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Displaying 14476 - 14500 of 17285

Isochoric P-r-T Measurements for 2,2-Dichloro-1,1,1-Trifluoroethane (R123) at Temperatures from 176 to 380 K and 1-Chloro-1,2,2,2-Tetrafluorethane (R124) from 104 to 400 K at Pressures to 35 Mpa

November 1, 2000

Author(s)

Joe W. Magee

The p-p-T relationships were measured for 2,2-dichloro-1,1,1-trifluoroethane (R123) and 1-chloro-1,2,2,2-tetrafluoroethane (R124) by an isochoric method with gravimetric determinations of the amount of substance. Temperatures ranged from 176 to 380 K for

Thermal Radiation From Large Pool Fires (NISTIR 6546)

November 1, 2000

Author(s)

Kevin B. McGrattan, Howard R. Baum, Anthony P. Hamins

… and Fire Research Laboratory at the National Institute of Standards and Technology (NIST) of the 1975 HUD guidelines …

NIST - SFB Workshop Identifies Needs for Reference Data and Reference Materials

October 1, 2000

Author(s)

John A. Tesk

… identified at a workshop held at the National Institute of Standards and Technology (NIST) on July 27, 2000 and …

Automatic Generation of Simulation Models from Neutral Libraries: An Example

July 1, 2000

Author(s)

Albert T. Jones, R A. Wysk, Y J. Son

… Researchers at the National Institute of Standards and Technology have proposed the development of …

Representation of Heterogeneous Objects in ISO 10303 (STEP)

July 1, 2000

Author(s)

Lalit Patil, D Dutta, Amba D. Bhatt, Kevin K. Jurrens, Kevin W. Lyons, Mike Pratt, Ram D. Sriram

Solid modeling of objects forms an important task in design and manufacturing. Recent developments in the field of layered manufacturing have shown potential for the physical realization of heterogeneous (multi-material) objects. Thus, there is a need to

Electronic Structure of BC1 Determined by ab Initio Calculations and Resonance-Enhanced Multiphoton Ionization Spectroscopy

March 14, 2000

Author(s)

Karl K. Irikura, Russell D. Johnson III, Jeffrey W. Hudgens

The mass-resolved, one-color, 2 + 1 resonance-enhanced multiphoton ionization spectrum of transient boron monochloride (BC1) between 348 nm and 369 nm is reported. Vibrational and rotational bands of the ^10^B^35^C1, ^11^B^35^C1, ^10^B^37^C1, and ^11^B^37

SIMnet Design and Internet Deployment Guide

December 29, 1999

Author(s)

Richard D. Schneeman

… state-of-the-art newly emerging international multimedia standards from the International Telecommunications Union …

On-Wafer Measurements of Noise Temperature

December 1, 1999

Author(s)

James P. Randa, Robert L. Billinger

The NIST Noise Project has developed the theoretical formalism and experimental methods for performing accurate noise-temperature measurements on wafer. This report summarizes the theoretical formulation and describes the design, methods, and results of

Process Representation Using Architectural Forms: Accentuating the Positive

December 1, 1999

Author(s)

Joshua Lubell, Craig I. Schlenoff

The PSL (Process Specification Language) project is creating a standard language for process specification to serve as an interlingua to integrate multiple process-related applications throughout the manufacturing life cycle. This interchange language is

Reference Verification Fluids for Flash Point Determination

November 1, 1999

Author(s)

R G. Montemayor, J E. Rogerson, Jennifer C. Colbert, Susannah B. Schiller

… was conducted to determine alternate flash point reference standards. This study reports the flash points of n-decane, …

Incoporating Process Planning into Conceptual Design

September 1, 1999

Author(s)

Shaw C. Feng, Gordon A. Shaw, Walter W. Nederbragt, Serge Kaing, Ram D. Sriram

… Integration (DPPI) project at the National Institute of Standards and Technology (NIST). The project addresses the …

Exchange Coupling in Magnetic Multilayers Grown on Iron Whiskers

August 20, 1999

Author(s)

john unguris, Robert Celotta, D Tulchinsky, Daniel T. Pierce

Meaningful tests of theoretical predictions of magnetic multilayer properties require the fabrication of multilayers with nearly the same atomic scale precision as the theoretical models. Multilayers grown epitaxially on single crystal Fe whisker

Kinetic Studies of the Reactions of IO Radicals Determined by Cavity Ring-Down Spectroscopy

July 14, 1999

Author(s)

