31 Matching Results

Search Results

Advanced search parameters have been applied.
in creator/contributor: "National Institute of Standards and Technology U.S."  
Results: 1 - 24 next
open access

AC-DC Difference Calibrations

Description: Abstract: This publication collects and summarizes the specialized information needed to operate the ac-dc difference laboratory and calibration service at NIST (Gaithersburg). It also serves as a convenient reference source for the users of this calibration service and other interested people by documenting the service and its underlying background in considerable detail. It contains the following: an annotated table of contents, a topical index, and a glossary of common ac-dc acronyms; an ove… more
Date: May 1989
Creator: Kinard, J. R.; Hastings, J. R.; Lipe, T. E. & Childers, C. B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Facilities, National Institute of Standards and Technology

Description: From page 2: The National Institute of Standards and Technology research reactor is a national center for the application of reactor radiation to a variety of problems of national concern. Major program areas at the reactor include the application of neutron scattering methods to research in materials science, trace analysis by neutron activation, nondestructive evaluation (via neutron radiography and scattering), neutron standards and dosimetry , and isotope production and radiation effects.
Date: January 5, 1989
Creator: National Institute of Standards and Technology (U.S.)
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

NBS-INA -- The Institute for Numerical Analysis -- UCLA 1947-1954

Description: Abstract: This is the history of the Institute for Numerical Analysis (INA) with special emphasis in its research program during the period 1947 to 1956. The Institute for Numerical Analysis was located on the campus of the University of California, Los Angeles. It was a section of the National Applied Mathematics Laboratories, which formed the Applied Mathematics Division of the National Bureau of Standards (now the National Institute of Standards and technology), under the U.S. Department of … more
Date: August 1991
Creator: Hestenes, Magnus Rudolph & Todd, John
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Standard Reference Data Publications, 1987-1989

Description: Abstract: The National Institute of Standards and Technology's Standard Reference Data Program manages a network of data centers that prepare evaluated databases of physical and chemical properties of substances. Databases are available in printed form, on magnetic tapes, diskettes, and through on-line computer networks. This document provides a comprehensive list of the products available from the National Standard Reference Data System (NSRDS) for the years 1987-1989, including indexes qualif… more
Date: December 1989
Creator: Sauerwein, Joan C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Mass Calibrations

Description: Abstract: The NIST calibration service for standard masses is described. Weights which are accepted for calibration range in nominal values from 1 mg to 13,600 kg (30,000 pounds). We also accept weights used to generate standard pressures in piston gages. Cleaning procedures used on weights prior to calibration are described. The measurement algorithms (including density determinations of single-piece kilogram weights) and the uncertainties assigned to calibrated weights are discussed. We also … more
Date: January 1989
Creator: Davis, R. S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Liquid-in-Glass Thermometer Calibration Service

Description: Abstract: This document gives a description of the calibration of liquid-in-glass thermometers at the National Bureau of Standards. The calibration equipment and procedures used at NBS are discussed in detail. Calculations and stem-temperature corrections are shown and a discussion of the sources of error encountered in calibration and estimates of uncertainties is presented.
Date: September 1988
Creator: Wise, Jacquelyn A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

A U.S. Carbon Cycle Science Plan

Description: Report assessing the carbon cycle and providing guidance for U.S. researchers. It includes background on the history and context of the carbon cycle and previous science plan as well as chapters describing relevant fundamental science questions, science plan goals, the plan elements, interdisciplinary and international collaboration and cooperation, implementation and funding of the plan, and references with supplementary appendix information.
Date: August 2011
Creator: Michalak, Anna M.; Jackson, Robert B.; Marland, Gregg & Sabine, Christopher L.
Item Type: Refine your search to only Report
Partner: UNT Libraries
open access

Research for electric energy systems -- an annual report

Description: This report documents the technical progress in the two investigations which make up the project {open_quotes}Support of Research Projects for Electrical Energy Systems,{close_quotes} Department of Energy Task Order Number 137, funded by the US Department of Energy and performed by the Electricity Division of the National Institute of Standards and Technology (NIST). The first investigation is concerned with the measurement of magnetic fields in support of epidemiogical and in vitro studies of … more
Date: October 1993
Creator: Anderson, W. E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Research for Electric Energy Systems

Description: This report documents the technical progress in investigations. The first investigation is concerned with the measurement of magnetic fields in support of epidemiogical and in vitro studies of biological field effects. NIST cohosted a workshop on exposure and biological parameters that should be considered during the vitro studies with extremely low frequency (ELF) magnetic and electric fields. Also, equations were developed to predict the magnetic field in a parallel plate magnetic field expos… more
Date: June 1991
Creator: Anderson, W. E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Applying New Methods to Research Reactor Analysis.

