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  Partner: UNT Libraries Government Documents Department
 Decade: 1970-1979
 Collection: Technical Report Archive and Image Library
Coal Mining Techniques in the Federal Republic of Germany - 1971

Coal Mining Techniques in the Federal Republic of Germany - 1971

Date: 1974
Creator: Curth, Ernest A.
Description: Report issued by the U.S. Bureau of Mines discussing studies conducted on coal mining techniques used in Germany. The study of roof support evaluation techniques is emphasized. This report includes maps, tables, illustrations, and photographs.
Contributing Partner: UNT Libraries Government Documents Department
Interactions of High Energy Particles With Nuclei

Interactions of High Energy Particles With Nuclei

Date: September 1975
Creator: Czyz, Wieslaw
Description: Report discussing elastic scattering and diffractive production processes induced in nuclear targets by high energy projectiles. Special attention is paid to the interaction of high energy hadrons and photons. The common features of all these processes are emphasized throughout the article: The multiple scattering and shadowing processes inside of the target nuclei. An effort is made to develop a unified way of treating nuclear interactions of particles which are either hadrons or exhibit some hadronic components in such interactions.
Contributing Partner: UNT Libraries Government Documents Department
Oil Yields and Stratigraphy of the Green River Formation's Tipton Member at Bureau of Mines Sites Near Green River, Wyoming

Oil Yields and Stratigraphy of the Green River Formation's Tipton Member at Bureau of Mines Sites Near Green River, Wyoming

Date: 1972
Creator: Dana, George F. & Smith, John Ward
Description: Report issued by the Bureau of Mines over the oil yields at the Green River. The average oil yields from the area are discussed. This report includes tables, and illustrations.
Contributing Partner: UNT Libraries Government Documents Department
Relativistic Many-Body Bound Systems

Relativistic Many-Body Bound Systems

Date: 1975
Creator: Danos, Michael & Gillet, Vincent
Description: Report containing "[t]he principles and the mathematical details of a fully relativistic nuclear theory" (p. v). Appendix begins on page 124.
Contributing Partner: UNT Libraries Government Documents Department
Relativistic Many-Body Bound Systems: Electromagnetic Properties

Relativistic Many-Body Bound Systems: Electromagnetic Properties

Date: April 1977
Creator: Danos, Michael & Gillet, Vincent
Description: 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.
Contributing Partner: UNT Libraries Government Documents Department
Development of a Thin-Liquid-Film Membrane Device for Reverse Osmosis

Development of a Thin-Liquid-Film Membrane Device for Reverse Osmosis

Date: April 1971
Creator: Davies, D. S.; Bemberis, I.; Wong, Chung-ming; Savage, W. F. & Channabasappa, K. C.
Description: Report issued by the Office of Saline Water over studies conducted on reverse-osmosis plants. The results of the studies are presented and discussed. This report includes tables, and illustrations.
Contributing Partner: UNT Libraries Government Documents Department
Construction of a Large Transverse Electromagnetic Cell

Construction of a Large Transverse Electromagnetic Cell

Date: February 1979
Creator: Decker, W. F. & Wilson, W. A.
Description: 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.
Contributing Partner: UNT Libraries Government Documents Department
Reuse and Subsurface Injection of Municipal Sewage Effluent: Two Case Histories

Reuse and Subsurface Injection of Municipal Sewage Effluent: Two Case Histories

Date: 1971
Creator: Donaldson, Erle C. & Bayazeed, Abdo F.
Description: Report issued by the U.S. Bureau of Mines discussing sewage disposal and reuse. As stated in the introduction, "this paper describes the renovation of municipal sewage water for industrial use, and the use of subsurface waste disposal by an industrial complex and by a city" (p. 1). This report includes tables, and illustrations.
Contributing Partner: UNT Libraries Government Documents Department
Spin tests of a low-wing monoplane to investigate scale effect in the model test range, May 1941

Spin tests of a low-wing monoplane to investigate scale effect in the model test range, May 1941

Date: January 1, 1976
Creator: Donlan, C. J.
Description: Concurrent tests were performed on a 1/16 and a 1/20 scale model (wing spans of 2.64 and 2.11 ft. respectively) of a modern low wing monoplane in the NACA 15 foot free-spinning wind tunnel. Results are presented in the form of charts that afford a direct comparison between the spins of the two models for a number of different conditions. Qualitatively, the same characteristic effects of control disposition, mass distribution, and dimensional modifications were indicated by both models. Quantitatively, the number of turns for recover and the steady spin parameters, with the exception of the inclination of the wing to the horizontal, were usually in good agreement.
Contributing Partner: UNT Libraries Government Documents Department
Methods of analyzing wind-tunnel data for dynamic flight conditions

Methods of analyzing wind-tunnel data for dynamic flight conditions

Date: January 1, 1976
Creator: Donlan, C. J. & Recant, I. G.
Description: The effects of power on the stability and the control characteristics of an airplane are discussed and methods of analysis are given for evaluating certain dynamic characteristics of the airplane that are not directly discernible from wind tunnel tests alone. Data are presented to show how the characteristics of a model tested in a wind tunnel are affected by power. The response of an airplane to a rolling and a yawing disturbance is discussed, particularly in regard to changes in wing dihedral and fin area. Solutions of the lateral equations of motion are given in a form suitable for direct computations. An approximate formula is developed that permits the rapid estimation of the accelerations produced during pull-up maneuvers involving abrupt elevator deflections.
Contributing Partner: UNT Libraries Government Documents Department