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Standards

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Displaying 176 - 200 of 842

Report on the DHS/NIST Workshop on Standards for an Enduring Capability in Wastewater Surveillance for Public Health (SWWS Workshop)

August 16, 2022
Author(s)
Nancy Lin, Stephanie Servetas, Scott Jackson, Katrice Lippa, Kirsten Parratt, Philip Mattson, Clare Beahn, Mia Mattioli, Sally Gutierrez, Michael Focazio, Ted Smith, Paul Storella, Sarah Wright
Wastewater surveillance is a promising approach to monitor biological and chemical contaminants on a community level in support of public health and safety decisions. Wastewater surveillance has recently been shown highly effective for the early detection

Equations of State for n-Hexadecane and n-Docosane

August 5, 2022
Author(s)
Raffaela Romeo, Eric W. Lemmon
Equations of state for n-hexadecane (C16H34) and n-docosane (C22H46) have been developed as functions of the Helmholtz energy with independent variables of temperature and density. The equations were developed based on experimental values of density, speed

Tensile Tests at 77 K and 4 K on 316L Stainless Steel Welded Plates

July 19, 2022
Author(s)
Dash Weeks, Nicholas Derimow, Jake Benzing
Based on the collaborative framework established between ASME, NASA, and NIST, quasi-static tensile tests were performed in liquid nitrogen (77 K) and liquid helium (4 K) on tensile specimens extracted from the centers of four welded 316L stainless steel

The Expanding Role of National Metrology Institutes in the Quantum Era

July 12, 2022
Author(s)
Alexander Tzalenchuk, Nicolas Spethmann, Tim Prior, Jay H. Hendricks, Yijie Pan, Vladimir Bubanja, Guilherme Temporao, Dai-Hyuk Yu, Damir Ilic, Barbara L. Goldstein
Now that all base units are defined in terms of fundamental constants and can thus — at least in principle — be realized anytime and anywhere, rather than through a measurement chain leading back to unique physical artefacts, who holds the traceability

The need for multicomponent gas standards for breath biomarker analysis

July 7, 2022
Author(s)
Kavita Jeerage, Jennifer Berry, Jacolin Murray, Cassie Goodman, Paulina Piotrowski, Christina Jones, Christina Cecelski, Jennifer Carney, Katrice Lippa, Tara Lovestead
Exhaled breath is a non-invasive, information-rich matrix with the potential to diagnose or monitor disease, including infectious disease. Despite significant effort dedicated to biomarker identification in case control studies, very few breath tests are

Report of the 105th & 106th National Conference on Weights and Measures

June 30, 2022
Author(s)
Shelby Bowers, Yvonne Branden, Tina G. Butcher, Richard A. Harshman, Gloria Diane Lee, David Sefcik, Lisa Warfield
The 105th Annual Meeting of the National Conference on Weights and Measures (NCWM) was held virtually July 12 - 16, 2020. The 106th Annual Meeting of the National Conference on Weights and Measures (NCWM) was held July 18 - 23, 2021, at the Hyatt Regency

Protocols for leakage testing

June 1, 2022
Author(s)
Henne van Heeren, Matthew Davies, Armelle Keiser, Rudy Lagrauw, Darwin Reyes-Hernandez, Vania Silverio, Nicolas Verplanck
This document is written to serve as a guideline for the testing of microfluidic devices, which are devices designed to manipulate fluids that are confined in a small volume. For instance, a channel with at least one dimension smaller than 1 mm is a

5G NR and LTE Coexistence in Public Safety Communications

May 27, 2022
Author(s)
Sneihil Gopal, David W. Griffith
5G New Radio (NR) offers the promise of supporting new Public Safety Communications (PSC) services. Since the majority of the frequency bands worldwide are used by 4th Generation (4G) Long Term Evolution (LTE) and because options such as acquiring new

Improved Accuracy for Calibrated Mass Distribution Measurements of Bimetallic Nanoparticles

May 23, 2022
Author(s)
Kaleb Duelge, George Mulholland, Antonio Montoro Bustos, Michael Zachariah, Michael Zachariah, John Pettibone
Implementation of hybrid nanoparticles (HNPs), consisting of two different metal components, into applied systems has been hindered by an incomplete understanding of structural and chemical properties responsible for their enhanced, yet inconsistent

Reference Materials for MS-based Untargeted Metabolomics and Lipidomics: A Review by the Metabolomics Quality Assurance and Quality Control Consortium (mQACC)

April 9, 2022
Author(s)
Katrice Lippa, William Davis, Christina Jones, Tracey Johnston, Juan Aristizabal-Henao, Richard Beger, John Bowden, Corey Broeckling, Chris Beecher, Warwick Dunn, Roberto Flores, Goncalo Gouveia, Thomas Hartung, Matthew Lewis, Ioanna Ntai, Andrew Percy, Dan Raftery, Jinchun Sun, Georgios Theodoridis, Fariba Tayyari, Federico Torta, Candice Ulmer, Baljit Ubhi
Introduction The metabolomics quality assurance and quality control consortium (mQACC) is enabling the identification, development, prioritization and promotion of suitable reference materials (RMs) to be used in quality assurance (QA) and quality control
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