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Displaying 376 - 400 of 2933

Alloy Development and Characterization Services (for United States Currency Applications)

November 6, 2015
Author(s)
Eric Lass, Mark R. Stoudt, Tony Ying, Carelyn E. Campbell
… and quarters. Commercial C71300, a 0.75 copper, 0.25 nickel by mass cupronickel alloy (in shorthand form Cu-25Ni) … coinage alloys. These new alloys are based on current nickel-silver alloys (also referred to as German-silver), which consist of copper, nickel, and zinc. Specifically, NIST agreed to develop three …

Design of a 1 DOF MEMS motion stage for a parallel plane geometry rheometer

December 31, 2015
Author(s)
Yong Sik Kim, Nicholas Dagalakis, Chiara C. Ferraris, Svetlana Avramov-Zamurovic1
Rotational rheometers are used to measure paste properties, but the test would take too long to be useful for a quality control (QC) on the job site. In this paper, a new type of rheometer is proposed based on a one degree of freedom (DOF) micro-electro

SRM 1450d, Fibrous-Glass Board, for Thermal Conductivity from 280 K to 340 K

August 1, 2011
Author(s)
Robert R. Zarr, Amanda C. Harris, John F. Roller, Stefan D. Leigh
Thermal conductivity measurements at and near room temperature are presented as the basis for certified values of thermal conductivity for SRM 1450d, Fibrous Glass Board. The measurements have been conducted in accordance with a randomized full factorial

Hydrodynamic chromatography

June 21, 2012
Author(s)
Andre M. Striegel, Amandaa Brewer
… particle sizing, polymer characterization, chromatography fundamentals, packed column HDC, microcapillary HDC …

Superconformal Film Growth

October 1, 2002
Author(s)
Thomas P. Moffat, Daniel Wheeler, Daniel Josell
… copper plating, damascence plating, metallization, microelectronics, superconformal film …

A Reference Equation of State for Heavy Water

December 3, 2018
Author(s)
Stefan Herrig, Monika Thol, Allan H. Harvey, Eric Lemmon
An empirical fundamental equation of state is presented for heavy water (deuterium oxide, D2O). The equation is explicit in the reduced Helmholtz energy and allows the calculation of all thermodynamic properties over the whole fluid surface. It is valid

Frequency Measurements of Al+ and Hg+ Optical Standards

June 8, 2009
Author(s)
Wayne M. Itano, James C. Bergquist, Till P. Rosenband, David J. Wineland, David Hume, Chin-wen Chou, Steven R. Jefferts, Thomas P. Heavner, Tom Parker, Scott Diddams, Tara Fortier
Frequency standards based on narrow optical transitions in 27Al+ and 199Hg+ ions have been developed at NIST. Both standards have absolute reproducibilities of a few parts in 10 17. This is about an order of magnitude better than the fractional uncertainty

Distribution and Retention of 137 Cs in Sediments at the Hanford Site, Washington

September 1, 2001
Author(s)
J P. McKinley, Cynthia J. Zeissler, J M. Zachara, R J. Serne, Richard M. Lindstrom, H T. Schaef, R D. Orr
sium-137 and other contaminants have leaked from many of the single-shell storage tanks at the Hanford Site in southeastern Washington. The leakage was into sandy unconsolidated sediments consisting largely of quartz, plagioclase, micas, smectite, and
Displaying 376 - 400 of 2933
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