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Now showing items 831-840 of 857
Role of photoperiod, temperature, and injury in induction and termination of the pupal diapause of Heliothis zea (Boddie)
(1968)
Investigations were conducted on bollworms, Heliothis zea (Boddie), reared on artificial diet under environmentally controlled conditions to determine the influence of photoperiod and temperature on the induction of pupal ...
An economic analysis of beef production and emerging technology on commercial cattle ranches in the southwest Texas High Plains area
(1968)
For many years, ranchers have been faced with relatively low returns to resources allocated to beef production. Structural changes in the beef production industry, adoption of new technology, an inelastic demand for beef, ...
Financing public schools in the state of Texas : a handbook for school administrators
(1968)
Problem. Volumes have been written explaining the various aspects of financing public schools below the college level in the State of Texas. The Texas State Legislature, the Texas Education Agency, the Texas State Teachers ...
Plasma interaction with a cylindrical magnetic field
(1965)
A combination of the sonic diffuser and plasma jet theories has been formed into a theory that explains the behavior of a plasma injected axially into a cylindrical magnetic field. The theory utilizes the plasma properties ...
Identification of plant parameters by application of implicit synthesis
(1964)
A new technique is developed for the characterization of an unknown dynamic plant. The technique is applied to simultaneously identify the unknown parameters A and B of a plant which is described by: A[d²X(t) / d²t] + ...
Binary phosphorus selenides: The reaction of phosphorus pentaselenide with alcohols
(1967)
The preparations of tetraphosphorus triselenide, P₄Se₃, and phosphorus pentaselenide, P₂Se₅ were investigated. A simple method was developed for the synthesis of P₄Se₃ in a very pure state. An optimum set of conditions was ...
Development of a research rotary kiln and a study of the effects of degree of thermal transformation on selected properties of synthetic aggregates
(1969)
Because of the increasing need for high quality aggregates of construction, a renewed emphasis has been placed upon the use of synthetic aggregates, which are thermally processed clays, shales and slates. As with most ...
The development and evaluation of linear stereoscopic teaching devices for college descriptive geometry
(1969)
The purpose of the research was to examine the potentialities and limitations regarding the development of linear stereoscopic illustrations as teaching devices in college level descriptive geometry. An additional purpose ...
A comparison of the effectiveness of two instructional procedures for developing safety attitudes in beginning machine woodworking
(1969)
The purpose of this study was to develop and assess the effectiveness of closed loop single concept safety films accompanied by lectures with the lecture-demonstration method in developing safety attitudes within beginning ...