Index Catalog // ScholarsArchive@OSU

Histologic effects of chronic selenium deficiency in selected tissues of laboratory rats

Creator:: Sprinker, Lucas Harry
Abstract:: The selenium-responsive syndromes and the discovery of Factor 3-selenium focused attention on selenium in metabolism. Two hypotheses have been advanced to explain the metabolic effect of selenium: 1) substitution or sparing of alpha tocopherol, and 2) a primary role in metabolism. The first hypothesis is supported by Scott and Desai,...
Resource Type:: Masters Thesis
Full Text:: metabolic effect of selenium: 1) substitution or sparing of alpha tocopherol, and 2) a primary role in

The effect of selenium on chemical carcinogenicity in the rat

Creator:: Johnston, Weldon Kearney
Abstract:: One hundred and fifty-one weanling rats of both sexes were fed control diets or diets containing 160 ppm diethylnitrosamine (DEN) or 150 ppm N-2-fluorenyl-acetamide (FAA). The carcinogen level was calculated so that the LD₅₀ should be achieved at about 17 weeks. Each carcinogen treatment was incorporated with three different diet...
Resource Type:: Masters Thesis
Full Text:: The Effect of Selenium on Chemical Carcinogenicity in the

A study of the relationship of the use of various drugs to the visual-motor performance of college students

Creator:: Antone, Eugene Joseph, Jr.
Abstract:: The purpose of the study was to compare the visual-motor performance of college students who reported ingestion of certain drugs with those college students who reported no drug ingestion. The study drugs included the following drugs or groups of drugs: tobacco, alcohol, marijuana, LSD, mescaline, barbiturates, and amphetamines. A total...
Resource Type:: Dissertation
Full Text:: or psychoneuroses. Chronic Toxic Reactions: An adverse psychological or physiological reaction to

Pulmonary function of male cigarette smokers compared with lifetime noncigarette smokers

Creator:: Barr, Robert Douglas
Abstract:: The pulmonary function scores of 250 male cigarette smokers were compared with 406 lifetime nonsmokers. A Stead-Wells spirometer was used to obtain forced vital capacity, forced expiratory flow, forced mid-expiratory flow, and forced expiratory volume. All individuals included in the sample were between. the ages of 20 and 49 years....
Resource Type:: Dissertation
Full Text:: American Physiological Society for lung volumes and for various phases of pulmonary research. Pulmonary

The visual response of the purple shore crab, Hemigrapsus nudus, to ionizing and non-ionizing radiation

Creator:: Jordan, Neil Michael
Abstract:: Bioelectric responses from the isolated eye of the purple shore crab were measured by the electroretinogram with stimulation by light from wavelengths of 250 to 800 nm, strontium-yttrium-90 beta radiation, 17.5 keV x-radiation, and 3-cm microwaves. Peak sensitivities to light stimulation were found at 350 and 500 nm. These peaks...
Resource Type:: Masters Thesis
Full Text:: even when the eye was excised. A temperature effect was also noted by this author, in which an

Histogenesis of fetal rat lung and liver after x-irradiation in organ culture and in utero

Creator:: Vogt, Judith C.
Resource Type:: Dissertation
Full Text:: Radiation Studies on Lung Cultures 36 Properties of Connective Tissue 38 Properties of Collagen 41 Effect of

Effects of dieldrin on the intrinsic rate of increase of the guppy, Poecilia reticulata Peters

Creator:: Roelofs, Terry Dean
Resource Type:: Dissertation
Full Text:: increase becomes more of a physiological parameter, the value of which is de- pendent upon existing

The influence of calcium carbonate and clacium gluconate on tetracycline absorption in man

Creator:: Owings, Gary Lee
Abstract:: This experiment was designed to investigate the in vivo effects of calcium ions on tetracycline absorption when oral doses of tetracycline and calcium-containing medications were administered concurrently. Twenty-one human volunteers were selected and divided into three equal-sized groups: Group A, Group B, and Group C. Each volunteer in Group A...
Resource Type:: Masters Thesis
Full Text:: depressant effect of calcium carbonate on tetracy- cline absorption was significantly greater than the

Absorption of benzocaine -³H from semi-solid dosage forms following rectal administration in rats