Description: Detailed reactor physics and safety analyses are being performed for the 20 MW D{sub 2}O-moderated research reactor at the National Institute of Standards and Technology (NIST). The analyses employ state-of-the-art calculational methods and will contribute to an update to the Final Safety Analysis Report (FSAR). Three-dimensional MCNP Monte Carlo neutron and photon transport calculations are performed to determine power and reactivity parameters, including feedback coefficients and control elem… more
Date: February 5, 2004
Creator: Diamond, David J.; Cheng, L.; Hanson, A.; Xu, J. & Carew, J. F.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Local Burn-Up Effects in the NBSR Fuel Element

Description: This study addresses the over-prediction of local power when the burn-up distribution in each half-element of the NBSR is assumed to be uniform. A single-element model was utilized to quantify the impact of axial and plate-wise burn-up on the power distribution within the NBSR fuel elements for both high-enriched uranium (HEU) and low-enriched uranium (LEU) fuel. To validate this approach, key parameters in the single-element model were compared to parameters from an equilibrium core model, inc… more
Date: January 2013
Creator: Brown, N. R.; Hanson, A. L. & Diamond, D. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

FALCON: Boosting Knowledge for Answer Engines

Description: This paper discusses FALCON, an answer engine that integrates different forms of syntactic, semantic and pragmatic knowledge for the goal of achieving better performance.
Date: November 2000
Creator: Harabagiu, Sanda M.; Moldovan, Dan I.; Paşca, Marius. 1974-; Mihalcea, Rada, 1974-; Surdeanu, Mihai; Bunescu, Răzvan et al.
Item Type: Refine your search to only Paper
Partner: UNT College of Engineering
open access

Answering complex, list and context questions with LCC's Question-Answering Server

Description: This paper presents the architecture of the Question-Answering server (QAS) developed at the Language Computer Corporation (LCC) and used in the TREC-10 evaluations.
Date: November 2001
Creator: Harabagiu, Sanda M.; Moldovan, Dan I.; Paşca, Marius. 1974-; Surdeanu, Mihai; Mihalcea, Rada, 1974-; Gîrju, Corina R. et al.
Item Type: Refine your search to only Paper
Partner: UNT College of Engineering
open access

Glass Bottles for Carbonated Soft Drinks

Description: Report establishing a Voluntary Product Standard for glass bottles for carbonated soft drinks intended to improve safety performance by establishing nationally recognized manufacturing requirements for conventional glass bottles designed as containers for carbonated soft drinks. This Standard is intended to provide producers, distributors, users and other interested groups with a basis for common understanding of the characteristics of these products (p. 1). Scope, terminology, performance requ… more
Date: July 1989
Creator: National Institute of Standards and Technology (U.S.)
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Measurment of Depositing and Bombarding Species Involved in the Plasma Production of Amorphous Silicon and Silicon/Germanium Solar Cells: Annual Technical Report, 1 June 2002 - 31 May 2005

Description: The objective of this study is to measure the molecular species that lead to the growth of hydrogenated amorphous silicon (a-Si:H) and microcrystalline silicon (..mu..c-Si) photovoltaic (PV) devices from RF discharges. Neutral radicals produce most of the film growth during this PV-device production, and, by implication, radicals primarily determine the device structure and electrical characteristics. The most important feature of the present experiment is thus the measurement of neutral-radica… more
Date: June 1, 2006
Creator: Gallagher, A.; Rozsa, K.; Horvath, P. & Kujundcik, D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department

Power Quality

Description: Poster prepared by the National Institute of Standards and Technology (NIST) Power Quality Committee informing users of sensitive equipment about problems with and solutions for protecting their equipment from power disturbances. Included are answers to seven common questions about power quality; a chart describing the types of power disturbances, the equipment affected, and a summary of the types of protection equipment that is effective against the disturbance, and a glossary of common power … more
Date: July 1989
Creator: National Institute of Standards and Technology (U.S.). Power Quality Committee
Item Type: Refine your search to only Poster
Partner: UNT Libraries Government Documents Department

Power Quality

Description: Poster prepared by the National Institute of Standards and Technology (NIST) Power Quality Committee informing users of sensitive equipment about problems with and solutions for protecting their equipment from power disturbances. Included are answers to seven common questions about power quality; a chart describing the types of power disturbances, the equipment affected, and a summary of the types of protection equipment that is effective against the disturbance, and a glossary of common power … more
Date: October 1990
Creator: National Institute of Standards and Technology (U.S.). Power Quality Committee
Item Type: Refine your search to only Poster
Partner: UNT Libraries Government Documents Department
open access

RELAP5 Application to Accident Analysis of the NIST Research Reactor

Description: Detailed safety analyses have been performed for the 20 MW D{sub 2}O moderated research reactor (NBSR) at the National Institute of Standards and Technology (NIST). The time-dependent analysis of the primary system is determined with a RELAP5 transient analysis model that includes the reactor vessel, the pump, heat exchanger, fuel element geometry, and flow channels for both the six inner and twenty-four outer fuel elements. A post-processing of the simulation results has been conducted to eval… more
Date: March 18, 2012
Creator: Baek, J.; Cuadra Gascon, A.; Cheng, L. Y. & Diamond, D.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Planning the HEU to LEU Transition for the NBSR

Description: A study has been carried out to understand how the NIST research reactor (NBSR) might be converted from using high-enriched uranium (HEU) to using low-enriched uranium (LEU) fuel. An LEU fuel design had previously been determined which provides an equilibrium core with the desirable fuel cycle length - a very important parameter for maintaining the experimental, scientific program supported by the NBSR. In the present study two options for getting to the equilibrium state are considered. One op… more
Date: September 12, 2011
Creator: Hanson, A. L. & Diamond, D.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
Back to Top of Screen