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Displaying 41751 - 41775 of 74203

Joint Distribution of Link Distances

March 1, 2003
Author(s)
Leonard E. Miller
The calculation of two-hop connectivity between two terminals for randomly deployed wireless networks requires the joint probability distribution of the distances between these terminals and the terminal that is acting as a relay. In general the distances

Large Fires: Kuwait (NIST SP 995)

March 1, 2003
Author(s)
Daniel M. Madrzykowski, D. D. Evans, G A. Haynes
A series of measurements were made in the Al Mawqa/Al Ahmadi oil field region of Kuwait to explore the feasibility of assessing the heat release rate of individual well fires through flame height and thermal radiation measurements. The 12 fires measured

Line Assignments and Global Analysis of the Tunneling-Rotational Microwave Absorption Spectrum of Dimethyl Methylphosphonate

March 1, 2003
Author(s)
N Ohashi, J Pyka, G Y. Golubiatnikow, Jon T. Hougen, R D. Suenram, Francis J. Lovas, A Lesarri, Y Kawashima
Line assignments were carried out for about 600 Fourier transform microwave transitions for dimethyl methylphosphonate involving levels of all six symmetry species in the G 18 molecular symmetry group appropriate for three large-amplitude motions and

Literature Review on Enclosure of Elevator Lobbies

March 1, 2003
Author(s)
D W. Stroup
A literature survey was conducted to explore the need and appropriate systems for protecting elevator lobbies from smoke migration. The focus is on smoke spread through elevator shafts and lobbies, building occupant and fire fighter use of elevators during

Magnetic Thin Film Interlaboratory Comparison

March 1, 2003
Author(s)
Fabio C. da Silva, David P. Pappas, C. M. Wang
A potential low magnetic moment standard reference material (SRM) was studied in an interlaboratory comparison. The mean and the standard deviation of the saturation moment m s, the remanent moment m r, and the intrinsic coercivity H c of nine samples were

Magnetization Dynamics Modeled in Magnetic Thin Films

March 1, 2003
Author(s)
Robert D. McMichael
One of the challenges facing designers of high data rate computer hard drives and magnetic memory chips is that for most magnetic metals, it typically takes a fewnanoseconds for the magnetization to come to rest after it has been switched or bumped by a

Managing Content and E-Resources on the NIST Virtual Library (NVL)

March 1, 2003
Author(s)
Susan L. Makar
In May 2002, the Information Services Division (ISD) of Technology Services (TS) at the National Institute of Standards and Technology (NIST) implemented a content management system that greatly facilitates maintenance of the Division's Web site, the NIST

Measured Performance of a 35 Kilowatt Roof Top Photovoltaic System

March 1, 2003
Author(s)
Arthur H. Fanney, E R. Weise, K R. Henderson
A 35-kilowatt roof top photovoltaic system has been installed at the National Institute of Standards and Technology (NIST) in Gaithersburg, Maryland. The system, located on a the roof that connects NIST s Administration Building to its adjoining conference

Measurement of Large Scale Oil Spill Burns (NIST SP 995)

March 1, 2003
Author(s)
D D. Evans, William D. Walton, Howard R. Baum, James R. Lawson, Ronald G. Rehm, Richard H. Harris Jr., A Ghoniem, J Holland
Research has shown that burning can be an effective means to remove oil from the surface of the water. The combustion characteristics of crude oil have been measured in large laboratory tests using a nominal one meter diameter pool fire. This work reports

Modeling Distributed Kinetics in Isolated Semiconductor Quantum Dots

March 1, 2003
Author(s)
M Kuno, D P. Fromm, S T. Johnson, Alan Gallagher, David Nesbitt
tailed modeling of recently observed nonexponential fluorescence intermittency in colloidal semiconductor quantum dots (QDs) is presented. In particular, experiments have shown that both on-time and off-time probability densities generated from single-QD

NDRL/NIST Solution Kinetics Database on the WEB

March 1, 2003
Author(s)
Robert E. Huie
A Solution Kinetics Database, jointly created byNIST and the Notre Dame Radiation Laboratory, hasbeen made available on the Internet in a format similarto that utilized by the popular NIST KineticsDatabase, which covers gas-phase reactions. TheSolution

Near-Field Polarimetric Characterization of Semi-Crystalline Polymer Systems

March 1, 2003
Author(s)
S N. Goldie, Michael J. Fasolka, Lori S. Goldner, Jeeseong C. Hwang, Kathryn Beers
We have studied crystallization in thin films of isotactic polystyrene (iPS) to better understand the morphology and formation of these structures through the use of polarization modulation near-field scanning optical microscopy (PM-NSOM). Polymer

NVLAP Partnerships With NIST Technical Units

March 1, 2003
Author(s)
Hazel M. Richmond, C D. Faison
This report provides NIST managers with an overview of the range and types of technical partnerships between Technology Services' National Laboratory Accreditation Program (NVLAP) and NIST Technical Units. It provides a description of NVLAP programs, and

OH Reactivity and UV Spectra of Propane, n-Propyl Bromide, and Isopropyl Bromide

March 1, 2003
Author(s)
S N. Kozlov, Vladimir L. Orkin, Robert E. Huie, Michael J. Kurylo III
The rate constants for the reactions of OH radicals with the 1-bromopropane, 2-bromopropane, and propane were measured using the flash photolysis reasonance fluorescence technique over the temperature range between 210 K and 480 K. Arrhenius plots exhibit
Displaying 41751 - 41775 of 74203
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