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Now showing items 41-50 of 179
A study of the effect of ethylene on auxin transport in cotton and its relationship to abscission
(1969)
An ethylene mediated inhibition of basipetal auxin transport in stem and petiole sections of cotton (Gossypium hirsutum L. var. Stoneville 213) was investigated using ¹⁴C labeled IAA and NAA. The purpose of this investigation ...
A consistent first-order nonlinear shell theory
(1969)
A general nonlinear theory of shells is derived. The theory is valid for large extensions, shear and rotations. The large rotations of the shell are described in detail. The measures of bending deformation then are written ...
A study of the production and propagation of high energy cosmic ray muons
(1969)
A critical reexamination of the diffusion of cosmic rays in the atmosphere is made. The incorrectness of the use of λ[subscript π], the pion attenuation mean-free-path, in the diffusion model is demonstrated. The muon ...
The isolation, identification and biochemical studies of phenolic acids from distillers dried solubles
(1969)
Studies were conducted to determine the phenolic acid composition of DDS, the sequestering property of phenolic acids and the biochemical involvement of phenolic acids (p-hydroxybenzoic and gentisic acids) in the metabolism ...
Neocortical and other modulating influences on the "immobility reflex."
(1969)
This study was undertaken to determine the influences of the neocortex on the neural mechanisms involved in the immobility reflex (animal hypnosis). Phylogenetically, an inverse relationship exists between the relative ...
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) ...