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Now showing items 511-520 of 549
An economic analysis of the long-run timber market in East Texas
(1980)
This study was initiated to determine possible demand and supply equilibria in the East Texas timber market for the year 2000. The demand and supply schedules were developed independently, using two separate analytical ...
An economic model for planning combination small stock-cattle herd development : an application to Edwards Plateau, Texas
(1980)
Ruminant production systems analyses, in the past, has focused on cattle. An increasing demand for red-meat production, low cattle prices in the early 1970's and increasing prices for the small stock classes and their ...
Characteristics of repressors vs. sensitizers on selected personality variables
(1980)
The primary purpose of this study was to compare the self-report characteristics of individuals who display tendencies to approach threatening stimuli (sensitizers) with those of individuals who display tendencies to avoid ...
The transport and utilization of purine and pyrimidine nucleosides and bases by germinating conidia of Neurospora crassa
(1980)
The relationship between intracellular enzymes involved in the utilization of uracil, uridine, and adenosine and the transport of these compounds by germinating conidia of Neurospora crassa was investigated. Crude extracts ...
Effects of environmental and artificial light and the relationship of the pineal gland upon the reproductive biology of the Brahman cow (Bos indicus)
(1980)
A series of three experiments were undertaken characterizing the Brahman cow as a seasonal breeder. The addition of light to create a daylength of 14 hours appeared to increase the reproductive capabilities of Brahman ...
Anatomy and morphology of vitis roots in relation to pathogenesis caused by Phymatotrichum omnivorum (Shear) Duggar
(1980)
Among 4 cultivars studied, Vitis Champini Planch cv. Dogridge demonstrated the greatest plant vigor and host tolerance to Phymatotrichum root rot caused by Phymatotrichum omnivorum (Shear) Duggar. V. rotundifolia Mich x ...
Aerial photograph use in developing and testing a geographic data base for pecan (Carya illinoensis (Wangenh.)
(1980)
A geographically referenced data base of the native pecan in portions of Texas was compiled from color infrared aerial photographs at a scale of 1/10,000. The Universal Transverse Mercator grid system was employed to ...
Nonparametric modeling of the covariance structure of regionalized variables
(1980)
In this dissertation, an approach to representing the covariance structure of spatial random variables is presented. A number of methods for fitting polygonal functions to variograms are demonstrated. Techniques for ...
The role of the school public relations director in collective negotiations as perceived by school public relations directors and superintendents of schools
(1980)
The purpose of the study was to determine the role of the school public relations director in collective negotiations as perceived by school public relations directors and superintendents of schools. The study also compared ...