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Displaying 43001 - 43025 of 74049

Analysis of Switching in Uniformly Magnetized Bodies

September 1, 2002
Author(s)
Michael J. Donahue, Donald G. Porter
A full analysis of magnetization reversal of a uniformly magnetized particle by coherent rotation is presented.The magnetization energy of the particle in the presence of an applied field H is modeled as E = ( 0/2)MT DM - 0HTM.This model includes shape

Anomalously Large Intermixing in Aluminium-Transition Metal Bilayers

September 1, 2002
Author(s)
J D. Buchanan, T P. Hase, B K. Tanner, P J. Chen, L Gan, Cedric J. Powell, William F. Egelhoff Jr.
The interdiffusion lengths in thin film samples of the form X/Al and Al/X, where X is a metal from rows 4,5 and 6 of the Periodic Table, have been measured by Grazing Incidence X-ray Scattering. Scans of the specular reflectivity have been fitted to

Architecture and Implementation of a Design Repository System

September 1, 2002
Author(s)
Simon Szykman
This paper describes the design and development of a design repository software system. This system is a prototype implementation intended to demonstrate the role of design repositories as part of a vision for the next generation of product development

Baseline Measures for Improving Housing Durability

September 1, 2002
Author(s)
Robert E. Chapman, C A. Izzo
The Partnership for Advancing Technology in Housing (PATH), a program of the U.S. Department of Housing and Urban Development, is a public/private partnership in which leaders of the home building, product manufacturing, insurance and financial industries

Biomarkers of TP53 Mutation and Y-Chromosome Loss Used to Detect Cellular/Genetic Damage in Tissue Engineered Skin

September 1, 2002
Author(s)
H Rodriguez, M A. Marino, P McAndrew, Donald H. Atha, Pawel Jaruga, M Birincioglu, Peter E. Barker, C D. O'Connell
Tissue engineering is an emerging area of biotechnology that will provide replacement tissues for patients, as well as complex, functional biological systems for research and testing in the pharmaceutical industry. Fundamentals to many tissue-engineered

Calibration Experiments of a Laser Scanner

September 1, 2002
Author(s)
Geraldine S. Cheok, Stefan D. Leigh, Andrew L. Rukhin
The potential applications of laser scanners or LADARs (Laser Detection and Ranging) are numerous, and they cross several sectors of the industry construction, large-scale manufacturing, remote sensing, national defense. A LADAR is an instrument which can

Compact Force Sensors for Low-Force Mechanical Probe Calibration

September 1, 2002
Author(s)
Jon R. Pratt, Douglas T. Smith, S Woody
The loading mechanisms of instrumented indentation machines are often calibrated using deadweights. In many cases, due to the geometry of the loading frame, the applied deadweight is tensile, while the indentation leads to be measured are compressive. In

Correlation of Molecular Orientation with Adhesion at Polystyrene/Soild Interfaces

September 1, 2002
Author(s)
P T. Wilson, Lee J. Richter, William E. Wallace, Kimberly A. Briggman, John C. Stephenson
Vibrationally resonant sum-frequency generation (VR-SFG) has been used to characterize the molecular orientation of the phenyl groups at the interface between polystyrene (PS) films and surface-modified glass substrates. Both the interface structure and

Crack Growth in Soda-Lime Silicate Glass Near the Static Fatigue Limit

September 1, 2002
Author(s)
Sheldon M. Wiederhorn, A Dretzke, J Rodel
The atomic force microscope (AFM) was used to explore the nature of features formed on the surfaces of cracks in soda-lime-silicate glass that were held at stress intensity factors below the crack growth threshold. All studies were conducted in water

Cryptographic Standards and Guidance: A Status Report

September 1, 2002
Author(s)
Elaine B. Barker
A comprehensive toolkit of cryptographic standards and associated guideline that covers a wide range of cryptographic technology is currently under development by the Computer Security Division at NIST. These standards and guidelines will enable U.S

Crystal Structures and Reference Diffraction Patterns of BaSrR 4 O 8

September 1, 2002
Author(s)
Winnie K. Wong-Ng, James A. Kaduk, J Dillingham
The structure of BaSrR4O8 (where R = La, Nd, Sm, Gd, Eu, Dy, Ho, Y, Er, Tm, Yb, and Lu) has been investigated, and the X-ray reference patterns of these compounds have been prepared using the Rietveld refinement technique. BaSrR2O4 are isostructural to

Development of a Robotic Structural Steel Placement System

September 1, 2002
Author(s)
Alan M. Lytle, Kamel S. Saidi, William C. Stone
The NIST Construction and Automation Group (CMAG), in cooperation with the NIST Intelligent Systems Division (ISD), is researching robotic structural steel placement as part of a project to develop an Automated Steel Construction Testbed (ASCT). The ASCT

Distinguishing the Relative Contribution of Fossil Fuel and Biomass Combustion Aerosols Deposited at Summit, Greenland through Isotopic and Molecular Characterization of Insoluble Carbon

September 1, 2002
Author(s)
J F. Slater, Lloyd A. Currie, J E. Dibb, Bruce A. Benner Jr
Although the earth's polar regions are isolated from most industrial activity, combustion-generated particles from both fossil fuel and biomass burning impact the regions. Most efforts aimed at quantifying the input of combustion aerosols at Summit

Economic Approaches to Homeland Security for Constructed Facilities

September 1, 2002
Author(s)
Harold E. Marshall
The 11 September 2001 terrorist attack on the New York World Trade Center (WTC) Complex and the Pentagon changed dramatically the way buildings, industrial facilities, and infrastructure will be designed, sited, and managed in the United States. The

Effects of Noise Level in Fitting In-Situ Optical Reflectance Spectroscopy Data

September 1, 2002
Author(s)
Chih-chiang Fu, Kristine A. Bertness, Chih-Ming Wang
We discuss the combination of noise level and scaling factor accuracy needed in optical reflectance spectroscopy data in order to obtain accurate parameters by fitting simulated Optical Reflectance Spectroscopy data curves with different noise level.
Displaying 43001 - 43025 of 74049
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