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Chemistry

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Displaying 1426 - 1450 of 1934

A Thermodynamic Investigation of Reactions Catalyzed by Tryptophan Synthase

July 27, 1998
Author(s)
N Kishore, Yadu D. Tewari, D Akers, Robert N. Goldberg, E. W. Miles
Microcalorimetry and high-performance liquid chromatography have been used to conduct a thermodynamic investigation of the following reactions catalyzed by the tryptophan synthase [alpha] 2[Beta] 2 complex (EC 4.2.1.20) and its subunits:indole(aq) + L

Quantitative secondary ion mass spectrometry imaging of self-assembled monolayer films for electron beam dose mapping in the environmental scanning electron microscope

July 1, 1998
Author(s)
John G. Gillen, Scott A. Wight, David S. Bright, T M. Herne
Fluorinated alkanethiol self assembled monolayers (SAM) films immobilized on gold substrates have been used as electron-sensitive resists to map quantitatively the spatial distribution of the primary electron beam scattering in an environmental scanning

Metrology: Impact on National Economy and International Trade

June 1, 1998
Author(s)
Hratch G. Semerjian, Robert L. Watters
The U.S. Federal Government has a strong role in metrology R&D in the U.S because of its importance to the nation's economy and the Constitutional authority given to the National Institute of Standards and Technology (NIST). However, pressures to maintain

Thermodynamic Properties for the Alternative Refrigerants

June 1, 1998
Author(s)
Mark O. McLinden, Eric W. Lemmon, R. T. Jacobsen
Models commonly used to calculate the thermodynamic properties of refrigerants are summarized. For pure refrigerants, the virial, cubic, Martin-Hou, Benedict-Webb-Rubin, and Helmholtz equations of state and the extended corresponding states model are
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