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Engineering Aspects of the September 19, 1985 Mexico Earthquake

Description: Report issued by the National Bureau of Standards over the 1985 Mexico earthquake. The rescue efforts and damage assessments are discussed. This report includes tables, maps, illustrations, and photographs.
Date: May 1987
Creator: Stone, William C.; Yokel, Felix Y.; Celebi, Mehmet; Hanks, Thomas & Leyendecker, Edgar V.
Partner: UNT Libraries Government Documents Department
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Interactive FORTRAN Programs for Micro Computers to Calculate the Thermophysical Properties of Twelve Fluids (MIPROPS)

Description: From abstract: The thermophysical and transport properties of selected fluids have been programmed in FORTRAN 77 which is available for micro computers. The input variables are any two of P, p, T (pressure, density, and temperature) in the single phase regions, and either P or T for the saturated liquid or vapor states. The output is pressure, density, temperature, internal energy, enthalpy, entropy, specific heat capacities (Cp and Cv), speed of sound and, in most cases, viscosity, thermal conductivity and dielectric constant.
Date: May 1986
Creator: McCarty, Robert D.
Partner: UNT Libraries Government Documents Department
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Linear Gain: Standard Antennas Below 1000 MHz

Description: Abstract: Gain and antenna parameters related to input impedance are calculated using a computer program called HVD6. This program uses well documented equations to compute these parameters for gain-standard antennas used in relative-gain or gain-transfer measurements at frequencies below 1000 MHz. The utility of this program is that it calculates gain patterns and input impedances for linear dipoles above perfect or imperfectly conducting plane ground and in free space, and for monopoles on perfectly conducting plane ground. Examples are included to illustrate the use of the program. Uncertainties in the calculated parameters are estimated to be less than those of the measured parameters.
Date: May 1986
Creator: FitzGerrell, R. G.
Partner: UNT Libraries Government Documents Department
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A Statistical Characterization of Electroexplosive Devices Relevant to Electromagnetic Compatibility Assessment

Description: Abstract: Electroexplosive devices (EEDs) are electrically fired explosive initiators used in a wide variety of applications. The nature of most of these applications requires that the devices function with near certainty when required and remain inactive otherwise. Recent concern with pulsed electromagnetic interference (EMI) and nuclear electromagnetic pulse (EMP) made apparent the lack of methodology for assessing EED vulnerability. A new and rigorous approach for characterizing EED firing levels is developed in the context of statistical linear models and is demonstrated in this paper. We combine statistical theory and methodology with thermodynamic modeling to determine the probability that an EED, of a particular type, fires when excited by a pulse of a given width and amplitude. The results can be applied to any type of EED for which the hot-wire explosive binder does not melt below the firing temperature. Included are methods.for assessing model validity and for obtaining probability plots, called "Firing Likelihood Plots". A method of measuring the thermal time constant of an EED is given. This parameter is necessary to evaluate the effect of a train of pulses. These statistical methods are both more general and more efficient than previous methods for EED assessment. The results provide information which is crucial for evaluating the effects of currents induced by impulsive electromagnetic fields of short duration relative to the EEDs thermal time constant.
Date: May 1986
Creator: Friday, Dennis S. & Adams, John W.
Partner: UNT Libraries Government Documents Department
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A Study of Techniques for Measuring the Electromagnetic Shielding Effectiveness of Materials

Description: Abstract: Shielding effectiveness relates to a material's ability to reduce the transmission of propagating fields in order to electromagnetically isolate one region from another. Because a complex material's shielding capability is difficult to predict, it often must be measured. A number of measurement approaches are studied including the use of a shielded room, coaxial transmission line holders, time domain signals, the dual TEM cell, and an apertured TEM cell in a reverberation chamber. In each case, we consider the system's frequency range, test sample requirements, test field type, dynamic range, time required, analytical background, and present data taken on a common set of materials.
Date: May 1986
Creator: Wilson, Perry F. & Ma, Mark T.
Partner: UNT Libraries Government Documents Department
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A Bibliography of Sources of Thermodynamic Data for the Systems: CO₂+NH₃+H₂O, CO₂+H₂S+H₂O, H₂S+NH₃+H₂O, and CO₂+NH₃+H₂S+H₂O

