The 1958 He4 Scale of Temperatures: Part 1. Introduction, Part 2. Tables for the 1958 Temperature Scale (open access)

The 1958 He4 Scale of Temperatures: Part 1. Introduction, Part 2. Tables for the 1958 Temperature Scale

Report containing information regarding He4 vapor pressure measurement as of 1958, the recent history of the vapor pressure temperature scale, and a series of tables containing these measurements.
Date: June 17, 1960
Creator: Brickwedde, F. G. (Ferdinand Graft), 1903-; van Dijk, H.; Durieux, M.; Clement, J. R. & Logan, J. K.
System: The UNT Digital Library
Acceleration Due to Gravity at the National Bureau of Standards (open access)

Acceleration Due to Gravity at the National Bureau of Standards

Report describing the determination of the absolute value of the acceleration due to gravity at the National Bureau of Standards.
Date: June 1968
Creator: Tate, Douglas Roy
System: The UNT Digital Library
Annotated Bibliography on Soft X-ray Spectroscopy (open access)

Annotated Bibliography on Soft X-ray Spectroscopy

Report presenting a bibliography of about 550 references of the soft X-ray literature since 1950 and through 1960. The emphasis is on the application of soft X-ray spectroscopy to the study of valence band electronic states in metals and alloys. Therefore, the spectral region of 25 to 800 angstroms involving ruled glass grating spectrometers is of principal interest. In addition to soft X-ray data, references on all pertinent aspects of the apparatus and experimental problems are included. Also listed separately are references of value in corroborating soft X-ray data with other results. Subject, author, X-ray band, material, and other indices are included.
Date: June 29, 1962
Creator: Yakowitz, Harvey, 1939- & Cuthill, J. R.
System: The UNT Digital Library
Annual Variation of Temperature Field and Heat Transfer Under Heated Ground Surfaces (Slab-on-Grade Floor Heat Loss Calculation) (open access)

Annual Variation of Temperature Field and Heat Transfer Under Heated Ground Surfaces (Slab-on-Grade Floor Heat Loss Calculation)

Report issued by the National Bureau of Standards over studies conducted on sub-surface temperatures and heat transfer. Testing methods are discussed. This report includes tables, and illustrations.
Date: June 1983
Creator: Kusuda, Tamami; Piet, O. & Bean, J. W.
System: The UNT Digital Library
Automatic Measurement of Network Parameters: A Survey (open access)

Automatic Measurement of Network Parameters: A Survey

Report issued by the Bureau of Standards over a survey conducted on measurement methods of network parameters. As stated in the introduction, "this paper is concerned with the development of automatic methods of measuring basically the magnitudes and phase differences, or the complex ratio of two sinusoidal voltages, and applications of this capability to determining complex reflection coefficients and transmission coefficients and group delay times of electrical networks" (p. 1). This report includes tables, and illustrations.
Date: June 1976
Creator: Beatty, Robert William
System: The UNT Digital Library
The Calculation of Rotational Energy Levels and Rotational Line Intensities in Diatomic Molecules (open access)

The Calculation of Rotational Energy Levels and Rotational Line Intensities in Diatomic Molecules

Report describing procedures for making quantum mechanical calculations of rotational energy levels and rotational line intensities in diatomic molecules. The procedures are illustrated by sample calculations. A familiarity with the material of this report should enable a practicing electronic spectroscropist to carry out, though in a rather mechanical way, his own theoretical calculations for molecules under experimental investigation.
Date: June 1970
Creator: Hougen, Jon T.
System: The UNT Digital Library
The Characterization of Optical Fiber Waveguides: A Bibliography with Abstracts, 1970-1980 (open access)

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
Computerization of Welding Information (open access)

Computerization of Welding Information

From abstract: The Workshop on Computerization of Welding Information, sponsored by the National Bureau of Standards and the American Welding Institute, was held August 5-6, 1986 in Knoxville, Tennessee. Forty-two welding engineers, welding managers, and computer scientists gathered to discuss the necessity and design of databases for welding information. Each subject was introduced by specialists in that area.
Date: June 1988
Creator: Siewert, T. A. & Jones, J. E.
System: The UNT Digital Library
Corrosion and Protection of Steel Piles in a Natural Seawater Environment (open access)

