FN Thomson Reuters Web of Science™
VR 1.0
PT J
AU Hale, CS
   Palazotto, AN
   Baker, WP
AF Hale, Chad S.
   Palazotto, Anthony N.
   Baker, William P.
TI Engineering Approach for the Evaluation of Mechanical Wear Considering
   the Experimental Holloman High-Speed Test Track
SO JOURNAL OF ENGINEERING MECHANICS-ASCE
LA English
DT Article
DE Holloman High Speed Test Track (HHSTT); High velocity wear rate;
   VascoMax 300 maraging steel; Friction; Sliding wear
ID FRICTION; TEMPERATURE; MODELS
AB This research is directed toward an understanding of the high-speed interaction effects that two bodies have on each other. The experimental high-speed test track at Holloman AFB has undergone many design innovations over 50 years. One of the problems that remains in the modern era related to improving the speed characteristics of a rocket test sled is the wear that the interconnecting device, called the slipper, undergoes as it slides down the rail and impacts local asperities. The research is separated into two main areas. The first is the metallurgical investigation in which the material change is brought about by the surface friction through surface collision, and characteristics are determined that lead to a numerical model. The second is the development of a finite-element model using the commercial code ABAQUS, which is used in an attempt to capture the physics involved in the overall phenomenon. It became evident that the wear is not uniform, but is dictated by the evolving aerodynamics of a sled moving at close to 1,500 m/s, the speed considered in this research, creating an uneven wear surface at the interface of the slipper and rail. The finite-element analysis is separated into two models, one related to the global effects of movement using a predefined velocity versus time function, and the other defining a microlocal collision with a surface asperity. The Johnson-Cook flow equation is used to establish a von Mises maximum stress failure criterion within ABAQUS to arrive at the results. A method has been developed that allows the prediction of wear for a time-dependent forcing function obtained through a structural dynamics approach. Results indicate that the method is sufficiently robust that the physics of the wear process at high speeds is reasonably modeled. The metallurgical investigation is accomplished by testing component parts of a slipper recovered after a January 2008 sled test run, and this is used as the evidence of wear. DOI: 10.1061/(ASCE)EM.1943-7889.0000409. (C) 2012 American Society of Civil Engineers.
C1 [Hale, Chad S.; Palazotto, Anthony N.] USAF, Inst Technol, Dept Aeronaut & Astronaut, Wright Patterson AFB, OH 45433 USA.
   [Baker, William P.] USAF, Inst Technol, Dept Math & Stat, Wright Patterson AFB, OH 45433 USA.
RP Palazotto, AN (reprint author), USAF, Inst Technol, Dept Aeronaut & Astronaut, Wright Patterson AFB, OH 45433 USA.
EM anthony.palazotto@afit.edu
FU Air Force Office of Scientific Research
FX The writers would like to acknowledge the Air Force Office of Scientific
   Research for financially supporting this research. Additionally, Dr.
   Michael Hooser and his associates at the HHSTT made critical
   contributions to this research effort. The Air Force Research
   Laboratory, Materials and Manufacturing Directorate, Wright-Patterson
   AFB, Ohio, provided invaluable expertise and support during the
   metallographic analysis. The views expressed in this work are those of
   the authors and do not reflect the official policy or position of the
   United States Air Force, the Department of Defense, or the U. S.
   Government. This material is declared a work of the U. S. Government and
   is not subject to copyright protection in the United States.
NR 38
TC 1
Z9 1
U1 1
U2 16
PU ASCE-AMER SOC CIVIL ENGINEERS
PI RESTON
PA 1801 ALEXANDER BELL DR, RESTON, VA 20191-4400 USA
SN 0733-9399
J9 J ENG MECH-ASCE
JI J. Eng. Mech.-ASCE
PD SEP
PY 2012
VL 138
IS 9
BP 1127
EP 1140
DI 10.1061/(ASCE)EM.1943-7889.0000409
PG 14
WC Engineering, Mechanical
SC Engineering
GA 059HX
UT WOS:000312696100006
ER

PT J
AU Thomas, EM
   Heebl, JD
   Pfeiffer, C
   Grbic, A
AF Thomas, Erin M.
   Heebl, Jason D.
   Pfeiffer, Carl
   Grbic, Anthony
TI A Power Link Study of Wireless Non-Radiative Power Transfer Systems
   Using Resonant Shielded Loops
SO IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I-REGULAR PAPERS
LA English
DT Article
DE Mutual inductance; non-radiative power transfer; resonant magnetic
   coupling; shielded loops; wireless power
ID COUPLED COILS; DESIGN
AB This paper discusses the use of magnetically coupled resonators for midrange wireless non-radiative power transfer (WNPT). A quasi-static (circuit) model is developed to establish key measures of performance and to aid in design. The use of directly fed, resonant shielded loops for WNPT is also proposed for the first time. Two experimental WNPT systems employing shielded loops are reported. A comprehensive experimental study is performed, and the performance of the WNPT systems shows close agreement with analytical predictions and developed circuit models. With a single-turn system of loop radius 10.7 cm, power transfer efficiency of 41.8% is achieved at a loop separation of 35 cm (3.3 loop radii). When the number of turns is increased to ten, a power transfer efficiency of 36.5% is achieved at a loop separation of 56 cm (5.3 loop radii). Measured magnetic field levels in the vicinity of the WNPT systems are shown to closely agree with analytical field values.
C1 [Thomas, Erin M.; Pfeiffer, Carl; Grbic, Anthony] Univ Michigan, Dept Elect Engn & Comp Sci, Radiat Lab, Ann Arbor, MI 48109 USA.
   [Heebl, Jason D.] USAF, Res Labs, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA.
RP Thomas, EM (reprint author), SRI Int, Commun Radar & Sensing Lab, Menlo Pk, CA 94025 USA.
EM emenolly@umich.edu; Jason.Heebl.1@us.af.mil; carlpfei@umich.edu;
   agrbic@umich.edu
FU U.S. Air Force through Universal Technology Corporation
   [FA8650-05-D-5807, FA8650-090-D-5037]; U.S. Air Force through UES Inc.
FX This work was supported by the U.S. Air Force (FA8650-05-D-5807,
   FA8650-090-D-5037) through Universal Technology Corporation and UES Inc.
   subcontract agreements. This paper was recommended by Associate Editor
   E. Alarcon.
NR 36
TC 28
Z9 32
U1 3
U2 22
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 1549-8328
J9 IEEE T CIRCUITS-I
JI IEEE Trans. Circuits Syst. I-Regul. Pap.
PD SEP
PY 2012
VL 59
IS 9
BP 2125
EP 2136
DI 10.1109/TCSI.2012.2185295
PG 12
WC Engineering, Electrical & Electronic
SC Engineering
GA 996QZ
UT WOS:000308109600027
ER

PT J
AU Bond, GG
   Hahn, GL
   Jost, KM
   Storage, T
AF Bond, G. G.
   Hahn, G. L.
   Jost, K. M.
   Storage, T.
TI Prepreg Non-Autoclave Manufacturing Technology: Program Overview and
   Co-Cure Enablers for Disruptive, Pervasive Use
SO SAMPE JOURNAL
LA English
DT Article
AB In 2007, Non-Autoclave Manufacturing Technology was initiated by a Boeing-led team and the US. Government (DARPA) under the guidance of the Air Force to enable disruptive, pervasive use of vacuum-bag-only prepreg for reduced recurring cost and cycle time for primary composite structures. This paper will provide a program overview as well as focusing specifically on composite co-curing technology out of the autoclave. Composite co-cures can be complicated and difficult to repeatedly produce with high quality. Factors that can contribute to these difficulties include autoclave pressure and the flow of the resin. By moving to out-of-autoclave systems, improvements in quality by reducing pressure and resin flow are achievable. Through the DARPA/Boeing co-funded, Air Force guided program Non-Autoclave Manufacturing Technology, two different co-cure designs were evaluated. The first was an existing production co-cure utilizing production tooling and engineering but substituting Cytec's toughened epoxy non-autoclave system 5320-1 for the baseline autoclave system. The second non-autoclave co-cure was a new design for a cooling outer aft duct (COAD) that utilized a novel large-scale tooling concept for the co-cured stiffeners. Non-destructive evaluation (ultrasonic inspection) and visual inspection were conducted on both co-cured structures and demonstrated that reduced resin flow and pressure during cure does improve some aspects of co-cure quality.
C1 [Bond, G. G.; Hahn, G. L.; Jost, K. M.] Boeing Co, Berkeley, MO USA.
   [Storage, T.] USAF, Res Lab, Dayton, OH USA.
RP Bond, GG (reprint author), Boeing Co, Berkeley, MO USA.
OI Bond, Gary/0000-0001-5347-2341
NR 16
TC 4
Z9 4
U1 0
U2 17
PU SAMPE PUBLISHERS
PI COVINA
PA 1161 PARKVIEW DRIVE, COVINA, CA 91722 USA
SN 0091-1062
J9 SAMPE J
JI Sampe J.
PD SEP-OCT
PY 2012
VL 48
IS 5
BP 8
EP 15
PG 8
WC Engineering, Multidisciplinary; Materials Science, Multidisciplinary
SC Engineering; Materials Science
GA 991ZW
UT WOS:000307745400002
ER

PT J
AU Stewart, EC
   Patil, MJ
   Canfield, RA
   Snyder, RD
AF Stewart, Eric C.
   Patil, Mayuresh J.
   Canfield, Robert A.
   Snyder, Richard D.
TI Parametric Representation and Shape Optimization of Flapping Micro Air
   Vehicle Wings
SO INTERNATIONAL JOURNAL OF MICRO AIR VEHICLES
LA English
DT Article
ID UNSTEADY AERODYNAMIC MODEL; PART 2; FLIGHT; HOVER; DESIGN
AB The effects of wing planform on the aerodynamic performance of a rigid wing in forward flapping flight and hovering configurations were investigated in this paper. The planform design space was parameterized using a new, modified Zimmerman method based on low aspect ratio Zimmerman planform designs. The aerodynamic forces on the wing were calculated using Peters' aerodynamics with an assumed inflow coupled with blade element theory. A multiobjective optimization approach was taken to find the best planform designs for three objectives: wing area, peak power input, and an aerodynamic force based on the kinematic configuration - lift for hovering and thrust for forward flight. A gradient-based optimizer and the epsilon-constraint method were used to find the Pareto front of optimal designs with the aerodynamic force as the primary objective function. The choice of primary and secondary objective functions is important in determining the optimal planform. The Pareto optimal planforms for the case when only area is considered as a secondary objective function drastically differ from the optimal planforms when only power is taken as a secondary objective function. As the secondary objective e values change over the design space, so do the optimal planform shapes.
C1 [Stewart, Eric C.; Patil, Mayuresh J.; Canfield, Robert A.] Virginia Polytech Inst & State Univ, Dept Aerosp & Ocean Engn, Blacksburg, VA 24061 USA.
   [Snyder, Richard D.] USAF, Res Lab, Dayton, OH USA.
RP Stewart, EC (reprint author), Virginia Polytech Inst & State Univ, Dept Aerosp & Ocean Engn, Blacksburg, VA 24061 USA.
EM ecstew@vt.edu
RI Patil, Mayuresh/E-4644-2013; Canfield, Robert/C-1798-2012
OI Patil, Mayuresh/0000-0001-9601-2249; Canfield,
   Robert/0000-0003-3679-2815
FU Air Force Research Laboratory [FA8650-09-2-3938]
FX This material is based on research sponsored by Air Force Research
   Laboratory under agreement number FA8650-09-2-3938. The U.S. Government
   is authorized to reproduce and distribute reprints for Governmental
   purposes notwithstanding any copyright notation thereon. The authors
   would like to thank Dr. Raymond Kolonay and Dr. Rakesh K. Kapania for
   their leadership in the Collaborative Center on Multidisciplinary
   Sciences.
NR 35
TC 2
Z9 2
U1 0
U2 6
PU MULTI-SCIENCE PUBL CO LTD
PI BRENTWOOD
PA 5 WATES WAY, BRENTWOOD CM15 9TB, ESSEX, ENGLAND
SN 1756-8293
J9 INT J MICRO AIR VEH
JI Int. J. Micro Air Veh.
PD SEP
PY 2012
VL 4
IS 3
BP 179
EP 202
DI 10.1260/1756-8293.4.3.179
PG 24
WC Engineering, Aerospace
SC Engineering
GA 023UG
UT WOS:000310060800002
ER

PT J
AU Sathish, S
   Welter, JT
   Jata, KV
   Schehl, N
   Boehnlein, T
AF Sathish, Shamachary
   Welter, John T.
   Jata, Kumar V.
   Schehl, Norman
   Boehnlein, Thomas
TI Development of nondestructive non-contact acousto-thermal evaluation
   technique for damage detection in materials
SO REVIEW OF SCIENTIFIC INSTRUMENTS
LA English
DT Article
ID INTERNAL-FRICTION; HEAT DAMAGE; FATIGUE; CRACKS; DISLOCATIONS;
   COMPOSITES; TI-6AL-4V
AB This paper presents the development of a new non-contact acousto-thermal signature (NCATS) non-destructive evaluation technique. The physical basis of the method is the measurement of the efficiency of the material to convert acoustic energy into heat, and a theoretical model has been used to evaluate this. The increase in temperature due to conversion of acoustic energy injected into the material without direct contact was found to depend on the thermal and elastic properties of the material. In addition, it depends on the experimental parameters of the acoustic source power, the distance between sample and acoustic source, and the period of acoustic excitation. Systematic experimental approaches to optimize each of the experimental variables to maximize the observed temperature changes are described. The potential of the NCATS technique to detect microstructural-level changes in materials is demonstrated by evaluating accumulated damage due to plasticity in Ti-6Al-4V and low level thermal damage in polymer matrix composites. The ability of the technique for macroscopic applications in nondestructive evaluation is demonstrated by imaging a crack in an aluminum test sample. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4749245]
C1 [Sathish, Shamachary; Schehl, Norman; Boehnlein, Thomas] Univ Dayton, Res Inst, Struct Integr Div, Dayton, OH 45469 USA.
   [Welter, John T.; Jata, Kumar V.] USAF, Met Ceram & Nondestruct Evaluat Div, Res Lab, Wright Patterson AFB, OH 45433 USA.
RP Sathish, S (reprint author), Univ Dayton, Res Inst, Struct Integr Div, 300 Coll Pk, Dayton, OH 45469 USA.
FU NDE Branch, Air Force Research Laboratory, Dayton, Ohio
   [FA8650-09-D-5224, F33615-03-C-5219]
FX This work was performed as a part of the on-site research in the NDE
   Branch, Air Force Research Laboratory, Dayton, Ohio on contract
   FA8650-09-D-5224 and F33615-03-C-5219. The authors thank Dr. E.
   Lindgren, and Dr. S. Russ for their critical reading and constructive
   comments on the manuscript. Authors thank Mr. E. Klosterman, Mr. R.
   Reibel, and Mr. G. Malott for their help in the optimization of the
   NCATS experimental setup and measurements. Dr. S. Puttanhart and Mr. K.
   Shively are acknowledged for their help with x-ray CT and SEM evaluation
   of the composite specimens.
NR 52
TC 5
Z9 5
U1 0
U2 11
PU AMER INST PHYSICS
PI MELVILLE
PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA
SN 0034-6748
EI 1089-7623
J9 REV SCI INSTRUM
JI Rev. Sci. Instrum.
PD SEP
PY 2012
VL 83
IS 9
AR 095103
DI 10.1063/1.4749245
PG 11
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA 015DW
UT WOS:000309426700062
PM 23020415
ER

PT J
AU Bedford, NM
   Dickerson, MB
   Drummy, LF
   Koerner, H
   Singh, KM
   Vasudev, MC
   Durstock, MF
   Naik, RR
   Steckl, AJ
AF Bedford, Nicholas M.
   Dickerson, Matthew B.
   Drummy, Lawrence F.
   Koerner, Hilmar
   Singh, Kristi M.
   Vasudev, Milana C.
   Durstock, Michael F.
   Naik, Rajesh R.
   Steckl, Andrew J.
TI Nanofiber-Based Bulk-Heterojunction Organic Solar Cells Using Coaxial
   Electrospinning
SO ADVANCED ENERGY MATERIALS
LA English
DT Article
DE coaxial electrospinning; nanofibers; organic photovoltaics; P3HT:PCBM
ID POLYMER PHOTOVOLTAIC CELLS; THIN-FILMS; REGIOREGULAR
   POLY(3-HEXYLTHIOPHENE); ABSORPTION-SPECTRA; SELF-ORGANIZATION;
   CHARGE-TRANSPORT; FIBERS; MORPHOLOGY; EFFICIENCY; FULLERENE
AB Nanofibers consisting of the bulk heterojunction organic photovoltaic (BHJOPV) electron donorelectron acceptor pair poly(3-hexylthiophene):phenyl-C61-butyric acid methyl ester (P3HT:PCBM) are produced through a coaxial electrospinning process. While P3HT:PCBM blends are not directly electrospinnable, P3HT:PCBM-containing fibers are produced in a coaxial fashion by utilizing polycaprolactone (PCL) as an electrospinnable sheath material. Pure P3HT:PCBM fibers are easily obtained after electrospinning by selectively removing the PCL sheath with cyclopentanone (average diameter 120 +/- 30 nm). These fibers are then incorporated into the active layer of a BHJOPV device, which results in improved short-circuit current densities, fill factors, and power-conversion efficiencies (PCE) as compared to thin-film devices of identical chemical composition. The best-performing fiber-based devices exhibit a PCE of 4.0%, while the best thin-film devices have a PCE of 3.2%. This increase in device performance is attributed to the increased in-plane alignment of P3HT polymer chains on the nanoscale, caused by the electrospun fibers, which leads to increased optical absorption and subsequent exciton generation. This methodology for improving device performance of BHJOPVs could also be implemented for other electron donorelectron acceptor systems, as nanofiber formation is largely independent of the PV material.
C1 [Dickerson, Matthew B.; Drummy, Lawrence F.; Koerner, Hilmar; Singh, Kristi M.; Vasudev, Milana C.; Durstock, Michael F.; Naik, Rajesh R.] USAF, Mat & Mfg Directorate, Res Lab, Wright Patterson AFB, OH 45433 USA.
   [Bedford, Nicholas M.] Univ Cincinnati, Dept Chem & Mat Engn, Cincinnati, OH 45221 USA.
   [Bedford, Nicholas M.; Steckl, Andrew J.] Univ Cincinnati, Dept Elect & Comp Engn, Nanoelect Lab, Cincinnati, OH 45221 USA.
RP Naik, RR (reprint author), USAF, Mat & Mfg Directorate, Res Lab, Wright Patterson AFB, OH 45433 USA.
EM rajesh.naik@wpafb.af.mil; a.steckl@uc.edu
OI Steckl, Andrew/0000-0002-1868-4442
FU Air Force Office of Scientific Research; Dayton Area Graduate Studies
   Institute; Office of Science, Office of Basic Energy Sciences, of the US
   Department of Energy [DE-AC02-05CH11231]
FX This work was supported in part by the Air Force Office of Scientific
   Research and Dayton Area Graduate Studies Institute. We would like to
   thank Dr. Alexander Hexemer and Dr. Eric Schaible for guidance, setup
   and data collection at beamline 7.3.3 at Advanced Light Source/Lawrence
   Berkley National Laboratory. The Advanced Light Source is supported by
   the Director, Office of Science, Office of Basic Energy Sciences, of the
   US Department of Energy under Contract No. DE-AC02-05CH11231.
NR 92
TC 25
Z9 26
U1 7
U2 115
PU WILEY-V C H VERLAG GMBH
PI WEINHEIM
PA BOSCHSTRASSE 12, D-69469 WEINHEIM, GERMANY
SN 1614-6832
J9 ADV ENERGY MATER
JI Adv. Energy Mater.
PD SEP
PY 2012
VL 2
IS 9
BP 1136
EP 1144
DI 10.1002/aenm.201100674
PG 9
WC Chemistry, Physical; Energy & Fuels; Materials Science,
   Multidisciplinary; Physics, Applied; Physics, Condensed Matter
SC Chemistry; Energy & Fuels; Materials Science; Physics
GA 003SU
UT WOS:000308632400010
ER

PT J
AU Seversky, LM
   Yin, L
AF Seversky, L. M.
   Yin, L.
TI A Global Parity Measure for Incomplete Point Cloud Data
SO COMPUTER GRAPHICS FORUM
LA English
DT Article
ID SURFACE RECONSTRUCTION; APPROXIMATION
AB Shapes with complex geometric and topological features such as tunnels, neighboring sheets, and cavities are susceptible to undersampling and continue to challenge existing reconstruction techniques. In this work we introduce a new measure for point clouds to determine the likely interior and exterior regions of an object. Specifically, we adapt the concept of parity to point clouds with missing data and introduce the parity map, a global measure of parity over the volume. We first examine how parity changes over the volume with respect to missing data and develop a method for extracting topologically correct interior and exterior crusts for estimating a signed distance field and performing surface reconstruction. We evaluate our approach on real scan data representing complex shapes with missing data. Our parity measure is not only able to identify highly confident interior and exterior regions but also localizes regions of missing data. Our reconstruction results are compared to existing methods and we show that our method faithfully captures the topology and geometry of complex shapes in the presence of missing data.
C1 [Seversky, L. M.] USAF, Res Lab, Informat Directorate, Washington, DC 20330 USA.
   [Seversky, L. M.; Yin, L.] SUNY Binghamton, Binghamton, NY 13902 USA.
RP Seversky, LM (reprint author), USAF, Res Lab, Informat Directorate, Washington, DC 20330 USA.
NR 21
TC 3
Z9 3
U1 0
U2 5
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 0167-7055
EI 1467-8659
J9 COMPUT GRAPH FORUM
JI Comput. Graph. Forum
PD SEP
PY 2012
VL 31
IS 7
BP 2097
EP 2106
DI 10.1111/j.1467-8659.2012.03202.x
PN 1
PG 10
WC Computer Science, Software Engineering
SC Computer Science
GA 015QQ
UT WOS:000309461500012
ER

PT J
AU Zand, B
   Butalia, TS
   Wolfe, WE
   Schoeppner, GA
AF Zand, Behrad
   Butalia, Tarunjit S.
   Wolfe, William E.
   Schoeppner, Greg A.
TI A strain energy based failure criterion for nonlinear analysis of
   composite laminates subjected to triaxial loading
SO JOURNAL OF COMPOSITE MATERIALS
LA English
DT Article
DE Laminated composites; triaxial stress; strain energy; failure theory
ID GRAPHITE EPOXY COMPOSITES; HYDROSTATIC-PRESSURE; UNIDIRECTIONAL
   COMPOSITES; EXERCISE; STRENGTH; BEHAVIOR; GLASS
AB A new strain energy based failure model is developed for fibrous composite laminates under multi-axial loadings, taking into account the effect of hydrostatic stress. A failure mode dependent exponential stiffness reduction model is used to predict material response beyond the initial failure. Predicted mechanical responses and failure envelopes are presented for the 12 benchmark test cases of Part A of the Second World Wide Failure Exercise. The cases cover a wide variety of isotropic, unidirectional and multidirectional laminates under combined in-plane, out-of-plane and triaxial loadings. Both stress-strain curves and the complete failure envelopes were successfully predicted. In some instances, the failure envelopes were open. The predictions together with suitable adjustment of certain parameters are compared with test data in Part B of the Second World Wide Failure Exercise, to be published in Journal of Composite Materials.
C1 [Butalia, Tarunjit S.; Wolfe, William E.] Ohio State Univ, Dept Civil Engn, Columbus, OH 43210 USA.
   [Schoeppner, Greg A.] AFRL, Mat & Mfg Directorate, Wright Patterson AFB, OH USA.
RP Butalia, TS (reprint author), Ohio State Univ, Dept Civil Engn, Columbus, OH 43210 USA.
EM butalia.1@osu.edu
NR 28
TC 6
Z9 6
U1 1
U2 6
PU SAGE PUBLICATIONS LTD
PI LONDON
PA 1 OLIVERS YARD, 55 CITY ROAD, LONDON EC1Y 1SP, ENGLAND
SN 0021-9983
J9 J COMPOS MATER
JI J. Compos Mater.
PD SEP
PY 2012
VL 46
IS 19-20
SI SI
BP 2515
EP 2537
DI 10.1177/0021998312449891
PG 23
WC Materials Science, Composites
SC Materials Science
GA 015EA
UT WOS:000309427100013
ER

PT J
AU O'Pry, JJ
   Russell, IJ
AF O'Pry, Jon Jason
   Russell, I. Jon
TI Inflammation in the Psychiatric Manifestations of Fibromyalgia Syndrome
SO PSYCHIATRIC ANNALS
LA English
DT Article
ID ANTIPOLYMER ANTIBODY; CEREBROSPINAL-FLUID; ANTIOXIDANT STATUS;
   DEPRESSION; SEVERITY; PAIN; PATHOPHYSIOLOGY; HYPOTHESIS; DISORDERS;
   CYTOKINES
C1 [O'Pry, Jon Jason] USAF, Colorado Springs, CO 80840 USA.
   [O'Pry, Jon Jason] San Antonio Mil Med Ctr, San Antonio, TX USA.
   [Russell, I. Jon] Univ Texas Hlth Sci Ctr San Antonio, Div Rheumatol, Dept Med, San Antonio, TX USA.
   [Russell, I. Jon] Fibromyalgia Res & Consulting, San Antonio, TX USA.
RP Russell, IJ (reprint author), 1 Med Pk,14615 San Pedro,Suite 105-220, San Antonio, TX 78232 USA.
EM russell@uthscsa.edu
NR 41
TC 0
Z9 0
U1 0
U2 5
PU SLACK INC
PI THOROFARE
PA 6900 GROVE RD, THOROFARE, NJ 08086 USA
SN 0048-5713
J9 PSYCHIAT ANN
JI Psychiatr. Ann.
PD SEP
PY 2012
VL 42
IS 9
BP 329
EP 337
DI 10.3928/00485713-20120906-06
PG 9
WC Psychiatry
SC Psychiatry
GA 014ZF
UT WOS:000309413800006
ER

PT J
AU Bhat, SS
   Narayanan, RM
   Rangaswamy, M
AF Bhat, Surendra S.
   Narayanan, Ram M.
   Rangaswamy, Muralidhar
TI Design, Performance and Optimization for Multimodal Radar Operation
SO SENSORS
LA English
DT Article
DE multimodal radar; adaptive radar; LFM; HRR profile; bandwidth
   optimization
ID MULTIFUNCTION; RESOLUTION; SIGNAL
AB This paper describes the underlying methodology behind an adaptive multimodal radar sensor that is capable of progressively optimizing its range resolution depending upon the target scattering features. It consists of a test-bed that enables the generation of linear frequency modulated waveforms of various bandwidths. This paper discusses a theoretical approach to optimizing the bandwidth used by the multimodal radar. It also discusses the various experimental results obtained from measurement. The resolution predicted from theory agrees quite well with that obtained from experiments for different target arrangements.
C1 [Bhat, Surendra S.; Narayanan, Ram M.] Penn State Univ, Dept Elect Engn, University Pk, PA 16802 USA.
   [Rangaswamy, Muralidhar] USAF, Res Lab, Dayton, OH 45433 USA.
RP Narayanan, RM (reprint author), Penn State Univ, Dept Elect Engn, University Pk, PA 16802 USA.
EM ssb166@psu.edu; ram@engr.psu.edu; muralidhar.rangaswamy@wpafb.af.mil
NR 23
TC 3
Z9 3
U1 0
U2 2
PU MDPI AG
PI BASEL
PA ST ALBAN-ANLAGE 66, CH-4052 BASEL, SWITZERLAND
SN 1424-8220
J9 SENSORS-BASEL
JI Sensors
PD SEP
PY 2012
VL 12
IS 9
BP 12673
EP 12693
DI 10.3390/s120912673
PG 21
WC Chemistry, Analytical; Electrochemistry; Instruments & Instrumentation
SC Chemistry; Electrochemistry; Instruments & Instrumentation
GA 012XL
UT WOS:000309269900074
ER

PT J
AU Bogosian, V
   Hellgren, EC
   Moody, RW
AF Bogosian, Victor, III
   Hellgren, Eric C.
   Moody, Raymond W.
TI ASSEMBLAGES OF AMPHIBIANS, REPTILES, AND MAMMALS ON AN URBAN MILITARY
   BASE IN OKLAHOMA
SO SOUTHWESTERN NATURALIST
LA English
DT Article
ID ESTIMATING SITE OCCUPANCY; ORNATE BOX TURTLES; TERRAPENE-ORNATA;
   HERPETOFAUNAL INVENTORY; COMMUNITY COMPOSITION; TEXAS; POPULATION;
   CONSERVATION; DISTURBANCE; MANAGEMENT
AB We surveyed Tinker Air Force Base, Oklahoma County, Oklahoma, an urban complex largely dominated by industrial and housing facilities but with habitats for herpetofauna and mammals. Using a variety of sampling techniques, we captured or observed >2,000 organisms on 16 study areas. We tallied 11 species of amphibians (all anurans), 26 species of reptiles, and 24 species of mammals, including several species of conservation concern. Species richness and diversity were predictably higher on green-space areas and were lower on areas surrounding airfield runways.
C1 [Bogosian, Victor, III; Hellgren, Eric C.] So Illinois Univ, Dept Zool, Cooperat Wildlife Res Lab, Carbondale, IL 62901 USA.
   [Moody, Raymond W.] Nat Resource Program, Tinker AFB, OK 73145 USA.
RP Bogosian, V (reprint author), Missouri Dept Conservat, Eagle Bluffs Conservat Area, 6700 W Route K, Columbia, MO 65203 USA.
EM Vic.Bogosian@mdc.mo.gov
OI Hellgren, Eric/0000-0002-3870-472X
FU United States Army Corps of Engineers [W9132-T-07-2-0018]
FX This work was funded by grant W9132-T-07-2-0018 through the United
   States Army Corps of Engineers. Field work was conducted under Southern
   Illinois University Carbondale Institutional Animal Care and Use
   Committee protocol 07-011. The staff at Tinker Air Force Base
   (specifically, J. Krupovage, J. C. Baker, J. McCanne, B. Gilliam, G.
   Hakman, and G. Hart) played supporting roles that made this work
   possible. D. Lesmeister graciously provided Cuddeback field cameras. We
   acknowledge our field technicians (A. Batter, P. Calhoun, M. Cook, J.
   Dierks, M. Gage, R. Karsch, R. Moll, B. Wasserman, B. Watson, and A. M.
   Zebal) for assistance and general good humor.
NR 44
TC 1
Z9 1
U1 1
U2 24
PU SOUTHWESTERN ASSOC NATURALISTS
PI SAN MARCOS
PA SOUTHWEST TEXAS STATE UNIV, DEPT BIOLOGY, 601 UNIVERSITY DR, SAN MARCOS,
   TX 78666 USA
SN 0038-4909
J9 SOUTHWEST NAT
JI Southw. Natural.
PD SEP
PY 2012
VL 57
IS 3
BP 277
EP 284
PG 8
WC Biodiversity Conservation; Ecology
SC Biodiversity & Conservation; Environmental Sciences & Ecology
GA 009JC
UT WOS:000309021100007
ER

PT J
AU Vatansever, F
   Burtovyy, R
   Zdyrko, B
   Ramaratnam, K
   Andrukh, T
   Minko, S
   Owens, JR
   Kornev, KG
   Luzinov, I
AF Vatansever, Fehime
   Burtovyy, Ruslan
   Zdyrko, Bogdan
   Ramaratnam, Karthik
   Andrukh, Taras
   Minko, Sergiy
   Owens, Jeffrey R.
   Kornev, Konstantin G.
   Luzinov, Igor
TI Toward Fabric-Based Flexible Microfluidic Devices: Pointed Surface
   Modification for pH Sensitive Liquid Transport
SO ACS APPLIED MATERIALS & INTERFACES
LA English
DT Article
DE microfluidic devices; fabric; polymer grafting; wicking; yarn; thread
ID SINGLE-MOLECULE EXPERIMENTS; GLYCOL) GRAFTED LAYERS; LOW-COST; POLYMER
   BRUSHES; PAPER; SYSTEMS; POLY(DIMETHYLSILOXANE); NANOPARTICLES; ASSAYS;
   TECHNOLOGIES
AB Microfluidic fiber channels with switchable water transport are fabricated in flexible textile PET/PP materials using a preprogrammed yarn-based fabric and a yarn-selective surface modification method. The developed robust and scalable fabrication method is based on the selective functionalization of the PET yarns with an epoxide containing polymer that is then followed by grafting patterns of different pH-sensitive polymers PAA [poly(acrylic acid)] and P2VP [poly(2-vinyl pyridine)]. The selective functionalization of the fabric yields an array of amphiphilic channels that are constrained by hydrophobic PP boundaries. Aqueous solutions are transported in the amphiphilic channels by capillary forces where the direction of the liquid transport is defined by pH-response of the grafted polymers. The channels are fed with liquid through hydrophilic, pH insensitive PEG [polyethylene glycol] ports. The combination of the PAA and P2VP patterns in the amphiphilic channels is used to create pH-sensitive elements that redirect aqueous liquids toward PAA channels at pH > 4 and toward both PAA and P2VP channels at pH < 4. The system of pH-selective channels in the developed textile based microfluidic chip could find analytical applications and can be used for smart cloth.
C1 [Vatansever, Fehime; Burtovyy, Ruslan; Zdyrko, Bogdan; Ramaratnam, Karthik; Andrukh, Taras; Kornev, Konstantin G.; Luzinov, Igor] Clemson Univ, Dept Mat Sci & Engn, Clemson, SC 29634 USA.
   [Minko, Sergiy] Clarkson Univ, Dept Chem & Bimol Sci, Potsdam, NY 13699 USA.
   [Owens, Jeffrey R.] USAF, Res Lab, Airbase Technol Div, Airbase Sci Branch, Panama City, FL 32403 USA.
RP Luzinov, I (reprint author), Clemson Univ, Dept Mat Sci & Engn, 161 Sirrine Hall, Clemson, SC 29634 USA.
EM luzinov@clemson.edu
RI Minko, Sergiy/A-9458-2009; 
OI Minko, Sergiy/0000-0002-7747-9668; Vatansever,
   Fehime/0000-0001-6355-0956
FU Clemson Center for Advanced Engineering Fibers and Films; National
   Science Foundation [CMMI-0826067, CMMI-0825773]; U.S. Air Force
   [FA8650-09-D-5900]
FX The research presented was supported by the Clemson Center for Advanced
   Engineering Fibers and Films, the National Science Foundation (Grant
   Nos. CMMI-0826067 and CMMI-0825773), and the U.S. Air Force (Contract
   No. FA8650-09-D-5900).
NR 56
TC 15
Z9 15
U1 5
U2 65
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 SEP
PY 2012
VL 4
IS 9
BP 4541
EP 4548
DI 10.1021/am3008664
PG 8
WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary
SC Science & Technology - Other Topics; Materials Science
GA 010MZ
UT WOS:000309099800017
PM 22873785
ER

PT J
AU Perlovsky, LI
   Levine, DS
AF Perlovsky, Leonid I.
   Levine, Daniel S.
TI The Drive for Creativity and the Escape from Creativity: Neurocognitive
   Mechanisms
SO COGNITIVE COMPUTATION
LA English
DT Article
DE Creativity; Brain; Language; Emotion; Cognitive dissonance; Heuristics
ID DECISION-MAKING; NEURAL DYNAMICS; SELF; RECOGNITION; COGNITION;
   LANGUAGE; EMOTION; BRAIN; CONSCIOUSNESS; COMMUNICATION
AB We discuss cognitive bases for creative versus non-creative knowledge acquisition and suggest neural substrates for these processes. Cognitive mechanisms driving the human mind both toward and away from creativity are related to ancient mechanisms of adaptive behavior. A paradoxical role of language is discussed: on the one hand, language makes higher cognition possible; on the other, language enables heuristic thinking, using millennial truths instead of original creative thinking. Creativity requires overcoming cognitive dissonances and choosing task relevance over salience. Functions of conceptual, emotional, conscious, and unconscious mechanisms are analyzed and related to various brain regions. Future research directions are discussed.
C1 [Levine, Daniel S.] Univ Texas Arlington, Dept Psychol, Arlington, TX 76019 USA.
   [Perlovsky, Leonid I.] Harvard Univ, Athinoula A Martinos Ctr Biomed Imaging, Charlestown, MA USA.
   [Perlovsky, Leonid I.] USAF, Res Lab, Dayton, OH USA.
RP Levine, DS (reprint author), Univ Texas Arlington, Dept Psychol, 501 S Nedderman Dr, Arlington, TX 76019 USA.
EM levine@uta.edu
NR 98
TC 8
Z9 8
U1 2
U2 16
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 1866-9956
EI 1866-9964
J9 COGN COMPUT
JI Cogn. Comput.
PD SEP
PY 2012
VL 4
IS 3
SI SI
BP 292
EP 305
DI 10.1007/s12559-012-9154-3
PG 14
WC Computer Science, Artificial Intelligence; Neurosciences
SC Computer Science; Neurosciences & Neurology
GA 006KG
UT WOS:000308817500008
ER

PT J
AU Allen, C
   Toulson, E
   Edwards, T
   Lee, T
AF Allen, Casey
   Toulson, Elisa
   Edwards, Tim
   Lee, Tonghun
TI Application of a novel charge preparation approach to testing the
   autoignition characteristics of JP-8 and camelina hydroprocessed
   renewable jet fuel in a rapid compression machine
SO COMBUSTION AND FLAME
LA English
DT Article
DE Autoignition; JP-8; Hydroprocessed renewable jet fuel; Rapid compression
   machine
ID ELEVATED PRESSURES; SURROGATE MIXTURES; CHEMICAL-KINETICS; AVIATION
   FUEL; SHOCK-TUBE; COMBUSTION; IGNITION; MODEL; TEMPERATURES; OXIDATION
AB A variety of new, alternative jet fuels are being considered as replacements for conventional petroleumderived jet fuels, and the autoignition chemistry of these fuels are of prime interest. However, traditional batch-based premixture preparation approaches used in chemical kinetics studies are burdened by the low volatility of these fuels. In this work, a new charge preparation approach is described and characterized in which a fuel and air premixture is created directly in the test chamber of a rapid compression machine. The approach relies on a fuel injector to load a small quantity of fuel into the test chamber with high resolution. Preparation of the test charge directly in the device rather than in a mixing vessel reduces the mixture pressure, and hence the fuel partial pressure and mixture temperature requirements to avoid thermal decomposition of the fuel. Gas chromatography/mass spectrometry is used to confirm that an accurately known mass of JP-8 jet fuel is injected into the rapid compression machine, and that all components of the fuel are evaporated and homogeneously mixed within 2 min of the fuel injection, for temperatures from 105 degrees C to 145 degrees C. Ignition delays for JP-8 in air are measured at low temperatures (670-750 K) and low pressures (7 and 10 bar) and the measurements are compared with literature data. The autoignition characteristics of the bio-based camelina hydroprocessed renewable jet fuel are also measured and contrasted with those of JP-8. Under similar compressed conditions, the camelina hydroprocessed renewable jet fuel ignition properties are distinct from JP-8, which provides motivation for pursuing new test strategies to elicit the autoignition chemistry of alternative jet fuels and other nonvolatile fuels. (c) 2012 The Combustion Institute. Published by Elsevier Inc. All rights reserved.
C1 [Allen, Casey; Toulson, Elisa; Lee, Tonghun] Michigan State Univ, Dept Mech Engn, E Lansing, MI 48824 USA.
   [Edwards, Tim] USAF, Res Lab, Wright Patterson AFB, OH 45433 USA.
RP Lee, T (reprint author), Michigan State Univ, Dept Mech Engn, 2555 Engn Bldg, E Lansing, MI 48824 USA.
EM tonghun@msu.edu
RI Lee, Tonghun/A-5263-2014
FU Defense Logistics Agency (DLA) [SP4701-11-C-0011]; US Department of
   Energy [DE-FC2607NT43278]
FX The authors gratefully acknowledge the financial support of the Defense
   Logistics Agency (DLA) under contract SP4701-11-C-0011 and of the US
   Department of Energy for previously funding construction of the rapid
   compression machine (Contract DE-FC2607NT43278). Additionally, the
   authors acknowledge Michigan State University - RTSF - Mass Spectrometry
   Core for graciously providing access to the GC/MS instrumentation.
NR 26
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Z9 14
U1 0
U2 17
PU ELSEVIER SCIENCE INC
PI NEW YORK
PA 360 PARK AVE SOUTH, NEW YORK, NY 10010-1710 USA
SN 0010-2180
J9 COMBUST FLAME
JI Combust. Flame
PD SEP
PY 2012
VL 159
IS 9
BP 2780
EP 2788
DI 10.1016/j.combustflame.2012.03.019
PG 9
WC Thermodynamics; Energy & Fuels; Engineering, Multidisciplinary;
   Engineering, Chemical; Engineering, Mechanical
SC Thermodynamics; Energy & Fuels; Engineering
GA 999AK
UT WOS:000308281300002
ER

PT J
AU Rankin, BA
   Blunck, DL
   Katta, VR
   Stouffer, SD
   Gore, JP
AF Rankin, Brent A.
   Blunck, David L.
   Katta, Viswanath R.
   Stouffer, Scott D.
   Gore, Jay P.
TI Experimental and computational infrared imaging of bluff body stabilized
   laminar diffusion flames
SO COMBUSTION AND FLAME
LA English
DT Article
DE Flame radiation; Flame stabilization; Laminar flames; Centerbody;
   Non-intrusive measurement; Infrared imaging
ID RADIATION; SOOT
AB The concept of comparing measured and computed images is extended to the mid-infrared spectrum to provide a non-intrusive technique for studying flames. Narrowband radiation intensity measurements of steady and unsteady bluff body stabilized laminar ethylene diffusion flames are acquired using an infrared camera. Computational infrared images are rendered by solving the radiative transfer equation for parallel lines-of-sight through the flame and using a narrowband radiation model with computed scalar values. Qualitative and quantitative comparisons of the measured and computed infrared images provide insights into the flame stabilization region and beyond. The unique shapes and sizes of the flames observed in the measured and computed infrared images are similar with a few exceptions which are shown to be educational. The important differences occur in the flame stabilization region suggesting improvements in thermal control of the experiment and soot formation and heat loss models. (c) 2012 The Combustion Institute. Published by Elsevier Inc. All rights reserved.
C1 [Rankin, Brent A.; Gore, Jay P.] Purdue Univ, W Lafayette, IN 47907 USA.
   [Blunck, David L.] USAF, Res Lab, Wright Patterson AFB, OH 45433 USA.
   [Katta, Viswanath R.] Innovat Sci Solut Inc, Dayton, OH 45440 USA.
   [Stouffer, Scott D.] Univ Dayton, Res Inst, Dayton, OH 45469 USA.
RP Rankin, BA (reprint author), Purdue Univ, 500 Allison Rd, W Lafayette, IN 47907 USA.
EM brankin@purdue.edu
RI Rankin, Brent/A-1598-2017
OI Rankin, Brent/0000-0002-5967-9527
FU Innovative Scientific Solutions Incorporated; Strategic Environmental
   Research and Development Program (SERDP)
FX This work was funded through Innovative Scientific Solutions
   Incorporated (Dr. Larry Goss as contract monitor). The Strategic
   Environmental Research and Development Program (SERDP, Bruce Sartwell)
   and Dr. Mel Roquemore are gratefully acknowledged for financial and
   technical support, respectively.
NR 13
TC 4
Z9 4
U1 1
U2 15
PU ELSEVIER SCIENCE INC
PI NEW YORK
PA 360 PARK AVE SOUTH, NEW YORK, NY 10010-1710 USA
SN 0010-2180
J9 COMBUST FLAME
JI Combust. Flame
PD SEP
PY 2012
VL 159
IS 9
BP 2841
EP 2843
DI 10.1016/j.combustflame.2012.03.022
PG 3
WC Thermodynamics; Energy & Fuels; Engineering, Multidisciplinary;
   Engineering, Chemical; Engineering, Mechanical
SC Thermodynamics; Energy & Fuels; Engineering
GA 999AK
UT WOS:000308281300008
ER

PT J
AU Kostka, S
   Lynch, AC
   Huelskamp, BC
   Kiel, BV
   Gord, JR
   Roy, S
AF Kostka, Stanislav
   Lynch, Amy C.
   Huelskamp, Bethany C.
   Kiel, Barry V.
   Gord, James R.
   Roy, Sukesh
TI Characterization of flame-shedding behavior behind a bluff-body using
   proper orthogonal decomposition
SO COMBUSTION AND FLAME
LA English
DT Article
DE Vortex shedding; Chemiluminescence; Proper orthogonal decomposition
   (POD)
ID TURBULENT PREMIXED FLAMES; COHERENT STRUCTURES; POD; DYNAMICS; STEADY;
   FLOWS
AB Researchers have been interested in bluff-body flame-shedding dynamics and the effects of vortex shedding for the past few decades. The objective of the present study is to quantify various modes of vortex shedding as flames transition from near-blow-off to stable and acoustically coupled conditions. Two modes of shedding, Kelvin-Helmholtz and Von-Karman, play a significant role in flame stability. Previous studies have been limited to visual identification of the contributions from each of these modes without quantitatively addressing the contribution from each mode as the flame transitions from blow-off to a stable or acoustically coupled state. The present study is focused on quantitatively identifying the contribution of various instability modes for three 1.5-in, flame-holder configurations and is performed in an augmentor test rig employing propane and air as fuel and oxidizer, respectively. The quantitative identification of instability modes is performed by implementing proper orthogonal decomposition (POD) on high-speed chemiluminescence imaging for various flame configurations. The application of POD provides an objective means of examining contributions from asymmetric, symmetric, and uncorrelated spatial shedding modes. To determine trends, equivalence ratios are set to 1.1 and then stepped down until blow-off. Acoustically coupled flames are observed to be dominated by contributions from the symmetric shedding mode. As flames decouple from rig acoustics, they exhibit increased combinations of asymmetric and uncorrelated shedding behavior, depending on flow conditions. The methodology can also be extended to other measurement techniques such as high-speed particle-image velocimetry, planar laser-induced fluorescence, and numerical simulations as a means of studying bluff-body flames. (C) 2012 The Combustion Institute. Published by Elsevier Inc. All rights reserved.
C1 [Kostka, Stanislav; Roy, Sukesh] Spectral Energies LLC, Dayton, OH 45431 USA.
   [Lynch, Amy C.; Kiel, Barry V.; Gord, James R.] USAF, Res Lab, Prop Directorate, Wright Patterson AFB, OH 45433 USA.
   [Huelskamp, Bethany C.] Innovat Sci Solut Inc, Dayton, OH 45440 USA.
RP Kostka, S (reprint author), Spectral Energies LLC, 5100 Springfield St,Suite 301, Dayton, OH 45431 USA.
EM stanislavkostka@snet.net
FU internal R&D source of Spectral Energies, LLC; Air Force Research
   Laboratory [FA8650-10-C-2008, FA8650-09-C-2946]; Air Force Office of
   Scientific Research
FX The authors would like to thank Steve Britton and Dwight Fox of ISSI for
   their support and assistance and the technicians at the Air Force
   Research Laboratory who helped with facilities and equipment operation.
   Funding for this research was provided by the internal R&D source of
   Spectral Energies, LLC, by the Air Force Research Laboratory under
   Contract Nos. FA8650-10-C-2008 and FA8650-09-C-2946, and by the Air
   Force Office of Scientific Research (Dr. Julian Tishkoff, Program
   Manager).
NR 40
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U1 0
U2 14
PU ELSEVIER SCIENCE INC
PI NEW YORK
PA 360 PARK AVE SOUTH, NEW YORK, NY 10010-1710 USA
SN 0010-2180
J9 COMBUST FLAME
JI Combust. Flame
PD SEP
PY 2012
VL 159
IS 9
BP 2872
EP 2882
DI 10.1016/j.combustflame.2012.03.021
PG 11
WC Thermodynamics; Energy & Fuels; Engineering, Multidisciplinary;
   Engineering, Chemical; Engineering, Mechanical
SC Thermodynamics; Energy & Fuels; Engineering
GA 999AK
UT WOS:000308281300011
ER

PT J
AU Richey, PA
   Klesges, RC
   Talcott, GW
   Debon, M
   Womack, C
   Thomas, F
   Hryshko-Mullen, A
AF Richey, Phyllis A.
   Klesges, Robert C.
   Talcott, Gerald W.
   DeBon, Margaret
   Womack, Catherine
   Thomas, Fridtjof
   Hryshko-Mullen, Ann
TI Efficacy of a smoking quit line in the military: Baseline design and
   analysis
SO CONTEMPORARY CLINICAL TRIALS
LA English
DT Article
DE Randomized controlled clinical trial; Cigarette smoking; Smoking
   cessation intervention; Tobacco quit lines; Proactive intervention;
   Military
ID CURRENT CIGARETTE-SMOKING; UNITED-STATES; ADULTS; MEN
AB Thirty percent of all military personnel smoke cigarettes. Because of the negative health consequences and their impact on physical fitness, overall health, and military readiness, the Department of Defense has identified the reduction of tobacco use as a priority of US military forces. This study aims to evaluate the one-year efficacy of a proactive versus reactive smoking quit line in the US military with adjunctive nicotine replacement therapy (NRT) in both groups. This paper reports on the baseline variables of the first 1000 participants randomized, the design, and proposed analysis of the randomized two-arm clinical trial "Efficacy of a Tobacco Quit Line in the Military". Participants are adult smokers who are Armed Forces Active Duty personnel, retirees, Reservist, National Guard and family member healthcare beneficiaries. All participants are randomized to either the Counselor Initiated (proactive) group, receiving 6 counseling sessions in addition to an 8-week supply of NRT, or the Self-Paced (reactive) group, in which they may call the quit line themselves to receive the same counseling sessions, in addition to a 2-week supply of NRT. The primary outcome measure of the study is self-reported smoking abstinence at 1-year follow-up. Results from this study will be the first to provide evidence for the efficacy of an intensive Counselor Initiated quit line with provided NRT in military personnel and could lead to dissemination throughout the US Air Force, the armed forces population as a whole and ultimately to civilian personnel that do not have ready access to preventive health services. (C) 2012 Elsevier Inc. All rights reserved.
C1 [Richey, Phyllis A.] Univ Tennessee, Hlth Sci Ctr, Dept Prevent Med, Memphis, TN 38105 USA.
   [Hryshko-Mullen, Ann] USAF, Wilford Hall Med Crr, Washington, DC USA.
RP Richey, PA (reprint author), Univ Tennessee, Hlth Sci Ctr, Dept Prevent Med, 600 Jefferson Ave,Room 336, Memphis, TN 38105 USA.
EM prichey@uthsc.edu
FU National Heart Lung and Blood Institute [HL-053478]
FX This study is supported by HL-053478 from the National Heart Lung and
   Blood Institute.
NR 21
TC 3
Z9 3
U1 0
U2 4
PU ELSEVIER SCIENCE INC
PI NEW YORK
PA 360 PARK AVE SOUTH, NEW YORK, NY 10010-1710 USA
SN 1551-7144
J9 CONTEMP CLIN TRIALS
JI Contemp. Clin. Trials
PD SEP
PY 2012
VL 33
IS 5
BP 959
EP 968
DI 10.1016/j.cct.2012.04.009
PG 10
WC Medicine, Research & Experimental; Pharmacology & Pharmacy
SC Research & Experimental Medicine; Pharmacology & Pharmacy
GA 995XY
UT WOS:000308049800014
PM 22561390
ER

PT J
AU Andrews, R
AF Andrews, Raymond
TI Theophilia
SO GEORGIA REVIEW
LA English
DT Article
C1 [Andrews, Raymond] USAF, Washington, DC USA.
   [Andrews, Raymond] Michigan State Univ, E Lansing, MI 48824 USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU UNIV GEORGIA
PI ATHENS
PA GEORGIA REVIEW, ATHENS, GA 30602 USA
SN 0016-8386
J9 GEORGIA REV
JI GA. Rev.
PD FAL
PY 2012
VL 66
IS 3
SI SI
BP 583
EP 596
PG 14
WC Literary Reviews
SC Literature
GA 014MQ
UT WOS:000309380300037
ER

PT J
AU Fleming, TP
   Lambrecht, MR
   Mardahl, PJ
   Keisling, JD
AF Fleming, Timothy P.
   Lambrecht, Michael R.
   Mardahl, Peter J.
   Keisling, John D.
TI A High-Efficiency Megawatt-Class Nonrelativistic Magnetron
SO IEEE TRANSACTIONS ON PLASMA SCIENCE
LA English
DT Article
DE Conventional magnetron; high-power microwave; mode competition
AB Numerical simulations of a prototype conventional magnetron capable of an RF output power exceeding 1.3 MW at peak efficiency greater than 87% for relatively low diode voltages of similar to 40 kV are presented. Virtual prototyping of the magnetron design is carried out on massively parallel architecture utilizing the 3-D improved concurrent electromagnetic particle-in-cell code. Simulations demonstrate that the magnetron is capable of stable and robust oscillations in the pi mode at saturation with negligible mode competition at 912 MHz over a range of magnetic fields extending from B = 0.18 T to B = 0.275 T and voltages ranging from 37-56 kV. RF Output power ranged from 400 kW-1.5 MW over these voltages with efficiencies typically above 85%. Oscillations in the pi mode follow the Buneman-Hartree resonance curve for all magnetic fields sampled with a window of pi-mode oscillations typically extending over 6 kV. Electron back bombardment of the cathode as well as collisions with the slow wave structure acted as major loss mechanisms.
C1 [Fleming, Timothy P.; Lambrecht, Michael R.; Mardahl, Peter J.] USAF, Res Lab, Albuquerque, NM 87101 USA.
   [Keisling, John D.] Sci Applicat Int Corp, Mclean, VA 22102 USA.
RP Fleming, TP (reprint author), USAF, Res Lab, Albuquerque, NM 87101 USA.
NR 13
TC 3
Z9 3
U1 0
U2 2
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 0093-3813
J9 IEEE T PLASMA SCI
JI IEEE Trans. Plasma Sci.
PD SEP
PY 2012
VL 40
IS 9
BP 2112
EP 2118
DI 10.1109/TPS.2012.2205274
PG 7
WC Physics, Fluids & Plasmas
SC Physics
GA 004DF
UT WOS:000308659600002
ER

PT J
AU Andreev, AD
   Hendricks, KJ
AF Andreev, Andrey D.
   Hendricks, Kyle J.
TI Metamaterial-Like Cathodes in Multicavity Magnetrons
SO IEEE TRANSACTIONS ON PLASMA SCIENCE
LA English
DT Article
DE Cathode; magnetron; metamaterials; microwaves
AB This paper presents the results of computer simulations performed for exploring and developing new methods, which may allow enhancing operational parameters of multicavity magnetrons through using the metal-thin-wire (MTW) and the metal-split-ring metamaterial-like structures as cold (nonthermionic) cathodes. It is demonstrated by the particle-in-cell simulations of a generic ten-vane nonrelativistic ultrahigh-frequency-band heavily strapped magnetron that the output microwave power and the start-up time of this magnetron are significantly improved by replacing either a solid or a transparent cold cathode by, for example, a bulk MTW metamaterial-like structure formed as an array of individual wires directed parallel to the axis of the magnetron (rodded cathode).
C1 [Andreev, Andrey D.] Raytheon Ktech, Directed Energy Div, Adv Secur & Directed Energy Syst, Raytheon Missile Syst, Albuquerque, NM 87123 USA.
   [Hendricks, Kyle J.] USAF, Res Lab AFRL RDHPS, High Power Microwave Div, Directed Energy Directorate, Kirtland AFB, NM 87117 USA.
RP Andreev, AD (reprint author), Raytheon Ktech, Directed Energy Div, Adv Secur & Directed Energy Syst, Raytheon Missile Syst, Albuquerque, NM 87123 USA.
EM aandreev@ktech.com; kyle.hendricks@kirtland.af.mil
NR 17
TC 3
Z9 3
U1 0
U2 3
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 0093-3813
J9 IEEE T PLASMA SCI
JI IEEE Trans. Plasma Sci.
PD SEP
PY 2012
VL 40
IS 9
BP 2267
EP 2273
DI 10.1109/TPS.2012.2206615
PG 7
WC Physics, Fluids & Plasmas
SC Physics
GA 004DF
UT WOS:000308659600024
ER

PT J
AU Burke, S
   Bethel, JW
   Britt, AF
AF Burke, Sloane
   Bethel, Jeffrey W.
   Britt, Amber Foreman
TI Assessing Disaster Preparedness among Latino Migrant and Seasonal
   Farmworkers in Eastern North Carolina
SO INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH
LA English
DT Article
DE disaster preparedness; Latino migrant and seasonal farmworkers; MSFW
ID EMERGENCY PREPAREDNESS; CLIMATE-CHANGE; HEALTH; VULNERABILITY;
   TRANSLATION; IMMIGRANTS
AB Natural disasters including hurricanes, floods, earthquakes, tornadoes, and fires often involve substantial physical and mental impacts on affected populations and thus are public health priorities. Limited research shows that vulnerable populations such as the low-income, socially isolated migrant and seasonal farmworkers (MSFW) are particularly susceptible to the effects of natural disasters. This research project assessed the awareness, perceived risk, and practices regarding disaster preparedness and response resources and identified barriers to utilization of community and government services during or after a natural disaster among Latino MSFWs' and their families. Qualitative (N = 21) focus groups (3) and quantitative (N = 57) survey methodology was implemented with Latino MSFWs temporarily residing in rural eastern North Carolina to assess perceived and actual risk for natural disasters. Hurricanes were a top concern among the sample population, many participants shared they lacked proper resources for an emergency (no emergency kit in the house, no evacuation plan, no home internet, a lack of knowledge of what should be included in an emergency kit, etc.). Transportation and language were found to be additional barriers. Emergency broadcasts in Spanish and text message alerts were identified by the population to be helpful for disaster alerts. FEMA, American Red Cross, local schools and the migrant clinic were trusted places for assistance and information. In summary, tailored materials, emergency alerts, text messages, and news coverage concerning disaster threats should be provided in the population's native language and when feasible delivered in a culturally appropriate mechanism such as "charlas" (talks) and brochures.
C1 [Burke, Sloane] Calif State Univ Northridge, Dept Hlth Sci, Northridge, CA 91330 USA.
   [Bethel, Jeffrey W.] Oregon State Univ, Coll Publ Hlth & Human Sci, Corvallis, OR 97331 USA.
   [Britt, Amber Foreman] USAF, BSC USAFA, Colorado Springs, CO 80911 USA.
RP Burke, S (reprint author), Calif State Univ Northridge, Dept Hlth Sci, Northridge, CA 91330 USA.
EM sloane.burke@csun.edu; Jeff.Bethel@oregonstate.edu; uncamfo@gmail.com
FU National Institute on Minority Health and Health Disparities of the
   National Institutes of Health [P20MD003938]
FX The authors greatly acknowledge Steve Davis and Jesus Estrada and family
   for their support of this project. The authors also humbly acknowledge
   the migrant farmworkers who work tirelessly in support of the
   agricultural industry. Research reported in this publication was
   partially supported by the National Institute on Minority Health and
   Health Disparities of the National Institutes of Health under Award
   Number P20MD003938. The content is solely the responsibility of the
   authors and does not necessarily represent the official views of the
   National Institutes of Health.
NR 40
TC 6
Z9 6
U1 1
U2 38
PU MDPI AG
PI BASEL
PA POSTFACH, CH-4005 BASEL, SWITZERLAND
SN 1660-4601
J9 INT J ENV RES PUB HE
JI Int. J. Environ. Res. Public Health
PD SEP
PY 2012
VL 9
IS 9
BP 3115
EP 3133
DI 10.3390/ijerph9093115
PG 19
WC Environmental Sciences; Public, Environmental & Occupational Health
SC Environmental Sciences & Ecology; Public, Environmental & Occupational
   Health
GA 012XP
UT WOS:000309270300007
PM 23202674
ER

PT J
AU Bilitza, D
   Brown, SA
   Wang, MY
   Souza, JR
   Roddy, PA
AF Bilitza, Dieter
   Brown, Steven A.
   Wang, Mathew Y.
   Souza, Jonas R.
   Roddy, Patrick A.
TI Measurements and IRI model predictions during the recent solar minimum
SO JOURNAL OF ATMOSPHERIC AND SOLAR-TERRESTRIAL PHYSICS
LA English
DT Article
DE IRI; Solar minimum; Ionosonde; C/NOFS
ID INTERNATIONAL REFERENCE IONOSPHERE; HEIGHT
AB Cycle 23 was exceptional in that it lasted almost two years longer than its predecessors and in that it ended in an extended minimum period that proved all predictions wrong. Comparisons of the International Reference Ionosphere (IRI) with CHAMP and GRACE in-situ measurements of electron density during the minimum have revealed significant discrepancies at 400-500 km altitude (Luhr and Xiong, 2010). Our study investigates the causes for these discrepancies with the help of ionosonde and Planar Langmuir Probe (PLP) data from the Communications/Navigation Outage Forecasting System (C/NOFS) satellite. Our C/NOFS comparisons confirm the earlier CHAMP and GRACE results. But the ionosonde measurements of the F-peak plasma frequency (foF2) show generally good agreement throughout the whole solar cycle. At mid-latitude stations yearly averages of the data-model difference are within 10% and at low latitudes stations within 20%. The 60-70% differences found at 400-500 km altitude are not seen at the F peak. We will discuss how these seemingly contradicting results from the ionosonde and insitu data-model comparisons can be explained and which parameters need to be corrected in the IRI model. (C) 2012 Elsevier Ltd. All rights reserved.
C1 [Bilitza, Dieter; Brown, Steven A.; Wang, Mathew Y.] George Mason Univ, Space Weather Lab, Fairfax, VA 22030 USA.
   [Bilitza, Dieter] NASA GSFC, Heliospher Lab, Greenbelt, MD 20771 USA.
   [Souza, Jonas R.] Inst Nacl Pesquisas Espaciais, BR-12201 Sao Jose Dos Campos, SP, Brazil.
   [Roddy, Patrick A.] USAF, Space Vehicles Directorate, Res Lab, Hanscom Afb, MA USA.
RP Bilitza, D (reprint author), George Mason Univ, Space Weather Lab, Fairfax, VA 22030 USA.
EM dbilitza@gmu.edu; jonas@dae.inpe.br; Patrick.Roddy@hanscom.af.mil
RI Souza, Jonas/B-3514-2013
FU NASA [NNX09AJ74G]; NSF [ATM-0819440]
FX DB and SB acknowledge support through NASA grant NNX09AJ74G and NSF
   grant ATM-0819440. The ionosonde data were obtained from NOAA's National
   Geophysical Data Center except for the Brazilian data, which were
   provided by JRS.
NR 19
TC 38
Z9 39
U1 0
U2 6
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 1364-6826
J9 J ATMOS SOL-TERR PHY
JI J. Atmos. Sol.-Terr. Phys.
PD SEP
PY 2012
VL 86
BP 99
EP 106
DI 10.1016/j.jastp.2012.06.010
PG 8
WC Geochemistry & Geophysics; Meteorology & Atmospheric Sciences
SC Geochemistry & Geophysics; Meteorology & Atmospheric Sciences
GA 013GS
UT WOS:000309294500012
ER

PT J
AU Gallagher, JC
   Oppenheimer, MW
AF Gallagher, John C.
   Oppenheimer, Michael W.
TI An Improved Evolvable Oscillator and Basis Function Set for Control of
   an Insect-Scale Flapping-Wing Micro Air Vehicle
SO JOURNAL OF COMPUTER SCIENCE AND TECHNOLOGY
LA English
DT Article
DE evolvable and adaptive hardware; micro air vehicle; evolutionary
   algorithm
AB This paper introduces an improved evolvable and adaptive hardware oscillator design capable of supporting adaptation intended to restore control precision in damaged or imperfectly manufactured insect-scale flapping-wing micro air vehicles. It will also present preliminary experimental results demonstrating that previously used basis function sets may have been too large and that significantly improved learning times may be achieved by judiciously culling the oscillator search space. The paper will conclude with a discussion of the application of this adaptive, evolvable oscillator to full vehicle control as well as the consideration of longer term goals and requirements.
C1 [Gallagher, John C.] Wright State Univ, Dept Comp Sci & Engn, Dayton, OH 45435 USA.
   [Oppenheimer, Michael W.] USAF, Control Sci Branch, Res Lab, Wright Patterson AFB, OH 45433 USA.
RP Gallagher, JC (reprint author), Wright State Univ, Dept Comp Sci & Engn, Dayton, OH 45435 USA.
EM john.gallagher@wright.edu; michael.oppenheimer@wpafb.af.mil
NR 24
TC 7
Z9 7
U1 0
U2 10
PU SCIENCE PRESS
PI BEIJING
PA 16 DONGHUANGCHENGGEN NORTH ST, BEIJING 100717, PEOPLES R CHINA
SN 1000-9000
EI 1860-4749
J9 J COMPUT SCI TECH-CH
JI J. Comput. Sci. Technol.
PD SEP
PY 2012
VL 27
IS 5
SI SI
BP 966
EP 978
DI 10.1007/s11390-012-1277-1
PG 13
WC Computer Science, Hardware & Architecture; Computer Science, Software
   Engineering
SC Computer Science
GA 011VE
UT WOS:000309193600005
ER

PT J
AU Siddiqui, JJ
   Phillips, JD
   Leedy, K
   Bayraktaroglu, B
AF Siddiqui, Jeffrey J.
   Phillips, Jamie D.
   Leedy, Kevin
   Bayraktaroglu, Burhan
TI Illumination instabilities in ZnO/HfO2 thin-film transistors and
   influence of grain boundary charge
SO JOURNAL OF MATERIALS RESEARCH
LA English
DT Review
AB The illumination instabilities of nanocrystalline ZnO thin-film transistors (TFT) with HfO2 gate dielectrics are reported via zero gate bias multiwave length illumination stress method. TFT I-D-V-G curves exhibit a negative threshold voltage shift together with an increase in I-D off current and increase in subthreshold slope with increasing photon energy and illumination time. Analysis of transistor characteristics indicates that one component governing negative threshold voltage shifts is a decrease in grain boundary-trapped charge areal density due to illumination. This relationship can be explained by conduction based on thermionic emission over potential barriers formed at the ZnO crystallite boundaries. I-D off-state current trends with photon energy in a manner consistent with exponentially decreasing absorption below the conduction band edge.
C1 [Siddiqui, Jeffrey J.; Phillips, Jamie D.] Univ Michigan, Dept Elect Engn & Comp Sci, Ann Arbor, MI 48109 USA.
   [Leedy, Kevin; Bayraktaroglu, Burhan] USAF, Res Lab, Dayton, OH 45433 USA.
RP Siddiqui, JJ (reprint author), Univ Michigan, Dept Elect Engn & Comp Sci, Ann Arbor, MI 48109 USA.
EM jjameel@umich.edu
RI Phillips, Jamie/E-9394-2010
NR 12
TC 4
Z9 4
U1 1
U2 20
PU CAMBRIDGE UNIV PRESS
PI NEW YORK
PA 32 AVENUE OF THE AMERICAS, NEW YORK, NY 10013-2473 USA
SN 0884-2914
J9 J MATER RES
JI J. Mater. Res.
PD SEP
PY 2012
VL 27
IS 17
BP 2199
EP 2204
DI 10.1557/jmr.2012.173
PG 6
WC Materials Science, Multidisciplinary
SC Materials Science
GA 999RP
UT WOS:000308332200004
ER

PT J
AU Grady, NR
   Pitz, RW
   Carter, CD
   Hsu, KY
   Ghodke, C
   Menon, S
AF Grady, Nathan R.
   Pitz, Robert W.
   Carter, Campbell D.
   Hsu, Kuang-Yu
   Ghodke, Chaitanya
   Menon, Suresh
TI Supersonic Flow over a Ramped-Wall Cavity Flame Holder with an Upstream
   Strut
SO JOURNAL OF PROPULSION AND POWER
LA English
DT Article
ID LARGE-EDDY SIMULATION; HYDROXYL-TAGGING-VELOCIMETRY; STABILIZED FLAMES;
   FUEL-INJECTION; COMBUSTION
AB Nonreacting supersonic airflow over a wall cavity with a rear ramp both with and without an upstream strut is studied with hydroxyl-tagging velocimetry and large-eddy simulation (LES). An OH grid formed by crossing 11 lines by 11 lines is used to obtain velocities at similar to 120 grid points. The OH grid is tracked with a new template-matching method that determines both linear and rotational displacements. Mean and rms fluctuation velocity profiles both with and without the strut are analyzed and compared with results obtained from LES, and there is good overall agreement between the two methods. The experimental and LES results demonstrate that installing an upstream strut increased cavity recirculation along the centerline relative to the no-strut configuration. In addition, the shear layer is observed to grow more quickly and impinge higher on the ramp wall. Some disagreements are found in the measured and predicted propagation of the weak compression wake formed by the trailing edge of the strut and in the location of the velocity gradients in the cavity shear layer; possible reasons are identified and discussed for future study.
C1 [Grady, Nathan R.; Pitz, Robert W.] Vanderbilt Univ, Dept Mech Engn, Nashville, TN 37235 USA.
   [Carter, Campbell D.] USAF, Res Lab, Wright Patterson AFB, OH 45433 USA.
   [Hsu, Kuang-Yu] Innovat Sci Solut Inc, Dayton, OH 45440 USA.
   [Ghodke, Chaitanya; Menon, Suresh] Georgia Inst Technol, Sch Aerosp Engn, Atlanta, GA 30332 USA.
RP Grady, NR (reprint author), Vanderbilt Univ, Dept Mech Engn, 221 Kirkland Hall, Nashville, TN 37235 USA.
RI Pitz, Robert/H-7868-2016
OI Pitz, Robert/0000-0001-6435-5618
FU U.S. Air Force Office of Scientific Research (AFOSR), Combustion and
   Diagnostics Program; AFOSR Summer Faculty Fellowship
FX This research was supported by the U.S. Air Force Office of Scientific
   Research (AFOSR), Combustion and Diagnostics Program (Julian Tishkoff,
   Manager). R. W. Pitz was supported by an AFOSR Summer Faculty
   Fellowship. The authors would like to thank former Vanderbilt University
   undergraduate Troy Friedlander, and D. Schommer and W. Terry, of
   Innovative Scientific Solutions, Inc., for their assistance. Simulations
   were conducted at the Department of Defense High Performance Computing
   Centers at Engineering Research Development Council, Army Research
   Laboratory, and Air Force Research Laboratory.
NR 30
TC 10
Z9 12
U1 0
U2 20
PU AMER INST AERONAUTICS  ASTRONAUTICS
PI RESTON
PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091-4344 USA
SN 0748-4658
J9 J PROPUL POWER
JI J. Propul. Power
PD SEP-OCT
PY 2012
VL 28
IS 5
BP 982
EP 990
DI 10.2514/1.B34394
PG 9
WC Engineering, Aerospace
SC Engineering
GA 007NU
UT WOS:000308896200012
ER

PT J
AU Ebrahimi, HB
   Malo-Molina, FJ
   Gaitonde, DV
AF Ebrahimi, Houshang B.
   Malo-Molina, Faure J.
   Gaitonde, Datta V.
TI Numerical Simulation of Injection Strategies in a Cavity-Based
   Supersonic Combustor
SO JOURNAL OF PROPULSION AND POWER
LA English
DT Article
ID JET-INTERACTION; NAVIER-STOKES; FLOW; FREESTREAM
AB High-fidelity simulations with a validated methodology are employed to explore the physical processes associated with different injection strategies on supersonic combustion. The configurations consider a commonly employed open single-cavity flameholder. The effects of different injector locations and injection angles are examined under the constraint that the total fuel mass flow rate is the same. The numerical approach solves the full three-dimensional Navier-Stokes equations, supplemented with a two-equation k-omega turbulence closure. The specific injection locations include 10 different arrangements that examine fuel injection upstream of the cavity, on the backward step, on the cavity bottom wall, and on the downstream ramp. The angles of the fuel port injection slots include combinations of parallel and 27 and 90 deg to the airflow inside the cavity. One case with a closed cavity is also examined for comparison. The simulations are employed to characterize the performance with qualitative and quantitative mixing metrics. Detailed analysis of the results reveals both expected and unexpected findings. As anticipated, the closed cavity performs poorly relative to its open counterpart. However, an injection strategy that enhances the natural circulation pattern of the cavity is found to be superior to one that opposes it. Another counterintuitive finding is that although direct injection of the fuel upstream of the cavity into the main stream results in deeper penetration, the fuel from different injectors remains distinct, with relatively small spanwise mixing. On the other hand, injection on the floor of the cavity results in more diffused fuel distribution.
C1 [Ebrahimi, Houshang B.] Flow Modeling & Simulat Inc, Reno, NV 89501 USA.
   [Malo-Molina, Faure J.] USAF, Res Lab, Air Vehicles Directorate, Wright Patterson AFB, OH 45433 USA.
   [Gaitonde, Datta V.] Ohio State Univ, Columbus, OH 43210 USA.
RP Ebrahimi, HB (reprint author), Flow Modeling & Simulat Inc, Reno, NV 89501 USA.
EM hpe.fms@gmail.com; faure.malo-molina@wpafb.af.mil; gaitonde.3@ost.edu
NR 44
TC 4
Z9 4
U1 1
U2 10
PU AMER INST AERONAUT ASTRONAUT
PI RESTON
PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091-4344 USA
SN 0748-4658
J9 J PROPUL POWER
JI J. Propul. Power
PD SEP-OCT
PY 2012
VL 28
IS 5
BP 991
EP 999
DI 10.2514/1.B34512
PG 9
WC Engineering, Aerospace
SC Engineering
GA 007NU
UT WOS:000308896200013
ER

PT J
AU Powell, OA
   Papas, P
AF Powell, Orval A.
   Papas, Paul
TI Flame Structure Measurements of Nitric Oxide in
   Hydrocarbon-Nitrous-Oxide Flames
SO JOURNAL OF PROPULSION AND POWER
LA English
DT Article
ID LASER-INDUCED FLUORESCENCE; HIGH-PRESSURE FLAMES; SHOCK-TUBE; BURNING
   VELOCITIES; HYDROGEN; METHANE; KINETICS; LAMINAR; NO
AB Experimental NO flame profiles were measured for N-2-diluted, CH4-, C2H2-, and C3H8-N2O premixed flames stabilized on a flat flame apparatus at stoichiometric proportions. The NO measurements were obtained using laser-induced fluorescence in the saturated region and calibrated by microprobe postflame sampling using Fourier transform infrared spectroscopy. These experimental data were compared to predictions using a burner-stabilized flame model using three different published chemical mechanisms. Compared to the Fourier transform infrared results, the NO model predictions using the chemical mechanisms varied depending on the mechanism and the fuel. For example, for the CH4 flame, all three predictions fell within the Fourier transform infrared uncertainty, whereas only the Glarborg mechanism is within the Fourier transform infrared uncertainty for the C2H2 flame. The normalized, spatial NO profile predictions for all three chemical mechanisms showed reasonable agreement with the normalized experimental NO profiles in the postflame region; however, there was appreciable disparity between the experimental and model predictions of the spatial location of the peak NO mole fraction above the burner surface. Sensitivity and rate-of-production analyses showed that NHx/NO chemical interactions are important to accurately model NO profiles in hydrocarbon nitrous-oxide flames. The experimental data provided additional constraints for the rate constants of important NHx/NxHy chemical interactions, and some modifications were considered for improving comparisons between model predictions and experiments.
C1 [Powell, Orval A.] USAF Acad, Dept Engn Mech, Colorado Springs, CO 80840 USA.
   [Papas, Paul] United Technol Res Ctr, E Hartford, CT 06108 USA.
RP Powell, OA (reprint author), USAF Acad, Dept Engn Mech, 2354 Fairchild Dr, Colorado Springs, CO 80840 USA.
FU U.S. Air Force Laboratory, Propulsion Directorate's Aerospace Propulsion
   Division
FX The authors would like to acknowledge the financial support from the
   U.S. Air Force Laboratory, Propulsion Directorate's Aerospace Propulsion
   Division, the insightful comments from Anthony Dean and Christopher
   Dreyer, and the assistance from Greg Nelson for the Fourier transform
   infrared absorbance measurements. All of the NO profile experiments and
   simulations were conducted at the Colorado School of Mines as part of
   the Ph.D. dissertation research of O. Powell. The views expressed in
   this article are those of the authors and do not reflect the official
   policy or position of the U.S. Air Force, Department of Defense, or the
   U.S. Government.
NR 37
TC 0
Z9 0
U1 1
U2 10
PU AMER INST AERONAUT ASTRONAUT
PI RESTON
PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091-4344 USA
SN 0748-4658
J9 J PROPUL POWER
JI J. Propul. Power
PD SEP-OCT
PY 2012
VL 28
IS 5
BP 1052
EP 1059
DI 10.2514/1.B34366
PG 8
WC Engineering, Aerospace
SC Engineering
GA 007NU
UT WOS:000308896200018
ER

PT J
AU Lyall, ME
   King, PI
   Sondergaard, R
   Clark, JP
   McQuilling, MW
AF Lyall, M. Eric
   King, Paul I.
   Sondergaard, Rolf
   Clark, John P.
   McQuilling, Mark W.
TI An Investigation of Reynolds Lapse Rate for Highly Loaded Low Pressure
   Turbine Airfoils With Forward and Aft Loading
SO JOURNAL OF TURBOMACHINERY-TRANSACTIONS OF THE ASME
LA English
DT Article
ID PREDICTING TRANSITION; NEW-MODEL; TURBOMACHINERY; TURBULENCE; FLOWS
AB This paper presents an experimental and computational study of the midspan low Reynolds number loss behavior for two highly loaded low pressure turbine airfoils, designated L2F and L2A, which are forward and aft loaded, respectively. Both airfoils were designed with incompressible Zweifel loading coefficients of 1.59. Computational predictions are provided using two codes, FLUENT (with k-k(l)-omega model) and AFRL's Turbine Design and Analysis System (TDAAS), each with a different eddy-viscosity RANS based turbulence model with transition capability. Experiments were conducted in a low speed wind tunnel to provide transition models for computational comparisons. The Reynolds number range based on axial chord and inlet velocity was 20,000 < Re < 100,000 with an inlet turbulence intensity of 3.1%. Predictions using TDAAS agreed well with the measured Reynolds lapse rate. Computations using FLUENT however, predicted stall to occur at significantly higher Reynolds numbers as compared to experiment. Based on triple sensor hot-film measurements, FLUENT's premature stall behavior is likely the result of the eddy-viscosity hypothesis inadequately capturing anisotropic freestream turbulence effects. Furthermore, rapid distortion theory is considered as a possible analytical tool for studying freestream turbulence that influences transition near the suction surface of LPT airfoils. Comparisons with triple sensor hot-film measurements indicate that the technique is promising but more research is required to confirm its utility. [DOI: 10.1115/1.4004826]
C1 [Lyall, M. Eric; King, Paul I.] USAF, Inst Technol, Wright Patterson AFB, OH 45433 USA.
   [Sondergaard, Rolf; Clark, John P.] USAF, Prop Directorate, Res Lab, Wright Patterson AFB, OH 45433 USA.
   [McQuilling, Mark W.] St Louis Univ, St Louis, MO 63103 USA.
RP Lyall, ME (reprint author), USAF, Inst Technol, 2950 Hobson Way,Bldg 641, Wright Patterson AFB, OH 45433 USA.
EM michael.lyall@afit.edu; paul.king@afit.edu;
   rolf.sondergaard@wpafb.af.mil; john.clark3@wpafb.af.mil;
   mmcquil2@slu.edu
NR 35
TC 7
Z9 7
U1 0
U2 6
PU ASME-AMER SOC MECHANICAL ENG
PI NEW YORK
PA THREE PARK AVE, NEW YORK, NY 10016-5990 USA
SN 0889-504X
J9 J TURBOMACH
JI J. Turbomach.-Trans. ASME
PD SEP
PY 2012
VL 134
IS 5
AR 051035
DI 10.1115/1.4004826
PG 9
WC Engineering, Mechanical
SC Engineering
GA 000RE
UT WOS:000308404500035
ER

PT J
AU Nasir, S
   Bolchoz, T
   Ng, WF
   Zhang, LJ
   Moon, HK
   Anthony, RJ
AF Nasir, Shakeel
   Bolchoz, Trey
   Wing-Fai Ng
   Zhang, Luzeng J.
   Moon, Hee Koo
   Anthony, Richard J.
TI Showerhead Film Cooling Performance of a Turbine Vane at High Freestream
   Turbulence in a Transonic Cascade
SO JOURNAL OF TURBOMACHINERY-TRANSACTIONS OF THE ASME
LA English
DT Article
ID HEAT-TRANSFER COEFFICIENT; UNSTEADY WAKE; INJECTION; AIRFOIL; BLADE;
   HOLES; AIR
AB This paper experimentally investigates the effect of blowing ratio and exit Reynolds number/Mach number on the film cooling performance of a showerhead film cooled first stage turbine vane. The vane midspan was instrumented with single-sided platinum thin film gauges to experimentally characterize the Nusselt number and film cooling effectiveness distributions over the surface. The vane was arranged in a two-dimensional, linear cascade in a heated, transonic, blow-down wind tunnel. Three different exit Mach numbers of M-ex = 0.57, 0.76 and 1.0-corresponding to exit Reynolds numbers based on vane chord of 9.7 x 10(5), 1.1 x 10(6) and 1.5 x 10(6), respectively-were tested with an inlet free stream turbulence intensity (Tu) of 16% and an integral length scale normalized by vane pitch (Delta(x)/P) of 0.23. A showerhead cooling scheme with five rows of cooling holes was tested at blowing ratios of BR = 0, 1.5, 2.0, and 2.5 and a density ratio of DR = 1.3. Nusselt number and adiabatic film cooling effectiveness distributions were presented on the vane surface over a range of s/C = -0.58 on the pressure side to s/C = 0.72 on the suction side of the vane. The primary effects of coolant injection were to augment the Nusselt number and reduce the adiabatic wall temperature downstream of the injection on the vane surface as compared to no film injection case (BR = 0) at all exit Mach number conditions. In general, an increase in blowing ratio (BR = 1.5 to 2.5) showed noticeable Nusselt number augmentation on pressure surface as compared to suction surface at exit Mach 0.57 and 0.75; however, the Nusselt number augmentation for these blowing ratios was found to be negligible on the vane surface for exit Mach 1.0 case. At exit Mach 1.0, an increase in blowing ratio (BR = 1.5 to 2.5) was observed to have an adverse effect on the adiabatic effectiveness on the pressure surface but had negligible effect on suction surface. The effectiveness trend on the suction surface was also found to be influenced by a favorable pressure gradient due to Mach number and boundary layer transition in the region s/C = 0.28 to s/C = 0.45 at all blowing ratio and exit Mach number conditions. An increase in Reynolds number from exit Mach 0.76 to 1.0 increased heat transfer levels on the vane surface at all blowing ratio conditions. A large increase in Reynolds number adversely affected adiabatic effectiveness on the pressure surface at all blowing ratio conditions. On the suction surface, a large increase in Reynolds number also affected adiabatic effectiveness in the favorable pressure gradient and boundary layer transition region. [DOI: 10.1115/1.4004200]
C1 [Nasir, Shakeel; Bolchoz, Trey; Wing-Fai Ng] Virginia Polytech Inst & State Univ, Dept Mech Engn, Blacksburg, VA 24061 USA.
   [Zhang, Luzeng J.; Moon, Hee Koo] Solar Turbines Inc, Heat Transfer Dept, San Diego, CA 92186 USA.
   [Anthony, Richard J.] USAF, Res Lab, Prop Directorate, Wright Patterson AFB, OH 45433 USA.
RP Nasir, S (reprint author), Virginia Polytech Inst & State Univ, Dept Mech Engn, Blacksburg, VA 24061 USA.
EM snasir@vt.edu
RI Ng, Wing/F-2447-2014
FU Solar Turbines Inc.
FX This work was sponsored by Solar Turbines Inc. We would also like to
   express our gratitude to Dr. Marcus Polanka of the Air Force Research
   Laboratory, Wright-Patterson AFB for his help with manufacturing and
   implementation of the thin film gauges. We would also like to thank
   Ashley Guy and Bill Songer for their valuable assistance in setting up
   the experiments.
NR 35
TC 3
Z9 3
U1 0
U2 5
PU ASME-AMER SOC MECHANICAL ENG
PI NEW YORK
PA THREE PARK AVE, NEW YORK, NY 10016-5990 USA
SN 0889-504X
J9 J TURBOMACH
JI J. Turbomach.-Trans. ASME
PD SEP
PY 2012
VL 134
IS 5
AR 051021
DI 10.1115/1.4004200
PG 11
WC Engineering, Mechanical
SC Engineering
GA 000RE
UT WOS:000308404500021
ER

PT J
AU Brillson, LJ
   Dong, YF
   Tuomisto, F
   Svensson, BG
   Kuznetsov, AY
   Doutt, D
   Mosbacker, HL
   Cantwell, G
   Zhang, JZ
   Song, JJ
   Fang, ZQ
   Look, DC
AF Brillson, Leonard J.
   Dong, Yufeng
   Tuomisto, Filip
   Svensson, Bengt G.
   Kuznetsov, Andrei Yu.
   Doutt, Daniel
   Mosbacker, H. Lee
   Cantwell, Gene
   Zhang, Jizhi
   Song, Jin Joo
   Fang, Z. -Q.
   Look, David C.
TI Interplay of native point defects with ZnO Schottky barriers and doping
SO JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B
LA English
DT Review
DE annealing; cathodoluminescence; deep levels; II-VI semiconductors;
   nanostructured materials; Schottky barriers; semiconductor doping;
   semiconductor-metal boundaries; surface structure; vacancies (crystal);
   wide band gap semiconductors; zinc compounds
ID RECENT PROGRESS; N-TYPE; INTERFACES; SURFACES; REDISTRIBUTION;
   JUNCTIONS; CONTACTS; DEVICES; DIODES; STATES
AB A combination of depth-resolved electronic and structural techniques reveals that native point defects can play a major role in ZnO Schottky barrier formation and charged carrier doping. Previous work ignored these lattice defects at metal-ZnO interfaces due to relatively low point defect densities in the bulk. At higher densities, however, they may account for the wide range of Schottky barrier results in the literature. Similarly, efforts to control doping type and density usually treat native defects as passive, compensating donors or acceptors. Recent advances provide a deeper understanding of the interplay between native point defects and electronic properties at ZnO surfaces, interfaces, and epitaxial films. Key to ZnO Schottky barrier formation is a massive redistribution of native point defects near its surfaces and interfaces. It is now possible to measure the energies, densities, and in many cases the type of point defects below the semiconductor-free surface and its metal interface with nanoscale precision. Depth-resolved cathodoluminescence spectroscopy of deep level emissions calibrated with electrical techniques show that native point defects can (1) increase by orders of magnitude in densities within tens of nanometers of the semiconductor surface, (2) alter free carrier concentrations and band profiles within the surface space charge region, (3) dominate Schottky barrier formation for metal contacts to ZnO, and (4) play an active role in semiconductor doping. The authors address these issues by clearly identifying transition energies of leading native point defects and defect complexes in ZnO and the effects of different annealing methods on their spatial distributions on a nanoscale. These results reveal the interplay between ZnO electronic defects, dopants, polarity, and surface nanostructure, highlighting new ways to control ZnO Schottky barriers and doping.
C1 [Brillson, Leonard J.; Dong, Yufeng] Ohio State Univ, Dept Elect & Comp Engn, Columbus, OH 43210 USA.
   [Tuomisto, Filip] Aalto Univ, Dept Appl Phys, FI-00076 Aalto, Finland.
   [Brillson, Leonard J.; Doutt, Daniel; Mosbacker, H. Lee] Ohio State Univ, Dept Phys, Columbus, OH 43210 USA.
   [Svensson, Bengt G.; Kuznetsov, Andrei Yu.] Univ Oslo, Dept Phys, N-0316 Oslo, Norway.
   [Cantwell, Gene; Zhang, Jizhi; Song, Jin Joo] ZN Technol Inc, Brea, CA 92821 USA.
   [Fang, Z. -Q.; Look, David C.] Wright State Univ, Semicond Res Ctr, Dayton, OH 45433 USA.
   [Look, David C.] USAF, Mat & Mfg Directorate, Res Lab, Wright Patterson AFB, OH 45433 USA.
RP Brillson, LJ (reprint author), Ohio State Univ, Dept Elect & Comp Engn, Columbus, OH 43210 USA.
EM brillson.1@osu.edu
RI Tuomisto, Filip/B-8189-2008
OI Tuomisto, Filip/0000-0002-6913-5654
FU National Science Foundation [DMR-0803276]; Research Council of Norway;
   Academy of Finland; AFOSR; DOE
FX The authors gratefully acknowledge support of the National Science
   Foundation, Grant No. DMR-0803276 (Charles Ying and Verne Hess), the
   Research Council of Norway, and the Academy of Finland. DCL also
   acknowledges support from AFOSR (James Hwang) and DOE (Refik Kortan).
NR 66
TC 6
Z9 6
U1 2
U2 79
PU A V S AMER INST PHYSICS
PI MELVILLE
PA STE 1 NO 1, 2 HUNTINGTON QUADRANGLE, MELVILLE, NY 11747-4502 USA
SN 1071-1023
J9 J VAC SCI TECHNOL B
JI J. Vac. Sci. Technol. B
PD SEP
PY 2012
VL 30
IS 5
AR 050801
DI 10.1116/1.4732531
PG 11
WC Engineering, Electrical & Electronic; Nanoscience & Nanotechnology;
   Physics, Applied
SC Engineering; Science & Technology - Other Topics; Physics
GA 010DA
UT WOS:000309073500004
ER

PT J
AU Yurkiewicz, IR
   Lappan, CM
   Neely, ET
   Hesselbrock, RR
   Girard, PD
   Alphonso, AL
   Tsao, JW
AF Yurkiewicz, Ilana R.
   Lappan, Charles M.
   Neely, Edward T.
   Hesselbrock, Roger R.
   Girard, Philip D.
   Alphonso, Aimee L.
   Tsao, Jack W.
TI Outcomes from a US military neurology and traumatic brain injury
   telemedicine program
SO NEUROLOGY
LA English
DT Article
AB Objective: This study evaluated usage of the Army Knowledge Online (AKO) Telemedicine Consultation Program for neurology and traumatic brain injury (TBI) cases in remote overseas areas with limited access to subspecialists. We performed a descriptive analysis of quantity of consults, response times, sites where consults originated, military branches that benefitted, anatomic locations of problems, and diagnoses.
   Methods: This was a retrospective analysis that searched electronic databases for neurology consults from October 2006 to December 2010 and TBI consults from March 2008 to December 2010.
   Results: A total of 508 consults were received for neurology, and 131 consults involved TBI. For the most part, quantity of consults increased over the years. Meanwhile, response times decreased, with a mean response time of 8 hours, 14 minutes for neurology consults and 2 hours, 44 minutes for TBI consults. Most neurology consults originated in Iraq (67.59%) followed by Afghanistan (16.84%), whereas TBI consults mainly originated from Afghanistan (40.87%) followed by Iraq (33.91%). The most common consultant diagnoses were headaches, including migraines (52.1%), for neurology cases and mild TBI/concussion (52.3%) for TBI cases. In the majority of cases, consultants recommended in-theater management. After receipt of consultant's recommendation, 84 known neurology evacuations were facilitated, and 3 known neurology evacuations were prevented.
   Conclusions: E-mail-based neurology and TBI subspecialty teleconsultation is a viable method for overseas providers in remote locations to receive expert recommendations for a range of neurologic conditions. These recommendations can facilitate medically necessary patient evacuations or prevent evacuations for which on-site care is preferable. Neurology (R) 2012;79:1237-1243
C1 [Tsao, Jack W.] USN, Bur Med & Surg, Washington, DC USA.
   [Tsao, Jack W.] Uniformed Serv Univ Hlth Sci, Dept Neurol, Bethesda, MD 20814 USA.
   [Yurkiewicz, Ilana R.] Harvard Univ, Sch Med, Boston, MA USA.
   [Lappan, Charles M.] Telehealth, So Reg Med Command, Off Surgeon Gen Teleconsultat Programs Project Ma, Ft Sam Houston, TX USA.
   [Neely, Edward T.; Alphonso, Aimee L.] Walter Reed Natl Mil Med Ctr, Dept Neurol, Bethesda, MD USA.
   [Hesselbrock, Roger R.] USAF, Sch Aerosp Med, Aerosp Med Consultat Div, Dayton, OH USA.
   [Girard, Philip D.] Dept Vet Affairs Ctr, Gainesville, FL USA.
RP Tsao, JW (reprint author), USN, Bur Med & Surg, Washington, DC USA.
EM jack.tsao@usuhs.edu
FU US Army
FX I.R. Yurkiewicz, C. M. Lappan, E. T. Neely, R. R. Hesselbrock, P. D.
   Girard, and A. L. Alphonso reports no disclosures. J.W. Tsao has
   received funding from the US Army to develop a military neurology
   telemedicine system. Go to Neurology.org for full disclosures.
NR 6
TC 6
Z9 6
U1 1
U2 5
PU LIPPINCOTT WILLIAMS & WILKINS
PI PHILADELPHIA
PA 530 WALNUT ST, PHILADELPHIA, PA 19106-3621 USA
SN 0028-3878
J9 NEUROLOGY
JI Neurology
PD SEP
PY 2012
VL 79
IS 12
BP 1237
EP 1243
DI 10.1212/WNL.0b013e31826aac33
PG 7
WC Clinical Neurology
SC Neurosciences & Neurology
GA 009WK
UT WOS:000309055900014
PM 22955133
ER

PT J
AU Briggs, CM
AF Briggs, Chad Michael
TI Climate security, risk assessment and military planning
SO INTERNATIONAL AFFAIRS
LA English
DT Article
ID CONFLICT; ENVIRONMENT; SYSTEMS
AB Climate and environmental changes pose emerging and unique challenges to international securityas the global community experiences issues of food insecurity, severe droughts and floodsand have cascading impacts on energy supplies and infrastructure. Environmental hazards may shift abruptly, posing new risks to vulnerable systems and critical nodes in ways that diverge from historical experience. Effective risk assessments and planning will require understanding of how climate change will affect natural disasters and disaster response, and how hazards may be more extreme or unique from past experiences. This article discusses the role of climate change in affecting security planning from a military perspective, and how integration of scientific data and intelligence methods can foster assessment and effective response.
C1 [Briggs, Chad Michael] Univ Air, USAF, Washington, DC USA.
   [Briggs, Chad Michael] Inst Environm Secur, The Hague, Netherlands.
RP Briggs, CM (reprint author), Univ Air, USAF, Washington, DC USA.
NR 61
TC 7
Z9 7
U1 0
U2 22
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 0020-5850
EI 1468-2346
J9 INT AFF
JI Int. Aff.
PD SEP
PY 2012
VL 88
IS 5
BP 1049
EP +
DI 10.1111/j.1468-2346.2012.01118.x
PG 17
WC International Relations
SC International Relations
GA 007IW
UT WOS:000308883000008
ER

PT J
AU Maschmann, MR
   Dickinson, B
   Ehlert, GJ
   Baur, JW
AF Maschmann, Matthew R.
   Dickinson, Ben
   Ehlert, Gregory J.
   Baur, Jeffery W.
TI Force sensitive carbon nanotube arrays for biologically inspired airflow
   sensing
SO SMART MATERIALS AND STRUCTURES
LA English
DT Article; Proceedings Paper
CT 4th Annual Meeting of the ASME/AIAA Smart Materials, Adaptive Structures
   and Intelligent Systems (SMASIS)
CY SEP 18-21, 2011
CL Scottsdale, AZ
SP ASME, AIAA
ID LOCUST WIND RECEPTORS; ARTHROPOD FILIFORM HAIRS; SENSOR ARRAYS;
   RESISTANCE; DYNAMICS; SYSTEMS; CRICKET; FILMS
AB The compressive electromechanical response of aligned carbon nanotube (CNT) arrays is evaluated for use as an artificial hair sensor (AHS) transduction element. CNT arrays with heights of 12, 75, and 225 mu m are examined. The quasi-static and dynamic sensitivity to force, response time, and signal drift are examined within the range of applied stresses predicted by a mechanical model applicable to the conceptual CNT array-based AHS (0-1 kPa). Each array is highly sensitive to compressive loading, with a maximum observed gauge factor of 114. The arrays demonstrate a repeatable response to dynamic cycling after a break-in period of approximately 50 cycles. Utilizing a four-wire measurement electrode configuration, the change in contact resistance between the array and the electrodes is observed to dominate the electromechanical response of the arrays. The response time of the CNT arrays is of the order of 10 ms. When the arrays are subjected to constant stress, mechanical creep is observed that results in a signal drift that generally diminishes the responsiveness of the arrays, particularly at stress approaching 1 kPa. The results of this study serve as a preliminary proof of concept for utilizing CNT arrays as a transduction mechanism for a proposed artificial hair sensor. Such a low profile and light-weight flow sensor is expected to have application in a number of applications including navigation and state awareness of small air vehicles, similar in function to natural hair cell receptors utilized by insects and bats.
C1 [Maschmann, Matthew R.; Ehlert, Gregory J.; Baur, Jeffery W.] USAF, Res Lab, Mat & Mfg Directorate, AFRL RX, Wright Patterson AFB, OH 45433 USA.
   [Maschmann, Matthew R.] Universal Technol Corp, Beavercreek, OH USA.
   [Dickinson, Ben] USAF, Res Lab, Munit Directorate, AFRL RW, Eglin AFB, FL USA.
   [Ehlert, Gregory J.] Univ Florida, Dept Mech & Aerosp Engn, Gainesville, FL USA.
RP Maschmann, MR (reprint author), USAF, Res Lab, Mat & Mfg Directorate, AFRL RX, Wright Patterson AFB, OH 45433 USA.
EM Jeffery.Baur@wpafb.af.mil
OI Maschmann, Matthew/0000-0002-0740-6228
NR 42
TC 12
Z9 12
U1 0
U2 11
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0964-1726
EI 1361-665X
J9 SMART MATER STRUCT
JI Smart Mater. Struct.
PD SEP
PY 2012
VL 21
IS 9
SI SI
AR 094024
DI 10.1088/0964-1726/21/9/094024
PG 10
WC Instruments & Instrumentation; Materials Science, Multidisciplinary
SC Instruments & Instrumentation; Materials Science
GA 007DB
UT WOS:000308867900025
ER

PT J
AU Mattei, PL
   Beachkofsky, TM
   Gilson, RT
   Wisco, OJ
AF Mattei, Peter L.
   Beachkofsky, Thomas M.
   Gilson, Robert T.
   Wisco, Oliver J.
TI Syphilis: A Reemerging Infection
SO AMERICAN FAMILY PHYSICIAN
LA English
DT Article
ID HUMAN-IMMUNODEFICIENCY-VIRUS; TREPONEMA-PALLIDUM; LUMBAR PUNCTURE; LUES
   MALIGNA; HIV; MANIFESTATIONS; NEUROSYPHILIS
AB Rates of primary and secondary syphilis have increased in the past decade, warranting renewed attention to the diagnosis and treatment of this disease. Men who have sex with men are particularly affected; however, increases in infection rates have also been noted in women, as well as in all age groups and ethnicities. Physicians need to vigilantly screen high-risk patients. The concurrent rise in congenital syphilis also requires special attention and reemphasizes the need for continued early prenatal care and syphilis screening for all pregnant women. Syphilis infection in patients coinfected with human immunodeficiency virus has also become more common. New experimental diagnostic approaches, including using the B cell chemoattractant chemokine (CXC motif) ligand 13 as a cerebrospinal fluid marker, may help identify suspected neurosyphilis cases. Additionally, point-of-care immunochromatographic strip testing has been suggested for screening high-risk populations in developing countries. Nontreponemal screening tests followed by treponemal confirmatory tests continue to be standard diagnostics; however, interpreting false-negative and false-positive test results, and identifying serofast reactions, can be challenging. Although doxycycline, tetracycline, ceftriaxone, and azithromycin have been used to successfully treat syphilis, penicillin remains the drug of choice in all stages of infection and is the therapy recommended by the Centers for Disease Control and Prevention. Close follow-up is necessary to ensure treatment success. (Am Fam Physician. 2012;86(5):433-440. Copyright (C) 2012 American Academy of Family Physicians.)
C1 [Mattei, Peter L.] Joint Base McGuire Dix Lakehurst, Med Grp 87, Trenton, NJ USA.
   [Beachkofsky, Thomas M.] Kunsan Air Base, Med Grp 8, Kunsan, South Korea.
   [Gilson, Robert T.] Univ Texas Hlth Sci Ctr San Antonio, San Antonio, TX 78229 USA.
   [Wisco, Oliver J.] Harvard Univ, Sch Med, Boston, MA USA.
RP Mattei, PL (reprint author), USAF, 641 Bainbridge Dr, Mullica Hill, NJ 08062 USA.
EM peterlmattei@gmail.com
NR 32
TC 25
Z9 31
U1 2
U2 20
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 SEP 1
PY 2012
VL 86
IS 5
BP 433
EP 440
PG 8
WC Primary Health Care; Medicine, General & Internal
SC General & Internal Medicine
GA 001HY
UT WOS:000308452400009
PM 22963062
ER

PT J
AU Burge, SD
   Bunegin, L
   Weitzel, EK
   McMains, KC
AF Burge, Scott D.
   Bunegin, Leon
   Weitzel, Erik K.
   McMains, K. Christopher
TI The validation of an endoscopic sinus surgery skills training model: A
   pilot study
SO AMERICAN JOURNAL OF RHINOLOGY & ALLERGY
LA English
DT Article; Proceedings Paper
CT 56th Annual Meeting of the American-Rhinologic-Society (ARS)
CY SEP 25, 2010
CL Boston, MA
SP Amer Rhinol Soc (ARS)
ID SIMULATOR; EDUCATION; COMPLICATIONS; COMPLEX
AB Background: Performing functional endoscopic sinus surgery (FESS) requires a trainee surgeon to develop both thorough anatomic understanding and new manual dexterity skills. Traditionally, these skills were learned in the operating room setting. In an era of available surgical simulation, this practice introduces ethical concerns about exposing patients to unnecessary risks during surgical skills development. Additionally, cost- effective rhinologic training has become increasingly important. To address these problems, a low-cost, intermediate-fidelity FESS training model was developed, and both speed and accuracy of task completion were measured to assess both immediate and intermediate-term skills retention.
   Methods: Preliminary data were collected on 12 medical students and 10 resident-level (PGY1, -2, and -3) learners. Distinct tasks were performed five times on the initial day of testing and repeated after 2 weeks.
   Results: Both groups attained statistically significant improvement in time to complete both tasks by the second iteration of each task and retained this effect after 2 weeks. Similarly, statistically significant improvement was seen for accuracy relative to the initial attempt by the fifth iteration for residents. This effect was also seen by the third through fifth iterations and after 2 weeks for students. Additionally, when the 2-week follow-up testing was compared with the fifth attempt, the only skills that deteriorated significantly were the resident group with the complex task times and the students with measures of accuracy. However, in both cases a highly significant improvement from initial attempts was maintained (p = 0.02 and p = 0.005, respectively). Residents were significantly faster than medical students at both simple and complex tasks for attempts 1 through 4, but this difference was not significant for attempt 5 and after 2 weeks. Residents had significantly fewer errors for all but the 2-week data point.
   Conclusion: The data from this pilot study support improved FESS skills for both medical students and residents using this low-cost, intermediate-fidelity model. (Am J Rhinol Allergy 26, 409-413, 2012; doi: 10.2500/ajra.2012.26.3798)
C1 [Burge, Scott D.] Univ Oklahoma, Coll Med, Dept Otorhinolaryngol, Oklahoma City, OK 73104 USA.
   [Bunegin, Leon] Univ Texas Hlth Sci Ctr San Antonio, Dept Anesthesiol, San Antonio, TX 78229 USA.
   [Weitzel, Erik K.] Wilford Hall USAF Med Ctr, Dept Otorhinolaryngol Head & Neck Surg, Lackland AFB, TX 78236 USA.
   [McMains, K. Christopher] Audie Murphy VA Med Ctr, San Antonio, TX USA.
RP Burge, SD (reprint author), Univ Oklahoma, Coll Med, Dept Otorhinolaryngol, 920 Stanton L Young Blvd,WP 1290, Oklahoma City, OK 73104 USA.
OI Weitzel, Erik/0000-0001-9155-3556
NR 20
TC 6
Z9 6
U1 0
U2 4
PU OCEAN SIDE PUBLICATIONS INC
PI PROVIDENCE
PA 95 PITMAN ST, PROVIDENCE, RI 02906 USA
SN 1945-8924
J9 AM J RHINOL ALLERGY
JI Am. J. Rhinol. Allergy
PD SEP-OCT
PY 2012
VL 26
IS 5
BP 409
EP 413
DI 10.2500/ajra.2012.26.3798
PG 5
WC Otorhinolaryngology
SC Otorhinolaryngology
GA 007BA
UT WOS:000308862600019
PM 23168158
ER

PT J
AU Tovar-Murray, D
   Jenifer, ES
   Andrusyk, J
   D'Angelo, R
   King, T
AF Tovar-Murray, Darrick
   Jenifer, Ericka S.
   Andrusyk, Jara
   D'Angelo, Ryan
   King, Tia
TI Racism-Related Stress and Ethnic Identity as Determinants of African
   American College Students' Career Aspirations
SO CAREER DEVELOPMENT QUARTERLY
LA English
DT Article
DE African American; career aspirations; ethnic identity; racism-related
   stress
ID CONCEPTUALIZATION; PSYCHOLOGY
AB Drawing primarily on the construct of psychological buffer, the purpose of this study was to explore the extent to which racism-related stress and ethnic identity are determinants of career aspirations. A total of 163 African American college students from a predominately White Midwestern university participated in the study. A moderation regression analysis was conducted. Results indicate that ethnic identity interacted with racism-related stress (p= .04) to predict career aspirations. In other words, as racism-related stress increases in the context of low identity development, career aspirations decrease. Conversely, as perceived racism increases in the context of high identity development, career aspirations increase. Implications for professionals and future research in the field of career counseling are discussed.
C1 [Tovar-Murray, Darrick; Andrusyk, Jara; D'Angelo, Ryan; King, Tia] De Paul Univ, Coll Educ, Chicago, IL 60614 USA.
   [Jenifer, Ericka S.] USAF, Mental Hlth Clin, Goodfellow AFB, San Angelo, TX USA.
RP Tovar-Murray, D (reprint author), De Paul Univ, Coll Educ, 2320 N Kenmore Ave, Chicago, IL 60614 USA.
EM dtovarmu@depaul.edu
NR 22
TC 5
Z9 5
U1 2
U2 7
PU WILEY PERIODICALS, INC
PI SAN FRANCISCO
PA ONE MONTGOMERY ST, SUITE 1200, SAN FRANCISCO, CA 94104 USA
SN 0889-4019
J9 CAREER DEV Q
JI Career Dev. Q.
PD SEP
PY 2012
VL 60
IS 3
BP 254
EP 262
DI 10.1002/j.2161-0045.2012.00021.x
PG 9
WC Psychology, Applied
SC Psychology
GA 001ST
UT WOS:000308481100006
ER

PT J
AU Lambert, LS
   Tepper, BJ
   Carr, JC
   Holt, DT
   Barelka, AJ
AF Lambert, Lisa Schurer
   Tepper, Bennett J.
   Carr, Jon C.
   Holt, Daniel T.
   Barelka, Alex J.
TI Forgotten but Not Gone: An Examination of Fit Between Leader
   Consideration and Initiating Structure Needed and Received
SO JOURNAL OF APPLIED PSYCHOLOGY
LA English
DT Article
DE leadership; person-environment fit; job attitudes; trust
ID PERSON-ENVIRONMENT FIT; PATH-GOAL THEORY; SOCIAL-EXCHANGE;
   ORGANIZATIONAL CRITERIA; CITIZENSHIP BEHAVIORS; METAANALYTIC TEST;
   JOB-PERFORMANCE; TRUST; MODEL; WORK
AB We examined the effects of fit between leader consideration and initiating structure needed and received on employees' work-related attitudes (i.e., trust in the supervisor, job satisfaction, and affective commitment to the organization). Consistent with predictions that derive from the person environment fit research tradition, results from Study 1 suggested that deficient amounts of both leadership behaviors were associated with unfavorable attitudinal outcomes. However, while excess levels of consideration were associated with favorable attitudinal outcomes, excess levels of initiating structure were associated with unfavorable attitudes, and for both forms of leadership, higher levels of absolute fit were associated with more favorable outcomes. Results from Study 2 suggested that attitudes generated by the fit between leadership needed and received influence employees' organizational citizenship behavior as reported by their supervisors. The relationship between consideration needed and received and subordinates' organizational citizenship behavior relating to individuals (OCBI) and organizational citizenship behavior relating to the organization itself (OCBO) was partially mediated by employees' trust in the supervisor, while the relationship between initiating structure needed and received and OCBI was fully mediated by trust in the supervisor, and for OCBO was partially mediated.
C1 [Lambert, Lisa Schurer; Tepper, Bennett J.] Georgia State Univ, J Mack Robinson Coll Business, Atlanta, GA 30302 USA.
   [Carr, Jon C.] Texas Christian Univ, MJ Neeley Sch Management, Ft Worth, TX 76129 USA.
   [Holt, Daniel T.] Mississippi State Univ, Coll Business & Ind, Dept Management & Informat Syst, Mississippi State, MS USA.
   [Barelka, Alex J.] USAF, Dept Behav Sci, Wright Patterson AFB, OH 45433 USA.
RP Lambert, LS (reprint author), Georgia State Univ, J Mack Robinson Coll Business, Atlanta, GA 30302 USA.
EM lisalambert@gsu.edu
OI Tepper, Ben/0000-0003-0612-9078
NR 94
TC 15
Z9 16
U1 15
U2 76
PU AMER PSYCHOLOGICAL ASSOC
PI WASHINGTON
PA 750 FIRST ST NE, WASHINGTON, DC 20002-4242 USA
SN 0021-9010
J9 J APPL PSYCHOL
JI J. Appl. Psychol.
PD SEP
PY 2012
VL 97
IS 5
BP 913
EP 930
DI 10.1037/a0028970
PG 18
WC Psychology, Applied; Management
SC Psychology; Business & Economics
GA 005UG
UT WOS:000308775000001
PM 22708919
ER

PT J
AU Rao, SI
   Uchic, MD
   Shade, PA
   Woodward, C
   Parthasarathy, TA
   Dimiduk, DM
AF Rao, S. I.
   Uchic, M. D.
   Shade, P. A.
   Woodward, C.
   Parthasarathy, T. A.
   Dimiduk, D. M.
TI Critical percolation stresses of random Frank-Read sources in
   micrometer-sized crystals of superalloys
SO MODELLING AND SIMULATION IN MATERIALS SCIENCE AND ENGINEERING
LA English
DT Article
ID DISCRETE DISLOCATION SIMULATIONS; NICKEL MICROCRYSTALS; SINGLE-CRYSTALS;
   MICRON-SCALE; STRENGTH; PLASTICITY; DEFORMATION; DEPENDENCE
AB 2D dislocation dynamics simulations were used to investigate the size effect observed experimentally in the yield behavior of micrometer-sized crystals of gamma-gamma' superalloys. Random Frank-Read sources were introduced on a (1 1 1) glide plane for three simulation cell sizes. Critical stresses were determined for the percolation of dislocations evolving from the Frank-Read sources in such cells populated with a distribution of gamma' precipitates at similar to 73.5% by volume, consistent with the experiment. An APB energy of 250 mJ m(-2) was used in the simulations. The study found that the simulation results of percolation stresses were consistent with experimental 0.2% yield stress values with respect to both the scatter at each sample size, as well as the weak variation in critical stress with size. The weak size effect and the large scatter were found to be related to two factors: (1) strength of single-arm sources, as well as (2) the variation in precipitate structure at the single-arm source positions.
C1 [Rao, S. I.; Parthasarathy, T. A.] Universal Energy Syst Inc, Dayton, OH 45432 USA.
   [Uchic, M. D.; Shade, P. A.; Woodward, C.; Dimiduk, D. M.] USAF, Res Lab, Mat & Mfg Directorate, AFRL MLLM, Wright Patterson AFB, OH 45433 USA.
RP Rao, SI (reprint author), Universal Energy Syst Inc, 4401 Dayton Xenia Rd, Dayton, OH 45432 USA.
RI Shade, Paul/H-6459-2011
FU AFOSR
FX The authors acknowledge the use of the 3D dislocation dynamics code,
   ParaDiS, which was developed at the Lawrence Livermore National
   Laboratory by Dr Vasily Bulatov and co-workers. This work was supported
   by AFOSR, and by a grant of computer time from the DOD High Performance
   Computing Modernization Program, at the Aeronautical Systems
   Center/Major Shared Resource Center.
NR 20
TC 6
Z9 6
U1 1
U2 11
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0965-0393
J9 MODEL SIMUL MATER SC
JI Model. Simul. Mater. Sci. Eng.
PD SEP
PY 2012
VL 20
IS 6
AR 065001
DI 10.1088/0965-0393/20/6/065001
PG 7
WC Materials Science, Multidisciplinary; Physics, Applied
SC Materials Science; Physics
GA 998PB
UT WOS:000308251800001
ER

PT J
AU Varney, SM
   Bebarta, VS
   Pitotti, RL
   Vargas, TE
AF Varney, Shawn M.
   Bebarta, Vikhyat S.
   Pitotti, Rebecca L.
   Vargas, Toni E.
TI Survey in the Emergency Department of Parents' Understanding of Cough
   and Cold Medication Use in Children Younger Than 2 Years
SO PEDIATRIC EMERGENCY CARE
LA English
DT Article
DE cough and cold medications; Food and Drug Administration guidelines;
   Public Health Advisory; infants; over-the-counter
ID OVER-THE-COUNTER; PEDIATRIC COUGH
AB Objectives: In August 2007, the Food and Drug Administration (FDA) released a public health advisory recommending that over-the-counter cough and cold medications (CCMs) not be used in children younger than 2 years. Our objective was to assess parents' awareness and understanding of the guidelines.
   Methods: We surveyed caregivers of children younger than 2 years in the emergency department of an urban tertiary care military hospital where civilian patients are also treated. After completing the survey, caregivers received a handout explaining the FDA's recommendations.
   Results: Our response rate was 99% (264/265). First-time parents constituted 45% (114/251) of responders. Education level was high school, 21%; some college, 36%; and college graduate, 40%. Thirty-one percent (77/247) were aware of the FDA guidelines. Of these 77, 44 (57%) reported the guidelines indicated CCMs were not safe in children younger than 2 years, and 18 (23%) said CCMs have caused death. Twenty-six percent (68/264) did not give CCMs to their children younger than 2 years, and 40% of these reported it was because of learning about the guidelines; 63% (165/264) reported CCMs were effective, 11% ineffective, and 27% did not know. Fifty-seven percent (151/263) reported CCMs were safe, 12% unsafe, and 31% unsure. Twenty-two percent (31/143) planned to use or continue to use CCMs in their children, 34% did not, 23% not sure, and 21% only if their doctor advised it.
   Conclusions: The majority of caregivers were not aware of the FDA guidelines on CCM use in children younger than 2 years. Most thought CCMs were safe and effective.
C1 [Varney, Shawn M.; Bebarta, Vikhyat S.] Brooke Army Med Ctr, Wilford Hall Med Ctr, San Antonio, TX USA.
   [Varney, Shawn M.] Uniformed Serv Univ Hlth Sci, Bethesda, MD 20814 USA.
   [Bebarta, Vikhyat S.] Univ Texas Hlth Sci Ctr San Antonio, San Antonio, TX 78229 USA.
   [Pitotti, Rebecca L.; Vargas, Toni E.] Wilford Hall USAF Med Ctr, Dept Emergency Med, San Antonio, TX 78236 USA.
RP Varney, SM (reprint author), 515 Ruidosa Downs, Helotes, TX 78023 USA.
EM smvarney@gmail.com
RI bebarta, vikhyat/K-3476-2015
NR 10
TC 4
Z9 4
U1 0
U2 3
PU LIPPINCOTT WILLIAMS & WILKINS
PI PHILADELPHIA
PA 530 WALNUT ST, PHILADELPHIA, PA 19106-3621 USA
SN 0749-5161
J9 PEDIATR EMERG CARE
JI Pediatr. Emerg. Care
PD SEP
PY 2012
VL 28
IS 9
BP 883
EP 885
DI 10.1097/PEC.0b013e3182676518
PG 3
WC Emergency Medicine; Pediatrics
SC Emergency Medicine; Pediatrics
GA 004HZ
UT WOS:000308673600011
PM 22929136
ER

PT J
AU Fawcett, SE
   Waller, MA
AF Fawcett, Stanley E.
   Waller, Matthew A.
TI Mitigating the Myopia of Dominant Logics: On Differential Performance
   and Strategic Supply Chain Research
SO JOURNAL OF BUSINESS LOGISTICS
LA English
DT Editorial Material
DE dominant logic; differential firm performance; value co-creation
ID COMPLEXITY; DISRUPTIONS; MANAGEMENT; CUSTOMER; DELIGHT
AB The primary question of management scholarship is, What leads some firms to be successful even as others fail? Over the years, a variety of dominant logics have emerged to inform this question. Synthesized, these logics make it clear that companies win when they create customer value better than the competition and efficiently enough to be profitable. That is, firms that design distinctive and dynamic value-added systems win competitive battles. This observation is salient to the Journal of Business Logistics community as systems design and value creation are focal decision areas of supply chain management. With this in mind, we briefly discuss two of many areas for which strategic supply chain research can inform differential performance.
C1 [Fawcett, Stanley E.] USAF, Inst Technol, Wright Patterson AFB, OH 45433 USA.
   [Waller, Matthew A.] Univ Arkansas, Fayetteville, AR 72701 USA.
RP Fawcett, SE (reprint author), USAF, Inst Technol, Wright Patterson AFB, OH 45433 USA.
NR 44
TC 7
Z9 7
U1 4
U2 13
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 0735-3766
J9 J BUS LOGIST
JI J. Bus. Logist.
PD SEP
PY 2012
VL 33
IS 3
BP 173
EP 180
DI 10.1111/j.2158-1592.2012.01050.x
PG 8
WC Management
SC Business & Economics
GA 002AU
UT WOS:000308503100001
ER

PT J
AU Salyer, J
   Schubert, CM
   Chiaranai, C
AF Salyer, Jeanne
   Schubert, Christine M.
   Chiaranai, Chantira
TI Supportive Relationships, Self-care Confidence, and Heart Failure
   Self-care
SO JOURNAL OF CARDIOVASCULAR NURSING
LA English
DT Article
DE heart failure; self-care; structural equation model; supportive
   relationships
ID HOSPITAL READMISSION; SOCIAL SUPPORT; PROGNOSTIC IMPORTANCE; MARITAL
   QUALITY; PREDICTORS; SURVIVAL; HEALTH; POPULATION
AB Background: The theory of heart failure (HF) self-care proposes that confidence mediates relationships between social support and self-care behaviors. Objective: This study aimed to examine the effects of supportive relationships on self-care behaviors and the mediating effects of self-care confidence in HF outpatients. Methods: Structural equation modeling (SAS version 9.1, SAS Institute Inc, Cary, North Carolina) was used to examine the influence of supportive relationships and self-care confidence on self- care management and maintenance in a cross-section of patients with HF (n = 97; age = 56 years; 57% men; 45% African American; 55% married). Models included 3 variables characterizing supportive relationships: marital status (1 = currently married, 0 = not currently married), social network size (number of persons available to provide support), and perceived social support (Medical Outcomes Study Social Support Scale). To account for the effects of severity of illness, 2 measures characterizing severity of HF were included: left ventricular ejection fraction and New York Heart Association functional classification of HF. The Self-Care of Heart Failure Index (version 4) was used to measure self- care confidence, management, and maintenance. A consensus of fit indices estimated overall model fit. Results: Initial models fit the data; however, to improve fit and identify the most parsimonious models, 3 nonsignificant paths were removed, and modified models, including only social support and social network size, were proposed and tested. Modified models fit the data well and accounted for 15% in the variance in self- care maintenance (chi(2) P = .29) and 18% of the variance in self- care management(chi(2) P =. 631). The indirect effect of social support (beta = 0.37; P = .0004) through self-care confidence (beta = 0.35; P = .0002) on self-care management, in the absence of a significant direct effect, supports the hypothesis that self-care confidence mediates the relationship between social support and self-care management. Social network size had a negative effect on self-care confidence (beta = -0.22; P = .029), but this effect was mediated by self- care confidence (beta = 0.33; P = .0002), which reduced the total negative effects. Self-care confidence was the best predictor of self- care management. In the self-care maintenance model, direct (beta = 0.27; P = .003) and indirect effects of social support (beta = 0.37; P = .0002) on self-care maintenance through self-care confidence (beta = 0.22; P = .001) attenuated negative effects of social network size (beta = -0.22; P = .0145). Social support was the best predictor of self-care maintenance. Conclusions: Findings support the positive influence of social support on self-care behaviors. Self-care confidence mediated the relationship between social support and self-care behaviors and had direct influence on these behaviors as well. This suggests that self-care confidence and self-care behaviors can be enhanced by improving the quality of social support.
C1 [Salyer, Jeanne] Virginia Commonwealth Univ, Sch Nursing, Dept Adult Hlth & Nursing Syst, Richmond, VA 23298 USA.
   [Schubert, Christine M.] USAF, Dept Math & Stat, Inst Technol, Wright Patterson AFB, OH 45433 USA.
   [Chiaranai, Chantira] Suranaree Univ Technol, Inst Nursing, Nakhon Ratchasima, Thailand.
RP Salyer, J (reprint author), Virginia Commonwealth Univ, Sch Nursing, Dept Adult Hlth & Nursing Syst, 1100 E Leigh St, Richmond, VA 23298 USA.
EM jsalyer@vcu.edu
NR 45
TC 16
Z9 16
U1 2
U2 21
PU LIPPINCOTT WILLIAMS & WILKINS
PI PHILADELPHIA
PA 530 WALNUT ST, PHILADELPHIA, PA 19106-3621 USA
SN 0889-4655
J9 J CARDIOVASC NURS
JI J. Cardiovasc. Nurs.
PD SEP-OCT
PY 2012
VL 27
IS 5
BP 384
EP 393
DI 10.1097/JCN.0b013e31823228cd
PG 10
WC Cardiac & Cardiovascular Systems; Nursing
SC Cardiovascular System & Cardiology; Nursing
GA 997TR
UT WOS:000308189800034
PM 22048619
ER

PT J
AU Ruggles-Wrenn, MB
   Jones, TP
AF Ruggles-Wrenn, M. B.
   Jones, T. P.
TI Tension-Compression Fatigue of a SiC/SiC Ceramic Matrix Composite at
   Elevated Temperature
SO JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER-TRANSACTIONS OF THE
   ASME
LA English
DT Article
ID CREEP-BEHAVIOR; OXIDATION; MECHANISMS; STABILITY; STEAM; CMCS; SIBC; AIR
AB Tension-compression fatigue behavior of a nonoxide ceramic composite with a multilayered matrix was investigated at 1200 degrees C in laboratory air. The composite was produced via chemical vapor infiltration (CVI). The composite had an oxidation inhibited matrix, which consisted of alternating layers of silicon carbide and boron carbide and was reinforced with laminated Hi-Nicalon (TM) fibers woven in an eight-harness-satin weave (8HSW). Fiber preforms had pyrolytic carbon fiber coating with boron carbon overlay applied. Tension-compression fatigue behavior was studied for fatigue stresses ranging from 80 to 200 MPa at a frequency of 1.0 Hz. The R ratio (minimum stress to maximum stress) was -1.0. Fatigue run-out was defined as 2 x 10(5) cycles. Fatigue limit was 80 MPa. Specimens that achieved fatigue run-out were subjected to tensile tests to failure to characterize the retained tensile properties. The material retained 100% of its tensile strength. Reductions in tensile modulus and in compressive modulus were negligible. Composite microstructure, as well as damage and failure mechanisms were investigated. [DOI:10.1115/1.4006989]
C1 [Ruggles-Wrenn, M. B.; Jones, T. P.] USAF, Dept Aeronaut & Astronaut, Inst Technol, Wright Patterson AFB, OH 45433 USA.
RP Ruggles-Wrenn, MB (reprint author), USAF, Dept Aeronaut & Astronaut, Inst Technol, Wright Patterson AFB, OH 45433 USA.
RI Ruggles-Wrenn, Marina/J-6103-2014
NR 25
TC 0
Z9 0
U1 4
U2 28
PU ASME-AMER SOC MECHANICAL ENG
PI NEW YORK
PA THREE PARK AVE, NEW YORK, NY 10016-5990 USA
SN 0742-4795
J9 J ENG GAS TURB POWER
JI J. Eng. Gas. Turbines Power-Trans. ASME
PD SEP
PY 2012
VL 134
IS 9
AR 091301
DI 10.1115/1.4006989
PG 6
WC Engineering, Mechanical
SC Engineering
GA 000WM
UT WOS:000308421100001
ER

PT J
AU Park, B
   Sohn, H
   Olson, SE
   DeSimio, MP
   Brown, KS
   Derriso, MM
AF Park, Byeongjin
   Sohn, Hoon
   Olson, Steven E.
   DeSimio, Martin P.
   Brown, Kevin S.
   Derriso, Mark M.
TI Impact localization in complex structures using laser-based time
   reversal
SO STRUCTURAL HEALTH MONITORING-AN INTERNATIONAL JOURNAL
LA English
DT Article
DE impact localization; times reversal; laser Doppler vibrometer; laser
   ultrasonics; complex structures
ID COMPOSITE PIEZOELECTRIC ROSETTES; SOURCE LOCATION; ACOUSTIC-EMISSION;
   PANELS
AB This study presents a new impact localization technique that can pinpoint the location of an impact event within a complex structure using a time-reversal concept, surface-mounted piezoelectric transducers, and a scanning laser Doppler vibrometer. First, an impulse response function between an impact location and a piezoelectric transducer is approximated by exciting the piezoelectric transducer instead and measuring the response at the impact location using scanning laser Doppler vibrometer. Then, training impulse response functions are assembled by repeating this process for various potential impact locations and piezoelectric transducers. Once an actual impact event occurs, the impact response is recorded by the piezoelectric transducers and compared with the training impulse response functions. The correlations between the impact response and the impulse response functions in the training data are computed using a unique concept of time reversal. Finally, the training impulse response function, which gives the maximum correlation, is chosen from the training data set and the impact location is identified. The proposed impact localization technique has the following advantages over the existing techniques: (a) it can be applied to isotropic/anisotropic plate structures with additional complex features such as stringers, stiffeners, spars, and rivet connections; (b) only simple correlation calculation based on time reversal is required, making it attractive for real-time automated monitoring; and (c) training is conducted using noncontact scanning laser Doppler vibrometer and the existing piezoelectric transducers that may already be installed for other structural health-monitoring applications. Impact events on an actual composite aircraft wing and an actual aluminum fuselage are successfully identified using the proposed technique.
C1 [Park, Byeongjin; Sohn, Hoon] Korea Adv Inst Sci & Technol, Dept Civil & Environm Engn, Taejon 305701, South Korea.
   [Olson, Steven E.; DeSimio, Martin P.] Univ Dayton, Res Inst, Dayton, OH 45469 USA.
   [Brown, Kevin S.; Derriso, Mark M.] USAF, Res Lab, Dayton, OH USA.
RP Sohn, H (reprint author), Korea Adv Inst Sci & Technol, Dept Civil & Environm Engn, Taejon 305701, South Korea.
EM hoonsohn@kaist.ac.kr
RI Sohn, Hoon/A-9406-2008
FU Nuclear Research & Development Program [2011-0018430]; Leap Research
   Program of National Research Foundation (NRF) of Korea [2011-0016470];
   Ministry of Education, Science & Technology (MEST)
FX This study was supported by the Nuclear Research & Development Program
   (grant number 2011-0018430) and the Leap Research Program (grant number
   2011-0016470) of National Research Foundation (NRF) of Korea funded by
   the Ministry of Education, Science & Technology (MEST).
NR 18
TC 20
Z9 21
U1 1
U2 17
PU SAGE PUBLICATIONS LTD
PI LONDON
PA 1 OLIVERS YARD, 55 CITY ROAD, LONDON EC1Y 1SP, ENGLAND
SN 1475-9217
EI 1741-3168
J9 STRUCT HEALTH MONIT
JI Struct. Health Monit.
PD SEP
PY 2012
VL 11
IS 5
BP 577
EP 588
DI 10.1177/1475921712449508
PG 12
WC Engineering, Multidisciplinary; Instruments & Instrumentation
SC Engineering; Instruments & Instrumentation
GA 997BQ
UT WOS:000308139600006
ER

PT J
AU Bright, TJ
   Watjen, JI
   Zhang, ZM
   Muratore, C
   Voevodin, AA
AF Bright, T. J.
   Watjen, J. I.
   Zhang, Z. M.
   Muratore, C.
   Voevodin, A. A.
TI Optical properties of HfO2 thin films deposited by magnetron sputtering:
   From the visible to the far-infrared
SO THIN SOLID FILMS
LA English
DT Article
DE Hafnium oxide; Infrared; Magnetron sputtering; Optical constants; Thin
   films; X-ray diffraction; Fourier transform infrared spectroscopy;
   Ellipsometry
ID SPECTROSCOPIC ELLIPSOMETRY; OXIDE; COATINGS; REFLECTANCE; CONSTANTS;
   SILICON; GROWTH; WATER
AB Hafnium oxide (HfO2 or hafnia) holds promise as a high-index dielectric in optical devices and thermal barrier coatings, because of its transparency over a broad spectrum (from the ultraviolet to the mid-infrared) and chemical and thermal stability at high temperatures. In the present work, thin hafnia films of thicknesses from about 180 to 500 nm are deposited on Si substrates using reactive magnetron sputtering. The crystalline structure and surface topography are characterized by X-ray diffraction and atomic force microscopy, respectively. The optical and radiative properties of the film-substrate composites are measured at room temperature using spectroellipsometry and Fourier-transform infrared spectrometry. The optical constants are obtained from about 0.37 to 500 mu m by fitting suitable models to the experimental results. Optical properties and dielectric function modeling are discussed with correlation to both film thickness and surface roughness. It is found that a single-oscillator dielectric-function model can describe radiative properties from about 1 to 20 mu m. By combining Cauchy's formula (for the visible and near-infrared regions) with a multiple-oscillator Lorentz model (for the far-infrared region), a dielectric function is obtained for the HfO2 films that is applicable from the visible to the far-infrared. (C) 2012 Elsevier B.V. All rights reserved.
C1 [Bright, T. J.; Watjen, J. I.; Zhang, Z. M.] Georgia Inst Technol, George W Woodruff Sch Mech Engn, Atlanta, GA 30332 USA.
   [Muratore, C.; Voevodin, A. A.] USAF, Res Lab, Mat & Mfg Directorate, Thermal Sci & Mat Branch, Wright Patterson AFB, OH 45433 USA.
RP Zhang, ZM (reprint author), Georgia Inst Technol, George W Woodruff Sch Mech Engn, Atlanta, GA 30332 USA.
EM zhuomin.zhang@me.gatech.edu
RI Voevodin, Andrey/I-6684-2013
FU Air Force Research Laboratory Thermal Metamaterials Program
FX This work was sponsored by the Air Force Research Laboratory Thermal
   Metamaterials Program. The authors would like to thank Dr. Daniel
   Arenas, Dr. Dimitrios Koukis, and Professor David Tanner for the help
   with the far-infrared FTIR measurements. The Nanotechnology Research
   Center and Center for Nanostructure Characterization at Georgia Tech
   were used for the characterization of the materials.
NR 48
TC 28
Z9 30
U1 3
U2 63
PU ELSEVIER SCIENCE SA
PI LAUSANNE
PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND
SN 0040-6090
J9 THIN SOLID FILMS
JI Thin Solid Films
PD SEP 1
PY 2012
VL 520
IS 22
BP 6793
EP 6802
DI 10.1016/j.tsf.2012.07.037
PG 10
WC Materials Science, Multidisciplinary; Materials Science, Coatings &
   Films; Physics, Applied; Physics, Condensed Matter
SC Materials Science; Physics
GA 997YW
UT WOS:000308205400013
ER

PT J
AU Barbier, G
   Zafarani, R
   Gao, HJ
   Fung, G
   Liu, H
AF Barbier, Geoffrey
   Zafarani, Reza
   Gao, Huiji
   Fung, Gabriel
   Liu, Huan
TI Maximizing benefits from crowdsourced data
SO COMPUTATIONAL AND MATHEMATICAL ORGANIZATION THEORY
LA English
DT Article
DE Crowdsourcing; Event maps; Community maps; Crisis maps; Social media;
   Data mining; Machine learning; Humanitarian Aid and Disaster Relief
   (HADR)
ID POWER
AB Crowds of people can solve some problems faster than individuals or small groups. A crowd can also rapidly generate data about circumstances affecting the crowd itself. This crowdsourced data can be leveraged to benefit the crowd by providing information or solutions faster than traditional means. However, the crowdsourced data can hardly be used directly to yield usable information. Intelligently analyzing and processing crowdsourced information can help prepare data to maximize the usable information, thus returning the benefit to the crowd. This article highlights challenges and investigates opportunities associated with mining crowdsourced data to yield useful information, as well as details how crowdsource information and technologies can be used for response-coordination when needed, and finally suggests related areas for future research.
C1 [Barbier, Geoffrey] USAF, Res Lab, Dayton, OH USA.
   [Zafarani, Reza; Gao, Huiji] Arizona State Univ, Data Min & Machine Learning DMML Lab, Tempe, AZ USA.
   [Fung, Gabriel] IGNGAB Lab, Hong Kong, Hong Kong, Peoples R China.
RP Barbier, G (reprint author), USAF, Res Lab, Dayton, OH USA.
EM geoffrey.barbier@wpafb.af.mil; reza@asu.edu; huiji.gao@asu.edu;
   gabriel@igngab.com; huanliu@asu.edu
FU Office of Naval Research (ONR); Air Force Office of Scientific Research
   (AFOSR); OSD-T&E (Office of Secretary Defense-Test and Evaluation)
   [Defense-Wide/PE0601120D8Z]; National Defense Education Program
   (NDEP)/BA-1, Basic Research; SMART Program Office [N00244-09-1-0081]
FX The authors wish to acknowledge the members of the Arizona State
   University, Data Mining and Machine Learning laboratory for their
   motivating influence and thought-inspiring comments and questions with
   reference to this topic. This work, in particular, the content of Sect.
   5, was inspired by and based on an ongoing project "ASU Coordination
   Tracker (ACT) for Disaster Relief". This work was funded, in part, by
   the Office of Naval Research (ONR), the Air Force Office of Scientific
   Research (AFOSR), and the OSD-T&E (Office of Secretary Defense-Test and
   Evaluation), Defense-Wide/PE0601120D8Z National Defense Education
   Program (NDEP)/BA-1, Basic Research; SMART Program Office,
   www.asee.org/fellowships/smart, Grant Number N00244-09-1-0081. This work
   is approved for public release, case number 88ABW-2012-1644.
NR 42
TC 18
Z9 18
U1 4
U2 46
PU SPRINGER
PI DORDRECHT
PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS
SN 1381-298X
J9 COMPUT MATH ORGAN TH
JI Comput. Math. Organ. Theory
PD SEP
PY 2012
VL 18
IS 3
SI SI
BP 257
EP 279
DI 10.1007/s10588-012-9121-2
PG 23
WC Computer Science, Interdisciplinary Applications; Mathematics,
   Interdisciplinary Applications; Social Sciences, Mathematical Methods
SC Computer Science; Mathematics; Mathematical Methods In Social Sciences
GA 993TX
UT WOS:000307883600002
ER

PT J
AU Rodriquez, J
   Miller, JO
   Bauer, KW
AF Rodriquez, J.
   Miller, J. O.
   Bauer, K. W.
TI Mathematical description of a discrete event simulation (DEVS) using
   factor analytic method
SO JOURNAL OF THE OPERATIONAL RESEARCH SOCIETY
LA English
DT Article
DE networks and graphs; simulation; statistics
AB Appropriately capturing the logic or results of a detailed simulation through some kind of aggregation to pass up a model hierarchy is a difficult task. This aggregation task involves two main questions: 'what' to aggregate and 'how' to perform this aggregation. This paper provides a well-defined approach for the 'what' portion of the aggregation process for hierarchical simulation models. We start by characterizing a simulation model in a mathematical format. We then use this mathematical description to identify what portion of a lower-level model can be aggregated, or to capture the logical flow of the full lower-level model. A useful mathematical representation of the simulation structure and logic is through the development of a network representation of the model. This, in turn, can be systematically decomposed into smaller sub-networks by performing model decomposition by means of factor analytic methods, which is the main topic of discussion. Journal of the Operational Research Society (2012) 63, 1179-1188. doi:10.1057/jors.2011.107 Published online 21 December 2011
C1 [Miller, J. O.] USAF, Inst Technol, Grad Sch Engn & Management, Dept Operat Sci, Wright Patterson AFB, OH 45433 USA.
   [Rodriquez, J.] USAF, Manpower & Personnel Directorate, Washington, DC 20330 USA.
RP Miller, JO (reprint author), USAF, Inst Technol, Grad Sch Engn & Management, Dept Operat Sci, 2950 Hobson Way, Wright Patterson AFB, OH 45433 USA.
NR 24
TC 0
Z9 0
U1 1
U2 6
PU PALGRAVE MACMILLAN LTD
PI BASINGSTOKE
PA BRUNEL RD BLDG, HOUNDMILLS, BASINGSTOKE RG21 6XS, HANTS, ENGLAND
SN 0160-5682
J9 J OPER RES SOC
JI J. Oper. Res. Soc.
PD SEP
PY 2012
VL 63
IS 9
BP 1179
EP 1188
DI 10.1057/jors.2011.107
PG 10
WC Management; Operations Research & Management Science
SC Business & Economics; Operations Research & Management Science
GA 993PO
UT WOS:000307872200001
ER

PT J
AU Markov, NP
   DuBose, JJ
   Scott, D
   Propper, BW
   Clouse, WD
   Thompson, B
   Blackbourne, LH
   Rasmussen, TE
AF Markov, Nickolay P.
   DuBose, Joseph J.
   Scott, Daniel
   Propper, Brandon W.
   Clouse, W. Darrin
   Thompson, Billy
   Blackbourne, Lorne H.
   Rasmussen, Todd E.
TI Anatomic distribution and mortality of arterial injury in the wars in
   Afghanistan and Iraq with comparison to a civilian benchmark
SO JOURNAL OF VASCULAR SURGERY
LA English
DT Article
ID TRAUMA-DATA-BANK; EXTREMITY VASCULAR INJURY; PENETRATING FEMOROPOPLITEAL
   INJURY; DAMAGE CONTROL RESUSCITATION; OPERATION-ENDURING-FREEDOM; COMBAT
   CASUALTY CARE; BALAD AIR BASE; COMPLETE MANAGEMENT; LOCAL-POPULATION;
   CONTROL ADJUNCT
AB Objective: The purpose of this study was to examine the anatomic distribution and associated mortality of combat-related vascular injuries comparing them to a contemporary civilian standard.
   Design: The Joint Trauma Theater Registry (JTTR) was queried to identify patients with major compressible arterial injury (CAI) and noncompressible arterial injury (NCAI) sites, and their outcomes, among casualties in Iraq and Afghanistan from 2003 to 2006. The National Trauma Data Bank (NTDB) was then queried over the same time frame to identify civilian trauma patients with similar arterial injuries. Propensity score-based matching was used to create matched patient cohorts from both populations for analysis.
   Results: Registry queries identified 380 patients from the JTTR and 7020 patients from the NTDB who met inclusion criteria. Propensity score matching for age, elevated Injury Severity Score (ISS; >15), and hypotension on arrival (systolic blood pressure [SBP] <90) resulted in 167 matched patients from each registry. The predominating mechanism of injury among matched JTTR patients was explosive events (73.1%), whereas penetrating injury was more common in the NTDB group (61.7%). In the matched cohorts, the incidence of NCAI did not differ (22.2% JTTR vs 26.6% NTDB; P = .372), but the NTDB patients had a higher incidence of CAI (73.7% vs 59.3%; P = .005). The JTTR cohort was also found to have a higher incidence of associated venous injury (57.5% vs 23.4%; P < .001). Overall, the matched JTTR cohort had a lower mortality than NTDB counterparts (4.2% vs 12.6%; P = .006), a finding that was also noted among patients with NCAI (10.8% vs 36.4%; P = .008). There was no difference in mortality between matched JTTR and NTDB patients with CAI overall (2.0% vs 4.1%; P = .465), or among those presenting with Glasgow Coma Scale (GCS) < 8 (28.6% vs 40.0%; P = 1.00) or shock (SBP < 90; 10.5% vs 7.7%; P = 1.00). The JTTR mortality rate among patients with CAI was, however, lower among patients with ISS >15 compared with civilian matched counterparts (10.7% vs 42.4%; P = .006).
   Conclusions: Mortality of injured service personnel who reach a medical treatment facility after major arterial injury compares favorably to a matched civilian standard. Acceptable mortality rates within the military cohort are related to key aspects of an organized Joint Trauma System, including prehospital tactical combat casualty care, rapid medical evacuation to forward surgical capability, and implementation of clinical practice guidelines. Aspects of this comprehensive combat casualty care strategy may translate and be of value to management of arterial injury in the civilian sector. (J Vasc Surg 2012;56:728-36.)
C1 [Markov, Nickolay P.; Scott, Daniel; Propper, Brandon W.; Clouse, W. Darrin; Thompson, Billy; Blackbourne, Lorne H.; Rasmussen, Todd E.] USA, Inst Surg Res, Ft Sam Houston, TX 78234 USA.
   [DuBose, Joseph J.] USAF, Ctr Sustainment Trauma Readiness & Skills C STARS, Baltimore, MD USA.
RP Rasmussen, TE (reprint author), USA, Inst Surg Res, 3698 Chambers Pass, Ft Sam Houston, TX 78234 USA.
EM todd.rasmussen@amedd.army.mil
NR 47
TC 17
Z9 20
U1 0
U2 0
PU MOSBY-ELSEVIER
PI NEW YORK
PA 360 PARK AVENUE SOUTH, NEW YORK, NY 10010-1710 USA
SN 0741-5214
J9 J VASC SURG
JI J. Vasc. Surg.
PD SEP
PY 2012
VL 56
IS 3
BP 728
EP 736
DI 10.1016/j.jvs.2012.02.048
PG 9
WC Surgery; Peripheral Vascular Disease
SC Surgery; Cardiovascular System & Cardiology
GA 996KM
UT WOS:000308085500020
PM 22795520
ER

PT J
AU Akers, BF
   Gao, WX
AF Akers, Benjamin F.
   Gao, Wenxuan
TI WILTON RIPPLES IN WEAKLY NONLINEAR MODEL EQUATIONS
SO COMMUNICATIONS IN MATHEMATICAL SCIENCES
LA English
DT Article
DE Water waves; nonlinear waves; resonances
ID TRAVELING WATER-WAVES; CAPILLARY SOLITARY WAVES; FREE-SURFACE FLOWS;
   DEEP-WATER; GRAVITY-WAVES; FINITE-AMPLITUDE; STABILITY; COMPUTATION;
   EXPANSION; LUMPS
AB Traveling near-bichromatic solutions supported at resonant frequencies are computed in a family of nonlinear model equations. Wilton's expansion is calculated for these solutions to all orders, and used as the basis for a perturbative numerical method for computing near-bichromatic traveling waves. The perturbative method relies on the analyticity of solutions with respect to wave amplitude. Results are compared to a non-perturbative continuation method, and a method for proving analyticity of solutions is proposed.
C1 [Akers, Benjamin F.] USAF, Inst Technol, Dept Math & Stat, Wright Patterson AFB, OH 45433 USA.
   [Gao, Wenxuan] Univ Illinois, Dept Comp Sci, Chicago, IL 60607 USA.
RP Akers, BF (reprint author), USAF, Inst Technol, Dept Math & Stat, Wright Patterson AFB, OH 45433 USA.
EM Benjamin.Akers@afit.edu
NR 35
TC 5
Z9 5
U1 0
U2 1
PU INT PRESS BOSTON, INC
PI SOMERVILLE
PA PO BOX 43502, SOMERVILLE, MA 02143 USA
SN 1539-6746
J9 COMMUN MATH SCI
JI Commun. Math. Sci.
PD SEP
PY 2012
VL 10
IS 3
BP 1015
EP 1024
PG 10
WC Mathematics, Applied
SC Mathematics
GA 990SQ
UT WOS:000307652200015
ER

PT J
AU Valtier, S
   Bebarta, VS
AF Valtier, Sandra
   Bebarta, Vikhyat S.
TI Excretion Profile of Hydrocodone, Hydromorphone and Norhydrocodone in
   Urine Following Single Dose Administration of Hydrocodone to Healthy
   Volunteers
SO JOURNAL OF ANALYTICAL TOXICOLOGY
LA English
DT Article
ID TANDEM MASS-SPECTROMETRY; LIQUID-CHROMATOGRAPHY; GC-MS; HUMAN PLASMA;
   OXYCODONE; OXYMORPHONE; METABOLISM; MORPHINE; CODEINE; BLOOD
C1 [Valtier, Sandra] Div Clin Res, Lackland AFB, TX 78236 USA.
   [Bebarta, Vikhyat S.] Dept Emergency Med, Lackland AFB, TX 78236 USA.
RP Valtier, S (reprint author), Div Clin Res, 59th Med Wing, Lackland AFB, TX 78236 USA.
EM sandra.valtier@us.af.mil
RI bebarta, vikhyat/K-3476-2015
NR 29
TC 8
Z9 8
U1 0
U2 7
PU OXFORD UNIV PRESS INC
PI CARY
PA JOURNALS DEPT, 2001 EVANS RD, CARY, NC 27513 USA
SN 0146-4760
J9 J ANAL TOXICOL
JI J. Anal. Toxicol.
PD SEP
PY 2012
VL 36
IS 7
BP 507
EP 514
PG 8
WC Chemistry, Analytical; Toxicology
SC Chemistry; Toxicology
GA 991GA
UT WOS:000307688300006
PM 22782534
ER

PT J
AU Chen, CG
   Langat, J
   Raghavan, D
AF Chen, Chenggang
   Langat, J.
   Raghavan, D.
TI Processing and thermal properties evaluation of silylated
   apophyllite-filled epoxy nanocomposite
SO POLYMERS FOR ADVANCED TECHNOLOGIES
LA English
DT Article
DE Nanocomposite; Clay filled; Silylation
ID LAYERED SILICATE NANOCOMPOSITES; NYLON 6-CLAY HYBRID;
   MECHANICAL-PROPERTIES; POLYMER NANOCOMPOSITES; IMIDAZOLIUM SALTS;
   MONTMORILLONITE; DEGRADATION; MORPHOLOGY; MAGADIITE; BEHAVIOR
AB The primary objective of the research was to evaluate the rheology and thermal properties of silylated apophyllitefilled epoxy nanocomposite. Several n-octyldimethylsiloxy-apophyllite with different grafting degrees were synthesized by controlling the ratio of the apophyllite and n-octyldimethylchlorosilane. The thermal studies of silylated apophyllite have shown that the onset decomposition temperature of silylated apophyllite far exceeds the onset temperature of conventional organoclays (similar to 260?degrees C). Chemorheological measurements of 1.8?wt% silylated apophyllitefilled tetra functional epoxy (MY720) and difunctional epoxy (DER661) resin mixture showed that the addition of the silylated apophyllite does not dramatically affect the cure profile of the epoxy resin with the availability of 40?min of processing window after the addition of apophyllite. Wide angle X-ray diffraction and transmission electron microscopy results of the shear mixed and cured nanocomposite suggest that the apophyllite was well dispersed in the epoxy matrix. The thermal studies of epoxy nanocomposite showed an increase in the char yield on the addition of silylated apophyllite to the epoxy resin. In addition, an improvement in the onset decomposition temperature of the cyanopropyldimethylsiloxy-apophyllite epoxy nanocomposite was observed compared with that of pure epoxy resin. Copyright (c) 2011 John Wiley & Sons, Ltd.
C1 [Chen, Chenggang] USAF, Res Lab, Wright Patterson AFB, OH 45433 USA.
   [Chen, Chenggang] Univ Dayton, Res Inst, Dayton, OH 45469 USA.
   [Langat, J.; Raghavan, D.] Howard Univ, Dept Chem, Polymer Grp, Washington, DC 20059 USA.
RP Chen, CG (reprint author), USAF, Res Lab, 2941 Hobson Way, Wright Patterson AFB, OH 45433 USA.
EM Chenggang.Chen@wpafb.af.mil; draghavan@howard.edu
FU Air Force Office of Scientific Research [FA9550-04-1-0021]
FX This work was supported by the Air Force Office of Scientific Research
   under grant no. FA9550-04-1-0021. The authors thank M. Zammarano from
   NIST (for assistance with processing of the nanocomposite) and Alexander
   Morgan from UDRI (for TEM measurements) for their contribution to this
   work. The authors also thank Dr. Tia Benson Tolle for facilitating the
   experiments at the Air Force Research Laboratory.
NR 37
TC 2
Z9 2
U1 2
U2 18
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 1042-7147
J9 POLYM ADVAN TECHNOL
JI Polym. Adv. Technol.
PD SEP
PY 2012
VL 23
IS 9
BP 1287
EP 1296
DI 10.1002/pat.2047
PG 10
WC Polymer Science
SC Polymer Science
GA 989FQ
UT WOS:000307546100011
ER

PT J
AU Cannon, J
   Krokhmal, PA
   Chen, Y
   Murphey, R
AF Cannon, Jordan
   Krokhmal, Pavlo A.
   Chen, Yong
   Murphey, Robert
TI Detection of temporal changes in psychophysiological data using
   statistical process control methods
SO COMPUTER METHODS AND PROGRAMS IN BIOMEDICINE
LA English
DT Article
DE Statistical process control; Control charts; Psychophysiological data;
   Electroencephalogram; Electrooculogram
ID PRINCIPAL COMPONENTS; ADAPTIVE AUTOMATION; MENTAL WORKLOAD;
   TASK-DIFFICULTY; EEG; INDEXES; SYSTEM; FLIGHT
AB We consider the problem of detecting temporal changes in the functional state of human subjects due to varying levels of cognitive load using real-time psychophysiological data. The proposed approach relies on monitoring several channels of electroencephalogram (EEG) and electrooculogram (EOG) signals using the methods of statistical process control. It is demonstrated that control charting methods are capable of detecting changes in psychophysiological signals that are induced by varying cognitive load with high accuracy and low false alarm rates, and are capable of accommodating subject-specific differences while being robust with respect to differences between different trials performed by the same subject. (C) 2011 Elsevier Ireland Ltd. All rights reserved.
C1 [Cannon, Jordan; Krokhmal, Pavlo A.; Chen, Yong] Univ Iowa, Dept Mech & Ind Engn, Iowa City, IA 52242 USA.
   [Murphey, Robert] USAF, Res Lab, Munit Directorate, Eglin AFB, FL 32542 USA.
RP Krokhmal, PA (reprint author), Univ Iowa, Dept Mech & Ind Engn, 3131 Seamans Ctr, Iowa City, IA 52242 USA.
EM krokhmal@engineering.uiowa.edu
FU National Science Foundation; Air Force Office of Scientific Research
FX J. Cannon acknowledges support from the National Science Foundation's
   Graduate Research Fellowship; P. Krokhmal and R. Murphey acknowledge
   support from the Air Force Office of Scientific Research.
NR 33
TC 6
Z9 6
U1 2
U2 10
PU ELSEVIER IRELAND LTD
PI CLARE
PA ELSEVIER HOUSE, BROOKVALE PLAZA, EAST PARK SHANNON, CO, CLARE, 00000,
   IRELAND
SN 0169-2607
J9 COMPUT METH PROG BIO
JI Comput. Meth. Programs Biomed.
PD SEP
PY 2012
VL 107
IS 3
BP 367
EP 381
DI 10.1016/j.cmpb.2011.01.003
PG 15
WC Computer Science, Interdisciplinary Applications; Computer Science,
   Theory & Methods; Engineering, Biomedical; Medical Informatics
SC Computer Science; Engineering; Medical Informatics
GA 983CI
UT WOS:000307093400002
PM 21377752
ER

PT J
AU Wertz, J
   Shen, MH
   Scott-Emuakpor, O
   George, T
   Cross, C
AF Wertz, J.
   Shen, M. -H. H.
   Scott-Emuakpor, O.
   George, T.
   Cross, C.
TI An Energy-Based Torsional-Shear Fatigue Lifing Method
SO EXPERIMENTAL MECHANICS
LA English
DT Article
DE Energy-based; Shear; Fatigue; Lifing
ID LIFE PREDICTION
AB An energy-based fatigue-life prediction framework for the determination of full-life, remaining-life, and critical-life of in-service structures subjected to torsional-shear loading has been developed. This framework is developed upon the existing foundation of energy-based fatigue models crafted for the axial, uniaxial bending, and transverse-shear loading cases, which state: the total strain energy density accumulated during both a monotonic event and a cumulative cyclic process is the same material property. The modified energy-based torsional-shear fatigue-life prediction framework is composed of the following entities: (1) the development of a torsional-shear fatigue testing procedure capable of assessing strain energy density per cycle in a pure shear stress state and (2) the determination of the remaining-life and critical-life of in-service aluminum (Al) 6061-T6 structures subjected to shear fatigue through the application of the energy-based prediction method. Experimental data was shown to be affected by load-frame misalignment which was estimated and successfully incorporated into the validation results. Close correlation between adjusted experimental results and the full-life and critical-life predictions stemmed from a 3-to-2 shear-to-axial biaxial loading assumption, which was supported by crack path comparisons. Results of the study effectively demonstrated the versatility of the energy-based lifing method.
C1 [Wertz, J.; Shen, M. -H. H.] Ohio State Univ, Dept Mech & Aerosp Engn, Columbus, OH 43210 USA.
   [Scott-Emuakpor, O.; George, T.; Cross, C.] USAF, Res Lab, Greene, OH 45433 USA.
RP Shen, MH (reprint author), Ohio State Univ, Dept Mech & Aerosp Engn, Columbus, OH 43210 USA.
EM shen.1@osu.edu
FU Dayton Area Graduate Studies Institute (DAGSI); Air Force Research
   Laboratory (AFRL), the Turbine Engine Fatigue Facility (TEFF)
FX The authors would like to thank the Dayton Area Graduate Studies
   Institute (DAGSI) for their financial support of this research, without
   which it would not be possible. Additionally, the authors would like to
   thank the Air Force Research Laboratory (AFRL), specifically the Turbine
   Engine Fatigue Facility (TEFF), for their financial support, facility
   and equipment access, and encouragement of this research.
NR 19
TC 6
Z9 6
U1 0
U2 4
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 0014-4851
J9 EXP MECH
JI Exp. Mech.
PD SEP
PY 2012
VL 52
IS 7
BP 705
EP 715
DI 10.1007/s11340-011-9536-6
PG 11
WC Materials Science, Multidisciplinary; Mechanics; Materials Science,
   Characterization & Testing
SC Materials Science; Mechanics
GA 985OI
UT WOS:000307275700005
ER

PT J
AU Letcher, T
   Shen, MHH
   Scott-Emuakpor, O
   George, T
   Cross, C
AF Letcher, T.
   Shen, M. -H. H.
   Scott-Emuakpor, O.
   George, T.
   Cross, C.
TI An energy-based critical fatigue life prediction method for AL6061-T6
SO FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES
LA English
DT Article
DE cyclic behaviour; fatigue; strain energy
AB An energy-based critical fatigue life prediction method is developed and analysed. The original energy-based fatigue life prediction theory states that the number of cycles to failure is estimated by dividing the total energy accumulated during a monotonic fracture by the strain energy per cycle. Because the accuracy of this concept is heavily dependent on the cyclic behaviour of the material, a precise understanding of the strain energy behaviour throughout each failure process is necessary. Examination of the stress and strain during fatigue tests shows that the cyclic strain energy behaviour is not perfectly stable as initially presumed. It was discovered that fatigue hysteresis energy always accumulates to the same amount of energy by the end of the stable energy region, which has led to a new critical energy material property. Characterization of strain energy throughout the fatigue process has thus improved the understanding of an energy-based fatigue life prediction method.
C1 [Letcher, T.; Shen, M. -H. H.] Ohio State Univ, Dept Mech & Aerosp Engn, Columbus, OH 43210 USA.
   [Scott-Emuakpor, O.; George, T.; Cross, C.] USAF, Res Lab, Wright Patterson AFB, OH USA.
RP Shen, MH (reprint author), Ohio State Univ, Dept Mech & Aerosp Engn, 201 W 19th Ave, Columbus, OH 43210 USA.
EM shen.1@osu.edu
FU Air Force Research Laboratories (AFRL); Turbine Engine Fatigue Facility
   (TEFF)
FX The authors would like to thank the Air Force Research Laboratories
   (AFRL), specifically the Turbine Engine Fatigue Facility (TEFF), for the
   use of their facilities/equipment and financial support. Also, thanks to
   Hakan Ozaltun and John Wertz for helpful discussions.
NR 20
TC 11
Z9 11
U1 0
U2 4
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 8756-758X
J9 FATIGUE FRACT ENG M
JI Fatigue Fract. Eng. Mater. Struct.
PD SEP
PY 2012
VL 35
IS 9
BP 861
EP 870
DI 10.1111/j.1460-2695.2011.01669.x
PG 10
WC Engineering, Mechanical; Materials Science, Multidisciplinary
SC Engineering; Materials Science
GA 982NG
UT WOS:000307051400005
ER

PT J
AU Huang, HS
   Roy, AK
   Varshney, V
   Wohlwend, JL
   Putnam, SA
AF Huang, H. Sam
   Roy, Ajit K.
   Varshney, Vikas
   Wohlwend, Jennifer L.
   Putnam, Shawn A.
TI Temperature dependence of thermal conductance between aluminum and water
SO INTERNATIONAL JOURNAL OF THERMAL SCIENCES
LA English
DT Article
DE Molecular dynamics; Electron-phonon; Phonon-phonon; Thermal conductance
ID MOLECULAR-DYNAMICS; HEAT-FLOW; SOLIDS; TRANSPORT
AB We present a method to obtain temperature dependence of thermal conductance between aluminum and water. The temperature dependence of thermal boundary conductance (TBC) including phonon-phonon interactions and electron-phonon interactions is predicted. The contribution from phonon-phonon interactions is calculated by molecular dynamics (MD) simulation. With time-domain thermo-reflectance experiments, the thermal conductance of electron-phonon interactions is extracted. The temperature dependence of total thermal conductance is calculated by combining the thermal conductance contributed by phonon-phonon interactions and electron-phonon interactions. Thermal boundary conductance increases as temperature increases from 273 K to 373 K. (C) 2012 Elsevier Masson SAS. All rights reserved.
C1 [Huang, H. Sam; Varshney, Vikas; Wohlwend, Jennifer L.; Putnam, Shawn A.] Universal Technol Corp, Dayton, OH 45432 USA.
   [Huang, H. Sam; Roy, Ajit K.; Varshney, Vikas; Wohlwend, Jennifer L.; Putnam, Shawn A.] USAF, Res Lab, Thermal Sci & Mat Branch, Mat & Mfg Directorate, Dayton, OH 45433 USA.
RP Huang, HS (reprint author), Universal Technol Corp, 1270 N Fairfield Rd, Dayton, OH 45432 USA.
EM hsengji.huang@wpafb.af.mil
FU Air Force Research Lab (AFRL) [FA8650-07-D-5800]; AFRL thermal STT
FX Financial support from Air Force Research Lab (AFRL) under contract
   number FA8650-07-D-5800 and the AFRL thermal STT is gratefully
   acknowledged.
NR 23
TC 1
Z9 1
U1 0
U2 2
PU ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER
PI PARIS
PA 23 RUE LINOIS, 75724 PARIS, FRANCE
SN 1290-0729
EI 1778-4166
J9 INT J THERM SCI
JI Int. J. Therm. Sci.
PD SEP
PY 2012
VL 59
BP 17
EP 20
DI 10.1016/j.ijthermalsci.2012.04.016
PG 4
WC Thermodynamics; Engineering, Mechanical
SC Thermodynamics; Engineering
GA 978SI
UT WOS:000306765700003
ER

PT J
AU Senkov, ON
   Senkova, SV
   Dimiduk, DM
   Woodward, C
   Miracle, DB
AF Senkov, O. N.
   Senkova, S. V.
   Dimiduk, D. M.
   Woodward, C.
   Miracle, D. B.
TI Oxidation behavior of a refractory NbCrMo0.5Ta0.5TiZr alloy
SO JOURNAL OF MATERIALS SCIENCE
LA English
DT Article
ID HIGH-ENTROPY ALLOYS; NIOBIUM; COMPOSITES; ENGINE; OXYGEN
AB Isothermal oxidation behavior of a refractory high-entropy NbCrMo0.5Ta0.5TiZr alloy was studied during heating at 1273 K for 100 h in flowing air. Continuous weight gain occurred during oxidation, and the time dependence of the weight gain per unit surface area was described by a parabolic dependence with the time exponent n = 0.6. X-ray diffraction and scanning electron microscopy accompanied by energy-dispersive X-ray spectroscopy showed that the continuous oxide scale was made of complex oxides and only local (on the submicron levels) redistribution of the alloying elements occurred during oxidation. The alloy has a better combination of mechanical properties and oxidation resistance than commercial Nb alloys and earlier reported developmental Nb-Si-Al-Ti and Nb-Si-Mo alloys.
C1 [Senkov, O. N.; Senkova, S. V.] UES Inc, Dayton, OH 45432 USA.
   [Senkov, O. N.; Senkova, S. V.; Dimiduk, D. M.; Woodward, C.; Miracle, D. B.] USAF, Res Lab, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA.
RP Senkov, ON (reprint author), UES Inc, Dayton, OH 45432 USA.
EM oleg.senkov@wpafb.af.mil
RI Senkov, Oleg/C-7197-2012
OI Senkov, Oleg/0000-0001-5587-415X
FU Air Force Research Laboratory; USAF [FA8650-10-5226]
FX Technical support from Drs. Carmen Carney and Fred Meisenkothen is
   greatly appreciated. This work was supported through the Air Force
   Research Laboratory Director's Fund and through USAF contract No.
   FA8650-10-5226.
NR 31
TC 36
Z9 37
U1 9
U2 78
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 SEP
PY 2012
VL 47
IS 18
BP 6522
EP 6534
DI 10.1007/s10853-012-6582-0
PG 13
WC Materials Science, Multidisciplinary
SC Materials Science
GA 965YX
UT WOS:000305804800006
ER

PT J
AU Balcan, DC
   Srinivasa, G
   Fickus, M
   Kovacevic, J
AF Balcan, Doru C.
   Srinivasa, Gowri
   Fickus, Matthew
   Kovacevic, Jelena
TI Guaranteeing convergence of iterative skewed voting algorithms for image
   segmentation
SO APPLIED AND COMPUTATIONAL HARMONIC ANALYSIS
LA English
DT Article
DE Active Masks; Cellular automata; Convergence; Segmentation
ID DIFFUSION; MOTION
AB In this paper we provide rigorous proof for the convergence of an iterative voting-based image segmentation algorithm called Active Masks. Active Masks (AM) was proposed to solve the challenging task of delineating punctate patterns of cells from fluorescence microscope images. Each iteration of AM consists of a linear convolution composed with a nonlinear thresholding; what makes this process special in our case is the presence of additive terms whose role is to "skew" the voting when prior information is available. In real-world implementation, the AM algorithm always converges to a fixed point. We study the behavior of AM rigorously and present a proof of this convergence. The key idea is to formulate AM as a generalized (parallel) majority cellular automaton, adapting proof techniques from discrete dynamical systems. (C) 2012 Elsevier Inc. All rights reserved.
C1 [Balcan, Doru C.] Georgia Inst Technol, Sch Interact Comp, Coll Comp Bldg, Atlanta, GA 30332 USA.
   [Srinivasa, Gowri] PES Sch Engn, Dept Informat Sci & Engn, Bangalore, Karnataka, India.
   [Srinivasa, Gowri] PES Sch Engn, Ctr Pattern Recognit, Bangalore, Karnataka, India.
   [Fickus, Matthew] USAF, Inst Technol, Dept Math & Stat, Wright Patterson AFB, OH 45433 USA.
   [Kovacevic, Jelena] Carnegie Mellon Univ, Dept Biomed Eng Elect & Comp Eng, Pittsburgh, PA 15213 USA.
   [Kovacevic, Jelena] Carnegie Mellon Univ, Ctr Bioimage Informat, Pittsburgh, PA 15213 USA.
RP Balcan, DC (reprint author), Georgia Inst Technol, Sch Interact Comp, Coll Comp Bldg, Room 218,801 Atlantic Dr, Atlanta, GA 30332 USA.
EM dbalcan@cc.gatech.edu; gsrinivasa@pes.edu; Matthew.Fickus@afit.edu;
   jelenak@cmu.edu
FU NSF CCF [1017278]; NSF DMS [1042701]; AFOSR [F1ATA00183G003,
   F1ATA00083G004, FlATA0035J001]; NIH [R03-EB008870]
FX We thank Prof. Adam D. Linstedt and Dr. Yusong Guo for providing the
   biological images which were the original inspiration for the AM
   algorithm and this work. Fickus and Kovacevie were jointly supported by
   NSF CCF 1017278. Fickus received additional support from NSF DMS 1042701
   and AFOSR F1ATA00183G003, F1ATA00083G004 and FlATA0035J001. Kovacevie
   also received support from NIH R03-EB008870. The views expressed in this
   article are those of the authors and do not reflect the official policy
   or position of the United States Air Force, Department of Defense, or
   the U.S. Government.
NR 13
TC 2
Z9 2
U1 0
U2 7
PU ACADEMIC PRESS INC ELSEVIER SCIENCE
PI SAN DIEGO
PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA
SN 1063-5203
J9 APPL COMPUT HARMON A
JI Appl. Comput. Harmon. Anal.
PD SEP
PY 2012
VL 33
IS 2
BP 300
EP 308
DI 10.1016/j.acha.2012.03.008
PG 9
WC Mathematics, Applied; Physics, Mathematical
SC Mathematics; Physics
GA 962KU
UT WOS:000305544800008
PM 22984338
ER

PT J
AU Yu, WB
   Blair, M
AF Yu, Wenbin
   Blair, Maxwell
TI GEBT: A general-purpose nonlinear analysis tool for composite beams
SO COMPOSITE STRUCTURES
LA English
DT Article
DE Composite beams; Geometrical nonlinear; VABS; GEBT; Dimensional
   reduction
ID INTRINSIC EQUATIONS; DYNAMICS; VIBRATION; ELEMENT
AB Geometrically Exact Beam Theory (GEBT), a general-purpose tool for nonlinear analysis of composite slender structures, is developed to meet the design challenges associated with future engineering systems featuring highly-flexible slender structures made of composites. GEBT is based on the mixed formulation of the geometric exact beam theory which can capture all geometric nonlinearities due to large deflections and rotations, subject to the strains being small. Coupled with Variational Beam Sectional Analysis (VABS), a general-purpose cross-sectional analysis, GEBT can effectively analyze geometric nonlinear behavior of slender structures having arbitrary cross-sections made of arbitrary materials. (c) 2012 Elsevier Ltd. All rights reserved.
C1 [Yu, Wenbin] Utah State Univ, Logan, UT 84322 USA.
   [Blair, Maxwell] USAF, Res Lab, Wright Patterson AFB, OH 45433 USA.
RP Yu, WB (reprint author), Utah State Univ, Logan, UT 84322 USA.
EM wenbin.yu@usu.edu
RI Yu, Wenbin/B-1916-2009
FU Air Force Summer Faculty Fellowship; Chief Scientist Innovative Research
   Fund at AFRL/RB WPAFB; Advanced Dynamics Inc.
FX The development of GEBT was supported, in part, initially by the 2008
   Air Force Summer Faculty Fellowship and the Chief Scientist Innovative
   Research Fund at AFRL/RB WPAFB, and later by Advanced Dynamics Inc.
   through an Army Small Business Innovation Research project. The views
   and conclusions contained herein are those of the authors and should not
   be interpreted as necessarily representing the official policies or
   endorsement, either expressed or implied, of the funding agency.
NR 24
TC 16
Z9 16
U1 0
U2 9
PU ELSEVIER SCI LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
SN 0263-8223
EI 1879-1085
J9 COMPOS STRUCT
JI Compos. Struct.
PD SEP
PY 2012
VL 94
IS 9
BP 2677
EP 2689
DI 10.1016/j.compstruct.2012.04.007
PG 13
WC Materials Science, Composites
SC Materials Science
GA 963DP
UT WOS:000305600600002
ER

PT J
AU Jha, SK
   Szczepanski, CJ
   Golden, PJ
   Porter, WJ
   John, R
AF Jha, Sushant K.
   Szczepanski, Christopher J.
   Golden, Patrick J.
   Porter, William J., III
   John, Reji
TI Characterization of fatigue crack-initiation facets in relation to
   lifetime variability in Ti-6Al-4V
SO INTERNATIONAL JOURNAL OF FATIGUE
LA English
DT Article
DE Fatigue variability; Crack initiation facets; Ti-6Al-4V; Focused ion
   beam (FIB); Electron Back Scattered Diffraction (EBSD)
ID TITANIUM-ALLOYS; NUCLEATION; PREDICTION; BEHAVIOR; TEXTURE
AB An analysis of fatigue crack-initiation facets from the perspective of variability in lifetime of a duplex microstructure of Ti-6Al-4V is presented. Fatigue variability behavior of this alloy was marked by an increase in the lifetime variability to almost three orders in magnitude as the stress level was decreased. Crack initiation was found to occur primarily from the specimen surface with only a few exceptions where subsurface initiation was recorded. In most cases, and irrespective of lifetime, crack initiation was accompanied by crystallographic facet formation across primary-alpha particles. Crystallographic characterization of faceted grains and their neighborhood was conducted by sectioning across the facets using either focused ion beam or mechanical polishing, and subsequent Electron Back Scattered Diffraction analysis of the sections. The emphasis in this study was on discerning the factors that distinguish the crack-initiating microstructural arrangements and plausible mechanisms producing a life-limiting failure versus a long lifetime failure under nominally similar microstructure and applied stress level. The analyses revealed only subtle differences between the life-limiting and the long-lifetime failure in terms of deformation modes of the faceted grain(s) and their first nearest neighbors on a given section. The facets appeared to form on or near the basal plane in both the life-limiting and the long-lifetime, surface-initiated failures. In the life-limiting case, a combination of slip (in the faceted grain) and normal resolved stress across the facet plane seemed to be operational in facet formation. In the long-lifetime failure, shear along the facet plane appeared to be a more dominant deformation mode. The subtlety of differences indicates that the facet plane and the deformation modes of the faceting grain and its neighbors as determined from a 2D section may not be the most discriminating crack-initiation factors between the two lifetime regimes in this alloy. (C) 2011 Elsevier Ltd. All rights reserved.
C1 [Jha, Sushant K.] Univ Technol Corp, Dayton, OH 45432 USA.
   [Szczepanski, Christopher J.; Golden, Patrick J.; John, Reji] USAF, Res Lab, AFRL RXLMN, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA.
   [Porter, William J., III] Univ Dayton, Res Inst, Dayton, OH 45469 USA.
RP Jha, SK (reprint author), Univ Technol Corp, 1270 N Fairfield Rd, Dayton, OH 45432 USA.
EM sushant.jha@wpafb.af.mil
RI reddy, indra/C-5363-2011
FU Air Force Office of Scientific Research; Air Force [FA8650-07-D-5800,
   FA8650-09-C-5223]
FX This work was performed at the Air Force Research Laboratory, Materials
   and Manufacturing Directorate, AFRL/RXLMN, Wright Patterson Air Force
   Base, OH. The partial financial support of the Air Force Office of
   Scientific Research, Dr. David Stargel, Program Manager, is gratefully
   acknowledged. Three of the authors were partially supported under onsite
   Air Force contracts FA8650-07-D-5800 (SKJ and CJS) and FA8650-09-C-5223
   (WJP). Mr. Benjamin Briskin is acknowledged for his assistance with
   facet angle measurements.
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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 SEP
PY 2012
VL 42
BP 248
EP 257
DI 10.1016/j.ijfatigue.2011.11.017
PG 10
WC Engineering, Mechanical; Materials Science, Multidisciplinary
SC Engineering; Materials Science
GA 948QV
UT WOS:000304518600024
ER

PT J
AU Golden, PJ
   Naboulsi, S
AF Golden, Patrick J.
   Naboulsi, Sam
TI Hybrid contact stress analysis of a turbine engine blade to disk
   attachment
SO INTERNATIONAL JOURNAL OF FATIGUE
LA English
DT Article
DE Fretting fatigue; Stress analysis; Finite element method; Contact stress
ID FRETTING FATIGUE; FRACTURE-MECHANICS; CRACK
AB The present investigation examines an analysis methodology for fretting fatigue in a turbine engine fan disk. This is an important problem for the operators of turbine engines, since it is a significant driver of fatigue damage and failure risk of disks. Fretting fatigue in turbine engines occurs when the blade and disk are pressed together in contact and experience a small oscillating relative displacement due to variations in engine speed and vibratory loading. Fretting causes a very high local stress near the edge of contact resulting in wear, nucleation of cracks, and their growth, which can result in significant reduction in the life of the material. It is dependent on geometry, loading conditions, residual stresses, and surface roughness, among other factors. These complexities are not just physically based, but also computationally challenging. For example, the determination of the local contact stresses accurately depends on the mesh resolution of the finite element method (FEM) model. This has been addressed using various approaches. Recently, a computational hybrid technique was implemented successfully to investigate fretting fatigue of turbine engine blade and disk attachments. The present work extends application to specifically investigate the effects of surface contact in an actual blade and disk assembly using a representative loading mission. The results show consistency with available experimental data. Finally, the knowledge gained from this investigation could be used as a basis for uncertainty analyses of an actual blade and disk assembly. Published by Elsevier Ltd.
C1 [Golden, Patrick J.] USAF, Mat & Mfg Directorate, Res Lab, Wright Patterson AFB, OH 45433 USA.
   [Naboulsi, Sam] High Performance Technol Inc, Reston, VA 20190 USA.
RP Golden, PJ (reprint author), 2230 10th St, Wright Patterson AFB, OH 45433 USA.
EM patrick.golden@wpafb.af.mil
FU Naval Air Systems Command
FX This work was partially supported by the Naval Air Systems Command under
   agreement EDO-08-SA-0021, and Dr. Ramesh Chandra, NAVAIR, is the
   technical point of contact for this activity. The technical
   collaboration with Dr. Michael Enright and Dr. Kwai Chan is also
   acknowledged.
NR 21
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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 SEP
PY 2012
VL 42
BP 296
EP 303
DI 10.1016/j.ijfatigue.2012.01.023
PG 8
WC Engineering, Mechanical; Materials Science, Multidisciplinary
SC Engineering; Materials Science
GA 948QV
UT WOS:000304518600028
ER

