Resource Type

Fire Tests of Precast Cellular Concrete Floors and Roofs (open access)

Fire Tests of Precast Cellular Concrete Floors and Roofs

From Abstract: "The results of an investigation of lightweight, precast cellular concrete planks are given. Fire tests were made of two floor and five roof specimens made up of these planks. Variables, included density of the cellular concrete, thickness and span of the planks, reinforcement, and cover for the latter."
Date: April 12, 1962
Creator: Ryan, J. V. & Bender, E. W.
Object Type: Report
System: The UNT Digital Library
Analysis of Coaxial Two-Terminal Conical Capacitor (open access)

Analysis of Coaxial Two-Terminal Conical Capacitor

From Abstract: "The electric field is plotted and its construction steps for axial symmetry are given."
Date: April 6, 1962
Creator: Selby, M. C.
Object Type: Report
System: The UNT Digital Library
Radiation Patterns in the Lower Ionosphere and Fresnel Zones for Elevated Antennas Over a Spherical Earth (open access)

Radiation Patterns in the Lower Ionosphere and Fresnel Zones for Elevated Antennas Over a Spherical Earth

From Introduction: "The purpose of this work is to give the results of a detailed computation of antenna patterns in the ionosphere at VHF over a spherical earth."
Date: April 2, 1962
Creator: Merrill, R. G. & Mansfield, W. V.
Object Type: Report
System: The UNT Digital Library
Automatic Typographic-Quality Typesetting Techniques: A State-of-the-Art Review (open access)

Automatic Typographic-Quality Typesetting Techniques: A State-of-the-Art Review

From Introduction Purpose and Scope of Report: "This report is one of a series prepared for the Research Information Center and Advisory Service on Information Processing (RICASIP), and intended as a contribution to improved cooperation in the fields of information selection systems development, information retrieval research and mechanized translation."
Date: April 7, 1967
Creator: Stevens, Mary Elizabeth & Little, John L.
Object Type: Report
System: The UNT Digital Library
Ionospheric Radio Propagation (open access)

Ionospheric Radio Propagation

From Preface: "The purpose of this book is to replace, in part, a previous publication of the National Bureau of Standards (Circular 462) with the same title. The scope of the present work has therefore been broadened to include aspects of ionospheric radio propagation which were not treated in earlier publication."
Date: April 1, 1965
Creator: Davies, Kenneth
Object Type: Report
System: The UNT Digital Library
Testing of Metal Volumetric Standards (open access)

Testing of Metal Volumetric Standards

From Purpose: "The specifications and tolerances contained in this Monograph should be of assistance to purchasers of metal capacity standards. The information on methods of calibration and use of these measures should prove valuable to weights and measures officials and those persons in industry who are concerned with measurements of volumes of fluids."
Date: April 1, 1963
Creator: Hughes, J. C. & Keysar, B. C.
Object Type: Report
System: The UNT Digital Library
Effect of Exposure Site on Weather Resistance of Porcelain Enamels Exposed for Three Years (open access)

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
Object Type: Report
System: The UNT Digital Library
Trace Characterization: Chemical and Physical (open access)

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.
Object Type: Report
System: The UNT Digital Library
Platinum Resistance Thermometry (open access)

Platinum Resistance Thermometry

From Introduction: "This monograph describes the calibration of standard platinum resistance thermometers at the NBS including the equipment, techniques, and procedures."
Date: April 1973
Creator: Riddle, John L.; Furukawa, George T. & Plumb, Harmon H.
Object Type: Report
System: The UNT Digital Library
The Nicrosil versus Nisil Thermocouple: Properties and Thermoelectric Reference Data (open access)

The Nicrosil versus Nisil Thermocouple: Properties and Thermoelectric Reference Data

From Abstract: "This monograph deals with the formulation and development of the new highly stable nickel-base thermocouple alloys Nicrosil (Ni-14.2Cr-1.4Si) and Nisil (Ni-4.4Si-0.1Mg) under the leadership of the Materials Research Laboratories (MRL) of the Australian Government of Defence, and their standardization by the National Bureau of Standards (NBS) of the U.S. Department of Commerce."
Date: April 1978
Creator: Burley, Noel A.; Powell, Robert L.; Burns, George W.; Scroger, Margaret G.; Burns, George W. & Scroger, Margaret G.
Object Type: Report
System: The UNT Digital Library
Bibliography of Temperature Measurement: July 1960 to December 1965 (open access)

