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NIST Authors in Bold

Displaying 22251 - 22275 of 73697

Towards Data Format Standardization for X-ray Absorption Spectroscopy

November 1, 2012
Author(s)
Bruce Ravel, J. R. Hester, V. A. Sole, M. Newville
A working group on data format standardization for X-ray Absorption Spectroscopy has recently formed under the auspices of International X-ray Absorption Society and the XAFS Commission of the IUCr. This group of beamline scientists and XAS ractitioners

A Study on Safety: Highlights from Workshop on Ambulance Patient Compartments

October 31, 2012
Author(s)
Jennifer L. Marshall, Yung-Tsun T. Lee
In 2010, there were more than 250 U.S. ambulance crashes that were reported in the news media [Ballam 2011]. During such accidents, emergency medical technicians (EMTs) who ride in the ambulance patient compartment while caring for patients are at high

Initial testing of a Si:As blocked-impurity-band (BIB) trap detector

October 31, 2012
Author(s)
Solomon I. Woods, Simon G. Kaplan, Timothy M. Jung, Adriaan C. Carter, James E. Proctor
We discuss the design, construction, and initial test results of a Si:As blocked-impurity-band (BIB) trap detector. The trap consists of two rectangular BIB devices configured in a v-shaped geometry. This trapping geometry is designed to ideally yield a

Statics and Dynamics of the Highly Correlated Spin Ice, Ho 2 Ge 2 O 7

October 31, 2012
Author(s)
A. M. Hallas, J. A. M. Paddison, H. J. Silverstein, A. L. Goodwin, J. R. Stewart, A. Wildes, J. G. Cheng, J. S. Zhou, J. B. Goodenough, E. S. Choi, G. Ehlers, Jason S. Gardner, C. R. Wiebe, H. D. Zhou
The pyrochlore, Ho 2Ge 2O 7, is a new highly correlated spin ice material. Physical property measurements including X-ray diffraction, DC susceptibility and AC susceptibility, confirm that it shares the distinctive characteristics of other known spin ices

First-principles modeling of gold adsorption on BeO (0001)

October 29, 2012
Author(s)
Shmuel Barzilai, Francesca M. Tavazza, Lyle E. Levine
Gold nanowire chains are considered a good candidate for nanoelectronics devices since they exhibit remarkable structural and electrical properties. For practical engineering devices, -wurtzite BeO may be a useful platform for supporting these nanowires

Possibilities, Limits, and Tradeoffs for Refrigerants in the Vapor Compression Cycle

October 29, 2012
Author(s)
Mark O. McLinden, Andrei F. Kazakov, J S. Brown, Piotr A. Domanski, Jae H. Heo
We explore the possibilities for refrigerants having low global warming potential (GWP) using two distinct, but complimentary, approaches. In the first approach, we evaluate the effect of a refrigerant’s fundamental thermodynamic parameters on its

The New Golden Age of Algorithms and Data Structures

October 29, 2012
Author(s)
Paul E. Black
Before 1976 Communications of the ACM printed (and numbered!) new algorithms every issue. Quicksort was invented in 1960, Boyer-Moore string search in 1977, and combsort in 1980. I haven't seen a new, general sorting algorithm in over a decade. The latest

NIST Handbook 133: Checking the Net Contents of Packaged Goods (2013 Ed.)

October 28, 2012
Author(s)
Linda D. Crown, David Sefcik, Lisa Warfield
This handbook has been prepared as a procedural guide for the compliance testing of net contents statements on packaged goods. Compliance testing of packaged goods is the determination of the conformance results of the packaging, distribution, and

Quantifying Dithiothreitol Displacement of Functional Ligands from Gold Nanoparticles

October 27, 2012
Author(s)
De-Hao D. Tsai, Frank W. DelRio, Sherrie R. Elzey, Suvajyoti S. Guha, Michael R. Zachariah, Vincent A. Hackley, Melanie P. Shelton
Dithiothreitol (DTT)-based displacement is widely utilized for separating ligands from their gold nanoparticle (AuNP) conjugates, a critical step for differentiating and quantifying surface-bound functional ligands and therefore the effective surface

A SMALL-SAMPLE, BI-DIRECTIONAL SCATTERING MEASUREMENT SYSTEM FROM 200-500 GHz

October 26, 2012
Author(s)
David R. Novotny, Josh Gordon, Edwin J. Heilweil, Brian C. Stillwell, Jeffrey R. Guerrieri, Erich N. Grossman, Shu Z. Lo
Beginning the fall of 2012, NIST will be providing scattering measurements for other government agencies. We present performance results of a bi-directional scattering measurement system in the 200-500 GHz range. The goal is to provide dense-spectrum, bi

A VIRTUAL MACHINE TOOL FOR THE EVALUATION OF STANDARDIZED 5-AXIS PERFORMANCE TESTS

October 26, 2012
Author(s)
Ronnie R. Fesperman Jr., Shawn P. Moylan, M A. Donmez
Standards committees are actively working to develop standard test methods for the performance evaluation of 5-axis machining centers through the direct and indirect measurement of simultaneous motions of all five axes [1-2]. However, the compound effect

Combinatorial Coverage Measurement

October 26, 2012
Author(s)
David R. Kuhn, Raghu N. Kacker, Yu Lei
Combinatorial testing applies factor covering arrays to test all t-way combinations of input or configuration state space. In some testing situations, it is not practical to use covering arrays, but any set of tests covers at least some portion of t-way

Effects of phase-breaking scattering on the thermopower of molecular systems.

October 26, 2012
Author(s)
Adrian Popescu, Paul M. Haney
We study the effects of elastic and inelastic scattering on the thermoelectric transport properties of molecular systems. These systems can exhibit high thermopower due to resonant transmission through molecular orbitals. We focus on systems which exhibit
Displaying 22251 - 22275 of 73697
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