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The Measurement of Noise Performance Factors: A Metrology Guide
From Introduction: "The purpose of this guide is to describe, discuss, and analyze methods of measuring the average noise factor and average effective input noise temperature of an electronic transducer."
Date:
June 1974
Creator:
Arthur, M. G. & Anson, W. J.
System:
The UNT Digital Library
The Characterization of Optical Fiber Waveguides: A Bibliography with Abstracts, 1970-1980
Abstract: This bibliography contains approximately 450 citations of papers concerning the characterization of optical fiber waveguides. Papers from scientific journals, trade journals and conferences are included along with book chapters. The citations of organized by parameter measured and measurement method. Where published abstracts are available they are included.
Date:
June 1981
Creator:
Day, G. W.
System:
The UNT Digital Library
Annual Report of the Director of the Bureau of Standards to the Secretary of Commerce for the Fiscal Year Ended June 30, 1922
Annual report of the director of the U.S. National Bureau of Standards discussing the staff, facilities, and activities of the agency during the fiscal year 1921-1922.
Date:
1922
Creator:
Stratton, S. W.
System:
The UNT Digital Library
Physical Properties Data for Rock Salt
From Introduction Monograph Organization: "The Monograph is in six chapters covering the geological, mechanical, optical, thermal, radiation damage, electrical, magnetic, chemical, and physical properties of rock salt and pure NaCl. Each chapter has been written by a different author, or authors, consistent with his field of expertise."
Date:
January 1981
Creator:
Gevantman, L. H.; Lorenz, J.; Haas, J. L., Jr.; Clynne, M. A.; Schafer, C. M.; Potter, R. W., Jr. et al.
System:
The UNT Digital Library
U.S. Bureau of Standards Annual Report: 1921
Report describing the functions and operations of the United States Bureau of Commerce and its divisions during the fiscal year.
Date:
July 1921
Creator:
United States. Bureau of Standards.
System:
The UNT Digital Library
Directory of Accredited Laboratories: 1984
Abstract: Laboratories accredited by the National Voluntary Laboratory Accreditation Program (NVLAP) are identified along with the specific test methods for which they are accredited. The current status of existing accreditation programs is given for laboratories that test thermal insulation, freshly mixed concrete, carpet, wood burning stoves, paint, and personnel radiation dosimeters, and that provide acoustical testing services. Indexes are provided for searching the Directory for laboratories accredited in specific testing areas or for specific test methods.
Date:
February 1985
Creator:
NVLAP (Program : U.S.)
System:
The UNT Digital Library
Trace Characterization: Chemical and Physical
From Introduction: "This symposium focuses attention on the growing awareness of the necessity for developing and using better methods for characterizing solids. Many of the most interesting properties of solids depend directly upon these small concentrations of impurities and defects, and the illustration of this is a principal theme of this paper."
Date:
April 28, 1967
Creator:
Meinke, W. Wayne & Scribner, Bourdon F.
System:
The UNT Digital Library
Technology of Liquid Helium
From Abstract: "This treatise is a source document containing information on helium resources, production, conservation, thermodynamic properties, liquefaction and refrigeration techniques, transportation and storage of liquid and safety requirements. It also contains a discussion of uses for liquid and cold gas in cryoelectronics, superconductivity, bubble chambers, cryopumping and missile and space systems."
Date:
October 1968
Creator:
Kropschot, R. H.; Birmingham, B. W. & Mann, D. B.
System:
The UNT Digital Library
Energy Dispersive X-Ray Spectrometry
Abstract: Energy-dispersive x-ray analysis with gas proportional detectors has been used widely in x-ray spectrochemical analysis. It was particularly useful in the detection of low-energy x-ray emission, before the commercial availability of the Blodgett-Langmuir pseudocrystals. With the development of solid-state x-ray detectors of high resolution, and improvement in associated electronics and computers, the interest in energy-dispersive x-ray analysis has increased enormously, to the point where it has replaced Bragg crystal diffraction spectrometry in many instances.
