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Topic Area: Chemical Analysis

Displaying records 61 to 70 of 137 records.
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61. Simple, Quantitative Headspace Analysis by Cryoadsorption on a Short Alumina PLOT Column
Topic: Chemical Analysis
Published: 8/1/2009
Author: Thomas J Bruno
Abstract: The use of purge and trap methods for sampling volatile organic compounds prior to chromatographic analysis is a mature technology.  Application to low volatility compounds has been far less facile and sensitive.  Especially problematic has ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=832252

62. Analysis of the Structure and Function of YfcG from Escherichia coli Reveals an Efficient and Unique Disulfide Bond Reductase
Topic: Chemical Analysis
Published: 7/21/2009
Authors: Megan C Wadington , Jane E Ladner, N V Stourman, Joel M Harp, R N Armstrong
Abstract: YfcG is one of eight glutathione (GSH) transferase homologues encoded in the Escherichia coli genome. The protein exhibits low or no GSH transferase activity toward a panel of electrophilic substrates. In contrast, it has a very robust disulfidebond ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=903003

63. Composition-Explicit Distillation Curves for Mixtures of Diesel Fuel with Dimethyl Carbonate and Diethyl Carbonate
Topic: Chemical Analysis
Published: 7/14/2009
Authors: Thomas J Bruno, Arron Wolk, Alexander Naydich, Marcia L Huber
Abstract: We have recently introduced several important improvements in the measurement of distillation curves of complex fluids. The modifications to the classical measurement provide for (1) a composition explicit data channel for each distillate fraction ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=901495

64. A Comparison of the Hypersonic Vehicle Fuel JP-7 to the Rocket Propellants RP-1 and RP-2 Using the Advanced Distillation Curve Method
Topic: Chemical Analysis
Published: 6/15/2009
Authors: Tara M Lovestead, Thomas J Bruno
Abstract: JP-7 is a hydrocarbon-based kerosene fraction with a low volatility and high thermal stability. JP-7 was developed in the 1950s to meet the more stringent requirements necessary for the development of high-altitude reconnaissance planes that fly at ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=901093

65. The Internal Fluid Mechanics of Explosive Trace Detectors using Computational Fluid Dynamics
Series: OTHER
Topic: Chemical Analysis
Published: 5/1/2009
Authors: Matthew E Staymates, Wayne Smith, John G Gillen
Abstract: Efforts are underway in the Surface and Microanalysis Science Division at the National Institute of Standards and Technology to study the vapor transport mechanisms inside explosive trace detection instruments (ETD s) and produce standard test materi ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=901483

66. Analysis of Fuel Ethanol Plant Liquor with the Composition Explicit Distillation Curve Method
Topic: Chemical Analysis
Published: 4/16/2009
Authors: Thomas J Bruno, Arron Wolk, Alexander Naydich
Abstract: While the use of ethanol and ethanol blends as motor fuels dates back to the earliest vehicles, ethanol has recently received extraordinary attention as a renewable liquid fuel. In the United States, the application of this fluid is mainly as an add ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=901155

67. Application of the Advanced Distillation Curve Method to the Aviation Fuel Avgas 100LL
Topic: Chemical Analysis
Published: 3/2/2009
Authors: Tara M Lovestead, Thomas J Bruno
Abstract: We have recently introduced several important improvements in the measurement of distillation curves for complex fluids. The modifications to the classical method and apparatus provide for (1) a composition explicit data channel for each distillate ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=900206

68. Thermal Decomposition Kinetics of Propylcyclohexane
Topic: Chemical Analysis
Published: 1/21/2009
Authors: Jason A Widegren, Thomas J Bruno
Abstract: As part of a large-scale thermophysical property measurement project, the decomposition kinetics of propylcyclohexane was investigated. Decomposition reactions were performed at 375, 400, 425, and 450 °C in stainless steel ampoule reactors. At each t ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=832260

69. Inducing analytical orthogonality in tungsten oxide-based microsensors using materials structure and dynamic temperature control
Topic: Chemical Analysis
Published: 1/4/2009
Authors: Kurt D Benkstein, Baranidharan Raman, David L. Lahr, John E Bonevich, Stephen Semancik
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=902372

70. Variability of The Rocket Propellants RP-1, RP-2, and TS-5: Application of a Composition- and Enthalpy-Explicit Distillation Curve Method
Topic: Chemical Analysis
Published: 12/3/2008
Authors: Lisa S. Ott, Amelia B. Hadler, Thomas J Bruno
Abstract: We have recently introduced several important improvements in the measurement of distillation curves for complex fluids.  This method is a significant improvement over current approaches, featuring a composition-explicit data channel for each di ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=832254