PHYS REV D
JI Phys. Rev. D
PD APR 22
PY 2013
VL 87
IS 7
AR 074504
DI 10.1103/PhysRevD.87.074504
PG 19
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 129TW
UT WOS:000317866500003
ER

PT J
AU Liventsev, D
   Adachi, I
   Aihara, H
   Arinstein, K
   Asner, DM
   Aulchenko, V
   Aushev, T
   Bakich, AM
   Bay, A
   Belous, K
   Bhuyan, B
   Bondar, A
   Bonvicini, G
   Bozek, A
   Bracko, M
   Browder, TE
   Chang, P
   Chekelian, V
   Chen, A
   Cheon, BG
   Chistov, R
   Cho, K
   Chobanova, V
   Choi, SK
   Choi, Y
   Cinabro, D
   Dalseno, J
   Dolezal, Z
   Drasal, Z
   Drutskoy, A
   Dutta, D
   Eidelman, S
   Epifanov, D
   Esen, S
   Farhat, H
   Fast, JE
   Gaur, V
   Gabyshev, N
   Ganguly, S
   Gillard, R
   Goh, YM
   Golob, B
   Haba, J
   Hayasaka, K
   Hayashii, H
   Horii, Y
   Hoshi, Y
   Hou, WS
   Hyun, HJ
   Iijima, T
   Ishikawa, A
   Itagaki, K
   Itoh, R
   Iwasaki, Y
   Julius, T
   Kah, DH
   Kang, JH
   Kato, E
   Kawasaki, T
   Kiesling, C
   Kim, HJ
   Kim, HO
   Kim, JB
   Kim, KT
   Kim, MJ
   Kim, YJ
   Klucar, J
   Ko, BR
   Korpar, S
   Kouzes, RT
   Krizan, P
   Krokovny, P
   Kuhr, T
   Kumar, R
   Kumita, T
   Kuzmin, A
   Kwon, YJ
   Lee, SH
   Li, J
   Li, Y
   Libby, J
   Liu, C
   Liu, Y
   Liu, ZQ
   Louvot, R
   Matvienko, D
   Miyabayashi, K
   Miyata, H
   Mizuk, R
   Mohanty, GB
   Moll, A
   Muramatsu, N
   Nagasaka, Y
   Nakano, E
   Nakao, M
   Natkaniec, Z
   Nisar, NK
   Nishida, S
   Nitoh, O
   Nozaki, T
   Ogawa, S
   Ohshima, T
   Okuno, S
   Olsen, SL
   Ostrowicz, W
   Oswald, C
   Pakhlov, P
   Pakhlova, G
   Park, H
   Park, HK
   Pedlar, TK
   Pestotnik, R
   Petric, M
   Piilonen, LE
   Prothmann, K
   Ritter, M
   Rohrken, M
   Ryu, S
   Sahoo, H
   Saito, T
   Sakai, Y
   Sandilya, S
   Santel, D
   Santelj, L
   Sato, Y
   Schneider, O
   Schnell, G
   Schwanda, C
   Senyo, K
   Seon, O
   Sevior, ME
   Shapkin, M
   Shen, CP
   Shibata, TA
   Shiu, JG
   Shwartz, B
   Sibidanov, A
   Simon, F
   Smerkol, P
   Sohn, YS
   Sokolov, A
   Solovieva, E
   Staric, M
   Sumihama, M
   Sumiyoshi, T
   Tatishvili, G
   Teramoto, Y
   Tsuboyama, T
   Uchida, M
   Uehara, S
   Uglov, T
   Unno, Y
   Uno, S
   Ushiroda, Y
   Usov, Y
   Van Hulse, C
   Vanhoefer, P
   Varner, G
   Varvell, KE
   Vorobyev, V
   Wagner, MN
   Wang, CH
   Wang, MZ
   Wang, P
   Watanabe, M
   Watanabe, Y
   Williams, KM
   Won, E
   Yabsley, BD
   Yamamoto, H
   Yamashita, Y
   Zhang, CC
   Zhang, ZP
   Zhilich, V
   Zupanc, A
AF Liventsev, D.
   Adachi, I.
   Aihara, H.
   Arinstein, K.
   Asner, D. M.
   Aulchenko, V.
   Aushev, T.
   Bakich, A. M.
   Bay, A.
   Belous, K.
   Bhuyan, B.
   Bondar, A.
   Bonvicini, G.
   Bozek, A.
   Bracko, M.
   Browder, T. E.
   Chang, P.
   Chekelian, V.
   Chen, A.
   Cheon, B. G.
   Chistov, R.
   Cho, K.
   Chobanova, V.
   Choi, S. -K.
   Choi, Y.
   Cinabro, D.
   Dalseno, J.
   Dolezal, Z.
   Drasal, Z.
   Drutskoy, A.
   Dutta, D.
   Eidelman, S.
   Epifanov, D.
   Esen, S.
   Farhat, H.
   Fast, J. E.
   Gaur, V.
   Gabyshev, N.
   Ganguly, S.
   Gillard, R.
   Goh, Y. M.
   Golob, B.
   Haba, J.
   Hayasaka, K.
   Hayashii, H.
   Horii, Y.
   Hoshi, Y.
   Hou, W. -S.
   Hyun, H. J.
   Iijima, T.
   Ishikawa, A.
   Itagaki, K.
   Itoh, R.
   Iwasaki, Y.
   Julius, T.
   Kah, D. H.
   Kang, J. H.
   Kato, E.
   Kawasaki, T.
   Kiesling, C.
   Kim, H. J.
   Kim, H. O.
   Kim, J. B.
   Kim, K. T.
   Kim, M. J.
   Kim, Y. J.
   Klucar, J.
   Ko, B. R.
   Korpar, S.
   Kouzes, R. T.
   Krizan, P.
   Krokovny, P.
   Kuhr, T.
   Kumar, R.
   Kumita, T.
   Kuzmin, A.
   Kwon, Y. -J.
   Lee, S. -H.
   Li, J.
   Li, Y.
   Libby, J.
   Liu, C.
   Liu, Y.
   Liu, Z. Q.
   Louvot, R.
   Matvienko, D.
   Miyabayashi, K.
   Miyata, H.
   Mizuk, R.
   Mohanty, G. B.
   Moll, A.
   Muramatsu, N.
   Nagasaka, Y.
   Nakano, E.
   Nakao, M.
   Natkaniec, Z.
   Nisar, N. K.
   Nishida, S.
   Nitoh, O.
   Nozaki, T.
   Ogawa, S.
   Ohshima, T.
   Okuno, S.
   Olsen, S. L.
   Ostrowicz, W.
   Oswald, C.
   Pakhlov, P.
   Pakhlova, G.
   Park, H.
   Park, H. K.
   Pedlar, T. K.
   Pestotnik, R.
   Petric, M.
   Piilonen, L. E.
   Prothmann, K.
   Ritter, M.
   Roehrken, M.
   Ryu, S.
   Sahoo, H.
   Saito, T.
   Sakai, Y.
   Sandilya, S.
   Santel, D.
   Santelj, L.
   Sato, Y.
   Schneider, O.
   Schnell, G.
   Schwanda, C.
   Senyo, K.
   Seon, O.
   Sevior, M. E.
   Shapkin, M.
   Shen, C. P.
   Shibata, T. -A.
   Shiu, J. -G.
   Shwartz, B.
   Sibidanov, A.
   Simon, F.
   Smerkol, P.
   Sohn, Y. -S.
   Sokolov, A.
   Solovieva, E.
   Staric, M.
   Sumihama, M.
   Sumiyoshi, T.
   Tatishvili, G.
   Teramoto, Y.
   Tsuboyama, T.
   Uchida, M.
   Uehara, S.
   Uglov, T.
   Unno, Y.
   Uno, S.
   Ushiroda, Y.
   Usov, Y.
   Van Hulse, C.
   Vanhoefer, P.
   Varner, G.
   Varvell, K. E.
   Vorobyev, V.
   Wagner, M. N.
   Wang, C. H.
   Wang, M. -Z.
   Wang, P.
   Watanabe, M.
   Watanabe, Y.
   Williams, K. M.
   Won, E.
   Yabsley, B. D.
   Yamamoto, H.
   Yamashita, Y.
   Zhang, C. C.
   Zhang, Z. P.
   Zhilich, V.
   Zupanc, A.
CA Belle Collaboration
TI Search for heavy neutrinos at Belle
SO PHYSICAL REVIEW D
LA English
DT Article
ID SO(10) MODEL; MASS; DECAYS; IDENTIFICATION; LEPTONS; BEAM; KEKB
AB We report on a search for heavy neutrinos in B-meson decays. The results are obtained using a data sample that contains 772 x 10(6) B (B) over bar pairs collected at the Y(4S) resonance with the Belle detector at the KEKB asymmetric energy e(+)e(-) collider. No signal is observed and upper limits are set on mixing of heavy neutrinos with left-handed neutrinos of the Standard Model in the mass range 0.5-5.0 GeV/c(2). DOI: 10.1103/PhysRevD.87.071102
C1 [Schnell, G.; Van Hulse, C.] Univ Basque Country UPV EHU, Bilbao 48080, Spain.
   [Oswald, C.] Univ Bonn, D-53115 Bonn, Germany.
   [Arinstein, K.; Aulchenko, V.; Bondar, A.; Eidelman, S.; Epifanov, D.; Gabyshev, N.; Krokovny, P.; Kuzmin, A.; Matvienko, D.; Shwartz, B.; Usov, Y.; Vorobyev, V.; Zhilich, V.] Budker Inst Nucl Phys SB RAS, Novosibirsk 630090, Russia.
   [Arinstein, K.; Aulchenko, V.; Bondar, A.; Eidelman, S.; Epifanov, D.; Gabyshev, N.; Krokovny, P.; Kuzmin, A.; Matvienko, D.; Shwartz, B.; Usov, Y.; Vorobyev, V.; Zhilich, V.] Novosibirsk State Univ, Novosibirsk 630090, Russia.
   [Dolezal, Z.; Drasal, Z.] Charles Univ Prague, Fac Math & Phys, CR-12116 Prague, Czech Republic.
   [Esen, S.; Liu, Y.; Santel, D.] Univ Cincinnati, Cincinnati, OH 45221 USA.
   [Wagner, M. N.] Univ Giessen, D-35392 Giessen, Germany.
   [Sumihama, M.] Gifu Univ, Gifu 5011193, Japan.
   [Choi, S. -K.] Gyeongsang Natl Univ, Chinju 660701, South Korea.
   [Cheon, B. G.; Goh, Y. M.; Unno, Y.] Hanyang Univ, Seoul 133791, South Korea.
   [Browder, T. E.; Sahoo, H.; Varner, G.] Univ Hawaii, Honolulu, HI 96822 USA.
   [Liventsev, D.; Adachi, I.; Haba, J.; Itoh, R.; Iwasaki, Y.; Nakao, M.; Nishida, S.; Nozaki, T.; Sakai, Y.; Tsuboyama, T.; Uehara, S.; Uno, S.; Ushiroda, Y.] High Energy Accelerator Org KEK, Tsukuba, Ibaraki 3050801, Japan.
   [Nagasaka, Y.] Hiroshima Inst Technol, Hiroshima 7315193, Japan.
   [Schnell, G.] Ikerbasque, Bilbao 48011, Spain.
   [Bhuyan, B.; Dutta, D.] Indian Inst Technol Guwahati, Gauhati 781039, Assam, India.
   [Libby, J.] Indian Inst Technol Madras, Madras 600036, Tamil Nadu, India.
   [Liu, Z. Q.; Wang, P.; Zhang, C. C.] Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China.
   [Schwanda, C.] Inst High Energy Phys, A-1050 Vienna, Austria.
   [Belous, K.; Shapkin, M.; Sokolov, A.] Inst High Energy Phys, Protvino 142281, Russia.
   [Aushev, T.; Chistov, R.; Drutskoy, A.; Mizuk, R.; Pakhlov, P.; Pakhlova, G.; Solovieva, E.; Uglov, T.] Inst Theoret & Expt Phys, Moscow 117218, Russia.
   [Bracko, M.; Golob, B.; Klucar, J.; Korpar, S.; Krizan, P.; Pestotnik, R.; Petric, M.; Santelj, L.; Smerkol, P.; Staric, M.] Jozef Stefan Inst, Ljubljana 1000, Slovenia.
   [Okuno, S.; Watanabe, Y.] Kanagawa Univ, Yokohama, Kanagawa 2218686, Japan.
   [Kuhr, T.; Roehrken, M.; Zupanc, A.] Karlsruher Inst Technol, Inst Expt Kernphys, D-76131 Karlsruhe, Germany.
   [Cho, K.; Kim, Y. J.; Uglov, T.] Korea Inst Sci & Technol Informat, Taejon 305806, South Korea.
   [Kim, J. B.; Kim, K. T.; Ko, B. R.; Lee, S. -H.; Won, E.] Korea Univ, Seoul 136713, South Korea.
   [Hyun, H. J.; Kah, D. H.; Kim, H. J.; Kim, H. O.; Kim, M. J.; Park, H.; Park, H. K.] Kyungpook Natl Univ, Taegu 702701, South Korea.
   [Bay, A.; Louvot, R.; Schneider, O.] Ecole Polytech Fed Lausanne, CH-1015 Lausanne, Switzerland.
   [Golob, B.; Krizan, P.] Univ Ljubljana, Fac Math & Phys, Ljubljana 1000, Slovenia.
   [Pedlar, T. K.] Luther Coll, Decorah, IA 52101 USA.
   [Bracko, M.; Korpar, S.] Univ Maribor, SLO-2000 Maribor, Slovenia.
   [Chekelian, V.; Chobanova, V.; Dalseno, J.; Kiesling, C.; Moll, A.; Prothmann, K.; Ritter, M.; Simon, F.; Vanhoefer, P.] Max Planck Inst Phys & Astrophys, D-80805 Munich, Germany.
   [Julius, T.; Sevior, M. E.] Univ Melbourne, Sch Phys, Melbourne, Vic 3010, Australia.
   [Drutskoy, A.; Mizuk, R.; Pakhlov, P.] Moscow Phys Engn Inst, Moscow 115409, Russia.
   [Uglov, T.] Moscow Inst Phys & Technol, Dolgoprudnyi 141700, Moscow Region, Russia.
   [Iijima, T.; Ohshima, T.; Seon, O.; Shen, C. P.] Nagoya Univ, Grad Sch Sci, Nagoya, Aichi 4648602, Japan.
   [Hayasaka, K.; Horii, Y.; Iijima, T.] Nagoya Univ, Kobayashi Maskawa Inst, Nagoya, Aichi 4648602, Japan.
   [Hayashii, H.; Miyabayashi, K.] Nara Womens Univ, Nara 6308506, Japan.
   [Chen, A.] Natl Cent Univ, Chungli 32054, Taiwan.
   [Wang, C. H.] Natl United Univ, Miaoli 36003, Taiwan.
   [Chang, P.; Hou, W. -S.; Shiu, J. -G.; Wang, M. -Z.] Natl Taiwan Univ, Dept Phys, Taipei 10617, Taiwan.
   [Bozek, A.; Natkaniec, Z.; Ostrowicz, W.] H Niewodniczanski Inst Nucl Phys, PL-31342 Krakow, Poland.
   [Yamashita, Y.] Nippon Dent Univ, Niigata 9518580, Japan.
   [Kawasaki, T.; Miyata, H.; Watanabe, M.] Niigata Univ, Niigata 9502181, Japan.
   [Nakano, E.; Teramoto, Y.] Osaka City Univ, Osaka 5588585, Japan.
   [Asner, D. M.; Fast, J. E.; Kouzes, R. T.; Tatishvili, G.] Pacific NW Natl Lab, Richland, WA 99352 USA.
   [Kumar, R.] Panjab Univ, Chandigarh 160014, India.
   [Muramatsu, N.] Tohoku Univ, Res Ctr Electron Photon Sci, Sendai, Miyagi 9808578, Japan.
   [Liu, C.; Zhang, Z. P.] Univ Sci & Technol China, Hefei 230026, Peoples R China.
   [Li, J.; Olsen, S. L.; Ryu, S.] Seoul Natl Univ, Seoul 151742, South Korea.
   [Choi, Y.] Sungkyunkwan Univ, Suwon 440746, South Korea.
   [Bakich, A. M.; Sibidanov, A.; Varvell, K. E.; Yabsley, B. D.] Univ Sydney, Sch Phys, Sydney, NSW 2006, Australia.
   [Gaur, V.; Mohanty, G. B.; Nisar, N. K.; Sandilya, S.] Tata Inst Fundamental Res, Bombay 400005, Maharashtra, India.
   [Dalseno, J.; Moll, A.; Prothmann, K.; Simon, F.] Tech Univ Munich, D-85748 Garching, Germany.
   [Ogawa, S.] Toho Univ, Funabashi, Chiba 2748510, Japan.
   [Hoshi, Y.] Tohoku Gakuin Univ, Tagajo, Miyagi 9858537, Japan.
   [Ishikawa, A.; Itagaki, K.; Kato, E.; Saito, T.; Sato, Y.; Yamamoto, H.] Tohoku Univ, Sendai, Miyagi 9808578, Japan.
   [Aihara, H.] Univ Tokyo, Dept Phys, Tokyo 1130033, Japan.
   [Shibata, T. -A.; Uchida, M.] Tokyo Inst Technol, Tokyo 1528550, Japan.
   [Kumita, T.; Sumiyoshi, T.] Tokyo Metropolitan Univ, Tokyo 1920397, Japan.
   [Nitoh, O.] Tokyo Univ Agr & Technol, Tokyo 1848588, Japan.
   [Li, Y.; Piilonen, L. E.; Williams, K. M.] Virginia Polytech Inst & State Univ, CNP, Blacksburg, VA 24061 USA.
   [Bonvicini, G.; Cinabro, D.; Farhat, H.; Ganguly, S.; Gillard, R.] Wayne State Univ, Detroit, MI 48202 USA.
   [Senyo, K.] Yamagata Univ, Yamagata 9908560, Japan.
   [Kang, J. H.; Kwon, Y. -J.; Sohn, Y. -S.] Yonsei Univ, Seoul 120749, South Korea.
RP Liventsev, D (reprint author), High Energy Accelerator Org KEK, Tsukuba, Ibaraki 3050801, Japan.
RI Aihara, Hiroaki/F-3854-2010; Ishikawa, Akimasa/G-6916-2012; Nitoh,
   Osamu/C-3522-2013; Pakhlov, Pavel/K-2158-2013; Uglov,
   Timofey/B-2406-2014; Mizuk, Roman/B-3751-2014; Krokovny,
   Pavel/G-4421-2016; Chistov, Ruslan/B-4893-2014; Drutskoy,
   Alexey/C-8833-2016; Pakhlova, Galina/C-5378-2014; Solovieva,
   Elena/B-2449-2014
OI CHANG, PAO-TI/0000-0003-4064-388X; Aihara, Hiroaki/0000-0002-1907-5964;
   WANG, MIN-ZU/0000-0002-0979-8341; Pakhlov, Pavel/0000-0001-7426-4824;
   Uglov, Timofey/0000-0002-4944-1830; Krokovny, Pavel/0000-0002-1236-4667;
   Chistov, Ruslan/0000-0003-1439-8390; Drutskoy,
   Alexey/0000-0003-4524-0422; Pakhlova, Galina/0000-0001-7518-3022;
   Solovieva, Elena/0000-0002-5735-4059
FU Ministry of Education, Culture, Sports, Science, and Technology (MEXT)
   of Japan; Japan Society for the Promotion of Science (JSPS); Tau-Lepton
   Physics Research Center of Nagoya University; Australian Research
   Council and the Australian Department of Industry, Innovation, Science
   and Research; National Natural Science Foundation of China [10575109,
   10775142, 10875115, 10825524]; Ministry of Education, Youth and Sports
   of the Czech Republic [LA10033, MSM0021620859]; Department of Science
   and Technology of India; Istituto Nazionale di Fisica Nucleare of Italy;
   Ministry Education Science and Technology, National Research Foundation
   of Korea [2010-0021174, 2011-0029457, 2012-0008143, 2012R1A1A2008330];
   NRF [KRF-2011-0020333]; GSDC of the Korea Institute of Science and
   Technology Information; Polish Ministry of Science and Higher Education;
   National Science Center; Ministry of Education and Science of the
   Russian Federation; Russian Federal Agency for Atomic Energy; Atomic
   Energy; Swiss National Science Foundation; National Science Council;
   Ministry of Education of Taiwan; U.S. Department of Energy and the
   National Science Foundation; MEXT for Science Research in a Priority
   Area ("New Development of Flavor Physics''); JSPS for Creative
   Scientific Research ("Evolution of Tau-lepton Physics'')
FX We thank the KEKB group for the excellent operation of the accelerator;
   the KEK cryogenics group for the efficient operation of the solenoid;
   and the KEK computer group, the National Institute of Informatics, and
   the PNNL/EMSL computing group for valuable computing and SINET4 network
   support. We acknowledge support from the Ministry of Education, Culture,
   Sports, Science, and Technology (MEXT) of Japan, the Japan Society for
   the Promotion of Science (JSPS), and the Tau-Lepton Physics Research
   Center of Nagoya University; the Australian Research Council and the
   Australian Department of Industry, Innovation, Science and Research; the
   National Natural Science Foundation of China under Contracts No.
   10575109, No. 10775142, No. 10875115, and No. 10825524; the Ministry of
   Education, Youth and Sports of the Czech Republic under Contracts No.
   LA10033 and No. MSM0021620859; the Department of Science and Technology
   of India; the Istituto Nazionale di Fisica Nucleare of Italy; the BK21
   and WCU program of the Ministry Education Science and Technology,
   National Research Foundation of Korea Grants No. 2010-0021174, No.
   2011-0029457, No. 2012-0008143, No. 2012R1A1A2008330, BRL program under
   NRF Grant No. KRF-2011-0020333, and GSDC of the Korea Institute of
   Science and Technology Information; the Polish Ministry of Science and
   Higher Education and the National Science Center; the Ministry of
   Education and Science of the Russian Federation and the Russian Federal
   Agency for Atomic Energy; the for Atomic Energy; the Swiss National
   Science Foundation; the National Science Council and the Ministry of
   Education of Taiwan; and the U.S. Department of Energy and the National
   Science Foundation. This work is supported by a Grant-in-Aid from MEXT
   for Science Research in a Priority Area ("New Development of Flavor
   Physics''), and from JSPS for Creative Scientific Research ("Evolution
   of Tau-lepton Physics'').
NR 30
TC 22
Z9 22
U1 0
U2 16
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1550-7998
J9 PHYS REV D
JI Phys. Rev. D
PD APR 22
PY 2013
VL 87
IS 7
AR 071102
DI 10.1103/PhysRevD.87.071102
PG 7
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 129TW
UT WOS:000317866500001
ER

PT J
AU Pineda, A
   Segovia, J
AF Pineda, Antonio
   Segovia, J.
TI Improved determination of heavy quarkonium magnetic dipole transitions
   in potential nonrelativistic QCD
SO PHYSICAL REVIEW D
LA English
DT Article
ID QUANTUM CHROMODYNAMICS; PERTURBATIVE QCD; FIELD-THEORIES; SUM-RULES;
   SPECTROSCOPY; CHARMONIUM; DECAYS; J/PSI; ORDER; NRQCD
AB We compute the magnetic dipole transitions between low-lying heavy quarkonium states in a model-independent way. We use the weak-coupling version of the effective field theory named potential nonrelativistic QCD, with the static potential exactly incorporated in the leading order Hamiltonian. The precision we reach is k(gamma)(3)/m(2) x O(alpha(2)(s), nu(2)) and k(gamma)(3)/m(2) x O(nu(4)) for the allowed and forbidden transitions, respectively, where k(gamma) is the photon energy. We also resum the large logarithms associated with the heavy quark mass scale. The specific transitions considered in this paper are the following: Y(1S)->eta(b)(1S)gamma, J/psi(1S)->eta(c)(1S)gamma, h(b)(1P)->chi(b0,1) (1P)gamma, chi(b2)(1P)-> h(b)(1P)gamma, Y(2S)->eta(b)(2S)gamma, Y(2S)->eta(b)(1S)gamma and eta(b)(2S)-> Y(1S)gamma. The effect of the new power counting is found to be large, and the exact treatment of the soft logarithms of the static potential makes the factorization scale dependence much smaller. The convergence for the b (b) over bar ground state is quite good, and also quite reasonable for the c (c) over bar ground state and the b (b) over bar 1P state. For all of them we give solid predictions. For the 2S decays the situation is less conclusive, yet our results are perfectly consistent with existing data, as the previous disagreement with experiment for the Y(2S)->eta(b)(1S)gamma decay fades away. We also compute some expectation values like the electromagnetic radius, < r(2)>, or < p(2)>. We find < r(2)> to be nicely convergent in all cases, whereas the convergence of < p(2)> is typically worse. DOI: 10.1103/PhysRevD.87.074024
C1 [Pineda, Antonio] Univ Autonoma Barcelona, Fis Teor Grp, E-08193 Barcelona, Spain.
   [Segovia, J.] Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA.
RP Pineda, A (reprint author), Univ Autonoma Barcelona, Fis Teor Grp, E-08193 Barcelona, Spain.
FU European Community-Research Infrastructure Integrating Activity "Study
   of Strongly Interacting Matter'' (HadronPhysics3 Grant) [283286];
   Spanish Ingenio-Consolider Program CPAN [CSD2007-00042]; U.S. Department
   of Energy, Office of Nuclear Physics [DE-AC02-06CH11357]; 
   [FPA2010-16963];  [FPA2010-21750-C02-02];  [FPA2011-25948]; 
   [SGR2009-00894]
FX We gratefully acknowledge several clarifications from A. Vairo on some
   aspects of Ref. [18]. This work was partially supported by the Spanish
   Grants No. FPA2010-16963, No. FPA2010-21750-C02-02, and No.
   FPA2011-25948, by the Catalan Grant No. SGR2009-00894, by the European
   Community-Research Infrastructure Integrating Activity "Study of
   Strongly Interacting Matter'' (HadronPhysics3 Grant No. 283286), by the
   Spanish Ingenio-Consolider 2010 Program CPAN (CSD2007-00042) and also by
   the U.S. Department of Energy, Office of Nuclear Physics, under Contract
   No. DE-AC02-06CH11357.
NR 61
TC 12
Z9 12
U1 0
U2 2
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1550-7998
J9 PHYS REV D
JI Phys. Rev. D
PD APR 22
PY 2013
VL 87
IS 7
AR 074024
DI 10.1103/PhysRevD.87.074024
PG 19
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 129TW
UT WOS:000317866500002
ER

PT J
AU Adamson, P
   Anghel, I
   Backhouse, C
   Barr, G
   Bishai, M
   Blake, A
   Bock, GJ
   Bogert, D
   Cao, SV
   Cherdack, D
   Childress, S
   Coelho, JAB
   Corwin, L
   Cronin-Hennessy, D
   de Jong, JK
   Devan, AV
   Devenish, NE
   Diwan, MV
   Escobar, CO
   Evans, JJ
   Falk, E
   Feldman, GJ
   Frohne, MV
   Gallagher, HR
   Gomes, RA
   Goodman, MC
   Gouffon, P
   Graf, N
   Gran, R
   Grzelak, K
   Habig, A
   Hahn, SR
   Hartnell, J
   Hatcher, R
   Himmel, A
   Holin, A
   Hylen, J
   Irwin, GM
   Isvan, Z
   Jaffe, DE
   James, C
   Jensen, D
   Kafka, T
   Kasahara, SMS
   Koizumi, G
   Kordosky, M
   Kreymer, A
   Lang, K
   Ling, J
   Litchfield, PJ
   Lucas, P
   Mann, WA
   Marshak, ML
   Mathis, M
   Mayer, N
   Medeiros, MM
   Mehdiyev, R
   Meier, JR
   Messier, MD
   Michael, DG
   Miller, WH
   Mishra, SR
   Sher, SM
   Moore, CD
   Mualem, L
   Musser, J
   Naples, D
   Nelson, JK
   Newman, HB
   Nichol, RJ
   Nowak, JA
   Ochoa-Ricoux, JP
   O'Connor, J
   Oliver, WP
   Orchanian, M
   Pahlka, RB
   Paley, J
   Patterson, RB
   Pawloski, G
   Phan-Budd, S
   Plunkett, RK
   Qiu, X
   Radovic, A
   Rebel, B
   Rosenfeld, C
   Rubin, HA
   Sanchez, MC
   Schneps, J
   Schreckenberger, A
   Schreiner, P
   Sharma, R
   Sousa, A
   Tagg, N
   Talaga, RL
   Thomas, J
   Thomson, MA
   Tinti, G
   Toner, R
   Torretta, D
   Tzanakos, G
   Urheim, J
   Vahle, P
   Viren, B
   Weber, A
   Webb, RC
   White, C
   Whitehead, L
   Wojcicki, SG
   Yang, T
   Zwaska, R
AF Adamson, P.
   Anghel, I.
   Backhouse, C.
   Barr, G.
   Bishai, M.
   Blake, A.
   Bock, G. J.
   Bogert, D.
   Cao, S. V.
   Cherdack, D.
   Childress, S.
   Coelho, J. A. B.
   Corwin, L.
   Cronin-Hennessy, D.
   de Jong, J. K.
   Devan, A. V.
   Devenish, N. E.
   Diwan, M. V.
   Escobar, C. O.
   Evans, J. J.
   Falk, E.
   Feldman, G. J.
   Frohne, M. V.
   Gallagher, H. R.
   Gomes, R. A.
   Goodman, M. C.
   Gouffon, P.
   Graf, N.
   Gran, R.
   Grzelak, K.
   Habig, A.
   Hahn, S. R.
   Hartnell, J.
   Hatcher, R.
   Himmel, A.
   Holin, A.
   Hylen, J.
   Irwin, G. M.
   Isvan, Z.
   Jaffe, D. E.
   James, C.
   Jensen, D.
   Kafka, T.
   Kasahara, S. M. S.
   Koizumi, G.
   Kordosky, M.
   Kreymer, A.
   Lang, K.
   Ling, J.
   Litchfield, P. J.
   Lucas, P.
   Mann, W. A.
   Marshak, M. L.
   Mathis, M.
   Mayer, N.
   Medeiros, M. M.
   Mehdiyev, R.
   Meier, J. R.
   Messier, M. D.
   Michael, D. G.
   Miller, W. H.
   Mishra, S. R.
   Sher, S. Moed
   Moore, C. D.
   Mualem, L.
   Musser, J.
   Naples, D.
   Nelson, J. K.
   Newman, H. B.
   Nichol, R. J.
   Nowak, J. A.
   Ochoa-Ricoux, J. P.
   O'Connor, J.
   Oliver, W. P.
   Orchanian, M.
   Pahlka, R. B.
   Paley, J.
   Patterson, R. B.
   Pawloski, G.
   Phan-Budd, S.
   Plunkett, R. K.
   Qiu, X.
   Radovic, A.
   Rebel, B.
   Rosenfeld, C.
   Rubin, H. A.
   Sanchez, M. C.
   Schneps, J.
   Schreckenberger, A.
   Schreiner, P.
   Sharma, R.
   Sousa, A.
   Tagg, N.
   Talaga, R. L.
   Thomas, J.
   Thomson, M. A.
   Tinti, G.
   Toner, R.
   Torretta, D.
   Tzanakos, G.
   Urheim, J.
   Vahle, P.
   Viren, B.
   Weber, A.
   Webb, R. C.
   White, C.
   Whitehead, L.
   Wojcicki, S. G.
   Yang, T.
   Zwaska, R.
CA MINOS Collaboration
TI Electron Neutrino and Antineutrino Appearance in the Full MINOS Data
   Sample
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID LEPTON CHARGE
AB We report on v(e) and (v) over bar (e) appearance in v(mu) and (v) over bar (mu) beams using the full MINOS data sample. The comparison of these v(e) and (v) over bar (e) appearance data at a 735 km baseline with theta(13) measurements by reactor experiments probes delta, the theta(23) octant degeneracy, and the mass hierarchy. This analysis is the first use of this technique and includes the first accelerator long-baseline search for (v) over bar (mu) -> (v) over bar (e). Our data disfavor 31% (5%) of the three-parameter space defined by delta, the octant of the theta(23), and the mass hierarchy at the 68% (90%) C.L. We measure a value of 2sin(2)(2 theta(13))sin(2)(theta(23)) that is consistent with reactor experiments. DOI: 10.1103/PhysRevLett.110.171801
C1 [Anghel, I.; Goodman, M. C.; Paley, J.; Phan-Budd, S.; Sanchez, M. C.; Schreiner, P.; Talaga, R. L.] Argonne Natl Lab, Argonne, IL 60439 USA.
   [Tzanakos, G.] Univ Athens, Dept Phys, GR-15771 Athens, Greece.
   [Bishai, M.; Diwan, M. V.; Isvan, Z.; Jaffe, D. E.; Ling, J.; Viren, B.; Whitehead, L.] Brookhaven Natl Lab, Upton, NY 11973 USA.
   [Himmel, A.; Michael, D. G.; Mualem, L.; Newman, H. B.; Ochoa-Ricoux, J. P.; Orchanian, M.; Patterson, R. B.] CALTECH, Lauritsen Lab, Pasadena, CA 91125 USA.
   [Blake, A.; Thomson, M. A.; Toner, R.] Univ Cambridge, Cavendish Lab, Cambridge CB3 0HE, England.
   [Coelho, J. A. B.; Escobar, C. O.] Univ Estadual Campinas, IFGW UNICAMP, BR-13083970 Campinas, SP, Brazil.
   [Sousa, A.] Univ Cincinnati, Dept Phys, Cincinnati, OH 45221 USA.
   [Adamson, P.; Bock, G. J.; Bogert, D.; Childress, S.; Hahn, S. R.; Hatcher, R.; Hylen, J.; James, C.; Jensen, D.; Koizumi, G.; Kreymer, A.; Lucas, P.; Sher, S. Moed; Moore, C. D.; Pahlka, R. B.; Plunkett, R. K.; Rebel, B.; Sharma, R.; Torretta, D.; Zwaska, R.] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA.
   [Gomes, R. A.; Medeiros, M. M.] Univ Fed Goias, Inst Fis, BR-74001970 Goiania, Go, Brazil.
   [Feldman, G. J.; Sousa, A.; Toner, R.] Harvard Univ, Dept Phys, Cambridge, MA 02138 USA.
   [Frohne, M. V.] Coll Holy Cross, Notre Dame, IN 46556 USA.
   [Whitehead, L.] Univ Houston, Dept Phys, Houston, TX 77204 USA.
   [Graf, N.; Rubin, H. A.; Toner, R.] IIT, Dept Phys, Chicago, IL 60616 USA.
   [Corwin, L.; Mayer, N.; Messier, M. D.; Musser, J.; Urheim, J.] Indiana Univ, Bloomington, IN 47405 USA.
   [Anghel, I.; Sanchez, M. C.] Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA.
   [Evans, J. J.; Holin, A.; Nichol, R. J.; O'Connor, J.; Radovic, A.; Thomas, J.] UCL, Dept Phys & Astron, London WC1E 6BT, England.
   [Evans, J. J.] Univ Manchester, Sch Phys & Astron, Manchester M13 9PL, Lancs, England.
   [Cronin-Hennessy, D.; Kasahara, S. M. S.; Litchfield, P. J.; Marshak, M. L.; Meier, J. R.; Miller, W. H.; Nowak, J. A.; Pawloski, G.; Schreckenberger, A.] Univ Minnesota, Minneapolis, MN 55455 USA.
   [Gran, R.; Habig, A.] Univ Minnesota, Dept Phys, Duluth, MN 55812 USA.
   [Tagg, N.] Otterbein Univ, Westerville, OH 43081 USA.
   [Backhouse, C.; Barr, G.; de Jong, J. K.; Tinti, G.; Weber, A.] Univ Oxford, Subdept Particle Phys, Oxford OX1 3RH, England.
   [Isvan, Z.; Naples, D.] Univ Pittsburgh, Dept Phys & Astron, Pittsburgh, PA 15260 USA.
   [Litchfield, P. J.; Weber, A.] Rutherford Appleton Lab, Sci & Technol Facil Council, Didcot OX11 0QX, Oxon, England.
   [Gouffon, P.] Univ Sao Paulo, Inst Fis, BR-05315970 Sao Paulo, Brazil.
   [Mishra, S. R.; Rosenfeld, C.] Univ S Carolina, Dept Phys & Astron, Columbia, SC 29208 USA.
   [Irwin, G. M.; Pawloski, G.; Qiu, X.; Wojcicki, S. G.; Yang, T.] Stanford Univ, Dept Phys, Stanford, CA 94305 USA.
   [Devenish, N. E.; Falk, E.; Hartnell, J.] Univ Sussex, Dept Phys & Astron, Brighton BN1 9QH, E Sussex, England.
   [Webb, R. C.] Texas A&M Univ, Dept Phys, College Stn, TX 77843 USA.
   [Cao, S. V.; Lang, K.; Mehdiyev, R.] Univ Texas Austin, Dept Phys, Austin, TX 78712 USA.
   [Cherdack, D.; Coelho, J. A. B.; Gallagher, H. R.; Kafka, T.; Mann, W. A.; Mayer, N.; Oliver, W. P.; Schneps, J.] Tufts Univ, Dept Phys, Medford, MA 02155 USA.
   [Grzelak, K.] Univ Warsaw, Dept Phys, PL-00681 Warsaw, Poland.
   [Devan, A. V.; Kordosky, M.; Mathis, M.; Nelson, J. K.; Vahle, P.] Coll William & Mary, Dept Phys, Williamsburg, VA 23187 USA.
RP Adamson, P (reprint author), Fermilab Natl Accelerator Lab, POB 500, Batavia, IL 60510 USA.
RI Ling, Jiajie/I-9173-2014; Inst. of Physics, Gleb Wataghin/A-9780-2017;
   Tinti, Gemma/I-5886-2013; Gomes, Ricardo/B-6899-2008; Coelho,
   Joao/D-3546-2013; Evans, Justin/P-4981-2014; Gouffon,
   Philippe/I-4549-2012; Nowak, Jaroslaw/P-2502-2016
OI Cherdack, Daniel/0000-0002-3829-728X; Weber, Alfons/0000-0002-8222-6681;
   Ochoa-Ricoux, Juan Pedro/0000-0001-7376-5555; Cao,
   Son/0000-0002-9046-5324; Ling, Jiajie/0000-0003-2982-0670; Hartnell,
   Jeffrey/0000-0002-1744-7955; Gomes, Ricardo/0000-0003-0278-4876; Evans,
   Justin/0000-0003-4697-3337; Gouffon, Philippe/0000-0001-7511-4115;
   Nowak, Jaroslaw/0000-0001-8637-5433
FU U.S. DOE; U.K. STFC; U.S. NSF; state of Minnesota; University of
   Minnesota; University of Athens, Greece; Brazil's FAPESP; CNPq; CAPES
FX This work was supported by the U.S. DOE; the U.K. STFC; the U.S. NSF;
   the state and University of Minnesota; the University of Athens, Greece;
   and Brazil's FAPESP, CNPq, and CAPES. We are grateful to the Minnesota
   DNR, the crew of the Soudan Underground Laboratory, and the personnel of
   Fermilab for their contributions to this effort. We thank Texas Advanced
   Computing Center at The University of Texas at Austin for the provision
   of computing resources.
NR 29
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U1 2
U2 36
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD APR 22
PY 2013
VL 110
IS 17
AR 171801
DI 10.1103/PhysRevLett.110.171801
PG 6
WC Physics, Multidisciplinary
SC Physics
GA 129CK
UT WOS:000317815800004
ER

