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Displaying 30826 - 30850 of 74115

Evaluation of a Capacitance Scaling System

December 1, 2007
Author(s)
Svetlana Avramov-Zamurovic, Andrew D. Koffman, Bryan C. Waltrip, Yicheng Wang
A capacitance scaling system from 10 nF to 100 mF [1], [2] has been implemented at the National Institute of Standards and Technology (NIST). Standard four-terminal-pair (4TP) capacitors are characterized using a capacitance scaling calibration procedure

Foam-based optical absorber for high-power laser radiometry

December 1, 2007
Author(s)
Krishna Ramadurai, Christopher L. Cromer, Xiaoyu X. Li, Roop Mahajan, John H. Lehman
We report damage threshold measurement results for novel absorbers comprised of either liquid-cooled silicon carbide or vitreous carbon foams. The measurements demonstrate damage thresholds up to 1.6×10^+4 W/cm 2 at an incident circular spot size of 2 mm

Indoor Localization: Technology That Can Save First Responder Lives

December 1, 2007
Author(s)
Nader Moayeri, Camillo A. Gentile, Kamran Sayrafian, Michael R. Souryal
Every year a number of first responders lose their lives while battling fires or rescuing civilians during such emergencies. Indoor localization or location tracking roughly provides the same capability inside buildings that GPS does outdoors. It allows a

Multilayers for Next Generation X-Ray Sources

December 1, 2007
Author(s)
Sasa Bajt, H N. Chapman, E Spiller, S Hau-Riege, J Alameda, A J. Nelson, C C. Walton, B Kjornrattanawanich, Andrew Aquila, Charles Tarrio, Steven Grantham
Multilayers are artificially layered structures that can be used to create optics and optical elements for a broad range of x-ray wavelengths, or can be optimized for other applications. The development of next generation x-ray sources (synchrotrons and x

NIST Fire Fighter Technology Program Overview (NIST SP 1051)

December 1, 2007
Author(s)
Nelson P. Bryner
The Advanced Fire Service Technologies (AFST) Program objectives are to (*) Provide the science and performance metrics for development and implementation of new technology, (*) Enable an information-rich environment, firefighter training tools, and

NIST Primary Frequency Standards and the Realization of the SI Second

December 1, 2007
Author(s)
Michael A. Lombardi, Thomas P. Heavner, Steven R. Jefferts
As the base unit of time interval, the second holds a place of preeminence in the world of metrology. Time interval, and its reciprocal, frequency, can be measured with more resolution and less uncertainty than any other physical quantities. The precise

Performance of Home Smoke Alarms Analysis of the Response of Several Available Technologies in Residential Fire Settings (NIST TN 1455-1)

December 1, 2007
Author(s)
Richard W. Bukowski, Richard D. Peacock, Jason D. Averill, Thomas G. Cleary, Nelson P. Bryner, William D. Walton, Paul A. Reneke, Erica D. Kuligowski
This report presents the results of the project and provides details of the response of a range of residential smoke alarm technologies in a controlled laboratory test and in a series of real-scale tests conducted in two different residential structures

Portable X-Ray Systems for Use in Bomb Identification and Interdiction

December 1, 2007
Author(s)
Nicholas G. Paulter Jr.
The NIJ Standard for Portable X-Ray Systems is a minimum performance standard as applied to the man-portable battery-powered x-ray systems for use by bomb technicians and investigators. These systems comprise the x-ray generator, the image acquisition

The Detection and Characterization of Ions, DNA and Proteins with Nanometer-Scale Pores

December 1, 2007
Author(s)
John J. Kasianowicz, Jeffrey C. Lerman, Sarah E. Henrickson, Martin Misakian, Rekha Panchal, Kelly Halverson, Sina Bavari, Tam Nguyen, Rick Gussio, Devanand K. Shenoy, Vincent M. Stanford
Protein ion channels are nanometer-scale pores that are central to many biological processes, including the sensing of a wide variety of molecules. They have also demonstrated their potential for use in the sensitive and selective detection of ions, the

Secure Biometric Match-on-Card Feasibility Report

November 30, 2007
Author(s)
David A. Cooper, Trung-Hung Dang, Philip Lee, William I. MacGregor, Ketan Mehta
FIPS 201, "Personal Identity Verification (PIV) of Federal Employees and Contractors," and its associated special publications define a method to perform biometric match-off-card authentication of a PIV cardholder when the PIV card is inserted into a

Certification of Standard Reference Material 1476a, a Polyethylene Resin

November 29, 2007
Author(s)
Kathleen M. Flynn, S Wetzel, William R. Blair, J R. Maurey
The melt flow rate of Standard Reference Material (SRM) 1476a Branched Polyethylene Resin was determined to be 1.23g/10 min at 190 C under a load of 2.16 kg using the ASTM Method D1238-03, method A. The average results from 30 determinations yielded a

IPOG/IPOG-D: Efficient Test Generation for Multi-way Combinatorial Testing

November 29, 2007
Author(s)
Yu Lei, Raghu N. Kacker, D. Richard Kuhn, Vadim Okun, James F. Lawrence
We present two strategies for multi-way testing (i.e., t-way testing with t > 2). The first strategy generalizes an existing strategy, called In-Parameter-Order, from pairwise testing to multi-way testing. This strategy requires all t-way combinations to

Microdomain Ordering in Laterally Confined Block Copolymer Thin Films

November 29, 2007
Author(s)
August W. Bosse, Carlos Garcia-Cervera, Glenn Fredrickson
We examine the effects of small-scale, hexagonal, lateral confinement on microdomain ordering in $AB$ diblock copolymer thin films using self-consistent field theory (SCFT) simulations. Specifically, we examine a hexagonal confinement well with side length
Displaying 30826 - 30850 of 74115