PT J
AU Morrissey, RJ
   John, R
   Porter, WJ
AF Morrissey, Ryan J.
   John, Reji
   Porter, W. John, III
TI Fatigue behavior of a thin gage Ni alloy after exposure to elevated
   temperature
SO INTERNATIONAL JOURNAL OF FATIGUE
LA English
DT Article
DE Fatigue; Nickel superalloy; Elevated temperature exposure
ID FOILS
AB Thin gage Ni-base superalloy materials are being targeted for hypersonic applications up to 1100 degrees C. To achieve an optimized system design, standard mechanical behavior data on these materials are needed under a range of loading conditions such as tensile, creep and fatigue at representative temperatures. In order to meet this need, a unique test system developed in-house for determining materials properties of very thin materials was used to determine the fatigue response of a high temperature Ni alloy, both with and without prior exposure to elevated temperatures. This paper examines the effects of elevated temperature exposure on the ductility and fatigue resistance of Haynes 230 with a thickness of 0.127 mm. Published by Elsevier Ltd.
C1 [Morrissey, Ryan J.; John, Reji] USAF, Res Lab, AFRL RXLMN, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA.
   [Porter, W. John, III] Univ Dayton, Res Inst, Dayton, OH 45431 USA.
RP Morrissey, RJ (reprint author), USAF, Res Lab, AFRL RXLMN, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA.
EM ryan.morrissey@wpafb.af.mil
RI reddy, indra/C-5363-2011
FU US Air Force Research Laboratory, Materials and Manufacturing
   Directorate, Metals Branch (AFRL/RXLM), Wright-Patterson AFB, OH; AF
   [FA8650-09-D-5223]
FX This program was funded as part of the Metallic Thermal Protection
   System (MTPS) Program at the US Air Force Research Laboratory, Materials
   and Manufacturing Directorate, Metals Branch (AFRL/RXLM),
   Wright-Patterson AFB, OH. W.J. Porter was supported under AF Contract
   No. FA8650-09-D-5223. The authors gratefully acknowledge the assistance
   of M. Ruddell, P. Blosser, D.J. Buchanan and D. Maxwell from the
   University of Dayton Research Institute in machining, preparing the
   specimens, and performing the tests.
NR 13
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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 SEP
PY 2012
VL 42
BP 304
EP 309
DI 10.1016/j.ijfatigue.2012.02.009
PG 6
WC Engineering, Mechanical; Materials Science, Multidisciplinary
SC Engineering; Materials Science
GA 948QV
UT WOS:000304518600029
ER

PT J
AU Schmidt, N
   Alloway, RR
   Walsh, RC
   Sadaka, B
   Shields, AR
   Girnita, AL
   Hanseman, DJ
   Woodle, ES
AF Schmidt, Nicole
   Alloway, Rita R.
   Walsh, R. Carlin
   Sadaka, Basma
   Shields, Adele R.
   Girnita, Alin L.
   Hanseman, Dennis J.
   Woodle, E. Steve
TI Prospective Evaluation of the Toxicity Profile of Proteasome
   Inhibitor-Based Therapy in Renal Transplant Candidates and Recipients
SO TRANSPLANTATION
LA English
DT Article
DE Toxicity; Proteasome inhibitors; Desensitization; Antibody-mediated
   rejection
ID INDUCED PERIPHERAL NEUROPATHY; ANTIBODY-MEDIATED REJECTION; RELAPSED
   MULTIPLE-MYELOMA; OF-THE-LITERATURE; PSYCHOMETRIC EVALUATION;
   ONCOLOGY-GROUP; PHASE-III; BORTEZOMIB; NEUROTOXICITY; REVERSIBILITY
AB Background. A prospective intermediate-term evaluation of toxicities associated with bortezomib therapy for antibody-mediated rejection (AMR) and desensitization was conducted.
   Methods. Patients were graded for bortezomib-related toxicities: hematologic and gastrointestinal toxicities by Common Terminology Criteria for Adverse Events and peripheral neuropathy by modified Functional Assessment of Cancer Therapy questionnaire and Common Terminology Criteria for Adverse Events.
   Results. Fifty-one patients treated for AMR and 19 patients treated for desensitization received 96 bortezomib cycles (1.3 mg/m(2) x 4 doses); mean (SD) follow-up was 16.3 (9.0) months. Patients treated for AMR and patients treated for desensitization were similar in age, gender, ethnicity, and baseline peripheral neuropathy. Patients treated for AMR received a mean (SD) of 4.9 (2.0) bortezomib doses in 1.3 (0.5) cycles; and patients treated for desensitization, a mean of 7.3 (1.6) doses in 1.8 (0.4) cycles. Prevalence of diabetes and anemia were higher at baseline in patients treated for AMR. In the AMR cohort, two cases of cytomegalovirus infection, two cases of BK virus infection, and one case of Epstein-Barr virus infection were observed. No cases of viral infection were observed in the desensitization cohort. Malignancies were not observed. Significant bortezomib toxicities included anemia and peripheral neuropathy, which were manageable. Anemia was more common in patients treated for AMR; and peripheral neuropathy, more common in patients treated for desensitization.
   Conclusions. Bortezomib-related toxicities in kidney transplant candidates and recipients are low in incidence and severity and vary based on treatment population.
C1 [Schmidt, Nicole; Walsh, R. Carlin; Shields, Adele R.; Woodle, E. Steve] Univ Cincinnati, Coll Med, Dept Surg, Div Transplantat, Cincinnati, OH 45267 USA.
   [Alloway, Rita R.; Sadaka, Basma] Univ Cincinnati, Coll Med, Dept Internal Med, Div Nephrol, Cincinnati, OH 45267 USA.
   [Girnita, Alin L.] Hoxworth Blood Ctr, Cincinnati, OH USA.
   [Hanseman, Dennis J.] Univ Cincinnati, Coll Med, Dept Surg, Div Trauma & Crit Care, Cincinnati, OH 45267 USA.
   [Hanseman, Dennis J.] USAF, Ctr Sustainment Trauma & Readiness Skills, Cincinnati, OH USA.
RP Woodle, ES (reprint author), Univ Cincinnati, Coll Med, Dept Surg, Div Transplantat, 231 Albert Sabin Way,ML 558, Cincinnati, OH 45267 USA.
EM woodlees@uc.edu
FU Millennium; Genzyme
FX Partial funding for this work was provided by Millennium and Genzyme.
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PU LIPPINCOTT WILLIAMS & WILKINS
PI PHILADELPHIA
PA 530 WALNUT ST, PHILADELPHIA, PA 19106-3621 USA
SN 0041-1337
J9 TRANSPLANTATION
JI Transplantation
PD AUG 27
PY 2012
VL 94
IS 4
BP 352
EP 361
DI 10.1097/TP.0b013e318257acf6
PG 10
WC Immunology; Surgery; Transplantation
SC Immunology; Surgery; Transplantation
GA 997CE
UT WOS:000308141000009
PM 22836132
ER

PT J
AU Kwak, J
   Grigsby, CC
   Rizki, MM
   Preti, G
   Koksal, M
   Josue, J
   Yamazaki, K
   Beauchamp, GK
AF Kwak, Jae
   Grigsby, Claude C.
   Rizki, Mateen M.
   Preti, George
   Koeksal, Mustafa
   Josue, Jesusa
   Yamazaki, Kunio
   Beauchamp, Gary K.
TI Differential binding between volatile ligands and major urinary proteins
   due to genetic variation in mice
SO PHYSIOLOGY & BEHAVIOR
LA English
DT Article
DE Differential binding; Major urinary proteins (MUPs); Volatile ligands;
   Gas chromatography-mass spectrometry (GC-MS); Metabolite Differentiation
   and Discovery Lab (MeDDL); Sodium dodecyl sulfate-polyacrylamide gel
   electrophoresis (SDS-PAGE); Isoelectric focusing (IEF) gel
   electrophoresis
ID MALE-MOUSE URINE; MUS-MUSCULUS; HOUSE MOUSE; PHEROMONE BINDING;
   HISTOCOMPATIBILITY COMPLEX; CHEMICAL CHARACTERIZATION; VOMERONASAL
   ORGAN; FEMALE MICE; SIGNALS; MHC
AB Two different structural classes of chemical signals in mouse urine, i.e., volatile organic compounds (VOCs) and the major urinary proteins (MUPs), interact closely because MUPs sequester VOCs. Although qualitative and/or quantitative differences in each chemical class have been reported, previous studies have examined only one of the classes at a time. No study has analyzed these two sets simultaneously, and consequently binding interactions between volatile ligands and proteins in urines of different strains have not been compared. Here, we compared the release of VOCs in male urines of three different inbred strains (C57BL/6J, BALB/b and AKR) before and after denaturation of urinary proteins. mainly MUPs. Both MUP and VOC profiles were distinctive in the intact urine of each strain. Upon denaturation, each of the VOC profiles changed due to the release of ligands previously bound to MUPs. The results indicate that large amounts of numerous ligands are bound to MUPs and that these ligands represent a variety of different structural classes of VOCs. Furthermore, the degree of release in each ligand was different in each strain, indicating that different ligands are differentially bound to proteins in the urines of different strains. Therefore, these data suggest that binding interactions in ligands and MUPs differ between strains, adding yet another layer of complexity to chemical communication in mice. (C) 2012 Elsevier Inc. All rights reserved.
C1 [Kwak, Jae; Preti, George; Josue, Jesusa; Yamazaki, Kunio; Beauchamp, Gary K.] Monell Chem Senses Ctr, Philadelphia, PA 19104 USA.
   [Grigsby, Claude C.] USAF, Human Signatures Branch, Forecasting Div, Human Effectiveness Directorate, Wright Patterson AFB, OH 45433 USA.
   [Rizki, Mateen M.] Wright State Univ, Dept Comp Sci & Engn, Dayton, OH 45435 USA.
   [Preti, George] Univ Penn, Dept Dermatol, Sch Med, Philadelphia, PA 19104 USA.
   [Koeksal, Mustafa] Univ Penn, Roy & Diana Vagelos Labs, Dept Chem, Philadelphia, PA 19104 USA.
RP Kwak, J (reprint author), Monell Chem Senses Ctr, 3500 Market St, Philadelphia, PA 19104 USA.
EM jkwak@monell.org; Claude.Grigsby@wpafb.af.mil; mateen.rizki@wright.edu;
   preti@pobox.upenn.edu; mkoksal@sas.upenn.edu; jjosue@monell.org;
   yamazaki@monell.org; beauchamp@monell.org
RI Kwak, Jae/E-5781-2011
OI Kwak, Jae/0000-0003-4216-2019
FU UES under Air Force prime contract [FA8650-10-C-6152]; U. S. Army
   Research Office [W911NF-11-1-0087]
FX This work was supported by a subcontract from UES under Air Force prime
   contract FA8650-10-C-6152 and by the U. S. Army Research Office under
   grant number W911NF-11-1-0087. Opinions, interpretations, conclusions
   and recommendations are those of the authors and not necessarily
   endorsed by the United States Government. We are grateful to Dr. Kenji
   Mori for providing synthesized chemicals, Ms. Maryanne Opiekun for
   collecting urine samples, and Ms. Karen Chan for useful suggestions on
   earlier versions of this manuscript.
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PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0031-9384
J9 PHYSIOL BEHAV
JI Physiol. Behav.
PD AUG 20
PY 2012
VL 107
IS 1
BP 112
EP 120
DI 10.1016/j.physbeh.2012.06.008
PG 9
WC Psychology, Biological; Behavioral Sciences
SC Psychology; Behavioral Sciences
GA 001HA
UT WOS:000308450000017
PM 22728785
ER

PT J
AU Carns, JL
   Duncan, BD
   Dierking, MP
AF Carns, Jennifer L.
   Duncan, Bradley D.
   Dierking, Matthew P.
TI Saturated semiconductor optical amplifier phase modulation for long
   range laser radar applications
SO APPLIED OPTICS
LA English
DT Article
AB We investigate the use of a semiconductor optical amplifier operated in the saturation regime as a phase modulator for long range laser radar applications. The nature of the phase and amplitude modulation resulting from a high peak power Gaussian pulse, and the impact this has on the ideal pulse response of a laser radar system, is explored. We also present results of a proof-of-concept laboratory demonstration using phase-modulated pulses to interrogate a stationary target. (c) 2012 Optical Society of America
C1 [Carns, Jennifer L.; Dierking, Matthew P.] USAF, Res Lab, Wright Patterson AFB, OH 45433 USA.
   [Duncan, Bradley D.] Univ Dayton, Electroopt Program, Dayton, OH 45469 USA.
RP Carns, JL (reprint author), USAF, Res Lab, 3109 Hobson Way,Bldg 622, Wright Patterson AFB, OH 45433 USA.
EM carnsj1@udayton.edu
FU United States Air Force Research Laboratory (AFRL); Ladar and Optical
   Communications Institute (LOCI) at the University of Dayton, Ohio
FX This effort was supported in part by the United States Air Force
   Research Laboratory (AFRL) and the Ladar and Optical Communications
   Institute (LOCI) at the University of Dayton, Ohio. The authors wish to
   thank Lawrence Barnes of AFRL, and John Schmoll and Timothy Meade of
   Opti-Metrics, Inc., for their valuable contributions to this research.
   The views expressed in this article are those of the authors and do not
   reflect on the official policy of the Air Force, the Department of
   Defense, or the United States government.
NR 18
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U1 0
U2 7
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 AUG 20
PY 2012
VL 51
IS 24
BP 5850
EP 5862
DI 10.1364/AO.51.005850
PG 13
WC Optics
SC Optics
GA 996HX
UT WOS:000308076600014
PM 22907013
ER

PT J
AU Lei, ZW
   Liu, M
   Ge, W
   Fu, ZP
   Reinhardt, K
   Knize, RJ
   Lu, YL
AF Lei, Z. W.
   Liu, M.
   Ge, W.
   Fu, Z. P.
   Reinhardt, K.
   Knize, R. J.
   Lu, Yalin
TI Morphology and optical absorption change of Ag/SiO2 core-shell
   nanoparticles under thermal annealing
SO APPLIED PHYSICS LETTERS
LA English
DT Article
ID SOLAR-CELLS; PARTICLES; SILVER; SHAPE
AB Ag/SiO2 core shell nanoparticles can be potentially useful in solar cells with the expectation to enhance light absorption. Thermal stability of such nanoparticles would be an important issue and has not been investigated much in the past. This research studied both morphological and optical absorption changes when heat-treating Ag/SiO2 core shell nanoparticles at various temperatures. At lower temperatures, Ag diffuses out through the porous shell, and remains inside at higher temperatures when the shell becomes solid. The results are instructive to further apply such nanoparticles into solar cells. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4747803]
C1 [Lei, Z. W.; Liu, M.; Ge, W.; Fu, Z. P.; Lu, Yalin] Univ Sci & Technol China, Dept Mat Sci & Engn, CAS Key Lab Mat Energy Convers, Hefei 230026, Peoples R China.
   [Reinhardt, K.] USAF, Off Sci Res, AFOSR NE, Arlington, VA 22203 USA.
   [Knize, R. J.; Lu, Yalin] USAF Acad, Laser Opt Res Ctr, Dept Phys, Colorado Springs, CO 80840 USA.
   [Lu, Yalin] Hefei Natl Lab Phys Sci Microscale, Hefei 230026, Peoples R China.
RP Liu, M (reprint author), Univ Sci & Technol China, Dept Mat Sci & Engn, CAS Key Lab Mat Energy Convers, Hefei 230026, Peoples R China.
EM liumin1106@ustc.edu.cn; yalin.lu@usafa.edu
RI fu, zhengping/A-3530-2009
OI fu, zhengping/0000-0002-7896-1333
FU National Basic Research Program of China (973 Program) [2012CB922000];
   Natural Science Foundation of China [51102224]; Fundamental Research
   Fund for the Central Universities [WK2060140006, WK2060140005]; China
   Postdoctoral Science Foundation [BH2060140010]
FX Financial support was provided by the National Basic Research Program of
   China (973 Program, 2012CB922000), the Natural Science Foundation of
   China (51102224), the Fundamental Research Fund for the Central
   Universities (WK2060140006, WK2060140005), and the China Postdoctoral
   Science Foundation (BH2060140010).
NR 22
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U1 3
U2 60
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 AUG 20
PY 2012
VL 101
IS 8
AR 083903
DI 10.1063/1.4747803
PG 3
WC Physics, Applied
SC Physics
GA 000WK
UT WOS:000308420800110
ER

PT J
AU Bazzan, G
   Deneault, JR
   Kang, TS
   Pattanaik, G
   Haag, JM
   Taylor, BE
   Durstock, MF
AF Bazzan, Giorgio
   Deneault, James R.
   Kang, Tae-Sik
   Pattanaik, Gyanaranjan
   Haag, Jacob M.
   Taylor, Barney E.
   Durstock, Michael F.
TI Structure-property relationships in nanostructured electrodes for hybrid
   photovoltaics and batteries
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
CT 244th National Fall Meeting of the American-Chemical-Society (ACS)
CY AUG 19-23, 2012
CL Philadelphia, PA
SP Amer Chem Soc, Div Hist Chem, Amer Chem Soc
C1 [Bazzan, Giorgio; Deneault, James R.; Kang, Tae-Sik; Pattanaik, Gyanaranjan; Haag, Jacob M.; Taylor, Barney E.; Durstock, Michael F.] USAF, Res Lab, Wright Patterson AFB, OH 45433 USA.
   [Bazzan, Giorgio] Universal Energy Syst Inc, Dayton, OH 45432 USA.
   [Deneault, James R.; Kang, Tae-Sik; Haag, Jacob M.; Taylor, Barney E.] Universal Technol Corp, Dayton, OH 45432 USA.
EM Michael.Durstock@wpafb.af.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 AUG 19
PY 2012
VL 244
MA 20-PMSE
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA 220XX
UT WOS:000324621807685
ER

PT J
AU Cain, J
   Blunck, D
   Corporan, E
   DeWitt, M
   Striebich, R
   Anneken, D
   Klingshirn, C
   Roquemore, WM
AF Cain, Jeremy
   Blunck, David
   Corporan, Edwin
   DeWitt, Matthew
   Striebich, Richard
   Anneken, David
   Klingshirn, Christopher
   Roquemore, W. M.
TI Characterization of gaseous and particulate emissions from a turboshaft
   engine burning conventional, alternative and surrogate fuels
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
CT 244th National Fall Meeting of the American-Chemical-Society (ACS)
CY AUG 19-23, 2012
CL Philadelphia, PA
SP Amer Chem Soc, Div Hist Chem, Amer Chem Soc
C1 [Cain, Jeremy] CNR, Wright Patterson AFB, OH 45433 USA.
   [Blunck, David; Corporan, Edwin; Roquemore, W. M.] Air Force Res Lab, Prop Directorate, Wright Patterson AFB, OH 45433 USA.
   [DeWitt, Matthew; Striebich, Richard; Anneken, David; Klingshirn, Christopher] Univ Dayton, Res Inst, Dayton, OH 45469 USA.
EM matthew.dewitt@wpafb.af.mil
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 AUG 19
PY 2012
VL 244
MA 187-ENFL
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA 220XX
UT WOS:000324621803664
ER

PT J
AU Chatterjee, S
   Kim, MJ
   Luo, ZT
   Acerce, M
   Yates, DM
   Zakharov, DN
   Kim, SM
   Stach, EA
   Johnson, ATC
   Maruyama, B
   Sneddon, LG
AF Chatterjee, Shahana
   Kim, Myung Jong
   Luo, Zhengtang
   Acerce, Muharrem
   Yates, Douglas M.
   Zakharov, Dmitri N.
   Kim, Seung Min
   Stach, Eric A.
   Johnson, A. T. Charlie
   Maruyama, Benji
   Sneddon, Larry G.
TI Catalytic chemical vapor deposition of boron nitride nanotubes and
   nanosheets from molecular precursors
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
CT 244th National Fall Meeting of the American-Chemical-Society (ACS)
CY AUG 19-23, 2012
CL Philadelphia, PA
SP Amer Chem Soc, Div Hist Chem, Amer Chem Soc
C1 [Chatterjee, Shahana; Kim, Myung Jong; Sneddon, Larry G.] Univ Penn, Dept Chem, Philadelphia, PA 19104 USA.
   [Kim, Myung Jong; Maruyama, Benji] Air Force Res Lab, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA.
   [Luo, Zhengtang; Acerce, Muharrem; Johnson, A. T. Charlie] Univ Penn, Dept Phys, Philadelphia, PA 19104 USA.
   [Yates, Douglas M.] Univ Penn, Res Struct Matter Lab, Philadelphia, PA 19104 USA.
   [Zakharov, Dmitri N.; Kim, Seung Min; Stach, Eric A.] Purdue Univ, Sch Mat Engn, W Lafayette, IN 47907 USA.
   [Zakharov, Dmitri N.; Kim, Seung Min; Stach, Eric A.] Purdue Univ, Birck Nanotechnol Ctr, W Lafayette, IN 47907 USA.
EM shahana@sas.upenn.edu
RI Stach, Eric/D-8545-2011; Zakharov, Dmitri/F-4493-2014
OI Stach, Eric/0000-0002-3366-2153; 
NR 0
TC 0
Z9 0
U1 2
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 AUG 19
PY 2012
VL 244
MA 637-INOR
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA 220XX
UT WOS:000324621805476
ER

PT J
AU DeWitt, M
   West, Z
   Mescher, A
   Stelzenmuller, N
   Zabarnick, S
   Edwards, T
AF DeWitt, Matthew
   West, Zachary
   Mescher, Ann
   Stelzenmuller, Nick
   Zabarnick, Steven
   Edwards, Tim
TI Effect of aromatics addition on the thermal-oxidative stability of
   alternative jet fuels
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
CT 244th National Fall Meeting of the American-Chemical-Society (ACS)
CY AUG 19-23, 2012
CL Philadelphia, PA
SP Amer Chem Soc, Div Hist Chem, Amer Chem Soc
C1 [DeWitt, Matthew; West, Zachary; Zabarnick, Steven] Univ Dayton, Res Inst, Dayton, OH 45469 USA.
   [Mescher, Ann; Stelzenmuller, Nick] Univ Washington, Seattls, WA USA.
   [Edwards, Tim] Air Force Res Lab, Prop Directorate, Wright Patterson AFB, OH 45433 USA.
EM matthew.dewitt@wpafb.af.mil
NR 0
TC 0
Z9 0
U1 1
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 AUG 19
PY 2012
VL 244
MA 258-ENFL
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA 220XX
UT WOS:000324621803729
ER

PT J
AU Drummy, L
   Oyerokun, F
   Vaia, R
AF Drummy, Lawrence
   Oyerokun, Folusho
   Vaia, Richard
TI Model-based Bayesian image segmentation of 3D tomograms from
   polymer-nanoparticle hybrids
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
CT 244th National Fall Meeting of the American-Chemical-Society (ACS)
CY AUG 19-23, 2012
CL Philadelphia, PA
SP Amer Chem Soc, Div Hist Chem, Amer Chem Soc
C1 [Drummy, Lawrence; Oyerokun, Folusho; Vaia, Richard] Air Force Res Lab, Wright Patterson AFB, OH 45433 USA.
EM lawrence.drummy@wpafb.af.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 AUG 19
PY 2012
VL 244
MA 332-POLY
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA 220XX
UT WOS:000324621808490
ER

PT J
AU Duan, XFF
   Burggraf, LW
   Huang, LY
AF Duan, Xaiofeng F.
   Burggraf, Larry W.
   Huang, Lingyu
TI Combined approach of stochastic potential surface and car-Parinello
   simulated annealing simulation for searching for stable SinCn clusters
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
CT 244th National Fall Meeting of the American-Chemical-Society (ACS)
CY AUG 19-23, 2012
CL Philadelphia, PA
SP Amer Chem Soc, Div Hist Chem, Amer Chem Soc
C1 [Duan, Xaiofeng F.] Air Force Res Lab, Wright Patterson AFB, OH 45433 USA.
   [Burggraf, Larry W.] Air Force Inst Technol, Wright Patterson AFB, OH 45433 USA.
   [Huang, Lingyu] Kentucky State Univ, Frankfort, KY 40601 USA.
EM duanx@afrl.hpc.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 AUG 19
PY 2012
VL 244
MA 412-COMP
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA 220XX
UT WOS:000324621803335
ER

PT J
AU Farmer, BL
AF Farmer, Barry L.
TI ICMSE: Changing the paradigm of materials science and engineering for
   the Air Force
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
CT 244th National Fall Meeting of the American-Chemical-Society (ACS)
CY AUG 19-23, 2012
CL Philadelphia, PA
SP Amer Chem Soc, Div Hist Chem, Amer Chem Soc
C1 [Farmer, Barry L.] Air Force Res Lab, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA.
EM barry.farmer@wpafb.af.mil
NR 0
TC 0
Z9 0
U1 2
U2 3
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 AUG 19
PY 2012
VL 244
MA 107-POLY
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA 220XX
UT WOS:000324621808287
ER

PT J
AU Feng, J
   Slocik, JM
   Sarikaya, M
   Naik, RR
   Farmer, BL
   Heinz, H
AF Feng, Jie
   Slocik, Joseph M.
   Sarikaya, Mehmet
   Naik, Rajesh R.
   Farmer, Barry L.
   Heinz, Hendrik
TI Influence of the shape of nanostructured metal surfaces on adsorption of
   single peptide molecules in aqueous solution
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
CT 244th National Fall Meeting of the American-Chemical-Society (ACS)
CY AUG 19-23, 2012
CL Philadelphia, PA
SP Amer Chem Soc, Div Hist Chem, Amer Chem Soc
C1 [Feng, Jie; Heinz, Hendrik] Univ Akron, Dept Polymer Engn, Akron, OH 44325 USA.
   [Slocik, Joseph M.; Naik, Rajesh R.; Farmer, Barry L.] Air Force Res Lab, AFRL RX, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA.
   [Sarikaya, Mehmet] Univ Washington, GEMSEC, Dept Mat Sci & Engn, Seattle, WA 98195 USA.
EM hendrik.heinz@uakron.edu
RI Heinz, Hendrik/E-3866-2010
OI Heinz, Hendrik/0000-0002-6776-7404
NR 0
TC 0
Z9 0
U1 0
U2 5
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 AUG 19
PY 2012
VL 244
MA 133-POLY
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA 220XX
UT WOS:000324621808313
ER

PT J
AU Kelley, JJ
   Jespersen, ML
   Luna-Singh, JA
   Vaia, RA
AF Kelley, John J.
   Jespersen, Michael L.
   Luna-Singh, Jennifer A.
   Vaia, Richard A.
TI Tuning the order and structure of nanoparticle monolayers with opposing
   particle-particle and particle-surface potentials
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
CT 244th National Fall Meeting of the American-Chemical-Society (ACS)
CY AUG 19-23, 2012
CL Philadelphia, PA
SP Amer Chem Soc, Div Hist Chem, Amer Chem Soc
C1 [Kelley, John J.; Jespersen, Michael L.; Luna-Singh, Jennifer A.; Vaia, Richard A.] Air Force Res Lab, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA.
   [Kelley, John J.] UES Inc, Dayton, OH 45432 USA.
EM john.kelley@wpafb.af.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 AUG 19
PY 2012
VL 244
MA 272-COLL
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA 220XX
UT WOS:000324621802467
ER

PT J
AU McMasters, B
   DeWitt, M
   Striebich, R
   Edwards, T
   Phelps, D
AF McMasters, Brian
   DeWitt, Matthew
   Striebich, Richard
   Edwards, Tim
   Phelps, Donald
TI Effect of fuel chemical composition on pyrolytic reactivity and
   deposition propensity under supercritical conditions
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
CT 244th National Fall Meeting of the American-Chemical-Society (ACS)
CY AUG 19-23, 2012
CL Philadelphia, PA
SP Amer Chem Soc, Div Hist Chem, Amer Chem Soc
C1 [McMasters, Brian; DeWitt, Matthew; Striebich, Richard] Univ Dayton Res Inst, Dayton, OH 45469 USA.
   [Edwards, Tim; Phelps, Donald] Air Force Res Lab, Prop Directorate, Wright Patterson AFB, OH 45433 USA.
EM matthew.dewitt@wpafb.af.mil
NR 0
TC 0
Z9 0
U1 1
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 AUG 19
PY 2012
VL 244
MA 252-ENFL
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA 220XX
UT WOS:000324621803723
ER

PT J
AU Minus, DK
   Balster, LM
AF Minus, Donald K.
   Balster, Lori M.
TI Jet fuel parameter prediction and quality assessment analysis using
   nuclear magnetic resonance spectroscopy coupled with chemometrics
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
CT 244th National Fall Meeting of the American-Chemical-Society (ACS)
CY AUG 19-23, 2012
CL Philadelphia, PA
SP Amer Chem Soc, Div Hist Chem, Amer Chem Soc
C1 [Minus, Donald K.] US Air Force Res Lab, Fuels & Energy Branch, Wright Patterson AFB, OH 45433 USA.
   [Balster, Lori M.] Univ Dayton, Res Inst, Dayton, OH 45469 USA.
EM DONALD.MINUS@WPAFB.AF.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 AUG 19
PY 2012
VL 244
MA 190-ENFL
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA 220XX
UT WOS:000324621803667
ER

PT J
AU Moller, JC
   Berry, RJ
   Breitzman, TD
AF Moller, James C.
   Berry, Rajiv J.
   Breitzman, Timothy D.
TI Fracture nucleation in thermoset resins
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
CT 244th National Fall Meeting of the American-Chemical-Society (ACS)
CY AUG 19-23, 2012
CL Philadelphia, PA
SP Amer Chem Soc, Div Hist Chem, Amer Chem Soc
C1 [Moller, James C.] Miami Univ, Dept Mech & Mfg Engn, Oxford, OH 45056 USA.
   [Berry, Rajiv J.; Breitzman, Timothy D.] Air Force Res Lab, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA.
EM mollerjc@muohio.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 AUG 19
PY 2012
VL 244
MA 303-POLY
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA 220XX
UT WOS:000324621808462
ER

PT J
AU Pandey, RB
   Farmer, BL
AF Pandey, Ras B.
   Farmer, Barry L.
TI Multiscale coarse-grained modeling: Self-organizing polymers and
   peptides in nanomaterials
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
CT 244th National Fall Meeting of the American-Chemical-Society (ACS)
CY AUG 19-23, 2012
CL Philadelphia, PA
SP Amer Chem Soc, Div Hist Chem, Amer Chem Soc
C1 [Pandey, Ras B.] Univ So Mississippi, Dept Phys & Astron, Hattiesburg, MS 39406 USA.
   [Farmer, Barry L.] Air Force Res Lab, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA.
EM ras.pandey@usm.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 AUG 19
PY 2012
VL 244
MA 364-POLY
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA 220XX
UT WOS:000324621808520
ER

PT J
AU Ramezani-Dakhel, H
   Mirau, PA
   Naik, RR
   Knecht, MR
   Heinz, H
AF Ramezani-Dakhel, Hadi
   Mirau, Peter A.
   Naik, Rajesh R.
   Knecht, Marc R.
   Heinz, Hendrik
TI Abstraction energy controls catalytic activity of palladium nanocrystals
   in atom leaching carbon-carbon coupling reactions
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
CT 244th National Fall Meeting of the American-Chemical-Society (ACS)
CY AUG 19-23, 2012
CL Philadelphia, PA
SP Amer Chem Soc, Div Hist Chem, Amer Chem Soc
C1 [Ramezani-Dakhel, Hadi; Heinz, Hendrik] Univ Akron, Dept Polymer Engn, Akron, OH 44325 USA.
   [Mirau, Peter A.; Naik, Rajesh R.] Air Force Res Lab, Nanostruct & Biol Mat Branch, Wright Patterson AFB, OH 45433 USA.
   [Knecht, Marc R.] Univ Miami, Dept Chem, Coral Gables, FL 33124 USA.
EM hr15@zips.uakron.edu
RI Heinz, Hendrik/E-3866-2010
OI Heinz, Hendrik/0000-0002-6776-7404
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 AUG 19
PY 2012
VL 244
MA 421-COMP
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA 220XX
UT WOS:000324621803342
ER

PT J
AU Slocik, JM
   Naik, RR
AF Slocik, Joseph M.
   Naik, Rajesh R.
TI Multivalent peptide-nanoparticle interactions for synthesis, assembly,
   and sensing
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
CT 244th National Fall Meeting of the American-Chemical-Society (ACS)
CY AUG 19-23, 2012
CL Philadelphia, PA
SP Amer Chem Soc, Div Hist Chem, Amer Chem Soc
C1 [Slocik, Joseph M.; Naik, Rajesh R.] Air Force Res Lab, Mat & Mfg Directorate, Wright Patterson AFB, OH 45403 USA.
EM joseph.slocik@wpafb.af.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 AUG 19
PY 2012
VL 244
MA 654-COLL
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA 220XX
UT WOS:000324621802823
ER

PT J
AU Swindeman, MJ
   Iarve, EV
   Brockman, RA
   Mollenhauer, DH
   Breitzman, TD
   Hallett, S
AF Swindeman, Michael J.
   Iarve, Endel V.
   Brockman, Robert A.
   Mollenhauer, David H.
   Breitzman, Timothy D.
   Hallett, Stephen
TI Strength prediction in open hole composite laminates by discrete damage
   modeling
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
CT 244th National Fall Meeting of the American-Chemical-Society (ACS)
CY AUG 19-23, 2012
CL Philadelphia, PA
SP Amer Chem Soc, Div Hist Chem, Amer Chem Soc
C1 [Swindeman, Michael J.; Iarve, Endel V.; Brockman, Robert A.] Univ Dayton, Res Inst, Dayton, OH 45469 USA.
   [Mollenhauer, David H.; Breitzman, Timothy D.] Air Force Res Lab, Wright Patterson AFB, OH 45433 USA.
   [Hallett, Stephen] Univ Bristol, Bristol BS8 1TR, Avon, England.
EM timothy.breitzman@wpafb.af.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 AUG 19
PY 2012
VL 244
MA 301-POLY
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA 220XX
UT WOS:000324621808460
ER

PT J
AU Wang, DH
   Tan, LS
AF Wang, David H.
   Tan, Loon-Seng
TI Beckmann rearrangement on the surface of multiwalled carbon nanotube
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
CT 244th National Fall Meeting of the American-Chemical-Society (ACS)
CY AUG 19-23, 2012
CL Philadelphia, PA
SP Amer Chem Soc, Div Hist Chem, Amer Chem Soc
C1 [Wang, David H.; Tan, Loon-Seng] US Air Force Res Lab, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA.
   [Wang, David H.] Universal Energy Syst Inc, Dayton, OH 45432 USA.
EM huabin.wang@wpafb.af.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 AUG 19
PY 2012
VL 244
MA 256-POLY
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA 220XX
UT WOS:000324621808420
ER

PT J
AU Wang, DH
   Lee, KM
   Koerner, H
   Vaia, RA
   White, TJ
   Tan, LS
AF Wang, David H.
   Lee, Kyung Min
   Koerner, Hilmar
   Vaia, Richard A.
   White, Timothy J.
   Tan, Loon-Seng
TI Structural and morphological factors in photomechanical enhancement of
   polyimides with main-chain azobenzene moieties
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
CT 244th National Fall Meeting of the American-Chemical-Society (ACS)
CY AUG 19-23, 2012
CL Philadelphia, PA
SP Amer Chem Soc, Div Hist Chem, Amer Chem Soc
C1 [Wang, David H.; Lee, Kyung Min; Koerner, Hilmar; Vaia, Richard A.; White, Timothy J.; Tan, Loon-Seng] Air Force Res Lab, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA.
   [Wang, David H.; Koerner, Hilmar] Universal Energy Syst Inc, Dayton, OH 45432 USA.
   [Lee, Kyung Min] Azimuth Corp, Dayton, OH 45432 USA.
EM huabin.wang@wpafb.af.mil
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 AUG 19
PY 2012
VL 244
MA 251-POLY
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA 220XX
UT WOS:000324621808415
ER

PT J
AU Xu, Y
   Zhu, XG
   Liu, G
   Williams, J
   Lee, HD
   Wielunski, L
   Gustafsson, T
   Lu, WJ
   Garfunkel, EL
   Feldman, LC
AF Xu, Yi
   Zhu, Xingguang
   Liu, Gang
   Williams, John
   Lee, Hang Dong
   Wielunski, Leszek
   Gustafsson, Torgny
   Lu, Weijie
   Garfunkel, Eric L.
   Feldman, Leonard C.
TI XPS study of nitrogen and phosphorus at the 4H-SiC/SiO2 interface
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
CT 244th National Fall Meeting of the American-Chemical-Society (ACS)
CY AUG 19-23, 2012
CL Philadelphia, PA
SP Amer Chem Soc, Div Hist Chem, Amer Chem Soc
C1 [Xu, Yi; Garfunkel, Eric L.] Rutgers State Univ, Dept Chem, Piscataway, NJ 08854 USA.
   [Xu, Yi; Zhu, Xingguang; Liu, Gang; Garfunkel, Eric L.; Feldman, Leonard C.] Rutgers State Univ, Inst Adv Mat Devices & Nanotechnol, Piscataway, NJ 08854 USA.
   [Lee, Hang Dong; Wielunski, Leszek; Gustafsson, Torgny] Rutgers State Univ, Dept Phys & Astron, Piscataway, NJ 08854 USA.
   [Zhu, Xingguang; Liu, Gang] Rutgers State Univ, Dept Elect Engn, Piscataway, NJ 08854 USA.
   [Williams, John] Auburn Univ, Dept Phys, Auburn, AL 36849 USA.
   [Lu, Weijie] Air Force Res Lab, Mat & Mfg Directorate, Wright Patterson AFB, OH 45431 USA.
   [Feldman, Leonard C.] Vanderbilt Univ, Dept Phys & Astron, Nashville, TN 37235 USA.
EM yixu@rci.rutgers.edu
RI Liu, Gang/B-1552-2015
OI Liu, Gang/0000-0002-7002-7351
NR 0
TC 0
Z9 0
U1 1
U2 5
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 AUG 19
PY 2012
VL 244
MA 350-INOR
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA 220XX
UT WOS:000324621805206
ER

PT J
AU Selesnick, RS
AF Selesnick, R. S.
TI Atmospheric scattering and decay of inner radiation belt electrons
SO JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
LA English
DT Article
ID DIFFUSION; MODEL
AB The dynamics of inner radiation belt electrons are governed by competing source, loss, and transport processes. However, during the recent extended solar minimum period the source was inactive and electron intensity was characterized by steady decay. This provided an opportunity to determine contributions to the decay rate of losses by precipitation into the atmosphere and of diffusive radial transport. To this end, a stochastic simulation of inner radiation belt electron transport is compared to data taken by the IDP instrument on the DEMETER satellite during 2009. For quasi-trapped, 200 keV electrons at L = 1.3, observed in the drift loss cone (DLC), results are consistent with electron precipitation losses by atmospheric scattering alone, provided account is taken of non-diffusive wide-angle scattering. Such scattering is included in the stochastic simulation using a Markov jump process. Diffusive small-angle atmospheric scattering, while causing most of the precipitation losses, is too slow relative to azimuthal drift to contribute significantly to DLC intensity. Similarly there is no contribution from scattering by VLF plasma waves. Energy loss, energy diffusion, and azimuthal drift are also included in the model. Even so, observed decay rates of stably-trapped electrons with L < 1.5 are slower than predicted by scattering losses alone, requiring radial diffusion with coefficient D-LL similar to 3 x 10(-10) s(-1) to replenish electrons lost to the atmosphere at low L values.
C1 USAF, Res Lab, Space Vehicles Directorate, Kirtland AFB, NM 87117 USA.
RP Selesnick, RS (reprint author), USAF, Res Lab, Space Vehicles Directorate, 3550 Aberdeen Ave, Kirtland AFB, NM 87117 USA.
EM richard.selesnick@kirtland.af.mil
NR 31
TC 15
Z9 15
U1 0
U2 1
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 AUG 17
PY 2012
VL 117
AR A08218
DI 10.1029/2012JA017793
PG 11
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 992CZ
UT WOS:000307754400003
ER

PT J
AU Park, JH
   Choudhury, A
   Farmer, BL
   Dang, TD
   Park, SY
AF Park, Jeong-Hyun
   Choudhury, Arup
   Farmer, B. L.
   Dang, T. D.
   Park, Soo-Young
TI Chemically modified graphene oxide/polybenzimidazobenzophenanthroline
   nanocomposites with improved electrical conductivity
SO POLYMER
LA English
DT Article
DE Nanocomposites; Graphene; Electrical conductivity
ID GRAPHITE OXIDE; LADDER POLYMER; THERMAL REDUCTION; RIGID-ROD;
   COMPOSITES; FILM; POLY(BENZIMIDAZOBENZOPHENANTHROLINE); NANOPLATELETS;
   CARBON; BBL
AB Graphene/polybenzimidazobenzophenanthroline nanocomposites were prepared through the liquid-phase exfoliation of graphene oxide (GO) and reduced graphene oxide (rGO) in methanesulfonic acid with subsequent solution mixing. Various chemical and combined chemical-thermal methods were examined to be effective for producing rGO with highly graphitic structure and excellent electrical conductivity. Raman and X-ray photoelectron spectroscopy showed higher degree of reduction of the GO with the combined chemical-thermal method compared to other chemical reduction processes. Structural characterization of the nanocomposites by X-ray diffraction, scanning electron microscopy and transmission electron microscopy showed good exfoliation and dispersion of both GO and rGO tillers in the polymer matrix. The thermogravimetric analysis found that the nanocomposites with rGO have higher onset and maximum weight loss temperatures than those with GO. Compared with the pure polymer, the electrical conductivity of the nanocomposites containing 10 wt% GO and GO reduced by the combined chemical-thermal treatment showed a remarkable increase by four and seven orders of magnitude, respectively. Long-term in-situ thermal reduction was performed to further improve the conductivities of the nanocomposites. (C) 2012 Elsevier Ltd. All rights reserved.
C1 [Park, Jeong-Hyun; Choudhury, Arup; Park, Soo-Young] Kyungpook Natl Univ, Dept Polymer Sci & Engn, Taegu 702701, South Korea.
   [Farmer, B. L.; Dang, T. D.] USAF, Res Lab, AFRL MLBP, Wright Patterson AFB, OH 45433 USA.
RP Park, SY (reprint author), Kyungpook Natl Univ, Dept Polymer Sci & Engn, 1370 Sankyuk Dong, Taegu 702701, South Korea.
EM psy@knu.ac.kr
FU National Research Foundation [NRF-2011-0020264]; Asian Office of
   Aerospace Research and Development through Air Force Research Laboratory
   [AOARD-10-4081]
FX This work was supported by the National Research Foundation of
   NRF-2011-0020264 and financial support from Asian Office of Aerospace
   Research and Development through Air Force Research Laboratory
   (AOARD-10-4081) is gratefully acknowledged.
NR 48
TC 10
Z9 11
U1 1
U2 51
PU ELSEVIER SCI LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
SN 0032-3861
J9 POLYMER
JI Polymer
PD AUG 17
PY 2012
VL 53
IS 18
BP 3937
EP 3945
DI 10.1016/j.polymer.2012.07.006
PG 9
WC Polymer Science
SC Polymer Science
GA 990EP
UT WOS:000307614100012
ER

PT J
AU Vella, JH
   Urbas, AM
AF Vella, Jarrett H.
   Urbas, Augustine M.
TI Nanoplasmonic Array Enhancement of Two-Photon Absorption in a Dye Film
SO JOURNAL OF PHYSICAL CHEMISTRY C
LA English
DT Article
ID FLUORESCENCE ENHANCEMENT; SURFACE-PLASMON; NANOSPHERE LITHOGRAPHY;
   NONLINEAR ABSORPTION; GOLD NANOPARTICLES; MOLECULES; NANORODS;
   NANOPRISMS; DEPENDENCE; METAL
AB We investigate the enhancement of the effective two-photon absorption cross section of a film of an organic dye by a plasmonic triangular prism array through finite element calculations and experimental measurements. Hexagonal arrays of plasmonic triangular prism arrays were prepared using nanosphere lithography so that their localized surface plasmon resonance (LSPR) is at 800 nm. A dye, AF455, with significant two-photon fluorescence when excited at 800 nm was spin-coated onto the plasmonic array. Several film thicknesses of AF455 were prepared, ranging from 40 to 184 nm. The dependence of the effective two-photon absorption cross section sigma((2)) of AF455 on the thickness of the dye layer was measured using a newly applied technique. Because two-photon fluorescence is only sensitive to light absorbed by the chromophore, absorption from the nanostructure, thermal effects, and other parasitic optical mechanisms that could indicate anomalously high sigma((2)) enhancement values are eliminated from the measured enhancement. The results quantitatively agreed with the sigma((2)) enhancement values predicted by finite element method (REM) calculations. The simulations show that the sigma((2)) enhancement observed was due to the plasmonic triangular prism arrays' LSPR and that the dependence of sigma((2)) of AF455 on the gold nanostructure is influenced by an optical reflection pattern generated by the plasmonic array in addition to the near-field enhancement. The combination of theory and experiments validates the application of the technique to sigma((2)) enhancement measurements.
C1 [Vella, Jarrett H.; Urbas, Augustine M.] USAF, Res Lab, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA.
   [Vella, Jarrett H.] Gen Dynam Informat Technol, Fairfax, VA 22030 USA.
RP Urbas, AM (reprint author), USAF, Res Lab, Mat & Mfg Directorate, 3005 Hobson Way, Wright Patterson AFB, OH 45433 USA.
EM augustine.urbas@wpafb.af.mil
NR 34
TC 9
Z9 9
U1 3
U2 33
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1932-7447
J9 J PHYS CHEM C
JI J. Phys. Chem. C
PD AUG 16
PY 2012
VL 116
IS 32
BP 17169
EP 17173
DI 10.1021/jp302517b
PG 5
WC Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science,
   Multidisciplinary
SC Chemistry; Science & Technology - Other Topics; Materials Science
GA 988MH
UT WOS:000307494600045
ER

PT J
AU Deisseroth, K
   Hart, RA
AF Deisseroth, Kate
   Hart, Robert A.
TI Symptoms of Post-traumatic Stress Following Elective Lumbar Spinal
   Arthrodesis
SO SPINE
LA English
DT Article
DE lumbar spine; fusion; scoliosis; surgery; complications; outcomes
ID NATIONAL-COMORBIDITY-SURVEY; TRANSPLANT RECIPIENTS;
   HEART-TRANSPLANTATION; ORTHOPEDIC TRAUMA; GENERAL HEALTH; PSYCHOMETRIC
   PROPERTIES; CANCER SURVIVORS; PTSD CHECKLIST; BREAST-CANCER; DISORDER
AB Study Design. A prospective cohort study with 100% follow-up.
   Objective. To assess incidence and risk factors for development of post-traumatic stress disorder (PTSD) symptoms after elective lumbar arthrodesis.
   Summary of Background Data. Invasive medical care results in substantial physical and psychological stress to patients. The reported incidence of PTSD after medical care delivery in patients treated for trauma, cancer, and organ transplantation ranges from 5% to 51%. Similar data after elective lumbar spinal arthrodesis have not been reported.
   Methods. A consecutive series of 73 elective lumbar spine arthrodesis patients were evaluated prospectively, using the PTSD Checklist-Civilian Version at 6 weeks, 3 months, 6 months, 9 months, and 12 months after surgery. Patient's sex, age, education level, job status, marital status, psychiatric history, prior surgery with general anesthetic, surgical approach, blood loss, postoperative intubation, length of intensive care unit and hospital stay, and occurrence of perioperative complications were analyzed as predictors of PTSD symptoms, using chi(2) analyses.
   Results. The overall incidence of symptoms of PTSD identified at at least 1 time point was 19.2% (14 of 73). At each time point, the percentage of the population that was positive was 7.5% (6 wk), 11.6% (3 mo), 7.8%, (6 mo), 13.6% (9 mo), and 11.0% (12 mo). The presence of a prior psychiatric diagnosis proved to be the strongest predictor of postarthrodesis symptoms of PTSD (odds ratio [OR] = 7.05, P = 0.002). Occurrence of a complication also proved to be significantly correlated with the development of PTSD symptoms (OR = 4.33, P = 0.04). Age less than 50 years, blood loss of more than 1 L, hospital stay of more than 10 days, and diagnosis trended toward but failed to reach statistical significance. None of the remaining variables approached statistical significance.
   Conclusion. Positive PTSD symptoms occurred at least once in 19.2% of patients after elective lumbar arthrodesis, with 7.5% to 13.6% of patients experiencing these symptoms at any 1 time point postoperatively. In this patient cohort, preoperative psychiatric diagnosis was the strongest predictor among tested variables of occurrence of PTSD symptoms, although occurrence of a perioperative complication was also significantly correlated with PTSD symptoms. Spine surgeons should be aware of the potential impact of lumbar arthrodesis surgery on patients' psychological state. Further investigation focusing on the impact of PTSD symptoms on clinical outcomes as well as on potential means of reducing the postoperative incidence of this disorder seems warranted.
C1 [Deisseroth, Kate; Hart, Robert A.] Malcom Grow Med Clin, Andrews Afb, MD USA.
RP Hart, RA (reprint author), Oregon Hlth & Sci Univ, Sam Jackson Hall,Ste 2360,3181 SW Sam Jackson Pk, Portland, OR 97239 USA.
EM hartro@ohsu.edu
NR 40
TC 5
Z9 5
U1 5
U2 8
PU LIPPINCOTT WILLIAMS & WILKINS
PI PHILADELPHIA
PA 530 WALNUT ST, PHILADELPHIA, PA 19106-3621 USA
SN 0362-2436
J9 SPINE
JI SPINE
PD AUG 15
PY 2012
VL 37
IS 18
BP 1628
EP 1633
DI 10.1097/BRS.0b013e318255e214
PG 6
WC Clinical Neurology; Orthopedics
SC Neurosciences & Neurology; Orthopedics
GA 992OJ
UT WOS:000307787300023
PM 22460923
ER

PT J
AU Panasyuk, GY
   Levin, GA
   Yerkes, KL
AF Panasyuk, George Y.
   Levin, George A.
   Yerkes, Kirk L.
TI Heat exchange mediated by a quantum system
SO PHYSICAL REVIEW E
LA English
DT Article
ID SELF-CONSISTENT RESERVOIRS; THERMAL-CONDUCTIVITY; LANGEVIN EQUATION;
   BROWNIAN-MOTION; MOLECULAR WIRES; HARMONIC CHAIN; FOURIERS LAW;
   TRANSPORT; MECHANICS; CRYSTAL
AB We consider heat transfer between two thermal reservoirs mediated by a quantum system using the generalized quantum Langevin equation. The thermal reservoirs are treated as ensembles of oscillators within the framework of the Drude-Ullersma model. General expressions for the heat current and thermal conductance are obtained for arbitrary coupling strength between the reservoirs and the mediator and for different temperature regimes. As an application of these results we discuss the origin of Fourier's law in a chain of large but finite subsystems coupled to each other by the quantum mediators. We also address a question of anomalously large heat current between the scanning tunneling microscope (STM) tip and substrate found in a recent experiment. The question of minimum thermal conductivity is revisited in the framework of scaling theory as a potential application of the developed approach.
C1 [Panasyuk, George Y.; Levin, George A.; Yerkes, Kirk L.] USAF, Aerosp Syst Directorate, Res Lab, Wright Patterson AFB, OH 45433 USA.
RP Panasyuk, GY (reprint author), USAF, Aerosp Syst Directorate, Res Lab, Wright Patterson AFB, OH 45433 USA.
EM George.Panasyuk.ctr@wpafb.af.mil
RI Panasyuk, George/C-7649-2015
OI Panasyuk, George/0000-0002-4873-990X
FU Air Force Office of Scientific Research; National Research Council
   Senior Associateship Award at the Air Force Research Laboratory
FX The authors wish to acknowledge support from the Air Force Office of
   Scientific Research. One of the authors (G.Y.P.) is supported by the
   National Research Council Senior Associateship Award at the Air Force
   Research Laboratory.
NR 56
TC 14
Z9 14
U1 1
U2 15
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 AUG 15
PY 2012
VL 86
IS 2
AR 021116
DI 10.1103/PhysRevE.86.021116
PN 1
PG 15
WC Physics, Fluids & Plasmas; Physics, Mathematical
SC Physics
GA 988QZ
UT WOS:000307506900005
PM 23005731
ER

PT J
AU Irvin, DJ
   Stenger-Smith, JD
   Yandek, GR
   Carberry, JR
   Currie, DA
   Theodoropoulou, N
   Irvin, JA
AF Irvin, David J.
   Stenger-Smith, John D.
   Yandek, Gregory R.
   Carberry, Jamie R.
   Currie, Daniel A.
   Theodoropoulou, Nikoleta
   Irvin, Jennifer A.
TI Enhanced electrochemical response of solution-deposited n-doping polymer
   via cocasting with ionic liquid
SO JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS
LA English
DT Article
DE co-casting; electroactive polymer; conducting polymers;
   electrochemistry; morphology; ion mobility; ionic liquid; n-doping
ID QUARTZ-CRYSTAL MICROBALANCE; LADDER POLYMERS; CONDUCTING POLYMERS;
   FILMS; TRANSPORT; REDOX; STATE; BBL
AB A novel cocasting approach is presented for improving electroactivity of solution-cast films of conducting polymers. Solutions of the n-doping polymer poly(benzimidazobenzophenanthroline) (BBL) were co-deposited with the ionic liquid electrolyte 1-ethyl-3-methyl-imidazolium bis(trifluoromethylsulfonyl)imide (EMIBTI). The resultant co-continuous mixture yielded highly porous polymer films (CC-BBL) upon removal of solvent and EMIBTI. Electrochemical quartz crystal microgravimetry revealed that the n-doping process in neat ionic liquid is anion-dominant, which is contrary to what is observed in dilute electrolyte solutions. The CC-BBL films exhibit a thirty-fold increase in initial current response and capacity relative to non-cocast BBL films. While current response and capacity of the non-cocast BBL improve with cycling, they level out after 800 cycles at 35% of those of the CC-BBL. CC-BBL shows high n-doping stability; no decrease in electroactivity is seen after 1000 cycles. (c) 2012 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys, 2012
C1 [Carberry, Jamie R.; Currie, Daniel A.; Theodoropoulou, Nikoleta; Irvin, Jennifer A.] SW Texas State Univ, Coll Sci, San Marcos, TX 78666 USA.
   [Irvin, David J.] Syst & Mat Res Corp, Austin, TX 78756 USA.
   [Stenger-Smith, John D.] USN, Res Dept, Air Warfare Ctr, Weap Div, China Lake, CA 93555 USA.
   [Yandek, Gregory R.] USAF, Prop Mat Applicat Branch, Res Lab, Prop Directorate Edwards AFB, Edwards AFB, CA 93524 USA.
RP Irvin, JA (reprint author), SW Texas State Univ, Coll Sci, 601 Univ Dr, San Marcos, TX 78666 USA.
EM jennifer.irvin@txstate.edu
RI Irvin, Jennifer/C-7968-2013
OI Irvin, Jennifer/0000-0003-3500-8419
FU Office of Naval Research; ACS PRF [50120-UNI10]
FX The authors thank the Office of Naval Research (Drs. M. Anderson and P.
   Armistead) and ACS PRF (grant #50120-UNI10) for the financial support of
   this project. (Supporting Information is available online from Wiley
   InterScience or from the author). Helpful suggestions from the reviewers
   are also appreciated.
NR 40
TC 5
Z9 5
U1 1
U2 27
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 0887-6266
J9 J POLYM SCI POL PHYS
JI J. Polym. Sci. Pt. B-Polym. Phys.
PD AUG 15
PY 2012
VL 50
IS 16
BP 1145
EP 1150
DI 10.1002/polb.23111
PG 6
WC Polymer Science
SC Polymer Science
GA 969TV
UT WOS:000306082700001
ER

PT J
AU Lynch, C
   Bliss, DF
   Snure, M
   Tassev, V
   Bryant, G
   Yapp, C
   Fenner, DB
   Allen, MG
   Termkoa, K
   Li, J
   Vangala, S
   Goodhue, W
AF Lynch, C.
   Bliss, D. F.
   Snure, M.
   Tassev, V.
   Bryant, G.
   Yapp, C.
   Fenner, D. B.
   Allen, M. G.
   Termkoa, K.
   Li, J.
   Vangala, S.
   Goodhue, W.
TI Thick orientation-patterned GaAs grown by low-pressure HVPE on
   fusion-bonded templates
SO JOURNAL OF CRYSTAL GROWTH
LA English
DT Article
DE Hydride vapor phase epitaxy; GaAs; Nonlinear optic materials
ID MATCHED 2ND-HARMONIC GENERATION; SUBLATTICE REVERSAL; PHASE; CO2-LASER;
   EPITAXY; FABRICATION; CONVERSION; FILMS
AB Quasi-phase-matched GaAs layers up to 600 mu m thick have been produced by low-pressure hydride vapor phase epitaxy (HVPE) regrowth on templates fabricated using wafer fusion bonding. We have used this combination of techniques to demonstrate an alternative approach for commercial development of orientation-patterned GaAs (OP-GaAs) for nonlinear optical frequency conversion applications. We report on the characterization of this material and present a comparison with OP-GaAs grown using the conventional all-epitaxial templates. The primary advantages of the wafer fusion method are the avoidance of the molecular beam epitaxy growth of GaAs/Ge/GaAs and the ability to use substrates without misorientation. We have observed that some of the misorientation-related growth defects which affect conventional OP-GaAs growth are not as problematic for regrowth on wafer fusion bonded templates. The overall quality of antiphase domain propagation was similar to conventional OP-GaAs layers. A disadvantage was that growth rates were approximately half the values measured for regrowth on misoriented templates. Published by Elsevier B.V.
C1 [Lynch, C.; Bliss, D. F.; Snure, M.; Tassev, V.; Bryant, G.] USAF, Res Lab, Hanscom AFB, MA 01731 USA.
   [Yapp, C.] Solid State Sci Corp, Hollis, NH 03049 USA.
   [Fenner, D. B.; Allen, M. G.] Phys Sci Inc, Andover, MA 01810 USA.
   [Termkoa, K.; Li, J.; Vangala, S.; Goodhue, W.] Univ Massachusetts, Photon Ctr, Lowell, MA 01854 USA.
RP Lynch, C (reprint author), Inrad Opt, 181 Legrand Ave, Northvale, NJ 07646 USA.
EM clynch@inradoptics.com
FU US Air Force [FA9550-06-C-0053, FA9550-08-C-0026]; US Department of
   Energy [DE-FG02-08ER85208]
FX The authors thank M. Garcia for assistance with characterization of the
   GaAs surface. PSI has benefited from the assistance of D.J. Bamford and
   P.F. Moulton with the QPM optical design. Financial support was provided
   in part through US Air Force contracts # FA9550-06-C-0053, #
   FA9550-08-C-0026, and US Department of Energy grant # DE-FG02-08ER85208.
NR 27
TC 6
Z9 6
U1 2
U2 10
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 AUG 15
PY 2012
VL 353
IS 1
BP 152
EP 157
DI 10.1016/j.jcrysgro.2012.05.025
PG 6
WC Crystallography; Materials Science, Multidisciplinary; Physics, Applied
SC Crystallography; Materials Science; Physics
GA 970EA
UT WOS:000306109700029
ER

PT J
AU Harmon, DF
   Reynolds, MB
   Graham, SR
   Hopkinson, KM
AF Harmon, D. F.
   Reynolds, M. B.
   Graham, S. R.
   Hopkinson, K. M.
TI Integrating disruption-prone links into reliable networks: a
   transmission control protocol friendly approach
SO IET COMMUNICATIONS
LA English
DT Article
ID AD HOC NETWORKS; DELAY-TOLERANT NETWORK; TCP PERFORMANCE
AB Although progress has been made to satisfy mobility at the network's edge, much work remains for deeper mobility requirements. In many emergency or military applications, fixed network infrastructure may not be available or even possible. As mobile military data requirements grow, and spectrum limitations increase, systems must better utilise the diminishing available bandwidth of wireless radio frequency and free space optical links. To achieve better utilisation, disruption-prone networks require disruption-tolerant protocols or localised buffering to mask disruptions. Transmission control protocol (TCP)/IP assumes reliable links and performs well in networks with congestion dominated packet losses, but poorly with link failure dominated packet losses. Although TCP might be altered for disruptive environments, evolutionary reasons make it difficult to do so well without partitioning networks into reliable and disruption-tolerant systems. Instead, the authors examine transport layer aware helper protocols, with intermediate buffering in routers, to assist TCP across disruption-prone network portions. The buffering does not require TCP modifications at communicating nodes and integrate well with existing routers (i.e. TCP friendly). Experimental results show that TCP can reliably establish and maintain connections under poor link availability using the buffering protocol. Few TCP connections complete without it.
C1 [Harmon, D. F.; Graham, S. R.; Hopkinson, K. M.] USAF, Inst Technol, Dept Elect & Comp Engn, Wright Patterson AFB, OH 45433 USA.
   [Reynolds, M. B.] USN, Ctr Surface Warfare, Crane Div, Crane, IN 47522 USA.
RP Harmon, DF (reprint author), USAF, Inst Technol, Dept Elect & Comp Engn, Wright Patterson AFB, OH 45433 USA.
EM duane.harmon@us.af.mil; michael.reynolds@navy.mil;
   dr.scott.graham@gmail.com; kenneth.hopkinson@afit.edu
OI Graham, Scott/0000-0003-0193-1192
FU U.S. Air Force Office of Scientific Research
FX This work was supported in part by the U.S. Air Force Office of
   Scientific Research.
NR 28
TC 1
Z9 1
U1 0
U2 3
PU INST ENGINEERING TECHNOLOGY-IET
PI HERTFORD
PA MICHAEL FARADAY HOUSE SIX HILLS WAY STEVENAGE, HERTFORD SG1 2AY, ENGLAND
SN 1751-8628
EI 1751-8636
J9 IET COMMUN
JI IET Commun.
PD AUG 14
PY 2012
VL 6
IS 12
BP 1702
EP 1709
DI 10.1049/iet-com.2011.0504
PG 8
WC Engineering, Electrical & Electronic
SC Engineering
GA 027OJ
UT WOS:000310362100014
ER

PT J
AU Chatterjee, S
   Kim, MJ
   Zakharov, DN
   Kim, SM
   Stach, EA
   Maruyama, B
   Sneddon, LG
AF Chatterjee, Shahana
   Kim, Myung Jong
   Zakharov, Dmitri N.
   Kim, Seung Min
   Stach, Eric A.
   Maruyama, Benji
   Sneddon, Larry G.
TI Syntheses of Boron Nitride Nanotubes from Borazine and Decaborane
   Molecular Precursors by Catalytic Chemical Vapor Deposition with a
   Floating Nickel Catalyst
SO CHEMISTRY OF MATERIALS
LA English
DT Article
DE boron nitride nanotubes; chemical vapor deposition; nickel; borazine;
   decaborane; floating catalyst
ID BISCYCLOPENTADIENYL METAL COMPOUNDS; CERAMIC CONVERSION REACTIONS;
   JUNCTION CARBON NANOTUBES; YIELD POLYMERIC PRECURSOR; SINGLE-WALLED
   NANOTUBES; LOW-TEMPERATURE GROWTH; ATOMIC STRUCTURES; BN NANOTUBES;
   ARC-DISCHARGE; LARGE-SCALE
AB Multi- and double-walled boron nitride nanotubes (BNNTs) have been synthesized with the aid of a floating nickel catalyst via the catalytic chemical vapor deposition (CCVD) of either the amine-borane borazine (B3N3H6) or the polyhedral-borane decaborane (B10H14) molecular precursors in ammonia atmospheres. Both sets of BNNTs were crystalline with highly ordered structures. The BNNTs grown at 1200 degrees C from borazine were mainly double-walled, with lengths up to 0.2 mu m and similar to 2 nm diameters. The BNNTs grown at 1200-1300 degrees C from decaborane were double- and multiwalled, with the double-walled nanotubes having similar to 2 nm inner diameters and the multiwalled nanotubes (similar to 10 walls) having similar to 4-5 nm inner diameters and similar to 12-14 nm outer diameters. BNNTs grown from decaborane at 1300 degrees C were longer, averaging similar to 0.6 mu m, whereas those grown at 1200 degrees C had average lengths of similar to 0.2 mu m. The BNNTs were characterized using scanning and transmission electron microscopies (SEM and TEM), and electron energy loss spectroscopy (EELS). The floating catalyst method provides a catalytic and potentially scalable route to BNNTs with low defect density from safe and commercially available precursor compounds.
C1 [Kim, Myung Jong; Maruyama, Benji] USAF, Res Lab, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA.
   [Chatterjee, Shahana; Kim, Myung Jong; Sneddon, Larry G.] Univ Penn, Dept Chem, Philadelphia, PA 19104 USA.
   [Kim, Myung Jong] Korea Inst Sci & Technol, Inst Adv Composite Mat, Wanju Gun, Jeollabuk Do, South Korea.
   [Zakharov, Dmitri N.; Kim, Seung Min; Stach, Eric A.] Purdue Univ, Sch Mat Engn, W Lafayette, IN 47907 USA.
   [Zakharov, Dmitri N.; Kim, Seung Min; Stach, Eric A.] Purdue Univ, Birck Nanotechnol Ctr, W Lafayette, IN 47907 USA.
RP Maruyama, B (reprint author), USAF, Res Lab, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA.
EM Benji.Maruyama@wpafb.af.mil; lsneddon@sas.upenn.edu
RI Stach, Eric/D-8545-2011; Zakharov, Dmitri/F-4493-2014
OI Stach, Eric/0000-0002-3366-2153; 
FU National Science Foundation; Air Force Office of Scientific Research
   through the UTC contract [CR&D F33615-03-D-5801]
FX The National Science Foundation and the Air Force Office of Scientific
   Research through the UTC contract (Collaborative Research and
   Development (CR&D F33615-03-D-5801)) are gratefully acknowledged for the
   support of this research.
NR 119
TC 16
Z9 16
U1 0
U2 57
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0897-4756
J9 CHEM MATER
JI Chem. Mat.
PD AUG 14
PY 2012
VL 24
IS 15
BP 2872
EP 2879
DI 10.1021/cm3006088
PG 8
WC Chemistry, Physical; Materials Science, Multidisciplinary
SC Chemistry; Materials Science
GA 988GW
UT WOS:000307478400005
ER

PT J
AU Smith, ML
   Heitfeld, K
   Slone, C
   Vaia, RA
AF Smith, Matthew L.
   Heitfeld, Kevin
   Slone, Connor
   Vaia, Richard A.
TI Autonomic Hydrogels through Postfunctionalization of Gelatin
SO CHEMISTRY OF MATERIALS
LA English
DT Article
DE oscillating reaction; gels; bioconjugate techniques; ruthenium; polymer
ID BELOUSOV-ZHABOTINSKY REACTION; GLUTARALDEHYDE CROSS-LINKING;
   SELF-OSCILLATING POLYMER; WAVE-PROPAGATION; FORCE MICROSCOPY;
   AMINO-ACIDS; GELS; SIZE; SYNCHRONIZATION; PROTEINS
AB Autonomic systems in biology, such as the circulatory system, function independently without an external stimulus. Materials that mimic this behavior hold promise for energy and medical technologies in the form of sensors, energy conversion units, and versatile micrometer scale machinery. Self-oscillating hydrogels driven by the Belousov-Zhabotinsky (BZ) reaction are one class of autonomic materials that convert chemical energy to mechanical swell-deswell motion. Effective feedback control techniques, as well as materials and processing options, are key challenges in making these materials technologically relevant. To address these challenges we have expanded BZ hydrogel materials options, by utilizing a flexible water-based succinimide amine coupling reaction for functionalizing bio- and synthetic polymers containing primary amines for use in BZ devices. Herein we characterize the chemomechanical behavior of homogeneous BZ gelatin gels and determine the range of periods and strains attainable. We highlight the two most distinctive, and technologically relevant, features of BZ-gelatin, specifically, its ability to be postfunctionalized with Ru(sbpy) after gel formation and its ability to be patterned into compositionally heterogeneous composites via physical solidification through the thermal reversibility of its melt-gel transition.
C1 [Smith, Matthew L.; Heitfeld, Kevin; Slone, Connor; Vaia, Richard A.] USAF, Res Lab, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA.
RP Vaia, RA (reprint author), USAF, Res Lab, Mat & Mfg Directorate, 2941 Hobson Way, Wright Patterson AFB, OH 45433 USA.
EM richard.vaia@wpafb.af.mil
FU National Research Council; Air Force Office of Scientific Research
FX This research was performed while MLS held a National Research Council
   Research Associateship Award at the Air Force Research Laboratory. The
   authors gratefully acknowledge partial funding from the Air Force Office
   of Scientific Research, and valuable discussions with Laura Fabris,
   Robert Wadam, and Loon-Seng Tan.
NR 48
TC 17
Z9 17
U1 2
U2 35
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0897-4756
EI 1520-5002
J9 CHEM MATER
JI Chem. Mat.
PD AUG 14
PY 2012
VL 24
IS 15
BP 3074
EP 3080
DI 10.1021/cm301634a
PG 7
WC Chemistry, Physical; Materials Science, Multidisciplinary
SC Chemistry; Materials Science
GA 988GW
UT WOS:000307478400027
ER

PT J
AU Rui, GH
   Nelson, RL
   Zhan, QW
AF Rui, Guanghao
   Nelson, Robert L.
   Zhan, Qiwen
TI Beaming photons with spin and orbital angular momentum via a
   dipole-coupled plasmonic spiral antenna
SO OPTICS EXPRESS
LA English
DT Article
ID CIRCULAR-POLARIZATION ANALYZER; LIGHT; LENS
AB We analytically and numerically study the emission properties of an electric dipole coupled to a plasmonic spiral structure with different pitch. As a transmitting antenna, the spiral structure couples the radiation from the electric dipole into circularly polarized emitted photons in the far field. The spin carried by the emitted photons is determined by the handedness of the spiral antenna. By increasing the spiral pitch in the unit of surface plasmon wavelength, these circularly polarized photons also gain orbital angular momentum with different topological charges. This phenomenon is attributed to the presence of a geometric phase arising from the interaction of light from point source with the anisotropic spiral structure. The circularly polarized vortex emission from such optically coupled spiral antenna also has high directivity, which may find important applications in quantum optical information, single molecule sensing, and integrated photonic circuits. (C) 2012 Optical Society of America
C1 [Rui, Guanghao; Zhan, Qiwen] Univ Dayton, Electroopt Grad Program, Dayton, OH 45469 USA.
   [Rui, Guanghao] Univ Sci & Technol China, Dept Opt & Opt Engn, Hefei 230026, Anhui, Peoples R China.
   [Nelson, Robert L.] USAF, Res Lab, Dayton, OH 45433 USA.
RP Rui, GH (reprint author), Univ Dayton, Electroopt Grad Program, 300 Coll Pk, Dayton, OH 45469 USA.
EM qzhan1@udayton.edu
FU National Basic Research Program of China [2011CB301802]; Air Force
   Research Laboratory's (Materials and Manufacturing Directorate)
   Metamaterials Program
FX G. Rui acknowledges the support by the National Basic Research Program
   of China under Grant No. 2011CB301802. R. Nelson and Q. Zhan acknowledge
   the support of the Air Force Research Laboratory's (Materials and
   Manufacturing Directorate) Metamaterials Program.
NR 17
TC 11
Z9 11
U1 2
U2 49
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 AUG 13
PY 2012
VL 20
IS 17
BP 18819
EP 18826
DI 10.1364/OE.20.018819
PG 8
WC Optics
SC Optics
GA 993QC
UT WOS:000307873600031
PM 23038521
ER

PT J
AU Rui, GH
   Chen, WB
   Abeysinghe, DC
   Nelson, RL
   Zhan, QW
AF Rui, Guanghao
   Chen, Weibin
   Abeysinghe, Don C.
   Nelson, Robert L.
   Zhan, Qiwen
TI Beaming circularly polarized photons from quantum dots coupled with
   plasmonic spiral antenna
SO OPTICS EXPRESS
LA English
DT Article
ID UNIDIRECTIONAL EMISSION; NANOSTRUCTURES; FLUORESCENCE; LIGHT
AB Coupling nanoscale emitters via optical antennas enables comprehensive control of photon emission in terms of intensity, directivity and polarization. In this work we report highly directional emission of circularly polarized photons from quantum dots coupled to a spiral optical antenna. The structural chirality of the spiral antenna imprints spin state to the emitted photons. Experimental results reveal that a circular polarization extinction ratio of 10 is obtainable. Furthermore, increasing the number of turns of the spiral gives rise to higher antenna gain and directivity, leading to higher field intensity and narrower angular width of emission pattern in the far field. For a five-turn Archimedes' spiral antenna, field intensity increase up to 70-fold simultaneously with antenna directivity of 11.7 dB has been measured in the experiment. The highly directional circularly polarized photon emission from such optically coupled spiral antenna may find important applications in single molecule sensing, quantum optics information processing and integrated photonic circuits as a nanoscale spin photon source. (C) 2012 Optical Society of America
C1 [Rui, Guanghao; Chen, Weibin; Zhan, Qiwen] Univ Dayton, Electroopt Program, Dayton, OH 45469 USA.
   [Rui, Guanghao] Univ Sci & Technol China, Dept Opt & Opt Engn, Hefei 230026, Anhui, Peoples R China.
   [Abeysinghe, Don C.] Univ Cincinnati, Dept Elect & Comp Engn, Cincinnati, OH 45219 USA.
   [Nelson, Robert L.] USAF, Res Lab, Dayton, OH 45433 USA.
RP Rui, GH (reprint author), Univ Dayton, Electroopt Program, 300 Coll Pk, Dayton, OH 45469 USA.
EM ghrui@mail.ustc.edu.cn; qzhan1@udayton.edu
FU National Basic Research Program of China [2011CB301802]; US Air Force
   Research Laboratory's (Materials and Manufacturing Directorate)
   Metamaterials Program
FX G. Rui is supported by the National Basic Research Program of China
   (Grant No. 2011CB301802). W. Chen, D. Abeysinghe, R. Nelson and Q. Zhan
   acknowledge the support of the US Air Force Research Laboratory's
   (Materials and Manufacturing Directorate) Metamaterials Program.
NR 18
TC 17
Z9 17
U1 2
U2 39
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 AUG 13
PY 2012
VL 20
IS 17
BP 19297
EP 19304
DI 10.1364/OE.20.019297
PG 8
WC Optics
SC Optics
GA 993QC
UT WOS:000307873600081
PM 23038571
ER

PT J
AU Putnam, SA
   Byrd, LW
   Briones, AM
   Hanchak, MS
   Ervin, JS
   Jones, JG
AF Putnam, Shawn A.
   Byrd, Larry W.
   Briones, Alejandro M.
   Hanchak, Michael S.
   Ervin, Jamie S.
   Jones, John G.
TI Role of entrapped vapor bubbles during microdroplet evaporation
SO APPLIED PHYSICS LETTERS
LA English
DT Article
AB On superheated surfaces, the air bubble trapped during impingement grows into a larger vapor bubble and oscillates at the frequency predicted for thermally induced capillary waves. In some cases, the entrapped vapor bubble penetrates the droplet interface, leaving a micron-sized coffee-ring pattern of pure fluid. Vapor bubble entrapment, however, does not influence the evaporation rate. This is also true on laser heated surfaces, where a laser can thermally excite capillary waves and induce bubble oscillations over a broad range of frequencies, suggesting that exciting perturbations in a pinned droplets interface is not an effective avenue for enhancing evaporative heat transfer. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4745009]
C1 [Putnam, Shawn A.; Jones, John G.] USAF, Res Lab, Mat & Mfg Directorate, Thermal Sci & Mat Branch, Wright Patterson AFB, OH 45433 USA.
   [Putnam, Shawn A.] Universal Technol Corp, Dayton, OH 45432 USA.
   [Byrd, Larry W.; Briones, Alejandro M.; Hanchak, Michael S.; Ervin, Jamie S.] USAF, Res Lab, Prop Directorate, Thermal & Electrochem Branch, Wright Patterson AFB, OH 45433 USA.
   [Briones, Alejandro M.; Hanchak, Michael S.; Ervin, Jamie S.] Univ Dayton, Res Inst, Energy & Environm Engn Div, Dayton, OH 45410 USA.
RP Putnam, SA (reprint author), USAF, Res Lab, Mat & Mfg Directorate, Thermal Sci & Mat Branch, Wright Patterson AFB, OH 45433 USA.
EM shawn.a.putnam@gmail.com
FU U.S. Air Force Office of Scientific Research [2303BR5P]
FX This material is based on research sponsored by U.S. Air Force Office of
   Scientific Research under Grant No. 2303BR5P. The authors are thankful
   to A. Safriet, C. Murtatore, and J. Ferguson for their technical input.
   The views and conclusions contained herein are those of the authors and
   should not be interpreted as necessarily representing the official
   policies or endorsements, either expressed or implied, of U.S. Air Force
   Office of Scientific Research or the U.S. Government.
NR 12
TC 2
Z9 2
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 AUG 13
PY 2012
VL 101
IS 7
AR 071602
DI 10.1063/1.4745009
PG 4
WC Physics, Applied
SC Physics
GA 998TK
UT WOS:000308263100019
ER

PT J
AU Yue, O
   Bremer, MT
   Pestov, D
   Gord, JR
   Roy, S
   Dantus, M
AF Yue, Orin
   Bremer, Marshall T.
   Pestov, Dmitry
   Gord, James R.
   Roy, Sukesh
   Dantus, Marcos
TI Single-Shot Gas-Phase Thermometry by Time-to-Frequency Mapping of
   Coherence Dephasing
SO JOURNAL OF PHYSICAL CHEMISTRY A
LA English
DT Article
ID STOKES-RAMAN-SCATTERING; MULTIPHOTON INTRAPULSE INTERFERENCE;
   FEMTOSECOND CARS; SPECTROSCOPY; COMPENSATION
AB We demonstrate a single-beam coherent anti-Stokes Raman scattering (CARS) technique for gas-phase thermometry that assesses the species-specific local gas temperature by single-shot time-to-frequency mapping of Raman-coherence dephasing. The proof-of-principle experiments are performed with air in a temperature-controlled gas cell. Impulsive excitation of molecular vibrations by an ultrashort pump/Stokes pulse is followed by multipulse probing of the 2330 cm(-1) Raman transition of N-2. This sequence of colored probe pulses, delayed in time with respect to each other and corresponding to three isolated spectral bands, imprints the coherence dephasing onto the measured CARS spectrum. For calibration purposes, the dephasing rates are recorded at various gas temperatures, and the relationship is fitted to a linear regression. The calibration data are then used to determine the gas temperature and are shown to provide better than 15 K accuracy. The described approach is insensitive to pulse energy fluctuations and can, in principle, gauge the temperature of multiple chemical species in a single laser shot, which is deemed particularly valuable for temperature profiling of reacting flows in gas-turbine combustors.
C1 [Yue, Orin; Bremer, Marshall T.; Dantus, Marcos] Michigan State Univ, Dept Chem, E Lansing, MI 48823 USA.
   [Pestov, Dmitry; Dantus, Marcos] Biophoton Solut Inc, E Lansing, MI 48823 USA.
   [Gord, James R.] USAF, Prop Directorate, Res Lab, Wright Patterson AFB, OH 45433 USA.
   [Roy, Sukesh] Spectral Energies LLC, Dayton, OH 45431 USA.
RP Yue, O (reprint author), Michigan State Univ, Dept Chem, E Lansing, MI 48823 USA.
EM dantus@chemistry.msu.edu
FU Air Force Research Laboratory [FA8650-10-C-2008]; Air Force Office of
   Scientific Research
FX Funding for this research was provided by the Air Force Research
   Laboratory under Contract No. FA8650-10-C-2008 and by the Air Force
   Office of Scientific Research (Dr. Enrique Parra, Program Manager).
NR 18
TC 1
Z9 1
U1 1
U2 25
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 AUG 9
PY 2012
VL 116
IS 31
BP 8138
EP 8141
DI 10.1021/jp3010103
PG 4
WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical
SC Chemistry; Physics
GA 985KU
UT WOS:000307264300004
PM 22747235
ER

PT J
AU Yandek, GR
   Moore, BM
   Ramirez, SM
   Mabry, JM
AF Yandek, Gregory R.
   Moore, Brian M.
   Ramirez, Sean M.
   Mabry, Joseph M.
TI Effects of Peripheral Architecture on the Properties of Aryl Polyhedral
   Oligomeric Silsesquioxanes
SO JOURNAL OF PHYSICAL CHEMISTRY C
LA English
DT Article
ID CRYSTALLIZATION BEHAVIOR; THERMAL-DEGRADATION; POSS; NANOCOMPOSITES;
   MISCIBILITY
AB The effects of the peripheral architecture on the macroscopic properties of eight symmetric and asymmetric aryl polyhedral oligomeric silsesquioxane (POSS) molecules are described. These POSS materials were synthesized in our laboratory and characterized by single-crystal and powder Xray diffraction techniques, as well as differential scanning calorimetry, thermogravimetric analysis, mass spectrometry, and Fourier transform infrared spectroscopy. The peripheral aryl architecture, although similar in most cases, was found to significantly influence observed thermally induced phase transitions, mass loss during decomposition, and heat capacity. These properties are correlated to POSS assembly, molecular interactions, and the specific attributes of peripheral structure and connectivity to the inorganic core.
C1 [Yandek, Gregory R.; Ramirez, Sean M.] USAF, Rocket Prop Div, Res Lab, ERC Inc, Edwards Afb, CA 93524 USA.
RP Yandek, GR (reprint author), USAF, Rocket Prop Div, Res Lab, ERC Inc, Edwards Afb, CA 93524 USA.
EM gregory.yandek@edwards.af.mil; joseph.mabry@edwards.af.mil
FU Air Force Office of Scientific Research; Rocket Propulsion Division of
   the Air Force Research Laboratory
FX We gratefully acknowledge financial support from the Air Force Office of
   Scientific Research and the Rocket Propulsion Division of the Air Force
   Research Laboratory. We also thank Dr. Andrew Guenthner, Dr. Timothy
   Haddad, and Prof. Andre Lee for insightful discussions.
NR 31
TC 6
Z9 6
U1 0
U2 12
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 AUG 9
PY 2012
VL 116
IS 31
BP 16755
EP 16765
DI 10.1021/jp3039708
PG 11
WC Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science,
   Multidisciplinary
SC Chemistry; Science & Technology - Other Topics; Materials Science
GA 985KW
UT WOS:000307264500050
ER

PT J
AU Su, YJ
   Johnston, WR
   Albert, JM
   Ginet, GP
   Starks, MJ
   Roth, CJ
AF Su, Yi-Jiun
   Johnston, W. R.
   Albert, J. M.
   Ginet, G. P.
   Starks, M. J.
   Roth, C. J.
TI SCATHA measurements of electron decay times at 5 < L <= 8
SO JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
LA English
DT Article
ID RADIATION BELT ELECTRONS; PITCH-ANGLE DIFFUSION; RELATIVISTIC ELECTRONS;
   INNER MAGNETOSPHERE; GEOMAGNETIC STORMS; SOLAR-WIND; LIFETIMES; LOSSES;
   SCATTERING; CHORUS
AB The electron decay timescale (tau) is well known to be associated with radiation belt loss processes. Knowledge of tau is important for understanding pitch angle and radial diffusion mechanisms. Previous studies reported decay timescales from the inner belt to geosynchronous orbits; however, relatively few statistical studies have been focused on the region beyond the traditional outer belt. In this paper, a systematic calculation of electron decay times at 5 < L <= 8 is performed using 11 years (1979-1989) of electron data from the Spacecraft Charging AT High Altitudes (SCATHA) satellite. The decay timescale is determined using daily median fluxes, providing resolution of tau > 1 day. tau is examined as a function of energy, pitch angle, L shell, Kp, and AE during magnetically disturbed periods when Dst <= -50 nT. Results show that tau increases with increasing electron energy at L < 6.6 for electron energies from 50 to 300 keV, but is independent of energy at L > 6.6. This suggests radial transport as the dominant effect at L > 6.6. Additionally, tau decreases with increasing L-shell. This dependence has the strongest correlation and is seen in all energies and pitch angles. However, tau has no systematic dependence with pitch angle suggesting that pitch angle diffusion also plays a key role in the electron loss process. Based on our results, tau can be expressed as a function of energy and L, and coefficients are provided for a two-variable fit. Surprisingly, tau is slightly longer for higher activity cases at L < 6.6, which is inconsistent with the current radial or pitch angle diffusion models. Global effective decay times on the timescale of days place an upper bound on the true loss timescale.
C1 [Su, Yi-Jiun; Johnston, W. R.; Albert, J. M.; Starks, M. J.] USAF, Space Vehicles Directorate, Res Lab, Kirtland AFB, NM 87117 USA.
   [Ginet, G. P.] MIT Lincoln Lab, Lexington, MA USA.
   [Roth, C. J.] Atmospher & Environm Res Inc, Lexington, MA USA.
RP Su, YJ (reprint author), USAF, Space Vehicles Directorate, Res Lab, 3550 Aberdeen Ave SE,Bldg 570, Kirtland AFB, NM 87117 USA.
EM yi-jiun.su@kirtland.af.mil
OI Albert, Jay/0000-0001-9494-7630
FU NASA [NNH09AK051]; Ionospheric Impacts on RF Systems 6.2 program at AFRL
FX The first author would like to thank the AE9/AP9 team for providing data
   resources, Paul O'Brien at the Aerospace Corporation for his guidance in
   the data cleaning process, colleagues at Los Alamos National Laboratory
   (LANL) for providing relevant references of geosynchronous observations,
   Ron Caton for proofreading the manuscript, and reviewers for insightful
   comments. The Kp, AE, and Dst indices were provided by the World Data
   Center for Geomagnetism, Kyoto. This research task was supported in part
   by the NASA grant NNH09AK051 to AFRL and the Ionospheric Impacts on RF
   Systems 6.2 program at AFRL.
NR 44
TC 3
Z9 3
U1 0
U2 1
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 AUG 9
PY 2012
VL 117
AR A08212
DI 10.1029/2012JA017685
PG 11
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 988AA
UT WOS:000307459300004
ER

PT J
AU Haughey, SA
   Field, TA
   Langer, J
   Shuman, NS
   Miller, TM
   Friedman, JF
   Viggiano, AA
AF Haughey, Sean A.
   Field, Thomas A.
   Langer, Judith
   Shuman, Nicholas S.
   Miller, Thomas M.
   Friedman, Jeffrey F.
   Viggiano, A. A.
TI Dissociative electron attachment to C2F5 radicals
SO JOURNAL OF CHEMICAL PHYSICS
LA English
DT Article
ID R-MATRIX METHOD; MASS-SPECTROMETRY; CROSS-SECTIONS; HIGH-RESOLUTION;
   MOLECULES; COLLISIONS; SF6; ENERGIES; CAPTURE; BEAM
AB Dissociative electron attachment to the reactive C2F5 molecular radical has been investigated with two complimentary experimental methods; a single collision beam experiment and a new flowing afterglow Langmuir probe technique. The beam results show that F- is formed close to zero electron energy in dissociative electron attachment to C2F5. The afterglow measurements also show that F- is formed in collisions between electrons and C2F5 molecules with rate constants of 3.7 x 10(-9) cm(3) s(-1) to 4.7 x 10(-9) cm(3) s(-1) at temperatures of 300-600 K. The rate constant increases slowly with increasing temperature, but the rise observed is smaller than the experimental uncertainty of 35%. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4738759]
C1 [Haughey, Sean A.; Field, Thomas A.] Queens Univ Belfast, Sch Math & Phys, Ctr Plasma Phys, Belfast BT7 1NN, Antrim, North Ireland.
   [Langer, Judith] Tech Univ Berlin, Inst Opt & Atomare Phys, D-10623 Berlin, Germany.
   [Shuman, Nicholas S.; Miller, Thomas M.; Friedman, Jeffrey F.; Viggiano, A. A.] USAF, Res Lab, Space Vehicles Directorate, Kirtland AFB, NM 87117 USA.
RP Haughey, SA (reprint author), Queens Univ Belfast, Sch Math & Phys, Ctr Plasma Phys, Belfast BT7 1NN, Antrim, North Ireland.
EM t.field@qub.ac.uk
RI Langer, Judith/A-5909-2013
OI Langer, Judith/0000-0003-3527-5728
FU Air Force Office of Scientific Research; National Research Council
   Research Associateship Program [AFOSR-2303EP]; EPSRC; Royal Society;
   COST Action [CM0601 ECCL]; European Project ITS LEIF [RII3-026015]
FX The AFRL authors are grateful for the support of the Air Force Office of
   Scientific Research for this work. N.S.S. was supported by the National
   Research Council Research Associateship Program under Project No.
   AFOSR-2303EP. T.M.M. and J.F.F. are under contract to the Institute for
   Scientific Research of Boston College. The Belfast authors are grateful
   for the support of the EPSRC, Royal Society, and COST Action CM0601
   ECCL. J.L. is grateful for Transnational Access granted by the European
   Project ITS LEIF (RII3-026015). Finally, many thanks to Professor Eugen
   Illenberger for inspiration and encouragement of this work.
NR 49
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U1 2
U2 14
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 AUG 7
PY 2012
VL 137
IS 5
AR 054310
DI 10.1063/1.4738759
PG 8
WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical
SC Chemistry; Physics
GA 994HM
UT WOS:000307921500029
PM 22894351
ER

PT J
AU Miracolo, MA
   Drozd, GT
   Jathar, SH
   Presto, AA
   Lipsky, EM
   Corporan, E
   Robinson, AL
AF Miracolo, Marissa A.
   Drozd, Greg T.
   Jathar, Shantanu H.
   Presto, Albert A.
   Lipsky, Eric M.
   Corporan, Edwin
   Robinson, Allen L.
TI Fuel Composition and Secondary Organic Aerosol Formation: Gas-Turbine
   Exhaust and Alternative Aviation Fuels
SO ENVIRONMENTAL SCIENCE & TECHNOLOGY
LA English
DT Article
ID MASS-SPECTROMETER DATA; FISCHER-TROPSCH FUELS; PHOTOCHEMICAL OXIDATION;
   EMISSIONS CHARACTERISTICS; ENVIRONMENTAL CHAMBER; HYDROCARBON EMISSIONS;
   DIESEL EXHAUST; SMOG CHAMBER; JET FUEL; PHOTOOXIDATION
AB A series of smog chamber experiments were performed to investigate the effects of fuel composition on secondary particulate matter (PM) formation from dilute exhaust from a T63 gas-turbine engine. Tests were performed at idle and cruise loads with the engine fueled on conventional military jet fuel (JP-8), Fischer Tropsch synthetic jet fuel (FT), and a 50/50 blend of the two fuels. Emissions were sampled into a portable smog chamber and exposed to sunlight or artificial UV light to initiate photo-oxidation. Similar to previous studies, neat FT fuel and a 50/50 FT/JP-8 blend reduced the primary particulate matter emissions compared to neat JP-8. After only one hour of photo-oxidation at typical atmospheric OH levels, the secondary PM production in dilute exhaust exceeded primary PM emissions, except when operating the engine at high load on FT fuel. Therefore, accounting for secondary PM production should be considered when assessing the contribution of gas-turbine engine emissions to ambient PM levels. FT fuel substantially reduced secondary PM formation in dilute exhaust compared to neat JP-8 at both idle and cruise loads. At idle load, the secondary PM formation was reduced by a factor of 20 with the use of neat FT fuel, and a factor of 2 with the use of the blend fuel. At cruise load, the use of FT fuel resulted in no measured formation of secondary PM. In every experiment, the secondary PM was dominated by organics with minor contributions from sulfate when the engine was operated on JP-8 fuel. At both loads, FT fuel produces less secondary organic aerosol than JP-8 because of differences in the composition of the fuels and the resultant emissions. This work indicates that fuel reformulation may be a viable strategy to reduce the contribution of emissions from combustion systems to secondary organic aerosol production and ultimately ambient PM levels.
C1 [Miracolo, Marissa A.; Drozd, Greg T.; Jathar, Shantanu H.; Presto, Albert A.; Robinson, Allen L.] Carnegie Mellon Univ, Ctr Atmospher Particle Studies, Pittsburgh, PA 15213 USA.
   [Lipsky, Eric M.] Penn State Greater Allegheny, Mckeesport, PA 15132 USA.
   [Corporan, Edwin] USAF, Res Lab, Dayton, OH 45460 USA.
RP Robinson, AL (reprint author), Carnegie Mellon Univ, Ctr Atmospher Particle Studies, Pittsburgh, PA 15213 USA.
EM alr@andrew.cmu.edu
RI Presto, Albert/C-3193-2008; Robinson, Allen/I-5713-2012; Robinson,
   Allen/M-3046-2014; Jathar, Shantanu/A-2966-2015
OI Presto, Albert/0000-0002-9156-1094; Robinson, Allen/0000-0003-1053-7090;
   Robinson, Allen/0000-0002-1819-083X; Jathar,
   Shantanu/0000-0003-4106-2358
FU U.S. Department of Defense Strategic Environmental Research and
   Development Program (SERDP) [WP-1626]
FX Funding was provided by the U.S. Department of Defense Strategic
   Environmental Research and Development Program (SERDP) under project
   WP-1626. We thank Chris Klingshirn, David Anneken, Matt DeWitt, and Joe
   Mantz from University of Dayton Research Institute and Matt Wagner and
   Dean Brigalli from the Air Force Research Laboratory for help with the
   testing. The views, opinions, and/or findings contained in this paper
   are those of the authors and should not be construed as an official
   position of any of the funding agencies.
NR 48
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U1 4
U2 39
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0013-936X
EI 1520-5851
J9 ENVIRON SCI TECHNOL
JI Environ. Sci. Technol.
PD AUG 7
PY 2012
VL 46
IS 15
BP 8493
EP 8501
DI 10.1021/es300350c
PG 9
WC Engineering, Environmental; Environmental Sciences
SC Engineering; Environmental Sciences & Ecology
GA 984OG
UT WOS:000307199800073
PM 22732009
ER

PT J
AU Radivojevic, I
   Bazzan, G
   Burton-Pye, BP
   Ithisuphalap, K
   Saleh, R
   Durstock, MF
   Francesconi, LC
   Drain, CM
AF Radivojevic, Ivana
   Bazzan, Giorgio
   Burton-Pye, Benjamin P.
   Ithisuphalap, Kemakorn
   Saleh, Raihan
   Durstock, Michael F.
   Francesconi, Lynn C.
   Drain, Charles Michael
TI Zirconium(IV) and Hafnium(IV) Porphyrin and Phthalocyanine Complexes as
   New Dyes for Solar Cell Devices
SO JOURNAL OF PHYSICAL CHEMISTRY C
LA English
DT Article
ID NANOCRYSTALLINE TIO2 FILMS; CONVERSION EFFICIENCY; ZINC PHTHALOCYANINE;
   SPECTRAL PROPERTIES; ULTRAFAST DYNAMICS; SANDWICH COMPLEXES;
   ENERGY-CONVERSION; SELF-ORGANIZATION; ELECTRON-TRANSFER; ANCHORING
   GROUPS
AB Metalloporphyrin and metallophthalocyanine dyes ligating Hf(IV) and Zr(IV) ions bind to semiconductor oxide surfaces such as TiO2 via the protruding group IV metal ions. The use of oxophilic metal ions with large ionic radii that protrude from the macrocycle is a unique mode of attaching chromophores to oxide surfaces in the design of dye-sensitized solar cells (DSSCs). Our previous report on the structure and physical properties of ternary complexes wherein the Hf(IV) and Zr(IV) ions are ligated to both a porphyrinoid and to a defect site on a polyoxometalate (POM) represents a model for this new way of binding dyes to oxide surfaces. The Zr(IV) and Hf(IV) complexes of 5,10,15,20-tetraphenylporphyrin (TPP) with two ligated acetates, (TPP)Hf(OAc)(2) and (TPP)Zr(OAc)(2), and the corresponding metallophthalocyanine (Pc) diacetate complexes, (Pc)Hf(OAc)(2) and (Pc)Zr(OAc)(2), were evaluated as novel dyes for the fabrication of dye-sensitized solar cells. Similarly to the ternary complexes with the POM, the oxide surface replaces the acetates to affect binding. In DSSCs, the Zr(IV) phthalocyanine dye performs better than the Zr(IV) porphyrin dye, and reaches an overall efficiency of similar to 1.0%. The Hf(IV) dyes are less efficient. The photophysical properties of these complexes in solution suggested energetically favorable injection of electrons into the conduction band of TiO2 semiconductor nanoparticles, as well as a good band gap match with I-3(-)/I(-)pair in liquid 1-butyl-3-methyl imidazolium iodide. The combination of blue absorbing TPP with the red absorbing Pc complexes can increase the absorbance of solar light in the device; however, the overall conversion efficiency of DSSCs using TiO2 nanoparticles treated with a mixture of both Zr(IV) complexes is comparable, but not greater than, the single (Pc)Zr. Thus, surface bound (TPP)Zr increases the absorbance in blue region of the spectra, but at the cost of diminished absorbance in the red in this DSSC architecture.
C1 [Radivojevic, Ivana; Burton-Pye, Benjamin P.; Ithisuphalap, Kemakorn; Saleh, Raihan; Francesconi, Lynn C.; Drain, Charles Michael] CUNY Hunter Coll, Dept Chem & Biochem, New York, NY 10065 USA.
   [Bazzan, Giorgio; Durstock, Michael F.] USAF, Res Lab, Wright Patterson AFB, OH 45433 USA.
   [Drain, Charles Michael] Rockefeller Univ, New York, NY 10065 USA.
RP Drain, CM (reprint author), CUNY Hunter Coll, Dept Chem & Biochem, New York, NY 10065 USA.
EM cdrain@hunter.cuny.edu
FU National Science Foundation (NSF) [CHE-0847997, 0750118]; Heavy Element
   Chemistry Office of Science, Department of Energy [DE-FG02-09ER16097];
   National Institutes of Health [RR03037, MD007599]; CUNY; U.S. Department
   of Energy, Office of Basic Energy Sciences [DE-AC02-98CH10886];
   Materials and Manufacturing Directorate; Air Force Office of Scientific
   Research (AFOSR); RCMI program
FX This work was supported by the National Science Foundation (NSF),
   CHE-0847997 to C.M.D. and 0750118 to L.C.F., and by the Heavy Element
   Chemistry Office of Science, Department of Energy, DE-FG02-09ER16097 to
   L.C.F. The Hunter College science infrastructure is supported by the
   NSF, the National Institutes of Health (including RCMI program, RR03037
   and MD007599), and CUNY. Research was carried out in part at the Center
   for Functional Nanomaterials, Brookhaven National Laboratory, which is
   supported by the U.S. Department of Energy, Office of Basic Energy
   Sciences, under Contract No. DE-AC02-98CH10886; and in part at the Air
   Force Research Laboratory's (AFRL) supported by the Materials and
   Manufacturing Directorate and the Air Force Office of Scientific
   Research (AFOSR). We would like to thank Dr. Charles T. Black and Dr.
   Matthew Sfeir at the CFN for their assistance in using the facility. We
   thank Dr. Alexander Falber for some of the characterization of the
   (Pc)Zr(OAC)<INF>2</INF>.
NR 100
TC 18
Z9 18
U1 5
U2 126
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 AUG 2
PY 2012
VL 116
IS 30
BP 15867
EP 15877
DI 10.1021/jp301853d
PG 11
WC Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science,
   Multidisciplinary
SC Chemistry; Science & Technology - Other Topics; Materials Science
GA 981SH
UT WOS:000306989500002
PM 22962625
ER

PT J
AU Weller, GT
AF Weller, Grant T.
TI The Royal American Regiment: An Atlantic Microcosm, 1755-1772
SO ITINERARIO-INTERNATIONAL JOURNAL ON THE HISTORY OF EUROPEAN EXPANSION
   AND GLOBAL INTERACTION
LA English
DT Book Review
C1 [Weller, Grant T.] USAF, Washington, DC 20330 USA.
RP Weller, GT (reprint author), USAF, Washington, DC 20330 USA.
NR 1
TC 0
Z9 0
U1 0
U2 0
PU CAMBRIDGE UNIV PRESS
PI CAMBRIDGE
PA EDINBURGH BLDG, SHAFTESBURY RD, CB2 8RU CAMBRIDGE, ENGLAND
SN 0165-1153
J9 ITINERARIO
JI Itinerario
PD AUG
PY 2012
VL 36
IS 2
BP 178
EP 180
DI 10.1017/S0165115312000708
PG 4
WC History
SC History
GA 030CA
UT WOS:000310544300015
ER

PT J
AU Barnard, KJ
   Anisimov, I
   Scheihing, JE
AF Barnard, Kenneth J.
   Anisimov, Igor
   Scheihing, John E.
TI Random laser speckle based modulation transfer function measurement of
   midwave infrared focal plane arrays
SO OPTICAL ENGINEERING
LA English
DT Article
DE midwave infrared; focal plane array; modulation transfer function;
   laser, speckle; power spectral density
ID NONUNIFORMITY CORRECTION
AB Direct measurement of the modulation transfer function (MTF) of focal plane arrays (FPAs) using random laser speckle approaches for the visible/near-infrared wavelength band has been well documented over the last 20 years. These methods have not transitioned to the midwave infrared (MWIR) primarily because other techniques have been sufficient and MWIR laser sources with sufficient output power have been unavailable. However, as the detector pitch decreases, MTF measurements become more difficult due to diffraction, while potential MTF degradation due to lateral carrier diffusion crosstalk makes accurate MTF characterization critical for sensor system design. Here, a random laser speckle FPA MTF measurement approach is adapted for use in the MWIR that utilizes a quantum cascade laser coupled with an integrating sphere to generate the appropriate in-band random speckle. Specific challenges associated with the technique are addressed including the validity of the Fresnel diffraction assumptions describing the propagation of the random speckle field from the integrating sphere to the FPA. Improved methods for estimating the power spectral density (PSD) of the measured speckle that reduce data requirements are presented. The statistics and uniformity of the laser speckle are presented along with PSD measurements and estimated MTFs of a MWIR FPA. (C) 2012 Society of Photo-Optical Instrumentation Engineers (SPIE). [DOI: 10.1117/1.OE.51.8.083601]
C1 [Barnard, Kenneth J.; Anisimov, Igor; Scheihing, John E.] USAF, Res Lab, AFRL RYMT, Wright Patterson AFB, OH 45433 USA.
RP Barnard, KJ (reprint author), USAF, Res Lab, AFRL RYMT, 2241 Avion Circle, Wright Patterson AFB, OH 45433 USA.
EM kenneth.barnard@wpafb.af.mil
FU DARPA I2O
FX This research was funded by DARPA I2O, and the authors wish to thank Dr.
   Brian Leininger for his enthusiastic support. The authors also
   appreciate the reviewer comments that helped improve the quality of the
   manuscript.
NR 14
TC 0
Z9 0
U1 2
U2 10
PU SPIE-SOC PHOTO-OPTICAL INSTRUMENTATION ENGINEERS
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98225 USA
SN 0091-3286
J9 OPT ENG
JI Opt. Eng.
PD AUG
PY 2012
VL 51
IS 8
AR 083601
DI 10.1117/1.OE.51.8.083601
PG 8
WC Optics
SC Optics
GA 021VH
UT WOS:000309913000025
ER

PT J
AU Zheng, YF
   Dong, WJ
   Blasch, EP
AF Zheng, Yufeng
   Dong, Wenjie
   Blasch, Erik P.
TI Qualitative and quantitative comparisons of multispectral night vision
   colorization techniques
SO OPTICAL ENGINEERING
LA English
DT Article
DE color fusion; color mapping; multispectral images; night vision
   colorization; joint histogram matching; statistic matching then
   joint-histogram matching; objective evaluation index
ID IMAGE REGISTRATION; FUSION; RECOGNITION; ENERGY
AB Multispectral images enable robust night vision (NV) object assessment over day-night conditions. Furthermore, colorized multispectral NV images can enhance human vision by improving observer object classification and reaction times, especially for low light conditions. NV colorization techniques can produce the colorized images that closely resemble natural scenes. Qualitative (subjective) and quantitative (objective) comparisons of NV colorization techniques proposed in the past decade are made and two categories of coloring methods, color fusion and color mapping, are discussed and compared. Color fusion directly combines multispectral NV images into a color-version image by mixing pixel intensities at different color planes, of which a channel-based color fusion method is reviewed. Color-mapping usually maps the color properties of a false-colored NV image (source) onto that of a true-color daylight target picture (reference). Four coloring-mapping methods-statistical matching, histogram matching, joint histogram matching, and look-up table (LUT)-are presented and compared, including a new color-mapping method called joint-histogram matching (JHM). The experimental NV imagery includes visible (Red-Green-Blue), image-intensified, near infrared, and long-wave infrared images. The qualitative evaluations are conducted by visual inspections of the colorized images, whereas the quantitative evaluations are achieved by a newly proposed metric, objective evaluation index. From the experimental results according to both qualitative and quantitative evaluations, the following conclusions can be drawn: the segmentation-based colorization method produces very impressive and realistic colors but requires intense computations; color fusion and LUT-based methods run very fast but with less realistic results; the statistic-matching method always provides acceptable results; histogram matching and joint-histogram matching can generate impressive and vivid colors when the color distributions between source and target are similar; and the statistic-matching then joint-histogram matching (SM-JHM) method is a reliable and efficient method recommended from both qualitative and quantitative evaluations. (C) 2012 Society of Photo-Optical Instrumentation Engineers (SPIE). [DOI: 10.1117/1.OE.51.8.087004]
C1 [Zheng, Yufeng] Alcorn State Univ, Dept Adv Technol, Lorman, MS 39096 USA.
   [Dong, Wenjie] Univ Texas Pan Amer, Dept Elect Engn, Edinburg, TX 78539 USA.
   [Blasch, Erik P.] USAF, Res Lab, Informat Directorate, Rome, NY 13441 USA.
RP Zheng, YF (reprint author), Alcorn State Univ, Dept Adv Technol, Lorman, MS 39096 USA.
EM yzheng@alcorn.edu
FU U. S. Army Research Office [W911NF-08-1-0404]
FX This research is supported by the U. S. Army Research Office under Grant
   Number W911NF-08-1-0404.
NR 39
TC 6
Z9 6
U1 0
U2 8
PU SPIE-SOC PHOTO-OPTICAL INSTRUMENTATION ENGINEERS
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98225 USA
SN 0091-3286
J9 OPT ENG
JI Opt. Eng.
PD AUG
PY 2012
VL 51
IS 8
AR 087004
DI 10.1117/1.OE.51.8.087004
PG 16
WC Optics
SC Optics
GA 021VH
UT WOS:000309913000059
ER

PT J
AU Sturrock, PA
   Steinitz, G
   Fischbach, E
   Javorsek, D
   Jenkins, JH
AF Sturrock, P. A.
   Steinitz, G.
   Fischbach, E.
   Javorsek, D., II
   Jenkins, J. H.
TI Analysis of gamma radiation from a radon source: Indications of a solar
   influence
SO ASTROPARTICLE PHYSICS
LA English
DT Article
DE Sun; Neutrinos
ID POWER SPECTRUM ANALYSIS; NEUTRINO PROBLEM; DECAY-RATE; HALF-LIFE;
   PRECESSION; MODULATION; MATTER; RATES
AB This article presents an analysis of about 29,000 measurements of gamma radiation associated with the decay of radon in a sealed container at the Geological Survey of Israel (GSI) Laboratory in Jerusalem between 28 January 2007 and 10 May 2010. These measurements exhibit strong variations in time of year and time of day, which may be due in part to environmental influences. However, time-series analysis reveals a number of periodicities, including two at approximately 11.2 year(-1) and 12.5 year(-1). We have previously found these oscillations in nuclear-decay data acquired at the Brookhaven National Laboratory and at the Physiklisch-Technische Bundesanstalt, and we have suggested that these oscillations are attributable to some form of solar radiation that has its origin in the deep solar interior. A curious property of the GSI data is that the annual oscillation is much stronger in daytime data than in nighttime data, but the opposite is true for all other oscillations. This may be a systematic effect but, if it is not, this property should help narrow the theoretical options for the mechanism responsible for decay-rate variability. (C) 2012 Elsevier B.V. All rights reserved.
C1 [Sturrock, P. A.] Stanford Univ, Ctr Space Sci & Astrophys, Stanford, CA 94305 USA.
   [Steinitz, G.] Geol Survey Israel, IL-95501 Jerusalem, Israel.
   [Fischbach, E.; Jenkins, J. H.] Purdue Univ, Dept Phys, W Lafayette, IN 47907 USA.
   [Javorsek, D., II] 411th Flight Test Squadron, Edwards AFB, CA 93524 USA.
   [Jenkins, J. H.] Purdue Univ, Sch Nucl Engn, W Lafayette, IN 47907 USA.
RP Sturrock, PA (reprint author), Stanford Univ, Ctr Space Sci & Astrophys, Stanford, CA 94305 USA.
EM sturrock@stanford.edu
OI Javorsek, Daniel/0000-0002-0329-4011
FU US DOE [DE-AC02-76ER071428]
FX The work of EF was supported in part by US DOE contract No.
   DE-AC02-76ER071428.
NR 15
TC 17
Z9 18
U1 1
U2 11
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0927-6505
J9 ASTROPART PHYS
JI Astropart Phys.
PD AUG
PY 2012
VL 36
IS 1
BP 18
EP 25
DI 10.1016/j.astropartphys.2012.04.009
PG 8
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 020CT
UT WOS:000309787000003
ER

PT J
AU Beier, HT
   Noojin, GD
   Rockwell, BA
AF Beier, Hope T.
   Noojin, Gary D.
   Rockwell, Benjamin A.
TI Localized thermal mapping using coherent anti-Stokes Raman spectroscopy
SO JOURNAL OF BIOMEDICAL OPTICS
LA English
DT Article
DE coherent anti-Stokes Raman scattering; Raman spectroscopy; multiphoton
   microscopy; temperature
ID LIQUID WATER; TEMPERATURE; SCATTERING
AB Coherent anti-Stokes Raman scattering (CARS) spectroscopy is explored as a tool for obtaining microscale thermal measurements. A single femtosecond oscillator is used to pump a photonic crystal fiber to provide the broadband Stokes pulse. The CARS signals from the broad OH-stretching modes between 3000 and 3600 cm(-1) are shown to correlate with temperature with an accuracy of +/- 1 degrees C for water and +/- 1.5 degrees C for phosphate-buffered saline. Local variation of temperature is mapped on a microscopic level, using black-dyed microspheres as thermal sources. (C) 2012 Society of Photo-Optical Instrumentation Engineers (SPIE). [DOI: 10.1117/1.JBO.17.8.080501]
C1 [Beier, Hope T.; Rockwell, Benjamin A.] USAF, Res Lab, Ft Sam Houston, TX 78234 USA.
   [Noojin, Gary D.] TASC Inc, Ft Sam Houston, TX 78234 USA.
RP Beier, HT (reprint author), USAF, Res Lab, 4141 Petr Rd,Bldg 3260, Ft Sam Houston, TX 78234 USA.
EM hopebeier@gmail.com
FU Air Force Office of Scientific Research (AFOSR) [12RH0ICOR]; AFRL
   [FA8650-08-D-6930]
FX This research was performed while Hope Beier held an Air Force Office of
   Scientific Research (AFOSR) sponsored National Research Council Research
   Associateship Award at the Air Force Research Laboratory/Human
   Performance Wing and AFOSR LRIR Award #12RH0ICOR. Contract support was
   provided under AFRL contract number FA8650-08-D-6930.
NR 10
TC 2
Z9 2
U1 1
U2 5
PU SPIE-SOC PHOTO-OPTICAL INSTRUMENTATION ENGINEERS
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98225 USA
SN 1083-3668
J9 J BIOMED OPT
JI J. Biomed. Opt.
PD AUG
PY 2012
VL 17
IS 8
AR 080501
DI 10.1117/1.JBO.17.8.080501
PG 3
WC Biochemical Research Methods; Optics; Radiology, Nuclear Medicine &
   Medical Imaging
SC Biochemistry & Molecular Biology; Optics; Radiology, Nuclear Medicine &
   Medical Imaging
GA 018WF
UT WOS:000309696800001
PM 23224152
ER

PT J
AU Casazza, PG
   Fickus, M
   Heinecke, A
   Wang, Y
   Zhou, ZF
AF Casazza, Peter G.
   Fickus, Matthew
   Heinecke, Andreas
   Wang, Yang
   Zhou, Zhengfang
TI Spectral Tetris Fusion Frame Constructions
SO JOURNAL OF FOURIER ANALYSIS AND APPLICATIONS
LA English
DT Article
DE Frames; Fusion frames; Spectral tetris
AB Spectral tetris is a flexible and elementary method to construct unit norm frames with a given frame operator, having all of its eigenvalues greater than or equal to two. One important application of spectral tetris is the construction of fusion frames. We first show how the assumption on the spectrum of the frame operator can be dropped and extend the spectral tetris algorithm to construct unit norm frames with any given spectrum of the frame operator. We then provide a sufficient condition for using this generalization of spectral tetris to construct fusion frames with prescribed spectrum for the fusion frame operator and with prescribed dimensions for the subspaces. This condition is shown to be necessary in the tight case of redundancy greater than or equal to two.
C1 [Fickus, Matthew] USAF, Dept Math & Stat, Inst Technol, Wright Patterson AFB, OH 45433 USA.
   [Casazza, Peter G.; Heinecke, Andreas] Univ Missouri, Dept Math, Columbia, MO 65211 USA.
   [Wang, Yang; Zhou, Zhengfang] Michigan State Univ, Dept Math, E Lansing, MI 48824 USA.
RP Casazza, PG (reprint author), USAF, Dept Math & Stat, Inst Technol, Wright Patterson AFB, OH 45433 USA.
EM casazzap@missouri.edu; Matthew.Fickus@afit.edu; ah343@mail.mizzou.edu;
   ywang@math.msu.edu; zfzhou@math.msu.edu
OI Wang, Yang/0000-0002-8903-2388
FU DTRA/NSF [1042701]; AFOSR [F1ATA00183G003, F1ATA00083G004,
   F1ATA0035J001]; NSF [DMS 1008183, DMS-0813750, DMS-08135022,
   DMS-1043034, DMS-0968360]
FX PGC, MF and AH were supported by DTRA/NSF 1042701 and AFOSR
   F1ATA00183G003. Additional support was provided by NSF DMS 1008183 (PGC,
   AH) and AFOSR F1ATA00083G004, F1ATA0035J001 (MF), NSF DMS-0813750,
   DMS-08135022 and DMS-1043034 (YW), NSF DMS-0968360 (ZZ). The views
   expressed in this article are those of the authors and do not reflect
   the official policy or position of the United States Air Force,
   Department of Defense, or the US Government.
NR 12
TC 6
Z9 8
U1 0
U2 6
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 1069-5869
J9 J FOURIER ANAL APPL
JI J. Fourier Anal. Appl.
PD AUG
PY 2012
VL 18
IS 4
BP 828
EP 851
DI 10.1007/s00041-012-9225-6
PG 24
WC Mathematics, Applied
SC Mathematics
GA 022FP
UT WOS:000309941300008
ER

PT J
AU Fossum, EC
   Molek, CD
   Lewis, WK
   Fajardo, ME
AF Fossum, Emily C.
   Molek, Christopher D.
   Lewis, William K.
   Fajardo, Mario E.
TI Benchtop Energetics: Hyperthermal Species Detection
SO PROPELLANTS EXPLOSIVES PYROTECHNICS
LA English
DT Article
DE Detonation; Deflagration; Diagnostics; TOFMS; Laser ablation;
   Hyperthermal; SIMION
ID FLIGHT MASS-SPECTROMETRY; ABLATED ALUMINUM ATOMS; THIN-FOIL TARGETS;
   SHOCK-WAVES; PENTAERYTHRITOL TETRANITRATE; DETONATION PRODUCTS;
   ACCELERATION; SPECTROSCOPY; RESOLUTION; DECOMPOSITION
AB We propose a novel scheme for monitoring the transition between deflagration and detonation-like behavior of small-scale explosive samples-in-vacuum subjected to short duration shock stimuli. Our approach relies on measuring the chemical identities and velocity distributions of the gaseous species produced by such samples; e.g. the relatively low velocity expansion-quenched reaction intermediates produced by deflagration versus the hyperthermal thermodynamically stable molecules generated by the termination of a detonation wave at an explosive-vacuum interface. We demonstrate our ability to detect such species by time-of-flight mass spectrometry (TOFMS) using fast Al atoms produced by laser ablation of aluminum metal. Extensive SIMION simulations of ion trajectories in our mass spectrometer lead to a semi-quantitative model connecting the system operating parameters and the velocity-dependent neutral species detection efficiency. We present a method for correcting our data for these detection biases, and for transforming them into neutral species velocity and kinetic energy distributions. We also present preliminary TOFMS data of hyperthermal organic molecular species produced by direct laser ablation/ignition of thin-film nitrocellulose samples.
C1 [Fossum, Emily C.; Molek, Christopher D.; Lewis, William K.; Fajardo, Mario E.] USAF, Munit Directorate, Res Lab, AFRL RWME, Eglin AFB, FL 32542 USA.
RP Fossum, EC (reprint author), USAF, Munit Directorate, Res Lab, AFRL RWME, 2306 Perimeter Rd, Eglin AFB, FL 32542 USA.
EM mario.fajardo@eglin.af.mil
FU National Research Council
FX ECF and WKL gratefully acknowledge the National Research Council
   Research Associateship Awards, which supported their research on this
   project at the U.S. Air Force Research Laboratory Munitions Directorate.
   MEF gratefully acknowledges the patience and endurance of his co-workers
   over these past five years.
NR 58
TC 1
Z9 1
U1 3
U2 5
PU WILEY-V C H VERLAG GMBH
PI WEINHEIM
PA BOSCHSTRASSE 12, D-69469 WEINHEIM, GERMANY
SN 0721-3115
J9 PROPELL EXPLOS PYROT
JI Propellants Explos. Pyrotech.
PD AUG
PY 2012
VL 37
IS 4
BP 445
EP 458
DI 10.1002/prep.201100069
PG 14
WC Chemistry, Applied; Engineering, Chemical
SC Chemistry; Engineering
GA 984WJ
UT WOS:000307223200010
ER

PT J
AU Greener, T
   Peterson, A
   Pinske, K
AF Greener, Trent
   Peterson, Andrew
   Pinske, Kim
TI Learning from Each Other: Staying Current in the Field
SO STRENGTH AND CONDITIONING JOURNAL
LA English
DT Article
AB THE STRENGTH AND CONDITIONING PROFESSION IS AN EXPANDING FIELD WITH NEW INFORMATION ON HOW TO BETTER TRAIN ATHLETES READILY AVAILABLE. WITH SO MUCH NEW INFORMATION EASILY OBTAINABLE, IT IS THE RESPONSIBILITY OF STRENGTH AND CONDITIONING COACHES TO STAY CURRENT TO BEST SERVE AND PREPARE THEIR ATHLETES. THE QUESTION IN THIS ISSUE IS HOW DO THE COACHES CONTRIBUTING TO THIS COLUMN STAY CURRENT WITH THE LATEST INFORMATION.
C1 [Greener, Trent] Univ Wyoming, Athlet Dept, Laramie, WY 82071 USA.
   [Peterson, Andrew] Humboldt State Univ, Athlet Dept, Arcata, CA 95521 USA.
   [Pinske, Kim] USAF Acad, Athlet Dept, Colorado Springs, CO 80840 USA.
RP Greener, T (reprint author), Univ Wyoming, Athlet Dept, Laramie, WY 82071 USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU LIPPINCOTT WILLIAMS & WILKINS
PI PHILADELPHIA
PA 530 WALNUT ST, PHILADELPHIA, PA 19106-3621 USA
SN 1524-1602
J9 STRENGTH COND J
JI Strength Cond. J.
PD AUG
PY 2012
VL 34
IS 4
BP 87
EP 88
DI 10.1519/SSC.0b013e31825a8f50
PG 2
WC Sport Sciences
SC Sport Sciences
GA 016UG
UT WOS:000309544400014
ER

PT J
AU Kota, AK
   Kwon, G
   Choi, W
   Mabry, JM
   Tuteja, A
AF Kota, Arun K.
   Kwon, Gibum
   Choi, Wonjae
   Mabry, Joseph M.
   Tuteja, Anish
TI Hygro-responsive membranes for effective oil-water separation
SO NATURE COMMUNICATIONS
LA English
DT Article
ID DEAD-END MICROFILTRATION; SURFACE-PROPERTIES; FLUX DECLINE; CROSS-FLOW;
   MESH FILM; EMULSIONS; DEMULSIFICATION; PERMEATION; MIXTURES; COATINGS
AB There is a critical need for new energy-efficient solutions to separate oil-water mixtures, especially those stabilized by surfactants. Traditional membrane-based separation technologies are energy-intensive and limited, either by fouling or by the inability of a single membrane to separate all types of oil-water mixtures. Here we report membranes with hygro-responsive surfaces, which are both superhydrophilic and superoleophobic, in air and under water. Our membranes can separate, for the first time, a range of different oil-water mixtures in a single-unit operation, with >99.9% separation efficiency, by using the difference in capillary forces acting on the two phases. Our separation methodology is solely gravity-driven and consequently is expected to be highly energy-efficient. We anticipate that our separation methodology will have numerous applications, including the clean-up of oil spills, wastewater treatment, fuel purification and the separation of commercially relevant emulsions.
C1 [Kota, Arun K.; Kwon, Gibum; Tuteja, Anish] Univ Michigan, Dept Mat Sci & Engn, Ann Arbor, MI 48109 USA.
   [Choi, Wonjae] Univ Texas Dallas, Dept Mech Engn, Richardson, TX 75080 USA.
   [Mabry, Joseph M.] USAF, Res Lab, Rocket Prop Div, Edwards AFB, CA 93524 USA.
RP Tuteja, A (reprint author), Univ Michigan, Dept Mat Sci & Engn, Ann Arbor, MI 48109 USA.
EM atuteja@umich.edu
FU Air Force Office of Scientific Research [FA9550-10-1-0523,
   LRIR-12RZ03COR]
FX We thank C. Y.-C. Lee and the Air Force Office of Scientific Research
   for financial support under grants FA9550-10-1-0523 and LRIR-12RZ03COR.
   We thank R. E. Cohen, G. H. McKinley, D. Lee, J. P. Youngblood and B. J.
   Love for comments. We also thank J. Kim, N. A. Kotov and M. J. Solomon
   for use of facilities. We thank B. Wight for help with Karl Fischer
   analysis.
NR 40
TC 272
Z9 275
U1 76
U2 581
PU NATURE PUBLISHING GROUP
PI LONDON
PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND
SN 2041-1723
J9 NAT COMMUN
JI Nat. Commun.
PD AUG
PY 2012
VL 3
AR 1025
DI 10.1038/ncomms2027
PG 8
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA 006EA
UT WOS:000308801100040
PM 22929782
ER

PT J
AU Telesca, D
   Sinkovic, B
   Yang, SH
   Parkin, SSP
AF Telesca, D.
   Sinkovic, B.
   Yang, See-Hun
   Parkin, S. S. P.
TI X-ray studies of interface Fe-oxide in annealed MgO based magnetic
   tunneling junctions
SO JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA
LA English
DT Article
DE Magnetic tunnel junction; CoFe/MgO; X-ray absorption spectroscopy; O
   K-edge; Fe L-edge
ID ROOM-TEMPERATURE; MAGNETORESISTANCE; FILMS; IRON; ABSORPTION; OXIDATION;
   GROWTH
AB X-ray absorption spectroscopy and X-ray scattering have been used to determine the oxidation reactions at the buried MgO/Fe interface as a result of the deposition of MgO. We confirm that Fe-oxide is present at the MgO/Fe and MgO/CoFe interfaces and amounts to less than 1 mL in thickness. The Fe-oxide is a mixture of different iron oxide phases within the ultra-thin layer which can be reduced following annealing. We Observe the transformation of the interfacial oxide from a more Fe2O3-like phase to a more FeO-like phase following annealing, and that this process is most noticeable between the 200 and 350 degrees C annealing steps. In addition, the formation of a more bulk like MgO electronic structure following annealing was observed. Published by Elsevier B.V.
C1 [Telesca, D.] Univ Connecticut, Dept Phys, Storrs, CT 06269 USA.
   [Telesca, D.; Sinkovic, B.] USAF, Space Vehicles Directorate, Res Lab, Kirtland AFB, NM 87117 USA.
   [Yang, See-Hun; Parkin, S. S. P.] IBM Amaden Res Ctr, San Jose, CA 95120 USA.
RP Telesca, D (reprint author), Univ Connecticut, Dept Phys, 2152 Hillside Rd, Storrs, CT 06269 USA.
EM donaldtelesca@gmail.com
NR 44
TC 10
Z9 10
U1 0
U2 16
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0368-2048
EI 1873-2526
J9 J ELECTRON SPECTROSC
JI J. Electron Spectrosc. Relat. Phenom.
PD AUG
PY 2012
VL 185
IS 5-7
BP 133
EP 139
DI 10.1016/j.elspec.2012.04.002
PG 7
WC Spectroscopy
SC Spectroscopy
GA 002FR
UT WOS:000308518000003
ER

PT J
AU Srivastava, A
   Xu, Y
   Liu, Y
   Sharma, AK
   Mayberry, C
AF Srivastava, Ashok
   Xu, Yao
   Liu, Yang
   Sharma, Ashwani K.
   Mayberry, Clay
TI CMOS LC Voltage Controlled Oscillator Design Using Multiwalled and
   Single-Walled Carbon Nanotube Wire Inductors
SO ACM JOURNAL ON EMERGING TECHNOLOGIES IN COMPUTING SYSTEMS
LA English
DT Article
DE Design; Performance; Carbon nanotube wire inductors; LC
   voltage-controlled oscillators; on-chip inductors; phase-locked loop;
   phase noise
ID SPIRAL INDUCTORS; BUNDLES
AB We have utilized our Multiwalled Carbon NanoTube (MWCNT) and Single-Walled Carbon NanoTube (SWCNT) bundle interconnects model in a widely used pi model to study the performances of MWCNT and SWCNT bundle wire inductors and compared these with copper (Cu) inductors. The calculation results show that the Q-factors of Carbon NanoTube (CNT) wire (SWCNT bundle and MWCNT) inductors are higher than that of the Cu wire inductor. This is mainly due to much lower resistance of CNT and negligible skin effect in carbon nanotubes at higher frequencies. The application of CNT wire inductor in LC VCO is also studied and the Cadence/Spectre simulations show that VCOs with CNT bundle wire inductors have significantly improved performance such as the higher oscillation frequency and lower phase noise due to their smaller resistances and higher Q-factors. It is also noticed that CMOS LC VCO using a SWCNT bundle wire inductor has better performance when compared with the performance of LC VCO using the MWCNT wire inductor due to its lower resistance and higher Q-factor.
C1 [Srivastava, Ashok; Xu, Yao; Liu, Yang] Louisiana State Univ, Dept Elect & Comp Engn, Baton Rouge, LA 70803 USA.
   [Sharma, Ashwani K.; Mayberry, Clay] USAF, Res Lab, Elect Fdn Grp, Kirtland AFB, NM 87117 USA.
RP Srivastava, A (reprint author), Louisiana State Univ, Dept Elect & Comp Engn, Baton Rouge, LA 70803 USA.
EM Ashok@ece.lsu.edu
FU United States Air Force Research Laboratory [FA9453-10-1-0002]
FX Part of the work is supported by the United States Air Force Research
   Laboratory under agreement no. FA9453-10-1-0002. The U.S. Government is
   authorized to reproduce and distribute reprints for Government purposes
   notwithstanding any copyright notation thereon.
NR 15
TC 1
Z9 1
U1 1
U2 6
PU ASSOC COMPUTING MACHINERY
PI NEW YORK
PA 2 PENN PLAZA, STE 701, NEW YORK, NY 10121-0701 USA
SN 1550-4832
EI 1550-4840
J9 ACM J EMERG TECH COM
JI ACM J. Emerg. Technol. Comput. Syst.
PD AUG
PY 2012
VL 8
IS 3
AR 15
DI 10.1145/2287696.2287698
PG 9
WC Computer Science, Hardware & Architecture; Engineering, Electrical &
   Electronic; Nanoscience & Nanotechnology
SC Computer Science; Engineering; Science & Technology - Other Topics
GA 993OH
UT WOS:000307868500002
ER

PT J
AU Judge, PG
   Lockwood, GW
   Radick, RR
   Henry, GW
   Shapiro, AI
   Schmutz, W
   Lindsey, C
AF Judge, P. G.
   Lockwood, G. W.
   Radick, R. R.
   Henry, G. W.
   Shapiro, A. I.
   Schmutz, W.
   Lindsey, C.
TI Confronting a solar irradiance reconstruction with solar and stellar
   data (Research Note)
SO ASTRONOMY & ASTROPHYSICS
LA English
DT Article
DE Sun: activity; Sun: surface magnetism; solar-terrestrial relations
ID SUN-LIKE STARS; MAUNDER MINIMUM; MAGNETIC REGIONS; CLIMATE;
   CHROMOSPHERE; PERSPECTIVE; ATMOSPHERE; PHOTOMETRY; PATTERNS; SEQUENCE
AB Context. A recent paper by Shapiro and colleagues (2011, A&A, 529, A67) reconstructs spectral and total irradiance variations of the Sun during the holocene.
   Aims. In this note, we comment on why their methodology leads to large (0.5%) variations in the solar TSI on century-long time scales, in stark contrast to other reconstructions which have less than or similar to 0.1% variations.
   Methods. We examine the amplitude of the irradiance variations from the point of view of both solar and stellar data.
   Results. Shapiro et al.'s large amplitudes arise from differences between the irradiances computed from models A and C of Fontenla and colleagues, and from their explicit assumption that the radiances of the quiet Sun vary with the cosmic ray modulation potential. We suggest that the upper photosphere, as given by model A, is too cool, and discuss relative contributions of local vs. global dynamos to the magnetism and irradiance of the quiet Sun. We compare the slow (>22 yr) components of the irradiance reconstructions with secular changes in stellar photometric data that span 20 years or less, and find that the Sun, if varying with such large amplitudes, would still lie within the distribution of stellar photometric variations measured over a 10-20 year period. However, the stellar time series are individually too short to see if the reconstructed variations will remain consistent with stellar variations when observed for several decades more.
   Conclusions. By adopting model A, Shapiro et al. have over-estimated quiet-Sun irradiance variations by about a factor of two, based upon a re-analysis of sub-mm data from the James Clerk Maxwell telescope. But both estimates are within bounds set by current stellar data. It is therefore vital to continue accurate photometry of solar-like stars for at least another decade, to reveal secular and cyclic variations on multi-decadal time scales of direct interest to the Sun.
C1 [Judge, P. G.] Natl Ctr Atmospher Res, High Altitude Observ, Boulder, CO 80307 USA.
   [Lockwood, G. W.] Lowell Observ, Flagstaff, AZ 86001 USA.
   [Radick, R. R.] Natl Solar Observ, AF Res Lab, Sunspot, NM 88349 USA.
   [Henry, G. W.] Tennessee State Univ, Ctr Excellence Informat Syst, Nashville, TN 37209 USA.
   [Shapiro, A. I.; Schmutz, W.] World Radiat Ctr, Phys Meteorol Observ Davos, CH-7260 Davos, Switzerland.
   [Lindsey, C.] NW Res Associates, Boulder, CO 80301 USA.
RP Judge, PG (reprint author), Natl Ctr Atmospher Res, High Altitude Observ, POB 3000, Boulder, CO 80307 USA.
EM judge@ucar.edu
RI Schmutz, Werner/B-4153-2014
OI Schmutz, Werner/0000-0003-1159-5639
FU National Science Foundation
FX The National Center for Atmospheric Research is sponsored by the
   National Science Foundation.
NR 40
TC 17
Z9 17
U1 0
U2 5
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 1432-0746
J9 ASTRON ASTROPHYS
JI Astron. Astrophys.
PD AUG
PY 2012
VL 544
AR A88
DI 10.1051/0004-6361/201218903
PG 6
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 999DS
UT WOS:000308290100088
ER

PT J
AU Drozd, GT
   Miracolo, MA
   Presto, AA
   Lipsky, EM
   Riemer, DD
   Corporan, E
   Robinson, AL
AF Drozd, Greg T.
   Miracolo, Marissa A.
   Presto, Albert A.
   Lipsky, Eric M.
   Riemer, Daniel D.
   Corporan, Edwin
   Robinson, Allen L.
TI Particulate Matter and Organic Vapor Emissions from a Helicopter Engine
   Operating on Petroleum and Fischer-Tropsch Fuels
SO ENERGY & FUELS
LA English
DT Article
ID COMMERCIAL AIRCRAFT ENGINES; FINE-PARTICLE EMISSIONS; FIRED POWER-PLANT;
   VOLATILITY DISTRIBUTION; HYDROCARBON EMISSIONS; SEMIVOLATILE ORGANICS;
   AEROSOL FORMATION; SULFUR-DIOXIDE; TURBINE-ENGINE; EXHAUST
AB Particle and gaseous emissions from a T63 gas-turbine engine were characterized using three fuels: standard military jet fuel (JP-8), Fischer-Tropsch (FT) synthetic fuel, and a 50:50 blend of each. Primary emissions were sampled using a dilution tunnel and sampling trains with both filters and sorbent tubes. Primary particulate matter (PM) and gaseous emissions for the neat FT and blend fuels were reduced relative to emissions when using JP-8 fuel at both idle and cruise loads. At idle load, PM mass emissions are reduced by 65% with neat FT fuel and by 50% for the 50:50 blend compared to neat JP-8 fuel. The JP-8/FT blend thus decreases emissions beyond the linear average of the emissions for the individual fuels. At idle load, FT fuel reduced total hydrocarbon emissions by 20%, while the blend showed no significant change compared to neat JP-8. At cruise load, neat FT fuel resulted in an 80% reduction in primary PM emissions and a 30% reduction in total hydrocarbon emissions compared to neat JP-8. Decreases in PM emissions at idle load come from lower elemental carbon (EC) and primary organic aerosol (POA), while at cruise load emissions, reductions are driven mainly by EC. Gas chromatography-mass spectrometry (GC-MS) and thermo-optical analysis of filter samples indicate that engine oil comprises a significant fraction of the POA emissions. When using FT fuel, POA emissions appear to be largely engine oil, but emissions with JP-8 fuel have a large fraction of partially oxidized organic material. The differences in POA composition may be due to both the presence of partially oxidized fuel as well as greater EC/soot levels when using JP-8 fuel. Thermodenuder and GC-MS measurements indicate that the POA emissions are semi-volatile; therefore, dynamic gas-particle partitioning will alter the contribution of primary emissions to ambient PM. Total gas-phase hydrocarbon emissions greatly outweigh POA emissions, and applying even moderate yields of secondary organic aerosol (SOA) will dominate over POA emissions. A high abundance of unsaturated volatile organic compounds (VOCs) in the gaseous emissions will enhance oxidation chemistry in the exhaust plume and promote the formation of SOA.
C1 [Drozd, Greg T.; Miracolo, Marissa A.; Presto, Albert A.; Robinson, Allen L.] Carnegie Mellon Univ, Ctr Atmospher Particle Studies, Pittsburgh, PA 15213 USA.
   [Lipsky, Eric M.] Penn State Greater Allegheny, McKeesport, PA 15132 USA.
   [Riemer, Daniel D.] Univ Miami, RSMAS, Miami, FL 33149 USA.
   [Corporan, Edwin] USAF, Res Lab, Wright Patterson AFB, Dayton, OH 45460 USA.
RP Robinson, AL (reprint author), Carnegie Mellon Univ, Ctr Atmospher Particle Studies, Pittsburgh, PA 15213 USA.
EM alr@andrew.cmu.edu
RI Presto, Albert/C-3193-2008; Robinson, Allen/I-5713-2012; Robinson,
   Allen/M-3046-2014
OI Presto, Albert/0000-0002-9156-1094; Robinson, Allen/0000-0003-1053-7090;
   Robinson, Allen/0000-0002-1819-083X
FU U.S. Department of Defense Strategic Environmental Research and
   Development Program (SERDP) [WP-1626]
FX Funding was provided by the U.S. Department of Defense Strategic
   Environmental Research and Development Program (SERDP) under Project
   WP-1626. We thank Chris Klingshirn, David Anneken, Matt DeWitt, and Joe
   Mantz from University of Dayton Research Institute and Matt Wagner and
   Dean Brigalli from the Air Force Research Laboratory for help with the
   testing. We also thank Amy Sullivan of Colorado State University for IC
   analysis of the Teflon filter samples.
NR 57
TC 5
Z9 5
U1 5
U2 32
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 AUG
PY 2012
VL 26
IS 8
BP 4756
EP 4766
DI 10.1021/ef300651t
PG 11
WC Energy & Fuels; Engineering, Chemical
SC Energy & Fuels; Engineering
GA 988ME
UT WOS:000307494300018
ER

PT J
AU Francis, SA
   Zhang, CX
   Zhang, EX
   Fleetwood, DM
   Schrimpf, RD
   Galloway, KF
   Simoen, E
   Mitard, J
   Claeys, C
AF Francis, S. Ashley
   Zhang, Cher Xuan
   Zhang, En Xia
   Fleetwood, Daniel M.
   Schrimpf, Ronald D.
   Galloway, Kenneth F.
   Simoen, Eddy
   Mitard, Jerome
   Claeys, Cor
TI Comparison of Charge Pumping and 1/f Noise in Irradiated Ge pMOSFETs
SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE
LA English
DT Article; Proceedings Paper
CT Conference on Radiation Effects on Components and Systems
   (RADECS)/Radiation Effects Data Workshop
CY SEP 19-23, 2011
CL Univ Sevilla, Escuela Super Ingenieros, Seville, SPAIN
SP Inst Nacl Tecnica Aeroespacial (INTA), Univ Sevilla, Thales Alenia Space, ALTER Technol Grp, ESA, NASA, JPL (NASA/Cal Tech), RADECS Org, IEEE, Nucl & Plasma Sci Soc (NPSS)
HO Univ Sevilla, Escuela Super Ingenieros
DE Border traps; charge pumping; interface traps; total ionizing dose; 1/f
   noise
ID LOW-FREQUENCY NOISE; OXIDE-SEMICONDUCTOR TRANSISTORS; MOS-TRANSISTORS;
   INTERFACE-TRAP; SI-SIO2 INTERFACE; GERMANIUM MOSFETS; RADIATION; GATE;
   DEFECTS; DEVICES
AB Irradiated Ge pMOSFETs have been characterized via charge pumping (I-CP) and 1/f noise. The noise increases much more with irradiation than does I-CP for devices with eight Si monolayers at the interface, while devices with five Si monolayers and lower halo implantation dose exhibit comparable increases in noise and I-CP with irradiation. These results suggest that border traps in the HfO2 affect the noise more than interface traps, and that devices with eight Si monolayers have a higher border-trap density than devices with five Si monolayers. Noise measurements as a function of gate voltage show that the border trap density increases significantly toward the Ge valence band edge, while three-level charge pumping reveals an interface trap density that increases slightly toward midgap.
C1 [Francis, S. Ashley; Zhang, Cher Xuan; Zhang, En Xia; Fleetwood, Daniel M.; Schrimpf, Ronald D.; Galloway, Kenneth F.] Vanderbilt Univ, Dept Elect Engn & Comp Sci, Nashville, TN 37235 USA.
   [Simoen, Eddy; Mitard, Jerome; Claeys, Cor] IMEC, B-3001 Louvain, Belgium.
RP Francis, SA (reprint author), USAF, Inst Technol, Wright Patterson AFB, OH 45433 USA.
EM sarah.francis.ctr@afit.edu; xuan.zhang@van-derbilt.edu;
   enxia.zhang@vanderbilt.edu; dan.fleetwood@vanderbilt.edu;
   ron.schrimpf@vanderbilt.edu; kenneth.f.galloway@vanderbilt.edu;
   simoen@imec.be; mitard@imec.be; claeys@imec.be
RI Schrimpf, Ronald/L-5549-2013; Zhang , Cher Xuan/J-4754-2015
OI Schrimpf, Ronald/0000-0001-7419-2701; Zhang , Cher
   Xuan/0000-0003-0518-864X
NR 36
TC 1
Z9 1
U1 0
U2 7
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 0018-9499
J9 IEEE T NUCL SCI
JI IEEE Trans. Nucl. Sci.
PD AUG
PY 2012
VL 59
IS 4
BP 735
EP 741
DI 10.1109/TNS.2012.2189894
PN 1
PG 7
WC Engineering, Electrical & Electronic; Nuclear Science & Technology
SC Engineering; Nuclear Science & Technology
GA 993XQ
UT WOS:000307893700009
ER

PT J
AU Dietrich, MA
   Kirkpatrick, TC
   Yaccino, JM
AF Dietrich, Matthew A.
   Kirkpatrick, Timothy C.
   Yaccino, John M.
TI In Vitro Canal and Isthmus Debris Removal of the Self-Adjusting File,
   K3, and WaveOne Files in the Mesial Root of Human Mandibular Molars
SO JOURNAL OF ENDODONTICS
LA English
DT Article
DE K-Kube; K3; SAF; Self-Adjusting File; WaveOne
ID MICRO-COMPUTED-TOMOGRAPHY; ROTARY INSTRUMENTS; OVAL CANALS; QUALITY;
   TEETH; OBTURATION; EFFICACY; ANATOMY; SYSTEMS; ABILITY
AB Introduction: The purpose of this study was to compare the effectiveness of debris removal between the Self-Adjusting File (SAF), WaveOne, and K3 file systems in the mesial roots of mandibular molars. In addition, the SAF was tested as a potential adjunct after instrumentation with other systems. Methods: The mesial roots of 30 extracted mandibular molars were mounted in resin by using the K-Kube, sectioned at 2 and 4 mm from working length, and randomly placed into 3 groups: K3 group, sequential preparation with K3 files to an apical size of 35/.04; WaveOne group, preparation with WaveOne primary file; and SAF group, preparation with SAF. Images were taken before instrumentation, after instrumentation, after final irrigation, and after SAF adjunct irrigation. A cleanliness percentage was calculated by using interactive software. Comparisons between groups were analyzed with repeated-measures analysis of variance and post hoc tests (P < .05). Results: There was no significant difference in canal cleanliness among the groups, but the WaveOne was significantly worse for isthmus cleanliness. Use of the SAF as an adjunct only significantly improved canal cleanliness in the K3 group at the 2-mm level by an average of 1.7%. Conclusions: There was no difference in canal cleanliness between the 3 file systems; however, the SAF and K3 files performed significantly better than the WaveOne with respect to isthmus cleanliness. When used as a final irrigation adjunct device after instrumentation, the SAF provided a significant improvement only in a subset of the K3 group. (J Endod 2012;38:1140-1144)
C1 [Kirkpatrick, Timothy C.] 59th Dent Training Squadron SGDTN, Wilford Hall Ambulatory Surg Ctr, Dept Endodont, Lackland AFB, TX 78236 USA.
RP Kirkpatrick, TC (reprint author), 59th Dent Training Squadron SGDTN, Wilford Hall Ambulatory Surg Ctr, Dept Endodont, 2450 Pepperrell St, Lackland AFB, TX 78236 USA.
EM Timothy.Kirkpatrick@us.af.mil
NR 29
TC 17
Z9 21
U1 0
U2 19
PU ELSEVIER SCIENCE INC
PI NEW YORK
PA 360 PARK AVE SOUTH, NEW YORK, NY 10010-1710 USA
SN 0099-2399
J9 J ENDODONT
JI J. Endod.
PD AUG
PY 2012
VL 38
IS 8
BP 1140
EP 1144
DI 10.1016/j.joen.2012.05.007
PG 5
WC Dentistry, Oral Surgery & Medicine
SC Dentistry, Oral Surgery & Medicine
GA 982FK
UT WOS:000307028100022
PM 22794223
ER

PT J
AU Kulatilaka, WD
   Gord, JR
   Katta, VR
   Roy, S
AF Kulatilaka, Waruna D.
   Gord, James R.
   Katta, Viswanath R.
   Roy, Sukesh
TI Photolytic-interference-free, femtosecond two-photon fluorescence
   imaging of atomic hydrogen
SO OPTICS LETTERS
LA English
DT Article
ID PICOSECOND EXCITATION; FLAMES; SPECTROSCOPY; NANOSECOND; OXYGEN; JET;
   LIF
AB We discuss photolytic-interference-free, high-repetition-rate imaging of reaction intermediates in flames and plasmas using femtosecond (fs) multiphoton excitation. The high peak power of fs pulses enables efficient nonlinear excitation, while the low energy nearly eliminates interfering single-photon photodissociation processes. We demonstrate proof-of-principle, interference-free, two-photon laser-induced fluorescence line imaging of atomic hydrogen in hydrocarbon flames and discuss the method's implications for certain other atomic and molecular species. (C) 2012 Optical Society of America
C1 [Kulatilaka, Waruna D.; Roy, Sukesh] Spectral Energies LLC, Dayton, OH 45431 USA.
   [Gord, James R.] USAF, Res Lab, Prop Directorate, Wright Patterson AFB, OH 45433 USA.
   [Katta, Viswanath R.] Innovat Sci Solut Inc, Dayton, OH 45440 USA.
RP Kulatilaka, WD (reprint author), Spectral Energies LLC, 5100 Springfield St,Suite 301, Dayton, OH 45431 USA.
EM waruna.kulatilaka@wpafb.af.mil
FU United States Air Force Research Laboratory [FA8650-10-C-2008]; United
   States Air Force Office of Scientific Research
FX Funding for this research was provided by the United States Air Force
   Research Laboratory under Contract No. FA8650-10-C-2008 and by the
   United States Air Force Office of Scientific Research (Drs. Enrique
   Parra and Chipping Li, Program Managers).
NR 14
TC 19
Z9 19
U1 4
U2 33
PU OPTICAL SOC AMER
PI WASHINGTON
PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA
SN 0146-9592
J9 OPT LETT
JI Opt. Lett.
PD AUG 1
PY 2012
VL 37
IS 15
BP 3051
EP 3053
PG 3
WC Optics
SC Optics
GA 984XM
UT WOS:000307226700015
PM 22859082
ER

PT J
AU Morrison, JJ
   Rasmussen, TE
AF Morrison, Jonathan J.
   Rasmussen, Todd E.
TI Noncompressible Torso Hemorrhage A Review with Contemporary Definitions
   and Management Strategies
SO SURGICAL CLINICS OF NORTH AMERICA
LA English
DT Review
DE Noncompressible torso hemorrhage; Trauma surgery; Military surgery;
   Damage-control surgery; Damage-control resuscitation
ID EMERGENCY-DEPARTMENT THORACOTOMY; DAMAGE CONTROL LAPAROTOMY;
   ENDOVASCULAR BALLOON OCCLUSION; PENETRATING ABDOMINAL-TRAUMA; CONTROL
   RESUSCITATION; AORTIC OCCLUSION; PORCINE MODEL; SURVIVAL; SUPPORT; SHOCK
AB Trauma resulting in hemorrhage from vascular disruption within the torso is a challenging scenario, with a propensity to be lethal in the first hour following trauma. The term noncompressible torso hemorrhage (NCTH) was only recently coined as part of contemporary studies describing the epidemiology of wounding during the wars in Afghanistan and Iraq. This article provides a contemporary review of NCTH, including a unifying definition to promote future study as well as a description of resuscitative and operative management strategies to be used in this setting, and sets a course for research to improve mortality following this vexing injury pattern.
C1 [Morrison, Jonathan J.; Rasmussen, Todd E.] USA, Inst Surg Res, Ft Sam Houston, TX 78234 USA.
   [Morrison, Jonathan J.] Royal Ctr Def Med, Acad Dept Mil Surg & Trauma, Birmingham B15 2SQ, W Midlands, England.
   [Rasmussen, Todd E.] USAF, Med Serv, Sci & Technol Sect, Lackland AFB, TX 78236 USA.
   [Rasmussen, Todd E.] Uniformed Serv Univ Hlth Sci, Norman M Rich Dept Surg, Bethesda, MD 20814 USA.
RP Rasmussen, TE (reprint author), USA, Inst Surg Res, 3400 Rawley E Chambers Ave,Suite B, Ft Sam Houston, TX 78234 USA.
EM todd.rasmussen@amedd.army.mil
NR 49
TC 36
Z9 36
U1 0
U2 5
PU W B SAUNDERS CO-ELSEVIER INC
PI PHILADELPHIA
PA 1600 JOHN F KENNEDY BOULEVARD, STE 1800, PHILADELPHIA, PA 19103-2899 USA
SN 0039-6109
J9 SURG CLIN N AM
JI Surg. Clin.-North Am.
PD AUG
PY 2012
VL 92
IS 4
BP 843
EP +
DI 10.1016/j.suc.2012.05.002
PG 17
WC Surgery
SC Surgery
GA 000IE
UT WOS:000308379100005
PM 22850150
ER

PT J
AU Bailey, J
   Trexler, S
   Murdock, A
   Hoyt, D
AF Bailey, Jeffrey
   Trexler, Scott
   Murdock, Alan
   Hoyt, David
TI Verification and Regionalization of Trauma Systems The Impact of These
   Efforts on Trauma Care in the United States
SO SURGICAL CLINICS OF NORTH AMERICA
LA English
DT Article
DE Trauma systems; Verification; Regionalization
ID INJURED PATIENTS; MAJOR TRAUMA; MORTALITY-RATE; FIELD TRIAGE; LEVEL I;
   OUTCOMES; CENTERS; GUIDELINES; US
AB Efforts to develop trauma systems in the United States followed the publication of the landmark article, "Accidental Death and Disability: The Neglected Disease of Modern Society," by the National Academy of Sciences (1966) and have resulted in the implementation of a system of care for the seriously injured in most states and within the US military. In 2007, Hoyt and Coimbra published an article detailing the history, organization, and future directions of trauma systems within the United States. This article provides an update of the developments that have occurred in trauma systems in system verification and regionalization.
C1 [Bailey, Jeffrey] USA, Inst Surg Res, Ft Sam Houston, TX 78234 USA.
   [Trexler, Scott] San Antonio Mil Med Ctr, Dept Surg, Ft Sam Houston, TX USA.
   [Murdock, Alan] USAF, Med Serv, Pittsburgh, PA USA.
   [Murdock, Alan] Univ Pittsburgh, Pittsburgh, PA USA.
   [Hoyt, David] Amer Coll Surg, Dept Surg, Chicago, IL USA.
RP Bailey, J (reprint author), USA, Inst Surg Res, 3611 Chambers Pass,Bldg 3611, Ft Sam Houston, TX 78234 USA.
EM Jeffrey.a.bailey3@amedd.army.mil
NR 52
TC 13
Z9 13
U1 1
U2 4
PU W B SAUNDERS CO-ELSEVIER INC
PI PHILADELPHIA
PA 1600 JOHN F KENNEDY BOULEVARD, STE 1800, PHILADELPHIA, PA 19103-2899 USA
SN 0039-6109
J9 SURG CLIN N AM
JI Surg. Clin.-North Am.
PD AUG
PY 2012
VL 92
IS 4
BP 1009
EP +
DI 10.1016/j.suc.2012.04.008
PG 18
WC Surgery
SC Surgery
GA 000IE
UT WOS:000308379100014
PM 22850159
ER

PT J
AU Woo, MH
   Grippin, A
   Anwar, D
   Smith, T
   Wu, CY
   Wander, JD
AF Woo, Myung-Heui
   Grippin, Adam
   Anwar, Diandra
   Smith, Tamara
   Wu, Chang-Yu
   Wander, Joseph D.
TI Effects of Relative Humidity and Spraying Medium on UV Decontamination
   of Filters Loaded with Viral Aerosols
SO APPLIED AND ENVIRONMENTAL MICROBIOLOGY
LA English
DT Article
ID ULTRAVIOLET GERMICIDAL IRRADIATION; VIRUS; BACTERIOPHAGE; BIOTERRORISM;
   DISINFECTION; INACTIVATION; LIGHT; MS2
AB Although respirators and filters are designed to prevent the spread of pathogenic aerosols, a stockpile shortage is anticipated during the next flu pandemic. Contact transfer and reaerosolization of collected microbes from used respirators are also a concern. An option to address these potential problems is UV irradiation, which inactivates microbes by dimerizing thymine/uracil in nucleic acids. The objective of this study was to determine the effects of transmission mode and environmental conditions on decontamination efficiency by UV. In this study, filters were contaminated by different transmission pathways (droplet and aerosol) using three spraying media (deionized water [DI], beef extract [BE], and artificial saliva [AS]) under different humidity levels (30% [low relative humidity {LRH}], 60% [MRH], and 90% [HRH]). UV irradiation at constant intensity was applied for two time intervals at each relative humidity condition. The highest inactivation efficiency (IE), around 5.8 logs, was seen for DI aerosols containing MS2 on filters at LRH after applying a UV intensity of 1.0 mW/cm(2) for 30 min. The IE of droplets containing MS2 was lower than that of aerosols containing MS2. Absorption of UV by high water content and shielding of viruses near the center of the aggregate are considered responsible for this trend. Across the different media, IEs in AS and in BE were much lower than in DI for both aerosol and droplet transmission, indicating that solids present in AS and BE exhibited a protective effect. For particles sprayed in a protective medium, RH is not a significant parameter.
C1 [Woo, Myung-Heui; Smith, Tamara; Wu, Chang-Yu] Univ Florida, Dept Environm Engn Sci, Gainesville, FL 32611 USA.
   [Grippin, Adam; Anwar, Diandra] Univ Florida, Dept Chem Engn, Gainesville, FL 32611 USA.
   [Wander, Joseph D.] USAF, Res Lab, Tyndall AFB, FL USA.
RP Wu, CY (reprint author), Univ Florida, Dept Environm Engn Sci, Gainesville, FL 32611 USA.
EM cywu@ufl.edu
FU Air Force Research Laboratory [FA 8650-06-C-5913]; HHMI Science for Life
   Program at the University of Florida
FX This research was supported by the Air Force Research Laboratory through
   grant FA 8650-06-C-5913. Myung-Heui Woo and Adam Grippin acknowledge an
   Alumni Scholarship and Undergraduate Research Scholarship supported by
   the HHMI Science for Life Program, respectively, at the University of
   Florida.
NR 34
TC 7
Z9 7
U1 0
U2 15
PU AMER SOC MICROBIOLOGY
PI WASHINGTON
PA 1752 N ST NW, WASHINGTON, DC 20036-2904 USA
SN 0099-2240
EI 1098-5336
J9 APPL ENVIRON MICROB
JI Appl. Environ. Microbiol.
PD AUG
PY 2012
VL 78
IS 16
BP 5781
EP 5787
DI 10.1128/AEM.00465-12
PG 7
WC Biotechnology & Applied Microbiology; Microbiology
SC Biotechnology & Applied Microbiology; Microbiology
GA 983SR
UT WOS:000307139500037
PM 22685135
ER

PT J
AU Wood, H
   Mardahl, P
   French, D
   Hoff, B
   Hendricks, K
AF Wood, Haynes
   Mardahl, Peter
   French, David
   Hoff, Brad
   Hendricks, Kyle
TI Controllable Axial Overmoding in an MDO
SO IEEE TRANSACTIONS ON PLASMA SCIENCE
LA English
DT Article
DE Diffraction output; multiple modes; pi modes; relativistic magnetron
ID MAGNETRON
AB During a computational investigation of a magnetron utilizing a diffraction output, it was discovered that axial overmoding allowed more than one pi mode to exist. Further investigation led to the identification of at least four distinct pi modes, each with its own frequency and associated 2 pi/3 and 4 pi/3 modes, each accessible by appropriate choices of voltage and magnetic field. This result indicates that a discretely tunable GW class device is conceivable.
C1 [Wood, Haynes; Mardahl, Peter; French, David; Hoff, Brad; Hendricks, Kyle] USAF, Res Lab, Albuquerque, NM 87117 USA.
RP Wood, H (reprint author), USAF, Res Lab, Albuquerque, NM 87117 USA.
EM haynes.wood@kirtland.af.mil; peter.mardahl@kirtland.af.mil;
   david.french@kirtland.af.mil; brad.hoff@kirtland.af.mil;
   kyle.hendricks@kirtland.af.mil
FU U.S. Air Force; Air Force Research Laboratory; DOD
FX This work was supported in part by the U.S. Air Force and the Air Force
   Research Laboratory and in part by the DOD High Performance Computer
   Modernization Program.
NR 11
TC 0
Z9 0
U1 0
U2 5
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 0093-3813
J9 IEEE T PLASMA SCI
JI IEEE Trans. Plasma Sci.
PD AUG
PY 2012
VL 40
IS 8
BP 2094
EP 2098
DI 10.1109/TPS.2012.2199137
PG 5
WC Physics, Fluids & Plasmas
SC Physics
GA 992UW
UT WOS:000307806400020
ER

PT J
AU LaCivita, K
AF LaCivita, Ken
TI Acceptance Use of Digital Radiography for Final Part Acceptance of
   Aerospace Castings
SO MATERIALS EVALUATION
LA English
DT Article
C1 USAF, Tech Monitor MAI PCC Program 1, Res Lab, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA.
RP LaCivita, K (reprint author), USAF, Tech Monitor MAI PCC Program 1, Res Lab, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA.
NR 20
TC 1
Z9 1
U1 0
U2 2
PU AMER SOC NONDESTRUCTIVE TEST
PI COLUMBUS
PA 1711 ARLINGATE LANE PO BOX 28518, COLUMBUS, OH 43228-0518 USA
SN 0025-5327
J9 MATER EVAL
JI Mater. Eval.
PD AUG
PY 2012
VL 70
IS 8
BP 914
EP 922
PG 9
WC Materials Science, Characterization & Testing
SC Materials Science
GA 992SY
UT WOS:000307801200002
ER

PT J
AU LaCivita, K
   Ewert, U
AF LaCivita, Ken
   Ewert, Uwe
TI EPS Approach Equivalent Penetrameter Sensitivity as Applied to Computed
   Radiography
SO MATERIALS EVALUATION
LA English
DT Article
C1 [LaCivita, Ken] USAF, Res Lab, Mat & Mfg Directorate, Syst Support Div, Wright Patterson AFB, OH 45433 USA.
   [Ewert, Uwe] Fed Inst Mat Res & Testing, Radiol Methods Div, D-12205 Berlin, Germany.
RP LaCivita, K (reprint author), USAF, Res Lab, Mat & Mfg Directorate, Syst Support Div, Wright Patterson AFB, OH 45433 USA.
NR 19
TC 0
Z9 0
U1 0
U2 1
PU AMER SOC NONDESTRUCTIVE TEST
PI COLUMBUS
PA 1711 ARLINGATE LANE PO BOX 28518, COLUMBUS, OH 43228-0518 USA
SN 0025-5327
J9 MATER EVAL
JI Mater. Eval.
PD AUG
PY 2012
VL 70
IS 8
BP 925
EP 930
PG 6
WC Materials Science, Characterization & Testing
SC Materials Science
GA 992SY
UT WOS:000307801200003
ER

PT J
AU Lipke, DW
   Hoffman, WP
AF Lipke, David W.
   Hoffman, Wesley P.
TI Oxidation protection above 1,800 degrees C
SO AMERICAN CERAMIC SOCIETY BULLETIN
LA English
DT Editorial Material
C1 [Hoffman, Wesley P.] Amer Carbon Soc, Edwards AFB, CA USA.
   [Hoffman, Wesley P.] AF Res Lab, High Temp Components Grp, Edwards AFB, CA USA.
NR 4
TC 0
Z9 0
U1 1
U2 5
PU AMER CERAMIC SOC
PI WESTERVILLE
PA 600 N CLEVELAND AVE, WESTERVILLE, OH 43082 USA
SN 0002-7812
J9 AM CERAM SOC BULL
JI Am. Ceram. Soc. Bull.
PD AUG
PY 2012
VL 91
IS 6
BP 39
EP 39
PG 1
WC Materials Science, Ceramics
SC Materials Science
GA 986CE
UT WOS:000307316900019
ER

PT J
AU Sebeny, PJ
   Nakhla, I
   Moustafa, M
   Bruton, JA
   Cline, J
   Hawk, D
   El-Mohammady, H
   Nada, RA
   Ahmed, SF
   Pimentel, G
   Young, SYN
AF Sebeny, Peter J.
   Nakhla, Isabelle
   Moustafa, Manal
   Bruton, Jody A.
   Cline, Joanne
   Hawk, Douglas
   El-Mohammady, Hanan
   Nada, Rania A.
   Ahmed, Salwa F.
   Pimentel, Guillermo
   Young, Sylvia Y. N.
TI Hotel Clinic-Based Diarrheal and Respiratory Disease Surveillance in US
   Service Members Participating in Operation Bright Star in Egypt, 2009
SO AMERICAN JOURNAL OF TROPICAL MEDICINE AND HYGIENE
LA English
DT Article
ID ENTEROTOXIGENIC ESCHERICHIA-COLI; SELF-REPORTED INCIDENCE; MILITARY
   PERSONNEL; TRAVELERS DIARRHEA; NONBATTLE INJURY; ENDURING FREEDOM;
   NORTHERN EGYPT; IRAQI FREEDOM; ILLNESS; IMPACT
AB We conducted clinic-based, influenza-like illness and diarrheal disease surveillance among U.S. service members participating in Operation Bright Star 2009. Epidemiologic data and samples were collected. Nasopharyngeal swab specimens were tested for viruses, and feces was tested for inicrobiologic, immunologic, and molecular diagnostics. A survey was used to collect self-reported data. From 1,529 surveys, 41% reported diarrheal disease and 25% reported respiratory illness (incidence rate = 62 of 100 versus 37 of 100 person-months; incidence rate ratio = 1.7, 95% confidence interval = 1.5-1.9). Enterotoxigenic Escherichia coli was identified in 74% (69 of 93) of fecal samples. In the influenza-like illness case series, 17% (9 of 52) were positive for influenza A; all were positive for pandemic (pH1N1) 2009 virus. Rates of decreased work performance reported by patients with diarrhea and influenza-like illness were similar (46% versus 48%; P = 0.8). Diarrheal diseases and respiratory illness remain common among deployed military personnel, with important operational impact. Despite an ongoing influenza pandemic, diarrheal disease incidence was higher than that of respiratory illness.
C1 [Sebeny, Peter J.] USN, Med Res Ctr, Infect Dis Directorate, Silver Spring, MD 20910 USA.
   [Sebeny, Peter J.; Nakhla, Isabelle; Moustafa, Manal; El-Mohammady, Hanan; Nada, Rania A.; Ahmed, Salwa F.] USN, Med Res Unit 3, Cairo, Egypt.
   [Cline, Joanne] US Special Operat Command, Macdill AFB, FL USA.
   [Hawk, Douglas; Pimentel, Guillermo] USN, Environm Prevent Med Unit 6, Joint Base Pearl Harbor, HI USA.
RP Sebeny, PJ (reprint author), USN, Med Res Ctr, Infect Dis Directorate, 3A34,503 Robert Grant Ave, Silver Spring, MD 20910 USA.
EM peter.sebeny@med.navy.mil; isabelle.nakhla.eg@med.navy.mil;
   manal.moustafa.eg@med.navy.mil; jodybruton@hotmail.com;
   joanne.cline@socom.mil; douglas.hawk@med.navy.mil;
   hanan.elmohammady.eg@med.navy.mil; raniaabdelkhalek.eg@med.navy.mil;
   salwa.fouad.eg@med.navy.mil; guillermo.pimentel@med.navy.mil;
   sylvia.young@med.navy.mil
RI Valle, Ruben/A-7512-2013; 
OI Pimentel, Guillermo/0000-0003-2464-1526
FU AFHSC; GEIS OPS;  [847705.82000.25GB.E0018]
FX This study was supported by AFHSC, GEIS OPS, work unit # "GS-47", and
   the study protocol NAMRU3.2005.0012 (IRB No.181) was supported under
   work unit number 847705.82000.25GB.E0018.
NR 34
TC 3
Z9 3
U1 0
U2 2
PU AMER SOC TROP MED & HYGIENE
PI MCLEAN
PA 8000 WESTPARK DR, STE 130, MCLEAN, VA 22101 USA
SN 0002-9637
EI 1476-1645
J9 AM J TROP MED HYG
JI Am. J. Trop. Med. Hyg.
PD AUG
PY 2012
VL 87
IS 2
BP 312
EP 318
DI 10.4269/ajtmh.2012.11-0318
PG 7
WC Public, Environmental & Occupational Health; Tropical Medicine
SC Public, Environmental & Occupational Health; Tropical Medicine
GA 984QA
UT WOS:000307204900021
PM 22855764
ER

PT J
AU Cao, YC
   Ren, W
   Egerstedt, M
AF Cao, Yongcan
   Ren, Wei
   Egerstedt, Magnus
TI Distributed containment control with multiple stationary or dynamic
   leaders in fixed and switching directed networks
SO AUTOMATICA
LA English
DT Article
DE Containment control; Multi-agent systems; Cooperative control; Consensus
ID MOBILE AUTONOMOUS AGENTS; COOPERATIVE CONTROL; CONSENSUS; SYSTEMS;
   STABILITY; TOPOLOGY
AB In this paper, we study the problem of distributed containment control of a group of mobile autonomous agents with multiple stationary or dynamic leaders under both fixed and switching directed network topologies. First, when the leaders are stationary and all followers share an inertial coordinate frame, we present necessary and sufficient conditions on the fixed or switching directed network topology such that all followers will ultimately converge to the stationary convex hull formed by the stationary leaders for arbitrary initial states in a space of any finite dimension. When the directed network topology is fixed, we partition the (nonsymmetric) Laplacian matrix and explore its properties to derive the convergence results. When the directed network topology is switching, the commonly adopted decoupling technique based on the Kronecker product in a high-dimensional space can no longer be applied and we hence present an important coordinate transformation technique to derive the convergence results. The proposed coordinate transformation technique also has potential applications in other high-dimensional distributed control scenarios and might be used to simplify the analysis of a high-dimensional system to that of a one-dimensional system when the decoupling technique based on the Kronecker product cannot be applied. Second, when the leaders are dynamic and all followers share an inertial coordinate frame, we propose a distributed tracking control algorithm without velocity measurements. When the directed network topology is fixed, we derive conditions on the network topology and the control gain to guarantee that all followers will ultimately converge to the dynamic convex hull formed by the dynamic leaders for arbitrary initial states in a space of any finite dimension. When the directed network topology is switching, we derive conditions on the network topology and the control gain such that all followers will ultimately converge to the minimal hyperrectangle that contains the dynamic leaders and each of its hyperplanes is normal to one axis of the inertial coordinate frame in any high-dimensional space. We also show via some counterexamples that it is, in general, impossible to find distribute containment control algorithms without velocity measurements to guarantee that all followers will ultimately converge to the convex hull formed by the dynamic leaders under a switching network topology in a high-dimensional space. Simulation results are presented as a proof of concept. (C) 2012 Elsevier Ltd. All rights reserved.
C1 [Cao, Yongcan; Ren, Wei] Univ Calif Riverside, Dept Elect Engn, Riverside, CA 92521 USA.
   [Egerstedt, Magnus] Georgia Inst Technol, Sch Elect & Comp Engn, Atlanta, GA 30332 USA.
   [Cao, Yongcan] USAF, Control Sci Ctr Excellence, Res Lab, Wright Patterson AFB, OH 45433 USA.
RP Cao, YC (reprint author), Univ Calif Riverside, Dept Elect Engn, Riverside, CA 92521 USA.
EM ycao@ee.ucr.edu; ren@ee.ucr.edu; magnus@ece.gatech.edu
RI Ren, Wei/G-7369-2011; 
OI Ren, Wei/0000-0002-2818-9752; Cao, Yongcan/0000-0003-3383-0185
FU National Science Foundation [ECCS-1213295]; MURI HUNT from the Office of
   Naval Research
FX This work was supported by the National Science Foundation under grant
   ECCS-1213295 and the MURI HUNT from the Office of Naval Research. The
   material in this paper was partially presented at the 49th IEEE
   Conference on Decision and Control (CDC 2009), December 16-18, 2009,
   Shanghai, China. This paper was recommended for publication in revised
   form by Associate Editor Zhihua Qu under the direction of Editor Andrew
   R. Teel.
NR 27
TC 128
Z9 134
U1 8
U2 49
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0005-1098
J9 AUTOMATICA
JI Automatica
PD AUG
PY 2012
VL 48
IS 8
BP 1586
EP 1597
DI 10.1016/j.automatica.2012.05.071
PG 12
WC Automation & Control Systems; Engineering, Electrical & Electronic
SC Automation & Control Systems; Engineering
GA 991FZ
UT WOS:000307688200010
ER

PT J
AU Baker, GE
   Stevens, JL
   Xu, HM
AF Baker, G. Eli
   Stevens, Jeffry L.
   Xu, Heming
TI Explosion Shear-Wave Generation in High-Velocity Source Media
SO BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA
LA English
DT Article
ID UNDERGROUND NUCLEAR-EXPLOSIONS; NEVADA TEST-SITE; TELESEISMIC-P-CODA;
   LG-WAVES; EAST KAZAKHSTAN; SPECTRAL RATIOS; RG SCATTERING; YIELD;
   DISCRIMINANT; 3-COMPONENT
AB We evaluate the mechanisms responsible for generation of shear waves by explosions in high-velocity source media by identifying, quantifying, and modeling observations that can distinguish between commonly suggested mechanisms. We review the literature to identify regional observations that have been or can be used to distinguish between two or more mechanisms. We supplement these historical observations with new measurements of the Semipalatinsk test site (STS) event Lg and P amplitudes at Borovoye and model the observations with nonlinear source models, Rg-to-Lg upper bound calculations, and wavenumber integration synthetic seismograms for point explosions and CLVDs. Direct generation of shear waves by the nonspherical component of the source volume is consistent with the regional Lg amplitude versus yield relationship, while S* and Rg-to-Lg scattering are not. We also analyze and model a large set of Degelen explosion records from approximately 10 to 90 km. The local Sg spectral corner frequency is lower than the Pg corner frequency by approximately the source P-to-S velocity ratio, which is consistent with shear waves directly generated by the source, and inconsistent with Sg being the result of pS, S*, or Rg-to-Lg scattering. The local Sg and Rg spectra are distinctly different. Taken together, results from previous work and new observations presented here support the conclusion that explosions in high-velocity source media dominantly generate shear waves directly, through the nonspherical part of the nonlinearly deforming source volume.
C1 [Baker, G. Eli] USAF, Res Lab, RVBYE, Kirtland AFB, NM 87117 USA.
   [Stevens, Jeffry L.] Sci Applicat Int Corp, San Diego, CA 92121 USA.
   [Xu, Heming] Lawrence Livermore Natl Lab, Div Energy, Livermore, CA 94550 USA.
RP Baker, GE (reprint author), USAF, Res Lab, RVBYE, 3550 Aberdeen St NE, Kirtland AFB, NM 87117 USA.
RI Xu, Heming/H-6286-2012
FU Air Force Research Laboratory, Air Force Materiel Command
   [AFRL-VS-HA-TR-2007-0000]; Air Force Materiel Command
   [AFRL-VS-HA-TR-2007-0000]
FX Seismic records used in this work were delivered by Science Applications
   International Corporation to the Electronic Systems Center, Air Force
   Materiel Command under Contract No. AFRL-VS-HA-TR-2007-0000 for use by
   the monitoring community as described by Stevens et al. (2007). The data
   may be obtained by request from the author.; This work was supported by
   the Air Force Research Laboratory, Air Force Materiel Command contract
   number AFRL-VS-HA-TR-2007-0000.
NR 70
TC 4
Z9 4
U1 0
U2 3
PU SEISMOLOGICAL SOC AMER
PI EL CERRITO
PA PLAZA PROFESSIONAL BLDG, SUITE 201, EL CERRITO, CA 94530 USA
SN 0037-1106
J9 B SEISMOL SOC AM
JI Bull. Seismol. Soc. Amer.
PD AUG
PY 2012
VL 102
IS 4
BP 1301
EP 1319
DI 10.1785/0120110119
PG 19
WC Geochemistry & Geophysics
SC Geochemistry & Geophysics
GA 985OU
UT WOS:000307277100002
ER

PT J
AU Baker, GE
   Stevens, JL
   Xu, HM
AF Baker, G. Eli
   Stevens, Jeffry L.
   Xu, Heming
TI Explosion Shear-Wave Generation in Low-Velocity Source Media
SO BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA
LA English
DT Article
ID UNDERGROUND NUCLEAR-EXPLOSIONS; SPECTRAL RATIOS; TELESEISMIC-P; EAST
   KAZAKH; TEST SITES; LG; DISCRIMINANT; NTS; RG; SCATTERING
AB This paper investigates which mechanism of Lg generation dominates in low-velocity source media, which is important because of the central role of Lg in discrimination and yield estimation of nuclear explosions. The mechanisms investigated are surface P-to-S conversion (pS), generation directly by the nonspherical component of the explosion source volume, and Rg-to-S scattering. We identify and quantify observations that distinguish between mechanisms. We also specifically test the assumptions of previous work that concluded that Rg scattering is the dominant mechanism. To do so, we analyze and simulate records of adjacent, normally buried and overburied Nevada test site (NTS) explosions, and analyze deep seismic sounding (DSS) explosion Quartz 3 data. The data analyses and simulations consistently indicate that pS is the dominant source of explosion Lg in low-velocity source media, that nonspherical source components could also contribute significantly to Lg, and that scattered Rg contributes less, except possibly at very low frequencies. For NTS overburied versus normally buried explosions, we compare Lg-to-Pg spectral ratios, corner frequencies, and tangential versus vertical and radial Lg spectral nulls. We perform simulations for the NTS to compare the contributions to Lg of pS, direct S from a CLVD, and scattered Rg. Quartz 3 data show that Rg spectral nulls vary with azimuth and differ from corresponding Sg and Lg spectral nulls, counter to assumptions required by the Rg scattering hypothesis.
C1 [Baker, G. Eli] USAF, Res Lab, RVBYE, Kirtland AFB, NM 87117 USA.
   [Stevens, Jeffry L.] Sci Applicat Int Corp, San Diego, CA 92121 USA.
   [Xu, Heming] Lawrence Livermore Natl Lab, Comp Applicat & Res Dept, Computat Directorate, Livermore, CA 94551 USA.
RP Baker, GE (reprint author), USAF, Res Lab, RVBYE, 3550 Aberdeen St NE, Kirtland AFB, NM 87117 USA.
RI Xu, Heming/H-6286-2012
FU Force Research Laboratory, Air Force Materiel Command
   [AFRL-VS-HA-TR-2007-0000]; National Science Foundation; GEO Directorate
   through the Instrumentation and Facilities Program of the National
   Science Foundation [EAR-0004370]
FX The facilities of the IRIS Data Management System, and specifically the
   IRIS Data Management Center, were used for access to DSS waveform and
   metadata required in this study. The IRIS DMS is funded through the
   National Science Foundation and specifically the GEO Directorate through
   the Instrumentation and Facilities Program of the National Science
   Foundation under Cooperative Agreement EAR-0004370. NTS explosion
   waveform data used in this study were assembled by Lawrence Livermore
   National Laboratory and are available on CD-ROM upon request (Walter et
   al., 2004).; This work was supported by the Air Force Research
   Laboratory, Air Force Materiel Command contract number
   AFRL-VS-HA-TR-2007-0000. We appreciate the thoughtful reviews provided
   by Chandan Saikia and an anonymous reviewer.
NR 23
TC 4
Z9 4
U1 1
U2 5
PU SEISMOLOGICAL SOC AMER
PI EL CERRITO
PA PLAZA PROFESSIONAL BLDG, SUITE 201, EL CERRITO, CA 94530 USA
SN 0037-1106
J9 B SEISMOL SOC AM
JI Bull. Seismol. Soc. Amer.
PD AUG
PY 2012
VL 102
IS 4
BP 1320
EP 1334
DI 10.1785/0120110165
PG 15
WC Geochemistry & Geophysics
SC Geochemistry & Geophysics
GA 985OU
UT WOS:000307277100003
ER

