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You searched on: Topic Area: Chemistry

Displaying records 791 to 800.
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791. The NBS Program for Standards for Trace Organic Analysis in the Marine Environment
Topic: Chemistry
Published: 12/1/1977
Authors: Harry S Hertz, S. N. Chesler, Willie E May, Stephen A Wise, L.R. Hilpert, J.M. Brown, A.J. Fatiadi, Franklin R Guenther

792. Petroleum Analysis: Methodology for the Quantitative and Qualitative Assessment of an Oil Spill
Topic: Chemistry
Published: 12/1/1976
Authors: Harry S Hertz, Willie E May, S. N. Chesler, B.H. Gump

793. Drop Sampler for Obtaining Fresh and Sea Water Samples for Organic Compound Analysis
Topic: Chemistry
Published: 12/1/1975
Authors: B.H. Gump, Harry S Hertz, Willie E May, S. N. Chesler, S.M. Dyszel, D.P. Enagonio

794. Chromatographic Analysis of Hydrocarbons in Marine Sediments and Sea Water
Topic: Chemistry
Published: 11/1/1975
Authors: Willie E May, S. N. Chesler, S.P. Cram, B.H. Gump, Harry S Hertz, D.P. Enagonio, S.M. Dyszel

795. Catalyst-free GaN Nanowires as Nanoscale Light Emitters
Topic: Chemistry
Published: Date unknown
Authors: Kristine A Bertness, Norman A Sanford, John B. Schlager, Alexana Roshko, Todd E Harvey, Paul T Blanchard, Matthew David Brubaker, Andrew M. Herrero, Aric Warner Sanders
Abstract: Catalyst-free growth of GaN nanowires with molecular beam epitaxy produces material of exceptionally high quality with long minority carrier lifetimes and low surface recombination velocity. The nanowires grow by thermodynamic driving forces that enh ...

796. Characterization of Standard Reference Material 2942, Ce-Ion-Doped Glass, Spectral Correction Standard for UV Fluorescence
Topic: Chemistry
Published: Date unknown
Authors: Paul C DeRose, Melody V Smith, Klaus Mielenz, Jeffrey R. Anderson, Gary W Kramer
Abstract: Standard Reference Material (SRM) 2942 is a cuvette-shaped, Ce-ion-doped glass, recommended for use for relative spectral correction of emission and day-to-day performance verification of steady-state fluorescence spectrometers. Properties of this st ...

797. Development of Multicolor Flow Cytometry Standards: Assignment of Equivalent Reference Fluorophores (ERF) Unit
Series: Journal of Research (NIST JRES)
Topic: Chemistry
Published: Date unknown
Authors: Lili Wang, Adolfas Kastytis Gaigalas
Abstract: A procedure is described for assigning values of the number of equivalent reference fluorophores (ERF) to microspheres labeled with a fluorophore designed to produce fluorescence in a given channel of a multicolor flow cytometer. There is a different ...

798. Impact Energy Dependence of SF^d5^^u+^ Ion Beam Damage of Poly(Methyl Methacrylate) Studied by Time-of-Flight Secondary Ion Mass Spectrometry
Topic: Chemistry
Published: Date unknown
Authors: M S. Wagner, John G Gillen
Abstract: Recent advances in instrumentation for Secondary Ion Mass Spectrometry (SIMS) have focused on the application of polyatomic primary ions for enhancing molecular secondary ion signals of organic materials. A few studies have also noted that some polym ...

799. Improvements in the Winkler Titration for Iodide in Iodized Salt
Topic: Chemistry
Published: Date unknown
Authors: Kenneth W Pratt, Karen E Murphy
Abstract: A bromine gas generator, based on bleach, potassium bromide and dilute hydrochloric acid, replaces hazardous pure bromine used in the classical Winkler titration for iodide. This modification eliminates the need to store or use pure bromine. The ga ...

800. Measurement of the Electrostatic Edge Effect in Wurtzite GaN Nanowires
Topic: Chemistry
Published: Date unknown
Authors: Alex Henning, Benjamin Klein, Kristine A Bertness, Paul T Blanchard, Norman A Sanford, Yossi Rosenwaks
Abstract: The electrostatic effect of the hexagonal corner on the electronic structure in wurtzite GaN nanowires (NWs) was directly measured using Kelvin probe force microscopy (KPFM). By correlating electrostatic simulations with the measured potential differ ...

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