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NIST Authors in Bold

Displaying 46151 - 46175 of 74337

Analysis of a Dual-Balance HIgh Resistance Bridge at 10 T{O}

April 1, 2001
Author(s)
Dean G. Jarrett
The NIST guarded active-arm bridge, using a third dc source and a second detector to balance the guard network, is described. Improvements to the NIST active-arm bridge and the design and construction of improved high resistance standards have facilitated

Analysis of Broadband X-Ray Spectra of Highly Charged Krypton From a Microcalorimeter Detector of an Electron-Beam Ion Trap

April 1, 2001
Author(s)
I Kink, J M. Laming, E Takacs, James V. Porto, John D. Gillaspy, E Silver, H. Schnopper, Simon R. Bandler, M Barbera, N Brickhouse, S Murray, N. Madden, D Landis, J. Beeman, E. E. Haller
Spectra of highly charged Kr ions, produced in an EBIT, have been recorded in a broad x-ray energy band (0.3-4 keV) with a microcalorimeter detector. Most of the spectral lines have been identified as transitions of B- to Al-like Kr. The transition

Antenna System Guide

April 1, 2001
Author(s)
W. A. Kissick, W J. Ingram, J M. Vanderau, R D. Jennings, Sharon E. Ellison
Radio communications are essential to the operations of Federal, State, and local law enforcement and correction agencies. Effective and reliable communications systems not only enable personnel to perform their functions efficiently, but also help ensure

BLCC 5.0-01.

April 1, 2001
Author(s)
S Fuller, A S. Boyles
The BLCC5 Building Life-Cycle Cost Program provides economic analysis of projects for which both initial capital costs and future operational costs need to be considered. The program is useful for evaluating the long-term costs and savings of energy and

Causality and Waveguide Circuit Theory

April 1, 2001
Author(s)
Darren F. Williams, Bradley Alpert
We develop a new causal power-normalized wave-guide equivalent-circuit theory that, unlike its predecessors, results in network parameters usable in both the frequency and time domains in a broad class of waveguides. Enforcing simultaneity of the voltages

Characterization of Symmetric Diblock Copolymers With High-Throughput Techniques

April 1, 2001
Author(s)
Alamgir Karim, A P. Smith, Jack F. Douglas, Eric J. Amis
Surface pattern formation in thin block copolymer films is investigated utilizing a high-throughput methodology by creating films having gradients in film thickness. We observe a succession of surface patterns that repeat cyclically across the film with

Collisional Frequency Shifts in 133 Cs Fountain Clocks

April 1, 2001
Author(s)
P J. Leo, Paul S. Julienne, F H. Mies, Carl J. Williams
We present a theoretical analysis of the pressure shift in Cs fountain clocks using the highly constrained binary collision model described by Leo et al. [Phys. Rev. Lett. xx, xx (2000)]. We predict a reversal in the pressure shift at temperatures near 0

Comparison Between the SNS and SIS Josephson Voltage Standards at OFMET

April 1, 2001
Author(s)
Blaise Jeanneret, Alain Rufenacht, Charles J. Burroughs
Recently, a new Josephson voltage standard based on a lV programmable chip provided by the National Institute of Standards and Technology (NIST) was impemented at the Swiss Federal Office of Metrology (OFMET). A comparison with a conventional Josephson

Comparison of FDS Model Predictions With FM/SNL Fire Test Data.

April 1, 2001
Author(s)
Frederick W. Mowrer, P A. Friday
The Fire Dynamics Simulator (FDS), a recently developed field tire model based on large eddy simulation (LES), is used to simulate seven full-scale fire tests. The fire tests were conducted in a large mechanically ventilated enclosure with dimensions of 18

Concrete Mixing Methods and Concrete Mixers: State of the Art

April 1, 2001
Author(s)
Chiara F. Ferraris
The performance of concrete is determined by its microstructure. Its microstructure, in turn, is determined by its composition, its curing conditions, and also by the mixing method used to process the concrete. This paper gives an overview of the various
Displaying 46151 - 46175 of 74337
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