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Search Publications

NIST Authors in Bold

Displaying 13151 - 13175 of 13227

New NIST-Certified Length Microscale

January 1, 1996
Author(s)
James E. Potzick
… The National Institute of Standards and Technology is developing a simple one-dimension certified … it consists of symmetrical nested linear pitch patterns in decade ranges. The patterns are printed in etched chrome on a quartz microscope slide, using …

An Electrically Conducting Metal-Organic Framework Having Two Orthogonal Transport Pathways

December 12, 2024
Author(s)
Shiyu Zhang, Weikang Zhang, Ashok Yadav, Md. Ansari, Jonathan Cromer, Jorge Moreno, Gavin McCarver, Wei Zhou, Sourav Saha
… Owing to their diverse potential applications in electronics and energy technologies, electrically … of their unique abilities to simultaneously support in-plane (through bonds) and out-of-plane (through space) charge transport in two orthogonal directions. However, the large disparities …

Concordant inter-laboratory derived concentrations of ceramides in human plasma reference materials via authentic standards

October 3, 2024
Author(s)
Tracey Schock, Christina Jones, Federico Torta, Nils Hoffmann, Bo Burla, Irina Alecu, Makoto Arita, Takeshi Bamba, Steffany A.L. Bennett, Justine BERTRAND-MICHEL, Britta Brugger, Monica Molina, Maria Dolores Camacho Munoz, Antonio Checa, Michael Chen, Michelle Cinel, Benoit COLSCH, Cristina Coman, Bebiana Da Costa Sousa, Alex Dickens, Maria Maria, Finnur Freyr Eiriksson, Hector Gallart-Ayala, Mohan Ghorasaini, Martin Giera, Xue Guan, Mark Haid, Thomas Hankemeier, Amy Harms, Marcus Horing, Michal Holcapek, Thorsten Hornemann, Chunxiu Hu, Andreas Hulsmeier, Julijana Ivanisevic, Harald Kofeler, Sin Man Lam, Jong Cheol Lee, Gerhard Liebisch, Andrea F Lopez-Clavijo, Malena Manzi, Peter Meikle, Maria Monge, Sneha Muralidharan, Anna Nicolaou, Valerie O'Donnell, Matej Oresic, Arvind Ramanathan, Daisuke Saigusa, Heidi Schwartz-Zimmermann, Guanghou Shui, Masatomo Takahashi, Margret Thorsteinsdottir, Anthony Tournadre, Hiroshi Tsugawa, Victoria Tyrrell, Grace van der Gugten, Michael Wakelam, Craig Wheelock, Denise Wolrab, Guowang Xu, John Bowden, Kim Ekroos, Robert Ahrends, Markus Wenk
… In this community effort, we compared measurements between 34 … to quantify by mass spectrometry four ceramide species in the NIST human blood plasma Standard Reference Material … single-point and multi-point calibrations, respectively. In SRM 1950 these concentration values are 0.1206 ± 0.0038 …

Determination of 11 Cannabinoids in Hemp Plant and Oils by Liquid Chromatography and Photodiode Array Detection

January 21, 2022
Author(s)
Walter Brent Wilson, MARYAM ABDUL-RAHMAN
… GC is limited because THCA decarboxylates to Δ9-THC in the high temperatures of the GC inlet with conversion … from 50 % to 70 %. The National Institute of Standards and Technology (NIST) has recently established an integrated … methods for screening bulk hemp and/or marijuana samples. In addition, while also permitting their potential …

Report on High Energy Arcing Fault Experiments - Experimental Results from Low Voltage Switchgear Enclosures

December 29, 2021
Author(s)
Gabriel Taylor, Anthony D. Putorti Jr., Scott Bareham, Christopher U. Brown, Wai Cheong Tam, Edward Hnetkovsky, Andre Thompson, Michael Selepak, Philip Deardorff, Kenneth Hamburger, Nicholas Melly, Kenneth Miller
… data were recorded for each experiment and documented in this report. This report covers experiments performed on … results will be used to support potential improvements in fire probabilistic risk assessment (PRA) methods. The … from the NRC, the National Institute of Standards and Technology (NIST), Sandia National Laboratories (SNL) and …

Comparing Two Analytical Workflows for Seized Drug Analysis of Synthetic Cannabinoids, Cathinones, and Opioids

