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Displaying 1626 - 1650 of 2084

Coincidence and anti-coincidence measurements in prompt gamma neutron activation analysis with pulsed cold neutron beams

April 1, 2001

Author(s)

Rolf L. Zeisler, George P. Lamaze, Huaiyu H. Chen-Mayer

Detection and Quantification Capabilities for 85 Kr with the NIST Low-Level Gas Counting System: Impacts of Instrumental and Environmental Backgrounds

April 1, 2001

Author(s)

Lloyd A. Currie, George A. Klouda

Among the most important, conservative geochemical tracers are the long-lived isotopes of krypton, 81Kr and 85Kr. Following a very brief review of the metrology and applications of these two radionuclides, we focus on the low-level measurement the 10.8

Development of Isotope Dilution Cold Vapor Inductively Coupled Plasma Mass Spectrometry and Its Application to the Certification of Mercury in NIST Standard Reference Materials

April 1, 2001

Author(s)

Steven J. Christopher, Stephen E. Long, M. S. Rearick, John D. Fassett

Dye Impregnation Method for Revealing Machining Crack Geometry

April 1, 2001

Author(s)

M Kanematsu, M. Sando, Lewis K. Ives, Ryna B. Marinenko, George D. Quinn

Identification and Quantification of 8,5'-Cyclo-2'-Deoxyadenosine in DNA by Liquid Chromatography/Mass Spectrometry

April 1, 2001

Author(s)

M. Dizdaroglu, Pawel Jaruga, H Rodriguez

Recent studies suggested that 8,5'-cyclo-2'-deoxyadenosine may play a role in diseases with defective nucleotide-excision repair. This compound is one of the major lesions formed in DNA by hydroxyl radical attack on sugar moiety of 2'-deoxyadenosine. It is

NIST-JANAF Thermochemical Tables. I. Ten Organic Molecules Related to Atmospheric Chemistry

April 1, 2001

Author(s)

O Dorofeeva, V Novikov, Dan A. Neumann

The structural, spectroscopic, and thermodynamic properties of ten organic molecules in the gas phase, including three peroxides and four carboxylic acids, have been reviewed. The calculation of the thermochemical tables involved the critical evaluation of

Sea Turtle Contaminants: A Review with Anotated Bibliography

April 1, 2001

Author(s)

Rebecca S. Pugh, Paul R. Becker

Uptake of oxygen in a coal standard reference material determined by fast (14-MeV) neutron activation analysis

April 1, 2001

Author(s)

W. D. James, Rolf L. Zeisler

Effective gas-phase deoxygenation of alcohols and ketones on iwon catalyst

March 9, 2001

Author(s)

Anzor I. Mikaia, Leonid S. Glebov, Alexey Yatsenko, Vladimir G. Zaikin, George A. Kliger, Sergai Loktev

A method of gas-phase deoxygenation of alcohols and ketones into hydrocarbons on iron catalyst at 600 K and 1-2.105 Pa is described.

Effects of Elastic-Electron Scattering on Measurements of Silicon Dioxide Film Thicknesses by X-Ray Photoelectron Spectroscopy

March 1, 2001

Author(s)

Cedric J. Powell, Aleksander Jablonski

It is now customary for the effects of elastic-electron scattering to be ignored in measurements of the thicknesses of overlayer films by X-ray photoelectron spectroscopy (XPS). It is known, however, that elastic scattering can cause the effective

Laser-Excited Hot-Electron Induced Desorption

March 1, 2001

Author(s)

John William Gadzuk

The history and technical highlights leading up to and following the publication of a classic NIST publication on the theory and experiments involving optical-laser induced desorption of adsorbed NO from metal surfaces is presented.