PT J
AU Yip, FL
   Rescigno, TN
   McCurdy, CW
   Martin, F
AF Yip, F. L.
   Rescigno, T. N.
   McCurdy, C. W.
   Martin, F.
TI Fully Differential Single-Photon Double Ionization of Neon and Argon
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID DOUBLE PHOTOIONIZATION; CROSS-SECTIONS; HELIUM; DEPENDENCE; ENERGY
AB Triply differential cross sections are calculated for one-photon double ionization of neon and argon at various photon energies and electron energy sharings by using a frozen-core treatment to represent the remaining electrons of the residual ion. Angular distributions agree well with all existing experimental data, showing that in spite of its simplicity the method can treat the double ionization of complex targets reliably. A comparison of the cross sections for helium, neon, and argon into the same final state symmetry at the same relative excess energies reveals a distinctive signature of the role of electron correlation in each target. DOI: 10.1103/PhysRevLett.110.173001
C1 [Yip, F. L.; Martin, F.] Univ Autonoma Madrid, Dept Quim, E-28049 Madrid, Spain.
   [Rescigno, T. N.; McCurdy, C. W.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
   [Rescigno, T. N.; McCurdy, C. W.] Ultrafast Xray Sci Lab, Berkeley, CA 94720 USA.
   [McCurdy, C. W.] Univ Calif Davis, Dept Chem, Davis, CA 95616 USA.
   [Martin, F.] Inst Madrileno Estudios Avanzados Nanociencia, Madrid 28049, Spain.
RP Yip, FL (reprint author), Calif Maritime Acad, Dept Sci & Math, Vallejo, CA 94590 USA.
EM fernando.martin@uam.es
RI Martin, Fernando/C-3972-2014
OI Martin, Fernando/0000-0002-7529-925X
FU MICINN [FIS2010-15127, ACI2008-0777, CSD 2007-00010]; ERA-Chemistry
   Project [PIM2010EEC-00751]; European grant MC-ITN CORINF; European COST
   Action [CM0702]; Advanced Grant of the European Research Council [XCHEM
   290853]; U.S. Department of Energy Office of Basic Energy Sciences,
   Division of Chemical Sciences [DE-AC02-05CH11231]
FX This work was accomplished with an allocation of computer time from Mare
   Nostrum BSC and NERSC and partially supported by the MICINN Projects No.
   FIS2010-15127, No. ACI2008-0777, and No. CSD 2007-00010, the
   ERA-Chemistry Project No. PIM2010EEC-00751, the European grant MC-ITN
   CORINF, the European COST Action CM0702, and the Advanced Grant of the
   European Research Council No. XCHEM 290853. C. W. M. and T. N. R.
   acknowledge support from U.S. Department of Energy Office of Basic
   Energy Sciences, Division of Chemical Sciences Contract No.
   DE-AC02-05CH11231. F. L. Y. acknowledges a postdoc contract from MICINN.
NR 19
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U1 1
U2 28
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD APR 22
PY 2013
VL 110
IS 17
AR 173001
DI 10.1103/PhysRevLett.110.173001
PG 5
WC Physics, Multidisciplinary
SC Physics
GA 129CK
UT WOS:000317815800006
PM 23679717
ER

PT J
AU Mao, S
   Yu, KH
   Chang, JB
   Steeber, DA
   Ocola, LE
   Chen, JH
AF Mao, Shun
   Yu, Kehan
   Chang, Jingbo
   Steeber, Douglas A.
   Ocola, Leonidas E.
   Chen, Junhong
TI Direct Growth of Vertically-oriented Graphene for Field-Effect
   Transistor Biosensor
SO SCIENTIFIC REPORTS
LA English
DT Article
ID OXIDE; FABRICATION; NANOSCALE; NANOTUBES; SHEETS
AB A sensitive and selective field-effect transistor (FET) biosensor is demonstrated using vertically-oriented graphene (VG) sheets labeled with gold nanoparticle (NP)-antibody conjugates. VG sheets are directly grown on the sensor electrode using a plasma-enhanced chemical vapor deposition (PECVD) method and function as the sensing channel. The protein detection is accomplished through measuring changes in the electrical signal from the FET sensor upon the antibody-antigen binding. The novel biosensor with unique graphene morphology shows high sensitivity (down to similar to 2 ng/ml or 13 pM) and selectivity towards specific proteins. The PECVD growth of VG presents a one-step and reliable approach to prepare graphene-based electronic biosensors.
C1 [Mao, Shun; Yu, Kehan; Chang, Jingbo; Chen, Junhong] Univ Wisconsin, Dept Mech Engn, Milwaukee, WI 53211 USA.
   [Steeber, Douglas A.] Univ Wisconsin, Dept Biol Sci, Milwaukee, WI 53211 USA.
   [Ocola, Leonidas E.] Argonne Natl Lab, Ctr Nanoscale Mat, Argonne, IL 60439 USA.
RP Chen, JH (reprint author), Univ Wisconsin, Dept Mech Engn, 3200 North Cramer St, Milwaukee, WI 53211 USA.
EM jhchen@uwm.edu
RI Chang, Jingbo/F-8088-2014; Yu, Kehan/H-3833-2011; MAO, SHUN/G-9966-2015;
   
OI Ocola, Leonidas/0000-0003-4990-1064
FU U.S. NSF [IIP-1128158]; University of Wisconsin-Milwaukee Research
   Foundation Bradley Catalyst Grant; U.S. Department of Energy
   [DE-AC02-06CH11357]
FX Financial support for this work was provided by a U.S. NSF grant
   (IIP-1128158) and a University of Wisconsin-Milwaukee Research
   Foundation Bradley Catalyst Grant. The authors thank Dr. Heather A. Owen
   for technical support with SEM and Professor Marija
   Gajdardziska-Josifovska for TEM access at the high-resolution TEM
   Laboratory at UWM. The e-beam lithography was performed at the Center
   for Nanoscale Materials of Argonne National Laboratory, which is
   supported by the U.S. Department of Energy (DE-AC02-06CH11357). The SEM
   imaging was conducted at the electron microscopy laboratory of UWM.
NR 39
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U1 14
U2 209
PU NATURE PUBLISHING GROUP
PI LONDON
PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND
SN 2045-2322
J9 SCI REP-UK
JI Sci Rep
PD APR 22
PY 2013
VL 3
AR 1696
DI 10.1038/srep01696
PG 6
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA 129BZ
UT WOS:000317814700008
PM 23603871
ER

PT J
AU She, CX
   Bryant, GW
   Demortiere, A
   Shevchenko, EV
   Pelton, M
AF She, Chunxing
   Bryant, Garnett W.
   Demortiere, Arnaud
   Shevchenko, Elena V.
   Pelton, Matthew
TI Controlling the spatial location of photoexcited electrons in
   semiconductor CdSe/CdS core/shell nanorods
SO PHYSICAL REVIEW B
LA English
DT Article
ID QUANTUM DOTS; ENERGY-RELAXATION; PHONON BOTTLENECK; CARRIER DYNAMICS;
   SEEDED GROWTH; BAND OFFSETS; NANOCRYSTALS; HETEROSTRUCTURES; MECHANISM;
   ROD
AB It is commonly assumed that after an electron-hole pair is created in a semiconductor by absorption of a photon the electron and hole rapidly relax to their respective lowest-energy states before recombining with one another. In semiconductor heterostructure nanocrystals, however, intraband relaxation can be inhibited to the point where recombination occurs primarily from an excited state. We demonstrate this effect using time-resolved optical measurements of CdSe/CdS core/shell nanorods. For nanorods with large CdSe cores, an electron photoexcited into the lowest-energy state in the core remains in the core, and an electron photoexcited into an excited state in the CdS shell remains in the shell, until the electron recombines with the hole. This provides a means of controlling the spatial location of photoexcited electrons by excitation energy. The control over electron localization is explained in terms of slow relaxation into the lowest-energy electron state in the nanorods, on time scales slower than electron-hole recombination. The observation of inhibited relaxation suggests that a simple picture of band alignment is insufficient for understanding charge separation in semiconductor heterostructures. DOI: 10.1103/PhysRevB.87.155427
C1 [She, Chunxing; Demortiere, Arnaud; Shevchenko, Elena V.; Pelton, Matthew] Argonne Natl Lab, Ctr Nanoscale Mat, Argonne, IL 60439 USA.
   [Bryant, Garnett W.] Natl Inst Stand & Technol, Quantum Measurement Div, Gaithersburg, MD 20899 USA.
   [Bryant, Garnett W.] Joint Quantum Inst, Gaithersburg, MD 20899 USA.
RP She, CX (reprint author), Argonne Natl Lab, Ctr Nanoscale Mat, 9700 S Cass Ave, Argonne, IL 60439 USA.
RI Pelton, Matthew/H-7482-2013; She, Chunxing/A-1839-2010
OI Pelton, Matthew/0000-0002-6370-8765; She, Chunxing/0000-0003-0598-6545
FU US Department of Energy, Office of Science, Office of Basic Energy
   Sciences, [DE-AC02-06CH11357]
FX We thank S. B. Darling, D. H. Potterveld, and R. J. Holt for initiating
   the project that led to this work, M. S. Hybersten for helpful
   discussions, and D. Gosztola for assistance with transient-absorption
   measurements. Use of the Center for Nanoscale Materials was supported by
   the US Department of Energy, Office of Science, Office of Basic Energy
   Sciences, under Contract No. DE-AC02-06CH11357. Any mention of product
   names in this paper is solely to specify how the work was done and does
   not constitute endorsement or validation by NIST.
NR 48
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U1 1
U2 53
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
EI 1550-235X
J9 PHYS REV B
JI Phys. Rev. B
PD APR 22
PY 2013
VL 87
IS 15
DI 10.1103/PhysRevB.87.155427
PG 8
WC Physics, Condensed Matter
SC Physics
GA 129FG
UT WOS:000317823800008
ER

PT J
AU Cowan, SR
   Wang, J
   Yi, J
   Lee, YJ
   Olson, DC
   Hsu, JWP
AF Cowan, Sarah R.
   Wang, Jian
   Yi, Juan
   Lee, Yun-Ju
   Olson, Dana C.
   Hsu, Julia W. P.
TI Intensity and wavelength dependence of bimolecular recombination in
   P3HT:PCBM solar cells: A white-light biased external quantum efficiency
   study
SO JOURNAL OF APPLIED PHYSICS
LA English
DT Article
ID OPEN-CIRCUIT VOLTAGE; PHOTOVOLTAIC DEVICES; SPECTRAL RESPONSIVITY;
   PHOTODETECTORS; PERFORMANCE; MORPHOLOGY; BLENDS
AB Bimolecular recombination is often a major photogenerated charge carrier loss mechanism in organic photovoltaic (OPV) devices, resulting in lower fill factor (FF) compared to inorganic devices. The recombination parameter alpha can be obtained from the power law fitting of short-circuit current (J(sc)) on illumination intensity (I), J(sc) alpha I-alpha, with alpha values less than unity taken as an indication of reduced photon-to-electron extraction efficiency and the presence of bimolecular recombination in OPV. Here, we show that this intensity-averaged measurement is inadequate. An external quantum efficiency (EQE) apparatus under constant white-light bias can be used to measure the recombination parameter (alpha(EQE*)) as a function of wavelength and carrier density (white-light intensity). Examining the dependence of alpha on background white-light bias intensity and excitation wavelength provides further understanding of photon-to-electron conversion loss mechanisms in P3HT:PCBM bulk heterojunction devices in standard and inverted architectures. In order to compare EQE and current-voltage (JV) measurements, we discuss the special case of devices exhibiting sub-linear intensity response (alpha < 1). Furthermore, we demonstrate several important advantages of the white-light biased EQE method of measuring bimolecular recombination compared to existing methods, including sensitivity in probing intensity-dependent recombination compared to steady-state JV measurements, the correlation of alpha(EQE*) and FF in devices, elucidation of recombination mechanisms through spectral dependence of carrier loss, and the robustness of alpha(EQE*) obtained via integration over the entire absorption region. Furthermore, this technique for measuring recombination is immediately accessible to the vast majority of researchers as the EQE apparatus is ubiquitous in PV research laboratories. (C) 2013 AIP Publishing LLC
C1 [Cowan, Sarah R.; Olson, Dana C.] Natl Renewable Energy Lab, Golden, CO 80401 USA.
   [Wang, Jian; Lee, Yun-Ju; Hsu, Julia W. P.] Univ Texas Dallas, Dept Mat Sci & Engn, Richardson, TX 75080 USA.
   [Yi, Juan] Univ Texas Dallas, Dept Phys, Richardson, TX 75080 USA.
RP Hsu, JWP (reprint author), Univ Texas Dallas, Dept Mat Sci & Engn, Richardson, TX 75080 USA.
EM jwhsu@utdallas.edu
RI Wang, Jian/G-7488-2011
OI Wang, Jian/0000-0002-4515-9782
FU University of Texas at Dallas; Office of Energy Efficiency and Renewable
   Energy (EERE) Postdoctoral Research Fellowship through the SunShot Solar
   Energy Technologies Program; U.S. Department of Energy (DOE) EERE
   [DOE-AC36-08GO28308]; National Renewable Energy Laboratory
FX We would like to thank Diego Barrera for the EQE measurements on the
   conventional devices, Rene Janssen for insightful discussion and
   references on differential spectral responsivity, and Keith Emery for
   helpful comments on the manuscript. D.C.O. and S.R.C. acknowledge
   significant scientific discussions with Dr. Stefan Oosterhout. The
   project was supported by the University of Texas at Dallas. J.W.P.H.
   acknowledges the Texas Instruments Distinguished Chair in
   Nanoelectronics. S.R.C. acknowledges funding from the Office of Energy
   Efficiency and Renewable Energy (EERE) Postdoctoral Research Fellowship
   through the SunShot Solar Energy Technologies Program. D.C.O.
   acknowledges funding from the U.S. Department of Energy (DOE) EERE under
   Contract No. DOE-AC36-08GO28308 with the National Renewable Energy
   Laboratory.
NR 39
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U1 2
U2 85
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
   MELVILLE, NY 11747-4501 USA
SN 0021-8979
J9 J APPL PHYS
JI J. Appl. Phys.
PD APR 21
PY 2013
VL 113
IS 15
AR 154504
DI 10.1063/1.4801920
PG 9
WC Physics, Applied
SC Physics
GA 134YJ
UT WOS:000318251400061
ER

PT J
AU Malik, VK
   Vo, CH
   Arenholz, E
   Scholl, A
   Young, AT
   Takamura, Y
AF Malik, Vivek K.
   Vo, Chi Hieu
   Arenholz, Elke
   Scholl, Andreas
   Young, Anthony T.
   Takamura, Yayoi
TI Magnetic correlation between La0.7Sr0.3MnO3 and La0.7Sr0.3CoO3 layers in
   artificial superlattices
SO JOURNAL OF APPLIED PHYSICS
LA English
DT Article
ID THIN-FILMS; MAGNETORESISTANCE; STATES
AB We have probed the interfacial magnetism between La0.7Sr0.3MnO3 (LSMO) and La0.7Sr0.3CoO3 (LSCO) layers in a [ LSMO(10 u.c.)/LSCO(10 u.c.)] X6 superlattice (SL) using X-ray magnetic circular dichroism and photoemission electron microscopy. Strong magnetic coupling exists between the LSMO and LSCO layers such that the magnetic domains in both layers have similar size and shape, and they flip their magnetization simultaneously. While 10 u.c. LSCO thin films show no evidence of ferromagnetism, the LSCO layer in the superlattice remains ferromagnetic. Such a modification of magnetic properties is proposed to occur due to strong correlations between the layers along the c-axis of the superlattice. (C) 2013 AIP Publishing LLC
C1 [Malik, Vivek K.; Vo, Chi Hieu; Takamura, Yayoi] Univ Calif Davis, Dept Chem Engn & Mat Sci, Davis, CA 95616 USA.
   [Arenholz, Elke; Scholl, Andreas; Young, Anthony T.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Adv Light Source, Berkeley, CA 94720 USA.
RP Malik, VK (reprint author), Univ Calif Davis, Dept Chem Engn & Mat Sci, Davis, CA 95616 USA.
RI Scholl, Andreas/K-4876-2012
FU Swiss National Science Foundation [PBFRP2-134402]; Defense Advanced
   Research Projects Agency [N66001-11-1-4135]; Director, Office of
   Science, Office of Basic Energy Sciences of the U. S. Department of
   Energy [DE-AC02-05CH11231]
FX This work was supported by the Swiss National Science Foundation (Grant
   PBFRP2-134402) and the Defense Advanced Research Projects Agency (Grant
   N66001-11-1-4135). The authors thank Peter Klavins for his assistance
   with the SQUID measurements and STAIB Instruments for their generous
   support with the RHEED system. The ALS was supported by the Director,
   Office of Science, Office of Basic Energy Sciences of the U.S.
   Department of Energy (Contract No. DE-AC02-05CH11231).
NR 23
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U1 3
U2 48
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
   MELVILLE, NY 11747-4501 USA
SN 0021-8979
J9 J APPL PHYS
JI J. Appl. Phys.
PD APR 21
PY 2013
VL 113
IS 15
AR 153907
DI 10.1063/1.4802670
PG 4
WC Physics, Applied
SC Physics
GA 134YJ
UT WOS:000318251400036
ER

PT J
AU Peppernick, SJ
   Joly, AG
   Beck, KM
   Hess, WP
AF Peppernick, Samuel J.
   Joly, Alan G.
   Beck, Kenneth M.
   Hess, Wayne P.
TI Plasmon-induced optical field enhancement studied by correlated scanning
   and photoemission electron microscopy
SO JOURNAL OF CHEMICAL PHYSICS
LA English
DT Article
ID SINGLE AU NANORODS; PHOTOELECTRON EMISSION; ELECTROMAGNETIC-FIELD; METAL
   NANOSTRUCTURES; RAMAN-SCATTERING; NEAR-FIELD; SURFACE; SILVER;
   SPECTROSCOPY; DYNAMICS
AB We use multi-photon photoemission electron microscopy (PEEM) to image the enhanced electric fields of silver nanoparticles supported on a silver thin film substrate. Electromagnetic field enhancement is measured by comparing the photoelectron yield of the nanoparticles with respect to the photoelectron yield of the surrounding silver thin film. We investigate the dependence of the photoelectron yield of the nanoparticle as a function of size and shape. Multi-photon PEEM results are presented for three average nanoparticle diameters: 34, 75, and 122 nm. The enhancement in photoelectron yield of single nanoparticles illuminated with femtosecond laser pulses (400 nm, similar to 3.1 eV) is found to be a factor of 10(2) to 10(3) times greater than that produced by the flat silver thin film. High-resolution, multi-photon PEEM images of single silver nanoparticles reveal that the greatest enhancement in photoelectron yield is localized at distinct regions near the surface of the nanoparticle whose magnitude and spatial extent is dependent on the incident electric field polarization. In conjunction with correlated scanning electron microscopy (SEM), nanoparticles that deviate from nominally spherical shapes are found to exhibit irregular spatial distributions in the multi-photon PEEM images that are correlated with the unique shape and topology of the nanoparticle. (C) 2013 AIP Publishing LLC. [http://dx.doi.org/10.1063/1.4799937]
C1 [Peppernick, Samuel J.; Joly, Alan G.; Beck, Kenneth M.; Hess, Wayne P.] Pacific NW Natl Lab, Div Phys Sci, Richland, WA 99352 USA.
RP Peppernick, SJ (reprint author), Pacific NW Natl Lab, Div Phys Sci, POB 999, Richland, WA 99352 USA.
FU U.S. Department of Energy (DOE), Office of Basic Energy Sciences,
   Division of Chemical Sciences, Geosciences Biosciences; Department of
   Energy's Office of Biological and Environmental Research
FX This work was supported by the U.S. Department of Energy (DOE), Office
   of Basic Energy Sciences, Division of Chemical Sciences, Geosciences &
   Biosciences. Pacific Northwest National Laboratory (PNNL) is a
   multiprogram national laboratory operated for DOE by Battelle. The
   research was performed using the EMSL, a national scientific user
   facility sponsored by the Department of Energy's Office of Biological
   and Environmental Research and located at Pacific Northwest National
   Laboratory.
NR 43
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U1 3
U2 48
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
   MELVILLE, NY 11747-4501 USA
SN 0021-9606
EI 1089-7690
J9 J CHEM PHYS
JI J. Chem. Phys.
PD APR 21
PY 2013
VL 138
IS 15
AR 154701
DI 10.1063/1.4799937
PG 10
WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical
SC Chemistry; Physics
GA 129CB
UT WOS:000317814900028
PM 23614430
ER

PT J
AU Singh, S
   Chiu, CC
   Reddy, AS
   de Pablo, JJ
AF Singh, Sadanand
   Chiu, Chi-cheng
   Reddy, Allam S.
   de Pablo, Juan J.
TI alpha-helix to beta-hairpin transition of human amylin monomer
SO JOURNAL OF CHEMICAL PHYSICS
LA English
DT Article
ID ISLET AMYLOID POLYPEPTIDE; MOLECULAR-DYNAMICS SIMULATIONS; FIBRIL
   FORMATION; FORCE-FIELD; FOLDING SIMULATIONS; DIABETES-MELLITUS;
   FULL-LENGTH; PROTEIN; PEPTIDES; STATES
AB The human islet amylin polypeptide is produced along with insulin by pancreatic islets. Under some circumstances, amylin can aggregate to form amyloid fibrils, whose presence in pancreatic cells is a common pathological feature of Type II diabetes. A growing body of evidence indicates that small, early stage aggregates of amylin are cytotoxic. A better understanding of the early stages of the amylin aggregation process and, in particular, of the nucleation events leading to fibril growth could help identify therapeutic strategies. Recent studies have shown that, in dilute solution, human amylin can adopt an alpha-helical conformation, a beta-hairpin conformation, or an unstructured coil conformation. While such states have comparable free energies, the beta-hairpin state exhibits a large propensity towards aggregation. In this work, we present a detailed computational analysis of the folding pathways that arise between the various conformational states of human amylin in water. A free energy surface for amylin in explicit water is first constructed by resorting to advanced sampling techniques. Extensive transition path sampling simulations are then employed to identify the preferred folding mechanisms between distinct minima on that surface. Our results reveal that the alpha-helical conformer of amylin undergoes a transformation into the beta-hairpin monomer through one of two mechanisms. In the first, misfolding begins through formation of specific contacts near the turn region, and proceeds via a zipping mechanism. In the second, misfolding occurs through an unstructured coil intermediate. The transition states for these processes are identified. Taken together, the findings presented in this work suggest that the inter-conversion of amylin between an alpha-helix and a beta-hairpin is an activated process and could constitute the nucleation event for fibril growth. (C) 2013 American Institute of Physics. [http://dx.doi.org/10.1063/1.4798460]
C1 [Singh, Sadanand; Reddy, Allam S.; de Pablo, Juan J.] Univ Wisconsin, Dept Chem & Biol Engn, Madison, WI 53706 USA.
   [Chiu, Chi-cheng; de Pablo, Juan J.] Univ Chicago, Inst Mol Engn, Chicago, IL 60637 USA.
   [de Pablo, Juan J.] Argonne Natl Lab, Argonne, IL 60439 USA.
RP Singh, S (reprint author), Univ Wisconsin, Dept Chem & Biol Engn, Madison, WI 53706 USA.
FU National Institutes of Health [1R01DK088184]
FX The authors are grateful to Jim Skinner and Marty Zanni for helpful
   discussions. This work was partially supported by the National
   Institutes of Health under Grant No. 1R01DK088184.
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PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
   MELVILLE, NY 11747-4501 USA
SN 0021-9606
J9 J CHEM PHYS
JI J. Chem. Phys.
PD APR 21
PY 2013
VL 138
IS 15
AR 155101
DI 10.1063/1.4798460
PG 10
WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical
SC Chemistry; Physics
GA 129CB
UT WOS:000317814900044
PM 23614446
ER

PT J
AU Hong, NN
   Crow, L
   Adenwalla, S
AF Hong, Nina
   Crow, L.
   Adenwalla, S.
TI Time-of-flight neutron detection using PECVD grown boron carbide diode
   detector
SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS
   SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
LA English
DT Article
DE Boron carbide; Neutron detection; Solid state neutron detector; Plasma
   enhanced chemical vapor deposition; Time of flight neutron detection
AB The development of novel neutron detectors requires an understanding of the entire neutron detection process, a process which depends strongly on material properties. Here we present accurate measurements of the neutron detection efficiency of an unenriched 640 nm thick boron carbide solid state neutron detector grown by plasma enhanced chemical vapor deposition as a function of the neutron wavelength at a time-of-flight facility. The data were compared to that obtained simultaneously by a calibrated nitrogen detector over the same wavelength range. The measured spectra of both detectors fit a Maxwell-Boltzmann wavelength distribution, thereby indicating that the boron carbide detector can be used as a reliable beam monitor. Measurements of the material properties (density, thickness and elemental composition) of the semiconducting boron carbide enable a precise calculation of the ideal expected neutron detection efficiency. The calculated neutron detection efficiency for the effective moderator temperature (obtained from a fit to the Maxwell-Boltzmann distribution) showed excellent agreement with the experimentally determined neutron detection efficiency of 1.25%. Higher efficiencies may be obtained either by increased film thickness and/or 100% B-10 enrichment of the boron carbide source molecule. (C) 2012 Elsevier B.V. All rights reserved.
C1 [Hong, Nina; Adenwalla, S.] Univ Nebraska, Dept Phys & Astron, Lincoln, NE 68588 USA.
   [Crow, L.] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
RP Hong, NN (reprint author), Univ Nebraska, Dept Phys & Astron, Lincoln, NE 68588 USA.
EM ninahong@huskers.unl.edu
FU NSF [NSF-0725881]; Basic Energy Science (BES) Program, Office of
   Science, U.S. Department of Energy [DE-AC05-000R22725]; UT-Battelle, LLC
FX The support of NSF through grant NSF-0725881 is gratefully acknowledged.
   The work at ORNL has been sponsored by the Basic Energy Science (BES)
   Program, Office of Science, U.S. Department of Energy under contract
   number DE-AC05-000R22725 with UT-Battelle, LLC. We thank Dr. Ravi Billa
   for his XRR experiments and data analysis.
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PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0168-9002
J9 NUCL INSTRUM METH A
JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc.
   Equip.
PD APR 21
PY 2013
VL 708
BP 19
EP 23
DI 10.1016/j.nima.2013.12.105
PG 5
WC Instruments & Instrumentation; Nuclear Science & Technology; Physics,
   Nuclear; Physics, Particles & Fields
SC Instruments & Instrumentation; Nuclear Science & Technology; Physics
GA 107CM
UT WOS:000316192300004
ER

PT J
AU Kang, M
   Bilheux, HZ
   Voisin, S
   Cheng, CL
   Perfect, E
   Horita, J
   Warren, JM
AF Kang, M.
   Bilheux, H. Z.
   Voisin, S.
   Cheng, C. L.
   Perfect, E.
   Horita, J.
   Warren, J. M.
TI Water calibration measurements for neutron radiography: Application to
   water content quantification in porous media
SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS
   SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
LA English
DT Article
DE Neutron radiography; Water calibration; Quantification; Porous media
ID X-RAY-ABSORPTION; SOIL-WATER; SCATTERING CORRECTIONS; TOMOGRAPHY; FLOW
AB Using neutron radiography, the measurement of water thickness was performed using aluminum (Al) water calibration cells at the High Flux Isotope Reactor (HEIR) Cold-Guide (CG) 1D neutron imaging facility at Oak Ridge National Laboratory, Oak Ridge, TN, USA. Calibration of water thickness is an important step to accurately measure water contents in samples of interest. Neutron attenuation by water does not vary linearly with thickness mainly due to beam hardening and scattering effects. Transmission measurements for known water thicknesses in water calibration cells allow proper correction of the underestimation of water content due to these effects.
   As anticipated, strong scattering effects were observed for water thicknesses greater than 0.2 cm when the water calibration cells were positioned close to the face of the detector/scintillator (0 and 2.4 cm away, respectively). The water calibration cells were also positioned 24 cm away from the detector face. These measurements resulted in less scattering and this position (designated as the sample position) was used for the subsequent experimental determination of the neutron attenuation coefficient for water.
   Neutron radiographic images of moist Flint sand in rectangular and cylindrical containers acquired at the sample position were used to demonstrate the applicability of the water calibration. Cumulative changes in the water volumes within the sand columns during monotonic drainage determined by neutron radiography were compared with those recorded by direct reading from a burette connected to a hanging water column. In general, the neutron radiography data showed very good agreement with those obtained volumetrically using the hanging water-column method. These results allow extension of the calibration equation to the quantification of unknown water contents within other samples of porous media. (C) 2013 Elsevier B.V. All rights reserved.
C1 [Kang, M.; Cheng, C. L.; Perfect, E.] Univ Tennessee, Dept Earth & Planetary Sci, Knoxville, TN 37996 USA.
   [Kang, M.; Bilheux, H. Z.] Oak Ridge Natl Lab, Chem & Engn Mat Div, Oak Ridge, TN USA.
   [Voisin, S.] Oak Ridge Natl Lab, Computat Sci & Engn Div, Oak Ridge, TN USA.
   [Horita, J.] Texas Tech Univ, Dept Geosci, Lubbock, TX 79409 USA.
   [Warren, J. M.] Oak Ridge Natl Lab, Div Environm Sci, Oak Ridge, TN 37831 USA.
RP Kang, M (reprint author), Univ Tennessee, Dept Earth & Planetary Sci, 1412 Circle Dr, Knoxville, TN 37996 USA.
EM kangm@ornl.gov; bilheuxhn@ornl.gov
RI Warren, Jeffrey/B-9375-2012; Cheng, Chu-Lin/G-3471-2013; Bilheux,
   Hassina/H-4289-2012
OI Warren, Jeffrey/0000-0002-0680-4697; Cheng, Chu-Lin/0000-0002-1900-463X;
   Bilheux, Hassina/0000-0001-8574-2449
FU Laboratory Directed Research and Development (LDRD) Program of Oak Ridge
   National Laboratory; Joint Directed Research and Development (JDRD)
   Program of the University of Tennessee UT-ORNL Science Alliance;
   UT-Battelle, LLC [DE-AC05-000R22725]; U.S. Department of Energy;
   Lakeisha Walker; Keely Willis; HFIR
FX This research was supported by the Laboratory Directed Research and
   Development (LDRD) Program of Oak Ridge National Laboratory and the
   Joint Directed Research and Development (JDRD) Program of the University
   of Tennessee UT-ORNL Science Alliance. The authors are thankful for
   contributions from Lakeisha Walker, Keely Willis, and the HFIR support
   groups, especially the HFIR Machine Shop, Brent Taylor, Gary Lynn, Lisa
   Fagan, Jaimie Werner, and the Instrument Development Group. The detector
   set-up was developed in collaboration with Prof. Dayakar Penumadu in the
   Department of Civil and Environmental Engineering at the University of
   Tennessee-Knoxville. This research at Oak Ridge National Laboratory's
   High Flux Isotope Reactor was sponsored by the Scientific User
   Facilities Division, Office of Basic Energy Sciences, U.S. Department of
   Energy, which is managed by UT-Battelle, LLC.; This manuscript has been
   authored by UT-Battelle, LLC, under Contract No. DE-AC05-000R22725 with
   the U.S. Department of Energy. The United States Government retains and
   the publisher, by accepting the article for publication, acknowledges
   that the United States Government retains a non-exclusive, paid-up,
   irrevocable, world-wide license to publish or reproduce the published
   form of this manuscript, or allow others to do so, for United States
   Government purposes.
NR 30
TC 18
Z9 18
U1 2
U2 47
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0168-9002
EI 1872-9576
J9 NUCL INSTRUM METH A
JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc.
   Equip.
PD APR 21
PY 2013
VL 708
BP 24
EP 31
DI 10.1016/j.nima.2012.12.112
PG 8
WC Instruments & Instrumentation; Nuclear Science & Technology; Physics,
   Nuclear; Physics, Particles & Fields
SC Instruments & Instrumentation; Nuclear Science & Technology; Physics
GA 107CM
UT WOS:000316192300005
ER

PT J
AU Beilicke, M
   DeGeronimo, G
   Dowkontt, P
   Garson, A
   Guo, Q
   Lee, K
   Martin, J
   Krawczynski, H
AF Beilicke, M.
   DeGeronimo, G.
   Dowkontt, P.
   Garson, A.
   Guo, Q.
   Lee, K.
   Martin, J.
   Krawczynski, H.
TI Performance of pixelated CZT detectors as a function of pixel and
   steering grid layout
SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS
   SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
LA English
DT Article
DE CdZnTe (CZT); Semiconductor detector; Hard X-ray astronomy;
   Pixelization; Performance; Steering grid
ID CDZNTE; ARRAYS
AB CdZnTe (CZT) is a wide band-gap II-VI semiconductor and can be used as detector for hard X-rays in astronomical instrumentation and for medical applications. Angular and energy resolutions, as well as detection efficiencies are crucial parameters to characterize the performance of CZT detectors. We studied the detector performance as a function of the geometrical layout of the anode pixel matrix for two 2 x 2 cm(2) CZT detectors with thicknesses of 2 mm and 5 mm, respectively. We varied the pixel sizes as well as their relative distances and quantified the energy resolutions and detection efficiencies. We also studied how a steering grid located between pixels affects the energy resolution and detection rate. The results of the study are presented and suggest that a steering grid substantially improves the high-energy performance of thin detectors-whereas thick detectors mainly benefit from larger pixel widths. (c) 2013 Elsevier B.V. All rights reserved.
C1 [Beilicke, M.; Dowkontt, P.; Garson, A.; Guo, Q.; Lee, K.; Martin, J.; Krawczynski, H.] Washington Univ, Dept Phys, St Louis, MO 63130 USA.
   [Beilicke, M.; Dowkontt, P.; Garson, A.; Guo, Q.; Lee, K.; Martin, J.; Krawczynski, H.] Washington Univ, McDonnell Ctr Space Sci, St Louis, MO 63130 USA.
   [DeGeronimo, G.] Brookhaven Natl Lab, Upton, NY 11973 USA.
RP Beilicke, M (reprint author), Washington Univ, Dept Phys, 1 Brookings Dr, St Louis, MO 63130 USA.
EM beilicke@physics.wustl.edu
FU NASA's Astrophysics Research and Analysis Program [NNX10AJ56G]; Office
   of High Energy Physics of the US Department of Energy
FX We acknowledge support by NASA's Astrophysics Research and Analysis
   Program (Grant NNX10AJ56G) and by the Office of High Energy Physics of
   the US Department of Energy.
NR 19
TC 0
Z9 0
U1 0
U2 10
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0168-9002
J9 NUCL INSTRUM METH A
JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc.
   Equip.
PD APR 21
PY 2013
VL 708
BP 88
EP 100
DI 10.1016/j.nima.2013.01.016
PG 13
WC Instruments & Instrumentation; Nuclear Science & Technology; Physics,
   Nuclear; Physics, Particles & Fields
SC Instruments & Instrumentation; Nuclear Science & Technology; Physics
GA 107CM
UT WOS:000316192300014
ER

