FN Thomson Reuters Web of Science™
VR 1.0
PT J
AU Aragona, C
McSwain, MV
Grundstrom, ED
Marsh, AN
Roettenbacher, RM
Hessler, KM
Boyajian, TS
Ray, PS
AF Aragona, Christina
McSwain, M. Virginia
Grundstrom, Erika D.
Marsh, Amber N.
Roettenbacher, Rachael M.
Hessler, Katelyn M.
Boyajian, Tabetha S.
Ray, Paul S.
TI THE ORBITS OF THE gamma-RAY BINARIES LS I+61 303 AND LS 5039
SO ASTROPHYSICAL JOURNAL
LA English
DT Article
DE binaries: spectroscopic; stars: individual (LS 5039, LS I+61 303)
ID MICROQUASAR LS-I+61-303; BLACK-HOLE; LS-5039; EMISSION; DISCOVERY;
SPECTRUM; HESS
AB LS I +61 303 and LS 5039 are two of only a handful of known high-mass X-ray binaries (HMXBs) that exhibit very high energy emission in the MeV-TeV range, and these "gamma-ray binaries" are of renewed interest due to the recent launch of the Fermi Gamma-ray Space Telescope. Here we present new radial velocities of both systems based on recent red and blue optical spectra. Both systems have somewhat discrepant orbital solutions available in the literature, and our new measurements result in improved orbital elements and resolve the disagreements. The improved geometry of each orbit will aid in studies of the high-energy emission region near each source.
C1 [Aragona, Christina; McSwain, M. Virginia] Lehigh Univ, Dept Phys, Bethlehem, PA 18015 USA.
[Grundstrom, Erika D.] Vanderbilt Univ, Dept Phys & Astron, Nashville, TN 37235 USA.
[Marsh, Amber N.; Roettenbacher, Rachael M.; Hessler, Katelyn M.] Lehigh Univ, Dept Phys, Bethlehem, PA 18015 USA.
[Boyajian, Tabetha S.] Georgia State Univ, Ctr High Angular Resolut Astron, Atlanta, GA 30303 USA.
[Boyajian, Tabetha S.] Georgia State Univ, Dept Phys & Astron, Atlanta, GA 30303 USA.
[Ray, Paul S.] USN, Res Lab, Div Space Sci, Washington, DC 20375 USA.
RP Aragona, C (reprint author), Lehigh Univ, Dept Phys, 16 Mem Dr E, Bethlehem, PA 18015 USA.
EM cha206@lehigh.edu; mcswain@lehigh.edu; erika.grundstrom@vanderbilt.edu;
anm506@lehigh.edu; rmr207@lehigh.edu; kmh410@lehigh.edu;
boyajian@chara.gsu.edu; paul.ray@nrl.navy.mil
OI Grundstrom, Erika/0000-0002-5130-0260
FU NASA DPR [NNX08AV70G, NNX08AX79G, NNG08E1671]; Lehigh University
FX We gratefully acknowledge the anonymous referee for helpful comments
about this manuscript as well as Jorge Casares for sharing his radial
velocity measurements of LS 5039. We also thank Di Harmer and the staff
at KPNO, as well as Fred Walter and the SMARTS service observers, for
their hard work to schedule and support these observations. This work is
supported by NASA DPR numbers NNX08AV70G, NNX08AX79G, and NNG08E1671 and
an institutional grant from Lehigh University.
NR 32
TC 66
Z9 66
U1 0
U2 3
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 JUN 10
PY 2009
VL 698
IS 1
BP 514
EP 518
DI 10.1088/0004-637X/698/1/514
PG 5
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 450AP
UT WOS:000266373700041
ER
PT J
AU Colaninno, RC
Vourlidas, A
AF Colaninno, Robin C.
Vourlidas, Angelos
TI FIRST DETERMINATION OF THE TRUE MASS OF CORONAL MASS EJECTIONS: A NOVEL
APPROACH TO USING THE TWO STEREO VIEWPOINTS
SO ASTROPHYSICAL JOURNAL
LA English
DT Article
DE methods: data analysis; Sun: coronal mass ejections (CMEs); techniques:
image processing
AB The twin Sun Earth Connection Coronal and Heliospheric Investigation (SECCHI) COR2 coronagraphs of the Solar Terrestrial Relations Observatory (STEREO) provide images of the solar corona from two viewpoints in the solar system. Since their launch in late 2006, the STEREO Ahead (A) and Behind (B) spacecraft have been slowly separating from Earth at a rate of 22 degrees.5 per year. By the end of 2007, the two spacecraft were separated by more than 40 degrees from each other. At that time, we began to see large-scale differences in the morphology and total intensity between coronal mass ejections (CMEs) observed with SECCHI-COR2 on STEREO-A and B. Due to the effects of the Thomson scattering geometry, the intensity of an observed CME is dependent on the angle it makes with the observed plane of the sky. From the intensity images, we can calculate the integrated line-of-sight electron density and mass. We demonstrate that it is possible to simultaneously derive the direction and true total mass of the CME if we make the simple assumption that the same mass should be observed in COR2-A and B.
C1 [Colaninno, Robin C.] George Mason Univ, Fairfax, VA 22030 USA.
[Vourlidas, Angelos] USN, Res Lab, Washington, DC 20375 USA.
RP Colaninno, RC (reprint author), George Mason Univ, Fairfax, VA 22030 USA.
EM robin.colaninno@nrl.navy.mil; vourlidas@nrl.navy.mil
RI Vourlidas, Angelos/C-8231-2009
OI Vourlidas, Angelos/0000-0002-8164-5948
NR 19
TC 61
Z9 62
U1 0
U2 5
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 JUN 10
PY 2009
VL 698
IS 1
BP 852
EP 858
DI 10.1088/0004-637X/698/1/852
PG 7
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 450AP
UT WOS:000266373700072
ER
PT J
AU Liu, Y
Luhmann, JG
Lin, RP
Bale, SD
Vourlidas, A
Petrie, GJD
AF Liu, Ying
Luhmann, Janet G.
Lin, Robert P.
Bale, Stuart D.
Vourlidas, Angelos
Petrie, Gordon J. D.
TI CORONAL MASS EJECTIONS AND GLOBAL CORONAL MAGNETIC FIELD RECONFIGURATION
SO ASTROPHYSICAL JOURNAL LETTERS
LA English
DT Article
DE Sun: corona; Sun: coronal mass ejections (CMEs); Sun: magnetic fields
ID SOLAR CORONA; CURRENT SHEET; STREAMER; EVOLUTION; MODELS
AB We investigate the role of coronal mass ejections (CMEs) in the global coronal magnetic field reconfiguration, a debate that has lasted for about two decades. Key evidence of the coronal field restructuring during the 2007 December 31 CME is provided by combining imaging observations from widely separated spacecraft with the potential-field source-surface (PFSS) model, thanks to the extraordinarily quiet Sun at the present solar minimum. The helmet streamer, previously disrupted by the CME, re-forms but is displaced southward permanently; the preexisting heliospheric plasma sheet (HPS) is also disrupted as evidenced by the concave-outward shape of the CME. The south polar coronal hole shrinks considerably. Plasma blobs moving outward along the newly formed HPS suggest the occurrence of magnetic reconnection between the fields blown open by the CME and the ambient adjacent open fields. A streamer-like structure is also observed in the wake of the CME and interpreted as a plasma sheet where the thin post-CME current sheet is embedded. These results are important for understanding the coronal field evolution over a solar cycle as well as the complete picture of CME initiation and propagation.
C1 [Liu, Ying; Luhmann, Janet G.; Lin, Robert P.; Bale, Stuart D.] Univ Calif Berkeley, Space Sci Lab, Berkeley, CA 94720 USA.
[Vourlidas, Angelos] USN, Res Lab, Div Space Sci, Washington, DC 20375 USA.
[Petrie, Gordon J. D.] Natl Solar Observ, Tucson, AZ 85719 USA.
RP Liu, Y (reprint author), Univ Calif Berkeley, Space Sci Lab, Berkeley, CA 94720 USA.
EM liuxying@ssl.berkeley.edu
RI Vourlidas, Angelos/C-8231-2009; Bale, Stuart/E-7533-2011;
OI Vourlidas, Angelos/0000-0002-8164-5948; Bale,
Stuart/0000-0002-1989-3596; Petrie, Gordon/0000-0001-8462-9161; Liu,
Ying/0000-0002-3483-5909
FU STEREO project [NAS5-03131]; NNSFC [40621003]
FX The research was supported by the STEREO project under grant NAS5-03131.
We acknowledge the use of GONG data. Y. Liu thanks H. S. Hudson for
helpful discussion. This work was also supported in part by grant NNSFC
40621003.
NR 29
TC 19
Z9 20
U1 0
U2 1
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 2041-8205
EI 2041-8213
J9 ASTROPHYS J LETT
JI Astrophys. J. Lett.
PD JUN 10
PY 2009
VL 698
IS 1
BP L51
EP L55
DI 10.1088/0004-637X/698/1/L51
PG 5
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 450AO
UT WOS:000266373600012
ER
PT J
AU Tripathi, D
Kliem, B
Mason, HE
Young, PR
Green, LM
AF Tripathi, Durgesh
Kliem, Bernhard
Mason, Helen E.
Young, Peter R.
Green, Lucie M.
TI TEMPERATURE TOMOGRAPHY OF A CORONAL SIGMOID SUPPORTING THE GRADUAL
FORMATION OF A FLUX ROPE
SO ASTROPHYSICAL JOURNAL LETTERS
LA English
DT Article
DE Sun: activity; Sun: corona; Sun: magnetic fields
ID MAGNETIC-FLUX; MASS EJECTION; DRIVEN EVOLUTION; SOLAR-ACTIVITY;
ERUPTION; HINODE; INITIATION; FIELDS; PROMINENCES; FILAMENTS
AB Multiwavelength observations of a sigmoidal (S-shaped) solar coronal source by the EUV Imaging Spectrometer and the X-Ray Telescope aboard the Hinode spacecraft and by the EUV Imager aboard STEREO are reported. The data reveal the coexistence of a pair of J-shaped hot arcs at temperatures T > 2 MK with an S-shaped structure at somewhat lower temperatures (T approximate to 1-1.3 MK). The middle section of the S-shaped structure runs along the polarity inversion line of the photospheric field, bridging the gap between the arcs. Flux cancellation occurs at the same location in the photosphere. The sigmoid forms in the gradual decay phase of the active region, which does not experience an eruption. These findings correspond to the expected signatures of a flux rope forming, or being augmented, gradually by a topology transformation inside a magnetic arcade. In such a transformation, the plasma on newly formed helical field lines in the outer flux shell of the rope (S-shaped in projection) is expected to enter a cooling phase once the reconnection of their parent field line pairs (double-J shaped in projection) is complete. Thus, the data support the conjecture that flux ropes can exist in the corona prior to eruptive activity.
C1 [Tripathi, Durgesh; Mason, Helen E.] Univ Cambridge, DAMTP, Cambridge CB3 0WA, England.
[Kliem, Bernhard; Green, Lucie M.] Univ Coll London, Mullard Space Sci Lab, Dorking RH5 6NT, Surrey, England.
[Kliem, Bernhard; Young, Peter R.] USN, Res Lab, Div Space Sci, Washington, DC 20375 USA.
[Kliem, Bernhard] Univ Potsdam, Inst Phys & Astron, D-14482 Potsdam, Germany.
[Young, Peter R.] George Mason Univ, Fairfax, VA 22030 USA.
RP Tripathi, D (reprint author), Univ Cambridge, DAMTP, Wilberforce Rd, Cambridge CB3 0WA, England.
EM D.TRIPATHI@damtp.cam.ac.uk
RI Tripathi, Durgesh/D-9390-2012
OI Tripathi, Durgesh/0000-0003-1689-6254
FU STFC Rolling Grants; NASA [NNH06AD58I]
FX We thank the referee and S. Patsourakos for very constructive comments.
Hinode is a Japanese mission developed and launched by ISAS/JAXA, with
NAOJ as domestic partner and NASA and STFC (UK) as international
partners. It is operated by these agencies in cooperation with ESA and
NSC (Norway). This work was supported by STFC Rolling Grants and by NASA
grant NNH06AD58I.
NR 33
TC 25
Z9 25
U1 0
U2 2
PU IOP PUBLISHING LTD
PI BRISTOL
PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND
J9 ASTROPHYS J LETT
JI Astrophys. J. Lett.
PD JUN 10
PY 2009
VL 698
IS 1
BP L27
EP L32
DI 10.1088/0004-637X/698/1/L27
PG 6
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 450AO
UT WOS:000266373600007
ER
PT J
AU Garcia-Infanta, JM
Swaminathan, S
Cepeda-Jimenez, CM
McNelley, TR
Ruano, OA
Carreno, F
AF Garcia-Infanta, J. M.
Swaminathan, S.
Cepeda-Jimenez, C. M.
McNelley, T. R.
Ruano, O. A.
Carreno, F.
TI Enhanced grain refinement due to deformation-induced precipitation
during ambient-temperature severe plastic deformation of an Al-7%Si
alloy
SO JOURNAL OF ALLOYS AND COMPOUNDS
LA English
DT Article
DE Equal channel angular pressing (ECAP); Al-Si alloys; Severe plastic
deformation; Deformation induced precipitation; Grain refinement
ID HIGH-PRESSURE TORSION; SI ALLOY; EVOLUTION; ALUMINUM; MICROSTRUCTURE;
STRAIN
AB An Al-7wt%Si alloy was prepared by casting. Billets from the as-cast ingot were annealed at 540 degrees C and then either quenched or furnace cooled to control the Si concentration in the primary Al constituent. Subsequently, as-cast billets as well as billets in the annealed conditions were subjected to ambient temperature severe plastic deformation (SPD) by equal-channel angular pressing (ECAP). Microstructures were evaluated by optical. scanning electron, and transmission electron microscopy methods and Vickers hardness data were also acquired. Grain refinement and hardening in the primary Al by ambient temperature ECAP processing are influenced by deformation-induced precipitation of Si from a supersaturated solid solution. The finest grain size and highest hardness are associated with the greatest initial supersaturation of Si. (C) 2008 Elsevier B.V. All rights reserved.
C1 [Garcia-Infanta, J. M.; Cepeda-Jimenez, C. M.; Ruano, O. A.; Carreno, F.] CSIC, Dept Met Phys, Ctr Nacl Invest Met CENIM, Madrid 28040, Spain.
[Swaminathan, S.; McNelley, T. R.] USN, Postgrad Sch, Dept Mech & Astronaut Engn, Monterey, CA 93943 USA.
RP Garcia-Infanta, JM (reprint author), CSIC, Dept Met Phys, Ctr Nacl Invest Met CENIM, Av Gregorio Amo 8, Madrid 28040, Spain.
EM jmgi@cenim.csic.es
RI Carreno, Fernando/F-6141-2011; Ruano, Oscar/H-1835-2015
OI Carreno, Fernando/0000-0003-0754-2518; Ruano, Oscar/0000-0001-6368-986X
FU CICYT under program [MAT2003/01172]; Spanish Ministry of Education and
Science for providing a FPI [BES-2004-4865]; Spanish National Research
Council (CSIC) [I3P]; U.S. Air Force Office of Scientific Research
[F1ATA06058G001]; U.S. National Research Council Fellowship
FX The authors acknowledge financial support from CICYT under program
MAT2003/01172. J.M.G.-I. would like to express his thanks to the Spanish
Ministry of Education and Science for providing a FPI fellowship number
BES-2004-4865, and travel expenses. C.M.C.-J. would like to express her
thanks to the Spanish National Research Council (CSIC) for a I3P
contract. T.R.M. and S.S. acknowledge partial support for this work by
the U.S. Air Force Office of Scientific Research under funding document
no. F1ATA06058G001 S.S. acknowledges a U.S. National Research Council
Fellowship.
NR 20
TC 19
Z9 19
U1 1
U2 11
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 JUN 10
PY 2009
VL 478
IS 1-2
BP 139
EP 143
DI 10.1016/j.jallcom.2008.11.047
PG 5
WC Chemistry, Physical; Materials Science, Multidisciplinary; Metallurgy &
Metallurgical Engineering
SC Chemistry; Materials Science; Metallurgy & Metallurgical Engineering
GA 455SS
UT WOS:000266786400035
ER
PT J
AU Drazen, DA
Melville, WK
AF Drazen, David A.
Melville, W. Kendall
TI Turbulence and mixing in unsteady breaking surface waves
SO JOURNAL OF FLUID MECHANICS
LA English
DT Article
ID OCEANIC BOUNDARY-LAYER; DEEP-WATER; VELOCITY-FIELD; COASTAL OCEAN;
DISSIPATION; BREAKERS; SIMULATION; HYDROFOIL
AB Laboratory measurements of the post-breaking velocity field due to unsteady deep-water breaking are presented. Digital particle image velocimetry (DPIV) is used to measure the entire post-breaking turbulent cloud with high-resolution imagery permitting the measurement of scales from O(1 m) down to O(1 mm). Ensemble-averaged quantities including mean Velocity, turbulent kinetic energy (TKE) density and Reynolds stress are presented and compare Favourably with the results of Melville, Veron & White (J. Fluid Mech., vol. 454, 2002, pp. 203-233; MVW). However, due to limited resolution, MVW's measurements were not spatially coherent across the turbulent cloud, and this restricted their ability to compute turbulent wavenumber spectra. Statistical spatial quantities including the integral length scale L-11, Taylor microscale lambda(f) and the Taylor microscale Reynolds number Re-lambda, are presented. Estimation of an eddy viscosity for the breaking event is also given based on analysis of the image data. Turbulent wavenumber spectra are computed and within 12 wave periods after breaking exhibit what have been termed 'spectral bumps' in the turbulence literature. These local maxima in the spectra are thought to be caused by an imbalance between the transport of energy from large scales and the dissipation at small scales. Estimates of the dissipation rate per unit mass are Computed using both direct and indirect methods. Horizontally averaged terms in the TKE budget are also presented up to 27 wave periods after breaking and are discussed with regard to the dynamics of the post-breaking flow. Comparisons of the TKE density in the streamwise and cross-stream planes with the three-dimensional full TKE density are given in an appendix.
C1 [Drazen, David A.; Melville, W. Kendall] Univ Calif San Diego, Scripps Inst Oceanog, La Jolla, CA 92093 USA.
RP Drazen, DA (reprint author), USN, Ctr Surface Warfare, Carderock Div, 9500 MacArthur Blvd, Bethesda, MD 20817 USA.
EM david.drazen@navy.mil
RI Hang, Chen/H-5336-2011
NR 38
TC 21
Z9 21
U1 1
U2 17
PU CAMBRIDGE UNIV PRESS
PI NEW YORK
PA 32 AVENUE OF THE AMERICAS, NEW YORK, NY 10013-2473 USA
SN 0022-1120
EI 1469-7645
J9 J FLUID MECH
JI J. Fluid Mech.
PD JUN 10
PY 2009
VL 628
BP 85
EP 119
DI 10.1017/S0022112009006120
PG 35
WC Mechanics; Physics, Fluids & Plasmas
SC Mechanics; Physics
GA 470QV
UT WOS:000267995000005
ER
PT J
AU Berti, L
Medintz, IL
Alessandrini, A
Facci, P
AF Berti, Lorenzo
Medintz, Igor L.
Alessandrini, Andrea
Facci, Paolo
TI A one-pot functionalization strategy for immobilizing proteins onto
linear dsDNA scaffolds
SO NANOTECHNOLOGY
LA English
DT Article
ID YEAST ISO-1-CYTOCHROME-C; BUILDING-BLOCKS; DNA; ARRAYS; NANOSTRUCTURES;
NANOWIRES
AB Functional DNA scaffolds can be defined as DNA-based structures comprising chemical moieties facilitating and guiding the immobilization of additional nanocomponents. Due to the limited reactivity of DNA there is currently a need to develop rapid routes to expand its chemical repertoire and increase its versatility as a nanostructuring scaffold. We report a simple synthetic strategy for generating linear and stable double-stranded DNA scaffolds functionalized with multiple sites reactive towards free thiols, and the utility of this approach is demonstrated by immobilizing a model protein containing an accessible free thiol. This procedure is very versatile and could be easily expanded to other types of chemistries. This approach could also potentially be employed for the specific, oriented immobilization of various biomolecules and nanoparticles on predefined DNA architectures.
C1 [Berti, Lorenzo] Univ Calif Davis, Ctr Canc, Dept Internal Med, Div Hematol & Oncol, Sacramento, CA 95817 USA.
[Medintz, Igor L.] USN, Res Lab Code 6900, Ctr Biomol Sci & Engn, Washington, DC 20375 USA.
[Alessandrini, Andrea] Univ Modena & Reggio Emilia, Dept Phys, I-41100 Modena, Italy.
[Alessandrini, Andrea; Facci, Paolo] Natl Res Ctr NanoStruct & BioSyst Surfaces S3, CNR, INFM, I-41100 Modena, Italy.
RP Berti, L (reprint author), Univ Calif Davis, Ctr Canc, Dept Internal Med, Div Hematol & Oncol, 4501 X St, Sacramento, CA 95817 USA.
EM lberti@ucdavis.edu
RI Alessandrini, Andrea/O-1336-2016
OI Alessandrini, Andrea/0000-0002-4782-2365
FU S&T Division (DTRA); ONR; NRL; NRL-NSI
FX IM acknowledges the CB Directorate/Physical S&T Division (DTRA), ONR,
NRL and the NRL-NSI for financial support.
NR 26
TC 1
Z9 1
U1 0
U2 7
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0957-4484
EI 1361-6528
J9 NANOTECHNOLOGY
JI Nanotechnology
PD JUN 10
PY 2009
VL 20
IS 23
AR 235101
DI 10.1088/0957-4484/20/23/235101
PG 6
WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary;
Physics, Applied
SC Science & Technology - Other Topics; Materials Science; Physics
GA 447VJ
UT WOS:000266219800001
PM 19448298
ER
PT J
AU Hsieh, WC
Nenes, A
Flagan, RC
Seinfeld, JH
Buzorius, G
Jonsson, H
AF Hsieh, W. C.
Nenes, A.
Flagan, R. C.
Seinfeld, J. H.
Buzorius, G.
Jonsson, H.
TI Parameterization of cloud droplet size distributions: Comparison with
parcel models and observations
SO JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
LA English
DT Article
ID SPECTRAL DISPERSION; STRATOCUMULUS CLOUDS; EFFECTIVE RADIUS; PART II;
AEROSOL; CONDENSATION; SENSITIVITY; CUMULUS; ALBEDO; ENTRAINMENT
AB This work examines the efficacy of various physically based approaches derived from one-dimensional adiabatic parcel model frameworks (a numerical model and a simplified parameterization) to parameterize the cloud droplet distribution characteristics for computing cloud effective radius and autoconversion rate in regional/global atmospheric models. Evaluations are carried out for integrations with single (average) and distributions of updraft velocity, assuming that (1) conditions at s(max) are reflective of the cloud column or (2) cloud properties vary vertically, in agreement with one-dimensional parcel theory. The predicted droplet distributions are then compared against in situ cloud droplet observations obtained during the CRYSTAL-FACE and CSTRIPE missions. Good agreement of droplet relative dispersion between parcel model frameworks indicates that the parameterized parcel model essentially captures one-dimensional dynamics; the predicted distributions are overly narrow, with relative dispersion being a factor of 2 lower than observations. However, if conditions at cloud maximum supersaturation are used to predict relative dispersion and applied throughout the cloud column, better agreement is seen with observations, especially if integrations are carried out over the distribution of updraft velocity. When considering the efficiency of the method, calculating cloud droplet spectral dispersion at smax is preferred for linking aerosol with droplet distributions in large-scale models.
C1 [Hsieh, W. C.; Nenes, A.] Georgia Inst Technol, Sch Earth & Atmospher Sci, Atlanta, GA 30332 USA.
[Nenes, A.] Georgia Inst Technol, Sch Chem & Biomol Engn, Atlanta, GA 30332 USA.
[Flagan, R. C.; Seinfeld, J. H.] CALTECH, Pasadena, CA 91125 USA.
[Flagan, R. C.; Seinfeld, J. H.] CALTECH, Dept Chem Engn, Pasadena, CA 91125 USA.
[Buzorius, G.] USN, Postgrad Sch, Dept Meteorol, Grad Sch Engn & Appl Sci, Monterey, CA 93943 USA.
[Jonsson, H.] USN, Postgrad Sch, Ctr Interdisciplinary Remotely Piloted Aircraft S, Monterey, CA USA.
RP Hsieh, WC (reprint author), Georgia Inst Technol, Sch Earth & Atmospher Sci, 331 Ferst Dr, Atlanta, GA 30332 USA.
EM nenes@eas.gatech.edu
FU Naval Research [N00014-04-1-0118]
FX This research was funded by the Department of Energy, an NSF CAREER
award, a NASA New Investigator Award, and a graduate teaching
assistantship from the School of Earth and Atmospheric Science at
Georgia Institute of Technology. This work was also funded by the office
of Naval Research under grant N00014-04-1-0118. We also thank three
anonymous reviewers for comments that improved the article.
NR 46
TC 13
Z9 13
U1 0
U2 7
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 2169-897X
J9 J GEOPHYS RES-ATMOS
JI J. Geophys. Res.-Atmos.
PD JUN 9
PY 2009
VL 114
AR D11205
DI 10.1029/2008JD011387
PG 11
WC Meteorology & Atmospheric Sciences
SC Meteorology & Atmospheric Sciences
GA 458FS
UT WOS:000267001300003
ER
PT J
AU Parker, D
Mazin, II
AF Parker, D.
Mazin, I. I.
TI Possible Phase-Sensitive Tests of Pairing Symmetry in Pnictide
Superconductors
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID STATE
AB The discovery of the new class of pnictide superconductors has engendered a controversy about their pairing symmetry, with proposals ranging from an extended s wave or "s(+/-)" symmetry to nodal or nodeless d-wave symmetry to still more exotic order parameters such as p wave. In this Letter, building on the earlier, similar work performed for the cuprates, we propose several phase-sensitive Josephson interferometry experiments, each of which may allow resolution of the issue.
C1 [Parker, D.; Mazin, I. I.] USN, Res Lab, Washington, DC 20375 USA.
RP Parker, D (reprint author), USN, Res Lab, 4555 Overlook Ave SW, Washington, DC 20375 USA.
RI Mazin, Igor/B-6576-2008
NR 17
TC 50
Z9 49
U1 2
U2 10
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 JUN 5
PY 2009
VL 102
IS 22
AR 227007
DI 10.1103/PhysRevLett.102.227007
PG 4
WC Physics, Multidisciplinary
SC Physics
GA 454MF
UT WOS:000266685400052
PM 19658896
ER
PT J
AU Simpkins, BS
Mastro, MA
Eddy, CR
Pehrsson, PE
AF Simpkins, B. S.
Mastro, M. A.
Eddy, C. R., Jr.
Pehrsson, P. E.
TI Surface-Induced Transients in Gallium Nitride Nanowires
SO JOURNAL OF PHYSICAL CHEMISTRY C
LA English
DT Article
ID FIELD-EFFECT TRANSISTORS; GAN-NANOWIRES; ELECTRICAL-PROPERTIES; DEEP
LEVELS; PHOTOCONDUCTIVITY; PERFORMANCE; ELECTRONICS; STATES; FILMS
AB Traps responsible for gate-induced current transients and rate-dependent transport properties in gallium nitride nanowire field-effect transistors have been investigated. Our results suggest these traps are acceptor states located similar to 0.85 eV above the valence band and are at or near the nanowire surface. Deposition of a 40 nm SiN(x) passivation layer reduces trap density by a factor of similar to 4 resulting in a lower limit estimate of surface state density of 1.2 x 10(11) cm(-2)/eV.
C1 [Simpkins, B. S.; Pehrsson, P. E.] USN, Res Lab, Div Chem, Washington, DC 20375 USA.
RP Simpkins, BS (reprint author), USN, Res Lab, Div Chem, Washington, DC 20375 USA.
EM blake.simpkins@nrl.navy.mil
FU Office of Naval Research
FX The authors would like to thank Dr. J. P. Long and Dr. J. C. Owrutsky
for assistance in configuring and characterizing the monochromatic
illumination source and also acknowledge the financial support of the
Office of Naval Research.
NR 39
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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 JUN 4
PY 2009
VL 113
IS 22
BP 9480
EP 9485
DI 10.1021/jp901122k
PG 6
WC Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science,
Multidisciplinary
SC Chemistry; Science & Technology - Other Topics; Materials Science
GA 451CF
UT WOS:000266447600009
ER
PT J
AU Wang, XY
Ren, XF
Kahen, K
Hahn, MA
Rajeswaran, M
Maccagnano-Zacher, S
Silcox, J
Cragg, GE
Efros, AL
Krauss, TD
AF Wang, Xiaoyong
Ren, Xiaofan
Kahen, Keith
Hahn, Megan A.
Rajeswaran, Manju
Maccagnano-Zacher, Sara
Silcox, John
Cragg, George E.
Efros, Alexander L.
Krauss, Todd D.
TI Non-blinking semiconductor nanocrystals (Retracted article. See vol.
527, 2015)
SO NATURE
LA English
DT Article; Retracted Publication
ID SINGLE-QUANTUM-DOT; CADMIUM SELENIDE NANOCRYSTALS; FLUORESCENCE
INTERMITTENCY; SPECTROSCOPY; SUPPRESSION; EMISSION; DYNAMICS
AB The photoluminescence from a variety of individual molecules(1) and nanometre-sized crystallites(2) is defined by large intensity fluctuations, known as 'blinking', whereby their photoluminescence turns 'on' and 'off' intermittently, even under continuous photoexcitation(2). For semiconductor nanocrystals, it was originally proposed(3) that these 'off' periods corresponded to a nanocrystal with an extra charge. A charged nanocrystal could have its photoluminescence temporarily quenched owing to the high efficiency of non-radiative ( for example, Auger) recombination processes between the extra charge and a subsequently excited electron-hole pair; photoluminescence would resume only after the nanocrystal becomes neutralized again. Despite over a decade of research, completely non-blinking nanocrystals(4,5) have not been synthesized and an understanding of the blinking phenomenon(6) remains elusive. Here we report ternary core/shell CdZnSe/ZnSe semiconductor nanocrystals that individually exhibit continuous, non-blinking photoluminescence. Unexpectedly, these nanocrystals strongly photoluminesce despite being charged, as indicated by a multi-peaked photoluminescence spectral shape and short lifetime. To model the unusual photoluminescence properties of the CdZnSe/ZnSe nanocrystals, we softened the abrupt confinement potential of a typical core/shell nanocrystal, suggesting that the structure is a radially graded alloy of CdZnSe into ZnSe. As photoluminescence blinking severely limits the usefulness of nanocrystals in applications requiring a continuous output of single photons, these non-blinking nanocrystals may enable substantial advances in fields ranging from single-molecule biological labelling(7) to low-threshold lasers(8).
C1 [Wang, Xiaoyong; Hahn, Megan A.; Krauss, Todd D.] Univ Rochester, Dept Chem, Rochester, NY 14627 USA.
[Krauss, Todd D.] Univ Rochester, Inst Opt, Rochester, NY 14627 USA.
[Ren, Xiaofan; Kahen, Keith; Rajeswaran, Manju] Eastman Kodak Co, Rochester, NY 14650 USA.
[Maccagnano-Zacher, Sara; Silcox, John] Cornell Univ, Sch Appl & Engn Phys, Ithaca, NY 14583 USA.
[Cragg, George E.; Efros, Alexander L.] USN, Res Lab, Washington, DC 20375 USA.
RP Krauss, TD (reprint author), Univ Rochester, Dept Chem, Rochester, NY 14627 USA.
EM keith.kahen@kodak.com; efros@dave.nrl.navy.mil;
krauss@chem.rochester.edu
RI Wang, Xiaoyong/D-5956-2012; Wang, Xiaoyong/F-9542-2012
FU DOE [DE-FC26-06NT42864]; NSF [CHE 0616378, CHE 0619418, EEC-0117770,
DMR-9632275]; NYSTAR; University of Rochester Center for Electronic
Imaging Systems; Cornell Center for Nanoscale Systems; Office of Naval
Research; Alexander von Humboldt Foundation
FX We acknowledge financial support by the DOE (DE-FC26-06NT42864), NSF
(CHE 0616378, CHE 0619418, EEC-0117770, DMR-9632275), NYSTAR, University
of Rochester Center for Electronic Imaging Systems, the Cornell Center
for Nanoscale Systems, the Office of Naval Research and the Alexander
von Humboldt Foundation ( A. L. E.).
NR 30
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U1 9
U2 272
PU NATURE PUBLISHING GROUP
PI LONDON
PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND
SN 0028-0836
EI 1476-4687
J9 NATURE
JI Nature
PD JUN 4
PY 2009
VL 459
IS 7247
BP 686
EP 689
DI 10.1038/nature08072
PG 4
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA 453KF
UT WOS:000266608600040
PM 19430463
ER
PT J
AU Eck, TF
Holben, BN
Reid, JS
Sinyuk, A
Hyer, EJ
O'Neill, NT
Shaw, GE
Castle, JRV
Chapin, FS
Dubovik, O
Smirnov, A
Vermote, E
Schafer, JS
Giles, D
Slutsker, I
Sorokine, M
Newcomb, WW
AF Eck, T. F.
Holben, B. N.
Reid, J. S.
Sinyuk, A.
Hyer, E. J.
O'Neill, N. T.
Shaw, G. E.
Castle, J. R. Vande
Chapin, F. S.
Dubovik, O.
Smirnov, A.
Vermote, E.
Schafer, J. S.
Giles, D.
Slutsker, I.
Sorokine, M.
Newcomb, W. W.
TI Optical properties of boreal region biomass burning aerosols in central
Alaska and seasonal variation of aerosol optical depth at an Arctic
coastal site
SO JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
LA English
DT Article
ID SKY RADIANCE MEASUREMENTS; SINGLE SCATTERING ALBEDO; WAVELENGTH
DEPENDENCE; PHYSICAL-PROPERTIES; ABSORPTION; PARTICLES; VARIABILITY;
AERONET; SMOKE; CAMPAIGN
AB Long-term monitoring of aerosol optical properties at a boreal forest AERONET site in interior Alaska was performed from 1994 through 2008 (excluding winter). Large interannual variability was observed, with some years showing near background aerosol optical depth (AOD) levels (<0.1 at 500 nm) while 2004 and 2005 had August monthly means similar in magnitude to peak months at major tropical biomass burning regions. Single scattering albedo (omega(0); 440 nm) at the boreal forest site ranged from similar to 0.91 to 0.99 with an average of similar to 0.96 for observations in 2004 and 2005. This suggests a significant amount of smoldering combustion of woody fuels and peat/soil layers that would result in relatively low black carbon mass fractions for smoke particles. The fine mode particle volume median radius during the heavy burning years was quite large, averaging similar to 0.17 mu m at AOD(440 nm) = 0.1 and increasing to similar to 0.25 mu m at AOD(440 nm) = 3.0. This large particle size for biomass burning aerosols results in a greater relative scattering component of extinction and, therefore, also contributes to higher omega(0). Additionally, monitoring at an Arctic Ocean coastal site (Barrow, Alaska) suggested transport of smoke to the Arctic in summer resulting in individual events with much higher AOD than that occurring during typical spring Arctic haze. However, the springtime mean AOD(500 nm) is higher during late March through late May (similar to 0.150) than during summer months (similar to 0.085) at Barrow partly due to very few days with low background AOD levels in spring compared with many days with clean background conditions in summer.
C1 [Eck, T. F.; Holben, B. N.; Sinyuk, A.; Smirnov, A.; Schafer, J. S.; Giles, D.; Slutsker, I.; Sorokine, M.; Newcomb, W. W.] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA.
[Eck, T. F.] Univ Maryland, Goddard Earth Sci & Technol Ctr, Baltimore, MD 21201 USA.
[Reid, J. S.; Hyer, E. J.] USN, Aerosol & Radiat Sect, Marine Meteorol Div, Res Lab, Monterey, CA 93943 USA.
[Sinyuk, A.; Smirnov, A.; Schafer, J. S.; Giles, D.; Slutsker, I.; Sorokine, M.; Newcomb, W. W.] Sci Syst & Applicat Inc, Lanham, MD USA.
[O'Neill, N. T.] Univ Sherbrooke, CARTEL, Dept Geomat Appl, Sherbrooke, PQ J1K 2R1, Canada.
[Shaw, G. E.] Univ Alaska, Inst Geophys, Fairbanks, AK 99775 USA.
[Castle, J. R. Vande] Univ New Mexico, Dept Biol, Albuquerque, NM 87131 USA.
[Chapin, F. S.] Univ Alaska, Inst Arct Biol, Fairbanks, AK 99775 USA.
[Dubovik, O.] Univ Lille, CNRS, Opt Atmospher Lab, Villeneuve Dascq, France.
[Vermote, E.] Univ Maryland, Dept Geog, College Pk, MD 20742 USA.
RP Eck, TF (reprint author), NASA, Goddard Space Flight Ctr, Code 614-4, Greenbelt, MD 20771 USA.
EM thomas.f.eck@nasa.gov
RI Smirnov, Alexander/C-2121-2009; Schafer, Joel/A-3978-2010; ECK,
THOMAS/D-7407-2012; Vermote, Eric/K-3733-2012; Dubovik,
Oleg/A-8235-2009; Reid, Jeffrey/B-7633-2014; Hyer, Edward/E-7734-2011;
OI Dubovik, Oleg/0000-0003-3482-6460; Reid, Jeffrey/0000-0002-5147-7955;
Hyer, Edward/0000-0001-8636-2026; Chapin III, F
Stuart/0000-0002-2558-9910
FU NASA EOS project office; Radiation Sciences Program, NASA Headquarters;
NASA Interdisciplinary Science Program; Office of Naval Research Code 32
FX This project was supported by Michael D. King, retired in 2008 from the
NASA EOS project office, and by Hal B. Maring, Radiation Sciences
Program, NASA Headquarters. We thank the site managers at the Bonanza
Creek site (currently Jamie Hollingsworth, University of Alaska
Fairbanks) and the Barrow site (currently Walter Brower and Jimmy
Ivanoff) for their diligence over the years in operating and maintaining
the AERONET instrumentation. Bernie Zak was the coordinator and Rick
Wagener was the principal investigator for the Barrow AERONET site. Drs.
Reid and Hyer's participation was funded by the NASA Interdisciplinary
Science Program and the Office of Naval Research Code 32. We also thank
the anonymous reviewers for comments that resulted in improvements in
the manuscript. This paper is dedicated to the memory of Wayne Newcomb
(1952-2008) of the NASA AERONET project, whose ability to keep AERONET
sites working through his combination of extensive knowledge, timely
communication, and good humor will never be forgotten.
NR 55
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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 JUN 2
PY 2009
VL 114
AR D11201
DI 10.1029/2008JD010870
PG 14
WC Meteorology & Atmospheric Sciences
SC Meteorology & Atmospheric Sciences
GA 455EZ
UT WOS:000266742200004
ER
PT J
AU Chattopadhyay, R
Conteh, S
Li, ML
James, ER
Epstein, JE
Hoffman, SL
AF Chattopadhyay, Rana
Conteh, Solomon
Li, MingLin
James, Eric R.
Epstein, Judith E.
Hoffman, Stephen L.
TI The Effects of radiation on the safety and protective efficacy of an
attenuated Plasmodium yoelii sporozoite malaria vaccine
SO VACCINE
LA English
DT Article
DE Malaria; Vaccine; Sporozoites; Radiation; Attenuation; Plasmodium yoelii
ID IRRADIATED SPOROZOITES; FALCIPARUM SPOROZOITES; SURFACE PROTEIN-2; VIVAX
MALARIA; IMMUNIZATION; IMMUNITY; ANTIGEN; STRAIN; LEMURINUS; INFECTION
AB We are developing a radiation attenuated Plasmodium falciparum sporozoite (PfSPZ) malaria vaccine. An important step was to determine the minimum dose of irradiation required to adequately attenuate each sporozoite. This was studied in the Plasm odium yoelii rodent model system. Exposure to 100 Gy completely attenuated P. yoelii sporozoites (PySPZ). Next we demonstrated that immunization of mice intravenously with 3 doses of 750 PySPZ that had received 200 Gy, double the radiation dose required for attenuation, resulted in 100% protection. These results support the contention that a radiation attenuated sporozoite vaccine for malaria will be safe and effective at a range of radiation doses. (C) 2008 Elsevier Ltd. All rights reserved.
C1 [Chattopadhyay, Rana; Conteh, Solomon; Li, MingLin; James, Eric R.; Hoffman, Stephen L.] Sanaria Inc, Rockville, MD 20850 USA.
[Li, MingLin; Epstein, Judith E.] Prot Potential LLC, Rockville, MD 20850 USA.
[Hoffman, Stephen L.] USN, Med Res Ctr, US Mil Malaria Vaccine Program, Silver Spring, MD 20910 USA.
RP Hoffman, SL (reprint author), Sanaria Inc, 9800 Med Ctr Dr, Rockville, MD 20850 USA.
EM slhoffman@sanaria.com
FU SBIR Phase I [1 R43AI058499-01]; NIAID/NIH; Institute of One World
Health [Sanaria-01]; PATH-Malaria Vaccine Initiative
[GAT0005-07276-COA.A]
FX We thank Dr. Martha Seclegah, U. S. Military Malaria Vaccine Program,
Naval Medical Research Center/Walter Reed Army Institute of Research,
Silver Spring, MD for advice. We also thank Steve Matheny and the rest
of the Sanaria Mosquito Production team for providing mosquitoes,
Aderonke Awe for dissection of mosquitoes, LiXin Gao for processing of
sporozoites, and Dr. Charles Anderson for editing. Dr. Judith E. Epstein
is a military service member; her contribution to the manuscript was
conducted as part of her official duties. The opinions and assertions
herein are the private ones of the authors and are not to be construed
as official or as reflecting the views of the US Navy or the Department
of Defense. This work was supported by SBIR Phase I grant 1
R43AI058499-01 from NIAID/NIH, grant Sanaria-01 from The Institute of
One World Health and grant GAT0005-07276-COA.A from the PATH-Malaria
Vaccine Initiative.
NR 26
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PU ELSEVIER SCI LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
SN 0264-410X
J9 VACCINE
JI Vaccine
PD JUN 2
PY 2009
VL 27
IS 27
BP 3675
EP 3680
DI 10.1016/j.vaccine.2008.11.073
PG 6
WC Immunology; Medicine, Research & Experimental
SC Immunology; Research & Experimental Medicine
GA 463VG
UT WOS:000267459900024
PM 19071177
ER
PT J
AU Bukowinski, A
Rockswold, P
Smith, B
Smith, T
AF Bukowinski, A.
Rockswold, P.
Smith, B.
Smith, T.
TI GUILLAIN-BARRE SYNDROME IN US ACTIVE-DUTY MILITARY PERSONNEL
SO AMERICAN JOURNAL OF EPIDEMIOLOGY
LA English
DT Meeting Abstract
CT 42nd Annual Meeting of the Society-for-Epidemiologic-Research
CY JUN 23-26, 2009
CL Anaheim, CA
SP Soc Epidemiol Res
C1 [Bukowinski, A.; Rockswold, P.; Smith, B.; Smith, T.] Naval Hlth Res Ctr, San Diego, CA 92106 USA.
RI Bukowinski, Anna/A-7273-2010
NR 0
TC 0
Z9 0
U1 0
U2 0
PU OXFORD UNIV PRESS INC
PI CARY
PA JOURNALS DEPT, 2001 EVANS RD, CARY, NC 27513 USA
SN 0002-9262
J9 AM J EPIDEMIOL
JI Am. J. Epidemiol.
PD JUN 1
PY 2009
VL 169
BP S58
EP S58
PG 1
WC Public, Environmental & Occupational Health
SC Public, Environmental & Occupational Health
GA 456SK
UT WOS:000266868300230
ER
PT J
AU Granado, N
Smith, T
Swanson, M
Harris, R
Shahar, E
Smith, B
Boyko, E
Wells, T
Ryan, M
AF Granado, N.
Smith, T.
Swanson, M.
Harris, R.
Shahar, E.
Smith, B.
Boyko, E.
Wells, T.
Ryan, M.
TI NEW-ONSET HYPERTENSION ASSOCIATED WITH COMBAT DEPLOYMENT IN MILLENNIUM
COHORT ACTIVE-DUTY, RESERVE AND NATIONAL GUARD MEMBERS
SO AMERICAN JOURNAL OF EPIDEMIOLOGY
LA English
DT Meeting Abstract
CT 42nd Annual Meeting of the Society-for-Epidemiologic-Research
CY JUN 23-26, 2009
CL Anaheim, CA
SP Soc Epidemiol Res
C1 [Granado, N.; Smith, T.; Swanson, M.; Harris, R.; Shahar, E.; Smith, B.; Boyko, E.; Wells, T.; Ryan, M.] USN, Hlth Res Ctr, San Diego, CA 92103 USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU OXFORD UNIV PRESS INC
PI CARY
PA JOURNALS DEPT, 2001 EVANS RD, CARY, NC 27513 USA
SN 0002-9262
J9 AM J EPIDEMIOL
JI Am. J. Epidemiol.
PD JUN 1
PY 2009
VL 169
BP S46
EP S46
PG 1
WC Public, Environmental & Occupational Health
SC Public, Environmental & Occupational Health
GA 456SK
UT WOS:000266868300184
ER
PT J
AU Granado, N
Smith, T
Smith, B
Koffman, R
AF Granado, N.
Smith, T.
Smith, B.
Koffman, R.
TI MEETING THE MENTAL HEALTH NEEDS OF OUR DEPLOYING SERVICE MEMBERS:
ASSESSMENT USING SELF-REPORTED SYMPTOM SCREEN AND ELECTRONIC MEDICAL
ENCOUNTER DATA
SO AMERICAN JOURNAL OF EPIDEMIOLOGY
LA English
DT Meeting Abstract
CT 42nd Annual Meeting of the Society-for-Epidemiologic-Research
CY JUN 23-26, 2009
CL Anaheim, CA
SP Soc Epidemiol Res
C1 [Granado, N.; Smith, T.; Smith, B.; Koffman, R.] Naval Hlth Res Ctr, San Diego, CA 92106 USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU OXFORD UNIV PRESS INC
PI CARY
PA JOURNALS DEPT, 2001 EVANS RD, CARY, NC 27513 USA
SN 0002-9262
J9 AM J EPIDEMIOL
JI Am. J. Epidemiol.
PD JUN 1
PY 2009
VL 169
BP S9
EP S9
PG 1
WC Public, Environmental & Occupational Health
SC Public, Environmental & Occupational Health
GA 456SK
UT WOS:000266868300037
ER
PT J
AU Hooper, T
Granado, N
Gackstetter, G
Scher, A
Jankosky, C
Boyko, E
Smith, T
AF Hooper, T.
Granado, N.
Gackstetter, G.
Scher, A.
Jankosky, C.
Boyko, E.
Smith, T.
TI THE PREVALENCE OF MIGRAINE AND OTHER HEADACHE DISORDERS IN MILLENNIUM
COHORT ACTIVE-DUTY, RESERVE AND NATIONAL GUARD MEMBERS.
SO AMERICAN JOURNAL OF EPIDEMIOLOGY
LA English
DT Meeting Abstract
CT 42nd Annual Meeting of the Society-for-Epidemiologic-Research
CY JUN 23-26, 2009
CL Anaheim, CA
SP Soc Epidemiol Res
C1 [Hooper, T.; Granado, N.; Gackstetter, G.; Scher, A.; Jankosky, C.; Boyko, E.; Smith, T.] USN, Hlth Res Ctr, San Diego, CA 92106 USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU OXFORD UNIV PRESS INC
PI CARY
PA JOURNALS DEPT, 2001 EVANS RD, CARY, NC 27513 USA
SN 0002-9262
J9 AM J EPIDEMIOL
JI Am. J. Epidemiol.
PD JUN 1
PY 2009
VL 169
BP S118
EP S118
PG 1
WC Public, Environmental & Occupational Health
SC Public, Environmental & Occupational Health
GA 456SK
UT WOS:000266868300468
ER
PT J
AU Jacobson, IG
LeardMann, CA
Smith, TC
Smith, B
Wells, TS
Boyko, EJ
Ryan, MAK
AF Jacobson, I. G.
LeardMann, C. A.
Smith, T. C.
Smith, B.
Wells, T. S.
Boyko, E. J.
Ryan, M. A. K.
CA Millennium Cohort Study Team
TI PROSPECTIVE ANALYSIS OF POSTTRAUMATIC STRESS DISORDER AND DEPRESSION
AMONG MILITARY PROFESSIONAL CAREGIVERS DEPLOYED TO THE WARS IN IRAQ AND
AFGHANISTAN
SO AMERICAN JOURNAL OF EPIDEMIOLOGY
LA English
DT Meeting Abstract
CT 42nd Annual Meeting of the Society-for-Epidemiologic-Research
CY JUN 23-26, 2009
CL Anaheim, CA
SP Soc Epidemiol Res
C1 [Jacobson, I. G.; LeardMann, C. A.; Smith, T. C.; Smith, B.; Wells, T. S.; Boyko, E. J.; Ryan, M. A. K.; Millennium Cohort Study Team] USN, Hlth Res Ctr, San Diego, CA 92106 USA.
NR 0
TC 0
Z9 0
U1 0
U2 1
PU OXFORD UNIV PRESS INC
PI CARY
PA JOURNALS DEPT, 2001 EVANS RD, CARY, NC 27513 USA
SN 0002-9262
J9 AM J EPIDEMIOL
JI Am. J. Epidemiol.
PD JUN 1
PY 2009
VL 169
BP S124
EP S124
PG 1
WC Public, Environmental & Occupational Health
SC Public, Environmental & Occupational Health
GA 456SK
UT WOS:000266868300491
ER
PT J
AU Jacobson, IG
Awong, C
Smith, B
Boyko, EJ
Gackstetter, GD
Smith, TC
AF Jacobson, I. G.
Awong, C.
Smith, B.
Boyko, E. J.
Gackstetter, G. D.
Smith, T. C.
CA Millennium Cohort Study Team
TI IS COMPLEMENTARY AND ALTERNATIVE MEDICINE USE ASSOCIATED WITH CHANGE IN
BODY MASS INDEX IN A LARGE MILITARY COHORT?
SO AMERICAN JOURNAL OF EPIDEMIOLOGY
LA English
DT Meeting Abstract
CT 42nd Annual Meeting of the Society-for-Epidemiologic-Research
CY JUN 23-26, 2009
CL Anaheim, CA
SP Soc Epidemiol Res
C1 [Jacobson, I. G.; Awong, C.; Smith, B.; Boyko, E. J.; Gackstetter, G. D.; Smith, T. C.; Millennium Cohort Study Team] Naval Hlth Res Ctr, San Diego, CA 92106 USA.
NR 0
TC 0
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U1 0
U2 0
PU OXFORD UNIV PRESS INC
PI CARY
PA JOURNALS DEPT, 2001 EVANS RD, CARY, NC 27513 USA
SN 0002-9262
J9 AM J EPIDEMIOL
JI Am. J. Epidemiol.
PD JUN 1
PY 2009
VL 169
BP S61
EP S61
PG 1
WC Public, Environmental & Occupational Health
SC Public, Environmental & Occupational Health
GA 456SK
UT WOS:000266868300242
ER
PT J
AU Jacobson, IG
Smith, TC
LeardMann, CA
Smith, B
Ryan, MAK
AF Jacobson, I. G.
Smith, T. C.
LeardMann, C. A.
Smith, B.
Ryan, M. A. K.
TI POSTDEPLOYMENT HOSPITALIZATION EXPERIENCE OF SERVICE MEMBERS DEPLOYED IN
SUPPORT OF THE WARS IN IRAQ AND AFGHANISTAN
SO AMERICAN JOURNAL OF EPIDEMIOLOGY
LA English
DT Meeting Abstract
CT 42nd Annual Meeting of the Society-for-Epidemiologic-Research
CY JUN 23-26, 2009
CL Anaheim, CA
SP Soc Epidemiol Res
C1 [Jacobson, I. G.; Smith, T. C.; LeardMann, C. A.; Smith, B.; Ryan, M. A. K.] USN, Hlth Res Ctr, San Diego, CA 92106 USA.
NR 0
TC 0
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U1 0
U2 0
PU OXFORD UNIV PRESS INC
PI CARY
PA JOURNALS DEPT, 2001 EVANS RD, CARY, NC 27513 USA
SN 0002-9262
J9 AM J EPIDEMIOL
JI Am. J. Epidemiol.
PD JUN 1
PY 2009
VL 169
BP S46
EP S46
PG 1
WC Public, Environmental & Occupational Health
SC Public, Environmental & Occupational Health
GA 456SK
UT WOS:000266868300183
ER
PT J
AU Kelton, ML
LeardMann, CA
Smith, B
Boyko, EJ
Wells, TS
Littman, A
Smith, TC
AF Kelton, M. L.
LeardMann, C. A.
Smith, B.
Boyko, E. J.
Wells, T. S.
Littman, A.
Smith, T. C.
CA Millennium Cohort Study Team
TI PHYSICAL ACTIVITY IS ASSOCIATED WITH POSTTRAUMATIC STRESS DISORDER
SYMPTOMS IN A LARGE, MILITARY COHORT
SO AMERICAN JOURNAL OF EPIDEMIOLOGY
LA English
DT Meeting Abstract
CT 42nd Annual Meeting of the Society-for-Epidemiologic-Research
CY JUN 23-26, 2009
CL Anaheim, CA
SP Soc Epidemiol Res
C1 [Kelton, M. L.; LeardMann, C. A.; Smith, B.; Boyko, E. J.; Wells, T. S.; Littman, A.; Smith, T. C.; Millennium Cohort Study Team] USN, Hlth Res Ctr, San Diego, CA 92106 USA.
NR 0
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PI CARY
PA JOURNALS DEPT, 2001 EVANS RD, CARY, NC 27513 USA
SN 0002-9262
J9 AM J EPIDEMIOL
JI Am. J. Epidemiol.
PD JUN 1
PY 2009
VL 169
BP S66
EP S66
PG 1
WC Public, Environmental & Occupational Health
SC Public, Environmental & Occupational Health
GA 456SK
UT WOS:000266868300262
ER
PT J
AU LeardMann, CA
Jacobson, IG
Smith, B
Wells, TS
Boyko, EJ
Ryan, MAK
Smith, TC
AF LeardMann, C. A.
Jacobson, I. G.
Smith, B.
Wells, T. S.
Boyko, E. J.
Ryan, M. A. K.
Smith, T. C.
CA Millennium Cohort Study Team
TI A PROSPECTIVE INVESTIGATION OF POSTTRAUMATIC STRESS DISORDER AND BODY
WEIGHT IN A LARGE MILITARY COHORT
SO AMERICAN JOURNAL OF EPIDEMIOLOGY
LA English
DT Meeting Abstract
CT 42nd Annual Meeting of the Society-for-Epidemiologic-Research
CY JUN 23-26, 2009
CL Anaheim, CA
SP Soc Epidemiol Res
C1 [LeardMann, C. A.; Jacobson, I. G.; Smith, B.; Wells, T. S.; Boyko, E. J.; Ryan, M. A. K.; Smith, T. C.; Millennium Cohort Study Team] USN, Hlth Res Ctr, San Diego, CA 92106 USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU OXFORD UNIV PRESS INC
PI CARY
PA JOURNALS DEPT, 2001 EVANS RD, CARY, NC 27513 USA
SN 0002-9262
J9 AM J EPIDEMIOL
JI Am. J. Epidemiol.
PD JUN 1
PY 2009
VL 169
BP S66
EP S66
PG 1
WC Public, Environmental & Occupational Health
SC Public, Environmental & Occupational Health
GA 456SK
UT WOS:000266868300263
ER
PT J
AU Sandweiss, D
Slymen, D
LeardMann, C
Smith, B
White, M
Hooper, T
Gackstetter, G
Amoroso, P
Smith, T
AF Sandweiss, D.
Slymen, D.
LeardMann, C.
Smith, B.
White, M.
Hooper, T.
Gackstetter, G.
Amoroso, P.
Smith, T.
CA Millennium Cohort Study Team
TI A PROSPECTIVE ANALYSIS OF THE EFFECTS OF PRE-INJURY PSYCHOLOGICAL STATUS
ON THE PSYCHOLOGICAL IMPACT OF INJURY DURING DEPLOYMENT IN SUPPORT OF
THE WARS IN IRAQ AND AFGHANISTAN
SO AMERICAN JOURNAL OF EPIDEMIOLOGY
LA English
DT Meeting Abstract
CT 42nd Annual Meeting of the Society-for-Epidemiologic-Research
CY JUN 23-26, 2009
CL Anaheim, CA
SP Soc Epidemiol Res
C1 [Sandweiss, D.; Slymen, D.; LeardMann, C.; Smith, B.; White, M.; Hooper, T.; Gackstetter, G.; Amoroso, P.; Smith, T.; Millennium Cohort Study Team] USN, Hlth Res Ctr, San Diego, CA 92106 USA.
NR 0
TC 0
Z9 0
U1 0
U2 1
PU OXFORD UNIV PRESS INC
PI CARY
PA JOURNALS DEPT, 2001 EVANS RD, CARY, NC 27513 USA
SN 0002-9262
J9 AM J EPIDEMIOL
JI Am. J. Epidemiol.
PD JUN 1
PY 2009
VL 169
BP S108
EP S108
PG 1
WC Public, Environmental & Occupational Health
SC Public, Environmental & Occupational Health
GA 456SK
UT WOS:000266868300430
ER
PT J
AU Seelig, AD
Jacobson, IG
Smith, B
Hooper, TI
Boyko, EJ
Gackstetter, GD
Gehrman, P
Macera, CA
Smith, TC
AF Seelig, A. D.
Jacobson, I. G.
Smith, B.
Hooper, T. I.
Boyko, E. J.
Gackstetter, G. D.
Gehrman, P.
Macera, C. A.
Smith, T. C.
CA Millennium Cohort Study Team
TI SLEEP PATTERNS BEFORE, DURING, AND AFTER MILITARY COMBAT DEPLOYMENT IN
SUPPORT OF THE WARS IN IRAQ AND AFGHANISTAN
SO AMERICAN JOURNAL OF EPIDEMIOLOGY
LA English
DT Meeting Abstract
CT 42nd Annual Meeting of the Society-for-Epidemiologic-Research
CY JUN 23-26, 2009
CL Anaheim, CA
SP Soc Epidemiol Res
C1 [Seelig, A. D.; Jacobson, I. G.; Smith, B.; Hooper, T. I.; Boyko, E. J.; Gackstetter, G. D.; Gehrman, P.; Macera, C. A.; Smith, T. C.; Millennium Cohort Study Team] USN, Hlth Res Ctr, San Diego, CA 92106 USA.
NR 0
TC 0
Z9 0
U1 0
U2 1
PU OXFORD UNIV PRESS INC
PI CARY
PA JOURNALS DEPT, 2001 EVANS RD, CARY, NC 27513 USA
SN 0002-9262
J9 AM J EPIDEMIOL
JI Am. J. Epidemiol.
PD JUN 1
PY 2009
VL 169
BP S123
EP S123
PG 1
WC Public, Environmental & Occupational Health
SC Public, Environmental & Occupational Health
GA 456SK
UT WOS:000266868300490
ER
PT J
AU Smith, B
Wingard, D
Ryan, M
Slymen, D
Macera, C
Patterson, T
AF Smith, B.
Wingard, D.
Ryan, M.
Slymen, D.
Macera, C.
Patterson, T.
CA Millennium Cohort Study Team
TI THE ASSOCIATION OF FREQUENCY AND DURATION OF DEPLOYMENT AND FUNCTIONAL
HEALTH AMONG SERVICE MEMBERS DEPLOYED IN SUPPORT OF THE WARS IN IRAQ AND
AFGHANISTAN
SO AMERICAN JOURNAL OF EPIDEMIOLOGY
LA English
DT Meeting Abstract
CT 42nd Annual Meeting of the Society-for-Epidemiologic-Research
CY JUN 23-26, 2009
CL Anaheim, CA
SP Soc Epidemiol Res
C1 [Smith, B.; Wingard, D.; Ryan, M.; Slymen, D.; Macera, C.; Patterson, T.; Millennium Cohort Study Team] USN, Hlth Res Ctr, San Diego, CA 92106 USA.
NR 0
TC 0
Z9 0
U1 0
U2 1
PU OXFORD UNIV PRESS INC
PI CARY
PA JOURNALS DEPT, 2001 EVANS RD, CARY, NC 27513 USA
SN 0002-9262
J9 AM J EPIDEMIOL
JI Am. J. Epidemiol.
PD JUN 1
PY 2009
VL 169
BP S124
EP S124
PG 1
WC Public, Environmental & Occupational Health
SC Public, Environmental & Occupational Health
GA 456SK
UT WOS:000266868300494
ER
PT J
AU Smith, B
Wong, C
Smith, T
Ryan, M
Boyko, E
Gackstetter, G
Gray, G
AF Smith, B.
Wong, C.
Smith, T.
Ryan, M.
Boyko, E.
Gackstetter, G.
Gray, G.
CA Millennium Cohort Study Team
TI PROSPECTIVE INVESTIGATION OF NEW-ONSET RESPIRATORY ILLNESS AMONG
DEPLOYED MILITARY PERSONNEL
SO AMERICAN JOURNAL OF EPIDEMIOLOGY
LA English
DT Meeting Abstract
CT 42nd Annual Meeting of the Society-for-Epidemiologic-Research
CY JUN 23-26, 2009
CL Anaheim, CA
SP Soc Epidemiol Res
C1 [Smith, B.; Wong, C.; Smith, T.; Ryan, M.; Boyko, E.; Gackstetter, G.; Gray, G.; Millennium Cohort Study Team] USN, Hlth Res Ctr, San Diego, CA 92106 USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU OXFORD UNIV PRESS INC
PI CARY
PA JOURNALS DEPT, 2001 EVANS RD, CARY, NC 27513 USA
SN 0002-9262
J9 AM J EPIDEMIOL
JI Am. J. Epidemiol.
PD JUN 1
PY 2009
VL 169
BP S125
EP S125
PG 1
WC Public, Environmental & Occupational Health
SC Public, Environmental & Occupational Health
GA 456SK
UT WOS:000266868300495
ER
PT J
AU Smith, B
Boyko, E
Jacobson, I
Smith, T
Hooper, T
Amoroso, P
Gackstetter, G
Ryan, M
Barrett-Connor, E
AF Smith, B.
Boyko, E.
Jacobson, I.
Smith, T.
Hooper, T.
Amoroso, P.
Gackstetter, G.
Ryan, M.
Barrett-Connor, E.
TI RISK FACTORS FOR INCIDENT DIABETES IN US MILITARY PARTICIPANTS OF THE
MILLENNIUM COHORT STUDY
SO AMERICAN JOURNAL OF EPIDEMIOLOGY
LA English
DT Meeting Abstract
CT 42nd Annual Meeting of the Society-for-Epidemiologic-Research
CY JUN 23-26, 2009
CL Anaheim, CA
SP Soc Epidemiol Res
C1 [Smith, B.; Boyko, E.; Jacobson, I.; Smith, T.; Hooper, T.; Amoroso, P.; Gackstetter, G.; Ryan, M.; Barrett-Connor, E.] USN, Hlth Res Ctr, San Diego, CA 92106 USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU OXFORD UNIV PRESS INC
PI CARY
PA JOURNALS DEPT, 2001 EVANS RD, CARY, NC 27513 USA
SN 0002-9262
J9 AM J EPIDEMIOL
JI Am. J. Epidemiol.
PD JUN 1
PY 2009
VL 169
BP S2
EP S2
PG 1
WC Public, Environmental & Occupational Health
SC Public, Environmental & Occupational Health
GA 456SK
UT WOS:000266868300009
ER
PT J
AU Smith, B
Hooper, T
Gackstetter, G
LeardMann, C
Boyko, E
Pearse, L
Amoroso, P
Smith, T
AF Smith, Besa
Hooper, Tomoko
Gackstetter, Gary
LeardMann, C.
Boyko, E.
Pearse, L.
Amoroso, P.
Smith, T.
CA Millennium Cohort Study Team
TI EARLY MORTALITY EXPERIENCE AND A COMPARISON OF DATA SOURCES USED FOR
MORTALITY ASCERTAINMENT IN A LARGE MILITARY COHORT
SO AMERICAN JOURNAL OF EPIDEMIOLOGY
LA English
DT Meeting Abstract
CT 42nd Annual Meeting of the Society-for-Epidemiologic-Research
CY JUN 23-26, 2009
CL Anaheim, CA
SP Soc Epidemiol Res
C1 [Smith, Besa; Hooper, Tomoko; Gackstetter, Gary; LeardMann, C.; Boyko, E.; Pearse, L.; Amoroso, P.; Smith, T.; Millennium Cohort Study Team] USN, Hlth Res Ctr, San Diego, CA 92106 USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU OXFORD UNIV PRESS INC
PI CARY
PA JOURNALS DEPT, 2001 EVANS RD, CARY, NC 27513 USA
SN 0002-9262
J9 AM J EPIDEMIOL
JI Am. J. Epidemiol.
PD JUN 1
PY 2009
VL 169
BP S108
EP S108
PG 1
WC Public, Environmental & Occupational Health
SC Public, Environmental & Occupational Health
GA 456SK
UT WOS:000266868300429
ER
PT J
AU Smith, T
Smith, B
Jacobson, I
LeardMann, C
Welch, K
Farnell, L
AF Smith, T.
Smith, B.
Jacobson, I.
LeardMann, C.
Welch, K.
Farnell, L.
CA Millennium Cohort Study Team
TI THE MILLENNIUM COHORT STUDY: A 21-YEAR CONTRIBUTION TO THE UNDERSTANDING
OF MILITARY HEALTH
SO AMERICAN JOURNAL OF EPIDEMIOLOGY
LA English
DT Meeting Abstract
CT 42nd Annual Meeting of the Society-for-Epidemiologic-Research
CY JUN 23-26, 2009
CL Anaheim, CA
SP Soc Epidemiol Res
C1 [Smith, T.; Smith, B.; Jacobson, I.; LeardMann, C.; Welch, K.; Farnell, L.; Millennium Cohort Study Team] USN, Hlth Res Ctr, San Diego, CA 92106 USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU OXFORD UNIV PRESS INC
PI CARY
PA JOURNALS DEPT, 2001 EVANS RD, CARY, NC 27513 USA
SN 0002-9262
J9 AM J EPIDEMIOL
JI Am. J. Epidemiol.
PD JUN 1
PY 2009
VL 169
BP S124
EP S124
PG 1
WC Public, Environmental & Occupational Health
SC Public, Environmental & Occupational Health
GA 456SK
UT WOS:000266868300492
ER
PT J
AU Smith, T
Wells, T
Jacobson, I
Smith, B
LeardMann, C
Hoge, C
Blazer, D
Ryan, M
AF Smith, T.
Wells, T.
Jacobson, I.
Smith, B.
LeardMann, C.
Hoge, C.
Blazer, D.
Ryan, M.
CA Millennium Cohort Study Team
TI PROSPECTIVE INVESTIGATION OF MENTAL HEALTH CHALLENGES AND COPING
BEHAVIORS IN DEPLOYERS SUPPORTING THE WARS IN IRAQ AND AFGHANISTAN
SO AMERICAN JOURNAL OF EPIDEMIOLOGY
LA English
DT Meeting Abstract
CT 42nd Annual Meeting of the Society-for-Epidemiologic-Research
CY JUN 23-26, 2009
CL Anaheim, CA
SP Soc Epidemiol Res
C1 [Smith, T.; Wells, T.; Jacobson, I.; Smith, B.; LeardMann, C.; Hoge, C.; Blazer, D.; Ryan, M.; Millennium Cohort Study Team] Naval Hlth Res Ctr, San Diego, CA 92106 USA.
RI Blazer II, Dan/D-6675-2012
NR 0
TC 0
Z9 0
U1 0
U2 0
PU OXFORD UNIV PRESS INC
PI CARY
PA JOURNALS DEPT, 2001 EVANS RD, CARY, NC 27513 USA
SN 0002-9262
J9 AM J EPIDEMIOL
JI Am. J. Epidemiol.
PD JUN 1
PY 2009
VL 169
BP S63
EP S63
PG 1
WC Public, Environmental & Occupational Health
SC Public, Environmental & Occupational Health
GA 456SK
UT WOS:000266868300248
ER
PT J
AU Wells, T
LeardMann, C
Fortuna, S
Smith, B
Smith, T
Ryan, M
Boyko, E
Blazer, D
AF Wells, T.
LeardMann, C.
Fortuna, S.
Smith, B.
Smith, T.
Ryan, M.
Boyko, E.
Blazer, D.
CA Millennium Cohort Study Team
TI DEPRESSION IS PROSPECTIVELY ASSOCIATED WITH COMBAT DEPLOYMENT IN SUPPORT
OF THE WARS IN IRAQ AND AFGHANISTAN
SO AMERICAN JOURNAL OF EPIDEMIOLOGY
LA English
DT Meeting Abstract
CT 42nd Annual Meeting of the Society-for-Epidemiologic-Research
CY JUN 23-26, 2009
CL Anaheim, CA
SP Soc Epidemiol Res
C1 [Wells, T.; LeardMann, C.; Fortuna, S.; Smith, B.; Smith, T.; Ryan, M.; Boyko, E.; Blazer, D.; Millennium Cohort Study Team] USN, Hlth Res Ctr, San Diego, CA 92106 USA.
RI Blazer II, Dan/D-6675-2012
NR 0
TC 0
Z9 0
U1 0
U2 0
PU OXFORD UNIV PRESS INC
PI CARY
PA JOURNALS DEPT, 2001 EVANS RD, CARY, NC 27513 USA
SN 0002-9262
J9 AM J EPIDEMIOL
JI Am. J. Epidemiol.
PD JUN 1
PY 2009
VL 169
BP S66
EP S66
PG 1
WC Public, Environmental & Occupational Health
SC Public, Environmental & Occupational Health
GA 456SK
UT WOS:000266868300261
ER
PT J
AU Crum-Cianflone, N
AF Crum-Cianflone, Nancy
TI Clostridium innocuum Bacteremia in a Patient With Acquired
Immunodeficiency Syndrome
SO AMERICAN JOURNAL OF THE MEDICAL SCIENCES
LA English
DT Article
DE Clostridium innocuum bacteremia; Clostridium difficile infection; HIV;
Vancomycin
ID HUMAN INFECTIONS; RESISTANCE; VANCOMYCIN; PATTERNS
AB Clostridium innocuum is an unusual cause of infections ill humans. This report describes the first published case of C. innocuum bacteremia in a patient with AIDS and provides a review of the literature. The case suggests that recent C. difficile infection may be a risk factor for the subsequent development of C. innocuum bacteremia among immunosuppressed persons. Because of their intrinsic resistance to several common antibiotics, including vancomycin, C. innocuum infections are important to recognize.
C1 [Crum-Cianflone, Nancy] USN, Med Ctr San Diego, Clin Invest Dept KCA, Infect Dis Clin, San Diego, CA 92134 USA.
[Crum-Cianflone, Nancy] Uniformed Serv Univ Hlth Sci, TriServ AIDS Clin Consortium, Infect Dis Clin Res Program, Bethesda, MD 20814 USA.
RP Crum-Cianflone, N (reprint author), USN, Med Ctr San Diego, Clin Invest Dept KCA, Infect Dis Clin, 34800 Bob Wilson Dr,Ste 5, San Diego, CA 92134 USA.
EM nancy.crum@med.navy.mil
FU Infections Disease Clinical Research Program (IDCRP); Uniformed Services
University of the Health Sciences (USUHS), Bethesda, MD;
HHS/NIH/NIAID/DCR [HU0001-05-2-0011]
FX This study was supported by the Infections Disease Clinical Research
Program (IDCRP), Uniformed Services University of the Health Sciences
(USUHS), Bethesda, MD, Of which the TriService AIDS Clinical Consortium
(TACC) is a component. The IDCRP is a DoD tri-service program executed
through USUHS and the Henry M. Jackson Foundation for. the Advancement
of Military Medicine in collaboration with HHS/NIH/NIAID/DCR through
Interagency Agreement HU0001-05-2-0011
NR 13
TC 4
Z9 4
U1 0
U2 1
PU LIPPINCOTT WILLIAMS & WILKINS
PI PHILADELPHIA
PA 530 WALNUT ST, PHILADELPHIA, PA 19106-3621 USA
SN 0002-9629
J9 AM J MED SCI
JI Am. J. Med. Sci.
PD JUN
PY 2009
VL 337
IS 6
BP 480
EP 482
PG 3
WC Medicine, General & Internal
SC General & Internal Medicine
GA 459TD
UT WOS:000267131900019
PM 19525665
ER
PT J
AU Gentry, SE
Montgomery, RA
Swihart, BJ
Segev, DL
AF Gentry, S. E.
Montgomery, R. A.
Swihart, B. J.
Segev, D. L.
TI The Roles of Dominos and Nonsimultaneous Chains in Kidney Paired
Donation
SO AMERICAN JOURNAL OF TRANSPLANTATION
LA English
DT Article
DE Blood-type incompatibility; donor exchange; incompatible donors; live
donor kidney transplantation; nondirected donors; nonsimultaneous
extended altruistic donor chains; paired kidney exchange
ID EXCHANGE PROGRAM; DONOR
AB Efforts to expand kidney paired donation have included matching nondirected donors (NDDs) to incompatible pairs. In domino paired donation (DPD), an NDD gives to the recipient of an incompatible pair, beginning a string of simultaneous transplants that ends with a living donor giving to a recipient on the deceased donor waitlist. Recently, nonsimultaneous extended altruistic donor (NEAD) chains were introduced. In a NEAD chain, the last donor of the string of transplants initiated by an NDD is reserved to donate at a later time. Our aim was to project the impact of each of these strategies over 2 years of operation for paired donation programs that also allocate a given number of NDDs. Each NDD facilitated an average of 1.99 transplants using DPD versus 1.90 transplants using NEAD chains (p = 0.3), or 1.0 transplants donating directly to the waitlist (p < 0.001). NEAD chains did not yield more transplants compared with simultaneous DPD. Both DPD and NEAD chains relax reciprocality requirements and rebalance the blood-type distribution of donors. Because traditional paired donation will leave many incompatible pairs unmatched, novel approaches like DPD and NEAD chains must be explored if paired donation programs are to help a greater number of people.
C1 [Gentry, S. E.; Montgomery, R. A.; Swihart, B. J.; Segev, D. L.] Johns Hopkins Univ, Sch Med, Dept Surg, Baltimore, MD 21205 USA.
[Gentry, S. E.] USN Acad, Dept Math, Annapolis, MD 21402 USA.
RP Segev, DL (reprint author), Johns Hopkins Univ, Sch Med, Dept Surg, Baltimore, MD 21205 USA.
EM dorry@jhmi.edu
NR 18
TC 42
Z9 42
U1 0
U2 1
PU WILEY-BLACKWELL PUBLISHING, INC
PI MALDEN
PA COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA
SN 1600-6135
J9 AM J TRANSPLANT
JI Am. J. Transplant.
PD JUN
PY 2009
VL 9
IS 6
BP 1330
EP 1336
DI 10.1111/j.1600-6143.2009.02622.x
PG 7
WC Surgery; Transplantation
SC Surgery; Transplantation
GA 451CS
UT WOS:000266448900013
PM 19656136
ER
PT J
AU Kronmann, KC
Truett, AA
Hale, BR
Crum-Cianflone, NF
AF Kronmann, Karl C.
Truett, April A.
Hale, Braden R.
Crum-Cianflone, Nancy F.
TI Positive Serologic Test Results for Burkholderia pseudomallei in
Asymptomatic Persons
SO AMERICAN JOURNAL OF TROPICAL MEDICINE AND HYGIENE
LA English
DT Letter
ID ANTIBODY-TEST; MELIOIDOSIS; DIAGNOSIS; ASSAY
C1 [Kronmann, Karl C.; Truett, April A.; Hale, Braden R.; Crum-Cianflone, Nancy F.] USN, San Diego Med Ctr, Infect Dis Clin, San Diego, CA 92134 USA.
RP Kronmann, KC (reprint author), USN, San Diego Med Ctr, Infect Dis Clin, 34800 Bob Wilson Dr, San Diego, CA 92134 USA.
EM nancy.crum@med.navy.mil
NR 7
TC 0
Z9 0
U1 0
U2 0
PU AMER SOC TROP MED & HYGIENE
PI MCLEAN
PA 8000 WESTPARK DR, STE 130, MCLEAN, VA 22101 USA
SN 0002-9637
J9 AM J TROP MED HYG
JI Am. J. Trop. Med. Hyg.
PD JUN
PY 2009
VL 80
IS 6
BP 1065
EP 1066
PG 2
WC Public, Environmental & Occupational Health; Tropical Medicine
SC Public, Environmental & Occupational Health; Tropical Medicine
GA 453XI
UT WOS:000266645800038
ER
PT J
AU Kjornrattanawanich, B
Windt, DL
Bellotti, JA
Seely, JF
AF Kjornrattanawanich, Benjawan
Windt, David L.
Bellotti, Jeffrey A.
Seely, John F.
TI Measurement of dysprosium optical constants in the 2-830 eV spectral
range using a transmittance method, and compilation of the revised
optical constants of lanthanum, terbium, neodymium, and gadolinium
SO APPLIED OPTICS
LA English
DT Article
ID MULTILAYER MIRRORS; WATER WINDOW; REGION; SCANDIUM; NM; COEFFICIENTS;
WAVELENGTH; ABSORPTION; SCATTERING; YTTRIUM
AB The optical constants beta, delta of the complex refractive index ((n) over tilde = 1 - delta + i beta) of Dy were obtained in the 2-830 eV energy range using a novel transmittance method. Si/W/Dy/W films were deposited by dc-magnetron sputtering on Si photodiode substrates, and the transmittance was characterized using synchrotron radiation. The extinction coefficients beta of Dy and the transmittance of a Si capping layer and two W interface barrier layers as functions of energy were solved simultaneously using a nonlinear optimization routine. The measured transmittances of the capping and barrier layers were primarily used as indicators for any flaws in the transmittance results. The dispersion coefficients delta of Dy were calculated using the Kramers-Kronig integral, and a complete set of beta values required for this integral was obtained by combining the present data with data from the literature. Sum rule tests on Dy show some deficiencies in the present data, which may be attributed to lower film density compared with the bulk value. Similar procedures were applied to previously measured transmittances of B4C/La, Si/Tb, Si/Nd, and Si/Gd films, where B4C or Si were used as capping layers on those reactive rare-earth films. The improved sets of transmittance values of B4C and Si capping layers were used as input in the optimization routine to solve for more accurate beta values of La, Tb, Nd, and Gd. The revised optical constants of these materials, tested for consistency with partial sum rules, are also reported. (C) 2009 Optical Society of America
C1 [Kjornrattanawanich, Benjawan] Univ Space Res Assoc, Natl Synchrotron Light Source Beamline X24C, Brookhaven Natl Lab, Upton, NY 11973 USA.
[Windt, David L.; Bellotti, Jeffrey A.] Reflect Xray Opt LLC, New York, NY 10027 USA.
[Seely, John F.] USN, Res Lab, Div Space Sci, Washington, DC 20375 USA.
RP Kjornrattanawanich, B (reprint author), Univ Space Res Assoc, Natl Synchrotron Light Source Beamline X24C, Brookhaven Natl Lab, Upton, NY 11973 USA.
EM benjawan@bnl.gov
FU National Aeronautics and Space Administration (NASA); Office of Naval
Research (ONR)
FX This work has been supported by the National Aeronautics and Space
Administration (NASA) and the Office of Naval Research (ONR).
NR 26
TC 11
Z9 11
U1 0
U2 5
PU OPTICAL SOC AMER
PI WASHINGTON
PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA
SN 1559-128X
EI 2155-3165
J9 APPL OPTICS
JI Appl. Optics
PD JUN 1
PY 2009
VL 48
IS 16
BP 3084
EP 3093
DI 10.1364/AO.48.003084
PG 10
WC Optics
SC Optics
GA 460QO
UT WOS:000267202400016
PM 19488122
ER
PT J
AU Garzarella, A
Qadri, SB
Wu, DH
AF Garzarella, A.
Qadri, S. B.
Wu, Dong Ho
TI Optimal electro-optic sensor configuration for phase noise limited,
remote field sensing applications
SO APPLIED PHYSICS LETTERS
LA English
DT Article
DE birefringence; electro-optical devices; fibre optic sensors
ID ELECTRIC-FIELD
AB Electro-optic (EO) sensors, used for the nonperturbative detection of electric fields, are typically configured to modulate an optical probe beam along a crystal direction in which the EO tensor coefficient is largest. However in fiber optic EO sensors, such configurations can be strongly limited by phase noise and cumbersome compensation optics. Our results demonstrate that a greater signal to noise ratio can be achieved by modulating along a crystal direction of low static birefringence, even when the active EO tensor coefficient is several times smaller.
C1 [Garzarella, A.; Qadri, S. B.; Wu, Dong Ho] USN, Res Lab, Washington, DC 20375 USA.
RP Garzarella, A (reprint author), USN, Res Lab, Washington, DC 20375 USA.
EM garzarel@anvil.nrl.navy.mil
NR 10
TC 21
Z9 21
U1 3
U2 11
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 JUN 1
PY 2009
VL 94
IS 22
AR 221113
DI 10.1063/1.3152792
PG 3
WC Physics, Applied
SC Physics
GA 454HZ
UT WOS:000266674300013
ER
PT J
AU Marti-Vidal, I
Marcaide, JM
Alberdi, A
Guirado, JC
Perez-Torres, MA
Ros, E
Shapiro, II
Beswick, RJ
Muxlow, TWB
Pedlar, A
Argo, MK
Immler, S
Panagia, N
Stockdale, CJ
Sramek, RA
Van Dyk, S
Weiler, KW
AF Marti-Vidal, I.
Marcaide, J. M.
Alberdi, A.
Guirado, J. C.
Perez-Torres, M. A.
Ros, E.
Shapiro, I. I.
Beswick, R. J.
Muxlow, T. W. B.
Pedlar, A.
Argo, M. K.
Immler, S.
Panagia, N.
Stockdale, C. J.
Sramek, R. A.
Van Dyk, S.
Weiler, K. W.
TI 23 GHz VLBI observations of SN 2008ax (Research Note)
SO ASTRONOMY & ASTROPHYSICS
LA English
DT Article
DE galaxies: individual: NGC 4490; radio continuum: stars; supernovae:
individual: SN 2008ax; supernovae: general
AB We report on phase-referenced 23 GHz Very-Long-Baseline-Interferometry (VLBI) observations of the type IIb supernova SN 2008ax, made with the Very Long Baseline Array (VLBA) on 2 April 2008 (33 days after explosion). These observations resulted in a marginal detection of the supernova. The total flux density recovered from our VLBI image is 0.8 +/- 0.3 mJy (one standard deviation). As it appears, the structure may be interpreted as either a core-jet or a double source. However, the supernova structure could be somewhat confused with a possible close by noise peak. In such a case, the recovered flux density would decrease to 0.48 +/- 0.12 mJy, compatible with the flux densities measured with the VLA at epochs close in time to our VLBI observations. The lowest average expansion velocities derived from our observations are (1.90 +/- 0.30) x 10(5) km s(-1) (case of a double source) and (5.2 +/- 1.3) x 10(4) km s(-1) (taking the weaker source component as a spurious, close by, noise peak, which is the more likely interpretation). These velocities are 7.3 and 2 times higher, respectively, than the maximum ejecta velocity inferred from optical-line observations.
C1 [Marti-Vidal, I.; Marcaide, J. M.; Guirado, J. C.; Ros, E.] Univ Valencia, Dpt Astron & Astrofis, E-46100 Burjassot, Spain.
[Weiler, K. W.] USN, Res Lab, Washington, DC 20375 USA.
[Van Dyk, S.] Univ Calif Berkeley, Dept Astron, Berkeley, CA 94720 USA.
[Shapiro, I. I.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA.
[Marti-Vidal, I.; Ros, E.] Max Planck Inst Radioastron, D-53121 Bonn, Germany.
[Panagia, N.] Space Telescope Sci Inst, Baltimore, MD 21218 USA.
[Beswick, R. J.; Muxlow, T. W. B.; Pedlar, A.] Jodrell Bank Observ, Macclesfield SK11 9DL, Cheshire, England.
[Alberdi, A.; Perez-Torres, M. A.] CSIC, Inst Astrofis Andalucia, E-18008 Granada, Spain.
[Sramek, R. A.] Natl Radio Astron Observ, Socorro, NM 87801 USA.
[Stockdale, C. J.] Marquette Univ, Dept Phys, Milwaukee, WI 53201 USA.
[Immler, S.] NASA, Goddard Space Flight Ctr, Astrophys Sci Div, Greenbelt, MD 20771 USA.
[Argo, M. K.] Curtin Univ Technol, Dept Imaging & Appl Phys, Bentley, WA 6845, Australia.
[Panagia, N.] INAF Osservatorio Astrofis Catania, I-95123 Catania, Italy.
RP Marti-Vidal, I (reprint author), Univ Valencia, Dpt Astron & Astrofis, C Dr Moliner 50, E-46100 Burjassot, Spain.
EM I.Marti-Vidal@uv.es
RI Marti-Vidal, Ivan/A-8799-2017;
OI Marti-Vidal, Ivan/0000-0003-3708-9611; Muxlow,
Thomas/0000-0001-5797-8796; Ros, Eduardo/0000-0001-9503-4892; Argo,
Megan/0000-0003-3594-0214; Van Dyk, Schuyler/0000-0001-9038-9950
FU Spanish DGICYT [AYA2006-14986-CO2-01, AYA2006-14986-C02-02]; Office of
Naval Research; Alexander von Humboldt Foundation
FX The National Radio Astronomy Observatory is a facility of the National
Science Foundation, operated under cooperative agreement by Associated
Universities, Inc. This work has been partially funded by grants
AYA2006-14986-CO2-01 and AYA2006-14986-C02-02 of the Spanish DGICYT. K.
W. W. thanks the Office of Naval Research for the 6.1 funding supporting
this research. I. M. V. is a fellow of the Alexander von Humboldt
Foundation.
NR 15
TC 5
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U1 0
U2 0
PU EDP SCIENCES S A
PI LES ULIS CEDEX A
PA 17, AVE DU HOGGAR, PA COURTABOEUF, BP 112, F-91944 LES ULIS CEDEX A,
FRANCE
SN 0004-6361
J9 ASTRON ASTROPHYS
JI Astron. Astrophys.
PD JUN
PY 2009
VL 499
IS 3
BP 649
EP 652
DI 10.1051/0004-6361/200912034
PG 4
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 455BK
UT WOS:000266730600006
ER
PT J
AU Vrsnak, B
Poletto, G
Vujic, E
Vourlidas, A
Ko, YK
Raymond, JC
Ciaravella, A
Zic, T
Webb, DF
Bemporad, A
Landini, F
Schettino, G
Jacobs, C
Suess, ST
AF Vrsnak, B.
Poletto, G.
Vujic, E.
Vourlidas, A.
Ko, Y. -K.
Raymond, J. C.
Ciaravella, A.
Zic, T.
Webb, D. F.
Bemporad, A.
Landini, F.
Schettino, G.
Jacobs, C.
Suess, S. T.
TI Morphology and density structure of post-CME current sheets
SO ASTRONOMY & ASTROPHYSICS
LA English
DT Article
DE Sun: coronal mass ejections (CMEs); Sun: corona; Sun: solar wind;
magnetohydrodynamics (MHD)
ID CORONAL MASS EJECTIONS; FLARE SUPRA-ARCADE; SOLAR-FLARE; MAGNETIC
RECONNECTION; ENERGY-RELEASE; 2-RIBBON FLARE; ACTIVE-REGION; II BURSTS;
MODEL; DYNAMICS
AB Context. Eruption of a coronal mass ejection (CME) drags and "opens" the coronal magnetic field, presumably leading to the formation of a large-scale current sheet and field relaxation by magnetic reconnection.
Aims. We analyze the physical characteristics of ray-like coronal features formed in the aftermath of CMEs, to confirm whether interpreting this phenomenon in terms of a reconnecting current sheet is consistent with observations.
Methods. The study focuses on measurements of the ray width, density excess, and coronal velocity field as a function of the radial distance. Results. The morphology of the rays implies that they are produced by Petschek-like reconnection in the large-scale current sheet formed in the wake of CME. The hypothesis is supported by the flow pattern, often showing outflows along the ray, and sometimes also inflows into the ray. The inferred inflow velocities range from 3 to 30 km s(-1), and are consistent with the narrow opening-angle of rays, which add up to a few degrees. The density of rays is an order of magnitude higher than in the ambient corona. The density-excess measurements are compared with the results of the analytical model in which the Petschek-like reconnection geometry is applied to the vertical current sheet, taking into account the decrease in the external coronal density and magnetic field with height.
Conclusions. The model results are consistent with the observations, revealing that the main cause of the density excess in rays is a transport of the dense plasma from lower to higher heights by the reconnection outflow.
C1 [Vrsnak, B.; Zic, T.] Fac Geodesy, Hvar Observ, Zagreb, Croatia.
[Poletto, G.] INAF Arcetri Observ, Florence, Italy.
[Vourlidas, A.; Ko, Y. -K.] USN, Res Lab, Washington, DC 20375 USA.
[Raymond, J. C.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA USA.
[Ciaravella, A.] INAF Palermo Observ, Palermo, Italy.
[Webb, D. F.] Boston Coll, Hanscom AFB, MA USA.
[Bemporad, A.] INAF Torino Astrophys Observ, Pino Torinese, Italy.
[Landini, F.; Schettino, G.] Univ Florence, Dept Astron & Space Sci, I-50121 Florence, Italy.
[Jacobs, C.] Katholieke Univ Leuven, Ctr Plasma Astrofys, Louvain, Belgium.
RP Vrsnak, B (reprint author), Fac Geodesy, Hvar Observ, Zagreb, Croatia.
EM bvrsnak@geof.hr
RI Vourlidas, Angelos/C-8231-2009;
OI Vourlidas, Angelos/0000-0002-8164-5948; Ciaravella,
Angela/0000-0002-3127-8078; Schettino, Giulia/0000-0003-0819-5052;
Bemporad, Alessandro/0000-0001-5796-5653
NR 67
TC 32
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U1 0
U2 4
PU EDP SCIENCES S A
PI LES ULIS CEDEX A
PA 17, AVE DU HOGGAR, PA COURTABOEUF, BP 112, F-91944 LES ULIS CEDEX A,
FRANCE
SN 0004-6361
J9 ASTRON ASTROPHYS
JI Astron. Astrophys.
PD JUN
PY 2009
VL 499
IS 3
BP 905
EP 916
DI 10.1051/0004-6361/200810844
PG 12
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 455BK
UT WOS:000266730600031
ER
PT J
AU Koza, J
Rutten, RJ
Vourlidas, A
AF Koza, J.
Rutten, R. J.
Vourlidas, A.
TI Dynamic Ly alpha jets
SO ASTRONOMY & ASTROPHYSICS
LA English
DT Article
DE Sun: transition region; Sun: UV radiation
ID SOLAR TRANSITION REGION; MAGNETOACOUSTIC SHOCKS; SPICULES; FIBRILS;
CHROMOSPHERE; RESOLUTION; SIMULATIONS; NETWORK; DRIVEN
AB Context. The solar chromosphere and transition region are highly structured and complex regimes. A recent breakthrough has been the identification of dynamic fibrils observed in H alpha as caused by field-aligned magnetoacoustic shocks.
Aims. We seek to find whether such dynamic fibrils are also observed in Ly alpha.
Methods. We used a brief sequence of four high-resolution Ly alpha images of the solar limb taken by the Very high Angular resolution ULtraviolet Telescope (VAULT), which displays many extending and retracting Ly alpha jets. We measured their top trajectories and fitted parabolas to the 30 best-defined ones.
Results. Most jet tops move supersonically. Half of them decelerate, sometimes superballistically, the others accelerate. This bifurcation may arise from incomplete sampling of recurrent jets.
Conclusions. The similarities between dynamic Ly alpha jets and H alpha fibrils suggest that the magnetoacoustic shocks causing dynamic H alpha fibrils also affect dynamic Ly alpha jets.
C1 [Koza, J.] Slovak Acad Sci, Astron Inst, Tatranska Lomnica 05960, Slovakia.
[Rutten, R. J.] Univ Utrecht, Sterrekundig Inst, NL-3508 TA Utrecht, Netherlands.
[Rutten, R. J.] Univ Oslo, Inst Theoret Astrophys, N-0315 Oslo, Norway.
[Vourlidas, A.] USN, Res Lab, Washington, DC 20375 USA.
RP Koza, J (reprint author), Slovak Acad Sci, Astron Inst, Tatranska Lomnica 05960, Slovakia.
EM koza@astro.sk
RI Vourlidas, Angelos/C-8231-2009
OI Vourlidas, Angelos/0000-0002-8164-5948
FU EC [MERG-CT-2007-046475]; Slovak Research and Development Agency APVV
[APVV-0066-06]; Office of Naval Research [SP033-02-43]; NASA [S-84002F]
FX We are indebted to P. S~tterlin for providing his imagealignment
routines and to the referee whose comments improved the paper
substantially. J. Koza thanks J. Rybak, P. Gomiry, and A. Kucera for
valuable discussions and comments. His research was supported by EC
Marie Curie European Re-Integration Grant MERG-CT-2007-046475 and by the
Slovak Research and Development Agency APVV under contract APVV-0066-06.
The VAULT development was supported by the Office of Naval Research
(task area SP033-02-43) and NASA (defense procurement request S-84002F).
NR 21
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U1 0
U2 0
PU EDP SCIENCES S A
PI LES ULIS CEDEX A
PA 17, AVE DU HOGGAR, PA COURTABOEUF, BP 112, F-91944 LES ULIS CEDEX A,
FRANCE
SN 0004-6361
J9 ASTRON ASTROPHYS
JI Astron. Astrophys.
PD JUN
PY 2009
VL 499
IS 3
BP 917
EP 921
DI 10.1051/0004-6361/200810710
PG 5
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 455BK
UT WOS:000266730600032
ER
PT J
AU Atwood, WB
Abdo, AA
Ackermann, M
Althouse, W
Anderson, B
Axelsson, M
Baldini, L
Ballet, J
Band, DL
Barbiellini, G
Bartelt, J
Bastieri, D
Baughman, BM
Bechtol, K
Bederede, D
Bellardi, F
Bellazzini, R
Berenji, B
Bignami, GF
Bisello, D
Bissaldi, E
Blandford, RD
Bloom, ED
Bogart, JR
Bonamente, E
Bonnell, J
Borgland, AW
Bouvier, A
Bregeon, J
Brez, A
Brigida, M
Bruel, P
Burnett, TH
Busetto, G
Caliandro, GA
Cameron, RA
Caraveo, PA
Carius, S
Carlson, P
Casandjian, JM
Cavazzuti, E
Ceccanti, M
Cecchi, C
Charles, E
Chekhtman, A
Cheung, CC
Chiang, J
Chipaux, R
Cillis, AN
Ciprini, S
Claus, R
Cohen-Tanugi, J
Condamoor, S
Conrad, J
Corbet, R
Corucci, L
Costamante, L
Cutini, S
Davis, DS
Decotigny, D
DeKlotz, M
Dermer, CD
De Angelis, A
Digel, SW
Silva, EDCE
Drell, PS
Dubois, R
Dumora, D
Edmonds, Y
Fabiani, D
Farnier, C
Favuzzi, C
Flath, DL
Fleury, P
Focke, WB
Funk, S
Fusco, P
Gargano, F
Gasparrini, D
Gehrels, N
Gentit, FX
Germani, S
Giebels, B
Giglietto, N
Giommi, P
Giordano, F
Glanzman, T
Godfrey, G
Grenier, IA
Grondin, MH
Grove, JE
Guillemot, L
Guiriec, S
Haller, G
Harding, AK
Hart, PA
Hays, E
Healey, SE
Hirayama, M
Hjalmarsdotter, L
Horn, R
Hughes, RE
Johannesson, G
Johansson, G
Johnson, AS
Johnson, RP
Johnson, TJ
Johnson, WN
Kamae, T
Katagiri, H
Kataoka, J
Kavelaars, A
Kawai, N
Kelly, H
Kerr, M
Klamra, W
Knodlseder, J
Kocian, ML
Komin, N
Kuehn, F
Kuss, M
Landriu, D
Latronico, L
Lee, B
Lee, SH
Lemoine-Goumard, M
Lionetto, AM
Longo, F
Loparco, F
Lott, B
Lovellette, MN
Lubrano, P
Madejski, GM
Makeev, A
Marangelli, B
Massai, MM
Mazziotta, MN
McEnery, JE
Menon, N
Meurer, C
Michelson, PF
Minuti, M
Mirizzi, N
Mitthumsiri, W
Mizuno, T
Moiseev, AA
Monte, C
Monzani, ME
Moretti, E
Morselli, A
Moskalenko, IV
Murgia, S
Nakamori, T
Nishino, S
Nolan, PL
Norris, JP
Nuss, E
Ohno, M
Ohsugi, T
Omodei, N
Orlando, E
Ormes, JF
Paccagnella, A
Paneque, D
Panetta, JH
Parent, D
Pearce, M
Pepe, M
Perazzo, A
Pesce-Rollins, M
Picozza, P
Pieri, L
Pinchera, M
Piron, F
Porter, TA
Poupard, L
Raino, S
Rando, R
Rapposelli, E
Razzano, M
Reimer, A
Reimer, O
Reposeur, T
Reyes, LC
Ritz, S
Rochester, LS
Rodriguez, AY
Romani, RW
Roth, M
Russell, JJ
Ryde, F
Sabatini, S
Sadrozinski, HFW
Sanchez, D
Sander, A
Sapozhnikov, L
Parkinson, PMS
Scargle, JD
Schalk, TL
Scolieri, G
Sgro, C
Share, GH
Shaw, M
Shimokawabe, T
Shrader, C
Sierpowska-Bartosik, A
Siskind, EJ
Smith, DA
Smith, PD
Spandre, G
Spinelli, P
Starck, JL
Stephens, TE
Strickman, MS
Strong, AW
Suson, DJ
Tajima, H
Takahashi, H
Takahashi, T
Tanaka, T
Tenze, A
Tether, S
Thayer, JB
Thayer, JG
Thompson, DJ
Tibaldo, L
Tibolla, O
Torres, DF
Tosti, G
Tramacere, A
Turri, M
Usher, TL
Vilchez, N
Vitale, V
Wang, P
Watters, K
Winer, BL
Wood, KS
Ylinen, T
Ziegler, M
AF Atwood, W. B.
Abdo, A. A.
Ackermann, M.
Althouse, W.
Anderson, B.
Axelsson, M.
Baldini, L.
Ballet, J.
Band, D. L.
Barbiellini, G.
Bartelt, J.
Bastieri, D.
Baughman, B. M.
Bechtol, K.
Bederede, D.
Bellardi, F.
Bellazzini, R.
Berenji, B.
Bignami, G. F.
Bisello, D.
Bissaldi, E.
Blandford, R. D.
Bloom, E. D.
Bogart, J. R.
Bonamente, E.
Bonnell, J.
Borgland, A. W.
Bouvier, A.
Bregeon, J.
Brez, A.
Brigida, M.
Bruel, P.
Burnett, T. H.
Busetto, G.
Caliandro, G. A.
Cameron, R. A.
Caraveo, P. A.
Carius, S.
Carlson, P.
Casandjian, J. M.
Cavazzuti, E.
Ceccanti, M.
Cecchi, C.
Charles, E.
Chekhtman, A.
Cheung, C. C.
Chiang, J.
Chipaux, R.
Cillis, A. N.
Ciprini, S.
Claus, R.
Cohen-Tanugi, J.
Condamoor, S.
Conrad, J.
Corbet, R.
Corucci, L.
Costamante, L.
Cutini, S.
Davis, D. S.
Decotigny, D.
DeKlotz, M.
Dermer, C. D.
De Angelis, A.
Digel, S. W.
Silva, E. Do Couto E.
Drell, P. S.
Dubois, R.
Dumora, D.
Edmonds, Y.
Fabiani, D.
Farnier, C.
Favuzzi, C.
Flath, D. L.
Fleury, P.
Focke, W. B.
Funk, S.
Fusco, P.
Gargano, F.
Gasparrini, D.
Gehrels, N.
Gentit, F. -X.
Germani, S.
Giebels, B.
Giglietto, N.
Giommi, P.
Giordano, F.
Glanzman, T.
Godfrey, G.
Grenier, I. A.
Grondin, M. -H.
Grove, J. E.
Guillemot, L.
Guiriec, S.
Haller, G.
Harding, A. K.
Hart, P. A.
Hays, E.
Healey, S. E.
Hirayama, M.
Hjalmarsdotter, L.
Horn, R.
Hughes, R. E.
Johannesson, G.
Johansson, G.
Johnson, A. S.
Johnson, R. P.
Johnson, T. J.
Johnson, W. N.
Kamae, T.
Katagiri, H.
Kataoka, J.
Kavelaars, A.
Kawai, N.
Kelly, H.
Kerr, M.
Klamra, W.
Knoedlseder, J.
Kocian, M. L.
Komin, N.
Kuehn, F.
Kuss, M.
Landriu, D.
Latronico, L.
Lee, B.
Lee, S. -H.
Lemoine-Goumard, M.
Lionetto, A. M.
Longo, F.
Loparco, F.
Lott, B.
Lovellette, M. N.
Lubrano, P.
Madejski, G. M.
Makeev, A.
Marangelli, B.
Massai, M. M.
Mazziotta, M. N.
McEnery, J. E.
Menon, N.
Meurer, C.
Michelson, P. F.
Minuti, M.
Mirizzi, N.
Mitthumsiri, W.
Mizuno, T.
Moiseev, A. A.
Monte, C.
Monzani, M. E.
Moretti, E.
Morselli, A.
Moskalenko, I. V.
Murgia, S.
Nakamori, T.
Nishino, S.
Nolan, P. L.
Norris, J. P.
Nuss, E.
Ohno, M.
Ohsugi, T.
Omodei, N.
Orlando, E.
Ormes, J. F.
Paccagnella, A.
Paneque, D.
Panetta, J. H.
Parent, D.
Pearce, M.
Pepe, M.
Perazzo, A.
Pesce-Rollins, M.
Picozza, P.
Pieri, L.
Pinchera, M.
Piron, F.
Porter, T. A.
Poupard, L.
Raino, S.
Rando, R.
Rapposelli, E.
Razzano, M.
Reimer, A.
Reimer, O.
Reposeur, T.
Reyes, L. C.
Ritz, S.
Rochester, L. S.
Rodriguez, A. Y.
Romani, R. W.
Roth, M.
Russell, J. J.
Ryde, F.
Sabatini, S.
Sadrozinski, H. F. -W.
Sanchez, D.
Sander, A.
Sapozhnikov, L.
Parkinson, P. M. Saz
Scargle, J. D.
Schalk, T. L.
Scolieri, G.
Sgro, C.
Share, G. H.
Shaw, M.
Shimokawabe, T.
Shrader, C.
Sierpowska-Bartosik, A.
Siskind, E. J.
Smith, D. A.
Smith, P. D.
Spandre, G.
Spinelli, P.
Starck, J. -L.
Stephens, T. E.
Strickman, M. S.
Strong, A. W.
Suson, D. J.
Tajima, H.
Takahashi, H.
Takahashi, T.
Tanaka, T.
Tenze, A.
Tether, S.
Thayer, J. B.
Thayer, J. G.
Thompson, D. J.
Tibaldo, L.
Tibolla, O.
Torres, D. F.
Tosti, G.
Tramacere, A.
Turri, M.
Usher, T. L.
Vilchez, N.
Vitale, V.
Wang, P.
Watters, K.
Winer, B. L.
Wood, K. S.
Ylinen, T.
Ziegler, M.
TI THE LARGE AREA TELESCOPE ON THE FERMI GAMMA-RAY SPACE TELESCOPE MISSION
SO ASTROPHYSICAL JOURNAL
LA English
DT Review
DE cosmic rays; galaxies: active; Galaxy: general; gamma rays:
observations; Sun: X-rays, gamma rays; telescopes
ID EXTRAGALACTIC BACKGROUND LIGHT; VERY-HIGH-ENERGY; TIME-DIFFERENCING
TECHNIQUE; INVERSE COMPTON-SCATTERING; FLIGHT ENGINEERING MODEL; PROBING
GALAXY FORMATION; PRIMORDIAL BLACK-HOLES; DARK-MATTER; EGRET DATA; X-RAY
AB The Large Area Telescope (Fermi/LAT, hereafter LAT), the primary instrument on the Fermi Gamma-ray Space Telescope (Fermi) mission, is an imaging, wide field-of-view (FoV), high-energy gamma-ray telescope, covering the energy range from below 20 MeV to more than 300 GeV. The LAT was built by an international collaboration with contributions from space agencies, high-energy particle physics institutes, and universities in France, Italy, Japan, Sweden, and the United States. This paper describes the LAT, its preflight expected performance, and summarizes the key science objectives that will be addressed. On-orbit performance will be presented in detail in a subsequent paper. The LAT is a pair-conversion telescope with a precision tracker and calorimeter, each consisting of a 4 x 4 array of 16 modules, a segmented anticoincidence detector that covers the tracker array, and a programmable trigger and data acquisition system. Each tracker module has a vertical stack of 18 (x, y) tracking planes, including two layers (x and y) of single-sided silicon strip detectors and high-Z converter material (tungsten) per tray. Every calorimeter module has 96 CsI(Tl) crystals, arranged in an eight-layer hodoscopic configuration with a total depth of 8.6 radiation lengths, giving both longitudinal and transverse information about the energy deposition pattern. The calorimeter's depth and segmentation enable the high-energy reach of the LAT and contribute significantly to background rejection. The aspect ratio of the tracker (height/width) is 0.4, allowing a large FoV (2.4 sr) and ensuring that most pair-conversion showers initiated in the tracker will pass into the calorimeter for energy measurement. Data obtained with the LAT are intended to (1) permit rapid notification of high-energy gamma-ray bursts and transients and facilitate monitoring of variable sources, (2) yield an extensive catalog of several thousand high-energy sources obtained from an all-sky survey, (3) measure spectra from 20 MeV to more than 50 GeV for several hundred sources, (4) localize point sources to 0.3-2 arcmin, (5) map and obtain spectra of extended sources such as SNRs, molecular clouds, and nearby galaxies, (6) measure the diffuse isotropic gamma-ray background up to TeV energies, and (7) explore the discovery space for dark matter.
C1 [Atwood, W. B.; Anderson, B.; Johnson, R. P.; Porter, T. A.; Sadrozinski, H. F. -W.; Parkinson, P. M. Saz; Schalk, T. L.; Ziegler, M.] Univ Calif Santa Cruz, Santa Cruz Inst Particle Phys, Dept Phys, Santa Cruz, CA 95064 USA.
[Atwood, W. B.; Anderson, B.; Johnson, R. P.; Porter, T. A.; Sadrozinski, H. F. -W.; Parkinson, P. M. Saz; Schalk, T. L.; Ziegler, M.] Univ Calif Santa Cruz, Dept Astron & Astrophys, Santa Cruz, CA 95064 USA.
[Abdo, A. A.; Chekhtman, A.; Dermer, C. D.; Grove, J. E.; Johnson, W. N.; Makeev, A.; Share, G. H.; Strickman, M. S.; Wood, K. S.] USN, Res Lab, Div Space Sci, Washington, DC 20375 USA.
[Ackermann, M.; Althouse, W.; Bartelt, J.; Bechtol, K.; Berenji, B.; Blandford, R. D.; Bloom, E. D.; Bogart, J. R.; Borgland, A. W.; Bouvier, A.; Cameron, R. A.; Charles, E.; Chiang, J.; Claus, R.; Condamoor, S.; Costamante, L.; Digel, S. W.; Silva, E. Do Couto E.; Drell, P. S.; Dubois, R.; Edmonds, Y.; Flath, D. L.; Focke, W. B.; Funk, S.; Glanzman, T.; Godfrey, G.; Haller, G.; Hart, P. A.; Healey, S. E.; Johannesson, G.; Johnson, A. S.; Kamae, T.; Kavelaars, A.; Kelly, H.; Kocian, M. L.; Lee, S. -H.; Madejski, G. M.; Michelson, P. F.; Mitthumsiri, W.; Monzani, M. E.; Moskalenko, I. V.; Murgia, S.; Nolan, P. L.; Panetta, J. H.; Perazzo, A.; Reimer, A.; Reimer, O.; Rochester, L. S.; Romani, R. W.; Russell, J. J.; Sapozhnikov, L.; Shaw, M.; Tajima, H.; Tanaka, T.; Tether, S.; Thayer, J. B.; Thayer, J. G.; Tramacere, A.; Turri, M.; Usher, T. L.; Wang, P.; Watters, K.] Stanford Univ, WW Hansen Expt Phys Lab, Kavli Inst Particle Astrophys & Cosmol, Dept Phys, Stanford, CA 94305 USA.
[Ackermann, M.; Althouse, W.; Bartelt, J.; Bechtol, K.; Berenji, B.; Blandford, R. D.; Bloom, E. D.; Bogart, J. R.; Borgland, A. W.; Bouvier, A.; Cameron, R. A.; Charles, E.; Chiang, J.; Claus, R.; Condamoor, S.; Costamante, L.; Digel, S. W.; Silva, E. Do Couto E.; Drell, P. S.; Dubois, R.; Edmonds, Y.; Flath, D. L.; Focke, W. B.; Funk, S.; Glanzman, T.; Godfrey, G.; Haller, G.; Hart, P. A.; Healey, S. E.; Johannesson, G.; Johnson, A. S.; Kamae, T.; Kavelaars, A.; Kelly, H.; Kocian, M. L.; Lee, S. -H.; Madejski, G. M.; Michelson, P. F.; Mitthumsiri, W.; Monzani, M. E.; Moskalenko, I. V.; Murgia, S.; Nolan, P. L.; Panetta, J. H.; Perazzo, A.; Reimer, A.; Reimer, O.; Rochester, L. S.; Romani, R. W.; Russell, J. J.; Sapozhnikov, L.; Shaw, M.; Tajima, H.; Tanaka, T.; Tether, S.; Thayer, J. B.; Thayer, J. G.; Tramacere, A.; Turri, M.; Usher, T. L.; Wang, P.; Watters, K.] Stanford Univ, SLAC Natl Accelerator Lab, Stanford, CA 94305 USA.
[Axelsson, M.; Hjalmarsdotter, L.] Stockholm Observ, SE-10691 Stockholm, Sweden.
[Baldini, L.; Bellardi, F.; Bellazzini, R.; Bregeon, J.; Brez, A.; Ceccanti, M.; Corucci, L.; Fabiani, D.; Kuss, M.; Latronico, L.; Massai, M. M.; Menon, N.; Minuti, M.; Omodei, N.; Pesce-Rollins, M.; Pinchera, M.; Rapposelli, E.; Razzano, M.; Sgro, C.; Spandre, G.; Tenze, A.] Ist Nazl Fis Nucl, Sez Pisa, I-56127 Pisa, Italy.
[Ballet, J.; Casandjian, J. M.; Grenier, I. A.; Komin, N.; Landriu, D.; Poupard, L.; Starck, J. -L.] Univ Paris Diderot, Lab AIM, CEA IRFU CNRS, Serv Astrophys,CEA Saclay, F-91191 Gif Sur Yvette, France.
[Band, D. L.; Moiseev, A. A.; Shrader, C.] NASA, Goddard Space Flight Ctr, CRESST, Greenbelt, MD 20771 USA.
[Barbiellini, G.; Longo, F.; Moretti, E.] Ist Nazl Fis Nucl, Sez Trieste, I-34127 Trieste, Italy.
[Barbiellini, G.; Longo, F.; Moretti, E.] Univ Trieste, Dipartmento Fis, I-34127 Trieste, Italy.
[Bastieri, D.; Bisello, D.; Busetto, G.; Paccagnella, A.; Pieri, L.; Rando, R.; Tibaldo, L.] Ist Nazl Fis Nucl, Sez Padova, I-35131 Padua, Italy.
[Bastieri, D.; Bisello, D.; Busetto, G.; Rando, R.; Tibaldo, L.] Univ Padua, Dipartimento Fis G Galilei, I-35131 Padua, Italy.
[Baughman, B. M.; Hughes, R. E.; Kuehn, F.; Sander, A.; Smith, P. D.; Winer, B. L.] Ohio State Univ, Dept Phys, Ctr Cosmol & Astroparticle Phys, Columbus, OH 43210 USA.
[Bederede, D.] CEA Saclay, IRFU Dir, F-91191 Gif Sur Yvette, France.
[Bignami, G. F.] IUSS, I-27100 Pavia, Italy.
[Bissaldi, E.; Orlando, E.; Strong, A. W.] Max Planck Inst Extraterr Phys, D-85748 Garching, Germany.
[Bonamente, E.; Cecchi, C.; Ciprini, S.; Germani, S.; Lubrano, P.; Pepe, M.; Tosti, G.] Ist Nazl Fis Nucl, Sez Perugia, I-60123 Perugia, Italy.
[Bonamente, E.; Cecchi, C.; Ciprini, S.; Germani, S.; Lubrano, P.; Pepe, M.; Tosti, G.] Univ Perugia, Dipartimento Fis, I-06123 Perugia, Italy.
[Brigida, M.; Caliandro, G. A.; Favuzzi, C.; Fusco, P.; Giglietto, N.; Giordano, F.; Loparco, F.; Marangelli, B.; Mirizzi, N.; Monte, C.; Raino, S.; Spinelli, P.] Univ Politecn Bari, Dipartimento Fis M Merlin, I-70126 Bari, Italy.
[Brigida, M.; Caliandro, G. A.; Favuzzi, C.; Fusco, P.; Gargano, F.; Giglietto, N.; Giordano, F.; Loparco, F.; Lovellette, M. N.; Marangelli, B.; Mazziotta, M. N.; Mirizzi, N.; Monte, C.; Raino, S.; Spinelli, P.] Ist Nazl Fis Nucl, Sez Bari, I-70126 Bari, Italy.
[Bruel, P.; Decotigny, D.; Fleury, P.; Giebels, B.; Sanchez, D.] Ecole Polytech, CNRS, Lab Leprince Ringuet, IN2P3, F-91128 Palaiseau, France.
[Burnett, T. H.; Kerr, M.; Roth, M.] Univ Washington, Dept Phys, Seattle, WA 98195 USA.
[Caraveo, P. A.] Ist Astrofis Spaziale & Fis Cosm, INAF, I-20133 Milan, Italy.
[Carius, S.; Johansson, G.; Ylinen, T.] Univ Kalmar, Sch Pure & Appl Nat Sci, SE-39182 Kalmar, Sweden.
[Carlson, P.; Conrad, J.; Klamra, W.; Pearce, M.; Ryde, F.; Ylinen, T.] Royal Inst Technol, KTH, Dept Phys, SE-10691 Stockholm, Sweden.
[Cavazzuti, E.; Cutini, S.; Gasparrini, D.; Giommi, P.] Sci Data Ctr, ASI, I-00044 Frascati, Italy.
[Chekhtman, A.; Makeev, A.] George Mason Univ, Fairfax, VA 22030 USA.
[Chipaux, R.; Cohen-Tanugi, J.; Farnier, C.; Guiriec, S.; Komin, N.; Nuss, E.; Piron, F.] CEA Saclay, IRFU SEDI, F-91191 Gif Sur Yvette, France.
[Cohen-Tanugi, J.; Farnier, C.; Guiriec, S.; Komin, N.; Nuss, E.; Piron, F.] Univ Montpellier 2, Lab Phys Theor & Astroparticules, CNRS, IN2P3, Montpellier, France.
[Conrad, J.; Meurer, C.] Stockholm Univ, Dept Phys, SE-10691 Stockholm, Sweden.
[Hirayama, M.] Univ Maryland, Ctr Space Sci & Technol, Baltimore, MD 21250 USA.
[DeKlotz, M.; Horn, R.; Menon, N.] Stellar Solut Inc, Palo Alto, CA 94306 USA.
[De Angelis, A.] Univ Udine, Dipartimento Fis, I-33100 Udine, Italy.
[De Angelis, A.] Ist Nazl Fis Nucl, Sez Trieste, Grp Collegato Udine, I-33100 Udine, Italy.
[Dumora, D.; Grondin, M. -H.; Guillemot, L.; Lemoine-Goumard, M.; Lott, B.; Parent, D.; Reposeur, T.; Smith, D. A.] CEN Bordeaux Gradignan, CNRS IN2P3, UMR 5797, F-33175 Gradignan, France.
[Dumora, D.; Grondin, M. -H.; Guillemot, L.; Lemoine-Goumard, M.; Lott, B.; Parent, D.; Reposeur, T.; Smith, D. A.] Univ Bordeaux, Ctr Etud Nucl Bordeaux Gradignan, UMR 5797, F-33175 Gradignan, France.
[Johnson, T. J.; Ritz, S.] Univ Maryland, College Pk, MD 20742 USA.
[Gentit, F. -X.] CEA Saclay, IRFU, Serv Phys Particules, F-91191 Gif Sur Yvette, France.
[Katagiri, H.; Mizuno, T.; Nishino, S.; Ohsugi, T.; Takahashi, H.] Hiroshima Univ, Dept Phys Sci, Higashihiroshima 7398526, Japan.
[Katagiri, H.; Mizuno, T.; Nishino, S.; Ohsugi, T.; Takahashi, H.] Hiroshima Univ, Hiroshima Astrophys Sci Ctr, Higashihiroshima 7398526, Japan.
[Kataoka, J.; Kawai, N.; Nakamori, T.; Shimokawabe, T.] Tokyo Inst Technol, Dept Phys, Tokyo 1528551, Japan.
[Kawai, N.] RIKEN, Inst Phys & Chem Res, Cosm Radiat Lab, Saitama 3510198, Japan.
[Knoedlseder, J.; Vilchez, N.] CNRS UPS, Ctr Etud Spatiale Rayonnements, F-31028 Toulouse 4, France.
[Lee, B.] Orbital Network Engn, Cupertino, CA 95014 USA.
[Lionetto, A. M.; Morselli, A.; Picozza, P.; Sabatini, S.; Vitale, V.] Ist Nazl Fis Nucl, Sez Roma Tor Vergata, I-00133 Rome, Italy.
[Lionetto, A. M.; Morselli, A.; Picozza, P.; Sabatini, S.; Vitale, V.] Univ Roma Tor Vergata, Dipartimento Fis, I-00133 Rome, Italy.
[Norris, J. P.; Ormes, J. F.] Univ Denver, Dept Phys & Astron, Denver, CO 80208 USA.
[Ohno, M.; Takahashi, T.] Inst Space & Astronaut Sci, JAXA, Sagamihara, Kanagawa 2298510, Japan.
[Paccagnella, A.] Univ Padua, Dipartimento Ingn Informaz, I-35131 Padua, Italy.
[Reyes, L. C.] Univ Chicago, Kavli Inst Cosmol Phys, Chicago, IL 60637 USA.
[Rodriguez, A. Y.; Sierpowska-Bartosik, A.; Torres, D. F.] Inst Ciencies Espai, IEEC CSIC, Barcelona 08193, Spain.
[Scargle, J. D.] NASA, Ames Res Ctr, Div Space Sci, Moffett Field, CA 94035 USA.
[Scolieri, G.] Ist Nazl Fis Nucl, I-06123 Perugia, Italy.
[Share, G. H.] Praxis Inc, Alexandria, VA 22303 USA.
[Siskind, E. J.] NYCB Real Time Comp Inc, Lattingtown, NY 11560 USA.
[Suson, D. J.] Purdue Univ Calumet, Dept Chem & Phys, Hammond, IN 46323 USA.
[Tibolla, O.] Heidelberg Univ, D-69117 Heidelberg, Germany.
[Torres, D. F.] ICREA, Barcelona, Spain.
[Tramacere, A.] CIFS, I-10133 Turin, Italy.
RP Michelson, PF (reprint author), Univ Calif Santa Cruz, Santa Cruz Inst Particle Phys, Dept Phys, Santa Cruz, CA 95064 USA.
EM peterm@stanford.edu
RI Komin, Nukri/J-6781-2015; Hays, Elizabeth/D-3257-2012; Johnson,
Neil/G-3309-2014; Reimer, Olaf/A-3117-2013; Funk, Stefan/B-7629-2015;
Gargano, Fabio/O-8934-2015; Johannesson, Gudlaugur/O-8741-2015; Loparco,
Francesco/O-8847-2015; Moskalenko, Igor/A-1301-2007; Mazziotta, Mario
/O-8867-2015; Sgro, Carmelo/K-3395-2016; Bissaldi,
Elisabetta/K-7911-2016; Torres, Diego/O-9422-2016; Starck,
Jean-Luc/D-9467-2011; Thompson, David/D-2939-2012; Harding,
Alice/D-3160-2012; Gehrels, Neil/D-2971-2012; McEnery,
Julie/D-6612-2012; Chipaux, Remi/G-1145-2010; Baldini, Luca/E-5396-2012;
lubrano, pasquale/F-7269-2012; Morselli, Aldo/G-6769-2011; Nolan,
Patrick/A-5582-2009; Kuss, Michael/H-8959-2012; giglietto,
nicola/I-8951-2012; Tosti, Gino/E-9976-2013; Rando, Riccardo/M-7179-2013
OI Berenji, Bijan/0000-0002-4551-772X; Gasparrini,
Dario/0000-0002-5064-9495; Tramacere, Andrea/0000-0002-8186-3793;
Baldini, Luca/0000-0002-9785-7726; Pesce-Rollins,
Melissa/0000-0003-1790-8018; Axelsson, Magnus/0000-0003-4378-8785;
Moretti, Elena/0000-0001-5477-9097; Cutini, Sara/0000-0002-1271-2924;
Sgro', Carmelo/0000-0001-5676-6214; Bignami,
Giovanni/0000-0001-9582-2450; Picozza, Piergiorgio/0000-0002-7986-3321;
Stephens, Thomas/0000-0003-3065-6871; SPINELLI,
Paolo/0000-0001-6688-8864; giommi, paolo/0000-0002-2265-5003; De
Angelis, Alessandro/0000-0002-3288-2517; Sabatini,
Sabina/0000-0003-2076-5767; Caraveo, Patrizia/0000-0003-2478-8018;
Komin, Nukri/0000-0003-3280-0582; Bastieri, Denis/0000-0002-6954-8862;
Omodei, Nicola/0000-0002-5448-7577; Reimer, Olaf/0000-0001-6953-1385;
Funk, Stefan/0000-0002-2012-0080; Gargano, Fabio/0000-0002-5055-6395;
Johannesson, Gudlaugur/0000-0003-1458-7036; Loparco,
Francesco/0000-0002-1173-5673; Moskalenko, Igor/0000-0001-6141-458X;
Mazziotta, Mario /0000-0001-9325-4672; Bissaldi,
Elisabetta/0000-0001-9935-8106; Torres, Diego/0000-0002-1522-9065;
Rando, Riccardo/0000-0001-6992-818X; Starck,
Jean-Luc/0000-0003-2177-7794; Thompson, David/0000-0001-5217-9135;
lubrano, pasquale/0000-0003-0221-4806; Morselli,
Aldo/0000-0002-7704-9553; giglietto, nicola/0000-0002-9021-2888;
NR 203
TC 1443
Z9 1454
U1 31
U2 126
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 JUN 1
PY 2009
VL 697
IS 2
BP 1071
EP 1102
DI 10.1088/0004-637X/697/2/1071
PG 32
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 446YT
UT WOS:000266159500012
ER
PT J
AU Clarke, TE
Blanton, EL
Sarazin, CL
Anderson, LD
Gopal-Krishna
Douglass, EM
Kassim, NE
AF Clarke, T. E.
Blanton, E. L.
Sarazin, C. L.
Anderson, L. D.
Gopal-Krishna
Douglass, E. M.
Kassim, N. E.
TI TRACING MULTIPLE GENERATIONS OF ACTIVE GALACTIC NUCLEUS FEEDBACK IN THE
CORE OF ABELL 262
SO ASTROPHYSICAL JOURNAL
LA English
DT Article
DE cooling flows; galaxies: clusters: general; galaxies: clusters:
individual (Abell 262); intergalactic medium; radio continuum: galaxies;
X-rays: galaxies: clusters
ID X-RAY CAVITIES; DEEP CHANDRA OBSERVATION; CENTRAL CLUSTER GALAXIES;
RADIO-SOURCES; PERSEUS CLUSTER; XMM-NEWTON; COOLING FLOWS; INTRACLUSTER
MEDIUM; STAR-FORMATION; BLACK-HOLE
AB We present new radio and X-ray observations of Abell 262. The X-ray residual image provides the first evidence of an X-ray tunnel in this system while the radio data reveal that the central radio source is more than three times larger than previously known. We find that the well-known cluster-center S-shaped radio source B2 0149+35 is surrounded by extended emission to the east and southwest. The south-western extension is cospatial with the X-ray tunnel seen in our new Chandra images while the eastern extension shows three clumps of emission with the innermost coincident with a faint X-ray cavity. The outer two eastern radio extensions are coincident with a newly detected X-ray depression. We use the projected separation of the emission regions to estimate a lower limit of tau(rep) = 28 Myr to the outburst repetition timescale of the central active galactic nucleus (AGN). The total energy input into the cluster over multiple outburst episodes is estimated to be 2.2 x 10(58) erg, more than an order of magnitude larger than previously thought. The total AGN energy output determined from our new observations shows that the source should be capable of offsetting radiative cooling over several outburst episodes.
C1 [Clarke, T. E.; Kassim, N. E.] USN, Res Lab, Washington, DC 20375 USA.
[Clarke, T. E.] Interferometrics Inc, Herndon, VA 20171 USA.
[Blanton, E. L.; Anderson, L. D.; Douglass, E. M.] Boston Univ, Inst Astrophys Res, Boston, MA 02215 USA.
[Sarazin, C. L.] Univ Virginia, Dept Astron, Charlottesville, VA 22904 USA.
[Gopal-Krishna] NCRA TIFR, Pune 411007, Maharashtra, India.
RP Clarke, TE (reprint author), USN, Res Lab, 4555 Overlook Ave SW,Code 7213, Washington, DC 20375 USA.
RI Blanton, Elizabeth/H-4501-2014
NR 66
TC 18
Z9 18
U1 0
U2 2
PU IOP PUBLISHING LTD
PI BRISTOL
PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND
SN 0004-637X
J9 ASTROPHYS J
JI Astrophys. J.
PD JUN 1
PY 2009
VL 697
IS 2
BP 1481
EP 1492
DI 10.1088/0004-637X/697/2/1481
PG 12
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 446YT
UT WOS:000266159500043
ER
PT J
AU Marsh, MS
Walsh, RW
Plunkett, S
AF Marsh, M. S.
Walsh, R. W.
Plunkett, S.
TI THREE-DIMENSIONAL CORONAL SLOW MODES: TOWARD THREE-DIMENSIONAL
SEISMOLOGY
SO ASTROPHYSICAL JOURNAL
LA English
DT Article
DE MHD; stars: oscillations; Sun: atmospheric motions; Sun: corona; Sun:
oscillations; waves
ID LOOP OSCILLATIONS; MAGNETIC-FIELD; TRANSVERSE OSCILLATIONS; WAVES;
TRACE; SUMER; BRIGHTENINGS; PROPAGATION; PARAMETERS; SPACECRAFT
AB On 2008 January 10, the twin Solar Terrestrial Relations Observatory A and B spacecraft conducted a high time cadence study of the solar corona with the Extreme-Ultraviolet Imager instruments with the aim of investigating coronal dynamics. Observations of the three-dimensional propagation of waves within active region coronal loops and a measurement of the true coronal slow mode speed are obtained. Intensity oscillations with a period of approximate to 12 minutes are observed to propagate outward from the base of a loop system, consistent with the slow magnetoacoustic mode. A novel analysis technique is applied to measure the wave phase velocity in the observations of the A and B spacecraft. These stereoscopic observations are used to infer the three-dimensional velocity vector of the wave propagation, with an inclination of 37 degrees +/- 6 degrees to the local normal and a magnitude of 132 +/- 9 and 132 +/- 11 km s(-1), giving the first measurement of the true coronal longitudinal slow mode speed, and an inferred temperature of 0.84 +/- 0.12 MK and 0.84 +/- 0.15 MK.
C1 [Marsh, M. S.; Walsh, R. W.] Univ Cent Lancashire, Jeremiah Horrocks Inst Astrophys & Supercomp, Preston PR1 2HE, Lancs, England.
[Plunkett, S.] USN, Res Lab, Washington, DC 20375 USA.
RP Marsh, MS (reprint author), Univ Cent Lancashire, Jeremiah Horrocks Inst Astrophys & Supercomp, Preston PR1 2HE, Lancs, England.
EM mike.s.marsh@gmail.com
RI Marsh, Mike/I-3920-2012
OI Marsh, Mike/0000-0003-2765-0874
FU Science and Technology Facilities Council (STFC) [ST/F002769/1]
FX This research is supported by the Science and Technology Facilities
Council (STFC) under grant ST/F002769/1. The STEREO/SECCHI data used
here are produced by an international consortium of the Naval Research
Laboratory (USA), Lockheed Martin Solar and Astrophysics Lab (USA), NASA
Goddard Space Flight Center (USA) Rutherford Appleton Laboratory (UK),
University of Birmingham (UK), Max-Planck-Institut fur
Sonnensystemforschung (Germany), Centre Spatiale de Liege (Belgium),
Institut d'Optique Theorique et Appliquee (France), Institut
d'Astrophysique Spatiale (France). Tutorials for the Ashwanden
stereoscopic reconstruction software are available at
http://www.lmsal.com/~aschwand/stereo/stereo_soft/software2. html. M. S.
M. acknowledges useful discussion with V. M. Nakariakov and the
encouragement of L. E. Pickard.
NR 29
TC 49
Z9 49
U1 0
U2 3
PU IOP PUBLISHING LTD
PI BRISTOL
PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND
SN 0004-637X
J9 ASTROPHYS J
JI Astrophys. J.
PD JUN 1
PY 2009
VL 697
IS 2
BP 1674
EP 1680
DI 10.1088/0004-637X/697/2/1674
PG 7
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 446YT
UT WOS:000266159500055
ER
PT J
AU Lynch, BJ
Antiochos, SK
Li, Y
Luhmann, JG
DeVore, CR
AF Lynch, B. J.
Antiochos, S. K.
Li, Y.
Luhmann, J. G.
DeVore, C. R.
TI ROTATION OF CORONAL MASS EJECTIONS DURING ERUPTION
SO ASTROPHYSICAL JOURNAL
LA English
DT Article
DE Sun: corona; Sun: coronal mass ejections (CMEs); Sun: magnetic fields
ID MAGNETIC-FLUX TUBES; SOLAR-WIND; KINK INSTABILITY; ROPE STRUCTURE;
NEUTRAL LINES; ACTIVE-REGION; CLOUDS; FIELDS; PROMINENCES; FILAMENTS
AB Understanding the connection between coronal mass ejections (CMEs) and their interplanetary counterparts (ICMEs) is one of the most important problems in solar-terrestrial physics. We calculate the rotation of erupting field structures predicted by numerical simulations of CME initiation via the magnetic breakout model. In this model, the initial potential magnetic field has a multipolar topology and the system is driven by imposing a shear flow at the photospheric boundary. Our results yield insight on how to connect solar observations of the orientation of the filament or polarity inversion line (PIL) in the CME source region, the orientation of the CME axis as inferred from coronagraph images, and the ICME flux rope orientation obtained from in situ measurements. We present the results of two numerical simulations that differ only in the direction of the applied shearing motions (i.e., the handedness of the sheared-arcade systems and their resulting CME fields). In both simulations, eruptive flare reconnection occurs underneath the rapidly expanding sheared fields transforming the ejecta fields into three-dimensional flux rope structures. As the erupting flux ropes propagate through the low corona (from 2 to 4 R(circle dot)) the right-handed breakout flux rope rotates clockwise and the left-handed breakout flux rope rotates counterclockwise, in agreement with recent observations of the rotation of erupting filaments. We find that by 3.5 R(circle dot) the average rotation angle between the flux rope axes and the active region PIL is approximately 50 degrees. We discuss the implications of these results for predicting, from the observed chirality of the pre-eruption filament and/or other properties of the CME source region, the direction and amount of rotation that magnetic flux rope structures will experience during eruption. We also discuss the implications of our results for CME initiation models.
C1 [Lynch, B. J.; Li, Y.; Luhmann, J. G.] Univ Calif Berkeley, Space Sci Lab, Berkeley, CA 94720 USA.
[Antiochos, S. K.] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA.
[DeVore, C. R.] USN, Res Lab, Computat Phys & Fluid Dynam Lab, Washington, DC 20375 USA.
RP Lynch, BJ (reprint author), Univ Calif Berkeley, Space Sci Lab, Berkeley, CA 94720 USA.
EM blynch@ssl.berkeley.edu; spiro.k.antiochos@nasa.gov;
yanli@ssl.berkeley.edu; jgluhman@ssl.berkeley.edu;
devore@lcp.nrl.navy.mil
RI Antiochos, Spiro/D-4668-2012; Lynch, Benjamin/B-1300-2013; DeVore,
C/A-6067-2015;
OI Antiochos, Spiro/0000-0003-0176-4312; DeVore, C/0000-0002-4668-591X;
Lynch, Benjamin/0000-0001-6886-855X
FU NSF [ATM-0621725]; NASA [NNX08AJ04G]; NASA HTP; SRT Programs; Office of
Naval Research (ONR); SSL/UCB participation in the Center for Integrated
Space-Weather Modeling (CISM) Collaboration
FX B. J. L. gratefully acknowledges grants NSF SHINE ATM-0621725 and NASA
HGI NNX08AJ04G. Additional support for this work comes from the NASA HTP
and SR&T Programs, the Office of Naval Research (ONR), and SSL/UCB
participation in the Center for Integrated Space-Weather Modeling (CISM)
Collaboration. The DoD High Performance Computing Modernization Program
provided resources at the ERDC major shared resource and NRL-DC
distributed computing centers for this research.
NR 71
TC 52
Z9 53
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 JUN 1
PY 2009
VL 697
IS 2
BP 1918
EP 1927
DI 10.1088/0004-637X/697/2/1918
PG 10
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 446YT
UT WOS:000266159500074
ER
PT J
AU Ko, YK
Doschek, GA
Warren, HP
Young, PR
AF Ko, Yuan-Kuen
Doschek, George A.
Warren, Harry P.
Young, Peter R.
TI HOT PLASMA IN NONFLARING ACTIVE REGIONS OBSERVED BY THE
EXTREME-ULTRAVIOLET IMAGING SPECTROMETER ON HINODE
SO ASTROPHYSICAL JOURNAL
LA English
DT Article
DE Sun: corona; Sun: UV radiation
ID EMISSION-LINES; NONTHERMAL VELOCITIES; ATOMIC DATABASE; SPECTRAL-LINES;
CORONAL LOOPS; SOLAR; TEMPERATURE; WAVELENGTHS; INTENSITIES; MECHANISMS
AB The Extreme-Ultraviolet Imaging Spectrometer (EIS) on the Hinode spacecraft obtains high-resolution spectra of the solar atmosphere in two wavelength ranges: 170-210 and 250-290 angstrom. These wavelength regions contain a wealth of emission lines covering temperature regions from the chromosphere/transition region (e. g., He II, Si VII) up to flare temperatures (Fe XXIII, Fe XXIV). Of particular interest for understanding coronal heating is a line of Ca XVII at 192.858 angstrom, formed near a temperature of 6 x 10(6) K. However, this line is blended with two Fe xi and six O V lines. In this paper we discuss a specific procedure to extract the Ca XVII line from the blend. We have performed this procedure on the raster data of five active regions (ARs) and a limb flare, and demonstrated that the Ca XVII line can be satisfactorily extracted from the blend if the Ca XVII flux contributes to at least similar to 10% of the blend. We show examples of the high-temperature corona depicted by the Ca XVII emission and find that the Ca XVII emission has three morphological features in these ARs: (1) "fat" medium-sized loops confined in a smaller space than the 1 million degree corona, (2) weaker, diffuse emission surrounding these loops that spread over the core of the AR, and (3) the locations of the strong Ca XVII loops are often weak in line emission formed from the 1 million degree plasma. We find that the emission measure ratio of the 6 million degree plasma relative to the cooler 1 million degree plasma in the core of the ARs, using the Ca XVII to Fe xi line intensity ratio as a proxy, can be as high as 10. Outside of the AR core where the 1 million degree loops are abundant, the ratio has an upper limit of about 0.5.
C1 [Ko, Yuan-Kuen; Doschek, George A.; Warren, Harry P.; Young, Peter R.] USN, Res Lab, Div Space Sci, Washington, DC 20375 USA.
[Young, Peter R.] George Mason Univ, Fairfax, VA 22030 USA.
RP Ko, YK (reprint author), USN, Res Lab, Div Space Sci, Washington, DC 20375 USA.
FU NASA Hinode program; NRL/ONR 6.1 basic research program; JAXA; NAOJ;
STFC; NASA; ESA (European Space Agency); NSC (Norway)
FX The authors acknowledge support from the NASA Hinode program, and the
NRL/ONR 6.1 basic research program. Y.-K.K. thanks M. Weber for the help
with the XRT temperature response functions. We thank the anonymous
referee for valuable comments that greatly improve this paper. Hinode is
a Japanese mission developed and launched by ISAS/JAXA, collaborating
with NAOJ as domestic partner, and NASA (USA) and STFC (UK) as
international partners. Scientific operation of the Hinode mission is
conducted by the Hinode science team organized at ISAS/JAXA. This team
mainly consists of scientists from institutes in the partner countries.
Support for the post-launch operation is provided by JAXA and NAOJ,
STFC, NASA, ESA (European Space Agency), and NSC (Norway). We are
grateful to the Hinode team for all their efforts in the design, build,
and operation of the mission. MPFIT is a public-domain IDL program
developed by C. B. Markwardt (http://www.physics.wisc.edu/similar to
craigm/idl/fitting.html).
NR 34
TC 27
Z9 27
U1 0
U2 2
PU IOP PUBLISHING LTD
PI BRISTOL
PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND
SN 0004-637X
J9 ASTROPHYS J
JI Astrophys. J.
PD JUN 1
PY 2009
VL 697
IS 2
BP 1956
EP 1970
DI 10.1088/0004-637X/697/2/1956
PG 15
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 446YT
UT WOS:000266159500079
ER
PT J
AU Hartman, JM
Watts, AL
Chakrabarty, D
AF Hartman, Jacob M.
Watts, Anna L.
Chakrabarty, Deepto
TI THE LUMINOSITY AND ENERGY DEPENDENCE OF PULSE PHASE LAGS IN THE
ACCRETION-POWERED MILLISECOND PULSAR SAX J1808.4-3658
SO ASTROPHYSICAL JOURNAL
LA English
DT Article
DE binaries: general; stars: individual (SAX J1808.4-3658); stars: neutron;
stars: rotation; X-rays: binaries; X-rays: stars
ID X-RAY PULSAR; PROPORTIONAL COUNTER ARRAY; TIMING-EXPLORER; IGR
J00291+5934; NEUTRON-STARS; WAVE-FORMS; HOT-SPOTS; DISK; BINARY;
SAX-J1808.4-3658
AB Soft phase lags, in which X-ray pulses in lower energy bands arrive later than pulses in higher energy bands, have been observed in nearly all accretion-powered millisecond pulsars, but their origin remains an open question. In a study of the 2.5 ms accretion-powered pulsar SAX J1808.4-3658, we report that the magnitude of these lags is strongly dependent on the accretion rate. During the brightest stage of the outbursts from this source, the lags increase in magnitude as the accretion rate drops; when the outbursts enter their dimmer flaring-tail stage, the relationship reverses. We evaluate this complex dependence in the context of two theoretical models for the lags, one relying on the scattering of photons by the accretion disk and the other invoking a two-component model for the photon emission. In both cases, the turnover suggests that we are observing the source transitioning into the "propeller" accretion regime.
C1 [Hartman, Jacob M.; Chakrabarty, Deepto] MIT, Kavli Inst Astrophys & Space Res, Cambridge, MA 02139 USA.
[Watts, Anna L.] Univ Amsterdam, Astron Inst Anton Pannekoek, NL-1098 SJ Amsterdam, Netherlands.
RP Hartman, JM (reprint author), USN, Res Lab, Code 7655, Washington, DC 20375 USA.
EM Jacob.Hartman@nrl.navy.mil
FU NASA
FX J.M.H. thanks the Max Planck Institut fur Astrophysik for hospitality
that facilitated the pursuit of this research. We also thank Lev
Titarchuk, Juri Poutanen, and J. Martin Laming for useful conversations.
This work was supported at MIT in part by NASA grants under the RXTE
Guest Observer Program.
NR 38
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PI BRISTOL
PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND
SN 0004-637X
J9 ASTROPHYS J
JI Astrophys. J.
PD JUN 1
PY 2009
VL 697
IS 2
BP 2102
EP 2107
DI 10.1088/0004-637X/697/2/2102
PG 6
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 446YT
UT WOS:000266159500088
ER
PT J
AU Blanton, EL
Randall, SW
Douglass, EM
Sarazin, CL
Clarke, TE
McNamara, BR
AF Blanton, E. L.
Randall, S. W.
Douglass, E. M.
Sarazin, C. L.
Clarke, T. E.
McNamara, B. R.
TI SHOCKS AND BUBBLES IN A DEEP CHANDRA OBSERVATION OF THE COOLING FLOW
CLUSTER ABELL 2052
SO ASTROPHYSICAL JOURNAL LETTERS
LA English
DT Article
DE cooling flows; galaxies: clusters: general; galaxies: clusters:
individual (A2052); intergalactic medium; radio continuum: galaxies;
X-rays: galaxies: clusters
ID RAY-EMITTING GAS; X-RAY; PERSEUS CLUSTER; VORONOI TESSELLATIONS;
INTRACLUSTER MEDIUM; GALAXY CLUSTERS; RADIO LOBES; HYDRA-A; ROSAT;
TEMPERATURE
AB We present results from a deep Chandra observation of Abell 2052. A2052 is a bright, nearby, cooling flow cluster, at a redshift of z = 0.035. Concentric surface brightness discontinuities are revealed in the cluster center, and these features are consistent with shocks driven by the active galactic nucleus (AGN), both with Mach numbers of approximately 1.2. The southern cavity in A2052 now appears to be split into two cavities with the southernmost cavity likely representing a ghost bubble from earlier radio activity. There also appears to be a ghost bubble present to the NW of the cluster center. The cycle time measured for the radio source is t approximate to 2 x 10(7) yr using either the shock separation or the rise time of the bubbles. The energy deposited by the radio source, including a combination of direct shock heating and heating by buoyantly rising bubbles inflated by the AGN, can offset the cooling in the core of the cluster.
C1 [Blanton, E. L.; Douglass, E. M.] Boston Univ, Inst Astrophys Res, Boston, MA 02215 USA.
[Randall, S. W.; McNamara, B. R.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA.
[Sarazin, C. L.] Univ Virginia, Dept Astron, Charlottesville, VA 22904 USA.
[Clarke, T. E.] USN, Res Lab, Washington, DC 20375 USA.
[Clarke, T. E.] Interferometrics Inc, Herndon, VA 20171 USA.
[McNamara, B. R.] Univ Waterloo, Dept Phys & Astron, Waterloo, ON N2L 2G1, Canada.
[McNamara, B. R.] Perimeter Inst Theoret Phys, Waterloo, ON N2L 2Y5, Canada.
RP Blanton, EL (reprint author), Boston Univ, Inst Astrophys Res, 725 Commonwealth Ave, Boston, MA 02215 USA.
EM eblanton@bu.edu; srandall@head.cfa.harvard.edu; emdoug@bu.edu;
sarazin@virginia.edu; tracy.clarke@nrl.navy.mil;
mcnamara@sciborg.uwaterloo.ca
RI Blanton, Elizabeth/H-4501-2014;
OI Randall, Scott/0000-0002-3984-4337
NR 29
TC 38
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U1 0
U2 1
PU IOP PUBLISHING LTD
PI BRISTOL
PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND
J9 ASTROPHYS J LETT
JI Astrophys. J. Lett.
PD JUN 1
PY 2009
VL 697
IS 2
BP L95
EP L98
DI 10.1088/0004-637X/697/2/L95
PG 4
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 445TG
UT WOS:000266073800005
ER
PT J
AU Abazajian, KN
Adelman-McCarthy, JK
Agueros, MA
Allam, SS
Prieto, CA
An, D
Anderson, KSJ
Anderson, SF
Annis, J
Bahcall, NA
Bailer-Jones, CAL
Barentine, JC
Bassett, BA
Becker, AC
Beers, TC
Bell, EF
Belokurov, V
Berlind, AA
Berman, EF
Bernardi, M
Bickerton, SJ
Bizyaev, D
Blakeslee, JP
Blanton, MR
Bochanski, JJ
Boroski, WN
Brewington, HJ
Brinchmann, J
Brinkmann, J
Brunner, RJ
Budavari, T
Carey, LN
Carliles, S
Carr, MA
Castander, FJ
Cinabro, D
Connolly, AJ
Csabai, I
Cunha, CE
Czarapata, PC
Davenport, JRA
de Haas, E
Dilday, B
Doi, M
Eisenstein, DJ
Evans, ML
Evans, NW
Fan, XH
Friedman, SD
Frieman, JA
Fukugita, M
Gansicke, BT
Gates, E
Gillespie, B
Gilmore, G
Gonzalez, B
Gonzalez, CF
Grebel, EK
Gunn, JE
Gyory, Z
Hall, PB
Harding, P
Harris, FH
Harvanek, M
Hawley, SL
Hayes, JJE
Heckman, TM
Hendry, JS
Hennessy, GS
Hindsley, RB
Hoblitt, J
Hogan, CJ
Hogg, DW
Holtzman, JA
Hyde, JB
Ichikawa, S
Ichikawa, T
Im, M
Ivezic, Z
Jester, S
Jiang, LH
Johnson, JA
Jorgensen, AM
Juric, M
Kent, SM
Kessler, R
Kleinman, SJ
Knapp, GR
Konishi, K
Kron, RG
Krzesinski, J
Kuropatkin, N
Lampeitl, H
Lebedeva, S
Lee, MG
Lee, YS
Leger, RF
Lepine, S
Li, NL
Lima, M
Lin, H
Long, DC
Loomis, CP
Loveday, J
Lupton, RH
Magnier, E
Malanushenko, O
Malanushenko, V
Mandelbaum, R
Margon, B
Marriner, JP
Martinez-Delgado, D
Matsubara, T
McGehee, PM
McKay, TA
Meiksin, A
Morrison, HL
Mullally, F
Munn, JA
Murphy, T
Nash, T
Nebot, A
Neilsen, EH
Newberg, HJ
Newman, PR
Nichol, RC
Nicinski, T
Nieto-Santisteban, M
Nitta, A
Okamura, S
Oravetz, DJ
Ostriker, JP
Owen, R
Padmanabhan, N
Pan, KK
Park, C
Pauls, G
Peoples, J
Percival, WJ
Pier, JR
Pope, AC
Pourbaix, D
Price, PA
Purger, N
Quinn, T
Raddick, MJ
Fiorentin, PR
Richards, GT
Richmond, MW
Riess, AG
Rix, HW
Rockosi, CM
Sako, M
Schlegel, DJ
Schneider, DP
Scholz, RD
Schreiber, MR
Schwope, AD
Seljak, U
Sesar, B
Sheldon, E
Shimasaku, K
Sibley, VC
Simmons, AE
Sivarani, T
Smith, JA
Smith, MC
Smolcic, V
Snedden, SA
Stebbins, A
Steinmetz, M
Stoughton, C
Strauss, MA
SubbaRao, M
Suto, Y
Szalay, AS
Szapudi, I
Szkody, P
Tanaka, M
Tegmark, M
Teodoro, LFA
Thakar, AR
Tremonti, CA
Tucker, DL
Uomoto, A
Berk, DEV
Vandenberg, J
Vidrih, S
Vogeley, MS
Voges, W
Vogt, NP
Wadadekar, Y
Watters, S
Weinberg, DH
West, AA
White, SDM
Wilhite, BC
Wonders, AC
Yanny, B
Yocum, DR
York, DG
Zehavi, I
Zibetti, S
Zucker, DB
AF Abazajian, Kevork N.
Adelman-McCarthy, Jennifer K.
Agueros, Marcel A.
Allam, Sahar S.
Prieto, Carlos Allende
An, Deokkeun
Anderson, Kurt S. J.
Anderson, Scott F.
Annis, James
Bahcall, Neta A.
Bailer-Jones, C. A. L.
Barentine, J. C.
Bassett, Bruce A.
Becker, Andrew C.
Beers, Timothy C.
Bell, Eric F.
Belokurov, Vasily
Berlind, Andreas A.
Berman, Eileen F.
Bernardi, Mariangela
Bickerton, Steven J.
Bizyaev, Dmitry
Blakeslee, John P.
Blanton, Michael R.
Bochanski, John J.
Boroski, William N.
Brewington, Howard J.
Brinchmann, Jarle
Brinkmann, J.
Brunner, Robert J.
Budavari, Tamas
Carey, Larry N.
Carliles, Samuel
Carr, Michael A.
Castander, Francisco J.
Cinabro, David
Connolly, A. J.
Csabai, Istvan
Cunha, Carlos E.
Czarapata, Paul C.
Davenport, James R. A.
de Haas, Ernst
Dilday, Ben
Doi, Mamoru
Eisenstein, Daniel J.
Evans, Michael L.
Evans, N. W.
Fan, Xiaohui
Friedman, Scott D.
Frieman, Joshua A.
Fukugita, Masataka
Gansicke, Boris T.
Gates, Evalyn
Gillespie, Bruce
Gilmore, G.
Gonzalez, Belinda
Gonzalez, Carlos F.
Grebel, Eva K.
Gunn, James E.
Gyory, Zsuzsanna
Hall, Patrick B.
Harding, Paul
Harris, Frederick H.
Harvanek, Michael
Hawley, Suzanne L.
Hayes, Jeffrey J. E.
Heckman, Timothy M.
Hendry, John S.
Hennessy, Gregory S.
Hindsley, Robert B.
Hoblitt, J.
Hogan, Craig J.
Hogg, David W.
Holtzman, Jon A.
Hyde, Joseph B.
Ichikawa, Shin-ichi
Ichikawa, Takashi
Im, Myungshin
Ivezic, Zeljko
Jester, Sebastian
Jiang, Linhua
Johnson, Jennifer A.
Jorgensen, Anders M.
Juric, Mario
Kent, Stephen M.
Kessler, R.
Kleinman, S. J.
Knapp, G. R.
Konishi, Kohki
Kron, Richard G.
Krzesinski, Jurek
Kuropatkin, Nikolay
Lampeitl, Hubert
Lebedeva, Svetlana
Lee, Myung Gyoon
Lee, Young Sun
Leger, R. French
Lepine, Sebastien
Li, Nolan
Lima, Marcos
Lin, Huan
Long, Daniel C.
Loomis, Craig P.
Loveday, Jon
Lupton, Robert H.
Magnier, Eugene
Malanushenko, Olena
Malanushenko, Viktor
Mandelbaum, Rachel
Margon, Bruce
Marriner, John P.
Martinez-Delgado, David
Matsubara, Takahiko
McGehee, Peregrine M.
McKay, Timothy A.
Meiksin, Avery
Morrison, Heather L.
Mullally, Fergal
Munn, Jeffrey A.
Murphy, Tara
Nash, Thomas
Nebot, Ada
Neilsen, Eric H., Jr.
Newberg, Heidi Jo
Newman, Peter R.
Nichol, Robert C.
Nicinski, Tom
Nieto-Santisteban, Maria
Nitta, Atsuko
Okamura, Sadanori
Oravetz, Daniel J.
Ostriker, Jeremiah P.
Owen, Russell
Padmanabhan, Nikhil
Pan, Kaike
Park, Changbom
Pauls, George
Peoples, John, Jr.
Percival, Will J.
Pier, Jeffrey R.
Pope, Adrian C.
Pourbaix, Dimitri
Price, Paul A.
Purger, Norbert
Quinn, Thomas
Raddick, M. Jordan
Fiorentin, Paola Re
Richards, Gordon T.
Richmond, Michael W.
Riess, Adam G.
Rix, Hans-Walter
Rockosi, Constance M.
Sako, Masao
Schlegel, David J.
Schneider, Donald P.
Scholz, Ralf-Dieter
Schreiber, Matthias R.
Schwope, Axel D.
Seljak, Uros
Sesar, Branimir
Sheldon, Erin
Shimasaku, Kazu
Sibley, Valena C.
Simmons, A. E.
Sivarani, Thirupathi
Smith, J. Allyn
Smith, Martin C.
Smolcic, Vernesa
Snedden, Stephanie A.
Stebbins, Albert
Steinmetz, Matthias
Stoughton, Chris
Strauss, Michael A.
SubbaRao, Mark
Suto, Yasushi
Szalay, Alexander S.
Szapudi, Istvan
Szkody, Paula
Tanaka, Masayuki
Tegmark, Max
Teodoro, Luis F. A.
Thakar, Aniruddha R.
Tremonti, Christy A.
Tucker, Douglas L.
Uomoto, Alan
Berk, Daniel E. Vanden
Vandenberg, Jan
Vidrih, S.
Vogeley, Michael S.
Voges, Wolfgang
Vogt, Nicole P.
Wadadekar, Yogesh
Watters, Shannon
Weinberg, David H.
West, Andrew A.
White, Simon D. M.
Wilhite, Brian C.
Wonders, Alainna C.
Yanny, Brian
Yocum, D. R.
York, Donald G.
Zehavi, Idit
Zibetti, Stefano
Zucker, Daniel B.
TI THE SEVENTH DATA RELEASE OF THE SLOAN DIGITAL SKY SURVEY
SO ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES
LA English
DT Article
DE atlases; catalogs; surveys
ID SPECTROSCOPIC TARGET SELECTION; CCD ASTROGRAPH CATALOG; GALAXY SAMPLE;
OPEN CLUSTERS; STARS; PHOTOMETRY; SYSTEM; FIELD; CALIBRATION; MANAGEMENT
AB This paper describes the Seventh Data Release of the Sloan Digital Sky Survey (SDSS), marking the completion of the original goals of the SDSS and the end of the phase known as SDSS-II. It includes 11,663 deg(2) of imaging data, with most of the similar to 2000 deg(2) increment over the previous data release lying in regions of low Galactic latitude. The catalog contains five-band photometry for 357 million distinct objects. The survey also includes repeat photometry on a 120 degrees long, 2 degrees.5 wide stripe along the celestial equator in the Southern Galactic Cap, with some regions covered by as many as 90 individual imaging runs. We include a co-addition of the best of these data, going roughly 2 mag fainter than the main survey over 250 deg(2). The survey has completed spectroscopy over 9380 deg(2); the spectroscopy is now complete over a large contiguous area of the Northern Galactic Cap, closing the gap that was present in previous data releases. There are over 1.6 million spectra in total, including 930,000 galaxies, 120,000 quasars, and 460,000 stars. The data release includes improved stellar photometry at low Galactic latitude. The astrometry has all been recalibrated with the second version of the USNO CCD Astrograph Catalog, reducing the rms statistical errors at the bright end to 45 milliarcseconds per coordinate. We further quantify a systematic error in bright galaxy photometry due to poor sky determination; this problem is less severe than previously reported for the majority of galaxies. Finally, we describe a series of improvements to the spectroscopic reductions, including better flat fielding and improved wavelength calibration at the blue end, better processing of objects with extremely strong narrow emission lines, and an improved determination of stellar metallicities.
C1 [Abazajian, Kevork N.] Univ Maryland, Dept Phys, College Pk, MD 20742 USA.
[Adelman-McCarthy, Jennifer K.; Allam, Sahar S.; Annis, James; Berman, Eileen F.; Boroski, William N.; Czarapata, Paul C.; Frieman, Joshua A.; Gonzalez, Belinda; Gonzalez, Carlos F.; Hendry, John S.; Hogan, Craig J.; Kent, Stephen M.; Kron, Richard G.; Kuropatkin, Nikolay; Lebedeva, Svetlana; Lin, Huan; Marriner, John P.; Nash, Thomas; Neilsen, Eric H., Jr.; Nicinski, Tom; Peoples, John, Jr.; Sibley, Valena C.; Stebbins, Albert; Stoughton, Chris; Tucker, Douglas L.; Yanny, Brian; Yocum, D. R.] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA.
[Agueros, Marcel A.] Columbia Univ, Columbia Astrophys Lab, New York, NY 10027 USA.
[Allam, Sahar S.] Univ Wyoming, Dept Phys & Astron, Laramie, WY 82071 USA.
[Prieto, Carlos Allende] Univ Coll London, Mullard Space Sci Lab, Holmbury Sl Mary RH5 6NT, Surrey, England.
[An, Deokkeun; Johnson, Jennifer A.; Weinberg, David H.] Ohio State Univ, Dept Astron, Columbus, OH 43210 USA.
[An, Deokkeun; McGehee, Peregrine M.] CALTECH, IPAC, Pasadena, CA 91125 USA.
[Anderson, Kurt S. J.; Bizyaev, Dmitry; Brewington, Howard J.; Brinkmann, J.; Krzesinski, Jurek; Long, Daniel C.; Malanushenko, Olena; Malanushenko, Viktor; Newman, Peter R.; Oravetz, Daniel J.; Pan, Kaike; Simmons, A. E.; Snedden, Stephanie A.; Watters, Shannon] Apache Point Observ, Sunspot, NM 88349 USA.
[Anderson, Kurt S. J.; Holtzman, Jon A.; Vogt, Nicole P.] New Mexico State Univ, Dept Astron, Las Cruces, NM 88003 USA.
[Anderson, Scott F.; Becker, Andrew C.; Bochanski, John J.; Carey, Larry N.; Connolly, A. J.; Evans, Michael L.; Hawley, Suzanne L.; Ivezic, Zeljko; Leger, R. French; Owen, Russell; Quinn, Thomas; Sesar, Branimir; Stoughton, Chris; Szkody, Paula] Univ Washington, Dept Astron, Seattle, WA 98195 USA.
[Bahcall, Neta A.; Bickerton, Steven J.; Carr, Michael A.; Gunn, James E.; Knapp, G. R.; Loomis, Craig P.; Lupton, Robert H.; Mullally, Fergal; Ostriker, Jeremiah P.; Pauls, George; Pourbaix, Dimitri; Strauss, Michael A.; Wadadekar, Yogesh] Princeton Univ, Dept Astrophys Sci, Princeton, NJ 08544 USA.
[Bailer-Jones, C. A. L.; Bell, Eric F.; Jester, Sebastian; Fiorentin, Paola Re; Rix, Hans-Walter; Tremonti, Christy A.; Zibetti, Stefano] Max Planck Inst Astron, D-69117 Heidelberg, Germany.
[Barentine, J. C.] Univ Texas Austin, McDonald Observ, Austin, TX 78712 USA.
[Barentine, J. C.] Univ Texas Austin, Dept Astron, Austin, TX 78712 USA.
[Bassett, Bruce A.] S African Astron Observ, ZA-7935 Cape Town, South Africa.
[Bassett, Bruce A.] Univ Cape Town, ZA-7925 Cape Town, South Africa.
[Beers, Timothy C.; Lee, Young Sun; Sivarani, Thirupathi] Michigan State Univ, CSCE, Dept Phys & Astrophys, E Lansing, MI 48824 USA.
[Beers, Timothy C.; Sivarani, Thirupathi] Michigan State Univ, JINA, E Lansing, MI 48824 USA.
[Belokurov, Vasily; Evans, N. W.; Gilmore, G.; Smith, Martin C.; Zucker, Daniel B.] Univ Cambridge, Inst Astron, Cambridge CB3 0HA, England.
[Berlind, Andreas A.] Vanderbilt Univ, Dept Phys & Astron, Nashville, TN 37235 USA.
[Bernardi, Mariangela; Hyde, Joseph B.; Lima, Marcos; Sako, Masao] Univ Penn, Dept Phys & Astron, Philadelphia, PA 19104 USA.
[Blakeslee, John P.] Natl Res Council Canada, Herzberg Inst Astrophys, Victoria, BC V9E 2E7, Canada.
[Blanton, Michael R.; Hogg, David W.; Sheldon, Erin] NYU, Dept Phys, Ctr Cosmol & Particle Phys, New York, NY 10003 USA.
[Bochanski, John J.; West, Andrew A.] MIT Kavli Inst Astrophys & Space Res, Cambridge, MA 02139 USA.
[Brinchmann, Jarle] Leiden Univ, Leiden Observ, NL-2300 RA Leiden, Netherlands.
[Brinchmann, Jarle] Univ Porto, Ctr Astrofis, P-4150762 Oporto, Portugal.
[Brunner, Robert J.] Univ Illinois, Dept Astron, Urbana, IL 61801 USA.
[Budavari, Tamas; Carliles, Samuel; Gillespie, Bruce; Heckman, Timothy M.; Li, Nolan; Nieto-Santisteban, Maria; Raddick, M. Jordan; Riess, Adam G.; Szalay, Alexander S.; Thakar, Aniruddha R.; Vandenberg, Jan; Wonders, Alainna C.] Johns Hopkins Univ, Ctr Astrophys Sci, Dept Phys & Astron, Baltimore, MD 21218 USA.
[Castander, Francisco J.] Inst Ciencies Espai IEEC CSIC, E-08193 Barcelona, Spain.
[Cinabro, David] Wayne State Univ, Dept Phys & Astron, Detroit, MI 48202 USA.
[Csabai, Istvan; Gyory, Zsuzsanna; Purger, Norbert] Eotvos Lorand Univ, Dept Phys Complex Syst, H-1518 Budapest, Hungary.
[Cunha, Carlos E.; McKay, Timothy A.] Univ Michigan, Dept Phys, Ann Arbor, MI 48109 USA.
[Cunha, Carlos E.; McKay, Timothy A.] Univ Michigan, Dept Astron, Ann Arbor, MI 48109 USA.
[Davenport, James R. A.] San Diego State Univ, Dept Astron, San Diego, CA 92182 USA.
[de Haas, Ernst] Princeton Univ, Joseph Henry Labs, Princeton, NJ 08544 USA.
[Dilday, Ben; Lima, Marcos] Univ Chicago, Dept Phys, Chicago, IL 60637 USA.
[Dilday, Ben; Frieman, Joshua A.; Gates, Evalyn; Kessler, R.; Lima, Marcos] Univ Chicago, Kavli Inst Cosmol Phys, Chicago, IL 60637 USA.
[Dilday, Ben] Rutgers State Univ, Dept Phys & Astron, Piscataway, NJ 08854 USA.
[Doi, Mamoru] Univ Tokyo, Grad Sch Sci, Inst Astron, Mitaka, Tokyo 1810015, Japan.
[Doi, Mamoru] Univ Tokyo, Inst Phys & Math Universe, Kashiwa, Chiba 2778568, Japan.
[Eisenstein, Daniel J.; Fan, Xiaohui; Jiang, Linhua] Univ Arizona, Steward Observ, Tucson, AZ 85721 USA.
[Friedman, Scott D.] Space Telescope Sci Inst, Baltimore, MD 21218 USA.
[Frieman, Joshua A.; Kron, Richard G.; SubbaRao, Mark; York, Donald G.] Univ Chicago, Dept Astron & Astrophys, Chicago, IL 60637 USA.
[Fukugita, Masataka; Konishi, Kohki] Univ Tokyo, Inst Cosm Ray Res, Kashiwa, Chiba 2778582, Japan.
[Gansicke, Boris T.] Univ Warwick, Dept Phys, Coventry CV4 7AL, W Midlands, England.
[Grebel, Eva K.; Vidrih, S.] Univ Heidelberg, Zentrum Astron, Astron Rech Inst, D-69120 Heidelberg, Germany.
[Hall, Patrick B.] York Univ, Dept Phys & Astron, Toronto, ON M3J 1P3, Canada.
[Harding, Paul; Morrison, Heather L.; Zehavi, Idit] Case Western Reserve Univ, Dept Astron, Cleveland, OH 44106 USA.
[Harris, Frederick H.; Munn, Jeffrey A.; Pier, Jeffrey R.] USN Observ, Flagstaff Stn, Flagstaff, AZ 86001 USA.
[Harvanek, Michael] Lowell Observ, Flagstaff, AZ 86001 USA.
[Hayes, Jeffrey J. E.] NASA Headquarters, Heliophys Div, Sci Mission Directorate, Washington, DC 20546 USA.
[Hennessy, Gregory S.] USN Observ, Washington, DC 20392 USA.
[Hindsley, Robert B.] USN, Remote Sensing Div, Res Lab, Washington, DC 20392 USA.
[Hoblitt, J.; Magnier, Eugene; Pope, Adrian C.; Price, Paul A.; Szapudi, Istvan] Univ Hawaii, Inst Astron, Honolulu, HI 96822 USA.
[Ichikawa, Shin-ichi] Natl Astron Observ, Mitaka, Tokyo 1818588, Japan.
[Ichikawa, Takashi] Tohoku Univ, Astron Inst, Aoba Ku, Sendai, Miyagi 9808578, Japan.
[Im, Myungshin; Lee, Myung Gyoon] Seoul Natl Univ, Dept Phys & Astron, Seoul 151742, South Korea.
[Jorgensen, Anders M.] New Mexico Inst Min & Technol, Dept Elect Engn, Socorro, NM 87801 USA.
[Juric, Mario; Mandelbaum, Rachel] Inst Adv Study, Princeton, NJ 08540 USA.
[Kleinman, S. J.; Nitta, Atsuko] Gemini Observ, Hilo, HI 96720 USA.
[Konishi, Kohki; Okamura, Sadanori; Shimasaku, Kazu; Suto, Yasushi] Univ Tokyo, Grad Sch Sci, Dept Phys, Bunkyo Ku, Tokyo 1130033, Japan.
[Konishi, Kohki; Okamura, Sadanori; Shimasaku, Kazu; Suto, Yasushi] Univ Tokyo, Grad Sch Sci, Res Ctr Early Universe, Bunkyo Ku, Tokyo 1130033, Japan.
[Krzesinski, Jurek] Akad Pedog Krakowie, Obserwatorium Astron Suhorze, PL-30084 Krakow, Poland.
[Lampeitl, Hubert; Nichol, Robert C.; Percival, Will J.] Univ Portsmouth, ICG, Portsmouth PO1 2EG, Hants, England.
[Lepine, Sebastien] Amer Museum Nat Hist, Dept Astrophys, New York, NY 10024 USA.
[Loveday, Jon] Univ Sussex, Ctr Astron, Brighton BN1 9QH, E Sussex, England.
[Margon, Bruce] Univ Calif Santa Cruz, Dept Astron & Astrophys, Santa Cruz, CA 95064 USA.
[Martinez-Delgado, David] Inst Astrofis Canarias, E-38205 Tenerife, Spain.
[Matsubara, Takahiko] Nagoya Univ, Dept Phys & Astrophys, Nagoya, Aichi 4648602, Japan.
[Meiksin, Avery; Murphy, Tara] Univ Edinburgh, Royal Observ, Inst Astron, SUPA, Edinburgh EH9 3HJ, Midlothian, Scotland.
[Murphy, Tara] Univ Sydney, Sydney Inst Astron, Sydney, NSW 2006, Australia.
[Nebot, Ada; Scholz, Ralf-Dieter; Schwope, Axel D.; Steinmetz, Matthias] Astrophys Inst Potsdam, D-14482 Potsdam, Germany.
[Newberg, Heidi Jo] Rensselaer Polytech Inst, Dept Phys Appl Phys & Astron, Troy, NY 12180 USA.
[Newman, Peter R.; Nicinski, Tom] CMC Elect Aurora, Sugar Grove, IL 60554 USA.
[Padmanabhan, Nikhil; Schlegel, David J.; Seljak, Uros] Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
[Park, Changbom] Korea Inst Adv Study, Seoul 130722, South Korea.
[Pope, Adrian C.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
[Pourbaix, Dimitri] Univ Libre Bruxelles, FNRS Inst Astron & Astrophys, B-1050 Brussels, Belgium.
[Fiorentin, Paola Re] Univ Ljubljana, Dept Phys, Ljubljana 1000, Slovenia.
[Richards, Gordon T.; Vogeley, Michael S.] Drexel Univ, Dept Phys, Philadelphia, PA 19104 USA.
[Richmond, Michael W.] Rochester Inst Technol, Dept Phys, Rochester, NY 14623 USA.
[Rockosi, Constance M.] Univ Calif Santa Cruz, Lick Observ, UCO, Santa Cruz, CA 95064 USA.
[Sako, Masao] Stanford Univ, Kavli Inst Particle Astrophys & Cosmol, Stanford, CA 94309 USA.
[Schneider, Donald P.; Berk, Daniel E. Vanden] Penn State Univ, Dept Astron & Astrophys, University Pk, PA 16802 USA.
[Schreiber, Matthias R.] Univ Valparaiso, Dept Fis & Astron, Valparaiso, Chile.
[Seljak, Uros] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
[Seljak, Uros] Univ Zurich, Inst Theoret Phys, CH-8057 Zurich, Switzerland.
[Sheldon, Erin] Brookhaven Natl Lab, Upton, NY 11973 USA.
[Sivarani, Thirupathi] Univ Florida, Dept Astron, Bryant Space Sci Ctr, Gainesville, FL 32611 USA.
[Smith, J. Allyn] Austin Peay State Univ, Dept Phys & Astron, Clarksville, TN 37040 USA.
[SubbaRao, Mark] Adler Planetarium & Astron Museum, Chicago, IL 60605 USA.
[Tanaka, Masayuki] European So Observ, D-85748 Garching, Germany.
[Tegmark, Max] MIT, Dept Phys, Cambridge, MA 02139 USA.
[Teodoro, Luis F. A.] Univ Glasgow, Dept Phys & Astron, Astron & Astrophys Grp, Glasgow G12 8QQ, Lanark, Scotland.
[Uomoto, Alan] Observ Carnegie Inst Washington, Pasadena, CA 91101 USA.
[Berk, Daniel E. Vanden] St Vincent Coll, Dept Phys, Latrobe, PA 15650 USA.
[Voges, Wolfgang] Max Planck Inst Extraterr Phys, D-85741 Garching, Germany.
[Wadadekar, Yogesh] Tata Inst Fundamental Res, Natl Ctr Radio Astrophys, Pune 411007, Maharashtra, India.
[Watters, Shannon] Inst Astron, Adv Technol & Res Ctr, Pukalani, HI 96768 USA.
[White, Simon D. M.] Max Planck Inst Astrophys, D-85748 Garching, Germany.
[Wilhite, Brian C.] Elmhurst Coll, Dept Phys, Chicago, IL 60126 USA.
[York, Donald G.] Univ Chicago, Enrico Fermi Inst, Chicago, IL 60637 USA.
RP Abazajian, KN (reprint author), Univ Maryland, Dept Phys, College Pk, MD 20742 USA.
RI Lima, Marcos/E-8378-2010; Padmanabhan, Nikhil/A-2094-2012; Gaensicke,
Boris/A-9421-2012; Margon, Bruce/B-5913-2012; Csabai,
Istvan/F-2455-2012; Im, Myungshin/B-3436-2013; McKay,
Timothy/C-1501-2009; West, Andrew/H-3717-2014; Agueros,
Marcel/K-7998-2014; Mandelbaum, Rachel/N-8955-2014; Brinchmann,
Jarle/M-2616-2015; Jiang, Linhua/H-5485-2016;
OI Gaensicke, Boris/0000-0002-2761-3005; Im, Myungshin/0000-0002-8537-6714;
McKay, Timothy/0000-0001-9036-6150; Agueros, Marcel/0000-0001-7077-3664;
Mandelbaum, Rachel/0000-0003-2271-1527; Brinchmann,
Jarle/0000-0003-4359-8797; Jiang, Linhua/0000-0003-4176-6486; Tucker,
Douglas/0000-0001-7211-5729; Murphy, Tara/0000-0002-2686-438X; Re
Fiorentin, Paola/0000-0002-4995-0475; Meiksin,
Avery/0000-0002-5451-9057; Csabai, Istvan/0000-0001-9232-9898;
/0000-0002-1891-3794; Hogg, David/0000-0003-2866-9403; Davenport,
James/0000-0002-0637-835X; Bell, Eric/0000-0002-5564-9873; Blakeslee,
John/0000-0002-5213-3548
FU Alfred P. Sloan Foundation; National Science Foundation; U. S.
Department of Energy; National Aeronautics and Space Administration;
Japanese Monbukagakusho; Max Planck Society; Higher Education Funding
Council for England
FX Funding for the SDSS and SDSS-II has been provided by the Alfred P.
Sloan Foundation, the Participating Institutions, the National Science
Foundation, the U. S. Department of Energy, the National Aeronautics and
Space Administration, the Japanese Monbukagakusho, the Max Planck
Society, and the Higher Education Funding Council for England.
NR 73
TC 2558
Z9 2584
U1 26
U2 173
PU IOP PUBLISHING LTD
PI BRISTOL
PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND
SN 0067-0049
J9 ASTROPHYS J SUPPL S
JI Astrophys. J. Suppl. Ser.
PD JUN
PY 2009
VL 182
IS 2
BP 543
EP 558
DI 10.1088/0067-0049/182/2/543
PG 16
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 448UE
UT WOS:000266286700004
ER
PT J
AU Artino, AR
Folga, RV
Vacchiano, C
AF Artino, Anthony R., Jr.
Folga, Richard V.
Vacchiano, Charles
TI Normobaric Hypoxia Training: The Effects of Breathing-Gas Flow Rate on
Symptoms
SO AVIATION SPACE AND ENVIRONMENTAL MEDICINE
LA English
DT Article
DE aerospace physiology; low-pressure chamber; reduced oxygen breathing
device; mask-on hypoxia training
ID PARADIGM
AB ARTINO JR,FOLGA RV,VACCHIANO C. Normobaric hypoxia training. the effects of breathing-gas flow rate on symptoms. Aviat Space Environ Med 2009; 80:547-52.
Introduction: The U.S. Navy has replaced segments of refresher low-pressure chamber instruction with normobaric hypoxia training using a reduced oxygen breathing device (ROBD). A previous training evaluation revealed that this alternative instructional paradigm is a preferred means of training experienced jet aviators to recognize and recover from hypoxia. However, findings from this earlier work also indicated that air hunger was the most commonly reported symptom during ROBD training. This finding raised concern that air hunger could have resulted from a training artifact caused by the lower breathing-gas flow rate produced by the ROBD when compared to more familiar jet aircraft breathing systems. In an effort to address this issue, a software change was made that increased ROBD mask flow from 30 to 50 L . min(-1) (LPM). The purpose of this retrospective study was to determine if there are differences in the hypoxia symptoms reported by aviators trained on the ROBD upgrade (ROBD-50) compared to those trained on the original device (ROBD-30). Methods: Hypoxia training was provided to 156 aviators using the ROBD-50, and survey results were compared to those obtained from 121 aviators trained on the ROBD-30. Results: There was a significant decrease in the number of aviators who reported experiencing air hunger while training on the ROBD-50 (44.2%,) as compared to the ROBD-30 (59.41%) [Pearson chi(2) (1) = 5.45, P < 0.05]. Discussion: These findings suggest that the ROBD breathing-gas flow rate is an important contributor to the symptom of air hunger and, therefore, may impact training fidelity.
C1 [Artino, Anthony R., Jr.] Uniformed Serv Univ Hlth Sci, Dept Prevent Med & Biometr, Div Occupat & Environm Hlth Sci, Bethesda, MD 20814 USA.
[Folga, Richard V.] USN, Operat Med Inst, Survival Training Inst, Human Performance & Training Technol Directorate, Pensacola, FL USA.
[Vacchiano, Charles] Duke Univ, Durham, NC USA.
RP Artino, AR (reprint author), Uniformed Serv Univ Hlth Sci, Dept Prevent Med & Biometr, Div Occupat & Environm Hlth Sci, 4301 Jones Bridge Rd, Bethesda, MD 20814 USA.
EM anthony.artino@usuhs.mil
OI Artino, Anthony/0000-0003-2661-7853
NR 12
TC 5
Z9 5
U1 1
U2 1
PU AEROSPACE MEDICAL ASSOC
PI ALEXANDRIA
PA 320 S HENRY ST, ALEXANDRIA, VA 22314-3579 USA
SN 0095-6562
J9 AVIAT SPACE ENVIR MD
JI Aviat. Space Environ. Med.
PD JUN
PY 2009
VL 80
IS 6
BP 547
EP 552
DI 10.3357/ASEM.2464.2009
PG 6
WC Public, Environmental & Occupational Health; Medicine, General &
Internal; Sport Sciences
SC Public, Environmental & Occupational Health; General & Internal
Medicine; Sport Sciences
GA 454LM
UT WOS:000266683400007
PM 19522365
ER
PT J
AU Pandya, RE
Smith, DR
Charlevoix, DJ
Hart, W
Hayes, MJ
Murillo, ST
Murphy, KA
Stanitski, DM
Whittaker, TM
AF Pandya, Rajul E.
Smith, David R.
Charlevoix, Donna J.
Hart, Wayne
Hayes, Marianne J.
Murillo, Shirley T.
Murphy, Kathleen A.
Stanitski, Diane M.
Whittaker, Thomas M.
TI A SUMMARY OF THE 16TH SYMPOSIUM ON EDUCATION
SO BULLETIN OF THE AMERICAN METEOROLOGICAL SOCIETY
LA English
DT Editorial Material
C1 [Pandya, Rajul E.] UCAR SOARS Program, Boulder, CO 80307 USA.
[Smith, David R.] USN Acad, Annapolis, MD 21402 USA.
[Charlevoix, Donna J.] Univ Illinois, Urbana, IL 61801 USA.
[Hart, Wayne] WHT TV, Evansville, IN USA.
[Hayes, Marianne J.] Fairfax Cty Publ Sch, Springfield, VA USA.
[Murillo, Shirley T.] NOAA, Atlantic Oceanog & Meteorol Lab, Hurricane Res Div, Miami, FL 33149 USA.
[Murphy, Kathleen A.] Ladue Sch Dist, St Louis, MO USA.
[Stanitski, Diane M.] Geocation LLC, Boulder, CO USA.
[Whittaker, Thomas M.] Univ Wisconsin, Space Sci & Engn Ctr, Cooperat Inst Meteorol Satellite Studies, Madison, WI USA.
RP Pandya, RE (reprint author), UCAR SOARS Program, POB 3000, Boulder, CO 80307 USA.
EM pandya@ucar.edu
RI Murillo, Shirley/C-3259-2014
OI Murillo, Shirley/0000-0002-2075-8682
NR 0
TC 0
Z9 0
U1 0
U2 0
PU AMER METEOROLOGICAL SOC
PI BOSTON
PA 45 BEACON ST, BOSTON, MA 02108-3693 USA
SN 0003-0007
J9 B AM METEOROL SOC
JI Bull. Amer. Meteorol. Soc.
PD JUN
PY 2009
VL 90
IS 6
BP 861
EP 865
DI 10.1175/2009BAMS2510.1
PG 5
WC Meteorology & Atmospheric Sciences
SC Meteorology & Atmospheric Sciences
GA 476VE
UT WOS:000268473500009
ER
PT J
AU Denning, PJ
AF Denning, Peter J.
TI The Profession of IT Beyond Computational Thinking
SO COMMUNICATIONS OF THE ACM
LA English
DT Editorial Material
ID SCIENCE
C1 [Denning, Peter J.] USN, Postgrad Sch, Cebrowski Inst Informat Innovat & Super, Monterey, CA USA.
RP Denning, PJ (reprint author), USN, Postgrad Sch, Cebrowski Inst Informat Innovat & Super, Monterey, CA USA.
EM pjd@nps.edu
NR 6
TC 9
Z9 9
U1 1
U2 15
PU ASSOC COMPUTING MACHINERY
PI NEW YORK
PA 2 PENN PLAZA, STE 701, NEW YORK, NY 10121-0701 USA
SN 0001-0782
J9 COMMUN ACM
JI Commun. ACM
PD JUN
PY 2009
VL 52
IS 6
BP 28
EP 30
DI 10.1145/1516046.1516054
PG 3
WC Computer Science, Hardware & Architecture; Computer Science, Software
Engineering; Computer Science, Theory & Methods
SC Computer Science
GA 448BE
UT WOS:000266235300016
ER
PT J
AU Choi, SR
Kowalik, RW
Alexander, DJ
Bansal, NP
AF Choi, Sung R.
Kowalik, Robert W.
Alexander, Donald J.
Bansal, Narottam P.
TI Elevated-temperature stress rupture in interlaminar shear of a Hi-Nic
SiC/SiC ceramic matrix composite
SO COMPOSITES SCIENCE AND TECHNOLOGY
LA English
DT Article
DE Ceramic matrix composite; Mechanical properties; MI SiC/SiC;
Interlaminar shear; Life prediction; Stress rupture
ID CRACK-GROWTH; STRENGTH; INPLANE
AB Assessments of stress rupture in a gas-turbine grade, melt-infiltrated Hi-Nicalon (TM) SiC continuous fiber-reinforced SiC ceramic matrix composite (CMC) were made in interlaminar shear at 1316 degrees C in air. The composite exhibited appreciable life limiting behavior with a life susceptibility parameter of n(s) = 22-24, estimated based on a proposed phenomenological life prediction model together with experimental data. The phenomenological life model was in good agreement in prediction between the stress rupture and the constant stress-rate data, validating its appropriateness in describing the life limiting phenomenon of the CIVIC coupons subjected to interlaminar shear. The results of this work also indicated that the governing mechanism(s) associated with failure in interlaminar shear would have remained almost unchanged, regardless of the type of loading configurations, either in stress rupture or in constant stress rate. Published by Elsevier Ltd.
C1 [Choi, Sung R.; Kowalik, Robert W.; Alexander, Donald J.] Naval Air Syst Command, Patuxent River, MD 20670 USA.
[Bansal, Narottam P.] NASA, Glenn Res Ctr, Cleveland, OH 44135 USA.
RP Choi, SR (reprint author), Naval Air Syst Command, 48066 Shaw Rd, Patuxent River, MD 20670 USA.
EM sung.choil@navy.mil
FU NAVAIR; Office of Naval Research
FX The authors (NAVAIR) acknowledge Dr. D. Shifler and the Office of Naval
Research for the support of this work. Some mechanical testing was
conducted at the NASA Glenn, Cleveland, Ohio.
NR 24
TC 11
Z9 11
U1 0
U2 15
PU ELSEVIER SCI LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
SN 0266-3538
J9 COMPOS SCI TECHNOL
JI Compos. Sci. Technol.
PD JUN
PY 2009
VL 69
IS 7-8
BP 890
EP 897
DI 10.1016/j.compscitech.2008.12.006
PG 8
WC Materials Science, Composites
SC Materials Science
GA 450DH
UT WOS:000266380700003
ER
PT J
AU Casares, S
Richie, TL
AF Casares, Sofia
Richie, Thomas L.
TI Immune evasion by malaria parasites: a challenge for vaccine development
SO CURRENT OPINION IN IMMUNOLOGY
LA English
DT Review
ID REGULATORY T-CELLS; EXPERIMENTAL CEREBRAL MALARIA; PLASMACYTOID
DENDRITIC CELLS; PLASMODIUM-CHABAUDI-ADAMI; ERYTHROCYTE INVASION;
FALCIPARUM; INFECTION; MICE; MATURATION; RESPONSES
AB Malaria is a deadly infectious disease that affects one to two billion people and kills up to one million children yearly. Despite decades of intensive research, we are still lacking an effective vaccine against malaria. Our efforts are being challenged by the complexity of Plasmodium's life cycle, its ability to parasitize and hide within the host cells, and its masterful ability to avoid clearance by the innate and adaptive host immune responses. In this article we will review the main mechanisms of immune evasion used by malaria parasites and discuss the implications for malaria vaccine development.
C1 [Casares, Sofia; Richie, Thomas L.] USN, Med Res Ctr, Walter Reed Army Inst Res, Infect Dis Directorate,US Mil Malaria Vaccine Pro, Silver Spring, MD USA.
RP Casares, S (reprint author), USN, Med Res Ctr, Walter Reed Army Inst Res, Infect Dis Directorate,US Mil Malaria Vaccine Pro, 503 Robert Grant Ave, Silver Spring, MD USA.
EM Sofia.casares@med.navy.mil; thomas.richie@med.navy.mil
RI Richie, Thomas/A-8028-2011;
OI Richie, Thomas/0000-0002-2946-5456
NR 61
TC 26
Z9 27
U1 0
U2 8
PU CURRENT BIOLOGY LTD
PI LONDON
PA 84 THEOBALDS RD, LONDON WC1X 8RR, ENGLAND
SN 0952-7915
J9 CURR OPIN IMMUNOL
JI Curr. Opin. Immunol.
PD JUN
PY 2009
VL 21
IS 3
BP 321
EP 330
DI 10.1016/j.coi.2009.05.015
PG 10
WC Immunology
SC Immunology
GA 470FO
UT WOS:000267960800014
PM 19493666
ER
PT J
AU Barlow, TK
Wu, JC
Steger, JW
Satter, EK
AF Barlow, Thomas K.
Wu, Joy C.
Steger, James W.
Satter, Elizabeth K.
TI What Is Your Diagnosis? The Diagnosis: Multiple Dermatofibromas
SO CUTIS
LA English
DT Editorial Material
ID SYSTEMIC-LUPUS-ERYTHEMATOSUS; ERUPTIVE DERMATOFIBROMAS; DIFFERENTIAL
EXPRESSION; GROWTH-FACTOR; PATIENT; PATHOGENESIS; PROTUBERANS;
INVOLVEMENT; CELLS; LASER
C1 [Barlow, Thomas K.; Wu, Joy C.; Steger, James W.; Satter, Elizabeth K.] USN, Med Ctr, Dept Dermatol, San Diego, CA 92152 USA.
RP Barlow, TK (reprint author), USN Hosp, Oak Harbor, WA USA.
NR 14
TC 0
Z9 0
U1 0
U2 0
PU QUADRANT HEALTHCOM INC
PI PARSIPPANY
PA 7 CENTURY DRIVE, STE 302, PARSIPPANY, NJ 07054-4603 USA
SN 0011-4162
J9 CUTIS
JI Cutis
PD JUN
PY 2009
VL 83
IS 6
BP 290
EP +
PG 3
WC Dermatology
SC Dermatology
GA 474FX
UT WOS:000268269100003
PM 19681338
ER
PT J
AU Christova, I
Di Caro, A
Papa, A
Castilletti, C
Andonova, L
Kalvatchev, N
Papadimitriou, E
Carletti, F
Mohareb, E
Capobianchi, MR
Ippolito, G
Rezza, G
AF Christova, Iva
Di Caro, Antonino
Papa, Anna
Castilletti, Concetta
Andonova, Lubena
Kalvatchev, Nikolay
Papadimitriou, Evangelia
Carletti, Fabrizio
Mohareb, Emad
Capobianchi, Maria R.
Ippolito, Giuseppe
Rezza, Giovanni
TI Crimean-Congo Hemorrhagic Fever, Southwestern Bulgaria
SO EMERGING INFECTIOUS DISEASES
LA English
DT Letter
C1 [Christova, Iva; Kalvatchev, Nikolay] Natl Ctr Infect & Parasit Dis, Sofia 1504, Bulgaria.
[Di Caro, Antonino; Castilletti, Concetta; Carletti, Fabrizio; Capobianchi, Maria R.; Ippolito, Giuseppe] Natl Inst Infect Dis L Spallanzani, Rome, Italy.
[Papa, Anna; Papadimitriou, Evangelia] Aristotle Univ Thessaloniki, GR-54006 Thessaloniki, Greece.
[Andonova, Lubena] Infect Dis Hosp, Sofia, Bulgaria.
[Mohareb, Emad] USN, Med Res Unit 3, Cairo, Egypt.
[Rezza, Giovanni] Ist Super Sanita, I-00161 Rome, Italy.
RP Christova, I (reprint author), Natl Ctr Infect & Parasit Dis, Blvd Yanko Sakazov 26, Sofia 1504, Bulgaria.
EM iva_christova@ncipd.org
RI REZZA, GIOVANNI/D-4393-2016; Di Caro, Antonino/K-6854-2016; Castilletti,
Concetta/B-6545-2016;
OI REZZA, GIOVANNI/0000-0003-0268-6790; Di Caro,
Antonino/0000-0001-6027-3009; Castilletti, Concetta/0000-0001-9819-236X;
Ippolito, Giuseppe/0000-0002-1076-2979; Capobianchi, Maria
Rosaria/0000-0003-3465-0071
NR 8
TC 27
Z9 27
U1 1
U2 4
PU CENTERS DISEASE CONTROL
PI ATLANTA
PA 1600 CLIFTON RD, ATLANTA, GA 30333 USA
SN 1080-6040
J9 EMERG INFECT DIS
JI Emerg. Infect. Dis
PD JUN
PY 2009
VL 15
IS 6
BP 983
EP 985
DI 10.3201/eid1506.081567
PG 3
WC Immunology; Infectious Diseases
SC Immunology; Infectious Diseases
GA 452KO
UT WOS:000266539100032
PM 19523314
ER
PT J
AU Close, HG
Shah, SR
Brodie, EL
Pearson, A
AF Close, H. G.
Shah, S. R.
Brodie, E. L.
Pearson, A.
TI C-13-enriched bacterial lipids in the modern ocean: An analogue to the
Proterozoic record
SO GEOCHIMICA ET COSMOCHIMICA ACTA
LA English
DT Meeting Abstract
CT 19th Annual VM Goldschmidt Conference
CY JUN 21, 2009
CL Davos, SWITZERLAND
C1 [Close, H. G.; Pearson, A.] Harvard Univ, Cambridge, MA 02138 USA.
[Shah, S. R.] USN, Res Lab, Washington, DC 20001 USA.
[Brodie, E. L.] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
EM sunishah@ccs.nrl.navy.mil; LBrodie@lbl.gov; pearson@eps.harvard.edu
RI Shah Walter, Sunita/D-4981-2013
OI Shah Walter, Sunita/0000-0003-2206-9052
NR 0
TC 0
Z9 0
U1 1
U2 4
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0016-7037
J9 GEOCHIM COSMOCHIM AC
JI Geochim. Cosmochim. Acta
PD JUN
PY 2009
VL 73
IS 13
SU S
BP A231
EP A231
PG 1
WC Geochemistry & Geophysics
SC Geochemistry & Geophysics
GA 460YS
UT WOS:000267229900475
ER
PT J
AU Furukawa, Y
AF Furukawa, Yoko
TI Stability of suspended colloidal clays and organic matter in rivers
SO GEOCHIMICA ET COSMOCHIMICA ACTA
LA English
DT Meeting Abstract
CT 19th Annual VM Goldschmidt Conference
CY JUN 21, 2009
CL Davos, SWITZERLAND
C1 [Furukawa, Yoko] USN, Res Lab, Seafloor Sci Branch, Stennis Space Ctr, MS 39529 USA.
EM yoko.furukawa@nrlssc.navy.mil
RI Furukawa, Yoko/B-3099-2013
NR 0
TC 0
Z9 0
U1 0
U2 1
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0016-7037
J9 GEOCHIM COSMOCHIM AC
JI Geochim. Cosmochim. Acta
PD JUN
PY 2009
VL 73
IS 13
SU S
BP A405
EP A405
PG 1
WC Geochemistry & Geophysics
SC Geochemistry & Geophysics
GA 460YS
UT WOS:000267229901041
ER
PT J
AU Nittler, LR
Alexander, CMO
Cody, GD
De Gregor, BT
Kilcoyne, ALD
Stroud, RM
Zega, TJ
AF Nittler, L. R.
Alexander, C. M. O'D.
Cody, G. D.
De Gregor, B. T.
Kilcoyne, A. L. D.
Stroud, R. M.
Zega, T. J.
TI Correlated Microanalysis of Extraterrestrial Carbonaceous Nanoglobules
SO GEOCHIMICA ET COSMOCHIMICA ACTA
LA English
DT Meeting Abstract
CT 19th Annual VM Goldschmidt Conference
CY JUN 21, 2009
CL Davos, SWITZERLAND
ID METEORITE
C1 [Nittler, L. R.; Alexander, C. M. O'D.; Cody, G. D.] Carnegie Inst Washington, Washington, DC 20015 USA.
[De Gregor, B. T.; Stroud, R. M.; Zega, T. J.] USN, Res Lab, Div Mat Sci & Technol, Washington, DC 20375 USA.
[Kilcoyne, A. L. D.] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Chem Sci, Berkeley, CA 94720 USA.
EM lnittler@ciw.edu
RI Kilcoyne, David/I-1465-2013
NR 5
TC 0
Z9 0
U1 0
U2 1
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0016-7037
J9 GEOCHIM COSMOCHIM AC
JI Geochim. Cosmochim. Acta
PD JUN
PY 2009
VL 73
IS 13
BP A948
EP A948
PG 1
WC Geochemistry & Geophysics
SC Geochemistry & Geophysics
GA 460YS
UT WOS:000267229902355
ER
PT J
AU Papineau, D
De Gregorio, BT
Fries, MD
Steele, A
Stroud, RM
Wang, J
Mojzsis, SJ
Konhauser, KO
Pecoits, E
Cody, GD
Fogel, ML
AF Papineau, D.
De Gregorio, B. T.
Fries, M. D.
Steele, A.
Stroud, R. M.
Wang, J.
Mojzsis, S. J.
Konhauser, K. O.
Pecoits, E.
Cody, G. D.
Fogel, M. L.
TI Carbonaceous material associated with apatite in the Akilia Qp rock
SO GEOCHIMICA ET COSMOCHIMICA ACTA
LA English
DT Meeting Abstract
CT 19th Annual VM Goldschmidt Conference
CY JUN 21, 2009
CL Davos, SWITZERLAND
C1 [Papineau, D.; Steele, A.; Wang, J.; Cody, G. D.; Fogel, M. L.] Carnegie Inst Washington, Washington, DC 20015 USA.
[De Gregorio, B. T.; Stroud, R. M.] USN, Res Lab, Div Mat Sci & Technol, Washington, DC 20375 USA.
[Fries, M. D.] NASA, Jet Prop Lab, Pasadena, CA USA.
[Mojzsis, S. J.] Univ Colorado, Dept Geol Sci, Boulder, CO 80309 USA.
[Konhauser, K. O.; Pecoits, E.] Univ Alberta, Dept Earth Sci, Edmonton, AB, Canada.
EM dpapineau@ciw.edu
RI De Gregorio, Bradley/B-8465-2008
OI De Gregorio, Bradley/0000-0001-9096-3545
NR 0
TC 0
Z9 0
U1 0
U2 1
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0016-7037
J9 GEOCHIM COSMOCHIM AC
JI Geochim. Cosmochim. Acta
PD JUN
PY 2009
VL 73
IS 13
BP A991
EP A991
PG 1
WC Geochemistry & Geophysics
SC Geochemistry & Geophysics
GA 460YS
UT WOS:000267229902442
ER
PT J
AU Jacobs, VL
AF Jacobs, Verne L.
TI Kinetic and spectral descriptions for atomic processes involving
autoionizing resonances in high-temperature plasmas
SO HIGH ENERGY DENSITY PHYSICS
LA English
DT Article
DE Autoionization; Dielectronic recombination; Kinetic theory;
Spectral-line shapes; Reduced density matrix; Relaxation and decoherence
phenomena
ID DIELECTRONIC SATELLITE SPECTRA; UNIFIED DESCRIPTION; RADIATIVE EMISSION;
RECOMBINATION; IONS; COLLISIONS; ELECTRON; DENSITY; IONIZATION; FIELDS
AB An investigation has been in progress on the influence of autoionizing resonances on atomic processes in high-temperature plasmas, particularly those encountered in magnetic- and laser-fusion research and in astrophysics. In the kinetic-theory description, account is taken of the indirect contributions of autoionizing resonances to the effective rates for excitation, de-excitation, ionization, and recombination. A microscopic kinetic-theory foundation is employed for the systematic reduction to the macroscopic radiation-hydrodynamics description. From the spectral perspective, particular emphasis has been directed at radiative emission processes from autoionizing resonances. These processes can give rise to resolvable dielectronic-recombination satellite features, which have been analyzed to determine plasma temperatures, densities, electric and magnetic-field distributions, and charge-state distributions. We also investigate radiative absorption processes, which play important roles in the denser plasmas encountered in laser-matter interactions. Particular emphasis is directed at radiative excitation processes involving autoionizing resonances, which can provide significant contributions to the non-equilibrium ionization structures and to the radiative absorption and emission spectra in the presence of intense electromagnetic fields. A reduced-density-matrix formulation has been under development for the microscopic description of the electromagnetic interactions of many-electron atomic systems in the presence of collisional and radiative decoherence and relaxation processes. A central objective is to develop a fundamental quantum-statistical formulation, in which bound-state and autoionization-resonance phenomena can be treated on an equal footing. An ultimate goal is to provide a comprehensive framework for a systematic and self-consistent treatment of non-equilibrium (possibly coherent) atomic-state kinetics and high-resolution (possibly overlapping) spectral-line shapes. This should enable a unified treatment for a broad class of atomic processes in laboratory and astrophysical plasmas covering extensive density and field regimes. Published by Elsevier B.V.
C1 USN, Res Lab, Ctr Computat Mat Sci, Mat Sci & Technol Div, Washington, DC 20375 USA.
RP Jacobs, VL (reprint author), USN, Res Lab, Ctr Computat Mat Sci, Mat Sci & Technol Div, Code 6390,4555 Overlook Ave S W, Washington, DC 20375 USA.
EM jacobs@dave.nrl.navy.mil
FU Department of Energy; Office of Naval Research
FX This investigation has been carried out in collaboration with
colleagues, who are cited in the references, and it has benefited
substantially as a result of helpful discussions with many scientists at
academic institutions and research laboratories. This investigation has
been supported by the Department of Energy and by the Office of Naval
Research.
NR 34
TC 7
Z9 7
U1 0
U2 1
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 1574-1818
J9 HIGH ENERG DENS PHYS
JI High Energy Density Phys.
PD JUN
PY 2009
VL 5
IS 1-2
BP 80
EP 88
DI 10.1016/j.hedp.2009.03.001
PG 9
WC Physics, Fluids & Plasmas
SC Physics
GA 686FF
UT WOS:000284681500012
ER
PT J
AU Breslow, LA
Ratwani, RM
Trafton, JG
AF Breslow, Leonard A.
Ratwani, Raj M.
Trafton, J. Gregory
TI Cognitive Models of the Influence of Color Scale on Data Visualization
Tasks
SO HUMAN FACTORS
LA English
DT Article
ID VISUAL-SEARCH; COMPLEX VISUALIZATIONS; INFORMATION; DISPLAYS
AB Objective: Computational models of identification and relative comparison tasks performed on color-coded data visualizations were presented and evaluated against two experiments. In this context, the possibility of a dual-use color scale, useful for both tasks, was explored, and the use of the legend was a major focus. Background: Multicolored scales are superior to ordered brightness scales for identification tasks, such as determining the absolute numeric value of a represented item, whereas ordered brightness scales are superior for relative comparison tasks, such as determining which of two represented items has a greater value. Method: Computational models were constructed for these tasks, and their predictions were compared with the results of two experiments. Results: The models fit the experimental results well. A multicolored, brightness-ordered dual-use scale supported high accuracy on both tasks and fast responses on a comparison task but relatively slower responses on the identification task. Conclusion: Identification tasks are solved by a serial visual search of the legend, whose speed and accuracy are a function of the discriminability of the color scales. Comparison tasks with multicolored scales are performed by a parallel search of the legend; with brightness scales, comparison tasks are generally solved by a direct comparison between colors on the visualization, without reference to the legend. Finally, it is possible to provide users a dual-use color scale effective on both tasks. Application: Trade-offs that must typically be made in the design of color-coded visualizations between speed and accuracy or between identification and comparison tasks may be mitigated.
