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Now showing items 351-360 of 403
A licensing program for operators of two-wheeled motor vehicles
(1969)
This study was conducted to develop and evaluate a licensing program for operators of two-wheeled motor vehicles. The specific materials developed were: 1) a driver's handbook, 2) two forms of a written test, 3) an off-street ...
Investigation of gas species generation by electrically exploding wires at low pressure
(1969)
A series of metallic wires of 10.5 inches in length were electrically exploded in a steel chamber 13.625 inches in diameter and 4 feet in length. The gases in the chamber before and after the explosion were determined using ...
Changing concepts in instructional procedures in high school history teaching since 1900
(1969)
The purpose of this study is to trace the development of classroom instructional procedures in high school history teaching since 1900 as reflected in the professional literature of the period, with special reference to ...
The development and evaluation of an instrumentation system for use in scattered light photoelasticity
(1969)
A program was conducted to develop and instrumentation system to be used for obtaining accurate measurements of the interference fringe spacing in scattered light photoelasticity. To circumvent difficulties in modulating ...
Chilling injury in okra (Hibiscus esculentus L.) and the relationship of chilling to nitrogen, amino acids, proteins and nucleic acids
(1969)
The effect of low temperature at two relative humidities on the development of okra plants and changes in total and soluble nitrogen, free amino acids and proteins were studied. The levels of RNA and the rates of RNA and ...
The effect of intra-arterial hydrogen peroxide on the healing of standardized ischemic lesions in rabbits
(1969)
The effect of the intra-arterial infusion of dilute hydrogen peroxide on the healing rates of ischemic lesions was investigated based on the proposal that an increased healing rate could be achieved through the alleviation ...
Correlation of teacher attitudes with learning among selected disadvantaged elementary students
(1969)
Purpose of the Study: The study was concerned with the investigation of teacher attitudes toward disadvantaged pupils in an Elementary and Secondary Education Act Title I Project in San Antonio, Texas. Procedures: Six ...
Factors affecting the educational and career choices of agricultural education graduates at Texas A & M University, 1960-1964
(1969)
Purpose [line break] The purposes of this investigation were to (1) obtain information concerning the careers of graduates of the Department of Agricultural Education at Texas A&M University to the end that bases could be ...
Ecological and phenological characteristics of perennial broomweed
(1969)
Phenological and ecological characteristics of perennial broom-weed (Xanthocephalum sarothrae (Pursh) Shinners and X. microcephalum (DC.) Shinners), species toxic to livestock, were investigated at six locations in western ...
An analysis of the radiation characteristics of asymmetrically-driven thin linear antennas
(1969)
A study is made of the radiation characteristics of the thin, linear antenna of arbitrary length and driving-point location. A compact algebraic expression for the radiation field of this antenna is found, a special case ...