Description: Abstract: Contained herein is a bibliography of sources of experimental and correlated thermodynamic data for the systems: CO₂ + NH₃ + H₂O, CO₂ + H₂S + H₂O, H₂S + NH₃ + H₂O, and CO₂ + NH₃ + H₂S + H₂O. The types of data in this bibliography include all types of equilibrium data, including both eqilibria [sic] in solution and vapor-liquid equilibrium data, enthalpies, heat capacities, and densities. There are 215 references cited. Bibliographic Data Sheet.
Date: May 1985
Creator: Goldberg, Robert N. & Steckler, D. K.
Partner: UNT Libraries Government Documents Department
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Proceedings of Cryocooler Conference: 1984

Description: Abstract: This document contains the proceedings of the Third Cryocooler Conference, held at the National Bureau of Standards, Boulder, CO, on Sept. 17-18, 1984. About 140 people from 10 countries attended the conference and represented industry, government, and academia. A total of 26 papers were presented orally at the conference and all appear in written form in this document. The emphasis in this conference was on small cryocoolers in the temperature range of 4 - 80 K. Mechanical and non-mechanical types were discussed in the various papers. Applications of these small cryocoolers include the cooling of infrared detectors, cryopumps, small superconducting devices and magnets, and electronic devices.
Date: May 1985
Creator: Radebaugh, Ray; Louie, Beverly & McCarthy, Sandy E.
Partner: UNT Libraries Government Documents Department
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Steel Research Needs for Buildings

Description: Abstract: This report identifies experimental and analytical research needed to advance the state-of-the-art and improve safety and economy in the design, fabrication and construction of steel buildings. A five year plan for a coordinated research program is included. Recommendations for research projects dealing with the following topics are presented: total building systems, connections and members, frames, seismic design, load and resistance factor design, fire protection, and design loads. The recommendations were developed at a workshop involving participation by steel industry representatives, design professionals, Federal agency representatives and university researchers.
Date: May 1985
Creator: Culver, Charles G.; Iwankiw, Nestor & Kuentz, Albert
Partner: UNT Libraries Government Documents Department
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Effectiveness of Solar Shading for an Office Building

Description: Report issued by the National Bureau of Standards over the effectiveness of solar screens on office buildings. The effectiveness of solar shading is discussed. This report includes tables, maps, illustrations, and photographs.
Date: May 1984
Creator: Treado, S.; Barnett, J. & Remmert, W.
Partner: UNT Libraries Government Documents Department
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Wind Loading and Strength of Cladding Glass

Description: Report issued by the National Bureau of Standards over studies conducted on glass cladding behavior under wind loads. Procedures for investigating cladding behavior are discussed. This report includes graphs, illustrations, and photographs.
Date: May 1983
Creator: Reed, Dorothy A. & Simiu, Emil
Partner: UNT Libraries Government Documents Department
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The Development and Evaluation of Effective Symbol Signs

Description: Report issued by the National Bureau of Standards over the history and development of sign systems in the United States. The research and development of more effective systems are discussed. This report includes tables, and illustrations.
Date: May 1982
Creator: Collins, Belinda Lowenhaupt
Partner: UNT Libraries Government Documents Department
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Investigation of the Kansas City Hyatt Regency Walkways Collapse

Description: Report issued by the National Bureau of Standards documenting investigations conducted on construction failures of two suspended walkways in a Kansas City hotel. It includes tables, illustrations, photographs, and other details of the investigation.
Date: May 1982
Creator: Marshall, Richard D.; Pfrang, E. O.; Leyendecker, Edgar V.; Woodward, K. A.; Reed, R. P.; Kasen, M. B. et al.
Partner: UNT Libraries Government Documents Department
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Load Displacement Characteristics of Shallow Soil Anchors

Description: Report issued by the National Bureau of Standards over studies conducted on load displacement of shallow soil anchors. Characteristics and testing methods are discussed. This report includes graphs, illustrations, and photographs.
Date: May 1982
Creator: Yokel, Felix Y.; Chung, Riley M.; Rankin, Frank A. & Yancey, Charles W. C.
Partner: UNT Libraries Government Documents Department
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Oil and Gas Supply Modeling

Description: Abstract: The symposium on Oil and Gas Supply Modeling, held at the Department of Commerce, Washington, DC (June 18-20, 1980), was funded by the Energy Information Administration of the Department of Energy and co-sponsored by the National Bureau of Standards' Operations Research Division. The symposium was organized to be a forum in which the theoretical and applied state-of-the-art of oil and gas supply models could be presented and discussed. Speakers addressed the following areas: the realities of oil and gas supply, prediction of oil and gas production, problems in oil and gas modeling, resource appraisal procedures, forecasting field size and production, investment and production strategies, estimating cost and production schedules for undiscovered fields production regulations, resource data, sensitivity analysis of forecasts, econometric analysis of resource depletion, oil and gas finding rates, and various models of oil and gas supply. This volume documents the proceedings (papers and discussion) of the symposium.
Date: May 1982
Creator: Gass, Saul I.
Partner: UNT Libraries Government Documents Department
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Science and Technology: the Challenges of the Future