C1 [Breslow, Leonard A.; Trafton, J. Gregory] USN, Res Lab, Washington, DC 20375 USA.
[Ratwani, Raj M.] George Mason Univ, Fairfax, VA 22030 USA.
RP Breslow, LA (reprint author), USN, Res Lab, Code 5515,4555 Overlook Ave SW, Washington, DC 20375 USA.
EM breslow@aic.nrl.navy.mil
FU U.S. Office of Naval Research [N0001405WX2011, N0001405WX30020]
FX The authors of this article are U. S. government employees and created
the article within the scope of their employment. As a work of the U. S.
federal government, the content of the article is in the public domain.
NR 31
TC 4
Z9 5
U1 5
U2 9
PU SAGE PUBLICATIONS INC
PI THOUSAND OAKS
PA 2455 TELLER RD, THOUSAND OAKS, CA 91320 USA
SN 0018-7208
J9 HUM FACTORS
JI Hum. Factors
PD JUN
PY 2009
VL 51
IS 3
BP 321
EP 338
DI 10.1177/0018720809338286
PG 18
WC Behavioral Sciences; Engineering, Industrial; Ergonomics; Psychology,
Applied; Psychology
SC Behavioral Sciences; Engineering; Psychology
GA 484AI
UT WOS:000269014700005
PM 19750795
ER
PT J
AU Moon, JS
Curtis, D
Hu, M
Wong, D
McGuire, C
Campbell, PM
Jernigan, G
Tedesco, JL
VanMil, B
Myers-Ward, R
Eddy, C
Gaskill, DK
AF Moon, J. S.
Curtis, D.
Hu, M.
Wong, D.
McGuire, C.
Campbell, P. M.
Jernigan, G.
Tedesco, J. L.
VanMil, B.
Myers-Ward, R.
Eddy, C., Jr.
Gaskill, D. K.
TI Epitaxial-Graphene RF Field-Effect Transistors on Si-Face 6H-SiC
Substrates
SO IEEE ELECTRON DEVICE LETTERS
LA English
DT Article
DE Graphene; radio frequency (RF); Si MOSFET; transistors
AB We report dc and the first-ever measured small-signal radio-frequency (RF) performance of epitaxial-graphene RF field-effect transistors (FETs), where the epitaxial-graphene layer is formed by graphitization of 2-in-diameter Si-face semi-insulating 6H-SiC (0001) substrates. The gate is processed with a metal gate on top of a high-k Al2O3 gate dielectric deposited via an atomic-layer-deposition method. With a gate length (L-g) of 2 mu m and an extrinsic transconductance of 148 mS/mm, the extrinsic current-gain cutoff frequency (f(T)) is measured as 4.4 GHz, yielding an extrinsic f(T) . L-g of 8.8 GHz . mu m. This is comparable to that of Si NMOS. With graphene FETs fabricated in a layout similar to those of Si n-MOSFETs, ON-state current density increases dramatically to as high as 1.18 A/mm at Vds = 1 V and 3 A/mm at Vds = 5 V. The current drive level is the highest ever observed in any semiconductor FETs.
C1 [Moon, J. S.; Curtis, D.; Hu, M.; Wong, D.; McGuire, C.] HRL Labs LLC, Malibu, CA 90265 USA.
[Campbell, P. M.; Jernigan, G.; Tedesco, J. L.; VanMil, B.; Myers-Ward, R.; Eddy, C., Jr.; Gaskill, D. K.] USN, Res Labs, Washington, DC 20375 USA.
RP Moon, JS (reprint author), HRL Labs LLC, Malibu, CA 90265 USA.
EM jmoon@hrl.com; dcurtiz@hrl.com; mHu@hrl.com; wswong@hrl.com;
cmcguire@hrl.com; paul.campbell@nrl.navy.mil;
glenn.jernigan@nrl.navy.mil; joseph.tedesco.ctr@nrl.navy.mil;
brenda.vanmil.ctr@nrl.navy.mil; rachael.myers-ward@nrl.navy.mil;
chip.eddy@nrl.navy.mil; kurt.gaskill@nrl.navy.mil
FU Defense Advanced Research Projects Agency (DARPA) [N66001-08-C-2048]
FX This work was supported by the Defense Advanced Research Projects Agency
(DARPA) CERA Program, monitored by Drs. Michael Fritze at DARPA and
Cindy Hanson at the Space and Naval Warfare Systems Command (SPAWAR),
under Contract N66001-08-C-2048. The review of this letter was arranged
by Editor S.-H. Ryu.
NR 13
TC 210
Z9 213
U1 6
U2 107
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 0741-3106
J9 IEEE ELECTR DEVICE L
JI IEEE Electron Device Lett.
PD JUN
PY 2009
VL 30
IS 6
BP 650
EP 652
DI 10.1109/LED.2009.2020699
PG 3
WC Engineering, Electrical & Electronic
SC Engineering
GA 450NX
UT WOS:000266409200036
ER
PT J
AU Hazelton, DW
Selvamanickam, V
Duval, JM
Larbalestier, DC
Markiewicz, WD
Weijers, HW
Holtz, RL
AF Hazelton, Drew W.
Selvamanickam, Venkat
Duval, Jason M.
Larbalestier, David C.
Markiewicz, William Denis
Weijers, Hubertus W.
Holtz, Ronald L.
TI Recent Developments in 2G HTS Coil Technology
SO IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
LA English
DT Article
DE High-temperature superconductors; magnetic field; stress control;
superconducting coils
ID SUPERCONDUCTORS; MAGNETS
AB Recent developments in 2G HTS coil technology are presented highlighting the ability of 2G HTS wire to function under difficult operating conditions without degradation. The challenges of use in various coil constructions and applications are discussed. Several applications where the conductor is subjected to high stress levels include high field insert coils and rotating machinery. While these applications present different challenges, the ability of the conductor to operate under high stress levels has been demonstrated in both direct sample measurement and test coils. The high winding current density that is available with SuperPower's thin 2G HTS wire was utilized in a high field insert coil demonstration generating central fields in excess of 26.8 T [1]. The ability of the wire to be tailored (stabilization, insulation, ac losses) to fit various operating parameters will also be discussed.
C1 [Hazelton, Drew W.; Selvamanickam, Venkat; Duval, Jason M.] SuperPower Inc, Schenectady, NY 12304 USA.
[Larbalestier, David C.; Markiewicz, William Denis; Weijers, Hubertus W.] NHMFL FSU, Tallahassee, FL 32310 USA.
[Holtz, Ronald L.] Naval Res Lab, Washington, DC 20375 USA.
RP Hazelton, DW (reprint author), SuperPower Inc, Schenectady, NY 12304 USA.
EM dhazelton@superpower-inc.com
RI Larbalestier, David/B-2277-2008
OI Larbalestier, David/0000-0001-7098-7208
FU Title III Office [F33615-03-C-5508]; U.S. Department of Energy
[4000042167]; Air Force Research Laboratory [FA8650-04-C-2476]; Office
of Naval Research [N0014-07-C-0091]; NSF Cooperative Agreement
[DMR-0084173]; State of Florida; DOE
FX Manuscript received August 26, 2008. First published June 23, 2009;
current version published July 15, 2009. This work was supported in part
by the Title III Office under Contract F33615-03-C-5508, U.S. Department
of Energy through UT-Battelle under Subcontract 4000042167, the Air
Force Research Laboratory under Contract FA8650-04-C-2476, the Office of
Naval Research under Contract N0014-07-C-0091. Work performed at the
NHMFL was supported in part by NSF Cooperative Agreement DMR-0084173, by
the State of Florida, and by the DOE.
NR 11
TC 83
Z9 85
U1 0
U2 19
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855 USA
SN 1051-8223
J9 IEEE T APPL SUPERCON
JI IEEE Trans. Appl. Supercond.
PD JUN
PY 2009
VL 19
IS 3
BP 2218
EP 2222
DI 10.1109/TASC.2009.2018791
PG 5
WC Engineering, Electrical & Electronic; Physics, Applied
SC Engineering; Physics
GA 474KL
UT WOS:000268282100265
ER
PT J
AU Thieme, CLH
Voccio, JP
Gagnon, KJ
Claassen, JH
AF Thieme, Cornelis L. H.
Voccio, John P.
Gagnon, Kevin J.
Claassen, John H.
TI Use of Second Generation HTS Wire in Filter Inductor Coils
SO IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
LA English
DT Article
DE AC loss; high-temperature superconductors; superconducting inductor
coils
AB AMSC's process for manufacturing Second Generation (2G) YBCO High Temperature Superconductor wire provides the flexibility to engineer practical 2G conductors with various architectures. For applications with high frequency ac components, a stainless steel stabilizer is used to minimize eddy current losses. An example of such an application is the so-called Buck Inductor, a filter inductor carrying a DC current onto which a 5 KHz ac current is superimposed. Previously we reported on the development and initial testing of the first 2G HTS toroid for this application. We demonstrated a strong reduction of the ac losses with a DC bias current. In this work, we present results on a toroid using a different double pancake design with better cooling. This design allows operation of the double pancake in liquid nitrogen at high frequencies without heating effects.
C1 [Thieme, Cornelis L. H.; Voccio, John P.; Gagnon, Kevin J.] Amer Superconductor, Devens, MA 01434 USA.
[Claassen, John H.] Naval Res Lab, Washington, DC 20375 USA.
RP Thieme, CLH (reprint author), Amer Superconductor, Devens, MA 01434 USA.
EM cthieme@amsc.com; jvoccio@amsc.com; kgagnon@mail.chem.tamu.edu;
john.claassen@nrl.navy.mil
RI Gagnon, Kevin/C-1247-2009
FU Defense Advanced Research Projects Agency; Naval Research Laboratory
FX Manuscript received August 25, 2008. First published May 12, 2009;
current version published July 15, 2009. This work was supported by the
Defense Advanced Research Projects Agency and the Naval Research
Laboratory.
NR 7
TC 1
Z9 1
U1 0
U2 3
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855 USA
SN 1051-8223
J9 IEEE T APPL SUPERCON
JI IEEE Trans. Appl. Supercond.
PD JUN
PY 2009
VL 19
IS 3
BP 2241
EP 2244
DI 10.1109/TASC.2009.2018243
PG 4
WC Engineering, Electrical & Electronic; Physics, Applied
SC Engineering; Physics
GA 474KL
UT WOS:000268282100270
ER
PT J
AU Johnson, JT
Burkholder, RJ
Toporkov, JV
Lyzenga, DR
Plant, WJ
AF Johnson, Joel T.
Burkholder, Robert J.
Toporkov, Jakov V.
Lyzenga, David R.
Plant, William J.
TI A Numerical Study of the Retrieval of Sea Surface Height Profiles From
Low Grazing Angle Radar Data
SO IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING
LA English
DT Article
DE Ocean remote sensing; rough surfaces; sea surfaces
ID FORWARD-BACKWARD METHOD; ROUGH SURFACES; OCEAN SURFACE; SPECTRAL
ACCELERATION; APERTURE RADAR; WAVE SPECTRA; SCATTERING; BACKSCATTER;
MODULATION; SIMULATIONS
AB A numerical study of the retrieval of sea surface height profiles from low grazing angle radar observations is described. The study is based on a numerical method for electromagnetic scattering from 1-D rough sea profiles, combined with the "improved linear representation" of Creamer et al. for simulating weakly nonlinear sea surface hydrodynamics. Numerical computations are performed for frequencies from 2975 to 3025 MHz so that simulated radar pulse returns are achieved. The geometry utilized models a radar with an antenna height of 14 m, observing the sea surface at ranges from 520 to 1720 m. The low grazing angles of this configuration produce significant shadowing of the sea surface, and standard analytical theories of sea scattering are not directly applicable. Three approaches for retrieving sea height profile information are compared. The first method uses a statistical relationship between the surface height and the computed radar cross sections versus range (an incoherent measurement). A second method uses the phase difference between scattering measurements in two vertically separated antennas ("vertical interferometry) in the retrieval. The final technique retrieves height profiles from variations in the apparent Doppler frequency (coherent measurements) versus range and requires that time-stepped simulations be performed. The relative advantages and disadvantages of each of the three approaches are examined and discussed.
C1 [Johnson, Joel T.; Burkholder, Robert J.] Ohio State Univ, Dept Elect & Comp Engn, Electrosci Lab, Columbus, OH 43212 USA.
[Toporkov, Jakov V.] USN, Res Lab, Washington, DC 20375 USA.
[Lyzenga, David R.] Univ Michigan, Dept Naval Architecture & Marine Engn, Ann Arbor, MI 48109 USA.
[Plant, William J.] Univ Washington, Appl Phys Lab, Seattle, WA 98105 USA.
RP Johnson, JT (reprint author), Ohio State Univ, Dept Elect & Comp Engn, Electrosci Lab, Columbus, OH 43212 USA.
EM johnson@ece.osu.edu; rjb@esl.eng.ohio-state.edu;
jakov.toporkov@nrl.navy.mil; lyzenga@umich.edu; plant@apl.washington.edu
FU Office of Naval Research [N00014-05-1-0537]
FX The authors would like to thank the Office of Naval Research for support
under the MURI project "Optimal vessel performance in nonlinearly
evolving wave fields" (N00014-05-1-0537) and the MHPCC for use of
parallel computing resources.
NR 36
TC 37
Z9 40
U1 3
U2 12
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 JUN
PY 2009
VL 47
IS 6
BP 1641
EP 1650
DI 10.1109/TGRS.2008.2006833
PG 10
WC Geochemistry & Geophysics; Engineering, Electrical & Electronic; Remote
Sensing; Imaging Science & Photographic Technology
SC Geochemistry & Geophysics; Engineering; Remote Sensing; Imaging Science
& Photographic Technology
GA 450NW
UT WOS:000266409100007
ER
PT J
AU Liu, QH
Liao, XJ
Li, H
Stack, JR
Carin, L
AF Liu, Qiuhua
Liao, Xuejun
Li, Hui
Stack, Jason R.
Carin, Lawrence
TI Semisupervised Multitask Learning
SO IEEE TRANSACTIONS ON PATTERN ANALYSIS AND MACHINE INTELLIGENCE
LA English
DT Article
DE Multitask learning; Bayesian; Dirichlet process; semisupervised
ID MULTIPLE TASKS; CLASSIFICATION; PRIORS; MODELS
AB Context plays an important role when performing classification and, in this paper, we examine context from two perspectives. First, the classification of items within a single task is placed within the context of distinct concurrent or previous classification tasks (multiple distinct data collections). This is referred to as multitask learning (MTL) and is implemented here in a statistical manner, using a simplified form of the Dirichlet process. In addition, when performing many classification tasks one has simultaneous access to all unlabeled data that must be classified and, therefore, there is an opportunity to place the classification of any one feature vector within the context of all unlabeled feature vectors; this is referred to as semisupervised learning. In this paper, we integrate MTL and semisupervised learning into a single framework, thereby exploiting two forms of contextual information. Results are presented on a "toy" example to demonstrate the concept, and the algorithm is also applied to three real data sets.
C1 [Liu, Qiuhua; Liao, Xuejun; Carin, Lawrence] Duke Univ, Dept Elect & Comp Engn, Durham, NC 27708 USA.
[Li, Hui] Innovat Grp Inc, Durham, NC 27703 USA.
[Stack, Jason R.] One Liberty Ctr, Off Naval Res, Arlington, VA 22203 USA.
RP Liu, QH (reprint author), Duke Univ, Dept Elect & Comp Engn, Durham, NC 27708 USA.
EM ql@ece.duke.edu; xjliao@ece.duke.edu; hli@siginnovations.com;
jason.stack@navy.mil; lcarin@ece.duke.edu
NR 42
TC 22
Z9 23
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 0162-8828
J9 IEEE T PATTERN ANAL
JI IEEE Trans. Pattern Anal. Mach. Intell.
PD JUN
PY 2009
VL 31
IS 6
BP 1074
EP 1086
DI 10.1109/TPAMI.2008.296
PG 13
WC Computer Science, Artificial Intelligence; Engineering, Electrical &
Electronic
SC Computer Science; Engineering
GA 431YF
UT WOS:000265100000009
PM 19372611
ER
PT J
AU Lock, EH
Saveliev, AV
Kennedy, LA
AF Lock, Evgeniya H.
Saveliev, Alexei V.
Kennedy, Lawrence A.
TI Influence of Electrode Characteristics on DC Point-to-Plane Breakdown in
High-Pressure Gaseous and Supercritical Carbon Dioxide
SO IEEE TRANSACTIONS ON PLASMA SCIENCE
LA English
DT Article
DE Breakdown; carbon dioxide; microplasma; supercritical fluid (SCF)
ID PULSED CORONA DISCHARGE; SCALE; INITIATION; SOLVATION; FLUIDS; PHASE
AB Discharges in supercritical conditions is a new field in plasma science. The supercritical phase has distinctive properties that may allow for unique plasma processing applications. In this paper, we study plasma generation in a point-to-plane geometry in the micrometer scale. The effects of needle characteristics, including tip diameter and plane electrode surface roughness, on discharge initiation are studied. The influence of pressure, temperature, and fluid density on breakdown voltage and reduced breakdown electric field are also investigated.
C1 [Lock, Evgeniya H.; Saveliev, Alexei V.; Kennedy, Lawrence A.] Univ Illinois, Dept Mech & Ind Engn, Chicago, IL 60607 USA.
[Kennedy, Lawrence A.] Ohio State Univ, Dept Mech Engn, Columbus, OH 43210 USA.
RP Lock, EH (reprint author), USN, Res Lab, Washington, DC 20375 USA.
EM evgeniya.lock@nrl.navy.mil; asaveliev@ncsu.edu; lkennedy@uic.edu
RI Saveliev, Alexei/G-4981-2011
FU National Science Foundation [CTS-0522578]
FX This work was supported by the National Science Foundation under Grant
CTS-0522578.
NR 19
TC 5
Z9 5
U1 0
U2 1
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855 USA
SN 0093-3813
J9 IEEE T PLASMA SCI
JI IEEE Trans. Plasma Sci.
PD JUN
PY 2009
VL 37
IS 6
BP 1078
EP 1083
DI 10.1109/TPS.2009.2018844
PG 6
WC Physics, Fluids & Plasmas
SC Physics
GA 456UY
UT WOS:000266878100004
ER
PT J
AU Chen, HW
Zhang, ZW
Huber, E
Chao, CC
Wang, H
Dasch, GA
Ching, WM
AF Chen, Hua-Wei
Zhang, Zhiwen
Huber, Erin
Chao, Chien-Chung
Wang, Hui
Dasch, Gregory A.
Ching, Wei-Mei
TI Identification of Cross-Reactive Epitopes on the Conserved 47-Kilodalton
Antigen of Orientia tsutsugamushi and Human Serine Protease
SO INFECTION AND IMMUNITY
LA English
DT Article
ID RICKETTSIA-TSUTSUGAMUSHI; SCRUB TYPHUS; PEPTIDE-SYNTHESIS; ANTIBODIES;
EHRLICHIOSIS; AUTOANTIBODIES; EXPRESSION; INFECTION; LEVEL; FEVER
AB Orientia tsutsugamushi is the causative agent of scrub typhus. One of the protein antigens of this species, the conserved 47-kDa protein (HtrA), has been shown to induce an antibody response in patients and can provide protective immunity against live challenge by Orientia in mice. Pepscan experiments identified many peptide epitope clusters in different parts of this protein. The majority of the most reactive epitopes are located at the C terminus of the protein (from amino acid 333 to amino acid 430). Protein sequence analysis revealed that the 47-kDa protein contains a trypsin domain and has sequence homology to human serine protease HtrA1 (hHtrA1). As the 47-kDa protein is a potential vaccine candidate and its ability to induce autoimmunity is a concern, the reactivity of scrub typhus patient sera with purified recombinant 47-kDa and hHtrA1 proteins was tested. A significant percentage (> 20%) of scrub typhus patient sera reacted strongly with recombinant hHTRA1 and two of the antigenic polypeptide epitopes in hHtrA1. These findings suggest that the safety of the full-length 47-kDa antigen as a vaccine candidate is a significant issue due to its cross-reactivity with a human protein, which may also contribute to autoimmune responses or enhanced pathology in some scrub typhus patients.
C1 [Chen, Hua-Wei; Zhang, Zhiwen; Huber, Erin; Chao, Chien-Chung; Wang, Hui; Ching, Wei-Mei] USN, Med Res Ctr, Silver Spring, MD 20910 USA.
[Chen, Hua-Wei; Zhang, Zhiwen; Huber, Erin; Wang, Hui; Ching, Wei-Mei] Uniformed Serv Univ Hlth Sci, Bethesda, MD 20814 USA.
[Dasch, Gregory A.] Ctr Dis Control & Prevent, Natl Ctr Zoonot Vector Borne & Enter Dis, Atlanta, GA USA.
RP Ching, WM (reprint author), USN, Med Res Ctr, 503 Robert Grant Ave, Silver Spring, MD 20910 USA.
EM wei.ching@med.navy.mil
RI Chen, Hua-Wei/A-8018-2011; Chao, Chien-Chung/A-8017-2011;
OI Dasch, Gregory/0000-0001-6090-1810
FU Naval Medical Research Center research [6000.RAD1. J. A0310]
FX The views expressed in this paper are those of the authors and do not
necessarily reflect the official policy or position of the Department of
the Navy, the Department of Defense, the Centers for Disease Control and
Prevention, the Department of Health and Human Services, or the U. S.
Government. Chien-Chung Chao, Gregory A. Dasch, and Wei-Mei Ching are
employees of the U. S. Government.
NR 26
TC 10
Z9 10
U1 0
U2 0
PU AMER SOC MICROBIOLOGY
PI WASHINGTON
PA 1752 N ST NW, WASHINGTON, DC 20036-2904 USA
SN 0019-9567
J9 INFECT IMMUN
JI Infect. Immun.
PD JUN
PY 2009
VL 77
IS 6
BP 2311
EP 2319
DI 10.1128/IAI.01298-08
PG 9
WC Immunology; Infectious Diseases
SC Immunology; Infectious Diseases
GA 447HO
UT WOS:000266182400008
PM 19289508
ER
PT J
AU Babich, YV
Feigelson, BN
AF Babich, Yu. V.
Feigelson, B. N.
TI Distribution of N+ centers in synthetic diamond single crystals
SO INORGANIC MATERIALS
LA English
DT Article
ID NITROGEN AGGREGATION; INFRARED-ABSORPTION; GROWTH-RATE; NICKEL;
TRANSFORMATION
AB The distribution of N+ centers in synthetic diamond grown by the temperature-gradient method in a nickel-containing metal-carbon system has been studied using FTIR mapping. The results clearly demonstrate that the distribution has a complex nature and is directly related to the sectorial structure of the crystal and linear growth rate, whose effects are analyzed with consideration for literature data. The aggregation rate of N+ single nitrogen is slower than that of neutral substitutional nitrogen (C centers).
C1 [Babich, Yu. V.] Russian Acad Sci, Siberian Div, Inst Geol & Mineral, Novosibirsk 630090, Russia.
[Feigelson, B. N.] USN, Res Lab, Geo Ctr, Washington, DC 20375 USA.
RP Babich, YV (reprint author), Russian Acad Sci, Siberian Div, Inst Geol & Mineral, Pr Akad Koptyuga 3, Novosibirsk 630090, Russia.
EM BabichYV@uiggm.nsc.ru
RI Babich, Yuri/A-5655-2014
NR 19
TC 7
Z9 7
U1 0
U2 5
PU MAIK NAUKA/INTERPERIODICA/SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013-1578 USA
SN 0020-1685
J9 INORG MATER+
JI Inorg. Mater.
PD JUN
PY 2009
VL 45
IS 6
BP 616
EP 619
DI 10.1134/S0020168509060077
PG 4
WC Materials Science, Multidisciplinary
SC Materials Science
GA 458RM
UT WOS:000267041200007
ER
PT J
AU Shen, YC
Eggleston, K
AF Shen, Yu-Chu
Eggleston, Karen
TI The effect of soft budget constraints on access and quality in hospital
care
SO INTERNATIONAL JOURNAL OF HEALTH CARE FINANCE & ECONOMICS
LA English
DT Article
DE Hospitals; Safety net services; Quality; Bail-outs; Soft budget
constraints
ID ACUTE MYOCARDIAL-INFARCTION; HEALTH-CARE; TECHNOLOGY ADOPTION; PATIENT
SAFETY; MANAGED CARE; OWNERSHIP; OUTCOMES; REIMBURSEMENT; SURVIVAL;
SERVICES
AB Given an increasingly complex web of financial pressures on providers, studies have examined how hospitals' overall financial health affects different aspects of hospital operations. In our study, we develop an empirical proxy for the concept of soft budget constraint (SBC, Kornai, Kyklos 39:3-30, 1986) as an alternative financial measure of a hospital's overall financial health and offer an initial estimate of the effect of SBCs on hospital access and quality. An organization has a SBC if it can expect to be bailed out rather than shut down. Our conceptual model predicts that hospitals facing softer budget constraints will be associated with less aggressive cost control, and their quality may be better or worse, depending on the scope for damage to quality from noncontractible aspects of cost control. We find that hospitals with softer budget constraints are less likely to shut down safety net services. In addition, hospitals with softer budget constraints appear to have better mortality outcomes for elderly heart attack patients.
C1 [Shen, Yu-Chu] USN, Postgrad Sch, Monterey, CA USA.
[Shen, Yu-Chu] NBER, Cambridge, MA 02138 USA.
[Eggleston, Karen] Stanford Univ, Stanford, CA 94305 USA.
RP Shen, YC (reprint author), USN, Postgrad Sch, Monterey, CA USA.
EM yshen@nps.edu
NR 28
TC 11
Z9 11
U1 2
U2 14
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 1389-6563
J9 INT J HEALTH CARE FI
JI Int. J. Health Care Financ. Econ.
PD JUN
PY 2009
VL 9
IS 2
BP 211
EP 232
DI 10.1007/s10754-009-9066-2
PG 22
WC Business, Finance; Economics; Health Policy & Services
SC Business & Economics; Health Care Sciences & Services
GA 444EQ
UT WOS:000265963900008
PM 19408114
ER
PT J
AU Eggleston, K
Shen, YC
Lu, MS
Li, CD
Wang, J
Yang, Z
Zhang, J
AF Eggleston, Karen
Shen, Yu-Chu
Lu, Mingshan
Li, Congdong
Wang, Jian
Yang, Zhe
Zhang, Jing
TI Soft budget constraints in China: Evidence from the Guangdong hospital
industry
SO INTERNATIONAL JOURNAL OF HEALTH CARE FINANCE & ECONOMICS
LA English
DT Article
DE China; Hospitals; Soft budget constraints
ID REFORM; ENTERPRISES; OWNERSHIP
AB Using data from 276 general acute hospitals in the Pearl River Delta region of Guangdong Province from 2002 and 2004, we construct a preliminary metric of budget constraint softness. We find that, controlling for hospital size, ownership, and other factors, a Chinese hospital's probability of receiving government financial support is inversely associated with the hospital's previous net revenue, an association consistent with soft budget constraints.
C1 [Eggleston, Karen] Stanford Univ, Walter H Shorenstein Asia Pacific Res Ctr, Stanford, CA 94305 USA.
[Shen, Yu-Chu] USN, Postgrad Sch, Grad Sch Business & Publ Policy, Monterey, CA 93943 USA.
[Lu, Mingshan] Univ Calgary, Calgary, AB, Canada.
[Li, Congdong] Jinan Univ, Sch Management, Guangzhou, Guangdong, Peoples R China.
[Wang, Jian] Shandong Univ, Ctr Hlth Management & Policy, Jinan 250100, Peoples R China.
[Yang, Zhe] Guangdong Bur, Hlth Stat Ctr, Guangzhou, Guangdong, Peoples R China.
[Zhang, Jing] Univ Maryland, Baltimore, MD 21201 USA.
RP Eggleston, K (reprint author), Stanford Univ, Walter H Shorenstein Asia Pacific Res Ctr, 616 Serra St,Encina Hall E311, Stanford, CA 94305 USA.
EM karene@stanford.edu; yshen@nps.edu; lu@ucalgary.ca;
wangjiannan@sdu.edu.cn; zhangjing2005@gmail.com
NR 17
TC 2
Z9 2
U1 1
U2 8
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 1389-6563
J9 INT J HEALTH CARE FI
JI Int. J. Health Care Financ. Econ.
PD JUN
PY 2009
VL 9
IS 2
BP 233
EP 242
DI 10.1007/s10754-009-9067-1
PG 10
WC Business, Finance; Economics; Health Policy & Services
SC Business & Economics; Health Care Sciences & Services
GA 444EQ
UT WOS:000265963900009
PM 19399608
ER
PT J
AU Christov, I
Jordan, PM
AF Christov, Ivan
Jordan, P. M.
TI Shock and traveling wave phenomena on an externally damped, non-linear
string
SO INTERNATIONAL JOURNAL OF NON-LINEAR MECHANICS
LA English
DT Article
DE Non-linear string; Shock wave; MUSCL-Hancock scheme; Traveling wave
solution; Lambert W-function
ID LAMBERT-W-FUNCTION; TRANSVERSE ACCELERATION-WAVES; DISCONTINUITY WAVES;
PROPAGATION; EQUATION; GROWTH; MEDIA; DECAY; GREEN; MODEL
AB We examine the propagation of shocks and traveling wave phenomena on a one-dimensional string that is executing finite-amplitude, transverse vibrations in a resisting medium. As part of our study, we develop an approach that allows us to describe, albeit approximately, the evolution and propagation of a shock front using analytical methods. In addition, exact traveling wave solutions, one of which involves the Lambert W-function, of the string's equation of motion are determined and analyzed. Lastly, a possible new form of the solution to the linearized problem is presented and extensions and other applications of the present work are briefly discussed. Published by Elsevier Ltd.
C1 [Jordan, P. M.] USN, Res Lab, Stennis Space Ctr, MS 39529 USA.
[Christov, Ivan] Northwestern Univ, Dept Engn Sci & Appl Math, Evanston, IL 60208 USA.
RP Jordan, PM (reprint author), USN, Res Lab, Code 7181, Stennis Space Ctr, MS 39529 USA.
EM pjordan@nrlssc.navy.mil
RI Christov, Ivan/B-9418-2008
OI Christov, Ivan/0000-0001-8531-0531
FU ONR/NRL [PE 061153N]
FX This paper is dedicated to Prof. Ph. Boulanger. The authors would like
to thank Profs. M. Destrade and G. Saccomandi for their extremely kind
invitation to participate in this special issue. The authors would also
like to thank an anonymous referee for his/her instructive comments and
helpful suggestions. P.M.J. was supported by ONR/NRL funding (PE
061153N).
NR 54
TC 9
Z9 9
U1 1
U2 2
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0020-7462
J9 INT J NONLIN MECH
JI Int. J. Non-Linear Mech.
PD JUN
PY 2009
VL 44
IS 5
BP 511
EP 519
DI 10.1016/j.ijnonlinmec.2008.12.004
PG 9
WC Mechanics
SC Mechanics
GA 450UT
UT WOS:000266427300009
ER
PT J
AU Bogle, LL
AF Bogle, Lori Lyn
TI Black Sailor, White Navy: Racial Unrest in the Fleet during the Vietnam
War Era
SO JOURNAL OF AMERICAN HISTORY
LA English
DT Book Review
C1 [Bogle, Lori Lyn] USN Acad, Annapolis, MD 21402 USA.
RP Bogle, LL (reprint author), USN Acad, Annapolis, MD 21402 USA.
NR 1
TC 0
Z9 0
U1 0
U2 0
PU ORGANIZATION AMER HISTORIANS
PI BLOOMINGTON
PA 112 N BRYAN ST, BLOOMINGTON, IN 47408 USA
SN 0021-8723
J9 J AM HIST
JI J. Am. Hist.
PD JUN
PY 2009
VL 96
IS 1
BP 293
EP 294
PG 2
WC History
SC History
GA 460GI
UT WOS:000267175800141
ER
PT J
AU Thomas, KE
Tanzer, DJ
AF Thomas, Karin E.
Tanzer, David J.
TI Visual acuity recovery after late traumatic femtosecond laser in situ
keratomileusis flap loss
SO JOURNAL OF CATARACT AND REFRACTIVE SURGERY
LA English
DT Article
ID DISLOCATION 4 YEARS; AIR BAG INJURY; CORNEAL FLAP; REFRACTIVE SURGERY;
LASIK; EYES; MANAGEMENT; STABILITY; REPAIR; MODEL
AB We report a case of traumatic flap loss from a fingernail 2 months after femtosecond laser-assisted laser in situ keratomileusis. On presentation, the patient's uncorrected visual acuity (UCVA) was 20/400 and complete flap avulsion was noted. Irrigation and treatment with mitomycin-C were done immediately, and a bandage contact lens was inserted. The epithelium healed completely over 1 week. One month after the injury, the UCVA was 20/15(-2). This case illustrates an excellent outcome from a potentially devastating event following refractive surgery in a military member.
C1 [Thomas, Karin E.] USN, Hosp Camp Pendleton, Camp Pendleton, CA 92055 USA.
USN, San Diego Med Ctr, San Diego, CA 92152 USA.
RP Thomas, KE (reprint author), USN, Hosp Camp Pendleton, POB 555191, Camp Pendleton, CA 92055 USA.
EM flykarin@aol.com
NR 32
TC 1
Z9 2
U1 0
U2 0
PU ELSEVIER SCIENCE INC
PI NEW YORK
PA 360 PARK AVE SOUTH, NEW YORK, NY 10010-1710 USA
SN 0886-3350
J9 J CATARACT REFR SURG
JI J. Cataract. Refract. Surg.
PD JUN
PY 2009
VL 35
IS 6
BP 1134
EP 1137
DI 10.1016/j.jcrs.2009.01.033
PG 4
WC Ophthalmology; Surgery
SC Ophthalmology; Surgery
GA 455WF
UT WOS:000266797900038
PM 19465302
ER
PT J
AU Faulkner, SD
Kwon, YW
Bartlett, S
Rasmussen, EA
AF Faulkner, S. D.
Kwon, Y. W.
Bartlett, S.
Rasmussen, E. A.
TI Study of composite joint strength with carbon nanotube reinforcement
SO JOURNAL OF MATERIALS SCIENCE
LA English
DT Article
ID FRACTURE-TOUGHNESS; LOAD-TRANSFER; INTERFACE
AB In order to strengthen the interface of a composite scarf joint, this study investigated the benefits of using locally applied carbon nanotubes to reinforce a carbon fiber composite scarf joint. The effect of carbon nanotubes on enhancing the fracture toughness and interface strength was investigated by performing Mode I and Mode II fracture tests with and without carbon nanotubes applied locally at the joint interface. Furthermore, the effects of seawater absorption and different carbon nanotube concentration values on Mode II fracture were investigated. Finally, a partial application of carbon nanotubes only near the crack tip area was considered. During the study, the image correlation technique was used to examine the fracture mechanisms altered by the introduction of carbon nanotubes. The experimental study showed that an optimal amount of carbon nanotubes could increase the fracture toughness of the composite joint interface significantly, especially for Mode II, including a physical change in the fracture mechanism.
C1 [Faulkner, S. D.; Kwon, Y. W.] Naval Postgrad Sch, Dept Mech & Aeronaut Engn, Monterey, CA USA.
[Bartlett, S.; Rasmussen, E. A.] Naval Surface Warfare Ctr, Struct & Composite Div, Bethesda, MD USA.
RP Kwon, YW (reprint author), Naval Postgrad Sch, Dept Mech & Aeronaut Engn, Monterey, CA USA.
EM ywkwon@nps.edu
NR 19
TC 13
Z9 13
U1 1
U2 10
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 JUN
PY 2009
VL 44
IS 11
BP 2858
EP 2864
DI 10.1007/s10853-009-3378-y
PG 7
WC Materials Science, Multidisciplinary
SC Materials Science
GA 434TZ
UT WOS:000265298300018
ER
PT J
AU Yoon, MK
Heider, D
Gillespie, JW
Ratcliffe, CP
Crane, RM
AF Yoon, Myung-Keun
Heider, Dirk
Gillespie, John W., Jr.
Ratcliffe, Colin P.
Crane, Roger M.
TI Local Damage Detection with the Global Fitting Method Using Mode Shape
Data in Notched Beams
SO JOURNAL OF NONDESTRUCTIVE EVALUATION
LA English
DT Article
DE Vibration; Damage detection; Global fitting method; Natural frequency;
Mode shape; Structural irregularity index
AB Damage in a structure alters its dynamic characteristics such as frequency response functions and modal parameters. The present study extends the 'gapped smoothing method' for identifying the location of structural damage in a beam by introducing the 'global fitting method.' The procedure uses only the mode shape data obtained from a damaged structure with an assumption that the undamaged structure is homogeneous and uniform and the damage size is small. The sensitivity of damage detection algorithm is evaluated using a finite element analysis (FEA) of a few beams having a notch. Structural irregularity index (SSI) was used to identify the locations and size of damage. The ability to detect damage was enhanced by averaging SSI over a few modes. A statistical procedure was applied to identify damage with respect to background noise. A methodology and quantitative criteria was developed to select the optimum excitation grid spacing. Numerical results showed that the present method can detect both narrow (13 mm width) and wide damage (126 mm width) associated with less than 3% local thickness reductions. Experimental results validated the numerical results and detected the depth to thickness ratio about 41% and 35% for the wide and narrow notch beams, respectively. The present method showed improved resolution on detecting the location and size of damage in a beam over the previous methods using mode shape data reported in literature.
C1 [Yoon, Myung-Keun] S Dakota Sch Mines & Technol, Dept Mech Engn, Rapid City, SD 57701 USA.
[Heider, Dirk] Univ Delaware, Dept Elect & Comp Engn, Ctr Composite Mat, Newark, DE 19716 USA.
[Gillespie, John W., Jr.] Univ Delaware, Dept Mat Sci & Engn, Ctr Composite Mat, Dept Civil & Environm Engn, Newark, DE 19716 USA.
[Ratcliffe, Colin P.] USN Acad, Dept Mech Engn, Annapolis, MD 21402 USA.
[Crane, Roger M.] USN, Ctr Surface Warfare, Carderock Div, Bethesda, MD 20817 USA.
RP Yoon, MK (reprint author), S Dakota Sch Mines & Technol, Dept Mech Engn, 501 E St Joseph St, Rapid City, SD 57701 USA.
EM myung-keun.yoon@sdsmt.edu
NR 25
TC 16
Z9 16
U1 1
U2 9
PU SPRINGER/PLENUM PUBLISHERS
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 0195-9298
J9 J NONDESTRUCT EVAL
JI J. Nondestruct. Eval.
PD JUN
PY 2009
VL 28
IS 2
BP 63
EP 74
DI 10.1007/s10921-009-0048-6
PG 12
WC Materials Science, Characterization & Testing
SC Materials Science
GA 457KF
UT WOS:000266926200003
ER
PT J
AU Christman, MS
Chen, JT
Holmes, NM
AF Christman, Matthew S.
Chen, Jamesina T.
Holmes, Nicholas M.
TI Obstructive complications of lichen sclerosus
SO JOURNAL OF PEDIATRIC UROLOGY
LA English
DT Review
DE Lichen sclerosus; Balanitis xerotica obliterans; Phimosis; Meatal
stenosis; Renal failure; Boys
AB Objective: Young males with lichen sclerosus (LS) commonly present with phinnosis; complete urinary obstruction has also been described in this population, but is much rarer. We present the case report of a boy with acute renal failure secondary to urethral obstruction caused by LS, with a review of the literature regarding the occurrence of complete urinary obstruction and renal failure associated with this disease process.
Materials and methods: A comprehensive review of the literature was conducted using MEDLINE (R) and EMBASE to characterize the association of lichen sclerosus with significant obstructive complications of the urinary tract.
Results: The true incidence of LS is unknown. Reported rates have ranged from 10% to 95% of boys presenting with phimosis. Our review identified 14 cases of complicated urinary obstruction (seven in children) and two cases of renal failure secondary to lichen sclerosus (both in boys).
Conclusions: Distinctive features make this inflammatory process identifiable to the astute physician, such that new onset of phimosis in a school-age boy should raise clinical suspicion of the diagnosis. Successful outcomes, with medical and/or surgical therapy, are commonplace in this cohort. If undiagnosed, however, progression of LS can lead to significant morbidity in the form of renal failure. Published by Elsevier Ltd on behalf of Journal of Pediatric Urology Company.
C1 [Christman, Matthew S.] USN, San Diego Med Ctr, San Diego, CA 92134 USA.
[Chen, Jamesina T.] Vista Community Clin, Vista, CA USA.
[Holmes, Nicholas M.] Rady Childrens Hosp, Pediat Urol Div, San Diego, CA USA.
RP Christman, MS (reprint author), USN, San Diego Med Ctr, 34800 Bob Wilson Dr, San Diego, CA 92134 USA.
EM matthew.christman@med.navy.mil
NR 25
TC 7
Z9 7
U1 0
U2 0
PU ELSEVIER SCI LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
SN 1477-5131
J9 J PEDIATR UROL
JI J. Pediatr. Urol
PD JUN
PY 2009
VL 5
IS 3
BP 165
EP 169
DI 10.1016/j.jpurol.2008.12.007
PG 5
WC Pediatrics; Urology & Nephrology
SC Pediatrics; Urology & Nephrology
GA V19DW
UT WOS:000208054100003
PM 19186109
ER
PT J
AU Jenkins, HH
Spencer, ED
Weissgerber, AJ
Osborne, LA
Pellegrini, JE
AF Jenkins, Herman H.
Spencer, Eliot D.
Weissgerber, Alicia J.
Osborne, Lisa A.
Pellegrini, Joseph E.
TI Correlating an 11-Point Verbal Numeric Rating Scale to a 4-Point Verbal
Rating Scale in the Measurement of Pruritis
SO JOURNAL OF PERIANESTHESIA NURSING
LA English
DT Article
DE itch; neuraxial opioids; pruritis; measurement scale; PACU
AB Pruritis, the subjective sensation of itch, can be a difficult symptom to assess and treat. Evaluating levels of patient discomfort across populations has proven to be challenging because of a lack of a standardized measurement tool to quantify levels of itch. The most widely used tool is the 4-point verbal rating scale (VRS-4), but others use an 11-point verbal numeric rating scale (VNRS-11). Therefore, the purpose of our study was to correlate a VNRS-11 to a VRS-4 for the assessment of pruritis. Fifty parturients were enrolled in this correlational study. Each subject's level of pruritis was measured at five specific intervals after administration of intrathecal opioids. The scales were administered one minute apart in random order Data analysis demonstrated a strong correlation between these two scales, (r = .910 to .853) indicating that each verbal descriptor on the VRS-4 could readily be substituted with a quantifiable range on the VNRS-11.
C1 [Osborne, Lisa A.] USN, Sch Hlth Sci, Nurse Corps Anesthesia Program, San Diego, CA 92134 USA.
[Pellegrini, Joseph E.] USN, Nurse Corps Anesthesia Program, Bethesda, MD 20084 USA.
RP Osborne, LA (reprint author), USN, Sch Hlth Sci, Nurse Corps Anesthesia Program, 34101 Farenholt Ave, San Diego, CA 92134 USA.
EM lisa.osborne@med.navy.mil
FU Chief Bureau of Medicine and Surgery, Navy Department, Washington, D.C.
[NSHSBETHINST 6000.41A]
FX The Chief Bureau of Medicine and Surgery, Navy Department, Washington,
D.C., Clinical Investigation Program sponsored this report#S-06-133 as
required by NSHSBETHINST 6000.41A. The views expressed in this article
are those of the authors and do not reflect the official policy or
position of the Department of the Navy Department of Defense, or the
United States Government.
NR 15
TC 5
Z9 5
U1 0
U2 3
PU ELSEVIER SCIENCE INC
PI NEW YORK
PA 360 PARK AVE SOUTH, NEW YORK, NY 10010-1710 USA
SN 1089-9472
J9 J PERIANESTH NURS
JI J. PeriAnesthesia Nurs.
PD JUN
PY 2009
VL 24
IS 3
BP 152
EP 155
DI 10.1016/j.jopan.2009.01.010
PG 4
WC Nursing
SC Nursing
GA V17JH
UT WOS:000207933000004
PM 19500747
ER
PT J
AU Thoppil, PG
Hogan, PJ
AF Thoppil, Prasad G.
Hogan, Patrick J.
TI On the Mechanisms of Episodic Salinity Outflow Events in the Strait of
Hormuz
SO JOURNAL OF PHYSICAL OCEANOGRAPHY
LA English
DT Article
ID PERSIAN-GULF; VERTICAL DIFFUSIVITIES; OCEAN TURBULENCE; ARABIAN GULF;
RED-SEA; WATER; HEAT; PART; CIRCULATION; EVAPORATION
AB Observations in the Strait of Hormuz (26.26 degrees N, 56.08 degrees E) during 1997-98 showed substantial velocity fluctuations, accompanied by episodic changes in the salinity outflow events with amplitude varying between 1 and 2 psu on time scales of several days to a few weeks. These events are characterized by a rapid increase in salinity followed by an abrupt decline. The mechanisms behind these strong pulses of salinity events are investigated with a whigh-resolution (similar to 1 km) Hybrid Coordinate Ocean Model (HYCOM) with particular reference to the year 2005. In accordance with the observations, the simulated salinity events are characterized by strong coherence between the enhanced flows in zonal and meridional directions. It is inferred that most of the simulated and observed outflow variability is associated with the continuous formation of strong mesoscale cyclonic eddies, whose origin can be traced upstream to around 26 degrees N, 55.5 degrees E. These cyclonic eddies have a diameter of about 63 km and have a remnant of Persian Gulf water (PGW) in their cores, which is eroded by lateral mixing as the eddies propagate downstream at a translation speed of 4.1 cm s(-1). The primary process that acts to generate mesoscale cyclones results from the barotropic instability of the exchange circulation through the Strait of Hormuz induced by fluctuations in the wind stress forcing. The lack of salinity events and cyclogenesis in a model experiment with no wind stress forcing further confirms the essential ingredients required for the development of strong cyclones and the associated outflow variability.
C1 [Thoppil, Prasad G.; Hogan, Patrick J.] USN, Ocean Monitoring & Predict Syst Sect, Res Lab, Stennis Space Ctr, MS 39529 USA.
[Thoppil, Prasad G.] Univ So Mississippi, Dept Marine Sci, Stennis Space Ctr, MS USA.
RP Thoppil, PG (reprint author), USN, Ocean Monitoring & Predict Syst Sect, Res Lab, Code 7323, Stennis Space Ctr, MS 39529 USA.
EM thoppil@nrlssc.navy.mil
FU Office of Naval Research (ONR)
FX This paper is a contribution to the coastal ocean nesting studies
project sponsored by the Office of Naval Research (ONR) and is also a
contribution to the NRL project Slope to Shelf Energetics and Exchange
Dynamics (SEED), under program element 601153N. The simulations were
performed on IBM-SP4 workstations at the Naval Oceanographic Office
under a grant of computer time from the DoD High Performance Computer
Modernization Office (HPCMO). Alan Wallcraft is recognized for making a
substantial contribution to this effort through his work on model
development and his computer expertise. Sherwin Ladner from PSI/NRL is
acknowledged for the processing of MODIS SST images. We are extremely
grateful to Williams Johns and Fengchao Yao of the University of Miami
for sharing the observations, and Frank Bub for drifter data from the
Naval Oceanographic Office (NAVOCEANO). The authors wish to thank two
anonymous referees for their valuable suggestions that helped in
improving the manuscript. QuikSCAT data are produced by Remote Sensing
Systems and sponsored by the NASA Ocean Vector Winds Science Team. Data
are available online (www.remss.com). MODIS data were downloaded from
the POET Web site (http://poet.jpl.nasa.gov/).
NR 20
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U1 0
U2 2
PU AMER METEOROLOGICAL SOC
PI BOSTON
PA 45 BEACON ST, BOSTON, MA 02108-3693 USA
SN 0022-3670
J9 J PHYS OCEANOGR
JI J. Phys. Oceanogr.
PD JUN
PY 2009
VL 39
IS 6
BP 1340
EP 1360
DI 10.1175/2008JPO3941.1
PG 21
WC Oceanography
SC Oceanography
GA 470EV
UT WOS:000267958800004
ER
PT J
AU Hallock, ZR
Teague, WJ
Jarosz, E
AF Hallock, Z. R.
Teague, W. J.
Jarosz, E.
TI Subinertial Slope-Trapped Waves in the Northeastern Gulf of Mexico
SO JOURNAL OF PHYSICAL OCEANOGRAPHY
LA English
DT Article
ID TOPOGRAPHIC ROSSBY WAVES; CONTINENTAL-SLOPE; CURRENT VARIABILITY; SHELF;
PROPAGATION; CANYON; OCEAN; MODEL
AB Current velocity from moored arrays of acoustic Doppler current profilers (ADCPs) deployed on the outer shelf and slope, south of Mobile Bay in the northeastern Gulf of Mexico, shows evidence of alongslope, generally westward-propagating subinertial baroclinic Kelvin waves with periods of about 16 and 21 days, amplitudes of 5-10 cm s(-1), and wavelengths of about 500 km. The observed waves were highly coherent over the slope between about 200 and 500 m and accounted for a significant amount of the current variability below 200 m. The source of the waves could be attributed to effects of the Loop Current on the west Florida slope but is more likely due to direct forcing by Loop Current-generated eddies impacting the experimental area.
C1 [Teague, W. J.; Jarosz, E.] USN, Res Lab, Stennis Space Ctr, MS 39529 USA.
[Hallock, Z. R.] Planning Syst Inc, Slidell, LA USA.
RP Teague, WJ (reprint author), USN, Res Lab, Stennis Space Ctr, MS 39529 USA.
EM teague@nrlssc.navy.mil
FU Office of Naval Research [0601153N (NRL-SSC Contribution
NRL/JA/7330-05-5172)]
FX This work was supported by the Office of Naval Research as part of the
Naval Research Laboratory's basic research project "Slope to Shelf
Energetics and Exchange Dynamics (SEED)'' under Program Element 0601153N
(NRL-SSC Contribution NRL/JA/7330-05-5172). The authors thank Bob Reid
and Ken Brink for helpful comments.
NR 24
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U1 0
U2 4
PU AMER METEOROLOGICAL SOC
PI BOSTON
PA 45 BEACON ST, BOSTON, MA 02108-3693 USA
SN 0022-3670
J9 J PHYS OCEANOGR
JI J. Phys. Oceanogr.
PD JUN
PY 2009
VL 39
IS 6
BP 1475
EP 1485
DI 10.1175/2009JPO3925.1
PG 11
WC Oceanography
SC Oceanography
GA 470EV
UT WOS:000267958800012
ER
PT J
AU Uneyama, T
Masubuchi, Y
Horio, K
Matsumiya, Y
Watanabe, H
Pathak, JA
Roland, CM
AF Uneyama, Takashi
Masubuchi, Yuichi
Horio, Kazushi
Matsumiya, Yumi
Watanabe, Hiroshi
Pathak, Jai A.
Roland, C. Michael
TI A Theoretical Analysis of Rheodielectric Response of Type-A Polymer
Chains
SO JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS
LA English
DT Article
DE cis-polyisoprene; cooperative effects; coupling; dielectric properties;
large amplitude oscillatory shear (LAOS); rheodielectric behavior;
steady shear flow; structure-property relations; type-A chain
ID RHEO-DIELECTRIC BEHAVIOR; ASYMMETRICALLY INVERTED DIPOLES; LINEAR
CIS-POLYISOPRENES; MOLECULAR-WEIGHT; NETWORK SIMULATIONS; ENTANGLED
POLYMERS; SHEAR-FLOW; DYNAMICS; RELAXATION; VISCOELASTICITY
AB For type-A polymer chains having type-A dipoles parallel along the chain backbone (such as cis-polyisoprene), a theoretical analysis was conducted for the rheodielectric response to relate this response to the chain dynamics. The rheodielectric response in the shear gradient direction (y direction) under steady shear was analyzed on the basis of a Langevin equation. It turned out that the relaxation time is exactly the same for the rheodielectric relaxation function and the end-to-end vector autocorrelation function defined in the shear gradient direction and that the relaxation mode distribution also coincides for these functions at least up to second order of the shear rate (corresponding to the lowest order of nonlinearities of these functions). Consequently, the Green-Kubo theorem holds satisfactorily, and the rheodielectric intensity is proportional to the squared chain size in y direction, < R(y)(2)>, averaged over the time-independent conformational distribution function under steady shear. The situation is more complicated under large amplitude oscillatory strain (LAOS) because the conformational distribution function f(LAOS) is synchronized with LAOS to oscillate at the LAOS frequency, Omega. The rheodielectric response under LAOS was found to detect this oscillation of f(LAOS) being coupled with the oscillation of the electric field, E(t) = E(0)sin omega t, and thus, split into a series of components oscillating at frequencies omega and omega +/- beta Omega (beta = 1, 2, ...). Consequently, the rheodielectric intensity under LAOS, evaluated from the component oscillating at (i), is no longer proportional to < R(y)(2)>. However, the relative mode distribution and relaxation time of this component can be directly related to those of the end-to-end vector correlation averaged over a nonoscillatory part of f(LAOS). (C) 2009 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys 47: 1039-1057, 2009
C1 [Uneyama, Takashi; Masubuchi, Yuichi; Horio, Kazushi; Matsumiya, Yumi; Watanabe, Hiroshi] Kyoto Univ, Inst Chem Res, Kyoto 611011, Japan.
[Pathak, Jai A.; Roland, C. Michael] USN, Res Lab, Div Chem, Washington, DC 20375 USA.
RP Watanabe, H (reprint author), Kyoto Univ, Inst Chem Res, Kyoto 611011, Japan.
EM hiroshi@scl.kyoto-u.ac.jp
RI Uneyama, Takashi/D-4105-2014; Masubuchi, Yuichi/C-2231-2008; Masubuchi,
Yuichi/B-6063-2008
OI Uneyama, Takashi/0000-0001-6607-537X; Masubuchi,
Yuichi/0000-0002-1306-3823; Masubuchi, Yuichi/0000-0002-1306-3823
NR 33
TC 10
Z9 10
U1 0
U2 16
PU JOHN WILEY & SONS INC
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN, NJ 07030 USA
SN 0887-6266
J9 J POLYM SCI POL PHYS
JI J. Polym. Sci. Pt. B-Polym. Phys.
PD JUN 1
PY 2009
VL 47
IS 11
BP 1039
EP 1057
DI 10.1002/polb.21708
PG 19
WC Polymer Science
SC Polymer Science
GA 450GC
UT WOS:000266388000001
ER
PT J
AU Kwon, YW
Jo, JC
AF Kwon, Y. W.
Jo, Jong Chull
TI Development of Weighted Residual Based Lattice Boltzmann Techniques for
Fluid-Structure Interaction Application
SO JOURNAL OF PRESSURE VESSEL TECHNOLOGY-TRANSACTIONS OF THE ASME
LA English
DT Article; Proceedings Paper
CT Pressure Vessels and Piping Conference of the
American-Society-of-Mechanical-Engineers
CY JUL 27-31, 2008
CL Chicago, IL
SP ASME, Pressure Vessels & Piping Div
DE beams (structures); finite element analysis; flow simulation; lattice
Boltzmann methods; shells (structures); structural engineering
ID FINITE-ELEMENT-ANALYSIS; UNDERWATER SHOCK; MODELS; FLOWS; FORMULATION;
SIMULATION; CFD
AB New computational techniques were developed for the analysis of fluid-structure interaction. The fluid flow was solved using the newly developed lattice Boltzmann methods, which could solve irregular shape of fluid domains for fluid-structure interaction. To this end, the weighted residual based lattice Boltzmann methods were developed. In particular, both finite element based and element-free based lattice Boltzmann techniques were developed for the fluid domain. Structures were analyzed using either beam or shell elements depending on the nature of the structures. Then, coupled transient fluid flow and structural dynamics were solved one after another for each time step. Numerical examples for both 2D and 3D fluid-structure interaction problems, as well as fluid flow only problems, were presented to demonstrate the developed techniques.
C1 [Kwon, Y. W.] USN, Postgrad Sch, Dept Mech & Astronaut Engn, Monterey, CA 93943 USA.
[Jo, Jong Chull] Korea Inst Nucl Safety, Dept Safety Issue Res, Taejon 305338, South Korea.
RP Kwon, YW (reprint author), USN, Postgrad Sch, Dept Mech & Astronaut Engn, Monterey, CA 93943 USA.
NR 37
TC 1
Z9 1
U1 0
U2 1
PU ASME-AMER SOC MECHANICAL ENG
PI NEW YORK
PA THREE PARK AVE, NEW YORK, NY 10016-5990 USA
SN 0094-9930
J9 J PRESS VESS-T ASME
JI J. Press. Vessel Technol.-Trans. ASME
PD JUN
PY 2009
VL 131
IS 3
AR 031304
DI 10.1115/1.3089494
PG 8
WC Engineering, Mechanical
SC Engineering
GA 441RT
UT WOS:000265788900016
ER
PT J
AU Shakeri, M
Maxeiner, E
Fu, T
Duncan, JH
AF Shakeri, Mostafa
Maxeiner, Eric
Fu, Thomas
Duncan, James H.
TI An Experimental Examination of the 2D+T Approximation
SO JOURNAL OF SHIP RESEARCH
LA English
DT Article
DE hydrodynamics (general); model testing; waves
AB Measurements of contact line height and longitudinal wave profiles from experiments with a three-dimensional naval ship model and experiments using a 2D+T wave maker with motions approximating the three-dimensional hull form are compared. The shape and maximum height of the contact line in the bow region are nearly the same in the two experiments, and the distance downstream along the hull over which the two measurements agree increases with increasing Froude number, F(n) = U(m)/root gL(m), where U(m) is the ship model speed, g is the acceleration of gravity, and L(m) is the ship model waterline length. The comparison of the longitudinal wave profile (wave cut) data from the two experiments shows fairly good agreement for wavelengths and amplitudes at the highest Froude number and the measurement position closest to the hull.
C1 [Shakeri, Mostafa; Maxeiner, Eric; Duncan, James H.] Univ Maryland, Dept Mech Engn, College Pk, MD 20742 USA.
[Maxeiner, Eric; Fu, Thomas] USN, Ctr Surface Warfare, Bethesda, MD 20084 USA.
RP Shakeri, M (reprint author), Univ Maryland, Dept Mech Engn, College Pk, MD 20742 USA.
FU Office of Naval Research [N00014-01-1-0868]
FX This work was supported by the Office of Naval Research under Grant
N00014-01-1-0868, Scientific Officer: Dr. Patrick Purtell.
NR 9
TC 7
Z9 7
U1 0
U2 1
PU SOC NAVAL ARCH MARINE ENG
PI JERSEY CITY
PA 601 PAVONIA AVENUE, JERSEY CITY, NJ 07306 USA
SN 0022-4502
J9 J SHIP RES
JI J. Ship Res.
PD JUN
PY 2009
VL 53
IS 2
BP 59
EP 67
PG 9
WC Engineering, Marine; Engineering, Civil
SC Engineering
GA 467XH
UT WOS:000267775900001
ER
PT J
AU Buttrey, SE
AF Buttrey, Samuel E.
TI An Excel Add-In for Statistical Process Control Charts
SO JOURNAL OF STATISTICAL SOFTWARE
LA English
DT Article
DE statistical process control; SPC; control charts; Excel
AB Statistical process control (SPC) descibes a widely-used set of approaches used to detect shifts in processes in, for example, manufacturing. Among these are "control charts". Control charts and other SPC techniques have been in use since at least the 1950s, and, because they are comparatively unsophisticated, are often used by management or operations personnel without formal statistical training. These personnel will often have experience with the popular spreadsheet program Excel, but may have less training on a mainstream statistical package. Base Excel does not provide the ability to draw control charts directly, although add-ins for that purpose are available for purchase.
We present a free add-in for Excel that draws the most common sorts of control charts. It follows the development of the textbook of Montgomery (2005), so it may be well-suited for instructional purposes.
C1 USN, Postgrad Sch, Dept Operat Res, Code OR Sb, Monterey, CA 93943 USA.
RP Buttrey, SE (reprint author), USN, Postgrad Sch, Dept Operat Res, Code OR Sb, Monterey, CA 93943 USA.
EM buttrey@nps.edu
NR 4
TC 3
Z9 3
U1 0
U2 1
PU JOURNAL STATISTICAL SOFTWARE
PI LOS ANGELES
PA UCLA DEPT STATISTICS, 8130 MATH SCIENCES BLDG, BOX 951554, LOS ANGELES,
CA 90095-1554 USA
SN 1548-7660
J9 J STAT SOFTW
JI J. Stat. Softw.
PD JUN
PY 2009
VL 30
IS 13
BP 1
EP 12
PG 12
WC Computer Science, Interdisciplinary Applications; Statistics &
Probability
SC Computer Science; Mathematics
GA 467AQ
UT WOS:000267708700001
ER
PT J
AU Britch, SC
Linthicum, KJ
Wynn, WW
Walker, TW
Farooq, M
Smith, VL
Robinson, CA
Lothrop, BB
Snelling, M
Gutierrez, A
Lothrop, HD
AF Britch, Seth C.
Linthicum, Kenneth J.
Wynn, Wayne W.
Walker, Todd W.
Farooq, Muhammad
Smith, Vincent L.
Robinson, Cathy A.
Lothrop, Branka B.
Snelling, Melissa
Gutierrez, Arturo
Lothrop, Hugh D.
TI EVALUATION OF BARRIER TREATMENTS ON NATIVE VEGETATION IN A SOUTHERN
CALIFORNIA DESERT HABITAT
SO JOURNAL OF THE AMERICAN MOSQUITO CONTROL ASSOCIATION
LA English
DT Article
DE Electrostatic sprayer; residual pesticide; mosquito-borne disease;
bifenthrin; Deployed War-fighter Protection Program (DWFP)
ID CULEX-QUINQUEFASCIATUS; AEDES-ALBOPICTUS; MALARIA VECTORS; RESIDUAL
SPRAY; INSECTICIDE; PERMETHRIN; FIELD; MALATHION; MOSQUITOS; FOLIAGE
AB Treating perimeters with residual insecticides for protection from mosquito vectors has shown promise. These barrier treatments are typically evaluated in temperate or tropical areas using abundant vegetation as a substrate. However, there is an emerging interest to develop this technology to protect deployed US troops in extreme desert environments with sparse vegetation, We used a remote desert area in the Coachella Valley, California, to 1) evaluate bifenthrin barrier treatments on native xeric vegetation and 2) compare treatments applied with electrostatic and conventional spray technologies. Through a combination of laboratory bioassays on treated and control vegetation sampled at specific intervals over 63 days, synchronized with field surveillance of mosquitoes, we measured the temporal pattern of bioactivity of bifenthrin barriers under natural hot, dry, and dusty desert conditions. Regardless of spray technology, mosquito catch in treated plots was about 80% lower than the catch in control plots I day after treatment. This reduction in mosquito numbers in treated plots declined each week after treatment but remained at about 40% lower than control plots after 28 days. Field data were corroborated by results from bioassays that showed significantly higher mosquito mortality on treated vegetation over controls out to 28 days postspray. We concluded that barrier treatments in desert environments, when implemented as part of a suite of integrated control measures, may offer a significant level of protection from mosquitoes for deployed troops. Given the comparable performance of the tested spray technologies, we discuss considerations for choosing a barrier treatment sprayer for military scenarios.
C1 [Britch, Seth C.; Linthicum, Kenneth J.; Wynn, Wayne W.] ARS, USDA, Ctr Med Agr & Vet Entomol, Gainesville, FL 32608 USA.
[Walker, Todd W.; Farooq, Muhammad; Smith, Vincent L.; Robinson, Cathy A.] USN, Entomol Ctr Excellence, Air Stn, Jacksonville, FL 32212 USA.
[Lothrop, Branka B.; Snelling, Melissa; Gutierrez, Arturo] Coachella Valley Mosquito & Vector Control Dist, Indio, CA 92201 USA.
[Lothrop, Hugh D.] Univ Calif Davis, Arbovirus Res Unit, Ctr Vectorborne Dis, Sch Vet Med, Davis, CA 95616 USA.
RP Britch, SC (reprint author), ARS, USDA, Ctr Med Agr & Vet Entomol, 1600 SW 23rd Dr, Gainesville, FL 32608 USA.
FU Department of Defense through the Deployed War Fighter Protection
Program; U.S. Department of Agriculture (USDA)-Agricultural Research
Service
FX This research was supported by the Department of Defense through the
Deployed War Fighter Protection Program, and the U.S. Department of
Agriculture (USDA)-Agricultural Research Service. The use of equipment
and products in this study does not constitute endorsement by the USDA,
the Department of Defense, or the US Navy. Technicians from the
Coachella Valley Mosquito and Vector Control District kindly provided
expert assistance in the field.
NR 46
TC 16
Z9 16
U1 0
U2 7
PU AMER MOSQUITO CONTROL ASSOC
PI EATONTOWN
PA P O BOX 234, EATONTOWN, NJ 07724-0234 USA
SN 8756-971X
J9 J AM MOSQUITO CONTR
JI J. Am. Mosq. Control Assoc.
PD JUN
PY 2009
VL 25
IS 2
BP 184
EP 193
DI 10.2987/08-5830.1
PG 10
WC Entomology
SC Entomology
GA 467DH
UT WOS:000267716500010
PM 19653501
ER
PT J
AU Kidd, C
Levizzani, V
Turk, J
Ferraro, R
AF Kidd, Chris
Levizzani, Vincenzo
Turk, Joe
Ferraro, Ralph
TI Satellite Precipitation Measurements for Water Resource Monitoring
SO JOURNAL OF THE AMERICAN WATER RESOURCES ASSOCIATION
LA English
DT Article
DE precipitation; remote sensing; hydrologic cycle; meteorology
ID PASSIVE MICROWAVE; RAINFALL ESTIMATION; INTERCOMPARISON PROJECT;
CLIMATOLOGY PROJECT; ALGORITHMS; VALIDATION; CLOUD; TRMM
AB Satellites offer an unrivaled vantage point to observe and measure Earth system processes and parameters. Observations of meteorological phenomena permit a more holistic view of the weather and climate that is not possible through conventional surface observations. Precipitation (rain and snow) in particular, benefit from such observations since precipitation is spatially and temporally highly variable: conventional gauge and radar measurements tend to be land-based with variable coverage. This paper provides an overview of the satellite systems that provide the observations, the techniques used to derive precipitation from the observations, and examples of the precipitation products available for users to access.
C1 [Ferraro, Ralph] CNR, Ist Sci Atmosfera & Clima, I-40126 Bologna, Italy.
[Ferraro, Ralph] NRL, Monterey, CA USA.
[Ferraro, Ralph] NOAA, Satellite Climate Studies Branch, College Pk, MD USA.
[Ferraro, Ralph] Univ Birmingham, Sch Geog Earth & Environm Sci, Birmingham B15 2TT, W Midlands, England.
EM C.Kidd@bham.ac.uk
RI Ferraro, Ralph/F-5587-2010; Levizzani, Vincenzo/A-9070-2013; Kidd,
Christopher/H-9910-2014
OI Ferraro, Ralph/0000-0002-8393-7135; Levizzani,
Vincenzo/0000-0002-7620-5235;
FU The Ivanhoe Foundation grants Fellowships
FX The authors would like to acknowledge the various members of the
satellite precipitation community that contribute material for the
furtherance of precipitation research. We would also like to thank data
providers, particularly EUMETSAT and NASA/TSDIS for the provision of
image data.
NR 29
TC 22
Z9 23
U1 1
U2 8
PU WILEY-BLACKWELL PUBLISHING, INC
PI MALDEN
PA COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA
SN 1093-474X
J9 J AM WATER RESOUR AS
JI J. Am. Water Resour. Assoc.
PD JUN
PY 2009
VL 45
IS 3
BP 567
EP 579
DI 10.1111/j.1752-1688.2009.00326.x
PG 13
WC Engineering, Environmental; Geosciences, Multidisciplinary; Water
Resources
SC Engineering; Geology; Water Resources
GA 449NA
UT WOS:000266336100003
ER
PT J
AU Jones, RW
Willoughby, HE
Montgomery, MT
AF Jones, Robert W.
Willoughby, Hugh E.
Montgomery, Michael T.
TI Alignment of Hurricane-like Vortices on f and beta Planes
SO JOURNAL OF THE ATMOSPHERIC SCIENCES
LA English
DT Article
ID WATER BAROTROPIC VORTEX; VERTICAL SHEAR; TROPICAL CYCLONES; NONLINEAR
MOTION; ROSSBY-WAVES; INTENSITY; FLOW; RESILIENCY; MODEL
AB A nonlinear, two-layer, vortex-tracking semispectral model (i.e., Fourier transformed in azimuth only) is used to study the evolution of dry, but otherwise hurricane-like, initially tilted vortices in quiescent surroundings on f and beta planes. The tilt projects onto vorticity asymmetries that are dynamically vortex Rossby waves.
Since the swirling wind in the principal mean vortex used here decays exponentially outside the eyewall, it has an initial potential vorticity (PV) minimum. The resulting reversal of PV gradient meets the necessary condition for inflectional (i.e., barotropic or baroclinic) instability. Thus, the vortex may be inflectionally stable or unstable. On an f plane, the tilt precesses relatively slowly because the critical radius, where the phase speeds of the waves match the mean swirling flow, is far from the center. An alternative Gaussian-like PV monopole that has a monotonic outward decrease of PV is stable to inflectional instability. It has a smaller critical radius and rapid tilt precession. Generally, vortices with fast tilt precession are more stable, as are stronger vortices in higher latitudes.
On a beta plane, the interaction between the symmetric vortex and the planetary PV gradient induces beta gyres that push the vortex poleward and westward. The interaction between the beta gyres and the planetary PV gradient may either create a PV minimum or intensify a minimum inherited from the initial condition. Thus, the nonlinear beta effect reduces the ability of the vortex to recover from initial tilt, relative to the same vortex on an f plane. This result contrasts with previous studies of barotropic vortices on f planes, where the linear and nonlinear solutions were nearly identical.
C1 [Willoughby, Hugh E.] Florida Int Univ, Dept Earth Sci, Miami, FL 33199 USA.
[Montgomery, Michael T.] USN, Postgrad Sch, Monterey, CA USA.
RP Willoughby, HE (reprint author), Florida Int Univ, Dept Earth Sci, Univ Pk Campus,PC 344, Miami, FL 33199 USA.
EM hugh.willoughby@fiu.edu
FU NSF [ATM-0454501]
FX The first two authors' efforts were supported through NSF Grant
ATM-0454501. We are also grateful to Frank Marks and the staff at NOAA's
Hurricane Research Division for administrative and computer support of
RWJ's participation.
NR 20
TC 1
Z9 1
U1 0
U2 4
PU AMER METEOROLOGICAL SOC
PI BOSTON
PA 45 BEACON ST, BOSTON, MA 02108-3693 USA
SN 0022-4928
J9 J ATMOS SCI
JI J. Atmos. Sci.
PD JUN
PY 2009
VL 66
IS 6
BP 1779
EP 1792
DI 10.1175/2008JAS2850.1
PG 14
WC Meteorology & Atmospheric Sciences
SC Meteorology & Atmospheric Sciences
GA 461JY
UT WOS:000267263300018
ER
PT J
AU Taylor, MK
Mujica-Parodi, LR
Padilla, GA
Markham, AE
Potterat, EG
Momen, N
Sander, TC
Larson, GE
AF Taylor, Marcus K.
Mujica-Parodi, Lilianne R.
Padilla, Genieleah A.
Markham, Amanda E.
Potterat, Eric G.
Momen, Nausheen
Sander, Todd C.
Larson, Gerald E.
TI Behavioral Predictors of Acute Stress Symptoms During Intense Military
Training
SO JOURNAL OF TRAUMATIC STRESS
LA English
DT Article
ID POSTTRAUMATIC-STRESS; UNCONTROLLABLE STRESS; PERFORMANCE; DISSOCIATION;
SURVIVORS; SEVERITY; CORTISOL; HEALTH
AB A better understanding of factors influencing human responses to acute stress is needed to enhance prevention and treatment of stress-related disorders. In the current study, the authors examined predictors of acute stress symptoms during intense military training in 35 men. In univariate and multivariate models, perceived stress, passive coping, and emotion-focused coping during daily living predicted acute stress symptoms in response to realistic survival training, whereas active coping and problem-focused coping did not. Baseline stress levels and coping styles, both of which may be modifiable, appear to play a fundamental role in the human response to acute uncontrollable stress. Additional research is needed to better elucidate the relative and interactive contributions of behavioral predictors of acute stress.
C1 [Taylor, Marcus K.] Naval Aerosp Med Res Lab, Operat Stress & Resilience Program, Pensacola, FL 32508 USA.
[Taylor, Marcus K.; Padilla, Genieleah A.; Markham, Amanda E.; Momen, Nausheen; Sander, Todd C.; Larson, Gerald E.] Naval Hlth Res Ctr, San Diego, CA USA.
[Mujica-Parodi, Lilianne R.] SUNY Stony Brook, Dept Biomed Engn, Stony Brook, NY USA.
[Potterat, Eric G.] Naval Special Warfare Ctr, San Diego, CA USA.
RP Taylor, MK (reprint author), Naval Aerosp Med Res Lab, Operat Stress & Resilience Program, 280 Fred Bauer St, Pensacola, FL 32508 USA.
EM marc.taylor@med.navy.mil
OI Mujica-Parodi, Lilianne/0000-0002-3752-5519
NR 24
TC 13
Z9 13
U1 0
U2 1
PU JOHN WILEY & SONS INC
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN, NJ 07030 USA
SN 0894-9867
J9 J TRAUMA STRESS
JI J. Trauma Stress
PD JUN
PY 2009
VL 22
IS 3
BP 212
EP 217
DI 10.1002/jts.20413
PG 6
WC Psychology, Clinical; Psychiatry
SC Psychology; Psychiatry
GA 468JR
UT WOS:000267814300007
PM 19479980
ER
PT J
AU Geden, CJ
Szumlas, DE
Walker, TW
AF Geden, Christopher J.
Szumlas, Daniel E.
Walker, Todd W.
TI Evaluation of commercial and field-expedient baited traps for house
flies, Musca domestica L. (Diptera: Muscidae)
SO JOURNAL OF VECTOR ECOLOGY
LA English
DT Article
DE House fly; Musca domestica; trapping
ID CHEMICAL ATTRACTANTS; FLY
AB A comparison of nine commercial baited fly traps on Florida dairy farms demonstrated that Terminator traps collected significantly more (13,323/trap) house flies (Musca domestica L.) than the others tested. Final Flight, Fly Magnet, and FliesBeGone traps collected intermediate numbers of flies (834-2,166), and relatively few were caught with ISCA, Advantage, Fermone Big Boy, Squeeze & Snap, or OakStump traps (<300). Terminator traps collected about twice as many flies (799.8/trap) as FliesBeGone traps (343.8) when each trap was baited with its respective attractant, but when the attractants were switched between the two trap types, collections were significantly lower (77-108) than was observed with traps baited with their respective attractant. Solutions of molasses were significantly more attractive to house flies than honey, maple syrup, or jaggery (date palm sugar). Field-expedient traps constructed from discarded PET water bottles were much less effective than commercial traps, but painting the tops of such traps with black spray paint resulted in a six-fold increase in trap capture. Journal of Vector Ecology 34 (1): 99-103. 2009.
C1 [Geden, Christopher J.] ARS, USDA, Ctr Med Agr & Vet Entomol, Gainesville, FL 32608 USA.
[Szumlas, Daniel E.; Walker, Todd W.] USN, Navy Entomol Ctr Excellence, Air Stn, Jacksonville, FL 32212 USA.
RP Geden, CJ (reprint author), ARS, USDA, Ctr Med Agr & Vet Entomol, 1600 SW 23rd Dr, Gainesville, FL 32608 USA.
FU Deployed Warfighters Protection Program
FX The authors thank H. McKeithen, A. Campbell, and A. Latorre for
assisting with field work and fly counts. This research was supported in
part by the Deployed Warfighters Protection Program.
NR 18
TC 6
Z9 8
U1 2
U2 15
PU SOC VECTOR ECOLOGY
PI CORONA
PA 1966 COMPTON AVE, CORONA, CA 92881 USA
SN 1081-1710
J9 J VECTOR ECOL
JI J. Vector Ecol.
PD JUN
PY 2009
VL 34
IS 1
BP 99
EP 103
DI 10.1111/j.1948-7134.2009.00012.x
PG 5
WC Entomology
SC Entomology
GA 531FY
UT WOS:000272650400012
PM 20836809
ER
PT J
AU Nissen, ME
AF Nissen, Mark E.
TI Knowledge management - systems implementation: lessons from the silicon
valley
SO KNOWLEDGE MANAGEMENT RESEARCH & PRACTICE
LA English
DT Book Review
C1 [Nissen, Mark E.] USN, Postgrad Sch, Monterey, CA 93943 USA.
RP Nissen, ME (reprint author), USN, Postgrad Sch, Monterey, CA 93943 USA.
RI Wang, Charles/B-5565-2011
OI Wang, Charles/0000-0001-9331-8437
NR 2
TC 0
Z9 0
U1 1
U2 3
PU PALGRAVE MACMILLAN LTD
PI BASINGSTOKE
PA BRUNEL RD BLDG, HOUNDMILLS, BASINGSTOKE RG21 6XS, HANTS, ENGLAND
SN 1477-8238
J9 KNOWL MAN RES PRACT
JI Knowl. Manag. Res. Pract.
PD JUN
PY 2009
VL 7
IS 2
BP 181
EP 182
DI 10.1057/kmrp.2009.3
PG 2
WC Information Science & Library Science; Management
SC Information Science & Library Science; Business & Economics
GA 662WQ
UT WOS:000282845400009
ER
PT J
AU Mace, NA
AF Mace, Nancy A.
TI The Market for Music in the Late Eighteenth Century and the Entry Books
of the Stationers' Company
SO LIBRARY
LA English
DT Article
C1 USN Acad, Annapolis, MD USA.
RP Mace, NA (reprint author), USN Acad, Annapolis, MD USA.
NR 20
TC 0
Z9 0
U1 0
U2 0
PU OXFORD UNIV PRESS
PI OXFORD
PA GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND
SN 0024-2160
J9 LIBRARY
JI Library
PD JUN
PY 2009
VL 10
IS 2
BP 157
EP 187
PG 31
WC Humanities, Multidisciplinary
SC Arts & Humanities - Other Topics
GA 479ZD
UT WOS:000268700100002
ER
PT J
AU Ngo, HT
Zhang, M
Tao, L
Asari, VK
AF Ngo, Hau T.
Zhang, Ming
Tao, Li
Asari, Vijayan K.
TI Design of a high performance architecture for real-time enhancement of
video stream captured in extremely low lighting environment
SO MICROPROCESSORS AND MICROSYSTEMS
LA English
DT Article
DE Image enhancement; Logarithmic approach; Luminance based approach;
Parallel processing; Pipelined/systolic architecture; FPGA; Real-time
video application
ID IMAGES
AB A high performance digital architecture for the implementation of a non-linear image enhancement technique is proposed in this paper. The image enhancement is based on a luminance dependent non-linear enhancement algorithm which achieves simultaneous dynamic range compression, colour consistency and lightness rendition. The algorithm provides better colour fidelity, enhances less noise, prevents the unwanted luminance drop at the uniform luminance areas, keeps the 'bright' background unaffected, and enhances the 'dark' objects in 'bright' background. The algorithm contains a large number of complex computations and thus it requires specialized hardware implementation for real-time applications. Systolic, pipelined and parallel design techniques are utilized effectively in the proposed FPGA-based architectural design to achieve real-time performance. Estimation techniques are also utilized in the hardware algorithmic design to achieve faster, simpler and more efficient architecture. The video enhancement system is implemented using Xilinx's multimedia development board that contains a VirtexII-X2000 FPGA and it is capable of processing approximately 67 Mega-pixels (Mpixels) per second. (C) 2009 Elsevier B.V. All rights reserved.
C1 [Zhang, Ming; Tao, Li; Asari, Vijayan K.] Old Dominion Univ, Dept Elect & Comp Engn, Norfolk, VA 23529 USA.
[Ngo, Hau T.] USN Acad, Dept Elect & Comp Engn, Annapolis, MD 21402 USA.
RP Asari, VK (reprint author), Old Dominion Univ, Dept Elect & Comp Engn, Norfolk, VA 23529 USA.
EM vasari@odu.edu
NR 10
TC 4
Z9 4
U1 0
U2 1
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0141-9331
EI 1872-9436
J9 MICROPROCESS MICROSY
JI Microprocess. Microsyst.
PD JUN
PY 2009
VL 33
IS 4
SI SI
BP 273
EP 280
DI 10.1016/j.micpro.2009.02.006
PG 8
WC Computer Science, Hardware & Architecture; Computer Science, Theory &
Methods; Engineering, Electrical & Electronic
SC Computer Science; Engineering
GA 461VU
UT WOS:000267301500006
ER
PT J
AU Gendernalik, JD
Sechriest, VF
AF Gendernalik, James D.
Sechriest, V. Franklin, II
TI Prepatellar Septic Bursitis: A Case Report of Skin Necrosis Associated
With Open Bursectomy
SO MILITARY MEDICINE
LA English
DT Article
ID OLECRANON; THERAPY
AB Patients with prepatellar septic bursitis are typically successfully managed nonoperatively with rest, compression, immobilization, aspiration, and antibiotics. Rarely, surgical excision of the bursa may be required for recalcitrant cases. Prepatellar bursectomy, however, has been associated with considerable risk of surgical-site morbidity. Although skin necrosis is frequently cited as a complication of open bursectomy, there is limited information in the medical literature on the etiology and management of this rare but serious complication.
C1 [Gendernalik, James D.; Sechriest, V. Franklin, II] USN, San Diego Med Ctr, Dept Orthopaed Surg, San Diego, CA 92134 USA.
RP Gendernalik, JD (reprint author), USN, San Diego Med Ctr, Dept Orthopaed Surg, 34800 Bob Wilson Dr, San Diego, CA 92134 USA.
NR 16
TC 2
Z9 3
U1 0
U2 0
PU ASSOC MILITARY SURG US
PI BETHESDA
PA 9320 OLD GEORGETOWN RD, BETHESDA, MD 20814 USA
SN 0026-4075
J9 MIL MED
JI Milit. Med.
PD JUN
PY 2009
VL 174
IS 6
BP 666
EP 669
PG 4
WC Medicine, General & Internal
SC General & Internal Medicine
GA 601LD
UT WOS:000278059900022
PM 19585786
ER
PT J
AU Mukhopadhyay, S
Akmal, A
Stewart, AC
Hsia, RC
Read, TD
AF Mukhopadhyay, Sanghamitra
Akmal, Arya
Stewart, Andrew C.
Hsia, Ru-ching
Read, Timothy D.
TI Identification of Bacillus anthracis Spore Component Antigens Conserved
across Diverse Bacillus cereus sensu lato Strains
SO MOLECULAR & CELLULAR PROTEOMICS
LA English
DT Article
ID GENOME SEQUENCE; CHLAMYDIA-PNEUMONIAE; PROTEOME ANALYSIS;
GENE-EXPRESSION; PROTEINS; SUBTILIS; THURINGIENSIS; EXOSPORIUM; SURFACE;
COAT
AB We sought to identify proteins in the Bacillus anthracis spore, conserved in other strains of the closely related Bacillus cereus group, that elicit an immune response in mammals. Two high throughput approaches were used. First, an in silico screening identified 200 conserved putative B. anthracis spore components. A total of 192 of those candidate genes were expressed and purified in vitro, 75 of which reacted with the rabbit immune sera generated against B. anthracis spores. The second approach was to screen for cross-reacting antigens in the spore proteome of 10 diverse B. cereus group strains. Two-dimensional electrophoresis resolved more than 200 protein spots in each spore preparation. About 72% of the protein spots were found in all the strains. 18 of these conserved proteins reacted against anti-B. anthracis spore rabbit immune sera, two of which (alanine racemase, Dal-1 and the methionine transporter, MetN) overlapped the set of proteins identified using the in silico screen. A conserved repeat domain protein (Crd) was the most immunoreactive protein found broadly across B. cereus sensu lato strains. We have established an approach for finding conserved targets across a species using population genomics and proteomics. The results of these screens suggest the possibility of a multiepitope antigen for broad host range diagnostics or therapeutics against Bacillus spore infection. Molecular & Cellular Proteomics 8: 1174-1191, 2009.
C1 [Mukhopadhyay, Sanghamitra; Akmal, Arya; Stewart, Andrew C.] USN, Med Res Ctr, Biol Def Res Directorate, Rockville, MD 20852 USA.
[Hsia, Ru-ching] Univ Maryland, Sch Dent, Dept Microbial Pathogenesis, Electron Microscopy Core Facil, Baltimore, MD 21201 USA.
RP Read, TD (reprint author), Emory GRA Genom Core, Div Infect Dis, Rm 335A,Whitehead Bldg,615 Michael St, Atlanta, GA 30322 USA.
EM timothydread@gmail.com
RI Read, Timothy/E-6240-2011
FU Joint Science and Technology Office-Chemical and Biological
Defense/Defense Threat Reduction [9Y0010_05_NM_B]
FX This work was supported by Joint Science and Technology Office-Chemical
and Biological Defense/Defense Threat Reduction Agency Grant
9Y0010_05_NM_B (to T. D. R.).
NR 67
TC 10
Z9 12
U1 0
U2 1
PU AMER SOC BIOCHEMISTRY MOLECULAR BIOLOGY INC
PI BETHESDA
PA 9650 ROCKVILLE PIKE, BETHESDA, MD 20814-3996 USA
SN 1535-9476
J9 MOL CELL PROTEOMICS
JI Mol. Cell. Proteomics
PD JUN
PY 2009
VL 8
IS 6
BP 1174
EP 1191
DI 10.1074/mcp.M800403-MCP200
PG 18
WC Biochemical Research Methods
SC Biochemistry & Molecular Biology
GA 457DB
UT WOS:000266904900002
PM 19208616
ER
PT J
AU Chervin, CN
Lubers, AM
Pettigrew, KA
Long, JW
Westgate, MA
Fontanella, JJ
Rolison, DR
AF Chervin, Christopher N.
Lubers, Alia M.
Pettigrew, Katherine A.
Long, Jeffrey W.
Westgate, Mark A.
Fontanella, John J.
Rolison, Debra R.
TI Making the Most of a Scarce Platinum-Group Metal: Conductive Ruthenia
Nanoskins on Insulating Silica Paper
SO NANO LETTERS
LA English
DT Article
ID ELECTROCHEMICAL CAPACITORS; OXIDE; RUO2; ELECTRODES; MECHANISM
AB Subambient thermal decomposition of ruthenium tetroxide from nonaqueous solution onto porous SiO(2) substrates creates 2-3 nm thick coatings of RuO(2) that cover the convex silica walls comprising the open, porous structure. The physical properties of the resultant self-wired nanoscale ruthenia significantly differ depending on the nature of the porous support. Previously reported RuO(2)-modified SiO(2) aerogels display electron conductivity of 5 x 10(-4) S cm(-1) (as normalized to the geometric factor of the insulating substrate, not the conducting ruthenia phase), whereas RuO(2)-modified silica filter paper at similar to 5 wt % RuO(2) exhibits similar to 0.5 S cm(-1). Electron conduction through the ruthenia phase as examined from -160 to 260 degrees C requires minimal activation energy, only 8 meV, from 20 to 260 degrees C. The RuO(2)(SiO(2)) fiber membranes are electrically addressable, capable of supporting fast electron-transfer reactions, express an electrochemical surface area of similar to 90 m(2) g(-1) RuO(2), and exhibit energy storage in which 90% of the total electron-proton charge is stored at the outer surface of the ruthenia phase. The electrochemical capacitive response indicates that the nanocrystalline RuO(2) coating can be considered to be a single-unit-thick layer of the conductive oxide, as physically stabilized by the supporting silica fiber.
C1 [Chervin, Christopher N.; Lubers, Alia M.; Pettigrew, Katherine A.; Long, Jeffrey W.; Rolison, Debra R.] USN, Res Lab, Surface Chem Branch, Washington, DC 20375 USA.
[Westgate, Mark A.; Fontanella, John J.] USN Acad, Dept Phys, Annapolis, MD 21402 USA.
RP Rolison, DR (reprint author), USN, Res Lab, Surface Chem Branch, Code 6170, Washington, DC 20375 USA.
EM rolison@nrl.navy.mil
FU Office of Naval Research
FX This work was supported by the Office of Naval Research. C.N.C.
(2006-2009) and K.A.P. (2005-2007) are NRC-NRL postdoctoral associates.
A.M.L. thanks Carnegie Mellon University for permission to extend her
undergraduate internship at the NRL for one year (2008).
NR 24
TC 22
Z9 22
U1 2
U2 27
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1530-6984
J9 NANO LETT
JI Nano Lett.
PD JUN
PY 2009
VL 9
IS 6
BP 2316
EP 2321
DI 10.1021/nl900528q
PG 6
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 457XL
UT WOS:000266969400022
PM 19507887
ER
PT J
AU McCallum, AT
Johnson, M
AF McCallum, Andrew T.
Johnson, Mark
TI Film Edge Nonlocal Spin Valves
SO NANO LETTERS
LA English
DT Article
ID ROOM-TEMPERATURE; TRANSPORT; SPINTRONICS; CURRENTS
AB Spintronics is a new paradigm for integrated digital electronics. Recently established as a niche for nonvolatile magnetic random access memory (MRAM), it offers new functionality while demonstrating low-power and high-speed performance. However, to reach high density spintronic technology must make a transition to the nanometer scale. Prototype devices are presently made using a planar geometry and have an area determined by the lithographic feature size, currently about 100 nm. Here we present a new nonplanar geometry in which one lateral dimension is given by a film thickness, on the order of 10 nm. With this new approach, cell sizes can shrink by an order of magnitude. The geometry is demonstrated with a nonlocal spin valve, where we study devices with an injector/detector separation much less than the spin diffusion length.
C1 [McCallum, Andrew T.; Johnson, Mark] USN, Res Lab, Washington, DC 20375 USA.
RP McCallum, AT (reprint author), USN, Res Lab, Washington, DC 20375 USA.
EM andrew.mccallum@nrl.navy.mil
FU Office of Naval Research [N00014-08WX-20705]
FX The authors are grateful for the support of the Office of Naval
Research, funding document N00014-08WX-20705, and they gratefully
acknowledge use of the facilities at the NRL Nanoscience Institute.
NR 22
TC 6
Z9 6
U1 0
U2 7
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1530-6984
J9 NANO LETT
JI Nano Lett.
PD JUN
PY 2009
VL 9
IS 6
BP 2350
EP 2353
DI 10.1021/nl900816p
PG 4
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 457XL
UT WOS:000266969400028
PM 19441791
ER
PT J
AU Biswas, A
Bayer, IS
Tripathi, A
Lock, EH
Walton, SG
Norton, MG
Avasthi, DK
Dahanayaka, DH
Bumm, LA
Suhir, E
Chowdhury, AR
Gupta, R
AF Biswas, A.
Bayer, I. S.
Tripathi, A.
Lock, E. H.
Walton, S. G.
Norton, M. G.
Avasthi, D. K.
Dahanayaka, D. H.
Bumm, L. A.
Suhir, E.
Chowdhury, A. R.
Gupta, R.
TI Fabrication of Nanodielectric BaTiO3 Composites Exhibiting Stable
Capacitor Functions in the High Frequency (> 100 MHz) Through
Interfacial Polarization Interactions
SO NANOSCIENCE AND NANOTECHNOLOGY LETTERS
LA English
DT Article
DE Nanodielectric Composites; Ferroelectric Nanoparticles; Vapor-Phase
Codeposition; Capacitors; Electronic Miniaturization; Dielectric
Constant.
AB We report fabrication of two different nanodielectric composites comprising a uniform blend of inorganic-organic and inorganic-inorganic dielectric materials by a simple and single-step method of electron-beam-assisted vapor-phase codeposition. The fabrication method allowed ambient temperature (similar to 35 degrees C) generation of well-crystallized ultra-fine (similar to 5 nm) to relatively larger (similar to 150 nm) barium titanate BTO nanoparticles in lithium fluoride (LiF) and poly(methylmethacrylate) (PMMA) dielectric matrices. No high temperature sintering was performed. The fabricated nanodielectric composites showed unique nanometric interfacial polarization properties that resulted in very promising high-frequency (>100 MHz) capacitor functions. The challenges of ferroelectric losses in the high-frequency were overcome and attributed to the possible interplay of polarization mechanisms contributed by the dielectric elements of nanostructured composites that allowed a frequency-independent capacitor performance. The best capacitor performance was achieved from as-deposited BTO-LiF nanodielectric systems that exhibited a flat capacitance density of about 10 nF/cm(2) with the self resonance frequency occurring at around 150 MHz along with a low loss tangent of about 0.1 at 100 MHz, thus verifying the high-quality of the device structures. The fabricated nanodielectric composites may be suitable for a variety of high-frequency applications in miniaturized electronic systems.
C1 [Biswas, A.; Dahanayaka, D. H.; Bumm, L. A.] Univ Oklahoma, Dept Phys & Astron, Ctr Semicond Phys Nanostruct, Norman, OK 73019 USA.
[Bayer, I. S.] Univ Illinois, Dept Aerosp Engn, Urbana, IL 61801 USA.
[Tripathi, A.; Avasthi, D. K.] IUAC, New Delhi 110067, India.
[Lock, E. H.; Walton, S. G.] USN, Res Lab, Div Plasma Phys, Washington, DC 20375 USA.
[Norton, M. G.] Washington State Univ, Sch Mech & Mat Engn, Pullman, WA 99164 USA.
[Suhir, E.] Univ Calif Santa Cruz, Dept Elect Engn, Santa Cruz, CA 95064 USA.
[Chowdhury, A. R.] Univ Alaska, Dept Phys, Fairbanks, AK 99709 USA.
[Gupta, R.] Univ Petr & Energy Studies, Dept Phys, Dehra Dun 248006, India.
RP Biswas, A (reprint author), Univ Oklahoma, Dept Phys & Astron, Ctr Semicond Phys Nanostruct, Norman, OK 73019 USA.
RI Avasthi, Devesh /D-4712-2013
FU Defense Microelectronics Activity (DMEA) [H94003-05-2-0501];
SPAWAR-DARPA [N66001-07-1-2001]; Office of Naval Research; NSF CAREER
[CHE-0239803]; Center for Physics in Nanostructures, NSF MRSEC
[DMR-0520550]
FX Part of this work was conducted at the University of Alaska, Fairbanks
with financial support from Defense Microelectronics Activity (DMEA)
under grant No. H94003-05-2-0501 and SPAWAR-DARPA Grant No.
N66001-07-1-2001. The work at NRL was supported by the Office of Naval
Research. The work at the University of Oklahoma was supported by the
NSF CAREER grant No. CHE-0239803 and the Center for Physics in
Nanostructures, NSF MRSEC No. DMR-0520550.
NR 24
TC 3
Z9 3
U1 0
U2 9
PU AMER SCIENTIFIC PUBLISHERS
PI VALENCIA
PA 26650 THE OLD RD, STE 208, VALENCIA, CA 91381-0751 USA
SN 1941-4900
J9 NANOSCI NANOTECH LET
JI Nanosci. Nanotechnol. Lett.
PD JUN
PY 2009
VL 1
IS 2
BP 111
EP 118
DI 10.1166/nnl.2009.1024
PG 8
WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary;
Physics, Applied
SC Science & Technology - Other Topics; Materials Science; Physics
GA V18OI
UT WOS:000208013700008
ER
PT J
AU Pratt, KA
DeMott, PJ
French, JR
Wang, Z
Westphal, DL
Heymsfield, AJ
Twohy, CH
Prenni, AJ
Prather, KA
AF Pratt, Kerri A.
DeMott, Paul J.
French, Jeffrey R.
Wang, Zhien
Westphal, Douglas L.
Heymsfield, Andrew J.
Twohy, Cynthia H.
Prenni, Anthony J.
Prather, Kimberly A.
TI In situ detection of biological particles in cloud ice-crystals
SO NATURE GEOSCIENCE
LA English
DT Article
ID FLOW DIFFUSION CHAMBER; ATMOSPHERIC PROCESSES; MASS-SPECTROMETRY;
MINERAL DUST; NUCLEI; MICROBIOLOGY
AB The impact of aerosol particles on the formation and properties of clouds is one of the largest remaining sources of uncertainty in climate change projections(1). Certain aerosol particles, known as ice nuclei, initiate ice-crystal formation in clouds, thereby affecting precipitation and the global hydrological cycle(2). Laboratory studies suggest that some mineral dusts and primary biological particles-such as bacteria, pollen and fungi-can act as ice nuclei(3). Here we use aircraft-aerosol time-of-flight spectrometry to directly measure the chemistry of individual cloud ice-crystal residues (obtained after evaporation of the ice), which were sampled at high altitude over Wyoming. We show that biological particles and mineral dust comprised most of the ice-crystal residues: mineral dust accounted for similar to 50% of the residues and biological particles for similar to 33%. Along with concurrent measurements of cloud ice-crystal and ice-nuclei concentrations, these observations suggest that certain biological and dust particles initiated ice formation in the sampled clouds. Finally, we use a global aerosol model to show long-range transport of desert dust, suggesting that biological particles can enhance the impact of desert dust storms on the formation of cloud ice.
C1 [DeMott, Paul J.; Prenni, Anthony J.] Colorado State Univ, Dept Atmospher Sci, Ft Collins, CO 80523 USA.
[Pratt, Kerri A.; Prather, Kimberly A.] Univ Calif San Diego, Dept Chem & Biochem, La Jolla, CA 92093 USA.
[French, Jeffrey R.; Wang, Zhien] Univ Wyoming, Dept Atmospher Sci, Laramie, WY 82071 USA.
[Westphal, Douglas L.] USN, Res Lab, Marine Meteorol Div, Monterey, CA 93943 USA.
[Heymsfield, Andrew J.] Natl Ctr Atmospher Res, Mesoscale & Microscale Meteorol Div, Boulder, CO 80305 USA.
[Twohy, Cynthia H.] Oregon State Univ, Dept Ocean & Atmospher Sci, Corvallis, OR 97331 USA.
[Prather, Kimberly A.] Univ Calif San Diego, Scripps Inst Oceanog, La Jolla, CA 92093 USA.
RP DeMott, PJ (reprint author), Colorado State Univ, Dept Atmospher Sci, Ft Collins, CO 80523 USA.
EM pdemott@lamar.colostate.edu; kprather@ucsd.edu
RI Pratt, Kerri/F-8025-2010; DeMott, Paul/C-4389-2011; Heymsfield,
Andrew/E-7340-2011; Wang, Zhien/F-4857-2011; Prather,
Kimberly/A-3892-2008
OI Pratt, Kerri/0000-0003-4707-2290; DeMott, Paul/0000-0002-3719-1889;
Prather, Kimberly/0000-0003-3048-9890
FU ICE-L; NSF [ATM-0650659, ATM-0611936, ATM-0645644, ATM-0612605];
A-ATOFMS [ATM-0321362]; Office of Naval Research [PE-0602435N]
FX NSF and NCAR are acknowledged for financial support of ICE-L, as well as
of A.J.H. K.A. Prather and K. A. Pratt acknowledge NSF for support of
ICE-L (ATM-0650659), A-ATOFMS development (ATM-0321362) and a graduate
research fellowship for K. A. Pratt. P.J.D. and A.J.P., J.R.F. and Z.W.,
and C. H. T. acknowledges support from NSF (ATM-0611936, ATM-0645644,
and ATM-0612605, respectively). The Office of Naval Research
(PE-0602435N) is acknowledged for financial support for D. L. W. Cloud
probe data were provided by NCAR/EOL under sponsorship of NSF
(http://data.eol.ucar.edu). S. Haimov (Univ.Wyoming) processed the radar
data. T. Eidhammer (NCAR) assisted with CFDC data analysis. C. Gaston
(UCSD) assisted with the P. syringae A-ATOFMS data collection; J. Dixon
and R. Dowen III (UCSD) provided the P. syringae cultures. S.
Kreidenweis (Colorado State Univ.) is thanked for discussions. The
authors acknowledge the NOAA ARL for the provision of HYSPLIT
(http://www.arl.noaa.gov/ready.html).
NR 25
TC 183
Z9 186
U1 8
U2 90
PU NATURE PUBLISHING GROUP
PI NEW YORK
PA 75 VARICK ST, 9TH FLR, NEW YORK, NY 10013-1917 USA
SN 1752-0894
J9 NAT GEOSCI
JI Nat. Geosci.
PD JUN
PY 2009
VL 2
IS 6
BP 397
EP 400
DI 10.1038/NGEO521
PG 4
WC Geosciences, Multidisciplinary
SC Geology
GA 452MD
UT WOS:000266543200014
ER
PT J
AU Chen, Y
Nadi, NS
Chavko, M
Auker, CR
McCarron, RM
AF Chen, Ye
Nadi, N. Suzan
Chavko, Mikulas
Auker, Charles R.
McCarron, Richard M.
TI Microarray Analysis of Gene Expression in Rat Cortical Neurons Exposed
to Hyperbaric Air and Oxygen
SO NEUROCHEMICAL RESEARCH
LA English
DT Article
DE Microarray; Neuron; Oxidative stress; Hyperoxia; Hyperbaric O(2)
ID CHEMOKINE RECEPTOR CXCR4; CENTRAL-NERVOUS-SYSTEM; HYPEROXIC LUNG INJURY;
HEME OXYGENASE-1; FREE-RADICALS; INCREASED RESISTANCE; NEONATAL-RATS;
NITRIC-OXIDE; BRAIN-INJURY; DNA-DAMAGE
AB To gain a global view of the genomic response of neurons to normobaric and hyperbaric hyperoxic stress, we performed a microarray analysis of gene expression after exposure to varying levels of partial oxygen pressures. Rat neurons were exposed to normobaric hyperoxia, hyperbaric (2, 4, and 6 atmosphere absolute) air or hyperbaric O(2). We identified 183 genes significantly altered (increased or decreased a parts per thousand yen1.5-fold) in response to pressure and/or oxidative stress. Among them, 17 genes changed in response to all exposure conditions. More genes were altered in response to hyperbaric air than hyperbaric O(2). The altered genes included factors associated with stress responses, transport/neurotransmission, signal transduction, and transcription factors. The results may serve as guidance for selection of biomarkers of hyperoxia and hyperbaric O(2) response and provide a starting point for further studies to investigate the global molecular mechanisms underlying hyperbaric oxidative stress.
C1 [Chen, Ye; Nadi, N. Suzan; Chavko, Mikulas; Auker, Charles R.; McCarron, Richard M.] USN, Undersea Med Dept, Med Res Ctr, Silver Spring, MD 20910 USA.
RP McCarron, RM (reprint author), USN, Undersea Med Dept, Med Res Ctr, 503 Robert Grant Ave,Bldg 503,Rm 1A10, Silver Spring, MD 20910 USA.
EM richard.mccarron@med.navy.mil
FU Office of Naval Research Work [0601153N.4118.A0303]
FX The authors are grateful to Mr. John Boal for technical support and Ms.
Diana Temple for editorial assistance. This work was supported by Office
of Naval Research Work Unit #0601153N.4118.A0303. The opinions expressed
in this presentation are those of the authors and do not reflect the
official policy of the Department of Navy, Department of Defense, of the
U. S. Government.
NR 47
TC 14
Z9 14
U1 0
U2 1
PU SPRINGER/PLENUM PUBLISHERS
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 0364-3190
J9 NEUROCHEM RES
JI Neurochem. Res.
PD JUN
PY 2009
VL 34
IS 6
BP 1047
EP 1056
DI 10.1007/s11064-008-9873-8
PG 10
WC Biochemistry & Molecular Biology; Neurosciences
SC Biochemistry & Molecular Biology; Neurosciences & Neurology
GA 430BX
UT WOS:000264964900004
PM 19015983
ER
PT J
AU Jo, JC
Roh, KW
Kwon, YW
AF Jo, Jong Chull
Roh, Kyung Wan
Kwon, Young W.
TI FINITE ELEMENT BASED FORMULATION OF THE LATTICE BOLTZMANN EQUATION
SO NUCLEAR ENGINEERING AND TECHNOLOGY
LA English
DT Article
DE Fluid-structure Interaction; Finite Element Method; Lattice Boltzmann
Method; Three-dimensional Analysis
AB The finite element based lattice Boltzmann method (FELBM) has been developed to model complex fluid domain shapes, which is essential for studying fluid-structure interaction problems in commercial nuclear power systems, for example. The present study addresses a new finite element formulation of the lattice Boltzmann equation using a general weighted residual technique. Among the weighted residual formulations, the collocation method, Galerkin method, and method of moments are used for finite element based Lattice Boltzmann solutions. Different finite element geometries, such as triangular, quadrilateral, and general six-sided solids, were used in this work. Some examples using the FELBM are studied. The results were compared with both analytical and computational fluid dynamics solutions.
C1 [Jo, Jong Chull; Roh, Kyung Wan] Korea Inst Nucl Safety, Taejon 305338, South Korea.
[Kwon, Young W.] USN, Postgrad Sch, Monterey, CA 93943 USA.
RP Jo, JC (reprint author), Korea Inst Nucl Safety, 19 Kusung Dong, Taejon 305338, South Korea.
EM jcjo@kins.re.kr
NR 10
TC 2
Z9 2
U1 0
U2 3
PU KOREAN NUCLEAR SOC
PI DAEJEON
PA FLOOR 4, NUTOPIA BUILDING, 342-1 JANGDAE-DONG, YUSEONG-GU, DAEJEON,
305-308, SOUTH KOREA
SN 1738-5733
J9 NUCL ENG TECHNOL
JI Nucl. Eng. Technol.
PD JUN
PY 2009
VL 41
IS 5
BP 649
EP 654
PG 6
WC Nuclear Science & Technology
SC Nuclear Science & Technology
GA 468LU
UT WOS:000267820800005
ER
PT J
AU Galanis, G
Emmanouil, G
Chu, PC
Kallos, G
AF Galanis, George
Emmanouil, George
Chu, Peter C.
Kallos, George
TI A new methodology for the extension of the impact of data assimilation
on ocean wave prediction
SO OCEAN DYNAMICS
LA English
DT Article
DE Assimilation; Kalman filters; Kolmogorov-Zurbenko filters; Wave modeling
ID SCALES; MODEL
AB It is a common fact that the majority of today's wave assimilation platforms have a limited, in time, ability of affecting the final wave prediction, especially that of long-period forecasting systems. This is mainly due to the fact that after "closing" the assimilation window, i.e., the time that the available observations are assimilated into the wave model, the latter continues to run without any external information. Therefore, if a systematic divergence from the observations occurs, only a limited portion of the forecasting period will be improved. A way of dealing with this drawback is proposed in this study: A combination of two different statistical tools-Kolmogorov-Zurbenko and Kalman filters-is employed so as to eliminate any systematic error of (a first run of) the wave model results. Then, the obtained forecasts are used as artificial observations that can be assimilated to a follow-up model simulation inside the forecasting period. The method was successfully applied to an open sea area (Pacific Ocean) for significant wave height forecasts using the wave model WAM and six different buoys as observational stations. The results were encouraging and led to the extension of the assimilation impact to the entire forecasting period as well as to a significant reduction of the forecast bias.
C1 [Galanis, George] Naval Acad Greece, Sect Math, Xatzikyriakion 18539, Piraeus, Greece.
[Galanis, George; Emmanouil, George; Kallos, George] Univ Athens, Atmospher Modeling & Weather Forecasting Grp, Div Appl Phys, Sch Phys, Athens 15784, Greece.
[Chu, Peter C.] USN, Postgrad Sch, Dept Oceanog, Grad Sch Engn & Appl Sci, Monterey, CA 93943 USA.
RP Galanis, G (reprint author), Naval Acad Greece, Sect Math, Xatzikyriakion 18539, Piraeus, Greece.
EM ggalanis@mg.uoa.gr
NR 19
TC 24
Z9 24
U1 0
U2 0
PU SPRINGER HEIDELBERG
PI HEIDELBERG
PA TIERGARTENSTRASSE 17, D-69121 HEIDELBERG, GERMANY
SN 1616-7341
J9 OCEAN DYNAM
JI Ocean Dyn.
PD JUN
PY 2009
VL 59
IS 3
BP 523
EP 535
DI 10.1007/s10236-009-0191-8
PG 13
WC Oceanography
SC Oceanography
GA 450HR
UT WOS:000266392100008
ER
PT J
AU Roemmich, D
Johnson, GC
Riser, S
Davis, R
Gilson, J
Owens, WB
Garzoli, SL
Schmid, C
Ignaszewski, M
AF Roemmich, Dean
Johnson, Gregory C.
Riser, Stephen
Davis, Russ
Gilson, John
Owens, W. Brechner
Garzoli, Silvia L.
Schmid, Claudia
Ignaszewski, Mark
TI The Argo Program Observing the Global Ocean with Profiling Floats
SO OCEANOGRAPHY
LA English
DT Article
ID PACIFIC
AB The Argo Program has created the first global array for observing the subsurface ocean. Argo arose from a compelling scientific need for climate-relevant ocean data; it was made possible by technology development and implemented through international collaboration. The float program and its data management system began with regional arrays in 1999, scaled up to global deployments by 2004, and achieved its target of 3000 active instruments in 2007. US Argo, supported by the National Oceanic and Atmospheric Administration and the Navy through the National Oceanographic Partnership Program, provides half of the floats in the international array, plus leadership in float technology, data management, data quality control, international coordination, and outreach. All Argo data are freely available without restriction, in real time and in research-quality forms. Uses of Argo data range from oceanographic research, climate research, and education, to operational applications in ocean data assimilation and seasonal-to-decadal prediction. Argo's value grows as its data accumulate and their applications are better understood. Continuing advances in profiling float and sensor technologies open many exciting possibilities for Argo's future, including expanding sampling into high latitudes and the deep ocean, improving near-surface sampling, and adding biogeochemical parameters.
C1 [Roemmich, Dean; Davis, Russ] Univ Calif San Diego, Scripps Inst Oceanog, Instrument Dev Grp, La Jolla, CA 92093 USA.
[Johnson, Gregory C.] NOAA, Pacific Marine Environm Lab, Ocean Climate Res Div, Seattle, WA 98115 USA.
[Riser, Stephen] Univ Washington, Sch Oceanog, Seattle, WA 98195 USA.
[Owens, W. Brechner] Woods Hole Oceanog Inst, Woods Hole, MA 02543 USA.
[Garzoli, Silvia L.; Schmid, Claudia] NOAA, Atlantic Oceanog & Meteorol Lab, Phys Oceanog Div, Miami, FL 33149 USA.
[Ignaszewski, Mark] USN, Fleet Numer Meteorol & Oceanog Ctr, Monterey, CA USA.
RP Roemmich, D (reprint author), Univ Calif San Diego, Scripps Inst Oceanog, Instrument Dev Grp, La Jolla, CA 92093 USA.
EM droemmich@ucsd.edu
RI Garzoli, Silvia/A-3556-2010; Johnson, Gregory/I-6559-2012; Schmid,
Claudia/D-5875-2013;
OI Garzoli, Silvia/0000-0003-3553-2253; Johnson,
Gregory/0000-0002-8023-4020; Schmid, Claudia/0000-0003-2132-4736; Davis,
Russ/0000-0003-1903-6313
FU US Argo via the National Ocean Partnership Program [NA17RJ1231,
NA17RJ1232, NA17RJ1223]
FX Argo data are collected and made freely available by the international
Argo Program and by the national programs that contribute to it
(http://www.argo. net). The authors and their part of the Argo Program
were supported by US Argo via the National Ocean Partnership Program,
including NOAA Grants NA17RJ1231 (SIO-JIMO), NA17RJ1232 (UW-JISAO), and
NA17RJ1223 (WHOI-CICOR). The statements, findings, conclusions, and
recommendations herein are those of the authors and do not necessarily
reflect the views of the National Oceanic and Atmospheric Administration
or the Department of Commerce, and the mention of commercial products
herein does not constitute endorsement by these entities. Graphics in
the Global Marine Atlas are produced using Ferret software, a product of
NOAA's Pacific Marine Environmental Laboratory. PMEL contribution Number
3244.
NR 20
TC 132
Z9 135
U1 1
U2 29
PU OCEANOGRAPHY SOC
PI ROCKVILLE
PA P.O. BOX 1931, ROCKVILLE, MD USA
SN 1042-8275
J9 OCEANOGRAPHY
JI Oceanography
PD JUN
PY 2009
VL 22
IS 2
SI SI
BP 34
EP 43
DI 10.5670/oceanog.2009.36
PG 10
WC Oceanography
SC Oceanography
GA 457WC
UT WOS:000266964200010
ER
PT J
AU Chassignet, EP
Hurlburt, HE
Metzger, EJ
Smedstad, OM
Cummings, JA
Halliwell, GR
Bleck, R
Baraille, R
Wallcraft, AJ
Lozano, C
Tolman, HL
Srinivasan, A
Hankin, S
Cornillon, P
Weisberg, R
Barth, A
He, R
Werner, F
Wilkin, J
AF Chassignet, Eric P.
Hurlburt, Harley E.
Metzger, E. Joseph
Smedstad, Ole Martin
Cummings, James A.
Halliwell, George R.
Bleck, Rainer
Baraille, Remy
Wallcraft, Alan J.
Lozano, Carlos
Tolman, Hendrik L.
Srinivasan, Ashwanth
Hankin, Steve
Cornillon, Peter
Weisberg, Robert
Barth, Alexander
He, Ruoying
Werner, Francisco
Wilkin, John
TI US GODAE Global Ocean Prediction with the HYbrid Coordinate Ocean Model
(HYCOM)
SO OCEANOGRAPHY
LA English
DT Article
ID NORTH-ATLANTIC; VERTICAL COORDINATE; DATA ASSIMILATION; SYSTEM;
1/10-DEGREES; SIMULATION; SURFACE; IMPACT
AB During the past five to ten years, a broad partnership of institutions under NOPP sponsorship has collaborated in developing and demonstrating the performance and application of eddy-resolving, real-time global- and basin-scale ocean prediction systems using the HYbrid Coordinate Ocean Model (HYCOM). The partnership represents a broad spectrum of the oceanographic community, bringing together academia, federal agencies, and industry/commercial entities, and spanning modeling, data assimilation, data management and serving, observational capabilities, and application of HYCOM prediction system outputs. In addition to providing real-time, eddy-resolving global- and basin-scale ocean prediction systems for the US Navy and NOAA, this project also offered an outstanding opportunity for NOAA-Navy collaboration and cooperation, ranging from research to the operational level. This paper provides an overview of the global HYCOM ocean prediction system and highlights some of its achievements. An important outcome of this effort is the capability of the global system to provide boundary conditions to even higher-resolution regional and coastal models.
C1 [Chassignet, Eric P.] Florida State Univ, Ctr Ocean Atmospher Predict Studies, Tallahassee, FL 32306 USA.
[Smedstad, Ole Martin] QinetiQ N Amer Technol Solut Grp, Stennis Space Ctr, MS USA.
[Metzger, E. Joseph; Cummings, James A.; Wallcraft, Alan J.] USN, Res Lab, Ocean Dynam & Predict Branch, Stennis Space Ctr, MS USA.
[Halliwell, George R.] NOAA, Atlantic Oceanog & Meteorol Lab, Miami, FL 33149 USA.
[Bleck, Rainer] NASA, Goddard Inst Space Studies, New York, NY 10025 USA.
[Bleck, Rainer] NOAA, Earth Syst Res Lab, Boulder, CO USA.
[Baraille, Remy] Serv Hydrog & Oceanog Marine, Toulouse, France.
[Tolman, Hendrik L.] NOAA, Natl Ctr Environm Predict, Environm Modeling Ctr, Marine Modeling & Anal Branch, Camp Springs, MD USA.
[Srinivasan, Ashwanth] Univ Miami, Rosenstiel Sch Marine & Atmospher Sci, Div Meteorol & Oceanog, Miami, FL 33149 USA.
[Hankin, Steve] NOAA, Pacific Marine Environm Lab, Seattle, WA 98115 USA.
[Cornillon, Peter] Univ Rhode Isl, Grad Sch Oceanog, Narragansett, RI 02882 USA.
[Weisberg, Robert] Univ S Florida, Coll Marine Sci, St Petersburg, FL 33701 USA.
[Barth, Alexander] Univ Liege, Liege, Belgium.
[He, Ruoying] N Carolina State Univ, Dept Marine Earth & Atmospher Sci, Raleigh, NC 27695 USA.
[Werner, Francisco; Wilkin, John] Rutgers State Univ, Inst Marine & Coastal Sci, New Brunswick, NJ 08903 USA.
RP Chassignet, EP (reprint author), Florida State Univ, Ctr Ocean Atmospher Predict Studies, Tallahassee, FL 32306 USA.
EM echassignet@coaps.fsu.edu
RI Wilkin, John/E-5343-2011; Halliwell, George/B-3046-2011
OI Wilkin, John/0000-0002-5444-9466; Halliwell, George/0000-0003-4216-070X
NR 24
TC 119
Z9 125
U1 2
U2 16
PU OCEANOGRAPHY SOC
PI ROCKVILLE
PA P.O. BOX 1931, ROCKVILLE, MD USA
SN 1042-8275
J9 OCEANOGRAPHY
JI Oceanography
PD JUN
PY 2009
VL 22
IS 2
SI SI
BP 64
EP 75
DI 10.5670/oceanog.2009
PG 12
WC Oceanography
SC Oceanography
GA 457WC
UT WOS:000266964200013
ER
PT J
AU Gentemann, CL
Minnett, PJ
Sienkiewicz, J
DeMaria, M
Cummings, J
Jin, Y
Doyle, JD
Gramer, L
Barron, CN
Casey, KS
Donlon, CJ
AF Gentemann, Chelle L.
Minnett, Peter J.
Sienkiewicz, Joseph
DeMaria, Mark
Cummings, James
Jin, Yi
Doyle, James D.
Gramer, Lew
Barron, Charlie N.
Casey, Kenneth S.
Donlon, Craig J.
TI MISST THE MULTI-SENSOR IMPROVED SEA SURFACE TEMPERATURE PROJECT
SO OCEANOGRAPHY
LA English
DT Article
ID COOL-SKIN
AB Sea surface temperature (SST) measurements are vital to global weather prediction, climate change studies, fisheries management, and a wide range of other applications. Measurements are taken by several satellites carrying infrared and microwave radiometers, moored buoys, drifting buoys, and ships. Collecting all these measurements together and producing global maps of SST has been a difficult endeavor due in part to different data formats, data location and accessibility, and lack of measurement error estimates. The need for a uniform approach to SST measurements and estimation of measurement errors resulted in the formation of the international Global Ocean Data Assimilation Experiment (GODAE) High Resolution SST Pilot Project (GHRSST-PP). Projects were developed in Japan, Europe, and Australia. Simultaneously, in the United States, the Multi-sensor Improved SST (MISST) project was initiated. Five years later, the MISST project has produced satellite SST data from nine satellites in an identical format with ancillary information and estimates of measurement error. Use of these data in global SST analyses has been improved through research into modeling of the ocean surface skin layer and upper ocean diurnal heaing. These data and research results have been used by several groups within MISST to produce high-resolution global maps of SSTs, which have been shown to improve tropical cyclone prediction. Additionally, the new SSTs are now used operationally for marine weather warnings and forecasts.
C1 [Gentemann, Chelle L.] Remote Sensing Syst, Santa Rosa, CA USA.
[Minnett, Peter J.] Univ Miami, Rosenstiel Sch Marine & Atmospher Sci, Miami, FL 33149 USA.
[Sienkiewicz, Joseph] NOAA, Ocean Predict Ctr, Ocean Applicat Branch, Camp Springs, MD USA.
[DeMaria, Mark] NOAA Natl Environm Satellite, Ctr Satellite Applicat & Res, Ft Collins, CO USA.
[Cummings, James] USN, Res Lab, Div Oceanog, Monterey, CA USA.
[Jin, Yi; Doyle, James D.] USN, Res Lab, Marine Meteorol Div, Monterey, CA USA.
[Gramer, Lew] Univ Miami, Cooperat Inst Marine & Atmospher Studies, Miami, FL USA.
[Barron, Charlie N.] USN, Div Oceanog, Stennis Space Ctr, MS USA.
[Casey, Kenneth S.] NOAA, Natl Oceanog Data Ctr, Silver Spring, MD USA.
[Donlon, Craig J.] Int Global High Resolut Sea Surface Temp Project, Exeter, Devon, England.
RP Gentemann, CL (reprint author), Remote Sensing Syst, Santa Rosa, CA USA.
EM gentemann@remss.com
RI Gramer, Lewis/A-5620-2010; DeMaria, Mark/F-5583-2010; Casey,
Kenneth/D-4065-2013; Barron, Charlie/C-1451-2008
OI Gramer, Lewis/0000-0003-4772-1991; Casey, Kenneth/0000-0002-6052-7117;
NR 29
TC 13
Z9 14
U1 0
U2 4
PU OCEANOGRAPHY SOC
PI ROCKVILLE
PA P.O. BOX 1931, ROCKVILLE, MD USA
SN 1042-8275
J9 OCEANOGRAPHY
JI Oceanography
PD JUN
PY 2009
VL 22
IS 2
BP 76
EP 87
PG 12
WC Oceanography
SC Oceanography
GA 457WC
UT WOS:000266964200014
ER
PT J
AU Chang, CK
Cohen, ME
Bienek, DR
AF Chang, C. K.
Cohen, M. E.
Bienek, D. R.
TI Efficiency of oral fluid collection devices in extracting antibodies
SO ORAL MICROBIOLOGY AND IMMUNOLOGY
LA English
DT Article
DE antibody; collection device; human; oral fluid
ID HEPATITIS-C VIRUS; IMMUNOGLOBULIN-A; PAROTID-SALIVA; SERUM; HIV;
IMMUNIZATION; CHILDREN; DISEASES; WHOLE; AGE
AB Chang CK, Cohen ME, Bienek DR. Efficiency of oral fluid collection devices in extracting antibodies. Oral Microbiol Immunol 2009: 24: 231-235. 2009 John Wiley & Sons A/S.
To facilitate diagnoses, this study determined the efficacy of commercial oral fluid collection devices for their ability to recover three human immunoglobulin isotypes; immunoglobulin A (IgA), IgG, and IgM.
The sandwich enzyme-linked immunosorbent assay was used to determine antibody recovery from the following devices: (i) OraSure((R)) oral specimen collection device, (ii) saliva center dot sampler((R)), (iii) ORALscreen (TM) collector, (iv) Dri-Angle((R)), (v) no. 2 cotton roll, (vi) all-gauze sponges device, and (vii) DentaSwabs((R)). For each isotype tested, the recovered eluate was compared with the concentration applied to the device. The performance of each device was determined at various antibody concentrations.
Recovery of IgA from the saliva center dot sampler, ORALscreen collector, Dri-Angle and cotton roll was comparable to that seeded onto the device. When compared with the seeded IgG concentration, the mean concentration of antibody recovered by each product differed by approximately +/- 9 ng/ml. The average amount of IgM recovered by the cotton roll and all-gauze sponges device was approximately 29 and 39 ng/ml, respectively, less (P < 0.0001) than that seeded on the device. For all isotypes tested, the amount of antibody recovered from the device was dependent on the initial seeding concentration.
Collectively, these data suggest that the product used for specimen collection can affect retrieval of antibodies and potentially confound patient diagnosis.
C1 [Chang, C. K.; Cohen, M. E.; Bienek, D. R.] USN, Inst Dent & Biomed Res, Great Lakes, IL 60088 USA.
[Chang, C. K.; Bienek, D. R.] Gen Dynam Informat Technol, Frederick, MD USA.
RP Bienek, DR (reprint author), USN, Inst Dent & Biomed Res, 310A,B St,Bldg 1-H, Great Lakes, IL 60088 USA.
EM diane.bienek@med.navy.mil
FU Naval Medical Research Center, Silver Spring, MD 20910, USA
[ONR62236N.M04426.W26.C0204]
FX This work was supported by grant ONR62236N.M04426.W26.C0204 from the
Naval Medical Research Center, Silver Spring, MD 20910, USA.
NR 30
TC 7
Z9 8
U1 0
U2 2
PU WILEY-BLACKWELL PUBLISHING, INC
PI MALDEN
PA COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA
SN 0902-0055
J9 ORAL MICROBIOL IMMUN
JI Oral Microbiol. Immunol.
PD JUN
PY 2009
VL 24
IS 3
BP 231
EP 235
DI 10.1111/j.1399-302X.2008.00500.x
PG 5
WC Dentistry, Oral Surgery & Medicine; Immunology; Microbiology
SC Dentistry, Oral Surgery & Medicine; Immunology; Microbiology
GA 433FN
UT WOS:000265189800009
PM 19416453
ER
PT J
AU Balatsky, AV
Chantis, A
Dahal, HP
Parker, D
Zhu, JX
AF Balatsky, A. V.
Chantis, A.
Dahal, Hari P.
Parker, David
Zhu, J. X.
TI Incommensurate spin resonance in URu2Si2
SO PHYSICAL REVIEW B
LA English
DT Article
DE doping; Fermi surface; heavy fermion superconductors; magnetic
susceptibility; neutron diffraction; rhodium; ruthenium alloys; silicon
alloys; specific heat; spin dynamics; uranium alloys
ID ELECTRON SUPERCONDUCTOR URU2SI2; NEUTRON-SCATTERING; MAGNETIC-FIELD;
FERMI-SURFACE; HIDDEN-ORDER; HEAVY; EXCITATIONS; DENSITY; MODEL
AB The nature of the hidden order (HO) in URu2Si2 below T-HO=17.5 K has been a puzzle for a long time. Neutron-scattering studies of this material reveal a rich spin dynamics. We focus on the inelastic neutron scattering in URu2Si2 and argue that the observed gap in the fermion spectrum naturally leads to the spin feature observed at energies omega(res)=4-6 meV at momenta at Q(*)=(1 +/- 0.4,0,0). We discuss how spin features seen in URu2Si2 can indeed be thought of in terms of the spin resonance that develops in HO state and is not related to the superconducting transition at 1.5 K. In our analysis, we assume that the HO gap is due to a particle-hole condensate that connects nested parts of the Fermi surface with nesting vector Q(*). Within this approach, we can predict the behavior of the spin susceptibility at Q(*) and find it to be strikingly similar to the phenomenology of resonance peaks in high T-c and heavy fermion superconductors. The energy of the resonance peak scales with T-HO omega(res)similar or equal to 4k(B)T(HO). We discuss observable consequences that spin resonance will have on neutron scattering and local density of states. Moreover, we argue how the establishment of spin resonance in URu2Si2 and better characterization of susceptibility, temperature, pressure, and Rh-doping dependence would elucidate the nature of the HO.
C1 [Balatsky, A. V.; Chantis, A.; Dahal, Hari P.; Zhu, J. X.] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA.
[Balatsky, A. V.] Los Alamos Natl Lab, Ctr Integrated Nanotechnol, Los Alamos, NM 87545 USA.
[Parker, David] USN, Res Lab, Washington, DC 20375 USA.
RP Balatsky, AV (reprint author), Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA.
OI Chantis, Athanasios/0000-0001-7933-0579; Zhu,
Jianxin/0000-0001-7991-3918
NR 32
TC 35
Z9 35
U1 1
U2 4
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 JUN
PY 2009
VL 79
IS 21
AR 214413
DI 10.1103/PhysRevB.79.214413
PG 7
WC Physics, Condensed Matter
SC Physics
GA 466XR
UT WOS:000267699200074
ER
PT J
AU Cywinski, L
Witzel, WM
Das Sarma, S
AF Cywinski, Lukasz
Witzel, Wayne M.
Das Sarma, S.
TI Pure quantum dephasing of a solid-state electron spin qubit in a large
nuclear spin bath coupled by long-range hyperfine-mediated interactions
SO PHYSICAL REVIEW B
LA English
DT Article
DE gallium arsenide; hyperfine interactions; III-V semiconductors; indium
compounds; quantum computing; semiconductor quantum dots; Zeeman effect
ID COHERENT DYNAMICS; DOTS; DECOHERENCE; FIELD
AB We investigate decoherence due to pure dephasing of a localized spin qubit interacting with a nuclear spin bath. Although in the limit of a very large magnetic field the only decoherence mechanism is spectral diffusion due to dipolar flip-flops of nuclear spins, with decreasing field the hyperfine-mediated interactions between the nuclear spins become important. We take advantage of their long-range nature and resum the leading terms in an 1/N expansion of the decoherence time-evolution function (N, being the number of nuclear spins interacting appreciably with the electron spin, is large). For the case of the thermal uncorrelated bath we show that our theory is applicable down to low magnetic fields (similar to 10 mT for a large dot with N=10(6)) allowing for comparison with recent experiments in GaAs quantum dot spin qubits. Within this approach we calculate the free induction decay and spin echo decoherence in GaAs and InGaAs as a function of the number of the nuclei in the bath (i.e., the quantum dot size) and the magnetic field. Our theory for free induction decay in a narrowed nuclear bath is shown to agree with the exact solution for decoherence due to hyperfine-mediated interaction which can be obtained when all the nuclei-electron coupling constants are identical. For the spin echo evolution we show that the dominant decoherence process at low fields is due to interactions between nuclei having significantly different Zeeman energies (i.e., nuclei of As and two isotopes of Ga in GaAs), and we compare our results with recent measurements of spin echo signal of a single spin confined in a GaAs quantum dot. For the same set of parameters we perform calculations of decoherence under various dynamical decoupling pulse sequences and predict the effect of these sequences in low-B regime in GaAs.
C1 [Cywinski, Lukasz; Witzel, Wayne M.; Das Sarma, S.] Univ Maryland, Dept Phys, Condensed Matter Theory Ctr, College Pk, MD 20742 USA.
[Cywinski, Lukasz] Polish Acad Sci, Inst Phys, PL-02668 Warsaw, Poland.
[Witzel, Wayne M.] USN, Res Lab, Washington, DC 20375 USA.
[Witzel, Wayne M.] Sandia Natl Labs, Albuquerque, NM 87185 USA.
RP Cywinski, L (reprint author), Univ Maryland, Dept Phys, Condensed Matter Theory Ctr, College Pk, MD 20742 USA.
RI Cywinski, Lukasz/E-5348-2010; Das Sarma, Sankar/B-2400-2009
OI Cywinski, Lukasz/0000-0002-0162-7943; Das Sarma,
Sankar/0000-0002-0439-986X
NR 87
TC 86
Z9 86
U1 1
U2 17
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 JUN
PY 2009
VL 79
IS 24
AR 245314
DI 10.1103/PhysRevB.79.245314
PG 23
WC Physics, Condensed Matter
SC Physics
GA 466XV
UT WOS:000267699700090
ER
PT J
AU Johannes, MD
Mazin, II
AF Johannes, M. D.
Mazin, I. I.
TI Microscopic origin of magnetism and magnetic interactions in
ferropnictides
SO PHYSICAL REVIEW B
LA English
DT Article
DE barium compounds; Fermi surface; iron compounds; magnetic moments;
metal-insulator transition; spin-Peierls transition; superexchange
interactions
ID PNICTIDES
AB One year after their initial discovery, two schools of thought have crystallized regarding the electronic structure and magnetic properties of ferropnictide systems. One postulates that these are itinerant weakly correlated metallic systems that become magnetic by virtue of spin-Peierls-type transition due to near nesting between the hole and the electron Fermi-surface pockets. The other argues that these materials are strongly or at least moderately correlated and the electrons are considerably localized and close to a Mott-Hubbard transition, with the local magnetic moments interacting via short-range superexchange. In this Rapid Communication we argue that neither picture is fully correct. The systems are moderately correlated but with correlations driven by Hund's rule coupling rather than by the on-site Hubbard repulsion. The iron moments are largely local, driven by Hund's intra-atomic exchange. Superexchange is not operative, and the interactions between the Fe moments are considerably long range and driven mostly by one-electron energies of all occupied states.
C1 [Johannes, M. D.; Mazin, I. I.] USN, Res Lab, Washington, DC 20375 USA.
RP Johannes, MD (reprint author), USN, Res Lab, Code 6393, Washington, DC 20375 USA.
RI Mazin, Igor/B-6576-2008
NR 22
TC 138
Z9 139
U1 0
U2 17
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 JUN
PY 2009
VL 79
IS 22
AR 220510
DI 10.1103/PhysRevB.79.220510
PG 4
WC Physics, Condensed Matter
SC Physics
GA 466XS
UT WOS:000267699300018
ER
PT J
AU Abelev, BI
Aggarwal, MM
Ahammed, Z
Anderson, BD
Arkhipkin, D
Averichev, GS
Bai, Y
Balewski, J
Barannikova, O
Barnby, LS
Baudot, J
Baumgart, S
Beavis, DR
Bellwied, R
Benedosso, F
Betts, RR
Bhardwaj, S
Bhasin, A
Bhati, AK
Bichsel, H
Bielcik, J
Bielcikova, J
Biritz, B
Bland, LC
Blyth, SL
Bombara, M
Bonner, BE
Botje, M
Bouchet, J
Braidot, E
Brandin, AV
Bruna, E
Bueltmann, S
Burton, TP
Bystersky, M
Cai, XZ
Caines, H
Sanchez, MCD
Callner, J
Catu, O
Cebra, D
Cendejas, R
Cervantes, MC
Chajecki, Z
Chaloupka, P
Chattopadhyay, S
Chen, HF
Chen, JH
Chen, JY
Cheng, J
Cherney, M
Chikanian, A
Choi, KE
Christie, W
Chung, SU
Clarke, RF
Codrington, MJM
Coffin, JP
Cormier, TM
Cosentino, MR
Cramer, JG
Crawford, HJ
Das, D
Dash, S
Daugherity, M
Silva, CD
Dedovich, TG
DePhillips, M
Derevschikov, AA
de Souza, RD
Didenko, L
Djawotho, P
Dogra, SM
Dong, X
Drachenberg, JL
Draper, JE
Du, F
Dunlop, JC
Mazumdar, MRD
Edwards, WR
Efimov, LG
Elhalhuli, E
Elnimr, M
Emelianov, V
Engelage, J
Eppley, G
Erazmus, B
Estienne, M
Eun, L
Fachini, P
Fatemi, R
Fedorisin, J
Feng, A
Filip, P
Finch, E
Fine, V
Fisyak, Y
Gagliardi, CA
Gaillard, L
Gangadharan, DR
Ganti, MS
Garcia-Solis, E
Ghazikhanian, V
Ghosh, P
Gorbunov, YN
Gordon, A
Grebenyuk, O
Grosnick, D
Grube, B
Guertin, SM
Guimaraes, KSFF
Gupta, A
Gupta, N
Guryn, W
Haag, B
Hallman, TJ
Hamed, A
Harris, JW
He, W
Heinz, M
Heppelmann, S
Hippolyte, B
Hirsch, A
Hoffman, AM
Hoffmann, GW
Hofman, DJ
Hollis, RS
Huang, HZ
Humanic, TJ
Igo, G
Iordanova, A
Jacobs, P
Jacobs, WW
Jakl, P
Jin, F
Jones, PG
Joseph, J
Judd, EG
Kabana, S
Kajimoto, K
Kang, K
Kapitan, J
Kaplan, M
Keane, D
Kechechyan, A
Kettler, D
Khodyrev, VY
Kiryluk, J
Kisiel, A
Klein, SR
Knospe, AG
Kocoloski, A
Koetke, DD
Kopytine, M
Kotchenda, L
Kouchpil, V
Kravtsov, P
Kravtsov, VI
Krueger, K
Krus, M
Kuhn, C
Kumar, L
Kurnadi, P
Lamont, MAC
Landgraf, JM
LaPointe, S
Lauret, J
Lebedev, A
Lednicky, R
Lee, CH
LeVine, MJ
Li, C
Li, Y
Lin, G
Lin, X
Lindenbaum, SJ
Lisa, MA
Liu, F
Liu, H
Liu, J
Liu, L
Ljubicic, T
Llope, WJ
Longacre, RS
Love, WA
Lu, Y
Ludlam, T
Lynn, D
Ma, GL
Ma, JG
Ma, YG
Mahapatra, DP
Majka, R
Mall, MI
Mangotra, LK
Manweiler, R
Margetis, S
Markert, C
Matis, HS
Matulenko, YA
McShane, TS
Meschanin, A
Millane, J
Miller, ML
Minaev, NG
Mioduszewski, S
Mischke, A
Mitchell, J
Mohanty, B
Morozov, DA
Munhoz, MG
Nandi, BK
Nattrass, C
Nayak, TK
Nelson, JM
Nepali, C
Netrakanti, PK
Ng, MJ
Nogach, LV
Nurushev, SB
Odyniec, G
Ogawa, A
Okada, H
Okorokov, V
Olson, D
Pachr, M
Page, BS
Pal, SK
Pandit, Y
Panebratsev, Y
Pawlak, T
Peitzmann, T
Perevoztchikov, V
Perkins, C
Peryt, W
Phatak, SC
Planinic, M
Pluta, J
Poljak, N
Poskanzer, AM
Potukuchi, BVKS
Prindle, D
Pruneau, C
Pruthi, NK
Putschke, J
Raniwala, R
Raniwala, S
Ray, RL
Reed, R
Ridiger, A
Ritter, HG
Roberts, JB
Rogachevskiy, OV
Romero, JL
Rose, A
Roy, C
Ruan, L
Russcher, MJ
Rykov, V
Sahoo, R
Sakrejda, I
Sakuma, T
Salur, S
Sandweiss, J
Sarsour, M
Schambach, J
Scharenberg, RP
Schmitz, N
Seger, J
Selyuzhenkov, I
Seyboth, P
Shabetai, A
Shahaliev, E
Shao, M
Sharma, M
Shi, SS
Shi, XH
Sichtermann, EP
Simon, F
Singaraju, RN
Skoby, MJ
Smirnov, N
Snellings, R
Sorensen, P
Sowinski, J
Spinka, HM
Srivastava, B
Stadnik, A
Stanislaus, TDS
Staszak, D
Strikhanov, M
Stringfellow, B
Suaide, AAP
Suarez, MC
Subba, NL
Sumbera, M
Sun, XM
Sun, Y
Sun, Z
Surrow, B
Symons, TJM
de Toledo, AS
Takahashi, J
Tang, AH
Tang, Z
Tarnowsky, T
Thein, D
Thomas, JH
Tian, J
Timmins, AR
Timoshenko, S
Tlusty
Tokarev, M
Trainor, TA
Tram, VN
Trattner, AL
Trentalange, S
Tribble, RE
Tsai, OD
Ulery, J
Ullrich, T
Underwood, DG
Van Buren, G
van Leeuwen, M
Vander Molen, AM
Vanfossen, JA
Varma, R
Vasconcelos, GMS
Vasilevski, IM
Vasiliev, AN
Videbaek, F
Vigdor, SE
Viyogi, YP
Vokal, S
Voloshin, SA
Wada, M
Waggoner, WT
Wang, F
Wang, G
Wang, JS
Wang, Q
Wang, X
Wang, XL
Wang, Y
Webb, JC
Westfall, GD
Whitten, C
Wieman, H
Wissink, SW
Witt, R
Wu, Y
Xu, N
Xu, QH
Xu, Y
Xu, Z
Yepes, P
Yoo, IK
Yue, Q
Zawisza, M
Zbroszczyk, H
Zhan, W
Zhang, H
Zhang, S
Zhang, WM
Zhang, Y
Zhang, ZP
Zhao, Y
Zhong, C
Zhou, J
Zoulkarneev, R
Zoulkarneeva, Y
Zuo, JX
AF Abelev, B. I.
Aggarwal, M. M.
Ahammed, Z.
Anderson, B. D.
Arkhipkin, D.
Averichev, G. S.
Bai, Y.
Balewski, J.
Barannikova, O.
Barnby, L. S.
Baudot, J.
Baumgart, S.
Beavis, D. R.
Bellwied, R.
Benedosso, F.
Betts, R. R.
Bhardwaj, S.
Bhasin, A.
Bhati, A. K.
Bichsel, H.
Bielcik, J.
Bielcikova, J.
Biritz, B.
Bland, L. C.
Blyth, S. -L.
Bombara, M.
Bonner, B. E.
Botje, M.
Bouchet, J.
Braidot, E.
Brandin, A. V.
Bruna, E.
Bueltmann, S.
Burton, T. P.
Bystersky, M.
Cai, X. Z.
Caines, H.
Sanchez, M. Calderon de la Barca
Callner, J.
Catu, O.
Cebra, D.
Cendejas, R.
Cervantes, M. C.
Chajecki, Z.
Chaloupka, P.
Chattopadhyay, S.
Chen, H. F.
Chen, J. H.
Chen, J. Y.
Cheng, J.
Cherney, M.
Chikanian, A.
Choi, K. E.
Christie, W.
Chung, S. U.
Clarke, R. F.
Codrington, M. J. M.
Coffin, J. P.
Cormier, T. M.
Cosentino, M. R.
Cramer, J. G.
Crawford, H. J.
Das, D.
Dash, S.
Daugherity, M.
De Silva, C.
Dedovich, T. G.
DePhillips, M.
Derevschikov, A. A.
de Souza, R. Derradi
Didenko, L.
Djawotho, P.
Dogra, S. M.
Dong, X.
Drachenberg, J. L.
Draper, J. E.
Du, F.
Dunlop, J. C.
Mazumdar, M. R. Dutta
Edwards, W. R.
Efimov, L. G.
Elhalhuli, E.
Elnimr, M.
Emelianov, V.
Engelage, J.
Eppley, G.
Erazmus, B.
Estienne, M.
Eun, L.
Fachini, P.
Fatemi, R.
Fedorisin, J.
Feng, A.
Filip, P.
Finch, E.
Fine, V.
Fisyak, Y.
Gagliardi, C. A.
Gaillard, L.
Gangadharan, D. R.
Ganti, M. S.
Garcia-Solis, E.
Ghazikhanian, V.
Ghosh, P.
Gorbunov, Y. N.
Gordon, A.
Grebenyuk, O.
Grosnick, D.
Grube, B.
Guertin, S. M.
Guimaraes, K. S. F. F.
Gupta, A.
Gupta, N.
Guryn, W.
Haag, B.
Hallman, T. J.
Hamed, A.
Harris, J. W.
He, W.
Heinz, M.
Heppelmann, S.
Hippolyte, B.
Hirsch, A.
Hoffman, A. M.
Hoffmann, G. W.
Hofman, D. J.
Hollis, R. S.
Huang, H. Z.
Humanic, T. J.
Igo, G.
Iordanova, A.
Jacobs, P.
Jacobs, W. W.
Jakl, P.
Jin, F.
Jones, P. G.
Joseph, J.
Judd, E. G.
Kabana, S.
Kajimoto, K.
Kang, K.
Kapitan, J.
Kaplan, M.
Keane, D.
Kechechyan, A.
Kettler, D.
Khodyrev, V. Yu.
Kiryluk, J.
Kisiel, A.
Klein, S. R.
Knospe, A. G.
Kocoloski, A.
Koetke, D. D.
Kopytine, M.
Kotchenda, L.
Kouchpil, V.
Kravtsov, P.
Kravtsov, V. I.
Krueger, K.
Krus, M.
Kuhn, C.
Kumar, L.
Kurnadi, P.
Lamont, M. A. C.
Landgraf, J. M.
LaPointe, S.
Lauret, J.
Lebedev, A.
Lednicky, R.
Lee, C. -H.
LeVine, M. J.
Li, C.
Li, Y.
Lin, G.
Lin, X.
Lindenbaum, S. J.
Lisa, M. A.
Liu, F.
Liu, H.
Liu, J.
Liu, L.
Ljubicic, T.
Llope, W. J.
Longacre, R. S.
Love, W. A.
Lu, Y.
Ludlam, T.
Lynn, D.
Ma, G. L.
Ma, J. G.
Ma, Y. G.
Mahapatra, D. P.
Majka, R.
Mall, M. I.
Mangotra, L. K.
Manweiler, R.
Margetis, S.
Markert, C.
Matis, H. S.
Matulenko, Yu. A.
McShane, T. S.
Meschanin, A.
Millane, J.
Miller, M. L.
Minaev, N. G.
Mioduszewski, S.
Mischke, A.
Mitchell, J.
Mohanty, B.
Morozov, D. A.
Munhoz, M. G.
Nandi, B. K.
Nattrass, C.
Nayak, T. K.
Nelson, J. M.
Nepali, C.
Netrakanti, P. K.
Ng, M. J.
Nogach, L. V.
Nurushev, S. B.
Odyniec, G.
Ogawa, A.
Okada, H.
Okorokov, V.
Olson, D.
Pachr, M.
Page, B. S.
Pal, S. K.
Pandit, Y.
Panebratsev, Y.
Pawlak, T.
Peitzmann, T.
Perevoztchikov, V.
Perkins, C.
Peryt, W.
Phatak, S. C.
Planinic, M.
Pluta, J.
Poljak, N.
Poskanzer, A. M.
Potukuchi, B. V. K. S.
Prindle, D.
Pruneau, C.
Pruthi, N. K.
Putschke, J.
Raniwala, R.
Raniwala, S.
Ray, R. L.
Reed, R.
Ridiger, A.
Ritter, H. G.
Roberts, J. B.
Rogachevskiy, O. V.
Romero, J. L.
Rose, A.
Roy, C.
Ruan, L.
Russcher, M. J.
Rykov, V.
Sahoo, R.
Sakrejda, I.
Sakuma, T.
Salur, S.
Sandweiss, J.
Sarsour, M.
Schambach, J.
Scharenberg, R. P.
Schmitz, N.
Seger, J.
Selyuzhenkov, I.
Seyboth, P.
Shabetai, A.
Shahaliev, E.
Shao, M.
Sharma, M.
Shi, S. S.
Shi, X. -H.
Sichtermann, E. P.
Simon, F.
Singaraju, R. N.
Skoby, M. J.
Smirnov, N.
Snellings, R.
Sorensen, P.
Sowinski, J.
Spinka, H. M.
Srivastava, B.
Stadnik, A.
Stanislaus, T. D. S.
Staszak, D.
Strikhanov, M.
Stringfellow, B.
Suaide, A. A. P.
Suarez, M. C.
Subba, N. L.
Sumbera, M.
Sun, X. M.
Sun, Y.
Sun, Z.
Surrow, B.
Symons, T. J. M.
de Toledo, A. Szanto
Takahashi, J.
Tang, A. H.
Tang, Z.
Tarnowsky, T.
Thein, D.
Thomas, J. H.
Tian, J.
Timmins, A. R.
Timoshenko, S.
Tlusty
Tokarev, M.
Trainor, T. A.
Tram, V. N.
Trattner, A. L.
Trentalange, S.
Tribble, R. E.
Tsai, O. D.
Ulery, J.
Ullrich, T.
Underwood, D. G.
Van Buren, G.
van Leeuwen, M.
Vander Molen, A. M.
Vanfossen, J. A.
Varma, R., Jr.
Vasconcelos, G. M. S.
Vasilevski, I. M.
Vasiliev, A. N.
Videbaek, F.
Vigdor, S. E.
Viyogi, Y. P.
Vokal, S.
Voloshin, S. A.
Wada, M.
Waggoner, W. T.
Wang, F.
Wang, G.
Wang, J. S.
Wang, Q.
Wang, X.
Wang, X. L.
Wang, Y.
Webb, J. C.
Westfall, G. D.
Whitten, C., Jr.
Wieman, H.
Wissink, S. W.
Witt, R.
Wu, Y.
Xu, N.
Xu, Q. H.
Xu, Y.
Xu, Z.
Yepes, P.
Yoo, I. -K.
Yue, Q.
Zawisza, M.
Zbroszczyk, H.
Zhan, W.
Zhang, H.
Zhang, S.
Zhang, W. M.
Zhang, Y.
Zhang, Z. P.
Zhao, Y.
Zhong, C.
Zhou, J.
Zoulkarneev, R.
Zoulkarneeva, Y.
Zuo, J. X.
CA STAR Collaboration
TI Measurements of phi meson production in relativistic heavy-ion
collisions at the BNL Relativistic Heavy Ion Collider (RHIC)
SO PHYSICAL REVIEW C
LA English
DT Review
ID QUARK-GLUON-PLASMA; LARGE TRANSVERSE-MOMENTUM; NUCLEUS-NUCLEUS
COLLISIONS; TIME PROJECTION CHAMBER; PLUS AU COLLISIONS; ELLIPTIC FLOW;
STRANGENESS PRODUCTION; PHASE-TRANSITION; D+AU COLLISIONS; HADRONIC
MATTER
AB We present results for the measurement of phi meson production via its charged kaon decay channel phi -> K+ K- Au + Au collisions at root S-NN = 62.4, 130, and 200 GeV, and in p + p and d + Au collisions at v root S-NN = 200 GeV from the STAR experiment at the BNL Relativistic Heavy Ion Collider (RHIC). The midrapidity (vertical bar y vertical bar < 0.5) phi meson transverse momentum (p(T)) spectra in central Au + Au collisions are found to be well described by a single exponential distribution. On the other hand, the p(T) spectra from p + p, d + Au, and peripheral Au + Au collisions show power-law tails at intermediate and high p(T) and are described better by Levy distributions. The constant phi/K- yield ratio vs beam species, collision centrality, and colliding energy is in contradiction with expectations from models having kaon coalescence as the dominant mechanism for phi production at RHIC. The Omega/phi yield ratio as a function of p(T) is consistent with a model based on the recombination of thermal s quarks up to p(T) similar to 4 GeV/c, but disagrees at higher transverse momenta. The measured nuclear modification factor, R-dAu, for the phi meson increases above unity at intermediate p(T), similar to that for pions and protons, while R-AA is suppressed due to the energy loss effect in central Au + Au collisions. Number of constituent quark scaling of both R-cp and nu(2) for the phi meson with respect to other hadrons in Au + Au collisions at root S-NN = 200 GeV at intermediate pT is observed. These observations support quark coalescence as being the dominant mechanism of hadronization in the intermediate p(T) region at RHIC.
C1 [Krueger, K.; Spinka, H. M.; Underwood, D. G.] Argonne Natl Lab, Argonne, IL 60439 USA.
[Beavis, D. R.; Bland, L. C.; Bueltmann, S.; Christie, W.; Chung, S. U.; DePhillips, M.; Didenko, L.; Dunlop, J. C.; Fachini, P.; Fine, V.; Fisyak, Y.; Gordon, A.; Guryn, W.; Hallman, T. J.; Lamont, M. A. C.; Landgraf, J. M.; Lauret, J.; Lebedev, A.; LeVine, M. J.; Ljubicic, T.; Longacre, R. S.; Love, W. A.; Ludlam, T.; Lynn, D.; Ogawa, A.; Okada, H.; Perevoztchikov, V.; Ruan, L.; Sorensen, P.; Tang, A. H.; Ullrich, T.; Van Buren, G.; Videbaek, F.; Xu, Z.; Zhang, H.] Brookhaven Natl Lab, Upton, NY 11973 USA.
[Crawford, H. J.; Engelage, J.; Judd, E. G.; Ng, M. J.; Perkins, C.; Trattner, A. L.] Univ Calif Berkeley, Berkeley, CA 94720 USA.
[Sanchez, M. Calderon de la Barca; Cebra, D.; Das, D.; Draper, J. E.; Haag, B.; Liu, H.; Mall, M. I.; Reed, R.; Romero, J. L.] Univ Calif Davis, Davis, CA 95616 USA.
[Biritz, B.; Cendejas, R.; Gangadharan, D. R.; Ghazikhanian, V.; Guertin, S. M.; Huang, H. Z.; Igo, G.; Kurnadi, P.; Ma, J. G.; Staszak, D.; Trentalange, S.; Tsai, O. D.; Wang, G.; Whitten, C., Jr.] Univ Calif Los Angeles, Los Angeles, CA 90095 USA.
[de Souza, R. Derradi; Takahashi, J.; Vasconcelos, G. M. S.] Univ Estadual Campinas, Sao Paulo, Brazil.
[Kaplan, M.] Carnegie Mellon Univ, Pittsburgh, PA 15213 USA.
[Abelev, B. I.; Barannikova, O.; Betts, R. R.; Callner, J.; Garcia-Solis, E.; Hofman, D. J.; Hollis, R. S.; Iordanova, A.; Suarez, M. C.] Univ Illinois, Chicago, IL 60607 USA.
[Cherney, M.; Gorbunov, Y. N.; McShane, T. S.; Seger, J.; Waggoner, W. T.] Creighton Univ, Omaha, NE 68178 USA.
[Bielcik, J.; Bielcikova, J.; Bystersky, M.; Chaloupka, P.; Jakl, P.; Kapitan, J.; Kouchpil, V.; Krus, M.; Pachr, M.; Sumbera, M.; Tlusty] AS CR, Inst Nucl Phys, CZ-25068 Rez, Czech Republic.
[Averichev, G. S.; Dedovich, T. G.; Efimov, L. G.; Fedorisin, J.; Kechechyan, A.; Panebratsev, Y.; Rogachevskiy, O. V.; Shahaliev, E.; Stadnik, A.; Tokarev, M.; Vokal, S.] Joint Inst Nucl Res Dubna, Lab High Energy, Dubna, Russia.
[Arkhipkin, D.; Filip, P.; Lednicky, R.; Vasilevski, I. M.; Zoulkarneev, R.; Zoulkarneeva, Y.] Joint Inst Nucl Res Dubna, Particle Phys Lab, Dubna, Russia.
[Dash, S.; Mahapatra, D. P.; Phatak, S. C.; Viyogi, Y. P.] Inst Phys, Bhubaneswar 751005, Orissa, India.
[Nandi, B. K.; Varma, R., Jr.] Indian Inst Technol, Mumbai 400076, Maharashtra, India.
[Djawotho, P.; He, W.; Jacobs, W. W.; Page, B. S.; Selyuzhenkov, I.; Sowinski, J.; Vigdor, S. E.; Wissink, S. W.] Indiana Univ, Bloomington, IN 47408 USA.
[Baudot, J.; Coffin, J. P.; Estienne, M.; Hippolyte, B.; Kuhn, C.; Shabetai, A.] Inst Rech Subatom, Strasbourg, France.
[Bhasin, A.; Dogra, S. M.; Gupta, A.; Gupta, N.; Mangotra, L. K.; Potukuchi, B. V. K. S.] Univ Jammu, Jammu 180001, India.
[Anderson, B. D.; Bouchet, J.; Joseph, J.; Keane, D.; Kopytine, M.; Margetis, S.; Nepali, C.; Pandit, Y.; Rykov, V.; Subba, N. L.; Vanfossen, J. A.; Zhang, W. M.] Kent State Univ, Kent, OH 44242 USA.
[Fatemi, R.] Univ Kentucky, Lexington, KY 40506 USA.
[Sun, Z.; Wang, J. S.; Zhan, W.] Inst Modern Phys, Lanzhou, Peoples R China.
[Blyth, S. -L.; Dong, X.; Edwards, W. R.; Grebenyuk, O.; Jacobs, P.; Kiryluk, J.; Klein, S. R.; Matis, H. S.; Odyniec, G.; Olson, D.; Poskanzer, A. M.; Ritter, H. G.; Rose, A.; Sakrejda, I.; Salur, S.; Sichtermann, E. P.; Sun, X. M.; Symons, T. J. M.; Thomas, J. H.; Tram, V. N.; Wieman, H.; Xu, N.; Xu, Q. H.] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
[Balewski, J.; Hoffman, A. M.; Kocoloski, A.; Millane, J.; Miller, M. L.; Sakuma, T.; Surrow, B.] MIT, Cambridge, MA 02139 USA.
[Schmitz, N.; Seyboth, P.; Simon, F.] Max Planck Inst Phys & Astrophys, D-80805 Munich, Germany.
[Vander Molen, A. M.; Westfall, G. D.] Michigan State Univ, E Lansing, MI 48824 USA.
[Brandin, A. V.; Emelianov, V.; Kotchenda, L.; Kravtsov, P.; Okorokov, V.; Ridiger, A.; Strikhanov, M.; Timoshenko, S.] Moscow Engn Phys Inst, Moscow 115409, Russia.
[Lindenbaum, S. J.] CUNY City Coll, New York, NY 10031 USA.
[Bai, Y.; Benedosso, F.; Botje, M.; Braidot, E.; Mischke, A.; Peitzmann, T.; Russcher, M. J.; Snellings, R.; van Leeuwen, M.] NIKHEF, Amsterdam, Netherlands.
[Chajecki, Z.; Humanic, T. J.; Kisiel, A.; Lisa, M. A.] Ohio State Univ, Columbus, OH 43210 USA.
[Aggarwal, M. M.; Bhati, A. K.; Kumar, L.; Pruthi, N. K.] Panjab Univ, Chandigarh 160014, India.
[Eun, L.; Heppelmann, S.] Penn State Univ, University Pk, PA 16802 USA.
[Derevschikov, A. A.; Khodyrev, V. Yu.; Kravtsov, V. I.; Matulenko, Yu. A.; Meschanin, A.; Minaev, N. G.; Morozov, D. A.; Nogach, L. V.; Nurushev, S. B.; Vasiliev, A. N.] Inst High Energy Phys, Protvino, Russia.
[Hirsch, A.; Netrakanti, P. K.; Scharenberg, R. P.; Skoby, M. J.; Srivastava, B.; Stringfellow, B.; Tarnowsky, T.; Ulery, J.; Wang, F.; Wang, Q.] Purdue Univ, W Lafayette, IN 47907 USA.
[Choi, K. E.; Grube, B.; Lee, C. -H.; Yoo, I. -K.] Pusan Natl Univ, Pusan 609735, South Korea.
[Bhardwaj, S.; Raniwala, R.; Raniwala, S.] Univ Rajasthan, Jaipur 302004, Rajasthan, India.
[Bonner, B. E.; Eppley, G.; Liu, J.; Llope, W. J.; Mitchell, J.; Roberts, J. B.; Yepes, P.; Zhou, J.] Rice Univ, Houston, TX 77251 USA.
[Cosentino, M. R.; Guimaraes, K. S. F. F.; Munhoz, M. G.; Suaide, A. A. P.; de Toledo, A. Szanto] Univ Sao Paulo, Sao Paulo, Brazil.
[Chen, H. F.; Li, C.; Lu, Y.; Shao, M.; Sun, Y.; Tang, Z.; Wang, X. L.; Xu, Y.; Zhang, Y.; Zhang, Z. P.; Zhao, Y.] Univ Sci & Technol China, Hefei 230026, Peoples R China.
[Cai, X. Z.; Chen, J. H.; Jin, F.; Ma, G. L.; Ma, Y. G.; Shi, X. -H.; Tian, J.; Zhang, S.; Zhong, C.; Zuo, J. X.] Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China.
[Erazmus, B.; Kabana, S.; Roy, C.; Sahoo, R.] SUBATECH, Nantes, France.
[Cervantes, M. C.; Clarke, R. F.; Codrington, M. J. M.; Drachenberg, J. L.; Gagliardi, C. A.; Hamed, A.; Mioduszewski, S.; Sarsour, M.; Tribble, R. E.] Texas A&M Univ, College Stn, TX 77843 USA.
[Daugherity, M.; Hoffmann, G. W.; Kajimoto, K.; Markert, C.; Ray, R. L.; Schambach, J.; Thein, D.; Wada, M.] Univ Texas Austin, Austin, TX 78712 USA.
[Cheng, J.; Kang, K.; Li, Y.; Wang, X.; Wang, Y.; Yue, Q.] Tsinghua Univ, Beijing 100084, Peoples R China.
[Witt, R.] USN Acad, Annapolis, MD 21402 USA.
[Grosnick, D.; Koetke, D. D.; Manweiler, R.; Stanislaus, T. D. S.; Webb, J. C.] Valparaiso Univ, Valparaiso, IN 46383 USA.
[Ahammed, Z.; Chattopadhyay, S.; Mazumdar, M. R. Dutta; Ganti, M. S.; Ghosh, P.; Mohanty, B.; Nayak, T. K.; Pal, S. K.; Singaraju, R. N.] Ctr Variable Energy Cyclotron, Kolkata 700064, India.
[Pawlak, T.; Peryt, W.; Pluta, J.; Zawisza, M.; Zbroszczyk, H.] Warsaw Univ Technol, Warsaw, Poland.
[Bichsel, H.; Cramer, J. G.; Kettler, D.; Prindle, D.; Trainor, T. A.] Univ Washington, Seattle, WA 98195 USA.
[Bellwied, R.; Cormier, T. M.; De Silva, C.; Elnimr, M.; LaPointe, S.; Pruneau, C.; Sharma, M.; Voloshin, S. A.] Wayne State Univ, Detroit, MI 48201 USA.
[Chen, J. Y.; Feng, A.; Lin, X.; Liu, F.; Liu, L.; Shi, S. S.; Wu, Y.] HZNU, CCNU, Inst Particle Phys, Wuhan 430079, Peoples R China.
[Baumgart, S.; Bruna, E.; Caines, H.; Catu, O.; Chikanian, A.; Du, F.; Finch, E.; Harris, J. W.; Heinz, M.; Knospe, A. G.; Lin, G.; Majka, R.; Nattrass, C.; Putschke, J.; Sandweiss, J.; Smirnov, N.] Yale Univ, New Haven, CT 06520 USA.
[Planinic, M.; Poljak, N.] Univ Zagreb, HR-10002 Zagreb, Croatia.
[Barnby, L. S.; Bombara, M.; Burton, T. P.; Elhalhuli, E.; Gaillard, L.; Jones, P. G.; Nelson, J. M.; Timmins, A. R.] Univ Birmingham, Birmingham, W Midlands, England.
[Bai, Y.; Benedosso, F.; Botje, M.; Braidot, E.; Mischke, A.; Peitzmann, T.; Russcher, M. J.; Snellings, R.; van Leeuwen, M.] Univ Utrecht, Amsterdam, Netherlands.
RP Abelev, BI (reprint author), Argonne Natl Lab, Argonne, IL 60439 USA.
RI Strikhanov, Mikhail/P-7393-2014; Dogra, Sunil /B-5330-2013; Fornazier
Guimaraes, Karin Silvia/H-4587-2016; Chaloupka, Petr/E-5965-2012;
Nattrass, Christine/J-6752-2016; Suaide, Alexandre/L-6239-2016; Inst. of
Physics, Gleb Wataghin/A-9780-2017; Okorokov, Vitaly/C-4800-2017; Ma,
Yu-Gang/M-8122-2013; Derradi de Souza, Rafael/M-4791-2013; Barnby,
Lee/G-2135-2010; Mischke, Andre/D-3614-2011; Takahashi, Jun/B-2946-2012;
Ma, Guo-Liang/B-4166-2012; Planinic, Mirko/E-8085-2012; Yoo,
In-Kwon/J-6222-2012; Peitzmann, Thomas/K-2206-2012; Witt,
Richard/H-3560-2012; Voloshin, Sergei/I-4122-2013; Pandit,
Yadav/I-2170-2013; Lednicky, Richard/K-4164-2013; Cosentino,
Mauro/L-2418-2014; Sumbera, Michal/O-7497-2014
OI Strikhanov, Mikhail/0000-0003-2586-0405; Fornazier Guimaraes, Karin
Silvia/0000-0003-0578-9533; Nattrass, Christine/0000-0002-8768-6468;
Suaide, Alexandre/0000-0003-2847-6556; Okorokov,
Vitaly/0000-0002-7162-5345; Ma, Yu-Gang/0000-0002-0233-9900; Derradi de
Souza, Rafael/0000-0002-2084-7001; Barnby, Lee/0000-0001-7357-9904;
Takahashi, Jun/0000-0002-4091-1779; Peitzmann,
Thomas/0000-0002-7116-899X; Pandit, Yadav/0000-0003-2809-7943;
Cosentino, Mauro/0000-0002-7880-8611; Sumbera,
Michal/0000-0002-0639-7323
FU Offices of NP; HEP; US DOE Office of Science; US NSF; Sloan Foundation;
DFG Excellence Cluster EXC153 of Germany [CNRS/IN2P3]; RA; RPL; EMN of
France; STFC; EPSRC of the United Kingdom; FAPESP of Brazil; Russian
Ministry of Sci. and Tech; NNSFC; CAS; MoST; MoE of China; IRP; GA of
the Czech Republic; FOM of the Netherlands; DAE; DST; CSIR of the
Government of India; Swiss NSF; Polish State Committee for Scientific
Research; Korea Sci. & Eng. Foundation
FX We thank the RHIC Operations Group and RCF at BNL, the NERSC Center at
LBNL, and the resources provided by the Open Science Grid consortium for
their support. This work was supported in part by the Offices of NP and
HEP within the US DOE Office of Science, the US NSF, the Sloan
Foundation, the DFG Excellence Cluster EXC153 of Germany, CNRS/IN2P3,
RA, RPL, and EMN of France, STFC and EPSRC of the United Kingdom, FAPESP
of Brazil, the Russian Ministry of Sci. and Tech., the NNSFC, CAS, MoST,
and MoE of China, IRP and GA of the Czech Republic, FOM of the
Netherlands, DAE, DST, and CSIR of the Government of India, Swiss NSF,
the Polish State Committee for Scientific Research, and the Korea Sci. &
Eng. Foundation.
NR 117
TC 66
Z9 67
U1 0
U2 20
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0556-2813
EI 1089-490X
J9 PHYS REV C
JI Phys. Rev. C
PD JUN
PY 2009
VL 79
IS 6
AR 064903
DI 10.1103/PhysRevC.79.064903
PG 20
WC Physics, Nuclear
SC Physics
GA 466YK
UT WOS:000267701200060
ER
PT J
AU Abelev, BI
Aggarwal, MM
Ahammed, Z
Anderson, BD
Arkhipkin, D
Averichev, GS
Balewski, J
Barannikova, O
Barnby, LS
Baudot, J
Baumgart, S
Beavis, DR
Bellwied, R
Benedosso, F
Betancourt, MJ
Betts, RR
Bhasin, A
Bhati, AK
Bichsel, H
Bielcik, J
Bielcikova, J
Biritz, B
Bland, LC
Bombara, M
Bonner, BE
Botje, M
Bouchet, J
Braidot, E
Brandin, AV
Bruna, E
Bueltmann, S
Burton, TP
Bystersky, M
Cai, XZ
Caines, H
Sanchez, MCD
Catu, O
Cebra, D
Cendejas, R
Cervantes, MC
Chajecki, Z
Chaloupka, P
Chattopadhyay, S
Chen, HF
Chen, JH
Chen, JY
Cheng, J
Cherney, M
Chikanian, A
Choi, KE
Christie, W
Clarke, RF
Codrington, MJM
Corliss, R
Cormier, TM
Cosentino, MR
Cramer, JG
Crawford, HJ
Das, D
Dash, S
Daugherity, M
De Silva, LC
Dedovich, TG
DePhillips, M
Derevschikov, AA
de Souza, RD
Didenko, L
Djawotho, P
Dogra, SM
Dong, X
Drachenberg, JL
Draper, JE
Du, F
Dunlop, JC
Mazumdar, MRD
Edwards, WR
Efimov, LG
Elhalhuli, E
Elnimr, M
Emelianov, V
Engelage, J
Eppley, G
Erazmus, B
Estienne, M
Eun, L
Fachini, P
Fatemi, R
Fedorisin, J
Feng, A
Filip, P
Finch, E
Fine, V
Fisyak, Y
Gagliardi, CA
Gaillard, L
Gangadharan, DR
Ganti, MS
Garcia-Solis, EJ
Geromitsos, A
Geurts, F
Ghazikhanian, V
Ghosh, P
Gorbunov, YN
Gordon, A
Grebenyuk, O
Grosnick, D
Grube, B
Guertin, SM
Guimaraes, KSFF
Gupta, A
Gupta, N
Guryn, W
Haag, B
Hallman, TJ
Hamed, A
Harris, JW
He, W
Heinz, M
Heppelmann, S
Hippolyte, B
Hirsch, A
Hjort, E
Hoffman, AM
Hoffmann, GW
Hofman, DJ
Hollis, RS
Huang, HZ
Humanic, TJ
Igo, G
Iordanova, A
Jacobs, P
Jacobs, WW
Jakl, P
Jena, C
Jin, F
Jones, CL
Jones, PG
Joseph, J
Judd, EG
Kabana, S
Kajimoto, K
Kang, K
Kapitan, J
Keane, D
Kechechyan, A
Kettler, D
Khodyrev, VY
Kikola, DP
Kiryluk, J
Kisiel, A
Klein, SR
Knospe, AG
Kocoloski, A
Koetke, DD
Kopytine, M
Korsch, W
Kotchenda, L
Kouchpil, V
Kravtsov, P
Kravtsov, VI
Krueger, K
Krus, M
Kuhn, C
Kumar, L
Kurnadi, P
Lamont, MAC
Landgraf, JM
LaPointe, S
Lauret, J
Lebedev, A
Lednicky, R
Lee, CH
Lee, JH
Leight, W
LeVine, MJ
Li, N
Li, C
Li, Y
Lin, G
Lindenbaum, SJ
Lisa, MA
Liu, F
Liu, J
Liu, L
Ljubicic, T
Llope, WJ
Longacre, RS
Love, WA
Lu, Y
Ludlam, T
Ma, GL
Ma, YG
Mahapatra, DP
Majka, R
Mall, OI
Mangotra, LK
Manweiler, R
Margetis, S
Markert, C
Matis, HS
Matulenko, YA
McShane, TS
Meschanin, A
Milner, R
Minaev, NG
Mioduszewski, S
Mischke, A
Mitchell, J
Mohanty, B
Morozov, DA
Munhoz, MG
Nandi, BK
Nattrass, C
Nayak, TK
Nelson, JM
Netrakanti, PK
Ng, MJ
Nogach, LV
Nurushev, SB
Odyniec, G
Ogawa, A
Okada, H
Okorokov, V
Olson, D
Pachr, M
Page, BS
Pal, SK
Pandit, Y
Panebratsev, Y
Pawlak, T
Peitzmann, T
Perevoztchikov, V
Perkins, C
Peryt, W
Phatak, SC
Planinic, M
Pluta, J
Poljak, N
Poskanzer, AM
Potukuchi, BVKS
Prindle, D
Pruneau, C
Pruthi, NK
Putschke, J
Raniwala, R
Raniwala, S
Ray, RL
Redwine, R
Reed, R
Ridiger, A
Ritter, HG
Roberts, JB
Rogachevskiy, OV
Romero, JL
Rose, A
Roy, C
Ruan, L
Russcher, MJ
Sahoo, R
Sakrejda, I
Sakuma, T
Salur, S
Sandweiss, J
Sarsour, M
Schambach, J
Scharenberg, RP
Schmitz, N
Seger, J
Selyuzhenkov, I
Seyboth, P
Shabetai, A
Shahaliev, E
Shao, M
Sharma, M
Shi, SS
Shi, XH
Sichtermann, EP
Simon, F
Singaraju, RN
Skoby, MJ
Smirnov, N
Snellings, R
Sorensen, P
Sowinski, J
Spinka, HM
Srivastava, B
Stadnik, A
Stanislaus, TDS
Staszak, D
Strikhanov, M
Stringfellow, B
Suaide, AAP
Suarez, MC
Subba, NL
Sumbera, M
Sun, XM
Sun, Y
Sun, Z
Surrow, B
Symons, TJM
de Toledo, AS
Takahashi, J
Tang, AH
Tang, Z
Tarnowsky, T
Thein, D
Thomas, JH
Tian, J
Timmins, AR
Timoshenko, S
Tlusty, D
Tokarev, M
Trainor, TA
Tram, VN
Trattner, AL
Trentalange, S
Tribble, RE
Tsai, OD
Ulery, J
Ullrich, T
Underwood, DG
Van Buren, G
van Leeuwen, M
Molen, AMV
Vanfossen, JA
Varma, R
Vasconcelos, GMS
Vasilevski, IM
Vasiliev, AN
Videbaek, F
Vigdor, SE
Viyogi, YP
Vokal, S
Voloshin, SA
Wada, M
Waggoner, WT
Walker, M
Wang, F
Wang, G
Wang, JS
Wang, Q
Wang, X
Wang, XL
Wang, Y
Webb, G
Webb, JC
Westfall, GD
Whitten, C
Wieman, H
Wissink, SW
Witt, R
Wu, Y
Xie, W
Xu, N
Xu, QH
Xu, Y
Xu, Z
Yang, Y
Yepes, P
Yoo, IK
Yue, Q
Zawisza, M
Zbroszczyk, H
Zhan, W
Zhang, S
Zhang, WM
Zhang, XP
Zhang, Y
Zhang, ZP
Zhao, Y
Zhong, C
Zhou, J
Zoulkarneev, R
Zoulkarneeva, Y
Zuo, JX
AF Abelev, B. I.
Aggarwal, M. M.
Ahammed, Z.
Anderson, B. D.
Arkhipkin, D.
Averichev, G. S.
Balewski, J.
Barannikova, O.
Barnby, L. S.
Baudot, J.
Baumgart, S.
Beavis, D. R.
Bellwied, R.
Benedosso, F.
Betancourt, M. J.
Betts, R. R.
Bhasin, A.
Bhati, A. K.
Bichsel, H.
Bielcik, J.
Bielcikova, J.
Biritz, B.
Bland, L. C.
Bombara, M.
Bonner, B. E.
Botje, M.
Bouchet, J.
Braidot, E.
Brandin, A. V.
Bruna, E.
Bueltmann, S.
Burton, T. P.
Bystersky, M.
Cai, X. Z.
Caines, H.
Sanchez, M. Calderon de la Barca
Catu, O.
Cebra, D.
Cendejas, R.
Cervantes, M. C.
Chajecki, Z.
Chaloupka, P.
Chattopadhyay, S.
Chen, H. F.
Chen, J. H.
Chen, J. Y.
Cheng, J.
Cherney, M.
Chikanian, A.
Choi, K. E.
Christie, W.
Clarke, R. F.
Codrington, M. J. M.
Corliss, R.
Cormier, T. M.
Cosentino, M. R.
Cramer, J. G.
Crawford, H. J.
Das, D.
Dash, S.
Daugherity, M.
De Silva, L. C.
Dedovich, T. G.
DePhillips, M.
Derevschikov, A. A.
de Souza, R. Derradi
Didenko, L.
Djawotho, P.
Dogra, S. M.
Dong, X.
Drachenberg, J. L.
Draper, J. E.
Du, F.
Dunlop, J. C.
Mazumdar, M. R. Dutta
Edwards, W. R.
Efimov, L. G.
Elhalhuli, E.
Elnimr, M.
Emelianov, V.
Engelage, J.
Eppley, G.
Erazmus, B.
Estienne, M.
Eun, L.
Fachini, P.
Fatemi, R.
Fedorisin, J.
Feng, A.
Filip, P.
Finch, E.
Fine, V.
Fisyak, Y.
Gagliardi, C. A.
Gaillard, L.
Gangadharan, D. R.
Ganti, M. S.
Garcia-Solis, E. J.
Geromitsos, A.
Geurts, F.
Ghazikhanian, V.
Ghosh, P.
Gorbunov, Y. N.
Gordon, A.
Grebenyuk, O.
Grosnick, D.
Grube, B.
Guertin, S. M.
Guimaraes, K. S. F. F.
Gupta, A.
Gupta, N.
Guryn, W.
Haag, B.
Hallman, T. J.
Hamed, A.
Harris, J. W.
He, W.
Heinz, M.
Heppelmann, S.
Hippolyte, B.
Hirsch, A.
Hjort, E.
Hoffman, A. M.
Hoffmann, G. W.
Hofman, D. J.
Hollis, R. S.
Huang, H. Z.
Humanic, T. J.
Igo, G.
Iordanova, A.
Jacobs, P.
Jacobs, W. W.
Jakl, P.
Jena, C.
Jin, F.
Jones, C. L.
Jones, P. G.
Joseph, J.
Judd, E. G.
Kabana, S.
Kajimoto, K.
Kang, K.
Kapitan, J.
Keane, D.
Kechechyan, A.
Kettler, D.
Khodyrev, V. Yu.
Kikola, D. P.
Kiryluk, J.
Kisiel, A.
Klein, S. R.
Knospe, A. G.
Kocoloski, A.
Koetke, D. D.
Kopytine, M.
Korsch, W.
Kotchenda, L.
Kouchpil, V.
Kravtsov, P.
Kravtsov, V. I.
Krueger, K.
Krus, M.
Kuhn, C.
Kumar, L.
Kurnadi, P.
Lamont, M. A. C.
Landgraf, J. M.
LaPointe, S.
Lauret, J.
Lebedev, A.
Lednicky, R.
Lee, C-H.
Lee, J. H.
Leight, W.
LeVine, M. J.
Li, N.
Li, C.
Li, Y.
Lin, G.
Lindenbaum, S. J.
Lisa, M. A.
Liu, F.
Liu, J.
Liu, L.
Ljubicic, T.
Llope, W. J.
Longacre, R. S.
Love, W. A.
Lu, Y.
Ludlam, T.
Ma, G. L.
Ma, Y. G.
Mahapatra, D. P.
Majka, R.
Mall, O. I.
Mangotra, L. K.
Manweiler, R.
Margetis, S.
Markert, C.
Matis, H. S.
Matulenko, Yu. A.
McShane, T. S.
Meschanin, A.
Milner, R.
Minaev, N. G.
Mioduszewski, S.
Mischke, A.
Mitchell, J.
Mohanty, B.
Morozov, D. A.
Munhoz, M. G.
Nandi, B. K.
Nattrass, C.
Nayak, T. K.
Nelson, J. M.
Netrakanti, P. K.
Ng, M. J.
Nogach, L. V.
Nurushev, S. B.
Odyniec, G.
Ogawa, A.
Okada, H.
Okorokov, V.
Olson, D.
Pachr, M.
Page, B. S.
Pal, S. K.
Pandit, Y.
Panebratsev, Y.
Pawlak, T.
Peitzmann, T.
Perevoztchikov, V.
Perkins, C.
Peryt, W.
Phatak, S. C.
Planinic, M.
Pluta, J.
Poljak, N.
Poskanzer, A. M.
Potukuchi, B. V. K. S.
Prindle, D.
Pruneau, C.
Pruthi, N. K.
Putschke, J.
Raniwala, R.
Raniwala, S.
Ray, R. L.
Redwine, R.
Reed, R.
Ridiger, A.
Ritter, H. G.
Roberts, J. B.
Rogachevskiy, O. V.
Romero, J. L.
Rose, A.
Roy, C.
Ruan, L.
Russcher, M. J.
Sahoo, R.
Sakrejda, I.
Sakuma, T.
Salur, S.
Sandweiss, J.
Sarsour, M.
Schambach, J.
Scharenberg, R. P.
Schmitz, N.
Seger, J.
Selyuzhenkov, I.
Seyboth, P.
Shabetai, A.
Shahaliev, E.
Shao, M.
Sharma, M.
Shi, S. S.
Shi, X-H.
Sichtermann, E. P.
Simon, F.
Singaraju, R. N.
Skoby, M. J.
Smirnov, N.
Snellings, R.
Sorensen, P.
Sowinski, J.
Spinka, H. M.
Srivastava, B.
Stadnik, A.
Stanislaus, T. D. S.
Staszak, D.
Strikhanov, M.
Stringfellow, B.
Suaide, A. A. P.
Suarez, M. C.
Subba, N. L.
Sumbera, M.
Sun, X. M.
Sun, Y.
Sun, Z.
Surrow, B.
Symons, T. J. M.
de Toledo, A. Szanto
Takahashi, J.
Tang, A. H.
Tang, Z.
Tarnowsky, T.
Thein, D.
Thomas, J. H.
Tian, J.
Timmins, A. R.
Timoshenko, S.
Tlusty, D.
Tokarev, M.
Trainor, T. A.
Tram, V. N.
Trattner, A. L.
Trentalange, S.
Tribble, R. E.
Tsai, O. D.
Ulery, J.
Ullrich, T.
Underwood, D. G.
Van Buren, G.
van Leeuwen, M.
Molen, A. M. Vander
Vanfossen, J. A., Jr.
Varma, R.
Vasconcelos, G. M. S.
Vasilevski, I. M.
Vasiliev, A. N.
Videbaek, F.
Vigdor, S. E.
Viyogi, Y. P.
Vokal, S.
Voloshin, S. A.
Wada, M.
Waggoner, W. T.
Walker, M.
Wang, F.
Wang, G.
Wang, J. S.
Wang, Q.
Wang, X.
Wang, X. L.
Wang, Y.
Webb, G.
Webb, J. C.
Westfall, G. D.
Whitten, C., Jr.
Wieman, H.
Wissink, S. W.
Witt, R.
Wu, Y.
Xie, W.
Xu, N.
Xu, Q. H.
Xu, Y.
Xu, Z.
Yang, Y.
Yepes, P.
Yoo, I-K.
Yue, Q.
Zawisza, M.
Zbroszczyk, H.
Zhan, W.
Zhang, S.
Zhang, W. M.
Zhang, X. P.
Zhang, Y.
Zhang, Z. P.
Zhao, Y.
Zhong, C.
Zhou, J.
Zoulkarneev, R.
Zoulkarneeva, Y.
Zuo, J. X.
CA STAR Collaboration
TI Measurement of D* mesons in jets from p plus p collisions at root s=200
GeV
SO PHYSICAL REVIEW D
LA English
DT Article
ID HEAVY-QUARK PRODUCTION; Z DECAYS; PHYSICS
AB We report the measurement of charged D* mesons in inclusive jets produced in proton-proton collisions at a center-of-mass energy root s = 200 GeV with the STAR experiment at the Relativistic Heavy Ion Collider. For D* mesons with fractional momenta 0.2< z< 0.5 in inclusive jets with 11.5 GeV mean transverse energy, the production rate is found to be N(D*(+) + D*(-))/N(jet) = 0.015 +/- 0.008(stat) +/- 0.007(sys). This rate is consistent with perturbative QCD evaluation of gluon splitting into a pair of charm quarks and subsequent hadronization.
C1 [Abelev, B. I.; Barannikova, O.; Betts, R. R.; Garcia-Solis, E. J.; Hofman, D. J.; Hollis, R. S.; Iordanova, A.; Suarez, M. C.] Univ Illinois, Chicago, IL 60607 USA.
[Beavis, D. R.; Bland, L. C.; Christie, W.; DePhillips, M.; Didenko, L.; Dunlop, J. C.; Fachini, P.; Fine, V.; Fisyak, Y.; Gordon, A.; Guryn, W.; Hallman, T. J.; Lamont, M. A. C.; Landgraf, J. M.; Lauret, J.; Lebedev, A.; Lee, J. H.; LeVine, M. J.; Ljubicic, T.; Longacre, R. S.; Love, W. A.; Ludlam, T.; Ogawa, A.; Okada, H.; Perevoztchikov, V.; Ruan, L.; Sorensen, P.; Tang, A. H.; Ullrich, T.; Van Buren, G.; Videbaek, F.; Xu, Z.] Brookhaven Natl Lab, Upton, NY 11973 USA.
[Crawford, H. J.; Engelage, J.; Judd, E. G.; Ng, M. J.; Perkins, C.; Trattner, A. L.] Univ Calif Berkeley, Berkeley, CA 94720 USA.
[Sanchez, M. Calderon de la Barca; Cebra, D.; Das, D.; Draper, J. E.; Haag, B.; Mall, O. I.; Reed, R.; Romero, J. L.] Univ Calif Davis, Davis, CA 95616 USA.
[Biritz, B.; Cendejas, R.; Gangadharan, D. R.; Ghazikhanian, V.; Guertin, S. M.; Huang, H. Z.; Igo, G.; Kurnadi, P.; Staszak, D.; Trentalange, S.; Tsai, O. D.; Wang, G.; Whitten, C., Jr.] Univ Calif Los Angeles, Los Angeles, CA 90095 USA.
[de Souza, R. Derradi; Takahashi, J.; Vasconcelos, G. M. S.] Univ Estadual Campinas, Sao Paulo, Brazil.
[Cherney, M.; Gorbunov, Y. N.; McShane, T. S.; Seger, J.; Waggoner, W. T.] Creighton Univ, Omaha, NE 68178 USA.
[Bielcik, J.; Bielcikova, J.; Bystersky, M.; Chaloupka, P.; Jakl, P.; Kapitan, J.; Kouchpil, V.; Krus, M.; Pachr, M.; Sumbera, M.; Tlusty, D.] Nucl Phys Inst AS CR, Rez 25068, Czech Republic.
[Averichev, G. S.; Dedovich, T. G.; Efimov, L. G.; Fedorisin, J.; Kechechyan, A.; Panebratsev, Y.; Rogachevskiy, O. V.; Shahaliev, E.; Stadnik, A.; Tokarev, M.; Vokal, S.] Lab High Energy JINR, Dubna, Russia.
[Arkhipkin, D.; Filip, P.; Lednicky, R.; Vasilevski, I. M.; Zoulkarneev, R.; Zoulkarneeva, Y.] Particle Phys Lab JINR, Dubna, Russia.
[Dash, S.; Jena, C.; Mahapatra, D. P.; Phatak, S. C.; Viyogi, Y. P.] Inst Phys, Bhubaneswar 751005, Orissa, India.
[Nandi, B. K.; Varma, R.] Indian Inst Technol, Mumbai 400076, Maharashtra, India.
[He, W.; Jacobs, W. W.; Page, B. S.; Selyuzhenkov, I.; Sowinski, J.; Vigdor, S. E.; Wissink, S. W.] Indiana Univ, Bloomington, IN 47408 USA.
[Baudot, J.; Estienne, M.; Hippolyte, B.; Kuhn, C.; Shabetai, A.] Inst Rech Subatom, Strasbourg, France.
[Bhasin, A.; Dogra, S. M.; Gupta, A.; Gupta, N.; Mangotra, L. K.; Potukuchi, B. V. K. S.] Univ Jammu, Jammu 180001, India.
[Anderson, B. D.; Bouchet, J.; Chen, J. H.; Joseph, J.; Keane, D.; Kopytine, M.; Margetis, S.; Pandit, Y.; Subba, N. L.; Vanfossen, J. A., Jr.; Zhang, W. M.] Kent State Univ, Kent, OH 44242 USA.
[Fatemi, R.; Korsch, W.; Webb, G.] Univ Kentucky, Lexington, KY 40506 USA.
[Sun, Z.; Wang, J. S.; Yang, Y.; Zhan, W.] Inst Modern Phys, Lanzhou, Peoples R China.
[Dong, X.; Edwards, W. R.; Grebenyuk, O.; Hjort, E.; Jacobs, P.; Kikola, D. P.; Kiryluk, J.; Klein, S. R.; Matis, H. S.; Odyniec, G.; Olson, D.; Poskanzer, A. M.; Ritter, H. G.; Rose, A.; Sakrejda, I.; Salur, S.; Sichtermann, E. P.; Sun, X. M.; Symons, T. J. M.; Thomas, J. H.; Tram, V. N.; Wieman, H.; Xu, N.; Zhang, X. P.; Zhang, Y.] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
[Balewski, J.; Betancourt, M. J.; Corliss, R.; Hoffman, A. M.; Jones, C. L.; Kocoloski, A.; Leight, W.; Milner, R.; Redwine, R.; Sakuma, T.; Surrow, B.; Walker, M.] MIT, Cambridge, MA 02139 USA.
[Schmitz, N.; Seyboth, P.; Simon, F.] Max Planck Inst Phys & Astrophys, D-80805 Munich, Germany.
[Molen, A. M. Vander; Westfall, G. D.] Michigan State Univ, E Lansing, MI 48824 USA.
[Brandin, A. V.; Emelianov, V.; Kotchenda, L.; Kravtsov, P.; Okorokov, V.; Ridiger, A.; Strikhanov, M.; Timoshenko, S.] Moscow Engn Phys Inst, Moscow 115409, Russia.
[Lindenbaum, S. J.] CUNY City Coll, New York, NY 10031 USA.
[Benedosso, F.; Botje, M.; Braidot, E.; Mischke, A.; Peitzmann, T.; Russcher, M. J.; Snellings, R.; van Leeuwen, M.] NIKHEF, Amsterdam, Netherlands.
[Chajecki, Z.; Humanic, T. J.; Kisiel, A.; Lisa, M. A.] Ohio State Univ, Columbus, OH 43210 USA.
[Bueltmann, S.] Old Dominion Univ, Norfolk, VA 23529 USA.
[Aggarwal, M. M.; Bhati, A. K.; Kumar, L.; Pruthi, N. K.] Panjab Univ, Chandigarh 160014, India.
[Eun, L.; Heppelmann, S.] Penn State Univ, University Pk, PA 16802 USA.
[Derevschikov, A. A.; Khodyrev, V. Yu.; Kravtsov, V. I.; Matulenko, Yu. A.; Meschanin, A.; Minaev, N. G.; Morozov, D. A.; Nogach, L. V.; Nurushev, S. B.; Vasiliev, A. N.] Inst High Energy Phys, Protvino, Russia.
[Hirsch, A.; Netrakanti, P. K.; Scharenberg, R. P.; Skoby, M. J.; Srivastava, B.; Stringfellow, B.; Tarnowsky, T.; Ulery, J.; Wang, F.; Wang, Q.; Xie, W.] Purdue Univ, W Lafayette, IN 47907 USA.
[Choi, K. E.; Grube, B.; Lee, C-H.; Yoo, I-K.] Pusan Natl Univ, Pusan 609735, South Korea.
[Raniwala, R.; Raniwala, S.] Univ Rajasthan, Jaipur 302004, Rajasthan, India.
[Bonner, B. E.; Eppley, G.; Geurts, F.; Liu, J.; Llope, W. J.; Mitchell, J.; Roberts, J. B.; Yepes, P.; Zhou, J.] Rice Univ, Houston, TX 77251 USA.
[Cosentino, M. R.; Guimaraes, K. S. F. F.; Munhoz, M. G.; Suaide, A. A. P.; de Toledo, A. Szanto] Univ Sao Paulo, Sao Paulo, Brazil.
[Chen, H. F.; Li, C.; Lu, Y.; Shao, M.; Sun, Y.; Tang, Z.; Wang, X. L.; Xu, Y.; Zhang, Z. P.; Zhao, Y.] Univ Sci & Technol China, Hefei 230026, Peoples R China.
[Xu, Q. H.] Shandong Univ, Jinan 250100, Shandong, Peoples R China.
[Cai, X. Z.; Jin, F.; Ma, G. L.; Ma, Y. G.; Shi, X-H.; Tian, J.; Zhang, S.; Zhong, C.; Zuo, J. X.] Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China.
[Erazmus, B.; Geromitsos, A.; Kabana, S.; Roy, C.; Sahoo, R.] SUBATECH, Nantes, France.
[Cervantes, M. C.; Clarke, R. F.; Codrington, M. J. M.; Djawotho, P.; Drachenberg, J. L.; Gagliardi, C. A.; Hamed, A.; Mioduszewski, S.; Sarsour, M.; Tribble, R. E.] Texas A&M Univ, College Stn, TX 77843 USA.
[Daugherity, M.; Hoffmann, G. W.; Kajimoto, K.; Markert, C.; Ray, R. L.; Schambach, J.; Thein, D.; Wada, M.] Univ Texas Austin, Austin, TX 78712 USA.
[Cheng, J.; Kang, K.; Li, Y.; Wang, X.; Wang, Y.; Yue, Q.] Tsinghua Univ, Beijing 100084, Peoples R China.
[Witt, R.] USN Acad, Annapolis, MD 21402 USA.
[Grosnick, D.; Koetke, D. D.; Manweiler, R.; Stanislaus, T. D. S.; Webb, J. C.] Valparaiso Univ, Valparaiso, IN 46383 USA.
[Ahammed, Z.; Chattopadhyay, S.; Mazumdar, M. R. Dutta; Ganti, M. S.; Ghosh, P.; Mohanty, B.; Nayak, T. K.; Pal, S. K.; Singaraju, R. N.] Ctr Variable Energy Cyclotron, Kolkata 700064, India.
[Pawlak, T.; Peryt, W.; Pluta, J.; Zawisza, M.; Zbroszczyk, H.] Warsaw Univ Technol, Warsaw, Poland.
[Bichsel, H.; Cramer, J. G.; Kettler, D.; Prindle, D.; Trainor, T. A.] Univ Washington, Seattle, WA 98195 USA.
[Bellwied, R.; Cormier, T. M.; De Silva, L. C.; Elnimr, M.; LaPointe, S.; Pruneau, C.; Sharma, M.; Voloshin, S. A.] Wayne State Univ, Detroit, MI 48201 USA.
[Chen, J. Y.; Feng, A.; Li, N.; Liu, F.; Liu, L.; Shi, S. S.; Wu, Y.] CCNU HZNU, Inst Particle Phys, Wuhan 430079, Peoples R China.
[Baumgart, S.; Bruna, E.; Caines, H.; Catu, O.; Chikanian, A.; Du, F.; Finch, E.; Harris, J. W.; Heinz, M.; Knospe, A. G.; Lin, G.; Majka, R.; Nattrass, C.; Putschke, J.; Sandweiss, J.; Smirnov, N.] Yale Univ, New Haven, CT 06520 USA.
[Planinic, M.; Poljak, N.] Univ Zagreb, HR-10002 Zagreb, Croatia.
[Krueger, K.; Spinka, H. M.; Underwood, D. G.] Argonne Natl Lab, Argonne, IL 60439 USA.
[Barnby, L. S.; Bombara, M.; Burton, T. P.; Elhalhuli, E.; Gaillard, L.; Jones, P. G.; Nelson, J. M.; Timmins, A. R.] Univ Birmingham, Birmingham, W Midlands, England.
[Benedosso, F.; Botje, M.; Braidot, E.; Mischke, A.; Peitzmann, T.; Russcher, M. J.; Snellings, R.; van Leeuwen, M.] Univ Utrecht, Amsterdam, Netherlands.
RP Abelev, BI (reprint author), Univ Illinois, Chicago, IL 60607 USA.
RI Sumbera, Michal/O-7497-2014; Strikhanov, Mikhail/P-7393-2014; Dogra,
Sunil /B-5330-2013; Fornazier Guimaraes, Karin Silvia/H-4587-2016;
Chaloupka, Petr/E-5965-2012; Nattrass, Christine/J-6752-2016; Derradi de
Souza, Rafael/M-4791-2013; Suaide, Alexandre/L-6239-2016; Inst. of
Physics, Gleb Wataghin/A-9780-2017; Okorokov, Vitaly/C-4800-2017; Ma,
Yu-Gang/M-8122-2013; Takahashi, Jun/B-2946-2012; Planinic,
Mirko/E-8085-2012; Yoo, In-Kwon/J-6222-2012; Peitzmann,
Thomas/K-2206-2012; Witt, Richard/H-3560-2012; Voloshin,
Sergei/I-4122-2013; Pandit, Yadav/I-2170-2013; Lednicky,
Richard/K-4164-2013; Yang, Yanyun/B-9485-2014; Dong, Xin/G-1799-2014;
Cosentino, Mauro/L-2418-2014; Barnby, Lee/G-2135-2010; Mischke,
Andre/D-3614-2011
OI Sumbera, Michal/0000-0002-0639-7323; Strikhanov,
Mikhail/0000-0003-2586-0405; Fornazier Guimaraes, Karin
Silvia/0000-0003-0578-9533; Nattrass, Christine/0000-0002-8768-6468;
Derradi de Souza, Rafael/0000-0002-2084-7001; Suaide,
Alexandre/0000-0003-2847-6556; Okorokov, Vitaly/0000-0002-7162-5345; Ma,
Yu-Gang/0000-0002-0233-9900; Takahashi, Jun/0000-0002-4091-1779;
Peitzmann, Thomas/0000-0002-7116-899X; Pandit,
Yadav/0000-0003-2809-7943; Yang, Yanyun/0000-0002-5982-1706; Dong,
Xin/0000-0001-9083-5906; Cosentino, Mauro/0000-0002-7880-8611; Barnby,
Lee/0000-0001-7357-9904;
NR 31
TC 14
Z9 14
U1 0
U2 9
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 JUN
PY 2009
VL 79
IS 11
AR 112006
DI 10.1103/PhysRevD.79.112006
PG 7
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 466YL
UT WOS:000267701300009
ER
PT J
AU Menon, G
Dermer, CD
AF Menon, Govind
Dermer, Charles D.
TI Timelike geodesic currents in the stationary, axisymmetric, force-free
magnetosphere of a Kerr black hole
SO PHYSICAL REVIEW D
LA English
DT Article
ID ELECTRODYNAMICS; FORMULATION
AB The structural properties of geodesic currents in an ambient Kerr background are studied from an analytical point of view. The geodesics in this congruence may correspond to charged particles that carry energy and angular momentum from the black hole through the Blandford-Znajek mechanism. It is shown that the resulting magnetosphere naturally satisfies the Znajek regularity condition. Particular attention is paid here to the energy extracted by matter currents rather than by electromagnetic Poynting fluxes. This analytic study is motivated by the mathematical structure behind the Blandford-Znajek process, and may only have limited applications to the astrophysics of supermassive black holes.
C1 [Menon, Govind] Troy Univ, Dept Math & Phys, Troy, AL 36082 USA.
[Dermer, Charles D.] USN, Res Lab, EO Hulburt Ctr Space Res, Washington, DC 20375 USA.
RP Menon, G (reprint author), Troy Univ, Dept Math & Phys, Troy, AL 36082 USA.
FU NASA GLAST Science Investigation [DPR-S-1563-Y]; Office of Naval
Research
FX G. M. acknowledges funding through a Troy University faculty development
grant. This research is also supported through NASA GLAST Science
Investigation No. DPR-S-1563-Y. The work of CD.D. is supported by the
Office of Naval Research.
NR 16
TC 1
Z9 1
U1 0
U2 1
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 JUN
PY 2009
VL 79
IS 12
AR 123005
DI 10.1103/PhysRevD.79.123005
PG 8
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 466YN
UT WOS:000267701500011
ER
PT J
AU Wouchuk, JG
de Lira, CHR
Velikovich, AL
AF Wouchuk, J. G.
Ruiz de Lira, C. Huete
Velikovich, A. L.
TI Analytical linear theory for the interaction of a planar shock wave with
an isotropic turbulent vorticity field
SO PHYSICAL REVIEW E
LA English
DT Article
DE compressibility; compressible flow; Mach number; shock waves;
turbulence; vortices
ID PERTURBATION GROWTH; RAYLEIGH-TAYLOR; FLOW; DISCONTINUITY; STABILITY;
JUMP; PROPAGATION; INSTABILITY; SIMULATION
AB An exact analytical model for the interaction between an isolated shock wave and an isotropic turbulent vorticity field is presented. The interaction with a single-mode two-dimensional (2D) divergence-free vorticity field is analyzed in detail, giving the time and space evolutions of the perturbed quantities downstream. The results are generalized to study the interaction of a planar shock wave with an isotropic three-dimensional (3D) or 2D preshock vorticity field. This field is decomposed into Fourier modes, and each mode is assumed to interact independently with the shock front. Averages of the downstream quantities are made by integrating over the angles that define the orientation of the upstream velocity field. The ratio of downstream/upstream kinetic energies is in good agreement with existing numerical and experimental results for both 3D and 2D preshock vorticity fields. The generation of sound and the sonic energy flux radiated downstream from the shock front is also discussed in detail, as well as the amplification of transverse vorticity across the shock front. The anisotropy is calculated for the far downstream fields of both velocity and vorticity. All the quantities characteristic of the shock-turbulence interaction are reduced to closed-form exact analytical expressions. They are presented as explicit functions of the two parameters that govern the dynamics of the interaction: the adiabatic exponent gamma and the shock Mach number M(1). These formulas are further reduced to simpler exact asymptotic expressions in the limits of weak and strong shock waves (M(1)-1 < 1, M(1)1) and high shock compressibility of the gas (gamma -> 1).
C1 [Wouchuk, J. G.; Ruiz de Lira, C. Huete] Univ Castilla La Mancha, ETSII, Inst Invest Energet INEI, E-13071 Ciudad Real, Spain.
[Velikovich, A. L.] Naval Res Lab, Div Plasma Phys, Washington, DC 20375 USA.
RP Wouchuk, JG (reprint author), Univ Castilla La Mancha, ETSII, Inst Invest Energet INEI, Campus S-N, E-13071 Ciudad Real, Spain.