PT J
AU Alvarez, V
   Borges, FIGM
   Carcel, S
   Castel, J
   Cebrian, S
   Cervera, A
   Conde, CAN
   Dafni, T
   Dias, THVT
   Diaz, J
   Egorov, M
   Esteve, R
   Evtoukhovitch, P
   Fernandes, LMP
   Ferrario, P
   Ferreira, AL
   Freitas, EDC
   Gehman, VM
   Gil, A
   Goldschmidt, A
   Gomez, H
   Gomez-Cadenas, JJ
   Gonzalez-Diaz, D
   Gutierrez, RM
   Hauptman, J
   Morata, JAH
   Herrera, DC
   Iguaz, FJ
   Irastorza, IG
   Jinete, MA
   Labarga, L
   Liubarsky, I
   Lopes, JAM
   Lorca, D
   Losada, M
   Luzon, G
   Mari, A
   Martin-Albo, J
   Martinez, A
   Miller, T
   Moiseenko, A
   Monrabal, F
   Monteiro, CMB
   Mora, FJ
   Moutinho, LM
   Vidal, JM
   da Luz, HN
   Navarro, G
   Nebot-Guinot, M
   Nygren, D
   Oliveira, CAB
   Palma, R
   Perez, J
   Aparicio, JLP
   Renner, J
   Ripoll, L
   Rodriguez, A
   Rodriguez, J
   Santos, FP
   dos Santos, JMF
   Segui, L
   Serra, L
   Shuman, D
   Simon, A
   Sofka, C
   Sorel, M
   Toledo, JF
   Tomas, A
   Torrent, J
   Tsamalaidze, Z
   Vazquez, D
   Veloso, JFCA
   Villar, JA
   Webb, RC
   White, JT
   Yahlali, N
AF Alvarez, V.
   Borges, F. I. G. M.
   Carcel, S.
   Castel, J.
   Cebrian, S.
   Cervera, A.
   Conde, C. A. N.
   Dafni, T.
   Dias, T. H. V. T.
   Diaz, J.
   Egorov, M.
   Esteve, R.
   Evtoukhovitch, P.
   Fernandes, L. M. P.
   Ferrario, P.
   Ferreira, A. L.
   Freitas, E. D. C.
   Gehman, V. M.
   Gil, A.
   Goldschmidt, A.
   Gomez, H.
   Gomez-Cadenas, J. J.
   Gonzalez-Diaz, D.
   Gutierrez, R. M.
   Hauptman, J.
   Hernando Morata, J. A.
   Herrera, D. C.
   Iguaz, F. J.
   Irastorza, I. G.
   Jinete, M. A.
   Labarga, L.
   Liubarsky, I.
   Lopes, J. A. M.
   Lorca, D.
   Losada, M.
   Luzon, G.
   Mari, A.
   Martin-Albo, J.
   Martinez, A.
   Miller, T.
   Moiseenko, A.
   Monrabal, F.
   Monteiro, C. M. B.
   Mora, F. J.
   Moutinho, L. M.
   Munoz Vidal, J.
   Natal da Luz, H.
   Navarro, G.
   Nebot-Guinot, M.
   Nygren, D.
   Oliveira, C. A. B.
   Palma, R.
   Perez, J.
   Perez Aparicio, J. L.
   Renner, J.
   Ripoll, L.
   Rodriguez, A.
   Rodriguez, J.
   Santos, F. P.
   dos Santos, J. M. F.
   Segui, L.
   Serra, L.
   Shuman, D.
   Simon, A.
   Sofka, C.
   Sorel, M.
   Toledo, J. F.
   Tomas, A.
   Torrent, J.
   Tsamalaidze, Z.
   Vazquez, D.
   Veloso, J. F. C. A.
   Villar, J. A.
   Webb, R. C.
   White, J. T.
   Yahlali, N.
TI Near-intrinsic energy resolution for 30-662 keV gamma rays in a high
   pressure xenon electroluminescent TPC
SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS
   SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
LA English
DT Article
DE Xenon; Energy resolution; High-pressure; TPC; Electroluminescence;
   Neutrinoless double beta decay
ID MONTE-CARLO-SIMULATION; DOUBLE-BETA DECAY; IONIZATION-CHAMBER;
   COMPRESSED XENON; ELECTRON-DRIFT; GAS; SPECTROMETER; ABSORPTION
AB We present the design, data and results from the NEXT prototype for Double Beta and Dark Matter (NEXT-DBDM) detector, a high-pressure gaseous natural xenon electroluminescent time projection chamber (TPC) that was built at the Lawrence Berkeley National Laboratory. It is a prototype of the planned NEXT-100 Xe-136 neutrino-less double beta decay (0 nu beta beta) experiment with the main objectives of demonstrating near-intrinsic energy resolution at energies up to 662 keV and of optimizing the NEXT-100 detector design and operating parameters. Energy resolutions of similar to 1% FWHM for 662 keV gamma rays were obtained at 10 and 15 atm and similar to 5% FWHM for 30 keV fluorescence xenon X-rays. These results demonstrate that 0.5% FWHM resolutions for the 2459 keV hypothetical neutrino-less double beta decay peak are realizable. This energy resolution is a factor 7-20 better than that of the current leading 0 nu beta beta experiments using liquid xenon and thus represents a significant advancement. We present also first results from a track imaging system consisting of 64 silicon photo-multipliers recently installed in NEXT-DBDM that, along with the excellent energy resolution, demonstrates the key functionalities required for the NEXT-100 0 nu beta beta search. (c) 2013 Elsevier B.V. All rights reserved.
C1 [Alvarez, V.; Carcel, S.; Cervera, A.; Diaz, J.; Ferrario, P.; Gil, A.; Gomez-Cadenas, J. J.; Liubarsky, I.; Lorca, D.; Martin-Albo, J.; Martinez, A.; Monrabal, F.; Munoz Vidal, J.; Nebot-Guinot, M.; Rodriguez, J.; Serra, L.; Simon, A.; Sorel, M.; Yahlali, N.] CSIC, Inst Fis Corpuscular IFIC, Valencia 46980, Spain.
   [Alvarez, V.; Carcel, S.; Cervera, A.; Diaz, J.; Ferrario, P.; Gil, A.; Gomez-Cadenas, J. J.; Liubarsky, I.; Lorca, D.; Martin-Albo, J.; Martinez, A.; Monrabal, F.; Munoz Vidal, J.; Nebot-Guinot, M.; Rodriguez, J.; Serra, L.; Simon, A.; Sorel, M.; Yahlali, N.] Univ Valencia, Valencia 46980, Spain.
   [Borges, F. I. G. M.; Conde, C. A. N.; Dias, T. H. V. T.; Fernandes, L. M. P.; Freitas, E. D. C.; Lopes, J. A. M.; Monteiro, C. M. B.; Natal da Luz, H.; Santos, F. P.; dos Santos, J. M. F.] Univ Coimbra, Dept Fis, P-3004516 Coimbra, Portugal.
   [Castel, J.; Cebrian, S.; Dafni, T.; Gomez, H.; Gonzalez-Diaz, D.; Herrera, D. C.; Iguaz, F. J.; Irastorza, I. G.; Luzon, G.; Rodriguez, A.; Segui, L.; Tomas, A.; Villar, J. A.] Univ Zaragoza, Lab Fis Nucl & Astroparticulas, E-50009 Zaragoza, Spain.
   [Esteve, R.; Mari, A.; Mora, F. J.; Toledo, J. F.] Univ Politecn Valencia, Inst Instrumentac Imagen Mol I3M, Valencia 46022, Spain.
   [Egorov, M.; Gehman, V. M.; Goldschmidt, A.; Miller, T.; Nygren, D.; Oliveira, C. A. B.; Renner, J.; Shuman, D.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
   [Evtoukhovitch, P.; Moiseenko, A.; Tsamalaidze, Z.] Joint Inst Nucl Res, Dubna 141980, Russia.
   [Moutinho, L. M.; Veloso, J. F. C. A.] Univ Aveiro, Inst Nanostruct Nanomodelling & Nanofabricat i3N, P-3810193 Aveiro, Portugal.
   [Gutierrez, R. M.; Jinete, M. A.; Losada, M.; Navarro, G.] Univ Antonio Narino, Ctr Invest Ciencias Basicas & Aplicadas, Bogota, Colombia.
   [Hauptman, J.] Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA.
   [Hernando Morata, J. A.; Vazquez, D.] Univ Santiago de Compostela, IGFAE, Santiago De Compostela 15782, Spain.
   [Labarga, L.] Univ Autonoma Madrid, Dept Fis Teor, E-28049 Madrid, Spain.
   [Ferreira, A. L.; Palma, R.; Perez Aparicio, J. L.] Univ Politecn Valencia, Dpto Mecan Medios Continuos & Teor Estruct, E-46071 Valencia, Spain.
   [Perez, J.] UAM CSIC, Inst Fis Teor, Madrid 28049, Spain.
   [Ripoll, L.; Torrent, J.] Univ Girona, Escola Politecn Super, Girona 17071, Spain.
   [Sofka, C.; Webb, R. C.; White, J. T.] Texas A&M Univ, Dept Phys & Astron, College Stn, TX 77843 USA.
RP Goldschmidt, A (reprint author), Univ Calif Berkeley, Lawrence Berkeley Natl Lab, 1Cyclotron Rd, Berkeley, CA 94720 USA.
EM agoldschmidt@lbl.gov
RI Irastorza, Igor/B-2085-2012; Gomez Cadenas, Juan Jose/L-2003-2014;
   Hernando Morata, Jose Angel/L-7642-2014; Gil Ortiz,
   Alejandro/M-1671-2014; YAHLALI, NADIA/L-1880-2014; Monrabal,
   Francesc/A-5880-2015; Ripoll, Lluis/A-8413-2015; dos Santos,
   Joaquim/B-3058-2015; Fernandes, Luis/E-2372-2011; Iguaz Gutierrez,
   Francisco Jose/F-4117-2016; Natal da Luz, Hugo/F-6460-2013; Gonzalez
   Diaz, Diego/K-7265-2014; veloso, joao/J-4478-2013; Moutinho,
   Luis/J-6021-2013; Diaz, Jose/B-3454-2012; Dafni, Theopisti /J-9646-2012;
   AMADE Research Group, AMADE/B-6537-2014; Balanzat, Josep
   Costa/C-1017-2014; matias-lopes, jose/H-6074-2012; Villar, Jose
   Angel/K-6630-2014
OI Santos, Filomena/0000-0002-0214-4185; Veloso, Joao/0000-0002-7107-7203;
   Palma, Roberto/0000-0002-4047-381X; Luzon Marco,
   Gloria/0000-0002-5352-1884; Toledo Alarcon, Jose
   Francisco/0000-0002-9782-4510; Freitas, Elisabete/0000-0001-8235-3229;
   Dias, Teresa/0000-0001-5101-4902; Borges Soares,
   Filipa/0000-0001-5790-173X; Ferreira, Antonio /0000-0002-8696-3590; dos
   Santos, Joaquim Marques Ferreira/0000-0002-8841-6523; Conde,
   Carlos/0000-0002-1387-2161; Monteiro, Cristina Maria
   Bernardes/0000-0002-1912-2804; Irastorza, Igor/0000-0003-1163-1687;
   Gomez Cadenas, Juan Jose/0000-0002-8224-7714; Hernando Morata, Jose
   Angel/0000-0002-8683-5142; Gil Ortiz, Alejandro/0000-0002-0852-412X;
   YAHLALI, NADIA/0000-0003-2184-0132; Monrabal,
   Francesc/0000-0002-4047-5620; Ripoll, Lluis/0000-0001-8194-5396;
   Fernandes, Luis/0000-0002-7061-8768; Iguaz Gutierrez, Francisco
   Jose/0000-0001-6327-9369; Natal da Luz, Hugo/0000-0003-1177-870X;
   Gonzalez Diaz, Diego/0000-0002-6809-5996; Moutinho,
   Luis/0000-0001-9074-4449; Diaz, Jose/0000-0002-7239-223X; Dafni,
   Theopisti /0000-0002-8921-910X; AMADE Research Group,
   AMADE/0000-0002-5778-3291; matias-lopes, jose/0000-0002-6366-2963;
   Villar, Jose Angel/0000-0003-0228-7589
FU Office of Science, Office of Basic Energy Sciences, of the U.S.
   Department of Energy [DE-AC02-05CH11231]; US DOE NNSA Stewardship
   Science Graduate Fellowship [DE-FC52-08NA28752]; Ministerio de Economia
   y Competitividad of Spain [CONSOLIDER-Ingenio 2010 CSD2008-0037,
   FPA2009-13697-C04-04]
FX We thank Adam Bernstein and Mike Heffner for the loan of the high
   pressure and storage vessels from LLNL (under LLNL loan 101-3026). This
   work was supported by the Director, Office of Science, Office of Basic
   Energy Sciences, of the U.S. Department of Energy under Contract No.
   DE-AC02-05CH11231. This work used resources of the National Energy
   Research Scientific Computing Center (NERSC). J. Renner (LBNL)
   acknowledges the support of a US DOE NNSA Stewardship Science Graduate
   Fellowship under contract no. DE-FC52-08NA28752. This work was also
   supported by the Ministerio de Economia y Competitividad of Spain under
   grants CONSOLIDER-Ingenio 2010 CSD2008-0037 (CUP) and
   FPA2009-13697-C04-04.
NR 39
TC 23
Z9 23
U1 1
U2 37
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0168-9002
J9 NUCL INSTRUM METH A
JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc.
   Equip.
PD APR 21
PY 2013
VL 708
BP 101
EP 114
DI 10.1016/j.nima.2012.12.123
PG 14
WC Instruments & Instrumentation; Nuclear Science & Technology; Physics,
   Nuclear; Physics, Particles & Fields
SC Instruments & Instrumentation; Nuclear Science & Technology; Physics
GA 107CM
UT WOS:000316192300015
ER

PT J
AU Mallik, C
   Lal, S
   Naja, M
   Chand, D
   Venkataramani, S
   Joshi, H
   Pant, P
AF Mallik, Chinmay
   Lal, Shyam
   Naja, Manish
   Chand, Duli
   Venkataramani, S.
   Joshi, Hema
   Pant, P.
TI Enhanced SO2 concentrations observed over northern India: role of
   long-range transport
SO INTERNATIONAL JOURNAL OF REMOTE SENSING
LA English
DT Article
ID SOLAR ULTRAVIOLET-RADIATION; OZONE MONITORING INSTRUMENT;
   SULFUR-DIOXIDE; AIR-POLLUTION; ATMOSPHERE; CLIMATE; DISTRIBUTIONS;
   VARIABILITY; DEPOSITION; PARTICLES
AB The combustion of fossil fuels (coal and petroleum products) constitutes a source of continuous release of anthropogenic SO2 into the atmosphere. Furthermore, natural sources such as volcanoes can inject large amounts of SO2 directly into the troposphere and sometimes even into the stratosphere. These event-based volcanic eruptions provide solitary opportunities to study the transport and transformation of atmospheric constituents. In this study, we present an episode of high SO2 concentration over northern India as a result of long-range transport from Africa using multiple satellite observations. Monthly averaged column SO2 values over the Indo-Gangetic Plain (IGP) were observed in the range of 0.60.9 Dobson units (DU) during November 2008 using observations from the Ozone Monitoring Instrument (OMI). These concentrations were conspicuously higher than the background concentrations (<0.3 DU) observed during 20052010 over this region. The columnar SO2 loadings were highest on 6 November over most of the IGP region and even exceeded 6 DU, a factor of 1020 higher than background levels in some places. These enhanced SO2 levels were not reciprocated in satellite-derived NO2 or CO columns, indicating transport from a non-anthropogenic SO2 source. As most of the local aerosols over the IGP region occur below 3 km, a well-separated layer at 45 km was observed from the Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observations (CALIPSO) satellite. Wind fields and back-trajectory analysis revealed a strong flow originating from the Dalaffilla volcanic eruption in Ethiopia during 46 November 2008. Although volcanic SO2 plumes have been extensively studied over many parts of Asia, Europe, and the USA, analysis of such events for the IGP region is being reported for the first time in this study.
C1 [Mallik, Chinmay; Lal, Shyam; Venkataramani, S.] Phys Res Lab, Space & Atmospher Sci Div, Ahmadabad 380009, Gujarat, India.
   [Naja, Manish; Joshi, Hema; Pant, P.] Aryabhatta Res Inst Observat Sci, Naini Tal, India.
   [Chand, Duli] Pacific NW Natl Lab, Atmospher Sci & Global Change Div, Richland, WA 99352 USA.
RP Mallik, C (reprint author), Phys Res Lab, Space & Atmospher Sci Div, Ahmadabad 380009, Gujarat, India.
EM chinmay@prl.res.in
OI Mallik, Chinmay/0000-0002-1428-9453
NR 47
TC 7
Z9 7
U1 0
U2 19
PU TAYLOR & FRANCIS LTD
PI ABINGDON
PA 4 PARK SQUARE, MILTON PARK, ABINGDON OX14 4RN, OXON, ENGLAND
SN 0143-1161
EI 1366-5901
J9 INT J REMOTE SENS
JI Int. J. Remote Sens.
PD APR 20
PY 2013
VL 34
IS 8
BP 2749
EP 2762
DI 10.1080/01431161.2012.750773
PG 14
WC Remote Sensing; Imaging Science & Photographic Technology
SC Remote Sensing; Imaging Science & Photographic Technology
GA 109UG
UT WOS:000316393800006
ER

PT J
AU Balbinot, E
   Santiago, BX
   da Costa, L
   Maia, MAG
   Majewski, SR
   Nidever, D
   Rocha-Pinto, HJ
   Thomas, D
   Wechsler, RH
   Yanny, B
AF Balbinot, E.
   Santiago, B. X.
   da Costa, L.
   Maia, M. A. G.
   Majewski, S. R.
   Nidever, D.
   Rocha-Pinto, H. J.
   Thomas, D.
   Wechsler, R. H.
   Yanny, B.
TI A NEW MILKY WAY HALO STAR CLUSTER IN THE SOUTHERN GALACTIC SKY
SO ASTROPHYSICAL JOURNAL
LA English
DT Article
DE galaxies: dwarf; globular clusters: general; Local Group
ID GLOBULAR-CLUSTERS; LUMINOSITY FUNCTION; DWARF GALAXY; SATELLITES;
   DISCOVERY; SAGITTARIUS; POPULATIONS; CLOUD; RADII; CORE
AB We report on the discovery of a new Milky Way (MW) companion stellar system located at (alpha(J2000), delta(J2000)) = (22(h)10(m)43(s).15, 14 degrees 56'58 ''.8). The discovery was made using the eighth data release of SDSS after applying an automated method to search for overdensities in the Baryon Oscillation Spectroscopic Survey footprint. Follow-up observations were performed using Canada-France-Hawaii-Telescope/MegaCam, which reveal that this system is comprised of an old stellar population, located at a distance of 31.9(-1.6)(+1.0) kpc, with a half-light radius of r(h) = 7.24(-1.29)(+1.94) pc and a concentration parameter of c = log(10)(r(t)/r(c)) = 1.55. A systematic isochrone fit to its color-magnitude diagram resulted in log (age yr(-1)) = 10.07(-0.03)(+0.05) and [Fe/H] = -1.58(-0.13)(+0.08). These quantities are typical of globular clusters in the MW halo. The newly found object is of low stellar mass, whose observed excess relative to the background is caused by 95 +/- 6 stars. The direct integration of its background decontaminated luminosity function leads to an absolute magnitude of M-V = -1.21 +/- 0.66. The resulting surface brightness is mu V = 25.90 mag arcsec(-2). Its position in the MV versus r(h) diagram lies close to AM4 and Koposov 1, which are identified as star clusters. The object is most likely a very faint star cluster-one of the faintest and lowest mass systems yet identified.
C1 [Balbinot, E.; Santiago, B. X.] Univ Fed Rio Grande do Sul, Inst Fis, BR-91501970 Porto Alegre, RS, Brazil.
   [Balbinot, E.; Santiago, B. X.; da Costa, L.; Maia, M. A. G.; Rocha-Pinto, H. J.] Lab Interinst E Astron LIneA, BR-20921400 Rio De Janeiro, RJ, Brazil.
   [da Costa, L.; Maia, M. A. G.] Observ Nacl, BR-22460040 Rio De Janeiro, RJ, Brazil.
   [Majewski, S. R.] Univ Virginia, Dept Astron, Charlottesville, VA 22904 USA.
   [Nidever, D.] Univ Michigan, Dept Astron, Ann Arbor, MI 48109 USA.
   [Rocha-Pinto, H. J.] Univ Fed Rio de Janeiro, Observ Valongo, BR-20080090 Rio De Janeiro, RJ, Brazil.
   [Thomas, D.] Univ Portsmouth, Inst Cosmol & Gravitat, Portsmouth PO1 2UP, Hants, England.
   [Wechsler, R. H.] SLAC Natl Accelerator Lab, Kavli Inst Particle Astrophys & Cosmol, Menlo Pk, CA 94025 USA.
   [Wechsler, R. H.] Stanford Univ, Dept Phys, Stanford, CA 94305 USA.
   [Yanny, B.] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA.
RP Balbinot, E (reprint author), Univ Fed Rio Grande do Sul, Inst Fis, CP 15051, BR-91501970 Porto Alegre, RS, Brazil.
EM balbinot@if.ufrgs.br
RI Balbinot, Eduardo/E-8019-2015; da Costa, Luiz Alberto/I-1326-2013;
   Rocha-Pinto, Helio/C-2719-2008
OI Balbinot, Eduardo/0000-0002-1322-3153; da Costa, Luiz
   Alberto/0000-0002-7731-277X; 
FU FINEp [01.09.0298.00 0351/09]; FAPERJ [E-26/102.358/2009,
   E-26/110.564/2010, E-26/111.786/2011]; CNPq [304.202/2008-8,
   400.006/2011-1]; Alfred P. Sloan Foundation; National Science
   Foundation; U. S. Department of Energy Office of Science
FX L.N.d.C. acknowledges the support of FINEp grant 01.09.0298.00 0351/09,
   FAPERJ grants E-26/102.358/2009, E-26/110.564/2010, and
   E-26/111.786/2011 and CNPq grants 304.202/2008-8 and 400.006/2011-1.;
   Funding for SDSS-III has been provided by the Alfred P. Sloan
   Foundation, the Participating Institutions, the National Science
   Foundation, and the U. S. Department of Energy Office of Science. The
   SDSS-III Web site is http://www. sdss3. org/. SDSS-III is managed by the
   Astrophysical Research Consortium for the Participating Institutions of
   the SDSS-III Collaboration including the University of Arizona, the
   Brazilian Participation Group, Brookhaven National Laboratory,
   University of Cambridge, Carnegie Mellon University, University of
   Florida, the French Participation Group, the German Participation Group,
   Harvard University, the Instituto de Astrofisica de Canarias, the
   Michigan State/Notre Dame/JINA Participation Group, Johns Hopkins
   University, Lawrence Berkeley National Laboratory, Max Planck Institute
   for Astrophysics, Max Planck Institute for Extraterrestrial Physics, New
   Mexico State University, New York University, Ohio State University,
   Pennsylvania State University, University of Portsmouth, Princeton
   University, the Spanish Participation Group, University of Tokyo,
   University of Utah, Vanderbilt University, University of Virginia,
   University of Washington, and Yale University.
NR 32
TC 19
Z9 19
U1 0
U2 6
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0004-637X
J9 ASTROPHYS J
JI Astrophys. J.
PD APR 20
PY 2013
VL 767
IS 2
AR 101
DI 10.1088/0004-637X/767/2/101
PG 6
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 122VR
UT WOS:000317346800004
ER

PT J
AU Guo, H
   Zehavi, I
   Zheng, Z
   Weinberg, DH
   Berlind, AA
   Blanton, M
   Chen, YM
   Eisenstein, DJ
   Ho, S
   Kazin, E
   Manera, M
   Maraston, C
   McBride, CK
   Nuza, SE
   Padmanabhan, N
   Parejko, JK
   Percival, WJ
   Ross, AJ
   Ross, NP
   Samushia, L
   Sanchez, AG
   Schlegel, DJ
   Schneider, DP
   Skibba, RA
   Swanson, MEC
   Tinker, JL
   Tojeiro, R
   Wake, DA
   White, M
   Bahcall, NA
   Bizyaev, D
   Brewington, H
   Bundy, K
   da Costa, LNA
   Ebelke, G
   Malanushenko, E
   Malanushenko, V
   Oravetz, D
   Rossi, G
   Simmons, A
   Snedden, S
   Streblyanska, A
   Thomas, D
AF Guo, Hong
   Zehavi, Idit
   Zheng, Zheng
   Weinberg, David H.
   Berlind, Andreas A.
   Blanton, Michael
   Chen, Yanmei
   Eisenstein, Daniel J.
   Ho, Shirley
   Kazin, Eyal
   Manera, Marc
   Maraston, Claudia
   McBride, Cameron K.
   Nuza, Sebastian E.
   Padmanabhan, Nikhil
   Parejko, John K.
   Percival, Will J.
   Ross, Ashley J.
   Ross, Nicholas P.
   Samushia, Lado
   Sanchez, Ariel G.
   Schlegel, David J.
   Schneider, Donald P.
   Skibba, Ramin A.
   Swanson, Molly E. C.
   Tinker, Jeremy L.
   Tojeiro, Rita
   Wake, David A.
   White, Martin
   Bahcall, Neta A.
   Bizyaev, Dmitry
   Brewington, Howard
   Bundy, Kevin
   da Costa, Luiz N. A.
   Ebelke, Garrett
   Malanushenko, Elena
   Malanushenko, Viktor
   Oravetz, Daniel
   Rossi, Graziano
   Simmons, Audrey
   Snedden, Stephanie
   Streblyanska, Alina
   Thomas, Daniel
TI THE CLUSTERING OF GALAXIES IN THE SDSS-III BARYON OSCILLATION
   SPECTROSCOPIC SURVEY: LUMINOSITY AND COLOR DEPENDENCE AND REDSHIFT
   EVOLUTION
SO ASTROPHYSICAL JOURNAL
LA English
DT Article
DE cosmology: observations; cosmology: theory; galaxies: distances and
   redshifts; galaxies: halos galaxies: statistics; large-scale structure
   of universe
ID DIGITAL SKY SURVEY; HALO OCCUPATION DISTRIBUTION; DARK-MATTER HALOES;
   2-POINT CORRELATION-FUNCTION; MEDIUM-BAND SURVEY; VLT DEEP SURVEY; RED
   GALAXIES; SPECTRAL TYPE; 2DF-SDSS LRG; ACOUSTIC-OSCILLATIONS
AB We measure the luminosity and color dependence and the redshift evolution of galaxy clustering in the Sloan Digital Sky Survey-III Baryon Oscillation Spectroscopic Survey Ninth Data Release. We focus on the projected two-point correlation function (2PCF) of subsets of its CMASS sample, which includes about 260,000 galaxies over similar to 3300 deg(2) in the redshift range 0.43 < z < 0.7. To minimize the selection effect on galaxy clustering, we construct well-defined luminosity and color subsamples by carefully accounting for the CMASS galaxy selection cuts. The 2PCF of the whole CMASS sample, if approximated by a power-law, has a correlation length of r(0) = 7.93 +/- 0.06 h(-1) Mpc and an index of gamma = 1.85 +/- 0.01. Clear dependences on galaxy luminosity and color are found for the projected 2PCF in all redshift bins, with more luminous and redder galaxies generally exhibiting stronger clustering and steeper 2PCF. The color dependence is also clearly seen for galaxies within the red sequence, consistent with the behavior of SDSS-II main sample galaxies at lower redshifts. At a given luminosity (k + e corrected), no significant evolution of the projected 2PCFs with redshift is detected for red sequence galaxies. We also construct galaxy samples of fixed number density at different redshifts, using redshiftdependent magnitude thresholds. The clustering of these galaxies in the CMASS redshift range is found to be consistent with that predicted by passive evolution. Our measurements of the luminosity and color dependence and redshift evolution of galaxy clustering will allow for detailed modeling of the relation between galaxies and dark matter halos and new constraints on galaxy formation and evolution.
C1 [Guo, Hong; Zehavi, Idit] Case Western Reserve Univ, Dept Astron, Cleveland, OH 44106 USA.
   [Guo, Hong; Zheng, Zheng] Univ Utah, Dept Phys & Astron, Salt Lake City, UT 84112 USA.
   [Weinberg, David H.] Ohio State Univ, Dept Astron, Columbus, OH 43210 USA.
   [Weinberg, David H.] Ohio State Univ, CCAPP, Columbus, OH 43210 USA.
   [Berlind, Andreas A.] Vanderbilt Univ, Dept Phys & Astron, Nashville, TN 37235 USA.
   [Blanton, Michael; Tinker, Jeremy L.] NYU, Ctr Cosmol & Particle Phys, New York, NY 10003 USA.
   [Chen, Yanmei] Nanjing Univ, Dept Astron, Nanjing 210093, Jiangsu, Peoples R China.
   [Eisenstein, Daniel J.; McBride, Cameron K.; Swanson, Molly E. C.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA.
   [Ho, Shirley; Ross, Nicholas P.; Schlegel, David J.; White, Martin] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
   [Ho, Shirley] Carnegie Mellon Univ, Dept Phys, Pittsburgh, PA 15213 USA.
   [Kazin, Eyal] Swinburne Univ Technol, Ctr Astrophys & Supercomp, Hawthorn, Vic 3122, Australia.
   [Manera, Marc; Maraston, Claudia; Percival, Will J.; Ross, Ashley J.; Samushia, Lado; Tojeiro, Rita; Thomas, Daniel] Univ Portsmouth, Inst Cosmol & Gravitat, Portsmouth PO1 3FX, Hants, England.
   [Maraston, Claudia; Thomas, Daniel] SEPnet, South East Phys Network, Highfield, England.
   [Nuza, Sebastian E.] Leibniz Inst Astrophys Potsdam AIP, D-14482 Potsdam, Germany.
   [Padmanabhan, Nikhil; Parejko, John K.] Yale Univ, Dept Phys, New Haven, CT 06520 USA.
   [Samushia, Lado] Ilia State Univ, Natl Abastumani Astrophys Observ, GE-1060 Tbilisi, Rep of Georgia.
   [Sanchez, Ariel G.] Max Planck Inst Extraterr Phys, D-85748 Garching, Germany.
   [Schneider, Donald P.] Penn State Univ, Dept Astron & Astrophys, University Pk, PA 16802 USA.
   [Schneider, Donald P.] Penn State Univ, Inst Gravitat & Cosmos, University Pk, PA 16802 USA.
   [Skibba, Ramin A.] Univ Calif San Diego, Ctr Astrophys & Space Sci, San Diego, CA 92093 USA.
   [Wake, David A.] Yale Univ, Dept Astron, New Haven, CT 06520 USA.
   [Wake, David A.] Univ Wisconsin, Dept Astron, Madison, WI 53706 USA.
   [White, Martin] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
   [White, Martin] Univ Calif Berkeley, Dept Astron, Berkeley, CA 94720 USA.
   [Bahcall, Neta A.] Princeton Univ Observ, Princeton, NJ 08544 USA.
   [Bizyaev, Dmitry; Brewington, Howard; Ebelke, Garrett; Malanushenko, Elena; Malanushenko, Viktor; Oravetz, Daniel; Simmons, Audrey; Snedden, Stephanie] Apache Point Observ, Sunspot, NM 88349 USA.
   [Bundy, Kevin] Univ Tokyo, Kavli Inst Phys & Math Universe, Kashiwa, Chiba 2778582, Japan.
   [da Costa, Luiz N. A.] Observ Nacl, BR-20921400 Rio De Janeiro, RJ, Brazil.
   [da Costa, Luiz N. A.] Lab Interinst E Astron LineA, BR-20921400 Rio De Janeiro, RJ, Brazil.
   [Rossi, Graziano] CEA, Ctr Saclay, Irfu SPP, F-91191 Gif Sur Yvette, France.
   [Rossi, Graziano] Univ Paris 07, Paris Ctr Cosmol Phys PCCP, F-75205 Paris, France.
   [Rossi, Graziano] Univ Paris 07, Lab APC, F-75205 Paris, France.
   [Streblyanska, Alina] Inst Astrofis Canarias, E-38200 Tenerife, Spain.
   [Streblyanska, Alina] Univ La Laguna, Dept Astrofis, E-38206 Tenerife, Spain.
RP Guo, H (reprint author), Case Western Reserve Univ, Dept Astron, Cleveland, OH 44106 USA.
RI Guo, Hong/A-8084-2010; da Costa, Luiz Alberto/I-1326-2013; Guo,
   Hong/J-5797-2015; White, Martin/I-3880-2015
OI da Costa, Luiz Alberto/0000-0002-7731-277X; Guo,
   Hong/0000-0003-4936-8247; White, Martin/0000-0001-9912-5070
FU NSF [AST-0907947, AST-1055081, AST-0901965]; Alfred P. Sloan Foundation;
   National Science Foundation; U. S. Department of Energy Office of
   Science
FX We thank Joanne Cohn, Peder Norberg, Rom ' an Scoccimarro, and Benjamin
   Weiner for helpful discussions. We thank the anonymous referee for
   useful comments. H. G., I. Z., and Z. Z. were supported by NSF grant
   AST-0907947. R. A. S. was supported by NSF grant AST-1055081 and MECS
   was supported by NSF grant AST-0901965.; Funding for SDSS-III has been
   provided by the Alfred P. Sloan Foundation, the Participating
   Institutions, the National Science Foundation, and the U. S. Department
   of Energy Office of Science. The SDSS-III Web site is http://www. sdss3.
   org/.; SDSS-III is managed by the Astrophysical Research Consortium for
   the Participating Institutions of the SDSS-III Collaboration including
   the University of Arizona, the Brazilian Participation Group, Brookhaven
   National Laboratory, University of Cambridge, Carnegie Mellon
   University, University of Florida, the French Participation Group, the
   German Participation Group, Harvard University, the Instituto de
   Astrofisica de Canarias, the Michigan State/Notre Dame/JINA
   Participation Group, Johns Hopkins University, Lawrence Berkeley
   National Laboratory, Max Planck Institute for Astrophysics, Max Planck
   Institute for Extraterrestrial Physics, New Mexico State University, New
   York University, Ohio State University, Pennsylvania State University,
   University of Portsmouth, Princeton University, the Spanish
   Participation Group, University of Tokyo, University of Utah, Vanderbilt
   University, University of Virginia, University of Washington, and Yale
   University.
NR 113
TC 32
Z9 32
U1 1
U2 9
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0004-637X
J9 ASTROPHYS J
JI Astrophys. J.
PD APR 20
PY 2013
VL 767
IS 2
AR 122
DI 10.1088/0004-637X/767/2/122
PG 19
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 122VR
UT WOS:000317346800025
ER

PT J
AU Hezaveh, YD
   Marrone, DP
   Fassnacht, CD
   Spilker, JS
   Vieira, JD
   Aguirre, JE
   Aird, KA
   Aravena, M
   Ashby, MLN
   Bayliss, M
   Benson, BA
   Bleem, LE
   Bothwell, M
   Brodwin, M
   Carlstrom, JE
   Chang, CL
   Chapman, SC
   Crawford, TM
   Crites, AT
   De Breuck, C
   de Haan, T
   Dobbs, MA
   Fomalont, EB
   George, EM
   Gladders, MD
   Gonzalez, AH
   Greve, TR
   Halverson, NW
   High, FW
   Holder, GP
   Holzapfel, WL
   Hoover, S
   Hrubes, JD
   Husband, K
   Hunter, TR
   Keisler, R
   Lee, AT
   Leitch, EM
   Lueker, M
   Luong-Van, D
   Malkan, M
   McIntyre, V
   McMahon, JJ
   Mehl, J
   Menten, KM
   Meyer, SS
   Mocanu, LM
   Murphy, EJ
   Natoli, T
   Padin, S
   Plagge, T
   Reichardt, CL
   Rest, A
   Ruel, J
   Ruhl, JE
   Sharon, K
   Schaffer, KK
   Shaw, L
   Shirokoff, E
   Stalder, B
   Staniszewski, Z
   Stark, AA
   Story, K
   Vanderlinde, K
   Weiss, A
   Welikala, N
   Williamson, R
AF Hezaveh, Y. D.
   Marrone, D. P.
   Fassnacht, C. D.
   Spilker, J. S.
   Vieira, J. D.
   Aguirre, J. E.
   Aird, K. A.
   Aravena, M.
   Ashby, M. L. N.
   Bayliss, M.
   Benson, B. A.
   Bleem, L. E.
   Bothwell, M.
   Brodwin, M.
   Carlstrom, J. E.
   Chang, C. L.
   Chapman, S. C.
   Crawford, T. M.
   Crites, A. T.
   De Breuck, C.
   de Haan, T.
   Dobbs, M. A.
   Fomalont, E. B.
   George, E. M.
   Gladders, M. D.
   Gonzalez, A. H.
   Greve, T. R.
   Halverson, N. W.
   High, F. W.
   Holder, G. P.
   Holzapfel, W. L.
   Hoover, S.
   Hrubes, J. D.
   Husband, K.
   Hunter, T. R.
   Keisler, R.
   Lee, A. T.
   Leitch, E. M.
   Lueker, M.
   Luong-Van, D.
   Malkan, M.
   McIntyre, V.
   McMahon, J. J.
   Mehl, J.
   Menten, K. M.
   Meyer, S. S.
   Mocanu, L. M.
   Murphy, E. J.
   Natoli, T.
   Padin, S.
   Plagge, T.
   Reichardt, C. L.
   Rest, A.
   Ruel, J.
   Ruhl, J. E.
   Sharon, K.
   Schaffer, K. K.
   Shaw, L.
   Shirokoff, E.
   Stalder, B.
   Staniszewski, Z.
   Stark, A. A.
   Story, K.
   Vanderlinde, K.
   Weiss, A.
   Welikala, N.
   Williamson, R.
TI ALMA OBSERVATIONS OF SPT-DISCOVERED, STRONGLY LENSED, DUSTY,
   STAR-FORMING GALAXIES
SO ASTROPHYSICAL JOURNAL
LA English
DT Article
DE galaxies: high-redshift; galaxies: starburst; gravitational lensing:
   strong; techniques: interferometric
ID SOUTH-POLE TELESCOPE; SUBMILLIMETER GALAXIES; NUMBER COUNTS;
   HIGH-REDSHIFT; INTERSTELLAR-MEDIUM; INFRARED GALAXIES; GAS FRACTIONS;
   MOLECULAR GAS; FIELD; EVOLUTION
AB We present Atacama Large Millimeter/submillimeter Array (ALMA) 860 mu m imaging of four high-redshift (z = 2.8-5.7) dusty sources that were detected using the South Pole Telescope (SPT) at 1.4 mm and are not seen in existing radio to far-infrared catalogs. At 1 ''.5 resolution, the ALMA data reveal multiple images of each submillimeter source, separated by 1 ''-3 '', consistent with strong lensing by intervening galaxies visible in near-IR imaging of these sources. We describe a gravitational lens modeling procedure that operates on the measured visibilities and incorporates self-calibration-like antenna phase corrections as part of the model optimization, which we use to interpret the source structure. Lens models indicate that SPT0346-52, located at z = 5.7, is one of the most luminous and intensely star-forming sources in the universe with a lensing corrected FIR luminosity of 3.7 x 10(13) L circle dot and star formation surface density of 4200M circle dot yr(-1) kpc(-2). We find magnification factors of 5 to 22, with lens Einstein radii of 1 ''.1-2 ''.0 and Einstein enclosed masses of 1.6-7.2 x 10(11)M circle dot. These observations confirm the lensing origin of these objects, allow us to measure their intrinsic sizes and luminosities, and demonstrate the important role that ALMA will play in the interpretation of lensed submillimeter sources.
C1 [Hezaveh, Y. D.; de Haan, T.; Dobbs, M. A.; Holder, G. P.; Shaw, L.; Vanderlinde, K.] McGill Univ, Dept Phys, Montreal, PQ H3A 2T8, Canada.
   [Marrone, D. P.; Spilker, J. S.; Bothwell, M.] Univ Arizona, Steward Observ, Tucson, AZ 85721 USA.
   [Fassnacht, C. D.] Univ Calif Davis, Dept Phys, Davis, CA 95616 USA.
   [Vieira, J. D.; Lueker, M.; Padin, S.; Shirokoff, E.; Staniszewski, Z.] CALTECH, Pasadena, CA 91125 USA.
   [Aguirre, J. E.] Univ Penn, Philadelphia, PA 19104 USA.
   [Aird, K. A.; Hrubes, J. D.; Luong-Van, D.] Univ Chicago, Chicago, IL 60637 USA.
   [Aravena, M.; De Breuck, C.] European So Observ, D-85748 Garching, Germany.
   [Ashby, M. L. N.; Bayliss, M.; Stalder, B.; Stark, A. A.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA.
   [Bayliss, M.; Ruel, J.] Harvard Univ, Dept Phys, Cambridge, MA 02138 USA.
   [Benson, B. A.; Bleem, L. E.; Carlstrom, J. E.; Chang, C. L.; Crawford, T. M.; Crites, A. T.; Gladders, M. D.; High, F. W.; Hoover, S.; Keisler, R.; Leitch, E. M.; McMahon, J. J.; Mehl, J.; Meyer, S. S.; Mocanu, L. M.; Natoli, T.; Padin, S.; Plagge, T.; Sharon, K.; Schaffer, K. K.; Story, K.; Williamson, R.] Univ Chicago, Kavli Inst Cosmol Phys, Chicago, IL 60637 USA.
   [Benson, B. A.; Carlstrom, J. E.; Chang, C. L.; Hoover, S.; McMahon, J. J.; Meyer, S. S.] Univ Chicago, Enrico Fermi Inst, Chicago, IL 60637 USA.
   [Bleem, L. E.; Carlstrom, J. E.; Keisler, R.; Meyer, S. S.; Natoli, T.; Story, K.] Univ Chicago, Dept Phys, Chicago, IL 60637 USA.
   [Brodwin, M.] Univ Missouri, Dept Phys & Astron, Kansas City, MO 64110 USA.
   [Carlstrom, J. E.; Crawford, T. M.; Crites, A. T.; Gladders, M. D.; High, F. W.; Leitch, E. M.; Mehl, J.; Meyer, S. S.; Mocanu, L. M.; Padin, S.; Plagge, T.; Sharon, K.; Williamson, R.] Univ Chicago, Dept Astron & Astrophys, Chicago, IL 60637 USA.
   [Carlstrom, J. E.; Chang, C. L.] Argonne Natl Lab, Argonne, IL 60439 USA.
   [Chapman, S. C.] Dalhousie Univ, Dept Phys & Atmospher Sci, Halifax, NS B3H 3J5, Canada.
   [Chapman, S. C.; Husband, K.] Univ Cambridge, Inst Astron, Cambridge CB3 0HA, England.
   [Fomalont, E. B.; Hunter, T. R.] Natl Radio Astron Observ, Charlottesville, VA 22903 USA.
   [George, E. M.; Holzapfel, W. L.; Lee, A. T.; Reichardt, C. L.] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
   [Gonzalez, A. H.] Univ Florida, Dept Astron, Gainesville, FL 32611 USA.
   [Greve, T. R.] UCL, Dept Phys & Astron, London WC1E 6BT, England.
   [Halverson, N. W.] Univ Colorado, Dept Astrophys & Planetary Sci, Boulder, CO 80309 USA.
   [Halverson, N. W.] Univ Colorado, Dept Phys, Boulder, CO 80309 USA.
   [Lee, A. T.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Phys, Berkeley, CA 94720 USA.
   [Malkan, M.] Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA 90095 USA.
   [McIntyre, V.] CSIRO, Australia Telescope Natl Facil, Epping, NSW 1710, Australia.
   [McMahon, J. J.] Univ Michigan, Dept Phys, Ann Arbor, MI 48109 USA.
   [Menten, K. M.; Weiss, A.] Max Planck Inst Radioastron, D-53121 Bonn, Germany.
   [Murphy, E. J.] Observ Carnegie Inst Sci, Pasadena, CA 91101 USA.
   [Rest, A.] Space Telescope Sci Inst, Baltimore, MD 21218 USA.
   [Ruhl, J. E.; Staniszewski, Z.] Case Western Reserve Univ, Dept Phys, Ctr Educ & Res Cosmol & Astrophys, Cleveland, OH 44106 USA.
   [Sharon, K.] Univ Michigan, Dept Astron, Ann Arbor, MI 48109 USA.
   [Schaffer, K. K.] Sch Art Inst Chicago, Liberal Arts Dept, Chicago, IL 60603 USA.
   [Shaw, L.] Yale Univ, Dept Phys, New Haven, CT 06520 USA.
   [Welikala, N.] Univ Paris 11, Inst Astrophys Spatiale, F-91405 Orsay, France.
   [Welikala, N.] CNRS, F-91405 Orsay, France.
RP Hezaveh, YD (reprint author), McGill Univ, Dept Phys, 3600 Rue Univ, Montreal, PQ H3A 2T8, Canada.
RI Aravena, Manuel/O-2361-2014; Williamson, Ross/H-1734-2015; Holzapfel,
   William/I-4836-2015; 
OI Williamson, Ross/0000-0002-6945-2975; Marrone,
   Daniel/0000-0002-2367-1080; Aird, Kenneth/0000-0003-1441-9518;
   Reichardt, Christian/0000-0003-2226-9169; De Breuck,
   Carlos/0000-0002-6637-3315; Hunter, Todd/0000-0001-6492-0090; Stark,
   Antony/0000-0002-2718-9996
FU National Science Foundation [ANT-0638937]; Kavli Foundation; Gordon and
   Betty Moore Foundation; NASA from the Space Telescope Science Institute
   [HST-GO-12659]; NSERC; CRC program; CIfAR; FQRNT through International
   Training Program and Doctoral Research scholarships; Science and
   Technologies Facilities Council;  [PHY-1125897]
FX The SPT is supported by the National Science Foundation through grant
   ANT-0638937, with partial support through PHY-1125897, the Kavli
   Foundation, and the Gordon and Betty Moore Foundation. This paper makes
   use of the following ALMA data: ADS/JAO. ALMA #2011.0.00957. S and
   #2011.0.00958. S. ALMA is a partnership of ESO (representing its member
   states), NSF (USA) and NINS (Japan), together with NRC (Canada) and NSC
   and ASIAA (Taiwan), in cooperation with the Republic of Chile. The Joint
   ALMA Observatory is operated by ESO, AUI/NRAO and NAOJ. The National
   Radio Astronomy Observatory is a facility of the National Science
   Foundation operated under cooperative agreement by Associated
   Universities, Inc. Partial support for this work was provided by NASA
   through grant HST-GO-12659 from the Space Telescope Science Institute
   and an award for Herschel analysis issued by JPL/Caltech for
   OT2_jvieira_5. Work at McGill is supported by NSERC, the CRC program,
   and CIfAR. Y.D.H. acknowledges the support of FQRNT through
   International Training Program and Doctoral Research scholarships.
   T.R.G. acknowledges support from the Science and Technologies Facilities
   Council.
NR 62
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PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0004-637X
EI 1538-4357
J9 ASTROPHYS J
JI Astrophys. J.
PD APR 20
PY 2013
VL 767
IS 2
AR 132
DI 10.1088/0004-637X/767/2/132
PG 11
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 122VR
UT WOS:000317346800035
ER

