Index Catalog // ScholarsArchive@OSU

Morphine-codeine interactions in rodents

Creator:: Blank, Jerome W.
Abstract:: Rats given morphine-codeine combinations exhibited significantly increased hotplate reaction times compared with rats given an analgesic dose of one agent alone. Genera, species, sex, protein binding and metabolism were studied as possible implicating factors for the increased reaction times. Both male and female rats exhibited increased reaction time, and showed...
Resource Type:: Masters Thesis
Full Text:: onset and duration of the effect. When both analgesic and nonanalgesic doses of one agent were given

The physiological activity of some plant estrogens

Creator:: White, Ronald J.
Resource Type:: Masters Thesis
Full Text:: The physiological activity of some plant estrogens T9E

Some effects of plant estrogens on animals

Creator:: Noteboom, William Duane
Resource Type:: Masters Thesis
Full Text:: roproduotton by teedthg çen1atein to prerant females. The effect of genlateln did not carry over to the young

Certain physiological and pharmacological effects of radiation on rabbits

Creator:: Wagelie, Edwin Gan
Abstract:: Data were taken, following irradiation exposure to 100r and 300r cumulative dose, on 89 rabbits of three breeds that vary greatly in body size. Hematological, intestinal motility, and ear vascularity examinations were performed. Least square estimates have been obtained and an analysis of variance has been conducted in order estimate...
Resource Type:: Dissertation
Full Text:: Certain Physiological and Pharmacological Effects of

Use of radiation resistant organism as a protectant from lethal effects of irradiation in mice

Creator:: Kilbourn, Joan Priscilla Payne
Resource Type:: Dissertation
Full Text:: irradiation protected some of them from a lethal dose of irradiation. The effect of extracts from the

Glycogen utilization in newborn rats subjected to cold stress

Creator:: Van Tassel, Loren Eugene
Abstract:: Newborn rats exhibit a torporous response to cold stress at 2°C from which they revive after several hours exposure even though respiratory, cardiovascular, and muscular movements have ceased. At less severe temperatures (20 to 25°C) the rats respond with a non-torporous decrease in metabolic and physiologic activity and a lowering...
Resource Type:: Masters Thesis
Full Text:: temperature and time 3 Survival of newborn rats following exposure to temperature of 2" - 5" C 4 Effect of

A metabolic function of selenium, assessed with rat liver homogenates

Creator:: Bull, Richard Charles
Abstract:: In three separate trials rats were fed either a basal diet deficient in selenium and vitamin E or the same diet supplemented with one or both of these factors. In addition to these treatments in two of the trials, ethoxyquin was included to provide adequate lipid antioxidant protection and to...
Resource Type:: Dissertation
Full Text:: beneficial effect upon reproduction in the rat. Somewhat later Poley et al. (1941), also conducting a

In vivo and in vitro metabolism of 4-benzo(b)thienyl-N-methylcarbamate and 4-hydroxy benzothiophene by the white rat

Creator:: Miaullis, John Bartley
Abstract:: In vitro studies of Mobam (4-benzo(b)thienyl N-methylcarbamate) metabolism have demonstrated that at least three ether soluble metabolites are formed in a microsomal system fortified with reduced triphosphopyridine nucleotide (NADPH). One of the metabolites was identical to 4HBT (4-hydroxy benzothiophene), the phenol of Mobam. The other two metabolites did not possess...
Resource Type:: Masters Thesis
Full Text:: dependent on their stability in the physiological environment. In addition to ester cleavage, other

Effects of radiation on selection progress in mice

Creator:: Womack, James Ernest
Abstract:: The effects of x-irradiation on quantitative genetic traits was investigated by comparing the response of irradiated mice to selection for litter size and 28-day weight with the response to selection for the same two traits in non-irradiated lines. Irradiated lines were maintained at three levels of x-irradiation, 25 r, 50...
Resource Type:: Dissertation
Full Text:: interaction of genetic and physiological factors was assumed to be responsible for the reduced fertility

