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Displaying 801 - 825 of 3672

Membrane protein resistance of oligo(ethylene oxide) self-assembled monolayers

July 31, 2014
Author(s)
David J. Vanderah, Marlon L. Walker, David T. Gallagher, Ryan Vierling, Fay Crawshaw
Spectroscopic ellipsometry was used to evaluate the resistance to protein adsorption (RPA) of self- assembled monolayers (SAMs) of HS(CH2)3O(CH2CH2O)6M and [HS(CH2)3CH]2O-(CH2CH2O)6M, where M = CH3 or H, on Au. The SAMs were exposed to fibrinogen, a

Metrology for comparison of displacements at the picometer level

July 31, 2014
Author(s)
Jack A. Stone Jr., Patrick F. Egan, Jay H. Hendricks, Gregory F. Strouse, Douglas A. Olson, Jacob E. Ricker, Gregory E. Scace, Donavon Gerty
An apparatus capable of comparing displacements with picometer accuracy is currently being designed at NIST. In principle, we wish to compare one displacement in vacuum to a second, equal displacement in gas, in order to determine gas refractive index. If

Transport Properties of Fluids near Critical Points

June 5, 2014
Author(s)
Jan V. Sengers, Richard A. Perkins
This chapter reviews the currently available information concerning the behavior of transport properties near the vapor-liquid critical point of fluids and fluid mixtures. Special attention is devoted to the behavior of the thermal conductivity which

Chemical Fume Hoods and Biological Safety Cabinets

June 4, 2014
Author(s)
Thomas J. Bruno
Engineered safety equipment is preferred over the reliance on personal protective equipment, and the fume hood is one such engineered safety device that is nearly ubiquitous in laboratories. Laboratories concerned with biological specimens (microbes

Common Symbols Used in Gas and Liquid Chromatographic Schematic Diagrams

June 4, 2014
Author(s)
Thomas J. Bruno
The literature of gas and liquid chromatography frequently contains schematic diagrams that depict analytical apparatus and peripherals. The interpretation of such diagrams can be facilitated by the following graphics that show the most common symbols used

Figures of Merit

June 4, 2014
Author(s)
Thomas J. Bruno
In the interpretation of results from a particular technique, one often must evaluate the performance of the measurement on the basis of objective measures that are called figures of merit. The following table provides a description of the more common

Varieties of Hyphenated Gas Chromatography with Mass Spectrometry

June 4, 2014
Author(s)
Thomas J. Bruno
Because of the very powerful and common application of mass spectrometry with gas chromatography, the various technologies warrant more detailed consideration.[1-4] The following table provides basic information on the capabilities and applicability of the
Displaying 801 - 825 of 3672
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