PT J
AU Hatz, DE
   Danielson, D
   Young, N
   Amsterdam, E
AF Hatz, Daniel Edwdard
   Danielson, Daren
   Young, Nilas
   Amsterdam, Ezra
TI The Impact of Preoperative Imaging for Atypical Atrial Myxoma Locations
SO CLINICAL CARDIOLOGY
LA English
DT Article
AB Background: Atrial myxomas are the most common primary cardiac neoplasm. The majority (75%80%) are located in the left atrium at the base of the foramen ovalis. Surgical removal can prevent dangerous obstructive or thromboembolic sequelae. Hypothesis: Atypically located tumors may present technical challenges requiring case-specific surgical adaptations when visualization or surrounding cardiac structures are compromised. Methods: We describe 3 cases of atypically located atrial myxomas that required preoperative transesophageal echocardiography and computed tomography to afford the optimal surgical approach. Conclusions: These cases highlight the potential need for multimodality imaging of atypically located atrial myxomas to determine the optimal technical approach for excision. Clin. Cardiol. 2012 doi: 10.1002/clc.22027 The authors have no funding, financial relationships, or conflicts of interest to disclose.
C1 [Hatz, Daniel Edwdard; Danielson, Daren; Young, Nilas; Amsterdam, Ezra] Univ Calif Davis, Dept Cardiothorac Surg, Sacramento, CA 95817 USA.
RP Hatz, DE (reprint author), Univ Calif Davis, USAF, Shaw AFB, SC, 625 Batty Way, Sumter, SC 29154 USA.
EM daniel.hatz@shaw.af.mil
NR 8
TC 0
Z9 0
U1 0
U2 1
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 0160-9289
J9 CLIN CARDIOL
JI Clin. Cardiol.
PD AUG
PY 2012
VL 35
IS 8
BP 490
EP 493
DI 10.1002/clc.22027
PG 4
WC Cardiac & Cardiovascular Systems
SC Cardiovascular System & Cardiology
GA 983JV
UT WOS:000307116500007
ER

PT J
AU Berger, M
   Silva, CT
AF Berger, Matthew
   Silva, Claudio T.
TI Nonrigid Matching of Undersampled Shapes via Medial Diffusion
SO COMPUTER GRAPHICS FORUM
LA English
DT Article
ID REGISTRATION; MODELS
AB We introduce medial diffusion for the matching of undersampled shapes undergoing a nonrigid deformation. We construct a diffusion process with respect to the medial axis of a shape, and use the quantity of heat diffusion as a measure which is both tolerant of missing data and approximately invariant to nonrigid deformations. A notable aspect of our approach is that we do not define the diffusion on the shape's medial axis, or similar medial representation. Instead, we construct the diffusion process directly on the shape. This permits the diffusion process to better capture surface features, such as varying spherical and cylindrical parts, as well as combine with other surface-based diffusion processes. We show how to use medial diffusion to detect intrinsic symmetries, and for computing correspondences between pairs of shapes, wherein shapes contain substantial missing data.
C1 [Berger, Matthew] Univ Utah, Salt Lake City, UT 84112 USA.
   [Berger, Matthew] USAF, Res Lab, Informat Directorate, Colorado Springs, CO USA.
   [Silva, Claudio T.] NYU, Polytech Inst, New York, NY 10003 USA.
RP Berger, M (reprint author), Univ Utah, Salt Lake City, UT 84112 USA.
FU National Science Foundation; Department of Energy Office of Science
FX We thank Andrea Tagliasacchi for the skeleton extraction code and Lucas
   Sabalka for the useful feedback. This work was partially funded by the
   National Science Foundation and the Department of Energy Office of
   Science.
NR 37
TC 1
Z9 1
U1 0
U2 3
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 0167-7055
J9 COMPUT GRAPH FORUM
JI Comput. Graph. Forum
PD AUG
PY 2012
VL 31
IS 5
BP 1587
EP 1596
DI 10.1111/j.1467-8659.2012.03164.x
PG 10
WC Computer Science, Software Engineering
SC Computer Science
GA 985YX
UT WOS:000307307500003
ER

PT J
AU Trohalaki, S
   Pachter, R
   Luckarift, HR
   Johnson, GR
AF Trohalaki, S.
   Pachter, R.
   Luckarift, H. R.
   Johnson, G. R.
TI Immobilization of the Laccases from Trametes versicolor and Streptomyces
   coelicolor on Single-wall Carbon Nanotube Electrodes: A Molecular
   Dynamics Study
SO FUEL CELLS
LA English
DT Article
DE Laccase; Molecular Dynamics Simulation; Single-Wall Carbon Nanotubes
ID BIOFUEL CELLS; OXIDASE; ENZYMES
AB In this work, we investigate the immobilization of laccases from Trametes versicolor (TvL) and the small laccase (SLAC) from Streptomyces coelicolor on single-wall carbon nanotube (SWCNT) surfaces. SLAC may potentially offer improved adsorption on the electrode, thus improving bioelectrocatalytic activity via direct electron transfer (DET). Laccase immobilization on SWCNTs is achieved non-covalently with a molecular tether (1-pyrene butanoic acid, succinimidyl ester) that forms an amide bond with an amine group on the laccase surface while the pyrene coordinates to the SWCNT by pp stacking. In our approach, density functional theory calculations were first used to model the interaction energies between SWCNTs and pyrene to validate an empirical force field, thereafter applied in molecular dynamics (MD) simulations. In the simulated models, the SWCNT was placed near the region of the (type 1) Cu(T1) atom in the laccases, and in proximity to other regions where adsorption seems likely. Calculated interaction energies between the SWCNTs and laccases and distances between the SWCNT surface and the Cu(T1) atom have shown that SWCNTs adsorb more strongly to SLAC than to TvL, and that the separation between the SWCNTs and Cu(T1) atoms is smaller for SLAC than for TvL, having implications for improved DET.
C1 [Trohalaki, S.; Pachter, R.] USAF, Mat & Mfg Directorate, Res Lab, Wright Patterson AFB, OH 45324 USA.
   [Trohalaki, S.] Gen Dynam Informat Technol, Dayton, OH 45431 USA.
   [Luckarift, H. R.; Johnson, G. R.] USAF, Mat & Mfg Directorate, Res Lab, Tyndall AFB, FL 32403 USA.
   [Luckarift, H. R.] Universal Technol Corp, Dayton, OH 45432 USA.
RP Trohalaki, S (reprint author), USAF, Mat & Mfg Directorate, Res Lab, Wright Patterson AFB, OH 45324 USA.
EM steven.trohalaki.ctr@wpafb.af.mil; ruth.pachter@wpafb.af.mil
FU Air Force Office of Scientific Research
FX We gratefully acknowledge support from the Air Force Office of
   Scientific Research. Calculations were performed with facilities
   provided by the Air Force Research Laboratory, Department of Defense
   Supercomputing Resource Center at Wright-Patterson Air Force Base.
NR 31
TC 9
Z9 9
U1 3
U2 38
PU WILEY-V C H VERLAG GMBH
PI WEINHEIM
PA BOSCHSTRASSE 12, D-69469 WEINHEIM, GERMANY
SN 1615-6846
J9 FUEL CELLS
JI Fuel Cells
PD AUG
PY 2012
VL 12
IS 4
BP 656
EP 664
DI 10.1002/fuce.201200043
PG 9
WC Electrochemistry; Energy & Fuels
SC Electrochemistry; Energy & Fuels
GA 988OC
UT WOS:000307499400022
ER

PT J
AU Klein, MI
   Warm, JS
   Riley, MA
   Matthews, G
   Doarn, C
   Donovan, JF
   Gaitonde, K
AF Klein, Martina I.
   Warm, Joel S.
   Riley, Michael A.
   Matthews, Gerald
   Doarn, Charles
   Donovan, James F.
   Gaitonde, Krishnanath
TI Mental Workload and Stress Perceived by Novice Operators in the
   Laparoscopic and Robotic Minimally Invasive Surgical Interfaces
SO JOURNAL OF ENDOUROLOGY
LA English
DT Article
ID PERFORMANCE; SURGERY; SKILLS; ACQUISITION; SIMULATOR
AB Background and Purpose: High levels of mental workload and stress are experienced by surgeons in the laparoscopic environment. The da Vinci (R) surgical robot was developed to provide surgeons a more user-friendly interface while maintaining the patient benefits associated with laparoscopy. This study examined whether the da Vinci robot reduces mental workload and stress in novice medical students. A detailed understanding of trainees' mental workload and mental stress experiences can aid in the development of training programs that are aimed at facilitating the acquisition of laparoscopic and robotic surgery skills.
   Materials and Methods: Fifteen novice first-year medical students performed a standard peg-transfer task at a laparoscopic simulator and the da Vinci Surgical System. Mental workload and stress were assessed with the Multiple Resources Questionnaire (MRQ) and the Dundee Stress State Questionnaire (DSSQ), respectively.
   Results: Students' mental workload profiles were identical with the two surgical systems and replicated previous MRQ results reported with the laparoscopic system showing high levels of workload. Students experienced a better stress profile with the robotic system, however, when compared wih the laparoscopic system.
   Conclusion: Our study shows that novice medical students perceive less stress when working with the robotic surgical interface than with the laparoscopic surgery interface. The MRQ and the DSSQ are valuable tools for identifying mental workload and mental stress in the laparoscopic and robotic surgery environments. This information may be useful for facilitating the acquisition of laparoscopic and robotic surgery skills.
C1 [Klein, Martina I.] Texas Tech Univ, Dept Psychol, Lubbock, TX 79409 USA.
   [Warm, Joel S.] Wright Patterson AFB, AF Res Lab, Dayton, OH USA.
   [Riley, Michael A.; Matthews, Gerald] Univ Cincinnati, Dept Psychol, Cincinnati, OH 45221 USA.
   [Doarn, Charles] Univ Cincinnati, Dept Family & Community Med, Cincinnati, OH USA.
   [Donovan, James F.; Gaitonde, Krishnanath] Univ Cincinnati, Dept Urol, Cincinnati, OH USA.
RP Klein, MI (reprint author), Texas Tech Univ, Dept Psychol, MS2051, Lubbock, TX 79409 USA.
EM martina.i.klein@ttu.edu
FU University of Cincinnati Research Council
FX This study was supported by a grant awarded by the University of
   Cincinnati Research Council to Michael A. Riley, Ph.D.
NR 33
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Z9 10
U1 4
U2 13
PU MARY ANN LIEBERT INC
PI NEW ROCHELLE
PA 140 HUGUENOT STREET, 3RD FL, NEW ROCHELLE, NY 10801 USA
SN 0892-7790
J9 J ENDOUROL
JI J. Endourol.
PD AUG
PY 2012
VL 26
IS 8
BP 1089
EP 1094
DI 10.1089/end.2011.0641
PG 6
WC Urology & Nephrology
SC Urology & Nephrology
GA 988UF
UT WOS:000307515500028
PM 22429084
ER

PT J
AU Ghommem, M
   Hajj, MR
   Mook, DT
   Stanford, BK
   Beran, PS
   Snyder, RD
   Watson, LT
AF Ghommem, Mehdi
   Hajj, Muhammad R.
   Mook, Dean T.
   Stanford, Bret K.
   Beran, Philip S.
   Snyder, Richard D.
   Watson, Layne T.
TI Global optimization of actively morphing flapping wings
SO JOURNAL OF FLUIDS AND STRUCTURES
LA English
DT Article
DE Unsteady vortex lattice method; Flapping wings; Global optimization
ID VORTEX-LATTICE METHOD; MICRO AIR VEHICLES; FLIGHT; MODEL; AIRFOIL;
   AERODYNAMICS; SIMULATIONS; FLEXIBILITY; PROPULSION; KINEMATICS
AB We consider active shape morphing to optimize the flight performance of flapping wings. To this end, we combine a three-dimensional version of the unsteady vortex lattice method (UVLM) with a deterministic global optimization algorithm to identify the optimal kinematics that maximize the propulsive efficiency under lift and thrust constraints. The UVLM applies only to incompressible, inviscid flows where the separation lines are known a priori. Two types of morphing parameterization are investigated here-trigonometric and spline-based. The results show that the spline-based morphing, which requires specification of more design variables, yields a significant improvement in terms of propulsive efficiency. Furthermore, we remark that the average value of the lift coefficient in the optimized kinematics remained equal to the value in the baseline case (without morphing). This indicates that morphing is most efficiently used to generate thrust and not to increase lift beyond the basic value obtained by flapping only. Besides, our study gives comparable optimal efficiencies to those obtained from previous studies based on gradient-based optimization, but completely different design points (especially for the spline-based morphing), which would indicate that the design space associated with the flapping kinematics is very complex. (C) 2012 Elsevier Ltd. All rights reserved.
C1 [Ghommem, Mehdi; Hajj, Muhammad R.; Mook, Dean T.] Virginia Polytech Inst & State Univ, Dept Engn Sci & Mech, Blacksburg, VA 24061 USA.
   [Stanford, Bret K.; Beran, Philip S.; Snyder, Richard D.] USAF, Res Lab, Wright Patterson AFB, OH 45433 USA.
   [Watson, Layne T.] Virginia Polytech Inst & State Univ, Dept Comp Sci, Blacksburg, VA 24061 USA.
   [Watson, Layne T.] Virginia Polytech Inst & State Univ, Dept Math, Blacksburg, VA 24061 USA.
RP Hajj, MR (reprint author), Virginia Polytech Inst & State Univ, Dept Engn Sci & Mech, 223A Norris Hall,MC 0219, Blacksburg, VA 24061 USA.
EM mhajj@vt.edu
RI Hajj, Muhammad/A-1176-2010
FU Air Force Research Laboratory [FA 8650-09-02-3938]
FX Support of the Air Force Research Laboratory under Contract FA
   8650-09-02-3938 is acknowledged. This work has been approved for public
   release; distribution unlimited per 88 ABW-2011-3006.
NR 39
TC 21
Z9 21
U1 2
U2 26
PU ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
PI LONDON
PA 24-28 OVAL RD, LONDON NW1 7DX, ENGLAND
SN 0889-9746
J9 J FLUID STRUCT
JI J. Fluids Struct.
PD AUG
PY 2012
VL 33
BP 210
EP 228
DI 10.1016/j.jfluidstructs.2012.04.013
PG 19
WC Engineering, Mechanical; Mechanics
SC Engineering; Mechanics
GA 987JN
UT WOS:000307413200012
ER

PT J
AU Ryan, KL
   Blackbourne, LH
   Cancio, LC
   Dunn, WJ
   Jordan, BS
   McClinton, AR
   Nelson, BS
   Rathbone, CR
   Ross, JD
   Kragh, JF
AF Ryan, Kathy L.
   Blackbourne, Lorne H.
   Cancio, Leopoldo C.
   Dunn, William J.
   Jordan, Bryan S.
   McClinton, Annette R.
   Nelson, Betty S.
   Rathbone, Christopher R.
   Ross, James D.
   Kragh, John F.
TI The Battlefield Health and Trauma Research Institute Scientific Ethics
   Committee: An evolving model for fostering a culture of integrity
SO JOURNAL OF TRAUMA AND ACUTE CARE SURGERY
LA English
DT Review
DE Responsible conduct of research; ethics
ID RESEARCH MISCONDUCT; RETRACTION
AB "The scientific enterprise is built on a foundation of trust. Society trusts that scientific research results are an honest and accurate reflection of a researcher's work. Researchers equally trust that their colleagues have gathered data carefully, have used appropriate analytic and statistical techniques, have reported their results accurately, and have treated the work of other researchers with respect. When this trust is misplaced and the professional standards of science are violated, researchers are not just personally affronted-they feel that the base of their profession has been undermined. This would impact the relationship between science and society."
C1 [Ryan, Kathy L.; Blackbourne, Lorne H.; Cancio, Leopoldo C.; Jordan, Bryan S.; McClinton, Annette R.; Nelson, Betty S.; Rathbone, Christopher R.; Kragh, John F.] USA, Inst Surg Res, Ft Sam Houston, TX 78234 USA.
   [Dunn, William J.] USAF, Sch Aerosp Med, Detachment 1, Ft Sam Houston, TX USA.
   [Ross, James D.] USN, Med Res Unit San Antonio, Ft Sam Houston, TX USA.
RP Ryan, KL (reprint author), USA, Inst Surg Res, 3698 Chambers Pass, Ft Sam Houston, TX 78234 USA.
EM Kathy.l.ryan@us.army.mil
FU US Army Medical and Materiel Command, Combat Casualty Care Research
   Program
FX Funding was provided by the US Army Medical and Materiel Command, Combat
   Casualty Care Research Program. K.L.G. is a military service member (or
   employee of the US Government). This work was prepared as part of her
   official duties. Title 17 United States Code Section 105 provides that
   "Copyright protection under this title is not available for any work of
   the United States Government." Title 17 United States Code Section 101
   defines a US Government work as a work prepared by a military service
   member or employee of the US Government as part of that person's
   official duties. The opinions or assertions contained herein are the
   private views of the authors and are not to be construed as official or
   as reflecting the views of the Departments of the Army, Air Force or
   Navy, or the Department of Defense.
NR 16
TC 0
Z9 0
U1 1
U2 5
PU LIPPINCOTT WILLIAMS & WILKINS
PI PHILADELPHIA
PA 530 WALNUT ST, PHILADELPHIA, PA 19106-3621 USA
SN 2163-0755
J9 J TRAUMA ACUTE CARE
JI J. Trauma Acute Care Surg.
PD AUG
PY 2012
VL 73
SU 1
BP S3
EP S6
DI 10.1097/TA.0b013e3182605f9e
PG 4
WC Critical Care Medicine; Surgery
SC General & Internal Medicine; Surgery
GA 992VP
UT WOS:000307808500002
PM 22847090
ER

PT J
AU Sampson, CR
   Schumacher, AB
   Knaff, JA
   DeMaria, M
   Fukada, EM
   Sisk, CA
   Roberts, DP
   Winters, KA
   Wilson, HM
AF Sampson, Charles R.
   Schumacher, Andrea B.
   Knaff, John A.
   DeMaria, Mark
   Fukada, Edward M.
   Sisk, Chris A.
   Roberts, David P.
   Winters, Katherine A.
   Wilson, Harold M.
TI Objective Guidance for Use in Setting Tropical Cyclone Conditions of
   Readiness
SO WEATHER AND FORECASTING
LA English
DT Article
ID WIND; FORECASTS
AB The Department of Defense uses a Tropical Cyclone Conditions of Readiness (TC-CORs) system to prepare bases and evacuate assets and personnel in advance of adverse weather associated with tropical cyclones (TCs). TC-CORs are recommended by weather facilities either on base or at central sites and generally are related to the timing and potential for destructive (50 kt; 1 kt approximate to 0.5144 m s(-1)) sustained winds. Recommendations are then considered by base or area commanders along with other factors for setting the TC-CORs. Ideally, the TC-CORs are set sequentially, from TC-COR IV (destructive winds within 72 h), through TC-COR III (destructive winds within 48 h) and TC-COR II (destructive winds within 24 h), and finally to TC-COR I (destructive winds within 12 h), if needed. Each TC-COR, once set, initiates a series of preparations and actions. Preparations for TC-COR IV can be as unobtrusive as obtaining emergency supplies, while preparations and actions leading up to TC-COR I are generally far more costly, intrusive, and labor-intensive activities. The purpose of this paper is to describe an objective aid that provides TC-COR guidance for meteorologists to use when making recommendations to base commanders. The TC-COR guidance is based on wind probability thresholds from an operational wind probability product run at the U.S. tropical cyclone forecast centers. An analysis on 113 independent cases from various bases shows the skill of the objective aid and how well it compares with the operational TC-CORs. A sensitivity analysis is also performed to demonstrate some of the advantages and pitfalls of raising or lowering the wind probability thresholds used by this objective aid.
C1 [Sampson, Charles R.] USN, Res Lab, Monterey, CA 93943 USA.
   [Schumacher, Andrea B.] Colorado State Univ, Cooperat Inst Res Atmosphere, Ft Collins, CO 80523 USA.
   [Knaff, John A.; DeMaria, Mark] NOAA, NESDIS, Reg & Mesoscale Meteorol Branch, Ft Collins, CO USA.
   [Fukada, Edward M.] Joint Typhoon Warning Ctr, Honolulu, HI USA.
   [Sisk, Chris A.; Roberts, David P.] Natl Hurricane Ctr, Miami, FL USA.
   [Winters, Katherine A.] Patrick AFB, Melbourne, FL USA.
   [Wilson, Harold M.] Fleet Weather Ctr, Norfolk, VA USA.
RP Sampson, CR (reprint author), USN, Res Lab, 7 Grace Hopper Ave,Stop 2, Monterey, CA 93943 USA.
EM buck.sampson@nrlmry.navy.mil
RI DeMaria, Mark/F-5583-2010; Knaff, John /F-5599-2010
OI Knaff, John /0000-0003-0427-1409
FU Commander Naval Meteorology and Oceanography Command
FX The authors would like to acknowledge Ann Schrader for her work with the
   ATCF. The authors also wish to acknowledge John Cook, Jim Hansen, Simon
   Chang, Chris Landsea, Scott Stripling, and two anonymous reviewers for
   their comments and suggestions. The authors acknowledge the many people
   (John Okon, Jonathan Leffler, Chris Bridgham, Will Girdler, Brian
   McDonald, Mike McAleenan, and others) at operational military bases who
   supplied information for this study, including Andersen AB, Kadena AB,
   Yokota AB, FWC Norfolk, Yokosuka Naval Station, and Patrick AB. The
   authors also would like to thank Stars and Stripes magazine for their
   diligent efforts in logging Okinawa tropical cyclone passages and the
   Weather Underground (www.wunderground.com) for their extensive archive
   of weather observations. The authors thank the Commander Naval
   Meteorology and Oceanography Command for funding this project, and for
   their patience while awaiting the evaluation results. 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 17
TC 5
Z9 5
U1 0
U2 3
PU AMER METEOROLOGICAL SOC
PI BOSTON
PA 45 BEACON ST, BOSTON, MA 02108-3693 USA
SN 0882-8156
J9 WEATHER FORECAST
JI Weather Forecast.
PD AUG
PY 2012
VL 27
IS 4
BP 1052
EP 1060
DI 10.1175/WAF-D-12-00008.1
PG 9
WC Meteorology & Atmospheric Sciences
SC Meteorology & Atmospheric Sciences
GA 988LT
UT WOS:000307493200015
ER

PT J
AU Stinco, P
   Greco, MS
   Gini, F
   Rangaswamy, M
AF Stinco, P.
   Greco, M. S.
   Gini, F.
   Rangaswamy, M.
TI Ambiguity function and Cramer-Rao bounds for universal mobile
   telecommunications system-based passive coherent location systems
SO IET RADAR SONAR AND NAVIGATION
LA English
DT Article
ID BISTATIC RADAR; PARAMETER-ESTIMATION; GAUSSIAN CLUTTER; SIGNALS
AB The concerns are with the calculation of monostatic and bistatic ambiguity function (AF) of a quadrature phase shift keying (QPSK) signal where the pulses are shaped with a root raised cosine (RRC) filter. The monostatic and bistatic modified Cramer-Rao lower bounds (MCRLBs) for the estimation of target range and velocity are also derived and analysed. The QPSK modulation is used in the downlink of a universal mobile telecommunications system (UMTS) base station, hence the results of our analysis provide a useful tool to asses the performance of a passive coherent location (PCL) system where the non-cooperative transmitter of opportunity is a UMTS base station. The actual growing coverage of UMTS signals on the international territory makes multistatic radar configuration feasible, therefore these results can also be exploited for the dynamical selection of the transmitter in a multistatic radar system where multiple UMTS base stations are used.
C1 [Stinco, P.; Greco, M. S.; Gini, F.] Univ Pisa, Dip Ingn Informaz, I-56122 Pisa, Italy.
   [Rangaswamy, M.] USAF, Res Lab, Wpafp, OH 45433 USA.
RP Stinco, P (reprint author), Univ Pisa, Dip Ingn Informaz, Via G Caruso 16, I-56122 Pisa, Italy.
EM pietro.stinco@iet.unipi.it
RI Stinco, Pietro/N-1362-2015; 
OI Stinco, Pietro/0000-0001-7934-4487; Greco, Maria/0000-0002-3804-2949
FU EOARD, European Office of Aerospace Research and Development [FA
   8655-07-1-3096]
FX This work was supported by EOARD, European Office of Aerospace Research
   and Development under grant FA 8655-07-1-3096. The views and conclusion
   contained herein are those of the author and should not be interpreted
   as necessarily representing the official policies or endorsements,
   either expressed or implied, of the EOARD.
NR 30
TC 27
Z9 29
U1 0
U2 6
PU INST ENGINEERING TECHNOLOGY-IET
PI HERTFORD
PA MICHAEL FARADAY HOUSE SIX HILLS WAY STEVENAGE, HERTFORD SG1 2AY, ENGLAND
SN 1751-8784
J9 IET RADAR SONAR NAV
JI IET Radar Sonar Navig.
PD AUG
PY 2012
VL 6
IS 7
BP 668
EP 678
DI 10.1049/iet-rsn.2011.0390
PG 11
WC Engineering, Electrical & Electronic; Telecommunications
SC Engineering; Telecommunications
GA 978PT
UT WOS:000306758000011
ER

PT J
AU Li, JH
   Shao, XY
   Long, YM
   Zhu, HP
   Schlessman, BR
AF Li Jin-hang
   Shao Xin-yu
   Long Yuan-ming
   Zhu Hai-ping
   Schlessman, B. R.
TI Global optimization by small-world optimization algorithm based on
   social relationship network
SO JOURNAL OF CENTRAL SOUTH UNIVERSITY
LA English
DT Article
DE global optimization; intelligent algorithm; small-world optimization;
   decentralized search
ID PARTICLE SWARM OPTIMIZATION; SEARCH; COLONY; MODEL
AB A fast global convergence algorithm, small-world optimization (SWO), was designed to solve the global optimization problems, which was inspired from small-world theory and six degrees of separation principle in sociology. Firstly, the solution space was organized into a small-world network model based on social relationship network. Secondly, a simple search strategy was adopted to navigate into this network in order to realize the optimization. In SWO, the two operators for searching the short-range contacts and long-range contacts in small-world network were corresponding to the exploitation and exploration, which have been revealed as the common features in many intelligent algorithms. The proposed algorithm was validated via popular benchmark functions and engineering problems. And also the impacts of parameters were studied. The simulation results indicate that because of the small-world theory, it is suitable for heuristic methods to search targets efficiently in this constructed small-world network model. It is not easy for each test mail to fall into a local trap by shifting into two mapping spaces in order to accelerate the convergence speed. Compared with some classical algorithms, SWO is inherited with optimal features and outstanding in convergence speed. Thus, the algorithm can be considered as a good alternative to solve global optimization problems.
C1 [Li Jin-hang; Shao Xin-yu; Long Yuan-ming; Zhu Hai-ping] Huazhong Univ Sci & Technol, Sch Mech Sci & Engn, Wuhan 430074, Peoples R China.
   [Schlessman, B. R.] USAF, Res Lab, Wright Patterson AFB, OH 45433 USA.
RP Li, JH (reprint author), Huazhong Univ Sci & Technol, Sch Mech Sci & Engn, Wuhan 430074, Peoples R China.
EM jinhangli@gmail.com
FU National Natural Science Foundation of China [51105157, 50875101];
   National High Technology Research and Development Program of China
   [2009AA043301]
FX Foundation item: Projects(51105157, 50875101) supported by the National
   Natural Science Foundation of China; Project(2009AA043301) supported by
   the National High Technology Research and Development Program of China
NR 43
TC 3
Z9 3
U1 0
U2 15
PU JOURNAL OF CENTRAL SOUTH UNIV TECHNOLOGY
PI HUNAN
PA EDITORIAL OFFICE, CHANGSHA, HUNAN 410083, PEOPLES R CHINA
SN 2095-2899
J9 J CENT SOUTH UNIV
JI J. Cent. South Univ.
PD AUG
PY 2012
VL 19
IS 8
BP 2247
EP 2265
DI 10.1007/s11771-012-1269-x
PG 19
WC Metallurgy & Metallurgical Engineering
SC Metallurgy & Metallurgical Engineering
GA 986AP
UT WOS:000307312000023
ER

PT J
AU Gupta, P
   Pereira, JP
   Kim, DJ
   Duarte, CA
   Eason, T
AF Gupta, P.
   Pereira, J. P.
   Kim, D. -J.
   Duarte, C. A.
   Eason, T.
TI Analysis of three-dimensional fracture mechanics problems: A
   non-intrusive approach using a generalized finite element method
SO ENGINEERING FRACTURE MECHANICS
LA English
DT Article
DE Generalized finite element method; Fracture mechanics; Global-local
   analysis; Multiscale problem; Schur complement
ID FATIGUE-CRACK PROPAGATION; STRESS-INTENSITY FACTORS; LEVEL SETS;
   ENRICHMENT FUNCTIONS; 2-SCALE APPROACH; MARCHING METHOD; PART I; GROWTH;
   FEM; IMPLEMENTATION
AB This paper shows that the generalized finite element method with global-local enrichment functions (GFEM(gl)) can be implemented non-intrusively in existing closed-source FEM software as an add-on module. The GFEM(gl) is based on the solution of interdependent global (structural) and local (crack) scale problems. In the approach presented here, an initial global scale problem is solved by a commercial finite element analysis software, local problems containing 3-D fractures are solved by an hp-adaptive GFEM software and an enriched global scale problem is solved by a combination of the FEM and GFEM softwares. The interactions between the solvers are limited to the exchange of load and solution vectors and does not require the introduction of user subroutines to existing FEM software. As a results, the user can benefit from built-in features of available commercial grade FEM software while adding the benefits of the GFEM for this class of problems. Several three-dimensional fracture mechanics problems aimed at investigating the applicability and accuracy of the proposed two-solver methodology are presented. (C) 2012 Elsevier Ltd. All rights reserved.
C1 [Gupta, P.; Pereira, J. P.; Duarte, C. A.] Univ Illinois, Dept Civil & Environm Engn, Newmark Lab, Urbana, IL 61801 USA.
   [Kim, D. -J.] Kyung Hee Univ, Dept Architectural Engn, Yongin 446701, Kyunggi Do, South Korea.
   [Eason, T.] USAF, Res Lab, Air Vehicles Directorate, WPAFB, Dayton, OH USA.
RP Duarte, CA (reprint author), Univ Illinois, Dept Civil & Environm Engn, Newmark Lab, 205 N Mathews Ave, Urbana, IL 61801 USA.
EM caduarte@illinois.edu
OI Kim, Dae-Jin/0000-0003-4461-9991
FU US Air Force Research Laboratory Air Vehicles Directorate
   [FA8650-06-2-3620, USAF-0060-50-0001]
FX The authors gratefully acknowledge the contributions of the Midwest
   Structural Sciences Center (MSSC) at the University of Illinois at
   Urbana-Champaign. The Center is supported by the US Air Force Research
   Laboratory Air Vehicles Directorate under contract number
   FA8650-06-2-3620. The support from the US Air Force Research Laboratory
   Air Vehicles Directorate under contract number USAF-0060-50-0001 is also
   gratefully acknowledged.
NR 63
TC 12
Z9 12
U1 0
U2 13
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 AUG
PY 2012
VL 90
BP 41
EP 64
DI 10.1016/j.engfracmech.2012.04.014
PG 24
WC Mechanics
SC Mechanics
GA 976ZZ
UT WOS:000306627200003
ER

PT J
AU Kleeman, MP
   Seibert, BA
   Lamont, GB
   Hopkinson, KM
   Graham, SR
AF Kleeman, Mark P.
   Seibert, Benjamin A.
   Lamont, Gary B.
   Hopkinson, Kenneth M.
   Graham, Scott R.
TI Solving Multicommodity Capacitated Network Design Problems Using
   Multiobjective Evolutionary Algorithms
SO IEEE TRANSACTIONS ON EVOLUTIONARY COMPUTATION
LA English
DT Article
DE Multicommodity capacitated networks; multiobjective evolutionary
   algorithms; network centric systems; network topology; Pareto
   optimization
ID GENETIC ALGORITHM; SEARCH
AB Evolutionary algorithms can be applied to a variety of constrained network communication problems with centric type models. This paper shows that with real-world complex network communication problems of this type, sophisticated statistical search is required. This situation occurs due to the fact that these optimization problems are at least NP-complete. In order to appreciate the formal modeling of realistic communication networks, historical network design problems are presented and evolved into more complex real-world models with associated deterministic and stochastic solution approaches discussed. This discussion leads into the design of an innovative multiobjective evolutionary algorithm (MOEA) to solve a very complex network design problem variation called the multicommodity capacitated network design problem (MCNDP). This variation represents a hybrid real-world communication architecture as reflected in real-world network centric models with directional communications, multiple objectives including costs, delays, robustness, vulnerability, and operating reliability within network constraints. Nodes in such centric systems can have multiple and varying link capacities as well as rates and information (commodity) quantities to be sent and received. Each commodity can also have independent prioritized bandwidth and spectrum requirements. The nondominated sorting genetic algorithm (NSGA-II) is selected as the MOEA framework which is modified and parallelized to solve the generic MCNDP. Since the MCNDP is highly constrained but with an enormous number of possible network communication topologies, a novel initialization procedure and mutation method are integrated resulting in reduced search space. Empirical results and analysis indicate that effective topological Pareto solutions are generated for use in highly constrained, communication-based network design.
C1 [Kleeman, Mark P.; Lamont, Gary B.; Hopkinson, Kenneth M.; Graham, Scott R.] USAF, Inst Technol, Dept Elect & Comp Engn, Grad Sch Engn & Management, Wright Patterson AFB, OH 45433 USA.
   [Seibert, Benjamin A.] Georgia Inst Technol, Sch Computat Sci & Engn, Atlanta, GA 30332 USA.
RP Kleeman, MP (reprint author), USAF, Inst Technol, Dept Elect & Comp Engn, Grad Sch Engn & Management, Wright Patterson AFB, OH 45433 USA.
EM mark.kleeman@us.af.mil; bseib-ert3@gatech.edu; gary.lamont@afit.edu;
   ken-neth.hopkinson@afit.edu; scott.graham.5@us.af.mil
OI Graham, Scott/0000-0003-0193-1192
FU AFOSR/NL [F1ATA04293J001]; SOCHE [FA860405D1081]
FX Part of this investigation was funded by AFOSR/NL, under Contract
   F1ATA04293J001, and also by SOCHE, under Contract FA860405D1081. The
   views expressed in this paper are those of the authors and do not
   reflect the official policy of the United States Air Force, Department
   of Defense, or the United States Government.
NR 59
TC 3
Z9 3
U1 0
U2 9
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 1089-778X
J9 IEEE T EVOLUT COMPUT
JI IEEE Trans. Evol. Comput.
PD AUG
PY 2012
VL 16
IS 4
BP 449
EP 471
DI 10.1109/TEVC.2011.2125968
PG 23
WC Computer Science, Artificial Intelligence; Computer Science, Theory &
   Methods
SC Computer Science
GA 986ID
UT WOS:000307334400001
ER

PT J
AU Kahler, SW
   Akiyama, S
   Gopalswamy, N
AF Kahler, S. W.
   Akiyama, S.
   Gopalswamy, N.
TI DEFLECTIONS OF FAST CORONAL MASS EJECTIONS AND THE PROPERTIES OF
   ASSOCIATED SOLAR ENERGETIC PARTICLE EVENTS
SO ASTROPHYSICAL JOURNAL
LA English
DT Article
DE acceleration of particles; Sun: coronal mass ejections (CMEs); Sun:
   flares; Sun: particle emission
ID FAST-WIND REGIONS; SPACE WEATHER; SEP EVENTS; HOLES; HELIOSPHERE;
   STEREO; SUN; ACCELERATION; PROPAGATION; INTENSITIES
AB The onset times and peak intensities of solar energetic particle (SEP) events at Earth have long been thought to be influenced by the open magnetic fields of coronal holes (CHs). The original idea was that a CH lying between the solar SEP source region and the magnetic footpoint of the 1 AU observer would result in a delay in onset and/or a decrease in the peak intensity of that SEP event. Recently, Gopalswamy et al. showed that CHs near coronal mass ejection (CME) source regions can deflect fast CMEs from their expected trajectories in space, explaining the appearance of driverless shocks at 1 AU from CMEs ejected near solar central meridian (CM). This suggests that SEP events originating in CME-driven shocks may show variations attributable to CH deflections of the CME trajectories. Here, we use a CH magnetic force parameter to examine possible effects of CHs on the timing and intensities of 41 observed gradual E similar to 20 MeV SEP events with CME source regions within 20 degrees of CM. We find no systematic CH effects on SEP event intensity profiles. Furthermore, we find no correlation between the CME leading-edge measured position angles and SEP event properties, suggesting that the widths of CME-driven shock sources of the SEPs are much larger than the CMEs. Independently of the SEP event properties, we do find evidence for significant CME deflections by CH fields in these events.
C1 [Kahler, S. W.] USAF, Res Lab, Space Vehicles Directorate, Kirtland AFB, NM 87117 USA.
   [Akiyama, S.] Catholic Univ Amer, Inst Astrophy & Computat Sci, Washington, DC 20064 USA.
   [Gopalswamy, N.] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA.
RP Kahler, SW (reprint author), USAF, Res Lab, Space Vehicles Directorate, 3550 Aberdeen Ave, Kirtland AFB, NM 87117 USA.
EM AFRL.RVB.PA@kirtland.af.mil
OI Gopalswamy, Nat/0000-0001-5894-9954
FU AFOSR [2301RDZ4]; NASA's LWS TRT
FX S. Kahler was funded by AFOSR Task 2301RDZ4. N. Gopalswamy and S.
   Akiyama were supported by NASA's LWS TR&T program. CME data were taken
   from the CDAW LASCO catalog. This CME catalog 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.
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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 AUG 1
PY 2012
VL 754
IS 2
AR 100
DI 10.1088/0004-637X/754/2/100
PG 7
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 977MO
UT WOS:000306666700021
ER

PT J
AU Tapajna, M
   Killat, N
   Moereke, J
   Paskova, T
   Evans, KR
   Leach, J
   Li, X
   Ozgur, U
   Morkoc, H
   Chabak, KD
   Crespo, A
   Gillespie, JK
   Fitch, R
   Kossler, M
   Walker, DE
   Trejo, M
   Via, GD
   Blevins, JD
   Kuball, M
AF Tapajna, M.
   Killat, N.
   Moereke, J.
   Paskova, T.
   Evans, K. R.
   Leach, J.
   Li, X.
   Oezgur, Ue.
   Morkoc, H.
   Chabak, K. D.
   Crespo, A.
   Gillespie, J. K.
   Fitch, R.
   Kossler, M.
   Walker, D. E.
   Trejo, M.
   Via, G. D.
   Blevins, J. D.
   Kuball, M.
TI Non-Arrhenius Degradation of AlGaN/GaN HEMTs Grown on Bulk GaN
   Substrates
SO IEEE ELECTRON DEVICE LETTERS
LA English
DT Article
DE AlGaN/GaN HEMT; bulk GaN; electrical stress; electroluminescence (EL);
   reliability
ID TRANSISTORS
AB The reliability of AlGaN/GaN HEMTs processed on bulk GaN substrates was studied using electrical and optical methods, showing a decreasing degradation with increasing baseplate temperature (T-b). Generation of traps spatially located in both intrinsic and extrinsic HEMT regions was found to be most pronounced for OFF-state bias stress performed at room T-b, while increasing T-b up to 150 degrees C decreased trap generation underneath the gate perimeter. This was attributed to degradation driven by hot electrons as it should dominate over defect-related degradation mechanisms in GaN-on-GaN devices.
C1 [Tapajna, M.; Killat, N.; Moereke, J.; Kuball, M.] Univ Bristol, HH Wills Phys Lab, Bristol BS8 1TL, Avon, England.
   [Tapajna, M.] Slovak Acad Sci, Inst Elect Engn, Bratislava 84104, Slovakia.
   [Paskova, T.; Evans, K. R.; Leach, J.] Kyma Technol, Raleigh, NC 27617 USA.
   [Li, X.; Oezgur, Ue.; Morkoc, H.] Virginia Commonwealth Univ, Dept Elect & Comp Engn, Richmond, VA 23284 USA.
   [Chabak, K. D.; Crespo, A.; Gillespie, J. K.; Fitch, R.; Kossler, M.; Walker, D. E.; Trejo, M.; Via, G. D.; Blevins, J. D.] USAF, Res Lab, Dayton, OH 45433 USA.
RP Tapajna, M (reprint author), Univ Bristol, HH Wills Phys Lab, Tyndall Ave, Bristol BS8 1TL, Avon, England.
EM milan.tapajna@bristol.ac.uk; Nicole.Killat@bristol.ac.uk;
   janina.moereke@bristol.ac.uk; tmpaskov@ncsu.edu; evans@kymatech.com;
   leach@kymatech.com; lix9@vcu.edu; uozgur@vcu.edu; hmorkoc@vcu.edu;
   kelson.chabak@us.af.mil; antonio.crespo@wpafb.af.mil;
   James.Gillespie@wpafb.af.mil; robert.fitch@wpafb.af.mil;
   mauricio.kossler@wpafb.af.mil; dennis.walker@wpafb.af.mil;
   manuel.trejo@wpafb.af.mil; Glen.Via@wpafb.af.mil;
   John.Blevins@wpafb.af.mil; martin.kuball@bristolac.uk
RI Paskova, Tanya/D-2203-2009
FU Office of Naval Research (ONR); ONR Global through the DRIFT program
   [N00014-08-1-1091]
FX Manuscript received January 5, 2012; revised April 30, 2012; accepted
   May 6, 2012. Date of publication June 20, 2012; date of current version
   July 20, 2012. This work was supported by the Office of Naval Research
   (ONR) and ONR Global through the DRIFT program under Grant
   N00014-08-1-1091 (monitored by Dr. Paul Maki). The review of this letter
   was arranged by Editor M. Passlack.
NR 14
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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 AUG
PY 2012
VL 33
IS 8
BP 1126
EP 1128
DI 10.1109/LED.2012.2199278
PG 3
WC Engineering, Electrical & Electronic
SC Engineering
GA 980WA
UT WOS:000306923700010
ER

PT J
AU Renoudet, VV
   Costa-Mallen, P
   Hopkins, E
AF Renoudet, Virginia V.
   Costa-Mallen, Paola
   Hopkins, Elwood
TI A Diet Low in Animal Fat and Rich in N-Hexacosanol and Fisetin Is
   Effective in Reducing Symptoms of Parkinson's Disease
SO JOURNAL OF MEDICINAL FOOD
LA English
DT Article
DE fisetin; hexacosanol; lipids; neurodegenerative disease;
   neuroprotection; Parkinson's disease
ID FLAVONOID FISETIN; RISK; ENHANCEMENT; ALCOHOLS
AB This study describes how foods rich in fisetin and hexacosanol added to a strict diet reversed most symptoms of Parkinson's disease (PD) in one patient. This is a case report involving outpatient care. The subject was a dietitian diagnosed with idiopathic PD in 2000 at the age of 53 years old, with a history of exposure to neurotoxins and no family history of PD. A basic diet started in 2000 consisted of predominantly fruits, vegetables, 100% whole grains, extra virgin olive oil, nuts, seeds, nonfat milk products, tea, coffee, spices, small amounts of dark chocolate, and less than 25 g of animal fat daily. The basic diet alone failed to prevent decline due to PD. In 2009, the basic diet was enhanced with a good dietary source of both fisetin and hexacosanol. Six months after the patient started the enhanced diet rich in fisetin and hexacosanol, a clinically significant improvement in symptoms was noted; the patient's attending neurologist reported that the clinical presentation of cogwheel rigidity, micrographia, bradykinesia, dystonia, constricted arm swing with gait, hypomimia, and retropulsion appeared to be resolved. The only worsening of symptoms occurred when the diet was not followed precisely. Little improvement in tremor or seborrhea was observed. The clinical improvement has persisted to date. To the best of our knowledge, this is the first case where adjunctive diet therapy resulted in a significant reduction of symptoms of PD without changing the type or increasing the amount of medications.
C1 [Costa-Mallen, Paola] Bastyr Univ, Res Inst, Kenmore, WA 98028 USA.
   [Renoudet, Virginia V.] USAF, Biomed Sci Corps, Biloxi, MS USA.
   [Hopkins, Elwood] Naval Hosp, Bremerton, WA USA.
RP Costa-Mallen, P (reprint author), Bastyr Univ, Res Inst, 14500 Juanita Dr SE, Kenmore, WA 98028 USA.
EM pcostamallen@bastyr.edu
NR 27
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U1 2
U2 16
PU MARY ANN LIEBERT INC
PI NEW ROCHELLE
PA 140 HUGUENOT STREET, 3RD FL, NEW ROCHELLE, NY 10801 USA
SN 1096-620X
J9 J MED FOOD
JI J. Med. Food
PD AUG
PY 2012
VL 15
IS 8
BP 758
EP 761
DI 10.1089/jmf.2012.0060
PG 4
WC Chemistry, Medicinal; Food Science & Technology; Nutrition & Dietetics
SC Pharmacology & Pharmacy; Food Science & Technology; Nutrition &
   Dietetics
GA 982CW
UT WOS:000307020300013
PM 22846082
ER

PT J
AU Ketov, SV
   Louzguina-Luzgina, LV
   Churyumov, AY
   Solonin, AN
   Miracle, DB
   Louzguine-Luzgin, DV
   Inoue, A
AF Ketov, S. V.
   Louzguina-Luzgina, L. V.
   Churyumov, A. Yu.
   Solonin, A. N.
   Miracle, D. B.
   Louzguine-Luzgin, D. V.
   Inoue, A.
TI Glass-formation and crystallization processes in Ag-Y-Cu alloys
SO JOURNAL OF NON-CRYSTALLINE SOLIDS
LA English
DT Article
DE Glass-formation; Glass crystallization; Ag-Y-Cu alloys; Amorphous
   structure
ID BULK METALLIC-GLASS; FORMING ABILITY; AMORPHOUS-ALLOYS;
   MECHANICAL-PROPERTIES; SUPERCOOLED LIQUID; STABILITY; TRANSITION;
   PACKING; SYSTEM; GOLD
AB Investigation of glass-formation and crystallization processes of several alloys of Ag-Y-Cu system was conducted. The samples were produced by melt spinning and Cu-mold casting. The structure of ribbon samples was examined by X-ray diffractometry and transmission electron microscopy. Phase transformations were studied by differential scanning and isothermal calorimetry and differential thermal analysis. Despite the large difference in atomic radii between the components in the investigated system, even being produced by melt spinning technique at high cooling rate, only Ag61Y29Cu10 alloy with large supercooled liquid region was found to be X-ray amorphous. A principle for obtaining an alloy with high glass forming ability involving difference in atomic radii between the alloy components is considered. Efficient cluster packing model was also tested. (C) 2012 Elsevier B.V. All rights reserved.
C1 [Ketov, S. V.; Louzguina-Luzgina, L. V.; Louzguine-Luzgin, D. V.; Inoue, A.] Tohoku Univ, WPI Adv Inst Mat Res, Aoba Ku, Sendai, Miyagi 9808577, Japan.
   [Churyumov, A. Yu.; Solonin, A. N.] Natl Univ Sci & Technol MISIS MISIS, Moscow 119049, Russia.
   [Miracle, D. B.] USAF, Res Lab, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA.
RP Ketov, SV (reprint author), Tohoku Univ, WPI Adv Inst Mat Res, Aoba Ku, Sendai, Miyagi 9808577, Japan.
EM ketov.sergey@wpi-aimr.tohoku.ac.jp
RI LOUZGUINE, Dmitri/D-2492-2010; Inoue, Akihisa/E-5271-2015; Solonin,
   Alexey/H-9930-2014; Ketov, Sergey/G-5558-2011
OI LOUZGUINE, Dmitri/0000-0001-5716-4987; Solonin,
   Alexey/0000-0002-6520-7964; 
FU World Premier International Research Center (WPI) Initiative for Atoms,
   Molecules and Materials; Advanced Research Center of Metallic Glasses;
   Russian Ministry of Education and Science within the Federal program
   "Scientific and Scientific-Pedagogical Personnel of Innovate Russia";
   National University of Science and Technology
FX This work was supported by the "World Premier International Research
   Center (WPI) Initiative for Atoms, Molecules and Materials", the
   Advanced Research Center of Metallic Glasses and by the Russian Ministry
   of Education and Science within the Federal program "Scientific and
   Scientific-Pedagogical Personnel of Innovate Russia" for 2009-2013 and
   with financial support of the Program of Creation and Development of the
   National University of Science and Technology "MISIS".
NR 35
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PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0022-3093
J9 J NON-CRYST SOLIDS
JI J. Non-Cryst. Solids
PD AUG 1
PY 2012
VL 358
IS 15
BP 1759
EP 1763
DI 10.1016/j.jnoncrysol.2012.05.012
PG 5
WC Materials Science, Ceramics; Materials Science, Multidisciplinary
SC Materials Science
GA 982FS
UT WOS:000307028900007
ER

PT J
AU Adiga, U
   Bell, BL
   Ponomareva, L
   Taylor, D
   Saldanha, R
   Nelson, S
   Lamkin, TJ
AF Adiga, Umesh
   Bell, Brian L.
   Ponomareva, Larissa
   Taylor, Debbie
   Saldanha, Roland
   Nelson, Sandra
   Lamkin, Thomas J.
TI Mapping Infected Cell Phenotype
SO IEEE TRANSACTIONS ON BIOMEDICAL ENGINEERING
LA English
DT Article
DE Biodefense; bioimaging; high content screening; image analytics;
   infection
ID IMAGE-ANALYSIS; FEATURES; CLASSIFICATION; PATTERNS
AB Quantitative modeling of the phenotypic changes in the host cell during the bacterial infection makes it possible to explore an empirical relation between the infection stages and the quantifiable host-cell phenotype. A statistically reliable model of this relation can facilitate therapeutic defense against threats due to natural and genetically engineered bacterium. In the preliminary experiment, we have collected several thousand cell images over a period of 72 h of infection with a 2-h sampling frequency that covers various stages of infection by Francisella tularenesis (Ft). Segmentation of macrophages in images was accomplished using a fully automatic, parallel region growing technique. Over two thousand feature descriptors for the host cell were calculated. Multidimensional scaling, followed by hierarchical clustering, was used to group the cells. Preliminary results show that the host-cell phenotype, as defined by the set of measureable features, groups into different classes that can be mapped to the stages of infection.
C1 [Taylor, Debbie; Lamkin, Thomas J.] USAF, Res Lab, Dayton, OH 45433 USA.
   [Adiga, Umesh; Saldanha, Roland] UES Inc, Dayton, OH 45432 USA.
   [Bell, Brian L.] Bristol Myers Squibb Co, Syracuse, NY 13057 USA.
   [Ponomareva, Larissa; Nelson, Sandra] Univ Cincinnati, Ctr Drug Discovery, Cincinnati, OH 45237 USA.
RP Lamkin, TJ (reprint author), USAF, Res Lab, Dayton, OH 45433 USA.
EM uadiga@ues.com; bbell365@gmail.com; ponomalar@gmail.com;
   deborah.spaulding@wpafb.af.mil; rsaldanha@ues.com;
   sandranelson88@gmail.com; Thomas.Lamkin@wpafb.af.mil
FU Transformational Medical Technologies program from the Department of
   Defense Chemical and Biological Defense program through the Defense
   Threat Reduction Agency (DTRA) [B102387M]
FX This paper was supported by the Transformational Medical Technologies
   program contract #B102387M from the Department of Defense Chemical and
   Biological Defense program through the Defense Threat Reduction Agency
   (DTRA). Asterisk indicates corresponding author.
NR 28
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PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 0018-9294
J9 IEEE T BIO-MED ENG
JI IEEE Trans. Biomed. Eng.
PD AUG
PY 2012
VL 59
IS 8
BP 2362
EP 2371
DI 10.1109/TBME.2012.2204746
PG 10
WC Engineering, Biomedical
SC Engineering
GA 976OA
UT WOS:000306593000031
PM 22711766
ER

PT J
AU Sodickson, A
   Warden, GI
   Farkas, CE
   Ikuta, I
   Prevedello, LM
   Andriole, KP
   Khorasani, R
AF Sodickson, Aaron
   Warden, Graham I.
   Farkas, Cameron E.
   Ikuta, Ichiro
   Prevedello, Luciano M.
   Andriole, Katherine P.
   Khorasani, Ramin
TI Exposing Exposure: Automated Anatomy-specific CT Radiation Exposure
   Extraction for Quality Assurance and Radiation Monitoring
SO RADIOLOGY
LA English
DT Article
ID DOSE INDEX; CANCER-RISKS; RADIOLOGY; REGISTRY
AB Purpose: To develop and validate an informatics toolkit that extracts anatomy-specific computed tomography (CT) radiation exposure metrics (volume CT dose index and dose-length product) from existing digital image archives through optical character recognition of CT dose report screen captures (dose screens) combined with Digital Imaging and Communications in Medicine attributes.
   Materials and Methods: This institutional review board-approved HIPAA-compliant study was performed in a large urban health care delivery network. Data were drawn from a random sample of CT encounters that occurred between 2000 and 2010; images from these encounters were contained within the enterprise image archive, which encompassed images obtained at an adult academic tertiary referral hospital and its affiliated sites, including a cancer center, a community hospital, and outpatient imaging centers, as well as images imported from other facilities. Software was validated by using 150 randomly selected encounters for each major CT scanner manufacturer, with outcome measures of dose screen retrieval rate (proportion of correctly located dose screens) and anatomic assignment precision (proportion of extracted exposure data with correctly assigned anatomic region, such as head, chest, or abdomen and pelvis). The 95% binomial confidence intervals (CIs) were calculated for discrete proportions, and CIs were derived from the standard error of the mean for continuous variables. After validation, the informatics toolkit was used to populate an exposure repository from a cohort of 54 549 CT encounters; of which 29 948 had available dose screens.
   Results: Validation yielded a dose screen retrieval rate of 99% (597 of 605 CT encounters; 95% CI: 98%, 100%) and an anatomic assignment precision of 94% (summed DLP fraction correct 563 in 600 CT encounters; 95% CI: 92%, 96%). Patient safety applications of the resulting data repository include bench-marking between institutions, CT protocol quality control and optimization, and cumulative patient- and anatomy-specific radiation exposure monitoring.
   Conclusion: Large-scale anatomy-specific radiation exposure data repositories can be created with high fidelity from existing digital image archives by using open-source informatics tools.
C1 [Sodickson, Aaron; Warden, Graham I.; Farkas, Cameron E.; Ikuta, Ichiro; Prevedello, Luciano M.; Andriole, Katherine P.; Khorasani, Ramin] Harvard Univ, Brigham & Womens Hosp, Sch Med, Dept Radiol, Boston, MA 02115 USA.
   [Sodickson, Aaron; Warden, Graham I.; Farkas, Cameron E.; Ikuta, Ichiro; Prevedello, Luciano M.; Andriole, Katherine P.; Khorasani, Ramin] Harvard Univ, Brigham & Womens Hosp, Sch Med, Ctr Evidence Based Imaging, Boston, MA 02115 USA.
   [Warden, Graham I.] USAF, Washington, DC 20330 USA.
RP Sodickson, A (reprint author), Harvard Univ, Brigham & Womens Hosp, Sch Med, Dept Radiol, 75 Francis St, Boston, MA 02115 USA.
EM asodickson@partners.org
RI Prevedello, Luciano/G-8650-2014; 
OI Prevedello, Luciano/0000-0002-6768-6452; Ikuta,
   Ichiro/0000-0002-7145-833X
FU NLM NIH HHS [R01 LM010679, T15 LM007092]
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U2 6
PU RADIOLOGICAL SOC NORTH AMERICA
PI OAK BROOK
PA 820 JORIE BLVD, OAK BROOK, IL 60523 USA
SN 0033-8419
J9 RADIOLOGY
JI Radiology
PD AUG
PY 2012
VL 264
IS 2
BP 397
EP 405
DI 10.1148/radiol.12111822
PG 9
WC Radiology, Nuclear Medicine & Medical Imaging
SC Radiology, Nuclear Medicine & Medical Imaging
GA 977KX
UT WOS:000306660000011
PM 22668563
ER

PT J
AU Ikuta, I
   Sodickson, A
   Wasser, EJ
   Warden, GI
   Gerbaudo, VH
   Khorasani, R
AF Ikuta, Ichiro
   Sodickson, Aaron
   Wasser, Elliot J.
   Warden, Graham I.
   Gerbaudo, Victor H.
   Khorasani, Ramin
TI Exposing Exposure: Enhancing Patient Safety through Automated Data
   Mining of Nuclear Medicine Reports for Quality Assurance and Organ Dose
   Monitoring
SO RADIOLOGY
LA English
DT Article
ID RADIATION-EXPOSURE; IONIZING-RADIATION; CANCER-RISKS; CT; CARDIOLOGY;
   RADIOLOGY; DOSIMETRY; ADULTS; SIZE
AB Purpose: To develop and validate an open-source informatics toolkit capable of creating a radiation exposure data repository from existing nuclear medicine report archives and to demonstrate potential applications of such data for quality assurance and longitudinal patient-specific radiation dose monitoring.
   Materials and Methods: This study was institutional review board approved and HIPAA compliant. Informed consent was waived. An open-source toolkit designed to automate the extraction of data on radiopharmaceuticals and administered activities from nuclear medicine reports was developed. After iterative code training, manual validation was performed on 2359 nuclear medicine reports randomly selected from September 17, 1985, to February 28, 2011. Recall (sensitivity) and precision (positive predictive value) were calculated with 95% binomial confidence intervals. From the resultant institutional data repository, examples of usage in quality assurance efforts and patient-specific longitudinal radiation dose monitoring obtained by calculating organ doses from the administered activity and radiopharmaceutical of each examination were provided.
   Results: Validation statistics yielded a combined recall of 97.6% +/- 0.7 (95% confidence interval) and precision of 98.7% +/- 0.5. Histograms of administered activity for fluorine 18 fluorodeoxyglucose and iodine 131 sodium iodide were generated. An organ dose heatmap which displays a sample patient's dose accumulation from multiple nuclear medicine examinations was created.
   Conclusion: Large-scale repositories of radiation exposure data can be extracted from institutional nuclear medicine report archives with high recall and precision. Such repositories enable new approaches in radiation exposure patient safety initiatives and patient-specific radiation dose monitoring. (c) RSNA, 2012
C1 [Ikuta, Ichiro; Sodickson, Aaron; Wasser, Elliot J.; Warden, Graham I.; Khorasani, Ramin] Harvard Univ, Brigham & Womens Hosp, Sch Med, Dept Radiol, Boston, MA 02115 USA.
   [Ikuta, Ichiro; Sodickson, Aaron; Wasser, Elliot J.; Warden, Graham I.; Khorasani, Ramin] Harvard Univ, Brigham & Womens Hosp, Sch Med, Ctr Evidence Based Imaging, Boston, MA 02115 USA.
   [Gerbaudo, Victor H.] Harvard Univ, Brigham & Womens Hosp, Sch Med, Div Nucl Med & Mol Imaging, Boston, MA 02115 USA.
   [Warden, Graham I.] USAF, Washington, DC 20330 USA.
RP Sodickson, A (reprint author), Harvard Univ, Brigham & Womens Hosp, Sch Med, Dept Radiol, 75 Francis St, Boston, MA 02115 USA.
EM asodickson@partners.org
OI Ikuta, Ichiro/0000-0002-7145-833X
FU United States Air Force Medical Corp.; National Institutes of Health
   [R01 LM010679, T15LM007092]
FX From the Department of Radiology and Center for Evidence-Based Imaging
   (I.I., A.S., E.J.W., G.I.W., R.K.) and Division of Nuclear Medicine and
   Molecular Imaging (V.H.G.), Brigham and Women's Hospital, Harvard
   Medical School, 75 Francis St, Boston, MA 02115; and United States Air
   Force, Washington, DC (G.I.W.). Received October 3, 2011; revision
   requested November 11; revision received January 16, 2012; accepted
   January 31; final version accepted February 22. G.I.W. supported by the
   United States Air Force Medical Corp. Address correspondence to A.S.
   (e-mail: asodickson@partners.org).; This research was supported by the
   National Institutes of Health (grants R01 LM010679 and T15LM007092).
NR 25
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PU RADIOLOGICAL SOC NORTH AMERICA
PI OAK BROOK
PA 820 JORIE BLVD, OAK BROOK, IL 60523 USA
SN 0033-8419
J9 RADIOLOGY
JI Radiology
PD AUG
PY 2012
VL 264
IS 2
BP 406
EP 413
DI 10.1148/radiol.12111823
PG 8
WC Radiology, Nuclear Medicine & Medical Imaging
SC Radiology, Nuclear Medicine & Medical Imaging
GA 977KX
UT WOS:000306660000012
PM 22627599
ER

PT J
AU Ali, SR
   Yang, LY
   Button, CJ
   McCoy, TTH
AF Ali, Saba Rasheed
   Yang, Ling-Yan
   Button, Christopher J.
   McCoy, Thomasin T. H.
TI Career Education Programming in Three Diverse High Schools: A Critical
   Psychology-Case Study Research Approach
SO JOURNAL OF CAREER DEVELOPMENT
LA English
DT Article
DE career interventions; Latino youth; career education; critical
   psychology; case study methodology
ID COUNSELING PSYCHOLOGISTS; STUDENTS; INTERVENTIONS; ASPIRATIONS; CHOICE
AB From a critical psychology perspective, Prilleltensky and Nelson advocate for research that has explicit focus on social change and can allow for full participation and empowerment of those under study. The current article describes the collaborative development, implementation, and evaluation of a career education program within three ethnically and economically diverse rural high schools. Using case study methodology, the authors examined the effects of the "A Future in Iowa Career Education" (FICE) program using three different sources of data (pre-post test results, student evaluations, and focus groups). Context-specific results indicated the program was associated with increases in self-efficacy and career aspirations and had practical strengths and weaknesses. Results are discussed in terms of current literature and practical implications are provided.
C1 [Ali, Saba Rasheed] Univ Iowa, Lindquist Ctr 361, Iowa City, IA 52242 USA.
   [Button, Christopher J.] USAF, Wichita Falls, TX USA.
   [Ali, Saba Rasheed] Univ Iowa, Counseling Psychol Program, Iowa City, IA 52242 USA.
   [Yang, Ling-Yan] Univ Iowa, Sch Psychol, Iowa City, IA 52242 USA.
   [McCoy, Thomasin T. H.] Univ Iowa, Div Pediat Psychol, Iowa City, IA 52242 USA.
RP Ali, SR (reprint author), Univ Iowa, Lindquist Ctr 361, Iowa City, IA 52242 USA.
EM saba-ali@uiowa.edu
NR 29
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U1 5
U2 17
PU SAGE PUBLICATIONS INC
PI THOUSAND OAKS
PA 2455 TELLER RD, THOUSAND OAKS, CA 91320 USA
SN 0894-8453
J9 J CAREER DEV
JI J. Career Dev.
PD AUG
PY 2012
VL 39
IS 4
SI SI
BP 357
EP 385
DI 10.1177/0894845311398131
PG 29
WC Psychology, Applied
SC Psychology
GA 975JN
UT WOS:000306507700004
ER

PT J
AU Schmerge, D
   Francis, O
   Henton, J
   Ingles, D
   Jones, D
   Kennedy, J
   Krauterbluth, K
   Liard, J
   Newell, D
   Sands, R
   Schiel, A
   Silliker, J
   van Westrum, D
AF Schmerge, D.
   Francis, O.
   Henton, J.
   Ingles, D.
   Jones, D.
   Kennedy, J.
   Krauterbluth, K.
   Liard, J.
   Newell, D.
   Sands, R.
   Schiel, A.
   Silliker, J.
   van Westrum, D.
TI Results of the first North American comparison of absolute gravimeters,
   NACAG-2010
SO JOURNAL OF GEODESY
LA English
DT Article
DE Absolute gravimetry; Gravimeter; GRAV-D; Comparison; Offset
ID GRAVITY METERS
AB The first North American Comparison of absolute gravimeters (NACAG-2010) was hosted by the National Oceanic and Atmospheric Administration at its newly renovated Table Mountain Geophysical Observatory (TMGO) north of Boulder, Colorado, in October 2010. NACAG-2010 and the renovation of TMGO are part of NGS's GRAV-D project (Gravity for the Redefinition of the American Vertical Datum). Nine absolute gravimeters from three countries participated in the comparison. Before the comparison, the gravimeter operators agreed to a protocol describing the strategy to measure, calculate, and present the results. Nine sites were used to measure the free-fall acceleration of g. Each gravimeter measured the value of g at a subset of three of the sites, for a total set of 27 g-values for the comparison. The absolute gravimeters agree with one another with a standard deviation of 1.6 mu Gal (1 Gal a parts per thousand 1 cm s (-2)). The minimum and maximum offsets are -2.8 and 2.7 mu Gal. This is an excellent agreement and can be attributed to multiple factors, including gravimeters that were in good working order, good operators, a quiet observatory, and a short duration time for the experiment. These results can be used to standardize gravity surveys internationally.
C1 [Schmerge, D.] US Forest Serv, Juneau, AK USA.
   [Francis, O.] Univ Luxembourg, Luxembourg, Luxembourg.
   [Henton, J.] Nat Resources Canada, Sidney, BC, Canada.
   [Ingles, D.] Natl Res Council Canada, Ottawa, ON, Canada.
   [Jones, D.; Schiel, A.; van Westrum, D.] Microg LaCoste Inc, Lafayette, CO USA.
   [Kennedy, J.] US Geol Survey, Tucson, AZ USA.
   [Krauterbluth, K.; Sands, R.] Natl Geospatial Intelligence Agcy, Patrick AFB, FL USA.
   [Liard, J.; Silliker, J.] Nat Resources Canada, Ottawa, ON, Canada.
   [Newell, D.] Natl Inst Stand & Technol, Gaithersburg, MD 20899 USA.
RP Schmerge, D (reprint author), US Forest Serv, Juneau, AK USA.
EM david.schmerge@yahoo.com
NR 14
TC 8
Z9 9
U1 1
U2 2
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 0949-7714
J9 J GEODESY
JI J. Geodesy
PD AUG
PY 2012
VL 86
IS 8
BP 591
EP 596
DI 10.1007/s00190-011-0539-y
PG 6
WC Geochemistry & Geophysics; Remote Sensing
SC Geochemistry & Geophysics; Remote Sensing
GA 975ET
UT WOS:000306490700002
ER

PT J
AU Kihm, KD
   Hussey, DS
   Pratt, DM
   Swanson, AD
AF Kihm, Kenneth D.
   Hussey, Daniel S.
   Pratt, David M.
   Swanson, Andrew D.
TI Neutron Imaging of Progressive Mixing of H2O and D2O inside a Metal (Al)
   Container
SO JOURNAL OF HEAT TRANSFER-TRANSACTIONS OF THE ASME
LA English
DT News Item
C1 [Kihm, Kenneth D.] Univ Tennessee, Knoxville, TN USA.
   [Hussey, Daniel S.] NIST, Gaithersburg, MD 20899 USA.
   [Pratt, David M.; Swanson, Andrew D.] USAF, Res Lab, Wright Patterson AFB, OH USA.
RP Kihm, KD (reprint author), Univ Tennessee, Knoxville, TN USA.
NR 0
TC 0
Z9 0
U1 0
U2 1
PU ASME-AMER SOC MECHANICAL ENG
PI NEW YORK
PA THREE PARK AVE, NEW YORK, NY 10016-5990 USA
SN 0022-1481
J9 J HEAT TRANS-T ASME
JI J. Heat Transf.-Trans. ASME
PD AUG
PY 2012
VL 134
IS 8
AR 080904
PG 1
WC Thermodynamics; Engineering, Mechanical
SC Thermodynamics; Engineering
GA 970OZ
UT WOS:000306143200004
ER

PT J
AU Tassev, V
   Snure, M
   Peterson, R
   Bedford, R
   Bliss, D
   Bryant, G
   Mann, M
   Goodhue, W
   Vangala, S
   Termkoa, K
   Lin, A
   Harris, JS
   Fejer, MM
   Yapp, C
   Tetlak, S
AF Tassev, V.
   Snure, M.
   Peterson, R.
   Bedford, R.
   Bliss, D.
   Bryant, G.
   Mann, M.
   Goodhue, W.
   Vangala, S.
   Termkoa, K.
   Lin, A.
   Harris, J. S.
   Fejer, M. M.
   Yapp, C.
   Tetlak, S.
TI Epitaxial growth of quasi-phase matched GaP for nonlinear applications:
   Systematic process improvements
SO JOURNAL OF CRYSTAL GROWTH
LA English
DT Article; Proceedings Paper
CT 18th American Conference on Crystal Growth and Epitaxy (ACCGE)/15th US
   Biennial Workshop on Organometallic Vapor Phase Epitaxy (OMVPE)
CY JUL 31-AUG 05, 2011
CL Monterey, CA
SP Amer Assoc Crystal Growth & Epitaxy (AACGE)
DE Hydride vapor phase epitaxy; Gallium phosphide and gallium arsenide;
   Nonlinear optic materials
ID OPTICAL FREQUENCY-CONVERSION; GAAS; HVPE; MORPHOLOGIES; ABSORPTION;
   DEVICES
AB This article presents recent results related to development of thick quasi-phase-matched GaP for incorporation in high power sources radiating in the mid-infrared. The focus was on increasing the growth rate and layer thickness of orientation patterned GaP, while ensuring equal vertical deposition rates and rectangular shape of the domain mesas for both opposite crystallographic lattice orientations. Additionally, we present solutions which confine the presence of uncontrollable hillock growth. The experiments were conducted in a hot-wall horizontal quartz reactor using a standard low-pressure hydride vapor phase epitaxial (HVPE) process. GaP was grown on bare, half-patterned (HP) and orientation-patterned (OP) templates fabricated on (100) GaP and (100) misoriented 4 degrees towards (111)B substrates. The domains were oriented either along the [011] or the [01 (1) over bar] direction. We compared a sub-lattice inversion MBE assisted process and a wafer fusion bonding technique to create OP templates. When the growth was performed on bare material, the properly chosen growth conditions resulted in reproducible growth of up to 370 mu m thick layers with high optical, surface and structural quality, grown at a growth rate of 100 mu m/h in one-hour long experiments and 45 mu m/h for 8-h long growths. The presence of a core inside the hillocks growing on the layer surface was eliminated. The hillocks were flattened and widened, which allowed often a single hillock to span several domains with alternating opposite crystallographic orientations, when growth was performed on patterned templates. The HP templates were used to determine the optimal substrate and pattern orientations prior to starting growth experiments on OP-templates. As an additional result they revealed that growth could be hillock-free for certain orientations. Growths on OP templates achieved stable growth rates of 50-70 mu m/h with domain walls propagating vertically. The growth followed the periodicity of the initial pattern. The maximal thickness achieved to date on OP GaP is about 350 mu m. (C) 2012 Published by Elsevier B.V.
C1 [Tassev, V.; Snure, M.; Peterson, R.; Bedford, R.; Bliss, D.; Bryant, G.; Mann, M.] USAF, Res Lab, Sensors Directorate, Wright Patterson AFB, OH 45433 USA.
   [Goodhue, W.; Vangala, S.; Termkoa, K.] Univ Massachusetts, Photon Ctr, Lowell, MA 01854 USA.
   [Lin, A.; Harris, J. S.; Fejer, M. M.] Stanford Univ, Stanford, CA 94305 USA.
   [Yapp, C.] Solid State Sci Corp, Hollis, NH 03049 USA.
   [Tetlak, S.] Wyle Labs, Aerosp Grp, Dayton, OH 45431 USA.
RP Tassev, V (reprint author), USAF, Res Lab, Sensors Directorate, Wright Patterson AFB, OH 45433 USA.
EM Vladimir.Tassev@hanscom.af.mil
NR 26
TC 7
Z9 7
U1 2
U2 14
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0022-0248
EI 1873-5002
J9 J CRYST GROWTH
JI J. Cryst. Growth
PD AUG 1
PY 2012
VL 352
IS 1
BP 72
EP 77
DI 10.1016/j.jcrysgro.2011.12.077
PG 6
WC Crystallography; Materials Science, Multidisciplinary; Physics, Applied
SC Crystallography; Materials Science; Physics
GA 969WE
UT WOS:000306089300017
ER

PT J
AU Snure, M
   Jimenez, J
   Hortelano, V
   Swider, S
   Mann, M
   Tassev, V
   Lynch, C
   Bliss, D
AF Snure, M.
   Jimenez, J.
   Hortelano, V.
   Swider, S.
   Mann, M.
   Tassev, V.
   Lynch, C.
   Bliss, D.
TI Impurity incorporation in orientation patterned GaAs grown by low
   pressure HVPE
SO JOURNAL OF CRYSTAL GROWTH
LA English
DT Article; Proceedings Paper
CT 18th American Conference on Crystal Growth and Epitaxy (ACCGE)/15th US
   Biennial Workshop on Organometallic Vapor Phase Epitaxy (OMVPE)
CY JUL 31-AUG 05, 2011
CL Monterey, CA
SP Amer Assoc Crystal Growth & Epitaxy (AACGE)
DE Point defects; Hydride vapor phase epitaxy; Nonlinear optic materials;
   Semiconducting Gallium arsenide
ID VAPOR-PHASE EPITAXY; GALLIUM-ARSENIDE; GENERATION; PHOTOLUMINESCENCE;
   TEMPERATURE; LAYERS; FILMS; GE
AB Orientation-patterned GaAs (OP-GaAs) has shown promise as an efficient frequency-shifted laser source over the range of 2-12 mu m. In order to make OP-GaAs a viable source, efficiency and output power must be significantly increased, which requires minimizing major sources of loss. Low pressure HVPE has been adopted as the most suitable technique for regrowth of thick high quality GaAs layers on OP templates. We have explored process parameters in bulk and OP material to identify and control the sources of point defects, a key contributor to optical losses. Growth on OP templates with periodic [001] and [00-1] domains results in domain specific surface orientation, which should have inhomogeneous defect incorporation. Hall measurements, SIMS depth profiling, and cathodoluminescence (CL) were used to identify point defects in bulk and OP-GaAs. It was found that Si impurities are the primary source of donors, while V-Ga were identified as the primary source of acceptors. In order to study the incorporation of impurities in OP-GaAs samples, we intentionally doped samples with Si to increase CL and SIMS detectability. Spatially resolved CL and SIMS revealed regions with significant differences in the defect concentration, which can affect device output. Published by Elsevier B.V.
C1 [Snure, M.; Mann, M.; Tassev, V.; Bliss, D.] USAF, Res Lab, Sensors Directorate, Wright Patterson AFB, OH 45433 USA.
   [Jimenez, J.; Hortelano, V.] Univ Valladolid, OptronLab, Valladolid, Spain.
   [Swider, S.] Cape Simulat, Natick, MA USA.
   [Lynch, C.] Photon Prod Grp Inc, Northvale, NJ USA.
RP Snure, M (reprint author), USAF, Res Lab, Sensors Directorate, 2241 Avion Circle, Wright Patterson AFB, OH 45433 USA.
EM michael.snure@wpafb.af.mil
NR 25
TC 2
Z9 2
U1 2
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 AUG 1
PY 2012
VL 352
IS 1
BP 258
EP 261
DI 10.1016/j.jcrysgro.2011.11.003
PG 4
WC Crystallography; Materials Science, Multidisciplinary; Physics, Applied
SC Crystallography; Materials Science; Physics
GA 969WE
UT WOS:000306089300058
ER

PT J
AU Im, EE
   Stewart, IJ
   Morrow, BD
   Tilley, MA
   Heegard, KD
   Aden, JK
   Chung, KK
   Cotant, CL
AF Im, Ellen E.
   Stewart, Ian J.
   Morrow, Benjamin D.
   Tilley, Molly A.
   Heegard, Kelly D.
   Aden, James K.
   Chung, Kevin K.
   Cotant, Casey L.
TI Retrospective Review of Serum Creatinine and Creatinine-Based Measures
   of Estimated Glomerular Filtration Rate in an Amputee Population
SO MILITARY MEDICINE
LA English
DT Review
AB A variety of equations are used to estimate glomerular filtration rate (eGFR). These formulas have never been validated in the setting of traumatic amputation. In this retrospective study involving 255 military personnel with traumatic amputations at a single outpatient center, muscle mass lost was estimated using percentage of estimated body weight lost (% EBWL). Serum creatinine (Scr) and eGFR by the Modification of Diet in Renal Disease (MDRD) and Chronic Kidney Disease Epidemiology Collaboration (CKD-EPI) equations were compared to % EBWL for each patient. The average Scr for the group studied was also compared with a cohort matched for age, sex, and race from the Third National Health and Nutrition Examination Survey (NHANES 111). Percentage EBWL correlated significantly with Scr (R-2 = 0.095, p < 0.0001), eGFR by MDRD (R-2 = 0.077, p < 0.0001), and eGFR by CKD-EPI (R-2 = 0.074, p < 0.0001). The average Scr was significantly lower than a similar population from NHANES III (0.83 +/- 0.137 mg/dL vs. 1.14 +/- 0.127 mg/dL, p < 0.0001). Percentage EBWL has a significant correlation with Scr and eGFR by both the MDRD and CKD-EPI equations. Furthermore, patients with traumatic amputation have significantly lower Scr values than the general population. Creatinine-based estimators of GFR may overestimate renal function in the setting of traumatic amputation.
C1 [Im, Ellen E.; Stewart, Ian J.; Morrow, Benjamin D.; Tilley, Molly A.; Heegard, Kelly D.; Cotant, Casey L.] San Antonio Mil Med Ctr, Lackland AFB, TX 78236 USA.
   [Aden, James K.; Chung, Kevin K.] US Army Inst Surg Res, Ft Sam Houston, TX 78234 USA.
RP Im, EE (reprint author), San Antonio Mil Med Ctr, 2200 Bergquist Dr,Suite 1,59MDOS SGO5K, Lackland AFB, TX 78236 USA.
NR 20
TC 4
Z9 4
U1 2
U2 3
PU ASSOC MILITARY SURG US
PI BETHESDA
PA 9320 OLD GEORGETOWN RD, BETHESDA, MD 20814 USA
SN 0026-4075
EI 1930-613X
J9 MIL MED
JI Milit. Med.
PD AUG
PY 2012
VL 177
IS 8
BP 952
EP 956
PG 5
WC Medicine, General & Internal
SC General & Internal Medicine
GA V33OA
UT WOS:000209026900015
PM 22934376
ER

PT J
AU Fontanari, JF
   Bonniot-Cabanac, MC
   Cabanac, M
   Perlovsky, LI
AF Fontanari, Jose F.
   Bonniot-Cabanac, Marie-Claude
   Cabanac, Michel
   Perlovsky, Leonid I.
TI A structural model of emotions of cognitive dissonances
SO NEURAL NETWORKS
LA English
DT Article
DE Measure of emotions; Cognitive dissonance; Free-choice paradigm;
   Circumplex model; Pleasure
ID DECISION-MAKING SITUATIONS; NEURAL DYNAMICS; FREE-CHOICE; PLEASURE;
   ALTERNATIVES
AB Cognitive dissonance is the stress that comes from holding two conflicting thoughts simultaneously in the mind, usually arising when people are asked to choose between two detrimental or two beneficial options. In view of the well-established role of emotions in decision making, here we investigate whether the conventional structural models used to represent the relationships among basic emotions, such as the Circumplex model of affect, can describe the emotions of cognitive dissonance as well. We presented a questionnaire to 34 anonymous participants, where each question described a decision to be made among two conflicting motivations and asked the participants to rate analogically the pleasantness and the intensity of the experienced emotion. We found that the results were compatible with the predictions of the Circumplex model for basic emotions. (C) 2012 Elsevier Ltd. All rights reserved.
C1 [Fontanari, Jose F.] Univ Sao Paulo, Inst Fis Sao Carlos, BR-13560970 Sao Carlos, SP, Brazil.
   [Bonniot-Cabanac, Marie-Claude; Cabanac, Michel] Univ Laval, Fac Med, Dept Psychiat & Neurosci, Quebec City, PQ G1K 7P4, Canada.
   [Perlovsky, Leonid I.] Harvard Univ, Cambridge, MA 02138 USA.
   [Perlovsky, Leonid I.] USAF, Res Lab, Wright Patterson AFB, OH 45433 USA.
RP Fontanari, JF (reprint author), Univ Sao Paulo, Inst Fis Sao Carlos, Caixa Postal 369, BR-13560970 Sao Carlos, SP, Brazil.
EM fontanari@ifsc.usp.br; Marie-Claude.Bonniot@fmed.ulaval.ca;
   michel.cabanac@fmed.ulaval.ca; Leonid.Perlovsky@wpafb.af.mil
RI Fontanari, Jose/A-4511-2008; Sao Carlos Institute of Physics,
   IFSC/USP/M-2664-2016
OI Fontanari, Jose/0000-0001-9413-1922; 
FU Southern Office of Aerospace Research and Development (SOARD)
   [FA9550-10-1-0006]; Conselho Nacional de Desenvolvimento Cientifico e
   Tecnologico (CNPq)
FX The research at Sao Carlos was supported by The Southern Office of
   Aerospace Research and Development (SOARD), grant FA9550-10-1-0006, and
   Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq).
NR 39
TC 2
Z9 2
U1 3
U2 29
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0893-6080
J9 NEURAL NETWORKS
JI Neural Netw.
PD AUG
PY 2012
VL 32
SI SI
BP 57
EP 64
DI 10.1016/j.neunet.2012.04.007
PG 8
WC Computer Science, Artificial Intelligence; Neurosciences
SC Computer Science; Neurosciences & Neurology
GA 970WI
UT WOS:000306162600007
PM 22542477
ER

PT J
AU Stohr, M
   Boxx, I
   Carter, CD
   Meier, W
AF Stoehr, Michael
   Boxx, Isaac
   Carter, Campbell D.
   Meier, Wolfgang
TI Experimental study of vortex-flame interaction in a gas turbine model
   combustor
SO COMBUSTION AND FLAME
LA English
DT Article
DE Gas turbine combustion; Turbulent swirl flame; Precessing vortex core;
   Laser diagnostics
ID LARGE-EDDY SIMULATION; TURBULENCE-CHEMISTRY INTERACTIONS;
   SWIRL-STABILIZED COMBUSTOR; DIRECT-INJECTION COMBUSTOR; COHERENT
   STRUCTURES; HEAT RELEASE; PREMIXED COMBUSTOR; ISOTHERMAL FLOW;
   UNSTEADY-FLOW; GT COMBUSTOR
AB The interaction of a helical precessing vortex core (PVC) with turbulent swirl flames in a gas turbine model combustor is studied experimentally. The combustor is operated with air and methane at atmospheric pressure and thermal powers from 10 to 35 kW. The flow field is measured using particle image velocimetry (PIV), and the dominant unsteady vortex structures are determined using proper orthogonal decomposition. For all operating conditions, a PVC is detected in the shear layer of the inner recirculation zone (IRZ). In addition, a co-rotating helical vortex in the outer shear layer (OSL) and a central vortex originating in the exhaust tube are found. OH chemiluminescence (CL) images show that the flames are mainly stabilized in the inner shear layer (ISL), where also the PVC is located. Phase-averaged images of OH-CL show that for all conditions, a major part of heat release takes place in a helical zone that is coupled to the PVC. The mechanisms of the interaction between PVC and flame are then studied for the case P = 10 kW using simultaneous PIV and OH-PLIF measurements with a repetition rate of 5 kHz. The measurements show that the PVC causes a regular sequence of flame roll-up, mixing of burned and unburned gas, and subsequent ignition of the mixture in the ISL. These effects are directly linked to the periodic vortex motions. A phase-averaged analysis of the flow field further shows that the PVC induces an unsteady lower stagnation point that is not present in the average flow field. The motion of the stagnation point is linked to the periodic precession of the PVC. Near this point burned and unburned gas collide frontally and a significant amount of heat release takes place. The flame dynamics near this point is also coupled to the PVC. In this way, a part of the reaction zone is periodically drawn from the stagnation point into the ISL, and thus serves as an ignition source for the reactions in this layer. In total, the effects in the ISL and at the stagnation point showed that the PVC plays an essential role in the stabilization mechanism of the turbulent swirl flames. In contrast to the PVC, the vortices in the OSL and near the exhaust tube have no direct effect on the flame since they are located outside the flame zone. (C) 2012 The Combustion Institute. Published by Elsevier Inc. All rights reserved.
C1 [Stoehr, Michael; Boxx, Isaac; Meier, Wolfgang] German Aerosp Ctr DLR, Inst Combust Technol, D-70569 Stuttgart, Germany.
   [Carter, Campbell D.] USAF, Res Lab, Dayton, OH 45433 USA.
RP Stohr, M (reprint author), German Aerosp Ctr DLR, Inst Combust Technol, Pfaffenwaldring 38-40, D-70569 Stuttgart, Germany.
EM michael.stoehr@dlr.de
NR 90
TC 75
Z9 77
U1 0
U2 42
PU ELSEVIER SCIENCE INC
PI NEW YORK
PA 360 PARK AVE SOUTH, NEW YORK, NY 10010-1710 USA
SN 0010-2180
J9 COMBUST FLAME
JI Combust. Flame
PD AUG
PY 2012
VL 159
IS 8
SI SI
BP 2636
EP 2649
DI 10.1016/j.combustflame.2012.03.020
PG 14
WC Thermodynamics; Energy & Fuels; Engineering, Multidisciplinary;
   Engineering, Chemical; Engineering, Mechanical
SC Thermodynamics; Energy & Fuels; Engineering
GA 969CF
UT WOS:000306032600008
ER

PT J
AU Marinone, T
   Avitabile, P
   Foley, J
   Wolfson, J
AF Marinone, Timothy
   Avitabile, Peter
   Foley, Jason
   Wolfson, Janet
TI Efficient computational nonlinear dynamic analysis using modal
   modification response technique
SO MECHANICAL SYSTEMS AND SIGNAL PROCESSING
LA English
DT Article
DE Nonlinear analysis; Forced nonlinear response; Linear components for
   nonlinear analysis; Modal analysis; Mode superposition
ID SUPERPOSITION
AB Generally, structural systems contain nonlinear characteristics in many cases. These nonlinear systems require significant computational resources for solution of the equations of motion. Much of the model, however, is linear where the nonlinearity results from discrete local elements connecting different components together. Using a component mode synthesis approach, a nonlinear model can be developed by interconnecting these linear components with highly nonlinear connection elements.
   The approach presented in this paper, the Modal Modification Response Technique (MMRT), is a very efficient technique that has been created to address this specific class of nonlinear problem. By utilizing a Structural Dynamics Modification (SDM) approach in conjunction with mode superposition, a significantly smaller set of matrices are required for use in the direct integration of the equations of motion. The approach will be compared to traditional analytical approaches to make evident the usefulness of the technique for a variety of test cases. (C) 2012 Elsevier Ltd. All rights reserved.
C1 [Marinone, Timothy; Avitabile, Peter] Univ Massachusetts Lowell, Struct Dynam & Acoust Syst Lab, Lowell, MA 01854 USA.
   [Foley, Jason; Wolfson, Janet] USAF, Res Lab, Munit Directorate, Fuzes Branch, Eglin AFB, FL 32542 USA.
RP Marinone, T (reprint author), Univ Massachusetts Lowell, Struct Dynam & Acoust Syst Lab, 1 Univ Ave, Lowell, MA 01854 USA.
EM timothy.marinone@gmail.com
FU Air Force Research Laboratory [FA8651-10-1-0009]
FX Some of the work presented herein was partially funded by Air Force
   Research Laboratory Award No. FA8651-10-1-0009 "Development of Dynamic
   Response Modeling Techniques for Linear Modal Components". Any opinions,
   findings, and conclusions or recommendations expressed in this material
   are those of the authors and do not necessarily reflect the views of the
   particular funding agency. The authors are grateful for the support
   obtained.
NR 23
TC 6
Z9 6
U1 2
U2 3
PU ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
PI LONDON
PA 24-28 OVAL RD, LONDON NW1 7DX, ENGLAND
SN 0888-3270
J9 MECH SYST SIGNAL PR
JI Mech. Syst. Signal Proc.
PD AUG
PY 2012
VL 31
BP 67
EP 93
DI 10.1016/j.ymssp.2012.02.011
PG 27
WC Engineering, Mechanical
SC Engineering
GA 966MS
UT WOS:000305842600006
ER

PT J
AU Liu, SB
   Lu, J
   Wu, Q
   Qiu, QR
AF Liu, Shaobo
   Lu, Jun
   Wu, Qing
   Qiu, Qinru
TI Harvesting-Aware Power Management for Real-Time Systems With Renewable
   Energy
SO IEEE TRANSACTIONS ON VERY LARGE SCALE INTEGRATION (VLSI) SYSTEMS
LA English
DT Article
DE Dynamic voltage and frequency selection (DVFS); embedded system; energy
   harvest; power management; real-time; task scheduling
AB In this paper, we propose a harvesting-aware power management algorithm that targets at achieving good energy efficiency and system performance in energy harvesting real-time systems. The proposed algorithm utilizes static and adaptive scheduling techniques combined with dynamic voltage and frequency selection to achieve good system performance under timing and energy constraints. In our approach, we simplify the scheduling and optimization problem by separating constraints in timing and energy domains. The proposed algorithm achieves improved system performance by exploiting task slack with dynamic voltage and frequency selection and minimizing the waste on harvested energy. Experimental results show that the proposed algorithm improves the system performance in deadline miss rate and the minimum storage capacity requirement for zero deadline miss rate. Comparing to the existing algorithms, the proposed algorithm achieves better performance in terms of the deadline miss rate and the minimum storage capacity under various settings of workloads and harvested energy profiles.
C1 [Liu, Shaobo] Marvell Semicond, Marlborough, MA 01752 USA.
   [Lu, Jun; Qiu, Qinru] SUNY Binghamton, Dept Elect & Comp Engn, Binghamton, NY 13902 USA.
   [Wu, Qing] USAF, Res Lab, Rome, NY 13441 USA.
RP Liu, SB (reprint author), Marvell Semicond, Marlborough, MA 01752 USA.
EM lewtiob@gmail.com; jlu5@binghamton.edu; qwu2000@gmail.com;
   qqiu@binghamton.edu
FU National Science Foundation [CNS-0845947]
FX Manuscript received July 06, 2010; revised December 21, 2010 and May 10,
   2011; accepted May 22, 2011. Date of publication July 18, 2011; date of
   current version June 14, 2012. This work was supported by the National
   Science Foundation under Grant CNS-0845947.
NR 32
TC 27
Z9 28
U1 2
U2 4
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 1063-8210
EI 1557-9999
J9 IEEE T VLSI SYST
JI IEEE Trans. Very Large Scale Integr. (VLSI) Syst.
PD AUG
PY 2012
VL 20
IS 8
BP 1473
EP 1486
DI 10.1109/TVLSI.2011.2159820
PG 14
WC Computer Science, Hardware & Architecture; Engineering, Electrical &
   Electronic
SC Computer Science; Engineering
GA 963FP
UT WOS:000305605800012
ER

PT J
AU Miracle, DB
   Laws, K
   Senkov, ON
   Wilks, GB
AF Miracle, Daniel B.
   Laws, Kevin
   Senkov, Oleg N.
   Wilks, Garth B.
TI Partial Coordination Numbers in Binary Metallic Glasses
SO METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND
   MATERIALS SCIENCE
LA English
DT Article; Proceedings Paper
CT 8th Symposium on Bulk Metallic Glasses (BMGs)
CY FEB 27-MAR 03, 2011
CL San Diego, CA
SP Minerals Metals & Mat Soc, TMS, Structural Mat Div, TMS, ASM, Mech Behav Mat Comm
ID STRUCTURAL MODEL; ATOMIC PACKING; ALLOYS
AB A critical analysis of measured partial coordination numbers for binary metallic glasses as a function of composition shows a large scatter of +/- 1.5 but clear trends. The current work uses two topological models to predict the influence of relative atomic size and concentration on partial coordination numbers. The equations for partial coordination numbers derived from these two models can reproduce measured data within experimental scatter, suggesting that chemical effects on local structure, although present, may be relatively small. Insights gained from these models show that structural site-filling rules are different for glasses with solute atoms that are smaller than solvent atoms and for glasses where solute atoms are larger than solvent atoms. Specifically, solutes may occupy both beta and gamma intercluster sites when the solute-to-solvent radius ratio R is less than 1.26, but only beta sites can be occupied by solutes when R > 1.26. This distinction gives a simple topological explanation for the observed preference for binary metallic glasses with solutes smaller than solvent atoms. In addition to structure-specific equations, simplified phenomenological equations for partial coordination numbers are given as a convenience.
C1 [Miracle, Daniel B.; Senkov, Oleg N.] USAF, Res Lab, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA.
   [Laws, Kevin] Univ New S Wales, Sch Mat Sci & Engn, ARC Ctr Excellence Design Light Met, Sydney, NSW 2052, Australia.
   [Senkov, Oleg N.] UES Inc, Dayton, OH 45432 USA.
   [Wilks, Garth B.] UTC Inc, Wright Patterson AFB, OH 45433 USA.
RP Miracle, DB (reprint author), USAF, Res Lab, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA.
EM Daniel.miracle@wpafb.af.mil
RI Senkov, Oleg/C-7197-2012
OI Senkov, Oleg/0000-0001-5587-415X
NR 18
TC 11
Z9 11
U1 1
U2 22
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 1073-5623
EI 1543-1940
J9 METALL MATER TRANS A
JI Metall. Mater. Trans. A-Phys. Metall. Mater. Sci.
PD AUG
PY 2012
VL 43A
IS 8
BP 2649
EP 2661
DI 10.1007/s11661-011-1002-7
PG 13
WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical
   Engineering
SC Materials Science; Metallurgy & Metallurgical Engineering
GA 964YO
UT WOS:000305732900017
ER

PT J
AU Tucker, JC
   Chan, LH
   Rohrer, GS
   Groeber, MA
   Rollett, AD
AF Tucker, Joseph C.
   Chan, Lisa H.
   Rohrer, Gregory S.
   Groeber, Michael A.
   Rollett, Anthony D.
TI Tail Departure of Log-Normal Grain Size Distributions in Synthetic
   Three-Dimensional Microstructures
SO METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND
   MATERIALS SCIENCE
LA English
DT Article; Proceedings Paper
CT Symposium on Fatigue and Corrosion Damage in Metallic Materials
CY FEB 27-MAR 03, 2011
CL San Diego, CA
SP Minerals Metals & Mat Soc, TMS, Structural Mat Div
ID UNIDIRECTIONAL COMPOSITE MICROSTRUCTURES; POLYCRYSTALLINE MICRO
   STRUCTURES; REPRESENTATIVE VOLUME ELEMENTS; RANDOM DISORIENTATION;
   AUTOMATED-ANALYSIS; 3D; SIMULATION; RECONSTRUCTION; FRAMEWORK; SECTIONS
AB Polycrystalline materials are generally thought to have grain size distributions that correspond to log-normal. Statistical volume elements can use such geometric shape distributions to simulate single-phase polycrystals. When the log-normal distribution is used for grain size, however, it can give rise to nonphysical large grains that cannot be practically accommodated in finite simulation volumes. The application of other distributions that afford better control of the upper tails, e.g., truncated distributions, resolves the problem and allows more representative distributions to be generated. These points are illustrated with an example of generation of a synthetic three-dimensional (3-D) microstructure to represent the nickel-based superalloy Inconel 100, which exhibits significant upper tail departure from log-normal. Twin insertion, to represent annealing twins, will also be discussed.
C1 [Tucker, Joseph C.; Rohrer, Gregory S.; Rollett, Anthony D.] Carnegie Mellon Univ, Dept Mat Sci & Engn, Pittsburgh, PA 15213 USA.
   [Chan, Lisa H.] EDAX Inc, Mahwah, NJ 07430 USA.
   [Groeber, Michael A.] USAF, Res Lab, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA.
RP Tucker, JC (reprint author), Carnegie Mellon Univ, Dept Mat Sci & Engn, 5000 Forbes Ave, Pittsburgh, PA 15213 USA.
EM josephtu@andrew.cmu.edu
RI Tucker, Joseph/F-3393-2014; Rollett, Anthony/A-4096-2012; Rohrer,
   Gregory/A-9420-2008
OI Tucker, Joseph/0000-0002-7214-9272; Rollett,
   Anthony/0000-0003-4445-2191; Rohrer, Gregory/0000-0002-9671-3034
NR 34
TC 8
Z9 8
U1 1
U2 15
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 1073-5623
J9 METALL MATER TRANS A
JI Metall. Mater. Trans. A-Phys. Metall. Mater. Sci.
PD AUG
PY 2012
VL 43A
IS 8
BP 2810
EP 2822
DI 10.1007/s11661-011-0851-4
PG 13
WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical
   Engineering
SC Materials Science; Metallurgy & Metallurgical Engineering
GA 964YO
UT WOS:000305732900036
ER

PT J
AU Tseng, CC
   Swanson, AD
   Viskanta, R
   Sikorski, RL
   Chen, MY
AF Tseng, Charles C.
   Swanson, Andrew D.
   Viskanta, Raymond
   Sikorski, Ruth L.
   Chen, Ming Y.
TI Effect of foam properties on radiative properties of open-cell silicon
   carbide foams
SO JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER
LA English
DT Article
DE Open-cell foam; Extinction coefficient; Asymmetric factor; Scattering
   albedo; Radiative properties; Thermal protection
ID HEAT-TRANSFER; INSULATION
AB Low density and small-cell size foams can be used in thermal protection and/or thermal insulation systems. At high temperature ( > 1000 K) thermal radiation may be important or dominate heat transfer in the foam; however, studies based on more detailed thermal radiation analysis are limited due to the lack of detailed information on radiative properties of foams. Of particular interest of this study is to understand how the properties of foam material such as its density and mean cell size affect the radiative properties of silicon carbide (SiC) foams. In this paper, the dimensionless strut diameter is considered as an important parameter of foams, and the radiative properties of foams are analyzed using the Mie scattering theory. Also, the spectral extinction coefficients of SiC foams are measured experimentally in the laboratory at room temperature. The mean radiative properties are calculated at 1000 K and compared with theoretical calculations, and the data are found to agree well with the predictions. The attenuation/extinction behavior of SiC foams can be characterized by the approach presented in this study. The results should be useful for applications of foams at high temperature. (C) 2012 Published by Elsevier Ltd.
C1 [Chen, Ming Y.] USAF, Res Lab, AFRL RXBC, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA.
   [Tseng, Charles C.; Swanson, Andrew D.] USAF, Res Lab, AFRL RBSA, Air Vehicles Directorate, Wright Patterson AFB, OH 45433 USA.
   [Viskanta, Raymond] Purdue Univ, Sch Mech Engn, W Lafayette, IN 47907 USA.
   [Sikorski, Ruth L.] USAF, Res Lab, AFRL RZTS, Prop Directorate, Wright Patterson AFB, OH 45433 USA.
RP Chen, MY (reprint author), USAF, Res Lab, AFRL RXBC, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA.
EM Ming-Yung.Chen@wpafb.af.mil
FU Air Force Research Laboratory at Wright-Patterson AFB [FA8650-10-D-3037]
FX This study was supported by the Air Force Research Laboratory at
   Wright-Patterson AFB under the contract number of FA8650-10-D-3037. This
   work was supported in part by a grant of computer time from the DOD High
   Performance Computing Modernization Program at the Air Force Research
   Laboratory at Wright-Patterson AFB.
NR 9
TC 7
Z9 8
U1 1
U2 15
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0022-4073
J9 J QUANT SPECTROSC RA
JI J. Quant. Spectrosc. Radiat. Transf.
PD AUG
PY 2012
VL 113
IS 12
BP 1503
EP 1507
DI 10.1016/j.jqsrt.2012.03.009
PG 5
WC Optics; Spectroscopy
SC Optics; Spectroscopy
GA 961TZ
UT WOS:000305493700010
ER

PT J
AU Hui, X
   Kumar, K
   Sung, CJ
   Edwards, T
   Gardner, D
AF Hui, Xin
   Kumar, Kamal
   Sung, Chih-Jen
   Edwards, Tim
   Gardner, Dylan
TI Experimental studies on the combustion characteristics of alternative
   jet fuels
SO FUEL
LA English
DT Article
DE Alternative fuels; Autoignition; Laminar flame speed; Extinction limit;
   Derived Cetane Number
ID LAMINAR FLAME SPEEDS; EXTINCTION; KINETICS; TOLUENE
AB Conventional Jet-A and six alternative jet fuels, including three Fischer-Tropsch "Synthetic Paraffinic Kerosene" (SPK) fuels and three "Hydrotreated Renewable Jet" (HRJ) fuels, have been experimentally investigated to obtain their fundamental combustion characteristics in terms of Derived Cetane Number (DCN), autoignition response, laminar flame speed, and extinction stretch rate for premixed combustion. The ignition delay times and DCNs for each jet fuel and selected binary blends of Jet-A and alternative jet fuel were determined by using a Fuel Ignition Tester in accordance with the ASTM D7170 method. In addition, the autoignition response for fuel/air mixtures was recorded and compared in a heated Rapid Compression Machine, conducted at an air-to-fuel mass ratio of 13 and under a compressed pressure of 22 bar. By changing the compression ratio and initial temperature, the trend of autoignition behavior over a range of compressed temperatures was studied. Atmospheric laminar flame speeds and extinction stretch rates were also measured in the premixed twin-flame configuration by using a counterflow burner. The flame data at two unburned mixture temperatures of 400 K and 470 K were reported respectively over an equivalence ratio range of phi = 0.7-1.4 for the laminar flame speeds and of phi = 0.9-1.6 for the extinction stretch rate measurements. The comparison of fundamental combustion properties for Jet-A and various alternative jet fuels provides insights into understanding the impact of fuel properties on combustion performance and developing a cost-effective combustion testing program that includes fundamental characterization. (C) 2012 Elsevier Ltd. All rights reserved.
C1 [Kumar, Kamal; Sung, Chih-Jen; Gardner, Dylan] Univ Connecticut, Dept Mech Engn, Storrs, CT 06269 USA.
   [Hui, Xin] Case Western Reserve Univ, Dept Mech & Aerosp Engn, Cleveland, OH 44106 USA.
   [Edwards, Tim] USAF, Res Lab, Wright Patterson AFB, OH 45433 USA.
RP Kumar, K (reprint author), Univ Connecticut, Dept Mech Engn, 191 Auditorium Rd, Storrs, CT 06269 USA.
EM kamal@engr.uconn.edu
OI Kumar, Kamal/0000-0002-3923-8740
FU Air Force Office of Scientific Research [FA9550-07-1-0515]
FX This work has been supported by the Air Force Office of Scientific
   Research under Grant No. FA9550-07-1-0515.
NR 34
TC 44
Z9 46
U1 4
U2 53
PU ELSEVIER SCI LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
SN 0016-2361
J9 FUEL
JI Fuel
PD AUG
PY 2012
VL 98
BP 176
EP 182
DI 10.1016/j.fuel.2012.03.040
PG 7
WC Energy & Fuels; Engineering, Chemical
SC Energy & Fuels; Engineering
GA 957HF
UT WOS:000305150300022
ER

PT J
AU Kalyanam, K
   Tsao, TC
AF Kalyanam, Krishnamoorthy
   Tsao, Tsu-Chin
TI Two-Period Repetitive and Adaptive Control for Repeatable and
   Nonrepeatable Runout Compensation in Disk Drive Track Following
SO IEEE-ASME TRANSACTIONS ON MECHATRONICS
LA English
DT Article
DE Adaptive control; hard disks; servosystems
ID DISTURBANCE REJECTION; TUTORIAL; FILTER; SYSTEM; SERVO
AB This paper presents the design and implementation of an integrated two-period repetitive and adaptive control scheme to reject both repeatable and nonrepeatable disturbances in the track-following servo control of a hard disk drive read-write head. A baseline linear quadratic Gaussian controller is augmented by a plug-in repetitive controller to reject periodic disturbances with two periods, one that is synchronized with the disk rotation and the other that is not, and an additional adaptive-Q control scheme to reject the remaining aperiodic and random disturbances. The adaptive-Q control algorithm uses the well-known result that all stabilizing controllers for a plant can be synthesized by conveniently parameterized augmentation to a nominal controller. The Q-filter is restricted to a finite impulse response filter, which minimizes the root-mean-square value of the track-following error. Experimental results show substantial performance improvement for the two-stage augmented controller over the single-stage repetitive or adaptive-Q control acting alone.
C1 [Tsao, Tsu-Chin] Univ Calif Los Angeles, Dept Mech & Aerosp Engn, Los Angeles, CA 90095 USA.
RP Kalyanam, K (reprint author), USAF, Res Lab, Control Design & Anal Branch, Wright Patterson AFB, OH 45433 USA.
EM krishnak@ucla.edu; ttsao@ucla.edu
FU National Science Foundation [DMI 0327077, CMMI 0751621]
FX Manuscript received May 8, 2010; revised August 12, 2010, November 19,
   2010, and March 10, 2011; accepted March 11, 2011. Date of publication
   April 21, 2011; date of current version May 4, 2012. Recommended by
   Technical Editor J. Xu. This work was supported in part by the National
   Science Foundation under Grant DMI 0327077 and Grant CMMI 0751621. This
   paper was presented in part at the IEEE/ASME International Conference on
   Advanced Intelligent Mechatronics, Monterey, CA, July 2005.
NR 34
TC 7
Z9 7
U1 0
U2 8
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 1083-4435
J9 IEEE-ASME T MECH
JI IEEE-ASME Trans. Mechatron.
PD AUG
PY 2012
VL 17
IS 4
BP 756
EP 766
DI 10.1109/TMECH.2011.2130533
PG 11
WC Automation & Control Systems; Engineering, Manufacturing; Engineering,
   Electrical & Electronic; Engineering, Mechanical
SC Automation & Control Systems; Engineering
GA 940LT
UT WOS:000303891700017
ER

PT J
AU Kumar, P
   LeBlanc, J
   Stargel, DS
   Shukla, A
AF Kumar, Puneet
   LeBlanc, James
   Stargel, David S.
   Shukla, Arun
TI Effect of plate curvature on blast response of aluminum panels
SO INTERNATIONAL JOURNAL OF IMPACT ENGINEERING
LA English
DT Article
DE Plate curvature; Aluminum panels; Blast loading; Digital image
   correlation; Numerical simulation
ID INELASTIC DEFORMATION; DYNAMIC-RESPONSE; LOADED PLATES; SQUARE PLATES;
   WALL PANELS; FAILURE
AB Experimental and numerical studies were conducted to understand the effect of plate curvature on blast response of aluminum panels. A shock tube apparatus was utilized to impart controlled shock loading to aluminum 2024-T3 panels having three different radii of curvatures: infinity (panel A), 304.8 mm (panel B), and 111.8 mm (panel C). Panels with dimensions of 203.2 mm x 203.2 mm x 2 mm were held with mixed boundary conditions before applying the shock loading. A 3D Digital Image Correlation (DIC) technique coupled with high speed photography was used to obtain out-of-plane deflection and velocity, as well as in-plane strain on the back face of the panels. Macroscopic postmortem analysis was performed to compare the yielding and plastic deformation in the three panels. The results showed that panel C had the least plastic deformation and yielding as compared to the other panels. A dynamic computational simulation that incorporates the fluid-structure interaction was also conducted to evaluate the panel response. The computational study utilized the Dynamic System Mechanics Analysis Simulation (DYSMAS) software. The model consisted of the shock tube wall, the aluminum plate, and the air (both internal and external) to the tube walls. The numerical results were compared to the experimental data. The comparison between the experimental results and the numerical simulation showed a high level of correlation using the Russell error measure. (C) 2012 Elsevier Ltd. All rights reserved.
C1 [Kumar, Puneet; Shukla, Arun] Univ Rhode Isl, Dept Mech Ind & Syst Engn, Dynam Photomech Lab, Kingston, RI 02881 USA.
   [LeBlanc, James] USN, Undersea Warfare Ctr, Div Newport, Newport, RI 02841 USA.
   [Stargel, David S.] USAF, Off Sci Res Aerosp Chem & Mat Sci, Arlington, VA 22203 USA.
RP Shukla, A (reprint author), Univ Rhode Isl, Dept Mech Ind & Syst Engn, Dynam Photomech Lab, Kingston, RI 02881 USA.
EM shuklaa@egr.uri.edu
FU Department of Homeland Security (DHS) [2008-ST-061-ED0002]; Naval
   Undersea Warfare Center, Division Newport through NUWC
FX The authors acknowledge the financial support provided by the Department
   of Homeland Security (DHS) under Cooperative Agreement No.
   2008-ST-061-ED0002. James LeBlanc acknowledges the financial support of
   the Naval Undersea Warfare Center, Division Newport through the NUWC
   Fellowship Program.
NR 21
TC 27
Z9 27
U1 2
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 AUG
PY 2012
VL 46
BP 74
EP 85
DI 10.1016/j.ijimpeng.2012.02.004
PG 12
WC Engineering, Mechanical; Mechanics
SC Engineering; Mechanics
GA 930YD
UT WOS:000303179800007
ER

PT J
AU Carpenter, JS
   Misra, A
   Uchic, MD
   Anderson, PM
AF Carpenter, J. S.
   Misra, A.
   Uchic, M. D.
   Anderson, P. M.
TI Strain rate sensitivity and activation volume of Cu/Ni metallic
   multilayer thin films measured via micropillar compression
SO APPLIED PHYSICS LETTERS
LA English
DT Article
ID NANOLAYERED COMPOSITES; DEFORMATION MECHANISMS; NANOCRYSTALLINE; CU; NI;
   MICROSTRUCTURES; HARDNESS; TWINS; FCC
AB Micropillar compression testing with repeated jumps in strain rate is used to circumvent inherent difficulties associated with nanoindentation and tensile testing of free-standing films. Application to sputtered 21 nm/21 nm Cu/Ni multilayer thin films with a cube-on-cube texture reveals an average strain rate sensitivity (m = 0.014) and activation volume (V = 17 b(3)), comparable to nanocrystalline face-centered cubic metals. Yet, m increases by similar to 50% and V decreases by 70% with increasing strain, opposite to trends reported for nanotwinned Cu. The large, strain-dependent shifts in m and V are dependent on the underlying misfit dislocation structure of Cu/Ni interfaces. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4739521]
C1 [Carpenter, J. S.] Los Alamos Natl Lab, MST Met 6, Los Alamos, NM 87544 USA.
   [Carpenter, J. S.; Misra, A.] Los Alamos Natl Lab, MPA CINT Ctr Integrated Nanotechnol, Los Alamos, NM 87544 USA.
   [Carpenter, J. S.; Anderson, P. M.] Ohio State Univ, Dept Mat Sci & Engn, Columbus, OH 43210 USA.
   [Uchic, M. D.] USAF, Mat & Mfg Directorate, Res Lab, Dayton, OH 45433 USA.
RP Carpenter, JS (reprint author), Los Alamos Natl Lab, MST Met 6, POB 1663, Los Alamos, NM 87544 USA.
RI Misra, Amit/H-1087-2012; Anderson, Peter/J-8315-2014; 
OI Carpenter, John/0000-0001-8821-043X
FU National Science Foundation (Division of Materials Research)
   [DMR-0907024]; National Nuclear Security Administration of the U.S.
   Department of Energy [DE-AC52-06NA25396]
FX The authors gratefully acknowledge Dr. N.A. Mara for useful discussion,
   J. Kevin Baldwin for the fabrication of the multilayer used in this
   study, and Dr. E. Andrew Payzant and the Center for Nanophase Materials
   Science (Oak Ridge National Laboratory) for XRD analysis. The authors
   also acknowledge the National Science Foundation (Division of Materials
   Research DMR-0907024, Eric Taleff, Program Officer) for financial
   support. This work was performed, in part, at the Center for Integrated
   Nanotechnologies, a U.S. Department of Energy, Office of Basic Energy
   Sciences user facility. Los Alamos National Laboratory, an affirmative
   action equal opportunity employer, is operated by Los Alamos National
   Security, LLC, for the National Nuclear Security Administration of the
   U.S. Department of Energy under contract DE-AC52-06NA25396.
NR 26
TC 16
Z9 16
U1 2
U2 88
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 JUL 30
PY 2012
VL 101
IS 5
AR 051901
DI 10.1063/1.4739521
PG 4
WC Physics, Applied
SC Physics
GA 991BU
UT WOS:000307676600024
ER

PT J
AU Plews, J
   Duarte, CA
   Eason, T
AF Plews, J.
   Duarte, C. A.
   Eason, T.
TI An improved nonintrusive global-local approach for sharp thermal
   gradients in a standard FEA platform
SO INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN ENGINEERING
LA English
DT Article
DE generalized FEM; hp-FEM; multiscale problems; partition of unity method;
   X-FEM
ID FINITE-ELEMENT-METHOD; MECHANICS PROBLEMS; CRACK-GROWTH; PARTITION;
   MESHES
AB Several classes of important engineering problemsin this case, problems exhibiting sharp thermal gradientshave solution features spanning multiple spatial scales and, therefore, necessitate advanced hp finite element discretizations. Although hp-FEM is unavailable off-the-shelf in many predominant commercial analysis software packages, the authors herein propose a novel method to introduce these capabilities via a generalized FEM nonintrusively in a standard finite element analysis (FEA) platform. The methodology is demonstrated on two verification problems as well as a representative, industrial-scale problem. Numerical results show that the techniques utilized allow for accurate resolution of localized thermal features on structural-scale meshes without hp-adaptivity or the ability to account for complex and very localized loads in the FEA code itself. This methodology enables the user to take advantage of all the benefits of both hp-FEM discretizations and the appealing features of many available computer-aided engineering /FEA software packages to obtain optimal convergence for challenging multiscale problems. Copyright (C) 2012 John Wiley & Sons, Ltd.
C1 [Plews, J.; Duarte, C. A.] Univ Illinois, Newmark Lab, Dept Civil & Environm Engn, Urbana, IL 61801 USA.
   [Eason, T.] USAF, Res Lab, Air Vehicles Directorate, Dayton, OH USA.
RP Duarte, CA (reprint author), Univ Illinois, Newmark Lab, Dept Civil & Environm Engn, 205 N Mathews Ave, Urbana, IL 61801 USA.
EM caduarte@illinois.edu
FU US Air Force Research Laboratory, Air Vehicles Directorate
   [FA8650-06-2-3620]
FX The authors gratefully acknowledge the contributions of the Midwest
   Structural Sciences Center (MSSC) at the University of Illinois at
   Urbana-Champaign. The center is supported by the US Air Force Research
   Laboratory, Air Vehicles Directorate, under contract number
   FA8650-06-2-3620.
NR 51
TC 1
Z9 1
U1 1
U2 7
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 0029-5981
J9 INT J NUMER METH ENG
JI Int. J. Numer. Methods Eng.
PD JUL 27
PY 2012
VL 91
IS 4
BP 426
EP 449
DI 10.1002/nme.4279
PG 24
WC Engineering, Multidisciplinary; Mathematics, Interdisciplinary
   Applications
SC Engineering; Mathematics
GA 965BS
UT WOS:000305741700005
ER

PT J
AU Lu, WJ
   Barbosa, R
   Clarke, E
   Eyink, K
   Grazulis, L
   Mitchel, WC
   Boeckl, JJ
AF Lu, Weijie
   Barbosa, Roland
   Clarke, Edwina
   Eyink, Kurt
   Grazulis, Lawrence
   Mitchel, William C.
   Boeckl, John J.
TI Interface Oxidative Structural Transitions in Graphene Growth on SiC
   (0001)
SO JOURNAL OF PHYSICAL CHEMISTRY C
LA English
DT Article
ID EPITAXIAL GRAPHENE; SILICON-CARBIDE; SIC(0001); GRAPHITE;
   GRAPHITIZATION; 6H-SIC(0001); MICROSCOPY; SURFACE; OXYGEN; LAYERS
AB The structural transition from a three-dimensional SiC lattice to a two-dimensional graphene sheet is a crucial element in the growth mechanism of graphene on SiC. An interfacial defective transition layer near the surface of the SiC substrate is believed to be an intermediate structure for graphene layer formation. The transition layer consists of SiOxCy, vacancies, and other defects in the SiC lattice, which result from Si evaporation via thermal degradation of the SiC lattice and oxidation reactions of residual oxygen and other oxygen containing molecules on the SiC surface at high temperatures. This partially oxidized and structurally degraded SiC lattice layer is formed at temperatures lower than the graphene growth temperature but then decomposes with increasing temperature, leading graphene formation. Then, the growth mechanism for graphene on SiC (0001) in high vacuum consists of multiple steps, including Si removal by thermal decomposition and oxidation, collapsing of the near surface SiC lattice, conversion from sp(3) to sp(2) carbon, and an increase in the degree of low-dimensional graphitization. The proposed atomic scale mechanism is able to explain experimental phenomena in graphene/SiC structural growth, such as graphene coverage at step edges, growth environment effects, graphene domain size, and thickness variations.
C1 [Lu, Weijie; Eyink, Kurt; Grazulis, Lawrence; Mitchel, William C.; Boeckl, John J.] USAF, Mat & Mfg Directorate, AFRL RXPS, Res Lab, Wright Patterson AFB, OH 45433 USA.
   [Barbosa, Roland] Univ Libre Brussels, B-1050 Brussels, Belgium.
   [Clarke, Edwina] Univ Alabama, Dept Biol Sci, Tuscaloosa, AL 35487 USA.
   [Lu, Weijie; Barbosa, Roland; Clarke, Edwina] Fisk Univ, Dept Chem, Nashville, TN USA.
RP Lu, WJ (reprint author), USAF, Mat & Mfg Directorate, AFRL RXPS, Res Lab, Wright Patterson AFB, OH 45433 USA.
EM weijie.lu.ctr@wpafb.af.mil
FU AFOSR; Laboratory Director Funds (LWF) of Air Force Research Laboratory
FX The authors acknowledge the support of AFOSR (Dr. Charles Lee) and of
   the Laboratory Director Funds (LWF) of Air Force Research Laboratory.
NR 29
TC 2
Z9 2
U1 3
U2 20
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 JUL 26
PY 2012
VL 116
IS 29
BP 15342
EP 15347
DI 10.1021/jp301996h
PG 6
WC Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science,
   Multidisciplinary
SC Chemistry; Science & Technology - Other Topics; Materials Science
GA 978FE
UT WOS:000306725200018
ER

PT J
AU Akala, AO
   Doherty, PH
   Carrano, CS
   Valladares, CE
   Groves, KM
AF Akala, A. O.
   Doherty, P. H.
   Carrano, C. S.
   Valladares, C. E.
   Groves, K. M.
TI Impacts of ionospheric scintillations on GPS receivers intended for
   equatorial aviation applications
SO RADIO SCIENCE
LA English
DT Article
ID AMPLITUDE SCINTILLATIONS; PHASE TRACKING; SYSTEM; AVAILABILITY;
   MIDLATITUDES; PERIODS; LOOPS
AB This study examines the impacts of ionospheric scintillations on GPS receivers that are intended for equatorial or transequatorial aviation applications. We analyzed GPS data that were acquired at Ascension Island during the Air Force Research Laboratory (AFRL) campaign of the solar maximum year of 2002. Strong scintillations impacted the receiver-satellite geometry, leading to poor dilution of precisions and positioning accuracy. In addition, deep signal fades (>20 dB-Hz), leading to navigation outages were observed during most of the nights of the campaign. Under quiescent conditions, the C/No of satellites fluctuated slowly between 50 dB-Hz and 35 dB-Hz baselines for both L1 (1.5754 GHz) and L2 (1.2276 GHz) signals, depending on the satellite's elevation angle. The satellite's elevation angle and the effective scan velocity of the satellite's ionospheric penetration point (IPP) with respect to the magnetic field and plasma drift influenced the rate of fading of satellite signals.
C1 [Akala, A. O.] Univ Lagos, Dept Phys, Lagos, Nigeria.
   [Akala, A. O.; Doherty, P. H.; Carrano, C. S.; Valladares, C. E.] Boston Coll, Inst Sci Res, Chestnut Hill, MA 02167 USA.
   [Groves, K. M.] USAF, Res Lab, Hanscom AFB, MA USA.
RP Akala, AO (reprint author), Univ Lagos, Dept Phys, Lagos, Nigeria.
EM akalaovie2004@yahoo.com
FU U.S. Government
FX The first author thanks the U.S. Government for the Fulbright
   Scholarship grant, and the Institute for Scientific Research, Boston
   College for hosting him. The authors thank Christopher Hegarty of MITRE
   Corporation for his useful discussions on VPL/HPL for APV operations.
NR 47
TC 14
Z9 14
U1 1
U2 10
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 0048-6604
J9 RADIO SCI
JI Radio Sci.
PD JUL 25
PY 2012
VL 47
AR RS4007
DI 10.1029/2012RS004995
PG 11
WC Astronomy & Astrophysics; Geochemistry & Geophysics; Meteorology &
   Atmospheric Sciences; Remote Sensing; Telecommunications
SC Astronomy & Astrophysics; Geochemistry & Geophysics; Meteorology &
   Atmospheric Sciences; Remote Sensing; Telecommunications
GA 980SB
UT WOS:000306912200001
ER

PT J
AU Bostick, RL
   Perram, GP
AF Bostick, Randall L.
   Perram, Glen P.
TI Instrumental error in chromotomosynthetic hyperspectral imaging
SO APPLIED OPTICS
LA English
DT Article
ID RECONSTRUCTION ALGORITHMS; CIRCULAR TOMOSYNTHESIS; DIGITAL
   TOMOSYNTHESIS; IMPULSE-RESPONSE; SPECTRAL IMAGER; BREAST; RESTORATION;
   TOMOGRAPHY
AB Chromotomosynthetic imaging (CTI) is a method of convolving spatial and spectral information that can be reconstructed into a hyperspectral image cube using the same transforms employed in medical tomosynthesis. A direct vision prism instrument operating in the visible (400-725 nm) with 0.6 mrad instantaneous field of view (IFOV) and 0.6-10 nm spectral resolution has been constructed and characterized. Reconstruction of hyperspectral data cubes requires an estimation of the instrument component properties that define the forward transform. We analyze the systematic instrumental error in collected projection data resulting from prism spectral dispersion, prism alignment, detector array position, and prism rotation angle. The shifting and broadening of both the spectral lineshape function and the spatial point spread function in the reconstructed hyperspectral imagery is compared with experimental results for monochromatic point sources. The shorter wavelength (lambda < 500 nm) region where the prism has the highest spectral dispersion suffers mostly from degradation of spectral resolution in the presence of systematic error, while longer wavelengths (lambda > 600 nm) suffer mostly from a shift of the spectral peaks. The quality of the reconstructed hyperspectral imagery is most sensitive to the misalignment of the prism rotation mount. With less than 1 degrees total angular error in the two axes of freedom, spectral resolution was degraded by as much as a factor of 2 in the blue spectral region. For larger errors than this, spectral peaks begin to split into bimodal distributions, and spatial point response functions are reconstructed in rings with radii proportional to wavelength and spatial resolution.
C1 [Bostick, Randall L.; Perram, Glen P.] USAF, Inst Technol, Dept Engn Phys, Wright Patterson AFB, OH 45433 USA.
RP Perram, GP (reprint author), USAF, Inst Technol, Dept Engn Phys, 2950 Hobson Way, Wright Patterson AFB, OH 45433 USA.
EM glen.perram@afit.edu
OI Perram, Glen/0000-0002-4417-3929
NR 31
TC 4
Z9 4
U1 0
U2 7
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 JUL 20
PY 2012
VL 51
IS 21
BP 5186
EP 5200
DI 10.1364/AO.51.005186
PG 15
WC Optics
SC Optics
GA 977LI
UT WOS:000306661800032
PM 22858961
ER

PT J
AU Peloquin, AJ
   Stone, RL
   Avila, SE
   Rudico, ER
   Horn, CB
   Gardner, KA
   Ball, DW
   Johnson, JEB
   Iacono, ST
   Balaich, GJ
AF Peloquin, Andrew J.
   Stone, Rebecca L.
   Avila, Sarah E.
   Rudico, Erlyn R.
   Horn, Christopher B.
   Gardner, Kim A.
   Ball, David W.
   Johnson, Jane E. B.
   Iacono, Scott T.
   Balaich, Gary J.
TI Synthesis of 1,3-Diphenyl-6-alkyl/aryl-Substituted Fulvene Chromophores:
   Observation of pi-pi Interactions in a 6-Pyrene-Substituted
   1,3-Diphenylfulvene
SO JOURNAL OF ORGANIC CHEMISTRY
LA English
DT Article
ID STRUCTURAL-CHARACTERIZATION; COMPLEXES; PYRENE; STACKING; LIGANDS; BONDS
AB The synthesis, structural, and electronic properties of nine 1,3-diphenyl-6-alkyl/aryl substituted pentafulvenes were studied. Pyrene ring pi-pi interactions were revealed from analysis of the experimental crystal packing of 1,3-diphenyl-6-(1-pyrene)fulvene and supporting DFT calculations. Photo-physical properties derived from UV-vis and fluorescence emission measurements demonstrated tunable and low HOMO-LUMO band gaps for the series. The presented results point to a model synthetic approach for incorporation of extended pi systems and donor-pi-acceptor groups for fulvene-based electronic materials.
C1 [Peloquin, Andrew J.; Stone, Rebecca L.; Avila, Sarah E.; Rudico, Erlyn R.; Horn, Christopher B.; Gardner, Kim A.; Johnson, Jane E. B.; Iacono, Scott T.; Balaich, Gary J.] USAF Acad, Dept Chem, Colorado Springs, CO 80840 USA.
   [Ball, David W.] Cleveland State Univ, Dept Chem, Cleveland, OH 44115 USA.
RP Balaich, GJ (reprint author), USAF Acad, Dept Chem, Colorado Springs, CO 80840 USA.
EM gary.balaich@usafa.edu
FU Air Force Office of Scientific Research; Department of Chemistry, USAF
   Academy
FX We dedicate this paper to Professor John S. Wilkes who recently retired
   from his position as Director, Chemistry Research Center, USAF Academy.
   John is a renowned ionic-liquids chemist and will be deeply missed. It
   has been a great experience working with him over the years. We
   acknowledge the Air Force Office of Scientific Research and the
   Department of Chemistry, USAF Academy, for funding.
NR 27
TC 8
Z9 8
U1 1
U2 13
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 JUL 20
PY 2012
VL 77
IS 14
BP 6371
EP 6376
DI 10.1021/jo301101x
PG 6
WC Chemistry, Organic
SC Chemistry
GA 975TM
UT WOS:000306534400056
PM 22747487
ER

PT J
AU Carrano, CS
   Groves, KM
   Caton, RG
AF Carrano, Charles S.
   Groves, Keith M.
   Caton, Ronald G.
TI The effect of phase scintillations on the accuracy of phase screen
   simulation using deterministic screens derived from GPS and ALTAIR
   measurements
SO RADIO SCIENCE
LA English
DT Article
ID TOTAL ELECTRON-CONTENT; IONOSPHERIC SCINTILLATION; RADIOWAVE
   SCINTILLATION; MODEL; IRREGULARITIES; FLUCTUATIONS; BUBBLES
AB Radio receivers capable of high-rate sampling such as GPS scintillation monitors and the ALTAIR VHF/UHF tracking radar can measure ionospheric phase fluctuations suitable for scintillation modeling using phase screen techniques. For modeling purposes, the phase variations caused by the refractive effects of electron density irregularities encountered along the propagation path are desired. The phase fluctuations measured by ground-based receivers, however, also include the unwanted effects of diffraction (phase scintillations). In this paper, we investigate the effect of phase scintillations on the accuracy of phase screen simulation when using the phase measured on the ground as a proxy for the ionospheric screen. Using stochastic and deterministic (measured) phase screens, we quantitatively assess the accuracy of this approach by cross-correlating the predicted and measured intensity fluctuations. We find that the intensity cross-correlation is less than unity even in the weak scatter limit, due to the presence of weak phase scintillations. This correlation decreases rapidly with increasing irregularity strength once rapid transitions in the phase (strong phase scintillations) develop. We demonstrate that, when using the measured phase on the ground as a proxy for the ionospheric screen, both the temporal structure of simulated fluctuations and their statistics deviate increasingly from those of the measurements as the turbulence strength increases, especially when strong phase scintillations are present. We also demonstrate that back-propagating the complex signal up to ionospheric altitudes prior to the forward propagation calculation yields improved results, but some errors still remain as a consequence of neglecting amplitude fluctuations which develop inside the random medium.
C1 [Carrano, Charles S.] Boston Coll, Inst Sci Res, Boston, MA 02467 USA.
   [Groves, Keith M.] USAF, Res Lab, Space Vehicles Directorate, Hanscom AFB, MA USA.
   [Caton, Ronald G.] USAF, Res Lab, Space Vehicles Directorate, Kirtland AFB, NM USA.
RP Carrano, CS (reprint author), Boston Coll, Inst Sci Res, Boston, MA 02467 USA.
EM charles.carrano@bc.edu
OI Carrano, Charles/0000-0003-1317-2453
FU Air Force contract [FA8718-09-C-0041]
FX The authors would like to thank Charles Rino and the two anonymous
   reviewers for their comments and suggestions which have significantly
   improved this paper. This work was sponsored by Air Force contract
   FA8718-09-C-0041.
NR 29
TC 5
Z9 5
U1 0
U2 6
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 0048-6604
J9 RADIO SCI
JI Radio Sci.
PD JUL 20
PY 2012
VL 47
AR RS0L25
DI 10.1029/2011RS004958
PG 16
WC Astronomy & Astrophysics; Geochemistry & Geophysics; Meteorology &
   Atmospheric Sciences; Remote Sensing; Telecommunications
SC Astronomy & Astrophysics; Geochemistry & Geophysics; Meteorology &
   Atmospheric Sciences; Remote Sensing; Telecommunications
GA 977XE
UT WOS:000306697400001
ER

PT J
AU Ramezani, H
   Christodoulides, DN
   Kovanis, V
   Vitebskiy, I
   Kottos, T
AF Ramezani, Hamidreza
   Christodoulides, D. N.
   Kovanis, V.
   Vitebskiy, I.
   Kottos, Tsampikos
TI PT-Symmetric Talbot Effects
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID NON-HERMITIAN HAMILTONIANS; GRATINGS; OPTICS
AB We show that complex PT-symmetric photonic lattices can lead to a new class of self-imaging Talbot effects. For this to occur, we find that the input field pattern has to respect specific periodicities dictated by the symmetries of the system. While at the spontaneous PT-symmetry breaking point the image revivals occur at Talbot lengths governed by the characteristics of the passive lattice, at the exact phase it depends on the gain and loss parameter, thus allowing one to control the imaging process.
C1 [Ramezani, Hamidreza; Kottos, Tsampikos] Wesleyan Univ, Dept Phys, Middletown, CT 06459 USA.
   [Christodoulides, D. N.] Univ Cent Florida, Coll Opt & Photon CREOL, Orlando, FL 32816 USA.
   [Kovanis, V.; Vitebskiy, I.] USAF, Res Lab, Sensors Directorate, Wright Patterson AFB, OH 45433 USA.
   [Kottos, Tsampikos] MPI Dynam & Self Org, D-37073 Gottingen, Germany.
RP Ramezani, H (reprint author), Wesleyan Univ, Dept Phys, Middletown, CT 06459 USA.
FU AFOSR [FA 9550-10-1-0433, FA 9550-10-1-0561, LRIR 09RY04COR]; NSF
   [ECCS-1128571]
FX This research was supported by the Electromagnetics Portfolio of Dr.
   Arje Nachman of AFOSR via Grant Nos. FA 9550-10-1-0433, FA
   9550-10-1-0561 and LRIR 09RY04COR, and by an NSF ECCS-1128571 grant.
NR 36
TC 61
Z9 61
U1 3
U2 37
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 JUL 20
PY 2012
VL 109
IS 3
AR 033902
DI 10.1103/PhysRevLett.109.033902
PG 5
WC Physics, Multidisciplinary
SC Physics
GA 976SK
UT WOS:000306604700005
PM 22861852
ER

PT J
AU Trohalaki, S
   Kedziora, GS
   Pachter, R
AF Trohalaki, Steven
   Kedziora, Gary S.
   Pachter, Ruth
TI Molecular dynamics simulation of two photon-absorbing polyimides:
   Evidence for the formation of intra- and inter-chain dimers
SO POLYMER
LA English
DT Article
DE Polymimides; Two-photon absorption; Molecular dynamics simulation
ID GAS SEPARATION; 2-PHOTON; CHROMOPHORES; ABSORPTION; MEMBRANES
AB The two photon-absorbing (2PA) chromophore diphenylamino-diethylfluorene-benzothiazole was recently incorporated into a new series of polyimides that form clear, heat-resistant films. Although the chromophore is fluorescent, the polyimides are not fluorescent when in solution or in the solid state. While the two-photon response remains undiminished for both nanosecond and femtosecond timescales in solution, nearly an order of magnitude increase in nanosecond two-photon response was observed in the solid state. In order to better understand 2PA in excited-state dimers of this class of polyimide, we explored dimerization in the ground-state, either within the polymer chain or inter-molecularly among chains. We built models of polyimides at experimental density and performed classical molecular dynamics simulations. Analyses using spatial orientation correlation functions suggest that ground state dimers composed of pi-stacked chromophore pairs or chromophore-phthalimide moieties form within chains and between chains. Dimer conformations obtained from the molecular dynamics trajectories are also consistent with our analyses. (C) 2012 Elsevier Ltd. All rights reserved.
C1 [Trohalaki, Steven; Pachter, Ruth] USAF, Res Lab, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA.
   [Trohalaki, Steven] Gen Dynam Informat Technol, Dayton, OH 45431 USA.
   [Kedziora, Gary S.] Dynami Res Corp, Wright Patterson AFB, OH 45433 USA.
RP Trohalaki, S (reprint author), USAF, Res Lab, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA.
EM Steven.Trohalaki@wpafb.af.mil; Ruth.Pachter@wpafb.af.mil
FU U.S. Air Force Office of Scientific Research
FX This work was funded by the U.S. Air Force Office of Scientific
   Research. Calculations were performed with facilities provided by the
   Air Force Research Laboratory, Department of Defense Supercomputing
   Resource Center at Wright-Patterson Air Force Base.
NR 24
TC 5
Z9 5
U1 4
U2 23
PU ELSEVIER SCI LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
SN 0032-3861
J9 POLYMER
JI Polymer
PD JUL 19
PY 2012
VL 53
IS 16
BP 3421
EP 3425
DI 10.1016/j.polymer.2012.05.061
PG 5
WC Polymer Science
SC Polymer Science
GA 979MZ
UT WOS:000306825400002
ER

PT J
AU Kwon, G
   Kota, AK
   Li, YX
   Sohani, A
   Mabry, JM
   Tuteja, A
AF Kwon, Gibum
   Kota, Arun. K.
   Li, Yongxin
   Sohani, Ameya
   Mabry, Joseph M.
   Tuteja, Anish
TI On-Demand Separation of Oil-Water Mixtures
SO ADVANCED MATERIALS
LA English
DT Article
DE oil-water separation; electrowetting; emulsion separation; emulsions
ID DEAD-END MICROFILTRATION; FLUX DECLINE; CROSS-FLOW; SURFACES; MEMBRANE;
   EMULSIONS; DEMULSIFICATION; COALESCENCE; FILMS
C1 [Kwon, Gibum; Kota, Arun. K.; Li, Yongxin; Sohani, Ameya; Tuteja, Anish] Univ Michigan, Dept Mat Sci & Engn, Ann Arbor, MI 48109 USA.
   [Mabry, Joseph M.] USAF, Space & Missile Prop Div, Res Lab, Edwards AFB, CA 93524 USA.
RP Tuteja, A (reprint author), Univ Michigan, Dept Mat Sci & Engn, Ann Arbor, MI 48109 USA.
EM atuteja@umich.edu
FU Air Force Office of Scientific Research (AFOSR) [FA9550-10-1-0523,
   LRIR-92PL0COR]
FX GK and AKK contributed equally to this work. We thank Dr. Charles Y-C.
   Lee and the Air Force Office of Scientific Research (AFOSR) for
   financial support under grants FA9550-10-1-0523 and LRIR-92PL0COR. We
   also thank the donors of the American Chemical Society Petroleum
   Research Fund. We thank Prof. Frieder Mugele at the University of Twente
   for comments and discussion. We also thank Prof. Nicholas A. Kotov at
   the University of Michigan for use of facilities. We thank Mr. Brett
   Wight at the Air Force Research Laboratory for help with Karl Fischer
   analysis.
NR 34
TC 151
Z9 153
U1 30
U2 325
PU WILEY-V C H VERLAG GMBH
PI WEINHEIM
PA BOSCHSTRASSE 12, D-69469 WEINHEIM, GERMANY
SN 0935-9648
J9 ADV MATER
JI Adv. Mater.
PD JUL 17
PY 2012
VL 24
IS 27
BP 3666
EP 3671
DI 10.1002/adma.201201364
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 971QJ
UT WOS:000306218600010
PM 22689385
ER

PT J
AU Eby, DM
   Harbaugh, S
   Tatum, RN
   Farrington, KE
   Kelley-Loughnane, N
   Johnson, GR
AF Eby, D. Matthew
   Harbaugh, Svetlana
   Tatum, Randi N.
   Farrington, Karen E.
   Kelley-Loughnane, Nancy
   Johnson, Glenn R.
TI Bacterial Sunscreen: Layer-by-Layer Deposition of UV-Absorbing Polymers
   on Whole-Cell Biosensors
SO LANGMUIR
LA English
DT Article
ID POLYELECTROLYTE SHELLS; LIVING CELLS; STEM-CELLS; RIBOSWITCH;
   NANOPARTICLES; ENCAPSULATION; MICROBES; SUNLIGHT
AB UV-protective coatings on live bacterial cells were created from the assembly of cationic and UV-absorbing anionic polyelectrolytes using layer-by-layer (LbL) methodology. A cationic polymer (polyallylamine) and three different anionic polymers with varying absorbance in the UV range (poly(vinyl sulfate), poly(4-styrenesulfonic acid), and humic acid) were used to encapsulate Escherichia coli cells with two different green fluorescent protein (GFP) expression systems: constitutive expression of a UV-excitable GFP (GFPuv) and regulated expression of the intensely fluorescent GFP from amphioxus (GFPa1) through a theophylline-inducible riboswitch. Riboswitches activate protein expression after specific ligand-RNA binding events. Hence, they operate as a cellular biosensor that will activate reporter protein synthesis after exposure to a ligand target. E. coli cells coated with UV-absorbing polymers demonstrated enhanced protection of GFP stability, metabolic activity, and viability after prolonged exposure to radiation from a germicidal lamp. The results show the effectiveness of LbL coatings to provide UV protection to living cells for biotechnological applications.
C1 [Eby, D. Matthew; Tatum, Randi N.; Farrington, Karen E.] Universal Technol Corp, Tyndall AFB, FL 32403 USA.
   [Eby, D. Matthew; Tatum, Randi N.; Farrington, Karen E.; Johnson, Glenn R.] USAF, Res Lab, Mat & Mfg Directorate, Tyndall AFB, FL 32403 USA.
   [Harbaugh, Svetlana; Kelley-Loughnane, Nancy] USAF, Res Lab, Human Effectiveness Directorate, Wright Patterson AFB, OH 45433 USA.
RP Eby, DM (reprint author), Universal Technol Corp, 139 Barnes Dr,Bldg 1117, Tyndall AFB, FL 32403 USA.
EM donald.eby.ctr@us.af.mil; glenn.johnson.8@us.af.mil
FU Air Force Office of Scientific Research; Material and Manufacturing
   Directorate; 711th Human Performance Wing, Human Effectiveness
   Directorate, Air Force Research Laboratory
FX We acknowledge the generous contribution of Prof. Dimitri Deheyn of
   Scripps Institution of Oceanography, University of California, San Diego
   for the GFPa1gene. Work presented herein was supported by funding from
   the Air Force Office of Scientific Research, the Material and
   Manufacturing Directorate, and the 711th Human Performance Wing, Human
   Effectiveness Directorate, Air Force Research Laboratory.
NR 40
TC 9
Z9 9
U1 0
U2 25
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0743-7463
J9 LANGMUIR
JI Langmuir
PD JUL 17
PY 2012
VL 28
IS 28
BP 10521
EP 10527
DI 10.1021/la3014514
PG 7
WC Chemistry, Multidisciplinary; Chemistry, Physical; Materials Science,
   Multidisciplinary
SC Chemistry; Materials Science
GA 974NA
UT WOS:000306441100025
PM 22694254
ER

PT J
AU Rowley, JD
   Wahlstrand, JK
   Zawilski, KT
   Schunemann, PG
   Giles, NC
   Bristow, AD
AF Rowley, J. D.
   Wahlstrand, J. K.
   Zawilski, K. T.
   Schunemann, P. G.
   Giles, N. C.
   Bristow, A. D.
TI Terahertz generation by optical rectification in uniaxial birefringent
   crystals
SO OPTICS EXPRESS
LA English
DT Article
ID ZNGEP2; SPECTROSCOPY; PULSES
AB The angular dependence of terahertz (THz) emission from birefringent crystals can differ significantly from that of cubic crystals. Here we consider optical rectification in uniaxial birefringent materials, such as chalcopyrite crystals. The analysis is verified in (110)-cut ZnGeP2 and compared to (zincblende) GaP. Although the crystals share the same nonzero second-order tensor elements, the birefringence in chalcopyrite crystals cause the pump pulse polarization to evolve as it propagates through the crystal, resulting in a drastically different angular dependence in chalcopyrite crystals. The analysis is extended to {012}- and {114}-cut chalcopyrite crystals and predicts more efficient conversion for the {114} crystal cut over the {012}- and {110}-cuts. (C) 2012 Optical Society of America
C1 [Rowley, J. D.; Bristow, A. D.] W Virginia Univ, Dept Phys, Morgantown, WV 26506 USA.
   [Wahlstrand, J. K.] Univ Maryland, Inst Res Elect & Appl Phys, College Pk, MD 20742 USA.
   [Zawilski, K. T.; Schunemann, P. G.] BAE Syst, Nashua, NH 03061 USA.
   [Giles, N. C.] USAF, Inst Technol, Dept Engn Phys, Wright Patterson AFB, OH 45433 USA.
RP Rowley, JD (reprint author), W Virginia Univ, Dept Phys, Morgantown, WV 26506 USA.
EM alan.bristow@mail.wvu.edu
RI Bristow, Alan/F-9703-2013
FU WVNano Initiative
FX The authors wish to thank Larry Halliburton and John Sipe for useful
   discussions. JDR wishes to thank the WVNano Initiative for support. The
   views expressed in this article are those of the authors and do not
   necessarily reflect the official policy or position of the Air Force,
   the Department of Defense, or the United States Government.
NR 20
TC 4
Z9 5
U1 1
U2 24
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 JUL 16
PY 2012
VL 20
IS 15
BP 16968
EP 16973
DI 10.1364/OE.20.016968
PG 6
WC Optics
SC Optics
GA 982OR
UT WOS:000307055800081
ER

PT J
AU Munoz, A
   McConney, ME
   Kosa, T
   Luchette, P
   Sukhomlinova, L
   White, TJ
   Bunning, TJ
   Taheri, B
AF Munoz, A.
   McConney, M. E.
   Kosa, T.
   Luchette, P.
   Sukhomlinova, L.
   White, T. J.
   Bunning, T. J.
   Taheri, B.
TI Continuous wave mirrorless lasing in cholesteric liquid crystals with a
   pitch gradient across the cell gap
SO OPTICS LETTERS
LA English
DT Article
ID PHOTONIC BAND-GAP; LASERS
AB Despite numerous efforts, continuous wave (CW) lasing in dye doped, one-dimensional (1D) photonic bandgap cholesteric liquid crystal (CLC) structures has not been previously reported, to our knowledge. Here we report on the observation of lasing in such structures under both coherent (laser) and incoherent (LED) CW light excitation. To achieve this effect, we used a 1D-photonic bandgap structure made of a polymer stabilized CLC with a pitch gradient across the cell thickness. A spectral reflectivity profile of such a CLC structure reveals local minima in the area within a photonic stopband and close to it. The realization of lasing pumped by low power CW light sources opens the possibility of all-organic, compact, tunable CW lasers for display and medical applications. (C) 2012 Optical Society of America
C1 [Munoz, A.; Kosa, T.; Luchette, P.; Sukhomlinova, L.; Taheri, B.] AlphaMicron Inc, Kent, OH 44240 USA.
   [McConney, M. E.; White, T. J.; Bunning, T. J.] AFRL, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA.
RP Munoz, A (reprint author), AlphaMicron Inc, 1950 State Route 59, Kent, OH 44240 USA.
EM antonio@alphamicron.com
RI White, Timothy/D-4392-2012; McConney, Michael/A-1680-2011
FU AFOSR LRIR [09RX04COR]
FX This work was partially supported by AFOSR LRIR 09RX04COR. The authors
   thank all reviewers for valuable comments.
NR 23
TC 25
Z9 25
U1 2
U2 47
PU OPTICAL SOC AMER
PI WASHINGTON
PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA
SN 0146-9592
J9 OPT LETT
JI Opt. Lett.
PD JUL 15
PY 2012
VL 37
IS 14
BP 2904
EP 2906
PG 3
WC Optics
SC Optics
GA 978AH
UT WOS:000306709900045
PM 22825173
ER

PT J
AU Muratore, C
   Aouadi, SM
   Voevodin, AA
AF Muratore, C.
   Aouadi, S. M.
   Voevodin, A. A.
TI Embedded phase change material microinclusions for thermal control of
   surfaces
SO SURFACE & COATINGS TECHNOLOGY
LA English
DT Article
DE Phase change materials; Thermal management; Infrared microscopy; Laser
   heating
ID STORAGE
AB The performance and lifetime of sensors, microelectronic devices, mini air vehicle components and other systems can benefit from maintenance of a constant temperature profile or a local temperature that does not exceed a pre-selected, critical value during short-term transient loading events. In this work, the utility of surfaces featuring phase change materials (PCMs) encapsulated within micro-reservoirs was evaluated as a passive thermal management system for mitigation of transient temperature spikes. Patterned silicon substrates with 40 pm diameter, 10 pm deep trenches were prepared by reactive ion etching in an Ar/CF4 plasma. The features were filled with an organic phase change material possessing a high latent heat and known to undergo melting at a target operating temperature of approximately 60 degrees C. An infrared microscope was used to produce temporally and spatially resolved temperature maps of the surface during heating. When a constant heat flux of approximately 200W M-2 was used for uniform heating of the sample area from 50 to 75 degrees C the PCM encapsulated materials demonstrated an isothermal plateau period lasting 5-8 s near the PCM melting point. A similar plateau was also observed during cooling below the PCM melting point. From the isothermal time during heating the areal thermal energy storage density was estimated to be approximately 800 J m(-2), close to that predicted by the calculated volume of PCM contained within the sample. The effects of PCM inclusions on surface temperature gradients during pulsed laser heating were also investigated. An infrared (980 nm) laser at a fixed power and repetition rate was focused into a 1 mm diameter beam on surfaces with and without PCM encapsulation for rapid heating (analogous to heating from resistive contacts in microelectronic circuits) of different duration from 0.5 to 5.0 s. The surface temperature stayed below the desired temperature limit for 100 mW laser pulses lasting up to 2 s in duration. Transient temperature profiles of Si/PCM surfaces showed that micro-scale volumes of embedded phase change material stored sufficient quantities of heat to stabilize and otherwise control surface temperatures for potentially useful periods of time in selected applications. Published by Elsevier B.V.
C1 [Muratore, C.; Voevodin, A. A.] USAF, Res Lab, Mat & Mfg Directorate, Thermal Sci & Mat Branch, Wright Patterson AFB, OH 45433 USA.
   [Aouadi, S. M.] So Illinois Univ, Dept Phys, Carbondale, IL 62901 USA.
RP Muratore, C (reprint author), USAF, Res Lab, Mat & Mfg Directorate, Thermal Sci & Mat Branch, Wright Patterson AFB, OH 45433 USA.
EM chris.muratore@wpafb.af.mil
RI Voevodin, Andrey/I-6684-2013
NR 8
TC 2
Z9 2
U1 0
U2 17
PU ELSEVIER SCIENCE SA
PI LAUSANNE
PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND
SN 0257-8972
J9 SURF COAT TECH
JI Surf. Coat. Technol.
PD JUL 15
PY 2012
VL 206
IS 23
BP 4828
EP 4832
DI 10.1016/j.surfcoat.2012.05.030
PG 5
WC Materials Science, Coatings & Films; Physics, Applied
SC Materials Science; Physics
GA 978DG
UT WOS:000306720200017
ER

PT J
AU Troe, J
   Miller, TM
   Shuman, NS
   Viggiano, AA
AF Troe, Juergen
   Miller, Thomas M.
   Shuman, Nicholas S.
   Viggiano, Albert A.
TI Analysis by kinetic modeling of the temperature dependence of thermal
   electron attachment to CF3Br
SO JOURNAL OF CHEMICAL PHYSICS
LA English
DT Article
ID RATE COEFFICIENTS; COLLISIONS; CAPTURE; CH3BR; FALP; SF6
AB Experimental data from the literature for cross sections and rate constants for dissociative electron attachment to CF3Br, with separately varied electron and gas temperatures, are analyzed by a kinetic modeling approach. The analysis suggests that electronic and nuclear contributions to the rate constants can be roughly separated, the former leading to a negative temperature coefficient, the latter to a positive temperature coefficient. The nuclear factor in the rate constant is found to be of Arrhenius form with an activation energy which is close to the energy of crossing of the CF3Br and CF3Br- potential curves along the CBr bond. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4729369]
C1 [Troe, Juergen] Univ Gottingen, Inst Phys Chem, D-37077 Gottingen, Germany.
   [Troe, Juergen] Max Planck Inst Biophys Chem, D-37077 Gottingen, Germany.
   [Troe, Juergen] Laser Lab Gottingen, D-37077 Gottingen, Germany.
   [Miller, Thomas M.; Shuman, Nicholas S.; Viggiano, Albert A.] USAF, Res Lab, Space Vehicles Directorate, Kirtland AFB, NM 87117 USA.
RP Troe, J (reprint author), Univ Gottingen, Inst Phys Chem, Tammannstr 6, D-37077 Gottingen, Germany.
FU EOARD [FA8655-11-3077]; (U.S.) Air Force Office of Scientific Research
   (USAFOSR) [AFOSR-2303EP];  [FA8718-10-C-0002]
FX Extensive discussions of this work with E. E. Nikitin and H. Hotop are
   gratefully acknowledged. Technical assistance by A. I. Maergoiz and G.
   Marowsky as well as financial support by the EOARD (Grant Award
   FA8655-11-3077) are acknowledged as well. This project was also
   supported by the (U.S.) Air Force Office of Scientific Research
   (USAFOSR) under Project AFOSR-2303EP. T.M.M. is under contract
   (FA8718-10-C-0002) to Boston College.
NR 25
TC 9
Z9 9
U1 3
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 0021-9606
J9 J CHEM PHYS
JI J. Chem. Phys.
PD JUL 14
PY 2012
VL 137
IS 2
AR 024303
DI 10.1063/1.4729369
PG 6
WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical
SC Chemistry; Physics
GA 973LG
UT WOS:000306361000013
PM 22803532
ER

PT J
AU Beier, HT
   Roth, CC
   Tolstykh, GP
   Ibey, BL
AF Beier, Hope T.
   Roth, Caleb C.
   Tolstykh, Gleb P.
   Ibey, Bennett L.
TI Resolving the spatial kinetics of electric pulse-induced ion release
SO BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS
LA English
DT Article
DE Pulsed electric field; Nanosecond electric pulse; Fluorescence imaging;
   Calcium; Nanopores
ID PLASMA-MEMBRANE PERMEABILIZATION; MAMMALIAN-CELLS; NANOSECOND; CALCIUM;
   FIELDS
AB Exposure of cells to nanosecond pulsed electric fields (nsPEF) causes a rapid increase in intracellular calcium. The mechanism(s) responsible for this calcium burst remains unknown, but is hypothesized to be from direct influx through nanopores, the activation of specific ion channels, or direct disruption of organelles. It is likely, however, that several mechanisms are involved/activated, thereby resulting in a complex chain of events that are difficult to separate by slow imaging methods. In this letter, we describe a novel high-speed imaging system capable of determining the spatial location of calcium bursts within a single cell following nsPEF exposure. Preliminary data in rodent neuroblastoma cells are presented, demonstrating the ability of this system to track the location of calcium bursts in vitro within milliseconds of exposure. These data reveal that calcium ions enter the cell from the plasma membrane regions closest to the electrodes (poles), and that intracellular calcium release occurs in the absence of extracellular calcium. We believe that this novel technique will allow us to temporally and spatially separate various nsPEF-induced effects, leading to powerful insights into the mechanism(s) of interaction between electric fields and cellular membranes. (C) 2012 Elsevier Inc. All rights reserved.
C1 [Beier, Hope T.; Tolstykh, Gleb P.; Ibey, Bennett L.] USAF, Res Lab, Ft Sam Houston, TX 78234 USA.
   [Roth, Caleb C.] Gen Dynam Informat Technol, Ft Sam Houston, TX USA.
RP Beier, HT (reprint author), USAF, Res Lab, 4141 Petr Rd, Ft Sam Houston, TX 78234 USA.
EM hopebeier@gmail.com
FU National Research Council; Air Force Office of Scientific Research
   (AFOSR) LRIR [12RH01COR, 09RH09COR]
FX HTB and GPT acknowledge support of National Research Council Research
   Associateship Awards. HTB and BLI acknowledge support of Air Force
   Office of Scientific Research (AFOSR) LRIR grants #12RH01COR (Beier) and
   #09RH09COR (Ibey). The authors thank Shu Xiao for providing the pulsing
   system.
NR 23
TC 26
Z9 26
U1 2
U2 7
PU ACADEMIC PRESS INC ELSEVIER SCIENCE
PI SAN DIEGO
PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA
SN 0006-291X
J9 BIOCHEM BIOPH RES CO
JI Biochem. Biophys. Res. Commun.
PD JUL 13
PY 2012
VL 423
IS 4
BP 863
EP 866
DI 10.1016/j.bbrc.2012.06.055
PG 4
WC Biochemistry & Molecular Biology; Biophysics
SC Biochemistry & Molecular Biology; Biophysics
GA 982GZ
UT WOS:000307032400042
PM 22713455
ER

PT J
AU Kanmae, T
   Stenbaek-Nielsen, HC
   McHarg, MG
   Haaland, RK
AF Kanmae, T.
   Stenbaek-Nielsen, H. C.
   McHarg, M. G.
   Haaland, R. K.
TI Diameter-speed relation of sprite streamers
SO JOURNAL OF PHYSICS D-APPLIED PHYSICS
LA English
DT Article
ID AIR; ATMOSPHERE; SIMILARITY; DYNAMICS
AB Propagation and splitting of sprite streamers has been observed at high temporal and spatial resolution using two intensified high-speed CMOS cameras recording at 10 000 and 16 000 frames per second. Concurrent video recordings from a remote site provided data for triangulation allowing us to determine accurate altitude scales for the sprites. Diameters and speeds of the sprite streamers were measured from the high-speed images, and the diameters were scaled to the reduced diameters based on the triangulated locations. The sprite streamers with larger reduced diameter move faster than those with smaller diameter; the relation between the reduced diameter and speed is roughly linear. The reduced diameters at approximate to 65-70 km altitude are larger than streamer diameters measured at ground pressure in laboratory discharges indicating a deviation from the similarity law possibly due to the effects of the photoionization and an expansion of the streamer head along its propagation over a long distance. The reduced diameter and speed of the sprite streamers agree well with the diameter-velocity relation proposed by Naidis (2009 Phys. Rev. E 79 057401), and the peak electric field of the sprite streamers is estimated to be approximately 3-5 times the breakdown threshold field.
C1 [Kanmae, T.; Stenbaek-Nielsen, H. C.] Univ Alaska Fairbanks, Inst Geophys, Fairbanks, AK 99775 USA.
   [McHarg, M. G.] USAF Acad, Space Phys & Atmospher Res Ctr, Colorado Springs, CO 80840 USA.
   [Haaland, R. K.] Ft Lewis Coll, Dept Phys & Engn, Durango, CO 81301 USA.
RP Kanmae, T (reprint author), Univ Alaska Fairbanks, Inst Geophys, 903 Koyukuk Dr, Fairbanks, AK 99775 USA.
EM tkammae@gi.alaska.edu
OI Kanmae, Takeshi/0000-0001-9893-9718
FU NSF [ATM-0737605, ATM-0737294]; US Air Force Academy
FX The authors thank Dr Bill Winn and his staff at the Langmuir Laboratory,
   New Mexico Tech, Socorro, New Mexico, for their help and hospitality.
   The GOES-13 infrared image is provided by NOAA National Climatic Data
   Center. The research was funded in part by NSF grants ATM-0737605 and
   ATM-0737294 to the University of Alaska Fairbanks and the US Air Force
   Academy.
NR 41
TC 15
Z9 15
U1 0
U2 15
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0022-3727
EI 1361-6463
J9 J PHYS D APPL PHYS
JI J. Phys. D-Appl. Phys.
PD JUL 11
PY 2012
VL 45
IS 27
AR 275203
DI 10.1088/0022-3727/45/27/275203
PG 11
WC Physics, Applied
SC Physics
GA 965JU
UT WOS:000305764700008
ER

PT J
AU Bogosian, V
   Hellgren, EC
   Sears, MW
   Moody, RW
AF Bogosian, Victor, III
   Hellgren, Eric C.
   Sears, Michael W.
   Moody, Raymond W.
TI High-resolution niche models via a correlative approach: Comparing and
   combining correlative and process-based information
SO ECOLOGICAL MODELLING
LA English
DT Article
DE Correlative models; Phrynosoma cornutum; Niche suitability;
   Process-based models; Texas horned lizards; Receiver operating
   characteristic; Model selection; Model comparison
ID LIZARD PHRYNOSOMA-CORNUTUM; SPECIES DISTRIBUTION MODELS; BEAR HABITAT
   USE; HORNED LIZARDS; TEXAS; DISTRIBUTIONS; ENVIRONMENT; PREDATOR;
   ECOLOGY; PREY
AB Correlative and process-based approaches to describing the ecological niche in a spatially explicit fashion have often been compared in an adversarial framework. We sought to compare niche models developed via classic (correlative only), niche (process-based information), and hybridized (correlative augmented with process-based derived information) approaches, with the goal of determining if the added effort of process-based model development yielded better model fit. Correlative data layers (i.e., habitat models) included vegetation community types. Euclidean distance statistics, neighborhood analyses, and topographically-derived information. Mechanistic data layers were estimates of thermal suitability derived from field-collected datasets and biophysical calculations, and estimates of prey biomass interpolated from monitoring stations. We applied these models at high resolution (1 m x 1 m pixel size) to habitat occupied by a population of Texas horned lizards (Phrynosoma cornutum) located in central Oklahoma. Results suggested that our treatment of process-based information offered dramatically better identification of suitable habitat when compared to correlative information, but that these results were likely due to low variability of niche variable pixel values. Niche layers nearly perfectly predicted lizard locations; the interpretation of these results suggest that lizards occupy habitat based on thermal suitability over the duration of a field season. Given the low variability observed in thermal suitability layers, we question the ecological reality of these predictions. Correlative models may accurately describe the niche at small spatial scales, and may suffice in situations where time and financial resources are limiting constraints on project goals. Process-based information continues to be an important part of the niche, and may offer additional predictive accuracy via correlative approaches when included in an ecologically meaningful context. (C) 2012 Elsevier B.V. All rights reserved.
C1 [Bogosian, Victor, III; Hellgren, Eric C.] So Illinois Univ, Cooperat Wildlife Res Lab, Carbondale, IL 62901 USA.
   [Sears, Michael W.] Clemson Univ, Dept Biol Sci, Clemson, SC 29634 USA.
   [Moody, Raymond W.] Nat Resources, Tinker AFB, OK 73145 USA.
RP Bogosian, V (reprint author), Eagle Bluffs Conservat Area, 6700 W Route K, Columbia, MO 65203 USA.
EM Vic.Bogosian@mdc.mo.gov
OI Hellgren, Eric/0000-0002-3870-472X
FU United States Department of Defense (United States Air Force, Tinker Air
   Force Base) via the Great Rivers Cooperative Ecosystem Unit (United
   States Army Construction Engineering Research Laboratory, Southern
   Illinois University Carbondale); Horned Lizard Conservation Society
FX This work was supported by the United States Department of Defense
   (United States Air Force, Tinker Air Force Base) via the Great Rivers
   Cooperative Ecosystem Unit (United States Army Construction Engineering
   Research Laboratory, Southern Illinois University Carbondale), and by
   the Horned Lizard Conservation Society small research grants program.
   Dr. Guangxing Wang of the geography department at Southern Illinois
   University Carbondale graciously allowed us to borrow spectrometry
   equipment. Field assistants included J. Ackley, J.C. Baker, A. Baur, P.
   Calhoun, M. Cook, J. Dierks, M. Gage, K. Hitz, M. Johnson, R. Karsch,
   J.Krupovage, J. Lee, R. Moll, B.Sparks, B. Wasserman, B. Watson, and A.
   Miguel-Zebal. Geographic information system assistance was provided by
   the staff of Parson's, Inc. (B. Gilliam, G. Hakman, K. Maxwell, J.
   McCanne, and B. Springer). All field work was conducted under permits
   approved by Southern Illinois University Carbondale institutional animal
   care and use committee (permits # 08-039 and 05-063) and Oklahoma
   Scientific Collector Permit # 4428.
NR 85
TC 2
Z9 2
U1 2
U2 44
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0304-3800
EI 1872-7026
J9 ECOL MODEL
JI Ecol. Model.
PD JUL 10
PY 2012
VL 237
BP 63
EP 73
DI 10.1016/j.ecolmodel.2012.04.017
PG 11
WC Ecology
SC Environmental Sciences & Ecology
GA 966UN
UT WOS:000305863000006
ER

PT J
AU Plane, JMC
   Whalley, CL
   Frances-Soriano, L
   Goddard, A
   Harvey, JN
   Glowacki, DR
   Viggiano, AA
AF Plane, J. M. C.
   Whalley, C. L.
   Frances-Soriano, L.
   Goddard, A.
   Harvey, J. N.
   Glowacki, D. R.
   Viggiano, A. A.
TI O-2(a(1)Delta(g))+Mg, Fe, and Ca: Experimental kinetics and formulation
   of a weak collision, multiwell master equation with spin-hopping
SO JOURNAL OF CHEMICAL PHYSICS
LA English
DT Article
ID H ATOM YIELDS; ATMOSPHERIC CHEMISTRY; O-2; TEMPERATURE; ENERGY; IRON;
   RECOMBINATION; OZONE; DISSOCIATION; TRANSITIONS
AB The first excited electronic state of molecular oxygen, O-2(a(1)Delta(g)), is formed in the upper atmosphere by the photolysis of O-3. Its lifetime is over 70 min above 75 km, so that during the day its concentration is about 30 times greater than that of O-3. In order to explore its potential reactivity with atmospheric constituents produced by meteoric ablation, the reactions of Mg, Fe, and Ca with O-2(a) were studied in a fast flow tube, where the metal atoms were produced either by thermal evaporation (Ca and Mg) or by pulsed laser ablation of a metal target (Fe), and detected by laser induced fluorescence spectroscopy. O-2(a) was produced by bubbling a flow of Cl-2 through chilled alkaline H2O2, and its absolute concentration determined from its optical emission at 1270 nm (O-2(a(1)Delta(g) -X-3 Sigma(-)(g)). The following results were obtained at 296 K: k(Mg + O-2(a) + N-2 -> MgO2 + N-2) = (1.8 +/- 0.2) x 10(-30) cm(6) molecule(-2) s(-1); k(Fe + O-2(a) -> FeO + O) = (1.1 +/- 0.1) x 10(-13) cm(3) molecule(-1) s(-1); k(Ca + O-2(a) + N-2 -> CaO2 + N-2) = (2.9 +/- 0.2) x 10(-28) cm(6) molecule(-2) s(-1); and k(Ca + O-2(a) -> CaO + O) = (2.7 +/- 1.0) x 10(-12) cm(3) molecule(-1) s(-1). The total uncertainty in these rate coefficients, which mostly arises from the systematic uncertainty in the O-2(a) concentration, is estimated to be +/- 40%. Mg + O-2(a) occurs exclusively by association on the singlet surface, producing MgO2((1)A(1)), with a pressure dependent rate coefficient. Fe + O-2(a), on the other hand, shows pressure independent kinetics. FeO + O is produced with a probability of only similar to 0.1%. There is no evidence for an association complex, suggesting that this reaction proceeds mostly by nearresonant electronic energy transfer to Fe(a(5)F) + O-2(X). The reaction of Ca + O-2(a) occurs in an intermediate regime with two competing pressure dependent channels: (1) a recombination to produce CaO2((1)A(1)), and (2) a singlet/triplet non-adiabatic hopping channel leading to CaO + O(P-3). In order to interpret the Ca + O-2(a) results, we utilized density functional theory along with multireference and explicitly correlated CCSD(T)-F12 electronic structure calculations to examine the lowest lying singlet and triplet surfaces. In addition to mapping stationary points, we used a genetic algorithm to locate minimum energy crossing points between the two surfaces. Simulations of the Ca + O-2(a) kinetics were then carried out using a combination of both standard and non-adiabatic Rice-Ramsperger-Kassel-Marcus (RRKM) theory implemented within a weak collision, multiwell master equation model. In terms of atmospheric significance, only in the case of Ca does reaction with O-2(a) compete with O-3 during the daytime between 85 and 110 km. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4730423]
C1 [Plane, J. M. C.; Whalley, C. L.; Frances-Soriano, L.; Goddard, A.] Univ Leeds, Sch Chem, Leeds LS2 9JT, W Yorkshire, England.
   [Frances-Soriano, L.] Univ Valencia, Dept Phys Chem, E-46100 Valencia, Spain.
   [Harvey, J. N.; Glowacki, D. R.] Univ Bristol, Ctr Computat Chem, Bristol BS8 1TS, Avon, England.
   [Viggiano, A. A.] USAF, Res Lab, Kirtland AFB, NM 87117 USA.
RP Plane, JMC (reprint author), Univ Leeds, Sch Chem, Leeds LS2 9JT, W Yorkshire, England.
EM J.M.C.Plane@leeds.ac.uk; drglowacki@gmail.com
RI Harvey, Jeremy/E-8848-2010; Frances-Soriano, Laura/K-7875-2014; Plane,
   John/C-7444-2015
OI Harvey, Jeremy/0000-0002-1728-1596; Frances-Soriano,
   Laura/0000-0002-5630-4199; Plane, John/0000-0003-3648-6893
FU European Office of Aerospace Research and Development
   [FA8655-10-1-3045]; Engineering and Physical Sciences Research Consul
   (United Kingdom) (EPSRC(GB)) Programme [EP/G00224X]
FX This work was supported through award FA8655-10-1-3045 from the European
   Office of Aerospace Research and Development. Funding for D. R. G. was
   provided by the Engineering and Physical Sciences Research Consul
   (United Kingdom) (EPSRC(GB)) Programme (Grant No. EP/G00224X).
NR 59
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U1 0
U2 19
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 JUL 7
PY 2012
VL 137
IS 1
AR 014310
DI 10.1063/1.4730423
PG 13
WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical
SC Chemistry; Physics
GA 970OV
UT WOS:000306142600023
PM 22779651
ER

PT J
AU Xiao, X
   Javidi, B
   Saavedra, G
   Eismann, M
   Martinez-Corral, M
AF Xiao, Xiao
   Javidi, Bahram
   Saavedra, Genaro
   Eismann, Michael
   Martinez-Corral, Manuel
TI Three-dimensional polarimetric computational integral imaging
SO OPTICS EXPRESS
LA English
DT Article
ID SPECULAR REFLECTION; POLARIZATION; RECONSTRUCTION; PARAMETERS; SURFACES;
   VISION; IMAGES; SYSTEM; REAL
AB In this paper, we propose a novel 3D polarimetric computational integral imaging system by using polarization diversity of objects under natural illumination conditions. In the system, the measured Stokes polarization parameters are utilized to generate degree of polarization images of a 3D scene. Based on degree of polarization images and original 2D images, we utilize a modified computational reconstruction method to perform 3D polarimetric image reconstruction. The system may be used to detect or classify objects with distinct polarization signatures in 3D space. Experimental results also show the proposed system may mitigate the effect of occlusion in 3D reconstruction. (C) 2012 Optical Society of America
C1 [Xiao, Xiao; Javidi, Bahram] Univ Connecticut, Dept Elect & Comp Engn, Storrs, CT 06269 USA.
   [Saavedra, Genaro; Martinez-Corral, Manuel] Univ Valencia, Dept Opt, E-46100 Burjassot, Spain.
   [Eismann, Michael] USAF, Sensors Directorate, Res Lab, Wright Patterson AFB, OH 45433 USA.
RP Xiao, X (reprint author), Univ Connecticut, Dept Elect & Comp Engn, 371 Fairfield Rd,Unit 2157, Storrs, CT 06269 USA.
EM bahram.javidi@uconn.edu
RI Martinez-Corral, Manuel/I-2313-2012; Saavedra Tortosa,
   Genaro/H-7250-2015
OI Martinez-Corral, Manuel/0000-0002-1449-8976; Saavedra Tortosa,
   Genaro/0000-0003-1016-8651
FU Defense Advanced Research Projects Agency (DARPA); Air Force Research
   Laboratory (AFRL) [FA8650-07-C-7740]; Ministerio de Ciencia e
   Innovacion, Spain [FIS2009-9135]; Generalitat Valenciana
   [PROMETEO2009-077]
FX This work was supported in part by Defense Advanced Research Projects
   Agency (DARPA) and Air Force Research Laboratory (AFRL) under contract
   number FA8650-07-C-7740. The opinions presented in this paper do not and
   are not mean to represent the opinions of DARPA and AFRL. G. Saavedra
   and M. Martinez-Corral acknowledge the financial support of the Plan
   Nacional I + D + I under Grant FIS2009-9135, Ministerio de Ciencia e
   Innovacion, Spain, and the Generalitat Valenciana under Grant
   PROMETEO2009-077.
NR 30
TC 14
Z9 17
U1 0
U2 11
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 JUL 2
PY 2012
VL 20
IS 14
BP 15481
EP 15488
DI 10.1364/OE.20.015481
PG 8
WC Optics
SC Optics
GA 971BF
UT WOS:000306176100085
PM 22772243
ER

PT J
AU Rabenhorst, MM
   Thomsen, CJ
   Milner, JS
   Foster, RE
   Linkh, DJ
   Copeland, CW
AF Rabenhorst, Mandy M.
   Thomsen, Cynthia J.
   Milner, Joel S.
   Foster, Rachel E.
   Linkh, David J.
   Copeland, Carol W.
TI Spouse Abuse and Combat-Related Deployments in Active Duty Air Force
   Couples
SO PSYCHOLOGY OF VIOLENCE
LA English
DT Article
DE deployment; intimate partner violence; military; Operation Iraqi
   Freedom; Operation Enduring Freedom
ID US ARMY SOLDIERS; MENTAL-HEALTH PROBLEMS; DOMESTIC VIOLENCE; VETERANS;
   IRAQ; AFGHANISTAN; EXPOSURE; DISORDERS; SERVICES; GULF
AB Objective: To conduct the first population-based study comparing spouse abuse rates before and after combat-related deployments during Operation Iraqi Freedom/Operation Enduring Freedom among married U.S. Air Force personnel. Method: The sample included all married Air Force members with at least one substantiated incident of spouse physical or emotional abuse and at least one combat-related deployment between October 1, 2001 and October 31, 2008. Results: Overall, 6,063 individuals in 4,874 couples perpetrated 7,003 spouse abuse incidents across 9,676,517 person-days at risk. In couples where only one spouse abused and alcohol was involved, the abuse rate was significantly higher postdeployment. In couples where only the husband abused, the moderate/severe abuse rate was 24.0% higher postdeployment. In couples where only the husband abused, abuse was moderate/severe, and alcohol was used the abuse rate was 36.8% higher postdeployment. Despite these increases, among all abusive couples, the overall spouse abuse rate was 12.6% lower postdeployment. This finding was not moderated by military status, abuse type, year of first deployment, number of deployments, or total deployment duration. Conclusions: The impact of combat-related deployment on spouse abuse rates is variable with incidents involving moderate/severe abuse and alcohol being relatively more likely postdeployment, suggesting a need for focused prevention/intervention efforts. Families struggling with both violence and alcohol problems might benefit from collaboration between the Air Force Family Advocacy Program and Alcohol and Drug Abuse Prevention and Treatment program.
C1 [Rabenhorst, Mandy M.; Thomsen, Cynthia J.; Milner, Joel S.] No Illinois Univ, Ctr Study Family Violence & Sexual Assault, De Kalb, IL 60115 USA.
   [Foster, Rachel E.; Linkh, David J.; Copeland, Carol W.] USAF, Family Advocacy Program, San Antonio, TX USA.
RP Rabenhorst, MM (reprint author), No Illinois Univ, Ctr Study Family Violence & Sexual Assault, 125 Presidents Blvd, De Kalb, IL 60115 USA.
EM mrabenho@niu.edu
NR 24
TC 7
Z9 7
U1 1
U2 15
PU EDUCATIONAL PUBLISHING FOUNDATION-AMERICAN PSYCHOLOGICAL ASSOC
PI WASHINGTON
PA 750 FIRST ST, NE, WASHINGTON, DC 20002-4242 USA
SN 2152-0828
J9 PSYCHOL VIOLENCE
JI Psychol. Violence
PD JUL
PY 2012
VL 2
IS 3
BP 273
EP 284
DI 10.1037/a0027094
PG 12
WC Psychology, Clinical; Criminology & Penology; Family Studies
SC Psychology; Criminology & Penology; Family Studies
GA 087EY
UT WOS:000314745300005
ER

PT J
AU Badiru, AB
   Jones, RR
AF Badiru, Adedeji B.
   Jones, Rochelle R.
TI Project Management for Executing Distance Education Programs
SO JOURNAL OF PROFESSIONAL ISSUES IN ENGINEERING EDUCATION AND PRACTICE
LA English
DT Article
C1 [Badiru, Adedeji B.] USAF, Inst Technol, Dept Syst & Engn Management, Wright Patterson AFB, OH 45433 USA.
   [Jones, Rochelle R.] Lockheed Martin Corp, Herndon, VA USA.
RP Badiru, AB (reprint author), USAF, Inst Technol, Dept Syst & Engn Management, Wright Patterson AFB, OH 45433 USA.
EM adedeji.badiru@afit.edu
NR 22
TC 0
Z9 0
U1 1
U2 6
PU ASCE-AMER SOC CIVIL ENGINEERS
PI RESTON
PA 1801 ALEXANDER BELL DR, RESTON, VA 20191-4400 USA
SN 1052-3928
J9 J PROF ISS ENG ED PR
JI J. Prof. Issues Eng. Educ. Pract.
PD JUL
PY 2012
VL 138
IS 3
BP 154
EP 162
DI 10.1061/(ASCE)EI.1943-5541.0000109
PG 9
WC Education, Scientific Disciplines; Engineering, Multidisciplinary
SC Education & Educational Research; Engineering
GA 069CB
UT WOS:000313411400001
ER

