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Displaying 1176 - 1200 of 2521

Low-Noise PPLN-based Single-Photon Detector

February 13, 2007
Author(s)
Hai Xu, Lijun Ma, Oliver T. Slattery, Xiao Tang
… The overall detection efficiency of the detector is 20%. We have also characterized the sensitivity of the PPLN's …

Rapid Fixation of Methylene Chloride By a Macrocyclic Amine

March 1, 2005
Author(s)
J C. Lee, Keith J. Stanger, Bruce C. Noll, Carlos A. Gonzalez, M Marquez, Bradley D. Smith
A simple macrocyclic amine is alkylated by methylene chloride to give a quaternary ammonium chloride salt. When methylene chloride is the solvent, the reaction exhibits pseudo first order kinetics, and the reaction half-life at 25.0 C is 2.0 minutes. The

Fingerprint Image Quality

April 13, 2004
Author(s)
Elham Tabassi, Charles Wilson, Craig I. Watson
… in the C programming language and has been tested on 20 different live scan and paper fingerprints datasets …

BUILDING AND FIRE RESEARCH AT NBS/NIST 1975-2000

December 1, 2003
Author(s)
Richard N. Wright
In the last quarter of the 20th Century, building and fire research programs at the National Institute of Standards and Technology, formerly the National Bureau of Standards, provided one of the most significant sources of technology, measurements and

CONTAM 2.1 Supplemental User Guide and Program Documentation

October 22, 2003
Author(s)
George Walton, William Stuart Dols
CONTAM is a general purpose, multi-zone (nodal) airflow and contaminant transport analysis tool that can be used to determine inter-zone pressure differences, airflow rates and contaminant transport in complex building structures. This tool was developed

Metallurgical Analysis of Wrought Iron From the RMS Titanic

April 1, 2003
Author(s)
J J. Hooper, Timothy J. Foecke, L Graham, Timothy P. Weihs
The discovery of the RMS Titanic has led to a number of scientific studies, one of which addresses the role that structural materials played in the sinking of the ship. Early studies focused on the quality of the hull steel as a contributing role to the

Large Fires: Kuwait (NIST SP 995)

March 1, 2003
Author(s)
Daniel M. Madrzykowski, D. D. Evans, G A. Haynes
… wells, both burning and leaking in March, 1991, was 7,400,000 barrels/day which is only 20 percent greater than published NOAA estimates based on …
Displaying 1176 - 1200 of 2521
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