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Acid-Base Behavior in Aprotic Organica Solvents (open access)

Acid-Base Behavior in Aprotic Organica Solvents

Report presenting the National Bureau of Standards' research program designed to determine and explain acid-base behavior in aprotic organic solvents and to develop methods and reference materials for determining total acid and base content and relative strengths of acids and bases in the media.
Date: August 1968
Creator: Davis, Marion Maclean
Object Type: Report
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.
Object Type: Report
System: The UNT Digital Library
Measurement of Optical Fiber Bandwidth in the Frequency Domain (open access)

Measurement of Optical Fiber Bandwidth in the Frequency Domain

Abstract: The design, evaluation, and performance of a system for determining the magnitude of the transfer function (hence, the bandwidth) of a multimode optical fiber are presented. The system operates to about 1450 MHz using a tracking generator/spectrum analyzer combination for narrowband detection. It is constructed, almost entirely, from commercially available components. The system is less complex and easier to use than an equivalent time domain system and the measurement precision is comparable. Background information on time and frequency domain specifications, fiber bandwidth limitations, and alternate frequency domain techniques is also presented.
Date: September 1981
Creator: Day, G. W.
Object Type: Report
System: The UNT Digital Library
A Coaxial Noise Standard for the 1 GHz to 12.4 GHz Frequency Range (open access)

A Coaxial Noise Standard for the 1 GHz to 12.4 GHz Frequency Range

From introduction: This note describes the design and construction of a coaxial thermal noise standard. The standard is designed to operate at the boiling point of liquid nitrogen with a noise temperature accurate to t 1 K in the frequency range from 1 GHz to 12.4 GHz.
Date: 1984
Creator: Daywitt, William C.
Object Type: Report
System: The UNT Digital Library
Design and Error Analysis for the WR10 Thermal Noise Standard (open access)

Design and Error Analysis for the WR10 Thermal Noise Standard

From introduction: This note describes the design and error analysis of a WR10 thermal noise power standard. The standard is designed to operate at the boiling point of liquid nitrogen with a noise temperature accurate to plus or minus 1 K.
Date: December 1983
Creator: Daywitt, William C.
Object Type: Report
System: The UNT Digital Library
An Error Analysis for the Use of Presently Available Lunar Radio Flux Data in Broadbeam Antenna-System Measurements (open access)

An Error Analysis for the Use of Presently Available Lunar Radio Flux Data in Broadbeam Antenna-System Measurements

From introduction: Simple, precise expressions for lunar diameter, average brightness temperature, flux density, and shape factor are presented. An analysis of the relationship between these parameters and corresponding errors are included. For broadbeam (HPBW>d) antennas, results show that flux density and shape factor can be determined with errors less than 13 percent and 0.4 percent respectively at frequencies below 10 GHz. Extension of the analysis to higher frequencies is indicated.
Date: February 1984
Creator: Daywitt, William C.
Object Type: Report
System: The UNT Digital Library
Standards Committee Activities of the National Bureau of Standards: 1980 Highlights (open access)

Standards Committee Activities of the National Bureau of Standards: 1980 Highlights

From abstract: This report summarizes NBS standards committee activities during calendar year 1980. It contains highlights of significant technical and individual contributions made by NBS staff, a description of NBS standards management and information activities, and a directory of standards committees on which NBS staff serve. (Supersedes NBS Special Publication 573 (March 1980)).
Date: March 1980
Creator: Debelius, JoAnne R.
Object Type: Report
System: The UNT Digital Library
Construction of a Large Transverse Electromagnetic Cell (open access)

Construction of a Large Transverse Electromagnetic Cell

Report issued by the U.S. National Bureau of Standards discussing the construction of large electromagnetic cells. As stated in the introduction, "this instruction provides information and procedures necessary to fabricate a large transverse electromagnetic (TEM) cell to be used for experimental "electromagnetic interference" (EMI) evaluation studies" (p. 1). This report includes illustrations, and photographs.
Date: February 1979
Creator: Decker, W. F. & Wilson, W. A.
Object Type: Report
System: The UNT Digital Library
Cooperative Measurements of Radio Fading in 1925 (open access)