PT J
AU Saul, L
   Bzowski, M
   Fuselier, S
   Kubiak, M
   McComas, D
   Mobius, E
   Sokol, J
   Rodriguez, D
   Scheer, J
   Wurz, P
AF Saul, Lukas
   Bzowski, Maciej
   Fuselier, Stephen
   Kubiak, Marzena
   McComas, Dave
   Moebius, Eberhard
   Sokol, Justina
   Rodriguez, Diego
   Scheer, Juergen
   Wurz, Peter
TI LOCAL INTERSTELLAR HYDROGEN'S DISAPPEARANCE AT 1 AU: FOUR YEARS OF IBEX
   IN THE RISING SOLAR CYCLE
SO ASTROPHYSICAL JOURNAL
LA English
DT Article
DE ISM: general; Sun: heliosphere
ID MAGNETIC-FIELD; LO OBSERVATIONS; HELIOSPHERE; PARAMETERS; HELIUM; GAS;
   SHOCK; WIND; ATOM
AB NASA's Interstellar Boundary Explorer (IBEX) mission has recently opened a new window on the interstellar medium (ISM) by imaging neutral atoms. One "bright" feature in the sky is the interstellar wind flowing into the solar system. Composed of remnants of stellar explosions as well as primordial gas and plasma, the ISM is by no means uniform. The interaction of the local ISM with the solar wind shapes our heliospheric environment with hydrogen being the dominant component of the very local ISM. In this paper, we report on direct sampling of the neutral hydrogen of the local ISM over four years of IBEX observations. The hydrogen wind observed at 1 AU has decreased and nearly disappeared as the solar activity has increased over the last four years; the signal at 1 AU has dropped off in 2012 by a factor of similar to 8 to near background levels. The longitudinal offset has also increased with time presumably due to greater radiation pressure deflecting the interstellar wind. We present longitudinal and latitudinal arrival direction measurements of the bulk flow as measured over four years beginning at near solar minimum conditions. The H distribution we observe at 1 AU is expected to be different from that outside the heliopause due to ionization, photon pressure, gravity, and filtration by interactions with heliospheric plasma populations. These observations provide an important benchmark for modeling of the global heliospheric interaction. Based on these observations we suggest a further course of scientific action to observe neutral hydrogen over a full solar cycle with IBEX.
C1 [Saul, Lukas; Rodriguez, Diego; Scheer, Juergen; Wurz, Peter] Univ Bern, Bern, Switzerland.
   [Bzowski, Maciej; Kubiak, Marzena; Sokol, Justina] Space Res Ctr PAS, Warsaw, Poland.
   [Fuselier, Stephen; McComas, Dave] SW Res Inst, San Antonio, TX USA.
   [McComas, Dave] Univ Texas San Antonio, San Antonio, TX USA.
   [Moebius, Eberhard] Univ New Hampshire, Durham, NH 03824 USA.
   [Moebius, Eberhard] Los Alamos Natl Lab, Los Alamos, NM USA.
RP Saul, L (reprint author), Univ Bern, Bern, Switzerland.
RI Sokol, Justyna/K-2892-2015; 
OI Moebius, Eberhard/0000-0002-2745-6978
FU IBEX mission; Swiss National Foundation
FX We acknowledge the entire IBEX team for their great work and dedication
   to this successful mission. Work carried out in the United States was
   supported by the IBEX mission, which is a part of NASA's Explorer
   program. The financial support of the Swiss National Foundation and
   hospitality and work from the University of Bern team is also
   acknowledged. Participants of a scientific meeting on the very local
   interstellar medium led by Dimitra Koutroumpa at the International Space
   Science Institute in Bern are acknowledged for useful discussion.
   Finally our reviewer is acknowledged for useful discussion and advice to
   improve this manuscript.
NR 31
TC 13
Z9 13
U1 0
U2 13
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0004-637X
EI 1538-4357
J9 ASTROPHYS J
JI Astrophys. J.
PD APR 20
PY 2013
VL 767
IS 2
AR 130
DI 10.1088/0004-637X/767/2/130
PG 7
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 122VR
UT WOS:000317346800033
ER

PT J
AU Beresnyak, A
AF Beresnyak, Andrey
TI ASYMMETRIC DIFFUSION OF MAGNETIC FIELD LINES
SO ASTROPHYSICAL JOURNAL LETTERS
LA English
DT Article
DE astroparticle physics; diffusion; magnetic fields; magnetohydrodynamics
   (MHD); turbulence
ID STRONG IMBALANCED TURBULENCE; COSMIC-RAY PROPAGATION;
   MAGNETOHYDRODYNAMIC TURBULENCE; INTERSTELLAR-MEDIUM; RECONNECTION
AB Stochasticity of magnetic field lines is important for particle transport properties. Magnetic field lines separate faster than diffusively in turbulent plasma, which is called superdiffusion. We discovered that this superdiffusion is pronouncedly asymmetric, so that the separation of field lines along the magnetic field direction is different from the separation in the opposite direction. While the symmetry of the flow is broken by the so-called imbalance or cross-helicity, the difference between forward and backward diffusion is not directly due to imbalance, but a non-trivial consequence of both imbalance and non-reversibility of turbulence. The asymmetric diffusion perpendicular to the mean magnetic field entails a variety of new physical phenomena, such as the production of parallel particle streaming in the presence of perpendicular particle gradients. Such streaming and associated instabilities could be significant for particle transport in laboratory, space, and astrophysical plasmas.
C1 Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
RP Beresnyak, A (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA.
OI Beresnyak, Andrey/0000-0002-2124-7024
NR 31
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U1 0
U2 7
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 2041-8205
J9 ASTROPHYS J LETT
JI Astrophys. J. Lett.
PD APR 20
PY 2013
VL 767
IS 2
AR L39
DI 10.1088/2041-8205/767/2/L39
PG 4
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 123SN
UT WOS:000317411100019
ER

PT J
AU Pignatari, M
   Wiescher, M
   Timmes, FX
   de Boer, RJ
   Thielemann, FK
   Fryer, C
   Heger, A
   Herwig, F
   Hirschi, R
AF Pignatari, M.
   Wiescher, M.
   Timmes, F. X.
   de Boer, R. J.
   Thielemann, F. -K.
   Fryer, C.
   Heger, A.
   Herwig, F.
   Hirschi, R.
CA NuGrid Collaboration
TI PRODUCTION OF CARBON-RICH PRESOLAR GRAINS FROM MASSIVE STARS
SO ASTROPHYSICAL JOURNAL LETTERS
LA English
DT Article
DE stars: abundances; stars: evolution; stars: interiors
ID ISOTOPIC-RATIOS; SUPERNOVA; EJECTA; NUCLEOSYNTHESIS; EVOLUTION
AB About a year after core-collapse supernova, dust starts to condense in the ejecta. In meteorites, a fraction of C-rich presolar grains (e.g., silicon carbide (SiC) grains of Type-X and lowdensity graphites) are identified as relics of these events, according to the anomalous isotopic abundances. Several features of these abundances remain unexplained and challenge the understanding of core-collapse supernovae explosions and nucleosynthesis. We show, for the first time, that most of the measured C-rich grain abundances can be accounted for in the C-rich material from explosive He burning in core-collapse supernovae with high shock velocities and consequent high temperatures. The inefficiency of the C-12(alpha,gamma)O-16 reaction relative to the rest of the alpha-capture chain at T > 3.5 x 10(8) K causes the deepest He-shell material to be carbon-rich and silicon-rich, and depleted in oxygen. The isotopic ratio predictions in part of this material, defined here as the C/Si zone, are in agreement with the grain data. The high-temperature explosive conditions that our models reach at the bottom of the He shell can also be representative of the nucleosynthesis in hypernovae or in the high-temperature tail of a distribution of conditions in asymmetric supernovae. Finally, our predictions are consistent with the observation of large Ca-44/Ca-40 observed in the grains. This is due to the production of Ti-44 together with Ca-40 in the C/Si zone and/or to the strong depletion of Ca-40 by neutron captures.
C1 [Pignatari, M.; Thielemann, F. -K.] Univ Basel, Dept Phys, CH-4056 Basel, Switzerland.
   [Wiescher, M.; de Boer, R. J.] Univ Notre Dame, Dept Phys, Notre Dame, IN 46556 USA.
   [Wiescher, M.; Timmes, F. X.; de Boer, R. J.; Herwig, F.] Joint Inst Nucl Astrophys, Notre Dame, IN 46556 USA.
   [Timmes, F. X.] Arizona State Univ, Sch Earth & Space Explorat, Tempe, AZ 85287 USA.
   [Fryer, C.] LANL, Computat Phys & Methods CCS 2, Los Alamos, NM 87545 USA.
   [Heger, A.] Monash Univ, Sch Math Sci, Monash Ctr Astrophys, Clayton, Vic 3800, Australia.
   [Herwig, F.] Univ Victoria, Dept Phys & Astron, Victoria, BC V8P5C2, Canada.
   [Hirschi, R.] Keele Univ, Keele ST5 5BG, Staffs, England.
   [Hirschi, R.] Univ Tokyo, Inst Phys & Math Universe, Kashiwa, Chiba 2778583, Japan.
RP Pignatari, M (reprint author), Univ Basel, Dept Phys, Klingelbergstr 82, CH-4056 Basel, Switzerland.
OI Pignatari, Marco/0000-0002-9048-6010
FU NSF (Joint Institute for Nuclear Astrophysics; JINA) [PHY 02-16783, PHY
   09-22648]; EU [MIRG-CT-2006-046520, 306901]; STFC; NSERC; SNSF;
   EuroGENESIS
FX NuGrid acknowledges significant support from NSF grants PHY 02-16783 and
   PHY 09-22648 (Joint Institute for Nuclear Astrophysics; JINA) and EU
   MIRG-CT-2006-046520. The continued work on codes and in disseminating
   data is made possible through funding from STFC and EU-FP7-ERC-2012-St
   Grant 306901 (R.H., UK), and NSERC Discovery grant (F.H., Canada), and
   an Ambizione grant of the SNSF (M.P., Switzerland). M.P. also thanks
   support from EuroGENESIS. NuGrid data is served by Canfar/CADC. We thank
   the anonymous reviewer for detailed comments and suggestions that
   greatly improved the manuscript.
NR 21
TC 15
Z9 15
U1 0
U2 5
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 2041-8205
J9 ASTROPHYS J LETT
JI Astrophys. J. Lett.
PD APR 20
PY 2013
VL 767
IS 2
AR L22
DI 10.1088/2041-8205/767/2/L22
PG 6
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 123SN
UT WOS:000317411100002
ER

PT J
AU Tang, SM
   Cao, Y
   Bildsten, L
   Nugent, P
   Bellm, E
   Kulkarni, SR
   Laher, R
   Levitan, D
   Masci, F
   Ofek, EO
   Prince, TA
   Sesar, B
   Surace, J
AF Tang, Sumin
   Cao, Yi
   Bildsten, Lars
   Nugent, Peter
   Bellm, Eric
   Kulkarni, Shrinivas R.
   Laher, Russ
   Levitan, David
   Masci, Frank
   Ofek, Eran O.
   Prince, Thomas A.
   Sesar, Branimir
   Surace, Jason
TI R CORONAE BOREALIS STARS IN M31 FROM THE PALOMAR TRANSIENT FACTORY
SO ASTROPHYSICAL JOURNAL LETTERS
LA English
DT Article
DE galaxies: individual (M31); stars: AGB and post-AGB; stars: carbon;
   stars: variables: general; supergiants
ID HYDROGEN-DEFICIENT CARBON; WHITE-DWARF MERGERS; SPECTROSCOPIC SURVEY;
   MAGELLANIC-CLOUD; SPECTROGRAPH; TELESCOPE; BINARIES; PIPELINE; O-18
AB We report the discovery of R Coronae Borealis (RCB) stars in the Andromeda galaxy (M31) using the Palomar Transient Factory (PTF). RCB stars are rare hydrogen-deficient, carbon-rich supergiant variables, most likely the merger products of two white dwarfs. These new RCBs, including two confirmed ones and two candidates, are the first to be found beyond the Milky Way and the Magellanic Clouds. All of M31 RCBs showed > 1.5 mag irregular declines over timescales of weeks to months. Due to the limiting magnitude of our data (R approximate to 21-22 mag), these RCB stars have R approximate to 19.5-20.5 mag at maximum light, corresponding to M-R = -4 to -5, making them some of the most luminous RCBs known. Spectra of two objects show that they are warm RCBs, similar to the Milky Way RCBs RY Sgr and V854 Cen. We consider these results, derived from a pilot study of M31 variables, as an important proof-of-concept for the study of rare bright variables in nearby galaxies with the PTF or other synoptic surveys.
C1 [Tang, Sumin; Bildsten, Lars] Univ Calif Santa Barbara, Kavli Inst Theoret Phys, Santa Barbara, CA 93106 USA.
   [Tang, Sumin; Cao, Yi; Bellm, Eric; Kulkarni, Shrinivas R.; Levitan, David; Prince, Thomas A.; Sesar, Branimir] CALTECH, Div Phys Math & Astron, Pasadena, CA 91125 USA.
   [Nugent, Peter] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Computat Cosmol Ctr, Berkeley, CA 94720 USA.
   [Nugent, Peter] Univ Calif Berkeley, Dept Astron, Berkeley, CA 94720 USA.
   [Laher, Russ; Surace, Jason] CALTECH, Spitzer Sci Ctr, Pasadena, CA 91125 USA.
   [Masci, Frank] CALTECH, Infrared Proc & Anal Ctr, Pasadena, CA 91125 USA.
   [Ofek, Eran O.] Weizmann Inst Sci, Benoziyo Ctr Astrophys, IL-76100 Rehovot, Israel.
   [Ofek, Eran O.] Weizmann Inst Sci, Helen Kimmel Ctr Planetary Sci, IL-76100 Rehovot, Israel.
RP Tang, SM (reprint author), Univ Calif Santa Barbara, Kavli Inst Theoret Phys, Santa Barbara, CA 93106 USA.
OI Bellm, Eric/0000-0001-8018-5348
FU National Science Foundation [PHY 11-25915, AST 11-09174]; Israeli
   Ministry of Science
FX We thank Geoff Clayton for pointing out the similarities between
   PTF-M31-RCB-1 (2) and RY Sgr (V854 Cen), providing spectra of RY Sgr and
   V854 Cen, and many helpful discussions. We thank the anonymous referee
   for comments that have helped to improve this Letter. We thank Sagi
   Ben-Ami and Dong Xu for reducing two candidate spectra, and Adam Miller
   for helpful discussion. This work was supported by the National Science
   Foundation under grants PHY 11-25915 and AST 11-09174. E.O.O. is
   incumbent of the Arye Dissentshik career development chair and is
   grateful to support by a grant from the Israeli Ministry of Science.
NR 35
TC 2
Z9 2
U1 0
U2 1
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 2041-8205
J9 ASTROPHYS J LETT
JI Astrophys. J. Lett.
PD APR 20
PY 2013
VL 767
IS 2
AR L23
DI 10.1088/2041-8205/767/2/L23
PG 5
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 123SN
UT WOS:000317411100003
ER

PT J
AU Gerstenberger, A
   Tuminaro, RS
AF Gerstenberger, Axel
   Tuminaro, Raymond S.
TI An algebraic multigrid approach to solve extended finite element method
   based fracture problems
SO INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN ENGINEERING
LA English
DT Article
DE extended finite element method; algebraic multigrid; iterative solver;
   phantom nodes
ID FLUID-STRUCTURE INTERACTION; CRACK-GROWTH; LEVEL SETS; X-FEM; ARBITRARY
   DISCONTINUITIES; WEAK DISCONTINUITIES; SMOOTHED AGGREGATION; SOLID
   MECHANICS; PROPAGATION; SIMULATION
AB This article proposes an algebraic multigrid (AMG) approach to solve linear systems arising from applications where strong discontinuities are modeled by the extended finite element method. The application of AMG methods promises optimal scalability for solving large linear systems. However, the straightforward (or black-box') use of existing AMG techniques for extended finite element method problems is often problematic. In this paper, we highlight the reasons for this behavior and propose a relatively simple adaptation that allows one to leverage existing AMG software mostly unchanged. Numerical tests demonstrate that optimal iterative convergence rates can be attained that are comparable with AMG convergence rates associated with linear systems for standard finite element approximations without discontinuities. Published 2012. This article is a US Government work and is in the public domain in the USA.
C1 [Gerstenberger, Axel; Tuminaro, Raymond S.] Sandia Natl Labs, Albuquerque, NM 87185 USA.
RP Tuminaro, RS (reprint author), Sandia Natl Labs, POB 5800,MS 1320, Albuquerque, NM 87185 USA.
EM rstumin@sandia.gov
FU Department of Energy [DE-SC0002137]; DOE ASCR SciDAC ISICLES initiative
FX The financial support of the Department of Energy under grant
   DE-SC0002137 and more generally the support from the DOE ASCR SciDAC
   ISICLES initiative are gratefully acknowledged.
NR 37
TC 6
Z9 6
U1 0
U2 19
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 0029-5981
J9 INT J NUMER METH ENG
JI Int. J. Numer. Methods Eng.
PD APR 20
PY 2013
VL 94
IS 3
BP 248
EP 272
DI 10.1002/nme.4442
PG 25
WC Engineering, Multidisciplinary; Mathematics, Interdisciplinary
   Applications
SC Engineering; Mathematics
GA 117QV
UT WOS:000316969100002
ER

PT J
AU Waltz, J
AF Waltz, Jacob
TI Spatial accuracy and performance of a mixed-order, explicit multi-stage
   method for unsteady flows
SO INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN FLUIDS
LA English
DT Article
DE adaptivity; time integration; verification; finite element; explicit;
   compressible flow
ID UNSTRUCTURED GRIDS; COMPRESSIBLE FLOWS; SOLVERS; SIMULATION; SPEED
AB We assess the spatial accuracy and performance of a mixed-order, explicit multi-stage method in which an inexpensive low-order scheme is used for the initial stages, and a more expensive high-order scheme is used for the final stage only. Compared with the use of a high-order scheme for all stages, we observe that the mixed-order scheme achieves comparable accuracy and convergence while providing a speed-up of a factor of two on mesh sizes of O(106107) tetrahedron. For calculations with significant adaptive mesh refinement, a more modest speed-up of 30% is obtained. Published 2012. This article is a US Government work and is in the public domain in the USA.
C1 Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
   [Waltz, Jacob] Los Alamos Natl Lab, Computat Phys Div, Los Alamos, NM 87545 USA.
RP Waltz, J (reprint author), Los Alamos Natl Lab, MS B259, Los Alamos, NM 87545 USA.
EM jwaltz@lanl.gov
NR 17
TC 4
Z9 4
U1 0
U2 5
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 0271-2091
EI 1097-0363
J9 INT J NUMER METH FL
JI Int. J. Numer. Methods Fluids
PD APR 20
PY 2013
VL 71
IS 11
BP 1361
EP 1368
DI 10.1002/fld.3715
PG 8
WC Computer Science, Interdisciplinary Applications; Mathematics,
   Interdisciplinary Applications; Mechanics; Physics, Fluids & Plasmas
SC Computer Science; Mathematics; Mechanics; Physics
GA 112VT
UT WOS:000316623000002
ER

PT J
AU Cao, G
   Subedi, A
   Calder, S
   Yan, JQ
   Yi, JY
   Gai, Z
   Poudel, L
   Singh, DJ
   Lumsden, MD
   Christianson, AD
   Sales, BC
   Mandrus, D
AF Cao, Guixin
   Subedi, Alaska
   Calder, S.
   Yan, J. -Q.
   Yi, Jieyu
   Gai, Zheng
   Poudel, Lekhanath
   Singh, David J.
   Lumsden, Mark D.
   Christianson, A. D.
   Sales, Brian C.
   Mandrus, David
TI Magnetism and electronic structure of La2ZnIrO6 and La2MgIrO6: Candidate
   J(eff)=1/2 Mott insulators
SO PHYSICAL REVIEW B
LA English
DT Article
ID CRYSTAL-STRUCTURES; SR2IRO4; TRANSITION; STATE; ZN
AB We study experimentally and theoretically the electronic and magnetic properties of two insulating double perovskites that show similar atomic and electronic structure but different magnetic properties. In magnetization measurements, La2ZnIrO6 displays weak ferromagnetic behavior below 7.5 K, whereas La2MgIrO6 shows antiferromagnetic behavior below T-N = 12 K. Electronic structure calculations find that the weak ferromagnetic behavior observed in La2ZnIrO6 is in fact due to canted antiferromagnetism. The calculations also predict canted antiferromagnetic behavior in La2MgIrO6, but intriguingly, this was not observed. Neutron diffraction measurements confirm the essentially antiferromagnetic behavior of both systems but lack the sensitivity to resolve the small (0.22 mu(B)/Ir) ferromagnetic component in La2ZnIrO6. Overall, the results presented here indicate the crucial role of spin-orbit coupling (SOC) and the on-site Coulomb repulsion on the magnetic, transport, and thermodynamic properties of both compounds. The electronic structure calculations show that both compounds, like Sr2IrO4, are J(eff) = 1/2 Mott insulators. Our present findings suggest that La2ZnIrO6 and La2MgIrO6 provide a newplayground to study the interplay between SOC and on-site Coulomb repulsion in a 5d transition-metal oxide. DOI: 10.1103/PhysRevB.87.155136
C1 [Cao, Guixin; Yan, J. -Q.; Yi, Jieyu; Mandrus, David] Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USA.
   [Cao, Guixin; Yan, J. -Q.; Singh, David J.; Sales, Brian C.; Mandrus, David] Oak Ridge Natl Lab, Mat Sci & Technol Div, Oak Ridge, TN 37831 USA.
   [Cao, Guixin; Yi, Jieyu; Gai, Zheng] Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Oak Ridge, TN 37830 USA.
   [Subedi, Alaska] Max Planck Inst Solid State Res, D-70569 Stuttgart, Germany.
   [Subedi, Alaska] Ecole Polytech, Ctr Phys Theor, CNRS, F-91128 Palaiseau, France.
   [Calder, S.; Lumsden, Mark D.; Christianson, A. D.] Oak Ridge Natl Lab, Quantum Condensed Matter Div, Oak Ridge, TN 37831 USA.
   [Poudel, Lekhanath; Mandrus, David] Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA.
RP Cao, G (reprint author), Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USA.
EM gcao1@utk.edu; dmandrus@utk.edu
RI Gai, Zheng/B-5327-2012; Mandrus, David/H-3090-2014; Cao,
   Guixin/G-4452-2015; christianson, andrew/A-3277-2016; Lumsden,
   Mark/F-5366-2012; 
OI Gai, Zheng/0000-0002-6099-4559; Cao, Guixin/0000-0002-9252-1158;
   christianson, andrew/0000-0003-3369-5884; Lumsden,
   Mark/0000-0002-5472-9660; Calder, Stuart/0000-0001-8402-3741
FU DOE Basic Energy Sciences, Scientific User Facilities Division; DOE
   Basic Energy Sciences, Materials Science and Engineering Division;
   Scientific User Facilities Division (at the Center for Nanophase
   Materials Sciences, ORNL)
FX We acknowledge useful discussions with Satoshi Okamoto and George
   Jackeli. Research at ORNL's High Flux Isotope Reactor was sponsored by
   DOE Basic Energy Sciences, Scientific User Facilities Division (A. C.,
   M. D. L., and S. C.). Other research at ORNL was sponsored by DOE Basic
   Energy Sciences, Materials Science and Engineering Division (B. C. S.,
   D.J.S., J.Q.Y., and D. G. M.) and the Scientific User Facilities
   Division (G.C. and Z.G at the Center for Nanophase Materials Sciences,
   ORNL).
NR 38
TC 14
Z9 14
U1 10
U2 58
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD APR 19
PY 2013
VL 87
IS 15
AR 155136
DI 10.1103/PhysRevB.87.155136
PG 9
WC Physics, Condensed Matter
SC Physics
GA 129FD
UT WOS:000317823400002
ER

PT J
AU Fishman, RS
   Haraldsen, JT
   Furukawa, N
   Miyahara, S
AF Fishman, Randy S.
   Haraldsen, Jason T.
   Furukawa, Nobuo
   Miyahara, Shin
TI Spin state and spectroscopic modes of multiferroic BiFeO3
SO PHYSICAL REVIEW B
LA English
DT Article
AB Spectroscopic modes provide the most sensitive probe of the very weak interactions responsible for the properties of the long-wavelength cycloid in the multiferroic phase of BiFeO3 below T-N approximate to 640 K. Three of the four modes measured by terahertz (THz) and Raman spectroscopies were recently identified using a simple microscopic model. While a Dzyaloshinskii-Moriya (DM) interaction D along [-1,2,-1] induces a cycloid with wave vector (2 pi/a)(0.5 + delta, 0.5,0.5 - delta) (delta approximate to 0.0045), easy-axis anisotropy K along the [1,1,1] direction of the electric polarization P induces higher harmonics of the cycloid, which split the Psi(1) modes at 2.49 and 2.67 meV and activate the Phi(2) mode at 3.38 meV. However, that model could not explain the observed low-frequency mode at about 2.17 meV. We now demonstrate that an additional DM interaction D' along [1,1,1] not only produces the observed weak ferromagnetic moment of the high-field phase above 18 T but also activates the spectroscopic matrix elements of the nearly degenerate, low-frequency Psi(0) and Phi(1) modes, although their scattering intensities remain extremely weak. Even in the absence of easy-axis anisotropy, D' produces cycloidal harmonics that split Psi(1) and activate Phi(2). However, the observed mode frequencies and selection rules require that both D' and K are nonzero. This work also resolves an earlier disagreement between spectroscopic and inelastic neutron-scattering measurements. DOI: 10.1103/PhysRevB.87.134416
C1 [Fishman, Randy S.] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA.
   [Haraldsen, Jason T.] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA.
   [Haraldsen, Jason T.] Los Alamos Natl Lab, Ctr Integrated Nanotechnol, Los Alamos, NM 87545 USA.
   [Furukawa, Nobuo] Aoyama Gakuin Univ, Dept Math & Phys, Sagamihara, Kanagawa 2298558, Japan.
   [Miyahara, Shin] Pohang Univ Sci & Technol, Asia Pacific Ctr Theoret Phys, Pohang 790784, Gyeongbuk, South Korea.
RP Fishman, RS (reprint author), Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA.
RI Haraldsen, Jason/B-9809-2012
OI Haraldsen, Jason/0000-0002-8641-5412
FU US Department of Energy, Office of Basic Energy Sciences, Materials
   Sciences and Engineering Division; Center for Integrated
   Nanotechnologies, a US Department of Energy, Office of Basic Energy
   Sciences; Ministry of Education, Culture, and Technology, Japan (MEXT);
   Max Planck Society (MPG); Korea Ministry of Education, Science and
   Technology (MEST); Gyeongsangbuk-Do; Pohang City
FX We gratefully acknowledge conversations with Masaaki Matsuda, Jan
   Musfeldt, Satoshi Okamoto, and Toomas Roon. The research was sponsored
   by the US Department of Energy, Office of Basic Energy Sciences,
   Materials Sciences and Engineering Division (R. F.), by the Center for
   Integrated Nanotechnologies, a US Department of Energy, Office of Basic
   Energy Sciences user facility at Los Alamos National Laboratory,
   operated by Los Alamos National Security, LLC for the National Nuclear
   Security Administration of the US Department of Energy (J.T.H.), by
   Grants-in-Aid for Scientific Research from the Ministry of Education,
   Culture, and Technology, Japan (MEXT) (N.F.), and by the Max Planck
   Society (MPG), the Korea Ministry of Education, Science and Technology
   (MEST), Gyeongsangbuk-Do, and Pohang City (S.M.).
NR 40
TC 23
Z9 23
U1 3
U2 61
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD APR 19
PY 2013
VL 87
IS 13
AR 134416
DI 10.1103/PhysRevB.87.134416
PG 10
WC Physics, Condensed Matter
SC Physics
GA 129EF
UT WOS:000317821000001
ER

PT J
AU Liu, Y
   Tanatar, MA
   Kogan, VG
   Kim, H
   Lograsso, TA
   Prozorov, R
AF Liu, Yong
   Tanatar, M. A.
   Kogan, V. G.
   Kim, Hyunsoo
   Lograsso, T. A.
   Prozorov, R.
TI Upper critical field of high-quality single crystals of KFe2As2
SO PHYSICAL REVIEW B
LA English
DT Article
ID HIGH-TEMPERATURE SUPERCONDUCTIVITY
AB Measurements of temperature-dependent in-plane resistivity rho(T) were used to determine the upper critical field and its anisotropy in high-quality single crystals of the stoichiometric iron arsenide superconductor KFe2As2. The crystals were characterized by the residual resistivity ratio rho(300 K)/rho(0) up to 3000 and the resistive transition midpoint temperature T-c = 3.8 K, significantly higher than in previous studies on the same material. We find increased H-c2(T) for both directions of the magnetic field, which scale with the increased T-c. This unusual linear H-c2(T-c) scaling is not expected for an orbital-limiting mechanism of the upper critical field in clean materials. DOI: 10.1103/PhysRevB.87.134513
C1 [Liu, Yong; Tanatar, M. A.; Kogan, V. G.; Kim, Hyunsoo; Lograsso, T. A.; Prozorov, R.] Ames Lab, Ames, IA 50011 USA.
   [Tanatar, M. A.; Kim, Hyunsoo; Prozorov, R.] Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA.
RP Prozorov, R (reprint author), Ames Lab, Ames, IA 50011 USA.
EM yliu@ameslab.gov; tanatar@ameslab.gov; kogan@ameslab.gov;
   hyunsoo@iastate.edu; lograsso@ameslab.gov; prozorov@ameslab.gov
FU U.S. Department of Energy, Office of Basic Energy Sciences, Division of
   Materials Sciences and Engineering [DE-AC02-07CH11358]
FX The work at Ames was supported by the U.S. Department of Energy, Office
   of Basic Energy Sciences, Division of Materials Sciences and Engineering
   under Contract No. DE-AC02-07CH11358.
NR 41
TC 17
Z9 17
U1 1
U2 33
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 2469-9950
EI 2469-9969
J9 PHYS REV B
JI Phys. Rev. B
PD APR 19
PY 2013
VL 87
IS 13
AR 134513
DI 10.1103/PhysRevB.87.134513
PG 6
WC Physics, Condensed Matter
SC Physics
GA 129EF
UT WOS:000317821000002
ER

