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  Partner: UNT Libraries Government Documents Department
 Decade: 1970-1979
 Year: 1971
 Collection: Technical Report Archive and Image Library
A Technique for Quantifying Forest Stands for Management Evaluations

A Technique for Quantifying Forest Stands for Management Evaluations

Date: December 1971
Creator: West, Henry W. & Allen, H. H.
Description: "In this study, a system for describing the three-dimensional geometry of trees and stands is presented. The system consists of two survey instruments, a theodolite and transit, and basic triangulation principles. A spotting laser has recently been added to the system to facilitate the spotting of the tree nodes to be surveyed" (p. ix). Results show significant differences in tree productivity as a result of fertilization and changes in heights, bole diameters, etc.
Contributing Partner: UNT Libraries Government Documents Department
Trafficability of Soils: Effects of Surface Conditions on Drawbar Pull of a Wheeled Vehicle

Trafficability of Soils: Effects of Surface Conditions on Drawbar Pull of a Wheeled Vehicle

Date: April 1971
Creator: Rush, Edgar S. & Robinson, J. H.
Description: "A study was conducted to (a) investigate the effects of soil surface conditions on one-pass drawbar pull capabilities of a wheeled vehicle, (b) relate optimum drawbar pull to soil strength as measured by several instruments, (c) develop tentative equations for predicting optimum tractive coefficient, and (d) determine effects of tire characteristics (tread pattern and deflection) on drawbar pull. One hundred and six drawbar pullslip tests were conducted with a 3/4-ton M37 truck at a gross weight of 7240 lb. One tire size (9.00-16, 8-PR), two tread patterns (smooth and nondirectional military), and two tire deflections (15% and 35%) were tested. Surface conditions varied from dry and firm, to wetted with small amounts of water, to flooded. Asphalt surfaces also were tested" (p. xi).
Contributing Partner: UNT Libraries Government Documents Department
Deflection-Coverage Relationship for Flexible Pavements

Deflection-Coverage Relationship for Flexible Pavements

Date: June 1971
Creator: Joseph, Alfred H. & Hall, Jim W.
Description: Summary: "This study was conducted for the purpose of developing a relationship between elastic pavement deflection and pavement performance (number of traffic applications necessary to cause failure). Data for the study were taken from past studies of airfield and highway pavements. A summary of test conditions, failure criteria, and traffic type is given for each data source. A relationship was developed between elastic deflection and the number of coverages of traffic for combined airfield and highway data and for airfield data only. The relationship of wheel load and tire pressure is given, and a multiple-regression equation was determined to predict coverages as a function of wheel load, tire pressure, and deflection" (p. xi).
Contributing Partner: UNT Libraries Government Documents Department
Shock-Absorbing Materials, Report 2: Cellular Concrete as a Backpacking Material

Shock-Absorbing Materials, Report 2: Cellular Concrete as a Backpacking Material

Date: June 1971
Creator: Hoff, G. C.
Description: Partial abstract: "The use of low-density cellular concrete, having an oven-dry unit weight of 50 pcf or less, as a backpacking material for deeply buried protective structures was studied. Cellular concrete was found to be suitable for this type of application. A number of physical properties of cellular concrete were determined to provide input to design codes" (p. 4).
Contributing Partner: UNT Libraries Government Documents Department
Natural History of the Swainson's Warbler

Natural History of the Swainson's Warbler

Date: January 1971
Creator: Meanley, Brooke
Description: Summary of Swainson's warbler, including history, geographic distribution, migration patterns, ecological relations, physical description, breeding biology, voice qualities, and feeding behavior.
Contributing Partner: UNT Libraries Government Documents Department
Design for a Variable-Output-Coupling Far-Infrared Michelson Laser

Design for a Variable-Output-Coupling Far-Infrared Michelson Laser

Date: January 1971
Creator: Wells, J. S.
Description: Technique for varying the coupling of power from far-infrared gas lasers and the design and construction of these lasers.
Contributing Partner: UNT Libraries Government Documents Department
Construction of a Flashlamp-Pumped Dye Laser and an Acousto-Optik Modulator for Mode-Locking

Construction of a Flashlamp-Pumped Dye Laser and an Acousto-Optik Modulator for Mode-Locking

Date: July 1971
Creator: Jennings, D. A.
Description: Design of a flashlamp-pumped dye laser capable of emitting light pulses 500 ns wide with a risetime of 300 ns.
Contributing Partner: UNT Libraries Government Documents Department
Glass Limit Standards Deposited at NBS for Railway, Highway, and Airways Traffic Signal Colors: History, Permanence and Colorimetric Properties

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

Date: June 1971
Creator: Haupt, Geraldine W.
Description: Permanence and colorimetric properties of signal glass.
Contributing Partner: UNT Libraries Government Documents Department
Molten-Salt Reactor Program Semiannual Progress Report, February 28, 1971

Molten-Salt Reactor Program Semiannual Progress Report, February 28, 1971

Date: August 1971
Creator: Oak Ridge National Laboratory
Description: Report containing ongoing projects and experiments undertaken by the Oak Ridge National Laboratory's Molten-Salt Reactor Program.
Contributing Partner: UNT Libraries Government Documents Department
Health and Safety Laboratory Fallout Program Quarterly Summary Report: September 1, 1970 - December 1, 1970, Appendix

Health and Safety Laboratory Fallout Program Quarterly Summary Report: September 1, 1970 - December 1, 1970, Appendix

Date: January 1, 1971
Creator: U.S. Atomic Energy Commission. Health and Safety Laboratory.
Description: Report documenting radioactive fallout across the world, including both material in the atmosphere and that has deposited into food supplies. This appendix includes tables of monthly fallout deposition collections from 116 sites across the Earth and a list of radionuclides and their half-lives.
Contributing Partner: UNT Libraries Government Documents Department
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