Date:
March 1981
Creator:
Heinrich, Kurt F. J.; Newbury, Dale E.; Myklebust, R. L. & Fiori, C. E.
System:
The UNT Digital Library
Methods for the Dynamic Calibration of Pressure Transducers
From Introduction Statement of Objectives: "The purpose of this publication is to provide assistance to the practicing engineer who is faced with the problem of making dynamic measurements of rapidly changing pressures."
Date:
December 12, 1963
Creator:
Schweppe, J. L.; Eichberger, L. C.; Muster, D. F.; Michaels, E. L. & Paskusz, G. F.
System:
The UNT Digital Library
Bibliographies of Industrial Interest : Thermodynamic Measurements on the Systems CO₂-H₂O, CuCl₂-H₂0,H₂SO₄-H₂O, NH₃-H₂O, H₂S-H₂O, ZnCl₂-H₂Oand H₃PO₄-H₂O
Abstract: Contained herein are bibliographies of Sources of experimental and correlated thermodynamic data for seven binary aqueous mixtures of industrial importance, namely mixtures of CO2, H2S, NH3, H2S0, H3P4, CuCl2 and ZnCl2 with water. The categories of equilibrium data included in the bibliographies are activity and osmotic coefficients, equilibria in solution, enthalpies and heat capacity data, vapor-liquid equilibria, and phase equilibrium data.
Date:
September 1986
Creator:
Staples, B. R.; Garvin, D.; Smith-Magowan, D.; Jobe, T. L., Jr.; Jackson, C. R.; Wobbeking, T. F. et al.
System:
The UNT Digital Library
Colorimetry
"The definition of color, as a characteristics of light, and the basic principles of its measurement are given. The reduction of spectrophotometric data to three chromaticity coordinates by means of the three-function CIE standard observer system for colorimetry is described. Various methods of direct colorimetry, and visual and photoelectric methods of colorimetry by differences from material standards are treated" (p. 1).
Date:
January 1968
Creator:
Nimeroff, I.
System:
The UNT Digital Library
Standard Reference Data Publications, 1964-1984
Abstract: The National Bureau of Standards' Office of Standard Reference Data manages a network of data centers that prepare evaluated data bases of physical and chemical properties of substances. Data bases are available in printed form, on magnetic tapes 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 1964-1984, including indexes qualified by author, material, and property terms. Ordering information and current prices can be found at the end of this document.
Date:
December 1985
Creator:
Sauerwein, Joan C. & Dalton, Geraldine R.
System:
The UNT Digital Library
Report of the Seventieth National Conference on Weights and Measures, 1985
Report of the annual conference on weights and measures, hosted by the U.S. National Bureau of Standards in Washington D.C. It includes conference proceedings, a list of attendees, information about committees and officers, and other reports or commentaries discussed at the meetings.
Date:
November 1985
Creator:
United States. National Bureau of Standards.
System:
The UNT Digital Library
Measures for Progress: a History of the National Bureau of Standards
Definitive history of the United States National Bureau of Standards.
Date:
1966
Creator:
Cochrane, Rexmond C.
System:
The UNT Digital Library
OMNITAB 80: An Interpretive System for Statistical and Numerical Data Analysis
Abstract: OMNITAB 80 is a highly integrated general purpose programming language and statistical software computing system. The system enables the user to use a digital computer to perform statistical and numerical data analysis without having any prior knowledge of computers or programming languages. The system responds to simple instructions to obtain accurate results since reliable, varied and sophisticated algorithms for data analysis and manipulation are referenced. It may be used either interactively or in batch mode. OMNITAB 80 has been installed nationally and internationally. OMNITAB has been completely written to make it as machine independent as possible This document describes Version 6.0. Details are presented so that the user can easily find the specific information needed in any particular instance. Part A is a simple, compact introduction to OMNITAB. Part B describes the general and special features of the OMNITAB system. Part C gives explanations, with short examples, for the use of specific instructions. Part D is a complete alphabetical list of the instructions which are in the system.