In vivo and in vitro metabolism of 4-benzo(b)thienyl-N-methylcarbamate and 4-hydroxy benzothiophene by the white rat

Creator:: Miaullis, John Bartley
Abstract:: In vitro studies of Mobam (4-benzo(b)thienyl N-methylcarbamate) metabolism have demonstrated that at least three ether soluble metabolites are formed in a microsomal system fortified with reduced triphosphopyridine nucleotide (NADPH). One of the metabolites was identical to 4HBT (4-hydroxy benzothiophene), the phenol of Mobam. The other two metabolites did not possess...
Resource Type:: Masters Thesis
Full Text:: dependent on their stability in the physiological environment. In addition to ester cleavage, other

Manganese absorption by barley roots

Creator:: Maas, E. V. (Eugene Vernon), 1936-
Abstract:: An investigation of Mn uptake by five-day-old excised barley roots revealed that a metabolically-mediated process was involved. In short-term experiments, the rate of Mn absorption was comparable to that of the macronutrient cations. Like other metabolically absorbed cations, the Mn absorption rate was a direct function of the ambient concentration...
Resource Type:: Dissertation
Full Text:: studied, Li alone had a pronounced stimulatory effect while Na, K and Rb markedly reduced the absorption

Effects of radiation on selection progress in mice

Creator:: Womack, James Ernest
Abstract:: The effects of x-irradiation on quantitative genetic traits was investigated by comparing the response of irradiated mice to selection for litter size and 28-day weight with the response to selection for the same two traits in non-irradiated lines. Irradiated lines were maintained at three levels of x-irradiation, 25 r, 50...
Resource Type:: Dissertation
Full Text:: interaction of genetic and physiological factors was assumed to be responsible for the reduced fertility

Radiation inhibition of salt-water adaptation in fish

Creator:: Monie, Herbert Joseph
Abstract:: Four species of euryhaline teleosts (chinook salmon, Oncorhynchus tshawytscha, Walbaum; staghorn sculpin, Leptocottus armatus, Girard; starry flounder, Platichthys stellatus, Pallas; shiner perch Cymatogaster aggregata, Gibbons) were exposed to x-rays. The irradiated animals were maintained in either of two different environments. The effects of x-radiation were determined by observing the percent...
Resource Type:: Masters Thesis
Full Text:: . Analytical Techniques 13 III. RESULTS 15 A. Mortalities 15 B. Physiological Changes 15 C

Naphthalene resistance in a house fly strain : its inheritance and characteristics

Creator:: Schafer, James Arnold
Abstract:: A combination of genetical and biochemical methods were utilized in investigating house fly resistance to naphthalene. The inheritance of resistance was determined by crossing a naphthalene resistant strain of Musca domestica L. with a susceptible mutant marker strain. Biochemical comparisons were made on substrains isolated from the progeny of these...
Resource Type:: Masters Thesis
Full Text:: effect suggests that slow absorption (chromosome III) and active detoxication of naphthalene

Influence of dietary selenium on the distribution of tritium-labeled vitamin E in the rate

Creator:: Cheeke, Peter R.
Abstract:: A series of four trials were conducted to determine the influence of selenium supplementation of a selenium- and vitamin E-deficient basal diet on the absorption, excretion, tissue distribution and placental transfer of a single dose of tritium-labeled α-tocopherol in the rat. In the first trial, the effect of supplementation of...
Resource Type:: Dissertation
Full Text:: the rat. In the first trial, the effect of supplementation of the basal diet with 1. 0 ppm selenium

The effect of dimethyl sulfoxide (DMSO) on the radiosensitivity of the rough-skinned newt (Taricha granulosa)