PT J
AU Nepali, CS
   Amaryan, M
   Adhikari, KP
   Aghasyan, M
   Pereira, SA
   Baghdasaryan, H
   Ball, J
   Battaglieri, M
   Batourine, V
   Bedlinskiy, I
   Biselli, AS
   Bono, J
   Boiarinov, S
   Briscoe, WJ
   Bultmann, S
   Burkert, VD
   Carman, DS
   Celentano, A
   Chandavar, S
   Charles, G
   Cole, PL
   Collins, P
   Contalbrigo, M
   Crede, V
   Dashyan, N
   De Vita, R
   De Sanctis, E
   Deur, A
   Djalali, C
   Doughty, D
   Dupre, R
   El Alaoui, A
   El Fassi, L
   Fedotov, G
   Fegan, S
   Fersch, R
   Fleming, JA
   Gabrielyan, MY
   Gevorgyan, N
   Giovanetti, KL
   Girod, FX
   Glazier, DI
   Goetz, JT
   Gohn, W
   Golovatch, E
   Gothe, RW
   Griffioen, KA
   Guidal, M
   Guler, N
   Hafidi, K
   Hakobyan, H
   Hanretty, C
   Harrison, N
   Heddle, D
   Hicks, K
   Ho, D
   Holtrop, M
   Hyde, CE
   Ilieva, Y
   Ireland, DG
   Ishkhanov, BS
   Isupov, EL
   Jo, HS
   Keller, D
   Khandaker, M
   Khetarpal, P
   Kim, A
   Kim, W
   Klein, A
   Klein, FJ
   Koirala, S
   Kubarovsky, V
   Kuhn, SE
   Kuleshov, SV
   Kvaltine, ND
   Lu, HY
   MacGregor, IJD
   Markov, N
   Mayer, M
   McKinnon, B
   Mineeva, T
   Mirazita, M
   Mokeev, V
   Montgomery, RA
   Munevar, E
   Camacho, CM
   Nadel-Turonski, P
   Niccolai, S
   Niculescu, G
   Niculescu, I
   Osipenko, M
   Ostrovidov, AI
   Pappalardo, LL
   Paremuzyan, R
   Park, K
   Park, S
   Pasyuk, E
   Phelps, E
   Phillips, JJ
   Pisano, S
   Pogorelko, O
   Pozdniakov, S
   Price, JW
   Procureur, S
   Protopopescu, D
   Puckett, AJR
   Raue, BA
   Rimal, D
   Ripani, M
   Ritchie, BG
   Rosner, G
   Rossi, P
   Sabatie, F
   Saini, MS
   Salgado, C
   Schott, D
   Schumacher, RA
   Seder, E
   Seraydaryan, H
   Sharabian, YG
   Smith, GD
   Sober, DI
   Sokhan, D
   Stepanyan, SS
   Stepanyan, S
   Strakovsky, II
   Strauch, S
   Taiuti, M
   Tang, W
   Taylor, CE
   Tian, Y
   Tkachenko, S
   Torayev, B
   Vernarsky, B
   Vlassov, AV
   Voskanyan, H
   Voutier, E
   Walford, NK
   Watts, DP
   Weinstein, LB
   Weygand, DP
   Zachariou, N
   Zana, L
   Zhang, J
   Zhao, ZW
   Zonta, I
AF Nepali, C. S.
   Amaryan, M.
   Adhikari, K. P.
   Aghasyan, M.
   Pereira, S. Anefalos
   Baghdasaryan, H.
   Ball, J.
   Battaglieri, M.
   Batourine, V.
   Bedlinskiy, I.
   Biselli, A. S.
   Bono, J.
   Boiarinov, S.
   Briscoe, W. J.
   Bueltmann, S.
   Burkert, V. D.
   Carman, D. S.
   Celentano, A.
   Chandavar, S.
   Charles, G.
   Cole, P. L.
   Collins, P.
   Contalbrigo, M.
   Crede, V.
   Dashyan, N.
   De Vita, R.
   De Sanctis, E.
   Deur, A.
   Djalali, C.
   Doughty, D.
   Dupre, R.
   El Alaoui, A.
   El Fassi, L.
   Fedotov, G.
   Fegan, S.
   Fersch, R.
   Fleming, J. A.
   Gabrielyan, M. Y.
   Gevorgyan, N.
   Giovanetti, K. L.
   Girod, F. X.
   Glazier, D. I.
   Goetz, J. T.
   Gohn, W.
   Golovatch, E.
   Gothe, R. W.
   Griffioen, K. A.
   Guidal, M.
   Guler, N.
   Hafidi, K.
   Hakobyan, H.
   Hanretty, C.
   Harrison, N.
   Heddle, D.
   Hicks, K.
   Ho, D.
   Holtrop, M.
   Hyde, C. E.
   Ilieva, Y.
   Ireland, D. G.
   Ishkhanov, B. S.
   Isupov, E. L.
   Jo, H. S.
   Keller, D.
   Khandaker, M.
   Khetarpal, P.
   Kim, A.
   Kim, W.
   Klein, A.
   Klein, F. J.
   Koirala, S.
   Kubarovsky, V.
   Kuhn, S. E.
   Kuleshov, S. V.
   Kvaltine, N. D.
   Lu, H. Y.
   MacGregor, I. J. D.
   Markov, N.
   Mayer, M.
   McKinnon, B.
   Mineeva, T.
   Mirazita, M.
   Mokeev, V.
   Montgomery, R. A.
   Munevar, E.
   Camacho, C. Munoz
   Nadel-Turonski, P.
   Niccolai, S.
   Niculescu, G.
   Niculescu, I.
   Osipenko, M.
   Ostrovidov, A. I.
   Pappalardo, L. L.
   Paremuzyan, R.
   Park, K.
   Park, S.
   Pasyuk, E.
   Phelps, E.
   Phillips, J. J.
   Pisano, S.
   Pogorelko, O.
   Pozdniakov, S.
   Price, J. W.
   Procureur, S.
   Protopopescu, D.
   Puckett, A. J. R.
   Raue, B. A.
   Rimal, D.
   Ripani, M.
   Ritchie, B. G.
   Rosner, G.
   Rossi, P.
   Sabatie, F.
   Saini, M. S.
   Salgado, C.
   Schott, D.
   Schumacher, R. A.
   Seder, E.
   Seraydaryan, H.
   Sharabian, Y. G.
   Smith, G. D.
   Sober, D. I.
   Sokhan, D.
   Stepanyan, S. S.
   Stepanyan, S.
   Strakovsky, I. I.
   Strauch, S.
   Taiuti, M.
   Tang, W.
   Taylor, C. E.
   Tian, Ye
   Tkachenko, S.
   Torayev, B.
   Vernarsky, B.
   Vlassov, A. V.
   Voskanyan, H.
   Voutier, E.
   Walford, N. K.
   Watts, D. P.
   Weinstein, L. B.
   Weygand, D. P.
   Zachariou, N.
   Zana, L.
   Zhang, J.
   Zhao, Z. W.
   Zonta, I.
CA CLAS Collaboration
TI Transverse polarization of Sigma(+)(1189) in photoproduction on a
   hydrogen target in CLAS
SO PHYSICAL REVIEW C
LA English
DT Article
ID PHOTON ENERGIES; QUARK-MODEL; LAMBDA; DECAY; SIGMA(0); HYPERON; BARYONS;
   ETA
AB Experimental results on the Sigma(+)(1189) hyperon transverse polarization in photoproduction on a hydrogen target using the CLAS detector at Jefferson Laboratory are presented. The Sigma(+)(1189) was reconstructed in the exclusive reaction gamma + p -> K-s(0) + Sigma(+)(1189) via the Sigma(+) -> p pi(0) decay mode. The K-s(0) was reconstructed in the invariant mass of two oppositely charged pions with the pi(0) identified in the missing mass of the detected p pi(+)pi(-) final state. Experimental data were collected in the photon energy range E-gamma = 1.0-3.5 GeV (root s range 1.66-2.73 GeV). We observe a large negative polarization of up to 95%. As the mechanism of transverse polarization of hyperons produced in unpolarized photoproduction experiments is still not well understood, these results will help to distinguish between different theoretical models on hyperon production and provide valuable information for the searches of missing baryon resonances.
C1 [El Alaoui, A.; El Fassi, L.; Hafidi, K.] Argonne Natl Lab, Argonne, IL 60439 USA.
   [Park, S.; Ritchie, B. G.] Arizona State Univ, Tempe, AZ 85287 USA.
   [Price, J. W.] Calif State Univ Dominguez Hills, Carson, CA 90747 USA.
   [Biselli, A. S.; Ho, D.; Lu, H. Y.; Schumacher, R. A.; Vernarsky, B.] Carnegie Mellon Univ, Pittsburgh, PA 15213 USA.
   [Collins, P.; Klein, F. J.; Sober, D. I.; Walford, N. K.] Catholic Univ Amer, Washington, DC 20064 USA.
   [Ball, J.; Charles, G.; Girod, F. X.; Procureur, S.; Sabatie, F.] CEA, Ctr Saclay, Irfu Serv Phys Nucl, F-91191 Gif Sur Yvette, France.
   [Doughty, D.; Heddle, D.] Christopher Newport Univ, Newport News, VA 23606 USA.
   [Gohn, W.; Harrison, N.; Markov, N.; Mineeva, T.; Seder, E.] Univ Connecticut, Storrs, CT 06269 USA.
   [Fleming, J. A.; Glazier, D. I.; Watts, D. P.] Univ Edinburgh, Edinburgh EH9 3JZ, Midlothian, Scotland.
   [Biselli, A. S.] Fairfield Univ, Fairfield, CT 06824 USA.
   [Bono, J.; Gabrielyan, M. Y.; Khetarpal, P.; Raue, B. A.; Rimal, D.] Florida Int Univ, Miami, FL 33199 USA.
   [Crede, V.; Ostrovidov, A. I.; Saini, M. S.] Florida State Univ, Tallahassee, FL 32306 USA.
   [Taiuti, M.] Univ Genoa, I-16146 Genoa, Italy.
   [Briscoe, W. J.; Ilieva, Y.; Schott, D.; Strakovsky, I. I.; Strauch, S.] George Washington Univ, Washington, DC 20052 USA.
   [Cole, P. L.; Taylor, C. E.] Idaho State Univ, Pocatello, ID 83209 USA.
   [Contalbrigo, M.; Pappalardo, L. L.] Ist Nazl Fis Nucl, Sez Ferrara, I-44100 Ferrara, Italy.
   [Aghasyan, M.; Pereira, S. Anefalos; De Sanctis, E.; Mirazita, M.; Phillips, J. J.; Rossi, P.] Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy.
   [Battaglieri, M.; Celentano, A.; De Vita, R.; Osipenko, M.; Ripani, M.] Ist Nazl Fis Nucl, Sez Genova, I-16146 Genoa, Italy.
   [Zonta, I.] Ist Nazl Fis Nucl, Sez Roma Tor Vergata, I-00133 Rome, Italy.
   [Dupre, R.; Guidal, M.; Jo, H. S.; Camacho, C. Munoz; Niccolai, S.] Inst Phys Nucl ORSAY, Orsay, France.
   [Bedlinskiy, I.; Kuleshov, S. V.; Pisano, S.; Pogorelko, O.; Pozdniakov, S.; Vlassov, A. V.] Inst Theoret & Expt Phys, Moscow 117259, Russia.
   [Giovanetti, K. L.; Niculescu, G.; Niculescu, I.] James Madison Univ, Harrisonburg, VA 22807 USA.
   [Batourine, V.; Kim, A.; Kim, W.; Park, K.; Stepanyan, S. S.] Kyungpook Natl Univ, Taegu 702701, South Korea.
   [Voutier, E.] Univ Grenoble 1, CNRS, IN2P3, LPSC,INPG, Grenoble, France.
   [Holtrop, M.; Zana, L.] Univ New Hampshire, Durham, NH 03824 USA.
   [Khandaker, M.; Salgado, C.] Norfolk State Univ, Norfolk, VA 23504 USA.
   [Chandavar, S.; Goetz, J. T.; Hicks, K.; Tang, W.] Ohio Univ, Athens, OH 45701 USA.
   [Nepali, C. S.; Amaryan, M.; Adhikari, K. P.; Baghdasaryan, H.; Bueltmann, S.; Guler, N.; Hyde, C. E.; Klein, A.; Koirala, S.; Kuhn, S. E.; Mayer, M.; Seraydaryan, H.; Torayev, B.; Weinstein, L. B.] Old Dominion Univ, Norfolk, VA 23529 USA.
   [Kubarovsky, V.] Rensselaer Polytech Inst, Troy, NY 12180 USA.
   [Fedotov, G.; Golovatch, E.; Ishkhanov, B. S.; Isupov, E. L.; Mokeev, V.] Skobeltsyn Nucl Phys Inst, Moscow 119899, Russia.
   [Djalali, C.; Fedotov, G.; Gothe, R. W.; Ilieva, Y.; Pasyuk, E.; Strauch, S.; Tian, Ye; Zachariou, N.] Univ S Carolina, Columbia, SC 29208 USA.
   [Batourine, V.; Boiarinov, S.; Burkert, V. D.; Carman, D. S.; Deur, A.; Doughty, D.; Girod, F. X.; Heddle, D.; Kubarovsky, V.; Mokeev, V.; Munevar, E.; Nadel-Turonski, P.; Park, K.; Park, S.; Puckett, A. J. R.; Raue, B. A.; Sharabian, Y. G.; Stepanyan, S.; Weygand, D. P.; Zhang, J.] Thomas Jefferson Natl Accelerator Facil, Newport News, VA 23606 USA.
   [Hakobyan, H.; Kuleshov, S. V.] Univ Tecn Federico Santa Maria, Valparaiso, Chile.
   [Fegan, S.; Ireland, D. G.; MacGregor, I. J. D.; McKinnon, B.; Montgomery, R. A.; Phelps, E.; Protopopescu, D.; Rosner, G.; Smith, G. D.; Sokhan, D.] Univ Glasgow, Glasgow G12 8QQ, Lanark, Scotland.
   [Baghdasaryan, H.; Hanretty, C.; Keller, D.; Kvaltine, N. D.; Tkachenko, S.; Zhao, Z. W.] Univ Virginia, Charlottesville, VA 22901 USA.
   [Fersch, R.; Griffioen, K. A.] Coll William & Mary, Williamsburg, VA 23187 USA.
   [Dashyan, N.; Gevorgyan, N.; Hakobyan, H.; Paremuzyan, R.; Voskanyan, H.] Yerevan Phys Inst, Yerevan 375036, Armenia.
RP Nepali, CS (reprint author), Old Dominion Univ, Norfolk, VA 23529 USA.
EM cnepali@jlab.org
RI Zhang, Jixie/A-1461-2016; Celentano, Andrea/J-6190-2012; MacGregor,
   Ian/D-4072-2011; Kuleshov, Sergey/D-9940-2013; Schumacher,
   Reinhard/K-6455-2013; Ishkhanov, Boris/E-1431-2012; Ireland,
   David/E-8618-2010; Lu, Haiyun/B-4083-2012; Charles, Gabriel/B-7573-2015;
   El Alaoui, Ahmed/B-4638-2015; Sabatie, Franck/K-9066-2015; Osipenko,
   Mikhail/N-8292-2015
OI Celentano, Andrea/0000-0002-7104-2983; Kuleshov,
   Sergey/0000-0002-3065-326X; Schumacher, Reinhard/0000-0002-3860-1827;
   Ireland, David/0000-0001-7713-7011; Sabatie, Franck/0000-0001-7031-3975;
   Osipenko, Mikhail/0000-0001-9618-3013
FU Italian Istituto Nazionale di Fisica Nucleare; French Centre National de
   la Recherche Scientifique and Commissariat a l'Energie Atomique; U.S.
   Department of Energy and National Science Foundation; National Research
   Foundation of Korea; United Kingdom's Science and Technology Facilities
   Council; United States Department of Energy [DEAC05-84ER40150]
FX We would like to acknowledge the outstanding efforts of the staff of the
   Accelerator and the Physics Divisions at Jefferson Laboratory that made
   the experiment possible. This work was supported in part by the Italian
   Istituto Nazionale di Fisica Nucleare, the French Centre National de la
   Recherche Scientifique and Commissariat a l'Energie Atomique, the U.S.
   Department of Energy and National Science Foundation, the National
   Research Foundation of Korea, and the United Kingdom's Science and
   Technology Facilities Council. The Southeastern Universities Research
   Association (SURA) operates the Thomas Jefferson National Accelerator
   Facility for the United States Department of Energy under Contract No.
   DEAC05-84ER40150.
NR 26
TC 1
Z9 1
U1 0
U2 11
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 2469-9985
EI 2469-9993
J9 PHYS REV C
JI Phys. Rev. C
PD APR 19
PY 2013
VL 87
IS 4
AR 045206
DI 10.1103/PhysRevC.87.045206
PG 10
WC Physics, Nuclear
SC Physics
GA 129GO
UT WOS:000317827300003
ER

PT J
AU Nomura, Y
   Varela, J
   Weinberg, SJ
AF Nomura, Yasunori
   Varela, Jaime
   Weinberg, Sean J.
TI Black holes, information, and Hilbert space for quantum gravity
SO PHYSICAL REVIEW D
LA English
DT Article
ID ETERNAL INFLATION; EVAPORATION; PARTICLES
AB A coarse-grained description for the formation and evaporation of a black hole is given within the framework of a unitary theory of quantum gravity preserving locality, without dropping the information that manifests as macroscopic properties of the state at late times. The resulting picture depends strongly on the reference frame one chooses to describe the process. In one description based on a reference frame in which the reference point stays outside the black hole horizon for sufficiently long time, a late black hole state becomes a superposition of black holes in different locations and with different spins, even if the back hole is formed from collapsing matter that had a well-defined classical configuration with no angular momentum. The information about the initial state is partly encoded in relative coefficients-especially phases-of the terms representing macroscopically different geometries. In another description in which the reference point enters into the black hole horizon at late times, an S-matrix description in the asymptotically Minkowski spacetime is not applicable, but it still allows for an "S-matrix'' description in the full quantum gravitational Hilbert space including singularity states. Relations between different descriptions are given by unitary transformations acting on the full Hilbert space, and they in general involve superpositions of "distant'' and "infalling'' descriptions. Despite the intrinsically quantum mechanical nature of the black hole state, measurements performed by a classical physical observer are consistent with those implied by general relativity. In particular, the recently-considered firewall phenomenon can occur only for an exponentially fine-tuned (and intrinsically quantum mechanical) initial state, analogous to an entropy decreasing process in a system with large degrees of freedom. DOI: 10.1103/PhysRevD.87.084050
C1 [Nomura, Yasunori; Varela, Jaime] MIT, Dept Phys, Ctr Theoret Phys, Cambridge, MA 02139 USA.
   [Nomura, Yasunori; Varela, Jaime] MIT, Nucl Sci Lab, Cambridge, MA 02139 USA.
   [Nomura, Yasunori; Varela, Jaime; Weinberg, Sean J.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Dept Phys, Berkeley Ctr Theoret Phys, Berkeley, CA 94720 USA.
   [Nomura, Yasunori; Varela, Jaime; Weinberg, Sean J.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Theoret Phys Grp, Berkeley, CA 94720 USA.
RP Nomura, Y (reprint author), MIT, Dept Phys, Ctr Theoret Phys, Cambridge, MA 02139 USA.
OI Nomura, Yasunori/0000-0002-1497-1479
NR 39
TC 25
Z9 25
U1 0
U2 3
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 2470-0010
EI 2470-0029
J9 PHYS REV D
JI Phys. Rev. D
PD APR 19
PY 2013
VL 87
IS 8
AR 084050
DI 10.1103/PhysRevD.87.084050
PG 17
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 129HI
UT WOS:000317829400002
ER

PT J
AU Workman, RL
   Paris, MW
   Briscoe, WJ
   Strakovsky, II
AF Workman, Ron L.
   Paris, Mark W.
   Briscoe, William J.
   Strakovsky, Igor I.
TI Comment on "Well-Established Nucleon Resonances Revisited by
   Double-Polarization Measurements"
SO PHYSICAL REVIEW LETTERS
LA English
DT Editorial Material
C1 [Workman, Ron L.; Briscoe, William J.; Strakovsky, Igor I.] George Washington Univ, Dept Phys, Data Anal Ctr, Inst Nucl Studies, Washington, DC 20052 USA.
   [Paris, Mark W.] Los Alamos Natl Lab, Div Theory, Los Alamos, NM 87545 USA.
RP Workman, RL (reprint author), George Washington Univ, Dept Phys, Data Anal Ctr, Inst Nucl Studies, Washington, DC 20052 USA.
OI Paris, Mark/0000-0003-0471-7896
NR 5
TC 6
Z9 6
U1 0
U2 0
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD APR 19
PY 2013
VL 110
IS 16
AR 169101
DI 10.1103/PhysRevLett.110.169101
PG 1
WC Physics, Multidisciplinary
SC Physics
GA 129CC
UT WOS:000317815000015
PM 23679651
ER

PT J
AU Zhang, GG
   Canning, A
   Gronbech-Jensen, N
   Derenzo, S
   Wang, LW
AF Zhang, Gaigong
   Canning, Andrew
   Gronbech-Jensen, Niels
   Derenzo, Stephen
   Wang, Lin-Wang
TI Shallow Impurity Level Calculations in Semiconductors Using Ab Initio
   Methods
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID TOTAL-ENERGY CALCULATIONS; AUGMENTED-WAVE METHOD; DIELECTRIC THEORY;
   BINDING-ENERGIES; ELECTRONIC-STRUCTURE; MOLECULAR-DYNAMICS; BASIS-SET;
   DEFECTS; SI; GE
AB An ab initio method is presented to calculate shallow impurity levels in bulk semiconductors. This method combines the GW calculation for the treatment of the central-cell potential with a potential patching method for large systems (with 64 000 atoms) to describe the impurity state wave functions. The calculated acceptor levels in Si, GaAs, and an isovalent bound state of GaP are in excellent agreement with experiments with a root-mean-square error of 8.4 meV. DOI: 10.1103/PhysRevLett.110.166404
C1 [Zhang, Gaigong; Canning, Andrew; Gronbech-Jensen, Niels] Univ Calif Davis, Dept Appl Sci, Davis, CA 95616 USA.
   [Canning, Andrew; Gronbech-Jensen, Niels] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Computat Res Div, Berkeley, CA 94720 USA.
   [Derenzo, Stephen] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Life Sci, Berkeley, CA 94720 USA.
   [Wang, Lin-Wang] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94720 USA.
RP Wang, LW (reprint author), Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94720 USA.
EM lwwang@lbl.gov
FU Office of Basic Energy Sciences (BES), Materials Sciences and
   Engineering (MSE) Division of the U.S. Department of Energy (DOE)
   [DE-AC02-05CH11231]; Office of Science of the U.S. Department of Energy
FX This work was supported by the Director, Office of Science, Office of
   Biological and Environmental Research (BER), Biological Systems Science
   Division (Zhang, Canning, Derenzo) and the Office of Basic Energy
   Sciences (BES), Materials Sciences and Engineering (MSE) Division (Wang)
   of the U.S. Department of Energy (DOE) under Contract No.
   DE-AC02-05CH11231. It used resources of the National Energy Research
   Scientific Computing Center, which is supported by the Office of Science
   of the U.S. Department of Energy.
NR 47
TC 9
Z9 9
U1 0
U2 40
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD APR 19
PY 2013
VL 110
IS 16
AR 166404
DI 10.1103/PhysRevLett.110.166404
PG 5
WC Physics, Multidisciplinary
SC Physics
GA 129CC
UT WOS:000317815000007
PM 23679628
ER

PT J
AU Wee, SH
   Gao, YF
   Zuev, YL
   More, KL
   Meng, JY
   Zhong, JX
   Stocks, GM
   Goyal, A
AF Wee, Sung Hun
   Gao, Yanfei
   Zuev, Yuri L.
   More, Karren L.
   Meng, Jianyong
   Zhong, Jianxin
   Stocks, George M.
   Goyal, Amit
TI Self-Assembly of Nanostructured, Complex, Multication Films via
   Spontaneous Phase Separation and Strain-Driven Ordering
SO ADVANCED FUNCTIONAL MATERIALS
LA English
DT Article
DE self-assembly; epitaxial nanocomposite films; strain-driven ordering;
   superconductors; flux-pinning
ID NANODOTS
AB Spontaneous self-assembly of a multication nanophase in another multication matrix phase is a promising bottom-up approach to fabricate novel, nanocomposite structures for a range of applications. In an effort to understand the mechanisms for such self-assembly, complimentary experimental and theoretical studies are reported to first understand and then control or guide the self-assembly of insulating BaZrO3 (BZO) nanodots within REBa2Cu3O7 (RE = rare earth elements including Y, REBCO) superconducting films. The strain field developed around BZO nanodots embedded in the REBCO matrix is a key driving force dictating the self-assembly of BZO nanodots along REBCO c-axis. The size selection and spatial ordering of BZO self-assembly are simulated using thermodynamic and kinetic models. The BZO self-assembly is controllable by tuning the interphase strain field. REBCO superconducting films with BZO defect arrays self-assembled to align in both vertical (REBCO c-axis) and horizontal (REBCO ab-planes) directions result in the maximized pinning and Jc performance for all field angles with smaller angular Jc anisotropy. The work has broad implications for the fabrication of controlled self-assembled nanostructures for a range of applications via strain-tuning.
C1 [Wee, Sung Hun; Gao, Yanfei; More, Karren L.; Zhong, Jianxin; Stocks, George M.; Goyal, Amit] Oak Ridge Natl Lab, Mat Sci & Technol Div, Oak Ridge, TN 37831 USA.
   [Gao, Yanfei; Meng, Jianyong] Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USA.
   [Zuev, Yuri L.] Univ Tennessee, Dept Phys, Knoxville, TN 37996 USA.
RP Wee, SH (reprint author), Oak Ridge Natl Lab, Mat Sci & Technol Div, Oak Ridge, TN 37831 USA.
EM goyala@ornl.gov
RI More, Karren/A-8097-2016; Stocks, George Malcollm/Q-1251-2016; Gao,
   Yanfei/F-9034-2010
OI More, Karren/0000-0001-5223-9097; Stocks, George
   Malcollm/0000-0002-9013-260X; Gao, Yanfei/0000-0003-2082-857X
FU US Department of Energy, Office of Electricity Delivery and Energy
   Reliability (DOE-OE); Laboratory Directed Research and Development
   (LDRD) funds; LDRD funds; DOE-OE; Division of Scientific User
   Facilities, Office of Basic Energy Sciences, U.S. Department of Energy
FX The authors thank V. Selvamanickam at SuperPower Inc. for providing the
   Hastelloy substrates with an IBAD MgO layer/Homoepitaxial MgO
   layer/Epitaxial LaMnO<INF>3</INF>. This research was sponsored by US
   Department of Energy, Office of Electricity Delivery and Energy
   Reliability (DOE-OE) and by the Laboratory Directed Research and
   Development (LDRD) funds. Y.G., J.M., J.Z., and G. M. S. were supported
   by LDRD funds, S. H. W. was supported by DOE-OE, and A. G. was supported
   jointly by DOE-OE and LDRD funds. A portion of this research was
   conducted at the SHaRE User Facility, which is sponsored by the Division
   of Scientific User Facilities, Office of Basic Energy Sciences, U.S.
   Department of Energy.
NR 19
TC 12
Z9 12
U1 3
U2 59
PU WILEY-V C H VERLAG GMBH
PI WEINHEIM
PA POSTFACH 101161, 69451 WEINHEIM, GERMANY
SN 1616-301X
EI 1616-3028
J9 ADV FUNCT MATER
JI Adv. Funct. Mater.
PD APR 19
PY 2013
VL 23
IS 15
BP 1912
EP 1918
DI 10.1002/adfm.201202101
PG 7
WC Chemistry, Multidisciplinary; Chemistry, Physical; Nanoscience &
   Nanotechnology; Materials Science, Multidisciplinary; Physics, Applied;
   Physics, Condensed Matter
SC Chemistry; Science & Technology - Other Topics; Materials Science;
   Physics
GA 127ID
UT WOS:000317690800007
ER

PT J
AU Mauger, SA
   Chang, LL
   Friedrich, S
   Rochester, CW
   Huang, DM
   Wang, P
   Moule, AJ
AF Mauger, Scott A.
   Chang, Lilian
   Friedrich, Stephan
   Rochester, Christopher W.
   Huang, David M.
   Wang, Peng
   Moule, Adam J.
TI Self-Assembly of Selective Interfaces in Organic Photovoltaics
SO ADVANCED FUNCTIONAL MATERIALS
LA English
DT Article
DE vertical segregation; solvent additives; surface energy; morphology;
   organic photovoltaic devices
ID HETEROJUNCTION SOLAR-CELLS; VERTICAL PHASE-SEPARATION; DEVICE
   CHARACTERISTICS; SURFACE-ENERGY; ACTIVE LAYERS; BLEND FILMS; THIN-FILMS;
   MORPHOLOGY; POLYMER; POLY(3-HEXYLTHIOPHENE)
AB The composition of polymer-fullerene blends is a critical parameter for achieving high efficiencies in bulk-heterojunction (BHJ) organic photovoltaics. Achieving the right materials distribution is crucial for device optimization as it greatly influences charge-carrier mobility. The effect of the vertical concentration profile of materials in spin-coated BHJs on device properties has stirred particularly vigorous debate. Despite available literature on this subject, the results are often contradictory and inconsistent, likely due to differences in sample preparation and experimental considerations. To reconcile published results, the influence of heating, surface energy, and solvent additives on vertical segregation and doping in polymer-fullerene BHJ organic photovoltaics are studied using neutron reflectometry and near edge X-ray absorption fine structure spectroscopy. It is shown that surface energies and solvent additives greatly impact heat-induced vertical segregation. Interface charging due to Fermi level mismatch increases (6,6)-phenyl-C61-butyric acid methyl ester (PCBM)-enrichment at the BHJ/cathode interface. Currentvoltage measurements show that self-assembly of interfaces affects the open-circuit voltage, resulting in clear changes to the power conversion efficiency.
C1 [Mauger, Scott A.; Chang, Lilian; Rochester, Christopher W.; Moule, Adam J.] Univ Calif Davis, Dept Chem Engn & Mat Sci, Davis, CA 95616 USA.
   [Friedrich, Stephan] Lawrence Livermore Natl Lab, Adv Detector Grp, Livermore, CA 94550 USA.
   [Huang, David M.] Univ Adelaide, Sch Chem & Phys, Adelaide, SA 5005, Australia.
   [Wang, Peng] Los Alamos Natl Lab, Manuel Lujan Neutron Scattering Ctr, Los Alamos, NM 87545 USA.
RP Mauger, SA (reprint author), Univ Calif Davis, Dept Chem Engn & Mat Sci, Davis, CA 95616 USA.
EM amoule@ucdavis.edu
RI Huang, David/E-6830-2010; 
OI Huang, David/0000-0003-2048-4500; Moule, Adam/0000-0003-1354-3517
FU U.S. Department of Energy EERE Solar America Initiative
   [DE-FG3608GO18018]; Nation Science Foundation [0933435]; ConocoPhilips;
   DOE Office of Basic Energy Sciences; Los Alamos National Laboratory
   under DOE [DE-AC52-06NA25396]; U. S. Department of Energy by Lawrence
   Livermore National Laboratory [DE-AC52-07NA27344]
FX This work was supported by the US Department of Energy EERE Solar
   America Initiative under Contract No. DE-FG3608GO18018. Funding for S.
   A. M. and C. W. R. provided by the U.S. Department of Energy EERE Solar
   America Initiative under Contract No. DE-FG3608GO18018. Funding for L.
   C. provided by the Nation Science Foundation Energy for Sustainability
   Program under Award No. 0933435 and ConocoPhilips. This work benefited
   from the use of the Lujan Neutron Scattering Center at LANSCE funded by
   the DOE Office of Basic Energy Sciences and Los Alamos National
   Laboratory under DOE Contract DE-AC52-06NA25396 and were conducted under
   Proposal Nos. 20102146 and 20111057. Part of this work was performed
   under the auspices of U. S. Department of Energy by Lawrence Livermore
   National Laboratory under Contract DE-AC52-07NA27344. The authors would
   also like to thank Elke Arenholz for support with the NEXAFS
   measurements at the Advanced Light Source beam lines 4.0.2 and 6.3.1.
NR 51
TC 34
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U1 5
U2 149
PU WILEY-V C H VERLAG GMBH
PI WEINHEIM
PA BOSCHSTRASSE 12, D-69469 WEINHEIM, GERMANY
SN 1616-301X
J9 ADV FUNCT MATER
JI Adv. Funct. Mater.
PD APR 19
PY 2013
VL 23
IS 15
BP 1935
EP 1946
DI 10.1002/adfm.201201874
PG 12
WC Chemistry, Multidisciplinary; Chemistry, Physical; Nanoscience &
   Nanotechnology; Materials Science, Multidisciplinary; Physics, Applied;
   Physics, Condensed Matter
SC Chemistry; Science & Technology - Other Topics; Materials Science;
   Physics
GA 127ID
UT WOS:000317690800010
ER

PT J
AU Hug, LA
   Maphosa, F
   Leys, D
   Loffler, FE
   Smidt, H
   Edwards, EA
   Adrian, L
AF Hug, Laura A.
   Maphosa, Farai
   Leys, David
   Loeffler, Frank E.
   Smidt, Hauke
   Edwards, Elizabeth A.
   Adrian, Lorenz
TI Overview of organohalide-respiring bacteria and a proposal for a
   classification system for reductive dehalogenases
SO PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES
LA English
DT Review
DE organohalide respiration; reductive dehalogenase; phylogenetics
ID DEHALOCOCCOIDES SP STRAIN; VINYL-CHLORIDE REDUCTASE;
   DESULFITOBACTERIUM-FRAPPIERI PCP-1; STRICTLY ANAEROBIC BACTERIUM;
   MULTIPLE SEQUENCE ALIGNMENT; COMPLETE GENOME SEQUENCE; BEST-FIT MODELS;
   DEHALOSPIRILLUM-MULTIVORANS; ENRICHMENT CULTURE; DEHALOBACTER-RESTRICTUS
AB Organohalide respiration is an anaerobic bacterial respiratory process that uses halogenated hydrocarbons as terminal electron acceptors during electron transport-based energy conservation. This dechlorination process has triggered considerable interest for detoxification of anthropogenic groundwater contaminants. Organohalide-respiring bacteria have been identified from multiple bacterial phyla, and can be categorized as obligate and non-obligate organohalide respirers. The majority of the currently known organohalide-respiring bacteria carry multiple reductive dehalogenase genes. Analysis of a curated set of reductive dehalogenases reveals that sequence similarity and substrate specificity are generally not correlated, making functional prediction from sequence information difficult. In this article, an orthologue-based classification system for the reductive dehalogenases is proposed to aid integration of new sequencing data and to unify terminology.
C1 [Hug, Laura A.] Univ Toronto, Dept Cell & Syst Biol, Toronto, ON, Canada.
   [Maphosa, Farai; Smidt, Hauke] Wageningen Univ, Microbiol Lab, NL-6700 AP Wageningen, Netherlands.
   [Leys, David] Univ Manchester, Fac Life Sci, Manchester, Lancs, England.
   [Loeffler, Frank E.] Univ Tennessee, Dept Microbiol, Knoxville, TN 37996 USA.
   [Loeffler, Frank E.] Univ Tennessee, Dept Civil & Environm Engn, Knoxville, TN USA.
   [Loeffler, Frank E.] Oak Ridge Natl Lab, Biosci Div, Oak Ridge, TN USA.
   [Edwards, Elizabeth A.] Univ Toronto, Dept Chem Engn & Appl Chem, Toronto, ON, Canada.
   [Adrian, Lorenz] Helmholtzzentrum Umweltforsch UFZ, Dept Isotope Biogeochem, Leipzig, Germany.
RP Smidt, H (reprint author), Wageningen Univ, Microbiol Lab, NL-6700 AP Wageningen, Netherlands.
EM hauke.smidt@wur.nl
RI Loeffler, Frank/M-8216-2013; 
OI Smidt, Hauke/0000-0002-6138-5026; Edwards,
   Elizabeth/0000-0002-8071-338X; Adrian, Lorenz/0000-0001-8205-0842
FU Government of Canada through NSERC; Genome Canada; Ontario Genomics
   Institute [2009-OGI-ABC-1405]; Government of Ontario through the ORF-GL2
   program; United States Department of Defence through the Strategic
   Environmental Research and Development Program (SERDP) [ER-1586]; The
   Netherlands Genomics Initiative through the Ecogenomics project; The
   Netherlands Genomics Initiative through the ECOLINC project; European
   Research Council (ERC); German Research Foundation [DFG-FOR1530]
FX The authors acknowledge the KAVLI centre meeting for generating the
   impetus for this themed issue. Support was provided to L.A.H. and E.A.E.
   by the Government of Canada through NSERC, Genome Canada and the Ontario
   Genomics Institute (2009-OGI-ABC-1405) and the Government of Ontario
   through the ORF-GL2 program. Support to L.A.H., E.A.E. and F.E.L. was
   provided by the United States Department of Defence through the
   Strategic Environmental Research and Development Program (SERDP)
   (project ER-1586). The Netherlands Genomics Initiative is acknowledged
   for support to F.M. and H.S. through the Ecogenomics and ECOLINC
   projects. L.A. and D.L. are supported by the European Research Council
   (ERC) and L.A. acknowledges further support by the German Research
   Foundation, DFG-FOR1530. We further acknowledge the helpful suggestions
   and comments from two anonymous reviewers.
NR 104
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U1 8
U2 108
PU ROYAL SOC
PI LONDON
PA 6-9 CARLTON HOUSE TERRACE, LONDON SW1Y 5AG, ENGLAND
SN 0962-8436
J9 PHILOS T R SOC B
JI Philos. Trans. R. Soc. B-Biol. Sci.
PD APR 19
PY 2013
VL 368
IS 1616
SI SI
AR 20120322
DI 10.1098/rstb.2012.0322
PG 10
WC Biology
SC Life Sciences & Biomedicine - Other Topics
GA 104LU
UT WOS:000315995300008
PM 23479752
ER

PT J
AU Yan, J
   Im, J
   Yang, Y
   Loffler, FE
AF Yan, Jun
   Im, Jeongdae
   Yang, Yi
   Loeffler, Frank E.
TI Guided cobalamin biosynthesis supports Dehalococcoides mccartyi
   reductive dechlorination activity
SO PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES
LA English
DT Article
DE reductive dechlorination; organohalide respiration; vitamin B12;
   Dehalococcoides
ID ETHENOGENES STRAIN 195; SPOROMUSA-OVATA; DEHALOSPIRILLUM MULTIVORANS;
   VINYL-CHLORIDE; TETRACHLOROETHENE; DEHALOGENASE; CORRINOIDS; BACTERIUM;
   VITAMIN-B-12; TRICHLOROETHENE
AB Dehalococcoides mccartyi strains are corrinoid-auxotrophic Bacteria and axenic cultures that require vitamin B-12 (CN-Cbl) to conserve energy via organohalide respiration. Cultures of D. mccartyi strains BAV1, GT and FL2 grown with limiting amounts of 1 mu g l(-1) CN-Cbl quickly depleted CN-Cbl, and reductive dechlorination of polychlorinated ethenes was incomplete leading to vinyl chloride (VC) accumulation. In contrast, the same cultures amended with 25 mu g l(-1) CN-Cbl exhibited up to 2.3-fold higher dechlorination rates, 2.8-9.1-fold increased growth yields, and completely consumed growth-supporting chlorinated ethenes. To explore whether known cobamide-producing microbes supply Dehalococcoides with the required corrinoid cofactor, co-culture experiments were performed with the methanogen Methanosarcina barkeri strain Fusaro and two acetogens, Sporomusa ovata and Sporomusa sp. strain KB-1, as Dehalococcoides partner populations. During growth with H-2/CO2, M. barkeri axenic cultures produced 4.2 +/- 0.1 mu g l(-1) extracellular cobamide (factor III), whereas the Sporomusa cultures produced phenolyl- and p-cresolyl-cobamides. Neither factor III nor the phenolic cobamides supported Dehalococcoides reductive dechlorination activity suggesting that M. barkeri and the Sporomusa sp. cannot fulfil Dehalococcoides' nutritional requirements. Dehalococcoides dechlorination activity and growth occurred in M. barkeri and Sporomusa sp. co-cultures amended with 10 mu M 5',6'-dimethylbenzimidazole (DMB), indicating that a cobalamin is a preferred corrinoid cofactor of strains BAV1, GT and FL2 when grown with chlorinated ethenes as electron acceptors. Even though the methanogen and acetogen populations tested did not produce cobalamin, the addition of DMB enabled guided biosynthesis and generated a cobalamin that supported Dehalococcoides' activity and growth. Guided cobalamin biosynthesis may offer opportunities to sustain and enhance Dehalococcoides activity in contaminated subsurface environments.
C1 [Yan, Jun; Im, Jeongdae; Loeffler, Frank E.] Univ Tennessee, Dept Microbiol, Knoxville, TN 37996 USA.
   [Yan, Jun; Im, Jeongdae; Yang, Yi; Loeffler, Frank E.] Univ Tennessee, Dept Civil & Environm Engn, Knoxville, TN 37996 USA.
   [Loeffler, Frank E.] Oak Ridge Natl Lab, Biosci Div, Oak Ridge, TN 37831 USA.
RP Loffler, FE (reprint author), Univ Tennessee, Dept Microbiol, Knoxville, TN 37996 USA.
EM frank.loeffler@utk.edu
RI Loeffler, Frank/M-8216-2013; Yang, Yi/M-5706-2014; YI, Yang/C-8992-2009
OI Yang, Yi/0000-0002-3519-5472; YI, Yang/0000-0002-3519-5472
FU Strategic Environmental Research and Development Program (SERDP);
   National Science Foundation (NSF)
FX We thank Dr Kevin Sowers, University of Maryland, for providing
   Methanosarcina barkeri strain Fusaro, and Dr Kelly Nevin, University of
   Massachusetts, for providing Sporomusa ovata. We are grateful to Drs
   Elizabeth Edwards and Laura Hug, University of Toronto, for providing
   the Sporomusa sp. strain KB-1 culture. This work was supported by the
   Strategic Environmental Research and Development Program (SERDP) and the
   National Science Foundation (NSF).
NR 40
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U1 0
U2 32
PU ROYAL SOC
PI LONDON
PA 6-9 CARLTON HOUSE TERRACE, LONDON SW1Y 5AG, ENGLAND
SN 0962-8436
J9 PHILOS T R SOC B
JI Philos. Trans. R. Soc. B-Biol. Sci.
PD APR 19
PY 2013
VL 368
IS 1616
SI SI
AR 20120320
DI 10.1098/rstb.2012.0320
PG 10
WC Biology
SC Life Sciences & Biomedicine - Other Topics
GA 104LU
UT WOS:000315995300006
PM 23479750
ER

PT J
AU Weigand, M
   Civale, L
   Baca, FJ
   Kim, J
   Bud'ko, SL
   Canfield, PC
   Maiorov, B
AF Weigand, M.
   Civale, L.
   Baca, F. J.
   Kim, Jeehoon
   Bud'ko, S. L.
   Canfield, P. C.
   Maiorov, B.
TI Strong enhancement of the critical current at the antiferromagnetic
   transition in ErNi2B2C single crystals
SO PHYSICAL REVIEW B
LA English
DT Article
ID SUPERCONDUCTIVITY; STATE; TEMPERATURE; MAGNETISM; MULTILAYERS;
   COEXISTENCE; YNI2B2C; ORDER
AB We report on transport and magnetization measurements of the critical current density J(c) in ErNi2B2C single crystals that show strongly enhanced vortex pinning at the Neel temperature T-N and low applied fields. The height of the observed J(c) peak decreases with increasing magnetic field in clear contrast with that of the peak effect found at the upper critical field. Angular transport measurements of J(c) revealed the correlated nature of this pinning enhancement, which we attribute to the formation of antiphase boundaries at T-N. DOI: 10.1103/PhysRevB.87.140506
C1 [Weigand, M.; Civale, L.; Baca, F. J.; Kim, Jeehoon; Maiorov, B.] Los Alamos Natl Lab, Mat Phys & Applicat Div, Los Alamos, NM 87545 USA.
   [Bud'ko, S. L.; Canfield, P. C.] US DOE, Ames Lab, Ames, IA 50011 USA.
   [Bud'ko, S. L.; Canfield, P. C.] Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA.
RP Weigand, M (reprint author), Los Alamos Natl Lab, Mat Phys & Applicat Div, POB 1663, Los Alamos, NM 87545 USA.
RI Weigand, Marcus/E-7173-2010; Canfield, Paul/H-2698-2014; 
OI Weigand, Marcus/0000-0002-8745-7876; Maiorov, Boris/0000-0003-1885-0436;
   Civale, Leonardo/0000-0003-0806-3113
FU Los Alamos LDRD Program [20110138ER]; US Department of Energy, Office of
   Basic Energy Science, Division of Materials Sciences and Engineering; US
   Department of Energy by Iowa State University [DE-AC02-07CH11358]
FX The authors are grateful to S. Lin, C. D. Batista, L. N. Bulaevskii, and
   R. Prozorov for useful discussions and to V. Pavlenko for help with
   sample preparation. This publication was made possible by funding from
   the Los Alamos LDRD Program, Project No. 20110138ER. The transport
   measurements were performed in part at the Center for Integrated
   Nanotechnologies and at the National High Magnetic Field Laboratory,
   both at Los Alamos National Laboratory. Work at Ames Laboratory (P. C.
   C. and S. L. B.) was supported by the US Department of Energy, Office of
   Basic Energy Science, Division of Materials Sciences and Engineering.
   Ames Laboratory is operated for the US Department of Energy by Iowa
   State University under Contract No. DE-AC02-07CH11358.
NR 44
TC 5
Z9 5
U1 0
U2 6
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 2469-9950
EI 2469-9969
J9 PHYS REV B
JI Phys. Rev. B
PD APR 18
PY 2013
VL 87
IS 14
AR 140506
DI 10.1103/PhysRevB.87.140506
PG 5
WC Physics, Condensed Matter
SC Physics
GA 129ER
UT WOS:000317822200001
ER