EM gustavo.wouchuk@uclm.es
RI Huete, Cesar/A-3184-2012; Wouchuk, J. G./F-1449-2016; Huete Ruiz de
Lira, Cesar/F-7412-2016
OI Huete, Cesar/0000-0002-3227-8520; Huete Ruiz de Lira,
Cesar/0000-0002-3227-8520
NR 58
TC 29
Z9 29
U1 0
U2 13
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 JUN
PY 2009
VL 79
IS 6
AR 066315
DI 10.1103/PhysRevE.79.066315
PG 35
WC Physics, Fluids & Plasmas; Physics, Mathematical
SC Physics
GA 466XP
UT WOS:000267698900057
PM 19658602
ER
PT J
AU Vikharev, AL
Gorbachev, AM
Ivanov, OA
Isaev, VA
Kuzikov, SV
Lobaev, MA
Hirshfield, JL
Gold, SH
Kinkead, AK
AF Vikharev, A. L.
Gorbachev, A. M.
Ivanov, O. A.
Isaev, V. A.
Kuzikov, S. V.
Lobaev, M. A.
Hirshfield, J. L.
Gold, S. H.
Kinkead, A. K.
TI High power active X-band pulse compressor using plasma switches
SO PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS
LA English
DT Article
AB Results obtained in several experiments on active rf pulse compression at X band using a magnicon as the high-power rf source are presented. In these experiments, microwave energy is stored in high-Q TE(01) and TE(02) modes of two parallel-fed resonators, and then discharged using switches activated with rapidly fired plasma discharge tubes. Designs and high-power tests of several versions of the compressor are described. In these experiments, coherent pulse superposition was demonstrated at a 5-9 MW level of incident power. The compressed pulses observed had powers of 50-70 MW and durations of 40-70 ns. Peak power gains were measured to be in the range of 7:1-11:1 with efficiency in the range of 50%-63%.
C1 [Vikharev, A. L.; Gorbachev, A. M.; Ivanov, O. A.; Isaev, V. A.; Kuzikov, S. V.; Lobaev, M. A.] RAS, Inst Appl Phys, Nizhnii Novgorod 603600, Russia.
[Vikharev, A. L.; Gorbachev, A. M.; Ivanov, O. A.; Hirshfield, J. L.] Omega P Inc, New Haven, CT 06510 USA.
[Hirshfield, J. L.] Yale Univ, Dept Phys, New Haven, CT 06511 USA.
[Gold, S. H.] USN, Res Lab, Div Plasma Phys, Washington, DC 20375 USA.
[Kinkead, A. K.] Icarus Res, Bethesda, MD 20814 USA.
RP Vikharev, AL (reprint author), RAS, Inst Appl Phys, Nizhnii Novgorod 603600, Russia.
FU U. S. Department of Energy, Office of High Energy Physics; U. S. Office
of Naval Research
FX This work was supported by the U. S. Department of Energy, Office of
High Energy Physics, and the U. S. Office of Naval Research.
NR 20
TC 13
Z9 13
U1 0
U2 5
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 JUN
PY 2009
VL 12
IS 6
AR 062003
DI 10.1103/PhysRevSTAB.12.062003
PG 12
WC Physics, Nuclear; Physics, Particles & Fields
SC Physics
GA 467SP
UT WOS:000267763000012
ER
PT J
AU Christov, CI
Jordan, PM
AF Christov, C. I.
Jordan, P. M.
TI Comment on "Stokes' first problem for an Oldroyd-B fluid in a porous
half space" [Phys. Fluids 17, 023101 (2005)]
SO PHYSICS OF FLUIDS
LA English
DT Editorial Material
DE boundary-value problems; computational fluid dynamics; Fourier
transforms; non-Newtonian fluids
AB We point out and correct a significant error in the analytical solution presented by Tan and Masuoka [Phys. Fluids 17, 023101 (2005)].
C1 [Christov, C. I.] Univ Louisiana Lafayette, Dept Math, Lafayette, LA 70504 USA.
[Jordan, P. M.] USN, Res Lab, Stennis Space Ctr, MS 39529 USA.
RP Christov, CI (reprint author), Univ Louisiana Lafayette, Dept Math, Lafayette, LA 70504 USA.
EM christov@louisiana.edu
RI Christov, Christo/C-1081-2008
NR 9
TC 10
Z9 10
U1 1
U2 4
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 1070-6631
J9 PHYS FLUIDS
JI Phys. Fluids
PD JUN
PY 2009
VL 21
IS 6
AR 069101
DI 10.1063/1.3126503
PG 2
WC Mechanics; Physics, Fluids & Plasmas
SC Mechanics; Physics
GA 465PU
UT WOS:000267600100043
ER
PT J
AU Colombant, D
Manheimer, W
AF Colombant, Denis
Manheimer, Wallace
TI Krook model for nonthermal electron energy transport. III. Spherical
configurations
SO PHYSICS OF PLASMAS
LA English
DT Article
DE laser fusion; plasma transport processes
ID HEAT-TRANSPORT
AB In earlier works the Krook model for nonlocal electron energy transport in laser produced plasmas was examined. This paper extends the earlier work by treating spherical configurations, specifically laser driven implosions. Additions to the theory due to spherical geometry are worked out. As in the planar case, the nonlocal effects manifest themselves both as flux limitation and preheat. Nonlocal transport does have an effect on the fusion gain of laser pellet implosions.
C1 [Colombant, Denis; Manheimer, Wallace] USN, Res Lab, Div Plasma Phys, Washington, DC 20375 USA.
RP Colombant, D (reprint author), USN, Res Lab, Div Plasma Phys, Washington, DC 20375 USA.
FU DoE/NNSA
FX This work was supported by DoE/NNSA. We would like to thank Valeri
Goncharov for discussions involving how frequently to calculate the
thermal flux.
NR 11
TC 8
Z9 8
U1 1
U2 2
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 1070-664X
J9 PHYS PLASMAS
JI Phys. Plasmas
PD JUN
PY 2009
VL 16
IS 6
AR 062705
DI 10.1063/1.3155445
PG 12
WC Physics, Fluids & Plasmas
SC Physics
GA 465PN
UT WOS:000267599400037
ER
PT J
AU Nusinovich, GS
Cooke, SJ
Botton, M
Levush, B
AF Nusinovich, Gregory S.
Cooke, Simon J.
Botton, Moti
Levush, Baruch
TI Wave coupling in sheet- and multiple-beam traveling-wave tubes
SO PHYSICS OF PLASMAS
LA English
DT Article
DE amplifiers; microwave tubes; plasma applications; plasma waves
ID FREE-ELECTRON LASER; AMPLIFIERS; KLYSTRONS
AB To increase the power level of the sources of coherent electromagnetic radiation at frequencies from 100 GHz up to the terahertz range it makes sense to develop devices with a spatially extended interaction space. Sheet-beam and multiple-beam devices belong to the category. In the present paper the small-signal theory of traveling-wave tubes with sheet-beam and multiple sheet-beam configurations is developed. It is shown that in such tubes the wave coupling on electron beams may occur even in small-signal regimes. The wave coupling and its role for amplification of forward and excitation of backward waves in such amplifiers is studied. Also the effect of transverse nonuniformity of the electromagnetic field on the device operation is analyzed and illustrated by several examples.
C1 [Nusinovich, Gregory S.] Sci Applicat Int Corp, Mclean, VA 22102 USA.
[Cooke, Simon J.; Levush, Baruch] USN, Res Lab, Washington, DC 20375 USA.
[Nusinovich, Gregory S.; Botton, Moti] Univ Maryland, IREAP, College Pk, MD 20742 USA.
[Botton, Moti] Hebrew Univ Jerusalem, Jerusalem, Israel.
RP Nusinovich, GS (reprint author), Sci Applicat Int Corp, 1710 SAIC Dr, Mclean, VA 22102 USA.
RI Cooke, Simon/A-9530-2010; Nusinovich, Gregory/C-1314-2017
OI Nusinovich, Gregory/0000-0002-8641-5156
FU Office of Naval Research
FX This work was supported by the Office of Naval Research.
NR 20
TC 15
Z9 15
U1 2
U2 17
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 1070-664X
J9 PHYS PLASMAS
JI Phys. Plasmas
PD JUN
PY 2009
VL 16
IS 6
AR 063102
DI 10.1063/1.3143123
PG 12
WC Physics, Fluids & Plasmas
SC Physics
GA 465PN
UT WOS:000267599400045
ER
PT J
AU Fuhs, AE
AF Fuhs, Allen E.
TI Recharging the batteries
SO PHYSICS TODAY
LA English
DT Letter
C1 USN, Postgrad Sch, Monterey, CA USA.
RP Fuhs, AE (reprint author), USN, Postgrad Sch, Monterey, CA USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0031-9228
J9 PHYS TODAY
JI Phys. Today
PD JUN
PY 2009
VL 62
IS 6
BP 10
EP 10
PG 1
WC Physics, Multidisciplinary
SC Physics
GA 457WK
UT WOS:000266965300006
ER
PT J
AU Nahrstedt, D
Hsia, YC
Jumper, E
Gordeyev, S
Ceniceros, J
Weaver, L
DeSandre, L
McLaughlin, T
AF Nahrstedt, D.
Hsia, Y-C
Jumper, E.
Gordeyev, S.
Ceniceros, J.
Weaver, L.
DeSandre, L.
McLaughlin, T.
TI Wind tunnel validation of computational fluid dynamics-based aero-optics
model
SO PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART G-JOURNAL OF
AEROSPACE ENGINEERING
LA English
DT Article
DE adaptive optics; aerodynamics; aero-optics; wavefront sensing; wind
tunnel
AB A computational fluid dynamics (CFD)-based aero-optics validation study was conducted in wind tunnel tests at the US Air Force Academy. A 12 in diameter hemisphere-on-cylinder laser turret was tested in the 3 ft x 3 ft subsonic wind tunnel at flow speeds ranging from mach 0.3 to 0.5. Flow validation was based on mean and rms velocity, mean pressure profile, rms unsteady pressure, and separation point. Optical validation was based on rms phase variance and inflow phase correlation length derived from two-dimensional Hartmann wavefront sensor data, measured over a 5 in beam. The CFD code used a two-equation turbulence model with partially-averaged Navier-Stokes approach. Good agreement was observed between measurements and predictions over line-of-sight angles ranging from 60 to 132 degrees measured with respect to flow heading.
C1 [Nahrstedt, D.; Hsia, Y-C] Boeing, Directed Energy Syst, Canoga Pk, CA 91304 USA.
[Jumper, E.; Gordeyev, S.] Univ Notre Dame, Dept Aerosp & Mech Engn, South Bend, IN USA.
[Ceniceros, J.] Boeing SVS, Albuquerque, NM USA.
[Weaver, L.] USAF, Res Lab, AFRL DE, Kirtland AFB, NM USA.
[DeSandre, L.] USN, Res Off, Arlington, VA USA.
[McLaughlin, T.] USAF Acad, Colorado Springs, CO 80840 USA.
RP Nahrstedt, D (reprint author), Boeing, Directed Energy Syst, 8531 Fallbrook Ave,MS 033-WB53, Canoga Pk, CA 91304 USA.
EM david.a.nahrstedt@boeing.com
RI Gordeyev, Stanislav/A-7062-2013; Jumper, Eric/A-9856-2013
NR 3
TC 2
Z9 2
U1 6
U2 13
PU PROFESSIONAL ENGINEERING PUBLISHING LTD
PI WESTMINISTER
PA 1 BIRDCAGE WALK, WESTMINISTER SW1H 9JJ, ENGLAND
SN 0954-4100
J9 P I MECH ENG G-J AER
JI Proc. Inst. Mech. Eng. Part G-J. Aerosp. Eng.
PD JUN
PY 2009
VL 223
IS G4
BP 393
EP 406
DI 10.1243/09544100JAERO385
PG 14
WC Engineering, Aerospace; Engineering, Mechanical
SC Engineering
GA 467FL
UT WOS:000267723300008
ER
PT J
AU Voros, SD
AF Voros, Sharon D.
TI The Serpent and the Rose: The Immaculate Conception and Hispanic Poetry
in the Late Medieval Period
SO RENAISSANCE QUARTERLY
LA English
DT Book Review
C1 [Voros, Sharon D.] USN Acad, Annapolis, MD 21402 USA.
RP Voros, SD (reprint author), USN Acad, Annapolis, MD 21402 USA.
NR 1
TC 0
Z9 0
U1 0
U2 0
PU UNIV CHICAGO PRESS
PI CHICAGO
PA 1427 E 60TH ST, CHICAGO, IL 60637-2954 USA
SN 0034-4338
EI 1935-0236
J9 RENAISSANCE QUART
JI Renaiss. Q.
PD SUM
PY 2009
VL 62
IS 2
BP 493
EP 494
PG 2
WC Medieval & Renaissance Studies
SC Arts & Humanities - Other Topics
GA 437EN
UT WOS:000265469300014
ER
PT J
AU Knipling, KE
Fonda, RW
AF Knipling, K. E.
Fonda, R. W.
TI Texture development in the stir zone of near-alpha titanium friction
stir welds
SO SCRIPTA MATERIALIA
LA English
DT Article
DE Friction stir welding; Titanium alloys; Texture; Electron backscattering
diffraction (EBSD)
ID CHANNEL ANGULAR EXTRUSION; STRENGTH ALUMINUM-ALLOYS; MICROSTRUCTURAL
EVOLUTION; GRAIN-STRUCTURE; STAINLESS-STEEL; AXIAL STRESSES;
RECRYSTALLIZATION; IRON; FCC; BCC
AB Shear textures in the stir zone of a near-a-titanium friction stir weld were examined by electron backscatter diffraction. The texture matches that of a D(2)((1) over bar(1) over bar2)[111] bcc simple shear texture that was transformed to hcp according to the Burgers orientation relationship, ;which aligns {101}(bcc) with {0001}(hcp), although there is also evidence of a P(1) hcp shear texture component. Deformation therefore occurred predominantly above the beta transus, and the alpha texture was inherited from a simple shear texture of the beta phase. Published by Elsevier Ltd. on behalf of Acta Materialia Inc.
C1 [Knipling, K. E.; Fonda, R. W.] USN, Res Lab, Washington, DC 20375 USA.
RP Knipling, KE (reprint author), USN, Res Lab, Code 6356,4555 Overlook Ave SW, Washington, DC 20375 USA.
EM knipling@anvil.nrl.navy.mil
FU Office of Naval Research
FX This research is supported by the Office of Naval Research. The authors
would also like to acknowledge Mr. K. Klug (Concurrent Technologies
Corporation) and Mr. E. Czyryca (Naval Surface Warfare Center, Carderock
Division) for supplying the plate used in this study and Prof. A.
Rollett (Carnegie Mellon University) for helpful discussions. In
addition, we thank Mr. L. Levenberry for his assistance with preparing
the samples and Dr. D. Rowenhorst for his assistance with the EBSD.
NR 31
TC 32
Z9 33
U1 3
U2 17
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 JUN
PY 2009
VL 60
IS 12
BP 1097
EP 1100
DI 10.1016/j.scriptamat.2009.02.050
PG 4
WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary;
Metallurgy & Metallurgical Engineering
SC Science & Technology - Other Topics; Materials Science; Metallurgy &
Metallurgical Engineering
GA 442AV
UT WOS:000265813000014
ER
PT J
AU Arkes, J
AF Arkes, Jeremy
TI How the economy affects teenage weight
SO SOCIAL SCIENCE & MEDICINE
LA English
DT Article
DE Teenage; Adolescent; Weight gain; Body-mass-index; Overweight; Obese;
Underweight; USA; Economy
ID OVERWEIGHT CHILDREN; FOOD-CONSUMPTION; DIET COSTS; OBESITY; CHILDHOOD;
HEALTH; CONSEQUENCES; ADOLESCENTS; ADULTHOOD; FATNESS
AB Much research has focused on the proximate determinants of weight gain and obesity for adolescents, but not much information has emerged on identifying which adolescents might be at risk or on prevention. This research focuses on a distal determinant of teenage weight gain, namely changes in the economy, which may help identify geographical areas where adolescents may be at risk and may provide insights into the mechanisms by which adolescents gain weight. This Study uses a nationally representative sample of individuals, between 15 and 18 years old from the 1997 US National Longitudinal Survey of Youth, to estimate a model with state and year fixed effects to examine how within-state changes in the unemployment rate affect four teenage weight outcomes: an age- and gender-standardized percentile in the body-mass-index distribution and indicators for being overweight, obese, and underweight. I found statistically significant estimates, indicating that females gain weight in weaker economic periods and males gain weight in stronger economic periods. Possible causes for the contrasting results across gender include, among other things, differences in the responsiveness of labor market work to the economy and differences in the types of jobs generally occupied by female and male teenagers. Published by Elsevier Ltd.
C1 USN, Postgrad Sch, Grad Sch Business & Publ Policy, Monterey, CA 93943 USA.
RP Arkes, J (reprint author), USN, Postgrad Sch, Grad Sch Business & Publ Policy, 555 Dyer Rd, Monterey, CA 93943 USA.
EM arkes@nps.edu
NR 38
TC 9
Z9 9
U1 1
U2 7
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0277-9536
J9 SOC SCI MED
JI Soc. Sci. Med.
PD JUN
PY 2009
VL 68
IS 11
BP 1943
EP 1947
DI 10.1016/j.socscimed.2009.03.021
PG 5
WC Public, Environmental & Occupational Health; Social Sciences, Biomedical
SC Public, Environmental & Occupational Health; Biomedical Social Sciences
GA 460PV
UT WOS:000267200500006
PM 19364624
ER
PT J
AU Dew, N
Sarasathy, S
Read, S
Wiltbank, R
AF Dew, Nicholas
Sarasathy, Saras
Read, Stuart
Wiltbank, Robert
TI AFFORDABLE LOSS: BEHAVIORAL ECONOMIC ASPECTS OF THE PLUNGE DECISION
SO STRATEGIC ENTREPRENEURSHIP JOURNAL
LA English
DT Article
DE affordable loss; entrepreneurship; behavioral economics; effectuation
ID REAL OPTIONS; DOWNSIDE RISK; SELF-EMPLOYMENT; ENTREPRENEURSHIP; ENTRY;
OVERCONFIDENCE; CONSTRUCTION; RATIONALITY; CONSTRAINTS; COMPETITION
AB Affordable loss involves decision makers estimating what they might be able to put at risk and determining what they are willing to lose in order to,follow a course of action. Using the entrepreneur's new venture plunge decision, this article combines insights from behavioral economics to develop a detailed analysis of the affordable loss heuristic. Specifically, we develop propositions to explain how individuals: (1) decide what they can afford to lose; and (2) what they are willing to lose in order to plunge into entrepreneurship. The article also discusses the implications of affordable loss for the economics of strategic entrepreneurship. Copyright (C) 2009 Strategic Management Society.
C1 [Wiltbank, Robert] Willamette Univ, Atkinson Grad Sch Management, Salem, OR 97301 USA.
[Dew, Nicholas] USN, Postgrad Sch, Monterey, CA USA.
[Sarasathy, Saras] Univ Virginia, Darden Grad Sch Business Adm, Charlottesville, VA USA.
[Read, Stuart] IMD, Lausanne, Switzerland.
RP Wiltbank, R (reprint author), Willamette Univ, Atkinson Grad Sch Management, Salem, OR 97301 USA.
EM Wiltbank@Willamette.edu
NR 101
TC 29
Z9 29
U1 3
U2 43
PU JOHN WILEY & SONS LTD
PI CHICHESTER
PA THE ATRIUM, SOUTHERN GATE, CHICHESTER PO19 8SQ, W SUSSEX, ENGLAND
SN 1932-4391
J9 STRATEG ENTREP J
JI Strateg. Entrep. J.
PD JUN
PY 2009
VL 3
IS 2
BP 105
EP 126
DI 10.1002/sej.66
PG 22
WC Business; Management
SC Business & Economics
GA 649WM
UT WOS:000281806000001
ER
PT J
AU Yu, HY
Cooper, KP
AF Yu, H. Y.
Cooper, K. P.
TI Dynamic penny-shaped cracks in multilayer sandwich composites
SO THEORETICAL AND APPLIED FRACTURE MECHANICS
LA English
DT Article
DE Penny-shaped cracks; Sandwich composites; Multilayered solids; Mode I
cracks; Time-harmonic loadings; Point forces
ID DISLOCATION-LIKE MODEL; IMPERFECT INTERFACES; LOAD-TRANSFER; SCATTERING;
DIFFRACTION; INCLUSION; EQUATIONS; SURFACE; SOLIDS; WAVES
AB A point force method is proposed for obtaining the dynamic elastic response of a multilayer sandwich composite in the presence of a penny-shaped crack under a harmonic loading. The sandwich composite is a multilayered solid whose lower half is the mirror image of the upper half with the center plane as the mirror. The crack is lying on the mirror plane of the composite. The solution of the mode I dynamic crack problem is formulated by integrating the Green's function of a time-harmonic surface normal point force over the crack surface with an unknown point force distribution. The dual integral equations of the unknown point force distribution are established by considering the boundary conditions, which can be reduced to a Fredholm integral equation of the second kind. A complete solution of the crack problem under consideration can be obtained by solving this Fredholm integral equation. It will be shown that the results obtained by this approach are the same as some existing solutions. Published by Elsevier Ltd.
C1 [Yu, H. Y.; Cooper, K. P.] USN, Res Lab, Washington, DC 20375 USA.
RP Yu, HY (reprint author), USN, Res Lab, Washington, DC 20375 USA.
EM sean.yu@nrl.navy.mil
NR 44
TC 1
Z9 1
U1 0
U2 3
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0167-8442
J9 THEOR APPL FRACT MEC
JI Theor. Appl. Fract. Mech.
PD JUN
PY 2009
VL 51
IS 3
BP 181
EP 188
DI 10.1016/j.tafmec.2009.05.003
PG 8
WC Engineering, Mechanical; Mechanics
SC Engineering; Mechanics
GA 475TO
UT WOS:000268384200005
ER
PT J
AU Bahar, M
AF Bahar, Michael
TI POWER THROUGH CLARITY: HOW CLARIFYING THE OLD STATE-BASED LAWS CAN
REVEAL THE STRATEGIC POWER OF LAW
SO UNIVERSITY OF PENNSYLVANIA JOURNAL OF INTERNATIONAL LAW
LA English
DT Article
C1 [Bahar, Michael] USN, JAG Corp, Stennis Space Ctr, MS 39529 USA.
[Bahar, Michael] NYU, Wilf Family Dept Polit, New York, NY 10003 USA.
RP Bahar, M (reprint author), USN, JAG Corp, Stennis Space Ctr, MS 39529 USA.
NR 24
TC 1
Z9 1
U1 0
U2 0
PU UNIV PENN LAW SCH
PI PHILADELPHIA
PA 3400 CHESTNUT ST, PHILADELPHIA, PA 19104-6204 USA
SN 1086-7872
J9 UNIV PA J INT LAW
JI Univ. Pa. J. Int. Law
PD SUM
PY 2009
VL 30
IS 4
BP 1295
EP 1322
PG 28
WC Law
SC Government & Law
GA 457QD
UT WOS:000266946200016
ER
PT J
AU Stine, R
Aifer, EH
Whitman, LJ
Petrovykh, DY
AF Stine, R.
Aifer, E. H.
Whitman, L. J.
Petrovykh, D. Y.
TI Passivation of GaSb and InAs by pH-activated thioacetamide
SO APPLIED SURFACE SCIENCE
LA English
DT Article
DE X-ray photoelectron spectroscopy; Gallium antimonide; Indium arsenide;
Thioacetamide; Passivation; Oxidation
ID SURFACE PASSIVATION; INFRARED PHOTODETECTORS; INAS(001) SURFACES; SULFUR
PASSIVATION; GAAS SURFACE; DETECTORS; ACCUMULATION; TEMPERATURE; BAND
AB We describe the passivation by thioacetamide (TAM) of GaSb and InAs-two III-V semiconductor materials important for fabricating IR devices from Type-II superlattices (T2SLs). We use X-ray photoelectron spectroscopy (XPS) to characterize GaSb and InAs (001) surfaces treated by TAM under both acidic and basic conditions and to analyze the reoxidation of passivated surfaces over time. Both acid-and base-activated TAM treatments produce sulfide layers on GaSb and InAs. The layers produced by base-TAM appear to be of self-limited thickness < 1 nm, whereas acid-TAM creates considerably thicker (1-2 nm) sulfide layers. Passivation by both acid-and base-activated TAM offers significant short-term (< 1 day) protection against reoxidation, but does not prevent oxide formation after exposure to ambient air for 1-3 days. Based on this comparative study and previous literature reports, the chemical effects of TAM treatments on Ga, Sb, In, and As depend not only on the individual element and reaction conditions, but also on the compound. In other words, our results suggest that passivation chemistry for a common element in two different III-V materials should not, in general, be assumed to be the same. (C) 2009 Elsevier B. V. All rights reserved.
C1 [Stine, R.; Aifer, E. H.; Whitman, L. J.; Petrovykh, D. Y.] USN, Res Lab, Washington, DC 20375 USA.
[Petrovykh, D. Y.] Univ Maryland, Dept Phys, College Pk, MD 20742 USA.
RP Petrovykh, DY (reprint author), USN, Res Lab, Washington, DC 20375 USA.
EM dmitri.petrovykh@nrl.navy.mil
RI Petrovykh, Dmitri/A-3432-2008; Whitman, Lloyd/G-9320-2011; Stine,
Rory/C-6709-2013
OI Petrovykh, Dmitri/0000-0001-9089-4076; Whitman,
Lloyd/0000-0002-3117-1174;
FU ASEE Postdoctoral Research Associateship; Office of Naval Research; Air
Force Office of Scientific Research
FX The authors thank Drs. Brian Bennett and Chadwick Canedy (NRL) for
growing the InAs and GaSb samples. D. Y. P. and R. S. thank Dr. Thomas
Clark (NRL) for helpful discussions on the chemical properties of
thioacetamide. R. S. acknowledges the support of an ASEE Postdoctoral
Research Associateship. This work was funded by the Office of Naval
Research and the Air Force Office of Scientific Research.
NR 31
TC 18
Z9 18
U1 3
U2 22
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0169-4332
J9 APPL SURF SCI
JI Appl. Surf. Sci.
PD MAY 30
PY 2009
VL 255
IS 16
BP 7121
EP 7125
DI 10.1016/j.apsusc.2009.03.010
PG 5
WC Chemistry, Physical; Materials Science, Coatings & Films; Physics,
Applied; Physics, Condensed Matter
SC Chemistry; Materials Science; Physics
GA 446CI
UT WOS:000266097500003
ER
PT J
AU Harms, MJ
Castaneda, CA
Schlessman, JL
Sue, GR
Isom, DG
Cannon, BR
Garcia-Moreno, B
AF Harms, Michael J.
Castaneda, Carlos A.
Schlessman, Jamie L.
Sue, Gloria R.
Isom, Daniel G.
Cannon, Brian R.
Garcia-Moreno E, Bertrand
TI The pK(a) Values of Acidic and Basic Residues Buried at the Same
Internal Location in a Protein Are Governed by Different Factors
SO JOURNAL OF MOLECULAR BIOLOGY
LA English
DT Article
DE pK(a) values; internal ionizable groups; structure/function; energy
calculations; electrostatics
ID RANGE ELECTROSTATIC INTERACTIONS; ESCHERICHIA-COLI THIOREDOXIN; ENZYME
ACTIVE-SITES; STAPHYLOCOCCAL NUCLEASE; CONFORMATIONAL FLEXIBILITY;
IONIZABLE GROUPS; SALT BRIDGES; CONTINUUM ELECTROSTATICS; COULOMBIC
INTERACTIONS; DIELECTRIC-CONSTANTS
AB The pK(a) values of internal ionizable groups are usually very different from the normal pK(a) values of ionizable groups in water. To examine the molecular determinants of pK(a) values of internal groups, we compared the properties of Lys, Asp, and Glu at internal position 38 in staphylococcal nuclease. Lys38 titrates with a normal or elevated pK(a), whereas Asp38 and Glu38 titrate with elevated pK(a) values of 7.0 and 7.2, respectively. In the structure of the L38K variant, the buried amino group of the Lys38 side chain makes an ion pair with Glu122, whereas in the structure of the L38E variant, the buried carboxyl group of Glu38 interacts with two backbone amides and has several nearby carboxyl oxygen atoms. Previously, we showed that the pK(a) of Lys38 is normal owing to structural reorganization and water penetration concomitant with ionization of the Lys side chain. In contrast, the pK(a) values of Asp38 and Glu38 are perturbed significantly owing to an imbalance between favorable polar interactions and unfavorable contributions from dehydration and from Coulomb interactions with surface carboxylic groups. Their ionization is also coupled to subtle structural reorganization. These results illustrate the complex interplay between local polarity, Coulomb interactions, and structural reorganization as determinants of pK(a) values of internal groups in proteins. This study suggests that improvements to computational methods for pK(a) calculations will require explicit treatment of the conformational reorganization that can occur when internal groups ionize. (C) 2009 Elsevier Ltd. All rights reserved.
C1 [Harms, Michael J.; Castaneda, Carlos A.; Schlessman, Jamie L.; Sue, Gloria R.; Isom, Daniel G.; Cannon, Brian R.; Garcia-Moreno E, Bertrand] Johns Hopkins Univ, Dept Biophys, Baltimore, MD 21218 USA.
[Schlessman, Jamie L.] USN Acad, Dept Chem, Annapolis, MD 21402 USA.
RP Garcia-Moreno, B (reprint author), Johns Hopkins Univ, Dept Biophys, 3400 N Charles St, Baltimore, MD 21218 USA.
EM bertrand@jhu.edu
OI Harms, Michael/0000-0002-0241-4122
FU National Institutes of Health [GM-065197]; National Science Foundation
FX We gratefully acknowledge Dr. Ananya Majumdar for assistance with NMR
experiments and for the use of the Johns Hopkins University Biomolecular
NMR Facility. This work was supported by National Institutes of Health
grant GM-065197 (B. G.-M.E) and a graduate research fellowship from the
National Science Foundation (M.J.H.).
NR 79
TC 55
Z9 55
U1 0
U2 24
PU ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
PI LONDON
PA 24-28 OVAL RD, LONDON NW1 7DX, ENGLAND
SN 0022-2836
J9 J MOL BIOL
JI J. Mol. Biol.
PD MAY 29
PY 2009
VL 389
IS 1
BP 34
EP 47
DI 10.1016/j.jmb.2009.03.039
PG 14
WC Biochemistry & Molecular Biology
SC Biochemistry & Molecular Biology
GA 457LR
UT WOS:000266930500004
PM 19324049
ER
PT J
AU Burke, AM
Akis, R
Day, T
Speyer, G
Ferry, DK
Bennett, BR
AF Burke, A. M.
Akis, R.
Day, T.
Speyer, G.
Ferry, D. K.
Bennett, B. R.
TI Imaging scarred states in quantum dots
SO JOURNAL OF PHYSICS-CONDENSED MATTER
LA English
DT Article
ID COHERENT ELECTRON FLOW; GATE MICROSCOPY; FLUCTUATIONS; EINSELECTION
AB We have used the scanning gate microscopy technique to image scar structures in an open quantum dot, fabricated in an InAs quantum well and defined by electron beam lithography. These are shown to have a periodicity in magnetic field that correlates with that found in the conductance fluctuations. Simulations have shown that these magnetic transform images bear a strong resemblance to actual scars found in the dots.
C1 [Burke, A. M.; Akis, R.; Day, T.; Speyer, G.; Ferry, D. K.] Arizona State Univ, Dept Elect Engn, Tempe, AZ 85287 USA.
[Burke, A. M.; Akis, R.; Day, T.; Speyer, G.; Ferry, D. K.] Arizona State Univ, Ctr Solid State Elect Res, Tempe, AZ 85287 USA.
[Ferry, D. K.] Arizona State Univ, Dept Phys, Tempe, AZ 85287 USA.
[Bennett, B. R.] USN, Res Lab, Washington, DC 20375 USA.
RP Burke, AM (reprint author), Arizona State Univ, Dept Elect Engn, Tempe, AZ 85287 USA.
RI Bennett, Brian/A-8850-2008;
OI Bennett, Brian/0000-0002-2437-4213; Akis, Richard/0000-0002-4366-1891
FU Arizona State University's GPSA Graduate Research Support Program;
Applied Materials doctoral fellowship
FX This work was supported in part by the Office of Naval Research and a
grant from Arizona State University's GPSA Graduate Research Support
Program. AMB is supported by an Applied Materials doctoral fellowship.
The authors would like to extend special thanks to G M Jones and J B
Boos for technical discussions regarding material processing, N Aoki for
discussions related to SGM measurements, and to C Tracy, L Cooper, and S
M Goodnick for helpful discussions throughout this study in its
entirety.
NR 28
TC 7
Z9 7
U1 0
U2 3
PU IOP PUBLISHING LTD
PI BRISTOL
PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND
SN 0953-8984
J9 J PHYS-CONDENS MAT
JI J. Phys.-Condes. Matter
PD MAY 27
PY 2009
VL 21
IS 21
AR 212201
DI 10.1088/0953-8984/21/21/212201
PG 5
WC Physics, Condensed Matter
SC Physics
GA 439WN
UT WOS:000265658400001
PM 21825542
ER
PT J
AU Meulenberg, RW
Lee, JRI
McCall, SK
Hanif, KM
Haskel, D
Lang, JC
Terminello, LJ
van Buuren, T
AF Meulenberg, Robert W.
Lee, Jonathan R. I.
McCall, Scott K.
Hanif, Khalid M.
Haskel, Daniel
Lang, Jonathan C.
Terminello, Louis J.
van Buuren, Tony
TI Evidence for Ligand-Induced Paramagnetism in CdSe Quantum Dots
SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Article
ID CAPPED CDSE; NANOCRYSTALS; SURFACE; SEMICONDUCTORS; FERROMAGNETISM;
SPECTROSCOPY
AB We report evidence that paramagnetism in CdSe QDs can be induced via manipulation of the surface chemistry. Using SQUID magnetometry and X-ray absorption spectroscopy, we demonstrate that the paramagnetic behavior of the CdSe QDs can be varied by changing the ligand end-group functionality of the passivating layer. Contrary to previous reports, no evidence for ferromagnetism was observed. The results suggest that the paramagnetism is induced via pi back-bonding between Cd 4d orbtials and ligands with empty pi* orbitals.
C1 [Hanif, Khalid M.] USN, Res Lab, Washington, DC 20375 USA.
[Haskel, Daniel; Lang, Jonathan C.] Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA.
[Meulenberg, Robert W.; Lee, Jonathan R. I.; McCall, Scott K.; Terminello, Louis J.; van Buuren, Tony] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
RP Meulenberg, RW (reprint author), Univ Maine, Dept Phys & Astron, Surface Sci & Technol Lab, Orono, ME 04469 USA.
EM robert.meulenberg@maine.edu; lee204@llnl.gov
RI McCall, Scott/G-1733-2014;
OI McCall, Scott/0000-0002-7979-4944; Meulenberg,
Robert/0000-0003-2696-8792
FU LDRD [07-LW-041]; U.S. DOE, Office of Science [DE-AC52-07NA27344,
DE-AC02-05CH11231, DE-AC02-06CH11357]
FX Project 07-LW-041 was funded by the LDRD Program at LLNL. This work was
partially supported by the OBES, DMR, under the auspices of the U.S. DOE
by LLNL under Contract DE-AC52-07NA27344. Use of the ALS and APS was
supported by the U.S. DOE, Office of Science, OBES. under Contracts
DE-AC02-05CH11231 and DE-AC02-06CH11357, respectively.
NR 18
TC 33
Z9 33
U1 2
U2 23
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 27
PY 2009
VL 131
IS 20
BP 6888
EP +
DI 10.1021/ja8098454
PG 4
WC Chemistry, Multidisciplinary
SC Chemistry
GA 451QM
UT WOS:000266484700001
PM 19415891
ER
PT J
AU Kennedy, RB
Ovsyannikova, IG
Pankratz, VS
Vierkant, RA
Jacobson, RM
Ryan, MAK
Poland, GA
AF Kennedy, Richard B.
Ovsyannikova, Inna G.
Pankratz, V. Shane
Vierkant, Robert A.
Jacobson, Robert M.
Ryan, Margaret A. K.
Poland, Gregory A.
TI Gender effects on humoral immune responses to smallpox vaccine
SO VACCINE
LA English
DT Article; Proceedings Paper
CT 6th World Congress on Vaccines, Immunisation and Immunotherapy
CY SEP 23-25, 2008
CL Milan, ITALY
DE Smallpox vaccine; Vaccinia; Neutralizing antibody; Vaccine response
ID POXVIRUS INFECTION; GENE POLYMORPHISMS; ETHNIC-DIFFERENCES; CELL MEMORY;
ANTIBODY; RUBELLA; MEASLES; MUMPS; VIRUS; ASSOCIATIONS
AB There are no data currently available on gender and racial variation in smallpox vaccine immune responses. We recruited 1076 healthy adults 18-40 years old who received one dose of the US-licensed smallpox vaccine (Dryvax (R)). Vaccinia neutralizing antibody titers in each Subject's serum were determined using a high throughput neutralization assay based on a recombinant, beta-gal expressing vaccinia virus. Results are reported as the serum dilution inhibiting 50% of virus activity (ID(50)). The median ID(50) for all subjects was 132.2 (inter-quartile range (IQR) = 78.8, 205.6). While no significant differences were observed with race and ethnicity, females had significantly higher neutralizing antibody titers than males (158.5 [93.2, 255.8] vs. 124.1 [75.2, 185.9]; p < 0.0001). As expected, time since vaccination was also associated with variations in neutralizing antibody titers in Our subjects. These data indicate that neutralizing antibody titers following primary smallpox vaccination Vary by gender. (C) 2009 Elsevier Ltd. All rights reserved.
C1 [Kennedy, Richard B.; Ovsyannikova, Inna G.; Jacobson, Robert M.; Poland, Gregory A.] Mayo Clin, Mayo Vaccine Res Grp, Rochester, MN 55905 USA.
[Pankratz, V. Shane; Vierkant, Robert A.] Mayo Clin, Div Biostat, Rochester, MN 55905 USA.
[Kennedy, Richard B.; Ovsyannikova, Inna G.; Poland, Gregory A.] Mayo Clin, Program Translat Immunovirol & Biodef, Rochester, MN 55905 USA.
[Jacobson, Robert M.] Mayo Clin, Dept Pediat & Adolescent Med, Rochester, MN 55905 USA.
[Ryan, Margaret A. K.] USN, Hlth Res Ctr, San Diego, CA 92152 USA.
RP Poland, GA (reprint author), Mayo Clin, Mayo Vaccine Res Grp, Guggenheim 611C,200 1st St SW, Rochester, MN 55905 USA.
EM Poland.gregory@mayo.edu
OI Vierkant, Robert/0000-0001-6242-5221; Jacobson,
Robert/0000-0002-6355-8752
FU NCRR NIH HHS [1 UL1 RR024150-01, UL1 RR024150, UL1 RR024150-01]; NIAID
NIH HHS [N01 AI040065, N01AI40065]
NR 33
TC 33
Z9 33
U1 0
U2 4
PU ELSEVIER SCI LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
SN 0264-410X
J9 VACCINE
JI Vaccine
PD MAY 26
PY 2009
VL 27
IS 25-26
BP 3319
EP 3323
DI 10.1016/j.vaccine.2009.01.086
PG 5
WC Immunology; Medicine, Research & Experimental
SC Immunology; Research & Experimental Medicine
GA 457QT
UT WOS:000266947900016
PM 19200827
ER
PT J
AU Wilkes, ZW
Varma, S
Chen, YH
Milchberg, HM
Jones, TG
Ting, A
AF Wilkes, Z. W.
Varma, S.
Chen, Y. -H.
Milchberg, H. M.
Jones, T. G.
Ting, A.
TI Direct measurements of the nonlinear index of refraction of water at 815
and 407 nm using single-shot supercontinuum spectral interferometry
SO APPLIED PHYSICS LETTERS
LA English
DT Article
DE high-speed optical techniques; light interferometry; optical Kerr
effect; optical pulse compression; refractive index; underwater optics
ID LASER; AIR; BREAKDOWN; PULSES; PLASMA; GASES; PHASE
AB Single-shot supercontinuum spectral interferometry was used to measure the nonlinear index of refraction due to the optical Kerr effect in water at both 815 and 407 nm, with pump pulse lengths of similar to 90 and similar to 250 fs, respectively. Knowledge of the nonlinear index at 407 nm allows pulse tailoring to achieve remote underwater pulse compression and self-focusing.
C1 [Wilkes, Z. W.; Varma, S.; Chen, Y. -H.; Milchberg, H. M.] Univ Maryland, Inst Res Elect & Appl Phys, College Pk, MD 20742 USA.
[Jones, T. G.; Ting, A.] USN, Res Lab, Div Plasma Phys, Washington, DC 20375 USA.
RP Wilkes, ZW (reprint author), Univ Maryland, Inst Res Elect & Appl Phys, College Pk, MD 20742 USA.
EM ted.jones@nrl.navy.mil
RI Chen, Yu-hsin/I-3400-2012
OI Chen, Yu-hsin/0000-0002-9603-7371
FU Office of Naval Research
FX This work was funded by the Office of Naval Research.
NR 20
TC 18
Z9 18
U1 0
U2 6
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 MAY 25
PY 2009
VL 94
IS 21
AR 211102
DI 10.1063/1.3142384
PG 3
WC Physics, Applied
SC Physics
GA 451WA
UT WOS:000266500400002
ER
PT J
AU Devgan, PS
Diehl, JF
Urick, VJ
Sunderman, CE
Williams, KJ
AF Devgan, Preetpaul S.
Diehl, John F.
Urick, Vincent J.
Sunderman, Christopher E.
Williams, Keith J.
TI Even-order harmonic cancellation for off-quadrature biased Mach-Zehnder
modulator with improved RF metrics using dual wavelength inputs and dual
outputs
SO OPTICS EXPRESS
LA English
DT Article
ID LINKS; OPTIMIZATION
AB We present a technique using a dual-output Mach-Zehnder modulator (MZM) with two wavelength inputs, one operating at low-bias and the other operating at high-bias, in order to cancel unwanted even-order harmonics in analog optical links. By using a dual-output MZM, this technique allows for two suppressed optical carriers to be transmitted to the receiver. Combined with optical amplification and balanced differential detection, the RF power of the fundamental is increased by 2 dB while the even-order harmonic is reduced by 47 dB, simultaneously. The RF noise figure and third-order spurious-free dynamic range (SFDR3) are improved by 5.4 dB and 3.6 dB, respectively. Using a wavelength sensitive, low V-pi MZM allows the two wavelengths to be within 5.5 nm of each other for a frequency band from 10 MHz to 100 MHz and 10 nm for 1 GHz. (C) 2009 Optical Society of America
C1 [Devgan, Preetpaul S.; Diehl, John F.; Urick, Vincent J.; Williams, Keith J.] USN, Res Lab, Washington, DC 20375 USA.
[Sunderman, Christopher E.] Global Strategies Grp N Amer, Crofton, MD 21114 USA.
RP Devgan, PS (reprint author), USN, Res Lab, 4555 Overlook Ave SW, Washington, DC 20375 USA.
EM pdevgan@ccs.nrl.navy.mil
NR 14
TC 14
Z9 14
U1 0
U2 3
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 MAY 25
PY 2009
VL 17
IS 11
BP 9028
EP 9039
DI 10.1364/OE.17.009028
PG 12
WC Optics
SC Optics
GA 450DW
UT WOS:000266382200035
PM 19466152
ER
PT J
AU Huba, JD
Krall, J
Joyce, G
AF Huba, J. D.
Krall, J.
Joyce, G.
TI Atomic and molecular ion dynamics during equatorial spread F
SO GEOPHYSICAL RESEARCH LETTERS
LA English
DT Article
ID IONOSPHERE; BUBBLES; IRREGULARITIES
AB The first simulation study of atomic and molecular ion dynamics during equatorial spread F (ESF) is presented. The simulation results are based on the Naval Research Laboratory (NRL) SAMI3/ESF three-dimensional code. The key findings are the following: (1) a 'super fountain' effect can occur in the initial stage of ESF with upward ion velocities similar to 1 km/s, (2) plasma depletions can be enhanced by the 'drainage' of H(+) ions along the geomagnetic field, and (3) molecular ions (e. g., NO(+)) can be 'lifted' to high altitudes (greater than or similar to 400 km). We compare these results with satellite observations where applicable. Citation: Huba, J. D., J. Krall, and G. Joyce (2009), Atomic and molecular ion dynamics during equatorial spread F, Geophys. Res. Lett., 36, L10106, doi:10.1029/2009GL037675.
C1 [Huba, J. D.; Krall, J.] USN, Res Lab, Div Plasma Phys, Washington, DC 20375 USA.
[Joyce, G.] Icarus Res Inc, Bethesda, MD 20814 USA.
RP Huba, JD (reprint author), USN, Res Lab, Div Plasma Phys, Code 6790, Washington, DC 20375 USA.
EM huba@ppd.nrl.navy.mil
FU NASA; ONR
FX We thank Joel Fedder for a critical reading of the manuscript. This
research has been supported by NASA and ONR.
NR 19
TC 20
Z9 20
U1 0
U2 3
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 0094-8276
J9 GEOPHYS RES LETT
JI Geophys. Res. Lett.
PD MAY 23
PY 2009
VL 36
AR L10106
DI 10.1029/2009GL037675
PG 6
WC Geosciences, Multidisciplinary
SC Geology
GA 449XE
UT WOS:000266363300004
ER
PT J
AU Krall, J
Huba, JD
Martinis, CR
AF Krall, J.
Huba, J. D.
Martinis, C. R.
TI Three-dimensional modeling of equatorial spread F airglow enhancements
SO GEOPHYSICAL RESEARCH LETTERS
LA English
DT Article
ID IONOSPHERE; BUBBLES
AB A sequence of 630.0 nm images obtained with the Boston University all-sky imaging system at Arecibo (18.3 N, 66.7 W, 28 N mag) shows equatorial spread F (ESF) airglow depletions evolving into ESF airglow enhancements. Using a combination of a meridional wind and a converging zonal wind, the NRL ionosphere model SAMI3/ESF can reproduce ESF airglow enhancements. Citation: Krall, J., J. D. Huba, and C. R. Martinis (2009), Three-dimensional modeling of equatorial spread F airglow enhancements, Geophys. Res. Lett., 36, L10103, doi: 10.1029/2009GL038441.
C1 [Krall, J.] USN, Res Lab, Div Plasma Phys, Washington, DC 20375 USA.
[Huba, J. D.; Martinis, C. R.] Boston Univ, Ctr Space Phys, Boston, MA 02215 USA.
RP Krall, J (reprint author), USN, Res Lab, Div Plasma Phys, Code 6790,4555 Overlook Ave SW, Washington, DC 20375 USA.
EM jonathan.krall@nrl.navy.mil
FU Office of Naval Research; NASA
FX This work was supported by the Office of Naval Research and NASA. We
thank Joel Fedder for a critical reading of the manuscript.
NR 18
TC 20
Z9 20
U1 0
U2 3
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 0094-8276
J9 GEOPHYS RES LETT
JI Geophys. Res. Lett.
PD MAY 22
PY 2009
VL 36
AR L10103
DI 10.1029/2009GL038441
PG 4
WC Geosciences, Multidisciplinary
SC Geology
GA 449XD
UT WOS:000266363200006
ER
PT J
AU Amerault, C
Zou, XL
Doyle, J
AF Amerault, Clark
Zou, Xiaolei
Doyle, James
TI Assimilation of rain-affected radiances with an adjoint mesoscale model
SO JOURNAL OF APPLIED REMOTE SENSING
LA English
DT Article
DE precipitation; microwave radiation; assimilation; adjoint
ID AFFECTED MICROWAVE RADIANCES; CLOUD MODEL; MICROPHYSICAL RETRIEVAL;
BRIGHTNESS TEMPERATURES; 1D+4D-VAR ASSIMILATION; CONVECTIVE STORM;
PRECIPITATION; PREDICTION; IMPLEMENTATION; CYCLONES
AB The ability to assimilate microwave radiance observations of the Earth's atmosphere affected by precipitation is investigated with an emphasis on channels that are sensitive to frozen hydrometeors. Mesoscale numerical weather prediction and radiative transfermodels, as well as their corresponding adjoint models are utilized in sensitivity and data assimilation experiments. Special SensorMicrowave/Imager observations of Hurricane Bonnie (1998) are compared with model results that are transferred to radiance space with the radiative transfer model. Sensitivity results indicate that the model error in radiance space in areas of precipitation at the initial time is most dependent on the initial hydrometeor fields. At later forecast times, the model error is more sensitive to initial conventional model variables such as water vapor and temperature. When radiance data is assimilated, the model fields have better agreement with the observations compared to a control experiment for all observed channels at the initial time. However, at the next observation time 12 h later, the quantitative error measurements for the control and post-assimilation forecasts are approximately the same value. Although this study demonstrates the ability to assimilate observations sensitive to atmospheric ice (as well as liquid) concentrations in a variational framework, important aspects such a background error correlation and bias have been ignored for simplification. More observations in a more complex data assimilation system will be needed in order to fully maximize the forecast impact of these observations.
C1 [Amerault, Clark; Doyle, James] USN, Res Lab, Monterey, CA 93943 USA.
[Zou, Xiaolei] Florida State Univ, Dept Meteorol, Tallahassee, FL 32306 USA.
RP Amerault, C (reprint author), USN, Res Lab, 7 Grace Hopper Ave,Stop 2, Monterey, CA 93943 USA.
FU Office of Naval Research (ONR) [N-0014-01-0375, 0601153N]
FX This research was performed while the first author held a National
Research Council Associateship Award at the Naval Research Laboratory
and also while he was a graduate student at Florida State University.
The research completed in graduate school was funded by the Office of
Naval Research (ONR) under the grant N-0014-01-0375. The third author
was supported by ONR Program Element 0601153N. We thank 2 anonymous
reviewers for their comments and suggestions. COAMPS (R) R is a
registered trademark of the Naval Research Laboratory.
NR 37
TC 3
Z9 3
U1 0
U2 6
PU SPIE-SOC PHOTOPTICAL INSTRUMENTATION ENGINEERS
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98225 USA
SN 1931-3195
J9 J APPL REMOTE SENS
JI J. Appl. Remote Sens.
PD MAY 21
PY 2009
VL 3
AR 033531
DI 10.1117/1.3153332
PG 20
WC Environmental Sciences; Remote Sensing; Imaging Science & Photographic
Technology
SC Environmental Sciences & Ecology; Remote Sensing; Imaging Science &
Photographic Technology
GA 520WO
UT WOS:000271880400001
ER
PT J
AU Tamanaha, CR
Malito, MP
Mulvaney, SP
Whitman, LJ
AF Tamanaha, Cy R.
Malito, Michael P.
Mulvaney, Shawn P.
Whitman, Lloyd J.
TI Reusable, compression-sealed fluid cells for surface mounting to planar
substrates
SO LAB ON A CHIP
LA English
DT Article
ID MICROFLUIDIC DEVICES; BIOSENSOR; MATRICES; SYSTEM
AB We have developed a universal structure and mechanism for the repeatable, rapid-attachment of a fluid cell to a planar substrate. The fluid cell and all fluidic connections are completely contained in a plastic body such that attachment requires neither adhesives nor modification of the substrate. The geometry of the fluid cell is defined by the active area of the planar Substrate (e.g. a sensor array). All required components have been quickly prototyped using Computer Numerical Control (CNC) machining. It is also straight-forward to create an array of fluid cells to attach to a single Substrate (e.g. a standard microscope slide). All components are easy to assemble and can be cleaned and reused, making this flexible approach applicable for a wide range of lab-on-a-chip applications.
C1 [Tamanaha, Cy R.; Malito, Michael P.; Mulvaney, Shawn P.; Whitman, Lloyd J.] USN, Res Lab, Washington, DC 20375 USA.
RP Tamanaha, CR (reprint author), USN, Res Lab, Washington, DC 20375 USA.
EM cy.tamanaha@nrl.navy.mil
RI Whitman, Lloyd/G-9320-2011
OI Whitman, Lloyd/0000-0002-3117-1174
FU Office of Naval Research and a Cooperative Research and Development
Agreement with Seahawk Biosystems, Inc. [NCRADA-NRL-04-341]
FX This work was supported by the Office of Naval Research and a
Cooperative Research and Development Agreement with Seahawk Biosystems,
Inc. (NCRADA-NRL-04-341). We are grateful to Dr. Dmitri Petrovykh for
many helpful Suggestions during preparation of this manuscript. Authors
M.P.M. and S.P.M. are employees of Nova Research Inc., 1900 Elkins St.
Suite 230, Alexandria, VA 22308 USA.
NR 20
TC 7
Z9 7
U1 1
U2 2
PU ROYAL SOC CHEMISTRY
PI CAMBRIDGE
PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS,
ENGLAND
SN 1473-0197
J9 LAB CHIP
JI Lab Chip
PD MAY 21
PY 2009
VL 9
IS 10
BP 1468
EP 1471
DI 10.1039/b818960a
PG 4
WC Biochemical Research Methods; Chemistry, Multidisciplinary; Nanoscience
& Nanotechnology
SC Biochemistry & Molecular Biology; Chemistry; Science & Technology -
Other Topics
GA 473RU
UT WOS:000268227400022
PM 19417916
ER
PT J
AU Hasell, D
Akdogan, T
Alarcon, R
Bertozzi, W
Booth, E
Botto, T
Calarco, JR
Clasie, B
Crawford, C
DeGrush, A
Dow, K
Dutta, D
Farkhondeh, M
Fatemi, R
Filoti, O
Franklin, W
Gao, H
Geis, E
Gilad, S
Hersman, W
Holtrop, M
Ihloff, E
Karpius, P
Kelsey, J
Kohl, M
Kolster, H
Krause, S
Lee, T
Maschinot, A
Matthews, J
McIlhany, K
Meitanis, N
Milner, R
Rapaport, J
Redwine, R
Seely, J
Shinozaki, A
Sindile, A
Sirca, S
Smith, T
Sobczynski, S
Tanguay, M
Tonguc, B
Tschalaer, C
Tsentalovich, E
Turchinetz, W
van den Brand, JFJ
van der Laan, J
Wang, F
Wise, T
Xiao, Y
Xu, W
Zhang, C
Zhou, Z
Ziskin, V
Zwart, T
AF Hasell, D.
Akdogan, T.
Alarcon, R.
Bertozzi, W.
Booth, E.
Botto, T.
Calarco, J. R.
Clasie, B.
Crawford, C.
DeGrush, A.
Dow, K.
Dutta, D.
Farkhondeh, M.
Fatemi, R.
Filoti, O.
Franklin, W.
Gao, H.
Geis, E.
Gilad, S.
Hersman, W.
Holtrop, M.
Ihloff, E.
Karpius, P.
Kelsey, J.
Kohl, M.
Kolster, H.
Krause, S.
Lee, T.
Maschinot, A.
Matthews, J.
McIlhany, K.
Meitanis, N.
Milner, R.
Rapaport, J.
Redwine, R.
Seely, J.
Shinozaki, A.
Sindile, A.
Sirca, S.
Smith, T.
Sobczynski, S.
Tanguay, M.
Tonguc, B.
Tschalaer, C.
Tsentalovich, E.
Turchinetz, W.
van den Brand, J. F. J.
van der Laan, J.
Wang, F.
Wise, T.
Xiao, Y.
Xu, W.
Zhang, C.
Zhou, Z.
Ziskin, V.
Zwart, T.
TI The BLAST experiment
SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS
SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
LA English
DT Article
DE BLAST; Storage ring; Polarized target; Polarized beam; Tracking
detector; Cherenkov detector; Scintillator detector
ID ELECTRON-SPIN POLARIZATION; STORAGE-RING; GAS-TARGET; SYSTEM;
PHOTOEMISSION; SPECTROMETER; PERFORMANCE; POLARIMETER; SCATTERING; GAAS
AB The Bates large acceptance spectrometer toroid (BLAST) experiment was operated at the MIT-Bates Linear Accelerator Center from 2003 until 2005. The detector and experimental program were designed to study, in a systematic manner, the spin-dependent electromagnetic interaction in few-nucleon systems. As such the data will provide improved measurements for neutron, proton, and deuteron form factors. The data will also allow details of the reaction mechanism, such as the role of final state interactions, pion production, and resonances to be studied. The experiment used: a longitudinally polarized electron beam stored in the South Hall Storage Ring; a highly polarized, isotopically pure, internal gas target of hydrogen or deuterium provided by an atomic beam source: and a symmetric, general purpose detector based on a toroidal spectrometer with tracking. time-of-flight, Cherenkov, and neutron detectors. Details of the experiment and operation are presented. (C) 2009 Elsevier B.V. All rights reserved.
C1 [Hasell, D.; Akdogan, T.; Bertozzi, W.; Botto, T.; Clasie, B.; Crawford, C.; DeGrush, A.; Dow, K.; Farkhondeh, M.; Fatemi, R.; Franklin, W.; Gilad, S.; Ihloff, E.; Kelsey, J.; Kohl, M.; Kolster, H.; Krause, S.; Maschinot, A.; Matthews, J.; Meitanis, N.; Milner, R.; Redwine, R.; Seely, J.; Shinozaki, A.; Sirca, S.; Sobczynski, S.; Tanguay, M.; Tschalaer, C.; Tsentalovich, E.; Turchinetz, W.; van der Laan, J.; Wang, F.; Xiao, Y.; Zhang, C.; Zhou, Z.; Ziskin, V.; Zwart, T.] MIT, Bates Linear Accelerator Ctr, Middleton, MA 01949 USA.
[Alarcon, R.; Geis, E.; Tonguc, B.] Arizona State Univ, Tempe, AZ 85287 USA.
[Booth, E.] Boston Univ, Boston, MA 02215 USA.
[Smith, T.] Dartmouth Coll, Hanover, NH 03755 USA.
[Dutta, D.; Xu, W.] Duke Univ, Durham, NC 27708 USA.
[Gao, H.] Johannes Gutenberg Univ Mainz, D-55099 Mainz, Germany.
[Hasell, D.; Akdogan, T.; Bertozzi, W.; Botto, T.; Clasie, B.; Crawford, C.; DeGrush, A.; Dow, K.; Farkhondeh, M.; Fatemi, R.; Franklin, W.; Gilad, S.; Ihloff, E.; Kelsey, J.; Kohl, M.; Kolster, H.; Krause, S.; Maschinot, A.; Matthews, J.; Meitanis, N.; Milner, R.; Redwine, R.; Seely, J.; Shinozaki, A.; Sirca, S.; Sobczynski, S.; Tanguay, M.; Tschalaer, C.; Tsentalovich, E.; Turchinetz, W.; van der Laan, J.; Wang, F.; Xiao, Y.; Zhang, C.; Zhou, Z.; Ziskin, V.; Zwart, T.] MIT, Cambridge, MA 02139 USA.
[Rapaport, J.] Ohio Univ, Athens, OH 45701 USA.
[McIlhany, K.] USN Acad, Annapolis, MD 21402 USA.
[Calarco, J. R.; Filoti, O.; Hersman, W.; Holtrop, M.; Karpius, P.; Lee, T.; Sindile, A.] Univ New Hampshire, Durham, NH 03824 USA.
[Wise, T.] Univ Wisconsin, Madison, WI 53706 USA.
[van den Brand, J. F. J.] Vrije Univ Amsterdam, Amsterdam, Netherlands.
[van den Brand, J. F. J.] NIKHEF, Amsterdam, Netherlands.
RP Hasell, D (reprint author), MIT, Bates Linear Accelerator Ctr, Middleton, MA 01949 USA.
EM hasell@mit.edu
RI Schaff, William/B-5839-2009; Gao, Haiyan/G-2589-2011
NR 34
TC 21
Z9 21
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 21
PY 2009
VL 603
IS 3
BP 247
EP 262
DI 10.1016/j.nima.2009.01.131
PG 16
WC Instruments & Instrumentation; Nuclear Science & Technology; Physics,
Nuclear; Physics, Particles & Fields
SC Instruments & Instrumentation; Nuclear Science & Technology; Physics
GA 456GD
UT WOS:000266829400006
ER
PT J
AU Razzaque, S
Dermer, CD
Finke, JD
AF Razzaque, Soebur
Dermer, Charles D.
Finke, Justin D.
TI THE STELLAR CONTRIBUTION TO THE EXTRAGALACTIC BACKGROUND LIGHT AND
ABSORPTION OF HIGH-ENERGY GAMMA RAYS
SO ASTROPHYSICAL JOURNAL
LA English
DT Article
DE diffuse radiation; dust, extinction; gamma rays: observations; stars:
formation; stars: fundamental parameters; stars: luminosity function,
mass function
ID GALAXY LUMINOSITY FUNCTION; PHOTON-PHOTON COLLISIONS; STAR-FORMATION
HISTORY; 3.5 MU-M; TENTATIVE DETECTION; EXPERIMENT SEARCH; REDSHIFT
SURVEY; PAIR PRODUCTION; 1ST DETECTIONS; TEV BLAZARS
AB TeV gamma-rays from distant astrophysical sources are attenuated due to electron-positron pair creation by interacting with ultraviolet/optical to infrared photons which fill the universe and are collectively known as the extragalactic background light (EBL). We model the similar to 0.1-10 eV starlight component of the EBL derived from expressions for the stellar initial mass function ( IMF), star formation history of the universe, and wavelength-dependent absorption of a large sample of galaxies in the local universe. These models are simultaneously fitted to the EBL data as well as to the data on the stellar luminosity density in our local universe. We find that the models with modified Salpeter A IMF together with Cole et al. or Hopkins and Beacom star formation history best represent available data. Since no dust emission is included, our calculated EBL models can be interpreted as the lower limits in the similar to 0.1-1 eV range. We present simple analytic fits to the best-fit EBL model evolving with redshift. We then proceed to calculate gamma-ray opacities and absorption of similar to 10-300 GeV gamma-rays coming from different redshifts. We discuss implications of our results for the Fermi Gamma Ray Space Telescope and ground-based Air Cherenkov Telescopes.
C1 [Razzaque, Soebur; Dermer, Charles D.; Finke, Justin D.] USN, Div Space Sci, Res Lab, Washington, DC 20375 USA.
RP Razzaque, S (reprint author), USN, Div Space Sci, Res Lab, Code 7653, Washington, DC 20375 USA.
EM srazzaque@ssd5.nrl.navy.mil
FU National Research Council; Office of Naval Research
FX We thank Eli Dwek, Claude-Andre Faucher-Giguere, Dieter Hartmann, Tanja
Kneiske, Kalevi Mattila, and Floyd Stecker for helpful comments. The
work of S. R. and J.D.F. was supported by the National Research Council
Research associateship program at the Naval Research Laboratory. The
work of C. D. D. was supported by the Office of Naval Research.
NR 73
TC 32
Z9 32
U1 0
U2 2
PU IOP PUBLISHING LTD
PI BRISTOL
PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND
SN 0004-637X
J9 ASTROPHYS J
JI Astrophys. J.
PD MAY 20
PY 2009
VL 697
IS 1
BP 483
EP 492
DI 10.1088/0004-637X/697/1/483
PG 10
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 441JB
UT WOS:000265764000040
ER
PT J
AU Abdo, AA
Ackermann, M
Atwood, WB
Axelsson, M
Baldini, L
Ballet, J
Barbiellini, G
Bastieri, D
Baughman, BM
Bechtol, K
Bellazzini, R
Berenji, B
Blandford, RD
Bloom, ED
Bogaert, G
Bonamente, E
Borgland, AW
Bregeon, J
Brez, A
Brigida, M
Bruel, P
Burnett, TH
Caliandro, GA
Cameron, RA
Caraveo, PA
Casandjian, JM
Cavazzuti, E
Cecchi, C
Charles, E
Chekhtman, A
Cheung, CC
Chiang, J
Ciprini, S
Claus, R
Cohen-Tanugi, J
Colafrancesco, S
Conrad, J
Costamante, L
Cutini, S
Dermer, CD
de Angelis, A
de Palma, F
Digel, SW
Silva, EDE
Drell, PS
Dubois, R
Dumora, D
Edmonds, Y
Farnier, C
Favuzzi, C
Ferrara, EC
Fleury, P
Focke, WB
Foschini, L
Frailis, M
Fuhrmann, L
Fukazawa, Y
Funk, S
Fusco, P
Gargano, F
Gasparrini, D
Gehrels, N
Germani, S
Giebels, B
Giglietto, N
Giordano, F
Giroletti, M
Glanzman, T
Godfrey, G
Grenier, IA
Grondin, MH
Grove, JE
Guillemot, L
Guiriec, S
Harding, AK
Hartman, RC
Hayashida, M
Hays, E
Healey, SE
Hughes, RE
Johannesson, G
Johnson, AS
Johnson, RP
Johnson, WN
Kadler, M
Kamae, T
Katagiri, H
Kataoka, J
Kawai, N
Kerr, M
Knodlseder, J
Kocian, ML
Kuehn, F
Kuss, M
Latronico, L
Lee, SH
Lemoine-Goumard, M
Longo, F
Loparco, F
Lott, B
Lovellette, MN
Lubrano, P
Madejski, GM
Makeev, A
Marelli, M
Mazziotta, MN
McEnery, JE
McGlynn, S
Meurer, C
Michelson, PF
Mitthumsiri, W
Mizuno, T
Moiseev, AA
Monte, C
Monzani, ME
Morselli, A
Moskalenko, IV
Murgia, S
Nolan, PL
Nuss, E
Ohno, M
Ohsugi, T
Ojha, R
Omodei, N
Orlando, E
Ormes, JF
Paneque, D
Panetta, JH
Parent, D
Pepe, M
Pesce-Rollins, M
Piron, F
Porter, TA
Raino, S
Rando, R
Razzano, M
Reimer, A
Reimer, O
Reposeur, T
Reyes, LC
Ritz, S
Rochester, LS
Rodriguez, AY
Romani, RW
Roth, M
Ryde, F
Sadrozinski, HFW
Sambruna, R
Sanchez, D
Sander, A
Parkinson, PMS
Sgro, C
Shaw, MS
Siskind, EJ
Smith, DA
Smith, PD
Spandre, G
Spinelli, P
Starck, JL
Strickman, MS
Suson, DJ
Tajima, H
Takahashi, H
Tanaka, T
Thayer, JB
Thayer, JG
Thompson, DJ
Tibaldo, L
Tibolla, O
Torres, DF
Tosti, G
Tramacere, A
Usher, TL
Vilchez, N
Vitale, V
Waite, AP
Wang, P
Winer, BL
Wood, KS
Ylinen, T
Ziegler, M
Edwards, PG
Chester, MM
Burrows, DN
Hauser, M
Wagner, S
AF Abdo, A. A.
Ackermann, M.
Atwood, W. B.
Axelsson, M.
Baldini, L.
Ballet, J.
Barbiellini, G.
Bastieri, D.
Baughman, B. M.
Bechtol, K.
Bellazzini, R.
Berenji, B.
Blandford, R. D.
Bloom, E. D.
Bogaert, G.
Bonamente, E.
Borgland, A. W.
Bregeon, J.
Brez, A.
Brigida, M.
Bruel, P.
Burnett, T. H.
Caliandro, G. A.
Cameron, R. A.
Caraveo, P. A.
Casandjian, J. M.
Cavazzuti, E.
Cecchi, C.
Charles, E.
Chekhtman, A.
Cheung, C. C.
Chiang, J.
Ciprini, S.
Claus, R.
Cohen-Tanugi, J.
Colafrancesco, S.
Conrad, J.
Costamante, L.
Cutini, S.
Dermer, C. D.
de Angelis, A.
de Palma, F.
Digel, S. W.
do Couto E Silva, E.
Drell, P. S.
Dubois, R.
Dumora, D.
Edmonds, Y.
Farnier, C.
Favuzzi, C.
Ferrara, E. C.
Fleury, P.
Focke, W. B.
Foschini, L.
Frailis, M.
Fuhrmann, L.
Fukazawa, Y.
Funk, S.
Fusco, P.
Gargano, F.
Gasparrini, D.
Gehrels, N.
Germani, S.
Giebels, B.
Giglietto, N.
Giordano, F.
Giroletti, M.
Glanzman, T.
Godfrey, G.
Grenier, I. A.
Grondin, M. -H.
Grove, J. E.
Guillemot, L.
Guiriec, S.
Harding, A. K.
Hartman, R. C.
Hayashida, M.
Hays, E.
Healey, S. E.
Hughes, R. E.
Johannesson, G.
Johnson, A. S.
Johnson, R. P.
Johnson, W. N.
Kadler, M.
Kamae, T.
Katagiri, H.
Kataoka, J.
Kawai, N.
Kerr, M.
Knoedlseder, J.
Kocian, M. L.
Kuehn, F.
Kuss, M.
Latronico, L.
Lee, S. -H.
Lemoine-Goumard, M.
Longo, F.
Loparco, F.
Lott, B.
Lovellette, M. N.
Lubrano, P.
Madejski, G. M.
Makeev, A.
Marelli, M.
Mazziotta, M. N.
McEnery, J. E.
McGlynn, S.
Meurer, C.
Michelson, P. F.
Mitthumsiri, W.
Mizuno, T.
Moiseev, A. A.
Monte, C.
Monzani, M. E.
Morselli, A.
Moskalenko, I. V.
Murgia, S.
Nolan, P. L.
Nuss, E.
Ohno, M.
Ohsugi, T.
Ojha, R.
Omodei, N.
Orlando, E.
Ormes, J. F.
Paneque, D.
Panetta, J. H.
Parent, D.
Pepe, M.
Pesce-Rollins, M.
Piron, F.
Porter, T. A.
Raino, S.
Rando, R.
Razzano, M.
Reimer, A.
Reimer, O.
Reposeur, T.
Reyes, L. C.
Ritz, S.
Rochester, L. S.
Rodriguez, A. Y.
Romani, R. W.
Roth, M.
Ryde, F.
Sadrozinski, H. F. -W.
Sambruna, R.
Sanchez, D.
Sander, A.
Parkinson, P. M. Saz
Sgro, C.
Shaw, M. S.
Siskind, E. J.
Smith, D. A.
Smith, P. D.
Spandre, G.
Spinelli, P.
Starck, J. -L.
Strickman, M. S.
Suson, D. J.
Tajima, H.
Takahashi, H.
Tanaka, T.
Thayer, J. B.
Thayer, J. G.
Thompson, D. J.
Tibaldo, L.
Tibolla, O.
Torres, D. F.
Tosti, G.
Tramacere, A.
Usher, T. L.
Vilchez, N.
Vitale, V.
Waite, A. P.
Wang, P.
Winer, B. L.
Wood, K. S.
Ylinen, T.
Ziegler, M.
Edwards, P. G.
Chester, M. M.
Burrows, D. N.
Hauser, M.
Wagner, S.
CA Fermi LAT Collaboration
TI FERMI/LARGE AREA TELESCOPE DISCOVERY OF GAMMA-RAY EMISSION FROM THE
FLAT-SPECTRUM RADIO QUASAR PKS 1454-354
SO ASTROPHYSICAL JOURNAL
LA English
DT Article
DE galaxies: active; gamma rays: observations; quasars: individual (PKS
1454-354)
ID SOURCE CATALOG; EGRET SOURCES; SKY SURVEY; IDENTIFICATIONS; SAMPLE;
DISTRIBUTIONS; SOFTWARE; BLAZARS; MISSION; MODEL
AB We report the discovery by the Large Area Telescope (LAT) onboard the Fermi Gamma-Ray Space Telescope of high-energy gamma-ray (GeV) emission from the flat-spectrum radio quasar PKS 1454-354 (z = 1.424). On 2008 September 4, the source rose to a peak flux of (3.5 +/- 0.7) x 10(-6) ph cm(-2) s(-1) (E > 100 MeV) on a timescale of hours and then slowly dropped over the following 2 days. No significant spectral changes occurred during the flare. Fermi/LAT observations also showed that PKS 1454-354 is the most probable counterpart of the unidentified EGRET source 3EG J1500-3509. Multiwavelength measurements performed during the following days (7 September with Swift; 6-7 September with the ground-based optical telescope Automated Telescope for Optical Monitoring; 13 September with the Australia Telescope Compact Array) resulted in radio, optical, UV, and X-ray fluxes greater than archival data, confirming the activity of PKS 1454-354.
C1 [Foschini, L.] Osserv Astron Brera, INAF, I-23807 Merate, LC, Italy.
[Abdo, A. A.; Chekhtman, A.; Dermer, C. D.; Grove, J. E.; Johnson, W. N.; Lovellette, M. N.; Makeev, A.; Strickman, M. S.; Wood, K. S.] USN, Res Lab, Div Space Sci, Washington, DC 20375 USA.
[Ackermann, M.; Bechtol, K.; Berenji, B.; Blandford, R. D.; Bloom, E. D.; Borgland, A. W.; Cameron, R. A.; Charles, E.; Chiang, J.; Claus, R.; Costamante, L.; Digel, S. W.; do Couto E Silva, E.; Drell, P. S.; Dubois, R.; Edmonds, Y.; Focke, W. B.; Funk, S.; Glanzman, T.; Godfrey, G.; Hayashida, M.; Healey, S. E.; Johannesson, G.; Johnson, A. S.; Kamae, T.; Kocian, M. L.; Lee, S. -H.; Madejski, G. M.; Michelson, P. F.; Mitthumsiri, W.; Monzani, M. E.; Moskalenko, I. V.; Murgia, S.; Nolan, P. L.; Paneque, D.; Reimer, A.; Reimer, O.; Rochester, L. S.; Romani, R. W.; Shaw, M. S.; Tajima, H.; Tanaka, T.; Thayer, J. B.; Thayer, J. G.; Tramacere, A.; Usher, T. L.; Waite, A. P.; Wang, P.] Stanford Univ, WW Hansen Expt Phys Lab, Kavli Inst Particle Astrophys & Cosmol, Dept Phys, Stanford, CA 94305 USA.
[Ackermann, M.; Bechtol, K.; Berenji, B.; Blandford, R. D.; Bloom, E. D.; Borgland, A. W.; Cameron, R. A.; Charles, E.; Chiang, J.; Claus, R.; Costamante, L.; Digel, S. W.; do Couto E Silva, E.; Drell, P. S.; Dubois, R.; Edmonds, Y.; Focke, W. B.; Funk, S.; Glanzman, T.; Godfrey, G.; Hayashida, M.; Healey, S. E.; Johannesson, G.; Johnson, A. S.; Kamae, T.; Kocian, M. L.; Lee, S. -H.; Madejski, G. M.; Michelson, P. F.; Mitthumsiri, W.; Monzani, M. E.; Moskalenko, I. V.; Murgia, S.; Nolan, P. L.; Paneque, D.; Reimer, A.; Reimer, O.; Rochester, L. S.; Romani, R. W.; Shaw, M. S.; Tajima, H.; Tanaka, T.; Thayer, J. B.; Thayer, J. G.; Tramacere, A.; Usher, T. L.; Waite, A. P.; Wang, P.] Stanford Univ, SLAC Natl Lab, Stanford, CA 94305 USA.
[Atwood, W. B.; Johnson, R. P.; Porter, T. A.; Sadrozinski, H. F. -W.; Parkinson, P. M. Saz; Ziegler, M.] Univ Calif Santa Cruz, Santa Cruz Inst Particle Phys, Dept Phys, Santa Cruz, CA 95064 USA.
[Atwood, W. B.; Johnson, R. P.; Porter, T. A.; Sadrozinski, H. F. -W.; Parkinson, P. M. Saz; Ziegler, M.] Univ Calif Santa Cruz, Dept Astron & Astrophys, Santa Cruz, CA 95064 USA.
[Axelsson, M.; Brez, A.; Conrad, J.; McGlynn, S.; Meurer, C.; Ryde, F.; Ylinen, T.] Oskar Klein Ctr Cosmo Particle Phys, SE-10691 Stockholm, Sweden.
[Axelsson, M.] Stockholm Univ, Dept Astron, SE-10691 Stockholm, Sweden.
[Baldini, L.; Bellazzini, R.; Bregeon, J.; Brez, A.; Kuss, M.; Latronico, L.; Razzano, M.; Ryde, F.; Sgro, C.] Ist Nazl Fis Nucl, Sez Pisa, I-56127 Pisa, Italy.
[Ballet, J.; Casandjian, J. M.; Grenier, I. A.; Starck, J. -L.] Univ Paris Diderot, CNRS, Serv Astrophys, Lab AIM,CEA,IRFU,CEA Saclay, F-91191 Gif Sur Yvette, France.
[Barbiellini, G.; Longo, F.] Ist Nazl Fis Nucl, Sez Trieste, I-34127 Trieste, Italy.
[Barbiellini, G.; Longo, F.] Univ Trieste, Dipartimento Fis, I-34127 Trieste, Italy.
[Bastieri, D.; Rando, R.; Tibaldo, L.] Ist Nazl Fis Nucl, Sez Padova, I-35131 Padua, Italy.
[Bastieri, D.; Rando, R.; Tibaldo, L.] Univ Padua, Dipartimento Fis G Galilei, I-35131 Padua, Italy.
[Baughman, B. M.; Hughes, R. E.; Kuehn, F.; Sander, A.; Smith, P. D.; Winer, B. L.] Ohio State Univ, Dept Phys, Ctr Cosmol & Astroparticle Phys, Columbus, OH 43210 USA.
[Bogaert, G.; Bruel, P.; Fleury, P.; Giebels, B.; Sanchez, D.] Ecole Polytech, CNRS, IN2P3, Lab Leprince Ringuet, F-91128 Palaiseau, France.
[Bonamente, E.; Cecchi, C.; Ciprini, S.; Germani, S.; Lubrano, P.; Pepe, M.; Tosti, G.] Ist Nazl Fis Nucl, Sez Perugia, I-06123 Perugia, Italy.
[Bonamente, E.; Cecchi, C.; Ciprini, S.; Germani, S.; Lubrano, P.; Pepe, M.; Tosti, G.] Univ Perugia, Dipartimento Fis, I-06123 Perugia, Italy.
[Brigida, M.; Caliandro, G. A.; de Palma, F.; Favuzzi, C.; Fusco, P.; Giglietto, N.; Giordano, F.; Loparco, F.; Monte, C.; Raino, S.; Spinelli, P.] Univ Politecn Bari, Dipartimento Fis M Merlin, I-70126 Bari, Italy.
[Brigida, M.; Caliandro, G. A.; de Palma, F.; Favuzzi, C.; Fusco, P.; Gargano, F.; Giglietto, N.; Giordano, F.; Loparco, F.; Mazziotta, M. N.; Monte, C.; Raino, S.; Spinelli, P.] Ist Nazl Fis Nucl, Sez Bari, I-70126 Bari, Italy.
[Burnett, T. H.; Kerr, M.; Roth, M.] Univ Washington, Dept Phys, Seattle, WA 98195 USA.
[Caraveo, P. A.; Marelli, M.] Ist Astrofis Spaziale & Fis Cosm, INAF, I-20133 Milan, Italy.
[Cavazzuti, E.; Colafrancesco, S.; Cutini, S.; Gasparrini, D.] Agenzia Spaziale Italiana ASI Sci Data Ctr, I-00044 Frascati, Rome, Italy.
[Chekhtman, A.] George Mason Univ, Fairfax, VA 22030 USA.
[Kadler, M.; Moiseev, A. A.] NASA, Goddard Space Flight Ctr, CRESST, Greenbelt, MD 20771 USA.
[Cohen-Tanugi, J.; Farnier, C.; Guiriec, S.; Nuss, E.; Piron, F.] Univ Montpellier 2, CNRS, IN2P3, Lab Phys Theor & Astroparticules, Montpellier, France.
[Conrad, J.; McGlynn, S.; Ryde, F.; Ylinen, T.] Royal Inst Technol KTH, Dept Phys, SE-10691 Stockholm, Sweden.
[Conrad, J.; Meurer, C.] Stockholm Univ, Dept Phys, SE-10691 Stockholm, Sweden.
[de Angelis, A.; Frailis, M.] Univ Udine, Dipartimento Fis, I-33100 Udine, Italy.
[de Angelis, A.; Frailis, M.] Grp Coll Udine, Ist Nazl Fis Nucl, Sez Trieste, I-33100 Udine, Italy.
[Dumora, D.; Grondin, M. -H.; Guillemot, L.; Lemoine-Goumard, M.; Lott, B.; Parent, D.; Reposeur, T.; Smith, D. A.] Ctr Etud Nucl Bordeaux Gradignan, CNRS, IN2P3, UMR 5797, F-33175 Gradignan, France.
[Dumora, D.; Grondin, M. -H.; Guillemot, L.; Lemoine-Goumard, M.; Lott, B.; Parent, D.; Reposeur, T.; Smith, D. A.] Univ Bordeaux, Ctr Etud Nucl Bordeaux Gradignan, UMR 5797, F-33175 Gradignan, France.
[Fuhrmann, L.] Max Planck Inst Radioastron, D-53121 Bonn, Germany.
[Fukazawa, Y.; Katagiri, H.; Mizuno, T.; Ohsugi, T.; Takahashi, H.] Hiroshima Univ, Dept Phys Sci, Hiroshima 7398526, Japan.
[Gehrels, N.; Ritz, S.] Univ Maryland, College Pk, MD 20742 USA.
[Giroletti, M.] Inst Radioastron, INAF, I-40129 Bologna, Italy.
[Kadler, M.] Dr Remeis Sternwarte Bamberg, D-96049 Bamberg, Germany.
[Kadler, M.] Erlangen Ctr Astroparticle Phys, D-91058 Erlangen, Germany.
[Kadler, M.] Univ Space Res Assoc, Columbia, MD 21044 USA.
[Kataoka, J.] Waseda Univ, Shinjuku Ku, Tokyo 1698050, Japan.
[Kawai, N.] RIKEN, Inst Phys & Chem Res, Cosm Radiat Lab, Wako, Saitama 3510198, Japan.
[Kawai, N.] Tokyo Inst Technol, Dept Phys, Meguro, Tokyo 1528551, Japan.
[Knoedlseder, J.; Vilchez, N.] CNRS UPS, Ctr Etud Spatiale Rayonnements, F-31028 Toulouse 4, France.
[Morselli, A.; Vitale, V.] Ist Nazl Fis Nucl, Sez Roma Tor Vergata, I-00133 Rome, Italy.
[Ohno, M.] JAXA, Inst Space & Astronaut Sci, Sagamihara, Kanagawa 2298510, Japan.
[Ojha, R.] USN Observ, Washington, DC 20392 USA.
[Orlando, E.] Max Planck Inst Extraterr Phys, D-85748 Garching, Germany.
[Ormes, J. F.] Univ Denver, Dept Phys & Astron, Denver, CO 80208 USA.
[Reyes, L. C.] Univ Chicago, Kavli Inst Cosmol Phys, Chicago, IL 60637 USA.
[Rodriguez, A. Y.; Torres, D. F.] CSIC, IEEC, Inst Ciencies Espai, Barcelona 08193, Spain.
[Siskind, E. J.] NYCB Real Time Comp Inc, Lattingtown, NY 11560 USA.
[Suson, D. J.] Purdue Univ Calumet, Dept Chem & Phys, Hammond, IN 46323 USA.
[Tibolla, O.] Max Planck Inst Kernphys, D-69029 Heidelberg, Germany.
[Torres, D. F.] ICREA, Barcelona, Spain.
[Tramacere, A.] CIFS, I-10133 Turin, Italy.
[Vitale, V.] Univ Roma Tor Vergata, Dipartimento Fis, I-10133 Turin, Italy.
[Ylinen, T.] Univ Kalmar, Sch Pure & Appl Nat Sci, SE-39182 Kalmar, Sweden.
[Edwards, P. G.] Paul Wild Observ, CSIRO, ATNF, Narrabri, NSW 2390, Australia.
[Chester, M. M.; Burrows, D. N.] Penn State Univ, Dept Astron & Astrophys, University Pk, PA 16802 USA.
[Hauser, M.; Wagner, S.] Heidelberg Univ, D-69117 Heidelberg, Germany.
RP Foschini, L (reprint author), Osserv Astron Brera, INAF, I-23807 Merate, LC, Italy.
EM luigi.foschini@brera.inaf.it
RI Rando, Riccardo/M-7179-2013; Hays, Elizabeth/D-3257-2012; Johnson,
Neil/G-3309-2014; Reimer, Olaf/A-3117-2013; Funk, Stefan/B-7629-2015;
Gargano, Fabio/O-8934-2015; Loparco, Francesco/O-8847-2015; Johannesson,
Gudlaugur/O-8741-2015; Moskalenko, Igor/A-1301-2007; Mazziotta, Mario
/O-8867-2015; Sgro, Carmelo/K-3395-2016; Torres, Diego/O-9422-2016;
Orlando, E/R-5594-2016; giglietto, nicola/I-8951-2012; Tosti,
Gino/E-9976-2013; De Angelis, Alessandro/B-5372-2009; Starck,
Jean-Luc/D-9467-2011; Thompson, David/D-2939-2012; Harding,
Alice/D-3160-2012; Gehrels, Neil/D-2971-2012; McEnery,
Julie/D-6612-2012; Baldini, Luca/E-5396-2012; lubrano,
pasquale/F-7269-2012; Morselli, Aldo/G-6769-2011; Foschini,
Luigi/H-3833-2012; Nolan, Patrick/A-5582-2009; Kuss,
Michael/H-8959-2012;
OI Reimer, Olaf/0000-0001-6953-1385; Funk, Stefan/0000-0002-2012-0080;
Gargano, Fabio/0000-0002-5055-6395; Loparco,
Francesco/0000-0002-1173-5673; Johannesson,
Gudlaugur/0000-0003-1458-7036; Moskalenko, Igor/0000-0001-6141-458X;
Mazziotta, Mario /0000-0001-9325-4672; Torres,
Diego/0000-0002-1522-9065; Rando, Riccardo/0000-0001-6992-818X;
giglietto, nicola/0000-0002-9021-2888; Starck,
Jean-Luc/0000-0003-2177-7794; Thompson, David/0000-0001-5217-9135;
lubrano, pasquale/0000-0003-0221-4806; Morselli,
Aldo/0000-0002-7704-9553; Foschini, Luigi/0000-0001-8678-0324; Sgro',
Carmelo/0000-0001-5676-6214; Giordano, Francesco/0000-0002-8651-2394; De
Angelis, Alessandro/0000-0002-3288-2517; Frailis,
Marco/0000-0002-7400-2135; Caraveo, Patrizia/0000-0003-2478-8018;
Bastieri, Denis/0000-0002-6954-8862; Omodei, Nicola/0000-0002-5448-7577;
Tramacere, Andrea/0000-0002-8186-3793; Pesce-Rollins,
Melissa/0000-0003-1790-8018; Axelsson, Magnus/0000-0003-4378-8785;
Giroletti, Marcello/0000-0002-8657-8852; Kadler,
Matthias/0000-0001-5606-6154; Cutini, Sara/0000-0002-1271-2924; Berenji,
Bijan/0000-0002-4551-772X; Gasparrini, Dario/0000-0002-5064-9495;
Baldini, Luca/0000-0002-9785-7726; Marelli, Martino/0000-0002-8017-0338
FU National Aeronautics and Space Administration; Department of Energy in
the United States; Commissariat al' Energie Atomique; Centre National de
la Recherche Scientifique/Institut National de Physique Nucleaire et de
Physique des Particules in France; Agenzia Spaziale Italiana; Istituto
Nazionale di Fisica Nucleare in Italy; Ministry of Education, Culture,
Sports, Science and Technology (MEXT); High Energy Accelerator Research
Organization (KEK); Japan Aerospace Exploration Agency (JAXA) in Japan;
K.A. Wallenberg Foundation; Swedish Research Council; Swedish National
Space Board in Sweden; Istituto Nazionale di Astrofisica in Italy; K.A.
Wallenberg Foundation in Sweden; Royal Swedish Academy of Sciences;
Commonwealth of Australia
FX The Fermi/LAT Collaboration acknowledges generous ongoing support from a
number of agencies and institutes that have supported both the
development and the operation of the LAT as well as scientific data
analysis. These include the National Aeronautics and Space
Administration and the Department of Energy in the United States, the
Commissariat al' Energie Atomique and the Centre National de la
Recherche Scientifique/Institut National de Physique Nucleaire et de
Physique des Particules in France, the Agenzia Spaziale Italiana and the
Istituto Nazionale di Fisica Nucleare in Italy, the Ministry of
Education, Culture, Sports, Science and Technology (MEXT), High Energy
Accelerator Research Organization (KEK) and Japan Aerospace Exploration
Agency (JAXA) in Japan, and the K.A. Wallenberg Foundation, the Swedish
Research Council and the Swedish National Space Board in Sweden.;
Additional support for science analysis during the operations phase from
the following agencies is also gratefully acknowledged: the Istituto
Nazionale di Astrofisica in Italy and the K.A. Wallenberg Foundation in
Sweden for providing a grant in support of a Royal Swedish Academy of
Sciences Research fellowship for J.C.; The Australia Telescope Compact
Array and Long Baseline Array are part of the Australia Telescope which
is funded by the Commonwealth of Australia for operation as a National
Facility managed by CSIRO. We thank the rest of the TANAMI team for
their efforts that led to the observations reported here.; This research
has made use of the NASA/IPAC Extragalactic Database (NED) which is
operated by the Jet Propulsion Laboratory, California Institute of
Technology, under contract with the National Aeronautics and Space
Administration. This research has made use of data obtained from the
High Energy Astrophysics Science Archive Research Center (HEASARC),
provided by NASA's Goddard Space Flight Center.
NR 47
TC 25
Z9 25
U1 3
U2 5
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 MAY 20
PY 2009
VL 697
IS 1
BP 934
EP 941
DI 10.1088/0004-637X/697/1/934
PG 8
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 441JB
UT WOS:000265764000080
ER
PT J
AU Najita, JR
Doppmann, GW
Bitner, MA
Richter, MJ
Lacy, JH
Jaffe, DT
Carr, JS
Meijerink, R
Blake, GA
Herczeg, GJ
Glassgold, AE
AF Najita, Joan R.
Doppmann, Greg W.
Bitner, Martin A.
Richter, Matthew J.
Lacy, John H.
Jaffe, Daniel T.
Carr, John S.
Meijerink, Rowin
Blake, Geoffrey A.
Herczeg, Gregory J.
Glassgold, Alfred E.
TI HIGH-RESOLUTION SPECTROSCOPY OF [Ne II] EMISSION FROM AA Tau AND GM Aur
SO ASTROPHYSICAL JOURNAL
LA English
DT Article
DE circumstellar matter; planetary systems: protoplanetary disks; stars:
individual (AA Tau, GM Aur); stars: pre-main sequence
ID IRRADIATED PROTOPLANETARY DISKS; YOUNG CIRCUMSTELLAR DISKS; CO
FUNDAMENTAL EMISSION; SPITZER IRS SPECTRA; MAGNETOSPHERIC ACCRETION;
TW-HYDRAE; MOLECULAR GAS; LINE EMISSION; STARS; AURIGAE
AB We present high-resolution (R = 80,000) spectroscopy of [Ne II] emission from two young stars, GM Aur and AA Tau, which have moderate to high inclinations. The emission from both sources appears centered near the stellar velocity and is broader than the [Ne II] emission measured previously for the face-on disk system TW Hya. These properties are consistent with a disk origin for the [Ne II] emission we detect, with disk rotation (rather than photoevaporation or turbulence in a hot disk atmosphere) playing the dominant role in the origin of the line width. In the non-face-on systems, the [Ne II] emission is narrower than the CO fundamental emission from the same sources. If the widths of both diagnostics are dominated by Keplerian rotation, this suggests that the [Ne II] emission arises from larger disk radii on average than does the CO emission. The equivalent width of the [Ne II] emission we detect is less than that of the spectrally unresolved [Ne II] feature in the Spitzer spectra of the same sources. Variability in the [Ne II] emission or the mid-infrared continuum, a spatially extended [Ne II] component, or a very (spectrally) broad [Ne II] component might account for the difference in the equivalent widths.
C1 [Najita, Joan R.; Doppmann, Greg W.] Natl Opt Astron Observ, Tucson, AZ 85719 USA.
[Bitner, Martin A.] Space Telescope Sci Inst, Baltimore, MD 21218 USA.
[Richter, Matthew J.] Univ Calif Davis, Dept Phys, Davis, CA 95616 USA.
[Lacy, John H.; Jaffe, Daniel T.] Univ Texas Austin, Dept Astron, Austin, TX 78712 USA.
[Carr, John S.] USN, Res Lab, Washington, DC 20375 USA.
[Meijerink, Rowin; Blake, Geoffrey A.] CALTECH, Div Geol & Planetary Sci, Pasadena, CA 91125 USA.
[Herczeg, Gregory J.] Max Planck Inst Extraterr Phys, D-85741 Garching, Germany.
[Glassgold, Alfred E.] Univ Calif Berkeley, Dept Astron, Berkeley, CA 94720 USA.
RP Najita, JR (reprint author), Natl Opt Astron Observ, 950 N Cherry Ave, Tucson, AZ 85719 USA.
OI Meijerink, Rowin/0000-0001-7584-9293; Herczeg,
Gregory/0000-0002-7154-6065
FU NSF [AST-0607312, AST-0708074]; NASA/USRA SOFIA; Gemini Observatory;
NASA [NNH07AG51I, NNG04GG92G]; NASA Astrobiology Institute under
Cooperative Agreement [CAN-02-OSS-02]; Life and Planets Astrobiology
Center (LAPLACE); 6.1 base; Association of Universities for Research in
Astronomy, Inc.; cooperative agreement with the NSF on behalf of the
Gemini partnership; National Science Foundation (United States);
Particle Physics and Astronomy Research Council (United Kingdom);
National Research Council (Canada); CONICYT (Chile); Australian Research
Council (Australia); CNPq (Brazil); CONICET (Argentina); W.M. Keck
Foundation
FX We thank Nathan Crockett for his help reducing the CO spectrum of AA
Tau, and Colette Salyk for making available her published CO spectrum of
GM Aur. We thank the Gemini staff for their support of TEXES
observations on Gemini North. The development of TEXES was supported by
grants from the NSF and the NASA/USRA SOFIA project. Modification of
TEXES for use on Gemini was supported by Gemini Observatory.
Observations with TEXES were supported by NSF grant AST-0607312.
Financial support for the work of J. R. N. and G. W. D. was provided by
the NASA Origins of Solar Systems program (NNH07AG51I) and the NASA
Astrobiology Institute under Cooperative Agreement CAN-02-OSS-02 issued
through the Office of Space Science. This work was also supported by the
Life and Planets Astrobiology Center (LAPLACE). Basic research in
infrared astronomy at the Naval Research Laboratory is supported by 6.1
base funding. M. J. R. acknowledges support from NSF grant AST-0708074
and NASA grant NNG04GG92G. This work is based on observations obtained
at the Gemini Observatory, which is operated by the Association of
Universities for Research in Astronomy, Inc., under a cooperative
agreement with the NSF on behalf of the Gemini partnership: the National
Science Foundation (United States), the Particle Physics and Astronomy
Research Council (United Kingdom), the National Research Council
(Canada), CONICYT (Chile), the Australian Research Council (Australia),
CNPq (Brazil), and CONICET (Argentina). The NIRSPEC data presented
herein were obtained at the W. M. Keck Observatory, in part via the TSIP
program administered by NOAO and in part from telescope time allocated
to NASA through the agency's scientific partnership with the California
Institute of Technology and the University of California. The
Observatory was made possible by the generous financial support of the
W.M. Keck Foundation. The authors recognize and acknowledge the very
significant cultural role and reverence that the summit of Mauna Kea has
always had within the indigenous Hawaiian community. We are most
fortunate to have the opportunity to conduct observations from this
mountain.
NR 48
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U1 1
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PU IOP PUBLISHING LTD
PI BRISTOL
PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND
SN 0004-637X
J9 ASTROPHYS J
JI Astrophys. J.
PD MAY 20
PY 2009
VL 697
IS 1
BP 957
EP 963
DI 10.1088/0004-637X/697/1/957
PG 7
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 441JB
UT WOS:000265764000083
ER
PT J
AU Gondarenko, NA
Ossakow, SL
Bernhardt, PA
AF Gondarenko, N. A.
Ossakow, S. L.
Bernhardt, P. A.
TI Collisional/resonance absorption in cold/warm magnetized plasmas of the
F-region high-latitude ionosphere
SO GEOPHYSICAL RESEARCH LETTERS
LA English
DT Article
ID MODE CONVERSION; ELECTROMAGNETIC-WAVES
AB The collisional/resonance absorption due to linear mode conversion of electromagnetic waves into electrostatic/plasma waves is studied in cold/warm magnetized plasmas relevant to the F-region of the high-latitude ionosphere. The absorption coefficient is calculated numerically using a full-wave model for high-frequency waves incident normally/obliquely to the direction of inhomogeneity. The absorption coefficient of collisional cold plasmas is found to be independent of the collision frequency in the small range of incidence angles near the critical angle; whereas, outside this range absorption increases with increasing collisions. In warm collisionless plasmas, the resonance absorption coefficient is shown to be independent of the electron temperature values pertinent to the F-region plasma. We have demonstrated for the first time a strong effect of the external magnetic field arbitrarily oriented in the plane of incidence on the absorption coefficient, which is not pronounced in the limit of weakly magnetized plasmas. Citation: Gondarenko, N. A., S. L. Ossakow, and P. A. Bernhardt (2009), Collisional/resonance absorption in cold/warm magnetized plasmas of the F-region high-latitude ionosphere, Geophys. Res. Lett., 36, L10101, doi: 10.1029/2009GL038379.
C1 [Bernhardt, P. A.] USN, Res Lab, Div Plasma Phys, Washington, DC 20375 USA.
[Gondarenko, N. A.] Univ Maryland, Inst Res Elect & Appl Phys, College Pk, MD 20742 USA.
EM nagondare@verizon.net; slossakow@aol.com; paul.bernhardt@nrl.navy.mil
FU Office of Naval Research
FX This research was supported by the Office of Naval Research.
NR 14
TC 0
Z9 0
U1 0
U2 0
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 0094-8276
J9 GEOPHYS RES LETT
JI Geophys. Res. Lett.
PD MAY 20
PY 2009
VL 36
AR L10101
DI 10.1029/2009GL038379
PG 4
WC Geosciences, Multidisciplinary
SC Geology
GA 449XB
UT WOS:000266362900006
ER
PT J
AU Sapsford, KE
Farrell, D
Sun, S
Rasooly, A
Mattoussi, H
Medintz, IL
AF Sapsford, Kim E.
Farrell, Dorothy
Sun, Steven
Rasooly, Avraham
Mattoussi, Hedi
Medintz, Igor L.
TI Monitoring of enzymatic proteolysis on a electroluminescent-CCD
microchip platform using quantum dot-peptide substrates
SO SENSORS AND ACTUATORS B-CHEMICAL
LA English
DT Article; Proceedings Paper
CT 9th European Conference on Optical Chemical Sensors and Biosensors
(EUROPT(R) ODE 9)
CY MAR 30-APR 02, 2008
CL Dublin, IRELAND
DE Electroluminescent excitation; CCD; Resonance energy transfer; FRET;
Quantum dots; Peptides; Protease sensor; Trypsin; Microfabricated
device; Biosensor
ID RESONANCE ENERGY-TRANSFER; TRYPSIN INHIBITION; PROTEASES; PROTEIN;
KINETICS; DEVICES; NANOCRYSTALLITES; FLUOROPHORES; LIGANDS; SYSTEMS
AB Microfabricated devices will have a large impact on many aspects of analytical chemistry from clinical diagnostics to security applications due to their small size, ease of fabrication, portability and low sample volumes. In this report we compare quantum dot (QD)-peptide fluorescence resonance energy transfer (FRET) and Subsequent FRET-based monitoring of enzymatic proteolysis on both a conventional laboratory fluorescent assay plate reader and an electroluminescent-charged-coupled device (EL-CCD) microchip detection platform. The EL-CCD setup combines the spatial detection of CCD with the simple illumination provided by EL strips to measure fluorescence from multi-well credit card-sized sample chips. Data on FRET between a QD donor and a dye-labeled peptide acceptor along with their usage as a substrate for trypsin proteolysis were collected on both platforms and analyzed. Despite a greater than 12-fold reduction in assay volumes in the microchip format and simplification of excitation/emission monitoring, the data reflected a general agreement including an analysis of the QD donor-dye acceptor FRET efficiency and the determination of proteolytic kinetic parameters such as enzymatic velocity V(max) and the Michaelis constant Km. The EL-CCD was further utilized to monitor specific ovomucoid inhibition of trypsin activity. The results suggest that the unique properties inherent to QDs can be combined with the reduced-scale nature of microfabricated devices to make them suitable fora variety of focused bioanalytical applications. including point-of-care diagnostics and global healthcare applications. (C) 2008 Elsevier B.V. All rights reserved.
C1 [Sapsford, Kim E.; Sun, Steven; Rasooly, Avraham] US FDA, Div Biol, Off Sci & Engn Labs, Silver Spring, MD 20993 USA.
[Farrell, Dorothy; Mattoussi, Hedi] USN, Div Opt Sci Code 5611, Res Lab, Washington, DC 20375 USA.
[Sun, Steven] Univ Maryland Baltimore Cty, Ctr Adv Sensor Technol, Baltimore, MD 21227 USA.
[Rasooly, Avraham] NCI, Bethesda, MD 20892 USA.
[Medintz, Igor L.] USN, Ctr Biol Mol Sci & Engn Code 6900, Res Lab, Washington, DC 20375 USA.
RP Sapsford, KE (reprint author), US FDA, Div Biol, Off Sci & Engn Labs, Silver Spring, MD 20993 USA.
EM Kim.sapsford@fda.hhs.gov; Igor.Medintz@nrl.navy.mil
NR 50
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U1 3
U2 36
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 20
PY 2009
VL 139
IS 1
BP 13
EP 21
DI 10.1016/j.snb.2008.07.026
PG 9
WC Chemistry, Analytical; Electrochemistry; Instruments & Instrumentation
SC Chemistry; Electrochemistry; Instruments & Instrumentation
GA 450VO
UT WOS:000266429400004
ER
PT J
AU Shin, JC
D'Souza, M
Liu, Z
Kirch, J
Mawst, LJ
Botez, D
Vurgaftman, I
Meyer, JR
AF Shin, J. C.
D'Souza, M.
Liu, Z.
Kirch, J.
Mawst, L. J.
Botez, D.
Vurgaftman, I.
Meyer, J. R.
TI Highly temperature insensitive, deep-well 4.8 mu m emitting quantum
cascade semiconductor lasers
SO APPLIED PHYSICS LETTERS
LA English
DT Article
DE current density; quantum cascade lasers; semiconductor lasers;
semiconductor quantum wells
ID CONTINUOUS-WAVE OPERATION; ROOM-TEMPERATURE
AB 4.8 mu m emitting, quantum cascade (QC) lasers that suppress carrier leakage out of their active regions to the continuum have been realized by using deep (in energy) quantum wells in the active regions, tall barriers in and around the active regions, and tapered conduction-band-edge relaxation regions. The characteristic temperature coefficients T(0) and T(1) for the threshold current density J(th) and slope efficiency, respectively, reach values of 238 K over the 20-60 degrees C temperature range, which means that J(th) and the slope efficiency vary with temperature half as fast as those of conventional QC lasers. In turn, significantly improved continuous wave performance is expected.
C1 [Shin, J. C.; D'Souza, M.; Liu, Z.; Kirch, J.; Mawst, L. J.; Botez, D.] Univ Wisconsin, Dept ECE, Madison, WI 53706 USA.
[Vurgaftman, I.; Meyer, J. R.] USN, Res Lab, Washington, DC 20375 USA.
RP Shin, JC (reprint author), Univ Wisconsin, Dept ECE, Madison, WI 53706 USA.
EM botez@engr.wisc.edu
NR 16
TC 26
Z9 26
U1 0
U2 13
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 MAY 18
PY 2009
VL 94
IS 20
AR 201103
DI 10.1063/1.3139069
PG 3
WC Physics, Applied
SC Physics
GA 449PP
UT WOS:000266342800003
ER
PT J
AU Chun, C
Neta, B
AF Chun, Changbum
Neta, Beny
TI A third-order modification of Newton's method for multiple roots
SO APPLIED MATHEMATICS AND COMPUTATION
LA English
DT Article
DE Newton's method; Multiple roots; Iterative methods; Nonlinear equations;
Order of convergence; Root-finding
ID ITERATIVE METHODS; EQUATIONS; FAMILY
AB In this paper, we present a new third-order modification of Newton's method for multiple roots, which is based on existing third-order multiple root-finding methods. Numerical examples show that the new method is competitive to other methods for multiple roots. Published by Elsevier Inc.
C1 [Neta, Beny] USN, Dept Appl Math, Postgrad Sch, Monterey, CA 93943 USA.
[Chun, Changbum] Sungkyunkwan Univ, Dept Math, Suwon 440746, South Korea.
RP Neta, B (reprint author), USN, Dept Appl Math, Postgrad Sch, Monterey, CA 93943 USA.
EM cbchun@skku.edu; bneta@nps.edu
RI Neta, Beny/B-1737-2009
NR 19
TC 34
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U1 0
U2 1
PU ELSEVIER SCIENCE INC
PI NEW YORK
PA 360 PARK AVE SOUTH, NEW YORK, NY 10010-1710 USA
SN 0096-3003
J9 APPL MATH COMPUT
JI Appl. Math. Comput.
PD MAY 15
PY 2009
VL 211
IS 2
BP 474
EP 479
DI 10.1016/j.amc.2009.01.087
PG 6
WC Mathematics, Applied
SC Mathematics
GA 441QJ
UT WOS:000265783700023
ER
PT J
AU Paudel, MR
Wolfe, CS
Ali, N
Stadler, S
Christodoulides, JA
Ederer, DL
Li, YW
Callcott, TA
Freeland, JW
AF Paudel, Moti R.
Wolfe, Christopher S.
Ali, Naushad
Stadler, Shane
Christodoulides, Joseph A.
Ederer, David L.
Li, Yinwan
Callcott, Thomas A.
Freeland, John W.
TI X-ray magnetic circular dichroism of pulsed laser deposited Co2MnSn and
Co2MnSb thin films grown on GaAs (001)
SO JOURNAL OF APPLIED PHYSICS
LA English
DT Article
DE antimony alloys; cobalt alloys; magnetic circular dichroism; magnetic
moments; magnetic thin films; manganese alloys; metallic thin films;
pulsed laser deposition; sum rules; tin alloys; X-ray absorption spectra
ID HALF-METALLIC FERROMAGNETS; HEUSLER ALLOYS; COBALT
AB We present the structural and element specific magnetic properties of Co2MnSn and Co2MnSb thin films grown on GaAs (100) substrates using pulsed laser deposition. X-ray magnetic circular dichroism (XMCD) spectra were measured for 400 A thick films at the L-2,L-3 edges of Co and Mn. Element specific moments for Co and Mn in Co2MnSn were calculated from the x-ray absorption and XMCD spectra using the XMCD sum rules. The ratios of orbital to spin magnetic moments for Co and Mn were calculated for Co2MnSn and Co2MnSb.
C1 [Paudel, Moti R.; Wolfe, Christopher S.; Ali, Naushad; Stadler, Shane] So Illinois Univ, Dept Phys, Carbondale, IL 62901 USA.
[Christodoulides, Joseph A.] USN, Res Lab, Washington, DC 20375 USA.
[Ederer, David L.; Li, Yinwan] Tulane Univ, Dept Phys, New Orleans, LA 70118 USA.
[Callcott, Thomas A.] Univ Tennessee, Dept Phys, Knoxville, TN 37996 USA.
[Freeland, John W.] Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA.
RP Paudel, MR (reprint author), Univ Alberta, Cross Canc Inst, Dept Oncol, Edmonton, AB T6G 1Z2, Canada.
EM motirajpaudel@yahoo.com
FU NSF [NSF-DMR-0545728]; U. S. Department of Energy, Office of Science
[DE-AC02-06CH11357]
FX This work is supported by NSF Grant No. NSF-DMR-0545728. The Advanced
Photon Source is supported by the U. S. Department of Energy, Office of
Science, under Contract No. DE-AC02-06CH11357.
NR 26
TC 3
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U1 2
U2 12
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 MAY 15
PY 2009
VL 105
IS 10
AR 103907
DI 10.1063/1.3126502
PG 5
WC Physics, Applied
SC Physics
GA 451VX
UT WOS:000266500100113
ER
PT J
AU Mazeina, L
Picard, YN
Caldwell, JD
Glaser, ER
Prokes, SM
AF Mazeina, Lena
Picard, Yoosuf N.
Caldwell, Joshua D.
Glaser, Evan R.
Prokes, Sharka M.
TI Growth and photoluminescence properties of vertically aligned SnO2
nanowires
SO JOURNAL OF CRYSTAL GROWTH
LA English
DT Article
DE Characterization; Photoluminescence; Nanostructures; Nanomaterials;
Sapphire
ID PULSED-LASER DEPOSITION; CORE-SHELL NANOWIRES; TIN OXIDE; ZNO NANORODS;
THIN-FILMS; ARRAYS; TEMPERATURE; SAPPHIRE; SURFACE
AB Vertically aligned SnO2 nanowires (NWs) were grown for the first time by a vapor-liquid-solid method on c-sapphire with gold as a catalyst under At gas flow. Electron backscatter diffraction analysis indicated the NWs are single crystalline having the rutile structure, grow vertically along the [10 0] direction, and exhibit a consistent epitaxial relationship where lattice mismatch is estimated to be 0.3% along the SnO2 [0 1 0] direction. The growth of these NWs is sensitive to many parameters, including growth duration, substrate type, source vapor concentration, and the thickness of the catalyst layer. Photoluminescence measurements at room temperature showed that the vertically aligned NWs exhibit an intense transition at 3.64 eV, a near band-edge transition which is rarely observed in SnO2. (C) 2009 Elsevier B.V. All rights reserved.
C1 [Mazeina, Lena; Picard, Yoosuf N.; Caldwell, Joshua D.; Glaser, Evan R.; Prokes, Sharka M.] USN, Res Lab, Div Elect Sci & Technol, Washington, DC 20375 USA.
RP Mazeina, L (reprint author), USN, Res Lab, Div Elect Sci & Technol, Washington, DC 20375 USA.
EM Lena.mazeina@nrl.navy.mil
RI Caldwell, Joshua/B-3253-2008;
OI Caldwell, Joshua/0000-0003-0374-2168; Picard, Yoosuf/0000-0002-2853-5213
FU Office of Naval Research; DTRA
FX This work was supported by the Office of Naval Research and DTRA. Lena
Mazeina and Yoosuf N. Picard thank the National Research Council for
administrative support through the National Research Associate Program.
SEM and EBSD measurements were performed at the NRL Nanoscience
Institute.
NR 40
TC 20
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U1 2
U2 17
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0022-0248
J9 J CRYST GROWTH
JI J. Cryst. Growth
PD MAY 15
PY 2009
VL 311
IS 11
BP 3158
EP 3162
DI 10.1016/j.jcrysgro.2009.03.025
PG 5
WC Crystallography; Materials Science, Multidisciplinary; Physics, Applied
SC Crystallography; Materials Science; Physics
GA 465BH
UT WOS:000267555100008
ER
PT J
AU Ridgway, S
Keogh, M
Carder, D
Finneran, J
Kamolnick, T
Todd, M
Goldblatt, A
AF Ridgway, Sam
Keogh, Mandy
Carder, Don
Finneran, James
Kamolnick, Tricia
Todd, Mark
Goldblatt, Allen
TI Dolphins maintain cognitive performance during 72 to 120 hours of
continuous auditory vigilance
SO JOURNAL OF EXPERIMENTAL BIOLOGY
LA English
DT Article
DE dolphin; Tursiops; vigilance; diurnal rhythm; brain; uni-hemispheric
sleep; hemisphere autonomy; choice response time; callosum transfer time
ID BOTTLE-NOSED-DOLPHIN; TURSIOPS-TRUNCATUS; SLEEP-DEPRIVATION; INTEROCULAR
TRANSFER; DELPHINAPTERUS-LEUCAS; MAMMALIAN SLEEP; CORPUS-CALLOSUM; WHITE
WHALES; ANESTHESIA; HEARING
AB The present study reports the first use of a choice visual-vocal response time cognitive task, during 72 or 120 h of continuous auditory vigilance. Two adult bottlenose dolphins (Tursiops truncatus), NAY ( male) and SAY ( female), maintained a very high detection rate (91.1-98.7%) of random 1.5s goal tones infrequently substituted in a background of frequent 0.5s equal-amplitude tones over continuous 72 or 120 h sessions. In addition, a choice visual-vocal response time task (CVVRT) tested cognitive performance during night time sessions, when the dolphins would have ordinarily been resting or asleep as we had observed in previous studies. NAY and SAY detected a single-bar, posterior, vertical, green (S1g) or 3-bar, anterior, horizontal, red (S2r) LED light stimulus presented randomly to each eye. They responded with a different vocalization ( whistle or pulse burst) to each stimulus ( S1g or S2r) presented randomly to left and right eyes. The animals maintained high levels of goal tone detection without signs of sleep deprivation as indicated by behavior, blood indices or marked sleep rebound during 24 h of continuous post-experiment observation. Acoustic goal tone response time (AGTRT) overall did not change during the 72 h (F=0.528, P=0.655) or 120h (F=0.384, P=0.816) sessions. Nor did CVVRT slow or degrade over the 72 h (F=4.188, P=0.104) or 120 h (F=2.298, P=0.119) AGTRT sessions.
C1 [Ridgway, Sam; Carder, Don; Finneran, James] USN, Marine Mammal Program, SSC Pacific, San Diego, CA 92152 USA.
[Ridgway, Sam] Univ Calif San Diego, Sch Med, Dept Pathol, La Jolla, CA 92093 USA.
[Keogh, Mandy] San Diego State Univ, Dept Biol, San Diego, CA 92182 USA.
[Kamolnick, Tricia; Todd, Mark] SAIC Biosolut Div, San Diego, CA 92110 USA.
[Goldblatt, Allen] Tel Aviv Univ, Dept Zool, Tel Aviv, Israel.
RP Ridgway, S (reprint author), USN, Marine Mammal Program, SSC Pacific, Code 715,53560 Hull St, San Diego, CA 92152 USA.
EM sridgway@UCSD.edu
FU Defense Advance Research Projects Agency (DARPA) [N66001-05-C-0040]
FX The animal care and training staff of the Space and Naval Warfare
Systems Center were critical for the training and care of the dolphin
subjects. We thank Pete Poirier and Mark Lasher for our LED photometric
measurements. Drs Mark Xitco, Eric Jensen, Cynthia Smith, John Carney,
Brett Giroir, Amy Kruse and Lisa Ely for support and encouragement. This
study was supported by the Defense Advance Research Projects Agency
(DARPA) under SSC San Diego Contract N66001-05-C-0040.
NR 47
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U2 6
PU COMPANY OF BIOLOGISTS LTD
PI CAMBRIDGE
PA BIDDER BUILDING CAMBRIDGE COMMERCIAL PARK COWLEY RD, CAMBRIDGE CB4 4DL,
CAMBS, ENGLAND
SN 0022-0949
J9 J EXP BIOL
JI J. Exp. Biol.
PD MAY 15
PY 2009
VL 212
IS 10
BP 1519
EP 1527
DI 10.1242/jeb.027896
PG 9
WC Biology
SC Life Sciences & Biomedicine - Other Topics
GA 440DO
UT WOS:000265680000017
PM 19411545
ER
PT J
AU Tate, JE
Bunning, ML
Lott, L
Lu, XY
Su, J
Metzgar, D
Brosch, L
Panozzo, CA
Marconi, VC
Faix, DJ
Prill, M
Johnson, B
Erdman, DD
Fonseca, V
Anderson, LJ
Widdowson, MA
AF Tate, Jacqueline E.
Bunning, Michel L.
Lott, Lisa
Lu, Xiaoyan
Su, John
Metzgar, David
Brosch, Lorie
Panozzo, Catherine A.
Marconi, Vincent C.
Faix, Dennis J.
Prill, Mila
Johnson, Brian
Erdman, Dean D.
Fonseca, Vincent
Anderson, Larry J.
Widdowson, Marc-Alain
TI Outbreak of Severe Respiratory Disease Associated with Emergent Human
Adenovirus Serotype 14 at a US Air Force Training Facility in 2007
SO JOURNAL OF INFECTIOUS DISEASES
LA English
DT Article; Proceedings Paper
CT 6th International Conference on Emerging Infectious Diseases
CY MAR 16-19, 2008
CL Atlanta, GA
ID MILITARY RECRUITS; YOUNG-ADULTS; LARGE EPIDEMIC; RISK-FACTORS; VIRUS
WATCH; INFECTIONS; ILLNESS; SURVEILLANCE; TYPE-4; CHILDREN
AB Background. In 2007, a US Air Force training facility reported a cluster of severe respiratory illnesses associated with a rare human adenovirus (Ad) serotype, Ad14. We investigated this outbreak to better understand its epidemiology, clinical spectrum, and associated risk factors.
Methods. Data were collected from ongoing febrile respiratory illness (FRI) surveillance and from a retrospective cohort investigation. Because an Ad7 vaccine is in development, Ad7 antibody titers in pretraining serum samples from trainees with mild and those with severe Ad14 illness were compared.
Results. During 2007, an estimated 551 (48%) of 1147 trainees with FRI were infected with Ad14; 23 were hospitalized with pneumonia, 4 required admission to an intensive care unit, and 1 died. Among cohort members (n = 173), the Ad14 infection rate was high (50%). Of those infected, 40% experienced FRI. Nocohort members were hospitalized. Male sex (risk ratio [RR], 4.7 [95% confidence interval {CI}, 2.2-10.1]) and an ill close contact (RR, 1.6 [95% CI, 1.2-2.2]) were associated with infection. Preexisting Ad7 neutralizing antibodies were found in 7 (37%) of 19 Ad14-positive trainees with mild illness but in 0 of 16 trainees with Ad14 pneumonia (P = .007).
Conclusions. Emergence of Ad14, a rare Ad serotype, caused a protracted outbreak of respiratory illness among military recruits. Most infected recruits experienced FRI or milder illnesses. Some required hospitalization, and 1 died. Natural Ad7 infection may protect against severe Ad14 illness.
C1 [Tate, Jacqueline E.; Lu, Xiaoyan; Panozzo, Catherine A.; Prill, Mila; Johnson, Brian; Erdman, Dean D.; Anderson, Larry J.; Widdowson, Marc-Alain] Ctr Dis Control & Prevent, Div Viral Dis, Atlanta, GA 30333 USA.
[Su, John] Ctr Dis Control & Prevent, Off Workforce & Career Dev, Atlanta, GA 30333 USA.
[Bunning, Michel L.; Brosch, Lorie] USAF, Med Grp 37, San Antonio, TX USA.
[Lott, Lisa] Off AF Surg Gen, Modernizat Directorate, San Antonio, TX USA.
[Marconi, Vincent C.] Wilford Hall USAF Med Ctr, Infect Dis Serv, San Antonio, TX 78236 USA.
[Su, John; Fonseca, Vincent] Texas Dept State Hlth Serv, Austin, TX USA.
[Metzgar, David; Faix, Dennis J.] USN, Hlth Res Ctr, San Diego, CA 92152 USA.
RP Tate, JE (reprint author), Ctr Dis Control & Prevent, Div Viral Dis, 1600 Clinton Rd NE,MS-A47, Atlanta, GA 30333 USA.
EM jqt8@cdc.gov
RI Valle, Ruben/A-7512-2013; Marconi, Vincent/N-3210-2014;
OI Marconi, Vincent/0000-0001-8409-4689; Widdowson,
Marc-Alain/0000-0002-0682-6933
NR 35
TC 64
Z9 65
U1 0
U2 3
PU UNIV CHICAGO PRESS
PI CHICAGO
PA 1427 E 60TH ST, CHICAGO, IL 60637-2954 USA
SN 0022-1899
J9 J INFECT DIS
JI J. Infect. Dis.
PD MAY 15
PY 2009
VL 199
IS 10
BP 1419
EP 1426
DI 10.1086/598520
PG 8
WC Immunology; Infectious Diseases; Microbiology
SC Immunology; Infectious Diseases; Microbiology
GA 437TK
UT WOS:000265509600003
PM 19351260
ER
PT J
AU Talathi, SS
Hwang, DU
Ditto, WL
Mareci, T
Sepulveda, H
Spano, M
Carney, PR
AF Talathi, Sachin S.
Hwang, Dong-Uk
Ditto, William L.
Mareci, Tom
Sepulveda, Hector
Spano, Mark
Carney, Paul R.
TI Circadian control of neural excitability in an animal model of temporal
lobe epilepsy
SO NEUROSCIENCE LETTERS
LA English
DT Article
DE Circadian rhythm; Epilepsy; Epileptogenesis; Latent period; Imbalance;
Population spikes
ID CIRCUIT SYNAPTIC-INTERACTIONS; STATUS EPILEPTICUS; RAT; INHIBITION;
REGION; EEG
AB We provide experimental evidence for the emerging imbalance in the firing activity of two distinct classes (type 1 and type 2) of population spikes recorded from the hippocampal area CA1 in an animal model of temporal lobe epilepsy. We show that during the latent period of epileptogenesis following status epilepticus inducing brain injury, there is a sustained increase in the firing rate of type 1 population spikes (PSI) with a concurrent decrease in the firing rate of type 2 population spikes (PS2). Both PS1 and PS2 firing rates are observed to follow a circadian rhythm and are in-phase in control rats. Following brain injury there is an abrupt phase shift in the circadian activity of the PS firing rates. We hypothesize that this abrupt phase shift is the underlying cause for the emergence of imbalance in the firing activity of the two PS. We test our hypothesis in the framework of a simple two-dimensional Wilson-Cowan model that describes the interaction between firing activities of populations of excitatory and inhibitory neurons. Published by Elsevier Ireland Ltd.
C1 [Talathi, Sachin S.; Hwang, Dong-Uk; Sepulveda, Hector; Carney, Paul R.] Univ Florida, J Crayton Pruitt Family Dept Biomed Engn, Gainesville, FL 32611 USA.
[Carney, Paul R.] Univ Florida, Dept Pediat, Gainesville, FL 32611 USA.
[Carney, Paul R.] Univ Florida, Dept Neurol, Gainesville, FL 32611 USA.
[Carney, Paul R.] Univ Florida, Dept Neurosci, Gainesville, FL 32611 USA.
[Talathi, Sachin S.; Hwang, Dong-Uk; Mareci, Tom; Carney, Paul R.] Univ Florida, McKnight Brain Inst, Gainesville, FL 32611 USA.
[Mareci, Tom] Univ Florida, Dept Biochem & Mol Biol, Gainesville, FL 32611 USA.
[Ditto, William L.] Arizona State Univ, Harrington Dept Bioengn, Tempe, AZ 85287 USA.
[Spano, Mark] Carderock Lab, NSWC, Bethesda, MD 20817 USA.
RP Talathi, SS (reprint author), Univ Florida, J Crayton Pruitt Family Dept Biomed Engn, Gainesville, FL 32611 USA.
EM sachin.talathi@gmail.com
RI Spano, Mark/B-6883-2011; Hwang, Dong-Uk /A-5842-2010;
OI Ditto, William/0000-0002-7416-8012
FU National Institutes of Biomedical Imaging and Bioengineering (NIBIB)
through Collaborative Research in Computational Neuroscience (CRCNS)
[R01 EB004752, EB007082]; Wilder Center of Excellence for Epilepsy
Research; Children's Miracle Network; Epilepsy Foundation of America
FX The National Institutes of Biomedical Imaging and Bioengineering (NIBIB)
through Collaborative Research in Computational Neuroscience (CRCNS)
Grant Numbers R01 EB004752 and EB007082, the Wilder Center of Excellence
for Epilepsy Research, and the Children's Miracle Network supported this
research. SST was partially supported through fellowship award from the
Epilepsy Foundation of America.
NR 23
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U1 1
U2 8
PU ELSEVIER IRELAND LTD
PI CLARE
PA ELSEVIER HOUSE, BROOKVALE PLAZA, EAST PARK SHANNON, CO, CLARE, 00000,
IRELAND
SN 0304-3940
J9 NEUROSCI LETT
JI Neurosci. Lett.
PD MAY 15
PY 2009
VL 455
IS 2
BP 145
EP 149
DI 10.1016/j.neulet.2009.03.057
PG 5
WC Neurosciences
SC Neurosciences & Neurology
GA 439IZ
UT WOS:000265622100015
PM 19368864
ER
PT J
AU Cadney, S
Goodall, G
Kim, G
Moran, A
Brochu, M
AF Cadney, S.
Goodall, G.
Kim, G.
Moran, Angela
Brochu, M.
TI The transformation of an Al-based crystalline electrode material to an
amorphous deposit via the electrospark welding process
SO JOURNAL OF ALLOYS AND COMPOUNDS
LA English
DT Article
DE Amorphous materials; Amorphisation; Liquid quenching
ID BULK METALLIC GLASSES; SPARK DEPOSITION; ALLOYS; COATINGS; STRENGTH
AB The electrospark welding process (ESW) has successfully been used to weld an aluminum-based crystalline alloy (Al(71.2)Co(12.2)Ce(16.6)) to a zirconium-based amorphous substrate. Due to the high cooling rates involved in the ESW process, the Al(71.2)Co(12.2)Ce(16.6) alloy transformed into an amorphous deposit without crystallizing the substrate. This result was confirmed by X-ray diffraction. An average deposit thickness of 40 +/- 10 mu m has been obtained after 10 passes. A second series of experiments have been performed using the Al(71.2)Co(12.2)Ce(16.6) alloy as both the electrode and substrate material. These tests were performed to eliminate any dilution between substrate and weld deposit. Electron backscatter diffraction (EBSD) was used to verify the amorphicity of the deposit. The average weld thickness is 12 +/- 8 mu m obtained after 10 passes. It is envisioned that the process can be used for the weld repair of worn amorphous or other heat sensitive advanced materials. (C) 2008 Elsevier B.V. All rights reserved.
C1 [Cadney, S.; Goodall, G.; Brochu, M.] McGill Univ, Dept Min & Mat Engn, Montreal, PQ H3A 2B2, Canada.
[Moran, Angela] USN Acad, Annapolis, MD 21402 USA.
RP Brochu, M (reprint author), McGill Univ, Dept Min & Mat Engn, Montreal, PQ H3A 2B2, Canada.
EM mathieu.brochu@mcgill.ca
FU McGill University; REGAL; FQRNT; NSERC
FX The author would like to thank McGill University, REGAL, FQRNT and NSERC
for their financial support of this project. Also, the authors would
like the thank Jennifer Cocle for her help with the EBSD analysis and
Camille Probst for the Monte Carlo simulations.
NR 22
TC 15
Z9 16
U1 0
U2 13
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 MAY 12
PY 2009
VL 476
IS 1-2
BP 147
EP 151
DI 10.1016/j.jallcom.2008.09.017
PG 5
WC Chemistry, Physical; Materials Science, Multidisciplinary; Metallurgy &
Metallurgical Engineering
SC Chemistry; Materials Science; Metallurgy & Metallurgical Engineering
GA 446JM
UT WOS:000266117900035
ER
PT J
AU Mullen, L
Laux, A
Cochenour, B
AF Mullen, Linda
Laux, Alan
Cochenour, Brandon
TI Propagation of modulated light in water: implications for imaging and
communications systems
SO APPLIED OPTICS
LA English
DT Article
ID OPTICAL COMMUNICATION; UNDERWATER
AB Until recently, little has been done to study the effect of higher modulation frequencies (> 100 MHz) or short (< 2 ns) pulse durations on forward-scattered light in ocean water. This forward-scattered light limits image resolution and may ultimately limit the bandwidth of a point-to-point optical communications link. The purpose of this work is to study the propagation of modulated light fields at frequencies up to 1 GHz. Results from laboratory tank experiments and their impact on future underwater optical imaging and communications systems are discussed.
C1 [Mullen, Linda; Laux, Alan; Cochenour, Brandon] USN, Air Syst Command, Electroopt & Special Mission Sensors Div, NAVAIR, Patuxent River, MD 20670 USA.
RP Mullen, L (reprint author), USN, Air Syst Command, Electroopt & Special Mission Sensors Div, NAVAIR, 22347 Cedar Point Rd, Patuxent River, MD 20670 USA.
EM linda.mullen@navy.mil
FU In-House Laboratory Innovative Research (ILIR)
FX This work was funded by In-House Laboratory Innovative Research (ILIR)
funds.
NR 12
TC 36
Z9 38
U1 0
U2 11
PU OPTICAL SOC AMER
PI WASHINGTON
PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA
SN 1559-128X
EI 2155-3165
J9 APPL OPTICS
JI Appl. Optics
PD MAY 10
PY 2009
VL 48
IS 14
BP 2607
EP 2612
DI 10.1364/AO.48.002607
PG 6
WC Optics
SC Optics
GA 451IV
UT WOS:000266464800001
PM 19424378
ER
PT J
AU Abdo, AA
Ackermann, M
Atwood, WB
Bagagli, R
Baldini, L
Ballet, J
Band, DL
Barbiellini, G
Baring, MG
Bartelt, J
Bastieri, D
Baughman, BM
Bechtol, K
Bellardi, F
Bellazzini, R
Berenji, B
Bisello, D
Blandford, RD
Bloom, ED
Bogart, JR
Bonamente, E
Borgland, AW
Bouvier, A
Bregeon, J
Brez, A
Brigida, M
Bruel, P
Burnett, TH
Caliandro, GA
Cameron, RA
Camilo, F
Caraveo, PA
Casandjian, JM
Ceccanti, M
Cecchi, C
Charles, E
Chekhtman, A
Cheung, CC
Chiang, J
Ciprini, S
Claus, R
Cognard, I
Cohen-Tanugi, J
Cominsky, LR
Conrad, J
Corbet, R
Corucci, L
Cutini, S
Davis, DS
DeKlotz, M
Dermer, CD
de Angelis, A
de Palma, F
Digel, SW
Dormody, M
Silva, EDE
Drell, PS
Dubois, R
Dumora, D
Espinoza, C
Farnier, C
Favuzzi, C
Flath, DL
Fleury, P
Focke, WB
Frailis, M
Friere, PCC
Fukazawa, Y
Funk, S
Fusco, P
Gargano, F
Gasparrini, D
Gehrels, N
Germani, S
Giannitrapani, R
Giebels, B
Giglietto, N
Giordano, F
Glanzman, T
Godfrey, G
Gotthelf, EV
Grenier, IA
Grondin, MH
Grove, JE
Guillemot, L
Guiriec, S
Haller, G
Harding, AK
Hart, PA
Hartman, RC
Hays, E
Hobbs, G
Hughes, RE
Johannesson, G
Johnson, AS
Johnson, RP
Johnson, TJ
Johnson, WN
Johnston, S
Kamae, T
Kanbach, G
Kaspi, VM
Katagiri, H
Kataoka, J
Kavelaars, A
Kawai, N
Kelly, H
Kerr, M
Kiziltan, B
Klamra, W
Knodlseder, J
Kramer, M
Kuehn, F
Kuss, M
Lande, J
Landriu, D
Latronico, L
Lee, B
Lee, SH
Lemoine-Goumard, M
Livingstone, M
Longo, F
Loparco, F
Lott, B
Lovellette, MN
Lubrano, P
Lyne, AG
Madejski, GM
Makeev, A
Manchester, RN
Marangelli, B
Marelli, M
Mazziotta, MN
McEnery, JE
McGlynn, S
McLaughlin, MA
Menon, N
Meurer, C
Michelson, PF
Mineo, T
Mirizzi, N
Mitthumsiri, W
Mizuno, T
Moiseev, AA
Mongelli, M
Monte, C
Monzani, ME
Moretti, E
Morselli, A
Moskalenko, IV
Murgia, S
Nakamori, T
Nolan, PL
Noutsos, A
Nuss, E
Ohsugi, T
Omodei, N
Orlando, E
Ormes, JF
Ozaki, M
Paccagnella, A
Paneque, D
Panetta, JH
Parent, D
Pearce, M
Pepe, M
Perchiazzi, M
Pesce-Rollins, M
Pieri, L
Pinchera, M
Piron, F
Porter, TA
Raino, S
Rando, R
Ransom, SM
Rapposelli, E
Razzano, M
Reimer, A
Reimer, O
Reposeur, T
Reyes, LC
Ritz, S
Rochester, LS
Rodriguez, AY
Romani, RW
Roth, M
Ryde, F
Sacchetti, A
Sadrozinski, HFW
Saggini, N
Sanchez, D
Sander, A
Parkinson, PMS
Segal, KN
Sellerholm, A
Sgro, C
Siskind, EJ
Smith, DA
Smith, PD
Spandre, G
Spinelli, P
Stamatikos, M
Starck, JL
Stecker, FW
Stephens, TE
Strickman, MS
Strong, AW
Suson, DJ
Tajima, H
Takahashi, H
Takahashi, T
Tanaka, T
Tenze, A
Thayer, JB
Thayer, JG
Theureau, G
Thompson, DJ
Thorsett, SE
Tibaldo, L
Tibolla, O
Torres, DF
Tramacere, A
Turri, M
Usher, TL
Vigiani, L
Vilchez, N
Vitale, V
Waite, AP
Wang, P
Watters, K
Weltevrede, P
Winer, BL
Wood, KS
Ylinen, T
Ziegler, M
AF Abdo, A. A.
Ackermann, M.
Atwood, W. B.
Bagagli, R.
Baldini, L.
Ballet, J.
Band, D. L.
Barbiellini, G.
Baring, M. G.
Bartelt, J.
Bastieri, D.
Baughman, B. M.
Bechtol, K.
Bellardi, F.
Bellazzini, R.
Berenji, B.
Bisello, D.
Blandford, R. D.
Bloom, E. D.
Bogart, J. R.
Bonamente, E.
Borgland, A. W.
Bouvier, A.
Bregeon, J.
Brez, A.
Brigida, M.
Bruel, P.
Burnett, T. H.
Caliandro, G. A.
Cameron, R. A.
Camilo, F.
Caraveo, P. A.
Casandjian, J. M.
Ceccanti, M.
Cecchi, C.
Charles, E.
Chekhtman, A.
Cheung, C. C.
Chiang, J.
Ciprini, S.
Claus, R.
Cognard, I.
Cohen-Tanugi, J.
Cominsky, L. R.
Conrad, J.
Corbet, R.
Corucci, L.
Cutini, S.
Davis, D. S.
DeKlotz, M.
Dermer, C. D.
de Angelis, A.
de Palma, F.
Digel, S. W.
Dormody, M.
do Couto e Silva, E.
Drell, P. S.
Dubois, R.
Dumora, D.
Espinoza, C.
Farnier, C.
Favuzzi, C.
Flath, D. L.
Fleury, P.
Focke, W. B.
Frailis, M.
Friere, P. C. C.
Fukazawa, Y.
Funk, S.
Fusco, P.
Gargano, F.
Gasparrini, D.
Gehrels, N.
Germani, S.
Giannitrapani, R.
Giebels, B.
Giglietto, N.
Giordano, F.
Glanzman, T.
Godfrey, G.
Gotthelf, E. V.
Grenier, I. A.
Grondin, M. -H.
Grove, J. E.
Guillemot, L.
Guiriec, S.
Haller, G.
Harding, A. K.
Hart, P. A.
Hartman, R. C.
Hays, E.
Hobbs, G.
Hughes, R. E.
Johannesson, G.
Johnson, A. S.
Johnson, R. P.
Johnson, T. J.
Johnson, W. N.
Johnston, S.
Kamae, T.
Kanbach, G.
Kaspi, V. M.
Katagiri, H.
Kataoka, J.
Kavelaars, A.
Kawai, N.
Kelly, H.
Kerr, M.
Kiziltan, B.
Klamra, W.
Knodlseder, J.
Kramer, M.
Kuehn, F.
Kuss, M.
Lande, J.
Landriu, D.
Latronico, L.
Lee, B.
Lee, S. -H.
Lemoine-Goumard, M.
Livingstone, M.
Longo, F.
Loparco, F.
Lott, B.
Lovellette, M. N.
Lubrano, P.
Lyne, A. G.
Madejski, G. M.
Makeev, A.
Manchester, R. N.
Marangelli, B.
Marelli, M.
Mazziotta, M. N.
McEnery, J. E.
McGlynn, S.
McLaughlin, M. A.
Menon, N.
Meurer, C.
Michelson, P. F.
Mineo, T.
Mirizzi, N.
Mitthumsiri, W.
Mizuno, T.
Moiseev, A. A.
Mongelli, M.
Monte, C.
Monzani, M. E.
Moretti, E.
Morselli, A.
Moskalenko, I. V.
Murgia, S.
Nakamori, T.
Nolan, P. L.
Noutsos, A.
Nuss, E.
Ohsugi, T.
Omodei, N.
Orlando, E.
Ormes, J. F.
Ozaki, M.
Paccagnella, A.
Paneque, D.
Panetta, J. H.
Parent, D.
Pearce, M.
Pepe, M.
Perchiazzi, M.
Pesce-Rollins, M.
Pieri, L.
Pinchera, M.
Piron, F.
Porter, T. A.
Raino, S.
Rando, R.
Ransom, S. M.
Rapposelli, E.
Razzano, M.
Reimer, A.
Reimer, O.
Reposeur, T.
Reyes, L. C.
Ritz, S.
Rochester, L. S.
Rodriguez, A. Y.
Romani, R. W.
Roth, M.
Ryde, F.
Sacchetti, A.
Sadrozinski, H. F. -W.
Saggini, N.
Sanchez, D.
Sander, A.
Parkinson, P. M. Saz
Segal, K. N.
Sellerholm, A.
Sgro, C.
Siskind, E. J.
Smith, D. A.
Smith, P. D.
Spandre, G.
Spinelli, P.
Stamatikos, M.
Starck, J. -L.
Stecker, F. W.
Stephens, T. E.
Strickman, M. S.
Strong, A. W.
Suson, D. J.
Tajima, H.
Takahashi, H.
Takahashi, T.
Tanaka, T.
Tenze, A.
Thayer, J. B.
Thayer, J. G.
Theureau, G.
Thompson, D. J.
Thorsett, S. E.
Tibaldo, L.
Tibolla, O.
Torres, D. F.
Tramacere, A.
Turri, M.
Usher, T. L.
Vigiani, L.
Vilchez, N.
Vitale, V.
Waite, A. P.
Wang, P.
Watters, K.
Weltevrede, P.
Winer, B. L.
Wood, K. S.
Ylinen, T.
Ziegler, M.
TI FERMI LARGE AREA TELESCOPE OBSERVATIONS OF THE VELA PULSAR
SO ASTROPHYSICAL JOURNAL
LA English
DT Article
DE gamma rays: observations; pulsars: individual (PSR B0833-45)
ID GAMMA-RAY PULSARS; POLAR-CAP; TIMING PACKAGE; LIGHT CURVES; SLOT GAPS;
EMISSION; RADIATION; MODEL; MAGNETOSPHERES; DISCOVERY
AB The Vela pulsar is the brightest persistent source in the GeV sky and thus is the traditional first target for new gamma-ray observatories. We report here on initial Fermi Large Area Telescope observations during verification phase pointed exposure and early sky survey scanning. We have used the Vela signal to verify Fermi timing and angular resolution. The high-quality pulse profile, with some 32,400 pulsed photons at E >= 0.03 GeV, shows new features, including pulse structure as fine as 0.3 ms and a distinct third peak, which shifts in phase with energy. We examine the high-energy behavior of the pulsed emission; initial spectra suggest a phase-averaged power-law index of Gamma = 1.51(-0.04)(+0.05) with an exponential cutoff at E-c = 2.9 +/- 0.1 GeV. Spectral fits with generalized cutoffs of the form e(-(E/Ec)b) require b <= 1, which is inconsistent with magnetic pair attenuation, and thus favor outer-magnetosphere emission models. Finally, we report on upper limits to any unpulsed component, as might be associated with a surrounding pulsar wind nebula.
C1 [Abdo, A. A.; Dermer, C. D.; Grove, J. E.; Johnson, W. N.; Lovellette, M. N.; Strickman, M. S.; Wood, K. S.] USN, Res Lab, Div Space Sci, Washington, DC 20375 USA.
[Ackermann, M.; Bartelt, J.; Bechtol, K.; Berenji, B.; Blandford, R. D.; Bloom, E. D.; Bogart, J. R.; Borgland, A. W.; Bouvier, A.; Cameron, R. A.; Charles, E.; Chiang, J.; Claus, R.; Digel, S. W.; do Couto e Silva, E.; Drell, P. S.; Dubois, R.; Flath, D. L.; Focke, W. B.; Funk, S.; Glanzman, T.; Godfrey, G.; Haller, G.; Hart, P. A.; Johannesson, G.; Johnson, A. S.; Kamae, T.; Kavelaars, A.; Kelly, H.; Lee, S. -H.; Madejski, G. M.; Mitthumsiri, W.; Monzani, M. E.; Moskalenko, I. V.; Murgia, S.; Nolan, P. L.; Paneque, D.; Panetta, J. H.; Reimer, A.; Reimer, O.; Rochester, L. S.; Romani, R. W.; Tajima, H.; Tanaka, T.; Thayer, J. B.; Thayer, J. G.; Waite, A. P.; Wang, P.; Watters, K.] Stanford Univ, Dept Phys, Kavli Inst Particle Astrophys & Cosmol, WW Hansen Expt Phys Lab, Stanford, CA 94305 USA.
[Ackermann, M.; Bartelt, J.; Bechtol, K.; Berenji, B.; Blandford, R. D.; Bloom, E. D.; Bogart, J. R.; Borgland, A. W.; Bouvier, A.; Cameron, R. A.; Charles, E.; Chiang, J.; Claus, R.; Digel, S. W.; do Couto e Silva, E.; Drell, P. S.; Dubois, R.; Focke, W. B.; Funk, S.; Godfrey, G.; Haller, G.; Hart, P. A.; Johannesson, G.; Johnson, A. S.; Kamae, T.; Kavelaars, A.; Kelly, H.; Lee, S. -H.; Madejski, G. M.; Mitthumsiri, W.; Murgia, S.; Nolan, P. L.; Paneque, D.; Panetta, J. H.; Reimer, A.; Reimer, O.; Rochester, L. S.; Romani, R. W.; Tajima, H.; Tanaka, T.; Thayer, J. B.; Thayer, J. G.; Turri, M.; Usher, T. L.; Waite, A. P.; Wang, P.; Watters, K.] Stanford Univ, Stanford Linear Accelerator Ctr, Stanford, CA 94305 USA.
[Atwood, W. B.; Porter, T. A.; Sadrozinski, H. F. -W.; Parkinson, P. M. Saz; Thorsett, S. E.; Ziegler, M.] Univ Calif Santa Cruz, Dept Phys, Santa Cruz Inst Particle Phys, Santa Cruz, CA 95064 USA.
[Atwood, W. B.; Porter, T. A.; Sadrozinski, H. F. -W.; Parkinson, P. M. Saz; Thorsett, S. E.; Ziegler, M.] Univ Calif Santa Cruz, Dept Astron & Astrophys, Santa Cruz, CA 95064 USA.
[Bagagli, R.; Bellardi, F.; Bellazzini, R.; Brez, A.; Ceccanti, M.; Corucci, L.; Latronico, L.; Rapposelli, E.; Razzano, M.; Saggini, N.; Sgro, C.; Spandre, G.] Ist Nazl Fis Nucl, Sez Pisa, I-56127 Pisa, Italy.
[Ballet, J.; Grenier, I. A.; Landriu, D.; Starck, J. -L.] Univ Paris Diderot, CEA Saclay, CNRS, CEA,IRFU,Lab AIM, F-91191 Gif Sur Yvette, France.
[Band, D. L.] NASA, Goddard Space Flight Ctr, CRESST, Greenbelt, MD 20771 USA.
[Barbiellini, G.] Ist Nazl Fis Nucl, Sez Trieste, I-34127 Trieste, Italy.
[Barbiellini, G.] Univ Trieste, Dipartimento Fis, I-34127 Trieste, Italy.
[Baring, M. G.] Rice Univ, Dept Phys & Astron, Houston, TX 77251 USA.
[Bastieri, D.; Bisello, D.; Paccagnella, A.; Pieri, L.; Rando, R.; Tibaldo, L.] Ist Nazl Fis Nucl, Sez Padova, I-35131 Padua, Italy.
[Bastieri, D.; Bisello, D.; Rando, R.; Tibaldo, L.] Univ Padua, Dipartimento Fis G Galilei, I-35131 Padua, Italy.
[Baughman, B. M.; Sander, A.; Smith, P. D.; Winer, B. L.; Ziegler, M.] Ohio State Univ, Dept Phys, Ctr Cosmol & Astroparticle Phys, Columbus, OH 43210 USA.
[Bonamente, E.; Ciprini, S.; Germani, S.; Pepe, M.] Ist Nazl Fis Nucl, Sez Perugia, I-06123 Perugia, Italy.
[Bonamente, E.; Cecchi, C.; Ciprini, S.; Germani, S.; Lubrano, P.; Pepe, M.] Univ Perugia, Dipartimento Fis, I-06123 Perugia, Italy.
[Brigida, M.; Caliandro, G. A.; de Palma, F.; Favuzzi, C.; Fusco, P.; Giglietto, N.; Loparco, F.; Mirizzi, N.; Monte, C.; Raino, S.; Spinelli, P.] Univ Politecn Bari, Dipartimento Fis M Merlin, I-70126 Bari, Italy.
[Caliandro, G. A.; de Palma, F.; Favuzzi, C.; Fusco, P.; Giglietto, N.; Loparco, F.; Mirizzi, N.; Monte, C.; Perchiazzi, M.; Raino, S.; Sacchetti, A.; Spinelli, P.] Ist Nazl Fis Nucl, Sez Bari, I-70126 Bari, Italy.
[Bruel, P.; Fleury, P.; Giebels, B.; Sanchez, D.] Ecole Polytech, CNRS, IN2P3, Lab Leprince Ringuet, F-91128 Palaiseau, France.
[Burnett, T. H.; Roth, M.] Univ Washington, Dept Phys, Seattle, WA 98195 USA.
[Camilo, F.; Gotthelf, E. V.] Columbia Univ, Columbia Astrophys Lab, New York, NY 10027 USA.
[Caraveo, P. A.; Marelli, M.] INAF Ist Astrofis Spaziale & Fis Cosm, I-20133 Milan, Italy.
[Chekhtman, A.; Makeev, A.] George Mason Univ, Fairfax, VA 22030 USA.
[Theureau, G.] CNRS, UMR 6115, LPCE, F-45071 Orleans 02, France.
[Theureau, G.] Observ Paris, CNRS, INSU, Stn Radioastron Nancay, F-18330 Nancay, France.
[Cohen-Tanugi, J.; Farnier, C.; Nuss, E.; Piron, F.] Univ Montpellier 2, CNRS, IN2P3, Lab Phys Theor & Astroparticules, Montpellier, France.
[Cominsky, L. R.] Sonoma State Univ, Dept Phys & Astron, Rohnert Pk, CA 94928 USA.
[Conrad, J.; Klamra, W.; Pearce, M.; Ryde, F.; Ylinen, T.] Royal Inst Technol, Dept Phys, SE-10691 Stockholm, Sweden.
[Conrad, J.; Sellerholm, A.] Stockholm Univ, Dept Phys, SE-10691 Stockholm, Sweden.
[Cutini, S.; Gasparrini, D.] ASI, Sci Data Ctr, I-00044 Frascati, Rome, Italy.
[Davis, D. S.] Univ Maryland, Ctr Space Sci & Technol, Baltimore, MD 21250 USA.
[DeKlotz, M.; Menon, N.] Stellar Solut Inc, Palo Alto, CA 94306 USA.
[de Angelis, A.; Giannitrapani, R.] Univ Udine, Dipartimento Fis, I-33100 Udine, Italy.
[de Angelis, A.; Giannitrapani, R.] Ist Nazl Fis Nucl, Sez Trieste, Grp Coll Udine, I-33100 Udine, Italy.
[Dumora, D.; Guillemot, L.; Lemoine-Goumard, M.; Lott, B.; Parent, D.; Reposeur, T.; Smith, D. A.] CEN Bordeaux Gradignan, CNRS, UMR 5797, IN2P3, F-33175 Gradignan, France.
[Dumora, D.; Grondin, M. -H.; Guillemot, L.; Lott, B.] Univ Bordeaux, Ctr Etud Nucl Bordeaux Gradignan, UMR 5797, F-33175 Gradignan, France.
[Espinoza, C.; Kramer, M.; Noutsos, A.] Univ Manchester, Jodrell Bank, Ctr Astrophys, Manchester M13 9PL, Lancs, England.
[Friere, P. C. C.] Arecibo Observ, Arecibo, PR 00612 USA.
[Fukazawa, Y.; Katagiri, H.; Takahashi, H.] Hiroshima Univ, Dept Phys Sci, Higashihiroshima 7398526, Japan.
[Fukazawa, Y.; Katagiri, H.; Takahashi, H.] Hiroshima Univ, Hiroshima Astrophys Sci Ctr, Higashihiroshima 7398526, Japan.
[Gehrels, N.; Ritz, S.] Univ Maryland, College Pk, MD 20742 USA.
[Hobbs, G.; Johnston, S.; Manchester, R. N.] CSIRO, Australia Telescope Natl Facil, Epping, NSW 1710, Australia.
[Kanbach, G.; Orlando, E.; Strong, A. W.] Max Planck Inst Extraterr Phys, D-85748 Garching, Germany.
[Kaspi, V. M.; Livingstone, M.] McGill Univ, Dept Phys, Montreal, PQ H3A 2T8, Canada.
[Kataoka, J.; Kawai, N.; Nakamori, T.] Tokyo Inst Technol, Dept Phys, Meguro, Tokyo 1528551, Japan.
[Kawai, N.] RIKEN, Cosm Radiat Lab, Wako, Saitama 3510198, Japan.
[Kiziltan, B.] UCO Lick Observ, Santa Cruz, CA 95064 USA.
[Knodlseder, J.; Vilchez, N.] CNRS, UPS, Ctr Etud Spatiale Rayonnements, F-31028 Toulouse 4, France.
[Lee, B.] Orbital Network Engn, Cupertino, CA 95014 USA.
[McLaughlin, M. A.] W Virginia Univ, Dept Phys, Morgantown, WV 26506 USA.
[Mineo, T.] IASF Palermo, I-90146 Palermo, Italy.
[Moretti, E.; Vitale, V.] Ist Nazl Fis Nucl, Sez Roma Tor Vergata, I-00133 Rome, Italy.
[Morselli, A.; Vitale, V.] Univ Roma Tor Vergata, Dipartimento Fis, I-00133 Rome, Italy.
[Ormes, J. F.] Univ Denver, Dept Phys & Astron, Denver, CO 80208 USA.
[Ozaki, M.; Takahashi, T.] Japan Aerosp Explorat Agcy, Inst Space & Astronaut Sci, JAXA, Sagamihara, Kanagawa 2298510, Japan.
[Paccagnella, A.] Univ Padua, Dipartimento Ingn Informaz, I-35131 Padua, Italy.
[Ransom, S. M.] Natl Radio Astron Observ, Charlottesville, VA 22903 USA.
[Reyes, L. C.] Univ Chicago, Kavli Inst Cosmol Phys, Chicago, IL 60637 USA.
[Rodriguez, A. Y.; Torres, D. F.] CSIC, Inst Ciencies Espai, IEEC, Barcelona 08193, Spain.
[Siskind, E. J.] NYCB Real Time Comp Inc, Lattingtown, NY 11560 USA.
[Suson, D. J.] Purdue Univ Calumet, Dept Chem & Phys, Hammond, IN 46323 USA.
[Tibolla, O.] Heidelberg Univ, D-69117 Heidelberg, Germany.
[Torres, D. F.] ICREA, Barcelona, Spain.
[Tramacere, A.] CIFS, I-10133 Turin, Italy.
[Ylinen, T.] Univ Kalmar, Sch Pure & Appl Nat Sci, SE-39182 Kalmar, Sweden.
RP Abdo, AA (reprint author), USN, Res Lab, Div Space Sci, Washington, DC 20375 USA.
EM massimiliano.razzano@pi.infn.it; rwr@astro.stanford.edu
RI Starck, Jean-Luc/D-9467-2011; Thompson, David/D-2939-2012; Stecker,
Floyd/D-3169-2012; Harding, Alice/D-3160-2012; Gehrels,
Neil/D-2971-2012; McEnery, Julie/D-6612-2012; Baldini, Luca/E-5396-2012;
lubrano, pasquale/F-7269-2012; Morselli, Aldo/G-6769-2011; Nolan,
Patrick/A-5582-2009; Kuss, Michael/H-8959-2012; giglietto,
nicola/I-8951-2012; Ozaki, Masanobu/K-1165-2013; Rando,
Riccardo/M-7179-2013; Hays, Elizabeth/D-3257-2012; Johnson,
Neil/G-3309-2014; Reimer, Olaf/A-3117-2013; Funk, Stefan/B-7629-2015;
Loparco, Francesco/O-8847-2015; Johannesson, Gudlaugur/O-8741-2015;
Gargano, Fabio/O-8934-2015; Moskalenko, Igor/A-1301-2007; Mazziotta,
Mario /O-8867-2015; Sgro, Carmelo/K-3395-2016; Torres,
Diego/O-9422-2016; Orlando, E/R-5594-2016;
OI Starck, Jean-Luc/0000-0003-2177-7794; Thompson,
David/0000-0001-5217-9135; lubrano, pasquale/0000-0003-0221-4806;
Morselli, Aldo/0000-0002-7704-9553; giglietto,
nicola/0000-0002-9021-2888; Reimer, Olaf/0000-0001-6953-1385; Funk,
Stefan/0000-0002-2012-0080; Loparco, Francesco/0000-0002-1173-5673;
Johannesson, Gudlaugur/0000-0003-1458-7036; Gargano,
Fabio/0000-0002-5055-6395; Moskalenko, Igor/0000-0001-6141-458X;
Mazziotta, Mario /0000-0001-9325-4672; Torres,
Diego/0000-0002-1522-9065; Rando, Riccardo/0000-0001-6992-818X; Sgro',
Carmelo/0000-0001-5676-6214; Giordano, Francesco/0000-0002-8651-2394;
Thorsett, Stephen/0000-0002-2025-9613; Mineo,
Teresa/0000-0002-4931-8445; Stephens, Thomas/0000-0003-3065-6871; De
Angelis, Alessandro/0000-0002-3288-2517; Frailis,
Marco/0000-0002-7400-2135; Caraveo, Patrizia/0000-0003-2478-8018;
Bastieri, Denis/0000-0002-6954-8862; Omodei, Nicola/0000-0002-5448-7577;
Pesce-Rollins, Melissa/0000-0003-1790-8018; Ransom,
Scott/0000-0001-5799-9714; Moretti, Elena/0000-0001-5477-9097; Cutini,
Sara/0000-0002-1271-2924; Berenji, Bijan/0000-0002-4551-772X;
Gasparrini, Dario/0000-0002-5064-9495; Tramacere,
Andrea/0000-0002-8186-3793; Baldini, Luca/0000-0002-9785-7726; Marelli,
Martino/0000-0002-8017-0338
FU National Aeronautics and Space Administration; Department of Energy in
the United States; Commissariat a l'Energie Atomique; Centre National de
la Recherche Scientifique/Institut National de Physique Nucleaire et de
Physique des Particules in France; Agenzia Spaziale Italiana; Istituto
Nazionale di Fisica Nucleare; Istituto Nazionale di Astrofisica in
Italy; Ministry of Education, Culture, Sports, Science and Technology
(MEXT); High Energy Accelerator Research Organization (KEK); Japan
Aerospace Exploration Agency (JAXA); K. A. Wallenberg Foundation;
Swedish National Space Board; Commonwealth of Australia
FX The Fermi LAT Collaboration acknowledges the generous support of a
number of agencies and institutes that have supported the development of
the LAT. These include the National Aeronautics and Space Administration
and the Department of Energy in the United States, the Commissariat a
l'Energie Atomique and the Centre National de la Recherche
Scientifique/Institut National de Physique Nucleaire et de Physique des
Particules in France, the Agenzia Spaziale Italiana, the Istituto
Nazionale di Fisica Nucleare, and the Istituto Nazionale di Astrofisica
in Italy, the Ministry of Education, Culture, Sports, Science and
Technology (MEXT), High Energy Accelerator Research Organization (KEK)
and Japan Aerospace Exploration Agency (JAXA) in Japan, and the K. A.
Wallenberg Foundation and the Swedish National Space Board in Sweden.
The Australia Telescope is funded by the Commonwealth of Australia for
operation as a National Facility managed by the CSIRO.
NR 41
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PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0004-637X
EI 1538-4357
J9 ASTROPHYS J
JI Astrophys. J.
PD MAY 10
PY 2009
VL 696
IS 2
BP 1084
EP 1093
DI 10.1088/0004-637X/696/2/1084
PG 10
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 441IO
UT WOS:000265762700003
ER
PT J
AU Wik, DR
Sarazin, CL
Finoguenov, A
Matsushita, K
Nakazawa, K
Clarke, TE
AF Wik, Daniel R.
Sarazin, Craig L.
Finoguenov, Alexis
Matsushita, Kyoko
Nakazawa, Kazuhiro
Clarke, Tracy E.
TI A SUZAKU SEARCH FOR NONTHERMAL EMISSION AT HARD X-RAY ENERGIES IN THE
COMA CLUSTER
SO ASTROPHYSICAL JOURNAL
LA English
DT Article
DE galaxies: clusters: general; galaxies: clusters: individual (Coma);
intergalactic medium; magnetic fields; radiation mechanisms:
non-thermal; X-rays: galaxies: clusters
ID GALAXY CLUSTERS; XMM-NEWTON; TEMPERATURE STRUCTURE;
SPATIAL-DISTRIBUTION; RADIO OBSERVATIONS; MAGNETIC-FIELD; SPECTRUM;
ELECTRONS; RADIATION; ACCELERATION
AB The brightest cluster radio halo known resides in the Coma cluster of galaxies. The relativistic electrons producing this diffuse synchrotron emission should also produce inverse Compton emission that becomes competitive with thermal emission from the intracluster medium (ICM) at hard X-ray energies. Thus far, claimed detections of this emission in Coma are controversial. We present a Suzaku HXD-PIN observation of the Coma cluster in order to nail down its nonthermal hard X-ray content. The contribution of thermal emission to the HXD-PIN spectrum is constrained by simultaneously fitting thermal and nonthermal models to it and a spatially equivalent spectrum derived from an XMM-Newton mosaic of the Coma field. We fail to find statistically significant evidence for nonthermal emission in the spectra which are better described by only a single-or multitemperature model for the ICM. Including systematic uncertainties, we derive a 90% upper limit on the flux of nonthermal emission of 6.0 x 10(-1)2 erg s(-1) cm(-2) (20-80 keV, for Gamma = 2.0), which implies a lower limit on the cluster-averaged magnetic field of B > 0.15 mu G. Our flux upper limit is 2.5 times lower than the detected nonthermal flux from RXTE and BeppoSAX. However, if the nonthermal hard X-ray emission in Coma is more spatially extended than the observed radio halo, the Suzaku HXD-PIN may miss some fraction of the emission. A detailed investigation indicates that similar to 50%-67% of the emission might go undetected, which could make our limit consistent with that of Rephaeli & Gruber and Fusco-Femiano et al. The thermal interpretation of the hard Coma spectrum is consistent with recent analyses of INTEGRAL and Swift data.
C1 [Wik, Daniel R.; Sarazin, Craig L.] Univ Virginia, Dept Astron, Charlottesville, VA 22904 USA.
[Finoguenov, Alexis] Max Planck Inst Extraterr Phys, D-85748 Garching, Germany.
[Finoguenov, Alexis] Univ Maryland Baltimore Cty, Ctr Space Sci Technol, Baltimore, MD 21250 USA.
[Matsushita, Kyoko] Tokyo Univ Sci, Dept Phys, Tokyo 162, Japan.
[Nakazawa, Kazuhiro] Univ Tokyo, Dept Phys, Tokyo 113, Japan.
[Clarke, Tracy E.] USN, Res Lab, Washington, DC 20375 USA.
[Clarke, Tracy E.] Interferometr Inc, Herndon, VA 20171 USA.
RP Wik, DR (reprint author), Univ Virginia, Dept Astron, POB 400325, Charlottesville, VA 22904 USA.
EM drw2x@virginia.edu
RI XRAY, SUZAKU/A-1808-2009
FU NASA [NNX06AI44G, NNX06AI37G, NNG05GM5OG]; XMM-Newton [NNX06AE76G];
Dupont Fellowship; Virginia Space Grant Consortium Fellowship
FX We thank W. Reich who kindly provided us with the Deiss et al. (1997)
radio image. We thank M. Ajello, G. Brunetti, F. Fusco-Femiano, S.
Molendi, and P. Rebusco for useful discussions. Also, we are grateful to
the referee for helpful comments that improved the paper. Support for
this work was provided by NASA Suzaku grants NNX06AI44G and NNX06AI37G
and XMM-Newton grant NNX06AE76G. D. R. W. was supported by a Dupont
Fellowship and a Virginia Space Grant Consortium Fellowship. A. F. was
partially supported by NASA NNG05GM5OG grant to UMBC. Basic research in
radio astronomy at the NRL is supported by 6.1 Base funding.
NR 71
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PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0004-637X
EI 1538-4357
J9 ASTROPHYS J
JI Astrophys. J.
PD MAY 10
PY 2009
VL 696
IS 2
BP 1700
EP 1711
DI 10.1088/0004-637X/696/2/1700
PG 12
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 441IO
UT WOS:000265762700056
ER
PT J
AU Rakowski, CE
Ghavamian, P
Laming, JM
AF Rakowski, Cara E.
Ghavamian, Parviz
Laming, J. Martin
TI THE H alpha DIAGNOSTIC OF ELECTRON HEATING: THE CASE OF DEM L71
SO ASTROPHYSICAL JOURNAL
LA English
DT Article
DE acceleration of particles; cosmic rays; ISM: individual (SNR DEM L71);
shock waves; supernova remnants
ID LARGE-MAGELLANIC-CLOUD; BALMER-DOMINATED SHOCKS; HIGH-RESOLUTION
SPECTROSCOPY; FAST COLLISIONLESS SHOCKS; TYCHOS SUPERNOVA REMNANT;
CYGNUS LOOP; COSMIC-RAYS; TEMPERATURE EQUILIBRATION; OPTICAL-EMISSION;
NOVA REMNANTS
AB Recently, the mechanisms and extent of immediate postshock heating of electrons at collisionless shocks have been under intense investigation. Several recent studies have suggested that the ratio of electron to proton temperature at the shock front scales approximately as the inverse square of the shock velocity. A specific interpretation of this dependence was first introduced by Ghavamian et al., who suggested electron heating by lower-hybrid waves in a cosmic ray (CR) precursor as a possible mechanism behind such a relationship. The best line diagnostics for the electron to proton temperature ratio behind collisionless shocks in partially neutral gas are the combination of broad and narrow H alpha lines emitted in the immediate vicinity of the shock front. In this work, we present extensive long-slit spectroscopy of the H alpha emission in the blast wave shock of supernova remnant DEM L71. We chose this remnant for two main reasons. First, the shock velocities in DEM L71 span the range of speeds where the electron to proton temperature ratio varies most rapidly with shock speed. Second, previous Fabry-Perot scans of the Ha line complex indicated broad-to-narrow flux ratios lower than existing models predicted, but the spectral coverage of those observations was not broad enough to reliably measure the background emission around the broad component H alpha line. Our new high-resolution (R greater than or similar to 1600) spectra of DEM L71 provide extensive coverage of the background near the H alpha line and confirm our earlier Fabry-Perot results of consistently low (less than or similar to 1) broad-to-narrow flux ratios. Here, we present results of these observations and also outline the first results from spectra of radiative portions of DEM L71. We compare our results to the latest models of H alpha profiles from collisionless shocks. We conclude that the most likely explanation for the low broad-to-narrow flux ratio is the ionization and excitation of neutrals by electrons heated in the extended CR precursor.
C1 [Rakowski, Cara E.] USN, Res Lab Code 7674R, Div Space Sci, Washington, DC 20375 USA.
[Ghavamian, Parviz] Space Telescope Sci Inst, Baltimore, MD 21218 USA.
[Laming, J. Martin] USN, Res Lab Code 7674L, Div Space Sci, Washington, DC 20375 USA.
RP Rakowski, CE (reprint author), USN, Res Lab Code 7674R, Div Space Sci, Washington, DC 20375 USA.
FU NASA LTSA [NNH06AD66I]; Chandra X-ray Observatory [NNM08AA22I]; Office
of Naval Research
FX C. E. R. would like to thank Vicki Tran and Karen Masters for obtaining
the E1 slit spectrum on the final night of their observing run. This
work was supported by NASA LTSA grant NNH06AD66I, Chandra X-ray
Observatory grant NNM08AA22I and by basic research funds of the Office
of Naval Research.
NR 35
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PI BRISTOL
PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND
SN 0004-637X
J9 ASTROPHYS J
JI Astrophys. J.
PD MAY 10
PY 2009
VL 696
IS 2
BP 2195
EP 2205
DI 10.1088/0004-637X/696/2/2195
PG 11
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 441IO
UT WOS:000265762700098
ER
PT J
AU Abdo, AA
Ackermann, M
Ajello, M
Atwood, WB
Axelsson, M
Baldini, L
Ballet, J
Barbiellini, G
Bastieri, D
Battelino, M
Baughman, BM
Bechtol, K
Bellazzini, R
Berenji, B
Blandford, RD
Bloom, ED
Bogaert, G
Bonamente, E
Borgland, AW
Bregeon, J
Brez, A
Brigida, M
Bruel, P
Burnett, TH
Caliandro, GA
Cameron, RA
Caraveo, PA
Carlson, P
Casandjian, JM
Cecchi, C
Charles, E
Chekhtman, A
Cheung, CC
Chiang, J
Ciprini, S
Claus, R
Cohen-Tanugi, J
Cominsky, LR
Conrad, J
Cutini, S
Dermer, CD
de Angelis, A
de Palma, F
Digel, SW
Di Bernardo, G
Silva, EDE
Drell, PS
Dubois, R
Dumora, D
Edmonds, Y
Farnier, C
Favuzzi, C
Focke, WB
Frailis, M
Fukazawa, Y
Funk, S
Fusco, P
Gaggero, D
Gargano, F
Gasparrini, D
Gehrels, N
Germani, S
Giebels, B
Giglietto, N
Giordano, F
Glanzman, T
Godfrey, G
Grasso, D
Grenier, IA
Grondin, MH
Grove, JE
Guillemot, L
Guiriec, S
Hanabata, Y
Harding, AK
Hartman, RC
Hayashida, M
Hays, E
Hughes, RE
Johannesson, G
Johnson, AS
Johnson, RP
Johnson, WN
Kamae, T
Katagiri, H
Kataoka, J
Kawai, N
Kerr, M
Knodlseder, J
Kocevski, D
Kuehn, F
Kuss, M
Lande, J
Latronico, L
Lemoine-Goumard, M
Longo, F
Loparco, F
Lott, B
Lovellette, MN
Lubrano, P
Madejski, GM
Makeev, A
Massai, MM
Mazziotta, MN
McConville, W
McEnery, JE
Meurer, C
Michelson, PF
Mitthumsiri, W
Mizuno, T
Moiseev, AA
Monte, C
Monzani, ME
Moretti, E
Morselli, A
Moskalenko, IV
Murgia, S
Nolan, PL
Norris, JP
Nuss, E
Ohsugi, T
Omodei, N
Orlando, E
Ormes, JF
Ozaki, M
Paneque, D
Panetta, JH
Parent, D
Pelassa, V
Pepe, M
Pesce-Rollins, M
Piron, F
Pohl, M
Porter, TA
Profumo, S
Raino, S
Rando, R
Razzano, M
Reimer, A
Reimer, O
Reposeur, T
Ritz, S
Rochester, LS
Rodriguez, AY
Romani, RW
Roth, M
Ryde, F
Sadrozinski, HFW
Sanchez, D
Sander, A
Saz Parkinson, PM
Scargle, JD
Schalk, TL
Sellerholm, A
Sgro, C
Smith, DA
Smith, PD
Spandre, G
Spinelli, P
Starck, JL
Stephens, TE
Strickman, MS
Strong, AW
Suson, DJ
Tajima, H
Takahashi, H
Takahashi, T
Tanaka, T
Thayer, JB
Thayer, JG
Thompson, DJ
Tibaldo, L
Tibolla, O
Torres, DF
Tosti, G
Tramacere, A
Uchiyama, Y
Usher, TL
Van Etten, A
Vasileiou, V
Vilchez, N
Vitale, V
Waite, AP
Wallace, E
Wang, P
Winer, BL
Wood, KS
Ylinen, T
Ziegler, M
AF Abdo, A. A.
Ackermann, M.
Ajello, M.
Atwood, W. B.
Axelsson, M.
Baldini, L.
Ballet, J.
Barbiellini, G.
Bastieri, D.
Battelino, M.
Baughman, B. M.
Bechtol, K.
Bellazzini, R.
Berenji, B.
Blandford, R. D.
Bloom, E. D.
Bogaert, G.
Bonamente, E.
Borgland, A. W.
Bregeon, J.
Brez, A.
Brigida, M.
Bruel, P.
Burnett, T. H.
Caliandro, G. A.
Cameron, R. A.
Caraveo, P. A.
Carlson, P.
Casandjian, J. M.
Cecchi, C.
Charles, E.
Chekhtman, A.
Cheung, C. C.
Chiang, J.
Ciprini, S.
Claus, R.
Cohen-Tanugi, J.
Cominsky, L. R.
Conrad, J.
Cutini, S.
Dermer, C. D.
de Angelis, A.
de Palma, F.
Digel, S. W.
Di Bernardo, G.
do Couto e Silva, E.
Drell, P. S.
Dubois, R.
Dumora, D.
Edmonds, Y.
Farnier, C.
Favuzzi, C.
Focke, W. B.
Frailis, M.
Fukazawa, Y.
Funk, S.
Fusco, P.
Gaggero, D.
Gargano, F.
Gasparrini, D.
Gehrels, N.
Germani, S.
Giebels, B.
Giglietto, N.
Giordano, F.
Glanzman, T.
Godfrey, G.
Grasso, D.
Grenier, I. A.
Grondin, M. -H.
Grove, J. E.
Guillemot, L.
Guiriec, S.
Hanabata, Y.
Harding, A. K.
Hartman, R. C.
Hayashida, M.
Hays, E.
Hughes, R. E.
Johannesson, G.
Johnson, A. S.
Johnson, R. P.
Johnson, W. N.
Kamae, T.
Katagiri, H.
Kataoka, J.
Kawai, N.
Kerr, M.
Knoedlseder, J.
Kocevski, D.
Kuehn, F.
Kuss, M.
Lande, J.
Latronico, L.
Lemoine-Goumard, M.
Longo, F.
Loparco, F.
Lott, B.
Lovellette, M. N.
Lubrano, P.
Madejski, G. M.
Makeev, A.
Massai, M. M.
Mazziotta, M. N.
McConville, W.
McEnery, J. E.
Meurer, C.
Michelson, P. F.
Mitthumsiri, W.
Mizuno, T.
Moiseev, A. A.
Monte, C.
Monzani, M. E.
Moretti, E.
Morselli, A.
Moskalenko, I. V.
Murgia, S.
Nolan, P. L.
Norris, J. P.
Nuss, E.
Ohsugi, T.
Omodei, N.
Orlando, E.
Ormes, J. F.
Ozaki, M.
Paneque, D.
Panetta, J. H.
Parent, D.
Pelassa, V.
Pepe, M.
Pesce-Rollins, M.
Piron, F.
Pohl, M.
Porter, T. A.
Profumo, S.
Raino, S.
Rando, R.
Razzano, M.
Reimer, A.
Reimer, O.
Reposeur, T.
Ritz, S.
Rochester, L. S.
Rodriguez, A. Y.
Romani, R. W.
Roth, M.
Ryde, F.
Sadrozinski, H. F. -W.
Sanchez, D.
Sander, A.
Saz Parkinson, P. M.
Scargle, J. D.
Schalk, T. L.
Sellerholm, A.
Sgro, C.
Smith, D. A.
Smith, P. D.
Spandre, G.
Spinelli, P.
Starck, J. -L.
Stephens, T. E.
Strickman, M. S.
Strong, A. W.
Suson, D. J.
Tajima, H.
Takahashi, H.
Takahashi, T.
Tanaka, T.
Thayer, J. B.
Thayer, J. G.
Thompson, D. J.
Tibaldo, L.
Tibolla, O.
Torres, D. F.
Tosti, G.
Tramacere, A.
Uchiyama, Y.
Usher, T. L.
Van Etten, A.
Vasileiou, V.
Vilchez, N.
Vitale, V.
Waite, A. P.
Wallace, E.
Wang, P.
Winer, B. L.
Wood, K. S.
Ylinen, T.
Ziegler, M.
TI Measurement of the Cosmic Ray e(+)+e(-) Spectrum from 20 GeV to 1 TeV
with the Fermi Large Area Telescope
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID SUPERNOVA-REMNANTS; GAMMA-RAYS; ELECTRONS; ENERGIES
AB Designed as a high-sensitivity gamma-ray observatory, the Fermi Large Area Telescope is also an electron detector with a large acceptance exceeding 2 m(2) sr at 300 GeV. Building on the gamma-ray analysis, we have developed an efficient electron detection strategy which provides sufficient background rejection for measurement of the steeply falling electron spectrum up to 1 TeV. Our high precision data show that the electron spectrum falls with energy as E-3.0 and does not exhibit prominent spectral features. Interpretations in terms of a conventional diffusive model as well as a potential local extra component are briefly discussed.
C1 [Abdo, A. A.] CNR, Ottawa, ON, Canada.
[Abdo, A. A.; Chekhtman, A.; Dermer, C. D.; Grove, J. E.; Johnson, W. N.; Lovellette, M. N.; Makeev, A.; Strickman, M. S.; Wood, K. S.] USN, Res Lab, Div Space Sci, Washington, DC 20375 USA.
[Ackermann, M.; Ajello, M.; Bechtol, K.; Berenji, B.; Blandford, R. D.; Bloom, E. D.; Borgland, A. W.; Cameron, R. A.; Charles, E.; Chiang, J.; Claus, R.; Digel, S. W.; do Couto e Silva, E.; Drell, P. S.; Dubois, R.; Edmonds, Y.; Focke, W. B.; Funk, S.; Glanzman, T.; Godfrey, G.; Hayashida, M.; Johannesson, G.; Johnson, A. S.; Kamae, T.; Kocevski, D.; Lande, J.; Madejski, G. M.; Michelson, P. F.; Mitthumsiri, W.; Monzani, M. E.; Moskalenko, I. V.; Murgia, S.; Nolan, P. L.; Paneque, D.; Panetta, J. H.; Reimer, A.; Reimer, O.; Rochester, L. S.; Romani, R. W.; Tajima, H.; Tanaka, T.; Thayer, J. B.; Thayer, J. G.; Tramacere, A.; Uchiyama, Y.; Usher, T. L.; Van Etten, A.; Waite, A. P.; Wang, P.] Stanford Univ, WW Hansen Expt Phys Lab, Kavli Inst Particle Astrophys & Cosmol, Dept Phys, Stanford, CA 94305 USA.
[Ackermann, M.; Ajello, M.; Bechtol, K.; Berenji, B.; Blandford, R. D.; Bloom, E. D.; Borgland, A. W.; Cameron, R. A.; Charles, E.; Chiang, J.; Claus, R.; Digel, S. W.; do Couto e Silva, E.; Drell, P. S.; Dubois, R.; Edmonds, Y.; Focke, W. B.; Funk, S.; Glanzman, T.; Godfrey, G.; Hayashida, M.; Johannesson, G.; Johnson, A. S.; Kamae, T.; Kocevski, D.; Lande, J.; Madejski, G. M.; Michelson, P. F.; Mitthumsiri, W.; Monzani, M. E.; Moskalenko, I. V.; Murgia, S.; Nolan, P. L.; Paneque, D.; Panetta, J. H.; Reimer, A.; Reimer, O.; Rochester, L. S.; Romani, R. W.; Tajima, H.; Tanaka, T.; Thayer, J. B.; Thayer, J. G.; Tramacere, A.; Uchiyama, Y.; Usher, T. L.; Van Etten, A.; Waite, A. P.; Wang, P.] Stanford Univ, SLAC Natl Accelerator Lab, Stanford, CA 94305 USA.
[Atwood, W. B.; Johnson, R. P.; Porter, T. A.; Profumo, S.; Sadrozinski, H. F. -W.; Saz Parkinson, P. M.; Schalk, T. L.; Ziegler, M.] Univ Calif Santa Cruz, Santa Cruz Inst Particle Phys, Dept Phys, Santa Cruz, CA 95064 USA.
[Atwood, W. B.; Johnson, R. P.; Porter, T. A.; Profumo, S.; Sadrozinski, H. F. -W.; Saz Parkinson, P. M.; Schalk, T. L.; Ziegler, M.] Univ Calif Santa Cruz, Dept Astron & Astrophys, Santa Cruz, CA 95064 USA.
[Axelsson, M.; Battelino, M.; Carlson, P.; Conrad, J.; Meurer, C.; Ryde, F.; Sellerholm, A.; Ylinen, T.] Oskar Klein Ctr Cosmo Particle Phys, SE-10691 Stockholm, Sweden.
[Axelsson, M.] Stockholm Univ, Dept Astron, SE-10691 Stockholm, Sweden.
[Baldini, L.; Bellazzini, R.; Bregeon, J.; Brez, A.; Di Bernardo, G.; Gaggero, D.; Grasso, D.; Kuss, M.; Latronico, L.; Massai, M. M.; Omodei, N.; Pesce-Rollins, M.; Razzano, M.; Sgro, C.; Spandre, G.] Ist Nazl Fis Nucl, Sez Pisa, I-56127 Pisa, Italy.
[Ballet, J.; Casandjian, J. M.; Grenier, I. A.; Starck, J. -L.] Univ Paris Diderot, CEA Saclay, Lab AIM, CEA IRFU CNRS,Serv Astrophys, F-91191 Gif Sur Yvette, France.
[Barbiellini, G.; Longo, F.; Moretti, E.] Ist Nazl Fis Nucl, Sez Trieste, I-34127 Trieste, Italy.
[Barbiellini, G.; Longo, F.; Moretti, E.] Univ Trieste, Dipartimento Fis, I-34127 Trieste, Italy.
[Bastieri, D.; Rando, R.; Tibaldo, L.] Ist Nazl Fis Nucl, Sez Padova, I-35131 Padua, Italy.
[Bastieri, D.; Rando, R.; Tibaldo, L.] Univ Padua, Dipartimento Fis G Galilei, I-35131 Padua, Italy.
[Battelino, M.; Carlson, P.; Conrad, J.; Ryde, F.; Ylinen, T.] Royal Inst Technol KTH, Dept Phys, SE-10691 Stockholm, Sweden.
[Baughman, B. M.; Hughes, R. E.; Kuehn, F.; Sander, A.; Smith, P. D.; Winer, B. L.] Ohio State Univ, Dept Phys, Ctr Cosmol & Astroparticle Phys, Columbus, OH 43210 USA.
[Bogaert, G.; Bruel, P.; Giebels, B.; Sanchez, D.] Ecole Polytech, CNRS, IN2P3, Lab Leprince Ringuet, F-91128 Palaiseau, France.
[Bonamente, E.; Cecchi, C.; Ciprini, S.; Germani, S.; Lubrano, P.; Pepe, M.; Tosti, G.] Ist Nazl Fis Nucl, Sez Perugia, I-06123 Perugia, Italy.
[Bonamente, E.; Cecchi, C.; Ciprini, S.; Germani, S.; Lubrano, P.; Pepe, M.; Tosti, G.] Univ Perugia, Dipartimento Fis, I-06123 Perugia, Italy.
[Brigida, M.; Caliandro, G. A.; de Palma, F.; Favuzzi, C.; Fusco, P.; Giglietto, N.; Giordano, F.; Loparco, F.; Monte, C.; Raino, S.; Spinelli, P.] M Merlin Univ, Dipartimento Fis, I-70126 Bari, Italy.
[Brigida, M.; Caliandro, G. A.; de Palma, F.; Favuzzi, C.; Fusco, P.; Gargano, F.; Giglietto, N.; Giordano, F.; Loparco, F.; Mazziotta, M. N.; Monte, C.; Raino, S.; Spinelli, P.] Ist Nazl Fis Nucl, Sez Bari, I-70126 Bari, Italy.
[Burnett, T. H.; Kerr, M.; Roth, M.; Wallace, E.] Univ Washington, Dept Phys, Seattle, WA 98195 USA.
[Brigida, M.; Caliandro, G. A.; de Palma, F.; Favuzzi, C.; Fusco, P.; Giglietto, N.; Giordano, F.; Loparco, F.; Monte, C.; Raino, S.; Spinelli, P.] Politecn Bari, I-70126 Bari, Italy.
[Caraveo, P. A.] INAF Ist Astrofis Spaziale & Fis Cosm, I-20133 Milan, Italy.
[Chekhtman, A.; Makeev, A.] George Mason Univ, Fairfax, VA 22030 USA.
[Cheung, C. C.; Gehrels, N.; Harding, A. K.; Hartman, R. C.; Hays, E.; McConville, W.; McEnery, J. E.; Ritz, S.; Stephens, T. E.; Thompson, D. J.; Vasileiou, V.] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA.
[Cohen-Tanugi, J.; Farnier, C.; Nuss, E.; Pelassa, V.; Piron, F.] Univ Montpellier 2, CNRS, IN2P3, Lab Phys Theor & Astroparticules, Montpellier, France.
[Cominsky, L. R.] Sonoma State Univ, Dept Phys & Astron, Rohnert Pk, CA 94928 USA.
[Conrad, J.; Meurer, C.; Sellerholm, A.] Stockholm Univ, Dept Phys, SE-10691 Stockholm, Sweden.
[Cutini, S.; Gasparrini, D.] ASI, Sci Data Ctr, I-00044 Frascati, Roma, Italy.
[de Angelis, A.; Frailis, M.] Univ Udine, Dipartimento Fis, I-33100 Udine, Italy.
[de Angelis, A.; Frailis, M.] Ist Nazl Fis Nucl, Sez Trieste, Grp Collegato Udine, I-33100 Udine, Italy.
[Dumora, D.; Grondin, M. -H.; Guillemot, L.; Lemoine-Goumard, M.; Lott, B.; Norris, J. P.; Parent, D.; Reposeur, T.; Smith, D. A.] Ctr Etud Nucl Bordeaux Gradignan, CNRS, IN2P3, UMR 5797, F-33175 Gradignan, France.
[Dumora, D.; Grondin, M. -H.; Guillemot, L.; Lemoine-Goumard, M.; Lott, B.; Norris, J. P.; Parent, D.; Reposeur, T.; Smith, D. A.] Univ Bordeaux, Ctr Etud Nucl Bordeaux Gradignan, UMR 5797, F-33175 Gradignan, France.
[Fukazawa, Y.; Hanabata, Y.; Katagiri, H.; Mizuno, T.; Ohsugi, T.; Takahashi, H.] Hiroshima Univ, Dept Phys Sci, Hiroshima 7398526, Japan.
[Gehrels, N.; McConville, W.; Moiseev, A. A.; Ritz, S.] Univ Maryland, College Pk, MD 20742 USA.
[Guiriec, S.] Univ Alabama, Huntsville, AL 35899 USA.
[Kataoka, J.] Waseda Univ, Shinjuku Ku, Tokyo 1698050, Japan.
[Kawai, N.] RIKEN, Cosm Radiat Lab, Inst Phys & Chem Res, Wako, Saitama 3510198, Japan.
[Kawai, N.] Tokyo Inst Technol, Dept Phys, Meguro, Tokyo 1528551, Japan.
[Knoedlseder, J.; Vilchez, N.] CNRS UPS, Ctr Etud Spatiale Rayonnements, F-31028 Toulouse 4, France.
[Moiseev, A. A.] NASA, Goddard Space Flight Ctr, CRESST, Greenbelt, MD 20771 USA.
[Morselli, A.; Vitale, V.] Ist Nazl Fis Nucl, Sez Roma Tor Vergata, I-00133 Rome, Italy.
[Ormes, J. F.] Univ Denver, Dept Phys & Astron, Denver, CO 80208 USA.
[Orlando, E.; Strong, A. W.] Max Planck Inst Extraterr Phys, D-85748 Garching, Germany.
[Ozaki, M.; Takahashi, T.] JAXA, Inst Space & Astronaut Sci, Sagamihara, Kanagawa 2298510, Japan.
[Pohl, M.] Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA.
[Rodriguez, A. Y.; Torres, D. F.] CSIC, IEEC, Inst Ciencies Espai, Barcelona 08193, Spain.
[Scargle, J. D.] NASA, Ames Res Ctr, Div Space Sci, Moffett Field, CA 94035 USA.
[Suson, D. J.] Purdue Univ Calumet, Dept Chem & Phys, Hammond, IN 46323 USA.
[Tibolla, O.] Max Planck Inst Kernphys, D-69029 Heidelberg, Germany.
[Torres, D. F.] ICREA, Barcelona, Spain.
[Tramacere, A.] CIFS, I-10133 Turin, Italy.
[Vasileiou, V.] Univ Maryland, Baltimore, MD 21250 USA.
[Vitale, V.] Univ Roma Tor Vergata, Dipartimento Fis, I-00133 Rome, Italy.
[Ylinen, T.] Univ Kalmar, Sch Pure & Appl Nat Sci, SE-39182 Kalmar, Sweden.
RP Abdo, AA (reprint author), CNR, Ottawa, ON, Canada.
EM luca.latronico@pi.infn.it; Alexander.A.Moiseev@nasa.gov
RI Mazziotta, Mario /O-8867-2015; Sgro, Carmelo/K-3395-2016; Torres,
Diego/O-9422-2016; Orlando, E/R-5594-2016; Kuss, Michael/H-8959-2012;
lubrano, pasquale/F-7269-2012; Morselli, Aldo/G-6769-2011; Ozaki,
Masanobu/K-1165-2013; Rando, Riccardo/M-7179-2013; Hays,
Elizabeth/D-3257-2012; Johnson, Neil/G-3309-2014; Reimer,
Olaf/A-3117-2013; Funk, Stefan/B-7629-2015; Loparco,
Francesco/O-8847-2015; Johannesson, Gudlaugur/O-8741-2015; Gargano,
Fabio/O-8934-2015; Moskalenko, Igor/A-1301-2007; Starck,
Jean-Luc/D-9467-2011; Thompson, David/D-2939-2012; Grasso,
Dario/I-2440-2012; giglietto, nicola/I-8951-2012; Tosti,
Gino/E-9976-2013; Saz Parkinson, Pablo Miguel/I-7980-2013; Harding,
Alice/D-3160-2012; Gehrels, Neil/D-2971-2012; McEnery,
Julie/D-6612-2012; Baldini, Luca/E-5396-2012; Nolan,
Patrick/A-5582-2009;
OI Mazziotta, Mario /0000-0001-9325-4672; Torres,
Diego/0000-0002-1522-9065; Rando, Riccardo/0000-0001-6992-818X;
Stephens, Thomas/0000-0003-3065-6871; Sgro',
Carmelo/0000-0001-5676-6214; De Angelis, Alessandro/0000-0002-3288-2517;
Frailis, Marco/0000-0002-7400-2135; Caraveo,
Patrizia/0000-0003-2478-8018; Bastieri, Denis/0000-0002-6954-8862;
Omodei, Nicola/0000-0002-5448-7577; lubrano,
pasquale/0000-0003-0221-4806; Morselli, Aldo/0000-0002-7704-9553;
Reimer, Olaf/0000-0001-6953-1385; Funk, Stefan/0000-0002-2012-0080;
Loparco, Francesco/0000-0002-1173-5673; Johannesson,
Gudlaugur/0000-0003-1458-7036; Gargano, Fabio/0000-0002-5055-6395;
Moskalenko, Igor/0000-0001-6141-458X; Starck,
Jean-Luc/0000-0003-2177-7794; Thompson, David/0000-0001-5217-9135;
Grasso, Dario/0000-0001-7761-7242; giglietto,
nicola/0000-0002-9021-2888; Pesce-Rollins, Melissa/0000-0003-1790-8018;
Cutini, Sara/0000-0002-1271-2924; Berenji, Bijan/0000-0002-4551-772X;
Gasparrini, Dario/0000-0002-5064-9495; Tramacere,
Andrea/0000-0002-8186-3793; Baldini, Luca/0000-0002-9785-7726
FU NASA; DOE; CEA/Irfu and IN2P3/CNRS in France; ASI; INFN; MEXT; KEK; JAXA
in Japan; K.A. Wallenberg Foundation; Swedish Research Council; National
Space Board in Sweden
FX The Fermi LAT Collaboration acknowledges support from a number of
agencies and institutes for development and the operation of the LAT as
well as scientific data analysis. These include NASA and DOE in the
United States, CEA/Irfu and IN2P3/CNRS in France, ASI, INFN and INAF in
Italy, MEXT, KEK, and JAXA in Japan, and the K.A. Wallenberg Foundation,
the Swedish Research Council, and the National Space Board in Sweden.
NR 28
TC 689
Z9 699
U1 1
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 MAY 8
PY 2009
VL 102
IS 18
AR 181101
DI 10.1103/PhysRevLett.102.181101
PG 6
WC Physics, Multidisciplinary
SC Physics
GA 443ZF
UT WOS:000265948600011
PM 19518855
ER
PT J
AU Wei, E
Justh, EW
Krishnaprasad, PS
AF Wei, Ermin
Justh, Eric W.
Krishnaprasad, P. S.
TI Pursuit and an evolutionary game
SO PROCEEDINGS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING
SCIENCES
LA English
DT Article
DE pursuit; natural frames; motion camouflage; evolutionary game;
replicator dynamics; geometry of simplex
ID MOTION CAMOUFLAGE; DYNAMICS; STRATEGIES
AB Pursuit is a familiar mechanical activity that humans and animals engage in athletes chasing balls, predators seeking prey and insects manoeuvring in aerial territorial battles. In this paper, we discuss and compare strategies for pursuit, the occurrence in nature of a strategy known as motion camouflage, and some evolutionary arguments to support claims of prevalence of this strategy, as opposed to alternatives. We discuss feedback laws for a pursuer to realize motion camouflage, as well as two alternative strategies. We then set up a discrete-time evolutionary game to model competition among these strategies. This leads to a dynamics in the probability simplex in three dimensions, which captures the mean-field aspects of the evolutionary game. The analysis of this dynamics as an ascent equation solving a linear programming problem is consistent with observed behaviour in Monte Carlo experiments, and lends support to an evolutionary basis for prevalence of motion camouflage.
C1 [Krishnaprasad, P. S.] Univ Maryland, Syst Res Inst, College Pk, MD 20742 USA.
[Krishnaprasad, P. S.] Univ Maryland, Dept Elect & Comp Engn, College Pk, MD 20742 USA.
[Justh, Eric W.] USN, Res Lab, Washington, DC 20375 USA.
[Wei, Ermin] MIT, Dept Elect Engn & Comp Sci, Cambridge, MA 02139 USA.
RP Krishnaprasad, PS (reprint author), Univ Maryland, Syst Res Inst, College Pk, MD 20742 USA.
EM krishna@isr.umd.edu
FU Air Force Office of Scientific Research [FA9550710446]; Army Research
Office [W911NF0610325]; ODDRE MURI2007 [N000140710734]; NSF-NIH
Collaborative Research in Computational Neuroscience Program; NIH-NIBIB
[1 R01 EB004750-01]; Office of Naval Research and a University of
Maryland Summer Research Scholarship
FX This research was supported in part by the Air Force Office of
Scientific Research under AFOSR grant FA9550710446, the Army Research
Office under ARO grant W911NF0610325, the ODDR&E MURI2007 Program grant
N000140710734 (through the Office of Naval Research), the NSF-NIH
Collaborative Research in Computational Neuroscience Program (CRCNS2004)
NIH-NIBIB grant 1 R01 EB004750-01, the Office of Naval Research and a
University of Maryland Summer Research Scholarship. The authors would
like to gratefully acknowledge collaborations with Dr Kaushik Ghose, Dr
Timothy Horiuchi and Dr Cynthia Moss, which led to the questions
addressed in this paper.
NR 30
TC 22
Z9 22
U1 2
U2 8
PU ROYAL SOC
PI LONDON
PA 6-9 CARLTON HOUSE TERRACE, LONDON SW1Y 5AG, ENGLAND
SN 1364-5021
J9 P R SOC A
JI Proc. R. Soc. A-Math. Phys. Eng. Sci.
PD MAY 8
PY 2009
VL 465
IS 2105
BP 1539
EP 1559
DI 10.1098/rspa.2008.0480
PG 21
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA 423QV
UT WOS:000264511700011
ER
PT J
AU Wettergren, TA
Costa, R
AF Wettergren, Thomas A.
Costa, Russell
TI Optimal Placement of Distributed Sensors Against Moving Targets
SO ACM TRANSACTIONS ON SENSOR NETWORKS
LA English
DT Article
DE Algorithms; Design; Performance; Sensor networks; optimization; coverage
ID NETWORKS; COVERAGE; DEPLOYMENT; ALGORITHM
AB This article addresses the problem of deploying a sparse network of sensors for surveillance of moving targets. The sensor networks of interest consist of sensors which perform independent binary detection on a target, and report detections to a central node for fusion. An optimization framework is developed for placement of sensors within a bounded search region, given sensor performance characteristics, prior information on anticipated target characteristics, and a distributed detection criteria. Individual sensor performance is represented parametrically as are priors on target dynamics. Several numerical examples are included that illustrate the utility of the optimization approach.
C1 [Wettergren, Thomas A.; Costa, Russell] USN, Undersea Warfare Ctr, Newport, RI 02841 USA.
RP Wettergren, TA (reprint author), USN, Undersea Warfare Ctr, 1176 Howell St, Newport, RI 02841 USA.
EM t.a.wettergren@ieee.org; russell.costa@navy.mil
OI Wettergren, Thomas/0000-0002-6623-8412
FU Office of Naval Research [321MS]; Naval Undersea Warfare Center
FX This work was supported by the Office of Naval Research Code 321MS and
by the In- House Laboratory Independent Research Program of the Naval
Undersea Warfare Center.
NR 33
TC 17
Z9 17
U1 1
U2 3
PU ASSOC COMPUTING MACHINERY
PI NEW YORK
PA 2 PENN PLAZA, STE 701, NEW YORK, NY 10121-0701 USA
SN 1550-4859
J9 ACM T SENSOR NETWORK
JI ACM Trans. Sens. Netw.
PD MAY
PY 2009
VL 5
IS 3
AR 26
DI 10.1145/1525856.1525864
PG 25
WC Computer Science, Information Systems; Telecommunications
SC Computer Science; Telecommunications
GA 458KN
UT WOS:000267018200008
ER
PT J
AU Zhang, ZH
Zhou, MY
Zhong, SR
Lenschow, D
Wang, Q
AF Zhang Zhanhai
Zhou Mingyu
Zhong, Sharon
Lenschow, Donald H.
Wang, Qing
TI Parameterizations of the daytime friction velocity, temperature scale,
and upslope flow over gently inclined terrain in calm synoptic
conditions
SO ADVANCES IN ATMOSPHERIC SCIENCES
LA English
DT Article
DE friction velocity; temperature scale; slope terrain; flux-profile
relationship; upslope flow
ID ATMOSPHERIC BOUNDARY-LAYER; EDDY EXCHANGE COEFFICIENT; MODELING
DISPERSION; WIND SYSTEMS; URBAN AREAS; FLUXES; VALLEY; HEAT
AB A set of new parameterizations for the friction velocity and temperature scale over gently sloped terrain and in calm synoptic conditions are theoretically derived. The friction velocity is found to be proportional to the product of the square root of the total accumulated heating in the boundary layer and the sinusoidal function of the slope angle, while the temperature scale is proportional to the product of the boundary layer depth, the sinusoidal function of the slope angle and the potential temperature gradient in the free atmosphere. Using the new friction velocity parameterization, together with a parameterization of eddy diffusivity and an initial potential temperature profile around sunrise, an improved parameterization for the thermally induced upslope flow profile is derived by solving the Prandtl equations. The upslope flow profile is found to be simply proportional to the friction velocity.
C1 [Zhang Zhanhai; Zhou Mingyu; Zhong, Sharon] Polar Res Inst China, Key Lab Polar Sci, Shanghai 200136, Peoples R China.
[Zhang Zhanhai; Zhou Mingyu] Chinese Acad Sci, Inst Atmospher Phys, State Key Lab Atmospher Boundary Layer Phys & Atm, Beijing 100029, Peoples R China.
[Zhong, Sharon] Michigan State Univ, Dept Geog, E Lansing, MI 48824 USA.
[Lenschow, Donald H.] Natl Ctr Atmospher Res, Boulder, CO 80307 USA.
[Wang, Qing] USN, Dept Meteorol, Postgrad Sch, Monterey, CA 93943 USA.
RP Zhou, MY (reprint author), Polar Res Inst China, Key Lab Polar Sci, Shanghai 200136, Peoples R China.
EM mingyuzhou@yahoo.com
RI AAS, AAS/C-2949-2014;
OI LENSCHOW, DONALD/0000-0003-4353-0098
NR 28
TC 0
Z9 0
U1 1
U2 2
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 2009
VL 26
IS 3
BP 577
EP 584
DI 10.1007/s00376-009-0577-z
PG 8
WC Meteorology & Atmospheric Sciences
SC Meteorology & Atmospheric Sciences
GA 443MR
UT WOS:000265914800019
ER
PT J
AU Cole, S
Arnold, M
Sanderson, A
Cupp, C
AF Cole, Stephanie
Arnold, Michelle
Sanderson, Alicia
Cupp, Craig
TI Pregnancy During Otolaryngology Residency: Experience and
Recommendations
SO AMERICAN SURGEON
LA English
DT Article
ID PHYSICIANS; POLICIES
AB Pregnancy during graduate medical training became a pertinent issue in the United States during the 10-year interval between 1992 and 2002 as the number of female residents trended steadily upward to over 25 per cent. Surgical training programs characteristically present unique challenges and stressors for all trainees, and pregnancy introduces additional physical, professional, and emotional demands for the pregnant woman and her coworkers. A qualitative study was performed using in-person interviews of female otolaryngology residents who had given birth within the previous 12 months. Items addressed included the pregnancy course and its complications, specific stressors during and after pregnancy, and solutions implemented by the resident and her program director. Reactions and level of support from coworkers were also discussed. Five pregnancies were reported among three residents interviewed. One resident experienced preterm delivery, which necessitated a week-long stay in the neonatal intensive care unit for her infant. Another had chorioamnionitis during delivery of two infants. One child had low birth weight. The third resident had a miscarriage during the first trimester of her first pregnancy and sustained a minor head injury after fainting in the operating room during her second pregnancy. Overall, long hours, unpredictable work demands, and guilt over colleagues' increased workloads and altered schedules were noted as significant sources of stress among these residents; the women also described high expectations of themselves, along with misgivings over their ability to balance pregnancy and parenthood with career demands. The most significant postpartum stress indicator was the matter of child care, especially as it related to finding adequate coverage for on-call periods ranging from 3 to 14 days per month. Maintaining breastfeeding was an additional concern in the postpartum period. Pregnancy during surgical residency is a significant source of conflict for the pregnant resident and her colleagues. Our study illustrates how program directors can pre-emptively address challenges this event presents. When policies on maternity leave, call issues during pregnancy, and flexible rotation schedules are in place before pregnancy occurs, the process may be smoother and more rewarding for all involved.
C1 [Cole, Stephanie; Arnold, Michelle; Sanderson, Alicia; Cupp, Craig] USN, Med Ctr, Dept Otolaryngol, San Diego, CA 92134 USA.