PT J
AU Balster, EJ
   Fradette, FD
   Scarpino, FA
   Hill, KL
AF Balster, Eric J.
   Fradette, Francis D.
   Scarpino, Frank A.
   Hill, Kerry L.
TI Time-domain matrix analysis of polyphase FIR filters
SO INTERNATIONAL JOURNAL OF ELECTRICAL ENGINEERING EDUCATION
LA English
DT Article
DE matrix representation; polyphase filtering; time-domain analysis
AB Polyphase filter design is a common subject studied in discrete systems analysis and digital signal processing (DSP) courses. However, the classic z-domain analysis, utilizing the noble identities, gives a conclusion to the true physical structures of polyphase filters which may not be obvious to many students. The proposed time-domain analysis provides a more straightforward development of polyphase implementation of interpolation and decimation functions, and hopes to provide students with a more visual representation of the polyphase interpolation and decimation processes. Results from a student survey show that over 73% of students believe that the proposed polyphase analysis strengthened their understanding of polyphase filters, and over 71% would prefer to use the proposed method over the traditional z-domain analysis when explaining polyphase filters to others.
C1 [Balster, Eric J.; Fradette, Francis D.; Scarpino, Frank A.] Univ Dayton, Dept Elect & Comp Engn, Dayton, OH 45469 USA.
   [Hill, Kerry L.] USAF, Sensors Directorate, Res Lab, Wright Patterson AFB, OH 45433 USA.
RP Balster, EJ (reprint author), Univ Dayton, Dept Elect & Comp Engn, Dayton, OH 45469 USA.
EM ebalster1@udayton.edu; ffradette1@udayton.edu; fscarpino1@udayton.edu;
   kerry.hill@wpafb.af.mil
FU Air Force Research Laboratory, Sensors Directorate
FX The authors would like to thank the Air Force Research Laboratory,
   Sensors Directorate, for funding this effort.
NR 8
TC 0
Z9 0
U1 0
U2 1
PU MANCHESTER UNIV PRESS
PI MANCHESTER
PA OXFORD RD, MANCHESTER M13 9PL, ENGLAND
SN 0020-7209
J9 INT J ELEC ENG EDUC
JI Int. J. Elec. Eng. Educ.
PD JUL
PY 2012
VL 49
IS 3
SI SI
BP 275
EP 290
DI 10.7227/IJEEE.49.3.7
PG 16
WC Education, Scientific Disciplines; Engineering, Electrical & Electronic
SC Education & Educational Research; Engineering
GA 036EJ
UT WOS:000311008900007
ER

PT J
AU Thorp, K
AF Thorp, Kate
TI Untitled
SO SAMPE JOURNAL
LA English
DT Editorial Material
C1 USAF, Res Lab, WPAFB, Washington, DC 20330 USA.
RP Thorp, K (reprint author), USAF, Res Lab, WPAFB, Washington, DC 20330 USA.
EM Katie.Thorp@frontier.com
NR 0
TC 0
Z9 0
U1 0
U2 2
PU SAMPE PUBLISHERS
PI COVINA
PA 1161 PARKVIEW DRIVE, COVINA, CA 91722 USA
SN 0091-1062
J9 SAMPE J
JI Sampe J.
PD JUL-AUG
PY 2012
VL 48
IS 4
BP 2
EP 2
PG 1
WC Engineering, Multidisciplinary; Materials Science, Multidisciplinary
SC Engineering; Materials Science
GA 963ZD
UT WOS:000305662600001
ER

PT J
AU Shiffler, D
   Fairchild, S
   Tang, W
   Maruyama, B
   Golby, K
   LaCour, M
   Pasquali, M
   Lockwood, N
AF Shiffler, Don
   Fairchild, Steve
   Tang, Wilkin
   Maruyama, Benji
   Golby, Ken
   LaCour, Matthew
   Pasquali, Matteo
   Lockwood, Nathaniel
TI Demonstration of an Acid-Spun Single-Walled Nanotube Fiber Cathode
SO IEEE TRANSACTIONS ON PLASMA SCIENCE
LA English
DT Article
DE Cathodes; electron devices; field emitter arrays; high power microwave
   generation
ID FIELD-EMISSION PROPERTIES; CARBON NANOTUBES; SPACE-CHARGE;
   ELECTRON-EMISSION; MAGNETIC-FIELD; EMITTER ARRAYS; CURRENTS; VACUUM;
   ROPES; SIMULATIONS
AB Field emission dc cold cathodes continue as an important area of research for uses such as electron microscopy, novel X-ray sources, vacuum electronic devices, terahertz sources, and high-power microwave tubes. Each of these applications typically requires high current densities with high-brightness electron beams driven by cathodes exhibiting long lifetime in the presence of deleterious conditions such as ion back bombardment and excessive heating. The Air Force Research Laboratory (AFRL) now investigates cathodes operating in dc mode for use in a terahertz traveling wave tube (TWT). The TWT requires an electron beam of 50 mu m in diameter or less, at 10s of kiloelectronvolt energy with energy spreads of less than 10 eV. While AFRL has tested numerous cathodes in this regime, this paper reports on the first demonstration of a dc cathode utilizing a highly aligned carbon nanotube (CNT) rope for the electron emitter. The rope consists of individual single-walled CNTs that have been subjected to a nitrogen-enhanced acid etch and then spun into a rope configuration. Thus, the single rope emitter has an overall diameter of 100 mu m and a length of 1.5 mm. We report on preliminary results from this cathode, in particular the fabrication of the cathode, the dc cathode test system, and the cathode operation up to a voltage of 5 kV. The cathode operates stably to within 0.6% with a 5-mm anode-cathode gap at 5 keV and 1.0-mA current for hundreds of hours. Finally, we provide estimates of the cathode parameters such as the effective field enhancement factor (beta(eff)) and emitting area (A) through a Fowler-Nordheim plot and comparison of the experimental data with simulations utilizing the particle-in-cell code Improved Concurrent Electromagnetic Particle-in-Cell.
C1 [Shiffler, Don; Tang, Wilkin; Lockwood, Nathaniel] USAF, Res Lab, Directed Energy Directorate, Kirtland AFB, NM 87117 USA.
   [Fairchild, Steve; Maruyama, Benji] USAF, Res Lab, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA.
   [Golby, Ken; LaCour, Matthew] SAIC Inc, Albuquerque, NM 87117 USA.
   [Pasquali, Matteo] Rice Univ, Houston, TX 77251 USA.
RP Shiffler, D (reprint author), USAF, Res Lab, Directed Energy Directorate, Kirtland AFB, NM 87117 USA.
EM don.shiffler@kirtland.af.mil; steve.fairchild@wpafb.af.mil;
   wilkin.tang@kirtland.af.mil; benji.maruyama@wpafb.af.mil;
   kegolby@sandia.gov; mdlacou@sandia.gov; mp@rice.edu;
   nathaniel.lockwood@kirtland.af.mil
RI Pasquali, Matteo/A-2489-2008
OI Pasquali, Matteo/0000-0001-5951-395X
FU National Research Council Research Associateship Award at Air Force
   Research Laboratory (AFRL); Air Force Office of Scientific Research
   under the AFRL LRIR program
FX This work was performed while one of the authors (W. Tang) held a
   National Research Council Research Associateship Award at Air Force
   Research Laboratory (AFRL). The authors would like to thank the Air
   Force Office of Scientific Research for their support of this project
   under the AFRL LRIR program.
NR 72
TC 10
Z9 10
U1 1
U2 26
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 0093-3813
J9 IEEE T PLASMA SCI
JI IEEE Trans. Plasma Sci.
PD JUL
PY 2012
VL 40
IS 7
BP 1871
EP 1877
DI 10.1109/TPS.2012.2195328
PN 2
PG 7
WC Physics, Fluids & Plasmas
SC Physics
GA 992UZ
UT WOS:000307806700004
ER

PT J
AU Gauer, R
   Qiu, KF
   Crawford, P
AF Gauer, Robert
   Qiu, Kefeng (Maylene)
   Crawford, Paul
TI Does blood pressure screening benefit children?
SO JOURNAL OF FAMILY PRACTICE
LA English
DT Editorial Material
ID ADOLESCENTS; RISK
C1 [Gauer, Robert] Womack Army Med Ctr, Family Med Residency Clin, Ft Bragg, NC USA.
   [Qiu, Kefeng (Maylene)] Univ Penn, Biomed Lib, Philadelphia, PA 19104 USA.
   [Crawford, Paul] Nellis AFB Family Med Residency, Nellis Afb, NV USA.
RP Gauer, R (reprint author), Womack Army Med Ctr, Family Med Residency Clin, Ft Bragg, NC USA.
NR 9
TC 2
Z9 2
U1 0
U2 0
PU DOWDEN HEALTH MEDIA
PI MONTVALE
PA 110 SUMMIT AVE, MONTVALE, NJ 07645-1712 USA
SN 0094-3509
J9 J FAM PRACTICE
JI J. Fam. Pract.
PD JUL
PY 2012
VL 61
IS 7
BP 425
EP 426
PG 2
WC Primary Health Care; Medicine, General & Internal
SC General & Internal Medicine
GA 003MR
UT WOS:000308616400009
PM 22754893
ER

PT J
AU Yan, LK
   Jayachandra, M
   Zhang, M
   Yin, H
AF Yan, Lok-Kwong
   Jayachandra, Manjukumar
   Zhang, Mu
   Yin, Heng
TI V2E: Combining Hardware Virtualization and Software Emulation for
   Transparent and Extensible Malware Analysis
SO ACM SIGPLAN NOTICES
LA English
DT Article
DE Security; Performance
AB A transparent and extensible malware analysis platform is essential for defeating malware. This platform should be transparent so malware cannot easily detect and bypass it. It should also be extensible to provide strong support for heavyweight instrumentation and analysis efficiency. However, no existing platform can meet both requirements. Leveraging hardware virtualization technology, analysis platforms like Ether can achieve good transparency, but its instrumentation support and analysis efficiency are weak. In contrast, software emulation provides strong support for code instrumentation and good analysis efficiency by using dynamic binary translation. However, analysis platforms based on software emulation can be easily detected by malware and thus is poor in transparency. To achieve both transparency and extensibility, we propose a new analysis platform that combines hardware virtualization and software emulation. The essence is precise heterogeneous replay: the malware execution is recorded via hardware virtualization and then replayed in software. Our design ensures the execution replay to be precise. Moreover, with page-level recording granularity, the platform can easily adjust to analyze various forms of malware (a process, a kernel module, or a shared library). We implemented a prototype called V2E and demonstrated its capability and efficiency by conducting an extensive evaluation with both synthetic samples and 14 realworld emulation-resistant malware samples.
C1 [Yan, Lok-Kwong; Jayachandra, Manjukumar; Zhang, Mu; Yin, Heng] Syracuse Univ, Dept Elect Engn & Comp Sci, Syracuse, NY 13244 USA.
   [Yan, Lok-Kwong] USAF, Res Lab, Rome, NY USA.
RP Yan, LK (reprint author), Syracuse Univ, Dept Elect Engn & Comp Sci, Syracuse, NY 13244 USA.
EM loyan@syr.edu; mjayacha@syr.edu; muzhang@syr.edu; heyin@syr.edu
FU US National Science Foundation NSF [1018217, 1054605]
FX We thank the anonymous reviewers for their insightful comments for
   improving this paper. This work is supported in part by the US National
   Science Foundation NSF under Grants #1018217 and #1054605. Any opinions,
   findings, and conclusions made in this material are those of the authors
   and do not necessarily reflect the views of the NSF or the Air Force
   Research Laboratory.
NR 35
TC 6
Z9 6
U1 1
U2 2
PU ASSOC COMPUTING MACHINERY
PI NEW YORK
PA 2 PENN PLAZA, STE 701, NEW YORK, NY 10121-0701 USA
SN 0362-1340
J9 ACM SIGPLAN NOTICES
JI ACM Sigplan Not.
PD JUL
PY 2012
VL 47
IS 7
BP 227
EP 237
DI 10.1145/2365864.2151053
PG 11
WC Computer Science, Software Engineering
SC Computer Science
GA 004CH
UT WOS:000308657200021
ER

PT J
AU Zhu, YY
   Tsai, CF
   Wang, J
   Kwon, JH
   Wang, HY
   Varanasi, CV
   Burke, J
   Brunke, L
   Barnes, PN
AF Zhu, Yuanyuan
   Tsai, Chen-Fong
   Wang, Jie
   Kwon, Ji Heon
   Wang, Haiyan
   Varanasi, Chakrapani V.
   Burke, Jack
   Brunke, Lyle
   Barnes, Paul N.
TI Interfacial defects distribution and strain coupling in the vertically
   aligned nanocomposite YBa2Cu3O7-X/BaSnO3 thin films
SO JOURNAL OF MATERIALS RESEARCH
LA English
DT Article
ID MATERIALS SCIENCE
AB In this article, we report the unique microstructural characteristics of YBa2Cu3O7-x(YBCO)/BaSnO3 (BSO) nanocomposite thin films on LaAlO3 (LAO) substrates. The BSO secondary phase grows as self-assembled vertically aligned nanopillars uniformly distributed in the superconducting YBCO matrix. Detailed microstructure and strain studies including x-ray diffraction, cross-section and plan-view transmission electron microscopy, and geometric phase analysis reveal that, as the BSO doping concentration varied from 2 mol% to 20 mol%, the nanopillar density increased from 0.26 x 10(11)/cm(2) to 1.44 x 10(11)/cm(2) while the diameter of the nanopillars remains relatively constant (7-8 nm in diameter). The strain state of the YBCO matrix is affected by both lateral and vertical lattice strains; while, the BSO lattice is strongly tuned by YBCO rather than the substrate. A high-density array of dislocations in the order of 10(13)/cm(2) was observed along the vertical heterogeneous interfaces throughout the YBCO film thickness for all doping concentrations.
C1 [Zhu, Yuanyuan; Tsai, Chen-Fong; Wang, Jie; Kwon, Ji Heon; Wang, Haiyan] Texas A&M Univ, Dept Elect & Comp Engn, College Stn, TX 77843 USA.
   [Varanasi, Chakrapani V.; Burke, Jack; Brunke, Lyle] Univ Dayton, Res Inst, Dayton, OH 45469 USA.
   [Barnes, Paul N.] USAF, Res Lab, Wright Patterson AFB, OH 45433 USA.
RP Wang, HY (reprint author), Texas A&M Univ, Dept Elect & Comp Engn, College Stn, TX 77843 USA.
EM wangh@ece.tamu.edu
RI Wang, Haiyan/P-3550-2014
OI Wang, Haiyan/0000-0002-7397-1209
FU Air Force Office of Scientific Research [FA9550-09-1-0114];
   AFRL-Propulsion Directorate; National Science Foundation [NSF-0846504];
   Texas AM University
FX This research was funded by the Air Force Office of Scientific Research
   (Contract No.: FA9550-09-1-0114), and AFRL-Propulsion Directorate. The
   TEM characterization effort was supported by National Science Foundation
   (NSF-0846504). J.H. Kwon was supported by the Undergraduate Summer
   Research program at Texas A&M University.
NR 31
TC 5
Z9 5
U1 5
U2 26
PU CAMBRIDGE UNIV PRESS
PI NEW YORK
PA 32 AVENUE OF THE AMERICAS, NEW YORK, NY 10013-2473 USA
SN 0884-2914
J9 J MATER RES
JI J. Mater. Res.
PD JUL
PY 2012
VL 27
IS 13
BP 1763
EP 1769
DI 10.1557/jmr.2012.125
PG 7
WC Materials Science, Multidisciplinary
SC Materials Science
GA 984KG
UT WOS:000307187900013
ER

PT J
AU Rutledge, JL
   King, PI
   Rivir, RB
AF Rutledge, James L.
   King, Paul I.
   Rivir, Richard B.
TI Influence of Film Cooling Unsteadiness on Turbine Blade Leading Edge
   Heat Flux
SO JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER-TRANSACTIONS OF THE
   ASME
LA English
DT Article
AB Film cooling in the hot gas path of a gas turbine engine can protect components from the high temperature main flow, but it generally increases the heat transfer coefficient h partially offsetting the benefits in reduced adiabatic wall temperature. We are thus interested in adiabatic effectiveness eta and h which are combined in a formulation called net heat flux reduction (NHFR). Unsteadiness in coolant flow may arise due to inherent unsteadiness in the external flow or be intentionally introduced for flow control. In previous work it has been suggested that pulsed cooling flow may, in fact, offer benefits over steady blowing in either improving NHFR or reducing the mass flow requirements for matched NHFR. In this paper we examine this hypothesis for a range of steady and pulsed blowing conditions. We use a new experimental technique to analyze unsteady film cooling on a semicircular cylinder simulating the leading edge of a turbine blade. The average NHFR with pulsed and steady film cooling is measured and compared for a single coolant hole located 21.5 degrees downstream from the leading edge stagnation line, angled 20 degrees to the surface and 90 degrees to the streamwise direction. We show that for moderate blowing ratios at blade passing frequencies, steady film flow yields better NHFR. At higher coolant flow rates beyond the optimum steady blowing ratio, however, pulsed film cooling can be advantageous. We present and demonstrate a prediction technique for unsteady blowing at frequencies similar to the blade passing frequency that only requires the knowledge of steady flow behavior. With this important result, it is possible to predict when pulsing would be beneficial or detrimental. [DOI: 10.1115/1.4005978]
C1 [Rutledge, James L.; King, Paul I.] USAF, Inst Technol, Wright Patterson AFB, OH 45433 USA.
   [Rivir, Richard B.] USAF, Res Lab, Wright Patterson AFB, OH 45433 USA.
RP Rutledge, JL (reprint author), USAF, Inst Technol, Wright Patterson AFB, OH 45433 USA.
EM james.rutledge@us.af.mil
NR 15
TC 12
Z9 12
U1 0
U2 11
PU ASME-AMER SOC MECHANICAL ENG
PI NEW YORK
PA THREE PARK AVE, NEW YORK, NY 10016-5990 USA
SN 0742-4795
J9 J ENG GAS TURB POWER
JI J. Eng. Gas. Turbines Power-Trans. ASME
PD JUL
PY 2012
VL 134
IS 7
AR 071901
DI 10.1115/1.4005978
PG 10
WC Engineering, Mechanical
SC Engineering
GA 000WF
UT WOS:000308420300006
ER

PT J
AU Fries, MD
   Matson, R
   Schaefer, J
   Fries, JA
AF Fries, Marc D.
   Matson, Robert
   Schaefer, Jake
   Fries, Jeffrey A.
TI USING WEATHER RADAR DATA FOR RAPID METEORITE RECOVERY: THE "SUTTER'S
   MILL" METEORITE FALL
SO METEORITICS & PLANETARY SCIENCE
LA English
DT Meeting Abstract
CT 75th Annual Meeting of the Meteoritical-Society
CY AUG 12-17, 2012
CL Cairns, AUSTRALIA
SP Meteorit Soc, Australian Natl Univ, Australian Sci Instruments, Barringer Crater Co, Cameca, Australian Govt, Dept Ind, Innovat Sci, Res & Tertiary Educ, IMCA, Japan Aerosp Explorat Agcy, Lunar & Planetary Inst, NASA, Planetary Studies Fdn, ThermoFisher Sci
C1 [Fries, Marc D.] Planetary Sci Inst, Tucson, AZ USA.
   [Matson, Robert] SAIC, Seal Beach, CA USA.
   [Fries, Jeffrey A.] USAF, Weather Agcy, Weather Grp 1, Offutt AFB, OH USA.
EM fries@psi.edu
NR 5
TC 0
Z9 0
U1 0
U2 1
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 1086-9379
J9 METEORIT PLANET SCI
JI Meteorit. Planet. Sci.
PD JUL
PY 2012
VL 47
SU 1
SI SI
BP A140
EP A140
PG 1
WC Geochemistry & Geophysics
SC Geochemistry & Geophysics
GA 987AV
UT WOS:000307389700107
ER

PT J
AU Wisco, OJ
   Sober, AJ
AF Wisco, Oliver J.
   Sober, Arthur J.
TI Prognostic Factors for Melanoma
SO DERMATOLOGIC CLINICS
LA English
DT Article
DE Melanoma; Prognosis; Histology; Biomarkers; Survival
ID PRIMARY CUTANEOUS MELANOMA; SOLID-ORGAN TRANSPLANT; STAGE-IV-MELANOMA;
   MALIGNANT-MELANOMA; METASTATIC MELANOMA; UNITED-STATES; UNKNOWN PRIMARY;
   SENTINEL NODES; PREGNANCY; SURVIVAL
AB The current melanoma staging system, as defined by the American Joint Committee on Cancer (AJCC), is the standard by which melanoma prognosis is determined. This article focuses on the components of the AJCC melanoma staging system regarding patient prognosis. In addition, this article summarizes the other commonly researched clinical and histologic melanoma prognostic factors and reviews the recent advancements in genetic biomarkers associated with prognosis.
C1 [Wisco, Oliver J.] 81st Med Grp, Dermatol Clin, Keesler AFB, MS 39534 USA.
   [Wisco, Oliver J.] Massachusetts Gen Hosp, Wellman Ctr Photobiol Res, Boston, MA 02114 USA.
   [Sober, Arthur J.] Harvard Univ, Massachusetts Gen Hosp, Sch Med, Dept Dermatol, Boston, MA 02114 USA.
RP Wisco, OJ (reprint author), 81 MDOS SGOMD,301 Fisher St,Suite 1F-136, Keesler AFB, MS 39534 USA.
EM wiscooj@gmail.com
NR 65
TC 9
Z9 11
U1 0
U2 5
PU W B SAUNDERS CO-ELSEVIER INC
PI PHILADELPHIA
PA 1600 JOHN F KENNEDY BOULEVARD, STE 1800, PHILADELPHIA, PA 19103-2899 USA
SN 0733-8635
J9 DERMATOL CLIN
JI Dermatol. Clin.
PD JUL
PY 2012
VL 30
IS 3
BP 469
EP +
DI 10.1016/j.det.2012.04.008
PG 18
WC Dermatology
SC Dermatology
GA 982EA
UT WOS:000307023600011
PM 22800552
ER

PT J
AU Li, Y
   Jayaweera, SK
   Bkassiny, M
   Avery, KA
AF Li, Yang
   Jayaweera, Sudharman K.
   Bkassiny, Mario
   Avery, Keith A.
TI Optimal Myopic Sensing and Dynamic Spectrum Access in Cognitive Radio
   Networks with Low-Complexity Implementations
SO IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS
LA English
DT Article
DE Cognitive radios; dynamic spectrum access (DSA); Markov chains;
   partially observable Markov decision processes (POMDP); Hungarian
   algorithm; Neyman-Pearson detector; myopic sensing; Hidden Markov Model
   (HMM)
ID MULTICHANNEL OPPORTUNISTIC ACCESS; ALGORITHMS; CHANNEL
AB Cognitive radio techniques allow secondary users (SU's) to opportunistically access underutilized primary channels that are licensed to primary users. We consider a group of SU's with limited spectrum sensing capabilities working cooperatively to find primary channel spectrum holes. The objective is to design the optimal sensing and access policies that maximize the total secondary throughput on primary channels accrued over time. Although the problem can be formulated as a Partially Observable Markov Decision Process (POMDP), the optimal solutions are intractable. Instead, we find the optimal sensing policy within the class of myopic policies. Compared to other existing approaches, our policy is more realistic because it explicitly assigns SU's to sense specific primary channels by taking into account spatial and temporal variations of primary channels. Contributions: 1) formulation of a centralized spectrum sensing/access architecture that allows exploitation of all available primary spectrum holes; and 2) proposing sub-optimal myopic sensing policies with low-complexity implementations and performance close to the myopic policy. We show that our proposed sensing/access policy is close to the optimal POMDP solution and outperforms other proposed strategies. We also propose a Hidden Markov Model based algorithm to estimate the parameters of primary channel Markov models with a linear complexity.
C1 [Li, Yang; Bkassiny, Mario] Univ New Mexico, Dept Elect & Comp Engn, CISL, Albuquerque, NM 87131 USA.
   [Avery, Keith A.] USAF, Space Vehicles Directorate, Res Lab, Albuquerque, NM USA.
RP Li, Y (reprint author), Univ New Mexico, Dept Elect & Comp Engn, CISL, Albuquerque, NM 87131 USA.
EM yangli@ece.unm.edu; jayaweera@ece.unm.edu; bkassiny@ece.unm.edu
FU Space Vehicles Directorate of the Air Force Research Laboratory (AFRL),
   Kirtland AFB, Albuquerque, NM; National Science foundation (NSF)
   [CCF-0830545]
FX This research was supported in part by the Space Vehicles Directorate of
   the Air Force Research Laboratory (AFRL), Kirtland AFB, Albuquerque, NM
   and by the National Science foundation (NSF) under the grant
   CCF-0830545.
NR 22
TC 15
Z9 15
U1 0
U2 6
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 1536-1276
J9 IEEE T WIREL COMMUN
JI IEEE Trans. Wirel. Commun.
PD JUL
PY 2012
VL 11
IS 7
BP 2412
EP 2423
DI 10.1109/TWC.2012.050112.110152
PG 12
WC Engineering, Electrical & Electronic; Telecommunications
SC Engineering; Telecommunications
GA 976QU
UT WOS:000306600200007
ER

PT J
AU Jeans, TL
   Jirasek, A
   McDaniel, DR
   Bergeron, K
   Cummings, RM
AF Jeans, Tiger L.
   Jirasek, Adam
   McDaniel, David R.
   Bergeron, Keith
   Cummings, Russell M.
TI Modeling the Nonlinear Dynamic Roll of Generic Fighter Using Delayed
   Detached-Eddy Simulation
SO JOURNAL OF AIRCRAFT
LA English
DT Article; Proceedings Paper
CT 47th AIAA Aerospace Sciences Meeting and Exhibit/New Horizons Forum and
   Aerospace Exposition
CY JAN 05-08, 2009
CL Orlando, FL
SP Amer Inst Aeronaut & Astronaut (AIAA)
ID TURBULENCE; FLOWS
AB Recent research at the U.S. Air Force Academy Modeling and Simulation Research Center has focused on developing nonlinear lower-order aerodynamic loads models from unsteady computational fluid dynamics (CM) simulations. The long-term objective is to develop a high-fidelity computational tool capable of identifying aircraft configurations susceptible to handling quality instabilities before flight testing. In this paper, this approach is validated for a generic tighter having a chined fuselage-delta-wing configuration and known aerodynamic instability occurring well within the flight envelope. Previous static experiments and CFD simulations have shown that asymmetric vortex bursting occurs at angles of attack greater than 23 (leg and low angles of sideslip, resulting in significant nonlinearities in lateral stability. The dynamic effects on this instability are investigated using delayed detached-eddy simulation and prescribed motion-constant frequency maneuvers ranging from 1.43 Hz to 17.1 Hz. Results show that the aerodynamic response is highly dependent on frequency. At lower frequencies, there is a significant convective time lag, resulting in a shift of the static nonlinearity to greater sideslip angles. As the frequency was increased, the severity of the nonlinearity was reduced such that, at 17.1 Hz, the aerodynamic response is nearly linear. Aerodynamic loads resulting from a chirp maneuver are then used as input to a lower-order model employing radial basis functions. The resulting aerodynamic loads model is then used to predict the vastly different aerodynamic response of each constant frequency maneuver with good success.
C1 [Jeans, Tiger L.; Jirasek, Adam] USAF Acad, Colorado Springs, CO 80840 USA.
   [McDaniel, David R.] Univ Alabama Birmingham, Dept Mech Engn, Birmingham, AL 35294 USA.
   [Bergeron, Keith] USAF Acad, Modeling & Simulat Res Ctr, Dept Aeronaut, Colorado Springs, CO 80840 USA.
RP Jeans, TL (reprint author), Univ New Brunswick, Dept Mech Engn, Fredericton, NB E3B 5A3, Canada.
EM tjeans@unb.ca
NR 56
TC 0
Z9 0
U1 0
U2 4
PU AMER INST AERONAUT ASTRONAUT
PI RESTON
PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091-4344 USA
SN 0021-8669
J9 J AIRCRAFT
JI J. Aircr.
PD JUL-AUG
PY 2012
VL 49
IS 4
BP 1110
EP 1125
DI 10.2514/1.C031613
PG 16
WC Engineering, Aerospace
SC Engineering
GA 988XH
UT WOS:000307524300014
ER

PT J
AU Muller, RR
AF Muller, Richard R.
TI The German Aces Speak: World War II Through the Eyes of Four of the
   Luftwaffe's Most Important Commanders
SO JOURNAL OF MILITARY HISTORY
LA English
DT Book Review
C1 [Muller, Richard R.] USAF, Sch Adv Air & Space Studies, Maxwell AFB, Montgomery, AL USA.
RP Muller, RR (reprint author), USAF, Sch Adv Air & Space Studies, Maxwell AFB, Montgomery, AL 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 JUL
PY 2012
VL 76
IS 3
BP 914
EP 916
PG 3
WC History
SC History
GA 974OJ
UT WOS:000306445500051
ER

PT J
AU Beal, B
   Johnson, L
   Brown, D
   Blakely, J
   Bromaghim, D
AF Beal, Brian
   Johnson, Lee
   Brown, Daniel
   Blakely, Joseph
   Bromaghim, Daron
TI Improved analysis techniques for cylindrical and spherical double probes
SO REVIEW OF SCIENTIFIC INSTRUMENTS
LA English
DT Article
ID LANGMUIR PROBE; PLASMA; PARAMETRIZATION
AB A versatile double Langmuir probe technique has been developed by incorporating analytical fits to Laframboise's numerical results for ion current collection by biased electrodes of various sizes relative to the local electron Debye length. Application of these fits to the double probe circuit has produced a set of coupled equations that express the potential of each electrode relative to the plasma potential as well as the resulting probe current as a function of applied probe voltage. These equations can be readily solved via standard numerical techniques in order to determine electron temperature and plasma density from probe current and voltage measurements. Because this method self-consistently accounts for the effects of sheath expansion, it can be readily applied to plasmas with a wide range of densities and low ion temperature (T-i/T-c << 1) without requiring probe dimensions to be asymptotically large or small with respect to the electron Debye length. The presented approach has been successfully applied to experimental measurements obtained in the plume of a low-power Hall thruster, which produced a quasineutral, flowing xenon plasma during operation at 200 W on xenon. The measured plasma densities and electron temperatures were in the range of 1 x 10(12)-1 x 10(17) m(-3) and 0.5-5.0 eV, respectively. The estimated measurement uncertainty is +6%/-34% in density and +/-30% in electron temperature. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4739221]
C1 [Beal, Brian; Brown, Daniel; Bromaghim, Daron] USAF, Res Lab, Edwards AFB, CA 93524 USA.
   [Johnson, Lee] CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA.
   [Blakely, Joseph] ERC Inc, Edwards AFB, CA 93524 USA.
RP Beal, B (reprint author), USAF, Res Lab, 1 Ara Rd, Edwards AFB, CA 93524 USA.
EM brian.beal@edwards.af.mil
NR 19
TC 1
Z9 1
U1 3
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 0034-6748
J9 REV SCI INSTRUM
JI Rev. Sci. Instrum.
PD JUL
PY 2012
VL 83
IS 7
AR 073506
DI 10.1063/1.4739221
PG 5
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA 988YR
UT WOS:000307527900031
PM 22852694
ER

PT J
AU Lewis, WK
   Harruff-Miller, BA
   Gord, MA
   Gord, JR
   Guliants, EA
   Bunker, CE
AF Lewis, William K.
   Harruff-Miller, Barbara A.
   Gord, Michael A.
   Gord, Joseph R.
   Guliants, Elena A.
   Bunker, Christopher E.
TI A threshold-based approach to calorimetry in helium droplets:
   Measurement of binding energies of water clusters
SO REVIEW OF SCIENTIFIC INSTRUMENTS
LA English
DT Article
ID CARBON CLUSTERS; HE-4 CLUSTERS; AL CLUSTERS; SPECTROSCOPY; LIQUID;
   NANODROPLETS; MOLECULES; DENSITY; COMPLEXES; ATOMS
AB Helium droplet beam methods have emerged as a versatile technique that can be used to assemble a wide variety of atomic and molecular clusters. We have developed a method to measure the binding energies of clusters assembled in helium droplets by determining the minimum droplet sizes required to assemble and detect selected clusters in the spectrum of the doped droplet beam. The differences in the droplet sizes required between the various multimers are then used to estimate the incremental binding energies. We have applied this method to measure the binding energies of cyclic water clusters from the dimer to the tetramer. We obtain measured values of D-0 that are in agreement with theoretical estimates to within similar to 20%. Our results suggest that this threshold-based approach should be generally applicable using either mass spectrometry or optical spectroscopy techniques for detection, provided that the clusters selected for study are at least as strongly bound as those of water, and that a peak in the overall spectrum of the beam corresponding only to the cluster chosen (at least in the vicinity of the threshold) can be located. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4738664]
C1 [Lewis, William K.; Harruff-Miller, Barbara A.; Gord, Michael A.; Gord, Joseph R.; Guliants, Elena A.] Univ Dayton, Res Inst, Dayton, OH 45469 USA.
   [Bunker, Christopher E.] USAF, Res Lab, Prop Directorate, Wright Patterson AFB, OH 45433 USA.
RP Lewis, WK (reprint author), Univ Dayton, Res Inst, Dayton, OH 45469 USA.
EM wlewis2@udayton.edu
FU (U.S.) Air Force Office of Scientific Research (AFOSR); Air Force
   Research Laboratory (AFRL) through Nanoenergetics
FX We gratefully acknowledge funding from the (U.S.) Air Force Office of
   Scientific Research (AFOSR) through the support of Dr. Michael Berman,
   and the Air Force Research Laboratory (AFRL) through the support of
   Nanoenergetics.
NR 41
TC 4
Z9 4
U1 0
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 0034-6748
J9 REV SCI INSTRUM
JI Rev. Sci. Instrum.
PD JUL
PY 2012
VL 83
IS 7
AR 073109
DI 10.1063/1.4738664
PG 5
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA 988YR
UT WOS:000307527900010
PM 22852673
ER

PT J
AU Stone, S
   Temple, M
AF Stone, Samuel
   Temple, Michael
TI Radio-frequency-based anomaly detection for programmable logic
   controllers in the critical infrastructure
SO INTERNATIONAL JOURNAL OF CRITICAL INFRASTRUCTURE PROTECTION
LA English
DT Article
DE SCADA systems; Programmable logic controllers; Radio frequency
   emissions; Anomaly detection
AB Advances in the processing power and efficiency of computers have led to the proliferation of information technology (IT) systems in nearly every aspect of our daily lives. The pervasiveness and reliance on IT systems, however, have increased the susceptibility to cyber attacks. This is of particular concern with regard to supervisory control and data acquisition (SCADA) systems in the critical infrastructure. Compromises of SCADA systems - in particular, the programmable logic controllers (PLCs) used as field devices to control and monitor remote processes - could have devastating consequences. However, because of their limited onboard computing resources (e.g., processing power and memory), conventional bit-level IT security mechanisms are not well suited to safeguarding PLCs.
   This paper describes a methodology for detecting anomalous operations of PLCs. The methodology uses information extracted from radio frequency (RF) features to identify changes in operating characteristics due to malicious actions or system failure. The experimental results demonstrate the utility of the RF-based anomaly detection methodology for PLC verification. (C) 2012 Published by Elsevier B.V.
C1 [Stone, Samuel; Temple, Michael] USAF, Inst Technol, Dept Elect & Comp Engn, Wright Patterson AFB, OH 45433 USA.
RP Temple, M (reprint author), USAF, Inst Technol, Dept Elect & Comp Engn, 2950 Hobson Way, Wright Patterson AFB, OH 45433 USA.
EM michael.temple@afit.edu
NR 18
TC 3
Z9 3
U1 0
U2 9
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 1874-5482
J9 INT J CRIT INFR PROT
JI Int. J. Crit. Infrastruct. Prot.
PD JUL
PY 2012
VL 5
IS 2
BP 66
EP 73
DI 10.1016/j.ijcip.2012.05.001
PG 8
WC Computer Science, Information Systems; Engineering, Multidisciplinary
SC Computer Science; Engineering
GA 982YN
UT WOS:000307081800003
ER

PT J
AU Pahud, DM
   Merkin, VG
   Arge, CN
   Hughes, WJ
   McGregor, SM
AF Pahud, D. M.
   Merkin, V. G.
   Arge, C. N.
   Hughes, W. J.
   McGregor, S. M.
TI An MHD simulation of the inner heliosphere during Carrington rotations
   2060 and 2068: Comparison with MESSENGER and ACE spacecraft observations
SO JOURNAL OF ATMOSPHERIC AND SOLAR-TERRESTRIAL PHYSICS
LA English
DT Article
DE Inner heliosphere; Corotation interaction region; LFM-helio; Modeling
ID COROTATING INTERACTION REGIONS; SOLAR-WIND; 3-DIMENSIONAL MODEL; DRIVEN;
   CME; STREAMS; TILTS
AB We present results from a new magnetohydrodynamic (MHD) model of the inner heliosphere. The model is adapted from the well-established Lyon-Fedder-Mobarry (LFM) MHD simulation code, which until recently mostly applied to studies of the terrestrial magnetosphere. We perform quasi steady-state simulations of two Carrington rotations: 2060 and 2068. During both of these periods, the heliosphere remained quiet and undisturbed by transient phenomena, making them well-suited for simulation studies of Corotating Interaction Regions (CIRs). The MHD model of the solar wind is driven at the inner boundary by the Wang-Sheeley-Arge (WSA) model of the corona augmented with empirical relations to infer the solar wind velocity, density, and temperature. Here we report on a validation exercise whereby LFM-helio simulation results are compared with in situ data from the Advanced Composition Explorer (ACE) and MErcury Surface, Space ENvironment, GEochemistry and Ranging (MESSENGER) spacecraft. We find that the model successfully reproduces the large-scale configuration of the inner heliosphere, namely timing and duration of high-speed streams and heliospheric current sheet crossings, as reflected in ACE and MESSENGER observations. Discrepancies between in situ measurements and simulations, such as 1-2 day errors in the time of arrival of a CIR or the strength of the simulated magnetic field at the spacecraft, are attributed to the uncertainty in the specification of the coronal conditions, rather than a poor performance of the solar wind model. More comparisons between different inner heliosphere models driven with identical coronal conditions are suggested as a way to explore their comparative strengths and weaknesses. (C) 2012 Elsevier Ltd. All rights reserved.
C1 [Pahud, D. M.; Hughes, W. J.; McGregor, S. M.] Boston Univ, Dept Astron, Boston, MA 02215 USA.
   [Merkin, V. G.] Johns Hopkins Univ, Appl Phys Lab, Laurel, MD 20723 USA.
   [Arge, C. N.] USAF, Res Lab, Kirtland Air Force Base, Albuquerque, NM USA.
RP Pahud, DM (reprint author), Boston Univ, Dept Astron, 725 Commonwealth Ave, Boston, MA 02215 USA.
EM dpahud@bu.edu
RI Merkin, Viacheslav/D-5982-2016
OI Merkin, Viacheslav/0000-0003-4344-5424
FU National Science Foundation (NSF) [ATM-012950]; Natural Sciences and
   Engineering Research Council of Canada
FX This research was supported by the National Science Foundation (NSF)
   under agreement ATM-012950, which funds the Center for Integrated Space
   Weather Modeling (CISM), an NSF Science and Technology Center (STC). The
   computations were performed on Kraken and visualized partly on Nautilus
   at the National Institute for Computational Sciences
   (http://www.nics.tennessee.edu/) through an allocation of advanced
   computing resources provided by the National Science Foundation. The
   authors would like to acknowledge the ACE Solar Wind Electron Proton
   Alpha Monitor (SWEPAM) and Magnetic Field Instrument (MFI) instrument
   teams and principal investigators, D.J. McComas of the South West
   Research Institute and N. Ness at Bartol Research Institute, as well as
   thank the ACE Science Center for providing the ACE plasma and magnetic
   field data. The authors would also like to acknowledge B.J. Anderson, of
   the Applied Physics Laboratory, the MESSENGER magnetometer (MAG) team
   and the NASA Planetary Data System for the use of the MESSENGER magnetic
   field data. D.M. Pahud would like to acknowledge the support of PGS D
   from the Natural Sciences and Engineering Research Council of Canada.
NR 30
TC 6
Z9 7
U1 0
U2 3
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 1364-6826
EI 1879-1824
J9 J ATMOS SOL-TERR PHY
JI J. Atmos. Sol.-Terr. Phys.
PD JUL
PY 2012
VL 83
SI SI
BP 32
EP 38
DI 10.1016/j.jastp.2012.02.012
PG 7
WC Geochemistry & Geophysics; Meteorology & Atmospheric Sciences
SC Geochemistry & Geophysics; Meteorology & Atmospheric Sciences
GA 978TA
UT WOS:000306767500005
ER

PT J
AU Eyink, KG
   Grazulis, L
   Mahalingam, K
   Shoaf, J
   Hart, V
   Esposito, D
   Hoelscher, J
   Twyman, M
   Tomich, DH
AF Eyink, Kurt G.
   Grazulis, Lawrence
   Mahalingam, Krishnamurthy
   Shoaf, Jodie
   Hart, Veronica
   Esposito, Daniel
   Hoelscher, John
   Twyman, Marlon
   Tomich, David H.
TI Nanofabricated quantum dot array formation through annealing of
   nano-patterned planar InAs
SO JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B
LA English
DT Article
ID LITHOGRAPHY; SURFACES; GROWTH; STRAIN
AB Quantum dots (QDs) are typically formed using a self-assembly process that results in random placement and size distributions, thus limiting their applicability for many devices. In this work, we report a process which uses nano-patterned planar InAs and subsequent annealing under As stabilized conditions to produce QDs with uniform placement and size distribution. The authors demonstrate the ability to form ordered QD arrays with a density of 3 x 10(10) dots/cm(2) and QD base widths of <30 nm. The authors achieved photoluminescence from the patterned area at a temperature below 100 K. [http://dx.doi.org/10.1116/1.4731471]
C1 [Eyink, Kurt G.; Grazulis, Lawrence; Mahalingam, Krishnamurthy; Shoaf, Jodie; Hart, Veronica; Esposito, Daniel; Hoelscher, John; Twyman, Marlon; Tomich, David H.] USAF, Mat Lab, AFRL RXPS, Wright Patterson AFB, OH 45433 USA.
RP Eyink, KG (reprint author), USAF, Mat Lab, AFRL RXPS, Wright Patterson AFB, OH 45433 USA.
EM kurt.eyink@wpafb.af.mil
NR 22
TC 0
Z9 0
U1 0
U2 4
PU A V S AMER INST PHYSICS
PI MELVILLE
PA STE 1 NO 1, 2 HUNTINGTON QUADRANGLE, MELVILLE, NY 11747-4502 USA
SN 1071-1023
J9 J VAC SCI TECHNOL B
JI J. Vac. Sci. Technol. B
PD JUL
PY 2012
VL 30
IS 4
AR 041806
DI 10.1116/1.4731471
PG 7
WC Engineering, Electrical & Electronic; Nanoscience & Nanotechnology;
   Physics, Applied
SC Engineering; Science & Technology - Other Topics; Physics
GA 978NT
UT WOS:000306750700040
ER

PT J
AU Podila, R
   Rao, R
   Tsuchikawa, R
   Ishigami, M
   Rao, AM
AF Podila, Ramakrishna
   Rao, Rahul
   Tsuchikawa, Ryuichi
   Ishigami, Masa
   Rao, Apparao M.
TI Raman Spectroscopy of Folded and Scrolled Graphene
SO ACS NANO
LA English
DT Article
DE folded graphene; Raman spectroscopy; Fermi velocity; graphene scrolls
ID CARBON NANOSCROLLS; STACKING ORDER; GRAPHITE
AB Here we examine the effects of folding and scrolling on the Raman spectra of mechanically exfoliated single- and bilayer graphene prepared on SiO2 substrates. We find that incommensurate folding in bilayer graphene results in a shift of the second-order G' band frequency, similar to that observed in folded single-layer graphene due to fold-induced changes in the phonon/electronic energy dispersion. Importantly, we show that the contrasting Raman shifts reported for the G' band frequency in folded graphene can be rationalized by taking into account the relative strength of fold-induced electron/phonon renormalization. More interestingly, we find that curvature in scrolled graphene lifts the degeneracy of the G band and results in a splitting of the G band and the appearance of low-frequency radial breathing-like (RBLM) modes. This study highlights a variety of Raman signatures for fold-induced and curvature-induced graphene and sets the stage for further theoretical and experimental studies of these novel structures.
C1 [Podila, Ramakrishna; Rao, Apparao M.] Clemson Univ, Dept Phys & Astron, Clemson, SC 29634 USA.
   [Podila, Ramakrishna] E Carolina Univ, Brody Sch Med, Dept Pharmacol & Toxicol, Greenville, NC 27834 USA.
   [Rao, Rahul] USAF, Mat & Mfg Directorate, Res Lab, Wright Patterson AFB, OH 45433 USA.
   [Tsuchikawa, Ryuichi; Ishigami, Masa] Univ Cent Florida, Dept Phys, Orlando, FL 32816 USA.
   [Tsuchikawa, Ryuichi; Ishigami, Masa] Univ Cent Florida, Nanosci Technol Ctr, Orlando, FL 32816 USA.
   [Rao, Apparao M.] Clemson Univ, Ctr Opt Mat Sci & Technol, Clemson, SC 29634 USA.
RP Rao, AM (reprint author), Clemson Univ, Dept Phys & Astron, Clemson, SC 29634 USA.
EM arao@clemson.edu
RI Podila, Ramakrishna/H-6226-2012; 
OI Rao, Rahul/0000-0002-6415-0185; Podila, Ramakrishna/0000-0003-0472-2361
FU AFOSR; National Research Council; National Science Foundation [0955625]
FX R.R. gratefully acknowledges funding from AFOSR and the National
   Research Council Postdoctoral Fellowship program. R.T. and M.I. were
   supported by the National Science Foundation under Grant No. 0955625.
NR 36
TC 20
Z9 21
U1 6
U2 100
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1936-0851
J9 ACS NANO
JI ACS Nano
PD JUL
PY 2012
VL 6
IS 7
BP 5784
EP 5790
DI 10.1021/nn302331p
PG 7
WC Chemistry, Multidisciplinary; Chemistry, Physical; Nanoscience &
   Nanotechnology; Materials Science, Multidisciplinary
SC Chemistry; Science & Technology - Other Topics; Materials Science
GA 977OL
UT WOS:000306673800006
PM 22738128
ER

PT J
AU Miracle, DB
AF Miracle, Daniel B.
TI A Physical Model for Metallic Glass Structures: An Introduction and
   Update
SO JOM
LA English
DT Article
ID MG-CA SYSTEM; FORMING COMPOSITIONS; CLUSTER PACKING; ATOMIC PACKING;
   ALLOYS; PREDICTION; ORDER
AB For many years, the atomic structure of metallic glasses eluded a simple physical description. Inspired by the efficient filling of space with atoms of different sizes, a model has been developed by constructing efficiently packed atomic clusters and then efficiently filling space with these clusters. This model gives a simple physical picture of the origin of short-range and medium-range order in metallic glasses, and also gives quantitative agreement with measurements that span length scales from nearest-neighbor atoms to global properties. A brief outline of the development and application of the efficient cluster packing model is given. Recent modifications to this model and remaining questions that form the basis of continued work are described.
C1 USAF, Res Lab, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA.
RP Miracle, DB (reprint author), USAF, Res Lab, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA.
EM daniel.miracle@wpafb.af.mil
FU Defense Advanced Research Projects Agency (DARPA); Air Force Office of
   Scientific Research (AFOSR)
FX The author is grateful for support over the past 10 years, including
   funding from the Defense Advanced Research Projects Agency (DARPA; Dr.
   L. Christodoulou, Program Manager) and the Air Force Office of
   Scientific Research (AFOSR; Drs. C. Hartley, J. Tiley, J. Fuller, and M.
   Berman). The author is also sincerely indebted to the many colleagues
   and collaborators who have freely shared their insights, information,
   and inspirations.
NR 30
TC 12
Z9 12
U1 3
U2 39
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 1047-4838
J9 JOM-US
JI JOM
PD JUL
PY 2012
VL 64
IS 7
BP 846
EP 855
DI 10.1007/s11837-012-0359-4
PG 10
WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical
   Engineering; Mineralogy; Mining & Mineral Processing
SC Materials Science; Metallurgy & Metallurgical Engineering; Mineralogy;
   Mining & Mineral Processing
GA 981EZ
UT WOS:000306951000017
ER

PT J
AU Cheng, L
   Torres, Y
   Lee, KM
   McClung, AJ
   Baur, J
   White, TJ
   Oates, WS
AF Cheng, Liang
   Torres, Yanira
   Lee, Kyung Min
   McClung, Amber J.
   Baur, Jeffery
   White, Timothy J.
   Oates, William S.
TI Photomechanical bending mechanics of polydomain azobenzene liquid
   crystal polymer network films
SO JOURNAL OF APPLIED PHYSICS
LA English
DT Article
ID EXACT SHELL-MODEL; COMPUTATIONAL ASPECTS; LIGHT; ACTUATORS; DYNAMICS
AB Glassy, polydomain azobenzene liquid crystal polymer networks (azo-LCNs) have been synthesized, characterized, and modeled to understand composition dependence on large amplitude, bidirectional bending, and twisting deformation upon irradiation with linearly polarized blue-green (440-514 nm) light. These materials exhibit interesting properties for adaptive structure applications in which the shape of the photoresponsive material can be rapidly reconfigured with light. The basis for the photomechanical output observed in these materials is absorption of actinic light by azobenzene, which upon photoisomerization dictates an internal stress within the local polymer network. The photoinduced evolution of the underlying liquid crystal microstructure is manifested as macroscopic deformation of the glassy polymer film. Accordingly, this work examines the polarization-controlled bidirectional bending of highly concentrated azo-LCN materials and correlates the macroscopic output (observed as bending) to measured blocked stresses upon irradiation with blue-green light of varying polarization. The resulting photomechanical output is highly dependent on the concentration of crosslinked azobenzene mesogens employed in the formulation. Experiments that quantify photomechanical bending and photogenerated stress are compared to a large deformation photomechanical shell model to quantify the effect of polarized light interactions with the material during static and dynamic polarized light induced deformation. The model comparisons illustrate differences in internal photostrain and deformation rates as a function of composition and external mechanical constraints. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4729771]
C1 [Cheng, Liang; Torres, Yanira; Oates, William S.] Florida A&M & Florida State Univ, Dept Mech Engn, FCAAP, Tallahassee, FL 32310 USA.
   [Lee, Kyung Min; McClung, Amber J.; Baur, Jeffery; White, Timothy J.] USAF, Res Lab, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA.
RP Oates, WS (reprint author), Florida A&M & Florida State Univ, Dept Mech Engn, FCAAP, Tallahassee, FL 32310 USA.
EM chengli@eng.fsu.edu; ykt07@my.fsu.edu; kyungmin.lee@wpafb.af.mil;
   amber.mcclung@wpafb.af.mil; jeffery.baur@wpafb.af.mil;
   timothy.white2@wpafb.af.mil; woates@eng.fsu.edu
RI White, Timothy/D-4392-2012
FU DARPA YFA [N66001-09-1-2105]; NSF [1054465]; Materials and Manufacturing
   Directorate of the Air Force Research Laboratory
FX L.C., Y.T., and W.S.O gratefully acknowledge support through the DARPA
   YFA Grant No. N66001-09-1-2105 and a NSF CAREER award (Grant No.
   1054465). Y.T. acknowledges support from the Minority Leaders Program at
   the Materials and Manufacturing Directorate of the Air Force Research
   Laboratory. Any opinions, findings, and conclusions or recommendations
   expressed in this publication are those of the authors and do not
   necessarily reflect the views of the funding sponsors.
NR 40
TC 31
Z9 31
U1 3
U2 74
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
   MELVILLE, NY 11747-4501 USA
SN 0021-8979
EI 1089-7550
J9 J APPL PHYS
JI J. Appl. Phys.
PD JUL 1
PY 2012
VL 112
IS 1
AR 013513
DI 10.1063/1.4729771
PG 16
WC Physics, Applied
SC Physics
GA 975LS
UT WOS:000306513400033
ER

PT J
AU Briones, AM
   Ervin, JS
   Byrd, LW
   Putnam, SA
   White, A
   Jones, JG
AF Briones, Alejandro M.
   Ervin, Jamie S.
   Byrd, Larry W.
   Putnam, Shawn A.
   White, Ashley
   Jones, John G.
TI Evaporation Characteristics of Pinned Water Microdroplets
SO JOURNAL OF THERMOPHYSICS AND HEAT TRANSFER
LA English
DT Article; Proceedings Paper
CT 42nd AIAA Thermophysics Conference
CY JUN 27-30, 2011
CL Honolulu, HI
SP AIAA
ID COOLING HEAT-TRANSFER; THERMAL-RADIATION; DROPLET; SURFACE; FLOW;
   DYNAMICS
AB A numerical-experimental investigation of pinned, water microdroplet evaporation on a flat surface maintained at a constant temperature was conducted. The effect of the accommodation coefficient (epsilon) and initial droplet curvature (kappa(0)) on the evaporation characteristics was investigated. With decreasing epsilon, the droplet's thermal Marangoni-driven recirculating flow is weakened. Consequently, the wall heat flux (q(wall)'') is reduced while the wall shear stress (tau(wall)) remains almost unaffected, and the droplet lifetime (tau) is extended. Thermal resistance is controlled by the evaporating liquid-gas interface, and the time-averaged overall heat transfer coefficient ( (U) over bar) decreases with decreasing epsilon. The evaporation rate for water is sensitive to small changes in epsilon. Both predictions and measurements indicate that the net effect of decreasing kappa(0) is to increase tau. There are two reasons for this: 1) larger droplets require more total energy than smaller droplets for full evaporation; 2) larger droplets, which consequently are exposed to lower surface tension forces than smaller droplets, develop weaker thermalMarangoni flows, yielding reduced flow recirculation, which in turn diminish q(wall)'' and (U) over bar. Although the numerical results under- and overpredict tau for larger and smaller droplets, respectively, there are good qualitative comparisons. Lastly, a three-dimensional model was validated Ugainst the axisymmetric model for early and intermediate stages of evaporation.
C1 [Briones, Alejandro M.; Ervin, Jamie S.] Univ Dayton, Res Inst, Energy & Environm Engn Div, Dayton, OH 45469 USA.
   [Byrd, Larry W.] USAF, Res Lab, AFRL RZPS, Wright Patterson AFB, OH 45433 USA.
   [Putnam, Shawn A.] Univ Technol Corp, Dayton, OH 45434 USA.
   [White, Ashley] Univ Dayton, Dept Mech Engn, Dayton, OH 45469 USA.
   [Jones, John G.] USAF, Res Lab, AFRL RXBT, Wright Patterson AFB, OH 45433 USA.
RP Briones, AM (reprint author), Univ Dayton, Res Inst, Energy & Environm Engn Div, 300 Coll Park 0043, Dayton, OH 45469 USA.
NR 49
TC 8
Z9 8
U1 0
U2 14
PU AMER INST AERONAUT ASTRONAUT
PI RESTON
PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091-4344 USA
SN 0887-8722
J9 J THERMOPHYS HEAT TR
JI J. Thermophys. Heat Transf.
PD JUL-SEP
PY 2012
VL 26
IS 3
BP 480
EP 493
DI 10.2514/1.T3806
PG 14
WC Thermodynamics; Engineering, Mechanical
SC Thermodynamics; Engineering
GA 979LU
UT WOS:000306822300010
ER

PT J
AU Hong, GY
   Pachter, R
AF Hong, Gongyi
   Pachter, Ruth
TI Inhibition of Biocatalysis in [Fe-Fe] Hydrogenase by Oxygen: Molecular
   Dynamics and Density Functional Theory Calculations
SO ACS CHEMICAL BIOLOGY
LA English
DT Article
ID IRON-SULFUR CLUSTERS; ACTIVE-SITE; H-CLUSTER; ACTIVATING ENZYMES; O-2;
   APPROXIMATION; SIMULATION; BINDING; ENERGY; LIGAND
AB Designing O-2-tolerant hydrogenases is a major challenge in applying [Fe-Fe]H(2)ases for H-2 production. The inhibition involves transport of oxygen through the enzyme to the H-cluster, followed by binding and subsequent deactivation of the active site. To explore the nature of the oxygen diffusion channel for the hydrogenases from Desulfovibrio desulfuricans (Dd) and Clostridium pasteurianum (Cp), empirical molecular dynamics simulations were performed. The dynamic nature of the oxygen pathways in Dd and Cp was elucidated, and insight is provided, in part, into the experimental observation on the difference of oxygen inhibition in Dd and the hydrogenase from Clostridium acetobutylicum (Ca, assumed homologous to Cp). Further, to gain an understanding of the mechanism of oxygen inhibition of the [Fe-Fe]H(2)ase, density functional theory calculations of model compounds composed of the H-cluster and proximate amino acids are reported. Confirmation of the experimentally based suppositions on inactivation by oxygen at the [2Fe](H) domain is provided, validating the model compounds used and oxidation state assumptions, further explaining the mode of damage. This unified approach provides insight into oxygen diffusion in the enzyme, followed by deactivation at the H-cluster.
C1 [Hong, Gongyi; Pachter, Ruth] USAF, Res Lab, Wright Patterson AFB, OH 45433 USA.
   [Hong, Gongyi] Gen Dynam Informat Technol Inc, Dayton, OH 45433 USA.
RP Pachter, R (reprint author), USAF, Res Lab, Wright Patterson AFB, OH 45433 USA.
EM Ruth.Pachter@wpafb.af.mil
FU Air Force Office of Scientific Research
FX We gratefully acknowledge support from the Air Force Office of
   Scientific Research and helpful assistance from the AFRL DSRC for High
   Performance Computing.
NR 35
TC 14
Z9 14
U1 1
U2 28
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1554-8929
J9 ACS CHEM BIOL
JI ACS Chem. Biol.
PD JUL
PY 2012
VL 7
IS 7
BP 1268
EP 1275
DI 10.1021/cb3001149
PG 8
WC Biochemistry & Molecular Biology
SC Biochemistry & Molecular Biology
GA 975VU
UT WOS:000306540400017
PM 22563793
ER

PT J
AU Cummings, RM
AF Cummings, Russell M.
TI Untitled
SO AEROSPACE SCIENCE AND TECHNOLOGY
LA English
DT Editorial Material
C1 USAF Acad, Colorado Springs, CO 80840 USA.
RP Cummings, RM (reprint author), USAF Acad, Colorado Springs, CO 80840 USA.
EM Russ.Cummings@usafa.edu
NR 0
TC 0
Z9 0
U1 0
U2 0
PU ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER
PI PARIS
PA 23 RUE LINOIS, 75724 PARIS, FRANCE
SN 1270-9638
J9 AEROSP SCI TECHNOL
JI Aerosp. Sci. Technol.
PD JUL-AUG
PY 2012
VL 20
IS 1
SI SI
BP 1
EP 1
DI 10.1016/j.ast.2012.06.001
PG 1
WC Engineering, Aerospace
SC Engineering
GA 978TX
UT WOS:000306769800001
ER

PT J
AU Schutte, A
   Cummings, RM
   Loeser, T
AF Schuette, Andreas
   Cummings, Russell M.
   Loeser, Thomas
TI An integrated computational/experimental approach to X-31 stability &
   control estimation
SO AEROSPACE SCIENCE AND TECHNOLOGY
LA English
DT Article
DE X-31; Vortical flow; Experiment; Wind tunnel; RTO; AVT; CFD; Stability
   and control; DLR; USAFA; DNW; NWB
ID NUMERICAL-SIMULATION; F-16XL AIRCRAFT; WIND-TUNNEL; AERODYNAMICS;
   PREDICTION; PROJECT; FLOWS; STALL; GRIDS
AB A comprehensive research program designed to investigate the ability of computational methods to predict stability and control characteristics of realistic flight vehicles has been undertaken. The approach to simulating static and dynamic stability characteristics for the X-31 configuration was performed by NATO RTO Task Group AVT-161, which resulted in an integrated computational and experimental study. The stability characteristics of the vehicle were evaluated via a highly integrated approach, where CFD and experimental results were used in a parallel and collaborative fashion. The results show that computational methods have made great strides in predicting static and dynamic stability characteristics, but several key issues need to be resolved before efficient, affordable, and reliable predictions are available. (c) 2011 Elsevier Masson SAS. All rights reserved.
C1 [Schuette, Andreas] DLR, German Aerosp Ctr, Inst Aerodynam & Flow Technol, Braunschweig, Germany.
   [Cummings, Russell M.] USAF Acad, Dept Aeronaut, Colorado Springs, CO USA.
   [Loeser, Thomas] DNW NOP, NWB, Braunschweig, Germany.
RP Schutte, A (reprint author), DLR, German Aerosp Ctr, Inst Aerodynam & Flow Technol, Braunschweig, Germany.
EM andreas.schuette@dlr.de
NR 71
TC 4
Z9 4
U1 0
U2 6
PU ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER
PI PARIS
PA 23 RUE LINOIS, 75724 PARIS, FRANCE
SN 1270-9638
J9 AEROSP SCI TECHNOL
JI Aerosp. Sci. Technol.
PD JUL-AUG
PY 2012
VL 20
IS 1
SI SI
BP 2
EP 11
DI 10.1016/j.ast.2011.10.010
PG 10
WC Engineering, Aerospace
SC Engineering
GA 978TX
UT WOS:000306769800002
ER

PT J
AU Schutte, A
   Boelens, OJ
   Oehlke, M
   Jirasek, A
   Loeser, T
AF Schuette, Andreas
   Boelens, Okko J.
   Oehlke, Martin
   Jirasek, Adam
   Loeser, Thomas
TI Prediction of the flow around the X-31 aircraft using three different
   CFD methods
SO AEROSPACE SCIENCE AND TECHNOLOGY
LA English
DT Article
DE X-31; CFD; RTO; AVT; Stability and control; Experiment; MPM; DLR-TAU;
   ENSOLV; Cobalt; DNW-NWB; Vortex; Vortical flow
ID F-16XL AIRCRAFT; SIMULATION; AERODYNAMICS; GRIDS
AB Recent results from numerical investigations regarding the complex steady state and unsteady flow physics of the X-31 configuration within the low speed flow regime are presented. These investigations are established as a contribution to the RTO/AVT-161 Task Group focusing on "Assessment of Stability and Control Prediction Methods for NATO Air and Sea Vehicles". The status of the ability to predict the steady state and unsteady flow comparing three different CFD methods will be presented. The validation process is based on essential experimental steady and unsteady tests. These tests are done with the focus of integrating CFD and Experiment by detailed determination of wind tunnel test boundary conditions, influences on specific components of the wind tunnel model and support as well as on data acquisition process. The aim is to evaluate the status of the ability for giving a contribution to S&C analyses for configurations with non-linear aerodynamic behavior. (c) 2011 Elsevier Masson SAS. All rights reserved.
C1 [Schuette, Andreas] German Aerosp Ctr, DLR, Inst Aerodynam & Flow Technol, D-38108 Braunschweig, Germany.
   [Boelens, Okko J.] Natl Aerosp Lab NLR, Dept Flight Phys & Loads, Aerosp Vehicles Div, NL-1006 BM Amsterdam, Netherlands.
   [Oehlke, Martin] Univ Appl Sci, HAW Hamburg, Hamburg, Germany.
   [Jirasek, Adam] USAF Acad, Dept Aeronaut, Colorado Springs, CO USA.
   [Loeser, Thomas] Low Speed Wind Tunnel Braunschweig NWB, German Dutch Wind Tunnels DNW, D-38108 Braunschweig, Germany.
RP Schutte, A (reprint author), German Aerosp Ctr, DLR, Inst Aerodynam & Flow Technol, Lilienthalpl 7, D-38108 Braunschweig, Germany.
EM andreas.schuette@dlr.de; okko.boelens@anlr.nl
FU Kennis voor Beleid en Toepassing; Air Force Office of Scientific
   Research, AFOSR
FX Part of this work has been conducted under NLR's programmatic research
   funding "Kennis voor Beleid en Toepassing".; The USAFA participation was
   financed by the Air Force Office of Scientific Research, AFOSR.
NR 43
TC 3
Z9 3
U1 0
U2 7
PU ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER
PI PARIS
PA 23 RUE LINOIS, 75724 PARIS, FRANCE
SN 1270-9638
J9 AEROSP SCI TECHNOL
JI Aerosp. Sci. Technol.
PD JUL-AUG
PY 2012
VL 20
IS 1
SI SI
BP 21
EP 37
DI 10.1016/j.ast.2011.07.014
PG 17
WC Engineering, Aerospace
SC Engineering
GA 978TX
UT WOS:000306769800004
ER

PT J
AU Jirasek, A
   Cummings, RM
AF Jirasek, Adam
   Cummings, Russell M.
TI Reduced order modeling of X-31 wind tunnel model aerodynamic loads
SO AEROSPACE SCIENCE AND TECHNOLOGY
LA English
DT Article
DE Computational fluid dynamics; Reduced order modeling; Stability and
   control
ID DETACHED-EDDY SIMULATION; FLOWS
AB With recent advances in computational techniques, turbulent Navier-Stokes solvers are now capable of capturing the unsteady nonlinear aerodynamic behavior that leads to various static and dynamic instabilities of full aircraft. As such, the focus of stability and control (S&C) research has been to effectively incorporate Computational Fluid Dynamics (CFD) into the model development process using dynamic CFD solutions of complete aircraft configurations. This has lead to an innovative approach for modeling aircraft stability and control characteristics: (a) CFD simulations are performed using computational training maneuvers designed to excite the relevant flow physics encountered during actual missions, (b) a mathematical Reduced Order Model (ROM) is built of the aircraft response using system identification methods, (c) the model is validated by comparing CFD simulations against model predictions, and (d) predictions of all fight test points are made using the model to determine the expected behavior of the aircraft. This process would identify unexpected S&C issues early in the design process. This article describes the application of this innovative approach to a problem of the System Identification (SID) of a high performance fighter-type configuration, the X-31. The training maneuver used to produce the training data has been tested in the DNW low speed wind tunnel which enables directly comparing the predictive capabilities of the CFD and wind tunnel SID modeling. Published by Elsevier Masson SAS.
C1 [Cummings, Russell M.] USAF Acad, NRC, Dept Aeronaut, Colorado Springs, CO 80840 USA.
RP Cummings, RM (reprint author), USAF Acad, NRC, Dept Aeronaut, Colorado Springs, CO 80840 USA.
EM russ.cummings@usafa.edu
FU Modeling and Simulation Research Center (M&SRC) of the US Air Force
   Academy; National Research Council (NRC); SEEK Eagle Office
FX The authors would like to thank the Air Force Office of Scientific
   Research, AFOSR, for their generous support throughout this project. The
   financial support of the Modeling and Simulation Research Center (M&SRC)
   of the US Air Force Academy, the financial support of the National
   Research Council (NRC) and the financial support of the SEEK Eagle
   Office is greatly acknowledged. The Arctic Region Supercomputing Center
   is acknowledged for providing access to high performance computing
   facilities. The authors want to thank Andreas Schutte of DLR and Thomas
   Loser of DNW-NWB for providing details of the X-31 wind tunnel test and
   the experimental data used in this work. We would also like to thank
   David McDaniel of the University of Alabama at Birmingham for his help
   with SIDPAC.
NR 37
TC 1
Z9 1
U1 0
U2 5
PU ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER
PI PARIS
PA 23 RUE LINOIS, 75724 PARIS, FRANCE
SN 1270-9638
J9 AEROSP SCI TECHNOL
JI Aerosp. Sci. Technol.
PD JUL-AUG
PY 2012
VL 20
IS 1
SI SI
BP 52
EP 60
DI 10.1016/j.ast.2011.10.014
PG 9
WC Engineering, Aerospace
SC Engineering
GA 978TX
UT WOS:000306769800006
ER

PT J
AU Mullins, OC
   Sabbah, H
   Eyssautier, J
   Pomerantz, AE
   Barre, L
   Andrews, AB
   Ruiz-Morales, Y
   Mostowfi, F
   McFarlane, R
   Goual, L
   Lepkowicz, R
   Cooper, T
   Orbulescu, J
   Leblanc, RM
   Edwards, J
   Zare, RN
AF Mullins, Oliver C.
   Sabbah, Hassan
   Eyssautier, Joelle
   Pomerantz, Andrew E.
   Barre, Loic
   Andrews, A. Ballard
   Ruiz-Morales, Yosadara
   Mostowfi, Farshid
   McFarlane, Richard
   Goual, Lamia
   Lepkowicz, Richard
   Cooper, Thomas
   Orbulescu, Jhony
   Leblanc, Roger M.
   Edwards, John
   Zare, Richard N.
TI Advances in Asphaltene Science and the Yen-Mullins Model
SO ENERGY & FUELS
LA English
DT Article; Proceedings Paper
CT 1st International Conference on Upstream Engineering and Flow Assurance
   (ICUEFA) at the Spring Meeting of the
   American-Institute-of-Chemical-Engineers (AIChE)
CY APR 01-05, 2012
CL Houston, TX
SP Amer Inst Chem Engineers
ID CRITICAL NANOAGGREGATE CONCENTRATION; MOLECULAR-WEIGHT DISTRIBUTIONS;
   LASER MASS-SPECTROMETRY; X-RAY-DIFFRACTION; CRUDE OILS; PETROLEUM
   ASPHALTENES; CORRELATION SPECTROSCOPY; ELECTRICAL-CONDUCTIVITY;
   AROMATIC-HYDROCARBONS; ELECTRONIC ABSORPTION
AB The Yen-Mullins model, also known as the modified Yen model, specifies the predominant molecular and colloidal structure of asphaltenes in crude oils and laboratory solvents and consists of the following: The most probable asphaltene molecular weight is similar to 750 g/mol, with the island molecular architecture dominant. At sufficient concentration, asphaltene molecules form nanoaggregates with an aggregation number less than 10. At higher concentrations, nanoaggregates form clusters again with small aggregation numbers. The Yen-Mullins model is consistent with numerous molecular and colloidal studies employing a broad array of methodologies. Moreover, the Yen-Mullins model provides a foundation for the development of the first asphaltene equation of state for predicting asphaltene gradients in oil reservoirs, the Flory-Huggins-Zuo equation of state (FHZ EoS). In turn, the FHZ EoS has proven applicability in oil reservoirs containing condensates, black oils, and heavy oils. While the development of the Yen-Mullins model was founded on a very large number of studies, it nevertheless remains essential to validate consistency of this model with important new data streams in asphaltene science. In this paper, we review recent advances in asphaltene science that address all critical aspects of the Yen-Mullins model, especially molecular architecture and characteristics of asphaltene nanoaggregates and clusters. Important new studies are shown to be consistent with the Yen-Mullins model. Wide ranging studies with direct interrogation of the Yen-Mullins model include detailed molecular decomposition analyses, optical measurements coupled with molecular orbital calculations, nuclear magnetic resonance (NMR) spectroscopy, centrifugation, direct-current (DC) conductivity, interfacial studies, small-angle neutron scattering (SANS), and small-angle X-ray scattering (SAXS), as well as oilfield studies. In all cases, the Yen-Mullins model is proven to be at least consistent if not valid. In addition, several studies previously viewed as potentially inconsistent with the Yen-Mullins model are now largely resolved. Moreover, oilfield studies using the Yen-Mullins model in the FHZ EoS are greatly improving the understanding of many reservoir concerns, such as reservoir connectivity, heavy oil gradients, tar mat formation, and disequilibrium. The simple yet powerful advances codified in the Yen-Mullins model especially with the FHZ EoS provide a framework for future studies in asphaltene science, petroleum science, and reservoir studies.
C1 [Mullins, Oliver C.; Pomerantz, Andrew E.; Andrews, A. Ballard] Schlumberger Doll Res Ctr, Cambridge, MA 02139 USA.
   [Sabbah, Hassan] Univ Toulouse, UPS OMP, IRAP, F-31028 Toulouse 4, France.
   [Sabbah, Hassan] CNRS, IRAP, F-31028 Toulouse 4, France.
   [Sabbah, Hassan; Zare, Richard N.] Stanford Univ, Dept Chem, Stanford, CA 94305 USA.
   [Eyssautier, Joelle; Barre, Loic] IFP Energies Nouvelles, F-92852 Rueil Malmaison, France.
   [Ruiz-Morales, Yosadara] Inst Mexicano Petr, Programa Ingn Mol, Mexico City 07730, DF, Mexico.
   [Mostowfi, Farshid] DBR Technol Ctr, Edmonton, AB T6N 1M9, Canada.
   [McFarlane, Richard] Alberta Innovates Technol Futures, Edmonton, AB T6N 1E4, Canada.
   [Goual, Lamia] Univ Wyoming, Dept Chem & Petr Engn, Laramie, WY 82071 USA.
   [Lepkowicz, Richard] Rose Hulman Inst Technol, Dept Phys & Opt Engn, Terre Haute, IN 47803 USA.
   [Cooper, Thomas] USAF, Mat & Mfg Directorate, Res Lab, Wright Patterson AFB, OH 45433 USA.
   [Orbulescu, Jhony; Leblanc, Roger M.] Univ Miami, Cox Sci Ctr, Dept Chem, Coral Gables, FL 33146 USA.
   [Edwards, John] Proc NMR Associates, Danbury, CT 06810 USA.
RP Mullins, OC (reprint author), Schlumberger Doll Res Ctr, 1 Hampshire St, Cambridge, MA 02139 USA.
EM mullins1@slb.com
RI Sabbah, Hassan/E-6202-2013; Orbulescu, Jhony/D-7829-2012; Physico
   chimie, Direction Physico /C-1380-2013; IFPEN, Publications/A-8028-2008
OI Orbulescu, Jhony/0000-0001-9408-9787; 
NR 90
TC 195
Z9 198
U1 11
U2 194
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0887-0624
EI 1520-5029
J9 ENERG FUEL
JI Energy Fuels
PD JUL
PY 2012
VL 26
IS 7
BP 3986
EP 4003
DI 10.1021/ef300185p
PG 18
WC Energy & Fuels; Engineering, Chemical
SC Energy & Fuels; Engineering
GA 975IE
UT WOS:000306503100004
ER

PT J
AU Jackson, JA
   Moses, RL
AF Jackson, Julie A.
   Moses, Randolph L.
TI Synthetic Aperture Radar 3D Feature Extraction for Arbitrary Flight
   Paths
SO IEEE TRANSACTIONS ON AEROSPACE AND ELECTRONIC SYSTEMS
LA English
DT Article
ID SAR
AB We propose an algorithm for extracting multiple geometric scattering features from synthetic aperture radar (SAR) phase history collected over arbitrary, 3D monostatic or bistatic apertures. The algorithm input is complex-valued phase history; the output is a list of features and corresponding parameter estimates. We fit to the data parametric models for six canonical features. The feature extraction problem includes model order selection, shape classification, and parameter estimation. Examples include densely-sampled and sparse apertures for monostatic and bistatic scenarios.
C1 [Moses, Randolph L.] Ohio State Univ, Dept Elect Engn, Columbus, OH 43210 USA.
RP Jackson, JA (reprint author), USAF, Inst Technol, Dept Elect & Comp Engn, AFIT ENG, 2950 Hobson Way, Wright Patterson AFB, OH 45433 USA.
EM julie.jackson@afit.edu
FU OSU; Dayton Area Graduate Studies Institute
FX This work was performed while J. Jackson was a Graduate fellow at The
   Ohio State University (OSU), with funding from OSU and the Dayton Area
   Graduate Studies Institute.
NR 48
TC 12
Z9 12
U1 0
U2 8
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 0018-9251
J9 IEEE T AERO ELEC SYS
JI IEEE Trans. Aerosp. Electron. Syst.
PD JUL
PY 2012
VL 48
IS 3
BP 2065
EP 2084
DI 10.1109/TAES.2012.6237579
PG 20
WC Engineering, Aerospace; Engineering, Electrical & Electronic;
   Telecommunications
SC Engineering; Telecommunications
GA 975ND
UT WOS:000306517100015
ER

PT J
AU Wang, Y
   Hussein, II
   Brown, DR
   Erwin, RS
AF Wang, Y.
   Hussein, I. I.
   Brown, D. R., III
   Erwin, R. S.
TI Cost-Aware Bayesian Sequential Decision-Making for Search and
   Classification
SO IEEE TRANSACTIONS ON AEROSPACE AND ELECTRONIC SYSTEMS
LA English
DT Article
ID COVERAGE CONTROL; SENSOR NETWORKS; TRACKING; TARGETS
AB A cost-aware Bayesian sequential decision-making strategy for domain search and object classification using a limited-range sensor is presented. On one hand, it is risky to allocate all available sensing resources at a single location while ignoring other regions. On the other hand, the sensor may miss-detect or miss-classify a critical object with insufficient observations. Therefore, we develop a decision-making strategy that balances the tolerable risks and the desired decision precision under limited resources.
C1 [Wang, Y.] Clemson Univ, Dept Mech Engn, Clemson, SC 29634 USA.
   [Hussein, I. I.] Worcester Polytech Inst, Dept Mech Engn, Worcester, MA 01609 USA.
   [Brown, D. R., III] Worcester Polytech Inst, Dept Elect & Comp Engn, Worcester, MA 01609 USA.
   [Erwin, R. S.] USAF, Res Lab, Space Vehicles Directorate, AFRL RV, Kirtland AFB, NM 87117 USA.
RP Wang, Y (reprint author), Clemson Univ, Dept Mech Engn, Fluor Daniel Bldg, Clemson, SC 29634 USA.
EM yue6@clemson.edu
NR 40
TC 2
Z9 2
U1 0
U2 5
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 0018-9251
EI 1557-9603
J9 IEEE T AERO ELEC SYS
JI IEEE Trans. Aerosp. Electron. Syst.
PD JUL
PY 2012
VL 48
IS 3
BP 2566
EP 2581
DI 10.1109/TAES.2012.6237609
PG 16
WC Engineering, Aerospace; Engineering, Electrical & Electronic;
   Telecommunications
SC Engineering; Telecommunications
GA 975ND
UT WOS:000306517100045
ER

PT J
AU Yang, C
   Kaplan, L
   Blasch, E
AF Yang, Chun
   Kaplan, Lance
   Blasch, Erik
TI Performance Measures of Covariance and Information Matrices in Resource
   Management for Target State Estimation
SO IEEE TRANSACTIONS ON AEROSPACE AND ELECTRONIC SYSTEMS
LA English
DT Article
ID DISTRIBUTED SENSOR NETWORK; WAVE-FORM SELECTION; NODE SELECTION;
   TRACKING; LOCALIZATION; FUSION; COORDINATION; PLACEMENT; SYSTEMS
AB In target tracking, sensor resource management (SRM) assigns to each target a best combination of sensors, which requires performance analysis of track filter updates. Two popular implementations of track filters are the Kalman filter (or covariance filter) and the information filter. SRM with Kalman filters attempts to minimize the estimation error covariance matrix-based scalar performance measures, whereas SRM with information filters aims to maximize the information matrix-based counterpart. In this paper, we investigate issues related to scalar performance measures and, in particular, compare the use of trace, determinant, and eigenvalues of the covariance matrix or information matrix as scalar performance measures. The study demonstrates which matrix measures are appropriate for resource management applications. Furthermore, the study shows when the matrix measures lead to equivalent goals. While this analysis is agnostic to the type of measurement, the paper demonstrates how to accommodate bearing and range measurements. Overall, the analysis provides insight about how sensor measurements best reduce uncertainty so that we can properly exploit performance measures to satisfy requirements of practical tracking and SRM applications.
C1 [Yang, Chun] Sigtem Technol Inc, San Mateo, CA 94402 USA.
   [Kaplan, Lance] USA, Res Lab, Adelphi, MD 20783 USA.
   [Blasch, Erik] USAF, Res Lab, Wright Patterson AFB, OH 45433 USA.
RP Yang, C (reprint author), Sigtem Technol Inc, San Mateo, CA 94402 USA.
EM chunynag@sigtem.com
FU Air Force Research Lab [FA8650-08-C-1407]
FX Research supported in part by Air Force Research Lab under Contract No.
   FA8650-08-C-1407, which is greatly appreciated. We also thank the editor
   and four anonymous reviewers whose suggestions and comments have
   improved the focus, quality, and presentation of the paper.
NR 39
TC 61
Z9 62
U1 2
U2 8
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 0018-9251
J9 IEEE T AERO ELEC SYS
JI IEEE Trans. Aerosp. Electron. Syst.
PD JUL
PY 2012
VL 48
IS 3
BP 2594
EP 2613
DI 10.1109/TAES.2012.6237611
PG 20
WC Engineering, Aerospace; Engineering, Electrical & Electronic;
   Telecommunications
SC Engineering; Telecommunications
GA 975ND
UT WOS:000306517100047
ER

PT J
AU DeMars, KJ
   Jah, MK
   Schumacher, PW
AF DeMars, Kyle J.
   Jah, Moriba K.
   Schumacher, Paul W., Jr.
TI Initial Orbit Determination using Short-Arc Angle and Angle Rate Data
SO IEEE TRANSACTIONS ON AEROSPACE AND ELECTRONIC SYSTEMS
LA English
DT Article
ID ADMISSIBLE REGIONS
AB The population of space objects (SOs) is tracked with sparse resources and thus tracking data are only collected on these objects for a relatively small fraction of their orbit revolution (i.e., a short arc). This contributes to commonly mistagged or uncorrelated SOs and their associated trajectory uncertainties (covariances) to be less physically meaningful. The case of simply updating a catalogued SO is not treated here, but rather, the problem of reducing a set of collected short-arc data on an arbitrary deep space object without a priori information, and from the observations alone, determining its orbit to an acceptable level of accuracy. Fundamentally, this is a problem of data association and track correlation. The work presented here takes the concept of admissible regions and attributable vectors along with a multiple hypothesis filtering approach to determine how well these SO orbits can be recovered for short-arc data in near realtime and autonomously. While the methods presented here are explored with synthetic data, the basis for the simulations resides in actual data that has yet to be reduced, but whose characteristics are replicated as well as possible to yield results that can be expected using actual data.
C1 [DeMars, Kyle J.; Jah, Moriba K.] USAF, Res Lab, Space Vehicles Directorate, Albuquerque, NM 87117 USA.
   [Schumacher, Paul W., Jr.] USAF, Res Lab, High Performance Comp Software Applicat Inst Spac, Kihei, HI 96753 USA.
RP DeMars, KJ (reprint author), USAF, Res Lab, Space Vehicles Directorate, 3550 Aberdeen Ave SE, Albuquerque, NM 87117 USA.
EM demars.kyle@ieee.org
OI Jah, Moriba/0000-0003-1109-0374
NR 18
TC 19
Z9 20
U1 2
U2 6
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 0018-9251
J9 IEEE T AERO ELEC SYS
JI IEEE Trans. Aerosp. Electron. Syst.
PD JUL
PY 2012
VL 48
IS 3
BP 2628
EP 2637
DI 10.1109/TAES.2012.6237613
PG 10
WC Engineering, Aerospace; Engineering, Electrical & Electronic;
   Telecommunications
SC Engineering; Telecommunications
GA 975ND
UT WOS:000306517100049
ER

PT J
AU Trask, N
   Schmidt, DP
   Lightfoot, M
   Danczyk, S
AF Trask, Nathaniel
   Schmidt, David P.
   Lightfoot, Malissa
   Danczyk, Stephen
TI Compressible Modeling of the Internal Flow in a Gas-Centered
   Swirl-Coaxial Fuel Injector
SO JOURNAL OF PROPULSION AND POWER
LA English
DT Article
ID EULERIAN MODEL; CONFINED FLOW; LIQUID JET; ATOMIZATION; DENSITY
AB Predicting the liquid film dynamics inside the injector cup of gas-centered swirl-coaxial fuel injectors requires a general two-phase approach that is appropriate for all liquid-volume fractions, high Mach and Weber numbers, and complex geometries. A Eulerian two-phase model is implemented to represent the liquid and gas interactions in the injector as well as the atomization processes occurring at the rough interface. Previous work using an incompressible formulation encountered difficulty in matching film profiles at large mass flow rates. The current work is an enhanced approach that includes compressibility effects. The improvement gained by implementing a compressible formulation is attributed to a sudden expansion occurring following the injector lip. Two-dimensional results are compared to high-speed photographs of the liquid film within the injector cup. Applications of closures for the turbulent liquid flux commonly used in the literature are presented and are shown to substantially overpredict the atomization rate. By limiting the rate at which entrainment occurs via the Schmidt number, the film profile is accurately predicted over a wide range of momentum flux ratios, highlighting the stabilizing effect the swirl has upon the atomization process. The applicability of this modeling approach and an assessment of the necessity for investigating Reynolds stress closures in future work are assessed.
C1 [Trask, Nathaniel; Schmidt, David P.] Univ Massachusetts, Dept Mech Engn, Amherst, MA 01002 USA.
   [Lightfoot, Malissa; Danczyk, Stephen] USAF, Res Lab, RZSA, Edwards AFB, CA 93524 USA.
RP Trask, N (reprint author), Univ Massachusetts, Dept Mech Engn, 160 Governors Dr, Amherst, MA 01002 USA.
FU U.S. Air Force [FA9550-08-C-0030]; U.S. Army Research Office
   [W911NF-08-1-0171]
FX The authors acknowledge funding under U.S. Air Force contract
   FA9550-08-C-0030 and U.S. Army Research Office grant number
   W911NF-08-1-0171. We acknowledge the suggestion of Doug Talley of the
   U.S. Air Force Research Laboratory, Edwards Air Force Base, that the
   gas-centered swirl-coaxial injector could be operating in a
   fundamentally unstable regime due to the expansion of the gas.
NR 27
TC 8
Z9 8
U1 1
U2 16
PU AMER INST AERONAUTICS  ASTRONAUTICS
PI RESTON
PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091-4344 USA
SN 0748-4658
J9 J PROPUL POWER
JI J. Propul. Power
PD JUL-AUG
PY 2012
VL 28
IS 4
BP 685
EP 693
DI 10.2514/1.B34102
PG 9
WC Engineering, Aerospace
SC Engineering
GA 975TH
UT WOS:000306533900002
ER

PT J
AU Szabo, J
   Pote, B
   Paintal, S
   Robin, M
   Hillier, A
   Branam, RD
   Huffman, RE
AF Szabo, James
   Pote, Bruce
   Paintal, Surjeet
   Robin, Mike
   Hillier, Adam
   Branam, Richard D.
   Huffman, Richard E.
TI Performance Evaluation of an Iodine-Vapor Hall Thruster
SO JOURNAL OF PROPULSION AND POWER
LA English
DT Article; Proceedings Paper
CT 47th AIAA/ASME/SAE/ASEE Joint Propulsion Conference
CY JUL 28-AUG 03, 2011
CL San Diego, CA
SP AIAA, ASME, SAE, ASEE
ID ELECTRON-IMPACT; CROSS-SECTIONS; IONIZATION; PLASMA; DRIFT
AB The performance of a nominal 200 W Hall effect thruster fueled by iodine vapor was evaluated. The system included a laboratory propellant feed system, a flight-model Hall thruster, and breadboard power processing unit. Operation of the Hall thruster with iodine vapor was stable on both short and long time scales, enabling measurements of thruster performance across a broad range of operation conditions. Performance was found to be comparable with xenon. At 200 W, thrust is 13 mN, anode specific impulse is 1500 s, and anode efficiency is 48%. Plume-current measurements indicate a profile typical of xenon Hall thrusters, while E x B probe measurements indicate the presence of ionic dimers.
C1 [Szabo, James; Pote, Bruce; Paintal, Surjeet; Robin, Mike] Busek Co Inc, Natick, MA 01760 USA.
   [Hillier, Adam; Branam, Richard D.; Huffman, Richard E.] USAF, Inst Technol, Dept Aeronaut & Astronaut, Wright Patterson AFB, OH 45433 USA.
RP Szabo, J (reprint author), Busek Co Inc, Hall Thrusters, Natick, MA 01760 USA.
NR 35
TC 10
Z9 10
U1 4
U2 7
PU AMER INST AERONAUT ASTRONAUT
PI RESTON
PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091-4344 USA
SN 0748-4658
J9 J PROPUL POWER
JI J. Propul. Power
PD JUL-AUG
PY 2012
VL 28
IS 4
BP 848
EP 857
DI 10.2514/1.B34291
PG 10
WC Engineering, Aerospace
SC Engineering
GA 975TH
UT WOS:000306533900018
ER

PT J
AU Rankin, BA
   Blunck, DL
   Monfort, J
   Kiel, BV
   Gore, JP
AF Rankin, Brent A.
   Blunck, David L.
   Monfort, Jeff
   Kiel, Barry V.
   Gore, Jay P.
TI Infrared Radiation and Acoustic Characteristics of Combustion
   Instabilities in Turbulent Premixed Flames
SO JOURNAL OF PROPULSION AND POWER
LA English
DT Article; Proceedings Paper
CT 50th AIAA Aerospace Sciences Meeting and Exhibit including the New
   Horizons Forum and Aerospace Exposition
CY JAN 09-13, 2012
CL Nashville, TN
SP AIAA, US AF Off Sci Res
ID BLOWOFF DYNAMICS
C1 [Rankin, Brent A.; Gore, Jay P.] Purdue Univ, Sch Mech Engn, W Lafayette, IN 47907 USA.
   [Blunck, David L.; Kiel, Barry V.] USAF, Res Lab, Prop Directorate, Combust Branch, Wright Patterson AFB, OH 45433 USA.
   [Monfort, Jeff] Univ Dayton, Sch Mech Engn, Dayton, OH 45469 USA.
RP Rankin, BA (reprint author), Purdue Univ, Sch Mech Engn, 500 Allison Rd, W Lafayette, IN 47907 USA.
RI Rankin, Brent/A-1598-2017
OI Rankin, Brent/0000-0002-5967-9527
NR 11
TC 1
Z9 1
U1 0
U2 4
PU AMER INST AERONAUTICS  ASTRONAUTICS
PI RESTON
PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091-4344 USA
SN 0748-4658
J9 J PROPUL POWER
JI J. Propul. Power
PD JUL-AUG
PY 2012
VL 28
IS 4
BP 862
EP 865
DI 10.2514/1.B34374
PG 4
WC Engineering, Aerospace
SC Engineering
GA 975TH
UT WOS:000306533900020
ER

PT J
AU Polanka, MD
   Zelina, J
   Anderson, WS
   Sekar, B
   Evans, DS
   Lin, CX
   Stouffer, SD
   King, P
AF Polanka, Marc D.
   Zelina, Joseph
   Anderson, Wesly S.
   Sekar, Balu
   Evans, Dave S.
   Lin, Cheng-Xian
   Stouffer, Scott D.
   King, Paul
TI Heat Release in Turbine Cooling I: Experimental and Computational
   Comparison of Three Geometries (vol 27, pg 276, 2011)
SO JOURNAL OF PROPULSION AND POWER
LA English
DT Correction
C1 [Polanka, Marc D.; Zelina, Joseph; Anderson, Wesly S.; Sekar, Balu] USAF, Res Lab, Wright Patterson AFB, OH 45433 USA.
   [Evans, Dave S.; King, Paul] USAF, Inst Technol, Wright Patterson AFB, OH 45433 USA.
   [Lin, Cheng-Xian] Univ Tennessee, Knoxville, TN 37996 USA.
   [Stouffer, Scott D.] Univ Dayton, Res Inst, Wright Patterson AFB, OH 45433 USA.
RP Polanka, MD (reprint author), USAF, Res Lab, Wright Patterson AFB, OH 45433 USA.
NR 1
TC 0
Z9 0
U1 0
U2 3
PU AMER INST AERONAUT ASTRONAUT
PI RESTON
PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091-4344 USA
SN 0748-4658
J9 J PROPUL POWER
JI J. Propul. Power
PD JUL-AUG
PY 2012
VL 28
IS 4
BP 866
EP 866
DI 10.2514/1.58652
PG 1
WC Engineering, Aerospace
SC Engineering
GA 975TH
UT WOS:000306533900021
ER

PT J
AU Steward, BJ
   Perram, GP
   Gross, KC
AF Steward, Bryan J.
   Perram, Glen P.
   Gross, Kevin C.
TI Modeling midwave infrared muzzle flash spectra from unsuppressed and
   flash-suppressed large caliber munitions
SO INFRARED PHYSICS & TECHNOLOGY
LA English
DT Article
DE Muzzle flash; Spectra; Radiative transfer; Gun; Combustion; Muzzle plume
AB Time-resolved infrared spectra of firings from a 152 mm howitzer were acquired over an 1800-6000 cm(-1) spectral range using a Fourier-transform spectrometer. The instrument collected primarily at 32 cm(-1) spectral and 100 Hz temporal resolutions. Munitions included unsuppressed and chemically flash suppressed propellants. Secondary combustion occurred with unsuppressed propellants resulting in flash emissions lasting similar to 100 ms and dominated by H2O and CO2 spectral structure. Non-combusting plume emissions were one-tenth as intense and approached background levels within 20-40 ms. A low-dimensional phenomenological model was used to reduce the data to temperatures, soot absorbances, and column densities of H2O, CO2, CH4, and CO. The combusting plumes exhibit peak temperatures of similar to 1400 K, areas of greater than 32 m(2), low soot emissivity of similar to 0.04, with nearly all the CO converted to CO2. The non-combusting plumes exhibit lower temperatures of similar to 1000 K, areas of similar to 5 m(2), soot emissivity of greater than 0.38 and CO as the primary product. Maximum fit residual relative to peak intensity are 14% and 8.9% for combusting and non-combusting plumes, respectively. The model was generalized to account for turbulence-induced variations in the muzzle plumes. Distributions of temperature and concentration in 1-2 spatial regions demonstrate a reduction in maximum residuals by 40%. A two-region model of combusting plumes provides a plausible interpretation as a similar to 1550K, optically thick plume core and similar to 2550 K. thin, surface-layer flame-front. Temperature rate of change was used to characterize timescales and energy release for plume emissions. Heat of combustion was estimated to be similar to 5 MJ/kg. Published by Elsevier B.V.
C1 [Steward, Bryan J.; Perram, Glen P.; Gross, Kevin C.] USAF, Inst Technol, Dept Engn Phys, Wright Patterson AFB, OH 45433 USA.
RP Steward, BJ (reprint author), USAF, Inst Technol, Dept Engn Phys, 2950 Hobson Way, Wright Patterson AFB, OH 45433 USA.
EM bryan.steward@us.af.mil; glen.perram@afit.edu; kevin.gross@afit.edu
OI Perram, Glen/0000-0002-4417-3929
NR 24
TC 2
Z9 2
U1 0
U2 7
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 1350-4495
J9 INFRARED PHYS TECHN
JI Infrared Phys. Technol.
PD JUL
PY 2012
VL 55
IS 4
BP 246
EP 255
DI 10.1016/j.infrared.2012.04.005
PG 10
WC Instruments & Instrumentation; Optics; Physics, Applied
SC Instruments & Instrumentation; Optics; Physics
GA 973UB
UT WOS:000306384200003
ER

PT J
AU Lee, J
   Varshney, V
   Roy, AK
   Ferguson, JB
   Farmer, BL
AF Lee, Jonghoon
   Varshney, Vikas
   Roy, Ajit K.
   Ferguson, John B.
   Farmer, Barry L.
TI Thermal Rectification in Three-Dimensional Asymmetric Nanostructure
SO NANO LETTERS
LA English
DT Article
DE Thermal rectifier; phonon density of states; central limit theorem;
   molecular dynamics
ID MOLECULAR-DYNAMICS
AB Previously, thermal rectification has been reported in several low-dimensional shape-asymmetric nanomaterials. In this Letter, we demonstrate that a three-dimensional crystalline material with an asymmetric shape also displays as strong thermal rectification as low-dimensional materials do. The observed rectification is attributed to the stronger temperature dependence of vibration density of states in the narrower region of the asymmetric material, resulting from the small number of atomic degrees of freedom directly interacting with the thermostat. We also demonstrate that the often reported "device shape asymmetry" is not a sufficient condition for thermal rectification. Specifically, the size asymmetry in boundary thermal contacts is equally important toward determining the magnitude of thermal rectification. When the boundary thermal contacts retain the same size asymmetry as the nanomaterial, the overall system displays notable thermal rectification, in accordance with existing literature. However, when the wider region of the asymmetric nanomaterial is partially thermostatted by a smaller sized contact, thermal rectification decreases dramatically and even changes direction.
C1 [Lee, Jonghoon; Varshney, Vikas; Roy, Ajit K.; Ferguson, John B.; Farmer, Barry L.] USAF, Mat & Mfg Directorate, Res Lab, Wright Patterson AFB, OH 45433 USA.
   [Lee, Jonghoon; Varshney, Vikas] Universal Technol Corp, Dayton, OH 45432 USA.
RP Lee, J (reprint author), USAF, Mat & Mfg Directorate, Res Lab, Wright Patterson AFB, OH 45433 USA.
EM jonghoon.lee@wpafb.af.mil
FU U.S. Air Force Office of Scientific Research (AFOSR);  [2302BR7P]
FX The authors are grateful to U.S. Air Force Office of Scientific Research
   (AFOSR) and Dr. Byung-Lip Les Lee for the financial support under Lab
   Task:2302BR7P, Department of Defense Supercomputing Research Center
   (AFRL-DSRC) for computational time to carry out the simulations. and Dr.
   Jennifer Wohlwend for the critical reading of this letter.
NR 14
TC 20
Z9 20
U1 2
U2 35
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 JUL
PY 2012
VL 12
IS 7
BP 3491
EP 3496
DI 10.1021/nl301006y
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 972QY
UT WOS:000306296200023
PM 22716162
ER

PT J
AU Dennis, PB
   Walker, AY
   Dickerson, MB
   Kaplan, DL
   Naik, RR
AF Dennis, Patrick B.
   Walker, Anne Y.
   Dickerson, Matthew B.
   Kaplan, David L.
   Naik, Rajesh R.
TI Stabilization of Organophosphorus Hydrolase by Entrapment in Silk
   Fibroin: Formation of a Robust Enzymatic Material Suitable for Surface
   Coatings
SO BIOMACROMOLECULES
LA English
DT Article
ID PSEUDOMONAS-DIMINUTA; NERVE AGENTS; PHOSPHOTRIESTERASE; DETOXIFICATION;
   DEGRADATION; HYDROLYSIS; EXPRESSION; ENZYMES; GENE; IMMOBILIZATION
AB Organophosphates are some of the most acutely toxic compounds synthesized on an industrial scale, and organophosphorus hydrolase (OPH) has the ability to hydrolyze and inactivate a number of these chemicals. However, OPH activity is vulnerable to harsh environmental conditions that would accompany its practical utility in the field; a limitation that can also be extended to conditions required for incorporation of OPH into useful materials. Here we present evidence that entrapment of OPH in silk fibroin leads to stabilization of OPH activity under a variety of conditions that would otherwise reduce free enzyme activity, such as elevated temperature, UV light exposure and the presence of detergent. Silk fibroin entrapment of OPH also allowed for its dispersal into a polyurethane-based coating that retained organophosphate hydrolysis activity after formulation, application and drying. Together, the data presented here demonstrate the utility of silk fibroin entrapment for the protection of OPH activity under a variety of environmental conditions.
C1 [Dennis, Patrick B.; Walker, Anne Y.; Dickerson, Matthew B.; Naik, Rajesh R.] USAF, Res Lab, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA.
   [Kaplan, David L.] Tufts Univ, Dept Biomed Engn, Medford, MA 02155 USA.
RP Naik, RR (reprint author), USAF, Res Lab, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA.
EM rajesh.naik@wpafb.af.mil
FU DTRA; AFOSR
FX We acknowledge the funding support for this work by DTRA and AFOSR. We
   also thank Katie Martinick for her assistance in deconvoluting the FTIR
   results. Drs. Dennis and Naik are adjunct faculty in the Department of
   Biochemistry and Molecular Biology at Wright State University, Dayton,
   Ohio.
NR 39
TC 17
Z9 17
U1 4
U2 27
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1525-7797
J9 BIOMACROMOLECULES
JI Biomacromolecules
PD JUL
PY 2012
VL 13
IS 7
BP 2037
EP 2045
DI 10.1021/bm300358g
PG 9
WC Biochemistry & Molecular Biology; Chemistry, Organic; Polymer Science
SC Biochemistry & Molecular Biology; Chemistry; Polymer Science
GA 970SD
UT WOS:000306151700007
PM 22651251
ER

PT J
AU Gunderson, SL
   Fultz, GW
   Patton, S
AF Gunderson, Stephen L.
   Fultz, George W.
   Patton, Steven
TI The Use of MIL-PRF-87257 Hydraulic Fluid as a Switching Medium for a
   High-Power Microwave Switch
SO IEEE ELECTRICAL INSULATION MAGAZINE
LA English
DT Article
DE breakdown voltage; dielectric strength; high-pressure microwave switch;
   hydraulic fluid; water content
ID HIGH-VOLTAGE TRANSFORMERS; OIL
C1 [Gunderson, Stephen L.; Fultz, George W.; Patton, Steven] Univ Dayton, Res Inst, USAF, Thermal Mat & Interfaces Branch,Res Lab,Res Inst, Dayton, OH 45469 USA.
RP Gunderson, SL (reprint author), Univ Dayton, Res Inst, USAF, Thermal Mat & Interfaces Branch,Res Lab,Res Inst, Dayton, OH 45469 USA.
NR 12
TC 0
Z9 0
U1 0
U2 1
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 0883-7554
J9 IEEE ELECTR INSUL M
JI IEEE Electr. Insul. Mag.
PD JUL-AUG
PY 2012
VL 28
IS 4
BP 22
EP 28
PG 7
WC Engineering, Electrical & Electronic
SC Engineering
GA 973EB
UT WOS:000306337200005
ER

PT J
AU Iramnaaz, I
   Schellevis, H
   Rejaei, B
   Fitch, R
   Zhuang, Y
AF Iramnaaz, I.
   Schellevis, Hugo
   Rejaei, Behzad
   Fitch, Robert
   Zhuang, Yan
TI High-Quality Integrated Inductors Based on Multilayered Meta-Conductors
SO IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS
LA English
DT Article
DE Ferromagnetic resonance (FMR); inductor; magnetic thin film; quality
   factor; radio frequency (RF)
ID SPIRAL INDUCTORS; RF ICS; SILICON; DESIGN; FILMS; SUPPRESSION; SI
AB We demonstrate high-quality integrated inductors built from a multilayer of alternating copper and ferromagnetic films. The multilayer acts as a meta-conductor whose effective permeability becomes nearly zero at its ferromagnetic anti-resonance frequency. This leads to a suppression of the skin effect and a significant increase in the quality factor of the device. Experiments show an up to 86% increase in quality factor compared to conventional copper-based spiral inductors at high frequencies.
C1 [Iramnaaz, I.; Zhuang, Yan] Wright State Univ, Dept Elect Engn, Dayton, OH 45435 USA.
   [Schellevis, Hugo] Delft Univ Technol, Dept Elect Engn, Delft, Netherlands.
   [Rejaei, Behzad] Sharif Univ Technol, Dept Elect Engn, Tehran, Iran.
   [Fitch, Robert] USAF, Sensors Directorate, Res Lab, Wright Patterson AFB, OH 45433 USA.
RP Iramnaaz, I (reprint author), Wright State Univ, Dept Elect Engn, Dayton, OH 45435 USA.
EM iramnaaz.2@wright.edu; H.Schellevis@tudelft.nl; rejaei@sharif.ir;
   robert.fitch@wpafb.af.mil; yan.zhuang@wright.edu
FU U.S. Department of Defense [AFOSR-DURIP-FA9550-09-1-0460]
FX Manuscript received February 24, 2012; revised May 14, 2012; accepted
   May 20, 2012. Date of publication June 14, 2012; date of current version
   June 30, 2012. This work was supported in part by the U.S. Department of
   Defense under Grant AFOSR-DURIP-FA9550-09-1-0460.
NR 20
TC 3
Z9 3
U1 0
U2 10
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 1531-1309
J9 IEEE MICROW WIREL CO
JI IEEE Microw. Wirel. Compon. Lett.
PD JUL
PY 2012
VL 22
IS 7
BP 345
EP 347
DI 10.1109/LMWC.2012.2201710
PG 3
WC Engineering, Electrical & Electronic
SC Engineering
GA 971CX
UT WOS:000306182400005
ER

PT J
AU Adley, MD
   Frank, AO
   Danielson, KT
   Akers, SA
   Cargile, JD
   Patterson, BC
   Termaath, S
AF Adley, Mark D.
   Frank, Andreas O.
   Danielson, Kent T.
   Akers, Stephen A.
   Cargile, James D.
   Patterson, Bruce C.
   Termaath, Stephanie
TI GENERATING PENETRATION RESISTANCE FUNCTIONS WITH A VIRTUAL PENETRATION
   LABORATORY (VPL): APPLICATIONS TO PROJECTILE PENETRATION AND STRUCTURAL
   RESPONSE SIMULATIONS
SO INTERNATIONAL JOURNAL OF STRUCTURAL STABILITY AND DYNAMICS
LA English
DT Article
DE Penetration mechanics; constitutive modeling; cavity expansion
ID MICROPLANE MODEL M4; LARGE-DEFORMATION; CONCRETE TARGETS; ALUMINUM
   TARGETS; MESHLESS METHODS; STRAIN; STRENGTH; STRESS; RODS
AB A new software package called the Virtual Penetration Laboratory (VPL) has been developed to automatically generate and optimize penetration resistance functions. We have used this VPL code to generate highly "tuned" penetration resistance functions that can distinctly model the penetration trajectory of steel projectiles into rate-independent, elastic-perfectly plastic aluminum targets. Projectiles with arbitrary nose geometry were considered in this example (i.e. conical, ogival, and spherical nose shapes). The penetration resistance of the aluminum target was determined by numerically solving a series of spherical and cylindrical cavity expansion problems. The solution to these cavity expansion problems were obtained with an explicit, dynamic finite element code that accounts for material and geometric nonlinearities. The resulting cavity expansion equations are then transformed to penetration resistance functions using various transformation algorithms, in order to determine an appropriate method to spatially distribute the resisting stresses on the projectile nose. The resulting penetration resistance functions were then used in a penetration trajectory code to predict the actual trajectories observed from a set of similar experiments.
C1 [Adley, Mark D.; Frank, Andreas O.; Danielson, Kent T.; Akers, Stephen A.; Cargile, James D.] USA, Engn Res & Dev Ctr, ATTN CEERD GM I 3909, Vicksburg, MS 39180 USA.
   [Patterson, Bruce C.] USAF, Res Lab Munit Directorate, Eglin AFB, FL USA.
   [Termaath, Stephanie] Appl Res Associates Inc, Ft Worth, TX USA.
RP Adley, MD (reprint author), USA, Engn Res & Dev Ctr, ATTN CEERD GM I 3909, Halls Ferry Rd Vicksburg, Vicksburg, MS 39180 USA.
EM mark.d.adley@erdc.usace.army.mil
FU  [DAAD19-03-D-0001]
FX The research reported herein was conducted as part of the U.S. Army
   Corps of Engineers Survivability and Protective Structures Technical
   Area, Hardened Combined Effects Penetrator Warheads Work Package, Work
   Unit "HPC Prediction of Weapon Penetration, Blast and Secondary
   Effects". The third author's contributions were performed in connection
   with contract DAAD19-03-D-0001 with the U.S. Army Research Laboratory.
   The authors gratefully acknowledge M. Forrestal and T. Warren for
   sharing their extensive notes on cavity expansion solution techniques
   and for numerous discussions over the years. Permission to publish was
   granted by Director, Geotechnical and Structures Laboratory.
NR 41
TC 0
Z9 0
U1 2
U2 8
PU WORLD SCIENTIFIC PUBL CO PTE LTD
PI SINGAPORE
PA 5 TOH TUCK LINK, SINGAPORE 596224, SINGAPORE
SN 0219-4554
J9 INT J STRUCT STAB DY
JI Int. J. Struct. Stab. Dyn.
PD JUL
PY 2012
VL 12
IS 4
AR 1250024
DI 10.1142/S0219455412500241
PG 25
WC Engineering, Civil; Engineering, Mechanical; Mechanics
SC Engineering; Mechanics
GA 973BQ
UT WOS:000306327100003
ER

PT J
AU Shewale, SV
   Anstadt, MP
   Horenziak, M
   Izu, B
   Morgan, EE
   Lucot, JB
   Morris, M
AF Shewale, Swapnil V.
   Anstadt, Mark P.
   Horenziak, Michael
   Izu, Brent
   Morgan, Eric E.
   Lucot, James B.
   Morris, Mariana
TI Sarin Causes Autonomic Imbalance and Cardiomyopathy: an Important Issue
   for Military and Civilian Health
SO JOURNAL OF CARDIOVASCULAR PHARMACOLOGY
LA English
DT Article
DE cardiac function; beta-adrenergic agonist; echocardiography;
   electrocardiography; atrial natriuretic peptide; corticosterone;
   autonomic nervous system
ID POSTTRAUMATIC-STRESS-DISORDER; CATECHOLAMINE BIOSYNTHETIC-ENZYMES;
   GULF-WAR VETERANS; DILATED CARDIOMYOPATHY; HEART-FAILURE; MICE; MOUSE;
   MODEL; RATS; ECHOCARDIOGRAPHY
AB Sarin, a lethal chemical nerve agent, may be a causative factor in multifactorial syndrome implicated in the Gulf War and Tokyo terrorist attacks. Although a high dose results in seizure and death, low-dose exposure may lead to autonomic imbalance and chronic cardiac pathologies. In this study, echocardiography and electrocardiography were used to examine the late-onset effects of a low-dose sarin on cardiac structure and function in mice. Adrenal corticosterone and tyrosine hydroxylase mRNA levels were measured. Stress responsiveness of the hypothalamic-pituitary-adrenal (HPA) axis was also tested. Findings demonstrate changes consistent with a dilated cardiomyopathy, including left ventricular dilatation, reduced contractility, and altered electrophysiological and inotropic responses to beta-adrenergic stimulation. Results also indicate reduced adrenal tyrosine hydroxylase mRNA, corticosterone and altered stress responsiveness of HPA indicating autonomic imbalance. The role of low-dose sarin/organophosphate exposure needs to be considered in the military and civilian populations that suffer from autonomic imbalance and/or cardiomyopathies of indeterminate origin.
C1 [Morris, Mariana] Wright State Univ, Boonshoft Sch Med, Dept Pharmacol & Toxicol, Dayton, OH 45435 USA.
   [Horenziak, Michael] USAF, Inst Technol, Dayton, OH USA.
   [Morgan, Eric E.] Univ Toledo, Coll Med, Toledo, OH 43606 USA.
RP Morris, M (reprint author), Wright State Univ, Boonshoft Sch Med, Dept Pharmacol & Toxicol, Dayton, OH 45435 USA.
EM mariana.morris@wright.edu
NR 38
TC 4
Z9 4
U1 2
U2 11
PU LIPPINCOTT WILLIAMS & WILKINS
PI PHILADELPHIA
PA 530 WALNUT ST, PHILADELPHIA, PA 19106-3621 USA
SN 0160-2446
J9 J CARDIOVASC PHARM
JI J. Cardiovasc. Pharmacol.
PD JUL
PY 2012
VL 60
IS 1
BP 76
EP 87
DI 10.1097/FJC.0b013e3182580b75
PG 12
WC Cardiac & Cardiovascular Systems; Pharmacology & Pharmacy
SC Cardiovascular System & Cardiology; Pharmacology & Pharmacy
GA 972JS
UT WOS:000306274000011
PM 22549449
ER

PT J
AU Digby, MS
   Owens, NM
AF Digby, Michael S.
   Owens, Nicole M.
TI Program Spotlight: San Antonio Uniformed Services Health Education
   Consortium
SO JOURNAL OF DRUGS IN DERMATOLOGY
LA English
DT Editorial Material
C1 [Digby, Michael S.; Owens, Nicole M.] San Antonio Uniformed Serv Hlth Educ Consortium, Dept Dermatol, San Antonio, TX USA.
RP Digby, MS (reprint author), Care of Beachkofsky TM, Dermatol Clin, 59MDOS SGO5D,2200 Bergquist Dr,Suite 1, Lackland AFB, TX 78236 USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU JOURNAL OF DRUGS IN DERMATOLOGY
PI NEW YORK
PA 377 PARK AVE SOUTH, 6TH FLOOR, NEW YORK, NY 10016 USA
SN 1545-9616
J9 J DRUGS DERMATOL
JI J. Drugs Dermatol.
PD JUL
PY 2012
VL 11
IS 7
BP 870
EP 870
PG 1
WC Dermatology
SC Dermatology
GA 970WX
UT WOS:000306164100017
ER

PT J
AU Beachkofsky, T
   Cragun, WC
AF Beachkofsky, Thomas
   Cragun, W. Chad
TI A Case of Perforating Dermatosis in a Patient With Primary Sclerosing
   Cholangitis
SO JOURNAL OF DRUGS IN DERMATOLOGY
LA English
DT Editorial Material
C1 [Beachkofsky, Thomas; Cragun, W. Chad] San Antonio Uniformed Serv Hlth Educ Consortium, Dept Dermatol, San Antonio, TX USA.
RP Beachkofsky, T (reprint author), Dermatol Clin, 59MDOS SGO5D,2200 Bergquist Dr,Suite 1, Lackland AFB, TX 78236 USA.
EM thomas.beachkofsky@us.af.mil
NR 6
TC 0
Z9 0
U1 0
U2 1
PU JOURNAL OF DRUGS IN DERMATOLOGY
PI NEW YORK
PA 377 PARK AVE SOUTH, 6TH FLOOR, NEW YORK, NY 10016 USA
SN 1545-9616
J9 J DRUGS DERMATOL
JI J. Drugs Dermatol.
PD JUL
PY 2012
VL 11
IS 7
BP 881
EP 882
PG 2
WC Dermatology
SC Dermatology
GA 970WX
UT WOS:000306164100020
PM 22777236
ER

PT J
AU Harding, AB
   Norling, BK
   Teixeira, EC
AF Harding, Aaron B.
   Norling, Barry K.
   Teixeira, Erica C.
TI The Effect of Surface Treatment of the Interfacial Surface on
   Fatigue-Related Microtensile Bond Strength of Milled Zirconia to
   Veneering Porcelain
SO JOURNAL OF PROSTHODONTICS-IMPLANT ESTHETIC AND RECONSTRUCTIVE DENTISTRY
LA English
DT Article
DE All-ceramic; zirconia framework; press-on ceramic; microtensile bond
   strength; surface treatment; sandblasting; liner material
ID ALL-CERAMIC RESTORATIONS; FIXED PARTIAL DENTURES; 3-YEAR FOLLOW-UP;
   Y-TZP ZIRCONIA; DIFFERENT COMPONENTS; FRACTURE-BEHAVIOR; FLEXURAL
   STRENGTH; CLINICAL SUCCESS; DENTAL CERAMICS; CORE
AB Purpose: The success of zirconia-reinforced all-ceramic crowns depends on the formation of a stable bond between the zirconia core and the veneering porcelain. The purpose of this study was to test the effects of liner application and airborne particle abrasion of a postsintered Y-TZP core on the bond strength between the zirconia core and veneering porcelain with or without cyclic loading. Materials and Methods: Kavo Everest (R) Y-TZP blank disks were sintered and divided into three treatment groups: airborne particle abrasion, IPS e.max (R) Ceram Zirliner application, or no surface treatment. The disks were then veneered with IPS e.max (R) ZirPress veneering porcelain. Half the veneered disks from each group were cyclically loaded. This created six experimental groups: three surface treatment groups cyclically loaded and three not loaded. The disks were then sectioned into microbars for microtensile bond strength (MTBS) testing (40 specimens per group). Specimens were luted to a fixture mount and loaded to failure using a universal testing machine (MTS Insight). The maximum force was measured and bond strength computed. Data were analyzed with a two-way ANOVA and Tukey's HSD test (a= 0.05). Results: Airborne particle abrasion significantly decreased MTBS values (p= 0.043), and ZirLiner application did not have a significant effect on MTBS values compared to control. Cyclic loading did not have a significant effect on MTBS values. The predominant failure mode in all groups was mixed. Conclusions: Airborne particle abrasion of the interfacial surface of the Everest (R) Y-TZP core significantly decreased the MTBS to ZirPress veneering porcelain when compared to no interfacial surface treatment. Application of ZirLiner to the interfacial surface of the Everest (R) Y-TZP core did not significantly increase or decrease the MTBS to ZirPress veneering porcelain, compared to the other surface treatments. Cyclic loading did not affect bond strengths in any of the groups, regardless of surface treatment. Neither cyclic loading nor surface treatment affected the failure mode of the specimens.
C1 [Harding, Aaron B.] Uniformed Serv Univ Hlth Sci, USAF, Sch Postgrad Dent, San Antonio, TX USA.
   [Norling, Barry K.; Teixeira, Erica C.] Univ Texas Hlth Sci Ctr San Antonio, Dept Comprehens Dent, San Antonio, TX 78229 USA.
RP Harding, AB (reprint author), Dunn Dent Clin, 1615 Truemper St, Lackland AFB, TX 78236 USA.
EM aaron.harding.dmd@gmail.com
RI Norling, Barry/I-4119-2013
OI Norling, Barry/0000-0001-6655-8750
NR 33
TC 14
Z9 15
U1 0
U2 8
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 1059-941X
J9 J PROSTHODONT
JI J. Prosthodont.
PD JUL
PY 2012
VL 21
IS 5
BP 346
EP 352
DI 10.1111/j.1532-849X.2012.00843.x
PG 7
WC Dentistry, Oral Surgery & Medicine
SC Dentistry, Oral Surgery & Medicine
GA 972KS
UT WOS:000306276600003
PM 22443122
ER

PT J
AU Caldwell, KB
   Graham, OZ
   Arnold, JJ
AF Caldwell, Kimberly B.
   Graham, Oliver Z.
   Arnold, James J.
TI Agranulocytosis from Levamisole-Adulterated Cocaine
SO JOURNAL OF THE AMERICAN BOARD OF FAMILY MEDICINE
LA English
DT Article
DE Agranulocytosis; Case Reports; Cocaine; Drug Utilization; Hematology;
   Levamisole
AB Introduction: Afebrile neutropenia with an absolute neutrophil count (ANC) of zero in a nonimmunocompromised individual is unusual. Outlined is a case of agranulocytosis likely due to levamisole laced cocaine. Given recent publications in the news media and medical journals, this is a pertinent issue for primary care providers.
   Case: A 57-year-old female presented with painful bowel movements and difficulty eating. Physical examination revealed two exquisitely tender ulcerated lesions on her lower lip and anus. Laboratory data revealed an ANC of 0 and urine drug screen positive for cocaine. She was prophylaxed with acyclovir, diflucan, and ciprofloxacin, and was started on granulocyte colony stimulating factor for four days. Her ANC normalized, but the cause of her severe neutropenia remained unclear.
   Discussion: Levamisole is a veterinary antihelminthic used for treatment of rheumatoid arthritis and colorectal cancer in humans. 88% of regional cocaine samples are testing positive for levamisole, which is thought to potentiate cocaine's effects but can also cause agranulocytosis.
   Conclusions: Our patient did not fit the clinical picture for malignancy, viral infection, or bone marrow pathology. Given the high rate of levamisole adulterated cocaine and an otherwise negative work-up, this is the most likely explanation for her agranulocytosis. (J Am Board Fam Med 2012;25:528-530.)
C1 [Graham, Oliver Z.] Contra Costa Reg Med Ctr, Martinez, CA USA.
RP Caldwell, KB (reprint author), David Grant Med Ctr, 101 Bodin Circle, Travis AFB, CA 94535 USA.
EM kimberly.caldwell@us.af.mil
NR 11
TC 4
Z9 4
U1 0
U2 0
PU AMER BOARD FAMILY MEDICINE
PI LEXINGTON
PA 2228 YOUNG DR, LEXINGTON, KY 40505 USA
SN 1557-2625
J9 J AM BOARD FAM MED
JI J. Am. Board Fam. Med.
PD JUL-AUG
PY 2012
VL 25
IS 4
BP 528
EP 530
DI 10.3122/jabfm.2012.04.110177
PG 3
WC Primary Health Care; Medicine, General & Internal
SC General & Internal Medicine
GA 971GD
UT WOS:000306190900017
PM 22773721
ER

PT J
AU Ashman, EJ
   Gronseth, GS
AF Ashman, Eric J.
   Gronseth, Gary S.
TI Level of evidence reviews Three years of progress
SO NEUROLOGY
LA English
DT Editorial Material
C1 [Ashman, Eric J.] Elmendorf AFB, Anchorage, AK USA.
   [Gronseth, Gary S.] Univ Kansas, Med Ctr, Kansas City, MO USA.
RP Ashman, EJ (reprint author), Elmendorf AFB, Anchorage, AK USA.
EM ej_ashman@yahoo.com
NR 2
TC 5
Z9 5
U1 1
U2 2
PU LIPPINCOTT WILLIAMS & WILKINS
PI PHILADELPHIA
PA 530 WALNUT ST, PHILADELPHIA, PA 19106-3621 USA
SN 0028-3878
J9 NEUROLOGY
JI Neurology
PD JUL
PY 2012
VL 79
IS 1
BP 13
EP 14
DI 10.1212/WNL.0b013e31825dce83
PG 2
WC Clinical Neurology
SC Neurosciences & Neurology
GA 971BE
UT WOS:000306176000004
PM 22722620
ER

PT J
AU Akers, BF
AF Akers, B. F.
TI Surfactant Influence on Water Wave Packets
SO STUDIES IN APPLIED MATHEMATICS
LA English
DT Article
ID CAPILLARY-GRAVITY-WAVES; BENJAMIN-FEIR INSTABILITY; DEEP-WATER; ENVELOPE
   SOLITONS; SOLITARY TYPE; EVOLUTION; VISCOSITY; FLOWS
AB The influence of surfactant on water wave packets is investigated. An envelope equation for a slowly varying wave packet in the potential flow equations with variable Bond number is derived. The properties of this equation depend on the relative phases of the wave packet and the distribution of surface tension. We observe that small variations in the Bond number may change the focusing nature of the envelope equation from that of the constant Bond number problem. Variations in Bond number can thus suppress, or incite, the Benjamin-Feir instability. The existence of envelope solitary waves depends in a similar way on the Bond number variation. The envelope equation is also derived in a larger class of models.
C1 USAF, Inst Technol, Dept Math & Stat, 2950 Hobson Way, Wright Patterson AFB, OH 45433 USA.
RP Akers, BF (reprint author), USAF, Inst Technol, Dept Math & Stat, 2950 Hobson Way, Wright Patterson AFB, OH 45433 USA.
EM Benjamin.Akers@afit.edu
NR 30
TC 1
Z9 1
U1 1
U2 2
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 0022-2526
EI 1467-9590
J9 STUD APPL MATH
JI Stud. Appl. Math.
PD JUL
PY 2012
VL 129
IS 1
BP 91
EP 102
DI 10.1111/j.1467-9590.2012.00547.x
PG 12
WC Mathematics, Applied
SC Mathematics
GA 968UF
UT WOS:000306009800004
ER

PT J
AU Cleaver, RM
   Lindsay, CM
AF Cleaver, Rebecca M.
   Lindsay, C. Michael
TI Detailed design and transport properties of a helium droplet nozzle from
   5 to 50 K
SO CRYOGENICS
LA English
DT Article
DE Helium droplet; Nozzle; Supersonic expansion; Skimmer; Hydrodynamics;
   Throughput; Multi-phase flow
ID SUPERFLUID-HELIUM; LIQUID-HELIUM; NANODROPLETS; SPECTROSCOPY; MOLECULES;
   CLUSTERS; HE-4; ATOMS; DISTRIBUTIONS; TEMPERATURE
AB This paper reports our efforts to engineer a robust, user-friendly, and broadly tunable helium droplet nozzle, and to quantitatively measure its thermal and mass transport performance. In addition to describing the physical design in detail, we report helium throughput measurements for a 6.4 mu m diameter nozzle over stagnation conditions ranging from 5 to 50 K and 10 to 100 bar. The measured flow rates were in excellent agreement with those predicted by a simple effusive flow model for nozzle temperatures above 20 K, but were systematically lower for both sub-critical and super-critical jets as the temperature was lowered. The helium flow through a 500 mu m skimmer was also measured, and the skimmed fraction was found to vary by two orders of magnitude over the range of stagnation conditions investigated. These results indicate a substantial narrowing of the total jet angle spread from similar to 90 degrees to 5 degrees at temperatures below 10 K. Efforts to image the low temperature jet with Schlieren and shadowgraph techniques were unsuccessful. These details combined with previously reported theory and experiments on the droplet size distributions provide the necessary foundation to predict cluster production rates and to customize nozzle/pump designs for specific applications. Published by Elsevier Ltd.
C1 [Cleaver, Rebecca M.; Lindsay, C. Michael] USAF, Res Lab, Energet Mat Branch, Eglin AFB, FL 32542 USA.
RP Lindsay, CM (reprint author), USAF, Res Lab, Energet Mat Branch, Eglin AFB, FL 32542 USA.
EM c.lindsay@us.af.mil
FU Air Force Office of Scientific Research [2303NW, 2303EW]
FX The authors would like to acknowledge the generous support of current
   and previous team members in the initial design of the instrument and
   interpretation of the present results: Ethan Holt, Voncile Ashley,
   Justin Samuel, R.J. Davis, Mario Fajardo, Samuel Emery, Brian Little,
   and Keith Rider. We would also like to recognize the design and
   engineering support of Eric Ripper and Mark Mattis from the Kurt J.
   Lesker Company and Brian Regel and Kevin Kuchta from Extrel CMS. We
   further acknowledge many valuable conversations with Gary Douberly and
   William Lewis on the helium droplet technique. This work was funded in
   part by the Air Force Office of Scientific Research under tasks 2303NW
   and 2303EW (Program Manager: Michael Berman). This article has been
   cleared for public release, Case Number 96ABW-2011-0498.
NR 42
TC 8
Z9 8
U1 1
U2 27
PU ELSEVIER SCI LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
SN 0011-2275
J9 CRYOGENICS
JI Cryogenics
PD JUL-SEP
PY 2012
VL 52
IS 7-9
BP 389
EP 397
DI 10.1016/j.cryogenics.2012.03.004
PG 9
WC Thermodynamics; Physics, Applied
SC Thermodynamics; Physics
GA 969CO
UT WOS:000306033500011
ER

PT J
AU Doepke, A
   Han, C
   Back, T
   Cho, WD
   Dionysiou, DD
   Shanov, V
   Halsall, HB
   Heineman, WR
AF Doepke, Amos
   Han, Changseok
   Back, Tyson
   Cho, Wondong
   Dionysiou, Dionysios D.
   Shanov, Vesselin
   Halsall, H. Brian
   Heineman, William R.
TI Analysis of the Electrochemical Oxidation of Multiwalled Carbon Nanotube
   Tower Electrodes in Sodium Hydroxide
SO ELECTROANALYSIS
LA English
DT Article
DE CNT; Nanotubes; Electrochemical oxidation; Sodium hydroxide
ID RAMAN-SPECTRA; NANOELECTRODE ARRAYS; SULFURIC-ACID; SPECTROSCOPY;
   SUPERCAPACITORS; PURIFICATION; PRETREATMENT; GROWTH
AB Towers of aligned multiwalled carbon nanotubes (MWCNTs) were electrochemically oxidized in aqueous 1 M NaOH. An oxidation current that decayed with time was monitored using amperometry at a fixed potential. Cyclic voltammetry showed that the background current and electrode capacitance increased after oxidation without significantly affecting the faradaic current from the reduction of ferricyanide. Oxidation in NaOH caused morphological changes and increased hydrophilicity of the MWCNT tower electrodes. XPS spectra indicated increased oxygen on the surface after oxidation, while Raman spectra indicated that a large amount of amorphous carbon was present before and after oxidation.
C1 [Doepke, Amos; Halsall, H. Brian; Heineman, William R.] Univ Cincinnati, Dept Chem, Cincinnati, OH 45221 USA.
   [Han, Changseok; Cho, Wondong; Dionysiou, Dionysios D.; Shanov, Vesselin] Univ Cincinnati, Sch Energy Environm Biol & Med Engn, Cincinnati, OH 45221 USA.
   [Back, Tyson] USAF, Res Lab, Mat & Mfg Directorate, Elect & Opt Mat Branch AFRL RXPS, Wright Patterson AFB, OH 45433 USA.
   [Back, Tyson] Universal Technol Corp, Dayton, OH 45432 USA.
RP Heineman, WR (reprint author), Univ Cincinnati, Dept Chem, Cincinnati, OH 45221 USA.
EM heinemwr@ucmail.uc.edu
FU University of Cincinnati Internal Collaborative Award (INST); Ohio Water
   Resources Center through USGS 104(b) program; National Science
   Foundation [NSF ERC 0812348]
FX This work was funded by the University of Cincinnati Internal
   Collaborative Award (INST), the Ohio Water Resources Center through a
   grant from the USGS 104(b) program and the National Science Foundation
   through a grant to the Engineering Research Center for Revolutionizing
   Metallic Biomaterials (NSF ERC 0812348). The authors thank Andre Summers
   (Miami University, Oxford, Ohio) for assistance with obtaining the Raman
   spectra.
NR 33
TC 8
Z9 8
U1 1
U2 21
PU WILEY-V C H VERLAG GMBH
PI WEINHEIM
PA BOSCHSTRASSE 12, D-69469 WEINHEIM, GERMANY
SN 1040-0397
J9 ELECTROANAL
JI Electroanalysis
PD JUL
PY 2012
VL 24
IS 7
BP 1501
EP 1508
DI 10.1002/elan.201200105
PG 8
WC Chemistry, Analytical; Electrochemistry
SC Chemistry; Electrochemistry
GA 968QL
UT WOS:000305999200003
ER

PT J
AU Jiang, H
   Patterson, M
   Brown, D
   Zhang, CH
   Pan, KC
   Subramanyam, G
   Kuhl, D
   Leedy, K
   Cerny, C
AF Jiang, Hai
   Patterson, Mark
   Brown, Dustin
   Zhang, Chenhao
   Pan, KuanChang
   Subramanyam, Guru
   Kuhl, David
   Leedy, Kevin
   Cerny, Charles
TI Miniaturized and Reconfigurable CPW Square-Ring Slot Antenna Loaded With
   Ferroelectric BST Thin Film Varactors
SO IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
LA English
DT Article
DE Antenna miniaturization; coplanar waveguide (CPW) antenna; ferroelectric
   thin film; ferroelectric varactor; reconfigurable antenna; slot loop
   antenna; varactor loadings
ID PATCH ANTENNA; BAND OPERATION; LOOP ANTENNA; BROAD-BAND; DESIGN; ARRAY;
   CIRCUIT; SINGLE
AB A novel miniaturized and reconfigurable coplanar waveguide (CPW) square-ring slot antenna is presented in this paper. The miniaturization is achieved via a hybrid approach including ferroelectric varactor loadings, high dielectric constant materials, and tuning stub for impedance matching. For the first time, nine shunt ferroelectric (FE) BST (Ba(1-x)SrxTiO3) thin film varactors are integrated with the CPW antenna structure achieving both antenna miniaturization and reconfiguration at the same time. The size of the miniaturized antenna is reduced to 0.067 lambda(0) x 0.067 lambda(0) without ground, and 0.067 lambda(0) x 0.067 lambda(0) with ground. The resonant frequency of the miniaturized antenna can be reconfigured from 5.3 GHz to 5.8 GHz by applying a DC voltage. Measured E-plane and H-plane co-polarized patterns are presented.
C1 [Jiang, Hai; Pan, KuanChang] Univ Dayton, Dept Elect & Comp Engn, Dayton, OH 45469 USA.
   [Patterson, Mark; Kuhl, David; Leedy, Kevin; Cerny, Charles] AFRL, Sensors Directorate, Dayton, OH 45432 USA.
RP Jiang, H (reprint author), Underwriters Labs LLC, Corp Res, Northbrook, IL 60062 USA.
EM Hai.Jiang@ul.com; Guru.Subramanyam@notes.udayton.edu
FU Air Force Research Laboratory Sensors Directorate
FX Manuscript received March 03, 2011; revised May 23, 2011; accepted
   January 24, 2012. Date of publication April 30, 2012; date of current
   version July 02, 2012. This work was supported in part by the Air Force
   Research Laboratory Sensors Directorate.
NR 55
TC 14
Z9 14
U1 0
U2 20
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 0018-926X
J9 IEEE T ANTENN PROPAG
JI IEEE Trans. Antennas Propag.
PD JUL
PY 2012
VL 60
IS 7
BP 3111
EP 3119
DI 10.1109/TAP.2012.2196918
PG 9
WC Engineering, Electrical & Electronic; Telecommunications
SC Engineering; Telecommunications
GA 970NS
UT WOS:000306138900005
ER

PT J
AU Cook, C
   Ross, MD
   Isaacs, R
   Hegedus, E
AF Cook, Chad
   Ross, Michael D.
   Isaacs, Robert
   Hegedus, Eric
TI Investigation of Nonmechanical Findings during Spinal Movement Screening
   for Identifying and/or Ruling Out Metastatic Cancer
SO PAIN PRACTICE
LA English
DT Article
DE metastatic cancer; screening; low back pain; low back pain; mechanical;
   lower back pain
ID LOW-BACK-PAIN; DIAGNOSTIC-TESTS; PRIMARY-CARE; MANAGEMENT; DISEASE;
   ACCURACY; BIAS
AB Study design: Retrospective cohort study. Objective: To investigate the diagnostic accuracy of lumbar movement restrictions and pain in patients with metastatic bone cancer. Background: When evaluating patients with low back pain, physical therapists have used the presence of nonmechanical findings during a spinal movement screen as 1 factor in determining whether physician referral is necessary. There are no studies that have investigated the accuracy of this strategy in a situation of diagnostic uncertainty. Methods: This study included 1,109 patients (655 women) with low back pain (mean age = 54.8 +/- 16.3 years) seen at a spine surgery center who received a clinical movement screen and an imaging-supported diagnosis by an orthopedic surgeon. No report of pain during movement and no limitation of movement were considered the 2 targeted findings as these are associated with nonmechanical findings. Results: Sixty-six patients were diagnosed with metastatic cancer, 61 with metastatic bone cancer and concomitant diagnoses. Pain-free lumbar movements in all directions for patients with metastatic bone cancer without concomitant diagnoses were associated with a posttest probability of 0.00 (+likelihood ratio = 2.4; -likelihood ratio = 0.0), which may be useful in ruling out spinal cancer. In situations where a concomitant diagnosis was present with cancer, the value of a movement screen was poor. Conclusion: Nonmechanical findings during a traditional movement screen are not specific to sinister conditions such as metastatic spinal cancer. Clinicians should expect concomitant conditions to exhibit painful or limited findings in patients with and without cancer.
C1 [Cook, Chad] Walsh Univ, Div Phys Therapy, N Canton, OH 44720 USA.
   [Ross, Michael D.] USAF, Phys Med Training Program, Ft Sam Houston, San Antonio, TX USA.
   [Isaacs, Robert] Duke Univ, Med Ctr, Durham, NC USA.
   [Hegedus, Eric] High Point Univ, Sch Hlth Sci, Phys Therapy Dept, High Point, NC USA.
RP Cook, C (reprint author), Walsh Univ, Div Phys Therapy, 2020 E Maple St, N Canton, OH 44720 USA.
EM ccook@walsh.edu
OI Hegedus, Eric/0000-0002-2170-0327
NR 35
TC 3
Z9 3
U1 0
U2 1
PU WILEY PERIODICALS, INC
PI SAN FRANCISCO
PA ONE MONTGOMERY ST, SUITE 1200, SAN FRANCISCO, CA 94104 USA
SN 1530-7085
J9 PAIN PRACT
JI Pain Pract.
PD JUL
PY 2012
VL 12
IS 6
BP 426
EP 433
DI 10.1111/j.1533-2500.2011.00519.x
PG 8
WC Anesthesiology; Clinical Neurology
SC Anesthesiology; Neurosciences & Neurology
GA 968SR
UT WOS:000306005600002
PM 22103245
ER

PT J
AU Richards, BC
   Hendrickson, J
   Olitzky, JD
   Gibson, R
   Gehl, M
   Kieu, K
   Polynkin, P
   Khitrova, G
   Gibbs, HM
   Khankhoje, UK
   Homyk, A
   Scherer, A
   Kim, JY
   Lee, YH
AF Richards, B. C.
   Hendrickson, J.
   Olitzky, J. D.
   Gibson, R.
   Gehl, M.
   Kieu, K.
   Polynkin, P.
   Khitrova, G.
   Gibbs, H. M.
   Khankhoje, U. K.
   Homyk, A.
   Scherer, A.
   Kim, J. -Y.
   Lee, Y. -H.
TI Progress in growth, fabrication, and characterization of semiconductor
   photonic crystal nanocavities (vol 248, pg 892, 2011]
SO PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS
LA English
DT Correction
DE microcavities; nanophotonics; photonic crystals
AB An error was made in the calculation of the photonic crystal mode volume. Fixing this error increases our mode volume by a factor of 2 and makes our claim of highest Q/V invalid.
C1 [Olitzky, J. D.; Gibson, R.; Gehl, M.; Kieu, K.; Polynkin, P.; Khitrova, G.; Gibbs, H. M.] Univ Arizona, Coll Opt Sci, Tucson, AZ 85721 USA.
   [Richards, B. C.] EMCORE Corp, Adv Concepts Team, Albuquerque, NM 87123 USA.
   [Hendrickson, J.] USAF, Res Lab, Sensors Directrorate, Wright Patterson AFB, OH 45433 USA.
   [Khankhoje, U. K.] CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA.
   [Homyk, A.; Scherer, A.] CALTECH, Elect Engn & Kavli Nanosci Inst, Pasadena, CA 91125 USA.
   [Kim, J. -Y.; Lee, Y. -H.] Korea Adv Inst Sci & Technol, Dept Phys, Taejon 305701, South Korea.
RP Gehl, M (reprint author), Univ Arizona, Coll Opt Sci, 1630 E Univ Blvd, Tucson, AZ 85721 USA.
EM mgehl@optics.arizona.edu
NR 2
TC 0
Z9 0
U1 0
U2 8
PU WILEY-V C H VERLAG GMBH
PI WEINHEIM
PA BOSCHSTRASSE 12, D-69469 WEINHEIM, GERMANY
SN 0370-1972
J9 PHYS STATUS SOLIDI B
JI Phys. Status Solidi B-Basic Solid State Phys.
PD JUL
PY 2012
VL 249
IS 7
BP 1477
EP 1477
DI 10.1002/pssb.201248147
PG 1
WC Physics, Condensed Matter
SC Physics
GA 968GY
UT WOS:000305966600026
ER

PT J
AU Gupta, S
   Abotula, S
   Chalivendra, VB
   Shukla, A
   Chona, R
AF Gupta, Sachin
   Abotula, Sandeep
   Chalivendra, Vijaya B.
   Shukla, Arun
   Chona, Ravi
TI Transient thermo-mechanical analysis of dynamic curving cracks in
   functionally graded materials
SO ACTA MECHANICA
LA English
DT Article
ID PLANE DISPLACEMENT-FIELDS; STRESS-INTENSITY FACTORS;
   FINITE-ELEMENT-ANALYSIS; ASYMPTOTIC ANALYSIS; THERMAL-STRESS; CURVED
   CRACK; EDGE CRACK; TIP; FRACTURE; PROPAGATION
AB Mixed-mode dynamic crack growth behavior along an arbitrarily smoothly varying path in functionally graded materials (FGMs) under transient thermo-mechanical loading is studied. An asymptotic analysis in conjunction with displacement potentials is used to develop transient thermo-mechanical stress fields around the propagating crack-tip. Asymptotic temperature field equations are derived for exponentially varying thermal properties, and later, these equations are used to derive transient thermo-mechanical stress fields for a curving crack in FGMs. The effect of the transient parameters (loading rate, crack-tip acceleration, and temperature change) and temperature gradient on the maximum principal stress and circumferential stress associated with the propagating crack-tip is discussed. Finally, using the minimum strain energy density criterion, the effect of temperature gradient, crack-tip speeds, and T-stress on crack growth directions is determined and discussed.
C1 [Gupta, Sachin; Abotula, Sandeep; Shukla, Arun] Univ Rhode Isl, Dept Mech Ind & Syst Engn, Dynam Photo Mech Lab, Kingston, RI 02881 USA.
   [Chalivendra, Vijaya B.] Univ Massachusetts Dartmouth, Dept Mech Engn, N Dartmouth, MA 02747 USA.
   [Chona, Ravi] USAF, Res Lab, Struct Sci Ctr, Air Vehicles Directorate, Wright Patterson AFB, OH 45433 USA.
RP Shukla, A (reprint author), Univ Rhode Isl, Dept Mech Ind & Syst Engn, Dynam Photo Mech Lab, Kingston, RI 02881 USA.
EM gupsac@my.uri.edu; sabotula@my.uri.edu; vchalivendra@umassd.edu;
   shuklaa@egr.uri.edu; ravi.chona@wpafb.af.mil
RI Gupta, Sachin/N-3687-2013
FU Air Force Office of Scientific Research [FA9550-09-1-0639]
FX The financial support of the Air Force Office of Scientific Research
   under Grant No. FA9550-09-1-0639 is gratefully acknowledged.
NR 40
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U1 1
U2 13
PU SPRINGER WIEN
PI WIEN
PA SACHSENPLATZ 4-6, PO BOX 89, A-1201 WIEN, AUSTRIA
SN 0001-5970
J9 ACTA MECH
JI Acta Mech.
PD JUL
PY 2012
VL 223
IS 7
BP 1485
EP 1506
DI 10.1007/s00707-012-0661-9
PG 22
WC Mechanics
SC Mechanics
GA 964FQ
UT WOS:000305679800010
ER

PT J
AU Moore, JP
   Shumaker, JA
   Houtz, MD
   Sun, LR
   Khramov, AN
   Jones, JG
AF Moore, Justin P.
   Shumaker, Joseph A.
   Houtz, Marlene D.
   Sun, Lirong
   Khramov, Alexander N.
   Jones, John G.
TI Thermal and optical properties of novel polyurea/silica
   organic-inorganic hybrid materials
SO JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
LA English
DT Article
DE ORMOSIL; Sol-gel; Optical coating; Light stripping; Fiber laser
ID THIN-FILMS
AB Current optical polymeric materials for advanced fiber laser development are susceptible to degradation due to the heat generated in high power usage. A suitable replacement light stripping material was explored to overcome this problem by examining optical and physical properties such as transmission/absorption, refractive index, thermal conductivity, and thermal stability. The synthesis and characterization of two new polyurea/silica ORMOSILs (ORganically MOdified SILicates) suitable for high temperature (up to 300 A degrees C) optical applications are reported herein. A one-pot, room temperature synthesis is based upon commercially available bis-isocyanates and an amino-silane. These materials exhibit the combined traits of both glass and polymer by displaying optical clarity over a wide range of wavelengths stretching from the edge of the UV (250 nm) to well into the NIR (2,000 nm), refractive indices in the visible spectrum (n = 1.50-1.63), thermal conductivities of 0.26 +/- A 0.09 W/mK (ORMOSIL-A) and 0.27 +/- A 0.07 W/mK (ORMOSIL-B), and thermal stabilities up to 300 A degrees C. The hybrid materials were found to be easily processed into films but thick casts (> 2 mm) were subject to increased rates of cracking and longer curing times. Although this is typical of sol-gel chemistries, the organic constituents of ORMOSILs reduce this effect as compared to purely inorganic sol-gels. The effect of thermal aging on the materials' properties will also be presented as well as a comparison of these materials and the current state of the art light stripping material.
C1 [Moore, Justin P.; Shumaker, Joseph A.; Houtz, Marlene D.; Khramov, Alexander N.; Jones, John G.] USAF, Res Lab, Mat & Mfg Directorate, Thermal Sci & Mat Branch, Wright Patterson AFB, OH 45433 USA.
   [Moore, Justin P.; Shumaker, Joseph A.; Houtz, Marlene D.] Univ Dayton, Res Inst, Dayton, OH 45469 USA.
   [Sun, Lirong] USAF, Res Lab, Mat & Mfg Directorate, Hardened Mat Branch, Wright Patterson AFB, OH 45433 USA.
   [Sun, Lirong] Gen Dynam Informat Technol, Dayton, OH 45431 USA.
   [Khramov, Alexander N.] Universal Technol Corp, Dayton, OH 45432 USA.
RP Moore, JP (reprint author), USAF, Res Lab, Mat & Mfg Directorate, Thermal Sci & Mat Branch, 2941 Hobson Way, Wright Patterson AFB, OH 45433 USA.
EM justinmoore123@hotmail.com
FU USAF
FX The authors would like to thank the USAF for funding this research
   project as well as Dr. John Workman (University of Dayton Research
   Institute) and Mr. Tom E. Kerschner (both of Chemsys Inc.) for the
   elemental analysis provided. We would also like to thank Dr. Steven T.
   Patton for his editorial input and insights on this effort.
NR 17
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U1 3
U2 54
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 JUL
PY 2012
VL 63
IS 1
BP 168
EP 176
DI 10.1007/s10971-012-2782-y
PG 9
WC Materials Science, Ceramics
SC Materials Science
GA 964HF
UT WOS:000305684000022
ER

PT J
AU Anderson, MD
   Perram, GP
AF Anderson, Monte D.
   Perram, Glen P.
TI Optical delay with spectral hole burning in Doppler-broadened cesium
   vapor
SO OPTICS COMMUNICATIONS
LA English
DT Article
DE Hole burning; Slow light; Group delay; Alkali metal vapor
ID ELECTROMAGNETICALLY INDUCED TRANSPARENCY; PROPAGATION
AB The full frequency dependence of the optical delay in the Cs D-1 (6(2)S(1/2) - 6(2)P(1/2)) line has been observed, including all four hyperfine split components. Pulse delays of 1.6 ns to 24.1 ns are obtained by scanning across the hyperfine splitting associated with the lower S-2(1/2) state. Optical control of pulse delays in cesium vapor was demonstrated by pumping the D-2 (6(2)S(1/2) - 6(2)P(3/2)) transition and observing resulting holes in the D-1 delay spectrum. For a pump at four times the saturation intensity, the pulse delays are reduced by a maximum of 78% in a narrow region of 110 MHz. The frequency dependence of the delays of the probe laser in the vicinity of the spectral holes agrees with a Kramers-Kronig model prediction. Published by Elsevier B.V.
C1 [Anderson, Monte D.] USAF Acad, Dept Phys, Colorado Springs, CO 80840 USA.
   [Perram, Glen P.] USAF, Dept Engn Phys, Inst Technol, Wright Patterson AFB, OH 45433 USA.
RP Anderson, MD (reprint author), USAF Acad, Dept Phys, 2354 Fairchild Dr, Colorado Springs, CO 80840 USA.
EM monte.anderson@usafa.edu; glen.perram@afit.edu
OI Perram, Glen/0000-0002-4417-3929
FU High Energy Laser Joint Technology Office; Air Force Office of
   Scientific Research
FX Thanks to Eric Guild for his assistance in the laboratory. This work is
   supported by the High Energy Laser Joint Technology Office and the Air
   Force Office of Scientific Research.
NR 13
TC 1
Z9 1
U1 1
U2 6
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0030-4018
J9 OPT COMMUN
JI Opt. Commun.
PD JUL 1
PY 2012
VL 285
IS 15
BP 3264
EP 3268
DI 10.1016/j.optcom.2012.03.021
PG 5
WC Optics
SC Optics
GA 964CR
UT WOS:000305671800004
ER

PT J
AU Christodoulou, CG
   Tawk, Y
   Lane, SA
   Erwin, SR
AF Christodoulou, Christos G.
   Tawk, Youssef
   Lane, Steven A.
   Erwin, Scott R.
TI Reconfigurable Antennas for Wireless and Space Applications
SO PROCEEDINGS OF THE IEEE
LA English
DT Article
DE Cognitive radio; deployable antennas; ferrites; frequency tuning; liquid
   crystals; multiple-input-multiple-output (MIMO); photoconductive
   switches; PIN diodes; polarization; radiation pattern; radio-frequency
   microelectromechanical systems (RF-MEMS); reconfigurable antennas;
   satellite communication; varactors
ID MICROSTRIP PATCH ANTENNA; RF-MEMS SWITCHES; ADAPTIVE MIMO SYSTEMS; BAND
   SLOT ANTENNA; COGNITIVE RADIO; PATTERN DIVERSITY; WIDE-BAND; FREQUENCY;
   DESIGN; POLARIZATION
AB Reconfigurable antennas, with the ability to radiate more than one pattern at different frequencies and polarizations, are necessary in modern telecommunication systems. The requirements for increased functionality (e. g., direction finding, beam steering, radar, control, and command) within a confined volume place a greater burden on today's transmitting and receiving systems. Reconfigurable antennas are a solution to this problem. This paper discusses the different reconfigurable components that can be used in an antenna to modify its structure and function. These reconfiguration techniques are either based on the integration of radio-frequency microelectromechanical systems (RF-MEMS), PIN diodes, varactors, photoconductive elements, or on the physical alteration of the antenna radiating structure, or on the use of smart materials such as ferrites and liquid crystals. Various activation mechanisms that can be used in each different reconfigurable implementation to achieve optimum performance are presented and discussed. Several examples of reconfigurable antennas for both terrestrial and space applications are highlighted, such as cognitive radio, multiple-input-multiple-output (MIMO) systems, and satellite communication.
C1 [Christodoulou, Christos G.; Tawk, Youssef] Univ New Mexico, Elect & Comp Engn Dept, Albuquerque, NM 87131 USA.
   [Lane, Steven A.; Erwin, Scott R.] USAF, Res Lab, Space Vehicles Directorate, Kirtland AFB, NM 87117 USA.
RP Christodoulou, CG (reprint author), Univ New Mexico, Elect & Comp Engn Dept, Albuquerque, NM 87131 USA.
EM christos@ece.unm.edu; yatawk@ece.unm.edu
NR 69
TC 112
Z9 114
U1 5
U2 56
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 0018-9219
EI 1558-2256
J9 P IEEE
JI Proc. IEEE
PD JUL
PY 2012
VL 100
IS 7
SI SI
BP 2250
EP 2261
DI 10.1109/JPROC.2012.2188249
PG 12
WC Engineering, Electrical & Electronic
SC Engineering
GA 963LD
UT WOS:000305621300014
ER

PT J
AU Billock, VA
   Tsou, BH
AF Billock, Vincent A.
   Tsou, Brian H.
TI Elementary Visual Hallucinations and Their Relationships to Neural
   Pattern-Forming Mechanisms
SO PSYCHOLOGICAL BULLETIN
LA English
DT Article
DE intrinsic neural activity; Kluver form constant; migraine fortification
   aura; phosphene; spatiotemporal pattern formation
ID TRANSCRANIAL MAGNETIC STIMULATION; ELECTRICALLY-INDUCED PHOSPHENES;
   PSYCHOTOGENIC DRUG ACTION; OCULAR DOMINANCE COLUMNS; SACCADIC
   EYE-MOVEMENTS; RETINAL GANGLION-CELLS; HUMAN OCCIPITAL CORTEX;
   FLICKER-INDUCED COLOR; STRIATE CORTEX; MIGRAINE AURA
AB An extraordinary variety of experimental (e.g., flicker, magnetic fields) and clinical (epilepsy, migraine) conditions give rise to a surprisingly common set of elementary hallucinations, including spots, geometric patterns, and jagged lines, some of which also have color, depth, motion, and texture. Many of these simple hallucinations fall into a small number of perceptual geometries the Kluver forms that (via a nonlinear mapping from retina to cortex) correspond to even simpler sets of oriented stripes of cortical activity (and their superpositions). Other simple hallucinations (phosphenes and fortification auras) are linked to the Kluver forms and to pattern-forming cortical mechanisms by their spatial and temporal scales. The Kluver cortical activity patterns are examples of self-organized pattern formation that arise from nonlinear dynamic interactions between excitatory and inhibitory cortical neurons; with reasonable modifications, this model accounts for a wide range of hallucinated patterns. The Kluver cortical activity patterns are a subset of autonomous spatiotemporal cortical patterns, some of which have been studied with functional imaging techniques. Understanding the interaction of these intrinsic patterns with stimulus-driven cortical activity is an important problem in neuroscience. In line with this, hallucinatory pattern formation interacts with physical stimuli, and many conditions that induce hallucinations show interesting interactions with one another. Both types of interactions are predictable from neural and psychophysical principles such as localized processing, excitatory inhibitory neural circuits, lateral inhibition, simultaneous and sequential contrast, saccadic suppression, and perceptual opponency. Elementary hallucinations arise from familiar mechanisms stimulated in unusual ways.
C1 [Billock, Vincent A.] USAF, NRC, Res Lab, Wright Patterson AFB, OH 45433 USA.
RP Billock, VA (reprint author), USAF, NRC, Res Lab, Room 210,Bldg 248, Wright Patterson AFB, OH 45433 USA.
EM vincent.billock.ctr@wpafb.af.mil
FU National Research Council/Air Force Office of Scientific Research
FX This research was funded in part by a National Research Council/Air
   Force Office of Scientific Research Senior Research Award to Vincent A.
   Billock. We thank Scott Kelso and Mingzhou Ding for introducing us to
   this topic; Oliver Sacks for suggesting that we look at relationships
   between patterns formed under migraine and image stabilization; Angela
   Brown, Lynn Olzak, Keith White, and Ewen King-Smith for helpful
   discussions on migraine, functional imaging limitations, and retinal
   sampling; and Bard Ermentrout and Whitman Richards for comments on an
   earlier version of the manuscript.
NR 223
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U1 6
U2 27
PU AMER PSYCHOLOGICAL ASSOC
PI WASHINGTON
PA 750 FIRST ST NE, WASHINGTON, DC 20002-4242 USA
SN 0033-2909
EI 1939-1455
J9 PSYCHOL BULL
JI Psychol. Bull.
PD JUL
PY 2012
VL 138
IS 4
BP 744
EP 774
DI 10.1037/a0027580
PG 31
WC Psychology; Psychology, Multidisciplinary
SC Psychology
GA 963WL
UT WOS:000305655600007
PM 22448914
ER

PT J
AU Ericson, JM
   Christensen, JC
AF Ericson, Justin M.
   Christensen, James C.
TI Reallocating attention during multiple object tracking
SO ATTENTION PERCEPTION & PSYCHOPHYSICS
LA English
DT Article
DE Object-based attention; Selective attention
ID VISUAL-ATTENTION; PUZZLING FINDINGS; INFORMATION; SELECTION; CAPACITY;
   VISION; MEMORY; NUMBER; SHIFTS; MOT
AB Wolfe, Place, and Horowitz (Psychonomic Bulletin & Review 14:344-349, 2007) found that participants were relatively unaffected by selecting and deselecting targets while performing a multiple object tracking task, such that maintaining tracking was possible for longer durations than the few seconds typically studied. Though this result was generally consistent with other findings on tracking duration (Franconeri, Jonathon, & Scimeca Psychological Science 21:920-925, 2010), it was inconsistent with research involving cuing paradigms, specifically precues (Pylyshyn & Annan Spatial Vision 19:485-504, 2006). In the present research, we broke down the addition and removal of targets into separate conditions and incorporated a simple performance model to evaluate the costs associated with the selection and deselection of moving targets. Across three experiments, we demonstrated evidence against a cost being associated with any shift in attention, but rather that varying the type of cue used for target deselection produces no additional cost to performance and that hysteresis effects are not induced by a reduction in tracking load.
C1 [Ericson, Justin M.; Christensen, James C.] USAF, Res Lab, Dayton, OH 45433 USA.
   [Ericson, Justin M.] Louisiana State Univ, Baton Rouge, LA 70803 USA.
RP Ericson, JM (reprint author), USAF, Res Lab, 2255 H St,B248, Dayton, OH 45433 USA.
EM james.christensen@wpafb.af.mil
OI Christensen, James/0000-0003-4539-5467
FU Air Force Research Laboratory
FX This research was funded by the Air Force Research Laboratory; funding
   to J.M.E. was administered by the Consortium Research Fellows Program.
   The authors wish to thank Melissa Beck for helpful insight and support
   of the study, and three anonymous reviewers for their assistance in
   improving the manuscript.
NR 32
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U1 1
U2 11
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 1943-3921
J9 ATTEN PERCEPT PSYCHO
JI Atten. Percept. Psychophys.
PD JUL
PY 2012
VL 74
IS 5
BP 831
EP 840
DI 10.3758/s13414-012-0294-z
PG 10
WC Psychology; Psychology, Experimental
SC Psychology
GA 962PV
UT WOS:000305558300006
PM 22477020
ER

PT J
AU Mall, S
   Boyer, BH
AF Mall, S.
   Boyer, B. H.
TI Cyclic and sustained loading behaviors of oxide/oxide Nextel (TM)
   720/alumina composite with double edge sharp notch
SO COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
LA English
DT Article
DE Ceramic-matrix composites (CMCs); Stress concentrations; Fatigue; Creep
ID CERAMIC-MATRIX COMPOSITE; TEMPERATURE MECHANICAL-BEHAVIOR;
   ELEVATED-TEMPERATURE; FRACTURE-BEHAVIOR; FATIGUE BEHAVIOR;
   CREEP-RUPTURE; POROUS-MATRIX
AB This study investigated an oxide/oxide CMC consisting of Nextel(TM)720 (meta-stable mullite) fibers in alumina matrix, N720/A, with 0 degrees/90 degrees fiber orientation having double edge sharp notch under sustained and cyclic loading conditions at 1200 degrees C in laboratory air environment. Monotonic tensile tests at 1200 degrees C were also conducted. Fracture surfaces were examined to analyze failure and damage mechanisms. Comparisons with counterparts from unnotched geometry showed N720/A is mildly sensitive to the sharp notch under monotonic tensile, creep and fatigue loading conditions. The ultimate tensile strength of the composite was reduced by about 15% in the presence of the sharp notch. The rupture strength of the sharp notched geometry was reduced by about 15% of unnotched geometry for a given rupture time. The fatigue strength was reduced by about 20% of unnotched geometry for a given number of cycles to failure. Deformation under cyclic loading condition had contributions both from fatigue and creep. Damage mechanisms were identical under cyclic and sustained loading conditions. Published by Elsevier Ltd.
C1 [Mall, S.; Boyer, B. H.] USAF, Inst Technol, Dept Aeronaut & Astronaut, Wright Patterson AFB, OH 45433 USA.
RP Mall, S (reprint author), USAF, Inst Technol, Dept Aeronaut & Astronaut, Wright Patterson AFB, OH 45433 USA.
EM Shankar.Mall@afit.edu
NR 23
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U1 2
U2 16
PU ELSEVIER SCI LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
SN 1359-835X
J9 COMPOS PART A-APPL S
JI Compos. Pt. A-Appl. Sci. Manuf.
PD JUL
PY 2012
VL 43
IS 7
BP 1153
EP 1159
DI 10.1016/j.compositesa.2012.02.002
PG 7
WC Engineering, Manufacturing; Materials Science, Composites
SC Engineering; Materials Science
GA 960DX
UT WOS:000305369300016
ER

PT J
AU Brothers, MD
   LaChapelle, JA
   Wynkoop, BS
   Schindler, CR
   Grossmann, EC
   Apt, TM
   Rudico, ER
   Zupan, MF
   Nelson, JL
AF Brothers, Michael D.
   LaChapelle, James A.
   Wynkoop, Bryan S.
   Schindler, Cole R.
   Grossmann, Elizabeth C.
   Apt, Tyner M.
   Rudico, Erlyn R.
   Zupan, Michael F.
   Nelson, Jeffery L.
TI Rapid Moderate Altitude De-acclimatization and the Effect of Exercise
   Prescription to Mitigate Loss
SO JOURNAL OF GENERAL INTERNAL MEDICINE
LA English
DT Meeting Abstract
C1 [Brothers, Michael D.; LaChapelle, James A.; Wynkoop, Bryan S.; Schindler, Cole R.; Grossmann, Elizabeth C.; Apt, Tyner M.; Rudico, Erlyn R.; Zupan, Michael F.; Nelson, Jeffery L.] USAF Acad, Colorado Springs, CO USA.
EM michael.brothers@usafa.edu
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
EI 1525-1497
J9 J GEN INTERN MED
JI J. Gen. Intern. Med.
PD JUL
PY 2012
VL 27
SU 2
MA 1383
BP 285
EP 285
PG 1
WC Health Care Sciences & Services; Medicine, General & Internal
SC Health Care Sciences & Services; General & Internal Medicine
GA V35IG
UT WOS:000209142901140
ER

PT J
AU Arseneau, CAM
   Hrabak, TM
   Weibel, KH
AF Arseneau, Capt April M.
   Hrabak, Todd M.
   Weibel, Kirk H.
TI Inhalant Horse Allergens and Allergies: A Review of the Literature
SO MILITARY MEDICINE
LA English
DT Review
AB A wealth of literature exists regarding common allergies to household pets such as cat or dog. Allergy to horse, however, is infrequently discussed in the medical literature despite significant sensitization rates among urban-dwelling subjects without direct exposure to horses. A literature search was conducted in PubMed and additional references were collected from surveying the references of the pulled articles. This review summarizes aspects of IgE-mediated horse allergy including the prevalence and mechanisms for sensitization, clinical presentation, molecular characterization of the major and minor horse allergens, and the role of allergen immunotherapy. There is currently only one horse immunotherapy study showing significant improvement in clinically sensitive patients. The 1997 World Health Organization Position Paper on Immunotherapy lists horse immunotherapy among the areas needing further clinical research. Inclusion of horse into the standard allergen panel for children and adults has been supported by several authors, although further identification and characterization of horse antigens is needed to provide the most efficacious extract. As clinicians, we need to be aware of the potential cross-reactivity among the common mammalian allergens and consider the possibility of known or occult exposure to horse as a possible source of symptom exacerbation in susceptible individuals.
C1 [Arseneau, Capt April M.] Wilford Hall USAF Med Ctr, Dept Allergy & Immunol, Lackland AFB, TX 78236 USA.
   [Hrabak, Todd M.] Desert Ctr Allergy & Chest Dis, Phoenix, AZ 85032 USA.
   [Weibel, Kirk H.] Brooke Army Med Ctr, Dept Allergy & Immunol, Ft Sam Houston, TX 78234 USA.
RP Arseneau, CAM (reprint author), Wilford Hall USAF Med Ctr, Dept Allergy & Immunol, 2200 Bergquist Dr,Suite 1, Lackland AFB, TX 78236 USA.
NR 51
TC 0
Z9 0
U1 1
U2 1
PU ASSOC MILITARY SURG US
PI BETHESDA
PA 9320 OLD GEORGETOWN RD, BETHESDA, MD 20814 USA
SN 0026-4075
EI 1930-613X
J9 MIL MED
JI Milit. Med.
PD JUL
PY 2012
VL 177
IS 7
BP 877
EP 882
PG 6
WC Medicine, General & Internal
SC General & Internal Medicine
GA V33NZ
UT WOS:000209026800019
ER

PT J
AU Weaver, LK
   Cifu, D
   Hart, B
   Wolf, G
   Miller, RS
AF Weaver, Lindell K.
   Cifu, David
   Hart, Brett
   Wolf, George
   Miller, R. Scott
TI Hyperbaric oxygen for post-concussion syndrome: Design of Department of
   Defense clinical trials
SO UNDERSEA AND HYPERBARIC MEDICINE
LA English
DT Article
ID TRAUMATIC BRAIN-INJURY
AB The current wars in the Middle East have resulted in between 10-20% of U.S. service members with mild traumatic brain injury (mTBI). While anecdotal reports have associated hyperbaric oxygen (HBO2) with improved outcomes after mTBI, controlled research is lacking. The Department of Defense (DoD), in collaboration with the Department of Veterans Affairs (DVA), has a comprehensive program examining this issue. The DoD's four randomized controlled trials will enroll a total of 242 service members with post-concussion syndrome and expose them to a range of control, sham and HBO2 conditions for 40 sessions over a period of eight to 11 weeks. Compression pressures will range from 1.2 atm abs (sham) to 2.4 atm abs, and oxygen concentration will range from room air (sham and control) to 100%. Outcomes measures include both subjective and objective measures performed at baseline, at exposure completion, and at three to 12 months' follow-up. This integrated program of clinical trials investigating the efficacy of HBO2 in service members with persistent symptoms following mTBI exposure will be important to define practice guidelines and, if needed, for the development of definitive clinical trials in this population.
C1 [Weaver, Lindell K.] Intermt LDS Hosp, Salt Lake City, UT USA.
   [Weaver, Lindell K.] Intermt Med Ctr, Murray, UT USA.
   [Weaver, Lindell K.] Univ Utah, Sch Med, Salt Lake City, UT USA.
   [Cifu, David] Stat 4PM& R Program Off, Dept Vet Affairs, Washington, DC USA.
   [Cifu, David] Virginia Commonwealth Univ, Dept PM & R, Richmond, VA USA.
   [Hart, Brett] Naval Operat Med Inst NOMI, Detachment Naval Aerosp Med Inst NAMI, Pensacola, FL USA.
   [Wolf, George] USAF, Sch Aerosp Med, Hyperbar Med Dept, Lackland AFB, TX USA.
   [Miller, R. Scott] US Army Med Mat Dev Act USAMMDA, Ft Detrick, MD USA.
RP Weaver, LK (reprint author), Intermt LDS Hosp, Salt Lake City, UT USA.
EM lindell.weaver@imail.org
FU Intermountain Healthcare [W911QY-11-C-0062]; U.S. Army Medical Material
   Development Command/U.S. Army Medical Research and Material Command
   (USAMMDA/USAMRMC) [W911QY-11-C-0062]; Defense Advanced Research Projects
   Agency [N66001-09-2-206]
FX Dr. Weaver's efforts were supported, in part, through a contact between
   Intermountain Healthcare and the U.S. Army Medical Material Development
   Command/U.S. Army Medical Research and Material Command
   (USAMMDA/USAMRMC) (W911QY-11-C-0062).; Dr. Cifu's efforts were
   supported, in part, through a Defense Advanced Research Projects Agency
   grant (N66001-09-2-206).
NR 25
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Z9 19
U1 0
U2 6
PU UNDERSEA & HYPERBARIC MEDICAL SOC INC
PI DURHAM
PA 21 WEST COLONY PLACE, STE 280, DURHAM, NC 27705 USA
SN 1066-2936
J9 UNDERSEA HYPERBAR M
JI Undersea Hyperb. Med.
PD JUL-AUG
PY 2012
VL 39
IS 4
BP 807
EP 814
PG 8
WC Marine & Freshwater Biology; Medicine, Research & Experimental
SC Marine & Freshwater Biology; Research & Experimental Medicine
GA 250BP
UT WOS:000326825400005
PM 22908837
ER

PT J
AU Sun, SMS
   Deng, X
   Sabo, R
   Carrico, R
   Schubert, CM
   Wan, W
   Sabo, C
AF Sun, Shumei S.
   Deng, Xiaoyan
   Sabo, Roy
   Carrico, Robert
   Schubert, Christine M.
   Wan, Wen
   Sabo, Cynthia
TI Secular trends in body composition for children and young adults: The
   fels longitudinal study
SO AMERICAN JOURNAL OF HUMAN BIOLOGY
LA English
DT Article
ID NUTRITION EXAMINATION SURVEYS; MASS INDEX; US CHILDREN; METABOLIC
   SYNDROME; CHILDHOOD OBESITY; NATIONAL-HEALTH; BLOOD-PRESSURE;
   RISK-FACTORS; ADOLESCENTS; PREVALENCE
AB Objectives: To determine secular trends by birth decade in body mass index (BMI), waist circumference/height (W/Ht), percent body fat (PBF), and fat-free mass adjusted for height squared (FFM/Ht2) in children and adolescents aged 818 years. Methods: Serial data were analyzed from 628 boys and 591 girls aged 818 years who participated in the Fels Longitudinal Study. Subjects were stratified by birth decade from 1960 to 1999. Means and standard deviations were computed for all measurements by birth decade, age, and sex. A repeated-measures analysis of variance was used data to ascertain secular trends separately for boys and girls. Results: Boys and girls born in the 1990s had significantly higher mean BMI, W/Ht, and PBF than did children born in previous decades. Mean FFM/Ht2 was significantly smaller in boys born in the 1990s than boys of the same age born in earlier decades. No secular trend was noted in FFM/Ht2 in girls by decade of birth. Conclusion: Our analysis of serial data collected over 4 decades confirms the secular trend in childhood BMI previously observed in successive cross-sectional studies. Our analysis discloses significant positive secular trends in W/Ht and PBF in both boys and girls and a significant negative secular trend in FFM/Ht2 in boys over the last 4 decades of the 20th century. The secular changes presage increases in the prevalence of conditions associated with childhood and adolescent obesitysuch as hypertension, glucose intolerance, and dyslipidemiathat may appear as early as the second decade of life. Am. J. Hum. Biol., 2012. (C) 2012 Wiley Periodicals, Inc.
C1 [Sun, Shumei S.; Deng, Xiaoyan; Sabo, Roy; Carrico, Robert; Wan, Wen; Sabo, Cynthia] Virginia Commonwealth Univ, Sch Med, Dept Biostat, Richmond, VA 23298 USA.
   [Schubert, Christine M.] USAF, Dept Math & Stat, AFIT ENC, Inst Technol, Wright Patterson AFB, OH 45433 USA.
RP Sun, SMS (reprint author), Virginia Commonwealth Univ, Sch Med, Dept Biostat, 830 E Main St,POB 980032, Richmond, VA 23298 USA.
EM ssun@vcu.edu
FU National Institutes of Health, Bethesda, Maryland [U01HL101064-02,
   R01HD060913-03, R01HD038356, DK 071485, HL 072838, HD 12252]
FX Contract grant sponsor: National Institutes of Health, Bethesda,
   Maryland; Contract grant numbers: U01HL101064-02, R01HD060913-03,
   R01HD038356, DK 071485, HL 072838, HD 12252.
NR 38
TC 8
Z9 10
U1 0
U2 3
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 1042-0533
J9 AM J HUM BIOL
JI Am. J. Hum. Biol.
PD JUL-AUG
PY 2012
VL 24
IS 4
BP 506
EP 514
DI 10.1002/ajhb.22256
PG 9
WC Anthropology; Biology
SC Anthropology; Life Sciences & Biomedicine - Other Topics
GA 954ZI
UT WOS:000304986300018
PM 22410970
ER

PT J
AU Telesca, D
   Nie, Y
   Budnick, JI
   Wells, BO
   Sinkovic, B
AF Telesca, D.
   Nie, Y.
   Budnick, J. I.
   Wells, B. O.
   Sinkovic, B.
TI Surface valence states and stoichiometry of non-superconducting and
   superconducting FeTe films
SO SURFACE SCIENCE
LA English
DT Article
DE Photoemission; Superconducting FeTe thin films
ID POLYCRYSTALLINE IRON; XPS
AB We report the surface electronic structure and stoichiometry of FeTe films following the incorporation of oxygen by three different methods: air exposure, dry oxygen exposure and low temperature oxygen annealing. X-ray photoemission experiments show that oxygen incorporation changes the initial valence state of Fe from 0 to mainly 3+. We also observe that the Te changes valence from initially 0 to mixed 0 and 4+. The rate of valence changes is seen to depend on the method of incorporation. In addition, it is observed that the surface of the FeTe films is left in a Te deficient state following any type of exposure to oxygen. Published by Elsevier B.V.
C1 [Telesca, D.] USAF, Space Elect Branch, Res Lab, RVSEF, Kirtland AFB, NM 87117 USA.
   [Telesca, D.; Nie, Y.; Budnick, J. I.; Wells, B. O.; Sinkovic, B.] Univ Connecticut, Dept Phys, Storrs, CT 06269 USA.
   [Nie, Y.; Budnick, J. I.; Wells, B. O.] Univ Connecticut, Inst Mat Sci, Storrs, CT 06269 USA.
RP Telesca, D (reprint author), USAF, Space Elect Branch, Res Lab, RVSEF, Kirtland AFB, NM 87117 USA.
EM donaldtelesca@gmail.com
RI Nie, Yuefeng/A-1595-2013; Nie, Yuefeng/L-8071-2013
OI Nie, Yuefeng/0000-0002-3449-5393; Nie, Yuefeng/0000-0002-3449-5393
FU US-DOE [DE-FG02-00ER45801]; SMART Scholarship Program; OSD-T&E (Office
   of the Secretary Defense-Test and Evaluation); National Defense
   Education Program (NDEP) BA-1, Basic Research [PE0601120D8Z]
FX Work by Barrett Wells and Yuefeng Nie was supported by the US-DOE
   through contract no. DE-FG02-00ER45801. This work was supported by the
   SMART Scholarship Program, OSD-T&E (Office of the Secretary Defense-Test
   and Evaluation), and Defense-Wide PE0601120D8Z National Defense
   Education Program (NDEP) BA-1, Basic Research.
NR 9
TC 2
Z9 2
U1 5
U2 29
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0039-6028
J9 SURF SCI
JI Surf. Sci.
PD JUL
PY 2012
VL 606
IS 13-14
BP 1056
EP 1061
DI 10.1016/j.susc.2012.02.026
PG 6
WC Chemistry, Physical; Physics, Condensed Matter
SC Chemistry; Physics
GA 951SP
UT WOS:000304740600013
ER

PT J
AU Miller, JD
   Pollock, TM
AF Miller, J. D.
   Pollock, T. M.
TI Process Simulation for the Directional Solidification of a Tri-Crystal
   Ring Segment via the Bridgman and Liquid-Metal-Cooling Processes
SO METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND
   MATERIALS SCIENCE
LA English
DT Article
ID MICROSTRUCTURE; SUPERALLOYS
AB The feasibility of a monocrystalline ring comprised of a multiply-seeded, SX ring separated by low-angle boundaries was investigated for two thicknesses and two processing techniques. In particular, solidification experiments using 1.9- and 5.1-cm-thick tri-crystal castings were conducted in a furnace capable of either the Bridgman or liquid metal cooling (LMC) mode. LMC is a high-gradient directional solidification process that provides refinement of dendritic structure by submerging the casting in a liquid-metal-coolant bath upon withdrawal from the mold heater. The degree of structure refinement was investigated in these castings with varying cross-sectional areas. Solidification modeling was used to optimize process conditions and investigate the thermal characteristics of each process for both casting configurations. Predicted relationships between dendritic structure, cooling rate, and thermal gradients in the axial and transverse directions are presented. A model for the prediction of thermal behavior for Bridgman and LMC techniques using complex casting configurations with section-thickness variations, encompassing a broad range of thermal conditions, was validated. A viable processing route for a monocrystalline ring was identified using the LMC technique, which mitigates the detrimental effects of radiation view factors present in the Bridgman process. Solidification modeling identified the process conditions required to produce a new casting configuration with minimal casting trials.
C1 [Miller, J. D.] USAF, Res Lab, AFRL RXLM, Wright Patterson AFB, OH 45433 USA.
   [Miller, J. D.; Pollock, T. M.] Univ Michigan, Dept Mat Sci & Engn, Ann Arbor, MI 48109 USA.
   [Pollock, T. M.] Univ Calif Santa Barbara, Dept Mat, Santa Barbara, CA 93106 USA.
RP Miller, JD (reprint author), USAF, Res Lab, AFRL RXLM, Wright Patterson AFB, OH 45433 USA.
EM jonathan.miller@wpafb.af.mil
NR 25
TC 9
Z9 10
U1 5
U2 20
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 1073-5623
J9 METALL MATER TRANS A
JI Metall. Mater. Trans. A-Phys. Metall. Mater. Sci.
PD JUL
PY 2012
VL 43A
IS 7
BP 2414
EP 2425
DI 10.1007/s11661-012-1104-x
PG 12
WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical
   Engineering
SC Materials Science; Metallurgy & Metallurgical Engineering
GA 947CK
UT WOS:000304404000022
ER

