U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Search Publications

NIST Authors in Bold

Displaying 551 - 569 of 569

Accuracy, repeatability and interplatform reproducibility measurements of T 1 quantification methods used for DCE-MRI: results from a multicenter phantom study.

August 16, 2017
Author(s)
Octavia Bane, Stefanie J. Hectors, Mathilde Wagner, Lori L. Arlinghaus, Madhava P. Aryal, Yue Cao, Thomas L. Chenevert, Fiona Fennessy, Wei Huang, Nola M. Hylton, Jayashree Kalpathy-Cramer, Katy Keenan, Dariya I. Malyarenko, Robert V. Mulkern, David C. Newitt, Stephen E. Russek, Karl Stupic, Michael A. Boss
Purpose: To determine the in vitro accuracy, test-retest repeatability, and interplatform reproducibility of T 1 quantification protocols used for dynamic contrast-enhanced MRI at 1.5 and 3 T. Methods: A T 1 phantom with 14 samples was imaged at eight

Broad bandwidth trace gas and standoff detection with infrared frequency comb sources

March 11, 2012
Author(s)
Nathan R. Newbury, Alexander M. Zolot, Esther Baumann, Fabrizio R. Giorgetta, Florian B. Adler, Ian R. Coddington, Kevin O. Knabe, Lora L. Nugent-Glandorf, Paul A. Williams, Scott A. Diddams, Tyler W. Neely
… we create a tunable mid-infrared frequency comb source (2.5-4.5 micron). Trace-gas spectroscopy is performed with … metal surfaces and the spectroscopic signatures in the 3.2-3.4 micron region are acquired from scattered light. …

Impact of screening for HPV-positive oropharyngeal cancers: A microsimulation-based modeling study

February 6, 2025
Author(s)
Rebecca Landy, Gregory Haber, Barry Graubard, Carole Fakhry, Nicole Campos, Emily Burger, Li Cheung, Hormuzd Katki, Maura Gillison, Anil Chaturvedi
… diagnosed HPV-positive oropharyngeal cancers and 32,009 deaths would occur through age 84 years. Assuming very … vs. 50.6%). Cancer mortality would also be reduced by 36.2%, with a gain of 106,000 life-years. Annual screening would …

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
… datasets utilizing either triple quadrupole-based (n=32) or high resolution (n=6) mass analyzers with different …

Structural and Dynamical Properties of Potassium Dodecahydro-Monocarba-Closo-Dodecaborate: KCB 11 H 12

August 20, 2020
Author(s)
Mirjana Dimitrievska, Hui Wu, Vitalie Stavila, Olga A. Babanova, Roman V. Skoryunov, Alexei V. Soloninin, Wei Zhou, Benjamin Trump
… transition, anion reorientational jump rates change from 6.2×10 6 s -1 in the low-T phase (332 K) to 2.6×10 10 s -1 in the high-T phase (341 K). In tandem, K + … across the transition, yielding a high-T phase value of 3.2×10^-4^ S cm -1 at 361 K. Yet, this is still about one to …

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
… related methods. SRM 2973 has a certified value of 98.4 ± 2.1 nmol/L for 25(OH)D3 and reference values of 1.59 ± 0.05 … and SRM 972a Level 1 (6.38 nmol/L ± 0.23 nmol/L), Level 2 (3.39 nmol/L ± 0.12 nmol/L), Level 3 (3.88 nmol/L ± 0.013 nmol/L), and Level 4 (6.32 nmol/L ± 0.22 nmol/L). These two SRMs are the first …

Illuminating the Role of Agglomerates on Critical Physicochemical Properties of Amorphous Calcium Phosphate Composites

October 31, 2008
Author(s)
Justin N. O'Donnell, Joseph M. Antonucci, Drago Skrtic
… formulated with either as-made or milled ACP after 1, 2 and 3 mo of aqueous exposure. The photo-curable resin … (62.8 mass %), triethylene glycol dimethacrylate (23.2 mass %), 2-hydroxyethyl methacrylate (10.4 mass %) and … ACP composites approached the BFS of the copolymers (96 32), and was significantly higher than the BFS of as-made ACP …

Impacts of Alfalfa Nutrient Concentrate on Pellet Physical Attributes, Growth Performance, Metabolism and Nutritional Quality of Rainbow Trout, Oncorhynchus mykiss

November 8, 2024
Author(s)
Hu Chen, Patrick Blaufuss, Dong-Fang Deng, Fabio Casu, Emma Kraco, Brian Shepherd, Wendy Sealey, Aaron Watson, Matthew Digman, Deborah Samac
… levels (0%, 5%, 10%, 15%, and 20%) to replace fishmeal (32% in the 0% ANC diet) to achieve equal digestible protein … nutrients in rainbow trout (initial body weight , 18.0 ± 0.2 g). ANC inclusion did not impact the palatability and … metabolism of rainbow trout (initial body weight, 19.0 ± 0.2 g). While all fish exhibited substantial growth, fish fed …

Laboratory Tests of a Prototype Carbon Dioxide Ground-Source Air Conditioner

April 12, 2021
Author(s)
Harrison M. Skye, Wei Wu
… which was estimated to cause a COP penalty of (0 to 2) % for ELTs ranging (10 to 25) °C, and benefit of (0 to 5) … (10 to 39) °C the CO2 system cooling COP ranged (7.3 to 2.4), whereas the R410A system values ranged (6.1 to 3.2). At the 'standard' rating condition (ELT 25 °C), the CO2 …

Report on High Energy Arcing Fault Experiments: Experimental Results from Medium-Voltage Bus Duct and Switchgear Enclosures

September 15, 2023
Author(s)
Gabriel Taylor, Anthony D. Putorti Jr., Scott Bareham, Christopher U. Brown, Wai Cheong Tam, Ryan Falkenstein-Smith, Stephen Fink, Michael Heck, Edward Hnetkovsky, Nicholas Melly, Kenneth Hamburger, Kenneth Miller
… experiments were sponsored by member countries of the HEAF 2 international agreement under the auspices of the … experiments were performed between August 22 and September 2, 2022. The HEAF experiments were performed on two … s with fault currents ranging from approximately 28 kA to 32 kA. Real-time electrical operating conditions, including …

Potential Benefits of Smart Refrigerant Distributors

January 1, 2003
Author(s)
William V. Payne, Piotr A. Domanski
… fin evaporator's capacity dropped by as much as 41 % and 32 %, respectively, as the superheat was allowed to vary … over a portion of the coil could be recovered to within 2% of the original uniform airflow capacity by controlling …

Scattering by a Sphere with a Dielectric Half-Space or on Another Sphere

January 1, 2004
Author(s)
Egon Marx
… using integral equations derived from Maxwell's equations [2, 3], although the rotational symmetry can be used to … Society International Symposium, pp. 2198-2201, 1998.2. E. Marx, J. Math. Physics, vol. 23, pp. 1057-1065, 1982.3. E. Marx, IEEE Trans. Antennas Propagat., vol. 32, pp. 166-172, 1984.4. E. Marx, IEEE Trans. Antennas …
Displaying 551 - 569 of 569
Was this page helpful?