The purpose of this study of the life and career of Dr. Carl
Leonard Anderson was to recount his professional contributions to
the field of health and relate these to public health and health education. The major emphasis of this study concerned Dr. Anderson's
professional life.
The accomplishment of the...
Borrowed funds finance a majority of equipment purchases and
production costs in agriculture. The costs of borrowing, however,
have not been stable nor has the determination of interest payments
remained the same in recent years. As interest rates become increasingly
volatile and variable rate loans replaced constant rate
loans, the...
The purpose of this study was to test two assumptions. They
are that factors in a child's background correlate with the notion of
conservation and that additional mathematical instruction will result
in a higher level of maturity of the notion of conservation as well as
increased achievement in mathematical skills....
Environmental factors such as chemical contamination can have immunomodulatory effects on the immune response of fish and may be contributing to the decline in salmonid populations by augmenting disease susceptibility. Xenobiotics can interfere with the immune system at several levels of complexity, and different immune cells and processes have variable...
Sex differentiation in fish is a labile process that allows sex inversion in several species. The inherent capacity of fish germ cells to differentiate into oocytes or spermatocytes constitutes a key factor allowing for functional sex inversion. This thesis set out to determine the mechanism involved in steroid-induced sex differentiation...
The purpose of this study was to determine the possible problem areas in families with a diet-treated phenylketonuric child. Phenylketonuria is an inborn error of metabolism, which in the past caused mental retardation as well as behavioral disturbances. Initially the discovery of diet therapy eliminated the behavioral disturbances, but not...
The data gathered for the study of the health status of freshmen
at Oregon State University were derived by an analysis of health history
records. These were obtained from the Oregon State University
Health Service. The years sampled were 1930, 1940, 1950 and 1960;
300 freshman male and 300 freshman...
The purpose of this thesis is to present the results of a study
of the impacts of the Conservation Reserve Program, Title XII of the
Food Security Act of 1985, on the economies of small communities
located in Gilliam, Morrow and Umatilla Counties in Oregon. These
counties are representative of...
From a landscape ecology perspective, meadows are often seen as landscapes in
transition. Succession and change in meadows may be investigated by considering the
physical and anthropogenic factors that influence the landscape through time. What is
often unknown is how changes occur and how physical and anthropogenic factors
contribute to...
Historically, researchers have used surveys, focus groups, and anecdotal evidence to evaluate consumer response to environmentally certified, ecolabeled forest products. These methods generally measure consumer attitudes toward certified forest products. Since the strength of the correlation between attitudes
and behavior has long been questioned, consumer response to certified forest products...
Seven streams, one of them permanent, were studied in
western Oregon, USA. The research was designed to assess
the value of summer-dry headwaters for conservation
oriented landscape management. Streams were categorized
primarily according to exposure (forest versus meadow
sites) and secondarily according to flow duration
(ephemeral = short-flow versus temporary...
The activity of deoxyribose-phosphate aldolase was determined
in chick embryo brains, hearts and livers during the course of development.
Assays were made in the direction of synthesis of deoxyribose-5-phosphate. Low levels of activity in the brain and heart
remained constant throughout the course of development. Activity in
the liver expressed...
Efforts to manage stocks of salmonids in Pacific Northwest stream systems are complicated by the occurrence of several runs of a species thought to represent races rearing sympatrically as juveniles. In order to collect the population statistics needed to properly manage these stocks, managers need a method of identifying juvenile...
Sexual maturation and sex differentiation comprise facets of a
common theme: reproduction. The endocrine system regulates many
of the critical physiological processes necessary for reproduction and
offers a framework within which technologies can be developed for
controlling sexual maturation and sex differentiation. The studies
described in this thesis were undertaken...
Sixty nonindustrial small-forest owners were interviewed in
Lane County, Oregon to determine their objectives for forest lands,
and knowledge of and attitudes toward public assistance in forestry.
Owners were randomly sampled from a preselected size class
of 10 to 200 acres. A formal questionnaire was used to measure
forest land...
The purpose of this research was to explore the perceptions of employers, teachers and graduates of the Oregon Carl Perkins Single Parent/Displaced Homemaker Programs regarding non-technical employment qualities. The Luft "Non-Technical Employment Qualities Survey Instrument" and open-ended questions were used to elicit personal responses from members of each group for...
Diseases caused by parasites are recognized as significant sources of mortality in wild fish populations. I assessed the impacts of multispecies parasitism on a threatened stock of juvenile coho salmon (Oncorhynchus kisutch). A crucial prerequisite to this research was proper identification of parasites, which can be difficult for species lacking...
The purpose of this thesis is to discuss concepts and strategies that provide a general framework which can be used to develop a microcomputer simulation model for educating senior public officials on the linkages between the macroeconomy and agriculture in a developing country. Tradition has it that agriculture is preeminently...
First introduced to the USA in 1958, Myxobolus cerebralis, the parasite responsible for whirling disease in salmonids, has since spread across the country causing severe declines in wild trout populations in the intermountain west. Recent development of risk assessment models used to assess the likelihood and consequences of exotic parasite...
