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Displaying 52826 - 52850 of 74189

Review of Mission and Operations of Regional Centers

February 1, 1998
Author(s)
E S. Oldsman, G M. Ugiansky, R Jarmin
This report reviews the mission and operations of the Manufacturing Extension Partnership (MEP) Program, managed by the Department of Commerce's National Institute of Standards and Technology (NIST). It provides an overview of the program and its

Structure Analysis of the 6H - Ba[Ti,Fe 3+ ,Fe 4+ ]O 3 -d^ Solid Solution

February 1, 1998
Author(s)
I E. Grey, C Li, L M. Cranswick, Robert S. Roth, Terrell A. Vanderah
The 6H form of BaTiO 3 forms an extensive solid solution with barium iron oxide, having the general formula BaTi 1-X-yFe 3+ xFe 4+ yO 3-δ, δ=x/2, where the Feu3+^/Fe 4+ ratio depends on reaction temperature and gas atmosphere. Solid solution members having

Surface Sensitivity of Auger-Electron Spectroscopy and X-Ray Photoelectron Spectroscopy

February 1, 1998
Author(s)
Cedric J. Powell, Aleksander Jablonski, I S. Tilinin, S Tanuma, David R. Penn
A convenient measure of surface sensitivity in Auger-electron spectroscopy (AES) and x-ray photoelectron spectroscopy (XPS) is the mean escape depth (MED). If the effects of elastic-electron scattering are neglected, the MED is equal to the electron

Testing and Modeling of Fresh Concrete Rheology

February 1, 1998
Author(s)
Chiara F. Ferraris, F DeLarrard
This report presents the results of an experimental program dealing with the rheology of fresh concrete. The three main goals were: 1) Obtain rheological data on concretes produced with various mixture compositions; 2) Establish models to link mixture

Time-Domain Calibrations of D-Dot Sensors

February 1, 1998
Author(s)
Robert T. Johnk, Arthur Ondrejka
This Tech Note covers in detail the procedures that are necessary to measure the receive transfer function of a broadband electric-field sensor using direct-pulse, time-domain methods. The calibration techniques presented here are applicable to a cone and

Using S-Check ML Version 3.0

February 1, 1998
Author(s)
Robert D. Snelick, N V. Drouin, John K. Antonishek, Michael D. Indovina, M M. Courson
S-Check is a tool for detecting performance bottlenecks in programs on computer systems with multiple processors. S-Check automates the techniques of Synthetic Perturbation Screening. Synthetic Perturbation Screening systematically perturbs selected

Implementing Assertions for Object-Oriented Systems

January 30, 1998
Author(s)
D Wallace, M Schmid, M Schatz, J Voas
The state-of-the-art in software testing is continually evolving. Researchers and practitioners are inventing techniques that improve the efficiency of software testing as well as increase the reliability of the products that are being tested. One

Mossbauer Study of NaCl-Coated Fe Nanoparticles

January 15, 1998
Author(s)
Alexander J. Shapiro, Robert D. Shull, N Gorshkov, Michael R. Zachariah
The potential use of magnetic nanoparticles as a very efficient refrigerant for magnetic refrigerators at temperatures well above 4.2 K was recently suggested [1,2]. Suitable for this purpose NaCl-coated iron nanoparticles were synthesized in a sodium

Effect of Pressure on Polymer Blend Miscibility: A Temperature-Pressure Superposition

January 14, 1998
Author(s)
M Rabeony, D J. Lohse, R T. Garner, S J. Han, W W. Graessley, Kalman D. Migler
In recent years there has been an increase in the effect of pressure on the miscibility of polymers 1-4. One reason is the need for such data to more fully understand polymer miscibility in relation to the various proposed theories and equations of state
Displaying 52826 - 52850 of 74189
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