NIST Data Resources for Surface Analysis by X-Ray Photoelectron Spectroscopy and Auger Electron Spectroscopy

March 1, 2001

Author(s)

Cedric J. Powell, Aleksander Jablonski, A Naumkin, A Kraut-Vass, Joseph M. Conny, J R. Rumble

A description is given of data resources that are available from the National Institute of Standards and Technology (NIST) for x-ray photoelectron spectroscopy (XPS) and Auger-electron spectroscopy. NIST currently has three databases available: an XPS

Preparation and value assignment of Standard Reference Material 968c Fat-Soluble Vitamins, Carotenoids, and Cholesterol in Human Serum

March 1, 2001

Author(s)

Jeanice M. Brown Thomas, Margaret C. Kline, L M. Gill, James H. Yen, David L. Duewer, Lorna T. Sniegoski, Katherine E. Sharpless

Standardization of Cardiac Troponin I Assays: Round Robin of Ten Candidate Reference Materials

March 1, 2001

Author(s)

R. H. Christenson, S. H. Duh, F. S. Apple, G. S. Bodor, David M. Bunk, J. J. Dalluge, Mauro Panteghini, J. D. Potter, Michael J. Welch, A. H. Wu, S. E. Kahn

Certified Reference Materials for Microanalytical Methods

February 15, 2001

Author(s)

M. Rossbach, Rolf L. Zeisler

Proper Usage of Reference Materials

February 15, 2001

Author(s)

P. J. Jenks, Rolf L. Zeisler

Certification of the Methylmercury Content in SRM 2977 Mussel Tissue (Organic Contaminants and Trace Elements) and SRM 1566b Oyster Tissue

February 1, 2001

Author(s)

S. Tutschku, Michele M. Schantz, M. Horvat, M. Logar, H. Akagi, Hendrik Emons, M. S. Levenson, Stephen Wise

Current Projects of ISO Technical Committee 201 on Surface Chemical Analysis

February 1, 2001

Author(s)

Cedric J. Powell

An overview is given of current work projects of Technical Committee 201 on Surface Chemical Analysis of the International Organization for Standardization (ISO). ISTO/TC 201 has subcommittees for Auger electron spectroscopy (AES), secondary ion mass

Determination of Polychlorinated Dibenzo-p-Dioxin and Dibenzofuran Congeners in Air Particulate and Marine Sediment Standard Reference Materials (SRMs)

February 1, 2001

Author(s)

C. H. Chiu, R. Turle, G. Poole, B. Thibert, W. W. Brubaker, Michele M. Schantz, Stephen Wise

Determination of sulfur in fossil fuels by isotope dilution electrothermal vaporization inductively coupled plasma mass spectrometry

February 1, 2001

Author(s)

Lee L. Yu, William R. Kelly, John D. Fassett, Robert D. Vocke Jr.

Intensity Artifacts in Gas Phase FTIR Spectroscopy: Focus on the Aperture

February 1, 2001

Author(s)

S W. Sharpe, R L. Sams, T J. Johnson, Pamela M. Chu

Nonequilibrium Theory of Scanning Tunneling Spectroscopy via Adsorbate Resonances: Nonmagnetic and Kondo Impurities

February 1, 2001

Author(s)

M Plihal, John William Gadzuk

We report on a fully nonequilibrium theory of the scanning tunneling microscopy (STM) through resonances induced by impurity atoms adsorbed on metal surfaces. The theory takes into account the effect of the tunneling current and finite bias on the system

Characterization of BPSG films using Neutron Depth Profiling and Neutron/X-ray Reflectometry

January 29, 2001

Author(s)

Huaiyu H. Chen-Mayer, George P. Lamaze, Sushil K. Satija

Articles- Correlation of the Raman Spectra with the Thermal Conductivity of a Set of CVD Diamond Wefers

January 1, 2001

Author(s)

E S. Etz, A Feldman, Wilbur S. Hurst

Reported are the results of a Raman spectroscopic study of a set of chemical-vapor-deposited (CVD) diamond wafers of known thermal conductivity (k). The spectra are obtained at laser wavelengths 514.5, 785 and 1064 nm. The Raman features of these spectra

Chapter 12, Acoustic Measurements in Gases: Applications to Thermodynamic Properties, Transport Properties, and the Temperature Scale

January 1, 2001

Author(s)

Michael R. Moldover, Keith A. Gillis, John J. Hurly, J B. Mehl, J Wilhelm

Cylindrical acoustic resonators developed at Niational Institute of Standards and Technology (NIST) are routinely used to measure the speed of sound in gases with uncertainties of 0.01%, or less. The pressure dependence of the data is fitted with model

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