PT J
AU Beste, A
   Buchanan, AC
AF Beste, Ariana
   Buchanan, A. C., III
TI Computational Investigation of the Pyrolysis Product Selectivity for
   alpha-Hydroxy Phenethyl Phenyl Ether and Phenethyl Phenyl Ether:
   Analysis of Substituent Effects and Reactant Conformer Selection
SO JOURNAL OF PHYSICAL CHEMISTRY A
LA English
DT Article
ID LIGNIN MODEL COMPOUNDS; BOND-DISSOCIATION ENTHALPIES; DENSITY-FUNCTIONAL
   THEORY; KINETIC-ANALYSIS; LINKAGES; PREDICTION; MECHANISM; COMPOUND;
   RADICALS; BIOFUELS
AB Using computational methods, we determine product selectivities for the pyrolysis of two model compounds for the beta-O-4 linkage in lignin: phenethyl phenyl ether (PPE) and alpha-hydroxy phenethyl phenyl ether (alpha-hydroxy PPE). We investigate the dependence of the product selectivities on the number of reactant conformers included. Utilizing density functional theory in combination with transition state theory, we obtain rate constants for hydrogen abstraction reactions by the key chain-carrying radicals, which determine the product selectivity within a steady-state kinetic model. The inclusion of the energetically second lowest reactant conformer of PPE and alpha-hydroxy PPE has a large effect on the product selectivity. The final product selectivity computed for PPE agrees well with experiment. We find that the alpha-hydroxy substituent affects energetic as well as entropic contributions to the rate constant differently for alternative pathways of hydrogen abstraction and, thereby, significantly alters product distributions.
C1 [Beste, Ariana] Univ Tennessee, Joint Inst Computat Sci, Oak Ridge, TN 37831 USA.
   [Beste, Ariana] Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Oak Ridge, TN 37831 USA.
   [Buchanan, A. C., III] Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN 37831 USA.
RP Beste, A (reprint author), Univ Tennessee, Joint Inst Computat Sci, Oak Ridge, TN 37831 USA.
EM bestea@ornl.gov
OI Beste, Ariana/0000-0001-9132-792X
FU Division of Chemical Sciences, Geosciences, Office of Basic Energy
   Sciences, U.S. Department of Energy; Oak Ridge National Laboratory by
   the Scientific User Facilities Division, Office of Basic Energy
   Sciences, U.S. Department of Energy;  [DE-AC05-00OR22725]
FX This research was sponsored by the Division of Chemical Sciences,
   Geosciences, Office of Basic Energy Sciences, U.S. Department of Energy
   and was performed in part using the resources of the National Center for
   Computational Sciences at Oak Ridge National Laboratory under contract
   DE-AC05-00OR22725. A portion of this research was conducted at the
   Center for Nanophase Materials Sciences, which is sponsored at Oak Ridge
   National Laboratory by the Scientific User Facilities Division, Office
   of Basic Energy Sciences, U.S. Department of Energy.
NR 37
TC 13
Z9 15
U1 0
U2 45
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1089-5639
J9 J PHYS CHEM A
JI J. Phys. Chem. A
PD APR 18
PY 2013
VL 117
IS 15
BP 3235
EP 3242
DI 10.1021/jp4015004
PG 8
WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical
SC Chemistry; Physics
GA 130WK
UT WOS:000317950600012
PM 23514452
ER

PT J
AU Borodin, O
   Zhuang, GRV
   Ross, PN
   Xu, K
AF Borodin, Oleg
   Zhuang, Guorong V.
   Ross, Philip N.
   Xu, Kang
TI Molecular Dynamics Simulations and Experimental Study of Lithium Ion
   Transport in Dilithium Ethylene Dicarbonate
SO JOURNAL OF PHYSICAL CHEMISTRY C
LA English
DT Article
ID SOLID-ELECTROLYTE INTERPHASE; SOLVATION SHEATH STRUCTURE; AB-INITIO
   CALCULATIONS; DOT-O INTERACTIONS; LI-ION; NONAQUEOUS ELECTROLYTES;
   GRAPHITE/ELECTROLYTE INTERFACE; BATTERY ELECTROLYTES; PROPYLENE
   CARBONATE; ALKYL DICARBONATES
AB Understanding the properties of the solid electrolyte interphase (SET) of lithium batteries is important for minimizing interfacial resistance and improving battery safety and cycling. Ion transport has been investigated in the dilithium ethylene dicarbonate (Li2EDC) component of the SEI by impedance spectroscopy and molecular dynamics (MD) simulations employing a revised many-body polarizable APPLE&P force field. The developed force field accurately described the binding energies in LiCH3CO3, its dimer, and Li2EDC calculated at the G4MP2 and MP2 levels. M05-2X and LC-omega PBE functionals predicted too high binding energy in lithium alkyl carbonates compared to the G4MP2 results, while the MP2 and M06-L predictions agreed well with the G4MP2 data. The conductivity of Li2EDC at room temperature was found to be 10(-9) S/cm from impedance measurements and extrapolation of MD simulation results. A near Arrhenius temperature dependence of Li2EDC's conductivity was found in the MD simulations with an activation energy ranging from 64 to 84 kJ/mol. At room temperature, the lithium transport was subdiffusive on time scales shorter than similar to 10(-2) s in MD simulations corresponding to the onset of the plateau of resistivity vs frequency occurring at frequencies lower than 10(2) Hz. The influence of Li2EDC ordering on the ion transport was investigated by contrasting supercooled amorphous melts and ordered material. At 393 K Li+ transport was heterogeneous, showing chainlike and looplike Li+ correlated displacements. The non-Gaussianity of Li+ transport was examined. The influence of polarization on the structure of the lithium coordination shell and ion transport has been investigated in the molten phase of Li2EDC and contrasted with the previous results obtained for room-temperature ionic liquids (RTILs). Nonpolarizable Li2EDC exhibited orders of magnitude slower dynamics below 600 K and a higher activation energy for the Li+ diffusion coefficient. Initial simulations of Li2EDC dissolved in an EC:DMC(3:7)/LiPF6 liquid electrolyte were performed at 450 K and showed a strong aggregation of Li2EDC consistent with its phase separation from the electrolyte. The plasticizing effects of carbonate electrolyte on Li2EDC dynamics were examined.
C1 [Borodin, Oleg; Xu, Kang] USA, Res Lab, Electrochem Branch, Sensors & Electron Devices Directorate, Adelphi, MD 20783 USA.
   [Zhuang, Guorong V.; Ross, Philip N.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
RP Borodin, O (reprint author), USA, Res Lab, Electrochem Branch, Sensors & Electron Devices Directorate, 2800 Powder Mill Rd, Adelphi, MD 20783 USA.
EM oleg.a.borodin.civ@mail.mil
RI Borodin, Oleg/B-6855-2012
OI Borodin, Oleg/0000-0002-9428-5291
FU U.S. Department of Energy [DE-IA01-11EE003413]; U.S. Army Research
   Laboratory (ARL) [DE-IA01-11EE003413]
FX This work was supported via an Interagency Agreement between the U.S.
   Department of Energy and the U.S. Army Research Laboratory (ARL) under
   DE-IA01-11EE003413 for the Office of Vehicle Technologies Programs
   within Batteries for Advanced Transportation Technologies (BATT) and ABR
   Program. Computational resources from DoD's High Performance Computing
   Modernization Program's (HPCMP) program are acknowledged. Insightful
   discussions with T. Richard Jow (ARL) are highly appreciated.
NR 60
TC 30
Z9 30
U1 6
U2 168
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1932-7447
J9 J PHYS CHEM C
JI J. Phys. Chem. C
PD APR 18
PY 2013
VL 117
IS 15
BP 7433
EP 7444
DI 10.1021/jp4000494
PG 12
WC Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science,
   Multidisciplinary
SC Chemistry; Science & Technology - Other Topics; Materials Science
GA 130WH
UT WOS:000317950300004
ER

PT J
AU Mhatre, BS
   Pushkarev, V
   Holsclaw, B
   Lawton, TJ
   Sykes, ECH
   Gellman, AJ
AF Mhatre, B. S.
   Pushkarev, V.
   Holsclaw, B.
   Lawton, T. J.
   Sykes, E. C. H.
   Gellman, A. J.
TI A Window on Surface Explosions: Tartaric Acid on Cu(110)
SO JOURNAL OF PHYSICAL CHEMISTRY C
LA English
DT Article
ID CHIRAL METAL-SURFACES; AUTOCATALYTIC DECOMPOSITION; ACETIC-ACID;
   FORMIC-ACID; ACETATE FORMATION; CLEAN NI(110); RH CRYSTALS; MALIC-ACID;
   ADSORPTION; WATER
AB Autocatalytic reaction mechanisms are observed in a range of important chemical processes including catalysis, radical-mediated explosions, and biosynthesis. Because of their complexity, the microscopic details of autocatalytic reaction mechanisms have been difficult to study on surfaces and heterogeneous catalysts. Autocatalytic decomposition reactions of S,S- and R,R-tartaric acid (TA) adsorbed on Cu(110) offer molecular-level insight into aspects of these processes, which until now, were largely a matter of speculation. The decomposition of TA/Cu(110) is initiated by a slow, irreversible process that forms vacancies in the adsorbed TA layer, followed by a vacancy-mediated, explosive decomposition process that yields CO2 and small hydrocarbon products. Initiation of the explosive decomposition of TA/Cu(110) has been studied by measurement of the reaction kinetics, time-resolved low energy electron diffraction (LEED), and time-resolved scanning tunneling microscopy (STM). Initiation results in a decrease in the local coverage of TA and a concomitant increase in the areal vacancy concentration. Observations of explosive TA decomposition on the Cu(651)(S) surface suggest that initiation does not occur at structural defects in the surface, as has been suggested in the past. Once the vacancy concentration reaches a critical value, the explosive, autocatalytic decomposition step dominates the TA decomposition rate. The onset of the explosive decomposition of TA on Cu(110) is accompanied by the extraction of Cu atoms from the surface to form a (+/- 6,7; -/+ 2,1) overlayer that is readily observable using LEED and STM. The explosive decomposition step is second-order in vacancy concentration and accelerates with increasing extent of reaction.
C1 [Mhatre, B. S.; Pushkarev, V.; Holsclaw, B.; Gellman, A. J.] Carnegie Mellon Univ, Dept Chem Engn, Pittsburgh, PA 15213 USA.
   [Gellman, A. J.] US DOE, Natl Energy Technol Lab, Pittsburgh, PA 15236 USA.
   [Lawton, T. J.; Sykes, E. C. H.] Tufts Univ, Dept Chem, Medford, MA 02155 USA.
RP Gellman, AJ (reprint author), Carnegie Mellon Univ, Dept Chem Engn, Pittsburgh, PA 15213 USA.
EM gellman@cmu.edu
RI Gellman, Andrew/M-2487-2014; 
OI Gellman, Andrew/0000-0001-6618-7427; Holsclaw, Brian/0000-0002-7501-8411
FU NSF [CHE-1012358, CHE-1012307]
FX This work has been supported by the NSF through a collaborative grant
   CHE-1012358 (B.M., V.P., B.H., A.J.G.) and CHE-1012307 (TJ.L.,
   E.C.H.S.). A.J.G. gratefully acknowledges the hospitality of the
   Fritz-Haber Institute during the writing of this manuscript.
NR 58
TC 16
Z9 16
U1 3
U2 90
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1932-7447
J9 J PHYS CHEM C
JI J. Phys. Chem. C
PD APR 18
PY 2013
VL 117
IS 15
BP 7577
EP 7588
DI 10.1021/jp3119378
PG 12
WC Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science,
   Multidisciplinary
SC Chemistry; Science & Technology - Other Topics; Materials Science
GA 130WH
UT WOS:000317950300019
ER

PT J
AU Noy, A
AF Noy, Aleksandr
TI Kinetic Model of Gas Transport in Carbon Nanotube Channels
SO JOURNAL OF PHYSICAL CHEMISTRY C
LA English
DT Article
ID DIFFUSION; FLOW; MEMBRANES
AB Carbon nanotubes represent a rare experimental realization of a nanofluidic channel, which has molecularly smooth walls and nanometer scale inner diameter. This unique combination of properties gives the carbon nanotube channel an ability to support enhanced transport of water and gases with flows often exceeding those of conventional channels by several orders of magnitude. Surprisingly, most of these transport enhancement phenomena can be explained using very simple mechanisms that hardly go beyond classical physics concepts. Here we present a simplified analytical model that uses classic kinetic theory formalism to describe gas transport in carbon nanotube channels and to highlight the role of surface defects and adsorbates in determining transport efficiency. We also extend this description to include the possibility of gas molecule diffusion along the nanotube walls. Our results show that in all cases the conditions at the nanotube channel walls play a critical role in determining the transport efficiency and that in some cases obtaining efficient transport has to involve optimization of flows from diffusion through the gas phase and along the nanotube surface.
C1 [Noy, Aleksandr] Lawrence Livermore Natl Lab, Biol & Biotechnol Div, Phys & Life Sci Directorate, Livermore, CA 94550 USA.
   [Noy, Aleksandr] Univ Calif Merced, Sch Nat Sci, Merced, CA 95344 USA.
RP Noy, A (reprint author), Lawrence Livermore Natl Lab, Biol & Biotechnol Div, Phys & Life Sci Directorate, Livermore, CA 94550 USA.
EM noy1@llnl.gov
FU NSF [NIRT-CBET-0709090]; U.S. Department of Energy, Office of Basic
   Energy Sciences, Division of Materials Sciences and Engineering; U.S.
   Department of Energy by Lawrence Livermore National Laboratory
   [DE-AC52-07NA27344]
FX I thank Dr. H.-G. Park and Dr. O. Bakajin for discussions, Dr. H.-G.
   Park for help with deriving some of the equations, and anonymous
   reviewer for helpful suggestions. Parts of this work were supported by
   NSF NIRT-CBET-0709090 and U.S. Department of Energy, Office of Basic
   Energy Sciences, Division of Materials Sciences and Engineering. Parts
   of the work were performed under the auspices of the U.S. Department of
   Energy by Lawrence Livermore National Laboratory under Contract
   DE-AC52-07NA27344.
NR 14
TC 1
Z9 1
U1 4
U2 32
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1932-7447
J9 J PHYS CHEM C
JI J. Phys. Chem. C
PD APR 18
PY 2013
VL 117
IS 15
BP 7656
EP 7660
DI 10.1021/jp4005407
PG 5
WC Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science,
   Multidisciplinary
SC Chemistry; Science & Technology - Other Topics; Materials Science
GA 130WH
UT WOS:000317950300029
ER

PT J
AU Park, YI
   Zhang, BQ
   Kuo, CY
   Martinez, JS
   Park, J
   Mallapragada, S
   Wang, HL
AF Park, Young Il
   Zhang, Bingqi
   Kuo, Cheng-Yu
   Martinez, Jennifer S.
   Park, Jongwook
   Mallapragada, Surya
   Wang, Hsing-Lin
TI Stimuli-Responsive Poly-N-isopropylacrylarnide: Phenylene Vinylene
   Oligomer Conjugate
SO JOURNAL OF PHYSICAL CHEMISTRY C
LA English
DT Article
ID TEMPERATURE; COPOLYMER; FLUORESCENCE; HYDROGELS; MICELLES; RELEASE;
   HYBRID; ACID; PH
AB Phenylene vinylene trimer (OPV) and PNIPAM conjugate with stimuli-responsive optical properties has been synthesized through a the formation of amide linkage between PNIPAM and carboxylic-acid-terminated OPV. This material exhibits thermoresponsive optical properties as temperature exceeds the lower critical solution temperature (LCST), which is 32 degrees C for PNIPAM and the conjugate. This PNIPAM-trimer conjugate is fully characterized by using NMR, FT-IR, temperature-dependent UV-vis, and fluorescence spectroscopy. We have found that the polymer conjugate solution turns opaque as temperature exceeds lower critical solution temperature and a five-fold increase in fluorescence intensity as temperature increases from 20 to 70 degrees C. Such distinct increase in fluorescence intensity is likely due to the rigidchromism, that is, the change in optical properties due to confinement of the chromophores resulting from restriction of polymer conformational structures. The PNIPAM-trimer conjugate also shows a decrease in decay lifetime with increasing temperature, whereas OPV trimer alone shows no change in decay lifetime as a function of temperature. These unique optical properties are not observed in the trimer and PNIPAM mixture, suggesting that the stimuli-responsive optical properties can occur only in PNIPAM-trimer conjugate linked through covalent bond.
C1 [Park, Young Il; Zhang, Bingqi; Kuo, Cheng-Yu; Wang, Hsing-Lin] Los Alamos Natl Lab, Div Chem, Los Alamos, NM 87545 USA.
   [Martinez, Jennifer S.] Los Alamos Natl Lab, Mat Phys & Applicat Div, Los Alamos, NM 87545 USA.
   [Park, Jongwook] Catholic Univ Korea Bucheon, Display Res Ctr, Dept Chem, Kyunggido 420743, South Korea.
   [Zhang, Bingqi; Mallapragada, Surya] Iowa State Univ, Dept Chem & Biol Engn, Ames, IA 50014 USA.
RP Park, YI (reprint author), Los Alamos Natl Lab, Div Chem, POB 1663, Los Alamos, NM 87545 USA.
FU Basic Energy Science (BES), Materials Sciences and Engineering Division,
   Biomolecular Materials program, U.S. Department of Energy; Los Alamos
   National Laboratory (LANL) Directed Research and Development Funds;
   National Nuclear Security Administration of the U.S. Department of
   Energy [DE-AC52-06NA25396]; Center for Integrated Nanotechnologies
   (CINT), a DOE Nanoscience User Facility; Center for Nonlinear Studies
   (CNLS)
FX We acknowledge support of the Basic Energy Science (BES), Materials
   Sciences and Engineering Division, Biomolecular Materials program, U.S.
   Department of Energy and Los Alamos National Laboratory (LANL) Directed
   Research and Development Funds. Los Alamos National Laboratory is
   operated by Los Alamos National Security, LLC, for the National Nuclear
   Security Administration of the U.S. Department of Energy under contract
   DE-AC52-06NA25396. We acknowledge support of the Center for Integrated
   Nanotechnologies (CINT), a DOE Nanoscience User Facility, and the Center
   for Nonlinear Studies (CNLS).
NR 25
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Z9 2
U1 2
U2 36
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1932-7447
J9 J PHYS CHEM C
JI J. Phys. Chem. C
PD APR 18
PY 2013
VL 117
IS 15
BP 7757
EP 7763
DI 10.1021/jp312157q
PG 7
WC Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science,
   Multidisciplinary
SC Chemistry; Science & Technology - Other Topics; Materials Science
GA 130WH
UT WOS:000317950300041
ER

PT J
AU Goldman, N
   Srinivasan, SG
   Hamel, S
   Fried, LE
   Gaus, M
   Elstner, M
AF Goldman, Nir
   Srinivasan, Sriram Goverapet
   Hamel, Sebastien
   Fried, Laurence E.
   Gaus, Michael
   Elstner, Marcus
TI Determination of a Density Functional Tight Binding Model with an
   Extended Basis Set and Three-Body Repulsion for Carbon Under Extreme
   Pressures and Temperatures
SO JOURNAL OF PHYSICAL CHEMISTRY C
LA English
DT Article
ID MOLECULAR-DYNAMICS SIMULATION; AUGMENTED-WAVE METHOD;
   ELECTRONIC-PROPERTIES; SHOCK COMPRESSION; DIAMOND; PHASE; NITROMETHANE;
   TRANSITION; STABILITY; SYSTEMS
AB We report here on development of a density functional tight binding (DFTB) simulation approach for carbon under extreme pressures and temperatures that includes an expanded basis set and an environmentally dependent repulsive energy. We find that including d-orbital interactions in the DFTB Hamiltonian improves determination of the electronic states at high pressure temperature conditions, compared to standard DFTB implementations that utilize s- and p-orbitals only for carbon. We then determine a three-body repulsive energy through fitting to diamond, BC8, and simple cubic cold compression curve data, as well pressures from metallic liquid configurations from density functional theory (DFT) simulations Our new model (DFTB-p3b) yields approximately 2 orders of magnitude increase in computational efficiency over standard DFT while retaining its accuracy for condensed phases of carbon under a wide range of conditions, including the metallic liquid phase at conditions up to 2000 GPa and 30 000 K. Our results provide a straightforward method by which DFTB can be extended to studies of covalently bonded materials under extremely high pressures and temperatures such as the interiors of planets and other large celestial bodies.
C1 [Goldman, Nir; Hamel, Sebastien; Fried, Laurence E.] Lawrence Livermore Natl Lab, Phys & Life Sci Directorate, Livermore, CA 94550 USA.
   [Srinivasan, Sriram Goverapet] Penn State Univ, Dept Mech & Nucl Engn, State Coll, PA USA.
   [Gaus, Michael] Univ Wisconsin, Dept Chem, Madison, WI 53706 USA.
   [Gaus, Michael] Univ Wisconsin, Inst Theoret Chem, Madison, WI 53706 USA.
   [Elstner, Marcus] Karlsruhe Inst Technol, Inst Phys Chem, D-76131 Karlsruhe, Germany.
RP Goldman, N (reprint author), Lawrence Livermore Natl Lab, Phys & Life Sci Directorate, Livermore, CA 94550 USA.
EM goldman14@llnl.gov
RI Elstner, Marcus/H-3463-2013; Fried, Laurence/L-8714-2014; Goverapet
   Srinivasan, Sriram/L-9681-2016
OI Fried, Laurence/0000-0002-9437-7700; Goverapet Srinivasan,
   Sriram/0000-0003-3984-1547
FU U.S. Department of Energy by Lawrence Livermore National Laboratory
   [DE-AC52-07NA27344]; Laboratory Directed Research and Development
   [12-ERD-052]
FX This work was performed under the auspices of the U.S. Department of
   Energy by Lawrence Livermore National Laboratory under Contract
   DE-AC52-07NA27344, and was funded by Laboratory Directed Research and
   Development Grant 12-ERD-052. Computations were performed at LLNL, using
   the Aztec, RZCereal, RZZeus, and Sierra massively parallel computers.
NR 76
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Z9 11
U1 4
U2 33
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1932-7447
J9 J PHYS CHEM C
JI J. Phys. Chem. C
PD APR 18
PY 2013
VL 117
IS 15
BP 7885
EP 7894
DI 10.1021/jp312759j
PG 10
WC Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science,
   Multidisciplinary
SC Chemistry; Science & Technology - Other Topics; Materials Science
GA 130WH
UT WOS:000317950300056
ER

PT J
AU Cai, XC
   Martin, JE
   Shea-Rohwer, LE
   Gong, K
   Kelley, DF
AF Cai, Xichen
   Martin, James E.
   Shea-Rohwer, Lauren E.
   Gong, Ke
   Kelley, David F.
TI Thermal Quenching Mechanisms in II-VI Semiconductor Nanocrystals
SO JOURNAL OF PHYSICAL CHEMISTRY C
LA English
DT Article
ID COLLOIDAL QUANTUM DOTS; BAND-EDGE EXCITON; AUGER RECOMBINATION; SHELL
   NANOCRYSTALS; CDSE NANOCRYSTALS; DYNAMICS; HETERONANOCRYSTALS;
   LUMINESCENCE; DIFFUSION; BLINKING
AB The mechanisms of temperature-dependent nonradiative processes, often referred to as thermal quenching, are studied in CdSe, CdSe/ZnSe, and CdTe nanoparticles. These particles exhibit reversible thermal quenching, the extent of which is strongly dependent on the composition of the surface and nature of the surface ligands. Thermal quenching has dynamic (affecting the luminescence lifetimes) and static (affecting the fraction of particles that are bright versus dark) components. The temperature dependence of quantum yields and time-resolved luminescence decays as well as room temperature transient absorption spectroscopy are used to elucidate the thermal quenching mechanisms. Dynamic thermal quenching is due to thermally activated trapping dynamics that occur on the same time scale as the radiative lifetime. This paper focuses on static thermal quenching and several different mechanisms are considered. It is concluded that the dominant mechanism involves thermal promotion of valence band electrons to empty chalcogenide P orbitals on the particle surfaces. This leaves a hole in the valence band, and subsequent photoexcitation produces a positive trion. The trion undergoes relatively rapid nonradiative Auger relaxation, rendering the particle dark. The differences in the extents of thermal quenching between different surface compositions, different types of particles, and different surface ligands can be understood in terms of the density of empty surface chalcogenide orbitals and the valence band energies.
C1 [Cai, Xichen; Gong, Ke; Kelley, David F.] Univ Calif Merced, Merced, CA 95343 USA.
   [Martin, James E.; Shea-Rohwer, Lauren E.] Sandia Natl Labs, Albuquerque, NM 87185 USA.
RP Kelley, DF (reprint author), Univ Calif Merced, 5200 North Lake Rd, Merced, CA 95343 USA.
EM dfkelley@ucmerced.edu
FU Sandia National Laboratories Solid-State-Lighting Science Energy
   Frontiers Research Center; U.S. Department of Energy, Office of Basic
   Energy Sciences; U.S. Department of Energy's National Nuclear Security
   Administration [DE-AC04-94AL85000]
FX This work was supported through the Sandia National Laboratories
   Solid-State-Lighting Science Energy Frontiers Research Center, funded by
   the U.S. Department of Energy, Office of Basic Energy Sciences. Sandia
   National Laboratories is a multiprogram laboratory managed and operated
   by Sandia Corporation, a wholly owned subsidiary of Lockheed Martin
   Corporation, for the U.S. Department of Energy's National Nuclear
   Security Administration under Contract DE-AC04-94AL85000.
NR 50
TC 16
Z9 16
U1 2
U2 75
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1932-7447
J9 J PHYS CHEM C
JI J. Phys. Chem. C
PD APR 18
PY 2013
VL 117
IS 15
BP 7902
EP 7913
DI 10.1021/jp400688g
PG 12
WC Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science,
   Multidisciplinary
SC Chemistry; Science & Technology - Other Topics; Materials Science
GA 130WH
UT WOS:000317950300058
ER

PT J
AU Kauffman, DR
   Alfonso, D
   Matranga, C
   Qian, HF
   Jin, RC
AF Kauffman, Douglas R.
   Alfonso, Dominic
   Matranga, Christopher
   Qian, Huifeng
   Jin, Rongchao
TI A Quantum Alloy: The Ligand-Protected Au25-xAgx(SR)(18) Cluster
SO JOURNAL OF PHYSICAL CHEMISTRY C
LA English
DT Article
ID OPTICAL-ABSORPTION SPECTRA; ELECTRONIC-STRUCTURE; GOLD NANOCLUSTERS;
   AU-25 CLUSTERS; SURFACE CHARACTERIZATION; THERMAL-DECOMPOSITION; CHARGE
   REDISTRIBUTION; RELAXATION DYNAMICS; MASS-SPECTROMETRY;
   CRYSTAL-STRUCTURE
AB Recent synthetic advances have produced very small (sub-2 nm), ligand-protected mixed-metal clusters. Realization of such clusters allows the investigation of fundamental questions: (1) Will heteroatoms occupy specific sites within the cluster? (2) How will the inclusion of heteroatoms affect the electronic structure and chemical properties of the cluster? (3) How will these very small mixed-metal systems differ from larger, more traditional alloy materials? In this report we provide experimental and computational characterization of the ligand-protected mixed-metal Au25-xAgx(SC2H4Ph)(18) cluster (abbreviated as Au25-xAgx, where x = 0-5 Ag atoms) compared with the unsubstituted Au-25(SC2H4Ph)(18) cluster (abbreviated as Au-25). Density functional theory analysis has predicted that Ag heteroatoms will preferentially occupy sites on the surface of the cluster core. X-ray photoelectron spectroscopy revealed Au Ag state mixing and charge redistribution within the Au25-xAgx cluster. Optical spectroscopy and nonaqueous electrochemistry indicate that Ag heteroatoms increased the duster lowest unoccupied molecular orbital (LUMO) energy, introduced new features in the Au25-xAgx absorbance spectrum, and rendered some optical transitions forbidden. In situ spectroelectrochemical experiments revealed charge-dependent Au25-xAgx optical properties and oxidative photoluminescence quenching. Finally, O-2 adsorption studies have shown Au25-xAgx clusters can participate in photomediated charge-transfer events. These results illustrate that traditional alloy concepts like metal-centered state mixing and internal charge redistribution also occur in very small mixed-metal clusters. However, resolution of specific heteroatom locations and their impact on the cluster's quantized electronic structure will require a combination of computational modeling, optical spectroscopy, and nonaqueous electrochemistry.
C1 [Kauffman, Douglas R.] US DOE, Natl Energy Technol Lab, Pittsburgh, PA 15236 USA.
   [Kauffman, Douglas R.] URS, South Pk, PA 15129 USA.
   [Qian, Huifeng; Jin, Rongchao] Carnegie Mellon Univ, Dept Chem, Pittsburgh, PA 15213 USA.
RP Kauffman, DR (reprint author), US DOE, Natl Energy Technol Lab, Pittsburgh, PA 15236 USA.
EM Douglas.Kauffman@contr.netl.doe.gov
RI Qian, Huifeng /C-1486-2011; Matranga, Christopher/E-4741-2015; 
OI Matranga, Christopher/0000-0001-7082-5938; Kauffman,
   Douglas/0000-0002-7855-3428
FU Air Force Office of Scientific Research under AFOSR Award
   [FA9550-11-1-9999, FA9550-11-1-0147]; Camille Dreyfus Teacher-Scholar
   Awards Program; National Energy Technology Laboratory's Regional
   University Alliance (NETL-RUA); NETL; RES [DE-FE0004000]; agency of the
   United States Government
FX We thank Dr. J. Baltrus (NETL) for access to XPS instrumentation. R.J.
   acknowledgments financial support by the Air Force Office of Scientific
   Research under AFOSR Award FA9550-11-1-9999 (FA9550-11-1-0147) and the
   Camille Dreyfus Teacher-Scholar Awards Program. As part of the National
   Energy Technology Laboratory's Regional University Alliance (NETL-RUA),
   a collaborative initiative of the NETL, this technical effort was
   performed under RES Contract DE-FE0004000. This report was prepared as
   an account of work sponsored by an agency of the United States
   Government. Neither the United States Government nor any agency thereof,
   nor any of their employees, makes any warranty, express or implied, or
   assumes any legal liability or responsibility for the accuracy,
   completeness, or usefulness of any information, apparatus, product, or
   process disclosed, or represents that its use would not infringe
   privately owned rights. Reference herein to any specific commercial
   product, process, or service by trade name, trademark, manufacturer, or
   otherwise does not necessarily constitute or imply its endorsement,
   recommendation, or favoring by the United States Government or any
   agency thereof. The views and opinions of authors expressed herein do
   not necessarily state or reflect those of the United States Government
   or any agency thereof.
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PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1932-7447
J9 J PHYS CHEM C
JI J. Phys. Chem. C
PD APR 18
PY 2013
VL 117
IS 15
BP 7914
EP 7923
DI 10.1021/jp4013224
PG 10
WC Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science,
   Multidisciplinary
SC Chemistry; Science & Technology - Other Topics; Materials Science
GA 130WH
UT WOS:000317950300059
ER

PT J
AU Hardin, WG
   Slanac, DA
   Wang, X
   Dai, S
   Johnston, KP
   Stevenson, KJ
AF Hardin, William G.
   Slanac, Daniel A.
   Wang, Xiqing
   Dai, Sheng
   Johnston, Keith P.
   Stevenson, Keith J.
TI Highly Active, Nonprecious Metal Perovskite Electrocatalysts for
   Bifunctional Metal-Air Battery Electrodes
SO JOURNAL OF PHYSICAL CHEMISTRY LETTERS
LA English
DT Article
ID OXYGEN REDUCTION REACTION; HOMOGENEOUS PRECIPITATION METHOD; REVERSE
   MICELLE SYNTHESIS; OXIDE SURFACES; FUEL-CELLS; WATER OXIDATION; ALKALINE
   MEDIA; DISK ELECTRODE; CATALYSTS; EVOLUTION
AB Perovskites are of great interest as replacements for precious metals and oxides used in bifunctional air electrodes involving the oxygen evolution reaction (OER) and oxygen reduction reaction (ORR). Herein, we report the synthesis and activity of a phase-pure nanocrystal perovskite catalyst that is highly active for the OER and ORR. The OER mass activity of LaNiO3, synthesized by the calcination of a rapidly dried nanoparticle dispersion and supported on nitrogen-doped carbon, is demonstrated to be nearly 3-fold that of 6 nm IrO2 and exhibits no hysteresis during oxygen evolution. Moreover, strong OER/ORR bifimctionality is shown by the low total overpotential (1.02 V) between the reactions, on par or better than that of noble metal catalysts such as Pt (1.16 V) and Ir (0.92 V). These results are examined in the context of surface hydroxylation, and a new OER cycle is proposed that unifies theory and the unique surface properties of LaNiO3.
C1 [Slanac, Daniel A.; Johnston, Keith P.] Univ Texas Austin, Dept Chem Engn, Austin, TX 78712 USA.
   [Stevenson, Keith J.] Univ Texas Austin, Dept Chem & Biochem, Austin, TX 78712 USA.
   [Johnston, Keith P.; Stevenson, Keith J.] Univ Texas Austin, Ctr Electrochem, Austin, TX 78712 USA.
   [Hardin, William G.; Johnston, Keith P.; Stevenson, Keith J.] Univ Texas Austin, Texas Mat Inst, Austin, TX 78712 USA.
   [Wang, Xiqing; Dai, Sheng] Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN 37831 USA.
RP Johnston, KP (reprint author), Univ Texas Austin, Dept Chem Engn, Austin, TX 78712 USA.
EM kpj@che.utexas.edu; stevenson@cm.utexas.edu
RI Wang, Xiqing/E-3062-2010; Dai, Sheng/K-8411-2015
OI Wang, Xiqing/0000-0002-1843-008X; Dai, Sheng/0000-0002-8046-3931
FU R. A. Welch Foundation [F-1529, F-1319]; NSF [CHE-0618242]
FX Financial support for this work was provided by the R. A. Welch
   Foundation (Grants F-1529 and F-1319). The Kratos XPS was funded by the
   NSF under Grant CHE-0618242. We would also like to thank Karen Ann Li
   for helpful discussions.
NR 50
TC 96
Z9 96
U1 23
U2 284
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1948-7185
J9 J PHYS CHEM LETT
JI J. Phys. Chem. Lett.
PD APR 18
PY 2013
VL 4
IS 8
BP 1254
EP 1259
DI 10.1021/jz400595z
PG 6
WC Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science,
   Multidisciplinary; Physics, Atomic, Molecular & Chemical
SC Chemistry; Science & Technology - Other Topics; Materials Science;
   Physics
GA 130WI
UT WOS:000317950400006
PM 26282138
ER

PT J
AU Jiang, DE
   Wu, JZ
AF Jiang, De-en
   Wu, Jianzhong
TI Microscopic Insights into the Electrochemical Behavior of Nonaqueous
   Electrolytes in Electric Double-Layer Capacitors
SO JOURNAL OF PHYSICAL CHEMISTRY LETTERS
LA English
DT Article
ID DENSITY-FUNCTIONAL THEORY; NANOPOROUS CARBON SUPERCAPACITORS; IONIC
   LIQUID; DIMER MODEL; PORE-SIZE; DIFFERENTIAL CAPACITANCE; SUBNANOMETER
   PORES; SIMULATION; INTERFACES; ADSORPTION
AB Electric double-layer capacitors (EDLCs) are electrical devices that store energy by adsorption of ionic species at the inner surface of porous electrodes. Compared with aqueous electrolytes, ionic liquid and organic electrolytes have the advantage of larger potential windows, making them attractive for the next generation of EDLCs with superior energy and power densities. The performance of both ionic liquid and organic electrolyte EDLCs hinges on the judicious selection of the electrode pore size and the electrolyte composition, which requires a comprehension of the charging behavior from a microscopic view. In this Perspective, we discuss predictions from the classical density functional theory (CDFT) on the dependence of the capacitance on the pore size for ionic liquid and organic electrolyte EDLCs. CDFT is applicable to electrodes with the pore size ranging from that below the ionic dimensionality to mesoscopic scales, thus unique for investigating the electrochemical behavior of the confined electrolytes for EDLC applications.
C1 [Jiang, De-en] Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN 37831 USA.
   [Wu, Jianzhong] Univ Calif Riverside, Dept Chem & Environm Engn, Riverside, CA 92521 USA.
RP Jiang, DE (reprint author), Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN 37831 USA.
EM jiangd@ornl.gov; jwu@engr.ucr.edu
RI Jiang, De-en/D-9529-2011; Wu, Jianzhong/I-5164-2013; 
OI Jiang, De-en/0000-0001-5167-0731; Wu, Jianzhong/0000-0002-4582-5941
FU Fluid Interface Reactions, Structures, and Transport (FIRST) Center, an
   Energy Frontier Research Center; U.S. Department of Energy (DOE), Office
   of Science, Office of Basic Energy Sciences; DOE [DE-FG02-06ER46296]
FX Calculations, data analysis, and writing (D.-e.J. and J.W.) were
   supported by the Fluid Interface Reactions, Structures, and Transport
   (FIRST) Center, an Energy Frontier Research Center funded by the U.S.
   Department of Energy (DOE), Office of Science, Office of Basic Energy
   Sciences. Method development (J.W.) was supported by the DOE Grant
   (DE-FG02-06ER46296).
NR 49
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U1 3
U2 89
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1948-7185
J9 J PHYS CHEM LETT
JI J. Phys. Chem. Lett.
PD APR 18
PY 2013
VL 4
IS 8
BP 1260
EP 1267
DI 10.1021/jz4002967
PG 8
WC Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science,
   Multidisciplinary; Physics, Atomic, Molecular & Chemical
SC Chemistry; Science & Technology - Other Topics; Materials Science;
   Physics
GA 130WI
UT WOS:000317950400007
PM 26282139
ER

