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Displaying 47976 - 48000 of 74084

An Optical Sensor for Polymer Injection Molding

January 1, 2000
Author(s)
Anthony J. Bur, C L. Thomas
An optical sensor using fiber optics to access the mold cavity was used to monitor the mold filling and cooling phases of injection molding. The sensor consists of a sapphire window at the end of a sleeved ejector pin into which an optical fiber is

An Overview of Nano-Micro-Meso Scale Manufacturing at NIST

January 1, 2000
Author(s)
E C. Teague, Jun-Feng Song, Bradley N. Damazo, John Evans, Matthew A. Davies, Nicholas G. Dagalakis
The Manufacturing Engineering Laboratory (MEL) has a unique mission of discrete part manufacturing technology within the National Institute of Standards and Technology''s (NIST) mission of measurement, standards, data and infrastructure technology. Several

Angular Distribution of Light Scattered From a Sinusoidal Grating

January 1, 2000
Author(s)
Egon Marx, Thomas A. Germer, Theodore V. Vorburger, B C. Park
The angular distributions of light scattered by gold-coated and aluminum-coated gratings having amplitudes of ~90 nm and periods of 6.67 ¿m were measured and calculated for light incident from a HeNe laser at an angle of 6E. Experimental results are

Assessment of Machining Models: Progress Report

January 1, 2000
Author(s)
Robert W. Ivester, Michael Kennedy, Matthew A. Davies, R Stevenson, J Thiele, R Furness, S M. Athavale
Machining involves extremely localized and nonlinear physical phenomena that occur over a wide range of temperatures, pressures, and strains. This has hindered progress in predictive modeling of machining processes. Many different types of models ranging

Assignment of Enzyme Substrate Specificity by Principal Component Analysis of Aligned Protein Sequences: An Experimental Test Using DNA Glycosylase Homologues

January 1, 2000
Author(s)
A Gogos, D Jantz, K. J. Tuerk, D Richardson, M. Dizdaroglu, N D. Clarke
We have studied the relationship between amino acid sequence and substrate specificity in a DNA glycosylase family by characterizing experimentally the specificity of four new members of the family. We show that principal component analysis (PCA) of the
Displaying 47976 - 48000 of 74084