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Displaying 21001 - 21025 of 73830

NIST Micronutrients Measurement Quality Assurance Program Summer 2009 Comparability Studies: Results for Round Robin LXVI Fat-Soluble Vitamins and Carotenoids in Human Serum and Round Robin 31 Ascorbic Acid in Human Serum

August 5, 2013
Author(s)
David L. Duewer, Jeanice M. Brown Thomas
The National Institute of Standards and Technology coordinates the Micronutrients Measurement Quality Assurance Program (MMQAP) for laboratories that measure fat- and water-soluble vitamins and carotenoids in human serum and plasma. This report describes

NIST Micronutrients Measurement Quality Assurance Program Winter 2007 Comparability Studies: Results for Round Robin LXI Fat-Soluble Vitamins and Carotenoids in Human Serum and Round Robin 26 Ascorbic Acid in Human Serum

August 5, 2013
Author(s)
David L. Duewer, Jeanice M. Brown Thomas
The National Institute of Standards and Technology coordinates the Micronutrients Measurement Quality Assurance Program (MMQAP) for laboratories that measure fat- and water-soluble vitamins and carotenoids in human serum and plasma. This report describes

NIST Micronutrients Measurement Quality Assurance Program Winter 2008 Comparability Studies: Results for Round Robin LXIII Fat-Soluble Vitamins and Carotenoids in Human Serum and Round Robin 28 Ascorbic Acid in Human Serum

August 5, 2013
Author(s)
David L. Duewer, Jeanice M. Brown Thomas
The National Institute of Standards and Technology coordinates the Micronutrients Measurement Quality Assurance Program (MMQAP) for laboratories that measure fat- and water-soluble vitamins and carotenoids in human serum and plasma. This report describes

NIST Micronutrients Measurement Quality Assurance Program Winter 2009 Comparability Studies: Results for Round Robin LXV Fat-Soluble Vitamins and Carotenoids in Human Serum and Round Robin 30 Ascorbic Acid in Human Serum

August 5, 2013
Author(s)
David L. Duewer, Jeanice M. Brown Thomas
The National Institute of Standards and Technology coordinates the Micronutrients Measurement Quality Assurance Program (MMQAP) for laboratories that measure fat- and water-soluble vitamins and carotenoids in human serum and plasma. This report describes

A Microporous Metal-Organic Framework with Both Open Metal and Lewis Basic Pyridyl Sites for High C 2 H 2 and CH 4 Storage at Room Temperature

August 4, 2013
Author(s)
Xingtang Rao, Jianfeng Cai, Jiancan Yu, Yabing He, Chuande Wu, Wei Zhou, Taner N. Yildirim, Banglin Chen, Guodong Qian
A new microporous metal-organic framework Cu 2(PDDI) (ZJU-5; H 4PDDI = 5,5'-(pyridine-2,5-diyl)diisophthalic acid) was solvothermally synthesized and structurally characterized. With open metal sites, Lewis basic pyridyl sites and suitable pore space, the

Uncertainties in Steel Temperatures during Fire

August 4, 2013
Author(s)
Dilip K. Banerjee
In order to determine the fire resistance of steel members, steel temperatures must be estimated with a high confidence. There can be considerable uncertainty in temperatures of both protected and unprotected steels during fire exposure. This is due to

Polychromatic energy-dispersive neutron diffraction at a continuous source

August 3, 2013
Author(s)
Jason M. Simmons, Jeremy Cook, Richard M. Ibberson, Charles Majkrzak, Dan Neumann
A design for a continuous source, polychromatic beam powder neutron diffractometer based on an energy-dispersive detection methodology is proposed. Such an instrument would offer significantly higher incident neutron flux, with an attendant increase in

NIST Micronutrients Measurement Quality Assurance Program Summer 2010 Comparability Studies: Results for Round Robin LXVIII Fat-Soluble Vitamins and Carotenoids in Human Serum and Round Robin 33 Ascorbic Acid in Human Serum

August 2, 2013
Author(s)
David L. Duewer, Jeanice M. Brown Thomas
The National Institute of Standards and Technology coordinates the Micronutrients Measurement Quality Assurance Program (MMQAP) for laboratories that measure fat- and water-soluble vitamins and carotenoids in human serum and plasma. This report describes

NIST Micronutrients Measurement Quality Assurance Program Summer 2011 Comparability Studies Results for Round Robin LXX Fat-Soluble Vitamins and Carotenoids in Human Serum and Round Robin 35 Ascorbic Acid in Human Serum

August 2, 2013
Author(s)
David L. Duewer, Jeanice M. Brown Thomas
The National Institute of Standards and Technology coordinates the Micronutrients Measurement Quality Assurance Program (MMQAP) for laboratories that measure fat- and water-soluble vitamins and carotenoids in human serum and plasma. This report describes

NIST Micronutrients Measurement Quality Assurance Program Winter 2010 Comparability Studies: Results for Round Robin LXVII Fat-Soluble Vitamins and Carotenoids in Human Serum and Round Robin 32 Ascorbic Acid in Human Serum

August 2, 2013
Author(s)
David L. Duewer, Jeanice M. Brown Thomas
The National Institute of Standards and Technology coordinates the Micronutrients Measurement Quality Assurance Program (MMQAP) for laboratories that measure fat- and water-soluble vitamins and carotenoids in human serum and plasma. This report describes

NIST Micronutrients Measurement Quality Assurance Program Winter 2011 Comparability Studies: Results for Round Robin LXIX Fat-Soluble Vitamins and Carotenoids in Human Serum and Round Robin 34 Ascorbic Acid in Human Serum

August 2, 2013
Author(s)
David L. Duewer, Jeanice M. Brown Thomas
The National Institute of Standards and Technology coordinates the Micronutrients Measurement Quality Assurance Program (MMQAP) for laboratories that measure fat- and water-soluble vitamins and carotenoids in human serum and plasma. This report describes

Signatures of nonlinear cavity optomechanics in the weak coupling regime

August 2, 2013
Author(s)
John D. Teufel, Kjetil Borkje, Andeas Nunnenkamp, Steven Girvin
We identify signatures of the intrinsic nonlinear interaction between light and mechanical motion in cavity optomechanical systems. These signatures are observable even when the cavity linewidth exceeds the optomechanical coupling rate. A strong laser

Statistical Analysis of Single PPTA Fibers

August 2, 2013
Author(s)
Nathanael A. Heckert
Discuss statistical methods used for analysis of single fiber tensile strength tests. Kernel density plots and quantile-quantile plots were used to graphically analyze the data. Fiber strength was modeled using 2-parameter Weibull, 3-parameter Weibull

A streamlined, high-volume particle impactor for trace chemical analysis

August 1, 2013
Author(s)
Matthew E. Staymates, Jessica L. Staymates, Jerold Bottiger, Deborah Schepers
The design and characterization of a streamlined, high-volume particle impactor used for trace chemical analysis is presented. The impactor has a single round jet and is designed to operate at a flow rate of 1000 LPM. Computational fluid dynamics was used

Dirac fermion heating, current scaling, and direct insulator-quantum Hall transition in multi-layer epitaxial graphene

August 1, 2013
Author(s)
Randolph E. Elmquist, Fan-Hung Liu, Chang-Shun Hsu, Chiashain Chuang, Tak-Pong Woo, Lung-I Huang Huang, Chi-Te Laing, Yasuhiro Fukuyama, Yanfei Yang
We have performed magnetotransport measurements on multi-layer epitaxial graphene. By increasing the driving current I through our graphene devices while keeping the bath temperature fixed, we are able to study Dirac fermion heating and current scaling in
Displaying 21001 - 21025 of 73830
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