An official website of the United States government
Here’s how you know
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.
Nicholas Paulter, John Jendzurski, Mike McTigue, Bill Hagerup, Thomas E. Linnenbrink
The Technical Committee 10 (TC10) of the IEEE Instrumentation and Measurement Society initiated a new standards activity in 2006 for the development of test
Daniel V. Esposito, Igor Levin, Thomas P. Moffat, Albert A. Talin
Photoelectrochemical (PEC) water splitting represents a promising route for renewable production of hydrogen, but trade-offs between photoelectrode stability
Fabian M. Neuhaus, Amanda Vizedom, Ken Baclawski, Mike Bennet, Mike Dean, Michael Denny, Michael Gruninger, Ali Hashemi, Terry Longstreth, Leo Obrst, Steven R. Ray, Ram D. Sriram, Todd Schneider, Marcela Vegetti, Matthew West, Peter Yim
Currently, there is no agreed on methodology for development of ontologies, and there is no consensus on how ontologies should be evaluated. Consequently
We have fabricated and characterized a novel DNA based nanofiber created by synergistic self-assembly of guanine quadruplex (Hoogsteen base pairing) and double
Norman A. Sanford, Lawrence H. Robins, Paul T. Blanchard, K. Soria, B. Klein, Kristine A. Bertness, John B. Schlager, Aric W. Sanders
Variable intensity photoconductivity (PC) performed under vacuum at 325 nm was used to estimate drift mobility and negative surface charge density sigma for c
Density, speed of sound, and viscosity have been measured for samples of RP-1 and RP-2 that were stressed for 0.5 min at 475 °C and 510 °C at a pressure of 17
Bryant C. Nelson, Bryce J. Marquis, Piper R. Hunt, Katherine M. Tyner, Sean Conklin, Nicholas Olejnik, Robert L. Sprando
The utility of C. elegans as an alternative model to assess nanomaterial toxicity was evaluated using 10 nm silver particles (10nmAg). Endpoints of nanomaterial
Robert D. Shull, Yury Y. Iunin, Y. P. Kabanov, Valerian I. Nikitenko, O. V. Skryabina, C. L. Chien
The effect of varying the interlayer coupling between two 0.6 nm thick Co layers with perpendicular anisotropy on their magnetic ground state and the domain
Lu Deng, Edward W. Hagley, R Q. Wang, Charles W. Clark
Nonlinear optics has come a long way since the laser. This article reviews recent progress in coherent light-matter wave mixing and introduces some new concepts
Dazhen Gu, James P. Randa, Robert L. Billinger, Dave K. Walker
We report a record low noise temperature (NT) measured on a cryogenic low-noise amplifier (LNA) at the National Institute of Standards and Technology (NIST)
Albert Davydov, Geetha G. Aluri, Abhishek Motayed, Vladimir P. Oleshko, Kristine A. Bertness, Mulpuri V. Rao
A highly sensitive and selective detection of traces of nitro-aromatic explosive compounds by functionalizing gallium nitride (GaN) nanowires with anatase phase
Current methods of critical evaluation of wavelengths, energy levels, and transition probabilities for atoms and atomic ions at the National Institute of
David M. Bunk, Karen W. Phinney, John C. Lieske, Olga Bondar, W. Greg Miller, Lorin M. Bachmann, Andrew S. Narva, Yoshihisa Itoh, Schimmel Heinz
Background: Increased urinary excretion of albumin reflects kidney damage and is a recognized risk factor for progression of renal and cardiovascular disease
A new method is introduced to automatically detect faulty regulation of temperatures, pressures, and flow rates within the heating, ventilating, and air
Michael D. Coble, Carolyn R. Steffen, John M. Butler
The PowerPlex Y23 kit contains 23 Y-chromosomal loci including all 17 of the markers in the Yfiler Y-STR kit plus six additional markers: DYS481, DYS533, DYS549
Joshua A. Hadler, Edna L. Tobares, Marla L. Dowell
In random testing of 122 commercial laser pointers, we observed that 89.7 % of green pointers and 44.4 % of red pointers were not in compliance with the Code of
There is a lack of understanding of how structural systems perform under realistic, uncontrolled fires. Fire protection of steel structures is usually provided
A new method for obtaining Kikuchi diffraction patterns from thin specimens in transmission has been developed for use in the SEM, scanning electron microscope
An analytical model is formulated for the irradiance on a surface (collector) with a rear (opposite the sun) planar vertical diffuse reflector, as is common for
James E. Norris, Steven J. Choquette, Franklin R. Guenther, Joele Viallon, Philippe Moussay, Robert Wielgosz
Ambient ozone measurements in the U.S. and many other countries are traceable to a National Institute of Standards and Technology Standard Reference Photometer
Xueyu Pang, Dale P. Bentz, Christian Meyer, Gary Funkhouser, Robert Darbe
Two different methods of evaluating cement hydration kinetics, namely chemical shrinkage and isothermal calorimetry tests, are used to investigate the early
A K. Giri, Brigitte A. Paterson, Michael V. McLeod, Cindi L. Dennis, B S. Majumdar, Kyu C. Cho, Robert D. Shull
Prior to the development of commercial applications of magnetic refrigerator technology, a large magnetocaloric effect (MCE) in polycrystalline materials must
Richard E. Cavicchi, Douglas C. Meier, Cary Presser, Suvajyoti S. Guha
Samples of suspended gold nanoparticles in the diameter range 10 nm to 100 nm were subjected to a single 7 ns pulse from a 532 nm laser to determine the effects
Robert F. Cook, Sang-Min Lee, De-Hao D. Tsai, Vincent A. Hackley, Martin W. Brechbiel
We demonstrate a prototype approach to formulate gold nanoparticle (AuNP)based Xray absorbing adjuvant agents through surfaceengineering of cisplatin
We generalize generating functions for hypergeometric orthogonal polynomials, namely Jacobi, Gegenbauer, Laguerre, and Wilson polynomials. These generalizations
Molecular dynamics (MD) simulations were used to refine and extend a theoretical model that describes the interactions of single polyethylene glycol molecules
Mohammad Olfatnia, Siddharth Sood, Jason J. Gorman, Shorya Awtar
This paper reports in-plane electrostatic combdrive actuators with stroke as large as 245 μm that is achieved by employing a novel Clamped Paired Double