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NIST Authors in Bold

Displaying 30201 - 30225 of 73929

Report to The Medical Devices Standards Board

October 16, 2008
Author(s)
John A. Tesk
News of recent NIST standards-related activities are presented for information to the Medical Devices Standards Board. These include the release of reference material 8457 for measurements of crosslinking of Ultra High Molecular Weight Polyethylene (UHMWPE

Research for Improved Dental Restorative Materials

October 16, 2008
Author(s)
Francis W. Wang, Joseph M. Antonucci, J W. Stansbury
In Part A of this report, the interfacial bonding between resin and filler in dental composites is probed by use of the microdrop bead test in a single fiber model study. The microbond test has been shown to be a useful method for comparing silane treated

Research on the Mechanisms of Anaerobic Corrosion

October 16, 2008
Author(s)
W Iverson
Investigations of anaerobic corrosion of iron over the past years have led to a number of conclusions regarding the mechanisms. In addition several unusual observations related to these corrosion studies were noted. The cathodic depolarization mechanism

Resummation in the Doubly-Cut Borel Plane: The LoSurdo-Stark Effect

October 16, 2008
Author(s)
U Jentschura
The divergent perturbation series for the LoSurdo--Stark effect has purely real coefficients. By contrast, the energy eigenvalue of the quasistationary states is complex (the imaginary part corresponds to the autoionization width). Two different

Review of a Workshop on Thin Film Thermal Conductivity Measurements

October 16, 2008
Author(s)
A Feldman, N M. Balzaretti, A Guenther
A Workshop was held on the subject Thin Film Thermal Conductivity Measurement as part of the Thirteenth Symposium on Thermophysical Properties at the University of Colorado in Boulder, CO, June 25 and 26, 1997. The purpose of this Workshop was to provide a

Rhodopsin Chemistry and Structure

October 16, 2008
Author(s)
K D. Ridge
Rhodopsin is a retinal photoreceptor protein of bipartite structure consisting of the transmembrane protein opsin and the light Sensitive chromophore 11-cis-retinal, linked to opsin via a protonated Schiff base. Studies on rhodopsin have unveiled many

Robust Estimation of Effect Sizes Using Influence Functions

October 16, 2008
Author(s)
James H. Yen
The estimation of effect sizes is crucial part of meta-analysis. This papers uses influence functions as a fundamental tool in the analysis of estimates of effect size. The generalization to several variables of the influence function provides heuristic

Robustness Experiments with Two Variance Components

October 16, 2008
Author(s)
A Aviles
In many experimental settings, different types of factors affect the measured response. The factors that can be set independently of each other are called crossed factors. Nested factors cannot be set independently because the level of one factor takes on

Robustness of the Sheet Metal Springback Cup Test

October 16, 2008
Author(s)
Timothy J. Foecke, Thomas H. Gnaupel-Herold
The robustness of a proposed test for elastic springback characterization of sheet metal has been examined using a matrix of defined experimental errors. A series of flat bottom deep drawn cups made from AISI 1010 steel sheet were examined. It was found

Rotation-Tunneling Spectrum of Deuterated Ammonia Dimer

October 16, 2008
Author(s)
E N. Karyakin, Gerald T. Fraser, J G. Loeser, R J. Saykally
The millimeter and submillimeter-wave molecular-beam spectrum of the perdeuterated ammonia dimer (ND3)2 has been measured between approximately 50 GHz and 400 GHz using an electric-resonance optothermal spectrometer(EROS). As in the case of the (NH3)2, the

Scaled Born Cross Sections for Excitations of H 2 by Electron Impact

October 16, 2008
Author(s)
Yong Sik Kim
This article describes the scaling of plane-wave Born cross sections for the excitation of the H2 molecule to four low-lying electronic states (B singlet Sigma_u^+, C singlet Pi_u, B' singlet Sigma_u^+, D singlet Pi_u) by electron impact. The same BE and

Scanning Acoustic Microscopy Stress Measurements in Electronic Packaging

October 16, 2008
Author(s)
E Drescher-Krasicka, T M. Moore, T Hartfield, D Chery
Scanning acoustic microscopy has been successfully implemented for the nondestructive detection of cracks and delaminations in integrated circuit packages. In reliability tests of molded surface mount components, acoustic microscopy was instrumental in

Schlieren Imaging in Materials Processing

October 16, 2008
Author(s)
Steven P. Mates
Even before Ernst Mach used it to visualize sock waves cast by a supersonic bullet in 1888, the schlieren optical technique has been a valuable diagnostic tool in fluid mechanics, particularly int he fields of aerodynamics and heat convection, where strong

Scientific Data in the Internet Era

October 16, 2008
Author(s)
J R. Rumble
The scientific information revolution comes from the conjunction of changes in science itself with the rapid increase of computer and telecommunications power. Enormous amounts of scientific data are being generated and new database techniques are being

Second Harmonic Generation From the Si/SiO 2 Interface

October 16, 2008
Author(s)
S T. Cundiff, T M. Fortier
Optical second harmonic generation Is very sensitive to surfaces or interfaces if the bulk material is inversion symmetric. We present the resultsof second harmonic studies of the interface between silicon and silicon dioxide. Previous results have shown

Security Considerations in the System Development Life Cycle

October 16, 2008
Author(s)
Richard L. Kissel, Kevin M. Stine, Matthew A. Scholl, Hart Rossman, J Fahlsing, Jessica Gulick
The purpose of this guideline is to assist agencies in building security into their IT development processes. This should result in more cost-effective, risk-appropriate security control identification, development, and testing. This guide focuses on the
Displaying 30201 - 30225 of 73929
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