Corrosion and Protection of Steel Piles in a Natural Seawater Environment

From Introduction: "This paper describes some results of the first eight years of a fifteen year program in which a variety of coating and catholic protection systems are evaluated on their ability to protect steel piles in offshore conditions at Dam Neck, Virginia. It includes a description of the methods used in the evaluation and the results found on these systems."
Date: June 1977
Creator: Escalante, E.; Iverson, W. P.; Gerhold, W. F.; Sanderson, B. T. & Alumbaugh, R. L.
System: The UNT Digital Library
DATAPLOT: Introduction and Overview (open access)

DATAPLOT: Introduction and Overview

Abstract: This manual provides DATAPLOT code solution to a variety of commonly occurring graphical problems. A line-by-line explanation of code is given, along with illustrations and general discussion.
Date: June 1984
Creator: Filliben, James J.
System: The UNT Digital Library
Determination of Total X-Ray Beam Energy With a Calibrated Ionization Chamber (open access)

Determination of Total X-Ray Beam Energy With a Calibrated Ionization Chamber

From Abstract: "This report describes the use of an air-filled aluminum-alloy ionization chamber to determine the energy transported by a bremsstrahlung beam with maximum photon energy in the range 6 to 170 Mev. This report can be used to construct a replica chamber to determine its absolute calibration between 6 and 170 Mev under a variety of experimental conditions."
Date: June 5, 1962
Creator: Pruitt, John S. & Domen, Steve R.
System: The UNT Digital Library
The Effect of Time Ordering on the Lyman α Profile (open access)

The Effect of Time Ordering on the Lyman α Profile

Report investigating the effects of time-ordering over the complete line profile using a unified theory of spectral line broadening previously developed. The behavior of the time-ordered thermal average and un-time-ordered thermal average are compared. The Fourier transform of the thermal average is obtained analytically. Calculations for the line profile of the Lyman-[functional symbol alpha] line of hydrogen are presented and are representative in that the full thermal average is replaced by the thermal average with the electron velocity distribution approximated by f(v)=[functional symbol alpha] (v-vav) where vav is the thermal velocity for the plasma in question.
Date: June 1971
Creator: Godfrey, J. T.; Vidal, C. R.; Smith, E. W. & Cooper, J.
System: The UNT Digital Library
Electrical Parameters of Precision, Coaxial, Air-dielectric Transmission Lines (open access)

Electrical Parameters of Precision, Coaxial, Air-dielectric Transmission Lines

From Introduction: "Following the guidelines established by this committee, several commercially developed precision connectors have appeared on the market which have led to the wide use of the precision coaxial lines as immittance standards. This paper has been prepared to alleviate this situation by providing graphs from which the electrical parameters of the lines may be determined rapidly and accurately."
Date: June 30, 1966
Creator: Nelson, Robert E. & Coryell, Marlene R.
System: The UNT Digital Library
Electromagnetic Boundary-Value Problems Based Upon a Modification of Residue Calculus and Function Theoretic Techniques (open access)

Electromagnetic Boundary-Value Problems Based Upon a Modification of Residue Calculus and Function Theoretic Techniques

From Introduction: "The first part of this monograph is concerned with the analysis of closed region wave-guide junction problems. This allows simplification of the techniques to be used since no branch cuts are involved in the spectral representation of the fields. However, the analysis can be extended to open region problems in a logical manner. This is the subject of the second part of this monograph."
Date: June 1979
Creator: Montgomerey, James Patrick & Chang, David C.
System: The UNT Digital Library
Evaluating the Impact of Securities Regulation on Venture Capital Markets (open access)

Evaluating the Impact of Securities Regulation on Venture Capital Markets

Report providing a detailed and analytical assessment of the economic techniques used by researchers to evaluate the efficiency of capital markets. The application of these techniques to that portion of the capital market which supplies venture funds to small, technology-based firms is emphasized. The primary elements of such analysis are the "efficient market ' hypothesis" and the "capital asset pricing model." The empirical analogue of the latter is commonly referred to as the market model."
Date: June 1980
Creator: Barth, James R.; Cordes, Joseph J. & Tassey, Gregory
System: The UNT Digital Library
Glass Limit Standards Deposited at NBS for Railway, Highway, and Airways Traffic Signal Colors: History, Permanence and Colorimetric Properties (open access)