RP Cupp, C (reprint author), USN, Med Ctr, Dept Otolaryngol Head & Neck Surg, 34800 Bob Wilson Dr, San Diego, CA 92134 USA.
EM craig.cupp@med.navy.mil
NR 13
TC 13
Z9 13
U1 0
U2 3
PU SOUTHEASTERN SURGICAL CONGRESS
PI ATLANTA
PA 141 WEST WIEUCA RD, STE B100, ATLANTA, GA 30342 USA
SN 0003-1348
J9 AM SURGEON
JI Am. Surg.
PD MAY
PY 2009
VL 75
IS 5
BP 411
EP 415
PG 5
WC Surgery
SC Surgery
GA 436OO
UT WOS:000265423900012
PM 19445293
ER
PT J
AU Wojciechowski, JR
Shriver-Lake, LC
Yamaguchi, MY
Fureder, E
Pieler, R
Schamesberger, M
Winder, C
Prall, HJ
Sonnleitner, M
Ligler, FS
AF Wojciechowski, Jason R.
Shriver-Lake, Lisa C.
Yamaguchi, Mariko Y.
Fuereder, Erwin
Pieler, Roland
Schamesberger, Martin
Winder, Christoph
Prall, Hans Juergen
Sonnleitner, Max
Ligler, Frances S.
TI Organic Photodiodes for Biosensor Miniaturization
SO ANALYTICAL CHEMISTRY
LA English
DT Article
ID STAPHYLOCOCCAL-ENTEROTOXIN-B; ARRAY BIOSENSOR; DEVICES; DETECTORS;
PROGRESS; FUTURE; DIODES; FOOD
AB Biosensors have successfully demonstxated the capability to detect multiple pathogens simultaneously kit very low levels. Miniaturization of biosensors is essential for use in the field or at die point of care. While microfluidic systems reduce the footprint for biochemical processing devices and electronic components are continually becoming smaller, optical components suitable for integration-such as LEDs and CMOS chips-are generally still too expensive for disposable components. This paper describes the integration of polymer diodes onto a biosensor chip to create a disposable device that includes both the detector and the sensing surface coated,with immobilized capture antibody. We performed a chemiluminescence immunoassay on the OPD substrate and measured the results using a hand-held reader attached to a laptop computer. The miniaturized biosensor with the disposable slide including the organic photodiode detected Staphylococcal enterotoxin B at concentrations as low as 0.5 ng/mL.
C1 [Wojciechowski, Jason R.; Shriver-Lake, Lisa C.; Yamaguchi, Mariko Y.; Ligler, Frances S.] USN, Res Lab, Washington, DC 20375 USA.
[Fuereder, Erwin; Pieler, Roland; Schamesberger, Martin; Winder, Christoph; Prall, Hans Juergen; Sonnleitner, Max] Nanoldent Technol AG, A-4020 Linz, Austria.
RP Ligler, FS (reprint author), USN, Res Lab, 4555 Overlook Ave SW, Washington, DC 20375 USA.
EM frances.ligler@nrl.navy.mil
FU Defense Advanced Research Project Agency (DARPA) [11F000113]
FX This work was supported by Defense Advanced Research Project Agency
(DARPA) seed grant 11F000113. The views expressed here are those of the
authors and do not represent those of the U.S. Navy, the U.S. Department
of Defense (DOD), or the U.S. Government.
NR 23
TC 34
Z9 34
U1 1
U2 28
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0003-2700
J9 ANAL CHEM
JI Anal. Chem.
PD MAY 1
PY 2009
VL 81
IS 9
BP 3455
EP 3461
DI 10.1021/ac8027323
PG 7
WC Chemistry, Analytical
SC Chemistry
GA 439MY
UT WOS:000265632400036
PM 19331380
ER
PT J
AU Bacon, DJ
McCollum, AM
Griffing, SM
Salas, C
Soberon, V
Santolalla, M
Haley, R
Tsukayama, P
Lucas, C
Escalante, AA
Udhayakumar, V
AF Bacon, David J.
McCollum, Andrea M.
Griffing, Sean M.
Salas, Carola
Soberon, Valeria
Santolalla, Meddly
Haley, Ryan
Tsukayama, Pablo
Lucas, Carmen
Escalante, Ananias A.
Udhayakumar, Venkatachalam
TI Dynamics of Malaria Drug Resistance Patterns in the Amazon Basin Region
following Changes in Peruvian National Treatment Policy for
Uncomplicated Malaria
SO ANTIMICROBIAL AGENTS AND CHEMOTHERAPY
LA English
DT Article
ID PLASMODIUM-FALCIPARUM MALARIA; CHLOROQUINE-RESISTANCE;
DIHYDROFOLATE-REDUCTASE; SULFADOXINE-PYRIMETHAMINE; SOUTH-AMERICA;
DIHYDROPTEROATE SYNTHASE; ANTIMALARIAL RESISTANCE; MULTIDRUG-RESISTANCE;
PFCRT POLYMORPHISM; SELECTIVE SWEEPS
AB Monitoring changes in the frequencies of drug-resistant and -sensitive genotypes can facilitate in vivo clinical trials to assess the efficacy of drugs before complete failure occurs. Peru changed its national treatment policy for uncomplicated malaria to artesunate (ART)-plus-mefloquine (MQ) combination therapy in the Amazon basin in 2001. We genotyped isolates collected in 1999 and isolates collected in 2006 to 2007 for mutations in the Plasmodium falciparum dihydrofolate reductase (Pfdhfr) and dihydropteroate synthase (Pfdhps) genes, multidrug resistance gene 1 (Pfmdr-1), the chloroquine (CQ) resistance transporter gene (Pfcrt), and the Ca2+ ATPase gene (PfATP6); these have been shown to be involved in resistance to sulfadoxine-pyrimethamine (SP), MQ, CQ, and possibly ART, respectively. Microsatellite haplotypes around the Pfdhfr, Pfdhps, Pfcrt, and Pfmdr-1 loci were also determined. There was a significant decline in the highly SP resistant Pfdhfr and Pfdhps genotypes from 1999 to 2006. In contrast, a CQ-resistant Pfcrt genotype increased in frequency during the same period. Among five different Pfmdr-1 allelic forms noted in 1999, two genotypes increased in frequency while one genotype decreased by 2006. We also noted previously undescribed polymorphisms in the PfATP6 gene as well as an increase in the frequency of a deletion mutant during this period. In addition, microsatellite analysis revealed that the resistant Pfdhfr, Pfdhps, and Pfcrt genotypes have each evolved from a single founder haplotype, while Pfmdr-1 genotypes have evolved from at least two independent haplotypes. Importantly, this study demonstrates that the Peruvian triple mutant Pfdhps genotypes are very similar to those found in other parts of South America.
C1 [Bacon, David J.; Salas, Carola; Soberon, Valeria; Santolalla, Meddly; Haley, Ryan; Tsukayama, Pablo; Lucas, Carmen] Naval Med Res Ctr Detachment, Parasitol Program, Lima, Peru.
[McCollum, Andrea M.; Griffing, Sean M.] Emory Univ, Program Populat Biol Ecol & Evolut, Atlanta, GA 30322 USA.
[McCollum, Andrea M.; Griffing, Sean M.; Udhayakumar, Venkatachalam] Ctr Dis Control & Prevent, Malaria Branch, Div Parasit Dis, Natl Ctr Zoonot Vector Borne & Enter Dis,CCID, Atlanta, GA USA.
[McCollum, Andrea M.; Udhayakumar, Venkatachalam] Atlanta Res & Educ Fdn, Decatur, GA USA.
[Escalante, Ananias A.] Arizona State Univ, Sch Life Sci, Tempe, AZ USA.
RP Bacon, DJ (reprint author), USN, Environm & Preventat Med Unit 2, Lab Sci, 1887 Powhatan St, Norfolk, VA 23511 USA.
EM david.bacon@med.navy.mil
FU Department of Defense-Global Emerging Infectious System (DoD-GEIS)
[847705.82000.25GB,B0016]; Antimicrobial Drug Resistance Working Group;
Centers for Disease Control and Prevention; Atlanta Research and
Education Foundation; Atlanta VA Medical Center; National Science
Foundation; National Institutes of Health [R01GM084320]
FX The views expressed in this article are those of the authors and do not
necessarily reflect the official policy of the Department of the Navy,
the Department of Defense, the Department of Health and Human Services,
or the U. S. government.; This work was supported in part by funds
provided by the Department of Defense-Global Emerging Infectious System
(DoD-GEIS) under unit 847705.82000.25GB,B0016. The work was also
supported in part by the Antimicrobial Drug Resistance Working Group,
the Centers for Disease Control and Prevention, and the Atlanta Research
and Education Foundation, Atlanta VA Medical Center. One of the authors
is a military service member (D. J. B.). This work was prepared as part
of his official duties. S. M. Griffing is supported under a National
Science Foundation Graduate Research Fellowship. A. A. Escalante is
supported by grant R01GM084320 from the National Institutes of Health.;
The study protocol was approved by the Naval Medical Research Center
Institutional Review Board in compliance with all applicable Federal
regulations governing the protection of human subjects.; We acknowledge
Shannon K. McClintock for support in the statistical analysis of the
results.
NR 35
TC 44
Z9 45
U1 0
U2 1
PU AMER SOC MICROBIOLOGY
PI WASHINGTON
PA 1752 N ST NW, WASHINGTON, DC 20036-2904 USA
SN 0066-4804
J9 ANTIMICROB AGENTS CH
JI Antimicrob. Agents Chemother.
PD MAY 1
PY 2009
VL 53
IS 5
BP 2042
EP 2051
DI 10.1128/AAC.01677-08
PG 10
WC Microbiology; Pharmacology & Pharmacy
SC Microbiology; Pharmacology & Pharmacy
GA 438AQ
UT WOS:000265528700044
PM 19258269
ER
PT J
AU Lazio, TJW
Brogan, CL
Goss, WM
Stanimirovic, Z
AF Lazio, T. Joseph W.
Brogan, C. L.
Goss, W. M.
Stanimirovic, Znezana
TI SPATIAL VARIATIONS IN GALACTIC H I STRUCTURE ON AU-SCALES TOWARD 3C 147
OBSERVED WITH THE VERY LONG BASELINE ARRAY
SO ASTRONOMICAL JOURNAL
LA English
DT Article
DE galaxies: individual (3C 147); ISM: general; ISM: structure; radio
lines: ISM; techniques: interferometric
ID COLD NEUTRAL MEDIUM; INTERSTELLAR-MEDIUM; ATOMIC-STRUCTURE; SPECTRUM;
HYDROGEN; PULSARS; CLOUDS; 3C147
AB This paper reports dual-epoch, Very Long Baseline Array observations of Hi absorption toward 3C 147. One of these epochs (2005) represents new observations, while one (1998) represents the reprocessing of previous observations to obtain higher signal-to-noise results. Significant Hi opacity and column density variations, both spatially and temporally, are observed with typical variations at the level of Delta tau approximate to 0.20 and in some cases as large as Delta tau approximate to 0.70, corresponding to column density fluctuations of order 5 x 10(19) cm(-2) for an assumed 50 K spin temperature. The typical angular scale is 15 mas; while the distance to the absorbing gas is highly uncertain, the equivalent linear scale is likely to be about 10 AU. Approximately 10% of the face of the source is covered by these opacity variations, probably implying a volume filling factor for the small-scale absorbing gas of no more than about 1%. Comparing our results with earlier results toward 3C 138 (Brogan et al.), we find numerous similarities, and we conclude that small-scale absorbing gas is a ubiquitous phenomenon, albeit with a low probability of intercept on any given line of sight. Further, we compare the volumes sampled by the line of sight through the Galaxy between our two epochs and conclude that, on the basis of the motion of the Sun alone, these two volumes are likely to be substantially different. In order to place more significant constraints on the various models for the origin of these small-scale structures, more frequent sampling is required in any future observations.
C1 [Lazio, T. Joseph W.] USN, Res Lab, Washington, DC 20375 USA.
[Brogan, C. L.] Natl Radio Astron Observ, Charlottesville, VA 22903 USA.
[Goss, W. M.] Natl Radio Astron Observ, Socorro, NM 87801 USA.
[Stanimirovic, Znezana] Univ Wisconsin, Dept Astron, Madison, WI 53706 USA.
RP Lazio, TJW (reprint author), USN, Res Lab, 4555 Overlook Ave SW, Washington, DC 20375 USA.
EM Joseph.Lazio@nrl.navy.mil
FU National Science Foundation
FX We thank N. Dieter-Conklin for helpful discussions on the motion of the
lines of sight through the Galaxy. We thank J. Dickey, the referee, who
made insightful comments that we believe improved the analysis presented
here. The Wisconsin H-Alpha Mapper is funded by the National Science
Foundation. This research has made use of the SIMBAD database, operated
at CDS, Strasbourg, France. This research has made use of NASA's
Astrophysics Data System. The National Radio Astronomy Observatory is a
facility of the National Science Foundation operated under cooperative
agreement by Associated Universities, Inc. Basic research in radio
astronomy at the NRL is supported by 6.1 NRL Base funding.
NR 26
TC 10
Z9 10
U1 0
U2 1
PU IOP PUBLISHING LTD
PI BRISTOL
PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND
SN 0004-6256
J9 ASTRON J
JI Astron. J.
PD MAY
PY 2009
VL 137
IS 5
BP 4526
EP 4537
DI 10.1088/0004-6256/137/5/4526
PG 12
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 430WB
UT WOS:000265019900031
ER
PT J
AU Dere, KP
Landi, E
Young, PR
Del Zanna, G
Landini, M
Mason, HE
AF Dere, K. P.
Landi, E.
Young, P. R.
Del Zanna, G.
Landini, M.
Mason, H. E.
TI CHIANTI - an atomic database for emission lines IX. Ionization rates,
recombination rates, ionization equilibria for the elements hydrogen
through zinc and updated atomic data
SO ASTRONOMY & ASTROPHYSICS
LA English
DT Review
DE atomic data; atomic processes; radiation mechanisms: thermal; plasmas
ID ELECTRON-IMPACT-EXCITATION; FINITE-DENSITY PLASMAS; HELIUM-LIKE IONS;
EFFECTIVE COLLISION STRENGTHS; OPTICALLY THIN PLASMAS; PAULI
ENERGY-LEVELS; ASTROPHYSICALLY ABUNDANT ELEMENTS; BERYLLIUM
ISOELECTRONIC SEQUENCE; HIGH-TEMPERATURE PLASMAS; SOLAR OXYGEN ABUNDANCE
AB Aims. The goal of the CHIANTI atomic database is to provide a set of atomic data for the interpretation of astrophysical spectra emitted by collisionally dominated, high temperature, optically thin sources.
Methods. A complete set of ground level ionization and recombination rate coefficients has been assembled for all atoms and ions of the elements of H through Zn and inserted into the latest version of the CHIANTI database, CHIANTI 6. Ionization rate coefficients are taken from the recent work of Dere (2007, A&A, 466, 771) and recombination rates from a variety of sources in the literature. These new rate coefficients have allowed the calculation of a new set of ionization equilibria and radiative loss rate coefficients. For some ions, such as Fe VIII and Fe IX, there are significant differences from previous calculations. In addition, existing atomic parameters have been revised and new atomic parameters inserted into the database.
Results. For each ion in the CHIANTI database, elemental abundances, ionization potentials, atomic energy levels, radiative rates, electron and proton collisional rate coefficients, ionization and recombination rate coefficients, and collisional ionization equilibrium populations are provided. In addition, parameters for the calculation of the continuum due to bremsstrahlung, radiative recombination and two-photon decay are provided. A suite of programs written in the Interactive Data Language (IDL) are available to calculate line and continuum emissivities and other properties. All data and programs are freely available at http://wwwsolar.nrl.navy.mil/chianti
C1 [Dere, K. P.] George Mason Univ, Dept Computat & Data Sci, Fairfax, VA 22030 USA.
[Landi, E.; Young, P. R.] USN, Res Lab, Washington, DC 20375 USA.
[Landi, E.] Artep Inc, Ellicott City, MD 21042 USA.
[Del Zanna, G.; Mason, H. E.] Univ Cambridge, Dept Appl Math & Theoret Phys, Cambridge CB3 0WA, England.
[Landini, M.] Univ Firenze, Dipartimento Astron & Sci Spazio, I-50125 Florence, Italy.
RP Dere, KP (reprint author), George Mason Univ, Dept Computat & Data Sci, 4400 Univ Dr, Fairfax, VA 22030 USA.
EM kdere@gmu.edu; landi@poppeo.nrl.navy.mil; pyoung@ssd5.nrl.navy.mil;
G.Del-Zanna@damtp.cam.ac.uk; landini@arcetri.astro.it;
h.e.mason@damptp.cam.ac.uk
RI Landi, Enrico/H-4493-2011
FU NASA SR&T and LWS programs; Science and Technology Facilities Council;
[NNG06EA14I]; [NNH06CD24C]
FX This research has made use of NASA's Astrophysics Data System. Support
for this work has been provided by the NASA SR&T and LWS programs. The
work of E. Landi is supported by the NNG06EA14I, NNH06CD24C and other
NASA grants. The work of H. Mason and G. Del Zanna is supported by the
Science and Technology Facilities Council.
NR 174
TC 293
Z9 295
U1 5
U2 21
PU EDP SCIENCES S A
PI LES ULIS CEDEX A
PA 17, AVE DU HOGGAR, PA COURTABOEUF, BP 112, F-91944 LES ULIS CEDEX A,
FRANCE
SN 0004-6361
J9 ASTRON ASTROPHYS
JI Astron. Astrophys.
PD MAY
PY 2009
VL 498
IS 3
BP 915
EP 929
DI 10.1051/0004-6361/200911712
PG 15
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 446KZ
UT WOS:000266121800028
ER
PT J
AU Hyman, SD
Wijnands, R
Lazio, TJW
Pal, S
Starling, R
Kassim, NE
Ray, PS
AF Hyman, Scott D.
Wijnands, Rudy
Lazio, T. Joseph W.
Pal, Sabyasachi
Starling, Rhaana
Kassim, Namir E.
Ray, Paul S.
TI GCRT J1742-3001: A NEW RADIO TRANSIENT TOWARD THE GALACTIC CENTER
SO ASTROPHYSICAL JOURNAL
LA English
DT Article
DE Galaxy: center; radio continuum: galaxies; stars: variables: other
ID X-RAY; LOW/HARD STATE; LOW-FREQUENCY; CENTER REGION; SGR-E; BURSTS;
PLANE; LATITUDE; SEARCH; FLARES
AB We report the detection of a new transient radio source, GCRT J1742-3001, located similar to 1 degrees. from the Galactic center. The source was detected 10 times from late 2006 to 2007 May in our 235 MHz transient monitoring program with the Giant Metrewave Radio Telescope (GMRT). The radio emission brightened in about one month, reaching a peak observed flux density of similar to 100 mJy on 2007 January 28, and decaying to similar to 50 mJy by 2007 May when our last monitoring observation was made. Two additional faint, isolated 235 MHz detections were made in mid-2006, also with the GMRT. GCRT J1742-3001 is unresolved at each epoch, with typical resolutions of similar to 20 '' x 10 ''. No polarization information is available from the observations. Based on nondetections in observations obtained simultaneously at 610 MHz, we deduce that the spectrum of GCRT J1742-3001 is very steep, with a spectral index less than about -2. Follow-up radio observations in 2007 September at 330 MHz and 1.4 GHz, and in 2008 February at 235 MHz yielded no detections. No X-ray counterpart is detected in a serendipitous observation obtained with the X-ray telescope aboard the Swift satellite during the peak of the radio emission in early 2007. We consider the possibilities that GCRT J1742-3001 is either a new member of an existing class of radio transients, or is representative of a new class, possibly having no associated X-ray emission.
C1 [Hyman, Scott D.] Sweet Briar Coll, Dept Phys & Engn, Sweet Briar, VA 24595 USA.
[Wijnands, Rudy] Univ Amsterdam, Astron Inst Anton Pannekoek, NL-1098 SJ Amsterdam, Netherlands.
[Lazio, T. Joseph W.; Kassim, Namir E.] USN, Res Lab, Remote Sensing Div, Washington, DC 20375 USA.
[Pal, Sabyasachi] Tata Inst Fundamental Res, Natl Ctr Radio Astrophys, Pune, Maharashtra, India.
[Starling, Rhaana] Univ Leicester, Dept Phys & Astron, Leicester LE1 7RH, Leics, England.
[Ray, Paul S.] USN, Res Lab, Div Space Sci, Washington, DC 20375 USA.
RP Hyman, SD (reprint author), Sweet Briar Coll, Dept Phys & Engn, Sweet Briar, VA 24595 USA.
EM shyman@sbc.edu; rudy@science.uva.nl; Joseph.Lazio@nrl.navy.mil;
spal@ncra.tifr.res.in; rlcs1@star.le.ac.uk; Namir.Kassim@nrl.navy.mil;
Paul.Ray@nrl.navy.mil
OI Ray, Paul/0000-0002-5297-5278
FU Research Corporation; SAO Chandra grants [GO67135F, GO67038B]; Science
and Technology Facilities Council
FX We thank the staff of the GMRT that made these observations possible.
GMRT is run by the National Centre for Radio Astrophysics of the Tata
Institute of Fundamental Research. We thank E. Gallo and D. Kaplan for
very helpful discussions. S. D. H. is supported by funding from Research
Corporation and SAO Chandra grants GO67135F and GO67038B. Basic research
in radio astronomy at the NRL is supported by 6.1 base funding. R. S.
acknowledges support from the Science and Technology Facilities Council.
NR 38
TC 20
Z9 20
U1 0
U2 2
PU IOP PUBLISHING LTD
PI BRISTOL
PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND
SN 0004-637X
J9 ASTROPHYS J
JI Astrophys. J.
PD MAY 1
PY 2009
VL 696
IS 1
BP 280
EP 286
DI 10.1088/0004-637X/696/1/280
PG 7
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 435NH
UT WOS:000265350100027
ER
PT J
AU Patsourakos, S
Klimchuk, JA
AF Patsourakos, S.
Klimchuk, J. A.
TI SPECTROSCOPIC OBSERVATIONS OF HOT LINES CONSTRAINING CORONAL HEATING IN
SOLAR ACTIVE REGIONS
SO ASTROPHYSICAL JOURNAL
LA English
DT Article
DE Sun: corona
ID EUV IMAGING SPECTROMETER; X-RAY; EMISSION-LINES; LOOP OBSERVATIONS;
ATOMIC DATABASE; HINODE; PLASMA; DIAGNOSTICS; FIELD; TEMPERATURE
AB Extreme-ultraviolet observations of warm coronal loops suggest that they are bundles of unresolved strands that are heated impulsively to high temperatures by nanoflares. The plasma would then have the observed properties ( e. g., excess density compared with static equilibrium) when it cools into the 1-2MK range. If this interpretation is correct, then very hot emission should be present outside of proper flares. It is predicted to be very faint, however. A critical element for proving or refuting this hypothesis is the existence of hot, yet faint plasmas which should be at amounts predicted by impulsive heating models. We report on the first comprehensive spectroscopic study of hot plasmas in active regions (ARs). Data from the Extreme- ultraviolet Imaging Spectrometer on Hinode were used to construct emission measure (EM) distributions in quiescent ARs in the 1-5MK temperature range. The distributions are flat or slowly increasing up to approximately 3MK and then fall off rapidly at higher temperatures. We show that AR models based on impulsive heating can reproduce the observed EM distributions relatively well. Our results provide strong new evidence that coronal heating is impulsive in nature.
C1 [Patsourakos, S.] USN, Res Lab, Div Space Sci, Washington, DC 20375 USA.
[Patsourakos, S.] George Mason Univ, Ctr Earth Observing & Space Res, Inst Computat Sci, Coll Sci, Fairfax, VA 22030 USA.
[Klimchuk, J. A.] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA.
RP Patsourakos, S (reprint author), USN, Res Lab, Div Space Sci, Washington, DC 20375 USA.
RI Klimchuk, James/D-1041-2012
OI Klimchuk, James/0000-0003-2255-0305
FU NASA Hinode and LWS programs
FX Hinode is a Japanese mission developed and launched by ISAS/JAXA, with
NAOJ as domestic partner and NASA and STFC (UK) as international
partners. It is operated by these agencies in cooperation with ESA and
NSC ( Norway). This work was supported by the NASA Hinode and LWS
programs. We wish to thank H. Warren, I. Ugarte Urra, U. Feldman, C.
Brown, E. Robbrecht, G. Doscheck J.-F. Hochedez, and J. Mariska for
helpful discussions. We acknowledge useful discussions with the members
of the ISSI team "The Role of Spectroscopic and Imaging Data in
Understanding Coronal Heating" ( team Parenti).
NR 41
TC 31
Z9 31
U1 0
U2 2
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 MAY 1
PY 2009
VL 696
IS 1
BP 760
EP 765
DI 10.1088/0004-637X/696/1/760
PG 6
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 435NH
UT WOS:000265350100065
ER
PT J
AU Jia, YD
Russell, CT
Jian, LK
Manchester, WB
Cohen, O
Vourlidas, A
Hansen, KC
Combi, MR
Gombosi, TI
AF Jia, Y. D.
Russell, C. T.
Jian, L. K.
Manchester, W. B.
Cohen, O.
Vourlidas, A.
Hansen, K. C.
Combi, M. R.
Gombosi, T. I.
TI STUDY OF THE 2007 APRIL 20 CME-COMET INTERACTION EVENT WITH AN MHD MODEL
SO ASTROPHYSICAL JOURNAL LETTERS
LA English
DT Article
DE comets: individual (2P/Encke); MHD; Sun: coronal mass ejections (CMEs)
ID CORONAL MASS EJECTIONS; SOLAR-WIND; DISCONNECTION; ENERGETICS; 2P/ENCKE
AB This study examines the tail disconnection event on 2007 April 20 on comet 2P/Encke, caused by a coronal mass ejection (CME) at a heliocentric distance of 0.34 AU. During their interaction, both the CME and the comet are visible with high temporal and spatial resolution by the STEREO-A spacecraft. Previously, only current sheets or shocks have been accepted as possible reasons for comet tail disconnections, so it is puzzling that the CME caused this event. The MHD simulation presented in this work reproduces the interaction process and demonstrates how the CME triggered a tail disconnection in the April 20 event. It is found that the CME disturbs the comet with a combination of a 180 degrees sudden rotation of the interplanetary magnetic field ( IMF), followed by a 90 degrees. gradual rotation. Such an interpretation applies our understanding of solar wind-comet interactions to determine the in situ IMF orientation of the CME encountering Encke.
C1 [Jia, Y. D.; Russell, C. T.; Jian, L. K.] Univ Calif Los Angeles, IGPP, Los Angeles, CA 90095 USA.
[Manchester, W. B.; Cohen, O.; Hansen, K. C.; Combi, M. R.; Gombosi, T. I.] Univ Michigan, CSEM, Ann Arbor, MI 48109 USA.
[Vourlidas, A.] USN, Res Lab, Div Space Sci, Solar Phys Branch, Washington, DC 20375 USA.
RP Jia, YD (reprint author), Univ Calif Los Angeles, IGPP, Los Angeles, CA 90095 USA.
RI Vourlidas, Angelos/C-8231-2009; Jian, Lan/B-4053-2010; Gombosi,
Tamas/G-4238-2011; Hansen, Kenneth/F-3693-2011; Manchester,
Ward/I-9422-2012; Combi, Michael/J-1697-2012
OI Vourlidas, Angelos/0000-0002-8164-5948; Jian, Lan/0000-0002-6849-5527;
Gombosi, Tamas/0000-0001-9360-4951; Hansen, Kenneth/0000-0002-8502-1980;
Combi, Michael/0000-0002-9805-0078
NR 19
TC 13
Z9 13
U1 0
U2 4
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 MAY 1
PY 2009
VL 696
IS 1
BP L56
EP L60
DI 10.1088/0004-637X/696/1/L56
PG 5
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 434CP
UT WOS:000265253100014
ER
PT J
AU Tvaryanas, AP
MacPherson, GD
AF Tvaryanas, Anthony P.
MacPherson, Glen D.
TI Fatigue in Pilots of Remotely Piloted Aircraft Before and After Shift
Work Adjustment
SO AVIATION SPACE AND ENVIRONMENTAL MEDICINE
LA English
DT Article
DE human factors; circadian periodicity; shift work and shift rotations;
sleep; pilots; sensor operators; unmanned aircraft systems
ID EPWORTH SLEEPINESS SCALE; DAYTIME SLEEPINESS; PERFORMANCE
AB Background: Remotely piloted aircraft (RPA) with long endurance allow near-continuous operations, necessitating the implementation of shift work for crewmembers to provide the necessary manning of ground control stations. Shift work has a well-known association with fatigue, degraded work performance, and an increased risk for errors and accidents. This study presents the results of a follow-up survey of a particular population of shift-working RPA crewmembers 1 yr after modification of their shift work schedule. Methods: A cross-sectional survey of 66 RPA crewmembers was conducted using a collection of validated fatigue scales. This data was compared to survey data collected a year prior from the same population and from a reference group of non-shift-working aircrew. Shift system features and individual and situational differences associated with fatigue were explored. Additionally, several alternative types of shift schedules were assessed through modeling and simulation. Results: The study found no significant reduction in reported fatigue despite prior modifications to the shift work schedule to increase opportunities for recovery. Months shift working, sleep quality, and disturbances in family and social activities were associated with overall fatigue scores. Approximately half of those surveyed met criteria for occupationally Significant fatigue. Months shift working, use of on-duty napping, and fatigue scores were predictive of those with occupationally significant fatigue. Modeling of feasible variants of the Current shift work schedule failed to reveal a significantly improved alternative schedule. Conclusions: Collectively, the results demonstrate a persistent problem with chronic fatigue in this study population, likely reflective of continued inadequate opportunities for recover), and restorative sleep.
C1 [Tvaryanas, Anthony P.] USN, Postgrad Sch, Monterey, CA 93943 USA.
[MacPherson, Glen D.] 711th Human Performance Wing, Brooks City Base, TX USA.
RP Tvaryanas, AP (reprint author), USN, Postgrad Sch, 411 Cunningham Rd,Glasgow Hall,Rm 241, Monterey, CA 93943 USA.
EM aptvarya@nps.edu
NR 25
TC 7
Z9 7
U1 1
U2 5
PU AEROSPACE MEDICAL ASSOC
PI ALEXANDRIA
PA 320 S HENRY ST, ALEXANDRIA, VA 22314-3579 USA
SN 0095-6562
J9 AVIAT SPACE ENVIR MD
JI Aviat. Space Environ. Med.
PD MAY
PY 2009
VL 80
IS 5
BP 454
EP 461
DI 10.3357/ASEM.2455.2009
PG 8
WC Public, Environmental & Occupational Health; Medicine, General &
Internal; Sport Sciences
SC Public, Environmental & Occupational Health; General & Internal
Medicine; Sport Sciences
GA 438JD
UT WOS:000265550800004
PM 19456006
ER
PT J
AU Stemper, BD
Yoganandan, N
Pintar, FA
Shender, BS
Paskoff, GR
AF Stemper, Brian D.
Yoganandan, Narayan
Pintar, Frank A.
Shender, Barry S.
Paskoff, Glenn R.
TI Physical Effects of Ejection on the Head-Neck Complex: Demonstration of
a Cadaver Model
SO AVIATION SPACE AND ENVIRONMENTAL MEDICINE
LA English
DT Article
DE biomechanics; cervical spine; ejection; compression; flexion; trauma
ID HUMAN CERVICAL-SPINE; FACET JOINT KINEMATICS; AIR-FORCE; VERTEBRAL
FRACTURE; WHIPLASH INJURY; VERTICAL IMPACT; AIRCRAFT; EXPERIENCE; PILOTS
AB STEMPER BD, YOGANANDAN N. PINTAR FA, SHENDER BS, PASKOFF GR. Physical effects of ejection on the head-neck complex demonstration of a cadaver model. Aviat Space Environ Med 2009; 80:489-94. Vertebral fracture is the most common severe injury during highspeed pilot ejection. However, the loading paradigm experienced by pilots may also lead to soft-tissue spinal injuries that are more difficult to quantify and can lead to long-term deficits. This manuscript describes a new experimental protocol to simulate the effects of pilot ejection on the tissues of the head-neck complex. The model permits precise control of head-neck complex initial positioning, detailed analysis of head and spinal kinematics and upper and lower neck loads, and the ability to thoroughly investigate and identify soft-tissue injuries through upper and lower neck injury criteria, radiography, manual palpation, and cryomicrotomy. For the current test, peak acceleration of + 14.8 G(2) was similar to actual ejection events and duration of the acceleration pulse was approximately 100 ms. The specimen was oriented in flexion prior to initiation of inferior-to-superiorly directed acceleration. Subfailure ligamentum flavum injuries were sustained at the C4-C5 and C5-C6 cervical spinal levels and identified by increased segmental motions during the simulated ejection, increased laxity following testing, and cryomicrotomy. Upper and lower neck injury criteria did not predict these soft-tissue injuries. This experimental model can be used for detailed analysis of the effects of gender, head-neck orientation, helmet instrumentation, and acceleration pulse characteristics on cervical spine injury potential during pilot ejection events.
C1 [Stemper, Brian D.; Yoganandan, Narayan; Pintar, Frank A.] Med Coll Wisconsin, Dept Neurosurg, Milwaukee, WI 53226 USA.
[Shender, Barry S.; Paskoff, Glenn R.] USN, Air Warfare Ctr, Div Aircraft, Patuxent River, MD USA.
RP Stemper, BD (reprint author), Med Coll Wisconsin, Dept Neurosurg, 9200 W Wisconsin Ave, Milwaukee, WI 53226 USA.
EM stemps@mcw.edu
FU Office of Naval Research through Naval Air Warfare Center Aircraft
Division [N00421-02-C-3005]; Department of Veterans Affairs Medical
Research
FX This research was supported in part by the Office of Naval Research
through Naval Air Warfare Center Aircraft Division contract
N00421-02-C-3005 and the Department of Veterans Affairs Medical
Research.
NR 50
TC 8
Z9 9
U1 0
U2 0
PU AEROSPACE MEDICAL ASSOC
PI ALEXANDRIA
PA 320 S HENRY ST, ALEXANDRIA, VA 22314-3579 USA
SN 0095-6562
J9 AVIAT SPACE ENVIR MD
JI Aviat. Space Environ. Med.
PD MAY
PY 2009
VL 80
IS 5
BP 489
EP 494
DI 10.3357/ASEM.2422.2009
PG 6
WC Public, Environmental & Occupational Health; Medicine, General &
Internal; Sport Sciences
SC Public, Environmental & Occupational Health; General & Internal
Medicine; Sport Sciences
GA 438JD
UT WOS:000265550800011
PM 19456013
ER
PT J
AU Lautenbacher, CC
AF Lautenbacher, Conrad C., Jr.
TI Ocean and Atmosphere-The Future
SO BIOSCIENCE
LA English
DT Editorial Material
C1 [Lautenbacher, Conrad C., Jr.] USN, Stennis Space Ctr, MS USA.
[Lautenbacher, Conrad C., Jr.] NOAA, Washington, DC USA.
EM clautenbache@csc.com
NR 0
TC 2
Z9 2
U1 0
U2 2
PU AMER INST BIOLOGICAL SCI
PI WASHINGTON
PA 1444 EYE ST, NW, STE 200, WASHINGTON, DC 20005 USA
SN 0006-3568
J9 BIOSCIENCE
JI Bioscience
PD MAY
PY 2009
VL 59
IS 5
BP 366
EP 367
DI 10.1525/bio.2009.59.5.2
PG 2
WC Biology
SC Life Sciences & Biomedicine - Other Topics
GA 439HP
UT WOS:000265618500002
ER
PT J
AU Campbell, JR
Welton, EJ
Spinhirne, JD
AF Campbell, James R.
Welton, Ellsworth J.
Spinhirne, James D.
TI Continuous Lidar Monitoring of Polar Stratospheric Clouds at the South
Pole
SO BULLETIN OF THE AMERICAN METEOROLOGICAL SOCIETY
LA English
DT Editorial Material
ID MICROPULSE LIDAR; DENITRIFICATION
C1 [Campbell, James R.] Univ Corp Atmospher Res, USN, Res Lab, Visiting Scientist Programs, Monterey, CA 93943 USA.
[Welton, Ellsworth J.] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA.
[Spinhirne, James D.] Univ Arizona, Dept Elect & Comp Engn, Tucson, AZ 85721 USA.
RP Campbell, JR (reprint author), Univ Corp Atmospher Res, USN, Res Lab, Visiting Scientist Programs, Monterey, CA 93943 USA.
EM jamesc@ucar.edu
RI Welton, Ellsworth/A-8362-2012; Campbell, James/C-4884-2012
OI Campbell, James/0000-0003-0251-4550
NR 13
TC 1
Z9 2
U1 0
U2 0
PU AMER METEOROLOGICAL SOC
PI BOSTON
PA 45 BEACON ST, BOSTON, MA 02108-3693 USA
SN 0003-0007
J9 B AM METEOROL SOC
JI Bull. Amer. Meteorol. Soc.
PD MAY
PY 2009
VL 90
IS 5
BP 613
EP 617
DI 10.1175/2008BAMS2754.1
PG 5
WC Meteorology & Atmospheric Sciences
SC Meteorology & Atmospheric Sciences
GA 462LR
UT WOS:000267354800003
ER
PT J
AU Parker, KE
Marsack, JD
Elswick, JD
Brunstetter, TJ
Applegate, RA
AF Parker, Katrina E.
Marsack, Jason D.
Elswick, James D.
Brunstetter, Tyson J.
Applegate, Raymond A.
TI Controlled induction of spherical aberration with custom soft contact
lenses
SO CLINICAL AND EXPERIMENTAL OPTOMETRY
LA English
DT Article
DE custom soft contact lens; high contrast visual acuity; higher-order
aberrations; spherical aberration; wavefront-guided
ID VISUAL-ACUITY; SURGERY; ERROR
AB Background: This study investigated the non-invasive induction of spherical aberration (SA) levels consistent with complication-free wavefront-guided (WFG) refractive surgery using custom WFG soft contact lenses and quantified the resulting impact on visual performance.
Methods: Twelve healthy individuals of typical military age (mean of 26.08 +/- 1.92 years) meeting the inclusion criteria of emmetropia (less than +/- 0.50 DS and less than +/- 0.50 DC) as measured by subjective refraction served as subjects. Five plano lenses were manufactured to induce a range of SA typical of those encountered after refractive surgery. The measured SA values over a 6 mm artificial pupil in these five lenses were -0.224 mu m, 0.074 mu m, 0.214 mu m, 0.495 mu m and 0.621 mu m. For each subject, the level of total ocular aberrations through 10 Zernike radial orders over a 6 mm pupil was measured with a custom Shack-Hartmann wavefront sensor, while wearing each lens. Visual performance was evaluated using high contrast. visual acuity (HCVA) measured through a 6 mm artificial pupil.
Results: Custom WFG soft contact lenses can be manufactured to include the range of SA that occurs with complication-free refractive surgery (-0.20 mu m to +0.60 mu m) and produces a change ill SA within a similar range when worn oil the eye. High contrast visual performance with these lenses varied, depending on the amount of SA in each lens. Visual performance worsened with greater amounts of positive or negative SA and a quadratic fit to the data peaked at +0.209 mu m.
Conclusions: Defined levels of SA can be manufactured and induced (non-invasively) with WFG soft contact lenses and their effect on logMAR high contrast visual performance can be measured. Results show that subjects' best logMAR HCVA occurs with the presence of-positive residual SA. When designing the actual test lens, the targeted change ill aberrations for each subject will likely be better achieved by first measuring the aberrations of a template lens on the eye and then compensating for unique subject dependent eye-lens interactions.
C1 [Parker, Katrina E.; Marsack, Jason D.; Elswick, James D.; Applegate, Raymond A.] Univ Houston, Coll Optometry, Visual Opt Inst, Houston, TX 77204 USA.
[Brunstetter, Tyson J.] USN, Refract Surg Ctr, Med Ctr, San Diego, CA 92152 USA.
RP Parker, KE (reprint author), Univ Houston, Coll Optometry, Visual Opt Inst, 505 J Davis Armistead Bldg, Houston, TX 77204 USA.
EM kparker@optometry.uh.edu
FU Naval Medical Center [N00259-07-T-0388]; NIH/NEI [R01 EY08520, P30 EY
07551]; Borish Endowment
FX This research was supported by grants to the Refractive Surgery Center,
Naval Medical Center contract N00259-07-T-0388 (RAA) NIH/NEI R01 EY08520
(RAA), NIH/NEI P30 EY 07551 (College of Optometry, University of Houston
Core Grant) and from the Borish Endowment (College of Optometry,
University of Houston).
NR 13
TC 5
Z9 5
U1 0
U2 1
PU WILEY-BLACKWELL PUBLISHING, INC
PI MALDEN
PA COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA
SN 0816-4622
J9 CLIN EXP OPTOM
JI Clin. Exp. Optom.
PD MAY
PY 2009
VL 92
IS 3
BP 283
EP 288
DI 10.1111/j.1444-0938.2009.00375.x
PG 6
WC Ophthalmology
SC Ophthalmology
GA 452OH
UT WOS:000266550000015
PM 19351378
ER
PT J
AU Crum-Cianflone, N
Eberly, L
Zhang, YF
Ganesan, A
Weintrob, A
Marconi, V
Barthel, RV
Fraser, S
Agan, BK
Wegner, S
AF Crum-Cianflone, Nancy
Eberly, Lynn
Zhang, Yafeng
Ganesan, Anuradha
Weintrob, Amy
Marconi, Vincent
Barthel, R. Vincent
Fraser, Susan
Agan, Brian K.
Wegner, Scott
TI Is HIV Becoming More Virulent? Initial CD4 Cell Counts among HIV
Seroconverters during the Course of the HIV Epidemic: 1985-2007
SO CLINICAL INFECTIOUS DISEASES
LA English
DT Article
ID HUMAN-IMMUNODEFICIENCY-VIRUS; DISEASE PROGRESSION; TEMPORAL TRENDS;
LYMPHOCYTE COUNTS; IMMUNE-RESPONSES; CLINICAL-COURSE; INFECTION; COHORT;
AIDS; ASSOCIATION
AB Background. Whether human immunodeficiency virus (HIV) seroconverters have been presenting with progressively lower CD4 cell counts over the course of the HIV epidemic is controversial. Additional data on whether HIV might have become more virulent on a population level (measured by post-seroconversion CD4 cell counts) may provide important insights regarding HIV pathogenesis.
Methods. To determine whether post-seroconversion CD4 cell counts have changed over time, we evaluated 2174 HIV seroconverters as part of a large cohort study during the period 1985-2007. Participants were documented antiretroviral-naive HIV seroconverters who had a CD4 cell count measured within 6 months after receiving a diagnosis of HIV infection. Multiple linear regression models were used to assess trends in initial CD4 cell counts.
Results. The mean initial CD4 cell count decreased during the study period from 632 cells/mm(3) in 1985-1990 to 553 cells/mm(3) in 1991-1995, 493 cells/mm(3) in 1996-2001, and 514 cells/mm(3) in 2002-2007. During those periods, the percentages of seroconverters with an initial CD4 cell count < 350 cells/mm(3) were 12%, 21%, 26%, and 25%, respectively. In the multiple linear model, the mean decrease in CD4 cell count from 1985-1990 was 65 cells/mm(3) in 1991-1995 (P <.001), 107 cells/mm(3) in 1996-2001 (P <.001), and 102 cells/mm(3) in 2002-2007 (P <.001). Similar trends occurred with regard to CD4 cell percentage and total lymphocyte count. Similar decreases in initial CD4 cell counts were observed among African American and white persons during the epidemic.
Discussion. A significant decrease in initial CD4 cell counts among HIV seroconverters in the United States has occurred during the HIV epidemic. These data provide an important clinical correlate to suggestions that HIV may have adapted to the host, resulting in a more virulent infection.
C1 [Crum-Cianflone, Nancy] Naval Med Ctr San Diego, Clin Invest Dept KCA, Infect Dis Clin, San Diego, CA 92134 USA.
[Crum-Cianflone, Nancy; Eberly, Lynn; Ganesan, Anuradha; Weintrob, Amy; Marconi, Vincent; Barthel, R. Vincent; Fraser, Susan; Agan, Brian K.; Wegner, Scott] Uniformed Serv Univ Hlth Sci, TriServ AIDS Clin Consortium, Infect Dis Clin Res Program, Bethesda, MD 20814 USA.
[Ganesan, Anuradha] Natl Naval Med Ctr, Infect Dis Clin, Bethesda, MD USA.
[Eberly, Lynn; Zhang, Yafeng] Univ Minnesota, Div Biostat, Minneapolis, MN USA.
[Weintrob, Amy] Walter Reed Army Med Ctr, Infect Dis Clin, Washington, DC 20307 USA.
[Marconi, Vincent] San Antonio Mil Med Ctr, Infect Dis Clin, San Antonio, TX USA.
[Barthel, R. Vincent] Naval Med Ctr Portsmouth, Infect Dis Clin, Portsmouth, VA USA.
[Fraser, Susan] Tripler Army Med Ctr, Infect Dis Clin, Honolulu, HI 96859 USA.
RP Crum-Cianflone, N (reprint author), Naval Med Ctr San Diego, Clin Invest Dept KCA, Infect Dis Clin, 34800 Bob Wilson Dr,Ste 5, San Diego, CA 92134 USA.
EM nancy.crum@med.navy.mil
RI Marconi, Vincent/N-3210-2014;
OI Marconi, Vincent/0000-0001-8409-4689; Agan, Brian/0000-0002-5114-1669;
Eberly, Lynn/0000-0003-4763-330X
FU Infectious Disease Clinical Research Program (IDCRP); Uniformed Services
University of the Health Sciences (USUHS)
FX Financial support. Infectious Disease Clinical Research Program (IDCRP),
Uniformed Services University of the Health Sciences (USUHS), of which
the TriService AIDS Clinical Consortium is a component. The IDCRP is a
Department of Defense triservice program executed through USUHS and the
Henry M. Jackson Foundation for the Advancement of Military Medicine in
collaboration with HHS/NIH/NIAID/DCR through Interagency Agreement
HU0001-05-2-0011.
NR 26
TC 26
Z9 26
U1 0
U2 3
PU OXFORD UNIV PRESS INC
PI CARY
PA JOURNALS DEPT, 2001 EVANS RD, CARY, NC 27513 USA
SN 1058-4838
J9 CLIN INFECT DIS
JI Clin. Infect. Dis.
PD MAY 1
PY 2009
VL 48
IS 9
BP 1285
EP 1292
DI 10.1086/597777
PG 8
WC Immunology; Infectious Diseases; Microbiology
SC Immunology; Infectious Diseases; Microbiology
GA 429CB
UT WOS:000264897300022
PM 19309306
ER
PT J
AU Marek, DJ
Sechriest, VF
Swiontkowski, MF
Cole, PA
AF Marek, Daniel J.
Sechriest, V. Franklin, II
Swiontkowski, Marc F.
Cole, Peter A.
TI Case Report: Reconstruction of a Recalcitrant Scapular Neck Nonunion and
Literature Review
SO CLINICAL ORTHOPAEDICS AND RELATED RESEARCH
LA English
DT Article
ID INTERNAL-FIXATION; OPEN REDUCTION; OPERATIVE TREATMENT; FLOATING
SHOULDER; GLENOID FOSSA; FRACTURES; PSEUDOARTHROSIS; ACROMION; SPINE;
BODY
AB We present the first reported treatment failure of a reconstructed scapula body that proceeded to nonunion. This is a unique case report of an otherwise healthy patient who underwent open reduction and internal fixation of a scapula fracture nonunion, which is very rare. Failure of internal fixation in this application has not been reported, and, to our knowledge, this is only the fifth case report of a scapula body nonunion that was reconstructed. Of 159 reported cases of open reduction and internal fixation for treatment of scapula neck and body fractures (with or without intraarticular glenoid fractures), there is not one reported case of a nonunion. Our case is described in detail, including the method of surgical reconstruction, and a review of the literature regarding surgical treatment of scapula nonunions after nonoperative treatment also is presented.
C1 [Cole, Peter A.] Reg Hosp, Dept Orthopaed Surg, St Paul, MN 55101 USA.
[Marek, Daniel J.; Swiontkowski, Marc F.; Cole, Peter A.] Univ Minnesota, Dept Orthopaed Surg, Minneapolis, MN 55455 USA.
[Sechriest, V. Franklin, II] USN, Dept Orthopaed Surg, Med Ctr, San Diego, CA 92152 USA.
RP Cole, PA (reprint author), Reg Hosp, Dept Orthopaed Surg, 640 Jackson St, St Paul, MN 55101 USA.
EM Peter.A.Cole@HealthPartners.Com
NR 36
TC 3
Z9 3
U1 0
U2 0
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 0009-921X
J9 CLIN ORTHOP RELAT R
JI Clin. Orthop. Rel. Res.
PD MAY
PY 2009
VL 467
IS 5
BP 1370
EP 1376
DI 10.1007/s11999-008-0651-3
PG 7
WC Orthopedics; Surgery
SC Orthopedics; Surgery
GA 428NE
UT WOS:000264854300037
PM 19082865
ER
PT J
AU Bradford, SF
AF Bradford, Scott F.
TI Surf zone characterization for integration with remote sensing data
SO COASTAL ENGINEERING
LA English
DT Article
DE Surf zone; Wave breaking; Navier-Stokes; Modeling; Simulation
ID BOUSSINESQ EQUATIONS; PLUNGING BREAKERS; BREAKING WAVES; SHALLOW-WATER;
NUMERICAL-SIMULATION; FLOW-FIELDS; MODEL; BATHYMETRY; TURBULENCE;
DYNAMICS
AB A numerical model that solves the unsteady, incompressible, Reynolds averaged, Navier-Stokes equations has been utilized to simulate 57 cases of monochromatic, breaking waves over a sloping bed. The Volume of Fluid technique is used to track the complex, discontinuous free surface and the Renormalized Group turbulence model is used for closure. The model is validated by comparing predictions with Particle Image Velocimetry data and other empirical results. The model results are used to determine a relationship between the incipient wave breaking height and the maximum orbital velocity as well as a relationship between surf zone width and breaker type. Such expressions may be useful for remote sensing methods like Synthetic Aperture Radar to derive breaker height and classification from image data. Published by Elsevier B.V.
C1 USN, Res Lab, Washington, DC 20375 USA.
RP Bradford, SF (reprint author), USN, Res Lab, Code 7261, Washington, DC 20375 USA.
EM scott.bradford@nrl.navy.mil
NR 50
TC 2
Z9 2
U1 1
U2 3
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0378-3839
J9 COAST ENG
JI Coast. Eng.
PD MAY-JUN
PY 2009
VL 56
IS 5-6
BP 591
EP 598
DI 10.1016/j.coastaleng.2008.12.006
PG 8
WC Engineering, Civil; Engineering, Ocean
SC Engineering
GA 436GS
UT WOS:000265401300009
ER
PT J
AU Lee, YT
Farabee, TM
Blake, WK
AF Lee, Yu-Tai
Farabee, Theodore M.
Blake, William K.
TI Turbulence effects of wall-pressure fluctuations for reattached flow
SO COMPUTERS & FLUIDS
LA English
DT Article; Proceedings Paper
CT 9th International Symposium on Fluid Control, Measurement and
Visualization
CY SEP 17-19, 2007
CL Tallahassee, FL
ID BOUNDARY-LAYER; NOISE; FIELD
AB A methodology is presented to predict the frequency spectrum of fluctuating wall-pressures based on a steady Reynolds Averaged Navier Stokes (RANS) solution. The spectral modeling scheme solves a Poisson equation with a linear source term (LST) for the mean-velocity-turbulence interaction (MT) and non-linear source terms (NST) for the turbulence-turbulence interaction (TT). An anisotropic factor is used to account for the anisotropic features of the turbulence field. The prediction method was originally developed based on the equilibrium flow, i.e. turbulent flow with homogeneous and stationary characteristics, with the LST only. In this paper, the model is further applied to a non-equilibrium flow, i.e. flow over a backward facing step (BFS), to explore its predictability for the wall-pressure fluctuations. With the help of DNS results and experimental data for the BFSs, the model is investigated with the inclusion of NST. Prediction results demonstrate the impact of turbulence features of the wall shear layers to the predicted wall-pressure spectrum. Published by Elsevier Ltd.
C1 [Lee, Yu-Tai] USN, Ctr Surface Warfare, Carderock Div, Bethesda, MD 20817 USA.
[Blake, William K.] NTI Corp, Bethesda, MD 20817 USA.
RP Lee, YT (reprint author), USN, Ctr Surface Warfare, Carderock Div, Code 5700,9500 MacArthur Blvd,Bldg 2 Room 319, Bethesda, MD 20817 USA.
EM yu.lee@navy.mil
NR 27
TC 8
Z9 8
U1 1
U2 2
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0045-7930
J9 COMPUT FLUIDS
JI Comput. Fluids
PD MAY
PY 2009
VL 38
IS 5
BP 1033
EP 1041
DI 10.1016/j.compfluid.2008.01.012
PG 9
WC Computer Science, Interdisciplinary Applications; Mechanics
SC Computer Science; Mechanics
GA 427PA
UT WOS:000264790000010
ER
PT J
AU Chun, C
Bae, HJ
Neta, B
AF Chun, Changbum
Bae, Hwa ju
Neta, Beny
TI New families of nonlinear third-order solvers for finding multiple roots
SO COMPUTERS & MATHEMATICS WITH APPLICATIONS
LA English
DT Article
DE Newton's method; Multiple roots; Iterative methods; Nonlinear equations;
Order of convergence; Root-finding
ID EQUATIONS
AB In this paper, we present two new families of iterative methods for multiple roots of nonlinear equations. One of the families require one-function and two-derivative evaluation per step, and the other family requires two-function and one-derivative evaluation. It is shown that both are third-order convergent for multiple roots. Numerical examples suggest that each family member can be competitive to other third-order methods and Newton's method for multiple roots. In fact the second family is even better than the first. Published by Elsevier Ltd
C1 [Neta, Beny] USN, Postgrad Sch, Dept Appl Math, Monterey, CA 93943 USA.
[Chun, Changbum; Bae, Hwa ju] Sungkyunkwan Univ, Dept Math, Suwon 440746, South Korea.
RP Neta, B (reprint author), USN, Postgrad Sch, Dept Appl Math, Monterey, CA 93943 USA.
EM cbchun@skku.edu; bneta@nps.edu
RI Neta, Beny/B-1737-2009
NR 14
TC 30
Z9 30
U1 0
U2 2
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0898-1221
J9 COMPUT MATH APPL
JI Comput. Math. Appl.
PD MAY
PY 2009
VL 57
IS 9
BP 1574
EP 1582
DI 10.1016/j.camwa.2008.10.070
PG 9
WC Mathematics, Applied
SC Mathematics
GA 441HQ
UT WOS:000265760300016
ER
PT J
AU Gibbons, DE
Samaddar, S
AF Gibbons, Deborah E.
Samaddar, Subhashish
TI Designing Referral Network Structures and Decision Rules to Streamline
Provision of Urgent Health and Human Services
SO DECISION SCIENCES
LA English
DT Article
DE Agent-Based Models; Computational Models; Emergency Services; Health
Care; Humanitarian Logistics; Interorganizational Networks; Network
Structures; Public Health Systems; Referral Networks; Referral Partners;
Simulation; Social Networks; and Vaccine Delivery
ID DIFFUSION; DYNAMICS
AB This study uses fully factorial computer simulation to identify referral network attributes and referral decision rules that streamline the routing of people to urgent, limited services. As an example of a scenario, the model represents vaccine delivery in a city of 100,000 people during the first 30 days of a pandemic. By modeling patterns of communication among health care providers and daily routing of overflow clients to affiliated organizations, the simulations determine cumulative effects of referral network designs and decision rules on citywide delivery of available vaccines. Referral networks generally improve delivery rates when compared with random local search by clients. Increasing the health care organizations' tendencies to form referral partnerships from zero to about four partners per organization sharply increases vaccine delivery under most conditions, but further increases in partnering yield little or no gain in system performance. When making referrals, probabilistic selection among partner organizations that have any capacity to deliver vaccines is more effective than selection of the highest-capacity partner, except when tendencies to form partnerships are very low. Implications for designing health and human service referral networks and helping practitioners optimize their use of the networks are discussed. Suggestions for using simulations to model comparable systems are provided.
C1 [Gibbons, Deborah E.] USN, Postgrad Sch, Grad Sch Business & Publ Policy, Monterey, CA 93943 USA.
[Samaddar, Subhashish] Georgia State Univ, Robinson Coll Business, Atlanta, GA 30303 USA.
RP Gibbons, DE (reprint author), USN, Postgrad Sch, Grad Sch Business & Publ Policy, 555 Dyer Rd,Ingersoll 333, Monterey, CA 93943 USA.
EM degibbon@nps.edu; s-samaddar@gsu.edu
NR 17
TC 4
Z9 4
U1 4
U2 24
PU WILEY-BLACKWELL PUBLISHING, INC
PI MALDEN
PA COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA
SN 0011-7315
J9 DECISION SCI
JI Decis. Sci.
PD MAY
PY 2009
VL 40
IS 2
BP 351
EP 371
DI 10.1111/j.1540-5915.2009.00230.x
PG 21
WC Management
SC Business & Economics
GA 449MX
UT WOS:000266335800007
ER
PT J
AU Pravica, MG
Guardala, NA
Price, JL
AF Pravica, Michael G.
Guardala, Noel A.
Price, Jack L.
TI A novel method to dope diamond - Ion Beam Nuclear Transmutation Doping
(IBNTD)
SO DIAMOND AND RELATED MATERIALS
LA English
DT Article; Proceedings Paper
CT 19th European Conference on Diamond, Diamond-Like Materials, Carbon
Nanotubes, Nitrides and Silicon Garbide
CY SEP 07-11, 2008
CL Sitges, SPAIN
ID ENERGIES; FILMS; B-10
AB Using MeV-range protons to transmute a small fraction of host nuclei into n- or p-type dopants, we have demonstrated a novel method to dope challenging wide bandgap semiconductors. In particular, we have doped isotopically-enriched (13)C diamond and AlGaN films using this method focusing on the (13)C + (1)H -> (14)N + gamma, radiative proton capture resonance at 1.75 MeV and (27)Al + (1)H -> (28)Si + gamma proton capture resonance at 0.997 MeV. Both samples sustained primarily end-of-range damage which was annealable in AlGaN. We have performed a variety of measurements to characterize the doped samples including Raman spectroscopy. STM, and X-ray diffraction on the doped samples which suggest the viability of IBNTD as a doping method. Calculations indicate that doping layer thicknesses of the order of 10 nm are achievable. Possible doping concentrations using this technique are also estimated. (C) 2009 Elsevier B.V. All rights reserved.
C1 [Pravica, Michael G.] Univ Nevada, High Pressure Sci & Engn Ctr HiPSEC, Las Vegas, NV 89154 USA.
[Pravica, Michael G.] Univ Nevada, Dept Phys & Astron, Las Vegas, NV 89154 USA.
[Guardala, Noel A.; Price, Jack L.] Carderock NSWCCD, Naval Surface Warfare Ctr, Bethesda, MD 20817 USA.
RP Pravica, MG (reprint author), Univ Nevada, High Pressure Sci & Engn Ctr HiPSEC, Las Vegas, NV 89154 USA.
EM pravica@physics.unlv.edu
NR 23
TC 0
Z9 0
U1 2
U2 6
PU ELSEVIER SCIENCE SA
PI LAUSANNE
PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND
SN 0925-9635
J9 DIAM RELAT MATER
JI Diam. Relat. Mat.
PD MAY-AUG
PY 2009
VL 18
IS 5-8
BP 846
EP 849
DI 10.1016/j.diamond.2009.01.007
PG 4
WC Materials Science, Multidisciplinary
SC Materials Science
GA 467KG
UT WOS:000267737000036
ER
PT J
AU Adams, JM
Rehill, B
Zhang, YJ
Gower, J
AF Adams, Jonathan M.
Rehill, Brian
Zhang, Yangjian
Gower, Jonathan
TI A test of the latitudinal defense hypothesis: herbivory, tannins and
total phenolics in four North American tree species
SO ECOLOGICAL RESEARCH
LA English
DT Article
DE Tannins; Phenolics; Herbivory; Trees; Latitude; North America
ID SALT-MARSH PLANTS; CONDENSED TANNINS; FOLIAR PHENOLICS;
SEASONAL-CHANGES; CATERPILLARS; PALATABILITY; LEAVES; COMMUNITIES;
DEFOLIATION; TEMPERATE
AB It is widely believed that insect herbivory is less intense at higher latitudes, due to winter mortality which would tend to keep insect herbivores from reaching density-limitation of their populations. One prediction of this theory is that plants should tend to be better defended at lower latitudes. Here we investigated latitudinal trends in herbivory and tannins, in four species of common North American trees. Our comparisons spanned 15A degrees of latitude in Acer rubrum, Fagus grandifolia, and Quercus alba, and 10A degrees latitude in Liquidambar styraciflua. Sun leaves on forest edges were sampled, at phenologically equivalent times of year. Analysis revealed significant differences between populations, including those at similar latitudes, but no significant latitudinal trend in herbivory, condensed and hydrolyzable tannins, or total phenolics measured as Folin-Denis reactives in any of the four species. Our findings contradict the theory that low latitude plants are better defended, in that lower latitude populations of the four tree species showed no greater amounts of phenolics. The possible implications for community ecology are discussed.
C1 [Adams, Jonathan M.; Zhang, Yangjian] Rutgers State Univ, Dept Biol Sci, Newark, NJ 07102 USA.
[Rehill, Brian; Gower, Jonathan] USN Acad, Dept Chem, Annapolis, MD 21402 USA.
RP Adams, JM (reprint author), Rutgers State Univ, Dept Biol Sci, Newark, NJ 07102 USA.
EM jonadams@andromeda.rutgers.edu; rehill@usna.edu
RI Zhang, Yangjian/D-1012-2014
NR 45
TC 25
Z9 29
U1 8
U2 36
PU SPRINGER TOKYO
PI TOKYO
PA 1-11-11 KUDAN-KITA, CHIYODA-KU, TOKYO, 102-0073, JAPAN
SN 0912-3814
J9 ECOL RES
JI Ecol. Res.
PD MAY
PY 2009
VL 24
IS 3
BP 697
EP 704
DI 10.1007/s11284-008-0541-x
PG 8
WC Ecology
SC Environmental Sciences & Ecology
GA 445GC
UT WOS:000266037400022
ER
PT J
AU Cameron, K
Schnusenberg, O
AF Cameron, Ken
Schnusenberg, Oliver
TI Oil prices, SUVs, and Iraq: An investigation of automobile manufacturer
oil price sensitivity
SO ENERGY ECONOMICS
LA English
DT Article
DE Oil prices; Iraq; Fama-French; Automobile manufacturer
ID STOCK-MARKET; VOLATILITY RISK; RETURNS; SHOCKS
AB There has been much speculation about the recent upsurge in crude oil prices and the effect it will have on the economy and business. The objective of this paper is to investigate the relationship between oil prices and stock prices of automobile manufacturers. We add an oil price factor, measured alternatively by the excess change in WTI crude oil prices or the excess return on an energy ETF, to the Fama-French three-factor model over the period March 20, 2001 to September 30, 2008. Our dependent variable is the excess return on a price-weighted index of automobile manufacturers. Results indicate that oil prices add value to the pricing model, particularly for manufacturers specializing in SUVs and for a subperiod following the Iraq invasion on March 19, 2003. Published by Elsevier B.V.
C1 [Schnusenberg, Oliver] Univ N Florida, Coggin Coll Business, Dept Accounting & Finance, Jacksonville, FL 32224 USA.
[Cameron, Ken] USN, Stennis Space Ctr, MS USA.
RP Schnusenberg, O (reprint author), Univ N Florida, Coggin Coll Business, Dept Accounting & Finance, 1 UNF Dr, Jacksonville, FL 32224 USA.
EM oschnuse@unf.edu
NR 21
TC 6
Z9 6
U1 1
U2 11
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0140-9883
J9 ENERG ECON
JI Energy Econ.
PD MAY
PY 2009
VL 31
IS 3
BP 375
EP 381
DI 10.1016/j.eneco.2008.12.003
PG 7
WC Economics
SC Business & Economics
GA 437HV
UT WOS:000265478500006
ER
PT J
AU Schubbe, JJ
AF Schubbe, Joel J.
TI Fatigue crack propagation in 7050-T7451 plate alloy
SO ENGINEERING FRACTURE MECHANICS
LA English
DT Article
DE Aluminum alloys; Fractography; Fracture mechanics; Fatigue crack growth;
Delamination; Mixed mode fracture; Aerospace vehicles
ID BEHAVIOR
AB A study has been accomplished to characterize the fatigue crack growth rates and mechanisms in thin and thick plate commercial 7050-T7451 aluminum plate in the L-S orientation. Crack growth and crack shielding with branching behavior of long, through thickness cracks is examined and compared to L-T and T-L oriented growth data. Compact tension specimens and the compliance method were used to determine crack growth rates. Constant Delta K data showed significant retardation of growth rate curves for the L-S orientation in the range of 10-13 MPa root m where branching and splitting parallel to the load axis are dominant growth mechanisms. Published by Elsevier Ltd.
C1 USN Acad, Dept Mech Engn, Annapolis, MD 21402 USA.
RP Schubbe, JJ (reprint author), USN Acad, Dept Mech Engn, 590 Holloway Rd, Annapolis, MD 21402 USA.
EM Schubbe@usna.edu
FU US Navy; US Air Force
FX This work was supported by the US Navy, the US Air Force and their
respective laboratories. Additional thanks to S.R. Thompson, AFRL/RXSC
for information regarding ongoing 7050 testing.
NR 15
TC 23
Z9 25
U1 4
U2 17
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0013-7944
J9 ENG FRACT MECH
JI Eng. Fract. Mech.
PD MAY
PY 2009
VL 76
IS 8
BP 1037
EP 1048
DI 10.1016/j.engfracmech.2009.01.006
PG 12
WC Mechanics
SC Mechanics
GA 454BN
UT WOS:000266656700005
ER
PT J
AU Kimmel, DG
Miller, WD
Harding, LW
Houde, ED
Roman, MR
AF Kimmel, David G.
Miller, W. David
Harding, Lawrence W., Jr.
Houde, Edward D.
Roman, Michael R.
TI Estuarine Ecosystem Response Captured Using a Synoptic Climatology
SO ESTUARIES AND COASTS
LA English
DT Article
DE Synoptic climatology; Large-scale climate indices; Estuary; Chesapeake
Bay; Multiple trophic levels
ID NORTH-ATLANTIC OSCILLATION; SAN-FRANCISCO BAY; LONG-TERM TRENDS;
FRESH-WATER INPUT; CHESAPEAKE-BAY; CHRYSAORA-QUINQUECIRRHA; SEA NETTLE;
EL-NINO; MESOZOOPLANKTON DYNAMICS; FISH PRODUCTION
AB Estuarine and coastal ecosystems respond strongly to proximate climate forcing. In this study, we present a regional, synoptic climatology as an approach to classify weather patterns that generate interannual variability in coastal and estuarine ecosystems. Synoptic climatology is a method that classifies sea level pressure data into distinct patterns representing common weather features for a specified region. A synoptic climatology was developed for the eastern United States and used to quantify surface conditions affecting Chesapeake Bay during wet and dry years. In a synthesis analysis, several mechanisms were identified that explained the link between weather patterns and ecosystem structure, principal among them is the delivery of freshwater to the Bay during spring. Wet and dry years were characterized by shifts in biogeography of the Chesapeake Bay. The shifts resulted from habitat changes and trophic interactions and included the timing and magnitude of the spring phytoplankton bloom, the distribution/abundance of mesozooplankton and gelatinous zooplankton, and juvenile indices of fish. Synoptic climatology resolved regional weather variability at a spatial scale not strongly controlled by larger-scale climate indices and explained ecosystem responses in Chesapeake Bay.
C1 [Kimmel, David G.] E Carolina Univ, Dept Biol, Inst Coastal Sci & Policy, Greenville, NC 27858 USA.
[Kimmel, David G.; Miller, W. David; Harding, Lawrence W., Jr.; Houde, Edward D.; Roman, Michael R.] Univ Maryland, Ctr Environm Sci, Horn Point Lab, Cambridge, MD 21613 USA.
[Miller, W. David] USN, Res Lab, Natl Res Council, Washington, DC 20375 USA.
[Houde, Edward D.] Univ Maryland, Ctr Environm Sci, Chesapeake Biol Lab, Solomons, MD 20688 USA.
RP Kimmel, DG (reprint author), E Carolina Univ, Dept Biol, Inst Coastal Sci & Policy, Greenville, NC 27858 USA.
EM kimmeld@ecu.edu
RI roman, michael/F-9425-2013; Houde, Edward/D-8498-2012; Kimmel,
David/A-9643-2012;
OI Kimmel, David/0000-0001-7232-7801; Miller, W. David/0000-0002-4940-5987
FU National Science Foundation Land Margin Ecosystem Research Program
[DEB-9412133]; Sloan Foundation Census of Marine Life Program
[2001-3-8]; United States Environmental Protection Agency Science to
Achieve Results Program [R82867701]; National Aeronautics and Space
Administration (NASA) [NAG5-11302]; Maryland Sea [NA05AR417042NOAA];
National Oceanic and Atmospheric Administration Coastal Ocean Program
[NA17OP2656]; NASA Graduate Student Research Program [NGTS-30485]; UMCES
[4252]
FX We thank the captains and crew of the R/V Cape Henlopen and the pilots
and crew of the Chesapeake Bay Remote Sensing Program. We also thank B.
Yarnal and R. Wood for the advice on synoptic climatology. This research
was funded by the National Science Foundation Land Margin Ecosystem
Research Program (DEB-9412133), Sloan Foundation Census of Marine Life
Program (2001-3-8), United States Environmental Protection Agency
Science to Achieve Results Program (R82867701), National Aeronautics and
Space Administration (NASA) component (NAG5-11302), Maryland Sea Grant
(NA05AR417042NOAA), National Oceanic and Atmospheric Administration
Coastal Ocean Program (NA17OP2656), and NASA Graduate Student Research
Program (NGTS-30485). This is UMCES contribution # 4252.
NR 45
TC 24
Z9 24
U1 0
U2 9
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 1559-2723
J9 ESTUAR COAST
JI Estuaries Coasts
PD MAY
PY 2009
VL 32
IS 3
BP 403
EP 409
DI 10.1007/s12237-009-9147-y
PG 7
WC Environmental Sciences; Marine & Freshwater Biology
SC Environmental Sciences & Ecology; Marine & Freshwater Biology
GA 431CI
UT WOS:000265038500001
ER
PT J
AU Afifi, S
Karsany, MS
Wasfy, M
Pimentel, G
Marfin, A
Hajjeh, R
AF Afifi, S.
Karsany, M. S.
Wasfy, M.
Pimentel, G.
Marfin, A.
Hajjeh, R.
TI Laboratory-based surveillance for patients with acute meningitis in
Sudan, 2004-2005
SO EUROPEAN JOURNAL OF CLINICAL MICROBIOLOGY & INFECTIOUS DISEASES
LA English
DT Article
ID ACUTE BACTERIAL-MENINGITIS; STREPTOCOCCUS-PNEUMONIAE;
NEISSERIA-MENINGITIDIS; HAEMOPHILUS-INFLUENZAE; PCR; CHILDREN;
EPIDEMICS; DIAGNOSIS
AB To determine the burden of bacterial meningitis and characterize its epidemiology, a laboratory-based surveillance was established in five hospitals in Sudan. Hospital personnel were trained in basic surveillance and bacteriology techniques. Positive cerebrospinal fluid (CSF) cultures were confirmed at Sudan National Laboratories and U.S. Naval Medical Research Unit No. 3. Additionally, 126 frozen CSF samples from culture-negative meningitis cases were tested by polymerase chain reaction (PCR). Of 1,830 suspected meningitis cases enrolled, 75% were less than 5 years old and 63% were males. Of these, 149 (8%) were culture-confirmed, including 121 (81%) Neisseria meningitidis; 18 (12%) Streptococcus pneumoniae, and 10 (7%) Haemophilus influenzae. Of 440 turbid specimens, 132 (30%) were culture-positive. Of the 126 samples from culture-negative meningitis cases that were tested, only 18 (14%) were classified as turbid on gross examination, yet 63 (50%) were positive by PCR. This study suggests that PCR may be useful to more accurately define the burden of disease in epidemic setting. Maintaining laboratory-based surveillance allows evidence-based decision-making and helps monitor the impact of new vaccines introduction.
C1 [Karsany, M. S.] Fed Minist Hlth, Natl Publ Hlth Lab, Khartoum, Sudan.
[Afifi, S.] USN, Med Res Unit 3, Global Dis Detect & Response Program GDDRP, New York, NY 09835 USA.
RP Afifi, S (reprint author), USN, Med Res Unit 3, Global Dis Detect & Response Program GDDRP, PSC 452 Box 5000, New York, NY 09835 USA.
EM salma.afifi.eg@med.navy.mil
RI Valle, Ruben/A-7512-2013;
OI Pimentel, Guillermo/0000-0003-2464-1526
FU NAMRU-3 Institutional Review Board [NAMRU-3.2004.004, CPHS : 150];
Sudanese Ministry of Health authorities; DoD GEIS
[847705.82000.25GB.E0018]; CDC-International Emerging Infections Program
FX This study was approved by the NAMRU-3 Institutional Review Board
(Protocol # DoD NAMRU-3.2004.004; CPHS #: 150) and Sudanese Ministry of
Health authorities in compliance with all federal regulations governing
the protection of human subjects. This work was supported by DoD GEIS
Work Unit Number 847705.82000.25GB.E0018 and the CDC-International
Emerging Infections Program. We are grateful to Dr. Amy V Bode, U. S.
Naval Medical Research Unit No. 3, for critically reading the
manuscript.
NR 31
TC 3
Z9 3
U1 0
U2 0
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 0934-9723
J9 EUR J CLIN MICROBIOL
JI Eur. J. Clin. Microbiol. Infect. Dis.
PD MAY
PY 2009
VL 28
IS 5
BP 429
EP 435
DI 10.1007/s10096-008-0643-y
PG 7
WC Infectious Diseases; Microbiology
SC Infectious Diseases; Microbiology
GA 450ZI
UT WOS:000266440100001
PM 19002729
ER
PT J
AU Mungan, CE
AF Mungan, Carl E.
TI Internal ballistics of a pneumatic potato cannon
SO EUROPEAN JOURNAL OF PHYSICS
LA English
DT Article
AB Basic laws of thermodynamics and mechanics are used to analyse an air gun. Such devices are often employed in outdoor physics demonstrations to launch potatoes using compressed gas that is here assumed to expand reversibly and adiabatically. Reasonable agreement is found with reported muzzle speeds for such homebuilt cannons. The treatment is accessible to undergraduate students who have taken calculus-based introductory physics.
C1 USN Acad, Dept Phys, Annapolis, MD 21402 USA.
RP Mungan, CE (reprint author), USN Acad, Dept Phys, Annapolis, MD 21402 USA.
EM mungan@usna.edu
NR 8
TC 4
Z9 4
U1 4
U2 10
PU IOP PUBLISHING LTD
PI BRISTOL
PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND
SN 0143-0807
J9 EUR J PHYS
JI Eur. J. Phys.
PD MAY
PY 2009
VL 30
IS 3
BP 453
EP 457
DI 10.1088/0143-0807/30/3/003
PG 5
WC Education, Scientific Disciplines; Physics, Multidisciplinary
SC Education & Educational Research; Physics
GA 438UO
UT WOS:000265581100003
ER
PT J
AU Jones, KD
Platzer, MF
AF Jones, Kevin D.
Platzer, Max F.
TI Design and development considerations for biologically inspired
flapping-wing micro air vehicles
SO EXPERIMENTS IN FLUIDS
LA English
DT Article
AB In this paper, the decade of numerical and experimental investigations leading to the development of the authors' unique flapping-wing micro air vehicle is summarized. Early investigations included the study of boundary layer energization by means of a small flapping foil embedded in a flat-plate boundary layer, the reduction of the recirculatory flow region behind a backward-facing step by means of a small flapping foil, and the reduction or suppression of flow separation behind blunt or cusped airfoil trailing edges by flapping a small foil located in the wake flow region. These studies were followed by systematic investigations of the aerodynamic characteristics of single flapping airfoils and airfoil combinations. These unsteady flows were described using flow visualization, laser-Doppler velocimetry in addition to panel and Navier-Stokes computations. It is then shown how this flapping-wing database was used to conceive, design and develop a micro air vehicle which has a fixed wing for lift and two flapping wings for thrust generation. While animal flight is characterized by a coupled force generation, the present design appears to separate lift and thrust. However, in fact, the performance of one surface is closely coupled to the other surfaces.
C1 [Jones, Kevin D.; Platzer, Max F.] USN, Postgrad Sch, Monterey, CA USA.
RP Jones, KD (reprint author), USN, Postgrad Sch, Monterey, CA USA.
EM jones@nps.edu; mplatzer@nps.edu
FU Office of Naval Research
FX We are grateful for the support received from Spiro Lekoudis of the
Office of Naval Research, with project monitors Peter Majumdar and Edwin
Rood, and from Richard Foch, head of the Vehicle Research Section of the
Naval Research Laboratory, with project monitors Kevin Ailinger, Jill
Dahlburg and James Kellogg. We would also like to acknowledge the
contributions of Jiannwoei Yue, Claus Dohring, Joseph Lai, John Young,
Jason Papadopoulos and Chris Bradshaw.
NR 25
TC 15
Z9 15
U1 1
U2 12
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 0723-4864
J9 EXP FLUIDS
JI Exp. Fluids
PD MAY
PY 2009
VL 46
IS 5
BP 799
EP 810
DI 10.1007/s00348-009-0654-1
PG 12
WC Engineering, Mechanical; Mechanics
SC Engineering; Mechanics
GA 442ZT
UT WOS:000265880700005
ER
PT J
AU Knutson, EM
AF Knutson, Elizabeth M.
TI On Being Heard: A Study of Listening Behavior in French Conversation
SO FRENCH REVIEW
LA English
DT Article
ID RESPONSES; JAPANESE; ENGLISH
AB Through various verbal and non-verbal backchannel cues, a listener signals attention or other reactions to an interlocutor who has the floor. This article reports findings of a qualitative research study of five informal conversations between ten different native speakers of French with a focus on the context and nature of listener feedback, and specifically backchannel response. Analysis of the data yields an inventory of utterances used to demonstrate interest and attention, information on the categories and functions of verbal backchanneling, and an appreciation of listening as engagement in French conversation. Pedagogical implications of the research are discussed, with suggestions for instructional activities to raise awareness of culture-specific aspects of listening behavior.
C1 USN Acad, Annapolis, MD 21402 USA.
RP Knutson, EM (reprint author), USN Acad, Annapolis, MD 21402 USA.
NR 39
TC 0
Z9 0
U1 0
U2 0
PU AMER ASSOC TEACHERS FRENCH
PI CARBONDALE
PA MAILCODE 4510, SOUTHERN ILLINOIS UNIV, CARBONDALE, IL 62901-4510 USA
SN 0016-111X
EI 2329-7131
J9 FR REV
JI Fr. Rev.
PD MAY
PY 2009
VL 82
IS 6
BP 1180
EP +
PG 15
WC Literature, Romance
SC Literature
GA 444HN
UT WOS:000265971500005
ER
PT J
AU Nisenoff, M
Pond, JM
AF Nisenoff, Martin
Pond, Jeffrey M.
TI Superconductors and Microwaves
SO IEEE MICROWAVE MAGAZINE
LA English
DT Article
C1 [Nisenoff, Martin] M Nisenoff Associates, Minneapolis, MN 55403 USA.
[Pond, Jeffrey M.] USN, Res Lab, Microwave Technol Branch, Elect Sci & Technol Div, Washington, DC 20375 USA.
RP Nisenoff, M (reprint author), M Nisenoff Associates, 1201 Yale Pl,Suite 1004, Minneapolis, MN 55403 USA.
EM m.nisenoff@ieee.org; jeff.pond@nrl.navy.mil
NR 14
TC 2
Z9 3
U1 0
U2 3
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855 USA
SN 1527-3342
J9 IEEE MICROW MAG
JI IEEE Microw. Mag.
PD MAY
PY 2009
VL 10
IS 3
BP 84
EP 95
DI 10.1109/MMM.2009.932077
PG 12
WC Engineering, Electrical & Electronic; Telecommunications
SC Engineering; Telecommunications
GA 435XF
UT WOS:000265375900009
ER
PT J
AU Nguyen, KT
Pasour, JA
Antonsen, TM
Larsen, PB
Petillo, JJ
Levush, B
AF Nguyen, Khanh T.
Pasour, John A.
Antonsen, Thomas M., Jr.
Larsen, Paul B.
Petillo, John J.
Levush, Baruch
TI Intense Sheet Electron Beam Transport in a Uniform Solenoidal Magnetic
Field
SO IEEE TRANSACTIONS ON ELECTRON DEVICES
LA English
DT Article
DE Amplifier; beam transport; Brillouin flow; diocotron instability;
(E)over-right-arrow x (B)over-right-arrow drift; periodic permanent
magnet (PPM); sheet beam; solenoidal magnetic field
ID DESIGN; GUN
AB In this paper, the transport of intense sheet electron beams in a uniform solenoidal magnetic field in high-power vacuum electronic devices is theoretically examined with the 3-D beam optics code MICHELLE. It is shown that a solenoidal magnetic field can be an effective transport mechanism for sheet electron beams, provided the beam tunnel is matched to the beam shape, and vice versa. The advantage of solenoidal magnetic field transport relative to periodic magnetic transport resides in the feasibility of transporting higher current density beams due to the higher average field strength achievable in practice and the lower susceptibility to field errors from mechanical misalignments. In addition, a solenoidally transported electron beam is not susceptible to voltage cutoff as in a periodic magnetic focusing system; hence, device efficiency is potentially higher.
C1 [Nguyen, Khanh T.] Beam Wave Res Inc, Bethesda, MD 20814 USA.
[Pasour, John A.; Larsen, Paul B.; Levush, Baruch] USN, Res Lab, Washington, DC 20375 USA.
[Antonsen, Thomas M., Jr.] Univ Maryland, Inst Res Elect & Appl Phys, College Pk, MD 20740 USA.
[Petillo, John J.] Sci Applicat Int Corp, Billerica, MA 01821 USA.
RP Nguyen, KT (reprint author), Beam Wave Res Inc, Bethesda, MD 20814 USA.
EM knguyen@estd.nrl.navy.mil
RI Antonsen, Thomas/D-8791-2017
OI Antonsen, Thomas/0000-0002-2362-2430
FU Office of Naval Research
FX This work was supported by the Office of Naval Research. The review of
this paper was arranged by W. Menninger.
NR 14
TC 42
Z9 46
U1 0
U2 11
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855 USA
SN 0018-9383
J9 IEEE T ELECTRON DEV
JI IEEE Trans. Electron Devices
PD MAY
PY 2009
VL 56
IS 5
BP 744
EP 752
DI 10.1109/TED.2009.2015420
PG 9
WC Engineering, Electrical & Electronic; Physics, Applied
SC Engineering; Physics
GA 440PO
UT WOS:000265712400007
ER
PT J
AU Abe, DK
Pershing, DE
Nguyen, KT
Myers, RE
Wright, EL
Wood, FN
Eisen, EL
Chernyavskiy, IA
Vlasov, AN
Levush, B
AF Abe, David K.
Pershing, Dean E.
Nguyen, Khanh T.
Myers, Robert E.
Wright, Edward L.
Wood, Franklin N.
Eisen, Edward L.
Chernyavskiy, Igor A.
Vlasov, Alexander N.
Levush, Baruch
TI Experimental Study and Analysis of an S-Band Multiple-Beam Klystron With
6% Bandwidth
SO IEEE TRANSACTIONS ON ELECTRON DEVICES
LA English
DT Article
DE Broadband; large-signal klystron code; multiple-beam klystron (MBK);
vacuum electronics
ID MICROWAVE DEVICES; CODE TESLA; SIMULATION
AB We present experimental results and analyses of an eight-beam five-cavity multiple-beam klystron (MBK) operating at a center frequency of similar to 3.2 GHz. The device met its performance goals in its first hardware implementation, generating a peak RF output power of 600 kW and a 3-dB bandwidth of similar to 6%. The circuit was modeled with TESLA, a 2.5-D large-signal klystron/MBK code that was extended to enable simulations of the low-Q multiple-gap cavities used to increase the bandwidth. Details of the model and underlying theory are described, and the simulation results are compared with experimental measurements. The good agreement between the model and the experiment provides a validation for our tools and techniques that will be used in the design of future devices.
C1 [Abe, David K.; Wood, Franklin N.; Levush, Baruch] USN, Res Lab, Washington, DC 20375 USA.
[Pershing, Dean E.; Nguyen, Khanh T.; Myers, Robert E.; Wright, Edward L.] Beam Wave Res Inc, Bethesda, MD 20814 USA.
[Eisen, Edward L.] Commun & Power Ind Inc, Microwave Power Prod Div, Palo Alto, CA 94304 USA.
[Chernyavskiy, Igor A.; Vlasov, Alexander N.] Sci Applicat Int Corp, Mclean, VA 22102 USA.
RP Abe, DK (reprint author), USN, Res Lab, Washington, DC 20375 USA.
EM david.abe@nrl.navy.mil
RI Abe, David/D-7546-2013
FU U.S. Office of Naval Research
FX This work was supported in part by the U.S. Office of Naval Research.
NR 11
TC 2
Z9 4
U1 1
U2 5
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855 USA
SN 0018-9383
J9 IEEE T ELECTRON DEV
JI IEEE Trans. Electron Devices
PD MAY
PY 2009
VL 56
IS 5
BP 846
EP 854
DI 10.1109/TED.2009.2015627
PG 9
WC Engineering, Electrical & Electronic; Physics, Applied
SC Engineering; Physics
GA 440PO
UT WOS:000265712400021
ER
PT J
AU Calame, JP
Levush, B
AF Calame, Jeffrey P.
Levush, Baruch
TI Impact of Nonlinear Memory Effects on Digital Communications in a
Klystron
SO IEEE TRANSACTIONS ON ELECTRON DEVICES
LA English
DT Article; Proceedings Paper
CT 7th IEEE International Vacuum Electronics Conference (IVEC)/6th IEEE
International Vacuum Electron Sources Conference (IVESC)
CY APR 25-27, 2006
CL Monterey, CA
SP IEEE Electron Devices Soc
DE Distortion; klystron; nonlinearity; phase-shift keying (PSK)
ID TRAVELING-WAVE TUBE; INTERSYMBOL INTERFERENCE; SIMULATION; DISTORTION;
MODEL; BEAM
AB Nonlinear memory effects in a klystron and their impact on digital communications are investigated using a time-domain physics-based model. The simulation results are compared to an idealized block model based on the frequency response and amplitude/phase drive curves typically used in system design with vacuum electronic amplifiers. Significant departures in transient behavior are noted in the physics-based model in comparison to the block model when the klystron is at or near saturation, provided that the signal bandwidth is simultaneously large (>= similar to 65% of the klystron output cavity bandwidth). Such nonlinear memory effects exist for pure amplitude, pure phase, and mixed transients of both the step and ramp variety. The effects of these nonlinear phenomena on 16-state phase-shift keying (16-PSK) digital communications waveforms (with preequalized symbols) are examined using symbol constellation diagrams and symbol error rate (SER) plots. Operation at saturation with signal bandwidths of 32%, 65%, and 93% of the klystron output cavity bandwidth, for a bit-energy-based signal-to-noise ratio of 18 dB, yields SER values of 2.0 x 10(-5), 2.3 x 10(-4), and 2.7 x 10(-3), respectively, in comparison to the ideal 16-PSK value of 1.1 x 10(-5).
C1 [Calame, Jeffrey P.; Levush, Baruch] USN, Res Lab, Washington, DC 20375 USA.
RP Calame, JP (reprint author), USN, Res Lab, Washington, DC 20375 USA.
EM jeffrey.calame@nrl.navy.mil
NR 29
TC 1
Z9 1
U1 1
U2 6
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855 USA
SN 0018-9383
J9 IEEE T ELECTRON DEV
JI IEEE Trans. Electron Devices
PD MAY
PY 2009
VL 56
IS 5
BP 855
EP 863
DI 10.1109/TED.2009.2015804
PG 9
WC Engineering, Electrical & Electronic; Physics, Applied
SC Engineering; Physics
GA 440PO
UT WOS:000265712400022
ER
PT J
AU Chernyavskiy, IA
Abe, DK
Levush, B
AF Chernyavskiy, Igor A.
Abe, David K.
Levush, Baruch
TI Detailed Analysis of the Interception Current Predicted by the
Large-Signal Code TESLA for an Experimental Multiple-Beam Klystron
SO IEEE TRANSACTIONS ON ELECTRON DEVICES
LA English
DT Article
DE Body current; large-signal code; modeling and simulation; multiple-beam
klystron (MBK)
ID S-BAND; SIMULATION
AB We present the results of detailed modeling of an experimental eight-beam four-cavity Multiple-beam klystron (MBK) with an emphasis on the effects related to the circuit interception current. The parallel version of the 2.5-D large-signal code TESLA was used as the principal analysis tool. The primary MBK model used eight nonidentical beams/beam tunnels run in eight parallel processes using the measured values of R/Q on each gap of each beam tunnel. The simulation results are compared with the available experimental data and show good agreement between the calculations and measurements, including the predicted level of threshold RF drive power at the first appearance of body current. Additional modeling was performed using a less accurate approximation where all eight beams/beam tunnels were assumed to have identical properties. The results of the two different modeling approaches are analyzed in detail and compared with each other to determine the limits on the accuracy of the respective models.
C1 [Chernyavskiy, Igor A.] Sci Applicat Int Corp, Mclean, VA 22102 USA.
[Abe, David K.; Levush, Baruch] USN, Res Lab, Washington, DC 20375 USA.
RP Chernyavskiy, IA (reprint author), Sci Applicat Int Corp, Mclean, VA 22102 USA.
EM igor.a.chernyavskiy@saic.com; david.abe@nrl.navy.mil;
levush@estd.nrl.navy.mil
RI Abe, David/D-7546-2013
FU U.S. Office of Naval Research (ONR)
FX This work was supported by the U.S. Office of Naval Research (ONR).
NR 9
TC 1
Z9 1
U1 1
U2 6
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855 USA
SN 0018-9383
J9 IEEE T ELECTRON DEV
JI IEEE Trans. Electron Devices
PD MAY
PY 2009
VL 56
IS 5
BP 877
EP 882
DI 10.1109/TED.2009.2015419
PG 6
WC Engineering, Electrical & Electronic; Physics, Applied
SC Engineering; Physics
GA 440PO
UT WOS:000265712400025
ER
PT J
AU Nguyen, KT
Wright, EL
Pershing, DE
Abe, DK
Petillo, JJ
Levush, B
AF Nguyen, Khanh T.
Wright, Edward L.
Pershing, Dean E.
Abe, David K.
Petillo, John J.
Levush, Baruch
TI Broadband High-Power 18-Beam S-Band Klystron Amplifier Design
SO IEEE TRANSACTIONS ON ELECTRON DEVICES
LA English
DT Article
DE Amplifier; broadband; collector; high perveance; klystron; multiple
beam; multiple-beam klystron (MBK)
ID MULTIPLE-BEAM KLYSTRON; ELECTRON-GUN
AB Fundamental-mode multiple-beam klystrons (MBKs) offer the potential of high power and broad bandwidth with low noise at low beam voltages in a compact amplifier form factor. This paper presents the design approach and methodology for an S-band MBK. This amplifier will be driven by a newly developed 41.6-A 42-kV 18-beam electron gun. The high total beam perveance permits the circuit design to achieve a peak power of 670 kW in S-band and a corresponding I-dB bandwidth of 13% (16% at 3-dB). The high beam perveance, however, requires special considerations in the common collector design, particularly with respect to the spent modulated electron beams. To fully account for the impact of the time-varying beam current, the time-dependent 3-D gun/collector code MICHELLE was employed for this collector design.
C1 [Nguyen, Khanh T.; Wright, Edward L.; Pershing, Dean E.] Beam Wave Res Inc, Bethesda, MD 20814 USA.
[Abe, David K.; Levush, Baruch] USN, Res Lab, Washington, DC 20375 USA.
[Petillo, John J.] Sci Applicat Int Corp, Billerica, MA 01821 USA.
RP Nguyen, KT (reprint author), Beam Wave Res Inc, Bethesda, MD 20814 USA.
EM knguyen@estd.nrl.navy.mil
RI Abe, David/D-7546-2013
NR 13
TC 4
Z9 5
U1 0
U2 4
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855 USA
SN 0018-9383
J9 IEEE T ELECTRON DEV
JI IEEE Trans. Electron Devices
PD MAY
PY 2009
VL 56
IS 5
BP 883
EP 890
DI 10.1109/TED.2009.2015411
PG 8
WC Engineering, Electrical & Electronic; Physics, Applied
SC Engineering; Physics
GA 440PO
UT WOS:000265712400026
ER
PT J
AU Dialetis, D
Chernin, D
Antonsen, TM
Levush, B
AF Dialetis, Demos
Chernin, David
Antonsen, Thomas M., Jr.
Levush, Baruch
TI Accurate Representation of Attenuation in Helix TWT Simulation Codes
SO IEEE TRANSACTIONS ON ELECTRON DEVICES
LA English
DT Article; Proceedings Paper
CT 9th IEEE International Vacuum Electronics Conference
CY APR 22-24, 2008
CL Monterey, CA
SP IEEE Electron Devices Soc
DE Attenuation; simulation; traveling-wave tube (TWT)
ID TRAVELING-WAVE TUBE; PROPAGATION
AB We report on the results of a study that compares an ad hoc model of circuit attenuation used in helix traveling-wave tube (TWT) simulation codes with the exact small-signal theory of a beam interacting with a slow wave supported by a sheath helix in the presence of loss in order to ascertain whether attenuation is treated with sufficient accuracy by the model used in those codes. This study was motivated in part by the fact that losses in both dielectrics and metals generally increase with increasing operating frequency, making the accuracy of the model a potential concern for millimeter-wave helix TWT design. Our basic conclusion is that the ad hoc model is sufficiently accurate for attenuation rates up to a few decibels per pitch in cases that we have studied. For much larger attenuation rates, as may occur in a sever region, accuracy can be improved by taking into account the (quadratic) dependence of the cold circuit phase velocity on the attenuation rate.
C1 [Dialetis, Demos; Chernin, David; Antonsen, Thomas M., Jr.] Sci Applicat Int Corp, Mclean, VA 22102 USA.
[Antonsen, Thomas M., Jr.] Univ Maryland, Inst Res Elect & Appl Phys, College Pk, MD 20742 USA.
[Levush, Baruch] USN, Res Lab, Washington, DC 20375 USA.
RP Dialetis, D (reprint author), Sci Applicat Int Corp, Mclean, VA 22102 USA.
EM chernind@saic.com
RI Antonsen, Thomas/D-8791-2017
OI Antonsen, Thomas/0000-0002-2362-2430
NR 10
TC 7
Z9 8
U1 0
U2 5
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855 USA
SN 0018-9383
J9 IEEE T ELECTRON DEV
JI IEEE Trans. Electron Devices
PD MAY
PY 2009
VL 56
IS 5
BP 935
EP 944
DI 10.1109/TED.2009.2015647
PG 10
WC Engineering, Electrical & Electronic; Physics, Applied
SC Engineering; Physics
GA 440PO
UT WOS:000265712400033
ER
PT J
AU Abe, DK
Kishek, RA
Petillo, JJ
Chernin, DP
Levush, B
AF Abe, David K.
Kishek, Rami A.
Petillo, John J.
Chernin, David P.
Levush, Baruch
TI Periodic Permanent-Magnet Quadrupole Focusing Lattices for Linear
Electron-Beam Amplifier Applications
SO IEEE TRANSACTIONS ON ELECTRON DEVICES
LA English
DT Article; Proceedings Paper
CT 35th IEEE International Conference on Plasma Science
CY JUN 15-19, 2008
CL Karlsruhe, GERMANY
SP IEEE Nucl & Plasma Sci Soc, Plasma Sci & Appl Comm
DE Electron beam; linear beam; permanent magnet; quadrupole; vacuum
electronics
ID DESIGN; GUN
AB Periodic lattices of permanent-magnet quadrupoles (PMQs) have the potential to provide the strong focusing necessary to transport high-current space-charge-dominated electron beams commonly used in vacuum electronic power amplifiers. We describe a new design methodology and computational tools to produce optimized PMQ lattices, verifying the results with fully 3-D particle simulations of design examples. These examples include a PMQ system with a greater than fivefold reduction in magnet weight and volume compared with a periodic permanent-magnet (PPM) stack designed for a comparable beam and a PMQ system that can stably transport a factor of three times more current than a comparable PPM system. We conclude with a simple analysis of the interaction between the elliptical beam in the PMQ lattice with the waves on a helical traveling-wave circuit. In addition to enabling higher RF power operation, we show that the higher beam currents afforded by PMQ focusing enable a higher power gain per unit length and result in more compact form factors and higher amplifier power densities compared with comparable PPM-focused circuits.
C1 [Abe, David K.; Levush, Baruch] USN, Res Lab, Washington, DC 20375 USA.
[Kishek, Rami A.; Petillo, John J.; Chernin, David P.] Sci Applicat Int Corp, Mclean, VA 22102 USA.
[Kishek, Rami A.] Univ Maryland, Inst Res Elect & Appl Phys, College Pk, MD 20742 USA.
RP Abe, DK (reprint author), USN, Res Lab, Washington, DC 20375 USA.
EM david.abe@nrl.navy.mil
RI Abe, David/D-7546-2013
NR 17
TC 3
Z9 3
U1 0
U2 4
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855 USA
SN 0018-9383
J9 IEEE T ELECTRON DEV
JI IEEE Trans. Electron Devices
PD MAY
PY 2009
VL 56
IS 5
BP 965
EP 973
DI 10.1109/TED.2009.2015629
PG 9
WC Engineering, Electrical & Electronic; Physics, Applied
SC Engineering; Physics
GA 440PO
UT WOS:000265712400037
ER
PT J
AU Richter, A
Khan, S
AF Richter, Anke
Khan, Sinan
TI Pilot Model: Judging Alternate Modes of Dispensing Prophylaxis in Los
Angeles County
SO INTERFACES
LA English
DT Article
DE bioterrorism planning; public health; decision analysis; application;
multicriteria decision making
AB In large metropolitan areas such as Los Angeles County (LAC), public health departments must supplement their traditional methods of dispensing prophylaxis to the general public in their jurisdictions during mass biological and chemical events. Although many alternate modes of dispensing are being discussed, a quantitative model to compare their relative advantages and disadvantages does not exist. We use multicriteria decision analysis to help the LAC Department of Public Health (DPH) assess the trade-offs associated with these alternate modes of dispensing oral prophylaxis. We found that one of the most hyped methods (drive-thru dispensing) is not a good choice for LAC. Our baseline analysis shows that the top two alternatives, dispensing through commercial pharmacies and dispensing through the United States Postal Service, are equally effective. Either alternative would be acceptable; the final decision could be made on either legal or political grounds. Our analysis provided the DPH with much insight into to its decision problem. It could become part of the justification of proposals for alternate dispensing plans to the Centers for Disease Control and Prevention. In addition, the DPH has hired a consulting firm to pursue business participation, including commercial pharmacies, for dispensing mass prophylaxis.
C1 [Richter, Anke] USN, Def Resources Management Inst, Postgrad Sch, Monterey, CA 93943 USA.
[Khan, Sinan] Los Angeles Cty Dept Publ Hlth, Emergency Preparedness & Response Program, Los Angeles, CA 90005 USA.
RP Richter, A (reprint author), USN, Def Resources Management Inst, Postgrad Sch, Monterey, CA 93943 USA.
EM arichter@nps.edu; sikhan@ph.lacounty.gov
RI Richter, Anke/I-9050-2012
NR 34
TC 6
Z9 6
U1 0
U2 3
PU INFORMS
PI HANOVER
PA 7240 PARKWAY DR, STE 310, HANOVER, MD 21076-1344 USA
SN 0092-2102
J9 INTERFACES
JI Interfaces
PD MAY-JUN
PY 2009
VL 39
IS 3
BP 228
EP 240
DI 10.1287/inte.1080.0427
PG 13
WC Management; Operations Research & Management Science
SC Business & Economics; Operations Research & Management Science
GA 456ET
UT WOS:000266824600009
ER
PT J
AU Baker, BM
Kidwell, ME
Kline, RP
Popovici, I
AF Baker, B. M.
Kidwell, M. E.
Kline, R. P.
Popovici, I.
TI ON TWO-DIMENSIONAL DYNAMICAL SYSTEMS ASSOCIATED WITH MEMBRANE KINETICS
UNDERLYING CARDIAC ARRHYTHMIAS
SO INTERNATIONAL JOURNAL OF BIFURCATION AND CHAOS
LA English
DT Article
DE Piecewise smooth dynamical systems; cardiac arrhythmia; alternans;
costability of orbits
ID SKEW TENT MAPS; PURKINJE-FIBERS; VENTRICULAR-ARRHYTHMIAS;
ELECTRICAL-ACTIVITY; CHAOTIC DYNAMICS; INTERVAL; ACTIVATION; ALTERNANS;
HEART; MODEL
AB We study the orbits, stability and coexistence of orbits in the two-dimensional dynamical system introduced by Kline and Baker to model cardiac rhythmic response to periodic stimulation as a function of (a) kinetic parameters (two amplitudes, two rate constants) and (b) stimulus period. The original paper focused mostly on the one-dimensional version of this model (one amplitude, one rate constant), whose orbits, stability properties, and bifurcations were analyzed via the theory of skew-tent (hence unimodal) maps; the principal family of orbits were so-called "n-escalators", with n a positive integer.
The two-dimensional analog (motivated by experimental results) has led to the current study of continuous, piecewise smooth maps of a polygonal planar region into itself, whose dynamical behavior includes the coexistence of stable orbits. Our principal results show (1) how the amplitude parameters control which escalators can come into existence, (2) escalator bifurcation behavior as the stimulus period is lowered-leading to a "1/n bifurcation law", and (3) the existence of basins of attraction via the coexistence of three orbits (two of them stable, one unstable) at the first (largest stimulus period) bifurcation. We consider the latter result our most important, as it is conjectured to be connected with arrhythmia.
C1 [Baker, B. M.; Kidwell, M. E.; Popovici, I.] USN Acad, Dept Math, Annapolis, MD 21402 USA.
[Kline, R. P.] Columbia Univ, Dept Pharmocol & Stat, New York, NY 10032 USA.
RP Baker, BM (reprint author), USN Acad, Dept Math, Annapolis, MD 21402 USA.
EM bmb@usna.edu; mek@usna.edu; rpk1@columbia.edu; popovici@usna.edu
NR 23
TC 1
Z9 1
U1 2
U2 4
PU WORLD SCIENTIFIC PUBL CO PTE LTD
PI SINGAPORE
PA 5 TOH TUCK LINK, SINGAPORE 596224, SINGAPORE
SN 0218-1274
EI 1793-6551
J9 INT J BIFURCAT CHAOS
JI Int. J. Bifurcation Chaos
PD MAY
PY 2009
VL 19
IS 5
BP 1709
EP 1732
DI 10.1142/S0218127409023792
PG 24
WC Mathematics, Interdisciplinary Applications; Multidisciplinary Sciences
SC Mathematics; Science & Technology - Other Topics
GA 485LK
UT WOS:000269123200005
ER
PT J
AU Kanaus, S
Fan, F
Jiang, Y
Vasudevan, AK
AF Kanaus, S.
Fan, F.
Jiang, Y.
Vasudevan, A. K.
TI An experimental investigation of fatigue crack growth of stainless steel
304L
SO INTERNATIONAL JOURNAL OF FATIGUE
LA English
DT Article
DE Fatigue crack growth; Experimental data; Stainless steel; Stress
intensity factor
ID MARTENSITIC-TRANSFORMATION; DEFORMATION; PROPAGATION; INITIATION;
INTERFACE; OVERLOAD; MODEL
AB A series of fatigue crack growth experiments were conducted using round compact tension specimens of AISI 304L stainless steel under Mode I loading. The influences of the R-ratio (the ratio of the minimum load to the maximum applied load in a cycle), notch size, the tensile and compressive overloads, and the loading sequence on crack growth were studied. The results show that the material displays sensitivity to the R-ratio. The application of a tensile overload results in a short period of acceleration in the crack growth rate followed by a significant retardation in the crack growth rate. A compressive overload (underload) produces a short period of acceleration in crack growth and the magnitude of such an acceleration depends on the value of the loading amplitude of the constant-amplitude loading. Results from the two-step high-low loading sequence reveal a period of crack growth retardation at the beginning of the lower amplitude step, an effect similar to that of a single overload. Two existing crack growth models which are based on the stress intensity factor concept are evaluated using the experimental results. A two-parameter crack driving force approach together with a modified Wheeler's model is found to correlate well the crack growth experiments. (C) 2008 Elsevier Ltd. All rights reserved.
C1 [Kanaus, S.; Fan, F.; Jiang, Y.] Univ Nevada, Dept Mech Engn 312, Reno, NV 89557 USA.
[Vasudevan, A. K.] Off Naval Res, Arlington, VA 22203 USA.
RP Jiang, Y (reprint author), Univ Nevada, Dept Mech Engn 312, Reno, NV 89557 USA.
EM yjiang@unr.edu
RI Jiang, Yanyao/H-1816-2012;
OI Jiang, Yanyao/0000-0002-1977-4669; Fan, Feifei/0000-0003-0455-4900;
Kalnaus, Sergiy/0000-0002-7465-3034
NR 23
TC 17
Z9 19
U1 0
U2 12
PU ELSEVIER SCI LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
SN 0142-1123
J9 INT J FATIGUE
JI Int. J. Fatigue
PD MAY
PY 2009
VL 31
IS 5
BP 840
EP 849
DI 10.1016/j.ijfatigue.2008.11.004
PG 10
WC Engineering, Mechanical; Materials Science, Multidisciplinary
SC Engineering; Materials Science
GA 421JK
UT WOS:000264355000005
ER
PT J
AU Jordan, PM
Feuillade, C
AF Jordan, P. M.
Feuillade, C.
TI Wave structure in Stokes' second problem for a dusty, second-grade gas
SO INTERNATIONAL JOURNAL OF NON-LINEAR MECHANICS
LA English
DT Article
DE Second-grade fluids; Dusty gases; Stokes' first and second problems;
Oldroyd B liquids; Dipolar fluids
ID DIPOLAR FLUID; FLAT-PLATE; FLOW; STABILITY; MODEL
AB Stokes' second problem for a dusty second-grade gas, assumed incompressible, is considered. Exact solutions for both the gas and dust phases are determined and examined. In addition, low- and high-frequency asymptotic results are presented for the main propagation parameters, limitations imposed by the continuum assumption are determined, and special cases of the coefficients are noted. Finally, Stokes' first problem for a dusty second-grade gas is briefly considered and we then apply our findings to an issue regarding dipolar fluids. Published by Elsevier Ltd.
C1 [Jordan, P. M.; Feuillade, C.] USN, Res Lab, Stennis Space Ctr, MS 39529 USA.
RP Jordan, PM (reprint author), USN, Res Lab, Stennis Space Ctr, MS 39529 USA.
EM pjordan@nrlssc.navy.mil
FU CNR/NRL [PE 061153N]
FX The authors are indebted to Prof. K.R. Rajagopal and the anonymous
referee for their extremely helpful suggestions. The authors would also
like to thank Drs. Stanley A. Chin-Bing and Edward R. Franchi for their
encouragement and support. This research was supported by CNR/NRL
funding (PE 061153N).
NR 38
TC 1
Z9 1
U1 1
U2 4
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0020-7462
J9 INT J NONLIN MECH
JI Int. J. Non-Linear Mech.
PD MAY
PY 2009
VL 44
IS 4
BP 383
EP 388
DI 10.1016/j.ijnonlinmec.2009.01.003
PG 6
WC Mechanics
SC Mechanics
GA 442CS
UT WOS:000265818000005
ER
PT J
AU Nichols, JM
Marzocca, P
Milanese, A
AF Nichols, J. M.
Marzocca, P.
Milanese, A.
TI The trispectrum for Gaussian driven, multiple degree-of-freedom,
non-linear structures
SO INTERNATIONAL JOURNAL OF NON-LINEAR MECHANICS
LA English
DT Article
DE Trispectrum; Higher-order-spectra; Cumulants; Volterra series;
Non-linearity
ID ORDER; SPECTRA; SYSTEMS
AB Higher-order spectra have become a useful tool in spectral analysis, particularly for identifying the presence and type of system non-linearity. Two such spectra that have figured prominently in signal processing are the bispectrum and trispectrum. In a previous work. the authors developed ail analytical solution for the bispectrum for multi-degree-of-freedom systems. Here this analysis is extended to the trispectrum. Specifically, an expression is developed for the trispectrum of a multi-degree-of-freedom system subject to Gaussian excitation applied at ail arbitrary location. The analytical expression is compared to those obtained via estimation using the direct method. Published by Elsevier Ltd.
C1 [Nichols, J. M.] USN, Res Lab, Washington, DC 20375 USA.
[Marzocca, P.; Milanese, A.] Clarkson Univ, Dept Mech & Aeronaut Engn, Potsdam, NY 13699 USA.
RP Nichols, JM (reprint author), USN, Res Lab, 4555 Overlook Ave, Washington, DC 20375 USA.
EM jonathan.nichols@nrl.navy.mil
NR 16
TC 9
Z9 9
U1 0
U2 1
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0020-7462
J9 INT J NONLIN MECH
JI Int. J. Non-Linear Mech.
PD MAY
PY 2009
VL 44
IS 4
BP 404
EP 416
DI 10.1016/j.ijnonlinmec.2009.01.008
PG 13
WC Mechanics
SC Mechanics
GA 442CS
UT WOS:000265818000008
ER
PT J
AU Kemp, BE
AF Kemp, Barbara E.
TI Access, Delivery, Performance: The Future of Libraries Without Walls: A
Festschrift to Celebrate the Work of Professor Peter Brophy
SO JOURNAL OF ACADEMIC LIBRARIANSHIP
LA English
DT Book Review
C1 [Kemp, Barbara E.] USN Acad, Nimitz Lib, Annapolis, MD 21402 USA.
RP Kemp, BE (reprint author), USN Acad, Nimitz Lib, 589 McNair Rd, Annapolis, MD 21402 USA.
EM bkemp@usna.edu
RI Kemp, Barbara/B-1116-2011
NR 1
TC 0
Z9 0
U1 0
U2 2
PU ELSEVIER SCIENCE INC
PI NEW YORK
PA 360 PARK AVE SOUTH, NEW YORK, NY 10010-1710 USA
SN 0099-1333
J9 J ACAD LIBR
JI J. Acad. Librariansh.
PD MAY
PY 2009
VL 35
IS 3
BP 284
EP 284
DI 10.1016/j.acalib.2009.03.016
PG 1
WC Information Science & Library Science
SC Information Science & Library Science
GA 452AY
UT WOS:000266513200013
ER
PT J
AU Murray, WG
AF Murray, William G.
TI Convergence and Collaboration of Campus Information Services
SO JOURNAL OF ACADEMIC LIBRARIANSHIP
LA English
DT Book Review
C1 [Murray, William G.] USN Acad, Dept Syst, Nimitz Lib, Annapolis, MD 21402 USA.
RP Murray, WG (reprint author), USN Acad, Dept Syst, Nimitz Lib, Annapolis, MD 21402 USA.
EM murray@usna.edu
NR 1
TC 0
Z9 0
U1 0
U2 1
PU ELSEVIER SCIENCE INC
PI NEW YORK
PA 360 PARK AVE SOUTH, NEW YORK, NY 10010-1710 USA
SN 0099-1333
J9 J ACAD LIBR
JI J. Acad. Librariansh.
PD MAY
PY 2009
VL 35
IS 3
BP 286
EP 286
DI 10.1016/j.acalib.2009.03.020
PG 1
WC Information Science & Library Science
SC Information Science & Library Science
GA 452AY
UT WOS:000266513200017
ER
PT J
AU Twigg, ME
Picard, YN
AF Twigg, M. E.
Picard, Y. N.
TI Simulation and analysis of electron channeling contrast images of
threading screw dislocations in 4H-SiC
SO JOURNAL OF APPLIED PHYSICS
LA English
DT Article
ID SURFACE STRESS-RELAXATION; DIFFRACTION; MICROSCOPY; PATTERNS;
BACKSCATTERING; CRYSTALS; GAN
AB Using methods developed for modeling diffraction contrast of extended defects in thin foils, electron intensity profiles are simulated and found to qualitatively match channeling contrast of threading screw dislocations (TSDs) experimentally recorded by electron channeling contrast imaging (ECCI) using scanning electron microscopy. Plan-view images of TSDs axially penetrating (0001) 4H-SiC surfaces were computed using the Sturkey scattering matrix approach incorporating surface relaxation effects. Simulated diffraction contrast of the TSD allows identification of these threading defects as well as facilitates the determination of the dislocation Burgers vector. The directionality of TSD contrast features, simulated for various Bragg reflections and deviation parameters, is consistent with both ECCI and diffraction contrast imaging by transmission electron microscopy. Topographically enhanced imaging of atomic step spirals, generated by the TSDs, provides a direct determination of the TSD Burgers vector, which is shown to agree with the simulated ECCI contrast. The convergence of the incident electron beam is also shown to influence channeling contrast. [DOI:10.1063/1.3110086]
C1 [Twigg, M. E.; Picard, Y. N.] USN, Res Lab, Div Elect Sci & Technol, Washington, DC 20375 USA.
RP Twigg, ME (reprint author), USN, Res Lab, Div Elect Sci & Technol, Washington, DC 20375 USA.
EM twigg@estd.nrl.navy.mil
OI Picard, Yoosuf/0000-0002-2853-5213
FU Office of Naval Research and the National Research Council
FX We would like to thank Professor Marc De Graef of Carnegie Mellon
University for advice in using his FORTRAN programs (from the suite of
programs associated with his textbook) for calculating anomalous and
normal absorption and implementing the Sturkey scattering matrix
formalism. We are also indebted to P. G. Neudeck, A. J. Trunek, and J.
A. Powell of NASA Glenn Research Center for providing specially
engineered 4H-SiC mesa substrates. We are also grateful for financial
support from the Office of Naval Research and the National Research
Council.
NR 31
TC 14
Z9 14
U1 1
U2 8
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 MAY 1
PY 2009
VL 105
IS 9
AR 093520
DI 10.1063/1.3110086
PG 8
WC Physics, Applied
SC Physics
GA 448LE
UT WOS:000266263300046
ER
PT J
AU Karle, IL
Butcher, RJ
Rajesh, YBRD
Ranganathan, S
AF Karle, Isabella L.
Butcher, Raymond J.
Rajesh, Y. B. R. D.
Ranganathan, Subramania
TI Crystal Engineering: A Salt of Mellitate Ion, MA(-2), with Hydronium,
H3O+, Containing pi-pi Stacks of Neutral Phenazine, PZ, in the Crystal
SO JOURNAL OF CHEMICAL CRYSTALLOGRAPHY
LA English
DT Article
DE Mellitic acid-hydronium salt; Neutral phenazine; Self-assembly; pi-pi
interaction; Crystal structure
ID HYDROGEN-BONDS; ANIONS; ACID
AB The structure of the benznenehexacarboxylic acid (mellitic acid, MA)-phenanthroline (PL) complex (MA(-2) 2PL(+1)) consisting of infinite stacks of phenanthroline separated for optimum pi-pi interactions and sandwiched between MA ribbons suggested a design of models with more significant pi-pi interactions to produce conducting materials. Phenazine (9,10-diazaanthracene) was considered as a promising choice. The X-ray structure of the complex (MA(1)-PZ(4)) from MA(-2) and neutral PZ was a major surprise since the complex was not only radically different from MA-PL but also the MA exhibited the rare direct interaction with the base PZ. In a novel arrangement, a continuous chain formed by the linking of the peri carboxylic groups of MA(-2) mediated with hydronium ions, H3O+, supports a 4-fold arrangement of four phenazine molecules where four carboxylic groups are engaged in hydrogen bond formation with one of the nitrogens of each PZ. The running chain of MA(-2) supports the formation of stacks of phenazine molecules which are separated by similar to 3.39-3.60 A, well suited for pi-pi overlap. The proximal placement of such threaded modules enables their transformation to layered stacks thus possibly enhancing their pi-pi interactions. Crystal structure parameters are: sp. gr. C2/c, a = 13.2819(23) angstrom, b = 11.3669(20) angstrom, c = 33.3757(57) angstrom, b = 96.515(3), R-1 = 0.0521 for 4,198 data (I > 2 sigma(I)) and wR(2) = 0.0828 for all 6,194 data.
C1 [Karle, Isabella L.] USN, Res Lab, Struct Matter Lab, Washington, DC 20375 USA.
[Butcher, Raymond J.] Howard Univ, Dept Chem, Washington, DC 20059 USA.
[Rajesh, Y. B. R. D.; Ranganathan, Subramania] Indian Inst Chem Technol, Discovery Lab, Hyderabad 500607, Andhra Pradesh, India.
RP Karle, IL (reprint author), USN, Res Lab, Struct Matter Lab, Code 6030,4555 Overlook Ave SW, Washington, DC 20375 USA.
EM isabella.karle@nrl.navy.mil
RI G, Neela/H-3016-2014
FU Department of Biotechnology, New Delhi; Naval Research Laboratory
FX SR and Rajesh are most grateful to the Department of Biotechnology, New
Delhi, for generous financial assistance. We thank the Office of Naval
Research for supporting the work at the Naval Research Laboratory.
NR 6
TC 0
Z9 0
U1 1
U2 4
PU SPRINGER/PLENUM PUBLISHERS
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 1074-1542
J9 J CHEM CRYSTALLOGR
JI J. Chem. Crystallogr.
PD MAY
PY 2009
VL 39
IS 5
BP 309
EP 314
DI 10.1007/s10870-008-9468-x
PG 6
WC Crystallography; Spectroscopy
SC Crystallography; Spectroscopy
GA 423GD
UT WOS:000264483900001
ER
PT J
AU MacMahan, J
Brown, J
Thornton, E
AF MacMahan, Jamie
Brown, Jeff
Thornton, Ed
TI Low-Cost Handheld Global Positioning System for Measuring Surf-Zone
Currents
SO JOURNAL OF COASTAL RESEARCH
LA English
DT Article
DE Drifter; GPS; surf zone; currents; Lagrangian currents; rip currents
ID GPS; NEARSHORE; ACCURACY; DRIFTERS
AB Low-cost, handheld, L1 (1575.42 MHz) global positioning systems (GPSs) provide scientists with the opportunity to acquire position and velocity estimates at reduced expense (order of [O]$100), size (similar to cell phone), weight (O[70 g]), and engineering time. Two different low-cost, handheld GPS units and four different position-correcting configurations are evaluated here to deter-mine their practicality in measuring surf-zone currents. Three of the simpler configurations result in relative position and velocity errors of O(2 in) and O(0.5 in s(-1)) for stationary tests. Surf-zone position and velocity signal-to-noise spectral ratios for the three configurations suggest that only motions <0.01 Hz can be confidently estimated for these surf-zone systems. For the fourth configuration, a GPS handheld unit that internally records GPS carrier phase is postprocessed using more sophisticated software for position corrections to obtain absolute position and velocity estimates. Simple modifications are required to improve the position accuracy by reducing patch antenna signal multipathing. For this configuration, the absolute position error for dynamic surveys was similar to 0.40 in, and the velocity error on land relative to a survey-grade GPS system was 0.01 m s(-1). The handheld GPS was attached to a surf-zone drifter and evaluated in the field. The flow field of a rip-current system was obtained with 24 surf-zone drifters. The drifters tracked simultaneous dye releases well, verifying that the observations are valid Lagrangian estimates. Owing to the low cost and small size of the handheld GPS, a large number of drifter systems can be deployed for absolute position tracking and velocity estimates of surf-zone currents.
C1 [MacMahan, Jamie; Thornton, Ed] USN, Postgrad Sch, Dept Oceanog, Monterey, CA 93943 USA.
[Brown, Jeff] Univ Delaware, Ctr Appl Coastal Res, Newark, DE 19716 USA.
RP MacMahan, J (reprint author), USN, Postgrad Sch, Dept Oceanog, Monterey, CA 93943 USA.
EM jhmacmah@nps.edu
FU ONR [N00014-05-1-0154, N00014-05-1-0352, N0001407WR20226,
N0001408WR20006]; National Science Foundation [0728324]; Delaware Sea
Grant, University of Delaware and ONR [N0001407WR20226,
N0001408WR20006]; California State Coastal Conservancy [04-034]
FX We extend our appreciation to the many folks who assisted in obtaining
drifter data set: Jenna Brown, Ad "Mellow" Reniers, Tim Stanton, Edie
Gallagher, Jim Stockel, Rob Wyland, Keith Wyckoff, Ron Cowen, Natalie
Lauder, Mark Orzech, Nick Dodd, Jim Lambert, and Lance Valenzuela. We
appreciate the initial drogue construction by Ian Johnston, an
undergraduate summer intern, who was supported by the Department of
Civil Engineering at the University of Delaware. This work was funded
through the Office of Naval Research (ONR) Coastal Geosciences Program,
Delaware Sea Grant, National Science Foundation, and California State
Coastal Conservancy. J. MacMaban was supported by ONR contract
N00014-05-1-0154, N00014-05-1-0352, N0001407WR20226, N0001408WR20006,
and the National Science Foundation OCE 0728324. J. Brown was supported
by the Delaware Sea Grant, University of Delaware and ONR
N0001407WR20226, N0001408WR20006. E. Thornton was supported by ONR
N0001407WR20226. Supporting video observations was funded in part by the
California State Coastal Conservancy as part of the Coastal Ocean
Circulation Monitoring Program-Northern California under contract
#04-034. We thank the two anonymous reviewers and the JCR Editor,
Charlie Finki, for the manuscript suggestions.
NR 13
TC 44
Z9 44
U1 1
U2 7
PU COASTAL EDUCATION & RESEARCH FOUNDATION
PI LAWRENCE
PA 810 EAST 10TH STREET, LAWRENCE, KS 66044 USA
SN 0749-0208
EI 1551-5036
J9 J COASTAL RES
JI J. Coast. Res.
PD MAY
PY 2009
VL 25
IS 3
BP 744
EP 754
DI 10.2112/08-1000.1
PG 11
WC Environmental Sciences; Geography, Physical; Geosciences,
Multidisciplinary
SC Environmental Sciences & Ecology; Physical Geography; Geology
GA 447HN
UT WOS:000266182300018
ER
PT J
AU Mastro, MA
Maximenko, S
Gowda, M
Simpkins, BS
Pehrsson, PE
Long, JP
Makinen, AJ
Freitas, JA
Hite, JK
Eddy, CR
Kim, J
AF Mastro, M. A.
Maximenko, S.
Gowda, M.
Simpkins, B. S.
Pehrsson, P. E.
Long, J. P.
Makinen, A. J.
Freitas, J. A., Jr.
Hite, J. K.
Eddy, C. R., Jr.
Kim, J.
TI Nature of luminescence and strain in gallium nitride nanowires
SO JOURNAL OF CRYSTAL GROWTH
LA English
DT Article; Proceedings Paper
CT 2nd International Symposium on Growth of III Nitrides (ISGN-2)
CY JUL 07-09, 2008
CL Laforet Shuzenji, JAPAN
SP Japanese Assoc Crystal Growth Cooperat
DE Stresses; Gallium compounds; Nanomaterials; Semiconducting gallium
compounds
ID MISMATCHED SEMICONDUCTOR-MATERIALS; VAPOR-PHASE EPITAXY; GROWTH; GAN;
NANOHETEROEPITAXY; SI
AB Photo- and cathodo-luminescence measurements of a variable-diameter ensemble of GaN nanowires revealed a diameter-dependent, spectral emission distribution between 350 nm and 850 nm. Spectral analysis indicated that wires with a diameter less than 400 nm were dominated by a yellow luminescence with a weaker near UV/violet emission also present. Examination of this ensemble showed that there was a general trend in the ratio of near-UV-to-yellow emission intensities with increasing nanowire diameter. Additionally, a broad green emission appears in the nanowires with a diameter above approximately 200 nm. A calculation based on the nanoheteroepitaxy model indicates that this diameter represents a transitional thickness where strain is relieved by defect formation mechanisms with a characteristic green emission. Published by Elsevier B.V.
C1 [Mastro, M. A.; Maximenko, S.; Gowda, M.; Simpkins, B. S.; Pehrsson, P. E.; Long, J. P.; Makinen, A. J.; Freitas, J. A., Jr.; Hite, J. K.; Eddy, C. R., Jr.] USN, Res Lab, Washington, DC 20375 USA.
[Gowda, M.] George Mason Univ, Fairfax, VA 22030 USA.
[Kim, J.] Korea Univ, Dept Chem & Biol Engn, Seoul 136701, South Korea.
RP Mastro, MA (reprint author), USN, Res Lab, 4555 Overlook Ave SW, Washington, DC 20375 USA.
EM michael.mastro@nrl.navy.mil; hyunhyun7@korea.ac.kr
RI Kim, Jihyun/F-6940-2013; Hite, Jennifer/L-5637-2015
OI Hite, Jennifer/0000-0002-4090-0826
NR 23
TC 4
Z9 4
U1 0
U2 13
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0022-0248
J9 J CRYST GROWTH
JI J. Cryst. Growth
PD MAY 1
PY 2009
VL 311
IS 10
BP 2982
EP 2986
DI 10.1016/j.jcrysgro.2009.01.053
PG 5
WC Crystallography; Materials Science, Multidisciplinary; Physics, Applied
SC Crystallography; Materials Science; Physics
GA 461WG
UT WOS:000267302900057
ER
PT J
AU Stine, R
Petrovykh, DY
AF Stine, R.
Petrovykh, D. Y.
TI Oriented self-assembled monolayers of bifunctional molecules on InAs
SO JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA
LA English
DT Article
DE X-ray photoelectron spectroscopy; Indium arsenide; Thiol; Self-assembled
monolayers; Bifunctional; Oriented; Functionalization
ID RAY PHOTOELECTRON-SPECTROSCOPY; BARE SEMICONDUCTOR SURFACES;
SULFUR-PASSIVATED INAS; GAAS SURFACE; ELECTRONIC-PROPERTIES;
THERMAL-STABILITY; ALKANETHIOLS; GAAS(100); THIOLS; ADSORPTION
AB We describe the formation and characterization of oriented self-assembled monolayers (SAMs) of bifunctional molecules on InAs. Cysteamine, a small molecule with thiol and amine termini, can be efficiently deposited on InAs(001) from a basic aqueous solution. Analysis of the deposited films using X-ray photoelectron spectroscopy (XPS) reveals that cysteamine forms a monolayer, in which molecules are oriented and attached to the InAs surface exclusively via their thiol termini. The free amine ligands presented at the interface of the resulting oriented SAM should provide a convenient pathway for subsequent surface functionalization. In addition. cysteamine deposition efficiently removes InAs native oxides; the resulting cysteamine SAM provides surface passivation, protecting the InAs substrate from reoxidation after short-term exposures to air and aqueous solutions. (C) 2009 Elsevier EIN. All rights reserved.
C1 [Stine, R.; Petrovykh, D. Y.] USN, Res Lab, Washington, DC 20375 USA.
[Petrovykh, D. Y.] Univ Maryland, Dept Phys, College Pk, MD 20742 USA.
RP Petrovykh, DY (reprint author), USN, Res Lab, Code 6176,4555 Overlook Ave SW, Washington, DC 20375 USA.
EM dmitri.petrovykh@nrl.navy.mil
RI Petrovykh, Dmitri/A-3432-2008; Stine, Rory/C-6709-2013
OI Petrovykh, Dmitri/0000-0001-9089-4076;
FU Defense Threat Reduction Agency (DTRA); Office of Naval Research (ONR);
Air Force Office of Scientific Research (AFOSR)
FX R.S. acknowledges the support of an ASEE Postdoctoral Research
Associateship. This work was funded by the Defense Threat Reduction
Agency (DTRA) joint Science and Technology Office for Chemical and
Biological Defense, the Office of Naval Research (ONR), and the Air
Force Office of Scientific Research (AFOSR).
NR 44
TC 28
Z9 28
U1 3
U2 14
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0368-2048
J9 J ELECTRON SPECTROSC
JI J. Electron Spectrosc. Relat. Phenom.
PD MAY
PY 2009
VL 172
IS 1-3
BP 42
EP 46
DI 10.1016/j.elspec.2009.02.001
PG 5
WC Spectroscopy
SC Spectroscopy
GA 465DH
UT WOS:000267561500007
ER
PT J
AU Gannon, AJ
Hobson, GV
AF Gannon, A. J.
Hobson, G. V.
TI Pre-Stall Instability Distribution Over a Transonic Compressor Rotor
SO JOURNAL OF FLUIDS ENGINEERING-TRANSACTIONS OF THE ASME
LA English
DT Article; Proceedings Paper
CT 53rd ASME Turbo Expo 2008
CY JUN 09-13, 2008
CL Berlin, GERMANY
SP Int Gas Turbine Inst, ASME
DE transonic compressor; near-stall operation; nonaxisymmetric flows
AB An investigation of the behavior of a transonic compressor rotor when operating close to stall is presented. The specific areas of interest are the behavior and location of low-frequency instabilities close to stall. In running close to stall, compressors can begin to exhibit nonperiodic flow between the blade passages even when appearing to be operating in a stable steady-state condition. The data from the current rotor clearly show that low-frequency instabilities were present during steady-state operation when stall was approached. These frequencies are not geometrically fixed to the rotor and typically appear at 0.3-0.8 of the rotor speed. The presence of these low-frequency instabilities is known and detection is reasonably commonplace; however, attempts to quantify the location and strength of these instabilities as stall is approached have proved difficult. In the current test fast response pressure sensors were positioned in the case-wall; upstream, downstream, and over the rotor blade tips. Simultaneous data from the sensors were taken at successive steady-state settings with each being closer to stall. A time domain analysis of the data investigates the magnitude of the instabilities and their transient effect on the relative inlet flow angle. The data are also presented in the frequency domain to show the development and distribution of the instabilities over the rotor as stall was approached. Initially the instabilities appeared within the rotor row and extended downstream but at operation closer to stall they began to protrude upstream as well. The greatest amplitude of the instabilities was within the blade row in the complex flow region that contains phenomena such as the tip-vortex/normal-shock interaction and the shock/boundary-layer interaction. In addition as stall is approached the growth of the instabilities is nonlinear and not confined to one frequency. [DOI: 10.1115/1.3112388]
C1 [Gannon, A. J.; Hobson, G. V.] Naval Postgrad Sch, Turbopropuls Lab, Monterey, CA 93943 USA.
RP Gannon, AJ (reprint author), Naval Postgrad Sch, Turbopropuls Lab, Monterey, CA 93943 USA.
RI Gannon, Anthony/E-9598-2017
OI Gannon, Anthony/0000-0002-4602-4396
NR 11
TC 2
Z9 2
U1 0
U2 1
PU ASME-AMER SOC MECHANICAL ENG
PI NEW YORK
PA THREE PARK AVE, NEW YORK, NY 10016-5990 USA
SN 0098-2202
J9 J FLUID ENG-T ASME
JI J. Fluids Eng.-Trans. ASME
PD MAY
PY 2009
VL 131
IS 5
AR 051106
DI 10.1115/1.3112388
PG 11
WC Engineering, Mechanical
SC Engineering
GA 437KH
UT WOS:000265485900006
ER
PT J
AU Kang, W
Ross, IM
Pham, K
Gong, Q
AF Kang, Wei
Ross, I. Michael
Pham, Khanh
Gong, Qi
TI Autonomous Observability of Networked Multisatellite Systems
SO JOURNAL OF GUIDANCE CONTROL AND DYNAMICS
LA English
DT Article
AB The focus of this paper is on the development of observability theory and estimation algorithms for multisatellite systems. The results could have applications in space missions that require minimum support from ground control centers and other systems such as the Global Positioning System. The main results consist of 1) the observability of two satellites, either cooperative or noncooperative, using relative measurements only, 2) a computational method for networked multiagent systems to check the observability using their topologies of communication and sensor network, 3) an unscented Kalman filter for the estimation of orbits, positions, and velocities using relative measurements, and 4) simulations on the observability of satellite systems, including a scenario of two satellites and, in another simulation, a networked multisatellite constellation with random communication interruptions.
C1 [Kang, Wei] USN, Postgrad Sch, Dept Appl Math, Monterey, CA 93943 USA.
[Ross, I. Michael] USN, Postgrad Sch, Dept Mech & Astronaut Engn, Monterey, CA 93943 USA.
[Pham, Khanh] USAF, Res Lab, Spacc Vehicles Directorate, Kirtland AFB, NM 87117 USA.
[Gong, Qi] Univ Calif Santa Cruz, Dept Appl Math, Santa Cruz, CA 95064 USA.
RP Kang, W (reprint author), USN, Postgrad Sch, Dept Appl Math, Monterey, CA 93943 USA.
EM wkang@nps.edu; imross@nps.edu; Khanh.Pham@kirtland.af.mil
NR 13
TC 4
Z9 6
U1 0
U2 4
PU AMER INST AERONAUT ASTRONAUT
PI RESTON
PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091-4344 USA
SN 0731-5090
J9 J GUID CONTROL DYNAM
JI J. Guid. Control Dyn.
PD MAY-JUN
PY 2009
VL 32
IS 3
BP 869
EP 877
DI 10.2514/1.38826
PG 9
WC Engineering, Aerospace; Instruments & Instrumentation
SC Engineering; Instruments & Instrumentation
GA 445NL
UT WOS:000266057400015
ER
PT J
AU Kim, JJ
Agrawal, BN
AF Kim, Jae Jun
Agrawal, Brij N.
TI Automatic Mass Balancing of Air-Bearing-Based Three-Axis Rotational
Spacecraft Simulator
SO JOURNAL OF GUIDANCE CONTROL AND DYNAMICS
LA English
DT Article; Proceedings Paper
CT AIAA Guidance, Navigation, and Control Conference
CY AUG 21-24, 2006
CL Keystone, CO
AB Air-bearing-based spacecraft simulators are widely used to develop and verify spacecraft control techniques required by modern spacecraft applications. To create a spacelike environment with ground spacecraft simulators, the effects of gravity should be minimized. For a spherical air-hearing system with 3 rotational degrees of freedom, the center of rotation of the spacecraft simulator should be exactly aligned with the center of gravity. This paper presents the automatic mass balancing method, which compensates for the center of gravity offset from the center of rotation by actuating three proof masses on linear motion stages. Adaptive control of the automatic mass balancing system is used while the balancing masses are actuated in real time. The proposed techniques are implemented on the ground-based three-axis spacecraft simulator for the bifocal relay mirror spacecraft.
C1 [Kim, Jae Jun; Agrawal, Brij N.] USN, Postgrad Sch, Dept Mech & Astronaut Engn, Monterey, CA 93943 USA.
RP Kim, JJ (reprint author), USN, Postgrad Sch, Dept Mech & Astronaut Engn, Monterey, CA 93943 USA.
NR 24
TC 16
Z9 23
U1 0
U2 12
PU AMER INST AERONAUT ASTRONAUT
PI RESTON
PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091-4344 USA
SN 0731-5090
J9 J GUID CONTROL DYNAM
JI J. Guid. Control Dyn.
PD MAY-JUN
PY 2009
VL 32
IS 3
BP 1005
EP 1017
DI 10.2514/1.34437
PG 13
WC Engineering, Aerospace; Instruments & Instrumentation
SC Engineering; Instruments & Instrumentation
GA 445NL
UT WOS:000266057400027
ER
PT J
AU Gong, Q
Lewis, LR
Ross, IM
AF Gong, Qi
Lewis, L. R.
Ross, I. Michael
TI Pseudospectral Motion Planning for Autonomous Vehicles
SO JOURNAL OF GUIDANCE CONTROL AND DYNAMICS
LA English
DT Article
ID UNDERACTUATED SHIP; OPTIMIZATION; ALGORITHM; TRACKING
C1 [Gong, Qi] Univ Calif Santa Cruz, Dept Appl Math & Stat, Santa Cruz, CA 95064 USA.
[Lewis, L. R.; Ross, I. Michael] USN, Postgrad Sch, Dept Mech & Astronaut Engn, Monterey, CA 93943 USA.
RP Gong, Q (reprint author), Univ Calif Santa Cruz, Dept Appl Math & Stat, Santa Cruz, CA 95064 USA.
EM qigong@soe.ucsc.edu
NR 36
TC 12
Z9 13
U1 0
U2 4
PU AMER INST AERONAUT ASTRONAUT
PI RESTON
PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091-4344 USA
SN 0731-5090
J9 J GUID CONTROL DYNAM
JI J. Guid. Control Dyn.
PD MAY-JUN
PY 2009
VL 32
IS 3
BP 1039
EP 1045
DI 10.2514/1.39697
PG 7
WC Engineering, Aerospace; Instruments & Instrumentation
SC Engineering; Instruments & Instrumentation
GA 445NL
UT WOS:000266057400033
ER
PT J
AU Calame, JP
Park, D
Bass, R
Myers, RE
Safier, PN
AF Calame, J. P.
Park, D.
Bass, R.
Myers, R. E.
Safier, P. N.
TI Investigation of Hierarchically Branched-Microchannel Coolers Fabricated
by Deep Reactive Ion Etching for Electronics Cooling Applications
SO JOURNAL OF HEAT TRANSFER-TRANSACTIONS OF THE ASME
LA English
DT Article
DE microchannel cooler; constructal theory; fractal geometry; constructal
trees; electronic cooling; single phase; forced convection; GaN; SiC
ID HEAT-TRANSFER; THERMAL MANAGEMENT; FLUID-FLOW; CHANNEL NETWORKS;
PRESSURE-DROP; TREE; CONVECTION; POWER; NETS; GAN
AB The removal of high heat fluxes from BeO ceramic and GaN-on-SiC semiconductor dies using hierarchically branched-microchannel coolers is investigated, in order to examine the impact of the number of branching levels on performance. The microchannel coolers are made by lithography and deep reactive ion etching of single crystal silicon. The test dies contain a dc-operated resistive zone that approximates the spatially averaged heat flux that would appear in low-temperature cofired ceramic microwave circuit packages and in monolithic microwave integrated circuits. For the particular geometric constraints selected for the study (three source/exhaust channels, similar to 5 X similar to 5 mm(2) die footprint, 200 mu m deep channels in a 400 mu m thick silicon wafer), the optimum performance is achieved with three hierarchical levels of branched-channel size. A heat flux of 1.5 kW/cm(2) is removed from the 3.6 X 4.7 mm(2) resistive zone of the BeO-based die, at a surface temperature of 203 C. When attached instead to a high thermal conductivity GaN-on-SiC die with a 1.2 X 5 mm(2) resistive zone, a heat flux of 3.9 kW/cm2 is removed from the resistive zone at 198 C surface temperature. The total water flow rate is 275 ml/min in both situations. The experimental results are found to be in reasonable agreement with finite element simulations based on idealized estimates of convection coefficients within the channels. For the three-channel size configuration, an effective heat transfer coefficient in the range of 12.2-13.4 W/cm(2) K (with respect to a 20 degrees C bulk fluid temperature) is inferred to be present on the top of the microchannel cooler, based on simulations and derived values obtained from the experimental data.
C1 [Calame, J. P.; Park, D.; Bass, R.] USN, Res Lab, Div Elect Sci & Technol, Washington, DC 20375 USA.
[Myers, R. E.] ATK Mission Res, Newington, VA 22122 USA.
[Safier, P. N.] S&J Solut LLC, Alexandria, VA 22314 USA.
RP Calame, JP (reprint author), USN, Res Lab, Div Elect Sci & Technol, Code 6843,4555 Overlook Ave SW, Washington, DC 20375 USA.
EM jeffrey.calame@nrl.navy.mil
FU Office of Naval Research
FX This work was supported by the Office of Naval Research.
NR 38
TC 8
Z9 9
U1 1
U2 9
PU ASME
PI NEW YORK
PA TWO PARK AVE, NEW YORK, NY 10016-5990 USA
SN 0022-1481
EI 1528-8943
J9 J HEAT TRANS-T ASME
JI J. Heat Transf.-Trans. ASME
PD MAY
PY 2009
VL 131
IS 5
AR 051401
DI 10.1115/1.3001017
PG 9
WC Thermodynamics; Engineering, Mechanical
SC Thermodynamics; Engineering
GA 421QW
UT WOS:000264374400003
ER
PT J
AU Dell, RF
Royset, JO
Zyngiridis, I
AF Dell, Robert F.
Royset, Johannes O.
Zyngiridis, Ioannis
TI OPTIMIZING CONTAINER MOVEMENTS USING ONE AND TWO AUTOMATED STACKING
CRANES
SO JOURNAL OF INDUSTRIAL AND MANAGEMENT OPTIMIZATION
LA English
DT Article
CT 13th Latin-Ibero-American Conference on Operations Research
CY 2006
CL Montevideo, URUGUAY
DE maritime container terminal; storage yard operations; automated stacking
crane scheduling; integer linear programming
ID EXPORT CONTAINERS; ROUTING ALGORITHM; TERMINALS; DEPLOYMENT; EQUIPMENT;
SPACE; YARDS
AB Productivity of a seaport depends, in part, on stacking cranes working in blocks of its storage yard. Each container leaving a block must be moved by a storage-yard crane to a buffer zone during a specific time window so it can reach its destination on time. Containers entering a block for storage must be moved out of the bufferzone sufficiently soon to avoid overflow. In this paper, we formulate integer linear programs to prescribe movements to transport and stack containers in storageyards using one and two equally-sized Automated Stacking Cranes (ASCs) working with straddle carriers. Using real world data, we construct test problems varying both the number of container bays and fullness of the block. We find that one ASC working alone requires upto 70% more time than two ASCs working together to accomplish the same container movements. Optimal solutions of the integer linear programs are typically obtained in only a few seconds.
C1 [Dell, Robert F.; Royset, Johannes O.] USN, Postgrad Sch, Dept Operat Res, Monterey, CA 93943 USA.
[Zyngiridis, Ioannis] Command & Gen Staff Coll, Thessaloniki, Hellas, Greece.
RP Dell, RF (reprint author), USN, Postgrad Sch, Dept Operat Res, Monterey, CA 93943 USA.
EM dell@nps.edu; joroyset@nps.edu
NR 22
TC 7
Z9 7
U1 1
U2 4
PU AMER INST MATHEMATICAL SCIENCES
PI SPRINGFIELD
PA PO BOX 2604, SPRINGFIELD, MO 65801-2604 USA
SN 1547-5816
J9 J IND MANAG OPTIM
JI J. Ind. Manag. Optim.
PD MAY
PY 2009
VL 5
IS 2
BP 285
EP 302
DI 10.3934/jimo.2009.5.285
PG 18
WC Engineering, Multidisciplinary; Operations Research & Management
Science; Mathematics, Interdisciplinary Applications
SC Engineering; Operations Research & Management Science; Mathematics
GA 433FX
UT WOS:000265190800008
ER
PT J
AU Liu, DH
Wasson, R
Vincenzi, DA
AF Liu, Dahai
Wasson, Ryan
Vincenzi, Dennis A.
TI Effects of System Automation Management Strategies and Multi-mission
Operator-to-vehicle Ratio on Operator Performance in UAV Systems
SO JOURNAL OF INTELLIGENT & ROBOTIC SYSTEMS
LA English
DT Article
DE Unmanned aerial vehicle; Workload; Automation strategy; Operator
performance
AB It has been documented that the military intends to increase the number of Unmanned Aerial Vehicles (UAVs) in service while at the same time reducing the number of operators (Dixon et al. 2004). To meet this demand, many of the current UAV operator function will need to be automated. Levels of automation exist along a continuum from fully manual to fully automatic. Different automation strategies have been applied widely in UAV systems. Management by Consent (MBC), where the operator selects the task to be executed, and Management by Exception (MBE), where the computer selects the task to be executed are two proposed levels of automation for future UAV systems. Meanwhile, the optimum operator-to-vehicle ratio for future UAV systems is not yet known. It is expected that the optimum operator-to-vehicle ratio will vary with the level of automation applied to the system. Future UAV systems may require the use of adaptive automation to ensure maximum human-machine performance across varying operator-to-vehicle ratios. This study aims to help determine what levels of automation are most appropriate for different operator-to-vehicle ratios and how adaptive automation should be applied in future UAV systems. We investigated the effect of various operator-to-vehicle ratios and the two automation strategies on UAV mission tasks, results were analyzed using Analysis of Variance (ANOVA) and discussed in the last section of the paper.
C1 [Liu, Dahai; Wasson, Ryan] Embry Riddle Aeronaut Univ, Dept Human Factors & Syst, Daytona Beach, FL 32114 USA.
[Vincenzi, Dennis A.] USN, Air Warfare Ctr, Training Syst Div, Orlando, FL 32826 USA.
RP Liu, DH (reprint author), Embry Riddle Aeronaut Univ, Dept Human Factors & Syst, Daytona Beach, FL 32114 USA.
EM dahai.liu@erau.edu; dennis.vincenzi@navy.mil
NR 23
TC 8
Z9 8
U1 0
U2 2
PU SPRINGER
PI DORDRECHT
PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS
SN 0921-0296
J9 J INTELL ROBOT SYST
JI J. Intell. Robot. Syst.
PD MAY
PY 2009
VL 54
IS 5
BP 795
EP 810
DI 10.1007/s10846-008-9288-4
PG 16
WC Computer Science, Artificial Intelligence; Robotics
SC Computer Science; Robotics
GA 425GW
UT WOS:000264626000007
ER
PT J
AU Springborg, R
AF Springborg, Robert
TI Debating Arab Authoritarianism: Dynamics and Durability in Nondemocratic
Regimes
SO JOURNAL OF ISLAMIC STUDIES
LA English
DT Book Review
C1 [Springborg, Robert] Naval Postgrad Sch, Monterey, CA USA.
RP Springborg, R (reprint author), Naval Postgrad Sch, Monterey, CA USA.
EM rdspring@nps.edu
NR 1
TC 0
Z9 0
U1 2
U2 2
PU OXFORD UNIV PRESS
PI OXFORD
PA GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND
SN 0955-2340
J9 J ISLAM STUD
JI J. Islam. Stud.
PD MAY
PY 2009
VL 20
IS 2
BP 285
EP 288
DI 10.1093/jis/etp019
PG 4
WC Humanities, Multidisciplinary
SC Arts & Humanities - Other Topics
GA 473YK
UT WOS:000268248300016
ER
PT J
AU McKinney, JD
Colladay, K
Williams, KJ
AF McKinney, Jason D.
Colladay, Kristina
Williams, Keith J.
TI Linearization of Phase-Modulated Analog Optical Links Employing
Interferometric Demodulation
SO JOURNAL OF LIGHTWAVE TECHNOLOGY
LA English
DT Article
DE Analog photonic links; linearization; microwave photonics; phase
modulation
ID INTERMODULATION DISTORTION; ELECTROOPTIC MODULATOR; TRANSMISSION;
MICROWAVE; SYSTEM
AB We present a linearized phase-modulated analog photonic link that utilizes parallel interferometric demodulation to suppress the third-order intermodulation distortion present in the link. By utilizing two parallel interferometers with different differential delays, we are able to balance the third-order distortion in the output photocurrent and achieve a fifth-order limited link response. We demonstrate shot noise-limited spurious-free dynamic ranges of similar to 130 dB (1-Hz bandwidth) at GHz for a total DC photocurrent I-dc similar to 8 mA and similar to 131 dB (1-Hz bandwidth) at similar to 5 GHz for a total DC photocurrent I-dc similar to 7 mA. These results represent a nearly two order-of-magnitude improvement in dynamic range over conventional intensity-or phase-modulated analog photonic links for a fixed received photocurrent.
C1 [McKinney, Jason D.; Colladay, Kristina; Williams, Keith J.] USN, Res Lab, Washington, DC 20375 USA.
RP McKinney, JD (reprint author), USN, Res Lab, Code 5650, Washington, DC 20375 USA.
EM jason.mckinney@nrl.navy.mil; kristina.colladay@nrl.navy.mil;
keith.williams@nrl.navy.mil
NR 19
TC 26
Z9 27
U1 1
U2 10
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 0733-8724
EI 1558-2213
J9 J LIGHTWAVE TECHNOL
JI J. Lightwave Technol.
PD MAY 1
PY 2009
VL 27
IS 9
BP 1212
EP 1220
DI 10.1109/JLT.2008.929409
PG 9
WC Engineering, Electrical & Electronic; Optics; Telecommunications
SC Engineering; Optics; Telecommunications
GA 467BL
UT WOS:000267711100009
ER
PT J
AU Read, S
Dew, N
Sarasvathy, SD
Song, M
Wiltbank, R
AF Read, Stuart
Dew, Nicholas
Sarasvathy, Saras D.
Song, Michael
Wiltbank, Robert
TI Marketing Under Uncertainty: The Logic of an Effectual Approach
SO JOURNAL OF MARKETING
LA English
DT Review
DE effectuation; uncertainty; expertise; service-dominant logic; cocreation
ID DOMINANT LOGIC; EXPERTISE; STRATEGY; CREATION; MEMORY; TASK;
INTELLIGENCE; INFORMATION; PERFORMANCE; EVOLUTION
AB How do people approach marketing in the face of uncertainty, when the product, the market, and the traditional details involved in market research are unknowable ex ante? The authors use protocol analysis to evaluate how 27 expert entrepreneurs approach such a problem compared with 37 managers with little entrepreneurial expertise (all 64 participants, are asked to think aloud as they make marketing decisions in exactly the same unpredictable situation). The hypotheses are drawn from literature in cognitive science on (1) expertise in general and (2) entrepreneurial expertise in particular. The results show significant differences in heuristics used by the two groups. While those without entrepreneurial expertise rely primarily on predictive techniques, expert entrepreneurs tend to invert these. In particular, they use an effectual or nonpredictive logic to tackle uncertain market elements and to coconstruct novel markets with committed stakeholders.
C1 [Read, Stuart] IMD, Lausanne, Switzerland.
[Dew, Nicholas] Naval Postgrad Sch, Monterey, CA USA.
[Sarasvathy, Saras D.] Univ Virginia, Darden Grad Sch Business Adm, Charlottesville, VA 22903 USA.
[Song, Michael] Univ Missouri, Inst Entrepreneurship & Innovat, Kansas City, MO USA.
[Wiltbank, Robert] Willamette Univ, Atkinson Grad Sch Management, Salem, OR USA.
RP Read, S (reprint author), IMD, Lausanne, Switzerland.
EM Stuart.Read@imd.ch; NDew@nps.edu; SarasvathyS@darden.virginia.edu;
songmi@umkc.edu; Wiltbank@Willamette.edu
NR 106
TC 91
Z9 91
U1 7
U2 78
PU AMER MARKETING ASSOC
PI CHICAGO
PA 311S WACKER DR, STE 5800, CHICAGO, IL 60606-6629 USA
SN 0022-2429
EI 1547-7185
J9 J MARKETING
JI J. Mark.
PD MAY
PY 2009
VL 73
IS 3
BP 1
EP 18
PG 18
WC Business
SC Business & Economics
GA 434JN
UT WOS:000265271100001
ER
PT J
AU Prevosto, D
Capaccioli, S
Lucchesi, M
Rolla, PA
Ngai, KL
AF Prevosto, D.
Capaccioli, S.
Lucchesi, M.
Rolla, P. A.
Ngai, K. L.
TI Does the entropy and volume dependence of the structural
alpha-relaxation originate from the Johari-Goldstein beta-relaxation?
SO JOURNAL OF NON-CRYSTALLINE SOLIDS
LA English
DT Article; Proceedings Paper
CT 21st International Congress on Glass and Entropy
CY JUN 25-27, 2007
CL Trencin, SLOVAKIA
DE Glass transition; Pressure effects; Structural relaxation
ID ORGANIC GLASS FORMERS; SECONDARY RELAXATIONS; TEMPERATURE-DEPENDENCE;
SUPERCOOLED LIQUIDS; PRESSURE-DEPENDENCE; MOLECULAR-DYNAMICS; COUPLING
MODEL; TRANSITION; SPECTROSCOPY; DISPERSION
AB Conventional theories of glass transition are focussed oil reproducing the thermodynamic and dynamic properties of the structural alpha-process. However, in the last decade a class of secondary relaxations, called the Johari-Goldstein (JG) beta-relaxations. has attracted attention in view of the existence of various correlations and similarities of its properties with the structural alpha-process. These experimental evidences suggest that the secondary process may play a fundamental role in glass transition, and any theory of glass transition would be incomplete until the inter-relations between the JG beta-relaxation and the structural relaxation have been considered. In this paper, some significant experimental results showing several general and nontrivial connections between structural relaxation and JG beta-relaxation are reported. In particular, these connections indicate that, like the structural relaxation, the JG beta-relaxation is entropy and volume dependent. The experimental facts are consistent with the results of the coupling model. (C) 2009 Elsevier B.V. All rights reserved
C1 [Prevosto, D.; Capaccioli, S.; Lucchesi, M.; Rolla, P. A.] CNR Polylab, INFM, I-56127 Pisa, Italy.
[Capaccioli, S.; Lucchesi, M.; Rolla, P. A.] Univ Pisa, Dept Phys, I-56127 Pisa, Italy.
[Ngai, K. L.] USN, Res Lab, Washington, DC 20375 USA.
RP Prevosto, D (reprint author), CNR Polylab, INFM, Largo B Pontecorvo 3, I-56127 Pisa, Italy.
EM prevosto@df.unipi.it; capacci@df.unipi.it; lucches@df.unipi.it;
rolla@df.unipi.it; ngai@estd.nrl.navy.mil
RI Prevosto, Daniele/N-7245-2013; Capaccioli, Simone/A-8503-2012
OI Prevosto, Daniele/0000-0003-1029-0972; Capaccioli,
Simone/0000-0003-4866-8918
NR 71
TC 19
Z9 19
U1 0
U2 7
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0022-3093
EI 1873-4812
J9 J NON-CRYST SOLIDS
JI J. Non-Cryst. Solids
PD MAY 1
PY 2009
VL 355
IS 10-12
BP 705
EP 711
DI 10.1016/j.jnoncrysol.2008.09.043
PG 7
WC Materials Science, Ceramics; Materials Science, Multidisciplinary
SC Materials Science
GA 453NJ
UT WOS:000266617100019
ER
PT J
AU Tomita, S
Thompson, K
Carver, T
Vazquez, WD
AF Tomita, Sandra
Thompson, Keith
Carver, Thomas
Vazquez, W. David
TI Nodular fasciitis: a sarcomatous impersonator
SO JOURNAL OF PEDIATRIC SURGERY
LA English
DT Article
DE Nodular fascitiis; Pseudosarcomatous fasciitis
ID CHILDREN; LESION; NECK; HEAD
AB Reports of nodular fasciitis among adults arc common however, this condition is relatively, rare in the pediatric population. Its clinical and histologic characteristics are similar to malignancies such as sarcoma: thus. it is prudent for the clinician caring for children and adolescents to be aware of the possibility of its occurrence. Nodular fasciitis is a benign mesenchymal tumor. Often preserving as a rapidly enlarging soft tissue Mass, clinically, it call easily be mistaken as a sarcoma or other malignancy during clinical evaluation, In addition, the pathologist may recognize its high cellularity, high mitotic index, and infiltrative borders, which, as a result, may lead to erroneous diagnosis as a malignancy. Although more frequently seen in adults, it does occur in the pediatric population and should be considered during evaluation and treatment of soft tissue masses in children and adolescents. Published by Elsevier Inc.
C1 [Tomita, Sandra; Carver, Thomas; Vazquez, W. David] USN, San Diego Med Ctr, Div Pediat Surg, Dept Gen Surg, San Diego, CA 92134 USA.
[Thompson, Keith] USN, San Diego Med Ctr, Dept Pathol, San Diego, CA 92134 USA.
RP Tomita, S (reprint author), USN, San Diego Med Ctr, Clin Investigat Dept KCA, San Diego, CA 92134 USA.
EM sandra.tomita@med.navy.mil
OI , Sandra/0000-0002-5472-9361
NR 8
TC 11
Z9 12
U1 0
U2 0
PU W B SAUNDERS CO-ELSEVIER INC
PI PHILADELPHIA
PA 1600 JOHN F KENNEDY BOULEVARD, STE 1800, PHILADELPHIA, PA 19103-2899 USA
SN 0022-3468
J9 J PEDIATR SURG
JI J. Pediatr. Surg.
PD MAY
PY 2009
VL 44
IS 5
BP E17
EP E19
DI 10.1016/j.jpedsurg.2009.01.047
PG 3
WC Pediatrics; Surgery
SC Pediatrics; Surgery
GA 454GH
UT WOS:000266669900043
PM 19433154
ER
PT J
AU Hartman, AL
Lunney, KM
Serena, JE
AF Hartman, Adam L.
Lunney, Kevin M.
Serena, Jacqueline E.
TI Pediatric Stroke: Do Clinical Factors Predict Delays in Presentation?
SO JOURNAL OF PEDIATRICS
LA English
DT Article
ID ISCHEMIC-STROKE; CEREBROVASCULAR-DISEASE; CHILDHOOD STROKE; HOSPITAL
ARRIVAL; CHILDREN; TIME; ONSET; DIAGNOSIS; INFANTS
AB Objective To explore associations between age, clinical presentation, or predisposing conditions and delayed diagnosis of arterial ischemic stroke.
Study design This was a retrospective chart review of children admitted to tertiary care medical centers in San Diego County between 1995 and 2000. Inpatient charts were screened by ICD-9 codes for stroke, cerebrovascular anomalies, hemiplegia, laid migraine.
Results Time of presentation for medical evaluation did not differ by age group, clinical presentation, or risk factors. There was no relationship between dine of presentation and Glasgow Outcome Score. Only 24% (9/37) of the patients with ischemic stroke presented for clinical evaluation within 6 hours after onset of symptoms, laid in additional 41% (13/37) presented within the first 24 hours. Children who initially presented with altered mental status were more likely to die than those with other initial presentations (odds ratio = 9.94; 95% confidence interval = 2.05 to 47.9), but none of the 1.6 children who presented with hemiparesis died (P = .01).
Conclusion Time of presentation was not related to the clinical factors studied. Early recognition of stroke in children is an important goal for families and health care providers. (J Peditar 2009;154:727-32)
C1 [Hartman, Adam L.] Johns Hopkins Med Inst, Dept Neurol, Baltimore, MD 21205 USA.
[Lunney, Kevin M.] Univ Maryland, Sch Med, Dept Epidemiol & Prevent Med, Baltimore, MD 21201 USA.
[Serena, Jacqueline E.] USN, San Diego Med Ctr, Dept Pediat, San Diego, CA 92152 USA.
RP Hartman, AL (reprint author), Johns Hopkins Univ Hosp, Dept Neurol, 600 N Wolfe St,Meyer 2-147, Baltimore, MD 21287 USA.
EM ahartma2@jhmi.edu
FU Neurological Sciences Academic Development Award [KI2NS001696]
FX Supported by Neurological Sciences Academic Development Award
KI2NS001696 (to AH.). The opinions or assertions contained herein are
those of the authors and are not to be construed as official or
reflecting the views of the Department of the Navy, Department of
Defense, or the United States Government. The authors declare no
conflicts of interest.
NR 26
TC 8
Z9 9
U1 0
U2 0
PU MOSBY-ELSEVIER
PI NEW YORK
PA 360 PARK AVENUE SOUTH, NEW YORK, NY 10010-1710 USA
SN 0022-3476
EI 1097-6833
J9 J PEDIATR-US
JI J. Pediatr.
PD MAY
PY 2009
VL 154
IS 5
BP 727
EP 732
DI 10.1016/j.jpeds.2008.11.011
PG 6
WC Pediatrics
SC Pediatrics
GA 437QE
UT WOS:000265501200021
PM 19111319
ER
PT J
AU Kentosh, J
Yablonsky, M
AF Kentosh, Joshua
Yablonsky, Michael
TI New Papular Eruption in a Patient with Chronic Atopic Dermatitis
SO JOURNAL OF PEDIATRICS
LA English
DT Editorial Material
ID BENIGN CEPHALIC HISTIOCYTOSIS
C1 [Kentosh, Joshua; Yablonsky, Michael] USN, Med Ctr, Portsmouth, VA USA.
RP Kentosh, J (reprint author), USN, Med Ctr, Portsmouth, VA USA.
NR 4
TC 0
Z9 0
U1 0
U2 0
PU MOSBY-ELSEVIER
PI NEW YORK
PA 360 PARK AVENUE SOUTH, NEW YORK, NY 10010-1710 USA
SN 0022-3476
EI 1097-6833
J9 J PEDIATR-US
JI J. Pediatr.
PD MAY
PY 2009
VL 154
IS 5
BP 772
EP 772
DI 10.1016/j.jpeds.2008.12.005
PG 1
WC Pediatrics
SC Pediatrics
GA 437QE
UT WOS:000265501200031
PM 19364564
ER
PT J
AU Clarke, MG
Dewing, CB
Schroder, DT
Solomon, DJ
Provencher, MT
AF Clarke, Michael G.
Dewing, Christopher B.
Schroder, David T.
Solomon, Daniel J.
Provencher, Matthew T.
TI Normal shoulder outcome score values in the young, active adult
SO JOURNAL OF SHOULDER AND ELBOW SURGERY
LA English
DT Article
DE Shoulder outcome scores; ASES Score; Western Ontario Shoulder
Instability Index; Simple Shoulder Test; DASH score
ID QUALITY-OF-LIFE; HEALTH-STATUS; QUESTIONNAIRES; INSTRUMENTS; SYSTEMS;
DISEASE
AB Background: Our objective was to determine baseline, normative values for multiple shoulder outcome scores in a young, active population without shoulder symptoms.
Methods: One hundred ninety-two volunteers completed the Single Assessment Numeric Evaluation, modified American Shoulder and Elbow Surgeons score, Western Ontario Shoulder Instability index, Simple Shoulder Test, and Disabilities of the Ann, Shoulder and Hand score. Their mean age was 28.8 years (range, 17-50 years).
Results: Of the participants, 59 (31%) scored no deficiencies on any of the outcome instruments, whereas 133 (69%) demonstrated some abnormal shoulder score. The mean scores were as follows: Single Assessment Numeric Evaluation, 97.7 (SD 5.2); modified American Shoulder and Elbow Surgeons score, 98.9 (SD, 3.3); Western Ontario Shoulder Instability index, 82.7 of 2100 (SD, 153.5) Simple Shoulder Test, 11.79 (SD, 0.60); and Disabilities of the Arm, Shoulder and Hand score, 1.85 (SD, 5.99).
Conclusion: Our results show that the best possible shoulder score in an asymptomatic population may not be equivalent to a perfect score on the outcome scale. (C) 2009 Journal of Shoulder and Elbow Surgery Board of Trustees.
C1 [Clarke, Michael G.; Dewing, Christopher B.; Solomon, Daniel J.; Provencher, Matthew T.] USN, San Diego Med Ctr, Dept Orthopaed Surg, San Diego, CA 92134 USA.
[Schroder, David T.] USN Hosp, Dept Orthopaed Surg, Yokosuka, Kanagawa, Japan.
RP Solomon, DJ (reprint author), USN, San Diego Med Ctr, Dept Orthopaed Surg, 34800 Bob Wilson Dr,Suite 112, San Diego, CA 92134 USA.
EM Daniel.Solomon@med.navy.mil
NR 18
TC 17
Z9 17
U1 0
U2 4
PU MOSBY-ELSEVIER
PI NEW YORK
PA 360 PARK AVENUE SOUTH, NEW YORK, NY 10010-1710 USA
SN 1058-2746
J9 J SHOULDER ELB SURG
JI J. Shoulder Elbow Surg.
PD MAY-JUN
PY 2009
VL 18
IS 3
BP 424
EP 428
DI 10.1016/j.jse.2008.10.009
PG 5
WC Orthopedics; Sport Sciences; Surgery
SC Orthopedics; Sport Sciences; Surgery
GA 441HN
UT WOS:000265760000015
PM 19157910
ER
PT J
AU Fang, J
Zhou, JC
Lan, EH
Dunn, B
Zink, JI
AF Fang, Jonathan
Zhou, Jing C.
Lan, Esther H.
Dunn, Bruce
Zink, Jeffrey I.
TI Bio-hybrid materials for immunoassay-based sensing of cortisol
SO JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
LA English
DT Article
DE Sol-gel; Biosensing; Immunoassay; Cortisol; Standard additions
ID SOL-GEL MATERIALS; STANDARD ADDITION APPROACH; GRAN PLOT TECHNIQUE;
ENZYMATIC-ACTIVITY; SERUM CORTISOL; PROTEINS; RADIOIMMUNOASSAY;
ENCAPSULATION; MATRICES; ANTIBODY
AB Sol-gel encapsulation has been used as the basis for detecting cortisol by an immunoassay approach. Previous research showed that antibodies immobilized in the pores of a sol-gel derived silica were able to bind cortisol and be used as an immunosensor. However, this approach was not effective when measuring cortisol levels in human serum because of interference from other fluorescence sources. The present paper describes a protocol which overcomes these limitations and enables sol-gel immunoassays to effectively measure cortisol in human serum over the physiological range of cortisol blood concentrations in an adult (2-28 mu g/dL). The method involves a standard additions approach in which various amounts of cortisol are added to the serum. The cortisol concentration values obtained with our sol-gel immunoassay were typically within 10% of the values obtained by traditional analytical methods. The protocol presented here represents a significant contribution to sol-gel sensing and immunoassays in particular, because of the ability to detect an analyte in human serum. In addition, this work reports the first comparison between results from a sol-gel immunosensor and an alternative immuno-binding method for analyte detection.
C1 [Lan, Esther H.; Dunn, Bruce] Univ Calif Los Angeles, Dept Mat Sci & Engn, Los Angeles, CA 90095 USA.
[Fang, Jonathan] Univ Calif Los Angeles, Interdept Program Biomed Engn, Los Angeles, CA 90095 USA.
[Zhou, Jing C.] USN, Res Lab, Washington, DC 20375 USA.
[Dunn, Bruce; Zink, Jeffrey I.] Univ Calif Los Angeles, Calif NanoSyst Inst, Los Angeles, CA 90095 USA.
[Zink, Jeffrey I.] Univ Calif Los Angeles, Dept Chem & Biochem, Los Angeles, CA 90095 USA.
RP Dunn, B (reprint author), Univ Calif Los Angeles, Dept Mat Sci & Engn, Los Angeles, CA 90095 USA.
EM bdunn@ucla.edu
FU NASA [NAG9-1252]; Institute for Cell Mimetic Space Exploration (CMISE);
NASA University Research, Engineering and Technology Institute (URETI)
[NCC2-1364]; National Science Foundation; UCLA Materials Creation
Training Program
FX The authors greatly appreciate support for this research by NASA under
grant no. NAG9-1252. This work was also partially supported by the
Institute for Cell Mimetic Space Exploration (CMISE), a NASA University
Research, Engineering and Technology Institute (URETI) under award
number NCC2-1364 and by the National Science Foundation. We would like
to thank Patricia L. Gillman and Scott M. Smith from the National
Aeronautics and Space Administration Johnson Space Center (NASA-JSC) in
Houston, Texas for providing us with the human serum samples. Jonathan
would like to thank the UCLA Materials Creation Training Program for
fellowship support.
NR 48
TC 3
Z9 3
U1 1
U2 9
PU SPRINGER
PI DORDRECHT
PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS
SN 0928-0707
J9 J SOL-GEL SCI TECHN
JI J. Sol-Gel Sci. Technol.
PD MAY
PY 2009
VL 50
IS 2
BP 176
EP 183
DI 10.1007/s10971-008-1889-7
PG 8
WC Materials Science, Ceramics
SC Materials Science
GA 436AF
UT WOS:000265384300008
ER
PT J
AU Magill, JC
Cataldi, P
Morency, JR
Hammer, DX
Burgess, R
Jeter, E
AF Magill, John C.
Cataldi, Paolo
Morency, Joseph R.
Hammer, Daniel X.
Burgess, Riley
Jeter, Edward
TI Demonstration of a Wire Suspension for Wind-Tunnel Virtual Flight
Testing
SO JOURNAL OF SPACECRAFT AND ROCKETS
LA English
DT Article
AB This paper describes the development of a wire suspension system for dynamic testing of missiles in a wind tunnel. The system restrains the missile, permits motion in 3 rotational degrees of freedom, and measures forces on the model. The apparatus allows testing of missile control systems in the wind tunnel, reducing the cost and risk of a flight-test program. Hydraulic actuators control cable tension and model position. Bearings provide free roll and pitch, whereas yaw motion is created by the cable actuation system and a repetitive-learning controller. The paper describes the cable arrangement, force balance, bearings, closed-loop hydraulic control, and the repetitive-learning controller. Two sets of tests were conducted with the broad ocean area missile (a sidewinder variant) in the High-Velocity Air Stream facility at the China Lake Naval Weapons Center. The tests, conducted at M = 0.4-0.6, demonstrate functionality of the system in a series of missile pitch and yaw maneuvers. The learning controller is shown to learn an s maneuver in the yaw plane.
C1 [Magill, John C.; Hammer, Daniel X.] Phys Sci Inc, Biomed Imaging, Andover, MA 01810 USA.
[Burgess, Riley; Jeter, Edward] USN, Air Warfare Ctr, Weap Div, China Lake, CA 93555 USA.
RP Magill, JC (reprint author), Phys Sci Inc, Biomed Imaging, 20 New England Business Ctr, Andover, MA 01810 USA.
FU U.S. Air Force Arnold Engineering Development Center (AEDC)
[F40600-01-C-0015]
FX This material is based on work supported by the U.S. Air Force Arnold
Engineering Development Center (AEDC) under contract no.
F40600-01-C-0015. The contract monitor is Ronald Bishel. The authors
thank Frank Steinle, Clark Lawrence, and Ben Mills of Sverdrup
Technology, Inc./AEDC lor their helpful input. Any opinions, findings,
and conclusions or recorn mend atio n s expressed in this material are
those of the authors and do not necessarily reflect the views of the
U.S. Air Force Arnold Engineering Development Center.
NR 9
TC 1
Z9 5
U1 0
U2 4
PU AMER INST AERONAUT ASTRONAUT
PI RESTON
PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091-4344 USA
SN 0022-4650
J9 J SPACECRAFT ROCKETS
JI J. Spacecr. Rockets
PD MAY-JUN
PY 2009
VL 46
IS 3
BP 624
EP 633
DI 10.2514/1.39188
PG 10
WC Engineering, Aerospace
SC Engineering
GA 456ZX
UT WOS:000266895100014
ER
PT J
AU Zhu, XK
Joyce, JA
AF Zhu, Xian-Kui
Joyce, James A.
TI Revised Incremental J-Integral Equations for ASTM E1820 Using the Crack
Mouth Opening Displacement
SO JOURNAL OF TESTING AND EVALUATION
LA English
DT Article
DE fracture testing; fracture toughness; J-R curve; J-integral equation;
CMOD; SE(B) specimen
ID SE(B) SPECIMENS; SHALLOW CRACKS; BEND
AB The incremental J-integral equations used in ASTM E1820 were developed utilizing the work input to the test specimen, and utilize the load versus load-point/line displacement (LLD) data obtained from the fracture test. The analysis of Ernst et al. [Fracture Machanics. Thirteenth Conference, ASTM STP 743] was then used to obtain crack growth corrected estimates of the J-integral as needed for an accurate J-R curve evaluation. For the compact type specimens, the crack mouth opening displacement (CMOD) gage was moved to the load line so that an adequate estimate of LLD could be obtained from the clip gage and utilized for compliance-based crack extension and incremental J-integral estimates. For the single edge-notched bend [SE(B)] specimens, however, it has been necessary to measure both CMOD for compliance-based crack length estimates and LLD for the crack growth corrected J-integral calculations. Additional experimental complexity and expense are thus added. ASTM E1820 includes a "basic" procedure which allows evaluating the J-integral using CMOD without crack growth corrections if the result is used only for evaluation of initiation toughness. Recently, Annex A16 based on work of Wallin and Laukkanen [Engineering Fracture Mechanics. Vol. 71,2004, pp. 1601 1614] has been added to ASTM E1820 that presents a multiple-step procedure to obtain a crack growth corrected J-R curve from the basic method data. A more direct approach was proposed recently by Zhu et al. [Journal of ASTM International. Vol. 5, No. 5, 2008, paper ID: JAI 101532] using an incremental procedure to obtain the desired, crack growth corrected J-R curve from the CMOD data of SE(B) specimens with two geometry factors eta(CMOD) and gamma(CMOD) similar to the parameters presently used in the existing LLD-based J-integral analysis. Using fracture toughness test data for SE(B) specimens, detailed comparisons and discussions are made between the proposed method and the ASTM E1820 CMOD methods in determination of J-R curves for HY80 steels. As the basis of comparison, the "accurate" solutions obtained from the standard LLD-based incremental J-integral method are provided for all specimens considered. The difference between the CMOD and LLD methods are than quantified. The results show that the proposed CMOD incremental J-integral equations are simple and effective, and thus are recommended here for use in ASTM E1820 for testing J-R curves and for reducing test costs and complexity.
C1 [Zhu, Xian-Kui] Battelle Mem Inst, Columbus, OH 43201 USA.
[Joyce, James A.] USN Acad, Dept Mech Engn, Annapolis, MD 21402 USA.
RP Zhu, XK (reprint author), Battelle Mem Inst, 505 King Ave, Columbus, OH 43201 USA.
EM zhux@battelle.org; jaj@usna.edu
NR 14
TC 7
Z9 7
U1 0
U2 1
PU AMER SOC TESTING MATERIALS
PI W CONSHOHOCKEN
PA 100 BARR HARBOR DR, W CONSHOHOCKEN, PA 19428-2959 USA
SN 0090-3973
J9 J TEST EVAL
JI J. Test. Eval.
PD MAY
PY 2009
VL 37
IS 3
BP 205
EP 214
PG 10
WC Materials Science, Characterization & Testing
SC Materials Science
GA 443HM
UT WOS:000265900800002
ER
PT J
AU Satter, EK
Gendernalik, SB
Galeckas, KJ
AF Satter, Elizabeth K.
Gendernalik, Sarah B.
Galeckas, Kenneth J.
TI Diffuse xanthogranulomatous dermatitis and systemic Langerhans cell
histiocytosis: A novel case that demonstrates bridging between
non-Langerhans cell histiocytosis and Langerhans cell histiocytosis
SO JOURNAL OF THE AMERICAN ACADEMY OF DERMATOLOGY
LA English
DT Article
ID BENIGN CEPHALIC HISTIOCYTOSIS; GENERALIZED ERUPTIVE HISTIOCYTOMA;
JUVENILE XANTHOGRANULOMA; DISORDERS; SPECTRUM; CHILDREN; DISEASE
AB The advent of electron microscopy and immunohistochemical stains allowed for reclassification of the histiocytoses based on the predominant cell in the infiltrate. Although the Current schema simplicity provides a good foundation, some patients display overlapping clinical and immunohistochemical features that defy classification. The patient herein illustrates bridging between histiocytic disorders. Through this case we review the various conditions classified Under the non-Langerhans cell histiocytosis and Langerhans cell histiocytosis rubric. (J Am Acad Dermatol 2009;60:841-8.)
C1 [Satter, Elizabeth K.; Galeckas, Kenneth J.] USN, San Diego Med Ctr, Dept Dermatol, San Diego, CA 92134 USA.
[Satter, Elizabeth K.] USN, San Diego Med Ctr, Dept Pathol, San Diego, CA 92134 USA.
[Gendernalik, Sarah B.] USN, San Diego Med Ctr, Dept Med, San Diego, CA 92134 USA.
RP Satter, EK (reprint author), USN, San Diego Med Ctr, Dept Dermatol, 34520 Bob Wilson Dr,Suite 300, San Diego, CA 92134 USA.
EM elizabeth.satter@med.navy.mil
NR 28
TC 1
Z9 1
U1 1
U2 2
PU MOSBY-ELSEVIER
PI NEW YORK
PA 360 PARK AVENUE SOUTH, NEW YORK, NY 10010-1710 USA
SN 0190-9622
J9 J AM ACAD DERMATOL
JI J. Am. Acad. Dermatol.
PD MAY
PY 2009
VL 60
IS 5
BP 841
EP 848
DI 10.1016/j.jaad.2008.10.001
PG 8
WC Dermatology
SC Dermatology
GA 438AW
UT WOS:000265529300016
PM 19022530
ER
PT J
AU Parthasarathy, TA
Rapp, RA
Opeka, M
Kerans, RJ
AF Parthasarathy, Triplicane A.
Rapp, Robert A.
Opeka, Mark
Kerans, Ronald J.
TI Effects of Phase Change and Oxygen Permeability in Oxide Scales on
Oxidation Kinetics of ZrB2 and HfB2
SO JOURNAL OF THE AMERICAN CERAMIC SOCIETY
LA English
DT Article
ID ZIRCONIA-HAFNIA; TEMPERATURE; DIFFUSION; COMPOSITES; VISCOSITY;
TRANSPORT; CERAMICS; DIBORIDE; MODEL
AB A wide range of experimental data on the oxidation of ZrB2 and HfB2 as a function of temperature (800 degrees-2500 degrees C) is interpreted using a mechanistic model that relaxes two significant assumptions made in prior work. First, inclusion of the effect of volume change associated with monoclinic to tetragonal phase change of the MeO2 phases is found to rationalize the observations by several investigators of abrupt changes in weight gain, recession, and oxygen consumed, as the temperature is raised through the transformation temperatures for ZrO2 and HfO2. Second, the inclusion of oxygen permeability in ZrO2 is found to rationalize the enhancement in oxidation behavior at very high temperatures (>1800 degrees C) of ZrB2, while the effect of oxygen permeability in HfO2 is negligible. Based on these considerations, the significant advantage of HfB2 over ZrB2 is credited to the higher transformation temperature and lower oxygen permeability of HfO2 compared with ZrO2.
C1 [Parthasarathy, Triplicane A.] Universal Energy Syst Inc, Dayton, OH 45432 USA.
[Rapp, Robert A.] Ohio State Univ, Columbus, OH 43235 USA.
[Opeka, Mark] Naval Surface Warfare Ctr, Carderock, MD 20817 USA.
[Kerans, Ronald J.] USAF, Res Lab, Mat & Mfg Directorate, AFRL MLLN, Wright Patterson AFB, OH 45433 USA.
RP Parthasarathy, TA (reprint author), Universal Energy Syst Inc, Dayton, OH 45432 USA.
EM triplicane.parthasarathy@wpafb.af.mil
RI Parthasarathy, Triplicane/B-7146-2011
OI Parthasarathy, Triplicane/0000-0002-5449-9754
FU USAF [FA8650-04-D-5233]
FX This work was supported in part by USAF Contract # FA8650-04-D-5233.
NR 30
TC 18
Z9 18
U1 2
U2 18
PU WILEY-BLACKWELL
PI MALDEN
PA COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA
SN 0002-7820
J9 J AM CERAM SOC
JI J. Am. Ceram. Soc.
PD MAY
PY 2009
VL 92
IS 5
BP 1079
EP 1086
DI 10.1111/j.1551-2916.2009.03031.x
PG 8
WC Materials Science, Ceramics
SC Materials Science
GA 444WT
UT WOS:000266012300019
ER
PT J
AU Morley, JE
Steinberg, KE
AF Morley, John E.
Steinberg, Karl E.
TI Diarrhea in Long-Term Care: A Messy Problem
SO JOURNAL OF THE AMERICAN MEDICAL DIRECTORS ASSOCIATION
LA English
DT Editorial Material
ID ESCHERICHIA-COLI O157-H7; RESISTANT STAPHYLOCOCCUS-AUREUS;
ANTIBIOTIC-ASSOCIATED DIARRHEA; CLOSTRIDIUM-DIFFICILE DISEASE;
HEMOLYTIC-UREMIC SYNDROME; NURSING-HOME RESIDENTS; WEIGHT-LOSS; OLDER
PERSONS; ELDERLY-PATIENTS; UNITED-STATES
C1 [Morley, John E.] St Louis Univ, Sch Med, Div Geriatr Med, St Louis, MO 63104 USA.
[Morley, John E.] VA Med Ctr, GRECC, St Louis, MO USA.
[Steinberg, Karl E.] Scripps Coastal Med Ctr, Oceanside, CA USA.
[Steinberg, Karl E.] UCSD, Div Community & Family Med, San Diego, CA USA.
[Steinberg, Karl E.] USN, Hosp Camp Pendleton, Oceanside, CA USA.
RP Morley, JE (reprint author), St Louis Univ, Sch Med, Div Geriatr Med, 1402 S Grand Blvd,M238, St Louis, MO 63104 USA.
EM morley@slu.edu
RI morley, john/F-9177-2011
OI morley, john/0000-0001-6444-2965
NR 82
TC 4
Z9 4
U1 2
U2 5
PU ELSEVIER SCIENCE INC
PI NEW YORK
PA 360 PARK AVE SOUTH, NEW YORK, NY 10010-1710 USA
SN 1525-8610
J9 J AM MED DIR ASSOC
JI J. Am. Med. Dir. Assoc.
PD MAY
PY 2009
VL 10
IS 4
BP 213
EP 217
DI 10.1016/j.jamda.2009.01.007
PG 5
WC Geriatrics & Gerontology
SC Geriatrics & Gerontology
GA 453XJ
UT WOS:000266645900001
PM 19426933
ER
PT J
AU Doyle, JD
Grubisic, V
Brown, WOJ
De Wekker, SFJ
Dornbrack, A
Jiang, QF
Mayor, SD
Weissmann, M
AF Doyle, James D.
Grubisic, Vanda
Brown, William O. J.
De Wekker, Stephan F. J.
Doernbrack, Andreas
Jiang, Qingfang
Mayor, Shane D.
Weissmann, Martin
TI Observations and Numerical Simulations of Subrotor Vortices during T-REX
SO JOURNAL OF THE ATMOSPHERIC SCIENCES
LA English
DT Article
ID KELVIN-HELMHOLTZ BILLOWS; UPPER BOUNDARY-CONDITION; MOUNTAIN LEE WAVES;
ROTOR EXPERIMENT; DOWNSLOPE WINDS; EVOLUTION; DYNAMICS; MODELS;
AIRCRAFT; TERRAIN
AB High-resolution observations from scanning Doppler and aerosol lidars, wind profiler radars, as well as surface and aircraft measurements during the Terrain-induced Rotor Experiment (T-REX) provide the first comprehensive documentation of small-scale intense vortices associated with atmospheric rotors that form in the lee of mountainous terrain. Although rotors are already recognized as potential hazards for aircraft, it is proposed that these small-scale vortices, or subrotors, are the most dangerous features because of strong wind shear and the transient nature of the vortices. A life cycle of a subrotor event is captured by scanning Doppler and aerosol lidars over a 5-min period. The lidars depict an amplifying vortex, with a characteristic length scale of similar to 500-1000 m, that overturns and intensifies to a maximum spanwise vorticity greater than 0.2 s(-1). Radar wind profiler observations document a series of vortices, characterized by updraft/downdraft couplets and regions of enhanced reversed flow, that are generated in a layer of strong vertical wind shear and subcritical Richardson number. The observations and numerical simulations reveal that turbulent subrotors occur most frequently along the leading edge of an elevated sheet of horizontal vorticity that is a manifestation of boundary layer shear and separation along the lee slopes. As the subrotors break from the vortex sheet, intensification occurs through vortex stretching and in some cases tilting processes related to three-dimensional turbulent mixing. The subrotors and ambient vortex sheet are shown to intensify through a modest increase in the upstream inversion strength, which illustrates the predictability challenges for the turbulent characterization of rotors.
C1 [Doyle, James D.] USN, Res Lab, Marine Meteorol Div, Monterey, CA 93943 USA.
[Grubisic, Vanda] Univ Nevada, Desert Res Inst, Reno, NV 89506 USA.
[Brown, William O. J.] NCAR, Boulder, CO USA.
[De Wekker, Stephan F. J.] Univ Virginia, Charlottesville, VA USA.
[Doernbrack, Andreas; Weissmann, Martin] Inst Phys Atmosphare, Deutsch Zentrum Luft & Raumfahrt, Oberpfaffenhofen, Germany.
[Jiang, Qingfang] UCAR, Monterey, CA USA.
[Mayor, Shane D.] Calif State Univ Chico, Chico, CA 95929 USA.
RP Doyle, JD (reprint author), USN, Res Lab, Marine Meteorol Div, 7 Grace Hopper Ave, Monterey, CA 93943 USA.
EM james.doyle@nrlmry.navy.mil
RI Weissmann, Martin/C-9084-2013;
OI De Wekker, Stephan/0000-0002-6343-854X
FU U. S. National Science Foundation (NSF); UK Natural Environmental
Research Council (NERC); Met Office UK; U. S. Naval Research Laboratory
(NRL); National Oceanic and Atmospheric Administration (NOAA); Deutsches
Zentrum fur Luft- und Raumfahrt (DLR); Swiss National Science Foundation
(SNSF); Austrian Science Foundation (FWF); ONR PE [0601153N]; NSF
[ATM-0524891]
FX Dale Durran and Joachim Kuettner are gratefully acknowledged for helpful
discussions. The efforts of the National Center for Atmospheric Research
(NCAR) Field Project Support (FPS) and the T-REX staff are greatly
appreciated. The primary sponsor of T-REX is the U. S. National Science
Foundation (NSF). We acknowledge also other funding agencies and
organizations that have provided funding and in-kind support for various
T-REX components including the UK Natural Environmental Research Council
(NERC), Met Office UK, U. S. Naval Research Laboratory (NRL), National
Oceanic and Atmospheric Administration (NOAA), Deutsches Zentrum fur
Luft- und Raumfahrt (DLR), Swiss National Science Foundation (SNSF), and
the Austrian Science Foundation (FWF). The first and second author,
respectively, acknowledge support through ONR PE 0601153N and NSF
ATM-0524891. COAMPS is a registered trademark of NRL. The support of
Andreas Wieser for DLR lidar observations and lidar analysis software
from Ron Calhoun and Christian Kuhnlein is acknowledged. The Doppler
lidar operated by DLR was leased from Lockheed Martin Coherent
Technologies and their technical support is acknowledged. We thank Sasa
Gabersek for helpful discussions and graphical contributions.
NR 43
TC 26
Z9 26
U1 2
U2 7
PU AMER METEOROLOGICAL SOC
PI BOSTON
PA 45 BEACON ST, BOSTON, MA 02108-3693 USA
SN 0022-4928
J9 J ATMOS SCI
JI J. Atmos. Sci.
PD MAY
PY 2009
VL 66
IS 5
BP 1229
EP 1249
DI 10.1175/2008JAS2933.1
PG 21
WC Meteorology & Atmospheric Sciences
SC Meteorology & Atmospheric Sciences
GA 452KI
UT WOS:000266538500008
ER
PT J
AU Barton, O
AF Barton, Oscar, Jr.
TI Approximate Method for Buckling of Symmetric Composite Laminates under
Thermal Loading
SO JOURNAL OF THERMOPLASTIC COMPOSITE MATERIALS
LA English
DT Article
DE buckling analysis; stability analysis; thermal buckling analysis;
eigenderivatives
ID RECTANGULAR-PLATES; EIGENVALUES
AB In this paper, an approximate closed-form solution is presented to compute the thermal buckling response of a symmetric angle-ply laminates that are clamped in one edge and free along the other edge. For this boundary condition, no exact solution is available and, in order to compute the critical buckling temperatures, numerical methods such as the Rayleigh-Ritz or finite element method must be used. Approximate closed-form solutions bridge the void between exact and approximate numerical solutions and can readily be employed in design optimization. The environment corresponds to a steady state condition providing a uniform temperature distribution for the laminate. The laminate consists of four layers [theta/-theta] s constructed of low, moderate, and high stiffness ratio materials. Comparative results using the Rayleigh-Ritz method provides a means of assessing the accuracy of the expression. For certain laminate architectures, several modes must be computed using the approximate quadratic expression to ascertain the lowest buckling mode, and once identified, provides an excellent approximation for the mode computed using the Rayleigh-Ritz method.
C1 USN Acad, Dept Mech Engn, Annapolis, MD 21402 USA.
RP Barton, O (reprint author), USN Acad, Dept Mech Engn, Annapolis, MD 21402 USA.
EM obarton@usna.edu
NR 9
TC 1
Z9 1
U1 2
U2 4
PU SAGE PUBLICATIONS LTD
PI LONDON
PA 1 OLIVERS YARD, 55 CITY ROAD, LONDON EC1Y 1SP, ENGLAND
SN 0892-7057
J9 J THERMOPLAST COMPOS
JI J. Thermoplast. Compos. Mater.
PD MAY
PY 2009
VL 22
IS 3
BP 305
EP 320
DI 10.1177/0892705708095997
PG 16
WC Materials Science, Composites
SC Materials Science
GA 433NS
UT WOS:000265211400005
ER
PT J
AU Johnston, SL
Dipp, RD
AF Johnston, Scott L.
Dipp, Randolf D.
TI Support of Marines and Sailors Returning From Combat: A Comparison of
Two Different Mental Health Models
SO MILITARY MEDICINE
LA English
DT Article
ID IRAQ
AB As Navy medicine continues to support the Global War on Terrorism, various approaches are used to attenuate combat stress casualties. This article examines two different mental health models, one employed at sea and one in the combat zone, used for active duty forces immediately after cessation of combat operations. Both models focus on screening, early prevention, and treatment implemented during the transition from the combat theater to garrison. Returning by sea provided the opportunity for greater education and decompression of combat stress as the service members transitioned back to garrison when compared to those who returned by air. It was also found that the Post Deployment Health Assessment (PDHA) did not capture as many individuals with mental health issues leaving combat theater, which identified 6% on both missions, compared to the capture rate with the Post Deployment Psychological Screener (PDPS), which identified 16-20%. Limitations, opportunities, and recommendations for future interventions are discussed.
C1 [Johnston, Scott L.] USN, Dept Mental Hlth, Hlth Clin Hawaii, Honolulu, HI 96860 USA.
[Dipp, Randolf D.] Third Marine Div, Dept Mental Hlth, Okinawa, Japan.
RP Johnston, SL (reprint author), USN, Dept Mental Hlth, Hlth Clin Hawaii, Honolulu, HI 96860 USA.
NR 5
TC 3
Z9 4
U1 0
U2 2
PU ASSOC MILITARY SURG US
PI BETHESDA
PA 9320 OLD GEORGETOWN RD, BETHESDA, MD 20814 USA
SN 0026-4075
J9 MIL MED
JI Milit. Med.
PD MAY
PY 2009
VL 174
IS 5
BP 455
EP 459
PG 5
WC Medicine, General & Internal
SC General & Internal Medicine
GA 601LC
UT WOS:000278059800003
PM 20731274
ER
PT J
AU Almonte, ALC
AF Almonte, Angelica L. C.
TI Humanitarian Nursing Challenges: A Grounded Theory Study
SO MILITARY MEDICINE
LA English
DT Article
ID RELIEF
AB In response to the 2004 tsunami disaster in the Indian Ocean, the U.S. Navy deployed teams aboard the USNS Mercy to provide aid during Operation Unified Assistance (OUA). To date, few research studies have examined how Navy nurses prepared for and clinically performed during this relief operation. The current article describes the challenges faced by Navy nurses throughout OUA. A purposive convenience sample was recruited; 11 participated. Data were collected from interviews, observations, field notes, memos, and a demographic tool. Information was categorized, coded, compared to incoming data, then analyzed using Strauss and Corbin's open coding, axial coding, and selective coding methods. A theoretical model was developed to illustrate how participants experienced the mission. Key lessons learned were that most were unprepared for providing pediatric care, and saying "No" in delivering care. Recommendations include: deployment of advanced-practice nurses (specialists in pediatrics and well-mental health) and predeployment training on moral distress.
C1 USN, San Diego Med Ctr, San Diego, CA 92134 USA.
RP Almonte, ALC (reprint author), USN, San Diego Med Ctr, Bldg 6,Deck 4,34800 Bob Wilson Dr, San Diego, CA 92134 USA.
NR 19
TC 7
Z9 7
U1 0
U2 4
PU ASSOC MILITARY SURG US
PI BETHESDA
PA 9320 OLD GEORGETOWN RD, BETHESDA, MD 20814 USA
SN 0026-4075
J9 MIL MED
JI Milit. Med.
PD MAY
PY 2009
VL 174
IS 5
BP 479
EP 485
PG 7
WC Medicine, General & Internal
SC General & Internal Medicine
GA 601LC
UT WOS:000278059800006
PM 20731277
ER
PT J
AU Baczuk, R
Biascan, A
Grossgold, E
Isaacson, A
Spencer, J
Wisotzky, E
AF Baczuk, Rebecca
Biascan, Anthony
Grossgold, Erik
Isaacson, An
Spencer, Joel
Wisotzky, Eric
TI Sex Ratio Shift in Offspring of Male Fixed-Wing Naval Aviation Officers
SO MILITARY MEDICINE
LA English
DT Article
ID AIRCRAFT; PILOTS; BIRTH
AB The concept that aviators father more daughters than sons is a persistent rumor within aviation circles. This study was designed to determine the sex ratio among offspring of male fixed-wing naval aviation officers and to look for associations between sex ratio, flight hours, and mission. Through an online questionnaire, we asked for gender and date of birth of the child, monthly flying hours during the 4 months before conception, and the type of aircraft flown. Analysis revealed that the sex ratio of offspring from all participants in our study was not statistically significantly different from the general population. However, a significant sex ratio shift favoring daughters existed as the officer flew more hours during the 11th month before birth. As the implications of this are unknown, officers should be counseled that their chance of having a son or daughter is no different than the general population.
C1 [Baczuk, Rebecca; Biascan, Anthony; Grossgold, Erik; Isaacson, An; Spencer, Joel; Wisotzky, Eric] USN, Dept Clin Invest, San Diego Med Ctr, San Diego, CA 92134 USA.
RP Baczuk, R (reprint author), USN, Dept Clin Invest, San Diego Med Ctr, 34800 Bob Wilson Dr, San Diego, CA 92134 USA.
NR 16
TC 0
Z9 1
U1 0
U2 0
PU ASSOC MILITARY SURG US
PI BETHESDA
PA 9320 OLD GEORGETOWN RD, BETHESDA, MD 20814 USA
SN 0026-4075
J9 MIL MED
JI Milit. Med.
PD MAY
PY 2009
VL 174
IS 5
BP 523
EP 528
PG 6
WC Medicine, General & Internal
SC General & Internal Medicine
GA 601LC
UT WOS:000278059800014
PM 20731285
ER
PT J
AU Kotwal, RS
Butler, FK
Murray, CK
Hill, GJ
Rayfield, JC
Miles, EA
AF Kotwal, Russ S.
Butler, Frank K., Jr.
Murray, Clinton K.
Hill, Guyon J.
Rayfield, John C.
Miles, Ethan A.
TI Central Retinal Vein Occlusion in an Army Ranger With
Glucose-6-Phosphate Dehydrogenase Deficiency
SO MILITARY MEDICINE
LA English
DT Article
ID HYPERBARIC-OXYGEN-THERAPY; MACULAR EDEMA; INTRAVITREAL TRIAMCINOLONE;
THROMBOSIS; MANAGEMENT
AB Glucose-6-phosphate dehydrogenase (G6PD) deficiency is the most prevalent human enzyme deficiency, affecting an estimated 400 million people worldwide. G6PD deficiency increases erythrocyte vulnerability to oxidative stress and may precipitate episodes of hemolysis when individuals are exposed to triggering agents. Although central retinal vein occlusion (CRVO) does occur in G6PD-deficient individuals, G6PD-deficient individuals exposed to oxidative stressors have not been previously reported to have an increase in CRVO incidence. This is a case of an Army Ranger who deployed to Afghanistan with unrecognized G6PD deficiency and was placed on primaquine following his return to the United States and subsequently developed CRVO. Primaquine is a well-recognized cause of hemolysis in individuals with G6PD deficiency. Hemolytic anemia may contribute to thrombosis as a result of increased erythrocyte aggregation and erythrocyte endothelium interaction. This case underscores the continued need for routine G6PD screening and avoidance of known triggers in G6PD-deficient individuals.
C1 [Butler, Frank K., Jr.] USN, Operat Med Inst, Dept Ophthalmol, Pensacola, FL 32508 USA.
[Murray, Clinton K.] Brooke Army Med Ctr, Infect Dis Serv, Ft Sam Houston, TX 78234 USA.
[Hill, Guyon J.] 1st Special Forces Grp Airborne, Ft Lewis, WA 98433 USA.
[Rayfield, John C.] Brooke Army Med Ctr, Dept Emergency Med, Houston, TX 78234 USA.
RP Kotwal, RS (reprint author), 75th Ranger Regiment,6420 Dawson Loop, Ft Benning, GA 31905 USA.
NR 18
TC 1
Z9 1
U1 0
U2 0
PU ASSOC MILITARY SURG US
PI BETHESDA
PA 9320 OLD GEORGETOWN RD, BETHESDA, MD 20814 USA
SN 0026-4075
J9 MIL MED
JI Milit. Med.
PD MAY
PY 2009
VL 174
IS 5
BP 544
EP 547
PG 4
WC Medicine, General & Internal
SC General & Internal Medicine
GA 601LC
UT WOS:000278059800019
PM 20731290
ER
PT J
AU Kuhn, KM
Carney, J
Solomon, D
Provencher, M
AF Kuhn, Kevin M.
Carney, Joseph
Solomon, Daniel
Provencher, Matthew
TI Bilateral Absence of the Long Head of the Biceps Tendon
SO MILITARY MEDICINE
LA English
DT Article
ID ELECTROMYOGRAPHIC ANALYSIS; SHOULDER; INSTABILITY
AB Congenital absence of the long head of the biceps (LHB) tendon is a rare condition. The literature describes unilateral cases, associations with other congenital developmental anomalies, and associations with shoulder instability and SLAP tears. We present a case with bilateral absent LHB tendons and subacromial impingement pathology in a patient without a history of trauma or other congenital developmental abnormalities.
C1 [Kuhn, Kevin M.] USN, Hosp Guam, Dept Orthopaed, Agana Hts, GU 96919 USA.
[Carney, Joseph; Solomon, Daniel; Provencher, Matthew] USN, Med Ctr, San Diego Dept Orthopaed, San Diego, CA 92134 USA.
RP Kuhn, KM (reprint author), USN, Hosp Guam, Dept Orthopaed, Bldg 1,Farenhalt Ave,3rd Floor,B Wing, Agana Hts, GU 96919 USA.
NR 11
TC 2
Z9 3
U1 0
U2 2
PU ASSOC MILITARY SURG US
PI BETHESDA
PA 9320 OLD GEORGETOWN RD, BETHESDA, MD 20814 USA
SN 0026-4075
J9 MIL MED
JI Milit. Med.
PD MAY
PY 2009
VL 174
IS 5
BP 548
EP 550
PG 3
WC Medicine, General & Internal
SC General & Internal Medicine
GA 601LC
UT WOS:000278059800020
PM 20731291
ER
PT J
AU Reinecke, PA
Durran, D
AF Reinecke, Patrick A.