Bibliography of Temperature Measurement: July 1960 to December 1965

Report combining National Bureau of Standards Monograph 27 with the references given in Supplement 1 (May 13, 1963) and issued as a single publication to assist users of this material. References concern the field of temperature measurement. These references were collected from two general sources: Scientific and technical literature and government reports. References are divided into a number of categories based on the type of instrument used. Some references to calibration of instruments and to scientific theories upon which temperature measurement is based are also presented.
Date: April 28, 1967
Creator: Olsen, Lief O. & Halpern, Carl
Object Type: Report
System: The UNT Digital Library
Bibliography of Temperature Measurement: January 1953 to June 1960 (open access)

Bibliography of Temperature Measurement: January 1953 to June 1960

Report presenting more than 500 references to the field of temperature measurement. These references were collected from two general sources: Scientific and technical literature and government reports. The period covered is from 1953 to June 1960, with some from earlier dates. References are divided into a number of categories based on the type of instrument used. Some references to calibration of instruments and to scientific theories upon which temperature measurement is based are also presented.
Date: April 6, 1961
Creator: Halpern, Carl & Moffat, Robert J.
Object Type: Report
System: The UNT Digital Library
Causes of Variation in Chemical Analyses and Physical Tests of Portland Cement (open access)

Causes of Variation in Chemical Analyses and Physical Tests of Portland Cement

Report discussing variations in comparative tests of portland cements that could lead to the rejection of a material fully conforming to specification requirements, or the acceptance of a material with undesirable chemical or physical properties. Many of the causes for variation in chemical analyses and physical test results are listed in this discussion, and remedies for some of the more frequently encountered deficiencies in apparatus and methods are suggested.
Date: April 27, 1961
Creator: Bean, B. Leonard & Dise, John R.
Object Type: Report
System: The UNT Digital Library
Corrected Optical Pyrometer Readings (open access)

Corrected Optical Pyrometer Readings

Report presenting a table of corrected optical pyrometer readings which enables optical pyrometer users to convert observed temperature immediately to the true temperature, if the effective emissivity of the material being observed is known. The table gives observed temperatures from 1,000 to 3,000ºK in increments of 5 degrees, from 3,000 to 5,000ºK in increments of 10 degrees, from 5,000 to 10,000ºK in increments of 50 degrees, and from 10,000 to 39,900ºK in increments of 100 degrees. For these, true temperatures are tabulated for 49 emissivities ranging from 0.02 to 0.98 in increments of 0.02.
Date: April 21, 1961
Creator: Poland, D. E.; Green, J. W. & Margrave, J. L.
Object Type: Report
System: The UNT Digital Library
Colors of Signal Lights: Their Selection, Definition, Measurement, Production, and Use (open access)

Colors of Signal Lights: Their Selection, Definition, Measurement, Production, and Use

Report discussing the selection, specifications, and use of signal-light colors. It discusses the nature of the problem, and the mathematical representation, recognition, production, control, and use of such colors. The characteristics of different types of chromaticity boundaries and the purpose and effect of the requirement for similarity of chromaticity characteristics are given special consideration. The treatment is varied according to the intended use. The discussion of the control of colors and the section on the use of colors are nontechnical, whereas the section on the production of signal colors is designed for the colorimetrist who is faced with the problem of selecting limit filters or drafting a specification.
Date: April 3, 1967
Creator: Breckenridge, F. C.
Object Type: Report
System: The UNT Digital Library
Relativistic Many-Body Bound Systems: Electromagnetic Properties (open access)

Relativistic Many-Body Bound Systems: Electromagnetic Properties

Report presenting the formulae for the calculation of the electron scattering form factors, and of the static magnetic dipole and electric quadrupole moments, of relativistic many-body bound systems. The framework, given in NBS Monograph 147, is relativistic quantum field theory in the Schrodinger picture ; the physical particles, i.e. the solutions of the interacting fields, are given as linear combinations of the solutions of the free fields, called the parton fields. The parton-photon interaction is taken as given by minimal coupling, p -> p - eA ; in addition the contribution of the photon-vector meson vertex of the vector dominance model is derived.
Date: April 1977
Creator: Danos, Michael & Gillet, Vincent
Object Type: Report
System: The UNT Digital Library
Microwave Attenuation Standards and Measurements (open access)

