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Displaying 24076 - 24100 of 73726

Determination of Moisture Content of Single-Wall Carbon Nanotubes

October 17, 2011
Author(s)
Rolf L. Zeisler, Rabia Oflaz, Ralph E. Sturgeon, Rick L. Paul, Brian E. Lang, Jeffrey A. Fagan, Joseph W. Lam, Anthony Windust, P Grinberg, Benoit Simard, Christopher T. Kingston
Several techniques were evaluated for the establishment of reliable water/moisture content of single-wall carbon nanotubes. Karl Fischer titration (KF) provides for a direct measure of the water content and was used for benchmarking against results

Impact of surface roughness on diffusion of confined fluids

October 17, 2011
Author(s)
William P. Krekelberg, Vincent K. Shen, Jeffrey R. Errington, Thomas M. Truskett
Using event-driven molecular dynamics simulations, we quantify how the self diffusivity of confined hard-sphere fluids depends on the nature of the confining boundaries. We explore systems with featureless confining boundaries that treat particle-boundary

In Memoriam Professor Ralph L. Webb (1934-2011)

October 17, 2011
Author(s)
Mark A. Kedzierski, Richard Goldstien, Ephriam Sparrow, W.J. Minkowycz, Thomas Rudy, Nae-Hyun Kim, Wei Li, Thomas Adamek, Klaus Menze, Raj Manglik, Wieland-Werke AG, Sujoy K. Saha, Arthur Bergles

Porous Superhydrophobic Membranes: Hydrodynamic Anomaly in Oscillating Flows

October 17, 2011
Author(s)
Sukumar Rajauria, O. Ozsun, John R. Lawall, V. Yakhot, Kamil L. Ekinci
Inspiration for man-made superhydrophobic surfaces comes from Nature: the Lotus leaf [1–3], for instance, exploits superhydrophobicity to keep its surface dry and clean from contaminants. Superhydrophobicity emerges due to roughness on a chemically

Strategy and Modeling for Building DR Optimization

October 17, 2011
Author(s)
Richard Lau, Sami Ayyorgun, Siun Chuon Mau, Archan Misra, David Holmberg, Steven T. Bushby
While it is well recognized that renewable microgrid generation and intelligent storage can significantly reduce a building's need for grid power and its peak loading, there is currently no sound and generalized approach to combine these two technologies

In Situ Gas Phase Diagnostics for Titanium Nitride Atomic Layer Deposition

October 14, 2011
Author(s)
James E. Maslar, William A. Kimes, Brent A. Sperling
This report describes the performance of a technique for the simultaneous, rapid measurement of major gas phase species present during titanium nitride thermal atomic layer deposition involving tetrakis(dimethylamido) titanium (TDMAT) and ammonia. In this

Quasi-elastic Neutron Scattering Studies on Dynamics of Water Confined in Nanoporous Copper Rubeanate Hydrates

October 14, 2011
Author(s)
Takeshi Yamada, Ryo Yonaimine, Teppei Yamada, Hiroshi Kitagawa, Madhu Sudan Tyagi, Michihiro Nagao, Osamu Yamamuro
We have investigated the mechanism of the first order transition and proton conductivity in copper rubeanate hydrates from microscopic and dynamical points of view. Three different types of neutron spectrometer, time of flight, back scattering and neutron

Radiation-Induced Synthesis of Poly(vinylpyrrolidone) Nanogel

October 14, 2011
Author(s)
Jung-Chul An, Alia Weaver, Byungnam Kim, Aaron Barkatt, Dianne L. Poster, Wyatt N. Vreeland, Joseph Silverman, Mohamad Al-Sheikhly
Studies of the radiation-induced synthesis of poly(vinylpyrrolidone) (PVP) nanogels, intended to provide a basis for obtaining intra-molecular cross-linked products, which are more useful in drug delivery, show that a sharp change in the controlling

Spatial Distribution of Intra-Molecular Water and Polymeric Components in Polyelectrolyte Dendrimers Revealed by Small Angle Scattering Investigations

October 14, 2011
Author(s)
Bin Wu, Xin Li, Changwoo Do, Tae-Hwan Kim, Chwen-Yang Shew, Yun Liu, Jun Yang, Kunlun Hong, Lionel Porcar, Chun-Yu Chen, Emily L. Liu, Gregory S. Smith, Kenneth W. Herwig, Wei-Ren Chen
An experimental scheme using contrast variation small angle neutron scattering technique (SANS), is developed to investigate the structural characteristics of amine-terminated poly(amidoamine) dendrimers (PAMAM) solutions. Using this methodology, we

Field-induced Quantum Fluctuations in the Heavy Fermion Superconductor CeCu 2 Ge 2

October 13, 2011
Author(s)
Deepak Singh, A. Thamizhavel, Jeffrey W. Lynn, S. K. Dhar, Jose A. Rodriguez, Tobias K Herman
Quantum-mechanical fluctuations in strongly correlated electron systems cause unconventional phenomena such as non-Fermi liquid behavior, and arguably high temperature superconductivity. Here we report the discovery of a field-tuned quantum critical

Chromatographic Sample Collection from Two Phase (gas + liquid) Flows

October 12, 2011
Author(s)
Thomas J. Bruno, Bret Windom
A particularly challenging sample presentation in analytical chemistry is a flowing stream that consists of both a gas and liquid phase, in the situation in which an analysis is needed for both phases, separately. In these cases, the vapor and liquid must

Stirred-Reactor Simulations of Enhanced Reaction in the Presence of Fire Suppressants

October 12, 2011
Author(s)
Gregory T. Linteris, Donald R. Burgess Jr., Fumiaki Takahashi, Viswanath R. Katta, Oliver Meier
Several agents are under consideration to replace CF3Br in suppressing aircraft cargo bays fires. In a Federal Aviation Administration performance test simulating the explosion of an aerosol can, however, the replacements, when added at sub-inerting

Ten years of computer forensic tool testing

October 12, 2011
Author(s)
James R. Lyle, Barbara Guttman, Richard Ayers
The Computer Forensic Tool Testing (CFTT) project at the National Institute of Standards and Technology (NIST) has been active since 2000. The project develops methodologies for testing computer forensic software tools by the creation of general tool

U.S. Commercial Building Airtightness Requirements and Measurements

October 12, 2011
Author(s)
Steven J. Emmerich, Andrew K. Persily
In 1998, Persily published a review of commercial and institutional building airtightness data that found significant levels of air leakage and debunked the “myth” of the airtight commercial building. Since that time, the U.S. National Institute of

Magnetic Field Tuning of Antiferromagnetic Yb 3 Pt 4

October 11, 2011
Author(s)
L. S. Wu, Y. Janssen, C. Marques, M. C. Bennett, M. S. Kim, K. Park, Songxue Chi, Jeffrey W. Lynn, G. Lorusso, G. Biasiol, M.C. Aronson
We present measurements of the specific heat, magnetization, magnetocaloric effect and magnetic neutron diffraction carried out on single cyrstals of antiferromagnetic Yb 3Pt 4, where highly localized Yb moments order at T N = 2.4 K in zero field. The
Displaying 24076 - 24100 of 73726
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