Cooperative Measurements of Radio Fading in 1925

Scientific paper issued by the Bureau of Standards over studies conducted on radio fading. As stated in the abstract, "the series of measurements on fading were devoted to studies of fading effects during the sunset period, effects during the solar eclipse of January 24, the fading variations throughout a 24-hour day, and the effects of high transmitting power on fading" (p. 419). This paper includes tables, maps, illustrations, and photographs.
Date: August 17, 1927
Creator: Dellinger, J. H.; Jolliffe, C. B. & Parkinson, T.
Object Type: Report
System: The UNT Digital Library
Heat Treatment and Properties of Iron and Steel (open access)

Heat Treatment and Properties of Iron and Steel

From Abstract: "This Monograph has been prepared to give an understanding of heat treatment principally to those unacquainted with this subject. This Monograph has been prepared to answer such inquiries and to give in simplified form a working knowledge of the basic theoretical and practical principles involved in the heat treatment of iron and steel."
Date: October 3, 1960
Creator: Digges, Thomas G. & Rosenberg, Samuel J.
Object Type: Report
System: The UNT Digital Library
Heat Treatment and Properties of Iron and Steel (open access)

Heat Treatment and Properties of Iron and Steel

From Abstract: "This Monograph is a revision of the previous NBS Monograph 18. Its purpose is to provide an understanding of the heat treatment of iron and steels, principally to those unacquainted with this subject. The basic principles involved in the heat treatment of these materials are presented in simple form." From Introduction: "This Monograph has been prepared to answer such inquires and to give in simplified form a working knowledge of the basic theoretical and practical principles involved in the heat treatment of iron and steel."
Date: November 1, 1966
Creator: Digges, Thomas G.; Rosenberg, Samuel J. & Geil, Glenn W.
Object Type: Report
System: The UNT Digital Library
Computer Modeling of the Vapor Compression Cycle with Constant Flow Area Expansion Device (open access)

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.
Object Type: Report
System: The UNT Digital Library
Introduction to STARPAC: the Standards Time Series and Regression Package (open access)

Introduction to STARPAC: the Standards Time Series and Regression Package

From preface: STARPAC documentation is being published as a series of Technical Notes. This Note is the first in the series. It gives an overview of the STARPAC library, defines conventions used in the documentation, provides an example using STARPAC subroutines, and presents general background material. This Note includes information which is essential for using the STARPAC library, and users should be familiar with its contents before attempting to use any STARPAC subroutine.
Date: October 1983
Creator: Donaldson, Janet R. & Tryon, Peter V.
Object Type: Report
System: The UNT Digital Library
Nonlinear Least Squares Regression Using STARPAC: The Standards Time Series and Regression Package (open access)

Nonlinear Least Squares Regression Using STARPAC: The Standards Time Series and Regression Package

From preface: This Note documents 16 subroutines for nonlinear least squares regression. Twelve of these compute the least squares estimates, performing either weighted or unweighted analysis with either numerically approximated or user-supplied (analytic) derivatives. The other four are user-callable subroutines for two procedures used within the estimation code: the first selects optimum step sizes for approximating the partial derivatives of the model; and the second checks the validity of a user-supplied derivative subroutine.
Date: October 1983
Creator: Donaldson, Janet R. & Tryon, Peter V.
Object Type: Report
System: The UNT Digital Library
Visual Range: Concepts, Instrumental Determination, and Aviation Applications (open access)

Visual Range: Concepts, Instrumental Determination, and Aviation Applications

From Abstract: "This document is a review of the principles, procedures, and instruments used in the measurement of visual range. The fundamental concepts of the visual range of the objects and lights are discussed. The principles of operation of the several classes of atmospheric attenuation meters are reviewed and representative instruments are described."
Date: June 1977
Creator: Douglas, C. A. & Booker, R. L.
Object Type: Report
System: The UNT Digital Library
A Compilation of the Physical Equilibria and Related Properties of the Hydrogen-Carbon Monoxide System (open access)