PT J
AU Vallespin, D
   Badcock, KJ
   Da Ronch, A
   White, MD
   Perfect, P
   Ghoreyshi, M
AF Vallespin, D.
   Badcock, K. J.
   Da Ronch, A.
   White, M. D.
   Perfect, P.
   Ghoreyshi, M.
TI Computational fluid dynamics framework for aerodynamic model assessment
SO PROGRESS IN AEROSPACE SCIENCES
LA English
DT Review
DE Flight dynamics; CFD; Aircraft manoeuvre; Manoeuvre
ID DIRECT TRAJECTORY OPTIMIZATION; FLIGHT SIMULATION; PSEUDOSPECTRAL
   METHOD; COSTATE ESTIMATION; AIRCRAFT; MANEUVERS
AB This paper reviews the work carried out at the University of Liverpool to assess the use of CFD methods for aircraft flight dynamics applications. Three test cases are discussed in the paper, namely, the Standard Dynamic Model, the Ranger 2000 jet trainer and the Stability and Control Unmanned Combat Air Vehicle. For each of these, a tabular aerodynamic model based on CFD predictions is generated along with validation against wind tunnel experiments and flight test measurements. The main purpose of the paper is to assess the validity of the tables of aerodynamic data for the force and moment prediction of realistic aircraft manoeuvres. This is done by generating a manoeuvre based on the tables of aerodynamic data, and then replaying the motion through a time-accurate computational fluid dynamics calculation. The resulting forces and moments from these simulations were compared with predictions from the tables. As the latter are based on a set of steady-state predictions, the comparisons showed perfect agreement for slow manoeuvres. As manoeuvres became more aggressive some disagreement was seen, particularly during periods of large rates of change in attitudes. Finally, the Ranger 2000 model was used on a flight simulator. Crown Copyright (C) 2012 Published by Elsevier Ltd. All rights reserved.
C1 [Vallespin, D.; Badcock, K. J.; Da Ronch, A.; White, M. D.; Perfect, P.] Univ Liverpool, Dept Engn, Liverpool L69 3BX, Merseyside, England.
   [Ghoreyshi, M.] USAF Acad, Colorado Springs, CO 80840 USA.
RP Vallespin, D (reprint author), Univ Liverpool, Dept Engn, Liverpool L69 3BX, Merseyside, England.
EM D.Vallespin@liverpool.ac.uk; kbadcock@liverpool.ac.uk;
   andreadr@liverpool.ac.uk; mdw@liverpool.ac.uk; me0u114a@liverpool.ac.uk;
   mehdi.ghoreyshi.ctr.gb@usafa.edu
OI White, Mark/0000-0002-8611-9525
FU UK Applied Aerodynamics Consortium (UKAAC) under EPSRC [EP/F005954/1];
   QinetiQ studentship; European Union; EPSRC
FX This study is supported by an EPSRC and QinetiQ studentship. The authors
   also gratefully acknowledge contributions from the RTO AVT-161 Technical
   group, the Garteur group AG-47 and the SimSAC Project under funding from
   the Sixth Framework Programme of the European Union. Computer time was
   provided through the UK Applied Aerodynamics Consortium (UKAAC) under
   EPSRC Grant EP/F005954/1.
NR 45
TC 5
Z9 5
U1 1
U2 19
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0376-0421
J9 PROG AEROSP SCI
JI Prog. Aeosp. Sci.
PD JUL
PY 2012
VL 52
SI SI
BP 2
EP 18
DI 10.1016/j.paerosci.2011.12.004
PG 17
WC Engineering, Aerospace
SC Engineering
GA 950DV
UT WOS:000304630400002
ER

PT J
AU Ombrello, T
   Carter, C
   Katta, V
AF Ombrello, Timothy
   Carter, Campbell
   Katta, Viswanath
TI Burner platform for sub-atmospheric pressure flame studies
SO COMBUSTION AND FLAME
LA English
DT Article
DE Laminar flames; Hencken burner; Sub-atmospheric pressure; Weakly
   stretched; Flame speed; OH PLIF
ID HEAT-FLUX METHOD; STOKES-RAMAN SCATTERING; BURNING VELOCITY; MIXTURES;
   SPEEDS; TEMPERATURE; HYDROGEN; NUMBER; CARS
AB Hencken burner flames at sub-atmospheric pressure were characterized experimentally to show their unique structure for detailed flame studies. Methane-air flames at 16.7 kPa were shown to be lifted and stably anchored at significant distances (up to 18 mm) above the burner surface, while maintaining a flat and one-dimensional laminar structure and near adiabatic conditions. Particle image velocimetry was used to identify the weakly stretched regime (strain rate = 20-70 s(-1)) of the flames, as well as the flame speeds, while OH number densities were measured through laser-induced fluorescence and calibrated through absorption. The flame speeds and quantitative OH profiles were compared to one-dimensional and two-dimensional flame simulations using the chemical kinetic mechanisms of USC Mech II and GRI-3.0 and showed good agreement. Flames produced by a Hencken burner at sub-atmospheric pressure were shown to accurately represent a steady, laminar, nearly one-dimensional, minimally curved, weakly stretched, and near adiabatic flame, which could be compared to one-dimensional freely-propagating flame simulations with minimal corrections and extrapolations. Published by Elsevier Inc. on behalf of The Combustion Institute.
C1 [Ombrello, Timothy; Carter, Campbell] USAF, Res Lab, Prop Directorate, Wright Patterson AFB, OH 45433 USA.
   [Katta, Viswanath] Innovat Sci Solut Inc, Dayton, OH 45440 USA.
RP Ombrello, T (reprint author), USAF, Res Lab, Prop Directorate, 1950 5th St, Wright Patterson AFB, OH 45433 USA.
EM timothy.ombrello@wpafb.af.mil; campbell.carter@wpafb.af.mil;
   vrkatta@gmail.com
FU National Research Council at the United States Air Force Research
   Laboratory, Wright-Patterson Air Force Base; Air Force Office of
   Scientific Research
FX The authors wish to thank Dr. Sang Hee Won of Princeton University and
   Dr. Emanuel Stockman of Lockheed Martin for their invaluable input on
   the experiments and modeling efforts, as well as Professor Yiguang Ju
   and Professor Frederick Dryer of Princeton University for their
   guidance. Part of the research was performed while the corresponding
   author held a National Research Council Research Associateship Award at
   the United States Air Force Research Laboratory, Wright-Patterson Air
   Force Base. The work was also supported by the Air Force Office of
   Scientific Research.
NR 24
TC 10
Z9 10
U1 0
U2 12
PU ELSEVIER SCIENCE INC
PI NEW YORK
PA 360 PARK AVE SOUTH, NEW YORK, NY 10010-1710 USA
SN 0010-2180
J9 COMBUST FLAME
JI Combust. Flame
PD JUL
PY 2012
VL 159
IS 7
BP 2363
EP 2373
DI 10.1016/j.combustflame.2012.03.010
PG 11
WC Thermodynamics; Energy & Fuels; Engineering, Multidisciplinary;
   Engineering, Chemical; Engineering, Mechanical
SC Thermodynamics; Energy & Fuels; Engineering
GA 944OM
UT WOS:000304213700012
ER

PT J
AU White, TJ
AF White, Timothy J.
TI Light to work transduction and shape memory in glassy, photoresponsive
   macromolecular systems: Trends and opportunities
SO JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS
LA English
DT Article
DE amorphous; azo polymers; glassy polymers; photochemistry; shape memory
ID CRYSTAL NETWORK ACTUATORS; THIN-FILMS; PHOTOMECHANICAL RESPONSE;
   CONTAINING POLYMERS; MOLECULAR MOBILITY; AZO-POLYMERS; AZOBENZENE;
   ISOMERIZATION; DEFORMATION; TEMPERATURE
AB Light can wirelessly direct functional responses in photoresponsive polymeric materials and composites. The intensity, phase, and polarization of light can be spatially modulated into complex patterns with holography (intensity or polarization) or masking (intensity or phase). Deriving from these foundational properties of light, photoresponsive macromolecular systems exhibit exceeding potential to yield rapid and highly engineered macroscopic as well as spatially selectable mechanically adaptive responses useful as soft actuators or topographical surfaces in aerospace, automotive, and biomedical applications. (C) 2012 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys, 2012
C1 USAF, Res Lab, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA.
RP White, TJ (reprint author), USAF, Res Lab, Mat & Mfg Directorate, 3005 Hobson Way,Ste 1, Wright Patterson AFB, OH 45433 USA.
EM timothy.white2@wpafb.af.mil
RI White, Timothy/D-4392-2012
FU Air Force Office of Scientific Research; Air Force Research Laboratory
FX The author acknowledges financial support from the Air Force Office of
   Scientific Research and the Air Force Research Laboratory. Special
   thanks to Kyung Min Lee, Timothy J. Bunning, Richard A. Vaia, Loon-Seng
   Tan, Nelson V. Tabiryan, Matthew L. Smith, Hilmar Koerner, and David H.
   Wang for insightful discussions in our collaborative research on this
   topic.
NR 50
TC 23
Z9 23
U1 0
U2 63
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 0887-6266
J9 J POLYM SCI POL PHYS
JI J. Polym. Sci. Pt. B-Polym. Phys.
PD JUL 1
PY 2012
VL 50
IS 13
BP 877
EP 880
DI 10.1002/polb.23079
PG 4
WC Polymer Science
SC Polymer Science
GA 946JJ
UT WOS:000304347500001
ER

PT J
AU Smarslok, BP
   Haftka, RT
   Ifju, PG
AF Smarslok, Benjamin P.
   Haftka, Raphael T.
   Ifju, Peter G.
TI Correlation model for composite elastic properties using only
   measurements from a single specimen
SO PROBABILISTIC ENGINEERING MECHANICS
LA English
DT Article
DE Composite property uncertainty; Specimen variability; Measurement error;
   Fiber volume fraction; Covariance-correlation model; Probabilistic
   analysis
AB In probabilistic design, composite material properties are often treated as independent random variables since correlation coefficients are not widely available. This is due to the paucity of experiments where correlation is measured. However, high material correlations are expected from common physical characteristics, such as variability in fiber volume fraction. Therefore, the focus of this paper is to translate known variability in composition into a correlation model for elastic constants. The dependence of the elastic constants on fiber volume fraction was estimated from simple mixture rules. The correlated material variability was applied to a glass/epoxy material system. The material variability was combined with the measurement error to obtain the total covariance of the elastic constants. The measurement error for the glass/epoxy laminate was from correlated data from a single vibration testing experiment. In this case of a single test, the variability between specimens was not captured in the measurement error, and the proposed correlation model provides a physical basis for approximating the specimen variability. The uncertainty in elastic properties was propagated to strain under mechanical loading in a pressure vessel problem using the classical lamination theory. The results were interpreted as a failure probability according to the maximum strain criterion. It was found that neglecting correlations can lead to an inefficient or unsafe design. (C) 2011 Elsevier Ltd. All rights reserved.
C1 [Smarslok, Benjamin P.; Haftka, Raphael T.; Ifju, Peter G.] Univ Florida, Dept Mech & Aerosp Engn, Gainesville, FL 32611 USA.
RP Smarslok, BP (reprint author), Struct Sci Ctr, AF Res Lab, Air Vehicles Directorate, Wright Patterson AFB, OH USA.
EM benjamin.smarslok@wpafb.af.mil
FU NASA
FX This work has been supported by the NASA Constellation University
   Institute Program (CUIP) during the first author's Ph.D. research.
NR 12
TC 5
Z9 5
U1 0
U2 7
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 JUL
PY 2012
VL 29
BP 64
EP 69
DI 10.1016/j.probengmech.2011.08.008
PG 6
WC Engineering, Mechanical; Mechanics; Statistics & Probability
SC Engineering; Mechanics; Mathematics
GA 920YZ
UT WOS:000302446500007
ER

PT J
AU Voorhees, A
   Millwater, H
   Bagley, R
   Golden, P
AF Voorhees, A.
   Millwater, H.
   Bagley, R.
   Golden, P.
TI Fatigue sensitivity analysis using complex variable methods
SO INTERNATIONAL JOURNAL OF FATIGUE
LA English
DT Article
DE Fatigue life prediction; Sensitivity methods; Complex Taylor series
   expansion
ID DESIGN; DERIVATIVES; APPROXIMATION; PERFORMANCE
AB The sensitivity of the computed cycles-to-failure and other lifing estimates to the various input parameters is a valuable, yet largely unexploited, aspect of a fatigue lifing analysis. Two complex variable sensitivity methods, complex Taylor series expansion (CTSE) and Fourier differentiation (FD), are adapted and applied to fatigue analysis through the development of a complex variable fatigue analysis software (CVGROW). The software computes the cycles-to-failure and the sensitivities of the computed cycles-to-failure with respect to parameters of interest such as the initial crack size, material properties, geometry, and loading. The complex variable methods are shown to have advantages over traditional numerical differentiation in that more accurate and stable first and second order derivatives are obtained using CTSE and more accurate and stable higher order derivatives are obtained using FD. (C) 2012 Elsevier Ltd. All rights reserved.
C1 [Millwater, H.] Univ Texas San Antonio, Dept Mech Engn, San Antonio, TX 78249 USA.
   [Golden, P.] USAF, Res Lab, RXLMN, Dayton, OH 45433 USA.
RP Millwater, H (reprint author), Univ Texas San Antonio, Dept Mech Engn, 1 UTSA Circle, San Antonio, TX 78249 USA.
EM harry.millwater@utsa.edu
OI Voorhees, Andrew/0000-0002-8125-8825
FU Air Force [FA8650-07-C-5060]
FX This work was supported under Air Force Agreement FA8650-07-C-5060, Dr.
   Patrick J. Golden, AFRL/RXLMN, Project Monitor. The authors would like
   to thank Juan Ocampo for many improvements to the crack growth software.
NR 25
TC 5
Z9 5
U1 0
U2 8
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 JUL
PY 2012
VL 40
BP 61
EP 73
DI 10.1016/j.ijfatigue.2012.01.016
PG 13
WC Engineering, Mechanical; Materials Science, Multidisciplinary
SC Engineering; Materials Science
GA 921ZA
UT WOS:000302515400008
ER

PT J
AU El-Gabry, LA
   Rivir, RB
AF El-Gabry, Lamyaa A.
   Rivir, Richard B.
TI Effect of Pulsed Film Cooling on Leading Edge Film Effectiveness
SO JOURNAL OF TURBOMACHINERY-TRANSACTIONS OF THE ASME
LA English
DT Article
ID COMPOUND-ANGLE HOLES; HEAT-TRANSFER; JET; DENSITY; MODEL
AB Detailed film effectiveness measurements have been made on a cylindrical leading edge surface for steady and pulsating flows. The film hole is off centered by 21.5 deg from the centerline and angled 20 deg to the surface and 90 deg from the streamwise direction. Two jet-to-cross-flow velocity ratios have been considered: VR = 1 and 2, which correspond to blowing ratios of 1 and 2, respectively. The pulsating frequency is 10 Hz and the duty cycle is 50%. Comparisons between film effectiveness with a pulsating film and a continuous film show that for the same blowing ratio, the effectiveness of the film drops by a factor of 2 when the flow is pulsed. Hotwire measurements are made to characterize the pulsating velocity waveform at the exit of the film exit and verify the integrity of the pulse. The variation in the measured surface adiabatic wall temperature over the pulsing duration is very small, suggesting a large thermal inertia that keeps the wall surface largely unaffected by the time scale of the pulsations; this holds true for both blowing ratios tested. [DOI: 10.1115/1.4003653]
C1 [El-Gabry, Lamyaa A.] Amer Univ Cairo, Dept Mech Engn, New Cairo 11835, Egypt.
   [Rivir, Richard B.] USAF, Res Lab, Prop Directorate, Wright Patterson AFB, OH 45433 USA.
RP El-Gabry, LA (reprint author), Amer Univ Cairo, Dept Mech Engn, New Cairo 11835, Egypt.
EM lelgabry@aucegypt.edu; richard.rivir@wpafb.af.mil
FU Air Force Summer Faculty Fellowship Program
FX The authors would like to thank S. Ou, R. Sondergaard, and A. Lethander
   at the AFRL Propulsion Directorate and J. Rutledge at the Air Force
   Institute of Technology for their assistance. The first author would
   also like to acknowledge the financial support of the Air Force Summer
   Faculty Fellowship Program.
NR 19
TC 4
Z9 4
U1 1
U2 5
PU ASME-AMER SOC MECHANICAL ENG
PI NEW YORK
PA THREE PARK AVE, NEW YORK, NY 10016-5990 USA
SN 0889-504X
J9 J TURBOMACH
JI J. Turbomach.-Trans. ASME
PD JUL
PY 2012
VL 134
IS 4
AR 041005
DI 10.1115/1.4003653
PG 6
WC Engineering, Mechanical
SC Engineering
GA 797BB
UT WOS:000293096100005
ER

PT J
AU Burnett, RL
   Terry, RE
   Alvarez, M
   Balzotti, C
   Murtha, T
   Webster, D
   Silverstein, J
AF Burnett, Richard L.
   Terry, Richard E.
   Alvarez, Marco
   Balzotti, Christopher
   Murtha, Timothy
   Webster, David
   Silverstein, Jay
TI The ancient agricultural landscape of the satellite settlement of
   Ramonal near Tikal, Guatemala
SO QUATERNARY INTERNATIONAL
LA English
DT Article
ID SOUTHERN MAYA LOWLANDS; STABLE CARBON ISOTOPES; PREHISTORIC FOREST
   CLEARANCE; SOIL RESOURCES; WETLAND AGRICULTURE; MAIZE AGRICULTURE;
   ENVIRONMENTAL-CHANGE; PETEXBATUN REGION; PIEDRAS-NEGRAS; RAIN-FOREST
AB Soil science methodologies often enrich archaeological reconstructions. In the Maya Lowlands of Mesoamerica, stable carbon (C) isotope ratio (delta C-13) analysis of soil organic matter (SOM) from profiles near ancient archaeological sites has been used to interpret the vegetative histories related to ancient maize agriculture. Due to distinct photosynthetic processes, the decomposed organic matter from the cultivation of maize can be distinguished from SOM derived from native forest detritus. The recalcitrant nature of humic substances allows for this distinction to be preserved through time. This study evaluates SOM delta C-13 from 98 soil profiles near Tikal, Guatemala to identify areas of ancient Maya agriculture and the staple crops used. Ancillary physical and chemical properties of the soil profiles were examined to facilitate and to supplement the interpretation of the isotope data. Most of the soils analyzed in this study are shallow Haprendolls with limited C isotopic evidence of prehistoric vegetation changes. The deeper, well-developed Argiudolls and Hapludolls contained strong evidence of vegetation changes associated with ancient maize agriculture. Areas with strong delta C-13 signatures of ancient C-4 vegetation corresponded with foot- and toeslope locations, high clay content and low phosphorus (P) levels. The shallow backslope soils lacked significant evidence of ancient agriculture. The connections between profile location, settlement, isotope data, and P levels enable the identification of both agriculture production zones and enhanced understanding of stable C isotope dynamics in soils within the unique physiographic and archaeological surroundings of the Maya Lowlands. (C) 2011 Elsevier Ltd and INQUA. All rights reserved.
C1 [Burnett, Richard L.; Terry, Richard E.; Alvarez, Marco; Balzotti, Christopher] Brigham Young Univ, Dept Plant & Wildlife Sci, Provo, UT 84602 USA.
   [Murtha, Timothy] Penn State Univ, Dept Landscape Architecture, University Pk, PA 16802 USA.
   [Webster, David] Penn State Univ, Dept Anthropol, University Pk, PA 16802 USA.
   [Silverstein, Jay] Joint POW MIA Accounting Command, Intelligence & GIS Sect, Hickam AFB, HI 96853 USA.
RP Terry, RE (reprint author), Brigham Young Univ, Dept Plant & Wildlife Sci, Provo, UT 84602 USA.
EM richard_terry@byu.edu
FU National Science Foundation [BCS-0443280]; Brigham Young University
FX This portion of the Re-evaluation of the Earthworks at Tikal, Guatemala
   project was funded by the National Science Foundation (Grant
   BCS-0443280) and by Brigham Young University. The Instituto de
   Antropologia e Historia, the Consejo Nacional de Areas Protegidas, and
   the Parque Nacional Tikal of Guatemala granted permission for this
   research to take place. The Re-evaluation of the Earthworks at Tikal,
   Guatemala project thanks all those who assisted with the collection,
   preparation, and analysis of the soil samples. Special thanks goto
   Horacio Martinez and Kirk Straight for their contributions to this
   study.
NR 105
TC 6
Z9 6
U1 2
U2 11
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 1040-6182
EI 1873-4553
J9 QUATERN INT
JI Quat. Int.
PD JUN 28
PY 2012
VL 265
BP 101
EP 115
DI 10.1016/j.quaint.2011.03.002
PG 15
WC Geography, Physical; Geosciences, Multidisciplinary
SC Physical Geography; Geology
GA 972BH
UT WOS:000306251000010
ER

PT J
AU Campos, R
   Guenthner, AJ
   Meuler, AJ
   Tuteja, A
   Cohen, RE
   McKinley, GH
   Haddad, TS
   Mabry, JM
AF Campos, Raymond
   Guenthner, Andrew J.
   Meuler, Adam J.
   Tuteja, Anish
   Cohen, Robert E.
   McKinley, Gareth H.
   Haddad, Timothy S.
   Mabry, Joseph M.
TI Superoleophobic Surfaces through Control of Sprayed-on Stochastic
   Topography
SO LANGMUIR
LA English
DT Article
ID CONTACT-ANGLE HYSTERESIS; OIL-REPELLENT SURFACES; SUPERAMPHIPHOBIC
   SURFACE; FABRICATION; SUBSTRATE; COATINGS; ADHESION
AB The liquid repellency and surface topography characteristics of coatings comprising a sprayed-on mixture of fluoroalkyl-functional precipitated silica and a fluoropolymer binder were examined using contact and sliding angle analysis, electron microscopy, and image analysis for determination of fractal dimensionality. The coatings proved to be an especially useful class of liquid repellent materials due to their combination of simple and scalable deposition process, low surface energy, and the roughness characteristics of the aggregates. These characteristics interact in a unique way to prevent the buildup of binder in interstitial regions, preserving re-entrant curvature across multiple length scales, thereby enabling a wide range of liquid repellency, including superoleophobicity. In addition, rather than accumulating in the interstices, the binder becomes widely distributed across the surface of the aggregates, enabling a mechanism in which a simple shortage or excess of binder controls the extent of coating roughness at very small length scales, thereby controlling the extent of liquid repellence.
C1 [Guenthner, Andrew J.; Mabry, Joseph M.] USAF, Prop Directorate, Res Lab, Edwards AFB, CA 93524 USA.
   [Campos, Raymond; Haddad, Timothy S.] USAF, ERC Inc, Res Lab, Edwards AFB, CA 93524 USA.
   [Meuler, Adam J.] USAF, Natl Res Council, Res Lab, Edwards AFB, CA 93524 USA.
   [Tuteja, Anish] Univ Michigan, Dept Mat Sci & Engn, Ann Arbor, MI 48109 USA.
   [Cohen, Robert E.] MIT, Dept Chem Engn, Cambridge, MA 02139 USA.
   [McKinley, Gareth H.] MIT, Dept Mech Engn, Cambridge, MA 02139 USA.
RP Guenthner, AJ (reprint author), USAF, Prop Directorate, Res Lab, Edwards AFB, CA 93524 USA.
EM andrew.guenthner@edwards.af.mil; joseph.mabry@edwards.af.mil
FU Air Force Office of Scientific Research; Air Force Research Laboratory,
   Propulsion Directorate; National Research Council
FX Support for this work from the Air Force Office of Scientific Research,
   the Air Force Research Laboratory, Propulsion Directorate, and the
   National Research Council (AJM) is gratefully appreciated. The authors
   thank Mr. Brian Moore of AFRL for helping prepare the video files
   included in the Supporting Information.
NR 34
TC 40
Z9 40
U1 9
U2 113
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0743-7463
J9 LANGMUIR
JI Langmuir
PD JUN 26
PY 2012
VL 28
IS 25
BP 9834
EP 9841
DI 10.1021/la301480s
PG 8
WC Chemistry, Multidisciplinary; Chemistry, Physical; Materials Science,
   Multidisciplinary
SC Chemistry; Materials Science
GA 963YR
UT WOS:000305661400078
PM 22612380
ER

PT J
AU Crown, MD
AF Crown, Misty D.
TI Validation of the NOAA Space Weather Prediction Center's solar flare
   forecasting look-up table and forecaster-issued probabilities
SO SPACE WEATHER-THE INTERNATIONAL JOURNAL OF RESEARCH AND APPLICATIONS
LA English
DT Article
AB This paper provides an assessment of the operational solar flare look-up table currently in use at the National Oceanic and Atmospheric Administration (NOAA) Space Weather Prediction Center (SWPC) during solar cycle 23 (May 1996 - December 2008). To assess the value of human interaction, a validation of subjective flare probability forecasts was conducted and compared to the results obtained from the climatological look-up table used at SWPC. Probabilistic flare forecasts are evaluated using the Brier Skill Score, then discretized and entered into contingency tables from which a variety of verification measures are calculated. The ultimate goal of this report is to provide an operational baseline, whereby the scores and statistics from this paper can be used as the basis for future evaluation of models presented to the operational community.
C1 USAF, Res Lab, Battlespace Environm Div, Space Vehicles Directorate, Kirtland AFB, NM 87117 USA.
RP Crown, MD (reprint author), USAF, Res Lab, Battlespace Environm Div, Space Vehicles Directorate, 3550 Aberdeen Ave SE,Bldg 570, Kirtland AFB, NM 87117 USA.
EM misty.crown@kirtland.af.mil
NR 5
TC 9
Z9 9
U1 0
U2 3
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 1539-4956
J9 SPACE WEATHER
JI Space Weather
PD JUN 26
PY 2012
VL 10
AR S06006
DI 10.1029/2011SW000760
PG 4
WC Astronomy & Astrophysics; Geochemistry & Geophysics; Meteorology &
   Atmospheric Sciences
SC Astronomy & Astrophysics; Geochemistry & Geophysics; Meteorology &
   Atmospheric Sciences
GA 968QO
UT WOS:000305999600001
ER

PT J
AU Shenogina, NB
   Tsige, M
   Patnaik, SS
   Mukhopadhyay, SM
AF Shenogina, Natalia B.
   Tsige, Mesfin
   Patnaik, Soumya S.
   Mukhopadhyay, Sharmila M.
TI Molecular Modeling Approach to Prediction of Thermo-Mechanical Behavior
   of Thermoset Polymer Networks
SO MACROMOLECULES
LA English
DT Article
ID MONTE-CARLO-SIMULATION; CROSS-LINKED POLYMERS; EPOXY-RESIN;
   MECHANICAL-PROPERTIES; THERMOPLASTIC POLYMER; DYNAMICS SIMULATION;
   COMPOSITE MATERIALS; ELASTIC MODULI; CURE; NANOCOMPOSITES
AB Molecular dynamics and molecular mechanics simulations have been used to study thermo-mechanical response of highly cross-linked polymers composed of epoxy resin DGEBA and hardener DETDA. The effective cross-linking approach used in this work allowed construction of a set of stress-free molecular models with high conversion degree containing up to 35000 atoms. The generated structures were used to investigate the influence of model size, length of epoxy strands, and degree of cure on thermo-mechanical properties. The calculated densities, coefficients of thermal expansion, and glass transition temperatures of the systems are found to be in good agreement with experimental data. The computationally efficient static deformation approach we used to calculate elastic constants of the systems successfully compensated for the large scattering of the mechanical properties data due to nanoscopically small volume of simulation cells and allowed comparison of properties of similar polymeric networks having minor differences in structure or chemistry. However, some of the elastic constants obtained using this approach were found to be higher than in real macroscopic samples. This can be attributed to both finite-size effect and to the limitations of the static deformation approach to account for dynamic effects. The observed dependence of properties on system size, in this work, can be used to estimate the contribution of large-scale defects and relaxation events into macroscopic properties of the thermosetting materials.
C1 [Shenogina, Natalia B.; Mukhopadhyay, Sharmila M.] Wright State Univ, Dept Mech & Mat Engn, Dayton, OH 45435 USA.
   [Tsige, Mesfin] Univ Akron, Dept Polymer Sci, Akron, OH 44325 USA.
   [Patnaik, Soumya S.] USAF, Prop Directorate, Res Lab, Dayton, OH USA.
RP Shenogina, NB (reprint author), Wright State Univ, Dept Mech & Mat Engn, Dayton, OH 45435 USA.
EM Natalia.Shenogina@wright.edu; mtsige@uakron.edu
FU Low Density Materials Program of Air Force Office of Scientific Research
   [FA9550-09-1-0358]
FX This work was supported by the Low Density Materials Program of the Air
   Force Office of Scientific Research Grant Number: FA9550-09-1-0358. The
   authors gratefully acknowledge Dr. Charles Lee (AFOSR) for valuable
   discussions, and the Air Force Research Laboratory DoD Supercomputing
   Resource Center High Performance Computing for computer time.
NR 48
TC 28
Z9 28
U1 5
U2 70
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0024-9297
J9 MACROMOLECULES
JI Macromolecules
PD JUN 26
PY 2012
VL 45
IS 12
BP 5307
EP 5315
DI 10.1021/ma3007587
PG 9
WC Polymer Science
SC Polymer Science
GA 963YT
UT WOS:000305661600039
ER

PT J
AU Zhou, Z
   Bhamare, S
   Ramakrishnan, G
   Mannava, SR
   Langer, K
   Wen, YH
   Qian, D
   Vasudevan, VK
AF Zhou, Zhong
   Bhamare, Sagar
   Ramakrishnan, Gokul
   Mannava, Seetha R.
   Langer, Kristina
   Wen, Youhai
   Qian, Dong
   Vasudevan, Vijay K.
TI Thermal relaxation of residual stress in laser shock peened Ti-6Al-4V
   alloy
SO SURFACE & COATINGS TECHNOLOGY
LA English
DT Article
DE Ti-6Al-4V; Laser shock peening; Residual stress; Thermal relaxation;
   Finite element analysis
ID HIGH-STRAIN-RATE; ALUMINUM-ALLOY; ELEVATED-TEMPERATURE; FATIGUE
   BEHAVIOR; DEFORMATION; SIMULATION; STABILITY; TITANIUM; MODELS; GROWTH
AB Laser shock peening (LSP) induced residual stresses in Ti-6Al-4V, and their thermal relaxation due to short-term exposure at elevated temperatures are investigated by an integrated modeling/simulation and experimental approach. A rate and temperature-dependent plasticity model in the form of Johnson-Cook (JC) has been employed to represent the nonlinear constitutive behavior under both LSP and thermal loads. By comparing the simulation results with experimental data, model parameters for Ti-6Al-4V are first calibrated and subsequently applied in analyzing the thermal stability of the residual stress in LSP-treated Ti-6Al-4V. The analysis shows that the magnitude of stress relaxation increases with the increase of applied temperature due to material softening. Most of stress relaxation occurs before 10 min to 20 min exposure in this study, and stress distribution becomes more uniform after thermal exposure. An analytical model based on the Zener-Wert-Avrami formula is then developed based on the simulation results. The activation enthalpy of the relaxation process for laser shock peened Ti-6Al-4V is determined to be in the range of 0.71 eV to 1.37 eV. (c) 2012 Elsevier B.V. All rights reserved.
C1 [Zhou, Zhong; Bhamare, Sagar; Ramakrishnan, Gokul; Mannava, Seetha R.; Qian, Dong; Vasudevan, Vijay K.] Univ Cincinnati, Coll Engn & Appl Sci, Sch Dynam Syst, Cincinnati, OH 45221 USA.
   [Langer, Kristina] USAF, Res Lab, RBSM, Dayton, OH 45433 USA.
   [Wen, Youhai] Natl Energy Technol Lab, Albany, OR 97321 USA.
RP Qian, D (reprint author), Univ Cincinnati, Coll Engn & Appl Sci, Sch Dynam Syst, Cincinnati, OH 45221 USA.
EM dong.qian@uc.edu
RI Qian, Dong/B-2326-2008
OI Qian, Dong/0000-0001-9367-0924
FU National Science Foundation [DMR-0706161]; General Dynamics Information
   Technologies (GDIT)/Air Force Research Laboratory/RBSM
   [FA-8650-3446-29-SC-001]; State of Ohio, Department of Development and
   Third Frontier Commission
FX The authors (ZZ, SB, GR, DQ SRM, VKV) would like to thank the National
   Science Foundation (grant # DMR-0706161, Dr. Alan Ardell Program
   Monitor) and General Dynamics Information Technologies (GDIT)/Air Force
   Research Laboratory/RBSM (contract # FA-8650-3446-29-SC-001, Mr. Kevin
   Hunt, Program Monitor) for financial support of this research. We also
   gratefully acknowledge the contribution of the State of Ohio, Department
   of Development and Third Frontier Commission, which provided funding in
   support of "Ohio Center for Laser Shock Processing for Advanced Material
   and Devices" and the experimental and computational equipment in the
   Center that was used in this work. Any opinions, findings, conclusions,
   or recommendations expressed in these documents are those of the
   author(s) and do not necessarily reflect the views of the NSF, GDIT and
   ODOD. This work was also supported in part by an allocation of computing
   time from the Ohio Supercomputer Center.
NR 57
TC 21
Z9 23
U1 5
U2 48
PU ELSEVIER SCIENCE SA
PI LAUSANNE
PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND
SN 0257-8972
J9 SURF COAT TECH
JI Surf. Coat. Technol.
PD JUN 25
PY 2012
VL 206
IS 22
BP 4619
EP 4627
DI 10.1016/j.surfcoat.2012.05.022
PG 9
WC Materials Science, Coatings & Films; Physics, Applied
SC Materials Science; Physics
GA 973HK
UT WOS:000306350600019
ER

PT J
AU Chambreau, SD
   Boatz, JA
   Vaghjiani, GL
   Koh, C
   Kostko, O
   Golan, A
   Leone, SR
AF Chambreau, Steven D.
   Boatz, Jerry A.
   Vaghjiani, Ghanshyam L.
   Koh, Christine
   Kostko, Oleg
   Golan, Arnir
   Leone, Stephen R.
TI Thermal Decomposition Mechanism of 1-Ethyl-3-methylimidazolium Bromide
   Ionic Liquid
SO JOURNAL OF PHYSICAL CHEMISTRY A
LA English
DT Article
ID CORRELATED MOLECULAR CALCULATIONS; TEMPERATURE FUEL-CELLS;
   GAUSSIAN-BASIS SETS; GAS-PHASE; 1-ALKYL-3-METHYLIMIDAZOLIUM BROMIDE;
   ORGANIC-MOLECULES; ORBITAL METHODS; PHOTOIONIZATION; PHOTOELECTRON;
   THERMOCHEMISTRY
AB In order to better understand the volatilization process for ionic liquids, the vapor evolved from heating the ionic liquid 1-ethyl-3-methylimidazolium bromide (EMIM+Br-) was analyzed via tunable vacuum ultraviolet photoionization time-of-flight mass spectrometry (VUV-PI-TOFMS) and thermogravimetric analysis mass spectrometry (TGA-MS). For this ionic liquid, the experimental results indicate that vaporization takes place via the evolution of alkyl bromides and alkylimidazoles, presumably through alkyl abstraction via an S(N)2 type mechanism, and that vaporization of intact ion pairs or the formation of carbenes is negligible. Activation enthalpies for the formation of the methyl and ethyl bromides were evaluated experimentally, Delta H*(CH3Br) = 116.1 +/- 6.6 kJ/mol and Delta H*(CH3CH2Br) = 122.9 +/- 7.2 kJ/mol, and the results are found to be in agreement with calculated values for the SN2 reactions. Comparisons of product photoionization efficiency (PIE) curves with literature data are in good agreement, and ab initio thermodynamics calculations are presented as further evidence for the proposed thermal decomposition mechanism. Estimates for the enthalpy of vaporization of EMIM+Br- and, by comparison, 1-butyl-3-methylimidazolium bromide (BMIM+Br-) from molecular dynamics calculations and their gas phase enthalpies of formation obtained by G4 calculations yield estimates for the ionic liquids' enthalpies of formation in the liquid phase: Delta H-vap(298 K) (EMIM+Br-) = 168 +/- 20 kJ/mol, Delta H-f, gas(298 K) (EMIM+Br-) = 38.4 +/- 10 kJ/mol, Delta H-f,H- (liq)(298 K) (EMIM+Br-) = -130 +/- 22 kJ/mol, Delta H-f,H- gas(298 K) (BMIM+Br-) = -5.6 +/- 10 kJ/mol, and Delta H-f,H- liq(298 K) (BMIM+Br-) = -180 +/- 20 kJ/mol.
C1 [Boatz, Jerry A.; Vaghjiani, Ghanshyam L.] USAF, Res Lab, AFRL RZSP, Propellants Branch,Prop Directorate, Edwards AFB, CA 93524 USA.
   [Chambreau, Steven D.] ERC Inc, Edwards AFB, CA 93524 USA.
   [Koh, Christine; Leone, Stephen R.] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA.
   [Koh, Christine; Leone, Stephen R.] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
   [Kostko, Oleg; Golan, Arnir; Leone, Stephen R.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
RP Vaghjiani, GL (reprint author), USAF, Res Lab, AFRL RZSP, Propellants Branch,Prop Directorate, Edwards AFB, CA 93524 USA.
EM ghanshyam.vaghjiani@edwards.af.mil
RI Kostko, Oleg/B-3822-2009
OI Kostko, Oleg/0000-0003-2068-4991
FU U.S. Air Force Office of Scientific Research [FA9300-06-C-0023,
   FA9550-10-1-0163]; Office of Energy Research, Office of Basic Energy
   Sciences, Chemical Sciences Division of the U.S. Department of Energy
   [DE-AC02-05CH11231]; DoD High Performance Computing Modernization
   Program at the Air Force Research Laboratory; Army Research Laboratory,
   Engineer Research and Development Center; Navy Department of Defense
   Supercomputing Resource Centers (DSRCs)
FX The authors gratefully acknowledge funding from the U.S. Air Force
   Office of Scientific Research for supporting SDC and GLV (Grant No.
   FA9300-06-C-0023), and for CK and SRL (Grant No. FA9550-10-1-0163). This
   work at the ALS was supported by the Director, Office of Energy
   Research, Office of Basic Energy Sciences, Chemical Sciences Division of
   the U.S. Department of Energy under Contract No. DE-AC02-05CH11231
   (A.G., O.K., and S.R.L.). We would like to thank Erik Mitchell for
   obtaining the DSC data, Greg Yandek and Ray Campos for the TGA data, and
   Wasatch Molecular Inc. for the molecular dynamics Delta H<INF>vap</INF>,
   data. This work was supported in part by a grant of computer time from
   the DoD High Performance Computing Modernization Program at the Air
   Force Research Laboratory, Army Research Laboratory, Engineer Research
   and Development Center, and Navy Department of Defense Supercomputing
   Resource Centers (DSRCs).
NR 66
TC 29
Z9 29
U1 5
U2 65
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 JUN 21
PY 2012
VL 116
IS 24
SI SI
BP 5867
EP 5876
DI 10.1021/jp209389d
PG 10
WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical
SC Chemistry; Physics
GA 961DM
UT WOS:000305444100015
PM 22098258
ER

PT J
AU Park, H
   Fellinger, MR
   Lenosky, TJ
   Tipton, WW
   Trinkle, DR
   Rudin, SP
   Woodward, C
   Wilkins, JW
   Hennig, RG
AF Park, Hyoungki
   Fellinger, Michael R.
   Lenosky, Thomas J.
   Tipton, William W.
   Trinkle, Dallas R.
   Rudin, Sven P.
   Woodward, Christopher
   Wilkins, John W.
   Hennig, Richard G.
TI Ab initio based empirical potential used to study the mechanical
   properties of molybdenum
SO PHYSICAL REVIEW B
LA English
DT Article
ID CENTERED-CUBIC METALS; EMBEDDED-ATOM POTENTIALS; BCC TRANSITION-METALS;
   AUGMENTED-WAVE METHOD; KINK-PAIR FORMATION; SCREW DISLOCATIONS;
   ATOMISTIC SIMULATIONS; MOLECULAR-DYNAMICS; POINT-DEFECTS; FLOW-STRESS
AB Density-functional theory energies, forces, and elastic constants determine the parametrization of an empirical, modified embedded-atom method potential for molybdenum. The accuracy and transferability of the potential are verified by comparison to experimental and density-functional data for point defects, phonons, thermal expansion, surface and stacking fault energies, and ideal shear strength. Searching the energy landscape predicted by the potential using a genetic algorithm verifies that it reproduces not only the correct bcc ground state of molybdenum but also all low-energy metastable phases. The potential is also applicable to the study of plastic deformation and used to compute energies, core structures, and Peierls stresses of screw and edge dislocations.
C1 [Park, Hyoungki; Fellinger, Michael R.; Wilkins, John W.; Hennig, Richard G.] Ohio State Univ, Dept Phys, Columbus, OH 43210 USA.
   [Tipton, William W.; Hennig, Richard G.] Cornell Univ, Dept Mat Sci & Engn, Ithaca, NY 14853 USA.
   [Trinkle, Dallas R.] Univ Illinois, Dept Mat Sci & Engn, Urbana, IL 61801 USA.
   [Rudin, Sven P.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
   [Woodward, Christopher] USAF, Mat & Mfg Directorate, Res Lab, Dayton, OH 45433 USA.
RP Park, H (reprint author), Ohio State Univ, Dept Phys, 174 W 18th Ave, Columbus, OH 43210 USA.
EM hkpark@mps.ohio-state.edu
RI Hennig, Richard/A-2978-2008
OI Hennig, Richard/0000-0003-4933-7686
FU US Department of Energy [DE-FG02-99ER45795, DE-FG05-08OR23339,
   DE-AC52-06NA25396]; National Science Foundation [EAR-0703226]; Office of
   Science of the US Department of Energy [DE-AC02-05CH11231]; National
   Center for Supercomputing Applications [DMR050036]; Ohio Supercompute
   Center
FX The work at the Ohio State University was supported by the US Department
   of Energy under Contract No. DE-FG02-99ER45795. The work at Cornell
   University was supported by the US Department of Energy under Contract
   No. DE-FG05-08OR23339 and the National Science Foundation under Contract
   No. EAR-0703226. The work at Los Alamos National Laboratory was
   supported by the US Department of Energy under Contract No.
   DE-AC52-06NA25396. This research used computational resources provided
   by the National Energy Research Scientific Computing Center, supported
   by the Office of Science of the US Department of Energy
   (DE-AC02-05CH11231), the National Center for Supercomputing Applications
   under Grant No. DMR050036, and the Ohio Supercompute Center.
NR 78
TC 18
Z9 18
U1 3
U2 46
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 JUN 21
PY 2012
VL 85
IS 21
AR 214121
DI 10.1103/PhysRevB.85.214121
PG 10
WC Physics, Condensed Matter
SC Physics
GA 962GQ
UT WOS:000305530700001
ER

PT J
AU Hsu, PS
   Kulatilaka, WD
   Jiang, NB
   Gord, JR
   Roy, S
AF Hsu, Paul S.
   Kulatilaka, Waruna D.
   Jiang, Naibo
   Gord, James R.
   Roy, Sukesh
TI Investigation of optical fibers for gas-phase, ultraviolet
   laser-induced-fluorescence (UV-LIF) spectroscopy
SO APPLIED OPTICS
LA English
DT Article
ID FUSED-SILICA FIBERS; TRANSMISSION PROPERTIES; NITRIC-OXIDE; FLAMES;
   DIAGNOSTICS; DEPENDENCE; RADIATION; DAMAGE; GLASS; TEMPERATURE
AB We investigate the feasibility of transmitting high-power, ultraviolet (UV) laser pulses through long optical fibers for laser-induced-fluorescence (LIF) spectroscopy of the hydroxyl radical (OH) and nitric oxide (NO) in reacting and non-reacting flows. The fundamental transmission characteristics of nanosecond (ns)-duration laser pulses are studied at wavelengths of 283 nm (OH excitation) and 226 nm (NO excitation) for state-of-the-art, commercial UV-grade fibers. It is verified experimentally that selected fibers are capable of transmitting sufficient UV pulse energy for single-laser-shot LIF measurements. The homogeneous output-beam profile resulting from propagation through a long multimode fiber is ideal for two-dimensional planar-LIF (PLIF) imaging. A fiber-coupled UV-LIF system employing a 6 m long launch fiber is developed for probing OH and NO. Single-laser-shot OH- and NO-PLIF images are obtained in a premixed flame and in a room-temperature NO-seeded N-2 jet, respectively. Effects on LIF excitation lineshapes resulting from delivering intense UV laser pulses through long fibers are also investigated. Proof-of-concept measurements demonstrated in the current work show significant promise for fiber-coupled UV-LIF spectroscopy in harsh diagnostic environments such as gas-turbine test beds. (C) 2012 Optical Society of America
C1 [Hsu, Paul S.; Kulatilaka, Waruna D.; Jiang, Naibo; Roy, Sukesh] Spectral Energies LLC, Dayton, OH 45431 USA.
   [Gord, James R.] USAF, Res Lab, Prop Directorate, Wright Patterson AFB, OH 45433 USA.
RP Roy, S (reprint author), Spectral Energies LLC, 5100 Springfield St,Suite 301, Dayton, OH 45431 USA.
EM sroy@spectralenergies.com
FU internal R&D source of Spectral Energies, LLC; United States Air Force
   Office of Scientific Research (AFOSR); United States Air Force Research
   Laboratory [FA8650-10-C-2008]
FX The authors gratefully acknowledge useful discussions with Drs. Anil
   Patnaik and Hans Stauffer. Funding for this research was provided by the
   internal R&D source of Spectral Energies, LLC, by the United States Air
   Force Office of Scientific Research (AFOSR, Dr. Chiping Li, Program
   Manager) and the United States Air Force Research Laboratory under
   Contract No. FA8650-10-C-2008 (Ms. Amy Lynch, Program Manager).
NR 49
TC 7
Z9 7
U1 1
U2 16
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 20
PY 2012
VL 51
IS 18
BP 4047
EP 4057
DI 10.1364/AO.51.004047
PG 11
WC Optics
SC Optics
GA 970AH
UT WOS:000306100000010
PM 22722279
ER

PT J
AU Sivapalan, ST
   Vella, JH
   Yang, TK
   Dalton, MJ
   Swiger, RN
   Haley, JE
   Cooper, TM
   Urbas, AM
   Tan, LS
   Murphy, CJ
AF Sivapalan, Sean T.
   Vella, Jarrett H.
   Yang, Timothy K.
   Dalton, Matthew J.
   Swiger, Rachel N.
   Haley, Joy E.
   Cooper, Thomas M.
   Urbas, Augustine M.
   Tan, Loon-Seng
   Murphy, Catherine J.
TI Plasmonic Enhancement of the Two Photon Absorption Cross Section of an
   Organic Chromophore Using Polyelectrolyte-Coated Gold Nanorods
SO LANGMUIR
LA English
DT Article
ID RAMAN-SCATTERING; FLUORESCENCE MICROSCOPY; OPTICAL-PROPERTIES;
   NANOPARTICLES; FILMS; MOLECULES; MONOLAYERS; PARTICLES; STORAGE; GROWTH
AB The effect of plasmonic enhancement on the two-photon absorption cross section of organic chromophores attached to polyelectrolyte-coated gold nanorods was investigated. The magnitudes of such enhancements were confirmed using single and two photon excitations of the chromophore molecules bound to polyelectrolyte-coated gold nanorods. By synthesizing two-, four-, six-, and eight-polyelectrolyte layer coated nanorods of a particular aspect ratio, the distance dependence of the evanescent electromagnetic field on molecular two-photon absorption was observed. Enhancements of 40-fold were observed for the chromophores nearest to the surface.
C1 [Sivapalan, Sean T.; Murphy, Catherine J.] Univ Illinois, Dept Mat Sci & Engn, Urbana, IL 61801 USA.
   [Yang, Timothy K.; Murphy, Catherine J.] Univ Illinois, Dept Chem, Urbana, IL 61801 USA.
   [Vella, Jarrett H.; Dalton, Matthew J.; Swiger, Rachel N.; Haley, Joy E.; Cooper, Thomas M.; Urbas, Augustine M.; Tan, Loon-Seng] USAF, Mat & Mfg Directorate, Res Lab, Wright Patterson AFB, OH 45433 USA.
   [Vella, Jarrett H.; Dalton, Matthew J.] Gen Dynam Informat Technol, Dayton, OH 45431 USA.
   [Swiger, Rachel N.] SW Ohio Council Higher Educ, Dayton, OH 45420 USA.
RP Murphy, CJ (reprint author), Univ Illinois, Dept Mat Sci & Engn, Urbana, IL 61801 USA.
EM murphycj@illinois.edu
RI Tan, Loon-Seng/F-6985-2012; 
OI Tan, Loon-Seng/0000-0002-2134-9290; Murphy,
   Catherine/0000-0001-7066-5575
FU AFOSR [FA 9550-09-1-0246]
FX This work was supported by AFOSR Grant Number FA 9550-09-1-0246. The
   authors thank the Roy J. Carver Biotechnology Metabolomics Center at the
   University of Illinois at Urbana Champaign for mass spectrometry
   analysis.
NR 36
TC 30
Z9 30
U1 1
U2 37
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0743-7463
J9 LANGMUIR
JI Langmuir
PD JUN 19
PY 2012
VL 28
IS 24
BP 9147
EP 9154
DI 10.1021/la300762k
PG 8
WC Chemistry, Multidisciplinary; Chemistry, Physical; Materials Science,
   Multidisciplinary
SC Chemistry; Materials Science
GA 959NY
UT WOS:000305320700041
PM 22500968
ER

PT J
AU Lucas, MS
   Wilks, GB
   Mauger, L
   Munoz, JA
   Senkov, ON
   Michel, E
   Horwath, J
   Semiatin, SL
   Stone, MB
   Abernathy, DL
   Karapetrova, E
AF Lucas, M. S.
   Wilks, G. B.
   Mauger, L.
   Munoz, J. A.
   Senkov, O. N.
   Michel, E.
   Horwath, J.
   Semiatin, S. L.
   Stone, M. B.
   Abernathy, D. L.
   Karapetrova, E.
TI Absence of long-range chemical ordering in equimolar FeCoCrNi
SO APPLIED PHYSICS LETTERS
LA English
DT Article
ID HIGH-ENTROPY ALLOY; NI PHASE-DIAGRAM; SCATTERING; SYSTEM; ELEMENTS
AB Equimolar FeCoCrNi alloys have been the topic of recent research as "high-entropy alloys," where the name is derived from the high configurational entropy of mixing for a random solid solution. Despite their name, no systematic study of ordering in this alloy system has been performed to date. Here, we present results from anomalous x-ray scattering and neutron scattering on quenched and annealed samples. An alloy of FeNi3 was prepared in the same manner to act as a control. Evidence of long-range chemical ordering is clearly observed in the annealed FeNi3 sample from both experimental techniques. The FeCoCrNi sample given the same heat treatment lacks long-range chemical order. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4730327]
C1 [Lucas, M. S.; Wilks, G. B.; Senkov, O. N.; Michel, E.; Horwath, J.; Semiatin, S. L.] USAF, Res Lab, Wright Patterson AFB, OH 45433 USA.
   [Lucas, M. S.] UTC Inc, Dayton, OH 45432 USA.
   [Wilks, G. B.; Senkov, O. N.] UES Inc, Dayton, OH 45432 USA.
   [Mauger, L.; Munoz, J. A.] CALTECH, WM Keck Lab, Pasadena, CA 91125 USA.
   [Michel, E.] Wright State Univ, Dayton, OH 45435 USA.
   [Stone, M. B.; Abernathy, D. L.] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
   [Karapetrova, E.] Argonne Natl Lab, Argonne, IL 60439 USA.
RP Lucas, MS (reprint author), USAF, Res Lab, Wright Patterson AFB, OH 45433 USA.
RI Munoz, Jorge/C-8427-2011; Stone, Matthew/G-3275-2011; Abernathy,
   Douglas/A-3038-2012; Senkov, Oleg/C-7197-2012; BL18, ARCS/A-3000-2012;
   SEMIATIN, SHELDON/E-7264-2017
OI Stone, Matthew/0000-0001-7884-9715; Abernathy,
   Douglas/0000-0002-3533-003X; Senkov, Oleg/0000-0001-5587-415X; 
FU U.S. Department of Energy, Office of Science, Office of Basic Energy
   Sciences [DE-AC02-06CH11357]; Scientific User Facilities Division,
   Office of Basic Energy Sciences, U.S. Department of Energy; NSF
   [DMR-0520547]
FX Use of the Advanced Photon Source was supported by the U.S. Department
   of Energy, Office of Science, Office of Basic Energy Sciences, under
   Contract No. DE-AC02-06CH11357. A portion of this research at Oak Ridge
   National Laboratory's Spallation Neutron Source was sponsored by the
   Scientific User Facilities Division, Office of Basic Energy Sciences,
   U.S. Department of Energy. This work benefitted from DANSE software
   developed under NSF Grant No. DMR-0520547.
NR 24
TC 47
Z9 47
U1 9
U2 61
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 18
PY 2012
VL 100
IS 25
AR 251907
DI 10.1063/1.4730327
PG 4
WC Physics, Applied
SC Physics
GA 964EL
UT WOS:000305676400027
ER

PT J
AU Park, J
   Mitchel, WC
   Elhamri, S
   Back, TC
AF Park, Jeongho
   Mitchel, W. C.
   Elhamri, Said
   Back, Tyson C.
TI Effect of in-situ oxygen on the electronic properties of graphene grown
   by carbon molecular beam epitaxy (vol 100, 133107, 2012)
SO APPLIED PHYSICS LETTERS
LA English
DT Correction
C1 [Park, Jeongho; Mitchel, W. C.; Back, Tyson C.] USAF, Res Lab, Mat & Mfg Directorate AFRL RXPS, Wright Patterson AFB, OH 45433 USA.
   [Elhamri, Said] Univ Dayton, Dept Phys, Dayton, OH 45469 USA.
RP Park, J (reprint author), USAF, Res Lab, Mat & Mfg Directorate AFRL RXPS, Wright Patterson AFB, OH 45433 USA.
EM jeongho.park@wpafb.af.mil
NR 1
TC 0
Z9 0
U1 1
U2 14
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 18
PY 2012
VL 100
IS 25
AR 259902
DI 10.1063/1.4730980
PG 1
WC Physics, Applied
SC Physics
GA 964EL
UT WOS:000305676400115
ER

PT J
AU Telesca, D
   Nie, Y
   Budnick, JI
   Wells, BO
   Sinkovic, B
AF Telesca, D.
   Nie, Y.
   Budnick, J. I.
   Wells, B. O.
   Sinkovic, B.
TI Impact of valence states on the superconductivity of iron telluride and
   iron selenide films with incorporated oxygen
SO PHYSICAL REVIEW B
LA English
DT Article
ID HIGH-TEMPERATURE SUPERCONDUCTIVITY; PULSED-LASER DEPOSITION;
   SINGLE-CRYSTALS; ELECTRONIC-STRUCTURE; OXIDE-FILMS; FESE; XPS;
   CHALCOGENIDES; SPECTROSCOPY; FABRICATION
AB We report on the local electronic structure of oxygen incorporated FeTe and FeSe films and how this relates to superconductivity observed in these films. In the case of FeTe, initially grown films are measured to be nonsuperconducting, but become superconducting following oxygen incorporation. In FeSe the opposite happens; initially grown films are measured to be superconducting, but experience a quenching of superconductivity following oxygen incorporation. X-ray photoemission and total fluorescence yield (TFY) x-ray absorption experiments show that oxygen incorporation changes the initial Fe valence state in both the as grown FeTe and FeSe films to mainly Fe3+ in the oxygen incorporated films. In contrast we observe that while Te moves to a mixed Te-0/Te4+ valence state, the Se always remains Se-0. This work highlights how different responses of the electronic structure by the respective chalcogenides to oxidation could be related to the mechanisms which are inducing superconductivity in FeTe and quenching superconductivity in FeSe.
C1 [Telesca, D.; Nie, Y.; Budnick, J. I.; Wells, B. O.; Sinkovic, B.] Univ Connecticut, Dept Phys, Storrs, CT 06269 USA.
   [Nie, Y.; Budnick, J. I.; Wells, B. O.] Univ Connecticut, Inst Mat Sci, Storrs, CT 06269 USA.
   [Telesca, D.] USAF, Space Vehicles Directorate, Res Lab, Kirtland AFB, NM 87117 USA.
RP Telesca, D (reprint author), Univ Connecticut, Dept Phys, Storrs, CT 06269 USA.
RI Nie, Yuefeng/L-8071-2013; Nie, Yuefeng/A-1595-2013
OI Nie, Yuefeng/0000-0002-3449-5393; Nie, Yuefeng/0000-0002-3449-5393
FU US Department of Energy [DE-FG02-00ER45801]; Office of Science, Office
   of Basic Energy Sciences, US Department of Energy [DEAC02-98CH10886]
FX We thank E. Negusse for assistance during absorption measurements at the
   U4B beam line. This work is supported by the US Department of Energy
   through Contract No. DE-FG02-00ER45801. Use of the National Synchrotron
   Light Source, Brookhaven National Laboratory was supported by the Office
   of Science, Office of Basic Energy Sciences, US Department of Energy
   under Contract No. DEAC02-98CH10886.
NR 34
TC 12
Z9 12
U1 3
U2 47
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 18
PY 2012
VL 85
IS 21
AR 214517
DI 10.1103/PhysRevB.85.214517
PG 6
WC Physics, Condensed Matter
SC Physics
GA 962GG
UT WOS:000305529700005
ER

PT J
AU Cimpoiasu, E
   Sandu, V
   Levin, GA
   Simpson, A
   Lashmore, D
AF Cimpoiasu, E.
   Sandu, V.
   Levin, G. A.
   Simpson, A.
   Lashmore, D.
TI Angular magnetoresistance of stretched carbon nanotube sheets
SO JOURNAL OF APPLIED PHYSICS
LA English
DT Article
AB We studied the anisotropic properties of mechanically stretched bulk carbon nanotube sheets using magnetoresistance (MR) measurements in magnetic fields applied under different orientations with respect to the stretching direction. The stretching direction was either parallel or perpendicular to the direction of the electric current. The magnetic field was rotated either in-the-plane or out-of-the-plane of the sheets. We found that the angular dependence of the MR is a superposition of two terms, one with twofold symmetry and the other one with fourfold symmetry. We also found that the field-dependence of the MR is composed of two terms, one positive and one negative, whose magnitudes are largest when the field is parallel with the stretching direction. If the sheets are treated with nitric acid, the positive term is removed and the MR is smallest when the field is aligned with the magnetic field. We attribute these anisotropic features to magnetoelastic effects induced by the coupling between the magnetic catalyst nanoparticles, the magnetic field, and the network of nanotubes. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4729538]
C1 [Cimpoiasu, E.] USN Acad, Dept Phys, Annapolis, MD 21402 USA.
   [Sandu, V.] Natl Inst Mat Phys, Bucharest, Romania.
   [Levin, G. A.] USAF, Prop Directorate, Res Lab, Wright Patterson AFB, OH 45433 USA.
   [Simpson, A.; Lashmore, D.] Nanocomp Technol Inc, Concord, NH 03301 USA.
RP Cimpoiasu, E (reprint author), USN Acad, Dept Phys, Annapolis, MD 21402 USA.
FU US Naval Academy Research Council
FX The work at USNA was supported by the US Naval Academy Research Council.
   The authors would like to thank Nanocomp Technologies for providing the
   samples, and M. White and B. White for the SEM pictures and useful
   discussions.
NR 27
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U1 1
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 0021-8979
J9 J APPL PHYS
JI J. Appl. Phys.
PD JUN 15
PY 2012
VL 111
IS 12
AR 123721
DI 10.1063/1.4729538
PG 10
WC Physics, Applied
SC Physics
GA 966IV
UT WOS:000305832100073
ER

PT J
AU Cortez, R
   Slocik, JM
   Van Nostrand, JE
   Halas, NJ
   Naik, RR
AF Cortez, Rebecca
   Slocik, Joseph M.
   Van Nostrand, Joseph E.
   Halas, Naomi J.
   Naik, Rajesh R.
TI Electrical conductivity of cationized ferritin decorated gold nanoshells
SO JOURNAL OF APPLIED PHYSICS
LA English
DT Article
ID THERAPY
AB We report on a novel method of controlling the resistance of nanodimensional, gold-coated SiO2 nanoparticles by utilizing biomolecules chemisorbed to the nanoshell surface. Local electronic transport properties of gold-coated nanoshells were measured using scanning conductance microscopy. These results were compared to transport properties of identical gold nanoshells biofunctionalized with cationized ferritin protein both with and without an iron oxide core (apoferritin). Measured resistances were on the order of mega-ohms. White light irradiation effects on transport properties were also explored. The results suggest that the light energy influences the nanoshells' conductivity. A mechanism for assembly of gold nanoshells with cationized ferritin or cationized apoferritin is proposed to explain the resistivity dependence on irradiation. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4729800]
C1 [Cortez, Rebecca] Union Coll, Dept Mech Engn, Schenectady, NY 12308 USA.
   [Slocik, Joseph M.; Naik, Rajesh R.] USAF, Res Lab, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA.
   [Van Nostrand, Joseph E.] USAF, Res Lab, Informat Directorate, Rome, NY 13441 USA.
   [Halas, Naomi J.] Rice Univ, Dept Elect & Comp Engn, Houston, TX 77005 USA.
RP Cortez, R (reprint author), Union Coll, Dept Mech Engn, Schenectady, NY 12308 USA.
EM cortezr@union.edu
RI Halas, Naomi/D-2935-2011
FU National Science Foundation [0820032, 0824341]
FX The authors would like to thank Felica Tam of Rice University for her
   assistance in synthesizing the gold nano-shells. This material is based
   upon work supported by the National Science Foundation under Grant Nos.
   0820032 and 0824341.
NR 25
TC 1
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U1 1
U2 18
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 JUN 15
PY 2012
VL 111
IS 12
AR 124311
DI 10.1063/1.4729800
PG 5
WC Physics, Applied
SC Physics
GA 966IV
UT WOS:000305832100120
ER

PT J
AU Senkov, ON
   Cheng, YQ
   Miracle, DB
   Barney, ER
   Hannon, AC
   Woodward, CF
AF Senkov, O. N.
   Cheng, Y. Q.
   Miracle, D. B.
   Barney, E. R.
   Hannon, A. C.
   Woodward, C. F.
TI Atomic structure of Ca40+XMg25Cu35-X metallic glasses
SO JOURNAL OF APPLIED PHYSICS
LA English
DT Article
ID CA-MG-ZN; AUGMENTED-WAVE METHOD; MEDIUM-RANGE ORDER; LIQUID CU-MG;
   FORMING ABILITY; THERMAL-STABILITY; ALLOYS; PACKING; MODEL; PRINCIPLES
AB The atomic structures of four Ca40+XMg25Cu35-X (X = 0, 5, 10, and 20 at. %) ternary metallic glasses have been determined using a synergistic combination of neutron diffraction, ab initio molecular dynamics (MD) simulation, and constrained reverse Monte Carlo modeling. It is described as close-packing of efficiently packed Cu-centered clusters that have Ca, Mg, and Cu atoms in the first coordination shell. The close-packed arrangement of the clusters provides a characteristic medium range order in these alloys. An average coordination number (CN) of 10 (with about 5-7 Ca, 2-3 Mg, and 1-2 Cu atoms) is most common for the Cu-centered clusters. The average coordination numbers around Mg and Ca are 12-13 (similar to 6-8 Ca, 3Mg, and 1-4 Cu) and 13-15 (7-9 Ca, 3-4 Mg, and 2-5 Cu), respectively, and they are composition dependent. Strong interaction of Cu with Mg and Ca results in pair bond shortening. Icosahedral short range order does not dominate in these amorphous alloys, although polytetrahedral packing and five-fold bond configurations resulting in pentagonal bi-pyramids have been found to be the most common nearest atom configurations. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4729450]
C1 [Senkov, O. N.; Miracle, D. B.; Woodward, C. F.] USAF, Res Lab, Wright Patterson AFB, OH 45433 USA.
   [Cheng, Y. Q.] Johns Hopkins Univ, Dept Mat Sci & Engn, Baltimore, MD 21218 USA.
   [Cheng, Y. Q.] Oak Ridge Natl Lab, Chem & Engn Mat Div, Oak Ridge, TN 37831 USA.
   [Barney, E. R.; Hannon, A. C.] Rutherford Appleton Lab, ISIS Facil, Didcot OX11 0QX, Oxon, England.
   [Barney, E. R.] Univ Nottingham, Fac Engn, Nottingham NG7 2RD, England.
RP Senkov, ON (reprint author), USAF, Res Lab, Wright Patterson AFB, OH 45433 USA.
EM oleg.senkov@wpafb.af.mil
RI Cheng, Yongqiang/F-6567-2010; Senkov, Oleg/C-7197-2012; 
OI Senkov, Oleg/0000-0001-5587-415X; Barney, Emma/0000-0002-8674-1840;
   Hannon, Alex/0000-0001-5914-1295
FU Science and Technology Facilities Council [RB 820097]; Air Force Office
   of Scientific Research [10RX14COR]; Air Force through UES, Inc., Dayton,
   Ohio [FA8650-10-D-5226]; National Science Foundation [NSF-DMR 0904188];
   Scientific User Facilities Division, Office of Basic Energy Sciences, US
   Department of Energy
FX Extensive discussions with E. Ma, A. Kolesnikov, and W. Dmowski and
   technical support from J. M. Scott in conducting neutron experiments are
   recognized. The neutron experiments at the ISIS Pulsed Neutron and Muon
   Source were supported by a beamtime allocation (RB 820097) from the
   Science and Technology Facilities Council. Work at the Air Force
   Research Laboratory was supported through the Air Force Office of
   Scientific Research (M. Berman, Program Manager, Grant Number 10RX14COR)
   and the Air Force under on-site contract No. FA8650-10-D-5226 conducted
   through UES, Inc., Dayton, Ohio. Work at John Hopkins University was
   supported through the National Science Foundation under Contract No.
   NSF-DMR 0904188. Work at Oak Ridge National Laboratory was supported by
   the Scientific User Facilities Division, Office of Basic Energy
   Sciences, US Department of Energy.
NR 72
TC 12
Z9 12
U1 1
U2 30
PU AMER INST PHYSICS
PI MELVILLE
PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA
SN 0021-8979
EI 1089-7550
J9 J APPL PHYS
JI J. Appl. Phys.
PD JUN 15
PY 2012
VL 111
IS 12
AR 123515
DI 10.1063/1.4729450
PG 19
WC Physics, Applied
SC Physics
GA 966IV
UT WOS:000305832100038
ER

PT J
AU Mudaliar, S
AF Mudaliar, Saba
TI Coupling of volume and surface effects in scattering, and the "splitting
   rule"
SO OPTICS LETTERS
LA English
DT Article
ID ROUGH SURFACES; MEDIA
AB Multiple scattering processes in a heterogeneous medium with rough boundaries lead inevitably to coupling of volume and surface effects. Our study of this problem using a statistical wave theory shows the nature of this coupling, brings forth the issues involved, and gives the approximations required to separate volume and surface effects. We hence understand that, only under rather special conditions, these two effects can be decoupled according to the "splitting rule" suggested by Guerin and Sentenac [J. Opt. Soc. Am. A 24, 385 (2007)]. One situation where the two effects approximately separate is when the boundary roughness is small. In this case our results are in agreement with [J. Opt. Soc. Am. A 24, 385 (2007)] and [Waves Random Media 7, 303 (1997)]. Apart from this special situation, we find that volume and boundary effects always get coupled. Therefore, it is apparent that a splitting rule is a special property rather than a general law. (C) 2012 Optical Society of America
C1 USAF, Res Lab, Sensors Directorate, Wright Patterson AFB, OH 45433 USA.
RP Mudaliar, S (reprint author), USAF, Res Lab, Sensors Directorate, Wright Patterson AFB, OH 45433 USA.
FU U. S. Air Force Office of Scientific Research
FX The author thanks the U. S. Air Force Office of Scientific Research for
   support.
NR 11
TC 0
Z9 0
U1 1
U2 4
PU OPTICAL SOC AMER
PI WASHINGTON
PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA
SN 0146-9592
J9 OPT LETT
JI Opt. Lett.
PD JUN 15
PY 2012
VL 37
IS 12
BP 2286
EP 2288
PG 3
WC Optics
SC Optics
GA 960SO
UT WOS:000305410500039
PM 22739883
ER

PT J
AU Li, YNA
   Urbas, A
   Li, Q
AF Li, Yannian
   Urbas, Augustine
   Li, Quan
TI Reversible Light-Directed Red, Green, and Blue Reflection with Thermal
   Stability Enabled by a Self-Organized Helical Superstructure
SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Article
ID NEMATIC LIQUID-CRYSTALS; CIRCULAR-DICHROISM SPECTROSCOPY; CHIRAL
   MOLECULAR SWITCHES; PHOTON-MODE; CONFORMATIONAL-ANALYSIS; CHOLESTERIC
   INDUCTION; TWISTING POWER; DIARYLETHENE; 1,1'-BINAPHTHYLS; MESOPHASE
AB Adding external, remote, and dynamic control to self-organized superstructures with desired properties is an important leap necessary in leveraging the fascinating molecular subsystems for employment in applications. Here two novel light-driven dithienylethene chiral molecular switches possessing remarkable changes in helical twisting power during photoisomerization as well as very high helical twisting powers were found to experience photochemically reversible isomerization with thermal stability in both isotropic organic solvents and anisotropic liquid crystal media. When doped into a commercially available achiral liquid crystal host, the chiral switch was able to either immediately induce an optically tunable helical superstructure or retain an achiral photoresponsive liquid crystal phase whose helical superstructure was induced and tuned reversibly upon light irradiation. Moreover, reversible light-directed red, green, and blue reflection colors with thermal stability in a single thin film were demonstrated.
C1 [Li, Yannian; Li, Quan] Kent State Univ, Inst Liquid Crystal, Kent, OH 44242 USA.
   [Urbas, Augustine] USAF, Res Lab WPAFB, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA.
RP Li, Q (reprint author), Kent State Univ, Inst Liquid Crystal, Kent, OH 44242 USA.
EM qli1@kent.edu
RI Li, Yannian/B-7000-2012
FU Air Force Office of Scientific Research (AFOSR) [FA9550-09-1-0193,
   FA9950-09-1-0254]
FX This work is supported by the Air Force Office of Scientific Research
   (AFOSR FA9550-09-1-0193 and FA9950-09-1-0254).
NR 45
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U1 3
U2 64
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 JUN 13
PY 2012
VL 134
IS 23
BP 9573
EP 9576
DI 10.1021/ja302772z
PG 4
WC Chemistry, Multidisciplinary
SC Chemistry
GA 956RW
UT WOS:000305107800010
PM 22630604
ER

PT J
AU Kim, SK
   Burris, DR
   Bryant-Genevier, J
   Gorder, KA
   Dettenmaier, EM
   Zellers, ET
AF Kim, Sun Kyu
   Burris, David R.
   Bryant-Genevier, Jonathan
   Gorder, Kyle A.
   Dettenmaier, Erik M.
   Zellers, Edward T.
TI Microfabricated Gas Chromatograph for On-Site Determinations of TCE in
   Indoor Air Arising from Vapor Intrusion. 2. Spatial/Temporal Monitoring
SO ENVIRONMENTAL SCIENCE & TECHNOLOGY
LA English
DT Article
AB We demonstrate the use of two prototype Si-microfabricated gas chromatographs (mu GC) for continuous, short-term measurements of indoor trichloroethylene (TCE) vapor concentrations related to the investigation of TCE vapor intrusion (VI) in two houses. In the first house, with documented TCE VI, temporal variations in TCE air concentrations were monitored continuously for up to 48 h near the primary VI entry location under different levels of induced differential pressure (relative to the subslab). Concentrations ranged from 0.23 to 27 ppb by volume (1.2-150 mu g/m(3)), and concentration trends agreed closely with those determined from concurrent reference samples. The sensitivity and temporal resolution of the measurements were sufficiently high to detect transient fluctuations in concentration resulting from short-term changes in variables affecting the extent of VI. Spatial monitoring showed a decreasing TCE concentration gradient with increasing distance from the primary VI entry location. In the second house, with no TCE VI, spatial profiles derived from the mu GC prototype data revealed an intentionally hidden source of TCE within a closet, demonstrating the capability for locating non-VI sources. Concentrations measured in this house ranged from 0.51 to 56 ppb (2.7-300 mu g/m(3)), in good agreement with reference method values. This first field demonstration of pGC technology for automated, near-real-time, selective VOC monitoring at low- or subppb levels augurs well for its use in short- and long-term on-site analysis of indoor air in support of VI assessments.
C1 [Kim, Sun Kyu; Bryant-Genevier, Jonathan; Zellers, Edward T.] Univ Michigan, Dept Environm Hlth Sci, Ann Arbor, MI 48109 USA.
   [Kim, Sun Kyu; Bryant-Genevier, Jonathan; Zellers, Edward T.] Univ Michigan, Ctr Wireless Integrated MicroSensing & Syst WIMS2, Ann Arbor, MI 48109 USA.
   [Burris, David R.] Integrated Sci & Technol Inc, Panama City, FL 32401 USA.
   [Zellers, Edward T.] Univ Michigan, Dept Chem, Ann Arbor, MI 48109 USA.
   [Gorder, Kyle A.] 75 CEG CEVR, Hill AFB, UT 84056 USA.
RP Zellers, ET (reprint author), Univ Michigan, Dept Environm Hlth Sci, Ann Arbor, MI 48109 USA.
EM ezellers@umich.edu
FU Department of Defense [ER-200702]; IST; National Science Foundation
FX We gratefully acknowledge the invaluable assistance of Dr. Hungwei
   Chang, Thitiporn Sukaew, Lindsay Wright, Gustavo Serrano, Dr. Forest
   Bohrer, Katharine Beach, Brendan Casey, Robert Gordenker, and Brad
   Richert from the University of Michigan; Jim Reisinger and David Wolf
   from Integrated Science and Technology, Inc. (IST); and Drs. Paul
   Johnson and Paul Dahlen from the Arizona State University. This work was
   supported by the Department of Defense Environmental Security Technology
   Certification Program (ESTCP; ER-200702) through a subcontract with IST.
   Devices used in the mu GC prototypes were fabricated in the Lurie
   Nanofabrication Facility, a member of the National Nanotechnology
   Infrastructure Network, which is supported by the National Science
   Foundation.
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Z9 12
U1 1
U2 19
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0013-936X
J9 ENVIRON SCI TECHNOL
JI Environ. Sci. Technol.
PD JUN 5
PY 2012
VL 46
IS 11
BP 6073
EP 6080
DI 10.1021/es204625w
PG 8
WC Engineering, Environmental; Environmental Sciences
SC Engineering; Environmental Sciences & Ecology
GA 952HJ
UT WOS:000304783000057
PM 22616747
ER

PT J
AU Lee, KM
   Bunning, TJ
   White, TJ
AF Lee, Kyung Min
   Bunning, Timothy J.
   White, Timothy J.
TI Autonomous, Hands-Free Shape Memory in Glassy, Liquid Crystalline
   Polymer Networks
SO ADVANCED MATERIALS
LA English
DT Article
DE liquid crystals; shape memory; polymer networks
ID LIGHT; ACTUATORS; FIBERS; MOTION
C1 [Lee, Kyung Min; Bunning, Timothy J.; White, Timothy J.] USAF, Res Lab, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA.
   [Lee, Kyung Min] Azimuth Corp, Dayton, OH 45432 USA.
RP White, TJ (reprint author), USAF, Res Lab, Mat & Mfg Directorate, 3005 Hobson Way Ste 1, Wright Patterson AFB, OH 45433 USA.
EM Timothy.White2@wpafb.af.mil
RI White, Timothy/D-4392-2012
FU Air Force Office of Scientific Research; Materials and Manufacturing
   Directorate of the Air Force Research Laboratory
FX This work was financially supported by the Air Force Office of
   Scientific Research as well as the Materials and Manufacturing
   Directorate of the Air Force Research Laboratory. The authors
   acknowledge insightful discussions with Matthew L. Smith.
NR 35
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U1 7
U2 99
PU WILEY-V C H VERLAG GMBH
PI WEINHEIM
PA BOSCHSTRASSE 12, D-69469 WEINHEIM, GERMANY
SN 0935-9648
J9 ADV MATER
JI Adv. Mater.
PD JUN 5
PY 2012
VL 24
IS 21
BP 2839
EP 2843
DI 10.1002/adma.201200374
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 949SH
UT WOS:000304595700003
PM 22535595
ER

PT J
AU Cornella, BM
   Gimelshein, SF
   Shneider, MN
   Lilly, TC
   Ketsdever, AD
AF Cornella, Barry M.
   Gimelshein, Sergey F.
   Shneider, Mikhail N.
   Lilly, Taylor C.
   Ketsdever, Andrew D.
TI Experimental and numerical analysis of narrowband coherent
   Rayleigh-Brillouin scattering in atomic and molecular species
SO OPTICS EXPRESS
LA English
DT Article
ID MONTE-CARLO-SIMULATION; GAS-PHASE DIAGNOSTICS; VIBRATIONAL RELAXATION;
   DIATOMIC GASES; POLYATOMIC-GAS; TEMPERATURE; VISCOSITY
AB Coherent Rayleigh-Brillouin scattering (CRBS) line shapes generated from all narrow-band pump experiment, Direct Simulation Monte-Carlo (DSMC) approach, and published kinetic line shape models are presented for argon, molecular nitrogen, and methane at 300 & 500 K and 1 atm. The kinetic line shape models require uncertain gas properties, such as bulk viscosity, and assume linearization of the kinetic equations from low intensities (<1 x 10(15) W/m(2)) operating in the perturbative regime. DSMC, a statistical approach to the Boltzmann equation, requires only basic gas parameters available in literature and simulates the forcing function from first principles without assumptions on laser intensity. The narrow band experiments show similar results to broadband experiments and validate the use of DSMC for the prediction of CRBS line shapes. (C) 2012 Optical Society of America
C1 [Cornella, Barry M.; Gimelshein, Sergey F.] ERC Inc, Edwards AFB, CA 93524 USA.
   [Shneider, Mikhail N.] Princeton Univ, Dept Mech & Aerosp Engn, Princeton, NJ 08544 USA.
   [Lilly, Taylor C.] Univ Colorado, Dept Mech & Aerosp Engn, Colorado Springs, CO 80918 USA.
   [Ketsdever, Andrew D.] USAF, Res Lab, Edwards AFB, CA 93524 USA.
RP Cornella, BM (reprint author), ERC Inc, Edwards AFB, CA 93524 USA.
EM tlilly@uccs.edu
FU Air Force Office of Scientific Research (AFOSR)
FX This work was supported by the Air Force Office of Scientific Research
   (AFOSR). The authors would like to thank Dr. Mitat Birkan (AFOSR/RSA)
   for his support of numerical efforts and Dr. Tatjana Curcic (AFOSR/RSE)
   for her support of experimental efforts. This work was also supported,
   in part, by a grant of computer time from the DOD High Performance
   Computing Modernization Program at the U.S. Army Engineer Research and
   Development Center DoD Supercomputing Resource Center (ERDC DSRC).
NR 40
TC 19
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U1 1
U2 9
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 JUN 4
PY 2012
VL 20
IS 12
BP 12975
EP 12986
DI 10.1364/OE.20.012975
PG 12
WC Optics
SC Optics
GA 961KP
UT WOS:000305463600034
PM 22714325
ER

PT J
AU Wang, JS
   Brown, GJ
   Hung, WC
   Wai, CM
AF Wang, Joanna S.
   Brown, Gail J.
   Hung, Wei-Chun
   Wai, Chien M.
TI Supercritical Fluid Deposition of Uniform PbS Nanoparticle Films for
   Energy-Transfer Studies
SO CHEMPHYSCHEM
LA English
DT Article
DE energy transfer; fluorescence; nanoparticle films; supercritical fluids;
   PbS
ID ORDERED ARRAYS; QUANTUM DOTS; THIN-FILMS; GOLD NANOPARTICLES;
   OPTICAL-PROPERTIES; PARTICLE-SIZE; GAS-PHASE; NANOCRYSTALS; POLYMER;
   MONOLAYER
AB Using supercritical fluid CO2 (Sc-CO2) as a medium, PbS nanoparticles can be uniformly deposited on surfaces of various substrates. Sc-CO2 deposition of PbS nanoparticles on carbon-coated copper grids, into small holes in silicon, and formation of uniform PbS nanoparticle films on glass are described. Fluorescence spectra of PbS nanoparticles obtained from the films prepared by the Sc-CO2 method indicate effective energy transfer between PbS nanoparticles of different sizes.
C1 [Hung, Wei-Chun; Wai, Chien M.] Univ Idaho, Dept Chem, Moscow, ID 83844 USA.
   [Wang, Joanna S.; Brown, Gail J.] USAF, Mat & Mfg Directorate, Res Lab, Wright Patterson AFB, OH 45433 USA.
RP Wai, CM (reprint author), Univ Idaho, Dept Chem, Renfrew Hall,Rm 116, Moscow, ID 83844 USA.
EM cwai@uidaho.edu
FU DURI-AFRL [FA8650-06-D-5401]; AFOSR/RSE
FX The work at the University of Idaho was partially supported by DURI-AFRL
   (FA8650-06-D-5401). The work at the Air Force Research Laboratory
   (AFRL/RXPS) was supported by Dr. Kitt Reinhardt of AFOSR/RSE.
NR 39
TC 9
Z9 9
U1 1
U2 21
PU WILEY-V C H VERLAG GMBH
PI WEINHEIM
PA BOSCHSTRASSE 12, D-69469 WEINHEIM, GERMANY
SN 1439-4235
J9 CHEMPHYSCHEM
JI ChemPhysChem
PD JUN 4
PY 2012
VL 13
IS 8
SI SI
BP 2068
EP 2073
DI 10.1002/cphc.201200042
PG 6
WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical
SC Chemistry; Physics
GA 947OO
UT WOS:000304439600013
PM 22467375
ER

PT J
AU Tokarev, A
   Luzinov, I
   Owens, JR
   Kornev, KG
AF Tokarev, Alexander
   Luzinov, Igor
   Owens, Jeffery R.
   Kornev, Konstantin G.
TI Magnetic Rotational Spectroscopy with Nanorods to Probe Time-Dependent
   Rheology of Microdroplets
SO LANGMUIR
LA English
DT Article
ID NICKEL NANOWIRES; LIVING CELLS; VISCOELASTICITY; PHOTOPOLYMERIZATION;
   MICRORHEOLOGY; COMPOSITES; HYDROGELS; GELATION; FLUIDS
AB In situ characterization of minute amounts of fluids that rapidly change their rheological properties is a challenge. In this paper, the rheological properties of fluids were evaluated by examining the behavior of magnetic nanorods in a rotating magnetic field. We proposed a theory describing the rotation of a magnetic nanorod in a fluid when its viscosity increases with time exponentially fast. To confirm the theory, we studied the time-dependent rheology of microdroplets of 2-hydroxyethylmethacrylate (HEMA)/diethylene glycol dimethacylate (DEGDMA)-based hydrogel during photopolymerization synthesis. We demonstrated that magnetic rotational spectroscopy provides rich physicochemical information about the gelation process. The method allows one to completely specify the time-dependent viscosity by directly measuring characteristic viscosity and characteristic time. Remarkably, one can analyze not only the polymer solution, but also the suspension enriched with the gel domains being formed. Since the probing nanorods are measured in nanometers, this method can be used for the in vivo mapping of the rheological properties of biofluids and polymers on a microscopic level at short time intervals when other methods fall short.
C1 [Tokarev, Alexander; Luzinov, Igor; Kornev, Konstantin G.] Clemson Univ, Sch Mat Sci & Engn, Clemson, SC 29634 USA.
   [Owens, Jeffery R.] USAF, Res Lab, Airbase Technol Div, Airbase Sci Branch, Panama City, FL 32403 USA.
RP Kornev, KG (reprint author), Clemson Univ, Sch Mat Sci & Engn, 161 Sirrine Hall, Clemson, SC 29634 USA.
EM kkornev@clemson.edu
RI Tokarev, Alexander/G-4060-2012
FU National Science Foundation [EFRI 0937985, CMMI-0825773]; U.S. Air Force
   [FA8650-09-D-5900]
FX We thank Guzelia Korneva for suggesting HEMA as a model of rapidly
   cross-linking polymers, and Daria Monaenkova, Kim Ivey, and David White
   for their help at different stages of this project. The authors are
   grateful for the financial support of National Science Foundation
   (Grants EFRI 0937985 and CMMI-0825773) and the U.S. Air Force contract
   FA8650-09-D-5900.
NR 37
TC 19
Z9 20
U1 3
U2 35
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0743-7463
J9 LANGMUIR
JI Langmuir
PD JUN 3
PY 2012
VL 28
IS 26
BP 10064
EP 10071
DI 10.1021/la3019474
PG 8
WC Chemistry, Multidisciplinary; Chemistry, Physical; Materials Science,
   Multidisciplinary
SC Chemistry; Materials Science
GA 966XA
UT WOS:000305869500021
PM 22668085
ER

PT J
AU Rose, GS
   Rajendran, J
   Manem, H
   Karri, R
   Pino, RE
AF Rose, Garrett S.
   Rajendran, Jeyavijayan
   Manem, Harika
   Karri, Ramesh
   Pino, Robinson E.
TI Leveraging Memristive Systems in the Construction of Digital Logic
   Circuits
SO PROCEEDINGS OF THE IEEE
LA English
DT Article
DE Digital integrated circuits; memristors; nanoelectronics; programmable
   circuits
ID ARCHITECTURE; ELECTRONICS; DEVICES
AB The recent emergence of the memristor has led to a great deal of research into the potential uses of the devices. Specifically, the innate reconfigurability of memristors can be exploited for applications ranging from multilevel memory, programmable logic, and neuromorphic computing, to name a few. In this work, memristors are explored for their potential use in dense programmable logic circuits. While much of the work is focused on Boolean logic, nontraditional styles including threshold logic and neuromorhpic computing are also considered. In addition to an analysis of the circuits themselves, computer-aided design (CAD) flows are presented which have been used to map digital logic functionality to dense complementary metal-oxide-semiconductor (CMOS)-memristive logic arrays. As exemplified through the circuits described here memristor-based digital logic holds great potential for high-density and energy-efficient computing.
C1 [Rose, Garrett S.; Pino, Robinson E.] USAF, Res Lab, Informat Directorate, Rome, NY 13441 USA.
   [Rajendran, Jeyavijayan; Manem, Harika; Karri, Ramesh] Polytech Inst New York Univ, Dept Elect & Comp Engn, Brooklyn, NY 11201 USA.
RP Rose, GS (reprint author), USAF, Res Lab, Informat Directorate, Rome, NY 13441 USA.
EM garrett.rose@rl.af.mil; jrajen01@students.poly.edu;
   hmanem01@students.poly.edu; rkarri@duke.poly.edu;
   robinson.pino@rl.af.mil
FU U.S. Air Force Research Laboratory (AFRL) [FA8750-09-2-0157]
FX Manuscript received October 29, 2010; revised May 6, 2011; accepted
   August 20, 2011. Date of publication October 21, 2011; date of current
   version May 10, 2012. The contractors acknowledge government support in
   the publication of this paper. This material is based upon work funded
   by the U.S. Air Force Research Laboratory (AFRL) under Contract
   FA8750-09-2-0157. Any opinions, findings and conclusions or
   recommendations expressed in this material are those of the authors and
   do not necessarily reflect the views of AFRL.
NR 31
TC 40
Z9 40
U1 0
U2 14
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 0018-9219
EI 1558-2256
J9 P IEEE
JI Proc. IEEE
PD JUN
PY 2012
VL 100
IS 6
SI SI
BP 2033
EP 2049
DI 10.1109/JPROC.2011.2167489
PG 17
WC Engineering, Electrical & Electronic
SC Engineering
GA 020UR
UT WOS:000309840600012
ER

PT J
AU Hollenbeck, AC
   Palazotto, AN
AF Hollenbeck, Alex C.
   Palazotto, Anthony N.
TI Methods Used to Evaluate the Hawkmoth (Manduca Sexta) as a Flapping-Wing
   Micro Air Vehicle
SO INTERNATIONAL JOURNAL OF MICRO AIR VEHICLES
LA English
DT Article
ID HOVERING INSECT FLIGHT; MECHANICAL-PROPERTIES; POWER REQUIREMENTS;
   LOCUST FLIGHT; SPHINX MOTHS; MUSCLE; CUTICLE; OUTPUT; LIFT; HEAD
AB Examining a biological flapping-flight mechanism as a mechanical system provides valuable insight related to the development and construction of Flapping-Wing Micro Air Vehicles (FWMAVs). Insects provide excellent candidates for this reverse-engineering, and one species in particular, the hawkmoth Manduca sexta, stands out as an exceptional model. Engineers with FWMAV aspirations can benefit greatly from knowledge of M. sexta's advanced yet deceptively simple flight mechanism. Avenues for investigating this mechanism include finite element modeling, nanoindentation for material properties, and mechanical power output calculations or measurement. This paper presents these concepts and reviews existing literature to provide a platform for ongoing FWMAV research and design.
C1 [Hollenbeck, Alex C.; Palazotto, Anthony N.] USAF, Dept Aeronaut & Astronaut, Inst Technol, Wright Patterson AFB, OH 45433 USA.
RP Hollenbeck, AC (reprint author), USAF, Dept Aeronaut & Astronaut, Inst Technol, Wright Patterson AFB, OH 45433 USA.
FU Air Force Office of Scientific Research
FX The views expressed in this article are those of the author and do not
   reflect the official policy or position of the United States Air Force,
   Department of Defense, or the U.S. Government. The authors would like to
   thank Dr. Douglas Smith of the Air Force Office of Scientific Research
   for financially supporting this research.
NR 42
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Z9 7
U1 0
U2 13
PU MULTI-SCIENCE PUBL CO LTD
PI BRENTWOOD
PA 5 WATES WAY, BRENTWOOD CM15 9TB, ESSEX, ENGLAND
SN 1756-8293
J9 INT J MICRO AIR VEH
JI Int. J. Micro Air Veh.
PD JUN
PY 2012
VL 4
IS 2
BP 119
EP 132
DI 10.1260/1756-8293.4.2.119
PG 14
WC Engineering, Aerospace
SC Engineering
GA 990NJ
UT WOS:000307637400002
ER

PT J
AU Hatzfeld, JJ
   LaVeist, TA
   Gaston-Johansson, FG
AF Hatzfeld, Jennifer J.
   LaVeist, Thomas A.
   Gaston-Johansson, Fannie G.
TI Racial/Ethnic Disparities in the Prevalence of Selected Chronic Diseases
   Among US Air Force Members, 2008
SO PREVENTING CHRONIC DISEASE
LA English
DT Article
ID UNITED-STATES; RISK-FACTORS; HEALTH-CARE; ETHNIC DISPARITIES; MILITARY
   PERSONNEL; INTERVENTIONS; MANAGEMENT
AB Introduction
   Few studies have evaluated possible racial/ethnic disparities in chronic disease prevalence among US Air Force active-duty members. Because members have equal access to free health care and preventive screening, the presence of health disparities in this population could offer new insight into the source of these disparities. Our objective was to identify whether the prevalence of 4 common chronic diseases differed by race/ethnicity in this population.
   Methods
   We compiled de-identified clinical and administrative data for Air Force members aged 21 or older who had been on active duty for at least 12 months as of October 2008 (N = 284,850). Multivariate logistic regression models were used to determine the prevalence of hypertension, dyslipidemia, type 2 diabetes, and asthma by race/ethnicity, controlling for rank and sex.
   Results
   Hypertension was the most prevalent chronic condition (5.3%), followed by dyslipidemia (4.6%), asthma (0.9%), and diabetes (0.3%). Significant differences were noted by race/ethnicity for all conditions. Compared with non-Hispanic whites, the prevalence of all chronic diseases was higher for non-Hispanic blacks; disparities for adults of other minority race/ethnicity categories were evident but less consistent.
   Conclusion
   The existence of racial/ethnic disparities among active-duty Air Force members, despite equal access to free health care, indicates that premilitary health risks continue after enlistment. Racial and ethnic disparities in the prevalence of these chronic diseases suggest the need to ensure preventive health care practices and community outreach efforts are effective for racial/ethnic minorities, particularly non-Hispanic blacks.
C1 [LaVeist, Thomas A.] Johns Hopkins Bloomberg Sch Publ Hlth, Baltimore, MD USA.
   [Gaston-Johansson, Fannie G.] Johns Hopkins Sch Nursing, Baltimore, MD USA.
RP Hatzfeld, JJ (reprint author), USAF, USNC, 101 Bodin Cir, Travis AFB, CA 94535 USA.
EM jennifer.hatzfeld@us.af.mil
FU TriService Nursing Research Program [N08-001]
FX This study was funded by the TriService Nursing Research Program (grant
   no. N08-001). The Air Force Institute of Technology Civilian Institution
   Program and the Johns Hopkins University School of Nursing provided
   additional academic support.
NR 25
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U1 0
U2 4
PU CENTERS  DISEASE CONTROL
PI ATLANTA
PA 1600 CLIFTON RD, ATLANTA, GA 30333 USA
SN 1545-1151
J9 PREV CHRONIC DIS
JI Prev. Chronic Dis.
PD JUN
PY 2012
VL 9
AR 110136
DI 10.5888/pcd9.110136
PG 8
WC Public, Environmental & Occupational Health
SC Public, Environmental & Occupational Health
GA 977HY
UT WOS:000306648500004
ER

PT J
AU Roslyak, O
   Gumbs, G
   Huang, DH
AF Roslyak, O.
   Gumbs, Godfrey
   Huang, Danhong
TI Energy loss spectroscopy of epitaxial versus free-standing multilayer
   graphene
SO PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
LA English
DT Article
ID INTERCALATED GRAPHITE; DIELECTRIC FUNCTION; CHARGED-PARTICLE; PLASMA
   LOSSES; THIN-FILMS; ELECTRONS; BANDGAP
AB We present a formalism and numerical results for the energy loss of a charged particle scattered at an arbitrary angle from epitaxially grown multilayer graphene (MLG). It is compared with that of freestanding graphene layers. Specifically, we investigated the effect of the substrate induced energy gap on one of the layers. The gap yields collective plasma oscillations whose characteristics are qualitatively and quantitatively different from those produced by Dirac fermions in gapless graphene. The range of wave numbers for undamped self-sustaining plasmons is increased as the gap is increased, thereby substantially increasing and red-shifting the MLG stopping power for some range of charged particle velocity. We also applied our formalism to interpret several distinct features of experimentally obtained electron energy loss spectroscopy (EELS) data. (C) 2012 Elsevier B.V. All rights reserved.
C1 [Roslyak, O.; Gumbs, Godfrey] CUNY, Hunter Coll, Dept Phys & Astron, New York, NY 10065 USA.
   [Huang, Danhong] USAF, Res Lab, Space Vehicles Directorate, Kirtland AFB, NM 87117 USA.
RP Roslyak, O (reprint author), CUNY, Hunter Coll, Dept Phys & Astron, 695 Pk Ave, New York, NY 10065 USA.
EM avroslyak@gmail.com
FU AFRL [FA 9453-07-C-0207]; AFOSR
FX This research was supported by contract # FA 9453-07-C-0207 of AFRL. DH
   would also like to thank Prof. Xiang Zhang for hosting the Visiting
   Scientist Program sponsored by AFOSR.
NR 38
TC 3
Z9 3
U1 8
U2 40
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 1386-9477
J9 PHYSICA E
JI Physica E
PD JUN
PY 2012
VL 44
IS 9
BP 1874
EP 1884
DI 10.1016/j.physe.2012.05.017
PG 11
WC Nanoscience & Nanotechnology; Physics, Condensed Matter
SC Science & Technology - Other Topics; Physics
GA 983AS
UT WOS:000307089200012
ER

PT J
AU Perlovsky, L
AF Perlovsky, Leonid
TI Cognitive function, origin, and evolution of musical emotions
SO MUSICAE SCIENTIAE
LA English
DT Article
DE cognition; cognitive dissonances; culture; emotions; evolution; language
   prosody; music; knowledge instinct
ID LANGUAGE; CONSCIOUSNESS; COMMUNICATION; HEURISTICS; EXPERIENCE;
   INNATENESS; ISSUES; BRAIN
AB Based on recent advancements in cognitive science and mathematical models of the mind, this paper proposes a hypothesis on a fundamental role of music in cognition, and in the evolution of the mind, consciousness, and cultures. The vocalizations of proto-humans split into two types: one less emotional and more concretely semantic, evolving into language, and the other preserving emotional connections along with semantic ambiguity, evolving into music. The proposed hypothesis considers specific mechanisms of the mind-brain, which required the evolution of music in parallel with the evolution of cultures and languages. The evolution of language toward becoming the semantically powerful tool used today has required emancipation from emotional encumbrances. Arguments explore why no less powerful mechanisms required a compensatory evolution of music toward more differentiated and refined emotionality. Due to this common origin, language and music in all cultures still retain both semantics and emotionality; however, in this article we emphasize differences in the functions of music and language. The fast differentiation of knowledge due to language has created cognitive dissonances among knowledge and instincts. Differentiated emotions were needed for resolving these dissonances. Thus the need for refined music in the process of cultural evolution is grounded in fundamental mechanisms of cognition. This is why today's human mind and cultures cannot exist without today's music. Empirical data on the parallel evolution of cognition, emotions, consciousness, and music during the last three thousand years are discussed. Data on changes in musical styles parallel to changes in consciousness support the proposed hypothesis. We propose experimental approaches toward verification of this hypothesis in psychological and neuroimaging research.
C1 Harvard Univ, Athinoula A Martinos Ctr Biomed Imaging, USAF, Res Lab, Cambridge, MA 02138 USA.
RP Perlovsky, L (reprint author), Harvard Univ, Athinoula A Martinos Ctr Biomed Imaging, USAF, Res Lab, Cambridge, MA 02138 USA.
EM leonid@seas.harvard.edu
NR 103
TC 20
Z9 20
U1 2
U2 39
PU SAGE PUBLICATIONS LTD
PI LONDON
PA 1 OLIVERS YARD, 55 CITY ROAD, LONDON EC1Y 1SP, ENGLAND
SN 1029-8649
EI 2045-4147
J9 MUSIC SCI
JI Music Sci.
PD SUM
PY 2012
VL 16
IS 2
BP 185
EP 199
DI 10.1177/1029864912448327
PG 15
WC Music; Psychology, Experimental
SC Music; Psychology
GA 979LV
UT WOS:000306822400004
ER

PT J
AU Pigage, HK
   Pigage, JC
   Peyton, RD
AF Pigage, Helen K.
   Pigage, Jon C.
   Peyton, Roger D.
TI SIPHONAPTERA OF PEROMYSCUS IN THE NIOBRARA CHALK BARRENS, COLORADO
SO SOUTHWESTERN NATURALIST
LA English
DT Article
ID MAMMALS
AB We collected 327 Peromyscus truei (pinyon deermice), 211 P maniculalus (North American deermice), and 38 P leucopus (white-footed deermice) on Fort Carson Military Reservation, Pueblo County, Colorado, during May-June 2007. The deermice hosted 408 fleas including 238 Aetheca wagneri, 169 Orchopeas leucopus, and 1 Meringis parkeri. Both A. wagneri and O. leucopus were on all species of deermice. Prevalence of fleas was 42.1% for P leucopus, 36.4% for P. truei, and 35.1% for P maniculatus. Prevalence of O. leucopus was significantly greater for P truei (43.1%) than for P maniculatus (13.7%) and P leucopus (13.2%). Conversely, P maniculatus (52.1%) had a significantly greater prevalence of A. wagneri than either P. leucopus (47.1%) or P. truei (33.6%).
C1 [Pigage, Helen K.] USAF Acad, HQ USAFA DFB, Dept Biol, Colorado Springs, CO 80840 USA.
   [Pigage, Jon C.] Univ Colorado, Dept Biol, Colorado Springs, CO 80918 USA.
   [Peyton, Roger D.] Directorate Publ Works Environm Div, Ft Carson, CO 80913 USA.
RP Pigage, HK (reprint author), USAF Acad, HQ USAFA DFB, Dept Biol, 2355 Fac Dr,Suite 2P389, Colorado Springs, CO 80840 USA.
EM helen.pigage@usafa.edu
FU departments of biology at the University of Colorado at Colorado
   Springs; United States Air Force Academy
FX We thank R. Day, T. Perfors, and K. Philips for assistance in the field,
   M. Verano for translation of the abstract, and two anonymous reviewers
   for comments. The departments of biology at the University of Colorado
   at Colorado Springs and the United States Air Force Academy provided
   financial assistance.
NR 16
TC 0
Z9 0
U1 0
U2 1
PU SOUTHWESTERN ASSOC NATURALISTS
PI SAN MARCOS
PA SOUTHWEST TEXAS STATE UNIV, DEPT BIOLOGY, 601 UNIVERSITY DR, SAN MARCOS,
   TX 78666 USA
SN 0038-4909
J9 SOUTHWEST NAT
JI Southw. Natural.
PD JUN
PY 2012
VL 57
IS 2
BP 210
EP 212
PG 3
WC Biodiversity Conservation; Ecology
SC Biodiversity & Conservation; Environmental Sciences & Ecology
GA 970TY
UT WOS:000306156400018
ER

PT J
AU Nepal, D
   Onses, MS
   Park, K
   Jespersen, M
   Thode, CJ
   Nealey, PF
   Vaia, RA
AF Nepal, Dhriti
   Onses, M. Serdar
   Park, Kyoungweon
   Jespersen, Michael
   Thode, Christopher J.
   Nealey, Paul F.
   Vaia, Richard A.
TI Control over Position, Orientation, and Spacing of Arrays of Gold
   Nanorods Using Chemically Nanopatterned Surfaces and Tailored
   Particle-Particle-Surface Interactions
SO ACS NANO
LA English
DT Article
DE gold nanorods; directed assembly; controlled orientation; position;
   spacing; chemical contrast pattern; specificity
ID DIBLOCK COPOLYMERS; AU NANOPARTICLES; PLACEMENT; ROUTE; NANOSTRUCTURES;
   ADSORPTION; SIMULATION; PLASMONICS; DEPOSITION; BRUSHES
AB The synergy of self- and directed-assembly processes and lithography provides intriguing avenues to fabricate translationally ordered nanopartide arrangements, but currently lacks the robustness necessary to deliver complex spatial organization. Here, we demonstrate that interparticle spacing and local orientation of gold nanorods (AuNR) can be tuned by controlling the Debye length of AuNR in solution and the dimensions of a chemical contrast pattern. Electrostatic and hydrophobic selectivity for AuNR to absorb to patterned regions of poly(2-vinylpyridine) (P2VP) and polystyrene brushes and mats was demonstrated for AuNR functionalized with mercaptopropane sulfonate (MS) and poly(ethylene glycol), respectively. For P2VP patterns of stripes with widths comparable to the length of the AuNR, single- and double-column arrangements of AuNR oriented parallel and perpendicular to the P2VP line were obtained for MS-AuNR. Furthermore, the spacing of the assembled AuNR was uniform along the stripe and related to the ionic strength of the AuNR dispersion. The different AuNR arrangements are consistent with predictions based on maximization of packing of AuNR within the confined strip.
C1 [Nepal, Dhriti; Park, Kyoungweon; Jespersen, Michael; Vaia, Richard A.] USAF, Nanostruct & Biol Mat Branch, Res Labs, RXBN, Wright Patterson AFB, OH 45433 USA.
   [Onses, M. Serdar; Thode, Christopher J.; Nealey, Paul F.] Univ Wisconsin, Coll Engn, Dept Chem & Biol Engn, Madison, WI USA.
RP Vaia, RA (reprint author), USAF, Nanostruct & Biol Mat Branch, Res Labs, RXBN, Wright Patterson AFB, OH 45433 USA.
EM richard.vaia@wpafb.af.mil
FU Air Force Office of Scientific Research; Air Force Research Laboratory
   Materials & Manufacturing Directorate
FX The authors are grateful to the Air Force Office of Scientific Research
   and Air Force Research Laboratory Materials & Manufacturing Directorate
   for financial support.
NR 42
TC 44
Z9 44
U1 11
U2 134
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1936-0851
J9 ACS NANO
JI ACS Nano
PD JUN
PY 2012
VL 6
IS 6
BP 5693
EP 5701
DI 10.1021/nn301824u
PG 9
WC Chemistry, Multidisciplinary; Chemistry, Physical; Nanoscience &
   Nanotechnology; Materials Science, Multidisciplinary
SC Chemistry; Science & Technology - Other Topics; Materials Science
GA 963YQ
UT WOS:000305661300127
PM 22647144
ER

PT J
AU Fiorino, ST
   Deibel, JA
   Grice, PM
   Novak, MH
   Spinoza, J
   Owens, L
   Ganti, S
AF Fiorino, Steven T.
   Deibel, Jason A.
   Grice, Phillip M.
   Novak, Markus H.
   Spinoza, Julian
   Owens, Lindsay
   Ganti, Satya
TI A technique to measure optical properties of brownout clouds for
   modeling terahertz propagation
SO APPLIED OPTICS
LA English
DT Article
ID TIME-DOMAIN SPECTROSCOPY; AEROSOLS
AB Brownout, the loss of visibility caused by dust resultant of helicopter downwash, is a factor in the large majority of military helicopter accidents. As terahertz radiation readily propagates through the associated dust aerosols and is attenuated by atmospheric water vapor within short distances, it can provide low-profile imaging that improves effective pilot visibility. In order to model this application of terahertz imaging, it is necessary to determine the optical properties of obscurants at these frequencies. We present here a method of empirical calculation and experimental measurement of the complex refractive index of the obscuring aerosols. Results derived from terahertz time-domain spectral measurements are incorporated into the AFIT CDE Laser Environmental Effects Definition and Reference (LEEDR) software. (C) 2012 Optical Society of America
C1 [Fiorino, Steven T.; Grice, Phillip M.; Novak, Markus H.; Spinoza, Julian] USAF, Ctr Directed Energy, Inst Technol, Wright Patterson AFB, OH 45433 USA.
   [Deibel, Jason A.; Owens, Lindsay] Wright State Univ, Dept Phys, Dayton, OH 45435 USA.
   [Deibel, Jason A.; Ganti, Satya] Wright State Univ, Dept Elect Engn, Dayton, OH 45435 USA.
RP Fiorino, ST (reprint author), USAF, Ctr Directed Energy, Inst Technol, 2950 Hobson Way, Wright Patterson AFB, OH 45433 USA.
EM steven.fiorino@afit.edu
FU Ohio Third Frontier Ohio Academic Research Cluster in Layered Sensing;
   Institute for the Development and Commercialization of Advanced Sensor
   Technology; Wright State University Office of Research and Sponsored
   Programs
FX The views expressed in this paper are those of the authors and do not
   necessarily reflect the official policy or position of the Air Force,
   the Department of Defense, or the U. S. government. Wright State
   University would like to acknowledge the following entities for funding
   and equipment support: the Ohio Third Frontier Ohio Academic Research
   Cluster in Layered Sensing, the Institute for the Development and
   Commercialization of Advanced Sensor Technology, and the Wright State
   University Office of Research and Sponsored Programs. The Air Force
   Institute of Technology acknowledges the generous support of the
   Directed Energy Professional Society (DEPS) and the High Energy Laser
   Joint Technology Office (HEL-JTO).
NR 16
TC 4
Z9 4
U1 1
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 JUN 1
PY 2012
VL 51
IS 16
BP 3605
EP 3613
DI 10.1364/AO.51.003605
PG 9
WC Optics
SC Optics
GA 955JT
UT WOS:000305015300062
PM 22695600
ER

PT J
AU Barker, D
   Huang, XY
   Liu, ZQ
   Auligne, T
   Zhang, X
   Rugg, S
   Ajjaji, R
   Bourgeois, A
   Bray, J
   Chen, YS
   Demirtas, M
   Guo, YR
   Henderson, T
   Huang, W
   Lin, HC
   Michalakes, J
   Rizvi, S
   Zhang, XY
AF Barker, Dale
   Huang, Xiang-Yu
   Liu, Zhiquan
   Auligne, Tom
   Zhang, Xin
   Rugg, Steven
   Ajjaji, Raji
   Bourgeois, Al
   Bray, John
   Chen, Yongsheng
   Demirtas, Meral
   Guo, Yong-Run
   Henderson, Tom
   Huang, Wei
   Lin, Hui-Chuan
   Michalakes, John
   Rizvi, Syed
   Zhang, Xiaoyan
TI THE WEATHER RESEARCH AND FORECASTING MODEL'S COMMUNITY
   VARIATIONAL/ENSEMBLE DATA ASSIMILATION SYSTEM WRFDA
SO BULLETIN OF THE AMERICAN METEOROLOGICAL SOCIETY
LA English
DT Article
ID MESOSCALE PREDICTION SYSTEM; TRANSFORM KALMAN FILTER; RADAR DATA
   ASSIMILATION; SEVERE WIND EVENT; TYPHOON RUSA 2002; PART I; BIAS
   CORRECTION; SATELLITE DATA; SCHEME; IMPACT
C1 [Huang, Xiang-Yu; Liu, Zhiquan; Auligne, Tom; Zhang, Xin; Bourgeois, Al; Guo, Yong-Run; Huang, Wei; Lin, Hui-Chuan; Rizvi, Syed; Zhang, Xiaoyan] NCAR, MMM Div, Boulder, CO 80307 USA.
   [Barker, Dale] Met Off, Exeter, Devon, England.
   [Rugg, Steven] USAF, Weather Agcy, Offutt AFB, NE USA.
   [Ajjaji, Raji] AF & Air Def Meteorol Dept, Abu Dhabi, U Arab Emirates.
   [Chen, Yongsheng] York Univ, Toronto, ON M3J 2R7, Canada.
   [Demirtas, Meral] Turkish State Meteorol Serv, Ankara, Turkey.
   [Henderson, Tom] NOAA, Earth Syst Res Lab, Boulder, CO USA.
   [Michalakes, John] Natl Renewable Energy Lab, Golden, CO USA.
RP Huang, XY (reprint author), NCAR, MMM Div, POB 3000, Boulder, CO 80307 USA.
EM huangx@ucar.edu
RI Zhang, Xin/L-7141-2015; Demirtas, Meral/Q-8555-2016
OI Demirtas, Meral/0000-0002-3026-9276
NR 58
TC 89
Z9 97
U1 1
U2 24
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 2012
VL 93
IS 6
BP 831
EP 843
DI 10.1175/BAMS-D-11-00167.1
PG 13
WC Meteorology & Atmospheric Sciences
SC Meteorology & Atmospheric Sciences
GA 964VI
UT WOS:000305724400011
ER

PT J
AU Dabrowski, R
AF Dabrowski, Richard
TI Hispania Guest Editorial: Parallel Lines Should Cross
SO HISPANIA-A JOURNAL DEVOTED TO THE TEACHING OF SPANISH AND PORTUGUESE
LA English
DT Editorial Material
C1 USAF Acad, Spanish Portuguese Div, Colorado Springs, CO 80840 USA.
RP Dabrowski, R (reprint author), USAF Acad, Spanish Portuguese Div, Colorado Springs, CO 80840 USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU AMER  ASSOC TEACHERS SPANISH PORTUGUESE, INC
PI WALLED LAKE
PA 900 LADD RD, WALLED LAKE, MI 48390 USA
SN 0018-2133
J9 HISPANIA-J DEV INTER
JI Hispania-J. Devoted Teach. Span. Port.
PD JUN
PY 2012
VL 95
IS 2
PG 1
WC Linguistics; Language & Linguistics; Literature, Romance
SC Linguistics; Literature
GA 958TD
UT WOS:000305262700002
ER

PT J
AU Dennis, AR
   Robert, LP
   Curtis, AM
   Kowalczyk, ST
   Hasty, BK
AF Dennis, Alan R.
   Robert, Lionel P., Jr.
   Curtis, Aaron M.
   Kowalczyk, Stacy T.
   Hasty, Bryan K.
TI Trust Is in the Eye of the Beholder: A Vignette Study of Postevent
   Behavioral Controls' Effects on Individual Trust in Virtual Teams
SO INFORMATION SYSTEMS RESEARCH
LA English
DT Article
DE virtual teams; trust; controls; disposition to trust
ID INTERPERSONAL-TRUST; ORGANIZATIONAL JUSTICE; CONCEPTUAL-FRAMEWORK;
   INFORMATION-SYSTEMS; NURSING RESEARCH; COGNITIVE-STYLE; JOINT VENTURES;
   PERFORMANCE; COOPERATION; MANAGEMENT
AB Research in face-to-face teams shows conflicting results about the impact of behavioral controls on trust; some research shows that controls increase the salience of good behavior, which increases trust while other research shows that controls increase the salience of poor behavior that decreases trust. The only study in virtual teams, which examined poorly functioning teams, found that controls increased the salience of poor behavior, which decreased trust. We argue that in virtual teams behavioral controls amplify the salience of all behaviors (positive and negative) and that an individual's selective perception bias influences how these behaviors are interpreted. Thus the link from behavioral controls to trust is more complex than first thought. We conducted a 2 x 2 experiment, varying the use of behavioral controls (controls, no controls) and individual team member behaviors (reneging behaviors designed to reduce trust beliefs and fulfilling behaviors designed to increase trust beliefs). We found that behavioral controls did amplify the salience of all behaviors; however, contrary to what we expected, this actually weakened the impact of reneging and fulfilling behaviors on trust. We believe that completing a formal evaluation increased empathy and the awareness of context in which the behaviors occurred and thus mitigated extreme perceptions. We also found that behavioral controls increased the selective perception bias which induced participants to see the behaviors their disposition to trust expected rather than the behaviors that actually occurred.
C1 [Dennis, Alan R.] Indiana Univ, Kelley Sch Business, Bloomington, IN 47405 USA.
   [Robert, Lionel P., Jr.] Univ Michigan, Sch Informat, Ann Arbor, MI 48109 USA.
   [Curtis, Aaron M.] Brigham Young Univ, Coll Business Comp & Govt, Dept Comp & Informat Sci, Laie, HI 96762 USA.
   [Kowalczyk, Stacy T.] Indiana Univ, Sch Lib & Informat Sci, Bloomington, IN 47405 USA.
   [Hasty, Bryan K.] USAF, Inst Technol, Dept Syst & Engn Management, Wright Patterson AFB, OH 45433 USA.
RP Dennis, AR (reprint author), Indiana Univ, Kelley Sch Business, Bloomington, IN 47405 USA.
EM ardennis@indiana.edu; lprobert@umich.edu; aaron.curtis@byuh.edu;
   skowalcz@indiana.edu; commguy@hotmail.com
NR 105
TC 6
Z9 6
U1 16
U2 78
PU INFORMS
PI CATONSVILLE
PA 5521 RESEARCH PARK DR, SUITE 200, CATONSVILLE, MD 21228 USA
SN 1047-7047
EI 1526-5536
J9 INFORM SYST RES
JI Inf. Syst. Res.
PD JUN
PY 2012
VL 23
IS 2
BP 546
EP 558
DI 10.1287/isre.1110.0364
PG 13
WC Information Science & Library Science; Management
SC Information Science & Library Science; Business & Economics
GA 966NQ
UT WOS:000305845100015
ER

PT J
AU Hubbs, JE
   Nathan, V
   Tidrow, M
   Razeghi, M
AF Hubbs, John E.
   Nathan, Vaidya
   Tidrow, Meimei
   Razeghi, Manijeh
TI Radiometric characterization of long-wavelength infrared type II
   strained layer superlattice focal plane array under low-photon
   irradiance conditions
SO OPTICAL ENGINEERING
LA English
DT Article
DE infrared focal plane array; strained layer superlattice detectors; low
   photon irradiance; infrared detectors
AB We present the results of the radiometric characterization of an "M" structure long wavelength infrared Type-II strained layer superlattice (SLS) infrared focal plane array (IRFPA) developed by Northwestern University (NWU). The performance of the M-structure SLS IRFPA was radiometrically characterized as a function of photon irradiance, integration time, operating temperature, and detector bias. Its performance is described using standard figures of merit: responsivity, noise, and noise equivalent irradiance. Assuming background limited performance operation at higher irradiances, the detector quantum efficiency for the SLS detector array is approximately 57%. The detector dark density at 80 K is 142 mu A/cm(2), which represents a factor of seven reduction from previously measured devices. (C) 2012 Society of Photo-Optical Instrumentation Engineers (SPIE). [DOI: 10.1117/1.OE.51.6.064002]
C1 [Hubbs, John E.] USAF, Res Lab, Space Vehicles Directorate, Infrared Radiat Effects Lab IRREL, Kirtland AFB, NM 87117 USA.
   [Tidrow, Meimei] Night Vis & Elect Sensors Directorate, Ft Belvoir, VA 22060 USA.
   [Razeghi, Manijeh] Northwestern Univ, Ctr Quantum Devices, Dept Elect Engn & Comp Sci, Evanston, IL 60208 USA.
RP Hubbs, JE (reprint author), USAF, Res Lab, Space Vehicles Directorate, Infrared Radiat Effects Lab IRREL, Kirtland AFB, NM 87117 USA.
EM jhubbs@ball.com
RI Razeghi, Manijeh/B-7265-2009
NR 8
TC 0
Z9 0
U1 0
U2 7
PU SPIE-SOC PHOTO-OPTICAL INSTRUMENTATION ENGINEERS
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98225 USA
SN 0091-3286
EI 1560-2303
J9 OPT ENG
JI Opt. Eng.
PD JUN
PY 2012
VL 51
IS 6
AR 064002
DI 10.1117/1.OE.51.6.064002
PG 8
WC Optics
SC Optics
GA 965UG
UT WOS:000305792200024
ER

PT J
AU Watson, EA
AF Watson, Edward A.
TI Special Section Guest Editorial Active Imaging: Concepts, Components,
   and Applications
SO OPTICAL ENGINEERING
LA English
DT Editorial Material
C1 USAF, Res Lab, Sensors Directorate, Multispectral Sensing & Detect Div, Wright Patterson AFB, OH 45433 USA.
RP Watson, EA (reprint author), USAF, Res Lab, Sensors Directorate, Multispectral Sensing & Detect Div, 2241 Avion Circle, Wright Patterson AFB, OH 45433 USA.
EM edward.watson@wpafb.af.mil
NR 0
TC 0
Z9 0
U1 0
U2 0
PU SPIE-SOC PHOTO-OPTICAL INSTRUMENTATION ENGINEERS
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98225 USA
SN 0091-3286
J9 OPT ENG
JI Opt. Eng.
PD JUN
PY 2012
VL 51
IS 6
AR 061301
DI 10.1117/1.OE.51.6.061301
PG 1
WC Optics
SC Optics
GA 965UG
UT WOS:000305792200003
ER

PT J
AU Lasiecka, I
   Marchand, R
   McDevitt, T
AF Lasiecka, Irena
   Marchand, Richard
   McDevitt, Tim
TI BOUNDARY CONTROL AND HIDDEN TRACE REGULARITY OF A SEMIGROUP ASSOCIATED
   WITH A BEAM EQUATION AND NON-DISSIPATIVE BOUNDARY CONDITIONS
SO DYNAMIC SYSTEMS AND APPLICATIONS
LA English
DT Article
DE Beam and plate equations; non-monotone feedback boundary conditions;
   hidden boundary regularity; Gevrey's class; spectral analysis;
   admissible control systems
ID FEEDBACK; SPACE
AB The aim of this work is to develop analyses suitable for studying beam and plate equations equipped with non-monotone feedback boundary conditions. While the analysis of monotone structures is well known by now and based on applications of a suitable version of monotone semigroup theory, in the non-monotone case detailed analysis (microlocal) on the boundary seems necessary. In fact, it is shown that boundary traces display a rather peculiar type of "hidden regularity" which is instrumental in showing that (i) the resulting semigroup is of Gevrey's class, and OH the associated control system is "well-posed" within a standard finite energy space and with controls that are not necessarily collocated. The result is valid for finite and infinite horizon control problems. This is the first control result of this type in hyperbolic-like dynamics and a non-collocated framework. The unexpected beneficial role of breaking monotonicity is proved to have critical influence on the well-posedness of the control system with control actuators placed at different boundary conditions than the damping.
   Numerical simulations reveal spectral properties of the operators complementing theoretical findings.
C1 [Lasiecka, Irena] Univ Virginia, Dept Math, Charlottesville, VA 22904 USA.
   [Lasiecka, Irena] Polish Acad Sci, Syst Res Inst, PL-01447 Warsaw, Poland.
   [Marchand, Richard] Slippery Rock Univ, Slippery Rock, PA 16057 USA.
   [Marchand, Richard] USAF Acad, Dept Math Sci, Colorado Springs, CO 80840 USA.
   [McDevitt, Tim] Elizabethtown Coll, Dept Math Sci, Elizabethtown, PA 17022 USA.
RP Lasiecka, I (reprint author), Univ Virginia, Dept Math, Charlottesville, VA 22904 USA.
EM il2v@virginia.edu; richard.marchand@sru.edu; mcdevittt@etown.edu
RI Lasiecka, Irena/C-1386-2013
FU NSF [DMS-0606682]; AFOSR [FA9550-09-1-0459]
FX The research of Lasiecka has been supported by the NSF Grant DMS-0606682
   and the AFOSR Grant FA9550-09-1-0459. Received November 15, 2011
   1056-2176 $15.00 (c) Dynamic Publishers, Inc.
NR 28
TC 0
Z9 0
U1 0
U2 1
PU DYNAMIC PUBLISHERS, INC
PI ATLANTA
PA PO BOX 48654, ATLANTA, GA 30362-0654 USA
SN 1056-2176
J9 DYNAM SYST APPL
JI Dyn. Syst. Appl.
PD JUN-SEP
PY 2012
VL 21
IS 2-3
SI SI
BP 467
EP 490
PG 24
WC Mathematics, Applied; Mathematics
SC Mathematics
GA 963AR
UT WOS:000305593000020
ER

PT J
AU Panasyuk, GY
   Tsyganov, AB
AF Panasyuk, George Y.
   Tsyganov, Alexander B.
TI Theory of collisional electron spectroscopy for gas analysis
SO JOURNAL OF APPLIED PHYSICS
LA English
DT Article
ID EXCITATION CROSS-SECTIONS; VIBRATIONAL-EXCITATION; OXYGEN MOLECULES;
   IMPACT; N-2; SCATTERING; CHROMATOGRAPHY; RESONANCE; ENERGIES; KINETICS
AB We develop an analytical model for a proposed method of gas analysis. The method is based on collisional electron spectroscopy, where a limited number of electron scatterings on gas molecules inside the analyzer is permitted. The proposed method can be used to identify impurity species in a main gas from the resulted energy spectra of photoelectrons collected by the cathode. The photoelectrons are produced by vacuum ultraviolet-ionization of impurity species. Physical processes are explored in the case of detecting impurities in atmospheric air. The electron velocity distribution function inside the detector is derived. It is shown that the voltage dependence of the second derivative of the cathode current with respect to the applied cathode voltage can provide electron energy spectrum and subsequent identification of the impurity species. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4723640]
C1 [Panasyuk, George Y.] USAF, Prop Directorate, Res Lab, Wright Patterson AFB, OH 45433 USA.
   [Tsyganov, Alexander B.] St Petersburg State Min Univ, Dept Gen & Tech Phys, St Petersburg, Russia.
RP Panasyuk, GY (reprint author), USAF, Prop Directorate, Res Lab, Wright Patterson AFB, OH 45433 USA.
EM George.Panasyuk.ctr@wpafb.af.mil
RI Panasyuk, George/C-7649-2015
OI Panasyuk, George/0000-0002-4873-990X
NR 27
TC 0
Z9 0
U1 0
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 JUN 1
PY 2012
VL 111
IS 11
AR 114503
DI 10.1063/1.4723640
PG 8
WC Physics, Applied
SC Physics
GA 960PW
UT WOS:000305401400145
ER

PT J
AU Wang, HB
   Lee, KM
   White, TJ
   Oates, WS
AF Wang, Hongbo
   Lee, Kyung Min
   White, Timothy J.
   Oates, William S.
TI trans-cis and trans-cis-trans Microstructure Evolution of Azobenzene
   Liquid-Crystal Polymer Networks
SO MACROMOLECULAR THEORY AND SIMULATIONS
LA English
DT Article
ID NEMATIC ELASTOMERS; ACTUATORS; LIGHT; FILMS; RESIDUES; DRIVEN; MOTION;
   CHAIN
AB The photomechanics of azobenzene LCNs is modeled using a nonlinear continuum mechanics approach that couples photoisomerization of liquid crystal domain structures with light absorption and deformation of a glassy polymer network. The effects during UV-stimulated transcis photomechanical deformation versus blue-green light (transcistrans) photomechanical deformation are simulated. Different bending deformation is predicted by assuming liquid-crystal order/disorder behavior during transcis photoisomerization in comparison to light-polarization-driven reorientation of the trans phase during potential trans-cis-trans photoisomerization. Light-controlled deformation mechanisms offer support for improved control of photo-responsive morphing structures with a single blue-green polarized light source.
C1 [Wang, Hongbo; Oates, William S.] Florida A&M, Dept Mech Engn, FCAAP, Tallahassee, FL 32310 USA.
   [Wang, Hongbo; Oates, William S.] Florida State Univ, Tallahassee, FL 32310 USA.
   [Lee, Kyung Min; White, Timothy J.] USAF, Mat & Mfg Directorate, Res Lab, Wright Patterson AFB, OH 45433 USA.
RP Oates, WS (reprint author), Florida A&M, Dept Mech Engn, FCAAP, Tallahassee, FL 32310 USA.
EM woates@eng.fsu.edu
RI White, Timothy/D-4392-2012
FU DARPA YFA [N66001-09-1-2105]; sub-contract through the Materials and
   Manufacturing Directorate of the Air Force Research Laboratory
   [FA8650-09-D-5434]; NSF CAREER award [028796]
FX The authors gratefully acknowledge support through the DARPA YFA grant
   N66001-09-1-2105, a sub-contract through the Materials and Manufacturing
   Directorate of the Air Force Research Laboratory (FA8650-09-D-5434), and
   an NSF CAREER award (grant number 028796). Any opinions, findings, and
   conclusions or recommendations expressed in this publication are those
   of the authors and do not necessarily reflect the views of the funding
   sponsors.
NR 46
TC 11
Z9 11
U1 3
U2 41
PU WILEY-V C H VERLAG GMBH
PI WEINHEIM
PA BOSCHSTRASSE 12, D-69469 WEINHEIM, GERMANY
SN 1022-1344
J9 MACROMOL THEOR SIMUL
JI Macromol. Theory Simul.
PD JUN
PY 2012
VL 21
IS 5
BP 285
EP 301
DI 10.1002/mats.201100089
PG 17
WC Polymer Science
SC Polymer Science
GA 960LF
UT WOS:000305388600003
ER

PT J
AU Trickler, WJ
   Lantz, SM
   Schrand, AM
   Robinson, BL
   Newport, GD
   Schlager, JJ
   Paule, MG
   Slikker, W
   Biris, AS
   Hussain, SM
   Ali, SF
AF Trickler, William J.
   Lantz, Susan M.
   Schrand, Amanda M.
   Robinson, Bonnie L.
   Newport, Glenn D.
   Schlager, John J.
   Paule, Merle G.
   Slikker, William
   Biris, Alexandru S.
   Hussain, Saber M.
   Ali, Syed F.
TI Effects of copper nanoparticles on rat cerebral microvessel endothelial
   cells
SO NANOMEDICINE
LA English
DT Article
DE blood-brain barrier; copper nanoparticle; neuroinflammation;
   neurotoxicity; rat brain microvessel endothelial cell
ID BLOOD-BRAIN-BARRIER; NECROSIS-FACTOR-ALPHA; IN-VITRO; DEPENDENT
   TOXICITY; TNF-ALPHA; PERMEABILITY; MODEL; TRANSPORT; ENCEPHALOPATHY;
   DYSFUNCTION
AB The purpose of the current study was to determine whether copper nanoparticles (Cu-NPs) can induce the release of proinflammatory mediators that influence the restrictive characteristics of the blood-brain barrier. Material & methods: Confluent rat brain microvessel endothelial cells (rBMECs) were treated with well-characterized Cu-NPs (40 or 60 nm). Cytotoxicity of the Cu-NPs was evaluated by cell proliferation assay (1.5-50 mu g/ml). The extracellular concentrations of proinflammatory mediators (IL-1 beta, IL-2, TNF-alpha and prostaglandin E-2) were evaluated by ELISA. Results: The exposure of Cu-NPs at low concentrations increases cellular proliferation of rBMECs, by contrast, high concentrations induce toxicity. Prostaglandin E-2 release was significantly increased (threefold; 8 h) for Cu-NPs (40 and 60 nm). The extracellular levels of both TNF-alpha and IL-1 beta were significantly elevated following exposure to Cu-NPs. The P-apparent ratio, as an indicator of increased permeability of rBMEC was approximately twofold for Cu-NPs (40 and 60 nm). Conclusion: These data suggest that Cu-NPs can induce rBMEC, proliferation at low concentrations and/or induce blood-brain barrier toxicity and potential neurotoxicity at high concentrations.
C1 [Trickler, William J.; Lantz, Susan M.; Robinson, Bonnie L.; Newport, Glenn D.; Paule, Merle G.; Slikker, William; Ali, Syed F.] US FDA, Neurochem Lab, Div Neurotoxicol, Natl Ctr Toxicol Res, Jefferson, AR 72079 USA.
   [Schrand, Amanda M.; Schlager, John J.; Hussain, Saber M.] USAF, Appl Biotechnol Branch HPW RHPB 711, Human Effectiveness Directorate, Res Lab, Wright Patterson AFB, OH 45433 USA.
   [Biris, Alexandru S.] Univ Arkansas, Little Rock, AR 72079 USA.
RP Ali, SF (reprint author), US FDA, Neurochem Lab, Div Neurotoxicol, Natl Ctr Toxicol Res, HFT-132,3900 NCTR Rd, Jefferson, AR 72079 USA.
EM syed.ali@fda.hhs.gov
FU US Air Force Research Laboratory at the National Center for
   Toxicological Research/US FDA (AR, USA); US Department of Energy, US Air
   Force Research Laboratory/RHPB; FDA
FX This research was supported, in part, by an appointment to the
   Postgraduate Research Participation Program with the US Air Force
   Research Laboratory at the National Center for Toxicological Research/US
   FDA (AR, USA) administered by the Oak Ridge Institute of Science and
   Education (TN, USA) through an interagency agreement between the US
   Department of Energy, US Air Force Research Laboratory/RHPB and the FDA.
   Furthermore, the authors are responsible fir the content and writing of
   the manuscript and do not necessarily reflect the position of the US
   Government or FDA, nor does mention of trade names or commercial
   products constitute endorsement or recommendation for use. The authors
   have no other relevant affiliations or financial involvement with any
   organization or entity with a financial interest in or financial
   conflict with the subject matter or materials discussed in the
   manuscript apart from those disclosed.
NR 41
TC 18
Z9 18
U1 1
U2 6
PU FUTURE MEDICINE LTD
PI LONDON
PA UNITEC HOUSE, 3RD FLOOR, 2 ALBERT PLACE, FINCHLEY CENTRAL, LONDON, N3
   1QB, ENGLAND
SN 1743-5889
J9 NANOMEDICINE-UK
JI Nanomedicine
PD JUN
PY 2012
VL 7
IS 6
BP 835
EP 846
DI 10.2217/NNM.11,154
PG 12
WC Biotechnology & Applied Microbiology; Nanoscience & Nanotechnology
SC Biotechnology & Applied Microbiology; Science & Technology - Other
   Topics
GA 964RC
UT WOS:000305713400012
PM 22339089
ER

PT J
AU Ball, DW
AF Ball, David W.
TI Maxwell's Equations, Part VII
SO SPECTROSCOPY
LA English
DT Article
C1 [Ball, David W.] Cleveland State Univ, Cleveland, OH 44115 USA.
RP Ball, DW (reprint author), US AF Acad, Washington, DC USA.
EM d.ball@csuohio.edu
NR 8
TC 0
Z9 0
U1 0
U2 0
PU ADVANSTAR COMMUNICATIONS INC
PI DULUTH
PA 131 W 1ST STREET, DULUTH, MN 55802 USA
SN 0887-6703
J9 SPECTROSCOPY-US
JI Spectroscopy
PD JUN
PY 2012
VL 27
IS 6
BP 20
EP +
PG 6
WC Spectroscopy
SC Spectroscopy
GA 961CP
UT WOS:000305441800002
ER

PT J
AU Bebarta, VS
   Pitotti, RL
   Dixon, P
   Lairet, JR
   Bush, A
   Tanen, DA
AF Bebarta, Vikhyat S.
   Pitotti, Rebecca L.
   Dixon, Patricia
   Lairet, Julio R.
   Bush, Anneke
   Tanen, David A.
TI Hydroxocobalamin Versus Sodium Thiosulfate for the Treatment of Acute
   Cyanide Toxicity in a Swine (Sus scrofa) Model
SO ANNALS OF EMERGENCY MEDICINE
LA English
DT Article
ID INDUCED CARDIAC-ARREST; SMOKE-INHALATION; NITRIC-OXIDE; GUINEA-PIGS;
   ANTIDOTE; PHARMACOKINETICS; INTOXICATION; EFFICACY; INJURY
AB Study objective: We compare the efficacy of hydroxocobalamin to sodium thiosulfate to reverse the depressive effects on mean arterial pressure in a swine model of acute cyanide toxicity and gain a better understanding of the mechanism of action of the hydroxocobalamin in reversal of the toxicity.
   Methods: Swine were intubated, anesthetized, and instrumented with central arterial and venous lines and a pulmonary artery catheter. Animals (n=36) were randomly assigned to one of 3 groups: hydroxocobalamin alone (150 mg/kg), sodium thiosulfate alone (413 mg/kg), or hydroxocobalamin (150 mg/kg)+sodium thiosulfate (413 mg/kg) and monitored for 60 minutes after the start of antidotal infusion. Cyanide was infused until severe hypotension developed, defined as blood pressure 50% of baseline mean arterial pressure. Repeated-measures ANOVA was used to determine statistically significant changes between groups over time.
   Results: Time to hypotension (25, 28, and 33 minutes), cyanide dose at hypotension (4.7, 5.0, and 5.6 mg/kg), and mean cyanide blood levels (3.2, 3.7, and 3.8 mu g/mL) and lactate levels (7, 8.2, 8.3 and mmol/L) were similar. All 12 animals in the sodium thiosulfate group died compared with 2 of 12 in the hydroxocobalamin/sodium thiosulfate group and 1 of 12 in hydroxocobalamin group. No statistically significant differences were detected between the hydroxocobalamin and hydroxocobalamin/sodium thiosulfate groups for carbon monoxide, mean arterial pressure, cyanide levels, or mortality at 60 minutes. Lactate level (2.6 versus 2.1 mmol/L), pH (7.44 versus 7.42), and bicarbonate level (25 versus 26 mEq/L) at 60 minutes were also similar between groups.
   Conclusion: Sodium thiosulfate failed to reverse cyanide-induced shock in our swine model of severe cyanide toxicity. Further, sodium thiosulfate was not found to be effective when added to hydroxocobalamin in the treatment of cyanide-induced shock. Hydroxocobalamin alone was again found to be effective for severe cyanide toxicity. [Ann Emerg Med. 2012;59:532-539.]
C1 [Bebarta, Vikhyat S.; Pitotti, Rebecca L.; Lairet, Julio R.] Wilford Hall USAF Med Ctr, Brooke Army Med Ctr, Dept Emergency Med, San Antonio, TX 78236 USA.
   [Dixon, Patricia; Bush, Anneke] Wilford Hall USAF Med Ctr, Brooke Army Med Ctr, Div Clin Res, San Antonio, TX 78236 USA.
   [Tanen, David A.] USN, Med Ctr, Dept Emergency Med, San Diego, CA 92152 USA.
RP Bebarta, VS (reprint author), Wilford Hall USAF Med Ctr, Brooke Army Med Ctr, Dept Emergency Med, San Antonio, TX 78236 USA.
EM vikbebarta@yahoo.com
RI bebarta, vikhyat/K-3476-2015
FU US Air Force Office of the Surgeon General
FX By Annals policy, all authors are required to disclose any and all
   commercial, financial, and other relationships in any way related to the
   subject of this article as per ICMJE conflict of interest guidelines
   (see www.icmje.org). The US Air Force Office of the Surgeon General
   funded this study.
NR 38
TC 18
Z9 19
U1 1
U2 2
PU MOSBY-ELSEVIER
PI NEW YORK
PA 360 PARK AVENUE SOUTH, NEW YORK, NY 10010-1710 USA
SN 0196-0644
J9 ANN EMERG MED
JI Ann. Emerg. Med.
PD JUN
PY 2012
VL 59
IS 6
BP 532
EP 539
DI 10.1016/j.annemergmed.2012.01.022
PG 8
WC Emergency Medicine
SC Emergency Medicine
GA 959HA
UT WOS:000305302300018
PM 22387086
ER

PT J
AU Ambard, PD
   Ambard, LK
AF Ambard, Philip D.
   Ambard, Linda K.
TI Effects of Narrative Script Advance Organizer Strategies Used to
   Introduce Video in the Foreign Language Classroom
SO FOREIGN LANGUAGE ANNALS
LA English
DT Article
DE Spanish; action research; advance organizer; foreign language in higher
   education; second language learning; video-based instruction
ID CULTURE; INSTRUCTION; STUDENTS; TEXT
AB The study compared participant comprehension of foreign language video content using two advance organizer (AO) strategies while exploring the benefits of AOs as proficiency increases. Participants were 50 advanced-beginner Spanish college students in three sections. Collaborative reading condition participants read a target language narrative video script aloud in groups, watched the video of the script, and took a test. Individual reading condition participants read the same script quietly before watching the video and taking the test. Control group participants did not read the script before watching the video and taking the test. The study was conducted at the start and end of the semester. Results indicate that AOs increased video comprehension. Researchers concluded that learners benefit to similar degrees from access to AOs as proficiency increases.
C1 [Ambard, Philip D.] USAF Acad, Dept Foreign Languages, Colorado Springs, CO 80840 USA.
   [Ambard, Linda K.] Ansbach Army Post, Ansbach, Germany.
RP Ambard, PD (reprint author), USAF Acad, Dept Foreign Languages, Colorado Springs, CO 80840 USA.
NR 31
TC 2
Z9 2
U1 1
U2 18
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 0015-718X
J9 FOREIGN LANG ANN
JI Foreign Lang. Ann.
PD SUM
PY 2012
VL 45
IS 2
BP 203
EP 228
DI 10.1111/j.1944-9720.2012.01189.x
PG 26
WC Education & Educational Research; Linguistics
SC Education & Educational Research; Linguistics
GA 958YX
UT WOS:000305278000006
ER

PT J
AU Shiffler, D
   Cauffman, SR
   Cross, AW
AF Shiffler, Don
   Cauffman, Stephen R.
   Cross, Adrian W.
TI The Fourteenth Special Issue on High-Power Microwave Generation
SO IEEE TRANSACTIONS ON PLASMA SCIENCE
LA English
DT Editorial Material
C1 [Shiffler, Don] USAF, Res Lab, Directed Energy Directorate, Kirtland AFB, NM 87117 USA.
   [Cauffman, Stephen R.] Commun & Power Ind, Microwave Power Prod Div, Palo Alto, CA 94303 USA.
   [Cross, Adrian W.] Univ Strathclyde, Dept Phys, SUPA, Glasgow G4 ONG, Lanark, Scotland.
RP Shiffler, D (reprint author), USAF, Res Lab, Directed Energy Directorate, Kirtland AFB, NM 87117 USA.
EM don.shiffler@kirtland.af.mil; steve.cauffman@cpii.com;
   a.w.cross@strath.ac.uk
NR 0
TC 0
Z9 0
U1 0
U2 3
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 0093-3813
J9 IEEE T PLASMA SCI
JI IEEE Trans. Plasma Sci.
PD JUN
PY 2012
VL 40
IS 6
SI SI
BP 1493
EP 1494
DI 10.1109/TPS.2012.2197157
PN 1
PG 2
WC Physics, Fluids & Plasmas
SC Physics
GA 957IE
UT WOS:000305153900001
ER

PT J
AU Estep, NA
   Petrosky, JC
   McClory, JW
   Kim, Y
   Terzuoli, AJ
AF Estep, Nicholas A.
   Petrosky, James C.
   McClory, John W.
   Kim, Y.
   Terzuoli, Andrew J., Jr.
TI Electromagnetic Interference and Ionizing Radiation Effects on CMOS
   Devices
SO IEEE TRANSACTIONS ON PLASMA SCIENCE
LA English
DT Article
DE CMOS; electromagnetic compatibility; electromagnetic coupling;
   electromagnetic interference; gamma irradiation effects
ID MICROWAVE INTERFERENCE; SUSCEPTIBILITY; INVERTERS; OPERATION; HPEM
AB Integrated circuits are inherently complicated and made more by increasing transistor quantity and density. This trend potentially enhances concomitant effects of high-energy ionizing radiation and local or impressed electromagnetic interference (EMI). The reduced margin for signal error may counter any gain in radiation hardness from smaller device dimensions. Isolated EMI and ionizing radiation studies on circuits have been extensively conducted over the past 30 years. However, little focus has been placed on the combined effects. To investigate the effect of combined EMI and ionizing radiation, two complementary metal-oxide-semiconductor inverter technologies (CD4069 and SN74AUC1G04) were analyzed for their static performance in response to both EMI and gamma radiation up to 132 krd(Si). The combined EMI and gamma radiation environment, compared to the isolated effects of each, produced the most severe degradation in inverter performance for both device technologies.
C1 [Estep, Nicholas A.; Kim, Y.; Terzuoli, Andrew J., Jr.] USAF, Inst Technol, Dept Elect Engn, Wright Patterson AFB, OH 45433 USA.
   [Petrosky, James C.] USAF, Inst Technol, Dept Engn Phys, Wright Patterson AFB, OH 45433 USA.
RP Estep, NA (reprint author), USAF, Res Lab, High Power Microwave Div, Directed Energy Directorate, Kirtland AFB, NM 87117 USA.
EM Nicholas.Estep@us.af.mil; James.Petrosky@afit.edu;
   john.mcclory@afit.edu; Yong.Kim@afit.edu; Andrew.Terzouli@afit.edu
OI McClory, John/0000-0002-4303-2729
FU High Power Microwave Division, Directed Energy Directorate, U.S. Air
   Force Research Laboratory
FX This work was supported in part by the High Power Microwave Division,
   Directed Energy Directorate, U.S. Air Force Research Laboratory.
NR 22
TC 1
Z9 1
U1 2
U2 7
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 0093-3813
J9 IEEE T PLASMA SCI
JI IEEE Trans. Plasma Sci.
PD JUN
PY 2012
VL 40
IS 6
SI SI
BP 1495
EP 1501
DI 10.1109/TPS.2012.2193600
PN 1
PG 7
WC Physics, Fluids & Plasmas
SC Physics
GA 957IE
UT WOS:000305153900002
ER

PT J
AU Andreev, AD
   Hendricks, KJ
AF Andreev, Andrey D.
   Hendricks, Kyle J.
TI ICEPIC Simulation of a Strapped Nonrelativistic High-Power CW UHF
   Magnetron With a Solid Cathode Operating in the Space-Charge Limited
   Regime
SO IEEE TRANSACTIONS ON PLASMA SCIENCE
LA English
DT Article
DE Computer simulations; high power microwave generation; magnetrons;
   virtual prototyping
ID IN-CELL SIMULATIONS
AB This paper presents the results of particle-in-cell (PIC) simulations of a strapped nonrelativistic ultrahigh-frequency (890-915 MHz) magnetron whose geometrical and operational parameters are close to the parameters of the high-power industrial heating magnetron producing 75-100 kW of continuous-wave microwave power. Simulations of the magnetron operation are performed without artificial RF priming, but rather in natural conditions, when magnetron oscillations start to grow from electromagnetic "noise." This approach reveals many important details of the "preoscillating" phase of the magnetron operation. It is found, for example, that the start-up time of the magnetron with a solid cathode, operating in the explosive electron emission mode, is determined by the time needed for the electron cloud formed near the cathode to reach the anode, where the fringing dc electric fields of the periodic anode structure begin to perturb the electron cloud and to facilitate the magnetron oscillations to start to grow. The PIC simulations are performed at one magnetic field (0.238 T) and a range of applied voltages, allowing the magnetron to operate in the p mode characterized by five magnetron spokes and TE51-like mode of the induced electromagnetic field distribution within the resonant system of the ten-cavity magnetron.
C1 [Andreev, Andrey D.] Raytheon Ktech, Directed Energy Div, Raytheon Missile Syst, Adv Secur & Directed Energy Syst, Albuquerque, NM 87123 USA.
   [Hendricks, Kyle J.] USAF, Res Lab, Directed Energy Directorate, High Power Microwave Div, Kirtland AFB, NM 87117 USA.
RP Andreev, AD (reprint author), Raytheon Ktech, Directed Energy Div, Raytheon Missile Syst, Adv Secur & Directed Energy Syst, Albuquerque, NM 87123 USA.
EM aandreev@ktech.com; kyle.hendricks@kirtland.af.mil
NR 30
TC 4
Z9 4
U1 0
U2 3
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 0093-3813
J9 IEEE T PLASMA SCI
JI IEEE Trans. Plasma Sci.
PD JUN
PY 2012
VL 40
IS 6
SI SI
BP 1551
EP 1562
DI 10.1109/TPS.2011.2177997
PN 1
PG 12
WC Physics, Fluids & Plasmas
SC Physics
GA 957IE
UT WOS:000305153900009
ER

PT J
AU Fleming, TP
   Lambrecht, M
   Mardahl, P
AF Fleming, Timothy P.
   Lambrecht, Michael
   Mardahl, Peter
TI Design and Simulation of a Mega-Watt Class Nonrelativistic Magnetron
SO IEEE TRANSACTIONS ON PLASMA SCIENCE
LA English
DT Article
DE Conventional magnetron; high-power microwave; mode competition
AB Numerical simulations of a prototype conventional magnetron capable of an RF output power exceeding 1.0 MW are presented. Magnetron design evaluation is carried out via numerical simulation using the 3-D Improved Concurrent Electromagnetic Particle-in-Cell code. The magnetron was capable of oscillating in the p mode with little mode competition at 655 MHz over a range of magnetic fields extending from B = 0.186 to B = 0.261 T and voltages ranging from 40 to 64 kV. RF Output power ranged from 400 kW to 2.1 MW over these voltages with efficiencies typically at 60%. RF power propagation upstream was identified as a major source of loss in the design.
C1 [Fleming, Timothy P.; Lambrecht, Michael; Mardahl, Peter] USAF, Res Lab, Albuquerque, NM 87117 USA.
RP Fleming, TP (reprint author), USAF, Res Lab, Albuquerque, NM 87117 USA.
EM timothy.fleming@kirtland.af.mil; michael.lambrecht@kirtland.af.mil;
   peter.mardahl@kirtland.af.mil
NR 11
TC 5
Z9 5
U1 0
U2 1
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 0093-3813
J9 IEEE T PLASMA SCI
JI IEEE Trans. Plasma Sci.
PD JUN
PY 2012
VL 40
IS 6
SI SI
BP 1563
EP 1568
DI 10.1109/TPS.2012.2187288
PN 1
PG 6
WC Physics, Fluids & Plasmas
SC Physics
GA 957IE
UT WOS:000305153900010
ER

PT J
AU Zacher, LL
   Browning, R
   Bisnett, T
   Bennion, JR
   Postlewaite, RC
   Baird, CP
AF Zacher, Lisa L.
   Browning, Robert
   Bisnett, Teresa
   Bennion, James R.
   Postlewaite, R. Craig
   Baird, Coleen P.
TI Clarifications From Representatives of the Department of Defense
   Regarding the Article "Recommendations for Medical Screening and
   Diagnostic Evaluation for Postdeployment Lung Disease in Returning US
   Warfighters"
SO JOURNAL OF OCCUPATIONAL AND ENVIRONMENTAL MEDICINE
LA English
DT Editorial Material
C1 [Zacher, Lisa L.] USA, Brooke Army Med Ctr, Off Surg Gen, Ft Sam Houston, TX USA.
   [Browning, Robert] USN, Walter Reed Natl Mil Med Ctr, Washington, DC USA.
   [Bisnett, Teresa] USAF, Washington, DC 20330 USA.
   [Bennion, James R.] USAF, Med Support Agcy, Washington, DC 20330 USA.
   [Postlewaite, R. Craig] Off Assistant Secretary Def Hlth Affairs, Falls Church, VA USA.
   [Baird, Coleen P.] USA, Publ Hlth Command, Aberdeen, MD USA.
RP Baird, CP (reprint author), USA, Publ Hlth Command, 5158 Blackhawk Rd, Aberdeen Proving Ground, MD 21010 USA.
EM coleen.weese@us.army.mil
NR 7
TC 7
Z9 7
U1 0
U2 1
PU LIPPINCOTT WILLIAMS & WILKINS
PI PHILADELPHIA
PA 530 WALNUT ST, PHILADELPHIA, PA 19106-3621 USA
SN 1076-2752
J9 J OCCUP ENVIRON MED
JI J. Occup. Environ. Med.
PD JUN
PY 2012
VL 54
IS 6
SI SI
BP 760
EP 761
DI 10.1097/JOM.0b013e31824fe102
PG 2
WC Public, Environmental & Occupational Health
SC Public, Environmental & Occupational Health
GA 957MA
UT WOS:000305165900016
PM 22684322
ER

PT J
AU Lambert, DE
   Weiderhold, J
   Osborn, J
   Hopson, MV
AF Lambert, David E.
   Weiderhold, Joseph
   Osborn, John
   Hopson, Michael V.
TI Explosively Driven Fragmentation Experiments for Continuum Damage
   Modeling
SO JOURNAL OF PRESSURE VESSEL TECHNOLOGY-TRANSACTIONS OF THE ASME
LA English
DT Article
ID FRACTURE
AB The explosively loaded right-circular tube geometry is used as the basis for dynamic fracture and fragmentation modeling. Details of the cylinder configuration are investigated to prescribe controlled loading conditions of uniaxial stress and plane strain. Earlier works by Goto et al. [2008, "Investigation of the Fracture and Fragmentation of Explosively Driven Rings and Cylinders," Int. J. Impact Eng. 35(12), pp. 1547-1556] had used thin-walled tubes to provide plane strain loading and shorter "rings" to establish uniaxial stress conditions. This paper extends on that work to look at alternative cylinder dimensions and metals of interest. A tungsten alloy, Aero-224, and a high strength steel, Eglin Steel (ES-1), are the subject metals. Transient continuum-mechanics simulations evaluated whether the stress triaxiality conditions were being met as design parameters of cylinder material, cylinder wall-thickness, cylinder length, and initiation configuration were varied. Design analysis shows that the thin cylinders of ES-1 steel do establish the desired plane strain conditions as it expands to failure. Ultra-high speed photography experiments verify the time of fracture and correlate casewall expansion and velocity measurements. Synchronization of the code and diagnostics measurements is presented as a valuable analysis method. On the other hand, rings (i.e., uniaxial stress) of the Aero-224 tungsten alloy were failing just short of uniaxial stress approximating conditions. Analysis of the Aero-224 rings indicated it must be capable of achieving at least a 25% strain to failure in order to have the triaxiality condition satisfied. Strain to failure measurements directly from recovered fragments were less than 14%. Nevertheless, a Weibull distribution was fit to the empirical data set and used to drive a statistically compensated fracture model. Results and discussion of the failure strain distribution and the ability for continuum codes to adequately conduct such simulations are presented. [DOI: 10.1115/1.4006119]
C1 [Lambert, David E.; Weiderhold, Joseph] USAF, Res Lab, Munit Directorate, Eglin AFB, FL 32542 USA.
   [Osborn, John] Gen Dynam Ordnance & Tact Syst, Niceville, FL 32579 USA.
   [Hopson, Michael V.] USN, Ctr Surface Warfare, Dahlgren Div, Dahlgren, VA 22448 USA.
RP Lambert, DE (reprint author), USAF, Res Lab, Munit Directorate, Eglin AFB, FL 32542 USA.
NR 10
TC 1
Z9 2
U1 1
U2 8
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 2012
VL 134
IS 3
AR 031209
DI 10.1115/1.4006119
PG 7
WC Engineering, Mechanical
SC Engineering
GA 956VJ
UT WOS:000305117300017
ER

PT J
AU Fellner, AN
   Matthews, G
   Shockley, KD
   Warm, JS
   Zeidner, M
   Karlov, L
   Roberts, RD
AF Fellner, Angela N.
   Matthews, Gerald
   Shockley, Kevin D.
   Warm, Joel S.
   Zeidner, Moshe
   Karlov, Lisa
   Roberts, Richard D.
TI Using emotional cues in a discrimination learning task: Effects of trait
   emotional intelligence and affective state
SO JOURNAL OF RESEARCH IN PERSONALITY
LA English
DT Article
DE Trait emotional intelligence; Cognitive ability; Discrimination
   learning; Stress; Implicit processes
ID META-MOOD SCALE; REACTIVITY; IMPLICIT; MEMORY; METAANALYSIS;
   RECOGNITION; PERCEPTION; ENGAGEMENT; VALIDITY; CONTEXT
AB Individuals may differ in their ability to learn the significance of emotional cues within a specific context. If so, trait emotional intelligence (El) may be associated with faster cue learning. This study (N = 180) tested whether trait El predicts faster learning of a critical cue for discriminating "terrorists" from "non-terrorists", using virtual-reality heads as stimuli. The critical cue was either facial emotion (positive or negative), or a neutral feature (hat size). Cognitive ability and subjective state were also assessed. Participants were faster to learn with an emotive cue. Surprisingly, high trait El was correlated with poorer performance, especially early in learning. Subjective distress was also associated with impaired learning to emotive cues. (C) 2012 Elsevier Inc. All rights reserved.
C1 [Fellner, Angela N.; Matthews, Gerald; Shockley, Kevin D.] Univ Cincinnati, Dept Psychol, Cincinnati, OH 45221 USA.
   [Warm, Joel S.] USAF, Res Lab, Wright Patterson AFB, OH 45433 USA.
   [Zeidner, Moshe] Univ Haifa, Lab Res Personal Emot & Individual Differences, IL-31999 Haifa, Israel.
   [Karlov, Lisa] Univ Sydney, Sch Psychol, Sydney, NSW 2006, Australia.
   [Roberts, Richard D.] Educ Testing Serv, Philadelphia, PA USA.
RP Matthews, G (reprint author), Univ Cincinnati, Dept Psychol, Cincinnati, OH 45221 USA.
EM gerald.matthews@uc.edu
NR 53
TC 5
Z9 6
U1 4
U2 13
PU ACADEMIC PRESS INC ELSEVIER SCIENCE
PI SAN DIEGO
PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA
SN 0092-6566
EI 1095-7251
J9 J RES PERS
JI J. Res. Pers.
PD JUN
PY 2012
VL 46
IS 3
BP 239
EP 247
DI 10.1016/j.jrp.2012.01.004
PG 9
WC Psychology, Social
SC Psychology
GA 959JH
UT WOS:000305308200001
ER

PT J
AU Ghoreyshi, M
   Jirasek, A
   Cummings, RM
AF Ghoreyshi, Mehdi
   Jirasek, Adam
   Cummings, Russell M.
TI Computational Investigation into the Use of Response Functions for
   Aerodynamic-Load Modeling
SO AIAA JOURNAL
LA English
DT Article; Proceedings Paper
CT 29th AIAA Applied Aerodynamics Conference
CY JUN 27-30, 2011
CL Honolulu, HI
SP AIAA
ID DETACHED-EDDY SIMULATION; NONLINEAR UNSTEADY AERODYNAMICS; REDUCED-ORDER
   MODELS; GENERALIZED FORMULATION; FLUID-DYNAMICS; IDENTIFICATION; FLOWS;
   SYSTEMS
AB The generation of reduced-order models for the evaluation of unsteady and nonlinear aerodynamic loads are investigated. The reduced-order model considered is an indicial theory based on the convolution of step functions with the derivative of the input signal. The step functions are directly calculated using the results of unsteady Reynolds-averaged Navier-Stokes simulations and a grid-movement tool. Results are reported for a two-dimensional airfoil and an unmanned combat air vehicle configuration. Wind-tunnel data are first used to validate the prediction of static and unsteady coefficients at both low and high angles of attack, with good agreement obtained for all cases. The generation of the aerodynamic models is then described. The focus of the paper next shifts to assess the validity of studied reduced-order models with respect to new maneuvers. This is accomplished by comparison of the model output with time-accurate computational fluid dynamics simulations. Results presented demonstrate the feasibility of the approach for modeling unsteady aerodynamic loads and response-type computational fluid dynamics calculations.
C1 [Ghoreyshi, Mehdi; Jirasek, Adam] USAF Acad, Modeling & Simulat Res Ctr, Colorado Springs, CO 80840 USA.
   [Cummings, Russell M.] USAF Acad, Dept Aeronaut, Colorado Springs, CO 80840 USA.
RP Ghoreyshi, M (reprint author), USAF Acad, Modeling & Simulat Res Ctr, Colorado Springs, CO 80840 USA.
NR 73
TC 10
Z9 10
U1 0
U2 1
PU AMER INST AERONAUT ASTRONAUT
PI RESTON
PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091-4344 USA
SN 0001-1452
J9 AIAA J
JI AIAA J.
PD JUN
PY 2012
VL 50
IS 6
BP 1314
EP 1327
DI 10.2514/1.J051428
PG 14
WC Engineering, Aerospace
SC Engineering
GA 952JB
UT WOS:000304787700008
ER

PT J
AU Lochtefeld, DF
   Ciarallo, FW
AF Lochtefeld, Darrell F.
   Ciarallo, Frank W.
TI Multiobjectivization via Helper-Objectives with the Tunable Objectives
   Problem
SO IEEE TRANSACTIONS ON EVOLUTIONARY COMPUTATION
LA English
DT Article
DE Helper-objectives; multiobjectivization; tunable objectives problem
   (TOP)
ID FITNESS LANDSCAPES; ALGORITHMS; NEUTRALITY; EPISTASIS; NKP
AB Multiobjectivization, the optimization of a single-objective problem by adding objectives, has recently received interest by researchers. Studying multiobjectivization on an abstract problem can assist in understanding the fundamental drivers of the improvements in performance that multiobjectivization achieves in some situations. Previously created abstract problems do not appear to provide the modeling power needed to study the benefits of this new family of optimization techniques. The tunable objectives problem (TOP) model is introduced to help demonstrate how problem features such as objective-convolution, multiple layer epistasis, the presence of local optima, and layered problem structure are related to the performance of multiobjectivization via helper objectives. Experiments using TOP demonstrate how multiobjectivization via helpers improves the signal-to-noise in a genetic algorithm and identifies several general problem difficulties that, when present, are likely to increase the need for multiobjectivization.
C1 [Lochtefeld, Darrell F.] USAF, Res Lab, Wright Patterson AFB, OH 45433 USA.
   [Ciarallo, Frank W.] Wright State Univ, Coll Engn & Comp Sci, Dept Biomed Ind & Human Factors Engn, Dayton, OH 45435 USA.
RP Lochtefeld, DF (reprint author), USAF, Res Lab, 711th Human Performance Wing, Wright Patterson AFB, OH 45433 USA.
EM darrell.lochtefeld@wpafb.af.mil; frank.ciarallo@wright.edu
NR 32
TC 7
Z9 7
U1 0
U2 6
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 1089-778X
J9 IEEE T EVOLUT COMPUT
JI IEEE Trans. Evol. Comput.
PD JUN
PY 2012
VL 16
IS 3
BP 373
EP 390
DI 10.1109/TEVC.2011.2136345
PG 18
WC Computer Science, Artificial Intelligence; Computer Science, Theory &
   Methods
SC Computer Science
GA 952WA
UT WOS:000304823400005
ER

PT J
AU Stanciulescu, I
   Mitchell, T
   Chandra, Y
   Eason, T
   Spottswood, M
AF Stanciulescu, Ilinca
   Mitchell, Toby
   Chandra, Yenny
   Eason, Thomas
   Spottswood, Michael
TI A lower bound on snap-through instability of curved beams under
   thermomechanical loads
SO INTERNATIONAL JOURNAL OF NON-LINEAR MECHANICS
LA English
DT Article
DE Snap-through; Finite element; Curved beam; Solid (continuum) elements;
   Thermomechanical loads
ID FINITE-ELEMENT-ANALYSIS; SUPERSONIC FLUTTER; POSTBUCKLING DYNAMICS;
   BIFURCATION DYNAMICS; COMPOSITE PLATES; TIMOSHENKO BEAMS; LARGE
   DEFLECTION; THERMAL LOADS; PANELS; TEMPERATURE
AB A non-linear finite element formulation (three dimensional continuum elements) is implemented and used for modeling dynamic snap-through in beams with initial curvature. We identify a non-trivial (non-flat) configuration of the beam at a critical temperature value below which the beam will no longer experience snap-through under any magnitude of applied quasi-static load for beams with various curvatures. The critical temperature is shown to successfully eliminate snap-through in dynamic simulations at quasistatic loading rates. Thermomechanical coupling is included in order to model a physically minimal amount of damping in the system, and the resulting post-snap vibrations are shown to be thermoelastically damped. We propose a test to determine the critical snap-free temperature for members of general geometry and loading pattern; the analogy between mechanical prestress and thermal strain that holds between the static and dynamic simulations is used to suggest a simple method for reducing the vulnerability of thin-walled structural members to dynamic snap-through in members of large initial curvature via the introduction of initial pretension. (C) 2011 Elsevier Ltd. All rights reserved.
C1 [Stanciulescu, Ilinca; Chandra, Yenny] Rice Univ, Dept Civil & Environm Engn, Houston, TX 77005 USA.
   [Mitchell, Toby] Univ Calif Berkeley, Dept Civil Engn, Berkeley, CA 94720 USA.
   [Eason, Thomas; Spottswood, Michael] USAF, Res Lab, Struct Sci Ctr, Wright Patterson AFB, OH USA.
RP Stanciulescu, I (reprint author), Rice Univ, Dept Civil & Environm Engn, 6100 Main St, Houston, TX 77005 USA.
EM ilinca@rice.edu
OI Stanciulescu, Ilinca/0000-0003-4515-0363
FU AFOSR [FA9550-09-1-0201]
FX The work has been funded in part by AFOSR under the Grant no.
   FA9550-09-1-0201. This support is greatly appreciated.
NR 30
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U1 2
U2 15
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 2012
VL 47
IS 5
BP 561
EP 575
DI 10.1016/j.ijnonlinmec.2011.10.004
PG 15
WC Mechanics
SC Mechanics
GA 953DX
UT WOS:000304848200015
ER

PT J
AU Tseng, CC
   Sikorski, RL
   Viskanta, R
   Chen, MY
AF Tseng, Charles C.
   Sikorski, Ruth L.
   Viskanta, Raymond
   Chen, Ming Y.
TI Effect of Foam Properties on Heat Transfer in High Temperature Open-Cell
   Foam Inserts
SO JOURNAL OF THE AMERICAN CERAMIC SOCIETY
LA English
DT Article
ID THERMAL-CONDUCTIVITY; INSULATION
AB Light weight materials such as foams can be used in thermal protection and/or thermal insulation systems. At high temperature (>1000 K), thermal radiation may be important or dominate heat transfer in the foam; however, studies based on more detailed thermal radiation analysis are limited. In this study, foams are considered to be semitransparent, because radiation can penetrate through the pore (or void) space and/or foam skeleton (solid matrix), depending on the materials from which the foams are made. Of particular interest in this study is to understand how the properties such as foam material, porosity, pore size, etc. affect thermal and radiant energy transfer. Physical and mathematical models are developed to account for conduction and radiation (absorption, emission and scattering) in the porous material. The spectral extinction coefficients of SiC foams are measured experimentally in the laboratory at room temperature, and the radiative transfer equation is solved using the spherical harmonics P-1-approximation. The predicted radiative heat fluxes in foams are compared with those based on the Rosseland diffusion approximation. Parametric calculations have been carried out, and the results are reported in the article for a range of parameters characterizing heat transfer in SiC foams of different porosities to identify desirable conditions for effectively reducing heat transfer in potential thermal protection concepts.
C1 [Chen, Ming Y.] USAF, Res Lab, AFRL RXBC, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA.
   [Tseng, Charles C.] USAF, Res Lab, AFRL RBSA, Air Vehicles Directorate, Wright Patterson AFB, OH 45433 USA.
   [Sikorski, Ruth L.] USAF, Res Lab, AFRL RZTS, Prop Directorate, Wright Patterson AFB, OH 45433 USA.
   [Viskanta, Raymond] Purdue Univ, Sch Mech Engn, W Lafayette, IN 47907 USA.
RP Chen, MY (reprint author), USAF, Res Lab, AFRL RXBC, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA.
EM Ming.Yung-Chen@wpafb.af.mil
FU Air Force Research Laboratory at Wright-Patterson AFB
   [FA8650-10-D-3037]; DOD at the Air Force Research Laboratory at
   Wright-Patterson AFB
FX This study was supported by the Air Force Research Laboratory at
   Wright-Patterson AFB under the contract number of FA8650-10-D-3037. This
   work was supported in part by a grant of computer time from the DOD High
   Performance Computing Modernization Program at the Air Force Research
   Laboratory at Wright-Patterson AFB.
NR 22
TC 6
Z9 6
U1 1
U2 20
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 0002-7820
EI 1551-2916
J9 J AM CERAM SOC
JI J. Am. Ceram. Soc.
PD JUN
PY 2012
VL 95
IS 6
BP 2015
EP 2021
DI 10.1111/j.1551-2916.2012.05177.x
PG 7
WC Materials Science, Ceramics
SC Materials Science
GA 952BU
UT WOS:000304765500039
ER

PT J
AU Carry, B
   Kaasalainen, M
   Merline, WJ
   Muller, TG
   Jorda, L
   Drummond, JD
   Berthier, J
   O'Rourke, L
   Durech, J
   Kuppers, M
   Conrad, A
   Tamblyn, P
   Dumas, C
   Sierks, H
AF Carry, B.
   Kaasalainen, M.
   Merline, W. J.
   Mueller, T. G.
   Jorda, L.
   Drummond, J. D.
   Berthier, J.
   O'Rourke, L.
   Durech, J.
   Kueppers, M.
   Conrad, A.
   Tamblyn, P.
   Dumas, C.
   Sierks, H.
CA OSIRIS Team
TI Shape modeling technique KOALA validated by ESA Rosetta at (21) Lutetia
SO PLANETARY AND SPACE SCIENCE
LA English
DT Article
DE Asteroid; (21) Lutetia; Disk-resolved imaging; KOALA; Rosetta
ID HUBBLE-SPACE-TELESCOPE; TRIAXIAL ELLIPSOID DIMENSIONS; ASTEROID
   LIGHTCURVE INVERSION; ADAPTIVE OPTICS IMAGES; STELLAR OCCULTATIONS;
   OPTIMIZATION METHODS; ROTATIONAL POLES; PHOTOMETRIC DATA; PHYSICAL
   MODELS; THERMAL PHYSICS
AB We present here a comparison of our results from ground-based observations of asteroid (21) Lutetia with imaging data acquired during the flyby of the asteroid by the ESA Rosetta mission. This flyby provided a unique opportunity to evaluate and calibrate our method of determination of size, 3-D shape, and spin of an asteroid from ground-based observations. Knowledge of certain observable physical properties of small bodies (e.g., size, spin, 3-D shape, and density) have far-reaching implications in furthering our understanding of these objects, such as composition, internal structure, and the effects of non-gravitational forces. We review the different observing techniques used to determine the above physical properties of asteroids and present our 3-D shape-modeling technique KOALA - Knitted Occultation, Adaptive-optics, and Lightcurve Analysis - which is based on multi-dataset inversion. We compare the results we obtained with KOALA, prior to the flyby, on asteroid (21) Lutetia with the high-spatial resolution images of the asteroid taken with the OSIRIS camera on-board the ESA Rosetta spacecraft during its encounter with Lutetia on 2010 July 10. The spin axis determined with KOALA was found to be accurate to within 2 degrees, while the KOALA diameter determinations were within 2% of the Rosetta-derived values. The 3-D shape of the KOALA model is also confirmed by the spectacular visual agreement between both 3-D shape models (KOALA pre- and OSIRIS post-flyby). We found a typical deviation of only 2 km at local scales between the profiles from KOALA predictions and OSIRIS images, resulting in a volume uncertainty provided by KOALA better than 10%. Radiometric techniques for the interpretation of thermal infrared data also benefit greatly from the KOALA shape model: the absolute size and geometric albedo can be derived with high accuracy, and thermal properties, for example the thermal inertia, can be determined unambiguously. The corresponding Lutetia analysis leads to a geometric albedo of 0.19 +/- 0.01 and a thermal inertia below 40 J m(-2) s(-0.5) K-1, both in excellent agreement with the Rosetta findings. We consider this to be a validation of the KOALA method. Because space exploration will remain limited to only a few objects, KOALA stands as a powerful technique to study a much larger set of small bodies using Earth-based observations. (C) 2011 Elsevier Ltd. All rights reserved.
C1 [Carry, B.; O'Rourke, L.; Kueppers, M.] ESA, European Space Astron Ctr, Madrid 28691, Spain.
   [Kaasalainen, M.] Tampere Univ Technol, FIN-33101 Tampere, Finland.
   [Merline, W. J.; Tamblyn, P.] SW Res Inst, Boulder, CO 80302 USA.
   [Mueller, T. G.] Max Planck Inst Extraterr Phys MPE, D-85748 Garching, Germany.
   [Jorda, L.] Univ Aix Marseille 1, Lab Astrophys Marseille, Marseille, France.
   [Drummond, J. D.] USAF, Directed Energy Directorate, Res Lab, Kirtland AFB, NM 87117 USA.
   [Berthier, J.] CNRS, Inst Mecan Celeste & Calcul Ephemerides, Observ Paris, UMR8028, F-75014 Paris, France.
   [Durech, J.] Charles Univ Prague, Fac Math & Phys, Astron Inst, CR-18000 Prague, Czech Republic.
   [Conrad, A.] Max Planck Inst Astron MPA, D-69117 Heidelberg, Germany.
   [Dumas, C.] European So Observ, Santiago 19001, Chile.
   [Sierks, H.] Max Planck Inst Sonnensyst Forsch MPS, D-37191 Katlenburg Lindau, Germany.
RP Carry, B (reprint author), ESA, European Space Astron Ctr, POB 78, Madrid 28691, Spain.
EM benoit.carry@esa.int
RI Kaasalainen, Mikko/G-4236-2014; Durech, Josef/C-5634-2017
OI Durech, Josef/0000-0003-4914-3646
FU DLR; CNES; ASI; MEC; NASA; SNSB; W.M. Keck Foundation; NASA Planetary
   Astronomy; NSF (Merline PI); Czech Science Foundation [GACR 209/10/0537]
FX We would like to thank the OSIRIS Team for use of the OSIRIS images.
   OSIRIS was built by a consortium of the Max-Planck-Institut fur
   Sonnensystemforschung, Lindau, Germany, the Laboratoire d'Astrophysique
   de Marseille, France, the Centro Interdipartimentale Studi e Attivita'
   Spaziali, University of Padova, Italy, the Instituto de Astrofisica de
   Andalucia, Granada, Spain, the Research and Scientific Support
   Department of the European Space Agency (ESA/ESTEC), Noordwijk, The
   Netherlands, the Instituto Nacional de Tecnica Aerospacial, Madrid,
   Spain, the Institut fur Datentechnik und Kommunikationsnetze der
   Technischen Universitat, Braunschweig and the Department of Astronomy
   and Space Physics of Uppsala University, Sweden. The support of the
   national funding agencies DLR, CNES, ASI, MEC, NASA, and SNSB is
   gratefully acknowledged. We thank the Rosetta Science Operations Center
   and the Rosetta Mission Operations Center for the successful flyby of
   (21) Lutetia. We would like to thank F. Preusker, S. Marchi, and J.-B.
   Vincent for providing their results ahead of publication. Herschel is an
   ESA space observatory with science instruments provided by European-led
   Principal Investigator consortia and with important participation from
   NASA. The thermal analysis is also based on observations collected at
   the European Southern Observatory, Chile: 079. C-0006. The KOALA shape
   model discussed here was based on imaging observations realized at the
   079.C-0493, and the W.M. Keck Observatory, which is operated as a
   scientific partnership among the California Institute of Technology, the
   University of California, and the National Aeronautics and Space
   Administration. The Observatory was made possible by the generous
   financial support of the W.M. Keck Foundation. We also thank our
   collaborators on Team Keck, the Keck science staff, for making possible
   some of these observations, and for observing time granted at Gemini
   Observatory under NOAO time allocation. This work was supported, in
   part, by the NASA Planetary Astronomy and NSF Planetary Astronomy
   Programs (Merline PI), and the work of J. Durech was supported by the
   Grant GACR 209/10/0537 of the Czech Science Foundation. This research
   used Miriade VO tool (Berthier et al., 2008) developed at IMCCE, and
   NASA's Astrophysics Data System. Thanks to all the developers!
NR 98
TC 27
Z9 29
U1 0
U2 8
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0032-0633
J9 PLANET SPACE SCI
JI Planet Space Sci.
PD JUN
PY 2012
VL 66
IS 1
SI SI
BP 200
EP 212
DI 10.1016/j.pss.2011.12.018
PG 13
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 953SG
UT WOS:000304892900022
ER

PT J
AU Kong, MG
   Ganguly, BN
   Hicks, RF
AF Kong, M. G.
   Ganguly, B. N.
   Hicks, R. F.
TI Plasma jets and and plasma bullets
SO PLASMA SOURCES SCIENCE & TECHNOLOGY
LA English
DT Editorial Material
ID CHEMICAL-VAPOR-DEPOSITION; ATMOSPHERIC-PRESSURE; TORCH
C1 [Kong, M. G.] Univ Loughborough, Sch Elect Elect & Syst Engn, Loughborough LE11 3TU, Leics, England.
   [Ganguly, B. N.] USAF, Res Lab, Wright Patterson AFB, OH 45433 USA.
   [Hicks, R. F.] Univ Calif Los Angeles, Dept Chem & Biomol Engn, Los Angeles, CA USA.
RP Kong, MG (reprint author), Univ Loughborough, Sch Elect Elect & Syst Engn, Loughborough LE11 3TU, Leics, England.
RI kong, michael/I-1574-2014
NR 40
TC 14
Z9 14
U1 0
U2 34
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0963-0252
J9 PLASMA SOURCES SCI T
JI Plasma Sources Sci. Technol.
PD JUN
PY 2012
VL 21
IS 3
AR 030201
DI 10.1088/0963-0252/21/3/030201
PG 5
WC Physics, Fluids & Plasmas
SC Physics
GA 952GZ
UT WOS:000304781800001
ER

