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NIST Authors in Bold

Displaying 726 - 750 of 2084

Frequency-agile, rapid scanning cavity ring-down spectroscopy (FARS-CRDS) measurements of the (30012) --(00001) near-infrared carbon dioxide band

April 3, 2015
Author(s)
David A. Long, Szymon S. Wojtewicz, Charles E. Miller, Joseph T. Hodges
We present new high accuracy measurements of the (30012)←(00001) CO¬2 band near 1575 nm recorded with a frequency-agile, rapid scanning cavity ring-down spectrometer. The resulting spectra were fit with the partially correlated, quadratic-speed-dependent

Development of Urine Standard Reference Materials for Metabolites of Organic Chemicals Including Polycyclic Aromatic Hydrocarbons, Phthalates, Phenols, Parabens, and Volatile Organic Compounds

April 1, 2015
Author(s)
Michele M. Schantz, Bruce A. Benner Jr., Nathanael A. Heckert, Lane C. Sander, Katherine E. Sharpless, Stacy S. Schuur, Stephen A. Wise
Two new Standard Reference Materials (SRMs), SRM 3672 Organic Contaminants in Smokers’ Urine (Frozen) and SRM 3673 Organic Contaminants in Non-Smokers’ Urine (Frozen), have been developed in support of studies for assessment of human exposure to select

NGD Cold Neutron Prompt Gamma-ray Activation Analysis Spectrometer at NIST

April 1, 2015
Author(s)
Rick L. Paul, Dagistan NMN Sahin, Jeremy C. Cook, Christoph W. Brocker, Richard M. Lindstrom, Donna J. O'Kelly
A new instrument for cold neutron prompt gamma-ray activation analysis (CNPGAA) has been designed and constructed as part of the recent expansion of the cold neutron guide hall at the NIST Center for Neutron Research (NCNR). Located on neutron guide NGD

"Weighing" a Gas With Microwave and Acoustic Resonances

March 24, 2015
Author(s)
Keith A. Gillis, James B. Mehl, James W. Schmidt, Michael R. Moldover
With calibrations of large flow meters in mind, we established the feasibility of determining the mass Mof argon gas contained within a 0.3 m 3 commercially manufactured pressure vessel ("tank") with a relative uncertainty of u r(M) = 0.0015 at 0.6 MPa by

An approach for identification and determination of arsenic species in the extract of kelp

March 3, 2015
Author(s)
Lee L. Yu, Rolf L. Zeisler, Rabia Oflaz, Wei Chao, Junting Tong, Haixia Bao, Jun Wang
The National Institute of Standards and Technology is developing a kelp standard reference material (SRM) in support of dietary supplement measurements. Edible seaweeds such as kelp and laver consumed as diet or dietary supplement contain tens of mg/kg

High resolution analysis of the nu1 and nu5 bands of phosgene 35Cl2CO and 35Cl37ClCO

March 2, 2015
Author(s)
Walter J. Lafferty, Jean-Marie Flaud, F. Kwabia Tchana, L. Manceron
Fourier transform spectra of phosgene (Cl2CO) have been recorded in the 11.75 μm and 5.47 μm spectral regions using a Bruker IFS125HR spectrometer at resolutions of 0.00102 cm-1 and 0.0015 cm-1 respectively leading to the observation of the ν5 and ν1

The NIST Traceable Reference Material Program for Gas Standards

February 26, 2015
Author(s)
William D. Dorko, Michael E. Kelley, Franklin R. Guenther
A program is described by which the concentration of commercially produced gas mixtures may be related to gaseous primary standards or measurement systems maintained by the National Institute of Standards and Technology (NIST). The gaseous mixtures

Application of NMR-based Metabolomics for Environmental Assessment in the Great Lakes using Zebra Mussel (Dreissena polymorpha) polymorpha)

February 21, 2015
Author(s)
Miki Watanabe, Katherine Meyer, Tyler Jackson, Tracey Johnston, Ed Johnson, Dan Bearden
Zebra mussel, Dreissena polymorpha, in the Great Lakes is being monitored as a bio-indicator organism for environmental health effects by the National Oceanic and Atmospheric Administration's Mussel Watch program. In order to monitor the environmental

Near-Field Asymmetries in Plasmonic Resonators

February 12, 2015
Author(s)
Vladimir Aksyuk, Basudev Lahiri, Glenn Holland, Andrea Centrone
Surface-enhanced infrared absorption (SEIRA) spectroscopy exploits the locally enhanced field surrounding plasmonic metamaterials to increase the sensitivity of infrared spectroscopy. Light polarization and incident angle are important factors for exciting

Understanding the blue color in antique mosaic mirrored glass from the Temple of the Emerald Buddha, Thailand

February 4, 2015
Author(s)
Bruce D. Ravel, Wantana Klysubun, Christoph Hauzenberger, Prapong Klysubun, Yuying Huang, Weeraya Wongtepa, Panidtha Sombunchoo
Two samples of the blue glass produced in the middle 19th century from the Temple of the Emerald Buddha in Bangkok, Thailand, were studied in order to understand the origin of its blue color. The oxide components and trace elements are quantitatively

Rapid DNA melting analyses using a microfabricated electrochemical platform

January 1, 2015
Author(s)
Zuliang Shen, Stephen Semancik, Herman O. Sintim
A new microscale platform is reported which is based on microfabrication methods that integrate thermal control and multi-electrode components to enable rapid temperature-dependent electrochemical measurements on small volume fluid samples. We demonstrate

Reevaluation of Neutron Flux Characterization Parameters for NIST RT-2 Facility

December 31, 2014
Author(s)
Dagistan Sahin, Vladimir Radulovic, Richard M. Lindstrom, Andrej Trkov
It has been difficult to characterize the thermal to epithermal neutron flux ratio (f) and the measure of the nonideal epithermal neutron flux distribution (α) for the RT-2 pneumatic rabbit facility at the NIST National Bureau of Standards Reactor (NBSR)
Displaying 726 - 750 of 2084
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