Creator:: Lappenbusch, William L.
Abstract:: More than 2,000 male newts were collected during the summer and maintained unfed at 10°C both pre- and post-irradiation. Exposures ranging up to 30 kR were given with 300 kVp X-rays and ⁶⁰Co gamma rays. Half of the newts were injected (I. P.) with 15 g DMSO/kg (the maximum sublethal...
Resource Type:: Dissertation
Full Text:: The effect of dimethyl sulfoxide (DMSO) on the

Effects of x-irradiation on DNA synthesis in salivary gland cells of Drosophila hydei

Creator:: Wong, Patrick Tin-Choi, 1942-
Abstract:: The effect of X-irradiation on DNA synthesis in larval salivary glands of Drosophila hydei was studied using the technique of liquid scintillation spectrometry and autoradiography. DNA synthesis in salivary glands of synchronized larvae was measured at successive stages of third instar development by in vitro uptake of ³H-thymidine for a...
Resource Type:: Dissertation
Full Text:: Paul A. Roberts The effect of X-irradiation on DNA synthesis in larval salivary glands of Drosophila

Temperature and the bioenergetics of Cichlasoma bimaculatum

Creator:: Sethi, Hari Singh
Abstract:: One means of evaluating the temperature requirements of an animal is to determine changes temperature causes in the uses and losses of energy and materials in the food the animal consumes. To develop energy budgets for cichlids (Cichlasoma bimaculatum) at different temperatures (20, 24, 28, 32 and 36 C) data...
Resource Type:: Dissertation
Full Text:: determines the limits within which the animal is free to perform. Some of the pertinent physiological

The uptake, retention, and distribution of ⁶⁰Co, ⁶⁵Zn, ⁸⁵Sr, and ¹³¹I in the rough-skinned newt (Taricha Granulosa) : A radio-ecological study

Creator:: Valett, Bryan Batson
Abstract:: The uptake, retention, and distribution of ⁶⁰Co, ⁶⁵Zn, ⁸⁵ Sr, and ¹³¹I was examined in the Rough-Skinned Newt (Taricha granulosa). Each of these radionuclides is a possible contaminant of the freshwater environment and, thus, is of importance in radioecology. The newts were maintained singly at 10° C in an unfed...
Resource Type:: Dissertation
Full Text:: form complexes with organic materials. Thus, cobalt is potentially useful in physiological processes

The distribution and transfer of zinc-65 accumulated from food and seawater by three marine crustaceans

Creator:: Fowler, Scott Wellington
Resource Type:: Dissertation
Full Text:: at night from 66 to 82% of the time. The effect of molting on the downward transfer of 65Zn during

Effects of ⁶⁰Co gamma irradiation on the reproductive performance of the brine shrimp, Artemia

Creator:: Holton, Robert L.
Abstract:: The brine shrimp, Artemia, was used as an experimental organism to study the effects of ⁶⁰Co gamma irradiation on the reproductive performance of an animal population. The total reproductive ability of the brine shrimp was fractionated into various components and the effects of irradiation on each of these components was...
Resource Type:: Dissertation
Full Text:: to the control animals. In all cases, doses of 600 rads or less showed little effect on the

Tests to investigate effects of seismic explosions on flatfish and crabs

Creator:: Oregon. Fish Commission
Abstract:: "An investigation to obtain further information on the effects of underwater explosions on flatfish and crabs was conducted offshore in coastal marine waters of Oregon on September 6 and 7, 1962. The study was conducted by the Oregon Fish Commission and financed by several companies presently engaged in oil seismic...
Resource Type:: Technical Report
Full Text:: after a shot opera- tion, likewise, was to see what gross effect this would have on total catch and

Influence of certain chemicals on the sensitivity of rat embryos to X-irradiation

