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Displaying 151 - 175 of 184

Simultaneous Determination of Inorganic Mercury, Methylmercury, and Total Mercury Concentrations in Cryogenic Fresh-Frozen and Freeze-dried Biological Reference Materials

October 1, 2007
Author(s)
David Point, William C. Davis, J. I. Garcia Alonso, Mathilde Monperrus, Steven J. Christopher, O.F. X. Donard, Paul R. Becker, Stephen A. Wise
… 202MeHg solutions. A dominant methylation reaction (9.1-11.4%) was observed in freeze-dried materials (FD) with almost … apparent demethylation yield was estimated between 12.5-18.4% in fresh-frozen (FF) materials. These difference of …

The New NIST Atomic Spectra Database (1999)

March 1, 1999
Author(s)
Daniel E. Kelleher, William C. Martin, Wolfgang L. Wiese, J Sugar, Jeffrey R. Fuhr, Karen J. Olsen, Arlene Musgrove, Peter J. Mohr, Joseph Reader, G R. Dalton
… 900 spectra, with about 70 000 energy levels as well as 91 000 lines ranging from about 1 Angstrom to 200 …

Prey-size plastics are invading larval fish nurseries

November 11, 2019
Author(s)
Jamison Gove, Jonathan Whitney, Margaret McManus, Joey Lecky, Felipe Carvalho, Jennifer Lynch, Jiwei Li, Philipp Neubauer, Jana Phipps, Donald Kobayashi, Karla Balagso, Emily Contreras, Mark Manuel, Mark Merrifield, Jeffrey Polovina, Gregory Asner, Jeffrey Maynard, Gareth Williams
… but contained 42.3% of all neustonic larval fish and 91.8% of all floating plastics. The ingestion of plastics by …

Liquid chromatography tandem mass spectrometry for the quantitation of steroid hormone profiles in blubber from stranded humpback whales (Megaptera novaeangliae)

July 30, 2019
Author(s)
Greta Dalle Luche, Susan Bengston Nash, John Kucklick, Fletcher M. Mingramm, Ashley Russell
… concentrations and quantified. Repeatability ranged from 4.32 % to 17.4 % relative standard deviation. Measurement accuracy was … range (cortisol < 14.1 ng/g, progesterone < 9.91 ng/g). Estrone concentrations were quantified in female …

Interlaboratory study to validate a STR profiling method for intraspecies identification of mouse cell lines

June 20, 2019
Author(s)
Jamie L. Almeida, Aleksandra Dakic, Karin Kindig, Maikan Kone, Deborah L. Letham, Scott Langdon, Ruth Peat, Jayamalini Holding-Pillai, Erin Hall, Mark Ladd, Megan Shaffer, Heath Berg, Jinliang Li, Georges Wigger, Steven P. Lund, Carolyn R. Steffen, Barbara Fransway, Bob Geraghty, Manuela Natoli, Beth Bauer, Susanne M. Gollin, Dale Lewis, Yvonne A. Reid
… in allele calls among the discordant samples was above 91%. The STR profiles, including electropherogram images, for …

Demonstration of Athena X-IFU Compatible 40-Row Time-Division-Multiplexed Readout

March 19, 2019
Author(s)
Malcolm S. Durkin, Joseph S. Adams, Simon R. Bandler, James A. Chervenak, Saptarshi Chaudhuri, Carl S. Dawson, Edward V. Denison, William B. Doriese, Shannon M. Duff, F. M. Finkbeiner, C. T. FitzGerald, Joseph W. Fowler, Johnathon D. Gard, Gene C. Hilton, Kent D. Irwin, Young I. Joe, R. L. Kelley, Caroline A. Kilbourne, A. R. Miniussi, Kelsey M. Morgan, Galen C. O'Neil, Christine G. Pappas, F. S. Porter, Carl D. Reintsema, David A. Rudman, Kazuhiro Sakai, Stephen J. Smith, Robert W. Stevens, Daniel S. Swetz, Paul Szypryt, Joel N. Ullom, Leila R. Vale, N. Wakeham, Joel C. Weber, B. A. Young
… TDM measurements have best-fit energy resolution of (1.91 +/- 0.01) eV for the Al Kα complex (1.5 keV), (2.10 +/- 0.02) eV for Ti Kα (4.5 keV), (2.23 +/- 0.02) eV for Mn Kα (5.9 keV), (2.40 +/- …

Influence of Aggregate Characteristics on Concrete Performance

May 16, 2017
Author(s)
Dale P. Bentz, Scott Z. Jones, Paul E. Stutzman, Joshua Arnold, Michael Boisclair, Paul Rothfeld, Jussara Tanesi, Haejin Kim, Jose Munoz, Mengesha Beyene
… and electrical properties were measured at ages to 91 d and microstructural examinations were conducted to …

Effect of Tooth-Bound Fluoride on Enamel Demineralization/Remineralization in Vitro

May 1, 1999
Author(s)
Shozo Takagi, N S. Liao, Laurence C. Chow
… phosphate fluoride (APF) group that received 5 cycles of a 4 min treatment with APF gel followed by immersion in the RS … dihydrate (DCPD) -APF group that received 5 cycles of a 4-min pH 2.1 DCPD-forming solution followed by 4-min APF gel … in the three groups were (mean standard deviation; n = 6) 91.2 12.3 m for the control group, 41.3 10.1 m for the APF …

Fire Resilience of a Steel-Concrete Composite Floor System: Full-Scale Experimental Evaluation for U.S. Prescriptive Approach with a 2-Hour Fire-Resistance Rating (Test #1)

October 5, 2021
Author(s)
Lisa Choe, Selvarajah Ramesh, Xu Dai, Matthew Hoehler, Matthew Bundy, Rodney A. Bryant, Brian Story, Anthony R. Chakalis, Artur A. Chernovsky
The National Institute of Standards and Technology is currently conducting a series of large compartment fire tests to investigate the behavior and fire-induced failure mechanisms of the full-scale composite floor systems situated in the two-story and two

Practical CFD Simulations of Wind Tunnel Tests

December 1, 2013
Author(s)
Dilip K. Banerjee, Scott Hemley, Randall J. McDermott, Donghun Yeo, Marc L. Levitan
… building (prototype dimensions: 9.1 m (L) × 13.7 m (B) × 4 m (H) ). Pressure taps or ports along four lines on the …

Time-Resolved Infrared Spectroscopy of an [FeFe]-Hydrogenase Model Compound

March 26, 2012
Author(s)
Edwin J. Heilweil
… Our research involves studying Fe2(mu-S2C2H4)(CO)4(PMe3)2 and related mimics for the enzyme chromophore using … pump, infrared probe spectroscopy.[1] Fe2(mu-S2C2H4)(CO)4(PMe3)2 was dissolved in acetonitrile and n-heptane and … intensities with an average time constant of 360 ± 91 ps. The remaining signals persist out to the microsecond …
Displaying 151 - 175 of 184
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