Durran, Dale
TI The Overamplification of Gravity Waves in Numerical Solutions to Flow
over Topography
SO MONTHLY WEATHER REVIEW
LA English
DT Article
ID MOUNTAIN WAVES; GENERAL-CIRCULATION; DRAG; SIMULATION; OROGRAPHY; EVENT;
MODEL
AB The tendency of high-resolution numerical weather prediction (NWP) models to overpredict the strength of vertically propagating mountain waves is explored. Discrete analytic mountain-wave solutions are presented for the classical problem of cross-mountain flow in an atmosphere with constant wind speed and stability. Time-dependent linear numerical solutions are also obtained for more realistic atmospheric structures. On one hand, using second-order-accurate finite differences on an Arakawa C grid to model nonhydrostatic flow over what might be supposed to be an adequately resolved 8 Delta x-wide mountain can lead to an overamplification of the standing mountain wave by 30%-40%. On the other hand, the same finite-difference scheme underestimates the wave amplitude in hydrostatic flow over an 8 Delta x-wide mountain. Increasing the accuracy of the advection scheme to the fourth order significantly reduces the numerical errors associated with both the hydrostatic and nonhydrostatic discrete solutions. The Coupled Ocean-Atmosphere Mesoscale Prediction System (COAMPS) model is used to generate two 70-member ensemble simulations of a mountain-wave event during the Terrain-Induced Rotor Experiment. It is shown that switching from second-order advection to fourth-order advection leads to as much as a 20 m s(-1) decrease in vertical velocity on the lee side of the Sierra Nevada, and that the weaker fourth-order solutions are more consistent with observations.
C1 [Reinecke, Patrick A.; Durran, Dale] Univ Washington, Dept Atmospher Sci, Seattle, WA 98195 USA.
RP Reinecke, PA (reprint author), USN, Res Lab, 7 Grace Hopper Ave, Monterey, CA 93943 USA.
EM alex.reinecke@nrlmry.navy.mil
RI Durran, Dale/G-3677-2015
OI Durran, Dale/0000-0002-6390-2584
FU Office of Naval Research [N-00014-06-1-0827]; Department of Defense
Major Shared Resource Center at Wright Patterson Air Force Base, Ohio;
NSF [ATM-0242886, ATM-0524891]
FX We thank James Doyle and Qingfang Jiang for many helpful discussions as
well as Ryan Torn and Greg Hakim for the use of their EnKF code and two
anonymous reviewers for their comments. This research was supported by
Office of Naval Research Grant N-00014-06-1-0827. Computational
resources were supported in part by a grant of HPC time from the
Department of Defense Major Shared Resource Center at Wright Patterson
Air Force Base, Ohio. COAMPS is a registered trademark of the Naval
Research Laboratory. The Mesonet data was gathered as part of TREX. The
primary sponsor of TREX was the U. S. National Science Foundation. The
acquisition of the data was carried out by the Desert Research Institute
(DRI) team ( PI Grubisic) funded in part by NSF Grants ATM-0242886 and
ATM-0524891 to DRI.
NR 22
TC 12
Z9 12
U1 1
U2 6
PU AMER METEOROLOGICAL SOC
PI BOSTON
PA 45 BEACON ST, BOSTON, MA 02108-3693 USA
SN 0027-0644
J9 MON WEATHER REV
JI Mon. Weather Rev.
PD MAY
PY 2009
VL 137
IS 5
BP 1533
EP 1549
DI 10.1175/2008MWR2630.1
PG 17
WC Meteorology & Atmospheric Sciences
SC Meteorology & Atmospheric Sciences
GA 451UC
UT WOS:000266495000003
ER
PT J
AU Langland, RH
Velden, C
Pauley, PM
Berger, H
AF Langland, Rolf H.
Velden, Christopher
Pauley, Patricia M.
Berger, Howard
TI Impact of Satellite-Derived Rapid-Scan Wind Observations on Numerical
Model Forecasts of Hurricane Katrina
SO MONTHLY WEATHER REVIEW
LA English
DT Article
ID CYCLONE TRACK FORECASTS; TARGETED OBSERVATIONS; DROPWINDSONDE DATA;
GUIDANCE; DOTSTAR; SYSTEMS
AB The impacts of special Geostationary Operational Environmental Satellite (GOES) rapid-scan (RS) wind observations on numerical model 24-120-h track forecasts of Hurricane Katrina are examined in a series of data assimilation and forecast experiments. The RS wind vectors are derived from geostationary satellites by tracking cloud motions through successive 5-min images. In these experiments, RS wind observations are added over the area 158-608N, 608-1108W, and they supplement the observations used in operational forecasts. The inclusion of RS wind observations reduces errors in numerical forecasts of the Katrina landfall position at 1200 UTC 29 August 2005 by an average of 12% compared to control cases that include "targeted" dropsonde observations in the Katrina environment. The largest average improvements are made to the 84-to 120-h Katrina track forecasts, rather than to the short-range track forecasts. These results suggest that RS wind observations can potentially be used in future cases to improve track forecasts of tropical cyclones.
C1 [Langland, Rolf H.; Pauley, Patricia M.] USN, Marine Meteorol Div, Res Lab, Monterey, CA 93943 USA.
[Velden, Christopher; Berger, Howard] Univ Wisconsin, CIMSS, Madison, WI USA.
RP Langland, RH (reprint author), USN, Marine Meteorol Div, Res Lab, 7 Grace Hopper Ave, Monterey, CA 93943 USA.
EM langland@nrlmry.navy.mil
FU Office of Naval Research and the Naval Research Laboratory
FX Funding for this study was provided by the Office of Naval Research and
the Naval Research Laboratory. Wind processing at CIMSS was assisted by
Dave Stettner.
NR 23
TC 24
Z9 25
U1 0
U2 2
PU AMER METEOROLOGICAL SOC
PI BOSTON
PA 45 BEACON ST, BOSTON, MA 02108-3693 USA
SN 0027-0644
J9 MON WEATHER REV
JI Mon. Weather Rev.
PD MAY
PY 2009
VL 137
IS 5
BP 1615
EP 1622
DI 10.1175/2008MWR2627.1
PG 8
WC Meteorology & Atmospheric Sciences
SC Meteorology & Atmospheric Sciences
GA 451UC
UT WOS:000266495000008
ER
PT J
AU Bulat, FA
Couchman, L
Yang, WT
AF Bulat, Felipe A.
Couchman, Luise
Yang, Weitao
TI Contact Geometry and Conductance of Crossed Nanotube Junctions under
Pressure
SO NANO LETTERS
LA English
DT Article
ID CARBON-NANOTUBE; ROOM-TEMPERATURE; SINGLE; FABRICATION; TRANSISTORS
AB We explored the relative stability, structure, and conductance of crossed nanotube junctions with dispersion corrected density functional theory. We found that the most stable junction geometry, not studied before, displays the smallest conductance. While the conductance increases as force is applied, it levels off very rapidly. This behavior contrasts with a less stable junction geometry that show steady increase of the conductance as force is applied. Electromechanical sensing devices based on this effect should exploit the conductance changes close to equilibrium.
C1 [Bulat, Felipe A.; Yang, Weitao] Duke Univ, Dept Chem, Durham, NC 27708 USA.
[Couchman, Luise] USN, Res Lab, Acoust Div, Washington, DC 20375 USA.
RP Yang, WT (reprint author), Duke Univ, Dept Chem, Durham, NC 27708 USA.
EM weitao.yang@duke.edu
RI Yang, Weitao/C-1109-2008
FU Office of Naval Research; National Science Foundation
FX W.Y. gratefully acknowledges financial support from the Office of Naval
Research and the National Science Foundation.
NR 34
TC 9
Z9 10
U1 1
U2 7
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1530-6984
J9 NANO LETT
JI Nano Lett.
PD MAY
PY 2009
VL 9
IS 5
BP 1759
EP 1763
DI 10.1021/nl803388m
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 446YF
UT WOS:000266157100006
PM 19331377
ER
PT J
AU Prabhakaran, K
Chapman, GD
Gunasekar, PG
AF Prabhakaran, Krishnan
Chapman, Gail D.
Gunasekar, Palur G.
TI BNIP3 up-regulation and mitochondrial dysfunction in manganese-induced
neurotoxicity
SO NEUROTOXICOLOGY
LA English
DT Article
DE Apoptosis; BNIP3; Oxidative stress; Mitochondrial dysfunction; Manganese
ID PERMEABILITY TRANSITION PORE; CELL-DEATH; OXIDATIVE STRESS;
NITRIC-OXIDE; BCL-2 FAMILY; MESENCEPHALIC CELLS; INDUCED APOPTOSIS;
PROTEIN BNIP3; EXPOSURE; CYANIDE
AB The central nervous system (CNS) appears to be the critical target of manganese (Mn), and neurotoxicity has been the focus of most of the health effects of manganese. In brain, the mechanism underlying the Mn-induced cell death is not clear. We have previously demonstrated that NF kappa beta induction and the activation of nitric oxide synthase through reactive oxygen species (ROS) represent a proximate mechanism for Mn-induced neurotoxicity. In this study, an immortalized dopaminergic cells were used to characterize the cell death signaling cascade activated by manganese. Exposure to Mn resulted in a time and concentration-related loss of cell viability as observed by 3-(4,5-dimethyl-2-thiazolyl)-2,5-diphenyl-2H-tetrazolium bromide (MTT) and live/dead cell assay. Mn increased BNIP3 expression within 3 h and continued to increase up to 24 h exposure followed by a concentration-related apoptotic death as determined by TUNEL Further, Mn treatment resulted in accumulation of reactive oxygen species and mitochondrial dysfunction with loss of mitochondrial membrane potential and release of cytochrome c. Antioxidants significantly reduced Mn-induced BNIP3 expression and attenuated cell death, demonstrating the role of oxidative stress in BNIP3 induction. Blocking BNIP3 up-regulation with a transcription or a translational inhibitor reduced the response to manganese. Cell death by manganese was reduced in the presence of CsA (PT pore inhibitor). In addition, knockdown of BNIP3 by small interfering RNA (siRNA) improved mitochondrial recovery and reduced neuronal cell loss suggesting that constitutive expression of BNIP3 plays a role in Mn-induced neurotoxicity by regulating mitochondrial functions. These findings indicate a potential detrimental role of BNIP3 in manganese-induced neuronal cell death. Published by Elsevier Inc.
C1 [Prabhakaran, Krishnan; Chapman, Gail D.; Gunasekar, Palur G.] USN, Hlth Res Ctr Detachment, Environm Hlth Effects Lab, Dayton, OH 45433 USA.
RP Gunasekar, PG (reprint author), USN, Hlth Res Ctr Detachment, Environm Hlth Effects Lab, 2729 R St,Area B,Bldg 837, Dayton, OH 45433 USA.
EM Palur.gunasekar@wpafb.af.mil
NR 34
TC 16
Z9 16
U1 2
U2 3
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0161-813X
J9 NEUROTOXICOLOGY
JI Neurotoxicology
PD MAY
PY 2009
VL 30
IS 3
BP 414
EP 422
DI 10.1016/j.neuro.2009.02.012
PG 9
WC Neurosciences; Pharmacology & Pharmacy; Toxicology
SC Neurosciences & Neurology; Pharmacology & Pharmacy; Toxicology
GA 448RH
UT WOS:000266279200011
PM 19442826
ER
PT J
AU Radcliffe, PM
Olabisi, AO
Wagner, DJ
Leavens, T
Wong, BA
Struve, MF
Chapman, GD
Wilfong, ER
Dorman, DC
AF Radcliffe, Pheona M.
Olabisi, Ayodele O.
Wagner, Dean J.
Leavens, Teresa
Wong, Brian A.
Struve, Melanie F.
Chapman, Gail D.
Wilfong, Erin R.
Dorman, David C.
TI Acute sodium tungstate inhalation is associated with minimal olfactory
transport of tungsten (W-188) to the rat brain
SO NEUROTOXICOLOGY
LA English
DT Article
DE Inhalation; Olfactory transport; Brain; Tungsten; Single-dose; Rat
ID PHARMACOKINETIC PARAMETERS; BEAGLE DOGS; MANGANESE; PATHWAYS; COBALT
AB Olfactory transport of represents an important mechanism for direct delivery of certain metals to the central nervous system (CNS). The objective of this study was to determine whether inhaled tungsten (W) undergoes olfactory uptake and transport to the rat brain. Male, 16-week-old, Sprague-Dawley rats underwent a single, 90-min, nose-only exposure to a (Na2WO4)-W-188 aerosol (256 mg W/m(3)). Rats had the right nostril plugged to prevent nasal deposition of W-188 on the occluded side. The left and right sides of the nose and brain, including the olfactory pathway and striatum, were sampled at 0, 1, 3, 7, and 21 days post-exposure. Gamma spectrometry (n = 7 rats/time point) was used to compare the levels of W-188 found on the left and right sides of the nose and brain and blood to determine the contribution of olfactory uptake to brain W-188 levels. Respiratory and olfactory epithelial samples from the side with the occluded nostril had significantly lower end-of-exposure 188 W levels confirming the occlusion procedure. Olfactory bulb, olfactory tract/tubercle, striatum, cerebellum, rest of brain W-188 levels paralleled blood W-188 concentrations at approximately 2-3% of measured blood levels. Brain W-188 concentrations were highest immediately following exposure, and returned to near background concentrations within 3 days. A statistically significant difference in olfactory bulb W-188 concentration was seen at 3 days post-exposure. At this time, W-188 concentrations in the olfactory bulb from the side ipsilateral to the unoccluded nostril were approximately 4-fold higher than those seen in the contralateral olfactory bulb. Our data suggest that the concentration of W-188 in the olfactory bulb remained low throughout the experiment, i.e., approximately 1-3% of the amount of tungsten seen in the olfactory epithelium suggesting that olfactory transport plays a minimal role in delivering tungsten to the rat brain. (C) 2009 Elsevier Inc. All rights reserved.
C1 [Leavens, Teresa; Struve, Melanie F.; Dorman, David C.] N Carolina State Univ, Coll Vet Med, Raleigh, NC 27606 USA.
[Radcliffe, Pheona M.] Colgate Palmol Co, Piscataway, NJ USA.
[Olabisi, Ayodele O.; Wagner, Dean J.; Chapman, Gail D.] USN, Hlth Res Ctr Detachment, Dayton, OH USA.
[Radcliffe, Pheona M.; Leavens, Teresa; Wong, Brian A.; Struve, Melanie F.; Dorman, David C.] Hamner Inst Hlth Sci, CIIT, Res Triangle Pk, NC USA.
[Wilfong, Erin R.] USN Acad, Dept Chem, Annapolis, MD USA.
RP Dorman, DC (reprint author), N Carolina State Univ, Coll Vet Med, 4700 Hillsborough St, Raleigh, NC 27606 USA.
EM david_dorman@ncsu.edu
OI Foster, Melanie/0000-0001-6392-7418
NR 16
TC 7
Z9 7
U1 1
U2 3
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0161-813X
J9 NEUROTOXICOLOGY
JI Neurotoxicology
PD MAY
PY 2009
VL 30
IS 3
BP 445
EP 450
DI 10.1016/j.neuro.2009.02.004
PG 6
WC Neurosciences; Pharmacology & Pharmacy; Toxicology
SC Neurosciences & Neurology; Pharmacology & Pharmacy; Toxicology
GA 448RH
UT WOS:000266279200015
PM 19442830
ER
PT J
AU Kress, M
Szechtman, R
AF Kress, Moshe
Szechtman, Roberto
TI Why Defeating Insurgencies Is Hard: The Effect of Intelligence in
Counterinsurgency Operations - A Best-Case Scenario
SO OPERATIONS RESEARCH
LA English
DT Article
ID MODEL
AB In insurgency situations, the government-organized force is confronted by a small guerrilla group that is dispersed in the general population with no or a very small signature. Effective counterinsurgency operations require good intelligence. Absent intelligence, not only might the insurgents escape unharmed and continue their violent actions, but collateral damage caused to the general population from poor targeting may generate adverse response against the government and create popular support for the insurgents, which may result in higher recruitment to the insurgency. We model the dynamic relations among intelligence, collateral casualties in the population, attrition, recruitment to the insurgency, and reinforcement to the government force. Even under best-case assumptions, we show that the government cannot totally eradicate the insurgency by force. The best it can do is contain it at a certain fixed level.
C1 [Kress, Moshe; Szechtman, Roberto] USN, Postgrad Sch, Dept Operat Res, Monterey, CA 93943 USA.
RP Kress, M (reprint author), USN, Postgrad Sch, Dept Operat Res, Monterey, CA 93943 USA.
EM mkress@nps.edu; rszechtm@nps.edu
FU Joint IED Defeat Organization ( JIEDDO); U.S. Army TRADOC Analysis
Center ( TRAC); Office of Naval Research ( ONR)
FX The work of both authors was partially supported by grants from the
Joint IED Defeat Organization ( JIEDDO), the U.S. Army TRADOC Analysis
Center ( TRAC), and the Office of Naval Research ( ONR).
NR 18
TC 19
Z9 19
U1 0
U2 15
PU INFORMS
PI HANOVER
PA 7240 PARKWAY DR, STE 310, HANOVER, MD 21076-1344 USA
SN 0030-364X
J9 OPER RES
JI Oper. Res.
PD MAY-JUN
PY 2009
VL 57
IS 3
BP 578
EP 585
DI 10.1287/opre.1090.0700
PG 8
WC Management; Operations Research & Management Science
SC Business & Economics; Operations Research & Management Science
GA 463BK
UT WOS:000267403200004
ER
PT J
AU Milder, E
Arnold, JC
AF Milder, Edmund
Arnold, John C.
TI Human Metapneumovirus and Human Bocavirus in Children
SO PEDIATRIC RESEARCH
LA English
DT Article
ID RESPIRATORY-TRACT INFECTIONS; REVERSE-TRANSCRIPTASE PCR; STEM-CELL
TRANSPLANT; SYNCYTIAL VIRUS; YOUNG-CHILDREN; HOSPITALIZED CHILDREN;
FRENCH CHILDREN; CLINICAL-MANIFESTATIONS; MOLECULAR EPIDEMIOLOGY;
PHYLOGENETIC ANALYSIS
AB Several new viruses have recently been described in children, including human metapneumovirus (hMPV) and human bocavirus (HBoV). hMPV has been established as a common cause of upper and lower respiratory tract infections in children, often second only to respiratory syncytial virus as a cause of bronchiolitis in infants. Diagnostic tools have been developed for the clinician and effective treatment and prevention strategies are being investigated. HBoV was more recently identified. Although it was initially identified in the airway of children, high rates of codetection of other viral pathogens and detection of the virus in the stool have raised questions about the true role of HBoV as a cause of respiratory infections. A focus on epidemiology, pathogenesis, clinical features, and diagnostic techniques for hMPV and HBoV is presented. (Pediatr Res 65: 78R-83R, 2009)
C1 [Milder, Edmund; Arnold, John C.] USN, Med Ctr, Dept Pediat, San Diego, CA 92134 USA.
RP Arnold, JC (reprint author), USN, Med Ctr, Dept Infect Dis, 34800 Bob Wilson Dr, San Diego, CA 92134 USA.
EM john.arnold@med.navy.mil
NR 90
TC 9
Z9 10
U1 0
U2 2
PU INT PEDIATRIC RESEARCH FOUNDATION, INC
PI BALTIMORE
PA 351 W CAMDEN ST, BALTIMORE, MD 21201-2436 USA
SN 0031-3998
J9 PEDIATR RES
JI Pediatr. Res.
PD MAY
PY 2009
VL 65
IS 5
BP 78R
EP 83R
PG 6
WC Pediatrics
SC Pediatrics
GA 436XH
UT WOS:000265448900012
PM 19190535
ER
PT J
AU Mazin, II
Schmalian, J
AF Mazin, I. I.
Schmalian, J.
TI Pairing symmetry and pairing state in ferropnictides: Theoretical
overview
SO PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS
LA English
DT Article
DE Unconventional superconductivity; Pnictides; Superconductivity and
magnetism
ID HIGH-TEMPERATURE SUPERCONDUCTIVITY; PNICTIDES; BA0.6K0.4FE2AS2;
PARAMETERS; TRANSITION; SCATTERING; ELECTRONS; MODEL; GAPS
AB We review the main ingredients for an unconventional pairing state in the ferropnictides, with particular emphasis on interband pairing due to magnetic fluctuations. Summarizing the key experimental prerequisites for such pairing, the electronic structure and nature of magnetic excitations, we discuss the properties of the s(+/-) state that emerges as a likely candidate pairing state for these materials and survey experimental evidence in favor of and against this novel state of matter. Published by Elsevier B.V.
C1 [Mazin, I. I.] USN, Res Lab, Washington, DC 20375 USA.
[Schmalian, J.] Iowa State Univ, Ames, IA 50011 USA.
[Schmalian, J.] Ames Lab, Ames, IA 50011 USA.
RP Mazin, II (reprint author), USN, Res Lab, Code 6391, Washington, DC 20375 USA.
EM maxin@nrl.navy.mil
RI Schmalian, Joerg/H-2313-2011; Mazin, Igor/B-6576-2008
FU Iowa State University [DE-AC02-07CH11358]; Office of Naval Research
FX This research was supported by the Ames Laboratory, operated for the US
Department of Energy by Iowa State University under Contract No.
DE-AC02-07CH11358 (J.S.), and by the Office of Naval Research (I.I.M.).
The authors wish to thank all their friends and collaborators, without
whom this works could not be accomplished, and their numerous colleagues
who read the manuscript and sent us many useful and insightful comments.
NR 99
TC 270
Z9 270
U1 2
U2 36
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0921-4534
J9 PHYSICA C
JI Physica C
PD MAY-JUN
PY 2009
VL 469
IS 9-12
BP 614
EP 627
DI 10.1016/j.physc.2009.03.019
PG 14
WC Physics, Applied
SC Physics
GA 460MJ
UT WOS:000267191500038
ER
PT J
AU Foster, S
Cranch, GA
Tikhomirov, A
AF Foster, Scott
Cranch, Geoffrey A.
Tikhomirov, Alexei
TI Experimental evidence for the thermal origin of 1/f frequency noise in
erbium-doped fiber lasers
SO PHYSICAL REVIEW A
LA English
DT Article
DE 1; f noise; distributed feedback lasers; fibre lasers
ID TEMPERATURE; FLUCTUATIONS; FEEDBACK; BEHAVIOR
AB We present experimental evidence in support of the recent theoretical proposal that intrinsic 1/f frequency noise in short cavity erbium-doped fiber lasers is of thermal origin. We demonstrate that the power spectral density of frequency noise in distributed-feedback fiber lasers (DFB FL) exhibits predicted T(2) temperature dependence across all frequencies over a temperature range of almost 200 K. This temperature dependence is observed both in direct interferometric measurements of frequency noise in a single mode DFB FL and noninterferometric measurements of polarization-beat-frequency noise in a dual frequency DFB FL. It is also shown that frequency noise of orthogonal polarization modes in the dual frequency DFB FL is substantially correlated providing a strong indication of a common origin.
C1 [Cranch, Geoffrey A.] USN, Res Lab, Washington, DC 20375 USA.
NR 21
TC 33
Z9 33
U1 4
U2 13
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 MAY
PY 2009
VL 79
IS 5
AR 053802
DI 10.1103/PhysRevA.79.053802
PG 7
WC Optics; Physics, Atomic, Molecular & Chemical
SC Optics; Physics
GA 451WF
UT WOS:000266500900172
ER
PT J
AU Greilich, A
Spatzek, S
Yugova, IA
Akimov, IA
Yakovlev, DR
Efros, AL
Reuter, D
Wieck, AD
Bayer, M
AF Greilich, A.
Spatzek, S.
Yugova, I. A.
Akimov, I. A.
Yakovlev, D. R.
Efros, Al. L.
Reuter, D.
Wieck, A. D.
Bayer, M.
TI Collective single-mode precession of electron spins in an ensemble of
singly charged (In,Ga)As/GaAs quantum dots
SO PHYSICAL REVIEW B
LA English
DT Article
DE electron spin; gallium arsenide; g-factor; III-V semiconductors; indium
compounds; magnetic moments; semiconductor quantum dots
AB We show that the spins of all electrons in an ensemble of singly charged (In,Ga)As/GaAs quantum dots can be driven into a single mode of precession about a magnetic field. This regime is achieved by allowing only this single mode within the electron-spin precession spectrum of the ensemble to be synchronized with a train of periodic optical excitation pulses. Under this condition a nuclei-induced frequency focusing leads to a shift of almost all spin precession frequencies into the synchronized mode. The macroscopic magnetic moment of the electron spins that is created in this regime precesses free of dephasing induced by inhomogeneous distribution of g factors.
C1 [Greilich, A.; Spatzek, S.; Akimov, I. A.; Yakovlev, D. R.; Bayer, M.] Tech Univ Dortmund, Expt Phys 2, D-44221 Dortmund, Germany.
[Yugova, I. A.] St Petersburg State Univ, Inst Phys, St Petersburg 198504, Russia.
[Akimov, I. A.; Yakovlev, D. R.] Russian Acad Sci, AF Ioffe Physicotech Inst, St Petersburg 194021, Russia.
[Efros, Al. L.] USN, Res Lab, Washington, DC 20375 USA.
[Reuter, D.; Wieck, A. D.] Ruhr Univ Bochum, D-44780 Bochum, Germany.
RP Greilich, A (reprint author), Tech Univ Dortmund, Expt Phys 2, D-44221 Dortmund, Germany.
RI Yugova, Irina/F-6823-2011; Akimov, Ilya/G-6748-2012; Wieck, Andreas
Dirk/C-5129-2009; Greilich, Alex/A-8927-2009
OI Yugova, Irina/0000-0003-0020-3679; Wieck, Andreas
Dirk/0000-0001-9776-2922;
FU BMBF; Deutsche Forschungsgemeinschaft [SPP1285]; Office of Naval
Research; Alexander-von-Humboldt Foundation
FX We thank A. Bracker for useful comments. We acknowledge support by the
BMBF project "nanoquit" and the Deutsche Forschungsgemeinschaft
(Contract No. SPP1285). A. L. E. acknowledges support of the Office of
Naval Research and Alexander-von-Humboldt Foundation.
NR 16
TC 21
Z9 21
U1 1
U2 5
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 MAY
PY 2009
VL 79
IS 20
AR 201305
DI 10.1103/PhysRevB.79.201305
PG 4
WC Physics, Condensed Matter
SC Physics
GA 451WL
UT WOS:000266501500016
ER
PT J
AU Lee, KI
Roh, JW
Chang, J
Han, SH
Shin, KH
Jeung, WY
Johnson, M
Lee, W
AF Lee, Kyoung-Il
Roh, Jong Wook
Chang, Joonyeon
Han, Suk-Hee
Shin, Kyung-Ho
Jeung, Won Yong
Johnson, Mark
Lee, Wooyoung
TI Electrical spin injection and detection in semimetallic Bi and Bi-Pb
films
SO PHYSICAL REVIEW B
LA English
DT Article
DE bismuth; bismuth alloys; Hanle effect; lead alloys; magnetoresistance;
semimetallic thin films; spin dynamics; spin polarised transport
ID LARGE MAGNETORESISTANCE; ELECTRONIC MEASUREMENT; TRANSPORT-PROPERTIES;
THIN-FILMS; BISMUTH; ORBIT
AB The spin injection technique is extended to semimetal bismuth samples in a lateral spin valve geometry. We study spin injection, diffusion, and detection in a material system where a small change in sample stoichiometry results in a large change in the electronic and spin dependent transport properties of the nonmagnetic material. Measurements of magnetoresistance, using a magnetic field applied in the sample plane, as well as the Hanle effect, using a field applied perpendicular to the sample plane, are reported. We demonstrate two remarkable results: (i) a spin diffusion length of 230 mu m (T=2 K) in a BiPb sample with temperature dependent resistivity, rho(T), which decreases with decreasing T is the longest known value in a thin film; (ii) the interfacial spin polarization is 10% in BiPb samples with decreasing rho(T) and an order of magnitude smaller (0.8%) in Bi samples where rho(T) increases with decreasing T.
C1 [Lee, Kyoung-Il; Roh, Jong Wook; Lee, Wooyoung] Yonsei Univ, Dept Mat Sci & Engn, Seoul 120749, South Korea.
[Lee, Kyoung-Il; Chang, Joonyeon; Han, Suk-Hee; Shin, Kyung-Ho; Jeung, Won Yong] Korea Inst Sci & Technol, Seoul 136791, South Korea.
[Johnson, Mark] USN, Res Lab, Washington, DC 20375 USA.
RP Lee, KI (reprint author), Yonsei Univ, Dept Mat Sci & Engn, Seoul 120749, South Korea.
EM mark.b.johnson@nrl.navy.mil; wooyoung@yonsei.ac.kr
FU Ministry of Knowledge Economy, KOSEF [R15-2004-024-00000-0]; Korean
Government (MOEHRD) [KRF-2007-314-C00107]; KIST Institutional Program;
MEST; Office of Naval Research [N000-1405AF-00002]
FX This work was supported by a grant from the Fundamental R&D Program for
Core Technology of Materials funded by the Ministry of Knowledge
Economy, KOSEF through National Core Research Center for Nanomedical
Technology, the Basic Research Program (R15-2004-024-00000-0), the Korea
Research Foundation Grant funded by the Korean Government (MOEHRD, Basic
Research Promotion Fund KRF-2007-314-C00107), the KIST Institutional
Program and the TND Frontier Project funded by MEST. M.J. acknowledges
the support of the Office of Naval Research through Grant No.
N000-1405AF-00002.
NR 30
TC 4
Z9 4
U1 0
U2 8
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 MAY
PY 2009
VL 79
IS 19
AR 195201
DI 10.1103/PhysRevB.79.195201
PG 6
WC Physics, Condensed Matter
SC Physics
GA 451WJ
UT WOS:000266501300062
ER
PT J
AU Sprangle, P
Hafizi, B
Penano, JR
AF Sprangle, P.
Hafizi, B.
Penano, J. R.
TI Laser-pumped coherent x-ray free-electron laser
SO PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS
LA English
DT Article
ID TRANSVERSE MAGNETIC-FIELD; HIGH-GAIN REGIME; SASE-FEL; RELATIVISTIC
ELECTRONS; SPONTANEOUS EMISSION; STIMULATED-EMISSION; RADIATION;
SCATTERING; SIMULATION; AMPLIFIERS
AB In a laser-pumped x-ray free-electron laser (FEL) an intense laser field replaces the magnetic wiggler field of a conventional FEL. Depending on the intensity and quality of both the electron beam and pump laser, the Thomson backscattered radiation can be coherently amplified. In a conventional FEL the generation of x rays requires electron beam energies in the multi-GeV range. In a laser-pumped x-ray FEL, electron beam energies in the multi-MeV range would be sufficient. To generate coherent x rays with this mechanism a number of physics and technology issues must be addressed. Foremost among these are the stringent requirements placed on the electron beam quality and brightness as well as on the pump laser. The seed radiation for the laser-pumped FEL is the laser-induced spontaneous radiation. The evolution of incoherent radiation into coherent radiation as well as the power gain lengths associated with the coherent x rays are analyzed and discussed. There is excellent agreement between our analytical results and GENESIS simulations for the radiated power, gain length, conversion efficiency, linewidth, and saturation length. These issues, as well as others, necessary to achieve coherent amplified x rays in a laser-pumped FEL are discussed. While a coherent x-ray source would have a number of attractive features, the requirements placed on both the electron beam and pump laser are extremely challenging.
C1 [Sprangle, P.; Hafizi, B.; Penano, J. R.] USN, Res Lab, Div Plasma Phys, Washington, DC 20375 USA.
[Hafizi, B.] Icarus Res Inc, Bethesda, MD 20824 USA.
RP Sprangle, P (reprint author), USN, Res Lab, Div Plasma Phys, Washington, DC 20375 USA.
FU NRL; ONR
FX This work was supported by NRL and ONR.
NR 44
TC 30
Z9 30
U1 0
U2 6
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 MAY
PY 2009
VL 12
IS 5
AR 050702
DI 10.1103/PhysRevSTAB.12.050702
PG 12
WC Physics, Nuclear; Physics, Particles & Fields
SC Physics
GA 454QP
UT WOS:000266697700006
ER
PT J
AU Walton, SG
Fernsler, RF
AF Walton, S. G.
Fernsler, R. F.
TI Symmetric extraction of positive and negative ions from electron
beam-generated ion-ion plasmas
SO PLASMA SOURCES SCIENCE & TECHNOLOGY
LA English
DT Article
AB Ion-ion plasmas are plasmas in which the dominant negative charge carriers are negative ions rather than electrons, and these plasmas are believed to have certain advantages in a number of applications. Many applications require ion energies of 10 eV or more, which is well above the expected energy of ions leaving ion-ion plasmas. The techniques used to achieve these energies in electron-rich plasmas must be modified to work with ion-ion plasmas. This paper describes a technique for producing alternating fluxes of positive and negative ions to a substrate. With the described circuit, the fluxes can be equivalent in either magnitude or peak energy.
C1 [Walton, S. G.; Fernsler, R. F.] USN, Res Lab, Div Plasma Phys, Washington, DC 20375 USA.
RP Walton, SG (reprint author), USN, Res Lab, Div Plasma Phys, Washington, DC 20375 USA.
FU Office of Naval Research
FX This work was supported by the Office of Naval Research.
NR 11
TC 6
Z9 6
U1 0
U2 2
PU IOP PUBLISHING LTD
PI BRISTOL
PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND
SN 0963-0252
J9 PLASMA SOURCES SCI T
JI Plasma Sources Sci. Technol.
PD MAY
PY 2009
VL 18
IS 2
AR 022001
DI 10.1088/0963-0252/18/2/022001
PG 4
WC Physics, Fluids & Plasmas
SC Physics
GA 438UL
UT WOS:000265580800001
ER
PT J
AU Robertson, CG
Bogoslovov, R
Roland, CM
AF Robertson, C. G.
Bogoslovov, R.
Roland, C. M.
TI STRUCTURAL ARREST AND THERMODYNAMIC SCALING IN FILLER-REINFORCED
POLYMERS
SO RUBBER CHEMISTRY AND TECHNOLOGY
LA English
DT Article
ID LIQUID-LIQUID TRANSITION; LOCAL SEGMENTAL DYNAMICS; GLASS-FORMING
LIQUIDS; CARBON-BLACK; TEMPERATURE-DEPENDENCE; SUPERCOOLED LIQUIDS;
SHEAR VISCOSITY; FREE-VOLUME; RUBBER; RELAXATION
AB The role of small silica particles on the stiffness and glass transition dynamics of polyvinyl acetate (PVAc) was examined for filler volume fraction (phi) from 0 to 0.28. Whereas the influences of bound polymer and a strain-dependent filler network were clearly noted in the shear properties, the only effect of filler on the bulk modulus was the reduction in deformable polymer. The calorimetric glass transition of PVAc and its dependence on cooling rate were unaltered by the presence of the silica, in agreement with previous dielectric relaxation results. In contrast to the temperature dependence of the segmental dynamics, which was independent of phi, the effect of volume on segmental relaxation was amplified by the addition of silica. This resulted in larger values for the thermodynamic scaling exponent (gamma), which also increased sharply at the filler concentration corresponding to the development of a percolated filler network.
C1 [Bogoslovov, R.; Roland, C. M.] USN, Res Lab, Div Chem, Washington, DC 20375 USA.
[Robertson, C. G.] Ctr Res & Technol, Akron, OH 44317 USA.
RP Roland, CM (reprint author), USN, Res Lab, Div Chem, Code 6120, Washington, DC 20375 USA.
EM Roland@nrl.navy.mil
RI Robertson, Christopher/J-1812-2012
OI Robertson, Christopher/0000-0002-4217-5429
FU Office of Naval Research
FX The work at NRL was supported by the Office of Naval Research. CGR
thanks Bridgestone Americas for permission to publish and RB the
American Society of Engineering Education for a post-doctoral
appointment. Enlightening comments of P.H. Mott are gratefully
acknowledged. We thank P. Sadhukhan for TEM images.
NR 64
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U1 0
U2 4
PU AMER CHEMICAL SOC INC
PI AKRON
PA RUBBER DIV UNIV AKRON PO BOX 499, AKRON, OH 44309-0499 USA
SN 0035-9475
EI 1943-4804
J9 RUBBER CHEM TECHNOL
JI Rubber Chem. Technol.
PD MAY-JUN
PY 2009
VL 82
IS 2
BP 202
EP 213
DI 10.5254/1.3548245
PG 12
WC Polymer Science
SC Polymer Science
GA 558DO
UT WOS:000274721200007
ER
PT J
AU Liewer, PC
De Jong, EM
Hall, JR
Howard, RA
Thompson, WT
Culhane, JL
Bone, L
van Driel-Gesztelyi, L
AF Liewer, P. C.
De Jong, E. M.
Hall, J. R.
Howard, R. A.
Thompson, W. T.
Culhane, J. L.
Bone, L.
van Driel-Gesztelyi, L.
TI Stereoscopic Analysis of the 19 May 2007 Erupting Filament
SO SOLAR PHYSICS
LA English
DT Article
DE Corona; Prominences; Filaments; Eruptions; Stereoscopy
ID MAGNETIC CLOUDS; SOLAR-FLARES; PROMINENCES; DYNAMICS; SECCHI; EUVI
AB A filament eruption, accompanied by a B9.5 flare, coronal dimming, and an EUV wave, was observed by the Solar TERrestrial Relations Observatory (STEREO) on 19 May 2007, beginning at about 13:00 UT. Here, we use observations from the SECCHI/EUVI telescopes and other solar observations to analyze the behavior and geometry of the filament before and during the eruption. At this time, STEREO A and B were separated by about 8.5A degrees, sufficient to determine the three-dimensional structure of the filament using stereoscopy. The filament could be followed in SECCHI/EUVI 304 A... stereoscopic data from about 12 hours before to about 2 hours after the eruption, allowing us to determine the 3D trajectory of the erupting filament. From the 3D reconstructions of the filament and the chromospheric ribbons in the early stage of the eruption, simultaneous heating of both the rising filamentary material and the chromosphere directly below is observed, consistent with an eruption resulting from magnetic reconnection below the filament. Comparisons of the filament during eruption in 304 A... and H alpha show that when it becomes emissive in He II, it tends to disappear in H alpha , indicating that the disappearance probably results from heating or motion, not loss, of filamentary material.
C1 [Liewer, P. C.; De Jong, E. M.; Hall, J. R.] CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA.
[Howard, R. A.] USN, Res Lab, Washington, DC 20375 USA.
[Thompson, W. T.] Adnet Syst Inc, Lanham, MD 20706 USA.
[Culhane, J. L.; Bone, L.; van Driel-Gesztelyi, L.] Univ Coll London, Mullard Space Sci Lab, Dorking RH5 6NT, Surrey, England.
[van Driel-Gesztelyi, L.] Observ Paris, CNRS, FRE 2461, LESIA, F-92195 Meudon, France.
Hungarian Acad Sci, Konkoly Observ Budapest, Budapest, Hungary.
RP Liewer, PC (reprint author), CALTECH, Jet Prop Lab, 4800 Oak Grove Dr, Pasadena, CA 91109 USA.
EM Paulett.Liewer@jpl.nasa.gov
RI Thompson, William/D-7376-2012
FU NASA; USAF Space Test Program; Office of Naval Research; European
Commission [218816]
FX We thank K.E.J. Kilpua, Y.Li, J. Luhmann, B. Lynch, S. Martin, O.
Penasco, and A. Vourlidas for very valuable conversation on this solar
event. We thank N. Rich, S. Suzuki, and J.-P. Wuesler for their help
with the SECCHI/EUVI data. The STEREO/SECCHI data used here are produced
by an international consortium of the Naval Research Laboratory (USA),
Lockheed-Martin Solar and Astrophysics Lab (USA), NASA Goddard Space
Flight Center (USA), Rutherford Appleton Laboratory (UK), University of
Birmingham ( UK), Max-Planck-Institut fur Sonnensystemforschung
(Germany), Centre Spatiale de Liege (Belgium), Institut d'Optique
Theorique et Appliquee (France), Institut d'Astrophysique Spatiale
(France). The USA institutions were funded by NASA; the UK institutions
by Particle Physics and Astronomy Research Council (PPARC); the German
institutions by Deutsches Zentrum fur Luft- und Raumfahrt e. V. (DLR);
the Belgian institutions by Belgian Science Policy Office; the French
institutions by Centre National d'Etudes Spatiales (CNES) and the Centre
National de la Recherche Scientifique (CNRS). The NRL effort was also
supported by the USAF Space Test Program and the Office of Naval
Research. A portion of this work was carried out at the Jet Propulsion
Laboratory, California Institute of Technology under a contract with
NASA. J.L.C. acknowledges the award of a Leverhulme Emeritus Fellowship.
Financial support for LvDG by the European Commission through the
SOTERIA Network (EU FP7 Space Science Project No. 218816) is gratefully
acknowledged.
NR 25
TC 60
Z9 62
U1 0
U2 0
PU SPRINGER
PI DORDRECHT
PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS
SN 0038-0938
J9 SOL PHYS
JI Sol. Phys.
PD MAY
PY 2009
VL 256
IS 1-2
BP 57
EP 72
DI 10.1007/s11207-009-9363-4
PG 16
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 438OC
UT WOS:000265563900004
ER
PT J
AU Thernisien, A
Vourlidas, A
Howard, RA
AF Thernisien, A.
Vourlidas, A.
Howard, R. A.
TI Forward Modeling of Coronal Mass Ejections Using STEREO/SECCHI Data
SO SOLAR PHYSICS
LA English
DT Article
DE Solar corona; CME; Forward modeling; Stereoscopy
ID WHITE-LIGHT IMAGES; SOLAR CORONA; ROTATIONAL TOMOGRAPHY;
ELECTRON-DENSITY; CONE MODEL; RECONSTRUCTION; GEOMETRY; LASCO;
TRANSIENT; CMES
AB We describe a forward modeling method developed to study the coronal mass ejections observed with STEREO/SECCHI. We present a survey of 26 CMEs modeled with this method. We selected most of the bright events observed since November 2007 to August 2008, after when the separation was greater than 40A degrees degrees, thus showing noticeable differences between the two views. From these stereoscopic observations and using a geometric model of a flux rope, we are able to determine the three-dimensional direction of propagation, the three-dimensional velocity and acceleration of the CME front, and in most of the cases the flux rope orientation and length. We define a merit function that allows us to partially automate the fit, as well as perform a sensitivity analysis on the model parameters. We find a precision on the longitude and latitude to be of a maximum of +/- 17A degrees and +/- 4A degrees, respectively, for a 10% decrease of the merit function but a precision on the flux rope orientation and length to be almost one order of magnitude larger, showing that these parameters are more difficult to estimate using only coronagraph data. Finally, comparison with independent measurements shows a good agreement with the direction and speed we estimated.
C1 [Thernisien, A.] Univ Space Res Assoc, Columbia, MD 21044 USA.
[Vourlidas, A.; Howard, R. A.] USN, Res Lab, Washington, DC 20375 USA.
RP Thernisien, A (reprint author), Univ Space Res Assoc, 10211 Wincopin Circle,Suite 620, Columbia, MD 21044 USA.
EM arnaud.thernisien@nrl.navy.mil; angelos.vourlidas@nrl.navy.mil;
russell.howard@nrl.navy.mil
RI Vourlidas, Angelos/C-8231-2009
OI Vourlidas, Angelos/0000-0002-8164-5948
FU NASA; USAF Space Test Program; Office of Naval Research
FX The STEREO/SECCHI data used here are produced by an international
consortium of the Naval Research Laboratory (USA), Lockheed Martin Solar
and Astrophysics Lab (USA), NASA God-dard Space Flight Center (USA),
Rutherford Appleton Laboratory (UK), University of Birmingham (UK),
Max-Planck-Institut fur Sonnensystemforschung (Germany), Centre Spatiale
de Liege (Belgium), Institut d'Optique Theorique et Appliquee (France),
and Institut d'Astrophysique Spatiale (France). The NRL effort was
supported by NASA, the USAF Space Test Program, and the Office of Naval
Research.
NR 42
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U1 3
U2 5
PU SPRINGER
PI DORDRECHT
PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS
SN 0038-0938
J9 SOL PHYS
JI Sol. Phys.
PD MAY
PY 2009
VL 256
IS 1-2
BP 111
EP 130
DI 10.1007/s11207-009-9346-5
PG 20
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 438OC
UT WOS:000265563900008
ER
PT J
AU Harrison, RA
Davies, JA
Rouillard, AP
Davis, CJ
Eyles, CJ
Bewsher, D
Crothers, SR
Howard, RA
Sheeley, NR
Vourlidas, A
Webb, DF
Brown, DS
Dorrian, GD
AF Harrison, Richard A.
Davies, Jackie A.
Rouillard, Alexis P.
Davis, Christopher J.
Eyles, Christopher J.
Bewsher, Danielle
Crothers, Steve R.
Howard, Russell A.
Sheeley, Neil R.
Vourlidas, Angelos
Webb, David F.
Brown, Daniel S.
Dorrian, Gareth D.
TI Two Years of the STEREO Heliospheric Imagers Invited Review
SO SOLAR PHYSICS
LA English
DT Review
DE Coronal mass ejection; Heliosphere; Solar wind; Co-rotating interaction
regions
ID CORONAL MASS EJECTION; SOLAR-WIND; INTERPLANETARY SCINTILLATION;
SUNGRAZING COMETS; SECCHI; EARTH; SMEI; TAIL; BRIGHTNESS; EVOLUTION
AB Imaging of the heliosphere is a burgeoning area of research. As a result, it is awash with new results, using novel applications, and is demonstrating great potential for future research in a wide range of topical areas. The STEREO (Solar TErrestrial RElations Observatory) Heliospheric Imager (HI) instruments are at the heart of this new development, building on the pioneering observations of the SMEI (Solar Mass Ejection Imager) instrument aboard the Coriolis spacecraft. Other earlier heliospheric imaging systems have included ground-based interplanetary scintillation (IPS) facilities and the photometers on the Helios spacecraft. With the HI instruments, we now have routine wide-angle imaging of the inner heliosphere, from vantage points outside the Sun-Earth line. HI has been used to investigate the development of coronal mass ejections (CMEs) as they pass through the heliosphere to 1 AU and beyond. Synoptic mapping has also allowed us to see graphic illustrations of the nature of mass outflow as a function of distance from the Sun - in particular, stressing the complexity of the near-Sun solar wind. The instruments have also been used to image co-rotating interaction regions (CIRs), to study the interaction of comets with the solar wind and CMEs, and to witness the impact of CMEs and CIRs on planets. The very nature of this area of research - which brings together aspects of solar physics, space-environment physics, and solar-terrestrial physics - means that the research papers are spread among a wide range of journals from different disciplines. Thus, in this special issue, it is timely and appropriate to provide a review of the results of the first two years of the HI investigations.
C1 [Harrison, Richard A.; Davies, Jackie A.; Rouillard, Alexis P.; Davis, Christopher J.; Eyles, Christopher J.; Bewsher, Danielle; Crothers, Steve R.] STFC Rutherford Appleton Lab, Space Sci & Technol Dept, Didcot OX11 0QX, Oxon, England.
[Rouillard, Alexis P.] Univ Southampton, Sch Phys & Astron, Space Environm Phys Grp, Southampton SO17 1BJ, Hants, England.
[Eyles, Christopher J.] Univ Birmingham, Sch Phys & Astron, Birmingham B15 2TT, W Midlands, England.
[Eyles, Christopher J.] Univ Valencia, Lab Procesado Imagenes, Valencia 46071, Spain.
[Bewsher, Danielle; Brown, Daniel S.; Dorrian, Gareth D.] Aberystwyth Univ, Inst Math & Phys, Aberystwyth SY23 3BZ, Dyfed, Wales.
[Howard, Russell A.; Sheeley, Neil R.; Vourlidas, Angelos] USN, Res Lab, Div Space Sci, Washington, DC 20375 USA.
[Webb, David F.] Boston Coll, Inst Sci Res, Chestnut Hill, MA 02167 USA.
[Webb, David F.] AF Res Lab, AFB, MA USA.
RP Harrison, RA (reprint author), STFC Rutherford Appleton Lab, Space Sci & Technol Dept, Didcot OX11 0QX, Oxon, England.
EM r.harrison@rl.ac.uk
RI Vourlidas, Angelos/C-8231-2009; Scott, Christopher/H-8664-2012;
OI Vourlidas, Angelos/0000-0002-8164-5948; Scott,
Christopher/0000-0001-6411-5649; Brown, Daniel/0000-0002-1618-8816;
Bewsher, Danielle/0000-0002-6351-5170
NR 41
TC 30
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U1 0
U2 1
PU SPRINGER
PI DORDRECHT
PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS
SN 0038-0938
J9 SOL PHYS
JI Sol. Phys.
PD MAY
PY 2009
VL 256
IS 1-2
BP 219
EP 237
DI 10.1007/s11207-009-9352-7
PG 19
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 438OC
UT WOS:000265563900014
ER
PT J
AU Webb, DF
Howard, TA
Fry, CD
Kuchar, TA
Odstrcil, D
Jackson, BV
Bisi, MM
Harrison, RA
Morrill, JS
Howard, RA
Johnston, JC
AF Webb, D. F.
Howard, T. A.
Fry, C. D.
Kuchar, T. A.
Odstrcil, D.
Jackson, B. V.
Bisi, M. M.
Harrison, R. A.
Morrill, J. S.
Howard, R. A.
Johnston, J. C.
TI Study of CME Propagation in the Inner Heliosphere: SOHO LASCO, SMEI and
STEREO HI Observations of the January 2007 Events
SO SOLAR PHYSICS
LA English
DT Article
DE Coronal mass ejections; Corona; Interplanetary plasma
ID CORONAL MASS EJECTIONS; INTERPLANETARY SCINTILLATION; IMAGER SMEI;
MISSION; SUN; DISTURBANCES; BRIGHTNESS; VELOCITIES; TRANSIENT; SECCHI
AB We are investigating the geometric and kinematic characteristics of interplanetary coronal mass ejections (ICMEs) using data obtained by the LASCO coronagraphs, the Solar Mass Ejection Imager (SMEI), and the SECCHI imaging experiments on the STEREO spacecraft. The early evolution of CMEs can be tracked by the LASCO C2 and C3 and SECCHI COR1 and COR2 coronagraphs, and the HI and SMEI instruments can track their ICME counterparts through the inner heliosphere. The HI fields of view (4 -aEuro parts per thousand 90A degrees) overlap with the SMEI field of view (> 20A degrees to all sky) and, thus, both instrument sets can observe the same ICME. In this paper we present results for ICMEs observed on 24 -aEuro parts per thousand 29 January 2007, when the STEREO spacecraft were still near Earth so that both the SMEI and STEREO views of large ICMEs in the inner heliosphere coincided. These results include measurements of the structural and kinematic evolution of two ICMEs and comparisons with drive/drag kinematic, 3D tomographic reconstruction, the HAFv2 kinematic, and the ENLIL MHD models. We find it encouraging that the four model runs generally were in agreement on both the kinematic evolution and appearance of the events. Because it is essential to understand the effects of projection across large distances, that are not generally crucial for events observed closer to the Sun, we discuss our analysis procedure in some detail.
C1 [Webb, D. F.; Kuchar, T. A.] Boston Coll, Inst Sci Res, Chestnut Hill, MA 02167 USA.
[Webb, D. F.; Kuchar, T. A.; Johnston, J. C.] Space Vehicles Directorate, AF Res Lab, Hanscom AFB, MA USA.
[Howard, T. A.] Natl Solar Observ, AF Res Lab, Sunspot, NM 88349 USA.
[Fry, C. D.] Explorat Phys Int Inc, Huntsville, AL USA.
[Odstrcil, D.] Univ Colorado, Cooperat Inst Res Environm Sci, Boulder, CO 80309 USA.
[Odstrcil, D.] Natl Ocean & Atmospher Adm, Space Weather Predict Ctr, Boulder, CO USA.
[Jackson, B. V.; Bisi, M. M.] Univ Calif San Diego, Ctr Astrophys & Space Sci, La Jolla, CA 92093 USA.
[Harrison, R. A.] Rutherford Appleton Lab, Space Sci & Technol Dept, Space Phys Div, Didcot OX11 0QX, Oxon, England.
[Morrill, J. S.; Howard, R. A.] USN, Res Lab, Div Space Sci, Washington, DC 20375 USA.
RP Webb, DF (reprint author), Boston Coll, Inst Sci Res, Chestnut Hill, MA 02167 USA.
EM david.webb@hanscom.af.mil
RI Bisi, Mario/C-6376-2009
FU Air Force; University of Birmingham; NASA [NNG05GG45G, NNGO5GF98G];
AFOSR [F49620-02C-0015]; AFRL [FA9550-06-1-0107, FA8718-06-C-0015,
F61775-02-WE043]; NSF [ATM-0331513]; AURA [C10562N]; Navy grants
[N00173-01-1-G013, N00173-07-1-G016]; AFOSR/MURI; NASA/LWS; NSF/CISM
FX We acknowledge P. P. Hick and A. Buffington for their efforts in the
calibration and processing of SMEI data at UCSD. We thank C. Eyles of
the University of Birmingham, UK, for SECCHI HI data, J. Davies of the
Rutherford Appleton Laboratory for HI image processing, and V. Kunkel of
NRL for SECCHI distance-time measurements. SMEI is a collaborative
project of the US Air Force Research Laboratory, NASA, the University of
California at San Diego, the University of Birmingham, UK, Boston
College, and Boston University. Financial support has been provided by
the Air Force, the University of Birmingham, and NASA. The Heliospheric
Imager (HI) instrument was developed by a collaboration that included
the Rutherford Appleton Laboratory and the University of Birmingham,
both in the United Kingdom, the Centre Spatial de Liege (CSL), Belgium,
and the US Naval Research Laboratory (NRL), Washington DC, USA. The
STEREO/SECCHI project is an international consortium of the Naval
Research Laboratory (USA), Lockheed Martin Solar and Astrophysics Lab
(USA), NASA Goddard Space Flight Center (USA), Rutherford Appleton
Laboratory (UK), University of Birmingham (UK), Max-Planck-Institut fur
Sonnen-systemforschung (Germany), Centre Spatial de Liege (Belgium),
Institut d'Optique Theorique et Appliquee (France), and Institut
d'Astrophysique Spatiale (France). We also acknowledge use of the CME
catalog that is generated and maintained at the CDAW Data Center by NASA
and The Catholic University of America in cooperation with the Naval
Research Laboratory. SOHO is a project of international cooperation
between ESA and NASA. This work was supported for each coauthor by these
sources: T. A. H. by the National Research Council Fellowship Program,
funded by AFOSR contract F49620-02C-0015; B. V. J. and M. M. B. at UCSD
by AFRL contract FA9550-06-1-0107, NSF grant ATM-0331513 and NASA grant
NNG05GG45G; D. F. W., T. A. K. and D. R. M. at Boston College by AFRL
contract FA8718-06-C-0015; S. J. T. under contract F61775-02-WE043 to
the University of Birmingham; and C. D. F. at EXPI by AURA contract
C10562N. D. F. W., T. A. H. and B. V. J. also were supported by NASA
grant NNGO5GF98G, and D. F. W. by Navy grants N00173-01-1-G013 and
N00173-07-1-G016. D.O. was supported by AFOSR/MURI, NASA/LWS, and
NSF/CISM grants.
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PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS
SN 0038-0938
J9 SOL PHYS
JI Sol. Phys.
PD MAY
PY 2009
VL 256
IS 1-2
BP 239
EP 267
DI 10.1007/s11207-009-9351-8
PG 29
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 438OC
UT WOS:000265563900015
ER
PT J
AU Lugaz, N
Vourlidas, A
Roussev, II
Morgan, H
AF Lugaz, N.
Vourlidas, A.
Roussev, I. I.
Morgan, H.
TI Solar-Terrestrial Simulation in the STEREO Era: The 24-25 January 2007
Eruptions
SO SOLAR PHYSICS
LA English
DT Article
DE Coronal mass ejections (CMEs); MHD; Solar-terrestrial relation;
Heliospheric observations
ID CORONAL MASS EJECTIONS; 3-DIMENSIONAL MHD SIMULATION;
NUMERICAL-SIMULATION; DENSITY STRUCTURES; SUN; MODEL; EARTH; WIND; CME;
EVOLUTION
AB The SECCHI instruments aboard the recently launched STEREO spacecraft enable for the first time the continuous tracking of coronal mass ejections (CMEs) from the Sun to 1 AU. We analyze line-of-sight observations of the 24 -aEuro parts per thousand 25 January 2007 CMEs and fill the 20-hour gap in SECCHI coverage in 25 January by performing a numerical simulation using a three-dimensional magneto-hydrodynamic (MHD) code, the Space Weather Modeling Framework (SWMF). We show how the observations reflect the interaction of the two successive CMEs with each other and with the structured solar wind. We make a detailed comparison between the observations and synthetic images from our model, including time-elongation maps for several position angles. Having numerical simulations to disentangle observational from physical effects, we are able to study the three-dimensional nature of the ejections and their evolution in the inner heliosphere. This study reflects the start of a new era where, on one hand, models of CME propagation and interaction can be fully tested by using heliospheric observations and, on the other hand, observations can be better interpreted by using global numerical models.
C1 [Lugaz, N.; Roussev, I. I.; Morgan, H.] Univ Hawaii Manoa, Inst Astron, Honolulu, HI 96822 USA.
[Vourlidas, A.] USN, Res Lab, Washington, DC 20375 USA.
[Morgan, H.] Prifysgol Aberystwyth, Sefydliad Mathemateg Ffiseg, Ceredigion SY23 3BZ, Cymru, Wales.
RP Lugaz, N (reprint author), Univ Hawaii Manoa, Inst Astron, 2680 Woodlawn Dr, Honolulu, HI 96822 USA.
EM nlugaz@ifa.hawaii.edu; vourlidas@nrl.navy.mil; iroussev@ifa.hawaii.edu;
hmorgan@ifa.hawaii.edu
RI Vourlidas, Angelos/C-8231-2009; Roussev, Ilia/E-9141-2011; Lugaz,
Noe/C-1284-2008;
OI Vourlidas, Angelos/0000-0002-8164-5948; Lugaz, Noe/0000-0002-1890-6156;
Morgan, Huw/0000-0002-6547-5838
FU NSF [ATM-0639335, ATM-0819653]; NASA [NNX-07AC13G, NNX-08AQ16G]
FX The research for this manuscript was supported by NSF Grant Nos.
ATM-0639335 and ATM-0819653 as well as NASA Grant Nos. NNX-07AC13G and
NNX-08AQ16G. N. L. would also like to acknowledge travel support from
SPS to participate at the European Solar Physics Meeting in Freiburg to
present these results and to thank D. Webb and V. Bothmer for discussion
about these eruptions at the IAU 257 Symposium and EGU meeting,
respectively. The simulation reported here was carried out on a
dedicated cluster of the solar group at the Institute for Astronomy. We
would like to thank the reviewer for helping us to improve and to
clarify this manuscript. SOLIS data were obtained from the NSO Web site.
The SECCHI data are produced by an international consortium of the Naval
Research Laboratory, Lockheed Martin Solar and Astrophysics Laboratory
and NASA Goddard Space Flight Center (USA), Rutherford Appleton
Laboratory and University of Birmingham (UK), Max-Planck-Institut fur
Sonnensystemforschung (Germany), Centre Spatiale de Liege (Belgium), and
Institut d'Optique Theorique et Appliquee and Institut d'Astrophysique
Spatiale (France). SOHO is a project of international cooperation
between ESA and NASA, and the SOHO LASCO/EIT catalogs are maintained by
NASA, the Catholic University of America, and the US Naval Research
Laboratory (NRL).
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PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS
SN 0038-0938
EI 1573-093X
J9 SOL PHYS
JI Sol. Phys.
PD MAY
PY 2009
VL 256
IS 1-2
BP 269
EP 284
DI 10.1007/s11207-009-9339-4
PG 16
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 438OC
UT WOS:000265563900016
ER
PT J
AU Luhmann, JG
Lee, CO
Li, Y
Arge, CN
Galvin, AB
Simunac, K
Russell, CT
Howard, RA
Petrie, G
AF Luhmann, J. G.
Lee, C. O.
Li, Yan
Arge, C. N.
Galvin, A. B.
Simunac, K.
Russell, C. T.
Howard, R. A.
Petrie, G.
TI Solar Wind Sources in the Late Declining Phase of Cycle 23: Effects of
the Weak Solar Polar Field on High Speed Streams
SO SOLAR PHYSICS
LA English
DT Article
DE STEREO mission; Solar wind; Solar cycle; Solar magnetic field; PFSS
model
ID MAGNETIC-FIELD; SUNSPOT-CYCLE; CORONA; PLASMA
AB The declining phases of solar cycles are known for their high speed solar wind streams that dominate the geomagnetic responses during this period. Outstanding questions about these streams, which can provide the fastest winds of the solar cycle, concern their solar origins, persistence, and predictability. The declining phase of cycle 23 has lasted significantly longer than the corresponding phases of the previous two cycles. Solar magnetograph observations suggest that the solar polar magnetic field is also similar to aEuro parts per thousand 2 -aEuro parts per thousand 3 times weaker. The launch of STEREO in late 2006 provided additional incentive to examine the origins of what is observed at 1 AU in the recent cycle, with the OMNI data base at the NSSDC available as an Earth/L1 baseline for comparisons. Here we focus on the year 2007 when the solar corona exhibited large, long-lived mid-to-low latitude coronal holes and polar hole extensions observed by both SOHO and STEREO imagers. STEREO provides in situ measurements consistent with rigidly corotating solar wind stream structure at up to similar to aEuro parts per thousand 45A degrees heliolongitude separation by late 2007. This stability justifies the use of magnetogram-based steady 3D solar wind models to map the observed high speed winds back to their coronal sources. We apply the WSA solar wind model currently running at the NOAA Space Weather Prediction Center with the expectation that it should perform its best at this quiet time. The model comparisons confirm the origins of the observed high speed streams expected from the solar images, but also reveal uncertainties in the solar wind source mapping associated with this cycle's weaker solar polar fields. Overall, the results illustrate the importance of having accurate polar fields in synoptic maps used in solar wind forecast models. At the most fundamental level, they demonstrate the control of the solar polar fields over the high speed wind sources, and thus one specific connection between the solar dynamo and the solar wind character.
C1 [Luhmann, J. G.; Lee, C. O.; Li, Yan] Univ Calif Berkeley, Space Sci Lab, Berkeley, CA 94720 USA.
[Arge, C. N.] AFRL VSBXS, Boston, MA 01731 USA.
[Galvin, A. B.; Simunac, K.] Univ New Hampshire, Ctr Space Sci, Durham, NH 03824 USA.
[Russell, C. T.] Univ Calif Los Angeles, Inst Geophys & Planetary Phys, Los Angeles, CA 90024 USA.
[Howard, R. A.] USN, Res Lab, Solar Phys Branch, Washington, DC 20375 USA.
[Petrie, G.] Natl Solar Observ, Tucson, AZ 85719 USA.
RP Luhmann, JG (reprint author), Univ Calif Berkeley, Space Sci Lab, Berkeley, CA 94720 USA.
EM jgluhman@ssl.berkeley.edu; nick.arge@hanscom.af.mil;
toni.galvin@unh.edu; kristin.simunac@unh.edu; ctrussell@igpp.ucla.edu;
russ.howard@nrl.navy.mil; gpetrie@nso.edu
RI Russell, Christopher/E-7745-2012; Galvin, Antoinette/A-6114-2013;
OI Russell, Christopher/0000-0003-1639-8298; Petrie,
Gordon/0000-0001-8462-9161; Lee, Christina/0000-0002-1604-3326
FU NASA [NAS5-03131]; NSF [ATM-0120950]
FX This work was supported primarily by NASA contract NAS5-03131 to UCB for
the STEREO IMPACT investigation and NSF agreement ATM-0120950 to the
Center for Space Weather Modeling. The work shown here heavily involves
the PLASTIC investigation solar wind ion measurements, provided by the
PI (coauthor A. B. Galvin) and the PLASTIC team. The STEREO images shown
are from SECCHI EUVI investigation and the STEREO Science Center at
GSFC. We are grateful to the other contributing mission PIs and to the
NSSDC and CDAWweb for constructing and providing the OMNI L1 in situ
data set, and to the SOHO mission investigators and ESA for the open
access to SOHO solar images. Finally, the modeling work could not have
been carried out without the availability of ground-based magnetograms
from Mt. Wilson Observatory and NSO GONG, which are jointly sponsored by
the National Science Foundation, NASA and the US Air Force. We thank the
observatories for providing open access to their observations and useful
data products.
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PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS
SN 0038-0938
EI 1573-093X
J9 SOL PHYS
JI Sol. Phys.
PD MAY
PY 2009
VL 256
IS 1-2
BP 285
EP 305
DI 10.1007/s11207-009-9354-5
PG 21
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 438OC
UT WOS:000265563900017
ER
PT J
AU Rouillard, AP
Savani, NP
Davies, JA
Lavraud, B
Forsyth, RJ
Morley, SK
Opitz, A
Sheeley, NR
Burlaga, LF
Sauvaud, JA
Simunac, KDC
Luhmann, JG
Galvin, AB
Crothers, SR
Davis, CJ
Harrison, RA
Lockwood, M
Eyles, CJ
Bewsher, D
Brown, DS
AF Rouillard, A. P.
Savani, N. P.
Davies, J. A.
Lavraud, B.
Forsyth, R. J.
Morley, S. K.
Opitz, A.
Sheeley, N. R.
Burlaga, L. F.
Sauvaud, J. -A.
Simunac, K. D. C.
Luhmann, J. G.
Galvin, A. B.
Crothers, S. R.
Davis, C. J.
Harrison, R. A.
Lockwood, M.
Eyles, C. J.
Bewsher, D.
Brown, D. S.
TI A Multispacecraft Analysis of a Small-Scale Transient Entrained by Solar
Wind Streams
SO SOLAR PHYSICS
LA English
DT Article
DE Sun: magnetic field; Sun: corotating interaction regions; Interplanetary
medium: coronal mass ejection
ID CORONAL MASS EJECTIONS; MAGNETIC CLOUDS; HOLES; INTERFACES; EXPLORER;
SECCHI; CYCLE; EARTH; FIELD
AB The images taken by the Heliospheric Imagers (HIs), part of the SECCHI imaging package onboard the pair of STEREO spacecraft, provide information on the radial and latitudinal evolution of the plasma compressed inside corotating interaction regions (CIRs). A plasma density wave imaged by the HI instrument onboard STEREO-B was found to propagate towards STEREO-A, enabling a comparison between simultaneous remote-sensing and in situ observations of its structure to be performed. In situ measurements made by STEREO-A show that the plasma density wave is associated with the passage of a CIR. The magnetic field compressed after the CIR stream interface (SI) is found to have a planar distribution. Minimum variance analysis of the magnetic field vectors shows that the SI is inclined at 54A degrees to the orbital plane of the STEREO-A spacecraft. This inclination of the CIR SI is comparable to the inclination of the associated plasma density wave observed by HI. A small-scale magnetic cloud with a flux rope topology and radial extent of 0.08 AU is also embedded prior to the SI. The pitch-angle distribution of suprathermal electrons measured by the STEREO-A SWEA instrument shows that an open magnetic field topology in the cloud replaced the heliospheric current sheet locally. These observations confirm that HI observes CIRs in difference images when a small-scale transient is caught up in the compression region.
C1 [Rouillard, A. P.; Lockwood, M.] Univ Southampton, Sch Phys & Astron, Space Environm Phys Grp, Southampton SO17 1BJ, Hants, England.
[Rouillard, A. P.; Davies, J. A.; Crothers, S. R.; Davis, C. J.; Harrison, R. A.; Lockwood, M.; Eyles, C. J.; Bewsher, D.] Rutherford Appleton Lab, Space Sci & Technol Dept, Chilton OX11 0QX, Oxon, England.
[Savani, N. P.; Forsyth, R. J.] Univ London Imperial Coll Sci Technol & Med, Blackett Lab, London SW7 2BW, England.
[Lavraud, B.; Opitz, A.; Sauvaud, J. -A.] Univ Toulouse UPS, Ctr Etud Spatiale Rayonnements, Toulouse, France.
[Lavraud, B.; Opitz, A.; Sauvaud, J. -A.] CNRS, UMR 5187, Toulouse, France.
[Morley, S. K.] Univ Newcastle, Ctr Space Phys, Newcastle, NSW 2308, Australia.
[Sheeley, N. R.] USN, Res Lab, Div Space Sci, Washington, DC 20375 USA.
[Burlaga, L. F.] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA.
[Simunac, K. D. C.; Galvin, A. B.] Univ New Hampshire, Inst Study Earth Oceans & Space, Durham, NH 03824 USA.
[Luhmann, J. G.] Univ Calif Berkeley, Space Sci Lab, Berkeley, CA 94720 USA.
[Eyles, C. J.] Univ Valencia, Grp Astron & Ciencias Espacio, Valencia, Spain.
[Bewsher, D.; Brown, D. S.] Aberystwyth Univ, Inst Math & Phys Sci, Aberystwyth SY23 3BZ, Dyfed, Wales.
RP Rouillard, AP (reprint author), Univ Southampton, Sch Phys & Astron, Space Environm Phys Grp, Southampton SO17 1BJ, Hants, England.
EM alexisrouillard@yahoo.co.uk
RI Morley, Steven/A-8321-2008; Lockwood, Mike/G-1030-2011; Galvin,
Antoinette/A-6114-2013; Savani, Neel/G-4066-2014; Scott,
Christopher/H-8664-2012;
OI Bewsher, Danielle/0000-0002-6351-5170; Morley,
Steven/0000-0001-8520-0199; Lockwood, Mike/0000-0002-7397-2172; Savani,
Neel/0000-0002-1916-7877; Scott, Christopher/0000-0001-6411-5649; Brown,
Daniel/0000-0002-1618-8816
FU STFC (UK)
FX This work was funded by STFC (UK). The STEREO/SECCHI data are produced
by a consortium of RAL (UK), NRL (USA), LMSAL (USA), GSFC (USA), MPS
(Germany), CSL (Belgium), IOTA (France) and IAS (France). The PLASTIC
and IMPACT data are produced by a consortium of the CESR (France), the
University of New Hampshire and the University of California.
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PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS
SN 0038-0938
EI 1573-093X
J9 SOL PHYS
JI Sol. Phys.
PD MAY
PY 2009
VL 256
IS 1-2
BP 307
EP 326
DI 10.1007/s11207-009-9329-6
PG 20
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 438OC
UT WOS:000265563900018
ER
PT J
AU St Cyr, OC
Kaiser, ML
Meyer-Vernet, N
Howard, RA
Harrison, RA
Bale, SD
Thompson, WT
Goetz, K
Maksimovic, M
Bougeret, JL
Wang, D
Crothers, S
AF St Cyr, O. C.
Kaiser, M. L.
Meyer-Vernet, N.
Howard, R. A.
Harrison, R. A.
Bale, S. D.
Thompson, W. T.
Goetz, K.
Maksimovic, M.
Bougeret, J. -L.
Wang, D.
Crothers, S.
TI STEREO SECCHI and S/WAVES Observations of Spacecraft Debris Caused by
Micron-Size Interplanetary Dust Impacts
SO SOLAR PHYSICS
LA English
DT Article
ID MISSION; LASCO
AB Early in the STEREO mission observers noted that the white-light instruments of the SECCHI suite were detecting significantly more spacecraft-related "debris" than any previously flown coronagraphic instruments. Comparison of SECCHI "debris storms" with S/WAVES indicates that almost all are coincident with the most intense transient emissions observed by the radio and plasma waves instrument. We believe the debris is endogenous (i.e., from the spacecraft thermal blanketing), and the storms appear to be caused by impacts of large interplanetary dust grains that are detected by S/WAVES. Here we report the observations, compare them to interplanetary dust distributions, and document a reminder for future spacebased coronagraphic instrument builders.
C1 [St Cyr, O. C.; Kaiser, M. L.; Thompson, W. T.] NASA, Goddard Space Flight Ctr, Greenbelt, MD USA.
[Meyer-Vernet, N.; Maksimovic, M.; Bougeret, J. -L.] Univ Paris Diderot, Observ Paris, UPMC, LESIA,CNRS, F-92190 Meudon, France.
[Howard, R. A.; Wang, D.] Naval Res Lab, Washington, DC USA.
[Harrison, R. A.; Crothers, S.] Rutherford Appleton Lab, Didcot OX11 0QX, Oxon, England.
[Bale, S. D.] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
[Thompson, W. T.] Adnet Syst Inc, Rockville, MD USA.
[Goetz, K.] Univ Minnesota, Sch Phys & Astron, Minneapolis, MN 55455 USA.
[Wang, D.] Interferometrics, Herndon, VA USA.
[Bale, S. D.] Univ Calif Berkeley, Space Sci Lab, Berkeley, CA 94720 USA.
RP St Cyr, OC (reprint author), NASA, Goddard Space Flight Ctr, Greenbelt, MD USA.
EM chris.stcyr@nasa.gov
RI Bale, Stuart/E-7533-2011; Thompson, William/D-7376-2012
OI Bale, Stuart/0000-0002-1989-3596;
FU NASA; Particle Physics and Astronomy Research Council; Deutsches Zentrum
fur Luft- und Raumfahrt e.V.; Belgian Science Policy Office; Centre
National d'Etudes Spatiales; Centre National de la Recherche
Scientifique; USAF Space Test Program; Office of Naval Research; CNRS
FX The SECCHI data used here are produced by an international consortium of
the Naval Research Laboratory, Lockheed Martin Solar and Astrophysics
Laboratory, and NASA Goddard Space Flight Center (USA), Rutherford
Appleton Laboratory and University of Birmingham (UK),
Max-Planck-Institut fur Sonnensystemforschung (Germany), Centre Spatiale
de Liege (Belgium), Institut d'Optique Theorique et Appliquee, and
Institut d'Astrophysique Spatiale (France). The USA institutions were
funded by NASA; the UK institutions by Particle Physics and Astronomy
Research Council; the German institutions by Deutsches Zentrum fur Luft-
und Raumfahrt e. V.; the Belgian institutions by Belgian Science Policy
Office; the French institutions by Centre National d'Etudes Spatiales
and the Centre National de la Recherche Scientifique. The NRL effort was
also supported by the USAF Space Test Program and the Office of Naval
Research. The S/WAVES data used here are produced by an international
consortium of the Observatoire de Paris (France), the University of
Minnesota (USA), the University of California Berkeley (USA), and NASA
Goddard Space Flight Center (USA). The French contribution was funded by
CNRS, and the USA institutions were funded by NASA. We also gratefully
acknowledge contributions from K. Baldwin (NRL), J.-P. Olive (ESA), A.
Dreisman (JHU/APL), and C. Edgerton (Edge Space Systems).
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SN 0038-0938
J9 SOL PHYS
JI Sol. Phys.
PD MAY
PY 2009
VL 256
IS 1-2
BP 475
EP 488
DI 10.1007/s11207-009-9362-5
PG 14
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 438OC
UT WOS:000265563900028
ER
PT J
AU Sarvis, JA
Auge, BK
AF Sarvis, Jamey A.
Auge, Brian K.
TI Myeloid (Granulocytic) Sarcoma of Epididymis as Rare Manifestation of
Recurrent Acute Myelogenous Leukemia
SO UROLOGY
LA English
DT Article
ID DIAGNOSIS
AB Myeloid sarcoma involving the genitourinary system is a rare complication associated with acute myelogenous leukemia or other myeloproliferative disorders. The diagnosis is made by pathologic findings of diffuse infiltration of intermediate,size neoplastic cells and fibrosis of the affected organ. Immunohistochemically, the cells stain positive for myeloperoxidase, CD45, and CD117 but negative for CD34. Treatment involves local surgical extirpation, radiotherapy, and chemotherapy. We report the second known case of myeloid sarcoma involving the epididymis in a patient with a history of acute myelogenous leukemia. UROLOGY 73: 1163.e1-1163.e3, 2009, Published by Elsevier Inc.
C1 [Auge, Brian K.] USN, San Diego Med Ctr, Dept Urol, Uniformed Serv Univ Hlth Sci,Dept Surg, San Diego, CA 92134 USA.
RP Auge, BK (reprint author), USN, San Diego Med Ctr, Dept Urol, Uniformed Serv Univ Hlth Sci,Dept Surg, 34800 Bob Wilson Dr,Bldg 3,Suite 200, San Diego, CA 92134 USA.
EM brian.auge@med.navy.mil
NR 15
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PU ELSEVIER SCIENCE INC
PI NEW YORK
PA 360 PARK AVE SOUTH, NEW YORK, NY 10010-1710 USA
SN 0090-4295
J9 UROLOGY
JI Urology
PD MAY
PY 2009
VL 73
IS 5
AR 1163.e1
DI 10.1016/j.urology.2008.04.016
PG 3
WC Urology & Nephrology
SC Urology & Nephrology
GA 443PU
UT WOS:000265923100063
PM 18602141
ER
PT J
AU Preusse, P
Eckermann, SD
Ern, M
Oberheide, J
Picard, RH
Roble, RG
Riese, M
Russell, JM
Mlynczak, MG
AF Preusse, Peter
Eckermann, Stephen D.
Ern, Manfred
Oberheide, Jens
Picard, Richard H.
Roble, Raymond G.
Riese, Martin
Russell, James M., III
Mlynczak, Martin G.
TI Global ray tracing simulations of the SABER gravity wave climatology
SO JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
LA English
DT Article
ID CRYOGENIC INFRARED SPECTROMETERS; ATMOSPHERE RESEARCH SATELLITE;
STRATOSPHERIC MOUNTAIN WAVES; GENERAL-CIRCULATION MODELS; GPS
OCCULTATION DATA; MIDDLE ATMOSPHERE; SPECTRAL PARAMETERIZATION;
LATITUDINAL VARIATIONS; MOMENTUM DEPOSITION; CRISTA TEMPERATURES
AB Since February 2002, the SABER (sounding of the atmosphere using broadband emission radiometry) satellite instrument has measured temperatures throughout the entire middle atmosphere. Employing the same techniques as previously used for CRISTA (cryogenic infrared spectrometers and telescopes for the atmosphere), we deduce from SABER V1.06 data 5 years of gravity wave (GW) temperature variances from altitudes of 20 to 100 km. A typical annual cycle is presented by calculating averages for the individual calendar months. Findings are consistent with previous results from various satellite missions. Based on zonal mean, SABER data for July and zonal mean GW momentum flux from CRISTA, a homogeneous and isotropic launch distribution for the GROGRAT (gravity wave regional or global ray tracer) is tuned. The launch distribution contains different phase speed mesoscale waves, some of very high-phase speed and extremely low amplitudes, as well as waves with horizontal wavelengths of several thousand kilometers. Global maps for different seasons and altitudes, as well as time series of zonal mean GW squared amplitudes based on this launch distribution, match the observations well. Based on this realistic observation-tuned model run, we calculate quantities that cannot be measured directly and are speculated to be major sources of uncertainty in current GW parameterization schemes. Two examples presented in this paper are the average cross-latitude propagation of GWs and the relative acceleration contributions provided by saturation and dissipation, on the one hand, and the horizontal refraction of GWs by horizontal gradients of the mean flow, on the other hand.
C1 [Preusse, Peter; Ern, Manfred; Riese, Martin] Forschungszentrum Julich, Inst Chem & Dynam Geosphere, Res Ctr Juelich,ICG Stratosphere 1, D-52425 Julich, Germany.
[Eckermann, Stephen D.] USN, Res Lab, Div Space Sci, Washington, DC 20375 USA.
[Oberheide, Jens] Berg Univ Wuppertal, Dept Phys, D-42097 Wuppertal, Germany.
[Picard, Richard H.] USAF, Res Lab, RVBYM, Hanscom AFB, MA 01731 USA.
[Roble, Raymond G.] Natl Ctr Atmospher Res, High Altitude Observ, Boulder, CO 80307 USA.
[Russell, James M., III] Hampton Univ, Ctr Atmospher Sci, Hampton, VA 23668 USA.
[Mlynczak, Martin G.] NASA, Langley Res Ctr, Hampton, VA 23681 USA.
RP Preusse, P (reprint author), Forschungszentrum Julich, Inst Chem & Dynam Geosphere, Res Ctr Juelich,ICG Stratosphere 1, Postfach 1913, D-52425 Julich, Germany.
EM p.preusse@fz-juelich.de; stephen.eckermann@nrl.navy.mil
RI Oberheide, Jens/C-6156-2011; Mlynczak, Martin/K-3396-2012; Preusse,
Peter/A-1193-2013; Riese, Martin/A-3927-2013; Ern, Manfred/I-8839-2016
OI Oberheide, Jens/0000-0001-6721-2540; Preusse, Peter/0000-0002-8997-4965;
Riese, Martin/0000-0001-6398-6493; Ern, Manfred/0000-0002-8565-2125
FU DFG CAWSES [OB 299/2-2, ER 474/1-1]; NASA SABER Program Office; U.S. Air
Force Office of Scientific Research
FX Jens Oberheide is supported by DFG CAWSES grant OB 299/2-2. Part of the
work of Manfred Ern was supported by DFG CAWSES grant ER 474/1-1.
Richard H. Picard acknowledges support from NASA SABER Program Office
and Dr. Kent Miller of U.S. Air Force Office of Scientific Research. We
thank three anonymous reviewers for their helpful comments on the
determination of the intermittency factors, discussions, and data
presentation.
NR 87
TC 54
Z9 54
U1 4
U2 14
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 30
PY 2009
VL 114
AR D08126
DI 10.1029/2008JD011214
PG 25
WC Meteorology & Atmospheric Sciences
SC Meteorology & Atmospheric Sciences
GA 439ZN
UT WOS:000265667300006
ER
PT J
AU Qadri, SB
Keller, TM
Laskoski, M
Skelton, EF
Husz, A
Mahadik, NA
AF Qadri, Syed B.
Keller, Teddy M.
Laskoski, Matt
Skelton, E. F.
Husz, A.
Mahadik, N. A.
TI Thermal expansion of RuFe alloys and its relationship to the high
pressure phase of Fe
SO APPLIED PHYSICS LETTERS
LA English
DT Article
DE high-pressure effects; high-temperature effects; iron alloys; ruthenium
alloys; space groups; thermal expansion; thermoelasticity; X-ray
diffraction
ID MAGNETIC-PROPERTIES; METAL MULTILAYERS; HCP IRON; TEMPERATURE;
COMPRESSION; TRANSITION; RUTHENIUM; CORE; GPA
AB Ru(1-x)Fe(x) alloys crystallize in a hexagonal-close-packed structure for x < 0.70 with a space group of P63/mmc, the same phase as that of a high pressure phase of iron, epsilon-Fe. Thermal expansion coefficients of Ru(1-x)Fe(x) alloys of various compositions were determined over a temperature range of 300-530 K using high resolution x-ray diffraction measurements. The coefficients of linear thermal expansion for hexagonal phase along the c and a axes showed a linear dependence on the composition. These results when extrapolated showed direct relationship to the thermoelastic properties of epsilon-Fe. This study also demonstrates that high pressure and high temperature phases can be simulated and engineered to exist at ambient conditions with proper choice of alloying.
C1 [Qadri, Syed B.] USN, Res Lab, Div Mat Sci & Technol, Washington, DC 20375 USA.
[Keller, Teddy M.; Laskoski, Matt] USN, Res Lab, Div Chem, Washington, DC 20375 USA.
[Skelton, E. F.] Georgetown Univ, Dept Phys, Washington, DC 20057 USA.
[Husz, A.; Mahadik, N. A.] George Mason Univ, Fairfax, VA 22030 USA.
RP Qadri, SB (reprint author), USN, Res Lab, Div Mat Sci & Technol, Washington, DC 20375 USA.
EM syed.qadri@nrl.navy.mil
RI Mahadik, Nadeemullah/C-8551-2009
NR 21
TC 1
Z9 1
U1 0
U2 4
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 27
PY 2009
VL 94
IS 17
AR 171907
DI 10.1063/1.3126959
PG 3
WC Physics, Applied
SC Physics
GA 440ZP
UT WOS:000265738700026
ER
PT J
AU Wu, J
Li, ZH
Shao, DL
Manasreh, MO
Kunets, VP
Wang, ZMM
Salamo, GJ
Weaver, BD
AF Wu, Jiang
Li, Zhenhua
Shao, Dali
Manasreh, M. O.
Kunets, Vasyl P.
Wang, Zhiming M.
Salamo, Gregory J.
Weaver, B. D.
TI Multicolor photodetector based on GaAs quantum rings grown by droplet
epitaxy
SO APPLIED PHYSICS LETTERS
LA English
DT Article
DE gallium arsenide; III-V semiconductors; photodetectors
ID WELL INFRARED PHOTODETECTORS; TEMPERATURE OPERATION; DOTS;
PHOTORESPONSE; DETECTORS; INGAAS
AB Photoresponse from multicolor photodetector was measured in the spectral range of 0.4-6.0 mu m as a function of temperature and bias voltage. Devices were fabricated from wafers with an active region of five periods of GaAs quantum rings grown by droplet epitaxy technique on lattice matched Al(0.3)Ga(0.7)As barriers. The photoresponse spectra exhibit two broad bands in the visible-near-infrared and midinfrared spectral regions. The visible-near-infrared band, which is due to interband transitions, was observed at temperatures as high as room temperature. On the other hand, the midinfrared band, which is due to intersubband transitions, was observed at temperature lower than 80 K.
C1 [Wu, Jiang; Shao, Dali; Manasreh, M. O.] Univ Arkansas, Dept Elect Engn, Fayetteville, AR 72701 USA.
[Li, Zhenhua; Manasreh, M. O.; Kunets, Vasyl P.; Wang, Zhiming M.; Salamo, Gregory J.] Inst Nanoscale Sci & Engn, Fayetteville, AR 72701 USA.
[Weaver, B. D.] USN, Res Lab, Washington, DC 20375 USA.
RP Wu, J (reprint author), Univ Arkansas, Dept Elect Engn, Fayetteville, AR 72701 USA.
EM manasreh@uark.edu
RI Wang, Zhiming/B-6320-2009; Shao, Dali/J-5870-2014; Wang,
Zhiming/Q-1031-2015; Li, Alvason Zhenhua/M-8380-2015;
OI Li, Alvason Zhenhua/0000-0001-6889-3288; Shao, Dali/0000-0002-8155-8115
FU Air Force Office of Scientific Research DEPSCoR [FA9550-06-1-0457];
Arkansas Science and Technology Authority [AR/ASTA/07-ARMF-02]; NSF
MRSEC
FX This work was funded by the Air Force Office of Scientific Research
DEPSCoR Grant No. FA9550-06-1-0457, the Arkansas Science and Technology
Authority Grant No. AR/ASTA/07-ARMF-02, and a NSF MRSEC grant.
NR 21
TC 43
Z9 45
U1 0
U2 5
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 27
PY 2009
VL 94
IS 17
AR 171102
DI 10.1063/1.3126644
PG 3
WC Physics, Applied
SC Physics
GA 440ZP
UT WOS:000265738700002
ER
PT J
AU Gorbach, AM
Leeser, DB
Wang, HL
Tadaki, DK
Fernandez, C
DeStephano, D
Hale, D
Kirk, AD
Gage, FA
Elster, EA
AF Gorbach, Alexander M.
Leeser, David B.
Wang, Hengliang
Tadaki, Douglas K.
Fernandez, Carlos
DeStephano, David
Hale, Douglas
Kirk, Allan D.
Gage, Fred A.
Elster, Eric A.
TI Assessment of Cadaveric Organ Viability During Pulsatile Perfusion Using
Infrared Imaging
SO TRANSPLANTATION
LA English
DT Article
DE Infrared imaging; Pulsatile perfusion; Viability
ID MACHINE PERFUSION; PRESERVATION; KIDNEYS
AB Assessment of pulsatile perfusion (PP) is limited to measurements of flow (V) and resistance (R). We investigated infrared (IR) imaging during PP as a means for precise organ assessment. IR was used to monitor 10 porcine kidneys during 18 hr of PP in an uncontrolled Donation after Cardiac Death model. An IR camera (Lockheed Martin) was focused on the anterior surfaces of the kidneys. The degree of temperature homogeneity was compared with standard measurements of V and R. IR thermal images correlated with V and R (R=0.92, P<0.001). IR detected an increase in homogeneity during PP by comparing standard deviation differences before and after PP (P=0.002), which was not evident by standard measurements of V and R. Finally, IR assessment allowed for measurement of dynamic changes in perfusion.
C1 [Elster, Eric A.] USN, Med Res Ctr, Regenerat Med Dept, Silver Spring, MD 20910 USA.
[Elster, Eric A.] Natl Naval Med Ctr, Dept Surg, Bethesda, MD USA.
[Kirk, Allan D.] Emory Univ Hosp, Emory Transplant Ctr, Atlanta, GA 30322 USA.
[Hale, Douglas] Univ Florida, Med Ctr, Div Transplantat, Jacksonville, FL 32209 USA.
[Fernandez, Carlos; DeStephano, David] Washington Reg Transplant Consortium, Fairfax, VA USA.
[Tadaki, Douglas K.; Elster, Eric A.] Uniformed Serv Univ Hlth Sci, Dept Surg, Bethesda, MD 20814 USA.
[Leeser, David B.] New York Presbyterian Hosp, Weill Cornell Med Ctr, Weill Cornell Med Coll, Dept Surg, New York, NY USA.
[Gorbach, Alexander M.] Natl Inst Biomed Imaging & Bioengn, NIH, Bethesda, MD USA.
RP Elster, EA (reprint author), USN, Med Res Ctr, Regenerat Med Dept, Silver Spring, MD 20910 USA.
EM eric.elster@med.navy.mil
RI Kirk, Allan/B-6905-2012
FU National Institute of Diabetes and Digestive and Kidney Diseases;
National Institute of Biomedical Imaging and Bioengineering; National
Institutes of Health [602227D.0483.01.A0518]
FX This research was supported in part by the intramural research program
of the National Institute of Diabetes and Digestive and Kidney Diseases,
and the National Institute of Biomedical Imaging and Bioengineering,
National Institutes of Health. In addition, this work was supported by
work unit number: 602227D.0483.01.A0518 (MFEL).
NR 7
TC 4
Z9 4
U1 2
U2 4
PU LIPPINCOTT WILLIAMS & WILKINS
PI PHILADELPHIA
PA 530 WALNUT ST, PHILADELPHIA, PA 19106-3621 USA
SN 0041-1337
J9 TRANSPLANTATION
JI Transplantation
PD APR 27
PY 2009
VL 87
IS 8
BP 1163
EP 1166
DI 10.1097/TP.0b013e31819e3e02
PG 4
WC Immunology; Surgery; Transplantation
SC Immunology; Surgery; Transplantation
GA 437BU
UT WOS:000265461600010
PM 19384162
ER
PT J
AU Small, RJ
Richards, KJ
Xie, SP
Dutrieux, P
Miyama, T
AF Small, R. Justin
Richards, Kelvin J.
Xie, Shang-Ping
Dutrieux, Pierre
Miyama, Toru
TI Damping of Tropical Instability Waves caused by the action of surface
currents on stress
SO JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
LA English
DT Article
ID EASTERN EQUATORIAL PACIFIC; ATMOSPHERIC BOUNDARY-LAYER; SEA-SURFACE;
SATELLITE MEASUREMENTS; WIND STRESS; OCEAN CIRCULATION; NUMERICAL-MODEL;
ATLANTIC-OCEAN; PART I; TEMPERATURE
AB Ocean eddies and fronts affect surface stress via two mechanisms: (1) ocean surface currents altering the relative motion between air and sea and, hence, the stress fields and (2) ocean sea surface temperature (SST) gradients forcing changes in stability and near-surface winds. In this paper, we quantify the first effect and how it impacts Tropical Instability Waves (TIW) in the eastern Pacific. High-resolution satellite data and a regional coupled model are used to distinguish between stress changes due to the surface currents and those due to the changes in stability and near-surface winds. It is found that both mechanisms affect the surface stress curl, but they do so at different latitudes, allowing for their effect on Ekman pumping to be distinguished. The Ekman pumping due to the surface current effect alone, leads to significant damping of the TIWs. In terms of the eddy kinetic energy, the inclusion of surface current in the stress leads to decay with an e-folding time comparable with the period of the TIWs. It is, thus, an important damping mechanism to be included in ocean and coupled ocean-atmosphere models.
C1 [Small, R. Justin; Richards, Kelvin J.; Xie, Shang-Ping] Univ Hawaii, Int Pacific Res Ctr, Honolulu, HI 96822 USA.
[Small, R. Justin] USN, Res Lab, Stennis Space Ctr, MS 39529 USA.
[Richards, Kelvin J.; Dutrieux, Pierre] Univ Hawaii, Sch Ocean & Earth Sci & Technol, Dept Oceanog, Honolulu, HI 96822 USA.
[Xie, Shang-Ping] Univ Hawaii, Sch Ocean & Earth Sci & Technol, Dept Meteorol, Honolulu, HI 96822 USA.
[Miyama, Toru] Japan Agcy Marine Earth Sci & Technol, Frontier Res Global Change, Kanazawa Ku, Kanagawa 2360001, Japan.
RP Small, RJ (reprint author), Univ Hawaii, Int Pacific Res Ctr, Post 401,1680 East West Rd, Honolulu, HI 96822 USA.
EM small.ctr.uk@nrlssc.navy.mil
RI Xie, Shang-Ping/C-1254-2009; Dutrieux, Pierre/B-7568-2012; Miyama,
Toru/A-3824-2009
OI Xie, Shang-Ping/0000-0002-3676-1325; Dutrieux,
Pierre/0000-0002-8066-934X; Miyama, Toru/0000-0002-6400-0312
FU NASA [NAG-10045]; JPL [1216010]; Japan Agency for Marine-Earth Science
and Technology (JAMSTEC); Japan Ministry of Education, Culture, Science
and Technology
FX Hyodae Seo and Markus Jochum are thanked for useful discussions. We are
grateful for the comments of two anonymous reviewers who improved the
paper. S.- P. X., K. R., and R. J. S. were supported by NASA grant
NAG-10045 and JPL contract 1216010, and the Japan Agency for
Marine-Earth Science and Technology (JAMSTEC) through its sponsorship of
the International Pacific Research Center. S.- P. X. and R. J. S. were
also supported by Japan Ministry of Education, Culture, Science and
Technology through the Kyosei-7 Project. IPRC contribution 605 and SOEST
contribution 7673.
NR 63
TC 13
Z9 13
U1 0
U2 2
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 2169-9275
J9 J GEOPHYS RES-OCEANS
JI J. Geophys. Res.-Oceans
PD APR 25
PY 2009
VL 114
AR C04009
DI 10.1029/2008JC005147
PG 17
WC Oceanography
SC Oceanography
GA 438DX
UT WOS:000265537200010
ER
PT J
AU Veneziani, M
Edwards, CA
Doyle, JD
Foley, D
AF Veneziani, M.
Edwards, C. A.
Doyle, J. D.
Foley, D.
TI A central California coastal ocean modeling study: 1. Forward model and
the influence of realistic versus climatological forcing
SO JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
LA English
DT Article
ID WIND STRESS CURL; CURRENT SYSTEM; SURFACE CIRCULATION; NORTHERN
CALIFORNIA; DYNAMICS EXPERIMENT; BULK PARAMETERIZATION;
PRESSURE-GRADIENT; SHELF CIRCULATION; DATA ASSIMILATION; UPWELLING JET
AB We report on a numerical simulation of the California Current circulation using the Regional Ocean Modeling System model, focusing on the region of northern and central California during the 5-year period from 2000 to 2004. Unlike previous model studies of the California Current System, the present configuration is characterized by both realistic external forcing and a spatial domain covering most of the North American West Coast. Specifically, this configuration is driven at the surface by high-resolution meteorological fields from the Coupled Ocean-Atmosphere Mesoscale Prediction System and at the lateral open boundaries by output from the project Estimating the Circulation and Climate of the Ocean supported by the Global Ocean Data Assimilation Experiment. The simulation is evaluated favorably through quantitative comparisons with the California Cooperative Fisheries Investigations data set, satellite-derived sea surface temperature, and surface drifters-derived eddy kinetic energy. The impact of adopting realistic versus climatological surface forcing is demonstrated by comparing mean and mesoscale circulation characteristics. Realistic surface forcing qualitatively alters the seasonal cycle of the mean along shore jet and better reproduces the summer spatial structure and intensity of the eddy kinetic energy field along the central California coast.
C1 [Veneziani, M.; Edwards, C. A.] Univ Calif Santa Cruz, Ocean Sci Dept, Santa Cruz, CA 95064 USA.
[Doyle, J. D.] USN, Res Lab, Monterey, CA 93943 USA.
[Foley, D.] NOAA, Div Environm Res, SW Fisheries Sci Ctr, Pacific Grove, CA 93950 USA.
RP Veneziani, M (reprint author), Univ Calif Santa Cruz, Ocean Sci Dept, Santa Cruz, CA 95064 USA.
EM milena@ucsc.edu
FU National Oceanographic Partnership Program (NOPP); NOPP [NA05NOS4731242]
FX The authors wish to thank Patrick Heimbach for his helpful comments on
the paper and Gregoire Broquet and Enrique Curchitser for useful
scientific discussions. The ECCO-GODAE data was provided by the ECCO
Consortium for Estimating the Circulation and Climate of the Ocean
funded by the National Oceanographic Partnership Program (NOPP). This
research was funded by NOPP project NA05NOS4731242.
NR 72
TC 32
Z9 32
U1 1
U2 3
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 2169-9275
J9 J GEOPHYS RES-OCEANS
JI J. Geophys. Res.-Oceans
PD APR 25
PY 2009
VL 114
AR C04015
DI 10.1029/2008JC004774
PG 16
WC Oceanography
SC Oceanography
GA 438DX
UT WOS:000265537200002
ER
PT J
AU Suess, ST
Ko, YK
von Steiger, R
Moore, RL
AF Suess, S. T.
Ko, Y. -K.
von Steiger, R.
Moore, R. L.
TI Quiescent current sheets in the solar wind and origins of slow wind
SO JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
LA English
DT Article
ID CORONAL MASS EJECTION; HELIOSPHERIC CURRENT SHEET; PHYSICAL-PROPERTIES;
HELIUM ABUNDANCE; STREAMER BOUNDARIES; FLOW; EVOLUTION; SPEEDS; FLARES;
AU
AB Solar wind near the heliospheric current sheet is investigated using Ulysses and ACE data in a superposed epoch analysis for several days on either side of the current sheets. Only data near sunspot minima are used, minimizing the influence of transients. New results are shown for composition and ionization state. Existing results showing a similar to 2 day wide depletion in He/H (He(++)/H(+)) at the current sheet are confirmed, although the depletion is generally more narrow. A recent finding of a broad 5-10 day wide reduction in He/H around the current sheet is also confirmed. An important result is that the narrow depletion is not a real phenomenon but is instead a statistical consequence of the superposition of transient depletions that also create the broad reduction in the averages. These transient depletions last from a few hours up to several days, come from the core of streamers, and are embedded in a quasi-steady flow from streamers' legs. Most depletions contain a current sheet just inside one edge, leading to the apparent narrow depletion at the current sheet in the superposed epoch analysis. These results lead us to a hypothesis for how the He/H depletions form with a current sheet just inside one edge. Fe/O fluctuations associated with the He/H fluctuations further show that mixing of plasma from coronal holes adjacent to streamer brightness boundaries into outflow inside the brightness boundary is not an important process.
C1 [Suess, S. T.] NASA, George C Marshall Space Flight Ctr, Natl Space Sci & Technol Ctr, Huntsville, AL 35812 USA.
[Ko, Y. -K.] USN, Res Lab, Washington, DC 20375 USA.
[von Steiger, R.] Int Space Sci Inst, Bern, Switzerland.
RP Suess, ST (reprint author), NASA, George C Marshall Space Flight Ctr, Natl Space Sci & Technol Ctr, Mail Code VP62, Huntsville, AL 35812 USA.
EM stevesuess@bellsouth.net; yko@ssd5.nrl.navy.mil; vsteiger@issibern.ch;
ronald.1.moore@nasa.gov
RI Von Steiger, Rudolf/F-6822-2011
OI Von Steiger, Rudolf/0000-0002-3350-0023
FU ONR; NASA [NNX07AL72G]
FX We would like to thank the International Space Science Institute, Bern,
Switzerland, for the hospitality provided to our team studying the Role
of Current Sheets in Solar Eruptive Phenomena, where many of the ideas
presented in this work have been discussed. S. T. S. thanks the
Ulysses/SWOOPS instrument team for its long support of his research and
the Osservatorio Astrofisico di Arcetri for its hospitality while much
of this paper was being written. Y. K. K. acknowledges the support by
ONR and NASA grant NNX07AL72G.
NR 38
TC 26
Z9 26
U1 0
U2 1
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 0148-0227
J9 J GEOPHYS RES-SPACE
JI J. Geophys. Res-Space Phys.
PD APR 24
PY 2009
VL 114
AR A04103
DI 10.1029/2008JA013704
PG 18
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 438EQ
UT WOS:000265539100002
ER
PT J
AU Carter, SG
Shabaev, A
Economou, SE
Kennedy, TA
Bracker, AS
Reinecke, TL
AF Carter, S. G.
Shabaev, A.
Economou, Sophia E.
Kennedy, T. A.
Bracker, A. S.
Reinecke, T. L.
TI Directing Nuclear Spin Flips in InAs Quantum Dots Using Detuned Optical
Pulse Trains
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID ELECTRON-SPIN; STATE PREPARATION; MANIPULATION
AB We find that detuning an optical pulse train from electronic transitions in quantum dots controls the direction of nuclear spin flips. The optical pulse train generates electron spins that precess about an applied magnetic field, with a spin component parallel to the field only for detuned pulses. This component leads to asymmetry in the nuclear spin flips, providing a way to stabilize and control the nuclear spin polarization. This effect is observed using two-color, time-resolved Faraday rotation and ellipticity.
C1 [Carter, S. G.; Economou, Sophia E.; Kennedy, T. A.; Bracker, A. S.; Reinecke, T. L.] USN, Res Lab, Washington, DC 20375 USA.
[Shabaev, A.] George Mason Univ, Sch Computat Sci, Fairfax, VA 22030 USA.
RP Carter, SG (reprint author), USN, Res Lab, Washington, DC 20375 USA.
RI Carter, Sam/G-4589-2012
FU U. S. Office of Naval Research; NRC/NRL
FX This work is supported by the U. S. Office of Naval Research. S. E. E.
received additional support from the NRC/NRL.
NR 36
TC 32
Z9 32
U1 0
U2 3
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 2009
VL 102
IS 16
AR 167403
DI 10.1103/PhysRevLett.102.167403
PG 4
WC Physics, Multidisciplinary
SC Physics
GA 437IC
UT WOS:000265479300070
PM 19518754
ER
PT J
AU Pearson, JD
Zikry, MA
Wahl, KJ
AF Pearson, James D.
Zikry, Mohammed A.
Wahl, Kathryn J.
TI Microstructural modeling of adaptive nanocomposite coatings for
durability and wear
SO WEAR
LA English
DT Article
DE Solid lubrication; Finite-element modeling; Sliding wear; Nanocomposite
coating; Thin-film; Transfer film
ID CHAMELEON SURFACE ADAPTATION; AMORPHOUS-CARBON COATINGS;
FRACTURE-TOUGHNESS; SLIDING WEAR; HARD COATINGS; MOS2 COATINGS;
ULTRA-THIN; ELEMENT; BEHAVIOR; FILMS
AB Adaptive thin-film nanocomposite coatings comprised of crystalline ductile phases of gold and molybdenum disulfide, and brittle phases of diamond like carbon (DLC) and ytrria stabilized zirconia (YSZ) have been investigated by specialized microstructurally based finite-element techniques. One of the major objectives is to determine optimal crystalline and amorphous compositions and behavior related to wear and durability over a wide range of thermo-mechanical conditions. The interrelated effects of microstructural characteristics such as grain shapes and sizes, local material behavior due to interfacial stresses and strains, varying amorphous and crystalline compositions, and transfer film adhesion on coating behavior have been studied. The computational predictions, consistent with experimental observations, indicate specific interfacial regions between DLC and ductile metal inclusions are critical regions of stress and strain accumulation that can be precursors to material failure and wear. It is shown by varying the composition, resulting in tradeoffs between lubrication, toughness, and strength, the effects of these critical stresses and strains can be controlled for desired behavior. A mechanistic model to account for experimentally observed transfer film adhesion modes was also developed, and based on these results, it was shown that transfer film bonding has a significant impact on stress and wear behavior. (C) 2009 Elsevier B.V. All rights reserved.
C1 [Pearson, James D.; Zikry, Mohammed A.] N Carolina State Univ, Dept Mech & Aerosp Engn, Raleigh, NC 27695 USA.
[Wahl, Kathryn J.] USN, Res Lab, Washington, DC 20375 USA.
RP Zikry, MA (reprint author), N Carolina State Univ, Dept Mech & Aerosp Engn, Raleigh, NC 27695 USA.
EM zikry@ncsu.edu
OI Wahl, Kathryn/0000-0001-8163-6964
FU United States Air Force through MURI Award [FA9550-04-1-0381]; Office of
Naval Research
FX This work was completed with the financial support of the United States
Air Force through MURI Award # FA9550-04-1-0381. This support is
gratefully acknowledged. KJW acknowledges support by the Office of Naval
Research.
NR 34
TC 5
Z9 5
U1 1
U2 12
PU ELSEVIER SCIENCE SA
PI LAUSANNE
PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND
SN 0043-1648
J9 WEAR
JI Wear
PD APR 24
PY 2009
VL 266
IS 9-10
BP 1003
EP 1012
DI 10.1016/j.wear.2009.02.004
PG 10
WC Engineering, Mechanical; Materials Science, Multidisciplinary
SC Engineering; Materials Science
GA 442CG
UT WOS:000265816800014
ER
PT J
AU Newman, AH
Grundt, P
Cyriac, G
Deschamps, JR
Taylor, M
Kumar, R
Ho, D
Luedtke, RR
AF Newman, Amy Hauck
Grundt, Peter
Cyriac, George
Deschamps, Jeffrey R.
Taylor, Michelle
Kumar, Rakesh
Ho, David
Luedtke, Robert R.
TI N-(4-(4-(2,3-Dichloro- or
2-methoxyphenyl)piperazin-1-yl)butyl)heterobiarylcarboxamides with
Functionalized Linking Chains as High Affinity and Enantioselective D3
Receptor Antagonists
SO JOURNAL OF MEDICINAL CHEMISTRY
LA English
DT Article
ID DOPAMINE D-3 RECEPTORS; PROTEIN-COUPLED RECEPTOR; POTENTIAL
ANTIPSYCHOTIC AGENT; COCAINE-SEEKING BEHAVIOR; ABUSE THERAPEUTIC AGENTS;
PARTIAL AGONIST; IN-VIVO; PHARMACOLOGICAL ACTIONS; INDUCED
REINSTATEMENT; SELECTIVE LIGANDS
AB In the present report, the D3 receptor pharmacophore is modified in the 2,3-diCl- and 2-OCH3-phenylpiperazine class of compounds with the goal to improve D3 receptor affinity and selectivity. This extension of structure-activity relationships (SAR) has resulted in the identification of the first enantioselective D3 antagonists (R- and S-22) to be reported, wherein enantioselectivity is more pronounced at D3 than at D2, and that a binding region on the second extracellular loop (E2) may play a role in both enantioselectivity and D3 receptor selectivity. Moreover, we have discovered some of the most D3-selective compounds reported to date that show high affinity (K-i = 1 nM) for D3 and similar to 400-fold selectivity over the D2 receptor subtype. Several of these analogues showed exquisite selectivity for D3 receptors over >60 other receptors, further underscoring their value as in vivo research tools. These lead compounds also have appropriate physical characteristics for in vivo exploration and therefore will be useful in determining how intrinsic activity at D3 receptors tested in vitro is related to behaviors in animal models of addiction and other neuropsychiatric disorders.
C1 [Newman, Amy Hauck; Grundt, Peter; Cyriac, George] NIDA, Med Chem Sect, Intramural Res Program, NIH, Baltimore, MD 21224 USA.
[Taylor, Michelle; Kumar, Rakesh; Ho, David; Luedtke, Robert R.] Univ N Texas, Hlth Sci Ctr, Dept Pharmacol & Neurosci, Ft Worth, TX 76107 USA.
[Deschamps, Jeffrey R.] USN, Res Lab, Washington, DC 20375 USA.
RP Newman, AH (reprint author), NIDA, Med Chem Sect, Intramural Res Program, NIH, 333 Cassell Dr, Baltimore, MD 21224 USA.
EM anewman@intra.nida.nih.gov
OI Deschamps, Jeffrey/0000-0001-5845-0010
FU NIDA-IRP; NIH [DA13584-03S1, DA13584-01]; NIDA Addiction Treatment
Discovery Program [N01DA-1-8816]; NIDA [Y1-DA6002]; NIH Post
Baccalaureate Intramural Research Training Award (IRTA)
FX This work was supported by the NIDA-IRP, NIH Grants DA13584-03S1 and
DA13584-01 (R.R.L.) and NIDA Addiction Treatment Discovery Program
contract with SRI (Grant N01DA-1-8816). Crystallographic studies were
supported by NIDA Contract Y1-DA6002. P.G. was supported by a NIH
Postdoctoral Visiting Fellowship, and G.C. was supported by a NIH Post
Baccalaureate Intramural Research Training Award (IRTA) fellowship.
NR 62
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U1 1
U2 5
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0022-2623
J9 J MED CHEM
JI J. Med. Chem.
PD APR 23
PY 2009
VL 52
IS 8
BP 2559
EP 2570
DI 10.1021/jm900095y
PG 12
WC Chemistry, Medicinal
SC Pharmacology & Pharmacy
GA 434RV
UT WOS:000265292700039
PM 19331412
ER
PT J
AU Spallanzani, N
Rozzi, CA
Varsano, D
Baruah, T
Pederson, MR
Manghi, F
Rubio, A
AF Spallanzani, N.
Rozzi, C. A.
Varsano, D.
Baruah, T.
Pederson, M. R.
Manghi, F.
Rubio, A.
TI Photoexcitation of a Light-Harvesting Supramolecular Triad: A
Time-Dependent DFT Study
SO JOURNAL OF PHYSICAL CHEMISTRY B
LA English
DT Article
ID DENSITY-FUNCTIONAL THEORY; APPROXIMATIONS; ARCHITECTURES; SYSTEMS
AB We present the first time-dependent density functional theory (TDDFT) calculation on a light-harvesting triad carotenoid-diaryl-porphyrin-C(60). Besides the numerical challenge that the ab initio study of the electronic structure of such a large system presents, we show that TDDFT is able to provide an accurate description of the excited-state properties of the system. In particular, we calculate the photoabsorption spectrum of the supramolecular assembly, and we provide an interpretation of the photoexcitation mechanism in terms of the properties of the component moieties. The spectrum is in good agreement with experimental data, and provides useful insight on the photoinduced charge-transfer mechanism which characterizes the system.
C1 [Spallanzani, N.; Manghi, F.] Univ Modena & Reggio Emilia, Dept Phys, I-41100 Modena, Italy.
[Spallanzani, N.; Rozzi, C. A.; Varsano, D.; Manghi, F.] INFM CNR Natl Res Ctr S3, I-41100 Modena, Italy.
[Varsano, D.] ETSF, I-41100 Modena, Italy.
[Baruah, T.] Univ Texas El Paso, Dept Phys, El Paso, TX 79968 USA.
[Pederson, M. R.] USN, Res Lab, Ctr Computat Mat Sci, Washington, DC 20375 USA.
[Rubio, A.] Univ Pais Vasco UPV EHU, Nanobio Spect Grp, Donostia San Sebastian 20018, Spain.
[Rubio, A.] Univ Pais Vasco UPV EHU, Unidad Fis Mat, Ctr Mixto, CSIC UPV, Donostia San Sebastian 20018, Spain.
[Rubio, A.] ETSF, Donostia San Sebastian 20018, Spain.
RP Spallanzani, N (reprint author), Univ Modena & Reggio Emilia, Dept Phys, Via Campi 213A, I-41100 Modena, Italy.
EM nicola.spallanzani@unimore.it; rozzi@unimore.it
RI Varsano, Daniele/A-4606-2010; Octopus, TDDFT Code/E-2400-2011; Rubio,
Angel/A-5507-2008; CSIC-UPV/EHU, CFM/F-4867-2012; Manghi,
Franca/G-8719-2012; Rozzi, Carlo Andrea/D-4390-2013;
OI Varsano, Daniele/0000-0001-7675-7374; Rubio, Angel/0000-0003-2060-3151;
Rozzi, Carlo Andrea/0000-0001-6429-4835; Manghi,
Franca/0000-0001-8682-0154
FU Italian MUR; UTEP; ONR; NSF; Spanish MEC [FIS2007-65702-C02-01]; "Grupos
Consolidados UPV/EHU del Gobierno Vasco" [IT-319-07]; European Community
[NMP4-CT-2004-500198, 211956, NMP4-CT-2006-017310]
FX Funding was provided by Italian MUR through PRIN 2006. The computer
resources for the TDDFT calculations were provided by CINECA, Bologna.
T.B. acknowledges startup funds from UTEP. T.B. and M.R.P. were
supported in part by ONR and NSF. Geometry optimizations were performed
on NRL and ARL computers through the support of the DoD HPCMO. A.R.
acknowledges funding by the Spanish MEC (FIS2007-65702-C02-01), "Grupos
Consolidados UPV/EHU del Gobierno Vasco" (IT-319-07), and the European
Community through NoE Nanoquanta (NMP4-CT-2004-500198), e-13 ETSF
project (INFRA-2007-1.2.2: Grant Agreement Number 211956) and SANES
(NMP4-CT-2006-017310).
NR 25
TC 25
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U1 1
U2 16
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 23
PY 2009
VL 113
IS 16
BP 5345
EP 5349
DI 10.1021/jp900820q
PG 5
WC Chemistry, Physical
SC Chemistry
GA 434IT
UT WOS:000265269100002
PM 19331406
ER
PT J
AU Mahon, R
Moore, CI
Burris, HR
Rabinovich, WS
Stell, M
Suite, MR
Thomas, LM
AF Mahon, Rita
Moore, Christopher I.
Burris, Harris R.
Rabinovich, William S.
Stell, Mena
Suite, Michele R.
Thomas, Linda M.
TI Analysis of long-term measurements of laser propagation over the
Chesapeake Bay
SO APPLIED OPTICS
LA English
DT Article
ID ATMOSPHERIC-TURBULENCE; STRUCTURE PARAMETER; OPTICAL TURBULENCE;
REFRACTIVE-INDEX; FLUCTUATIONS; TEMPERATURE; BEHAVIOR; LAYER
AB Parameters characterizing the atmospheric turbulence in a 16 km maritime optical link were measured for the months of January through June of 2007 on a continuous basis, as conditions allowed. Both the scintillation index sigma(2)(I) and the atmospheric structure constant C-n(2) are found to have a strong dependence on the air-minus-water temperature difference. There is no obvious diurnal variation of C-n(2) or of sigma(2)(I) akin to the reduction in turbulence level seen in terrestrial links in the hour before sunrise and the hour after sunset. Results from the analysis of these data highlight a need for new approaches to modeling beam propagation in a maritime environment. (c) 2009 Optical Society of America
C1 [Mahon, Rita; Moore, Christopher I.; Burris, Harris R.; Rabinovich, William S.; Suite, Michele R.; Thomas, Linda M.] USN, Res Lab, Washington, DC 20375 USA.
[Stell, Mena] Res Support Instruments Inc, Lanham, MD 20706 USA.
RP Mahon, R (reprint author), USN, Res Lab, 4555 Overlook Ave, Washington, DC 20375 USA.
EM rita.mahon@nrl.navy.mil
FU Office of Naval Research (ONR)
FX Weather data from the National Data Buoy Center is greatly appreciated,
as is the support of the Office of Naval Research (ONR).
NR 23
TC 14
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U1 0
U2 3
PU OPTICAL SOC AMER
PI WASHINGTON
PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA
SN 1559-128X
EI 2155-3165
J9 APPL OPTICS
JI Appl. Optics
PD APR 20
PY 2009
VL 48
IS 12
BP 2388
EP 2400
DI 10.1364/AO.48.002388
PG 13
WC Optics
SC Optics
GA 443CG
UT WOS:000265887200025
PM 19381192
ER
PT J
AU Laming, JM
AF Laming, J. Martin
TI NON-WKB MODELS OF THE FIRST IONIZATION POTENTIAL EFFECT: IMPLICATIONS
FOR SOLAR CORONAL HEATING AND THE CORONAL HELIUM AND NEON ABUNDANCES
SO ASTROPHYSICAL JOURNAL
LA English
DT Article
DE Sun: abundances; Sun: chromosphere; turbulence; waves
ID UNRESOLVED FINE-STRUCTURES; MINOR ION ABUNDANCES; TRANSITION REGION;
MAGNETIC-FIELD; ALFVEN WAVES; QUIET SUN; TEMPERATURE REGION; ELEMENT
ABUNDANCES; RATE COEFFICIENTS; NE/O ABUNDANCE
AB We revisit in more detail a model for element abundance fractionation in the solar chromosphere that gives rise to the "first ionization potential (FIP) effect" in the solar corona and wind. Elements with first ionization potential below about 10 eV, i.e., those that are predominantly ionized in the chromosphere, are enriched in the corona by a factor of 3-4. We model the propagation of Alfven waves through the chromosphere using a non-WKB treatment, and evaluate the ponderomotive force associated with these waves. Under solar conditions, this is generally pointed upward in the chromosphere, and enhances the abundance of chromospheric ions in the corona. Our new approach captures the essentials of the solar coronal abundance anomalies, including the depletion of He relative to H, and also the putative depletion of Ne, recently discussed in the literature. We also argue that the FIP effect provides the strongest evidence to date for energy fluxes of Alfven waves sufficient to heat the corona. However, it appears that these waves must also be generated in the corona, in order to preserve the rather regular fractionation pattern without strong variations from loop to loop observed in the solar corona and slow-speed solar wind.
C1 USN, Res Lab, Div Space Sci, Washington, DC 20375 USA.
RP Laming, JM (reprint author), USN, Res Lab, Div Space Sci, Code 7674L, Washington, DC 20375 USA.
FU NASA [NNG05HL39I]; Office of Naval Research
FX This work was supported by NASA Contract NNG05HL39I and by basic
research funds of the Office of Naval Research. I thank Daniel Savin,
Cara Rakowski, and an anonymous referee for comments on the manuscript.
NR 68
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U1 0
U2 3
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 2009
VL 695
IS 2
BP 954
EP 969
DI 10.1088/0004-637X/695/2/954
PG 16
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 430VS
UT WOS:000265018300017
ER
PT J
AU Book, JW
Martin, PJ
Janekovic, I
Kuzmic, M
Wimbush, M
AF Book, J. W.
Martin, P. J.
Janekovic, I.
Kuzmic, M.
Wimbush, M.
TI Vertical structure of bottom Ekman tidal flows: Observations, theory,
and modeling from the northern Adriatic
SO JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
LA English
DT Article
ID DATA ASSIMILATION; BOUNDARY-LAYER; SOUTHERN FLANK; GEORGES BANK; SEA;
TIDES; CURRENTS; CIRCULATION; PREDICTION; MAINE
AB From September 2002 to May 2003, fifteen bottom-mounted, acoustic Doppler current profilers measured currents of the northern Adriatic basin. Tidal fluctuations at all seven of the major Adriatic frequencies were synthesized from a response tidal analysis of these measurements. Most observed tidal current ellipses were nearly reversing, but near the bottom, tidal current ellipses all shortened and broadened, semidiurnal currents led upper water column currents, and diurnal tidal current ellipse orientations rotated counterclockwise toward the bottom. Theoretical solutions for a tidally forced, bottom Ekman layer with vertical eddy viscosity of the form A(z) = beta z + k were least squares fit to the observations. Average values were beta = 3 . 10(-4) m/s and k = 5 . 10(-4) m(2)/s. This value of k was important in matching tidal orientation and phase changes, and a nonzero beta was important in matching tidal amplitude changes. The Navy Coastal Ocean Model (NCOM) and the Quoddy model were also compared to the observations. The average RMS errors for the bottom Ekman layer were 0.22 cm/s for the best fit theory, 0.35 cm/s for NCOM, and 0.36 cm/s for Quoddy. A(z) structures from NCOM and Quoddy show that time variation in A(z) is relatively unimportant for Adriatic tides. The bottom shear stresses from theory were larger in magnitude than those from the bottom drag formulations in NCOM and Quoddy.
C1 [Book, J. W.; Martin, P. J.] USN, Res Lab, Stennis Space Ctr, MS 39529 USA.
[Janekovic, I.; Kuzmic, M.] Rudjer Boskovic Inst, Ctr Marine & Environm Res, Zagreb 10002, Croatia.
[Wimbush, M.] Univ Rhode Isl, Grad Sch Oceanog, Narragansett, RI 02882 USA.
RP Book, JW (reprint author), USN, Res Lab, Stennis Space Ctr, MS 39529 USA.
EM book@nrlssc.navy.mil
RI Janekovic, Ivica/N-7639-2013
FU Croatian Ministry of Science, Education and Sport [098-0982705-2707];
Office of Naval Research [0602435N]; NRL [NRL/JA/7330-07-7218]
FX We thank Hank Perkins, Mark Hulbert, and Ray Burge of NRL; the technical
mooring team of NURC; and all those aboard the R/V Alliance during the
adria02 and adria03 cruises for their work in the successful deployment
and recovery of all the JRP moorings. We thank the NATO Undersea
Research Centre and chief scientist Richard Signell for their many
contributions to the success of the JRP and for sharing their data. The
entire adria23 group has been very generous with sharing of ideas and
data, and this paper benefited in many ways from this Rossby, Bud
Vincent, and David Wang for their insightful comments on this work. The
work of Ivica Janekovic and Milivoj Kuzmic was supported by the Croatian
Ministry of Science, Education and Sport under project grant
098-0982705-2707. The work of J. W. Book and Paul Martin was supported
by the Office of Naval Research as part of the research programs
"Adriatic Circulation Experiment'' and "Dynamics of the Adriatic in
Real-Time'' under program element 0602435N. Additional support for the
work of J. W. Book was provided by the NRL Advanced Graduate Research
Program. This is NRL contribution NRL/JA/7330-07-7218.
NR 47
TC 9
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U1 0
U2 1
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 0148-0227
J9 J GEOPHYS RES-OCEANS
JI J. Geophys. Res.-Oceans
PD APR 17
PY 2009
VL 114
AR C01S06
DI 10.1029/2008JC004736
PG 23
WC Oceanography
SC Oceanography
GA 435FX
UT WOS:000265330400001
ER
PT J
AU LeardMann, CA
Smith, TC
Smith, B
Wells, TS
Ryan, MAK
AF LeardMann, Cynthia A.
Smith, Tyler C.
Smith, Besa
Wells, Timothy S.
Ryan, Margaret A. K.
CA Millennium Cohort Study Team
TI Baseline self reported functional health and vulnerability to
post-traumatic stress disorder after combat deployment: prospective US
military cohort study
SO BRITISH MEDICAL JOURNAL
LA English
DT Article
ID QUALITY-OF-LIFE; ADVERSE CHILDHOOD EXPERIENCES; MALE VIETNAM VETERANS;
GULF-WAR VETERANS; MILLENNIUM COHORT; MENTAL-HEALTH; RISK-FACTORS;
PHYSICAL SYMPTOMS; TRAUMATIC EVENTS; IRAQ WAR
AB Objective To determine if baseline functional health status, as measured by SF-36 (veterans), predicts new onset symptoms or diagnosis of post-traumatic stress disorder among deployed US military personnel with combat exposure.
Design Prospective cohort analysis.
Setting Millennium Cohort.
Participants Combat deployed members who completed baseline (2001-3) and follow-up (2004-6) questionnaires. Self reported and electronic data used to examine the relation between functional health and post-traumatic stress disorder.
Main outcome measures New onset post-traumatic stress disorder as measured by either meeting the DSM-IV criteria with the 17 item post-traumatic stress disorder checklist-civilian version or self report of a physician diagnosis at follow- up with the absence of both at baseline.
Results Of the 5410 eligible participants, 395 (7.3%) had new onset symptoms or diagnosis of post-traumatic stress disorder at the time of follow- up. Individuals whose baseline mental or physical component summary scores were below the 15th centile had two to three times the risk of symptoms or a diagnosis of post-traumatic stress disorder by follow- up compared with those in the 15th to 85th centile. Of those with new onset symptoms or diagnosis of post-traumatic stress disorder, over half (58%) of cases occurred among participants with scores below the 15th centile at baseline.
Conclusions Low mental or physical health status before combat exposure significantly increases the risk of symptoms or diagnosis of post-traumatic stress disorder after deployment. More vulnerable members of a population could be identified and benefit from interventions targeted to prevent new onset post-traumatic stress disorder.
C1 [LeardMann, Cynthia A.; Smith, Tyler C.; Smith, Besa] Naval Hlth Res Ctr, Dept Def Ctr Deployment Hlth Res, San Diego, CA 92106 USA.
[Wells, Timothy S.] AF Res Lab, Biosci & Protect Div, Wright Patterson AFB, OH 45433 USA.
[Ryan, Margaret A. K.] Naval Hosp Camp Pendleton, Camp Pendleton, CA 92055 USA.
RP LeardMann, CA (reprint author), Naval Hlth Res Ctr, Dept Def Ctr Deployment Hlth Res, 140 Sylvester Rd, San Diego, CA 92106 USA.
EM Cynthia.LeardMann@med.navy.mil
FU Naval Health Research Center [08-07]; US Department of Defense [60002];
US Department of the Navy; US Department of the Army; US Department of
the Air Force; US Department of Defense; US Department of Veterans
Affairs; US Government
FX This represents Naval Health Research Center report 08-07, supported by
the US Department of Defense, under work unit No 60002. Funding sources
did not play any other role. The views expressed in this article are
those of the authors and do not reflect the official policy or position
of the US Department of the Navy, US Department of the Army, US
Department of the Air Force, US Department of Defense, US Department of
Veterans Affairs, or the US Government.
NR 67
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U1 2
U2 10
PU B M J PUBLISHING GROUP
PI LONDON
PA BRITISH MED ASSOC HOUSE, TAVISTOCK SQUARE, LONDON WC1H 9JR, ENGLAND
SN 0959-8146
J9 BRIT MED J
JI Br. Med. J.
PD APR 16
PY 2009
VL 338
AR b1273
DI 10.1136/bmj.b1273
PG 9
WC Medicine, General & Internal
SC General & Internal Medicine
GA 434TK
UT WOS:000265296800001
PM 19372117
ER
PT J
AU Conroy, MW
Oleynik, II
Zybin, SV
White, CT
AF Conroy, M. W.
Oleynik, I. I.
Zybin, S. V.
White, C. T.
TI Density Functional Theory Calculations of Solid Nitromethane under
Hydrostatic and Uniaxial Compressions with Empirical van der Waals
Correction
SO JOURNAL OF PHYSICAL CHEMISTRY A
LA English
DT Article
ID GENERALIZED GRADIENT APPROXIMATION; TOTAL-ENERGY CALCULATIONS;
AUGMENTED-WAVE METHOD; AB-INITIO; ULTRASOFT PSEUDOPOTENTIALS; BASIS-SET;
GPA; SENSITIVITY; MOLECULES; PRESSURE
AB First-principles density functional theory calculations have been performed with and without an empirical van der Waals (vdW) correction to obtain constitutive relationships of solid nitromethane under hydrostatic and uniaxial compressions. The unit-cell parameters at zero pressure and the hydrostatic equation of state at 0 K are in reasonable agreement with experimental data using pure DFT, and the agreement is significantly improved with the inclusion of the vdW dispersion correction. Uniaxial compressions normal to the {100}, {010}, {001}, {110}, {101}, {011}, and {111} planes were performed, and a comparison of the principal stresses, changes in energy, and shear stresses for different compression directions clearly indicate anisotropic behavior of solid nitromethane upon compression. The calculated anisotropic constitutive relationships might help to link the anisotropic shock sensitivity and the underlying atomic-scale properties of solid nitromethane.
C1 [Conroy, M. W.; Oleynik, I. I.] Univ S Florida, Dept Phys, Tampa, FL 33620 USA.
[Zybin, S. V.] CALTECH, Mat & Proc Simulat Ctr, Pasadena, CA 91125 USA.
[White, C. T.] USN, Res Lab, Washington, DC 20375 USA.
RP Conroy, MW (reprint author), Univ S Florida, Dept Phys, Tampa, FL 33620 USA.
RI Oleynik, Ivan/R-5004-2016
OI Oleynik, Ivan/0000-0002-5348-6484
FU Office of Naval Research (ONR); ONR [TG-DMR070018N, TG-MCA08X040]
FX The work at USF was supported by the Office of Naval Research (ONR)
through the Naval Research Laboratory (NRL) and partly by the Army
Research Office through the MURI on Insensitive Munitions, DURIP, and
the USF Center for Functional Integrative Materials. The work at Caltech
was supported by the ONR, and ARO through the MURI on Insensitive
Munitions. The work at NRL was supported by ONR both directly and
through NRL. The computations were performed using NSF Teragrid
computational facilities (Grant Nos. TG-DMR070018N and TG-MCA08X040).
NR 44
TC 30
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U1 1
U2 12
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 16
PY 2009
VL 113
IS 15
BP 3610
EP 3614
DI 10.1021/jp809843k
PG 5
WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical
SC Chemistry; Physics
GA 430ZF
UT WOS:000265030400026
PM 19320444
ER
PT J
AU O'Shaughnessy, TJ
Liu, JL
Ma, W
AF O'Shaughnessy, Thomas J.
Liu, Jinny L.
Ma, Wu
TI Passaged neural stem cell-derived neuronal networks for a portable
biosensor
SO BIOSENSORS & BIOELECTRONICS
LA English
DT Article
DE Neural stem cells; Differentiation; bFGF; BDNF; Microelectrode array;
Biosensor
ID PRECURSOR CELLS; MARINE TOXINS; CULTURES; RECEPTOR; DIFFERENTIATION;
SAXITOXIN; EXPRESS
AB We have previously demonstrated a portable biosensor that utilizes networks of mammalian neurons on microelectrode arrays (MEAs) as the sensing element. These neuronal cultures on MEAs are derived from primary neuronal tissues and are short-lived. In order to extend the shelf life of neuronal networks for use in a fieldable sensor technology, a renewable source of networks is needed. Neural stem and progenitor cells are capable of self-renewal and differentiation into functional neuronal networks. The purpose of this study was to develop a strategy for growing passaged neural stem and progenitor cells on MEAs under controlled conditions to produce differentiated neurons and glia comprising functional neuronal networks. Primary and passaged neuroepithelial stem and progenitor cells dissociated from embryonic day 13 rat cortex were seeded on MEAs and maintained with serum-free medium containing basic fibroblast growth factor (bFGF) combined with brain-derived neurotrophic factor (BDNF). These culture conditions lead to abundant neurons, with astrocytes as supportive cells, forming synaptically linked networks of neurons. Spontaneous action potentials were best recorded from networks derived from primary or passaged progenitor cells 4-5 weeks after initial culture. The passaged progenitor cell-derived networks on MEAs responded to the GABA(A) antagonist bicuculline, the NMDA glutamate inhibitor APV, and the non-NMDA glutamate antagonist CNQX indicating active synapses were present. Passaged neural stem and progenitor cell-derived networks on MEAs have properties similar to networks derived from primary neuronal cultures and can serve as a renewable supply of sensor elements for detection of environmental threats. Published by Elsevier B.V.
C1 [O'Shaughnessy, Thomas J.; Liu, Jinny L.; Ma, Wu] USN, Res Lab, Ctr Biomol Sci & Engn, Washington, DC 20375 USA.
RP O'Shaughnessy, TJ (reprint author), USN, Res Lab, Ctr Biomol Sci & Engn, Code 6900,4555 Overlook Ave, Washington, DC 20375 USA.
EM thomas.oshaughnessy@nrl.navy.mil
NR 22
TC 7
Z9 8
U1 0
U2 8
PU ELSEVIER ADVANCED TECHNOLOGY
PI OXFORD
PA OXFORD FULFILLMENT CENTRE THE BOULEVARD, LANGFORD LANE, KIDLINGTON,
OXFORD OX5 1GB, OXON, ENGLAND
SN 0956-5663
J9 BIOSENS BIOELECTRON
JI Biosens. Bioelectron.
PD APR 15
PY 2009
VL 24
IS 8
BP 2365
EP 2370
DI 10.1016/j.bios.2008.12.007
PG 6
WC Biophysics; Biotechnology & Applied Microbiology; Chemistry, Analytical;
Electrochemistry; Nanoscience & Nanotechnology
SC Biophysics; Biotechnology & Applied Microbiology; Chemistry;
Electrochemistry; Science & Technology - Other Topics
GA 442AC
UT WOS:000265811000009
PM 19162463
ER
PT J
AU Benavides, LC
Gates, JD
Carmichael, MG
Patel, R
Holmes, JP
Hueman, MT
Mittendorf, EA
Craig, D
Stojadinovic, A
Ponniah, S
Peoples, GE
AF Benavides, Linda C.
Gates, Jeremy D.
Carmichael, Mark G.
Patel, Ritesh
Holmes, Jarrod P.
Hueman, Matthew T.
Mittendorf, Elizabeth A.
Craig, Dianna
Stojadinovic, Alexander
Ponniah, Sathibalan
Peoples, George E.
TI The Impact of HER2/neu Expression Level on Response to the E75 Vaccine:
From US Military Cancer Institute Clinical Trials Group Study I-01 and
I-02
SO CLINICAL CANCER RESEARCH
LA English
DT Article
ID METASTATIC BREAST-CANCER; OVARIAN-CANCER; MONOCLONAL-ANTIBODY; CYTOLYTIC
ACTIVITY; PEPTIDE VACCINE; T-LYMPHOCYTES; TRASTUZUMAB; HER-2/NEU;
RECURRENCE; IMMUNIZATION
AB Purpose: HER2/neu, a source of immunogenic peptides, is expressed in > 75% of breast cancer patients. We have conducted clinical trials with the HER2/neu E75 peptide vaccine in breast cancer patients with varying levels of HER2/neu expression. Vaccine response based on HER2/neu expression level was analyzed.
Experimental Design: Patients were stratified by HER2/neu expression. Low expressors (n = 100) were defined as HER2/neu immunohistochemistry (IHC) 1(+) to 2(+) or fluorescence in situ hybridization <2.0. Overexpressors (n = 51) were defined as IHC 3(+) or fluorescence in situ hybridization >= 2.0. Additional analyses were done stratifying by IHC status (0-3(+)). Standard clinocopathlogic factors, immunologic response (in vivo delayed-type hypersensitivity reactions; ex vivo human leukocyte antigen A2:immunoglobulin G dimer assay), and clinical responses (recurrence; mortality) were assessed.
Results: Low-expressor (control, 44; vaccinated, 56) versus overexpressor patients (control, 22; vaccinated, 29) were assessed. Low expressors, overexpressors, and most IHC-status vaccinated groups responded immunologically. Vaccinated low-expressor patients had larger maximum immunologic responses compared with overexpressor patients (P = 0.04), and vaccinated IHC 1(+) patients had increased long-term immune response (P = 0.08). More importantly, compared with controls, low-expressor patients had a mortality reduction (P = 0.08). The largest decrease in mortality was seen in lHC 1(+) patients (P = 0.05). In addition, a subset of overexpressor patients (n = 7) received trastuzumab before vaccination, and this combination seems safe and immunologically beneficial.
Conclusions: Most patients with various levels of HER2/neu expression responded immunologically and seemed to benefit from vaccination. The low expressors, specifically IHC 1(+) patients, had more robust immunologic responses and may derive the greatest clinical benefit from the E75 vaccine.
C1 [Benavides, Linda C.; Gates, Jeremy D.; Peoples, George E.] Brooke Army Med Ctr, Dept Surg, Gen Surg Serv, Houston, TX 78234 USA.
[Carmichael, Mark G.] Walter Reed Army Med Ctr, Dept Med, Hematol & Med Oncol Serv, Washington, DC 20307 USA.
[Patel, Ritesh; Stojadinovic, Alexander] Walter Reed Army Med Ctr, Dept Surg, Gen Surg Serv, Washington, DC 20307 USA.
[Holmes, Jarrod P.; Craig, Dianna] Windber Med Ctr, Joyce Murtha Breast Care Ctr, Windber, PA USA.
[Hueman, Matthew T.] USN, San Diego Med Ctr, Dept Hematol & Med Oncol, San Diego, CA 92152 USA.
[Mittendorf, Elizabeth A.; Ponniah, Sathibalan; Peoples, George E.] Uniformed Serv Univ Hlth Sci, Dept Surg, US Mil Canc Inst, Canc Vaccine Dev Program, Bethesda, MD 20814 USA.
Univ Texas MD Anderson Canc Ctr, Dept Surg Oncol, Houston, TX 77030 USA.
RP Peoples, GE (reprint author), Brooke Army Med Ctr, Dept Surg, Gen Surg Serv, 3851 Roger Brooke Dr, Houston, TX 78234 USA.
EM george.peoples@amedd.army.mil
FU U.S. Military Cancer Institute; Department of Clinical Investigation at
Walter Reed Army Medical Center, Washington, DC; Clinical Breast Care
Project
FX The costs of publication of this article were defrayed in part by the
payment of page charges. This article must therefore be hereby marked
advertisement in accordance with 18 U.S.C. Section 1734 solely to
indicate this fact.
NR 42
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Z9 52
U1 0
U2 2
PU AMER ASSOC CANCER RESEARCH
PI PHILADELPHIA
PA 615 CHESTNUT ST, 17TH FLOOR, PHILADELPHIA, PA 19106-4404 USA
SN 1078-0432
J9 CLIN CANCER RES
JI Clin. Cancer Res.
PD APR 15
PY 2009
VL 15
IS 8
BP 2895
EP 2904
DI 10.1158/1078-0432.CCR-08-1126
PG 10
WC Oncology
SC Oncology
GA 435AC
UT WOS:000265314600037
PM 19351776
ER
PT J
AU Fischer, AE
McEvoy, TM
Long, JW
AF Fischer, Anne E.
McEvoy, Todd M.
Long, Jeffrey W.
TI Characterization of ultrathin electroactive films synthesized via the
self-limiting electropolymerization of o-methoxyaniline
SO ELECTROCHIMICA ACTA
LA English
DT Article
DE Conducting polymer; Redox polymer; Poly(o-methoxyaniline); Energy
storage; Self-limiting
ID ATOMIC-FORCE MICROSCOPY; REDOX POLYMER-FILMS; CONDUCTING POLYMERS;
ELECTROCHEMICAL CAPACITORS; HYBRID NANOARCHITECTURES; ELECTRODE
SURFACES; CYCLIC VOLTAMMETRY; MASS-SPECTROMETRY; GLUCOSE-OXIDASE;
POLYANILINE
AB The electropolymerization of o-methoxyaniline under self-limiting deposition conditions yields ultrathin (<20 nm) coatings of an insoluble, low-molecular-weight polymer on planar indium-tin-oxide electrode substrates. The self-limiting nature of the electropolymerization is achieved by using citrate-buffered aqueous electrolytes (pH 4.7) in which the developing polymer that deposits at the electrified interface is neither conductive nor permeable to monomer. Although non-conductive as electrodeposited, the resulting poly(o-methoxyaniline) coating becomes electroactive when transferred to acidic aqueous electrolytes. The morphology and chemical structure of the poly(o-methoxyaniline) coatings are characterized by surface-sensitive methods including atomic force microscopy. specular-reflectance infrared spectroscopy, X-ray photoelectron spectroscopy, and electrochemistry. Fundamental understanding of the structure/property relationships derived from these investigations on planar substrates will ultimately be applied to three-dimensional electrode nanoarchitectures that incorporate such electroactive coatings for enhanced charge-storage functionality. (C) 2008 Elsevier Ltd. All rights reserved.
C1 [Fischer, Anne E.; McEvoy, Todd M.; Long, Jeffrey W.] USN, Res Lab, Surface Chem Branch, Washington, DC 20375 USA.
RP Long, JW (reprint author), USN, Res Lab, Surface Chem Branch, Code 6170,4555 Overlook Ave SW, Washington, DC 20375 USA.
EM jeffrey.long@nrl.navy.mil
FU National Research Council
FX Financial support for this research was provided by the Office of Naval
Research. T.M.M. (2003-2004) and A.E.F. (2006-2007) acknowledge the
National Research Council for postdoctoral fellowships. The authors
thank Dr. Debra Rolison (Naval Research Laboratory) for helpful
discussions in the preparation of this manuscript.
NR 64
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U1 0
U2 11
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0013-4686
EI 1873-3859
J9 ELECTROCHIM ACTA
JI Electrochim. Acta
PD APR 15
PY 2009
VL 54
IS 11
BP 2962
EP 2970
DI 10.1016/j.electacta.2008.12.023
PG 9
WC Electrochemistry
SC Electrochemistry
GA 435KF
UT WOS:000265342100003
ER
PT J
AU Crum-Cianflone, N
Dilay, A
Collins, G
Asher, D
Campin, R
Medina, S
Goodman, Z
Parker, R
Lifson, A
Capozza, T
Bavaro, M
Hale, B
Hames, C
AF Crum-Cianflone, Nancy
Dilay, Angelica
Collins, Gary
Asher, Dean
Campin, Richard
Medina, Sheila
Goodman, Zach
Parker, Robin
Lifson, Alan
Capozza, Thomas
Bavaro, Mary
Hale, Braden
Hames, Charles
TI Nonalcoholic Fatty Liver Disease Among HIV-Infected Persons
SO JAIDS-JOURNAL OF ACQUIRED IMMUNE DEFICIENCY SYNDROMES
LA English
DT Article; Proceedings Paper
CT 14th Conference on Retroviruses and Opportunistic Infections
CY FEB 25-28, 2007
CL Los Angeles, CA
DE antiretroviral medication; HIV; liver disease; NAFLD; steatosis
ID HEPATITIS-C-VIRUS; HUMAN-IMMUNODEFICIENCY-VIRUS; HCV COINFECTED
PATIENTS; BODY-MASS INDEX; METABOLIC SYNDROME; ANTIRETROVIRAL THERAPY;
INSULIN-RESISTANCE; UNITED-STATES; STEATOSIS; STEATOHEPATITIS
AB Objective: To describe the prevalence and factors associated with nonalcoholic fatty liver disease (NAFLD) among HIV-infected persons not infected with hepatitis C virus (HCV).
Design: A cross-sectional study among HIV-infected patients in a large HIV clinic.
Methods: NAFLD was defined as steatosis among patients without viral hepatitis (B or Q coinfection or excessive alcohol use. The prevalence of NAFLD was identified by ultrasound examination evaluated by 2 radiologists blinded to the clinic information; liver biopsies were performed on a subset of the Study population. Factors associated with NAFLD were evaluated by proportional odds logistic regression models.
Results: Sixty-seven of 216 patients (31%) had NAFLD based on ultrasound evaluation. Among those with NAFLD, steatosis was graded as mild in 60%, moderate in 28%, and severe/marked in 12%. Factors associated with the degree of steatosis on ultrasound examination in the multivariate model included increased waist circumference [odds ratio (OR) 2.1 per 10 cm, P < 0.001], elevated triglyceride levels (OR 1.2 per 100 mg/dL, P = 0.03), and lower high-density lipoprotein levels (OR 0.7, per 10 mg/dL, P = 0.03). African Americans were less likely to have NAFLD compared with whites (14% vs. 35%), although this did not reach statistical significance (OR 0.4, P = 0.08). Similar associations were noted for the subset of patients diagnosed by liver biopsy. CD4 cell count, HIV, viral load, duration of HIV infection, and antiretroviral medications were not independent risk factors associated with NAFLD after adjustment for dyslipidemia or waist circumference.
Conclusions: NAFLD was common among this cohort of HIV-infected HCV-seronegative patients. NAFLD was associated with a greater waist circumference, low high-density lipoprotein, and high triglyceride levels. Antiretroviral medications were not associated with NAFLD; prospective studies are needed to confirm this finding.
C1 [Crum-Cianflone, Nancy; Medina, Sheila; Bavaro, Mary; Hale, Braden] USN, San Diego Med Ctr, HIV Clin, San Diego, CA 92134 USA.
[Crum-Cianflone, Nancy; Medina, Sheila; Hale, Braden] IDCRP, Bethesda, MD USA.
[Crum-Cianflone, Nancy; Dilay, Angelica] San Diego State Univ, Sch Publ Hlth Dept, San Diego, CA 92182 USA.
[Collins, Gary; Lifson, Alan] Univ Minnesota, Sch Publ Hlth, Div Biostat, Minneapolis, MN 55455 USA.
[Asher, Dean; Campin, Richard; Parker, Robin] USN, San Diego Med Ctr, Dept Radiol, San Diego, CA 92134 USA.
[Goodman, Zach] Armed Forces Inst Pathol, Washington, DC 20306 USA.
[Capozza, Thomas; Hames, Charles] USN, San Diego Med Ctr, Dept Gastroenterol, San Diego, CA 92134 USA.
RP Crum-Cianflone, N (reprint author), USN, San Diego Med Ctr, Clin Invest Dept KCA, 34800 Bob Wilson Dr,Suite 5, San Diego, CA 92134 USA.
EM nancy.crum@med.navy.mil
FU NIAID NIH HHS [HU0001-05-2-0011]; PHS HHS [HU0001-05-2-0011]
NR 53
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U1 0
U2 1
PU LIPPINCOTT WILLIAMS & WILKINS
PI PHILADELPHIA
PA 530 WALNUT ST, PHILADELPHIA, PA 19106-3621 USA
SN 1525-4135
J9 JAIDS-J ACQ IMM DEF
JI JAIDS
PD APR 15
PY 2009
VL 50
IS 5
BP 464
EP 473
PG 10
WC Immunology; Infectious Diseases
SC Immunology; Infectious Diseases
GA 424BJ
UT WOS:000264540200004
PM 19225402
ER
PT J
AU Knepper, R
Snyder, MR
Fritz, G
Fisher, K
Knio, OM
Weihs, TP
AF Knepper, Robert
Snyder, Murray R.
Fritz, Greg
Fisher, Kaitlynn
Knio, Omar M.
Weihs, Timothy P.
TI Effect of varying bilayer spacing distribution on reaction heat and
velocity in reactive Al/Ni multilayers
SO JOURNAL OF APPLIED PHYSICS
LA English
DT Article
DE aluminium; heat of reaction; multilayers; nanostructured materials;
nickel; numerical analysis; reaction kinetics theory; sputter
deposition; thermal diffusivity
ID SELF-PROPAGATING REACTIONS; HIGH-TEMPERATURE SYNTHESIS; SOLID-STATE
REACTIONS; COMBUSTION SYNTHESIS; PHASE-FORMATION; THIN-FILMS; EXOTHERMIC
REACTIONS; GASLESS COMBUSTION; SHS PROCESS; FOILS
AB Self-propagating reactions in Al/Ni nanostructured multilayer foils are examined both experimentally and computationally to determine the impact of variations in reactant spacing on reaction properties. Heats of reaction and reaction velocities have been characterized as a function of average bilayer spacing for sputter-deposited, single-bilayer foils (having a uniform bilayer spacing) and for dual-bilayer foils (having two different bilayer spacings that are labeled thick and thin). In the latter case, the spatial distribution of the thick and thin bilayers is found to have a significant effect on reaction velocity, with coarse distributions leading to much higher reaction velocities than fine distributions. Numerical simulations of reaction velocity match experimental data well for most spatial distributions, with the exception of very coarse distributions or distributions containing very small bilayer spacings. A simple model based on thermal diffusivities and reaction velocities is proposed to predict when the spatial distribution of thick and thin bilayers becomes coarse enough to affect reaction velocity. This combination of experiment and simulation will allow for more effective design and prediction of reaction velocities in both sputter-deposited and mechanically processed reactive materials with variable reactant spacings.
C1 [Knepper, Robert; Fritz, Greg; Fisher, Kaitlynn; Weihs, Timothy P.] Johns Hopkins Univ, Dept Mat Sci & Engn, Baltimore, MD 21218 USA.
[Snyder, Murray R.] USN Acad, Dept Mech Engn, Annapolis, MD 21402 USA.
[Knio, Omar M.] Johns Hopkins Univ, Dept Mech Engn, Baltimore, MD 21218 USA.
RP Knepper, R (reprint author), Johns Hopkins Univ, Dept Mat Sci & Engn, 3400 N Charles St, Baltimore, MD 21218 USA.
EM weihs@jhu.edu
RI Weihs, Timothy/A-3313-2010; Knio, Omar/A-3318-2010
FU Lawrence Livermore National Laboratory [B562528]; Office of Naval
Research [N00014-07-1-0740]
FX O.M.K. and T.P.W. are founders of a company called Reactive
Nanotechnologies, Inc. (RNT), which has licensed technologies developed
at the Johns Hopkins University (described in this article). The terms
of this arrangement are being managed by the Johns Hopkins University in
accordance with its conflict of interest policies.
NR 36
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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 0021-8979
J9 J APPL PHYS
JI J. Appl. Phys.
PD APR 15
PY 2009
VL 105
IS 8
AR 083504
DI 10.1063/1.3087490
PG 9
WC Physics, Applied
SC Physics
GA 471NH
UT WOS:000268064700030
ER
PT J
AU Martinez-Miranda, LJ
Kurihara, LK
AF Martinez-Miranda, L. J.
Kurihara, Lynn K.
TI Interaction and response of a smectic-A liquid crystal to a nanometer
particle: Phase transition due to the combined effect of the
functionalization compound and particle size
SO JOURNAL OF APPLIED PHYSICS
LA English
DT Article
DE liquid crystal phase transformations; nanoparticles; particle size;
smectic liquid crystals
ID MAGNETIC NANOPARTICLES; FERROSMECTICS; FERRONEMATICS; INCLUSIONS; FILMS;
ORDER; FIELD
AB The interaction of nanometer particles with organic materials is important because of their increased use in many applications and their potential use in biosystems. We found that liquid crystals respond to nanometer particles differently depending on the surface functionalization of the nanoparticles using x rays and developed a phenomenological model to explain the differences that we observed. We found from the analysis of the peaks close to 0.199 A degrees(-1) that the inverse integrated intensity serves as a measure of how well the liquid crystal has reoriented and compared the graph obtained from the phenomenological theory to the graph obtained with the inverse integrated intensity. An analysis of the widths of these peaks (inverse correlation length) shows that the reorientation under the magnetic field can lead to a phase transition of the portion of the liquid crystal that is reorienting.
C1 [Martinez-Miranda, L. J.] Univ Maryland, Dept Mat Sci & Engn, College Pk, MD 20742 USA.
[Martinez-Miranda, L. J.] Univ Maryland, Dept Bioengn, College Pk, MD 20742 USA.
[Kurihara, Lynn K.] USN, Res Labs, Washington, DC 20375 USA.
RP Martinez-Miranda, LJ (reprint author), Univ Maryland, Dept Mat Sci & Engn, College Pk, MD 20742 USA.
EM ljmm@umd.edu
FU [NSF-MRSEC-DMR-0080808]; [NSF-MRSEC-DMR 0520471]
FX This work was partially supported by Grant Nos. NSF-MRSEC-DMR-0080808
and NSF-MRSEC-DMR 0520471. L. J. M. M. is grateful for the visiting
professorship at the CNRS in Bordeaux, France, and would like to thank,
P. V. PonsinetCluzeau, P. Poulin, P. Barois, and J. C. Loudet, from the
CNRS and H. Gleeson from The University of Manchester, UK for their
useful input and conversations. We would like to thank M. Wuttig from
the University of Maryland for help with the text.
NR 35
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U1 1
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 15
PY 2009
VL 105
IS 8
AR 084305
DI 10.1063/1.3086665
PG 7
WC Physics, Applied
SC Physics
GA 471NH
UT WOS:000268064700144
ER
PT J
AU Feldman, U
Warren, HP
Brown, CM
Doschek, GA
AF Feldman, U.
Warren, H. P.
Brown, C. M.
Doschek, G. A.
TI CAN THE COMPOSITION OF THE SOLAR CORONA BE DERIVED FROM
HINODE/EXTREME-ULTRAVIOLET IMAGING SPECTROMETER SPECTRA?
SO ASTROPHYSICAL JOURNAL
LA English
DT Article
DE Sun: abundances; Sun: corona; Sun: UV radiation
ID ELEMENTAL ABUNDANCES; EMISSION-LINES; ATOMIC DATABASE; ACTIVE REGIONS;
FLARE PLASMAS; B SATELLITE; QUIET-SUN; ATMOSPHERE; CHIANTI; HINODE
AB Elemental abundances appear to be the same everywhere in the photosphere, but in the solar corona they vary in different regions. Abundances in quiet Sun (closed) flux tubes are different from those in coronal hole (CH, open) magnetic field regions, and therefore abundance variations might possibly be used to determine locations of slow and fast solar wind in the corona. In active regions, abundances can change from region to region and can vary with the age of the region. In the present paper, we evaluate the feasibility of determining relative elemental abundances in the corona using spectra acquired by the Extreme-ultraviolet Imaging Spectrometer (EIS) on Hinode. As test cases, we attempt to evaluate the coronal composition above the limb in an equatorial quiet region and in a polar CH. We also determine the elemental composition of coronal regions with moderate activity on the disk and at the limb. To estimate the accuracy of the instrumental calibration and the atomic physics used in the calculations, we compare the derived composition with earlier derivations from spectra recorded by the Solar Ultraviolet Measurements of Emitted Radiation spectrometer in similar regions. We find that EIS can be used to determine relative abundance variations in the inner solar corona. The determination of absolute abundances can also be attempted after additional calibrations in space are accomplished.
C1 [Feldman, U.] ARTEP Inc, Ellicott City, MD USA.
[Warren, H. P.; Brown, C. M.; Doschek, G. A.] USN, Res Lab, Div Space Sci, Washington, DC 20375 USA.
RP Feldman, U (reprint author), ARTEP Inc, Ellicott City, MD USA.
FU JAXA; NAOJ; STFC; NASA; European Space Agency (ESA); NSC (Norway)
FX Hinode is a Japanese mission developed and launched by ISAS/JAXA,
collaborating with NAOJ as domestic partner, and NASA (USA) and STFC
(UK) as international partners. Scientific operation of the Hinode
mission is conducted by the Hinode science team organized at ISAS/JAXA.
This team mainly consists of scientists from institutes in the partner
countries. Support for the postlaunch operation is provided by JAXA and
NAOJ, STFC, NASA, European Space Agency (ESA), and NSC (Norway). We are
grateful to the Hinode team for all their efforts in the design, build,
and operation of the mission. The authors acknowledge support from the
NASA Hinode program.
NR 41
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U1 0
U2 3
PU IOP PUBLISHING LTD
PI BRISTOL
PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND
SN 0004-637X
J9 ASTROPHYS J
JI Astrophys. J.
PD APR 10
PY 2009
VL 695
IS 1
BP 36
EP 45
DI 10.1088/0004-637X/695/1/36
PG 10
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 427KZ
UT WOS:000264779500004
ER
PT J
AU Landi, E
Miralles, MP
Curdt, W
Hara, H
AF Landi, E.
Miralles, M. P.
Curdt, W.
Hara, H.
TI PHYSICAL PROPERTIES OF COOLING PLASMA IN QUIESCENT ACTIVE REGION LOOPS
SO ASTROPHYSICAL JOURNAL
LA English
DT Article
DE Sun: activity; Sun: corona; Sun: UV radiation
ID ULTRAVIOLET CORONAGRAPH SPECTROMETER; OPTICALLY THIN PLASMAS; IMAGING
SPECTROMETER; ATOMIC DATABASE; EMISSION-LINES; SOLAR; PROMINENCES;
CONDENSATION; DIAGNOSTICS; WAVELENGTHS
AB In the present work, we use SOHO/SUMER, SOHO/UVCS, SOHO/EIT, SOHO/LASCO, STEREO/EUVI, and Hinode/EIS coordinated observations of an active region (AR 10989) at the west limb taken on 2008 April 8 to study the cooling of coronal loops. The cooling plasma is identified using the intensities of SUMER spectral lines emitted at temperatures in the 4.15 <= log T <= 5.45 range. EIS and SUMER spectral observations are used to measure the physical properties of the loops. We found that before cooling took place these loops were filled with coronal hole-like plasma, with temperatures in the 5.6 <= log T <= 5.9 range. SUMER spectra also allowed us to determine the plasma temperature, density, emission measure, element abundances, and dynamic status during the cooling process. The ability of EUVI to observe the emitting region from a different direction allowed us to measure the volume of the emitting region and estimate its emission measure. Comparison with values measured from line intensities provided us with an estimate of the filling factor. UVCS observations of the coronal emission above the active region showed no streamer structure associated with AR 10989 at position angles between 242 degrees and 253 degrees. EIT, LASCO, and EUVI-A narrowband images and UVCS spectral observations were used to discriminate between different scenarios and monitor the behavior of the active region in time. The present study provides the first detailed measurements of the physical properties of cooling loops, a very important benchmark for theoretical models of loop cooling and condensation.
C1 [Landi, E.] USN, Res Lab, Artep Inc, Washington, DC 20375 USA.
[Miralles, M. P.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA.
[Curdt, W.] Max Planck Inst Sonnensyst Forsch, D-37191 Katlenburg Lindau, Germany.
[Hara, H.] Natl Inst Nat Sci, Natl Astron Observ Japan, Mitaka, Tokyo 1818588, Japan.
RP Landi, E (reprint author), USN, Res Lab, Artep Inc, 4555 Overlook Ave SW, Washington, DC 20375 USA.
RI Landi, Enrico/H-4493-2011
FU NASA [NNG06EA14I, NNH06CD24C, NNX06AG95G, NNX08AQ96G]; DLR; CNES; ESA
PRODEX programme (Swiss contribution)
FX The work of E. L. is supported by the NNG06EA14I, NNH06CD24C and other
NASA grants. The work of M. P. M. is supported by NASA grants NNX06AG95G
and NNX08AQ96G to the Smithsonian Astrophysical Observatory. The
ground-based polarization brightness images used here were produced by
the High Altitude Observatory's Mauna Loa Observatory. The space-based
images in Figures 1 and 2 are courtesy of the EIT and LASCO/SOHO
consortia. The SUMER project is financially supported by DLR, CNES,
NASA, and the ESA PRODEX programme (Swiss contribution). SUMER is part
of SOHO of ESA and NASA. The authors thank S. R. Cranmer for valuable
discussions, and the anonymous referee for his/her comments that helped
improve the original manuscript.
NR 40
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Z9 15
U1 0
U2 2
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 10
PY 2009
VL 695
IS 1
BP 221
EP 237
DI 10.1088/0004-637X/695/1/221
PG 17
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 427KZ
UT WOS:000264779500018
ER
PT J
AU Ugarte-Urra, I
Warren, HP
Brooks, DH
AF Ugarte-Urra, Ignacio
Warren, Harry P.
Brooks, David H.
TI ACTIVE REGION TRANSITION REGION LOOP POPULATIONS AND THEIR RELATIONSHIP
TO THE CORONA
SO ASTROPHYSICAL JOURNAL
LA English
DT Article
DE Sun: atmosphere; Sun: corona; Sun: transition region
ID EUV IMAGING SPECTROMETER; TRANSIENT BRIGHTENINGS; EXTREME-ULTRAVIOLET;
DIAGNOSTIC SPECTROMETER; MAGNETIC LOOPS; SOLAR CORONA; X-RAYS; HINODE;
TRACE; VARIABILITY
AB The relationships among coronal loop structures at different temperatures are not settled. Previous studies have suggested that coronal loops in the core of an active region (AR) are not seen cooling through lower temperatures and therefore are steadily heated. If loops were cooling, the transition region would be an ideal temperature regime to look for a signature of their evolution. The Extreme-ultraviolet Imaging Spectrometer on Hinode provides monochromatic images of the solar transition region and corona at an unprecedented cadence and spatial resolution, making it an ideal instrument to shed light on this issue. Analysis of observations of AR 10978 taken in 2007 December 8-19 indicates that there are two dominant loop populations in the AR: (1) core multitemperature loops that undergo a continuous process of heating and cooling in the full observed temperature range 0.4-2.5 MK and even higher as shown by the X-Ray Telescope and (2) peripheral loops which evolve mostly in the temperature range 0.4-1.3 MK. Loops at transition region temperatures can reach heights of 150 Mm in the corona above the limb and develop downflows with velocities in the range of 39-105 km s(-1).
C1 [Ugarte-Urra, Ignacio; Warren, Harry P.; Brooks, David H.] USN, Res Lab, Div Space Sci, Washington, DC 20375 USA.
[Ugarte-Urra, Ignacio; Brooks, David H.] George Mason Univ, Coll Sci, Fairfax, VA 22030 USA.
RP Ugarte-Urra, I (reprint author), USN, Res Lab, Div Space Sci, Code 7670, Washington, DC 20375 USA.
RI Ugarte-Urra, Ignacio/B-1241-2009
FU Hinode; Japanese mission developed and launched by ISAS/JAXA, with NAOJ
as domestic partner and NASA and STFC (UK)
FX This work was supported by Hinode, a Japanese mission developed and
launched by ISAS/JAXA, with NAOJ as domestic partner and NASA and STFC
(UK) as international partners. It is operated by these agencies in
cooperation with ESA and NSC (Norway). We are thankful to John Mariska
and the anonymous referee for the careful reading of the manuscript and
the comments that helped to improve it.
NR 50
TC 69
Z9 70
U1 0
U2 2
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 10
PY 2009
VL 695
IS 1
BP 642
EP 651
DI 10.1088/0004-637X/695/1/642
PG 10
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 427KZ
UT WOS:000264779500053
ER
PT J
AU Abdo, AA
Ackermann, M
Atwood, WB
Baldini, L
Ballet, J
Barbiellini, G
Baring, MG
Bastieri, D
Baughman, BM
Bechtol, K
Bellazzini, R
Berenji, B
Bloom, ED
Bonamente, E
Borgland, AW
Bregeon, J
Brez, A
Brigida, M
Bruel, P
Burnett, TH
Caliandro, GA
Cameron, RA
Caraveo, PA
Casandjian, JM
Cecchi, C
Charles, E
Chekhtman, A
Cheung, CC
Chiang, J
Ciprini, S
Claus, R
Cohen-Tanugi, J
Cominsky, LR
Conrad, J
Dermer, CD
de Angelis, A
de Palma, F
Digel, SW
Donato, D
Dormody, M
Silva, EDE
Drell, PS
Dubois, R
Dumora, D
Edmonds, Y
Farnier, C
Favuzzi, C
Fleury, P
Focke, WB
Frailis, M
Fukazawa, Y
Funk, S
Fusco, P
Gargano, F
Gasparrini, D
Gehrels, N
Germani, S
Giebels, B
Giglietto, N
Giordano, F
Glanzman, T
Godfrey, G
Grenier, IA
Grondin, MH
Grove, JE
Guillemot, L
Guiriec, S
Harding, AK
Hayashida, M
Hays, E
Hughes, RE
Johannesson, G
Johnson, AS
Johnson, RP
Johnson, TJ
Johnson, WN
Johnston, S
Kamae, T
Katagiri, H
Kataoka, J
Kawai, N
Kerr, M
Knodlseder, J
Komin, N
Kramer, M
Kuehn, F
Kuss, M
Latronico, L
Lee, SH
Lemoine-Goumard, M
Longo, F
Loparco, F
Lott, B
Lovellette, MN
Lubrano, P
Makeev, A
Marelli, M
Mazziotta, MN
McConville, W
McEnery, JE
Meurer, C
Michelson, PF
Mitthumsiri, W
Mizuno, T
Moiseev, AA
Monte, C
Monzani, ME
Morselli, A
Moskalenko, IV
Murgia, S
Nolan, PL
Nuss, E
Ohsugi, T
Omodei, N
Orlando, E
Ormes, JF
Paneque, D
Panetta, JH
Parent, D
Pepe, M
Pesce-Rollins, M
Piron, F
Porter, TA
Raino, S
Rando, R
Razzano, M
Reimer, A
Reimer, O
Reposeur, T
Ritz, S
Rochester, LS
Rodriguez, AY
Romani, RW
Roth, M
Ryde, F
Sadrozinski, HFW
Sanchez, D
Sander, A
Parkinson, PMS
Sgro, C
Siskind, EJ
Smith, DA
Smith, PD
Spandre, G
Spinelli, P
Starck, JL
Strickman, MS
Suson, DJ
Tajima, H
Takahashi, H
Tanaka, T
Thayer, JB
Thayer, JG
Thompson, DJ
Thorsett, SE
Tibaldo, L
Torres, DF
Tosti, G
Tramacere, A
Uchiyama, Y
Usher, TL
Van Etten, A
Vilchez, N
Vitale, V
Waite, AP
Watters, K
Wood, KS
Ylinen, T
Ziegler, M
Hobbs, G
Keith, M
Manchester, RN
Weltevrede, P
AF Abdo, A. A.
Ackermann, M.
Atwood, W. B.
Baldini, L.
Ballet, J.
Barbiellini, G.
Baring, M. G.
Bastieri, D.
Baughman, B. M.
Bechtol, K.
Bellazzini, R.
Berenji, B.
Bloom, E. D.
Bonamente, E.
Borgland, A. W.
Bregeon, J.
Brez, A.
Brigida, M.
Bruel, P.
Burnett, T. H.
Caliandro, G. A.
Cameron, R. A.
Caraveo, P. A.
Casandjian, J. M.
Cecchi, C.
Charles, E.
Chekhtman, A.
Cheung, C. C.
Chiang, J.
Ciprini, S.
Claus, R.
Cohen-Tanugi, J.
Cominsky, L. R.
Conrad, J.
Dermer, C. D.
de Angelis, A.
de Palma, F.
Digel, S. W.
Donato, D.
Dormody, M.
do Couto e Silva, E.
Drell, P. S.
Dubois, R.
Dumora, D.
Edmonds, Y.
Farnier, C.
Favuzzi, C.
Fleury, P.
Focke, W. B.
Frailis, M.
Fukazawa, Y.
Funk, S.
Fusco, P.
Gargano, F.
Gasparrini, D.
Gehrels, N.
Germani, S.
Giebels, B.
Giglietto, N.
Giordano, F.
Glanzman, T.
Godfrey, G.
Grenier, I. A.
Grondin, M. -H.
Grove, J. E.
Guillemot, L.
Guiriec, S.
Harding, A. K.
Hayashida, M.
Hays, E.
Hughes, R. E.
Johannesson, G.
Johnson, A. S.
Johnson, R. P.
Johnson, T. J.
Johnson, W. N.
Johnston, S.
Kamae, T.
Katagiri, H.
Kataoka, J.
Kawai, N.
Kerr, M.
Knoedlseder, J.
Komin, N.
Kramer, M.
Kuehn, F.
Kuss, M.
Latronico, L.
Lee, S. -H.
Lemoine-Goumard, M.
Longo, F.
Loparco, F.
Lott, B.
Lovellette, M. N.
Lubrano, P.
Makeev, A.
Marelli, M.
Mazziotta, M. N.
McConville, W.
McEnery, J. E.
Meurer, C.
Michelson, P. F.
Mitthumsiri, W.
Mizuno, T.
Moiseev, A. A.
Monte, C.
Monzani, M. E.
Morselli, A.
Moskalenko, I. V.
Murgia, S.
Nolan, P. L.
Nuss, E.
Ohsugi, T.
Omodei, N.
Orlando, E.
Ormes, J. F.
Paneque, D.
Panetta, J. H.
Parent, D.
Pepe, M.
Pesce-Rollins, M.
Piron, F.
Porter, T. A.
Raino, S.
Rando, R.
Razzano, M.
Reimer, A.
Reimer, O.
Reposeur, T.
Ritz, S.
Rochester, L. S.
Rodriguez, A. Y.
Romani, R. W.
Roth, M.
Ryde, F.
Sadrozinski, H. F. -W.
Sanchez, D.
Sander, A.
Parkinson, P. M. Saz
Sgro, C.
Siskind, E. J.
Smith, D. A.
Smith, P. D.
Spandre, G.
Spinelli, P.
Starck, J. -L.
Strickman, M. S.
Suson, D. J.
Tajima, H.
Takahashi, H.
Tanaka, T.
Thayer, J. B.
Thayer, J. G.
Thompson, D. J.
Thorsett, S. E.
Tibaldo, L.
Torres, D. F.
Tosti, G.
Tramacere, A.
Uchiyama, Y.
Usher, T. L.
Van Etten, A.
Vilchez, N.
Vitale, V.
Waite, A. P.
Watters, K.
Wood, K. S.
Ylinen, T.
Ziegler, M.
Hobbs, G.
Keith, M.
Manchester, R. N.
Weltevrede, P.
TI DISCOVERY OF PULSED gamma-RAYS FROM THE YOUNG RADIO PULSAR PSR
J1028-5819 WITH THE FERMI LARGE AREA TELESCOPE
SO ASTROPHYSICAL JOURNAL LETTERS
LA English
DT Article
DE pulsars: general; stars: neutron
ID TIME-DIFFERENCING TECHNIQUE; SPACE TELESCOPE; RADIATION; EMISSION;
CATALOG; SEARCH; GAPS
AB Radio pulsar PSR J1028-5819 was recently discovered in a high-frequency search (at 3.1 GHz) in the error circle of the Energetic Gamma-Ray Experiment Telescope (EGRET) source 3EG J1027-5817. The spin-down power of this young pulsar is great enough to make it very likely the counterpart for the EGRET source. We report here the discovery of gamma-ray pulsations from PSR J1028-5819 in early observations by the Large Area Telescope (LAT) on the Fermi Gamma-Ray Space Telescope. The gamma-ray light curve shows two sharp peaks having phase separation of 0.460 +/- 0.004, trailing the very narrow radio pulse by 0.200 +/- 0.003 in phase, very similar to that of other known gamma-ray pulsars. The measured gamma-ray flux gives an efficiency for the pulsar of similar to 10-20% (for outer magnetosphere beam models). No evidence of a surrounding pulsar wind nebula is seen in the current Fermi data but limits on associated emission are weak because the source lies in a crowded region with high background emission. However, the improved angular resolution afforded by the LAT enables the disentanglement of the previous COS-B and EGRET source detections into at least two distinct sources, one of which is now identified as PSR J1028-5819.
C1 [Cheung, C. C.; Donato, D.; Gehrels, N.; Harding, A. K.; Hays, E.; Johnson, T. J.; McConville, W.; McEnery, J. E.; Ritz, S.; Thompson, D. J.] NASA, Goddard Space Flight Ctr, CRESST, Greenbelt, MD 20771 USA.
[Abdo, A. A.; Chekhtman, A.; Dermer, C. D.; Grove, J. E.; Johnson, W. N.; Lovellette, M. N.; Makeev, A.; Strickman, M. S.; Wood, K. S.] Naval Res Lab, Div Space Sci, Washington, DC 20375 USA.
[Ackermann, M.; Bechtol, K.; Berenji, B.; Bloom, E. D.; Borgland, A. W.; Cameron, R. A.; Charles, E.; Chiang, J.; Claus, R.; Digel, S. W.; do Couto e Silva, E.; Drell, P. S.; Dubois, R.; Edmonds, Y.; Focke, W. B.; Funk, S.; Glanzman, T.; Godfrey, G.; Hayashida, M.; Johannesson, G.; Johnson, A. S.; Kamae, T.; Lee, S. -H.; Michelson, P. F.; Mitthumsiri, W.; Monzani, M. E.; Moskalenko, I. V.; Murgia, S.; Nolan, P. L.; Paneque, D.; Panetta, J. H.; Reimer, A.; Reimer, O.; Rochester, L. S.; Romani, R. W.; Tajima, H.; Tanaka, T.; Thayer, J. B.; Thayer, J. G.; Tramacere, A.; Uchiyama, Y.; Usher, T. L.; Van Etten, A.; Waite, A. P.; Watters, K.] Stanford Univ, W W Hansen Expt Phys Lab, Kavli Inst Particle Astrophys & Cosmol, Dept Phys, Stanford, CA 94305 USA.
[Ackermann, M.; Bechtol, K.; Berenji, B.; Bloom, E. D.; Borgland, A. W.; Cameron, R. A.; Charles, E.; Chiang, J.; Claus, R.; Digel, S. W.; do Couto e Silva, E.; Drell, P. S.; Dubois, R.; Edmonds, Y.; Focke, W. B.; Funk, S.; Glanzman, T.; Godfrey, G.; Hayashida, M.; Johannesson, G.; Johnson, A. S.; Kamae, T.; Lee, S. -H.; Michelson, P. F.; Mitthumsiri, W.; Monzani, M. E.; Moskalenko, I. V.; Murgia, S.; Nolan, P. L.; Paneque, D.; Panetta, J. H.; Reimer, A.; Reimer, O.; Rochester, L. S.; Romani, R. W.; Tajima, H.; Tanaka, T.; Thayer, J. B.; Thayer, J. G.; Tramacere, A.; Uchiyama, Y.; Usher, T. L.; Van Etten, A.; Waite, A. P.; Watters, K.] Stanford Univ, Stanford Linear Accelerator Ctr, Stanford, CA 94305 USA.
[Atwood, W. B.; Dormody, M.; Johnson, R. P.; Porter, T. A.; Sadrozinski, H. F. -W.; Parkinson, P. M. Saz; Thorsett, S. E.; Ziegler, M.] Univ Calif Santa Cruz, Santa Cruz Inst Particle Phys, Dept Phys, Santa Cruz, CA 95064 USA.
[Atwood, W. B.; Dormody, M.; Johnson, R. P.; Porter, T. A.; Sadrozinski, H. F. -W.; Parkinson, P. M. Saz; Thorsett, S. E.; Ziegler, M.] Univ Calif Santa Cruz, Dept Astron & Astrophys, Santa Cruz, CA 95064 USA.
[Baldini, L.; Bellazzini, R.; Bregeon, J.; Brez, A.; Kuss, M.; Latronico, L.; Omodei, N.; Pesce-Rollins, M.; Razzano, M.; Sgro, C.; Spandre, G.] Ist Nazl Fis Nucl, Sez Pisa, I-56127 Pisa, Italy.
[Ballet, J.; Casandjian, J. M.; Grenier, I. A.; Komin, N.; Starck, J. -L.] Univ Paris, CEA Saclay, Serv Astrophys, Lab AIM,CEA,IRFU,CNRS, F-91191 Gif Sur Yvette, France.
[Barbiellini, G.; Longo, F.] Ist Nazl Fis Nucl, Sez Trieste, I-34127 Trieste, Italy.
[Barbiellini, G.; Longo, F.] Univ Trieste, Dipartmento Fis, I-34127 Trieste, Italy.
[Baring, M. G.] Rice Univ, Dept Phys & Astron, Houston, TX 77251 USA.
[Bastieri, D.; Rando, R.; Tibaldo, L.] Ist Nazl Fis Nucl, Sez Padova, I-35131 Padua, Italy.
[Bastieri, D.; Rando, R.; Tibaldo, L.] Univ Padua, Dipartimento Fis G Galilei, I-35131 Padua, Italy.
[Baughman, B. M.; Hughes, R. E.; Kuehn, F.; Sander, A.; Smith, P. D.] Ohio State Univ, Dept Phys, Ctr Cosmol & Astro Particle Phys, Columbus, OH 43210 USA.
[Bonamente, E.; Cecchi, C.; Ciprini, S.; Germani, S.; Lubrano, P.; Pepe, M.; Tosti, G.] Ist Nazl Fis Nucl, Sez Perugia, I-06123 Perugia, Italy.
[Bonamente, E.; Cecchi, C.; Ciprini, S.; Germani, S.; Lubrano, P.; Pepe, M.; Tosti, G.] Univ Perugia, Dipartimento Fis, I-06123 Perugia, Italy.
[Brigida, M.; Caliandro, G. A.; de Palma, F.; Favuzzi, C.; Fusco, P.; Giglietto, N.; Giordano, F.; Loparco, F.; Monte, C.; Raino, S.; Spinelli, P.] Univ Politecn Bari, Dipartimento Fis M Merlin, I-70126 Bari, Italy.
[Brigida, M.; Caliandro, G. A.; de Palma, F.; Favuzzi, C.; Fusco, P.; Gargano, F.; Giglietto, N.; Giordano, F.; Loparco, F.; Mazziotta, M. N.; Monte, C.; Raino, S.] Ist Nazl Fis Nucl, Sez Bari, I-70126 Bari, Italy.
[Bruel, P.; Fleury, P.; Giebels, B.; Sanchez, D.] Ecole Polytech, CNRS, IN2P3, Lab Leprince Ringuet, F-91128 Palaiseau, France.
[Burnett, T. H.; Kerr, M.; Roth, M.] Univ Washington, Dept Phys, Seattle, WA 98195 USA.
[Caraveo, P. A.; Marelli, M.] INAF Ist Astrofis Spaziale & Fis Cosm, I-20133 Milan, Italy.
[Chekhtman, A.; Makeev, A.] George Mason Univ, Fairfax, VA 22030 USA.
[Cohen-Tanugi, J.; Farnier, C.; Guiriec, S.; Komin, N.; Nuss, E.; Piron, F.] Univ Montpellier 2, CNRS, IN2P3, Lab Phys Theor & Astroparticules, Montpellier, France.
[Cominsky, L. R.] Sonoma State Univ, Dept Phys & Astron, Rohnert Pk, CA 94928 USA.
[Conrad, J.; Meurer, C.; Ryde, F.; Ylinen, T.] Oskar Klein Ctr Cosmo Particle Phys, SE-10691 Stockholm, Sweden.
[Conrad, J.; Ryde, F.; Ylinen, T.] Royal Inst Technol, Dept Phys, KTH, SE-10691 Stockholm, Sweden.
[Conrad, J.; Meurer, C.] Stockholm Univ, Dept Phys, SE-10691 Stockholm, Sweden.
[de Angelis, A.; Frailis, M.] Univ Udine, Dipartimento Fis, I-33100 Udine, Italy.
[de Angelis, A.; Frailis, M.] Ist Nazl Fis Nucl, Sez Trieste, Grp Collegato Udine, I-33100 Udine, Italy.
[Dumora, D.; Grondin, M. -H.; Guillemot, L.; Lemoine-Goumard, M.; Lott, B.; Parent, D.; Reposeur, T.; Smith, D. A.] CEN Bordeaux Gradignan, CNRS, IN2P3, UMR 5797, F-33175 Gradignan, France.
[Dumora, D.; Grondin, M. -H.; Guillemot, L.; Lemoine-Goumard, M.; Lott, B.; Parent, D.; Reposeur, T.; Smith, D. A.] Univ Bordeaux, CEN Bordeaux Gradignan, UMR 5797, F-33175 Gradignan, France.
[Fukazawa, Y.; Katagiri, H.; Mizuno, T.; Ohsugi, T.; Takahashi, H.] Hiroshima Univ, Dept Phys Sci, Higashihiroshima 7398526, Japan.
[Fukazawa, Y.; Katagiri, H.; Mizuno, T.; Ohsugi, T.; Takahashi, H.] Hiroshima Univ, Hiroshima Astrophys Sci Ctr, Higashihiroshima 7398526, Japan.
[Gasparrini, D.] ASI, Sci Data Ctr, I-00044 Frascati, Roma, Italy.
[Gehrels, N.; Johnson, T. J.; Ritz, S.] Univ Maryland, College Pk, MD 20742 USA.
[Johnston, S.; Hobbs, G.; Keith, M.; Manchester, R. N.; Weltevrede, P.] CSIRO, Australia Telescope Natl Facil, Epping, NSW 1710, Australia.
[Kataoka, J.; Kawai, N.] Tokyo Inst Technol, Dept Phys, Tokyo 1528551, Japan.
[Kawai, N.] RIKEN, Inst Phys & Chem Res, Cosm Radiat Lab, Wako, Saitama 3510198, Japan.
[Knoedlseder, J.; Vilchez, N.] CNR, SUPS 47, Ctr Etud Spatiale Rayonnements, F-31028 Toulouse 4, France.
[Kramer, M.] Univ Manchester, Jodrell Bank, Ctr Astrophys, Manchester M13 9PL, Lancs, England.
[Morselli, A.; Vitale, V.] Ist Nazl Fis Nucl, Sez Roma Tor Vergata, I-00133 Rome, Italy.
[Orlando, E.] Max Planck Inst Extraterr Phys, D-85748 Garching, Germany.
[Ormes, J. F.] Univ Denver, Dept Phys & Astron, Denver, CO 80208 USA.
[Rodriguez, A. Y.; Torres, D. F.] CSIC, IEEC, Inst Ciencies Espai, Barcelona 08193, Spain.
[Siskind, E. J.] NYCB Real Time Comp Inc, Lattingtown, NY 11560 USA.
[Suson, D. J.] Purdue Univ Calumet, Dept Chem & Phys, Hammond, IN 46323 USA.
[Torres, D. F.] ICREA, Barcelona, Spain.
[Tramacere, A.] CIFS, I-10133 Turin, Italy.
[Vitale, V.] Univ Roma Tor Vergata, Dipartimento Fis, I-00133 Rome, Italy.
[Ylinen, T.] Univ Kalmar, Sch Pure & Appl Nat Sci, SE-39182 Kalmar, Sweden.
RP Harding, AK (reprint author), NASA, Goddard Space Flight Ctr, CRESST, Greenbelt, MD 20771 USA.
EM ahardingx@yahoo.com; Tyrel.J.Johnson@nasa.gov
RI Komin, Nukri/J-6781-2015; Hays, Elizabeth/D-3257-2012; Johnson,
Neil/G-3309-2014; Reimer, Olaf/A-3117-2013; Funk, Stefan/B-7629-2015;
Johannesson, Gudlaugur/O-8741-2015; Gargano, Fabio/O-8934-2015; Loparco,
Francesco/O-8847-2015; Moskalenko, Igor/A-1301-2007; Mazziotta, Mario
/O-8867-2015; Sgro, Carmelo/K-3395-2016; Torres, Diego/O-9422-2016;
Orlando, E/R-5594-2016; Nolan, Patrick/A-5582-2009; De Angelis,
Alessandro/B-5372-2009; Starck, Jean-Luc/D-9467-2011; Thompson,
David/D-2939-2012; Kuss, Michael/H-8959-2012; giglietto,
nicola/I-8951-2012; Morselli, Aldo/G-6769-2011; Tosti, Gino/E-9976-2013;
Rando, Riccardo/M-7179-2013; Harding, Alice/D-3160-2012; Gehrels,
Neil/D-2971-2012; McEnery, Julie/D-6612-2012; Baldini, Luca/E-5396-2012;
lubrano, pasquale/F-7269-2012
OI Giordano, Francesco/0000-0002-8651-2394; Thorsett,
Stephen/0000-0002-2025-9613; SPINELLI, Paolo/0000-0001-6688-8864; De
Angelis, Alessandro/0000-0002-3288-2517; Frailis,
Marco/0000-0002-7400-2135; Caraveo, Patrizia/0000-0003-2478-8018; Komin,
Nukri/0000-0003-3280-0582; Reimer, Olaf/0000-0001-6953-1385; Funk,
Stefan/0000-0002-2012-0080; Johannesson, Gudlaugur/0000-0003-1458-7036;
Gargano, Fabio/0000-0002-5055-6395; Loparco,
Francesco/0000-0002-1173-5673; Moskalenko, Igor/0000-0001-6141-458X;
Mazziotta, Mario /0000-0001-9325-4672; Torres,
Diego/0000-0002-1522-9065; Rando, Riccardo/0000-0001-6992-818X; Sgro',
Carmelo/0000-0001-5676-6214; Starck, Jean-Luc/0000-0003-2177-7794;
Thompson, David/0000-0001-5217-9135; giglietto,
nicola/0000-0002-9021-2888; Morselli, Aldo/0000-0002-7704-9553; lubrano,
pasquale/0000-0003-0221-4806
FU Istituto Nazionale di Astrofisica in Italy; K. A. Wallenberg Foundation
in Sweden
FX Additional support for science analysis during the operations phase from
the following agencies is also gratefully acknowledged: the Istituto
Nazionale di Astrofisica in Italy and the K. A. Wallenberg Foundation in
Sweden for providing a grant in support of a Royal Swedish Academy of
Sciences Research fellowship for J.C.; The Parkes radio telescope is
part of the Australia Telescope which is funded by the Commonwealth of
Australia for operation as a National Facility managed by the CSIRO.
NR 26
TC 30
Z9 31
U1 0
U2 1
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 2041-8205
EI 2041-8213
J9 ASTROPHYS J LETT
JI Astrophys. J. Lett.
PD APR 10
PY 2009
VL 695
IS 1
BP L72
EP L77
DI 10.1088/0004-637X/695/1/L72
PG 6
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 424BE
UT WOS:000264539700016
ER
PT J
AU Jaramillo, S
Sheremet, A
Allison, MA
Reed, AH
Holland, KT
AF Jaramillo, S.
Sheremet, A.
Allison, M. A.
Reed, A. H.
Holland, K. T.
TI Wave-mud interactions over the muddy Atchafalaya subaqueous clinoform,
Louisiana, United States: Wave-supported sediment transport
SO JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
LA English
DT Article
ID RIVER CONTINENTAL-SHELF; NEW-GUINEA; DELTA; DEPOSITION; DYNAMICS; LAYER;
COAST; GULF; USA
AB Near-bottom fluid-mud layers were observed during two experiments conducted on the muddy Atchafalaya inner shelf (subaqueous clinoform), Louisiana, United States. On the face of the subaqueous delta (4-7 m water depth, first experiment) fluid-mud layers are produced by seafloor liquefaction and resuspension forced by swells associated with cold front passages, and supported by near-bed wave-induced turbulence. The layers are episodic (lifetime of 9-12 h), form prior to significant postfrontal settling of sediment in the overlying water column, and flow seaward (downslope) at about 5 cm/s. Farther westward on the delta front (finer grain size, with negligible sand or coarse silt content, second experiment), similar wave-supported fluid-mud layers are observed to last longer (>2 days), show weaker alongshore (westward) flow of about 1-3 cm/s. The results suggest a sequence of near-bed sediment transport processes, triggered by frontal swell activity (bed liquefaction, resuspension and advection, modulated by the bathymetric characteristics of the clinoform) that contribute to the formation of clinoform stratigraphy of muddy subaqueous deltas.
C1 [Jaramillo, S.; Sheremet, A.] Univ Florida, Gainesville, FL 32611 USA.
[Allison, M. A.] Univ Texas Austin, Inst Geophys, Austin, TX 78758 USA.
[Holland, K. T.] USN, Mapping Charting & Geodesy Branch, Res Lab, Stennis Space Ctr, MS 39529 USA.
[Reed, A. H.] USN, Seafloor Sci Branch, Res Lab, Stennis Space Ctr, MS 39529 USA.
RP Jaramillo, S (reprint author), Univ Florida, 365 Weil Hall,POB 116580, Gainesville, FL 32611 USA.
EM sjaram1@ufl.edu; alex@coastal.ufl.edu; mallison@mail.utexas.edu;
allen.reed@nrlssc.navy.mil; tholland@nrlssc.navy.mil
RI Allison, Mead/A-7208-2010; Holland, K. Todd/A-7673-2011; Jaramillo,
Sergio/K-3081-2012
OI Holland, K. Todd/0000-0002-4601-6097;
FU Office of Naval Research [N00014-07-1-0448, N00014-07-1-0607]; Naval
Research Laboratory [0601153N]; Coastal Studies Institute; Louisiana
State University
FX This work was supported through Office of Naval Research funding of
contracts N00014-07-1-0448 and N00014-07-1-0607 and Office of Naval
Research base funding of the Naval Research Laboratory, program element
0601153N. Field data were collected with support by the Field Support
Group of Coastal Studies Institute, Louisiana State University. The
authors are grateful to the two anonymous reviewers for their insightful
and constructive comments, and to Lacy Sherwood for providing the code
for ambiguity resolution.
NR 38
TC 31
Z9 31
U1 1
U2 16
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 0148-0227
J9 J GEOPHYS RES-OCEANS
JI J. Geophys. Res.-Oceans
PD APR 10
PY 2009
VL 114
AR C04002
DI 10.1029/2008JC004821
PG 18
WC Oceanography
SC Oceanography
GA 431ZM
UT WOS:000265103300001
ER
PT J
AU Prasad, SK
Rao, DSS
Sridevi, S
Lobo, CV
Ratna, BR
Naciri, J
Shashidhar, R
AF Prasad, S. Krishna
Rao, D. S. Shankar
Sridevi, S.
Lobo, Chethan V.
Ratna, B. R.
Naciri, Jawad
Shashidhar, R.
TI Unusual Dielectric and Electrical Switching Behavior in the de Vries
Smectic A Phase of Two Organosiloxane Derivatives
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID LIQUID-CRYSTALS; TILT
AB X-ray, electrical, electro-optical, and dielectric studies in the de Vries smectic A (SmA) phase of organosiloxane derivatives exhibit features surprisingly different from that of a conventional SmA phase. The switching data show a double peak profile, characteristic of an antiferroelectric (AF) structure. A model with the adjacent smectic layers having an AF-like arrangement and no global tilt correlation is proposed. Observed in molecules with differential interactions between the two termini, these findings have wide ramifications in understanding the minimum layer shrinkage of such systems.
C1 [Prasad, S. Krishna; Rao, D. S. Shankar; Sridevi, S.; Lobo, Chethan V.] Ctr Liquid Crystal Res, Bangalore 560013, Karnataka, India.
[Ratna, B. R.; Naciri, Jawad] USN, Res Lab, Ctr Biomol Sci & Engn, Washington, DC 20375 USA.
[Shashidhar, R.] Polestar Technol, Needham Hts, MA 02494 USA.
RP Prasad, SK (reprint author), Ctr Liquid Crystal Res, Bangalore 560013, Karnataka, India.
EM skpras@gmail.com
NR 22
TC 24
Z9 24
U1 2
U2 11
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 10
PY 2009
VL 102
IS 14
AR 147802
DI 10.1103/PhysRevLett.102.147802
PG 4
WC Physics, Multidisciplinary
SC Physics
GA 431SA
UT WOS:000265082500069
PM 19392483
ER
PT J
AU Deen, DA
Binari, SC
Storm, DF
Katzer, DS
Roussos, JA
Hackley, JC
Gougousi, T
AF Deen, D. A.
Binari, S. C.
Storm, D. F.
Katzer, D. S.
Roussos, J. A.
Hackley, J. C.
Gougousi, T.
TI AlN/GaN insulated gate HEMTs with HfO2 gate dielectric
SO ELECTRONICS LETTERS
LA English
DT Article
ID MOLECULAR-BEAM EPITAXY; ALGAN/GAN HEMTS; OXIDE
AB AlN/GaN single heterojunction MOS-HEMTs grown by molecular beam epitaxy have been fabricated utilising HfO2 high-K dielectrics deposited by atomic layer deposition. Typical DC transfer characteristics of 1.3 mu m gate length devices show a maximum drain current of 950 mA/mm and a transconductance of 210 mS/mm with gate currents of 5 mu A/mm in pinch-off. Unity gain cutoff frequencies, f(t) and f(max), were measured to be 9 and 32 GHz, respectively.
C1 [Deen, D. A.; Binari, S. C.; Storm, D. F.; Katzer, D. S.; Roussos, J. A.] USN, Res Lab, Microelect Div, Washington, DC 20375 USA.
[Hackley, J. C.; Gougousi, T.] Univ Maryland Baltimore Cty, Dept Phys, Baltimore, MD 21250 USA.
RP Deen, DA (reprint author), USN, Res Lab, Microelect Div, Washington, DC 20375 USA.
EM ddeen@ccs.nrl.navy.mil
RI Katzer, D. Scott/N-7841-2013; Gougousi, Theodosia/C-8156-2014
NR 9
TC 12
Z9 12
U1 1
U2 14
PU INST ENGINEERING TECHNOLOGY-IET
PI HERTFORD
PA MICHAEL FARADAY HOUSE SIX HILLS WAY STEVENAGE, HERTFORD SG1 2AY, ENGLAND
SN 0013-5194
J9 ELECTRON LETT
JI Electron. Lett.
PD APR 9
PY 2009
VL 45
IS 8
BP 423
EP U57
DI 10.1049/el.2009.3688
PG 2
WC Engineering, Electrical & Electronic
SC Engineering
GA 433VO
UT WOS:000265234100026
ER
PT J
AU Lau, KC
Dunlap, BI
AF Lau, Kah Chun
Dunlap, Brett I.
TI Lattice dielectric and thermodynamic properties of yttria stabilized
zirconia solids
SO JOURNAL OF PHYSICS-CONDENSED MATTER
LA English
DT Article; Proceedings Paper
CT International Conference on Nanoscience and Nanotechnology
CY FEB 25-29, 2008
CL Melbourne, AUSTRALIA
SP Australian Res Council, Australian Nanotechnol Network
ID FUNCTIONAL PERTURBATION-THEORY; THIN-FILMS; HEAT-CAPACITY; EFFECTIVE
CHARGES; LOW-TEMPERATURE; ALPHA-QUARTZ; AB-INITIO; 1ST-PRINCIPLES;
MODEL; PERMITTIVITY
AB A study of lattice dielectric and thermodynamic properties of yttria stabilized zirconia (YSZ) crystals as a function of yttria concentration is reported. This study is based on density functional perturbation theory, using ABINIT. Within the local density approximation and the harmonic approximation, we find excellent agreement between calculated and low temperature experimental specific heat and dielectric constants. From the variation of the specific heat of YSZ with the yttria composition, we propose a simple additivity rule that estimates the dependence of the specific heat of YSZ on the yttria concentration, whereas for the dielectric constants of YSZ, the values are bounded by the dielectric constants of cubic and amorphous zirconia.
C1 [Lau, Kah Chun] George Washington Univ, Dept Chem, Washington, DC 20052 USA.
[Dunlap, Brett I.] Naval Res Lab, Washington, DC 20375 USA.
RP Lau, KC (reprint author), George Washington Univ, Dept Chem, Washington, DC 20052 USA.
EM kah.lau.ctr.my@nrl.navy.mil
RI Lau, Kah Chun/A-9348-2013;
OI Lau, Kah Chun/0000-0002-4925-3397; Dunlap, Brett/0000-0003-1356-6559
NR 41
TC 14
Z9 14
U1 1
U2 8
PU IOP PUBLISHING LTD
PI BRISTOL
PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND
SN 0953-8984
J9 J PHYS-CONDENS MAT
JI J. Phys.-Condes. Matter
PD APR 8
PY 2009
VL 21
IS 14
AR 145402
DI 10.1088/0953-8984/21/14/145402
PG 6
WC Physics, Condensed Matter
SC Physics
GA 420VD
UT WOS:000264316400020
PM 21825333
ER
PT J
AU Fisher, JAN
Susumu, K
Therien, MJ
Yodh, AG
AF Fisher, Jonathan A. N.
Susumu, Kimihiro
Therien, Michael J.
Yodh, Arjun G.
TI One- and two-photon absorption of highly conjugated multiporphyrin
systems in the two-photon Soret transition region
SO JOURNAL OF CHEMICAL PHYSICS
LA English
DT Article
DE fluorescence; molecular configurations; molecule-photon collisions;
organic compounds; two-photon processes; zinc compounds
ID INFRARED-EMISSIVE POLYMERSOMES; NONLINEAR-OPTICAL RESPONSE; EXCITATION
CROSS-SECTIONS; EXCITED-STATE; PORPHYRIN OLIGOMERS; PHOTOBLEACHING
KINETICS; FLUORESCENCE MICROSCOPY; RESONANCE ENHANCEMENT; CHROMOPHORES;
SPECTROSCOPY
AB This study presents a detailed investigation of near-infrared one- and two-photon absorption (TPA) in a series of highly conjugated (porphinato)zinc(II) compounds. The chromophores interrogated include meso-to-meso ethyne-bridged (porphinato)zinc(II) oligomers (PZn(n) species), (porphinato)zinc(II)-spacer-(porphinato)zinc(II) (PZn-Sp-PZn) complexes, PZn(n) structures featuring terminal electron-releasing and -withdrawing substituents, related conjugated arrays in which electron-rich and -poor PZn units alternate, and benchmark PZn monomers. Broadband TPA cross-section measurements were performed ratiometrically using fluorescein as a reference. Superficially, the measurements indicate very large TPA cross-sections (up to similar to 10(4) GM; 1 GM=1x10(-50) cm(4) s photon(-1)) in the two-photon Soret (or B-band) resonance region. However, a more careful analysis of fluorescence as a function of incident photon flux suggests that significant one-photon absorption is present in the same spectral region for all compounds in the series. TPA cross-sections are extracted for the first time for some of these compounds using a model that includes both one-photon absorption and TPA contributions. Resultant TPA cross-sections are similar to 10 GM. The findings suggest that large TPA cross-sections reported in the Soret resonance region of similar compounds might contain significant contributions from one-photon absorption processes.
C1 [Fisher, Jonathan A. N.] Rockefeller Univ, Lab Sensory Neurosci, New York, NY 10065 USA.
[Fisher, Jonathan A. N.; Yodh, Arjun G.] Univ Penn, Dept Phys & Astron, Philadelphia, PA 19104 USA.
[Susumu, Kimihiro] Univ Penn, Dept Chem, Philadelphia, PA 19104 USA.
[Susumu, Kimihiro] USN, Div Opt Sci, Res Lab, Washington, DC 20375 USA.
[Therien, Michael J.] Duke Univ, Dept Chem, Durham, NC 27708 USA.
RP Fisher, JAN (reprint author), Rockefeller Univ, Lab Sensory Neurosci, New York, NY 10065 USA.
EM jfisher@rockefeller.edu
FU NSF MRSEC [DMR05-20020, DMR-0804881, DMR-00-79909]; David and Lucille
Packard Foundation [2000-01737]; National Institutes of Health
[R01CA115229]; Bristol-Myers Squibb Postdoctoral Fellowship in Basic
Neurosciences at The Rockefeller University
FX The authors thank Dr. Thomas Troxler and Dr. Kijoon Lee for technical
assistance and Dr. P. Peter Ghoroghchian for useful discussions. This
work was supported by NSF MRSEC Grant No. DMR05-20020 and partially by
Grant Nos. DMR-0804881 (A.G.Y.) and DMR-00-79909 (M.J.T.), by the David
and Lucille Packard Foundation Grant No. 2000-01737 (A.G.Y.), by the
National Institutes of Health Grant No. R01CA115229 (M.J.T.) and by a
Bristol-Myers Squibb Postdoctoral Fellowship in Basic Neurosciences at
The Rockefeller University (J.A.N.F.)
NR 47
TC 24
Z9 25
U1 1
U2 16
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 7
PY 2009
VL 130
IS 13
AR 134506
DI 10.1063/1.3089795
PG 8
WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical
SC Chemistry; Physics
GA 431HW
UT WOS:000265053200041
PM 19355750
ER
PT J
AU Yue, GK
Fromm, MD
Shettle, EP
AF Yue, Glenn K.
Fromm, Michael D.
Shettle, Eric P.
TI Intercomparison of aerosol extinction measured by Stratospheric Aerosol
and Gas Experiment (SAGE) II and III
SO JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
LA English
DT Article
ID POAM-III; SATELLITE EXPERIMENTS; INTEGRAL PROPERTIES; SAM-II; SIMULATED
EXTINCTION; SIZE DISTRIBUTIONS; POLAR OZONE; VALIDATION; INSTRUMENT;
RETRIEVAL
AB Stratospheric Aerosol and Gas Experiment (SAGE) II and SAGE III are two satellite experiments designed to monitor aerosol extinction and the concentration of trace gases in the atmosphere using the solar and/or lunar occultation technique. While SAGE III used nine aerosol channels, four of them were centered at wavelengths very close or equal to the four aerosol channels used by SAGE II. Since both satellites conducted measurements between 2002 and 2005, there are comparison opportunities when their measurement locations on the same day are nearly coincident. In this study, the coincidence events are identified, and the aerosol extinction coefficients, color ratios (ratio of the extinction at two wavelengths), and optical depths measured by both satellites are compared. It is found that in the main stratospheric aerosol layer, between about 18 and 26 km, the differences of extinction coefficients are generally within their measurement uncertainties and are less than about 30%. The discrepancy between the wavelength dependence of the aerosol extinction coefficient, color ratio, and optical depth measured by SAGE II and SAGE III is also discussed. In the main stratospheric aerosol layer, the SAGE III mode radius deduced from the color ratio is about 20 to 30% less than the SAGE II mode radius. Wavelength dependence biases of the aerosol extinction coefficient evident in prior releases of SAGE III data persist in version 4.00.
