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Now showing items 191-200 of 403
Performance requirements for flexible pavement
(1969)
This study involved the development of performance requirements to satisfy thermal distress in a high quality surface course for flexible pavement. The four requirements determined were for long term or thermal equilibrium, ...
Some immediate effects of a smoking environment on children of elementary school age
(1969)
Purpose [line break] The purpose of this study was to determine the immediate effects of a cigarette smoking environment on children of elementary school age. Special emphasis was made to determine the extent to which a ...
The determination of trace levels of oxygen and carbon by charged particle activation analysis
(1969)
Research and development in ultrapure materials require analytical methods with sensitivities in the part per million to part per billion range for many of the light elements. Current analytical methods are of limited ...
Cardiac arrhythmias: their production and prevention by several pharmacological agents in the dog
(1969)
The arrhythmogenic properties of three commonly used thiobarbiturates (thiamylal, thiopental and thialbarbitone) were studied in the dog. The most cardiotoxic of these three, thiamylal, was used to assess the influence of ...
An experimental comparison of programmed instruction and lecture-demonstration methods of teaching descriptive geometry
(1969)
The purpose of this study was to develop programmed instruction booklets and measure their effectiveness for self-instruction in descriptive geometry at the college level. More specifically, this problem involved: (1) ...
Solutions of second-order forced systems possessing hysteresis
(1969)
This work develops a method for the solution of second-order forced systems possessing hysteresis over an initial time interval, t₀[less than or equal to]t[less than or equal to]t₀+T. The specific problem that is treated ...
A variable-reduced-mass model for quasilinear molecules with application to HSiBr
(1969)
A Hamiltonian for large amplitude bending and K-type rotation of triatomic molecules has been derived. The complete dependence of the kinetic energy on the bending angle is included. The Hamiltonian contains two terms in ...
On the location of zeros of bipolar polynomials
(1969)
In this dissertation we have considered triplets of polynomials with real coefficients and of the same degree whose coefficients are related in a certain algebraic manner. Properties of this algebraic relationship and its ...
Physical properties of some binuclear copper (II) complexes
(1969)
The copper(II) complexes of citric acid and N,N'-diglycylethyl-enediamine have been studied in aqueous solutions in the pH range 2 to 10 electron spin resonance, nuclear magnetic resonance, optical spectrophotometry, and ...
Differentiation in programs of study and supervised experiences in elementary school counselor preparation programs in the United States
(1969)
The three major objectives of the research were: 1. to ascertain the degree to which United States counselor education programs were differentiating their programs of study and supervised experiences for candidates for ...