D B. Atkinson, Jeffrey W. Hudgens, A J. Orr-Ewing

We demonstrate the application of cavity ring-down spectroscopy (CRDS) to the measurement of concentrations of IO radical and of reaction rate coefficients for the reaction systems, IO+IO and IO+NO, using the source reaction, O( 3P)+CF 3I. By monitoring IO

Microscopic Image Analysis of Defect Areas in Optical Disks

July 1, 1999

Author(s)

P L'Hostis, Frederick R. Byers, Fernando L. Podio, Xiao Tang

… Technology Laboratory of the US National Institute of Standards and Technology (NIST/ITL) for enabling microscopic …

Performance of Tape-Bonded Seams of EPDM Membranes: Resistance to Peel-Creep

June 1, 1999

Author(s)

Walter J. Rossiter Jr, M Vangel, K M. Kraft

This paper provides a summary of the major results of an industry-government consortium study on the creep resistance of tape-bonded seams of EPDM roof membranes. The study was undertaken to compare the creep-rupture performance of tape-bonded and liquid

Software to Optimize the Testing of Mixed-Signal Devices

June 1, 1999

Author(s)

Gerard N. Stenbakken, Andrew D. Koffman, T. M. Souders

… prediction methods developed at the National Institute of Standards and Technology (NIST) to reduce the cost of …

Component Specifications for Robotics Integration

May 1, 1999

Author(s)

Elena R. Messina, John A. Horst, Thomas R. Kramer, Hui-Min Huang, John L. Michaloski

… to his or her system. At the National Institute of Standards and Technology, we have developed a three-stage, …

The Molar Volume of Silicon: Discrepancies and Limitations

April 1, 1999

Author(s)

R Deslattes, Ernest G. Kessler

… accounting of the early work at the National Bureau of Standards (NBS). Removal of a poorly documented correction to …

Results and Challenges in Web Search Evaluation

March 1, 1999

Author(s)

D Hawking, Nick Craswell, P Thistlewaite, Donna Harman

A frozen 18.5 million page snapshot of part of the Web has been created to enable and encourage meaningful and reproducible evaluation of Web search systems and techniques. This collection is being used in an evaluation framework within the Text Retrieval

Electron Beam Induced X-Ray Emission: An In Situ Probe for Composition Determination During Molecular Beam Epitaxy Growth

December 1, 1998

Author(s)

Joseph G. Pellegrino, J T. Armstrong, J R. Lowney, B. Dicamillo, J C. Woicik

… compares reasonably well with RHEED. Well-characterized standards are required for quantitative analysis of the …

Modified Slump Test to Measure Rheological Parameters of Fresh Concrete

December 1, 1998

Author(s)

Chiara F. Ferraris, F DeLarrard

The ease of placement of concrete depends upon at least two physical properties, the yield stress and plastic viscosity. Currently the most common field test is the slump test, and it is related only to the yield stress. Therefore, a simple field test

Optimization of Temperature Programmed Sensing for Gas Identification Using Micro-Hotplate Sensors

November 26, 1998

Author(s)

T A. Kunt, T. J. McAvoy, Richard E. Cavicchi, Stephen Semancik

… such as those being developed at the National Institute of Standards and Technology [NIST] by micromaching SI, can be …

Initial Results of the Bidirectional Reflectance Characterization Round-Robin in Support of EOS

October 1, 1998

Author(s)

Bettye C. Johnson, P Y. Barnes, Thomas R. O'Brian, James J. Butler, C J. Bruegge, S F. Biggar, P R. Spyak, M M. Pavlov

… round-robin intercomparison with the National Institute of Standards and Technology (NIST) as the central laboratory was …

A New NIST Automated Calibration System for Industrial-Grade Platinum Resistance Thermometers

September 1, 1998

Author(s)

Gregory F. Strouse, Billy W. Mangum, C D. Vaughn, E Xu

Industrial-grade platinum resistance thermometers (IPRTs) are calibrated at NIST using a newly automated calibration system. The computer-controlled data-acquisition system is used to calibrate IPRTs over the range from -196 degrees C to 550 degrees C

Comparison of High Voltage Thermal Converter Scaling to a Binary Inductive Voltage Divider

July 1, 1998

Author(s)

Joseph R. Kinard Jr., Thomas E. Lipe Jr., Clifton B. Childers, S. Avramov

… High-voltage thermal converters (HVTCs) are used as standards of ac-dc difference and for the measurement and …

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