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NIST Authors in Bold

Displaying 30051 - 30075 of 73697

Structure of Archaeal Alanine Dehydrogenase and Relation to Bacterial and Human Proteins

October 16, 2008
Author(s)
David Travis Gallagher, H G. Monbouquette, I Schroeder, Hugh Robinson, Marcia J. Holden, N Smith
In the hyperthermophilic archaeon Archaeoglobus fulgidus, gene AF1665 encodes an L-ala dehydrogenase (AlaDH, EC 1.4.1.1) but has been annotated as an ornithine cyclodeaminase (OCD) based on homology with the mu crystalline/ornithine cyclodeaminase protein

Subcritical Crack Growth in Brittle Materials: Mechanics

October 16, 2008
Author(s)
Sheldon M. Wiederhorn
The fracture of ceramic materials is often preceded by subcritical crack growth originating from flaws or cracks contained in these materials. Subcritical crack growth usually results from a stress-enhanced chemical interaction between the solid and

Summaries of the Projects of the Manufacturing Engineering Laboratory 1998

October 16, 2008
Author(s)
Lisa J. Fronczek, Bessmarie A. Young
The National Institute of Standards and Technology[s Manufacturing Engineering Laboratory (MEL) works with the U.S. manufacturing industry to develop and apply infrastructural technology, measurements, and standards to meet their needs. This report

Summary of ISO/TC 201 Standard: XXIX. ISO 20903: 2006 - Surface Chemical Analysis - Auger Electron Spectroscopy and X-Ray Photoelectron Spectroscopy - Methods Used to Determine Peak Intensities and Information Required When Reporting Results

October 16, 2008
Author(s)
Cedric J. Powell
This article is a brief summary of ISO Standard 20903. This standard provides information on methods for the measurement of peak intensities in Auger electron and X-ray photoelectron spectra and on uncertainties of derived peak area. It also specifies the

Superhydrophibicity as a Multiscale Phenomenon

October 16, 2008
Author(s)
Michael Nosonovsky
Wetting of superhydrophobic surfaces is studied as a multiscale process involving the macroscale (water droplet size), microscale (surface texture size), and nanoscale. It is shown that proper understanding of the contact angle hysteresis and the Cassie

Surface Applications of Cavity Ring-Down Spectroscopy

October 16, 2008
Author(s)
A C. Pipino, Curtis Meuse, J P. Hoefnagels, Vitalii I. Silin, John T. Woodward IV
We report preliminary results describing two new applications of cavity ring-down spectroscopy (CRDS): 1) detection of non-absorbing species by refractive-index change using surface-plasmon-resonance (SPR)-enhanced CRDS, and 2) C-H overtone detection by

Surface Constrained Plasticity: Oxide Rupture and the Yield Point Process

October 16, 2008
Author(s)
D E. Kramer, W Gerberich, K A. Yoder
Nanoindentation of single crystals has been a topic of recent investigations. This is a result of their ability to withstand near theoretical stresses without showing signs of plastic deformation. When plasticity occurs, it produces a yield point, a sudden

Surface Effects on Capped and Uncapped Nanocrystals

October 16, 2008
Author(s)
Garnett W. Bryant, W Jaskolski
Surface effects significantly influence the functionality of semiconductor nanocrystals. A theoretical understanding of these effects requires an atomic-scale description of the surface. We present an atomistic tight-binding theory of the electronic and

Surface Patterning Using Microchannel-Confined Surface Transformation ( ST)

October 16, 2008
Author(s)
Chang Xu, Kathryn L. Beers
Most surface patterned polymer brushes synthesized to date contain only one type of polymer and the remaining surface areas are either bare substrate or SAM. To further control the entire surface area, several methods have been developed to fabricate

Surfaces Formed by Subcritical Crack Growth in Silicate Glasses

October 16, 2008
Author(s)
J -. Guin, Sheldon M. Wiederhorn
The topology of surfaces formed by subcritical crack growth was investigated by the method of mapping using atomic force microscopy. The objective of the study was to determine how well the upper and lower surfaces matched after they have been formed by a

Surfaces, Interfaces, and Changing Shapes

October 16, 2008
Author(s)
Daniel Josell, F Spaepen
It is generally recognized that the capillary forces associated with internal and external interfaces affect both the shapes of liquid-vapor surfaces and wetting of a solid by a liquid. It is less commonly understood that the same phenomenology often

Swelling of Grafted Polymer Brushes

October 16, 2008
Author(s)
Jack Douglas, M S. Kent, Sushil K. Satija, Alamgir Karim
The end-grafting of polymer chains to surfaces provides a robust method for modifying surface properties. Such layers are increasingly being employed in applications-modifying the biocompatibility of implants, the wetting, adhesive and frictional

Symposium on Cleanliness of Biomedical Devices

October 16, 2008
Author(s)
John A. Tesk
An outline of the kinds of papers appropriate for an ASTM Symposium on Cleanliness of Medical Implants, May 2005 is presented, with example of the topical areas of interest. Organizations from which papers are sought include:The U.S. Food and drug

Technetium: The Element That Was Discovered Twice

October 16, 2008
Author(s)
J T. Armstrong
If you read about technetium in the Handbook of Chemistry and Physics (see Technetium at a Glance) you might think you knew all you needed to about its discovery and existence. That s how I felt the first time I had to deal with this rare element. But

Temperature Dependent Magnetization Reversal in (Co/Pt)/Ru Multilayers

October 16, 2008
Author(s)
Joseph E. Davies, O Hellwig, E E. Fullerton, K Liu
Antiferromagnetically coupled (Co/Pt)/Ru multilayers with perpendicular anisotropy have been shown to exhibit both vertically and laterally correlated magnetization reversal modes. In this work the magnetization reversal of a multilayer film whose layer

The 1998 American Ceramic Society Annual Meeting--A Centennial Celebration

October 16, 2008
Author(s)
Winnie Wong-Ng
The 1998 annual meeting of the American Ceramics Society (ACerS) and exposition represented a unique milestone. It was the beginning of the centennial celebration and it was a once-in-a-lifetime experience for the ACerS members. This very special meeting
Displaying 30051 - 30075 of 73697
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