PT J
AU Sands, BL
   Huang, SK
   Speltz, JW
   Niekamp, MA
   Schmidt, JB
   Ganguly, BN
AF Sands, Brian L.
   Huang, Shih K.
   Speltz, Jared W.
   Niekamp, Matthew A.
   Schmidt, Jacob B.
   Ganguly, Biswa N.
TI Dynamic electric potential redistribution and its influence on the
   development of a dielectric barrier plasma jet
SO PLASMA SOURCES SCIENCE & TECHNOLOGY
LA English
DT Article
ID STREAMER PROPAGATION
AB We investigate the initiation and development of a streamer-like plasma jet generated in a single-electrode dielectric barrier configuration at atmospheric pressure. The influence of dielectric boundary conditions on discharge propagation dynamics, morphology and current distribution was studied using spatially and temporally resolved emission spectroscopy and wide-bandwidth current measurements. A Phantom high-frame-rate camera system was used to visualize discharge inception as a function of pulse repetition frequency, which was varied between 1 and 20 kHz. At discharge inception, with the copper ring anode located 20 mm behind the capillary tip, the discharge propagated along the 2 mm diameter inner wall of the glass capillary regardless of pulse repetition frequency. The steady-state morphology remained annular below 6 kHz, but gradually transitioned to an axial morphology with the expansion of a dark wall sheath towards the anode as the pulse repetition frequency was increased to 10 kHz. In the axial mode, the ionization front steadily decelerated with a corresponding decrease in peak emission intensity, while emission from the residual plasma channel increased. This indicated a dynamic redistribution of electric potential from the ionization front into the residual plasma channel that was attributed to charge accumulation on the dielectric surface between discharge pulses.
C1 [Sands, Brian L.] Universal Energy Syst Inc, Dayton, OH 45432 USA.
   [Huang, Shih K.; Speltz, Jared W.; Niekamp, Matthew A.] Wright State Univ, Dept Mech & Mat Engn, Dayton, OH 45435 USA.
   [Schmidt, Jacob B.] Spectral Energies LLC, Dayton, OH 45431 USA.
   [Sands, Brian L.; Schmidt, Jacob B.; Ganguly, Biswa N.] USAF, Res Lab, Wright Patterson AFB, OH 45433 USA.
RP Sands, BL (reprint author), Universal Energy Syst Inc, 4401 Dayton Xenia Rd, Dayton, OH 45432 USA.
EM brian.sands@wpafb.af.mil
OI Schmidt, Jacob/0000-0002-9855-6319
FU Air Force Office of Scientific Research [FA8650-04-D-2404]
FX This material is based upon work supported by the Air Force Office of
   Scientific Research under Contract Award No FA8650-04-D-2404, in
   cooperation with the Wright State University Center for Advanced Power
   and Energy Conversion.
NR 25
TC 18
Z9 18
U1 1
U2 21
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0963-0252
J9 PLASMA SOURCES SCI T
JI Plasma Sources Sci. Technol.
PD JUN
PY 2012
VL 21
IS 3
AR 034009
DI 10.1088/0963-0252/21/3/034009
PG 11
WC Physics, Fluids & Plasmas
SC Physics
GA 952GZ
UT WOS:000304781800012
ER

PT J
AU Urabe, K
   Sands, BL
   Ganguly, BN
   Sakai, O
AF Urabe, Keiichiro
   Sands, Brian L.
   Ganguly, Biswa N.
   Sakai, Osamu
TI Temporally and spectrally resolved observation of a crossed-flow DBD
   plasma jet using pure helium and argon/acetone mixed gases
SO PLASMA SOURCES SCIENCE & TECHNOLOGY
LA English
DT Article
ID DISCHARGES; BULLETS
AB A crossed gas flow dielectric barrier discharge plasma jet using vertical pure helium and tilted argon/acetone mixed gases is investigated in this study, mainly by an intensified charge-coupled device (ICCD) camera. We have observed ionization-front propagation and transient glow discharge formation following the rise of the applied voltage pulse. A secondary discharge with a reverse polarity was ignited during the falling slope of the applied voltage pulse. In order to analyze excited-species distribution inside the discharge, optical interference filters were placed in front of the ICCD camera with the center wavelengths set at the excited species' transition. The imaging results revealed detailed discharge structures around the crossing point of the two gas flows including bridging emission between the two flows that changed position with time. We also discuss the ignition mechanisms of the secondary discharge considering effects of accumulated charge during the primary discharge and changes in the channel conductivity following the primary discharge.
C1 [Urabe, Keiichiro; Sakai, Osamu] Kyoto Univ, Dept Elect Sci & Engn, Nishikyo Ku, Kyoto 6158510, Japan.
   [Sands, Brian L.; Ganguly, Biswa N.] USAF, Res Lab, Wright Patterson AFB, OH 45433 USA.
   [Sands, Brian L.] UES Inc, Dayton, OH 45433 USA.
RP Urabe, K (reprint author), Japan Soc Promot Sci, Tokyo, Japan.
EM u-keiichi@plasma1.kuee.kyoto-u.ac.jp
RI Urabe, Keiichiro/G-4524-2011
OI Urabe, Keiichiro/0000-0001-9743-3184
FU Global Center of Excellence in Kyoto University; US Air Force Office of
   Scientific Research
FX Experiments in this study were performed at the Center for Advanced
   Power and Energy Conversion (CAPEC) at the Wright State University in
   Dayton, OH, USA. This study has been partially supported by a Global
   Center of Excellence program on 'Photonic and Electronic Science and
   Engineering' in Kyoto University and through the US Air Force Office of
   Scientific Research. The author UK is grateful to Professor George Huang
   at Wright State University and to all members of CAPEC for their
   substantial cooperation.
NR 31
TC 10
Z9 10
U1 3
U2 28
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0963-0252
J9 PLASMA SOURCES SCI T
JI Plasma Sources Sci. Technol.
PD JUN
PY 2012
VL 21
IS 3
AR 034004
DI 10.1088/0963-0252/21/3/034004
PG 10
WC Physics, Fluids & Plasmas
SC Physics
GA 952GZ
UT WOS:000304781800007
ER

PT J
AU Mishin, E
   Sutton, E
   Milikh, G
   Galkin, I
   Roth, C
   Forster, M
AF Mishin, E.
   Sutton, E.
   Milikh, G.
   Galkin, I.
   Roth, C.
   Foerster, M.
TI F2-region atmospheric gravity waves due to high-power HF heating and
   subauroral polarization streams
SO GEOPHYSICAL RESEARCH LETTERS
LA English
DT Article
ID ART.; DISTURBANCES
AB We report the first evidence of atmospheric gravity waves (AGWs) generated in the F2 region by high-power HF heating and subauroral polarization streams. Data come from the CHAMP and GRACE spacecraft overflying the High-frequency Active Auroral Research Program (HAARP) heating facility. These observations facilitate a new method of studying the ionosphere-thermosphere coupling in a controlled fashion by using various HF-heating regimes. They also reveal the subauroral F2 region to be a significant source of substorm AGWs, in addition to the well-known auroral E region. Citation: Mishin, E., E. Sutton, G. Milikh, I. Galkin, C. Roth, and M. Forster (2012), F2-region atmospheric gravity waves due to high-power HF heating and subauroral polarization streams, Geophys. Res. Lett., 39, L11101, doi: 10.1029/2012GL052004.
C1 [Mishin, E.; Sutton, E.] USAF, Space Vehicles Directorate, Res Lab, Kirtland AFB, NM 87117 USA.
   [Milikh, G.] Univ Maryland, Dept Astron, College Pk, MD 20742 USA.
   [Galkin, I.] Univ Massachusetts, Ctr Atmospher Res, Lowell, MA USA.
   [Foerster, M.] GFZ German Res Ctr Geosci, Potsdam, Germany.
RP Mishin, E (reprint author), USAF, Space Vehicles Directorate, Res Lab, 3550 Aberdeen Ave SE, Kirtland AFB, NM 87117 USA.
EM evgeny.mishin@us.af.mil
RI Sutton, Eric/A-1574-2016
OI Sutton, Eric/0000-0003-1424-7189
FU Air Force Office of Scientific Research; DARPA [N684228]; BAE Systems;
   Deutsche Forschungsanstalt fur Luft und Raumfahrt (DLR)
FX HAARP is operated jointly by the U.S. Air Force and U.S. Navy. Work at
   AFRL was supported by the Air Force Office of Scientific Research. GM
   was supported by DARPA via a subcontract N684228 with BAE Systems. The
   CHAMP satellite was sponsored by the Deutsche Forschungsanstalt fur Luft
   und Raumfahrt (DLR) and operated by the DLR Space Operations Center.
   GRACE is a joint partnership between NASA and DLR.
NR 19
TC 7
Z9 7
U1 0
U2 2
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 0094-8276
EI 1944-8007
J9 GEOPHYS RES LETT
JI Geophys. Res. Lett.
PD JUN 1
PY 2012
VL 39
AR L11101
DI 10.1029/2012GL052004
PG 4
WC Geosciences, Multidisciplinary
SC Geology
GA 952EI
UT WOS:000304772800006
ER

PT J
AU Perlovsky, L
AF Perlovsky, Leonid
TI Emotions of "higher" cognition
SO BEHAVIORAL AND BRAIN SCIENCES
LA English
DT Editorial Material
ID MUSIC; RECOGNITION; MOTIVATION; RESPONSES; PROSODY; SCIENCE; NEED
AB The target article by Lindquist et al. considers discrete emotions. This commentary argues that these are but a minor part of human emotional abilities, unifying us with animals. Uniquely human emotions are aesthetic emotions related to the need for the knowledge of "high" cognition, including emotions of the beautiful, cognitive dissonances, and musical emotions. This commentary touches on their cognitive functions and origins.
C1 [Perlovsky, Leonid] Harvard Univ, Athinoula A Martinos Ctr Biomed Imaging, Charlestown, MA 02129 USA.
   [Perlovsky, Leonid] USAF, Res Lab WPAFB, Wright Patterson AFB, OH 45433 USA.
RP Perlovsky, L (reprint author), Harvard Univ, Athinoula A Martinos Ctr Biomed Imaging, Charlestown, MA 02129 USA.
EM leonid@seas.harvard.edu
NR 52
TC 5
Z9 5
U1 2
U2 5
PU CAMBRIDGE UNIV PRESS
PI NEW YORK
PA 32 AVENUE OF THE AMERICAS, NEW YORK, NY 10013-2473 USA
SN 0140-525X
EI 1469-1825
J9 BEHAV BRAIN SCI
JI Behav. Brain Sci.
PD JUN
PY 2012
VL 35
IS 3
BP 157
EP 158
DI 10.1017/S0140525X11001555
PG 2
WC Psychology, Biological; Behavioral Sciences; Neurosciences
SC Psychology; Behavioral Sciences; Neurosciences & Neurology
GA 946ME
UT WOS:000304355000015
PM 22617665
ER

PT J
AU Bucklew, V
   Wysocki, B
   Pollock, C
AF Bucklew, Victor
   Wysocki, Bryant
   Pollock, Clifford
TI Femtosecond carrier dynamics in photoexcited highly ordered pyrolytic
   graphite films
SO OPTICAL MATERIALS
LA English
DT Article
DE Pump-probe; Equal-pulse correlation; Carrier dynamics; Phonon; Graphene;
   HOPG
ID LAYER GRAPHENE; RELAXATION; COHERENT
AB The ultrafast relaxation of photoexcited carriers in thin films of exfoliated highly ordered pyrolytic graphite are examined using the equal-pulse correlation technique. An extremely fast relaxation due to intraband carrier-carrier thermalization was observed at 15 +/- 10 fs followed by intraband carrier-optical phonon interaction on the order of 175 +/- 30 fs. A modulation in the absorption depth of 1.4% was observed in the samples from partial saturation due to Pauli blocking. Published by Elsevier B.V.
C1 [Bucklew, Victor; Wysocki, Bryant; Pollock, Clifford] Cornell Univ, Sch Elect & Comp Engn, Ithaca, NY 14853 USA.
   [Wysocki, Bryant] USAF, Res Lab, Informat Directorate, Rome, NY 13441 USA.
RP Wysocki, B (reprint author), Cornell Univ, Sch Elect & Comp Engn, Ithaca, NY 14853 USA.
EM btwq@cornell.edu
NR 25
TC 1
Z9 1
U1 2
U2 15
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0925-3467
J9 OPT MATER
JI Opt. Mater.
PD JUN
PY 2012
VL 34
IS 8
BP 1299
EP 1302
DI 10.1016/j.optmat.2012.02.004
PG 4
WC Materials Science, Multidisciplinary; Optics
SC Materials Science; Optics
GA 944ST
UT WOS:000304224800012
ER

PT J
AU Wang, NCY
   Zhao, QJ
   Wesselkamper, SC
   Lambert, JC
   Petersen, D
   Hess-Wilson, JK
AF Wang, Nina Ching Yi
   Zhao, Q. Jay
   Wesselkamper, Scott C.
   Lambert, Jason C.
   Petersen, Dan
   Hess-Wilson, Janet K.
TI Application of computational toxicological approaches in human health
   risk assessment. I. A tiered surrogate approach
SO REGULATORY TOXICOLOGY AND PHARMACOLOGY
LA English
DT Article
DE Structure-activity relationships; Human health risk assessment;
   Surrogate; n-Butylbenzene; Computational toxicology and predictive
   toxicology
ID GLYCOL MONOMETHYL ETHER; METABOLISM; ALKYLBENZENES; DISPOSITION;
   ACETATE; ANALOGS
AB Hazard identification and dose-response assessment for chemicals of concern found in various environmental media are typically based on epidemiological and/or animal toxicity data. However, human health risk assessments are often requested for many compounds found at contaminated sites throughout the US that have limited or no available toxicity information from either humans or animals. To address this issue, recent efforts have focused on expanding the use of structure-activity relationships (SAR) approaches to identify appropriate surrogates and/or predict toxicological phenotype(s) and associated adverse effect levels. A tiered surrogate approach (i.e., decision tree) based on three main types of surrogates (structural, metabolic, and toxicity-like) has been developed. To select the final surrogate chemical and its surrogate toxicity value(s), a weight-of-evidence approach based on the proposed decision tree is applied. In addition, a case study with actual toxicity data serves as the evaluation to support our tiered surrogate approach. Future work will include case studies demonstrating the utility of the surrogate approach under different scenarios for data-poor chemicals. In conclusion, our surrogate approach provides a reasonable starting point for identifying potential toxic effects, target organs, and/or modes-of-action, and for selecting surrogate chemicals from which to derive either reference or risk values. Published by Elsevier Inc.
C1 [Hess-Wilson, Janet K.] USAF, Ctr Engn & Environm, Tech Div, Restorat Branch, San Antonio, TX 78226 USA.
   [Wang, Nina Ching Yi; Zhao, Q. Jay; Wesselkamper, Scott C.; Lambert, Jason C.; Petersen, Dan] US EPA, Natl Ctr Environm Assessment, Cincinnati, OH 45268 USA.
RP Wang, NCY (reprint author), US EPA, MS A110, NCEA, 26W Martin Luther King Dr, Cincinnati, OH 45268 USA.
EM wang.nina@epa.gov
NR 38
TC 7
Z9 7
U1 0
U2 7
PU ACADEMIC PRESS INC ELSEVIER SCIENCE
PI SAN DIEGO
PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA
SN 0273-2300
J9 REGUL TOXICOL PHARM
JI Regul. Toxicol. Pharmacol.
PD JUN
PY 2012
VL 63
IS 1
BP 10
EP 19
DI 10.1016/j.yrtph.2012.02.006
PG 10
WC Medicine, Legal; Pharmacology & Pharmacy; Toxicology
SC Legal Medicine; Pharmacology & Pharmacy; Toxicology
GA 944VB
UT WOS:000304230800002
PM 22369873
ER

PT J
AU Nwokeji, E
   Yarger, S
   Trice, S
   Chao, S
   Gutke, G
   Bonnema, A
   Selvester, R
   Davies, W
   Devine, J
AF Nwokeji, E.
   Yarger, S.
   Trice, S.
   Chao, S.
   Gutke, G.
   Bonnema, A.
   Selvester, R.
   Davies, W.
   Devine, J.
TI EXAMINING MEDICATION ADHERENCE AND LOW DENSITY LIPOPROTEIN-CHOLESTEROL
   (LDL-C) GOALS AMONG TRICARE BENEFICIARIES RECEIVING STATIN THERAPY FOR
   SECONDARY PREVENTION OF CORONARY HEART DISEASE IN US MILITARY TREATMENT
   FACILITIES
SO VALUE IN HEALTH
LA English
DT Meeting Abstract
C1 [Nwokeji, E.; Yarger, S.] Dept Def GDIT, Ft Sam Houston, TX USA.
   [Trice, S.; Selvester, R.; Devine, J.] US Dept Def, Ft Sam Houston, TX USA.
   [Chao, S.; Bonnema, A.] USAF, Med Support Agcy, San Antonio, TX USA.
   [Gutke, G.] Healthcare Informat Div, San Antonio, TX USA.
   [Davies, W.] US Dept Def, Falls Church, VA USA.
NR 0
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 1098-3015
J9 VALUE HEALTH
JI Value Health
PD JUN
PY 2012
VL 15
IS 4
BP A124
EP A124
PG 1
WC Economics; Health Care Sciences & Services; Health Policy & Services
SC Business & Economics; Health Care Sciences & Services
GA 947XP
UT WOS:000304468200644
ER

PT J
AU Eilam, D
   Zadicario, P
   Genossar, T
   Mort, J
AF Eilam, David
   Zadicario, Pazit
   Genossar, Tom
   Mort, Joel
TI The anxious vole: the impact of group and gender on collective behavior
   under life-threat
SO BEHAVIORAL ECOLOGY AND SOCIOBIOLOGY
LA English
DT Article
DE Predation risk; Defensive behavior; Collective behavior; Contagious
   fear; Transmission; Predator-prey interactions
ID OPEN-FIELD; ANTIPREDATOR VIGILANCE; STURNUS-VULGARIS; DECISION-MAKING;
   SIZE; PREDATION; FLOCKS; ANIMALS; MAMMALS; SYNCHRONIZATION
AB Social animals behave collectively in order to maintain a cohesive group. This collective behavior is often led by a few individuals of specific gender, social rank, or spatial physical location in the group (i.e., perimeter or front). We examined how individual social voles () in same-gender compared with mixed-gender groups respond to an owl attack. We found that anxiety level, as measured by the time that each individual spent in less-sheltered sectors (open arms of elevated plus-maze and center of open arena), was affected by both the social context and the gender of the tested individuals. While both female and male voles generally reduced their activity in the open following owl attack, males in mixed-gender groups were exceptional in dichotomizing into those that spent a short period and those that spent a long period in the open arms of the plus-maze. Based on the similar responses of the same-gender groups, we suggest that anxiety is contagious, and based on the lower anxiety level of the mixed-gender groups, we suggest that natural groups that comprise both males and females are better able to cope with life-threat compared with same-gender groups. Finally, we suggest that the differential responses of males in the mixed-gender groups were due to a few males that displayed a low level of anxiety. These males were probably individuals of high social rank, and their response reflects their natural protective role, as previously described in social voles.
C1 [Eilam, David; Zadicario, Pazit; Genossar, Tom] Tel Aviv Univ, Dept Zool, IL-69978 Ramat Aviv, Israel.
   [Mort, Joel] USAF, Trust & Human Interact Branch, Res Lab, Dayton, OH USA.
RP Eilam, D (reprint author), Tel Aviv Univ, Dept Zool, IL-69978 Ramat Aviv, Israel.
EM eilam@post.tau.ac.il
FU Air Force Office of Scientific Research, Air Force Material Command,
   USAF [FA8655-11-1-3050]
FX We are grateful to Mr. Daniel Galfanski and Ms. Rony Izhar for their
   help in experimentation and data acquisition, and to Ms. Naomi Paz for
   language editing. The study was sponsored by the Air Force Office of
   Scientific Research, Air Force Material Command, USAF, under grant
   number FA8655-11-1-3050. The US Government is authorized to reproduce
   and distribute reprints for governmental purpose notwithstanding any
   copyright notation thereon.
NR 62
TC 3
Z9 3
U1 1
U2 21
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 0340-5443
J9 BEHAV ECOL SOCIOBIOL
JI Behav. Ecol. Sociobiol.
PD JUN
PY 2012
VL 66
IS 6
BP 959
EP 968
DI 10.1007/s00265-012-1344-1
PG 10
WC Behavioral Sciences; Ecology; Zoology
SC Behavioral Sciences; Environmental Sciences & Ecology; Zoology
GA 943XD
UT WOS:000304159600014
ER

PT J
AU Heidler, JT
AF Heidler, Jeanne T.
TI Democracy's Lawyer: Felix Grundy of the Old Southwest
SO JOURNAL OF THE EARLY REPUBLIC
LA English
DT Book Review
C1 [Heidler, Jeanne T.] US Air Force Acad, Colorado Springs, CO 80840 USA.
RP Heidler, JT (reprint author), US Air Force Acad, Colorado Springs, CO 80840 USA.
NR 1
TC 0
Z9 0
U1 0
U2 0
PU UNIV PENNSYLVANIA PRESS
PI PHILADELPHIA
PA JOURNALS DIVISION, 3905 SPRUCE STREET, PHILADELPHIA, PA 19104 USA
SN 0275-1275
EI 1553-0620
J9 J EARLY REPUBL
JI J. Early Repub.
PD SUM
PY 2012
VL 32
IS 2
BP 299
EP 301
PG 3
WC History
SC History
GA V35KF
UT WOS:000209147800013
ER

PT J
AU Wettemann, RP
AF Wettemann, Robert P., Jr.
TI KONTUM: THE BATTLE TO SAVE SOUTH VIETNAM
SO ORAL HISTORY REVIEW
LA English
DT Book Review
C1 [Wettemann, Robert P., Jr.] US Air Force Acad, Ctr Oral Hist, Colorado Springs, CO 80840 USA.
RP Wettemann, RP (reprint author), US Air Force Acad, Ctr Oral Hist, Colorado Springs, CO 80840 USA.
NR 1
TC 0
Z9 0
U1 0
U2 0
PU OXFORD UNIV PRESS
PI OXFORD
PA GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND
SN 0094-0798
EI 1533-8592
J9 ORAL HIST REV
JI Oral Hist. Rev.
PD SUM-FAL
PY 2012
VL 39
IS 2
BP 387
EP 389
DI 10.1093/ohr/ohs060
PG 4
WC History
SC History
GA V32XL
UT WOS:000208983800045
ER

PT J
AU Woo, MH
   Grippin, A
   Wu, CY
   Wander, J
AF Woo, Myung-Heui
   Grippin, Adam
   Wu, Chang-Yu
   Wander, Joseph
TI Microwave-irradiation-assisted HVAC Filtration for Inactivation of Viral
   Aerosols
SO AEROSOL AND AIR QUALITY RESEARCH
LA English
DT Article
DE HVAC filter; Mask; Microwave; MS2; Inactivation efficiency; Survival
   fraction
ID STAPHYLOCOCCUS-AUREUS; BACILLUS-SUBTILIS; RADIATION; DISINFECTION;
   BIOAEROSOLS; MEMBRANE; DAMAGE; VIRUS
AB Inactivation of collected viral aerosols is important for preventing a filter medium's serving as a fomite. The focus of this study was to evaluate the inactivation efficiency (IE) achieved through filtration coupled with microwave irradiation. MS2 aerosolized through a Collison nebulizer was fed into the system and collected onto the filter. For in-flight microwave decontamination, microwave irradiation was applied to an HVAC (heating, ventilation and air conditioning) filter supported on a SiC disk for three cycles of selected irradiation times per 10 min (i.e., 1, 2.5, 5, and 10 min/10 min) at power levels ranging from 125 W to 375 W. The survival fraction (SF) on the substrate and the IE through the entire system were investigated to determine the efficacy of this approach. SF decreased and IE increased as microwave power level was increased (p = 0.02 and p < 0.01, respectively) or the application time was extended (p = 0.03 and p < 0.01, respectively). Both measures changed sharply above a threshold temperature of around 90 degrees C and reached 2 logs at 116 and 109 degrees C, respectively. The log SF and IE of -2.59 and 3.62, respectively, were observed when the operating condition of 375 W for 10 min/cycle was used and the SiC disk facilitated microwave absorption. When a quartz frit was used as a support instead of the SiC disk, log inactivation efficiencies of 0.8, 1.0, and 1.3 were measured at relative humidities of 30%, 60% and 90%, respectively, under the same irradiation conditions. Relative humidity is a significant parameter from 50-80 degrees C (p = 0.01). The results demonstrate that microwave-assisted filtration systems can be used as an effective means for inactivating viruses.
C1 [Woo, Myung-Heui; Wu, Chang-Yu] Univ Florida, Dept Environm Engn Sci, Gainesville, FL 32611 USA.
   [Grippin, Adam] Univ Florida, Dept Chem Engn, Gainesville, FL 32611 USA.
   [Wander, Joseph] USAF, Res Lab, Tyndall AFB, FL 32403 USA.
RP Wu, CY (reprint author), Univ Florida, Dept Environm Engn Sci, Gainesville, FL 32611 USA.
EM cywu@ufl.edu
FU Air Force Research Laboratory [FA 8650-06-C5913]; HHMI at the University
   of Florida
FX This research is supported by the Air Force Research Laboratory through
   grant FA 8650-06-C5913. The authors are grateful to the Major Analytical
   Instrumentation Center at the University of Florida for providing the
   SEM. Myung-Heui Woo and Adam Grippin acknowledge the Alumni Scholarship
   and the Undergraduate Research Scholarship supported by the HHMI Science
   for Life Program at the University of Florida, respectively.
NR 33
TC 4
Z9 4
U1 2
U2 9
PU TAIWAN ASSOC AEROSOL RES-TAAR
PI TAICHUNG COUNTY
PA CHAOYANG UNIV TECH, DEPT ENV ENG & MGMT, PROD CTR AAQR, NO 168, JIFONG E
   RD, WUFONG TOWNSHIP, TAICHUNG COUNTY, 41349, TAIWAN
SN 1680-8584
EI 2071-1409
J9 AEROSOL AIR QUAL RES
JI Aerosol Air Qual. Res.
PD JUN
PY 2012
VL 12
IS 3
BP 295
EP 303
DI 10.4209/aaqr.2011.11.0193
PG 9
WC Environmental Sciences
SC Environmental Sciences & Ecology
GA 936QI
UT WOS:000303604700001
ER

PT J
AU Ferguson, GA
   Mehmood, F
   Rankin, RB
   Greeley, JP
   Vajda, S
   Curtiss, LA
AF Ferguson, Glen Allen
   Mehmood, Faisal
   Rankin, Rees B.
   Greeley, Jeffery P.
   Vajda, Stefan
   Curtiss, Larry A.
TI Exploring Computational Design of Size-Specific Subnanometer Clusters
   Catalysts
SO TOPICS IN CATALYSIS
LA English
DT Article
DE Catalysis; Supported metal clusters; Subnanometer clusters; Propylene
   oxidation; Propane dehydrogenation; Methanol decomposition; Density
   functional theory
ID DENSITY-FUNCTIONAL THEORY; SUPPORTED METAL-CLUSTERS; WOODWARD-HOFFMANN
   RULES; SELECTIVE PROPENE EPOXIDATION; HIGH-THROUGHPUT DISCOVERY;
   SINGLE-CRYSTAL SURFACES; MASS-SELECTED CLUSTERS; METHANOL DECOMPOSITION;
   ORGANIC-SYNTHESIS; STRUCTURE-SENSITIVITY
AB Computational design of catalysts is currently an area of significant interest. While this area has made great strides in recent years, these methods have mainly been applied to solid heterogeneous catalysts. An emerging class of catalysts with very promising properties is that constructed from clusters of atoms at or below the nanoscale. The use of computational catalyst design methods for the construction and optimization of subnanometer clusters, however, has not yet been extensively explored. In this review, we discuss recent work on subnanometer catalysts in our group and discuss how computational catalyst design principles are being explored for this class of materials. Specifically, the origin of activity and selectivity for supported metal clusters that catalyze the production of propene and propylene oxide are discussed along with the implications of these studies for implementing a descriptor-based catalyst optimization. The extension of these ideas for designing a catalyst for methanol decomposition is then discussed and an application of a descriptor-based scheme for the optimization of methanol decomposition by subnanometer catalyst is shown.
C1 [Rankin, Rees B.; Greeley, Jeffery P.; Vajda, Stefan; Curtiss, Larry A.] Argonne Natl Lab, Ctr Nanoscale Mat, Argonne, IL 60439 USA.
   [Ferguson, Glen Allen; Mehmood, Faisal; Vajda, Stefan; Curtiss, Larry A.] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA.
   [Mehmood, Faisal] USAF, Res Lab, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA.
   [Vajda, Stefan] Yale Univ, Dept Chem & Environm Engn, New Haven, CT 06520 USA.
RP Greeley, JP (reprint author), Argonne Natl Lab, Ctr Nanoscale Mat, 9700 S Cass Ave, Argonne, IL 60439 USA.
EM jgreeley@anl.gov; curtiss@anl.gov
FU U. S. Department of Energy, Office of Science, Office of Basic Energy
   Sciences, Materials Sciences [DE-AC02-06CH11357]; Air Force Office of
   Scientific Research
FX Work, including an Early Career Award for J.G., was supported by the U.
   S. Department of Energy, Office of Science, Office of Basic Energy
   Sciences, Materials Sciences under Contract No. DE-AC02-06CH11357. The
   authors acknowledge the use of Argonne LCRC and the Center for Nanoscale
   Materials computer resources. S.V. acknowledges initial support by the
   Air Force Office of Scientific Research and the use of the 12-ID-C
   beamline of the Advanced Photon Source for performing the experimental
   studies.
NR 242
TC 11
Z9 11
U1 7
U2 81
PU SPRINGER/PLENUM PUBLISHERS
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 1022-5528
EI 1572-9028
J9 TOP CATAL
JI Top. Catal.
PD JUN
PY 2012
VL 55
IS 5-6
BP 353
EP 365
DI 10.1007/s11244-012-9804-4
PG 13
WC Chemistry, Applied; Chemistry, Physical
SC Chemistry
GA 940IR
UT WOS:000303883700013
ER

PT J
AU Choi, YS
   Parthasarathy, TA
   Woodward, C
   Dimiduk, DM
   Uchic, MD
AF Choi, Yoon Suk
   Parthasarathy, Triplicane A.
   Woodward, Christopher
   Dimiduk, Dennis M.
   Uchic, Michael D.
TI Constitutive Model for Anisotropic Creep Behaviors of Single-Crystal
   Ni-Base Superalloys in the Low-Temperature, High-Stress Regime
SO METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND
   MATERIALS SCIENCE
LA English
DT Article
ID TURBINE-BLADES; CMSX-4; DEFORMATION; DISLOCATIONS; MECHANISMS; KINETICS
AB A crystallographic constitutive model is developed to capture orientation-sensitive primary and secondary creep behaviors within approximately 20 deg from the [0 0 1] orientation in single-crystal superalloys for the low-temperature and high-stress regime. The crystal plasticity-based constitutive formulations phenomenologically incorporate experimentally observed dislocation micromechanisms. Specifically, the model numerically delineates the nucleation, propagation, and hardening of a < 112 > dislocations that shear multiple gamma' precipitates by creating extended stacking faults. Detailed numerical descriptions involve slip-system kinematics from a/2 < 112 > dislocations shearing the c-phase matrix, a < 112 > stacking fault dislocation ribbons shearing the gamma'-phase precipitate, interactions between a/2 < 112 > dislocations to nucleate a < 112 > dislocations, and interactions between the two types of dislocations. The new constitutive model was implemented in the finite-element method (FEM) framework and used to predict primary and secondary creep of a single-crystal superalloy CMSX-4 in three selected orientations near the [0 0 1] at 1023 K (750 degrees C) and 750 MPa. Simulation results showed a reasonable, qualitative agreement with the experimental data. The simulation results also indicated that a/2 < 112 > matrix dislocations are important to limit the propagation of a < 112 > dislocations, which leads to the transition to secondary creep.
C1 [Choi, Yoon Suk; Parthasarathy, Triplicane A.] Universal Energy Syst Inc, Mat & Proc Div, Dayton, OH 45432 USA.
   [Woodward, Christopher; Dimiduk, Dennis M.; Uchic, Michael D.] USAF, Met Ceram & Nondestruct Evaluat Div, Res Lab, AFRL RXLM, Wright Patterson AFB, OH 45433 USA.
RP Choi, YS (reprint author), Universal Energy Syst Inc, Mat & Proc Div, Dayton, OH 45432 USA.
EM yoon-suk.choi@wpafb.af.mil
RI Parthasarathy, Triplicane/B-7146-2011
OI Parthasarathy, Triplicane/0000-0002-5449-9754
FU AVETEC, Springfield, OH through the AFOSR NALI; AFRL/RXLM
   [FA8650-10-D-5226]; Ohio Supercomputer Center [PAS0647]; AFRL/RXL
FX This work was supported initially by AVETEC, Springfield, OH through the
   AFOSR NALI program (Program Manager: Dr. J. Tiley of AFRL/RXLM). The
   authors are grateful to Drs. R. Dutton, S. Russ, and A. Rosenberger of
   AFRL/RXL for various supports throughout the project. Support from the
   AFRL/RXLM under contract # FA8650-10-D-5226 is acknowledged by Y.S.C.
   and T. A. P. Computations were performed using computer resources at the
   Ohio Supercomputer Center (grant no. PAS0647, Professor G. Daehn of The
   Ohio State University). This research was also supported in part by a
   grant of computer resources at the AFRL-DSRC.
NR 34
TC 0
Z9 0
U1 0
U2 13
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 1073-5623
J9 METALL MATER TRANS A
JI Metall. Mater. Trans. A-Phys. Metall. Mater. Sci.
PD JUN
PY 2012
VL 43A
IS 6
BP 1861
EP 1869
DI 10.1007/s11661-011-1047-7
PG 9
WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical
   Engineering
SC Materials Science; Metallurgy & Metallurgical Engineering
GA 934PQ
UT WOS:000303457000014
ER

PT J
AU Chen, MY
   Chen, CG
AF Chen, Ming Y.
   Chen, Chenggang
TI Zirconium tungstate/bismaleimide composite
SO POLYMERS FOR ADVANCED TECHNOLOGIES
LA English
DT Article
DE particle-reinforced composites; coefficient of the thermal expansion
   (CTE); morphology; thermal properties; scanning electron microscopy
   (SEM)
ID NEGATIVE THERMAL-EXPANSION; ZRW2O8; TUNGSTATE; COEFFICIENT; RESIN
AB The residual stress that arises from processing and the mismatch of coefficient of the thermal expansion (CTE) between polymer and carbon fiber (or metal) could cause a crack initiation and de-lamination in the aircraft structural applications. In this study, bismaleimide composites with zirconium tungstate (-8.8?ppm/K) were successfully fabricated. A synergetic effect led to a significant improvement of the thermal stability of the composites due to the formation of the integrated structure in the zirconium tungstate (ZrW2O8)/Matrimid 5292 (Huntsman, the Woodlands, TX) composite at high temperature, which prevented and/or slowed the escape of the thermal decomposition by-products. The addition of zirconium tungstate into the Matrimid 5292 could also increase the storage modulus while keeping the glass transition temperature unchanged. The CTE of a 20?vol.% ZrW2O8/Matrimid 5292composite material can be reduced by 40% compared with that of the pure Matrimid 5292. The extent of reduction in the CTE is much greater than predicted from the rule of mixture. Micromechanical modeling shows that the Christensen model and the Schapery upper limit model gave a good prediction of CTEs for ZrW2O8/Matrimid 5292 composite. Published 2011. This article is a US Government work and is in the public domain in the USA.
C1 [Chen, Ming Y.; Chen, Chenggang] USAF, Res Lab, AFRL RXBC, Wright Patterson AFB, OH 45433 USA.
   [Chen, Chenggang] Univ Dayton, Res Inst, Dayton, OH 45469 USA.
RP Chen, CG (reprint author), USAF, Res Lab, AFRL RXBC, 2941 Hobson Way, Wright Patterson AFB, OH 45433 USA.
EM Chenggang.Chen@wpafb.af.mil
FU Air Force Research Laboratory, Materials & Manufacturing Directorate
   [FA8650-05-D-5052]; Air Force Office of Scientific Research
FX This work is jointly supported by the Air Force Research Laboratory,
   Materials & Manufacturing Directorate (contract no. FA8650-05-D-5052)
   and the Air Force Office of Scientific Research. Technical help from Mr.
   Kevin H. Hoos and Drs. H. Lee and L. E. Matson was greatly appreciated.
NR 15
TC 1
Z9 1
U1 3
U2 18
PU WILEY-BLACKWELL
PI MALDEN
PA COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA
SN 1042-7147
J9 POLYM ADVAN TECHNOL
JI Polym. Adv. Technol.
PD JUN
PY 2012
VL 23
IS 6
BP 958
EP 966
DI 10.1002/pat.1998
PG 9
WC Polymer Science
SC Polymer Science
GA 935CY
UT WOS:000303497700005
ER

PT J
AU Kozlowski, EJ
   Barcia, AM
   Tokish, JM
AF Kozlowski, Erick J.
   Barcia, Anthony M.
   Tokish, John M.
TI Meniscus Repair: The Role of Accelerated Rehabilitation in Return to
   Sport
SO SPORTS MEDICINE AND ARTHROSCOPY REVIEW
LA English
DT Review
DE meniscus; meniscal repair; rehabilitation
ID IMMOBILIZATION; TEARS; KNEE
AB With increasing understanding of the detrimental effects of the meniscectomized knee on outcomes and long-term durability, there is an ever increasing emphasis on meniscal preservation through repair. Repair in the young athlete is particularly challenging given the goals of returning to high-level sports. A healed meniscus is only the beginning of successful return to activity, and the understanding of "protection with progression" must be emphasized to ensure optimal return to performance. The principles of progression from low to high loads, single to multiplane activity, slow to high speeds, and stable to unstable platforms are cornerstones to this process. Emphasis on the kinetic chain environment that the knee will function within cannot be overemphasized. Communication between the operating surgeon and rehabilitation specialist is critical to optimizing effective return to sports.
C1 [Barcia, Anthony M.; Tokish, John M.] Tripler Army Med Ctr, Dept Orthoped Surg, Honolulu, HI 96859 USA.
   [Kozlowski, Erick J.] USAF Acad, Colorado Springs, CO 80840 USA.
RP Tokish, JM (reprint author), Tripler Army Med Ctr, Dept Orthoped Surg, 1 Jarrett White Rd, Honolulu, HI 96859 USA.
NR 23
TC 5
Z9 6
U1 2
U2 21
PU LIPPINCOTT WILLIAMS & WILKINS
PI PHILADELPHIA
PA 530 WALNUT ST, PHILADELPHIA, PA 19106-3621 USA
SN 1062-8592
J9 SPORTS MED ARTHROSC
JI Sports Med. Arthrosc. Rev.
PD JUN
PY 2012
VL 20
IS 2
BP 121
EP 126
DI 10.1097/JSA.0b013e318253d7c6
PG 6
WC Sport Sciences
SC Sport Sciences
GA 937JG
UT WOS:000303654200011
PM 22555210
ER

PT J
AU Chan, KS
   Enright, MP
   Golden, PJ
   Naboulsi, S
   Chandra, R
   Pentz, AC
AF Chan, Kwai S.
   Enright, Michael P.
   Golden, Patrick J.
   Naboulsi, Samir
   Chandra, Ramesh
   Pentz, Alan C.
TI Probabilistic High-Cycle Fretting Fatigue Assessment of Gas Turbine
   Engine Components
SO JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER-TRANSACTIONS OF THE
   ASME
LA English
DT Article
ID METHODOLOGY
AB High-cycle fatigue (HCF) is arguably one of the costliest sources of in-service damage in military aircraft engines. HCF of turbine blades and disks can pose a significant engine risk because fatigue failure can result from resonant vibratory stresses sustained over a relatively short time. A common approach to mitigate HCF risk is to avoid dangerous resonant vibration modes (first bending and torsion modes, etc.) and instabilities (flutter and rotating stall) in the operating range. However, it might be impossible to avoid all the resonance for all flight conditions. In this paper, a methodology is presented to assess the influences of HCF loading on the fracture risk of gas turbine engine components subjected to fretting fatigue. The methodology is based on an integration of a global finite element analysis of the disk-blade assembly, numerical solution of the singular integral equations using the CAPRI (Contact Analysis for Profiles of Random Indenters) and Worst Case Fret methods, and risk assessment using the DARWIN (Design Assessment of Reliability with Inspection) probabilistic fracture mechanics code. The methodology is illustrated for an actual military engine disk under real life loading conditions. [DOI: 10.1115/1.4005975]
C1 [Chan, Kwai S.; Enright, Michael P.] SW Res Inst, San Antonio, TX 78238 USA.
   [Golden, Patrick J.] USAF, Res Lab, Wright Patterson AFB, OH 45433 USA.
   [Naboulsi, Samir] High Performance Technol Inc, Wright Patterson AFB, OH 45433 USA.
   [Chandra, Ramesh; Pentz, Alan C.] NAVAIR, Patuxent River, MD 20670 USA.
RP Chan, KS (reprint author), SW Res Inst, San Antonio, TX 78238 USA.
FU NAVAIR [EDO-08-SA-0021]; DoD
FX This work was supported by NAVAIR under Agreement EDO-08-SA-0021. The
   computational FEM analyses are performed using the DoD High Performance
   Computing Modernization Program (HPCMP) support. The assistance by Dr.
   Wuwei Liang, Mr. Jonathan Moody, and Ms. Loretta Mesa, all of SwRI, are
   acknowledged.
NR 30
TC 2
Z9 2
U1 1
U2 37
PU ASME-AMER SOC MECHANICAL ENG
PI NEW YORK
PA THREE PARK AVE, NEW YORK, NY 10016-5990 USA
SN 0742-4795
J9 J ENG GAS TURB POWER
JI J. Eng. Gas. Turbines Power-Trans. ASME
PD JUN
PY 2012
VL 134
IS 6
AR 062502
DI 10.1115/1.4005975
PG 8
WC Engineering, Mechanical
SC Engineering
GA 931ZF
UT WOS:000303257300008
ER

PT J
AU Amama, PB
   Pint, CL
   Mirri, F
   Pasquali, M
   Hauge, RH
   Maruyama, B
AF Amama, Placidus B.
   Pint, Cary L.
   Mirri, Francesca
   Pasquali, Matteo
   Hauge, Robert H.
   Maruyama, Benji
TI Catalyst-support interactions and their influence in water-assisted
   carbon nanotube carpet growth
SO CARBON
LA English
DT Article
ID CHEMICAL-VAPOR-DEPOSITION; IRON-OXIDE; MO CATALYST; MORPHOLOGY;
   REDUCTION; EVOLUTION; FORESTS; NANOPARTICLES; TEMPERATURE; TERMINATION
AB We report results from characterization studies focused on a diverse selection of catalyst support materials in order to understand what makes a good catalyst support during carbon nanotube (CNT) carpet growth via water-assisted chemical vapor deposition. The growth and catalyst morphological changes occurring for thin Fe layers deposited on Al2O3, MgO, TIN, and ZrO2 are compared. The growth behaviors of the catalyst substrates were evidently different, with Al2O3/Fe supporting CNT carpet growth and showing the highest activity and longest lifetime. The TiN/Fe catalyst also supported CNT carpet growth, albeit with much lower activity, shorter lifetime, and lower CNT quality while MgO/Fe and ZrO2/Fe did not support CNT carpet growth under standard growth conditions. Studies using a combination of atomic force microscopy and X-ray photoelectron spectroscopy revealed a general correlation between the catalyst behavior (activity and lifetime) and the 3D evolution of the catalyst for active catalysts (Al2O3/Fe and TiN/Fe). Analysis of inactive catalysts under standard conditions (MgO/Fe and ZrO2/Fe) raise interesting questions related to additional chemical interactions between the substrate and catalyst that could influence nucleation and CNT growth. This work provides a step toward understanding the challenges that arise in engineering efficient CNT growth processes on a desired substrate. (C) 2012 Elsevier Ltd. All rights reserved.
C1 [Amama, Placidus B.; Maruyama, Benji] USAF, Res Lab, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA.
   [Amama, Placidus B.] Univ Dayton, UDRI, Dayton, OH 45469 USA.
   [Pint, Cary L.; Mirri, Francesca; Pasquali, Matteo; Hauge, Robert H.] Rice Univ, Dept Chem & Biomol Engn, Richard E Smalley Inst Nanoscale Sci & Technol, Houston, TX 77251 USA.
   [Pint, Cary L.; Mirri, Francesca; Pasquali, Matteo; Hauge, Robert H.] Rice Univ, Dept Chem, Richard E Smalley Inst Nanoscale Sci & Technol, Houston, TX 77251 USA.
RP Amama, PB (reprint author), USAF, Res Lab, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA.
EM Placidus.Amama@wpafb.af.mil
RI Pasquali, Matteo/A-2489-2008; Hauge, Robert/A-7008-2011; Pint,
   Cary/I-6785-2013
OI Pasquali, Matteo/0000-0001-5951-395X; Hauge, Robert/0000-0002-3656-0152;
   
FU Air Force Office of Scientific Research (AFOSR) [FA9550-09-1-0590]; Air
   Force Research Laboratories (AFRL) [FA8650-07-2-5061,
   07-S568-0042-01-C1]; Welch Foundation [C-1668]; AFRL/RXBN
FX This work was supported by Air Force Office of Scientific Research
   (AFOSR) grant FA9550-09-1-0590, Air Force Research Laboratories (AFRL)
   agreements FA8650-07-2-5061 and 07-S568-0042-01-C1, Welch Foundation
   grant C-1668, and AFRL/RXBN.
NR 46
TC 20
Z9 21
U1 0
U2 51
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0008-6223
J9 CARBON
JI Carbon
PD JUN
PY 2012
VL 50
IS 7
BP 2396
EP 2406
DI 10.1016/j.carbon.2012.01.045
PG 11
WC Chemistry, Physical; Materials Science, Multidisciplinary
SC Chemistry; Materials Science
GA 929CI
UT WOS:000303038400002
ER

PT J
AU Sabelkin, V
   Misak, HE
   Mall, S
   Asmatulu, R
   Kladitis, PE
AF Sabelkin, V.
   Misak, H. E.
   Mall, S.
   Asmatulu, R.
   Kladitis, P. E.
TI Tensile loading behavior of carbon nanotube wires
SO CARBON
LA English
DT Article
ID FIBERS; MODULUS; FATIGUE; YARNS
AB The mechanical behavior of four carbon nanotube (CNT) wires, comprised of 1-yarn, 30-yarn, 60-yarn, and 100-yam, was investigated under constant tension at two loading rates of 0.02 mm/s and 2 mm/s. Tests were conducted with both as-fabricated and prestressed wires. The ultimate tenacity or apparent ultimate tensile strength of all four wires was found to be independent of loading rate, with those for the single-yarn wire about twice those of the multiple-yarn wires. Strain at a given stress level and failure strain of the multiple-yam wires before pre-stressing were almost an order of magnitude larger than those for the single-yarn wire, and this difference was reduced considerably after pre-stressing. The failure mechanisms of 1-yarn wire or twisted individual yarns in multiple-strand wires involved ductile (necking) deformation and fibrillar breakage. Inner yarns in multiple-yarn wires initially failed at the same location, followed by outer yarns failing at different locations. Additionally, sliding occurred between individual yams, and twisting of the yams accompanied by surface wear took place in the multiple-yam wires, which contributed to their failure at a lower load compared to the single-yarn wire. Published by Elsevier Ltd.
C1 [Sabelkin, V.; Mall, S.; Kladitis, P. E.] USAF, Inst Technol, Dept Aerosp Engn, Wright Patterson AFB, OH 45433 USA.
   [Misak, H. E.; Asmatulu, R.] Wichita State Univ, Dept Mech Engn, Wichita, KS 67260 USA.
RP Mall, S (reprint author), USAF, Inst Technol, Dept Aerosp Engn, 2950 Hobson Way, Wright Patterson AFB, OH 45433 USA.
EM Shankar.Mall@afit.edu
NR 13
TC 17
Z9 17
U1 2
U2 32
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0008-6223
J9 CARBON
JI Carbon
PD JUN
PY 2012
VL 50
IS 7
BP 2530
EP 2538
DI 10.1016/j.carbon.2012.01.077
PG 9
WC Chemistry, Physical; Materials Science, Multidisciplinary
SC Chemistry; Materials Science
GA 929CI
UT WOS:000303038400016
ER

PT J
AU Hardman, N
   Colombi, J
AF Hardman, Nicholas
   Colombi, John
TI An empirical methodology for human integration in the SE technical
   processes
SO SYSTEMS ENGINEERING
LA English
DT Article
DE human systems integration; human performance modeling; requirements
   elicitation; function allocation; user interface design
ID COMMERCIAL AVIATION ACCIDENTS; HUMAN ERROR; CLASSIFICATION-SYSTEM; PILOT
   ERROR; INFORMATION; DESIGN; MODELS
AB This research examines quantitative methods to better integrate human considerations into early system design. Studies show that for human systems integration (HSI) concerns, systems engineers often rely on qualitative judgments or delay critical decisions until late in the system lifecycle; actions that have predictable cost, schedule, and performance consequences. Thus, empirical and quantifiable methods were pursued to improve the engineering of human HSI. These methods are mathematically rigorous, grounded in relevant theory, and apply human subjects data to critical systems development challenges. Their utility is demonstrated by application in support of three systems engineering activities: requirements elicitation, functional allocation, and user interface design. Together, they demonstrate a coherent approach to integrate human considerations into early system developmenta key tenet of the INCOSE SE Handbook. (c) 2012 Wiley Periodicals, Inc. Syst Eng
C1 [Colombi, John] USAF, Dept Syst & Engn Management, Inst Technol, Dayton, OH 45433 USA.
   [Hardman, Nicholas] Aeronaut Syst Ctr, Dayton, OH 45433 USA.
RP Colombi, J (reprint author), USAF, Dept Syst & Engn Management, Inst Technol, Dayton, OH 45433 USA.
EM nicholas.hardman@wpafb.af.mil; john.colombi@afit.edu
FU 711th Human Performance Wing, Wright-Patterson AFB, OH
FX This work was sponsored by 711th Human Performance Wing,
   Wright-Patterson AFB, OH. The authors thank the Systems Engineering
   reviewers for many significant improvements.
NR 95
TC 1
Z9 1
U1 0
U2 10
PU WILEY-BLACKWELL
PI MALDEN
PA COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA
SN 1098-1241
J9 SYSTEMS ENG
JI Syst. Eng.
PD SUM
PY 2012
VL 15
IS 2
BP 172
EP 190
DI 10.1002/sys.20201
PG 19
WC Engineering, Industrial; Operations Research & Management Science
SC Engineering; Operations Research & Management Science
GA 929IZ
UT WOS:000303055800004
ER

PT J
AU Badiru, AB
   Jones, RR
AF Badiru, Adedeji B.
   Jones, Rochelle R.
TI A systems framework for distance learning in engineering graduate
   programs
SO SYSTEMS ENGINEERING
LA English
DT Article
DE distance learning (DL); systems engineering framework; SIMILAR process;
   DL practices
ID EDUCATION
AB Distance learning (DL) is undergoing a rapid growth in academia, business, industry, and the military. Recent technological developments in computer-based training, along with shrinking internal resources, and rising industry interest in sustainable workforce development, provide a strong impetus for DL investments. Due to the multiplicity of efforts involved in planning and executing a DL program, it is imperative that organizations view this nontraditional mode of knowledge transfer from a systems perspective. This paper presents a coordination-centric systems framework for implementing a DL program using the SIMILAR systems engineering process. The paper also suggests linking SIMILAR to two complementary models, Triple C and D-E-J-I, to enhance the overall systems approach. Implementing DL from a systems view aids in identifying the interrelating components, resource interfaces, and improvements needed in techniques used to deliver educational material at a distance. The proposed framework is effective in assisting DL instructors, students, administrators, and other stakeholders to improve the learning environment and manage the complex interaction of people, technology, and instructional processes. Because of its large and diverse operational base, the military is embracing DL programs aggressively. An example is presented of the DL program for graduate systems engineering program at the Air Force Institute of Technology (AFIT). (c) 2011 Wiley Periodicals, Inc. Syst Eng
C1 [Badiru, Adedeji B.; Jones, Rochelle R.] USAF, Inst Technol, Dayton, OH 45433 USA.
RP Badiru, AB (reprint author), USAF, Dept Syst & Engn Management, Inst Technol AFIT ENV, Wright Patterson AFB, OH 45433 USA.
EM adedeji.badiru@afit.edu
NR 40
TC 0
Z9 0
U1 1
U2 10
PU WILEY-BLACKWELL
PI MALDEN
PA COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA
SN 1098-1241
J9 SYSTEMS ENG
JI Syst. Eng.
PD SUM
PY 2012
VL 15
IS 2
BP 191
EP 202
DI 10.1002/sys.20202
PG 12
WC Engineering, Industrial; Operations Research & Management Science
SC Engineering; Operations Research & Management Science
GA 929IZ
UT WOS:000303055800005
ER

PT J
AU Miniscalco, WJ
   Lane, SA
AF Miniscalco, William J.
   Lane, Steven A.
TI Optical Space-Time Division Multiple Access
SO JOURNAL OF LIGHTWAVE TECHNOLOGY
LA English
DT Article
DE Free-space optical communications; free-space optical networking;
   multiple access optical channel; optical communications; physical
   network topology; satellite communications; space optical communications
ID PERFORMANCE
AB This work presents an approach to multiple access for free-space laser communication (lasercom) called space-time division multiple access, which aggregates traffic from multiple users at the network edge. The objective is to share resources to lower the cost, size, weight, and power consumption per user, thereby making lasercom feasible for users that require only moderate average information rates. This concept relies on fast, agile electronic beam steering, which was implemented in this investigation using liquid crystal optical phased arrays. We designed and built an experimental terminal incorporating a bidirectional communication aperture that was shared among the users, and two independently operated acquisition and tracking apertures. Using two remote user terminals, experiments were conducted to measure access node performance for a variety of operating conditions traceable to anticipated applications. The transmit and receive directions of the downlink and uplink communications channels were rapidly hopped between the two users, and data were exchanged between the access node and a user while the optical channel dwelled on the latter. Results showed that the measured information throughput efficiency correlated well with model predictions and was high enough to realize the expected advantages in applications with many users. Throughput efficiencies, defined as the actual data throughput as a percentage of the throughput without multiple access, exceeded 85% for dwell times of 100 ms and greater. This translates into an average information rate of > 400 Mb/s for as many as 20 simultaneous users. Current optical phased arrays are capable of providing fast transitions between remote users, with values measured in the range 10-18 ms. The use of persistent tracking links was a key factor in achieving fast transitions, and it was found that motion of the remote terminals had no significant impact on performance.
C1 [Miniscalco, William J.] Raytheon Co, Network Centr Syst, Marlborough, MA 01752 USA.
   [Lane, Steven A.] USAF, Res Lab, Space Vehicles Directorate, Kirtland AFB, NM 87117 USA.
RP Miniscalco, WJ (reprint author), Raytheon Co, Network Centr Syst, Marlborough, MA 01752 USA.
EM miniscalco@ieee.org; steven.lane@kirtland.af.mil
NR 33
TC 7
Z9 8
U1 0
U2 7
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 JUN 1
PY 2012
VL 30
IS 11
BP 1771
EP 1785
DI 10.1109/JLT.2012.2189935
PG 15
WC Engineering, Electrical & Electronic; Optics; Telecommunications
SC Engineering; Optics; Telecommunications
GA 923SP
UT WOS:000302639700002
ER

PT J
AU Zheng, XY
   Fontana, J
   Pevnyi, M
   Ignatenko, M
   Wang, S
   Vaia, R
   Palffy-Muhoray, P
AF Zheng, Xiaoyu
   Fontana, Jake
   Pevnyi, Mykhailo
   Ignatenko, Maxim
   Wang, Simi
   Vaia, Richard
   Palffy-Muhoray, Peter
TI The effects of nanoparticle shape and orientation on the low frequency
   dielectric properties of nanocomposites
SO JOURNAL OF MATERIALS SCIENCE
LA English
DT Article
ID ASPECT RATIO; COMPOSITES
AB In this paper, we examine the effects of aspect ratio and orientational order of nanoparticles on the dielectric properties of nanocomposites. The motivation is to clearly establish the effects of orientational order, since ambiguities exist in the literature. We focus on metallic nanoparticles, and show that, in the dilute concentration limit, theory, experiments and numerical simulations all unequivocally indicate that the effective dielectric constant increases with increasing aspect ratio and increasing degree of alignment of rod-like nanoparticles when they orient in direction of the electric field.
C1 [Pevnyi, Mykhailo; Ignatenko, Maxim; Palffy-Muhoray, Peter] Kent State Univ, Inst Liquid Crystal, Kent, OH 44242 USA.
   [Fontana, Jake] USN, Res Lab, Washington, DC 20375 USA.
   [Zheng, Xiaoyu] Kent State Univ, Dept Math Sci, Kent, OH 44242 USA.
   [Wang, Simi] Univ N Carolina, Dept Math, Chapel Hill, NC USA.
   [Vaia, Richard] USAF, Res Labs, Dayton, OH USA.
RP Palffy-Muhoray, P (reprint author), Kent State Univ, Inst Liquid Crystal, Kent, OH 44242 USA.
EM mpalffy@cpip.kent.edu
FU AFOSR under MURI [FA9550-06-10337]; NSF [DMS-0807954, DMS-0908470]
FX The authors are grateful to M. G. Forest and P. Mucha at UNC-CH and K.
   Park at AFRL WPAFB for useful discussions. P. P.-M. acknowledges support
   from the AFOSR under MURI grant FA9550-06-10337. X. Zheng acknowledges
   support from NSF under DMS-0807954, P. P.-M. and X. Zheng acknowledge
   support from NSF under DMS-0908470.
NR 20
TC 9
Z9 9
U1 2
U2 24
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 2012
VL 47
IS 12
BP 4914
EP 4920
DI 10.1007/s10853-012-6364-8
PG 7
WC Materials Science, Multidisciplinary
SC Materials Science
GA 918JJ
UT WOS:000302245300015
ER

PT J
AU Miller, TM
   Shuman, NS
   Viggiano, AA
AF Miller, Thomas M.
   Shuman, Nicholas S.
   Viggiano, A. A.
TI Behavior of rate coefficients for ion-ion mutual neutralization, 300-550
   K
SO JOURNAL OF CHEMICAL PHYSICS
LA English
DT Article
ID ELECTRON-TEMPERATURE RELAXATION; FLOWING-AFTERGLOW PLASMAS; LANGMUIR
   PROBE TECHNIQUE; RECOMBINATION COEFFICIENTS; ATTACHMENT; AR+
AB Rate coefficients k(MN) have been measured for a number of anion neutralization reactions with Ar+ and Kr+ over the temperature range 300-550 K. For the first time, the data set includes anions of radicals and other short-lived species. In the present paper, we review these results and make note of correlations with reduced mass, electron binding energy of the anion (equivalent to the electron affinity of the corresponding neutral), and temperature, and compare with expectations from absorbing sphere models. An intriguing result is that the data for diatomic anions neutralized by Ar+ and Kr+ have k(MN) values close to 3 x 10(-8) cm(3) s(-1) at 300 K, a figure which is lower than those for all of the polyatomic anions at 300 K except for SF5- + Kr+. For the polyatomic anions studied here, neutralized by Ar+ and Kr+, the reduced mass dependence agrees with theory, on average, but we find a stronger temperature dependence of T-0.9 than expected from the theoretical E-0.5 energy dependence of the rate coefficient at thermal energies. The kMN show a weak dependence on the electron binding energy of the anion for the polyatomic species studied. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4720499]
C1 [Miller, Thomas M.; Shuman, Nicholas S.; Viggiano, A. A.] USAF, Res Lab, Space Vehicles Directorate, Kirtland AFB, NM 87117 USA.
   [Miller, Thomas M.] Boston Coll, Inst Sci Res, Chestnut Hill, MA 02467 USA.
RP Miller, TM (reprint author), USAF, Res Lab, Space Vehicles Directorate, Kirtland AFB, NM 87117 USA.
FU (U.S.) Air Force Office of Scientific Research [AFOSR-2303EP]; 
   [FA8718-10-C-0002]
FX This project was funded by the (U.S.) Air Force Office of Scientific
   Research under Project AFOSR-2303EP. T. M. M. is under contract
   (Contract No. FA8718-10-C-0002) to Boston College.
NR 41
TC 19
Z9 19
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 0021-9606
J9 J CHEM PHYS
JI J. Chem. Phys.
PD MAY 28
PY 2012
VL 136
IS 20
AR 204306
DI 10.1063/1.4720499
PG 7
WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical
SC Chemistry; Physics
GA 952UL
UT WOS:000304818400027
PM 22667559
ER

PT J
AU Carrano, CS
   Groves, KM
   Caton, RG
AF Carrano, Charles S.
   Groves, Keith M.
   Caton, Ronald G.
TI Simulating the impacts of ionospheric scintillation on L band SAR image
   formation
SO RADIO SCIENCE
LA English
DT Article
ID BOTTOMSIDE SINUSOIDAL IRREGULARITIES; EQUATORIAL F-REGION; MODEL; RADAR;
   SCATTERING
AB We develop a phase screen model called the Synthetic Aperture Radar (SAR) Scintillation Simulator (SAR-SS) for predicting the impacts of ionospheric scintillation on SAR image formation. SAR-SS consists of a phase screen generator and a propagator. The screen generator creates a 2-D random realization of spatial phase fluctuations resulting from the traversal of small-scale field-aligned irregularities in the ionosphere. It accounts for the motion of the radar platform, the drift of the ionospheric irregularities, and the oblique angle of propagation, all of which determine the scale sizes of the irregularities sampled by the radar beam. The propagator solves the 3-D parabolic wave equation using the split step technique to compute the ionospheric transfer function for two-way propagation. This ionospheric transfer function is used to modulate the SAR signal due to terrestrial features in order to assess the ionospheric impact on SAR image formation in the small target approximation. We compare simulated and observed PALSAR imagery over Brazil during disturbed ionospheric conditions. We demonstrate that SAR-SS can reproduce the field-aligned streaks in PALSAR imagery caused by irregularities in the equatorial ionosphere that have been observed by previous authors. The field-aligned streaks exhibited a dominant wavelength larger than the Fresnel break scale, which suggests that refractive scatter was dominant over diffraction as the physical mechanism responsible for the scintillation of the radar signal in this case. The spectral index of phase fluctuations in the screen was quite large (9.0), suggesting that these irregularities were possibly associated with bottomside sinudoidal irregularities rather than equatorial plasma bubbles.
C1 [Carrano, Charles S.] Boston Coll, Inst Sci Res, Boston, MA 02467 USA.
   [Groves, Keith M.] USAF, Space Vehicles Directorate, Res Lab, Hanscom AFB, MA USA.
   [Caton, Ronald G.] USAF, Space Vehicles Directorate, Res Lab, Kirtland AFB, NM USA.
RP Carrano, CS (reprint author), Boston Coll, Inst Sci Res, Boston, MA 02467 USA.
EM charles.carrano@bc.edu
OI Carrano, Charles/0000-0003-1317-2453
FU Air Force [FA8718-09-C-0041]
FX The authors thank David Belcher and Neil Rogers for their helpful
   comments on SAR modeling, Franz Meyer for providing the PALSAR data, and
   User Systems who extracted the imagery and provided valuable feedback on
   our analysis. This work was sponsored by Air Force contract
   FA8718-09-C-0041.
NR 31
TC 13
Z9 13
U1 1
U2 10
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 0048-6604
J9 RADIO SCI
JI Radio Sci.
PD MAY 26
PY 2012
VL 47
AR RS0L20
DI 10.1029/2011RS004956
PG 14
WC Astronomy & Astrophysics; Geochemistry & Geophysics; Meteorology &
   Atmospheric Sciences; Remote Sensing; Telecommunications
SC Astronomy & Astrophysics; Geochemistry & Geophysics; Meteorology &
   Atmospheric Sciences; Remote Sensing; Telecommunications
GA 949CN
UT WOS:000304553500001
ER

PT J
AU Stone, DS
   Migas, J
   Martini, A
   Smith, T
   Muratore, C
   Voevodin, AA
   Aouadi, SM
AF Stone, D. S.
   Migas, J.
   Martini, A.
   Smith, T.
   Muratore, C.
   Voevodin, A. A.
   Aouadi, S. M.
TI Adaptive NbN/Ag coatings for high temperature tribological applications
SO SURFACE & COATINGS TECHNOLOGY
LA English
DT Article
DE Tribology; Friction; Chameleon coating; Niobium nitride; Silver niobate
ID NANOCOMPOSITE COATINGS; AEROSPACE APPLICATIONS; V2O5-MOO3-AG2O SYSTEM;
   DIELECTRIC-PROPERTIES; CHAMELEON COATINGS; PHASE-TRANSITIONS;
   THIN-FILMS; AGNBO3; ENVIRONMENTS; SCATTERING
AB Nanocomposite films that consist of niobium nitride with silver nanoinclusions were created using unbalanced magnetron sputtering to investigate their potential as adaptive, friction reducing coatings. The coatings were tribotested against a Si3N4 counterface in the 25 to 1000 degrees C temperature range. The coatings displayed coefficients of friction in the 0.15 to 0.30 range at T>700 degrees C. Post-wear testing structural and chemical characterization revealed that, in the low to mid-temperature range, silver migrated to the surface to reduce friction. At higher temperatures, oxygen, silver and the transition metal reacted to form lubricious binary metal oxide phases (silver niobate) in addition to pure silver. In situ Raman spectroscopy measurements were taken during heating and wear testing at 750 degrees C to identify the evolution of phases in the coatings surface and in the wear track. The analysis of the in situ Raman spectroscopy data revealed the various stages of formation of these binary metal oxides. The coatings were subsequently doped with MoS2 to investigate the effect of the introduction of a low temperature lubricant. The addition of MoS2 did not appreciably reduce the room temperature coefficient of friction, likely due to the miscibility of this compound with the transition metal nitride. However, the coefficient of friction was significantly reduced at high temperatures because of the synergistic lubricious effect of silver niobates and molybdates. (c) 2012 Elsevier B.V. All rights reserved .
C1 [Stone, D. S.; Migas, J.; Aouadi, S. M.] So Illinois Univ, Dept Phys, Carbondale, IL 62901 USA.
   [Martini, A.] Univ Calif Merced, Sch Engn, Merced, CA 95343 USA.
   [Smith, T.; Muratore, C.; Voevodin, A. A.] USAF, Res Lab, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA.
RP Aouadi, SM (reprint author), So Illinois Univ, Dept Phys, Carbondale, IL 62901 USA.
EM saouadi@physics.siu.edu
RI Martini, Ashlie/F-9320-2012; Voevodin, Andrey/I-6684-2013
OI Martini, Ashlie/0000-0003-2017-6081; 
FU Air Force Summer Fellowship Program at the Wright-Patterson Air Force
   Base in Fairborn, OH; Air Force Office of Scientific Research
   [FA9550-12-1-0221]; U.S. Department of the Army [W911NF-08-1-0460];
   National Science Foundation [0653986, 0959568]; U.S. Department of
   Energy [DE-FG02-07ER46453, DE-FG02-07ER46471]
FX The last author acknowledges support by an award from the Air Force
   Summer Fellowship Program to conduct research at the Wright-Patterson
   Air Force Base in Fairborn, OH. This research is also supported by the
   Air Force Office of Scientific Research (award no. FA9550-12-1-0221),
   the U.S. Department of the Army (award no. W911NF-08-1-0460) and by the
   National Science Foundation (award no. 0653986 and 0959568). XRD
   characterization was carried out in part in the Frederick Seitz
   Materials Research Laboratory Central Facilities, University of
   Illinois, which are partially supported by the U.S. Department of Energy
   under grants DE-FG02-07ER46453 and DE-FG02-07ER46471. The authors would
   like to also thank Drs. Naushad Ali and Igor Dubenko for providing XRD
   measurements.
NR 33
TC 20
Z9 24
U1 8
U2 79
PU ELSEVIER SCIENCE SA
PI LAUSANNE
PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND
SN 0257-8972
J9 SURF COAT TECH
JI Surf. Coat. Technol.
PD MAY 25
PY 2012
VL 206
IS 19-20
BP 4316
EP 4321
DI 10.1016/j.surfcoat.2012.04.054
PG 6
WC Materials Science, Coatings & Films; Physics, Applied
SC Materials Science; Physics
GA 963ZB
UT WOS:000305662400068
ER

PT J
AU Welter, JT
   Sathish, S
   Dierken, JM
   Brodrick, PG
   Cherry, MR
   Heebl, JD
AF Welter, John T.
   Sathish, Shamachary
   Dierken, Josiah M.
   Brodrick, Philip G.
   Cherry, Matthew R.
   Heebl, Jason D.
TI Broadband aperiodic air coupled ultrasonic lens
SO APPLIED PHYSICS LETTERS
LA English
DT Article
ID METAMATERIALS
AB This paper demonstrates the possibility of subwavelength, defined as less than the incident wavelength, broadband focusing in an aperiodic air coupled ultrasonic lens. A near field probe is used to detect well defined resonances from 75 to 125 kHz. The spatial resolution at each of the resonant frequencies is determined and demonstrated to be smaller than the wavelength of the ultrasonic waves. The strongest resonance is observed at 82.9 kHz with a focal spot size of 3.12 mm. The subwavelength spatial resolution of the lens structures at the resonances is attributed to the near field scattering of the acoustic waves. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4720149]
C1 [Welter, John T.] USAF, Res Lab, Nondestruct Evaluat Branch AFRL RXLP, Wright Patterson AFB, OH 45433 USA.
   [Sathish, Shamachary; Cherry, Matthew R.] Univ Dayton, Res Inst, Struct Integr Div, Dayton, OH 45469 USA.
   [Dierken, Josiah M.] SW Ohio Council Higher Educ, Kettering, OH 45429 USA.
   [Brodrick, Philip G.] SW Ohio Council Higher Educ, Cincinnati, OH 45242 USA.
   [Heebl, Jason D.] USAF, Space & Missile Command, AFSPC SNE, Los Angeles AFB, CA 90245 USA.
RP Welter, JT (reprint author), USAF, Res Lab, Nondestruct Evaluat Branch AFRL RXLP, 2230 10th St, Wright Patterson AFB, OH 45433 USA.
EM John.Welter@wpafb.af.mil
RI Brodrick, Philip/B-4496-2015
FU U. S. Air Force [FA8650-09-D-5224, FA8650-09-2-5800]
FX The authors would like to acknowledge the contributions of D. E.
   Christensen, T. R. Boehnlein, and R. Reibel. Portions of this work were
   performed under U. S. Air Force Contracts FA8650-09-D-5224 and
   FA8650-09-2-5800.
NR 26
TC 2
Z9 2
U1 0
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 0003-6951
J9 APPL PHYS LETT
JI Appl. Phys. Lett.
PD MAY 21
PY 2012
VL 100
IS 21
AR 214102
DI 10.1063/1.4720149
PG 3
WC Physics, Applied
SC Physics
GA 948FV
UT WOS:000304489900097
ER

PT J
AU Gunturk, BK
   Miller, NJ
   Watson, EA
AF Gunturk, Bahadir K.
   Miller, Nicholas J.
   Watson, Edward A.
TI Camera phasing in multi-aperture coherent imaging
SO OPTICS EXPRESS
LA English
DT Article
ID ATMOSPHERIC-TURBULENCE
AB The resolution of a diffraction-limited imaging system is inversely proportional to the aperture size. Instead of using a single large aperture, multiple small apertures are used to synthesize a large aperture. Such a multi-aperture system is modular, typically more reliable and less costly. On the other hand, a multi-aperture system requires phasing sub-apertures to within a fraction of a wavelength. So far in the literature, only the piston, tip, and tilt type of inter-aperture errors have been addressed. In this paper, we present an approach to correct for rotational and translational errors as well. (C) 2012 Optical Society of America
C1 [Gunturk, Bahadir K.] Louisiana State Univ, Dept Elect & Comp Engn, Baton Rouge, LA 70803 USA.
   [Miller, Nicholas J.] Univ Dayton, Ladar & Opt Commun Inst, Dayton, OH 45469 USA.
   [Watson, Edward A.] USAF, Res Lab, Sensors Directorate, Wright Patterson AFB, OH 45433 USA.
RP Gunturk, BK (reprint author), Louisiana State Univ, Dept Elect & Comp Engn, Baton Rouge, LA 70803 USA.
EM bahadir@ece.lsu.edu
NR 15
TC 3
Z9 3
U1 0
U2 1
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 21
PY 2012
VL 20
IS 11
BP 11796
EP 11805
DI 10.1364/OE.20.011796
PG 10
WC Optics
SC Optics
GA 947CB
UT WOS:000304403100024
PM 22714167
ER

PT J
AU Oesch, DW
   Sanchez, DJ
AF Oesch, Denis W.
   Sanchez, Darryl J.
TI Creating well-defined orbital angular momentum states with a random
   turbulent medium
SO OPTICS EXPRESS
LA English
DT Article
ID LAGUERRE-GAUSSIAN BEAMS; ATMOSPHERIC-TURBULENCE; OPTICAL VORTICES;
   POYNTING VECTOR; LASER MODES; LIGHT; PROPAGATION
AB Previous work by Allen, demonstrated that optical beams possess orbital angular momentum. Other work has shown that a random, phase-only disturbance can impart +/- 1 orbital angular momentum states to propagating waves. However, the field preceding the formation of these +/- 1 states was unknown. In this paper, we identify the unique field that leads to the formation of a pair of branch points, indicators of orbital angular momentum. This field is then verified in a bench-top optical experiment. (C) 2012 Optical Society of America
C1 [Oesch, Denis W.] Sci Applicat Int Corp, Albuquerque, NM USA.
   [Sanchez, Darryl J.] USAF, Res Lab, Directed Energy Directorate, Kirtland AFB, NM USA.
RP Oesch, DW (reprint author), Sci Applicat Int Corp, Albuquerque, NM USA.
EM denis.w.oesch@saic.com
FU Air Force Office of Scientific Research
FX We would like to express our gratitude to the Air Force Office of
   Scientific Research for their support in funding this research.
NR 32
TC 4
Z9 4
U1 1
U2 11
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 21
PY 2012
VL 20
IS 11
BP 12292
EP 12302
DI 10.1364/OE.20.012292
PG 11
WC Optics
SC Optics
GA 947CB
UT WOS:000304403100074
PM 22714217
ER

PT J
AU Davis, AA
   Yaney, PP
   Grote, JG
AF Davis, Antonio A.
   Yaney, Perry P.
   Grote, James G.
TI Optimized half-wave voltage and insertion loss in a strip-loaded
   waveguide electro-optic polymer modulator
SO APPLIED OPTICS
LA English
DT Article
ID DEOXYRIBONUCLEIC-ACID; OPTICAL-FIBERS; MODE
AB A strip-loaded waveguide, electro-optic modulator was designed and analyzed in terms of single mode conditions, optical loss due to the metal electrodes, modulation efficiency, and mode size. Two designs were compared: Design 1 optimized the half-wave voltage (V-pi = 1.1 V) with a nearly symmetric waveguide by maximizing modulation efficiency and minimizing the overall thickness of the waveguide; Design 2 optimized the insertion loss by reducing coupling loss by 4.6 dB via a strongly asymmetric waveguide that maximizes the overall mode size to most efficiently overlap with a single mode fiber. Design 2 also has a favorable half-wave voltage (V-pi = 1.75V). Some general guidelines in the selection of cladding layers in a detailed design of a poled-polymer electro-optic modulator incorporating a strip-loaded waveguide structure are suggested. (C) 2012 Optical Society of America
C1 [Davis, Antonio A.; Yaney, Perry P.] Univ Dayton, Electroopt Program, Dayton, OH 45469 USA.
   [Yaney, Perry P.] Univ Dayton, Dept Phys, Dayton, OH 45459 USA.
   [Grote, James G.] USAF, Mat & Mfg Directorate, Res Lab, Wright Patterson AFB, OH 45433 USA.
RP Davis, AA (reprint author), Univ Dayton, Electroopt Program, Dayton, OH 45469 USA.
EM aadavis.engineer@yahoo.com
FU Air Force Research Laboratory, Materials and Manufacturing Directorate
   (AFRL/RX); Air Force Office of Scientific Research (AFOSR); University
   of Dayton (UD); Dayton Area Graduate Studies Institute (DAGSI)
FX The authors would like to acknowledge the support of the Air Force
   Research Laboratory, Materials and Manufacturing Directorate (AFRL/RX),
   the Air Force Office of Scientific Research (AFOSR), the University of
   Dayton (UD), and the Dayton Area Graduate Studies Institute (DAGSI).
   Special thanks to Mr. Gerry Landis and Mr. Steve Smith from the
   University of Dayton Research Institute (UDRI) for their technical
   assistance.
NR 23
TC 1
Z9 1
U1 1
U2 6
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 20
PY 2012
VL 51
IS 15
BP 2917
EP 2924
DI 10.1364/AO.51.002917
PG 8
WC Optics
SC Optics
GA 945AY
UT WOS:000304246400017
PM 22614594
ER

PT J
AU Kosa, T
   Sukhomlinova, L
   Su, LL
   Taheri, B
   White, TJ
   Bunning, TJ
AF Kosa, Tamas
   Sukhomlinova, Ludmila
   Su, Linli
   Taheri, Bahman
   White, Timothy J.
   Bunning, Timothy J.
TI Light-induced liquid crystallinity
SO NATURE
LA English
DT Article
ID PHASE; NAPHTHOPYRAN
AB Liquid crystals are traditionally classified as thermotropic, lyotropic or polymeric, based on the stimulus that governs the organization and order of the molecular system(1). The most widely known and applied class of liquid crystals are a subset of thermotropic liquid crystals known as calamitic, in which adding heat can result in phase transitions from or into the nematic, cholesteric and smectic mesophases. Photoresponsive liquid-crystal materials and mixtures can undergo isothermal phase transitions if light affects the order parameter of the system within a mesophase sufficiently. In nearly all previous examinations, light exposure of photoresponsive liquid-crystal materials and mixtures resulted in order-decreasing photo-induced isothermal phase transitions(2). Under specialized conditions, an increase in order with light exposure has been reported, despite the tendency of the photoresponsive liquid-crystal system to reduce order in the exposed state(3-7). A direct, photoinduced transition from the isotropic to the nematic phase has been observed in a mixture of spiropyran molecules and a nematic liquid crystal(8). Here we report a class of naphthopyran-based materials that exhibit photo-induced conformational changes in molecular structure capable of yielding order-increasing phase transitions. Appropriate functionalization of the naphthopyran molecules leads to an exceedingly large order parameter in the open form, which results in a clear to strongly absorbing dichroic state. The increase in order with light exposure has profound implications in optics, photonics, lasing and displays and will merit further consideration for applications in solar energy harvesting. The large, photoinduced dichroism exhibited by the material system has been long sought in ophthalmic applications such as photochromic and polarized variable transmission sunglasses.
C1 [Kosa, Tamas; Sukhomlinova, Ludmila; Su, Linli; Taheri, Bahman] Alpha Micron Inc, Kent, OH 44240 USA.
   [White, Timothy J.; Bunning, Timothy J.] Mat & Mfg Directorate, AF Res Lab, Wright Patterson AFB, OH 45433 USA.
RP Kosa, T (reprint author), Alpha Micron Inc, Kent, OH 44240 USA.
EM tamas@alphamicron.com; timothy.white2@wpafb.af.mil
RI White, Timothy/D-4392-2012
FU US Air Force Office of Scientific Research; Materials and Manufacturing
   Directorate of the US Air Force Office of Scientific Research; US Air
   Force [FA8650-05-D-5807]
FX T.J.W. and T.J.B. were supported by the US Air Force Office of
   Scientific Research and the Materials and Manufacturing Directorate of
   the US Air Force Office of Scientific Research. T. K., L. Sukhomlinova,
   L. Su and B. T acknowledge partial support through US Air Force contract
   FA8650-05-D-5807.
NR 11
TC 68
Z9 68
U1 12
U2 163
PU NATURE PUBLISHING GROUP
PI LONDON
PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND
SN 0028-0836
J9 NATURE
JI Nature
PD MAY 17
PY 2012
VL 485
IS 7398
BP 347
EP 349
DI 10.1038/nature11122
PG 3
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA 943CW
UT WOS:000304099100037
PM 22596158
ER

PT J
AU Edwards, AH
   Campbell, KA
   Pineda, AC
AF Edwards, A. H.
   Campbell, Kristy A.
   Pineda, Andrew C.
TI Self-trapping of single and paired electrons in Ge2Se3
SO JOURNAL OF PHYSICS-CONDENSED MATTER
LA English
DT Article
ID COMPACT EFFECTIVE POTENTIALS; EXPONENT BASIS-SETS; ALPHA-QUARTZ;
   CHALCOGENIDE SYSTEMS; GLASS-FORMATION; SILICON DIOXIDE; ALO4 CENTERS;
   THIN-FILMS; SCF-MO; HOLES
AB We report the theoretical prediction of single and paired electron self-trapping in Ge2Se3. In finite atomic cluster, density functional calculations, we show that excess single electrons in Ge2Se3 are strongly localized around single germanium dimers. We also find that two electrons prefer to trap around the same germanium dimer, rupturing a neighboring Ge-Se bond. Localization is less robust in periodic, density functional calculations. While paired electron self-trapping is present, as shown by wavefunction localization around a distorted Ge-Ge dimer, single-electron trapping is not. This discrepancy appears to depend only on the boundary conditions and not on the exchange-correlation potential or basis set. For single- and paired-electron trapping, we report the adiabatic barriers to motion and we estimate hopping rates and freeze-in temperatures. For the single trapped electron, we also predict the Ge-73 and Se-77 hyperfine coupling constants.
C1 [Edwards, A. H.] USAF, Res Lab, AFRL RVSE, Kirtland AFB, NM 87117 USA.
   [Campbell, Kristy A.] Boise State Univ, Dept Elect & Comp Engn, Boise, ID 83725 USA.
   [Pineda, Andrew C.] Univ New Mexico, Dept Elect & Comp Engn, Albuquerque, NM 87131 USA.
RP Edwards, AH (reprint author), USAF, Res Lab, AFRL RVSE, Kirtland AFB, NM 87117 USA.
EM arthur.edwards@kirtland.af.mil; KrisCampbell@boisestate.edu;
   andrew.pineda@kirtland.af.mil
FU AFRL [FA9453-08-2-0252]
FX It is a pleasure to thank Professors Hugh Barnaby and W B Fowler, and Dr
   Peter Schultz, for valuable discussions during the preparation of this
   paper. This work was partially funded under AFRL grant FA9453-08-2-0252.
   We also gratefully acknowledge the use of computing facilities in the
   Electrical and Computer Engineering Department at Boise State
   University, and at Sandia National Laboratories.
NR 53
TC 3
Z9 3
U1 0
U2 2
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0953-8984
J9 J PHYS-CONDENS MAT
JI J. Phys.-Condes. Matter
PD MAY 16
PY 2012
VL 24
IS 19
AR 195801
DI 10.1088/0953-8984/24/19/195801
PG 9
WC Physics, Condensed Matter
SC Physics
GA 935EE
UT WOS:000303501000014
PM 22498509
ER

PT J
AU Jiao, CQ
   Adams, SF
AF Jiao, C. Q.
   Adams, S. F.
TI Gas-phase ion-molecule reactions in selected cyclohexanes
SO INTERNATIONAL JOURNAL OF MASS SPECTROMETRY
LA English
DT Article
DE Ion-molecule reaction; Cyclohexane; Methylcyclohexane; Ethylcyclohexane;
   Mass spectrometry
ID RESONANCE MASS-SPECTROMETRY; CHEMICAL-IONIZATION; SURROGATE MIXTURES;
   EXCITATION; COMBUSTION
AB Ion-molecule reactions of cyclohexane, methylcyclohexane and ethylcyclohexane with hydrocarbon cations derived from these cyclohexanes, respectively, have been studied. These ion-molecule reactions take place via various channels including charge transfer, H- transfer, H-2(-) transfer, H-3(-) transfer, hydrocarbon anion transfer, and association with concerted fragmentation. Among these channels, H- transfer is the most prevalent, and for many of the reacting ions, it is the exclusive channel. Most of the reactions proceed in a direct mode, except for the reactions of C4H5+ or C4H7+ with cyclohexane, which in certain channels proceed via the formation of a long-lived collision complex. Some general trends in the reaction rates are observed: smaller reactant ions tend to exhibit faster reaction rates, and odd-electron ions react faster than the even-electron ions. For certain reactant ions, there is evidence of the existence of multiple structural isomers that have different reactivities. Published by Elsevier B.V.
C1 [Adams, S. F.] USAF, Res Laboratory, Wright Patterson AFB, OH 45433 USA.
   [Jiao, C. Q.] Universal Energy Syst Inc, Dayton, OH 45432 USA.
RP Adams, SF (reprint author), USAF, Res Laboratory, Wright Patterson AFB, OH 45433 USA.
EM steven.adams@wpafb.af.mil
FU Propulsion Directorate AFRL; Air Force Office of Scientific Research
FX The authors thank the Propulsion Directorate AFRL and the Air Force
   Office of Scientific Research for their support.
NR 27
TC 0
Z9 0
U1 1
U2 10
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 1387-3806
J9 INT J MASS SPECTROM
JI Int. J. Mass Spectrom.
PD MAY 15
PY 2012
VL 321
BP 33
EP 39
DI 10.1016/j.ijms.2012.05.012
PG 7
WC Physics, Atomic, Molecular & Chemical; Spectroscopy
SC Physics; Spectroscopy
GA 991HG
UT WOS:000307691500006
ER

PT J
AU Goodhue, WG
   Reeder, RE
   Vineis, CJ
   Calawa, SD
   Dauplaise, HM
   Vangala, S
   Walsh, MP
   Harman, TC
AF Goodhue, W. G.
   Reeder, R. E.
   Vineis, C. J.
   Calawa, S. D.
   Dauplaise, H. M.
   Vangala, S.
   Walsh, M. P.
   Harman, T. C.
TI High-output-power densities from molecular beam epitaxy grown n- and
   p-type PbTeSe-based thermoelectrics via improved contact metallization
SO JOURNAL OF APPLIED PHYSICS
LA English
DT Article
ID BARRIER; GAAS
AB Electrical power densities of up to 33 W/cm(2) and up to 12 W/cm(2) were obtained for n-type and p-type PbTeSe-based stand-alone thermoelectric devices, respectively, at modest temperature gradients of similar to 200 degrees C (T-cold = 25 degrees C). These large power densities were enabled by greatly improving electrical contact resistivities in the thermoelectric devices. Electrical contacts with contact resistivities as low as 3.9 x 10(-6) Omega cm(2) and 4.0 x 10(-6) Omega cm(2) for n- and p-type telluride-based- materials, respectively, were developed by investigating several metallization schemes and contact layer doping/alloy combinations, in conjunction with a novel contact application process. This process exposes heated semiconductor surfaces to an atomic hydrogen flux under high vacuum for surface cleaning (oxide and carbon removal), followed immediately by an in-situ electron-beam evaporation of the metal layers. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4712425]
C1 [Goodhue, W. G.; Reeder, R. E.; Vineis, C. J.; Calawa, S. D.; Walsh, M. P.; Harman, T. C.] MIT, Lincoln Lab, Lexington, MA 02420 USA.
   [Goodhue, W. G.; Vangala, S.] Univ Massachusetts Lowell, Photon Ctr, Lowell, MA 01854 USA.
   [Dauplaise, H. M.] USAF, Res Lab, Sensors Directorate, Hanscom AFB, MA 01731 USA.
RP Goodhue, WG (reprint author), MIT, Lincoln Lab, Lexington, MA 02420 USA.
EM goodhue@ll.mit.edu
NR 21
TC 1
Z9 1
U1 2
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 0021-8979
J9 J APPL PHYS
JI J. Appl. Phys.
PD MAY 15
PY 2012
VL 111
IS 10
AR 104501
DI 10.1063/1.4712425
PG 8
WC Physics, Applied
SC Physics
GA 960BT
UT WOS:000305363700151
ER

PT J
AU Gearba, MA
   Sell, JF
   Patterson, BM
   Lloyd, R
   Plyler, J
   Knize, RJ
AF Gearba, M. A.
   Sell, J. F.
   Patterson, B. M.
   Lloyd, R.
   Plyler, J.
   Knize, R. J.
TI Temperature dependence of Rb 5P fine-structure transfer induced by He-4
   collisions
SO OPTICS LETTERS
LA English
DT Article
ID 795-NM RUBIDIUM LASER; EXCITATION-TRANSFER; ATOMS
AB Employing ultrafast laser excitation and time-correlated single-photon counting, we have measured the fine-structure transfer between Rb 5P states induced by collisions with He-4 buffer gas at temperatures up to 150 degrees C. The temperature dependence of the binary cross section agrees with earlier measurements. Our data show that the temperature dependence of the three-body rate is about the same as that of the binary rate. The three-body rate can be described as arising from the reduction of the rubidium fine-structure splitting due to nearby helium atoms. (C) 2012 Optical Society of America
C1 [Gearba, M. A.; Sell, J. F.; Patterson, B. M.; Lloyd, R.; Plyler, J.; Knize, R. J.] USAF Acad, Laser & Opt Res Ctr, Dept Phys, Colorado Springs, CO 80840 USA.
   [Gearba, M. A.] Univ So Mississippi, Dept Phys & Astron, Hattiesburg, MS 39406 USA.
RP Gearba, MA (reprint author), USAF Acad, Laser & Opt Res Ctr, Dept Phys, Colorado Springs, CO 80840 USA.
EM alina.gearba@usm.edu
FU Air Force Office of Scientific Research; National Science Foundation
   [0758185]
FX The authors acknowledge the support of this research by the Air Force
   Office of Scientific Research and the National Science Foundation (grant
   0758185).
NR 12
TC 2
Z9 2
U1 0
U2 5
PU OPTICAL SOC AMER
PI WASHINGTON
PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA
SN 0146-9592
EI 1539-4794
J9 OPT LETT
JI Opt. Lett.
PD MAY 15
PY 2012
VL 37
IS 10
BP 1637
EP 1639
PG 3
WC Optics
SC Optics
GA 945YE
UT WOS:000304312000014
PM 22627521
ER

PT J
AU Vergien, C
   Dajani, I
   Robin, C
AF Vergien, Christopher
   Dajani, Iyad
   Robin, Craig
TI 18 W single-stage single-frequency acoustically tailored Raman fiber
   amplifier
SO OPTICS LETTERS
LA English
DT Article
AB A single-mode polarization-maintaining fiber doped to increase the Raman gain while suppressing stimulated Brillouin scattering (SBS) was utilized in a single-stage counter-pumped Raman fiber amplifier. The SBS suppression was achieved through the acoustic tailoring of the core. A pump probe experiment was conducted to characterize the Brillouin gain and indicated the existence of multiple Brillouin peaks. When the amplifier was seeded with approximately 15 mW of 1178 nm light, 11.5 W of cw output power was obtained with a linewidth <= 2 MHz. The application of a thermal gradient to further mitigate the SBS process increased the output power to 18 W, thus providing a net amplifier gain >30 dB. (C) 2012 Optical Society of America
C1 [Vergien, Christopher; Dajani, Iyad; Robin, Craig] USAF, Adv Elect Lasers Branch, Res Lab, Kirtland AFB, NM 87117 USA.
RP Vergien, C (reprint author), USAF, Adv Elect Lasers Branch, Res Lab, 3550 Aberdeen Ave SE, Kirtland AFB, NM 87117 USA.
EM chris.vergien@gmail.com
NR 6
TC 10
Z9 10
U1 0
U2 4
PU OPTICAL SOC AMER
PI WASHINGTON
PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA
SN 0146-9592
J9 OPT LETT
JI Opt. Lett.
PD MAY 15
PY 2012
VL 37
IS 10
BP 1766
EP 1768
PG 3
WC Optics
SC Optics
GA 945YE
UT WOS:000304312000057
PM 22627564
ER

PT J
AU Reed, AN
   Lange, MA
   Muratore, C
   Bultman, JE
   Jones, JG
   Voevodin, AA
AF Reed, A. N.
   Lange, M. A.
   Muratore, C.
   Bultman, J. E.
   Jones, J. G.
   Voevodin, A. A.
TI Pressure effects on HiPIMS deposition of hafnium films
SO SURFACE & COATINGS TECHNOLOGY
LA English
DT Article
DE HiPIMS; Hafnium; Titanium; Deposition parameters; Pressure;
   Crystallographic orientation
ID PHYSICAL VAPOR-DEPOSITION; ION-BOMBARDMENT; ASSISTED DEPOSITION; GAS
   RAREFACTION; POWER DENSITIES; MAGNETRON; ORIENTATION; COATINGS; ENERGY;
   MICROSTRUCTURE
AB High power impulse magnetron sputtering (HiPIMS) was studied during the growth of hafnium films at argon pressures ranging from 0.80 to 5.33 Pa with a fixed pulse length (50 mu s) and frequency (200 Hz). The effect of inert gas pressure on the plasma conditions and film structure was investigated. The peak target current increased with pressure, but its sensitivity decreased above 2.00 Pa, which corresponded to an increased ratio of ions to neutrals in the plasma. A comparison of plasma characteristics between Hf and Ti HiPIMS growth was made. In addition to pressure, the target currents were affected by the physical properties of the target material, particularly the secondary ionization energy and atomic mass. Sputtering gas rarefaction phenomena were found to be more pronounced for Hf, and as a result, the process characteristics and film properties had a strong interdependence on argon pressure discussed in this study. The microstructure of the hafnium films was analyzed with scanning electron microscopy and X-ray diffraction. When compared to Hf films deposited by dc magnetron sputtering, the HiPIMS process resulted in a decreased grain size and promoted the growth of the (100) orientation in the Hf films. These results demonstrate that Hf HiPIMS sputtering regimes have much stronger dependence on the working gas pressure compared to titanium, and these need to be taken into account to ensure that films are dense and have the desired morphology and crystallographic orientation. Published by Elsevier B.V.
C1 [Reed, A. N.; Lange, M. A.; Muratore, C.; Jones, J. G.; Voevodin, A. A.] USAF, Thermal Sci & Mat Branch, Mat & Mfg Directorate, Res Lab, Wright Patterson AFB, OH 45433 USA.
   [Lange, M. A.] Universal Technol Corp, Dayton, OH 45432 USA.
   [Bultman, J. E.] Univ Dayton, Res Inst, Dayton, OH 45469 USA.
RP Reed, AN (reprint author), USAF, Thermal Sci & Mat Branch, Mat & Mfg Directorate, Res Lab, 2941 Hobson Way, Wright Patterson AFB, OH 45433 USA.
EM Amber.Reed@WPAFB.AF.MIL; Matthew.Lange.ctr@WPAFB.AF.MIL;
   Christopher.Muratore@WPAFB.AF.MIL; John.Bultman.ctr@WPAFB.AF.MIL;
   John.Jones@WPAFB.AF.MIL; Andrey.Voevodin@WPAFB.AF.MIL
RI Voevodin, Andrey/I-6684-2013
FU Air Force Office of Scientific Research
FX This work was supported by the Air Force Office of Scientific Research.
NR 50
TC 5
Z9 8
U1 0
U2 25
PU ELSEVIER SCIENCE SA
PI LAUSANNE
PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND
SN 0257-8972
J9 SURF COAT TECH
JI Surf. Coat. Technol.
PD MAY 15
PY 2012
VL 206
IS 18
BP 3795
EP 3802
DI 10.1016/j.surfcoat.2012.03.045
PG 8
WC Materials Science, Coatings & Films; Physics, Applied
SC Materials Science; Physics
GA 944OS
UT WOS:000304214300013
ER

PT J
AU Moon, JS
   Antcliffe, M
   Seo, HC
   Curtis, D
   Lin, S
   Schmitz, A
   Milosavljevic, I
   Kiselev, AA
   Ross, RS
   Gaskill, DK
   Campbell, PM
   Fitch, RC
   Lee, KM
   Asbeck, P
AF Moon, J. S.
   Antcliffe, M.
   Seo, H. C.
   Curtis, D.
   Lin, S.
   Schmitz, A.
   Milosavljevic, I.
   Kiselev, A. A.
   Ross, R. S.
   Gaskill, D. K.
   Campbell, P. M.
   Fitch, R. C.
   Lee, K. -M.
   Asbeck, P.
TI Ultra-low resistance ohmic contacts in graphene field effect transistors
SO APPLIED PHYSICS LETTERS
LA English
DT Article
ID DEVICE
AB We report on an experimental demonstration of graphene-metal ohmic contacts with contact resistance below 100 Omega mu m. These have been fabricated on graphene wafers, both with and without hydrogen intercalation, and measured using the transmission line method. Specific contact resistivities of 3 x 10(-7) to 1.2 x 10(-8) Omega cm(2) have been obtained. The ultra-low contact resistance yielded short-channel (source-drain distance of 0.45 mu m) HfO2/graphene field effect transistors (FETs) with a low on-resistance (R-on) of 550 Omega mu m and a high current density of 1.7 A/mm at a source-drain voltage of 1V. These values represent state-of-the-art (SOA) performance in graphene-metal contacts and graphene FETs. This ohmic contact resistance is comparable to that of SOA high-speed III-V high electron mobility transistors. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4719579]
C1 [Moon, J. S.; Antcliffe, M.; Seo, H. C.; Curtis, D.; Lin, S.; Schmitz, A.; Milosavljevic, I.; Kiselev, A. A.; Ross, R. S.] HRL Labs LLC, Malibu, CA 90265 USA.
   [Gaskill, D. K.; Campbell, P. M.] USN, Res Lab, Washington, DC 20375 USA.
   [Fitch, R. C.] USAF, Res Lab, Wright Patterson AFB, OH 45433 USA.
   [Lee, K. -M.; Asbeck, P.] Univ Calif San Diego, La Jolla, CA 92093 USA.
RP Moon, JS (reprint author), HRL Labs LLC, 3011 Malibu Canyon Rd, Malibu, CA 90265 USA.
FU Defense Advanced Research Projects Agency (DARPA); SPAWAR
   [N66001-08-C-2048]
FX This work was supported by the Defense Advanced Research Projects Agency
   (DARPA) and monitored by Dr. John Albrecht at DARPA under SPAWAR
   Contract No. N66001-08-C-2048. The views, opinions, and/or findings
   contained in this article/presentation are those of the author/presenter
   and should not be interpreted as representing the official views or
   policies, either expressed or implied, of the Defense Advanced Research
   Projects Agency or the Department of Defense.
NR 17
TC 50
Z9 51
U1 9
U2 91
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 14
PY 2012
VL 100
IS 20
AR 203512
DI 10.1063/1.4719579
PG 3
WC Physics, Applied
SC Physics
GA 945HZ
UT WOS:000304265000096
ER

PT J
AU Xue, CM
   Birel, O
   Gao, M
   Zhang, S
   Dai, LM
   Urbas, A
   Li, Q
AF Xue, Chenming
   Birel, Ozgul
   Gao, Min
   Zhang, Sheng
   Dai, Liming
   Urbas, Augustine
   Li, Quan
TI Perylene Monolayer Protected Gold Nanorods: Unique Optical, Electronic
   Properties and Self-Assemblies
SO JOURNAL OF PHYSICAL CHEMISTRY C
LA English
DT Article
ID HIGH-YIELD SYNTHESIS; ROOM-TEMPERATURE; AQUEOUS-SOLUTION; BISIMIDE DYES;
   AU NANORODS; PI-STACKS; NANOPARTICLES; CLUSTERS; FLUORESCENCE;
   POLYELECTROLYTE
AB Here we report the synthesis and characterization of organosoluble perylene monolayer protected gold nanorods. From H-1 NMR, FT-IR, and differential scanning calorimetry experiments, the successful thiol exchange and stacking of perylene molecules on gold nanorods were confirmed. The resulting gold nanorods encapsulated with perylene thiol molecules via strong covalent Au-S linkages showed unique optical and electronic properties compared to the initial free perylene molecules and gold nanorods, indicating there were strong interactions between perylene chromophores and gold nanorods. When attached on gold nanorods, the perylene chromophores did not exhibit any typical UV-vis absorption or fluorescence emission signal, originating from the charge transfer from gold nanorods to perylene chromophores. However, the missing signals reappeared upon the addition of iodine, which detached the perylene molecules from gold nanorods. For the hybrid gold nanorods, particular electronic properties were also investigated by cyclic voltammetry and electron diffraction. Furthermore, with strong pi-pi intermolecular interactions, the perylene thiol monolayer protected gold nanorods were able to aggregate. When drying from highly diluted solution, gold nanorods formed well-organized side-by-side self-assembly arrays.
C1 [Xue, Chenming; Birel, Ozgul; Gao, Min; Li, Quan] Kent State Univ, Inst Liquid Crystal, Kent, OH 44242 USA.
   [Birel, Ozgul] Mugla Univ, Dept Chem, TR-48121 Mugla, Turkey.
   [Zhang, Sheng; Dai, Liming] Case Western Reserve Univ, Cleveland, OH 44106 USA.
   [Urbas, Augustine] USAF, Mat & Mfg Directorate, Res Lab WPAFB, Wright Patterson AFB, OH 45433 USA.
RP Li, Q (reprint author), Kent State Univ, Inst Liquid Crystal, Kent, OH 44242 USA.
EM qli1@kent.edu
RI Zhang, Sheng/H-2452-2011
OI Zhang, Sheng/0000-0001-7532-1923
FU Air Force Office of Scientific Research (AFOSR) [FA9550-09-1-0254];
   AFOSR-MURI [FA9550-12-1-0037]; TUBITAK from Turkey [2219]; Ohio Research
   Scholars Program Research Cluster on Surfaces in Advanced Materials
FX This work was supported by the Air Force Office of Scientific Research
   (AFOSR FA9550-09-1-0254). Support from AFOSR-MURI (FA9550-12-1-0037) and
   TUBITAK (2219) from Turkey is also acknowledged. The TEM data were
   obtained at the (cryo) TEM facility at the Liquid Crystal Institute,
   Kent State University, supported by the Ohio Research Scholars Program
   Research Cluster on Surfaces in Advanced Materials.
NR 65
TC 24
Z9 24
U1 6
U2 67
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 MAY 10
PY 2012
VL 116
IS 18
BP 10396
EP 10404
DI 10.1021/jp301816p
PG 9
WC Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science,
   Multidisciplinary
SC Chemistry; Science & Technology - Other Topics; Materials Science
GA 939VY
UT WOS:000303848600068
ER

PT J
AU Anderson, C
   Conde, M
   McHarg, MG
AF Anderson, C.
   Conde, M.
   McHarg, M. G.
TI Neutral thermospheric dynamics observed with two scanning Doppler
   imagers: 3. Horizontal wind gradients
SO JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
LA English
DT Article
ID POLAR THERMOSPHERE; VERTICAL WINDS; HIGH-LATITUDES; F-REGION;
   ATMOSPHERE; ION; EXPLORER; ARECIBO; ALASKA; RADAR
AB This is the third and final article in a series of papers reporting on observations of the 630.0 nm thermospheric airglow emission by two spatially separated scanning Doppler imagers (SDI's) in Alaska. In this article, bistatic winds derived from the combined measurements of both instruments in a region of field-of-view overlap were used to derive local-scale maps of horizontal neutral wind gradients. Averaged over the bistatic 'field-of-view', these gradient estimates were compared with the monostatic gradient estimates routinely produced by the two SDI's. The key findings to emerge from this study include: 1) the bistatic gradient estimate agreed very well with monostatic estimates for the majority of the time which, given the very different methods involved in each technique, gives us great confidence in our ability to measure F-region neutral wind gradients; 2) the strongest gradient was that which describes the magnetic meridional shear of the zonal wind, which is driven by momentum deposition from convecting ions; 3) vortical flow was more often observed than divergent flow, and both types of flow showed systematic variations with magnetic local time; 4) viscous heating due to non-negligible gradients was on the order of 10(-11) Wm(-3) which, while small compared to typical F-region Joule heating rates, may be comparable to particle heating, and in a time-integrated sense may be an appreciable source of heating.
C1 [Anderson, C.; Conde, M.] Univ Alaska, Inst Geophys, Fairbanks, AK USA.
   [McHarg, M. G.] USAF Acad, Dept Phys, Colorado Springs, CO 80840 USA.
RP Anderson, C (reprint author), Univ Alaska Fairbanks, Inst Geophys, Fairbanks, AK 99775 USA.
EM callum@gi.alaska.edu
NR 33
TC 4
Z9 4
U1 0
U2 3
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 MAY 10
PY 2012
VL 117
AR A05311
DI 10.1029/2011JA017471
PG 16
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 942BG
UT WOS:000304013900004
ER

PT J
AU Wang, Y
   Ruan, XL
   Roy, AK
AF Wang, Yan
   Ruan, Xiulin
   Roy, Ajit K.
TI Two-temperature nonequilibrium molecular dynamics simulation of thermal
   transport across metal-nonmetal interfaces
SO PHYSICAL REVIEW B
LA English
DT Article
ID DISPLACEMENT CASCADES; BOUNDARY RESISTANCE; CARBON NANOTUBE; MISMATCH
   MODEL; ELECTRON; CONDUCTANCE; COPPER; TEMPERATURES; SCATTERING;
   SUBSTRATE
AB We have used a two-temperature nonequilibrium molecular dynamics method for predicting interfacial thermal resistance across metal-nonmetal interfaces. This method is an extension of the conventional nonequilibrium molecular dynamics for the dielectric-dielectric interface, where a temperature bias is imposed and the heat current is derived. We have included the electron degree of freedom for the interfacial thermal transport problem by treating the electron-phonon coupling with the two-temperature model. The method is demonstrated on two model systems, that is, silicon-copper interface and carbon-nanotube-copper interface. Temperature nonequilibrium between electrons and phonons in the metal side is quantitatively predicted, and a temperature drop across the interface is observed. The results agree with experimental data better than those obtained from conventional nonequilibrium molecular dynamics simulations where only phonons are considered. Our approach is capable of taking into account both the electron and lattice degrees of freedom in a single molecular dynamics simulation and is a generally useful tool for modeling interfacial thermal transport across metal-nonmetal interfaces.
C1 [Wang, Yan; Ruan, Xiulin] Purdue Univ, Sch Mech Engn, W Lafayette, IN 47907 USA.
   [Wang, Yan; Ruan, Xiulin] Purdue Univ, Birck Nanotechnol Ctr, W Lafayette, IN 47907 USA.
   [Roy, Ajit K.] USAF, Mat & Mfg Directorate, Res Lab, Wright Patterson AFB, OH 45433 USA.
RP Wang, Y (reprint author), Purdue Univ, Sch Mech Engn, W Lafayette, IN 47907 USA.
EM ruan@purdue.edu
RI Ruan, Xiulin/C-6166-2009; Wang, Yan/F-4482-2012; Wang, Yan/A-1194-2015
OI Ruan, Xiulin/0000-0001-7611-7449; Wang, Yan/0000-0001-9474-6396
FU Air Force Office of Scientific Research (AFOSR); Graduate School and
   College of Engineering, Purdue University
FX The authors are grateful for support from the Air Force Office of
   Scientific Research (AFOSR). The authors acknowledge helpful suggestions
   from Bo Qiu to this work. Y.W. also acknowledges the support from the
   Graduate School and College of Engineering, Purdue University.
NR 58
TC 36
Z9 37
U1 7
U2 57
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 10
PY 2012
VL 85
IS 20
AR 205311
DI 10.1103/PhysRevB.85.205311
PG 9
WC Physics, Condensed Matter
SC Physics
GA 939ZH
UT WOS:000303859200005
ER

PT J
AU Kirk, MS
   Balasubramaniam, KS
   Jackiewicz, J
   McAteer, RTJ
   Milligan, RO
AF Kirk, Michael S.
   Balasubramaniam, K. S.
   Jackiewicz, Jason
   McAteer, R. T. James
   Milligan, Ryan O.
TI PROPERTIES OF SEQUENTIAL CHROMOSPHERIC BRIGHTENINGS AND ASSOCIATED FLARE
   RIBBONS
SO ASTROPHYSICAL JOURNAL
LA English
DT Article
DE Sun: chromosphere; Sun: flares
ID SOFT-X-RAY; SOLAR-FLARES; H-ALPHA; TEMPORAL CHARACTERISTICS;
   EVAPORATION; FIELD
AB We report on the physical properties of solar sequential chromospheric brightenings (SCBs) observed in conjunction with moderate-sized chromospheric flares with associated Coronal mass ejections. To characterize these ephemeral events, we developed automated procedures to identify and track subsections (kernels) of solar flares and associated SCBs using high-resolution Ha images. Following the algorithmic identification and a statistical analysis, we compare and find the following: SCBs are distinctly different from flare kernels in their temporal characteristics of intensity, Doppler structure, duration, and location properties. We demonstrate that flare ribbons are themselves made up of subsections exhibiting differing characteristics. Flare kernels are measured to have a mean propagation speed of 0.2 km s(-1) and a maximum speed of 2.3 km s(-1) over a mean distance of 5 x 10(3) km. Within the studied population of SCBs, different classes of characteristics are observed with coincident negative, positive, or both negative and positive Doppler shifts of a few km s-1. The appearance of SCBs precedes peak flare intensity by approximate to 12 minutes and decay approximate to 1 hr later. They are also found to propagate laterally away from flare center in clusters at 45 km s(-1) or 117 km s(-1). Given SCBs' distinctive nature compared to flares, we suggest a different physical mechanism relating to their origin than the associated flare. We present a heuristic model of the origin of SCBs.
C1 [Kirk, Michael S.; Balasubramaniam, K. S.; Jackiewicz, Jason; McAteer, R. T. James] New Mexico State Univ, Dept Astron, Las Cruces, NM 88003 USA.
   [Kirk, Michael S.; Balasubramaniam, K. S.] USAF, Space Vehicles Directorate, Res Lab, Kirtland AFB, NM 87114 USA.
   [Kirk, Michael S.; Balasubramaniam, K. S.] Natl Solar Observ, Sunspot, NM 88349 USA.
   [Milligan, Ryan O.] Queens Univ Belfast, Sch Math & Phys, Astrophys Res Ctr, Belfast BT7 1NN, Antrim, North Ireland.
RP Kirk, MS (reprint author), New Mexico State Univ, Dept Astron, POB 30001,MSC 4500, Las Cruces, NM 88003 USA.
EM mskirk@nmsu.edu
OI Balasubramaniam, Krishnan/0000-0003-2221-0933
FU USAF/AFRL [FA9453-11-1-0259]
FX The authors thank USAF/AFRL grant FA9453-11-1-0259; NSO/AURA for the use
   of their Sunspot, NM, facilities; AFRL/RVBXS; and Crocker and Weeks for
   making their algorithm available online.
NR 23
TC 5
Z9 5
U1 0
U2 4
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0004-637X
J9 ASTROPHYS J
JI Astrophys. J.
PD MAY 10
PY 2012
VL 750
IS 2
AR 145
DI 10.1088/0004-637X/750/2/145
PG 13
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 934LT
UT WOS:000303446500059
ER

PT J
AU Yang, C
   Kaspi, R
   Tilton, ML
   Chavez, JR
   Ongstad, AP
   Dente, GC
AF Yang, Chi
   Kaspi, Ron
   Tilton, Michael L.
   Chavez, Joseph R.
   Ongstad, Andrew P.
   Dente, Gregory C.
TI Spectrally narrow mid-infrared optically pumped lasers with partial
   surface DBR
SO OPTICS EXPRESS
LA English
DT Article
ID MU-M
AB An optically pumped mid-infrared edge-emitting laser is described, in which a Distributed Bragg Reflector grating partially occupies the surface, and provides spectral narrowing in a high power device. A quasi-continuous-wave power of 3 Watts is obtained at 3.6 mu m that is contained within a spectral width of 7 nm. (C) 2012 Optical Society of America
C1 [Yang, Chi; Kaspi, Ron; Ongstad, Andrew P.] USAF, Res Lab, Kirtland AFB, NM 87117 USA.
   [Tilton, Michael L.; Chavez, Joseph R.] Boeing Def & Space Grp, Albuquerque, NM 87106 USA.
   [Dente, Gregory C.] GCD Associates, Albuquerque, NM 87110 USA.
RP Yang, C (reprint author), USAF, Res Lab, 3550 Aberdeen Ave SE, Kirtland AFB, NM 87117 USA.
EM chi.yang@kirtland.af.mil
FU Air Force Office of Scientific Research
FX Dr. Yang is a National Research Council Research Associate at the Air
   Force Research Laboratory. The authors thank Xiang He at the University
   of New Mexico for helpful discussions. The authors are also grateful to
   the Air Force Office of Scientific Research for its support.
NR 11
TC 1
Z9 1
U1 1
U2 5
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 7
PY 2012
VL 20
IS 10
BP 10833
EP 10838
DI 10.1364/OE.20.010833
PG 6
WC Optics
SC Optics
GA 940HD
UT WOS:000303879700046
PM 22565707
ER

PT J
AU Ward, B
   Robin, C
   Dajani, I
AF Ward, B.
   Robin, C.
   Dajani, I.
TI Origin of thermal modal instabilities in large mode area fiber
   amplifiers
SO OPTICS EXPRESS
LA English
DT Article
ID PHOTONIC-CRYSTAL FIBER; IMPACT
AB We present a dynamic model of thermal modal instability in large mode area fiber amplifiers. This model allows the pump and signal optical intensity distributions to apply a time-varying heat load distribution within the fiber. This influences the temperature distribution that modifies the optical distributions through the thermo-optic effect thus creating a feedback loop that gives rise to time-dependent modal instability. We describe different regimes of operation for a representative fiber design. We find qualitative agreement between simulation results and experimental results obtained with a different fiber including the time-dependent behavior of the instability and the effects of different cooling configurations on the threshold. We describe the physical processes responsible for the onset of the instability and suggest possible mitigation approaches. (C) 2012 Optical Society of America
C1 [Ward, B.] USAF Acad, Laser & Opt Res Ctr, Usaf Acad, CO 80840 USA.
   [Robin, C.; Dajani, I.] USAF, Adv Elect Lasers Branch, Res Lab, Kirtland AFB, NM 87117 USA.
RP Ward, B (reprint author), USAF Acad, Laser & Opt Res Ctr, Suite 2A31,2354 Fairchild Dr, Usaf Acad, CO 80840 USA.
EM benjamin.ward.1@us.af.mil
FU High Energy Laser Joint Technology Office; Air Force Research
   Laboratory; Laser and Optics Research Center at the United States Air
   Force Academy; Air Force Research Laboratory DoD Supercomputing Resource
   Center, Wright-Patterson Air Force Base, OH
FX This work was supported in part by a grant of computer time from the DoD
   High Performance Computing Modernization Program at Air Force Research
   Laboratory DoD Supercomputing Resource Center, Wright-Patterson Air
   Force Base, OH. The authors gratefully acknowledge the High Energy Laser
   Joint Technology Office, the Air Force Research Laboratory and the Laser
   and Optics Research Center at the United States Air Force Academy for
   support. The views expressed in this article are those of the authors
   and do not reflect the official policy or position of the US government
   or the Department of Defense.
NR 12
TC 108
Z9 113
U1 1
U2 22
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 7
PY 2012
VL 20
IS 10
BP 11407
EP 11422
DI 10.1364/OE.20.011407
PG 16
WC Optics
SC Optics
GA 940HD
UT WOS:000303879700101
PM 22565761
ER

PT J
AU Liu, J
   Xue, YH
   Gao, YX
   Yu, DS
   Durstock, M
   Dai, LM
AF Liu, Jun
   Xue, Yuhua
   Gao, Yunxiang
   Yu, Dingshan
   Durstock, Michael
   Dai, Liming
TI Hole and Electron Extraction Layers Based on Graphene Oxide Derivatives
   for High-Performance Bulk Heterojunction Solar Cells
SO ADVANCED MATERIALS
LA English
DT Article
DE bulk heterojunction solar cells; graphene oxides; charge extraction;
   cesium; functionalization
ID POLYMER PHOTOVOLTAIC CELLS; DEVICES; FILMS; SHEETS; CARBON; DONOR
C1 [Liu, Jun; Xue, Yuhua; Gao, Yunxiang; Yu, Dingshan; Dai, Liming] Case Western Reserve Univ, Case Sch Engn, Dept Macromol Sci & Engn, Ctr Adv Sci & Engn Carbon Case4Carbon, Cleveland, OH 44106 USA.
   [Xue, Yuhua] Wenzhou Med Coll, Sch Ophthalmol & Optometry, Inst Adv Mat Nanobio Applicat, Zhejiang 325027, Peoples R China.
   [Durstock, Michael] USAF, Res Lab, RXBP, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA.
RP Dai, LM (reprint author), Case Western Reserve Univ, Case Sch Engn, Dept Macromol Sci & Engn, Ctr Adv Sci & Engn Carbon Case4Carbon, 10900 Euclid Ave, Cleveland, OH 44106 USA.
EM liming.dai@case.edu
RI Yu, Dingshan/C-8881-2014; 
OI Yu, Dingshan/0000-0002-7650-5131; Gao, Yunxiang/0000-0002-3522-5838; Yu,
   Dingshan/0000-0002-2913-2432
FU AFOSR under the Polymer Chemistry Task in the Directorate of Chemistry
   and Life Sciences; Wenzhou Medical College; Zhejiang Department of
   Science and Technology [2009C13019]; Ministry of Science and Technology
   of China [2009DFB30380];  [NSF-DMR-1106160]
FX The authors are very grateful for the financial support from AFOSR under
   the Polymer Chemistry Task in the Directorate of Chemistry and Life
   Sciences (Dr. Charles Lee-program Manager). Partial support from
   NSF-DMR-1106160, Wenzhou Medical College, the Zhejiang Department of
   Science and Technology (2009C13019), and the Ministry of Science and
   Technology of China (2009DFB30380) is also acknowledged.
NR 40
TC 145
Z9 148
U1 11
U2 161
PU WILEY-V C H VERLAG GMBH
PI WEINHEIM
PA PO BOX 10 11 61, D-69451 WEINHEIM, GERMANY
SN 0935-9648
J9 ADV MATER
JI Adv. Mater.
PD MAY 2
PY 2012
VL 24
IS 17
BP 2228
EP 2233
DI 10.1002/adma.201104945
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 930DR
UT WOS:000303117900001
PM 22488820
ER

PT J
AU Leahy, GD
   Crowder, TA
   Mayhew, JL
AF Leahy, Guy D.
   Crowder, Todd A.
   Mayhew, Jerry L.
TI Allometric Scaling Of Air Force Fitness Test Performances In Men
SO MEDICINE AND SCIENCE IN SPORTS AND EXERCISE
LA English
DT Meeting Abstract
C1 [Leahy, Guy D.] Davis Monthan AFB, Tucson, AZ USA.
   [Crowder, Todd A.] US Mil Acad, West Point, NY 10996 USA.
   [Mayhew, Jerry L.] Truman State Univ, Kirksville, MO USA.
NR 0
TC 0
Z9 0
U1 0
U2 1
PU LIPPINCOTT WILLIAMS & WILKINS
PI PHILADELPHIA
PA 530 WALNUT ST, PHILADELPHIA, PA 19106-3621 USA
SN 0195-9131
J9 MED SCI SPORT EXER
JI Med. Sci. Sports Exerc.
PD MAY
PY 2012
VL 44
SU 2
BP 205
EP 205
PG 1
WC Sport Sciences
SC Sport Sciences
GA 027OT
UT WOS:000310363301202
ER

PT J
AU Kobermann, AM
   Mayhew, JL
   Leahy, GD
   Crowder, T
AF Kobermann, Andrea M.
   Mayhew, Jerry L.
   Leahy, Guy D.
   Crowder, Todd
TI Relationship of Body Mass to Army Physical Fitness Test Performance in
   College ROTC Cadets
SO MEDICINE AND SCIENCE IN SPORTS AND EXERCISE
LA English
DT Meeting Abstract
C1 [Kobermann, Andrea M.; Mayhew, Jerry L.] Truman State Univ, Kirksville, MO USA.
   [Leahy, Guy D.] Davis Monthan AFB, Tucson, AZ USA.
   [Crowder, Todd] US Mil Acad, West Point, NY 10996 USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU LIPPINCOTT WILLIAMS & WILKINS
PI PHILADELPHIA
PA 530 WALNUT ST, PHILADELPHIA, PA 19106-3621 USA
SN 0195-9131
J9 MED SCI SPORT EXER
JI Med. Sci. Sports Exerc.
PD MAY
PY 2012
VL 44
SU 2
BP 927
EP 927
PG 1
WC Sport Sciences
SC Sport Sciences
GA 027OT
UT WOS:000310363304675
ER

PT J
AU Gudimetla, VSR
   Holmes, RB
   Smith, C
   Needham, G
AF Gudimetla, V. S. Rao
   Holmes, Richard B.
   Smith, Carey
   Needham, Gregory
TI Analytical expressions for the log-amplitude correlation function of a
   plane wave through anisotropic atmospheric refractive turbulence
SO JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND
   VISION
LA English
DT Article
ID LOW-FREQUENCY RANGE; RANDOM-MEDIA; PROPAGATION; SPECTRUM; SCINTILLATION;
   FLUCTUATIONS; STATISTICS; SIMULATION
AB The effect of anisotropic Kolmogorov turbulence on the log-amplitude correlation function for plane-wave fields is investigated using analysis, numerical integration, and simulation. A new analytical expression for the log-amplitude correlation function is derived for anisotropic Kolmogorov turbulence. The analytic results, based on the Rytov approximation, agree well with a more general wave-optics simulation based on the Fresnel approximation as well as with numerical evaluations, for low and moderate strengths of turbulence. The new expression reduces correctly to previously published analytic expressions for isotropic turbulence. The final results indicate that, as asymmetry becomes greater, the Rytov variance deviates from that given by the standard formula. This deviation becomes greater with stronger turbulence, up to moderate turbulence strengths. The anisotropic effects on the log-amplitude correlation function are dominant when the separation of the points is within the Fresnel length. In the direction of stronger turbulence, there is an enhanced dip in the correlation function at a separation close to the Fresnel length. The dip is diminished in the weak-turbulence axis, suggesting that energy redistribution via focusing and defocusing is dominated by the strong-turbulence axis. The new analytical expression is useful when anisotropy is observed in relevant experiments. (C) 2012 Optical Society of America
C1 [Gudimetla, V. S. Rao] USAF, Res Lab, Directed Energy Directorate, Kihei, HI 96753 USA.
   [Holmes, Richard B.; Smith, Carey; Needham, Gregory] Boeing LTS Maui, Kihei, HI 96753 USA.
RP Gudimetla, VSR (reprint author), USAF, Res Lab, Directed Energy Directorate, Detachment 15,535 Lipoa Pkwy,200, Kihei, HI 96753 USA.
FU Laboratory Research Initiation Request by Air Force Office of Scientific
   Research (AFOSR)
FX The authors thank Jacob Lucas (Boeing LTS, Maui Island) for help with
   the simulations. This work was funded as a Laboratory Research
   Initiation Request by Air Force Office of Scientific Research (AFOSR) to
   Rao Gudimetla as principal investigator. The views expressed in this
   paper are those of the authors and do not necessarily represent the
   views of the Department of Defense or its components. Use of Maui High
   Performance Computer Center resources is gratefully acknowledged.
NR 26
TC 12
Z9 12
U1 0
U2 4
PU OPTICAL SOC AMER
PI WASHINGTON
PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA
SN 1084-7529
EI 1520-8532
J9 J OPT SOC AM A
JI J. Opt. Soc. Am. A-Opt. Image Sci. Vis.
PD MAY
PY 2012
VL 29
IS 5
BP 832
EP 841
PG 10
WC Optics
SC Optics
GA 016UK
UT WOS:000309544800021
PM 22561942
ER

PT J
AU Berger, M
   Silva, CT
AF Berger, Matthew
   Silva, Claudio T.
TI Medial Kernels
SO COMPUTER GRAPHICS FORUM
LA English
DT Article
ID SURFACE RECONSTRUCTION; PARTITION
AB We introduce the medial kernel, an association measure which provides for a robust construction of volume-aware distances defined directly on point clouds. The medial kernel is a similarity measure defined as the likelihood of two points belonging to a common interior medial ball. We use the medial kernel to construct a random walk on the point cloud, where movement in the walk is restricted to regions containing similar medial balls. Our distances are defined as the diffusion distances of this random walk, assigning low distance to points belonging to similar medial regions. These distances allow for a robust means of processing incomplete point clouds, capable of distinguishing nearby yet separate undersampled components, while also associating points which are far in Euclidean distance yet mutually share an interior volume. We leverage these distances for several applications: volumetric part segmentation, the construction of function bases, and reconstruction-by-parts - a surface reconstruction method which adheres to the medial kernel.
C1 [Berger, Matthew] Univ Utah, Salt Lake City, UT 84112 USA.
   [Berger, Matthew] USAF, Res Lab, Informat Directorate, Wright Patterson AFB, OH USA.
   [Silva, Claudio T.] NYU, Polytech Inst, New York, NY 10003 USA.
RP Berger, M (reprint author), Univ Utah, Salt Lake City, UT 84112 USA.
FU National Science Foundation; Department of Energy Office of Science
FX We thank Justin Solomon for the KVF comparison and Shy Shalom for the
   Mannequin point cloud. This work was partially funded by the National
   Science Foundation and the Department of Energy Office of Science.
NR 29
TC 4
Z9 4
U1 0
U2 2
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 0167-7055
J9 COMPUT GRAPH FORUM
JI Comput. Graph. Forum
PD MAY
PY 2012
VL 31
IS 2
BP 795
EP 804
DI 10.1111/j.1467-8659.2012.03060.x
PN 4
PG 10
WC Computer Science, Software Engineering
SC Computer Science
GA 971CY
UT WOS:000306182500007
ER

PT J
AU Agte, JS
   Borer, NK
   de Weck, O
AF Agte, Jeremy S.
   Borer, Nicholas K.
   de Weck, Olivier
TI Multistate Design Approach to Analysis of Twin-Engine Aircraft
   Performance Robustness
SO JOURNAL OF AIRCRAFT
LA English
DT Article; Proceedings Paper
CT 51st AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and
   Materials Conference / 11th AIAA Gossamer Systems Forum
CY APR 10-15, 2010
CL Orlando, FL
SP AIAA, AHS, ASME, ASC, ASCE, US Off Naval Res, US AF Off Sci Res
ID SYSTEM
AB This article introduces an integrated approach for the early-stage multistate design and analysis of aircraft requiring robust performance across a range of off-nominal system states. It is applied to the case study of an existing twin-engine aircraft, enabled by the development of a multimodal performance model calibrated with flight-test data collected at Edwards Air Force Base Flight Test Center. The methodology includes elements for determining responses in aircraft expected performance and availability to changes in static design variables (geometry), dynamic design variables (control gains), and component failure rates, which are the three driving input categories affecting performance robustness. This is accomplished using Markov chain analysis within the design loop to stochastically model state transitions based on failure rates as well as gain optimization through simulation to ensure controllability at each design point. Results showed unsafe performance in 15% of the King Air geometry-state responses under investigation. Although many occurred in the fully failed state and were expected, five occurred in partially degraded states where the majority of geometries were able to meet performance requirements. Furthermore, this behavior clearly exhibited itself in the resulting design sensitivities, confirming that such an approach allows designers to identify elements that might drive system loss through analysis of performance changes across system states and their respective response to changes in design variables.
C1 [Agte, Jeremy S.; Borer, Nicholas K.] Charles Stark Draper Lab Inc, Cambridge, MA 02139 USA.
   [Agte, Jeremy S.] USAF, Colorado Springs, CO USA.
   [de Weck, Olivier] MIT, Dept Aeronaut & Astronaut, Cambridge, MA 02139 USA.
RP Agte, JS (reprint author), Charles Stark Draper Lab Inc, 555 Technol Sq,MS 27, Cambridge, MA 02139 USA.
NR 44
TC 2
Z9 2
U1 0
U2 0
PU AMER INST AERONAUTICS  ASTRONAUTICS
PI RESTON
PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091-4344 USA
SN 0021-8669
EI 1533-3868
J9 J AIRCRAFT
JI J. Aircr.
PD MAY-JUN
PY 2012
VL 49
IS 3
BP 781
EP 793
DI 10.2514/1.C031338
PG 13
WC Engineering, Aerospace
SC Engineering
GA 957MV
UT WOS:000305168000010
ER

PT J
AU Reynolds, T
   Reeder, MF
AF Reynolds, T.
   Reeder, M. F.
TI Effect of Aspect Ratio on Flow Through Serpentine Nozzles
SO JOURNAL OF AIRCRAFT
LA English
DT Article
ID DUCT; CHANNELS; JETS
AB The flowfields for two rectangular cross-sectional nozzles with two in-plane 90 deg bends were investigated both experimentally and computationally. The cross-sectional planform of the two nozzles were of opposite aspect ratios (2:1 and 1:2). The Reynolds number (based upon the hydraulic diameter and mean velocity within the nozzle) was 1.4 x 10(4), providing a Dean number of 8400 (based upon radius of curvature at the centerline of the nozzle). The experimental portion of the study was conducted by three-component laser Doppler velocimetry using a five-beam probe. A computational study was performed on the interior of the nozzle using a commercial code that employed a Reynolds stress model. With noted exceptions, good correlation was observed between the computational and experimental solutions. Secondary-flow velocities at the nozzle exit revealed evidence of a complex pattern of streamwise vortices generated by the two bends. It was found that despite the common Dean number, the difference in aspect ratio led to substantially different velocity fields. The flow was dominated by a single pair of counter-rotating streamwise vortices in one case, whereas its counterpart yielded a complex pattern of multiple smaller vortices.
C1 [Reynolds, T.; Reeder, M. F.] USAF, Inst Technol, Dept Aeronaut & Astronaut, Wright Patterson AFB, OH 45433 USA.
RP Reynolds, T (reprint author), USAF, Inst Technol, Dept Aeronaut & Astronaut, Wright Patterson AFB, OH 45433 USA.
NR 18
TC 0
Z9 0
U1 4
U2 9
PU AMER INST AERONAUT ASTRONAUT
PI RESTON
PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091-4344 USA
SN 0021-8669
J9 J AIRCRAFT
JI J. Aircr.
PD MAY-JUN
PY 2012
VL 49
IS 3
BP 836
EP 851
DI 10.2514/1.C031444
PG 16
WC Engineering, Aerospace
SC Engineering
GA 957MV
UT WOS:000305168000015
ER

PT J
AU Avalos, J
   Swenson, ED
   Mignolet, MP
   Lindsley, NJ
AF Avalos, Javier
   Swenson, Eric D.
   Mignolet, Marc P.
   Lindsley, Ned J.
TI Stochastic Modeling of Structural Uncertainty/Variability from Ground
   Vibration Modal Test Data
SO JOURNAL OF AIRCRAFT
LA English
DT Article; Proceedings Paper
CT 52nd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and
   Materials Conference/19th AIAA/ASME/AHS Adaptive Structures Conference
CY APR 04-07, 2011
CL Denver, CO
SP AIAA, ASME, ASCE, AHS, ASC
ID EXPERIMENTAL IDENTIFICATION; UNCERTAINTIES; VALIDATION; DYNAMICS;
   SYSTEMS; LOADS
AB The focus of this investigation is on the formulation and validation of a methodology for the estimation of a stochastic linear modal model of a structure from measurements of a few of its natural frequencies and mode shapes on a few nominally identical samples of the structure. The basis for the modal model is composed of the modes of an approximate representation of the structure, e.g., a nonupdated or preliminary finite element model. Furthermore, the variability or uncertainty in the structure is assumed to originate from stiffness properties (e.g., Young's modulus, boundary conditions, attachment conditions) so that the mass matrix of the uncertain linear modal model is identity but the corresponding stiffness matrix is random. The nonparametric stochastic modeling approach is adopted here for the representation of this latter matrix; thus, the quantities to be estimated are the mean stiffness matrix and the uncertainty level. This effort is accomplished using the maximum likelihood framework using both natural frequencies and mode shapes data. The successful application of this approach to data from the Air Force Institute of Technology joined wing is demonstrated.
C1 [Avalos, Javier; Mignolet, Marc P.] Arizona State Univ, Fac Mech Engn, SEMTE, Tempe, AZ 85287 USA.
   [Avalos, Javier; Mignolet, Marc P.] Arizona State Univ, Fac Aerosp Engn, SEMTE, Tempe, AZ 85287 USA.
   [Swenson, Eric D.] USAF, Inst Technol, Dept Aeronaut & Astronaut, Wright Patterson AFB, OH 45433 USA.
   [Lindsley, Ned J.] USAF, Res Lab, AFRL VASD, Wright Patterson AFB, OH 45433 USA.
RP Avalos, J (reprint author), Arizona State Univ, Fac Mech Engn, SEMTE, Tempe, AZ 85287 USA.
NR 25
TC 6
Z9 6
U1 1
U2 9
PU AMER INST AERONAUT ASTRONAUT
PI RESTON
PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091-4344 USA
SN 0021-8669
J9 J AIRCRAFT
JI J. Aircr.
PD MAY-JUN
PY 2012
VL 49
IS 3
BP 870
EP 884
DI 10.2514/1.C031546
PG 15
WC Engineering, Aerospace
SC Engineering
GA 957MV
UT WOS:000305168000018
ER

PT J
AU Atkinson, M
   Poggie, J
   Camberos, J
AF Atkinson, Michael
   Poggie, Jonathan
   Camberos, Jose
TI Hypersonic Flow Computations for an Elliptic Cone at High Angle of
   Incidence
SO JOURNAL OF SPACECRAFT AND ROCKETS
LA English
DT Article; Proceedings Paper
CT 47th AIAA Aerospace Sciences Meeting and Exhibit including the New
   Horizons Forum and Aerospace Exposition
CY JAN 05-08, 2009
CL Orlando, FL
SP Amer Inst Aeronaut & Astronaut (AIAA)
ID NAVIER-STOKES EQUATIONS; LINE RELAXATION; ATTACK; NONEQUILIBRIUM
AB A numerical investigation was conducted of a blunt-nosed elliptic cone in hypersonic, laminar flow. The geometry and test conditions were selected for comparison with experiments: a 2:1 blunt elliptic cone at a Mach number of 14.5, Reynolds number based on length of 36,000, and angles of attack ranging from 0 to 60 deg. Nonequilibrium flow calculations were carried out using an unstructured-grid Navier-Stokes code. The computations generally captured the trends in the experimental data, but tended to overestimate the magnitude of the wall pressure by 5-25% and the heat flux by 25-35%. The computations showed the largest overprediction on the windward side and leading edge and the smallest overprediction on the leeward side. Detailed examination of the leeward-side flow structure showed massive leeward-side separation with detached vortices. Primary/secondary vortices and embedded shock waves appeared above an angle of attack of 30 deg. Corresponding minima were observed in the surface pressure and heat flux on the leeward side of the cone.
C1 [Atkinson, Michael; Poggie, Jonathan] USAF, Res Lab, High Speed Flow Res Team, Wright Patterson AFB, OH 45433 USA.
   [Camberos, Jose] USAF, Res Lab, Prototype Design Explorat Multidisciplinary Sci &, Wright Patterson AFB, OH 45433 USA.
RP Atkinson, M (reprint author), USAF, Res Lab, High Speed Flow Res Team, Wright Patterson AFB, OH 45433 USA.
NR 40
TC 1
Z9 1
U1 1
U2 5
PU AMER INST AERONAUTICS  ASTRONAUTICS
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 2012
VL 49
IS 3
BP 496
EP 506
DI 10.2514/1.A32062
PG 11
WC Engineering, Aerospace
SC Engineering
GA 957XF
UT WOS:000305199700007
ER

PT J
AU Goodson, MS
   Lynch, JA
   Lamkin, T
   Kramer, R
AF Goodson, Michael S.
   Lynch, John A.
   Lamkin, Thomas
   Kramer, Ryan
TI Elucidation of Small RNAs That Activate Transcription in Bacteria
SO ACS SYNTHETIC BIOLOGY
LA English
DT Article
DE small non-coding RNAs; transcriptional activation; bacteria; signal
   amplification; synthetic control
ID GENE-EXPRESSION; APTAMER
AB Small non-coding RNA (sRNA) control of gene expression has been shown to play a prominent role in genetic regulation. While the majority of identified bacterial sRNAs exert their control at the translational level, a few examples of bacterial sRNAs that inhibit transcription have also been identified. Using an engineered combinatorial RNA library, we have elucidated bacterial sRNAs that activate transcription of a target gene in E. coli to varying degrees. Mutation of the strongest activator modified its activation potential. Our results suggest that transcriptional activation of our target gene results from recruitment of the bacterial RNA polymerase complex to the promoter region. These data, coupled with the malleability of RNA, provide a context to define synthetic control of genes in bacteria at the transcriptional level.
C1 [Lamkin, Thomas; Kramer, Ryan] Univ Cincinnati, USAF, Res Lab, Cincinnati, OH 45221 USA.
   [Goodson, Michael S.] USAF, Res Lab, Wright Patterson AFB, OH 45433 USA.
   [Lynch, John A.] Univ Cincinnati, Dept Chem, Cincinnati, OH 45267 USA.
RP Kramer, R (reprint author), Univ Cincinnati, USAF, Res Lab, 711th Human Performance Wing,231 Albert Sabin Way, Cincinnati, OH 45221 USA.
EM ryan.kramer@wpafb.af.mil
FU Bio-X STT, Air Force Research Laboratory
FX We thank Dr. K. Greis at the University of Cincinnati Cancer and Cell
   Biology Proteomics Core Facility and Dr. N. Kelley-Loughnane, M.
   Davidson, A. Stapleton, G. Sudberry, and J. Wright at 711th Human
   Performance Wing for their assistance. This work is funded by the Bio-X
   STT, Air Force Research Laboratory.
NR 27
TC 1
Z9 1
U1 1
U2 6
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 2161-5063
J9 ACS SYNTH BIOL
JI ACS Synth. Biol.
PD MAY
PY 2012
VL 1
IS 5
BP 181
EP 189
DI 10.1021/sb2000275
PG 9
WC Biochemical Research Methods
SC Biochemistry & Molecular Biology
GA 961SU
UT WOS:000305490300005
PM 23651156
ER

PT J
AU Cheng, TS
   March, SR
   Pitz, RW
   Wehrmeyer, JA
   Chen, JY
AF Cheng, T. S.
   March, S. R.
   Pitz, R. W.
   Wehrmeyer, J. A.
   Chen, J. -Y.
TI Laser raman measurements of temperature and species concentration in
   swirling lifted hydrogen jet diffusion flames
SO INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
LA English
DT Article
DE Swirling lifted hydrogen flame; Raman scattering; Laser-induced
   predissociative fluorescence; Opposed flow laminar flame calculations
ID TURBULENCE-CHEMISTRY INTERACTIONS; TURBINE MODEL COMBUSTOR;
   COMPOSITIONAL STRUCTURE; NONPREMIXED FLAMES; FLOW-FIELD; DISTRIBUTIONS;
   NOX; RECIRCULATION; EMISSION; METHANE
AB Simultaneous spatially and temporally resolved point measurements of temperature, mixture fraction, major species (H-2, H2O, O-2, N-2), and minor species (OH) concentrations are performed in unswirled (S-g = 0), low swirl (S-g = 0.12), and high swirl (S-g = 0.5) lifted turbulent hydrogen jet diffusion flames into still air. Ultraviolet (UV) Raman scattering and laser-induced predissociative fluorescence (LIPF) techniques are combined to make the multi-parameter measurements using a single KrF excimer laser. Experimental results are compared to the fast chemistry (equilibrium) limit, to the mixing without reaction limit, and to simulations of steady stretched laminar opposed-flow flames. It is found that in the lifted region where the swirling effects are strong, the measured chemical compositions are inconsistent with those calculated from stretched laminar diffusion flames or stretched partially premixed flames. Sub-equilibrium values of temperature, sub-flamelet values of H2O, and super-flamelet values of OH are found in an intermittent annular turbulent brush of the swirled flame but not in the unswirled flame. Farther downstream of the nozzle exit (x/D >= 50), swirl has little effect on the finite-rate chemistry. Copyright (C) 2012, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
C1 [Cheng, T. S.] Chung Hua Univ, Dept Mech Engn, Hsinchu 300, Taiwan.
   [March, S. R.] Landis Gyr AG, Corp Commun Dept, New York, NY 10022 USA.
   [Pitz, R. W.] Vanderbilt Univ, Dept Mech Engn, Nashville, TN 37235 USA.
   [Wehrmeyer, J. A.] Aerosp Testing Alliance, Arnold AFB, TN 37389 USA.
   [Chen, J. -Y.] Univ Calif Berkeley, Dept Mech Engn, Berkeley, CA 94720 USA.
RP Cheng, TS (reprint author), Chung Hua Univ, Dept Mech Engn, 707,Sec 2,Wufu Rd, Hsinchu 300, Taiwan.
EM tscheng@chu.edu.tw
RI Pitz, Robert/H-7868-2016
OI Pitz, Robert/0000-0001-6435-5618
FU Vanderbilt University through NASA [NGT-50263/NAG-1-770]; NSF
   [CTS-8657130/CBET-1134268]; National Science Council of the Republic of
   China [NSC 96-2221-E-216-0016-MY3]
FX The experimental work was made at Vanderbilt University through NASA
   Grants NGT-50263/NAG-1-770 and NSF Grants CTS-8657130/CBET-1134268
   (RWP). The present work is partially supported by the National Science
   Council of the Republic of China under Grant NSC 96-2221-E-216-0016-MY3
   (TSC).
NR 37
TC 1
Z9 1
U1 2
U2 17
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0360-3199
J9 INT J HYDROGEN ENERG
JI Int. J. Hydrog. Energy
PD MAY
PY 2012
VL 37
IS 9
BP 7900
EP 7911
DI 10.1016/j.ijhydene.2012.02.018
PG 12
WC Chemistry, Physical; Electrochemistry; Energy & Fuels
SC Chemistry; Electrochemistry; Energy & Fuels
GA 955SC
UT WOS:000305040200060
ER

PT J
AU Schumaker, SA
   Driscoll, JF
AF Schumaker, S. Alexander
   Driscoll, James F.
TI Mixing properties of coaxial jets with large velocity ratios and large
   inverse density ratios
SO PHYSICS OF FLUIDS
LA English
DT Article
DE flow visualisation; fluctuations; jets; mixing; rocket engines;
   stoichiometry
ID LASER-INDUCED FLUORESCENCE; FIELD FLOW STRUCTURE; NEAR-FIELD; DIFFUSION
   FLAMES; SHEAR-LAYER; ACETONE; SIMULATION; PRESSURES; REGION; NOISE
AB An experimental study was conducted to better understand the mixing properties of coaxial jets as several parameters were systematically varied, including the velocity ratio, density ratio, and the Reynolds number. Diameters of the inner and outer jet were also varied. Coaxial jets are commonly used to mix fluids due to the simplicity of their geometry and the rapid mixing that they provide. A measure of the overall mixing efficiency is the stoichiometric mixing length (L-s), which is the distance along the jet centerline where the two fluids have mixed to some desired concentration, which was selected to be the stoichiometric concentration for H-2/O-2 and CH4/O-2 in this case. For 56 cases, the profiles of mean mixture fraction, rms mixture fraction fluctuations (unmixedness), and L-s were measured using acetone planar laser induced fluorescence diagnostics. Results were compared to three mixing models. The entrainment model of Villermaux and Rehab showed good agreement with the data, indicating that the proper non-dimensional scaling parameter is the momentum flux ratio M. The work extends the existing database of coaxial jet scalar mixing properties because it considers the specific regime of large values of both the velocity ratio and the inverse density ratio, which is the regime in which rocket injectors operate. Also the work focuses on the mixing up to L-s where previous work focused on the mixing up to the end of the inner core. The Reynolds numbers achieved for a number of cases were considerably larger than previous gas mixing studies, which insures that the jet exit boundary conditions are fully turbulent. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4711396]
C1 [Schumaker, S. Alexander; Driscoll, James F.] Univ Michigan, Dept Aerosp Engn, Ann Arbor, MI 48109 USA.
RP Schumaker, SA (reprint author), USAF, Res Lab, Edwards AFB, CA USA.
EM stephen.schumaker@edwards.af.mil
FU Space Vehicle Technology Institute; National Aeronautics and Space
   Administration (NASA) [NCC3-989]; U.S. Air Force
FX This work was supported by the Space Vehicle Technology Institute within
   the Constellation University Institutes Project. It was jointly funded
   by National Aeronautics and Space Administration (NASA) (Grant No.
   NCC3-989) and the U.S. Air Force. Claudia Meyer was the project manager.
NR 40
TC 6
Z9 6
U1 0
U2 18
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 MAY
PY 2012
VL 24
IS 5
AR 055101
DI 10.1063/1.4711396
PG 21
WC Mechanics; Physics, Fluids & Plasmas
SC Mechanics; Physics
GA 952WR
UT WOS:000304826100027
ER

PT J
AU Shade, PA
   Kim, SL
   Wheeler, R
   Uchic, MD
AF Shade, Paul A.
   Kim, Sang-Lan
   Wheeler, Robert
   Uchic, Michael D.
TI Stencil mask methodology for the parallelized production of microscale
   mechanical test samples
SO REVIEW OF SCIENTIFIC INSTRUMENTS
LA English
DT Article
ID CRYSTAL PLASTICITY; STRENGTH
AB A new methodology to parallelize the production of micromechanical test samples from bulk materials is reported. This methodology has been developed to produce samples with typical gage dimensions on the order of 20-200 mu m, and also to minimize the reliance on conventional focused ion beam fabrication methods. The fabrication technique uses standard microelectronic process methods such as photolithography and deep-reactive ion etching to create high aspect ratio patterned templates-stencil masks-from a silicon wafer. In the present work, the stencil mask pattern consists of a linear row of tensile samples, where one grip of each sample is integrally attached to the bulk substrate. Once fabricated, the stencil mask is placed on top of a pre-thinned substrate, and the pattern and substrate are co-sputtered using a broad ion beam milling system, which ultimately results in the transfer of the mask pattern into the substrate. The methodology is demonstrated using a Si stencil mask and a polycrystalline Ni foil to manufacture an array of metallic micro-tensile samples. [http://dx.doi.org/10.1063/1.4720944]
C1 [Shade, Paul A.; Uchic, Michael D.] USAF, Res Lab, Mat & Mfg Directorate, AFRL RXLM, Wright Patterson AFB, OH 45433 USA.
   [Kim, Sang-Lan; Wheeler, Robert] UES Inc, Dayton, OH 45432 USA.
RP Shade, PA (reprint author), USAF, Res Lab, Mat & Mfg Directorate, AFRL RXLM, Wright Patterson AFB, OH 45433 USA.
RI Shade, Paul/H-6459-2011
FU (U.S.) Air Force Office of Scientific Research (USAFOSR); Materials &
   Manufacturing Directorate of the Air Force Research Laboratory
   [FA8650-07-D-5800, FA8650-04-D-5235, FA8650-03-D-5206]
FX The authors acknowledge support from the (U.S.) Air Force Office of
   Scientific Research (USAFOSR) (program managers Dr. Joan Fuller and Dr.
   Ali Sayir) and the Materials & Manufacturing Directorate of the Air
   Force Research Laboratory under Contract Nos. FA8650-07-D-5800,
   FA8650-04-D-5235, and FA8650-03-D-5206.
NR 20
TC 10
Z9 10
U1 0
U2 14
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
   MELVILLE, NY 11747-4501 USA
SN 0034-6748
J9 REV SCI INSTRUM
JI Rev. Sci. Instrum.
PD MAY
PY 2012
VL 83
IS 5
AR 053903
DI 10.1063/1.4720944
PG 6
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA 952VM
UT WOS:000304821500035
PM 22667629
ER

PT J
AU Rohrer, JW
   Dion, GR
   Brenner, PS
   Abadie, WM
   McMains, KC
   Thomas, RF
   Weitzel, EK
AF Rohrer, Joseph W.
   Dion, Greg R.
   Brenner, Pryor S.
   Abadie, Wesley M.
   McMains, Kevin C.
   Thomas, Roy F.
   Weitzel, Erik K.
TI Surfactant improves irrigant penetration into unoperated sinuses
SO AMERICAN JOURNAL OF RHINOLOGY & ALLERGY
LA English
DT Article
ID RHINOSINUSITIS; IRRIGATIONS
AB Background: Saline irrigations are proving to be a valuable intervention in the treatment of chronic sinusitis. The use of surfactants is a well established additive to topical treatments known to reduce surface tension and may prove to be a simple, nonoperative intervention to improve intrasinus douching penetration.
   Methods: Six 30-mL, flat-bottomed medicine cups with circular holes cut through the bottom center and varying in diameter from 1 to 6 mm were created with punch biopsies. Water, saline, saline/dye, and saline/dye/surfactant were compared for maximum holding pressure via these modeled ostia. Holding pressures also were determined for cups with septal mucosa fused to the bottom with holes ranging from 1 to 6 mm. In addition, analysis was carried out with blood and blood/surfactant. Finally, five thawed, fresh-frozen cadaver heads were evaluated before any sinus surgery with water/dye and water/dye/surfactant for intrasinus penetration.
   Results: Surfactant significantly improved the ability of all solutions to penetrate ostia in both the plastic cup and fused septal mucosa model. All nonsurfactant-containing solutions were not statistically different from one another, nor did surfactant change the ostial penetration of blood. Surfactant significantly improved the ability of sinus irrigant to penetrate unoperated sinus cavities (3.12 vs 3.5, p = .021).
   Conclusions: The addition of surfactant to saline irrigation improves ostial penetration in undissected and undiseased cadavers. This has practical implications for unoperated patients seeking care for sinus-related symptoms in that we have now described a method for improving topical treatment of target sinus mucosa prior to surgical intervention. (Am J Rhinol Allergy 26, 197-200, 2012; doi: 10.2500/ajra.2012.26.3761)
C1 [Rohrer, Joseph W.; Dion, Greg R.; Brenner, Pryor S.; Abadie, Wesley M.; McMains, Kevin C.; Thomas, Roy F.; Weitzel, Erik K.] Wilford Hall USAF Med Ctr, Dept Otolaryngol Head & Neck Surg, Lackland AFB, TX 78236 USA.
RP Weitzel, EK (reprint author), Wilford Hall USAF Med Ctr, Dept Otolaryngol Head & Neck Surg, Lackland AFB, TX 78236 USA.
EM erik.weitzel@yahoo.com
OI Weitzel, Erik/0000-0001-9155-3556
NR 10
TC 4
Z9 4
U1 0
U2 0
PU OCEAN SIDE PUBLICATIONS INC
PI PROVIDENCE
PA 95 PITMAN ST, PROVIDENCE, RI 02906 USA
SN 1945-8924
J9 AM J RHINOL ALLERGY
JI Am. J. Rhinol. Allergy
PD MAY-JUN
PY 2012
VL 26
IS 3
BP 197
EP 200
DI 10.2500/ajra.2012.26.3761
PG 4
WC Otorhinolaryngology
SC Otorhinolaryngology
GA 955AF
UT WOS:000304988800013
PM 22643945
ER

PT J
AU Reichenstein, W
   Horan, SM
   Jennings, WW
AF Reichenstein, William
   Horan, Stephen M.
   Jennings, William W.
TI "Two Key Concepts for Wealth Management and Beyond": Author Response
SO FINANCIAL ANALYSTS JOURNAL
LA English
DT Letter
C1 [Reichenstein, William] Baylor Univ, Waco, TX 76798 USA.
   [Horan, Stephen M.] CFA Inst, Charlottesville, VA USA.
   [Jennings, William W.] USAF Acad, Colorado Springs, CO 80840 USA.
RP Reichenstein, W (reprint author), Baylor Univ, Waco, TX 76798 USA.
NR 1
TC 0
Z9 0
U1 0
U2 1
PU CFA INST
PI CHARLOTTESVILLE
PA 560 RAY C HUNT DR, PO BOX 3668, CHARLOTTESVILLE, VA 22903 USA
SN 0015-198X
J9 FINANC ANAL J
JI Financ. Anal. J.
PD MAY-JUN
PY 2012
VL 68
IS 3
BP 14
EP 14
PG 1
WC Business, Finance
SC Business & Economics
GA 950YY
UT WOS:000304689000006
ER

PT J
AU Blunck, DL
   Kiel, BV
   Goss, L
   Lynch, A
AF Blunck, David L.
   Kiel, Barry V.
   Goss, Larry
   Lynch, Amy
TI Spatial Development and Temperature of Spark Kernels Exiting into
   Quiescent Air
SO JOURNAL OF PROPULSION AND POWER
LA English
DT Article; Proceedings Paper
CT 49th AIAA Aerospace Sciences Meeting/New Horizons Forum and Aerospace
   Exposition
CY JAN 03-07, 2011
CL Orlando, FL
SP AIAA
ID CONSTANT VOLUME COMBUSTION; PLASMA-JET; FLAME KERNEL; IGNITION;
   SCHLIEREN; ENERGY; FLOWS
AB Measurements of the spatial development and temperature of spark kernels are useful for understanding the ignition process in spark ignition and gas turbine engines. Motivated by this, an infrared camera was used to make narrowband radiation intensity measurements of spark kernels exiting into quiescent air. An inverse deconvolution technique was developed to estimate the sensible energy and the path-integrated temperature of the kernels. This technique was evaluated using a sensitivity analysis, comparing results to temperature data obtained using background-oriented schlieren, and using a well-characterized hydrogen flame. Infrared images show that the kernels develop into a toroidal shape after exiting the igniter. The average spatial distribution where radiation from kernels is detected is symmetric. Buoyancy forces are negligible. Regions of high and low radiation intensity are observed in the kernels, indicating temperature gradients within the gases. The radiation intensity emitted by the kernels decreases by more than an order of magnitude after the kernels exit the igniter. The average temperature values decrease by 30%, and the sensible energy decreases by 80%, over 2 cm of the spark kernel movement downstream.
C1 [Blunck, David L.; Kiel, Barry V.; Lynch, Amy] USAF, Res Lab, Prop Directorate, Wright Patterson AFB, OH 45433 USA.
   [Goss, Larry] Innovat Sci Solut Inc, Dayton, OH 45440 USA.
RP Blunck, DL (reprint author), USAF, Res Lab, Prop Directorate, Bldg 490,1950 5th St, Wright Patterson AFB, OH 45433 USA.
EM David.Blunck@wpafb.af.mil
NR 35
TC 2
Z9 2
U1 0
U2 4
PU AMER INST AERONAUT ASTRONAUT
PI RESTON
PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091-4344 USA
SN 0748-4658
J9 J PROPUL POWER
JI J. Propul. Power
PD MAY-JUN
PY 2012
VL 28
IS 3
BP 458
EP 465
DI 10.2514/1.B34131
PG 8
WC Engineering, Aerospace
SC Engineering
GA 945OS
UT WOS:000304286500002
ER

PT J
AU Kostka, S
   Branam, RD
   Renfro, MW
   Lakusta, PJ
   Gord, JR
   Roy, S
AF Kostka, Stanislav
   Branam, Richard D.
   Renfro, Michael W.
   Lakusta, Patrick J.
   Gord, James R.
   Roy, Sukesh
TI Laser-Induced Fluorescence Measurements of Product Penetration Within an
   Ultracompact Combustor
SO JOURNAL OF PROPULSION AND POWER
LA English
DT Article
ID TRAPPED-VORTEX COMBUSTOR; FLAME BURNER; TEMPERATURE; HYDROGEN
AB Combustion product propagation within an ultracompact combustor (UCC) is examined using hydroxyl (OH) imaging. The UCC employs a cavity stabilization mechanism, which results in reduced size and weight as compared with those of typical swirl-stabilized combustors. Hydrogen fuel is injected along the outside surface of a circumferential cavity, where it is mixed with air. Following primary combustion within this circumferential cavity, either combustion products or continuing reactions propagate into a main axial-flow cavity, where combustion is completed and products exit the combustor with the main-cavity air flow. Planar laser-induced fluorescence of hydroxyl is used to study the propagation of OH from the circumferential into the main flow cavity with respect to changes in the flow ratios between the cavities and in the equivalence ratio. OH serves as a marker for the location of intermediate combustion products and is typically found within and following the primary reaction region of a flame. Through probability density functions of the peak OH intensity locations, the combustion product impingement into the main cavity is determined to be insensitive to the equivalence ratio. Flow ratios, however, are shown to affect the impingement locations, where increased air flow ratios can reduce the required combustor size by isolating reaction products solely within the secondary cavity.
C1 [Kostka, Stanislav; Roy, Sukesh] Spectral Energies LLC, Dayton, OH 45431 USA.
   [Lakusta, Patrick J.] USAF, Inst Technol, Dept Aeronaut & Astronaut, Wright Patterson AFB, OH 45433 USA.
   [Renfro, Michael W.] Univ Connecticut, Dept Mech Engn, Storrs, CT 06269 USA.
   [Gord, James R.] USAF, Res Lab, Prop Directorate, Wright Patterson AFB, OH 45433 USA.
RP Kostka, S (reprint author), 5100 Springfield St,Suite 301, Dayton, OH USA.
EM stanislavkostka@snet.net
FU Air Force Institute of Technology [FA8601-07-P-0173]; Air Force Research
   Laboratory [FA8650-09-C-2001]; Air Force Office of Scientific Research
FX Funding for this research was provided by the Air Force Institute of
   Technology under contract no. FA8601-07-P-0173, by the Air Force
   Research Laboratory under contract no. FA8650-09-C-2001, and by a grant
   from the Air Force Office of Scientific Research. The authors would like
   to thank the technicians at the Air Force Institute of Technology for
   their assistance in making this research possible.
NR 19
TC 2
Z9 2
U1 1
U2 3
PU AMER INST AERONAUT ASTRONAUT
PI RESTON
PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091-4344 USA
SN 0748-4658
J9 J PROPUL POWER
JI J. Propul. Power
PD MAY-JUN
PY 2012
VL 28
IS 3
BP 617
EP 624
DI 10.2514/1.B34092
PG 8
WC Engineering, Aerospace
SC Engineering
GA 945OS
UT WOS:000304286500017
ER

PT J
AU Bagley, ZC
   Hughes, DH
   Juarez, JC
   Kolodzy, P
   Martin, T
   Northcott, M
   Pike, HA
   Plasson, ND
   Stadler, B
   Stotts, LB
   Young, DW
AF Bagley, Zachary C.
   Hughes, David H.
   Juarez, Juan C.
   Kolodzy, Paul
   Martin, Todd
   Northcott, Malcolm
   Pike, H. Alan
   Plasson, Ned D.
   Stadler, Brian
   Stotts, Larry B.
   Young, David W.
TI Hybrid optical radio frequency airborne communications
SO OPTICAL ENGINEERING
LA English
DT Article
DE optical communications; adaptive optics; lasers; atmospheric optics
AB Optical RF Communications Adjunct Program flight test results provide validation of the theoretical models and hybrid optical radio frequency (RF) airborne system concepts developed by the Defense Advanced Research Projects Agency and the U. S. Air Force Research Laboratory. Theoretical models of the free-space optical communications (FSOC), RF, and network components accurately predict the flight test results under a wide range of day and night operating conditions. The FSOC system, including the adaptive optics and optical modem, can operate under high turbulence conditions. The RF and network mechanisms of Layer 2 retransmission and failover provide increased reliability, reducing end-to-end packet error rates. Overall the test results show that stable, long-range FSOC is possible and practical for near-term operations. (C) 2012 Society of Photo-Optical Instrumentation Engineers (SPIE). [DOI: 10.1117/1.OE.51.5.055006]
C1 [Bagley, Zachary C.] CSW, Commun L3, Adv Comm & DSP Grp, Salt Lake City, UT 84116 USA.
   [Hughes, David H.] AFRL RIGE, Rome, NY 13441 USA.
   [Juarez, Juan C.; Young, David W.] Johns Hopkins Univ, Appl Phys Lab, Laurel, MD 20723 USA.
   [Kolodzy, Paul] Kolodzy Consulting, Centreville, VA 20120 USA.
   [Martin, Todd] Sci & Technol Associates Inc, Arlington, VA 22203 USA.
   [Northcott, Malcolm] AOptix Technol Inc, Campbell, CA 95008 USA.
   [Pike, H. Alan] Def Strategies & Syst Inc, Front Royal, VA 22630 USA.
   [Plasson, Ned D.] Fus Io, Salt Lake City, UT 84121 USA.
   [Stadler, Brian] USAF, Res Lab, AFRL RYJM, Wright Patterson AFB, OH 45433 USA.
   [Stotts, Larry B.] Stotts Consulting, Merrifield, VA 22116 USA.
RP Bagley, ZC (reprint author), CSW, Commun L3, Adv Comm & DSP Grp, 640 North,2200 West, Salt Lake City, UT 84116 USA.
EM lbstotts@gmail.com
NR 29
TC 5
Z9 6
U1 0
U2 7
PU SPIE-SOC PHOTO-OPTICAL INSTRUMENTATION ENGINEERS
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98225 USA
SN 0091-3286
J9 OPT ENG
JI Opt. Eng.
PD MAY
PY 2012
VL 51
IS 5
AR 055006
DI 10.1117/1.OE.51.5.055006
PG 25
WC Optics
SC Optics
GA 949YU
UT WOS:000304615300028
ER

PT J
AU Neff, BJ
   Cain, SC
AF Neff, Brian J.
   Cain, Stephen C.
TI Multiple surface discrimination in three-dimensional FLASH laser radar
   while minimizing the effects of diffraction
SO OPTICAL ENGINEERING
LA English
DT Article
DE three-dimensional FLASH laser radar; Gaussian mixture model; expectation
   maximization; Richardson-Lucy deconvolution; range estimation; imaging
   through obscuration
ID EM ALGORITHM; DECOMPOSITION
AB The goal of this work is to develop an algorithm to enhance the utility of three-dimensional (3-D) FLASH laser radar sensors through accurate ranging to multiple surfaces per image pixel while minimizing the effects of diffraction. With this algorithm it will be possible to realize numerous enhancements over both traditional Gaussian mixture modeling and single-surface range estimation. While traditional Gaussian mixture modeling can effectively model the received pulse, we know that its shape is likely altered by optical aberrations from the imaging system and the medium through which it is imaging. Additionally, only identifying a single surface per pulse may result in the loss of valuable information about partially obscured surfaces. This algorithm enables multisurface ranging of an entire image with a single laser pulse. Ultimately, improvements realized through this new ranging algorithm when coupled with various other techniques may make 3-D FLASH LADAR more suitable for remote sensing applications. Simulation examples show that the multisurface ranging algorithm derived in this work improves range estimation over standard Gaussian mixture modeling and frame-by-frame deconvolution using the Richardson-Lucy algorithm by up to 91% and 70% respectively. (C) 2012 Society of Photo-Optical Instrumentation Engineers (SPIE). [DOI: 10.1117/1.OE.51.5.056201]
C1 [Neff, Brian J.; Cain, Stephen C.] USAF, Inst Technol, Wright Patterson AFB, OH 45433 USA.
RP Neff, BJ (reprint author), USAF, Inst Technol, 2950 Hobson Way, Wright Patterson AFB, OH 45433 USA.
EM brian.neff@afit.edu
FU Air Force Office of Scientific Research (AFOSR)
FX The authors would like to acknowledge the Air Force Office of Scientific
   Research (AFOSR) for their continued funding of research within this
   discipline. The views expressed in this paper are those of the authors
   and do not reflect the official policy or position of the United States
   Air Force, Department of Defense, or the United States Government.
NR 16
TC 1
Z9 1
U1 2
U2 8
PU SPIE-SOC PHOTO-OPTICAL INSTRUMENTATION ENGINEERS
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98225 USA
SN 0091-3286
J9 OPT ENG
JI Opt. Eng.
PD MAY
PY 2012
VL 51
IS 5
AR 056201
DI 10.1117/1.OE.51.5.056201
PG 16
WC Optics
SC Optics
GA 949YU
UT WOS:000304615300031
ER

PT J
AU Drachuk, I
   Shchepelina, O
   Lisunova, M
   Harbaugh, S
   Kelley-Loughnane, N
   Stone, M
   Tsukruk, VV
AF Drachuk, Irina
   Shchepelina, Olga
   Lisunova, Milana
   Harbaugh, Svetlana
   Kelley-Loughnane, Nancy
   Stone, Morley
   Tsukruk, Vladimir V.
TI pH-Responsive Layer-by-Layer Nanoshells for Direct Regulation of Cell
   Activity
SO ACS NANO
LA English
DT Article
DE layer-by-layer assembly; pH-responsive nanoshells; polymethacrylic acid;
   hydrogel; cell-based biosensors
ID MULTILAYER THIN-FILMS; DRUG-DELIVERY; LIVING CELLS; POLYELECTROLYTE
   MULTILAYERS; MICROMECHANICAL PROPERTIES; SURFACE MODIFICATION; FORCE
   MICROSCOPY; POLYMER-FILMS; CROSS-LINKING; CAPSULES
AB Saccharomyces cerevisiae yeast cells encapsulated with pH-responsive synthetic nanoshells from lightly cross-linked polymethacrylic add showed a high viability rate of around 90%, an indication of high biocompatibility of synthetic pH-responsive shells. We demonstrated that increasing pH above the isoelectric point of the polymer shell leads to a delay in growth rate; however, it does not affect the expression of enhanced green fluorescent protein. We suggest that progressive ionization and charge accumulation within the synthetic shells evoke a structural change in the outer shells which affect the membrane transport. This change facilitates the ability to manipulate growth kinetics and functionality of the cells with the surrounding environment. We observed that hollow layer-by layer nanoshells showed a remarkable degree of reversible swelling/deswelling over a narrow pH range (pH 5.0-6.0), but their assembly directly on the cell surface resulted in the suppression of large dimensional changes. We suggest that the variation in surface charges caused by deprotonation/protonation of carboxylic groups in the nanoshells controlled cell growth and cell function, which can be utilized for external chemical control of cell-based biosensors.
C1 [Drachuk, Irina; Shchepelina, Olga; Lisunova, Milana; Tsukruk, Vladimir V.] Georgia Inst Technol, Sch Mat Sci & Engn, Atlanta, GA 30332 USA.
   [Harbaugh, Svetlana; Kelley-Loughnane, Nancy; Stone, Morley] Wright Patterson AFB, Directorate Human Effectiveness, AF Res Lab, Dayton, OH 45433 USA.
RP Tsukruk, VV (reprint author), Georgia Inst Technol, Sch Mat Sci & Engn, Atlanta, GA 30332 USA.
EM vladimir@mse.gatech.edu
RI luo, xuemei/G-3047-2013
FU (BIONIC Center) from Air Force Office of Scientific Research
   [FA9550-11-1-0233, FA9550-09-1-0162]; Department of Energy (DOE)
   [DE-FG02-09ER46604]
FX The study is supported by Grants FA9550-11-1-0233 and FA9550-09-1-0162
   (BIONIC Center) from Air Force Office of Scientific Research (cell
   encapsulation) and Project # DE-FG02-09ER46604 from Department of Energy
   (DOE) (shell formation). We are grateful to Prof. N. Kroger for
   providing access to Zeta-sizer, and S. Young for the help with ATR-FTIR.
NR 78
TC 46
Z9 46
U1 4
U2 73
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1936-0851
EI 1936-086X
J9 ACS NANO
JI ACS Nano
PD MAY
PY 2012
VL 6
IS 5
BP 4266
EP 4278
DI 10.1021/nn3008355
PG 13
WC Chemistry, Multidisciplinary; Chemistry, Physical; Nanoscience &
   Nanotechnology; Materials Science, Multidisciplinary
SC Chemistry; Science & Technology - Other Topics; Materials Science
GA 944VK
UT WOS:000304231700068
PM 22489604
ER

PT J
AU Lin, F
   Qiu, RC
   Hu, Z
   Hou, SJ
   Browning, JP
   Wicks, MC
AF Lin, Feng
   Qiu, Robert C.
   Hu, Zhen
   Hou, Shujie
   Browning, James P.
   Wicks, Michael C.
TI Generalized FMD Detection for Spectrum Sensing under Low Signal-to-Noise
   Ratio
SO IEEE COMMUNICATIONS LETTERS
LA English
DT Article
DE Function of matrix; spectrum sensing; low SNR detection; cognitive radio
   network
ID COGNITIVE RADIO
AB Spectrum sensing is a fundamental problem in cognitive radio. We propose a function of covariance matrix based detection algorithm for spectrum sensing in cognitive radio network. Monotonically increasing property of function of matrix involving trace operation is utilized as the cornerstone for this algorithm. The advantage of proposed algorithm is it works under extremely low signal-to-noise ratio, like lower than -30 dB with limited sample data. Theoretical analysis of threshold setting for the algorithm is discussed. A performance comparison between the proposed algorithm and other state-of-the-art methods is provided, by the simulation on captured digital television (DTV) signal.
C1 [Lin, Feng; Qiu, Robert C.; Hu, Zhen; Hou, Shujie] Tennessee Technol Univ, Dept Elect & Comp Engn, Ctr Mfg Res, Cookeville, TN 38505 USA.
   [Browning, James P.] USAF, Res Lab, Wright Patterson AFB, OH 45433 USA.
   [Wicks, Michael C.] Univ Dayton, Res Inst, Sensor Syst Div, Dayton, OH 45469 USA.
RP Lin, F (reprint author), Tennessee Technol Univ, Dept Elect & Comp Engn, Ctr Mfg Res, Cookeville, TN 38505 USA.
EM fenglin@ieee.org; rqiu@tntech.edu; zhu@tntech.edu;
   shou42@students.tntech.edu; James.Browning@wpafb.af.mil;
   Michael.Wicks@udri.udayton.edu
FU National Science Foundation [ECCS-0901420, ECCS-0821658]; Office of
   Naval Research [N00010-10-1-0810, N00014-11-1-0006]
FX This work is funded by National Science Foundation through two grants
   (ECCS-0901420 and ECCS-0821658), and Office of Naval Research through
   two grants (N00010-10-1-0810 and N00014-11-1-0006).
NR 10
TC 9
Z9 10
U1 0
U2 3
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 1089-7798
J9 IEEE COMMUN LETT
JI IEEE Commun. Lett.
PD MAY
PY 2012
VL 16
IS 5
BP 604
EP 607
DI 10.1109/LCOMM.2012.030512.112164
PG 4
WC Telecommunications
SC Telecommunications
GA 943YS
UT WOS:000304164600010
ER

PT J
AU Altfeder, I
   Krim, J
AF Altfeder, Igor
   Krim, Jacqueline
TI Temperature dependence of nanoscale friction for Fe on YBCO
SO JOURNAL OF APPLIED PHYSICS
LA English
DT Article
ID SCANNING-TUNNELING-MICROSCOPY; CONTACT ELECTRIFICATION; FORCE
   MICROSCOPY; ADSORBED LAYERS; THIN-FILMS; SURFACE; PSEUDOGAP;
   SUPERCONDUCTIVITY; YBA2CU3O7-DELTA; TRIBOLOGY
AB A magnetic probe microscopy study of levitation and atomic-scale friction is reported for Fe on YBCO (Tc = 92.5 K) in the temperature range 65-293 K. Below Tc, the friction coefficient is constant and exhibits no correlation with the strength of superconducting levitation forces. Above Tc, the friction coefficient increases progressively, and nearly doubles between Tc and room temperature. The results are discussed within the context of the underlying atomic-scale electronic and phononic mechanisms that give rise to friction, and it is concluded that contact electrification and static electricity may play a significant role in the non-superconducting phase. Given that the properties of YBCO can be finely tuned, the results point the way to a variety of interesting studies of friction and superconductors. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4717983]
C1 [Altfeder, Igor] USAF, Thermal Sci & Mat Branch, Res Lab, Wright Patterson AFB, OH 45433 USA.
   [Krim, Jacqueline] N Carolina State Univ, Dept Phys, Raleigh, NC 27695 USA.
RP Altfeder, I (reprint author), USAF, Thermal Sci & Mat Branch, Res Lab, Wright Patterson AFB, OH 45433 USA.
FU NSF DMR [DMR0805204]; AFOSR [FA9550-04-1-0381]
FX This work has been supported by NSF DMR ##DMR0805204 and the Extreme
   Friction MURI program, AFOSR Grant No. FA9550-04-1-0381. The authors
   acknowledge A. Voevodin, J. Jones, R. B. Laughlin, S. Patton, M.
   Salmeron, W. G. Sawyer, P. Taborek, and Z. Zhang for helpful discussions
   and interest in this work.
NR 51
TC 7
Z9 8
U1 3
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 MAY 1
PY 2012
VL 111
IS 9
AR 094916
DI 10.1063/1.4717983
PG 6
WC Physics, Applied
SC Physics
GA 943GY
UT WOS:000304109900163
ER

PT J
AU MacDonald, NA
   Young, CV
   Cappelli, MA
   Hargus, WA
AF MacDonald, N. A.
   Young, C. V.
   Cappelli, M. A.
   Hargus, W. A., Jr.
TI Ion velocity and plasma potential measurements of a cylindrical cusped
   field thruster
SO JOURNAL OF APPLIED PHYSICS
LA English
DT Article
ID HALL THRUSTER; LOW-POWER
AB Measurements of the most probable time-averaged axial ion velocities and plasma potential within the acceleration channel and in the plume of a straight-channeled cylindrical cusped field thruster operating on xenon are presented. Ion velocities for the thruster are derived from laser-induced fluorescence measurements of the 5d[4](7/2) - 6p[3](5/2) xenon ion excited state transition centered at lambda = 834: 72 nm. Plasma potential measurements are made using a floating emissive probe with a thoriated-tungsten filament. The thruster is operated in a power matched condition with 300V applied anode potential for comparison to previous krypton plasma potential measurements, and a low power condition with 150V applied anode potential. Correlations are seen between the plasma potential drop outside of the thruster and kinetic energy contours of the accelerating ions. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4707953]
C1 [MacDonald, N. A.; Young, C. V.; Cappelli, M. A.] Stanford Univ, Stanford Plasma Phys Lab, Stanford, CA 94305 USA.
   [Hargus, W. A., Jr.] USAF, Spacecraft Prop Branch, Res Lab, Edwards Afb, CA 93524 USA.
RP MacDonald, NA (reprint author), Stanford Univ, Stanford Plasma Phys Lab, Stanford, CA 94305 USA.
EM smacdo@stanford.edu
OI Young, Christopher/0000-0002-8075-7550
FU Science Mathematics and Research for Transformation (SMART); U.S.
   Department of Energy [DE-FC52-08NA28752]; Air Force Office of Scientific
   Research
FX The authors would like to thank A. Smith of Stanford University and B.
   Gregory, Lt. A. Campos, and G. Arzonia of AFRL for their technical
   support. N. A. MacDonald acknowledges the Science Mathematics and
   Research for Transformation (SMART) scholarship program for support of
   her research. C. V. Young acknowledges support from the U.S. Department
   of Energy Stewardship Science Graduate Fellowship (SSGF) provided under
   Grant No. DE-FC52-08NA28752. Research at Stanford is funded through the
   Air Force Office of Scientific Research with Dr. M. Birkan as grant
   monitor.
NR 20
TC 16
Z9 17
U1 6
U2 19
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 2012
VL 111
IS 9
AR 093303
DI 10.1063/1.4707953
PG 7
WC Physics, Applied
SC Physics
GA 943GY
UT WOS:000304109900016
ER

