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  Partner: UNT Libraries Government Documents Department
 Decade: 1970-1979
 Year: 1971
 Month: June
 Collection: Technical Report Archive and Image Library
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
Development of Polyphenylene Oxide Membranes

Development of Polyphenylene Oxide Membranes

Date: June 1971
Creator: Chludzinski, Paul; Austin, J. F. & Enos, J.
Description: Report concerning manufacturing variables on sulfonated polyphenylene oxide reverse osmosis membranes. The effects these variables have membrane performance are discussed as well as procedures to increase membrane reproducibility and performance.
Contributing Partner: UNT Libraries Government Documents Department
The Effect of Time Ordering on the Lyman α Profile

The Effect of Time Ordering on the Lyman α Profile

Date: June 1971
Creator: Godgrey, J. T.; Vidal, C. R.; Smith, E. W. & Cooper, J.
Description: Report investigating the effects of time-ordering over the complete line profile using a unified theory of spectral line broadening previously developed. The behavior of the time-ordered thermal average and un-time-ordered thermal average are compared. The Fourier transform of the thermal average is obtained analytically. Calculations for the line profile of the Lyman-[functional symbol alpha] line of hydrogen are presented and are representative in that the full thermal average is replaced by the thermal average with the electron velocity distribution approximated by f(v)=[functional symbol alpha] (v-vav) where vav is the thermal velocity for the plasma in question.
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
Seawater Tubular Reverse Osmosis Membranes

Seawater Tubular Reverse Osmosis Membranes

Date: June 1971
Creator: King, W. M. & O'Hair, M. L.
Description: None
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