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Displaying 25226 - 25250 of 74176

Microwave Characterization of Transparent Conducting Films

May 26, 2011
Author(s)
Jan Obrzut, Oleg A. Kirillov
The high frequency conductivity of thin metallic and graphitic nano-films attracts interest due to many potential applications in spin electronics, electromagnetic shielding, flexible antennas, displays, and solar cells. The surface morphology of thin

The Effect of Folding on the Internal Structure of Ballistic Fibers

May 26, 2011
Author(s)
Haruki Kobayashi, Walter G. McDonough, Hae-Jeong Lee, Jae H. Kim, Amanda L. Forster, Kirk D. Rice, Gale A. Holmes
In one of our previous studies, the mechanical properties of poly (p-phenylene benzobisoxazole) (PBO) fibers were degraded when the fibers were folded. When we examined poly (p-phenylene terephthalamide) (PPTA) fibers, we did not find a similar drop in

Anemia, Hypothyroidism and Immune Suppression Associated with Polychlorinated Biphenyl Exposure in Bottlenose Dolphins (Tursiops truncatus)

May 25, 2011
Author(s)
John Kucklick, Lori Schwacke, Eric Zolman, Brian C. Balmer, Sylvain De Guise, Clay George, Jennifer Hoguet, Steve Lamb, Milton Levin, J. L. Litz, W E. McFee, Ned Place, Forrest Townsend, Teresa Rowles, Randall Wells, Aleta Hohn
Background: Polychlorinated biphenyls (PCBs) and other legacy organohalogens are often monitored in marine mammals both to understand health risks for populations of these protected species and as an indication of marine food web contamination. Bottlenose

Fluid interactions with metafilm/metasurfaces for tuning, sensing, and microwave assisted chemical processes

May 25, 2011
Author(s)
Joshua A. Gordon, Christopher L. Holloway, James C. Booth, James R. Baker-Jarvis, David R. Novotny, Sung Kim, Yu Y. Wang
In this paper we demonstrate tunability of a metafilm, which is the two-dimensional equivalent of a metamaterial, also referred to as a metasurface, by changing the permittivity in a micro-fluidic channel that interacts with the metafilm. Numerical

Redox-Promoting Protein Motions in Rubredoxin

May 24, 2011
Author(s)
Jose M. Borreguero, Junhong He, F. Meilleur, Kevin Weiss, Craig Brown, D. A. A. Myles, Kenneth W. Herwig, Pratul K. Agarwal
Abstract Proteins are dynamic objects, constantly undergoing conformational fluctuations, yet the linkage between internal protein motion and function is widely debated. This manuscript reports on the characterization of temperature-activated collective

A High Resolution High-Sensitivity Standoff Imaging System at 350 GHz

May 23, 2011
Author(s)
Daniel T. Becker, Cale Gentry, James A. Beall, Hsiao-Mei Cho, William Duncan, Gene C. Hilton, Kent D. Irwin, Peter J. Lowell, Michael D. Niemack, Nicholas G. Paulter Jr., Carl D. Reintsema, Francis J. Schima, Robert E. Schwall, Peter Ade, Carole Tucker, Simon Dicker, Halpern Mark
Millimeter wavelength radiation holds promise for detection of security threats at a distance, including suicide bomb belts and maritime threats in poor weather conditions. The sensitivity provided by superconducting Transition-Edge-Sensor (TES) bolometers

Observation of Collective Atomic Recoil Motion in a Degenerate Fermion Gas

May 23, 2011
Author(s)
Lu Deng, Edward W. Hagley
We demonstrate collective atomic recoil motion with a dilute, ultracold, degenerate fermion gas in a single spin state. By utilizing an adiabatically decompressed magnetic trap with an aspect ratio different from that of the initial trap, a momentum

Performance of RFID Tags in Rough Duty Environments (Structural Fires and Moisture)

May 23, 2011
Author(s)
James R. Lawson, Jonathan L. Kent, Anthony D. Putorti Jr.
Radio frequency identification (RFID) tags have become widely used by industry, retail sales businesses, and government agencies for tracking materials, products, and inventories. This tracking technology is starting to be applied to the management of

Structural Changes in Block Copolymer Micelles Induced by Cosolvent Mixtures

May 23, 2011
Author(s)
Elizabeth G. Kelley, Thomas P. Smart, Andrew Jackson, Millicent O. Sullivan, Thomas H. Epps
The addition of tetrahydrofuran (THF) to aqueous solutions of poly(1,2-butadiene-b-ethylene oxide) [PBPEO] micelles decreased the core-corona interfacial tension. This reduced interfacial tension led to a decrease in micelle size and broadening of the core

Temporal Correlation of Photons Following Frequency Up-conversion

May 23, 2011
Author(s)
Lijun Ma, Matthew T. Rakher, Martin Stevens, Oliver T. Slattery, Kartik Srinivasan, Xiao Tang
We demonstrate an approach to measure temporal correlations of photons in the near infrared range using frequency up-conversion. In this approach, the near infrared signal photons are converted into the visible range, in which highly efficient silicon

Ontological Behavior Modeling

May 20, 2011
Author(s)
Conrad E. Bock, James Odell
This article gives an example of improving the effectiveness of behavior modeling languages using ontological techniques. The techniques are applied to behaviors in the Unified Modeling Language (UML), using the logical meanings for classification

Recent progress in spectroscopy of tungsten

May 20, 2011
Author(s)
Alexander Kramida
This contribution reviews experimental and theoretical work on spectroscopy of tungsten published since the last critical compilation of the energy levels and spectral lines of highly ionized tungsten [K09]. Since then, 15 new experimental studies were

The Infrared Spectra of BF3+ and BF2OH+ Trapped in Solid Neon

May 20, 2011
Author(s)
Marilyn E. Jacox, Warren E. Thompson
Observations on a Ne:BF3 = 400:1 mixture into which a trace of normal or isotopically enriched water had been introduced, codeposited at 4.3 K with a beam of neon atoms that had been excited in a microwave discharge, demonstrate that a pair of absorptions
Displaying 25226 - 25250 of 74176
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