PT J
AU Stanford, B
   Beran, P
AF Stanford, Bret
   Beran, Philip
TI Optimal Compliant Flapping Mechanism Topologies With Multiple Load Cases
SO JOURNAL OF MECHANICAL DESIGN
LA English
DT Article
ID MICRO AIR VEHICLES; OPTIMIZATION; DESIGN; PARAMETERIZATION;
   AERODYNAMICS; KINEMATICS; INSECT; WINGS
AB The conceptual design of effective actuation mechanisms for flapping wing micro air vehicles presents considerable challenges, with competing weight, power, authority, and life cycle requirements. This work utilizes topology optimization to obtain compliant flapping mechanisms; this is a well-known tool, but the method is rarely extended to incorporate unsteady nonlinear aeroelastic physics, which must be accounted for in the design of flapping wing vehicles. Compliant mechanism topologies are specifically desired to perform two tasks: (1) propulsive thrust generation (symmetric motions of a left and a right wing) and (2) lateral roll moment generation (asymmetric motions). From an optimization standpoint, these two tasks are considered multiple load cases, implemented by scheduling the actuation applied to the mechanism's design domain. Mechanism topologies obtained with various actuation-scheduling assumptions are provided, along with the resulting flapping wing motions and aerodynamic force/moment generation. Furthermore, it is demonstrated that both load cases may be used simultaneously for future vehicle control studies: gradual transition from forward flight into a turning maneuver, for example. [DOI:10.1115/1.4006438]
C1 [Stanford, Bret; Beran, Philip] USAF, Res Lab, Wright Patterson AFB, OH 45433 USA.
RP Stanford, B (reprint author), USAF, Res Lab, Wright Patterson AFB, OH 45433 USA.
EM bret.stanford@wpafb.af.mil; philip.beran@wpafb.af.mil
FU Air Force Office of Scientific Research [09RB01COR, 03VA01COR]
FX This work is sponsored by the Air Force Office of Scientific Research
   under Laboratory Tasks 09RB01COR (monitored by Dr. Doug Smith) and
   03VA01COR (monitored by Dr. Fariba Fahroo). The authors would also like
   to thank Dr. Greg Reich of the Air Force Research Laboratory for his
   helpful suggestions concerning this work.
NR 35
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U1 1
U2 14
PU ASME-AMER SOC MECHANICAL ENG
PI NEW YORK
PA THREE PARK AVE, NEW YORK, NY 10016-5990 USA
SN 1050-0472
J9 J MECH DESIGN
JI J. Mech. Des.
PD MAY
PY 2012
VL 134
IS 5
AR 051007
DI 10.1115/1.4006438
PG 10
WC Engineering, Mechanical
SC Engineering
GA 946PW
UT WOS:000304366100008
ER

PT J
AU Fink, M
   Libow, L
   Arnold, J
   Browning, JC
AF Fink, Matthew
   Libow, Lester
   Arnold, Jason
   Browning, John C.
TI PERSISTENT UMBILICAL NODULE
SO PEDIATRIC DERMATOLOGY
LA English
DT Editorial Material
ID OF-THE-LITERATURE; BRONCHOGENIC CYST; BACK
C1 [Fink, Matthew; Browning, John C.] Univ Texas Hlth Sci Ctr San Antonio, Div Dermatol & Cutaneous Surg, San Antonio, TX 77229 USA.
   [Fink, Matthew; Browning, John C.] Univ Texas Hlth Sci Ctr San Antonio, Dept Pediat, San Antonio, TX 77229 USA.
   [Libow, Lester] S Texas Dermatopathol Lab, San Antonio, TX USA.
   [Arnold, Jason] San Antonio Mil Med Ctr, San Antonio, TX USA.
   [Arnold, Jason] Wilford Hall USAF Med Ctr, San Antonio Uniformed Serv Hlth Educ Consortium, San Antonio, TX 78236 USA.
RP Browning, JC (reprint author), Univ Texas Hlth Sci Ctr San Antonio, Div Dermatol, 7703 Floyd Curl Dr,MSC 7808, San Antonio, TX 77229 USA.
EM Browningj3@uthsca.edu
NR 5
TC 0
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U1 0
U2 0
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 0736-8046
J9 PEDIATR DERMATOL
JI Pediatr. Dermatol.
PD MAY-JUN
PY 2012
VL 29
IS 3
BP 363
EP 364
DI 10.1111/j.1525-1470.2011.01634.x
PG 2
WC Dermatology; Pediatrics
SC Dermatology; Pediatrics
GA 943QM
UT WOS:000304139900029
PM 22594338
ER

PT J
AU Mukhopadhyay, A
   Grabinski, C
   Afrooz, ARMN
   Saleh, NB
   Hussain, S
AF Mukhopadhyay, Amrita
   Grabinski, Christin
   Afrooz, A. R. M. Nabiul
   Saleh, Navid B.
   Hussain, Saber
TI Effect of Gold Nanosphere Surface Chemistry on Protein Adsorption and
   Cell Uptake In Vitro
SO APPLIED BIOCHEMISTRY AND BIOTECHNOLOGY
LA English
DT Article
DE Gold nanoparticles; Tannic acid; Citric acid; Surface chemistry;
   Stabilizing agent; Cell uptake; Protein adsorption
ID LIGHT-SCATTERING; NANOPARTICLES; TOXICITY; PEPTIDE; SIZE; CHALLENGE;
   DELIVERY; CANCER
AB Gold nanoparticles exhibit unique spectral properties that make them ideal for biosensing, imaging, drug delivery, and other therapeutic applications. Interaction of gold nanoparticles within biological environments is dependent on surface characteristics, which may rely on particular capping agents. In this study, gold nanospheres (GNS) synthesized with different capping agents-specifically citric acid (CA) and tannic acid (TA)-were compared for serum protein adsorption and cellular uptake into a lung epithelial cell line (A549). Both GNS samples exhibited noticeable protein adsorption based on surface charge data after exposure to serum proteins. Light scattering measurements revealed that GNS-CA-protein composites were smaller and less dense compared to GNS-TA-protein composites. The cell uptake characteristics of these nanoparticles were also different. GNS-CA formed large clusters and elicited high uptake, while GNS-TA were taken up as discrete particles, possibly through nonendosomal mechanisms. These results indicate that the capping agents used for GNS synthesis result in unique biological interactions.
C1 [Mukhopadhyay, Amrita; Grabinski, Christin; Afrooz, A. R. M. Nabiul; Saleh, Navid B.; Hussain, Saber] USAF, Res Lab, Wright Patterson AFB, OH 45433 USA.
   [Afrooz, A. R. M. Nabiul; Saleh, Navid B.] Univ S Carolina, Dept Civil & Environm Engn, Columbia, SC 29208 USA.
RP Hussain, S (reprint author), USAF, Res Lab, Wright Patterson AFB, OH 45433 USA.
EM saber.hussain@wpafb.af.mil
RI Mahapatra, Indrani/D-7506-2011; 
OI Afrooz, ARM/0000-0002-9141-9426
FU Wright Scholar program; US Air Force Research Laboratory
FX Ms. Mukhopadhyay was supported through the Wright Scholar program. This
   research was supported in part by an appointment to the Postgraduate
   Research Participation Program at the US Air Force Research Laboratory
   administered by the Oak Ridge Institute for Science and Education
   through an interagency agreement between the US Department of Energy and
   USAFRL.
NR 43
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U1 2
U2 40
PU HUMANA PRESS INC
PI TOTOWA
PA 999 RIVERVIEW DRIVE SUITE 208, TOTOWA, NJ 07512 USA
SN 0273-2289
J9 APPL BIOCHEM BIOTECH
JI Appl. Biochem. Biotechnol.
PD MAY
PY 2012
VL 167
IS 2
BP 327
EP 337
DI 10.1007/s12010-012-9666-z
PG 11
WC Biochemistry & Molecular Biology; Biotechnology & Applied Microbiology
SC Biochemistry & Molecular Biology; Biotechnology & Applied Microbiology
GA 944LR
UT WOS:000304204300011
PM 22547299
ER

PT J
AU Wu, Y
   Cheng, J
   Wang, JQ
   Lu, HQ
   Wang, J
   Ling, HB
   Blasch, E
   Bai, L
AF Wu, Yi
   Cheng, Jian
   Wang, Jinqiao
   Lu, Hanqing
   Wang, Jun
   Ling, Haibin
   Blasch, Erik
   Bai, Li
TI Real-Time Probabilistic Covariance Tracking With Efficient Model Update
SO IEEE TRANSACTIONS ON IMAGE PROCESSING
LA English
DT Article
DE Covariance descriptor; incremental learning; model update; particle
   filter; Riemannian manifolds; visual tracking
ID VISUAL TRACKING; RECOGNITION; SELECTION; MATRICES; FEATURES
AB The recently proposed covariance region descriptor has been proven robust and versatile for a modest computational cost. The covariance matrix enables efficient fusion of different types of features, where the spatial and statistical properties, as well as their correlation, are characterized. The similarity between two covariance descriptors is measured on Riemannian manifolds. Based on the same metric but with a probabilistic framework, we propose a novel tracking approach on Riemannian manifolds with a novel incremental covariance tensor learning (ICTL). To address the appearance variations, ICTL incrementally learns a low-dimensional covariance tensor representation and efficiently adapts online to appearance changes of the target with only O(1) computational complexity, resulting in a real-time performance. The covariance-based representation and the ICTL are then combined with the particle filter framework to allow better handling of background clutter, as well as the temporary occlusions. We test the proposed probabilistic ICTL tracker on numerous benchmark sequences involving different types of challenges including occlusions and variations in illumination, scale, and pose. The proposed approach demonstrates excellent real-time performance, both qualitatively and quantitatively, in comparison with several previously proposed trackers.
C1 [Cheng, Jian; Wang, Jinqiao; Lu, Hanqing] Chinese Acad Sci, Inst Automat, Beijing 100190, Peoples R China.
   [Wu, Yi] Nanjing Univ Informat Sci & Technol, Sch Informat & Control Engn, Nanjing 210044, Jiangsu, Peoples R China.
   [Ling, Haibin] Temple Univ, Dept Comp & Informat Sci, Philadelphia, PA 19122 USA.
   [Wang, Jun] Nanjing Univ Informat Sci & Technol, Network Ctr, Nanjing 210044, Jiangsu, Peoples R China.
   [Blasch, Erik] USAF, Res Lab, AFRL RYAA, Wright Patterson AFB, OH 45433 USA.
   [Bai, Li] Temple Univ, Dept Elect & Comp Engn, Philadelphia, PA 19122 USA.
RP Wang, JQ (reprint author), Chinese Acad Sci, Inst Automat, Beijing 100190, Peoples R China.
EM jqwang@nlpr.ia.ac.cn
FU 973 Program [2010CB327905]; National Natural Science Foundation of China
   [61005027, 60835002, 60833006, 60905008]; National Science Foundation
   [IIS-0916624, IIS-1049032]
FX This work was supported in part by the 973 Program under Project
   2010CB327905, by the National Natural Science Foundation of China under
   Grant 61005027, Grant 60835002, Grant 60833006, and Grant 60905008, and
   by the National Science Foundation under Grant IIS-0916624 and Grant
   IIS-1049032. The associate editor coordinating the review of this
   manuscript and approving it for publication was Dr. Arun Abraham Ross.
NR 48
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PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 1057-7149
J9 IEEE T IMAGE PROCESS
JI IEEE Trans. Image Process.
PD MAY
PY 2012
VL 21
IS 5
BP 2824
EP 2837
DI 10.1109/TIP.2011.2182521
PG 14
WC Computer Science, Artificial Intelligence; Engineering, Electrical &
   Electronic
SC Computer Science; Engineering
GA 943XO
UT WOS:000304160800038
PM 22231177
ER

PT J
AU Barrera, J
   Connor, MP
AF Barrera, Jose
   Connor, Matthew P.
TI Noma in an Afghani child: A case report
SO INTERNATIONAL JOURNAL OF PEDIATRIC OTORHINOLARYNGOLOGY
LA English
DT Article
DE Noma; Cancrum Oris; Afghanistan; Infection
ID ORIS
AB We present a case of Cancrum Oris, also known as Noma, in a child treated by an Otorhinolaryngologist at a United States-led Joint Forces hospital in Afghanistan. Noma is a deadly, necrotizing infection of the face that is rarely seen in wealthy nations but can cause significant morbidity in third world countries. Through a literature review, we report the incidence, risk factors, clinical features, and proposed treatment for this disease. Published by Elsevier Ireland Ltd.
C1 [Barrera, Jose; Connor, Matthew P.] San Antonio Mil Med Ctr, Dept Otolaryngol, Lackland AFB, TX USA.
RP Connor, MP (reprint author), Wilford Hall USAF Med Ctr, Dept Otolaryngol, SSS SG020, 2200 Bergquist Dr,Suite 100, Lackland AFB, TX 78236 USA.
EM matthew.connor.2@us.af.mil
NR 5
TC 2
Z9 2
U1 0
U2 0
PU ELSEVIER IRELAND LTD
PI CLARE
PA ELSEVIER HOUSE, BROOKVALE PLAZA, EAST PARK SHANNON, CO, CLARE, 00000,
   IRELAND
SN 0165-5876
J9 INT J PEDIATR OTORHI
JI Int. J. Pediatr. Otorhinolaryngol.
PD MAY
PY 2012
VL 76
IS 5
BP 742
EP 744
DI 10.1016/j.ijporl.2012.01.034
PG 3
WC Otorhinolaryngology; Pediatrics
SC Otorhinolaryngology; Pediatrics
GA 940NX
UT WOS:000303901400025
PM 22381363
ER

PT J
AU Mull, DM
   Sitzabee, WE
AF Mull, Dale M.
   Sitzabee, William E.
TI Paint Pavement Marking Performance Prediction Model
SO JOURNAL OF TRANSPORTATION ENGINEERING-ASCE
LA English
DT Article
DE Snow removal; Pavement markings; Pavement management; Traffic control
   devices; Service life; Regression models; Degradation; Management
   methods
AB The purpose of this research effort was to develop a new performance prediction model for paint pavement markings that includes the effect of snow removal operations. The paper first develops a model based on data from North Carolina. The authors then apply the model to a small stretch of road in Ohio to explore the utility of the model in other states. Recently proposed Manual of Uniform Traffic Control Devices (MUTCD) minimum standards for pavement marking retroreflectivity were combined with the newly developed degradation model to determine the remaining service life of four road segments due for replacement according to standard operating procedure. This model showed 3 years of service life remaining for two of the road segments, indicating that replacement is unnecessary. Using the model developed in this paper, the remaining service life of a paint pavement marking can be estimated, and asset managers can avoid premature replacement of pavement markings. A key finding of this research is that each snow removal event subtracts more than 1 month of service life from paint pavement markings. DOI: 10.1061/(ASCE)TE.1943-5436.0000360. (C) 2012 American Society of Civil Engineers.
C1 [Sitzabee, William E.] USAF, Inst Technol, Wright Patterson AFB, OH 45433 USA.
RP Sitzabee, WE (reprint author), USAF, Inst Technol, 2950 Hobson Way,Bldg 641, Wright Patterson AFB, OH 45433 USA.
EM dale.mull@us.af.mil; william.sitzabee@afit.edu
NR 17
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U1 5
U2 11
PU ASCE-AMER SOC CIVIL ENGINEERS
PI RESTON
PA 1801 ALEXANDER BELL DR, RESTON, VA 20191-4400 USA
SN 0733-947X
J9 J TRANSP ENG-ASCE
JI J. Transp. Eng.-ASCE
PD MAY
PY 2012
VL 138
IS 5
BP 618
EP 624
DI 10.1061/(ASCE)TE.1943-5436.0000360
PG 7
WC Engineering, Civil; Transportation Science & Technology
SC Engineering; Transportation
GA 941BO
UT WOS:000303937200014
ER

PT J
AU Meyer, EG
   Writer, BW
AF Meyer, Eric G.
   Writer, Brian W.
TI Salvia Divinorum
SO PSYCHOSOMATICS
LA English
DT Article
ID SALVINORIN-A
C1 [Meyer, Eric G.; Writer, Brian W.] San Antonio Uniformed Serv Hlth Educ Consortium, San Antonio, TX USA.
   [Meyer, Eric G.] Uniformed Serv Univ Hlth Sci, Bethesda, MD 20814 USA.
   [Writer, Brian W.] Univ Texas Hlth Sci Ctr San Antonio, San Antonio, TX 78229 USA.
RP Meyer, EG (reprint author), Wilford Hall USAF Med Ctr, 59 MHS SGOWV1,2200 Bergquist Dr,Ste 1, Lackland AFB, TX 78236 USA.
EM eric.meyer@us.af.mil
NR 18
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U1 1
U2 25
PU AMER PSYCHIATRIC PUBLISHING, INC
PI ARLINGTON
PA 1000 WILSON BOULEVARD, STE 1825, ARLINGTON, VA 22209-3901 USA
SN 0033-3182
J9 PSYCHOSOMATICS
JI Psychosomatics
PD MAY-JUN
PY 2012
VL 53
IS 3
BP 277
EP 279
PG 3
WC Psychiatry; Psychology
SC Psychiatry; Psychology
GA 941MV
UT WOS:000303968200011
PM 22289631
ER

PT J
AU Findley, JC
   Joshi, KG
AF Findley, Jonathan Chase
   Joshi, Kaustubh G.
TI A Case of Repeated Brief Psychotic Episodes Secondary to Discontinuation
   of Non-Prescription Estrogen Replacement Therapy
SO PSYCHOSOMATICS
LA English
DT Article
ID SCHIZOPHRENIA; DISEASE
C1 [Findley, Jonathan Chase] Univ Texas Hlth Sci Ctr San Antonio, Sch Med, Dept Psychiat, San Antonio, TX 78229 USA.
   [Joshi, Kaustubh G.] Wilford Hall USAF Med Ctr, Lackland AFB, TX 78236 USA.
RP Findley, JC (reprint author), Univ Texas Hlth Sci Ctr San Antonio, Sch Med, Dept Psychiat, 7703 Floyd Curl Dr,Mail Code 7792, San Antonio, TX 78229 USA.
EM findley@uthscsa.edu
NR 7
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Z9 2
U1 0
U2 0
PU AMER PSYCHIATRIC PUBLISHING, INC
PI ARLINGTON
PA 1000 WILSON BOULEVARD, STE 1825, ARLINGTON, VA 22209-3901 USA
SN 0033-3182
J9 PSYCHOSOMATICS
JI Psychosomatics
PD MAY-JUN
PY 2012
VL 53
IS 3
BP 285
EP 288
PG 4
WC Psychiatry; Psychology
SC Psychiatry; Psychology
GA 941MV
UT WOS:000303968200013
PM 22305488
ER

PT J
AU Kwon, YW
   Choi, DH
   Jin, JI
   Lee, CH
   Koh, EK
   Grote, JG
AF Kwon, Young-Wan
   Choi, Dong Hoon
   Jin, Jung-Il
   Lee, Chang Hoon
   Koh, Eui Kwan
   Grote, James G.
TI Comparison of magnetic properties of DNA-cetyltrimethyl ammonium complex
   with those of natural DNA
SO SCIENCE CHINA-CHEMISTRY
LA English
DT Article
DE natural DNA; DNA-CTMA; DNA-CTMA-PTMI; magnetic property; electron
   magnetic resonance (EMR); superconducting quantum interference device
   (SQUID)
ID BEARING CARBAZOLE MOIETIES; ELECTRON SPIN RESONANCE;
   LIGHT-EMITTING-DIODES; DEOXYRIBONUCLEIC-ACID; NUCLEIC ACID; NANOPARTICLE
   ASSEMBLIES; OPTICAL-PROPERTIES; CHARGE-TRANSPORT; HOLE TRANSPORT;
   MOLECULES
AB We prepared the DNA-cetyltrimethyl ammonium complex, as well as the same complex intercalated with stable organic free radicals, and studied their magnetic properties by electron magnetic resonance (EMR) spectroscopy and by measuring the magnetization on a superconducting quantum interference device (SQUID). The UV-vis and CD spectra of DNA-quaternary alkyl ammonium complex (DNA(-)-Q(+)) in organic solvent clearly demonstrated that it retained the double helical B-form conformation. The interhelical spacing of double strand DNA (dsDNA) increased when the counter ions (Na+) of phosphate groups of the natural DNA were replaced with the long alkyl quaternary ammonium groups. The inter-helical distance of DNA-cetyltrimethyl ammonium (CTMA) was 39.1 as confirmed by X-ray diffractometry. In general, the magnetization of the DNA-CTMA complex solid was found to be significantly lower than that of natural DNA. Moreover, intercalation of the complex with stable organic free radicals did not improve magnetization, which again was in marked contrast to natural DNA. EMR spectroscopic behavior of the complex in the solid state also was quite different from that of natural DNA: The unique broad EMR signal of natural DNA in the low field region with g-value greater than 10 disappeared in the DNA-CTMA complex.
C1 [Kwon, Young-Wan; Choi, Dong Hoon; Jin, Jung-Il] Korea Univ, Dept Chem, Seoul 136701, South Korea.
   [Lee, Chang Hoon] Chosun Univ, Dept Polymer Sci & Engn, Kwangju 501759, South Korea.
   [Koh, Eui Kwan] Korea Univ, Korea Basic Sci Inst, Seoul Branch, Seoul 136701, South Korea.
   [Grote, James G.] USAF, Res Lab, Mat & Mfg Directorate, AFRL MLPS, Wright Patterson AFB, OH 45433 USA.
RP Kwon, YW (reprint author), Korea Univ, Dept Chem, Seoul 136701, South Korea.
EM ywkwon@korea.ac.kr; jijin@korea.ac.kr
FU Korean National Foundation [2010-0013225]
FX This article is based on the report "Electromagnetic Properties of
   Modified DNA" (AOARD-074023) submitted by J.-I. Jin to the Asian Office
   of Aerospace R&D of the U.S.A. and KICOS of the Republic of Korea
   (K2071600003-07A0400-00310). Young-Wan Kwon would like to express his
   gratitude to the Korean National Foundation for the support
   (2010-0013225).
NR 87
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U1 2
U2 11
PU SCIENCE PRESS
PI BEIJING
PA 16 DONGHUANGCHENGGEN NORTH ST, BEIJING 100717, PEOPLES R CHINA
SN 1674-7291
J9 SCI CHINA CHEM
JI Sci. China-Chem.
PD MAY
PY 2012
VL 55
IS 5
SI SI
BP 814
EP 821
DI 10.1007/s11426-012-4507-z
PG 8
WC Chemistry, Multidisciplinary
SC Chemistry
GA 945BT
UT WOS:000304248500021
ER

PT J
AU Cui, Y
   Kim, SN
   Naik, RR
   Mcalpine, MC
AF Cui, Yue
   Kim, Sang N.
   Naik, Rajesh R.
   Mcalpine, Michael C.
TI Biomimetic Peptide Nanosensors
SO ACCOUNTS OF CHEMICAL RESEARCH
LA English
DT Review
ID PHAGE DISPLAYED PEPTIDES; CARBON NANOTUBES; CHEMICAL SENSORS; GRAPHENE;
   FUNCTIONALIZATION; RECOGNITION; TRANSISTORS; NANOWIRES; MOLECULES;
   PHEROMONE
AB The development of a miniaturized sensing platform tailored for sensitive and selective detection of a variety of biochemical analytes could offer transformative fundamental and technological opportunities. Due to their high surface-to-volume ratios, nanoscale materials are extremely sensitive sensors. Likewise, peptides represent robust substrates for selective recognition due to the potential for broad chemical diversity within their relatively compact size. Here we explore the possibilities of linking peptides to nanosensors for the selective detection of biochemical targets. Such systems raise a number of interesting fundamental challenges: What are the peptide sequences, and how can rational design be used to derive selective binders? What nanomaterials should be used, and what are some strategies for assembling hybrid nanosensors? What role does molecular modeling play in elucidating response mechanisms? What is the resulting performance of these sensors, in terms of sensitivity, selectivity, and response time? What are some potential applications? This Account will highlight our early attempts to address these research challenges.
   Specifically, we use natural peptide sequences or sequences identified from phage display as capture elements. The sensors are based on a variety of nanomaterials including nanowires, graphene, and carbon nanotubes. We couple peptides to the nanomaterial surfaces via traditional surface functionalization methods or self-assembly. Molecular modeling provides detailed insights into the hybrid nanostructure, as well as the sensor detection mechanisms. The peptide nanosensors can distinguish chemically camouflaged mixtures of vapors and detect chemical warfare agents with sensitivities as low as parts-per-billion levels. Finally, we anticipate future uses of this technology in biomedicine: for example, devices based on these sensors could detect disease from the molecular components in human breath. Overall, these results provide a novel platform for the development of highly sensitive and selective "nanoelectronic noses".
C1 [Kim, Sang N.; Naik, Rajesh R.] USAF, Res Lab, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA.
   [Cui, Yue; Mcalpine, Michael C.] Princeton Univ, Dept Mech & Aerosp Engn, Princeton, NJ 08544 USA.
   [Cui, Yue] Utah State Univ, Dept Biol Engn, Logan, UT 84322 USA.
RP Naik, RR (reprint author), USAF, Res Lab, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA.
EM Rajesh.Naik@WPAFB.AF.MIL; mcm@princeton.edu
FU Air Force Office of Scientific Research [FA9550-09-1-0096]; American
   Asthma Foundation [09-0038]
FX We acknowledge support of this work by the Air Force Office of
   Scientific Research (Grant No. FA9550-09-1-0096) and by the American
   Asthma Foundation (Grant No. 09-0038). We acknowledge Habib Ahmad for
   drawing Figure 3a (the TOC image).
NR 35
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U2 198
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0001-4842
J9 ACCOUNTS CHEM RES
JI Accounts Chem. Res.
PD MAY
PY 2012
VL 45
IS 5
BP 696
EP 704
DI 10.1021/ar2002057
PG 9
WC Chemistry, Multidisciplinary
SC Chemistry
GA 941LS
UT WOS:000303965300002
PM 22292890
ER

PT J
AU McQuillan, B
   Carter, B
   Millard-Hasting, B
   Ayotte, K
   Jesinger, R
   Lichtenberger, J
AF McQuillan, B.
   Carter, B.
   Millard-Hasting, B.
   Ayotte, K.
   Jesinger, R.
   Lichtenberger, J.
TI The Interventricular Septum: A Multimodality Review of Anatomy and
   Pathology
SO AMERICAN JOURNAL OF ROENTGENOLOGY
LA English
DT Meeting Abstract
CT Annual Meeting of the American-Roentgen-Ray-Society
CY APR 29-MAY 04, 2012
CL Vancouver, CANADA
SP Amer Roentgen Ray Soc
C1 [McQuillan, B.; Millard-Hasting, B.; Ayotte, K.; Jesinger, R.; Lichtenberger, J.] David Grant US AF Med Ctr, Travis AFB, CA USA.
   [Carter, B.] Baylor Univ, Med Ctr, Dallas, TX USA.
EM brianfmcquillan@gmail.com
NR 0
TC 0
Z9 0
U1 0
U2 1
PU AMER ROENTGEN RAY SOC
PI RESTON
PA 1891 PRESTON WHITE DR, SUBSCRIPTION FULFILLMENT, RESTON, VA 22091 USA
SN 0361-803X
J9 AM J ROENTGENOL
JI Am. J. Roentgenol.
PD MAY
PY 2012
VL 198
IS 5
SU S
PG 3
WC Radiology, Nuclear Medicine & Medical Imaging
SC Radiology, Nuclear Medicine & Medical Imaging
GA 937OI
UT WOS:000303667400282
ER

PT J
AU Wiedenhoefer, J
   Harston, C
   James, B
AF Wiedenhoefer, J.
   Harston, C.
   James, B.
TI Breast MRI: An Alternative to Stereotactic Biopsy for Management of
   Developing Mammographic Asymmetries
SO AMERICAN JOURNAL OF ROENTGENOLOGY
LA English
DT Meeting Abstract
CT Annual Meeting of the American-Roentgen-Ray-Society
CY APR 29-MAY 04, 2012
CL Vancouver, CANADA
SP Amer Roentgen Ray Soc
C1 [Wiedenhoefer, J.] Wilford Hall USAF Med Ctr, Lackland AFB, TX 78236 USA.
   [Harston, C.] Lexington Clin, Lexington, KY USA.
   [James, B.] Eisenhower Army Med Ctr, Ft Gordon, GA USA.
EM chad.harston@gmail.com
NR 0
TC 0
Z9 0
U1 0
U2 0
PU AMER ROENTGEN RAY SOC
PI RESTON
PA 1891 PRESTON WHITE DR, SUBSCRIPTION FULFILLMENT, RESTON, VA 22091 USA
SN 0361-803X
J9 AM J ROENTGENOL
JI Am. J. Roentgenol.
PD MAY
PY 2012
VL 198
IS 5
SU S
PG 2
WC Radiology, Nuclear Medicine & Medical Imaging
SC Radiology, Nuclear Medicine & Medical Imaging
GA 937OI
UT WOS:000303667400245
ER

PT J
AU Manem, H
   Rajendran, J
   Rose, GS
AF Manem, Harika
   Rajendran, Jeyavijayan
   Rose, Garrett S.
TI Stochastic Gradient Descent Inspired Training Technique for a CMOS/Nano
   Memristive Trainable Threshold Gate Array
SO IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I-REGULAR PAPERS
LA English
DT Article
DE Digital integrated circuits; machine learning; memristor;
   nanoelectronics; neural networks; VLSI
ID LOGIC ELEMENTS MOBILES; CIRCUITS; ARCHITECTURE
AB Neuromorphic computing is an attractive avenue of research for processing and learning complex real-world data. With technology migration into nano and molecular scales several area and power efficient approaches to the design and implementation of artificial neural networks have been proposed. The discovery of the memristor has further enabled the realization of denser nanoscale logic and memory systems by facilitating the implementation of multilevel logic. Specifically, the innate reconfigurability of memristors can be exploited to realize synapses in artificial neural networks. This work focuses on the development of a variation-tolerant training methodology to efficiently reconfigure memristive synapses in a Trainable Threshold Gate Array (TTGA) system. The training process is inspired from the gradient descent machine learning algorithm commonly used to train artificial threshold neural networks, perceptrons. The design and CMOS/Nano implementation of the TTGA system from trainable perceptron based threshold gates is detailed and results are provided to showcase the training process and performance characteristics of the proposed system. Also shown are the results for training a 1T1M (1 Transistor and 1 Memristor) multilevel memristive memory and its performance characteristics.
C1 [Manem, Harika; Rajendran, Jeyavijayan] NYU, Polytech Inst, Dept Elect & Comp Engn, Brooklyn, NY 11201 USA.
   [Rose, Garrett S.] USAF, Informat Directorate, Res Lab, Griffiss AFB, NY 13441 USA.
RP Manem, H (reprint author), SUNY Albany, Coll Nanoscale Sci & Engn, Albany, NY 12203 USA.
EM hmanem01@students.poly.edu; jrajen01@students.poly.edu;
   garrett.rose@rl.af.mil
FU U.S. Air Force Research Laboratory (AFRL) [FA8750-09-2-0157]
FX Manuscript received September 02, 2011; revised December 08, 2011;
   accepted January 29, 2012. Date of current version May 09, 2012. The
   contractors acknowledge government support in the publication of this
   paper. This material is based upon work funded by the U.S. Air Force
   Research Laboratory (AFRL) under Contract No. FA8750-09-2-0157. Any
   opinions, findings, and conclusions or recommendations expressed in this
   material are those of the authors and do not necessarily reflect the
   views of AFRL. This paper was recommended by Associate Editor T. S.
   Lande.
NR 30
TC 5
Z9 6
U1 3
U2 14
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 1549-8328
EI 1558-0806
J9 IEEE T CIRCUITS-I
JI IEEE Trans. Circuits Syst. I-Regul. Pap.
PD MAY
PY 2012
VL 59
IS 5
SI SI
BP 1051
EP 1060
DI 10.1109/TCSI.2012.2190665
PG 10
WC Engineering, Electrical & Electronic
SC Engineering
GA 940MW
UT WOS:000303894700014
ER

PT J
AU Kang, S
   Brewer, G
   Sapkota, KR
   Pegg, IL
   Philip, J
AF Kang, Sungmu
   Brewer, Greg
   Sapkota, Keshab R.
   Pegg, Ian L.
   Philip, John
TI Electrical and Magnetic Properties of Higher Manganese Silicide
   Nanostructures
SO IEEE TRANSACTIONS ON NANOTECHNOLOGY
LA English
DT Article
DE CVD; nanostructured materials; semiconductor nanostructures; silicides
ID CRYSTAL-STRUCTURE; NANOWIRES; MN27SI47; MN4SI7
AB Higher manganese silicide, Mn15Si26, nanostructures were grown using CVD using a coordination compound precursor. These nanostructures exhibit p-type semiconducting behavior. They also exhibit a nonzero magnetic moment even at room temperature and the magnetic transition temperature appears to be near 330 K.
C1 [Kang, Sungmu; Sapkota, Keshab R.; Pegg, Ian L.; Philip, John] Catholic Univ Amer, Vitreous State Lab, Washington, DC 20064 USA.
   [Brewer, Greg] Catholic Univ Amer, Dept Chem, Washington, DC 20064 USA.
   [Sapkota, Keshab R.; Pegg, Ian L.; Philip, John] Catholic Univ Amer, Dept Phys, Washington, DC 20064 USA.
RP Kang, S (reprint author), USAF, Inst Technol, 2950 Hobson Way, Wright Patterson AFB, OH 45433 USA.
EM ksungmu@yahoo.com; brewer@cua.edu; 14sapkota@cardinalmail.cua.edu;
   ianp@vsl.cua.edu; philip@cua.edu
FU National Science Foundation (NSF) [ECCS-0845501, DMR-0922997]
FX This work was supported by the National Science Foundation (NSF) under
   Grant ECCS-0845501 and by the NSF-Major Research Instrumentation Program
   under Grant DMR-0922997. The review of this paper was arranged by
   Associate Editor G. Ramanath.
NR 26
TC 4
Z9 4
U1 1
U2 13
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 1536-125X
J9 IEEE T NANOTECHNOL
JI IEEE Trans. Nanotechnol.
PD MAY
PY 2012
VL 11
IS 3
BP 437
EP 440
DI 10.1109/TNANO.2011.2177471
PG 4
WC Engineering, Electrical & Electronic; Nanoscience & Nanotechnology;
   Materials Science, Multidisciplinary; Physics, Applied
SC Engineering; Science & Technology - Other Topics; Materials Science;
   Physics
GA 940MV
UT WOS:000303894600003
ER

PT J
AU Bernhardt, PA
   Ballenthin, JO
   Baumgardner, JL
   Bhatt, A
   Boyd, ID
   Burt, JM
   Caton, RG
   Coster, A
   Erickson, PJ
   Huba, JD
   Earle, GD
   Kaplan, CR
   Foster, JC
   Groves, KM
   Haaser, RA
   Heelis, RA
   Hunton, DE
   Hysell, DL
   Klenzing, JH
   Larsen, MF
   Lind, FD
   Pedersen, TR
   Pfaff, RF
   Stoneback, RA
   Roddy, PA
   Rodriquez, SP
   San Antonio, GS
   Schuck, PW
   Siefring, CL
   Selcher, CA
   Smith, SM
   Talaat, ER
   Thomason, JF
   Tsunoda, RT
   Varney, RH
AF Bernhardt, P. A.
   Ballenthin, J. O.
   Baumgardner, J. L.
   Bhatt, A.
   Boyd, I. D.
   Burt, J. M.
   Caton, R. G.
   Coster, A.
   Erickson, P. J.
   Huba, J. D.
   Earle, G. D.
   Kaplan, C. R.
   Foster, J. C.
   Groves, K. M.
   Haaser, R. A.
   Heelis, R. A.
   Hunton, D. E.
   Hysell, D. L.
   Klenzing, J. H.
   Larsen, M. F.
   Lind, F. D.
   Pedersen, T. R.
   Pfaff, R. F.
   Stoneback, R. A.
   Roddy, P. A.
   Rodriquez, S. P.
   San Antonio, G. S.
   Schuck, P. W.
   Siefring, C. L.
   Selcher, C. A.
   Smith, S. M.
   Talaat, E. R.
   Thomason, J. F.
   Tsunoda, R. T.
   Varney, R. H.
TI Ground and Space-Based Measurement of Rocket Engine Burns in the
   Ionosphere
SO IEEE TRANSACTIONS ON PLASMA SCIENCE
LA English
DT Article
DE Environmental factors; ionosphere; plasma measurements; plasma waves
ID ATMOSPHERIC MODIFICATION EXPERIMENT; F-REGION; SHUTTLE; DYNAMICS;
   RELEASE; ARECIBO; EXHAUST; PLUMES
AB On-orbit firings of both liquid and solid rocket motors provide localized disturbances to the plasma in the upper atmosphere. Large amounts of energy are deposited to ionosphere in the form of expanding exhaust vapors which change the composition and flow velocity. Charge exchange between the neutral exhaust molecules and the background ions (mainly O+) yields energetic ion beams. The rapidly moving pickup ions excite plasma instabilities and yield optical emissions after dissociative recombination with ambient electrons. Line-of-sight techniques for remote measurements rocket burn effects include direct observation of plume optical emissions with ground and satellite cameras, and plume scatter with UHF and higher frequency radars. Long range detection with HF radars is possible if the burns occur in the dense part of the ionosphere. The exhaust vapors initiate plasma turbulence in the ionosphere that can scatter HF radar waves launched from ground transmitters. Solid rocket motors provide particulates that become charged in the ionosphere and may excite dusty plasma instabilities. Hypersonic exhaust flow impacting the ionospheric plasma launches a low-frequency, electromagnetic pulse that is detectable using satellites with electric field booms. If the exhaust cloud itself passes over a satellite, in situ detectors measure increased ion-acoustic wave turbulence, enhanced neutral and plasma densities, elevated ion temperatures, and magnetic field perturbations. All of these techniques can be used for long range observations of plumes in the ionosphere. To demonstrate such long range measurements, several experiments were conducted by the Naval Research Laboratory including the Charged Aerosol Release Experiment, the Shuttle Ionospheric Modification with Pulsed Localized Exhaust experiments, and the Shuttle Exhaust Ionospheric Turbulence Experiments.
C1 [Bernhardt, P. A.; Huba, J. D.; Siefring, C. L.] USN, Res Lab, Div Plasma Phys, Washington, DC 20374 USA.
   [Ballenthin, J. O.; Caton, R. G.; Groves, K. M.; Hunton, D. E.; Pedersen, T. R.; Roddy, P. A.; Selcher, C. A.] USAF, Res Lab, Kirtland AFB, NM 87117 USA.
   [Baumgardner, J. L.; Smith, S. M.] Boston Univ, Ctr Space Phys, Boston, MA 02215 USA.
   [Bhatt, A.; Coster, A.; Erickson, P. J.; Foster, J. C.; Lind, F. D.] MIT, Haystack Observ, Westford, MA 01886 USA.
   [Boyd, I. D.; Burt, J. M.] Univ Michigan, Ann Arbor, MI 48109 USA.
   [Earle, G. D.; Haaser, R. A.; Heelis, R. A.; Klenzing, J. H.; Stoneback, R. A.] Univ Texas Dallas, Richardson, TX 75080 USA.
   [Kaplan, C. R.] USN, Res Lab, Lab Computat Phys & Fluid Dynam, Washington, DC 20374 USA.
   [Hysell, D. L.; Varney, R. H.] Cornell Univ, Ithaca, NY 14853 USA.
   [Larsen, M. F.] Clemson Univ, Dept Phys & Astron, Clemson, SC 29634 USA.
   [Pfaff, R. F.; Schuck, P. W.] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA.
   [Rodriquez, S. P.; San Antonio, G. S.; Thomason, J. F.] USN, Res Lab, Div Radar, Washington, DC 20374 USA.
   [Talaat, E. R.] Johns Hopkins Univ, Appl Phys Lab, Laurel, MD 20723 USA.
   [Tsunoda, R. T.] SRI Int, Menlo Pk, CA 94025 USA.
RP Bernhardt, PA (reprint author), USN, Res Lab, Div Plasma Phys, Washington, DC 20374 USA.
EM bern@ppd.nrl.navy.mil; jeffreyb@bu.edu; abhatt@haystack.mit.edu;
   ajc@haystack.mit.edu
RI Klenzing, Jeff/E-2406-2011; Larsen, Miguel/A-1079-2013; Pfaff,
   Robert/F-5703-2012; 
OI Klenzing, Jeff/0000-0001-8321-6074; Pfaff, Robert/0000-0002-4881-9715;
   Varney, Roger/0000-0002-5976-2638; Bhatt, Asti/0000-0002-8881-5348;
   Stoneback, Russell/0000-0001-7216-4336
FU Office of Naval Research; DoD; NRL; National Aeronautics and Space
   Administration
FX Work was supported by the Office of Naval Research. The CARE, SIMPLEX
   and SEITE Missions are supported by the DoD Space Test Program.; This
   research was supported by the NRL Base Program. The rocket engine burns
   were provided by the DoD STP with support from the National Aeronautics
   and Space Administration.
NR 36
TC 17
Z9 17
U1 5
U2 17
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 0093-3813
J9 IEEE T PLASMA SCI
JI IEEE Trans. Plasma Sci.
PD MAY
PY 2012
VL 40
IS 5
SI SI
BP 1267
EP 1286
DI 10.1109/TPS.2012.2185814
PN 1
PG 20
WC Physics, Fluids & Plasmas
SC Physics
GA 940LB
UT WOS:000303889900002
ER

PT J
AU Shamberger, PJ
   Reid, T
AF Shamberger, Patrick J.
   Reid, Timothy
TI Thermophysical Properties of Lithium Nitrate Trihydrate from (253 to
   353) K
SO JOURNAL OF CHEMICAL AND ENGINEERING DATA
LA English
DT Article
ID AQUEOUS-SOLUTIONS; HYDROGEN-BOND; LINO3.3H2O; ENTHALPY; DENSITY;
   SYSTEMS; FUSION
AB Lithium nitrate trihydrate is of interest as a thermal energy storage material, due to its large specific and volumetric enthalpy of fusion and its low melting temperature. Here, we report the thermophysical properties of solid and liquid lithium nitrate trihydrate at temperatures from (253 to 353) K and compare this compound to water and octadecane, two other potential thermal energy storage materials. Furthermore, we examine the lithium nitrate-water phase diagram and accurately determine the enthalpies of fusion and melting temperatures for lithium nitrate trihydrate, Delta H-fus, = (287 +/- 7) J.g(-1) and T-fus = 303.3 K, and the lithium nitrate trihydrate-lithium nitrate eutectic, Delta H-fus = (264 +/- 2) J.g(-1) and T-fus = 301.4 K.
C1 [Shamberger, Patrick J.; Reid, Timothy] USAF, Res Lab, Thermal Sci & Mat Branch, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA.
   [Reid, Timothy] Univ Dayton, Res Inst, Dayton, OH 45469 USA.
RP Shamberger, PJ (reprint author), USAF, Res Lab, Thermal Sci & Mat Branch, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA.
EM patrick.shamberger@wpafb.af.mil
RI Shamberger, Patrick/I-8999-2012; Shamberger, Patrick/C-4795-2014
OI Shamberger, Patrick/0000-0003-4190-2070; Shamberger,
   Patrick/0000-0002-8737-6064
FU Air Force Research Laboratory, Materials and Manufacturing Directorate
FX The authors thank the Air Force Research Laboratory, Materials and
   Manufacturing Directorate for providing necessary financial support to
   carry out the present work.
NR 36
TC 8
Z9 8
U1 2
U2 18
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 MAY
PY 2012
VL 57
IS 5
BP 1404
EP 1411
DI 10.1021/je3000469
PG 8
WC Thermodynamics; Chemistry, Multidisciplinary; Engineering, Chemical
SC Thermodynamics; Chemistry; Engineering
GA 939DA
UT WOS:000303786200006
ER

PT J
AU Barnes, M
AF Barnes, Matthew
TI Response: Re: Irritable Bowel Syndrome: A "Mesh" of a Situation
SO JOURNAL OF THE AMERICAN BOARD OF FAMILY MEDICINE
LA English
DT Letter
C1 USAF, Colorado Springs, CO 80840 USA.
RP Barnes, M (reprint author), USAF, Colorado Springs, CO 80840 USA.
EM Matgbarnes@gmail.com
NR 0
TC 0
Z9 0
U1 0
U2 0
PU AMER BOARD FAMILY MEDICINE
PI LEXINGTON
PA 2228 YOUNG DR, LEXINGTON, KY 40505 USA
SN 1557-2625
J9 J AM BOARD FAM MED
JI J. Am. Board Fam. Med.
PD MAY-JUN
PY 2012
VL 25
IS 3
BP 399
EP 399
DI 10.3122/jabfm.2012.03.120040
PG 1
WC Primary Health Care; Medicine, General & Internal
SC General & Internal Medicine
GA 939KY
UT WOS:000303810600023
ER

PT J
AU Katoch, J
   Kim, SN
   Kuang, ZF
   Farmer, BL
   Nalk, RR
   Tatulian, SA
   Ishigami, M
AF Katoch, Jyoti
   Kim, Sang Nyon
   Kuang, Zhifeng
   Farmer, Barry L.
   Nalk, Rajesh R.
   Tatulian, Suren A.
   Ishigami, Masa
TI Structure of a Peptide Adsorbed on Graphene and Graphite
SO NANO LETTERS
LA English
DT Article
DE Graphene; functionalization; phage displayed peptides; atomic force
   microscopy; Raman spectroscopy; infrared spectroscopy; molecular
   dynamics simulation
ID TRANSFORM INFRARED-SPECTROSCOPY; SECONDARY STRUCTURE; MEMBRANE-PROTEINS;
   SIMULATION; HELIX
AB Noncovalent functionalization of graphene using peptides is a promising method for producing novel sensors with high sensitivity and selectivity. Here we perform atomic force microscopy, Raman spectroscopy, infrared spectroscopy, and molecular dynamics simulations to investigate peptide-binding behavior to graphene and graphite. We studied a dodecamer peptide identified with phage display to possess affinity for graphite. Optical spectroscopy reveals that the peptide forms secondary structures both in powder form and in an aqueous medium. The dominant structure in the powder form is a-helix, which undergoes a transition to a distorted helical structure in aqueous solution. The peptide forms a complex reticular structure upon adsorption on graphene and graphite, having a helical conformation different from alpha-helix due to its interaction with the surface. Our observation is consistent with our molecular dynamics calculations, and our study paves the way for rational functionalization of graphene using biomolecules with defined structures and, therefore, functionalities.
C1 [Katoch, Jyoti; Tatulian, Suren A.; Ishigami, Masa] Univ Cent Florida, Dept Phys, Orlando, FL 32816 USA.
   [Katoch, Jyoti; Ishigami, Masa] Univ Cent Florida, Nanosci Technol Ctr, Orlando, FL 32816 USA.
   [Kim, Sang Nyon; Kuang, Zhifeng; Farmer, Barry L.; Nalk, Rajesh R.] USAF, Res Lab, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA.
RP Katoch, J (reprint author), Univ Cent Florida, Dept Phys, Orlando, FL 32816 USA.
OI Katoch, Jyoti/0000-0002-3678-1780
FU National Science Foundation [0955625]; Air Force Office of Scientific
   Research
FX This work is based on research supported by the National Science
   Foundation under Grant No. 0955625 (J.K. and M.I.), by the Summer
   Faculty Fellowship Program of the Air Force Office of Scientific
   Research (M.I.), and by the Air Force Office of Scientific Research
   (R.N.).
NR 30
TC 57
Z9 57
U1 15
U2 136
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 2012
VL 12
IS 5
BP 2342
EP 2346
DI 10.1021/nl300286k
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 937XE
UT WOS:000303696400029
PM 22471315
ER

PT J
AU Chen, WB
   Nelson, RL
   Zhan, QW
AF Chen, Weibin
   Nelson, Robert L.
   Zhan, Qiwen
TI Efficient miniature circular polarization analyzer design using hybrid
   spiral plasmonic lens
SO OPTICS LETTERS
LA English
DT Article
AB The spin dependence of the focusing behavior of a spiral slot plasmonic lens can be utilized for a miniature circular polarization analyzer. However, the azimuthal polarization component of the incident circular polarization does not contribute to surface plasmon excitation and focusing because it is TE polarized with respect to the spiral slot. In this Letter, a hybrid metallic lens that consists of alternating spiral triangle array and spiral slot is designed to improve the plasmonic coupling efficiency. The spiral triangle array is responsible for coupling the azimuthal polarization component into surface plasmon. Numerical studies show that the field enhancement at the focus and power conversion efficiency can be increased by 39.53% and 94.69% compared to that of pure spiral slot plasmonic lens. (C) 2012 Optical Society of America
C1 [Chen, Weibin; Zhan, Qiwen] Univ Dayton, Electroopt Program, Dayton, OH 45469 USA.
   [Nelson, Robert L.] USAF, Res Lab, Wright Patterson AFB, OH 45433 USA.
RP Chen, WB (reprint author), Univ Dayton, Electroopt Program, 300 Coll Pk, Dayton, OH 45469 USA.
EM wchen2@udayton.edu
FU U.S. Air Force Research Laboratories
FX The authors thankfully acknowledge the support from the U.S. Air Force
   Research Laboratories through the Metamaterials Program.
NR 11
TC 21
Z9 21
U1 4
U2 25
PU OPTICAL SOC AMER
PI WASHINGTON
PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA
SN 0146-9592
J9 OPT LETT
JI Opt. Lett.
PD MAY 1
PY 2012
VL 37
IS 9
BP 1442
EP 1444
PG 3
WC Optics
SC Optics
GA 937MI
UT WOS:000303662200017
PM 22555698
ER

PT J
AU Thirumalai, RVKG
   Krishnan, B
   Davydov, AV
   Merrett, JN
   Koshka, Y
AF Thirumalai, Rooban Venkatesh K. G.
   Krishnan, Bharat
   Davydov, Albert V.
   Merrett, J. Neil
   Koshka, Yaroslav
TI Growth on Differently Oriented Sidewalls of SiC Mesas As a Way of
   Achieving Well-Aligned SiC Nanowires
SO CRYSTAL GROWTH & DESIGN
LA English
DT Article
ID SILICON-CARBIDE NANOWIRES; SENSORS
AB Several different growth directions of SiC nanowires (NWs) determined by the substrate surface crystallographic orientation were achieved by conducting vapor liquid solid growth on the top surfaces and the sidewalls of the 4H-SiC mesas. When substrate. dependent (i.e., epitaxial) growth was ensured, six possible crystallographic orientations of 3C-SiC NW axis with respect to the 4H-SiC substrate were realized. They all were at 20 degrees with respect to the substrate c plane, and their projections on the c plane corresponded to one of the six equivalent < 10 (1) over bar0 > crystallographic directions. All six orientations were obtained simultaneously when growing on the (0001) top surface of the 4H-SiC wafer or on the mesa tops. In contrast, no more than two NW orientations coexisted when grown on any particular crystallographic plane of a mesa sidewall. In particular, the {10 (1) over bar0} mesa sidewall plane resulted in only one NW orientation, thereby producing well-aligned NW arrays desirable for device applications.
C1 [Thirumalai, Rooban Venkatesh K. G.; Krishnan, Bharat; Koshka, Yaroslav] Mississippi State Univ, Dept Elect & Comp Engn, Mississippi State, MS 39762 USA.
   [Davydov, Albert V.] NIST, Gaithersburg, MD 20899 USA.
   [Merrett, J. Neil] USAF, Res Lab, Wright Patterson AFB, OH 45433 USA.
RP Koshka, Y (reprint author), Mississippi State Univ, Dept Elect & Comp Engn, Mississippi State, MS 39762 USA.
EM ykoshka@ece.msstate.edu
RI Davydov, Albert/F-7773-2010
OI Davydov, Albert/0000-0003-4512-2311
NR 25
TC 6
Z9 6
U1 1
U2 6
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1528-7483
J9 CRYST GROWTH DES
JI Cryst. Growth Des.
PD MAY
PY 2012
VL 12
IS 5
BP 2221
EP 2225
DI 10.1021/cg201398z
PG 5
WC Chemistry, Multidisciplinary; Crystallography; Materials Science,
   Multidisciplinary
SC Chemistry; Crystallography; Materials Science
GA 933MN
UT WOS:000303366000013
ER

PT J
AU McHugh, TE
   Beckley, L
   Bailey, D
   Gorder, K
   Dettenmaier, E
   Rivera-Duarte, I
   Brock, S
   MacGregor, IC
AF McHugh, Thomas E.
   Beckley, Lila
   Bailey, Danielle
   Gorder, Kyle
   Dettenmaier, Erik
   Rivera-Duarte, Ignacio
   Brock, Samuel
   MacGregor, Ian C.
TI Evaluation of Vapor Intrusion Using Controlled Building Pressure
SO ENVIRONMENTAL SCIENCE & TECHNOLOGY
LA English
DT Article
ID INDOOR AIR
AB The use of measured volatile organic chemical (VOC) concentrations in indoor air to evaluate vapor intrusion is complicated by (i) indoor sources of the same VOCs and (ii) temporal variability in vapor intrusion. This study evaluated the efficacy of utilizing induced negative and positive building pressure conditions during a vapor intrusion investigation program to provide an improved understanding of the potential for vapor intrusion. Pressure control was achieved in five of six buildings where the investigation program was tested. For these five buildings, the induced pressure differences were sufficient to control the flow of soil gas through the building foundation. A comparison of VOC concentrations in indoor air measured during the negative and positive pressure test conditions was sufficient to determine whether vapor intrusion was the primary source of VOCs in indoor air at these buildings. The study results indicate that sampling under controlled building pressure can help minimize ambiguity caused by both indoor sources of VOCs and temporal variability in vapor intrusion.
C1 [McHugh, Thomas E.; Beckley, Lila; Bailey, Danielle] GSI Environm Inc, Houston, TX USA.
   [Rivera-Duarte, Ignacio] Space & Naval Warfare Syst Ctr Pacific, San Diego, CA USA.
   [Brock, Samuel] USAF, Ctr Engn & Environm, San Antonio, TX USA.
   [MacGregor, Ian C.] Battelle Mem Inst, Columbus, OH 43201 USA.
RP McHugh, TE (reprint author), GSI Environm Inc, Houston, TX USA.
EM temchugh@gsi-net.com
FU U.S. Department of Defense [ER-200707]; Navy's Environmental
   Sustainability Development to Integration (NESDI) Program
   [N66001-07-D-0108]
FX This research was supported in part by the U.S. Department of Defense,
   through Environmental Security Technology Certification Program (ESTCP)
   Project ER-200707 and in part by the Navy's Environmental Sustainability
   Development to Integration (NESDI) Program through Contract
   N66001-07-D-0108. We thank Dr. Paul Johnson and his research group at
   Arizona State University for providing access to the ASU research house.
NR 11
TC 18
Z9 18
U1 0
U2 10
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0013-936X
J9 ENVIRON SCI TECHNOL
JI Environ. Sci. Technol.
PD MAY 1
PY 2012
VL 46
IS 9
BP 4792
EP 4799
DI 10.1021/es204483g
PG 8
WC Engineering, Environmental; Environmental Sciences
SC Engineering; Environmental Sciences & Ecology
GA 933GO
UT WOS:000303348800020
PM 22486634
ER

PT J
AU Boissonnault, WG
   Ross, MD
AF Boissonnault, William G.
   Ross, Michael D.
TI Physical Therapists Referring Patients to Physicians: A Review of Case
   Reports and Series
SO JOURNAL OF ORTHOPAEDIC & SPORTS PHYSICAL THERAPY
LA English
DT Review
DE differential diagnosis; direct access; examination; imaging; physical
   therapy; screening
ID LOW-BACK-PAIN; UPPER EXTREMITY SYMPTOMS; CAUDA-EQUINA SYNDROME;
   DIFFERENTIAL-DIAGNOSIS; STRESS-FRACTURE; DIRECT-ACCESS; DECISION-MAKING;
   SHOULDER PAIN; NECK PAIN; KNEE PAIN
AB STUDY DESIGN: Descriptive.
   BACKGROUND: An important role for physical therapists in the healthcare delivery system is to recognize when patient referral to a physician or other healthcare provider is indicated. Few studies exist describing physical therapists' evaluative and diagnostic processes leading to patient referral to a physician.
   OBJECTIVE: To summarize published patient case reports that described physical therapist/patient episodes of care that resulted in the referral of the patient to a physician and a subsequent diagnosis of medical disease.
   METHODS: A literature search identified 78 case reports describing physical therapist referral of patients to physicians with subsequent diagnosis of a medical condition. Two evaluators reviewed the cases and summarized (1) how and when patients accessed physical therapy services, (2) timing of patient referral to a physician, (3) resultant medical diagnoses, (4) physical therapists' role in referral of patients for diagnostic testing, and (5) relevant patient symptom description, health history, review of systems, and physical examination findings.
   RESULTS: Fifty-eight (74.4%) of 78 patients had been referred to a physical therapist by their physician, while the remaining 20 patients accessed physical therapy services via direct access. The patients' primary presenting symptoms included pain (n = 60), weakness (n = 4), tingling/numbness (n = 2), or a combination (n = 12). Patient referrals to a physician occurred at the initial physical therapy session in 58 (74.4%) of 78 cases. A majority of patient referrals to a physician (n = 65) were related to primary presenting symptoms, including manifestations inconsistent with physician diagnosis, recent worsening without cause, unusual accompanying symptoms such as fatigue and/or weakness, and inadequate response to treatment. Resultant diagnoses included neuromusculoskeletal disorders (n = 53; fractures and tumors most common), visceral disorders (n = 14; cardiovascular involvement most common), and medication-related disorders (n = 3).
   CONCLUSIONS: This review of published patient case reports provides numerous examples of physical therapists using effective multifactorial screening strategies for referred and direct-access patients, leading to timely patient referrals to physicians. The therapist-initiated patient referral to a physician led to subsequent diagnosis of a wide range of conditions and pathological processes. J Orthop Sports Phys Ther 2012;42(5):446-454, Epub 25 January 2012. doi:10.2519/jospt.2012.3890
C1 [Boissonnault, William G.] Univ Wisconsin, Dept Orthopaed & Rehabil, Madison, WI 53706 USA.
   [Ross, Michael D.] USAF, Phys Med Training Programs, Ft Sam Houston, TX USA.
RP Boissonnault, WG (reprint author), Univ Wisconsin, Dept Orthopaed & Rehabil, 1300 Univ Ave,5190 MSC, Madison, WI 53706 USA.
EM boissonnaultw@pt.wisc.edu
NR 86
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U1 0
U2 13
PU J O S P T,
PI ALEXANDRIA
PA 1111 NORTH FAIRFAX ST, STE 100, ALEXANDRIA, VA 22314-1436 USA
SN 0190-6011
J9 J ORTHOP SPORT PHYS
JI J. Orthop. Sports Phys. Ther.
PD MAY
PY 2012
VL 42
IS 5
BP 446
EP 454
DI 10.2519/jospt.2012.3890
PG 9
WC Orthopedics; Rehabilitation; Sport Sciences
SC Orthopedics; Rehabilitation; Sport Sciences
GA 933MT
UT WOS:000303366700006
PM 22282166
ER

PT J
AU Dao, E
   Kelley, MC
   Hysell, DL
   Retterer, JM
   Su, YJ
   Pfaff, RF
   Roddy, PA
   Ballenthin, JO
AF Dao, E.
   Kelley, M. C.
   Hysell, D. L.
   Retterer, J. M.
   Su, Y. -J.
   Pfaff, R. F.
   Roddy, P. A.
   Ballenthin, J. O.
TI On the distribution of ion density depletion along magnetic field lines
   as deduced using C/NOFS
SO RADIO SCIENCE
LA English
DT Article
ID EQUATORIAL SPREAD-F; MODEL; IONOSPHERE; SATELLITE
AB To investigate ion density depletion along magnetic field lines, we compare in situ-measured ion density fluctuations as seen from C/NOFS and compare them to the field-line-integrated depletion of the whole bubble as inferred from electric field measurements. Results show that, within C/NOFS' range, local measurement of the normalized density depletion, Delta n/n(0), near the apex may be far less than at other points on the same field line. We argue that the distribution of Delta n/n(0) is a weighted distribution concentrated at latitudes of the Appleton anomalies and becomes more heavily weighted the closer the field-aligned bubble rises to the peak of the anomalies. A three-dimensional simulation of an ionospheric bubble verifies our arguments.
C1 [Dao, E.; Kelley, M. C.] Cornell Univ, Sch Elect & Comp Engn, Ithaca, NY 14853 USA.
   [Hysell, D. L.] Cornell Univ, Dept Earth & Atmospher Sci, Ithaca, NY 14853 USA.
   [Retterer, J. M.] Boston Coll, Inst Sci Res, Chestnut Hill, MA 02467 USA.
   [Su, Y. -J.; Roddy, P. A.; Ballenthin, J. O.] USAF, Res Lab, Space Vehicles Directorate, Kirtland AFB, NM 87117 USA.
   [Pfaff, R. F.] NASA, Goddard Space Flight Ctr, Extraterr Phys Lab, Greenbelt, MD 20771 USA.
RP Dao, E (reprint author), Cornell Univ, Sch Elect & Comp Engn, Ithaca, NY 14853 USA.
EM mck13@cornell.edu
RI Pfaff, Robert/F-5703-2012
OI Pfaff, Robert/0000-0002-4881-9715
FU National Aeronautics and Space Administration [NNH09AK05I, NNH09AM20I];
   Office of Naval Research [N00014-09-1-0975]; Air Force Research
   Laboratory; Department of Defense; Naval Research Laboratory; Aerospace
   Corporation
FX The C/NOFS mission is supported by the Air Force Research Laboratory,
   the Department of Defense Space Test Program, the National Aeronautics
   and Space Administration, the Naval Research Laboratory, and the
   Aerospace Corporation. The analysis was supported in part by NASA grants
   NNH09AK05I and NNH09AM20I to the Air Force Research Laboratory. Work at
   Cornell was funded by the Office of Naval Research under grant
   N00014-09-1-0975.
NR 17
TC 2
Z9 2
U1 0
U2 2
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 0048-6604
EI 1944-799X
J9 RADIO SCI
JI Radio Sci.
PD MAY 1
PY 2012
VL 47
AR RS3001
DI 10.1029/2011RS004967
PG 8
WC Astronomy & Astrophysics; Geochemistry & Geophysics; Meteorology &
   Atmospheric Sciences; Remote Sensing; Telecommunications
SC Astronomy & Astrophysics; Geochemistry & Geophysics; Meteorology &
   Atmospheric Sciences; Remote Sensing; Telecommunications
GA 937QN
UT WOS:000303673300002
ER

PT J
AU Jennings, A
   Black, J
AF Jennings, Alan
   Black, Jonathan
TI Texture-Based Photogrammetry Accuracy on Curved Surfaces
SO AIAA JOURNAL
LA English
DT Article; Proceedings Paper
CT 11th AIAA Gossamer Systems Forum
CY APR 12-15, 2010
CL Orlando, FL
SP AIAA
ID VIDEOGRAMMETRY; UNCERTAINTY; SYSTEM
AB Photogrammetry is a preferred technique for noncontact measurement of flexible structures, such as large membranes and flapping-wing vehicles. Traditionally, discrete features are triangulated between photos. New techniques use the local texture of a surface to match random speckle among images. Texture-based photogrammetry allows for higher resolution surfaces, and this paper tests if the precision is similar to traditional photogrammetry. Test surfaces provide known, rounded profiles used to compare surface reconstructions. Many images are taken of an object with a projected texture, and the depth error is used to quantify the accuracy of the results. Results on surface meshes from 800 to 2500 points show accuracy on the order of 1:2000, or nearly that of one pixel. Camera locations had a surprisingly minor effect on surface quality. There is a slight correlation of more parallel views to more points on the surface. To show that the technique extends to practical use, results are shown for a flapping cycle of a membrane wing. Dense surface meshes are important for higher fidelity models in computational fluid dynamics and finite element analysis.
C1 [Black, Jonathan] USAF, Inst Technol, AIAA, Wright Patterson AFB, OH 45433 USA.
   [Jennings, Alan] USAF, Inst Technol, Dept Aeronaut & Astronaut, Wright Patterson AFB, OH 45433 USA.
RP Black, J (reprint author), USAF, Inst Technol, AIAA, Wright Patterson AFB, OH 45433 USA.
EM jonathan.black@afit.edu
RI Black, Jonathan/R-4875-2016
OI Black, Jonathan/0000-0001-9315-3994
NR 40
TC 6
Z9 6
U1 1
U2 10
PU AMER INST AERONAUTICS  ASTRONAUTICS
PI RESTON
PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091-4344 USA
SN 0001-1452
J9 AIAA J
JI AIAA J.
PD MAY
PY 2012
VL 50
IS 5
BP 1060
EP 1071
DI 10.2514/1.J050956
PG 12
WC Engineering, Aerospace
SC Engineering
GA 933MK
UT WOS:000303365700006
ER

PT J
AU Siddiqui, JJ
   Phillips, JD
   Leedy, K
   Bayraktaroglu, B
AF Siddiqui, Jeffrey J.
   Phillips, Jamie D.
   Leedy, Kevin
   Bayraktaroglu, Burhan
TI Bias-Temperature-Stress Characteristics of ZnO/HfO2 Thin-Film
   Transistors
SO IEEE TRANSACTIONS ON ELECTRON DEVICES
LA English
DT Article
DE Bias-temperature-stress (BTS); hafnium oxide (HfO2); negative bias
   temperature instability (NBTI); positive bias temperature instability
   (PBTI); zinc oxide (ZnO)
ID OXIDE SEMICONDUCTOR; INSTABILITY; PERFORMANCE; MECHANISMS; TFTS
AB Positive and negative bias temperature instabilities (PBTI and NBTI) of ZnO/HfO2 thin-film transistors are investigated by the bias-temperature-stress test method. PBTI results show a linear shift in threshold voltage in the positive voltage direction with a magnitude that semilogarithmically increases with time. This is indicative of dielectric charge trapping. Trends with stress voltage and temperature also support this conclusion. NBTI characteristics include threshold voltage shifts in the negative voltage direction, reduced channel mobility, and an increased subthreshold slope with temperature. The observed behavior suggests that defect state creation at the interface is the dominant mechanism responsible for NBTI.
C1 [Siddiqui, Jeffrey J.; Phillips, Jamie D.] Univ Michigan, Dept Elect Engn & Comp Sci, Ann Arbor, MI 48109 USA.
   [Leedy, Kevin; Bayraktaroglu, Burhan] USAF, Res Lab, AFRL, RYDD,WPAFB, Dayton, OH 45433 USA.
RP Siddiqui, JJ (reprint author), Univ Michigan, Dept Elect Engn & Comp Sci, Ann Arbor, MI 48109 USA.
EM jjameel@umich.edu
RI Phillips, Jamie/E-9394-2010
FU U.S. Department of Defense Science, Mathematics, and Research
FX Manuscript received November 7, 2011; revised January 13, 2012; accepted
   February 8, 2012. Date of publication April 4, 2012; date of current
   version April 25, 2012. The work of J. J. Siddiqui was supported by the
   U.S. Department of Defense Science, Mathematics, and Research for
   Transformation Scholarship. The review of this paper was arranged by
   Editor J. S. Suehle.
NR 24
TC 7
Z9 7
U1 0
U2 20
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 0018-9383
J9 IEEE T ELECTRON DEV
JI IEEE Trans. Electron Devices
PD MAY
PY 2012
VL 59
IS 5
BP 1488
EP 1493
DI 10.1109/TED.2012.2189048
PG 6
WC Engineering, Electrical & Electronic; Physics, Applied
SC Engineering; Physics
GA 931FY
UT WOS:000303202900035
ER

PT J
AU McClung, AJW
   Tandon, GP
   Baur, JW
AF McClung, Amber J. W.
   Tandon, Gyaneshwar P.
   Baur, Jeffery W.
TI Strain rate- and temperature-dependent tensile properties of an
   epoxy-based, thermosetting, shape memory polymer (Veriflex-E)
SO MECHANICS OF TIME-DEPENDENT MATERIALS
LA English
DT Article
DE Shape memory polymer; Digital image correlation; Strain rate dependence;
   Temperature dependence; Poisson's ratio
ID MECHANICAL RESPONSE; BEHAVIOR; DEFORMATION; MODEL; RELAXATION
AB In this study, the inelastic deformation behavior of an epoxy-based, thermally triggered shape memory polymer resin, known as Veriflex-E, was investigated. The experimental program was designed to explore the influence of strain rate on monotonic loading at various temperatures which is needed to establish the design space of SMPs in load bearing applications. Thermally actuated shape memory polymers can be thought of as having two phases separated by the glass transition temperature (T (g) ). At temperatures below the T (g) , Veriflex-E exhibits a high elastic modulus and positive, non-linear strain rate sensitivity in monotonic loading. The Poisson's ratio at room temperature is independent of the strain rate, but dependent upon the strain magnitude. As the temperature is increased, the strain rate sensitivity in monotonic loading decreases. Well above the T (g) , the elastic modulus drops by several orders of magnitude. In this high temperature region, the material achieves strain levels well above 100% and Poisson's ratio is constant at 0.5 regardless of strain rate or strain magnitude.
C1 [McClung, Amber J. W.; Tandon, Gyaneshwar P.; Baur, Jeffery W.] USAF, Res Lab, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA.
   [McClung, Amber J. W.] CNR, Washington, DC 20001 USA.
   [Tandon, Gyaneshwar P.] Univ Dayton, Res Inst, Dayton, OH 45469 USA.
RP McClung, AJW (reprint author), USAF, Res Lab, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA.
EM amber.mcclung.ctr@wpafb.af.mil
NR 21
TC 20
Z9 20
U1 1
U2 37
PU SPRINGER
PI DORDRECHT
PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS
SN 1385-2000
EI 1573-2738
J9 MECH TIME-DEPEND MAT
JI Mech. Time-Depend. Mater.
PD MAY
PY 2012
VL 16
IS 2
BP 205
EP 221
DI 10.1007/s11043-011-9148-7
PG 17
WC Mechanics; Materials Science, Characterization & Testing
SC Mechanics; Materials Science
GA 929JA
UT WOS:000303055900006
ER

PT J
AU Thomas, JT
   Roberts, HW
   Diaz, L
   Bradley, TG
   Berzins, DW
AF Thomas, J. T.
   Roberts, H. W.
   Diaz, L.
   Bradley, T. G.
   Berzins, D. W.
TI Effect of light-cure initiation time on polymerization efficiency and
   orthodontic bond strength with a resin-modified glass-ionomer
SO ORTHODONTICS & CRANIOFACIAL RESEARCH
LA English
DT Article
DE delayed light polymerization; resin-modified glass-ionomer; shear bond
   strength; thermal analysis
ID CEMENTS; ADHESIVE; WATER; DEGRADATION; DENTISTRY
AB Structured Abstract Objectives The polymerization and acidbase reactions in resin-modified glass-ionomers (RMGI) are thought to compete with and inhibit one another. To examine the effect of visible light-cure (VLC) delay on the polymerization efficiency and orthodontic bond strength of a dual-cured RMGI. Setting and Sample Population The Orthodontics Graduate Program at Marquette University. An in vitro study utilizing 72 freshly extracted human bicuspid teeth. Materials and Methods A RMGI light-cured immediately, 2.5, 5, or 10 min after mixing comprised the experimental groups. Isothermal and dynamic temperature scan differential scanning calorimetry (DSC) analysis of the RMGI was performed to determine extents of VLC polymerization and acidbase reaction exotherms. Human premolars (n = 18/group) were bonded with the RMGI. Shear bond strength and adhesive remnant index (ARI) scores were determined. Results Differential scanning calorimetry results showed the 10-min-delay RMGI group experienced significantly (p < 0.05) lower VLC polymerization compared with the other groups. Acidbase reaction exotherms were undetected in all groups except the 10-min delay group. No significant differences (p > 0.05) were noted among the groups for mean shear bond strength. A chi-square test showed no significant difference (p = 0.428) in ARI scores between groups. Conclusions Delay in light-curing may reduce polymerization efficiency and alter the structure of the RMGI, but orthodontic shear bond strength does not appear to be compromised.
C1 [Berzins, D. W.] Marquette Univ, Dept Gen Dent Sci, Sch Dent, Milwaukee, WI 53201 USA.
   [Thomas, J. T.; Bradley, T. G.] Marquette Univ, Dept Dev Sci, Sch Dent, Milwaukee, WI 53201 USA.
   [Roberts, H. W.] USAF, Biloxi, MS USA.
RP Berzins, DW (reprint author), Marquette Univ, Dept Gen Dent Sci, Sch Dent, 113A Wehr Phys Bldg,POB 1881, Milwaukee, WI 53201 USA.
EM david.berzins@marquette.edu
NR 28
TC 1
Z9 1
U1 1
U2 7
PU WILEY-BLACKWELL
PI MALDEN
PA COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA
SN 1601-6335
J9 ORTHOD CRANIOFAC RES
JI Orthod. Craniofac. Res.
PD MAY
PY 2012
VL 15
IS 2
BP 124
EP 134
DI 10.1111/j.1601-6343.2011.01531.x
PG 11
WC Dentistry, Oral Surgery & Medicine
SC Dentistry, Oral Surgery & Medicine
GA 929HQ
UT WOS:000303052300006
PM 22515188
ER

PT J
AU Rybalko, M
   Loth, E
   Lankford, D
AF Rybalko, Michael
   Loth, Eric
   Lankford, Dennis
TI A Lagrangian particle random walk model for hybrid RANS/LES turbulent
   flows
SO POWDER TECHNOLOGY
LA English
DT Article
DE Multi-phase; Continuous random walk; Hybrid RANS/LES; CFD
ID LARGE-EDDY SIMULATION; DISPERSION; VALIDATION; DIFFUSION; MOTION
AB A continuous random walk (CRW) turbulent diffusion model was adapted for Lagrangian particles within gas flowfields simulated by hybrid RANS/LES methodologies. The methodology was designed to model all the particle diffusion in RANS regions and model only the sub-grid diffusion in LES regions. In the RANS approach, the mean flowfield and the turbulent time- and length-scales are obtained with a k-omega (Menter SST) turbulence model. These values are used with a discrete stochastic equation to compute instantaneous gas velocity along an individual particle trajectory. Experimental results for turbulent diffusion of particles in a homogeneous wake flow were first used to calibrate the RANS model. The stochastic diffusion model was then extended to utilize the Nichols-Nelson k-omega hybrid RANS/LES turbulence model in the unsteady three-dimensional wake of a cylinder. In particular, the flow at a Mach number of 0.1 and Reynolds number (Re-D) of 800 was computed with a 5th-order upwind-biased scheme. The discrete stochastic equation was used to compute sub-grid fluctuations, which could be added to the resolved velocity field, and specifically took into account combined effects of particle inertia and non-homogeneous turbulence. The combination of resolved diffusion and sub-grid diffusion compared quite reasonably with diffusion based on Direct Numerical Simulation of the Navier-Stokes equations. The results indicate that eddy-crossing effects and inertia-based drift corrections can be critical, even when most of the kinetic energy is captured with the resolved-scales of an LES approach. (C) 2012 Elsevier B.V. All rights reserved.
C1 [Rybalko, Michael] Univ Illinois, Dept Aerosp Engn, Urbana, IL USA.
   [Loth, Eric] Univ Virginia, Charlottesville, VA 22904 USA.
   [Lankford, Dennis] Arnold Engn Dev Ctr, Arnold Afb, TN 37389 USA.
RP Rybalko, M (reprint author), Univ Illinois, Dept Aerosp Engn, 104 S Wright St, Urbana, IL USA.
EM rybalko@illinois.edu; loth@virginia.edu; dennis.lankford@arnold.afmil
RI Loth, Eric/C-5805-2008
FU Aerospace Testing Alliance at Arnold Engineering Development Center
   [ATA-07-08]
FX The financial support of the Aerospace Testing Alliance at Arnold
   Engineering Development Center under sub-contract ATA-07-08 is
   gratefully acknowledged. The assistance of Mr. James Kersey and Dr. Sang
   Lee is also greatly appreciated.
NR 21
TC 6
Z9 7
U1 0
U2 9
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0032-5910
EI 1873-328X
J9 POWDER TECHNOL
JI Powder Technol.
PD MAY
PY 2012
VL 221
SI SI
BP 105
EP 113
DI 10.1016/j.powtec.2011.12.042
PG 9
WC Engineering, Chemical
SC Engineering
GA 931LV
UT WOS:000303222300012
ER

PT J
AU Mena, R
   Pemberton, W
   Beal, W
AF Mena, RaJah
   Pemberton, Wendy
   Beal, William
TI EMERGENCY RESPONSE HEALTH PHYSICS
SO HEALTH PHYSICS
LA English
DT Article
DE operational topics; accidents, power reactor; emergencies, radiological;
   emergency planning
AB Health physics is an important discipline with regard to understanding the effects of radiation on human health. This paper aims to illustrate the unique challenges presented to the health physicist or analyst of radiological data in a large-scale emergency. Health Phys. 102(5):542-548; 2012
C1 [Mena, RaJah; Pemberton, Wendy] Natl Secur Technol LLC, Remote Sensing Lab Nellis, Las Vegas, NV 89193 USA.
   [Beal, William] Remote Sensing Lab Andrews, Andrews AFB, MD 20762 USA.
RP Mena, R (reprint author), Natl Secur Technol LLC, Remote Sensing Lab Nellis, POB 98521, Las Vegas, NV 89193 USA.
EM menarm@nv.doe.gov
FU U.S. Department of Energy [DE-AC52-06NA25946]
FX This manuscript has been authored by National Security Technologies,
   LLC, under Contract No. DE-AC52-06NA25946 with the U.S. Department of
   Energy. The United States Government retains and the publisher, by
   accepting the article for publication, acknowledges that the United
   States Government retains a non-exclusive, paid-up, irrevocable,
   world-wide license to publish or reproduce the published form of this
   manuscript, or allow others to do so, for United States Government
   purposes.
NR 0
TC 0
Z9 0
U1 0
U2 3
PU LIPPINCOTT WILLIAMS & WILKINS
PI PHILADELPHIA
PA 530 WALNUT ST, PHILADELPHIA, PA 19106-3621 USA
SN 0017-9078
EI 1538-5159
J9 HEALTH PHYS
JI Health Phys.
PD MAY
PY 2012
VL 102
IS 5
BP 542
EP 548
DI 10.1097/HP.0b013e31824cf35b
PG 7
WC Environmental Sciences; Public, Environmental & Occupational Health;
   Nuclear Science & Technology; Radiology, Nuclear Medicine & Medical
   Imaging
SC Environmental Sciences & Ecology; Public, Environmental & Occupational
   Health; Nuclear Science & Technology; Radiology, Nuclear Medicine &
   Medical Imaging
GA 925VG
UT WOS:000302789300010
PM 22469932
ER

PT J
AU Pemberton, W
   Mena, R
   Beal, W
AF Pemberton, Wendy
   Mena, RaJah
   Beal, William
TI THE ROLE OF THE CONSEQUENCE MANAGEMENT HOME TEAM IN THE FUKUSHIMA
   DAIICHI RESPONSE
SO HEALTH PHYSICS
LA English
DT Article
DE operational topics; accidents, power reactor; emergencies, radiological;
   environmental impact
AB The Consequence Management Home Team is a U. S. Department of Energy/National Nuclear Security Administration asset. It assists a variety of response organizations with modeling; radiological operations planning; field monitoring techniques; and the analysis, interpretation, and distribution of radiological data. These reach-back capabilities are activated quickly to support public safety and minimize the social and economic impact of a nuclear or radiological incident. In the Fukushima Daiichi response, the Consequence Management Home Team grew to include a broader range of support than was historically planned. From the early days of the response to the continuing involvement in supporting late phase efforts, each stage of the Consequence Management Home Team support had distinct characteristics in terms of management of incoming data streams as well as creation of products. Regardless of the stage, the Consequence Management Home Team played an important role in the U. S. response effort to the Fukushima Daiichi accident. Health Phys. 102(5):549-556; 2012
C1 [Pemberton, Wendy; Mena, RaJah] Remote Sensing Lab Nellis, Las Vegas, NV 89193 USA.
   [Beal, William] Remote Sensing Lab Andrews, Andrews AFB, MD 20762 USA.
RP Mena, R (reprint author), Remote Sensing Lab Nellis, POB 98521, Las Vegas, NV 89193 USA.
EM menarm@nv.doe.gov
FU U.S. Department of Energy [DE-AC52-06NA25946]
FX The opinions expressed in this editorial are those of the authors and do
   not represent the official opinion or position of the Remote Sensing
   Laboratory or the U. S. Department of Energy. This manuscript has been
   authored by National Security Technologies, LLC, under Contract No.
   DE-AC52-06NA25946 with the U.S. Department of Energy. The United States
   Government retains and the publisher, by accepting the article for
   publication, acknowledges that the United States Government retains a
   nonexclusive, paid-up, irrevocable, world-wide license to publish or
   reproduce the published form of this manuscript, or allow others to do
   so, for United States Government purposes.
NR 0
TC 1
Z9 1
U1 0
U2 3
PU LIPPINCOTT WILLIAMS & WILKINS
PI PHILADELPHIA
PA 530 WALNUT ST, PHILADELPHIA, PA 19106-3621 USA
SN 0017-9078
EI 1538-5159
J9 HEALTH PHYS
JI Health Phys.
PD MAY
PY 2012
VL 102
IS 5
BP 549
EP 556
DI 10.1097/HP.0b013e31824cfe38
PG 8
WC Environmental Sciences; Public, Environmental & Occupational Health;
   Nuclear Science & Technology; Radiology, Nuclear Medicine & Medical
   Imaging
SC Environmental Sciences & Ecology; Public, Environmental & Occupational
   Health; Nuclear Science & Technology; Radiology, Nuclear Medicine &
   Medical Imaging
GA 925VG
UT WOS:000302789300011
ER

PT J
AU Domanski, JP
   Park, SJ
   Harrison, SA
AF Domanski, Jeremy P.
   Park, Stephen J.
   Harrison, Stephen A.
TI Cardiovascular Disease and Nonalcoholic Fatty Liver Disease Does
   Histologic Severity Matter?
SO JOURNAL OF CLINICAL GASTROENTEROLOGY
LA English
DT Article
DE NASH; metabolic syndrome; cardiovascular disease; fatty liver; diabetes
ID TYPE-2 DIABETIC-PATIENTS; TERM-FOLLOW-UP; NATURAL-HISTORY; RISK;
   STEATOHEPATITIS; ASSOCIATION; PREVALENCE; EVENTS
AB Goals: We aimed to investigate the prevalence of cardiovascular disease in patients with nonalcoholic steatohepatitis (NASH) versus non-NASH fatty liver.
   Background: Nonalcoholic fatty liver disease (NAFLD) is associated with an increased risk of cardiovascular disease, which is a leading cause of death in this patient population. NASH is a subset of NAFLD that carries a higher risk of progression to cirrhosis and its associated complications.
   Study: We conducted a retrospective chart review of patients with biopsy-confirmed NAFLD, including NASH and non-NASH fatty liver, within the Gastroenterology and Hepatology clinic at Brooke Army Medical Center. Patients with secondary causes of chronic liver disease were excluded. The patients' records were reviewed for the presence of significant cardiovascular disease, which was defined as a history of stroke, unstable angina, myocardial infarction, congestive heart failure, or need for revascularization.
   Results: Nine hundred thirteen patients were identified and 377 patients met inclusion and exclusion criteria and were included in the final analysis. Of these, 219 patients had biopsies showing the presence of at least grade I NASH. The overall prevalence of cardiovascular disease was 6.63%. After controlling for age, sex, body mass index, and the presence of diabetes, there was no significant increase in the prevalence of cardiovascular disease in the NASH cohort over the non-NASH group.
   Conclusions: Cardiovascular disease is common among patients with NAFLD. However, no increased risk of cardiovascular disease was found among those patients with NASH as compared with those with non-NASH fatty liver.
C1 [Domanski, Jeremy P.; Harrison, Stephen A.] Brooke Army Med Ctr, Dept Med, Div Gastroenterol, Ft Sam Houston, TX 78234 USA.
   [Park, Stephen J.] Wilford Hall USAF Med Ctr, Dept Med, San Antonio, TX USA.
RP Harrison, SA (reprint author), Brooke Army Med Ctr, Dept Med, Div Gastroenterol & Hepatol, San Antonio, TX 78234 USA.
EM Stephen.harrison@amedd.army.mil
NR 17
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Z9 16
U1 0
U2 0
PU LIPPINCOTT WILLIAMS & WILKINS
PI PHILADELPHIA
PA 530 WALNUT ST, PHILADELPHIA, PA 19106-3621 USA
SN 0192-0790
J9 J CLIN GASTROENTEROL
JI J. Clin. Gastroenterol.
PD MAY-JUN
PY 2012
VL 46
IS 5
BP 427
EP 430
DI 10.1097/MCG.0b013e31822fb3f7
PG 4
WC Gastroenterology & Hepatology
SC Gastroenterology & Hepatology
GA 926GC
UT WOS:000302818300015
PM 22469639
ER

PT J
AU Gengler, JJ
   Roy, S
   Jones, JG
   Gord, JR
AF Gengler, Jamie J.
   Roy, Sukesh
   Jones, John G.
   Gord, James R.
TI Two-color time-domain thermoreflectance of various metal transducers
   with an optical parametric oscillator
SO MEASUREMENT SCIENCE AND TECHNOLOGY
LA English
DT Article
DE time-domain thermoreflectance; optical parametric oscillator
ID THERMAL-CONDUCTIVITY; PICOSECOND ULTRASONICS; FILMS; ELECTRON;
   CONSTANTS; DIFFUSION; DESIGN; NI
AB Conventional single-color laser pump-probe methods for measuring thermal properties are limited by sample requirements that arise from considerations of surface roughness and compatible thermoreflectance transducers. Here, we describe a new experimental arrangement for performing two-color time-domain thermoreflectance (TDTR). The technique is a variation of traditional pump-probe spectroscopy that is based on a femtosecond Ti:sapphire oscillator of a fixed wavelength and an optical parametric oscillator, with the goal being to create an independently tunable probe wavelength. This method offers two advantages: (1) spectral filtering of diffusely scattered pump light (to prevent it from reaching the detector) and (2) improvement in the thermoreflectance signal from different metal thin films. The wavelength tunability of the system allows enhancement of TDTR signal generation for multiple thermoreflectance transducer materials. This wavelength-adjustable feature, in turn, facilitates the direct measurement of the thermal transport properties of various thin films and substrates, which would be difficult with single-color femtosecond pump-probe systems. Demonstrated results include optimization of the probe wavelength for different metals, measurement of metal-graphite interfacial conductances on relatively rough samples and a two-order-of-magnitude calibration of thermal conductivity measurements using copper as a thermoreflectance transducer.
C1 [Gengler, Jamie J.; Jones, John G.] USAF, Res Lab, Mat & Mfg Directorate, Thermal Sci & Mat Branch, Wright Patterson AFB, OH 45433 USA.
   [Gengler, Jamie J.; Roy, Sukesh] Spectral Energies LLC, Dayton, OH 45431 USA.
   [Roy, Sukesh; Gord, James R.] USAF, Res Lab, Prop Directorate, Combust Branch, Wright Patterson AFB, OH 45433 USA.
RP Gengler, JJ (reprint author), USAF, Res Lab, Mat & Mfg Directorate, Thermal Sci & Mat Branch, 2941 Hobson Way, Wright Patterson AFB, OH 45433 USA.
EM jamie.gengler.ctr@wpafb.af.mil
FU Air Force Research Laboratory [FA8650-07-D-5800, FA8650-10-C-2008]
FX The authors would like to thank Dr Chris Muratore for supplying the HOPG
   samples and Dr David Cahill for helpful discussions concerning dR/dT
   measurements. Funding was provided by the Air Force Research Laboratory
   under Contract nos FA8650-07-D-5800 and FA8650-10-C-2008.
NR 48
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U1 0
U2 22
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0957-0233
EI 1361-6501
J9 MEAS SCI TECHNOL
JI Meas. Sci. Technol.
PD MAY
PY 2012
VL 23
IS 5
AR 055205
DI 10.1088/0957-0233/23/5/055205
PG 8
WC Engineering, Multidisciplinary; Instruments & Instrumentation
SC Engineering; Instruments & Instrumentation
GA 929CR
UT WOS:000303039300023
ER

PT J
AU Hermes, EDA
   Wells, TS
   Smith, B
   Boyko, EJ
   Gackstetter, GG
   Miller, SC
   Smith, TC
AF Hermes, Eric D. A.
   Wells, Timothy S.
   Smith, Besa
   Boyko, Edward J.
   Gackstetter, Gary G.
   Miller, Shannon C.
   Smith, Tyler C.
CA Millennium Cohort Study Team
TI Smokeless tobacco use related to military deployment, cigarettes and
   mental health symptoms in a large, prospective cohort study among US
   service members
SO ADDICTION
LA English
DT Article
DE Afghanistan; Iraq war; military personnel; post-traumatic stress
   disorder; risk factors; smokeless tobacco; tobacco use disorder;
   veterans; war
ID READJUSTMENT RATING-SCALE; MILLENNIUM COHORT; UNITED-STATES;
   PRIMARY-CARE; FOLLOW-UP; PERSONNEL; SMOKING; PREVALENCE; VALIDATION;
   STRESS
AB Aims To characterize smokeless tobacco initiation and persistence in relation to deployment, combat, occupation, smoking and mental health symptoms. Design Prospective cohort, utilizing self-reported survey data from the Millennium Cohort Study. Setting US military service members in all branches including active duty, reserve and National Guard. Participants Population-based sample of 45 272 participants completing both baseline (July 2001June 2003; n = 77 047) and follow-up (June 2004-January 2006; n = 55 021) questionnaires (follow-up response rate = 71.4%). Measurements Self-reported smokeless tobacco initiation and persistence. Findings Over the study period, 72.4% did not deploy, 13.7% deployed without combat exposures and 13.9% deployed with combat exposures, while 1.9% were smokeless tobacco initiators and 8.9% were persistent users. The odds of initiation were greater for deployers with combat exposure [odds ratio (OR), 1.76; 95% confidence interval (CI), 1.49-2.09], deployers without combat exposure (OR, 1.31; 95% CI, 1.07-1.60) and those who deployed multiple times (OR, 1.67; 95% CI, 1.31-2.14), as well as in smoking recidivists/ initiators (OR, 4.65; 95% CI, 3.82-5.66) and those reporting posttraumatic stress disorder symptoms (OR, 1.54; CI, 1.15-2.07). A similar pattern for higher odds of persistent use was observed for deployment and combat exposure, but not for smoking and mental health symptoms. Military occupation was not significantly associated with initiation or persistence. Conclusions Deployment and combat exposure in the US military are associated with increased risk of smokeless tobacco initiation and persistence while smoking and symptoms of post-traumatic stress disorder increase the odds for initiation. Research is needed on aspects of military service amenable to the reduction or prevention of tobacco consumption.
C1 [Hermes, Eric D. A.] Yale Univ, Sch Med, Dept Psychiat, New Haven, CT 06511 USA.
   [Wells, Timothy S.; Smith, Besa; Smith, Tyler C.] USN, Dept Deployment Hlth Res, Hlth Res Ctr, San Diego, CA 92152 USA.
   [Boyko, Edward J.] ERIC, VA Puget Sound, Seattle, WA USA.
   [Gackstetter, Gary G.] Analyt Serv Inc, Arlington, VA USA.
   [Miller, Shannon C.] USAF, Res Lab, Wright Patterson AFB, OH 45433 USA.
   [Miller, Shannon C.] Vet Affairs Med Ctr, Cincinnati, OH 45267 USA.
   [Miller, Shannon C.] Univ Cincinnati, Ctr Treatment Res & Educ Addict Disorders CeTREAD, Dept Psychiat & Behav Neurosci, Cincinnati, OH USA.
RP Hermes, EDA (reprint author), Yale Univ, Sch Med, Dept Psychiat, Ste 901,300 George St, New Haven, CT 06511 USA.
EM eric.hermes@yale.edu
FU US Army Medical Research and Materiel Command, Fort Detrick, Maryland;
   Henry M. Jackson Foundation for the Advancement of Military Medicine,
   Rockville, Maryland
FX The authors state that they have no financial disclosures or other
   conflicts of interest in the design, analysis or preparation of this
   manuscript. The Millennium Cohort Study is funded through the Military
   Operational Medicine Research Program of the US Army Medical Research
   and Materiel Command, Fort Detrick, Maryland. The funding organization
   had no role in the design and conduct of the study; collection, analysis
   or preparation of data,; or preparation, review or approval of the
   manuscript.; The Millennium Cohort Study Team includes Gregory C. Gray
   MD, MPH (College of Public Health and Health Professions, University of
   Florida, Gainesville, Florida), James R. Riddle DVM, MPH (Air Force
   Research Laboratory, Wright-Patterson Air Force Base, Dayton, Ohio),
   Paul J. Amoroso MD, MPH (Madigan Army Medical Center, Fort Lewis,
   Washington), Tomoko I. Hooper MD, MPH (Uniformed Services University on
   the Health Sciences, Bethesda, Maryland) and Margaret A. K. Ryan MD, MPH
   (US Naval Hospital Camp Pendleton, Camp Pendleton, California). We are
   indebted to the Millennium Cohort Study participants, without whom these
   analyses would not be possible. We thank Scott L. SeggermanBS, MS, from
   the Defense Manpower Data Center, Seaside, California. We also thank the
   professionals from the US Army Medical Research and Materiel Command,
   especially those from the Military Operational Medicine Research
   Program, Fort Detrick, Maryland. We thank Melissa Bagnell MPH; Gina
   Creaven, MBA; James Davies BS; Gia Gumbs, MPH; Nisara Granado MPH, PhD;
   Lesley Henry BA; Dennis Hernando BS; Jaime Horton BS; Isabel Jacobson
   MPH; Kelly Jones MPH; Lauren Kipp BA; Cynthia LeardMann MPH; Travis
   Leleu BS; Gordon Lynch; Jamie McGrew BS; Hope McMaster PhD; Stacie
   Nguyen BS; Amanda Pietrucha MPH; Teresa Powell MS; Kari Sausedo MA;
   Amber Seelig MPH; Beverly Sheppard BS; Katherine Snell BS; Steven
   Speigle; Marleen Welsh PhD; Martin White MPH; James Whitmer; and
   CharleneWongMPH; from the Department of Deployment Health Research and
   Michelle LeWark BA, from the Naval Health Research Center, San Diego,
   California. We appreciate the support of the Henry M. Jackson Foundation
   for the Advancement of Military Medicine, Rockville, Maryland. These
   individuals provided assistance as part of their official duties as
   employees of the Department of Defense and none received additional
   financial compensation. The VA Puget Sound provided support for Dr
   Boyko's participation in this research.
NR 49
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PU WILEY-BLACKWELL
PI MALDEN
PA COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA
SN 0965-2140
J9 ADDICTION
JI Addiction
PD MAY
PY 2012
VL 107
IS 5
BP 983
EP 994
DI 10.1111/j.1360-0443.2011.03737.x
PG 12
WC Substance Abuse; Psychiatry
SC Substance Abuse; Psychiatry
GA 919QW
UT WOS:000302344500029
PM 22126651
ER

PT J
AU Hilton, WM
   Svatek, RS
AF Hilton, William M.
   Svatek, Robert S.
TI Re: Phase III Study of Molecularly Targeted Adjuvant Therapy in Locally
   Advanced Urothelial Cancer of the Bladder Based on p53 Status
SO EUROPEAN UROLOGY
LA English
DT Editorial Material
ID CARCINOMA
C1 [Svatek, Robert S.] Univ Texas Hlth Sci Ctr San Antonio, San Antonio, TX 78229 USA.
   [Hilton, William M.] USAF, San Antonio, TX USA.
RP Svatek, RS (reprint author), Univ Texas Hlth Sci Ctr San Antonio, 7703 Floyd Curl Rd, San Antonio, TX 78229 USA.
EM svatek@uthscsa.edu
NR 6
TC 2
Z9 2
U1 0
U2 0
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0302-2838
J9 EUR UROL
JI Eur. Urol.
PD MAY
PY 2012
VL 61
IS 5
BP 1062
EP 1063
DI 10.1016/j.eururo.2012.02.011
PG 3
WC Urology & Nephrology
SC Urology & Nephrology
GA 918RJ
UT WOS:000302267900045
PM 22469412
ER

PT J
AU Tan, X
   Anzick, S
   Khan, SG
   Ueda, T
   Stone, G
   DiGiovanna, JJ
   Tamura, D
   Wattendorf, D
   Walker, R
   Meltzer, P
   Kraemer, KH
AF Tan, X.
   Anzick, S.
   Khan, S. G.
   Ueda, T.
   Stone, G.
   DiGiovanna, J. J.
   Tamura, D.
   Wattendorf, D.
   Walker, R.
   Meltzer, P.
   Kraemer, K. H.
TI Chimeric 9p-22q transcript in a patient with melanoma and DNA repair
   deficiency acts as a negative regulator of p14ARF
SO JOURNAL OF INVESTIGATIVE DERMATOLOGY
LA English
DT Meeting Abstract
CT 75th Annual Meeting of the Society-for-Investigative-Dermatology
CY MAY 09-12, 2012
CL Raleigh, NC
SP Soc Investigat Dermatol
C1 [Tan, X.; Khan, S. G.; Ueda, T.; DiGiovanna, J. J.; Tamura, D.; Kraemer, K. H.] NCI, Dermatol Branch, Bethesda, MD 20892 USA.
   [Anzick, S.; Stone, G.; Walker, R.; Meltzer, P.] NCI, Genet Branch, Bethesda, MD 20892 USA.
   [Wattendorf, D.] USAF, Off Surgeon Gen, Washington, DC 20330 USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU NATURE PUBLISHING GROUP
PI NEW YORK
PA 75 VARICK ST, 9TH FLR, NEW YORK, NY 10013-1917 USA
SN 0022-202X
J9 J INVEST DERMATOL
JI J. Invest. Dermatol.
PD MAY
PY 2012
VL 132
SU 1
MA 741
BP S127
EP S127
PG 1
WC Dermatology
SC Dermatology
GA 926XV
UT WOS:000302866900744
ER

PT J
AU Senkov, ON
   Scott, JM
   Senkova, SV
   Meisenkothen, F
   Miracle, DB
   Woodward, CF
AF Senkov, O. N.
   Scott, J. M.
   Senkova, S. V.
   Meisenkothen, F.
   Miracle, D. B.
   Woodward, C. F.
TI Microstructure and elevated temperature properties of a refractory
   TaNbHfZrTi alloy
SO JOURNAL OF MATERIALS SCIENCE
LA English
DT Article
ID HIGH-ENTROPY ALLOYS; SOLID-SOLUTION ALLOY; MECHANICAL-PROPERTIES;
   COMPRESSIVE PROPERTIES; SELF-DIFFUSION; ZIRCONIUM; CREEP
AB Compression properties of a refractory multicomponent alloy, Ta20Nb20Hf20Zr20Ti20, were determined in the temperature range of 296-1473 K and strain rate range of 10(-1)-10(-5) s(-1). The properties were correlated with the microstructure developed during compression testing. The alloy was produced by vacuum arc melting, and it was hot isostatically pressed (HIPd) and homogenized at 1473 K for 24 h prior to testing. It had a single-phase body-centered cubic structure with the lattice parameter a = 340.4 pm. The grain size was in the range of 100-200 mu m. During compression at a strain rate of epsilon = 10(-3) s(-1), the alloy had the yield strength of 929 MPa at 296 K, 790 MPa at 673 K, 675 MPa at 873 K, 535 MPa at 1073 K, 295 MPa at 1273 K and 92 MPa at 1473 K. Continuous strain hardening and good ductility (epsilon >= 50%) were observed in the temperature range from 296 to 873 K. Deformation at T = 1073 K and epsilon >= 10(-3) s(-1) was accompanied by intergranular cracking and cavitation, which was explained by insufficient dislocation and diffusion mobility to accommodate grain boundary sliding activated at this temperature. The intergranular cracking and cavitation disappeared with an increase in the deformation temperature to 1273 and 1473 K or a decrease in the strain rate to similar to 10(-5) s(-1). At these high temperatures and/or low-strain rates the alloy deformed homogeneously and showed steady-state flow at a nearly constant flow stress. Partial dynamic recrystallization, leading to formation of fine equiaxed grains near grain boundaries, was observed in the specimens deformed at 1073 and 1273 K and completed dynamic recrystallization was observed at 1473 K.
C1 [Senkov, O. N.; Scott, J. M.; Senkova, S. V.; Meisenkothen, F.; Miracle, D. B.; Woodward, C. F.] USAF, Res Lab, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA.
   [Senkov, O. N.; Scott, J. M.; Senkova, S. V.; Meisenkothen, F.] UES Inc, Dayton, OH 45432 USA.
RP Senkov, ON (reprint author), USAF, Res Lab, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA.
EM oleg.senkov@wpafb.af.mil
RI Senkov, Oleg/C-7197-2012
OI Senkov, Oleg/0000-0001-5587-415X
FU Air Force Research Laboratory; USAF [FA8650-10-D-5226]
FX Discussions with Drs. D. Dimiduk, P. Martin, R. S. Mishra, S. Rao, S. L.
   Semiatin, G. Wilks, and R. Wheeler are recognized. This study was
   supported through the Air Force Research Laboratory Director's Funds and
   through the USAF Contract No. FA8650-10-D-5226.
NR 44
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U1 28
U2 114
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 0022-2461
EI 1573-4803
J9 J MATER SCI
JI J. Mater. Sci.
PD MAY
PY 2012
VL 47
IS 9
BP 4062
EP 4074
DI 10.1007/s10853-012-6260-2
PG 13
WC Materials Science, Multidisciplinary
SC Materials Science
GA 918IF
UT WOS:000302241900015
ER

PT J
AU Barabash, RI
   Wang, XL
   Tiley, J
   Liaw, PK
   Fultz, B
AF Barabash, R. I.
   Wang, Xun-Li
   Tiley, Jaimie
   Liaw, P. K.
   Fultz, B.
TI Foreword: Special Topic on "Neutron and X-Ray Diffraction Studies of
   Advanced Materials IV"
SO METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND
   MATERIALS SCIENCE
LA English
DT Editorial Material
C1 [Barabash, R. I.] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA.
   [Wang, Xun-Li] Oak Ridge Natl Lab, Neutron Scattering Sci Div, Oak Ridge, TN 37831 USA.
   [Tiley, Jaimie] USAF, Res Lab, Wright Patterson AFB, OH 45433 USA.
   [Liaw, P. K.] Univ Tennessee, Knoxville, TN 37996 USA.
   [Fultz, B.] CALTECH, Pasadena, CA 91125 USA.
RP Barabash, RI (reprint author), Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA.
RI Wang, Xun-Li/C-9636-2010
OI Wang, Xun-Li/0000-0003-4060-8777
NR 0
TC 0
Z9 0
U1 0
U2 3
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 1073-5623
J9 METALL MATER TRANS A
JI Metall. Mater. Trans. A-Phys. Metall. Mater. Sci.
PD MAY
PY 2012
VL 43A
IS 5
BP 1410
EP 1412
DI 10.1007/s11661-011-0985-4
PG 3
WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical
   Engineering
SC Materials Science; Metallurgy & Metallurgical Engineering
GA 916JG
UT WOS:000302097400004
ER

PT J
AU Semiatin, SL
   McClary, KE
   Rollett, AD
   Roberts, CG
   Payton, EJ
   Zhang, F
   Gabb, TP
AF Semiatin, S. L.
   McClary, K. E.
   Rollett, A. D.
   Roberts, C. G.
   Payton, E. J.
   Zhang, F.
   Gabb, T. P.
TI Microstructure Evolution during Supersolvus Heat Treatment of a Powder
   Metallurgy Nickel-Base Superalloy
SO METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND
   MATERIALS SCIENCE
LA English
DT Article
ID SECONDARY HARDENING STEELS; COARSENING KINETICS; GRAIN-GROWTH;
   COMPUTER-SIMULATION; HIGH-STRENGTH; M2C CARBIDES; CEMENTITE; ALLOYS;
   RESISTANCE; PARTICLES
AB Microstructure evolution during the supersolvus heat treatment of a powder-metallurgy, low-solvus, high-refractory (LSHR) superalloy was established. For this purpose, three lots of LSHR with varying initial carbon/boron composition and thermomechanical history were subjected to a series of short-time (induction) and long-time (furnace) heat treatments followed by scanning electron microscopy/electron backscatter diffraction and quantitative metallography. The size of the (pinned) gamma grains exhibited a limited dependence on heating rate and soak time at peak temperature, and it was generally smaller than the predictions based on the classic Smith-Zener model. The differences were rationalized in terms of stereological and pinning-particle location effects. Observations of limited coarsening of the carbide/boride pinning particles were interpreted in the context of prior experimental observations and a modified Lifshitz-Slyosov-Wagner model applied previously for the coarsening of compound phases in steels.
C1 [Semiatin, S. L.] USAF, Res Lab, Mat & Mfg Directorate, AFRL RXLM, Dayton, OH 45433 USA.
   [McClary, K. E.] Wright State Univ, Dept Phys, Dayton, OH 45435 USA.
   [Rollett, A. D.] Carnegie Mellon Univ, Dept Mat Sci & Engn, Pittsburgh, PA 15213 USA.
   [Roberts, C. G.] Vallourec & Mannesmann USA Corp, Youngstown, OH 44510 USA.
   [Payton, E. J.] Ruhr Univ Bochum, Inst Werkstoffe, Bochum, Germany.
   [Zhang, F.] Computherm LLC, Madison, WI 53719 USA.
   [Gabb, T. P.] NASA, Glenn Res Ctr, Cleveland, OH 44135 USA.
RP Semiatin, SL (reprint author), USAF, Res Lab, Mat & Mfg Directorate, AFRL RXLM, Dayton, OH 45433 USA.
EM lee.semiatin@wpafb.af.mil
RI Rollett, Anthony/A-4096-2012; SEMIATIN, SHELDON/E-7264-2017; 
OI Rollett, Anthony/0000-0003-4445-2191; Payton, Eric/0000-0001-7478-9372
FU Air Force STW-21 Initiative [F33615-01-2-5225]; MRSEC at Carnegie Mellon
   University, NSF [DMR-0520425]; Metals Branch of the Air Force Research
   Laboratory's Materials and Manufacturing Directorate
FX This work was conducted as part of the in-house research of the Metals
   Branch of the Air Force Research Laboratory's Materials and
   Manufacturing Directorate. The support and encouragement of the
   Laboratory management are gratefully acknowledged. The assistance of
   P.N. Fagin and T.M. Brown in conducting the experiments is appreciated.
   Technical discussions with J. Gayda and J. Telesman (NASA GRC) are also
   much appreciated. Two authors (A. D. R. and C.G.R.) also acknowledge
   support from the Air Force STW-21 Initiative, Contract F33615-01-2-5225,
   and the MRSEC at Carnegie Mellon University, NSF Grant Number
   DMR-0520425.
NR 47
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U1 3
U2 23
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 1073-5623
J9 METALL MATER TRANS A
JI Metall. Mater. Trans. A-Phys. Metall. Mater. Sci.
PD MAY
PY 2012
VL 43A
IS 5
BP 1649
EP 1661
DI 10.1007/s11661-011-1035-y
PG 13
WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical
   Engineering
SC Materials Science; Metallurgy & Metallurgical Engineering
GA 916JG
UT WOS:000302097400031
ER

PT J
AU Klingshirn, CD
   DeWitt, M
   Striebich, R
   Anneken, D
   Shafer, L
   Corporan, E
   Wagner, M
   Brigalli, D
AF Klingshirn, C. D.
   DeWitt, M.
   Striebich, R.
   Anneken, D.
   Shafer, L.
   Corporan, E.
   Wagner, M.
   Brigalli, D.
TI Hydroprocessed Renewable Jet Fuel Evaluation, Performance, and Emissions
   in a T63 Turbine Engine
SO JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER-TRANSACTIONS OF THE
   ASME
LA English
DT Article
DE air pollution control; biofuel; combustion; environmental testing; jet
   engines; pyrolysis
AB Due to potential beneficial environmental impacts and increased supply availability, alternative fuels derived from renewable resources are evolving on the forefront as unconventional substitutes for fossil fuel. Focus is being given to the evaluation and certification of Hydroprocessed Renewable Jet (HRJ), a fuel produced from animal fat and/or plant oils (triglycerides) by hydroprocessing, as the next potential synthetic aviation fuel. Extensive efforts have recently been performed at the Air Force Research Laboratory (AFRL) at Wright Patterson Air Force Base (WPAFB) to evaluate the potential of two HRJ fuels produced from camelina and tallow feedstocks. These have included characterization of the fuel chemical, physical fuel characteristics and Fit-for-Purpose properties (FFP). The present effort describes general combustion performance and the emission propensity of a T63-A-700 Allison turbine engine operated on the HRJs and 50/50 (by volume) HRJ/JP-8 fuel blends relative to a specification JP-8. In addition, engine and emission testing with a blend of the tallow-derived HRJ and 16% bio-derived aromatic components was completed. Fundamental engine performance characterization allows for determination of the suitability of potential synthetic fuels while quantitation of gaseous and particulate matter emissions provides an assessment of the potential environmental impact compared to current petroleum-derived fuels. In addition, an extended 150 h endurance test was performed using a 50/50 blend of tallow-derived HRJ with JP-8 to evaluate the long-term operation of the engine with the synthetic fuel blend. This paper discusses the laboratory testing performed to characterize HRJs and results from the basic engine operability and emissions studies of the alternative fuel blends.
C1 [Klingshirn, C. D.; DeWitt, M.; Striebich, R.; Anneken, D.; Shafer, L.] Univ Dayton, Res Inst, Dayton, OH 45469 USA.
   [Corporan, E.; Wagner, M.; Brigalli, D.] USAF, Res Lab WPAFB, Dayton, OH 45433 USA.
RP Klingshirn, CD (reprint author), Univ Dayton, Res Inst, 300 Coll Pk, Dayton, OH 45469 USA.
FU Air Force research Laboratory (AFRL) [FA8650-10-2-2934]
FX The research and work of UDRI was supported by the Air Force research
   Laboratory (AFRL) under the cooperative work agreement FA8650-10-2-2934.
   The authors are very grateful to the following UDRI technical personnel;
   Joe Mantz for experimental setup and Ashil Higgins for LECO analysis of
   quartz samples.
NR 13
TC 1
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U1 2
U2 32
PU ASME-AMER SOC MECHANICAL ENG
PI NEW YORK
PA THREE PARK AVE, NEW YORK, NY 10016-5990 USA
SN 0742-4795
J9 J ENG GAS TURB POWER
JI J. Eng. Gas. Turbines Power-Trans. ASME
PD MAY
PY 2012
VL 134
IS 5
AR 051506
DI 10.1115/1.4004841
PG 8
WC Engineering, Mechanical
SC Engineering
GA 908UH
UT WOS:000301517800007
ER

PT J
AU Lee, J
   Varshney, V
   Brown, JS
   Roy, AK
   Farmer, BL
AF Lee, Jonghoon
   Varshney, Vikas
   Brown, Joshua S.
   Roy, Ajit K.
   Farmer, Barry L.
TI Single mode phonon scattering at carbon nanotube-graphene junction in
   pillared graphene structure
SO APPLIED PHYSICS LETTERS
LA English
DT Article
ID MOLECULAR-DYNAMICS; THERMAL TRANSPORT; NANOSTRUCTURE; ARCHITECTURES;
   SIMULATION
AB Phonon scattering at the carbon nanotube-graphene interface is studied in the pillared graphene structure, using the phonon wave packet method. Qualitatively different scattering characteristics, compared to previous studies of carbon nanotube systems, are observed. The phonon group velocity, dictating the energy transmission in simple carbon nanotube systems, is found to play an insignificant role. Distributing the incoming phonon energy to both sides of the interface more or less equally, the graphene interface provides a strong diffusive scattering site, which features a microscopic understanding of the decisive role of junction on the thermal transport in the pillared graphene hierarchical structure. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4711206]
C1 [Lee, Jonghoon; Varshney, Vikas; Roy, Ajit K.] USAF, Thermal Sci & Mat Branch, Mat & Mfg Directorate, Res Lab, Wright Patterson AFB, OH 45433 USA.
   [Lee, Jonghoon; Varshney, Vikas] Universal Technol Corp, Dayton, OH 45432 USA.
   [Brown, Joshua S.] Louisiana Tech Univ, Coll Engn & Sci, Ruston, LA 71272 USA.
RP Lee, J (reprint author), USAF, Thermal Sci & Mat Branch, Mat & Mfg Directorate, Res Lab, Wright Patterson AFB, OH 45433 USA.
EM jonghoon.lee@wpafb.af.mil; vikas.varshney@wpafb.af.mil
FU U.S. Air Force Office of Scientific Research (AFOSR); Department of
   Defense Supercomputing Research Center (AFRL-DSRC) [2306AR8P]
FX The authors are very grateful to U.S. Air Force Office of Scientific
   Research (AFOSR) and Dr. Joan Fuller for the financial support of the
   Lab Task: 2306AR8P, Department of Defense Supercomputing Research Center
   (AFRL-DSRC) for computational time to carry out the simulations, and Dr.
   Jennifer Wohlwend for the critical reading of this letter.
NR 20
TC 18
Z9 18
U1 2
U2 45
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 30
PY 2012
VL 100
IS 18
AR 183111
DI 10.1063/1.4711206
PG 4
WC Physics, Applied
SC Physics
GA 936NZ
UT WOS:000303598600052
ER

PT J
AU Akdim, B
   Pachter, R
   Day, PN
   Kim, SS
   Naik, RR
AF Akdim, B.
   Pachter, R.
   Day, P. N.
   Kim, S. S.
   Naik, R. R.
TI On modeling biomolecular-surface nonbonded interactions: application to
   nucleobase adsorption on single-wall carbon nanotube surfaces
SO NANOTECHNOLOGY
LA English
DT Article
ID DENSITY-FUNCTIONAL-THEORY; DER-WAALS INTERACTIONS; NUCLEIC-ACID BASES;
   COMPLEX MATERIALS; STRANDED-DNA; DISPERSION; GRAPHENE; BINDING;
   SPECTROSCOPY; RECOGNITION
AB In this work we explored the selectivity of single nucleobases towards adsorption on chiral single-wall carbon nanotubes (SWCNTs) by density functional theory calculations. Specifically, the adsorption of molecular models of guanine (G), adenine (A), thymine (T), and cytosine (C), as well as of AT and GC Watson-Crick (WC) base pairs on chiral SWCNT C(6, 5), C(9, 1) and C(8, 3) model structures, was analyzed in detail. The importance of correcting the exchange-correlation functional for London dispersion was clearly demonstrated, yet limitations in modeling such interactions by considering the SWCNT as a molecular model may mask subtle effects in a molecular-macroscopic material system. The trend in the calculated adsorption energies of the nucleobases on same diameter C(6, 5) and C(9, 1) SWCNT surfaces, i.e. G > A > T > C, was consistent with related computations and experimental work on graphitic surfaces, however contradicting experimental data on the adsorption of single-strand short homo-oligonucleotides on SWCNTs that demonstrated a trend of G > C > A > T (Albertorio et al 2009 Nanotechnology 20 395101). A possible role of electrostatic interactions in this case was partially captured by applying the effective fragment potential method, emphasizing that the interplay of the various contributions in modeling nonbonded interactions is complicated by theoretical limitations. Finally, because the calculated adsorption energies for Watson-Crick base pairs have shown little effect upon adsorption of the base pair farther from the surface, the results on SWCNT sorting by salmon genomic DNA could be indicative of partial unfolding of the double helix upon adsorption on the SWCNT surface.
C1 [Akdim, B.; Pachter, R.; Day, P. N.; Kim, S. S.; Naik, R. R.] USAF, Mat & Mfg Directorate, Res Lab, Wright Patterson AFB, OH 45433 USA.
   [Akdim, B.; Day, P. N.] Gen Dynam Informat Technol Inc, Dayton, OH 45433 USA.
   [Kim, S. S.] UES Inc, Dayton, OH 45433 USA.
RP Akdim, B (reprint author), USAF, Mat & Mfg Directorate, Res Lab, Wright Patterson AFB, OH 45433 USA.
EM Brahim.Akdim@wpafb.af.mil; Ruth.Pachter@wpafb.af.mil
FU AFRL Distributed Shared Resource Center
FX The DoD High Performance Computing Modernization Program is gratefully
   acknowledged for computational resources and the AFRL Distributed Shared
   Resource Center for helpful support.
NR 37
TC 16
Z9 16
U1 1
U2 35
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0957-4484
J9 NANOTECHNOLOGY
JI Nanotechnology
PD APR 27
PY 2012
VL 23
IS 16
AR 165703
DI 10.1088/0957-4484/23/16/165703
PG 6
WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary;
   Physics, Applied
SC Science & Technology - Other Topics; Materials Science; Physics
GA 923SN
UT WOS:000302639500014
PM 22460916
ER

PT J
AU Wang, W
   Lycett, SJ
   von Cramon-Taubadel, N
   Jin, JJH
   Bae, CJ
AF Wang, Wei
   Lycett, Stephen J.
   von Cramon-Taubadel, Noreen
   Jin, Jennie J. H.
   Bae, Christopher J.
TI Comparison of Handaxes from Bose Basin (China) and the Western Acheulean
   Indicates Convergence of Form, Not Cognitive Differences
SO PLOS ONE
LA English
DT Article
ID MOVIUS LINE; STONE TOOLS; MORPHOLOGICAL VARIATION;
   MORPHOMETRIC-ANALYSIS; HOMININ DISPERSALS; FOSSIL RECORD; SOUTH CHINA;
   ASIA; ARCHAEOLOGY; TECHNOLOGY
AB Alleged differences between Palaeolithic assemblages from eastern Asia and the west have been the focus of controversial discussion for over half a century, most famously in terms of the so-called 'Movius Line'. Recent discussion has centered on issues of comparability between handaxes from eastern Asian and 'Acheulean' examples from western portions of the Old World. Here, we present a multivariate morphometric analysis in order to more fully document how Mid-Pleistocene (i.e.,803 Kyr) handaxes from Bose Basin, China compare to examples from the west, as well as with additional (Mode 1) cores from across the Old World. Results show that handaxes from both the western Old World and Bose are significantly different from the Mode 1 cores, suggesting a gross comparability with regard to functionally-related form. Results also demonstrate overlap between the ranges of shape variation in Acheulean handaxes and those from Bose, demonstrating that neither raw material nor cognitive factors were an absolute impediment to Bose hominins in making comparable handaxe forms to their hominin kin west of the Movius Line. However, the shapes of western handaxes are different from the Bose examples to a statistically significant degree. Moreover, the handaxe assemblages from the western Old World are all more similar to each other than any individual assemblage is to the Bose handaxes. Variation in handaxe form is also comparatively high for the Bose material, consistent with suggestions that they represent an emergent, convergent instance of handaxe technology authored by Pleistocene hominins with cognitive capacities directly comparable to those of 'Acheulean' hominins.
C1 [Wang, Wei] Guangxi Museum Nationalities, Nanning, Peoples R China.
   [Lycett, Stephen J.; von Cramon-Taubadel, Noreen] Univ Kent, Dept Anthropol, Sch Anthropol & Conservat, Canterbury, Kent, England.
   [Jin, Jennie J. H.] Cent Identificat Lab JPAC CIL, Joint POW MIA Accounting Command, Hickam AFB, HI USA.
   [Jin, Jennie J. H.; Bae, Christopher J.] Univ Hawaii Manoa, Dept Anthropol, Honolulu, HI 96822 USA.
RP Wang, W (reprint author), Guangxi Museum Nationalities, Nanning, Peoples R China.
EM S.J.Lycett@kent.ac.uk
FU National Natural Science Foundation of China [40772011]; Natural Science
   Foundation of Guangxi [0991236]; Wenner-Gren Foundation (ICRG) [82];
   National Geographic Society [8372-07]; British Academy [SG-52210]
FX This study has been supported financially by the National Natural
   Science Foundation of China grant 40772011, Natural Science Foundation
   of Guangxi grant 0991236, the Wenner-Gren Foundation (ICRG #82), the
   National Geographic Society (#8372-07), and the British Academy
   (SG-52210). The funders had no role in study design, data collection and
   analysis, decision to publish, or preparation of the manuscript.
NR 63
TC 15
Z9 16
U1 0
U2 26
PU PUBLIC LIBRARY SCIENCE
PI SAN FRANCISCO
PA 1160 BATTERY STREET, STE 100, SAN FRANCISCO, CA 94111 USA
SN 1932-6203
J9 PLOS ONE
JI PLoS One
PD APR 19
PY 2012
VL 7
IS 4
AR e35804
DI 10.1371/journal.pone.0035804
PG 7
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA 959TL
UT WOS:000305336200069
PM 22536441
ER

PT J
AU Jordan, JL
   Baer, MR
AF Jordan, Jennifer L.
   Baer, Melvin R.
TI Mixture model for determination of shock equation of state
SO JOURNAL OF APPLIED PHYSICS
LA English
DT Article
ID TO-DETONATION TRANSITION; STRESS-WAVE PROPAGATION; COMPOSITE-MATERIALS;
   EPOXY-RESIN; HUGONIOT; BEHAVIOR; SYSTEMS
AB Simple mixture models for the prediction of shock equations of state (Hugoniot) are a necessary tool for characterization of multiple composites. A mixture model for determining the shock equation of state of composite materials is presented. The model is completely flexible allowing for multiple (>2) components. Additionally, error propagation analysis for the two component mixture model has been accomplished. The model predicts the equation of state to 5%-15% of the experimental data, which is comparable to variations realized in meso-scale modeling of similar materials. [http://dx.doi.org/10.1063/1.3702873]
C1 [Jordan, Jennifer L.] USAF, Res Lab, AFRL RWME, Eglin AFB, FL 32542 USA.
   [Baer, Melvin R.] Sandia Natl Labs, Albuquerque, NM 87185 USA.
RP Jordan, JL (reprint author), USAF, Res Lab, AFRL RWME, Eglin AFB, FL 32542 USA.
EM Jennifer.jordan@eglin.af.mil
OI Jordan, Jennifer/0000-0002-4596-5872
NR 36
TC 1
Z9 1
U1 3
U2 11
PU AMER INST PHYSICS
PI MELVILLE
PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA
SN 0021-8979
EI 1089-7550
J9 J APPL PHYS
JI J. Appl. Phys.
PD APR 15
PY 2012
VL 111
IS 8
AR 083516
DI 10.1063/1.3702873
PG 10
WC Physics, Applied
SC Physics
GA 936OB
UT WOS:000303598800031
ER

PT J
AU Patra, NC
   Bharatan, S
   Li, J
   Tilton, M
   Iyer, S
AF Patra, Nimai C.
   Bharatan, Sudhakar
   Li, Jia
   Tilton, Michael
   Iyer, Shanthi
TI Molecular beam epitaxial growth and characterization of InSb1-xNx on
   GaAs for long wavelength infrared applications
SO JOURNAL OF APPLIED PHYSICS
LA English
DT Article
ID BV SEMICONDUCTOR SURFACES; ELECTRONIC-PROPERTIES; INNXSB1-X ALLOYS;
   DILUTE INNXSB1-X; INSB EPILAYERS; TEMPERATURE; NITRIDATION; NITROGEN;
   SPECTROSCOPY; DETECTORS
AB Recent research progress and findings in InSbN have attracted great attention due to its use in long wavelength infrared applications. A large bandgap reduction in InSb resulting from high N incorporation with minimal crystal defects is challenging due to relatively small atomic size of N. Hence optimization of growth conditions plays an important role in the growth of high-quality InSbN epilayers for device purposes. In this paper, we report on the correlation of structural, vibrational, electrical, and optical properties of molecular beam epitaxially grown InSbN epilayers grown on GaAs substrates, as a function of varying growth temperatures. Two dimensional growths of InSb and InSbN were confirmed from dynamic reflection high energy electron diffraction patterns and growth parameters were optimized. High crystalline quality of the epilayers is attested to by a low full width at half maximum of 200 arcsec from high resolution x-ray diffraction (HRXRD) scans and by the high intensity and well-resolved InSb longitudinal optical (LO) and 2nd order InSb LO mode observed from micro-Raman spectroscopy. The N incorporation in these InSbN epilayers is estimated to be 1.4% based on HRXRD simulation. X-ray photoelectron spectroscopy (XPS) studies reveal that most of the N present in the layers are in the form of In-N bonding. Variation of the lattice disorder with growth temperature is correlated with the types of N bonding present, the carrier concentration and mobility, observed in the corresponding XPS spectra and Hall measurements, respectively. XPS analysis, HRXRD scans, and Raman spectral analysis indicate that lower growth temperature favors In-N bonding which dictates N incorporation in the substitutional sites and lattice disorder, whereas, high growth temperature promotes the formation of In-N-Sb bonding. The best room temperature and 77 K electrical transport parameters and maximum redshift in the absorption edge have been achieved in the InSbN epilayer grown in the 290 degrees C similar to 330 degrees C temperature range. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.3702453]
C1 [Patra, Nimai C.; Bharatan, Sudhakar; Li, Jia; Iyer, Shanthi] N Carolina Agr & Tech State Univ, Greensboro, NC 27411 USA.
   [Tilton, Michael] USAF, Directed Energy Directorate, Res Lab, Albuquerque, NM 87117 USA.
RP Patra, NC (reprint author), N Carolina Agr & Tech State Univ, Greensboro, NC 27411 USA.
EM iyer@ncat.edu
FU Army Research Office [W911NF-07-1-0577]
FX This work is supported by the Army Research Office (Grant No.
   W911NF-07-1-0577, under the direction of Program Manager Michael
   Gerhold).
NR 38
TC 4
Z9 4
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 2012
VL 111
IS 8
AR 083104
DI 10.1063/1.3702453
PG 8
WC Physics, Applied
SC Physics
GA 936OB
UT WOS:000303598800004
ER

PT J
AU Huang, SW
   Wang, HG
   Ding, KH
   Tsang, L
AF Huang, Shaowu
   Wang, Haogang
   Ding, Kung-Hau
   Tsang, Leung
TI Subwavelength imaging enhancement through a three-dimensional plasmon
   superlens with rough surface
SO OPTICS LETTERS
LA English
DT Article
ID LENS
AB In this Letter we investigate the subwavelength imaging of a three-dimensional plasmon superlens based on the full vector wave simulations of optical wave propagation and transmission. The optical transfer functions are computed. Comparisons are made between the results of lenses with flat and periodic/random rough surfaces. We also study the problem of practical imaging system geometry using laser as an illumination source. Results show that the lens with periodic or random roughness can reduce the field interference effects, and provide improved focus on the transmission field and the Poynting flux. We illustrate that the subwavelength roughness in a plasmon lens can enhance the image resolution over a flat lens for both matched and unmatched permittivity conditions. The enhancement of resolution occurs because the introduced subwavelength roughness can amplify the evanescent wave components and suppress the surface plasmon resonance peaks. (C) 2012 Optical Society of America
C1 [Huang, Shaowu; Wang, Haogang; Tsang, Leung] Univ Washington, Dept Elect Engn, Seattle, WA 98195 USA.
   [Wang, Haogang] Zhejiang Univ, Electromagnet Acad, Hangzhou 310027, Zhejiang, Peoples R China.
   [Ding, Kung-Hau] USAF, Sensor Directorate, Res Lab, Wright Patterson AFB, OH 45433 USA.
RP Huang, SW (reprint author), Univ Washington, Dept Elect Engn, Seattle, WA 98195 USA.
EM shaowu@uw.edu
NR 4
TC 13
Z9 14
U1 2
U2 18
PU OPTICAL SOC AMER
PI WASHINGTON
PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA
SN 0146-9592
J9 OPT LETT
JI Opt. Lett.
PD APR 15
PY 2012
VL 37
IS 8
BP 1295
EP 1297
PG 3
WC Optics
SC Optics
GA 937MB
UT WOS:000303661500004
PM 22513664
ER

PT J
AU Slipchenko, MN
   Miller, JD
   Roy, S
   Gord, JR
   Danczyk, SA
   Meyer, TR
AF Slipchenko, Mikhail N.
   Miller, Joseph D.
   Roy, Sukesh
   Gord, James R.
   Danczyk, Stephen A.
   Meyer, Terrence R.
TI Quasi-continuous burst-mode laser for high-speed planar imaging
SO OPTICS LETTERS
LA English
DT Article
ID OPTICAL PARAMETRIC OSCILLATOR; INDUCED FLUORESCENCE; TURBULENT FLAMES;
   OH
AB The pulse-burst duration of a compact burst-mode Nd:YAG laser is extended by one order of magnitude compared to previous flashlamp-pumped designs by incorporating a fiber oscillator and diode-pumped solid-state amplifiers. The laser has a linewidth of <2 GHz at 1064.3 nm with 150 mJ per individual pulse at 10 kHz. The performance of the system is evaluated by using the third-harmonic output at 354.8 nm for high-speed planar laser-induced fluorescence of formaldehyde in a lifted methane-air diffusion flame. A total of 100 and 200 sequential images of unsteady fluid-flame interactions are acquired at repetition rates of 10 kHz and 20 kHz, respectively. (C) 2012 Optical Society of America
C1 [Miller, Joseph D.; Meyer, Terrence R.] Iowa State Univ, Dept Mech Engn, Ames, IA 50011 USA.
   [Slipchenko, Mikhail N.; Roy, Sukesh] Spectral Energies LLC, Dayton, OH 45431 USA.
   [Gord, James R.] USAF, Res Lab, Prop Directorate, Wright Patterson AFB, OH 45433 USA.
   [Danczyk, Stephen A.] USAF, Res Lab, Prop Directorate, Edwards Afb, CA 93524 USA.
RP Meyer, TR (reprint author), Iowa State Univ, Dept Mech Engn, Ames, IA 50011 USA.
EM trm@iastate.edu
FU Air Force Research Laboratory (AFRL) [FA8650-10-C-2008]; Air Force
   Office of Scientific Research
FX This work was funded by the Air Force Research Laboratory (AFRL) under
   contract No. FA8650-10-C-2008 and by the Air Force Office of Scientific
   Research (Dr. Chiping Li, Program Manager). The authors are grateful for
   the technical assistance of C. Dedic of Iowa State University, as well
   as for valuable discussions with N. Jiang of Spectral Energies, W.
   Lempert of The Ohio State University, and I. Leyva, D. Talley, B. Kiel,
   M. Light-foot, and S. A. Schumaker of AFRL.
NR 17
TC 25
Z9 25
U1 3
U2 14
PU OPTICAL SOC AMER
PI WASHINGTON
PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA
SN 0146-9592
J9 OPT LETT
JI Opt. Lett.
PD APR 15
PY 2012
VL 37
IS 8
BP 1346
EP 1348
PG 3
WC Optics
SC Optics
GA 937MB
UT WOS:000303661500021
PM 22513681
ER

PT J
AU Chamberlain, JW
   Maurer, K
   Cooper, J
   Lyon, WJ
   Danley, DL
   Ratner, DM
AF Chamberlain, Jeffrey W.
   Maurer, Karl
   Cooper, John
   Lyon, Wanda J.
   Danley, David L.
   Ratner, Daniel M.
TI Microelectrode array biosensor for studying carbohydrate-mediated
   interactions
SO BIOSENSORS & BIOELECTRONICS
LA English
DT Article
DE Biosensor; Microelectrode array; Carbohydrate; Polypyrrole; CustomArray
ID FUTURE ANTIADHESION DRUGS; BREAST-FED INFANTS; ESCHERICHIA-COLI;
   INFECTIOUS-DISEASES; HUMAN-MILK; ELECTROCHEMICAL DETECTION; BACTERIAL
   DISEASES; UNITED-STATES; OLIGOSACCHARIDES; MICROARRAYS
AB Carbohydrate-mediated host-pathogen interactions are essential to bacterial and viral pathogenesis, and represent an attractive target for the development of antiadhesives to prevent infection. We present a versatile microelectrode array-based platform to investigate carbohydrate-mediated protein and bacterial binding, with the objective of developing a generalizable method for screening inhibitors of host-microbe interactions. Microelectrode arrays are well suited for interrogating biological binding events, including proteins and whole-cells, and are amenable to electrochemical derivitization, facilitating rapid deposition of biomolecules. In this study, we achieve microelectrode functionalization with carbohydrates via controlled polymerization of pyrrole to individual microelectrodes, followed by physisorption of neoglycoconjugates to the polypyrrole-coated electrodes. Bioactivity of the immobilized carbohydrates was confirmed with carbohydrate-binding proteins (lectins) detected by both fluorescent and electrochemical means. The platform's ability to analyze whole-cell binding was demonstrated using strains of Escherichia coli and Salmonella enterica, and the dose-dependent inhibition of S. enterica by a soluble carbohydrate antiadhesive. (c) 2012 Elsevier B.V. All rights reserved.
C1 [Chamberlain, Jeffrey W.; Ratner, Daniel M.] Univ Washington, Dept Bioengn, Seattle, WA 98195 USA.
   [Maurer, Karl; Cooper, John; Danley, David L.] CombiMatrix, Irvine, CA 92618 USA.
   [Lyon, Wanda J.] USAF, Wright Patterson AF Base, Wright Patterson AFB, OH 45433 USA.
RP Ratner, DM (reprint author), Univ Washington, Dept Bioengn, Box 355061, Seattle, WA 98195 USA.
EM jeffwc@uw.edu; maurer.karl@gmail.com; jcooper@customarrayinc.com;
   wanda.lyon@wpafb.af.mil; ddanley@sprintmail.com; dratner@uw.edu
RI Ratner, Daniel/J-6391-2013
FU Department of Bioengineering at the University of Washington; Washington
   Research Foundation; Air Force Research Laboratory (Wright-Patterson
   AFB, OH)
FX The authors would like to thank the Department of Bioengineering at the
   University of Washington, the Washington Research Foundation, and the
   Air Force Research Laboratory (Wright-Patterson AFB, OH) for funding
   this research. JWC would like to thank the NSF Graduate Research
   Fellowship Program for support. The authors would also like to thank the
   following labs and individuals: the Sokurenko lab (UW Department of
   Microbiology) for gifts of E. coli and S. enterica used in this study;
   Dagmara Kisiela and Victoria Rodriguez (Sokurenko lab) for valuable
   discussions and assistance in working with the bacteria; the Stahl lab
   (UW/ Department of Civil & Environmental Engineering) for the use of the
   GenePix 4000b microarray scanner; UWEB (UW Department of
   Bioengineering), specifically Drs. Mike Linnes and Chris Barnes, for aid
   with critical point drying; Dr. Bob Underwood (UW Department of
   Medicine) for cell fixation; Jim Kirk for valuable discussions and help
   with figures; and finally the UW NanoTech User Facility, a member of the
   NSF National Nanotechnology Infrastructure Network (NNIN), for the use
   of the scanning electron microscope.
NR 49
TC 3
Z9 3
U1 2
U2 17
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 2012
VL 34
IS 1
BP 253
EP 260
DI 10.1016/j.bios.2012.02.017
PG 8
WC Biophysics; Biotechnology & Applied Microbiology; Chemistry, Analytical;
   Electrochemistry; Nanoscience & Nanotechnology
SC Biophysics; Biotechnology & Applied Microbiology; Chemistry;
   Electrochemistry; Science & Technology - Other Topics
GA 927DF
UT WOS:000302886500040
PM 22405843
ER

PT J
AU Prince, BD
   Steiner, CP
   Chiu, YH
AF Prince, Benjamin D.
   Steiner, Colby P.
   Chiu, Yu-Hui
TI Chemi-luminescence measurements of hyperthermal Xe+/Xe2+ + NH3 reactions
SO JOURNAL OF CHEMICAL PHYSICS
LA English
DT Article
ID FOURIER-TRANSFORM SPECTROSCOPY; PROPELLED HALL THRUSTERS;
   ELECTRON-IMPACT; CROSS-SECTIONS; ENERGY-DISTRIBUTION; AMMONIA; NH3;
   PHOTODISSOCIATION; EXCITATION; IONS
AB Luminescence spectra are recorded for the reactions of Xe+ + NH3 and Xe2+ + NH3 at energies ranging from 11.5 to 206 eV in the center-of-mass (E-cm) frame. Intense features of the luminescence spectra are attributed to the NH (A (3)Pi(i)-X-3 Sigma(-)), hydrogen Balmer series, and Xe I emission observable for both primary ions. Evidence for charge transfer products is only found through Xe I emission for both primary ions and NH+ emission for Xe2+ primary ions. For both primary ions, the absolute NH (A-X) cross section increases with collision energy before leveling off at a constant value, approximately 9 x 10(-18) cm(2), at about 50 eV while H-alpha emission increases linearly with collision energy. The nascent NH (A) populations derived from the spectral analysis are found to be independent of collision energy and have a constant rotational temperature of 4200 K. [http://dx.doi.org/10.1063/1.3702039]
C1 [Prince, Benjamin D.; Steiner, Colby P.] USAF, Res Lab, Space Vehicles Directorate, Kirtland AFB, NM 87117 USA.
   [Chiu, Yu-Hui] Busek Co Inc, Natick, MA 01760 USA.
RP Prince, BD (reprint author), USAF, Res Lab, Space Vehicles Directorate, Kirtland AFB, NM 87117 USA.
FU National Research Council; Space Vehicle Directorate of the Air Force
   Research Laboratory; AFOSR [2303ES02]
FX The authors are indebted to Dr. Rainer Dressler of Spectral Sciences
   Inc. for very helpful discussions. B. Prince acknowledged the support of
   National Research Council research program. C. Steiner acknowledged the
   support from the Space Scholar program of the Space Vehicle Directorate
   of the Air Force Research Laboratory. This work is funded by AFOSR
   through task 2303ES02 (Program manager: Michael Berman).
NR 36
TC 0
Z9 0
U1 0
U2 3
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 14
PY 2012
VL 136
IS 14
AR 144314
DI 10.1063/1.3702039
PG 8
WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical
SC Chemistry; Physics
GA 930NT
UT WOS:000303146800033
PM 22502525
ER

PT J
AU Sihn, S
   Ganguli, S
   Anderson, DP
   Roy, AK
AF Sihn, Sangwook
   Ganguli, Sabyasachi
   Anderson, David P.
   Roy, Ajit K.
TI Enhancement of through-thickness thermal conductivity of sandwich
   construction using carbon foam
SO COMPOSITES SCIENCE AND TECHNOLOGY
LA English
DT Article
DE Carbon foam; Sandwich; Mechanical properties; Thermal properties;
   Interface
ID TRANSPORT
AB As a thermal management system, a sandwich construction was developed to have both superior thermal conductivity and structural integrity. The sandwich construction consists of a carbon foam core and unidirectional graphite/epoxy composite facesheets. An emphasis was put on enhancing the thermal conductivity of each phase of sandwich construction as well as interface between the phases. A commercially-available carbon foam was characterized mechanically and thermally. Property variation and anisotropy were observed with the highly conductive graphitic carbon foam. Co-curing of the composite facesheets with the carbon foam core was demonstrated to minimize the thickness of the adhesive layer between the facesheets and the core to produce the best construction of those tested. Comparison made with an adhesively bonded specimen shows that the co-curing is a more efficient method to enhance the through-thickness conductivity. Parametric studies with an analytic model indicate that degree of enhancement in the overall through-thickness conductivity of the sandwich construction from the enhancement of each component including the foam core, facesheet and the bonding methods. (c) 2012 Elsevier Ltd. All rights reserved.
C1 [Sihn, Sangwook; Ganguli, Sabyasachi; Anderson, David P.] Univ Dayton, Res Inst, Multiscale Composites & Polymers Div, Dayton, OH 45469 USA.
   [Sihn, Sangwook; Ganguli, Sabyasachi; Anderson, David P.; Roy, Ajit K.] USAF, Res Lab, Mat & Mfg Directorate, AFRL RXBT, Wright Patterson AFB, OH 45433 USA.
RP Sihn, S (reprint author), Univ Dayton, Res Inst, Multiscale Composites & Polymers Div, 300 Coll Pk, Dayton, OH 45469 USA.
EM sangwook@alumni.stanford.edu
FU US Air Force [FA8650-05-D-5052]
FX This work was performed under US Air Force Contract No.
   FA8650-05-D-5052. The authors would like to thank Ron Esterline of the
   University of Dayton Research Institute for sample preparation and
   testing.
NR 12
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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 APR 13
PY 2012
VL 72
IS 7
BP 767
EP 773
DI 10.1016/j.compscitech.2012.02.003
PG 7
WC Materials Science, Composites
SC Materials Science
GA 928MV
UT WOS:000302987800002
ER

PT J
AU Hashim, DP
   Narayanan, NT
   Romo-Herrera, JM
   Cullen, DA
   Hahm, MG
   Lezzi, P
   Suttle, JR
   Kelkhoff, D
   Munoz-Sandoval, E
   Ganguli, S
   Roy, AK
   Smith, DJ
   Vajtai, R
   Sumpter, BG
   Meunier, V
   Terrones, H
   Terrones, M
   Ajayan, PM
AF Hashim, Daniel P.
   Narayanan, Narayanan T.
   Romo-Herrera, Jose M.
   Cullen, David A.
   Hahm, Myung Gwan
   Lezzi, Peter
   Suttle, Joseph R.
   Kelkhoff, Doug
   Munoz-Sandoval, E.
   Ganguli, Sabyasachi
   Roy, Ajit K.
   Smith, David J.
   Vajtai, Robert
   Sumpter, Bobby G.
   Meunier, Vincent
   Terrones, Humberto
   Terrones, Mauricio
   Ajayan, Pulickel M.
TI Covalently bonded three-dimensional carbon nanotube solids via boron
   induced nanojunctions
SO SCIENTIFIC REPORTS
LA English
DT Article
ID CHEMICAL-VAPOR-DEPOSITION; NI PHTHALOCYANINE; HYDROGEN STORAGE;
   FIELD-EMISSION; GROWTH; NITROGEN; TEMPERATURE; NANOSTRUCTURES;
   REDUCTION; SULFUR
AB The establishment of covalent junctions between carbon nanotubes (CNTs) and the modification of their straight tubular morphology are two strategies needed to successfully synthesize nanotube-based three-dimensional (3D) frameworks exhibiting superior material properties. Engineering such 3D structures in scalable synthetic processes still remains a challenge. This work pioneers the bulk synthesis of 3D macroscale nanotube elastic solids directly via a boron-doping strategy during chemical vapour deposition, which influences the formation of atomic-scale "elbow" junctions and nanotube covalent interconnections. Detailed elemental analysis revealed that the "elbow" junctions are preferred sites for excess boron atoms, indicating the role of boron and curvature in the junction formation mechanism, in agreement with our first principle theoretical calculations. Exploiting this material's ultra-light weight, super-hydrophobicity, high porosity, thermal stability, and mechanical flexibility, the strongly oleophilic sponge-like solids are demonstrated as unique reusable sorbent scaffolds able to efficiently remove oil from contaminated seawater even after repeated use.
C1 [Terrones, Mauricio] Penn State Univ, Dept Phys, Dept Mat Sci & Engn, University Pk, PA 16802 USA.
   [Romo-Herrera, Jose M.] Univ Vigo, Dept Quim & Fis, CSIC, Vigo 3610, Spain.
   [Romo-Herrera, Jose M.] Univ Vigo, Unidad Asociada, CSIC, Vigo 3610, Spain.
   [Hashim, Daniel P.; Narayanan, Narayanan T.; Hahm, Myung Gwan; Vajtai, Robert; Ajayan, Pulickel M.] Rice Univ, Dept Mech Engn & Mat Sci, Houston, TX 77251 USA.
   [Terrones, Mauricio] Penn State Univ, Mat Res Inst, University Pk, PA 16802 USA.
   [Terrones, Mauricio] Shinshu Univ, Res Ctr Exot Nanocarbons JST, Nagano 3808553, Japan.
   [Cullen, David A.] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA.
   [Lezzi, Peter] Rensselaer Polytech Inst, Dept Mat Sci Engn, Troy, NY USA.
   [Suttle, Joseph R.] Rice Univ, Dept Phys, Houston, TX 77251 USA.
   [Kelkhoff, Doug] Univ Illinois, Dept Mat Sci Engn, Urbana, IL 61801 USA.
   [Munoz-Sandoval, E.] CNM CSIC, Inst Microelect Madrid, Newton 8, Tres Cantos, Spain.
   [Ganguli, Sabyasachi; Roy, Ajit K.] USAF, Res Lab, Wright Patterson AFB, OH 45433 USA.
   [Smith, David J.] Arizona State Univ, Dept Phys, Tempe, AZ 85287 USA.
   [Sumpter, Bobby G.; Terrones, Humberto] Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Oak Ridge, TN 37831 USA.
   [Meunier, Vincent] Rensselaer Polytech Inst, Dept Phys Appl Phys & Astron, Troy, NY 12180 USA.
   [Terrones, Humberto] Catholic Univ Louvain, Inst Condensed Matter & Nanosci, B-1348 Louvain, Belgium.
RP Terrones, M (reprint author), Penn State Univ, Dept Phys, Dept Mat Sci & Engn, 104 Davey Lab, University Pk, PA 16802 USA.
EM mut11@psu.edu; ajayan@rice.edu
RI Hahm, Myung Gwan/D-6789-2011; Hashim, Daniel/F-6323-2011; Sumpter,
   Bobby/C-9459-2013; Meunier, Vincent/F-9391-2010; Microelectronica de
   Madrid, Instituto de/D-5173-2013; Hashim, Daniel/H-1694-2013; Terrones,
   Mauricio/B-3829-2014; Cullen, David/A-2918-2015; Munoz-Sandoval,
   Emilio/N-1059-2014
OI Hahm, Myung Gwan/0000-0002-6432-0578; Sumpter,
   Bobby/0000-0001-6341-0355; Meunier, Vincent/0000-0002-7013-179X;
   Microelectronica de Madrid, Instituto de/0000-0003-4211-9045; Cullen,
   David/0000-0002-2593-7866; Munoz-Sandoval, Emilio/0000-0002-6095-4119
FU National Science Foundation [0940902]; DOD: Air Force Office of
   Scientific Research [FA9550-12-1-0035]; ARL/ARO [W911NF]; Ecole
   Polytechnique of Louvain; Center for Nanophase Materials Science (CNMS)
   of Oak Ridge National Laboratory; JST-Japan; Center for Nanophase
   Materials Sciences; Office of Basic Energy Sciences at Oak Ridge
   National Laboratory, U.S. Department of Energy; New York State under
   NYSTAR [C080117]
FX This material is based upon work supported by the National Science
   Foundation Graduate Research Fellowship under Grant No. 0940902 awarded
   to D.P. Hashim. P.M. Ajayan, M. Terrones, and N. T. Narayanan
   acknowledge funding sponsorship from the DOD: Air Force Office of
   Scientific Research for the Project MURI: Synthesis and Characterization
   of 3D Carbon Nanotube Solid Networks Award No.: FA9550-12-1-0035. M.G.
   Hahm, and R. Vajtai acknowledge financial support from ARL/ARO (No.
   W911NF). Special thanks to Daniel Ramirez-Gonzalez for technical
   support. The authors gratefully acknowledge use of facilities within the
   John M. Cowley Center for High Resolution Electron Microscopy at Arizona
   State University. H. Terrones acknowledges support as visiting professor
   from the Ecole Polytechnique of Louvain, and of the Center for Nanophase
   Materials Science (CNMS) of Oak Ridge National Laboratory. M. Terrones
   thanks JST-Japan for funding the Research Center for Exotic NanoCarbons,
   under the Japanese regional Innovation Strategy Program by the
   Excellence. B. G. Sumpter was supported by the Center for Nanophase
   Materials Sciences, which is sponsored by the Office of Basic Energy
   Sciences at Oak Ridge National Laboratory, U.S. Department of Energy.
   Some of the calculations were performed using resources of the Oak Ridge
   Leadership Computing Facility and the National Center for Computational
   Sciences. V.M. was supported in part by the New York State under NYSTAR
   contract C080117.
NR 40
TC 115
Z9 116
U1 11
U2 141
PU NATURE PUBLISHING GROUP
PI LONDON
PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND
SN 2045-2322
J9 SCI REP-UK
JI Sci Rep
PD APR 13
PY 2012
VL 2
AR 363
DI 10.1038/srep00363
PG 8
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA 925PS
UT WOS:000302773900001
PM 22509463
ER

PT J
AU Castle, KJ
   Black, LA
   Simione, MW
   Dodd, JA
AF Castle, Karen J.
   Black, Labe A.
   Simione, Michael W.
   Dodd, James A.
TI Vibrational relaxation of CO2(nu(2)) by O(P-3) in the 142-490 K
   temperature range
SO JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
LA English
DT Article
ID CO2 15-MU-M EMISSION; LOWER THERMOSPHERE; UPPER-ATMOSPHERE; ATOMIC
   OXYGEN; RATE-CONSTANT; MU-M; COLLISIONS; CO2(010); MODEL; DEACTIVATION
AB Laboratory measurements of the quenching of CO2(nu(2)) by O atoms are presented over the 142-490 K temperature range relevant to the 75-120 km altitude region of the terrestrial atmosphere. The primary cooling mechanism in this region occurs when CO2 is efficiently excited through collisions with ambient O atoms, populating the bending vibrational (nu(2)) modes. A significant fraction of the vibrationally excited CO2 relaxes through spontaneous 15-mu m emission that escapes into space, thereby removing kinetic energy from this region of the atmosphere and generating a local cooling effect. The rate coefficient for the vibrational relaxation of CO2(nu(2)) by O atoms, k(O)(nu(2)), is measured using transient diode laser absorption spectroscopy. A slight negative temperature dependence is observed for k(O)(v(2)), with values ranging from 2.7 (+/- 0.4) x 10(-12) cm(3) s(-1) at 142 K to 1.3 (+/- 0.2) x 10(-12) cm(3) s(-1) at 490 k.
C1 [Castle, Karen J.; Black, Labe A.; Simione, Michael W.] Bucknell Univ, Dept Chem, Lewisburg, PA 17837 USA.
   [Dodd, James A.] USAF, Res Lab, Space Vehicles Directorate, Kirtland AFB, NM 87117 USA.
RP Castle, KJ (reprint author), Bucknell Univ, Dept Chem, 317 Rooke Chem Bldg, Lewisburg, PA 17837 USA.
EM kcastle@bucknell.edu
FU NASA; Camille and Henry Dreyfus Faculty
FX This work was supported by the NASA Geospace Science program. KJC
   gratefully acknowledges a Camille and Henry Dreyfus Faculty Start-up
   Award and thanks Michael Cecchini, Tricia Clyde, Alex Kowler, and
   Michael Brignone for their assistance. JAD thanks Richard Copeland (SRI
   International) for advice on the reaction cell design, and Mar a Pilar
   de Lara Castells (Instituto de Matematicas y Fisica Fundamental) for
   providing insight into the theory results.
NR 36
TC 8
Z9 8
U1 0
U2 10
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 12
PY 2012
VL 117
AR A04310
DI 10.1029/2012JA017519
PG 6
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 926ZD
UT WOS:000302872400005
ER

PT J
AU Wise, JO
   Burke, WJ
   Sutton, EK
AF Wise, J. O.
   Burke, W. J.
   Sutton, E. K.
TI Globally averaged exospheric temperatures derived from CHAMP and GRACE
   accelerometer measurements
SO JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
LA English
DT Article
ID SATELLITE MEASUREMENTS; ATMOSPHERIC DENSITY; ART.; THERMOSPHERE;
   COEFFICIENTS; DECREASE
AB Neutral densities (rho) inferred from accelerometer measurements on the polar-orbiting Challenging Minisatellite Payload (CHAMP) and Gravity Recovery and Climate Experiment (GRACE) satellites are used to compile exospheric temperatures (T-infinity) during extended periods in 2003 and 2004 when their orbital planes were nearly parallel and at quadrature, respectively. Exospheric temperatures were first estimated using rho-h-T-infinity relationships implicit within the Jacchia models, then averaged over individual orbits. We found good agreement between the orbital-averaged T-infinity obtained from CHAMP and GRACE accelerometer data as well as with globally averaged exospheric temperatures derived from drag measurements from the constellation of satellites used in the High-Accuracy Satellite Drag Model. Our analysis corrects a critical conjecture by Burke (2008) that globally averaged T-infinity is essentially the same as orbit-averaged values obtained by polar-orbiting satellites, independent of the local time of their orbital planes. Unlike the symmetric 0200-1400 LT distribution of T-infinity minima and maxima found in early Jacchia models, presented data indicate that the minima are located closer to the dawn meridian. We also demonstrate that the averaging technique used to estimate T-infinity affects the outcomes. Statistical analyses provide an empirical basis for improving estimates of the thermosphere's total energy budget.
C1 [Wise, J. O.; Burke, W. J.; Sutton, E. K.] USAF, Space Vehicles Directorate, Space Weather Ctr Excellence, Res Lab, Kirtland AFB, NM 87117 USA.
   [Burke, W. J.] Boston Coll, Inst Sci Res, Chestnut Hill, MA 02167 USA.
RP Wise, JO (reprint author), USAF, Space Vehicles Directorate, Space Weather Ctr Excellence, Res Lab, 3671 Aberdeen Ave SE, Kirtland AFB, NM 87117 USA.
EM john.wise@kirtland.af.mil
RI Sutton, Eric/A-1574-2016
OI Sutton, Eric/0000-0003-1424-7189
FU Air Force Office of Scientific Research [2311SDA5]; AF
   [FA8718-08-C-0012]; Boston College
FX Support for the present work was provided by the Air Force Office of
   Scientific Research, Task 2311SDA5, and by AF contract FA8718-08-C-0012
   with Boston College. We wish to thank Sean Bruinsma for providing the
   CHAMP measurements and Susan Delay of Boston College for providing
   orbit-averaged densities.
NR 32
TC 2
Z9 3
U1 0
U2 3
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 12
PY 2012
VL 117
AR A04312
DI 10.1029/2011JA017108
PG 13
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 926ZD
UT WOS:000302872400001
ER

PT J
AU Patwardhan, SV
   Emami, FS
   Berry, RJ
   Jones, SE
   Naik, RR
   Deschaume, O
   Heinz, H
   Perry, CC
AF Patwardhan, Siddharth V.
   Emami, Fateme S.
   Berry, Rajiv J.
   Jones, Sharon E.
   Naik, Rajesh. R.
   Deschaume, Olivier
   Heinz, Hendrik
   Perry, Carole C.
TI Chemistry of Aqueous Silica Nanoparticle Surfaces and the Mechanism of
   Selective Peptide Adsorption
SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Article
ID SUM-FREQUENCY GENERATION; HEAD GROUP-STRUCTURE; MOLECULAR-DYNAMICS;
   FORCE-FIELD; AMINO-ACIDS; ELECTROLYTE INTERFACE; INORGANIC MATERIALS;
   BINDING PEPTIDES; CHARGE DENSITY; PHAGE DISPLAY
AB Control over selective recognition of biomolecules on inorganic nanoparticles is a major challenge for the synthesis of new catalysts, functional carriers for therapeutics, and assembly of renewable biobased materials. We found low sequence similarity among sequences of peptides strongly attracted to amorphous silica nanoparticles of various size (15-450 nm) using combinatorial phage display methods. Characterization of the surface by acid base titrations and zeta potential measurements revealed that the acidity of the silica particles increased with larger particle size, corresponding to between 5% and 20% ionization of silanol groups at pH 7. The wide range of surface ionization results in the attraction of increasingly basic peptides to increasingly acidic nanoparticles, along with major changes in the aqueous interfacial layer as seen in molecular dynamics simulation. We identified the mechanism of peptide adsorption using binding assays, zeta potential measurements, IR spectra, and molecular simulations of the purified peptides (without phage) in contact with uniformly sized silica particles. Positively charged peptides are strongly attracted to anionic silica surfaces by ion pairing of protonated N-termini, Lys side chains, and Arg side chains with negatively charged siloxide groups. Further, attraction of the peptides to the surface involves hydrogen bonds between polar groups in the peptide with silanol and siloxide groups on the silica surface, as well as ion-dipole, dipole-dipole, and van-der-Waals interactions. Electrostatic attraction between peptides and particle surfaces is supported by neutralization of zeta potentials, an inverse correlation between the required peptide concentration for measurable adsorption and the peptide pI, and proximity of cationic groups to the surface in the computation. The importance of hydrogen bonds and polar interactions is supported by adsorption of noncationic peptides containing Ser, His, and Asp residues, including the formation of multilayers. We also demonstrate tuning of interfacial interactions using mutant peptides with an excellent correlation between adsorption measurements, zeta potentials, computed adsorption energies, and the proposed binding mechanism. Follow-on questions about the relation between peptide adsorption on silica nanoparticles and mineralization of silica from peptide-stabilized precursors are raised.
C1 [Patwardhan, Siddharth V.; Deschaume, Olivier; Perry, Carole C.] Nottingham Trent Univ, Interdisciplinary Biomed Res Ctr, Sch Sci & Technol, Nottingham NG11 8NS, England.
   [Patwardhan, Siddharth V.] Univ Strathclyde, Dept Chem & Proc Engn, Glasgow G1 1XJ, Lanark, Scotland.
   [Emami, Fateme S.; Heinz, Hendrik] Univ Akron, Dept Polymer Engn, Akron, OH 44325 USA.
   [Berry, Rajiv J.; Jones, Sharon E.; Naik, Rajesh. R.] USAF, Mat & Mfg Directorate, Res Lab, Wright Patterson AFB, OH 45433 USA.
   [Deschaume, Olivier] Catholic Univ Louvain, Unite POLY, B-1348 Louvain, Belgium.
RP Perry, CC (reprint author), Nottingham Trent Univ, Interdisciplinary Biomed Res Ctr, Sch Sci & Technol, Nottingham NG11 8NS, England.
EM hendrik.heinz@uakron.edu; carole.perry@ntu.ac.uk
RI Patwardhan, Siddharth/B-5037-2009; Heinz, Hendrik/E-3866-2010
OI Patwardhan, Siddharth/0000-0002-4958-8840; Heinz,
   Hendrik/0000-0002-6776-7404
FU US-AFOSR [FA 9550-06-1-0154, FA 9550-10-1-0024]; Royal Society
   [CG072089]; Air Force Research Laboratory, Wright-Patterson AFB (WPAFB);
   National Science Foundation [DMR-0955071]; University of Akron; Ohio
   Department of Development
FX We acknowledge support from the US-AFOSR (FA 9550-06-1-0154 and FA
   9550-10-1-0024), the Royal Society (CG072089), the Air Force Research
   Laboratory, Wright-Patterson AFB (WPAFB), the National Science
   Foundation (DMR-0955071), the University of Akron, the Ohio Department
   of Development, as well as the allocation of computer resources at the
   Ohio Supercomputing Center and at WPAFB. We thank Dr. Paul Roach for
   kindly providing silica samples, Ms. Yulia Nigmatulina for help in
   developing peptide quantification assays, Dr. Joe Slocik, AFRL for XPS
   analysis and Dr. Valeria Puddu and Dr. David J. Belton for numerous
   helpful discussions.
NR 96
TC 127
Z9 129
U1 19
U2 285
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0002-7863
J9 J AM CHEM SOC
JI J. Am. Chem. Soc.
PD APR 11
PY 2012
VL 134
IS 14
BP 6244
EP 6256
DI 10.1021/ja211307u
PG 13
WC Chemistry, Multidisciplinary
SC Chemistry
GA 922CQ
UT WOS:000302524800034
PM 22435500
ER

PT J
AU Xue, CM
   Xu, YQ
   Pang, Y
   Yu, DS
   Dai, LM
   Gao, M
   Urbas, A
   Li, Q
AF Xue, Chenming
   Xu, Yongqian
   Pang, Yi
   Yu, Dingshan
   Dai, Liming
   Gao, Min
   Urbas, Augustine
   Li, Quan
TI Organo-Soluble Porphyrin Mixed Monolayer-Protected Gold Nanorods with
   Intercalated Fullerenes
SO LANGMUIR
LA English
DT Article
ID NANOPARTICLES; CHEMISTRY; NANOCLUSTERS; AU(111)
AB Organo-soluble porphyrin mixed monolayer-protected gold nanorods were synthesized and characterized. The resulting gold nanorods encapsulated by both porphyrin thiol and alkyl thiol on their entire surface with strong covalent Au-S linkages were very stable in organic solvents without aggregation or decomposition and exhibited unique optical properties different from their corresponding spherical ones. Alkyl thiol acts as a stabilizer not only to fill up the potential space on gold nanorod surface between bulky porphyrin molecules but also to provide space for further insertion of C-60 molecules forming a stable C-60-porphyrin-gold nanorod hybrid nanostructure.
C1 [Xue, Chenming; Gao, Min; Li, Quan] Kent State Univ, Inst Liquid Crystal, Kent, OH 44242 USA.
   [Xu, Yongqian; Pang, Yi] Univ Akron, Dept Chem, Akron, OH 44325 USA.
   [Xu, Yongqian; Pang, Yi] Univ Akron, Maurice Morton Inst Polymer Sci, Akron, OH 44325 USA.
   [Yu, Dingshan; Dai, Liming] Case Western Reserve Univ, Dept Chem Engn, Cleveland, OH 44106 USA.
   [Urbas, Augustine] USAF, Mat & Mfg Directorate, Res Lab, Wright Patterson AFB, OH 45433 USA.
RP Li, Q (reprint author), Kent State Univ, Inst Liquid Crystal, Kent, OH 44242 USA.
EM qlil@kent.edu
RI Yu, Dingshan/C-8881-2014; 
OI Yu, Dingshan/0000-0002-7650-5131; Yu, Dingshan/0000-0002-2913-2432
FU Air Force Office of Scientific Research (AFOSR) [FA9550-09-1-0254]; Ohio
   Research Scholars Program Research Cluster on Surfaces in Advanced
   Materials
FX This work was supported by the Air Force Office of Scientific Research
   (AFOSR FA9550-09-1-0254). Discussions with X. Ma and Y. Li are
   acknowledged. The TEM data were obtained at the (cryo) TEM facility at
   the Liquid Crystal Institute, Kent State University, supported by the
   Ohio Research Scholars Program Research Cluster on Surfaces in Advanced
   Materials.
NR 36
TC 24
Z9 24
U1 3
U2 34
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0743-7463
J9 LANGMUIR
JI Langmuir
PD APR 10
PY 2012
VL 28
IS 14
BP 5956
EP 5963
DI 10.1021/la300096n
PG 8
WC Chemistry, Multidisciplinary; Chemistry, Physical; Materials Science,
   Multidisciplinary
SC Chemistry; Materials Science
GA 921YU
UT WOS:000302514800009
PM 22424109
ER

PT J
AU Nepal, D
   Park, K
   Vaia, RA
AF Nepal, Dhriti
   Park, Kyoungweon
   Vaia, Richard A.
TI High-Yield Assembly of Soluble and Stable Gold Nanorod Pairs for
   High-Temperature Plasmonics
SO SMALL
LA English
DT Article
DE gold; dimers; nanostructures; self-assembly; thermal stability
ID MELTING TEMPERATURE; NANOPARTICLE SUPERLATTICES; SIZE; SILICA; GROWTH;
   DIMERS; SHAPE; DNA; SURFACTANT; PARTICLES
AB Colloidal synthetic approaches to discrete, soluble plasmonic architectures, such as nanorod pairs, offer numerous advantages relative to lithographic techniques, including compositionally asymmetric structures, atomically smooth surfaces, and continuous fabrication. Density-driven colloidal assembly, such as by solvent evaporation, produces some intriguing structures, e.g., particle chains; however, controllability and post-processibility of the final architecture is inadequate. Also the limited quantity of product nominally comprises a broad distribution of assembly size and type. Herein, the high-yield formation of soluble, stable, and compositionally discrete gold nanorod (Au NR) architectures by inducingthen arrestingflocculation is demonstrated using bifunctional nanorods and reversible modulation of solvent quality to deplete and reassemble an electrostatic stabilization layer, thereby eliminating the need for an additional encapsulant. Analogous to dimer formation during step-growth polymerization, the initial yield of Au nanorod side-by-side pairs can be greater than 50%. The high solubility and stability of the assembly enable purification, scale-up of nanomolarity solutions, and subsequent chemical modification of the assembled product. As an example, in situ silica deposition via Stober synthesis onto the assembled pair produces highly processable nanostructures with a single pair of embedded Au NRs at their center, which exhibit thermal stability at temperatures in excess of 700 degrees C.
C1 [Nepal, Dhriti; Park, Kyoungweon; Vaia, Richard A.] USAF, Mat & Mfg Directorate, Res Lab, Wright Patterson AFB, OH 45433 USA.
RP Vaia, RA (reprint author), USAF, Mat & Mfg Directorate, Res Lab, Wright Patterson AFB, OH 45433 USA.
EM richard.vaia@wpafb.af.mil
FU Air Force Office of Scientific Research; Air Force Research Laboratory
   Materials & Manufacturing Directorate
FX The authors are grateful to the Air Force Office of Scientific Research,
   and Air Force Research Laboratory Materials & Manufacturing Directorate
   for financial support, and acknowledges Robert Wheeler for his
   assistance with the in situ TEM study.
NR 53
TC 26
Z9 26
U1 4
U2 127
PU WILEY-V C H VERLAG GMBH
PI WEINHEIM
PA POSTFACH 101161, 69451 WEINHEIM, GERMANY
SN 1613-6810
EI 1613-6829
J9 SMALL
JI Small
PD APR 10
PY 2012
VL 8
IS 7
BP 1013
EP 1020
DI 10.1002/smll.201102152
PG 8
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 921IK
UT WOS:000302471100011
PM 22307829
ER

PT J
AU Feng, J
   Slocik, JM
   Sarikaya, M
   Naik, RR
   Farmer, BL
   Heinz, H
AF Feng, Jie
   Slocik, Joseph M.
   Sarikaya, Mehmet
   Naik, Rajesh R.
   Farmer, Barry L.
   Heinz, Hendrik
TI Influence of the Shape of Nanostructured Metal Surfaces on Adsorption of
   Single Peptide Molecules in Aqueous Solution
SO SMALL
LA English
DT Article
DE peptides; metal nanostructures; self-assembly; therapeutics; simulation
ID DENSITY-FUNCTIONAL THEORY; GOLD NANOPARTICLES; DYNAMICS SIMULATIONS;
   STRUCTURE PREDICTION; LAYERED SILICATES; BINDING PEPTIDES; NANOCRYSTALS;
   INTERFACES; TEMPLATES; PROTEINS
AB Self-assembly and function of biologically modified metal nanostructures depend on surface-selective adsorption; however, the influence of the shape of metal surfaces on peptide adsorption mechanisms has been poorly understood. The adsorption of single peptide molecules in aqueous solution (Tyr12, Ser12, A3, Flg-Na3) is investigated on even {111} surfaces, stepped surfaces, and a 2 nm cuboctahedral nanoparticle of gold using molecular dynamics simulation with the CHARMM-METAL force field. Strong and selective adsorption is found on even surfaces and the inner edges of stepped surfaces (20 to 60 kcal/mol peptide) in contrast to weaker and less selective adsorption on small nanoparticles (15 to 25 kcal/mol peptide). Binding and selectivity appear to be controlled by the size of surface features and the extent of co-ordination of epitaxial sites by polarizable atoms (N, O, C) along the peptide chain. The adsorption energy of a single peptide equals a fraction of the sum of the adsorption energies of individual amino acids that is characteristic of surface shape, epitaxial pattern, and conformation constraints (often beta-strand and random coil). The proposed adsorption mechanism is supported and critically evaluated by earlier sequence data from phage display, dissociation constants of small proteins as a function of nanoparticle size, and observed shapes of peptide-stabilized nanoparticles. Understanding the interaction of single peptides with shaped metal surfaces is a key step towards control over self-organization of multiple peptides on shaped metal surfaces and the assembly of superstructures from nanostructures.
C1 [Feng, Jie; Heinz, Hendrik] Univ Akron, Dept Polymer Engn, Akron, OH 44325 USA.
   [Slocik, Joseph M.; Naik, Rajesh R.; Farmer, Barry L.] USAF, Mat & Mfg Directorate, Res Lab, Dayton, OH 45435 USA.
   [Sarikaya, Mehmet] Univ Washington, Dept Mat Sci & Engn, GEMSEC, Seattle, WA 98195 USA.
RP Heinz, H (reprint author), Univ Akron, Dept Polymer Engn, Akron, OH 44325 USA.
EM hendrik.heinz@uakron.edu
RI Mahapatra, Indrani/D-7506-2011; Heinz, Hendrik/E-3866-2010
OI Heinz, Hendrik/0000-0002-6776-7404
FU Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio;
   National Science Foundation [DMR-0955071]; University of Akron;
   NSF-MRSEC at the University of Washington
FX We are grateful for support by the Air Force Research Laboratory,
   Wright-Patterson Air Force Base, Ohio, the National Science Foundation
   (DMR-0955071), and the University of Akron. MS acknowledges support by
   NSF-MRSEC at the University of Washington. We also acknowledge the Ohio
   Supercomputing Center for the generous allocation of computer resources.
NR 72
TC 51
Z9 51
U1 12
U2 126
PU WILEY-V C H VERLAG GMBH
PI WEINHEIM
PA PO BOX 10 11 61, D-69451 WEINHEIM, GERMANY
SN 1613-6810
J9 SMALL
JI Small
PD APR 10
PY 2012
VL 8
IS 7
BP 1049
EP 1059
DI 10.1002/smll.201102066
PG 11
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 921IK
UT WOS:000302471100015
PM 22323430
ER

PT J
AU Richards, BC
   Hendrickson, J
   Olitzky, JD
   Gibson, R
   Gehl, M
   Kieu, K
   Khankhoje, UK
   Homyk, A
   Scherer, A
   Kim, JY
   Lee, YH
   Khitrova, G
   Gibbs, HM
AF Richards, B. C.
   Hendrickson, J.
   Olitzky, J. D.
   Gibson, R.
   Gehl, M.
   Kieu, K.
   Khankhoje, U. K.
   Homyk, A.
   Scherer, A.
   Kim, J-Y
   Lee, Y-H
   Khitrova, G.
   Gibbs, H. M.
TI Characterization of 1D photonic crystal nanobeam cavities using curved
   microfiber (vol 18, pg 20558, 2010)
SO OPTICS EXPRESS
LA English
DT Correction
AB An error was made in the calculation of the photonic crystal mode volume. Fixing this error increases our mode volumes by a factor of two and makes our claim of highest Q/V invalid. (C)2010 Optical Society of America
C1 [Richards, B. C.] EMCORE Corp, Adv Concepts Team, Albuquerque, NM 87123 USA.
   [Hendrickson, J.] USAF, Res Lab, Sensors Directorate, Wright Patterson AFB, OH 45433 USA.
   [Olitzky, J. D.; Gibson, R.; Gehl, M.; Kieu, K.; Khitrova, G.; Gibbs, H. M.] Univ Arizona, Coll Opt Sci, Tucson, AZ 85721 USA.
   [Khankhoje, U. K.] CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA.
   [Homyk, A.; Scherer, A.] CALTECH, Elect Engn & Kavli Nanosci Inst, Pasadena, CA 91125 USA.
   [Kim, J-Y; Lee, Y-H] Korea Adv Inst Sci & Technol, Dept Phys, Taejon 305701, South Korea.
RP Richards, BC (reprint author), EMCORE Corp, Adv Concepts Team, Albuquerque, NM 87123 USA.
EM mgehl@optics.arizona.edu
RI Lee, Yong Hee/C-2015-2011
NR 2
TC 0
Z9 0
U1 0
U2 0
PU OPTICAL SOC AMER
PI WASHINGTON
PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA
SN 1094-4087
J9 OPT EXPRESS
JI Opt. Express
PD APR 9
PY 2012
VL 20
IS 8
BP 9226
EP 9226
DI 10.1364/OE.20.009226
PG 1
WC Optics
SC Optics
GA 926TT
UT WOS:000302855500101
ER

PT J
AU Gordon, MK
   Raman, L
   Hahn, RA
   Schlager, JJ
   Babin, MC
   Gerecke, DR
   Svoboda, KKH
AF Gordon, Marion K.
   Raman, Lakshmi
   Hahn, Rita A.
   Schlager, John J.
   Babin, Michael C.
   Gerecke, Donald R.
   Svoboda, Kathy K. H.
TI Vesicant-Induced Autophagy
SO FASEB JOURNAL
LA English
DT Meeting Abstract
CT Experimental Biology Meeting
CY APR 21-25, 2012
CL San Diego, CA
C1 [Gordon, Marion K.; Raman, Lakshmi; Hahn, Rita A.; Gerecke, Donald R.] Rutgers State Univ, Piscataway, NJ USA.
   [Schlager, John J.] USAF, Appl Biotechnol Branch, Res Lab, Dayton, OH USA.
   [Babin, Michael C.] Battelle Biomed Res Ctr, W Jefferson, OH USA.
   [Svoboda, Kathy K. H.] Baylor Coll Dent, Dallas, TX 75246 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 2012
VL 26
PG 1
WC Biochemistry & Molecular Biology; Biology; Cell Biology
SC Biochemistry & Molecular Biology; Life Sciences & Biomedicine - Other
   Topics; Cell Biology
GA 032IZ
UT WOS:000310711306082
ER

PT J
AU Racz, L
   Muller, JG
   Goel, RK
AF Racz, LeeAnn
   Muller, James G.
   Goel, Ramesh K.
TI Fate of selected estrogens in two laboratory scale sequencing batch
   reactors fed with different organic carbon sources under varying solids
   retention times
SO BIORESOURCE TECHNOLOGY
LA English
DT Article
DE Estrogens; Nitrification; Wastewater treatment; Solids retention time
   (SRT); Microbial community structure
ID NITRIFYING ACTIVATED-SLUDGE; WASTE-WATER TREATMENT; AMMONIA OXIDIZING
   BACTERIA; PERSONAL CARE PRODUCTS; SEWAGE-TREATMENT PLANT; MIXED CULTURE;
   ENDOCRINE DISRUPTORS; MASS-SPECTROMETRY; ETHINYL ESTRADIOL; DEGRADATION
AB This study compared the performances of two laboratory-scale sequencing batch reactors to remove 17 beta-estradiol and 17 alpha-ethinyl estradiol. Both SBRs were operated to achieve organic carbon oxidation and nitrification. However, the overall bacterial population in both SBRs was targeted to be different by feeding the SBRs with peptone and glucose. Furthermore, the reactors were also run at different solid retention times (SRTs) to evaluate the effect of SRI on estrogen removal. The more diverse heterotrophic and ammonia oxidizing bacterial community in the peptone fed SBR1 had superior estrogen removal than the glucose fed SBR 2 which enriched less diverse community, particularly for 17 alpha-ethinyl estradiol. Under a solids retention time (SRT) of 40 days, the total 17 beta-estradiol mass was 30% of the amount under the SRT of 20 days, and the total 17 alpha-ethinyl estradiol mass was likewise 40% of the amount under the shorter SRT. Published by Elsevier Ltd.
C1 [Goel, Ramesh K.] Univ Utah, Dept Civil & Environm Engn, Salt Lake City, UT 84112 USA.
   [Racz, LeeAnn] USAF, Inst Technol, Wright Patterson AFB, OH 45433 USA.
   [Muller, James G.] Univ Utah, Dept Chem, Salt Lake City, UT 84112 USA.
RP Goel, RK (reprint author), Univ Utah, Dept Civil & Environm Engn, Ste 104,122 S Cent Campus Dr, Salt Lake City, UT 84112 USA.
EM leeann.racz@afit.edu; jmuller@chem.utah.edu; rgoel@civil.utah.edu
NR 42
TC 13
Z9 15
U1 3
U2 33
PU ELSEVIER SCI LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
SN 0960-8524
J9 BIORESOURCE TECHNOL
JI Bioresour. Technol.
PD APR
PY 2012
VL 110
BP 35
EP 42
DI 10.1016/j.biortech.2012.01.059
PG 8
WC Agricultural Engineering; Biotechnology & Applied Microbiology; Energy &
   Fuels
SC Agriculture; Biotechnology & Applied Microbiology; Energy & Fuels
GA 966QO
UT WOS:000305852700005
PM 22382291
ER