Date:
November 1986
Creator:
Peavy, Sally T.; Bremer, Shirley G.; Varner, Ruth N. & Hogben, David
System:
The UNT Digital Library
Optical Time-Domain Reflectometer Performance and Calibration Studies
from Introduction: The measurement accuracy of the optical time-domain reflectometer (OTDR) is restricted in some applications by a limited operational dynamic range and by a lack of standardized test procedures. In an effort to better understand these restrictions, we have measured the range of linearity of some avalanche photodiodes used as backscatter detectors. Also, the effect of input launch conditions is examined and a possible standardized OTDR test procedure is proposed. Using these suggestions, we have made comparisons between attenuation values determined by cutback and backscatter methods and found that good agreement is possible. Finally, some methods are described for checking the response. linearity of OTDR systems.
Date:
June 1983
Creator:
Danielson, B. L.
System:
The UNT Digital Library
Refracted-Ray Scanning (Refracted Near-Field Scanning) for Measuring Index Profiles of Optical Fibers
From introduction: The purpose of this Technical Note is to describe refracted-ray scanning in detail, to analyze it as a measurement system, to document a particular system for implementing it, and to show some exemplary results.
Date:
August 1981
Creator:
Young, Matt
System:
The UNT Digital Library
Report of the Twenty-Eighth National Conference on Weights and Measures, 1938
Report of the annual conference on weights and measures, hosted by the U.S. National Bureau of Standards in Washington D.C. It includes conference proceedings, a list of attendees, information about committees and officers, and other reports or commentaries discussed at the meetings.
Date:
1939
Creator:
United States. National Bureau of Standards.
System:
The UNT Digital Library
Effect of Exposure Site on Weather Resistance of Porcelain Enamels Exposed for Three Years
From Introduction: "The present report describes the condition of all of the porcelain enamels after exposure for 3 yr."
Date:
April 10, 1962
Creator:
Moore, Dwight G. & Potter, Alan
System:
The UNT Digital Library
Computer Modeling of the Vapor Compression Cycle with Constant Flow Area Expansion Device
Report issued by the National Bureau of Standards over studies conducted on vapor compression cycles. Methods of operation are discussed. This report includes graphs, illustrations, and photographs.
Date:
May 1983
Creator:
Domanski, Piotr & Didion, David A.
System:
The UNT Digital Library
Report of the Twenty-Fifth National Conference on Weights and Measures, 1935
Report of the annual conference on weights and measures, hosted by the U.S. National Bureau of Standards in Washington D.C. It includes conference proceedings, a list of attendees, information about committees and officers, and other reports or commentaries discussed at the meetings.
Date:
June 1936
Creator:
United States. Bureau of Standards.
System:
The UNT Digital Library
A Review of Supercritical Fluid Extraction
Forward: The purpose of this report is to summarize the results obtained from a brief investigation of supercritical fluid extraction principles and applications. This study was one portion of a project funded by the U.S. Department of Energy, Office of Fossil Energy, contract nuriber DE-AI01076PR06010, in response to a preliminary proposal submitted by the authors. This report sometimes uses company trade naries to identify processes and patent holders. This usage implies no endorsement by HBS. Note also that some figures reproduced from other sources do not conform with NBS policy concerning SI units.
Date:
December 1983
Creator:
Ely, James F. & Baker, Jolene K.
System:
The UNT Digital Library
Report of the Fortieth National Conference on Weights and Measures, 1955
Report of the annual conference on weights and measures, hosted by the U.S. National Bureau of Standards in Washington D.C. It includes conference proceedings, a list of attendees, information about committees and officers, and other reports or commentaries discussed at the meetings.
Date:
September 30, 1955
Creator:
United States. National Bureau of Standards.
System:
The UNT Digital Library