Creator:: Lorskulsint, Duangchit
Abstract:: The effect of concentration, vehicle and surfactant on the absorption of benzocaine -³H across the rat's rectal mucosa was investigated. Blood radioactivity levels were determined after the application of benzociane -³H containing suppositories and ointments. A wet oxidation method was used for sample digestion. Since the radioactivity counted is the...
Resource Type:: Masters Thesis
Full Text:: Agents Effect on Absorption 14 Effect of Physiological Changes on Absorption 17 Absorption of Topical

Calcium regulation and physiological function in animals exposed to lead

Creator:: Hoffman, Norbert Edward
Abstract:: Tissue distribution studies of calcium and lead in brain tissue of rats were increased subsequent to a single intravenous injection of lead, 10 mg/kg, in the form of lead acetate. Time-course studies demonstrated that brain concentrations of calcium and lead (in terms of wet tissue weight) were found to be...
Resource Type:: Dissertation
Full Text:: Calcium regulation and physiological function in animals

Effect of cadmium on ceruloplasmin levels in the rat

Creator:: Robinson, Alfred Vern
Abstract:: Injection of a 2.0 mg Cd ²⁺ /kg B.W. (I.P. as CdC1 ₂ in .05 M NaAc, pH = 6.9-7.2, .15 M or p = .15 with NaCl) resulted in a decrease in ceruloplasmin (EC 1.12.3) p-phenylenediamine oxidase activity within one hour of injection. Maximal decrease (40%) occurred within six...
Resource Type:: Masters Thesis
Full Text:: Science presented on natMi /4 /92,2 (Major Department) (Date) Title: EFFECT OF CADMIUM ON CERULOPLASMIN

A comparison of a smoking and nonsmoking population using the forced expiratory flow in the seventy-five to eighty-five percent segment of the spirometric curve

Creator:: Breese, John David
Abstract:: Forced vital capacity lung expiration examinations of nonsmoking and cigarette-smoking male sample populations were compared to determine if the 75 to 85 percent segment was a more sensitive test of early lung dysfunction. The nonsmoking population was composed of 240 men who were tested for values of forced vital capacity...
Resource Type:: Masters Thesis
Full Text:: and pulmonary dimensions. II FEF75_85% analysis of variance testing effect of smoking, age and height

The effect of selenium deficiency on the fatty acid metabolism of rats and lambs

Creator:: Fischer, William Carl
Abstract:: Selenium deficiency in rats results in increased carbon metabolism, approaching twice the rate of selenium supplemented animals (normal). This is also reflected in a 50 percent increase in lysosomal enzyme activity in tissues of selenium deficient animals. Isolation of rat liver lysosomes shows a 17 percent increase in membrane thickness...
Resource Type:: Dissertation
Full Text:: , 1974 (Major Department) Title: THE EFFECT OF SELENIUM DEFICIENCY ON THE FATTY ACID METABOLISM OF RATS

Behavioral and electrophysiological evidence for the mechanisms involved in the detection of ionizing radiations by the crayfish Pacifastacus trowbridgii

Creator:: Rodriguez, Adrian
Abstract:: The light-adapted crayfish, Pacifastacus trowbridgii (Stimpson, 1957), displayed a behavioral response to exposure to 300 kV x-rays at exposure rates of 10 to 30 R/s. Within this range, the proportion of subjects that responded increased with an increase in exposure rate. The response latency was inversely proportional to the exposure...
Resource Type:: Dissertation
Full Text:: - physiological tests. The presence of chemoreceptors was indicated by responses elicited after administration of

Selenium effects and species differences in hepatic metabolism of pyrrolizidine alkaloids and other xenobiotics

Creator:: Shull, Lee R.
Abstract:: The metabolism of pyrrolizidine alkaloids and other drugs was studied with regard to nutritional status and species differences. Pyrrolizidine alkaloids which are biotransformed to severely toxic metabolites were isolated from tansy ragwort (Senecio jacobaea). Semi-purified alkaloid crystals containing five alkaloids (senecionine, seneciophylline, jacobine, jacoline, and jacozine) were prepared and found...
Resource Type:: Dissertation
Full Text:: liver weight, but had no effect on microsomal oxidases. Similarly, high copper had no effect on the

Some aspects of the mechanism of estrogen action in the uterus of the ewe

Creator:: Koligian, Karl Bruce
Abstract:: The binding of estrogen to endometrium and uterine arteries of the ewe was investigated by use of a [³H]estradiol exchange assay and by incubating whole tissue aliquants with [³ H]estradiol, a method which permits quantification of bound estrogen translocated from the cytoplasm to the nucleus. Five ewes were necropsied on...
Resource Type:: Dissertation
Full Text:: arteries on day 10 only. The effect of estrogen and progesterone on concentra- tions of estrogen

