Search Publications

Displaying 1551 - 1575 of 2095

Development and Analysis of Three Diesel Particulate-Related Standard Reference Materials for the Determination of Chemical, Physical, and Biological Characteristics

March 1, 2003

Author(s)

Dianne L. Poster, M. J. Lopez de Alda, Michele M. Schantz, Lane C. Sander, Stephen A. Wise, M. G. Vangel

Enantioselective Separations in Capillary Electrophoresis with Dextran Sulfate as the Chiral Selector

March 1, 2003

Author(s)

Karen W. Phinney, Lane C. Sander

Evaluation of Extraction Techniques for the Forensic Analysis of Human Scalp Hair Using Gas Chromatography/Mass Spectrometry (GC/MS)

March 1, 2003

Author(s)

J V. Goodpaster, B C. Drumheller, Bruce A. Benner Jr.

The ability of various liquid extraction techniques to isolate the natural and artificial surface components of human scalp hair has been evaluated. These organic components largely consist of sebaceous lipids and hair treatment residues, and have shown

Rare-Earth Glass Reference Materials for Near-Infrared Spectrometry: Correcting and Exploiting Temperature Dependencies

February 15, 2003

Author(s)

Steven J. Choquette, L E. O'Neal, David L. Duewer

Determination and Comparison of Nitrated Polycyclic Aromatic Hydrocarbons Measured in Air and Diesel Particulate Reference Materials

February 1, 2003

Author(s)

H. A. Bamford, D. Z. Bezabeh, Michele M. Schantz, Stephen Wise, J. E. Baker

Determination of Polycyclic Aromatic Hydrocarbons in Diesel Particulate-Related Standard Reference materials by using Gas Chromatography/Mass Spectrometry with Negative Ion Chemical Ionization

February 1, 2003

Author(s)

D. Z. Bezabeh, H. A. Bamford, Michele M. Schantz, Stephen Wise

Evidence for Structural Changes in Carboxyl-Terminal Peptides of Transducin Alpha-Subunit Upon Binding a Soluble Mimic of Light-Activated Rhodopsin

January 21, 2003

Author(s)

D M. Brabazon, N G. Abdulaev, John Marino, K D. Ridge

Although a high-resolution crystal structure for the ground state of rhodopsin is now available, portions of the cytoplasmic surface are not well resolved and the structural basis for the interaction of the cytoplasmic loops with the retinal G-protein

Thermodynamics of the Lipase-Catalyzed Transesterification of 1-Phenyl-1-Alkanols and Butyl Acetate in Organic Solvents

January 16, 2003

Author(s)

Yadu D. Tewari, David J. Vanderah, J D. Rozzell

The thermodynamics of the lipase-catalyzed transesterification reactions of butyl acetate and 1-phenyl-1-alkanols from C 1 to C 4 have been studied in organic solvents. Equilibrium measurements of the reactions with benzyl alcohol and (R)-(+)-1 phenyl

Determination of Polycyclic Aromatic Hydrocarbons with Molecular Weight 300 and 302 in Environmental-Matrix Standard Reference Materials by Gas Chromatography/Mass Spectrometry

January 15, 2003

Author(s)

Patricia Schubert, Michele M. Schantz, Lane C. Sander, Stephen Wise

Certification of Standard Reference Material 970, Ascorbic Acid in Serum, and Analysis of Associated Interlaboratory Bias in the Measurement Process

January 1, 2003

Author(s)

S A. Margolis, M Vangel, David L. Duewer

Determination of Polychlorinated Biphenyl Congeners and Chlorinated Pesticides in a Fish Tissue Standard Reference Material

January 1, 2003

Author(s)

Dianne L. Poster, John R. Kucklick, Michele M. Schantz, Barbara J. Porter, Stefan D. Leigh, Stephen A. Wise

MALDI-TOF MS Characterization of Covalently-Cationized Polymers

January 1, 2003

Author(s)

H M. Byrd, Sheng Lin-Gibson, S Bencherif, David L. VanderHart, Barry J. Bauer, B M. Fanconi, Charles M. Guttman, William E. Wallace

Structural Alterations of the Heme Environment of Cytochrome P450cam and the Y96F Mutant as Deduced by Resonance Raman Spectroscopy

January 1, 2003

Author(s)