Description: Preface: On its 80th anniversary, the National Bureau of Standards hosted a series of lectures by six distinguished speakers of national and international note who discussed the challenges facing science and technology and, thus, the Bureau in the coming years. This publication contains the texts of these presentations, along with transcripts of the question-and answer sessions following the presentations. The lecture series was organized by Dr. Donald R. Johnson of NBS with the very able assistance of Mrs. Carol Shipley in making arrangements for speakers and handling the manuscripts. The staff of the NML Text Editing Facility are acknowledged for their substantial contributions of typing and editing support.
Date: May 1982
Creator: Johnson, Donald R.
Partner: UNT Libraries Government Documents Department
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Design for Better Window Performance

Description: Matrix diagram for design and construction of windows for energy conservation in buildings.
Date: May 1980
Creator: Hastings, S. Robert & Driscoll, Porter
Partner: UNT Libraries Government Documents Department
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Tables of Spectral-Line Intensities: Part 1, Arranged by Elements

Description: From Abstract: "Comparisons with other other intensity measurements in individual spectra indicate that the National Bureau of Standards spectral-line intensities may have average errors of 20 percent, but first of all they provide uniform quantitative values for the seventy chemical elements commonly determined by spectrochemists. These data are presented by element in part I, and all 39000 observed lines are given in order of wavelength in part II."
Date: May 1975
Creator: Meggers, William F.; Corliss, Charles H. & Scribner, Bourdon F.
Partner: UNT Libraries Government Documents Department
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Tables of Spectral-Line Intensities: Part 2 - Arranged by Wavelengths

Description: From Preface: "This new edition of the NBS Tables of Spectral-Line Intensities incorporates three improvements on the original edition of 1961. In the original edition only about 25 000 of the 39 000 lines in the tables had been classified. In the ensuing thirteen years, about 8500 more lines (chiefly rare-earths) have been classified and the new classifications are here incorporated."
Date: May 1975
Creator: Meggers, William F.; Corliss, Charles H. & Scribner, Bourdon F.
Partner: UNT Libraries Government Documents Department
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Time and Frequency: Theory and Fundamentals

Description: From Abstract: "This is a tutorial Monograph describing various aspects of time and frequency (T/F). Included are chapters relating to elemental concepts of precise time and frequency; basic principles of quartz oscillators and atomic frequency standards; historical review, recent progress, and current status of atomic frequency standards; promising areas for developing future primary frequency standards; relevance of frequency standards to other areas of metrology including a unified standard concept; statistics of T/F data analysis coupled with the theory and construction of the NBS atomic time scale; an overview of T/F dissemination techniques; and the standards of T/F in the USA. The Monograph addresses both the specialist in the field as well as those desiring basic information about time and frequency."
Date: May 1974
Creator: Blair, Byron E.
Partner: UNT Libraries Government Documents Department
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Space Groups and Lattice Complexes

Description: From Abstract: "The lattice complex is to the space group what the site is to the point group - an assemblage of symmetry-related equivalent points. The Tables list site sets and lattice complexes in standard and alternate representation. The higher the symmetry of the crystal structures is, the more useful the lattice-complex approach should be on the road to the ultimate goal their classification."
Date: May 1973
Creator: Fisher, Werner; Burzlaff, Hans; Hellner, Erwin & Donnay, J. D. H.
Partner: UNT Libraries Government Documents Department
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WR15 Microwave Calorimeter and Bolometer Unit

Description: Descriptions of the principal changes in the calorimeter and bolometer unit from the WR28 models of a microwave serving as National Bureau of Standards standard for power measurements in the frequency range 50 to 75 GHz.
Date: May 1972
Creator: Harvey, Morris E.
Partner: UNT Libraries Government Documents Department
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Hydrogen Stark Broadening Calculations With the Unified Classical Path Theory

Description: Report discussing the case of upper and lower state interaction introduced by a unified theory using a more compact tetradic notation. The general result is then applied to the Stark broadening of hydrogen. The thermal average of the time development operator for upper and lower state interaction is presented. A simple technique for evaluating the Fourier transform of the thermal average has been developed. The final calculations based on the unified theory and on the one-electron theory are compared with measurements in the high and low electron density regime.
Date: May 1970
Creator: Vidal, C. R.; Cooper, J. & Smith, E. W.
Partner: UNT Libraries Government Documents Department
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