The uptake and retention of cesium-134 in Microtus canicaudus Miller

Creator:: Lei, Wayne
Abstract:: A study was performed to assess the uptake and retention patterns of cesium-134 in the gray-tailed vole, Microtus canicaudus Miller. To furnish a realistic source of contaminated food for the voles, wheat seedlings were raised in hydroponic solutions to provide radiocesium labeled wheat clippings. The hydroponic system was designed to...
Resource Type:: Masters Thesis
Full Text:: relatively high energies of emitted radiation (Davis, 1963). In addition, cesium is a physiological analog

Some possible roles for selenium in the reproductive physiology of the male graytailed vole (Microtus canicaudus)

Creator:: Whitfield, Stephen Curtiss
Abstract:: The testes of the gray-tailed vole (Microtus canicaudus Miller) exhibited a high affinity for selenium relative to other selected tissues. Uptake of selenium-75 in the testis-epididymis complex was delayed relative to uptake by the whole body, kidney, and liver. This pattern of uptake suggested that selenium was metabolically incorporated into...
Resource Type:: Masters Thesis
Full Text:: E in the diet, the addition of selenium produced no significant changes in measured physiological

Effects of fractionated radiation doses on survival times of the newt (Taricha granulosa)

Creator:: Campbell, Carol Lee
Abstract:: This was a study designed to determine the occurrence of recovery from radiation damage in Taricha granulosa. Irradiation with either gamma or x-ray sources in the range of 96-10,000 rads was given. (The mean or median survival times were determined.) Doses were fractionated and the survival times for the same...
Resource Type:: Masters Thesis
Full Text:: greatest importance. If the fractionation interval was too short, a merely additive effect of the

Exposure to ultraviolet-B radiation : sensitivity evaluation of an important ecological parameter of the marine copepod Acartia clausi

Creator:: Karanas, James J.
Abstract:: The ozone present in the atmosphere filters incident solar ultraviolet (UV) radiation such that only the longer wavelengths of the total UV spectrum emitted by the sun reach the earth's surface. Atmospheric increases in nitrogen oxides and chlorofluoromethanes represent a threat to the existence of this protective screen. As the...
Resource Type:: Masters Thesis
Full Text:: hatching of A. clausi eggs. 31 11 The effect of temperature on development time of A. clausi eggs for two

Diurnal variations of body temperature and reaction time accompanying early morning and evening aerobic routines

Creator:: Smith, Ella Jean
Abstract:: The primary purpose of this study was to determine the effects of early morning and evening bouts of aerobic exercise upon the diurnal pattern of reaction time and body temperature. An effort was made to classify subjects according to the rhythmic trends identified with 'morning' and 'evening' type persons. Eight...
Resource Type:: Masters Thesis
Full Text:: to detect physiological and psychological orientation to the two extremes of day. Treatments

The distribution and role of "available" iron in two estuaries

Creator:: Holden, Robert Bennett
Abstract:: A detailed study of iron concentrations measured by the reducible, reactive ferrous, and extractable methods was conducted in Auke Bay, Alaska during June 1973 and in Hood Canal, Washington during October 1973 and April 1974. The concentrations by each method were generally highest at the bottom and decreased towards the...
Resource Type:: Masters Thesis
Full Text:: chlorophyll a at 1100 April 4, 1974 at station 33A in Hood Canal. 58 23. The effect of water storage on the

Effects of polychlorinated biphenyls (PCBs) on the respiration of the speckled sanddab (Citharichthys stigmaeus)

Creator:: Haines, Virginia Ewald
Abstract:: Specimens of Citharichthys stigmaeus, the speckled sanddab, were taken from Yaquina Bay, Newport, Oregon and exposed for eight days to dissolved measured concentrations ranging from 2.9 μg/l to 190 μg/1 of the polychlorinated biphenyl, Aroclor® 1260. Oxygen consumption was measured to determine any change from routine levels of respiration. This...
Resource Type:: Masters Thesis

Growth response of a marine phytoplankton Coccolithus huxleyi to various chemical forms of cobalt

Creator:: Longaker, Harold L.
Abstract:: The results of a preliminary experiment suggested that a complexed form of cobalt was more efficacious in promoting growth of a marine phytoplankton than ionic cobalt. The phytoplankton used in this experiment was Coccolithus huxleyi, a vitamin B₁₂ producer, and the cobalt complex was cobalt (II)- ethylenediaminetetracetic acid [Co(II)- EDTA]....
Resource Type:: Masters Thesis
Full Text:: (from Pratt, 1972). 9 2 Molecular structure of deoxyadenosyl (from Pratt, 1972). 9 3 Effect of the

