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Displaying 49301 - 49325 of 73779

Ultrasonic Nonlinearity Parameter in Precipitate-Hardened Steels

December 1, 1999
Author(s)
Donna C. Hurley, Davor Balzar, P T. Purtscher
We have experimentally investigated a series of steel specimens containing copper-rich precipitates. The precipitate microstructure depended on the final aging treatment (time and temperature), which in turn affected the specimen hardness. We performed

Report on the NIST Java TM AES Candidate Algorithm Analysis

November 25, 1999
Author(s)
James F. Dray Jr.
NIST solicited candidate algorithms for the Advanced Encryption Standard in a Federal Register Announcement dated September 12, 1997. Fifteen candidates were submitted, and NIST has subsequently worked with a worldwide community of cryptanalysts and

Scalar Dissipation in Axisymmetric Jets

November 21, 1999
Author(s)
William M. Pitts
Scalar dissipation, defined as twice the product of the molecular diffusion coefficient and the local gradient of the mixture fraction taken as a dot product with itself, characterizes molecular mixing rates in turbulent flows and has a central role in

Two-Dimensional Index Profiling of Fibers and Waveguides

November 20, 1999
Author(s)
N. H. Fontaine, M. Young
We have constructued a two-dimensional refracted-ray scanner that can resolve index-of-refraction increments of approximately 4 x 10 -5. this resolution is an order of magnitude finer than the uncertainty of the measurement. The scanner can be adapted to
Displaying 49301 - 49325 of 73779
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