PT J
AU Harris, MA
   Luehr, CA
   Faries, KM
   Wander, M
   Kressel, L
   Holten, D
   Hanson, DK
   Laible, PD
   Kirmaier, C
AF Harris, Michelle A.
   Luehr, Craig A.
   Faries, Kaitlyn M.
   Wander, Marc
   Kressel, Lucas
   Holten, Dewey
   Hanson, Deborah K.
   Laible, Philip D.
   Kirmaier, Christine
TI Protein Influence on Charge-Asymmetry of the Primary Donor in
   Photosynthetic Bacterial Reaction Centers Containing a Heterodimer:
   Effects on Photophysical Properties and Electron Transfer
SO JOURNAL OF PHYSICAL CHEMISTRY B
LA English
DT Article
ID RHODOBACTER-SPHAEROIDES R-26; VIRIDIS REACTION CENTERS; MUTANT REACTION
   CENTERS; CAPSULATUS REACTION CENTERS; RESONANCE STARK SPECTROSCOPY;
   M-SIDE BACTERIOPHEOPHYTIN; RHODOPSEUDOMONAS-VIRIDIS; WILD-TYPE;
   EXCITED-STATES; SUPEREXCHANGE MECHANISM
AB The substantial electronic distinctions between bacteriochlorophyll (BChl) and its Mg-free analogue bacteriopheophytin (BPh) are exploited in two sets of Rhodobacter capsulatus reaction center (RC) mutants that contain a heterodimeric BChl-BPh primary electron donor (D). The BPh component of the M-heterodimer (Mhd) or L-heterodimer (Lhd) obtains from substituting a Leu for His M200 or for His L173, respectively. Lhd-beta and Mhd-beta RCs serve as the initial templates in the two mutant sets, where beta denotes that the L-side BPh acceptor (H-L) has been replaced by a BChl (due to substituting His for Leu M212). Three variants each of Lhd-beta and Mhd-beta mutants were constructed: (1) a swap (denoted YF) of the native Phe (L181) and Tyr (M208) residues, which flank D and the nearby M- and L-side monomeric BChl cofactors, respectively, giving Tyr (L181) and Phe (M208); (2) addition of a hydrogen bond (denoted L131LH) to the ring V keto group of the L-macrocycle of D, via replacing the native Leu at L131 with His; (3) the combination of 1 and 2. A low yield of electron transfer (ET) to the M-side BPh (H-M) is observed in all four Lhd-containing RCs. Comparison with the yield of ET to beta on the L-side shows that electron density on the L-macrocycle of D* favors ET to the M-side cofactors and vice versa. Increasing or decreasing the electronic asymmetry of D* via the YF, L131LH mutations or the combination results in consistent trends in the characteristics of the long wavelength ground state absorption band of D, the rate constant of internal conversion of D* to the ground state, and the rate constants for ET to both the L- and M-side cofactors. A surprising correlation is that an increase in the charge asymmetry in D* not only increases the D* internal-conversion rate constant, but also the rate constants for ET to both the L- and M-side cofactors, spanning time scales of tens of picoseconds to several nanoseconds. The YF swap has a previously unrecognized effect on the electronic asymmetry of D*, resulting in increased charge asymmetry for the Mhd and decreased charge asymmetry for the Lhd. This result indicates that the native Tyr (M208) and Phe (L181) in the wild-type RC promote an electron distribution in P* that is the reverse of that favorable for ET to the photoactive L-branch. This conclusion reinforces the view that the native configuration of these residues promotes ET to the L branch primarily by poising the free energies of the charge-separated states. Overall, this work addresses the extent to which electronic couplings complement energetics in underpinning the directionality of ET in the bacterial RC.
C1 [Harris, Michelle A.; Faries, Kaitlyn M.; Holten, Dewey; Kirmaier, Christine] Washington Univ, Dept Chem, St Louis, MO 63130 USA.
   [Luehr, Craig A.; Wander, Marc; Kressel, Lucas; Hanson, Deborah K.; Laible, Philip D.] Argonne Natl Lab, Biosci Div, Argonne, IL 60439 USA.
RP Kirmaier, C (reprint author), Washington Univ, Dept Chem, St Louis, MO 63130 USA.
EM kirmaier@wustl.edu
FU National Science Foundation [MCB-0948996]; United States Department of
   Energy [DE-AC02-06CH11357]
FX C.K. and D.H. thank the National Science Foundation for supporting this
   work under Grant MCB-0948996. P.D.L., and C.L. acknowledge support by
   the United States Department of Energy under Contract No.
   DE-AC02-06CH11357 to the University of Chicago, LLC. C.L. was a
   participant in the Guest Faculty Research Program at Argonne National
   Laboratory and would like to thank Trinity Christian College for
   providing a one-semester sabbatical that allowed for his participation
   in this work.
NR 106
TC 4
Z9 4
U1 0
U2 24
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1520-6106
J9 J PHYS CHEM B
JI J. Phys. Chem. B
PD APR 18
PY 2013
VL 117
IS 15
BP 4028
EP 4041
DI 10.1021/jp401138h
PG 14
WC Chemistry, Physical
SC Chemistry
GA 130WE
UT WOS:000317950000010
PM 23560569
ER

PT J
AU Deslippe, J
   Samsonidze, G
   Jain, M
   Cohen, ML
   Louie, SG
AF Deslippe, Jack
   Samsonidze, Georgy
   Jain, Manish
   Cohen, Marvin L.
   Louie, Steven G.
TI Coulomb-hole summations and energies for GW calculations with limited
   number of empty orbitals: A modified static remainder approach
SO PHYSICAL REVIEW B
LA English
DT Article
ID WALLED CARBON NANOTUBES; QUASI-PARTICLE ENERGIES; SPECTRA
AB Ab initio GW calculations are a standard method for computing the spectroscopic properties of many materials. The most computationally expensive part in conventional implementations of the method is the generation and summation over the large number of empty orbitals required to converge the electron self-energy. We propose a scheme to reduce the summation over empty states by the use of a modified static remainder approximation, which is simple to implement and yields accurate self-energies for both bulk and molecular systems requiring a small fraction of the typical number of empty orbitals. DOI: 10.1103/PhysRevB.87.165124
C1 [Deslippe, Jack; Samsonidze, Georgy; Jain, Manish; Cohen, Marvin L.; Louie, Steven G.] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
   [Deslippe, Jack; Samsonidze, Georgy; Jain, Manish; Cohen, Marvin L.; Louie, Steven G.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94720 USA.
   [Deslippe, Jack] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, NERSC, Berkeley, CA 94720 USA.
   [Jain, Manish] Indian Inst Sci, Dept Phys, Bangalore 560012, Karnataka, India.
RP Deslippe, J (reprint author), Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
RI Jain, Manish/A-8303-2010; Samsonidze, Georgy/G-3613-2016
OI Jain, Manish/0000-0001-9329-6434; Samsonidze, Georgy/0000-0002-3759-1794
FU U.S. Department of Energy, Office of Science, Advanced Scientific
   Computing Research and Basic Energy Sciences [DE-FG02-12ER46878,
   DE-AC02-05CH11231]; Office of Science, Office of Basic Energy Sciences,
   Materials Sciences and Engineering Division, U.S. Department of Energy
   [DE-AC02-05CH11231]; ASCR Office in the DOE, Office of Science
   [DE-AC02-05CH11231]; Office of Science of the U.S. Department of Energy
   [DE-AC02-05CH11231]
FX Support for this work is provided through Scientific Discovery through
   Advanced Computing (SciDAC) program funded by U.S. Department of Energy,
   Office of Science, Advanced Scientific Computing Research and Basic
   Energy Sciences, Grant No. DE-FG02-12ER46878 and under Contract No.
   DE-AC02-05CH11231. Support is also acknowledged from the Director,
   Office of Science, Office of Basic Energy Sciences, Materials Sciences
   and Engineering Division, U.S. Department of Energy, under Contract No.
   DE-AC02-05CH11231 and ASCR Office in the DOE, Office of Science, under
   Contract No. DE-AC02-05CH11231. This research used resources of the
   National Energy Research Scientific Computing Center, which is supported
   by the Office of Science of the U.S. Department of Energy under Contract
   No. DE-AC02-05CH11231.
NR 25
TC 41
Z9 41
U1 0
U2 15
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
EI 1550-235X
J9 PHYS REV B
JI Phys. Rev. B
PD APR 18
PY 2013
VL 87
IS 16
AR 165124
DI 10.1103/PhysRevB.87.165124
PG 6
WC Physics, Condensed Matter
SC Physics
GA 129FP
UT WOS:000317824700003
ER

PT J
AU Zaki, N
   Marianetti, CA
   Acharya, DP
   Zahl, P
   Sutter, P
   Okamoto, J
   Johnson, PD
   Millis, AJ
   Osgood, RM
AF Zaki, Nader
   Marianetti, Chris A.
   Acharya, Danda P.
   Zahl, Percy
   Sutter, Peter
   Okamoto, Junichi
   Johnson, Peter D.
   Millis, Andrew J.
   Osgood, Richard M.
TI Experimental observation of spin-exchange-induced dimerization of an
   atomic one-dimensional system
SO PHYSICAL REVIEW B
LA English
DT Article
ID CHAINS
AB Using low-temperature scanning tunneling microscopy, we demonstrate a one-dimensional system that undergoes a charge-density-wave (CDW) instability on a metallic substrate. For our measurements we utilize a self-assembled monatomic chain of Co atoms aligned by the steps on a vicinal Cu(111) surface. We assign the measured CDW instability to ferromagnetic interactions along the chain. We show that though the linear arrayed dimers are not electronically isolated, they are magnetically independent, and hence can potentially serve as a binary spin-memory system. DOI: 10.1103/PhysRevB.87.161406
C1 [Zaki, Nader; Marianetti, Chris A.; Okamoto, Junichi; Millis, Andrew J.; Osgood, Richard M.] Columbia Univ, New York, NY 10027 USA.
   [Acharya, Danda P.; Zahl, Percy; Sutter, Peter] Brookhaven Natl Lab, Ctr Funct Nanomat, Upton, NY 11973 USA.
   [Johnson, Peter D.] Brookhaven Natl Lab, Upton, NY 11973 USA.
RP Zaki, N (reprint author), Columbia Univ, New York, NY 10027 USA.
EM nz2137@columbia.edu; osgood@columbia.edu
RI Okamoto, Jun-ichi/B-9409-2017
OI Okamoto, Jun-ichi/0000-0002-2537-3343
FU Department of Energy, Office of Basic Energy Sciences, Division of
   Materials Sciences and Engineering [DE-FG 02-04-ER-46157]; Department of
   Energy [DE-AC02- 98CH10886]
FX This work was supported by the Department of Energy, Office of Basic
   Energy Sciences, Division of Materials Sciences and Engineering under
   Award Contract No. DE-FG 02-04-ER-46157. Work at Brookhaven National
   Laboratory was supported by the Department of Energy under Contract No.
   DE-AC02- 98CH10886. We thank Mark Hybertsen for discussions and
   suggestions regarding the DFT calculations. We thank James Davenport and
   Abhay Pasupathy for helpful discussions.
NR 26
TC 8
Z9 8
U1 3
U2 25
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD APR 18
PY 2013
VL 87
IS 16
AR 161406
DI 10.1103/PhysRevB.87.161406
PG 5
WC Physics, Condensed Matter
SC Physics
GA 129FP
UT WOS:000317824700002
ER

PT J
AU Sengupta, S
   Samudrala, N
   Singh, V
   Thamizhavel, A
   Littlewood, PB
   Tripathi, V
   Deshmukh, MM
AF Sengupta, Shamashis
   Samudrala, Niveditha
   Singh, Vibhor
   Thamizhavel, Arumugam
   Littlewood, Peter B.
   Tripathi, Vikram
   Deshmukh, Mandar M.
TI Plasmon Mode Modifies the Elastic Response of a Nanoscale Charge Density
   Wave System
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID ELECTRIC-FIELD; ELECTROMECHANICAL OSCILLATOR; CONDUCTOR NBSE3; REGIME;
   NOISE
AB The elastic response of suspended NbSe3 nanowires is studied across the charge density wave phase transition. The nanoscale dimensions of the resonator lead to a large resonant frequency (similar to 10-100 MHz), bringing the excited phonon frequency in close proximity of the plasmon mode of the electronic condensate-a parameter window not accessible in bulk systems. The interaction between the phonon and plasmon modes strongly modifies the elastic properties at high frequencies. This is manifested in the nanomechanics of the system as a sharp peak in the temperature dependence of the elastic modulus (relative change of 12.8%) in the charge density wave phase. DOI: 10.1103/PhysRevLett.110.166403
C1 [Sengupta, Shamashis; Samudrala, Niveditha; Singh, Vibhor; Thamizhavel, Arumugam; Deshmukh, Mandar M.] Tata Inst Fundamental Res, Dept Condensed Matter Phys & Mat Sci, Bombay 400005, Maharashtra, India.
   [Littlewood, Peter B.] Argonne Natl Lab, Phys Sci & Engn Div, Argonne, IL 60439 USA.
   [Tripathi, Vikram] Tata Inst Fundamental Res, Dept Theoret Phys, Bombay 400005, Maharashtra, India.
RP Sengupta, S (reprint author), Tata Inst Fundamental Res, Dept Condensed Matter Phys & Mat Sci, Homi Bhabha Rd, Bombay 400005, Maharashtra, India.
EM shamashis@gmail.com; vtripathi@theory.tifr.res.in; deshmukh@tifr.res.in
RI Littlewood, Peter/B-7746-2008; Thamizhavel, Arumugam/A-1801-2011; 
OI Thamizhavel, Arumugam/0000-0003-1679-4370; Samudrala,
   Niveditha/0000-0001-6597-3696
FU Government of India; AOARD [124045]; U.S. Department of Energy [FWP
   70069]
FX We thank S. Bhattacharya, P. Monceau, H. S. J. van der Zant, and U.
   Waghmare for discussions. The work done at TIFR was supported by the
   Government of India and AOARD (Grant No. 124045). The work done at
   Argonne National Laboratory was supported by the U.S. Department of
   Energy under Grant No. FWP 70069.
NR 29
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Z9 2
U1 2
U2 21
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD APR 18
PY 2013
VL 110
IS 16
AR 166403
DI 10.1103/PhysRevLett.110.166403
PG 5
WC Physics, Multidisciplinary
SC Physics
GA 129CA
UT WOS:000317814800015
PM 23679627
ER

PT J
AU Chen, X
   Parker, D
   Du, MH
   Singh, DJ
AF Chen, Xin
   Parker, David
   Du, Mao-Hua
   Singh, David J.
TI Potential thermoelectric performance of hole-doped Cu2O
SO NEW JOURNAL OF PHYSICS
LA English
DT Article
ID ELECTRONIC-STRUCTURE; ZNO CERAMICS; TRANSPORT; CUO; CRYSTALS;
   CONVERSION; GRADIENT; MOBILITY; CARRIERS; DENSITY
AB High thermoelectric performance in oxides requires stable conductive materials that have suitable band structures. Here we show, based on an analysis of the thermopower and related properties using first-principles calculations and Boltzmann transport theory in the relaxation time approximation, that hole-doped Cu2O may be such a material. We find that hole-doped Cu2O has a high thermopower of above 200 mu V K-1 even with doping levels as high as 5.2 x 10(20) cm(-3) at 500 K, mainly attributed to the heavy valence bands of Cu2O. This is reminiscent of the cobaltate family of high-performance oxide thermoelectrics and implies that hole-doped Cu2O could be an excellent thermoelectric material if suitably doped.
C1 [Chen, Xin; Parker, David; Du, Mao-Hua; Singh, David J.] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA.
RP Singh, DJ (reprint author), Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA.
EM singhdj@ornl.gov
RI Du, Mao-Hua/B-2108-2010
OI Du, Mao-Hua/0000-0001-8796-167X
FU Department of Energy, Office of Science through the S3TEC Energy
   Frontier Research Center
FX This work was supported by the Department of Energy, Office of Science
   through the S3TEC Energy Frontier Research Center.
NR 64
TC 17
Z9 18
U1 4
U2 128
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 1367-2630
J9 NEW J PHYS
JI New J. Phys.
PD APR 18
PY 2013
VL 15
AR 043029
DI 10.1088/1367-2630/15/4/043029
PG 13
WC Physics, Multidisciplinary
SC Physics
GA 127TP
UT WOS:000317722000001
ER

PT J
AU Bandi, MM
   Rivera, MK
   Krzakala, F
   Ecke, RE
AF Bandi, M. M.
   Rivera, M. K.
   Krzakala, F.
   Ecke, R. E.
TI Fragility and hysteretic creep in frictional granular jamming
SO PHYSICAL REVIEW E
LA English
DT Article
ID SPHERES; DYNAMICS; SYSTEMS; PACKING; SHEAR
AB The granular jamming transition is experimentally investigated in a two-dimensional system of frictional, bidispersed disks subject to quasistatic, uniaxial compression without vibrational disturbances (zero granular temperature). Three primary results are presented in this experimental study. First, using disks with different static friction coefficients (mu), we experimentally verify numerical results that predict jamming onset at progressively lower packing fractions with increasing friction. Second, we show that the first compression cycle measurably differs from subsequent cycles. The first cycle is fragile-a metastable configuration with simultaneous jammed and unjammed clusters-over a small packing fraction interval (phi(1) < phi < phi(2)) and exhibits simultaneous exponential rise in pressure and exponential decrease in disk displacements over the same packing fraction interval. This fragile behavior is explained through a percolation mechanism of stressed contacts where cluster growth exhibits spatial correlation with disk displacements and contributes to recent results emphasizing fragility in frictional jamming. Control experiments show that the fragile state results from the experimental incompatibility between the requirements for zero friction and zero granular temperature. Measurements with several disk materials of varying elastic moduli E and friction coefficients mu show that friction directly controls the start of the fragile state but indirectly controls the exponential pressure rise. Finally, under repetitive loading (compression) and unloading (decompression), we find the system exhibits pressure hysteresis, and the critical packing fraction phi(c) increases slowly with repetition number. This friction-induced hysteretic creep is interpreted as the granular pack's evolution from a metastable to an eventual structurally stable configuration. It is shown to depend on the quasistatic step size Delta phi, which provides the only perturbative mechanism in the experimental protocol, and the friction coefficient mu, which acts to stabilize the pack. DOI: 10.1103/PhysRevE.87.042205
C1 [Bandi, M. M.; Rivera, M. K.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
   [Bandi, M. M.; Krzakala, F.; Ecke, R. E.] Los Alamos Natl Lab, T CNLS, Los Alamos, NM 87545 USA.
   [Krzakala, F.] CNRS, F-75000 Paris, France.
   [Krzakala, F.] ESPCI ParisTech, UMR Gulliver 7083, F-75000 Paris, France.
RP Bandi, MM (reprint author), OIST Grad Univ, Collect Interact Unit, 1919-1 Tancha, Onna Son, Okinawa 9040495, Japan.
EM bandi@oist.jp
FU National Nuclear Security Administration of the US Department of Energy
   at Los Alamos National Laboratory [DE-AC52-06NA25396]
FX This work was carried out under the auspices of the National Nuclear
   Security Administration of the US Department of Energy at Los Alamos
   National Laboratory under Contract No. DE-AC52-06NA25396. The authors
   gratefully acknowledge helpful discussions with O. Dauchot.
NR 36
TC 10
Z9 12
U1 0
U2 21
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1539-3755
J9 PHYS REV E
JI Phys. Rev. E
PD APR 18
PY 2013
VL 87
IS 4
AR 042205
DI 10.1103/PhysRevE.87.042205
PG 14
WC Physics, Fluids & Plasmas; Physics, Mathematical
SC Physics
GA 129HZ
UT WOS:000317831200003
PM 23679405
ER

PT J
AU Wang, YY
   Sun, CN
   Fan, F
   Sangoro, JR
   Berman, MB
   Greenbaum, SG
   Zawodzinski, TA
   Sokolov, AP
AF Wang, Yangyang
   Sun, Che-Nan
   Fan, Fei
   Sangoro, Joshua R.
   Berman, Marc B.
   Greenbaum, Steve G.
   Zawodzinski, Thomas A.
   Sokolov, Alexei P.
TI Examination of methods to determine free-ion diffusivity and number
   density from analysis of electrode polarization
SO PHYSICAL REVIEW E
LA English
DT Article
ID COMPLEX DIELECTRIC-CONSTANT; POLY(ETHYLENE OXIDE)/LII MELTS;
   MOLECULAR-DYNAMICS SIMULATIONS; SPACE-CHARGE POLARIZATION;
   LIQUID-CRYSTAL MATERIALS; BIOLOGICAL-MATERIALS; SPECTROSCOPY; POLYMER;
   PERMITTIVITY; IMPEDANCE
AB Electrode polarization analysis is frequently used to determine free-ion diffusivity and number density in ionic conductors. In the present study, this approach is critically examined in a wide variety of electrolytes, including aqueous and nonaqueous solutions, polymer electrolytes, and ionic liquids. It is shown that the electrode polarization analysis based on the Macdonald-Trukhan model [J. Chem. Phys. 124, 144903 (2006); J. Non-Cryst. Solids 357, 3064 (2011)] progressively fails to give reasonable values of free-ion diffusivity and number density with increasing salt concentration. This should be expected because the original model of electrode polarization is designed for dilute electrolytes. An empirical correction method which yields ion diffusivities in reasonable agreement with pulsed-field gradient nuclear magnetic resonance measurements is proposed. However, the analysis of free-ion diffusivity and number density from electrode polarization should still be exercised with great caution because there is no solid theoretical justification for the proposed corrections. DOI: 10.1103/PhysRevE.87.042308
C1 [Wang, Yangyang; Sangoro, Joshua R.; Sokolov, Alexei P.] Oak Ridge Natl Lab, Chem Sci Div, Oak Ridge, TN 37831 USA.
   [Sun, Che-Nan; Zawodzinski, Thomas A.] Oak Ridge Natl Lab, Mat Sci & Technol Div, Oak Ridge, TN 37831 USA.
   [Fan, Fei; Sokolov, Alexei P.] Univ Tennessee, Dept Chem, Knoxville, TN 37996 USA.
   [Berman, Marc B.; Greenbaum, Steve G.] CUNY Hunter Coll, Dept Phys & Astron, New York, NY 10065 USA.
   [Zawodzinski, Thomas A.] Univ Tennessee, Dept Chem & Biomol Engn, Knoxville, TN 37996 USA.
RP Wang, YY (reprint author), Oak Ridge Natl Lab, Chem Sci Div, Oak Ridge, TN 37831 USA.
EM wangy@ornl.gov
RI Sun, Che-Nan/I-3871-2013; Wang, Yangyang/A-5925-2010; Sangoro,
   Joshua/A-6573-2011
OI Wang, Yangyang/0000-0001-7042-9804; Sangoro, Joshua/0000-0002-5483-9528
FU Laboratory Directed Research and Development Program of Oak Ridge
   National Laboratory; NSF [DMR-1104824]; DOE-BES Materials Science and
   Engineering Division; US DOE-BES [DE-SC0005029]
FX The authors thank A. L. Agapov and M. Nakanishi for fruitful
   discussions. This research was sponsored by the Laboratory Directed
   Research and Development Program of Oak Ridge National Laboratory,
   managed by UT-Battelle, LLC, for the US Department of Energy. F.F.
   thanks the NSF Polymer Program (DMR-1104824) for funding. J.R.S. and
   A.P.S. acknowledge the financial support from the DOE-BES Materials
   Science and Engineering Division. The NMR program at Hunter College is
   supported by a grant from the US DOE-BES under Contract No.
   DE-SC0005029.
NR 37
TC 21
Z9 21
U1 5
U2 60
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 2470-0045
EI 2470-0053
J9 PHYS REV E
JI Phys. Rev. E
PD APR 18
PY 2013
VL 87
IS 4
AR 042308
DI 10.1103/PhysRevE.87.042308
PG 9
WC Physics, Fluids & Plasmas; Physics, Mathematical
SC Physics
GA 129HZ
UT WOS:000317831200006
PM 23679415
ER

PT J
AU Jiang, C
   Srinivasan, SG
AF Jiang, Chao
   Srinivasan, Srivilliputhur G.
TI Unexpected strain-stiffening in crystalline solids
SO NATURE
LA English
DT Article
ID SUPERHARD MATERIALS; ALUMINUM; NANOINDENTATION; INSTABILITIES;
   PLASTICITY; STRENGTH; DIAMOND; SCIENCE; STRESS; CARBON
AB Strain-stiffening-an increase in material stiffness at large strains-is a vital mechanism by which many soft biological materials thwart excessive deformation to protect tissue integrity(1-3). Understanding the fundamental science of strain-stiffening and incorporating this concept into the design of metals and ceramics for advanced applications is an attractive prospect. Using cementite (Fe3C) and aluminium borocarbide (Al3BC3) as prototypes, here we show via quantum-mechanical calculations that strain-stiffening also occurs, surprisingly, in simple inorganic crystalline solids and confers exceptionally high strengths to these two solids, which have anomalously low resistance to deformation near equilibrium. For Fe3C and Al3BC3, their ideal shear strength to shear modulus ratios attain remarkably high values of 1.14 and 1.34 along the (010)[ 001] and (0001) [01 (1) over bar0] slip systems, respectively. These values are more than seven times larger than the original Frenkel value of 1/2 pi (refs 4, 5) and are the highest yet reported for crystalline solids. The extraordinary stiffening of Fe3C arises from the strain-induced reversible 'cross-linking' between weakly coupled edge- and corner-sharing Fe6C slabs. This new bond formation creates a strong, three-dimensional covalent bond network that resists large shear deformation. Unlike Fe3C, no new bond forms in Al3BC3 but stiffening still occurs because strong repulsion between Al and B in a compressed Al-B bond unsettles the existing covalent bond network. These discoveries challenge the conventional wisdom that large shear modulus is a reliable predictor of hardness and strength of materials(4-7), and provide new lessons for materials selection and design.
C1 [Jiang, Chao] Los Alamos Natl Lab, Struct Property Relat Grp MST 8, Los Alamos, NM 87545 USA.
   [Srinivasan, Srivilliputhur G.] Univ N Texas, Dept Mat Sci & Engn, Denton, TX 76203 USA.
RP Jiang, C (reprint author), Univ Wisconsin, Dept Mat Sci & Engn, 1509 Univ Ave, Madison, WI 53706 USA.
EM chaopsu@gmail.com; srinivasan.srivilliputhur@unt.edu
RI Jiang, Chao/D-1957-2017
OI Jiang, Chao/0000-0003-0610-6327
FU Los Alamos National Laboratory (LANL); National Science Foundation
   [0846444]
FX C.J. acknowledges the support of a Director's Fellowship at Los Alamos
   National Laboratory (LANL), where a systematic study of cementite was
   conceived and initiated. S.G.S. acknowledges support from the National
   Science Foundation (grant number 0846444). We also thank J. Wills, M. I.
   Baskes, A. Caro, A. Misra, S. Maloy, A. Srivastava, V. Vitek and S.
   Ranganathan for their discussions.
NR 30
TC 21
Z9 21
U1 4
U2 126
PU NATURE PUBLISHING GROUP
PI LONDON
PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND
SN 0028-0836
J9 NATURE
JI Nature
PD APR 18
PY 2013
VL 496
IS 7445
BP 339
EP 342
DI 10.1038/nature12008
PG 4
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA 126FV
UT WOS:000317599200032
PM 23575634
ER

PT J
AU Samuelsen, MR
   Khare, A
   Saxena, A
   Rasmussen, KO
AF Samuelsen, Mogens R.
   Khare, Avinash
   Saxena, Avadh
   Rasmussen, Kim O.
TI Statistical mechanics of a discrete Schrodinger equation with saturable
   nonlinearity
SO PHYSICAL REVIEW E
LA English
DT Article
ID BREATHERS; SOLITONS
AB We study the statistical mechanics of the one-dimensional discrete nonlinear Schrodinger (DNLS) equation with saturable nonlinearity. Our study represents an extension of earlier work [Phys. Rev. Lett. 84, 3740 ( 2000)] regarding the statistical mechanics of the one-dimensional DNLS equation with a cubic nonlinearity. As in this earlier study, we identify the spontaneous creation of localized excitations with a discontinuity in the partition function. The fact that this phenomenon is retained in the saturable DNLS is nontrivial, since in contrast to the cubic DNLS whose nonlinear character is enhanced as the excitation amplitude increases, the saturable DNLS, in fact, becomes increasingly linear as the excitation amplitude increases. We explore the nonlinear dynamics of this phenomenon by direct numerical simulations. DOI: 10.1103/PhysRevE.87.044901
C1 [Samuelsen, Mogens R.] Tech Univ Denmark, Dept Phys, DK-2800 Lyngby, Denmark.
   [Khare, Avinash] IISER, Pune 411021, Maharashtra, India.
   [Saxena, Avadh; Rasmussen, Kim O.] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA.
   [Saxena, Avadh; Rasmussen, Kim O.] Los Alamos Natl Lab, Ctr Nonlinear Studies, Los Alamos, NM 87545 USA.
RP Samuelsen, MR (reprint author), Tech Univ Denmark, Dept Phys, DK-2800 Lyngby, Denmark.
RI Rasmussen, Kim/B-5464-2009
OI Rasmussen, Kim/0000-0002-4029-4723
NR 17
TC 2
Z9 2
U1 0
U2 3
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1539-3755
J9 PHYS REV E
JI Phys. Rev. E
PD APR 17
PY 2013
VL 87
IS 4
DI 10.1103/PhysRevE.87.044901
PG 4
WC Physics, Fluids & Plasmas; Physics, Mathematical
SC Physics
GA 129HW
UT WOS:000317830900009
PM 23679552
ER

PT J
AU Boreyko, JB
   Mruetusatorn, P
   Sarles, SA
   Retterer, ST
   Collier, CP
AF Boreyko, Jonathan B.
   Mruetusatorn, Prachya
   Sarles, Stephen A.
   Retterer, Scott T.
   Collier, C. Patrick
TI Evaporation-Induced Buckling and Fission of Microscale Droplet Interface
   Bilayers
SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Article
ID SUPPORTED LIPID-BILAYERS; PHOSPHOLIPID-BILAYERS; SHAPE TRANSFORMATIONS;
   GIANT VESICLES; MEMBRANE; NETWORKS; PERMEABILITY; RECONSTITUTION;
   ENVIRONMENTS; TRANSITIONS
AB Droplet interface bilayers (DIBs) are a robust platform for studying synthetic cellular membranes; however, to date no DIBs have been produced at cellular length scales. Here, we create microscale droplet interface bilayers (mu DIBs) at the interface between aqueous femtoliter-volume droplets within an oil-filled microfluidic channel. The uniquely large area-to-volume ratio of the droplets results in strong evaporation effects, causing the system to transition through three distinct regimes. First, the two adjacent droplets shrink into the shape of a single spherical droplet, where an augmented lipid bilayer partitions two hemispherical volumes. In the second regime, the combined effects of the shrinking monolayers and growing bilayer force the confined bilayer to buckle to conserve its mass. Finally, at a critical bending moment, the buckling bilayer fissions a vesicle to regulate its shape and mass. The mu DIBs produced here enable evaporation-induced bilayer dynamics reminiscent of endo- and exocytosis in cells.
C1 [Boreyko, Jonathan B.; Retterer, Scott T.; Collier, C. Patrick] Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Oak Ridge, TN 37831 USA.
   [Retterer, Scott T.] Oak Ridge Natl Lab, Biol & Nanoscale Syst Grp, Oak Ridge, TN 37831 USA.
   [Mruetusatorn, Prachya] Univ Tennessee, Dept Biosyst Engn & Soil Sci, Knoxville, TN 37996 USA.
   [Sarles, Stephen A.] Univ Tennessee, Dept Mech Aerosp & Biomed Engn, Knoxville, TN 37996 USA.
RP Collier, CP (reprint author), Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Oak Ridge, TN 37831 USA.
EM colliercp@ornl.gov
RI Retterer, Scott/A-5256-2011; Collier, Charles/C-9206-2016
OI Retterer, Scott/0000-0001-8534-1979; Collier,
   Charles/0000-0002-8198-793X
FU Oak Ridge National Laboratory by the Scientific User Facilities
   Division, Office of Basic Energy Sciences, U.S. Department of Energy
FX This research was conducted at the Center for Nanophase Materials
   Sciences, which is sponsored at Oak Ridge National Laboratory by the
   Scientific User Facilities Division, Office of Basic Energy Sciences,
   U.S. Department of Energy.
NR 60
TC 12
Z9 12
U1 1
U2 77
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0002-7863
J9 J AM CHEM SOC
JI J. Am. Chem. Soc.
PD APR 17
PY 2013
VL 135
IS 15
BP 5545
EP 5548
DI 10.1021/ja4019435
PG 4
WC Chemistry, Multidisciplinary
SC Chemistry
GA 129VT
UT WOS:000317872800015
PM 23550820
ER

PT J
AU Chatterji, T
   Jalarvo, N
AF Chatterji, Tapan
   Jalarvo, Niina
TI Low energy nuclear spin excitations in Ho metal investigated by high
   resolution neutron spectroscopy
SO JOURNAL OF PHYSICS-CONDENSED MATTER
LA English
DT Article
ID HOLMIUM; HEAT
AB We have investigated the low energy excitations in metallic Ho by high resolution neutron spectroscopy. We found at T = 3 K clear inelastic peaks in the energy loss and energy gain sides, along with the central elastic peak. The energy of this low energy excitation, which is 26.59 +/- 0.02 mu eV at T = 3 K, decreased continuously and became zero at T-N approximate to 130 K. By fitting the data in the temperature range 100-127.5 K with a power law we obtained the power-law exponent beta = 0.37 +/- 0.02, which agrees with the expected value beta = 0.367 for a three-dimensional Heisenberg model. Thus the energy of the low energy excitations can be associated with the order parameter.
C1 [Chatterji, Tapan] Inst Max Von Laue Paul Langevin, F-38042 Grenoble 9, France.
   [Jalarvo, Niina] Oak Ridge Natl Lab, JCNS Outstn Spallat Neutron Source, Oak Ridge, TN 37831 USA.
   [Jalarvo, Niina] Forschungszentrum Julich, Julich Ctr Neutron Sci, D-52425 Julich, Germany.
RP Chatterji, T (reprint author), Inst Max Von Laue Paul Langevin, 6 Rue Joules Horowitz,BP 156, F-38042 Grenoble 9, France.
EM chatterji@ill.fr
RI Jalarvo, Niina/Q-1320-2015
OI Jalarvo, Niina/0000-0003-0644-6866
NR 25
TC 1
Z9 2
U1 0
U2 2
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0953-8984
J9 J PHYS-CONDENS MAT
JI J. Phys.-Condes. Matter
PD APR 17
PY 2013
VL 25
IS 15
AR 156002
DI 10.1088/0953-8984/25/15/156002
PG 5
WC Physics, Condensed Matter
SC Physics
GA 112VN
UT WOS:000316622400024
ER

PT J
AU Lee, GD
   Yoon, E
   Wang, CZ
   Ho, KM
AF Lee, Gun-Do
   Yoon, Euijoon
   Wang, Cai-Zhuang
   Ho, Kai-Ming
TI Atomistic processes of grain boundary motion and annihilation in
   graphene
SO JOURNAL OF PHYSICS-CONDENSED MATTER
LA English
DT Article
ID CHEMICAL-VAPOR-DEPOSITION; LARGE-AREA; FILMS; CARBON; DEFECT; EDGES
AB The motion and annihilation of a grain boundary (GB) in graphene are investigated by tight-binding molecular dynamics (TBMD) simulation and ab initio local density approximation total energy calculation. A meandering structure of the GB is found to be energetically more favorable than other structures, in good agreement with experiment. It is observed in the TBMD simulation that evaporation of carbon dimers and sequential Stone-Wales transformations of carbon bonds lead to rapid motion and annihilation of the GB. The dimer erection and evaporation are found to proceed by formation of an adatom due to bond breaking. These results shed interesting light on the fabrication of high-quality graphene.
C1 [Lee, Gun-Do; Yoon, Euijoon] Seoul Natl Univ, Dept Mat Sci & Engn, Seoul 151742, South Korea.
   [Yoon, Euijoon] Seoul Natl Univ, Dept Mat Sci & Engn, WCU Hybrid Mat Program, Seoul 151742, South Korea.
   [Yoon, Euijoon] Seoul Natl Univ, Adv Inst Convergence Technol, Energy Semicond Res Ctr, Suwon 443270, South Korea.
   [Wang, Cai-Zhuang; Ho, Kai-Ming] US DOE, Ames Lab, Ames, IA 50011 USA.
   [Wang, Cai-Zhuang; Ho, Kai-Ming] Iowa State Univ, Dept Phys, Ames, IA 50011 USA.
RP Lee, GD (reprint author), Seoul Natl Univ, Dept Mat Sci & Engn, Seoul 151742, South Korea.
EM gdlee@snu.ac.kr
RI Lee, Gun-Do/L-1259-2013
OI Lee, Gun-Do/0000-0001-8328-8625
FU Brain Korea 21 (BK21) program, World Class University (WCU) program of
   the Ministry of Education of Korea [R31-2008-000-10075-0]; Basic Science
   Research Program through the National Research Foundation of Korea
   (NRF); Ministry of Education, Science and Technology (MEST)
   [2012-0003007, 2012-0000904]; KISTI under the Strategic Supercomputing
   Applications Support Program; US Department of Energy, Basic Energy
   Sciences, Division of Materials Science and Engineering; National Energy
   Research Supercomputing Centre (NERSC) in Berkeley, CA
   [DE-AC02-07CH11358]
FX This work was supported by the Brain Korea 21 (BK21) program, World
   Class University (WCU) program (R31-2008-000-10075-0) of the Ministry of
   Education of Korea. This work was also supported by the Basic Science
   Research Program through the National Research Foundation of Korea (NRF)
   funded by the Ministry of Education, Science and Technology (MEST) (Nos
   2012-0003007 and 2012-0000904). The authors also acknowledge the support
   from KISTI under the Strategic Supercomputing Applications Support
   Program. The work at Ames Laboratory was supported by the US Department
   of Energy, Basic Energy Sciences, Division of Materials Science and
   Engineering, including a grant of computer time at the National Energy
   Research Supercomputing Centre (NERSC) in Berkeley, CA under Contract
   No. DE-AC02-07CH11358.
NR 29
TC 7
Z9 7
U1 0
U2 49
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0953-8984
J9 J PHYS-CONDENS MAT
JI J. Phys.-Condes. Matter
PD APR 17
PY 2013
VL 25
IS 15
AR 155301
DI 10.1088/0953-8984/25/15/155301
PG 6
WC Physics, Condensed Matter
SC Physics
GA 112VN
UT WOS:000316622400005
PM 23507622
ER

PT J
AU Zimmerman, JA
   Jones, RE
AF Zimmerman, Jonathan A.
   Jones, Reese E.
TI The application of an atomistic J-integral to a ductile crack
SO JOURNAL OF PHYSICS-CONDENSED MATTER
LA English
DT Article
ID DISLOCATION NUCLEATION; FCC METALS; TIP; SIMULATIONS; SCALE; ENERGY
AB In this work we apply a Lagrangian kernel-based estimator of continuum fields to atomic data to estimate the J-integral for the emission dislocations from a crack tip. Face-centered cubic (fcc) gold and body-centered cubic (bcc) iron modeled with embedded atom method (EAM) potentials are used as example systems. The results of a single crack with a K-loading compare well to an analytical solution from anisotropic linear elastic fracture mechanics. We also discovered that in the post-emission of dislocations from the crack tip there is a loop size-dependent contribution to the J-integral. For a system with a finite width crack loaded in simple tension, the finite size effects for the systems that were feasible to compute prevented precise agreement with theory. However, our results indicate that there is a trend towards convergence.
C1 [Zimmerman, Jonathan A.; Jones, Reese E.] Sandia Natl Labs, Mech Mat Dept, Livermore, CA 94551 USA.
RP Zimmerman, JA (reprint author), Sandia Natl Labs, Mech Mat Dept, Livermore, CA 94551 USA.
EM jzimmer@sandia.gov
FU Engineering Science Research Foundation (ESRF) at Sandia National
   Laboratories; US Department of Energy's National Nuclear Security
   Administration [DE-AC04-94AL85000]
FX We thank S A Lurie (Institute of Applied Mechanics, Russian Academy of
   Sciences) for suggesting this avenue of research and Professor D Farkas
   (Virginia Tech) for supplying the Fe EAM potential parameterization.
   This work was supported by the Engineering Science Research Foundation
   (ESRF) at Sandia National Laboratories. Sandia National Laboratories is
   a multi-program laboratory managed and operated by Sandia Corporation, a
   wholly owned subsidiary of Lockheed Martin Corporation, for the US
   Department of Energy's National Nuclear Security Administration under
   contract DE-AC04-94AL85000.
NR 30
TC 3
Z9 3
U1 5
U2 27
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0953-8984
J9 J PHYS-CONDENS MAT
JI J. Phys.-Condes. Matter
PD APR 17
PY 2013
VL 25
IS 15
AR 155402
DI 10.1088/0953-8984/25/15/155402
PG 10
WC Physics, Condensed Matter
SC Physics
GA 112VN
UT WOS:000316622400011
PM 23528925
ER