October 25, 2021
Author(s)
Edward Sisco, Amber Burns, Elizabeth Schneider, Charles R. Miller, IV, Laurel Bobka
… burdens. These new solutions can range from simple changes in existing methods to better distinguish isomers to adoption … will address the challenges a laboratory is facing. In this study, we attempt to compare, qualitatively and … for seized drug analysis to a new, experimental workflow in order to better understand the potential benefits and …

Comparing Two Analytical Workflows for Seized Drug Analysis of Synthetic Cannabinoids, Cathinones, and Opioids

October 25, 2021
Author(s)
Edward Sisco, Amber Burns, Elizabeth Schneider, Charles R. Miller, IV, Laurel Bobka
… burdens. These new solutions can range from simple changes in existing methods to better distinguish isomers to adoption … will address the challenges a laboratory is facing. In this study, we attempt to compare, qualitatively and … for seized drug analysis to a new, experimental workflow in order to better understand the potential benefits and …

Comparing Two Analytical Workflows for Seized Drug Analysis of Synthetic Cannabinoids, Cathinones, and Opioids

October 25, 2021
Author(s)
Edward Sisco, Amber Burns, Elizabeth Schneider, Charles R. Miller, IV, Laurel Bobka
… burdens. These new solutions can range from simple changes in existing methods to better distinguish isomers to adoption … will address the challenges a laboratory is facing. In this study, we attempt to compare, qualitatively and … for seized drug analysis to a new, experimental workflow in order to better understand the potential benefits and …

Comparing Two Analytical Workflows for Seized Drug Analysis of Synthetic Cannabinoids, Cathinones, and Opioids

October 25, 2021
Author(s)
Edward Sisco, Amber Burns, Elizabeth Schneider, Charles R. Miller, IV, Laurel Bobka
… burdens. These new solutions can range from simple changes in existing methods to better distinguish isomers to adoption … will address the challenges a laboratory is facing. In this study, we attempt to compare, qualitatively and … for seized drug analysis to a new, experimental workflow in order to better understand the potential benefits and …

Vitamin D Standardization Program (VDSP) intralaboratory study for the assessment of 25-hydroxyvitamin D assay variability and bias

May 17, 2021
Author(s)
Johanna Camara, Stephen Wise, Christopher T. Sempos, Pierre Lukas, Caroline LeGoff, Stephanie Peeters, Carolyn Burdette, Federica Nalin, Grace Hahm, Ramon Durazo-Arvizu, Adam J. Kuszak, Joyce M. Merkel, E. Cavalier
… of serum total 25-hydroxyvitamin D [25(OH)D] was conducted in 2017 as part of the Vitamin D Standardization Program … study consisted of the evaluation of 13 assays in a single laboratory including 11 different immunoassays … were analyzed at the National Institute of Standards and Technology (NIST) using reference measurement procedures to …

Quantitative Analysis of Zirconium Alloys Using Borate Fusion and Wavelength Dispersive X-Ray Fluorescence Spectrometry

January 26, 2021
Author(s)
John R. Sieber, Anthony F. Marlow, Rick L. Paul, Charles A. Barber, Laura J. Wood, Lee L. Yu, Alaina Rieke, Amy Kutnerian, Jessica McCandless, Candace Wallace
… The National Institute of Standards and Technology (NIST) uses borate fusion, wavelength dispersive … calibrations enable very low overall uncertainties in final results. This approach is applied to zirconium … of high enough quality to be used to certify elements in SRMs in conjunction with results from one or more …

Low-Field Magnetic Resonance Imaging of Roots in Intact Clayey and Silty Soils

July 1, 2020
Author(s)
George Bagnall, Cristine` Morgan, Matthew Rosen, Mark Conradi, Stephen Altobelli, Dean Kuethe, Haly Neely, Neha Koonjoo, Bo Zhu, Karl Stupic, John Mullet, Brock Weers, Eiichi Fukushima, William Rooney
… robust method to non-invasively visualize root morphology in natural soils has been hampered by the opaque, physical, and structural properties of soils. In this work we describe a novel technology, low field magnetic resonance imaging (LF-MRI), … Low-Field Magnetic Resonance Imaging of Roots in Intact Clayey and Silty Soils …

Development of Standard Reference Material (SRM) 2973 Vitamin D Metabolites in Frozen Human Serum (High Level)

July 24, 2017
Author(s)
Susan Tai, Michael Nelson, Brian Lang, Karen W. Phinney, Lane C. Sander, James H. Yen, J. M. Betz, Christopher T. Sempos, Stephen Wise
… The National Institute of Standards and Technology (NIST), in collaboration with the National Institutes of Health, … Reference Material (SRM), SRM 2973 Vitamin D Metabolites in Frozen Human Serum (High Level). SRM 2973 was designed to … Reference Material (SRM) 2973 Vitamin D Metabolites in Frozen Human Serum (High Level) …