C1 [Yue, Glenn K.] NASA, Langley Res Ctr, Hampton, VA 23681 USA.
[Fromm, Michael D.; Shettle, Eric P.] USN, Res Lab, Washington, DC 20375 USA.
RP Yue, GK (reprint author), NASA, Langley Res Ctr, MS 475,100 NASA Rd, Hampton, VA 23681 USA.
EM glenn.k.yue@nasa.gov
RI Fromm, Michael/F-4639-2010
FU NASA Office of Earth Science; NRL internal funding (from the Office of
Naval Research)
FX M. D. F. and E. P. S. were supported in part by a grant from the NASA
Office of Earth Science and in part by NRL internal funding (from the
Office of Naval Research).
NR 25
TC 1
Z9 1
U1 0
U2 1
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 2169-897X
J9 J GEOPHYS RES-ATMOS
JI J. Geophys. Res.-Atmos.
PD APR 4
PY 2009
VL 114
AR D07205
DI 10.1029/2008JD010452
PG 10
WC Meteorology & Atmospheric Sciences
SC Meteorology & Atmospheric Sciences
GA 428QE
UT WOS:000264863100002
ER
PT J
AU Kumpaty, HJ
Van Linn, ML
Kabir, MS
Forsterling, FH
Deschamps, JR
Cook, JA
AF Kumpaty, Hephzibah J.
Van Linn, Michael L.
Kabir, M. Shahjahan
Foersterling, F. Holger
Deschamps, Jeffrey R.
Cook, James A.
TI Study of the Cis to Trans Isomerization of 1-Phenyl-2,3-disubstituted
Tetrahydro-beta-carbolines at C(1). Evidence for the
Carbocation-Mediated Mechanism
SO JOURNAL OF ORGANIC CHEMISTRY
LA English
DT Article
ID PICTET-SPENGLER REACTION; ENANTIOSPECIFIC TOTAL-SYNTHESIS;
STEREOCONTROLLED TOTAL-SYNTHESIS; STEREOSPECIFIC TOTAL-SYNTHESIS;
AJMALINE-RELATED ALKALOIDS; INDOLE ALKALOIDS; GENERAL-APPROACH; WELL;
ALSTONERINE; SCISSION
AB The present study was undertaken to shed light on the mechanism of the epimerization of cis-1,2,3-trisubstituted tetrahydro-beta-carbolines into the trans isomers via a potential carbocationic intermediate at C(1). In order to study the pathway involved in C(1)-N(2) bond cleavage, the electronic character of the carbon atom at C-I was altered by substitution of electron-rich and electron-poor phenyl rings at this position. This provided direct evidence of the effects of charge at the proposed site of the carbocationic intermediate. In this regard, a diverse set of 1-(phenyl substituted)-2-benzyl-3-ethoxycarbonyl-1,2,3,4-tetrahydro-beta-carbolines has been synthesized via the Pictet-Spengler reaction by condensation of L-tryptophan derivatives with electron-poor and electron-rich aromatic aldehydes. The epimers involved in the isomerization mechanism were investigated by dynamic (1)H and (13)C NMR spectroscopic and X-ray crystallographic analyses. The kinetic studies, which involved conversion of cis diastercomers into their trans counterparts, were carried out in dilute TFA/CH(2)Cl(2). The 1-(4-methoxyphenyl) cis diastereomer epimerized at a much faster rate into the corresponding trans diastereomer than the related 1-(4-nitrophenyl) cis diastereomer epimerized. These observations provide support for the carbocationic intermediate in the C(1)-N(2) scission process. The understanding of this epimerization process is of importance when Pictet-Spengler reactions are carried out under acidic conditions during the synthesis of indole alkaloids.
C1 [Van Linn, Michael L.; Kabir, M. Shahjahan; Foersterling, F. Holger; Cook, James A.] Univ Wisconsin, Dept Chem & Biochem, Milwaukee, WI 53201 USA.
[Kumpaty, Hephzibah J.] Univ Wisconsin, Dept Chem, Whitewater, WI 53190 USA.
[Deschamps, Jeffrey R.] USN, Res Lab, Struct Matter Lab, Washington, DC 20375 USA.
RP Cook, JA (reprint author), Univ Wisconsin, Dept Chem & Biochem, Milwaukee, WI 53201 USA.
EM capncook@uwm.edu
OI Deschamps, Jeffrey/0000-0001-5845-0010
FU NIDA [Y1-DA6002]; UW-Whitewater; UW-Milwaukee; The Lynde and Harry
Bradley Foundation
FX We thank Mr. Frank Laib for providing mass spectroscopic data and
elemental analysis. X-ray crystallographic studies reported here were
supported by NIDA under contract Y1-DA6002. We thank UW-Whitewater for
providing the sabbatical support for H.J.K. and UW-Milwaukee and The
Lynde and Harry Bradley Foundation for financial support. This paper is
dedicated to Dr. Frank Ungemach and Mr. Joe Sandrin for their initial
efforts in this area.
NR 42
TC 18
Z9 18
U1 0
U2 12
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0022-3263
J9 J ORG CHEM
JI J. Org. Chem.
PD APR 3
PY 2009
VL 74
IS 7
BP 2771
EP 2779
DI 10.1021/jo8028168
PG 9
WC Chemistry, Organic
SC Chemistry
GA 425HK
UT WOS:000264627400017
PM 19275130
ER
PT J
AU Lock, EH
Walton, SG
Fernsler, RF
AF Lock, Evgeniya H.
Walton, Scott G.
Fernsler, Richard F.
TI Physio-Chemical Modifications of Polystyrene and Poly(propylene)
Surfaces by Electron Beam-Generated Plasmas Produced in Argon
SO PLASMA PROCESSES AND POLYMERS
LA English
DT Article
DE AFM; ellipsometry; plasma treatment; polystyrene; poly(propylene);
surface composition; surface energy; surface morphology; surface
roughness; XPS; water contact angle
ID GLASS-TRANSITION TEMPERATURE; POLYMER SURFACES; ENERGY-TRANSFER;
CHEMISTRY; ADHESION; FILM; POLYPROPYLENE
AB Pulsed, electron beam generated plasmas produced in argon were used to modify the surfaces of polystyrene and poly(propylene). The influence of plasma parameters including duty factor, plasma period and exposure time on the surface chemistry, energy and morphology was investigated. In these plasmas, the energy of ions striking the surfaces was modest (<= 5 eV) and comparable to the bond strength of most polymers. Despite the lack of reactive species in the background, a substantial modification in the chemical composition of the polymer surface occurred, leading to a significant increase in surface energy. These changes occurred without a significant increase in surface roughness, or loss of material due to etching. Indeed, the surface morphology of polystyrene was practically unchanged, whereas the surface of poly(propylene) became smoother with plasma exposure. Based on theoretical estimations, the ions play major role in the modification of polymers.
C1 [Lock, Evgeniya H.; Walton, Scott G.; Fernsler, Richard F.] USN, Res Lab, Div Plasma Phys, Washington, DC 20375 USA.
RP Lock, EH (reprint author), USN, Res Lab, Div Plasma Phys, 4555 Overlook Ave, Washington, DC 20375 USA.
EM evgeniya.lock@nrl.navy.mil
FU Office of Naval Research; National Research Council
FX This work was supported by the Office of Naval Research. The authors are
grateful to Greg Pribil from J. A. Woollam Co. who performed the glass
transition temperature measurements. EHL appreciates the support of the
National Research Council.
NR 33
TC 15
Z9 15
U1 1
U2 6
PU WILEY-V C H VERLAG GMBH
PI WEINHEIM
PA POSTFACH 101161, 69451 WEINHEIM, GERMANY
SN 1612-8850
EI 1612-8869
J9 PLASMA PROCESS POLYM
JI Plasma Process. Polym.
PD APR 3
PY 2009
VL 6
IS 4
BP 234
EP 245
DI 10.1002/ppap.200800122
PG 12
WC Physics, Applied; Physics, Fluids & Plasmas; Physics, Condensed Matter;
Polymer Science
SC Physics; Polymer Science
GA 435NR
UT WOS:000265351100003
ER
PT J
AU Basu, S
Basu, S
Huba, J
Krall, J
McDonald, SE
Makela, JJ
Miller, ES
Ray, S
Groves, K
AF Basu, Su.
Basu, S.
Huba, J.
Krall, J.
McDonald, S. E.
Makela, J. J.
Miller, E. S.
Ray, S.
Groves, K.
TI Day-to-day variability of the equatorial ionization anomaly and
scintillations at dusk observed by GUVI and modeling by SAMI3
SO JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
LA English
DT Article
ID TOTAL ELECTRON-CONTENT; ULTRAVIOLET IMAGER GUVI; LOW-LATITUDE
IONOSPHERE; PLASMA BUBBLES; SPREAD-F; PREREVERSAL ENHANCEMENT; REGION;
DRIFT; EVOLUTION; DYNAMICS
AB The day-to-day variability in ionospheric irregularity generation giving rise to equatorial scintillation has remained an unresolved issue over many decades. We take a fresh look at the problem utilizing the global imagery provided by the Global Ultraviolet Imager (GUVI) instrument on NASA's Thermosphere, Ionosphere, Mesosphere Energetics and Dynamics satellite. GUVI has been acquiring images of 135.6-nm emission in the Earth's ionosphere-thermosphere system since 2001. These GUVI disk images at dusk have been used to identify cases where the equatorial ionization anomaly (EIA) crests lie near the magnetic equator over a relatively narrow longitude range, so that the anomaly looks collapsed. A 16-month period of GUVI data collected during evening at solar maximum is used to study the morphology of these so-called collapses, since the EIA collapse is shown to be linked to the suppression of equatorial plasma bubbles and scintillations. In particular, we look at the June solstice, during which the Atlantic and Pacific show very different climatology and EIA collapses are most frequent in the GUVI data. On the other hand, EIA collapses are a relatively rare occurrence during the equinox period when scintillations are most prevalent globally. We obtained a few dramatic examples of day-to-day variability in EIA behavior and scintillations over India. The Sami3 is Also a Model of the Ionosphere (SAMI3) model was used to investigate the conditions during the evening collapse of the anomaly in the Indian longitude sector, where measurements of total electron content (TEC) and scintillations and estimates of the daytime vertical drifts and those at dusk were available. Results from SAMI3 show that the observed collapse of the anomaly at dusk can be simulated by a reversal of the upward vertical drift in midafternoon in agreement with the drift estimates from magnetometer observations. Such reversed vertical drifts at this time of the day are generally seen during counterelectrojet events. Introduction of neutral winds into SAMI3 better approximates the dusk behavior of TEC at low-latitude stations in India. This study reveals that the longitudinally confined EIA collapse may explain some of the differences in day-to-day variability of scintillations at different locations around the globe.
C1 [Basu, Su.] Boston Univ, Ctr Space Phys, Boston, MA 02215 USA.
[Basu, S.] Boston Coll, Inst Sci Res, Chestnut Hill, MA 02467 USA.
[Huba, J.; Krall, J.] USN, Res Lab, Div Plasma Phys, Washington, DC 20375 USA.
[McDonald, S. E.] USN, Res Lab, Div Space Sci, Washington, DC 20375 USA.
[Makela, J. J.; Miller, E. S.] Univ Illinois, Dept Elect & Comp Engn, Urbana, IL 61801 USA.
[Ray, S.] Univ Calcutta, Inst Radiophys & Elect, Kolkata 700009, W Bengal, India.
[Groves, K.] USAF, Res Lab, Hanscom AFB, Bedford, MA 01731 USA.
RP Basu, S (reprint author), Boston Univ, Ctr Space Phys, Boston, MA 02215 USA.
EM sunanda.basu.ctr@nrl.navy.mil
FU NASA; ONR [N00014-07-1-0217]; Air Force Research Laboratory
[F19628-02-C-0087, AFOSR task 2311AS]; Naval Research Laboratory
[N00173-05-G904]
FX This work was supported by NASA under its Living with a Star Program.
Sunanda Basu was also supported by ONR grant N00014-07-1-0217. The work
at Boston College was partially supported by Air Force Research
Laboratory contract F19628-02-C-0087 and AFOSR task 2311AS. Work at the
University of Illinois was supported under grant N00173-05-G904 from the
Naval Research Laboratory. Various colleagues kindly provided different
types of measurements: The GUVI team provided access to their FUV image
data, without which this paper would not have been possible. The
magnetometer data were from S. Alex, Indian Institute of Geomagnetism,
Mumbai. The Trivandrum ionosonde data were provided by S. Ravindran,
Vikram Sarabhai Space Center, Trivandrum. Assistance with the vertical
drift analysis was provided by A. Anghel of NOAA, Boulder, Colorado. The
DMSP in situ data were from F. Rich, now at MIT Lincoln Laboratory,
Lexington, Massachusetts. The Bangalore TEC data were obtained from the
IGS network.
NR 51
TC 27
Z9 27
U1 2
U2 5
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 2169-9380
EI 2169-9402
J9 J GEOPHYS RES-SPACE
JI J. Geophys. Res-Space Phys.
PD APR 2
PY 2009
VL 114
AR A04302
DI 10.1029/2008JA013899
PG 12
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 428RD
UT WOS:000264866000002
ER
PT J
AU McCluskey, DM
Smith, TN
Madasu, PK
Coumbe, CE
Mackey, MA
Fulmer, PA
Wynne, JH
Stevenson, S
Phillips, JP
AF McCluskey, D. Michelle
Smith, Tiffany N.
Madasu, Praveen K.
Coumbe, Curtis E.
Mackey, Mary A.
Fulmer, Preston A.
Wynne, James H.
Stevenson, Steven
Phillips, J. Paige
TI Evidence for Singlet-Oxygen Generation and Biocidal Activity in
Photoresponsive Metallic Nitride Fullerene-Polymer Adhesive Films
SO ACS APPLIED MATERIALS & INTERFACES
LA English
DT Article
DE singlet oxygen; polymer film; PSA; metallic nitride fullerene; adhesive;
fullerene; metallofullerene; MNF; Sc(3)N@C(80); antimicrobial; biocidal
ID POLYBUTADIENE-BLOCK-POLYSTYRENE; RUBBER-BASED ADHESIVES; ANTIBACTERIAL
ACTIVITY; WATER SUSPENSIONS; SOLAR-CELLS; IN-VITRO; DERIVATIVES; C-60;
CHEMISTRY; PRESSURE
AB The adhesive properties, as measured by bulk tack analysis, are found to decrease in blends of isomerically pure Sc(3)N@I(h)-C(80) metallic nitride fullerene (MNF) and polystyrene-block-polyisoprene-block-polystyrene (SIS) copolymer pressure-sensitive adhesive under white light irradiation in air. The reduction of tack is attributed to the in situ generation Of (1)O(2) and subsequent photooxidative cross-linking of the adhesive film. Comparisons are drawn to classical fullerenes C(60) and C(70) for this process. This work represents the first demonstration of (1)O(2) generating ability in the general class of MNFs (M(3)N@C(80)). Additional support is provided for the sensitizing ability Of Sc(3)N@I(h)-C(80) through the successful photooxygenation of 2-methyl-2-butene to its allylic hydroperoxides in benzene-d(6) under irradiation at 420 nm, a process that occurs at a rate comparable to that Of C(60). Photooxygenation of 2-methyl-2-butene is found to be influenced by the fullerene sensitizer concentration and O(2) flow rate. Molar extinction coefficients are reported for Sc(3)N@I(h)-C(80) at 420 and 536 nm. Evaluation of the potential antimicrobial activity of films prepared in this study stemming from the in situ generation of (1)O(2) led to an observed 1 log kill for select Gram-positive and Gram-negative bacteria.
C1 [McCluskey, D. Michelle; Smith, Tiffany N.; Madasu, Praveen K.; Coumbe, Curtis E.; Mackey, Mary A.; Stevenson, Steven; Phillips, J. Paige] Univ So Mississippi, Dept Chem & Biochem, Hattiesburg, MS 39406 USA.
[Fulmer, Preston A.; Wynne, James H.] USN, Res Lab, Div Chem, Washington, DC 20375 USA.
RP Phillips, JP (reprint author), Univ So Mississippi, Dept Chem & Biochem, Hattiesburg, MS 39406 USA.
EM Janice.Phillips@usm.edu
RI Fulmer, Preston/L-7702-2014;
OI Fulmer, Preston/0000-0002-2981-576X; Stevenson,
Steven/0000-0003-3576-4062
FU NSF [CHE-0847481, CHE-0547988]; NIH [R15AG028408]; Office of Naval
Research; C.E.C. [P200A060323]
FX J.p.p. thanks the NSF (Grant CHE-0847481) and the NIH (Grant
R15AG028408; National Institute on Aging). Additional support from the
Office of Naval Research (J.H.W.) and NSF (Grant CHE-0547988 to S.S.) is
also acknowledged. Graduate Student Fellowships for M.A.M. (NSF GRFP)
and C.E.C. (Department of Education, GAANN No. P200A060323) are also
acknowledged.
NR 48
TC 27
Z9 27
U1 3
U2 22
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1944-8244
J9 ACS APPL MATER INTER
JI ACS Appl. Mater. Interfaces
PD APR
PY 2009
VL 1
IS 4
BP 882
EP 887
DI 10.1021/am900008v
PG 6
WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary
SC Science & Technology - Other Topics; Materials Science
GA 464VM
UT WOS:000267536100020
PM 20161355
ER
PT J
AU Benanzer, TW
Grandhi, RV
Krol, WP
AF Benanzer, Todd W.
Grandhi, Ramana V.
Krol, William P.
TI Reliability-based optimization of design variance to identify critical
tolerances
SO ADVANCES IN ENGINEERING SOFTWARE
LA English
DT Article
DE RBDO; Cost modeling; UUV
ID FINITE-ELEMENT METHOD; STRUCTURAL RELIABILITY; COST; VARIABLES; CODE
AB Reliability-based design optimization (RBDO) is a topic of interest for research in both academia and industry. RBDO typically involves adjusting the mean values of the design variables while fixing the spread parameters, often measured as variance, in order to accomplish a given objective within the stated constraints. This paper proposes an alternate way to meet given design criteria by fixing the mean values of the statistical inputs and allowing the spread parameters to become design variables. To do this, product cost models are proposed in terms of statistical variables. By performing this type of optimization, the design changes are kept to a minimum, and the focus is instead shifted to variance control. An initial study is performed on a three-bar truss subject to static loading with material variability. A more complex example is performed involving the cost minimization of an unmanned undersea vehicle subjected to hydrostatic buckling. (C) 2008 Elsevier Ltd. All rights reserved.
C1 [Benanzer, Todd W.; Grandhi, Ramana V.] Wright State Univ, Russ Engn Ctr 209, Dayton, OH 45435 USA.
[Krol, William P.] USN, Undersea Warfare Ctr, Newport, RI 02841 USA.
RP Benanzer, TW (reprint author), Wright State Univ, Russ Engn Ctr 209, 3640 Colonel Glenn Hwy, Dayton, OH 45435 USA.
EM benanzer.3@wright.edu; ramana.grandhi@wright.edu;
KrolWP@Npt.NUWC.Navy.Mil
FU Weapons Multidisciplinary Systems Design and Optimization (MSDO)
University/Laboratory Initiative (ULI) of the Office of Naval Research
[N00014-06-WX-2-0576]
FX This work was performed in coordination with the Weapons
Multidisciplinary Systems Design and Optimization (MSDO)
University/Laboratory Initiative (ULI) of the Office of Naval Research
under Contract No. N00014-06-WX-2-0576.
NR 24
TC 5
Z9 5
U1 1
U2 8
PU ELSEVIER SCI LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
SN 0965-9978
J9 ADV ENG SOFTW
JI Adv. Eng. Softw.
PD APR
PY 2009
VL 40
IS 4
BP 305
EP 311
DI 10.1016/j.advengsoft.2008.04.011
PG 7
WC Computer Science, Interdisciplinary Applications; Computer Science,
Software Engineering; Engineering, Multidisciplinary
SC Computer Science; Engineering
GA 398NM
UT WOS:000262738800010
ER
PT J
AU Demoulin, P
Pariat, E
AF Demoulin, P.
Pariat, E.
TI Modelling and observations of photospheric magnetic helicity
SO ADVANCES IN SPACE RESEARCH
LA English
DT Article
DE Magnetic fields; Magnetic helicity; Magneto-hydrodynamic; Photosphere;
Corona; Coronal mass ejections
ID SOLAR ACTIVE REGIONS; LOCAL CORRELATION TRACKING; CORONAL MASS EJECTION;
MINIMUM ENERGY FIT; FLUX TUBES; INDUCTION EQUATION; VECTOR MAGNETOGRAMS;
INVERSE CASCADE; INJECTION; FIELDS
AB Mounting observational evidence of the emergence of twisted magnetic flux tubes through the photosphere have now been published. Such flux tubes, formed by the solar dynamo and transported through the convection zone, eventually reach the solar atmosphere. Their accumulation in the solar corona leads to flares and coronal mass ejections. Since reconnections occur during the evolution of the flux tubes, the concepts of twist and magnetic stress become inappropriate. Magnetic helicity, as a well preserved quantity, in particular in plasma with high magnetic Reynolds number, is a more suitable physical quantity to use, even if reconnection is involved.
Only recently, it has been realized that the flux of magnetic helicity can be derived from magnetogram time series. This paper reviews the advances made in measuring the helicity injection rate at the photospheric level, mostly in active regions. It relates the observations to our present theoretical understanding of the emergence process. Most of the helicity injection is found during magnetic flux emergence, whereas the effect of differential rotation is small, and the long-term evolution of active regions is still puzzling. The photospheric maps of the injection of magnetic helicity provide new spatial information about the basic properties of the link between the solar activity and its sub-photospheric roots. Finally, the newest techniques to measure photospheric flows arc reviewed. (C) 2008 COSPAR. Published by Elsevier Ltd. All rights reserved.
C1 [Demoulin, P.] Observ Paris, LESIA, CNRS, UMR 8109, F-92195 Meudon, France.
[Pariat, E.] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA.
[Pariat, E.] George Mason Univ, Coll Sci, Fairfax, VA 22030 USA.
[Pariat, E.] USN, Res Lab, Washington, DC 20375 USA.
RP Demoulin, P (reprint author), Observ Paris, LESIA, CNRS, UMR 8109, F-92195 Meudon, France.
EM Pascal.Demoulin@obspm.fr; epariat@helio.gsfc.nasa.gov
OI Demoulin, Pascal/0000-0001-8215-6532
NR 89
TC 46
Z9 46
U1 1
U2 4
PU ELSEVIER SCI LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
SN 0273-1177
J9 ADV SPACE RES
JI Adv. Space Res.
PD APR 1
PY 2009
VL 43
IS 7
BP 1013
EP 1031
DI 10.1016/j.asr.2008.12.004
PG 19
WC Astronomy & Astrophysics; Geosciences, Multidisciplinary; Meteorology &
Atmospheric Sciences
SC Astronomy & Astrophysics; Geology; Meteorology & Atmospheric Sciences
GA 430OW
UT WOS:000264999400001
ER
PT J
AU Nayak, G
Ferguson, M
Tribble, DR
Porter, CK
Rapena, R
Marchicelli, M
Decker, CF
AF Nayak, Gautam
Ferguson, Michael
Tribble, David R.
Porter, Chad K.
Rapena, Robert
Marchicelli, Marc
Decker, Catherine F.
TI Cardiac Diastolic Dysfunction Is Prevalent in HIV-Infected Patients
SO AIDS PATIENT CARE AND STDS
LA English
DT Article; Proceedings Paper
CT 45th Annual Meeting of the Infectious-Diseases-Society-of-America
CY OCT, 2007
CL San Diego, CA
SP Infect Dis Soc Amer
ID CORONARY-ARTERY-DISEASE; ANTIRETROVIRAL THERAPY; HEART-FAILURE;
MYOCARDIAL-INFARCTION; ASYMPTOMATIC PATIENTS; DOPPLER; RISK;
HYPERTENSION; ABNORMALITIES; POPULATION
AB Combination antiretroviral therapy (ART) has markedly improved survival in HIV-infected patients, but not without significant adverse effects including ART-associated dyslipdemia and insulin resistance, which may in part contribute to an increased risk of cardiovascular events. Other contributing factors to cardiovascular risk may include uncontrolled HIV replication, the effects of HIV and ART on vascular endothelium and inflammatory cytokines. Diastolic dysfunction may be an early sign of cardiovascular disease. Our objective was to determine the prevalence of diastolic dysfunction in HIV-infected patients without cardiovascular symptoms. We enrolled 91 subjects in a cross-sectional study of HIV-infected patients without cardiovascular symptoms between September 2004 and August 2005, to assess whether demographics, HIV-related factors, cardiac risk factors, and ART were associated with diastolic dysfunction. All subjects underwent two-dimensional transthoracic echocardiography with tissue Doppler imaging. Subjects were predominately male with a median age of 38 (interquartile range [IQR]: 33, 42) years and median ART duration 6.15 (IQR: 2.1, 8.4) years. Subjects had low Framingham risk scores. Diastolic dysfunction was observed in 34 patients (37%; 95% confidence interval [CI] 27.4, 48.1). Cardiac risk factors or poor prognostic indicators of AIDS progression were uncommon with no difference between subjects with or without diastolic dysfunction. A nonstatistically significant trend in increased rate of diastolic dysfunction was observed in patients receiving protease inhibitors 1 year or more, 44% versus 28%, respectively (univariate odds ratio 2.02, 95% CI 0.83 to 4.90). This was not observed with prolonged use of either non-nucleoside or nucleoside reverse transcriptase inhibitors. A high prevalence of diastolic dysfunction (37%) in a cohort of HIV-infected patients on ART at low risk for AIDS and cardiovascular disease was demonstrated.
C1 [Decker, Catherine F.] Natl Naval Med Ctr, Div Infect Dis, Dept Internal Med, Bethesda, MD 20889 USA.
[Tribble, David R.] Uniformed Serv Univ Hlth Sci, Bethesda, MD 20814 USA.
[Porter, Chad K.] USN, Med Res Ctr, Silver Spring, MD USA.
RP Decker, CF (reprint author), Natl Naval Med Ctr, Div Infect Dis, Dept Internal Med, 8901 Rockville Pike, Bethesda, MD 20889 USA.
EM Catherine.Decker@med.navy.mil
RI Porter, Chad/A-8026-2011
NR 34
TC 15
Z9 15
U1 1
U2 1
PU MARY ANN LIEBERT INC
PI NEW ROCHELLE
PA 140 HUGUENOT STREET, 3RD FL, NEW ROCHELLE, NY 10801 USA
SN 1087-2914
J9 AIDS PATIENT CARE ST
JI Aids Patient Care STDS
PD APR
PY 2009
VL 23
IS 4
BP 231
EP 238
DI 10.1089/apc.2008.0142
PG 8
WC Public, Environmental & Occupational Health; Infectious Diseases
SC Public, Environmental & Occupational Health; Infectious Diseases
GA 431TT
UT WOS:000265087600002
PM 19281430
ER
PT J
AU Moran, D
AF Moran, Daniel
TI Targeting Civilians in War
SO AMERICAN HISTORICAL REVIEW
LA English
DT Book Review
C1 [Moran, Daniel] Naval Postgrad Sch, Monterey, CA USA.
RP Moran, D (reprint author), Naval Postgrad Sch, Monterey, CA USA.
NR 1
TC 0
Z9 0
U1 0
U2 0
PU UNIV CHICAGO PRESS
PI CHICAGO
PA 1427 E 60TH ST, CHICAGO, IL 60637-2954 USA
SN 0002-8762
J9 AM HIST REV
JI Am. Hist. Rev.
PD APR
PY 2009
VL 114
IS 2
BP 425
EP 426
PG 2
WC History
SC History
GA 433UF
UT WOS:000265230600020
ER
PT J
AU Hawksworth, JS
Leeser, D
Jindal, RM
Falta, E
Tadaki, D
Elster, EA
AF Hawksworth, Jason S.
Leeser, David
Jindal, Rahul M.
Falta, Edward
Tadaki, Douglas
Elster, Eric A.
TI New directions for induction immunosuppression strategy in solid organ
transplantation
SO AMERICAN JOURNAL OF SURGERY
LA English
DT Review
DE Induction immunosuppression; Solid organ transplantation; Tolerance
ID REGULATORY T-CELLS; RENAL-ALLOGRAFT REJECTION; RANDOMIZED PROSPECTIVE
TRIAL; BONE-MARROW TRANSPLANTATION; ANTI-THYMOCYTE GLOBULIN;
CORTICOSTEROID-FREE IMMUNOSUPPRESSION; CADAVER KIDNEY-TRANSPLANTATION;
RABBIT ANTITHYMOCYTE GLOBULIN; PLASMACYTOID DENDRITIC CELLS; ACUTE
CELLULAR REJECTION
AB BACKGROUND: Solid organ transplant centers are increasingly using induction immunosuppression strategies. Induction immunosuppression involves the use of intense therapy at the time of transplantation with the goal of preventing acute rejection and ultimately inducing a tolerogenic state. The objective of this review is to examine specialized induction agents currently in clinical use and highlight novel therapeutics on the horizon for induction immunosuppression.
METHODS: A literature search using the PubMed and MEDLINE databases identified salient basic science and clinical research articles on induction immunosuppression for solid organ transplantation.
CONCLUSIONS: While Current induction immunosuppression agents have reduced the incidence of acute rejection. the goal of transplant tolerance has not been realized. Furthermore, the long-term allograft survival rate is not clearly, influenced by the practice of induction immunosuppression. New approaches to tolerance induction, Such as costimulatory-based therapy. mixed chimerism, and adoptive cellular transfer. hold promise for more effective induction immunosuppression in solid organ transplantation. Published by Elsevier Inc.
C1 [Leeser, David; Jindal, Rahul M.; Falta, Edward; Elster, Eric A.] Walter Reed Army Med Ctr, Organ Transplant Serv, Bethesda, MD USA.
[Hawksworth, Jason S.] Walter Reed Army Med Ctr, Dept Surg, Washington, DC 20307 USA.
[Leeser, David; Falta, Edward; Elster, Eric A.] Uniformed Serv Univ Hlth Sci, Dept Surg, Silver Spring, MD USA.
[Tadaki, Douglas; Elster, Eric A.] USN, Dept Regenerat Med, Med Res Ctr, Silver Spring, MD USA.
[Elster, Eric A.] Natl Naval Med Ctr, Dept Surg, Bethesda, MD USA.
RP Elster, EA (reprint author), Walter Reed Army Med Ctr, Organ Transplant Serv, Bethesda, MD USA.
EM eric.elster@med.navy.mil
NR 134
TC 20
Z9 27
U1 0
U2 1
PU EXCERPTA MEDICA INC-ELSEVIER SCIENCE INC
PI BRIDGEWATER
PA 685 ROUTE 202-206 STE 3, BRIDGEWATER, NJ 08807 USA
SN 0002-9610
J9 AM J SURG
JI Am. J. Surg.
PD APR
PY 2009
VL 197
IS 4
BP 515
EP 524
DI 10.1016/j.amjsurg.2008.04.025
PG 10
WC Surgery
SC Surgery
GA 430OY
UT WOS:000264999600016
PM 19249743
ER
PT J
AU Mutonga, DM
Pimentel, G
Muindi, J
Nzioka, C
Mutiso, J
Klena, JD
Morcos, M
Ogaro, T
Materu, S
Tetteh, C
Messonnier, NE
Breiman, RF
Feikin, DR
AF Mutonga, David M.
Pimentel, Guillermo
Muindi, Judith
Nzioka, Charles
Mutiso, Julius
Klena, John D.
Morcos, Myriam
Ogaro, Thomas
Materu, Sadiki
Tetteh, Christopher
Messonnier, Nancy E.
Breiman, Robert F.
Feikin, Daniel R.
TI Epidemiology and Risk Factors for Serogroup X Meningococcal Meningitis
during an Outbreak in Western Kenya, 2005-2006
SO AMERICAN JOURNAL OF TROPICAL MEDICINE AND HYGIENE
LA English
DT Article
ID REAL-TIME PCR; NEISSERIA-MENINGITIDIS; BACTERIAL-MENINGITIS; NORTHERN
GHANA; BURKINA-FASO; DISEASE; NIGER
AB The epidemiology of serogroup X meningococcal meningitis in Africa is unknown. During a serogroup X meningococcus outbreak in Kenya, case finding involved record review at health facilities and interviews with health workers and community leaders in West Pokot district. An age- and location-matched case-control study for risk factors was done. From December 2005 to April 2006, 82 suspect cases of meningitis were reported; the epidemic threshold was surpassed within two administrative divisions. Most (58%) cases were 5-24 years old; the case-fatality ratio was 21 %. Serogroup X meningococcus was the most common serogroup-5 (63 %) of eight isolates serogrouped. Living in the same compound as another case, preceding upper respiratory tract infection and cooking outside the house were significant risk factors for disease. Serogroup X meningococcus caused an outbreak with similar epidemiology and risk factors as other serogroups. Serogroup-specific laboratory-based surveillance for meningococcus in Africa to detect serogroup X disease should be enhanced.
C1 [Breiman, Robert F.; Feikin, Daniel R.] CDC, Unit 64112, KEMRI, APO, AE 09831 USA.
[Mutonga, David M.; Muindi, Judith; Tetteh, Christopher] CDC, KEMRI, Field Epidemiol & Lab Training Program, Nairobi, Kenya.
[Pimentel, Guillermo; Klena, John D.; Morcos, Myriam] USN, Res Program 3, Dis Surveillance Program, FPO, AE 09835 USA.
[Nzioka, Charles; Mutiso, Julius; Ogaro, Thomas] Kenya Minist Publ Hlth & Sanitat, Div Dis Surveillance & Response, Nairobi, Kenya.
[Materu, Sadiki] African Med & Res Fdn, Nairobi, Kenya.
[Messonnier, Nancy E.] Ctr Dis Control & Prevent, Div Bacterial Dis, Atlanta, GA 30329 USA.
USN, Med Res Program 3, Cairo, Egypt.
Minist Hlth, Div Dis Surveillance & Response, Nairobi, Kenya.
Ctr Dis Control & Prevent, Meningitis Branch, Atlanta, GA USA.
Ctr Dis Control & Prevent, Int Emerging Infect Program, Nairobi, Kenya.
RP Feikin, DR (reprint author), CDC, Unit 64112, KEMRI, APO, AE 09831 USA.
EM davidmutonga@yahoo.com; Guillermo.Pimentel@med.navy.mil;
judithmuindi@yahoo.com; KlenaJ@namru3.med.navy.mil;
MorcosM@namru3.med.navy.mil; sadikim@amrefke.org; TettehC@sa.cdc.gov;
nar5@cdc.gov; rbreiman@ke.cdc.gov; dfeikin@ke.cdc.gov
RI Valle, Ruben/A-7512-2013;
OI Pimentel, Guillermo/0000-0003-2464-1526
NR 32
TC 23
Z9 23
U1 0
U2 1
PU AMER SOC TROP MED & HYGIENE
PI MCLEAN
PA 8000 WESTPARK DR, STE 130, MCLEAN, VA 22101 USA
SN 0002-9637
J9 AM J TROP MED HYG
JI Am. J. Trop. Med. Hyg.
PD APR
PY 2009
VL 80
IS 4
BP 619
EP 624
PG 6
WC Public, Environmental & Occupational Health; Tropical Medicine
SC Public, Environmental & Occupational Health; Tropical Medicine
GA 432CK
UT WOS:000265110900025
PM 19346388
ER
PT J
AU Rocha, C
Morrison, AC
Forshey, BM
Blair, PJ
Olson, JG
Stancil, JD
Sihuincha, M
Scott, TW
Kochel, TJ
AF Rocha, Claudio
Morrison, Amy C.
Forshey, Brett M.
Blair, Patrick J.
Olson, James G.
Stancil, Jeffrey D.
Sihuincha, Moises
Scott, Thomas W.
Kochel, Tadeusz J.
TI Comparison of Two Active Surveillance Programs for the Detection of
Clinical Dengue Cases in Iquitos, Peru
SO AMERICAN JOURNAL OF TROPICAL MEDICINE AND HYGIENE
LA English
DT Article
ID PRIMARY-SCHOOL CHILDREN; AEDES-AEGYPTI DIPTERA; HEMORRHAGIC-FEVER;
VIRUS-INFECTIONS; DISEASE SEVERITY; KAMPHAENG PHET; DV INFECTION;
EPIDEMIOLOGY; THAILAND; VIREMIA
AB Endemic dengue transmission has been documented in the Amazonian city of Iquitos, Peru, since the early 1990s. To better understand the epidemiology of dengue transmission in Iquitos, we established multiple active surveillance systems to detect symptomatic infections. Here we compare the efficacy of distinct community-based (door to door) and school absenteeism-based febrile surveillance strategies in detecting active cases of dengue. Febrile episodes were detected by both systems with equal rapidity after disease onset. However, during the period that both programs were running simultaneously in 2004, a higher number of febrile cases in general (4.52/1.00 versus 1.64/100 person-years) and dengue cases specifically (2.35/100 versus 1.29/100 person-years) were detected in school-aged children through the community-based surveillance program. Similar results were obtained by direct comparison of 435 participants concurrently enrolled in both programs (P < 0.005). We conclude that, in Iquitos, community-based door-to-door surveillance is a more efficient and sensitive design for detecting active dengue cases than programs based on school absenteeism.
C1 [Rocha, Claudio; Forshey, Brett M.; Blair, Patrick J.; Olson, James G.; Stancil, Jeffrey D.; Kochel, Tadeusz J.] USN, Med Res Ctr Detachment, Washington, DC 20521 USA.
[Morrison, Amy C.; Scott, Thomas W.] Univ Calif Davis, Dept Entomol, Davis, CA 95616 USA.
[Sihuincha, Moises] Hosp Apoyo, DISA Loreto, Iquitos, Loreto, Peru.
USN, Med Res Ctr Detachment, Lima, Peru.
USN, Med Res Ctr Detachment, Iquitos, Peru.
RP Kochel, TJ (reprint author), 3230 Lima Pl, Washington, DC 20521 USA.
EM tad.kochel@med.navy.mil
RI Valle, Ruben/A-7512-2013
FU US Department of Defense Military Infectious Diseases Research Program
[62787_870_S_B0001]
FX This study was funded by the US Department of Defense Military
Infectious Diseases Research Program, Work Unit 62787_870_S_B0001.
NR 32
TC 19
Z9 19
U1 0
U2 3
PU AMER SOC TROP MED & HYGIENE
PI MCLEAN
PA 8000 WESTPARK DR, STE 130, MCLEAN, VA 22101 USA
SN 0002-9637
J9 AM J TROP MED HYG
JI Am. J. Trop. Med. Hyg.
PD APR
PY 2009
VL 80
IS 4
BP 656
EP 660
PG 5
WC Public, Environmental & Occupational Health; Tropical Medicine
SC Public, Environmental & Occupational Health; Tropical Medicine
GA 432CK
UT WOS:000265110900032
PM 19346395
ER
PT J
AU Michael, TS
AF Michael, T. S.
TI A Characterization of Permutation Matrices
SO AMERICAN MATHEMATICAL MONTHLY
LA English
DT Letter
C1 [Michael, T. S.] USN Acad, Annapolis, MD 21402 USA.
RP Michael, TS (reprint author), USN Acad, Annapolis, MD 21402 USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU MATHEMATICAL ASSOC AMER
PI WASHINGTON
PA 1529 18TH STREET NW, WASHINGTON, DC 20036 USA
SN 0002-9890
J9 AM MATH MON
JI Am. Math. Mon.
PD APR
PY 2009
VL 116
IS 4
BP 372
EP 372
PG 1
WC Mathematics
SC Mathematics
GA V16TT
UT WOS:000207892600015
ER
PT J
AU Provencher, RMT
Ghodadra, N
LeClere, L
Solomon, DJ
Romeo, AA
AF Provencher, R. Matthew T.
Ghodadra, Neil
LeClere, Lance
Solomon, Daniel J.
Romeo, Anthony A.
TI Anatomic Osteochondral Glenoid Reconstruction for Recurrent Glenohumeral
Instability With Glenoid Deficiency Using a Distal Tibia Allograft
SO ARTHROSCOPY-THE JOURNAL OF ARTHROSCOPIC AND RELATED SURGERY
LA English
DT Article
DE Glenoid bone loss; Shoulder instability; Inverted-pear glenoid; Shoulder
bone defects; Bone deficiency; Allograft; Osteoarticular; Osteochondral
ID ANTERIOR SHOULDER INSTABILITY; BONE LOSS; BANKART REPAIR; BRISTOW
PROCEDURE; DISLOCATION; DEFECTS; STABILIZATION; ARTHROSCOPY; STABILITY;
OUTCOMES
AB The treatment of glenoid bone loss in the setting of recurrent shoulder instability remains a challenge. This is because of the nonanatomic nature and resultant incongruous joint resulting from most bony augmentation procedures. We present a novel technique for the management of glenoid bone deficiency by using a fresh osteochondral distal tibial allograft. We have found that the distal tibia has excellent articular conformity to unmatched humeral heads, fits nearly anatomically on the distal two thirds of the glenoid, is composed of dense weight-bearing cortical and metaphyseal distal tibia bone, and provides for a cartilaginous surface for which the humeral head to articulate. This article describes the technique, initial results, and postoperative findings with the use of a distal tibia allograft (the lateral portion of the distal tibia) for the treatment of glenoid bone deficiency (mean loss of 30%) in a series of 3 patients.
C1 [Provencher, R. Matthew T.; LeClere, Lance; Solomon, Daniel J.] USN, Dept Orthopaed Surg, San Diego Med Ctr, San Diego, CA 92134 USA.
[Ghodadra, Neil; Romeo, Anthony A.] Rush Univ, Dept Orthopaed Surg, Div Shoulder Knee & Sports Surg, Chicago, IL 60612 USA.
RP Provencher, RMT (reprint author), USN, Dept Orthopaed Surg, San Diego Med Ctr, 34800 Bob Wilson Dr,Ste 112, San Diego, CA 92134 USA.
EM matthew.provencher@med.navy.mil
OI Romeo, Anthony/0000-0003-4848-3411
NR 37
TC 21
Z9 21
U1 0
U2 1
PU W B SAUNDERS CO-ELSEVIER INC
PI PHILADELPHIA
PA 1600 JOHN F KENNEDY BOULEVARD, STE 1800, PHILADELPHIA, PA 19103-2899 USA
SN 0749-8063
J9 ARTHROSCOPY
JI Arthroscopy
PD APR
PY 2009
VL 25
IS 4
BP 446
EP 452
DI 10.1016/j.arthro.2008.10.017
PG 7
WC Orthopedics; Surgery
SC Orthopedics; Surgery
GA 430HP
UT WOS:000264980500017
ER
PT J
AU Geller, AM
Mathieu, RD
Harris, HC
McClure, RD
AF Geller, Aaron M.
Mathieu, Robert D.
Harris, Hugh C.
McClure, Robert D.
TI WIYN OPEN CLUSTER STUDY. XXXVI. SPECTROSCOPIC BINARY ORBITS IN NGC 188
SO ASTRONOMICAL JOURNAL
LA English
DT Article
DE open clusters and associations: individual (NGC 188); binaries:
spectroscopic; blue stragglers
ID RADIAL-VELOCITIES; PRAESEPE CLUSTER; VARIABLE-STARS; NGC-188; EVOLUTION;
CATALOG; SYSTEMS; MULTIPLICITY; COMPANIONS; SEQUENCE
AB We present 98 spectroscopic binary orbits resulting from our ongoing radial velocity survey of the old (7 Gyr) open cluster NGC 188. All but 13 are high-probability cluster members based on both radial velocity and proper motion membership analyses. Fifteen of these member binaries are double lined. Our stellar sample spans a magnitude range of 10.8 <= V <= 16.5 (1.14-0.92 M(circle dot)) and extends spatially to 17 pc (similar to 13 core radii). All of our binary orbits have periods ranging from a few days to on the order of 103 days, and thus are hard binaries that dynamically power the cluster. For each binary, we present the orbital solutions and place constraints on the component masses. Additionally, we discuss a few binaries of note from our sample, identifying a likely blue straggler-blue straggler binary system (7782), a double-lined binary with a secondary star which is underluminous for its mass (5080), two potential eclipsing binaries (4705 and 5762), and two binaries which are likely members of a quadruple system (5015a and 5015b).
C1 [Geller, Aaron M.; Mathieu, Robert D.] Univ Wisconsin, Dept Astron, Madison, WI 53706 USA.
[Harris, Hugh C.] USN Observ, Flagstaff, AZ 86001 USA.
[McClure, Robert D.] Natl Res Council Canada, Herzberg Inst Astrophys, Dominion Astrophys Observ, Victoria, BC V9E 2E7, Canada.
RP Geller, AM (reprint author), Univ Wisconsin, Dept Astron, Madison, WI 53706 USA.
NR 36
TC 24
Z9 24
U1 0
U2 1
PU IOP PUBLISHING LTD
PI BRISTOL
PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND
SN 0004-6256
J9 ASTRON J
JI Astron. J.
PD APR
PY 2009
VL 137
IS 4
BP 3743
EP 3760
DI 10.1088/0004-6256/137/4/3743
PG 18
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 417AF
UT WOS:000264046100002
ER
PT J
AU Jao, WC
Mason, BD
Hartkopf, WI
Henry, TJ
Ramos, SN
AF Jao, Wei-Chun
Mason, Brian D.
Hartkopf, William I.
Henry, Todd J.
Ramos, Stephanie N.
TI COOL SUBDWARF INVESTIGATIONS. II. MULTIPLICITY
SO ASTRONOMICAL JOURNAL
LA English
DT Article
DE binaries: close; instrumentation: high angular resolution; stars:
late-type; subdwarfs; techniques: interferometric
ID PROPER-MOTION STARS; ICCD SPECKLE OBSERVATIONS; LINED SPECTROSCOPIC
BINARIES; M TELESCOPE PROGRAM; SOLAR NEIGHBORHOOD; METAL-POOR; M-DWARFS;
RADIAL-VELOCITIES; SYSTEMATIC SEARCH; ORBITAL SOLUTIONS
AB Cool subdwarfs of types K and M are the fainter counterparts of cool main-sequence dwarfs that dominate the Galactic population. In this paper, we present the results of an optical speckle survey of 62 confirmed cool subdwarf systems within 60 pc. We have resolved two new companions and confirmed two previously known companions with separations 0 ''.13-3 ''.29. After including previously known wide companions and all known spectroscopic binaries, we determine the multiplicity rate of cool subdwarfs to be 26% +/- 6%, which is somewhat lower than comparable main-sequence stars that have a multiplicity rate of 37% +/- 5%. We find that only 3% of the cool subdwarfs surveyed have companions within 10 AU, 3% have companions between 10 and 100 AU, and 14% have companions beyond 100 AU. The other 6% of cool subdwarfs are spectroscopic binaries. This is very different from K/M dwarfs that have most companions (13%) at separations closer than 10 AU. However, because a search for close binaries among a large sample of nearby cool subdwarfs remains elusive, it is not yet settled whether or not the multiplicity rates are significantly different. Nonetheless, several different observational results and theories pointing to a possible dearth of subdwarf multiples are discussed.
C1 [Jao, Wei-Chun; Henry, Todd J.; Ramos, Stephanie N.] Georgia State Univ, Dept Phys & Astron, Atlanta, GA 30302 USA.
[Mason, Brian D.; Hartkopf, William I.] USN Observ, Washington, DC 20392 USA.
RP Jao, WC (reprint author), Georgia State Univ, Dept Phys & Astron, Atlanta, GA 30302 USA.
EM jao@chara.gsu.edu; bdm@usno.navy.mil; wih@usno.navy.mil;
thenry@chara.gsu.edu; sramos1@student.gsu.edu
FU NASA's Space Interferometry Mission; National Science Foundation
[AST-0507711]; GSU; NSF
FX This work has been supported at GSU by NASA's Space Interferometry
Mission, the National Science Foundation (NSF, grant AST-0507711), and
GSU. This research has made use of the SIMBAD database, operated at CDS,
Strasbourg, France. This work also has used data products from the Two
Micron All Sky Survey, which is a joint project of the University of
Massachusetts and the Infrared Processing and Analysis Center at
California Institute of Technology funded by NASA and the NSF.
NR 51
TC 23
Z9 23
U1 0
U2 1
PU IOP PUBLISHING LTD
PI BRISTOL
PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND
SN 0004-6256
J9 ASTRON J
JI Astron. J.
PD APR
PY 2009
VL 137
IS 4
BP 3800
EP 3808
DI 10.1088/0004-6256/137/4/3800
PG 9
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 417AF
UT WOS:000264046100006
ER
PT J
AU Pinto, R
Grappin, R
Wang, YM
Leorat, J
AF Pinto, R.
Grappin, R.
Wang, Y. -M.
Leorat, J.
TI Time-dependent hydrodynamical simulations of slow solar wind, coronal
inflows, and polar plumes
SO ASTRONOMY & ASTROPHYSICS
LA English
DT Article
DE interplanetary medium; solar wind; Sun: corona; Sun: magnetic fields
ID FLUX-TUBE DIVERGENCE; MAGNETIC-FIELD; PREDICTION; STREAMER; SPEED;
WAVES; FLOW
AB Aims. We explore the effects of varying the areal expansion rate and coronal heating function on the solar wind flow.
Methods. We use a one-dimensional, time-dependent hydrodynamical code. The computational domain extends from near the photosphere, where nonreflecting boundary conditions are applied, to 30 R(circle dot), and includes a transition region where heat conduction and radiative losses dominate.
Results. We confirm that the observed inverse relationship between asymptotic wind speed and expansion factor is obtained if the coronal heating rate is a function of the local magnetic field strength. We show that inflows can be generated by suddenly increasing the rate of flux-tube expansion and suggest that this process may be involved in the closing-down of flux at coronal hole boundaries.
We also simulate the formation and decay of a polar plume, by including an additional, time-dependent heating source near the base of the flux tube.
C1 [Pinto, R.; Grappin, R.; Leorat, J.] Observ Paris, LUTH, CNRS, F-92195 Meudon, France.
[Wang, Y. -M.] USN, Res Lab, Div Space Sci, Washington, DC 20375 USA.
RP Pinto, R (reprint author), Observ Paris, LUTH, CNRS, F-92195 Meudon, France.
EM rui.pinto@obspm.fr; yi.wang@nrl.navy.mil
FU CNRS; NASA; Office of Naval Research
FX This work was supported by CNRS, NASA, and the Office of Naval Research.
NR 25
TC 22
Z9 22
U1 0
U2 0
PU EDP SCIENCES S A
PI LES ULIS CEDEX A
PA 17, AVE DU HOGGAR, PA COURTABOEUF, BP 112, F-91944 LES ULIS CEDEX A,
FRANCE
SN 0004-6361
J9 ASTRON ASTROPHYS
JI Astron. Astrophys.
PD APR
PY 2009
VL 497
IS 2
BP 537
EP 543
DI 10.1051/0004-6361/200811183
PG 7
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 431XE
UT WOS:000265097300025
ER
PT J
AU Wood, BE
Howard, RA
Plunkett, SP
Socker, DG
AF Wood, B. E.
Howard, R. A.
Plunkett, S. P.
Socker, D. G.
TI COMPREHENSIVE OBSERVATIONS OF A SOLAR MINIMUM CORONAL MASS EJECTION WITH
THE SOLAR TERRESTRIAL RELATIONS OBSERVATORY
SO ASTROPHYSICAL JOURNAL
LA English
DT Article
DE interplanetary medium; Sun: activity; Sun: coronal mass ejections
(CMEs); solar wind
ID IMAGER SMEI; EARTH; MISSION; PLASMA; SECCHI
AB We perform the first kinematic analysis of a coronal mass ejection (CME) observed by both imaging and in situ instruments on board the Solar Terrestrial Relations Observatory (STEREO). Launched on 2008 February 4, the CME is tracked continuously from initiation to 1 AU using the imagers on both STEREO spacecraft, and is then detected by the particle and field detectors on board STEREO-B on February 7. The CME is also detected in situ by the Advanced Composition Explorer and Solar and Heliospheric Observatory at Earth's L1 Lagrangian point. This event provides a good example of just how different the same event can look when viewed from different perspectives. We also demonstrate many ways in which the comprehensive and continuous coverage of this CME by STEREO improves confidence in our assessment of its kinematic behavior, with potential ramifications for space weather forecasting. The observations provide several lines of evidence in favor of the observable part of the CME being narrow in angular extent, a determination crucial for deciding how best to convert observed CME elongation angles from Sun-center to actual Sun-center distances.
C1 [Wood, B. E.; Howard, R. A.; Plunkett, S. P.; Socker, D. G.] USN, Res Lab, Div Space Sci, Washington, DC 20375 USA.
RP Wood, BE (reprint author), USN, Res Lab, Div Space Sci, Washington, DC 20375 USA.
EM brian.wood@nrl.navy.mil
FU NASA [NAS5-00132, NAS5-00133]; USAF Space Test Program; ONR
FX We thank Neil Sheeley and Peter Schroeder for helpful discussions and
assistance in this project. The STEREO/SECCHI data are produced by a
consortium of NRL (US), LMSAL (US), NASA/GSFC (US), RAL (UK), UBHAM
(UK), MPS (Germany), CSL (Belgium), IOTA (France), and IAS (France). In
addition to funding by NASA, NRL also received support from the USAF
Space Test Program and ONR. In addition to SECCHI, this work has also
made use of data provided by the STEREO IMPACT and PLASTIC teams,
supported by NASA contracts NAS5-00132 and NAS5-00133. We have also made
use of data provided by the CELIAS/MTOF experiment on SOHO, which is a
joint ESA and NASA mission. We thank the ACE SWEPAM and MAG instrument
teams and the ACE Science Center for providing the ACE data.
NR 24
TC 27
Z9 28
U1 0
U2 2
PU IOP PUBLISHING LTD
PI BRISTOL
PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND
SN 0004-637X
J9 ASTROPHYS J
JI Astrophys. J.
PD APR 1
PY 2009
VL 694
IS 2
BP 707
EP 717
DI 10.1088/0004-637X/694/2/707
PG 11
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 424AW
UT WOS:000264538900001
ER
PT J
AU Tripathi, D
Mason, HE
Dwivedi, BN
Del Zanna, G
Young, PR
AF Tripathi, Durgesh
Mason, Helen E.
Dwivedi, Bhola N.
Del Zanna, Giulio
Young, Peter R.
TI ACTIVE REGION LOOPS: HINODE/EXTREME-ULTRAVIOLET IMAGING SPECTROMETER
OBSERVATIONS
SO ASTROPHYSICAL JOURNAL
LA English
DT Article
DE Sun: activity; Sun: atmosphere; Sun: corona; Sun: fundamental
parameters; Sun: transition region; Sun: UV radiation
ID X-RAY TELESCOPE; 1 MK LOOPS; EMISSION-LINES; CORONAL LOOPS; FE-XII;
SPECTROSCOPIC DIAGNOSTICS; TRANSITION REGION; DENSITY STRUCTURE;
MAGNETIC-FIELDS; ATOMIC DATABASE
AB We have carried out a study of active region loops using observations from the Extreme-ultraviolet Imaging Spectrometer (EIS) on board Hinode using 1 '' raster data for an active region observed on 2007 May 19. We find that active region structures which are clearly discernible in cooler lines (approximate to 1 MK) become "fuzzy" at higher temperatures (approximate to 2 MK). The active region was comprised of redshifted emissions (downflows) in the core and blueshifted emissions (upflows) at the boundary. The flow velocities estimated in the two regions located near the footpoints of coronal loop showed redshifted emission at transition region temperature and blueshifted emission at coronal temperature. The upflow speed in these regions increased with temperature. For more detailed study we selected one particular well- defined loop. Downward flows are detected along the coronal loop, being stronger in lower- temperature lines (rising up to 60 km s(-1) near the footpoint). The downflow was localized toward the footpoint in transition region lines (Si vii) and toward the loop top in high- temperature line (Fe xv). By carefully accounting for the background emission we found that the loop structure was close to isothermal for each position along the loop, with the temperature rising from around 0.8 MK to 1.5 MK from the close to the base to higher up toward the apex (approximate to 75 Mm). We derived electron density using well- established line ratio diagnostic techniques. Electron densities along the active region loop were found to vary from 10(10) cm(-3) close to the footpoint to 10(8.5) cm(-3) higher up. A lower electron density, varying from 10(9) cm(-3) close to the footpoint to 10(8.5) cm(-3) higher up, was found for the lower temperature density diagnostic. Using these densities we derived filling factors in along the coronal loop which can be as low as 0.02 near the base of the loop. The filling factor increased with projected height of the loop. These results provide important constraints on coronal loop modeling.
C1 [Tripathi, Durgesh; Mason, Helen E.] Univ Cambridge, Dept Appl Math & Theoret Phys, Cambridge CB3 0WA, England.
[Tripathi, Durgesh; Del Zanna, Giulio] Univ Coll London, Mullard Space Sci Lab, Dorking RH5 6NT, Surrey, England.
[Dwivedi, Bhola N.] Banaras Hindu Univ, Dept Appl Phys, Varanasi 221005, Uttar Pradesh, India.
[Young, Peter R.] USN, Res Lab, Washington, DC 20375 USA.
[Young, Peter R.] George Mason Univ, Fairfax, VA 22030 USA.
RP Tripathi, D (reprint author), Univ Cambridge, Dept Appl Math & Theoret Phys, Wilberforce Rd, Cambridge CB3 0WA, England.
EM d.tripathi@damtp.cam.ac.uk
RI Tripathi, Durgesh/D-9390-2012
OI Tripathi, Durgesh/0000-0003-1689-6254
FU JAXA; NAOJ (Japan); STFC (UK); NASA; ESA; NSC (Norway)
FX We thank the referee for constructive comments. D. T., H. E. M., and G.
D. Z. acknowledge STFC. B. N. D. acknowledges HEM for support through a
rolling grant from STFC at DAMTP. Hinode is a Japanesemission developed
and launched by ISAS/JAXA, collaborating with NAOJ as a domestic
partner, NASA and STFC (UK) as international partners. Scientific
operation of the Hinode mission is conducted by the Hinode science team
organized at ISAS/JAXA. This team mainly consists of scientists from
institutes in the partner countries. Support for the post- launch
operation is provided by JAXA and NAOJ (Japan), STFC (UK), NASA, ESA,
and NSC (Norway).
NR 52
TC 80
Z9 80
U1 1
U2 6
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 1
PY 2009
VL 694
IS 2
BP 1256
EP 1265
DI 10.1088/0004-637X/694/2/1256
PG 10
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 424AW
UT WOS:000264538900043
ER
PT J
AU Sheeley, NR
Lee, DDH
Casto, KP
Wang, YM
Rich, NB
AF Sheeley, N. R., Jr.
Lee, D. D. -H.
Casto, K. P.
Wang, Y. -M.
Rich, N. B.
TI THE STRUCTURE OF STREAMER BLOBS
SO ASTROPHYSICAL JOURNAL
LA English
DT Article
DE Sun: corona; Sun: coronal mass ejections (CMEs); Sun: magnetic fields
ID CORONAL MASS EJECTIONS; SOLAR-WIND; MAGNETIC RECONNECTION; OUTER CORONA;
SUN; MAGNETOTAIL; EVOLUTION; EVENTS; ORIGIN; SECCHI
AB We have used Sun-Earth Connection Coronal and Heliospheric Investigation observations obtained from the STEREO A and B spacecraft to study complementary face-on and edge-on views of coronal streamers. The face-on views are analogous to what one might see looking down on a flat equatorial streamer belt at sunspot minimum, and show streamer blobs as diffuse arches gradually expanding outward from the Sun. With the passage of time, the legs of the arches fade, and the ejections appear as a series of azimuthal structures like ripples on a pond. The arched topology is similar to that obtained in face-on views of streamer disconnection events (including in/out pairs and streamer blowout mass ejections), and suggests that streamer blobs have the helical structure of magnetic flux ropes.
C1 [Sheeley, N. R., Jr.; Lee, D. D. -H.; Casto, K. P.; Wang, Y. -M.; Rich, N. B.] USN, Res Lab, Div Space Sci, Washington, DC 20375 USA.
RP Sheeley, NR (reprint author), USN, Res Lab, Div Space Sci, Washington, DC 20375 USA.
EM sheeley@spruce.nrl.navy.mil
FU NASA; Particle Physics and Astronomy Research Council; DLR; Science
Policy Office; CNES; CNRS
FX The STEREO/SECCHI data are produced by a consortium of the Naval
Research Laboratory ( NRL; US), the Lockheed Martin Solar and
Astrophysics Laboratory (LMSAL; US), NASA/Goddard Space Flight Center
(GSFC; US), the Rutherford Appleton Laboratory ( RAL; UK), The
University of Birmingham ( UBHAM; UK), the Max Planck Institute for
Solar System Research (MPS; Germany), CSL ( Belgium), IOTA ( France),
and IAS ( France). In the US, funding was provided by NASA, in the UK by
Particle Physics and Astronomy Research Council ( PPARC), in Germany by
DLR, in Belgium by the Science Policy Office, and in France by CNES and
CNRS. NRL received support from the USAF Space Test Program and ONR. We
are grateful to our many colleagues in these organizations who made
these observations possible. In particular, we acknowledge Lynn Simpson
(Interferometrics, Inc.) for programming assistance in the display of
COR1 and COR2 images and Karl Battams ( NRL) for identifying planets and
comets in the SECCHI images. The SOLIS data used in Figure 1 were
produced cooperatively by NSF/NSO and NASA/LWS.
NR 22
TC 39
Z9 40
U1 0
U2 2
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 1
PY 2009
VL 694
IS 2
BP 1471
EP 1480
DI 10.1088/0004-637X/694/2/1471
PG 10
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 424AW
UT WOS:000264538900061
ER
PT J
AU Delgado, RMG
Marin, VMM
Perez, E
Schmitt, HR
Fernandes, RC
AF Delgado, R. M. Gonzalez
Marin, V. M. Munoz
Perez, E.
Schmitt, H. R.
Fernandes, R. Cid
TI The starburst-AGN connection: the role of stellar clusters in AGNs
SO ASTROPHYSICS AND SPACE SCIENCE
LA English
DT Article; Proceedings Paper
CT Conference on Network for Ultra Violet Astronomy
CY JUN, 2007
CL Madrid, SPAIN
DE Galaxies: active; Galaxies: nuclei; Galaxies: clusters
ID ACTIVE GALACTIC NUCLEI; SPACE-TELESCOPE CENSUS; EARLY-TYPE GALAXIES;
SPIRAL GALAXIES; LOW-LUMINOSITY; SEYFERT-GALAXIES; HOST GALAXIES;
STAR-CLUSTERS; BLACK-HOLES; ULTRAVIOLET
AB Nuclear stellar clusters are a common phenomenon in spirals and in starburst galaxies, and they may be a natural consequence of the star formation processes in the central regions of galaxies. HST UV imaging of a few Seyfert 2 galaxies have resolved nuclear starbursts in Seyfert 2 revealing stellar clusters as the main components of the extended emission. However, we do not know whether stellar clusters are always associated with all types of nuclear activity. We present HST NUV and optical images to study the role that stellar clusters play in different types of AGNs. Also with these images, we study the circumnuclear dust morphology as a probe of the circumnuclear environment of AGNs.
C1 [Delgado, R. M. Gonzalez; Marin, V. M. Munoz; Perez, E.] CSIC, Inst Astrofis Andalucia, Granada, Spain.
[Schmitt, H. R.] USN, Res Lab, Washington, DC 20375 USA.
[Fernandes, R. Cid] Univ Fed Santa Catarina, Santa Catarina, Brazil.
RP Delgado, RMG (reprint author), CSIC, Inst Astrofis Andalucia, Granada, Spain.
EM rosa@iaa.es
RI Fernandes, Roberto/M-7334-2014;
OI Fernandes, Roberto/0000-0001-9672-0296; Gonzalez Delgado, Rosa
Maria/0000-0003-1058-1577; Perez, Enrique/0000-0001-9737-4559
NR 29
TC 4
Z9 4
U1 0
U2 1
PU SPRINGER
PI DORDRECHT
PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS
SN 0004-640X
EI 1572-946X
J9 ASTROPHYS SPACE SCI
JI Astrophys. Space Sci.
PD APR
PY 2009
VL 320
IS 1-3
BP 61
EP 67
DI 10.1007/s10509-008-9834-3
PG 7
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 418UK
UT WOS:000264174700012
ER
PT J
AU Barstow, MA
Burleigh, MR
Bannister, NJ
Lapington, JS
Kowalski, MP
Cruddace, RG
Wood, KS
Auchere, F
Bode, MF
Bromage, GE
Gibson, B
Cameron, AC
Cassatella, A
Delmotte, F
Ravet, MF
Doyle, JG
Jeffery, CS
Gaensicke, B
Jordan, C
Kappelmann, N
Werner, K
Lallement, R
de Martino, D
Matthews, SA
Phillips, KJH
Del Zanna, G
Orio, M
Pace, E
Pagano, I
Schmitt, JHMM
Welsh, BY
AF Barstow, M. A.
Burleigh, M. R.
Bannister, N. J.
Lapington, J. S.
Kowalski, M. P.
Cruddace, R. G.
Wood, K. S.
Auchere, F.
Bode, M. F.
Bromage, G. E.
Gibson, B.
Cameron, A. C.
Cassatella, A.
Delmotte, F.
Ravet, M. -F.
Doyle, J. G.
Jeffery, C. S.
Gaensicke, B.
Jordan, C.
Kappelmann, N.
Werner, K.
Lallement, R.
de Martino, D.
Matthews, S. A.
Phillips, K. J. H.
Del Zanna, G.
Orio, M.
Pace, E.
Pagano, I.
Schmitt, J. H. M. M.
Welsh, B. Y.
TI Stellar and galactic environment survey (SAGE)
SO ASTROPHYSICS AND SPACE SCIENCE
LA English
DT Article; Proceedings Paper
CT Conference on Network for Ultra Violet Astronomy
CY JUN, 2007
CL Madrid, SPAIN
DE Instrumentation; Ultraviolet
ID EXTREME-ULTRAVIOLET OBSERVATIONS; INTERMEDIATE-ACTIVITY LEVELS; LOCAL
INTERSTELLAR-MEDIUM; CORONAL ABUNDANCES; WHITE-DWARFS; STARS;
SPECTROSCOPY; SPECTRUM; PLANETS; LINES
AB This paper describes a proposed high resolution soft X-ray and Extreme Ultraviolet (EUV) spectroscopy mission to carry out a survey of Stellar and Galactic Environments (SAGE). The payload is based on novel diffraction grating technology which has already been proven in a sub-orbital space mission and which is ready to fly on a satellite platform with minimal development. Much of the technical detail of the instrumentation has been reported elsewhere and we concentrate our discussion here on the scientific goals of a SAGE base-line mission, demonstrating the scientific importance of high resolution spectroscopy in the Extreme Ultraviolet for the study of stars and the local interstellar medium.
C1 [Barstow, M. A.; Burleigh, M. R.; Bannister, N. J.; Lapington, J. S.] Univ Leicester, Dept Phys & Astron, Leicester LE1 7RH, Leics, England.
[Kowalski, M. P.; Cruddace, R. G.; Wood, K. S.] USN, Res Lab, Washington, DC 20375 USA.
[Auchere, F.] Univ Paris 11, Inst Astrophys Spatiale, Orsay, France.
[Bode, M. F.] Liverpool John Moores Univ, Astrophys Res Inst, Birkenhead CH41 1LD, Merseyside, England.
[Bromage, G. E.; Gibson, B.] Univ Cent Lancashire, Ctr Astrophys, Preston PR1 2HE, Lancs, England.
[Cameron, A. C.] Univ St Andrews, Sch Phys & Astron, St Andrews, Fife, Scotland.
[Cassatella, A.] Univ Roma Tre, Inst Nazl Astrofis, Rome, Italy.
[Delmotte, F.; Ravet, M. -F.] Inst Opt, Palaiseau, France.
[Doyle, J. G.; Jeffery, C. S.] Armagh Observ, Armagh BT61 9DG, North Ireland.
[Gaensicke, B.] Univ Warwick, Dept Phys, Coventry CV4 7AL, W Midlands, England.
[Jordan, C.] Univ Oxford, Dept Phys, Oxford, England.
[Kappelmann, N.; Werner, K.] Univ Tubingen, Inst Astron & Astrophys, Tubingen, Germany.
[Lallement, R.] CNRS, Serv Aeron, F-91371 Verrieres Le Buisson, France.
[de Martino, D.] Osserv Astron Capodimonte, INAF, I-80131 Naples, Italy.
[Matthews, S. A.; Phillips, K. J. H.; Del Zanna, G.] Univ Coll London, Mullard Space Sci Lab, Dorking RH5 6NT, Surrey, England.
[Orio, M.] Osserv Astron Padova, INAF, Padua, Italy.
[Pace, E.] Univ Florence, Dipartimento Astron & Sci Spazio, I-50125 Florence, Italy.
[Pagano, I.] Osserv Astrofis Catania, INAF, I-95125 Catania, Italy.
[Schmitt, J. H. M. M.] Univ Hamburg, Hamburg, Germany.
[Welsh, B. Y.] Univ Calif Berkeley, Space Sci Lab, Expt Astrophys Grp, Berkeley, CA 94720 USA.
RP Barstow, MA (reprint author), Univ Leicester, Dept Phys & Astron, Univ Rd, Leicester LE1 7RH, Leics, England.
EM mab@star.le.ac.uk
RI Matthews, Sarah/C-4292-2008; Lapington, Jon/A-7669-2012; Gaensicke,
Boris/A-9421-2012; Gibson, Brad/M-3592-2015; Pagano,
Isabella/I-6934-2015;
OI Gaensicke, Boris/0000-0002-2761-3005; Gibson, Brad/0000-0003-4446-3130;
Pagano, Isabella/0000-0001-9573-4928; Auchere,
Frederic/0000-0003-0972-7022; Cameron, Andrew/0000-0002-8863-7828; de
Martino, Domitilla/0000-0002-5069-4202; Matthews,
Sarah/0000-0001-9346-8179; Jeffery, C. Simon/0000-0003-1759-0302
NR 28
TC 1
Z9 1
U1 0
U2 4
PU SPRINGER
PI DORDRECHT
PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS
SN 0004-640X
J9 ASTROPHYS SPACE SCI
JI Astrophys. Space Sci.
PD APR
PY 2009
VL 320
IS 1-3
BP 231
EP 238
DI 10.1007/s10509-008-9792-9
PG 8
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 418UK
UT WOS:000264174700038
ER
PT J
AU Geyer, JA
Keenan, SM
Woodard, CL
Thompson, PA
Gerena, L
Nichols, DA
Gutteridge, CE
Waters, NC
AF Geyer, Jeanne A.
Keenan, Susan M.
Woodard, Cassandra L.
Thompson, Philip A.
Gerena, Lucia
Nichols, Daniel A.
Gutteridge, Clare E.
Waters, Norman C.
TI Selective inhibition of Pfmrk, a Plasmodium falciparum CDK, by
antimalarial 1,3-diaryl-2-propenones
SO BIOORGANIC & MEDICINAL CHEMISTRY LETTERS
LA English
DT Article
DE Pfmrk; CDK7; Malaria; Plasmodium falciparum; Chalcone; Kinase
inhibitors; Cyclin dependent protein kinase; Anti-malarials; Drug
target; Parasite
ID CYCLIN-DEPENDENT KINASES; PROTEIN-KINASES; ANTIPARASITIC CHEMOTHERAPY;
CELL-CYCLE; IDENTIFICATION; MALARIA; ACTIVATION; CHALCONES; TARGETS;
AGENT
AB The cyclin dependent protein kinases, Pfmrk and PfPK5, most likely play an essential role in cell cycle control and differentiation in Plasmodium falciparum and are thus an attractive target for antimalarial drug development. Various 1,3-diaryl-2-propenones (chalcone derivatives) which selectivity inhibit Pfmrk in the low micromolar range (over PfPK5) are identified. Molecular modeling shows a pair of amino acid residues within the Pfmrk active site which appear to confer this selectivity. Predicted interactions between the chalcones and Pfmrk correlate well with observed potency. Pfmrk inhibition and activity against the parasite in vitro correlate weakly. Several mechanisms of action have been suggested for chalcone derivatives and our study suggests that kinase inhibition may be an additional mechanism of antimalarial activity for this class of compounds. Published by Elsevier Ltd.
C1 [Geyer, Jeanne A.; Woodard, Cassandra L.; Gerena, Lucia; Nichols, Daniel A.; Waters, Norman C.] Walter Reed Army Inst Res, Div Expt Therapeut, Silver Spring, MD 20910 USA.
[Keenan, Susan M.; Thompson, Philip A.] Univ No Colorado, Sch Biol Sci, Greeley, CO 80639 USA.
[Gutteridge, Clare E.] USN Acad, Dept Chem, Annapolis, MD 21402 USA.
RP Waters, NC (reprint author), Australian Army Malaria Inst, Enoggera, Qld 4051, Australia.
EM norman.waters@us.army.mil
NR 26
TC 38
Z9 38
U1 0
U2 4
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0960-894X
J9 BIOORG MED CHEM LETT
JI Bioorg. Med. Chem. Lett.
PD APR 1
PY 2009
VL 19
IS 7
BP 1982
EP 1985
DI 10.1016/j.bmcl.2009.02.042
PG 4
WC Chemistry, Medicinal; Chemistry, Organic
SC Pharmacology & Pharmacy; Chemistry
GA 418SS
UT WOS:000264169700030
PM 19250824
ER
PT J
AU Han, W
Gills, JJ
Memmott, RM
Lam, S
Dennis, PA
AF Han, Wei
Gills, Joell J.
Memmott, Regan M.
Lam, Stephen
Dennis, Phillip A.
TI The Chemopreventive Agent Myoinositol Inhibits Akt and Extracellular
Signal-Regulated Kinase in Bronchial Lesions from Heavy Smokers
SO CANCER PREVENTION RESEARCH
LA English
DT Article
ID CELL LUNG-CANCER; AIRWAY EPITHELIAL-CELLS; PROTEIN-KINASE; A/J MICE;
PROGNOSTIC-SIGNIFICANCE; K-RAS; INOSITOL; NICOTINE; PHOSPHORYLATION;
ADENOCARCINOMA
AB Myoinositol is an isomer of glucose that has chemopreventive activity in animal models of cancer. In a recent phase I clinical trial, myoinositol administration correlated with a statistically significant regression of preexisting bronchial dysplastic lesions in heavy smokers. To shed light on the potential mechanisms involved, activation of Akt and extracellular signal-regulated kinase (ERK), two kinases that control cellular proliferation and survival, was assessed in 206 paired bronchial biopsies from 21 patients who participated in this clinical trial. Before myoinositol treatment, strongly positive staining for activation of Akt was detected in 27% of hyperplastic/metaplastic lesions and 58% of dysplastic lesions (P = 0.05, chi(2) test). There was also a trend toward increased activation of ERK (28% in regions of hyperplasia/metaplasia to 42% of dysplastic lesions). Following myoinositol treatment, significant decreases in Akt and ERK phosphorylation were observed in dysplastic (P < 0.01 and 0.05, respectively) but not hyperplastic/metaplastic lesions (P > 0.05). In vitro, myoinositol decreased endogenous and tobacco carcinogen-induced activation of Akt and ERK in immortalized human bronchial epithelial cells, which decreased cell proliferation and induced a G(1)-S cell cycle arrest. These results show that the phenotypic progression of premalignant bronchial lesions from smokers correlates with increased activation of Akt and ERK and that these kinases are targets of myoinositol. Moreover, they suggest that myoinositol might cause regression of bronchial dysplastic lesions through inhibition of active Akt and ERK.
C1 [Han, Wei; Gills, Joell J.; Memmott, Regan M.; Dennis, Phillip A.] NCI, Med Oncol Branch, Ctr Canc Res, Bethesda, MD 20892 USA.
[Lam, Stephen] British Columbia Canc Agcy, Dept Resp Med, Vancouver, BC V5Z 4E6, Canada.
[Lam, Stephen] British Columbia Canc Agcy, Dept Canc Imaging, Vancouver, BC V5Z 4E6, Canada.
[Lam, Stephen] Univ British Columbia, Vancouver, BC V5Z 1M9, Canada.
RP Dennis, PA (reprint author), USN Med Oncol, NCI, Room 5101,Bldg 8,8901 Wisconsin Ave, Bethesda, MD 20889 USA.
EM pdennis@nih.gov
FU NIH [NO1-CO-12400, N01-CN85188]; National Cancer Institute; Center for
Cancer Research
FX Intramural Research Program of the NIH, National Cancer Institute,
Center for Cancer Research, and federal funds from the National Cancer
Institute, NIH, under contract National Cancer Institute Contract
NO1-CO-12400 and N01-CN85188.
NR 36
TC 21
Z9 21
U1 1
U2 1
PU AMER ASSOC CANCER RESEARCH
PI PHILADELPHIA
PA 615 CHESTNUT ST, 17TH FLOOR, PHILADELPHIA, PA 19106-4404 USA
SN 1940-6207
J9 CANCER PREV RES
JI Cancer Prev. Res.
PD APR
PY 2009
VL 2
IS 4
BP 370
EP 376
DI 10.1158/1940-6207.CAPR-08-0209
PG 7
WC Oncology
SC Oncology
GA 429CI
UT WOS:000264898000014
PM 19336734
ER
PT J
AU Kaminski, RW
Turbyfill, KR
Chao, C
Ching, WM
Oaks, EV
AF Kaminski, Robert W.
Turbyfill, K. Ross
Chao, C.
Ching, W. M.
Oaks, Edwin V.
TI Mucosal Adjuvanticity of a Shigella Invasin Complex with DNA-Based
Vaccines
SO CLINICAL AND VACCINE IMMUNOLOGY
LA English
DT Article
ID IMMUNODEFICIENCY-VIRUS TYPE-1; EPITHELIAL-CELLS; MOLECULAR-CLONING;
RICKETTSIA-TSUTSUGAMUSHI; MONOCLONAL-ANTIBODIES; CATIONIC LIPOSOMES;
ESCHERICHIA-COLI; IMMUNE-RESPONSES; PROTEIN ANTIGEN; IPA INVASINS
AB Protection against many infectious diseases may require the induction of cell-mediated and mucosal immunity. Immunization with plasmid DNA-based vaccines has successfully induced cell-mediated immune responses in small animals but is less potent in humans. Therefore, several methods are under investigation to augment DNA vaccine immunogenicity. In the current study, a mucosal adjuvant consisting of an invasin protein-lipopolysaccharide complex (Invaplex) isolated from Shigella spp. was evaluated as an adjuvant for DNA-based vaccines. Coadministration of plasmid DNA encoding the Orientia tsutsugamushi r56Karp protein with Invaplex resulted in enhanced cellular and humoral responses in intranasally immunized mice compared to immunization with DNA without adjuvant. Mucosal immunoglobulin A, directed to plasmid-encoded antigen, was detected in lung and intestinal compartments after Invaplex-DNA immunization followed by a protein booster. Moreover, immunization with Invaplex elicited Shigella-specific immune responses, highlighting its potential use in a combination vaccine strategy. The capacity of Invaplex to enhance the immunogenicity of plasmid-encoded genes suggested that Invaplex promoted the uptake and expression of the delivered genes. To better understand the native biological activities of Invaplex related to its adjuvanticity, interactions between Invaplex and mammalian cells were characterized. Invaplex rapidly bound to and was internalized by non-phagocytic, eukaryotic cells in an endocytic process dependent on actin polymerization and independent of microtubule formation. Invaplex also mediated transfection with several plasmid DNA constructs, which could be inhibited with monoclonal antibodies specific for IpaB and IpaC or Invaplex-specific polyclonal sera. The cellular binding and transport capabilities of Invaplex likely contribute to the adjuvanticity and immunogenicity of Invaplex.
C1 [Kaminski, Robert W.; Turbyfill, K. Ross; Oaks, Edwin V.] Walter Reed Army Inst Res, Div Bacterial & Rickettsial Dis, Silver Spring, MD 20910 USA.
[Chao, C.; Ching, W. M.] USN, Rickettsial Dis Res Program, Med Res Ctr, Silver Spring, MD 20910 USA.
RP Kaminski, RW (reprint author), Walter Reed Army Inst Res, Div Bacterial & Rickettsial Dis, 503 Robert Grant Ave, Silver Spring, MD 20910 USA.
EM Robert.Kaminski@amedd.army.mil
RI Chao, Chien-Chung/A-8017-2011
NR 53
TC 11
Z9 13
U1 0
U2 1
PU AMER SOC MICROBIOLOGY
PI WASHINGTON
PA 1752 N ST NW, WASHINGTON, DC 20036-2904 USA
SN 1556-6811
J9 CLIN VACCINE IMMUNOL
JI Clin. Vaccine Immunol.
PD APR
PY 2009
VL 16
IS 4
BP 574
EP 586
DI 10.1128/CVI.00435-08
PG 13
WC Immunology; Infectious Diseases; Microbiology
SC Immunology; Infectious Diseases; Microbiology
GA 429RS
UT WOS:000264938400021
PM 19225079
ER
PT J
AU Hedlund, AJ
Broderick, M
Shah, N
Cantrell, L
AF Hedlund, Amy Joy
Broderick, Molly
Shah, Nilofar
Cantrell, Lee
TI Varenicline overdose in a teenager
SO CLINICAL TOXICOLOGY
LA English
DT Letter
ID SMOKING-CESSATION
C1 [Hedlund, Amy Joy] USN, San Diego Med Ctr, San Diego, CA 92134 USA.
[Broderick, Molly; Shah, Nilofar; Cantrell, Lee] Calif Poison Control Syst San Diego, San Diego, CA USA.
[Shah, Nilofar] UCSF, San Diego, CA USA.
RP Hedlund, AJ (reprint author), USN, San Diego Med Ctr, 34800 Bob Wilson Dr, San Diego, CA 92134 USA.
EM amyjoy70@hotmail.com
NR 5
TC 2
Z9 2
U1 0
U2 0
PU INFORMA HEALTHCARE
PI NEW YORK
PA 52 VANDERBILT AVE, NEW YORK, NY 10017 USA
SN 1556-3650
J9 CLIN TOXICOL
JI Clin. Toxicol.
PD APR-MAY
PY 2009
VL 47
IS 4
BP 371
EP 371
PG 1
WC Toxicology
SC Toxicology
GA 473LN
UT WOS:000268208300022
PM 19274508
ER
PT J
AU Plant, NG
Edwards, KL
Kaihatu, JM
Veeramony, J
Hsu, L
Holland, KT
AF Plant, Nathaniel G.
Edwards, Kacey L.
Kaihatu, James M.
Veeramony, Jayaram
Hsu, Larry
Holland, K. Todd
TI The effect of bathymetric filtering on nearshore process model results
SO COASTAL ENGINEERING
LA English
DT Article
DE Prediction; Wave height; Alongshore current; Rip current; Interpolation;
Errors
ID 3RD-GENERATION WAVE MODEL; COASTAL REGIONS; BEACH; VALIDATION;
EVOLUTION; SCALE
AB Nearshore wave and flow model results are shown to exhibit a strong sensitivity to the resolution of the input bathymetry. In this analysis, bathymetric resolution was varied by applying smoothing filters to high-resolution survey data to produce a number of bathymetric grid surfaces. We demonstrate that the sensitivity of model-predicted wave height and flow to variations in bathymetric resolution had different characteristics. Wave height predictions were most sensitive to resolution of cross-shore variability associated with the structure of nearshore sandbars. Flow predictions were most sensitive to the resolution of intermediate scale alongshore variability associated with the prominent sandbar rhythmicity. Flow sensitivity increased in cases where a sandbar was closer to shore and shallower. Perhaps the most surprising implication of these results is that the interpolation and smoothing of bathymetric data could be optimized differently for the wave and flow models. We show that errors between observed and modeled flow and wave heights are well predicted by comparing model simulation results using progressively filtered bathymetry to results from the highest resolution simulation. The damage done by over smoothing or inadequate sampling can therefore be estimated using model simulations. We conclude that the ability to quantify prediction errors will be useful for supporting future data assimilation efforts that require this information. Published by Elsevier B.V.
C1 [Plant, Nathaniel G.] US Geol Survey, St Petersburg, FL 33701 USA.
[Edwards, Kacey L.; Veeramony, Jayaram; Hsu, Larry; Holland, K. Todd] USN, Res Lab, Stennis Space Ctr, MS 39529 USA.
[Kaihatu, James M.] Texas A&M Univ, Zachary Dept Civil Engn, College Stn, TX 77843 USA.
RP Plant, NG (reprint author), US Geol Survey, St Petersburg, FL 33701 USA.
EM nplant@usgs.gov
RI Holland, K. Todd/A-7673-2011; Kaihatu, James/H-7561-2016;
OI Holland, K. Todd/0000-0002-4601-6097; Kaihatu,
James/0000-0002-9277-6409; Plant, Nathaniel/0000-0002-5703-5672
FU NRL [0602435N]
FX This analysis benefited from the efforts of the Duck94 field research
program, including FRF staff (who collected the bathymetry and
maintained some of the wave gages) and Drs. Guza and Elgar (for
cross-shore array of wave/flow observations). This work was performed
under ONR base funding of NRL, program element 0602435N. We thank two
anonymous reviewers for their constructive comments.
NR 21
TC 23
Z9 23
U1 0
U2 7
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0378-3839
J9 COAST ENG
JI Coast. Eng.
PD APR
PY 2009
VL 56
IS 4
BP 484
EP 493
DI 10.1016/j.coastaleng.2008.10.010
PG 10
WC Engineering, Civil; Engineering, Ocean
SC Engineering
GA 435CN
UT WOS:000265321100009
ER
PT J
AU Bradford, SF
AF Bradford, Scott F.
TI Improving the efficiency of a Godunov-based free surface flow model
SO COMPUTERS & FLUIDS
LA English
DT Article
ID NUMERICAL-SIMULATION; WAVE PROPAGATION; DYNAMICS; FLUID; SCHEME; ZONE
AB Models for simulating turbulent, nonhydrostatic, free surface flow are highly complex and require the combination of several different physical phenomena. Consequently, there are many different approaches to design such a model. This paper explores ways to improve the numerical efficiency of an existing free surface flow model without severely sacrificing its accuracy. Specifically, this paper investigates alternative methods for integrating diffusion as well as extending the model to nonhydrostatic flow. Published by Elsevier Ltd.
C1 USN, Res Lab, Image Sci & Applicat Branch, Washington, DC 20375 USA.
RP Bradford, SF (reprint author), USN, Res Lab, Image Sci & Applicat Branch, Code 7261,4555 Overlook Ave SW, Washington, DC 20375 USA.
EM Scott.Bradford@nrl.navy.mil
NR 22
TC 0
Z9 0
U1 0
U2 0
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0045-7930
EI 1879-0747
J9 COMPUT FLUIDS
JI Comput. Fluids
PD APR
PY 2009
VL 38
IS 4
BP 851
EP 860
DI 10.1016/j.compfluid.2008.09.004
PG 10
WC Computer Science, Interdisciplinary Applications; Mechanics
SC Computer Science; Mechanics
GA 420QT
UT WOS:000264305000012
ER
PT J
AU Satter, EK
AF Satter, Elizabeth K.
TI Tinea Imbricata
SO CUTIS
LA English
DT Article
ID CONCENTRIC RINGS; SUSCEPTIBILITY; DERMATOPHYTOSIS; INHERITANCE;
MIMICKING
AB This article has been peer reviewed and approved by Michael Fisher, MID, Professor of Medicine, Albert Einstein College of Medicine. Review date: March 2009.
This activity has been planned and implemented in accordance with the Essential Areas and Policies of the Accreditation Council for Continuing Medical Education through the joint sponsorship of Albert Einstein College of Medicine and Quadrant HealthCom, Inc. Albert Einstein College of Medicine is accredited by the ACCME to provide continuing medical education for physicians.
Albert Einstein College of Medicine designates this educational activity for a maximum of 1 AMA PRA Category 1 Credit (TM). Physicians should only claim credit commensurate with the extent of their participation in the activity.
This activity has been planned and produced in accordance with ACCME Essentials.
C1 USN, Med Ctr, Dept Dermatol & Pathol, San Diego, CA 92134 USA.
RP Satter, EK (reprint author), USN, Med Ctr, Dept Dermatol & Pathol, 34520 Bob Wilson Dr,Ste 300, San Diego, CA 92134 USA.
EM elizabeth.satter@med.navy.mil
NR 16
TC 6
Z9 6
U1 0
U2 0
PU QUADRANT HEALTHCOM INC
PI PARSIPPANY
PA 7 CENTURY DRIVE, STE 302, PARSIPPANY, NJ 07054-4603 USA
SN 0011-4162
J9 CUTIS
JI Cutis
PD APR
PY 2009
VL 83
IS 4
BP 188
EP 191
PG 4
WC Dermatology
SC Dermatology
GA 439NC
UT WOS:000265632800005
PM 19445309
ER
PT J
AU Khanna, P
Ramachandran, N
Yang, J
Wang, J
Kumar, A
Jaroszeski, M
Bhansali, S
AF Khanna, Puneet
Ramachandran, Niraj
Yang, Jie
Wang, Jing
Kumar, Ashok
Jaroszeski, Mark
Bhansali, Shekhar
TI Nanocrystalline diamond microspikes increase the efficiency of
ultrasonic cell lysis in a microfluidic lab-on-a-chip
SO DIAMOND AND RELATED MATERIALS
LA English
DT Article
DE Bio-MEMS; Microfluidics; Lab-on-a-chip
ID BACTERIAL-SPORES; DNA ANALYSIS; FILMS
AB This research demonstrates that use of Nanocrystalline Diamond (NCD) microspikes in a microfluidic chamber increases the efficiency of mechanical cell lysis. as compared to a standard microfluidic surface such as glass. Microspikes made of narrocrystalline diamond were fabricated using standard MEMS techniques, and were incorporated in microfluidic chamber developed as part of a lab on a chip system. Mechanical cell lysis was performed on B16-10 (ATCC CRL-6475) murine melanoma cells using ultrasonic vibration and the efficiency of cell lysis was determined. The microspikes puncture the cell membranes on collision greatly increasing the efficiency of cell lysis (about 400% as per fluorescence measurements) as compared to a non-textured glass surface. The effect of using cell disruption glass beads during ultrasonic lyses was also explored. This methodology of cell disruption could potentially make mechanical cell lysis a viable and preferred lysis option for lab-on-a-chip applications. (C) 2008 Elsevier B.V. All rights reserved.
C1 [Khanna, Puneet; Ramachandran, Niraj; Wang, Jing; Kumar, Ashok; Jaroszeski, Mark; Bhansali, Shekhar] Univ S Florida, Tampa, FL 33620 USA.
[Yang, Jie] USN, Res Lab, Washington, DC 20375 USA.
RP Jaroszeski, M (reprint author), Univ S Florida, ENB 118,4202 E Fowler Ave, Tampa, FL 33620 USA.
EM mjarosze@eng.usf.edu; bhansali@eng.usf.edu
RI Bhansali, Shekhar/E-4705-2010
FU NSF [0404137]
FX This work was partially funded by NSF NIRT grant # 0404137.
NR 13
TC 9
Z9 9
U1 3
U2 12
PU ELSEVIER SCIENCE SA
PI LAUSANNE
PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND
SN 0925-9635
J9 DIAM RELAT MATER
JI Diam. Relat. Mat.
PD APR
PY 2009
VL 18
IS 4
BP 606
EP 610
DI 10.1016/j.diamond.2008.10.046
PG 5
WC Materials Science, Multidisciplinary
SC Materials Science
GA 422KT
UT WOS:000264427300002
ER
PT J
AU Wang, S
Swope, VM
Bulter, JE
Feygelson, T
Swain, GM
AF Wang, Shihua
Swope, Vernon M.
Bulter, James E.
Feygelson, T.
Swain, Greg M.
TI The structural and electrochemical properties of boron-doped
nanocrystalline diamond thin-film electrodes grown from Ar-rich and
H-2-rich source gases
SO DIAMOND AND RELATED MATERIALS
LA English
DT Article
DE Nanocrystalline diamond film; CVD; Electrochemistry; CP-AFM
ID GLASSY-CARBON ELECTRODES; CHEMICAL-VAPOR-DEPOSITION; RAMAN-SPECTROSCOPY;
TRANSFER KINETICS; ULTRANANOCRYSTALLINE DIAMOND; MICROWAVE PLASMAS;
FIELD-EMISSION; HIGH-QUALITY; SPECTRA; HYDROGEN
AB The microstructural, electrical and electrochemical properties of boron-doped (ultra)-nailocrystalline diamond (UNCD) films deposited from a CH4/H-2/Ar source gas mixture were compared with those of boron-doped nanocrystalline diamond (NCD) films grown from a conventional CH4/H-2 source gas mixture. Scanning electron microscopy, visible-Raman spectroscopy and X-ray diffraction analysis were employed to probe the film morphology and microstructure. Conducting-probe atomic force microscopy (CP-AFM) was used to simultaneously map the morphology and electrical conductivity of the two film types, Spatial heterogeneity in the electrical conductivity Was observed for both films as each is composed of regions of high electrical conductivity isolated by more insulating regions. The electrochemical properties were evaluated using the redox couples: Fe(CN)(6)(3-/4-), Ru(NH3)(6)(3+/2+), IrClG2-/3-, methyl viologen, dopamine, and Fe3+/2+. Taken together. the results confirm that even though the morphology and microstructure of UNCD and NCD films are distinct, both boron-doped film types exhibit comparable electrical and electrochemical properties. (C) 2009 Elsevier B.V. All rights reserved.
C1 [Wang, Shihua; Swope, Vernon M.; Swain, Greg M.] Michigan State Univ, Dept Chem, E Lansing, MI 48823 USA.
[Bulter, James E.] Michigan State Univ, Fraunhofer Ctr Coatings & Laser Applicat, E Lansing, MI 48823 USA.
[Bulter, James E.] USN, Res Lab, Div Chem, Washington, DC 20375 USA.
[Feygelson, T.] SAIC Inc, Washington, DC 20003 USA.
RP Swain, GM (reprint author), Michigan State Univ, Dept Chem, E Lansing, MI 48823 USA.
EM swain@chemistry.msu.edu
RI Swain, Greg/B-3023-2010
OI Swain, Greg/0000-0001-6498-8351
FU National Science Foundation [CTS-0210366]; NRL/DNR
FX This research is supported by the National Science Foundation under the
Nanoscale Interdisciplinary Research Team program (NIRT, CTS-0210366)
(Michigan State, Vanderbilt, and Purdue Universities). JEB acknowledges
the partial support of NRL/DNR for this work.
NR 75
TC 51
Z9 53
U1 1
U2 25
PU ELSEVIER SCIENCE SA
PI LAUSANNE
PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND
SN 0925-9635
EI 1879-0062
J9 DIAM RELAT MATER
JI Diam. Relat. Mat.
PD APR
PY 2009
VL 18
IS 4
BP 669
EP 677
DI 10.1016/j.diamond.2008.11.033
PG 9
WC Materials Science, Multidisciplinary
SC Materials Science
GA 422KT
UT WOS:000264427300013
ER
PT J
AU Tufts, JB
Weathersby, PK
Marshall, L
AF Tufts, Jennifer B.
Weathersby, Paul K.
Marshall, Lynne
TI Estimation of Equivalent Noise Exposure Level Using Hearing Threshold
Levels of a Population
SO EAR AND HEARING
LA English
DT Article
AB Objectives: Noise-induced hearing loss (NIHL) is costly in both human and economic terms. One means of reducing NIHL is to apply engineering controls to hazardous noise sources. To trade off the cost of engineering controls against the total direct monetary costs incurred by NIHL a means of predicting the amount of NIHL that will be incurred over the life-cycle of a hazardous noise source is necessary. A widely known algorithm for the prediction of NIHL is published in ANSI S3.44-1996. However, the algorithm inputs, noise exposure level and duration, may be difficult to determine in some cases. This paper describes the conceptual basis of an approach for using ANSI S3.44-996 to predict hearing thresholds in a population even when noise exposure levels and durations are not precisely known, and demonstrates the initial application of this approach to a single military population.
Design: Retrospective data were obtained on the hearing-threshold levels, demographic characteristics, and noise exposure history of 250 male U.S. Navy machinists' mates. A maximum-likelihood fitting procedure was developed in which the noise level input to the ANSI S3.44-1996 algorithm was varied in order to determine the noise level that best accounted for all of the data.
Results: The maximum likelihood fitting produced a value for the noise level input of approximately 93 dBA, with a standard error of approximately 0.3. The low standard error virtually eliminates any estimate above 94 or below 92 dBA, and indicates that a good fit to the data was achieved.
Conclusions: This research demonstrates the feasibility of calibrating the ANSI S3.44-1996 algorithm to an individual population, even when noise exposure level or duration is not precisely known. Future work will focus on validating and generalizing this approach so that it may be used to predict hearing-threshold levels in various populations. Such an approach may be used in calculating potential cost savings in compensable hearing loss due to the application of noise control solutions.
C1 [Tufts, Jennifer B.] Univ Connecticut, Dept Commun Sci, Storrs, CT 06269 USA.
[Weathersby, Paul K.; Marshall, Lynne] USN, Submarine Med Res Lab, Groton, CT USA.
RP Tufts, JB (reprint author), Univ Connecticut, Dept Commun Sci, 850 Bolton Ave,Unit 1085,Storrs, Storrs, CT 06269 USA.
EM jennifer.tufts@uconn.edu
FU Defense Occupational Health Program; University of Connecticut
FX This work was supported by the Defense Occupational Health Program and
approved by the Office of Research Compliance at the University of
Connecticut.
NR 11
TC 2
Z9 2
U1 1
U2 1
PU LIPPINCOTT WILLIAMS & WILKINS
PI PHILADELPHIA
PA 530 WALNUT ST, PHILADELPHIA, PA 19106-3621 USA
SN 0196-0202
J9 EAR HEARING
JI Ear Hear.
PD APR
PY 2009
VL 30
IS 2
BP 287
EP 290
PG 4
WC Audiology & Speech-Language Pathology; Otorhinolaryngology
SC Audiology & Speech-Language Pathology; Otorhinolaryngology
GA 417AK
UT WOS:000264046600013
PM 19194295
ER
PT J
AU Gopalswamy, N
Yashiro, S
Michalek, G
Stenborg, G
Vourlidas, A
Freeland, S
Howard, R
AF Gopalswamy, N.
Yashiro, S.
Michalek, G.
Stenborg, G.
Vourlidas, A.
Freeland, S.
Howard, R.
TI The SOHO/LASCO CME Catalog
SO EARTH MOON AND PLANETS
LA English
DT Article; Proceedings Paper
CT European General Assembly on International Heliophysics Year
CY JUN, 2007
CL Torino, ITALY
DE Coronal mass ejections; Flares; Geomagnetic storms; Solar energetic
particle events
ID CORONAL MASS EJECTIONS; MAGNETIC CLOUDS; RADIO; SOLAR-CYCLE-23
AB Coronal mass ejections (CMEs) are routinely identified in the images of the solar corona obtained by the Solar and Heliospheric Observatory (SOHO) mission's Large Angle and Spectrometric Coronagraph (LASCO) since 1996. The identified CMEs are measured and their basic attributes are cataloged in a data base known as the SOHO/LASCO CME Catalog. The Catalog also contains digital data, movies, and plots for each CME, so detailed scientific investigations can be performed on CMEs and the related phenomena such as flares, radio bursts, solar energetic particle events, and geomagnetic storms. This paper provides a brief description of the Catalog and summarizes the statistical properties of CMEs obtained using the Catalog. Data products relevant to space weather research and some CME issues that can be addressed using the Catalog are discussed. The URL of the Catalog is: http://cdaw.gsfc.nasa.gov/CME_list.
C1 [Yashiro, S.; Michalek, G.; Stenborg, G.] Catholic Univ Amer, Washington, DC 20064 USA.
[Vourlidas, A.; Howard, R.] USN, Res Lab, Washington, DC 20375 USA.
[Freeland, S.] Lockheed Martin Adv Technol Ctr, Palo Alto, CA USA.
[Gopalswamy, N.] NASA, Goddard Space Flight Ctr, Code 695, Greenbelt, MD 20771 USA.
RP Gopalswamy, N (reprint author), NASA, Goddard Space Flight Ctr, Code 695, Greenbelt, MD 20771 USA.
EM nat.gopalswamy@nasa.gov; seiji.yashiro@nasa.gov; freeland@lmsal.com;
russ.howard@nrl.navy.mil
RI Vourlidas, Angelos/C-8231-2009; Gopalswamy, Nat/D-3659-2012
OI Vourlidas, Angelos/0000-0002-8164-5948;
NR 33
TC 158
Z9 159
U1 1
U2 7
PU SPRINGER
PI DORDRECHT
PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS
SN 0167-9295
J9 EARTH MOON PLANETS
JI Earth Moon Planets
PD APR
PY 2009
VL 104
IS 1-4
BP 295
EP 313
DI 10.1007/s11038-008-9282-7
PG 19
WC Astronomy & Astrophysics; Geosciences, Multidisciplinary
SC Astronomy & Astrophysics; Geology
GA 414MX
UT WOS:000263869300045
ER
PT J
AU Weitzman, RA
AF Weitzman, R. A.
TI Fitting the Rasch Model to Account for Variation in Item Discrimination
SO EDUCATIONAL AND PSYCHOLOGICAL MEASUREMENT
LA English
DT Article
DE Rasch model; single-parameter logistic model; item discrimination;
classical test theory; modern test theory
AB Building on the Kelley and Gulliksen versions of classical test theory, this article shows that a logistic model having only a single item parameter can account for varying item discrimination, as well as difficulty, by using item-test correlations to adjust incorrect-correct (0-1) item responses prior to an initial model fit. The fit occurs through the application of least squares to the logits of the adjusted item responses. Iteration transforms each of the item-test correlations to an item-theta correlation, of which the discrimination parameter a is shown to be a function. Comparing this response-adjusted model with the traditional Rasch model, a simulation study involving 10-, 20-, and 30-item tests showed that correlations of theta estimates with their true values were uniformly higher for this model than for the Rasch model, whereas the reverse was true regarding b estimates. A hybrid of the two models proved to have the estimation advantages of both. Particularly notable in this study is that the correlation of theta estimates with their true values was higher in the 20- item test using the response-adjusted or the hybrid model than in the 30-item test using the Rasch model for parameter estimation.
C1 USN, Postgrad Sch, Carmel, CA 93921 USA.
RP Weitzman, RA (reprint author), USN, Postgrad Sch, POB 146, Carmel, CA 93921 USA.
EM ronweitzman@redshift.com
NR 19
TC 1
Z9 1
U1 1
U2 6
PU SAGE PUBLICATIONS INC
PI THOUSAND OAKS
PA 2455 TELLER RD, THOUSAND OAKS, CA 91320 USA
SN 0013-1644
J9 EDUC PSYCHOL MEAS
JI Educ. Psychol. Meas.
PD APR
PY 2009
VL 69
IS 2
BP 216
EP 231
DI 10.1177/0013164408322022
PG 16
WC Psychology, Educational; Mathematics, Interdisciplinary Applications;
Psychology, Mathematical
SC Psychology; Mathematics
GA 420YK
UT WOS:000264324900003
ER
PT J
AU Hadjimichael, M
AF Hadjimichael, Michael
TI A fuzzy expert system for aviation risk assessment
SO EXPERT SYSTEMS WITH APPLICATIONS
LA English
DT Article
DE Fuzzy rule-based systems; Risk assessment; Aviation safety
AB The Flight Operations Risk Assessment System (FORAS) is a risk modeling methodology which represents risk factors and their interrelationships as a fuzzy expert system. A FORAS risk model provides a quantitative relative risk index representing an estimate of the cumulative effects of potential hazards on a single flight operation. FORAS systematizes the process of eliciting human expertise, provides for a natural representation of the knowledge in an expert system, and automates the process of risk assessment. The FORAS tool is valuable to airline safety departments for examining risk trends, to pilots and dispatchers for assessing risks associated with each flight, and to airline management for quantifying the effects of making safety-related changes. The quantitative relative risk index generated by FORAS allows comparisons between flights, and facilitates the communication of safety issues throughout the organization. Published by Elsevier Ltd.
C1 USN, Res Lab, Marine Meteorl Div, Monterey, CA 93943 USA.
RP Hadjimichael, M (reprint author), USN, Res Lab, Marine Meteorl Div, 7 Grace Hopper Ave, Monterey, CA 93943 USA.
EM mike.hadjimichael@nrlmry.navy.mil
FU NASA Aviation Safety Program; Naval Research Laboratory; EVA Airways;
TAP Air Portugal; Irv Statler
FX The support of the sponsors NASA Aviation Safety Program, Naval Research
Laboratory, EVA Airways, and TAP Air Portugal is gratefully
acknowledged. The FORAS project was initiated by the Flight Safety
Foundation Icarus committee, and its support, particularly via the
steering committee of John McCarthy,Jim Burin, Jack Enders, and Doug
Schwartz has been invaluable to the development of the project. The
support of Irv Statler is also gratefully acknowledged.
NR 25
TC 31
Z9 33
U1 2
U2 17
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0957-4174
J9 EXPERT SYST APPL
JI Expert Syst. Appl.
PD APR
PY 2009
VL 36
IS 3
BP 6512
EP 6519
DI 10.1016/j.eswa.2008.07.081
PG 8
WC Computer Science, Artificial Intelligence; Engineering, Electrical &
Electronic; Operations Research & Management Science
SC Computer Science; Engineering; Operations Research & Management Science
GA 413UD
UT WOS:000263817100093
ER
PT J
AU Chavko, M
Adeeb, S
Ahlers, ST
McCarron, RM
AF Chavko, Mikulas
Adeeb, Saleena
Ahlers, Stephen T.
McCarron, Richard M.
TI Protection Against Pulmonary Injury after Exposure to Blast by
N-Acetylcysteine Amide
SO FASEB JOURNAL
LA English
DT Meeting Abstract
C1 [Chavko, Mikulas; Adeeb, Saleena; Ahlers, Stephen T.; McCarron, Richard M.] USN, Med Res Ctr, Silver Spring, MD USA.
NR 0
TC 0
Z9 0
U1 0
U2 1
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 APR
PY 2009
VL 23
MA 753.4
PG 1
WC Biochemistry & Molecular Biology; Biology; Cell Biology
SC Biochemistry & Molecular Biology; Life Sciences & Biomedicine - Other
Topics; Cell Biology
GA V27OC
UT WOS:000208621506104
ER
PT J
AU Song, BK
Connery, MD
Moon-Massat, P
Pittman, RN
AF Song, Bjorn K.
Connery, Michael D.
Moon-Massat, P.
Pittman, Roland N.
TI TISSUE OXYGENATION AND OXYGEN CONSUMPTION FOLLOWING HEMORRHAGE AND
RESUSCITATION USING A HEMOGLOBIN-BASED OXYGEN CARRIER AND HUMAN SERUM
ALBUMIN
SO FASEB JOURNAL
LA English
DT Meeting Abstract
C1 [Song, Bjorn K.; Connery, Michael D.; Pittman, Roland N.] Virginia Commonwealth Univ, Richmond, VA USA.
[Moon-Massat, P.] USN, Res Ctr, Silver Spring, MD USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
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 APR
PY 2009
VL 23
MA 948.6
PG 1
WC Biochemistry & Molecular Biology; Biology; Cell Biology
SC Biochemistry & Molecular Biology; Life Sciences & Biomedicine - Other
Topics; Cell Biology
GA V27OC
UT WOS:000208621503435
ER
PT J
AU Pomerantsev, AP
Pomerantseva, OM
Camp, AS
Mukkamala, R
Goldman, S
Leppla, SH
AF Pomerantsev, Andrei P.
Pomerantseva, Olga M.
Camp, Andrew S.
Mukkamala, Radhika
Goldman, Stanley
Leppla, Stephen H.
TI PapR peptide maturation: role of the NprB protease in Bacillus cereus
569 PlcR/PapR global gene regulation
SO FEMS IMMUNOLOGY AND MEDICAL MICROBIOLOGY
LA English
DT Article
DE Bacillus cereus; Bacillus anthracis; PlcR; PapR regulation; quorum
sensing; protease; peptide
ID SIGNALING PEPTIDE; PHOSPHOLIPASE-C; LETHAL FACTOR; PLCR REGULON;
ANTHRACIS; THURINGIENSIS; VIRULENCE; SUBTILIS; BACTERIA; SEQUENCE
AB The global transcriptional regulator PlcR controls gene expression in Bacillus cereus and Bacillus thuringiensis. Activity of PlcR is regulated by PapR, the product of an ORF located immediately downstream of plcR. To be active in B. cereus, PapR must be secreted and then processed to the mature peptide by an unknown protease. This peptide is transported by an oligopeptide permease into the cell, where it activates PlcR. In this study, we show that the neutral protease B (NprB) secreted by B. cereus 569 is required for extracellular PapR maturation. Purified recombinant NprB processed the synthetic PapR propeptide to produce a set of peptides derived from the C-terminal domain of PapR. Supplementation of growth media with synthetic PapR-derived C-terminal 5-, 7-, 8- and 27-amino acid (aa) peptides caused activation of intracellular PlcR in a PapR-deficient strain of B. cereus 569 while only the 5- and 7-aa peptides activated PlcR in a nprB mutant. The maximum activity was found for the 7-mer peptide. However, even the 7-mer peptide could not activate PlcR with a C-terminal truncation of as few as 6 aa. This indicates that interactions of the C-terminal regions of both PlcR and PapR are important in transcriptional activation of the B. cereus 569 PlcR regulon.
C1 [Pomerantsev, Andrei P.; Camp, Andrew S.; Mukkamala, Radhika; Leppla, Stephen H.] NIAID, Lab Bacterial Dis, NIH, Bethesda, MD 20892 USA.
[Pomerantseva, Olga M.; Goldman, Stanley] USN, Biol Def Res Directorate, Med Res Ctr, Rockville, MD USA.
RP Leppla, SH (reprint author), NIAID, Lab Bacterial Dis, NIH, Bethesda, MD 20892 USA.
EM sleppla@niaid.nih.gov
FU Intramural Research Program of the NIH, National Institute of Allergy
and Infectious Diseases
FX We thank M. Garfield and J. Lukszo from the NIAID core facility for
peptide synthesis and protein sequencing as well as Dr Nga Nguyen from
the FDA core facility for assistance with MS analysis. We also
acknowledge T. Read for the disclosure of the B. cereus 569 chromosomal
sequences and K. Beliakov for assistance with the figure formatting.
This research was supported by the Intramural Research Program of the
NIH, National Institute of Allergy and Infectious Diseases.
NR 35
TC 9
Z9 11
U1 2
U2 10
PU WILEY-BLACKWELL PUBLISHING, INC
PI MALDEN
PA COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA
SN 0928-8244
J9 FEMS IMMUNOL MED MIC
JI FEMS Immunol. Med. Microbiol.
PD APR
PY 2009
VL 55
IS 3
BP 361
EP 377
DI 10.1111/j.1574-695X.2008.00521.x
PG 17
WC Immunology; Infectious Diseases; Microbiology
SC Immunology; Infectious Diseases; Microbiology
GA 416RA
UT WOS:000264022000009
PM 19159431
ER
PT J
AU Adiga, KC
Willauer, HD
Ananth, R
Williams, FW
AF Adiga, K. C.
Willauer, Heather D.
Ananth, Ramagopal
Williams, Frederick W.
TI Implications of droplet breakup and formation of ultra fine mist in
blast mitigation
SO FIRE SAFETY JOURNAL
LA English
DT Article
DE Blast mitigation; Droplet breakup; Energy extraction; Ultra fine mist;
Vaporization energy; Shock weakening
AB Blast-induced droplet breakup producing ultra fine water mist process was examined in view of assessing its implications on blast mitigation. An earlier review proposed that droplet breakup process, amongst other implications, may weaken the shock due to breakup energy absorption. In this work, droplet breakup energies for water droplets have been determined from the surface energies of both parent and child droplets. A breakup energy of 18J/kg was required to fragment a 0.5 mm parent droplet into 10,000 mono-dispersed child droplets. Compared to the vaporization energy of 2.25 MJ/kg, the droplet breakup energy was found not significant in weakening the shock. While the droplet deformation energy and curvature effects could increase the breakup energy, its overall contribution to the total energy extraction was not as significant as the latent heat of vaporization. Further, the analysis shows about 22-fold increase in surface area of the child droplets. The study revealed the surface-to-volume ratio of the ultra fine droplets and their vaporization timescale should be well positioned for shock energy extraction. (c) 2008 Elsevier Ltd. All rights reserved
C1 [Adiga, K. C.] NanoMist Syst LLC, Macon, GA 31206 USA.
[Willauer, Heather D.; Ananth, Ramagopal; Williams, Frederick W.] USN, Res Lab, Div Chem, Navy Technol Ctr Safety & Survivabil, Washington, DC 20375 USA.
RP Adiga, KC (reprint author), NanoMist Syst LLC, 2260 7th St, Macon, GA 31206 USA.
EM kcadiga@nanomist.com
FU Office of Naval Research (ONR) Shipboard Fire Mitigation Thrust Program
FX This work was funded as part of the Office of Naval Research (ONR)
Shipboard Fire Mitigation Thrust Program.
NR 11
TC 15
Z9 16
U1 0
U2 10
PU ELSEVIER SCI LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
SN 0379-7112
J9 FIRE SAFETY J
JI Fire Saf. J.
PD APR
PY 2009
VL 44
IS 3
BP 363
EP 369
DI 10.1016/j.firesaf.2008.08.003
PG 7
WC Engineering, Civil; Materials Science, Multidisciplinary
SC Engineering; Materials Science
GA 421ML
UT WOS:000264362900009
ER
PT J
AU Pal, S
Wu, LP
AF Pal, Subhamoy
Wu, Louisa P.
TI Pattern recognition receptors in the fly Lessons we can learn from the
Drosophila melanogaster immune system
SO FLY
LA English
DT Review
DE innate immune responses; pathogen associated molecular patterns; pattern
recognition receptors; peptidoglycan recognition proteins; Gram-negative
binding proteins; Toll-like receptors; scavenger receptors
ID TOLL-LIKE RECEPTORS; COMPLEMENT-LIKE PROTEIN; GRAM-POSITIVE BACTERIA;
NF-KAPPA-B; GENOME-WIDE ANALYSIS; PEPTIDOGLYCAN-RECOGNITION; INNATE
IMMUNITY; HOST-DEFENSE; ANOPHELES-GAMBIAE; SCAVENGER RECEPTOR
AB Drosophila have a variety of innate immune strategies for defending itself from infection, including humoral and cell mediated responses to invading microorganisms. At the front lines of these responses, are a diverse group of pattern recognition receptors that recognize pathogen associated molecular patterns. These patterns include bacterial lipopolysaccharides, peptidoglycans, and fungal beta-1,3 glucans. Some of the receptors catalytically modify the pathogenic determinant, but all are responsible for directly facilitating a signaling event that results in an immune response. Some of these events require multiple pattern recognition receptors acting sequentially to activate a pathway. In some cases, a signaling pathway may be activated by a variety of different pathogens, through parallel receptors detecting different pathogenic determinants. In this chapter, we review what is known about pattern recognition receptors in Drosophila, and how those lessons may be applied towards a broader understanding of immunity.
C1 [Wu, Louisa P.] Univ Maryland, Inst Biotechnol, Ctr Biosyst Res, College Pk, MD 20742 USA.
[Pal, Subhamoy] USN, Med Res Ctr, Viral & Rickettsial Dis Dept, Silver Spring, MD USA.
RP Wu, LP (reprint author), Univ Maryland, Inst Biotechnol, Ctr Biosyst Res, 5115 Plant Sci Bldg, College Pk, MD 20742 USA.
EM wul@umbi.umd.edu
RI Pal, Subhamoy/A-8025-2011; Pal, Subhamoy/A-9526-2015
OI Pal, Subhamoy/0000-0003-0133-8444
NR 108
TC 12
Z9 13
U1 2
U2 9
PU LANDES BIOSCIENCE
PI AUSTIN
PA 1002 WEST AVENUE, 2ND FLOOR, AUSTIN, TX 78701 USA
SN 1933-6934
J9 FLY
JI Fly
PD APR-JUN
PY 2009
VL 3
IS 2
BP 121
EP 129
PG 9
WC Biochemistry & Molecular Biology
SC Biochemistry & Molecular Biology
GA 468LA
UT WOS:000267818600003
PM 19440043
ER
PT J
AU Karle, IL
Huang, L
Venkateshwarlu, P
Sarma, AVS
Ranganathan, S
AF Karle, Isabella L.
Huang, Lulu
Venkateshwarlu, Punna
Sarma, A. V. S.
Ranganathan, Subramania
TI SUBTLE CONTROL IN SOLUTION AND CRYSTAL STRUCTURES WITH WEAK HYDROGEN
BONDS: THE UNUSUAL PROFILE OF DIMETHYL 3, 12-DIOXO-7, 8 DITHIA 4,
11-DIAZABICYCLO[12.2.2]OCTADECA-1(16), 14, 17-TRIENE 5, 10-DICARBOXYLATE
(TDA1)
SO HETEROCYCLES
LA English
DT Article
DE Crystal Structure; Solution Structure; Theoretical Computations; CH
center dot center dot center dot O, NH center dot center dot center dot
S and NH center dot center dot center dot pi Weak Bonds; Conformational
Asymmetry
ID MP2 ENERGY; GRADIENT; SYSTEMS; PEPTIDE; STORAGE
AB The structural features of the title compound were determined or examined by three diverse procedures: single crystal X-ray diffraction analysis, solution spectroscopic procedures and quantum mechanical theoretical calculations. The conformational asymmetry of the macrocycle provides the opportunity to form one strong N-H center dot center dot center dot O-C intermolecular hydrogen bond, as well as, a number of weak C-H center dot center dot center dot O-C bonds. The interior of the macrocycle has short approaches for N-H center dot center dot center dot pi and N-H center dot center dot center dot S. The many weak hydrogen bonds cooperate to form a very hard, robust crystal. Crystal parameters: C(18)H(22)N(2)O(6)S(2), P2(1)2(1)2(1), a = 5.108(1) angstrom, b = 18.948(4) angstrom, c = 21.029(3) angstrom, alpha = beta = gamma = 90 degrees. Quantum chemical calculations have provided a strong foundation for weak hydrogen bonds. Contrary to popular belief, the present work has conclusively proved that the importance of weak hydrogen bonds is perhaps underestimated.
C1 [Karle, Isabella L.; Huang, Lulu] USN, Res Lab, Struct Matter Lab, Washington, DC 20375 USA.
[Venkateshwarlu, Punna; Ranganathan, Subramania] Indian Inst Chem Technol, Discovery Lab, Hyderabad 500607, Andhra Pradesh, India.
[Sarma, A. V. S.] Indian Inst Chem Technol, Ctr NMR, Hyderabad 500607, Andhra Pradesh, India.
RP Karle, IL (reprint author), USN, Res Lab, Struct Matter Lab, Washington, DC 20375 USA.
EM isabella.karle@nrl.navy.mil; ranga@iict.res.in
FU National Institutes of Health [GM30902]; Industrial Research, New Delhi
FX We thank the Office of Naval Research and the National Institutes of
Health Grant GM30902 for supporting the work at the Naval Research
Laboratory. P.V. and S.R. are grateful to the Council of Scientific and
Industrial Research, New Delhi, for the award of a Fellowship and
financial assistance.
NR 22
TC 6
Z9 6
U1 0
U2 1
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0385-5414
J9 HETEROCYCLES
JI Heterocycles
PD APR 1
PY 2009
VL 79
BP 471
EP 486
DI 10.3987/COM-08-S(D)4
PG 16
WC Chemistry, Organic
SC Chemistry
GA 452TN
UT WOS:000266564200041
PM 19688029
ER
PT J
AU Iyer, MR
Deschamps, JR
Jacobson, AE
Rice, KC
AF Iyer, Malliga R.
Deschamps, Jeffrey R.
Jacobson, Arthur E.
Rice, Kenner C.
TI PROBES FOR NARCOTIC RECEPTOR MEDIATED PHENOMENA. 38. AN EXPEDITIOUS
SYNTHESIS OF
RAC-CIS-4a-ETHYL-2-METHYL-1,2,3,4,4a,9a-HEXAHYDROBENZOFURO[2,3-c]PYRIDIN
-6-OL AND
RAC-CIS-2-METHYL-4a-PHENETHYL-1,2,3,4,4a,9a-HEXAHYDROBENZOFURO[2,3-c]PYR
IDIN-6-OL
SO HETEROCYCLES
LA English
DT Article
DE cis-Benzofuropyridin-6-ol and Analogue; Synthesis; Structurally Rigid
Compound; C-4a Phenethyl Analogue; X-Ray Crystallographic Structure
ID OXIDE-BRIDGED 5-(META-HYDROXYPHENYL)MORPHAN; N-PHENETHYL ANALOGS;
PHENYLMORPHANS; PARKINSONISM; AFFINITY
AB A high-yielding five-step synthesis of cis-benzofuropyridin-6-ols provided an improved route to compounds with low to subnanomolar affinity at opioid receptors and high antinociceptive potency. This synthesis provided the known rac-cis-4a-etbyl-2-methyl-1,2,3,4,4a,9a-hexahydrobenzofuro[2,3c]pyridin-6-ol (1a) in high yield, and the novel rac-cis-2-methyl-4a-phenethyl-1,2,3,4,4a,9a-hexahydrobenzofuro[2,3-c]pyridin-6-ol (1b). It was achieved using NBS to prepare the key intermediate 7. Di-demethylation followed by subsequent displacement of the bromine by the phenolic ion in hot Et(3)N gave the desired 1a. The structure of la was confirmed by X-ray crystallography.
C1 [Iyer, Malliga R.; Jacobson, Arthur E.; Rice, Kenner C.] Natl Inst Drug Abuse, Drug Design & Synth Sect, Chem Biol Res Branch, Bethesda, MD 20892 USA.
[Iyer, Malliga R.; Jacobson, Arthur E.; Rice, Kenner C.] NIAAA, NIH, Dept Hlth & Human Serv, Bethesda, MD 20892 USA.
[Deschamps, Jeffrey R.] USN, Res Lab, Struct Matter Lab, Washington, DC 20375 USA.
RP Iyer, MR (reprint author), Natl Inst Drug Abuse, Drug Design & Synth Sect, Chem Biol Res Branch, 5625 Fishers Lane,Room 4N03, Bethesda, MD 20892 USA.
EM kr21f@nih.gov
FU National Institute on Drug Abuse (NIDA)
FX We would like to thank Dr. Klaus Gawrisch and Dr. Walter Teague of the
Laboratory of Membrane Biochemistry and Biophysics, NIAAA, for NMR
spectral data. The authors also express their thanks to Noel Whittaker
and Wesley White of the Laboratory of Analytical Chemistry, NIDDK, for
mass spectral data and 1H NNM spectral data. The work of the
Drug Design and Synthesis Section, CBRB, NIDA, & NIAAA, was supported by
the NIH Intramural Research Programs of the National Institute on Drug
Abuse (NIDA) and the National Institute of Alcohol Abuse and Alcoholism.
X-ray crystallographic work was supported by NIDA under contract
YI-DA6002.
NR 13
TC 4
Z9 4
U1 0
U2 1
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0385-5414
J9 HETEROCYCLES
JI Heterocycles
PD APR 1
PY 2009
VL 79
BP 1061
EP 1072
DI 10.3987/COM-09-S(D)84
PG 12
WC Chemistry, Organic
SC Chemistry
GA 452TN
UT WOS:000266564200086
PM 20101277
ER
PT J
AU Orofino, V
Goldspiel, J
Carofalo, I
Blanco, A
Fonti, S
Marzo, GA
AF Orofino, V.
Goldspiel, J.
Carofalo, I.
Blanco, A.
Fonti, S.
Marzo, G. A.
TI Evaluation of carbonate abundance in putative martian paleolake basins
SO ICARUS
LA English
DT Article
DE Mars, surface; Geological processes
ID THERMAL EMISSION SPECTROMETER; EARLY MARS; AQUEOUS SEDIMENTATION;
MERIDIANI-PLANUM; VALLES MARINERIS; CLIMATE; SURFACE; CRATER;
PRECIPITATION; SPECTROSCOPY
AB Carbonate deposits have not been found so far on Mars, although there appears to have been sufficient water to have supported their formation. Many hypotheses have been proposed in order to explain this. In the present work we explore the possibility that the missed detection of carbonate deposits on the martian surface could be simply due to the fact that the concentration of carbonates, when mixed with other materials present in the sedimentary deposits, may be below the detection limit of the various instruments used so far in this search. In the present study we consider 21 putative paleolacustrine basins and use a sediment transport model to estimate the abundance of carbonates which could be present in the sediments deposited on the basin floor. In this way we find that for all the selected basins the estimated carbonate abundances are in general less than a few percent, and such values are below (or at best comparable to) the detection limits of the spectrometers flown around Mars during the recent space missions. Furthermore, applying the sediment transport model to the well studied Eberswalde crater, we conclude that the fluvio-lacustrine activity in this basin should have lasted for a period on the order of 10(3)-10(4) years, in good agreement with previous work. Our results suggest that a hydrological cycle. able to move large volumes of water and to create relatively stable lakes, could have been active intermittently on Mars in the past, producing carbonate deposits that could escape detection by the instruments that have flown to date. (C) 2008 Elsevier Inc. All rights reserved.
C1 [Orofino, V.; Carofalo, I.; Blanco, A.; Fonti, S.; Marzo, G. A.] Univ Salento, Dipartimento Fis, I-73100 Lecce, Italy.
[Goldspiel, J.] USN, Res Lab, Div Space Sci, Washington, DC 20375 USA.
RP Orofino, V (reprint author), Univ Salento, Dipartimento Fis, Via Arnesano,CP 193, I-73100 Lecce, Italy.
EM vincenzo.orofino@le.infn.it
RI Marzo, Giuseppe/A-9765-2015
FU Italian Space paper Agency (ASI); Italian Ministry of University and
Research (MUR)
FX We thank Janice Bishop and Joshua Bandfield for their corn ments and
remarks which helped us to improve the quality of the. This research has
been partially supported by Italian Space paper Agency (ASI) and the
Italian Ministry of University and Research (MUR).
NR 73
TC 6
Z9 6
U1 0
U2 2
PU ACADEMIC PRESS INC ELSEVIER SCIENCE
PI SAN DIEGO
PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA
SN 0019-1035
J9 ICARUS
JI Icarus
PD APR
PY 2009
VL 200
IS 2
BP 426
EP 435
DI 10.1016/j.icarus.2008.11.020
PG 10
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 424NH
UT WOS:000264572900008
ER
PT J
AU Acker, J
Lyon, P
Hoge, F
Shen, S
Roffer, M
Gawlikowski, G
AF Acker, James
Lyon, Paul
Hoge, Frank
Shen, Suhung
Roffer, Mitchell
Gawlikowski, Greg
TI Interaction of Hurricane Katrina With Optically Complex Water in the
Gulf of Mexico: Interpretation Using Satellite-Derived Inherent Optical
Properties and Chlorophyll Concentration
SO IEEE GEOSCIENCE AND REMOTE SENSING LETTERS
LA English
DT Article
DE Chlorophyll; dissolved organic matter; marine vegetation; optics;
plankton; remote sensing; sea coast; sea surface
ID UPPER OCEAN RESPONSE; DISSOLVED ORGANIC-MATTER; SOUTHERN STRAITS;
MATRIX-INVERSION; RADIANCE MODEL; RETRIEVAL; RESUSPENSION; VARIABILITY;
ABSORPTION; FLORIDA
AB When Hurricane Katrina passed over southern Florida, Florida Bay and the West Florida Shelf, and into the Gulf of Mexico, empirically derived chl a increases were observed in the Tortugas Gyre circulation feature, and in adjacent waters. Analysis of the empirically derived chl a increase within the gyre has been primarily attributed to initiation of a phytoplankton bloom promoted by nutrients upwelled by Katrina's winds. Detailed analysis of inherent optical properties derived from remotely sensed radiances, however, indicated the interaction of Katrina with shallow coastal and shelf waters likely entrained waters with higher concentrations of chromophoric dissolved organic matter (CDOM) into the gyre circulation, augmenting the chl a signa. Storm-induced upwelling would also transport optically active CDOM to the surface. Increases in empirically derived chl a in the Florida coastal waters influenced by Katrina's winds were therefore partly due to increased absorption by CDOM. This analysis indicates that elevated empirically derived chl a in hurricane-influenced waters should not be unambiguously attributed to increased phytoplankton productivity, particularly in an optically complex coastal environment.
C1 [Acker, James] NASA, Goddard Space Flight Ctr, Goddard Earth Sci Data & Informat Serv Ctr Wyle I, Greenbelt, MD 20771 USA.
[Lyon, Paul] USN, Res Lab, Ocean Opt Sect 7333, Stennis Space Ctr, Stennis Space Ctr, MS 39529 USA.
[Hoge, Frank] NASA, Goddard Space Flight Ctr, Wallops Flight Facil, Ocean Sci Branch,Hydrospher & Biospher Sci Lab, Wallops Isl, VA 23337 USA.
[Shen, Suhung] George Mason Univ, Goddard Earth Sci Data & Informat Serv Ctr, NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA.
[Roffer, Mitchell; Gawlikowski, Greg] Roffers Ocean Fishing Forecasting Serv Inc, Miami, FL 33155 USA.
RP Acker, J (reprint author), NASA, Goddard Space Flight Ctr, Goddard Earth Sci Data & Informat Serv Ctr Wyle I, Greenbelt, MD 20771 USA.
EM jim.acker@nasa.gov
NR 32
TC 9
Z9 9
U1 1
U2 25
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 1545-598X
EI 1558-0571
J9 IEEE GEOSCI REMOTE S
JI IEEE Geosci. Remote Sens. Lett.
PD APR
PY 2009
VL 6
IS 2
BP 209
EP 213
DI 10.1109/LGRS.2008.2007658
PG 5
WC Geochemistry & Geophysics; Engineering, Electrical & Electronic; Remote
Sensing; Imaging Science & Photographic Technology
SC Geochemistry & Geophysics; Engineering; Remote Sensing; Imaging Science
& Photographic Technology
GA 435XG
UT WOS:000265376000007
ER
PT J
AU Ando, B
Baglio, S
Bulsara, A
Marletta, V
Savalli, N
AF Ando, Bruno
Baglio, Salvatore
Bulsara, Adi
Marletta, Vincenzo
Savalli, Nicolo
TI E-Field Ferroelectric Sensors: Modeling and Simulation
SO IEEE INSTRUMENTATION & MEASUREMENT MAGAZINE
LA English
DT Article
ID BEHAVIOR
C1 [Ando, Bruno] Catania Univ, Dept Elect & Elect Measurement DIEES, Catania, Italy.
[Baglio, Salvatore] Univ Messina, Messina, Italy.
[Baglio, Salvatore; Marletta, Vincenzo; Savalli, Nicolo] Catania Univ, DEES, Catania, Italy.
[Bulsara, Adi] USN, Space & Naval Warfare Syst Ctr, San Diego, CA 92152 USA.
RP Ando, B (reprint author), Catania Univ, Dept Elect & Elect Measurement DIEES, Catania, Italy.
EM bruno.ando@ieee.org
RI Baglio, Salvatore/I-3174-2012; Marletta, Vincenzo/K-2050-2016
OI Baglio, Salvatore/0000-0002-6068-2846; Marletta,
Vincenzo/0000-0001-5605-3433
NR 10
TC 4
Z9 4
U1 0
U2 1
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 1094-6969
J9 IEEE INSTRU MEAS MAG
JI IEEE Instrum. Meas. Mag.
PD APR
PY 2009
VL 12
IS 2
BP 31
EP 37
PG 7
WC Engineering, Electrical & Electronic; Instruments & Instrumentation
SC Engineering; Instruments & Instrumentation
GA 431VD
UT WOS:000265091400006
ER
PT J
AU Blunt, SD
Shackelford, AK
Gerlach, K
Smith, KJ
AF Blunt, Shannon D.
Shackelford, Aaron K.
Gerlach, Karl
Smith, Kevin J.
TI Doppler Compensation & Single Pulse Imaging using Adaptive Pulse
Compression
SO IEEE TRANSACTIONS ON AEROSPACE AND ELECTRONIC SYSTEMS
LA English
DT Article
ID CODES
AB The effects of target Doppler are addressed in relation to adaptive receive processing for radar pulse compression. To correct for Doppler-induced filter mismatch over a single pulse, the Doppler-compensated adaptive pulse compression (DC-APC) algorithm is presented whereby the respective Doppler shifts for large target returns are jointly estimated with the illuminated range profile and subsequently incorporated into the original APC adaptive receive filter formulation. As a result, the Doppler-mismatch-induced range sidelobes can be suppressed thereby regaining a significant portion of the sensitivity improvement that is possible when applying adaptive pulse compression (APC) without the existence of significant Doppler mismatch. In contrast, instead of compensating for Doppler mismatch, the single pulse imaging (SPI) algorithm generalizes the APC formulation for a bank of Doppler-shifted matched filters thereby producing a sidelobe-suppressed range-Doppler image from the return signal of a single radar pulse which is applicable for targets with substantial variation in Doppler. Both techniques are based on the recently proposed APC algorithm and its generalization, the multistatic adaptive pulse compression (MAPC) algorithm, which have been shown to be effective for the suppression of pulse compression range sidelobes thus dramatically increasing the sensitivity of pulse compression radar.
C1 [Blunt, Shannon D.; Smith, Kevin J.] Univ Kansas, Dept Elect Engn & Comp Sci, Lawrence, KS 66045 USA.
[Shackelford, Aaron K.; Gerlach, Karl] USN, Res Lab, Div Radar, Washington, DC 20375 USA.
RP Blunt, SD (reprint author), Univ Kansas, Dept Elect Engn & Comp Sci, 1520 W 15th St,Eaton Hall,Rm 3034, Lawrence, KS 66045 USA.
EM sdblunt@eecs.ku.edu
FU United States Office of Naval Research
FX This work was supported by the United States Office of Naval Research
ONR 31.
NR 18
TC 14
Z9 19
U1 0
U2 3
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855 USA
SN 0018-9251
J9 IEEE T AERO ELEC SYS
JI IEEE Trans. Aerosp. Electron. Syst.
PD APR
PY 2009
VL 45
IS 2
BP 647
EP 659
PG 13
WC Engineering, Aerospace; Engineering, Electrical & Electronic;
Telecommunications
SC Engineering; Telecommunications
GA 469ZQ
UT WOS:000267941300017
ER
PT J
AU Tague, P
Slater, D
Rogers, J
Poovendran, R
AF Tague, Patrick
Slater, David
Rogers, Jason
Poovendran, Radha
TI Evaluating the Vulnerability of Network Traffic Using Joint Security and
Routing Analysis
SO IEEE TRANSACTIONS ON DEPENDABLE AND SECURE COMPUTING
LA English
DT Article
DE Wireless networks; security; routing; node capture attacks; adversary
models
AB Joint analysis of security and routing protocols in wireless networks reveals vulnerabilities of secure network traffic that remain undetected when security and routing protocols are analyzed independently. We formulate a class of continuous metrics to evaluate the vulnerability of network traffic as a function of security and routing protocols used in wireless networks. We develop two complementary vulnerability definitions using set theoretic and circuit theoretic interpretations of the security of network traffic, allowing a network analyst or an adversary to determine weaknesses in the secure network. We formalize node capture attacks using the vulnerability metric as a nonlinear integer programming minimization problem and propose the GNAVE algorithm, a Greedy Node capture Approximation using Vulnerability Evaluation. We discuss the availability of security parameters to the adversary and show that unknown parameters can be estimated using probabilistic analysis. We demonstrate vulnerability evaluation using the proposed metrics and node capture attacks using the GNAVE algorithm through detailed examples and simulation.
C1 [Tague, Patrick; Slater, David; Poovendran, Radha] Univ Washington, Dept Elect Engn, NSL, Seattle, WA 98195 USA.
[Rogers, Jason] USN, Res Lab, Div Informat Technol, Ctr High Assurance Comp Syst, Washington, DC 20375 USA.
RP Tague, P (reprint author), Univ Washington, Dept Elect Engn, NSL, Paul Allen Ctr Room AE100R,Campus Box 352500, Seattle, WA 98195 USA.
EM tague@u.washington.edu; dmslater@u.washington.edu;
rogers@itd.nrl.navy.mil; rp3@u.washington.edu
OI Tague, Patrick/0000-0002-7561-6112
FU ONR YIP [N00014-04-1-0479]; ARO PECASE [W911NF-05-1-0491]; ARL CTA
[DAAD19-01-2-001]; ARO MURI [W911NF-07-1-0287]; US Army Research
Laboratory [DAAD19-01-2-0011]
FX This work was supported in part by the following grants: ONR YIP,
N00014-04-1-0479; ARO PECASE, W911NF-05-1-0491; ARL CTA,
DAAD19-01-2-001; and ARO MURI, W911NF-07-1-0287. This document was
prepared through collaborative participation in the Communications and
Networks Consortium sponsored by the US Army Research Laboratory under
the Collaborative Technology Alliance Program, DAAD19-01-2-0011. The US
Government is authorized to reproduce and distribute reprints for
Government purposes notwithstanding any copyright notation thereon. The
views and conclusions contained in this document are those of the author
and should not be interpreted as representing the official policies,
either expressed or implied, of the Army Research Laboratory or the US
Government. A preliminary version of this material appeared at the 27th
IEEE International Conference on Computer Communications (INFOCOM '08)
[1].
NR 22
TC 7
Z9 8
U1 0
U2 1
PU IEEE COMPUTER SOC
PI LOS ALAMITOS
PA 10662 LOS VAQUEROS CIRCLE, PO BOX 3014, LOS ALAMITOS, CA 90720-1314 USA
SN 1545-5971
EI 1941-0018
J9 IEEE T DEPEND SECURE
JI IEEE Trans. Dependable Secur. Comput.
PD APR-JUN
PY 2009
VL 6
IS 2
BP 111
EP 123
DI 10.1109/TDSC.2008.60
PG 13
WC Computer Science, Hardware & Architecture; Computer Science, Information
Systems; Computer Science, Software Engineering
SC Computer Science
GA 441QA
UT WOS:000265782700003
ER
PT J
AU Cramer, AM
Sudhoff, SD
Zivi, EL
AF Cramer, Aaron M.
Sudhoff, Scott D.
Zivi, Edwin L.
TI Evolutionary Algorithms for Minimax Problems in Robust Design
SO IEEE TRANSACTIONS ON EVOLUTIONARY COMPUTATION
LA English
DT Article
DE Coevolution; evolutionary algorithms; minimax optimization; robust
design
ID OPTIMIZATION
AB Many robust design problems can be described by minimax optimization problems. Classical techniques for solving these problems have typically been limited to a discrete form of the problem. More recently, evolutionary algorithms, particularly coevolutionary optimization techniques, have been applied to minimax problems. A new method of solving minimax optimization problems using evolutionary algorithms is proposed. The performance of this algorithm is shown to compare favorably with the existing methods on test problems. The performance of the algorithm is demonstrated on a robust pole placement problem and a ship engineering plant design problem.
C1 [Cramer, Aaron M.] PC Krause & Associates, W Lafayette, IN 47906 USA.
[Sudhoff, Scott D.] Purdue Univ, W Lafayette, IN 47907 USA.
[Zivi, Edwin L.] USN Acad, Annapolis, MD 21402 USA.
RP Cramer, AM (reprint author), PC Krause & Associates, W Lafayette, IN 47906 USA.
EM crarner@pcka.com; sudhoff@purdue.edu; zivi@usna.edu
FU Office of Naval Research [N00014-06-1-0314, N00014-02-1-0623]
FX This work was supported in part by the Office of Naval Research under
Contract N00014-06-1-0314 and Contract N00014-02-1-0623.
NR 26
TC 17
Z9 17
U1 0
U2 3
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855 USA
SN 1089-778X
J9 IEEE T EVOLUT COMPUT
JI IEEE Trans. Evol. Comput.
PD APR
PY 2009
VL 13
IS 2
BP 444
EP 453
DI 10.1109/TEVC.2008.2004422
PG 10
WC Computer Science, Artificial Intelligence; Computer Science, Theory &
Methods
SC Computer Science
GA 431VI
UT WOS:000265091900015
ER
PT J
AU Cameron, WL
Rais, H
AF Cameron, William L.
Rais, Houra
TI Polarization Symmetric Scatterer Metric Space
SO IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING
LA English
DT Article
DE Coherent decomposition; conservative; polarimetry; polarization; radar
polarimetry; radar scattering; radar target classification; symmetric
scatterer; synthetic aperture radar (SAR)
ID RADAR POLARIMETRY; DECOMPOSITION; CLASSIFICATION; MATRIX; SPHERE; SAR
AB The coherent polarization scattering matrix decomposition presented in Cameron et al. brought attention to the importance of Symmetric Scatterer Space, the space of scattering matrices corresponding to symmetric scatterers. Each symmetric scatterer scattering matrix can be associated with a complex number z, the scatterer-type parameter, where vertical bar z vertical bar <= 1. A distance measure, d(z(1), z(2)), was defined on Symmetric Scatterer Space providing a means of comparing scattering matrices. It will be demonstrated that Symmetric Scatterer Space is a metric space with metric d(z(1), z(2)). A new mapping of the Unit Disc representation of Symmetric Scatterer Space to a sphere is also presented along with a metric on the sphere, d(s) (theta(1), phi(1); theta(2), phi(2)), that is equivalent to the metric d(z(1), z(2)) on the Unit Disc.
C1 [Rais, Houra] USN, Dahlgren Div, Ctr Surface Warfare, Dahlgren, VA 22448 USA.
EM houra.rais@navy.mil
NR 24
TC 6
Z9 6
U1 0
U2 2
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855 USA
SN 0196-2892
J9 IEEE T GEOSCI REMOTE
JI IEEE Trans. Geosci. Remote Sensing
PD APR
PY 2009
VL 47
IS 4
BP 1097
EP 1107
DI 10.1109/TGRS.2008.2007962
PG 11
WC Geochemistry & Geophysics; Engineering, Electrical & Electronic; Remote
Sensing; Imaging Science & Photographic Technology
SC Geochemistry & Geophysics; Engineering; Remote Sensing; Imaging Science
& Photographic Technology
GA 425IM
UT WOS:000264630200011
ER
PT J
AU Avramov-Zamurovic, S
Lee, RD
AF Avramov-Zamurovic, Svetlana
Lee, Rae Duk
TI A High-Stability Capacitance Sensor System and Its Evaluation
SO IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
LA English
DT Article; Proceedings Paper
CT Conference on Precision Electromagnetic Measurements
CY JUN 08-13, 2008
CL Broomfield, CO
DE Capacitance measurement; capacitance sensor; electric fleld simulation;
humidity; temperature variations
AB A new capacitance sensor system was developed with a microcontroller, commercial humidity and temperature sensors, a capacitance-to-digital converter, and a custom-built capacitance sensor. The performance of the system was evaluated by simulation and testing of the prototype. The impact of variations of ambient conditions on the system performance was analyzed, and a model for correcting the humidity and temperature influence wits developed. Based on the experimental results obtained in an uncontrolled environment using a standard capacitor of 1 pF, the 24-h stability of the system was estimated to be within 30 parts in 10(6). The high stability and sensitivity of the system allow its effective use in object-detection applications. Several sensors were constructed and evaluated while sensing various materials under different scenarios.
C1 [Avramov-Zamurovic, Svetlana; Lee, Rae Duk] Natl Inst Stand & Technol, Gaithersburg, MD 20899 USA.
[Avramov-Zamurovic, Svetlana] USN Acad, Annapolis, MD 21402 USA.
RP Avramov-Zamurovic, S (reprint author), USN Acad, Annapolis, MD 21402 USA.
EM avramov@usna.edu; rdlee@nist.gov
NR 14
TC 14
Z9 16
U1 0
U2 2
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 0018-9456
EI 1557-9662
J9 IEEE T INSTRUM MEAS
JI IEEE Trans. Instrum. Meas.
PD APR
PY 2009
VL 58
IS 4
BP 955
EP 961
DI 10.1109/TIM.2008.2007039
PG 7
WC Engineering, Electrical & Electronic; Instruments & Instrumentation
SC Engineering; Instruments & Instrumentation
GA 419VC
UT WOS:000264246800039
ER
PT J
AU Fossati, D
Di Eugenio, B
Brown, CW
Ohlsson, S
Cosejo, DG
Chen, L
AF Fossati, Davide
Di Eugenio, Barbara
Brown, Christopher W.
Ohlsson, Stellan
Cosejo, David G.
Chen, Lin
TI Supporting Computer Science Curriculum: Exploring and Learning Linked
Lists with iList
SO IEEE TRANSACTIONS ON LEARNING TECHNOLOGIES
LA English
DT Article
DE Computer-assisted instruction; computer science education; education;
evaluation/methodology; constraint-based modeling; intelligent tutoring
systems
AB We developed two versions of a system, called iList, that helps students learn linked lists, an important topic in computer science curricula. The two versions of iList differ on the level of feedback they can provide to the students, specifically in the explanation of syntax and execution errors. The system has been fielded in multiple classrooms in two institutions. Our results indicate that iList is effective, is considered interesting and useful by the students, and its performance is getting closer to the performance of human tutors. Moreover, the system is being developed in the context of a study of human tutoring, which is guiding the evolution of iList with empirical evidence of effective tutoring.
C1 [Fossati, Davide; Di Eugenio, Barbara; Chen, Lin] Univ Illinois, Dept Comp Sci, Chicago, IL 60607 USA.
[Brown, Christopher W.] USN Acad, Dept Comp Sci, Annapolis, MD 21402 USA.
[Ohlsson, Stellan; Cosejo, David G.] Univ Illinois, Dept Psychol, Chicago, IL 60607 USA.
RP Fossati, D (reprint author), Univ Illinois, Dept Comp Sci, 1109 S Racine Ave,Apartment 1F, Chicago, IL 60607 USA.
EM davide@fossati.us; bdieugen@cs.uic.edu; wcbrown@usna.edu;
stellan@uic.edu; dcosej1@uic.edu; linchen04@gmail.com
FU US Office of Naval Research [N00014-07-1-0040]; Graduate College of the
University of Illinois at Chicago; US National Science Foundation
[ALT-0536968, IIS-0133123]
FX This work is supported by Award N00014-07-1-0040 from the US Office of
Naval Research, the 2008/2009 Dean's Scholar Award from the Graduate
College of the University of Illinois at Chicago, and additionally by
Awards ALT-0536968 and IIS-0133123 from the US National Science
Foundation.
NR 44
TC 11
Z9 11
U1 0
U2 9
PU IEEE COMPUTER SOC
PI LOS ALAMITOS
PA 10662 LOS VAQUEROS CIRCLE, PO BOX 3014, LOS ALAMITOS, CA 90720-1314 USA
SN 1939-1382
J9 IEEE T LEARN TECHNOL
JI IEEE Trans. Learn. Technol.
PD APR-JUN
PY 2009
VL 2
IS 2
BP 107
EP 120
DI 10.1109/TLT.2009.21
PG 14
WC Computer Science, Interdisciplinary Applications; Education &
Educational Research
SC Computer Science; Education & Educational Research
GA V16CP
UT WOS:000207848000005
ER
PT J
AU Engel, TG
Neri, JM
Veracka, MJ
AF Engel, Thomas G.
Neri, Jesse M.
Veracka, Michael J.
TI Solid-Projectile Helical Electromagnetic Launcher
SO IEEE TRANSACTIONS ON PLASMA SCIENCE
LA English
DT Article
DE Coilguns; electromagnetic launching; linear motors; railguns
ID BRUSH COMMUTATION; COILGUNS; DESIGN
AB Helical electromagnetic launchers (HEMLs) can operate at significantly lower currents and higher efficiency in comparison to conventional railgun and induction coilgun launchers. The HEML's versatility is due, in part, to its large inductance gradient which is typically two to three orders of magnitude greater than a conventional railgun and can be tailored to almost any value in that range. Historically, however, HEMLs were not considered practical since they consisted of a hollow projectile (i.e., armature that is accelerated on the outside of-a stator coil). This investigation demonstrates, for the first time, a 40-mm bore x 750-mm length solid-projectile HEML, where the armature is accelerated on the inside of a stator coil. The goal of this paper is to demonstrate the practicality of solid-projectile HEML concept and to measure its performance. Numerous successful tests were conducted. The highest velocity measured for a 170-g projectile was 64 m/s.
C1 [Engel, Thomas G.] Univ Missouri, Dept Elect & Comp Engn, Columbia, MO 65211 USA.
[Neri, Jesse M.] USN, Res Lab, Div Plasma Phys, Washington, DC 20375 USA.
[Veracka, Michael J.] USN, Res Lab, Tact Elect Warfare Div, Washington, DC 20375 USA.
RP Engel, TG (reprint author), Univ Missouri, Dept Elect & Comp Engn, Columbia, MO 65211 USA.
EM engelt@missouri.edu; jesse.neri@nrl.navy.mil; veracka@nrl.navy.mil
FU U.S. Naval Research Laboratory [N00173-02-C-2012]
FX This work was supported in part by the U.S. Naval Research Laboratory
under Contract N00173-02-C-2012.
NR 14
TC 14
Z9 14
U1 3
U2 9
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855 USA
SN 0093-3813
J9 IEEE T PLASMA SCI
JI IEEE Trans. Plasma Sci.
PD APR
PY 2009
VL 37
IS 4
BP 603
EP 607
DI 10.1109/TPS.2009.2012714
PG 5
WC Physics, Fluids & Plasmas
SC Physics
GA 435XK
UT WOS:000265376400010
ER
PT J
AU Engel, TG
Neri, JM
Veracka, MJ
AF Engel, Thomas G.
Neri, Jesse M.
Veracka, Michael J.
TI The Maximum Theoretical Efficiency of Constant Inductance Gradient
Electromagnetic Launchers
SO IEEE TRANSACTIONS ON PLASMA SCIENCE
LA English
DT Article
DE Coilguns; electromagnetic launching; linear motors; railguns
ID RAILGUN
AB The maximum theoretical efficiency of constant inductance gradient electromagnetic launchers (EMLs) is analyzed and discussed. The maximum theoretical efficiency is a parameter needed to calculate the EMUS efficiency. Constant inductance gradient EMLs include the conventional railgun, the augmented railgun, and the conventional helical launcher. The maximum theoretical efficiency of an EML is dependent on its geometry and the manner, or mode, in which it is powered. In the lossless case, the conventional railgun, the augmented railgun, and the conventional helical launcher are capable of 50% maximum efficiency when operating in constant current (CC) mode. Conventional and augmented railguns can achieve 100% maximum efficiency when operating in zero exit-current mode. While zero exit-current mode promotes high efficiency, this mode can reduce EML lifetime since it requires current levels much higher than those found in CC mode. The high-efficiency helical launcher, presented and analyzed here for the first time, combines 100% maximum theoretical efficiency with the low-current benefits of constant-current mode.
C1 [Engel, Thomas G.] Univ Missouri, Dept Elect & Comp Engn, Columbia, MO 65211 USA.
[Neri, Jesse M.] USN, Res Lab, Div Plasma Phys, Washington, DC 20375 USA.
[Veracka, Michael J.] USN, Res Lab, Tact Elect Warfare Div, Washington, DC 20375 USA.
RP Engel, TG (reprint author), Univ Missouri, Dept Elect & Comp Engn, Columbia, MO 65211 USA.
EM engelt@missouri.edu; jesse.neri@nrl.navy.mil; veracka@nrl.navy.mil
NR 18
TC 20
Z9 23
U1 2
U2 8
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855 USA
SN 0093-3813
J9 IEEE T PLASMA SCI
JI IEEE Trans. Plasma Sci.
PD APR
PY 2009
VL 37
IS 4
BP 608
EP 614
DI 10.1109/TPS.2009.2014379
PG 7
WC Physics, Fluids & Plasmas
SC Physics
GA 435XK
UT WOS:000265376400011
ER
PT J
AU Piquette, JC
McLaughlin, EA
AF Piquette, Jean C.
McLaughlin, Elizabeth A.
TI The Use of Real or Complex Coupling Coefficients for Lossy Piezoelectric
Materials
SO IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL
LA English
DT Article
AB Two competing approaches for calculating coupling coefficients for lossy piezoelectric materials, one producing a real result and the other a complex result, are compared and analyzed. It is found that the complex coupling coefficient suffers from mathematical difficulties, which the real coupling coefficient does not exhibit. Moreover, it is pointed out that a prediction made by the complex coupling coefficient theory conflicts with experiment while the corresponding real coupling coefficient theory prediction does not. When a coupling coefficient of interest has been computed from the real coupling coefficient theory using piezoelectric equations having intensive independent variables, the resulting expression has the same algebraic form as the corresponding static coupling coefficient formula. Moreover, only the real parts of the piezoelectric, elastic, and dielectric material properties appear.
C1 [Piquette, Jean C.; McLaughlin, Elizabeth A.] USN, Undersea Warfare Ctr, Newport, RI USA.
RP Piquette, JC (reprint author), USN, Undersea Warfare Ctr, Newport, RI USA.
EM PiquetteJC@npt.nuwc.navy.mil
NR 7
TC 2
Z9 2
U1 0
U2 1
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855 USA
SN 0885-3010
J9 IEEE T ULTRASON FERR
JI IEEE Trans. Ultrason. Ferroelectr. Freq. Control
PD APR
PY 2009
VL 56
IS 4
BP 821
EP 826
DI 10.1109/TUFFC.2009.1105
PG 6
WC Acoustics; Engineering, Electrical & Electronic
SC Acoustics; Engineering
GA 419UY
UT WOS:000264246400015
PM 19406711
ER
PT J
AU Robertson, MJ
Singhose, WE
AF Robertson, M. J.
Singhose, W. E.
TI Robust discrete-time deflection-limiting commands for flexible systems
SO IET CONTROL THEORY AND APPLICATIONS
LA English
DT Article
ID INPUT SHAPERS; SPACECRAFT; VIBRATION
AB Properly shaped reference commands can greatly improve the performance of flexible systems. However, command profiles that move a system without residual vibration while simultaneously limiting transient deflection are very challenging to create. If the command generation problem is formulated and solved in the continuous-time domain, then a non-linear optimisation will generally be required to produce the command. The authors describe a method for creating deflection-limiting commands in the discrete-time domain. The major advantage of this method is that the problem is solved via linear optimisation. This reduces the computational complexity required to create deflection-limiting commands. Additionally, linear robustness constraints can be formulated, allowing for the development of robust deflection-limiting commands. The characteristics of the command profiles are presented as a function of transient deflection limit and the move distance. Experiments performed with an industrial bridge crane verify the usefulness of the proposed approach.
C1 [Robertson, M. J.] USN Acad, Weapons & Syst Engn Dept, Annapolis, MD 21402 USA.
[Singhose, W. E.] Georgia Inst Technol, Dept Mech Engn, Atlanta, GA 30332 USA.
RP Robertson, MJ (reprint author), USN Acad, Weapons & Syst Engn Dept, Annapolis, MD 21402 USA.
EM mroberts@usna.edu
NR 21
TC 5
Z9 6
U1 0
U2 4
PU INST ENGINEERING TECHNOLOGY-IET
PI HERTFORD
PA MICHAEL FARADAY HOUSE SIX HILLS WAY STEVENAGE, HERTFORD SG1 2AY, ENGLAND
SN 1751-8644
J9 IET CONTROL THEORY A
JI IET Contr. Theory Appl.
PD APR
PY 2009
VL 3
IS 4
BP 473
EP 480
DI 10.1049/iet-cta.2007.0276
PG 8
WC Automation & Control Systems; Engineering, Electrical & Electronic;
Instruments & Instrumentation
SC Automation & Control Systems; Engineering; Instruments & Instrumentation
GA 433BG
UT WOS:000265177900012
ER
PT J
AU Dharmasena, K
Queheillalt, D
Wadley, H
Chen, Y
Dudt, P
Knight, D
Wei, Z
Evans, A
AF Dharmasena, Kumar
Queheillalt, Doug
Wadley, Haydn
Chen, Yungchia
Dudt, Philip
Knight, David
Wei, Zhensong
Evans, Anthony
TI Dynamic response of a multilayer prismatic structure to impulsive loads
incident from water
SO INTERNATIONAL JOURNAL OF IMPACT ENGINEERING
LA English
DT Article
DE Sandwich panels; Multilayer corrugated core; Constitutive law; Impulsive
loading
ID METALLIC SANDWICH PANELS; CONSTITUTIVE MODEL; HONEYCOMB; CORES;
DEFORMATION; PERFORMANCE; BLAST; PLATES; BEAMS
AB The dynamic crush response of a low relative density, multilayered corrugated core is investigated by combining insights from experiments and 3D finite element simulations. The test structures have been fabricated from 304 stainless steel corrugations with 0 degrees/90 degrees lay-up orientation and bonded by means of a transient liquid phase method. Characterization of the dynamic crushing of these structures has revealed that at low rates, interlayer interactions induce a buckling-dominated soft response. This softness is diminished at high rates by inertial stabilization and the response of the structure transitions to yield-dominated behavior. Unidirectional dynamic crushing experiments conducted using a dynamic test facility reveal a soft response, consistent with lower rate crushing mechanisms. The 3D simulation predictions of crushing strain, pulse amplitude/duration and impulse delivery rate correspond closely with the measurements. The application of core homogenization schemes has revealed that by calibrating with a multilayer unit cell, high fidelity continuum level predictions are possible. Moreover, even simplified hardening curves based on equivalent energy absorption provide remarkably accurate predictions of the crush strains and the impulse transmitted through the core. The multilayered structures investigated here significantly reduced the transmitted pressures of an impulsive load. (c) 2008 Elsevier Ltd. All rights reserved.
C1 [Dharmasena, Kumar; Queheillalt, Doug; Wadley, Haydn] Univ Virginia, Dept Mat Sci & Engn, Charlottesville, VA 22904 USA.
[Chen, Yungchia; Dudt, Philip; Knight, David] USN, Ctr Surface Warfare, Carderock, MD 20817 USA.
[Wei, Zhensong; Evans, Anthony] Univ Calif Santa Barbara, Dept Mat, Santa Barbara, CA 93106 USA.
RP Dharmasena, K (reprint author), Univ Virginia, Dept Mat Sci & Engn, Charlottesville, VA 22904 USA.
EM kumar@virginia.edu
NR 27
TC 37
Z9 38
U1 1
U2 16
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0734-743X
J9 INT J IMPACT ENG
JI Int. J. Impact Eng.
PD APR
PY 2009
VL 36
IS 4
BP 632
EP 643
DI 10.1016/j.ijimpeng.2008.06.002
PG 12
WC Engineering, Mechanical; Mechanics
SC Engineering; Mechanics
GA 411BL
UT WOS:000263622600008
ER
PT J
AU Kennedy, WG
Bugajska, MD
Harrison, AM
Trafton, JG
AF Kennedy, William G.
Bugajska, Magdalena D.
Harrison, Anthony M.
Trafton, J. Gregory
TI "Like-Me" Simulation as an Effective and Cognitively Plausible Basis for
Social Robotics
SO INTERNATIONAL JOURNAL OF SOCIAL ROBOTICS
LA English
DT Article
DE ACT-R; Theory of Mind; Embodied cognition; "Like-me" simulation;
Cognitive plausibility
AB We present a successful design approach for social robotics based on a computational cognitive architecture and mental simulation. We discuss an approach to a Theory of Mind known as a "like-me" simulation in which the agent uses its own knowledge and capabilities as a model of another agent to predict that agent's actions. We present three examples of a "like-me" mental simulation in a social context implemented in the embodied version of the Adaptive Control of Thought-Rational (ACT-R) cognitive architecture, ACT-R/E (for ACT-R Embodied). Our examples show the efficacy of a simulation approach in modeling perspective taking (identifying another's left or right hand), teamwork (simulating a teammate for better team performance), and dominant-submissive social behavior (primate social experiments). We conclude with a discussion of the cognitive plausibility of this approach and our conclusions.
C1 [Kennedy, William G.; Bugajska, Magdalena D.; Harrison, Anthony M.; Trafton, J. Gregory] Naval Res Lab, Washington, DC 20375 USA.
RP Kennedy, WG (reprint author), Naval Res Lab, 4555 Overlook Ave SW, Washington, DC 20375 USA.
EM WKennedy@GMU.edu; Magdalena.Bugajska@NRL.Navy.mil;
Anthony.Harrison.ctr@NRL.Navy.mil; Greg.Trafton@NRL.Navy.mil
FU Office of Naval Research [N001406WZ20001, N0001406WR20156]; National
Research Council
FX We would like to thank the anonymous reviewers whose questions and
suggestions prompted us to develop this work beyond the original
implementation of the ideas presented here. A portion of this work, the
section on teamwork, was reported previously using a similar, but less
cognitively plausible approach [28]. Our work benefited from discussions
with Dan Bothell and the vision work of Ben Fransen and robotics of
William Adams and Alan Schultz. This work was performed while the first
and third authors held National Research Council Research Associateship
Awards and was partially supported by the Office of Naval Research under
job order numbers N001406WZ20001 and N0001406WR20156. The views and
conclusions contained in this document should not be interpreted as
necessarily representing official policies, either expressed or implied,
of the US Navy.
NR 60
TC 10
Z9 10
U1 3
U2 4
PU SPRINGER
PI DORDRECHT
PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS
SN 1875-4791
EI 1875-4805
J9 INT J SOC ROBOT
JI Int. J. Soc. Robot.
PD APR
PY 2009
VL 1
IS 2
BP 181
EP 194
DI 10.1007/s12369-009-0014-6
PG 14
WC Robotics
SC Robotics
GA V31ON
UT WOS:000208893000005
ER
PT J
AU Zhuang, Y
Ural, SO
Rajapurkar, A
Tuncdemir, S
Amin, A
Uchino, K
AF Zhuang, Yuan
Ural, Seyit O.
Rajapurkar, Aditya
Tuncdemir, Safakcan
Amin, Ahmed
Uchino, Kenji
TI Derivation of Piezoelectric Losses from Admittance Spectra
SO JAPANESE JOURNAL OF APPLIED PHYSICS
LA English
DT Article
ID ANTIRESONANCE FREQUENCY; LOSS MECHANISMS; TRANSDUCERS
AB High power density piezoelectrics are required to miniaturize devices such as ultrasonic motors, transformers, and sound projectors. The power density is limited by the heat generation in piezoelectrics, therefore, clarification of the loss mechanisms is necessary. This paper provides a methodology to determine the electromechanical losses, i.e., dielectric, elastic and piezoelectric loss factors in piezoelectrics by means of a detailed analysis of the admittance/impedance spectra. This method was applied to determine the piezoelectric losses for lead zirconate titanate ceramics and lead magnesium niobate-lead titanate single crystals. The analytical solution provides a new method for obtaining the piezoelectric loss factor, which is usually neglected in practice by transducer designers. Finite element simulation demonstrated the importance of piezoelectric losses to yield a more accurate fitting to the experimental data. A phenomenological model based on two phase-shifts and the Devonshire theory of a polarizable-deformable insulator is developed to interpret the experimentally observed magnitudes of the mechanical quality factor at resonance and anti-resonance. (c) 2009 The Japan Society of Applied Physics
C1 [Zhuang, Yuan; Ural, Seyit O.; Rajapurkar, Aditya; Tuncdemir, Safakcan; Uchino, Kenji] Penn State Univ, Mat Res Inst, Int Ctr Actuators & Transducers, University Pk, PA 16802 USA.
[Amin, Ahmed] Naval Undersea Warfare Ctr, Newport, RI 02841 USA.
RP Zhuang, Y (reprint author), Penn State Univ, Mat Res Inst, Int Ctr Actuators & Transducers, University Pk, PA 16802 USA.
FU Office of Naval Research, U.S.A. [N00014-99-1-0754]
FX This work was supported by the Office of Naval Research, U.S.A. through
the Contract N00014-99-1-0754. The authors also would like to thank
Professor Ho-Yong Lee, Ceracomp Co., Ltd., Korea, for providing single
crystals.
NR 14
TC 20
Z9 21
U1 3
U2 12
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 0021-4922
J9 JPN J APPL PHYS
JI Jpn. J. Appl. Phys.
PD APR
PY 2009
VL 48
IS 4
AR 041401
DI 10.1143/JJAP.48.041401
PN 1
PG 6
WC Physics, Applied
SC Physics
GA 439UK
UT WOS:000265652600020
ER
PT J
AU Rath, BB
AF Rath, Bhakta B.
TI Harvesting Alternate Energies from Our Planet
SO JOM
LA English
DT Article
AB Recent price fluctuations have focused attention on the phenomenal increase of global energy consumption in recent years. We have almost reached a peak in global oil production. Total world consumption of oil will rise by nearly 60% between 1999 and 2020. In 1999 consumption was 86 million barrels of oil per day, which has reached a peak of production extracted from most known oil reserves. These projections, if accurate, will present an unprecedented crisis to the global economy and industry. As an example, in the United States, nearly 40% of energy usage is provided by petroleum, of which nearly a third is used in transportation. An aggressive search for alternate energy sources, both renewable and nonrenewable, is vital. This article will review national and international perspectives on the exploration of alternate energies with a focus on energy derivable from the ocean.
C1 USN, Res Lab, Washington, DC 20375 USA.
RP Rath, BB (reprint author), USN, Res Lab, 4555 Overlook Ave SW, Washington, DC 20375 USA.
NR 22
TC 0
Z9 0
U1 0
U2 7
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 1047-4838
J9 JOM-US
JI JOM
PD APR
PY 2009
VL 61
IS 4
BP 73
EP 78
PG 6
WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical
Engineering; Mineralogy; Mining & Mineral Processing
SC Materials Science; Metallurgy & Metallurgical Engineering; Mineralogy;
Mining & Mineral Processing
GA 445GK
UT WOS:000266038200013
ER
PT J
AU Puttler, K
Jaklic, B
Rieg, TS
Lucha, PA
AF Puttler, Krista
Jaklic, Beth
Rieg, Thomas S.
Lucha, Paul A., Jr.
TI Reduction of Conscious Sedation Requirements by Olfactory Stimulation: A
Prospective Randomized Single-Blinded Trial
SO JOURNAL OF ALTERNATIVE AND COMPLEMENTARY MEDICINE
LA English
DT Article; Proceedings Paper
CT Annual Scientific Meeting and Postgraduate Course Program of the
Southeastern-Surgical-Congress
CY FEB 09-12, 2008
CL Birmingham, AL
SP SE Surg Congress
ID PATIENT-CONTROLLED SEDATION; BISPECTRAL INDEX; MUSIC-THERAPY;
COLONOSCOPY; AROMATHERAPY; ENDOSCOPY; ANXIETY
AB Objectives: This study investigated the possibility that olfactory stimulation would decrease sedation needed for colonoscopy and therefore decrease the recovery time needed after conscious sedation.
Materials and methods: Patients were randomized to receive a cherry-flavoredscent in oxygen flowing at a 4 L per minute rate via nasal cannula or oxygen alone. The scent was provided in a cherry-flavored oil. A Bispectral Index (BIS) monitor (Aspect Medical Systems, Newton, MA) was placed and scores were recorded every 5 minutes during the procedure to control for different sedation patterns between different endoscopists. The recovery area nurse was unaware of whether a given patient was in the aroma or plain oxygen group, and based each patient's discharge on preexisting standardized criteria.
Results: Two hundred and eighty-four (284) patients completed the study. Both the procedure times and the recovery times were not statistically significant between the two groups. The doses of sedatives used, BIS scores at 5 minute intervals, and rate of change in BIS scores were also not statistically significant between the two groups.
Conclusions: Overall, there is no difference between olfactory stimulation and inhaled oxygen with regard to amount of sedation used and recovery times for colonoscopy. An inhaled cherry-scent may not have as great a calming effect as other scents that have been studied.
C1 [Jaklic, Beth; Lucha, Paul A., Jr.] USN, Med Ctr, Div Colon & Rectal Surg, Portsmouth, VA 23708 USA.
[Puttler, Krista] USN, Med Ctr, Dept Gen Surg, Portsmouth, VA 23708 USA.
[Rieg, Thomas S.] USN, Med Ctr, Dept Clin Res & Invest, Portsmouth, VA 23708 USA.
RP Lucha, PA (reprint author), USN, Med Ctr, Div Colon & Rectal Surg, Portsmouth, VA 23708 USA.
EM plucha@pol.net
NR 23
TC 3
Z9 3
U1 0
U2 0
PU MARY ANN LIEBERT INC
PI NEW ROCHELLE
PA 140 HUGUENOT STREET, 3RD FL, NEW ROCHELLE, NY 10801 USA
SN 1075-5535
J9 J ALTERN COMPLEM MED
JI J. Altern. Complement Med.
PD APR
PY 2009
VL 15
IS 4
BP 381
EP 385
DI 10.1089/acm.2008.0257
PG 5
WC Integrative & Complementary Medicine
SC Integrative & Complementary Medicine
GA 436MZ
UT WOS:000265419500009
PM 19388860
ER
PT J
AU Clark, AE
Yoo, JH
Cullen, JR
Wun-Fogle, M
Petculescu, G
Flatau, A
AF Clark, A. E.
Yoo, J. -H.
Cullen, J. R.
Wun-Fogle, M.
Petculescu, G.
Flatau, A.
TI Stress dependent magnetostriction in highly magnetostrictive Fe100-xGax,
20 < x < 30
SO JOURNAL OF APPLIED PHYSICS
LA English
DT Article; Proceedings Paper
CT 53rd Annual Conference on Magnetism and Magnetic Materials
CY NOV 11-14, 2008
CL Austin, TX
SP Phys Conf Inc, IEEE, Magnet Soc
ID BEHAVIOR; ALLOYS
AB Saturation magnetostriction measurements along the [100] axis of Fe100-xGax single crystal rods (similar to 25X6 mm diameter) were observed to have a linear dependence on [100] applied compressive stresses for 20 95% O(2) for 45 min (OPB(45)), 15 min (OPB(15)), or 5 min (OPB(05)) of OPB, or no OPB (control). The chamber was then decompressed without stops (0.91 ATA/min). Observers then entered the chamber and recorded signs of DCS for 2 h. All OPB periods significantly reduced the risk of developing type II DCS. OPB(45) eliminated severe DCS. Controls had a 2.5 times greater risk of developing type II DCS than OPB(05) (P = 0.016). OPB(45) and OPB(15) significantly reduced type I DCS compared with controls. These results support the potential of OPB as an alternative to staged decompression and that OPB could be expected to improve outcome in a DISSUB rescue scenario.
C1 [Mahon, R. T.; Dainer, H. M.; Gibellato, M. G.; Soutiere, S. E.] USN, Med Res Ctr, Undersea Med Dept, Silver Spring, MD 20910 USA.
[Mahon, R. T.; Dainer, H. M.] Uniformed Serv Univ Hlth Sci, Bethesda, MD 20814 USA.
[Soutiere, S. E.] USN, Expt Diving Unit, Panama City, FL USA.
RP Mahon, RT (reprint author), USN, Med Res Ctr, Undersea Med Dept, 503 Robert Grant Ave, Silver Spring, MD 20910 USA.
EM Richard.Mahon@med.navy.mil
FU NAVSEA Work [603713N.A0606]
FX This work was funded by NAVSEA Work Unit Number 603713N.A0606.
NR 40
TC 12
Z9 14
U1 0
U2 2
PU AMER PHYSIOLOGICAL SOC
PI BETHESDA
PA 9650 ROCKVILLE PIKE, BETHESDA, MD 20814 USA
SN 8750-7587
J9 J APPL PHYSIOL
JI J. Appl. Physiol.
PD APR
PY 2009
VL 106
IS 4
BP 1459
EP 1463
DI 10.1152/japplphysiol.91058.2008
PG 5
WC Physiology; Sport Sciences
SC Physiology; Sport Sciences
GA 427AW
UT WOS:000264753000055
PM 19179650
ER
PT J
AU Nelson, DA
Charbonnel, S
Curran, AR
Marttila, EA
Fiala, D
Mason, PA
Ziriax, JM
AF Nelson, D. A.
Charbonnel, S.
Curran, A. R.
Marttila, E. A.
Fiala, D.
Mason, P. A.
Ziriax, J. M.
TI A High-Resolution Voxel Model for Predicting Local Tissue Temperatures
in Humans Subjected to Warm and Hot Environments
SO JOURNAL OF BIOMECHANICAL ENGINEERING-TRANSACTIONS OF THE ASME
LA English
DT Article
DE biological tissues; biothermics; haemodynamics; physiological models;
pneumodynamics; skin
ID THERMAL-PROPERTIES; ABSORPTION RATE; SAR DISTRIBUTION; HUMAN VOLUNTEERS;
HEAT-TRANSFER; WIDE-RANGE; BLOOD-FLOW; HUMAN EYE; RESPONSES; EXPOSURE
AB This work describes and presents results from a new three-dimensional whole-body model of human thermoregulation. The model has been implemented using a version of the "Brooks Man" anatomical data set, consisting of 1.3x10(8) cubic volume elements (voxels) measuring 0.2 cm/side. The model simulates thermoregulation through passive mechanisms (metabolism, blood flow, respiration, and transpiration) and active mechanisms (vasodilatation, vasoconstriction, sweating, and shivering). Compared with lumped or compartment models, a voxel model is capable of high spatial resolution and can capture a level of anatomical detail not achievable otherwise. A high spatial resolution model can predict detailed heating patterns from localized or nonuniform heating patterns, such as from some radio frequency sources. Exposures to warm and hot environments (ambient temperatures of 33-48 degrees C) were simulated with the current voxel model and with a recent compartment model. Results from the two models (core temperature, skin temperature, metabolic rate, and evaporative cooling rate) were compared with published experimental results obtained under similar conditions. Under the most severe environmental conditions considered (47.8 degrees C, 27% RH for 2 h), the voxel model predicted a rectal temperature increase of 0.56 degrees C, compared with a core temperature increase of 0.45 degrees C from the compartment model and an experimental mean rectal temperature increase of 0.6 degrees C. Similar, good agreement was noted for other thermal variables and under other environmental conditions. Results suggest that the voxel model is capable of predicting temperature response (core temperature and skin temperature) to certain warm or hot environments, with accuracy comparable to that of a compartment model. In addition, the voxel model is able to predict internal tissue temperatures and surface temperatures, over time, with a level of specificity and spatial resolution not achievable with compartment models. The development of voxel models and related computational tools may be useful for thermal dosimetry applications involving mild temperature hyperthermia and for the assessment of safe exposure to certain nonionizing radiation sources.
C1 [Nelson, D. A.; Charbonnel, S.] Michigan Technol Univ, Houghton, MI 49931 USA.
[Curran, A. R.; Marttila, E. A.] ThermoAnalyt Inc, Calumet, MI 49913 USA.
[Fiala, D.] Univ Karlsruhe, Fachgebiet Bauphys & Tech Ausbau, D-76131 Karlsruhe, Germany.
[Mason, P. A.] USAF, Res Lab, Human Effectiveness Directorate, Directed Energy Bioeffects Div, Brooks AFB, TX 78235 USA.
[Ziriax, J. M.] USN, Hlth Res Ctr Detachment, Brooks City Base, TX 78235 USA.
[Nelson, D. A.] Univ S Alabama, Dept Mech Engn, Mobile, AL 36688 USA.
RP Nelson, DA (reprint author), Michigan Technol Univ, Houghton, MI 49931 USA.
EM danelson@usouthal.edu
NR 76
TC 7
Z9 7
U1 0
U2 12
PU ASME-AMER SOC MECHANICAL ENG
PI NEW YORK
PA THREE PARK AVE, NEW YORK, NY 10016-5990 USA
SN 0148-0731
J9 J BIOMECH ENG-T ASME
JI J. Biomech. Eng.-Trans. ASME
PD APR
PY 2009
VL 131
IS 4
AR 041003
DI 10.1115/1.3002765
PG 12
WC Biophysics; Engineering, Biomedical
SC Biophysics; Engineering
GA 416SM
UT WOS:000264025800003
PM 19275432
ER
PT J
AU Covey, CDC
AF Covey, Captain D. C.
TI From the Frontlines to the Home Front The Crucial Role of Military
Orthopedic Surgeons
SO JOURNAL OF BONE AND JOINT SURGERY-AMERICAN VOLUME
LA English
DT Editorial Material
ID OPERATION-IRAQI-FREEDOM; ENDURING FREEDOM; CARE; WOUNDS; WAR; EXTREMITY;
TRAUMA; SYSTEM
C1 USN, Dept Orthopaed Surg, Naval Med Ctr, San Diego, CA 92134 USA.
RP Covey, CDC (reprint author), USN, Dept Orthopaed Surg, Naval Med Ctr, 34800 Bob Wilson Dr, San Diego, CA 92134 USA.
EM dana.covey@med.navy.mil
NR 54
TC 0
Z9 0
U1 0
U2 0
PU JOURNAL BONE JOINT SURGERY INC
PI NEEDHAM
PA 20 PICKERING ST, NEEDHAM, MA 02192 USA
SN 0021-9355
J9 J BONE JOINT SURG AM
JI J. Bone Joint Surg.-Am. Vol.
PD APR
PY 2009
VL 91A
IS 4
BP 998
EP 1006
DI 10.2106/JBJS.G.01287
PG 9
WC Orthopedics; Surgery
SC Orthopedics; Surgery
GA 428EB
UT WOS:000264829700032
ER
PT J
AU Prak, DJL
O'Sullivan, DW
AF Prak, Dianne J. Luning
O'Sullivan, Daniel W.
TI Assessing the Salting-Out Behavior of Nitrobenzene, 2-Nitrotoluene, and
3-Nitrotoluene from Solubility Values in Pure Water and Seawater at
Temperatures between (277 and 314) K
SO JOURNAL OF CHEMICAL AND ENGINEERING DATA
LA English
DT Article
ID SOLUBLE ORGANIC-COMPOUNDS; ACID; 2,6-DINITROTOLUENE; COEFFICIENTS;
DEGRADATION; EXPLOSIVES; PREDICTION; SOLVENT; SEA
AB The salting-out behavior of nitrobenzene (NB), 2-nitrotoluene (2-NT), and 3-nitrotoluene (3-NT) was determined from solubility measurements in pure water and seawater with ionic strengths = (0.1662, 0.3352, 0.5071, and 0.6820) mol center dot L(-1) at temperatures between (277 and 314) K. For all compounds tested, the solubility increased with increasing temperature. Solubility values in pure water compare well with previously reported values. As the ionic strength of the solution increased, the solubility of the organic compounds decreased. The average salting-out coefficients for NB, 2-NT, and 3-NT were (0.12, 0.14, and 0.14) L center dot mol(-1), respectively, which are consistent with measurements for other nitroaromatic compounds. Over the temperature range examined, the salting-out coefficients did not vary significantly.
C1 [Prak, Dianne J. Luning; O'Sullivan, Daniel W.] USN Acad, Dept Chem, Annapolis, MD 21402 USA.
RP Prak, DJL (reprint author), USN Acad, Dept Chem, 572M Holloway Rd, Annapolis, MD 21402 USA.
EM prak@usna.edu; osulliva@usna.edu
RI Luning Prak, Dianne/B-8503-2011;
OI Luning Prak, Dianne/0000-0002-5589-7287; O'Sullivan,
Daniel/0000-0001-9104-5703
FU Naval Academy Research Council; Strategic Environmental Research and
Development Program [SERDP ER 1431]
FX This work was sponsored in part by the Naval Academy Research Council
award to D.J. Luning Prak and by a Strategic Environmental Research and
Development Program (SERDP ER 1431) award to D. W. O'Sullivan.
NR 31
TC 8
Z9 8
U1 0
U2 10
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0021-9568
J9 J CHEM ENG DATA
JI J. Chem. Eng. Data
PD APR
PY 2009
VL 54
IS 4
BP 1231
EP 1235
DI 10.1021/je800624c
PG 5
WC Thermodynamics; Chemistry, Multidisciplinary; Engineering, Chemical
SC Thermodynamics; Chemistry; Engineering
GA 431PA
UT WOS:000265073600009
ER
PT J
AU Baruah, T
Pederson, MR
AF Baruah, Tunna
Pederson, Mark R.
TI DFT Calculations on Charge-Transfer States of a
Carotenoid-Porphyrin-C-60 Molecular Triad
SO JOURNAL OF CHEMICAL THEORY AND COMPUTATION
LA English
DT Article
ID DENSITY-FUNCTIONAL THEORY; PHOTOINDUCED ELECTRON-TRANSFER;
SELF-INTERACTION CORRECTION; PORPHYRIN-FULLERENE TRIAD; EXCITED-STATES;
TRIPLET-STATE; HARTREE-FOCK; ENERGY; APPROXIMATION; SYSTEMS
AB We present a first-principles study on the ground and excited electronic states of a carotenoid-porphyrin-C-60 molecular triad. In addition, we illustrate a method for using DFT-based wave functions and densities to simulate complicated charge-transfer dynamics. Since fast and efficient calculations of charge-transfer excitations are required to understand these systems, we introduce a simple DFT-based method for calculating total energy differences between ground and excited states. To justify the procedure, we argue that some charge-transfer excitations are asympototically ground-state properties of the separated systems. Further justification is provided from numerical experiments on separated alkali atoms. The donor-chromophore-acceptor system studied here can absorb and store light energy for several hundreds of nanoseconds. Our density-functional calculations show that the triad can possess a dipole moment of 171 D in a charge-separated state. The charge-transfer energy technique is used to obtain the energies of the excited states. The charge separated excited states with a large dipole moment will create large polarization of the solvent. We use a model to estimate the stabilization of the excited-state energies in the presence of polarization. The calculated excited-state energies are further used to calculate the Einstein's A and B coefficients for this molecular system. We use these transition rates in a kinetic Monte-Carlo simulation to examine the electronic excitations and possible charging of the molecule. Our calculations show that the solvent polarization plays a crucial role in reordering the excited-state energies and thereby in the charge-separation process.
C1 [Pederson, Mark R.] USN, Res Lab, Washington, DC 20375 USA.
[Baruah, Tunna] Univ Texas El Paso, El Paso, TX 79968 USA.
RP Pederson, MR (reprint author), USN, Res Lab, Washington, DC 20375 USA.
EM pederson@dave.nrl.navy.mil
FU ONR [N000140211046]; DoD CHSSI Program; UTEP; URI; NSF [HRD-0317607,
NIRT-0304122]
FX The authors acknowledge ONR (Grant No. N000140211046) and the DoD CHSSI
Program. T.B. acknowledges a UTEP startup grant, URI, NSF Advance
program at UTEP, and NSF Grants No. HRD-0317607 and NIRT-0304122. T.B.
gratefully acknowledges the Texas Advanced Computing Center (TACC) at
The University of Texas at Austin for providing HPC resources that have
contributed to part of the research results reported within this paper.
Part of the calculations were performed on Cray XD1 at UTEP. Other parts
of the work were performed on the SGI-Altix system at NRL-DC under the
auspices of the DoD HPCMP. The authors thank CCS, NRL, especially W. L.
Anderson and Dr. Jeanie E. Osburn, for providing computational
resources. We thank John Perdew for sharing his wisdom and functionals
on many occasions.
NR 47
TC 34
Z9 35
U1 1
U2 26
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1549-9618
J9 J CHEM THEORY COMPUT
JI J. Chem. Theory Comput.
PD APR
PY 2009
VL 5
IS 4
BP 834
EP 843
DI 10.1021/ct900024f
PG 10
WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical
SC Chemistry; Physics
GA 434IQ
UT WOS:000265268800020
PM 26609590
ER
PT J
AU Lin, BC
Malanoski, AP
Wang, Z
Blaney, KM
Long, NC
Meador, CE
Metzgar, D
Myers, CA
Yingst, SL
Monteville, MR
Saad, MD
Schnur, JM
Tibbetts, C
Stenger, DA
AF Lin, Baochuan
Malanoski, Anthony P.
Wang, Zheng
Blaney, Kate M.
Long, Nina C.
Meador, Carolyn E.
Metzgar, David
Myers, Christopher A.
Yingst, Samuel L.
Monteville, Marshall R.
Saad, Magdi D.
Schnur, Joel M.
Tibbetts, Clark
Stenger, David A.
TI Universal Detection and Identification of Avian Influenza Virus by Use
of Resequencing Microarrays
SO JOURNAL OF CLINICAL MICROBIOLOGY
LA English
DT Article
ID REVERSE TRANSCRIPTION-PCR; REAL-TIME PCR; DNA MICROARRAYS; A VIRUSES;
ADAMANTANE RESISTANCE; RESPIRATORY VIRUSES; MULTIPLEX PCR; ASSAY;
INFECTIONS; DIAGNOSIS
AB Zoonotic microbes have historically been, and continue to emerge as, threats to human health. The recent outbreaks of highly pathogenic avian influenza virus in bird populations and the appearance of some human infections have increased the concern of a possible new influenza pandemic, which highlights the need for broad-spectrum detection methods for rapidly identifying the spread or outbreak of all variants of avian influenza virus. In this study, we demonstrate that high-density resequencing pathogen microarrays (RPM) can be such a tool. The results from 37 influenza virus isolates show that the RPM platform is an effective means for detecting and subtyping influenza virus, while simultaneously providing sequence information for strain resolution, pathogenicity, and drug resistance without additional analysis. This study establishes that the RPM platform is a broad-spectrum pathogen detection and surveillance tool for monitoring the circulation of prevalent influenza viruses in the poultry industry and in wild birds or incidental exposures and infections in humans.
C1 [Lin, Baochuan; Malanoski, Anthony P.; Wang, Zheng; Schnur, Joel M.; Stenger, David A.] USN, Res Lab, Ctr Biomol Sci & Engn, Washington, DC 20375 USA.
[Blaney, Kate M.; Long, Nina C.; Meador, Carolyn E.] Novo Res Inc, Alexandria, VA 22308 USA.
[Metzgar, David; Myers, Christopher A.] USN, Dept Resp Dis Res, Hlth Res Ctr, San Diego, CA 92106 USA.
[Yingst, Samuel L.; Monteville, Marshall R.; Saad, Magdi D.] Naval Med Res Unit 3, Cairo, Egypt.
[Tibbetts, Clark] TessArae LLC, Potomac Falls, VA 20165 USA.
RP Lin, BC (reprint author), USN, Res Lab, Ctr Biomol Sci & Engn, Code 6900,4555 Overlook Ave SW, Washington, DC 20375 USA.
EM baochuan.lin@nrl.navy.mil
RI Malanoski, Anthony/C-7814-2011; Saad, Magdi/H-5561-2013; Valle,
Ruben/A-7512-2013; Lin, Baochuan/A-8390-2009
OI Malanoski, Anthony/0000-0001-6192-888X; Saad, Magdi/0000-0003-2111-8115;
Lin, Baochuan/0000-0002-9484-0785
FU Office of Naval Research; TessArae, LLC (Potomac Falls, VA)
FX The opinions and assertions contained herein are those of the authors
and are not to be construed as those of the U.S. Navy or military
service at large.
NR 39
TC 28
Z9 30
U1 0
U2 1
PU AMER SOC MICROBIOLOGY
PI WASHINGTON
PA 1752 N ST NW, WASHINGTON, DC 20036-2904 USA
SN 0095-1137
J9 J CLIN MICROBIOL
JI J. Clin. Microbiol.
PD APR
PY 2009
VL 47
IS 4
BP 988
EP 993
DI 10.1128/JCM.01346-08
PG 6
WC Microbiology
SC Microbiology
GA 427RS
UT WOS:000264797000018
PM 19279171
ER
PT J
AU Trammell, SA
Moore, M
Schull, TL
Lebedev, N
AF Trammell, Scott A.
Moore, Martin
Schull, Terence L.
Lebedev, Nikolai
TI Synthesis and electrochemistry of self-assembled monolayers containing
quinone derivatives with varying electronic conjugation
SO JOURNAL OF ELECTROANALYTICAL CHEMISTRY
LA English
DT Article
DE Quinone; Proton-coupled electron transfer; Rate and mechanism of
electron transfer; Oligo(phenylene vinylene) (OPV)
ID CONCERTED PROTON; VERSATILE CATALYST; GOLD ELECTRODE; ARYL BROMIDES;
HYDROQUINONE; BRIDGES; TRANSFERS; POLYMERIZATION; UBIQUINONE-10;
PRECURSORS
AB We describe a new strategy for the generation of self-assembled monolayers of three different quinones from derivatives each containing a short oligo(phenylene vinylene) (OPV) bridge with a methyl protected aryl thiol at the base and 2,5-dimethoxybenzene as the headgroup connected through either a single, double or triple bond. After partial deprotection of both -SCH(3) and -OCH(3) groups using t-BuSNa as a dealkylation agent, self-assembled monolayers (SAMs) of each compound were formed on gold. Complete deprotection of the headgroup to generate the hydroquinone/quinone redox couple was accomplished electrochemically in 0.1 M H(2)SO(4) using cyclic voltammetry. Electrochemical characterization as a function of the different bridging groups for the generated hydroquinone/quinone redox couple revealed formal potentials and redox reaction rates dramatically affected by small structural changes near the headgroup. Published by Elsevier B.V.
C1 [Trammell, Scott A.; Moore, Martin; Schull, Terence L.; Lebedev, Nikolai] USN, Res Lab, Ctr Biomol Sci & Engn, Washington, DC 20375 USA.
RP Trammell, SA (reprint author), USN, Res Lab, Ctr Biomol Sci & Engn, Washington, DC 20375 USA.
EM scott.trammell@nrl.navy.mil
FU Naval Research Laboratory
FX This research was supported by the Naval Research Laboratory.
NR 34
TC 22
Z9 22
U1 3
U2 30
PU ELSEVIER SCIENCE SA
PI LAUSANNE
PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND
SN 1572-6657
J9 J ELECTROANAL CHEM
JI J. Electroanal. Chem.
PD APR 1
PY 2009
VL 628
IS 1-2
BP 125
EP 133
DI 10.1016/j.jelechem.2009.01.023
PG 9
WC Chemistry, Analytical; Electrochemistry
SC Chemistry; Electrochemistry
GA 426MD
UT WOS:000264711500018
ER
PT J
AU Stahlbush, R
Phillips, J
Xing, G
AF Stahlbush, Robert
Phillips, Jamie
Xing, Grace
TI Foreword
SO JOURNAL OF ELECTRONIC MATERIALS
LA English
DT Editorial Material
C1 [Stahlbush, Robert] USN, Res Lab, Washington, DC 20375 USA.
[Phillips, Jamie] Univ Michigan, Ann Arbor, MI 48109 USA.
[Xing, Grace] Univ Notre Dame, Notre Dame, IN 46556 USA.
RP Stahlbush, R (reprint author), USN, Res Lab, Washington, DC 20375 USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 0361-5235
J9 J ELECTRON MATER
JI J. Electron. Mater.
PD APR
PY 2009
VL 38
IS 4
BP 483
EP 483
DI 10.1007/s11664-009-0688-4
PG 1
WC Engineering, Electrical & Electronic; Materials Science,
Multidisciplinary; Physics, Applied
SC Engineering; Materials Science; Physics
GA 414WX
UT WOS:000263897000001
ER
PT J
AU Maximenko, SI
Freitas, JA
Garces, NY
Glaser, ER
Fanton, MA
AF Maximenko, S. I.
Freitas, J. A.
Garces, N. Y.
Glaser, E. R.
Fanton, M. A.
TI Evolution of Deep Defect Centers in Semi-Insulating 4H-SiC Substrates
under High-Temperature Annealing
SO JOURNAL OF ELECTRONIC MATERIALS
LA English
DT Article; Proceedings Paper
CT 50th Electronic Materials Conference
CY JUN, 2008
CL Univ Calif Santa Barbara, Santa Barbara, CA
HO Univ Calif Santa Barbara
DE Semi-insulating material; luminescence; D(1) defect; high-temperature
annealing; silicon carbide
ID SILICON-CARBIDE; PHOTOLUMINESCENCE; SIGNATURES; DEVICES
AB The influence of postgrowth high-temperature anneals between 1400A degrees C and 2400A degrees C on the behavior of the D(1) center in semi-insulating 4H-SiC was studied by photoluminescence. The optical signature of D(1) was observed up to 2400A degrees C with intensity maxima at 1700A degrees C and 2200A degrees C. It was also found that changes in the postannealing cooling rate drastically influence the behavior of the D(1) center and the concentrations of the V(C), V(Si), V(C)-V(Si), and V(C)-C(Si) lattice defects observed from electron paramagnetic resonance experiments. The change in intensity of the D(1) defect has some correlation with the intensity change of the V(C)-V(Si) pair defect at temperatures above 1900A degrees C. In addition, infrared photoluminescence spectroscopy studies showed that changes in the intensity of the D(1) defect at 2100A degrees C to 2400A degrees C annealing temperatures and variable cool-down rates have close correlation with intensity changes of the UD2 defect.
C1 [Maximenko, S. I.; Freitas, J. A.; Garces, N. Y.; Glaser, E. R.] USN, Res Lab, Code 6877, Washington, DC 20375 USA.
[Fanton, M. A.] Penn State Univ, Ctr Electroopt, Freeport, PA 16229 USA.
RP Maximenko, SI (reprint author), USN, Res Lab, Code 6877, 4555 Overlook Ave, Washington, DC 20375 USA.
EM serguei.maximenko@nrl.navy.mil
NR 20
TC 3
Z9 3
U1 1
U2 2
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 0361-5235
J9 J ELECTRON MATER
JI J. Electron. Mater.
PD APR
PY 2009
VL 38
IS 4
BP 551
EP 556
DI 10.1007/s11664-008-0607-0
PG 6
WC Engineering, Electrical & Electronic; Materials Science,
Multidisciplinary; Physics, Applied
SC Engineering; Materials Science; Physics
GA 414WX
UT WOS:000263897000013
ER
PT J
AU Wagner, MS
Smith, J
Knee, TS
AF Wagner, M. S.
Smith, J.
Knee, T. S.
TI IS TYPICAL PRESENTATION TYPICAL ANYMORE? A CASE OF CELIAC SPRUE
PRESENTING AS INCREASED LEVOTHYROXINE REQUIREMENTS
SO JOURNAL OF GENERAL INTERNAL MEDICINE
LA English
DT Meeting Abstract
CT 32nd Annual Meeting of the Society-of-General-Internal-Medicine
CY MAY 13-16, 2009
CL Miami, FL
SP Soc Gen Internal Med
C1 [Wagner, M. S.; Smith, J.; Knee, T. S.] USN, Portsmouth, VA USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 0884-8734
J9 J GEN INTERN MED
JI J. Gen. Intern. Med.
PD APR
PY 2009
VL 24
SU 1
BP 324
EP 324
PG 1
WC Health Care Sciences & Services; Medicine, General & Internal
SC Health Care Sciences & Services; General & Internal Medicine
GA 435ZI
UT WOS:000265382000857
ER
PT J
AU Lafreniere, JP
Gumpert, B
Zawacki, K
AF Lafreniere, J. P.
Gumpert, B.
Zawacki, K.
TI WHAT CURES A BROKEN HEART? NOT OPIATES NOR A BOWEL PREP! A CASE OF
TRANSIENT LEFT VENTRICULAR APICAL BALLOONING SYNDROME CAUSED BY AN
ALLERGIC REACTION TO POLYETHYLENE GLYCOL ORAL SOLUTION.
SO JOURNAL OF GENERAL INTERNAL MEDICINE
LA English
DT Meeting Abstract
CT 32nd Annual Meeting of the Society-of-General-Internal-Medicine
CY MAY 13-16, 2009
CL Miami, FL
SP Soc Gen Internal Med
C1 [Lafreniere, J. P.; Gumpert, B.; Zawacki, K.] Naval Med Ctr Portsmouth, Portsmouth, VA USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 0884-8734
J9 J GEN INTERN MED
JI J. Gen. Intern. Med.
PD APR
PY 2009
VL 24
SU 1
BP 374
EP 374
PG 1
WC Health Care Sciences & Services; Medicine, General & Internal
SC Health Care Sciences & Services; General & Internal Medicine
GA 435ZI
UT WOS:000265382000993
ER
PT J
AU Hsieh, WC
Jonsson, H
Wang, LP
Buzorius, G
Flagan, RC
Seinfeld, JH
Nenes, A
AF Hsieh, W. C.
Jonsson, H.
Wang, L. -P.
Buzorius, G.
Flagan, R. C.
Seinfeld, J. H.
Nenes, A.
TI On the representation of droplet coalescence and autoconversion:
Evaluation using ambient cloud droplet size distributions
SO JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
LA English
DT Article
ID KESSLER-TYPE PARAMETERIZATIONS; ANALYTICAL FORMULATION; TURBULENT
COAGULATION; CONDENSATION NUCLEI; BOUNDARY-LAYER; PART I; AEROSOL;
MODELS; PRECIPITATION; SPECTROMETER
AB In this study, we evaluate eight autoconversion parameterizations against integration of the Kinetic Collection Equation (KCE) for cloud size distributions measured during the NASA CRYSTAL-FACE and CSTRIPE campaigns. KCE calculations are done using both the observed data and fits of these data to a gamma distribution function; it is found that the fitted distributions provide a good approximation for calculations of total coalescence but not for autoconversion because of fitting errors near the drop-drizzle separation size. Parameterizations that explicitly compute autoconversion tend to be in better agreement with KCE but are subject to substantial uncertainty, about an order of magnitude in autoconversion rate. Including turbulence effects on droplet collection increases autoconversion by a factor of 1.82 and 1.24 for CRYSTAL-FACE and CSTRIPE clouds, respectively; this enhancement never exceeds a factor of 3, even under the most aggressive collection conditions. Shifting the droplet-drizzle separation radius from 20 to 25 mm results in about a twofold uncertainty in autoconversion rate. The polynomial approximation to the gravitation collection kernel used to develop parameterizations provides computation of autoconversion that agree to within 30%. Collectively, these uncertainties have an important impact on autoconversion but are all within the factor of 10 uncertainty of autoconversion parameterizations. Incorporating KCE calculations in GCM simulations of aerosol-cloud interactions studies is computationally feasible by using precalculated collection kernel tables and can quantify the autoconversion uncertainty associated with application of parameterizations.
C1 [Hsieh, W. C.; Nenes, A.] Georgia Inst Technol, Sch Earth & Atmospher Sci, Atlanta, GA 30332 USA.
[Jonsson, H.] Ctr Interdisciplinary Remotely Piloted Aircraft S, Marina, CA USA.
[Wang, L. -P.] Univ Delaware, Dept Mech Engn, Newark, DE 19716 USA.
[Buzorius, G.] Naval Postgrad Sch, Grad Sch Engn & Appl Sci, Dept Meteorol, Monterey, CA USA.
[Flagan, R. C.; Seinfeld, J. H.] CALTECH, Pasadena, CA 91125 USA.
[Flagan, R. C.; Seinfeld, J. H.] CALTECH, Dept Chem Engn, Pasadena, CA 91125 USA.
[Nenes, A.] Georgia Inst Technol, Sch Chem & Biomol Engn, Atlanta, GA 30332 USA.
RP Hsieh, WC (reprint author), Georgia Inst Technol, Sch Earth & Atmospher Sci, Atlanta, GA 30332 USA.
RI Wang, Lian-Ping/N-7516-2016
OI Wang, Lian-Ping/0000-0003-4276-0051
FU Department of Energy; NSF; Office of Naval Research [N00014-04-1-0118];
School of Earth and Atmospheric Science
FX Support was provided by the Department of Energy, an NSF CAREER award,
the Office of Naval Research under grant N00014-04-1-0118, and the
School of Earth and Atmospheric Science at Georgia Institute of
Technology. We thank Dr. Andreas Bott for sharing his KCE code and Dr.
Yangang Liu for helpful discussions. Finally, we thank three anonymous
reviewers for their constructive comments. W. C. H. thanks Chien-Yu Peng
for assistance in numerical techniques.
NR 41
TC 15
Z9 15
U1 0
U2 7
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 1
PY 2009
VL 114
AR D07201
DI 10.1029/2008JD010502
PG 16
WC Meteorology & Atmospheric Sciences
SC Meteorology & Atmospheric Sciences
GA 428PR
UT WOS:000264861700001
ER
PT J
AU Tang, HS
Keen, TR
AF Tang, H. S.