PT J
AU Song, SJ
   Lauber, C
   Costello, EK
   Lozupone, CA
   Humphrey, G
   Berg-Lyons, D
   Caporaso, JG
   Knights, D
   Clemente, JC
   Nakielny, S
   Gordon, JI
   Fierer, N
   Knight, R
AF Song, Se Jin
   Lauber, Christian
   Costello, Elizabeth K.
   Lozupone, Catherine A.
   Humphrey, Gregory
   Berg-Lyons, Donna
   Caporaso, J. Gregory
   Knights, Dan
   Clemente, Jose C.
   Nakielny, Sara
   Gordon, Jeffrey I.
   Fierer, Noah
   Knight, Rob
TI Cohabiting family members share microbiota with one another and with
   their dogs
SO ELIFE
LA English
DT Article
ID GUT MICROBIOME; DIVERSITY; SKIN; AGE; COMMUNITIES; FLORA
AB Human-associated microbial communities vary across individuals: possible contributing factors include (genetic) relatedness, diet, and age. However, our surroundings, including individuals with whom we interact, also likely shape our microbial communities. To quantify this microbial exchange, we surveyed fecal, oral, and skin microbiota from 60 families (spousal units with children, dogs, both, or neither). Household members, particularly couples, shared more of their microbiota than individuals from different households, with stronger effects of co-habitation on skin than oral or fecal microbiota. Dog ownership significantly increased the shared skin microbiota in cohabiting adults, and dog-owning adults shared more 'skin' microbiota with their own dogs than with other dogs. Although the degree to which these shared microbes have a true niche on the human body, vs transient detection after direct contact, is unknown, these results suggest that direct and frequent contact with our cohabitants may significantly shape the composition of our microbial communities.
C1 [Song, Se Jin; Fierer, Noah] Univ Colorado, Dept Ecol & Evolutionary Biol, Boulder, CO 80309 USA.
   [Lauber, Christian; Humphrey, Gregory; Berg-Lyons, Donna; Fierer, Noah] Univ Colorado, Cooperat Inst Res Environm Sci, Boulder, CO 80309 USA.
   [Costello, Elizabeth K.] Stanford Univ, Dept Microbiol & Immunol, Sch Med, Stanford, CA 94305 USA.
   [Lozupone, Catherine A.; Clemente, Jose C.] Univ Colorado, Dept Chem & Biochem, Boulder, CO 80309 USA.
   [Caporaso, J. Gregory] No Arizona Univ, Dept Comp Sci, Flagstaff, AZ 86011 USA.
   [Caporaso, J. Gregory] Argonne Natl Lab, Inst Genom & Syst Biol, Argonne, IL 60439 USA.
   [Knights, Dan] Univ Minnesota, Dept Comp Sci & Engn, Minneapolis, MN USA.
   [Knights, Dan] Univ Minnesota, Inst Biotechnol, St Paul, MN USA.
   [Nakielny, Sara] Univ Calif San Francisco, Dept Biochem & Biophys, Howard Hughes Med Inst, San Francisco, CA 94143 USA.
   [Gordon, Jeffrey I.] Washington Univ, Sch Med, Ctr Genome Sci & Syst Biol, St Louis, MO 63130 USA.
   [Knight, Rob] Univ Colorado, Howard Hughes Med Inst, Dept Chem & Biochem, Boulder, CO 80309 USA.
   [Knight, Rob] Univ Colorado, Biofrontiers Inst, Boulder, CO 80309 USA.
RP Knight, R (reprint author), Univ Colorado, Howard Hughes Med Inst, Dept Chem & Biochem, Boulder, CO 80309 USA.
EM rob.knight@colorado.edu
RI Knight, Rob/D-1299-2010
FU Howard Hughes Medical Institute; Crohn's and Colitis Foundation of
   America; National Institutes of Health [HG4872, HG4866]
FX Howard Hughes Medical Institute Rob Knight; Crohn's and Colitis
   Foundation of America Jeffrey I Gordon; National Institutes of Health
   HG4872, HG4866 Rob Knight
NR 32
TC 132
Z9 136
U1 10
U2 77
PU ELIFE SCIENCES PUBLICATIONS LTD
PI CAMBRIDGE
PA SHERATON HOUSE, CASTLE PARK, CAMBRIDGE, CB3 0AX, ENGLAND
SN 2050-084X
J9 ELIFE
JI eLife
PD APR 16
PY 2013
VL 2
AR e00458
DI 10.7554/eLife.00458
PG 22
WC Biology
SC Life Sciences & Biomedicine - Other Topics
GA 274NV
UT WOS:000328614100004
PM 23599893
ER

PT J
AU Mei, F
   Hayes, PL
   Ortega, A
   Taylor, JW
   Allan, JD
   Gilman, J
   Kuster, W
   de Gouw, J
   Jimenez, JL
   Wang, J
AF Mei, Fan
   Hayes, Patrick L.
   Ortega, Amber
   Taylor, Jonathan W.
   Allan, James D.
   Gilman, Jessica
   Kuster, William
   de Gouw, Joost
   Jimenez, Jose L.
   Wang, Jian
TI Droplet activation properties of organic aerosols observed at an urban
   site during CalNex-LA
SO JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
LA English
DT Review
DE Hygroscopicity; Mixing state; CCN; Organic aerosol; Oxidation state;
   Atmospheric aging
ID CLOUD CONDENSATION NUCLEI; SIZE-RESOLVED CCN; SINGLE-PARAMETER
   REPRESENTATION; HYGROSCOPIC GROWTH; MIXING STATE; CHEMICAL-COMPOSITION;
   MASS-SPECTROMETRY; HIGH-RESOLUTION; RAIN-FOREST; PART 1
AB Size-resolved cloud condensation nuclei (CCN) spectra and aerosol chemical composition were characterized at an urban supersite in Pasadena, California, from 15 May to 4 June 2010, during the CalNex campaign. The derived hygroscopicity (CCN) of CCN-active particles with diameter between 97 and 165 nm ranged from 0.05 to 0.4. Diurnal variation showed a slight decrease of CCN from 8:00 to 16:00 (from 0.24 to 0.20), which is attributed to increasing organics volume fraction resulted from secondary organic aerosol (SOA) formation. The derived hygroscopicity distribution and maximum activated fraction of the size selected particles were examined as functions of photochemical age. The result indicates that condensation of secondary species (e.g., SOA and sulfate) quickly converted hydrophobic particles to hydrophilic ones, and during daytime, nearly every particle became a CCN at similar to 0.4% in just a few hours. Based on CCN and aerosol chemical composition, the organic hygroscopicity (org) was derived, and ranged from 0.05 to 0.23 with an average value of 0.13, consistent with the results from earlier studies. The derived org generally increased with the organic oxidation level, and most of the variation in org could be explained by the variation of the organic O:C atomic ratio alone. The least squares fit of the data yielded org=(0.83 +/- 0.06)x(O:C)+(-0.19 +/- 0.02). Compared to previous results based on CCN measurements of laboratory generated aerosols, org derived from measurements during the CalNex campaign exhibited stronger increase with O:C atomic ratio and therefore substantially higher values for organics with average O:C greater than 0.5.
C1 [Mei, Fan; Wang, Jian] Brookhaven Natl Lab, Upton, NY 11973 USA.
   [Hayes, Patrick L.; Ortega, Amber; Jimenez, Jose L.] Univ Colorado, NOAA, Cooperat Inst Res Environm Sci, Boulder, CO 80309 USA.
   [Hayes, Patrick L.; Ortega, Amber; Jimenez, Jose L.] Univ Colorado, Dept Chem & Biochem, Boulder, CO 80309 USA.
   [Taylor, Jonathan W.; Allan, James D.] Univ Manchester, Sch Earth Atmospher & Environm Sci, Manchester, Lancs, England.
   [Allan, James D.] Univ Manchester, Natl Ctr Atmospher Sci, Manchester, Lancs, England.
   [Gilman, Jessica; Kuster, William; de Gouw, Joost] NOAA, Earth Syst Res Lab, Boulder, CO USA.
   [Mei, Fan] Pacific NW Natl Lab, Richland, WA 99352 USA.
RP Wang, J (reprint author), Brookhaven Natl Lab, 75 Rutherford Dr,Bldg 815E, Upton, NY 11973 USA.
EM jian@bnl.gov
RI Jimenez, Jose/A-5294-2008; Kuster, William/E-7421-2010; Gilman,
   Jessica/E-7751-2010; de Gouw, Joost/A-9675-2008; Manager, CSD
   Publications/B-2789-2015; Wang, Jian/G-9344-2011; Allan,
   James/B-1160-2010; Mei, Fan/D-9953-2013; Ortega, Amber/B-5548-2014
OI Taylor, Jonathan/0000-0002-2120-186X; Jimenez, Jose/0000-0001-6203-1847;
   Kuster, William/0000-0002-8788-8588; Gilman,
   Jessica/0000-0002-7899-9948; de Gouw, Joost/0000-0002-0385-1826; Mei,
   Fan/0000-0003-4285-2749; Allan, James/0000-0001-6492-4876; Ortega,
   Amber/0000-0002-4381-7892
FU Office of Biological and Environmental Research [DE-AC02-98CH10866];
   CIRES; UK National Environment Research Council [NE/H008136/1]; UK
   Natural Environment Research Council [NE/H008136/1]
FX This research was performed with support from the Office of Biological
   and Environmental Research under contract number DE-AC02-98CH10866. We
   acknowledge Caltech for hosting the supersite and logistics support from
   California Air Resources Board, NOAA, and UCLA. The authors acknowledge
   the US Department of Energy ARM program for providing some of
   instruments deployed in this study. Patrick L. Hayes and Jose L. Jimenez
   thank CARB 08-319/11-305 and DOE (BER/ASR) DE-SC0006035 and
   DE-FG02-11ER65293, as well as a CIRES Visiting Fellowship to Patrick L.
   Hayes. The SP2 data were supported by the UK National Environment
   Research Council project Multiscale Chemical Composition of Carbonaceous
   particles and Coatings (MC4) [Grant ref: NE/H008136/1]. The University
   of Manchester activities were supported by The UK Natural Environment
   Research Council through a PhD studentship and the project Multiscale
   Chemical Composition of Carbonaceous particles and Coatings (MC4) [Grant
   ref: NE/H008136/1].
NR 109
TC 17
Z9 17
U1 2
U2 50
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 2169-897X
EI 2169-8996
J9 J GEOPHYS RES-ATMOS
JI J. Geophys. Res.-Atmos.
PD APR 16
PY 2013
VL 118
IS 7
BP 2903
EP 2917
DI 10.1002/jgrd.50285
PG 15
WC Meteorology & Atmospheric Sciences
SC Meteorology & Atmospheric Sciences
GA 153QT
UT WOS:000319618300017
ER

PT J
AU Hersey, SP
   Craven, JS
   Metcalf, AR
   Lin, J
   Lathem, T
   Suski, KJ
   Cahill, JF
   Duong, HT
   Sorooshian, A
   Jonsson, HH
   Shiraiwa, M
   Zuend, A
   Nenes, A
   Prather, KA
   Flagan, RC
   Seinfeld, JH
AF Hersey, Scott P.
   Craven, Jill S.
   Metcalf, Andrew R.
   Lin, Jack
   Lathem, Terry
   Suski, Kaitlyn J.
   Cahill, John F.
   Duong, Hanh T.
   Sorooshian, Armin
   Jonsson, Haflidi H.
   Shiraiwa, Manabu
   Zuend, Andreas
   Nenes, Athanasios
   Prather, Kimberly A.
   Flagan, Richard C.
   Seinfeld, John H.
TI Composition and hygroscopicity of the Los Angeles Aerosol: CalNex
SO JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
LA English
DT Review
DE urban aerosol; hygroscopicity; CCN; CalNex
ID CLOUD CONDENSATION NUCLEI; LASER-INDUCED INCANDESCENCE;
   ORGANIC-INORGANIC AEROSOLS; MASS-SPECTRAL SIGNATURES; LIQUID
   PHASE-SEPARATION; CALIFORNIA AIR-QUALITY; MIXING STATE; SOURCE
   APPORTIONMENT; ACTIVITY-COEFFICIENTS; PARTICULATE MATTER
AB Aircraft-based measurements of aerosol composition, either bulk or single-particle, and both subsaturated and supersaturated hygroscopicity were made in the Los Angeles Basin and its outflows during May 2010 during the CalNex field study. Aerosol composition evolves from source-rich areas in the western Basin to downwind sites in the eastern Basin, evidenced by transition from an external to internal mixture, as well as enhancements in organic O:C ratio, the amount of organics and nitrate internally mixed on almost all particle types, and coating thickness on refractory black carbon (rBC). Transport into hot, dilute outflow regions leads to significant volatilization of semivolatile material, resulting in a unimodal aerosol comprising primarily oxygenated, low-volatility, water-soluble organics and sulfate. The fraction of particles with rBC or soot cores is between 27 and 51% based on data from a Single Particle Soot Photometer (SP2) and Aerosol Time of Flight Mass Spectrometer (ATOFMS). Secondary organics appear to inhibit subsaturated water uptake in aged particles, while CCN activity is enhanced with photochemical age. A biomass-burning event resulted in suppression of subsaturated hygroscopicity but enhancement in CCN activity, suggesting that BB particles may be nonhygroscopic at subsaturated RH but are important sources of CCN. Aerosol aging and biomass burning can lead to discrepancies between subsaturated and supersaturated hygroscopicity that may be related to mixing state. In the cases of biomass burning aerosol and aged particles coated with secondary material, more than a single parameter representation of subsaturated hygroscopicity and CCN activity is needed.
C1 [Hersey, Scott P.; Craven, Jill S.; Metcalf, Andrew R.; Shiraiwa, Manabu; Zuend, Andreas; Flagan, Richard C.; Seinfeld, John H.] CALTECH, Pasadena, CA 91125 USA.
   [Metcalf, Andrew R.] Sandia Natl Labs, Combust Res Facil, Livermore, CA USA.
   [Lin, Jack; Lathem, Terry; Nenes, Athanasios] Georgia Inst Technol, Sch Earth & Atmospher Sci, Atlanta, GA 30332 USA.
   [Suski, Kaitlyn J.; Cahill, John F.; Prather, Kimberly A.] Univ Calif San Diego, La Jolla, CA 92093 USA.
   [Duong, Hanh T.; Sorooshian, Armin] Univ Arizona, Tucson, AZ USA.
   [Jonsson, Haflidi H.] USN, Postgrad Sch, Monterey, CA USA.
   [Nenes, Athanasios] Georgia Inst Technol, Sch Chem & Biomol Engn, Atlanta, GA 30332 USA.
RP Seinfeld, JH (reprint author), CALTECH, Pasadena, CA 91125 USA.
EM seinfeld@caltech.edu
RI Shiraiwa, Manabu/A-6246-2010; Metcalf, Andrew/C-5666-2012; Prather,
   Kimberly/A-3892-2008
OI Zuend, Andreas/0000-0003-3101-8521; Sorooshian,
   Armin/0000-0002-2243-2264; Cahill, John/0000-0002-9866-4010; Shiraiwa,
   Manabu/0000-0003-2532-5373; Metcalf, Andrew/0000-0003-0385-1356;
   Prather, Kimberly/0000-0003-3048-9890
FU NOAA [NA09OAR4310128]; CARB [09-333]
FX This work was supported by NOAA grant NA09OAR4310128 and CARB agreement
   #09-333.
NR 122
TC 37
Z9 37
U1 8
U2 129
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 2169-897X
EI 2169-8996
J9 J GEOPHYS RES-ATMOS
JI J. Geophys. Res.-Atmos.
PD APR 16
PY 2013
VL 118
IS 7
BP 3016
EP 3036
DI 10.1002/jgrd.50307
PG 21
WC Meteorology & Atmospheric Sciences
SC Meteorology & Atmospheric Sciences
GA 153QT
UT WOS:000319618300025
ER

PT J
AU Skorczewski, T
   Erickson, LG
   Fogelson, AL
AF Skorczewski, Tyler
   Erickson, Lindsay Growl
   Fogelson, Aaron L.
TI Platelet Motion near a Vessel Wall or Thrombus Surface in
   Two-Dimensional Whole Blood Simulations
SO BIOPHYSICAL JOURNAL
LA English
DT Article
ID VON-WILLEBRAND-FACTOR; PARTICLES; FLOW; AGGREGATION; ACTIVATION;
   SCATTERING; TRANSPORT; COMPLEX; BONDS; MODEL
AB Computational simulations using a two-dimensional lattice-Boltzmann immersed boundary method were conducted to investigate the motion of platelets near a vessel wall and close to an intravascular thrombus. Physiological volume fractions of deformable red blood cells and rigid platelet-size elliptic particles were studied under arteriolar flow conditions. Tumbling of platelets in the red-blood-cell depleted zone near the vessel walls was strongly influenced by nearby red blood cells. The thickness of the red-blood-cell depleted zone was greatly reduced near a thrombus, and platelets in this zone were pushed close to the surface of the thrombus to distances that would facilitate their cohesion to it. The distance, nature, and duration of close platelet-thrombus encounters were influenced by the porosity of the thrombus. The strong influence on platelet-thrombus encounters of red-blood-cell motion and thrombus porosity must be taken into account to understand the dynamics of platelet attachment to a growing thrombus.
C1 [Skorczewski, Tyler; Fogelson, Aaron L.] Univ Utah, Dept Math, Salt Lake City, UT 84112 USA.
   [Erickson, Lindsay Growl] Sandia Natl Labs, Livermore, CA USA.
   [Fogelson, Aaron L.] Univ Utah, Dept Bioengn, Salt Lake City, UT 84112 USA.
RP Fogelson, AL (reprint author), Univ Utah, Dept Math, Salt Lake City, UT 84112 USA.
EM fogelson@math.utah.edu
FU National Institutes of Health [1R01GM090203-01]; National Science
   Foundation [DMS-0540779, DMS-1160432]
FX This work was supported by National Institutes of Health grant No.
   1R01GM090203-01, National Science Foundation grants No. DMS-0540779 and
   No. DMS-1160432, and an allocation of resources at the University of
   Utah Center for High Performance Computing.
NR 33
TC 24
Z9 24
U1 3
U2 23
PU CELL PRESS
PI CAMBRIDGE
PA 600 TECHNOLOGY SQUARE, 5TH FLOOR, CAMBRIDGE, MA 02139 USA
SN 0006-3495
J9 BIOPHYS J
JI Biophys. J.
PD APR 16
PY 2013
VL 104
IS 8
BP 1764
EP 1772
DI 10.1016/j.bpj.2013.01.061
PG 9
WC Biophysics
SC Biophysics
GA 135BZ
UT WOS:000318262300017
PM 23601323
ER

PT J
AU Park, K
   Bell, CB
   Liu, LV
   Wang, D
   Xue, GQ
   Kwak, Y
   Wong, SD
   Light, KM
   Zhao, JY
   Alp, EE
   Yoda, Y
   Saito, M
   Kobayashi, Y
   Ohta, T
   Seto, M
   Que, L
   Solomon, EI
AF Park, Kiyoung
   Bell, Caleb B., III
   Liu, Lei V.
   Wang, Dong
   Xue, Genqiang
   Kwak, Yeonju
   Wong, Shaun D.
   Light, Kenneth M.
   Zhao, Jiyong
   Alp, E. Ercan
   Yoda, Yoshitaka
   Saito, Makina
   Kobayashi, Yasuhiro
   Ohta, Takehiro
   Seto, Makoto
   Que, Lawrence, Jr.
   Solomon, Edward I.
TI Nuclear resonance vibrational spectroscopic and computational study of
   high-valent diiron complexes relevant to enzyme intermediates
SO PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF
   AMERICA
LA English
DT Article
DE iron-oxo cores; Fe enzymes
ID COLI RIBONUCLEOTIDE REDUCTASE; METHANE MONOOXYGENASE HYDROXYLASE;
   DIAMOND CORE; C-H; CATALYTIC CYCLE; ACTIVATION; SCATTERING; MECHANISM;
   COFACTOR; MODEL
AB High-valent intermediates of binuclear nonheme iron enzymes are structurally unknown despite their importance for understanding enzyme reactivity. Nuclear resonance vibrational spectroscopy combined with density functional theory calculations has been applied to structurally well-characterized high-valent mono-and di-oxo bridged binuclear Fe model complexes. Low-frequency vibrational modes of these high-valent diiron complexes involving Fe motion have been observed and assigned. These are independent of Fe oxidation state and show a strong dependence on spin state. It is important to note that they are sensitive to the nature of the Fe-2 core bridges and provide the basis for interpreting parallel nuclear resonance vibrational spectroscopy data on the high-valent oxo intermediates in the binuclear nonheme iron enzymes.
C1 [Park, Kiyoung; Bell, Caleb B., III; Liu, Lei V.; Kwak, Yeonju; Wong, Shaun D.; Light, Kenneth M.; Solomon, Edward I.] Stanford Univ, Dept Chem, Stanford, CA 94305 USA.
   [Wang, Dong; Xue, Genqiang; Que, Lawrence, Jr.] Univ Minnesota, Dept Chem, Minneapolis, MN 55455 USA.
   [Wang, Dong; Xue, Genqiang; Que, Lawrence, Jr.] Univ Minnesota, Ctr Met Biocatalysis, Minneapolis, MN 55455 USA.
   [Zhao, Jiyong; Alp, E. Ercan] Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA.
   [Yoda, Yoshitaka] Japan Synchrotron Radiat Res Inst, Hyogo 6795198, Japan.
   [Saito, Makina; Kobayashi, Yasuhiro; Seto, Makoto] Kyoto Univ, Inst Res Reactor, Osaka 5900494, Japan.
   [Ohta, Takehiro] Kyushu Univ, Inst Mat Chem & Engn, Fukuoka 8128581, Japan.
   [Ohta, Takehiro] Kyushu Univ, Int Inst Carbon Neutral Energy Res, Fukuoka 8128581, Japan.
RP Que, L (reprint author), Univ Minnesota, Dept Chem, 207 Pleasant St SE, Minneapolis, MN 55455 USA.
EM larryque@umn.edu; edward.solomon@stanford.edu
RI Park, Kiyoung/J-3204-2014; U-ID, Kyushu/C-5291-2016
FU Japan Synchrotron Radiation Research Institute [2010B1569, 2011A1326];
   Department of Energy, Office of Science, Office of Basic Energy Sciences
   [DE-AC02-06CH11357]; National Science Foundation [MCB-0919027]; National
   Institutes of Health [GM-40392, GM-38767]; Japan Society for the
   Promotion of Science [21750064]; Japan Science and Technology Agency
   JST-Core Research for Evolutional Science and Technology
FX Use of synchrotron radiation at the BL09XU of SPring-8 and the Advanced
   Photon Source at Argonne National Laboratory was supported by Japan
   Synchrotron Radiation Research Institute (Proposals 2010B1569 and
   2011A1326) and the Department of Energy, Office of Science, Office of
   Basic Energy Sciences (Contract DE-AC02-06CH11357), respectively.
   Financial support for this research was provided by National Science
   Foundation Grant MCB-0919027 (to E.I.S.), National Institutes of Health
   Grants GM-40392 (to E.I.S.) and GM-38767 (to L.Q.), Japan Society for
   the Promotion of Science Grants-in-Aid for Young Scientists [B] 21750064
   (to T.O.) and Japan Science and Technology Agency JST-Core Research for
   Evolutional Science and Technology (to M.S.).
NR 38
TC 9
Z9 9
U1 1
U2 62
PU NATL ACAD SCIENCES
PI WASHINGTON
PA 2101 CONSTITUTION AVE NW, WASHINGTON, DC 20418 USA
SN 0027-8424
J9 P NATL ACAD SCI USA
JI Proc. Natl. Acad. Sci. U. S. A.
PD APR 16
PY 2013
VL 110
IS 16
BP 6275
EP 6280
DI 10.1073/pnas.1304238110
PG 6
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA 132BA
UT WOS:000318041500021
PM 23576760
ER

PT J
AU Zhang, L
   Meng, Y
   Dera, P
   Yang, WG
   Mao, WL
   Mao, HK
AF Zhang, Li
   Meng, Yue
   Dera, Przemyslaw
   Yang, Wenge
   Mao, Wendy L.
   Mao, Ho-kwang
TI Single-crystal structure determination of (Mg,Fe)SiO3 postperovskite
SO PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF
   AMERICA
LA English
DT Article
ID POST-PEROVSKITE PHASE; EARTHS LOWER MANTLE; EQUATION-OF-STATE;
   HIGH-PRESSURES; MGSIO3; TRANSITION; GPA
AB Knowledge of the structural properties of mantle phases is critical for understanding the enigmatic seismic features observed in the Earth's lower mantle down to the core-mantle boundary. However, our knowledge of lower mantle phase equilibria at high pressure (P) and temperature (T) conditions has been based on limited information provided by powder X-ray diffraction technique and theoretical calculations. Here, we report the in situ single-crystal structure determination of (Mg,Fe)SiO3 postperovskite (ppv) at high P and after temperature quenching in a diamond anvil cell. Using a newly developed multigrain single-crystal X-ray diffraction analysis technique in a diamond anvil cell, crystallographic orientations of over 100 crystallites were simultaneously determined at high P in a coarse-grained polycrystalline sample containing submicron ppv grains. Conventional single-crystal structural analysis and refinement methods were applied for a few selected ppv crystallites, which demonstrate the feasibility of the in situ study of crystal structures of submicron crystallites in a multiphase polycrystalline sample contained within a high P device. The similarity of structural models for single-crystal Fe-bearing ppv (similar to 10 mol% Fe) and Fe-free ppv from previous theoretical calculations suggests that the Fe content in the mantle has a negligible effect on the crystal structure of the ppv phase.
C1 [Zhang, Li; Mao, Ho-kwang] Ctr High Pressure Sci & Technol Adv Res, Shanghai 201203, Peoples R China.
   [Zhang, Li; Mao, Ho-kwang] Carnegie Inst Sci, Geophys Lab, Washington, DC 20015 USA.
   [Meng, Yue] Carnegie Inst, Geophys Lab, High Pressure Collaborat Access Team, Argonne, IL 60439 USA.
   [Dera, Przemyslaw] Univ Chicago, Argonne Natl Lab, Ctr Adv Radiat Sources, Argonne, IL 60439 USA.
   [Dera, Przemyslaw] Hawaii Inst Geophys & Planetol, Sch Ocean & Earth Sci & Technol, Honolulu, HI 96822 USA.
   [Yang, Wenge] Carnegie Inst, Geophys Lab, High Pressure Synerget Consortium, Argonne, IL 60439 USA.
   [Mao, Wendy L.] Stanford Univ, Stanford, CA 94305 USA.
   [Mao, Wendy L.] SLAC Natl Accelerator Lab, Menlo Pk, CA 94025 USA.
RP Zhang, L (reprint author), Ctr High Pressure Sci & Technol Adv Res, Shanghai 201203, Peoples R China.
EM lzhang@ciw.edu; mao@gl.ciw.edu
RI Dera, Przemyslaw/F-6483-2013; Mao, Wendy/D-1885-2009; Yang,
   Wenge/H-2740-2012; Zhang, Li/I-4658-2013
FU National Science Foundation (NSF) [EAR-0911492, EAR-1055454,
   EAR-1119504]; EFree, an Energy Frontier Research Center; US Department
   of Energy (DOE)-Office of Basic Energy Sciences (BES) [DE-SC0001057];
   Carnegie Institution of Washington; Carnegie/Department of Energy
   Alliance Center; University of Nevada, Las Vegas; Lawrence Livermore
   National Laboratory through DOE National Nuclear Security
   Administration; DOE Office of Science, and BES; NSF [MRI-1126249];
   DOE-BES [DE-AC02-06CH11357]
FX We thank A. Kyono for his helpful discussions and S. Merkel for
   introducing us to the indexing software. This research was supported by
   National Science Foundation (NSF) Grants EAR-0911492, EAR-1055454, and
   EAR-1119504. High Pressure Synergetic Consortium (HPSynC) is supported
   as part of EFree, an Energy Frontier Research Center funded by the US
   Department of Energy (DOE)-Office of Basic Energy Sciences (BES) under
   Grant DE-SC0001057. Most of the experiments were performed at HPCAT
   (Sector 16) of APS. HPCAT is supported by the Carnegie Institution of
   Washington, the Carnegie/Department of Energy Alliance Center, the
   University of Nevada, Las Vegas, and Lawrence Livermore National
   Laboratory through funding from the DOE National Nuclear Security
   Administration, the DOE Office of Science, and BES, with the undulator
   upgrade supported by NSF MRI-1126249. Portions of this work were
   performed at the 34IDE beamline, APS. Use of the APS facility was
   supported by DOE-BES under Contract DE-AC02-06CH11357.
NR 20
TC 17
Z9 17
U1 3
U2 53
PU NATL ACAD SCIENCES
PI WASHINGTON
PA 2101 CONSTITUTION AVE NW, WASHINGTON, DC 20418 USA
SN 0027-8424
J9 P NATL ACAD SCI USA
JI Proc. Natl. Acad. Sci. U. S. A.
PD APR 16
PY 2013
VL 110
IS 16
BP 6292
EP 6295
DI 10.1073/pnas.1304402110
PG 4
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA 132BA
UT WOS:000318041500023
PM 23576761
ER

PT J
AU White, GF
   Shi, Z
   Shi, L
   Wang, ZM
   Dohnalkova, AC
   Marshall, MJ
   Fredrickson, JK
   Zachara, JM
   Butt, JN
   Richardson, DJ
   Clarke, TA
AF White, Gaye F.
   Shi, Zhi
   Shi, Liang
   Wang, Zheming
   Dohnalkova, Alice C.
   Marshall, Matthew J.
   Fredrickson, James K.
   Zachara, John M.
   Butt, Julea N.
   Richardson, David J.
   Clarke, Thomas A.
TI Rapid electron exchange between surface-exposed bacterial cytochromes
   and Fe(III) minerals
SO PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF
   AMERICA
LA English
DT Article
DE mineral respiration; multiheme cytochromes; proteoliposome
ID SHEWANELLA-ONEIDENSIS MR-1; OUTER-MEMBRANE CYTOCHROMES; DECAHEME
   CYTOCHROME; MICROBIAL REDUCTION; MN(IV) REDUCTION; IRON REDUCTION; OXIDE
   SURFACE; MTRC; OMCA; TRANSPORT
AB The mineral-respiring bacterium Shewanella oneidensis uses a protein complex, MtrCAB, composed of two decaheme cytochromes, MtrC and MtrA, brought together inside a transmembrane porin, MtrB, to transport electrons across the outer membrane to a variety of mineral-based electron acceptors. A proteoliposome system containing a pool of internalized electron carriers was used to investigate how the topology of the MtrCAB complex relates to its ability to transport electrons across a lipid bilayer to externally located Fe(III) oxides. With MtrA facing the interior and MtrC exposed on the outer surface of the phospholipid bilayer, the established in vivo orientation, electron transfer from the interior electron carrier pool through MtrCAB to solid-phase Fe(III) oxides was demonstrated. The rates were 10(3) times higher than those reported for reduction of goethite, hematite, and lepidocrocite by S. oneidensis, and the order of the reaction rates was consistent with those observed in S. oneidensis cultures. In contrast, established rates for single turnover reactions between purified MtrC and Fe(III) oxides were 10(3) times lower. By providing a continuous flow of electrons, the proteoliposome experiments demonstrate that conduction through MtrCAB directly to Fe(III) oxides is sufficient to support in vivo, anaerobic, solid-phase iron respiration.
C1 [White, Gaye F.; Butt, Julea N.; Richardson, David J.; Clarke, Thomas A.] Univ E Anglia, Sch Biol Sci, Ctr Mol & Struct Biochem, Norwich NR4 7TJ, Norfolk, England.
   [White, Gaye F.; Butt, Julea N.; Richardson, David J.; Clarke, Thomas A.] Univ E Anglia, Sch Chem, Norwich NR4 7TJ, Norfolk, England.
   [Shi, Zhi; Shi, Liang; Wang, Zheming; Dohnalkova, Alice C.; Marshall, Matthew J.; Fredrickson, James K.; Zachara, John M.] Pacific NW Natl Lab, Richland, WA 99352 USA.
RP Richardson, DJ (reprint author), Univ E Anglia, Sch Biol Sci, Ctr Mol & Struct Biochem, Norwich NR4 7TJ, Norfolk, England.
EM d.richardson@uea.ac.uk; tom.clarke@uea.ac.uk
RI Wang, Zheming/E-8244-2010; clarke, tom/D-1837-2009; Richardson,
   David/E-2275-2011; Butt, Julea/E-2133-2011; 
OI Wang, Zheming/0000-0002-1986-4357; clarke, tom/0000-0002-6234-1914;
   Butt, Julea/0000-0002-9624-5226; Marshall, Matthew J/0000-0002-2402-8003
FU UK Biological and Biotechnological Sciences Research Council
   [BB/J013765, BB/H007288/1]; US Department of Energy, Office of
   Biological and Environmental Research (BER) through the Subsurface
   Biogeochemical Research (SBR) Program [Pacific Northwest National
   Laboratory (PNNL) Scientific Focus Area (SFA)]; Office of Basic Energy
   Sciences through the Geosciences Research Program; BER
FX We are grateful for experimental assistance from Dr. G. Saalbach (John
   Innes Centre proteomics facility) and Mr. L. Booty. The authors would
   like to acknowledge funding support from the UK Biological and
   Biotechnological Sciences Research Council (BB/J013765 and
   BB/H007288/1), and the US Department of Energy, Office of Biological and
   Environmental Research (BER) through the Subsurface Biogeochemical
   Research (SBR) Program [Pacific Northwest National Laboratory (PNNL)
   Scientific Focus Area (SFA)], and the Office of Basic Energy Sciences
   through the Geosciences Research Program. A portion of the experiments
   were performed at the Environmental Molecular Sciences Laboratory
   (EMSL), a national scientific user facility sponsored by the BER and
   located at PNNL. PNNL is operated for the Department of Energy by
   Battelle. D.J.R. is a Royal Society Wolfson Foundation Merit Award
   holder and T.A.C. is a Research Councils UK Fellow.
NR 32
TC 50
Z9 53
U1 15
U2 126
PU NATL ACAD SCIENCES
PI WASHINGTON
PA 2101 CONSTITUTION AVE NW, WASHINGTON, DC 20418 USA
SN 0027-8424
J9 P NATL ACAD SCI USA
JI Proc. Natl. Acad. Sci. U. S. A.
PD APR 16
PY 2013
VL 110
IS 16
BP 6346
EP 6351
DI 10.1073/pnas.1220074110
PG 6
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA 132BA
UT WOS:000318041500033
PM 23538304
ER

PT J
AU Tien, J
   Lee, HY
   Minor, DL
   Jan, YN
   Jan, LY
AF Tien, Jason
   Lee, Hye Young
   Minor, Daniel L., Jr.
   Jan, Yuh Nung
   Jan, Lily Yeh
TI Identification of a dimerization domain in the TMEM16A calcium-activated
   chloride channel (CaCC)
SO PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF
   AMERICA
LA English
DT Article
ID SHAKER POTASSIUM CHANNEL; OLIGOMERIZATION COMPATIBILITY; TETRAMERIZATION
   DOMAIN; PROTEIN; SUBUNIT; RECEPTOR
AB Transmembrane proteins with unknown function 16 (TMEM16A) is a calcium-activated chloride channel (CaCC) important for neuronal, exocrine, and smooth muscle functions. TMEM16A belongs to a family of integral membrane proteins that includes another CaCC, TMEM16B, responsible for controlling action potential waveform and synaptic efficacy, and a small-conductance calcium-activated nonselective cation channel, TMEM16F, linked to Scott syndrome. We find that these channels in the TMEM16 family share a homodimeric architecture facilitated by their cytoplasmic N termini. This dimerization domain is important for channel assembly in eukaryotic cells, and the in vitro association of peptides containing the dimerization domain is consistent with a homotypic protein-protein interaction. Amino acid substitutions in the dimerization domain affect functional TMEM16A-CaCC channel expression, as expected from its critical role in channel subunit assembly.
C1 [Tien, Jason; Lee, Hye Young; Jan, Yuh Nung; Jan, Lily Yeh] Univ Calif San Francisco, Dept Physiol, San Francisco, CA 94158 USA.
   [Minor, Daniel L., Jr.; Jan, Yuh Nung; Jan, Lily Yeh] Univ Calif San Francisco, Dept Biochem & Biophys, San Francisco, CA 94158 USA.
   [Jan, Yuh Nung; Jan, Lily Yeh] Univ Calif San Francisco, Howard Hughes Med Inst, San Francisco, CA 94158 USA.
   [Minor, Daniel L., Jr.] Univ Calif San Francisco, Cardiovasc Res Inst, Dept Cellular & Mol Pharmacol, San Francisco, CA 94158 USA.
   [Minor, Daniel L., Jr.] Univ Calif San Francisco, Calif Inst Quantitat Biomed Res, San Francisco, CA 94158 USA.
   [Minor, Daniel L., Jr.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Phys Biosci Div, Berkeley, CA 94720 USA.
RP Jan, LY (reprint author), Univ Calif San Francisco, Dept Physiol, San Francisco, CA 94158 USA.
EM Lily.Jan@ucsf.edu
FU National Institutes of Health [NS069229, DC007664]; American Asthma
   Foundation [09-0051]
FX We thank Dr. Sung Ho Ryu and Dr. Jae Yoon Kim of Pohang University of
   Science and Technology (POSTECH), Pohang, Korea for GST-tagged protein
   purification protocols. This work was supported by the National
   Institutes of Health Grants NS069229 (to L.Y.J.) and DC007664 (to
   D.L.M.), and the American Asthma Foundation 09-0051 (to D.L.M.). L.Y.J.
   and Y.N.J. are investigators of the Howard Hughes Medical Institute.
NR 32
TC 35
Z9 36
U1 2
U2 8
PU NATL ACAD SCIENCES
PI WASHINGTON
PA 2101 CONSTITUTION AVE NW, WASHINGTON, DC 20418 USA
SN 0027-8424
J9 P NATL ACAD SCI USA
JI Proc. Natl. Acad. Sci. U. S. A.
PD APR 16
PY 2013
VL 110
IS 16
BP 6352
EP 6357
DI 10.1073/pnas.1303672110
PG 6
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA 132BA
UT WOS:000318041500034
PM 23576756
ER

EF