A Compilation of the Physical Equilibria and Related Properties of the Hydrogen-Carbon Monoxide System

Graphical presentation of K-factors for eight isotherms, published data on the solid-vapor region, and a bibliography of approximately 450 references.
Date: May 1961
Creator: Drayer, D. E. & Flynn, T. M.
Object Type: Report
System: The UNT Digital Library
Analysis of Optically Excited Mercury Molecules (open access)

Analysis of Optically Excited Mercury Molecules

Report presenting new measurement techniques used to obtain potential curves, f-values, and kinetic behavior for Hg2. The Hg2 molecule is representative of a class of molecules which have dissociative ground states and bound excited states. It can therefore be used as a prototype of this class of molecules which are of interest as potential new laser candidates. Because of the non-bound ground state, standard absorption spectroscopic techniques cannot be used to obtain the necessary information about the excited states.
Date: January 1975
Creator: Drullinger, R. E.; Hessel, M. M. & Smith, E. W.
Object Type: Report
System: The UNT Digital Library
Guideline on Major Job Accounting Systems: The System Management Facilities (SMF) for IBM Systems Under OS/MVT (open access)

Guideline on Major Job Accounting Systems: The System Management Facilities (SMF) for IBM Systems Under OS/MVT

Report issued by the U.S. National Bureau of Standards discussing the System Management Facilities for IBM systems. As stated in the introduction, "the purpose of SMF, as stated in the IBM manual, is to provide the means for gathering and recording information that can be used for billing customers or evaluating system usage" (p. 1). This report includes tables, and illustrations.
Date: October 1978
Creator: Durbin, Gary; Kinney, Todd; Lamasney, Peter; Newman, Edward & Syrett, Edward
Object Type: Report
System: The UNT Digital Library
Phase Equilibria: an Informal Symposium (open access)

Phase Equilibria: an Informal Symposium

From introduction: The accurate prediction of phase equilibria plays an important. role in the chemical process industries. A grief overview of final phase equilibria predictive techniques is presented with special emphasis on methods in current use in industry. Areas were better fundamental understanding will lead to improved models are discussed whenever possible.
Date: January 1983
Creator: Eaton, B. E.; Ely, James F.; Hanley, H. J. M.; McCarty, Robert D. & Rainwater, James C.
Object Type: Report
System: The UNT Digital Library
An Engineering Method for Calculating Protection Afforded by Structures Against Fallout Radiation (open access)

An Engineering Method for Calculating Protection Afforded by Structures Against Fallout Radiation

From Introduction: "The purpose of the paper is to discuss the assumptions and the reasoning by which the calculations described in the Engineering Manual were derived from the data in [1]. The relevant curves from [1] are given in Appendix A and the technical charts from the Engineering Manual are given in appendix B."
Date: July 2, 1964
Creator: Eisenhauer, Charles
Object Type: Report
System: The UNT Digital Library
A Review of Supercritical Fluid Extraction (open access)

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.
Object Type: Report
System: The UNT Digital Library
An Introduction to the Description and Evaluation of Microwave Systems Using Terminal Invariant Parameters (open access)

An Introduction to the Description and Evaluation of Microwave Systems Using Terminal Invariant Parameters

Report presenting the technical background and basis for a new method of evaluating certain performance parameters which are common to all microwave systems. A unique feature of the new measurement concept is its elimination of the precision waveguide and connector requirements for an important class of measurement problems.
Date: October 1969
Creator: Engen, Glenn F.
Object Type: Report
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.
Object Type: Report
System: The UNT Digital Library
Proceedings of the International Symposium on Free Radicals: 1985 (open access)

Proceedings of the International Symposium on Free Radicals: 1985

Abstract: This publication contains papers presented at the Seventeenth International Symposium on Free Radicals, held at Snow Mountain Ranch in Granby, Colorado, on August 18-23, 1985. The Symposium was attended by 147 people, representing industry, government, and academia, from 18 countries. A total of 67 papers appear in written form in this document.
Date: April 1986
Creator: Evenson, Kenneth M.
Object Type: Report
System: The UNT Digital Library