Keen, T. R.
TI Analytical Solutions for Open-Channel Temperature Response to Unsteady
Thermal Discharge and Boundary Heating
SO JOURNAL OF HYDRAULIC ENGINEERING-ASCE
LA English
DT Article
ID DISPERSION; MODEL; TIME
AB Analytical solutions are derived for a one-dimensional model of the bulk temperature response of open-channel flow with unsteady and nonuniform heating at the upstream end, the water surface, and the riverbed. The solutions are explicit formulas comprised of transient terms, which play dominant roles in the upstream region, and equilibrium terms, which determine the temperature far downstream. The applicability of the solutions to practical problems is illustrated for two cases: (1) a stream bounded at its upstream end by a dam and with a midreach inflow; and (2) Boulder Creek, Colo., which is impacted by effluent released from a wastewater treatment plant. The model prediction is in reasonable agreement with gauged data.
C1 [Tang, H. S.] CUNY City Coll, Dept Civil Engn, New York, NY 10031 USA.
[Tang, H. S.; Keen, T. R.] Div Oceanog, Naval Res Lab, Stennis Space Ctr, MS 39529 USA.
RP Tang, HS (reprint author), CUNY City Coll, Dept Civil Engn, 138th St & Convent Ave, New York, NY 10031 USA.
EM htang@ce.ccny.cuny.edu; tim.keen@nrlssc.navy.mil
FU Pacific Northwest National Laboratory; National Research Council; Office
of Naval Research [0601153N]
FX The first writer was supported by Pacific Northwest National Laboratory.
Partial support also came from National Research Council Research
Associateship Award and PSC-CUNY Research Award Program. The second
writer was supported by the Office of Naval Research through Program
Element 0601153N. Discussions with Dr. J. E. Edinger, Dr. P. Roberts,
Dr. M. Malik, and Dr. Z. Yang are acknowledged. The writers are grateful
to the associate editor and the anonymous reviewers for their valuable
suggestions.
NR 16
TC 6
Z9 6
U1 0
U2 3
PU ASCE-AMER SOC CIVIL ENGINEERS
PI RESTON
PA 1801 ALEXANDER BELL DR, RESTON, VA 20191-4400 USA
SN 0733-9429
J9 J HYDRAUL ENG-ASCE
JI J. Hydraul. Eng.-ASCE
PD APR
PY 2009
VL 135
IS 4
BP 327
EP 332
DI 10.1061/(ASCE)0733-9429(2009)135:4(327)
PG 6
WC Engineering, Civil; Engineering, Mechanical; Water Resources
SC Engineering; Water Resources
GA 418LI
UT WOS:000264149300009
ER
PT J
AU Lambrakos, S
Cooper, K
AF Lambrakos, S. G.
Cooper, K. P.
TI An Algorithm for Inverse Modeling of Layer-by-Layer Deposition Processes
SO JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
LA English
DT Article
DE fabricated metal; machining; modeling processes
AB Metallic parts can be made by deposition of liquid metal in a layer-by-layer fashion. By this means, layered structures can be produced that are made up of overlapping reinforced droplets. In particular, prototypes, i.e., customized parts and tooling, can be produced in this way. In order that layer-by-layer fabrication techniques transition from prototyping to manufacturing, however, the processes must be made reliable and consistent. Accordingly, detailed microstructural and thermal characterizations of the product are needed to advance manufacturing goals based on layer-by-layer deposition processes. The inherent complexity of layer-by-layer deposition processes, characteristic of energy and mass deposition processes in general, is such that process modeling based on theory, or the direct-problem approach, is extremely difficult. A general approach to overcoming difficulties associated with this inherent complexity is the inverse-problem approach. Presented here is an algorithm for inverse modeling of heat transfer occurring during layer-by-layer deposition, which is potentially adaptable for prediction of temperature histories in samples that are made by layer-by-layer deposition processes.
C1 [Lambrakos, S. G.; Cooper, K. P.] USN, Mat Sci & Technol Div, Res Lab, Washington, DC USA.
RP Lambrakos, S (reprint author), USN, Mat Sci & Technol Div, Res Lab, Washington, DC USA.
EM lambrakos@anvil.nrl.navy.mil
NR 18
TC 6
Z9 6
U1 0
U2 4
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 1059-9495
J9 J MATER ENG PERFORM
JI J. Mater. Eng. Perform.
PD APR
PY 2009
VL 18
IS 3
BP 221
EP 230
DI 10.1007/s11665-008-9268-7
PG 10
WC Materials Science, Multidisciplinary
SC Materials Science
GA 416AQ
UT WOS:000263978000001
ER
PT J
AU Barlow, JG
AF Barlow, Jeffrey G.
TI Aircraft Carriers: A History of Carrier Aviation and Its Influence on
World Events, vol 2, 1946-2006.
SO JOURNAL OF MILITARY HISTORY
LA English
DT Book Review
C1 [Barlow, Jeffrey G.] USN, Hist Ctr, Washington, DC USA.
RP Barlow, JG (reprint author), USN, Hist Ctr, Washington, DC USA.
NR 1
TC 0
Z9 0
U1 0
U2 0
PU SOC MILITARY HISTORY
PI LEXINGTON
PA C/O VIRGINIA MILITARY INST, GEORGE C MARSHALL LIBRARY, LEXINGTON, VA
24450-1600 USA
SN 0899-3718
J9 J MILITARY HIST
JI J. Mil. Hist.
PD APR
PY 2009
VL 73
IS 2
BP 686
EP 687
PG 2
WC History
SC History
GA 434HB
UT WOS:000265264700056
ER
PT J
AU Kritz-Silverstein, D
Schultz, ST
Palinkas, LA
Wingard, DL
Barrett-Connor, E
AF Kritz-Silverstein, D.
Schultz, S. T.
Palinkas, L. A.
Wingard, D. L.
Barrett-Connor, E.
TI The association of thyroid stimulating hormone levels with cognitive
function and depressed mood: The Rancho Bernardo study
SO JOURNAL OF NUTRITION HEALTH & AGING
LA English
DT Article
CT 19th IAGG World Congress of Gerontology and Geriatrics
CY JUL 05-09, 2009
CL Paris, FRANCE
SP Int Assoc Gerontol & Geriatr
DE Cognitive function; depressed mood; depression; memory thyroid
stimulating hormone
ID L-THYROXINE TREATMENT; SUBCLINICAL HYPOTHYROIDISM; OLD-AGE; RISK-FACTOR;
ANXIETY; WOMEN; THYROTROPIN; DYSFUNCTION; DISABILITY; FEATURES
AB To evaluate the association of thyroid stimulating hormone levels with cognitive function and depressed mood in a community-based sample.
Cross-sectional study.
Clinic visit in 1999-2003.
Community-dwelling men (N=447) and women (N=663) aged 42-99 years.
Cognitive function was assessed with the Buschke-Fuld Selective Reminding Test, the Modified Mini-Mental State Examination, Trails B, and category fluency. Depressed mood was assessed with the Beck Depression Inventory (BDI). A fasting blood sample was obtained for thyroid stimulating hormone (TSH) measurement.
Mean age was 73.6 +/- 10.0 in men and 74.3 +/- 10.4 in women. Mean TSH was 1.9 mu IU/ml in both sexes; 9.0% of men and 24% of women reported thyroid medication use. Mean BDI scores were 4.6 +/- 4.1 in men and 5.2 +/- 4.3 in women; 9% of men and 11% of women used antidepressants. Before and after adjustment for covariates or exclusion of participants taking thyroid hormones, no associations were observed between TSH and cognitive function (ps > 0.10). TSH was inversely associated with BDI (p=0.03) in men, but not women.
Thyroid stimulating hormone level was unrelated to cognitive function in men and women, and was inversely associated with depressed mood in men only, possibly reflecting the greater use of both thyroid medications and antidepressants by women.
C1 [Kritz-Silverstein, D.; Schultz, S. T.; Palinkas, L. A.; Wingard, D. L.; Barrett-Connor, E.] Univ Calif San Diego, Dept Family & Prevent Med, La Jolla, CA 92093 USA.
[Schultz, S. T.] San Diego State Univ, Grad Sch Publ Hlth, Dept Epidemiol & Biostat, San Diego, CA 92182 USA.
[Schultz, S. T.] USN, Inst Dent & Biomed Res, Great Lakes, IL 60088 USA.
[Palinkas, L. A.] Univ So Calif, Sch Social Work, Los Angeles, CA 90089 USA.
RP Kritz-Silverstein, D (reprint author), Univ Calif San Diego, Dept Family & Prevent Med, 9500 Gilman Dr,MC 0631-C, La Jolla, CA 92093 USA.
EM dsilverstein@ucsd.edu; ebarrettconnor@ucsd.edu
FU NIA NIH HHS [AG 028507, R01 AG028507-02, R01 AG028507, R01 AG007181, R37
AG007181-20, R37 AG007181, AG 07181]; NIDDK NIH HHS [DK 31801, R01
DK031801-16, R01 DK031801]
NR 34
TC 5
Z9 8
U1 1
U2 2
PU SPRINGER FRANCE
PI PARIS
PA 22 RUE DE PALESTRO, PARIS, 75002, FRANCE
SN 1279-7707
J9 J NUTR HEALTH AGING
JI J. Nutr. Health Aging
PD APR
PY 2009
VL 13
IS 4
BP 317
EP 321
DI 10.1007/s12603-009-0029-6
PG 5
WC Geriatrics & Gerontology; Nutrition & Dietetics
SC Geriatrics & Gerontology; Nutrition & Dietetics
GA 443WM
UT WOS:000265941500005
PM 19300866
ER
PT J
AU Topp, SG
McManaman, JF
Bloom, DC
AF Topp, Shelby G.
McManaman, Joanne F.
Bloom, David C.
TI Peripheral Primitive Neuroectodermal Tumour of the Anterior Tongue in a
Newborn
SO JOURNAL OF OTOLARYNGOLOGY-HEAD & NECK SURGERY
LA English
DT Article
ID SOFT-TISSUE SARCOMAS; EWINGS-SARCOMA; NEUROEPITHELIOMA; EXPERIENCE;
DIAGNOSIS; INFANCY; NECK; HEAD; HAND
C1 [Topp, Shelby G.; Bloom, David C.] USN, Med Ctr Portsmouth, Dept Otolaryngol Head & Neck Surg, Portsmouth, VA 23708 USA.
[McManaman, Joanne F.] USN, Med Ctr Portsmouth, Dept Pediat, Div Pediat Hematol & Oncol, Portsmouth, VA 23708 USA.
RP Topp, SG (reprint author), USN, Med Ctr Portsmouth Otolaryngol, 620 John Paul Jones Circle, Portsmouth, VA 23708 USA.
EM shelby.topp@med.navy.mil
NR 31
TC 0
Z9 0
U1 0
U2 0
PU B C DECKER INC
PI HAMILTON
PA 50 KING STREET EAST, 2ND FLOOR, PO BOX 620, L C D 1, HAMILTON, ONTARIO
L8N 3K7, CANADA
SN 1916-0216
J9 J OTOLARYNGOL-HEAD N
JI J. Otolaryngol-Head Neck Surg.
PD APR
PY 2009
VL 38
IS 2
BP E56
EP E60
DI 10.2310/7070.2009.080158
PG 5
WC Otorhinolaryngology
SC Otorhinolaryngology
GA 544EC
UT WOS:000273634300027
PM 19442356
ER
PT J
AU Handler, RA
Mied, RP
Lindemann, GJ
Evans, TE
AF Handler, Robert A.
Mied, Richard P.
Lindemann, Gloria J.
Evans, Thomas E.
TI Turbulent Channel Flows on a Rotating Earth
SO JOURNAL OF PHYSICAL OCEANOGRAPHY
LA English
DT Article
ID DIRECT NUMERICAL-SIMULATION; COASTAL-PLAIN ESTUARY; CONVERGENCE FRONTS;
AXIAL CONVERGENCE; SECONDARY FLOW; MIXED ESTUARY; SQUARE DUCT; BOUNDARY;
MOTION; DYNAMICS
AB This paper deals with flow in a rectilinear channel on a rotating earth. The flow is directed perpendicular to the background planetary vorticity; both an analytical theory and numerical simulations are employed. The analytical approach assumes the existence of an eddy viscosity and employs a perturbation expansion in powers of the reciprocal of the Rossby number (Ro). At lowest order, a cross-channel circulation arises because of the tilting of the planetary vorticity vector by the shear in the along-channel direction. This circulation causes a surface convergence, which achieves its maximum value at a channel aspect ratio (= width/depth) of approximately 10. The location of the maximum surface convergence moves from near the center of the channel to a position very near the sidewalls as the aspect ratio increases from O(1) to O(100). To include the effects of turbulence, direct numerical pseudospectral simulations of the equations of motion are employed. While holding the friction Reynolds number fixed at 230.27, a series of simulations with increasing rotation (Ro = infinity, 10, 1.0, 0.1) are performed. The channelwide circulation cell observed in the analytical theory occurs for the finite Rossby number, but is displaced by lateral self-advection. In addition, turbulence-driven corner circulations appear, which make the along-channel maximum velocity appear at a subsurface location. The most interesting effect is the segregation of the turbulence to one side of the channel, while the turbulence is suppressed on the opposite side.
C1 [Handler, Robert A.; Mied, Richard P.; Lindemann, Gloria J.; Evans, Thomas E.] USN, Res Lab, Remote Sensing Div, Washington, DC 20375 USA.
RP Handler, RA (reprint author), USN, Res Lab, Remote Sensing Div, Code 7230, Washington, DC 20375 USA.
EM robert.handler@nrl.navy.mil
FU ONR 6.1 research projects
FX This work was supported by ONR 6.1 research projects, "Coastal ocean
dynamics from geostationary remote sensing data'' (Work Unit 728743) and
"Non-equilibrium processes at the air-sea interface'' (Work Unit
72-8759).
NR 40
TC 1
Z9 1
U1 1
U2 7
PU AMER METEOROLOGICAL SOC
PI BOSTON
PA 45 BEACON ST, BOSTON, MA 02108-3693 USA
SN 0022-3670
J9 J PHYS OCEANOGR
JI J. Phys. Oceanogr.
PD APR
PY 2009
VL 39
IS 4
BP 952
EP 968
DI 10.1175/2008JPO3938.1
PG 17
WC Oceanography
SC Oceanography
GA 439PO
UT WOS:000265639700008
ER
PT J
AU Grigorieva, NS
Fridman, GM
Mercer, JA
Andrew, RK
Wolfson, MA
Howe, BM
Colosi, JA
AF Grigorieva, Natalie S.
Fridman, Gregory M.
Mercer, James A.
Andrew, Rex K.
Wolfson, Michael A.
Howe, Bruce M.
Colosi, John A.
TI The interference component of the acoustic field corresponding to the
Long-Range Ocean Acoustic Propagation Experiment
SO JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA
LA English
DT Article
ID INDEPENDENT OCEAN; INTERNAL WAVES; AXIAL WAVE
AB Propagation of energy along the sound channel axis cannot be formally described in terms of geometrical acoustics due to repeated cusped caustics along the axis. In neighborhoods of these cusped caustics, a very complicated interference pattern is observed. Neighborhoods of interference grow with range and overlap at long ranges. This results in the formation of a complex interference wave-the axial wave-that propagates along the sound channel axis like a wave belonging to a crescendo of near-axial arrivals. The principal properties of this wave are calculated for the actual space-time configuration realized during a 2004 long-range propagation experiment conducted in the North Pacific. The experiment used M-sequences at 68.2 and 75 Hz, transmitter depths from 350 to 800 m, and ranges from 50 to 3200 km. Calculations show that the axial wave would be detectable for an optimal geometry-both transmitter and receiver at the sound channel axis-for a "smooth" range-dependent sound speed field. The addition of sound speed perturbations-induced here by simulated internal waves-randomizes the acoustic field to the extent that the axial wave becomes undetectable. These results should be typical for mid-latitude oceans with similar curvatures about the sound speed minimum. (C) 2009 Acoustical Society of America. [DOI: 10.1121/1.3082112]
C1 [Grigorieva, Natalie S.; Fridman, Gregory M.] St Petersburg State Marine Tech Univ, St Petersburg 190008, Russia.
[Mercer, James A.; Andrew, Rex K.; Wolfson, Michael A.] Univ Washington, Appl Phys Lab, Seattle, WA 98105 USA.
[Howe, Bruce M.] Univ Hawaii, Honolulu, HI 96822 USA.
[Colosi, John A.] USN, Postgrad Sch, Monterey, CA 93943 USA.
RP Grigorieva, NS (reprint author), St Petersburg State Marine Tech Univ, 3 Lotsmanskaya Str, St Petersburg 190008, Russia.
EM rex@apl.washington.edu
RI Howe, Bruce/J-2807-2012
OI Howe, Bruce/0000-0001-5711-5253
NR 17
TC 3
Z9 4
U1 0
U2 1
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 APR
PY 2009
VL 125
IS 4
BP 1919
EP 1929
DI 10.1121/1.3082112
PG 11
WC Acoustics; Audiology & Speech-Language Pathology
SC Acoustics; Audiology & Speech-Language Pathology
GA 442JR
UT WOS:000265838000021
PM 19354367
ER
PT J
AU Marques, TA
Thomas, L
Ward, J
DiMarzio, N
Tyack, PL
AF Marques, Tiago A.
Thomas, Len
Ward, Jessica
DiMarzio, Nancy
Tyack, Peter L.
TI Estimating cetacean population density using fixed passive acoustic
sensors: An example with Blainville's beaked whales
SO JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA
LA English
DT Article
ID SPERM-WHALES; ECHOLOCATION CLICKS; HUMPBACK WHALES; MARINE MAMMALS;
LOCALIZATION; WATERS; RATES; ABUNDANCE; OCEAN; PREY
AB Methods are developed for estimating the size/density of cetacean populations using data from a set of fixed passive acoustic sensors. The methods convert the number of detected acoustic cues into animal density by accounting for (i) the probability of detecting cues, (ii) the rate at which animals produce cues, and (iii) the proportion of false positive detections. Additional information is often required for estimation of these quantities, for example, from an acoustic tag applied to a sample of animals. Methods are illustrated with a case study: estimation of Blainville's beaked whale density over a 6 day period in spring 2005, using an 82 hydrophone wide-baseline array located in the Tongue of the Ocean, Bahamas. To estimate the required quantities, additional data are used from digital acoustic tags, attached to five whales over 21 deep dives, where cues recorded on some of the dives are associated with those received on the fixed hydrophones. Estimated density was 25.3 or 22.5 animals/1000 km(2), depending on assumptions about false positive detections, with 95% confidence intervals 17.3-36.9 and 15.4-32.9. These methods are potentially applicable to a wide variety of marine and terrestrial species that are hard to survey using conventional visual methods. (c) 2009 Acoustical Society of America. [DOI: 10.1121/1.3089590]
C1 [Marques, Tiago A.; Thomas, Len] Univ St Andrews, Ctr Res Ecol & Environm Modelling, The Observatory, St Andrews KY16 9LZ, Fife, Scotland.
[Ward, Jessica; DiMarzio, Nancy] USN, Undersea Warfare Ctr Div, Newport, RI 02841 USA.
[Tyack, Peter L.] Woods Hole Oceanog Inst, Woods Hole, MA 02543 USA.
RP Marques, TA (reprint author), Univ St Andrews, Ctr Res Ecol & Environm Modelling, The Observatory, St Andrews KY16 9LZ, Fife, Scotland.
EM tiago@mcs.st-and.ac.uk
RI Marques, Tiago/A-5530-2010; Tyack, Peter/D-6209-2013
OI Marques, Tiago/0000-0002-2581-1972; Tyack, Peter/0000-0002-8409-4790
FU US National Marine Fisheries Service research [981-1578-02,
981-1707-00]; National Oceanographic Partnership Program; US National
Marine Fisheries Service, Office of Protected Resources
FX Steve Martin and Dave Moretti provided extensive comments which greatly
improved the paper. The authors would like to thank other members of the
DECAF project for comment and discussions which are reflected throughout
the manuscript: Ron Morrissey, Dave Mellinger, David Borchers, and
Catriona Harris. Mark Johnson provided help in processing the DTag data.
Danielle Harris, Steve Buckland, Walter Zimmer, Jay Barlow and an
anonymous reviewer provided useful comments that improved the clarity
and readability of the manuscript. Tagging was performed under US
National Marine Fisheries Service research Permit Nos. 981-1578-02 and
981-1707-00 to P.L.T. and with the approval of the Woods Hole
Oceanographic Institution Animal Care and Use Committee. This work was
funded by two partners under the National Oceanographic Partnership
Program: the Ocean Acoustics Program of the US National Marine Fisheries
Service, Office of Protected Resources, and the International
Association of Oil and Gas Producers Joint Industry Programme on
Exploration and Production Sound and Marine Life.
NR 46
TC 104
Z9 105
U1 5
U2 33
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 APR
PY 2009
VL 125
IS 4
BP 1982
EP 1994
DI 10.1121/1.3089590
PG 13
WC Acoustics; Audiology & Speech-Language Pathology
SC Acoustics; Audiology & Speech-Language Pathology
GA 442JR
UT WOS:000265838000028
PM 19354374
ER
PT J
AU Shirley, ED
Ain, MC
AF Shirley, Eric D.
Ain, Michael C.
TI Achondroplasia: Manifestations and Treatment
SO JOURNAL OF THE AMERICAN ACADEMY OF ORTHOPAEDIC SURGEONS
LA English
DT Review
ID GROWTH-FACTOR RECEPTOR-3; THORACOLUMBAR KYPHOSIS; SKELETAL DYSPLASIA;
GENU VARUM; INSTRUMENTATION; COMPLICATIONS; CHILDREN; DWARFISM; PEDICLE;
PATIENT
AB Achondroplasia, the most common skeletal dysplasia, is caused by a mutation of fibroblast growth factor receptor-3. This disorder is characterized by frontal bossing, midface hypoplasia, otolaryngeal system dysfunction, and rhizomelic short stature. Orthopaedic manifestations are exhibited in the spine and the extremities. In the infant with achondroplasia, foramen magnum stenosis may result in brainstem compression with apnea and sudden death. Thoracolumbar kyphosis is seen in most infants, but typically it resolves when the child begins to walk. Anatomic anomalies of the vertebral column place the patient at risk for spinal stenosis as early as the first decade and especially during adulthood. Radial head dislocation is one manifestation in the upper extremity. Lower extremity alignment often is characterized by genu varum, which may require correction osteotomy. Medical and surgical options are available to increase patient height, but indications are controversial, and treatment often consumes a large portion of the child's life.
C1 [Shirley, Eric D.] USN, Med Ctr Portsmouth, Portsmouth, VA USA.
[Ain, Michael C.] Johns Hopkins Univ Hosp, Dept Orthopaed Surg, Baltimore, MD 21287 USA.
[Ain, Michael C.] Johns Hopkins Univ Hosp, Dept Neurosurg, Baltimore, MD 21287 USA.
RP Ain, MC (reprint author), Care Of Elaine P Henze, Johns Hopkins Bayview Med Ctr, Dept Orthopaed Surg, 4940 Eastern Ave,A672, Baltimore, MD 21224 USA.
NR 38
TC 26
Z9 28
U1 0
U2 13
PU AMER ACAD ORTHOPAEDIC SURGEONS
PI ROSEMENT
PA 6300 N RIVER ROAD, ROSEMENT, IL 60018-4262 USA
SN 1067-151X
J9 J AM ACAD ORTHOP SUR
JI J. Am. Acad. Orthop. Surg.
PD APR
PY 2009
VL 17
IS 4
BP 231
EP 241
PG 11
WC Orthopedics
SC Orthopedics
GA 424TZ
UT WOS:000264592500004
PM 19307672
ER
PT J
AU Morales, MA
Haas, DJ
Fuller, BL
Chavez, T
AF Morales, Miguel A.
Haas, David J.
Fuller, Brian L.
Chavez, Tony
TI Leveraging Information to Support Military Flight Operations Quality
Assurance
SO JOURNAL OF THE AMERICAN HELICOPTER SOCIETY
LA English
DT Article
AB In recent years, a new generation of aircraft monitoring systems has been developed and is being implemented across numerous aircraft platforms with the intent to fully utilize all available data collected from individual aircraft. Both the civil as well as the military aircraft communities have come to the realization that remarkable benefits in terms of safety, operations, maintenance, and training can be leveraged by designing a process that can extract, analyze, consolidate, and single out information relevant to one or more of the many groups that oversee aircraft operations and support. A Military Flight Operations Quality Assurance (MFOQA) program was formed to take advantage of these opportunities, setting as its principal goals to reduce the number of accidental aircraft losses while increasing operational readiness across the full range of operations. The present work describes the technical approach being developed for the Department of the Navy MFOQA demonstration project. The contributions of this approach are evaluated on the SH-60 MFOQA demonstration squadron (HSM-41) stationed at Naval Air Station North Island. Detailed examination of selected examples is included, and overall results and advantages derived from the approach are summarized and discussed.
C1 [Morales, Miguel A.] CSC, Bethesda, MD USA.
[Haas, David J.; Fuller, Brian L.] USN, Ctr Surface Warfare, Bethesda, MD USA.
[Chavez, Tony] USN, Qual Assurance Div, HSM 41, Air Stn N Isl, San Diego, CA 92152 USA.
RP Morales, MA (reprint author), CSC, Bethesda, MD USA.
EM mmorales@csc.com
NR 4
TC 0
Z9 0
U1 1
U2 3
PU AMER HELICOPTER SOC INC
PI ALEXANDRIA
PA 217 N WASHINGTON ST, ALEXANDRIA, VA 22314 USA
SN 0002-8711
J9 J AM HELICOPTER SOC
JI J. Am. Helicopter Soc.
PD APR
PY 2009
VL 54
IS 2
AR 022004
DI 10.4050/JAHS.54.022004
PG 8
WC Engineering, Aerospace
SC Engineering
GA V16MQ
UT WOS:000207874100004
ER
PT J
AU Buono, MJ
Martha, SL
Heaney, JH
AF Buono, Michael J.
Martha, Sandra Leichliter
Heaney, Jay H.
TI Peripheral sweat gland function is improved with humid heat acclimation
SO JOURNAL OF THERMAL BIOLOGY
LA English
DT Article
DE Core temperature; Pilocarpine-induced sweat rate; Whole-body sweat rate
ID EXERCISE; RESPONSES; TEMPERATURE; ENVIRONMENT; MEN; HOT
AB 1. The purpose of this study was to determine if humid heat acclimation improves thermoregulatory function at the level of the eccrine sweat gland.
2. Mean rectal temperature and heart rate were significantly (p<0.05) reduced by 0.5 degrees C and 17 bpm, respectively, during an 8-day heat acclimation protocol in 13 male Subjects.
3. Whole-body sweat rate was also significantly increased 20% during the same time period. The most important new finding was that humid heat acclimation produced a significant 63% increase in pilocarpine-induced sweat rate. These results strongly suggest that heat acclimation improves sweat gland function via a peripheral mechanism. (C) 2008 Elsevier Ltd. All rights reserved.
C1 [Buono, Michael J.; Martha, Sandra Leichliter; Heaney, Jay H.] San Diego State Univ, San Diego, CA 92182 USA.
[Heaney, Jay H.] Naval Hlth Res Ctr, San Diego, CA 92182 USA.
RP Buono, MJ (reprint author), San Diego State Univ, MC 7251, San Diego, CA 92182 USA.
EM mbuono@mail.sdsu.edu
NR 23
TC 14
Z9 14
U1 0
U2 2
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0306-4565
J9 J THERM BIOL
JI J. Therm. Biol.
PD APR
PY 2009
VL 34
IS 3
BP 127
EP 130
DI 10.1016/j.jtherbio.2008.11.006
PG 4
WC Biology; Zoology
SC Life Sciences & Biomedicine - Other Topics; Zoology
GA 438JN
UT WOS:000265551800003
ER
PT J
AU Gaines, RJ
Wright, G
Stewart, J
AF Gaines, Robert J.
Wright, Geoffrey
Stewart, Joel
TI Injury to the Tarsometatarsal Joint Complex During Fixation of Lisfranc
Fracture Dislocations: An Anatomic Study
SO JOURNAL OF TRAUMA-INJURY INFECTION AND CRITICAL CARE
LA English
DT Article
DE Lisfranc; Tarsometatarsal; Fracture; Forefoot
ID PRIMARY ARTHRODESIS; INTERNAL-FIXATION; OPEN REDUCTION
AB Background: The cause of posttraumatic arthritis in Lisfranc injuries is argued in the literature. The purpose of this study was to determine whether the involved joint surface area increased with repositioning of the guidewire before screw placement.
Materials: Nine matched pairs of cadeveric feet were disarticulated at the tibiotalar joint. Under fluoroscopic guidance, cannulated screws were placed over guidewires after a single pass across the joint for right feet and two passes across the joint for left feet. Specimens were disarticulated through the midfoot, and the digital images of the joint surface were evaluated for joint surface area and the surface area of cartilaginous damage resulting from screw placement.
Results: Mean injury area for the first metatarsal (MT1) was 0.106 cm(2) for one pass and 0.168 cm(2) for two passes of the guidewire before screw advancement (p = 0.003) The mean injury area for the second metatarsal (MT2) was 0.123 and 0.178 cm(2) for one and two passes, respectively (p = 0.018). Four of nine (44%) of the left foot specimens (2 passes of the guidewire) sustained fractures across the MT2 base and three or those specimens also revealed fractures on the middle cuneiform side of the joint (33%).
Conclusion: Changing the placement of the guidewire across the midfoot significantly increased the joint surface affected by screw placement. Screws placed plantar to the midline of the joint increased the risk of fracture on both sides of the tarsometatarsal complex.
C1 [Gaines, Robert J.; Wright, Geoffrey; Stewart, Joel] USN, Med Ctr, Dept Orthopaed Surg, Bone & Joint Sports Med Inst, Portsmouth, VA USA.
RP Gaines, RJ (reprint author), Florida Orthoped Inst, 3404 S Belcher Dr, Tampa, FL 33629 USA.
EM orthogaines@hotmail.com
NR 13
TC 6
Z9 12
U1 0
U2 0
PU LIPPINCOTT WILLIAMS & WILKINS
PI PHILADELPHIA
PA 530 WALNUT ST, PHILADELPHIA, PA 19106-3621 USA
SN 0022-5282
J9 J TRAUMA
JI J. Trauma-Injury Infect. Crit. Care
PD APR
PY 2009
VL 66
IS 4
BP 1125
EP 1128
DI 10.1097/TA.0b013e318176c563
PG 4
WC Critical Care Medicine; Surgery
SC General & Internal Medicine; Surgery
GA 431KI
UT WOS:000265059800030
PM 19359924
ER
PT J
AU Dorlac, GR
Fang, R
Pruitt, VM
Marco, PA
Stewart, HM
Barnes, SL
Dorlac, WC
AF Dorlac, Gina R.
Fang, Raymond
Pruitt, Valerie M.
Marco, Peter A.
Stewart, Heidi M.
Barnes, Stephen L.
Dorlac, Warren C.
TI Air Transport of Patients With Severe Lung Injury: Development and
Utilization of the Acute Lung Rescue Team
SO JOURNAL OF TRAUMA-INJURY INFECTION AND CRITICAL CARE
LA English
DT Article
DE Aeromedical transport; CCATT; Acute lung rescue team; Novalung; Acute
lung injury; Military medicine; War and patient transfer
ID RESPIRATORY-DISTRESS-SYNDROME; BURN RESUSCITATION; EXTRACORPOREAL;
CASUALTIES; ASSIST
AB Background: Critical Care Air Transport Teams (CCATTs) are an integral component of modern casualty care, allowing early transport of critically ill and injured patients. Aeromedical evacuation of patients with significant pulmonary impairment is sometimes beyond the scope of CCATT because of limitations of the transport ventilator and potential for further respiratory deterioration in flight. The Acute Lung Rescue Team (ALRT) was developed to facilitate transport of these patients out of the combat theater.
Methods: The United States TRANSCOM Regulation and Command/Control Evacuation System and the United States Army Institute of Surgical Research Joint Theater Trauma Registry databases were reviewed for all critical patients transported out of theater between November 2005 and March 2007. Patient demographics, diagnosis, and clinical history were abstracted and ALRT patients were compared with CCATT patients.
Results: The ALRT was activated for 11 patients during the study period. Five patients were transported as a result of these activations. Trauma-related diagnoses were responsible for 82% of these requests. ALRT missions comprised 0.6% of all critical patient movements out of the combat theater and 1% of ventilator transports. Average FIO(2) was 0.92 +/- 0.11 for ALRT patients and 0.53 +/- 0.14 for CCATT patients (p = 0.005). ALRT patients required a mean positive end expiratory pressure of 19.0 cm H(2)O +/- 2.2 cm H(2)O compared with 6.5 cm H(2)O +/- 2.4 cm H(2)O in the CCATT group (p = 0.002).
Conclusions: Lung injury in the combat theater severe enough to exceed the capability of CCATT transport is uncommon. Patients for whom ALRT was activated had significantly higher positive end expiratory pressure and FIO(2) than those transported by CCATT. One-fourth of patients for whom ALRT was considered died before the team could be launched; transport may have been a futile consideration in these patients. Patients with even severe acute respiratory distress syndrome can be successfully transported by experienced, equipped specialty teams.
C1 [Dorlac, Gina R.; Stewart, Heidi M.; Barnes, Stephen L.; Dorlac, Warren C.] Univ Cincinnati, Div Trauma Crit Care, Ctr Sustainment Trauma & Readiness Skills, Cincinnati, OH 45267 USA.
[Pruitt, Valerie M.] Keesler Med Ctr, Keesler AFB, MS USA.
USN, Med Ctr, Dept Pulm & Crit Care Med, San Diego, CA USA.
RP Dorlac, GR (reprint author), Univ Cincinnati, Div Trauma Crit Care, Ctr Sustainment Trauma & Readiness Skills, 231 Albert Sabin Wy,POB 670558, Cincinnati, OH 45267 USA.
EM gina.dorlac@uc.edu
NR 18
TC 23
Z9 26
U1 0
U2 3
PU LIPPINCOTT WILLIAMS & WILKINS
PI PHILADELPHIA
PA 530 WALNUT ST, PHILADELPHIA, PA 19106-3621 USA
SN 0022-5282
J9 J TRAUMA
JI J. Trauma-Injury Infect. Crit. Care
PD APR
PY 2009
VL 66
IS 4
BP S164
EP S170
DI 10.1097/TA.0b013e31819cdf72
PG 7
WC Critical Care Medicine; Surgery
SC General & Internal Medicine; Surgery
GA 431OW
UT WOS:000265073100025
PM 19359961
ER
PT J
AU Dunne, JR
Hawksworth, JS
Stojadinovic, A
Gage, F
Tadaki, DK
Perdue, PW
Forsberg, J
Davis, T
Denobile, JW
Brown, TS
Elster, EA
AF Dunne, James R.
Hawksworth, Jason S.
Stojadinovic, Alexander
Gage, Fred
Tadaki, Doug K.
Perdue, Philip W.
Forsberg, Jonathan
Davis, Tom
Denobile, John W.
Brown, Trevor S.
Elster, Eric A.
TI Perioperative Blood Transfusion in Combat Casualties: A Pilot Study
SO JOURNAL OF TRAUMA-INJURY INFECTION AND CRITICAL CARE
LA English
DT Article
ID OPERATION-IRAQI-FREEDOM; DAMAGE CONTROL RESUSCITATION; MULTIPLE ORGAN
FAILURE; ENDURING-FREEDOM; EARLY COAGULOPATHY; EXTREMITY WOUNDS;
CARDIAC-SURGERY; MARINE-CORPS; RISK; TRAUMA
AB Background: In recent studies, blood transfusion has been shown to increase the rate of wound heating disturbances in orthopedic patients. Furthermore, our group has determined a correlation between delayed wound heating and elevations in inflammatory mediators in combat casualties. Therefore, we sought to determine the effect of blood transfusion on wound healing and inflammatory mediator release in combat casualties.
Methods: Prospective data were collected on 20 severely injured combat casualties sustaining extremity wounds. Patients were admitted to the National Naval Medical Center during a 13-month period from January 2007 to January 2008. Data variables included age, gender, Glasgow coma score (GCS), mechanism of injury, and transfusion history. Injury severity was assessed using the Injury Severity Score (ISS). Serum was collected initially and before each surgical wound debridement and analyzed using a panel of 21 cytokines and chemokines. The association between blood transfusion and wound healing, incidence of perioperative infection, intensive care unit (ICU) admission rate, and ICU and hospital length of stay was assessed. Differences were considered significant when p < 0.05.
Results: The study cohort had a mean age of 22 +/- 1, a mean ISS of 15.8 +/- 2.6, and a mean GCS 13.9 +/- 0.6; all were men and suffered penetrating injuries (90% improvised explosive device [IED] and 10% gunshot wound [GSW]). The cohort was divided into two groups. Patients receiving <= 4 units of blood initially (group 1, n = 11) were compared with patients who received >4 units of blood initially (group 2, n = 9). There was no significant difference in age, ISS, GCS, or mortality between the two groups. How-ever, group 2 patients had significant impairment in wound healing rate (54% vs. 9%, p < 0.05), higher ICU admission rate (78% vs. 9%, p < 0.01), perioperative infection rate (89% vs. 27%, p < 0.01), and a longer hospital length of stay (49.9 +/- 12.8 vs. 23.8 +/- 2.9, p < 0.05) compared with group 1 patients. In addition, there was a significant correlation between the initial mean serum cytokine/chemokine level of interleukin (IL)-10, IL-8, interferon inducible protein (IP)-10, IL-6, and IL-12p40 and the number of units of blood transfused (p < 0.05).
Conclusion: Allogeneic blood transfusions in combat casualties were associated with impaired wound heating, increased perioperative infection rate, and resource utilization. In addition, the extent of blood transfusion was associated with significant differences in inflammatory chemokine and cytokine release.
C1 [Dunne, James R.; Perdue, Philip W.; Denobile, John W.; Elster, Eric A.] Natl Naval Med Ctr, Dept Surg, Bethesda, MD 20889 USA.
[Hawksworth, Jason S.; Stojadinovic, Alexander] Walter Reed Army Med Ctr, Dept Surg, Washington, DC 20307 USA.
[Stojadinovic, Alexander; Elster, Eric A.] Uniformed Serv Univ Hlth Sci, Bethesda, MD 20814 USA.
[Gage, Fred; Tadaki, Doug K.; Davis, Tom; Brown, Trevor S.; Elster, Eric A.] USN, Med Res Ctr, Regenerat Med Dept, Silver Spring, MD USA.
[Forsberg, Jonathan] Natl Naval Med Ctr, Dept Orthoped, Bethesda, MD 20889 USA.
RP Dunne, JR (reprint author), Natl Naval Med Ctr, Dept Surg, Bethesda, MD 20889 USA.
EM james.dunne@med.navy.mil
FU US Navy Bureau of Medicine and Surgery; Medical Department Program [PE
060477 IN]
FX Supported (in part) by the US Navy Bureau of Medicine and Surgery and
the Medical Department Program (PE 060477 IN).
NR 42
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Z9 9
U1 1
U2 2
PU LIPPINCOTT WILLIAMS & WILKINS
PI PHILADELPHIA
PA 530 WALNUT ST, PHILADELPHIA, PA 19106-3621 USA
SN 0022-5282
J9 J TRAUMA
JI J. Trauma-Injury Infect. Crit. Care
PD APR
PY 2009
VL 66
IS 4
BP S150
EP S156
DI 10.1097/TA.0b013e31819d9561
PG 7
WC Critical Care Medicine; Surgery
SC General & Internal Medicine; Surgery
GA 431OW
UT WOS:000265073100023
PM 19359959
ER
PT J
AU Fagen, K
Singer, M
Braatz, S
Ferrara, S
AF Fagen, Kimberly
Singer, Melissa
Braatz, Steven
Ferrara, Stephen
TI Embolization of a Splenic Hemangioma in Pregnancy
SO JOURNAL OF VASCULAR AND INTERVENTIONAL RADIOLOGY
LA English
DT Letter
C1 [Fagen, Kimberly; Ferrara, Stephen] USN, San Diego Med Ctr, Dept Radiol, San Diego, CA 92134 USA.
[Singer, Melissa; Braatz, Steven] USN, San Diego Med Ctr, Dept Obstet & Gynecol, San Diego, CA 92134 USA.
RP Fagen, K (reprint author), USN, San Diego Med Ctr, Dept Radiol, 34800 Bob Wilson Dr,Ste 5, San Diego, CA 92134 USA.
NR 5
TC 0
Z9 0
U1 0
U2 0
PU ELSEVIER SCIENCE INC
PI NEW YORK
PA 360 PARK AVE SOUTH, NEW YORK, NY 10010-1710 USA
SN 1051-0443
J9 J VASC INTERV RADIOL
JI J. Vasc. Interv. Radiol.
PD APR
PY 2009
VL 20
IS 4
BP 559
EP 560
DI 10.1016/j.jvir.2008.12.419
PG 2
WC Radiology, Nuclear Medicine & Medical Imaging; Peripheral Vascular
Disease
SC Radiology, Nuclear Medicine & Medical Imaging; Cardiovascular System &
Cardiology
GA 429ZJ
UT WOS:000264958300021
PM 19216092
ER
PT J
AU Anam, K
Amare, M
Naik, S
Szabo, KA
Davis, TA
AF Anam, K.
Amare, M.
Naik, S.
Szabo, K. A.
Davis, T. A.
TI Severe tissue trauma triggers the autoimmune state systemic lupus
erythematosus in the MRL/++ lupus-prone mouse
SO LUPUS
LA English
DT Article
DE autoimmunity; burns; lupus; SLE; trauma
ID APOPTOTIC CELLS; THERMAL-INJURY; GENE-EXPRESSION; RISK-FACTORS;
INTERLEUKIN-12 PRODUCTION; CYTOKINE PRODUCTION; IGG3 CRYOGLOBULINS;
2-TYPE CYTOKINES; IMMUNE-RESPONSE; MAJOR INJURY
AB Tissue damage associated with a severe injury can result in profound inflammatory responses that may trigger autoimmune development in lupus-prone individuals. In this study, we investigated the role of a large full-thickness cutaneous burn injury on the early onset of autoimmune disease in lupus-prone MRL/++ mice. MRL/++ mice (chronic model) exhibit autoimmune symptoms at > 70 weeks of age, whereas MRL/-Fas(lpr) mice (acute model) develop autoimmune disease in 17 22 weeks due to a lymphoproliferative mutation. Autoimmune disease developed inMRL/++ mice (4-15 weeks post injury) is manifested by skin lesions, vasculitis, epidermal ulcers, cellular infiltration, splenomegaly, lymphadenopathy, hypergammaglobulinemia, elevated autoantibodies and renal pathologies including proteinuria, glomerulonephritis and immune complex deposition; complications that contribute to reduced survival. Transcription studies of wound margin tissue show a correlation between the pathogenic effects of dysregulated IL-1 beta, IL-6, TNF-alpha and PGE(2) synthesis during early wound healing and early onset of autoimmune disease. Interestingly, MRL/++ mice with healed wounds (30-40 days post burn) strongly rejected skin isografts. Conversely, skin isografts transplanted onto naive age-matched MRL/++ littermates achieved long-term survival. Collectively, these findings suggest that traumatic injury exacerbates inflammatory skin disease and severe multi-organ pathogenesis in lupus-prone mice. Lupus (2009) 18, 318-331.
C1 [Anam, K.; Amare, M.; Naik, S.; Davis, T. A.] USN, Regenerat Med Dept, Med Res Ctr, Silver Spring, MD 20910 USA.
[Szabo, K. A.] Walter Reed Army Inst Res, Dept Diagnost Pathol, Silver Spring, MD USA.
RP Anam, K (reprint author), USN, Regenerat Med Dept, Med Res Ctr, Room 2A10,503 Robert Grant Ave, Silver Spring, MD 20910 USA.
EM thomas.davis1@med.navy.mil
FU ONR work
FX This work was prepared as part of their official duties. Title 17 U. S.
C. 105 provides that 'Copyright protection under this title is not
available for any work of the United States Government.' Title 17 U. S.
C 101 defined a US Government work as a work prepared by a military
service member or employees of the US Government as part of that
person's official duties. The opinions or assertions contained in this
article are the private views of the authors and are not to be construed
as reflecting the views, policy or positions of the Department of the
Navy, Department of the Army, Department of Defense or the US
Government. The experiments reported herein were conducted in compliance
with the Animal Welfare Act and in accordance with the principles set
forth in the current edition of the Guide for Care and Use of Laboratory
Animals, Institute for Laboratory Animal Resources, National Research
Council, National Academy Press, 1996.
NR 82
TC 10
Z9 10
U1 0
U2 0
PU SAGE PUBLICATIONS LTD
PI LONDON
PA 1 OLIVERS YARD, 55 CITY ROAD, LONDON EC1Y 1SP, ENGLAND
SN 0961-2033
J9 LUPUS
JI Lupus
PD APR
PY 2009
VL 18
IS 4
BP 318
EP 331
DI 10.1177/0961203308097479
PG 14
WC Rheumatology
SC Rheumatology
GA 420WO
UT WOS:000264320100006
PM 19276300
ER
PT J
AU Harr, PA
Dea, JM
AF Harr, Patrick A.
Dea, Jonathan M.
TI Downstream Development Associated with the Extratropical Transition of
Tropical Cyclones over the Western North Pacific
SO MONTHLY WEATHER REVIEW
LA English
DT Article
ID BAROCLINIC DEVELOPMENT; PART I; EDDY ENERGY; LIFE-CYCLE; IMPACTS;
TRANSFORMATION; MIDLATITUDE; ENERGETICS; WAVES; OCEAN
AB The movement of a tropical cyclone into the midlatitudes involves interactions among many complex physical processes over a variety of space and time scales. Furthermore, the extratropical transition (ET) of a tropical cyclone may also result in a high-amplitude Rossby wave response that can extend to near-hemispheric scales. After an ET event occurs over the western portion of a Northern Hemisphere ocean basin, the high-amplitude downstream response often forces anomalous midlatitude circulations for periods of days to a week. These circulations may then be related to high-impact weather events far downstream of the forcing by the ET event. In this study, downstream development following ET events over the western North Pacific Ocean is examined. Local eddy kinetic energy analyses are conducted on four cases of North Pacific tropical cyclones of varying characteristics during ET into varying midlatitude flow characteristics during 15 July-30 September 2005. The goal is to examine the impact of each case on downstream development across the North Pacific during a period in which these events might increase the midlatitude cyclogenesis across the North Pacific during a season in which cyclogenesis is typically weak. Four typhoon (TY) cases from the summer of 2005 are chosen to represent the wide spectrum of variability in ET. This includes a case (TY Nabi 14W) that directly resulted in an intense midlatitude cyclone, a case in which a weak midlatitude cyclone resulted (TY Banyan 07W), a case in which the decaying tropical cyclone was absorbed into the midlatitude flow (TY Guchol 12W), and a case (TY Saola 17W) in which the tropical cyclone decayed under the influence of strong vertical wind shear. The variability in downstream response to each ET case is related to specific physical characteristics associated with the evolution of the ET process and the phasing between the pole-ward-moving tropical cyclone and the midlatitude circulation into which it is moving. A case of downstream development that occurred during September 2005 without an ET event is compared with the four ET cases.
C1 [Harr, Patrick A.; Dea, Jonathan M.] USN, Postgrad Sch, Dept Meteorol, Monterey, CA 93943 USA.
RP Harr, PA (reprint author), USN, Postgrad Sch, Dept Meteorol, Monterey, CA 93943 USA.
EM paharr@nps.edu
FU Office of Naval Research; Marine Meteorology Program; National Science
Foundation's Climate and Large-Scale Dynamics
FX This research was supported by the Office of Naval Research, Marine
Meteorology Program and the National Science Foundation's Climate and
Large-Scale Dynamics.
NR 24
TC 37
Z9 38
U1 0
U2 4
PU AMER METEOROLOGICAL SOC
PI BOSTON
PA 45 BEACON ST, BOSTON, MA 02108-3693 USA
SN 0027-0644
J9 MON WEATHER REV
JI Mon. Weather Rev.
PD APR
PY 2009
VL 137
IS 4
BP 1295
EP 1319
DI 10.1175/2008MWR2558.1
PG 25
WC Meteorology & Atmospheric Sciences
SC Meteorology & Atmospheric Sciences
GA 456HF
UT WOS:000266834100007
ER
PT J
AU Reynolds, CA
Peng, MS
Chen, JH
AF Reynolds, Carolyn A.
Peng, Melinda S.
Chen, Jan-Huey
TI Recurving Tropical Cyclones: Singular Vector Sensitivity and Downstream
Impacts
SO MONTHLY WEATHER REVIEW
LA English
DT Article
ID ADAPTIVE OBSERVING GUIDANCE; TRANSFORM KALMAN-FILTER; EXTRATROPICAL
TRANSITION; TARGETED OBSERVATIONS; MIDLATITUDE TROUGH; PREDICTION
SYSTEM; FORECAST ERRORS; STEERING VECTOR; GROWTH; PERTURBATIONS
AB Singular vectors (SVs) are used to study the sensitivity of 2-day forecasts of recurving tropical cyclones (TCs) in the western North Pacific to changes in the initial state. The SVs are calculated using the tangent and adjoint models of the Navy Operational Global Atmospheric Prediction System (NOGAPS) for 72 forecasts for 18 TCs in the western North Pacific during 2006. In addition to the linear SV calculation, nonlinear perturbation experiments are also performed in order to examine 1) the similarity between nonlinear and linear perturbation growth and 2) the downstream impacts over the North Pacific and North America that result from changes to the 2-day TC forecast. Both nonrecurving and recurving 2-day storm forecasts are sensitive to changes in the initial state in the near-storm environment (in an annulus approximately 500 km from the storm center). During recurvature, sensitivity develops to the northwest of the storm, usually associated with a trough moving in from the west. These upstream sensitivities can occur as far as 4000 km to the northwest of the storm, over the Asian mainland, which has implications for adaptive observations. Nonlinear perturbation experiments indicate that the linear calculations reflect case-to-case variability in actual nonlinear perturbation growth fairly well, especially when the growth is large. The nonlinear perturbations show that for recurving tropical cyclones, small initial perturbations optimized to change the 2-day TC forecast can grow and propagate downstream quickly, reaching North America in 5 days. The fastest 5-day perturbation growth is associated with recurving storm forecasts that occur when the baroclinic instability over the North Pacific is relatively large. These results suggest that nonlinear forecasts perturbed using TC SVs may have utility for predicting the downstream impact of TC forecast errors over the North Pacific and North America.
C1 [Reynolds, Carolyn A.; Peng, Melinda S.] USN, Marine Meteorol Div, Res Lab, Monterey, CA 93943 USA.
[Chen, Jan-Huey] Natl Taiwan Univ, Dept Atmospher Sci, Taipei 10764, Taiwan.
RP Reynolds, CA (reprint author), USN, Marine Meteorol Div, Res Lab, 7 Grace Hopper Ave, Monterey, CA 93943 USA.
EM carolyn.reynolds@nrlmry.navy.mil
OI Reynolds, Carolyn/0000-0003-4690-4171
FU National Taiwan University; National Science Council of Taiwan
[NSC-096-2917-I-002-004]
FX This research was sponsored by the Naval Research Laboratory and the
Office of Naval Research under Program Element 0601153N. Some of the
computations were performed using DoD High Performance Computing
resources at NAVO MSRC. The authors thank M. Riemer and two anonymous
reviewers for their helpful comments. J.-H. Chen acknowledges National
Taiwan University and the National Science Council of Taiwan for
supporting her 1-yr visit to the Naval Research Laboratory through Grant
NSC-096-2917-I-002-004.
NR 49
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Z9 30
U1 0
U2 2
PU AMER METEOROLOGICAL SOC
PI BOSTON
PA 45 BEACON ST, BOSTON, MA 02108-3693 USA
SN 0027-0644
J9 MON WEATHER REV
JI Mon. Weather Rev.
PD APR
PY 2009
VL 137
IS 4
BP 1320
EP 1337
DI 10.1175/2008MWR2652.1
PG 18
WC Meteorology & Atmospheric Sciences
SC Meteorology & Atmospheric Sciences
GA 456HF
UT WOS:000266834100008
ER
PT J
AU Greilich, A
Economou, SE
Spatzek, S
Yakovlev, DR
Reuter, D
Wieck, AD
Reinecke, TL
Bayer, M
AF Greilich, A.
Economou, Sophia E.
Spatzek, S.
Yakovlev, D. R.
Reuter, D.
Wieck, A. D.
Reinecke, T. L.
Bayer, M.
TI Ultrafast optical rotations of electron spins in quantum dots
SO NATURE PHYSICS
LA English
DT Article
AB Coherent manipulation of quantum bits (qubits) on timescales much shorter than the coherence time(1,2) is a key prerequisite for quantum information processing. Electron spins in quantum dots are particularly attractive for implementations of qubits, and efficient optical methods for initialization and readout of spins have been developed in recent years(3,4). Spin coherence times in the microsecond range have been demonstrated(5). Therefore, spin control by picosecond optical pulses would be highly desirable so that a large number of spin rotations could be carried out while coherence is maintained. A major remaining challenge is demonstration of such rotations with high fidelity. Here, we use an ensemble of quantum-dot electron spins focused into a small number of precession modes about a magnetic field by periodic optical pumping. We demonstrate ultrafast optical rotations of spins about arbitrary axes on a picosecond timescale using laser pulses as control fields.
C1 [Greilich, A.; Spatzek, S.; Yakovlev, D. R.; Bayer, M.] Tech Univ Dortmund, D-44221 Dortmund, Germany.
[Economou, Sophia E.; Reinecke, T. L.] Naval Res Lab, Washington, DC 20375 USA.
[Yakovlev, D. R.] Russian Acad Sci, AF Ioffe Physicotech Inst, St Petersburg 194021, Russia.
[Reuter, D.; Wieck, A. D.] Ruhr Univ Bochum, D-44780 Bochum, Germany.
RP Greilich, A (reprint author), Tech Univ Dortmund, D-44221 Dortmund, Germany.
EM alex.greilich@udo.edu; economou@bloch.nrl.navy.mil
RI Greilich, Alex/A-8927-2009; Wieck, Andreas Dirk/C-5129-2009
OI Wieck, Andreas Dirk/0000-0001-9776-2922
FU Bundesministerium fur Bildung; Forschung program 'nanoquit'; Office of
Naval Research; Deutsche Forschungsgemeinschaft
FX This work was supported by the Bundesministerium fur Bildung and
Forschung program 'nanoquit', the Office of Naval Research and the
Deutsche Forschungsgemeinschaft. S. E. E. was an NRC/NRL Research
Associate during this work.
NR 23
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Z9 155
U1 2
U2 29
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 APR
PY 2009
VL 5
IS 4
BP 262
EP 266
DI 10.1038/NPHYS1226
PG 5
WC Physics, Multidisciplinary
SC Physics
GA 434GZ
UT WOS:000265264500014
ER
PT J
AU Lutgendorf, MA
Busch, JM
Doherty, DA
Conza, LA
Moone, SO
Magann, EF
AF Lutgendorf, Monica A.
Busch, Jeanne M.
Doherty, Dorota A.
Conza, Lorie A.
Moone, Shirley O.
Magann, Everett F.
TI Prevalence of Domestic Violence in a Pregnant Military Population
SO OBSTETRICS AND GYNECOLOGY
LA English
DT Article; Proceedings Paper
CT Annual Meeting of the Armed Forces District of the
American-College-of-Obstetricians-and-Gynecologists
CY OCT 12-15, 2008
CL Norfolk, VA
SP Amer Coll Obstet & Gynecol, Armed Forces Dist
ID BIRTH-WEIGHT; PHYSICAL ABUSE; SUBSTANCE USE; MATERNAL HEALTH;
SELF-REPORT; US ARMY; WOMEN; ASSOCIATIONS; GUIDELINES; INTERVIEW
AB OBJECTIVE: To estimate the prevalence of domestic violence and the characteristics of pregnant women reporting domestic violence in a military setting.
METHODS: This was a prospective observational study of patients presenting for prenatal care to a Naval hospital from January 2007 to March 2008. Participants were screened anonymously for domestic violence using the Abuse Assessment Screen. Data were summarized using medians, interquartile ranges, and frequency distributions. Univariable comparisons between groups were conducted using Mann-Whitney tests for continuous data and V tests for categorical outcomes
RESULTS: Of the 1,162 surveys, 14.5% screened positive for abuse (either current or past), and 1.5% of respondents reported current pregnancy abuse. Relative to married women, single women (odds ratio [OR] 1.81, 95% confidence interval [CI] 1.04-3.16, P=.036) and separated or divorced women (OR 3.45, 95% CI 1.59-7.46, P=.002) were at an overall increased risk of physical or emotional partner abuse. Compared with married women, the single women (OR 2.80, 95% CI 1.35-5.78, P=.005), but not the separated or divorced women (P=.172), were at increased risk for partner abuse in the previous 12 months. A family history of abuse also was associated with an increased risk of abuse within the previous 12 months (OR 5.99, 95% CI 2.99-11.99, P <.001).
CONCLUSION: The prevalence of domestic violence in our pregnant military population was 14.5%, which is in the upper range of the prevalence reported in a nonmilitary population (0.9-23%). Unmarried status and a history of abuse may indicate a higher abuse risk.
C1 [Lutgendorf, Monica A.] Naval Med Ctr Portsmouth, Dept Obstet & Gynecol, Portsmouth, VA 23708 USA.
Univ Western Australia, Sch Womens & Infants Hlth, Perth, WA 6009, Australia.
RP Lutgendorf, MA (reprint author), Naval Med Ctr Portsmouth, Dept Obstet & Gynecol, 620 John Paul Jones Circle, Portsmouth, VA 23708 USA.
EM monica.lutgendorf@med.navy.mil
NR 42
TC 7
Z9 7
U1 1
U2 8
PU LIPPINCOTT WILLIAMS & WILKINS
PI PHILADELPHIA
PA 530 WALNUT ST, PHILADELPHIA, PA 19106-3621 USA
SN 0029-7844
EI 1873-233X
J9 OBSTET GYNECOL
JI Obstet. Gynecol.
PD APR
PY 2009
VL 113
IS 4
BP 866
EP 872
PG 7
WC Obstetrics & Gynecology
SC Obstetrics & Gynecology
GA 424PG
UT WOS:000264578000016
PM 19305332
ER
PT J
AU Schallhorn, SC
Tanzer, DJ
Kaupp, SE
Brown, M
Malady, SE
AF Schallhorn, Steve C.
Tanzer, David J.
Kaupp, Sandor E.
Brown, Mitch
Malady, Stephanie E.
TI Comparison of Night Driving Performance after Wavefront-Guided and
Conventional LASIK for Moderate Myopia
SO OPHTHALMOLOGY
LA English
DT Article
ID IN-SITU KERATOMILEUSIS; HIGHER-ORDER ABERRATIONS; PHOTOREFRACTIVE
KERATECTOMY; CONTRAST SENSITIVITY; REFRACTIVE SURGERY; EXCIMER-LASER;
PATIENT SATISFACTION; VISUAL SYMPTOMS; OUTCOMES; TOPOGRAPHY
AB Purpose: To compare preoperative and postoperative changes in simulated night driving performance after wavefront-guided (wLASIK) and conventional LASIK (cLASIK) for the treatment of moderate myopia.
Design: Retrospective, comparative study.
Participants: All eyes of subjects with a preoperative manifest spherical equivalent (MSE) between -4.50 and -6.00 who underwent night driving simulator (NDS) testing from 2 clinical trials were entered into the study. This comprised 38 cLASIK patients (62 eyes; mean -5.46 diopters [D] MSE) and 21 wLASIK patients (36 eyes, mean -5.20 D MSE).
Methods: Patients' records were reviewed from 2 LASIK clinical trials that had similar enrollment criteria. One trial treated patients with conventional LASIK using a bladed microkeratome (cLASIK) and the other treated with a wavefront-guided profile using a femtosecond laser (wLASIK). In both trials, patients with moderate myopia were asked to participate in NDS testing.
Main Outcome Measures: The detection and identification distances of road hazards were measured with and without a glare source before and 6 months after LASIK. Each eye was tested independently in best-corrected trial frames by a masked operator.
Results: In every category, there was a mean reduction in the preoperative to postoperative NDS performance after cLASIK (mean change, -21.3 to -27.9 ft, -6.5 to -8.5 m; 95% confidence interval [CI], -12.0 to -41.3 ft, -3.7 to -12.6 m); there was a corresponding mean improvement after wLASIK (mean change +15.0 to +29.1 ft, +4.6 to +8.9 m; 95% CI, +8.3 to +41.5 ft, +2.5 to +12.6 m). Significant differences between cLASIK and wLASIK NDS performance was observed in every category (P<0.01, Tukey's honest significant difference for unequal numbers). A clinical relevant loss of NDS performance (>0.5 seconds) was observed in 32% to 38% of cLASIK eyes for all tasks, whereas only 0% to 3% of eyes had this loss after wLASIK. Between 2% and 7% of cLASIK eyes and 11% and 31% of eyes had a significant postoperative improvement in NDS performance in every task.
Conclusions: Wavefront-guided LASIK to correct myopia combined with a femtosecond laser flap significantly improved mean night driving visual performance and was significantly better than cLASIK using a mechanical keratome.
Financial Disclosure(s): Proprietary or commercial disclosures may be found after the references. Ophthalmology 2009;116:702-709 (C) 2009 by the American Academy of Ophthalmology.
C1 [Schallhorn, Steve C.; Tanzer, David J.; Kaupp, Sandor E.; Brown, Mitch; Malady, Stephanie E.] USN, Med Ctr, Navy Refract Surg Ctr, San Diego, CA USA.
RP Schallhorn, SC (reprint author), 11730 Caminito Prenticia, San Diego, CA 92131 USA.
EM scschallhorn@yahoo.com
FU Commander Naval Air Forces
FX Funded by the Commander Naval Air Forces but had no role in the design
or conduct of this research.
NR 31
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Z9 33
U1 2
U2 10
PU ELSEVIER SCIENCE INC
PI NEW YORK
PA 360 PARK AVE SOUTH, NEW YORK, NY 10010-1710 USA
SN 0161-6420
J9 OPHTHALMOLOGY
JI Ophthalmology
PD APR
PY 2009
VL 116
IS 4
BP 702
EP 709
DI 10.1016/j.ophtha.2008.12.038
PG 8
WC Ophthalmology
SC Ophthalmology
GA 427YI
UT WOS:000264814600015
PM 19344822
ER
PT J
AU Florea, C
Sanghera, JS
Shaw, B
Aggarwal, ID
AF Florea, C.
Sanghera, J. S.
Shaw, B.
Aggarwal, I. D.
TI Fiber Bragg gratings in As2S3 fibers obtained using a 0/-1 phase mask
SO OPTICAL MATERIALS
LA English
DT Article
ID TRANSVERSE HOLOGRAPHIC METHOD; CHALCOGENIDE
AB We demonstrate the generation of fiber Bragg gratings in As2S3 fibers using a 633 nm HeNe laser and a 0/-1 phase mask. In a 20-micron core fiber, 17-dB reflection was observed at 1545 nm with a linewidth of 0.18 nm. This method is more robust than the transverse holographic method previously demonstrated in these fibers. (c) 2008 Elsevier B.V. All rights reserved.
C1 [Florea, C.] SFA Inc, Crofton, MD 21114 USA.
[Sanghera, J. S.; Shaw, B.; Aggarwal, I. D.] USN, Div Opt Sci, Res Lab, Washington, DC 20375 USA.
RP Florea, C (reprint author), SFA Inc, 2200 Def Highway,Suite 405, Crofton, MD 21114 USA.
EM cflorea@sfa.com
NR 6
TC 13
Z9 13
U1 0
U2 6
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0925-3467
J9 OPT MATER
JI Opt. Mater.
PD APR
PY 2009
VL 31
IS 6
BP 942
EP 944
DI 10.1016/j.optmat.2008.10.047
PG 3
WC Materials Science, Multidisciplinary; Optics
SC Materials Science; Optics
GA 435EB
UT WOS:000265325400032
ER
PT J
AU Roehrig, T
AF Roehrig, Terence
TI North Korea and the US State Sponsors of Terrorism List
SO PACIFIC FOCUS
LA English
DT Article
DE North Korea; South Korea; State Department terrorism list; terrorism;
sanctions; compellence; targeted sanctions; Kim Jong-il; KAL 858;
Rangoon bombing
ID ECONOMIC SANCTIONS WORK
AB On 11 October 2008, the Bush administration removed North Korea from the State Department's list of states that sponsor terrorism. Pyongyang had been on the list since 1988 and was placed there after the November 1987 bombing of Korean Airlines flight 858 over the Andaman Sea. Though North Korea went on the list for terrorist actions, its removal became part of the Six-Party process to convince Pyongyang to forgo its nuclear weapons ambitions. This article will explore these issues and examine the leverage the terrorism list had on North Korean behavior, how the USA chose to utilize that leverage, and North Korea's response to US efforts. This article argues that the intertwining of the terrorism list with denuclearization gave the USA leverage in the Six-Party Talks but there were limits to what this leverage could gain. Moreover, the links to the denuclearization process also generated leverage for North Korea that it exercised, creating a more complex and crosscutting mix of costs and incentives that was more difficult for Washington to control.
C1 USN, War Coll, Stennis Space Ctr, MS 39529 USA.
RP Roehrig, T (reprint author), USN, War Coll, Stennis Space Ctr, MS 39529 USA.
NR 28
TC 2
Z9 2
U1 1
U2 6
PU INHA UNIV, CTR INT STUDIES
PI INCHEON
PA NO 253 YONGHYUN-DONG, NAM-KU, INCHEON, 402-751, SOUTH KOREA
SN 1225-4657
J9 PAC FOCUS
JI Pac. Focus
PD APR
PY 2009
VL 24
IS 1
BP 82
EP 106
DI 10.1111/j.1976-5118.2009.01018.x
PG 25
WC Area Studies; International Relations
SC Area Studies; International Relations
GA 424LR
UT WOS:000264568700005
ER
PT J
AU Peil, S
AF Peil, Steven
TI Imitating quantum mechanics: Qubit-based model for simulation
SO PHYSICAL REVIEW A
LA English
DT Article
DE Fourier transforms; functions; quantum computing; quantum entanglement
AB We present an approach to simulating quantum computation based on a classical model that directly imitates discrete quantum systems. Qubits are represented as harmonic functions in a two-dimensional vector space. Multiplication of qubit representations of different frequencies results in exponential growth of the state space similar to the tensor-product composition of qubit spaces in quantum mechanics. Individual qubits remain accessible in a composite system, which is represented as a complex function of a single variable, though entanglement imposes a demand on resources that scales exponentially with the number of entangled qubits. We carry out a simulation of Shor's algorithm and discuss a simpler implementation in this classical model.
C1 USN Observ, Washington, DC 20392 USA.
RP Peil, S (reprint author), USN Observ, Washington, DC 20392 USA.
NR 5
TC 1
Z9 1
U1 0
U2 0
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
PY 2009
VL 79
IS 4
AR 042320
DI 10.1103/PhysRevA.79.042320
PG 8
WC Optics; Physics, Atomic, Molecular & Chemical
SC Optics; Physics
GA 443YO
UT WOS:000265946900052
ER
PT J
AU Barke, I
Zheng, F
Bockenhauer, S
Sell, K
von Oeynhausen, V
Meiwes-Broer, KH
Erwin, SC
Himpsel, FJ
AF Barke, I.
Zheng, F.
Bockenhauer, S.
Sell, K.
v. Oeynhausen, V.
Meiwes-Broer, K. H.
Erwin, S. C.
Himpsel, F. J.
TI Coverage-dependent faceting of Au chains on Si(557)
SO PHYSICAL REVIEW B
LA English
DT Article
DE elemental semiconductors; gold; phase diagrams; photoelectron spectra;
scanning tunnelling microscopy; semiconductor-metal boundaries; silicon;
surface reconstruction
ID REFLECTION-ELECTRON-MICROSCOPY; VICINAL SI(111); ATOMIC-STRUCTURE; GOLD;
SILICON; SURFACE; RECONSTRUCTION; SPIN
AB The structural and electronic phase diagrams of Au on Si(557) are established using scanning tunneling microscopy (STM) and angle-resolved photoemission. Five phases consisting of altogether seven facets are observed in the submonolayer regime. With increasing Au coverage one observes Si(111)7x7+Si(112), Si(557)-Au, Si(111)5x2-Au+Si(335)-Au, Si(111)root 3x root 3-Au+Si(335)-Au, and Si(111)root 3x root 3 root-Au+Si(5 5 11)-Au. The relative surface areas of the five phases and seven facets are determined accurately by depositing a Au wedge ranging from 0 to 0.7 monolayer and performing automatic pattern recognition on large-scale STM images. Angle-resolved photoemission spectra are decomposed into contributions from the five phases. The Fermi wave vectors and the band filling of various facets are identified. Using Si(557)-Au as reference we find a coverage of three Au chains per unit cell for the frequently studied Si(111)5x2-Au surface (instead of the widely used value of two Au chains). Likewise a coverage of two Au chains per unit cell is found for Si(553)-Au (instead of one Au chain), in agreement with x-ray diffraction. A structural model with three Au rows per unit cell is developed for Si(111)5x2-Au using density-functional-theory calculations.
C1 [Barke, I.; Sell, K.; v. Oeynhausen, V.; Meiwes-Broer, K. H.] Univ Rostock, Inst Phys, D-18051 Rostock, Germany.
[Barke, I.; Zheng, F.; Bockenhauer, S.; Himpsel, F. J.] Univ Wisconsin Madison, Dept Phys, Madison, WI 53706 USA.
[Erwin, S. C.] USN, Res Lab, Ctr Computat Mat Sci, Washington, DC 20375 USA.
RP Barke, I (reprint author), Univ Rostock, Inst Phys, Univ Pl 3, D-18051 Rostock, Germany.
RI Barke, Ingo/H-2097-2013;
OI Barke, Ingo/0000-0002-1717-570X; Meiwes-Broer,
Karl-Heinz/0000-0002-8516-0470
FU NSF [DMR-0705145, DMR-0084402]; DFG [SPP 1153]; Office of Naval
Research; DAAD
FX This work was supported by the NSF under Awards No. DMR-0705145 and No.
DMR-0084402 (SRC) and by the DFG within the priority program No. SPP
1153, and by the Office of Naval Research. I. B. acknowledges support
from the DAAD. Computations were performed at the DoD Major Shared
Resource Center at AFRL.
NR 59
TC 48
Z9 48
U1 2
U2 19
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
PY 2009
VL 79
IS 15
AR 155301
DI 10.1103/PhysRevB.79.155301
PG 9
WC Physics, Condensed Matter
SC Physics
GA 443XN
UT WOS:000265944200066
ER
PT J
AU Thalmeier, P
Parker, D
AF Thalmeier, Peter
Parker, David
TI Line node positions of the superconducting gap function of UPd2Al3
SO PHYSICAL REVIEW B
LA English
DT Article
DE aluminium alloys; heavy fermion superconductors; magnetocaloric effects;
palladium alloys; superconducting energy gap; thermal conductivity;
uranium alloys
ID FERMION COMPOUND UPD2AL3; DENSITY-OF-STATES; HEAVY; FLUCTUATIONS;
DEPENDENCE; SCATTERING; SYMMETRY; FIELD
AB The field-angular oscillation of the magnetothermal conductivity is a powerful method for clarifying the gap symmetry of unconventional superconductors. It has been used successfully in Sr2RuO4, CeCoIn5, and the cuprates, and has been applied to the heavy-fermion superconductor UPd2Al3. Despite this last application, however, there is still a controversy regarding the gap symmetry of UPd2Al3, with separate proposals for Delta(k)=Delta(0) cos k(z) and Delta(k)=Delta(0) cos 2k(z) in the literature from analyzing the same thermal-conductivity data. In this paper we systematically study this important issue and show conclusively from all available experimental evidence that, consistent with theoretical grounds, Delta(0) cos k(z) is the actual gap function of UPd2Al3.
C1 [Thalmeier, Peter] Max Planck Inst Chem Phys Solids, D-01187 Dresden, Germany.
[Parker, David] USN, Res Lab, Washington, DC 20375 USA.
RP Thalmeier, P (reprint author), Max Planck Inst Chem Phys Solids, Nothnitzer Str 40, D-01187 Dresden, Germany.
NR 40
TC 1
Z9 1
U1 0
U2 5
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
PY 2009
VL 79
IS 13
AR 134514
DI 10.1103/PhysRevB.79.134514
PG 9
WC Physics, Condensed Matter
SC Physics
GA 443WZ
UT WOS:000265942800114
ER
PT J
AU Zope, RR
Baruah, T
Lau, KC
Liu, AY
Pederson, MR
Dunlap, BI
AF Zope, Rajendra R.
Baruah, Tunna
Lau, K. C.
Liu, Amy Y.
Pederson, M. R.
Dunlap, B. I.
TI Boron fullerenes: From B-80 to hole doped boron sheets
SO PHYSICAL REVIEW B
LA English
DT Article
DE boron; density functional theory; energy gap; fullerenes; size effect;
valence bands
ID ICOSAHEDRAL FULLERENES; AB-INITIO; NANOTUBES; CLUSTERS; TRANSITION;
PLANAR
AB We demonstrate the existence of a family of stable boron fullerenes containing 80n(2) atoms that is related to the family of 60n(2) carbon icosahedral fullerene series and is compatible with the recently proposed stable boron sheets composed of triangular and hexagonal motifs. All electron density-functional calculations on the B-320, B-720, B-1280, and B-2000 confirm their stability and show that the quantum size effects open up electronic band gaps in the boron fullerenes at B-1280. Boron fullerenes below B-2000 have valence electronic structure identical to their corresponding carbon cousins from 60n(2) family.
C1 [Zope, Rajendra R.; Baruah, Tunna] Univ Texas El Paso, Dept Phys, El Paso, TX 79968 USA.
[Lau, K. C.] George Washington Univ, Dept Chem, Washington, DC 20052 USA.
[Liu, Amy Y.] Georgetown Univ, Dept Phys, Washington, DC 20057 USA.
[Pederson, M. R.] USN, Res Lab, Ctr Computat Mat Sci, Washington, DC 20375 USA.
[Dunlap, B. I.] USN, Res Lab, Theoret Chem Sect, Washington, DC 20375 USA.
RP Zope, RR (reprint author), Univ Texas El Paso, Dept Phys, El Paso, TX 79968 USA.
RI Lau, Kah Chun/A-9348-2013; Liu, Amy/E-2266-2015;
OI Lau, Kah Chun/0000-0002-4925-3397; Liu, Amy/0000-0002-2011-1854; Dunlap,
Brett/0000-0003-1356-6559
FU Office of Naval Research; UTEP; NSF [DMR-0705266]
FX This work is supported in part by the Office of Naval Research, directly
and through the Naval Research Laboratory. T. B. acknowledges support
from UTEP start up grant. A. Y. L. acknowledges support from NSF Grant
No. DMR-0705266. Authors acknowledge computer time at the UTEP, NRL, and
Texas Advanaced Computing Center.
NR 28
TC 52
Z9 53
U1 1
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
PY 2009
VL 79
IS 16
AR 161403
DI 10.1103/PhysRevB.79.161403
PG 4
WC Physics, Condensed Matter
SC Physics
GA 443XX
UT WOS:000265945200016
ER
PT J
AU Baedke, WC
AF Baedke, W. C.
TI Investigation via numerical simulation of limiting currents in the
presence of dielectric loads
SO PHYSICS OF PLASMAS
LA English
DT Article
ID RELATIVISTIC ELECTRON-BEAMS; PROPAGATION; PLASMA; FIELD
AB An investigation of the space-charge-limited currents for unneutralized relativistic particle beams drifting through a dielectrically loaded cylindrical conductor is presented. The first limiting current expression investigated assumes a uniform axial velocity profile, is commonly found in the literature, and has been applied to solid and annular beams with and without a dielectric present. The second limiting current expression investigated is self-consistent and is developed for annular beams in the presence of a dielectric load provided that the beams' inner and outer radii are less than the dielectric inner radius. Comparing both of these expressions to particle-in-cell simulations shows that the first expression under predicts the limiting current by no more than 20% and no less than 10% for all geometries and relativistic mass factors considered. It is also shown that the second expression over predicts the limiting current for all scenarios investigated by as much as 20% and in certain cases only a few percent. In addition, estimates for the accumulated charge densities at the vacuum-dielectric interface are presented and the possibility of breakdown within the dielectric is addressed. [DOI: 10.1063/1.3111029]
C1 USN, Ctr Surface Warfare, Dahlgren, VA 22448 USA.
RP Baedke, WC (reprint author), USN, Ctr Surface Warfare, 18444 Frontage Rd, Dahlgren, VA 22448 USA.
FU Office of Naval Research (ONR)
FX This work was supported in part by the Independent Laboratory
Independent Research (ILIR) fund provided by the Office of Naval
Research (ONR) to the Naval Surface Warfare Center, Dahlgren Division.
NR 18
TC 2
Z9 2
U1 0
U2 0
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 1070-664X
J9 PHYS PLASMAS
JI Phys. Plasmas
PD APR
PY 2009
VL 16
IS 4
AR 043104
DI 10.1063/1.3111029
PG 5
WC Physics, Fluids & Plasmas
SC Physics
GA 456XI
UT WOS:000266885800059
ER
PT J
AU Davis, J
Petrov, GM
AF Davis, J.
Petrov, G. M.
TI Similarity laws for production of GeV ions from high-intensity
laser-target interactions
SO PHYSICS OF PLASMAS
LA English
DT Article
ID SOLID TARGETS; GENERATION; PULSES; PLASMA
AB The formation of energetic (MeV-GeV) ions from the interaction of an intense ultrashort pulse laser with a "thin" (similar to 1 mu m) lithium planar target is investigated theoretically with a two-dimensional relativistic electromagnetic particle-in-cell model. Extensive simulations for various combinations of peak laser intensities, pulse durations, and laser spot sizes indicate that just one parameter, the laser fluence (incident laser energy per unit area), is sufficient to describe the interaction of high-intensity laser with micron-thick targets. (C) 2009 American Institute of Physics. [DOI: 10.1063/1.3109684]
C1 [Davis, J.; Petrov, G. M.] USN, Res Lab, Div Plasma Phys, Washington, DC 20375 USA.
RP Davis, J (reprint author), USN, Res Lab, Div Plasma Phys, 4555 Overlook Ave SW, Washington, DC 20375 USA.
FU Defense Threat Reduction Agency (DTRA); Naval Research Laboratory (NRL)
FX This work was supported by the Defense Threat Reduction Agency (DTRA)
and the Naval Research Laboratory (NRL) under the 6.1 program.
NR 16
TC 3
Z9 3
U1 0
U2 1
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 1070-664X
J9 PHYS PLASMAS
JI Phys. Plasmas
PD APR
PY 2009
VL 16
IS 4
AR 044503
DI 10.1063/1.3109684
PG 3
WC Physics, Fluids & Plasmas
SC Physics
GA 456XI
UT WOS:000266885800091
ER
PT J
AU Pollak, RD
Palazotto, AN
AF Pollak, Randall D.
Palazotto, Anthony N.
TI A comparison of maximum likelihood models for fatigue strength
characterization in materials exhibiting a fatigue limit
SO PROBABILISTIC ENGINEERING MECHANICS
LA English
DT Article
DE High cycle fatigue; Maximum likelihood estimation; Titanium alloys;
Probabilistic fatigue
ID HIGH-CYCLE FATIGUE; CURVES
AB In this study, various probabilistic models were considered to support fatigue strength design guidance in the ultra high-cycle regime (beyond 108 Cycles), with particular application to Ti-6Al-4V, a titanium alloy common to aerospace applications. The random fatigue limit model of Pascual and Meeker and two proposed simplified models (bilinear and hyperbolic) used maximum likelihood estimation techniques to fit probabilistic stress-life curves to experimental data. The bilinear and hyperbolic models provided a good fit to large-sample experimental data for dual-phase Ti-6Al-4V and were then applied to a small-sample data set for a beta annealed variant of this alloy, providing an initial probabilistic estimate of beta annealed Ti-6Al-4V fatigue strength in the gigacycle regime. The bilinear and hyperbolic models are recommended for use in estimating probabilistic fatigue strength parameters in support of very high-cycle design criteria for metals with clearly defined fatigue limits and fairly constant scatter in fatigue strength. Published by Elsevier Ltd
C1 [Pollak, Randall D.] USN, Postgrad Sch, Space Syst Acad Grp, Monterey, CA 93943 USA.
[Palazotto, Anthony N.] USAF, Inst Technol, Dept Aeronaut & Astronaut, Wright Patterson AFB, OH 45433 USA.
RP Pollak, RD (reprint author), USN, Postgrad Sch, Space Syst Acad Grp, Monterey, CA 93943 USA.
EM rdpollak@nps.edu
FU Air Force Research Laboratory's Materials and Manufacturing Directorate;
Wright-Patterson Air Force Base, Ohio
FX This research was supported in part by the Air Force Research
Laboratory's Materials and Manufacturing Directorate, Wright-Patterson
Air Force Base, Ohio. The authors thank Dr. Ted Nicholas for his
technical guidance and Dr. Ryan Morrissey for experimental data, More
exhaustive analysis is provided by Pollak [15]. The opinions, findings,
and conclusions are those of the authors and do not necessarily reflect
those of the United States Air Force.
NR 15
TC 2
Z9 3
U1 0
U2 2
PU ELSEVIER SCI LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
SN 0266-8920
J9 PROBABILIST ENG MECH
JI Probab. Eng. Eng. Mech.
PD APR
PY 2009
VL 24
IS 2
BP 236
EP 241
DI 10.1016/j.probengmech.2008.06.006
PG 6
WC Engineering, Mechanical; Mechanics; Statistics & Probability
SC Engineering; Mechanics; Mathematics
GA 411LZ
UT WOS:000263652400013
ER
PT J
AU Bartlett, JL
Ianna, PA
Begam, MC
AF Bartlett, Jennifer L.
Ianna, Philip A.
Begam, Michael C.
TI A Search for Astrometric Companions to Stars in the Southern Hemisphere
SO PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC
LA English
DT Article
ID PROPER-MOTION STARS; SOLAR-TYPE STARS; LOW-MASS STARS; NEARBY STARS;
WHITE-DWARFS; DECLINATION +30-DEGREES; SUBSTELLAR COMPANIONS;
SPECTROSCOPIC SURVEY; PLANETARY SYSTEMS; RED DWARFS
AB Thirteen nearby stars from the former University of Virginia Southern Parallax Program were tested for possible astrometric perturbations that might indicate very low mass companions. For 12 of these stars-LHS 34, 271, 337, 532, 1134, 1565, 2310, 2739, 2813, 3064, 3242, and 3418-no clear indication of any unseen companion was detected. One star, LHS 288, however, may have a perturbation meriting further investigation. These high proper motion stars are all members of the solar neighborhood, lying within 25 pc. Other than the white dwarf LHS 34, these stars are early M dwarfs (M0.5-M5.5 V). After a minimum of 50 observations spread over at least three years, the relative parallax solutions for these stars have errors less than 3 mas. Following the calculation of relative parallaxes and proper motions, time-series analyses using Lomb-Scargle periodograms tested the astrometric residuals for any additional periodic signals. An upper limit to the mass of companions that could remain undetected was estimated for each star individually.
C1 [Bartlett, Jennifer L.] USN Observ, Washington, DC 20392 USA.
[Ianna, Philip A.] Univ Virginia, Dept Astron, Charlottesville, VA 22904 USA.
[Begam, Michael C.] Univ Arizona, Steward Observ, Tucson, AZ 85721 USA.
RP Bartlett, JL (reprint author), USN Observ, Washington, DC 20392 USA.
EM jbartlett@usno.navy.mil; p.ianna@juno.com; mbegam@as.arizona.edu
FU NSF [AST98-20711, 05-07711]; Georgia State University; NASA-SIM;
University of Virginia; Hampden-Sydney College; US Naval Observatory; F.
H. Levinson Fund of the Peninsula Community Foundation; Australian
National University
FX The authors gratefully acknowledge support from NSF grants AST98-20711
(PI Ianna) and 05-07711, Georgia State University, NASA-SIM, the
University of Virginia Governor's Fellowship, Hampden-Sydney College,
the US Naval Observatory, and the F. H. Levinson Fund of the Peninsula
Community Foundation. In addition, the SPP acknowledges support from the
Research School of Astronomy and Astrophysics, Australian National
University, and thanks them for generous allocations of observing time
at Siding Spring Observatory.
NR 59
TC 7
Z9 7
U1 0
U2 0
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0004-6280
EI 1538-3873
J9 PUBL ASTRON SOC PAC
JI Publ. Astron. Soc. Pac.
PD APR
PY 2009
VL 121
IS 878
BP 365
EP 376
PG 12
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 448BO
UT WOS:000266236700006
ER
PT J
AU Peng, JY
Li, T
Peng, MS
Ge, XY
AF Peng, Jiayi
Li, Tim
Peng, Melinda S.
Ge, Xuyang
TI Barotropic instability in the tropical cyclone outer region
SO QUARTERLY JOURNAL OF THE ROYAL METEOROLOGICAL SOCIETY
LA English
DT Article
DE tropical cyclone intensity; asymmetric perturbations; barotropic
instability
ID HURRICANE-LIKE VORTICES; 3-DIMENSIONAL PERTURBATIONS; POTENTIAL
VORTICITY; PART II; VORTEX; SIMULATIONS; EYEWALL
AB The growth of asymmetric perturbations and their interactions with the symmetric flow are investigated for wind profiles in a tropical cyclone with instability in its outer region. Three tangential wind profiles are examined: TC1, a strong barotropic instability profile in the outer region; TC2, a stable wind profile; and TC3, a weaker instability profile comparing to TC1 with a larger distance between the inner negative and the outer positive vorticity gradient centres.
An eigenvalue analysis indicates that azimuthal wave-number two is the most unstable mode in both TC1 and TC3, with an e-folding time-scale of about 1 and 9 days, respectively. Numerical simulations using a linear barotropic model, with an initial asymmetry specified in the outer region, confirm the eigenvalue analysis. A mechanism is provided to explain the difference between simulations in TC1 and TC2. In both the stable and unstable case, an inner asymmetry is induced by the initial outer asymmetry acting on the symmetric vorticity gradient. Subsequently, the newly generated inner asymmetry feeds back positively to the Outer asymmetry with the unstable profile. Because of this positive feedback, the inner and the outer asymmetries maintain an up-shear phase tilting, leading to a continuous energy transfer from the symmetric flow to the asymmetric perturbation. In the stable TC2, the inner asymmetry could not amplify the outer initial asymmetry as there is no basic-state radial vorticity gradient there. Also due to this feedback process, disturbances grow faster where the (absolute) basic-state vorticity gradients are large. Therefore, the position of an initial disturbance plays a minor role in determining the Outcome of the system.
Simulations with a nonlinear barotropic model and a primitive equation model further confirm the significant weakening of the maximum tangential wind due to the positive feedback process in TC1. Simulations for TC3 show a smaller change of the symmetric tangential wind, as expected. Copyright (C) 2009 Royal Meteorological Society
C1 [Peng, Jiayi; Li, Tim; Ge, Xuyang] Univ Hawaii Manoa, Int Pacific Res Ctr, Honolulu, HI 96822 USA.
[Li, Tim] Univ Hawaii Manoa, Dept Meteorol, Honolulu, HI 96822 USA.
[Peng, Melinda S.] USN, Res Lab, Monterey, CA USA.
RP Peng, JY (reprint author), Univ Hawaii Manoa, Int Pacific Res Ctr, 1680 East West Road, Honolulu, HI 96822 USA.
EM pengj@hawaii.edu
FU ONR [N000140710145, N000140810256, N00173061G031, PE 0602435N]; NSFC
[40628006/40675054]; Japan Agency for Marine-Earth Science and
Technology (JAMSTEC); NASA [NNX07AG53G]; NOAA [NA17RJ1230]; SOEST
[7638]; IPRC [588]
FX This work was supported by ONR grants N000140710145, N000140810256,
N00173061G031, PE 0602435N and NSFC Grants 40628006/40675054. The
International Pacific Research Center is sponsored by the Japan Agency
for Marine-Earth Science and Technology (JAMSTEC), NASA (NNX07AG53G) and
NOAA (NA17RJ1230). This is SOEST contribution number 7638 and IPRC
contribution number 588.
NR 20
TC 4
Z9 4
U1 0
U2 1
PU JOHN WILEY & SONS LTD
PI CHICHESTER
PA THE ATRIUM, SOUTHERN GATE, CHICHESTER PO19 8SQ, W SUSSEX, ENGLAND
SN 0035-9009
J9 Q J ROY METEOR SOC
JI Q. J. R. Meteorol. Soc.
PD APR
PY 2009
VL 135
IS 641
BP 851
EP 864
DI 10.1002/qj.408
PG 14
WC Meteorology & Atmospheric Sciences
SC Meteorology & Atmospheric Sciences
GA 473QL
UT WOS:000268222800003
ER
PT J
AU Klein, SA
McCoy, RB
Morrison, H
Ackerman, AS
Avramov, A
de Boer, G
Chen, MX
Cole, JNS
Del Genio, AD
Falk, M
Foster, MJ
Fridlind, A
Golaz, JC
Hashino, T
Harrington, JY
Hoose, C
Khairoutdinov, MF
Larson, VE
Liu, XH
Luo, YL
McFarquhar, GM
Menon, S
Neggers, RAJ
Park, S
Poellot, MR
Schmidt, JM
Sednev, I
Shipway, BJ
Shupe, MD
Spangenbery, DA
Sud, YC
Turner, DD
Veron, DE
von Salzen, K
Walker, GK
Wang, ZE
Wolf, AB
Xie, SC
Xu, KM
Yang, FL
Zhang, G
AF Klein, Stephen A.
McCoy, Renata B.
Morrison, Hugh
Ackerman, Andrew S.
Avramov, Alexander
de Boer, Gijs
Chen, Mingxuan
Cole, Jason N. S.
Del Genio, Anthony D.
Falk, Michael
Foster, Michael J.
Fridlind, Ann
Golaz, Jean-Christophe
Hashino, Tempei
Harrington, Jerry Y.
Hoose, Corinna
Khairoutdinov, Marat F.
Larson, Vincent E.
Liu, Xiaohong
Luo, Yali
McFarquhar, Greg M.
Menon, Surabi
Neggers, Roel A. J.
Park, Sungsu
Poellot, Michael R.
Schmidt, Jerome M.
Sednev, Igor
Shipway, Ben J.
Shupe, Matthew D.
Spangenbery, Douglas A.
Sud, Yogesh C.
Turner, David D.
Veron, Dana E.
von Salzen, Knut
Walker, Gregory K.
Wang, Zhien
Wolf, Audrey B.
Xie, Shaocheng
Xu, Kuan-Man
Yang, Fanglin
Zhang, Gong
TI Intercomparison of model simulations of mixed-phase clouds observed
during the ARM Mixed-Phase Arctic Cloud Experiment. I: Single-layer
cloud
SO QUARTERLY JOURNAL OF THE ROYAL METEOROLOGICAL SOCIETY
LA English
DT Review
DE mixed-phase cloud; Arctic clouds; single-column models; cloud-resolving
models
ID COMMUNITY ATMOSPHERE MODEL; MOMENT MICROPHYSICS PARAMETERIZATION;
LARGE-SCALE MODELS; LIQUID WATER PATH; STRATIFORM CLOUDS;
BOUNDARY-LAYER; VERSION-3 CAM3; CLIMATE MODELS; BEAUFORT SEA; PART II
AB Results are presented from an intercomparison of single-column and cloud-resolving model simulations of a cold-air outbreak mixed-phase stratocumulus cloud observed during the Atmospheric Radiation Measurement (ARM) programme's Mixed-Phase Arctic Cloud Experiment. The observed cloud occurred in a well-mixed boundary layer with a cloud-top temperature of -15 degrees C. The average liquid water path of around 160 g m(-2) was about two-thirds of the adiabatic value and far greater than the average mass of ice which when integrated from the surface to cloud top was around 15 g m(-2).
Simulations of 17 single-column models (SCMs) and 9 cloud-resolving models (CRMs) are compared. While the simulated ice water path is generally consistent with observed values, the median SCM and CRM liquid water path is a factor-of-three smaller than observed. Results from a sensitivity study in which models removed ice microphysics suggest that in many models the interaction between liquid and ice-phase microphysics is responsible for the large model underestimate of liquid water path.
Despite this underestimate, the simulated liquid and ice water paths of several models are consistent with observed values. Furthermore, models with more sophisticated microphysics simulate liquid and ice water paths that are in better agreement with the observed values, although considerable scatter exists. Although no single factor guarantees a good simulation, these results emphasize the need for improvement in the model representation of mixed-phase microphysics. Copyright (C) 2009 Royal Meteorological Society
C1 [Klein, Stephen A.; McCoy, Renata B.; Xie, Shaocheng] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA.
[Morrison, Hugh] Natl Ctr Atmospher Res, Boulder, CO 80307 USA.
[Ackerman, Andrew S.; Del Genio, Anthony D.; Fridlind, Ann; Wolf, Audrey B.] NASA, Goddard Inst Space Studies, New York, NY 10025 USA.
[Avramov, Alexander; Harrington, Jerry Y.] Penn State Univ, University Pk, PA 16802 USA.
[de Boer, Gijs; Hashino, Tempei; Turner, David D.] Univ Wisconsin, Madison, WI USA.
[Chen, Mingxuan] Colorado State Univ, Ft Collins, CO 80523 USA.
[Cole, Jason N. S.] Univ British Columbia, Vancouver, BC V5Z 1M9, Canada.
[Falk, Michael; Larson, Vincent E.] Univ Wisconsin, Milwaukee, WI 53201 USA.
[Foster, Michael J.] Rutgers State Univ, New Brunswick, NJ 08903 USA.
[Golaz, Jean-Christophe] NOAA, Geophys Fluid Dynam Lab, Princeton, NJ USA.
[Hoose, Corinna] ETH, Inst Atmospher & Climate Sci, Zurich, Switzerland.
[Khairoutdinov, Marat F.] SUNY Stony Brook, Stony Brook, NY 11794 USA.
[Liu, Xiaohong] Pacific NW Natl Lab, Richland, WA 99352 USA.
[Luo, Yali] Chinese Acad Meteorol Sci, State Key Lab Severe Weather, Beijing, Peoples R China.
[McFarquhar, Greg M.; Zhang, Gong] Univ Illinois, Urbana, IL 61801 USA.
[Menon, Surabi; Sednev, Igor] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
[Neggers, Roel A. J.] KNMI, Utrecht, Netherlands.
[Park, Sungsu] Univ Washington, Seattle, WA 98195 USA.
[Poellot, Michael R.] Univ N Dakota, Grand Forks, ND 58201 USA.
[Schmidt, Jerome M.] USN, Res Lab, Monterey, CA USA.
[Shipway, Ben J.] Met Off, Exeter, Devon, England.
[Shupe, Matthew D.] Univ Colorado, NOAA, Cooperat Inst Res Environm Sci, Boulder, CO 80309 USA.
[Spangenbery, Douglas A.] Sci Syst & Applicat Inc, Hampton, VA USA.
[Sud, Yogesh C.; Walker, Gregory K.] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA.
[Veron, Dana E.] Univ Delaware, Newark, DE USA.
[von Salzen, Knut] Canadian Ctr Climate, Vancouver, BC, Canada.
[Wang, Zhien] Univ Wyoming, Laramie, WY 82071 USA.
[Xu, Kuan-Man] NASA, Langley Res Ctr, Hampton, VA 23665 USA.
[Yang, Fanglin] Natl Ctr Environm Predict, Camp Springs, MD USA.
RP Klein, SA (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94551 USA.
EM klein21@llnl.gov
RI Xie, Shaocheng/D-2207-2013; Golaz, Jean-Christophe/D-5007-2014; Liu,
Xiaohong/E-9304-2011; Shupe, Matthew/F-8754-2011; Hoose,
Corinna/A-4295-2009; Shipway, Ben/E-1375-2011; de Boer,
Gijs/F-3949-2011; Wang, Zhien/F-4857-2011; Ackerman, Andrew/D-4433-2012;
Del Genio, Anthony/D-4663-2012; Fridlind, Ann/E-1495-2012; Yang,
Fanglin/A-1948-2013; Xu, Kuan-Man/B-7557-2013; Klein,
Stephen/H-4337-2016;
OI Xie, Shaocheng/0000-0001-8931-5145; Golaz,
Jean-Christophe/0000-0003-1616-5435; Liu, Xiaohong/0000-0002-3994-5955;
Shupe, Matthew/0000-0002-0973-9982; Hoose, Corinna/0000-0003-2827-5789;
Shipway, Ben/0000-0002-7419-0789; de Boer, Gijs/0000-0003-4652-7150;
Ackerman, Andrew/0000-0003-0254-6253; Del Genio,
Anthony/0000-0001-7450-1359; Xu, Kuan-Man/0000-0001-7851-2629; Klein,
Stephen/0000-0002-5476-858X; Cole, Jason/0000-0003-0450-2748;
McFarquhar, Greg/0000-0003-0950-0135
FU Office of Science of the United States (US) Department of Energy
[DE-AI02-94ER61768, DE-FG02-02ER63370, DE-FG02-02ER63337,
DE-FG02-03ER63539, DE-FG02-05ER63955, DE-FG02-05ER63959,
DE-FG02-05ER64058, DE-FG02-05ER64069, DE-AI02-06ER64173,
DE-FG02-06ER64167, DE-FG02-06ER64168, DE-AI02-06ER64183,
DE-FG02-06ER64187, DE-FG02-07ER64378]; US National Aeronautics and Space
Administration's (NASA) [NNG06GBB1G]; National Science Foundation (NSF)
[ATM-0415184, ATM-0442605, G-7424-1]; Canadian Foundation for Climate
and Atmospheric Sciences; Department of Defense Center for
Geosciences/Atmospheric Research at Colorado State University via
Cooperative [DAAD19-02-2-0005]; Swiss National Centre of Competence in
Research; Chinese Academy of Meteorological Sciences; Colorado State
University under cooperative [ATM-0425247]; Lawrence Livermore National
Laboratory [DE-AC52-07NA27344]; Pacific Northwest National Laboratory is
operated for the Department of Energy by Battelle Memorial Institute
[DE-AC06-76RLO-1830]
FX This work is supported by the Office of Science of the United States
(US) Department of Energy under grants DE-AI02-94ER61768 (Del Genio),
DE-FG02-02ER63370 (Chen), DE-FG02-02ER63337 (McFarquhar),
DE-FG02-03ER63539 (Morrison), DE-FG02-05ER63955 (Cole),
DE-FG02-05ER63959 (Park), DE-FG02-05ER64058 (Harrington),
DE-FG02-05ER64069 (Wang), DE-AI02-06ER64173 (Ackerman and Fridlind),
DE-FG02-06ER64167 (Turner), DE-FG02-06ER64168 (Poellot),
DE-AI02-06ER64183 (Xu), DE-FG02-06ER64187 (de Boer), and
DE-FG02-07ER64378 (McFarquhar). A. Ackerman and A. Fridlind are
supported by the US National Aeronautics and Space Administration's
(NASA) Radiation Sciences Program and the NASA Advanced Supercomputing
Division. M. Chen is supported by National Science Foundation (NSF)
grant ATM-0415184. J. Cole is supported by the Canadian Foundation for
Climate and Atmospheric Sciences. M. Falk and V. Larson are supported by
NSF grant ATM-0442605 and subaward G-7424-1 from the Department of
Defense Center for Geosciences/Atmospheric Research at Colorado State
University via Cooperative Agreement DAAD19-02-2-0005 with the Army
Research Laboratory. C. Hoose is supported by the climate programme of
the Swiss National Centre of Competence in Research. Y. Luo is supported
by the Chinese Academy of Meteorological Sciences and NASA's Cloud
Modeling and Analysis Initiative. H. Morrison is supported by NASA grant
NNG06GBB1G and by the NSF Science and Technology Center for Multi-Scale
Modeling of Atmospheric Processes, managed by Colorado State University
under cooperative agreement ATM-0425247. The contribution of S. Klein,
R. McCoy, and S. Xie to this work is performed under the auspices of the
US Department of Energy by Lawrence Livermore National Laboratory under
contract DE-AC52-07NA27344. The Pacific Northwest National Laboratory is
operated for the Department of Energy by Battelle Memorial Institute
under contract DE-AC06-76RLO-1830. The National Center for Atmospheric
Research is sponsored by the National Science Foundation. Gratitude is
expressed to A. Beljaars for providing ECMWF analysis data. Comments of
R. Pincus and three anonymous reviewers are appreciated.
NR 102
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U1 3
U2 38
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 0035-9009
J9 Q J ROY METEOR SOC
JI Q. J. R. Meteorol. Soc.
PD APR
PY 2009
VL 135
IS 641
BP 979
EP 1002
DI 10.1002/qj.416
PN B
PG 24
WC Meteorology & Atmospheric Sciences
SC Meteorology & Atmospheric Sciences
GA 473QL
UT WOS:000268222800013
ER
PT J
AU Szekielda, KH
Bowles, JH
Gillis, DB
Miller, WD
AF Szekielda, Karl H.
Bowles, Jeffrey H.
Gillis, David B.
Miller, W. David
TI Interpretation of Absorption Bands in Airborne Hyperspectral Radiance
Data
SO SENSORS
LA English
DT Article
DE Photosynthetic pigments; hyperspectral remote sensing; fourth
derivative; continuum removal; solar spectrum
ID CYANOBACTERIAL BLOOMS; DERIVATIVE ANALYSIS; SPECTRA; PHYTOPLANKTON;
CHLOROPHYLL; PIGMENTS; WATER; FLUORESCENCE; VARIABILITY; IMAGER
AB It is demonstrated that hyperspectral imagery can be used, without atmospheric correction, to determine the presence of accessory phytoplankton pigments in coastal waters using derivative techniques. However, care must be taken not to confuse other absorptions for those caused by the presence of pigments. Atmospheric correction, usually the first step to making products from hyperspectral data, may not completely remove Fraunhofer lines and atmospheric absorption bands and these absorptions may interfere with identification of phytoplankton accessory pigments. Furthermore, the ability to resolve absorption bands depends on the spectral resolution of the spectrometer, which for a fixed spectral range also determines the number of observed bands. Based on this information, a study was undertaken to determine under what circumstances a hyperspectral sensor may determine the presence of pigments. As part of the study a hyperspectral imager was used to take high spectral resolution data over two different water masses. In order to avoid the problems associated with atmospheric correction this data was analyzed as radiance data without atmospheric correction. Here, the purpose was to identify spectral regions that might be diagnostic for photosynthetic pigments. Two well proven techniques were used to aid in absorption band recognition, the continuum removal of the spectra and the fourth derivative. The findings in this study suggest that interpretation of absorption bands in remote sensing data, whether atmospherically corrected or not, have to be carefully reviewed when they are interpreted in terms of photosynthetic pigments.
C1 [Bowles, Jeffrey H.; Miller, W. David] USN, Res Lab, Remote Sensing Div, Computat Phys Inc, Washington, DC 20375 USA.
RP Bowles, JH (reprint author), USN, Res Lab, Remote Sensing Div, Computat Phys Inc, 4555 Overlook Ave,SW, Washington, DC 20375 USA.
EM szekielda@aol.com; Jeffrey.Bowles@nrl.navy.mil;
David.Gillis@nrl.navy.mil; miller@cpi.com
FU Naval Research Laboratory (NRL) Washington, D. C.; American Society for
Education and Engineering (ASEE)
FX We thank Dr. A. Lobel of the Royal Observatory of Belgium for providing
the digital data for the solar spectra that are shown in Figure 14.
Details on the description of the spectra can be derived from Lobel [
28]. K. H. Szekielda is grateful for the support through the summer
faculty program at the Naval Research Laboratory (NRL) Washington, D. C.
and the American Society for Education and Engineering (ASEE). W. D.
Miller held a National Research Council Research Associateship Awards
when this study was conducted.
NR 28
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U1 0
U2 2
PU MOLECULAR DIVERSITY PRESERVATION INTERNATIONAL-MDPI
PI BASEL
PA KANDERERSTRASSE 25, CH-4057 BASEL, SWITZERLAND
SN 1424-8220
J9 SENSORS-BASEL
JI Sensors
PD APR
PY 2009
VL 9
IS 4
BP 2907
EP 2925
DI 10.3390/s90402907
PG 19
WC Chemistry, Analytical; Electrochemistry; Instruments & Instrumentation
SC Chemistry; Electrochemistry; Instruments & Instrumentation
GA 438BG
UT WOS:000265530300044
PM 22574053
ER
PT J
AU Reem, J
Carney, J
Stanley, M
Cassidy, J
AF Reem, Jennifer
Carney, Joseph
Stanley, Mark
Cassidy, Jeffrey
TI Risser sign inter-rater and intra-rater agreement: is the Risser sign
reliable?
SO SKELETAL RADIOLOGY
LA English
DT Article
DE Risser sign; Scoliosis; Radiographic grading; Reliability
ID IDIOPATHIC SCOLIOSIS; SKELETAL; KAPPA
AB Studies directly evaluating the reliability of the Risser sign are few in number, possess small sample sizes, and offer conflicting results. This study establishes the reliability of the Risser sign on a large sample size in an effort to provide clarification on the subject.
Two years' worth of AP pelvis radiographs from patients age 8-20 were downloaded from our institution's digital imaging system. One hundred of these images were selected for inclusion by an independent reviewer whose goal was to capture a spread of radiographs that included all Risser stages. Risser grading occurred in two rounds. In each round, three examiners randomly reviewed the 100 radiographs on three different occasions. The full AP pelvis radiograph was graded in Round 1 while only the iliac apophysis was visible in Round 2. Kappa coefficients and their confidence bounds are reported to indicate intra- and inter-observer reliability. The contrast between the rates of agreement about Risser stages in Rounds 1 versus 2 was assessed by McNemar's test. The signed-rank test was used to evaluate differences in intra-observer values between rounds.
Round 1 inter-observer kappa was 0.76. Round 2 inter-observer kappa was 0.51. In Round 1, 63 radiographs showed perfect agreement within the same Risser stage for all observations compared to 44 radiographs with perfect agreement within the same Risser stage in Round 2 (p = 0.004). Round 1 intra-observer kappa values were 0.92, 0.86, and 0.88. Round 2 intra-observer kappa values were 0.91, 0.77, and 0.88. Intra-observer value differences between rounds were not significant for two observers (p = 0.074, 0.061) but was significant for the third observer (p = 0.002).
The reliability of the Risser sign is acceptable and can be further improved when other markers of skeletal maturity on the pelvis radiograph are used to assist in grading.
C1 [Reem, Jennifer; Carney, Joseph; Cassidy, Jeffrey] USN, San Diego Med Ctr, Dept Orthopaed, San Diego, CA 92134 USA.
[Stanley, Mark] USN, San Diego Med Ctr, Dept Radiol, San Diego, CA 92134 USA.
[Stanley, Mark] Uniformed Serv Univ Hlth Sci, Bethesda, MD 20814 USA.
RP Carney, J (reprint author), USN, San Diego Med Ctr, Dept Orthopaed, 34800 Bob Wilson Dr Suite 112, San Diego, CA 92134 USA.
EM joseph.carney@med.navy.mil
NR 13
TC 10
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U1 0
U2 1
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 0364-2348
J9 SKELETAL RADIOL
JI Skeletal Radiol.
PD APR
PY 2009
VL 38
IS 4
BP 371
EP 375
DI 10.1007/s00256-008-0603-8
PG 5
WC Orthopedics; Radiology, Nuclear Medicine & Medical Imaging
SC Orthopedics; Radiology, Nuclear Medicine & Medical Imaging
GA 409ZV
UT WOS:000263545200009
PM 19002685
ER
PT J
AU Wang, YM
AF Wang, Y. -M.
TI Coronal Holes and Open Magnetic Flux
SO SPACE SCIENCE REVIEWS
LA English
DT Review
DE Coronal holes; Open magnetic flux; Solar wind; Photospheric flux
transport; Coronal flux-tube expansion; Rigid rotation; Magnetic
reconnection
ID SLOW SOLAR-WIND; X-RAY JETS; ENERGETIC PARTICLE EVENTS; ACTIVE-REGION;
FIELD; ORIGIN; EVOLUTION; SUN; INTERPLANETARY; MAXIMUM
AB Coronal holes are low-density regions of the corona which appear dark in X-rays and which contain "open" magnetic flux, along which plasma escapes into the heliosphere. Like the rest of the Sun's large-scale field, the open flux originates in active regions but is subsequently redistributed over the solar surface by transport processes, eventually forming the polar coronal holes. The total open flux and radial interplanetary field component vary roughly as the Sun's total dipole strength, which tends to peak a few years after sunspot maximum. An inverse correlation exists between the rate of flux-tube expansion in coronal holes and the solar wind speed at 1 AU. In the rapidly diverging fields present at the polar hole boundaries and near active regions, the bulk of the heating occurs at low heights, leading to an increase in the mass flux density at the Sun and a decrease in the asymptotic wind speed. The quasi-rigid rotation of coronal holes is maintained by continual footpoint exchanges between open and closed field lines, with the reconnection taking place at the streamer cusps. At much lower heights within the hole interiors, "interchange reconnection" between small bipoles and the overlying open flux also gives rise to coronal jets and polar plumes.
C1 USN, Res Lab, Div Space Sci, Washington, DC 20375 USA.
RP Wang, YM (reprint author), USN, Res Lab, Div Space Sci, Code 7672W, Washington, DC 20375 USA.
EM ywang@yucca.nrl.navy.mil
FU NASA; Office of Naval Research
FX I am indebted to N. R. Sheeley Jr. for his long-standing and continuing
collaboration, to R. Grappin for developing the solar wind code used to
obtain the results in Fig. 7, and to A. Balogh for inviting me to attend
the ISSI Workshop "Origin and Dynamics of Solar Magnetism." Financial
support was provided by NASA and the Office of Naval Research.
NR 73
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U1 0
U2 2
PU SPRINGER
PI DORDRECHT
PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS
SN 0038-6308
J9 SPACE SCI REV
JI Space Sci. Rev.
PD APR
PY 2009
VL 144
IS 1-4
BP 383
EP 399
DI 10.1007/s11214-008-9434-0
PG 17
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 428LQ
UT WOS:000264850100019
ER
PT J
AU Hill, JM
AF Hill, John M.
TI The North in the "Old English Orosius": A Geographical Narrative in
Context
SO SPECULUM-A JOURNAL OF MEDIEVAL STUDIES
LA English
DT Book Review
C1 [Hill, John M.] USN Acad, Annapolis, MD 21402 USA.
RP Hill, JM (reprint author), USN Acad, Annapolis, MD 21402 USA.
NR 1
TC 0
Z9 0
U1 0
U2 1
PU MEDIEVAL ACAD OF AMER
PI CAMBRIDGE
PA 1430 MASSACHUSETTS AVE, CAMBRIDGE, MA 02138 USA
SN 0038-7134
J9 SPECULUM
JI Speculum-J. Mediev. Stud.
PD APR
PY 2009
VL 84
IS 2
BP 502
EP 503
PG 2
WC Medieval & Renaissance Studies
SC Arts & Humanities - Other Topics
GA 428OP
UT WOS:000264858500073
ER
PT J
AU Dea, JR
Giraldo, FX
Neta, B
AF Dea, John R.
Giraldo, Francis X.
Neta, Beny
TI High-order non-reflecting boundary conditions for the linearized 2-D
Euler equations: No mean flow case
SO WAVE MOTION
LA English
DT Article
DE Non-reflecting boundary conditions; Euler equations; Finite differences;
Absorbing boundary conditions
ID PERFECTLY MATCHED LAYER; SHALLOW-WATER EQUATIONS; DISPERSIVE WAVES;
ELASTIC-WAVES; SYSTEMS
AB Higdon-type non-reflecting boundary conditions (NRBCs) are developed for the 2-D linearized Euler equations with Coriolis forces. This implementation is applied to a simplified form of the equations, with the NRBCs applied to all four sides of the domain. We demonstrate the validity of the NRBCs to high order. We close with a list of areas for further research. Published by Elsevier B.V.
C1 [Giraldo, Francis X.; Neta, Beny] USN, Postgrad Sch, Dept Appl Math, Monterey, CA 93943 USA.
[Dea, John R.] USAF, Inst Technol, Dept Math & Stat, Wright Patterson AFB, OH 45433 USA.
RP Neta, B (reprint author), USN, Postgrad Sch, Dept Appl Math, Monterey, CA 93943 USA.
EM byneta@gmail.com
RI Neta, Beny/B-1737-2009
FU Naval Postgraduate School
FX The authors would like to express their appreciation to the Naval
Postgraduate School for its support of this research. The first author
is also indebted to the Air Force Institute of Technology for its
support. Finally, the authors thank the reviewers for their helpful
suggestions and comments.
NR 31
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U1 0
U2 3
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0165-2125
EI 1878-433X
J9 WAVE MOTION
JI Wave Motion
PD APR
PY 2009
VL 46
IS 3
BP 210
EP 220
DI 10.1016/j.wavemoti.2008.11.002
PG 11
WC Acoustics; Mechanics; Physics, Multidisciplinary
SC Acoustics; Mechanics; Physics
GA 437DB
UT WOS:000265465300005
ER
PT J
AU Condon, NJ
Bowman, SR
O'Connor, SP
Quimby, RS
Mungan, CE
AF Condon, Nicholas J.
Bowman, Steven R.
O'Connor, Shawn P.
Quimby, Richard S.
Mungan, Carl E.
TI Optical cooling in Er3+:KPb2Cl5
SO OPTICS EXPRESS
LA English
DT Article
ID YAG LASER; UP-CONVERSION; CRYSTALS; ER; NM
AB For the first time, optical cooling has been observed in the I-4(13/2) excited state of erbium(III), using the low phonon energy host materal, potassium lead chloride (KPb2Cl5). Cooling was observed when samples were pumped at wavelengths longer than 1557 nm, 17 nm longer than the mean fluorescence wavelength of 1540 nm, which implies a nonradiative heat load of 1.1% for the I-4(13/2) -> I-4(15/2) transition. When pumped at 1568 nm, the total cooling efficiency was 0.38% of the absorbed power. These results highlight the potential of Er3+:KPb2Cl5 as a material for lasers operating in an eye safe spectral region. (C) 2009 Optical Society of America
C1 [Condon, Nicholas J.; Bowman, Steven R.; O'Connor, Shawn P.] USN, Res Lab, Div Opt Sci, Washington, DC 20375 USA.
[Quimby, Richard S.] Worcester Polytech Inst, Dept Phys, Worcester, MA 01609 USA.
[Mungan, Carl E.] USN Acad, Dept Phys, Annapolis, MD 21402 USA.
RP Condon, NJ (reprint author), USN, Res Lab, Div Opt Sci, 4555 Overlook Ave, Washington, DC 20375 USA.
EM nicholas.condon@nrl.navy.mil
FU Office of Naval Research
FX This work was supported by the Office of Naval Research.
NR 21
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U1 0
U2 4
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 MAR 30
PY 2009
VL 17
IS 7
BP 5466
EP 5472
DI 10.1364/OE.17.005466
PG 7
WC Optics
SC Optics
GA 426ZM
UT WOS:000264747500063
PM 19333313
ER
PT J
AU Tonizzo, A
Zhou, J
Gilerson, A
Twardowski, MS
Gray, DJ
Arnone, RA
Gross, BM
Moshary, F
Ahmed, SA
AF Tonizzo, Alberto
Zhou, Jing
Gilerson, Alexander
Twardowski, Michael S.
Gray, Deric J.
Arnone, Robert A.
Gross, Barry M.
Moshary, Fred
Ahmed, Samir A.
TI Polarized light in coastal waters: hyperspectral and multiangular
analysis
SO OPTICS EXPRESS
LA English
DT Article
ID ATMOSPHERE-OCEAN; SCATTERING; ANGLE; FIELD; DISCRIMINATION;
FLUORESCENCE; REFLECTANCE; RADIANCE; SEAWATER; MATRIX
AB Measurements of the underwater polarized light field were performed at different stations, atmospheric conditions and water compositions using a newly developed hyperspectral and multiangular polarimeter during a recent cruise in the coastal areas of New York Harbor Sandy Hook, NJ region (USA). Results are presented for waters with chlorophyll concentrations 1.3-4.8 mu g/l and minerals concentrations 2.03.9 mg/l. Angular and spectral variations of the degree of polarization are found to be consistent with theory. Maximum values of the degree of polarization do not exceed 0.4 and the position of the maximum is close to 100 scattering angle. Normalized radiances and degrees of polarization are compared with simulated ones obtained with a Monte Carlo radiative transfer code for the atmosphere-ocean system and show satisfactory agreement. (C) 2009 Optical Society of America
C1 [Tonizzo, Alberto; Zhou, Jing; Gilerson, Alexander; Gross, Barry M.; Moshary, Fred; Ahmed, Samir A.] CUNY City Coll, Opt Remote Sensing Lab, New York, NY 10031 USA.
[Tonizzo, Alberto; Zhou, Jing; Gilerson, Alexander; Gross, Barry M.; Moshary, Fred; Ahmed, Samir A.] CUNY, Grad Ctr, New York, NY 10031 USA.
[Twardowski, Michael S.] WET Labs Inc, Dept Res, Narragansett, RI 02882 USA.
[Gray, Deric J.; Arnone, Robert A.] USN, Res Lab, Stennis Space Ctr, MS 39529 USA.
RP Gilerson, A (reprint author), CUNY City Coll, Opt Remote Sensing Lab, New York, NY 10031 USA.
EM gilerson@ee.ccny.cuny.edu
FU Office of Naval Research; NASA; NOAA
FX This research has been supported by grants from the Office of Naval
Research, NASA and NOAA. Tom Legbandt of CCNY is warmly thanked for his
time and patience, and for providing excellent technical assistance
during the development of the polarization spectroradiometer, while
benefiting from his full support, valuable guidance and positive
creative ideas. We thank Scott Freeman for his precious help in the
field and for his efficient assistance in the MASCOT supervision and
data processing. We are especially grateful to James Adams for sharing
his knowledge and code which proved to be indispensable in producing the
modeled results. We are also very grateful to our reviewers, who took
the time to carefully read our manuscript and make valuable corrections,
additions, suggestions, and improvements.
NR 32
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U1 0
U2 8
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 MAR 30
PY 2009
VL 17
IS 7
BP 5666
EP 5682
DI 10.1364/OE.17.005666
PG 17
WC Optics
SC Optics
GA 426ZM
UT WOS:000264747500085
PM 19333335
ER
PT J
AU Abdo, AA
Ackermann, M
Arimoto, M
Asano, K
Atwood, WB
Axelsson, M
Baldini, L
Ballet, J
Band, DL
Barbiellini, G
Baring, MG
Bastieri, D
Battelino, M
Baughman, BM
Bechtol, K
Bellardi, F
Bellazzini, R
Berenji, B
Bhat, PN
Bissaldi, E
Blandford, RD
Bloom, ED
Bogaert, G
Bogart, JR
Bonamente, E
Bonnell, J
Borgland, AW
Bouvier, A
Bregeon, J
Brez, A
Briggs, MS
Brigida, M
Bruel, P
Burnett, TH
Burrows, D
Busetto, G
Caliandro, GA
Cameron, RA
Caraveo, PA
Casandjian, JM
Ceccanti, M
Cecchi, C
Celotti, A
Charles, E
Chekhtman, A
Cheung, CC
Chiang, J
Ciprini, S
Claus, R
Cohen-Tanugi, J
Cominsky, LR
Connaughton, V
Conrad, J
Costamante, L
Cutini, S
DeKlotz, M
Dermer, CD
de Angelis, A
de Palma, F
Digel, SW
Dingus, BL
Silva, EDE
Drell, PS
Dubois, R
Dumora, D
Edmonds, Y
Evans, PA
Fabiani, D
Farnier, C
Favuzzi, C
Finke, J
Fishman, G
Focke, WB
Frailis, M
Fukazawa, Y
Funk, S
Fusco, P
Gargano, F
Gasparrini, D
Gehrels, N
Germani, S
Giebels, B
Giglietto, N
Giommi, P
Giordano, F
Glanzman, T
Godfrey, G
Goldstein, A
Granot, J
Greiner, J
Grenier, IA
Grondin, MH
Grove, JE
Guillemot, L
Guiriec, S
Haller, G
Hanabata, Y
Harding, AK
Hayashida, M
Hays, E
Morata, JAH
Hoover, A
Hughes, RE
Johannesson, G
Johnson, AS
Johnson, RP
Johnson, TJ
Johnson, WN
Kamae, T
Katagiri, H
Kataoka, J
Kavelaars, A
Kawai, N
Kelly, H
Kennea, J
Kerr, M
Kippen, RM
Knodlseder, J
Kocevski, D
Kocian, ML
Komin, N
Kouveliotou, C
Kuehn, F
Kuss, M
Lande, J
Landriu, D
Larsson, S
Latronico, L
Lavalley, C
Lee, B
Lee, SH
Lemoine-Goumard, M
Lichti, GG
Longo, F
Loparco, F
Lott, B
Lovellette, MN
Lubrano, P
Madejski, GM
Makeev, A
Marangelli, B
Mazziotta, MN
McBreen, S
McEnery, JE
McGlynn, S
Meegan, C
Meszaros, P
Meurer, C
Michelson, PF
Minuti, M
Mirizzi, N
Mitthumsiri, W
Mizuno, T
Moiseev, AA
Monte, C
Monzani, ME
Moretti, E
Morselli, A
Moskalenko, IV
Murgia, S
Nakamori, T
Nelson, D
Nolan, PL
Norris, JP
Nuss, E
Ohno, M
Ohsugi, T
Okumura, A
Omodei, N
Orlando, E
Ormes, JF
Ozaki, M
Paciesas, WS
Paneque, D
Panetta, JH
Parent, D
Pelassa, V
Pepe, M
Perri, M
Pesce-Rollins, M
Petrosian, V
Pinchera, M
Piron, F
Porter, TA
Preece, R
Raino, S
Ramirez-Ruiz, E
Rando, R
Rapposelli, E
Razzano, M
Razzaque, S
Rea, N
Reimer, A
Reimer, O
Reposeur, T
Reyes, LC
Ritz, S
Rochester, LS
Rodriguez, AY
Roth, M
Ryde, F
Sadrozinski, HFW
Sanchez, D
Sander, A
Parkinson, PMS
Scargle, JD
Schalk, TL
Segal, KN
Sgro, C
Shimokawabe, T
Siskind, EJ
Smith, DA
Smith, PD
Spandre, G
Spinelli, P
Stamatikos, M
Starck, JL
Stecker, FW
Steinle, H
Stephens, TE
Strickman, MS
Suson, DJ
Tagliaferri, G
Tajima, H
Takahashi, H
Takahashi, T
Tanaka, T
Tenze, A
Thayer, JB
Thayer, JG
Thompson, DJ
Tibaldo, L
Torres, DF
Tosti, G
Tramacere, A
Turri, M
Tuvi, S
Usher, TL
van der Horst, AJ
Vigiani, L
Vilchez, N
Vitale, V
von Kienlin, A
Waite, AP
Williams, DA
Wilson-Hodge, C
Winer, BL
Wood, KS
Wu, XF
Yamazaki, R
Ylinen, T
Ziegler, M
AF Abdo, A. A.
Ackermann, M.
Arimoto, M.
Asano, K.
Atwood, W. B.
Axelsson, M.
Baldini, L.
Ballet, J.
Band, D. L.
Barbiellini, G.
Baring, M. G.
Bastieri, D.
Battelino, M.
Baughman, B. M.
Bechtol, K.
Bellardi, F.
Bellazzini, R.
Berenji, B.
Bhat, P. N.
Bissaldi, E.
Blandford, R. D.
Bloom, E. D.
Bogaert, G.
Bogart, J. R.
Bonamente, E.
Bonnell, J.
Borgland, A. W.
Bouvier, A.
Bregeon, J.
Brez, A.
Briggs, M. S.
Brigida, M.
Bruel, P.
Burnett, T. H.
Burrows, D.
Busetto, G.
Caliandro, G. A.
Cameron, R. A.
Caraveo, P. A.
Casandjian, J. M.
Ceccanti, M.
Cecchi, C.
Celotti, A.
Charles, E.
Chekhtman, A.
Cheung, C. C.
Chiang, J.
Ciprini, S.
Claus, R.
Cohen-Tanugi, J.
Cominsky, L. R.
Connaughton, V.
Conrad, J.
Costamante, L.
Cutini, S.
DeKlotz, M.
Dermer, C. D.
de Angelis, A.
de Palma, F.
Digel, S. W.
Dingus, B. L.
do Couto e Silva, E.
Drell, P. S.
Dubois, R.
Dumora, D.
Edmonds, Y.
Evans, P. A.
Fabiani, D.
Farnier, C.
Favuzzi, C.
Finke, J.
Fishman, G.
Focke, W. B.
Frailis, M.
Fukazawa, Y.
Funk, S.
Fusco, P.
Gargano, F.
Gasparrini, D.
Gehrels, N.
Germani, S.
Giebels, B.
Giglietto, N.
Giommi, P.
Giordano, F.
Glanzman, T.
Godfrey, G.
Goldstein, A.
Granot, J.
Greiner, J.
Grenier, I. A.
Grondin, M. -H.
Grove, J. E.
Guillemot, L.
Guiriec, S.
Haller, G.
Hanabata, Y.
Harding, A. K.
Hayashida, M.
Hays, E.
Morata, J. A. Hernando
Hoover, A.
Hughes, R. E.
Johannesson, G.
Johnson, A. S.
Johnson, R. P.
Johnson, T. J.
Johnson, W. N.
Kamae, T.
Katagiri, H.
Kataoka, J.
Kavelaars, A.
Kawai, N.
Kelly, H.
Kennea, J.
Kerr, M.
Kippen, R. M.
Knoedlseder, J.
Kocevski, D.
Kocian, M. L.
Komin, N.
Kouveliotou, C.
Kuehn, F.
Kuss, M.
Lande, J.
Landriu, D.
Larsson, S.
Latronico, L.
Lavalley, C.
Lee, B.
Lee, S. -H.
Lemoine-Goumard, M.
Lichti, G. G.
Longo, F.
Loparco, F.
Lott, B.
Lovellette, M. N.
Lubrano, P.
Madejski, G. M.
Makeev, A.
Marangelli, B.
Mazziotta, M. N.
McBreen, S.
McEnery, J. E.
McGlynn, S.
Meegan, C.
Meszaros, P.
Meurer, C.
Michelson, P. F.
Minuti, M.
Mirizzi, N.
Mitthumsiri, W.
Mizuno, T.
Moiseev, A. A.
Monte, C.
Monzani, M. E.
Moretti, E.
Morselli, A.
Moskalenko, I. V.
Murgia, S.
Nakamori, T.
Nelson, D.
Nolan, P. L.
Norris, J. P.
Nuss, E.
Ohno, M.
Ohsugi, T.
Okumura, A.
Omodei, N.
Orlando, E.
Ormes, J. F.
Ozaki, M.
Paciesas, W. S.
Paneque, D.
Panetta, J. H.
Parent, D.
Pelassa, V.
Pepe, M.
Perri, M.
Pesce-Rollins, M.
Petrosian, V.
Pinchera, M.
Piron, F.
Porter, T. A.
Preece, R.
Raino, S.
Ramirez-Ruiz, E.
Rando, R.
Rapposelli, E.
Razzano, M.
Razzaque, S.
Rea, N.
Reimer, A.
Reimer, O.
Reposeur, T.
Reyes, L. C.
Ritz, S.
Rochester, L. S.
Rodriguez, A. Y.
Roth, M.
Ryde, F.
Sadrozinski, H. F. -W.
Sanchez, D.
Sander, A.
Parkinson, P. M. Saz
Scargle, J. D.
Schalk, T. L.
Segal, K. N.
Sgro, C.
Shimokawabe, T.
Siskind, E. J.
Smith, D. A.
Smith, P. D.
Spandre, G.
Spinelli, P.
Stamatikos, M.
Starck, J. -L.
Stecker, F. W.
Steinle, H.
Stephens, T. E.
Strickman, M. S.
Suson, D. J.
Tagliaferri, G.
Tajima, H.
Takahashi, H.
Takahashi, T.
Tanaka, T.
Tenze, A.
Thayer, J. B.
Thayer, J. G.
Thompson, D. J.
Tibaldo, L.
Torres, D. F.
Tosti, G.
Tramacere, A.
Turri, M.
Tuvi, S.
Usher, T. L.
van der Horst, A. J.
Vigiani, L.
Vilchez, N.
Vitale, V.
von Kienlin, A.
Waite, A. P.
Williams, D. A.
Wilson-Hodge, C.
Winer, B. L.
Wood, K. S.
Wu, X. F.
Yamazaki, R.
Ylinen, T.
Ziegler, M.
CA Fermi LAT Collaboration
Fermi GBM Collaboration
TI Fermi Observations of High-Energy Gamma-Ray Emission from GRB 080916C
SO SCIENCE
LA English
DT Article
ID BURST SPECTRA; BATSE OBSERVATIONS; SHOCK MODEL; NEUTRINOS; COMPONENT;
PHOTONS
AB Gamma-ray bursts (GRBs) are highly energetic explosions signaling the death of massive stars in distant galaxies. The Gamma-ray Burst Monitor and Large Area Telescope onboard the Fermi Observatory together record GRBs over a broad energy range spanning about 7 decades of gamma-ray energy. In September 2008, Fermi observed the exceptionally luminous GRB 080916C, with the largest apparent energy release yet measured. The high-energy gamma rays are observed to start later and persist longer than the lower energy photons. A simple spectral form fits the entire GRB spectrum, providing strong constraints on emission models. The known distance of the burst enables placing lower limits on the bulk Lorentz factor of the outflow and on the quantum gravity mass.
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[Abdo, A. A.; Chekhtman, A.; Dermer, C. D.; Finke, J.; Grove, J. E.; Johnson, W. N.; Lovellette, M. N.; Makeev, A.; Razzaque, S.; Strickman, M. S.] USN, Res Lab, Div Space Sci, Washington, DC 20375 USA.
[Ackermann, M.; Blandford, R. D.; Bloom, E. D.; Bogart, J. R.; Borgland, A. W.; Bouvier, A.; Cameron, R. A.; Charles, E.; Chiang, J.; Claus, R.; Costamante, L.; Digel, S. W.; do Couto e Silva, E.; Drell, P. S.; Dubois, R.; Edmonds, Y.; Focke, W. B.; Glanzman, T.; Godfrey, G.; Haller, G.; Hayashida, M.; Johannesson, G.; Johnson, A. S.; Kamae, T.; Kavelaars, A.; Kelly, H.; Kocevski, D.; Kocian, M. L.; Lande, J.; Lee, S. -H.; Madejski, G. M.; Michelson, P. F.; Mitthumsiri, W.; Monzani, M. E.; Moskalenko, I. V.; Murgia, S.; Nelson, D.; Nolan, P. L.; Paneque, D.; Panetta, J. H.; Petrosian, V.; Reimer, A.; Reimer, O.; Rochester, L. S.; Tajima, H.; Tanaka, T.; Turri, M.; Tuvi, S.; Usher, T. L.; Waite, A. P.] Stanford Univ, WW Hansen Expt Phys Lab, Kavli Inst Particle Astrophys & Cosmol, Dept Phys, Stanford, CA 94305 USA.
[Ackermann, M.; Blandford, R. D.; Bloom, E. D.; Bogart, J. R.; Borgland, A. W.; Bouvier, A.; Cameron, R. A.; Charles, E.; Chiang, J.; Claus, R.; Costamante, L.; Digel, S. W.; do Couto e Silva, E.; Drell, P. S.; Dubois, R.; Edmonds, Y.; Focke, W. B.; Glanzman, T.; Godfrey, G.; Haller, G.; Hayashida, M.; Johannesson, G.; Johnson, A. S.; Kamae, T.; Kavelaars, A.; Kelly, H.; Kocevski, D.; Kocian, M. L.; Lande, J.; Lee, S. -H.; Madejski, G. M.; Michelson, P. F.; Mitthumsiri, W.; Monzani, M. E.; Moskalenko, I. V.; Murgia, S.; Nelson, D.; Nolan, P. L.; Paneque, D.; Panetta, J. H.; Petrosian, V.; Reimer, A.; Reimer, O.; Rochester, L. S.; Tajima, H.; Tanaka, T.; Turri, M.; Tuvi, S.; Usher, T. L.; Waite, A. P.] Stanford Univ, SLAC Natl Accelerator Lab, Stanford, CA 94305 USA.
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[Dingus, B. L.; Hoover, A.; Kippen, R. M.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
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[Evans, P. A.] Univ Leicester, Dept Phys & Astron, Leicester LE1 7RH, Leics, England.
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[Morata, J. A. Hernando] European Org Nucl Res CERN, CH-1211 Geneva, Switzerland.
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RP Briggs, MS (reprint author), Univ Alabama, Huntsville, AL 35899 USA.
EM michael.briggs@nasa.gov; charles.dermer@nrl.navy.mil;
htajima@slac.stanford.edu
RI Baldini, Luca/E-5396-2012; lubrano, pasquale/F-7269-2012; Morselli,
Aldo/G-6769-2011; Kuss, Michael/H-8959-2012; giglietto,
nicola/I-8951-2012; Nolan, Patrick/A-5582-2009; De Angelis,
Alessandro/B-5372-2009; Starck, Jean-Luc/D-9467-2011; Thompson,
David/D-2939-2012; Stecker, Floyd/D-3169-2012; Harding,
Alice/D-3160-2012; Gehrels, Neil/D-2971-2012; McEnery,
Julie/D-6612-2012; Tosti, Gino/E-9976-2013; Bissaldi,
Elisabetta/K-7911-2016; Wu, Xuefeng/G-5316-2015; Torres,
Diego/O-9422-2016; Orlando, E/R-5594-2016; Komin, Nukri/J-6781-2015; Saz
Parkinson, Pablo Miguel/I-7980-2013; Ozaki, Masanobu/K-1165-2013; Rando,
Riccardo/M-7179-2013; Hays, Elizabeth/D-3257-2012; Johnson,
Neil/G-3309-2014; Reimer, Olaf/A-3117-2013; Funk, Stefan/B-7629-2015;
Rea, Nanda/I-2853-2015; Gargano, Fabio/O-8934-2015; Loparco,
Francesco/O-8847-2015; Johannesson, Gudlaugur/O-8741-2015; Moskalenko,
Igor/A-1301-2007; Mazziotta, Mario /O-8867-2015; Sgro,
Carmelo/K-3395-2016
OI lubrano, pasquale/0000-0003-0221-4806; Morselli,
Aldo/0000-0002-7704-9553; giglietto, nicola/0000-0002-9021-2888; Starck,
Jean-Luc/0000-0003-2177-7794; Thompson, David/0000-0001-5217-9135;
Bissaldi, Elisabetta/0000-0001-9935-8106; Wu,
Xuefeng/0000-0002-6299-1263; Torres, Diego/0000-0002-1522-9065; Sgro',
Carmelo/0000-0001-5676-6214; Giordano, Francesco/0000-0002-8651-2394;
Dingus, Brenda/0000-0001-8451-7450; Stephens,
Thomas/0000-0003-3065-6871; SPINELLI, Paolo/0000-0001-6688-8864; giommi,
paolo/0000-0002-2265-5003; De Angelis, Alessandro/0000-0002-3288-2517;
Frailis, Marco/0000-0002-7400-2135; Caraveo,
Patrizia/0000-0003-2478-8018; Cutini, Sara/0000-0002-1271-2924;
Gasparrini, Dario/0000-0002-5064-9495; Tramacere,
Andrea/0000-0002-8186-3793; Baldini, Luca/0000-0002-9785-7726;
Tagliaferri, Gianpiero/0000-0003-0121-0723; Komin,
Nukri/0000-0003-3280-0582; Preece, Robert/0000-0003-1626-7335; Bastieri,
Denis/0000-0002-6954-8862; Omodei, Nicola/0000-0002-5448-7577;
Pesce-Rollins, Melissa/0000-0003-1790-8018; Perri,
Matteo/0000-0003-3613-4409; Moretti, Elena/0000-0001-5477-9097; Reimer,
Olaf/0000-0001-6953-1385; Funk, Stefan/0000-0002-2012-0080; Rea,
Nanda/0000-0003-2177-6388; Gargano, Fabio/0000-0002-5055-6395; Loparco,
Francesco/0000-0002-1173-5673; Johannesson,
Gudlaugur/0000-0003-1458-7036; Moskalenko, Igor/0000-0001-6141-458X;
Mazziotta, Mario /0000-0001-9325-4672;
FU NASA; Department of Energy in the United States; Commissariat a lEnergie
Atomique; Centre National de la Recherche Scientifique/Institut National
de Physique Nucleaire et de Physique des Particules in France; Agenzia
Spaziale Italiana; Istituto Nazionale di Fisica Nucleare in Italy;
Ministry of Education, Culture, Sports, Science and Technology (MEXT);
High Energy Accelerator Research Organization (KEK); Japan Aerospace
Exploration Agency (JAXA) in Japan; K. A. Wallenberg Foundation; Swedish
Research Council; Swedish National Space Board in Sweden; Deutsches
Zentrum fur Luftund Raumfahrt in Germany
FX A. A. Abdo, J. Finke, and S. Razzaque are National Research Council
Research Associates. A. J. van der Horst is a NASA Postdoctoral Program
Fellow. The Fermi LAT Collaboration acknowledges the support of a number
of agencies and institutes. These include NASA and the Department of
Energy in the United States; the Commissariat a lEnergie Atomique and
the Centre National de la Recherche Scientifique/Institut National de
Physique Nucleaire et de Physique des Particules in France; the Agenzia
Spaziale Italiana and the Istituto Nazionale di Fisica Nucleare in
Italy; the Ministry of Education, Culture, Sports, Science and
Technology (MEXT), High Energy Accelerator Research Organization (KEK),
and Japan Aerospace Exploration Agency (JAXA) in Japan; and the K. A.
Wallenberg Foundation, the Swedish Research Council, and the Swedish
National Space Board in Sweden. J.C. is a Royal Swedish Academy of
Sciences Research fellow supported by a grant from the K. A. Wallenberg
foundation. The Fermi GBM Collaboration acknowledges the support of NASA
in the United States and Deutsches Zentrum fur Luftund Raumfahrt in
Germany and thanks L. Gibby, A. English, and F. Kroeger.
NR 39
TC 395
Z9 399
U1 4
U2 29
PU AMER ASSOC ADVANCEMENT SCIENCE
PI WASHINGTON
PA 1200 NEW YORK AVE, NW, WASHINGTON, DC 20005 USA
SN 0036-8075
EI 1095-9203
J9 SCIENCE
JI Science
PD MAR 27
PY 2009
VL 323
IS 5922
BP 1688
EP 1693
DI 10.1126/science.1169101
PG 6
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA 424IG
UT WOS:000264559800029
ER
PT J
AU Lau, KC
Turner, CH
Dunlap, BI
AF Lau, Kah Chun
Turner, C. Heath
Dunlap, Brett I.
TI Kinetic Monte Carlo simulation of O2- incorporation in the yttria
stabilized zirconia (YSZ) fuel cell
SO CHEMICAL PHYSICS LETTERS
LA English
DT Article
ID ION MASS-SPECTROMETRY; OXYGEN REDUCTION; PT(111) SURFACE; ADSORPTION;
DIFFUSION; IMPEDANCE; TRANSPORT; ELECTROLYTES; INTERFACE; PLATINUM
AB The electrochemical oxygen reduction reaction (ORR) of the YSZ fuel cell cathode is studied with Kinetic Monte Carlo (KMC) simulations. Under near normal operating conditions, the coupled influences of the underlying elementary chemical steps are studied via sensitivity analysis based on the ionic current density, J. The ionic current is most sensitive to variations in the O2- incorporation rate into the YSZ. Consequently, the oxygen segregation-induced strong concentration gradient at the electric double layer near the cathode/YSZ interfaces is suggested to be an important intrinsic material property that has a strong impact on the performance of such electrochemical devices. (c) 2009 Elsevier B.V. All rights reserved.
C1 [Lau, Kah Chun] George Washington Univ, Dept Chem, Washington, DC 20052 USA.
[Turner, C. Heath] Univ Alabama, Dept Biol & Chem Engn, Tuscaloosa, AL 35487 USA.
[Dunlap, Brett I.] USN, Res Lab, Code 6189, Washington, DC 20375 USA.
RP Lau, KC (reprint author), George Washington Univ, Dept Chem, Washington, DC 20052 USA.
EM kclau@gwu.edu
RI Lau, Kah Chun/A-9348-2013;
OI Lau, Kah Chun/0000-0002-4925-3397; Dunlap, Brett/0000-0003-1356-6559
FU The Office of Naval Research
FX The Office of Naval Research, directly and through the Naval Research
Laboratory supported this research.
NR 33
TC 11
Z9 11
U1 1
U2 11
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 MAR 26
PY 2009
VL 471
IS 4-6
BP 326
EP 330
DI 10.1016/j.cplett.2009.02.055
PG 5
WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical
SC Chemistry; Physics
GA 420VK
UT WOS:000264317100027
ER
PT J
AU Boeneman, K
Mei, BC
Dennis, AM
Bao, G
Deschamps, JR
Mattoussi, H
Medintz, IL
AF Boeneman, Kelly
Mei, Bing C.
Dennis, Allison M.
Bao, Gang
Deschamps, Jeffrey R.
Mattoussi, Hedi
Medintz, Igor L.
TI Sensing Caspase 3 Activity with Quantum Dot-Fluorescent Protein
Assemblies
SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Article
ID RESONANCE ENERGY-TRANSFER; INHIBITORS; APOPTOSIS; FRET; PEPTIDES;
CANCER; PROBES; PAIRS
AB We demonstrate the use of a hybrid fluorescent protein semiconductor quantum dot (QD) sensor capable of specifically monitoring caspase 3 proteolytic activity. mCherry monomeric red fluorescent protein engineered to express an N-terminal caspace 3 cleavage site was ratiometricalty self-assembled to the surface of QDs using metal-affinity coordination. The proximity of the fluorescent protein to the QD allows it to function as an efficient fluorescence resonance energy transfer acceptor. Addition of caspase 3 enzyme to the QD-mCherry conjugates specifically cleaved the engineered mCherry tinker sequence, altering the energy transfer with the QD and allowing quantitative monitoring of proteolytic activity. Inherent advantages of this sensing approach include bacterial. expression of the protease substrate in a fluorescently 1 appended form, facile self-assembly to QDs, and the ability to recombinantly modify the substrate to target other proteases of interest.
C1 [Boeneman, Kelly; Medintz, Igor L.] USN, Res Lab, Ctr Biomol Sci & Engn, Washington, DC 20375 USA.
[Deschamps, Jeffrey R.] USN, Res Lab, Struct Matter Lab, Washington, DC 20375 USA.
[Mei, Bing C.; Mattoussi, Hedi] USN, Res Lab, Div Opt Sci, Washington, DC 20375 USA.
[Dennis, Allison M.; Bao, Gang] Georgia Inst Technol, Dept Biomed Engn, Atlanta, GA 30332 USA.
[Mei, Bing C.] Univ Massachusetts, Dept Chem Engn, Amherst, MA 01003 USA.
RP Medintz, IL (reprint author), USN, Res Lab, Ctr Biomol Sci & Engn, Washington, DC 20375 USA.
EM Igor.medintz@nrl.navy.mil
RI Gemmill, Kelly/G-2167-2012; Dennis, Allison/A-7654-2014;
OI Deschamps, Jeffrey/0000-0001-5845-0010
FU NIH [NLBI (HI-80711)]
FX The authors acknowledge DTRA and NRLNSI for support. K.B. acknowledges
Lin ASEE fellowship. G.B.,aid A.M.D. acknowledge the NIH NLBI
(HI-80711).
NR 21
TC 191
Z9 197
U1 13
U2 132
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 MAR 25
PY 2009
VL 131
IS 11
BP 3828
EP +
DI 10.1021/ja809721j
PG 4
WC Chemistry, Multidisciplinary
SC Chemistry
GA 427QB
UT WOS:000264792700019
PM 19243181
ER
PT J
AU Kioseoglou, G
Hanbicki, AT
Goswami, R
van 't Erve, OMJ
Li, CH
Spanos, G
Thompson, PE
Jonker, BT
AF Kioseoglou, G.
Hanbicki, A. T.
Goswami, R.
van 't Erve, O. M. J.
Li, C. H.
Spanos, G.
Thompson, P. E.
Jonker, B. T.
TI Electrical spin injection into Si: A comparison between Fe/Si Schottky
and Fe/Al2O3 tunnel contacts
SO APPLIED PHYSICS LETTERS
LA English
DT Article
DE acoustic emission; alumina; electroluminescence; elemental
semiconductors; iron; magnetisation; MIS structures; phonons; Schottky
barriers; semiconductor heterojunctions; silicon; spin polarised
transport; transmission electron microscopy; tunnelling
ID METAL/TUNNEL BARRIER CONTACT; SILICON; SEMICONDUCTOR; QUALITY
AB We compare electrical spin injection from Fe into Si n-i-p heterostructures using different tunnel barriers-a reversed biased Fe/Si Schottky contact and a Fe/Al2O3 barrier. The electroluminescence (EL) spectra are dominated by transverse acoustic and optical phonon emission for both types of structures. The circular polarization of the EL tracks the Fe magnetization, confirming that the spin-polarized electrons originate from the Fe in each case. However, the polarization is lower for the Fe/Si contact than for the Fe/Al2O3 contact. Transmission electron microscopy reveals a complex interface and intermixing for Fe/Si that is absent in Fe/Al2O3/Si.
C1 [Kioseoglou, G.; Hanbicki, A. T.; Goswami, R.; van 't Erve, O. M. J.; Li, C. H.; Spanos, G.; Thompson, P. E.; Jonker, B. T.] USN, Res Lab, Washington, DC 20375 USA.
[Kioseoglou, G.] Univ Crete, Dept Mat Sci & Technol, Iraklion 71003, Greece.
[Goswami, R.] SAIC, Washington, DC 20003 USA.
RP Kioseoglou, G (reprint author), USN, Res Lab, Washington, DC 20375 USA.
EM gnk@anvil.nrl.navy.mil; jonker@nrl.navy.mil
FU NRL; Office of Naval Research [N0001409WX21042]
FX This work was supported by core programs at NRL and by the Office of
Naval Research Contract No. N0001409WX21042.
NR 19
TC 33
Z9 33
U1 1
U2 14
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 MAR 23
PY 2009
VL 94
IS 12
AR 122106
DI 10.1063/1.3099049
PG 3
WC Physics, Applied
SC Physics
GA 425JT
UT WOS:000264633500023
ER
PT J
AU Zhang, N
Chen, Y
Zhang, Y
Dudley, M
Stahlbush, RE
AF Zhang, N.
Chen, Y.
Zhang, Y.
Dudley, M.
Stahlbush, R. E.
TI Nucleation mechanism of dislocation half-loop arrays in 4H-silicon
carbide homoepitaxial layers
SO APPLIED PHYSICS LETTERS
LA English
DT Article
DE dislocation arrays; nucleation; semiconductor epitaxial layers;
semiconductor growth; silicon compounds; stacking faults; vapour
deposition; wide band gap semiconductors
ID EPITAXY; DEFECTS
AB A model is presented for the formation mechanism of dislocation half-loop arrays formed during the homoepitaxial growth of 4H-SiC. The reorientation during glide of originally screw oriented threading segments of basal plane dislocation (BPD) renders them susceptible to conversion into sessile threading edge dislocations (TEDs), which subsequently pin the motion of the BPD. Continued glide during further growth enables parts of the mobile BPD to escape through the surface leaving arrays of half loops comprising two TEDs and a short BPD segment with significant edge component. The faulting behavior of the arrays under UV excitation is consistent with this model.
C1 [Zhang, N.; Chen, Y.; Zhang, Y.; Dudley, M.] SUNY Stony Brook, Dept Mat Sci & Engn, Stony Brook, NY 11794 USA.
[Stahlbush, R. E.] USN, Res Lab, Washington, DC 20375 USA.
RP Zhang, N (reprint author), SUNY Stony Brook, Dept Mat Sci & Engn, Stony Brook, NY 11794 USA.
EM mdudley@notes.cc.sunysb.edu
FU ONR [N0001140010348, N000140110302, N000140211014]; Dow Corning
Corporation [N0001405C0324, DAAD1701C0081]
FX This work is supported in part by ONR Grant Nos. N0001140010348,
N000140110302, and N000140211014 (contract monitor Dr. Colin Wood) and
by Dow Corning Corporation under Contract Nos. N0001405C0324 and
DAAD1701C0081. The wafer was provided by Cree Inc.
NR 20
TC 23
Z9 23
U1 2
U2 15
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 MAR 23
PY 2009
VL 94
IS 12
AR 122108
DI 10.1063/1.3105944
PG 3
WC Physics, Applied
SC Physics
GA 425JT
UT WOS:000264633500025
ER
PT J
AU Abelev, BI
Aggarwal, MM
Ahammed, Z
Anderson, BD
Arkhipkin, D
Averichev, GS
Bai, Y
Balewski, J
Barannikova, O
Barnsby, LS
Baudot, J
Baumgart, S
Beavis, DR
Bellwied, R
Benedosso, F
Betancourt, MJ
Betts, RR
Bharadwaj, S
Bhasin, A
Bhati, AK
Bichsel, H
Bielcik, J
Bielcikova, J
Biritz, B
Bland, LC
Bombara, M
Bonner, BE
Botje, M
Bouchet, J
Braidot, E
Brandin, AV
Bruna, E
Bueltmann, S
Burton, TP
Bystersky, M
Cai, XZ
Caines, H
Sanchez, MCD
Callner, J
Catu, O
Cebra, D
Cendejas, R
Cervantes, MC
Chajecki, Z
Chaloupka, P
Chattopadhyay, S
Chen, HF
Chen, JH
Chen, JY
Cheng, J
Cherney, M
Chikanian, A
Choi, KE
Christie, W
Chung, SU
Clarke, RF
Codrington, MJ
Coffin, JP
Corliss, R
Cormier, TM
Cosentino, MR
Cramer, JG
Crawford, HJ
Das, D
Dash, S
Daugherity, M
De Silva, C
Dedovich, TG
DePhillips, M
Derevschikov, AA
de Souza, RD
Didenko, L
Djawotho, P
Dogra, SM
Dong, X
Drachenberg, JL
Draper, JE
Du, F
Dunlop, JC
Mazumdar, MRD
Edwards, WR
Efimov, LG
Elhalhuli, E
Elnimr, M
Emelianov, V
Engelage, J
Eppley, G
Erazmus, B
Estienne, M
Eun, L
Fachini, P
Fatemi, R
Fedorisin, J
Feng, A
Filip, P
Finch, E
Fine, V
Fisyak, Y
Gagliardi, CA
Gaillard, L
Gangadharan, DR
Ganti, MS
Garcia-Solis, E
Ghazikhanian, V
Ghosh, P
Gorbunov, YN
Gordon, A
Grebenyuk, O
Grosnick, D
Grube, B
Guertin, SM
Guimaraes, KSFF
Gupta, A
Gupta, N
Guryn, W
Haag, B
Hallman, TJ
Hamed, A
Harris, JW
He, W
Heinz, M
Hepplemann, S
Hippolyte, B
Hirsch, A
Hjort, E
Hoffman, AM
Hoffmann, GW
Hofman, DJ
Hollis, RS
Huang, HZ
Humanic, TJ
Igo, G
Iordanova, A
Jacobs, P
Jacobs, WW
Jaki, P
Jin, F
Jones, CL
Jones, PG
Joseph, J
Judd, EG
Kabana, S
Kajimoto, K
Kang, K
Kapitan, J
Kaplan, M
Keane, D
Kechechyan, A
Kettler, D
Khodyrev, VY
Kikola, DP
Kiryluk, J
Kisiel, A
Klein, SR
Knospe, AG
Kocoloski, A
Koetke, DD
Kopytine, M
Kotchenda, L
Kouchpil, V
Kravtsov, P
Kravtsov, VI
Krueger, K
Krus, M
Kuhn, C
Kumar, L
Kurnadi, P
Lamont, MAC
Landgraf, JM
LaPointe, S
Lauret, J
Lebedev, A
Lednicky, R
Lee, CH
Leight, W
LeVine, MJ
Li, C
Li, Y
Lin, G
Lin, X
Lindenbaum, SJ
Lisa, MA
Liu, F
Liu, H
Liu, J
Liu, L
Ljubicic, T
Llope, WJ
Longacre, RS
Love, WA
Lu, Y
Ludlam, T
Lynn, D
Ma, GL
Ma, YG
Mahapatra, DP
Majka, R
Mall, OI
Mangotra, LK
Manweiler, R
Margetis, S
Markert, C
Matis, HS
Matulenko, YA
McShane, TS
Meschanin, A
Millner, R
Minaev, NG
Mioduszewski, S
Mischke, A
Mitchell, J
Mohanty, B
Morozov, DA
Munhoz, MG
Nandi, BK
Nattrass, C
Nayak, TK
Nelson, JM
Nepali, C
Netrakanti, PK
Ng, MJ
Nogach, LV
Nurushev, SB
Odyniec, G
Ogawa, A
Okada, H
Okorokov, V
Olson, D
Pachr, M
Page, BS
Pal, SK
Pandit, Y
Panebratsev, Y
Pawlak, T
Peitzmann, T
Perevoztchikov, V
Perkins, C
Peryt, W
Phatak, SC
Planinic, M
Pluta, J
Poljak, N
Poskanzer, AM
Potukuchi, BVKS
Prindle, D
Pruneau, C
Pruthi, NK
Putschke, J
Raniwala, R
Raniwala, S
Ray, RL
Redwine, R
Reed, R
Ridiger, A
Ritter, HG
Roberts, JB
Rogachevskiy, OV
Romero, JL
Rose, A
Roy, C
Ruan, L
Russcher, MJ
Rykov, V
Sahoo, R
Sakrejda, I
Sakuma, T
Salur, S
Sandweiss, J
Sarsour, M
Savin, I
Schambach, J
Scharenberg, RP
Schmitz, N
Seger, J
Selyuzhenkov, I
Seyboth, R
Shabetai, A
Shahaliev, E
Shao, M
Sharma, M
Shi, SS
Shi, XH
Sichtermann, E
Simon, F
Singaraju, RN
Skoby, MJ
Smirnov, N
Snellings, R
Sorensen, P
Sowinski, J
Spinka, HM
Srivastava, B
Stadnik, A
Stanislaus, TDS
Staszak, D
Strikhanov, M
Stringfellow, B
Suaide, AAP
Suarez, MC
Subba, NL
Sumbera, M
Sun, XM
Sun, Y
Sun, Z
Surrow, B
Symons, TJM
de Toledo, AS
Takahashi, J
Tang, AH
Tang, Z
Tarnowsky, T
Thein, D
Thomas, JH
Tian, J
Timmins, AR
Timoshenko, S
Tlusty, D
Tokarev, M
Trainor, TA
Tram, VN
Trattner, AL
Trentalange, S
Tribble, RE
Tsai, OD
Ulery, J
Ullrich, T
Underwood, DG
Van Buren, G
van Leeuwen, M
Molen, AMV
Vanfossen, JA
Varma, R
Vasconcelos, GMS
Vasilevski, IM
Vasiliev, AN
Videbaek, F
Vigdor, SE
Viyogi, YP
Vokal, S
Voloshin, SA
Wada, M
Waggoner, WT
Walker, M
Wang, F
Wang, G
Wang, JS
Wang, Q
Wang, X
Wang, XL
Wang, Y
Webb, JC
Westfall, GD
Whitten, C
Wieman, H
Wissink, SW
Witt, R
Wu, Y
Xu, N
Xu, QH
Xu, Y
Xu, Z
Yepes, P
Yoo, IK
Yue, Q
Zawisza, M
Zbroszczyk, H
Zhan, W
Zhang, H
Zhang, S
Zhang, WM
Zhang, Y
Zhang, ZP
Zhao, Y
Zhong, C
Zhou, J
Zoulkarneev, R
Zoulkarneeva, Y
Zuo, JX
AF Abelev, B. I.
Aggarwal, M. M.
Ahammed, Z.
Anderson, B. D.
Arkhipkin, D.
Averichev, G. S.
Bai, Y.
Balewski, J.
Barannikova, O.
Barnsby, L. S.
Baudot, J.
Baumgart, S.
Beavis, D. R.
Bellwied, R.
Benedosso, F.
Betancourt, M. J.
Betts, R. R.
Bharadwaj, S.
Bhasin, A.
Bhati, A. K.
Bichsel, H.
Bielcik, J.
Bielcikova, J.
Biritz, B.
Bland, L. C.
Bombara, M.
Bonner, B. E.
Botje, M.
Bouchet, J.
Braidot, E.
Brandin, A. V.
Bruna, E.
Bueltmann, S.
Burton, T. P.
Bystersky, M.
Cai, X. Z.
Caines, H.
Sanchez, M. Calderon de la Barca
Callner, J.
Catu, O.
Cebra, D.
Cendejas, R.
Cervantes, M. C.
Chajecki, Z.
Chaloupka, P.
Chattopadhyay, S.
Chen, H. F.
Chen, J. H.
Chen, J. Y.
Cheng, J.
Cherney, M.
Chikanian, A.
Choi, K. E.
Christie, W.
Chung, S. U.
Clarke, R. F.
Codrington, M. J.
Coffin, J. P.
Corliss, R.
Cormier, T. M.
Cosentino, M. R.
Cramer, J. G.
Crawford, H. J.
Das, D.
Dash, S.
Daugherity, M.
De Silva, C.
Dedovich, T. G.
DePhillips, M.
Derevschikov, A. A.
de Souza, R. Derradi
Didenko, L.
Djawotho, P.
Dogra, S. M.
Dong, X.
Drachenberg, J. L.
Draper, J. E.
Du, F.
Dunlop, J. C.
Mazumdar, M. R. Dutta
Edwards, W. R.
Efimov, L. G.
Elhalhuli, E.
Elnimr, M.
Emelianov, V.
Engelage, J.
Eppley, G.
Erazmus, B.
Estienne, M.
Eun, L.
Fachini, P.
Fatemi, R.
Fedorisin, J.
Feng, A.
Filip, P.
Finch, E.
Fine, V.
Fisyak, Y.
Gagliardi, C. A.
Gaillard, L.
Gangadharan, D. R.
Ganti, M. S.
Garcia-Solis, E.
Ghazikhanian, V.
Ghosh, P.
Gorbunov, Y. N.
Gordon, A.
Grebenyuk, O.
Grosnick, D.
Grube, B.
Guertin, S. M.
Guimaraes, K. S. F. F.
Gupta, A.
Gupta, N.
Guryn, W.
Haag, B.
Hallman, T. J.
Hamed, A.
Harris, J. W.
He, W.
Heinz, M.
Hepplemann, S.
Hippolyte, B.
Hirsch, A.
Hjort, E.
Hoffman, A. M.
Hoffmann, G. W.
Hofman, D. J.
Hollis, R. S.
Huang, H. Z.
Humanic, T. J.
Igo, G.
Iordanova, A.
Jacobs, P.
Jacobs, W. W.
Jaki, P.
Jin, F.
Jones, C. L.
Jones, P. G.
Joseph, J.
Judd, E. G.
Kabana, S.
Kajimoto, K.
Kang, K.
Kapitan, J.
Kaplan, M.
Keane, D.
Kechechyan, A.
Kettler, D.
Khodyrev, V. Yu.
Kikola, D. P.
Kiryluk, J.
Kisiel, A.
Klein, S. R.
Knospe, A. G.
Kocoloski, A.
Koetke, D. D.
Kopytine, M.
Kotchenda, L.
Kouchpil, V.
Kravtsov, P.
Kravtsov, V. I.
Krueger, K.
Krus, M.
Kuhn, C.
Kumar, L.
Kurnadi, P.
Lamont, M. A. C.
Landgraf, J. M.
LaPointe, S.
Lauret, J.
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Lednicky, R.
Lee, C. -H.
Leight, W.
LeVine, M. J.
Li, C.
Li, Y.
Lin, G.
Lin, X.
Lindenbaum, S. J.
Lisa, M. A.
Liu, F.
Liu, H.
Liu, J.
Liu, L.
Ljubicic, T.
Llope, W. J.
Longacre, R. S.
Love, W. A.
Lu, Y.
Ludlam, T.
Lynn, D.
Ma, G. L.
Ma, Y. G.
Mahapatra, D. P.
Majka, R.
Mall, O. I.
Mangotra, L. K.
Manweiler, R.
Margetis, S.
Markert, C.
Matis, H. S.
Matulenko, Yu. A.
McShane, T. S.
Meschanin, A.
Millner, R.
Minaev, N. G.
Mioduszewski, S.
Mischke, A.
Mitchell, J.
Mohanty, B.
Morozov, D. A.
Munhoz, M. G.
Nandi, B. K.
Nattrass, C.
Nayak, T. K.
Nelson, J. M.
Nepali, C.
Netrakanti, P. K.
Ng, M. J.
Nogach, L. V.
Nurushev, S. B.
Odyniec, G.
Ogawa, A.
Okada, H.
Okorokov, V.
Olson, D.
Pachr, M.
Page, B. S.
Pal, S. K.
Pandit, Y.
Panebratsev, Y.
Pawlak, T.
Peitzmann, T.
Perevoztchikov, V.
Perkins, C.
Peryt, W.
Phatak, S. C.
Planinic, M.
Pluta, J.
Poljak, N.
Poskanzer, A. M.
Potukuchi, B. V. K. S.
Prindle, D.
Pruneau, C.
Pruthi, N. K.
Putschke, J.
Raniwala, R.
Raniwala, S.
Ray, R. L.
Redwine, R.
Reed, R.
Ridiger, A.
Ritter, H. G.
Roberts, J. B.
Rogachevskiy, O. V.
Romero, J. L.
Rose, A.
Roy, C.
Ruan, L.
Russcher, M. J.
Rykov, V.
Sahoo, R.
Sakrejda, I.
Sakuma, T.
Salur, S.
Sandweiss, J.
Sarsour, M.
Savin, I.
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Scharenberg, R. P.
Schmitz, N.
Seger, J.
Selyuzhenkov, I.
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Shahaliev, E.
Shao, M.
Sharma, M.
Shi, S. S.
Shi, X. -H.
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Skoby, M. J.
Smirnov, N.
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Sorensen, P.
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Srivastava, B.
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Stanislaus, T. D. S.
Staszak, D.
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Stringfellow, B.
Suaide, A. A. P.
Suarez, M. C.
Subba, N. L.
Sumbera, M.
Sun, X. M.
Sun, Y.
Sun, Z.
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Symons, T. J. M.
de Toledo, A. Szanto
Takahashi, J.
Tang, A. H.
Tang, Z.
Tarnowsky, T.
Thein, D.
Thomas, J. H.
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Timmins, A. R.
Timoshenko, S.
Tlusty, D.
Tokarev, M.
Trainor, T. A.
Tram, V. N.
Trattner, A. L.
Trentalange, S. .
Tribble, R. E.
Tsai, O. D.
Ulery, J.
Ullrich, T.
Underwood, D. G.
Van Buren, G.
van Leeuwen, M.
Molen, A. M. Vander
Vanfossen, J. A., Jr.
Varma, R.
Vasconcelos, G. M. S.
Vasilevski, I. M.
Vasiliev, A. N.
Videbaek, F.
Vigdor, S. E.
Viyogi, Y. P.
Vokal, S.
Voloshin, S. A.
Wada, M.
Waggoner, W. T.
Walker, M.
Wang, F.
Wang, G.
Wang, J. S.
Wang, Q.
Wang, X.
Wang, X. L.
Wang, Y.
Webb, J. C.
Westfall, G. D.
Whitten, C., Jr.
Wieman, H.
Wissink, S. W.
Witt, R.
Wu, Y.
Xu, N.
Xu, Q. H.
Xu, Y.
Xu, Z.
Yepes, P.
Yoo, I. -K.
Yue, Q.
Zawisza, M.
Zbroszczyk, H.
Zhan, W.
Zhang, H.
Zhang, S.
Zhang, W. M.
Zhang, Y.
Zhang, Z. P.
Zhao, Y.
Zhong, C.
Zhou, J.
Zoulkarneev, R.
Zoulkarneeva, Y.
Zuo, J. X.
TI Energy and system size dependence of phi meson production in Cu plus Cu
and Au plus Au collisions
SO PHYSICS LETTERS B
LA English
DT Article
DE Particle production; Strangeness enhancement; Canonical suppression;
Quark-gluon plasma; Resonances
ID QUARK-GLUON PLASMA; HEAVY-ION COLLISIONS; PROTON-PROTON COLLISIONS;
STRANGENESS ENHANCEMENT; NUCLEUS COLLISIONS; PP COLLISIONS; MODEL; RULE;
COLLABORATION; CONSERVATION
AB We study the beam-energy and system-size dependence of phi meson production (using the hadronic decay mode phi -> K+ K-) by comparing the new results from Cu + Cu collisions and previously reported Au + Au collisions at root s(NN) = 62.4 and 200 GeV measured in the STAR experiment at RHIC. Data presented in this Letter are from mid-rapidity (vertical bar y vertical bar < 0.5) for 0.4 < p(T) < 5 GeV/c. At a given beam energy, the transverse momentum distributions for phi mesons are observed to be similar in yield and shape for Cu + Cu and Au + Au colliding systems with similar average numbers of participating nucleons. The phi meson yields in nucleus-nucleus collisions, normalized by the average number of participating nucleons, are found to be enhanced relative to those from p + p collisions. The enhancement for phi mesons lies between strange hadrons having net strangeness = 1 (K- and <(A)over bar>) and net strangeness = 2 (Xi). The enhancement for phi mesons is observed to be higher at root s(NN) = 200 GeV compared to 62.4 GeV. These observations for the produced phi(s (s) over bar) mesons clearly suggest that, at these collision energies, the source of enhancement of strange hadrons is related to the formation of a dense partonic medium in high energy nucleus-nucleus collisions and cannot be alone due to canonical suppression of their production in smaller systems. (C) 2009 Elsevier B.V. All rights reserved.
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[Crawford, H. J.; Engelage, J.; Judd, E. G.; Ng, M. J.; Perkins, C.; Trattner, A. L.] Univ Calif Berkeley, Berkeley, CA 94720 USA.
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[Fatemi, R.] Univ Kentucky, Lexington, KY 40506 USA.
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[Schmitz, N.; Seyboth, R.; Simon, F.] Max Planck Inst Phys & Astrophys, D-80805 Munich, Germany.
[Molen, A. M. Vander; Westfall, G. D.] Michigan State Univ, E Lansing, MI 48824 USA.
[Brandin, A. V.; Emelianov, V.; Kotchenda, L.; Kravtsov, P.; Okorokov, V.; Ridiger, A.; Strikhanov, M.; Timoshenko, S.] Moscow Engn Phys Inst, Moscow 115409, Russia.
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[Bai, Y.; Benedosso, F.; Botje, M.; Braidot, E.; Mischke, A.; Peitzmann, T.; Russcher, M. J.; Snellings, R.; van Leeuwen, M.] Univ Utrecht, Amsterdam, Netherlands.
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[Hirsch, A.; Netrakanti, P. K.; Scharenberg, R. P.; Skoby, M. J.; Srivastava, B.; Stringfellow, B.; Tarnowsky, T.; Ulery, J.; Wang, F.; Wang, Q.] Purdue Univ, W Lafayette, IN 47907 USA.
[Choi, K. E.; Grube, B.; Lee, C. -H.; Yoo, I. -K.] Pusan Natl Univ, Pusan 609735, South Korea.
[Bharadwaj, S.; Raniwala, R.; Raniwala, S.] Univ Rajasthan, Jaipur 302004, Rajasthan, India.
[Bonner, B. E.; Eppley, G.; Liu, J.; Llope, W. J.; Mitchell, J.; Roberts, J. B.; Yepes, P.; Zhou, J.] Rice Univ, Houston, TX 77251 USA.
[Cosentino, M. R.; Guimaraes, K. S. F. F.; Munhoz, M. G.; Suaide, A. A. P.; de Toledo, A. Szanto] Univ Sao Paulo, Sao Paulo, Brazil.
[Chen, H. F.; Li, C.; Shao, M.; Sun, Z.; Tang, Z.; Wang, X. L.; Xu, Y.; Zhang, Y.; Zhang, Z. P.; Zhao, Y.] Univ Sci & Technol China, Hefei 230026, Peoples R China.
[Cai, X. Z.; Chen, J. H.; Jin, F.; Ma, G. L.; Ma, Y. G.; Shi, X. -H.; Tian, J.; Zhang, S.; Zhang, W. M.; Zhong, C.; Zuo, J. X.] Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China.
[Erazmus, B.; Kabana, S.; Roy, C.; Sahoo, R.] SUBATECH, Nantes, France.
[Cervantes, M. C.; Clarke, R. F.; Codrington, M. J.; Drachenberg, J. L.; Gagliardi, C. A.; Hamed, A.; Mioduszewski, S.; Sarsour, M.; Tribble, R. E.; Wada, M.] Texas A&M Univ, College Stn, TX 77843 USA.
[Daugherity, M.; Hoffmann, G. W.; Kajimoto, K.; Markert, C.; Ray, R. L.; Schambach, J.; Thein, D.] Univ Texas Austin, Austin, TX 78712 USA.
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[Witt, R.] USN Acad, Annapolis, MD 21402 USA.
[Grosnick, D.; Koetke, D. D.; Manweiler, R.; Stanislaus, T. D. S.; Webb, J. C.] Valparaiso Univ, Valparaiso, IN 46383 USA.
[Pawlak, T.; Peryt, W.; Pluta, J.; Zawisza, M.; Zbroszczyk, H.] Warsaw Univ Technol, Warsaw, Poland.
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[Chen, J. Y.; Feng, A.; Li, Y.; Lin, X.; Liu, F.; Liu, L.; Lu, Y.; Shi, S. S.; Wu, Y.] CCNU HZNU, Inst Particle Phys, Wuhan 430079, Peoples R China.
[Baumgart, S.; Bruna, E.; Caines, H.; Catu, O.; Chikanian, A.; Du, F.; Finch, E.; Harris, J. W.; Heinz, M.; Knospe, A. G.; Lin, G.; Majka, R.; Nattrass, C.; Putschke, J.; Sandweiss, J.; Smirnov, N.] Yale Univ, New Haven, CT 06520 USA.
[Planinic, M.; Poljak, N.] Univ Zagreb, HR-10002 Zagreb, Croatia.
RP Mohanty, B (reprint author), Bhabha Atom Res Ctr, Ctr Variable Energy Cyclotron, Kolkata 700064, W Bengal, India.
EM bedanga@rcf.rhic.bnl.gov
RI Strikhanov, Mikhail/P-7393-2014; Dogra, Sunil /B-5330-2013; Fornazier
Guimaraes, Karin Silvia/H-4587-2016; Chaloupka, Petr/E-5965-2012;
Nattrass, Christine/J-6752-2016; Derradi de Souza, Rafael/M-4791-2013;
Suaide, Alexandre/L-6239-2016; Inst. of Physics, Gleb
Wataghin/A-9780-2017; Okorokov, Vitaly/C-4800-2017; Peitzmann,
Thomas/K-2206-2012; Witt, Richard/H-3560-2012; Voloshin,
Sergei/I-4122-2013; Pandit, Yadav/I-2170-2013; Lednicky,
Richard/K-4164-2013; Cosentino, Mauro/L-2418-2014; Sumbera,
Michal/O-7497-2014; Mischke, Andre/D-3614-2011; Takahashi,
Jun/B-2946-2012; Ma, Guo-Liang/B-4166-2012; Planinic, Mirko/E-8085-2012;
Shi, Xinghua/J-5299-2012; Yoo, In-Kwon/J-6222-2012
OI Sorensen, Paul/0000-0001-5056-9391; Thomas, James/0000-0002-6256-4536;
Strikhanov, Mikhail/0000-0003-2586-0405; Fornazier Guimaraes, Karin
Silvia/0000-0003-0578-9533; Nattrass, Christine/0000-0002-8768-6468;
Derradi de Souza, Rafael/0000-0002-2084-7001; Suaide,
Alexandre/0000-0003-2847-6556; Okorokov, Vitaly/0000-0002-7162-5345;
Fisyak, Yuri/0000-0002-3151-8377; Peitzmann, Thomas/0000-0002-7116-899X;
Pandit, Yadav/0000-0003-2809-7943; Cosentino,
Mauro/0000-0002-7880-8611; Sumbera, Michal/0000-0002-0639-7323;
Takahashi, Jun/0000-0002-4091-1779;
FU Offices of NP and HEP; US NSF; Sloan Foundation; DFG Excellence Cluster
EXC153 of Germany; CNRS/IN2P3; RA; RPL; EMN of France; STFC and EPSRC of
the United Kingdom; FAPESP of Brazil; Russian Ministry of Sci. and
Tech.; NNSFC of China; CAS of China; MoST of China; MoE of China; IRP
and GA of the Czech Republic; FOM of the Netherlands; DAE of the
Government of India; DST of the Government of India; CSIR of the
Government of India; Swiss NSF; Polish State Committee for Scientific
Research; Korea Sci. & Eng. Foundation
FX We thank the RHIC Operations Group and RCF at BNL, and the NERSC Center
at LBNL and the resources provided by the Open Science Grid consortium
for their support. This work was supported in part by the Offices of NP
and HEP within the US DOE Office of Science, the US NSF, the Sloan
Foundation, the DFG Excellence Cluster EXC153 of Germany, CNRS/IN2P3,
RA, RPL, and EMN of France, STFC and EPSRC of the United Kingdom, FAPESP
of Brazil, the Russian Ministry of Sci. and Tech., the NNSFC, CAS, MoST,
and MoE of China, IRP and GA of the Czech Republic, FOM of the
Netherlands, DAE, DST, and CSIR of the Government of India, Swiss NSF,
the Polish State Committee for Scientific Research, and the Korea Sci. &
Eng. Foundation.
NR 64
TC 54
Z9 55
U1 0
U2 10
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 MAR 23
PY 2009
VL 673
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BP 183
EP 191
DI 10.1016/j.physletb.2009.02.037
PG 9
WC Astronomy & Astrophysics; Physics, Nuclear; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 427PH
UT WOS:000264790700003
ER
PT J
AU Abrahamsson, M
Heuer, WB
Meyer, GJ
AF Abrahamsson, Maria
Heuer, William B.
Meyer, Gerald J.
TI PHYS 455-New Ru-based dyes with significantly increased extinction
coefficients and interesting electron and hole transfer properties
relevant to solar energy conversion
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
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DT Meeting Abstract
C1 [Abrahamsson, Maria; Meyer, Gerald J.] Johns Hopkins Univ, Dept Chem, Baltimore, MD 21218 USA.
[Heuer, William B.] USN Acad, Dept Chem, Annapolis, MD 21402 USA.
EM mabraha7@jhu.edu; meyer@jhu.edu
RI Abrahamsson, Maria/A-2487-2011
OI Abrahamsson, Maria/0000-0002-6931-1128
NR 0
TC 0
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U1 0
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PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD MAR 22
PY 2009
VL 237
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PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA V16GJ
UT WOS:000207857808290
ER
PT J
AU Brenner, AN
Dillner, DK
AF Brenner, Amanda N.
Dillner, Debra K.
TI Use of a bicyclo-[3.3.0]-octane system as a precursor for cyclopentane
rings containing three contiguous stereocenters
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
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DT Meeting Abstract
C1 [Brenner, Amanda N.; Dillner, Debra K.] USN Acad, Dept Chem, Annapolis, MD 21402 USA.
EM m090696@usna.edu; ddillner@usna.edu
NR 0
TC 0
Z9 0
U1 0
U2 0
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD MAR 22
PY 2009
VL 237
MA 921-CHED
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA V16GJ
UT WOS:000207857801630
ER
PT J
AU Brenner, IA
Fitzgerald, JP
AF Brenner, Ian A.
Fitzgerald, Jeffrey P.
TI Synthesis, characterization and optical limiting properties of thallium
and lead tetraazaporphyrins
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
C1 [Brenner, Ian A.; Fitzgerald, Jeffrey P.] USN Acad, Dept Chem, Annapolis, MD 21412 USA.
EM m090702@usna.edu; fitzgera@usna.edu
NR 0
TC 0
Z9 0
U1 0
U2 0
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD MAR 22
PY 2009
VL 237
MA 635-CHED
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA V16GJ
UT WOS:000207857801285
ER
PT J
AU Burton, TP
Cheek, GT
AF Burton, Toi Padrea
Cheek, Graham T.
TI Trace metal characterization of soils by X-ray fluorescence
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
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C1 [Burton, Toi Padrea; Cheek, Graham T.] USN Acad, Chem Dept Stop 9B, Annapolis, MD 21402 USA.
EM m090858@usna.edu; cheek@usna.edu
NR 0
TC 0
Z9 0
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U2 1
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD MAR 22
PY 2009
VL 237
MA 428-CHED
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA V16GJ
UT WOS:000207857802219
ER
PT J
AU Calame, JP
AF Calame, Jeffrey P.
TI Nanostructure-level modeling of nonlinear energy storage in
polymer-ceramic nanocomposites
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
C1 [Calame, Jeffrey P.] USN, Res Lab, Washington, DC 20375 USA.
EM jeffrey.calame@nrl.navy.mil
NR 0
TC 0
Z9 0
U1 0
U2 0
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD MAR 22
PY 2009
VL 237
MA 70-PMSE
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA V16GJ
UT WOS:000207857807101
ER
PT J
AU Checchi, KD
Domanski, T
Lin, S
Isaac, DD
AF Checchi, Kyle D.
Domanski, Tammy
Lin, Shirley
Isaac, Daniel D.
TI Observing bacterial cell-membrane disruption through induced
extracytoplasmic stress responses
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
C1 [Checchi, Kyle D.; Lin, Shirley; Isaac, Daniel D.] USN Acad, Dept Chem, Annapolis, MD 21402 USA.
[Domanski, Tammy] Anne Arundel Community Coll, Dept Biol, Arnold, MD 21012 USA.
EM m091146@usna.edu; lin@usna.edu; isaac@usna.edu
NR 0
TC 0
Z9 0
U1 1
U2 1
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD MAR 22
PY 2009
VL 237
MA 382-CHED
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA V16GJ
UT WOS:000207857802188
ER
PT J
AU DaBronzo, CL
Haverhals, LM
Schlessman, J
De Long, HC
Trulove, PC
AF DaBronzo, Courtney L.
Haverhals, Luke M.
Schlessman, Jamie
De Long, Hugh C.
Trulove, Paul C.
TI Study of green fluorescence protein in ionic liquids
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
C1 [DaBronzo, Courtney L.; Haverhals, Luke M.; Schlessman, Jamie; Trulove, Paul C.] USN Acad, Dept Chem, Annapolis, MD 21402 USA.
[De Long, Hugh C.] USAF, Directorate Chem & Life Sci, Off Sci Res, Arlington, VA 22203 USA.
EM m091578@usna.edu; haverhal@usna.edu; schlessm@usna.edu; trulove@usna.edu
NR 0
TC 0
Z9 0
U1 0
U2 2
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD MAR 22
PY 2009
VL 237
MA 416-CHED
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA V16GJ
UT WOS:000207857801088
ER
PT J
AU Denzel, JR
Prak, DJL
O'Sullivan, DW
AF Denzel, Jeffrey R.
Prak, Dianne J. Luning
O'Sullivan, Daniel W.
TI Characterization of the photochemical degradation products of
2,4-dinitrotoluene and 2,6-dinitrotoluene in seawater
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
C1 [Denzel, Jeffrey R.; Prak, Dianne J. Luning; O'Sullivan, Daniel W.] USN Acad, Dept Chem, Annapolis, MD 21402 USA.
EM m091746@usna.edu; osulliva@usna.edu
NR 0
TC 0
Z9 0
U1 0
U2 0
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD MAR 22
PY 2009
VL 237
MA 210-GEOC
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA V16GJ
UT WOS:000207857804252
ER
PT J
AU Elias, JS
Perez, AE
Baker, MB
Drane, TM
Geselbracht, MJ
Lytle, JC
Long, JW
Rolison, DR
AF Elias, Joseph S.
Perez, Alex E.
Baker, Megan B.
Drane, Thomas M.
Geselbracht, Margret J.
Lytle, Justin C.
Long, Jeffrey W.
Rolison, Debra R.
TI Toward a deeper understanding of the alkoxide sol-gel route to V2O5
ambigel nanoarchitectures
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
C1 [Elias, Joseph S.; Perez, Alex E.; Baker, Megan B.; Drane, Thomas M.; Geselbracht, Margret J.] Reed Coll, Dept Chem, Portland, OR 97202 USA.
[Lytle, Justin C.; Long, Jeffrey W.; Rolison, Debra R.] USN, Surface Chem Branch, Res Lab, Washington, DC 20375 USA.
EM eliasj@reed.edu; pereza@reed.edu; bakerme@reed.edu; mgeselbr@reed.edu;
jeffrey.long@nrl.navy.mil; rolison@nrl.navy.mil
NR 0
TC 0
Z9 0
U1 0
U2 4
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD MAR 22
PY 2009
VL 237
MA 752-INOR
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA V16GJ
UT WOS:000207857805588
ER
PT J
AU Fallis, S
Guenthner, AJ
Wright, ME
AF Fallis, Stephen
Guenthner, Andrew J.
Wright, Michael E.
TI Polyimide-lanthanide conjugates for optical gain applications
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
C1 [Fallis, Stephen; Guenthner, Andrew J.; Wright, Michael E.] USN, Chem Branch, Div Res, Air Warfare Ctr,Weap Div, China Lake, CA 93555 USA.
EM stephen.fallis@navy.mil
NR 0
TC 0
Z9 0
U1 0
U2 1
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD MAR 22
PY 2009
VL 237
MA 248-POLY
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA V16GJ
UT WOS:000207857807765
ER
PT J
AU Gregory, SM
Smith, VF
AF Gregory, Sarah M.
Smith, Virginia F.
TI Spectroscopic and metabolic characterization of deciduous leaf
senescence
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
C1 [Gregory, Sarah M.; Smith, Virginia F.] USN Acad, Dept Chem, Annapolis, MD 21032 USA.
EM vsmith@usna.edu
NR 0
TC 0
Z9 0
U1 0
U2 0
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD MAR 22
PY 2009
VL 237
MA 412-CHED
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA V16GJ
UT WOS:000207857801472
ER
PT J
AU Guenthner, AJ
Wright, ME
Fallis, S
Cambrea, LR
Cash, J
Yandek, GR
Petteys, BJ
AF Guenthner, Andrew J.
Wright, Michael E.
Fallis, Stephen
Cambrea, Lee R.
Cash, Jessica
Yandek, Gregory R.
Petteys, Brian J.
TI Kinetics of crosslinking and chromophore degradation in polyimide-based
high performance electro-optical materials
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
C1 [Guenthner, Andrew J.; Wright, Michael E.; Fallis, Stephen; Cambrea, Lee R.; Cash, Jessica; Petteys, Brian J.] USN, Air Warfare Ctr, Weap Div, China Lake, CA 93555 USA.
[Yandek, Gregory R.] USAF, AFRL RZSM, Res Lab, China Lake, CA 93555 USA.
EM andrew.guenthner@navy.mil; stephen.fallis@navy.mil;
lee.cambrea@navy.mil; jessica.cash@navy.mil
NR 0
TC 0
Z9 0
U1 0
U2 1
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD MAR 22
PY 2009
VL 237
MA 355-POLY
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA V16GJ
UT WOS:000207857807463
ER
PT J
AU Gutteridge, CE
Baxter, MC
Sadowski, BW
O'Neil, MT
McCalmont, WF
Gerena, L
AF Gutteridge, Clare E.
Baxter, Michael C.
Sadowski, Brett W.
O'Neil, Michael T.
McCalmont, William F.
Gerena, Lucia
TI Design of simpler analogs of a novel antimalarial agent to assist in
pharmacophore identification
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
C1 [Gutteridge, Clare E.; Baxter, Michael C.; Sadowski, Brett W.] USN Acad, Dept Chem, Annapolis, MD 21402 USA.
[O'Neil, Michael T.; McCalmont, William F.; Gerena, Lucia] Walter Reed Army Inst Res, Div Expt Therapeut, Silver Spring, MD 20910 USA.
EM gutterid@usna.edu
NR 0
TC 0
Z9 0
U1 0
U2 0
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD MAR 22
PY 2009
VL 237
MA 652-CHED
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA V16GJ
UT WOS:000207857801208
ER
PT J
AU Gutteridge, CE
Sadowski, BW
Baxter, MC
O'Neil, MT
McCalmont, WF
Gerena, L
Montip, G
AF Gutteridge, Clare E.
Sadowski, Brett W.
Baxter, Michael C.
O'Neil, Michael T.
McCalmont, William F.
Gerena, Lucia
Montip, Gettayacamin
TI Identification and development of a novel series of antimalarial agents
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
C1 [Gutteridge, Clare E.; Sadowski, Brett W.; Baxter, Michael C.] USN Acad, Dept Chem, Annapolis, MD 21402 USA.
[O'Neil, Michael T.; McCalmont, William F.; Gerena, Lucia] Walter Reed Army Inst Res, Div Expt Therapeut, Silver Spring, MD 20910 USA.
[Montip, Gettayacamin] Armed Forces Res Inst Med Sci, Bangkok 10400, Thailand.
EM gutterid@usna.edu
NR 0
TC 0
Z9 0
U1 0
U2 0
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD MAR 22
PY 2009
VL 237
MA 662-CHED
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA V16GJ
UT WOS:000207857801179
ER
PT J
AU Hanning-Lee, MA
Rowland, B
Bottelberghe, G
Gandhi, K
Hanson, FV
Walther, J
Wurster, L
Bowen, S
Jablonski, R
Abercrombie, PL
Butrow, AB
Conerly, K
Shircliffe, W
Kaufman, J
Jolley, D
AF Hanning-Lee, Mark Adrian
Rowland, Brad
Bottelberghe, Gregory
Gandhi, Kaushik
Hanson, Francis V.
Walther, John
Wurster, Lindsey
Bowen, Shawn
Jablonski, Raymond
Abercrombie, Patrice L.
Butrow, Ann B.
Conerly, Kelly
Shircliffe, William
Kaufman, Jonathan
Jolley, Darren
TI Compound selection for battlefield testing
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
C1 [Hanning-Lee, Mark Adrian; Bottelberghe, Gregory] Jacobs Dugway Team, Dugway, UT 84022 USA.
[Rowland, Brad; Jolley, Darren] Chem Test Div, Dugway, UT 84022 USA.
[Gandhi, Kaushik; Hanson, Francis V.] Univ Utah, Dept Chem & Fuels Engn, Salt Lake City, UT USA.
[Conerly, Kelly] USN, Ctr Surface Warfare, Dahlgren, VA 22448 USA.
[Shircliffe, William] Battelle Mem Inst, Brooks City Base, TX USA.
[Kaufman, Jonathan] CB Def Directorate, Def Threat Reduct Agcy, Patuxent River, MD USA.
EM mark.hanninglee@us.army.mil; Francis.Hanson@m.cc.utah.edu;
john.walther@us.army.mil; lindsey.wurster@us.army.mil;
shawn.bowen@us.army.mil; ray.jablonski@us.army.mil;
kelly.y.conerly@navy.mil; william.shircliffe.ctr@brooks.af.mil;
jonathan.kaufman@dtra.mil; darrenjolley@us.army.mil
NR 0
TC 0
Z9 0
U1 0
U2 0
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD MAR 22
PY 2009
VL 237
MA 4-IEC
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA V16GJ
UT WOS:000207857802734
ER
PT J
AU Hess, DM
Guenthner, AJ
AF Hess, David M.
Guenthner, Andrew J.
TI Formation of sparse network microstructures by
photopolymerization-induced phase separation and subsequent
solidification of solvent
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
C1 [Hess, David M.; Guenthner, Andrew J.] USN, Air Warfare Ctr, Weap Div, China Lake, CA 93555 USA.
EM andrew.guenthner@navy.mil
NR 0
TC 0
Z9 0
U1 0
U2 0
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD MAR 22
PY 2009
VL 237
MA 401-PMSE
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA V16GJ
UT WOS:000207857807235
ER
PT J
AU Isaacs, TA
Page, EC
Haverhals, LM
Reichert, WM
De Long, HC
Trulove, PC
AF Isaacs, Thelissa A.
Page, Eric C.
Haverhals, Luke M.
Reichert, W. Matthew
De Long, Hugh C.
Trulove, Paul C.
TI Preparation and reconstitution of mixed biopolymer nanocomposites from
ionic liquids
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
C1 [Isaacs, Thelissa A.; Page, Eric C.; Haverhals, Luke M.; Reichert, W. Matthew; Trulove, Paul C.] USN Acad, Dept Chem, Annapolis, MD 21402 USA.
[De Long, Hugh C.] USAF, Off Sci Res, Directorate Chem & Life Sci, Arlington, VA 22203 USA.
EM m093162@usna.edu; m085082@usna.edu; haverhal@usna.edu;
reichert@usna.edu; trulove@usna.edu
NR 0
TC 0
Z9 0
U1 0
U2 0
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD MAR 22
PY 2009
VL 237
MA 84-CELL
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA V16GJ
UT WOS:000207857801703
ER
PT J
AU Iyer, MR
Dersch, CM
Rothman, RB
Deschamps, JR
Jacobson, AE
Rice, KC
AF Iyer, Malliga R.
Dersch, Christina M.
Rothman, Richard B.
Deschamps, Jeffrey R.
Jacobson, Arthur E.
Rice, Kenner C.
TI Probes for narcotic receptor mediated phenomena: Binding studies on
racemic cis benzofuro[2,3-c]pyridin-8-ols
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
C1 [Iyer, Malliga R.; Jacobson, Arthur E.; Rice, Kenner C.] NIAAA, NIH, DFIHS, Rockville, MD 20852 USA.
[Dersch, Christina M.; Rothman, Richard B.] NIDA, Drug Design & Synth Sect, Chem Biol Res Branch, Rockville, MD 20852 USA.
[Dersch, Christina M.; Rothman, Richard B.] NIDA IRP, Clin Psychopharmacol Sect, NIH, DHHS, Baltimore, MD 21224 USA.
[Deschamps, Jeffrey R.] USN, Res Lab, Washington, DC 20375 USA.
EM iyerma@mail.nih.gov; aej@helix.nih.gov; kr21f@nih.gov
NR 0
TC 0
Z9 0
U1 0
U2 0
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD MAR 22
PY 2009
VL 237
MA 261-MEDI
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA V16GJ
UT WOS:000207857804650
ER
PT J
AU Kesireddy, NR
Smith, VF
AF Kesireddy, Nikhil R.
Smith, Virginia F.
TI Investigation of the ligand-binding mechanism of methionine sulfoxide
reductase A of E.coli
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
C1 [Kesireddy, Nikhil R.; Smith, Virginia F.] USN Acad, Dept Chem, Annapolis, MD 21402 USA.
EM m093432@usna.edu; vsmith@usna.edu
NR 0
TC 0
Z9 0
U1 0
U2 0
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD MAR 22
PY 2009
VL 237
MA 366-CHED
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA V16GJ
UT WOS:000207857802221
ER
PT J
AU Knudson, AJ
Schroeder, MJ
AF Knudson, Andrew J.
Schroeder, Maria J.
TI Utilizing polymer coatings for armor protection
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
C1 [Knudson, Andrew J.; Schroeder, Maria J.] USN Acad, Dept Chem, Annapolis, MD 21402 USA.
EM schroede@usna.edu
NR 0
TC 0
Z9 0
U1 0
U2 1
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD MAR 22
PY 2009
VL 237
MA 1028-CHED
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA V16GJ
UT WOS:000207857801203
ER
PT J
AU Kulp, JL
Clark, TD
AF Kulp, John L., III
Clark, Thomas D.
TI ORGN 261-Engineering heterochiral peptides
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
C1 [Kulp, John L., III; Clark, Thomas D.] USN, Res Lab, Div Chem, Washington, DC 20375 USA.
EM john.kulp@nrl.navy.mil; thomas.clark@nrl.navy.mil
NR 0
TC 0
Z9 0
U1 0
U2 0
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD MAR 22
PY 2009
VL 237
MA 261-ORGN
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA V16GJ
UT WOS:000207857806443
ER
PT J
AU Lipson, AG
Chernov, IP
Roussetski, AS
Tsivadze, AY
Lyakhov, BF
Cherdantsev, YP
Melich, ME
Saunin, EI
AF Lipson, Andrei G.
Chernov, Ivan P.
Roussetski, Alexei S.
Tsivadze, Aslan Yu.
Lyakhov, Boris F.
Cherdantsev, Yuri P.
Melich, Michael E.
Saunin, Eugeny I.
TI "Hot" deuteron generation and charged particle emission during
excitation of the deuterium subsystem in metal deuterides
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
C1 [Lipson, Andrei G.; Tsivadze, Aslan Yu.; Lyakhov, Boris F.; Saunin, Eugeny I.] Russian Acad Sci, AN Frumkin Inst Phys Chem & Electrochem, Moscow 119991, Russia.
[Chernov, Ivan P.; Cherdantsev, Yuri P.] Tomsk Polytech Univ, Dept Phys, Tomsk 634050, Russia.
[Roussetski, Alexei S.] Russian Acad Sci, PN Lebedev Phys Inst, Moscow 119991, Russia.
[Melich, Michael E.] USN, Postgrad Sch, Monterey, CA 93943 USA.
EM lipson@illinois.edu; chernov@tpu.ru; rusets@x4u.lebedev.ru;
tsiv@phyche.ac.ru; melich@alumni.rice.edu
RI Tsivadze, Aslan/G-7422-2014
NR 0
TC 0
Z9 0
U1 0
U2 0
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD MAR 22
PY 2009
VL 237
MA 46-ENVR
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA V16GJ
UT WOS:000207857804043
ER
PT J
AU Mandia, JJ
Reichert, WM
Trulove, PC
DeLong, H
AF Mandia, Jeremy J.
Reichert, W. Matthew
Trulove, Paul C.
DeLong, Hugh
TI Hydrolysis of cellulose utilizing ionic liquid based technology
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
C1 [Mandia, Jeremy J.] USN Acad, Dept Chem, Annapolis, MD 21412 USA.
[Reichert, W. Matthew; Trulove, Paul C.] USN Acad, Dept Chem, Annapolis, MD 21402 USA.
[DeLong, Hugh] USAF, Off Sci Res, Arlington, VA 22203 USA.
EM m094014@usna.edu; reichert@usna.edu; trulove@usna.edu
NR 0
TC 0
Z9 0
U1 0
U2 0
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD MAR 22
PY 2009
VL 237
MA 66-CELL
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA V16GJ
UT WOS:000207857801702
ER
PT J
AU McClean, RE
AF McClean, Roy E.
TI PHYS 280-DFT study on the reaction of V with SO2
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
C1 [McClean, Roy E.] USN Acad, Dept Chem, Annapolis, MD 21402 USA.
EM mcclean@usna.edu
NR 0
TC 0
Z9 0
U1 0
U2 0
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD MAR 22
PY 2009
VL 237
MA 280-PHYS
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA V16GJ
UT WOS:000207857808381
ER
PT J
AU Montgomery, MT
Boyd, TJ
Smith, JP
Walker, SE
Osburn, CL
AF Montgomery, Michael T.
Boyd, Thomas J.
Smith, Joseph P.
Walker, Shelby E.
Osburn, Christopher L.
TI 2,4,6-Trinitrotoluene mineralization and incorporation by natural
bacterial assemblages in the coastal ecosystems
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
C1 [Montgomery, Michael T.; Boyd, Thomas J.; Smith, Joseph P.] USN, Marine Biogeochem Sect, Res Lab, Washington, DC 20375 USA.
[Walker, Shelby E.] Natl Sci Fdn, Div Ocean Sci, Arlington, VA 22203 USA.
[Osburn, Christopher L.] N Carolina State Univ, Dept Marine Earth & Atmospher Sci, Raleigh, NC 27695 USA.
EM michael.montgomery@nrl.navy.mil; thomas.boyd@nrl.navy.mil;
joseph.smith@nrl.navy.mil; sewalker@nsf.gov; closburn@ncsu.edu
NR 0
TC 0
Z9 0
U1 0
U2 0
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD MAR 22
PY 2009
VL 237
MA 246-ENVR
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA V16GJ
UT WOS:000207857804060
ER
PT J
AU O'Sullivan, DW
Denzel, JR
Luning, DJ
AF O'Sullivan, Daniel W.
Denzel, Jeffrey R.
Luning, Dianne J.
TI Photolysis of 2,4,6-trinitrotoluene in seawater: Effects of salinity and
nitrate concentration.
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
C1 [O'Sullivan, Daniel W.; Denzel, Jeffrey R.; Luning, Dianne J.] USN Acad, Dept Chem, Annapolis, MD 21402 USA.
EM osulliva@usna.edu; m091746@usna.edu
NR 0
TC 0
Z9 0
U1 0
U2 2
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD MAR 22
PY 2009
VL 237
MA 232-ENVR
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA V16GJ
UT WOS:000207857804061
ER
PT J
AU Pant, RR
Fulmer, PA
Wynne, JH
AF Pant, Ramesh R.
Fulmer, Preston A.
Wynne, James H.
TI Development of durable surface active self-decontaminating polyurethane
coating
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
C1 [Pant, Ramesh R.; Fulmer, Preston A.; Wynne, James H.] USN, Div Chem, Res Lab, Washington, DC 20375 USA.
EM ramesh.pant@nrl.navy.mil
RI Fulmer, Preston/L-7702-2014
OI Fulmer, Preston/0000-0002-2981-576X
NR 0
TC 0
Z9 0
U1 0
U2 0
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD MAR 22
PY 2009
VL 237
MA 268-PMSE
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA V16GJ
UT WOS:000207857807024
ER
PT J
AU Perez, AE
Baker, MB
Drane, TM
Geselbracht, MJ
Lytle, JC
Long, JW
Rolison, DR
AF Perez, Alex E.
Baker, Megan B.
Drane, Thomas M.
Geselbracht, Margret J.
Lytle, Justin C.
Long, Jeffrey W.
Rolison, Debra R.
TI Probing the role of deliberate imperfection in the lithium ion insertion
behavior of V2O5 ambigel films
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
C1 [Perez, Alex E.; Baker, Megan B.; Drane, Thomas M.; Geselbracht, Margret J.] Reed Coll, Dept Chem, Portland, OR 97202 USA.
[Lytle, Justin C.; Long, Jeffrey W.; Rolison, Debra R.] USN, Surface Chem Branch, Res Lab, Washington, DC 20375 USA.
EM pereza@reed.edu; bakerme@reed.edu; mgeselbr@reed.edu;
jeffrey.long@nrl.navy.mil; rolison@nrl.navy.mil
NR 0
TC 0
Z9 0
U1 0
U2 0
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD MAR 22
PY 2009
VL 237
MA 753-INOR
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA V16GJ
UT WOS:000207857805572
ER
PT J
AU Richardson, SL
Allen, RN
Finkenstadt, D
Mehl, MJ
Pederson, MR
AF Richardson, Steven L.
Allen, Reeshemah N.
Finkenstadt, Daniel
Mehl, Michael J.
Pederson, Mark R.
TI First-principles studies of octacyclopropylcubane: A novel high-energy
density material
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
C1 [Richardson, Steven L.] Howard Univ, Dept Elect & Comp Engn, Sch Engn, Washington, DC 20059 USA.
[Allen, Reeshemah N.; Finkenstadt, Daniel; Mehl, Michael J.; Pederson, Mark R.] USN, Res Lab, Ctr Computat Mat Sci, Washington, DC 20375 USA.