Plasma cholesterol levels, atherosclerosis and liver damage in rabbits fed cyclopropenoid fatty acids

Creator:: Ferguson, Thomas Lyle
Abstract:: In this five-week feeding study male New Zealand rabbits were fed diets containing cyclopropene fatty acids (CPFA), diets containing cholesterol, and diets with both CPFA and cholesterol added to test the effect of CPFA on cholesterol metabolism and atherosclerosis induction. When CPFA-fed animals were compared with control animals, they tended...
Resource Type:: Masters Thesis
Full Text:: they do in rainbow trout. One interesting physiological effect of CPFA feeding has been largely

The dynamics of ⁶⁵Zn in benthic fishes and their prey off Oregon

Creator:: Vanderploeg, Henry Alfred
Resource Type:: Dissertation
Full Text:: , is used to predict the effect of temperature on A in equation (12) (Winberg, 1956). The function

Bioenergetics and survival of chum (Oncorhynchus keta) and pink (O. gorbuscha) salmon in heated seawater

Creator:: Kepshire, Bernard Michael
Abstract:: The use of heated seawater for enhancing the culture of Pacific salmon was investigated. Food consumption rate, gross food conversion efficiency, growth rate, and survival of chum (Oncorhynchus keta) and pink (O. gorbuscha} salmon fed to satiation were determined in relation to water temperature and body weight. Both species of...
Resource Type:: Dissertation

Some effects of life stage, temperature, pH and alkalinity on the acute toxicity of inorganic chloramines to young Coho salmon (Oncorhynchus kisutch)

Creator:: Lamperti, Larry Phillip
Abstract:: Acute toxicity bioassays (96-hr TL₅₀) were employed to determine the tolerance of coho salmon (Oncorhynchus kisutch) to inorganic chloramines at the alevin (yolk sac fry), yolk absorption, and early juvenile life stages. Any influence of changes in temperature, pH, and total alkalinity on the tolerance of juvenile coho for chloramines...
Resource Type:: Masters Thesis

Temperature requirements of salmonids in relation to their feeding, bioenergetics, growth, and behavior

Creator:: Hughes, Robert M., Davis, Gerald E., Warren, Charles E., 1926-, and United States. Office of Water Research and Technology
Resource Type:: Technical Report
Full Text:: growth o f juvenile salmonids in aquaria to obtain information on direct effect s of temperature that

Reactions of the sea anemone, Anthopleura xanthogrammica, to electromagnetic radiations in the visible, ultraviolet, and X-ray ranges

Creator:: Clark, Ervil Delwyn
Abstract:: The behavioral repertoire of the sea anemone, Anthopleura xanthogrammica, was investigated to test for the occurrence of any immediate response to various regions of the electromagnetic spectrum. Monochromatic radiations in the visible and ultraviolet spectral regions were produced by a 150-watt xenon lamp or a ZOO watt mercury vapor lamp...
Resource Type:: Dissertation
Full Text:: (see for example, Millott, 1957 and 1968) little or no attention has been given to the effect of

A study of selected behavioral and electro-physiological responses of carpenter ants (Campanotus) to ionizing radiations

Creator:: Martinsen, David Linnebach, 1940-
Resource Type:: Dissertation
Full Text:: A study of selected behavioral and electro-physiological

Effects of methylmercury exposure on sea water adaptation of juvenile salmonids

Creator:: McPherson, Barry P.
Resource Type:: Masters Thesis

Ecological studies in radioactivity in the Columbia River Estuary and adjacent Pacific Ocean : progress report 1 July 1972 through 31 March 1974

Creator:: Cutshall, N. H., Carey, Andrew G., Holton, Robert L., Pearcy, William G., Renfro, William C., and McMechan, Karla J.
Abstract:: This report presents progress accomplished during the 20-month period from 1 July 1972 through 31 March 1974 as part of the program "Ecological Studies of Radioactivity in the Columbia River Estuary and Adjacent Pacific Ocean". This program is a continuing study supported by the Division of Biomedical and Environmental Research...
Resource Type:: Technical Report
Full Text:: --Jennings and Osterberg . . . . . . . . . . . . . . 60 Effect of Gamma Irradiation on the Reproductive

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