PT J
AU Haley, JE
   Su, WJ
   Singh, KM
   Monahan, JL
   Slagle, JE
   McLean, DG
   Cooper, TM
AF Haley, Joy E.
   Su, Weijie
   Singh, Kristi M.
   Monahan, Jennifer L.
   Slagle, Jonathan E.
   McLean, Daniel G.
   Cooper, Thomas M.
TI Effect of beta-bromo substitution on the photophysical properties of
   meso-phenyl, meso-carbazole, and meso-triphenylamine porphyrins
SO JOURNAL OF PORPHYRINS AND PHTHALOCYANINES
LA English
DT Article
DE triplet excited state; brominated porphyrins; electron
   donating/withdrawing substitution
ID ULTRAFAST DYNAMICS; ELECTRONIC-SPECTRA; CONDENSED-PHASE;
   TETRAPHENYLPORPHYRINS; DERIVATIVES; COMPLEXES; ZINC;
   TETRAALKYLPORPHYRINS; METAL
AB We present results of an experimental photophysical study of a series of novel brominated and non-brominated porphyrins that contain phenyl, carbazole, or triphenylamine in the meso-position. In addition we have looked at the effects of incorporating a zinc metal into the porphyrin system relative to the free base. Structure-property relationships are established using various absorption and emission techniques including femtosecond pump probe transient absorption and nanosecond laser flash photolysis. With slightly increasing electron donating strength (phenyl < carbazole < triphenylamine) red shifts were observed in all data. The same effect was observed upon the addition of bromine in the beta position. Due to the heavy atom affect of the bromines both the singlet and triplet excited state lifetimes were significantly shorter in the brominated porphyrins. For the T-1-T-n absorption data we observe a large absorption in the near infrared region with the brominated carbazole and triphenylamine. The largest effect of the addition of zinc was in the ground state absorption and emission where a blue shift in the data was observed. Some effects were also observed in the kinetic decays with zinc as the metal compared to the free base porphyrins.
C1 [Haley, Joy E.; Su, Weijie; Singh, Kristi M.; Monahan, Jennifer L.; Slagle, Jonathan E.; McLean, Daniel G.; Cooper, Thomas M.] USAF, Mat & Mfg Directorate, Res Lab, Wright Patterson AFB, OH 45433 USA.
   [Su, Weijie] Gen Dynam Informat Technol, Dayton, OH 45431 USA.
   [Singh, Kristi M.] Universal Energy Syst Inc, Dayton, OH 45432 USA.
   [Monahan, Jennifer L.] SW Ohio Council Higher Educ, Dayton, OH 45420 USA.
   [Slagle, Jonathan E.; McLean, Daniel G.] Sci Applicat Int Corp, Dayton, OH 45431 USA.
RP Haley, JE (reprint author), USAF, Mat & Mfg Directorate, Res Lab, Wright Patterson AFB, OH 45433 USA.
EM Joy.Haley@wpafb.af.mil
FU AFRL/RX [FA8650-04-C-5410, FA8650-09-D-5430]
FX We are thankful for the support of this work by AFRL/RX contracts
   FA8650-04-C-5410 for D. G. M. and J.E.S. and FA8650-09-D-5430 for K. M.
   S., and W. S. We would also like to thank Dr. Aaron R. Burke for NMR
   characterization.
NR 32
TC 4
Z9 4
U1 0
U2 18
PU WORLD SCI PUBL CO INC
PI HACKENSACK
PA 27 WARREN ST, STE 401-402, HACKENSACK, NJ 07601 USA
SN 1088-4246
J9 J PORPHYR PHTHALOCYA
JI J. Porphyr. Phthalocyanines
PD APR
PY 2012
VL 16
IS 4
BP 370
EP 379
DI 10.1142/S1088424612500381
PG 10
WC Chemistry, Multidisciplinary
SC Chemistry
GA 957JS
UT WOS:000305158300005
ER

PT J
AU McCauley, M
   Liebling-Kalifani, H
   Hughes, JH
AF McCauley, Mathew
   Liebling-Kalifani, Helen
   Hughes, Jamie Hacker
TI Military Mental Health Professionals On Operational Deployment: An
   Exploratory Study
SO COMMUNITY MENTAL HEALTH JOURNAL
LA English
DT Article
DE Military Mental Health; Operational Deployment; Occupational Stress
ID CLINICAL PSYCHOLOGISTS; IRAQ; GARRISON; ARMY; WAR
AB This exploratory study aimed to develop greater insight into the occupational and personal nature of the practice of mental healthcare on operational deployments. Twenty-eight British military mental health professionals were identified as having recently returned from deployment, with 35% agreeing to participate in semi-structured qualitative interviews. Results suggest that whilst this population have a range of stressors, their main concern is to work towards the success of the overall mission objectives, mainly through achieving their clinical goals. Such work is impacted by challenges such as ethical difficulties, professional obstacles, bonding with colleagues and personal issues. They do however rely upon a range of intra and inter-personal strategies to overcome these hurdles successfully. A number of suggestions for improved mental healthcare on deployment are also identified. A review of the implications of the findings is offered and recommendations for improved training and support for mental healthcare professionals are explored. Finally, potential avenues for future research are considered.
C1 [McCauley, Mathew] RAF Lakenheath, USAF, Behav Hlth Flight, Lakenheath IP279PN, England.
   [Liebling-Kalifani, Helen] Coventry Univ, Fac Hlth & Life Sci, Coventry CV1 5FB, W Midlands, England.
   [Hughes, Jamie Hacker] Minist Def, Joint Med Command, Whittington Barracks WS14 9PY, Lichfield, England.
RP McCauley, M (reprint author), RAF Lakenheath, USAF, Behav Hlth Flight, 48 MDOS SGOW, Lakenheath IP279PN, England.
EM mathew.mccauley@lakenheath.af.mil
NR 36
TC 3
Z9 3
U1 2
U2 3
PU SPRINGER
PI DORDRECHT
PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS
SN 0010-3853
J9 COMMUNITY MENT HLT J
JI Community Ment. Health J.
PD APR
PY 2012
VL 48
IS 2
BP 238
EP 248
DI 10.1007/s10597-011-9407-8
PG 11
WC Health Policy & Services; Public, Environmental & Occupational Health;
   Psychiatry
SC Health Care Sciences & Services; Public, Environmental & Occupational
   Health; Psychiatry
GA 955XL
UT WOS:000305054100016
PM 21559921
ER

PT J
AU Cipar, JJ
   Anderson, GP
   Cooley, TW
AF Cipar, John J.
   Anderson, Gail P.
   Cooley, Thomas W.
TI Temperature and Power Output of the Lava Lake in Halema'uma'u Crater,
   Hawaii, Using a Space-Based Hyperspectral Imager
SO IEEE JOURNAL OF SELECTED TOPICS IN APPLIED EARTH OBSERVATIONS AND REMOTE
   SENSING
LA English
DT Article
DE Hawaii; hyperspectral imaging; remote sensing; volcanic activity
ID INFRARED DATA; VOLCANO; FLOW; CHILE; FLUX
AB Space-based remote sensing has the potential to monitor volcanic activity on a global basis. We use infrared hyperspectral data measured from space to study the temperature field and power output for a long-lived lava lake at Halema'uma'u crater, Hawaii. Overflights were made on two days: a night collect October 16, 2009, and a day collect on December 27, 2009. The basic data are short-wave infrared (SWIR) optical spectra recorded in the 900-2500 nm wavelength range. Spectra in the lava lake show strongly elevated radiance at SWIR wavelengths. We illustrate how corrections are made to account for solar radiance in the day image and for atmospheric water vapor for both images. We assume that the spectrum at each pixel can be modeled as a linear combination of cool and hot components, weighted by the area of each component. The inversion uses an exhaustive search algorithm over all possible combinations of hot temperature and fractional area of the hot component, with the cool component set to ambient temperature. Temperature and fractional area calculations can be used to compute radiant flux (power) emitted from each pixel, and from the lake as a whole. Power output changes from 15.1 MW in October to 24.0 MW in December. Approximately 223 Kg/s (similar to 0.07 m(3)/s) of molten basalt is required to maintain the observed power output of the lava lake.
C1 [Cipar, John J.; Anderson, Gail P.; Cooley, Thomas W.] USAF, Space Vehicles Directorate, Res Lab, Kirtland AFB, NM 87117 USA.
RP Cipar, JJ (reprint author), USAF, Space Vehicles Directorate, Res Lab, Kirtland AFB, NM 87117 USA.
NR 19
TC 2
Z9 2
U1 2
U2 12
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 1939-1404
J9 IEEE J-STARS
JI IEEE J. Sel. Top. Appl. Earth Observ. Remote Sens.
PD APR
PY 2012
VL 5
IS 2
SI SI
BP 617
EP 624
DI 10.1109/JSTARS.2012.2184086
PG 8
WC Engineering, Electrical & Electronic; Geography, Physical; Remote
   Sensing; Imaging Science & Photographic Technology
SC Engineering; Physical Geography; Remote Sensing; Imaging Science &
   Photographic Technology
GA 949XW
UT WOS:000304612300025
ER

PT J
AU Scott-Emuakpor, O
   George, T
   Cross, C
   Wertz, J
   Shen, MHH
AF Scott-Emuakpor, Onome
   George, Tommy
   Cross, Charles
   Wertz, John
   Shen, M-H Herman
TI A new distortion energy-based equivalent stress for multiaxial fatigue
   life prediction
SO INTERNATIONAL JOURNAL OF NON-LINEAR MECHANICS
LA English
DT Article
DE Multiaxial; Non-linear strain energy; Fatigue
ID STRAIN-ENERGY; CRITERION; FAILURE
AB A new equivalent stress amplitude expression has been developed for the assessment of fatigue life in components under multiaxial loading. The expression was generated by incorporating non-linear/plastic stress-strain relation into a mechanical energy calculation, and then applying the calculation to the distortion energy theory for a cyclic loading case. Therefore, the new uniaxial equivalent stress expression determines an appropriate stress amplitude value for multiaxial cyclic loading. The purpose of the equivalent stress value is to determine multiaxial fatigue failure using an energy-based fatigue life prediction criterion. The governing understanding behind the criterion states that the physical damage quantity for failure is equal to the accumulated strain energy in a monotonic fracture, which is also equal to the accumulated strain energy during fatigue failure. Using the new equivalent stress amplitude expression and the energy-based life prediction method, a comparison is made between prediction results and multiaxial empirical data. The multiaxial data was acquired by a vibration-based biaxial bending fatigue test and a torsion fatigue test with an assumed axial misalignment. The results of the comparison provide encouragement regarding the capability of the newly developed equivalent stress amplitude expression for fatigue life prediction. Published by Elsevier Ltd.
C1 [Scott-Emuakpor, Onome; George, Tommy; Cross, Charles] USAF, Res Lab, Wright Patterson AFB, OH 45433 USA.
   [Wertz, John; Shen, M-H Herman] Ohio State Univ, Dept Mech & Aerosp Engn, Columbus, OH 43210 USA.
RP Scott-Emuakpor, O (reprint author), USAF, Res Lab, Wright Patterson AFB, OH 45433 USA.
EM onome.scott-emuakpor@wpafb.af.mil
FU Air Force Research Laboratories (AFRL), Turbine Engine Fatigue Facility
   (TEFF)
FX The authors would like to thank the Air Force Research Laboratories
   (AFRL), specifically the Turbine Engine Fatigue Facility (TEFF), for
   their financial support, facility and equipment access, and
   encouragement of this research.
NR 38
TC 9
Z9 9
U1 1
U2 21
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 APR
PY 2012
VL 47
IS 3
BP 29
EP 37
DI 10.1016/j.ijnonlinmec.2011.12.002
PG 9
WC Mechanics
SC Mechanics
GA 950ZB
UT WOS:000304689300004
ER

PT J
AU Ariyawansa, G
   Grupen, M
   Duran, JM
   Scheihing, JE
   Nelson, TR
   Eismann, MT
AF Ariyawansa, Gamini
   Grupen, Matt
   Duran, Joshua M.
   Scheihing, John E.
   Nelson, Thomas R.
   Eismann, Michael T.
TI Design and modeling of InAs/GaSb type II superlattice based dual-band
   infrared detectors
SO JOURNAL OF APPLIED PHYSICS
LA English
DT Article; Proceedings Paper
CT 56th Annual Conference on Magnetism and Magnetic Materials
CY OCT 30-30, 2011
CL Scottsdale, AZ
ID OPTICAL-ABSORPTION; ELECTRONIC-STRUCTURE; WAVELENGTH; HGCDTE;
   PHOTODIODES; INAS; GASB
AB The objective of this paper is to provide a credible analysis for predicting the spectral responsivity of InAs/GaSb/AlSb type-II superlattice (T2SL) based dual-band infrared photodetectors. An overview of the T2SL based design criteria is given and new dual-band detector architecture with a model dual-band detector structure designed to detect light in the mid-wave infrared (MWIR) and long-wave infrared (LWIR) ranges is presented. The absorption coefficient is modeled empirically and the quantum efficiency spectra are calculated using a numerical model and Hovel's analytical expressions. The spectral cross-talk due to the response of the LWIR channel to residual MWIR light is also investigated. It is shown that the significance of this cross-talk primarily depends on the temperature of the target (scene) being detected. For MWIR/MWIR (two bands in the MWIR range) dual-band detectors, the spectral cross-talk becomes significant irrespective of the target temperature. Eliminating the spectral cross-talk in T2SL dual-band detectors presently remains a challenge. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.3702581]
C1 [Ariyawansa, Gamini; Grupen, Matt; Duran, Joshua M.; Scheihing, John E.; Nelson, Thomas R.; Eismann, Michael T.] USAF, Res Lab, Sensors Directorate, Wright Patterson AFB, OH 45433 USA.
RP Ariyawansa, G (reprint author), USAF, Res Lab, Sensors Directorate, 2241 Avion Circle, Wright Patterson AFB, OH 45433 USA.
EM Gamini.Ariyawansa.ctr@wpafb.af.mil
FU Air Force Research Laboratory [F49620-02-C-0015]; AFOSR [LRIR 11RY10COR]
FX This research was performed while the principal author held a National
   Research Council Research Associateship Award at the Air Force Research
   Laboratory (under Contract No. F49620-02-C-0015). It was also supported
   by the AFOSR under Grant No. LRIR 11RY10COR.
NR 55
TC 7
Z9 7
U1 2
U2 18
PU AMER INST PHYSICS
PI MELVILLE
PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA
SN 0021-8979
EI 1089-7550
J9 J APPL PHYS
JI J. Appl. Phys.
PD APR 1
PY 2012
VL 111
IS 7
AR 073107
DI 10.1063/1.3702581
PG 10
WC Physics, Applied
SC Physics
GA 932HX
UT WOS:000303282402047
ER

PT J
AU Crouse, CA
   Michel, E
   Shen, Y
   Knutson, SJ
   Hardenstein, BK
   Spowart, JE
   Leontsev, SO
   Semiatin, SL
   Horwath, J
   Turgut, Z
   Lucas, MS
AF Crouse, C. A.
   Michel, E.
   Shen, Y.
   Knutson, S. J.
   Hardenstein, B. K.
   Spowart, J. E.
   Leontsev, S. O.
   Semiatin, S. L.
   Horwath, J.
   Turgut, Z.
   Lucas, M. S.
TI Effect of surfactant molecular weight on particle morphology of SmCo5
   prepared by high energy ball milling
SO JOURNAL OF APPLIED PHYSICS
LA English
DT Article; Proceedings Paper
CT 56th Annual Conference on Magnetism and Magnetic Materials
CY OCT 30-30, 2011
CL Scottsdale, AZ
ID NANOFLAKES; MAGNETS
AB Surfactant-assisted high energy ball milling (HEBM) is a widely used technique for producing nanostructured magnetic materials with oleic acid (OA) being the most commonly utilized surfactant reported in literature to date. No conclusive explanation has been presented for the wide use of OA and only a few studies have deviated from its use. OA has a boiling point of 360 degrees C which presents issues for complete removal of the surfactant after the HEBM process. Exposing the nanostructured materials to the high temperatures required for surfactant removal is known to result in grain growth and oxidation. In other studies, select surfactant systems, such as octanoic acid or oleylamine, have been used, however, a systematic study examining the dependence of surfactant selection on overall particle (flake) morphology has yet to be performed. In this study, we have qualitatively and quantitatively examined the effects of surfactant selection on the morphology and magnetic properties of SmCo5 utilizing surfactants with lower boiling points that are structurally similar to OA. Our results demonstrate that there was little change in the morphological and magnetic properties for the different surfactants. The implication is that lower boiling point surfactants may be used for HEBM, which require less severe conditions for surfactant removal after milling thereby preserving the integrity of the powders. (C) 2012 American Institute of Physics. [doi:10.1063/1.3677760]
C1 [Crouse, C. A.; Michel, E.; Shen, Y.; Knutson, S. J.; Hardenstein, B. K.; Spowart, J. E.; Leontsev, S. O.; Semiatin, S. L.; Horwath, J.; Turgut, Z.; Lucas, M. S.] USAF, Res Lab, Wright Patterson AFB, OH 45433 USA.
   [Crouse, C. A.; Turgut, Z.] UES Inc, Wright Patterson AFB, OH 45433 USA.
   [Michel, E.] Wright State Univ, Dayton, OH 45435 USA.
   [Shen, Y.; Leontsev, S. O.] Univ Dayton, Res Inst, Dayton, OH 45469 USA.
   [Lucas, M. S.] UTC Inc, Dayton, OH 45432 USA.
RP Lucas, MS (reprint author), USAF, Res Lab, Wright Patterson AFB, OH 45433 USA.
EM matthew.steven.lucas@gmail.com
RI SEMIATIN, SHELDON/E-7264-2017
NR 9
TC 7
Z9 7
U1 1
U2 30
PU AMER INST PHYSICS
PI MELVILLE
PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA
SN 0021-8979
EI 1089-7550
J9 J APPL PHYS
JI J. Appl. Phys.
PD APR 1
PY 2012
VL 111
IS 7
AR 07A724
DI 10.1063/1.3677760
PG 3
WC Physics, Applied
SC Physics
GA 932HX
UT WOS:000303282400085
ER

PT J
AU Hoff, BW
   Chen, CH
   Horwath, JC
   Haworth, MD
   Mardahl, PJ
   Heidger, SL
AF Hoff, B. W.
   Chen, C. H.
   Horwath, J. C.
   Haworth, M. D.
   Mardahl, P. J.
   Heidger, S. L.
TI Wide aperture permanent magnet solenoid
SO JOURNAL OF APPLIED PHYSICS
LA English
DT Article; Proceedings Paper
CT 56th Annual Conference on Magnetism and Magnetic Materials
CY OCT 30-30, 2011
CL Scottsdale, AZ
AB Various configurations of rare earth permanent magnet solenoids with a large bore were simulated using finite element computer modeling. The configuration effect on the axial field, B-z, and its uniformity, Delta B-z, was analyzed. The magnetic orientation of individual segments and the aspect-ratio of the solenoid have a significant effect on B-z and Delta B-z. Two-layered configurations assembled with trapezoidal or arc segments result in a more uniform B-z compared to configurations assembled with five-faced polyhedrons. The two-layered configuration also has the advantage of easier fabrication. A permanent magnet solenoid prototype, based on the two-layered arc segment configuration and built using Nd-Fe-B magnets, was experimentally tested. The solenoid was designed to have a length to inner diameter ratio of approximately 5:3 and a peak axial field magnitude of 1.8 kGauss. Experimental measurements agree with simulation predictions to within < 5%. (C) 2012 American Institute of Physics. [doi:10.1063/1.3673808]
C1 [Hoff, B. W.; Haworth, M. D.; Mardahl, P. J.; Heidger, S. L.] USAF, Res Lab AFRL, Directed Energy Directorate, Kirtland AFB, NM 87117 USA.
   [Horwath, J. C.] USAF, Res Lab AFRL, Prop Directorate, Wright Patterson AFB, OH 45433 USA.
   [Chen, C. H.] Univ Dayton, Magnet Lab, Dayton, OH 45469 USA.
   [Chen, C. H.] GE Global Res, Niskayuna, NY 12309 USA.
RP Hoff, BW (reprint author), USAF, Res Lab AFRL, Directed Energy Directorate, Kirtland AFB, NM 87117 USA.
EM Brad.Hoff@kirtland.af.mil
FU Air Force Research Laboratory
FX This work was funded by the Air Force Research Laboratory.
NR 4
TC 0
Z9 1
U1 0
U2 8
PU AMER INST PHYSICS
PI MELVILLE
PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA
SN 0021-8979
EI 1089-7550
J9 J APPL PHYS
JI J. Appl. Phys.
PD APR 1
PY 2012
VL 111
IS 7
AR 07A711
DI 10.1063/1.3673808
PG 3
WC Physics, Applied
SC Physics
GA 932HX
UT WOS:000303282400072
ER

PT J
AU Shen, Y
   Huang, MQ
   Turgut, Z
   Lucas, MS
   Michel, E
   Horwath, JC
AF Shen, Y.
   Huang, M. Q.
   Turgut, Z.
   Lucas, M. S.
   Michel, E.
   Horwath, J. C.
TI Effect of milling time on magnetic properties and structures of bulk
   Sm-Co/alpha-(Fe, Co) nanocomposite magnets
SO JOURNAL OF APPLIED PHYSICS
LA English
DT Article; Proceedings Paper
CT 56th Annual Conference on Magnetism and Magnetic Materials
CY OCT 30-30, 2011
CL Scottsdale, AZ
AB Bulk Sm-Co/alpha-(Fe, Co) nanocomposite magnets were fabricated by hot pressing composite powders prepared by high-energy ball milling of magnetically hard SmCo5 powder and magnetically soft Fe powder. The bulk magnets had a nanocomposite structure consisting of Sm-Co matrix (1: 5 H and 1: 7 H phases) and alpha-(Fe, Co) phases. The Fe-Co particles were distributed uniformly in the Sm-Co matrix. The milling time strongly affects the structures and the magnetic properties of the bulk magnets. Increasing milling time led to a decrease of the amount of 1: 5 H phase, an increase in the phase fraction of the 1: 7 H phase, and a decrease in the amount of soft phase, which resulted in an increase in magnetization and a decrease in coercivity. Scanning electron microscopy (SEM)/energy dispersive spectroscopy (EDS) analyses revealed that inter-diffusion took place between the Sm-Co matrix and Fe particles during the processing. (C) 2012 American Institute of Physics. [doi:10.1063/1.3673413]
C1 [Shen, Y.] Univ Dayton, UDRI, Dayton, OH 45469 USA.
   [Shen, Y.; Huang, M. Q.; Turgut, Z.; Lucas, M. S.; Michel, E.; Horwath, J. C.] AFRL, Wright Patterson AFB, OH 45433 USA.
   [Huang, M. Q.; Turgut, Z.] UES Inc, Dayton, OH 45432 USA.
   [Lucas, M. S.] UTC, Dayton, OH 45432 USA.
   [Michel, E.] Wright State Univ, Dayton, OH 45435 USA.
RP Shen, Y (reprint author), Univ Dayton, UDRI, Dayton, OH 45469 USA.
EM yuhui.shen@udri.udayton.edu
NR 8
TC 3
Z9 4
U1 0
U2 16
PU AMER INST PHYSICS
PI MELVILLE
PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA
SN 0021-8979
EI 1089-7550
J9 J APPL PHYS
JI J. Appl. Phys.
PD APR 1
PY 2012
VL 111
IS 7
AR 07B512
DI 10.1063/1.3673413
PG 3
WC Physics, Applied
SC Physics
GA 932HX
UT WOS:000303282400209
ER

PT J
AU Moore, EA
   Langley, D
   Jussaume, ME
   Rederus, LA
   Lundell, CA
   Coutu, RA
   Collins, PJ
   Starman, LA
AF Moore, E. A.
   Langley, D.
   Jussaume, M. E.
   Rederus, L. A.
   Lundell, C. A.
   Coutu, R. A., Jr.
   Collins, P. J.
   Starman, L. A.
TI SRRs Embedded with MEMS Cantilevers to Enable Electrostatic Tuning of
   the Resonant Frequency
SO EXPERIMENTAL MECHANICS
LA English
DT Article
DE Split ring resonator; MEMS; Metamaterials; Cantilever; SRR;
   Microelectromechanical systems; Varactors
ID SPLIT-RING RESONATORS; TERAHERTZ METAMATERIALS
AB A microelectromechanical systems (MEMS) cantilever array was monolithically fabricated in the gap region of a split ring resonator (SRR) to enable electrostatic tuning of the resonant frequency. The design consisted of two concentric SRRs each with a set of cantilevers extending across the split region. The cantilever array consisted of five beams that varied in length from 300 to 400 mu m, with each beam adding about 2 pF to the capacitance as it actuated. The entire structure was fabricated monolithically to reduce its size and minimize losses from externally wire bonded components. The beams actuate one at a time, longest to shortest with an applied voltage ranging from 30-60 V. The MEMS embedded SRRs displayed dual resonant frequencies at 7.3 and 14.2 GHz or 8.4 and 13.5 GHz depending on the design details. As the beams on the inner SRR actuated the 14.2 GHz resonance displayed tuning, while the cantilevers on the outer SRR tuned the 8.4 GHz resonance. The 14.2 GHz resonant frequency shifts 1.6 GHz to 12.6 GHz as all the cantilevers pulled-in. Only the first two beams on the outer cantilever array pulled-in, tuning the resonant frequency 0.4 GHz from 8.4 to 8.0 GHz.
C1 [Moore, E. A.; Langley, D.; Jussaume, M. E.; Rederus, L. A.; Lundell, C. A.; Coutu, R. A., Jr.; Collins, P. J.; Starman, L. A.] USAF, Inst Technol, Wright Patterson AFB, OH 45433 USA.
RP Coutu, RA (reprint author), USAF, Inst Technol, 2950 Hobson Way, Wright Patterson AFB, OH 45433 USA.
EM Ronald.Coutu@afit.edu
RI Coutu, Ronald/I-7711-2014
FU Air Force Research Laboratory (AFRL), Material and Manufacturing
   Directorate
FX The financial support and sponsorship of this project were provided by
   Drs. Katie Thorp and Augustine Urbas from the Air Force Research
   Laboratory (AFRL), Material and Manufacturing Directorate. The authors
   are also thankful to the AFRL, Sensors Directorate for assistance and
   advice during device fabrication.
NR 24
TC 4
Z9 4
U1 1
U2 12
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 0014-4851
J9 EXP MECH
JI Exp. Mech.
PD APR
PY 2012
VL 52
IS 4
BP 395
EP 403
DI 10.1007/s11340-011-9498-8
PG 9
WC Materials Science, Multidisciplinary; Mechanics; Materials Science,
   Characterization & Testing
SC Materials Science; Mechanics
GA 940HJ
UT WOS:000303880300006
ER

PT J
AU Walley, JL
   Wheeler, R
   Uchic, MD
   Mills, MJ
AF Walley, J. L.
   Wheeler, R.
   Uchic, M. D.
   Mills, M. J.
TI In-Situ Mechanical Testing for Characterizing Strain Localization During
   Deformation at Elevated Temperatures
SO EXPERIMENTAL MECHANICS
LA English
DT Article
DE Elevated temperature tension experiment; Scanning electron microscopy;
   2D digital image correlation; Speckle pattern development; Nickel-based
   superalloy
ID SCANNING-ELECTRON-MICROSCOPY; QUANTITATIVE SMALL; MAGNIFICATIONS;
   DIFFRACTION; PATTERNS
AB An experimental methodology has been developed to characterize local strain heterogeneities in alloys via in-situ scanning electron microscope (SEM) based mechanical testing. Quantitative measurements of local strains as a function of grain orientation, morphology and neighborhood are crucial for mechanistic understanding and validation of crystal plasticity models. This study focuses on the technical challenges associated with performing creep tests at elevated temperatures <= 700 degrees C in an SEM. Samples of nickel-based superalloy Rene 104 were used for this study, but the technique is applicable to testing of any metal samples at elevated temperature. Electron beam lithography was employed to produce a suitable surface speckle pattern of hafnium oxide to facilitate full field displacement measurements using a commercial software package. The speckle pattern proved to have good thermal stability and provided excellent contrast for image acquisition using secondary electron imaging at elevated temperature. The speckle pattern and microscope magnification were optimized to obtain the resolution necessary to discern strain localizations within grain interiors and along grain boundaries. Minimum strain resolution due to SEM image distortions was determined prior to tensile testing, and image integration methods were utilized to minimize imaging artifacts. Limitations due to the present specimen heating method and potential solutions to these limitations are also addressed.
C1 [Walley, J. L.; Mills, M. J.] Ohio State Univ, Columbus, OH 43210 USA.
   [Wheeler, R.] Universal Energy Syst Inc, Dayton, OH 45432 USA.
   [Uchic, M. D.] USAF, Res Lab, Mat & Mfg Directorate, AFRL RXLM, Dayton, OH 45433 USA.
RP Walley, JL (reprint author), Ohio State Univ, 477 Watts Hall,2041 Coll Rd, Columbus, OH 43210 USA.
EM walley.7@osu.edu; Robert.Wheeler@wpafb.af.mil;
   Michael.Uchic@wpafb.af.mil; mills.108@osu.edu
RI Carter, Jennifer/A-3241-2013; Mills, Michael/I-6413-2013
OI Carter, Jennifer/0000-0001-6702-729X; 
FU Air Force Research Laboratory (AFRL) [FA9550-09-1-0014]; Materials &
   Manufacturing Directorate of the Air Force Research Laboratory
FX This work is funded by the Air Force Research Laboratory (AFRL) STW-21
   program FA9550-09-1-0014. The support received from the Materials &
   Manufacturing Directorate of the Air Force Research Laboratory has been
   instrumental for the development of the in-situ tensile frame. The
   authors would like to thank Aimee Price of the Ohio State University
   Institute for Materials Research and OSU Nanotech West Laboratory for
   her invaluable assistance with development on the lithography techniques
   for the speckle patterning.
NR 22
TC 14
Z9 14
U1 4
U2 37
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 0014-4851
J9 EXP MECH
JI Exp. Mech.
PD APR
PY 2012
VL 52
IS 4
BP 405
EP 416
DI 10.1007/s11340-011-9499-7
PG 12
WC Materials Science, Multidisciplinary; Mechanics; Materials Science,
   Characterization & Testing
SC Materials Science; Mechanics
GA 940HJ
UT WOS:000303880300007
ER

PT J
AU Anderson, DM
   Gupta, MK
   Voevodin, AA
   Hunter, CN
   Putnam, SA
   Tsukruk, VV
   Fedorov, AG
AF Anderson, David M.
   Gupta, Maneesh K.
   Voevodin, Andrey A.
   Hunter, Chad N.
   Putnam, Shawn A.
   Tsukruk, Vladimir V.
   Fedorov, Andrei G.
TI Using Amphiphilic Nanostructures To Enable Long-Range Ensemble
   Coalescence and Surface Rejuvenation in Dropwise Condensation
SO ACS NANO
LA English
DT Article
DE amphiphilic nanostructures; environmental scanning electron microscopy;
   nanoscale water condensation; droplet coalescence dynamics
ID SUPERHYDROPHOBIC SURFACES; ROUGH SURFACES; DYNAMICS; STATES
AB Controlling coalescence events in a heterogeneous ensemble of condensing droplets on a surface is an outstanding fundamental challenge in surface and interfacial sciences, with a broad practical Importance in applications ranging from thermal management of high-performance electronic devices to moisture management in high-humidity environments. Nature-inspired superhydrophobic surfaces have been actively explored to enhance heat and mass transfer rates by achieving favorable dynamics during dropwise condensation; however, the effectiveness of such chemically homogeneous surfaces has been limited because condensing droplets tend to form as pinned Wenzel drops rather than mobile Cassie ones. Here, we Introduce an amphiphilic nanostructured surface, consisting of a hydrophilic base with hydrophobic tips, which promotes the periodic regeneration of nucleation sites for small droplets, thus rendering the surface self-rejuvenating. This unique amphiphilic nanointerface generates an arrangement of condensed Wenzel droplets that are fluidically linked by a wetted sublayer, promoting previously unobserved coalescence events where numerous droplets simultaneously merge, without direct contact. Such ensemble coalestences rapidly create fresh nucleation sites, thereby shifting the overall population toward smaller droplets and enhancing the rates of mass and heat transfer during condensation.
C1 [Anderson, David M.; Fedorov, Andrei G.] Georgia Inst Technol, George W Woodruff Sch Mech Engn, Atlanta, GA 30332 USA.
   [Gupta, Maneesh K.; Tsukruk, Vladimir V.] Georgia Inst Technol, Sch Mat Sci & Engn, Atlanta, GA 30332 USA.
   [Voevodin, Andrey A.; Hunter, Chad N.; Putnam, Shawn A.] USAF, Res Lab, Thermal Sci & Mat Branch, Wright Patterson AFB, OH 45433 USA.
   [Putnam, Shawn A.] Universal Technol Corp, Dayton, OH 45432 USA.
   [Fedorov, Andrei G.] Georgia Inst Technol, Parker H Petit Inst Bioengn & Biosci, Atlanta, GA 30332 USA.
RP Fedorov, AG (reprint author), Georgia Inst Technol, George W Woodruff Sch Mech Engn, Atlanta, GA 30332 USA.
EM AGF@gatech.edu
RI Voevodin, Andrey/I-6684-2013
FU AFOSR BIONIC Center [FA9550-09-1-0162]
FX AFOSR BIONIC Center (Award No. FA9550-09-1-0162) provided financial
   support for this work The authors thank A. Waite at Air Force Research
   Laboratory for assistance with the fluoropolymer PECVD coating process.
   They also acknowledge S. Naik at Georgia Institute of Technology for
   preparing the electrodeposited gold nanowire samples.
NR 34
TC 20
Z9 20
U1 4
U2 48
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1936-0851
EI 1936-086X
J9 ACS NANO
JI ACS Nano
PD APR
PY 2012
VL 6
IS 4
BP 3262
EP 3268
DI 10.1021/nn300183d
PG 7
WC Chemistry, Multidisciplinary; Chemistry, Physical; Nanoscience &
   Nanotechnology; Materials Science, Multidisciplinary
SC Chemistry; Science & Technology - Other Topics; Materials Science
GA 929XP
UT WOS:000303099300047
PM 22456273
ER

PT J
AU Midey, AJ
   Miller, TM
   Viggiano, AA
AF Midey, Anthony J.
   Miller, Thomas M.
   Viggiano, A. A.
TI Survey of ion energetics properties of chemical weapon agent (CWA)
   breakdown products using G3(MP2) theory
SO INTERNATIONAL JOURNAL OF MASS SPECTROMETRY
LA English
DT Article
DE Chemical ionization; CWA; Ion energetics; Ion-molecule reactions;
   Calculations
ID FLIGHT MASS-SPECTROMETRY; MOBILITY SPECTROMETRY; GAS-PHASE;
   DIMETHYL-METHYLPHOSPHONATE; DEGRADATION-PRODUCTS; MOLECULE REACTIONS;
   TRAJECTORY CALCULATIONS; PHOSPHONIUM IONS; PROTON AFFINITY; IONIZATION
AB The ion energetics properties of the major breakdown products of chemical weapons agents (CWAs) have been calculated using G3(MP2) theory to gain insight into which reactant ions in chemical ionization mass spectrometry (CIMS) would be optimal for detecting the CWAs. These results would also offer insight into which ions are formed in ion mobility spectrometry (IMS) detectors for CWA that use atmospheric pressure ionization sources. The ionization energies (IEs), proton affinities (PAs), electron affinities (EAs), and fluoride affinities (FM) have been calculated for the major degradation products of sulfur mustard, the G-series nerve agents, and VX based on optimized structures using G3(MP2) theory. Electron attachment is found to yield an unstable parent anion or leads to an ionic structure with negative EA. The sulfur and nitrogen containing degradation products all have IEs < 9 eV, implying that charge exchange with NO+ should be a favorable detection route. The strictly alkylphosphorus compounds all have IEs around 10 eV, implying that they would likely form a unique association product with NO+. All of the compounds with a P=O moiety most favorably add an H+ on the O atom with PAs of similar to 900 kJ mol(-1). 2-(Diisopropylamino) ethane thiol (DESH) and ethyl-N,N-dimethyl phosphoramidate (EDPA) both have amine nitrogens that can readily accept a proton, with PAs > 900 kJ mol(-1). The least favorable protonation site is the oxygen that connects the phosphorus center to the different alkyl groups. The PAs indicate that non-dissociative proton transfer with protonated acetone or ammonia should provide good selectivity, likely with a large rate constant as seen in previous kinetics studies with CWA simulants. All of the breakdown products except 1,4-dithiane can attach a F- ion in at least one stable location. However, the corresponding FAs are too low to favor this process with the normal CIMS fluoride transfer anions. (C) 2012 Elsevier B.V. All rights reserved.
C1 [Midey, Anthony J.; Miller, Thomas M.; Viggiano, A. A.] USAF, Res Lab, Space Vehicles Directorate, Kirtland AFB, NM 87117 USA.
   [Midey, Anthony J.] Boston Coll, Inst Sci Res, Chestnut Hill, MA 02167 USA.
RP Midey, AJ (reprint author), Excellims Corp, Acton, MA USA.
EM anthony.midey@excellims.com
FU Army Research Office (ARO) under JSTO; Boston College [FA8718-04-C-0006]
FX This project was supported by the Army Research Office (ARO) under the
   JSTO program in Chemical and Biological Defense (JSTO-CBD). AJM and TMM
   were supported under Boston College contract number FA8718-04-C-0006.
   The calculations were performed on the Scorpio Linux cluster at Boston
   College.
NR 44
TC 2
Z9 2
U1 4
U2 20
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 1387-3806
J9 INT J MASS SPECTROM
JI Int. J. Mass Spectrom.
PD APR 1
PY 2012
VL 315
BP 1
EP 7
DI 10.1016/j.ijms.2012.01.018
PG 7
WC Physics, Atomic, Molecular & Chemical; Spectroscopy
SC Physics; Spectroscopy
GA 934GH
UT WOS:000303431300001
ER

PT J
AU Gardenier, HE
   Palazotto, AN
   Larson, RA
AF Gardenier, Hugh E.
   Palazotto, Anthony N.
   Larson, Reid A.
TI Development and Investigation of a Slotted Beam Impact Experiment for
   Intermediate Strain Rates
SO JOURNAL OF AEROSPACE ENGINEERING
LA English
DT Article
DE Titanium; 1018 steel; 2024-T3 aluminum; Plastic flow; Intermediate
   strain rate; Johnson-cook; Impact testing; Strain rate dependence
ID DYNAMIC TENSILE BEHAVIOR; DEFORMATION MECHANISMS; ALUMINUM-ALLOYS; PURE
   TITANIUM; METALS; RESISTANCE; MACHINE; STEELS; RANGE
AB Quantifying the strain rate-sensitive mechanical properties of structural materials is an important area of research in the field of solid mechanics. Property evaluation is typically accomplished using dynamic tests that involve rapid loading or impact of specimens. These tests generate inertial forces and wave propagation, which make it difficult to accurately record the material response to a loading condition at an equivalent location. Furthermore, dynamic impact tests typically generate high strain rates (in excess of 10(3) s(-1)) and an experimental method for generating rates of strain in the intermediate strain rate regime that is simple and reliable is still lacking. This research develops and investigates an experimental technique for generating tensile plastic strain rates up to 10(2) s(-1) in ductile metals. The technique relies on the impact from a vertical drop weight machine capable of delivering suitable impact velocity and energy to globally deform a slotted beam specimen. At impact, a state of predominantly plastic uniaxial tensile stress is created in the ligament beneath the slot. The ligament is instrumented with an electrical resistance strain gauge, and the strain history is measured and stored in a digital oscilloscope. Experiments are conducted on commercially pure (CP) titanium, 2024-T3 aluminum, and 1018 steel samples at four distinct impact velocities, and collected data illustrate the capability to create predominantly uniaxial tensile strain rates up to 10(2) s(-1). An analysis of the material response identifies where plastic flow initiates. Furthermore, a numerical analysis of the impact event is conducted where the Johnson-Cook constitutive equation is assumed to reflect the material behavior and published parameters are utilized to illustrate good agreement between experimental strain data and the numerical model. DOI: 10.1061/(ASCE)AS.1943-5525.0000112. (C) 2012 American Society of Civil Engineers.
C1 [Gardenier, Hugh E.; Palazotto, Anthony N.; Larson, Reid A.] USAF, Inst Technol, Wright Patterson AFB, OH 45431 USA.
RP Gardenier, HE (reprint author), USAF, Inst Technol, 2950 Hobson Way, Wright Patterson AFB, OH 45431 USA.
EM hugh.gardenier@kirtland.af.mil
FU U.S. Air Force Research Laboratory, Structural Science Center
FX The views expressed in this article are those of the authors and do not
   reflect the official policy or position of the U.S. Air Force,
   Department of Defense, or the U.S. government. This work was funded by
   the U.S. Air Force Research Laboratory, Structural Science Center. The
   authors would like to acknowledge Brian Smyers and Brett Hauber of
   AFRL/RBS and Kevin Poormon of University of Dayton Research Institute
   for their help in this effort.
NR 40
TC 0
Z9 0
U1 1
U2 8
PU ASCE-AMER SOC CIVIL ENGINEERS
PI RESTON
PA 1801 ALEXANDER BELL DR, RESTON, VA 20191-4400 USA
SN 0893-1321
J9 J AEROSPACE ENG
JI J. Aerosp. Eng.
PD APR
PY 2012
VL 25
IS 2
BP 294
EP 307
DI 10.1061/(ASCE)AS.1943-5525.0000112
PG 14
WC Engineering, Aerospace; Engineering, Civil
SC Engineering
GA 932AI
UT WOS:000303260900014
ER

PT J
AU Hanchak, MS
   Byrd, LW
   Briones, AM
   Ervin, JS
   Putnam, SA
AF Hanchak, M. S.
   Byrd, L. W.
   Briones, A. M.
   Ervin, J. S.
   Putnam, S. A.
TI Model of Droplet Impingement Based on Least-Squares Solution of Proper
   Orthogonal Decomposition Basis Matrices
SO JOURNAL OF FLUIDS ENGINEERING-TRANSACTIONS OF THE ASME
LA English
DT Article
DE droplet impingement; proper orthogonal decomposition; singular value
   decomposition; general linear model; least-squares; reduced-order
   modeling
ID DYNAMICS; FLOWS
AB A reduced order model of the surface profiles of droplets impinging on a flat surface is presented based on axisymmetric, transient computational fluid dynamics (CFD). The free surfaces resulting from the volume-of-fluid simulations were interpolated in polar coordinates and arranged as rectangular matrices (time versus space). Proper orthogonal decomposition was then used to expand the data into sets of temporal and spatial basis vectors, which were truncated beyond diminishing singular values. The reduced model is a general linear combination of constant matrices and dimensionless parameters that, when combined, recreate the temporal and spatial basis vectors for each case. The constant matrices were determined with a least-squares solution to the overdetermined linear combinations. To predict a new case, the initial Reynolds, Weber, and Ohnesorge numbers were combined with the calculated constant matrices to determine the new basis vectors, which were used to create the new free surface profile. A new case predicted by the model was validated using a CFD simulation. The single maximum error between the CFD profile and the general linear model was approximately 9% of the initial droplet diameter. The root-mean-squared error for the entire droplet motion was approximately 2% of the initial droplet diameter. [DOI: 10.1115/1.4006226]
C1 [Hanchak, M. S.; Briones, A. M.; Ervin, J. S.] Univ Dayton, Res Inst, Dayton, OH 45469 USA.
   [Byrd, L. W.] USAF, Res Lab, Wright Patterson AFB, OH 45433 USA.
   [Putnam, S. A.] Universal Technol Corp, Dayton, OH 45432 USA.
RP Hanchak, MS (reprint author), Univ Dayton, Res Inst, Dayton, OH 45469 USA.
EM Michael.Hanchak@udri.udayton.edu; Larry.Byrd@wpafb.af.mil;
   brioneam@notes.udayton.edu; Jamie.Ervin@udri.udayton.edu;
   Shawn.Putnam@wpafb.af.mil
FU U.S. Air Force Office of Scientific Research [2303BR5P]
FX This work is based on research sponsored by the U.S. Air Force Office of
   Scientific Research under Grant No. 2303BR5P. The views and conclusions
   contained herein are those of the authors and should not be interpreted
   as necessarily representing the official policies or endorsements,
   either expressed or implied, of the U.S. Air Force Office of Scientific
   Research or the U.S. Government. The U.S. Government retains the right
   to publish or reproduce this work for U.S. Government purposes.
NR 17
TC 0
Z9 0
U1 1
U2 3
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 APR
PY 2012
VL 134
IS 4
AR 041301
DI 10.1115/1.4006226
PG 8
WC Engineering, Mechanical
SC Engineering
GA 931ZI
UT WOS:000303257600009
ER

PT J
AU Minteer, SD
   Atanassov, P
   Luckarift, HR
   Johnson, GR
AF Minteer, Shelley D.
   Atanassov, Plamen
   Luckarift, Heather R.
   Johnson, Glenn R.
TI New materials for biological fuel cells
SO MATERIALS TODAY
LA English
DT Review
ID DIRECT ELECTRON-TRANSFER; AIR DIFFUSION BIOCATHODE; ENZYMATIC BIOFUEL
   CELLS; GLUCOSE-OXIDASE; CARBON NANOTUBES; ELECTROCHEMICAL BIOSENSORS;
   BILIRUBIN OXIDASE; REDOX ENZYMES; LACCASE; GOLD
AB Over the last decade, there has been renewed interest in biological fuel cells(1-6); a subset of fuel cells, where the cathode and/or anode catalysts are biocatalysts. This biocatalyst could be a living cell (microbial fuel cells) or a subcellular biological component (enzymatic or mitochondrial biological fuel cells). The first biological fuel cells were microbial and employed microbes at the anode to catalyze the oxidation of fuel(7). Over the last century, the technology (frequently referred to as bio-electrochemical systems in the research community) has expanded to include microbial cathodes, with applications including wastewater treatment, underwater power, and the production of electrofuels(8-12). Enzymatic biological fuel cells were first introduced in the 1960s, where oxidoreductase enzymes were used with mediators to catalyze the oxidation of amino acids, alcohol, and glucose at the anode of a fuel cell(13). Continued development led to the use of enzymes at the cathode; where oxygen or peroxide is reduced to water in solution by an enzyme catalyst(14,15), or where oxygen is reduced directly in an air-breathing biocathode(16). The choice of subcellular biocatalyst has since expanded to include organelles; with mitochondria, for example, used at the anode of pyruvate/air biological fuel cells(17).
C1 [Minteer, Shelley D.] Univ Utah, Dept Chem & Mat Sci & Engn, Salt Lake City, UT 84112 USA.
   [Atanassov, Plamen] Univ New Mexico, Ctr Emerging Energy Technol, Albuquerque, NM 87131 USA.
   [Luckarift, Heather R.] Universal Technol Corp, Dayton, OH 45432 USA.
   [Luckarift, Heather R.; Johnson, Glenn R.] USAF, Res Lab, Tyndall AFB, FL 32403 USA.
RP Minteer, SD (reprint author), Univ Utah, Dept Chem & Mat Sci & Engn, 315S 1400 E Rm 2020, Salt Lake City, UT 84112 USA.
EM minteer@chem.utah.edu
RI Milton, Ross/J-7164-2012; Atanassov, Plamen/G-4616-2011; Minteer,
   Shelley/C-4751-2014
OI Minteer, Shelley/0000-0002-5788-2249
FU Air Force Office of Scientific Research; Air Force Research Laboratory
FX The authors would like to thank the Air Force Office of Scientific
   Research and the Air Force Research Laboratory for funding.
NR 83
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Z9 73
U1 17
U2 208
PU ELSEVIER SCI LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
SN 1369-7021
EI 1873-4103
J9 MATER TODAY
JI Mater. Today
PD APR
PY 2012
VL 15
IS 4
BP 166
EP 173
PG 8
WC Materials Science, Multidisciplinary
SC Materials Science
GA 937FE
UT WOS:000303643600014
ER

PT J
AU Courtney, AC
   Andrusiv, LP
   Courtney, MW
AF Courtney, Amy C.
   Andrusiv, Lubov P.
   Courtney, Michael W.
TI Oxy-acetylene driven laboratory scale shock tubes for studying blast
   wave effects
SO REVIEW OF SCIENTIFIC INSTRUMENTS
LA English
DT Article
ID TRAUMATIC BRAIN-INJURY; MODEL
AB This paper describes the development and characterization of modular, oxy-acetylene driven laboratory scale shock tubes. Such tools are needed to produce realistic blast waves in a laboratory setting. The pressure-time profiles measured at 1 MHz using high-speed piezoelectric pressure sensors have relevant durations and show a true shock front and exponential decay characteristic of free-field blast waves. Descriptions are included for shock tube diameters of 27-79 mm. A range of peak pressures from 204 kPa to 1187 kPa (with 0.5-5.6% standard error of the mean) were produced by selection of the driver section diameter and distance from the shock tube opening. The peak pressures varied predictably with distance from the shock tube opening while maintaining both a true blast wave profile and relevant pulse duration for distances up to about one diameter from the shock tube opening. This shock tube design provides a more realistic blast profile than current compression-driven shock tubes, and it does not have a large jet effect. In addition, operation does not require specialized personnel or facilities like most blast-driven shock tubes, which reduces operating costs and effort and permits greater throughput and accessibility. It is expected to be useful in assessing the response of various sensors to shock wave loading; assessing the reflection, transmission, and absorption properties of candidate armor materials; assessing material properties at high rates of loading; assessing the response of biological materials to shock wave exposure; and providing a means to validate numerical models of the interaction of shock waves with structures. All of these activities have been difficult to pursue in a laboratory setting due in part to lack of appropriate means to produce a realistic blast loading profile. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.3702803]
C1 [Courtney, Amy C.] Force Protect Ind Inc, R&D, Ladson, SC 29456 USA.
   [Andrusiv, Lubov P.; Courtney, Michael W.] USAF Acad, Colorado Springs, CO 80840 USA.
RP Courtney, AC (reprint author), Force Protect Ind Inc, R&D, 9801 Highway 78, Ladson, SC 29456 USA.
EM amy_courtney@post.harvard.edu
FU BTG Research
FX This work was supported in part by BTG Research, www.btgresearch.org.
NR 17
TC 8
Z9 8
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 0034-6748
J9 REV SCI INSTRUM
JI Rev. Sci. Instrum.
PD APR
PY 2012
VL 83
IS 4
AR 045111
DI 10.1063/1.3702803
PG 7
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA 934BO
UT WOS:000303415300073
PM 22559580
ER

PT J
AU Michael, G
AF Michael, George
TI The Chief Culprit: Stalin's Grand Design to Start World War II
SO WAR IN HISTORY
LA English
DT Book Review
C1 [Michael, George] USAF, Counterproliferat Ctr, Maxwell AFB, AL USA.
RP Michael, G (reprint author), USAF, Counterproliferat Ctr, Maxwell AFB, AL USA.
NR 1
TC 0
Z9 0
U1 0
U2 0
PU SAGE PUBLICATIONS LTD
PI LONDON
PA 1 OLIVERS YARD, 55 CITY ROAD, LONDON EC1Y 1SP, ENGLAND
SN 0968-3445
J9 WAR HIST
JI War Hist.
PD APR
PY 2012
VL 19
IS 2
BP 254
EP 257
PG 5
WC History; International Relations
SC History; International Relations
GA 930UV
UT WOS:000303168400014
ER

PT J
AU Luckarift, HR
   Sizemore, SR
   Farrington, KE
   Roy, J
   Lau, C
   Atanassov, PB
   Johnson, GR
AF Luckarift, Heather R.
   Sizemore, Susan R.
   Farrington, Karen E.
   Roy, Jared
   Lau, Carolin
   Atanassov, Plamen B.
   Johnson, Glenn R.
TI Facile Fabrication of Scalable, Hierarchically Structured Polymer/Carbon
   Architectures for Bioelectrodes
SO ACS APPLIED MATERIALS & INTERFACES
LA English
DT Article
DE hierarchically structured electrodes; porous polymer/carbon composites;
   microbial fuel cells; biological fuel cells; Shewanella oneidensis
   DSP-10; bioelectrochemistry
ID TISSUE ENGINEERING APPLICATIONS; MICROBIAL FUEL-CELLS;
   SHEWANELLA-ONEIDENSIS; BIOACTIVE GLASS; COMPOSITES; ANODES; METABOLISM;
   SCAFFOLDS
AB This research introduces a method for fabrication of conductive electrode materials with hierarchical structure from porous polymer/carbon composite materials. We describe the fabrication of (3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) scaffolds doped with carbon materials that provide a conductive three-dimensional architecture that was demonstrated for application in microbial fuel cell (MFC) anodes. Composite electrodes from PHBV were fabricated to defined dimensions by solvent casting and particulate leaching of a size-specific porogen (in this case, sucrose). The cellular biocompatibility of the resulting composite material facilitated effective immobilization of a defined preparation of Shewanella oneidensis DSP-10 as a model microbial catalyst. Bacterial cells were immobilized via chemical vapor deposition (CVD) of silica to create an engineered biofilm that exhibits efficient bioelectrocatalysis of a simple-carbon fuel in a MFC. The functionalized PHBV electrodes demonstrate stable and reproducible anodic open circuit potentials of -320 +/- 20 mV (vs Ag/AgCl) with lactate as the electron donor. Maximum power densities achieved by the hierarchically structured electrodes (similar to 5 mW cm(3)) were significantly higher than previously observed for graphite-felt electrodes. The methodology for fabrication of scalable electrode materials may be amenable to other bioelectrochemical applications, such as enzyme fuel cells and biosensors, and could easily be adapted to, various design concepts.
C1 [Luckarift, Heather R.; Sizemore, Susan R.; Farrington, Karen E.; Johnson, Glenn R.] USAF, Res Lab, Microbiol & Appl Biochem Lab, Mat & Mfg Directorate AFRL RXQL, Tyndall AFB, FL 32403 USA.
   [Luckarift, Heather R.; Sizemore, Susan R.; Farrington, Karen E.] Universal Technol Corp, Dayton, OH 45434 USA.
   [Roy, Jared; Lau, Carolin; Atanassov, Plamen B.] Univ New Mexico, Dept Chem & Nucl Engn, Albuquerque, NM 87131 USA.
   [Roy, Jared; Lau, Carolin; Atanassov, Plamen B.] Univ New Mexico, Ctr Emerging Energy Technol, Albuquerque, NM 87131 USA.
RP Luckarift, HR (reprint author), USAF, Res Lab, AFRL RXQL, 139 Barnes Dr,Suite 2, Tyndall AFB, FL 32403 USA.
EM heather.luckarift.ctr@tyndall.af.mil; glenn.johnson@tyndall.af.mil
RI Atanassov, Plamen/G-4616-2011
FU DOD/AFOSR MURI [FA9550-06-1-0264]; Air Force Office of Scientific
   Research; Air Force Research Laboratory, Materials and Manufacturing
   Directorate
FX This research was supported at UNM by DOD/AFOSR MURI award
   (FA9550-06-1-0264) 'Fundamentals and Bioengineering of Enzymatic Fuel
   Cells'. Research at Tyndall AFB was supporting by funding from the Air
   Force Office of Scientific Research and the Air Force Research
   Laboratory, Materials and Manufacturing Directorate.
NR 25
TC 26
Z9 26
U1 4
U2 71
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 2012
VL 4
IS 4
BP 2082
EP 2087
DI 10.1021/am300048v
PG 6
WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary
SC Science & Technology - Other Topics; Materials Science
GA 930LC
UT WOS:000303139900029
PM 22394146
ER

PT J
AU Crowley, MT
   Kovanis, V
   Lester, LF
AF Crowley, Mark T.
   Kovanis, Vassilios
   Lester, Luke F.
TI Breakthroughs in Semiconductor Lasers
SO IEEE PHOTONICS JOURNAL
LA English
DT Article
DE Mid-infrared (IR) lasers; nanolasers; vertical cavity surface emitting
   lasers (VCSELs); semiconductor lasers; vertical external cavity surface
   emitting lasers (VECSELs); quantum dots (QDs); III-nitrides
ID NANOLASERS; VCSEL
AB The latest breakthroughs on the frontiers of semiconductor laser capabilities are presented. Achievements including the impressive advances in high-speed lasers with low pJ/bit energy consumption, high-power vertical external cavity surface emitting lasers (VECSELs), advances in III-nitrides, record-high temperature operation quantum dot lasers, the longest wavelength Type-I quantum well lasers to date, and the fascinating field of nanolasers with ultralow volume and threshold are all discussed.
C1 [Crowley, Mark T.; Lester, Luke F.] Univ New Mexico, Ctr High Technol Mat, Albuquerque, NM 87106 USA.
   [Kovanis, Vassilios] USAF, Res Lab, Sensors Directorate, Wright Patterson AFB, OH 45433 USA.
RP Crowley, MT (reprint author), Univ New Mexico, Ctr High Technol Mat, Albuquerque, NM 87106 USA.
EM mcrow80@unm.edu
OI Kovanis, Vassilios/0000-0003-0697-8379
NR 27
TC 6
Z9 7
U1 2
U2 31
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 1943-0655
J9 IEEE PHOTONICS J
JI IEEE Photonics J.
PD APR
PY 2012
VL 4
IS 2
BP 565
EP 569
DI 10.1109/JPHOT.2012.2190499
PG 5
WC Engineering, Electrical & Electronic; Optics; Physics, Applied
SC Engineering; Optics; Physics
GA 932WS
UT WOS:000303321800002
ER

PT J
AU Nasir, JM
   Hawkins, K
   Patino, G
   Furgerson, J
   Soh, EK
AF Nasir, Javed M.
   Hawkins, Karin
   Patino, Gilberto
   Furgerson, James
   Soh, Eugene K.
TI Anterior ST-Segment Elevation Myocardial Infarction in a Patient With an
   L-I Type Single Coronary Artery
SO JACC-CARDIOVASCULAR INTERVENTIONS
LA English
DT Editorial Material
C1 [Nasir, Javed M.; Hawkins, Karin; Patino, Gilberto; Furgerson, James; Soh, Eugene K.] San Antonio Mil Med Ctr, Dept Cardiol, San Antonio, TX USA.
RP Nasir, JM (reprint author), Wilford Hall USAF Med Ctr, 2200 Bergquist Dr,Suite 1, Lackland AFB, TX 78236 USA.
EM javed.nasir@us.af.mil
NR 1
TC 2
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 1936-8798
J9 JACC-CARDIOVASC INTE
JI JACC-Cardiovasc. Interv.
PD APR
PY 2012
VL 5
IS 4
BP E9
EP E10
DI 10.1016/j.jcin.2011.09.030
PG 2
WC Cardiac & Cardiovascular Systems
SC Cardiovascular System & Cardiology
GA 931EZ
UT WOS:000303199700001
PM 22516413
ER

PT J
AU Ford, DE
AF Ford, Douglas E.
TI Preprosthetic Orthodontic Intervention for Management of a Partially
   Edentulous Patient with Generalized Wear and Malocclusion
SO JOURNAL OF ESTHETIC AND RESTORATIVE DENTISTRY
LA English
DT Editorial Material
C1 [Ford, Douglas E.] USAF, Washington, DC 20330 USA.
RP Ford, DE (reprint author), USAF, Washington, DC 20330 USA.
NR 1
TC 0
Z9 0
U1 0
U2 1
PU WILEY-BLACKWELL
PI MALDEN
PA COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA
SN 1496-4155
J9 J ESTHET RESTOR DENT
JI J. Esthet. Restor. Dent.
PD APR
PY 2012
VL 24
IS 2
BP 101
EP 102
DI 10.1111/j.1708-8240.2011.00492.x
PG 2
WC Dentistry, Oral Surgery & Medicine
SC Dentistry, Oral Surgery & Medicine
GA 930RK
UT WOS:000303156600004
PM 22524715
ER

PT J
AU Alam, MT
   Manoharan, MP
   Haque, MA
   Muratore, C
   Voevodin, A
AF Alam, M. T.
   Manoharan, M. P.
   Haque, M. A.
   Muratore, C.
   Voevodin, A.
TI Influence of strain on thermal conductivity of silicon nitride thin
   films
SO JOURNAL OF MICROMECHANICS AND MICROENGINEERING
LA English
DT Article
ID HEAT-TRANSPORT; ALUMINUM FILMS; AMORPHOUS SI; STRESS; MEMS; MANAGEMENT;
   VIBRATIONS; MEMBRANES; SYSTEMS; DESIGN
AB We present a micro-electro-mechanical system-based experimental technique to measure thermal conductivity of freestanding ultra-thin films of amorphous silicon nitride (Si3N4) as a function of mechanical strain. Using a combination of infrared thermal micrography and multi-physics simulation, we measured thermal conductivity of 50 nm thick silicon nitride films to observe it decrease from 2.7 W (m K)(-1) at zero strain to 0.34 W (m K)(-1) at about 2.4% tensile strain. We propose that such strong strain-thermal conductivity coupling is due to strain effects on fraction-phonon interaction that decreases the dominant hopping mode conduction in the amorphous silicon nitride specimens.
C1 [Alam, M. T.; Manoharan, M. P.; Haque, M. A.] Penn State Univ, Dept Mech & Nucl Engn, University Pk, PA 16802 USA.
   [Muratore, C.; Voevodin, A.] USAF, Res Lab, Thermal Sci & Mat Branch, Wright Patterson AFB, OH 45433 USA.
RP Haque, MA (reprint author), Penn State Univ, Dept Mech & Nucl Engn, University Pk, PA 16802 USA.
EM mah37@psu.edu
RI Voevodin, Andrey/I-6684-2013
FU Center for Nanoscale Mechatronics and Manufacturing of the Korea
   Institute of Machinery and Materials; National Science Foundation, USA
   [ECCS 1028521]; United Technology Corporation [10-S587-031-01-C6]
FX MAH gratefully acknowledges the support from the Center for Nanoscale
   Mechatronics and Manufacturing of the Korea Institute of Machinery and
   Materials, the National Science Foundation, USA (ECCS 1028521) and the
   United Technology Corporation (sub-contract: 10-S587-031-01-C6). The
   authors acknowledge in-depth discussion with Sergei Shenogin of the Air
   Force Research Laboratory.
NR 53
TC 20
Z9 21
U1 0
U2 35
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0960-1317
EI 1361-6439
J9 J MICROMECH MICROENG
JI J. Micromech. Microeng.
PD APR
PY 2012
VL 22
IS 4
AR 045001
DI 10.1088/0960-1317/22/4/045001
PG 8
WC Engineering, Electrical & Electronic; Nanoscience & Nanotechnology;
   Instruments & Instrumentation; Physics, Applied
SC Engineering; Science & Technology - Other Topics; Instruments &
   Instrumentation; Physics
GA 931EB
UT WOS:000303196900001
ER

PT J
AU Sitzabee, WE
   Taylor, RE
AF Sitzabee, William E.
   Taylor, Rebecca E.
TI Professional Licensure: Is It an Air Force Ethical Requirement?
SO JOURNAL OF PROFESSIONAL ISSUES IN ENGINEERING EDUCATION AND PRACTICE
LA English
DT Article
C1 [Sitzabee, William E.; Taylor, Rebecca E.] USAF, Inst Technol, Wright Patterson AFB, OH 45433 USA.
RP Sitzabee, WE (reprint author), USAF, Inst Technol, 2950 Hobson Way,Bldg 641, Wright Patterson AFB, OH 45433 USA.
EM William.sitzabee@afit.edu; Rebecca.taylor@afit.edu
NR 22
TC 0
Z9 0
U1 0
U2 0
PU ASCE-AMER SOC CIVIL ENGINEERS
PI RESTON
PA 1801 ALEXANDER BELL DR, RESTON, VA 20191-4400 USA
SN 1052-3928
J9 J PROF ISS ENG ED PR
JI J. Prof. Issues Eng. Educ. Pract.
PD APR
PY 2012
VL 138
IS 2
BP 99
EP 103
DI 10.1061/(ASCE)EI.1943-5541.0000083
PG 5
WC Education, Scientific Disciplines; Engineering, Multidisciplinary
SC Education & Educational Research; Engineering
GA 930HN
UT WOS:000303128400001
ER

PT J
AU Burt, JM
   Josyula, E
   Boyd, ID
AF Burt, Jonathan M.
   Josyula, Eswar
   Boyd, Iain D.
TI Novel Cartesian Implementation of the Direct Simulation Monte Carlo
   Method
SO JOURNAL OF THERMOPHYSICS AND HEAT TRANSFER
LA English
DT Article; Proceedings Paper
CT 49th AIAA Aerospace Sciences Meeting/New Horizons Forum and Aerospace
   Exposition
CY JAN 03-07, 2011
CL Orlando, FL
SP AIAA
ID MESH REFINEMENT; FLOWS; GAS
AB A new implementation of the direct simulation Monte Carlo (DSMC) method, named the hypersonic aerothermodynamics particle (HAP) code, is presented. This code is intended for rapid setup and simulation of rarefied gas flow problems and as a framework for evaluating new physical models and numerical techniques. Unique features include the use of nonuniform Cartesian adaptive subcells, a collision probability modification to reduce errors associated with spatial averaging in collision probabilities, and automatic planar element approximation of analytically defined two- or three-dimensional surface geometries. In this work, simulations are performed using both HAP and an established DSMC code for a rarefied hypersonic flow of nitrogen over a flat plate, and excellent overall agreement is found. Comparisons are also performed with available experimental data and published DSMC results for the same flat plate flow problem. Additional simulations are employed to demonstrate reduced dependence on cell size through a proposed collision probability modification. Finally, HAP results are compared with published DSMC data for a hypersonic flow over a cylinder, and a three-dimensional sphere flow problem is used to demonstrate capabilities for automatic generation of planar cut faces over an analytically defined surface.
C1 [Boyd, Iain D.] Univ Michigan, Dept Aerosp Engn, Ann Arbor, MI 48109 USA.
   [Burt, Jonathan M.; Josyula, Eswar] USAF, Res Lab, Wright Patterson AFB, OH 45433 USA.
EM jonathan.m.burt@nasa.gov
NR 26
TC 11
Z9 12
U1 0
U2 5
PU AMER INST AERONAUT ASTRONAUT
PI RESTON
PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091-4344 USA
SN 0887-8722
J9 J THERMOPHYS HEAT TR
JI J. Thermophys. Heat Transf.
PD APR-JUN
PY 2012
VL 26
IS 2
BP 258
EP 270
DI 10.2514/1.T3733
PG 13
WC Thermodynamics; Engineering, Mechanical
SC Thermodynamics; Engineering
GA 929RJ
UT WOS:000303082900006
ER

PT J
AU Schmidt, JE
   Dudis, DS
   Miller, DJ
AF Schmidt, Joel E.
   Dudis, Douglas S.
   Miller, Douglas J.
TI Expendable High Energy Density Thermal Management Material: Ammonium
   Carbamate
SO JOURNAL OF THERMOPHYSICS AND HEAT TRANSFER
LA English
DT Article; Proceedings Paper
CT 42nd AIAA Thermophysics Conference
CY JUN 27-30, 2011
CL Honolulu, HI
SP AIAA
ID HEAT TRANSFORMER; GRAPHITE FOAMS; STORAGE; EQUILIBRIUM; DECOMPOSITION;
   HYDRIDES; KINETICS; MODEL
AB Phase change materials have low specific energy storage capacities within the temperature range of 20-100 degrees C. State-of-the-art phase change materials in this temperature range are usually paraffin waxes with energy densities on the order of a few 100 kilojoules per kilogram or ice slurries with energy densities of the same magnitude. However, for applications where system weight and size are limited, it is necessary to improve this energy density by at least an order of magnitude. The compound ammonium carbamate [NH4+][H2NCOO-], a solid formed from the reaction of ammonia and carbon dioxide, endothermically decomposes back to CO2 and NH3 in the temperature range 20-100 degrees C with an enthalpy of decomposition of 2010 kJ/kg. Various methods of using ammonium carbamate for thermal management of low-grade high-flux heat have been evaluated, and results are reported, including bare powder, thermally conductive carbon foams, thermally conductive metal foams, hydrocarbon-based slurries, and a slurry solution in ethylene glycol or propylene glycol. A slurry solution in glycol is a promising medium for enhancing heat and mass transfer for thermal management. Small-scale system-level characterizations of ammonium carbamate in glycol have been performed, and results indicate that ammonium carbamate is indeed a promising material for thermal management of low-grade heat.
C1 [Schmidt, Joel E.; Dudis, Douglas S.] USAF, Res Lab, Mat & Mfg Directorate, Thermal Sci & Mat Branch, Wright Patterson AFB, OH 45433 USA.
   [Miller, Douglas J.] Cedarville Univ, Dept Sci & Math, Cedarville, OH 45314 USA.
RP Dudis, DS (reprint author), USAF, Res Lab, Mat & Mfg Directorate, Thermal Sci & Mat Branch, 2977 Hobson Way, Wright Patterson AFB, OH 45433 USA.
OI Schmidt, Joel/0000-0002-0039-2863
NR 32
TC 4
Z9 4
U1 0
U2 23
PU AMER INST AERONAUT ASTRONAUT
PI RESTON
PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091-4344 USA
SN 0887-8722
J9 J THERMOPHYS HEAT TR
JI J. Thermophys. Heat Transf.
PD APR-JUN
PY 2012
VL 26
IS 2
BP 345
EP 351
DI 10.2514/1.T3776
PG 7
WC Thermodynamics; Engineering, Mechanical
SC Thermodynamics; Engineering
GA 929RJ
UT WOS:000303082900016
ER

PT J
AU Roy, S
   Suwas, S
   Tamirisakandala, S
   Srinivasan, R
   Miracle, DB
AF Roy, Shibayan
   Suwas, Satyam
   Tamirisakandala, S.
   Srinivasan, R.
   Miracle, D. B.
TI Microstructure and texture evolution during beta extrusion of boron
   modified Ti-6A1-4V alloy
SO MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES
   MICROSTRUCTURE AND PROCESSING
LA English
DT Article
DE Titanium alloy; EBSD; Mechanical characterization; Orientation
   relationship; Phase transformation
ID ROLLED TITANIUM SHEET; SHEAR BAND FORMATION; ELI GRADE TI-6AL-4V;
   MECHANICAL-PROPERTIES; VARIANT SELECTION; ROLLING TEXTURES; HOT
   DEFORMATION; HEAT-TREATMENT; GRAIN-GROWTH; PHASE
AB Boron addition to conventional titanium alloys below the eutectic limit refines the cast microstructure and improves mechanical properties. The present work explores the influence of hypoeutectic boron addition on the microstructure and texture evolution in Ti-6Al-4V alloy under beta extrusion. The beta extruded microstructure of Ti-6Al-4V is characterized by shear bands parallel to the extrusion direction. In contrast, the extruded Ti-6Al-4V-0.1B alloy shows a regular beta worked microstructure consisting of fine prior beta grains and acicular alpha-lamellae with no signs of the microstructural instability. Crystallographic texture after extrusion was almost identical for the two alloys indicating the similarity in their transformation behavior, which is attributed to complete dynamic recrystallization during beta processing. Microstructural features as well as crystallographic texture indicate dominant grain boundary related deformation processes for the boron modified alloy that leads to homogeneous deformation without instability formation. The absence of shear bands has significant technological importance as far as the secondary processing of boron added alloys in (alpha + beta)-phase field are concerned. (C) 2012 Elsevier B.V. All rights reserved.
C1 [Roy, Shibayan; Suwas, Satyam] Indian Inst Sci, Dept Mat Engn, Bangalore 560012, Karnataka, India.
   [Tamirisakandala, S.] FMW Composite Syst Inc, Bridgeport, WV USA.
   [Srinivasan, R.] Wright State Univ, Dept Mech & Mat Engn, Dayton, OH 45435 USA.
   [Miracle, D. B.] USAF, Res Lab, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA.
RP Suwas, S (reprint author), Indian Inst Sci, Dept Mat Engn, Bangalore 560012, Karnataka, India.
EM satyamsuwas@materials.iisc.ernet.in
RI ROY, SHIBAYAN/E-4225-2012; 
OI Roy, Shibayan/0000-0002-4496-9193
FU Asian Office of Aerospace Research and Development (AOARD)
FX The authors acknowledge the Asian Office of Aerospace Research and
   Development (AOARD) for the financial support and Institute Nanoscience
   Initiative (INI), Indian Institute of Science, Bangalore, India for the
   required research facilities.
NR 54
TC 29
Z9 29
U1 5
U2 43
PU ELSEVIER SCIENCE SA
PI LAUSANNE
PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND
SN 0921-5093
J9 MAT SCI ENG A-STRUCT
JI Mater. Sci. Eng. A-Struct. Mater. Prop. Microstruct. Process.
PD APR 1
PY 2012
VL 540
BP 152
EP 163
DI 10.1016/j.msea.2012.01.120
PG 12
WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary;
   Metallurgy & Metallurgical Engineering
SC Science & Technology - Other Topics; Materials Science; Metallurgy &
   Metallurgical Engineering
GA 921XO
UT WOS:000302511600020
ER

PT J
AU Courtney, MW
   Courtney, AC
AF Courtney, Michael W.
   Courtney, Amy C.
TI Using sound of target impact for acoustic reconstructions of shooting
   events
SO MEDICINE SCIENCE AND THE LAW
LA English
DT Article
AB The sound of a bullet hitting a target is sometimes discernable in an audio recording of a shooting event and can be used to determine the distance from shooter to target. This paper provides an example where the microphone is adjacent to the shooter and presents the simple mathematics needed in cases where the microphone is adjacent to the target. Spectrograms of the sound of bullet impact on a human-sized animal are also presented.
C1 [Courtney, Michael W.] USAF Acad, Colorado Springs, CO 80840 USA.
   [Courtney, Amy C.] BTG Res, Colorado Springs, CO 80962 USA.
RP Courtney, MW (reprint author), USAF Acad, 2354 Fairchild Dr, Colorado Springs, CO 80840 USA.
EM michael.courtney@usafa.edu
FU BTG Research; United States Air Force Academy
FX The experiment and preliminary analysis were funded by BTG Research.
   Final data analysis and writing of the paper were partially supported by
   the United States Air Force Academy.
NR 1
TC 0
Z9 0
U1 0
U2 4
PU ROYAL SOC MEDICINE PRESS LTD
PI LONDON
PA 1 WIMPOLE STREET, LONDON W1G 0AE, ENGLAND
SN 0025-8024
J9 MED SCI LAW
JI Med. Sci. Law
PD APR
PY 2012
VL 52
IS 2
BP 89
EP 92
DI 10.1258/msl.2011.010117
PG 4
WC Law; Medicine, Legal; Pathology
SC Government & Law; Legal Medicine; Pathology
GA 928NC
UT WOS:000302988600005
PM 22422783
ER

PT J
AU Brown, A
   McGuire, S
   Sherman, P
   Kochumov, P
AF Brown, Anthony
   McGuire, Stephen
   Sherman, Paul
   Kochumov, Peter
TI White Matter Hyperintensities and Necrosis in High Altitude Pilots with
   Neurologic Decompression Sickness
SO NEUROLOGY
LA English
DT Meeting Abstract
CT 64th Annual Meeting of the American-Academy-of-Neurology (AAN)
CY APR 21-28, 2012
CL New Orleans, LA
SP Amer Acad Neurol (AAN)
C1 [Brown, Anthony] Univ Texas Hlth Sci Ctr San Antonio, San Antonio, TX 78229 USA.
   [McGuire, Stephen] Wilford Hall USAF Med Ctr, Lackland AFB, TX 78236 USA.
   [Sherman, Paul] San Antonio Mil Med Ctr, Ft Sam Houston, TX USA.
   [Kochumov, Peter] Univ Maryland, Sch Med, Baltimore, MD 21201 USA.
NR 0
TC 0
Z9 0
U1 1
U2 1
PU LIPPINCOTT WILLIAMS & WILKINS
PI PHILADELPHIA
PA 530 WALNUT ST, PHILADELPHIA, PA 19106-3621 USA
SN 0028-3878
J9 NEUROLOGY
JI Neurology
PD APR
PY 2012
VL 78
SU 1
MA P03154
PG 1
WC Clinical Neurology
SC Neurosciences & Neurology
GA 931GQ
UT WOS:000303204801428
ER

PT J
AU Robinson, A
   Sherman, P
   Kochumov, P
   Grogan, P
   McGuire, S
AF Robinson, Andrew
   Sherman, Paul
   Kochumov, Peter
   Grogan, Patrick
   McGuire, Stephen
TI Prevalence of Neurologic Decompression Sickness and Necrotic Brain
   Lesions in High-Altitude Pilots
SO NEUROLOGY
LA English
DT Meeting Abstract
CT 64th Annual Meeting of the American-Academy-of-Neurology (AAN)
CY APR 21-28, 2012
CL New Orleans, LA
SP Amer Acad Neurol (AAN)
C1 [Robinson, Andrew] Brooke Army Med Ctr, Dept Neurol, San Antonio, TX USA.
   [Sherman, Paul] 59th Med Wing, Dept Neuroradiol, Lackland AFB, TX USA.
   [Kochumov, Peter] Univ Maryland, Sch Med, Dept Psychiat, Baltimore, MD 21201 USA.
   [Grogan, Patrick] 59th Med Wing, Dept Neurol, San Antonio, TX USA.
   [McGuire, Stephen] USAFSAM FECN, Dept Neurol, Lackland AFB, TX USA.
NR 0
TC 0
Z9 0
U1 1
U2 1
PU LIPPINCOTT WILLIAMS & WILKINS
PI PHILADELPHIA
PA 530 WALNUT ST, PHILADELPHIA, PA 19106-3621 USA
SN 0028-3878
J9 NEUROLOGY
JI Neurology
PD APR
PY 2012
VL 78
SU 1
MA S08005
PG 2
WC Clinical Neurology
SC Neurosciences & Neurology
GA 931GQ
UT WOS:000303204800417
ER

PT J
AU Raghavan, RS
AF Raghavan, R. S.
TI Statistical Interpretation of a Data Adaptive Clutter Subspace
   Estimation Algorithm
SO IEEE TRANSACTIONS ON AEROSPACE AND ELECTRONIC SYSTEMS
LA English
DT Article
ID INVARIANT RANDOM-PROCESSES; COVARIANCE-MATRIX ESTIMATION; SPHERICALLY
   INVARIANT; INTERFERENCE; CANCELLATION; RADAR; PERFORMANCE; DETECTORS
AB Detection algorithms in a nonhomogeneous clutter environment have to contend with the problem of excessive false alarm rates when the clutter is not sufficiently suppressed. Prior to signal detection, adaptive receivers must either "null" or "whiten" the clutter. The former approach requires estimates of the basis vectors of the clutter subspace while the latter requires estimates of the covariance matrix of the clutter. It may be preferable to null the clutter when the dimensionality of the clutter subspace (M) is small in comparison to the length of the data vector coherently processed (N) and also when the signal to be detected is not substantially within the clutter-plus-noise subspace. Depending on the scenario, radar clutter data may have a variety of effects such as clutter discretes, data dropouts due to terrain masking that cause shadowing, multipath effects, and non-Gaussian amplitude statistics. We consider a statistical model which can account for some of these effects and apply the model to design an algorithm to obtain a maximum likelihood estimate (MLE) of the orthonormal basis vectors of the clutter-plus-noise subspace. We show that the problem can be reformulated to develop a recursive approach for MLE based on the expectation-maximization (EM) algorithm. Results of the analysis show that each training vector must be scaled by a nonnegative scale factor from the interval [0,1] prior to subspace estimation. The scale factor applied to each training vector increases monotonically with the subspace clutter-plus-noise power of the vector. Conditions for the existence and uniqueness of the solution are considered. A statistical interpretation of the solution is provided along with sample simulation results.
C1 USAF, Res Lab, Wright Patterson AFB, OH 45433 USA.
RP Raghavan, RS (reprint author), USAF, Res Lab, Bldg 620,2241 Avion Circle, Wright Patterson AFB, OH 45433 USA.
EM ramachandran.raghavan@wpafb.af.mil
NR 34
TC 16
Z9 17
U1 0
U2 5
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 0018-9251
J9 IEEE T AERO ELEC SYS
JI IEEE Trans. Aerosp. Electron. Syst.
PD APR
PY 2012
VL 48
IS 2
BP 1370
EP 1384
DI 10.1109/TAES.2012.6178068
PG 15
WC Engineering, Aerospace; Engineering, Electrical & Electronic;
   Telecommunications
SC Engineering; Telecommunications
GA 923VE
UT WOS:000302647400030
ER

PT J
AU Wei, SQ
   Kannan, R
   Chakravarthy, V
   Rangaswamy, M
AF Wei, Shuangqing
   Kannan, Rajgopal
   Chakravarthy, Vasu
   Rangaswamy, Murali
TI CSI Usage over Parallel Fading Channels under Jamming Attacks: A Game
   Theory Study
SO IEEE TRANSACTIONS ON COMMUNICATIONS
LA English
DT Article
DE Jamming; zero-sum game; parallel fading channels; channel state
   information (CSI)
ID INFORMATION; CAPACITY; NOISE
AB Consider a parallel channel with M independent flat-fading subchannels. There exists a smart jammer which has possession of a copy of perfect channel state information (CSI) measured and sent back by a receiver to its transmitter. Under this model, a class of two-person zero-sum games is investigated where either achievable mutual information rate or Chernoff bound is taken as the underlying pay-off function with the strategy space of each player determined by respective power control and hopping functions. More specifically, we have tackled and answered the following three fundamental questions. The first one is about whether the transmitter and jammer should hop or fully use all degrees of freedom over the entire parallel channels given the full CSI available to both of them, i.e. to hop or not to hop. The second question is about the impact of sending back CSI on system performance considering that the smart jammer can exploit CSI to further enhance its interference effects, i.e. to feedback or not to feedback. The last question is about whether the amount of feedback information can be reduced given the mutual restrictions between transmitter and jammer, i.e. when to feedback and when not to.
C1 [Wei, Shuangqing] Louisiana State Univ, Dept Elect & Comp Engn, Baton Rouge, LA 70803 USA.
   [Kannan, Rajgopal] Louisiana State Univ, Dept Comp Sci, Baton Rouge, LA 70803 USA.
   [Chakravarthy, Vasu; Rangaswamy, Murali] USAF, Res Lab, Wright Patterson AFB, OH USA.
RP Wei, SQ (reprint author), Louisiana State Univ, Dept Elect & Comp Engn, Baton Rouge, LA 70803 USA.
EM swei@lsu.edu; rkannan@csc.lsu.edu; vasu.Chakravarthy@wpafb.af.mil;
   Muralid-har.Rangaswamy@wpafb.af.mil
FU NSF [CNS-1018273, IIS-A0905478]; AFOSR [FA9550-10-1-0448]
FX S. Wei's work is partly supported by NSF under grant CNS-1018273. R.
   Kannan's work is partly supported by NSF under grants CNS-1018273 and
   IIS-A0905478 and AFOSR #FA9550-10-1-0448.
NR 28
TC 9
Z9 9
U1 0
U2 4
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 0090-6778
J9 IEEE T COMMUN
JI IEEE Trans. Commun.
PD APR
PY 2012
VL 60
IS 4
BP 1167
EP 1175
DI 10.1109/TCOMM.2012.021712.100018
PG 9
WC Engineering, Electrical & Electronic; Telecommunications
SC Engineering; Telecommunications
GA 928CN
UT WOS:000302957900030
ER

PT J
AU Ikuma, T
   Naraghi-Pour, M
   Lewis, T
AF Ikuma, Takeshi
   Naraghi-Pour, Mort
   Lewis, Thomas
TI Predictive Quantization of Range-Focused SAR Raw Data
SO IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING
LA English
DT Article
DE Autoregressive (AR) model; differential pulse code modulation (DPCM);
   predictive quantization; spotlight-mode SAR; synthetic aperture radar
   (SAR); trellis-coded quantization (TCQ)
ID TRELLIS-CODED QUANTIZATION; SYNTHETIC-APERTURE RADAR; BLOCK ADAPTIVE
   QUANTIZATION; VECTOR QUANTIZATION; DATA-COMPRESSION; MEMORYLESS;
   ALPHABETS; TRANSFORM
AB Synthetic aperture radar (SAR) systems create massive amounts of data which require huge resources for transmission or storage. The limited capacity of the downlink channel demands efficient onboard compression of SAR data. However, SAR raw data exhibit very little correlation which can be exploited in a compression algorithm. Range focusing is shown to increase the data correlation by exposing some of the distinctive features of the scene under surveillance. In this paper, we first present analysis of spotlight-mode SAR to show the source of the increased correlation in the range-focused data. Next, we propose two algorithms-transform-domain block predictive quantization (TD-BPQ) and transform-domain block predictive trellis-coded quantization (TD-BPTCQ)-for the compression of the range-focused data. Experimental results indicate that, at the rate of 1 bit/sample, and for similar or lower computational complexity, TD-BPQ and TD-BPTCQ outperform the best method proposed in the literature by 1.5 and 2.3 dB in signal-to-quantization-noise ratio, respectively. Similar improvements are observed for the rate of 2 bits/sample.
C1 [Ikuma, Takeshi] Louisiana State Univ, Dept Otolaryngol, Heath Sci Ctr, New Orleans, LA 70112 USA.
   [Naraghi-Pour, Mort] Louisiana State Univ, Dept Elect & Comp Engn, Baton Rouge, LA 70803 USA.
   [Lewis, Thomas] USAF, Res Lab, RWGS, Eglin AFB, FL 32542 USA.
RP Ikuma, T (reprint author), Louisiana State Univ, Dept Otolaryngol, Heath Sci Ctr, New Orleans, LA 70112 USA.
EM tikuma@gmail.com; naraghi@lsu.edu; Thomas.Lewis@eglin.af.mil
FU Air Force Research Laboratory/Clarkson Aerospace Corporation
   [FA8650-05-D-191]
FX This work was supported in part by the Minority Leaders Program of Air
   Force Research Laboratory/Clarkson Aerospace Corporation under Prime
   Contract FA8650-05-D-191. This paper was presented in part at the IEEE
   International Geoscience and Remote Sensing Symposium 2010, Honolulu,
   HI.
NR 34
TC 2
Z9 3
U1 0
U2 2
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 APR
PY 2012
VL 50
IS 4
BP 1340
EP 1348
DI 10.1109/TGRS.2011.2167236
PG 9
WC Geochemistry & Geophysics; Engineering, Electrical & Electronic; Remote
   Sensing; Imaging Science & Photographic Technology
SC Geochemistry & Geophysics; Engineering; Remote Sensing; Imaging Science
   & Photographic Technology
GA 922EH
UT WOS:000302529100028
ER

PT J
AU Davis, VA
   Mandell, MJ
   Cooke, DL
   Wheelock, AT
   Roth, CJ
AF Davis, V. A.
   Mandell, M. J.
   Cooke, D. L.
   Wheelock, A. T.
   Roth, C. J.
TI Nascap-2k Self-Consistent Simulations of a VLF Plasma Antenna
SO IEEE TRANSACTIONS ON PLASMA SCIENCE
LA English
DT Article
DE Aerospace simulation; antenna theory; electric potential; plasmas;
   plasma sheaths; space environment effects; space plasma; space plasma
   interactions; space vehicles; surface charging
ID PRECIPITATION; ELECTRONS
AB We simulate the plasma response through tens of cycles of the Demonstration and Science Experiments (DSX) kilovolt near-square-wave very low frequency (VLF) (0.1-50 kHz) antenna in Medium Earth Orbit plasma with Nascap-2k. DSX is an Air Force Research Laboratory experiment that will explore the physics of electromagnetic wave injection from space transmitters, wave propagation, and wave-particle interactions in the magnetosphere. DSX will transmit and receive VLF waves and quantify their effect on the trapped electron populations in the magnetosphere. In these preflight calculations, the plasma is modeled with a hybrid particle-in-cell (PIC) approach with PIC ions and fluid barometric electron densities. The plasma response, collected ion currents, and chassis floating potential are computed self-consistently with a near-square-wave bias applied to the antennas. Particle injection and splitting are used to replenish the plasma depleted at the boundary, represent the thermal distribution, and maintain appropriately sized macroparticles. Therefore, limitation of current due to the thermal distribution of ions and the resulting angular momentum barrier is included. Above the ion plasma frequency, the plasma current lags the voltage by about 10 degrees, while below the ion plasma frequency, the current leads the voltage by about 7 degrees. The volume ion current shows periodic launch of blocks of energetic ions radially outward.
C1 [Davis, V. A.; Mandell, M. J.] Sci Applicat Int Corp, San Diego, CA 92121 USA.
   [Cooke, D. L.; Wheelock, A. T.] USAF, Res Lab, Space Vehicles Directorate, Kirtland AFB, NM 87117 USA.
   [Roth, C. J.] Atmospher & Environm Res Inc, Lexington, MA 02421 USA.
RP Davis, VA (reprint author), Sci Applicat Int Corp, San Diego, CA 92121 USA.
EM victoria.a.davis@saic.com; myron.j.mandell@saic.com;
   david.cooke@kirtland.af.mil; adrian.wheelock@kirtland.af.mil;
   Christopher.Roth.ctr@hanscom.af.mil
NR 12
TC 0
Z9 0
U1 0
U2 5
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 0093-3813
J9 IEEE T PLASMA SCI
JI IEEE Trans. Plasma Sci.
PD APR
PY 2012
VL 40
IS 4
BP 1239
EP 1247
DI 10.1109/TPS.2012.2186569
PG 9
WC Physics, Fluids & Plasmas
SC Physics
GA 924UM
UT WOS:000302716800038
ER

PT J
AU Lukishova, SG
   Bissell, LJ
   Winkler, J
   Stroud, CR
AF Lukishova, Svetlana G.
   Bissell, Luke J.
   Winkler, Justin
   Stroud, C. R., Jr.
TI Resonance in quantum dot fluorescence in a photonic bandgap liquid
   crystal host
SO OPTICS LETTERS
LA English
DT Article
ID DYE MOLECULE FLUORESCENCE; SEMICONDUCTOR NANOCRYSTALS; STOP BAND
AB Microcavity resonance is demonstrated in nanocrystal quantum dot fluorescence in a one-dimensional (1D) chiral photonic bandgap cholesteric-liquid crystal host under cw excitation. The resonance demonstrates coupling between quantum dot fluorescence and the cholesteric microcavity. Observed at a band edge of a photonic stop band, this resonance has circular polarization due to microcavity chirality with 4.9 times intensity enhancement in comparison with polarization of the opposite handedness. The circular-polarization dissymmetry factor g(e) of this resonance is similar to 1.3. We also demonstrate photon antibunching of a single quantum dot in a similar glassy cholesteric microcavity. These results are important in cholesteric-laser research, in which so far only dyes were used, as well as for room-temperature single-photon source applications. (C) 2012 Optical Society of America
C1 [Lukishova, Svetlana G.; Bissell, Luke J.; Stroud, C. R., Jr.] Univ Rochester, Inst Opt, Rochester, NY 14627 USA.
   [Bissell, Luke J.] USAF, Res Lab, Wright Patterson AFB, OH 45433 USA.
   [Winkler, Justin] Univ Rochester, Dept Phys & Astron, Rochester, NY 14627 USA.
RP Lukishova, SG (reprint author), Univ Rochester, Inst Opt, Rochester, NY 14627 USA.
EM sluk@lle.rochester.edu
FU NSF [ECS-0420888, EHR-0633621, EHR-0920500]; DoD; NASA
FX We thank K. Marshall for access to the LC clean room of the Laboratory
   for Laser Energetics. This work was supported by the NSF (ECS-0420888,
   EHR-0633621 and EHR-0920500). L. B. was supported by the DoD SMART
   fellowship. J.W. is supported by a NASA STR fellowship.
NR 23
TC 26
Z9 26
U1 3
U2 24
PU OPTICAL SOC AMER
PI WASHINGTON
PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA
SN 0146-9592
J9 OPT LETT
JI Opt. Lett.
PD APR 1
PY 2012
VL 37
IS 7
BP 1259
EP 1261
PG 3
WC Optics
SC Optics
GA 925NP
UT WOS:000302768300042
PM 22466214
ER

PT J
AU Ball, DW
AF Ball, David W.
TI Maxwell's Equations, Part VI
SO SPECTROSCOPY
LA English
DT Article
AB Maxwell's equations are expressed in the language of vector calculus, so a significant part of some previous installments in this series have been devoted to explaining vector calculus, not spectroscopy. In this installment, we will generalize our results from last time and consider how it applies to one of Maxwell's equations.
C1 [Ball, David W.] Cleveland State Univ, Cleveland, OH 44115 USA.
RP Ball, DW (reprint author), USAF Acad, Colorado Springs, CO 80840 USA.
EM d.ball@csuohio.edu
NR 4
TC 1
Z9 1
U1 0
U2 0
PU ADVANSTAR COMMUNICATIONS INC
PI DULUTH
PA 131 W 1ST STREET, DULUTH, MN 55802 USA
SN 0887-6703
J9 SPECTROSCOPY-US
JI Spectroscopy
PD APR
PY 2012
VL 27
IS 4
BP 16
EP 21
PG 6
WC Spectroscopy
SC Spectroscopy
GA 927FC
UT WOS:000302891500001
ER

PT J
AU Maixner, MR
   McDaniel, DR
AF Maixner, Michael R.
   McDaniel, David R.
TI Preliminary calculations for a flexible cable in steady, non-uniform
   flow
SO AEROSPACE SCIENCE AND TECHNOLOGY
LA English
DT Article
DE Flexible cable; Pode; Tethers; Balloons; Buoys
AB Pode's closed-form solution provides the shape and tension within a flexible cable tethered to a balloon or buoy subjected to a steady, two-dimensional uniform current. When the flow is non-uniform, the velocity field must be decomposed into an approximate step-wise ("polygonal") distribution, and a starting point for the calculations assumed. A simple and robust solution methodology is proposed which discretizes the cable and employs static equilibrium of each element and an optimization technique to determine the shape and tension for the cable. A parametric study revealed that the proposed model agreed exceptionally well with Pode's closed form solution for uniform velocity distributions in both tension and position, even with a small number of elements. Excellent agreement was obtained for tension between all three methods. For a non-uniform velocity field, cable shape and tension are calculated; no closed-form solution was available for comparison in this case. Positions predicted by the polygonal method approached those obtained by the proposed model, but only with an order of magnitude more elements than with the proposed method; agreement in tension was excellent. The model has also been applied to multiple balloons, and, by changing the fluid medium, may be readily extended to water buoys. Published by Elsevier Masson SAS.
C1 [Maixner, Michael R.] USAF Acad, DFEM, Dept Engn Mech, Colorado Springs, CO 80840 USA.
   [McDaniel, David R.] Dept Mech Engn, Birmingham, AL 35294 USA.
RP Maixner, MR (reprint author), USAF Acad, DFEM, Dept Engn Mech, 2354 Fairchild Dr,Suite 6L-155, Colorado Springs, CO 80840 USA.
EM michael.maixner@usafa.edu; drmcd@uab.edu
NR 12
TC 2
Z9 2
U1 0
U2 5
PU ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER
PI PARIS
PA 23 RUE LINOIS, 75724 PARIS, FRANCE
SN 1270-9638
J9 AEROSP SCI TECHNOL
JI Aerosp. Sci. Technol.
PD APR-MAY
PY 2012
VL 18
IS 1
BP 1
EP 7
DI 10.1016/j.ast.2011.03.009
PG 7
WC Engineering, Aerospace
SC Engineering
GA 925MY
UT WOS:000302766500001
ER

PT J
AU DeBonis, JR
   Oberkampf, WL
   Wolf, RT
   Orkwis, PD
   Turner, MG
   Babinsky, H
   Benek, JA
AF DeBonis, James R.
   Oberkampf, William L.
   Wolf, Richard T.
   Orkwis, Paul D.
   Turner, Mark G.
   Babinsky, Holger
   Benek, John A.
TI Assessment of Computational Fluid Dynamics and Experimental Data for
   Shock Boundary-Layer Interactions
SO AIAA JOURNAL
LA English
DT Article; Proceedings Paper
CT 28th AIAA Applied Aerodynamics Conference
CY JUN 28-JUL 01, 2010
CL Chicago, IL
SP AIAA
ID PARTICLE IMAGE VELOCIMETRY; FLOWS; MODEL
AB A workshop on the computational fluid dynamics (CFD) prediction of shock boundary-layer interactions (SBLIs) was held at the 48th AIAA Aerospace Sciences Meeting. As part oldie workshop, numerous CFD analysts submitted solutions to four experimentally measured SBLIs. This paper describes the assessment of the CID predictions. The assessment includes an uncertainty analysis of the experimental data, the definition of an error metric, and the application of that metric to the CFD solutions. The CFD solutions provided very similar levels of error and, in general, it was difficult to discern clear trends in the data. For the Reynolds-averaged Navier-Stokes (RANS) methods, the choice of turbulence model appeared to be the largest factor in solution accuracy. Scale-resolving methods, such as large-eddy simulation (LES), hybrid RANS/LES, and direct numerical simulation, produced error levels similar to RANS methods but provided superior predictions of normal stresses.
C1 [DeBonis, James R.] NASA, John H Glenn Res Ctr Lewis Field, Inlet & Nozzle Branch, Cleveland, OH 44135 USA.
   [Oberkampf, William L.] WLO Consulting, Austin, TX 78633 USA.
   [Wolf, Richard T.; Orkwis, Paul D.; Turner, Mark G.] Univ Cincinnati, Dept Aerosp Engn, Cincinnati, OH 45221 USA.
   [Babinsky, Holger] Univ Cambridge, Dept Engn, Cambridge CB2 1PZ, England.
   [Benek, John A.] USAF, Res Lab, Computat Sci Ctr, Air Vehicles Directorate, Wright Patterson AFB, OH 45433 USA.
RP DeBonis, JR (reprint author), NASA, John H Glenn Res Ctr Lewis Field, Inlet & Nozzle Branch, Cleveland, OH 44135 USA.
EM james.r.debonis@nasa.gov; wloconsulting@gmail.com; wolfrt@mail.uc.edu;
   orkwispd@ucmail.uc.edu; turnermr@ucmail.uc.edu; hb@eng.cam.ac.uk;
   john.benek@wpafb.af.mil
NR 26
TC 12
Z9 12
U1 3
U2 16
PU AMER INST AERONAUTICS  ASTRONAUTICS
PI RESTON
PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091-4344 USA
SN 0001-1452
J9 AIAA J
JI AIAA J.
PD APR
PY 2012
VL 50
IS 4
BP 891
EP 903
DI 10.2514/1.J051341
PG 13
WC Engineering, Aerospace
SC Engineering
GA 918UQ
UT WOS:000302277000012
ER

PT J
AU Stanford, B
   Beran, P
   Kobayashi, M
AF Stanford, Bret
   Beran, Philip
   Kobayashi, Marcelo
TI Aeroelastic Optimization of Flapping Wing Venation: A Cellular Division
   Approach
SO AIAA JOURNAL
LA English
DT Article; Proceedings Paper
CT 52nd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and
   Materials Conference (SDM) / 19th AIAA/ASME/AHS Adaptive Structures
   Conference
CY APR 04-07, 2011
CL Denver, CO
SP AIAA, ASME, ASCE, AHS, ASC
ID MICRO AIR VEHICLES; TOPOLOGY OPTIMIZATION; GENETIC ALGORITHM; MEMBRANE
   WINGS; DESIGN; FLIGHT; MECHANISMS; DYNAMICS; AIRFOIL
AB The aeroelastic response of a biologically inspired flapping membrane wing to unsteady inertial and aerodynamic forces is strongly predicated upon the topological distribution of the underlying skeletal reinforcement (venation patterns). Proper exploitation of this relationship may enable the development of effective flapping wing micro air vehicles. The skeletal topology is parameterized into a developmental program which, when compiled and executed, evolves the wing topology in stages. A genetic algorithm can optimize the details of this program, rather than explicitly considering the topology itself, thus removing the link between design variables and topological geometry resolution. This cellular division tool is coupled to an unsteady aeroelastic representation of a flapping vying in forward flight in order to obtain the Pareto tradeoff curves between thrust generation, lift generation, and input power requirements. The topologies obtained along the front provide an understanding of the key relationships between skeletal topology, aeroelastic behavior, and performance metrics during flapping flight.
C1 [Stanford, Bret] USAF, Res Lab, Universal Technol Corp, AFRL RBSD, Wright Patterson AFB, OH 45433 USA.
   [Kobayashi, Marcelo] Univ Hawaii Manoa, Honolulu, HI 96822 USA.
RP Stanford, B (reprint author), USAF, Res Lab, Universal Technol Corp, AFRL RBSD, Wright Patterson AFB, OH 45433 USA.
EM bret.stanford@wpafb.af.mil; philip.beran@wpafb.af.mil;
   marcelok@hawaii.edu
NR 40
TC 6
Z9 6
U1 1
U2 11
PU AMER INST AERONAUTICS  ASTRONAUTICS
PI RESTON
PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091-4344 USA
SN 0001-1452
EI 1533-385X
J9 AIAA J
JI AIAA J.
PD APR
PY 2012
VL 50
IS 4
BP 938
EP 951
DI 10.2514/1.J051443
PG 14
WC Engineering, Aerospace
SC Engineering
GA 918UQ
UT WOS:000302277000016
ER

PT J
AU Steinberg, AM
   Boxx, I
   Stohr, M
   Meier, W
   Carter, CD
AF Steinberg, Adam M.
   Boxx, Isaac
   Stoehr, Michael
   Meier, Wolfgang
   Carter, Campbell D.
TI Effects of Flow Structure Dynamics on Thermoacoustic Instabilities in
   Swirl-Stabilized Combustion
SO AIAA JOURNAL
LA English
DT Article
ID TURBINE MODEL COMBUSTOR; PROPER ORTHOGONAL DECOMPOSITION; PRECESSING
   VORTEX CORE; LARGE-EDDY SIMULATIONS; COHERENT STRUCTURES; FLAME;
   IDENTIFICATION; OSCILLATIONS; MECHANISMS; JET
AB The thermoacoustic coupling caused by dynamic flow/flame interactions was investigated in a gas-turbine model combustor using high-repetition-rate measurements of the three-component velocity field, OH laser-induced fluorescence, and OH* chemiluminescence. Three fuel-lean, swirl-stabilized flames were investigated, each of which underwent self-excited thermoacoustic pulsations. The most energetic flow structure at each condition was a helical vortex core that circumscribed the combustor at a frequency that was independent of the acoustics. Resolving the measurement sequence with respect to both the phase in the thermoacoustic cycle and the azimuthal position of the helix allowed quantification of the oscillatory flow and flame dynamics. Periodic vortex/flame interactions caused by deformation of the helices generated local heat-release oscillations having spatially complex phase distributions relative to the acoustics. The local thermoacoustic coupling, determined by statistically solving the Rayleigh integral, showed intertwined regions of positive and negative coupling due to these vortices. In the quietest flame, the helical vortex created a large region of negative coupling that helped damp the oscillations. In the louder flames, the shapes of the oscillating vortices and flames were such that large regions of positive coupling were generated, driving the instability. From these observations, flame/vortex configurations that promote stability are identified.
C1 [Steinberg, Adam M.; Boxx, Isaac; Stoehr, Michael; Meier, Wolfgang] German Aerosp Ctr, DLR, Inst Combust Technol, D-70569 Stuttgart, Germany.
   [Carter, Campbell D.] USAF, Res Lab, Adv Prop Div, Wright Patterson AFB, OH 45433 USA.
RP Steinberg, AM (reprint author), Univ Toronto, Inst Aerosp Studies, Toronto, ON M5S 1A1, Canada.
RI Steinberg, Adam/H-5104-2011
OI Steinberg, Adam/0000-0001-6571-6673
NR 46
TC 12
Z9 12
U1 0
U2 17
PU AMER INST AERONAUTICS  ASTRONAUTICS
PI RESTON
PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091-4344 USA
SN 0001-1452
EI 1533-385X
J9 AIAA J
JI AIAA J.
PD APR
PY 2012
VL 50
IS 4
BP 952
EP 967
DI 10.2514/1.J051466
PG 16
WC Engineering, Aerospace
SC Engineering
GA 918UQ
UT WOS:000302277000017
ER

PT J
AU Harris, TR
   Priyadarshi, S
   Melamed, S
   Ortega, C
   Manohar, R
   Dooley, SR
   Kriplani, NM
   Davis, WR
   Franzon, PD
   Steer, MB
AF Harris, T. Robert
   Priyadarshi, Shivam
   Melamed, Samson
   Ortega, Carlos
   Manohar, Rajit
   Dooley, Steven R.
   Kriplani, Nikhil M.
   Davis, W. Rhett
   Franzon, Paul D.
   Steer, Michael B.
TI A Transient Electrothermal Analysis of Three-Dimensional Integrated
   Circuits
SO IEEE TRANSACTIONS ON COMPONENTS PACKAGING AND MANUFACTURING TECHNOLOGY
LA English
DT Article
DE 3DIC; electrothermal effects; thermal management; transient analysis
ID THERMAL-ANALYSIS; VLSI CHIPS; TEMPERATURE; SIMULATOR
AB A transient electrothermal simulation of a 3-D integrated circuit (3DIC) is reported that uses dynamic modeling of the thermal network and hierarchical electrothermal simulation. This is a practical alternative to full transistor electrothermal simulations that are computationally prohibitive. Simulations are compared to measurements for a token-generating asynchronous 3DIC clocking at a maximum frequency of 1 GHz. The electrical network is based on computationally efficient electrothermal macromodels of standard and custom cells. These are linked in a physically consistent manner with a detailed thermal network extracted from an OpenAccess layout file. Coupled with model-order reduction techniques, hierarchical dynamic electrothermal simulation of large 3DICs is shown to be tractable, yielding spatial and temporal selected transistor-level thermal profiles.
C1 [Harris, T. Robert; Priyadarshi, Shivam; Melamed, Samson; Kriplani, Nikhil M.; Davis, W. Rhett; Franzon, Paul D.; Steer, Michael B.] N Carolina State Univ, Dept Elect & Comp Engn, Raleigh, NC 27695 USA.
   [Ortega, Carlos; Manohar, Rajit] Cornell Univ, Dept Elect & Comp Engn, Ithaca, NY 14853 USA.
   [Dooley, Steven R.] USAF, Sensors Directorate Dept, Res Lab, Wright Patterson AFB, OH 45433 USA.
RP Harris, TR (reprint author), N Carolina State Univ, Dept Elect & Comp Engn, Raleigh, NC 27695 USA.
EM trharris@ieee.org; spriyad@ncsu.edu; samson.melamed@ncsu.edu;
   cto3@cornell.edu; rajit@csl.cornell.edu; steven.dooley@wpafb.af.mil;
   nmkripla@ncsu.edu; rhett_davis@ncsu.edu; paulf@ncsu.edu; mbs@ncsu.edu
OI Melamed, Samson/0000-0001-9225-5243
FU DARPA [FA8650-04-C-7127]; National Science Foundation [643700]
FX Manuscript received February 22, 2011; revised October 24, 2011;
   accepted October 26, 2011. Date of publication January 12, 2012; date of
   current version March 30, 2012. This work was funded by DARPA under
   Agreement FA8650-04-C-7127, managed by the Air Force Research
   Laboratory. Additional funding was provided by the National Science
   Foundation under Grant 643700. Recommended for publication by Associate
   Editor M. K. Iyengar upon evaluation of reviewers' comments.
NR 28
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U1 2
U2 16
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 2156-3950
J9 IEEE T COMP PACK MAN
JI IEEE Trans. Compon. Pack. Manuf. Technol.
PD APR
PY 2012
VL 2
IS 4
BP 660
EP 667
DI 10.1109/TCPMT.2011.2178414
PG 8
WC Engineering, Manufacturing; Engineering, Electrical & Electronic;
   Materials Science, Multidisciplinary
SC Engineering; Materials Science
GA 922GJ
UT WOS:000302534900014
ER

PT J
AU Alqadah, HF
   Ferrara, M
   Fan, H
   Parker, JT
AF Alqadah, Hatim F.
   Ferrara, Matthew
   Fan, Howard
   Parker, Jason T.
TI Single Frequency Inverse Obstacle Scattering: A Sparsity Constrained
   Linear Sampling Method Approach
SO IEEE TRANSACTIONS ON IMAGE PROCESSING
LA English
DT Article
DE Backprojection; inverse scattering; linear sampling method (LSM); sparse
   regularization; total variation
ID LEAST-SQUARES; REGULARIZATION; RECONSTRUCTION; UNIQUENESS
AB The linear sampling method (LSM) offers a qualitative image reconstruction approach, which is known as a viable alternative for obstacle support identification to the well-studied filtered backprojection (FBP), which depends on a linearized forward scattering model. Of practical interest is the imaging of obstacles from sparse aperture far-field data under a fixed single frequency mode of operation. Under this scenario, the Tikhonov regularization typically applied to LSM produces poor images that fail to capture the obstacle boundary. In this paper, we employ an alternative regularization strategy based on constraining the sparsity of the solution's spatial gradient. Two regularization approaches based on the spatial gradient are developed. A numerical comparison to the FBP demonstrates that the new method's ability to account for aspect-dependent scattering permits more accurate reconstruction of concave obstacles, whereas a comparison to Tikhonov-regularized LSM demonstrates that the proposed approach significantly improves obstacle recovery with sparse-aperture data.
C1 [Alqadah, Hatim F.; Fan, Howard] Univ Cincinnati, Dept Elect & Comp Engn, Cincinnati, OH 45221 USA.
   [Ferrara, Matthew] Matrix Res Inc, Dayton, OH 45432 USA.
   [Parker, Jason T.] USAF, Res Lab, Sensors Directorate, Wright Patterson AFB, OH 45433 USA.
RP Alqadah, HF (reprint author), Univ Cincinnati, Dept Elect & Comp Engn, Cincinnati, OH 45221 USA.
EM alqadahf@mail.uc.edu; matthew.ferrara@matrixresearch.com;
   jason.parker@wpafb.af.mil
FU Dayton Area Graduate Studies Initiative; Air Force Office of Scientific
   Research
FX Manuscript received February 15, 2011; revised June 30, 2011; accepted
   October 18, 2011. Date of publication December 02, 2011; date of current
   version March 21, 2012. The work of H. F. Alqadah was supported by the
   Dayton Area Graduate Studies Initiative. The work of J. T. Parker and M.
   Ferrera was supported by the Air Force Office of Scientific Research
   under the direction of A. Nachman. The associate editor coordinating the
   review of this manuscript and approving it for publication was Prof.
   Brian D. Rigling.
NR 35
TC 2
Z9 2
U1 0
U2 9
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 1057-7149
J9 IEEE T IMAGE PROCESS
JI IEEE Trans. Image Process.
PD APR
PY 2012
VL 21
IS 4
BP 2062
EP 2074
DI 10.1109/TIP.2011.2177992
PG 13
WC Computer Science, Artificial Intelligence; Engineering, Electrical &
   Electronic
SC Computer Science; Engineering
GA 917MP
UT WOS:000302181800050
PM 22155963
ER

PT J
AU Sharma, R
   Beard, RW
   Taylor, CN
   Quebe, S
AF Sharma, Rajnikant
   Beard, Randy W.
   Taylor, Clark N.
   Quebe, Stephen
TI Graph-Based Observability Analysis of Bearing-Only Cooperative
   Localization
SO IEEE TRANSACTIONS ON ROBOTICS
LA English
DT Article
DE Multi-agent navigation; networked robots; non-linear observability
   analysis
ID MULTIROBOT LOCALIZATION
AB In this paper, we investigate the nonlinear observability properties of bearing-only cooperative localization. We establish a link between observability and a graph that represents measurements and communication between the robots. It is shown that graph theoretic properties like the connectivity and the existence of a path between two nodes can be used to explain the observability of the system. We obtain the maximum rank of the observability matrix without global information and derive conditions under which the maximum rank can be achieved. Furthermore, we show that for complete observability, all of the nodes in the graph must have a path to at least two different landmarks of known location.
C1 [Sharma, Rajnikant; Beard, Randy W.; Quebe, Stephen] Brigham Young Univ, Dept Elect & Comp Engn, Provo, UT 84602 USA.
   [Taylor, Clark N.] USAF, Res Lab, Wright Patterson AFB, OH 45433 USA.
RP Sharma, R (reprint author), Brigham Young Univ, Dept Elect & Comp Engn, Provo, UT 84602 USA.
EM raj.drdo@gmail.com; beard@ee.byu.edu; Clark.Taylor@wpafb.af.mil;
   squebe@gmail.com
RI Sharma, Rajnikant/J-3004-2014
FU Air Force Young Investigator Award [FA9550-07-1-0167]
FX This work was supported by an Air Force Young Investigator Award under
   contract FA9550-07-1-0167.
NR 21
TC 11
Z9 14
U1 2
U2 13
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 1552-3098
J9 IEEE T ROBOT
JI IEEE Trans. Robot.
PD APR
PY 2012
VL 28
IS 2
BP 522
EP 529
DI 10.1109/TRO.2011.2172699
PG 8
WC Robotics
SC Robotics
GA 921VC
UT WOS:000302505100020
ER

PT J
AU Kinsey, JS
   Timko, MT
   Herndon, SC
   Wood, EC
   Yu, ZH
   Miake-Lye, RC
   Lobo, P
   Whitefield, P
   Hagen, D
   Wey, C
   Anderson, BE
   Beyersdorf, AJ
   Hudgins, CH
   Thornhill, KL
   Winstead, E
   Howard, R
   Bulzan, DI
   Tacina, KB
   Knighton, WB
AF Kinsey, John S.
   Timko, Michael T.
   Herndon, Scott C.
   Wood, Ezra C.
   Yu, Zhenhong
   Miake-Lye, Richard C.
   Lobo, Prem
   Whitefield, Philip
   Hagen, Donald
   Wey, Changlie
   Anderson, Bruce E.
   Beyersdorf, Andreas J.
   Hudgins, Charles H.
   Thornhill, K. Lee
   Winstead, Edward
   Howard, Robert
   Bulzan, Dan I.
   Tacina, Kathleen B.
   Knighton, W. Berk
TI Determination of the emissions from an aircraft auxiliary power unit
   (APU) during the Alternative Aviation Fuel Experiment (AAFEX)
SO JOURNAL OF THE AIR & WASTE MANAGEMENT ASSOCIATION
LA English
DT Article
ID HYDROCARBON EMISSIONS; JET FUEL; ENGINE; SPECIATION; EXHAUST; FLAMES
AB The emissions from a Garrett-AiResearch (now Honeywell) Model GTCP85-98CK auxiliary power unit (APU) were determined as part of the National Aeronautics and Space Administration's (NASA's) Alternative Aviation Fuel Experiment (AAFEX) using both JP-8 and a coal-derived Fischer Tropsch fuel (FT-2). Measurements were conducted by multiple research organizations for sulfur dioxide (SO2), total hydrocarbons (THC), carbon monoxide (CO), carbon dioxide (CO2), nitrogen oxides (NOx), speciated gas-phase emissions, particulate matter (PM) mass and number black carbon, and speciated PM In addition, particle size distribution (PSD), number-based geometric mean particle diameter (GMD), and smoke number were also determined from the data collected. The results of the research showed PM mass emission indices (EIs) in the range of 20 to 700 mg/kg fuel and PM number EIs ranging from 0.5 x 10(15) to 5 x 10(15) particles/kg fuel depending on engine load and fuel type. In addition, significant reductions in both the SO2 and PM EIs were observed for the use of the FT fuel. These reductions were on the order of similar to 90% for SO2 and particle mass EIs and similar to 60% for the particle number El, with similar decreases observed for black carbon. Also, the size of the particles generated by JP-8 combustion are noticeably larger than those emitted by the APU burning the FT fuel with the geometric mean diameters ranging from 20 to 50 nm depending on engine load and fuel type. Finally, both particle-bound sulfate and organics were reduced during FT-2 combustion. The PM sulfate was reduced by nearly 100% due to lack of sulfur in the fuel, with the PM organics reduced by a factor of similar to 5 as compared with JP-8.
   Implications: The results of this research show that APUs can be, depending on the level of fuel usage, an important source of air pollutant emissions at major airports in urban areas. Substantial decreases in emissions can also be achieved through the use of Fischer Tropsch (FT) fuel. Based on these results, the use of FT fuel could be a viable future control strategy for both gas- and particle-phase air pollutants.
   Supplemental Data: Supplemental data is available for this article. Go to the publisher's online edition of the Journal of the Air & Waste Management Association for information on the test participants, description of the APU, fuel composition, sampling probes and instrumentation, test matrix, benzene to formaldehyde ratios, and speciated emissions by particle size.
C1 [Kinsey, John S.] US EPA, Off Res & Dev, Natl Risk Management Res Lab, Res Triangle Pk, NC 27711 USA.
   [Timko, Michael T.; Herndon, Scott C.; Wood, Ezra C.; Yu, Zhenhong; Miake-Lye, Richard C.] Aerodyne Res Inc, Billerica, MA 01821 USA.
   [Hagen, Donald] Missouri Univ Sci & Technol, Ctr Excellence Aerosp Particulate Emiss Reduct Re, Cloud & Aerosol Sci Lab, Rolla, MO USA.
   [Wey, Changlie] NASA, ASRC Aerosp Corp, John Glenn Res Ctr, Cleveland, OH USA.
   [Anderson, Bruce E.; Beyersdorf, Andreas J.] NASA, Langley Res Ctr, Chem & Dynam Branch, Sci Directorate, Hampton, VA 23665 USA.
   [Hudgins, Charles H.; Thornhill, K. Lee; Winstead, Edward] Sci Syst & Applicat Inc, Hampton, VA USA.
   [Howard, Robert] USAF, Arnold Engn Dev Ctr, Aerosp Testing Alliance, Arnold AFB, TN USA.
   [Knighton, W. Berk] Montana State Univ, Dept Chem, Bozeman, MT 59717 USA.
   [Bulzan, Dan I.; Tacina, Kathleen B.] NASA, Combust Branch, John Glenn Res Ctr, Cleveland, OH USA.
   [Miake-Lye, Richard C.] Ctr AeroThermodynam, Billerica, MA 01821 USA.
RP Kinsey, JS (reprint author), US EPA, Off Res & Dev, Natl Risk Management Res Lab, MD E343-02,109 TW Alexander Dr, Res Triangle Pk, NC 27711 USA.
RI Kinsey, John/A-8335-2009; Beyersdorf, Andreas/N-1247-2013; Lobo,
   Prem/E-8860-2013
OI Lobo, Prem/0000-0003-0626-6646
FU Federal Aviation Administration (FAA); FAA/NASA/Transport Canada
   [07-C-NE-UMR]; NASA [NNC07CB57C]
FX MST and Aerodyne were funded by the Federal Aviation Administration
   (FAA) through the Partnership for AiR Transportation for Noise and
   Emissions Reduction (PARTNER), an FAA/NASA/Transport Canada sponsored
   Center of Excellence, under Grant No. 07-C-NE-UMR Amendments 006 and 007
   (Carl Ma, project manager). Any opinions, findings, and conclusions or
   recommendations expressed in this paper are those of the authors and do
   not necessarily reflect the views of the FAA. In addition, the Aerodyne
   PM measurements were supported through NASA Contract No. NNC07CB57C.
NR 27
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Z9 11
U1 4
U2 24
PU TAYLOR & FRANCIS INC
PI PHILADELPHIA
PA 325 CHESTNUT ST, SUITE 800, PHILADELPHIA, PA 19106 USA
SN 1096-2247
J9 J AIR WASTE MANAGE
JI J. Air Waste Manage. Assoc.
PD APR
PY 2012
VL 62
IS 4
BP 420
EP 430
DI 10.1080/10473289.2012.655884
PG 11
WC Engineering, Environmental; Environmental Sciences; Meteorology &
   Atmospheric Sciences
SC Engineering; Environmental Sciences & Ecology; Meteorology & Atmospheric
   Sciences
GA 921UW
UT WOS:000302504500006
PM 22616284
ER

PT J
AU Coldren, RL
   Brett-Major, DM
   Hickey, PW
   Garges, E
   Weina, PJ
   Corrigan, P
   Quinnan, G
AF Coldren, Rodney L.
   Brett-Major, David M.
   Hickey, Patrick W.
   Garges, Eric
   Weina, Peter J.
   Corrigan, Paula
   Quinnan, Gerald
TI Tropical Medicine Training in the Department of Defense
SO MILITARY MEDICINE
LA English
DT Editorial Material
C1 [Coldren, Rodney L.; Hickey, Patrick W.; Quinnan, Gerald] Uniformed Serv Univ Hlth Sci, Bethesda, MD 20814 USA.
   [Brett-Major, David M.] USN, Med Personnel Training & Educ Command, Bethesda, MD 20889 USA.
   [Garges, Eric; Weina, Peter J.] Walter Reed Army Inst Res, Silver Spring, MD 20910 USA.
   [Corrigan, Paula] USAF, Sch Aerosp Med, Wright Patterson AFB, OH 45433 USA.
RP Coldren, RL (reprint author), Uniformed Serv Univ Hlth Sci, 4301 Jones Bridge Rd, Bethesda, MD 20814 USA.
RI Weina, Peter/A-2120-2011; Valle, Ruben/A-7512-2013
NR 2
TC 0
Z9 0
U1 0
U2 1
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 APR
PY 2012
VL 177
IS 4
BP 361
EP 363
PG 3
WC Medicine, General & Internal
SC General & Internal Medicine
GA 921BF
UT WOS:000302452300004
PM 22594123
ER

PT J
AU Keyser, EA
   Reed, BG
   Gonzalez-Brown, V
   Fausett, MB
   Staat, BC
   Leath, CA
AF Keyser, Erin A.
   Reed, Beverly G.
   Gonzalez-Brown, Veronica
   Fausett, M. Bardett
   Staat, Barton C.
   Leath, Charles A.
TI Peripartum Cardiomyopathy and Acute Fatty Liver of Pregnancy: One
   Patient With Two Zebras
SO MILITARY MEDICINE
LA English
DT Article
ID DIAGNOSIS; OUTCOMES
AB Objective: Peripartum cardiomyopathy (PPCM) and acute fatty liver of pregnancy (AFLP) are rare complications of pregnancy affecting approximately 1/10,000 pregnancies each. We describe a patient who had biopsy-proven AFLP complicated by PPCM. Methods: Chart review and literature search. Results: The patient is a 22-year-old G5P1213 obese African-American female who presented at 30 weeks gestation with abdominal pain. She had normal blood pressures and mildly elevated liver enzymes. After completion of a 24 hour urine protein collection that was consistent with pre-eclampsia, an induction of labor with uncomplicated vaginal delivery was accomplished. Following delivery, a computed tomography scan of the abdomen revealed significant cardiomegaly. An echocardiogram revealed global dysfunction with an ejection fraction of 10%. Liver biopsy showed AFLP. Attempts to establish a unifying etiology were unrevealing. The PPCM was treated with diuretics and intravenous immunoglobulin. The patient's clinical status deteriorated, eventually requiring continuous dialysis, intubation, pharmacologic and mechanical inotropic support, and a feeding tube. The patient was discharged to a long-term care facility where she subsequently passed away from multiorgan failure. Conclusion: AFLP and PPCM are rare complications of pregnancy. We present a patient who had both. Both diseases carry a high mortality rate, and together, are likely fatal.
C1 [Keyser, Erin A.; Gonzalez-Brown, Veronica; Fausett, M. Bardett; Staat, Barton C.] Wilford Hall USAF Med Ctr, Dept OB GYN, Lackland AFB, TX 78236 USA.
   [Reed, Beverly G.] Langley Hosp, Dept OB GYN, Jb Langley Eustis, VA 23665 USA.
   [Leath, Charles A.] Brooke Army Med Ctr, Dept OB GYN, Div Gynecol Oncol, Ft Sam Houston, TX 78234 USA.
RP Keyser, EA (reprint author), Wilford Hall USAF Med Ctr, Dept OB GYN, 2200 Bergquist Dr,Suite 1, Lackland AFB, TX 78236 USA.
OI Leath III, Charles/0000-0002-4034-6845
NR 15
TC 0
Z9 0
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 APR
PY 2012
VL 177
IS 4
BP 470
EP 473
PG 4
WC Medicine, General & Internal
SC General & Internal Medicine
GA 921BF
UT WOS:000302452300022
PM 22594141
ER

PT J
AU Loughlin, MT
   Duncan, TJ
AF Loughlin, Michael T.
   Duncan, Timothy J.
TI Iatrogenic Pneumomediastinum and Subcutaneous Emphysema as a
   Complication of Colonoscopy With Cold Forceps Biopsy
SO MILITARY MEDICINE
LA English
DT Article
AB A 58-year-old woman underwent outpatient colonoscopy with multiple cold forceps biopsy for evaluation of a presumptive diagnosis of ulcerative colitis. Six hours following the procedure, she developed subcutaneous crepitus and presented to the emergency department, where chest X-ray revealed pneumomediastinum and subcutaneous emphysema. Our case discusses this unusual complication of colonoscopy and its diagnosis and management.
C1 [Loughlin, Michael T.; Duncan, Timothy J.] Wright Patterson Med Ctr, Dept Internal Med, Wright Patterson AFB, OH 45433 USA.
RP Loughlin, MT (reprint author), Wright Patterson Med Ctr, Dept Internal Med, 88MDOS SGOMIA,4881 Sugar Maple Dr, Wright Patterson AFB, OH 45433 USA.
NR 8
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 APR
PY 2012
VL 177
IS 4
BP 474
EP 476
PG 3
WC Medicine, General & Internal
SC General & Internal Medicine
GA 921BF
UT WOS:000302452300023
PM 22594142
ER

PT J
AU Riojas, RA
   Bahr, BA
   Thomas, DB
   Perciballi, J
   Noyes, L
AF Riojas, Ramon A.
   Bahr, Brady A.
   Thomas, David B.
   Perciballi, John
   Noyes, Lachland
TI A Case Report of Lymphangioleiomyomatosis Presenting as Spontaneous
   Pneumothorax
SO MILITARY MEDICINE
LA English
DT Article
ID CYSTIC LUNG-DISEASE; HIGH-RESOLUTION CT; PULMONARY
   LYMPHANGIOLEIOMYOMATOSIS; TUBEROUS SCLEROSIS; PLEURAL ABRASION; GENE
   TSC2; LYMPHANGIOMYOMATOSIS; TRANSPLANTATION; MANAGEMENT; MUTATIONS
AB Spontaneous pneumothorax is a commonly encountered problem in the Emergency Department. Patients are often treated without further investigation for an underlying etiology. We present a patient who was unable to completely resolve a pneumothorax and was found to have lymphangioleiomyomatosis (LAM), a rare cystic lung disease. In the past. LAM was difficult to diagnose and had a mortality of 100% after 10 years, but now there is a 71% survival after 10 years. Recent research has led to increased characterization of the pathology and radiographic findings. This article briefly presents the case and discusses the etiology, diagnosis, and treatment of LAM.
C1 [Riojas, Ramon A.; Bahr, Brady A.; Thomas, David B.] 81st Med Grp, Keesler AFB, MS 39534 USA.
   [Perciballi, John] Vet Affairs Clin Pensacola, Joint Ambulatory Care Clin, Pensacola, FL 32507 USA.
   [Noyes, Lachland] USN, Hosp Pensacola, Pensacola, FL 32512 USA.
RP Riojas, RA (reprint author), 81st Med Grp, 301 Fisher St, Keesler AFB, MS 39534 USA.
FU Naval Hospital Pensacola
FX The authors wish to acknowledge the support of the staff at Naval
   Hospital Pensacola.
NR 33
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U1 0
U2 1
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 APR
PY 2012
VL 177
IS 4
BP 477
EP 480
PG 4
WC Medicine, General & Internal
SC General & Internal Medicine
GA 921BF
UT WOS:000302452300024
PM 22594143
ER

PT J
AU Near, R
   Tabor, C
   Duan, JS
   Pachter, R
   El-Sayed, M
AF Near, Rachel
   Tabor, Christopher
   Duan, Jinsong
   Pachter, Ruth
   El-Sayed, Mostafa
TI Pronounced Effects of Anisotropy on Plasmonic Properties of Nanorings
   Fabricated by Electron Beam Lithography
SO NANO LETTERS
LA English
DT Article
DE Nanorings; discrete dipole approximation; finite-difference time-domain;
   electron beam lithography; fano; anisotropy
ID ENHANCED RAMAN-SCATTERING; DISCRETE-DIPOLE APPROXIMATION; HOLLOW GOLD
   NANOPARTICLES; OPTICAL-PROPERTIES; METAL NANOSTRUCTURES; FANO
   RESONANCES; IN-VIVO; ABSORPTION; SILVER; SIZE
AB Gold nanoring dimers were fabricated via EBL with dimensions of 127.6 +/- 2.5 and 57.8 +/- 2.3 nm for the outer and inner diameters, respectively, with interparticle separations ranging from 17.8 +/- 3.4 to 239.2 +/- 3.7 nm. The coupling between the inner and outer surfaces of a single nanoring renders it very sensitive to any anisotropy. We found that anisotropy in the particle geometry and anisotropy introduced by the substrate combine to create very unique spectral features in this system.
C1 [Near, Rachel; El-Sayed, Mostafa] Georgia Inst Technol, Sch Chem & Biochem, Atlanta, GA 30332 USA.
   [Tabor, Christopher; Duan, Jinsong; Pachter, Ruth] USAF, Res Lab, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA.
   [Duan, Jinsong] Gen Dynam Informat Technol, Dayton, OH 45431 USA.
RP El-Sayed, M (reprint author), Georgia Inst Technol, Sch Chem & Biochem, 901 Atlantic Dr, Atlanta, GA 30332 USA.
EM melsayed@gatech.edu
FU AFOSR Center of Excellence on BIONIC [FA9550-09-1-0162]; AFRL/RX
FX This work was supported by the AFOSR Center of Excellence on BIONIC
   under Grant FA9550-09-1-0162 and AFRL/RX. We thank Erik Dreaden for his
   helpful insights. We thank Steven Hayden for his careful review of this
   manuscript.
NR 59
TC 49
Z9 50
U1 3
U2 48
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1530-6984
EI 1530-6992
J9 NANO LETT
JI Nano Lett.
PD APR
PY 2012
VL 12
IS 4
BP 2158
EP 2164
DI 10.1021/nl300622p
PG 7
WC Chemistry, Multidisciplinary; Chemistry, Physical; Nanoscience &
   Nanotechnology; Materials Science, Multidisciplinary; Physics, Applied;
   Physics, Condensed Matter
SC Chemistry; Science & Technology - Other Topics; Materials Science;
   Physics
GA 922CO
UT WOS:000302524600070
PM 22448778
ER

PT J
AU Zhang, BG
   Li, YJ
   Liu, R
   Pritchett, TM
   Azenkeng, A
   Ugrinov, A
   Haley, JE
   Li, ZJ
   Hoffmann, MR
   Sun, WF
AF Zhang, Bingguang
   Li, Yunjing
   Liu, Rui
   Pritchett, Timothy M.
   Azenkeng, Alexander
   Ugrinov, Angel
   Haley, Joy E.
   Li, Zhongjing
   Hoffmann, Mark R.
   Sun, Wenfang
TI Synthesis, Structural Characterization, Photophysics, and Broadband
   Nonlinear Absorption of a Platinum(II) Complex with the
   6-(7-Benzothiazol-2'-yl-9,9-diethyl-9?H-fluoren-2-yl)-2,2'-bipyridinyl
   Ligand
SO CHEMISTRY-A EUROPEAN JOURNAL
LA English
DT Article
DE luminescence; nonlinear optics; photophysics; platinum; two-photon
   absorption
ID EXCITED-STATE ABSORPTION; DENSITY-FUNCTIONAL THEORY; EFFECTIVE CORE
   POTENTIALS; MOLECULAR PHOTOCHEMICAL DEVICE; PHOTOINDUCED CHARGE
   SEPARATION; REVERSE SATURABLE ABSORPTION; LIGHT-EMITTING MATERIALS;
   2-PHOTON ABSORPTION; BASIS-SET; PHENYLACETYLIDE COMPLEXES
AB A platinum complex with the 6-(7-benzothiazol-2'-yl-9,9-diethyl-9H-fluoren-2-yl)-2,2'-bipyridinyl ligand (1) was synthesized and the crystal structure was determined. UV/Vis absorption, emission, and transient difference absorption of 1 were systematically investigated. DFT calculations were carried out on 1 to characterize the electronic ground state and aid in the understanding of the nature of low-lying excited electronic states. Complex 1 exhibits intense structured 1pp* absorption at ?abs<440 nm, and a broad, moderate 1MLCT/1LLCT transition at 440520 nm in CH2Cl2 solution. A structured 3pp*/3MLCT emission at about 590 nm was observed at room temperature and at 77 K. Complex 1 exhibits both singlet and triplet excited-state absorption from 450 nm to 750 nm, which are tentatively attributed to the 1pp* and 3pp* excited states of the 6-(7-benzothiazol-2'-yl-9,9-diethyl-9H-fluoren-2-yl)-2,2'-bipyridine ligand, respectively. Z-scan experiments were conducted by using ns and ps pulses at 532 nm, and ps pulses at a variety of visible and near-IR wavelengths. The experimental data were fitted by a five-level model by using the excited-state parameters obtained from the photophysical study to deduce the effective singlet and triplet excited-state absorption cross sections in the visible spectral region and the effective two-photon absorption cross sections in the near-IR region. Our results demonstrate that 1 possesses large ratios of excited-state absorption cross sections relative to that of the ground-state in the visible spectral region; this results in a remarkable degree of reverse saturable absorption from 1 in CH2Cl2 solution illuminated by ns laser pulses at 532 nm. The two-photon absorption cross sections in the near-IR region for 1 are among the largest values reported for platinum complexes. Therefore, 1 is an excellent, broadband, nonlinear absorbing material that exhibits strong reverse saturable absorption in the visible spectral region and large two-photon-assisted excited-state absorption in the near-IR region.
C1 [Zhang, Bingguang; Li, Yunjing; Liu, Rui; Ugrinov, Angel; Li, Zhongjing; Sun, Wenfang] N Dakota State Univ, Dept Chem & Biochem, Fargo, ND 58108 USA.
   [Pritchett, Timothy M.] US Army, Res Lab, AMSRD SE EM, Adelphi, MD 20783 USA.
   [Azenkeng, Alexander] Univ N Dakota, Energy & Environm Res Ctr, Grand Forks, ND 58202 USA.
   [Haley, Joy E.] USAF, Mat & Mfg Directorate, Res Lab, Wright Patterson AFB, OH 45433 USA.
   [Hoffmann, Mark R.] Univ N Dakota, Dept Chem, Grand Forks, ND 58202 USA.
RP Sun, WF (reprint author), N Dakota State Univ, Dept Chem & Biochem, Fargo, ND 58108 USA.
EM Wenfang.Sun@ndsu.edu
RI Liu, Rui/G-3772-2014; li, zhongjing/H-4945-2014
OI li, zhongjing/0000-0002-0125-9693
FU National Science Foundation [CHE-0449598, CHEM-0946990]; Army Research
   Laboratory [W911NF-06-2-0032]
FX This work is supported by National Science Foundation (CAREER
   CHE-0449598 and CHEM-0946990) and the Army Research Laboratory
   (W911NF-06-2-0032).
NR 98
TC 19
Z9 19
U1 1
U2 30
PU WILEY-V C H VERLAG GMBH
PI WEINHEIM
PA BOSCHSTRASSE 12, D-69469 WEINHEIM, GERMANY
SN 0947-6539
J9 CHEM-EUR J
JI Chem.-Eur. J.
PD APR
PY 2012
VL 18
IS 15
BP 4593
EP 4606
DI 10.1002/chem.201103095
PG 14
WC Chemistry, Multidisciplinary
SC Chemistry
GA 917HC
UT WOS:000302162500020
PM 22407839
ER

PT J
AU Luckarift, HR
   Ivnitski, DM
   Lau, C
   Khripin, C
   Atanassov, P
   Johnson, GR
AF Luckarift, Heather R.
   Ivnitski, Dmitri M.
   Lau, Carolin
   Khripin, Constantine
   Atanassov, Plamen
   Johnson, Glenn R.
TI Gold-Decorated Carbon Composite Electrodes for Enzymatic Oxygen
   Reduction
SO ELECTROANALYSIS
LA English
DT Article
DE Laccase; Colloidal gold particles; Carbon black; Oxygen reduction;
   Enzyme immobilization
ID TRAMETES-HIRSUTA LACCASE; BIOFUEL CELLS; REDOX PROTEINS; VERSICOLOR;
   BIOSENSOR; SITES; T1
AB Functional composites of carbon and gold nanoparticles create a hierarchical architecture that facilitates high enzyme loading. Subsequent immobilization of the multicopper oxidase, Trametes versciolor laccase, was optimal with dithiobis- (succinimidyl propionate), due to the formation of thiol bonds between the protein molecules and gold. The immobilized laccase catalyzed oxygen reduction, with an onset potential of similar to 0.6 V (vs. Ag/AgCl), indicated effective orientation of the enzyme redox center to enable direct electron transport between enzyme and the composite electrode. Current densities in half-cell configurations provide scalable outputs of 50-80 mu A/cm(2) with the optimized electrode design. The methodology herein describes a rapid, facile preparation of gold-decorated carbon composite materials for use as electrode scaffolds that can be integrated into a range of bioelectronic devices.
C1 [Luckarift, Heather R.; Johnson, Glenn R.] USAF, Res Lab, AFRL RXQL, Tyndall AFB, FL 32403 USA.
   [Luckarift, Heather R.] Universal Technol Corp, Dayton, OH 45432 USA.
   [Ivnitski, Dmitri M.; Lau, Carolin; Khripin, Constantine; Atanassov, Plamen] Univ New Mexico, Ctr Emerging Energy Technol, Albuquerque, NM 87131 USA.
   [Ivnitski, Dmitri M.; Lau, Carolin; Khripin, Constantine; Atanassov, Plamen] Univ New Mexico, Dept Chem & Nucl Engn, Albuquerque, NM 87131 USA.
RP Luckarift, HR (reprint author), USAF, Res Lab, AFRL RXQL, Tyndall AFB, FL 32403 USA.
EM heather.luckarift.ctr.gb@us.af.mil; glenn.johnson.8@us.af.mil
RI Atanassov, Plamen/G-4616-2011
FU AFOSR MURI on Fundamentals and Bioengineering of Enzymatic Fuel Cells
   (UNM);  [MR 2D100]
FX This work was supported by a grant from MR 2D100 Bio/Nano Architectures
   and in part by AFOSR MURI on Fundamentals and Bioengineering of
   Enzymatic Fuel Cells (UNM). Support for AFRL work was provided by the
   Air Force Office of Scientific Research and the AFRL Materials and
   Manufacturing Directorate. The authors also thank Bob Nichols for design
   and fabrication of the electrochemical cells and modified electrodes for
   electrochemistry experiments.
NR 31
TC 8
Z9 8
U1 2
U2 22
PU WILEY-V C H VERLAG GMBH
PI WEINHEIM
PA PO BOX 10 11 61, D-69451 WEINHEIM, GERMANY
SN 1040-0397
J9 ELECTROANAL
JI Electroanalysis
PD APR
PY 2012
VL 24
IS 4
SI SI
BP 931
EP 937
DI 10.1002/elan.201100677
PG 7
WC Chemistry, Analytical; Electrochemistry
SC Chemistry; Electrochemistry
GA 917GF
UT WOS:000302160000028
ER

PT J
AU Shanmugam, V
   Penmetsa, R
   Tuegel, E
AF Shanmugam, V.
   Penmetsa, R.
   Tuegel, E.
TI Calibration of a probabilistic cohesive zone model for generating a
   fracture nomograph
SO FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES
LA English
DT Article
DE cohesive zone model; traction-separation law; FEA; response surface;
   optimisation; nomograph
ID DUCTILE CRACK-GROWTH; VARIABLES; FAILURE
AB In the recent years, Cohesive Zone Models (CZMs) have gained increasing popularity for modelling the fracture process [1] and also in other applications like composite de-lamination [2] solder failures [3] in circuits, etc. This can be attributed to the ability of the CZM to adapt to the nonlinearities in the process it represents by adjusting the model parameters. These parameters that are selected to represent the material behaviour in the vicinity of the crack or a damage zone are non-deterministic in nature resulting in random fracture strength estimates. Currently, there are no standardized tests for measuring the CZM parameters and their random scatter. Numerous researchers in the literature suggest values for the CZM parameters based on their experience from limited test data. Traditionally, fracture toughness is determined through coupon tests for any material system that is being analysed using Linear Elastic Fracture Mechanics to determine the fracture strength of a specimen. Since data for fracture toughness are available, this research is aimed at determining the probability density functions (PDFs) for the cohesive zone parameters that would give the same scatter in fracture strength as that obtained from the test statistics. Correlations between the model parameters were introduced to improve the accuracy of the fracture strength PDF. A finite width cracked plate was selected as a test case to demonstrate the process. This paper also presents evidence that material scatter can be isolated from the geometric effects to determine a normalized PDF of fracture strength for a given material. This normalized PDF can then be scaled, using mean fracture strength, to any crack configuration to develop a nomograph that can be used to rapidly assess risk without the need for a probabilistic fracture analysis.
C1 [Shanmugam, V.] Wright State Univ, Dept Mech & Mat Engn, Dayton, OH 45435 USA.
   [Penmetsa, R.; Tuegel, E.] USAF, Res Lab, Air Vehicles Directorate RBSM, Wright Patterson AFB, OH 45433 USA.
RP Shanmugam, V (reprint author), Wright State Univ, Dept Mech & Mat Engn, Dayton, OH 45435 USA.
EM shanmugam.5@wright.edu
FU Mid West Structural Sciences Center (MSSC); U.S. Air Force Research
   Laboratory Air Vehicles Directorate [FA8650-06-2-3620]; Dayton Area
   Graduate Studies Institute
FX The first and second authors would like to greatly acknowledge the
   financial support of the Mid West Structural Sciences Center (MSSC).
   MSSC is supported by the U.S. Air Force Research Laboratory Air Vehicles
   Directorate under the contract number FA8650-06-2-3620. Support for the
   graduate student is provided by the Dayton Area Graduate Studies
   Institute. This document is approved for public release
   (AFRL-88ABW-2010-1255).
NR 31
TC 1
Z9 1
U1 2
U2 5
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 8756-758X
EI 1460-2695
J9 FATIGUE FRACT ENG M
JI Fatigue Fract. Eng. Mater. Struct.
PD APR
PY 2012
VL 35
IS 4
BP 328
EP 346
DI 10.1111/j.1460-2695.2011.01624.x
PG 19
WC Engineering, Mechanical; Materials Science, Multidisciplinary
SC Engineering; Materials Science
GA 908ZO
UT WOS:000301531800004
ER

PT J
AU Woodall, CW
   Perry, CH
   Westfall, JA
AF Woodall, Christopher W.
   Perry, Charles H.
   Westfall, James A.
TI An empirical assessment of forest floor carbon stock components across
   the United States
SO FOREST ECOLOGY AND MANAGEMENT
LA English
DT Article
DE Carbon; Litter; Humus; Forest floor; Greenhouse gas inventory; Fine
   woody debris
ID WOODY MATERIAL; SOIL; INVENTORY; MINNESOTA; STORAGE; USA
AB Despite its prevalent reporting in regional/national greenhouse gas inventories (NGHGI), forest floor (FF) carbon (C) stocks (including litter, humus, and fine woody debris [FWD]) have not been empirically measured using a consistent approach across forests of the US. The goal of this study was to use the first national field inventory of litter and humic layer depths, along with FWD volumes, to assess their basic attributes (e.g., depths/volumes) and refine NGHGI approaches to FF C stock monitoring. Results suggest that FF C stocks are present in nearly 99% of US forests with a median estimate of 25.6 Mg/ha, albeit with tremendous spatial variation in litter/humic depths and FWD volumes. Relative to aboveground live tree biomass C stocks, which typically range from 20 to 200 Mg/ha, nearly a quarter of US forests have minor FF C stocks (<14 Mg/ha), while approximately 10% of US forests may have substantial FF C stocks (>93 Mg/ha). Conditions conducive to large FF C stocks may be stochastic disturbance events that result in high volumes of FWD and/or climatic/physiographic conditions that slow decomposition (e.g., peatland ecosystems found in northern or coastal forest ecosystems). As soil and dead wood field inventories may only sample litter/humic depths and FWD counts by diameter class, C stock estimation procedures are heavily reliant on estimation constants (e.g., bulk/wood density). It was found that the variability in estimation constants may have a much stronger effect on resulting FF C stock estimates than the field measurements (e.g., litter layer depths) themselves. The monitoring of FF C stocks, along with the maintenance of site productivity and associated ecosystem services, would benefit from refined sample protocols in ecosystems with deep humic layers and coupling field data with lab analysis of bulk/wood density and C content from soil sampling programs. Published by Elsevier B.V.
C1 [Woodall, Christopher W.; Perry, Charles H.] US Forest Serv, USDA, No Res Stn, Forest Inventory & Anal Program, St Paul, MN 55108 USA.
   [Westfall, James A.] USAF, USDA, No Res Stn, Forest Inventory & Anal Program, Newtown Sq, PA USA.
RP Woodall, CW (reprint author), US Forest Serv, USDA, No Res Stn, Forest Inventory & Anal Program, St Paul, MN 55108 USA.
EM cwoodall@fs.fed.us
OI Woodall, Christopher/0000-0001-8076-6214; Perry,
   Charles/0000-0001-9377-5996
NR 40
TC 13
Z9 13
U1 2
U2 20
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0378-1127
J9 FOREST ECOL MANAG
JI For. Ecol. Manage.
PD APR 1
PY 2012
VL 269
BP 1
EP 9
DI 10.1016/j.foreco.2011.12.041
PG 9
WC Forestry
SC Forestry
GA 912NQ
UT WOS:000301807300001
ER

PT J
AU Kaspi, R
   Tilton, ML
   Dente, GC
   Chavez, JR
   Ongstad, AP
AF Kaspi, Ron
   Tilton, Michael L.
   Dente, Gregory C.
   Chavez, Joseph R.
   Ongstad, Andrew P.
TI Ultralow Beam Divergence and Increased Lateral Brightness in Optically
   Pumped Midinfrared Laser
SO IEEE PHOTONICS TECHNOLOGY LETTERS
LA English
DT Article
DE Antimonide laser; low beam divergence; midinfrared laser; optically
   pumped laser; type-II quantum wells
AB An optically pumped edge-emitting semiconductor laser emitting near 4.1 mu m was designed with weak transverse mode confinement resulting in an exceptionally large transverse optical mode size. Consequently, a laser device is reported that exhibits a fast-axis divergence angle of similar to 4.2 degrees full-width at half-maximum (FWHM). More notably, a large reduction of the lateral axis divergence is also observed as a result of the increased lateral coherency. The reduced confinement factor and differential gain serves to suppress lateral filamentation. Despite the higher threshold and lower power, a lateral divergence angle of similar to 3.2 degrees FWHM and increased lateral brightness is achieved.
C1 [Kaspi, Ron; Tilton, Michael L.; Dente, Gregory C.; Chavez, Joseph R.; Ongstad, Andrew P.] USAF, Res Lab, Albuquerque, NM 87117 USA.
RP Kaspi, R (reprint author), USAF, Res Lab, Albuquerque, NM 87117 USA.
EM Ron.Kaspi@kirtland.af.mil; michael.tilton@kirtland.af.mil;
   gcdente@gmail.com; joseph.chavez2@kirtland.af.mil;
   andrew.ongstad@kirtland.af.mil
FU Air Force Office of Scientific Research
FX This work was supported in part by the Air Force Office of Scientific
   Research.
NR 5
TC 1
Z9 1
U1 4
U2 9
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 1041-1135
J9 IEEE PHOTONIC TECH L
JI IEEE Photonics Technol. Lett.
PD APR 1
PY 2012
VL 24
IS 7
BP 599
EP 601
DI 10.1109/LPT.2012.2184279
PG 3
WC Engineering, Electrical & Electronic; Optics; Physics, Applied
SC Engineering; Optics; Physics
GA 916FV
UT WOS:000302085900004
ER

PT J
AU Lowery, WJ
   Leath, CA
   Robinson, RD
AF Lowery, William J.
   Leath, Charles A.
   Robinson, Randal D.
TI Robotic surgery applications in the management of gynecologic
   malignancies
SO JOURNAL OF SURGICAL ONCOLOGY
LA English
DT Review
DE gynecologic cancer; robotic surgery; laparoscopy; surgical techniques
ID INVASIVE CERVICAL-CANCER; VAGINAL CUFF DEHISCENCE; RADICAL HYSTERECTOMY;
   PELVIC LYMPHADENECTOMY; ENDOMETRIAL CANCER; LAPAROSCOPIC HYSTERECTOMY;
   SURGICAL ROBOTICS; CARCINOMA; TRACHELECTOMY; FERTILITY
AB This review evaluates the use of robotic-assisted laparoscopic surgery in the treatment of gynecologic malignancies and objectively evaluates the use of these systems in performing radical hysterectomies and surgical staging of gynecologic malignancies. The review focuses on surgical length, blood loss, complications, recovery time, and adequacy of surgical staging of robotic-assisted surgery compared to abdominal and non-robotically assisted laparoscopic surgery for malignancies.
C1 [Robinson, Randal D.] Univ Texas Hlth Sci Ctr San Antonio, Div Reprod Endocrinol & Infertil, Dept Obstet & Gynecol, San Antonio Mil Med Ctr, San Antonio, TX 78229 USA.
   [Lowery, William J.; Leath, Charles A.] San Antonio Mil Med Ctr, Div Gynecol Oncol, Dept Obstet & Gynecol, San Antonio, TX USA.
   [Lowery, William J.; Leath, Charles A.; Robinson, Randal D.] Brooke Army Med Ctr, Ft Sam Houston, TX 78234 USA.
   [Lowery, William J.; Leath, Charles A.; Robinson, Randal D.] Wilford Hall USAF Med Ctr, Lackland AFB, TX 78236 USA.
RP Robinson, RD (reprint author), Univ Texas Hlth Sci Ctr San Antonio, Div Reprod Endocrinol & Infertil, Dept Obstet & Gynecol, San Antonio Mil Med Ctr, 7703 Floyd Curl Dr,MSC 7836, San Antonio, TX 78229 USA.
EM robinsonr3@uthscsa.edu
OI Leath III, Charles/0000-0002-4034-6845
NR 57
TC 11
Z9 12
U1 0
U2 1
PU WILEY-BLACKWELL
PI MALDEN
PA COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA
SN 0022-4790
J9 J SURG ONCOL
JI J. Surg. Oncol.
PD APR
PY 2012
VL 105
IS 5
SI SI
BP 481
EP 487
DI 10.1002/jso.22080
PG 7
WC Oncology; Surgery
SC Oncology; Surgery
GA 914EA
UT WOS:000301930700008
PM 22441900
ER

PT J
AU Phillips, PL
   Brockman, RA
   John, R
AF Phillips, P. L.
   Brockman, R. A.
   John, R.
TI Modelling Strategies for Property Identification Based on Full-Field
   Surface Displacement Data
SO STRAIN
LA English
DT Article
DE deformation mapping; digital image correlation; full-field measurements;
   property identification
ID DIGITAL-IMAGE-CORRELATION; STRESS-STRAIN FIELDS; MICROSTRUCTURE;
   OPTIMIZATION; PLASTICITY; PARAMETERS; ALUMINUM
AB The use of full-field displacement measurements in mechanical testing provides detailed response information that can be used, in conjunction with modelling and optimisation, for precise material property identification. One limitation of this technique is that the collection of response data and the sectioning of a specimen to reveal the material microstructure are both destructive tests and mutually exclusive, as the displacement measurement occurs only on the exposed surface. Therefore, modelling of an experiment to interpret a full-field experiment requires assumptions about the structure of the material below the visible surface. This study evaluates the effects of several possible modelling assumptions on the errors in model-predicted response and on the resulting material property estimates. A 3-D microstructural model, for which the subsurface grain geometry and orientations are known, provides the basis for comparison of several common modelling assumptions based on the grain geometry and orientations on the visible surface of a specimen.
C1 [Phillips, P. L.; Brockman, R. A.] Univ Dayton, Res Inst, Dayton, OH 45409 USA.
   [John, R.] USAF, Res Lab, Mat & Mfg Directorate, AFRL RXLMN, Wright Patterson AFB, OH 45433 USA.
RP Phillips, PL (reprint author), Univ Dayton, Res Inst, 300 Coll Pk Ave, Dayton, OH 45409 USA.
FU Air Force Office of Scientific Research (AFOSR) [2306-6M2AL8]; Air Force
   Research Laboratory (AFRL/RXLMN); Wright-Patterson Air Force Base [OH
   45433-7817, F8650-09-C-5223]
FX This research was conducted at the Materials and Manufacturing
   Directorate, Air Force Research Laboratory (AFRL/RXLMN),
   Wright-Patterson Air Force Base, OH 45433-7817 under onsite contract
   number F8650-09-C-5223. The authors gratefully acknowledge the partial
   support of the Air Force Office of Scientific Research (AFOSR Program
   Manager: Dr. David Stargel) under Task No. 2306-6M2AL8. Microstructural
   geometry data were graciously provided by Mr. Michael Veillieux and Dr.
   Anthony Ingraffea of Cornell University, and Dr. Anthony Rollett of
   Carnegie-Mellon University. Prof. M.J.D. Powell of Cambridge University
   kindly provided software for the bound-constrained optimisation
   algorithm. We also wish to acknowledge the reviewers of the manuscript,
   who offered several excellent suggestions for improving the
   presentation.
NR 38
TC 1
Z9 1
U1 0
U2 0
PU WILEY-BLACKWELL
PI MALDEN
PA COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA
SN 0039-2103
J9 STRAIN
JI Strain
PD APR
PY 2012
VL 48
IS 2
BP 143
EP 152
DI 10.1111/j.1475-1305.2011.00806.x
PG 10
WC Materials Science, Characterization & Testing
SC Materials Science
GA 912EJ
UT WOS:000301777200005
ER

PT J
AU Roane, BM
   Dolan, DC
   Bramoweth, AD
   Rosenthal, L
   Taylor, DJ
AF Roane, Brandy M.
   Dolan, Diana C.
   Bramoweth, Adam D.
   Rosenthal, Leon
   Taylor, Daniel J.
TI Altering Unhelpful Beliefs About Sleep with Behavioral and Cognitive
   Therapies
SO COGNITIVE THERAPY AND RESEARCH
LA English
DT Article
DE Insomnia; DBAS; Unhelpful beliefs; Cognitive therapy; Behavior therapy;
   CBTi
ID CLINICAL CASE SERIES; DYSFUNCTIONAL BELIEFS; INSOMNIA; METAANALYSIS;
   PHARMACOTHERAPY; ATTITUDES; CRITERIA; UPDATE; TRIAL
AB Multi-component treatment of insomnia is widely practiced; although, the additive benefit of a cognitive therapy component to specifically target unhelpful beliefs about sleep has not been conclusively determined. A chart review study at a sleep medicine clinic of 45 insomnia patients evaluated scores on the Dysfunctional Beliefs and Attitudes Scale (DBAS-16) before, during, and after cognitive behavioral therapy for insomnia (CBTi). Treatment followed standard practice, which consisted of behavioral therapy approaches during the first half of treatment and cognitive therapy during the latter portion. DBAS-16 scores improved significantly after behavioral treatment, t(44) = 6.02, P < .001, d = .9, and improved significantly again after the cognitive component of treatment, t(19) = 7.11, P < .001, d = 1.59. A comparison of the change scores, however, demonstrated no significant difference in the effects of behavioral and cognitive therapies, t(19) = 5.1, P < .562, d = .17, which suggests that cognitive therapy did not produce a greater change compared to behavioral components. Analysis of the DBAS-16 individual items suggests that the two treatment components-behavioral and cognitive therapies-may affect unhelpful beliefs about sleep differently. These findings support the need for future research to explore the effectiveness of selecting insomnia treatment components based on individual presentation.
C1 [Taylor, Daniel J.] Univ N Texas, Dept Psychol, Denton, TX 76203 USA.
   [Rosenthal, Leon] Sleep Med Associates Texas PA, Dallas, TX USA.
   [Bramoweth, Adam D.] VA Pittsburgh Healthcare Syst, Pittsburgh, PA USA.
   [Dolan, Diana C.] Wilford Hall USAF Med Ctr, Lackland AFB, TX USA.
   [Roane, Brandy M.] Brown Univ, Sleep Sci Res Lab, Providence, RI 02912 USA.
   [Roane, Brandy M.] Brown Univ, Dept Psychiat & Human Behav, Alpert Med Sch, Providence, RI 02912 USA.
RP Taylor, DJ (reprint author), Univ N Texas, Dept Psychol, 1155 Union Circle 311280, Denton, TX 76203 USA.
EM Daniel.Taylor@unt.edu
OI Bramoweth, Adam/0000-0002-3535-0292
NR 17
TC 2
Z9 2
U1 1
U2 8
PU SPRINGER/PLENUM PUBLISHERS
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 0147-5916
J9 COGNITIVE THER RES
JI Cogn. Ther. Res.
PD APR
PY 2012
VL 36
IS 2
SI SI
BP 129
EP 133
DI 10.1007/s10608-011-9417-4
PG 5
WC Psychology, Clinical
SC Psychology
GA 919GR
UT WOS:000302311400003
ER

PT J
AU Arthur, W
   Glaze, RM
   Bhupatkar, A
   Villado, AJ
   Bennett, W
   Rowe, LJ
AF Arthur, Winfred, Jr.
   Glaze, Ryan M.
   Bhupatkar, Alok
   Villado, Anton J.
   Bennett, Winston, Jr.
   Rowe, Leah J.
TI Team Task Analysis: Differentiating Between Tasks Using Team Relatedness
   and Team Workflow as Metrics of Team Task Interdependence
SO HUMAN FACTORS
LA English
DT Article
DE team task analysis; team relatedness; team workflow; team
   interdependence; task interdependence; team-based jobs; teams
ID RATING ACCURACY; MENTAL MODELS; PERFORMANCE; METAANALYSIS; INFORMATION;
   JUDGMENT; CONTEXT; SKILL
AB Objective: As a constructive replication and extension of Arthur, Edwards, Bell, Villado, and Bennett (2005), the objective of the current study was to further investigate the efficacy of team relatedness and team workflow ratings (along with their composite) as metrics of interdependence.
   Background: Although an analysis of task and job interdependence has important implications and uses in domains such as job design, selection, and training, the job analysis literature has been slow to develop an effective method to identify team-based tasks and jobs.
   Method: To achieve the study's objectives, 140 F-16 fighter pilots (35 four-person teams) rated 34 task and activity statements in terms of their team relatedness and team workflow.
   Results: The results indicated that team relatedness and team workflow effectively differentiated between tasks with varying levels of interdependency (as identified by instructor pilots who served as subject matter experts) within the same job. In addition, teams that accurately perceived the level of interdependency performed better on a four-ship F-16 flight-training program than those that did not.
   Conclusion: Team relatedness and team workflow ratings can effectively differentiate between tasks with varying levels of interdependency.
   Application: Like traditional individual task or job analysis, this information can serve as the basis for specified human resource functions and interventions, and as diagnostic indicators as well.
C1 [Arthur, Winfred, Jr.] Texas A&M Univ, Dept Psychol, College Stn, TX 77843 USA.
   [Bennett, Winston, Jr.] USAF, Res Lab, Human Effectiveness Directorate, Dayton, OH USA.
   [Rowe, Leah J.] L3 Commun, Dayton, OH USA.
RP Arthur, W (reprint author), Texas A&M Univ, Dept Psychol, College Stn, TX 77843 USA.
EM w-arthur@neo.tamu.edu
NR 40
TC 2
Z9 2
U1 7
U2 20
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 APR
PY 2012
VL 54
IS 2
BP 277
EP 295
DI 10.1177/0018720811435234
PG 19
WC Behavioral Sciences; Engineering, Industrial; Ergonomics; Psychology,
   Applied; Psychology
SC Behavioral Sciences; Engineering; Psychology
GA 915FJ
UT WOS:000302009200010
PM 22624293
ER

PT J
AU Patterson, RE
AF Patterson, Robert Earl
TI Cognitive engineering, cognitive augmentation, and information display
SO JOURNAL OF THE SOCIETY FOR INFORMATION DISPLAY
LA English
DT Article
DE Cognitive engineering; cognitive augmentation; human cognition
ID WORKING-MEMORY; TERM-MEMORY; ATTENTION; CAPACITY; RECOGNITION; LOOKING;
   SCENE
AB From a perspective of cognitive engineering, this paper presents eight principles of good display design based on human cognition: (1) displays that divide attention will increase the cognitive load on working memory; (2) displays that continuously present the same information may compensate for the decay of short-term memory; (3) displays that assist the viewer in mentally chunking information will decrease the cognitive load on working memory; (4) displays that present icons or images to direct attention to important visual stimuli will likely minimize inattentional blindness; (5) displays that help minimize attentional distractions and help focus attention on a given task will minimize the burden on working memory; (6) displays that present cues composed of strong singletons will capture and engage exogenous attention; (7) displays that help the viewer make a mental connection between an analogue and a target will assist in the induction of analogical reasoning; (8) displays that present over time multiple exposures consisting of statistical regularities may promote implicit learning and expertise development. Thus, information displays of the future can systematically engage high-level human cognitive processes for purposes of improving human performance on a variety of tasks found in education, the military, and many other applications.
C1 USAF, Res Lab, Dayton, OH 45433 USA.
RP Patterson, RE (reprint author), USAF, Res Lab, RHA 711 HPW, Dayton, OH 45433 USA.
EM Robert.Patterson@wpafb.af.mil
NR 42
TC 3
Z9 3
U1 1
U2 10
PU SOC INFORMATION DISPLAY
PI CAMPBELL
PA 1475 S BASCOM AVE, STE 114, CAMPBELL, CA 95008 USA
SN 1071-0922
J9 J SOC INF DISPLAY
JI J. Soc. Inf. Disp.
PD APR
PY 2012
VL 20
IS 4
BP 208
EP 213
DI 10.1889/JSID20.4.208
PG 6
WC Engineering, Electrical & Electronic; Materials Science,
   Multidisciplinary; Optics; Physics, Applied
SC Engineering; Materials Science; Optics; Physics
GA 914CN
UT WOS:000301926400005
ER

PT J
AU Tucker, JC
   Chan, LH
   Rohrer, GS
   Groeber, MA
   Rollett, AD
AF Tucker, Joseph C.
   Chan, Lisa H.
   Rohrer, Gregory S.
   Groeber, Michael A.
   Rollett, Anthony D.
TI Comparison of grain size distributions in a Ni-based superalloy in three
   and two dimensions using the Saltykov method
SO SCRIPTA MATERIALIA
LA English
DT Article
DE Grain size distribution; Fatigue; Microstructure; Twinning; Superalloy
ID POLYCRYSTALLINE MICRO STRUCTURES; 3-DIMENSIONAL ANALYSIS;
   AUTOMATED-ANALYSIS; CRACK NUCLEATION; SIMULATION; FRAMEWORK; FATIGUE
AB A three-dimensional (3-D) dataset of Ni-based superalloy Inconel 100 is used as a validation case for using stereology to estimate 3-D grain sizes from 2-D data. 2-D sections of the IN 100 dataset are extracted, from which 3-D size distributions are estimated through the use of the Saltykov method and compared to the true 3-D statistics. The Saltykov method corrected the upper tail disparity between the 2-D and 3-D grain size distributions, but the lower tail of the distribution was not improved. (C) 2012 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
C1 [Tucker, Joseph C.; Rohrer, Gregory S.; Rollett, Anthony D.] Carnegie Mellon Univ, Pittsburgh, PA 15213 USA.
   [Chan, Lisa H.] EDAX, New York, NY USA.
   [Groeber, Michael A.] USAF, Res Lab, Dayton, OH USA.
RP Tucker, JC (reprint author), Carnegie Mellon Univ, Pittsburgh, PA 15213 USA.
EM josephtu@andrew.cmu.edu
RI Rollett, Anthony/A-4096-2012; Tucker, Joseph/F-3393-2014; Rohrer,
   Gregory/A-9420-2008
OI Rollett, Anthony/0000-0003-4445-2191; Tucker,
   Joseph/0000-0002-7214-9272; Rohrer, Gregory/0000-0002-9671-3034
FU High Performance Computing Modernization Office; Air Force Office of
   Scientific Research; General Electric Company; NSF Carnegie Mellon MRSEC
FX This work was supported, in part, by the PETTT program from the High
   Performance Computing Modernization Office, the Air Force Office of
   Scientific Research, the General Electric Company and the NSF-supported
   Carnegie Mellon MRSEC. The statistical computing package R was used for
   visualization. The AFRL package DREAM.3-D was used to analyze the IN100
   3-D dataset.
NR 19
TC 11
Z9 12
U1 1
U2 15
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 APR
PY 2012
VL 66
IS 8
BP 554
EP 557
DI 10.1016/j.scriptamat.2012.01.001
PG 4
WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary;
   Metallurgy & Metallurgical Engineering
SC Science & Technology - Other Topics; Materials Science; Metallurgy &
   Metallurgical Engineering
GA 912QY
UT WOS:000301815900014
ER

PT J
AU Nandwana, P
   Nag, S
   Hill, D
   Tiley, J
   Fraser, HL
   Banerjee, R
AF Nandwana, P.
   Nag, S.
   Hill, D.
   Tiley, J.
   Fraser, H. L.
   Banerjee, R.
TI On the correlation between the morphology of alpha and its
   crystallographic orientation relationship with TiB and beta in
   boron-containing Ti-5Al-5Mo-5V-3Cr-0.5Fe alloy
SO SCRIPTA MATERIALIA
LA English
DT Article
DE Ti5553; TiB; EBSD; Crystallography; Orientation relationship
ID MICROSTRUCTURE; COMPOSITES
AB While the role of borides on the microstructure of titanium alloys has been discussed in many previous reports, this paper presents the first experimental evidence of (i) the three-dimensional geometry of a precipitates confirming their equiaxed morphology, as determined by reconstruction of serially sectioned scanning electron microscopy images; and (i) the influence of the crystallographic orientation relationship between beta, TiB and a phases on the morphology of alpha precipitates, investigated via detailed orientation microscopy studies on a boron-containing version of the commercial Ti-5Al-5Mo-5V-3Cr-0.5Fe alloy Ti5553. (C) 2012 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
C1 [Nandwana, P.; Nag, S.; Banerjee, R.] Univ N Texas, Dept Mat Sci & Engn, Ctr Adv Res & Technol, Denton, TX 76203 USA.
   [Hill, D.; Fraser, H. L.] Ohio State Univ, Dept Mat Sci & Engn, Ctr Accelerated Maturat Mat, Columbus, OH 43210 USA.
   [Tiley, J.] USAF, Res Lab, Dayton, OH USA.
RP Banerjee, R (reprint author), Univ N Texas, Dept Mat Sci & Engn, Ctr Adv Res & Technol, Denton, TX 76203 USA.
EM banerjee@unt.edu
OI Nandwana, Peeyush/0000-0002-5147-1668
NR 12
TC 10
Z9 10
U1 4
U2 32
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 APR
PY 2012
VL 66
IS 8
BP 598
EP 601
DI 10.1016/j.scriptamat.2012.01.011
PG 4
WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary;
   Metallurgy & Metallurgical Engineering
SC Science & Technology - Other Topics; Materials Science; Metallurgy &
   Metallurgical Engineering
GA 912QY
UT WOS:000301815900025
ER

PT J
AU Hari, SB
   Morrow, MS
AF Hari, Sunil B.
   Morrow, Michael S.
TI Rethinking Nephrolithiasis in Military Aviation
SO AVIATION SPACE AND ENVIRONMENTAL MEDICINE
LA English
DT Article
DE kidney stone; calculi; Navy pilot; nephrolithiasis; aerospace medicine
ID COMPLICATIONS; URETEROSCOPY; CALCULI; STONES
AB Background: Nephrolithiasis is a common medical condition among aviation personnel that can negatively impact their health and careers. Due to the potentially severe consequences of in-flight renal colic associated with nephrolithiasis, current Navy regulations stipulate extensive evaluation for any aircrew member who has an instance of kidney stones. Case Report: Two cases of Naval aircrew members with kidney stones are reviewed and current Navy standards regarding nephrolithiasis are discussed. Discussion: Current Navy standards for granting aeromedical waivers for kidney stones do not differentiate between pilots in actual control of the aircraft and other aircrew members among aircraft personnel. Furthermore, a premium is placed on stone-free status, even for asymptomatic, incidentally found nephroliths. This policy has many similarities, but also significant differences from those of other services and those of civilian aviation authorities. This difference in protocols across aviation communities should be re-examined in order to promote more efficient return to flying duties of operational personnel without compromising safety of flight.
C1 [Hari, Sunil B.; Morrow, Michael S.] USN, Tinker Afb, OK USA.
RP Hari, SB (reprint author), 7791 Mercury Rd,Bldg 820, Tinker Afb, OK 73145 USA.
EM sunil.hari@navy.mil
NR 14
TC 1
Z9 1
U1 0
U2 2
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 APR
PY 2012
VL 83
IS 4
BP 445
EP 448
DI 10.3357/ASEM.3164.2012
PG 4
WC Public, Environmental & Occupational Health; Medicine, General &
   Internal; Sport Sciences
SC Public, Environmental & Occupational Health; General & Internal
   Medicine; Sport Sciences
GA 913SA
UT WOS:000301896500011
PM 22462375
ER

PT J
AU Catoire, L
   Chambreau, SD
   Vaghjiani, GL
AF Catoire, Laurent
   Chambreau, Steven D.
   Vaghjiani, Ghanshyam L.
TI Chemical kinetics interpretation of hypergolicity of dicyanamide ionic
   liquid-based systems
SO COMBUSTION AND FLAME
LA English
DT Article
DE Ionic liquids; Combustion; Ignition; Hypergolicity
ID GAS-PHASE; SHOCK-TUBE; COMBUSTION; IGNITION; SALTS; THERMOCHEMISTRY;
   TEMPERATURES; REACTIVITY; PYROLYSIS; CHEMISTRY
AB Ionic liquids are candidates for replacing hydrazine and hydrazine derivatives systems. A detailed chemical kinetics model has been built to examine the gas-phase chemistry between isocyanic acid (HNCO), white fuming nitric acid (WFNA), N2O, CO2, and water, especially at low temperatures (ambient to 423 K). This kinetics model is able to explain the gas-phase ignition observed during hypergolic ignition of the ionic liquid 1-butyl-3-methyl-imidazolium dicyanamide (BMIM-dca) with WFNA. Sensitivity analyses have been performed to examine the reaction pathways for ignition. Ignition is predicted to occur via an exothermic reaction between isocyanic acid (HNCO) and nitric acid (HONO2), and subsequent HONO2 thermal decomposition that has NO2 and OH radicals as the primary chain carriers. A detailed understanding of the initiation processes in the liquid phase is needed, as the BMIM-dca and WFNA begin to react to produce the above preignition species for the proposed chemical kinetics model to describe the ignition behavior of the system. (C) 2011 The Combustion Institute. Published by Elsevier Inc. All rights reserved.
C1 [Catoire, Laurent] ENSTA ParisTech, F-75739 Paris 15, France.
   [Catoire, Laurent] Univ Orleans, F-45071 Orleans, France.
   [Catoire, Laurent] ICARE CNRS, F-45071 Orleans, France.
   [Chambreau, Steven D.] ERC Inc, Edwards AFB, CA 92524 USA.
   [Vaghjiani, Ghanshyam L.] USAF, Res Lab, Propellants Branch AFRL RZSP, Edwards AFB, CA 92524 USA.
RP Catoire, L (reprint author), ENSTA ParisTech, 32 Blvd Victor, F-75739 Paris 15, France.
EM laurent.catoire@cnrs-orleans.fr
FU European Office of Aerospace Research & Development (EOARD)
   [FA8655-07-M-4009]; Air Force Office of Scientific Research (AFOSR)
   [FA9300-06-C-0023]
FX This research was supported by the European Office of Aerospace Research
   & Development (EOARD) under Contract FA8655-07-M-4009 and by the Air
   Force Office of Scientific Research (AFOSR) under Contract
   FA9300-06-C-0023. Drs. T. Hawkins and C.W. Larson are thanked for
   providing the I, values.
NR 47
TC 7
Z9 8
U1 1
U2 19
PU ELSEVIER SCIENCE INC
PI NEW YORK
PA 360 PARK AVE SOUTH, NEW YORK, NY 10010-1710 USA
SN 0010-2180
J9 COMBUST FLAME
JI Combust. Flame
PD APR
PY 2012
VL 159
IS 4
BP 1759
EP 1768
DI 10.1016/j.combustflame.2011.12.007
PG 10
WC Thermodynamics; Energy & Fuels; Engineering, Multidisciplinary;
   Engineering, Chemical; Engineering, Mechanical
SC Thermodynamics; Energy & Fuels; Engineering
GA 910JF
UT WOS:000301632300034
ER

PT J
AU Dester, GD
   Rothwell, EJ
   Havrilla, MJ
AF Dester, Gary D.
   Rothwell, Edward J.
   Havrilla, Michael J.
TI Two-Iris Method for the Electromagnetic Characterization of
   Conductor-Backed Absorbing Materials Using an Open-Ended Waveguide Probe
SO IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
LA English
DT Article
DE Absorbing media; material testing; permeability measurement;
   permittivity measurement; rectangular waveguides; waveguide
   discontinuities
AB A two-iris waveguide-probe technique is introduced for measuring the electromagnetic properties of a lossy conductor-backed material layer. A flanged open-ended rectangular waveguide is applied to the material under test, and the reflected signal is measured under two conditions. The reflection is first measured when the aperture of the waveguide is unobstructed; then, the reflection is measured with an iris placed in the aperture of the guide. These two measurements allow the extraction of both the permittivity and permeability of the material. The theoretical reflection coefficient necessary to perform the extraction is obtained using a rigorous full-wave approach combining a modal expansion in the waveguide and iris regions with a magnetic-field integral equation formed using equivalent currents at the waveguide aperture. The optimum iris size is determined by minimizing the propagated error due to instrumentation uncertainty and by comparing the extracted parameters to those found using a two-thickness method. Measurements of a commercially available magnetic radar-absorbing material demonstrate the feasibility of the two-iris approach.
C1 [Dester, Gary D.] Gen Dynam Adv Informat Syst, Ypsilanti, MI 48197 USA.
   [Rothwell, Edward J.] Michigan State Univ, Dept Elect & Comp Engn, E Lansing, MI 48824 USA.
   [Havrilla, Michael J.] USAF, Inst Technol, Dept Elect & Comp Engn, Wright Patterson AFB, OH 45433 USA.
RP Dester, GD (reprint author), Gen Dynam Adv Informat Syst, Ypsilanti, MI 48197 USA.
EM Gary.Dester@gd-ais.com; rothwell@egr.msu.edu; Michael.Havrilla@afit.edu
FU Air Force Research Laboratory [05-S508-017-C1]
FX Manuscript received May 2, 2011; revised August 13, 2011; accepted
   September 26, 2011. Date of publication November 28, 2011; date of
   current version March 9, 2012. This work was supported by the Air Force
   Research Laboratory under Subcontract Agreement 05-S508-017-C1. The
   Associate Editor coordinating the review process for this paper was Dr.
   Sergey Kharkovsky.
NR 14
TC 10
Z9 10
U1 0
U2 3
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 0018-9456
J9 IEEE T INSTRUM MEAS
JI IEEE Trans. Instrum. Meas.
PD APR
PY 2012
VL 61
IS 4
BP 1037
EP 1044
DI 10.1109/TIM.2011.2174111
PG 8
WC Engineering, Electrical & Electronic; Instruments & Instrumentation
SC Engineering; Instruments & Instrumentation
GA 908RH
UT WOS:000301507300019
ER

EF