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Displaying 10976 - 11000 of 17273

High Rate Tensile Strength Measurements of Frangible Bullets Using a Kolsky Bar

June 8, 2008
Author(s)
Steven P. Mates, Richard L. Rhorer, Stephen W. Banovic, Eric P. Whitenton, Richard J. Fields
The tensile strength of frangible bullets is measured by a high rate diametral compression test (DCT) performed with a Kolsky Bar. Frangible bullets, meant to disintegrate on impact by brittle failure, also exhibit significant plasticity in compression. As

Development of a Motion Imagery Quality Metric

November 20, 2006
Author(s)
J Irvine, Charles D. Fenimore, D Cannon, Donna Haverkamp, John W. Roberts, S Israel, L Simon, J Miller, A Aviles, Michelle Brennan
The motion imagery community would benefit from the availability of standard measures for assessing image interpretability. The National Imagery Interpretability Rating Scale (NIIRS) has served as a community standard for still imagery, but no comparable

High Rate Tensile Strength Measurements of Frangible Bullets Using a Kolsky Bar

January 1, 2006
Author(s)
S P. Mates, Richard L. Rhorer, S Banovic, Eric P. Whitenton, Richard J. Fields
The tensile strength of frangible bullets is measured by a high rate diametral compression test (DCT) performed with a Kolsky Bar. Frangible bullets, meant to disintegrate on impact by brittle failure, also exhibit significant plasticity in compression. As

Traceable Force Metrology for Micronewton Level Calibration

October 1, 2004
Author(s)
Jon R. Pratt, Richard Seugling
… a capacitance-based load detection scheme. Transfer standards of this nature are primarily envisaged for use as a … approaches for establishing traceable small force standards are currently under investigation at NIST [], PTB …

Earning the Stamp of Approval: How to Achieve Optimal Usability

January 1, 2003
Author(s)
Susan L. Makar
… scientists and engineers at the National Institute of Standards and Technology have relied on it for their research … Its mission is to develop and promote measurements, standards, and technology to enhance productivity, facilitate …

Measurements of the Refractive Indices of MOCVD and HVPE Grown AlGAN Films Using Prism-Coupling Techniques Correlated With Spectroscopic Reflection/Transmission Analysis

January 1, 2003
Author(s)
Norman Sanford, Larry Robins, Albert Davydov, Alexander J. Shapiro, Denis V. Tsvetkov, Vladimir A. Dmitriev, Stacia Keller, Umesh Mishra, Steven P. DenBaars
Waveguide prism-coupling methods were used to measure the ordinary and extraordinary refractive indices of Al xGaN films grown on sapphire substrates by HVPE and MOCVD. Several discrete wavelengths ranging from 442 nm to 1064 nm were used and the results

Ionization Constant of Water

June 10, 2025
Author(s)
Hugues Arcis, Allan Harvey
This is an update of two tables in the CRC Handbook of Chemistry and Physics (for the 106th ed.) to reflect a new standard formulation adopted in 2024 by the International Association for the Properties of Water and Steam (IAPWS).

Bound Electron Nonlinearity Beyond the Ionization Threshold

September 18, 2017
Author(s)
Jared K. Wahlstrand, Sina Zahedpour, H M. Milchberg
Using supercontinuum spectral interferometry, we measure the ionization induced optical phase shift in three noble gases and nitrogen and oxygen. Results largely support the standard model of filamentation.

Optical Lattice Clocks

January 1, 2015
Author(s)
Andrew D. Ludlow, Christopher W. Oates
… briefly describe recent advances in these atomic frequency standards, looking to future work and applications. …

AI-Powered ParaView for NIST: Enabling Accessible Scientific Visualization

November 3, 2025
Author(s)
Simon Su, William Sherman, Judith Terrill
… outlines the research agenda for National Institute of Standards and Technology (NIST)'s AI-Powered ParaView effort … interface will also be described. We also propose a set of standards to objectively evaluate and compare the …

Cost Estimates for the Seismic Retrofit of Federally Owned and Leased Buildings

June 25, 2018
Author(s)
Juan F. Fung, David T. Butry, Siamak Sattar, Steven L. McCabe
Presidential Executive Order 13717, Establishing a Federal Earthquake Risk Management Standard, encourages federal agencies to “enhance resilience…[to] future earthquakes” by evaluating and retrofitting existing federal buildings based on current existing

The effect of self-consistent potentials on EXAFS analysis

November 1, 2017
Author(s)
Bruce Ravel, M. Newville, Josh J. Kas, John J. Rehr
… data analysis by methodical testing of theoretical fitting standards against a curated suite of measured EXAFS data. For … structural model and theoretical fitting standards computed both with and without self-consistent …
Displaying 10976 - 11000 of 17273
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