NOTICE: Due to a lapse in annual appropriations, most of this website is not being updated. Learn more.

Form submissions will still be accepted but will not receive responses at this time. Sections of this site for programs using non-appropriated funds (such as NVLAP) or those that are excepted from the shutdown (such as CHIPS and NVD) will continue to be updated.

U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Search Publications

NIST Authors in Bold

Displaying 18276 - 18300 of 73697

Analysis of coincidence-time loopholes in experimental Bell tests

March 4, 2015
Author(s)
B. G. Christensen, A. Hill, P. G. Kwiat, Emanuel Knill, Sae Woo Nam, Kevin Coakley, Scott Glancy, Krister Shalm, Y. Zhang
We apply a distance-based Bell-test analysis method ["Bell inequalities for continuously emitting sources" E. Knill et al. arXiv:14097732 (2014)] to three experimental data sets where conventional analyses failed or required additional assumptions. The

Bell Inequalities for Continuously Emitting Sources

March 4, 2015
Author(s)
Emanuel H. Knill, Scott C. Glancy, Sae Woo Nam, Kevin J. Coakley, Yanbao Zhang
A common experimental strategy for demonstrating non-classical correlations is to show violation of a Bell inequality by measuring a continuously emitted stream of entangled photon pairs. The measurements involve the detection of photons by two spatially

Effects of Partial Halide Anion Substitution on Reorientational Motion in NaBH 4 : A Nuclear Magnetic Resonance Study

March 4, 2015
Author(s)
R. V. Skoryunov, O. A. Babanova, A. V. Soloninin, A. V. Skripov, Kristina Verdal, Terrence J. Udovic
To study the effects of partial halide anion substitution on the reorientational motion of [BH 4] anions in NaBH 4, we have measured the 1H and 11B NMR spectra and spin-lattice relaxation rates in the cubic solid solutions Na(BH 4) 0.5Cl 0.5 and Na(BH 4)d0

Proceedings of SPIE

March 4, 2015
Author(s)
Maritoni A. Litorja, Aaron A. Urbas, Yuqin Zong
The fluorescent light detected by a clinical imager is assumed to be proportional to the amount of fluorescent substance present in the sample. Unfortunately, there are many factors that can add or subtract to the light signal directly attributable to the

An approach for identification and determination of arsenic species in the extract of kelp

March 3, 2015
Author(s)
Lee L. Yu, Rolf L. Zeisler, Rabia Oflaz, Wei Chao, Junting Tong, Haixia Bao, Jun Wang
The National Institute of Standards and Technology is developing a kelp standard reference material (SRM) in support of dietary supplement measurements. Edible seaweeds such as kelp and laver consumed as diet or dietary supplement contain tens of mg/kg

High-Pressure Neutron Scattering of the Magnetoelastic Ni-Cr Prussian Blue Analog

March 3, 2015
Author(s)
Daniel M Pajerowski, S. E. Conklin, Juscelino Leao, Leland Harriger, D. Phelan
This paper summarizes 0 GPa to 0.6 GPa neutron diffraction measurements of a nickel hexacyanochromate coordination polymer (NiCrPB) that has the face-centered cubic, Prussian blue structure. Deuterated powders of NiCrPB contain approximately equal}100 nm

Advanced Metering Infrastructure Smart Meter Upgradeability Test Framework

March 2, 2015
Author(s)
Michaela Iorga, Scott Shorter
As electric utilities turn to Advanced Metering Infrastructures (AMIs) to promote the development and deployment of the Smart Grid, one aspect that can benefit from standardization is the upgradeability of Smart Meters. The National Electrical

High resolution analysis of the nu1 and nu5 bands of phosgene 35Cl2CO and 35Cl37ClCO

March 2, 2015
Author(s)
Walter J. Lafferty, Jean-Marie Flaud, F. Kwabia Tchana, L. Manceron
Fourier transform spectra of phosgene (Cl2CO) have been recorded in the 11.75 μm and 5.47 μm spectral regions using a Bruker IFS125HR spectrometer at resolutions of 0.00102 cm-1 and 0.0015 cm-1 respectively leading to the observation of the ν5 and ν1

Structural Behavior of Li 2 B 10 H 10

March 2, 2015
Author(s)
Hui Wu, Wan Si NMN Tang, Vitalie Stavila, Wei Zhou, John J. Rush, Terrence J. Udovic
Based on x-ray and neutron powder diffraction, first-principles calculations, and neutron vibrational spectroscopy, Li 2B 10H 10 was found to exhibit atypical hexagonal-close-packed symmetry to best stabilize the ionic packing of the relatively small Li +

2D 1HN, 15N Correlated NMR Methods at Natural Abundance for Obtaining Structural Maps and Statistical Comparability of Monoclonal Antibodies

March 1, 2015
Author(s)
Luke Arbogast, Robert G. Brinson, Catherine A. Mouchahoir, James T. Hoopes, John Marino
Purpose High-resolution nuclear magnetic resonance spectroscopy (NMR) provides a robust approach for producing unique spectral signatures of protein higher order structure at atomic resolution. Such signatures can be used as a tool to establish consistency

Adiabatic optimization without local minima

March 1, 2015
Author(s)
Stephen P. Jordan, Michael Jarret
Several previous works have investigated the circumstances under which quantum adiabatic optimization algorithms can tunnel out of local energy minima that trap simulated annealing or other classical local search algorithms. Here we investigate the even

Coexistence of Superconductivity and Antiferromagnetism in (Li 0.8 Fe 0.2 ) OHFeSe

March 1, 2015
Author(s)
X. F. Lu, N. Z. Wang, Hui Wu, Y. P. Wu, D. Zhao, X. Z. Zeng, X. G. Luo, T. Wu, W. Bao, G. H. Zhang, F. Q. Huang, Qingzhen Huang, X. H. Chen
FeSe-derived superconductors show some unique behaviors relative to iron-pnictide superconductors, which are very helpful to understand the mechanism of superconductivity in high-T c iron-based superconductors. The low-energy electronic structure of the

Considerations for Design and In-Situ Calibration of High Accuracy Length Artifacts for Field Testing of Laser Trackers

March 1, 2015
Author(s)
Aaron Hudlemeyer, Daniel S. Sawyer, Christopher J. Blackburn, Vincent Lee, Mark Meuret, Craig M. Shakarji
Interim testing of laser trackers can be problematic due to the lack of high precision, long length artifacts that maintain their calibrated lengths during measurement. Gravitational loading, fixturing forces, and changes in the atmospheric conditions can

Fuzz Testing for Software Assurance

March 1, 2015
Author(s)
Vadim Okun, Elizabeth N. Fong
Fuzz Testing, or fuzzing, is a software testing technique that involves providing invalid, unexpected, or random test inputs to the software system under test. The system is then monitored for crashes and other undesirable behavior. Fuzz testing can be

Investigation of Surrogate Smoldering Ignition Sources for Testing Soft Furnishings

March 1, 2015
Author(s)
Richard G. Gann, Morgan Bruns, Amanda Robbins, Edward J. Hnetkovsky, Michael Ladas
The introduction of cigarette ignition propensity standards has led to a reduction in the availability of high ignition propensity commercial cigarettes. Since high ignition propensity cigarettes are needed for soft furnishing flammability tests, a
Displaying 18276 - 18300 of 73697
Was this page helpful?