G Niaura, Vytas Reipa, M P. Mayhew, Marcia J. Holden, V L. Vilker

Resonance Raman spectroscopy at 2.5 cm-1 resolution was used to probe differences in wild type and Y96F mutant P450cam (CYP101), both with and without bound camphor or styrene substrates. In the substrate-free state, the spin state equilibrium is shifted

Local Protein Dynamics and Catalysis: Detection of Segmental Motion Associated With Rate-Limiting Product Release by a Glutathione Transferase

December 24, 2002

Author(s)

S G. Codreanu, Jane E. Ladner, G Xiao, N V. Stourman, D L. Hachey, G L. Gilliland, R N. Armstrong

Glutathione transferase rGSTM1-1 catalyzes the addition of glutathione (GSH) to 1-chloro-2,4-dinitrobenzene in which chemical step of the reaction is 60-fold faster than the physical step of product release. The hydroxyl group of Y115, located in the

190Pt-1860s and 187Re-1870s Systematics of the Sudbury Igneous Complex

December 16, 2002

Author(s)

J.W. Morgan, R.J. Walker, M.F. Horan, Ellyn S. Beary, A.J. Naldrett

A Coulometric Method for Determining Substances that Interfere with the Measurement of Water in Oils and Other Chemicals by the Karl Fischer Method

December 1, 2002

Author(s)

S A. Margolis, J Paulsen, E Park

Determination of mercury in the eggs of common murres (Uria aalge) for the seabird tissue archival and monitoring project

December 1, 2002

Author(s)

Steven J. Christopher, Stacy S. Vander-Pol, Rebecca S. Pugh, Russell D. Day, Paul R. Becker

Persistent organochlorine pollutants in ringed seals and polar bears collected from northern Alaska

December 1, 2002

Author(s)

John R. Kucklick, W D. Struntz, Paul R. Becker, G.W. York, T.M O'Hara, J.E. Bohonowych

Preface to Cavity-Enhanced Spectroscopies

December 1, 2002

Author(s)

Roger D. van Zee, J P. Looney

This submission is an introduction to Cavity-Enhanced Spectroscopy, a book which is to be published by Academic Press.

Binary Diffusion Coefficients for Combustion Modeling

November 30, 2002

Author(s)

William S. McGivern, Jeffrey A. Manion

Recent studies have demonstrated that combustion models can be as sensitive to the binary diffusion coefficients of the fuel species as to the kinetics of major chemical reactions. We have constructed a reversed-flow chromatographic apparatus for the

Grazing Incidence X-Ray Photoelectron Spectroscopy: A Method to Study Gate Dielectric Films on Si

November 1, 2002

Author(s)

Terrence J. Jach, E Landree

Grazing Incidence X-ray Photoelectron Spectroscopy (GIXPS) is a method that offers promise as a non-destructive technique to measure the thickness and chemistry of ultrathin gate dielectric films. It combines aspects of x-ray reflectivity and conventional

Radiolytic Dechlorination of Polychlorinated Biphenyls in Transformer Oil and in Marine Sediment

November 1, 2002

Author(s)

M Chaychian, C A. Jones, Dianne L. Poster, Joseph Silverman, Pedatsur Neta, Robert E. Huie, M I. Al-Sheikhly

Radiolytic dechlorination of PCBs in transformer oil and in marine sediments has been studied. At low PCB concentrations, complete degradation of the PCBs in transformer oil was achieved without degradation of the oil. Addition of an organic base

Value Assignment of Nutrient Concentrations in Standard Reference Material 2384 Baking Chocolate

October 25, 2002

Author(s)

Katherine E. Sharpless, Jeanice M. Brown Thomas, Bryant C. Nelson, C. S. Phinney, John R. Sieber, Laura J. Wood, James H. Yen, D W. Howell

Structure?Function Relationships in High-Density Octadecylsilane Stationary Phases by Raman Spectroscopy: 2. Effect of Common Mobile-Phase Solvents

October 8, 2002

Author(s)

M W. Ducey, C J. Orendorff, J E. Pemberton, Lane C. Sander

Interlaboratory Assessment of Measurement Precision and Bias in the Coulometric Karl Fischer Determination of Water

October 1, 2002

Author(s)

S A. Margolis, J Angelo