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Displaying 1726 - 1750 of 17262

Simultaneous Mass Bias and Elemental Fractionation Corrections Utilizing Isotopic Solid Standards and Laser Ablation ICPMS

December 1, 2005
Author(s)
W C. Davis, Steven J. Christopher, Gregory C. Turk
… analytes of known isotopic abundance into sol-gel derived standards that mimic important mineral systems has the … technical note reports on the synthesis of solid glass standards produced via the sol-gel method and doping with … Pb isotope ratios show that these solid isotopic reference standards are capable of correcting for instrumental mass …

Implementation of a 1 GO star-mesh graphene quantum Hall array resistance standard network for high resistance calibration

July 3, 2025
Author(s)
Dean Jarrett, Albert Rigosi, Yanfei Yang, Alireza Panna, David Newell, Ngoc Thanh Mai Tran, Wei-Chen Lin, Marta Musso, Cheng-Hsueh Yang, Chi-Te Liang, Massimo Ortolano, Randolph Elmquist
… A 1 GΩ star-mesh quantized Hall array resistance standard (QHARS) made of thirty-seven quantum Hall effect … measurement system. The 1 GΩ star-mesh QHARS was used as a standard to calibrate 100 MΩ, 1 GΩ, and 10 GΩ high resistance … The star-mesh measurements agreed within the combined standard uncertainties of the values of these standards based …

AC and DC Quantized Hall Array Resistance Standards

August 28, 2020
Author(s)
Randolph E. Elmquist, Mattias Kruskopf, Dinesh K. Patel, I Fan Hu, Chieh-I Liu, Albert F. Rigosi, Alireza R. Panna, Shamith U. Payagala, Dean G. Jarrett
… Quantized Hall array resistance standards (QHARS) span values from 100 (ohm) to 1 M(ohm) and … electrical measurement standards, quantized Hall resistance, epitaxial graphene, … AC and DC Quantized Hall Array Resistance Standards …

NIST Measurement Services: Specular Gloss

May 15, 2006
Author(s)
Maria E. Nadal, E A. Early, E A. Thompson
… This document describes the instrumentation, standards, and measurement techniques used at the National Institute of Standards and Technology (NIST) to measure specular gloss. … for establishing a reference goniophotometer and primary standards for specular gloss and associated calibration …

Comparison of the NIST and ENEA Air Kerma Standards

January 1, 1998
Author(s)
R F. Laitano, P J. Lamperti, M P. Toni
… Journal of Research of the National Institute of Standards and Technology … Comparison of the NIST and ENEA Air Kerma Standards …

Improved uncertainty budget for optical frequency measurements with microkelvin neutral atoms: Results for a high-stability 40 Ca optical frequency standard

August 18, 2006
Author(s)
G Wilpers, Christopher W. Oates, Leo W. Hollberg
… Using a Ca optical frequency standard at 657 nm, we demonstrate a method for reducing … advantage of the low instability of the calcium frequency standard (4x10 -15 at 1 s). The resultant fractional frequency uncertainty for the standard is 6.6x10 -15 , the lowest reported to date for a …

Summary Report: Meeting of the ASME Standards Subcommittee on Advanced Monitoring, Diagnostics, and Prognostics for Manufacturing Operations Hosted at NIST

March 20, 2020
Author(s)
Brian A. Weiss, Michael P. Brundage, Joan Pellegrino
… The National Institute of Standards and Technology (NIST) hosted the ASME Standards Subcommittee Meeting on Advanced Monitoring, … progress, future needs, and prioritize work activities for standards and guidelines related to advanced monitoring, … processes, manufacturing systems, prognostics, standards …

Collected Publications Related to the Use of Elevators During Fires.

May 1, 2002
Author(s)
Richard W. Bukowski, Star R. Burgess, Paul A. Reneke
… TO VIEW NIST SP 983 GO TO WEBSITE: http://wtc.nist.gov/pubs/elevators In … Because of the renewed interest and in support of ongoing standards activities in ISO NIST decided to collect relevant … Special Publication (NIST SP) - 983 …

Digital Twin Lab: Supporting Research and Development, and Standards and Implementations

August 29, 2025
Author(s)
Rishabh Venketesh, Deogratias Kibira, Guodong Shao, Matthew Triebe
… Integration Division (SID) at the National Institute of Standards and Technology (NIST) has established a Digital … being implemented in the lab. Additionally, the relevant standards and potential areas of improvement in these standards will be discussed. Lastly, we will explore possible …

NIST Special Publication 250-79 Airspeed Calibration Service.

September 26, 2007
Author(s)
Tsyh Tyan Yeh, J. M. Hall
… The National Institute of Standards and Technology (NIST) provides calibration services … tube probe and thermal anemometer are used as check standards. The wind tunnel used for the calibration has a … the methods of operation and uncertainty of NIST airspeed standards. An extensive component analysis of the system was …

Characterization of Perchlorate in a New Frozen Human Urine Standard Reference Material

October 1, 2012
Author(s)
Lee L. Yu, William C. Davis, Rabia Oflaz, Gregory C. Turk, Jeff M. Jarrett, Liza Valentin, Benjamin C. Blount, Dennis D. Leber, Eric L. Kilpatrick
… Centers for Disease Control and Prevention (CDC) developed Standard Reference Material (SRM) 3668 Mercury, Perchlorate, … perchlorate, urine, standard reference material, certified reference material … Characterization of Perchlorate in a New Frozen Human Urine Standard Reference Material …

Pulse Transition Duration Measurements and Standards at NIST -- 1975 to 1988

August 1, 2000
Author(s)
W L. Gans, N. S. Nahman, J R. Andrews, E E. Baldwin
… are presented. Subjects discussed include the IEEE Pulse Standards 181-77 and 194-77, deconvolution as applied in (1) … NBS 50ps, 100ps, and 200 ps Transition Duration Transfer Standards which are based upon a tunnel diode step-like … mechanical drawings for the transition Duration Transfer Standards. …

An Overview of the Development of Technical Infrastructure in the Asia-Pacific Region: The Work of the Asia-Pacific Economic Cooperation (APEC) Sub-Committee in Standards and Conformance (SCSC) and the Specialist Regional Body (SRBS)

June 1, 1999
Author(s)
C R. DeVaux
… The development and maintenance of an economy's standards and conformance technical infrastructure is … Asia-Pacific Economic Cooperation (APEC) Sub-Committee on Standards and Conformance (SCSC) and the Specialist Regional … Asia-Pacific, conformity assessment, documentary standards, mutual recognition, physical standards, technical …

State Weights and Measures Laboratories: State Standards Program Description and Directory

December 31, 2009
Author(s)
Georgia L. Harris
… In support of its mission to promote uniform standards of measurement throughout the country NIST received funds in 1965 to provide new standards of mass, length, and volume to State weights and … laboratories. This program, called the (New) State Standards Program, also provided the equipment needed to …
Displaying 1726 - 1750 of 17262
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