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Displaying 37726 - 37750 of 74083

Residential Nuisance Source Characteristics for Smoke Alarm Testing

September 16, 2004
Author(s)
Thomas G. Cleary
Nuisance scenario tests were performed in the manufactured home used in the Home Smoke Alarm fire test series. The scenario selections were based on what are commonly thought to be causes of residential nuisance alarms, and were designed to mimic normal

The Role of Standards in a Performance-Based Building Regulatory System

September 16, 2004
Author(s)
Richard W. Bukowski
Building regulatory systems consist of regulations adopted into law through whatever legislative or administrative procedures are appropriate to the legal system in place, supported by standards that provide the detail on what is considered necessary or

Semiconductor Metrology Programs at NIST

September 15, 2004
Author(s)
Joaquin (. Martinez, Stephen Knight
The history of the National Bureau of Standards/National Institute of Standards and Technology (NBS/NIST) will be briefly reviewed emphasizing the creation of the National Semiconductor Metrology Program (NSMP) and the Office of Microelectronics Programs

Standardization of LED Measurements Updates

September 15, 2004
Author(s)
Carl C. Miller, Yoshihiro Ohno
The article describes the current LED standards and recommendations. It also discusses the work in Commission Internationale De L Eclairage Technical Committees to form new recommendations for LED measurements of total luminous flux, partial LED flux and

Adiabatic Association of Ultracold Molecules via Magnetic Field Tunable Interactions

September 14, 2004
Author(s)
K Goral, T Koehler, S A. Gardiner, Eite Tiesinga, Paul S. Julienne
We consider in detail the situation of applying a time dependent external magnetic field to a 87Rb atomic Bose-Einstein condensate held in a harmonic trap, in order to adiabatically sweep the interatomic interactions across a Feshbach resonance to produce

Microwave SQUID multiplexer

September 13, 2004
Author(s)
Kent D. Irwin, Konrad Lehnert
We describe a superconducting quantum interference device (SQUID) multiplexer operated at microwave frequencies. The outputs of multiple SQUIDs are simultaneously modulated at different frequencies, frequency-division multiplexed, and amplified using a

Vapour Pressure of Diethyl Phthalate

September 11, 2004
Author(s)
Vladimir Rohac, Kvetoslav Ruzicka, Vlastimil Ruzicka, Dzmitry H. Zaitsau, Gennady J. Kabo, Vladimir Diky, Karel Aim
Measurements of vapour pressure in the liquid phase and of enthalpy of vaporisation and results of calculation of ideal gas properties for diethyl phthalate are reported. The method of comparative ebulliometry, the static method, and the Knudsen mass loss

3rd Annual PKI R&D Workshop Proceedings

September 8, 2004
Author(s)
K I. Sankar, William Polk, Nelson Hastings
NIST hosted the third annual Public Key Infrastructure (PKI) Research Workshop on April 12-14, 2004. The two and a half day event brought together PKI experts from academia, industry, and government to explore the remaining challenges in deploying public

Antenna Gain Factor Equivanlent for TEM Cells

September 6, 2004
Author(s)
Perry F. Wilson
This paper derives a gain factor equivalent for TEM cells. The gain factor is then used in simple transmission fomulas to investigate emissions tests in TEM cells and correlation of TEM cell emissions measuremetns to other methods. The correlation

The Effects of Loading Configurations on the Performance of Reverberation Chambers

September 6, 2004
Author(s)
Christopher L. Holloway, Todd Lammers, John M. Ladbury
The presence of lossy objects in reverberation chamber may significantly disturb the reverberant environment and affect the desired field statistics. In this paper, we present a numerical study of the effects of different loading configurations on the

Structure of Polystyrene at the Interface With Various Liquids

September 4, 2004
Author(s)
Clayton S. Yang, P T. Wilson, Lee J. Richter
Vibrationally resonant sum frequency generation (VR-SFG) is used to determine the structure of the phenyl side groups of deuterated polystyrene at the liquid/solid interface for the nonsolvent liquids: hexane, methanol, ethanol, glycerol, and water. The

Structure of Alanine Dehydrogenase from Archaeoglobus: Active Site Analysis and Relation to Bacterial Cyclodeaminases and Mammalian mu Crystallin

September 3, 2004
Author(s)
David T. Gallagher, H G. Monbouquette, I Schroder, Hugh Robinson, Marcia J. Holden, N Smith
The hyperthermophilic archaeon Archaeoglobus fulgidus contains an L-Ala dehydrogenase (AlaDH, EC 1.4.1.1) that is not homologous to known bacterial dehydrogenases and appears to represent a previously unrecognized archaeal group of NAD-dependent

Letter Report of a Life Cycle Cost Analysis for GSA Chillers

September 2, 2004
Author(s)
Mark A. Kedzierski
A life-cycle-cost analysis revealed that the combined GSA regions would save nearly half a billion dollars over 15 years in electricity costs with a hypothetical 30 % increase in chiller efficiency. The largest savings were apparent for GSA regions 2, 4, 7

4p 6 4d 8 -(4d 7 5p+4d 7 4f+4p 5 4d 9 ) Transitions in Xe XI

September 1, 2004
Author(s)
S S. Churilov, Y N. Joshi, Joseph Reader, R R. Kildiyarova
The spectrum of ten-times ionized xenon Xe XI was observed in the region 105 Angstrom} to 157 Angstrom} with a low-inductance vacuum spark and a 10.7 m grazing-incidence spectrograph. About 200 lines belonging to the 4p 64d 8-(4d 75p+4d 74f+4p 54d 9)

A Neutral Data Interface Specification for Simulating Machine Shop Operations

September 1, 2004
Author(s)
Yung-Tsun Lee, Charles R. McLean
In most cases, the effort required to develop a meaningful simulation for a small machine shop exceeds the resources available. Machine shops typically do not have staff with appropriate technical qualifications required to develop custom simulations of

Accuracy limits for simple molecular absorption based wavelength references

September 1, 2004
Author(s)
William C. Swann, Sarah L. Gilbert
We present limitations on the characterization and use of molecular absorption lines for wavelength calibration purposes. These limits assume a Doppler and pressure-broadened absorption spectrum obtained by transmitting light through a simple gas cell

An Integrating Framework for Modeling and Simulation for Emergency Response

September 1, 2004
Author(s)
Sanjay Jain, Charles R. McLean
A number of modeling and simulation tools have been developed and more are being developed for emergency response applications. Each of these tools has focused on a specific aspect of the selected problem, for example, the modeling of spread of an agent
Displaying 37726 - 37750 of 74083