EM srichards22@comcast.net; rallen@dave.nrl.navy.mil;
finkenst@dave.nrl.navy.mil; mehl@dave.nrl.navy.mil;
pederson@dave.nrl.navy.mil
NR 0
TC 0
Z9 0
U1 1
U2 2
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD MAR 22
PY 2009
VL 237
MA 220-COMP
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA V16GJ
UT WOS:000207857803544
ER
PT J
AU Rolison, DR
Long, JW
Lytle, JC
Bourg, ME
Dysart, JL
Pettigrew, KA
AF Rolison, Debra R.
Long, Jeffrey W.
Lytle, Justin C.
Bourg, Megan E.
Dysart, Jennifer L.
Pettigrew, Katherine A.
TI Improving centuries-old electrical energy storage devices by rethinking
multifunction on the nanoscale and in 3-D
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
C1 [Rolison, Debra R.; Long, Jeffrey W.; Lytle, Justin C.; Bourg, Megan E.; Dysart, Jennifer L.; Pettigrew, Katherine A.] USN, Surface Chem Branch, Res Lab, Washington, DC 20375 USA.
EM rolison@nrl.navy.mil; jeffrey.long@nrl.navy.mil
NR 0
TC 0
Z9 0
U1 0
U2 0
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD MAR 22
PY 2009
VL 237
MA 124-IEC
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA V16GJ
UT WOS:000207857802800
ER
PT J
AU Sims, JL
Waddle, AN
Prak, DJL
AF Sims, Jessica L.
Waddle, Ashley N.
Prak, Dianne J. Luning
TI Influence of mixture composition on the solubilization of nitroaromatic
compounds in micellar solutions of Brij-58
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
C1 [Sims, Jessica L.; Waddle, Ashley N.; Prak, Dianne J. Luning] USN Acad, Dept Chem, Annapolis, MD 21402 USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD MAR 22
PY 2009
VL 237
MA 529-CHED
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA V16GJ
UT WOS:000207857801174
ER
PT J
AU Waddle, AN
Sims, JL
Prak, DJL
AF Waddle, Ashley N.
Sims, Jessica L.
Prak, Dianne J. Luning
TI Multicomponent solubilization of nitroaromatic compounds in nonionic
surfactant solutions
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
C1 [Waddle, Ashley N.; Sims, Jessica L.; Prak, Dianne J. Luning] USN Acad, Dept Chem, Annapolis, MD 21402 USA.
NR 0
TC 0
Z9 0
U1 1
U2 1
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD MAR 22
PY 2009
VL 237
MA 539-CHED
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA V16GJ
UT WOS:000207857801175
ER
PT J
AU Wright, AJ
Fitzgerald, JP
AF Wright, Andrew J.
Fitzgerald, Jeffrey P.
TI Superstructured metallotetraazaporphyrins as O-2 activation catalysts
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
C1 [Wright, Andrew J.; Fitzgerald, Jeffrey P.] USN Acad, Dept Chem, Annapolis, MD 21412 USA.
EM m097206@usna.edu; fitzgera@usna.edu
NR 0
TC 0
Z9 0
U1 0
U2 0
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD MAR 22
PY 2009
VL 237
MA 616-CHED
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA V16GJ
UT WOS:000207857801274
ER
PT J
AU Wright, ME
Abernethy, ET
Cash, J
Guenthner, AJ
Yandek, G
AF Wright, Michael E.
Abernethy, Eric T.
Cash, Jessica
Guenthner, Andrew J.
Yandek, Gregory
TI Synthesis of new phenyl-ethynyl end-capped poly-p-phenylene
high-performance composite resins
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
C1 [Wright, Michael E.; Abernethy, Eric T.; Cash, Jessica; Guenthner, Andrew J.] USN, Div Chem, NAVAIR, China Lake, CA 93555 USA.
[Yandek, Gregory] AFRL, RZSM, Edwards AFB, CA 93524 USA.
EM michael.wright@ATK.com
NR 0
TC 0
Z9 0
U1 1
U2 1
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD MAR 22
PY 2009
VL 237
MA 115-POLY
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA V16GJ
UT WOS:000207857807477
ER
PT J
AU Wynne, JH
Harney, MB
Buckley, JP
Cooper, VK
Rasley, BT
AF Wynne, James H.
Harney, Matthew B.
Buckley, Joseph P.
Cooper, Vivian K.
Rasley, Brian T.
TI Functional coatings utilizing surface-active additives to degrade
pesticides and chemical simulants
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
C1 [Wynne, James H.; Harney, Matthew B.; Buckley, Joseph P.; Cooper, Vivian K.] USN, Res Lab, Div Chem, Washington, DC 20375 USA.
[Rasley, Brian T.] Univ Alaska Fairbanks, Dept Chem & Biochem, Fairbanks, AK 99775 USA.
NR 0
TC 0
Z9 0
U1 0
U2 1
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD MAR 22
PY 2009
VL 237
MA 299-PMSE
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA V16GJ
UT WOS:000207857807056
ER
PT J
AU Dacol, DK
Orris, GJ
AF Dacol, Dalcio K.
Orris, Gregory J.
TI Wave number of the coherent acoustic field in a medium with randomly
distributed spheres
SO JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL
LA English
DT Article
ID MULTIPLE-SCATTERING
AB This paper presents an iterative method for numerically solving the secular equation obtained by Fikioris and Waterman for the effective wave number of the coherent acoustic field propagating in a medium with a random distribution of identical spherical scatterers. The method works both for the original equation derived by Fikioris and Waterman and for its generalization to the case of an arbitrary two-point correlation function in the positions of any two scatterers. An explicit solution up to second order in the density of scatterers is also obtained. In the point scatterer limit this solution is identical to that obtained by Lloyd and Berry which is considered to be the correct result for the effective wave number to second order in the density of scatterers in the point scatterer limit.
C1 [Dacol, Dalcio K.; Orris, Gregory J.] USN, Res Lab, Acoust Div, Washington, DC 20375 USA.
RP Dacol, DK (reprint author), USN, Res Lab, Acoust Div, Washington, DC 20375 USA.
EM dalcio.dacol@nrl.navy.mil
FU Office of Naval Research
FX The Office of Naval Research supported this work at the Naval Research
Laboratory.
NR 10
TC 2
Z9 2
U1 1
U2 1
PU IOP PUBLISHING LTD
PI BRISTOL
PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND
SN 1751-8113
J9 J PHYS A-MATH THEOR
JI J. Phys. A-Math. Theor.
PD MAR 22
PY 2009
VL 42
IS 20
AR 205001
DI 10.1088/1751-8113/42/20/205001
PG 7
WC Physics, Multidisciplinary; Physics, Mathematical
SC Physics
GA 442BR
UT WOS:000265815300003
ER
PT J
AU Gray, MD
Wittkowski, M
Scholz, M
Humphreys, EML
Ohnaka, K
Boboltz, D
AF Gray, M. D.
Wittkowski, M.
Scholz, M.
Humphreys, E. M. L.
Ohnaka, K.
Boboltz, D.
TI SiO maser emission in Miras
SO MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
LA English
DT Article
DE masers; stars: AGB and post-AGB; circumstellar matter; stars: evolution;
radio lines: stars
ID VARIABLE S-ORIONIS; VLBA OBSERVATIONS; RADIO PHOTOSPHERES; H+SIO
COLLISIONS; MOLECULAR LAYER; CROSS-SECTIONS; DUST SHELL; AGB STARS;
R-AQUARII; 4 EPOCHS
AB We describe a combined dynamic atmosphere and maser propagation model of SiO maser emission in Mira variables. This model rectifies many of the defects of an earlier model of this type, particularly in relation to the infrared (IR) radiation field generated by dust and various wavelength-dependent, optically thick layers. Modelled masers form in rings with radii consistent with those found in very long baseline interferometry (VLBI) observations and with earlier models. This agreement requires the adoption of a radio photosphere of radius approximately twice that of the stellar photosphere, in agreement with observations. A radio photosphere of this size renders invisible certain maser sites with high amplification at low radii, and conceals high-velocity shocks, which are absent in radio continuum observations. The SiO masers are brightest at an optical phase of 0.1-0.25, which is consistent with observed phase lags. Dust can have both mild and profound effects on the maser emission. Maser rings, a shock and the optically thick layer in the SiO pumping band at 8.13 mu m appear to be closely associated in three out of four phase samples.
C1 [Gray, M. D.] Univ Manchester, Jodrell Bank Ctr Astrophys, Manchester M13 9PL, Lancs, England.
[Wittkowski, M.] ESO, D-85748 Garching, Germany.
[Scholz, M.] Heidelberg Univ, Inst Theoret Astrophys, Zentrum Astron ZAH, D-69120 Heidelberg, Germany.
[Scholz, M.] Univ Sydney, Sch Phys, Sydney Inst Astron, Sydney, NSW 2006, Australia.
[Humphreys, E. M. L.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA.
[Ohnaka, K.] Max Planck Inst Radioastron, D-53121 Bonn, Germany.
[Boboltz, D.] USN Observ, Washington, DC 20392 USA.
RP Gray, MD (reprint author), Univ Manchester, Jodrell Bank Ctr Astrophys, Alan Turing Bldg, Manchester M13 9PL, Lancs, England.
EM mgray@aoc.nrao.edu
OI Wittkowski, Markus/0000-0002-7952-9550
FU STFC (formerly PPARC) [PP/C000250/1]; UK STFC
FX MDG acknowledges STFC (formerly PPARC) for financial support under the
2005-2010 rolling grant, number PP/C000250/1. Computations were carried
out at the HiPerSPACE Computing Centre, UCL, which is funded by the UK
STFC. The authors would like to thank Lee Anne Willson for detailed
comments on the manuscript.
NR 61
TC 29
Z9 29
U1 0
U2 2
PU OXFORD UNIV PRESS
PI OXFORD
PA GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND
SN 0035-8711
EI 1365-2966
J9 MON NOT R ASTRON SOC
JI Mon. Not. Roy. Astron. Soc.
PD MAR 21
PY 2009
VL 394
IS 1
BP 51
EP 66
DI 10.1111/j.1365-2966.2008.14237.x
PG 16
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 415WR
UT WOS:000263967700005
ER
PT J
AU Kanekar, N
Lane, WM
Momjian, E
Briggs, FH
Chengalur, JN
AF Kanekar, N.
Lane, W. M.
Momjian, E.
Briggs, F. H.
Chengalur, J. N.
TI The covering factor of high-redshift damped Lyman-alpha systems
SO MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
LA English
DT Article
DE galaxies: ISM; quasars: individual: images
ID 21 CENTIMETER ABSORPTION; 21-CM ABSORPTION; VLBI OBSERVATIONS;
RADIO-SOURCES; PKS 0201+113; SKY SURVEY; H I; ABSORBER; CM; GALAXY
AB We have used the Very Long Baseline Array to image 18 quasars with foreground damped Lyman-alpha systems (DLAs) at 327, 610 or 1420 MHz, to measure the covering factor f of each DLA at or near its redshifted H I 21 cm line frequency. Including six systems from the literature, we find that none of 24 DLAs at 0.09 < z < 3.45 has an exceptionally low covering factor, with f similar to 0.45-1 for the 14 DLAs at z > 1.5 and f similar to 0.41-1 for the 10 systems at z < 1, and consistent covering factor distributions in the two subsamples. The observed paucity of detections of HI 21 cm absorption in high-z DLAs thus cannot be explained by low covering factors and is instead likely to arise due to a larger fraction of warm HI in these absorbers.
C1 [Kanekar, N.; Momjian, E.] Natl Radio Astron Observ, Socorro, NM 87801 USA.
[Lane, W. M.] USN, Res Lab, Washington, DC 20375 USA.
[Briggs, F. H.] Australian Natl Univ, Weston, ACT 2611, Australia.
[Chengalur, J. N.] Natl Ctr Radio Astrophys, Pune 411007, Maharashtra, India.
RP Kanekar, N (reprint author), Natl Radio Astron Observ, 1003 Lopezville Rd, Socorro, NM 87801 USA.
EM nkanekar@aoc.nrao.edu
FU National Science Foundation; Max Planck Foundation; NRAO; Office of
Naval Research
FX NRAO is operated by Associated Universities, Inc. under cooperative
agreement with the National Science Foundation. NK acknowledges support
from the Max Planck Foundation and an NRAO Jansky Fellowship, and thanks
Craig Walker for discussions on the VLBA analysis. Basic research in
astronomy at the Naval Research Laboratory is supported by the Office of
Naval Research.
NR 32
TC 27
Z9 27
U1 0
U2 1
PU WILEY-BLACKWELL PUBLISHING, INC
PI MALDEN
PA COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA
SN 0035-8711
J9 MON NOT R ASTRON SOC
JI Mon. Not. Roy. Astron. Soc.
PD MAR 21
PY 2009
VL 394
IS 1
BP L61
EP L65
DI 10.1111/j.1745-3933.2008.00610.x
PG 5
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 594ZT
UT WOS:000277581200013
ER
PT J
AU Bryans, P
Kreckel, H
Roueff, E
Wakelam, V
Savin, DW
AF Bryans, P.
Kreckel, H.
Roueff, E.
Wakelam, V.
Savin, D. W.
TI MOLECULAR CLOUD CHEMISTRY AND THE IMPORTANCE OF DIELECTRONIC
RECOMBINATION
SO ASTROPHYSICAL JOURNAL
LA English
DT Article
DE astrochemistry; atomic data; atomic processes; dust, extinction; ISM:
atoms; ISM: molecules
ID ASTROPHYSICALLY ABUNDANT ELEMENTS; PHOTOIONIZATION CROSS-SECTIONS;
FINITE-DENSITY PLASMAS; LOW-TEMPERATURES; RATE COEFFICIENTS; IONIZATION
FRACTIONS; IONS; UNCERTAINTIES; REGIONS; MODELS
AB Dielectronic recombination (DR) of singly charged ions is a reaction pathway that is commonly neglected in chemical models of molecular clouds. In this study we include state-of-the-art DR data for He(+), C(+), N(+), O(+), Na(+), and Mg(+) in chemical models used to simulate dense molecular clouds, protostars, and diffuse molecular clouds. We also update the radiative recombination (RR) rate coefficients for H(+), He(+), C(+), N(+), O(+), Na(+), and Mg(+) to the current state-of-the-art values. The new RR data have little effect on the models. However, the inclusion of DR results in significant differences in gas-grain models of dense, cold molecular clouds for the evolution of a number of surface and gas-phase species. We find differences of a factor of 2 in the abundance for 74 of the 655 species at times of 10(4)-10(6) yr in this model when we include DR. Of these 74 species, 16 have at least a factor of 10 difference in abundance. We find the largest differences for species formed on the surface of dust grains. These differences are due primarily to the addition of C(+) DR, which increases the neutral C abundance, thereby enhancing the accretion of C onto dust. These results may be important for the warm-up phase of molecular clouds when surface species are desorbed into the gas phase. We also note that no reliable state-of-the-art RR or DR data exist for Si(+), P(+), S(+), Cl(+), and Fe(+). Modern calculations for these ions are needed to better constrain molecular cloud models.
C1 [Bryans, P.; Kreckel, H.; Savin, D. W.] Columbia Univ, Columbia Astrophys Lab, New York, NY 10027 USA.
[Roueff, E.] Observ Paris, LUTH, F-75014 Paris, France.
[Roueff, E.] Observ Paris, CNRS, UMR 8102, F-75014 Paris, France.
[Wakelam, V.] Univ Bordeaux, Lab Astrophys Bordeaux, CNRS, INSU,UMR 5804, F-33271 Floirac, France.
RP Bryans, P (reprint author), USN, Res Lab, Div Space Sci, 4555 Overlook Ave SW,Code 7670, Washington, DC 20375 USA.
RI Kreckel, Holger/F-4969-2010; Savin, Daniel/B-9576-2012; Bryans,
Paul/C-9196-2012;
OI Savin, Daniel/0000-0002-1111-6610; Wakelam,
Valentine/0000-0001-9676-2605
FU NASA; NSF; French national program Physique et Chemie du Milieu
Interstellaire (PCMI)
FX P. B., H. K., and D. W. S. were supported in part by the NASA Astronomy
and Physics Research and Analysis Program and the NSF Astronomy and
Astrophysics Grants Program. E. R. and V. W. were supported in part by
the French national program Physique et Chemie du Milieu Interstellaire
(PCMI).
NR 32
TC 9
Z9 9
U1 3
U2 7
PU IOP PUBLISHING LTD
PI BRISTOL
PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND
SN 0004-637X
J9 ASTROPHYS J
JI Astrophys. J.
PD MAR 20
PY 2009
VL 694
IS 1
BP 286
EP 293
DI 10.1088/0004-637X/694/1/286
PG 8
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 420LQ
UT WOS:000264291700027
ER
PT J
AU Wang, YM
Sheeley, NR
AF Wang, Y. -M.
Sheeley, N. R., Jr.
TI UNDERSTANDING THE GEOMAGNETIC PRECURSOR OF THE SOLAR CYCLE
SO ASTROPHYSICAL JOURNAL LETTERS
LA English
DT Article
DE solar-terrestrial relations; solar wind; Sun: activity; Sun: magnetic
fields; sunspots
ID INTERPLANETARY MAGNETIC-FIELD; FLUX-TRANSPORT; WIND; DYNAMO; PREDICTION;
AMPLITUDE; ULYSSES; MAXIMUM; INDEX
AB Geomagnetic activity late in the sunspot cycle has been used successfully to forecast the amplitude of the following cycle. This success is somewhat surprising, however, because the recurrent high-speed wind streams that trigger the activity are not proxies of the Sun's polar fields, whose strength is a critical factor in many solar dynamo models. Instead, recurrent geomagnetic activity signals increases in the Sun's equatorial dipole moment, which decays on the similar to 1-2 yr timescale of the surface meridional flow and does not survive into the next cycle. In accordance with the original empirical method of Ohl, we therefore argue that solar cycle predictions should be based on the minimum level of geomagnetic activity, which is determined by the Sun's axial dipole strength, not on the peak activity during the declining phase of the cycle. On physical grounds, we suggest that an even better indicator would be the total open flux ( or strength of the radial interplanetary field component) at sunspot minimum, which in turn can be derived from the historical aa index by removing the contribution of the solar wind speed. This predictor yields a peak yearly sunspot number R(max) = 97 +/- 25 for solar cycle 24.
C1 [Wang, Y. -M.; Sheeley, N. R., Jr.] USN, Res Lab, Div Space Sci, Washington, DC 20375 USA.
RP Wang, YM (reprint author), USN, Res Lab, Div Space Sci, Washington, DC 20375 USA.
EM yi.wang@nrl.navy.mil; neil.sheeley@nrl.navy.mil
FU NASA; Office of Naval Research
FX We are indebted to L. Svalgaard for helpful comments and for sending us
his recalibrated aa values, to A. P. Rouillard and M. Lockwood for
providing their open-flux time series derived from the aa and IDV
indices, and to R. K. Ulrich (MWO) and J. T. Hoeksema (WSO) for making
available the photospheric field data used in Figures 3 and 4. This work
was supported by NASA and the Office of Naval Research.
NR 39
TC 43
Z9 43
U1 0
U2 2
PU IOP PUBLISHING LTD
PI BRISTOL
PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND
J9 ASTROPHYS J LETT
JI Astrophys. J. Lett.
PD MAR 20
PY 2009
VL 694
IS 1
BP L11
EP L15
DI 10.1088/0004-637X/694/1/L11
PG 5
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 419CK
UT WOS:000264196500003
ER
PT J
AU Abelev, BI
Aggarwal, MM
Ahammed, Z
Anderson, BD
Arkhipkin, D
Averichev, GS
Bai, Y
Balewski, J
Barannikova, O
Barnby, LS
Baudot, J
Baumgart, S
Beavis, DR
Bellwied, R
Benedosso, F
Betancourt, MJ
Betts, RR
Bhardwaj, S
Bhasin, A
Bhati, AK
Bichsel, H
Bielcik, J
Bielcikova, J
Biritz, B
Bland, LC
Bombara, M
Bonner, BE
Botje, M
Bouchet, J
Braidot, E
Brandin, AV
Bruna, E
Bueltmann, S
Burton, TP
Bystersky, M
Cai, XZ
Caines, H
Sanchez, MCD
Callner, J
Catu, O
Cebra, D
Cendejas, R
Cervantes, MC
Chajecki, Z
Chaloupka, P
Chattopadhyay, S
Chen, HF
Chen, JH
Chen, JY
Cheng, J
Cherney, M
Chikanian, A
Choi, KE
Christie, W
Chung, SU
Clarke, RF
Codrington, MJM
Coffin, JP
Corliss, R
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Cosentino, MR
Cramer, JG
Crawford, HJ
Das, D
Dash, S
Daugherity, M
De Silva, C
Dedovich, TG
DePhillips, M
Derevschikov, AA
de Souza, RD
Didenko, L
Djawotho, P
Dogra, SM
Dong, X
Drachenberg, JL
Draper, JE
Du, F
Dunlop, JC
Mazumdar, MRD
Edwards, WR
Efimov, LG
Elhalhuli, E
Elnimr, M
Emelianov, V
Engelage, J
Eppley, G
Erazmus, B
Estienne, M
Eun, L
Fachini, P
Fatemi, R
Fedorisin, J
Feng, A
Filip, P
Finch, E
Fine, V
Fisyak, Y
Gagliardi, CA
Gaillard, L
Gangadharan, DR
Ganti, MS
Garcia-Solis, E
Ghazikhanian, V
Ghosh, P
Gorbunov, YN
Gordon, A
Grebenyuk, O
Grosnick, D
Grube, B
Guertin, SM
Guimaraes, KSFF
Gupta, A
Gupta, N
Guryn, W
Haag, B
Hallman, TJ
Hamed, A
Harris, JW
He, W
Heinz, M
Heppelmann, S
Hippolyte, B
Hirsch, A
Hjort, E
Hoffman, AM
Hoffmann, GW
Hofman, DJ
Hollis, RS
Huang, HZ
Humanic, TJ
Igo, G
Iordanova, A
Jacobs, P
Jacobs, WW
Jakl, P
Jin, F
Jones, CL
Jones, PG
Joseph, J
Judd, EG
Kabana, S
Kajimoto, K
Kang, K
Kapitan, J
Kaplan, M
Keane, D
Kechechyan, A
Kettler, D
Khodyrev, VY
Kikola, DP
Kiryluk, J
Kisiel, A
Klein, SR
Knospe, AG
Kocoloski, A
Koetke, DD
Kopytine, M
Kotchenda, L
Kouchpil, V
Kravtsov, P
Kravtsov, VI
Krueger, K
Krus, M
Kuhn, C
Kumar, L
Kurnadi, P
Lamont, MAC
Landgraf, JM
LaPointe, S
Lauret, J
Lebedev, A
Lednicky, R
Lee, CH
Leight, W
LeVine, MJ
Li, C
Li, N
Li, Y
Lin, G
Lindenbaum, SJ
Lisa, MA
Liu, F
Liu, H
Liu, J
Liu, L
Ljubicic, T
Llope, WJ
Longacre, RS
Love, WA
Lu, Y
Ludlam, T
Lynn, D
Ma, GL
Ma, YG
Mahapatra, DP
Majka, R
Mall, OI
Mangotra, LK
Manweiler, R
Margetis, S
Markert, C
Matis, HS
Matulenko, YA
McShane, TS
Meschanin, A
Milner, R
Minaev, NG
Mioduszewski, S
Mischke, A
Mitchell, J
Mohanty, B
Morozov, DA
Munhoz, MG
Nandi, BK
Nattrass, C
Nayak, TK
Nelson, JM
Nepali, C
Netrakanti, PK
Ng, MJ
Nogach, LV
Nurushev, SB
Odyniec, G
Ogawa, A
Okada, H
Okorokov, V
Olson, D
Pachr, M
Page, BS
Pal, SK
Pandit, Y
Panebratsev, Y
Pawlak, T
Peitzmann, T
Perevoztchikov, V
Perkins, C
Peryt, W
Phatak, SC
Planinic, M
Pluta, J
Poljak, N
Poskanzer, AM
Potukuchi, BVKS
Prindle, D
Pruneau, C
Pruthi, NK
Putschke, J
Raniwala, R
Raniwala, S
Ray, RL
Redwine, R
Reed, R
Ridiger, A
Ritter, HG
Roberts, JB
Rogachevskiy, OV
Romero, JL
Rose, A
Roy, C
Ruan, L
Russcher, MJ
Rykov, V
Sahoo, R
Sakrejda, I
Sakuma, T
Salur, S
Sandweiss, J
Sarsour, M
Schambach, J
Scharenberg, RP
Schmitz, N
Seger, J
Selyuzhenkov, I
Seyboth, P
Shabetai, A
Shahaliev, E
Shao, M
Sharma, M
Shi, SS
Shi, XH
Sichtermann, EP
Simon, F
Singaraju, RN
Skoby, MJ
Smirnov, N
Snellings, R
Sorensen, P
Sowinski, J
Spinka, HM
Srivastava, B
Stadnik, A
Stanislaus, TDS
Staszak, D
Strikhanov, M
Stringfellow, B
Suaide, AAP
Suarez, MC
Subba, NL
Sumbera, M
Sun, XM
Sun, Y
Sun, Z
Surrow, B
Symons, TJM
de Toledo, AS
Takahashi, J
Tang, AH
Tang, Z
Tarnowsky, T
Thein, D
Thomas, JH
Tian, J
Timmins, AR
Timoshenko, S
Tlusty, D
Tokarev, M
Trainor, TA
Tram, VN
Trattner, AL
Trentalange, S
Tribble, RE
Tsai, OD
Ulery, J
Ullrich, T
Underwood, DG
Van Buren, G
van Leeuwen, M
Vander Molen, AM
Vanfossen, JA
Varma, R
Vasconcelos, GMS
Vasilevski, IM
Vasiliev, AN
Videbaek, F
Vigdor, SE
Viyogi, YP
Vokal, S
Voloshin, SA
Wada, M
Waggoner, WT
Walker, M
Wang, F
Wang, G
Wang, JS
Wang, Q
Wang, X
Wang, XL
Wang, Y
Webb, JC
Westfall, GD
Whitten, C
Wieman, H
Wissink, SW
Witt, R
Wu, Y
Xie, W
Xu, N
Xu, QH
Xu, Y
Xu, Z
Yepes, P
Yoo, IK
Yue, Q
Zawisza, M
Zbroszczyk, H
Zhan, W
Zhang, H
Zhang, S
Zhang, WM
Zhang, Y
Zhang, ZP
Zhao, Y
Zhong, C
Zhou, J
Zoulkarneev, R
Zoulkarneeva, Y
Zuo, JX
AF Abelev, B. I.
Aggarwal, M. M.
Ahammed, Z.
Anderson, B. D.
Arkhipkin, D.
Averichev, G. S.
Bai, Y.
Balewski, J.
Barannikova, O.
Barnby, L. S.
Baudot, J.
Baumgart, S.
Beavis, D. R.
Bellwied, R.
Benedosso, F.
Betancourt, M. J.
Betts, R. R.
Bhardwaj, S.
Bhasin, A.
Bhati, A. K.
Bichsel, H.
Bielcik, J.
Bielcikova, J.
Biritz, B.
Bland, L. C.
Bombara, M.
Bonner, B. E.
Botje, M.
Bouchet, J.
Braidot, E.
Brandin, A. V.
Bruna, E.
Bueltmann, S.
Burton, T. P.
Bystersky, M.
Cai, X. Z.
Caines, H.
Sanchez, M. Calderon de la Barca
Callner, J.
Catu, O.
Cebra, D.
Cendejas, R.
Cervantes, M. C.
Chajecki, Z.
Chaloupka, P.
Chattopadhyay, S.
Chen, H. F.
Chen, J. H.
Chen, J. Y.
Cheng, J.
Cherney, M.
Chikanian, A.
Choi, K. E.
Christie, W.
Chung, S. U.
Clarke, R. F.
Codrington, M. J. M.
Coffin, J. P.
Corliss, R.
Cormier, T. M.
Cosentino, M. R.
Cramer, J. G.
Crawford, H. J.
Das, D.
Dash, S.
Daugherity, M.
De Silva, C.
Dedovich, T. G.
DePhillips, M.
Derevschikov, A. A.
de Souza, R. Derradi
Didenko, L.
Djawotho, P.
Dogra, S. M.
Dong, X.
Drachenberg, J. L.
Draper, J. E.
Du, F.
Dunlop, J. C.
Mazumdar, M. R. Dutta
Edwards, W. R.
Efimov, L. G.
Elhalhuli, E.
Elnimr, M.
Emelianov, V.
Engelage, J.
Eppley, G.
Erazmus, B.
Estienne, M.
Eun, L.
Fachini, P.
Fatemi, R.
Fedorisin, J.
Feng, A.
Filip, P.
Finch, E.
Fine, V.
Fisyak, Y.
Gagliardi, C. A.
Gaillard, L.
Gangadharan, D. R.
Ganti, M. S.
Garcia-Solis, E.
Ghazikhanian, V.
Ghosh, P.
Gorbunov, Y. N.
Gordon, A.
Grebenyuk, O.
Grosnick, D.
Grube, B.
Guertin, S. M.
Guimaraes, K. S. F. F.
Gupta, A.
Gupta, N.
Guryn, W.
Haag, B.
Hallman, T. J.
Hamed, A.
Harris, J. W.
He, W.
Heinz, M.
Heppelmann, S.
Hippolyte, B.
Hirsch, A.
Hjort, E.
Hoffman, A. M.
Hoffmann, G. W.
Hofman, D. J.
Hollis, R. S.
Huang, H. Z.
Humanic, T. J.
Igo, G.
Iordanova, A.
Jacobs, P.
Jacobs, W. W.
Jakl, P.
Jin, F.
Jones, C. L.
Jones, P. G.
Joseph, J.
Judd, E. G.
Kabana, S.
Kajimoto, K.
Kang, K.
Kapitan, J.
Kaplan, M.
Keane, D.
Kechechyan, A.
Kettler, D.
Khodyrev, V. Yu.
Kikola, D. P.
Kiryluk, J.
Kisiel, A.
Klein, S. R.
Knospe, A. G.
Kocoloski, A.
Koetke, D. D.
Kopytine, M.
Kotchenda, L.
Kouchpil, V.
Kravtsov, P.
Kravtsov, V. I.
Krueger, K.
Krus, M.
Kuhn, C.
Kumar, L.
Kurnadi, P.
Lamont, M. A. C.
Landgraf, J. M.
LaPointe, S.
Lauret, J.
Lebedev, A.
Lednicky, R.
Lee, C-H.
Leight, W.
LeVine, M. J.
Li, C.
Li, N.
Li, Y.
Lin, G.
Lindenbaum, S. J.
Lisa, M. A.
Liu, F.
Liu, H.
Liu, J.
Liu, L.
Ljubicic, T.
Llope, W. J.
Longacre, R. S.
Love, W. A.
Lu, Y.
Ludlam, T.
Lynn, D.
Ma, G. L.
Ma, Y. G.
Mahapatra, D. P.
Majka, R.
Mall, O. I.
Mangotra, L. K.
Manweiler, R.
Margetis, S.
Markert, C.
Matis, H. S.
Matulenko, Yu. A.
McShane, T. S.
Meschanin, A.
Milner, R.
Minaev, N. G.
Mioduszewski, S.
Mischke, A.
Mitchell, J.
Mohanty, B.
Morozov, D. A.
Munhoz, M. G.
Nandi, B. K.
Nattrass, C.
Nayak, T. K.
Nelson, J. M.
Nepali, C.
Netrakanti, P. K.
Ng, M. J.
Nogach, L. V.
Nurushev, S. B.
Odyniec, G.
Ogawa, A.
Okada, H.
Okorokov, V.
Olson, D.
Pachr, M.
Page, B. S.
Pal, S. K.
Pandit, Y.
Panebratsev, Y.
Pawlak, T.
Peitzmann, T.
Perevoztchikov, V.
Perkins, C.
Peryt, W.
Phatak, S. C.
Planinic, M.
Pluta, J.
Poljak, N.
Poskanzer, A. M.
Potukuchi, B. V. K. S.
Prindle, D.
Pruneau, C.
Pruthi, N. K.
Putschke, J.
Raniwala, R.
Raniwala, S.
Ray, R. L.
Redwine, R.
Reed, R.
Ridiger, A.
Ritter, H. G.
Roberts, J. B.
Rogachevskiy, O. V.
Romero, J. L.
Rose, A.
Roy, C.
Ruan, L.
Russcher, M. J.
Rykov, V.
Sahoo, R.
Sakrejda, I.
Sakuma, T.
Salur, S.
Sandweiss, J.
Sarsour, M.
Schambach, J.
Scharenberg, R. P.
Schmitz, N.
Seger, J.
Selyuzhenkov, I.
Seyboth, P.
Shabetai, A.
Shahaliev, E.
Shao, M.
Sharma, M.
Shi, S. S.
Shi, X-H.
Sichtermann, E. P.
Simon, F.
Singaraju, R. N.
Skoby, M. J.
Smirnov, N.
Snellings, R.
Sorensen, P.
Sowinski, J.
Spinka, H. M.
Srivastava, B.
Stadnik, A.
Stanislaus, T. D. S.
Staszak, D.
Strikhanov, M.
Stringfellow, B.
Suaide, A. A. P.
Suarez, M. C.
Subba, N. L.
Sumbera, M.
Sun, X. M.
Sun, Y.
Sun, Z.
Surrow, B.
Symons, T. J. M.
de Toledo, A. Szanto
Takahashi, J.
Tang, A. H.
Tang, Z.
Tarnowsky, T.
Thein, D.
Thomas, J. H.
Tian, J.
Timmins, A. R.
Timoshenko, S.
Tlusty, D.
Tokarev, M.
Trainor, T. A.
Tram, V. N.
Trattner, A. L.
Trentalange, S.
Tribble, R. E.
Tsai, O. D.
Ulery, J.
Ullrich, T.
Underwood, D. G.
Van Buren, G.
van Leeuwen, M.
Vander Molen, A. M.
Vanfossen, J. A., Jr.
Varma, R.
Vasconcelos, G. M. S.
Vasilevski, I. M.
Vasiliev, A. N.
Videbaek, F.
Vigdor, S. E.
Viyogi, Y. P.
Vokal, S.
Voloshin, S. A.
Wada, M.
Waggoner, W. T.
Walker, M.
Wang, F.
Wang, G.
Wang, J. S.
Wang, Q.
Wang, X.
Wang, X. L.
Wang, Y.
Webb, J. C.
Westfall, G. D.
Whitten, C., Jr.
Wieman, H.
Wissink, S. W.
Witt, R.
Wu, Y.
Xie, W.
Xu, N.
Xu, Q. H.
Xu, Y.
Xu, Z.
Yepes, P.
Yoo, I-K.
Yue, Q.
Zawisza, M.
Zbroszczyk, H.
Zhan, W.
Zhang, H.
Zhang, S.
Zhang, W. M.
Zhang, Y.
Zhang, Z. P.
Zhao, Y.
Zhong, C.
Zhou, J.
Zoulkarneev, R.
Zoulkarneeva, Y.
Zuo, J. X.
TI Observation of Two-Source Interference in the Photoproduction Reaction
AuAu -> AuAu rho(0)
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID HEAVY-ION COLLISIONS; TIME PROJECTION CHAMBER; COLLIDERS; PHYSICS;
PHOTON
AB In ultraperipheral relativistic heavy-ion collisions, a photon from the electromagnetic field of one nucleus can fluctuate to a quark-antiquark pair and scatter from the other nucleus, emerging as a rho(0). The rho(0) production occurs in two well-separated (median impact parameters of 20 and 40 F for the cases considered here) nuclei, so the system forms a two-source interferometer. At low transverse momenta, the two amplitudes interfere destructively, suppressing rho(0) production. Since the rho(0) decays before the production amplitudes from the two sources can overlap, the two-pion system can only be described with an entangled nonlocal wave function, and is thus an example of the Einstein-Podolsky-Rosen paradox. We observe this suppression in 200 GeV per nucleon-pair gold-gold collisions. The interference is 87%+/- 5%(stat.)+/- 8%(syst.) of the expected level. This translates into a limit on decoherence due to wave function collapse or other factors of 23% at the 90% confidence level.
C1 [Bhasin, A.; Krueger, K.; Spinka, H. M.; Underwood, D. G.] Argonne Natl Lab, Argonne, IL 60439 USA.
[Barnby, L. S.; Bombara, M.; Burton, T. P.; Elhalhuli, E.; Gaillard, L.; Jones, P. G.; Nelson, J. M.; Timmins, A. R.] Univ Birmingham, Birmingham, W Midlands, England.
[Beavis, D. R.; Bland, L. C.; Christie, W.; Chung, S. U.; DePhillips, M.; Didenko, L.; Fachini, P.; Fine, V.; Fisyak, Y.; Gordon, A.; Guryn, W.; Hallman, T. J.; Lamont, M. A. C.; Landgraf, J. M.; Lebedev, A.; LeVine, M. J.; Ljubicic, T.; Longacre, R. S.; Love, W. A.; Ludlam, T.; Lynn, D.; Ogawa, A.; Okada, H.; Perevoztchikov, V.; Ruan, L.; Sorensen, P.; Tang, A. H.; Ullrich, T.; Van Buren, G.; Videbaek, F.; Xu, Z.; Zhang, H.] Brookhaven Natl Lab, Upton, NY 11973 USA.
[Crawford, H. J.; Engelage, J.; Judd, E. G.; Ng, M. J.; Perkins, C.; Trattner, A. L.] Univ Calif Berkeley, Berkeley, CA 94720 USA.
[Sanchez, M. Calderon de la Barca; Cebra, D.; Das, D.; Draper, J. E.; Haag, B.; Liu, H.; Mall, O. I.; Reed, R.; Romero, J. L.] Univ Calif Davis, Davis, CA 95616 USA.
[Biritz, B.; Cendejas, R.; Gangadharan, D. R.; Ghazikhanian, V.; Guertin, S. M.; Huang, H. Z.; Igo, G.; Kurnadi, P.; Staszak, D.; Trentalange, S.; Tsai, O. D.; Wang, G.; Whitten, C., Jr.] Univ Calif Los Angeles, Los Angeles, CA 90095 USA.
[de Souza, R. Derradi; Takahashi, J.; Vasconcelos, G. M. S.] Univ Estadual Campinas, Sao Paulo, Brazil.
[Kaplan, M.] Carnegie Mellon Univ, Pittsburgh, PA 15213 USA.
[Abelev, B. I.; Barannikova, O.; Betts, R. R.; Garcia-Solis, E.; Hofman, D. J.; Hollis, R. S.; Suarez, M. C.] Univ Illinois, Chicago, IL 60607 USA.
[Cherney, M.; Gorbunov, Y. N.; McShane, T. S.; Seger, J.; Waggoner, W. T.] Creighton Univ, Omaha, NE 68178 USA.
[Bielcik, J.; Bielcikova, J.; Bystersky, M.; Chaloupka, P.; Jakl, P.; Kapitan, J.; Kouchpil, V.; Krus, M.; Pachr, M.; Sumbera, M.; Tlusty, D.] AS CR, Inst Phys Nucl, Rez 25068, Czech Republic.
[Averichev, G. S.; Dedovich, T. G.; Efimov, L. G.; Fedorisin, J.; Kechechyan, A.; Panebratsev, Y.; Rogachevskiy, O. V.; Shahaliev, E.; Stadnik, A.; Tokarev, M.; Vokal, S.] JINR, Lab High Energy, Dubna, Russia.
[Arkhipkin, D.; Filip, P.; Lednicky, R.; Vasilevski, I. M.; Wissink, S. W.; Zoulkarneev, R.; Zoulkarneeva, Y.] JINR, Particle Phys Lab, Dubna, Russia.
[Dash, S.; Mahapatra, D. P.; Phatak, S. C.; Viyogi, Y. P.] Inst Phys, Bhubaneswar 751005, Orissa, India.
[Nandi, B. K.; Varma, R.] Indian Inst Technol, Bombay, Maharashtra, India.
[He, W.; Jacobs, W. W.; Page, B. S.; Selyuzhenkov, I.; Sowinski, J.; Vigdor, S. E.] Indiana Univ, Bloomington, IN 47408 USA.
[Baudot, J.; Coffin, J. P.; Estienne, M.; Hippolyte, B.; Kuhn, C.; Shabetai, A.] Inst Rech Subatom, Strasbourg, France.
[Bhasin, A.; Dogra, S. M.; Gupta, A.; Gupta, N.; Mangotra, L. K.; Potukuchi, B. V. K. S.] Univ Jammu, Jammu 180001, India.
[Anderson, B. D.; Bouchet, J.; Joseph, J.; Keane, D.; Kopytine, M.; Margetis, S.; Nepali, C.; Pandit, Y.; Rykov, V.; Subba, N. L.; Vanfossen, J. A., Jr.; Zhang, W. M.] Kent State Univ, Kent, OH 44242 USA.
[Bhasin, A.; Fatemi, R.] Univ Kentucky, Lexington, KY 40506 USA.
[Sun, Z.; Wang, J. S.; Zhan, W.] Inst Modern Phys, Lanzhou, Peoples R China.
[Dong, X.; Edwards, W. R.; Grebenyuk, O.; Hjort, E.; Jacobs, P.; Kikola, D. P.; Kiryluk, J.; Klein, S. R.; Matis, H. S.; Odyniec, G.; Olson, D.; Poskanzer, A. M.; Ritter, H. G.; Rose, A.; Sakrejda, I.; Salur, S.; Sichtermann, E. P.; Sun, X. M.; Symons, T. J. M.; Thomas, J. H.; Tram, V. N.; Wieman, H.; Xu, N.; Xu, Q. H.] Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
[Balewski, J.; Betancourt, M. J.; Corliss, R.; Hoffman, A. M.; Jones, C. L.; Kocoloski, A.; Leight, W.; Milner, R.; Redwine, R.; Sakuma, T.; Surrow, B.; Walker, M.] MIT, Cambridge, MA 02139 USA.
[Schmitz, N.; Seyboth, P.; Simon, F.] Max Planck Inst Phys & Astrophys, D-80805 Munich, Germany.
[Vander Molen, A. M.; Westfall, G. D.] Michigan State Univ, E Lansing, MI 48824 USA.
[Brandin, A. V.; Emelianov, V.; Kotchenda, L.; Kravtsov, P.; Okorokov, V.; Ridiger, A.; Strikhanov, M.; Timoshenko, S.] Moscow Engn Phys Inst, Moscow 115409, Russia.
[Lindenbaum, S. J.] CUNY City Coll, New York, NY 10031 USA.
[Bai, Y.; Benedosso, F.; Botje, M.; Braidot, E.; Mischke, A.; Peitzmann, T.; Russcher, M. J.; Snellings, R.; van Leeuwen, M.] NIKHEF, Amsterdam, Netherlands.
[Bai, Y.; Benedosso, F.; Botje, M.; Braidot, E.; Mischke, A.; Peitzmann, T.; Russcher, M. J.; Snellings, R.; van Leeuwen, M.] Univ Utrecht, Amsterdam, Netherlands.
[Chajecki, Z.; Humanic, T. J.; Kisiel, A.; Lisa, M. A.] Ohio State Univ, Columbus, OH 43210 USA.
[Bueltmann, S.] Old Dominion Univ, Norfolk, VA 23529 USA.
[Aggarwal, M. M.; Bhati, A. K.; Kumar, L.; Pruthi, N. K.] Panjab Univ, Chandigarh 160014, India.
[Eun, L.; Heppelmann, S.] Penn State Univ, University Pk, PA 16802 USA.
[Derevschikov, A. A.; Khodyrev, V. Yu.; Kravtsov, P.; Matulenko, Yu. A.; Meschanin, A.; Minaev, N. G.; Morozov, D. A.; Nogach, L. V.; Nurushev, S. B.; Vasiliev, A. N.] Inst High Energy Phys, Protvino, Russia.
[Hirsch, A.; Netrakanti, P. K.; Scharenberg, R. P.; Skoby, M. J.; Srivastava, B.; Stringfellow, B.; Tarnowsky, T.; Ulery, J.; Wang, F.; Wang, Q.; Xie, W.] Purdue Univ, W Lafayette, IN 47907 USA.
[Choi, K. E.; Grube, B.; Lee, C-H.; Yoo, I-K.] Pusan Natl Univ, Pusan 609735, South Korea.
[Bhardwaj, S.; Raniwala, R.; Raniwala, S.] Univ Rajasthan, Jaipur 302004, Rajasthan, India.
[Bonner, B. E.; Eppley, G.; Liu, J.; Llope, W. J.; Mitchell, J.; Roberts, J. B.; Yepes, P.; Zhou, J.] Rice Univ, Houston, TX 77251 USA.
[Cosentino, M. R.; Guimaraes, K. S. F. F.; Li, C.; Munhoz, M. G.; Suaide, A. A. P.; de Toledo, A. Szanto] Univ Sao Paulo, Sao Paulo, Brazil.
[Chen, H. F.; Lu, Y.; Shao, M.; Sun, Y.; Tang, Z.; Wang, X. L.; Xu, Y.; Zhang, Y.; Zhang, Z. P.; Zhao, Y.] Univ Sci & Technol China, Hefei 230026, Peoples R China.
[Cai, X. Z.; Chen, J. H.; Jin, F.; Ma, G. L.; Ma, Y. G.; Shi, X-H.; Tian, J.; Zhang, S.; Zhong, C.; Zuo, J. X.] Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China.
[Erazmus, B.; Kabana, S.; Roy, C.; Sahoo, R.] SUBATECH, Nantes, France.
[Cervantes, M. C.; Clarke, R. F.; Codrington, M. J. M.; Djawotho, P.; Drachenberg, J. L.; Gagliardi, C. A.; Hamed, A.; Mioduszewski, S.; Sarsour, M.; Tribble, R. E.] Texas A&M Univ, College Stn, TX 77843 USA.
[Daugherity, M.; Hoffmann, G. W.; Kajimoto, K.; Markert, C.; Ray, R. L.; Schambach, J.; Thein, D.; Wada, M.] Univ Texas Austin, Austin, TX 78712 USA.
[Cheng, J.; Kang, K.; Li, Y.; Wang, X.; Wang, Y.; Yue, Q.] Tsinghua Univ, Beijing 100084, Peoples R China.
[Witt, R.] USN Acad, Annapolis, MD 21402 USA.
[Grosnick, D.; Koetke, D. D.; Manweiler, R.; Stanislaus, T. D. S.; Webb, J. C.] Valparaiso Univ, Valparaiso, IN 46383 USA.
[Ahammed, Z.; Chattopadhyay, S.; Mazumdar, M. R. Dutta; Ganti, M. S.; Ghosh, P.; Mohanty, B.; Nayak, T. K.; Pal, S. K.; Singaraju, R. N.] Ctr Variable Energy Cyclotron, Kolkata 700064, W Bengal, India.
[Pawlak, T.; Peryt, W.; Pluta, J.; Zawisza, M.; Zbroszczyk, H.] Warsaw Univ, Warsaw, Poland.
[Bichsel, H.; Cramer, J. G.; Kettler, D.; Prindle, D.; Trainor, T. A.] Univ Washington, Seattle, WA 98195 USA.
[Bellwied, R.; Cormier, T. M.; De Silva, C.; Elnimr, M.; LaPointe, S.; Pruneau, C.; Sharma, M.; Voloshin, S. A.] Wayne State Univ, Detroit, MI 48201 USA.
[Chen, H. F.; Feng, A.; Li, N.; Liu, L.; Shi, S. S.; Wu, Y.] HZNU, CCNU, Inst Particle Phys, Wuhan 430079, Peoples R China.
[Baumgart, S.; Bruna, E.; Caines, H.; Catu, O.; Chikanian, A.; Du, F.; Finch, E.; Harris, J. W.; Heinz, M.; Knospe, A. G.; Lin, G.; Majka, R.; Nattrass, C.; Putschke, J.; Sandweiss, J.; Smirnov, N.] Yale Univ, New Haven, CT 06520 USA.
[Planinic, M.; Poljak, N.] Univ Zagreb, HR-10002 Zagreb, Croatia.
RP Abelev, BI (reprint author), Argonne Natl Lab, 9700 S Cass Ave, Argonne, IL 60439 USA.
RI Yoo, In-Kwon/J-6222-2012; Peitzmann, Thomas/K-2206-2012; Witt,
Richard/H-3560-2012; Voloshin, Sergei/I-4122-2013; Pandit,
Yadav/I-2170-2013; Lednicky, Richard/K-4164-2013; Cosentino,
Mauro/L-2418-2014; Sumbera, Michal/O-7497-2014; Strikhanov,
Mikhail/P-7393-2014; Barnby, Lee/G-2135-2010; Mischke,
Andre/D-3614-2011; Takahashi, Jun/B-2946-2012; Planinic,
Mirko/E-8085-2012; Dogra, Sunil /B-5330-2013; Fornazier Guimaraes, Karin
Silvia/H-4587-2016; Chaloupka, Petr/E-5965-2012; Nattrass,
Christine/J-6752-2016; Derradi de Souza, Rafael/M-4791-2013; Suaide,
Alexandre/L-6239-2016; Inst. of Physics, Gleb Wataghin/A-9780-2017;
Okorokov, Vitaly/C-4800-2017; Ma, Yu-Gang/M-8122-2013;
OI Peitzmann, Thomas/0000-0002-7116-899X; Pandit,
Yadav/0000-0003-2809-7943; Cosentino, Mauro/0000-0002-7880-8611;
Sumbera, Michal/0000-0002-0639-7323; Strikhanov,
Mikhail/0000-0003-2586-0405; Barnby, Lee/0000-0001-7357-9904; Takahashi,
Jun/0000-0002-4091-1779; Fornazier Guimaraes, Karin
Silvia/0000-0003-0578-9533; Nattrass, Christine/0000-0002-8768-6468;
Derradi de Souza, Rafael/0000-0002-2084-7001; Suaide,
Alexandre/0000-0003-2847-6556; Okorokov, Vitaly/0000-0002-7162-5345; Ma,
Yu-Gang/0000-0002-0233-9900; Fisyak, Yuri/0000-0002-3151-8377; Sorensen,
Paul/0000-0001-5056-9391; Thomas, James/0000-0002-6256-4536
FU U. S. DOE Office of Science; U. S. NSF; Sloan Foundation; DFG Excellence
Cluster EXC153 of Germany; CNRS/IN2P3; RA; RPL; EMN of France; STFC;
EPSRC; FAPESP of Brazil; Russian Ministry of Science and Technology;
NNSFC; CAS; MoST; MoE of China; IRP; GA of the Czech Republic; FOM of
The Netherlands; DAE; DST; CSIR of the Government of India; Swiss NSF;
Polish State Committee for Scientific Research; Korea Science and
Engineering Foundation
FX We thank the RHIC Operations Group and RCF at BNL, and the NERSC Center
at LBNL, and the resources provided by the Open Science Grid consortium
for their support. This work was supported in part by the Offices of NP
and HEP within the U. S. DOE Office of Science; the U. S. NSF; the Sloan
Foundation; the DFG Excellence Cluster EXC153 of Germany; CNRS/IN2P3,
RA, RPL, and EMN of France; STFC and EPSRC of the United Kingdom; FAPESP
of Brazil; the Russian Ministry of Science and Technology; the NNSFC,
CAS, MoST, and MoE of China; IRP and GA of the Czech Republic; FOM of
The Netherlands; DAE, DST, and CSIR of the Government of India; the
Swiss NSF; the Polish State Committee for Scientific Research; and the
Korea Science and Engineering Foundation.
NR 27
TC 16
Z9 16
U1 1
U2 16
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 MAR 20
PY 2009
VL 102
IS 11
AR 112301
DI 10.1103/PhysRevLett.102.112301
PG 7
WC Physics, Multidisciplinary
SC Physics
GA 421TC
UT WOS:000264380200020
PM 19392193
ER
PT J
AU Barron, CN
Kara, AB
Jacobs, GA
AF Barron, C. N.
Kara, A. B.
Jacobs, G. A.
TI Objective estimates of westward Rossby wave and eddy propagation from
sea surface height analyses
SO JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
LA English
DT Article
ID NORTH PACIFIC OCEAN; LONG WAVES; ALTIMETER; SATELLITE; VARIABILITY;
ATLANTIC; EDDIES; LEVEL; MODEL
AB An objective method to estimate westward propagation of sea surface height (SSH) anomalies is introduced and compared to a subjective technique. Both approaches use time series extracted from global SSH analyses, prepared by optimal interpolation of altimeter data, as described in detail. The cost function used in the objective method calculates the mean along-slope standard deviation, where slope is the reciprocal of propagation speed and defines the angle of linear samples through the SSH time series along each transect. The along-slope standard deviation can be computed as an extension of the Radon transform, as shown. The optimum speed estimate minimizes the cost function, and speeds with mean along-slope standard deviation within 1% of the minimum define the range of uncertainty. The 1% criteria was chosen to give a seemingly reasonable uncertainty range over a variety of cases and does not imply a specific probability that the true minimum is bounded in the uncertainty range. Applied in the central Pacific, objective speed estimates increase from 1 cm s(-1) or less at the highest latitudes to above 30 cm s(-1) nearer the equator. Subjective speed estimates are similar to, but generally lower than, their objective counterparts, reflecting a bias in subjective interpretation that is likely to vary among different individuals. A more detailed examination of the along-slope minimization over 160 degrees E-95 degrees W focuses on the higher low-latitude speeds, returning estimates of 48 cm s(-1) (45 cm s(-1)) at 5.5 degrees N (5.5 degrees S) over 1993-2006. The corresponding 42-55 cm s(-1) (38 65 cm s(-1)) uncertainty ranges bound most of the predictions from sensitivity test cases with alternate preprocessing filters or different multiyear time windows, although variability is larger south of the equator. The findings are consistent with prior studies and suggest the methods may be useful for other applications over the global ocean.
C1 [Barron, C. N.; Kara, A. B.; Jacobs, G. A.] USN, Res Lab, Div Oceanog, Stennis Space Ctr, MS 39529 USA.
RP Barron, CN (reprint author), USN, Res Lab, Div Oceanog, Code 7320,Bldg 1009, Stennis Space Ctr, MS 39529 USA.
EM charlie.barron@nrlssc.navy.mil
RI Barron, Charlie/C-1451-2008
FU Office of Naval Research; [NRL/JA/7320/08/8241]
FX We would like to thank Kirk Whitmer (formerly of NRL) and Robert Broome
of Planning Systems Inc. for their work on processing the altimeter
data, Jan Dastugue of NRL for her help in developing and maintaining the
MODAS Web site, and Mike Carnes of NRL for referring us to the digitized
gravity wave phase speed data. We thank our two anonymous reviewers for
their constructive comments and suggestions. This work is funded by the
Office of Naval Research under the 6.2 project Improved Synthetic Ocean
Properties. The paper is contribution NRL/JA/7320/08/8241 and has been
approved for public release.
NR 35
TC 7
Z9 7
U1 0
U2 7
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 0148-0227
J9 J GEOPHYS RES-OCEANS
JI J. Geophys. Res.-Oceans
PD MAR 17
PY 2009
VL 114
AR C03013
DI 10.1029/2008JC005044
PG 18
WC Oceanography
SC Oceanography
GA 422PL
UT WOS:000264440100004
ER
PT J
AU Rife, JC
Long, JP
Wilkinson, J
Whitman, LJ
AF Rife, Jack C.
Long, James P.
Wilkinson, John
Whitman, Lloyd J.
TI Particle Tracking Single Protein-Functionalized Quantum Dot Diffusion
and Binding at Silica Surfaces
SO LANGMUIR
LA English
DT Article
ID TOTAL INTERNAL-REFLECTION; FLUORESCENCE CORRELATION SPECTROSCOPY; BOVINE
SERUM-ALBUMIN; SEMICONDUCTOR NANOCRYSTALS; BROWNIAN DIFFUSION; LATERAL
DIFFUSION; ADSORPTION; DYNAMICS; BLINKING; SUPPRESSION
AB We evaluate commercial QD585 and QD605 streptavidin-functionalized quantum dots (QDs) for single-particle tracking microscopy at surfaces using total internal reflectance fluorescence and measure single QD diffusion and nonspecific binding at silica surfaces in static and flow conditions. The QD diffusion coefficient on smooth, near-ideal, highly hydroxylated silica surfaces is near bulk-solution diffusivity, as expected for repulsive surfaces, but many QD trajectories on rougher, less-than-ideal surfaces or regions display transient adsorptions. We attribute the binding to defect sites or adsorbates, possibly in conjunction with protein conformation changes, and estimate binding energies from the transient adsorption lifetimes. We also assess QD parameters relevant to tracking, including hydrodynamic radius, charge state, signal levels, blinking reduction with reducing solutions, and photoinduced blueing and bleaching.
C1 [Rife, Jack C.; Long, James P.; Whitman, Lloyd J.] USN, Res Lab, Washington, DC 20375 USA.
[Wilkinson, John] USN, Ctr Surface Weap, Indian Head, MD 20640 USA.
RP Rife, JC (reprint author), USN, Res Lab, Washington, DC 20375 USA.
EM rife@nrl.navy.mil
RI Whitman, Lloyd/G-9320-2011
OI Whitman, Lloyd/0000-0002-3117-1174
FU Defense Threat Reduction Agency; Joint Science and Technology Office;
Office of Naval Research
FX We thank Michael Malito for flow cell and kinematic microscope mount
fabrication, Shawn Mulvaney for chemistry discussions, and Hedi Mattousi
and Dorothy Farrell for help with the dynamic light scattering and
zeta-potential measurements. This work was supported by the Defense
Threat Reduction Agency, Joint Science and Technology Office and by the
Office of Naval Research.
NR 56
TC 6
Z9 6
U1 1
U2 11
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0743-7463
J9 LANGMUIR
JI Langmuir
PD MAR 17
PY 2009
VL 25
IS 6
BP 3509
EP 3518
DI 10.1021/la802144e
PG 10
WC Chemistry, Multidisciplinary; Chemistry, Physical; Materials Science,
Multidisciplinary
SC Chemistry; Materials Science
GA 418JR
UT WOS:000264145000031
PM 19708242
ER
PT J
AU Volk, B
Grassi, F
AF Volk, Bradford
Grassi, Frank
TI Treatment of the Post-ICU Patient in an Outpatient Setting
SO AMERICAN FAMILY PHYSICIAN
LA English
DT Article
ID POSTTRAUMATIC-STRESS-DISORDER; QUALITY-OF-LIFE; INTENSIVE-CARE-UNIT;
CRITICAL ILLNESS POLYNEUROPATHY; RESPIRATORY-DISTRESS-SYNDROME;
CRITICALLY-ILL PATIENTS; SURVIVORS; RISK; COMPLICATIONS; TRANSFUSION
AB The care of a patient in the intensive care unit extends well beyond his or her hospitalization. Evaluation of a patient after leaving the intensive care unit involves a review of the hospital stay, including principal diagnosis, exposure to medications, period spent in the intensive care unit, and history of prolonged mechanical ventilation. Fatigue should prompt evaluation for possible anemia, nutritional deficits, sleep disturbance, muscular deconditioning, and neurologic impairment. Other common problems include poor appetite with possible weight loss, falls, and sexual dysfunction. Psychological morbidities, posttraumatic stress disorder, anxiety disorder, and depression also often occur in the post-intensive care unit patient. These conditions are more common among patients with a history of delirium, prolonged sedation, mechanical ventilation, and acute respiratory distress syndrome. The physician should gain an understanding of the patient's altered quality of life, including employment status, and the state of his or her relationships with loved ones or the primary care-giver. As in many aspects of medicine, a multidisciplinary treatment approach is most beneficial to the post-intensive care unit patient. (Am Fam Physician. 2009;79(6):459-464. Copyright (C) 2009 American Academy of Family Physicians.)
C1 [Volk, Bradford] Naval Hosp Yokosuka, Yokosuka, Kanagawa, Japan.
[Grassi, Frank] USN, San Diego Med Ctr, San Diego, CA USA.
RP Volk, B (reprint author), PSC 475 Box 1597, FPO, AP 96350 USA.
EM bradford.volk@med.navy.mil
NR 34
TC 10
Z9 10
U1 1
U2 3
PU AMER ACAD FAMILY PHYSICIANS
PI KANSAS CITY
PA 8880 WARD PARKWAY, KANSAS CITY, MO 64114-2797 USA
SN 0002-838X
J9 AM FAM PHYSICIAN
JI Am. Fam. Physician
PD MAR 15
PY 2009
VL 79
IS 6
BP 459
EP 464
PG 6
WC Primary Health Care; Medicine, General & Internal
SC General & Internal Medicine
GA 420QV
UT WOS:000264305200005
PM 19323358
ER
PT J
AU Kruszka, P
O'Brian, RJ
AF Kruszka, Paul
O'Brian, Robert J.
TI Diagnosis and Management of Sjogren Syndrome
SO AMERICAN FAMILY PHYSICIAN
LA English
DT Article
ID EUROPEAN CONSENSUS GROUP; CONTROLLED-TRIAL; CLINICAL-MANIFESTATIONS;
DOUBLE-BLIND; XEROSTOMIA; MORTALITY; PILOCARPINE; CEVIMELINE; DISORDERS;
MORBIDITY
AB Sjogren syndrome is a systemic autoimmune disease characterized by dry eyes and dry mouth. Other organ systems are affected in many patients. Sjogren syndrome is classified as primary or secondary. In primary disease, Sjogren syndrome is a solitary process, whereas secondary disease accompanies another autoimmune disease-often rheumatoid arthritis. Sjogren syndrome is a challenging diagnosis, requiring the family physician to coordinate with a team of specialists, including dentists, otolaryngologists, rheumatologists, and ophthalmologists. Pilocarpine and cevimeline can help relieve dry eyes and dry mouth. (Am Fain Physician. 2009;79(6):465-470,472. Copyright (C) 2009 American Academy of Family Physicians.)
C1 [Kruszka, Paul] US Coast Guard Yard, Baltimore, MD USA.
[O'Brian, Robert J.] USN, Natl Naval Med Ctr, Bethesda, MD 20084 USA.
RP Kruszka, P (reprint author), 3402 Wessynton Way, Alexandria, VA 22309 USA.
EM paul_kruszka@hotmail.com
NR 34
TC 20
Z9 22
U1 0
U2 5
PU AMER ACAD FAMILY PHYSICIANS
PI KANSAS CITY
PA 8880 WARD PARKWAY, KANSAS CITY, MO 64114-2797 USA
SN 0002-838X
J9 AM FAM PHYSICIAN
JI Am. Fam. Physician
PD MAR 15
PY 2009
VL 79
IS 6
BP 465
EP 470
PG 6
WC Primary Health Care; Medicine, General & Internal
SC General & Internal Medicine
GA 420QV
UT WOS:000264305200006
PM 19323359
ER
PT J
AU Liu, BW
Rieck, D
Van Wie, BJ
Cheng, GJ
Moffett, DF
Kidwell, DA
AF Liu, Bingwen
Rieck, Daniel
Van Wie, Bernard J.
Cheng, Gary J.
Moffett, David F.
Kidwell, David A.
TI Bilayer lipid membrane (BLM) based ion selective electrodes at the
meso-, micro-, and nano-scales
SO BIOSENSORS & BIOELECTRONICS
LA English
DT Article
DE Ion selective electrodes; Bilayer lipid membranes; Micro-fabrication;
Dibenzo-18-crown-6
ID POTENTIOMETRIC RESPONSES; CHANNEL SENSOR; GRAMICIDIN; SOLVENT
AB This paper presents a novel method for making micron-sized apertures with tapered sidewalls and nanosized apertures. Their use in bilayer lipid membrane-based ion selective electrode design is demonstrated and compared to mesoscale bilayers and traditional PVC ion selective electrodes. Micron-sized apertures are fabricated in SU-8 photoresist films and vary in diameter from 10 to 40 mu m. The tapered edges in SU-8 films are desired to enhance bilayer lipid membrane (BLM) formation and are fabricated by UV-light overexposure. Nano-apertures are made in boron diffused silicon film. The membranes are used as septa to separate two potassium chloride solutions of different concentrations. Lecithin BLMs are assembled on the apertures by ejecting lipid solution. Potassium ionophore, dibenzo-18-crown-6, is incorporated into BLMs by dissolving it in the lipid solution before membrane assembly. Voltage changes with increasing potassium ion concentrations are recorded with an A/D converter. Various ionophore concentrations in BLMs are investigated. At least a 1% concentration is needed for consistent slopes. Electrode response curves are linear over the 10(-6) to 0.1 M range with a sub-Nemstian slope of 20 mV per Log concentration change. This system shows high selectivity to potassium ions over potential interfering sodium ions. BLMs on the three different aperture sizes at the meso-, micro-, and nano-scales all show similar linear ranges and limits of detection (LODs) as PVC ion selective membranes. (C) 2008 Elsevier B.V. All rights reserved.
C1 [Liu, Bingwen; Rieck, Daniel; Van Wie, Bernard J.] Washington State Univ, Sch Chem Engn & Bioengn, Pullman, WA 99164 USA.
[Cheng, Gary J.] Purdue Univ, Sch Ind Engn, W Lafayette, IN 47906 USA.
[Moffett, David F.] Washington State Univ, Sch Biol Sci, Pullman, WA 99164 USA.
[Kidwell, David A.] USN, Res Lab, Washington, DC 20375 USA.
RP Van Wie, BJ (reprint author), Washington State Univ, Sch Chem Engn & Bioengn, Pullman, WA 99164 USA.
EM bvanwie@che.wsu.edu
RI Liu, Bingwen/I-6226-2013
OI Liu, Bingwen/0000-0002-0092-6685
FU National Science Foundation [BES BES-0508521]; NIH biotechnology
[5T32-GM008336-16]; Technical Support Working Group [T-242A]; Washington
State University School of Chemical Engineering and Bioengineering
FX We acknowledge research support from the National Science Foundation
Grant BES BES-0508521, the NIH biotechnology Training Grant NIH
5T32-GM008336-16, the Technical Support Working Group Contract T-242A
and the Washington State University School of Chemical Engineering and
Bioengineering.
NR 31
TC 19
Z9 20
U1 1
U2 16
PU ELSEVIER ADVANCED TECHNOLOGY
PI OXFORD
PA OXFORD FULFILLMENT CENTRE THE BOULEVARD, LANGFORD LANE, KIDLINGTON,
OXFORD OX5 1GB, OXON, ENGLAND
SN 0956-5663
J9 BIOSENS BIOELECTRON
JI Biosens. Bioelectron.
PD MAR 15
PY 2009
VL 24
IS 7
BP 1843
EP 1849
DI 10.1016/j.bios.2008.09.019
PG 7
WC Biophysics; Biotechnology & Applied Microbiology; Chemistry, Analytical;
Electrochemistry; Nanoscience & Nanotechnology
SC Biophysics; Biotechnology & Applied Microbiology; Chemistry;
Electrochemistry; Science & Technology - Other Topics
GA 427PK
UT WOS:000264791000005
PM 19008091
ER
PT J
AU Batteen, ML
Miller, HA
AF Batteen, Mary L.
Miller, Henry A.
TI Process-oriented modeling studies of the 5500-km-long boundary flow off
western and southern Australia
SO CONTINENTAL SHELF RESEARCH
LA English
DT Article
DE Ocean modeling; Boundary currents; Shelf currents; Ocean eddies; Leeuwin
Current; Leeuwin Undercurrent; Flinders Current
ID CALIFORNIA CURRENT SYSTEM; GENERAL-CIRCULATION MODEL; LEEUWIN CURRENT
SYSTEM; CAPES CURRENT; INDIAN-OCEAN; SHELF-SLOPE; EDDIES; CURRENTS;
IMPLEMENTATION; UNDERCURRENT
AB White the unique character of the coastal current system off the western and southern coasts of Australia has been recognized, this vast 5500-km-long boundary flow has been studied far less than Other current systems of the world. Recent observational studies from satellite altimetry and climatology are consistent with a continuous current extending from its origin at the North West Cape to the Southern tip of Tasmania. To date, coastal modeling Studies have focused on either the western Australian coast to Esperance or on southern Australia. There has been no process-oriented Modeling study of the entire region that would allow the systematic exploration of the two independent forcing mechanisms i.e. wind-forcing and thermohaline gradients) and their interactions that have been noted to act in a synergistic manner to maintain the longest Continuous coastal Current system in the world.
This study uses a regional circulation model (in this case the Princeton Ocean Model (POM)) to systematically address the roles the forcing mechanisms play in generating and maintaining the major features of this continuous coastal current system. Several process-oriented experiments, arranged in order of increasing complexity, are explored. The results show that, even in the absence of bottom topography, a continuous 5500 km coastal current system can be generated by wind forcing or by thermohaline forcing. If wind forcing alone IS used, coastal currents in the direction of the wind and Opposing undercurrents can be generated, If thermohaline forcing alone is used, coastal currents in the opposite direction of the wind and subsurface Currents similar to the Flinders Current can be generated.
The addition of topography shows that topography is responsible for the currents' shelf break locations and, for broad shelf regions, call separate the Surface flow into two cores, one at the coast and one over the shelf. On the west coast, topographic beta due to the continental slope prevents currents from becoming broader and drifting offshore. The combination of wind forcing, thermohaline gradients and topography show that swift currents forced by thermolialine gradients are slowed to more realistic speeds by opposing wind and by topography. Meanders and eddies result from the opposition of surface and subsurface currents as well as from thermohaline and wind forcing. The results illustrate that the 5500-km-long current system over the shelf break can be maintained yearlong due to the two independent forcing mechanisms, their interactions, and the strong trapping effect of bottom topography.
The seasonal and daily wind-forcing, experiments highlight both the seasonal and interannual variability of this complex current system. The Leeuwin Current along the western coast is slightly stronger in winter (July) than summer (January). There is Much greater mesoscale activity in January when the opposing winds are strongest. The results also show that, although upwelling has been observed only in the summer in the Capes Current region, Upwelling Occurs intermittently in the 2001 winter but not in the 2001 summer. This illustrates that, depending oil the strength of the forcing mechanism, Such as strong equatorward winter 2001 winds, features Such as upwelling oil the west coast, usually thought to exist in the summer but only intermittently, can occur in different seasons. Along the southern coast, a gyre forms intermittently in the Great Australian Bight in summer, but the flow is constantly eastward across the entire shelf in winter. The production of upwelling in the Great Australian Right during the 2000 summer but not during the 2001 Summer is all indication of the importance of interannual variability. Overall, the results of this process-oriented study compare well with available observations off western and southern it Australia. Published by Elsevier Ltd.
C1 [Batteen, Mary L.; Miller, Henry A.] USN, Postgrad Sch, Dept Oceanog, Monterey, CA 93943 USA.
RP Batteen, ML (reprint author), USN, Postgrad Sch, Dept Oceanog, 833 Dyer Rd,Room 328, Monterey, CA 93943 USA.
EM mlbattee@nps.edu
NR 61
TC 6
Z9 6
U1 4
U2 11
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0278-4343
EI 1873-6955
J9 CONT SHELF RES
JI Cont. Shelf Res.
PD MAR 15
PY 2009
VL 29
IS 4
BP 702
EP 718
DI 10.1016/j.csr.2008.11.011
PG 17
WC Oceanography
SC Oceanography
GA 429GZ
UT WOS:000264910200002
ER
PT J
AU Subramanian, P
Vourlidas, A
AF Subramanian, Prasad
Vourlidas, Angelos
TI DRIVING CURRENTS FOR FLUX ROPE CORONAL MASS EJECTIONS
SO ASTROPHYSICAL JOURNAL
LA English
DT Article
DE MHD; plasmas; Sun: coronal mass ejections (CMEs)
ID INTERPLANETARY MAGNETIC CLOUDS; LOOP TRANSIENTS; HELICITY; ENERGETICS;
ERUPTIONS; ROTATION; FLARES; MODEL
AB We present a method for measuring electrical currents enclosed by flux rope structures that are ejected within solar coronal mass ejections (CMEs). Such currents are responsible for providing the Lorentz self-force that propels CMEs. Our estimates for the driving current are based on measurements of the propelling force obtained using data from the LASCO coronagraphs aboard the SOHO satellite. We find that upper limits on the currents enclosed by CMEs are typically around 10(10) A. We estimate that the magnetic flux enclosed by the CMEs in the LASCO field of view is a few times 10(21) Mx.
C1 [Subramanian, Prasad] Indian Inst Sci Educ & Res, Pune 411021, Maharashtra, India.
[Vourlidas, Angelos] USN, Res Lab, Washington, DC 20375 USA.
RP Subramanian, P (reprint author), Indian Inst Sci Educ & Res, Sai Trin Bldg, Pune 411021, Maharashtra, India.
EM p.subramanian@iiserpune.ac.in
RI Vourlidas, Angelos/C-8231-2009
OI Vourlidas, Angelos/0000-0002-8164-5948
NR 27
TC 5
Z9 5
U1 0
U2 2
PU IOP PUBLISHING LTD
PI BRISTOL
PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND
SN 0004-637X
J9 ASTROPHYS J
JI Astrophys. J.
PD MAR 10
PY 2009
VL 693
IS 2
BP 1219
EP 1222
DI 10.1088/0004-637X/693/2/1219
PG 4
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 417RR
UT WOS:000264095100015
ER
PT J
AU Feldman, U
Dammasch, IE
Landi, E
AF Feldman, U.
Dammasch, I. E.
Landi, E.
TI THE EMISSION MEASURE OF THE SOLAR LOWER TRANSITION REGION (2 x 10(4)-2 x
10(5) K)
SO ASTROPHYSICAL JOURNAL
LA English
DT Article
DE Sun: transition region
ID UNRESOLVED FINE-STRUCTURES; OPTICALLY THIN PLASMAS; TEMPERATURE REGION;
ATOMIC DATABASE; ATMOSPHERE; SUMER; DIAGNOSTICS; BALANCE; CHIANTI; LINES
AB We analyze Solar Ultraviolet Measurements of Emitted Radiation (SUMER) spectra in the 750-790 angstrom wavelength range from 12 different solar regions on the disk to measure the thermal structure of the lower transition region (LTR). We considered four coronal hole (CH), four quiet Sun (QS), and four active region (AR) data sets observed by SUMER during the rising phase of the solar cycle, and we analyzed the emission of seven different ions formed between 2 x 10(4) and 2 x 10(5) K. We study the spatial variation of line radiances along the slit within each observation, as well as their relative radiances in different data sets. We also use them to determine the differential emission measure of the LTR. We find that all lines behave in the same way both along the slit within the same observation, and between different data sets from different regions of the Sun. We also find that while the absolute value of the differential emission measure of LTR plasmas changes from region to region, its distribution with temperature is fairly constant, suggesting that the thermal structure of LTR plasmas is the same in CH, QS, and AR regions, and as a function of time along the solar cycle. We discuss the implications of our results for studies of coronal heating and of the solar cycle.
C1 [Feldman, U.; Landi, E.] Artep Inc, Columbia, MD 21042 USA.
[Landi, E.] USN, Res Lab, Div Space Sci, Washington, DC 20375 USA.
[Dammasch, I. E.] Observ Royal Belgique, Solar Influences Data Anal Ctr, B-1180 Brussels, Belgium.
RP Feldman, U (reprint author), Artep Inc, 2922 Excelsior Spring Circle, Columbia, MD 21042 USA.
RI Landi, Enrico/H-4493-2011
FU NASA; [NNG06EA14I]; [NNH06CD24C]
FX This work was supported by the NNG06EA14I, NNH06CD24C, and other NASA
grants.
NR 20
TC 5
Z9 5
U1 0
U2 2
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 MAR 10
PY 2009
VL 693
IS 2
BP 1474
EP 1483
DI 10.1088/0004-637X/693/2/1474
PG 10
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 417RR
UT WOS:000264095100038
ER
PT J
AU Huang, L
Massa, L
Karle, I
Karle, J
AF Huang, Lulu
Massa, Lou
Karle, Isabella
Karle, Jerome
TI Calculation of strong and weak interactions in TDA1 and RangDP52 by the
kernel energy method
SO PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF
AMERICA
LA English
DT Article
DE CH-O bonds; cooperativity of bonds; cysteine macrocycles; NH-CO bonds;
NH-S
ID SET SUPERPOSITION ERROR; QUANTUM CRYSTALLOGRAPHY; PI-INTERACTIONS;
HYDROGEN-BONDS; PROTEINS; SYSTEMS; ATOMS; RNA
AB Using the Kernel Energy Method we apply ab initio quantum mechanics to study the relative importance of weak and strong interactions (including hydrogen bonds) in the crystal structures of the title compounds TDA1 and RangDP52. Perhaps contrary to widespread belief, in these compounds the weak interaction energies, because of their large number and cooperativity, can be significant to the binding energetics of the crystal, and thus also to its other properties.
C1 [Huang, Lulu; Karle, Isabella; Karle, Jerome] Naval Res Lab, Washington, DC 20375 USA.
[Massa, Lou] CUNY, Dept Chem, CUNY Hunter Coll, New York, NY 10065 USA.
[Massa, Lou] CUNY, Grad Ctr, New York, NY 10065 USA.
RP Karle, I (reprint author), Naval Res Lab, 4555 Overlook Ave SW, Washington, DC 20375 USA.
EM isabella.karle@nrl.navy.mil
FU Office of Naval Research and National Institutes of Health [GM30902];
National Institutes of Health [RR-03037]
FX We thank the referee for prompting clarifications in our manuscript. L.
M. thanks the U. S. Navy Summer Faculty Research Program administered by
the American Society of Engineering Education for the opportunity to
spend summers at the Naval Research Laboratory. This work was supported
by the Office of Naval Research and National Institutes of Health Grant
GM30902. L. M. was supported by National Institutes of Health Grant
RR-03037.
NR 30
TC 19
Z9 19
U1 0
U2 3
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 MAR 10
PY 2009
VL 106
IS 10
BP 3664
EP 3669
DI 10.1073/pnas.0900403106
PG 6
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA 416WT
UT WOS:000264036900007
PM 19234108
ER
PT J
AU Awo-Affouda, C
van 't Erve, OMJ
Kioseoglou, G
Hanbicki, AT
Holub, M
Li, CH
Jonker, BT
AF Awo-Affouda, C.
van 't Erve, O. M. J.
Kioseoglou, G.
Hanbicki, A. T.
Holub, M.
Li, C. H.
Jonker, B. T.
TI Contributions to Hanle lineshapes in Fe/GaAs nonlocal spin valve
transport
SO APPLIED PHYSICS LETTERS
LA English
DT Article
DE ferromagnetic materials; gallium arsenide; Hanle effect; III-V
semiconductors; iron; magnetic domains; semiconductor-metal boundaries;
spin polarised transport; spin valves
ID ELECTRICAL DETECTION; INJECTION; SEMICONDUCTORS; PRECESSION; BARRIER;
FIELD
AB The transport Hanle effect is commonly used to determine spin lifetimes in spin-polarized transport structures. We show that the domain structure of ferromagnetic contacts used to inject and detect the spin current introduces asymmetries to the Hanle lineshape. In addition, the nuclear spin polarization can produce anomalous narrowing and broadening of the Hanle linewidth depending upon the orientation of the transport spin and the applied field. Neither effect is included in the analysis typically applied. We illustrate how these contributions can significantly impact the apparent spin lifetime extracted from the transport Hanle lineshape, and how they can be compensated for.
C1 [Awo-Affouda, C.; van 't Erve, O. M. J.; Kioseoglou, G.; Hanbicki, A. T.; Holub, M.; Li, C. H.; Jonker, B. T.] USN, Res Lab, Washington, DC 20375 USA.
RP Awo-Affouda, C (reprint author), USN, Res Lab, Washington, DC 20375 USA.
EM cawo@anvil.nrl.navy.mil; jonker@nrl.navy.mil
RI Schaff, William/B-5839-2009
FU NRL; NRC
FX This work was supported by core programs at the NRL and NRC
associateships (C.A.A. and M. H.)
NR 15
TC 21
Z9 21
U1 0
U2 11
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 MAR 9
PY 2009
VL 94
IS 10
AR 102511
DI 10.1063/1.3097012
PG 3
WC Physics, Applied
SC Physics
GA 420HO
UT WOS:000264280000062
ER
PT J
AU Zimbovskaya, NA
Pederson, MR
Blum, AS
Ratna, BR
Allen, R
AF Zimbovskaya, Natalya A.
Pederson, Mark R.
Blum, Amy S.
Ratna, Banahalli R.
Allen, Reeshemah
TI Nanoparticle networks as chemoselective sensing devices
SO JOURNAL OF CHEMICAL PHYSICS
LA English
DT Article
DE ab initio calculations; chemical sensors; electronic structure; gold;
metal-insulator boundaries; molecular electronics; nanoelectronics;
nanoparticles; nanosensors; organic compounds
ID MOLECULAR WIRES; NANOWIRES; CRYSTAL; BRIDGES; VIRUS
AB We theoretically analyzed transport properties of a molecular network constructed of gold nanoparticles linked with oligophenylenevinulene (OPV) molecules. We showed that the conductance of such system was strongly reduced when trinitrotoluene (TNT) became attached to the OPV linkers in the network. The reported results are based on the ab initio electronic structure calculations. These results corroborate and elucidate experiments which revealed significant drops in the conductance the network while the latter was exposed to TNT vapors. The results suggest that the detected sensitivity of transport characteristics of the considered nanoparticle network to TNT may be used to design a sensing nanodevice.
C1 [Zimbovskaya, Natalya A.] Univ Puerto Rico Humacao, Dept Phys & Elect, CUH Stn, Humacao, PR 00791 USA.
[Zimbovskaya, Natalya A.] Univ Puerto Rico, Inst Funct Nanomat, San Juan, PR 00931 USA.
[Zimbovskaya, Natalya A.; Pederson, Mark R.; Blum, Amy S.; Ratna, Banahalli R.; Allen, Reeshemah] USN, Res Lab, Washington, DC 20375 USA.
RP Zimbovskaya, NA (reprint author), Univ Puerto Rico Humacao, Dept Phys & Elect, CUH Stn, Humacao, PR 00791 USA.
EM natalya.zimbovskaya@upr.edu
FU ASEE; ONR Summer Faculty Research
FX We thank G. M. Zimbovsky for help with the manuscript. N.Z. acknowledges
support from the ASEE and ONR Summer Faculty Research program.
NR 24
TC 7
Z9 7
U1 0
U2 11
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 MAR 7
PY 2009
VL 130
IS 9
AR 094702
DI 10.1063/1.3081185
PG 4
WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical
SC Chemistry; Physics
GA 423VD
UT WOS:000264522900024
PM 19275413
ER
PT J
AU Hyer, EJ
Reid, JS
AF Hyer, Edward J.
Reid, Jeffrey S.
TI Baseline uncertainties in biomass burning emission models resulting from
spatial error in satellite active fire location data
SO GEOPHYSICAL RESEARCH LETTERS
LA English
DT Article
ID ABOVEGROUND BIOMASS; SCAR-B; MODIS; VALIDATION; AMERICA; PRODUCT;
SCIENCE
AB Global and regional-scale estimates of biomass burning emissions rely on satellite data products with varying spatial resolution. In heterogeneous landscapes, moderate-resolution fire location data may not capture fine-scale variation in fuel type, leading to both random and systematic error in emissions. Using 120-meter land cover data for the Amazon basin, we estimate the probability of accurate classification of individual fires at 88% for MODIS and 74% for GOES. Classification error limits the ability of emission models to reproduce patterns of emissions, and can only be reduced by innovative use of current satellite data or ancillary data. Emissions biases caused by spatial error vary with regional distribution of fire types. For regional-scale studies in the Amazon Basin, we estimate emissions biases of +3% to +19% for MODIS and +6% to +39% for GOES. The difference between these two systems is an important consideration for multi-sensor fire applications. Citation: Hyer, E. J., and J. S. Reid (2009), Baseline uncertainties in biomass burning emission models resulting from spatial error in satellite active fire location data, Geophys. Res. Lett., 36, L05802, doi: 10.1029/2008GL036767.
C1 [Hyer, Edward J.] USN, Res Lab, Visiting Scientist Programs, Univ Ctr Atmospher Res, Monterey, CA 93943 USA.
[Reid, Jeffrey S.] USN, Res Lab, Marine Meteorol Div, Monterey, CA 93943 USA.
RP Hyer, EJ (reprint author), USN, Res Lab, Visiting Scientist Programs, Univ Ctr Atmospher Res, 7 Grace Hopper Ave,Stop 2, Monterey, CA 93943 USA.
EM ehyer@ucar.edu
RI Hyer, Edward/E-7734-2011
OI Hyer, Edward/0000-0001-8636-2026
FU NASA Interdisciplinary Science Program and Office of Naval Research
(ONR)
FX This work was performed as part of the Fire Locating and Modeling of
Burning Emissions (FLAMBE) program and supported by the NASA
Interdisciplinary Science Program and Office of Naval Research (ONR)
Code 32.
NR 23
TC 21
Z9 21
U1 0
U2 11
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 0094-8276
J9 GEOPHYS RES LETT
JI Geophys. Res. Lett.
PD MAR 4
PY 2009
VL 36
AR L05802
DI 10.1029/2008GL036767
PG 5
WC Geosciences, Multidisciplinary
SC Geology
GA 415PM
UT WOS:000263946500004
ER
PT J
AU Kara, AB
Wallcraft, AJ
Hurlburt, HE
Loh, WY
AF Kara, A. B.
Wallcraft, A. J.
Hurlburt, H. E.
Loh, W. -Y.
TI Which surface atmospheric variable drives the seasonal cycle of sea
surface temperature over the global ocean?
SO JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
LA English
DT Article
ID WATER TURBIDITY; MIXED-LAYER; MODEL; CLIMATOLOGY; SIMULATIONS;
VARIABILITY; ANOMALIES; SST; SENSITIVITY; IMPACT
AB The impact of near-surface atmospheric variables used in driving the seasonal cycle of climatological mean sea surface temperature (SST) is quantified over the global ocean. The six atmospheric variables are air temperature, vapor mixing ratio, wind speed, precipitation, net shortwave radiation, and net longwave radiation, the first (last) three just above (at) the sea surface. Atmospherically forced ocean general circulation model (OGCM) simulations with no data assimilation are performed using monthly and annual means of those variables under the assumption that variations in climatological monthly SSTs are driven by atmospheric variables. SSTs resulting from these simulations are compared with those from a satellite-based field to determine the impact of each atmospheric variable. Large spatial variability is found in the order of impact (most to least) of six atmospheric variables. In general, the SST seasonal cycle is driven primarily by shortwave radiation at midlatitudes, but wind speed is the major controlling variable in the Indian Ocean. Precipitation has almost no significant influence on monthly SST. Overall, shortwave radiation is the most influential variable controlling the seasonal cycle of SST over 34.3% of the global ocean. Wind speed is the second most important variable (27.2%). In tropical regions and the Arabian Sea, sources other than the atmospheric thermal forcing are found to play a significant role in regulating the SST seasonal cycle.
C1 [Kara, A. B.; Wallcraft, A. J.; Hurlburt, H. E.] USN, Res Lab, Stennis Space Ctr, Div Oceanog, Mississippi State, MS 39529 USA.
[Loh, W. -Y.] Univ Wisconsin, Dept Stat, Madison, WI 53706 USA.
RP Kara, AB (reprint author), USN, Res Lab, Stennis Space Ctr, Div Oceanog, Code 7320,Bldg 1009, Mississippi State, MS 39529 USA.
EM birol.kara@nrlssc.navy.mil
FU U. S. Army Research Laboratory; U. S. Army Research Office
[W911NF-05-1-0047]; Department of Defense High Performance Computing
Modernization Program; United States Army Engineer Research and
Development Center (ERDC) [NRL/JA/7320/08/8168]
FX Appreciation is extended to anonymous reviewers whose helpful comments
improved the quality of this paper. This work was funded by the Office
of Naval Research (ONR) under the 6.1 project, Global Remote Littoral
Forcing via Deep Water Pathways, and the project U. S. GODAE: global
ocean prediction with the Hybrid Coordinate Ocean Model (HYCOM) funded
under the National Ocean Partnership Program. Wei-Yin Loh's research was
partially supported by the U. S. Army Research Laboratory and the U. S.
Army Research Office under grant W911NF-05-1-0047. HYCOM simulations
were performed under the Department of Defense High Performance
Computing Modernization Program on an IBM SP POWER3 and on an HP/COMPAQ
SC45 at the United States Army Engineer Research and Development Center
(ERDC), Vicksburg, MS. The paper is contribution NRL/JA/7320/08/8168 and
has been approved for public release.
NR 26
TC 2
Z9 2
U1 0
U2 1
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 2169-897X
J9 J GEOPHYS RES-ATMOS
JI J. Geophys. Res.-Atmos.
PD MAR 3
PY 2009
VL 114
AR D05101
DI 10.1029/2008JD010420
PG 14
WC Meteorology & Atmospheric Sciences
SC Meteorology & Atmospheric Sciences
GA 415QG
UT WOS:000263948800002
ER
PT J
AU Maximenko, SI
Freitas, JA
Klein, PB
Shrivastava, A
Sudarshan, TS
AF Maximenko, Serguei I.
Freitas, Jaime A., Jr.
Klein, Paul B.
Shrivastava, Amitesh
Sudarshan, Tangali S.
TI Cathodoluminescence study of the properties of stacking faults in 4H-SiC
homoepitaxial layers
SO APPLIED PHYSICS LETTERS
LA English
DT Article
DE carrier lifetime; cathodoluminescence; energy gap; excitons; inclusions;
multilayers; semiconductor epitaxial layers; silicon compounds; stacking
faults; time resolved spectra; wide band gap semiconductors
ID LOW-TEMPERATURE PHOTOLUMINESCENCE; DEFECTS; EPILAYERS; SI
AB In-grown stacking faults in n-type 4H-SiC epitaxial layers have been investigated by real-color cathodoluminescence imaging and spectroscopy carried out at room and liquid helium temperatures. Stacking faults with 8H stacking order were observed, as well as double layer and multilayer 3C-SiC structures and a defect with an excitonic band gap at 2.635 eV. It was found that 8H stacking faults and triangular surface defects can be generated from similar nucleation sources. Time-resolved measurements reveal that compared to defect-free regions, the carrier lifetimes are severely reduced by the presence of stacking faults corresponding to triangular surface defects and three-dimensional 3C-SiC inclusions.
C1 [Maximenko, Serguei I.; Freitas, Jaime A., Jr.; Klein, Paul B.] USN, Res Lab, Washington, DC 20375 USA.
[Shrivastava, Amitesh; Sudarshan, Tangali S.] Univ S Carolina, Dept Elect Engn, Columbia, SC 29208 USA.
RP Maximenko, SI (reprint author), USN, Res Lab, Washington, DC 20375 USA.
EM maximenko@bloch.nrl.navy.mil
FU Office of Naval Research; NRL
FX The research at NRL was partially supported by the Office of Naval
Research. S. I. M. thanks the NRC program at NRL for support.
NR 21
TC 38
Z9 38
U1 4
U2 27
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 MAR 2
PY 2009
VL 94
IS 9
AR 092101
DI 10.1063/1.3089231
PG 3
WC Physics, Applied
SC Physics
GA 423VF
UT WOS:000264523100035
ER
PT J
AU Prokes, SM
Alexson, DA
Glembocki, OJ
Park, HD
Rendell, RW
AF Prokes, S. M.
Alexson, D. A.
Glembocki, O. J.
Park, H. D.
Rendell, R. W.
TI Effect of crossing geometry on the plasmonic behavior of dielectric
core/metal sheath nanowires
SO APPLIED PHYSICS LETTERS
LA English
DT Article
DE gadolinium compounds; metal-insulator boundaries; nanocomposites;
nanowires; plasmonics; plasmons; silver; surface enhanced Raman
scattering
ID ENHANCED RAMAN-SCATTERING; SILVER NANOPARTICLES; NANOSPHERE LITHOGRAPHY;
SPECTROSCOPY
AB We have shown that dielectric/metal composite nanowires exhibit very strong surface enhanced Raman spectroscopy (SERS) signals when arranged in a random three-dimensional geometry. Since the intersections of the nanowires are critical in generating the high electric fields necessary for this enhancement, we are investigating this effect under more controlled conditions. We examined nanowire arrays formed by e-beam lithography and we have examined the plasmonic effects, both longitudinal and transverse, due to changes in crossing geometry by specific placements of dielectric/metal nanowires on these arrays. Results indicate significant angular effects on the SERS enhancement supported by electric field calculations.
C1 [Prokes, S. M.; Alexson, D. A.; Glembocki, O. J.; Park, H. D.; Rendell, R. W.] USN, Res Lab, Washington, DC 20375 USA.
RP Prokes, SM (reprint author), USN, Res Lab, 4555 Overlook Ave SW, Washington, DC 20375 USA.
EM prokes@estd.nrl.navy.mil
FU DTRA
FX The authors would like to thank the Office of Naval Research and DTRA
for support.
NR 16
TC 15
Z9 15
U1 1
U2 9
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 MAR 2
PY 2009
VL 94
IS 9
AR 093105
DI 10.1063/1.3094129
PG 3
WC Physics, Applied
SC Physics
GA 423VF
UT WOS:000264523100065
ER
PT J
AU Sanchez, SM
Wan, H
Lucas, TW
AF Sanchez, Susan M.
Wan, Hong
Lucas, Thomas W.
TI Two-Phase Screening Procedure for Simulation Experiments
SO ACM TRANSACTIONS ON MODELING AND COMPUTER SIMULATION
LA English
DT Article
DE Simulation theory; experimentation; controlled sequential bifurcation
AB Analysts examining complex simulation models often conduct screening experiments to identify important factors. The controlled sequential bifurcation screening procedures CSB and CSB-X use a sequence of tests to classify factors as important or unimportant, while controlling Type I error and power. These procedures require analysts to identify the directions of the effects prior to experimentation, which can be problematic. We propose hybrid two-phase approaches, FFCSB and FFCSBX, as alternatives. Phase 1 uses an efficient fractional factorial to estimate factor effect directions; phase 2 uses CSB or CSB-X. Empirical investigations show these outperform CSB(X) in efficiency and effectiveness for many situations of practical interest.
C1 [Sanchez, Susan M.; Lucas, Thomas W.] USN, Postgrad Sch, Monterey, CA 93943 USA.
[Wan, Hong] Purdue Univ, Dept Ind Engn, W Lafayette, IN 47907 USA.
RP Sanchez, SM (reprint author), USN, Postgrad Sch, 1 Univ Circle, Monterey, CA 93943 USA.
EM ssanchez@nps.edu
FU U.S. Marine Corps; OASD-NII through the Center for Edge Power at the
Naval Postgraduate School
FX This work was supported in part by the U.S. Marine Corps' Project Albert
effort, the Modeling and Simulation Coordination Office for the Joint
Test and Evaluation Methodology project, and by OASD-NII through the
Center for Edge Power at the Naval Postgraduate School.
NR 24
TC 14
Z9 14
U1 0
U2 3
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 MAR
PY 2009
VL 19
IS 2
AR 7
DI 10.1145/1502787.1502790
PG 24
WC Computer Science, Interdisciplinary Applications; Mathematics, Applied
SC Computer Science; Mathematics
GA 456CV
UT WOS:000266818300003
ER
PT J
AU Lugini, C
Romano, M
AF Lugini, Claudio
Romano, Marcello
TI A ballistic-pendulum test stand to characterize small cold-gas thruster
nozzles
SO ACTA ASTRONAUTICA
LA English
DT Article
AB This paper deals with the design, development and experimentation of a new test stand for the accurate and precise characterization or small cold-gas nozzles having thrust of the order of 0.1 N and specific impulse of the order of 10s. As part of the presented research, a new cold-gas Supersonic nozzle was designed and developed based on the quasi one-dimensional theory. The test stand is based on the ballistic-pendulum principle: in particular, it consists or a suspended gondola hosting the propulsion system and the sample nozzle, The propulsion system consists of an air link, pressure regulator, solenoid valve, battery and digital timer to command the valve. The gondola is equipped with a fin, immersed in water, to provide torsional and lateral oscillation damping, A laser sensor measures the displacernent of the gondola. The developed test stand was calibrated by using a mathematical model based on the inelastic collision theory. The obtained accuracy was of similar to 1%. Sample experimental results are reported regarding the comparison of the new supersonic nozzle with a commercially available subsonic nozzle. The obtained measurements of thrust, mass flow rate and specific impulse are precise to a level of similar to 3%. The broad goal of the presented research was to contribute to an upgraded design of a spacecraft simulator used for laboratory validation of guidance, navigation and control algorithms for autonomous docking manoeuvres. Published by Elsevier Ltd.
C1 [Lugini, Claudio] SupAero, F-31055 Toulouse, France.
[Lugini, Claudio] Univ Roma La Sapienza, I-00161 Rome, Italy.
[Romano, Marcello] USN, Postgrad Sch, Mech & Astronaut Engn Dept, Monterey, CA 93940 USA.
[Romano, Marcello] USN, Postgrad Sch, Spare Syst Acad Grp, Monterey, CA 93940 USA.
RI Romano, Marcello/C-7972-2013
FU DARPA; Sapienza Universita di Roma and SupAero
FX This work was conducted with the financial support of DARPA. The visit
of Claudio Lugini at the Spacecraft Robotics Laboratory of Naval
Postgraduate School was partially supported by Sapienza Universita di
Roma and SupAero. The authors thank Dr. Fabio Curti for his help in
calibrating the pendulum, and Dr. Chris Brophy for his initial advice.
The authors also thank Mr. Andy Gordon of Gordon Engineering for his
carefulness in manufacturing the supersonic nozzles.
NR 12
TC 11
Z9 11
U1 2
U2 6
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0094-5765
J9 ACTA ASTRONAUT
JI Acta Astronaut.
PD MAR-APR
PY 2009
VL 64
IS 5-6
BP 615
EP 625
DI 10.1016/j.actaastro.2008.11.001
PG 11
WC Engineering, Aerospace
SC Engineering
GA 411OD
UT WOS:000263658000011
ER
PT J
AU Li, YF
Poole, S
Rasulova, F
McVeigh, AL
Savarino, SJ
Xia, D
AF Li, Yong-Fu
Poole, Steven
Rasulova, Fatima
McVeigh, Annette L.
Savarino, Stephen J.
Xia, Di
TI Crystallization and preliminary X-ray diffraction analyses of several
forms of the CfaB major subunit of enterotoxigenic Escherichia coli
CFA/I fimbriae
SO ACTA CRYSTALLOGRAPHICA SECTION F-STRUCTURAL BIOLOGY AND CRYSTALLIZATION
COMMUNICATIONS
LA English
DT Article
ID FACTOR ANTIGEN-I; COLONIZATION FACTOR; DIARRHEA; ADHESIN; ARCHITECTURE;
BIOGENESIS; RESOLUTION; PILI
AB Enterotoxigenic Escherichia coli (ETEC), a major global cause of diarrhea, initiates the pathogenic process via fimbriae-mediated attachment to the small intestinal epithelium. A common prototypic ETEC fimbria, colonization factor antigen I (CFA/I), consists of a tip-localized minor adhesive subunit CfaE and the stalk-forming major subunit CfaB, both of which are necessary for fimbrial assembly. To elucidate the structure of CFA/I at atomic resolution, three recombinant proteins were generated consisting of fusions of the minor and major subunits (CfaEB) and of two (CfaBB) and three (CfaBBB) repeats of the major subunit. Crystals of CfaEB diffracted X-rays to 2.1 angstrom resolution and displayed the symmetry of space group P2(1). CfaBB exhibited a crystal diffraction limit of 2.3 angstrom resolution and had the symmetry of space group P2(1)2(1)2. CfaBBB crystallized in the monoclinic space group C2 and diffracted X-rays to 2.3 angstrom resolution. These structures were determined using the molecular-replacement method.
C1 [Li, Yong-Fu; Xia, Di] NCI, Cell Biol Lab, Ctr Canc Res, NIH, Bethesda, MD 20892 USA.
[Poole, Steven; Rasulova, Fatima; McVeigh, Annette L.; Savarino, Stephen J.] USN, Med Res Ctr, Enter Dis Dept, Infect Dis Directorate, Silver Spring, MD 20910 USA.
[Savarino, Stephen J.] Uniformed Serv Univ Hlth Sci, Dept Pediat, Bethesda, MD 20814 USA.
RP Xia, D (reprint author), NCI, Cell Biol Lab, Ctr Canc Res, NIH, Bethesda, MD 20892 USA.
EM dixia@helix.nih.gov
FU NIH; Center for Cancer Research; Trans NIH/FDA Intramural Biodefense
Program; US Army Military Infectious Diseases Research Program [A0307];
Henry M. Jackson Foundation
FX The authors wish to thank the staff members of the SER-CAT beamline at
APS, ANL for their assistance in data collection. This research was
supported in part by the Intramural Research Program of the NIH,
National Cancer Institute, Center for Cancer Research, by a grant from
the Trans NIH/FDA Intramural Biodefense Program (to DX), by the US Army
Military Infectious Diseases Research Program Work Unit Number A0307 (to
SJS) and by the Henry M. Jackson Foundation for the Advancement of
Military Medicine (SJS). The views expressed in this article are those
of the authors and do not necessarily reflect the official position of
the Department of the Navy, Department of Defense or the US government.
NR 28
TC 4
Z9 4
U1 0
U2 1
PU WILEY-BLACKWELL PUBLISHING, INC
PI MALDEN
PA COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA
SN 1744-3091
J9 ACTA CRYSTALLOGR F
JI Acta Crystallogr. F-Struct. Biol. Cryst. Commun.
PD MAR
PY 2009
VL 65
BP 242
EP 247
DI 10.1107/S1744309109001584
PG 6
WC Biochemical Research Methods; Biochemistry & Molecular Biology;
Biophysics; Crystallography
SC Biochemistry & Molecular Biology; Biophysics; Crystallography
GA 413DN
UT WOS:000263773200012
PM 19255474
ER
PT J
AU Riley, MA
Aguilar, A
Evans, AO
Hartley, DJ
Lagergren, K
Ollier, J
Paul, ES
Pipidis, A
Simpson, J
Teal, C
Twin, PJ
Wang, X
Appelbe, DE
Campbell, DB
Carpenter, MP
Clark, RM
Cromaz, M
Darby, IG
Fallon, P
Garg, U
Janssens, RVF
Joss, DT
Kondev, FG
Lauritsen, T
Lee, IY
Lister, CJ
Macchiavelli, AO
Nolan, PJ
Petri, M
Rigby, SV
Thompson, J
Unsworth, C
Ward, D
Zhu, S
Ragnarsson, I
AF Riley, M. A.
Aguilar, A.
Evans, A. O.
Hartley, D. J.
Lagergren, K.
Ollier, J.
Paul, E. S.
Pipidis, A.
Simpson, J.
Teal, C.
Twin, P. J.
Wang, X.
Appelbe, D. E.
Campbell, D. B.
Carpenter, M. P.
Clark, R. M.
Cromaz, M.
Darby, I. G.
Fallon, P.
Garg, U.
Janssens, R. V. F.
Joss, D. T.
Kondev, F. G.
Lauritsen, T.
Lee, I. Y.
Lister, C. J.
Macchiavelli, A. O.
Nolan, P. J.
Petri, M.
Rigby, S. V.
Thompson, J.
Unsworth, C.
Ward, D.
Zhu, S.
Ragnarsson, I.
TI STRONGLY DEFORMED NUCLEAR SHAPES AT ULTRA-HIGH SPIN AND SHAPE
COEXISTENCE IN N similar to 90 NUCLEI
SO ACTA PHYSICA POLONICA B
LA English
DT Article; Proceedings Paper
CT 43rd Zakopane Conference on Nuclear Physics
CY SEP 01-07, 2008
CL Zakopane, POLAND
ID PARTICLE-HOLE EXCITATIONS; ROTATIONAL BANDS; YRAST LEVELS; ER-158;
TERMINATION; DISCONTINUITY; YB-158
AB The N similar to 90 region of the nuclear chart has featured prominently as the spectroscopy of nuclei at extreme spin has progressed. This talk will present recent discoveries from investigations of high spin behavior in the N similar to 90 Er, Tm and Yb nuclei utilizing the Gammasphere gamma-ray spectrometer. In particular it will include discussion of the beautiful shape evolution and coexistence observed in these nuclei along with the identification of a remarkable new family of band structures. The latter are very weakly populated rotational sequences with high moment of inertia that bypass the classic terminating configurations near spin 40-50 (h) over bar, marking a return to collectivity that extends discrete gamma-ray spectroscopy to well over 60 (h) over bar. Establishing the nature of the yrast states in these nuclei beyond the oblate band-termination states has been a major goal for the past two decades. Cranking calculations suggest that these new structures most likely represent stable triaxial strongly deformed bands that lie in a valley of favored shell energy in deformation and particle-number space.
C1 [Riley, M. A.; Aguilar, A.; Lagergren, K.; Pipidis, A.; Teal, C.; Wang, X.; Campbell, D. B.] Florida State Univ, Dept Phys, Tallahassee, FL 32306 USA.
[Evans, A. O.; Paul, E. S.; Twin, P. J.; Nolan, P. J.; Petri, M.; Rigby, S. V.; Thompson, J.; Unsworth, C.] Univ Liverpool, Oliver Lodge Lab, Liverpool L69 7ZE, Merseyside, England.
[Hartley, D. J.] USN Acad, Dept Phys, Annapolis, MD 21402 USA.
[Ollier, J.; Simpson, J.; Appelbe, D. E.; Joss, D. T.; Lister, C. J.] STFC, Daresbury Lab, Warrington WA4 4AD, Cheshire, England.
[Carpenter, M. P.; Janssens, R. V. F.; Kondev, F. G.; Lauritsen, T.; Zhu, S.] Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA.
[Clark, R. M.; Cromaz, M.; Fallon, P.; Lee, I. Y.; Macchiavelli, A. O.; Ward, D.] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Nucl Sci, Berkeley, CA 94720 USA.
[Darby, I. G.] Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA.
[Garg, U.] Univ Notre Dame, Dept Phys, Notre Dame, IN 46556 USA.
[Kondev, F. G.] Argonne Natl Lab, Nucl Engn Div, Argonne, IL 60439 USA.
[Ragnarsson, I.] Lund Univ, LTH, Div Math Phys, S-22100 Lund, Sweden.
RP Riley, MA (reprint author), Florida State Univ, Dept Phys, Tallahassee, FL 32306 USA.
EM mriley@physics.fsu.edu
RI Carpenter, Michael/E-4287-2015; Petri, Marina/H-4630-2016
OI Carpenter, Michael/0000-0002-3237-5734; Petri,
Marina/0000-0002-3740-6106
NR 32
TC 5
Z9 5
U1 0
U2 0
PU POLISH ACAD SCIENCES INST PHYSICS
PI WARSAW
PA AL LOTNIKOW 32-46, PL-02-668 WARSAW, POLAND
SN 0587-4254
J9 ACTA PHYS POL B
JI Acta Phys. Pol. B
PD MAR
PY 2009
VL 40
IS 3
BP 513
EP 522
PG 10
WC Physics, Multidisciplinary
SC Physics
GA 422NY
UT WOS:000264436200017
ER
PT J
AU Dudek, J
Mazurek, K
Curien, D
Dobrowolski, A
Gozdz, A
Hartley, D
Maj, A
Riedinger, L
Schunck, N
AF Dudek, J.
Mazurek, K.
Curien, D.
Dobrowolski, A.
Gozdz, A.
Hartley, D.
Maj, A.
Riedinger, L.
Schunck, N.
TI THEORY OF NUCLEAR STABILITY USING POINT GROUP SYMMETRIES: OUTLINE AND
ILLUSTRATIONS
SO ACTA PHYSICA POLONICA B
LA English
DT Article; Proceedings Paper
CT 43rd Zakopane Conference on Nuclear Physics
CY SEP 01-07, 2008
CL Zakopane, POLAND
ID SPURIOUS AVOIDED CROSSINGS; ATOMIC-NUCLEI; RULE
AB We present what we call a new theory of nuclear stability enabled by the combination of the realistic nuclear mean-field and the group theory approaches. It allows us to simplify searches for the strong quantum shell effects at nuclear shapes that result from spectral properties deduced from group theory and geometrical symmetries rather than through 'brute force numerical search'. Illustrations are presented and discussed.
C1 [Dudek, J.; Curien, D.] Univ Strasbourg, DRS, IPHC, F-67037 Strasbourg 2, France.
[Mazurek, K.; Maj, A.] PAN, H Niewodniczanski Inst Nucl Phys, PL-31342 Krakow, Poland.
[Dobrowolski, A.; Gozdz, A.] Uniwersytet Marii Curie Sklodowskiej, Zaklad Fizyki Matematycznej, PL-20031 Lublin, Poland.
[Hartley, D.] USN Acad, Dept Phys, Annapolis, MD 21402 USA.
[Riedinger, L.; Schunck, N.] Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA.
RP Dudek, J (reprint author), Univ Strasbourg, DRS, IPHC, 23 Rue Loess BP 28, F-67037 Strasbourg 2, France.
RI DUDEK, Jerzy/A-3584-2013; CURIEN, Dominique/B-6718-2013;
OI DUDEK, Jerzy/0000-0001-5864-6339; Schunck, Nicolas/0000-0002-9203-6849
NR 14
TC 4
Z9 4
U1 0
U2 2
PU POLISH ACAD SCIENCES INST PHYSICS
PI WARSAW
PA AL LOTNIKOW 32-46, PL-02-668 WARSAW, POLAND
SN 0587-4254
J9 ACTA PHYS POL B
JI Acta Phys. Pol. B
PD MAR
PY 2009
VL 40
IS 3
BP 713
EP 724
PG 12
WC Physics, Multidisciplinary
SC Physics
GA 422NY
UT WOS:000264436200048
ER
PT J
AU Paoli, L
Greenfield, VA
Charles, M
Reuter, P
AF Paoli, Letizia
Greenfield, Victoria A.
Charles, Molly
Reuter, Peter
TI The global diversion of pharmaceutical drugs
SO ADDICTION
LA English
DT Article
DE Cultivation; diversion; heroin; India; licence; opium
AB This paper explores India's role in the world illicit opiate market, particularly its role as a producer. India, a major illicit opiate consumer, is also the sole licensed exporter of raw opium: this unique status may be enabling substantial diversion to the illicit market.
Participant observation and interviews were carried out at eight different sites. Information was also drawn from all standard secondary sources and the analysis of about 180 drug-related criminal proceedings reviewed by Indian High Courts and the Supreme Court from 1985 to 2001.
Diversion from licit opium production takes place on such a large scale that India may be the third largest illicit opium producer after Afghanistan and Burma. With the possible exceptions of 2005 and 2006, 200-300 tons of India's opium may be diverted yearly. After estimating India's opiate consumption on the basis of UN-reported prevalence estimates, we find that diversion from licit production might have satisfied a quarter to more than a third of India's illicit opiate demand to 2004.
India is not only among the world's largest consumer of illicit opiates but also one of the largest illicit opium producers. In contrast to all other illicit producers, India owes the latter distinction not to blatantly illicit cultivation but to diversion from licit cultivation. India's experience suggests the difficulty of preventing substantial leakage, even in a relatively well-governed nation.
C1 [Paoli, Letizia] Katholieke Univ Leuven, Fac Law, Leuven Inst Criminol, B-3000 Leuven, Belgium.
[Greenfield, Victoria A.] USN Acad, Dept Econ, Annapolis, MD USA.
[Charles, Molly] Univ Maryland, Sch Publ Policy, College Pk, MD 20742 USA.
[Charles, Molly] Univ Maryland, Dept Criminol, College Pk, MD 20742 USA.
[Reuter, Peter] RAND Corp, Drug Policy Res Ctr, Washington, DC USA.
RP Paoli, L (reprint author), Katholieke Univ Leuven, Fac Law, Leuven Inst Criminol, Hooverpl 10-11, B-3000 Leuven, Belgium.
EM letizia.paoli@kuleuven.be
FU Netherlands Ministry of Justice and its Scientific Research and
Documentation Centre; United Kingdom Foreign and Commonwealth Office;
Smith Richardson Foundation; Max Planck Institute for Foreign and
International Criminal Law
FX The larger project on the world heroin market was funded by the
Netherlands Ministry of Justice and its Scientific Research and
Documentation Centre (known as WODC from its Dutch acronym), the United
Kingdom Foreign and Commonwealth Office, the Smith Richardson Foundation
and the Max Planck Institute for Foreign and International Criminal Law.
The views expressed in this article are entirely our own.
NR 29
TC 6
Z9 6
U1 0
U2 5
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 0965-2140
J9 ADDICTION
JI Addiction
PD MAR
PY 2009
VL 104
IS 3
BP 347
EP 354
DI 10.1111/j.1360-0443.2008.02511.x
PG 8
WC Substance Abuse; Psychiatry
SC Substance Abuse; Psychiatry
GA 404EC
UT WOS:000263132500009
PM 19207342
ER
PT J
AU Rojas, IL
Provencher, MT
Bhatia, S
Foucher, KC
Bach, BR
Romeo, AA
Wimmer, MA
Verma, NN
AF Rojas, Idubijes L.
Provencher, Matthew T.
Bhatia, Sanjeev
Foucher, Kharma C.
Bach, Bernard R., Jr.
Romeo, Anthony A.
Wimmer, Markus A.
Verma, Nikhil N.
TI Biceps Activity During Windmill Softball Pitching Injury Implications
and Comparison With Overhand Throwing
SO AMERICAN JOURNAL OF SPORTS MEDICINE
LA English
DT Article
DE biceps brachii; long head biceps; bicipital tendinitis; tendinitis;
softball; windmill pitch
ID ELECTROMYOGRAPHIC ANALYSIS; EMG ANALYSIS; SHOULDER; BIOMECHANICS;
PITCHERS; ELBOW; MECHANISMS; KINETICS
AB Background: Windmill pitching produces high forces and torques at the shoulder and elbow, making the biceps labrum complex susceptible to overuse injury. Little is known about the muscle firing patterns during a windmill pitch.
Hypothesis: Biceps muscle activity is greater during a windmill pitch than during an overhand throw.
Study Design: Descriptive laboratory study.
Methods: Seven female windmill pitchers underwent motion analysis and surface electromyography evaluation of their biceps muscles during windmill and overhand throwing. Marker motion analysis, muscle activity, and ball release were captured simultaneously. Surface electromyography trials were collected and related to the athletes' phases of pitching and throwing, identified based on predefined softball and baseball pitching mechanics.
Results: Throws were of similar velocity (24 m/s, 53 mph, P = .71), but peak biceps brachii muscle activation during the windmill pitch was significantly greater than during the overhand throw when normalized (38% vs 19% manual muscle test, P = .02). The highest muscle activity occurred at the 9-o'clock phase of the windmill pitch, during which the biceps brachii undergoes eccentric contraction. In the overhand throw, the highest level of biceps activity occurred during arm cocking.
Conclusion: In female athletes, biceps brachii activity during the windmill pitch is higher than during an overhand throw and is most active during the 9-o'clock and follow-through phases of the pitch.
Clinical Relevance: Repetitive eccentric biceps contractions may help explain the high incidence of anterior shoulder pain clinically observed in elite windmill pitchers. Injury prevention and treatment mechanisms should focus on the phases with the highest muscle activity.
C1 [Rojas, Idubijes L.; Foucher, Kharma C.; Wimmer, Markus A.] Rush Univ, Med Ctr, Dept Orthoped Surg, Chicago, IL 60612 USA.
[Provencher, Matthew T.] USN, Med Ctr, San Diego, CA 92152 USA.
RP Rojas, IL (reprint author), Rush Univ, Med Ctr, Dept Orthoped Surg, 1725 W Harrison,Ste 1063, Chicago, IL 60612 USA.
EM nverma@rushortho.com
OI Foucher, Kharma/0000-0002-7608-0313; Romeo, Anthony/0000-0003-4848-3411
NR 18
TC 22
Z9 22
U1 1
U2 23
PU SAGE PUBLICATIONS INC
PI THOUSAND OAKS
PA 2455 TELLER RD, THOUSAND OAKS, CA 91320 USA
SN 0363-5465
J9 AM J SPORT MED
JI Am. J. Sports Med.
PD MAR
PY 2009
VL 37
IS 3
BP 558
EP 565
DI 10.1177/0363546508328105
PG 8
WC Orthopedics; Sport Sciences
SC Orthopedics; Sport Sciences
GA 419KJ
UT WOS:000264218000014
PM 19174551
ER
PT J
AU Lucha, PA
AF Lucha, Paul A., Jr.
TI Reply to Letter: "Bursting Strength Evaluation in an. Experimental Model
of Incisional Hernia" (Am Surg 2007;73:722-4)
SO AMERICAN SURGEON
LA English
DT Letter
ID MESH
C1 USN, Med Ctr, Dept Surg, Portsmouth, VA 23708 USA.
RP Lucha, PA (reprint author), USN, Med Ctr, Dept Surg, 620 John Paul Jones Circle, Portsmouth, VA 23708 USA.
EM Paul.Lucha@med.navy.mil
NR 3
TC 0
Z9 0
U1 0
U2 0
PU SOUTHEASTERN SURGICAL CONGRESS
PI ATLANTA
PA 141 WEST WIEUCA RD, STE B100, ATLANTA, GA 30342 USA
SN 0003-1348
J9 AM SURGEON
JI Am. Surg.
PD MAR
PY 2009
VL 75
IS 3
BP 272
EP 272
PG 1
WC Surgery
SC Surgery
GA 416DD
UT WOS:000263984500022
PM 19350872
ER
PT J
AU Qadri, SB
Garzarella, A
Wieting, T
Wu, DH
Mahadik, NA
AF Qadri, Syed B.
Garzarella, Anthony
Wieting, Terrence
Wu, Dong Ho
Mahadik, Nadeemullah A.
TI Structural characteristics of a single-crystalline Sr0.75Ba0.25NbO3
electro-optic material
SO APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
LA English
DT Article
ID NIOBATE
AB Sr0.75Ba0.25NbO3 (SBN-75) has the tungsten-bronze structure with a tetragonal unit cell and exhibits electro-optic properties that are important for sensors. Due to its quaternary nature, its structural uniformity, integrity, and homogeneity become important for these applications. In this paper, we present high-resolution X-ray diffraction studies of the crystalline quality and lattice parameter variation across the surface of single crystals of SBN-75. Using rocking curves, topographs, and point-wise measurements of lattice parameters, we show that these crystals have a high degree of crystalline quality and microscopic homogeneity for any electro-optic application.
C1 [Qadri, Syed B.; Garzarella, Anthony; Wieting, Terrence; Wu, Dong Ho] USN, Res Lab, Washington, DC 20375 USA.
[Mahadik, Nadeemullah A.] George Mason Univ, Fairfax, VA 22030 USA.
RP Qadri, SB (reprint author), USN, Res Lab, Washington, DC 20375 USA.
EM qadri@anvil.nrl.navy.mil
RI Mahadik, Nadeemullah/C-8551-2009
NR 7
TC 0
Z9 0
U1 2
U2 4
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 0947-8396
J9 APPL PHYS A-MATER
JI Appl. Phys. A-Mater. Sci. Process.
PD MAR
PY 2009
VL 94
IS 4
BP 1011
EP 1013
DI 10.1007/s00339-008-4892-5
PG 3
WC Materials Science, Multidisciplinary; Physics, Applied
SC Materials Science; Physics
GA 403FY
UT WOS:000263069700043
ER
PT J
AU Tremblay, SE
Taylor, GB
Helmboldt, JF
Fassnacht, CD
Romani, RW
AF Tremblay, S. E.
Taylor, G. B.
Helmboldt, J. F.
Fassnacht, C. D.
Romani, R. W.
TI Identifying Compact Symmetric Objects from the VLBA Imaging and
Polarization Survey
SO ASTRONOMISCHE NACHRICHTEN
LA English
DT Article; Proceedings Paper
CT 4th Workshop on Compact Steep Spectrum and Gigahertz-Peaked Spectrum
Radio Sources
CY MAY 26-29, 2008
CL Riccione, ITALY
SP Natl Inst Astrophys, Univ Bologna
DE catalogues; galaxies: active; galaxies: jets; radio continuum: galaxies;
surveys
ID ACTIVE GALACTIC NUCLEI; RADIO-SOURCES; DATA RELEASE; SKY SURVEY;
POLARIMETRY; QUASARS; AGES
AB Compact Symmetric Objects (CSOs) are small (less than 1 kpc) radio sources which have symmetric double lobes or jets. The dominant theory for the small size of these objects is that they are young radio sources which could grow into larger radio galaxies, but the currently small population of known CSOs makes it difficult to definitively determine whether or not this is the case. While a greater number of Gigahertz peaked sources can be identified by sifting through spectral surveys, this yields none of the dynamics of the sources, and also brings Quasars into the sample, which although interesting are peaked around I Gigahertz for very different reasons. We have used the 5 GHz VLBA Imaging and Polarization Survey (VIPS) to identify 103 CSO candidates morphologically, and are following up on these sources with multifrequency VLBA observations to confirm CSO identifications and to study their dynamics. The identification of candidates from within the survey will be discussed, as well as preliminary results from the follow-up observations. (C) 2009 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
C1 [Tremblay, S. E.; Taylor, G. B.] Univ New Mexico, Dept Phys & Astron, Albuquerque, NM 87131 USA.
[Taylor, G. B.] Natl Radio Astron Observ, Socorro, NM 87801 USA.
[Helmboldt, J. F.] USN, Res Lab, Washington, DC 20375 USA.
[Fassnacht, C. D.] Univ Calif Davis, Dept Phys, Davis, CA 95616 USA.
[Romani, R. W.] Stanford Univ, Dept Phys, Stanford, CA 94305 USA.
RP Tremblay, SE (reprint author), Univ New Mexico, Dept Phys & Astron, Albuquerque, NM 87131 USA.
EM tremblay@unm.edu
RI Helmboldt, Joseph/C-8105-2012; Tremblay, Steven/C-1617-2013
NR 20
TC 6
Z9 6
U1 0
U2 2
PU WILEY-V C H VERLAG GMBH
PI WEINHEIM
PA PO BOX 10 11 61, D-69451 WEINHEIM, GERMANY
SN 0004-6337
J9 ASTRON NACHR
JI Astro. Nachr.
PD MAR
PY 2009
VL 330
IS 2-3
BP 206
EP 209
DI 10.1002/asna.200811157
PG 4
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 420RJ
UT WOS:000264306600022
ER
PT J
AU Ontiveros, V
Vourlidas, A
AF Ontiveros, Veronica
Vourlidas, Angelos
TI QUANTITATIVE MEASUREMENTS OF CORONAL MASS EJECTION-DRIVEN SHOCKS FROM
LASCO OBSERVATIONS
SO ASTROPHYSICAL JOURNAL
LA English
DT Article
DE Sun: activity; Sun: corona; Sun: coronal mass ejections (CMEs)
ID LARGE-ANGLE
AB In this paper, we demonstrate that coronal mass ejection (CME)-driven shocks can be detected in white light coronagraph images and in which properties such as the density compression ratio and shock direction can be measured. Also, their propagation direction can be deduced via simple modeling. We focused on CMEs during the ascending phase of solar cycle 23 when the large-scale morphology of the corona was simple. We selected events which were good candidates to drive a shock due to their high speeds (V > 1500 km s(-1)). The final list includes 15 CMEs. For each event, we calibrated the LASCO data, constructed excess mass images, and searched for indications of faint and relatively sharp fronts ahead of the bright CME front. We found such signatures in 86% (13/15) of the events and measured the upstream/downstream densities to estimate the shock strength. Our values are in agreement with theoretical expectations and show good correlations with the CME kinetic energy and momentum. Finally, we used a simple forward modeling technique to estimate the three-dimensional shape and orientation of the white light shock features. We found excellent agreement with the observed density profiles and the locations of the CME source regions. Our results strongly suggest that the observed brightness enhancements result from density enhancements due to a bow-shock structure driven by the CME.
C1 [Ontiveros, Veronica] Univ Nacl Autonoma Mexico, Inst Geofis, Mexico City 04510, DF, Mexico.
[Vourlidas, Angelos] USN, Res Lab, Washington, DC 20375 USA.
RP Ontiveros, V (reprint author), Univ Nacl Autonoma Mexico, Inst Geofis, Mexico City 04510, DF, Mexico.
EM vontiver@gmu.edu; vourlidas@nrl.navy.mil
RI Vourlidas, Angelos/C-8231-2009
OI Vourlidas, Angelos/0000-0002-8164-5948
FU LWS TRT [NNH06AD851]
FX We thank R. A. Howard for his editorial help and valuable comments,
which have improved the text considerably, A. F. Thernisien for his
generous help with the SCR software, and the anonymous referee for
his/her careful reading and suggestions. This work is funded by the LWS
TR&T grant NNH06AD851. The CME catalog is generated and maintained by
NASA and The Catholic University of America in cooperation with the
Naval Research Laboratory. SOHO is a project of international
cooperation between ESA and NASA.
NR 15
TC 92
Z9 92
U1 0
U2 3
PU IOP PUBLISHING LTD
PI BRISTOL
PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND
SN 0004-637X
J9 ASTROPHYS J
JI Astrophys. J.
PD MAR 1
PY 2009
VL 693
IS 1
BP 267
EP 275
DI 10.1088/0004-637X/693/1/267
PG 9
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 414ZE
UT WOS:000263903300020
ER
PT J
AU Muno, MP
Bauer, FE
Baganoff, FK
Bandyopadhyay, RM
Bower, GC
Brandt, WN
Broos, PS
Cotera, A
Eikenberry, SS
Garmire, GP
Hyman, SD
Kassim, NE
Lang, CC
Lazio, TJW
Law, C
Mauerhan, JC
Morris, MR
Nagata, T
Nishiyama, S
Park, S
Ramirez, SV
Stolovy, SR
Wijnands, R
Wang, QD
Wang, Z
Yusef-Zadeh, F
AF Muno, M. P.
Bauer, F. E.
Baganoff, F. K.
Bandyopadhyay, R. M.
Bower, G. C.
Brandt, W. N.
Broos, P. S.
Cotera, A.
Eikenberry, S. S.
Garmire, G. P.
Hyman, S. D.
Kassim, N. E.
Lang, C. C.
Lazio, T. J. W.
Law, C.
Mauerhan, J. C.
Morris, M. R.
Nagata, T.
Nishiyama, S.
Park, S.
Ramirez, S. V.
Stolovy, S. R.
Wijnands, R.
Wang, Q. D.
Wang, Z.
Yusef-Zadeh, F.
TI A CATALOG OF X-RAY POINT SOURCES FROM TWO MEGASECONDS OF CHANDRA
OBSERVATIONS OF THE GALACTIC CENTER
SO ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES
LA English
DT Article
DE Galaxy: center; X-rays: stars
ID ALL-SKY SURVEY; TIME-SERIES ANALYSIS; FIELD NORTH SURVEY; CENTER REGION;
STAR-FORMATION; XMM-NEWTON; CATACLYSMIC VARIABLES; STELLAR CLUSTERS;
LINE DIAGNOSTICS; 4TH EDITION
AB We present a catalog of 9017 X-ray sources identified in Chandra observations of a 2 degrees x 0 degrees.8 field around the Galactic center. This enlarges the number of known X-ray sources in the region by a factor of 2.5. The catalog incorporates all of the ACIS-I observations as of 2007 August, which total 2.25 Ms of exposure. At the distance to the Galactic center ( 8 kpc), we are sensitive to sources with luminosities of 4 x 10(32) erg s(-1) (0.5-8.0 keV; 90% confidence) over an area of 1 deg(2), and up to an order of magnitude more sensitive in the deepest exposure (1.0Ms) around Sgr A*. The positions of 60% of our sources are accurate to <1 '' (95% confidence), and 20% have positions accurate to < 0 ''.5. We search for variable sources, and find that 3% exhibit flux variations within an observation, and 10% exhibit variations from observation-to-observation. We also find one source, CXOUGC J174622.7-285218, with a periodic 1745 s signal (1.4% chance probability), which is probably a magnetically accreting cataclysmic variable. We compare the spatial distribution of X-ray sources to a model for the stellar distribution, and find 2.8 sigma evidence for excesses in the numbers of X-ray sources in the region of recent star formation encompassed by the Arches, Quintuplet, and Galactic center star clusters. These excess sources are also seen in the luminosity distribution of the X-ray sources, which is flatter near the Arches and Quintuplet than elsewhere in the field. These excess point sources, along with a similar longitudinal asymmetry in the distribution of diffuse iron emission that has been reported by other authors, probably have their origin in the young stars that are prominent at l approximate to 0 ''.1.
C1 [Muno, M. P.] CALTECH, Space Radiat Lab, Pasadena, CA 91104 USA.
[Bauer, F. E.] Columbia Astrophys Lab, New York, NY 10027 USA.
[Baganoff, F. K.] MIT, Kavli Inst Astrophys & Space Res, Cambridge, MA 02139 USA.
[Bandyopadhyay, R. M.; Eikenberry, S. S.] Univ Florida, Dept Astron, Gainesville, FL 32611 USA.
[Bower, G. C.] Univ Calif Berkeley, Dept Astron, Berkeley, CA 94720 USA.
[Bower, G. C.] Univ Calif Berkeley, Radio Astron Lab, Berkeley, CA 94720 USA.
[Brandt, W. N.; Broos, P. S.; Garmire, G. P.; Park, S.] Penn State Univ, Dept Astron & Astrophys, University Pk, PA 16802 USA.
[Mauerhan, J. C.] SETI Inst, Mountain View, CA 94043 USA.
[Hyman, S. D.] Sweet Briar Coll, Dept Phys & Engn, Sweet Briar, VA 24595 USA.
[Kassim, N. E.; Lazio, T. J. W.] Naval Res Lab, Remote Sensing Div, Washington, DC 20375 USA.
[Lang, C. C.] Univ Iowa, Dept Phys & Astron, Iowa City, IA 52242 USA.
[Law, C.; Wijnands, R.] Univ Amsterdam, Astron Inst Anton Pannekoek, NL-1098 SJ Amsterdam, Netherlands.
[Mauerhan, J. C.; Morris, M. R.] Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA 90095 USA.
[Nagata, T.] Kyoto Univ, Dept Astron, Kyoto 6068502, Japan.
[Nishiyama, S.] Natl Inst Nat Sci, Natl Astron Observ Japan, Tokyo 1818588, Japan.
[Ramirez, S. V.; Stolovy, S. R.] CALTECH, Spitzer Sci Ctr, Pasadena, CA 91125 USA.
[Wang, Q. D.] Univ Massachusetts, Dept Astron, Amherst, MA 01003 USA.
[Wang, Z.] McGill Univ, Dept Phys, Montreal, PQ H3A 2T8, Canada.
[Yusef-Zadeh, F.] Northwestern Univ, Dept Phys & Astron, Evanston, IL 60208 USA.
RP Muno, MP (reprint author), CALTECH, Space Radiat Lab, Pasadena, CA 91104 USA.
EM mmuno@srl.caltech.edu; feb@astro.columbia.edu
RI Brandt, William/N-2844-2015
OI Brandt, William/0000-0002-0167-2453
FU NASA [G06-7135]; National Aeronautics Space Administration [NAS8-03060]
FX M.P.M., R.M.B., W.N.B., G.C.B., P.S.B., A.C., S.D.H., J.C.M., Q.D. W.,
Z.W., and F.Y.Z. received support from NASA through Chandra Award Number
G06-7135 issued by the Chandra X-ray Observatory Center, which is
operated by the Smithsonian Astrophsyical Observatory for and on behalf
of the National Aeronautics Space Administration under contract
NAS8-03060. T.J.W.L. and N.E.K. received funding for basic research in
astronomy at the Naval Research Laboratory, which is supported by 6.1
base funding.
NR 83
TC 86
Z9 86
U1 0
U2 1
PU IOP PUBLISHING LTD
PI BRISTOL
PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND
SN 0067-0049
J9 ASTROPHYS J SUPPL S
JI Astrophys. J. Suppl. Ser.
PD MAR
PY 2009
VL 181
IS 1
BP 110
EP 128
DI 10.1088/0067-0049/181/1/110
PG 19
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 415CR
UT WOS:000263912400004
ER
PT J
AU Landi, E
Bhatia, AK
AF Landi, E.
Bhatia, A. K.
TI Atomic data and spectral line intensities for Ca XVII
SO ATOMIC DATA AND NUCLEAR DATA TABLES
LA English
DT Article
ID BE-LIKE IONS; BERYLLIUM ISOELECTRONIC SEQUENCE; HIGHLY IONIZED CALCIUM;
COLLISION STRENGTHS; OSCILLATOR-STRENGTHS; RATE COEFFICIENTS;
CROSS-SECTIONS; EMISSION-LINES; TRANSITIONS; NI
AB Electron impact collision strengths, energy levels, oscillator strengths, and spontaneous radiative decay rates are calculated for Ca XVII. The configurations used are 2s(2), 2s2p, 2p(2), 2131', 2141' and 2s51', with I s, p, and I' = s, p, d giving rise to 92 fine-structure levels in intermediate coupling. Collision strengths are calculated at seven incident energies (15, 30. 75, 112.5, 150, 187.5 and 225 Ry) for the transitions within the three lowest configurations corresponding to the 10 lowest energy levels, and at five incident energies (75, 112.5, 150, 187.5 and 225 Ry) for transitions between the lowest five levels and the n = 3,4, 5 configurations, Calculations have been carried out using the distorted wave approximation. Excitation rate coefficients are calculated as a function of electron temperature by assuming a Maxwellian electron velocity distribution. Using the excitation rate coefficients and the radiative transition rates of the present work, and R-Matrix results for the 2s(2), 2s2p, 2p2 configurations available in the literature, statistical equilibrium equations for level populations are solved at electron densities covering the range of 10(11)-10(14) Cm(-3) at an electron temperature of log T(e)(K) = 6.7, corresponding to the maximum abundance of Ca XVII. Spectral line intensities are calculated, and their diagnostic relevance is discussed. This dataset will be made available in the next version of the CHIANTI database. (C) 2008 Elsevier Inc. All rights reserved.
C1 [Landi, E.] USN, Res Lab, Washington, DC 20375 USA.
[Landi, E.] ARTEP Inc, Columbia, MD 21044 USA.
[Bhatia, A. K.] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA.
RP Landi, E (reprint author), USN, Res Lab, Washington, DC 20375 USA.
EM landi@poppeo.nrl.navy.mil
RI Landi, Enrico/H-4493-2011
FU Enrico Landi [NNH06CD24C, NNG04ED07P]; NASA
FX The work of Enrico Landi is supported by the NNH06CD24C, NNG04ED07P, and
other NASA grants. Calculations were carried out using Discover computer
of the NASA Center for Computation Science. We warmly thank the referee
for Valuable comments and suggestions.
NR 33
TC 3
Z9 3
U1 0
U2 1
PU ACADEMIC PRESS INC ELSEVIER SCIENCE
PI SAN DIEGO
PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA
SN 0092-640X
J9 ATOM DATA NUCL DATA
JI Atom. Data Nucl. Data Tables
PD MAR
PY 2009
VL 95
IS 2
BP 155
EP 183
DI 10.1016/j.adt.2008.10.003
PG 29
WC Physics, Atomic, Molecular & Chemical; Physics, Nuclear
SC Physics
GA 418SL
UT WOS:000264168900003
ER
PT J
AU Knaff, JA
Sampson, CR
AF Knaff, John A.
Sampson, Charles R.
TI Southern hemisphere tropical cyclone intensity forecast methods used at
the Joint Typhoon Warning Center, Part I: control forecasts based on
climatology and persistence
SO AUSTRALIAN METEOROLOGICAL AND OCEANOGRAPHIC JOURNAL
LA English
DT Article
ID SYSTEM
AB The development of a simple statistical tropical cyclone (TC) intensity forecast model is described. The primary purpose of this model, called southern hemisphere five-day statistical typhoon intensity forecast scheme (SH ST5D), is to provide a skill/no-skill control forecast for verifying other TC intensity forecasts. However, it also provides useful and always-available forecasts of TC intensity in the southern hemisphere. The model is created by fitting an optimal combination of factors related to climatology and persistence (or CLIPER) using multiple linear regression. These CLIPER factors are determined from the best track tropical cyclone dataset produced by the United States of America's Joint Typhoon Warning Center (JTWC) in the years 1980-2002. In 2004 the SH ST5D) model became part of the operational suite of tropical cyclone intensity guidance run at JTWC. The forecasts from the model since that time have outperformed both climatology (i.e. a constant 65 knots or 33 ms(-1) forecast) and the persistence of initial conditions in a statistically significant manner in independent testing during 2004-2007. This documentation is provided to promote the use of this model's output and provide adequate background for the development of similar models.
C1 [Knaff, John A.] Colorado State Univ, NOAA, NESDIS, CIRA,Ctr Satellite Res & Applicat, Ft Collins, CO 80523 USA.
[Sampson, Charles R.] Naval Res Lab, Monterey, CA USA.
RP Knaff, JA (reprint author), Colorado State Univ, NOAA, NESDIS, CIRA,Ctr Satellite Res & Applicat, Campus Delivery 1375, Ft Collins, CO 80523 USA.
EM John.Knaff@noaa.gov
RI Knaff, John /F-5599-2010; Sampson, Charles/F-5684-2010
OI Knaff, John /0000-0003-0427-1409;
FU ONR; NOAA [NA17RJ1228]
FX This research was supported by ONR and NOAA (NA17RJ1228) grants. The
authors thank the reviewers, Noel Davidson and Joe Courtney, as well as
Andrea Schumacher and Dan Lindsey for their constructive comments on
this paper. The views, opinions, and findings contained in this report
are those of the authors and should not be construed as an official
National Oceanic and Atmospheric Administration or U.S. Government
position, policy, or decision.
NR 28
TC 3
Z9 3
U1 1
U2 7
PU AUSTRALIAN BUREAU METEOROLOGY
PI MELBOURNE
PA GPO BOX 1289, MELBOURNE, VIC 3001, AUSTRALIA
SN 1836-716X
J9 AUST METEOROL OCEAN
JI Aust. Meteorol. Oceanogr. J.
PD MAR
PY 2009
VL 58
IS 1
BP 1
EP 7
PG 7
WC Meteorology & Atmospheric Sciences; Oceanography
SC Meteorology & Atmospheric Sciences; Oceanography
GA 483IF
UT WOS:000268956100002
ER
PT J
AU Knaff, JA
Sampson, CR
AF Knaff, John A.
Sampson, Charles R.
TI Southern hemisphere tropical cyclone intensity forecast methods used at
the Joint Typhoon Warning Center, Part II: statistical - dynamical
forecasts
SO AUSTRALIAN METEOROLOGICAL AND OCEANOGRAPHIC JOURNAL
LA English
DT Article
ID SIZE ESTIMATION ALGORITHMS; PREDICTION SCHEME SHIPS; SEA-SURFACE
TEMPERATURE; MAXIMUM INTENSITY; NORTH PACIFIC; OBJECTIVE SCHEME;
HURRICANES; ATLANTIC; OCEAN; SHEAR
AB The development and performance of a statistical - dynamical tropical cyclone intensity forecast model, which was developed for the United States of America's Joint Typhoon Warning Center (JTWC), is described. This model, called the Southern Hemisphere Statistical Typhoon Intensity Prediction Scheme (SH STIPS), mirrors similar capabilities created for use in the western North Pacific and North Indian Ocean tropical cyclone basins. The model is created by fitting an optimal combination of factors related to climatology and persistence, intensification potential, vertical wind shear, dynamic size/intensity forecasts and atmospheric stability. All of these factors except the climatology and persistence information are derived from global forecast model analyses and forecasts. In July 2005 the SH STIPS model began a real-time evaluation period. The forecasts from the SH STIPS model have outperformed the combined climatology and persistence based forecast and thus are skillful in independent testing since that time. Since October 2006, SH STIPS has been the primary member in an operational consensus forecast of tropical cyclone intensity change provided to the JTWC. Documentation is provided for potential users of forecasts based on this methodology and for researchers interested in developing similar capabilities in the future.
C1 [Knaff, John A.] Colorado State Univ, NOAA, NESDIS, CIRA,Ctr Satellite Res & Applicat, Ft Collins, CO 80523 USA.
[Sampson, Charles R.] Naval Res Lab, Monterey, CA USA.
RP Knaff, JA (reprint author), Colorado State Univ, NOAA, NESDIS, CIRA,Ctr Satellite Res & Applicat, Campus Delivery 1375, Ft Collins, CO 80523 USA.
EM John.Knaff@noaa.gov
RI Knaff, John /F-5599-2010; Sampson, Charles/F-5684-2010
OI Knaff, John /0000-0003-0427-1409;
FU ONR; NOAA [NA17RJ1228]
FX This research was supported by ONR and NOAA (NA17RJ1228) grants. The
authors would like to thank the reviewers Andrew Burton and Noel
Davidson for their constructive comments. The views, opinions, and
findings contained in this report are those of the authors and should
not be construed as an official National Oceanic and Atmospheric
Administration or U.S. Government position, policy or decision.
NR 45
TC 7
Z9 7
U1 0
U2 2
PU AUSTRALIAN BUREAU METEOROLOGY
PI MELBOURNE
PA GPO BOX 1289, MELBOURNE, VIC 3001, AUSTRALIA
SN 1836-716X
J9 AUST METEOROL OCEAN
JI Aust. Meteorol. Oceanogr. J.
PD MAR
PY 2009
VL 58
IS 1
BP 9
EP 18
PG 10
WC Meteorology & Atmospheric Sciences; Oceanography
SC Meteorology & Atmospheric Sciences; Oceanography
GA 483IF
UT WOS:000268956100003
ER
PT J
AU Sampson, CR
Knaff, JA
AF Sampson, Charles R.
Knaff, John A.
TI Southern hemisphere tropical cyclone intensity forecast methods used at
the Joint Typhoon Warning Center, Part III: forecasts based on a
multi-model consensus approach
SO AUSTRALIAN METEOROLOGICAL AND OCEANOGRAPHIC JOURNAL
LA English
DT Article
ID WESTERN NORTH PACIFIC; PREDICTION; SYSTEM
AB Consensus forecasts aids, those derived from forecasts from several models, and ensemble forecasts aids, those derived from several forecast created by a single model, have become commonplace. Consensus forecast aids are now an integral part of operational tropical cyclone forecasting at the Joint Typhoon Warning Center (JTWC). These consensus aids generally have lower average errors than individual forecast aids and benefit from the skill and independence of their members. This paper discusses the performance of one ensemble forecast aid and one consensus forecast aid run in real-time and made available to JTWC during the 2007 and 2008 southern hemisphere tropical cyclone seasons. The ensemble Forecast aid is shown to be as skillful as the top performing ensemble member at each forecast time. The consensus forecast aid is shown to be the most skillful aid available to JTWC during the 2007 and 2008 seasons. Further experiments indicate that adding more forecast aids to the intensity consensus may marginally improve both skill and forecast availability of the consensus forecast aid.
C1 [Sampson, Charles R.] Naval Res Lab, Monterey, CA 93943 USA.
[Knaff, John A.] Ctr Satellite Res & Applicat, NOAA, NESDIS, Ft Collins, CO USA.
RP Sampson, CR (reprint author), Naval Res Lab, 7 Grace Hopper Ave,Stop 2, Monterey, CA 93943 USA.
EM sampson@nrlmry.navy.mil
RI Knaff, John /F-5599-2010; Sampson, Charles/F-5684-2010
OI Knaff, John /0000-0003-0427-1409;
NR 28
TC 3
Z9 3
U1 0
U2 4
PU AUSTRALIAN BUREAU METEOROLOGY
PI MELBOURNE
PA GPO BOX 1289, MELBOURNE, VIC 3001, AUSTRALIA
SN 1836-716X
J9 AUST METEOROL OCEAN
JI Aust. Meteorol. Oceanogr. J.
PD MAR
PY 2009
VL 58
IS 1
BP 19
EP 27
PG 9
WC Meteorology & Atmospheric Sciences; Oceanography
SC Meteorology & Atmospheric Sciences; Oceanography
GA 483IF
UT WOS:000268956100004
ER
PT J
AU Parnell, GS
Borio, LL
Cox, LA
Brown, GG
Pollock, S
Wilson, AG
AF Parnell, Gregory S.
Borio, Luciana L.
Cox, Louis A. (Tony)
Brown, Gerald G.
Pollock, Stephen
Wilson, Alyson G.
TI PROBABILISTIC RISK ANALYSIS AND BIOTERRORISM RISK RESPONSE
SO BIOSECURITY AND BIOTERRORISM-BIODEFENSE STRATEGY PRACTICE AND SCIENCE
LA English
DT Editorial Material
C1 [Parnell, Gregory S.] US Mil Acad, Dept Syst Engn, West Point, NY 10996 USA.
[Borio, Luciana L.] Johns Hopkins Univ, Baltimore, MD USA.
[Cox, Louis A. (Tony)] Cox Associates, Denver, CO USA.
[Cox, Louis A. (Tony)] Univ Colorado, Hlth Sci Ctr, Denver, CO USA.
[Brown, Gerald G.] USN, Postgrad Sch, Dept Operat Res, Monterey, CA USA.
[Pollock, Stephen] Univ Michigan, Dept Ind & Operat Engn, Ann Arbor, MI 48109 USA.
[Wilson, Alyson G.] Iowa State Univ, Dept Stat, Ames, IA USA.
RP Parnell, GS (reprint author), US Mil Acad, Dept Syst Engn, West Point, NY 10996 USA.
EM gregory.parnell@usma.edu
NR 9
TC 2
Z9 2
U1 0
U2 2
PU MARY ANN LIEBERT, INC
PI NEW ROCHELLE
PA 140 HUGUENOT STREET, 3RD FL, NEW ROCHELLE, NY 10801 USA
SN 1538-7135
EI 1557-850X
J9 BIOSECUR BIOTERROR
JI Biosecur. Bioterror.
PD MAR
PY 2009
VL 7
IS 1
BP 111
EP 112
DI 10.1089/bsp.2009.0927
PG 2
WC Public, Environmental & Occupational Health; International Relations
SC Public, Environmental & Occupational Health; International Relations
GA 434ZA
UT WOS:000265311600011
ER
PT J
AU Minnikanti, S
Skeath, P
Peixoto, N
AF Minnikanti, Saugandhika
Skeath, Perry
Peixoto, Nathalia
TI Electrochemical characterization of multi-walled carbon nanotube coated
electrodes for biological applications
SO CARBON
LA English
DT Article
ID ELECTROPHORETIC DEPOSITION EPD; SILICON MICROELECTRODE ARRAYS; DEEP
BRAIN-STIMULATION; IN-VITRO; CEREBRAL-CORTEX; TISSUE; FIELD; RECORDINGS;
METAL; FILMS
AB Carbon nanotubes, if used as a coating film on a conductive substrate, can substantially raise the charge storage capacity and lower the impedance of electrodes without significant increases to the geometric area. This is especially interesting in the case of stimulation of nervous tissue. We design implantable electrodes targeted at wide frequency stimulation of deep brain structures. Here we report on results in vitro with multi-walled carbon nanotubes coatings applied onto stainless steel substrates using direct current electrophoresis. We experimentally demonstrate, through electrochemical techniques such as cyclic voltammetry and impedance spectroscopy, the enhanced performance of multi-walled carbon nanotube (MWCNT) coatings for implantable electrodes by contrasting our experimental results against the more traditional stainless steel substrate characteristics. We also investigate surface morphology of aged electrodes. The interest in aged electrodes is dual fold: implantable electrodes have to be mechanically stable and present high shelf life. on the other hand, chemical modifications of the surface should be characterized. The effect of superficial oxygen adsorption on the aged MWCNT electrodes is observed through a modified cyclic voltammetric spectrum, but not through any changes in impedance spectroscopy. (C) 2008 Elsevier Ltd. All rights reserved.
C1 [Minnikanti, Saugandhika; Peixoto, Nathalia] George Mason Univ, Neural Engn Lab, Dept Elect & Comp Engn, Volgenau Sch Informat Technol & Engn, Fairfax, VA 22030 USA.
[Skeath, Perry] USN, Res Lab, Div Opt Sci, Washington, DC 20375 USA.
RP Peixoto, N (reprint author), George Mason Univ, Neural Engn Lab, Dept Elect & Comp Engn, Volgenau Sch Informat Technol & Engn, Fairfax, VA 22030 USA.
EM npeixoto@gmu.edu
FU Volgenau School for Information Technology and Engineering; George Mason
University
FX This project was supported by the Volgenau School for Information
Technology and Engineering, George Mason University.
NR 66
TC 38
Z9 38
U1 1
U2 13
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0008-6223
EI 1873-3891
J9 CARBON
JI Carbon
PD MAR
PY 2009
VL 47
IS 3
BP 884
EP 893
DI 10.1016/j.carbon.2008.11.045
PG 10
WC Chemistry, Physical; Materials Science, Multidisciplinary
SC Chemistry; Materials Science
GA 411BS
UT WOS:000263623400043
ER
PT J
AU Denning, PJ
Riehle, RD
AF Denning, Peter J.
Riehle, Richard D.
TI The Profession of IT Is Software Engineering Engineering?
SO COMMUNICATIONS OF THE ACM
LA English
DT Editorial Material
C1 [Denning, Peter J.] USN, Postgrad Sch, Cebrowski Inst Informat Innovat & Super, Monterey, CA USA.
RP Denning, PJ (reprint author), USN, Postgrad Sch, Cebrowski Inst Informat Innovat & Super, Monterey, CA USA.
EM pjd@nps.edu; rdriehle@nps.edu
NR 8
TC 5
Z9 6
U1 0
U2 0
PU ASSOC COMPUTING MACHINERY
PI NEW YORK
PA 2 PENN PLAZA, STE 701, NEW YORK, NY 10121-0701 USA
SN 0001-0782
J9 COMMUN ACM
JI Commun. ACM
PD MAR
PY 2009
VL 52
IS 3
BP 24
EP 26
DI 10.1145/1467247.1467257
PG 3
WC Computer Science, Hardware & Architecture; Computer Science, Software
Engineering; Computer Science, Theory & Methods
SC Computer Science
GA 424MT
UT WOS:000264571500019
ER
PT J
AU El Sayed, T
Mock, W
Mota, A
Fraternali, F
Ortiz, M
AF El Sayed, Tamer
Mock, Willis, Jr.
Mota, Alejandro
Fraternali, Fernando
Ortiz, Michael
TI Computational assessment of ballistic impact on a high strength
structural steel/polyurea composite plate
SO COMPUTATIONAL MECHANICS
LA English
DT Article
DE Ballistic; Polyurea; Projectile; Composite; Viscoelastic; Porous
plasticity; Strain localization
ID VARIATIONAL CONSTITUTIVE MODEL; PERFORMANCE; ELEMENTS; FORMULATION;
ARMORS
AB Ballistic impact on a polyurea retrofitted high strength structural steel plate is simulated and validated. A soft material model for polyurea, which is capable of capturing complex mechanical behavior characterized by large strains, hysteresis, rate sensitivity, stress softening (Mullins effect), and deviatoric and volumetric plasticity, is calibrated against several uniaxial tension experiments and a three-dimensional release wave experiment to capture both the material point and bulk behaviors. A porous plasticity model is employed to model the high strength structural steel and localization elements are included to capture adiabatic shear bands and strain localization. The computational capabilities of these models are demonstrated by the prediction of the target plate displacement, which shows excellent agreement with experiments.
C1 [El Sayed, Tamer; Mota, Alejandro; Ortiz, Michael] CALTECH, Div Engn & Appl Sci, Pasadena, CA 91125 USA.
[Mock, Willis, Jr.] USN, Ctr Surface Warfare, Dahlgren Div, Dahlgren, VA 22448 USA.
[Fraternali, Fernando] Univ Salerno, Dept Civil Engn, I-84084 Fisciano, SA, Italy.
RP Ortiz, M (reprint author), CALTECH, Div Engn & Appl Sci, Pasadena, CA 91125 USA.
EM tamer@caltech.edu; ortiz@aero.caltech.edu
OI Fraternali, Fernando/0000-0002-7549-6405
FU Office of Naval Research (ONR) [N00014-04-1-0359]
FX The authors would like to thank the Office of Naval Research (ONR) for
their invaluable support via grant number N00014-04-1-0359. The authors
would also like to thank Professor R.J. Clifton and Tong Jiao from Brown
University for providing the release-wave experimental data and C. M.
Roland from the Naval Research Laboratory in Washington D.C. for
providing the polyurea tension experimental data. Also acknowledged are
Philip Dudt and Gilbert Lee of the Naval Surface Warfare Center,
Carderock Division for providing funds for the impact experiment and
Jeffry Fedderly of the Carderock Division for providing the
steel/polyurea target.
NR 19
TC 17
Z9 17
U1 2
U2 19
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 0178-7675
J9 COMPUT MECH
JI Comput. Mech.
PD MAR
PY 2009
VL 43
IS 4
BP 525
EP 534
DI 10.1007/s00466-008-0327-6
PG 10
WC Mathematics, Interdisciplinary Applications; Mechanics
SC Mathematics; Mechanics
GA 403CL
UT WOS:000263059500007
ER
PT J
AU Jangveladze, T
Kiguradze, Z
Neta, B
AF Jangveladze, Temur
Kiguradze, Zurab
Neta, Beny
TI Large time behavior of solutions and finite difference scheme to a
nonlinear integro-differential equation
SO COMPUTERS & MATHEMATICS WITH APPLICATIONS
LA English
DT Article
DE Nonlinear integro-differential equation; Asymptotic behavior;
Semidiscrete and finite difference schemes
ID EXISTENCE
AB The large-time behavior of solutions and finite difference approximations of the nonlinear integro-differential equation associated with the penetration of a magnetic field into a substance are studied. Asymptotic properties of solutions for the initial-boundary value problem with homogeneous Dirichlet boundary conditions is considered. The rates of convergence are given too. The convergence of the semidiscrete and the finite difference schemes are also proved. Published by Elsevier Ltd
C1 [Neta, Beny] USN, Postgrad Sch, Dept Appl Math, Monterey, CA 93943 USA.
[Jangveladze, Temur; Kiguradze, Zurab] Ivane Javakhishvili Tbilisi State Univ, Fac Exact & Nat Sci, GE-0186 Tbilisi, Rep of Georgia.
[Jangveladze, Temur; Kiguradze, Zurab] Ilia Chavchavadze State Univ, Fac Math & Phys, GE-0179 Tbilisi, Rep of Georgia.
RP Neta, B (reprint author), USN, Postgrad Sch, Dept Appl Math, Monterey, CA 93943 USA.
EM byneta@gmail.com
RI Neta, Beny/B-1737-2009
NR 29
TC 11
Z9 11
U1 0
U2 2
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0898-1221
J9 COMPUT MATH APPL
JI Comput. Math. Appl.
PD MAR
PY 2009
VL 57
IS 5
BP 799
EP 811
DI 10.1016/j.camwa.2008.09.055
PG 13
WC Mathematics, Applied
SC Mathematics
GA 412EY
UT WOS:000263708000012
ER
PT J
AU Holland, KT
Vinzon, SB
Calliari, LJ
AF Holland, K. Todd
Vinzon, Susana B.
Calliari, Lauro J.
TI A field study of coastal dynamics on a muddy coast offshore of Cassino
beach, Brazil
SO CONTINENTAL SHELF RESEARCH
LA English
DT Article
DE Muddy coasts; Lutocline; Wave attenuation; Rheology; Nearshore
instrumentation
ID WAVES
AB Mud deposits near sandy beaches, found throughout the world, are of scientific and societal interest as they form important natural sea defenses by efficiently damping storm waves. A multi-national field experiment to study these phenomena was performed offshore Cassino beach in southern Brazil starting in 2004. This experiment aimed to investigate the formation of an offshore mud deposit, to characterize wave attenuation over potentially mobile muddy bottoms, and to evaluate the performance of models for wave transformation over heterogeneous beds through the measurement of water waves, near-bottom currents, bathymetry, and changes in bottom sediment characteristics. The main instrumentation was a set of wave sensors deployed in a transect from the shoreline across sandy and muddy deposits offshore to a depth of 25 in. Additional sensors, including current meters and optical backscatter sensors. were concentrated at stations in the middle of the mud deposit and in the surf zone to document aspects of the wave boundary layer and lutocline dynamics. This fieldwork also involved the geological and geotechnical characterization of the mud deposit using seismic equipment, echo-sounders, cores, surficial sampling and an in-situ density meter. These sediment samples were subsequently analyzed for density, grain size distribution, mineralogy, rheology and sedimentary structures. In addition, video and radar monitoring equipment were installed to measure the long-term aspects of surf zone damping by fluid mud and any associated morphodynamic responses. This paper provides a summary of environmental conditions monitored during the experiment and describes the major findings of the various investigations. Although data collection was more difficult than anticipated and dramatic wave attenuation involving the onshore transport of fluid mud into the surf zone region was not observed during the instrumented interval, the new methodologies developed and comprehensive observations obtained during this effort are being used to improve our understanding of shoaling wave dynamics and sediment transport in the coastal zone in regions with significant cohesive sediment deposits. (C) 2009 Elsevier Ltd. All rights reserved.
C1 [Holland, K. Todd] USN, Res Lab, Stennis Space Ctr, MS 39529 USA.
[Vinzon, Susana B.] Univ Fed Rio de Janeiro, Ocean Engn Program, BR-21941 Rio De Janeiro, Brazil.
[Calliari, Lauro J.] Fundacao Univ Fed Rio Grande, Rio Grande, Brazil.
RP Holland, KT (reprint author), USN, Res Lab, Stennis Space Ctr, MS 39529 USA.
EM tholland@nrlssc.navy.mil; susana@peno.coppe.ufrj.br;
Icalliari@log.furg.br
RI Holland, K. Todd/A-7673-2011
OI Holland, K. Todd/0000-0002-4601-6097
FU Office of Naval Research [0601153N, N00173-04-1-G901, N00014-04-1-0274]
FX Large portions of the experiment and the preparation of this manuscript
was funded by the Office of Naval Research through base funding to the
Naval Research Laboratory (PE #0601153N) and through Grants
(N00173-04-1-G901 and N00014-04-1-0274) administered through the ONR
International Field Office. We specifically acknowledge the hard work
and useful insights of project investigators, students, and
collaborators as listed: Federal University of Rio de Janeiro
(UFRJ)/Laboratory for Dynamics of Cohesive Sediments [Raphael Miguez
Nogueira, Carla D'Aquinol, University Foundation of Rio Grande
(FURG)/Geological Oceanography Laboratory [Pedro de Souza Pereira,
Rafael Guedes, Elisa Fernandes, Debora Cuchiara, Luciana Estevez,
Claudio Dias, Antonio H. da Fontoura], Argentinean Oceanographic
Institute (IADO) [Gerardo Perillo], State University of Sao
Paulo/Oceanographic Institute [Moyses Tessler], Brazilian
Navy/Directorate of Hydrography and Navigation/Navy Hydrographic Center
[Rodrigo Obino, Antonio Garcez], University of the Vale do
Itaja'(UNIVALI) [Carlos Augusto Schettini, Rodrigo Zaleski, Joao Luiz
Carvalho], State University of Rio de Janeiro (UERJ)/GPOG [Josefa Varela
Guerra, Marcelo Sperle, Monia Reich, Marcelo Azevedol, State University
of Sao Paulo (UNESP) [Hamilton Kyriu, Geraldo Maciel], US Naval Research
Laboratory (Nathaniel Plant, Joseph Calantoni, Tim Kooney, Bill Schmidt,
Kacey Edwards], US Naval Posgraduate School [James MacMahan, Mark
Orzech, Ed Thornton, Timothy Stanton, James Stockel, Thomas Keefer],
Proudman Oceanographic Laboratory Don Williams, Paul Bell], Delft
Hydraulics [Han Winterwerp] with particular thanks to the divers Silvio
Souza and Carlos Bergamini.
NR 16
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PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0278-4343
J9 CONT SHELF RES
JI Cont. Shelf Res.
PD MAR 1
PY 2009
VL 29
IS 3
BP 503
EP 514
DI 10.1016/j.csr.2008.09.023
PG 12
WC Oceanography
SC Oceanography
GA 425QU
UT WOS:000264653000002
ER
PT J
AU Calliari, LJ
Winterwerp, JC
Fernandes, E
Cuchiara, D
Vinzon, SB
Sperle, M
Holland, KT
AF Calliari, L. J.
Winterwerp, J. C.
Fernandes, E.
Cuchiara, D.
Vinzon, S. B.
Sperle, M.
Holland, K. T.
TI Fine grain sediment transport and deposition in the Patos Lagoon-Cassino
beach sedimentary system
SO CONTINENTAL SHELF RESEARCH
LA English
DT Article
DE Inner continental shelf; Mud sedimentation; Beach processes
ID CIRCULATION; DYNAMICS; CURRENTS; ESTUARY; BRAZIL; COAST
AB Extensive mud deposits superimposed on the predominantly sandy inner continental shelf adjacent to the Patos Lagoon estuary, indicates that the Lagoon is a potential source of fine sediments to the coastal sedimentary system. The lagoon is large and shallow, and the water movement is mainly controlled by wind-driven set-up and set-down. The mean river inflow is around 2000 m(3) s(-1), although peak flow rates exceeding 20,000 m(3) s(-1) have been observed during El Nino periods. Though the tidal elevations are small, tidal velocities in the lagoon's inlet can be significant due to the large extension of the backwaters. Moreover, significant exchange flows can be generated between the estuary and coastal area due to barotropic pressure gradients established as a function of wind and freshwater discharge. The predominant net flow is seawards, but opposite near-bed flows due to pronounced vertical salinity stratification can also be observed. The coastal area is characterized by small tidal effects, large scale ocean circulation, wind-induced residual flows and wave-driven currents, where the waves originate from swell or are locally generated.
Fine sediment is brought into the Patos Lagoon by the rivers and its deposits are likely to have long residence times. These fine sediment deposits can be remobilized by locally generated waves, and driven towards the channels and lagoon's shallow bays. Suspended particulate matter (SPM) concentrations within the lagoon do not exceed a few 10mg l(-1), though higher values have been measured occasionally. In the southern estuarine part of the lagoon, fine sediments may accumulate due to gravitational circulation effects, yielding SPM concentrations of a few 100 mg l(-1). The export of fine sediment from the lagoon to the coastal area occurs predominantly during NE winds. This explains why the majority of the off shore sediment deposits, known as the Patos Facies, are more widespread towards the southern portion of the inner continental shelf. These sediments deposit in the form of fluid and more compacted mud, between the 6 and 20 m isobath, in layers with thickness varying between a few dm to 2 m causing marked lateral differences in grain size. Recent sediment core data, indicates that fluid mud occurrence increases towards the shore and that the mud depocenter remains in the same area as previously mapped two decades before. On a long-term basis, this lateral heterogeneity in sediment properties controls the geomorphology of the inner continental shelf and shoreface, and influences the shoreline accretion rate and beach morphodynamic south of the inlet. Short-term effects are associated with episodic events of mud deposition on the beach during heavy storms that often result in strong gradients in hydrodynamic processes. These gradients in turn influence the morphodynamic behavior on the sectors affected by the mud deposits and can create coastal hazards relating to beach usage. (C) 2008 Elsevier Ltd. All rights reserved.
C1 [Calliari, L. J.; Fernandes, E.; Cuchiara, D.] Fundacao Univ Fed Rio Grande, BR-96201900 Rio Grande, Brazil.
[Winterwerp, J. C.] Deltares, NL-2600 GA Delft, Netherlands.
[Winterwerp, J. C.] Delft Univ Technol, Fac Civil Engn & Geosci, NL-2600 AA Delft, Netherlands.
[Vinzon, S. B.] Univ Fed Rio de Janeiro, BR-21945970 Rio De Janeiro, Brazil.
[Sperle, M.] Univ Estado Rio De Janeiro, BR-20550013 Rio De Janeiro, RJ, Brazil.
[Holland, K. T.] USN, Res Lab, Stennis Space Ctr, MS 39529 USA.
RP Calliari, LJ (reprint author), Fundacao Univ Fed Rio Grande, CP 474, BR-96201900 Rio Grande, Brazil.
EM lcalliari@log.furg.br; tholland@nrlssc.navy.mil
RI Holland, K. Todd/A-7673-2011
OI Holland, K. Todd/0000-0002-4601-6097
FU Office of Naval Research [N00173-04-1-G901, N00014-04-1-0274]
FX This work was made possible through grants by the Office of Naval
Research (N00173-04-1-G901 and N00014-04-1-0274) administered through
the ONR International Field Office.
NR 60
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U1 0
U2 14
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0278-4343
J9 CONT SHELF RES
JI Cont. Shelf Res.
PD MAR 1
PY 2009
VL 29
IS 3
BP 515
EP 529
DI 10.1016/j.csr.2008.09.019
PG 15
WC Oceanography
SC Oceanography
GA 425QU
UT WOS:000264653000003
ER
PT J
AU Reed, AH
Faas, RW
Allison, MA
Calliari, LJ
Holland, KT
O'Reilly, SE
Vaughan, WC
Alves, A
AF Reed, Allen H.
Faas, Richard W.
Allison, Mead A.
Calliari, Lauro J.
Holland, K. T.
O'Reilly, S. E.
Vaughan, W. C.
Alves, A.
TI Characterization of a mud deposit offshore of the Patos Lagoon, southern
Brazil
SO CONTINENTAL SHELF RESEARCH
LA English
DT Article
DE Fluid mud; Sediment strength; Geochronology; Rheology; Viscosity
ID AMAZON CONTINENTAL-SHELF; NON-NEWTONIAN FLOW; SEDIMENT ACCUMULATION;
SOUTHWEST COAST; YIELD-STRESS; FLUID MUD; WAVES; MUDBANKS; INDIA; RIVER
AB Rapid deposition of mud on the beach along the shoreface of Rio Grande do Sul, Brazil dramatically influences the normal operations in the littoral zone. In the surf zone, fluid and suspended mud opposes water-wave movement and dissipates water-wave energy; on the beach, mud limits trafficability. As part of a multinational, multidisciplinary program to evaluate the influence of mud strength, density and viscosity on water-wave attenuation, sediments were evaluated in situ or collected for evaluation from an area offshore of Cassino Beach, slightly south of the Patos Lagoon mouth. Shear strength of deposited sediments ranged from 0.6 kPa at the seafloor to 3.4 kPa at similar to 1 m below the seafloor. Mud sediments were also collected to simulate the in situ response of fluid mud to shear stresses. For this determination, theological evaluations were made using a strain-controlled Couette viscometer on numerous remixed samples that ranged in density from 1.05 to 1.30 g/cm(3). it was determined that this mud is a non-ideal Bingham material in that it has a true initial yield stress as well as a upper Bingham yield stress. Initial yield stress ranged from 0.59 to 2.62 Pa, upper Bingham yield stress ranged from 1.05 to 7.6 Pa. Apparent viscosity ranged from 0.02 to 4.7 Pa s with the highest viscosities occurring between the two yield stresses. Sediment strength in the remixed samples is 2 to 3 orders of magnitude lower than the horizontal shear strength of the sediment bed as determined by shear vane or predicted from penetrometer measurements. This difference is partially due to the fact that rheological evaluations are made on fully remixed sediments, whereas horizontal shear strength is determined within relatively undisturbed sediments. Similar values of viscosity and shear strength are comparable to those determined for mud in other coastal areas where fluid mud deposits occur. (C) 2009 Elsevier Ltd. All rights reserved.
C1 [Reed, Allen H.; Holland, K. T.] USN, Res Lab, Stennis Space Ctr, MS 39529 USA.
[Faas, Richard W.] Univ So Mississippi, Dept Marine Sci, Stennis Space Ctr, MS 39529 USA.
[Allison, Mead A.] Univ Texas Austin, Inst Geophys, Austin, TX 78758 USA.
[Calliari, Lauro J.; Alves, A.] Fundacao Univ Rio Grande, Rio Grande, RS, Brazil.
[O'Reilly, S. E.; Vaughan, W. C.] Minerals Management Serv, New Orleans, LA 70112 USA.
RP Reed, AH (reprint author), USN, Res Lab, Stennis Space Ctr, MS 39529 USA.
EM allen.reed@nrlssc.navy.mil
RI Allison, Mead/A-7208-2010; Holland, K. Todd/A-7673-2011
OI Holland, K. Todd/0000-0002-4601-6097
FU Office of Naval Research [0601153N]
FX We thank Susana Vinzon for overseeing this project. We owe thanks for
USM, FURG, Tulane and NRL personnel who enabled this work to be
completed, especially Dan Duncan at TU for performing geochronological
analysis, Evan Dillon for performing grain size analysis at NRL,
geological technicians at FURG, the divers in Susana's lab and the Pedro
de Souza Pereira, Rafael Guedes (diving) and Renato Espirito-Santo at
FURG. Additional gratitude goes to Cassino 8 and the R/V Larus captains
and crews. C. Brunner and USM provided lab space to perform rheological
work. We thank the Office of Naval Research for base funding to the
Naval Research Laboratory and for funding the experiment and
collaborators directly. This is Program Element number 0601153N.
NR 44
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PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0278-4343
J9 CONT SHELF RES
JI Cont. Shelf Res.
PD MAR 1
PY 2009
VL 29
IS 3
BP 597
EP 608
DI 10.1016/j.csr.2009.02.001
PG 12
WC Oceanography
SC Oceanography
GA 425QU
UT WOS:000264653000009
ER
PT J
AU Rogers, WE
Holland, KT
AF Rogers, W. Erick
Holland, K. Todd
TI A study of dissipation of wind-waves by mud at Cassino Beach, Brazil:
Prediction and inversion
SO CONTINENTAL SHELF RESEARCH
LA English
DT Article
DE Wave attenuation; Wave damping; Wave dissipation; Wave spectra; Wave
hindcasting; Wave predicting; SWAN; Wave analysis; Wave model; Mud;
Rheology (Brazil Rio Grande do Sol Cassino Beach); <(53 degrees W, 32
degrees S) (52 degrees W, 33 degrees S)>
ID SOUTHWEST COAST; SHALLOW-WATER; SURFACE-WAVES; MODEL; SWAN; ATTENUATION;
MUDBANKS; SPECTRA; BOTTOM; SCALE
AB The impact of a non-rigid seafloor on the wave climate at Cassino Beach, Brazil, May-June 2005 is studied using field measurements and a numerical wave model. The measurements consist of wave data at four locations: rheology and mud thickness from grab samples; and an estimate of the horizontal distribution of mud based on echo-soundings. The dissipation of waves by a non-rigid bottom is represented in the wave model by treating the mud layer as a viscous fluid. Applied for 431 time periods, the model without this type of dissipation has a strong tendency to overpredict nearshore wave energy, except during a period of large storm waves. Two model variations which include this dissipation have a modest tendency to underpredict the nearshore wave energy. An inversion methodology is developed and applied to infer an alternate mud distribution which, when used with the wave model, yields the observed waveheights. Published by Elsevier Ltd.
C1 [Rogers, W. Erick] USN, Res Lab, Div Oceanog, Stennis Space Ctr, MS 39529 USA.
[Holland, K. Todd] NRL, Marine Geosci Div, Stennis Space Ctr, MS 39529 USA.
RP Rogers, WE (reprint author), USN, Res Lab, Div Oceanog, Code 7322, Stennis Space Ctr, MS 39529 USA.
EM rogers@nrlssc.navy.mil; tholland@nrlssc.navy.mil
RI Holland, K. Todd/A-7673-2011
OI Holland, K. Todd/0000-0002-4601-6097
NR 30
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U1 1
U2 1
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0278-4343
J9 CONT SHELF RES
JI Cont. Shelf Res.
PD MAR 1
PY 2009
VL 29
IS 3
BP 676
EP 690
DI 10.1016/j.csr.2008.09.013
PG 15
WC Oceanography
SC Oceanography
GA 425QU
UT WOS:000264653000016
ER
PT J
AU Marmorino, GO
Smith, GB
Toporkov, JV
Sletten, MA
Perkovic, D
Frasier, SJ
AF Marmorino, George O.
Smith, Geoffrey B.
Toporkov, Jakov V.
Sletten, Mark A.
Perkovic, Dragana
Frasier, Stephen J.
TI Airborne imagery of ocean mixed-layer convective patterns
SO DEEP-SEA RESEARCH PART I-OCEANOGRAPHIC RESEARCH PAPERS
LA English
DT Article
DE Thermal convection; Langmuir circulation; Surface mixed layer;
Sea-surface temperature; Cool skin; Surfactant; Remote sensing; Infrared
imagery; Synthetic aperture radar
ID LANGMUIR CIRCULATION; SURFACE TEMPERATURE; SEA
AB Airborne infrared and synthetic aperture radar imagery collected over the Gulf Stream are used to examine the surface patterns of small-scale thermal convection and wind-driven Langmuir circulation. These patterns have a thermal contrast of similar to 0.25 degrees C, which is roughly an order of magnitude larger than predicted by large-eddy simulations but consistent with the effect on surface temperature of surfactant accumulations induced by mixed-layer eddies. (c) 2008 Elsevier Ltd. All rights reserved.
C1 [Marmorino, George O.; Smith, Geoffrey B.; Toporkov, Jakov V.; Sletten, Mark A.] USN, Res Lab, Remote Sensing Div, Washington, DC 20375 USA.
[Perkovic, Dragana; Frasier, Stephen J.] Univ Massachusetts, Microwave Remote Sensing Lab, Amherst, MA 01003 USA.
RP Marmorino, GO (reprint author), USN, Res Lab, Remote Sensing Div, Washington, DC 20375 USA.
EM marmorino@nrl.navy.mil
RI Frasier, Stephen/H-1536-2015
OI Frasier, Stephen/0000-0003-4287-2889
FU Office of Naval Research [72-8179, 72-8027, 72-9201, N00014-98-1-0612];
DOD High Performance Computing Modernization Program
FX This work was made possible through the support of the Office of Naval
Research (NRL work units 72-8179, 72-8027, and 72-9201) and by a grant
of computer time from the DOD High Performance Computing Modernization
Program at the US Army Space and Missile Defense Command Advanced
Research Center. Support for University of Massachusetts investigators
was provided by the Office of Naval Research (Code 321RS) under Grant
N00014-98-1-0612. We thank the NOAA Aircraft Operations Center, Tampa,
FL, for their generous logistical and technical support. We thank Dr. D.
Thompson for help with the C-band model calculations and three anonymous
reviewers for helpful comments.
NR 26
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U1 1
U2 6
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0967-0637
J9 DEEP-SEA RES PT I
JI Deep-Sea Res. Part I-Oceanogr. Res. Pap.
PD MAR
PY 2009
VL 56
IS 3
BP 435
EP 441
DI 10.1016/j.dsr.2008.10.007
PG 7
WC Oceanography
SC Oceanography
GA 411NV
UT WOS:000263657200010
ER
PT J
AU Galeckas, KJ
Uebelhoer, NS
AF Galeckas, Kenneth J.
Uebelhoer, Nathan S.
TI Successful Treatment of Pyogenic Granuloma Using a 1,064-nm Laser
Followed by Glycerin Sclerotherapy
SO DERMATOLOGIC SURGERY
LA English
DT Editorial Material
ID PULSED-DYE-LASER; SODIUM TETRADECYL SULFATE; TOPICAL IMIQUIMOD;
CRYOTHERAPY; CHILDREN; TRIAL
C1 [Galeckas, Kenneth J.] Natl Naval Med Ctr, Dept Dermatol, Bethesda, MD 20889 USA.
[Uebelhoer, Nathan S.] USN, Med Ctr, Dept Dermatol, San Diego, CA 92152 USA.
RP Galeckas, KJ (reprint author), Natl Naval Med Ctr, Dept Dermatol, 8901 Rockville Pike, Bethesda, MD 20889 USA.
EM kgaleckas@yahoo.com
NR 17
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U1 1
U2 1
PU WILEY-BLACKWELL PUBLISHING, INC
PI MALDEN
PA COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA
SN 1076-0512
J9 DERMATOL SURG
JI Dermatol. Surg.
PD MAR
PY 2009
VL 35
IS 3
BP 530
EP 534
DI 10.1111/j.1524-4725.2009.01081.x
PG 5
WC Dermatology; Surgery
SC Dermatology; Surgery
GA 416QX
UT WOS:000264021700023
PM 19250304
ER
PT J
AU Wang, HY
Zhou, H
Forest, MG
AF Wang, Hongyun
Zhou, Hong
Forest, M. Gregory
TI SHEARED NEMATIC LIQUID CRYSTAL POLYMER MONOLAYERS
SO DISCRETE AND CONTINUOUS DYNAMICAL SYSTEMS-SERIES B
LA English
DT Article
DE Shear flow; nematic liquid crystal polymers; phase diagram
ID SMOLUCHOWSKI-EQUATION; WEAK SHEAR; RODLIKE POLYMERS; PHASE-DIAGRAM;
STEADY-STATES; FLOW; BEHAVIOR; RATES; EQUILIBRIA; ALIGNMENT
AB We provide a comprehensive study on the planar (2D) orientational distributions of nematic polymers under an imposed shear flow of arbitrary strength. We extend previous analysis for persistence of equilibria in steady shear and for transitions to unsteady limit cycles, from closure models [21] to the Doi-Hess 2D kinetic equation. A variation on the Boltzmann distribution analysis of Constantin et al. [3, 4 ,5] and others [8, 22, 23] for potential flow is developed to solve for all persistent steady equilibria, and characterize parameter boundaries where steady states cease to exist, which predicts the transition to tumbling limit cycles.
C1 [Wang, Hongyun] Univ Calif Santa Cruz, Dept Appl Math & Stat, Santa Cruz, CA 95064 USA.
[Zhou, Hong] USN, Postgrad Sch, Dept Appl Math, Monterey, CA 93943 USA.
[Forest, M. Gregory] Univ N Carolina, Dept Math, Chapel Hill, NC 27599 USA.
[Forest, M. Gregory] Univ N Carolina, Inst Adv Mat, Chapel Hill, NC 27599 USA.
RP Wang, HY (reprint author), Univ Calif Santa Cruz, Dept Appl Math & Stat, Santa Cruz, CA 95064 USA.
EM hongwang@ams.ucsc.edu; hzhou@nps.edu; forest@email.unc.edu
FU Air Force Office of Scientific Research; National Science Foundation
FX This work was partially supported by the Air Force Office of Scientific
Research and by the National Science Foundation. The authors thank the
anonymous referees for their constructive suggestions and comments on
improving this manuscript.
NR 31
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U1 1
U2 2
PU AMER INST MATHEMATICAL SCIENCES
PI SPRINGFIELD
PA PO BOX 2604, SPRINGFIELD, MO 65801-2604 USA
SN 1531-3492
J9 DISCRETE CONT DYN-B
JI Discrete Contin. Dyn. Syst.-Ser. B
PD MAR
PY 2009
VL 11
IS 2
BP 497
EP 517
DI 10.3934/dcdsb.2009.11.497
PG 21
WC Mathematics, Applied
SC Mathematics
GA 407HN
UT WOS:000263354300014
ER
PT J
AU Niewoehner, RJ
Steidle, CE
AF Niewoehner, Robert J.
Steidle, Craig E.
TI The Loss of the Space Shuttle Columbia: Portaging Leadership Lessons
with a Critical Thinking Model
SO EMJ-ENGINEERING MANAGEMENT JOURNAL
LA English
DT Article
DE Critical Thinking; Risk Management; Virtue; Intellectual Standards
AB Business schools have long valued case studies as a tool for both broadening a student's perspective, and provoking them to deeper consideration of complex situations. The challenge with case studies is assuring the portability of the lessons; we don't expect students to see situations imitating those they've studied, hence the goal must instead be habits of mind and principles of action that the student can Portage to the circumstances of their professional lives. This article evaluates the suitability of Richard Paul's Critical Thinking model as a template for evaluating engineering enterprise thinking habits and organizational behavior, using the Columbia Accident Investigation Board (CAIB) report as a case study. With minor refinement, Paul's model provides a powerful vocabulary for complicated case study analysis; familiarity with the model provides participants with both a mechanism for analysis and a means for portaging lessons to other professional situations and organizations.
C1 [Niewoehner, Robert J.; Steidle, Craig E.] USN Acad, Annapolis, MD 21402 USA.
RP Niewoehner, RJ (reprint author), USN Acad, 590 Holloway Rd, Annapolis, MD 21402 USA.
EM niewoehn@usna.edu
NR 6
TC 2
Z9 2
U1 2
U2 7
PU AMER SOC ENGINEERING MANAGEMENT
PI ROLLA
PA PO BOX 820, ROLLA, MO 65402 USA
SN 1042-9247
J9 EMJ-ENG MANAG J
JI EMJ-Eng. Manag. J.
PD MAR
PY 2009
VL 21
IS 1
BP 9
EP 18
PG 10
WC Engineering, Industrial; Management
SC Engineering; Business & Economics
GA 424ZP
UT WOS:000264607100003
ER
PT J
AU Morris, RE
Hammond, MH
Cramer, JA
Johnson, KJ
Giordano, BC
Kramer, KE
Rose-Pehrsson, SL
AF Morris, Robert E.
Hammond, Mark H.
Cramer, Jeffrey A.
Johnson, Kevin J.
Giordano, Braden C.
Kramer, Kirsten E.
Rose-Pehrsson, Susan L.
TI Rapid Fuel Quality Surveillance through Chemometric Modeling of
Near-Infrared Spectra
SO ENERGY & FUELS
LA English
DT Article
ID PARTIAL LEAST-SQUARES; MULTIVARIATE CALIBRATION; OCTANE NUMBERS; DATA
SETS; SPECTROSCOPY; PREDICTION; REGRESSION; UNCERTAINTY; GASOLINE;
DESIGN
AB The use of liquid fuels necessitates methods to assess the quality and suitability of these fuels for their intended use. Traditionally, this is performed through a series of chemical and physical tests. However, in some operational situations, streamlined methods to reliably evaluate fuel quality would offer distinct advantages. The Naval Research Laboratory has been engaged in a research program to explore and develop rapid automated fuel quality surveillance technologies. Chemometric modeling methodologies have been investigated as a means to derive mathematical relationships between spectroscopic measurements and measured fuel specification properties. While this is not a novel approach, the consistency and close quality control of today's production fuels render them non-ideal as calibration sets for the construction of multivariate property prediction models, and thus can limit their precision. This paper describes a practical approach to identify and predict the properties of petroleum derived fuels, as well as blends with Fischer-Tropsch synthetic and biofuels. The performance of these property models is demonstrated in an example of a hardware implementation, that is, the Navy Fuel Property Monitor (NFPM). The NFPM will rapidly estimate a range of specification fuel properties of jet and Naval distillate fuels, from a single analysis by near-infrared (NIR) spectroscopy. This technology will form the basis for control, acquisition and data analysis instrumentation for shipboard and land-based use. A further implementation of this technology will be for in-line sensing applications to provide real-time fuel grade and specification property monitoring as the fuels are moved through supply pipelines.
C1 [Morris, Robert E.; Hammond, Mark H.; Cramer, Jeffrey A.; Johnson, Kevin J.; Giordano, Braden C.; Kramer, Kirsten E.; Rose-Pehrsson, Susan L.] US Naval Res Lab, Chem Sensing & Chemometr Sect, Washington, DC 20375 USA.
RP Morris, RE (reprint author), US Naval Res Lab, Chem Sensing & Chemometr Sect, Code 6181,4555 Overlook Ave, Washington, DC 20375 USA.
EM robert.morris@nrl.navy.mil
FU National Research Council (NRC); Office of Naval Research (ONR); Navy
Fuels & Lubes Cross Functional Team (NFLCFF)
FX The authors would like to thank the National Research Council (NRC), the
Office of Naval Research (ONR), and the Navy Fuels & Lubes Cross
Functional Team (NF&LCFF) for supporting this work. We would also like
to thank Ms. Sherry Williams of the Naval Air Systems Command (NAVAIR
Air-4.4.5) and Mr. Kenneth Henz of the U.S. Navy Operational Logistics
Support Center (NOLSC) for their ongoing efforts in obtaining fuel
samples for the calibration training sets.
NR 48
TC 22
Z9 22
U1 2
U2 18
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0887-0624
J9 ENERG FUEL
JI Energy Fuels
PD MAR-APR
PY 2009
VL 23
BP 1610
EP 1618
DI 10.1021/ef800869t
PG 9
WC Energy & Fuels; Engineering, Chemical
SC Energy & Fuels; Engineering
GA 436TM
UT WOS:000265439000062
ER
PT J
AU Willauer, HD
Hardy, DR
Lewis, MK
Ndubizu, EC
Williams, FW
AF Willauer, Heather D.
Hardy, Dennis R.
Lewis, M. Kathleen
Ndubizu, Ejiogu C.
Williams, Frederick W.
TI Recovery of CO(2) by Phase Transition from an Aqueous Bicarbonate System
under Pressure by Means of Multilayer Gas Permeable Membranes
SO ENERGY & FUELS
LA English
DT Article
ID HOLLOW-FIBER MEMBRANES; CARBON-DIOXIDE SEPARATION; TITRATION ALKALINITY;
LIQUID MEMBRANES; WATER; OXYGEN
AB On use of simple model aqueous sodium bicarbonate solutions and Celgard 2400 gas permeable membranes, bicarbonate disproportionates to carbon dioxide and carbonate when gaseous carbon dioxide is removed from the water by diffusion through gas permeable membranes at elevated water pressures. The permeability of CO(2) by phase transition from bicarbonate solutions at pressures of 500 psi is only possible because of the use of multiple gas permeable membrane layers. The multiple layers minimize water permeability at pressures near or above the Young-Laplace bubble point of single membrane layers, and the gas permeability efficiency and rate are greatly decreased.
C1 [Willauer, Heather D.; Hardy, Dennis R.; Ndubizu, Ejiogu C.; Williams, Frederick W.] Naval Res Lab, Div Chem, Washington, DC 20375 USA.
[Lewis, M. Kathleen] Off Naval Res, Arlington, VA 22203 USA.
[Lewis, M. Kathleen] Luzerne Cty Community Coll, Nanticoke, PA 18634 USA.
RP Willauer, HD (reprint author), Naval Res Lab, Div Chem, Code 6180,4555 Overlook Ave SW, Washington, DC 20375 USA.
EM heather.willauer@nrl.navy.mil
FU Office of Naval Research; Naval Research Laboratory
FX This work was supported by the Office of Naval Research both directly
and through the Naval Research Laboratory. The authors acknowledge the
valuable input from Professor Kathleen Hardy of St. Mary's College of
Maryland.
NR 24
TC 9
Z9 9
U1 1
U2 9
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0887-0624
J9 ENERG FUEL
JI Energy Fuels
PD MAR-APR
PY 2009
VL 23
BP 1770
EP 1774
DI 10.1021/ef8009298
PG 5
WC Energy & Fuels; Engineering, Chemical
SC Energy & Fuels; Engineering
GA 436TM
UT WOS:000265439000082
ER
PT J
AU Lovell, SJ
Drake, LA
AF Lovell, Sabrina J.
Drake, Lisa A.
TI Tiny Stowaways: Analyzing the Economic Benefits of a US Environmental
Protection Agency Permit Regulating Ballast Water Discharges
SO ENVIRONMENTAL MANAGEMENT
LA English
DT Article
DE Aquatic invasive species; US Environmental Protection Agency; Economic
impacts; Harmful algal bloom; Invasive microorganisms; Viral hemorrhagic
septicemia
ID ALGA AUREOCOCCUS-ANOPHAGEFFERENS; HEMORRHAGIC SEPTICEMIA VIRUS;
UNITED-STATES; BROWN TIDE; OCEAN EXCHANGE; GREAT-LAKES; SHIPS; BLOOMS;
VIBRIO-CHOLERAE-O1; MORTALITY
AB The U.S. Environmental Protection Agency has proposed permitting ballast water discharges-a benefit of which would be to reduce the economic damages associated with the introduction and spread of aquatic invasive species. Research on ship-borne aquatic invasive species has been conducted in earnest for decades, but determining the economic damages they cause remains troublesome. Furthermore, with the exception of harmful algal blooms, the economic consequences of microscopic invaders have not been studied, despite their potentially great negative effects. In this paper, we show how to estimate the economic benefits of preventing the introduction and spread of harmful bacteria, microalgae, and viruses delivered in U.S. waters. Our calculations of net social welfare show the damages from a localized incident, cholera-causing bacteria found in shellfish in the Gulf of Mexico, to be approximately $706,000 (2006$). On a larger scale, harmful algal species have the potential to be transported in ships' ballast tanks, and their effects in the United States have been to reduce commercial fisheries landings and impair water quality. We examine the economic repercussions of one bloom-forming species. Finally, we consider the possible translocation within the Great Lakes of a virus that has the potential to harm commercial and recreational fisheries. These calculations illustrate an approach to quantifying the benefits of preventing invasive aquatic microorganisms from controls on ballast water discharges.
C1 [Lovell, Sabrina J.] NOAA Fisheries Serv, Off Sci & Technol, Silver Spring, MD 20910 USA.
[Drake, Lisa A.] Sci Applicat Int Corp, Naval Res Lab, Key West, FL 33041 USA.
RP Lovell, SJ (reprint author), NOAA Fisheries Serv, Off Sci & Technol, 1315 East West Highway, Silver Spring, MD 20910 USA.
EM Sabrina.Lovell@noaa.gov
FU U.S. EPA; U.S. Coast Guard Academy
FX We appreciate Steve Heath, Alabama Department of Environmental
Management, and Lewis Byrd, Alabama Health Department, for providing the
oyster landing data for Mobile Bay. Thanks are due to Philip Jenkins, of
Philip T. Jenkins and Associates Limited, and Glen Nekvasil, of the
Lakes Carriers' Association, for their assistance in estimating the
Great Lakes vessels' transit time. Gary Whelan of the Michigan
Department of Natural Resources generously provided data regarding viral
hemorrhagic septicemia virus fish kills. David Simpson, Joel Corona, and
Ryan Albert of the U. S. Environmental Protection Agency (EPA) provided
insightful comments. This work received no financial support by the U.S.
EPA, U.S. Coast Guard Academy, or other organizations. This work was
conducted while Sabrina Lovell was employed by the U.S. EPA and Lisa
Drake was employed at the U.S. Coast Guard Academy.
NR 50
TC 8
Z9 8
U1 3
U2 31
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 0364-152X
J9 ENVIRON MANAGE
JI Environ. Manage.
PD MAR
PY 2009
VL 43
IS 3
BP 546
EP 555
DI 10.1007/s00267-008-9215-2
PG 10
WC Environmental Sciences
SC Environmental Sciences & Ecology
GA 409YM
UT WOS:000263541700016
PM 18853223
ER
PT J
AU Welch, KE
LeardMann, CA
Jacobson, IG
Speigle, SJ
Smith, B
Smith, TC
Ryan, MA
AF Welch, Kari E.
LeardMann, Cynthia A.
Jacobson, Isabel G.
Speigle, Steven J.
Smith, Besa
Smith, Tyler C.
Ryan, Margaret A.
TI Postcards Encourage Participant Updates
SO EPIDEMIOLOGY
LA English
DT Letter
ID COHORT; HEALTH
C1 [Welch, Kari E.; LeardMann, Cynthia A.; Jacobson, Isabel G.; Speigle, Steven J.; Smith, Besa; Smith, Tyler C.; Ryan, Margaret A.] USN, Hlth Res Ctr, Dept Def, Ctr Deployment Hlth Res, San Diego, CA 92152 USA.
RP Welch, KE (reprint author), USN, Hlth Res Ctr, Dept Def, Ctr Deployment Hlth Res, San Diego, CA 92152 USA.
NR 7
TC 8
Z9 8
U1 0
U2 0
PU LIPPINCOTT WILLIAMS & WILKINS
PI PHILADELPHIA
PA 530 WALNUT ST, PHILADELPHIA, PA 19106-3621 USA
SN 1044-3983
J9 EPIDEMIOLOGY
JI Epidemiology
PD MAR
PY 2009
VL 20
IS 2
BP 313
EP 314
PG 2
WC Public, Environmental & Occupational Health
SC Public, Environmental & Occupational Health
GA 412HH
UT WOS:000263715400028
PM 19234420
ER
PT J
AU Szabo, CI
Indelicato, P
Gumberidze, A
Holland, GE
Seely, JF
Hudson, LT
Henins, A
Audebert, P
Bastiani-Ceccotti, S
Tabakhoff, E
Brambrink, E
AF Szabo, C. I.
Indelicato, P.
Gumberidze, A.
Holland, G. E.
Seely, J. F.
Hudson, L. T.
Henins, A.
Audebert, P.
Bastiani-Ceccotti, S.
Tabakhoff, E.
Brambrink, E.
TI X-ray measurements at high-power lasers Relative conversion efficiencies
of short pulse laser light into K X-ray radiation in medium to high Z
elements
SO EUROPEAN PHYSICAL JOURNAL-SPECIAL TOPICS
LA English
DT Article
ID CRYSTAL SPECTROMETER; TRANSMISSION; IGNITION
AB Conversion efficiencies of laser light into K x-ray radiation are used to characterize laser-solid interactions e. g. in measurements with back-lighter targets in Inertial Confinement Fusion research or in ultra short x-ray science where ultra short laser pulses are used to create x-rays for investigation of dynamic processes. In our measurements we observed high energy (few tens of keV) K x-ray radiation of element pairs created upon impact of a 1 ps, 100 J laser pulse on the target surface. The high-energy electrons created in this interaction ionise and excite the target material. We have used high purity alloy foils of Pd and Ag, as well as In and Sn and crystals of CsI and rare earth molybdates as target materials. Both constituents of these targets were simultaneously excited in one shot. The K x-ray radiation was dispersed and detected with the LCS (LULI Crystal Spectrometer), a Cauchois-type cylindrically bent transmission-crystal spectrometer. Measuring ratios in the x-ray spectra permits determination of relative conversion efficiencies for pairs of elements under identical laser-target interaction conditions.
C1 [Szabo, C. I.; Indelicato, P.; Gumberidze, A.] Univ Paris 06, CNRS, Lab Kastler Brossel, ENS, Paris, France.
[Holland, G. E.; Seely, J. F.] Naval Res Lab, Washington, DC 20375 USA.
[Hudson, L. T.; Henins, A.] Natl Inst Stand & Technol, Gaithersburg, MD 20899 USA.
[Audebert, P.; Bastiani-Ceccotti, S.; Tabakhoff, E.; Brambrink, E.] Ecole Polytech, Lab Utilisat Lasers Intenses, F-91128 Palaiseau, France.
RP Szabo, CI (reprint author), Univ Paris 06, CNRS, Lab Kastler Brossel, ENS, Paris, France.
EM szabo@spectro.jussieu.fr
RI Indelicato, Paul/D-7636-2011
OI Indelicato, Paul/0000-0003-4668-8958
NR 16
TC 7
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U1 0
U2 6
PU EDP SCIENCES S A
PI LES ULIS CEDEX A
PA 17, AVE DU HOGGAR, PA COURTABOEUF, BP 112, F-91944 LES ULIS CEDEX A,
FRANCE
SN 1951-6355
J9 EUR PHYS J-SPEC TOP
JI Eur. Phys. J.-Spec. Top.
PD MAR
PY 2009
VL 169
BP 243
EP 248
DI 10.1140/epjst/e2009-00999-2
PG 6
WC Physics, Multidisciplinary
SC Physics
GA 424IR
UT WOS:000264560900036
ER
PT J
AU Raney, NH
Petersen, EJ
Smith, TA
Cowan, JE
Rendeiro, DG
Deyle, GD
Childs, JD
AF Raney, Nicole H.
Petersen, Evan J.
Smith, Tracy A.
Cowan, James E.
Rendeiro, Daniel G.
Deyle, Gail D.
Childs, John D.
TI Development of a clinical prediction rule to identify patients with neck
pain likely to benefit from cervical traction and exercise
SO EUROPEAN SPINE JOURNAL
LA English
DT Article
DE Neck pain; Classification; Cervical traction
ID LOW-BACK-PAIN; RANDOMIZED CONTROLLED-TRIAL; FEAR-AVOIDANCE BELIEFS;
PHYSICAL-THERAPY; NONOPERATIVE MANAGEMENT; GENERAL-PRACTITIONER;
MANIPULATIVE THERAPY; SPINAL MANIPULATION; OUTCOME MEASURES;
DIAGNOSTIC-TEST
AB The objective of the study was to develop a clinical prediction rule (CPR) to identify patients with neck pain likely to improve with cervical traction. The study design included prospective cohort of patients with neck pain referred to physical therapy. Development of a CPR will assist clinicians in classifying patients with neck pain likely to benefit from cervical traction. Eighty patients with neck pain received a standardized examination and then completed six sessions of intermittent cervical traction and cervical strengthening exercises twice weekly for 3 weeks. Patient outcome was classified at the end of treatment, based on perceived recovery according to the global rating of change. Patients who achieved a change a parts per thousand yen+6 ("A great deal better" or "A very great deal better") were classified as having a successful outcome. Univariate analyses (t tests and chi-square) were conducted on historical and physical examination items to determine potential predictors of successful outcome. Variables with a significance level of P a parts per thousand currency sign 0.15 were retained as potential prediction variables. Sensitivity, specificity and positive and negative likelihood ratios (LRs) were then calculated for all variables with a significant relationship with the reference criterion of successful outcome. Potential predictor variables were entered into a step-wise logistic regression model to determine the most accurate set of clinical examination items for prediction of treatment success. Sixty-eight patients (38 female) were included in data analysis of which 30 had a successful outcome. A CPR with five variables was identified: (1) patient reported peripheralization with lower cervical spine (C4-7) mobility testing; (2) positive shoulder abduction test; (3) age a parts per thousand yen55; (4) positive upper limb tension test A; and (5) positive neck distraction test. Having at least three out of five predictors present resulted in a +LR equal to 4.81 (95% CI = 2.17-11.4), increasing the likelihood of success with cervical traction from 44 to 79.2%. If at least four out of five variables were present, the +LR was equal to 23.1 (2.5-227.9), increasing the post-test probability of having improvement with cervical traction to 94.8%. This preliminary CPR provides the ability to a priori identify patients with neck pain likely to experience a dramatic response with cervical traction and exercise. Before the rule can be implemented in routine clinical practice, future studies are necessary to validate the rule. The CPR developed in this study may improve clinical decision-making by assisting clinicians in identifying patients with neck pain likely to benefit from cervical traction and exercise.
C1 [Raney, Nicole H.] Wilford Hall USAF Med Ctr, Dept Phys Therapy, San Antonio, TX 78209 USA.
[Petersen, Evan J.] Brooke Army Med Ctr, Dept Phys Therapy, San Antonio, TX USA.
[Smith, Tracy A.] US Sergeants Major Acad, Army Phys Fitness Res Inst, El Paso, TX USA.
[Cowan, James E.] USN, Special Warfare Ctr, BUD S, Coronado, CA USA.
[Rendeiro, Daniel G.] Carl R Darnall Army Med Ctr, Phys Therapy Serv, Ft Hood, TX USA.
[Deyle, Gail D.] USA, Brooke Army Med Ctr, Ft Sam Houston, TX USA.
[Childs, John D.] Baylor Univ, USA, Ft Sam Houston, TX USA.
RP Raney, NH (reprint author), Wilford Hall USAF Med Ctr, Dept Phys Therapy, 134 Evans Ave, San Antonio, TX 78209 USA.
EM Sanantoniogirl1@hotmail.com; evan.petersen@amedd.army.mil;
tracy.alexandra.smith@gmail.com; James.cowan@navsoc.socom.mil;
Daniel.rendeiro@amedd.army.mil; gdeyle@satx.rr.com; childsjd@gmail.com
FU Brooke Army Medical Center; Department of the Army; Department of the
Air Force; Department of the Navy; Department of Defense
FX This study was approved by the Institutional Review Board at Brooke Army
Medical Center, Fort Sam Houston, Texas. The opinions and assertions
contained herein are the private views of the authors and are not to be
construed as official as reflecting the views of the Department of the
Army, Department of the Air Force, Department of the Navy, or the
Department of Defense.
NR 64
TC 25
Z9 27
U1 1
U2 21
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 0940-6719
EI 1432-0932
J9 EUR SPINE J
JI Eur. Spine J.
PD MAR
PY 2009
VL 18
IS 3
BP 382
EP 391
DI 10.1007/s00586-008-0859-7
PG 10
WC Clinical Neurology; Orthopedics
SC Neurosciences & Neurology; Orthopedics
GA 414NE
UT WOS:000263870200013
PM 19142674
ER
EF