Microwave Attenuation Standards and Measurements

Report discussing microwave attenuation measurement methods and standards. In addition, a relatively new and more precise way of representing and analyzing an attenuation measurement is presented. This in turn permits more rigorous definitions and error analyses than were previously possible. The referral of microwave attenuation measurements to standards operating at lower frequencies is discussed with particular attention to the errors in the referral processes as well as the errors in the standards themselves. Desirable characteristics are listed for attenuators which are suitable for calibration. Measurement methods are classified and described. Comments are made on the accuracy and convenience of various methods, and references are given which cover most of the basic and important research in this field. Key words: Microwave, attenuation, measurements, standards, tutorial.
Date: April 3, 1967
Creator: Beatty, Robert W.
Object Type: Report
System: The UNT Digital Library
Influence of a Sector Ground Screen on the Field of a Vertical Antenna (open access)

Influence of a Sector Ground Screen on the Field of a Vertical Antenna

Report show the field of a short vertical antenna on a homogeneous ground is modified by the presence of a metallic screen. The screen is taken in the form of a circular disk and a concentric sector. The modification of the field is expressed in the form of surface integrals over the disk and the sector. Extensive numerical results for these basic integrals are given and a number of applications are illustrated.
Date: April 15, 1963
Creator: Wait, James R. & Walters, Lillie C.
Object Type: Report
System: The UNT Digital Library
Low-Voltage Room Thermostat Performance (open access)

Low-Voltage Room Thermostat Performance

Report issued by the National Bureau of Standards over low voltage electric thermostats. Thermostat test results are discussed. This report includes illustrations, and photographs.
Date: April 1983
Creator: Kao, James Y.; Sushinsky, George; Didion, David A.; Mastascusa, E. J. & Chi, Joseph
Object Type: Report
System: The UNT Digital Library
Fire Tests of Building Columns (open access)

Fire Tests of Building Columns

Technical paper issued by the Bureau of Mines over studies conducted on fire resistance on building columns. As stated in the introduction, "the purpose of this investigation is to ascertain (1) the ultimate resistance against fire, of protected and unprotected columns as used in the interior of buildings; (2) their resistance against impact and sudden cooling from hose streams when in a highly heated condition" (p. 12). This paper includes tables, illustrations.
Date: April 21, 1921
Creator: Ingberg, S. H.; Griffin, H. K.; Robinson, W. C. & Wilson, R. E.
Object Type: Report
System: The UNT Digital Library
Measurements on the Thermal Expansion of Fused Silica (open access)

Measurements on the Thermal Expansion of Fused Silica

Scientific paper issued by the Bureau of Standards over thermal expansion of fused silica. As stated in the abstract, "this paper gives the results of an investigation on the thermal expansion of transparent and nontransparent fused silica for various temperature ranges between -125 and +1,000 degrees Celsius. A detailed description of the apparatus and the methods used in this research and a summary of available data obtained by previous observers on the thermal expansion of fused silica are given" (p. 1). This paper includes tables, photographs, and illustrations.
Date: April 13, 1926
Creator: Souder, Wilmer H. & Hidnert, Peter
Object Type: Report
System: The UNT Digital Library
Recommended Practice for the Use of Metric (SI) Units in Building Design and Construction (open access)

Recommended Practice for the Use of Metric (SI) Units in Building Design and Construction

Report issued by the U.S. National Bureau of Standards discussing the use of metric units of measurement during construction. As stated in the scope, "this document outlines a selection of SI units, with multiples and sub-multiples, for general use in building design and construction" (p. 1). This report includes tables, and illustrations.
Date: April 1977
Creator: Milton, Hans J.
Object Type: Report
System: The UNT Digital Library
Safety Rules for the Installation and Maintenance of Electrical Supply and Communication Lines: Comprising Part 2 of the Fourth Edition National Electrical Safety Code (open access)

Safety Rules for the Installation and Maintenance of Electrical Supply and Communication Lines: Comprising Part 2 of the Fourth Edition National Electrical Safety Code

Report containing information regarding "the construction and maintenance of overhead and underground electrical supply and communication lines" (p. ii).
Date: April 15, 1927
Creator: United States. Bureau of Standards.
Object Type: Book
System: The UNT Digital Library
Tables of Thermodynamic Properties of Ammonia (open access)

Tables of Thermodynamic Properties of Ammonia

A report containing tables of thermodynamic properties of ammonia.
Date: April 16, 1923
Creator: unknown
Object Type: Report
System: The UNT Digital Library