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Displaying 2176 - 2200 of 17262

A new realization of SI for organic chemical measurement: NIST PS1 Primary Standard for quantitative NMR (Benzoic Acid)

July 30, 2018
Author(s)
Michael A. Nelson, Jason F. Waters, Blaza Toman, Brian E. Lang, Alexander R?ck, Kathrin Breitruck, Markus Obkircher, Anthony Windust, Katrice A. Lippa
… and extensively-characterized PS1 Benzoic Acid Primary Standard for quantitative NMR serves as a definitive, primary … characterization of chemical reference materials, PS1 is a standard for developing other traceable standards and is … metrological traceability, chemical metrology, primary standard, quantitative NMR, NMR spectroscopy, organic …

NIST Handbook 105-4: Specifications and Tolerances for Reference Standards and Field Standard Weights and Measures, Specifications and Tolerances for Liquefied Petroleum Gas and Anhydrous Ammonia Liquid Volumetric Provers (2016 Ed.)

December 13, 2016
Author(s)
Georgia L. Harris, Val R. Miller
… and tolerances are recommended as minimum requirements for standards used by state and local weights and measures … may find this handbook helpful in the design of volumetric standards for measuring pressurized liquid commodities, but … pressure relief valve, pressurized volumetric field standards, provers, specifications, vapor return, volumetric …

Effects of annealing conditions on temperature coefficient of resistance of Pt thin-film thermistors

January 21, 2023
Author(s)
Atasi Dan, Erica Freire Antunes, Chris Yung, Nathan Tomlin, Michelle Stephens, John H. Lehman
… while surviving high-temperature carbon nanotube growth at 800°C. In the present work, Pt thin-film thermistors are … an operational range of 20–50°C when Pt was annealed at 800°C for 1h and 3h in air and Ar, respectively. … in thin film blister-ing and delamination when annealed at 800°C for 1h in air. A Pt/AlOx thermistor with a TCR of …

Josephson Voltage Standards

October 1, 2000
Author(s)
Clark A. Hamilton
… paper reviews the development and use of Josephson voltage standards over the last 30 years, including classical dc standards, programmable standards based on binary weighted arrays, pulse-driven … Josephson Voltage Standards …

Activity standard and calibrations for 227Th with ingrowing progeny

April 20, 2024
Author(s)
Denis E. Bergeron, Jeffrey T. Cessna, Brittany Broder, Leticia Pibida, Ryan P. Fitzgerald, Morgan DiGiorgio, Elisa Napoli, Brian E. Zimmerman
… Th-227, Ra-223, primary standard, decay chain, progeny ingrowth, dose calibrator, … Activity standard and calibrations for 227Th with ingrowing progeny …

Certifying NIST Standard Reference Material 2389a, Amino Acids in 0.1 mol/L HCl Absolute Quantification by ID LC-MS/MS

May 18, 2010
Author(s)
Mark S. Lowenthal, David M. Bunk, Karen W. Phinney
… to accurately quantify amino acid concentrations in NIST Standard Reference Material (SRM) 2389a Amino Acids in 0.1 … for characterization of routine methods and serves as a standard for higher order measurement traceability. This is … amino acids, standard reference material, mass spectrometry, isotope …

Framework for Cyber-Physical Systems: Volume 3, Timing Annex

September 28, 2017
Author(s)
David A. Wollman, Marc A. Weiss, YaShian Li-Baboud, Edward R. Griffor, Martin J. Burns
… the timing subgroup, which supplements information in NIST SP 1500-202. … Special Publication (NIST SP) - 1500-203 …

SRM 2806 (ISO Medium Test Dust in Hydraulic Oil): A Particle-Contamination Standard Reference Material for the Fluid Power Industry

August 1, 1999
Author(s)
Robert A. Fletcher, Jennifer R. Verkouteren, Eric S. Windsor, David S. Bright, Eric B. Steel, John A. Small, Walter S. Liggett Jr
… Standard Reference material (SRM) 2806 is composed of ISO … hydraulic oil. SRM 2806 is a traceable particle count standard and is certified for number of particles larger than … analysis. The number distribution found in the existing standard method, ISO 4402 (ISO 4402, 1991), and SRM 2806 are …
Displaying 2176 - 2200 of 17262
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