Glass Limit Standards Deposited at NBS for Railway, Highway, and Airways Traffic Signal Colors: History, Permanence and Colorimetric Properties

Permanence and colorimetric properties of signal glass.
Date: June 1971
Creator: Haupt, Geraldine W.
System: The UNT Digital Library
Guide Chart for Carbon Brush Terminals (Electric) (open access)

Guide Chart for Carbon Brush Terminals (Electric)

Diagrams and tolerances in inches for different size terminals.
Date: June 1, 1945
Creator: United States. Bureau of Standards.
System: The UNT Digital Library
Infrared Spectroscopy of Carbohydrates: A Review of the Literature (open access)

Infrared Spectroscopy of Carbohydrates: A Review of the Literature

Report presenting of survey of the literature on the infrared spectroscopy of carbohydrates in order to assemble and systematize information in this field. Discusses principles and instrumentation, sampling techniques, comparison of samples, and the interpretation of the spectra. In addition, examples are discussed of the use of infrared spectra for qualitative and quantitative purposes and in the determination of structure. Special techniques are briefly described.
Date: June 1968
Creator: Tipson, R. Stuart
System: The UNT Digital Library
Measurement and Specification of the Physical Factors Which Determine the Saturation of Certain Tints of Yellow (open access)

Measurement and Specification of the Physical Factors Which Determine the Saturation of Certain Tints of Yellow

Technical paper issued by the Bureau of Standards over studies conducted on the specifications of color. The specifications of the color yellow are discussed. This paper includes tables, illustrations, and photographs.
Date: June 30, 1917
Creator: Priest, Irwin G. & Peters, Chauncey G.
System: The UNT Digital Library
Measurement of Electrical Quantities in Pulse Power Systems (open access)

Measurement of Electrical Quantities in Pulse Power Systems

Abstract: The Workshop on Measurement of Electrical Quantities in Pulse Power Systems addressed measurements in pulse systems having the characteristics of pulse duration less than a millisecond, system voltages greater than 10 kilovolts, and system currents greater than 10 kiloamperes. The presented papers were divided into four categories: voltage measurements; current measurements; power and energy measurements, and data acquisition. Included are discussions of applications of conventional measurement techniques and state-of-the-art systems.
Date: June 1982
Creator: McKnight, R. H. & Hebner, R. E., Jr.
System: The UNT Digital Library
The Measurement of Lumped Parameter Impedance: A Metrology Guide (open access)

The Measurement of Lumped Parameter Impedance: A Metrology Guide

Scope of the Guide: "This guide is not all-inclusive of the subject of impedance measurement and the reader should understand at the outset what he can or cannot expect to find. To help in establishing the bounds of subject matter included, consider the ideal impedance-measuring instrument as having the following the characteristics and capabilities: (1) unrestricted frequency range (2) unrestricted impedance range (3) unrestricted capabilities with respect to bias, ambience, applied power, etc. (4) error free (5) performs measurements instantaneously (6) zero acquisition cost (7) zero operating cost."
Date: June 1974
Creator: Jones, R. N. & Anson, W. J.
System: The UNT Digital Library
The Measurement of Noise Performance Factors: A Metrology Guide (open access)

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
Mechanical Properties of Structural Materials at Low Temperatures: A Compilation From the Literature (open access)

Mechanical Properties of Structural Materials at Low Temperatures: A Compilation From the Literature

From Introduction: "The data are presented with the idea that an engineer who is making initial calculations on equipment for operation at cryogenic temperatures is more interested in obtaining quickly a definite figure that he in evaluating the experimental data given in several detailed reports on the same material. The graphs and tables presented here, consequently, represent an attempt by the authors to perform evaluation of data which have appeared in the literature and to present the design engineer with the result."
Date: June 1, 1960
Creator: McClintock, R. Michael & Gibbons, Hugh P.
System: The UNT Digital Library
A Method for the Dynamic Determination of the Elastic, Dielectric, and Piezoelectric Constants of Quartz (open access)

A Method for the Dynamic Determination of the Elastic, Dielectric, and Piezoelectric Constants of Quartz

From Abstract: "Several dynamic determinations have been made of the constants of quartz. Most of these determinations do not take into account the piezoelectric effect; those that do, suffer from certain deficiencies which are discussed in this paper."
Date: June 1, 1960
Creator: Basri, Saul A.
System: The UNT Digital Library