Search
Now showing items 31-40 of 179
A study of buildings and equipment in Texas junior college drafting technology programs with implications for a planning guide
(1969)
Purpose of research. -- The purpose of this research was to gather information about the buildings and equipment of Texas junior college drafting technology programs. Data collected were used to prepare implications for a ...
The in vivo and in vitro effects of selenium on some of the hydrolytic enzyme activities from tissues of normal and vitamin E-deficient chicks
(1969)
Tissues from chicks with exudative diathesis symptoms resulting from vitamin E-deficiency showed that there were increases in the hydrolytic activities of β-glucuronidase, cathepsin and acid phosphatase when compared with ...
An energy balance method of fracture prediction in elastomers and elastomeric composites
(1969)
The problem of predicting crack type failures in elastomers has been a continuing one. The usual practice has been to use one of the classical failure theories to extrapolate failure data collected from laboratory or scale ...
The effects of depressed root temperatures on the systemic infection of Nicotiana tabacum L. and Lycopersicon esculentum Mill. by tobacco mosaic virus
(1969)
A series of experiments was carried out to support or negate the hypothesis that depressed root temperatures have an immobilizing effect on the translocation of tobacco mosaic virus within tobacco and tomato plants or ...
Requirements and opportunities for entry workers in the occupation of producing and marketing ornamental nursery and greenhouse specialties
(1969)
Purpose [line break] The purpose of this study was to identify the types of competences needed by entry workers in the horticultural industry and to describe the occupation for those considering the industry as an occupational ...
An experiment to determine the effectiveness of slides and audio-tapes for presenting manipulative demonstrations in graphic arts
(1969)
The purpose of the study w as to compare a slide-tape method of presenting demonstrations with teacher-presented demonstrations in junior high school graphic arts. The experiment was designed to examine initial learning ...
Effects of an experimental study aid on achievement in plane trigonometry of Texas A&M University students
(1969)
Statement of the Problem [line break] The purpose of this study was to determine the effects of an experimental study aid on university students' achievement in plan trigonometry. [line break] Description of Procedures ...
An analysis of factors related to the loss and retention of freshmen students at Tarleton State College for the academic years 1964 through 1966
(1969)
Purpose [line break] The purpose of this study was to identify and analyze factors as they relate to the withdrawal end persistence of first-time-in-college students. The specific objectives which served as guidelines for ...
An instructional communication system to supplement the teaching of high school physics
(1969)
The purpose of this study was to develop instructional learning units for a blackboard-by-wire electronic communication system (BBW) and to evaluate the effectiveness of this system as a mode of instruction in selected ...