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Displaying 3551 - 3575 of 4199

Diffusion Barrier Cladding in Si/SiGe Resonant Interband Tunneling Diodes and Their Patterned Growth on PMOS Source/Drain Regions

January 1, 2003
Author(s)
N Jin, A T. Rice, P R. Berger, P E. Thompson, C Rivas, R Lake, S Sudirgo, J J. Kempisty, B Curanovic, S L. Rommel, K D. Hirschman, S K. Kurinec, P Chi, David S. Simons, S.J. Chung
Si/SiGe resonant interband tunnel diodes (RITD) employing delta-doping spikes that demonstrate negative differential resistance (NDR) at room temperature are presented. Efforts have focused on improving the tunnel diode peak-to-valley current ratio (PVCR)

The Environmental Life Cycle

October 1, 2002
Author(s)
Barbara C. Lippiatt
ES (Building for Environmental and Economic Sustainability) implements a rational, systematic technique for selecting environmentally and economically balanced building products. The technique is based on consensus standards and designed to be practical

Design of an Active MM-Wave Concealed Object Imaging System

August 1, 2001
Author(s)
Nicholas Paulter, Erich N. Grossman, Gerard N. Stenbakken, Bryan C. Waltrip, Shalva Nolen, Carl D. Reintsema
The research and design of an active millimeter-wave concealed object imaging system is described. Several illumination and detection methods were analyzed via computer simulation to assess the effects of system parameters on the signal-to-noise ratio of

New NIST Mercury Triple-Point Cells

June 1, 2001
Author(s)
Gregory F. Strouse, J Lippiatt
Six new Hg triple-point (TP) cells (234.3156 K) were manufactured in the NIST PRT Laboratory for use in the realization of the International Temperature Scale of 1990 (ITS90). The fixed-point cells consisted of both glass and stainless steel designs with

Performance of a Commerical Hot Water Boiler

November 1, 1998
Author(s)
Cheol D. Park, S T. Liu
In responding to ASHRAE SPC 155P's interest and to provide additional evidence on the envisioned linear relationship between output and input of a boiler under part load conditions, the National Institute of Standards and Technology undertook to conduct a

NIST/NBS Fire Research and FRCA: 25 Years of Progress

April 16, 1998
Author(s)
Richard G. Gann
The National Bureau of Standards' Center for Fire Research and the Fire Retardant Chemicals Association were formed within a year of each other. The former has undergone major organizational changes, NBS having become NIST, and fire research now being part

On Multiple Interpretations

May 1, 1997
Author(s)
Jung-Hyun Han
… a wall between feature recognition and process planning, Manufacturing knowledge which is typically used in process …

A Methodology for the Reduction of Imprecision in the Engineering Process

September 1, 1996
Author(s)
Ronald Giachetti, R Young, A Roggatz, W Eversheim, G Perrone
Engineering design is characterized by a high level of imprecision, vague parameters, and ill-defined relationships. In design, imprecision reduction must occur to arrive at a final product specification. Few design systems exist for adequately

Flame Suppression Effectiveness of Halon Alternatives (NISTIR 5499)

September 1, 1994
Author(s)
William L. Grosshandler, Anthony P. Hamins
The elimination of new production of halon 1301 has forced the manufacturers, owners, and users of aircraft to search for an alternative. The program described here developed performance screens for candidate agents as a means to identify the best
Displaying 3551 - 3575 of 4199
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