Flame Retardant Emissions from Spray Polyurethane Foam Insulation

October 17, 2016
Author(s)
Dustin G. Poppendieck, Angelica A. Connor, Matthew P. Schlegel, Adam P. Blickley
… The desire to build more energy efficient homes in the United States has led to the expansion of the … experiments may not directly predict TCPP concentrations in buildings without consideration of material mass transfer … in the furniture-free National Institute of Standards and Technology (NIST) Net Zero Energy Residential Test Facility …

A Hyperspectral Image Projector for Hyperspectral Imagers

September 3, 2007
Author(s)
Joseph P. Rice, Steven W. Brown, Jorge E. Neira, Robert R. Bousquet
… HIP, based on the same digital micromirror arrays used in commercial digital light processing (DLP) displays, is … minerals, etc), and a second micromirror array, optically in series with the first, projects any combination of these … imager working in the visible spectral range. The technology is readily extendable to the ultraviolet and …

Thin Films for Microelectronics and Photonics: Physics, Mechanics, Characterization, and Reliability

January 1, 2007
Author(s)
David T. Read, Alex Volinsky
… products. Conducting films form the interconnect layers in all chips, and dielectric films provide electrical … testing procedures for bulk materials as described in, e.g., ASTM Standards. Accordingly, our upper limit of … progressed well into the nanoscale at present, and MEMS technology is evolving the ability to produce nano electro …

Comparison between frequency standards in Europe and the USA at the 10 -15 uncertainty level

February 1, 2006
Author(s)
Joseph Achkar, Andreas Bauch, R Dach, R Hlavac, Luca Lorini, Thomas E. Parker, G. Petit, Dirk Piester, P Uhrich, K Szymaniec
… Ferraris (IEN), National Institute of Standards and Technology (NIST), National Physical Laboratory (NPL), … campaign of selected frequency references maintained in their laboratories during about 25 days in October/November 2004. Active hydrogen maser reference …

Determination of Polybrominated Diphenyl Ethers in Indoor Dust Standard Reference Materials

February 1, 2006
Author(s)
H M. Stapleton, T. Harner, M. Shoeib, Jennifer M. Lynch, Michele M. Schantz, Stefan D. Leigh, Stephen A. Wise
… ethers (PBDEs) have been measured for the first time in three different indoor dust Standard Reference Materials … (SRMs) prepared by the National Institute of Standards and Technology (NIST). Two of these SRMs (2583 and 2584) have … hydrocarbons, pesticides and polychlorinated biphenyls) in 2005. Certified concentrations are available for 16 …

Spectral Characterization of HST Calibration Lamps - New Pt/Ct-Ne Line Catalogues and Ageing Test

June 25, 2004
Author(s)
F Kerber, Michael R. Rosa, Craig J. Sansonetti, Joseph Reader, Gillian Nave, P Bristow, M Fiorentio, G Lercher
… First, we have measured the spectra of Pt/Cr-Ne lamps in order to obtain accurate and reliable wavelengths for all … were performed at the National Institute of Standards and Technology (NIST) usoing the 10.7 m normal incidence … a najor impact on the wavelength calibration, particularly in the near UV. The new line list is being used in …

Analytical Advances in the SEM

January 1, 2003
Author(s)
J H. Scott
… it excites characteristic x-rays from the elements in the sample, allowing a quantitative chemical analysis to be performed at each pixel in the scanned raster. The spatial resolution of this … of electron-beam microanalysis, recent advances in the technology of x-ray detectors promise to advance the …

A New Usability Standard and What It Means to You

June 1, 2002
Author(s)
Jean C. Scholtz, Emile L. Morse
… from the Industry USability Reporting (IUSR) Project begun in 1997, facilitated by the National Institute of Standards and Technology (www.nist.gov/iusr). The IUSR group includes … evaluation. This information includes the tasks used in the evaluation, the testing environment including …

Towards a Global Agenda for Fire Research

December 1, 2001
Author(s)
J E. Snell
… issues concerning the advance of fire safety engineering in the hos's country. Nine members from 7 nations participated in the 13th meeting, which took place in Taipei, in October … William Pitts of the National Institute of Standards and Technology (NIST), on heat flux measurement. (I will say a …
Displaying 13151 - 13175 of 13227
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