Wood plays a key role in modern electrical infrastructure; crossarms and power poles utilize the high strength to weight ratio, availability and low cost of wood to facilitate the access of power to millions of Americans. However, wood presents a variety of challenges as a material. In structural applications, one...
The environment under which fish are maintained as broodstock before
reproduction is often stressful; however, the impact of stress on broodstock and gamete
quality is not well known. We investigated the effects of stress over the final stages (i.e.
the 3 months preceding ovulation) of sexual maturation of female rainbow...
The central purpose of this comparison was to determine the congruence
or difference between two teaching techniques, the programmed
multimedia approach and the traditional teaching method as used in presenting
drug information to eighth grade students in the Mankato,
Minnesota school district. The population sample consisted of 391
students enrolled...
The study was undertaken to determine if the construct and vocabulary
of systems theory are related to academic performance such that
a) the understanding of either or both can predict grade-point average
for college students, and b) the explicit teaching of both construct
and vocabulary to minority students can improve...
The western purple martin (Progne subis arboricola) is a species of conservation concern throughout the Pacific Northwest. In western Oregon, the purple martin nests in three major ecosystem types: inland open-water, coastal, and upland forest. The availability of suitable breeding habitat is a major limiting factor for western purple martin...
Pacific lamprey (Entosphenus tridentatus) are experiencing population declines throughout their range. Xenobiotics could be an important risk factor for lamprey populations. Our goal was to establish if common herbicides, as used in forest management, could affect reproductive fitness. We determined that atrazine was a likely compound of greatest concern to...
The purpose of this thesis is to examine gender and historical bias in wind band music and related practices in the Pacific Northwest. This research was conducted via an IRB approved research study, Equity and Gender Bias in High School Music Programming in the Pacific Northwest: A Case Study, which...
Juvenile Chinook salmon (Oncorhynchus tshawytscha) exhibit an array of life history tactics in Oregon's Willamette River Basin, yet we do not know to what extent it is driven by phenotypic plasticity or whether it is predetermined and how conditions in the early rearing environment may affect phenotype expression. We have...
The importance of hormone reservoirs in mature teleost eggs is
unknown. To elucidate the effects of hormones on embryonic development,
steelhead trout eggs, Oncorhynchus mykiss, were immersed in either cortisol,
testosterone, or thyroxine at two different stages of development. Elevated
concentrations of cortisol were detectable in the trout eggs or...
The study resulted from a desire and interest to include computer
simulation techniques in the design of educational practices.
The purposes of the study were (1) to develop a computer model which
would simulate the service functions of a counseling center by tracing
students through the center and (2) to...
Stress, including extreme or rapidly changing temperatures, are known to have deleterious effects on fish health and physiology. This thesis examines the combined effects of elevated acclimation temperature and acute handling stress on the number of antibody producing cells, plasma lysozyme concentrations, and the number of pronephric leukocytes in juvenile...
More than 1500 species of plants and animals in the United States are listed as threatened or endangered under the Endangered Species Act (ESA). The U.S. Departments of Interior and Commerce are required, under Section 4(f)(1) of the ESA, to develop recovery plans for ESA-listed species under the respective agency...
We examined the behavioral and physiological responses of wild
and hatchery-reared cutthroat trout Oncorhynchus clarki subjected to
a single electroshock, electroshock plus marking, and multiple
electroshocking in natural and artificial streams. In a natural
stream, trout released after capture by electrofishing and marking
showed distinct behavioral changes: fish immediately sought...
This dissertation provides a comparison of statistical and econometric frameworks, using a previously unused freight data source, to study crash frequency by crash type and heavy-vehicle hard braking in Oregon. Hard braking can serve as a proxy for several factors, one of which is safety. Therefore, with the hard braking...
The work presented in this dissertation examines possible
modes of action for growth inhibition by anthropogenic endocrine
disrupting chemicals (EDCs) as well as endogenous hormones
associated with growth in fish. Using the sheepshead minnow (SHM)
(Cyprinodon variegatus) as a model, I developed methods to examine
perturbations in the endocrine axis...
A study of the population ecology of Columbia River fall chinook
salmon, Oncorhynchus tshawytscha (Walbaum), was made in an attempt
to determine the cause of a serious decline in this run which occurred
in the early 1950's. Fluctuations in abundance of major salmon runs
the North Pacific were examined to...
The atmospheric trace element abundances associated with slash
burning have been measured by instrumental neutron activation analysis
(INAA). On site ground level samples were collected during the slash
burning season using high volume samplers and a cascade impactor. In
addition to the air samples, soil, wood and ashed wood samples...
Commerical preparations and published formulations using reagent chemicals for seawater substitutes were not biologically acceptable to Mytilus edulis embryos, in that calcification did not occur. When Leslie coarse hide salt was used as the source of NaCl for literature formulations, most formulas provided some success in the development, growth and...