The cyclopropene fatty acids, sterculic and malvalic, occur
naturally in a major food lipid, cottonseed oil, and have been implicated
in several physiological disorders. Rainbow trout in this
study were fed semipurified diets containing 200 or 300 ppm methyl
sterculate, and the effects on hepatic lipid and glycogen levels,
lipid...
A population of the Douglas-fir cone moth, Barbara colfaxiana
(Kft. ), was studied on the Buckhead Seed Production Area, Oakridge,
Oregon, during 1971 and 1972. A method of estimating cone and
insect populations is presented. Factors contributing to the mortality
of B. colfaxiana are discussed, with resinosis being the critical...
Paleozoic limestones, dolomites, quartz arenites, and other
clastic rocks were mapped in the vicinity of Dobbin Summit and
Clear Creek in the central Monitor Range. Sedimentary rock units
present in this area represent the shallow-shelf eastern assemblage
and basin and also the basin-slope facies of the traditional limestoneclastic
assemblage.
The...
Interval arithmetic is applied to the problem of obtaining
rigorous solutions to integral equations on a computer. The
integral equations considered are the linear Fredholm equation of
the second kind and the nonlinear Urysohn equation. Techniques are
presented which enable the computer to find an approximate
solution, prove the existence...
Major emphasis of this research study involved the evaluation
of nutrient transport by overland flow. Samples gathered at various
distances relative to a swine-waste spray irrigation system were
used for the nutrient evaluation.
As a result of this study, the following conclusions are made:
1. It is improbable that the...
This study was undertaken as a result of an interest in the
present and future purposes and functions of higher education.
American society and higher education are moving through a period
of change. Since each shapes and is shaped by the other, change in
either may require a review and...
In the summers of 1973, 1974 and 1975, I investigated population
age structure and density, and behaviors relating to habitat
selection, predator avoidance and intraspecific interaction in a population
of northwestern salamanders in a lake in the Oregon Cascade
Mountains. The study was carried out by skin- and scuba-diving at...
This study was designed to investigate the effects of group
counseling on the self concept and academic achievement of high
school sophomore health classes. Specific hypotheses to be examined
were:
1. The experimental group will evidence more improvement in
academic achievement score than will the control group.
2. The experimental...