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Now showing items 31-40 of 139
Studies of flow redistribution of external parallel coolant or moderator flow through tube bundles
(1968)
The problem of transverse flow redistribution for geometries of interest to nuclear reactor technology are investigated from a macroscopic point of view by studying methods of solving the pertinent equations, their finite ...
The effectiveness of three social studies teaching-learning situations in fostering affective and cognitive change
(1968)
Purpose The purpose of this study was to determine whether students exposed to three different instructional modes would learn different degrees of conceptual content and would reflect shifts in attitude related to a current ...
Photoperiodic induction of the larval diapause in the pink bollworm, Pectinophora gossypiella (Saunders): sensitivity of various developmental stages to photoperiod and rate of diapause induction
(1968)
The photoperiodic control of the larval diapause of the pink bollworm, Pectinophora gossypiella (Saunders) was studied in order to better understand the mechanism by which daylength controls the seasonal development of ...
The use of a blackboard-by-wire electronic communication system and programmed materials for the enrichment of mathematics teaching in selected Texas schools
(1968)
This study investigated the use of an electronic communication system when used with programmed curricular material in an attempt to enrich the instructional program of selected secondary schools of East Central Texas. The ...
Synthetic studies on anion and radical induced olefin cyclizations
(1968)
Anion Cyclizations The synthesis of cis-methyl-11-bromoundec-6-enoate and the attempted synthesis of trans-methyl-11-broinoundec-6-enoate, model compounds for anion cyclization, are presented. These compounds contain a ...
Recoil tritium reactions with organosilicon compounds
(1968)
A detailed examination of recoil tritium reactions with organosilicon compounds was made in order to determine what part chemical factors played in controlling hot reaction products. Also, the formation of some type of ...
Phase equilibria studies of polystyrene and cyclohexane solutions at various pressures
(1968)
The precipitation temperature for each volume fraction of polystyrene in cyclohexane tested increased with increasing pressure. The Flory theta temperature increases almost 1° K for a pressure increase of 200 atmospheres. ...
Low-frequency vibrations and the determination of structure in non-rigid molecules
(1968)
The gas phase far-infrared spectrum of 3-cyclopenten-1-one was recorded in the range 50-400 cm�¹A progression of five Q branches was observed between 80 and 95 cm�¹. This series was assigned to transitions of the ...
Nutrient limitation determinations for a Texas watershed
(1968)
This study involves the development of techniques of limiting nutrient determinations for the specific conditions found in a Texas river, the Trinity. The methods presently available for the determination of which factors ...