Creator:: Loawhakasetr, Pathom
Abstract:: The effect of 2-aminoethyl-2-thiopseudourea[superscript .]Br[superscript .]HBr (AET), 2-mercaptoethylamine[superscript .]HC1 (MEA) and trisodium calcium chelate of diethylenetriaminepentaacetic acid (CaNa₃DTPA) on the radiosensitivity of rat fetus was investigated. A total of 1256 fetuses were critically examined. Exposure of rats to 200 r whole-body X-irradiation at 9.5 days of gestation resulted in a...
Resource Type:: Dissertation
Full Text:: CERTAIN CHEMICALS ON THE SENSITIVITY OF RAT EMBRYOS TO X-IRRADIATION Abstract approved The effect of

Effects of chronic estrogen treatment on uterine nucleic acids

Creator:: Rinard, Gilbert Allen
Abstract:: The effects of estrogen treatment on uterine weight, uterine nucleic acid content and adrenal weight were studied. Daily doses of 0.05μg or 0.1 μg of Estradiol 17-β were administered subcutaneously to seven day castrated female rats for periods varying from 0 to 168 days. After two days of treatment uterine...
Resource Type:: Masters Thesis
Full Text:: Irnmediate Effect of Changing Dose Chronic Effects DISCUSSION SUMMARY BIBLIOGRAPHY APPENDIX Page I 5

The relationship of 5'-nucleotidase activity in lamb muscle tissue to sub-minimal selenium levels administered to their dams

Creator:: Arnold, Margaret Anna
Abstract:: White muscle disease or muscular dystrophy of sheep is a selenium responsive malady common to many areas with an inherent natural deficiency of selenium in the forage. The disease can be prevented in lambs by adding trace amounts (approximately 0.1 ppm) of selenium to the otherwise selenium deficient, forage fed...
Resource Type:: Masters Thesis
Full Text:: -nucleotidase enhancement, in dysErophic lamb muscle nor the effect, of selenium upon repressing activity

The effect of the copper intake on the flavor and storage life of meat products

Creator:: Idris, Omer Fadle
Abstract:: The susceptibility of milk to copper-induced or accelerated off-flavors is well known. Other animal products, including meats have not been so extensively studied. In this study different species of animals (pigs, calves, lambs and rabbits) were fed on normal rations with and without supplements of copper sulfate. During the course...
Resource Type:: Masters Thesis
Full Text:: - rnents urr:dur:ed a.ny sig:i.ificant effect on rneat; flav,:rs. t/ 1M^3o, lrrofe ,y6r'1 t { T ll i:t

A comparative study of the in vitro localization of mercury from phenylmercuric acetate and mercuric salt in rat kidney and liver subcellular fractions and their effect on alkaline phosphatase

Creator:: Massey, Thomas H.
Abstract:: Studies were undertaken to determine the extent and rate of binding of Hg-203 labeled phenylmercuric acetate and mercuric ace tate in rat kidney and liver slices and their subcellular fractions after 37°C incubation of the slices in Krebs-Ringer -phosphate solutions containing the mercurials at 10⁻⁴ molar. A fast and parallel...
Resource Type:: Masters Thesis
Full Text:: their effect on alkaline phosphatase AN ABSTRACT OF THE THESIS OF Thomas Harding Massey for the M. S

Effects of chronic coumestrol administration on female rats

Creator:: Chan, Elaine Chi-ling
Abstract:: The effects of coumestrol on the uterine weight, uterine fluid imbibition, uterine nucleic acid content, adrenal weight and body weight of female rats were studied. Daily doses of 20 micrograms of coumestrol per 0.1cc propylene glycol were administered subcutaneously to spayed rats following a seven day recovery period, for durations...
Resource Type:: Masters Thesis
Full Text:: knowledge of the physiological characteristics of coumes- trol as a phytoestrogen is fragmentary, White

Effect of x-irradiation upon glucose catabolism in the intact rat

Creator:: Marks, Darrell Lee
Abstract:: Beginning with the discovery of x-rays by Wilhelm Konrad Roentgen in 1895, man has had the capacity to greatly increase radiation levels of his environment, especially with the advent of nuclear weapons in recent years. Radioisotopes are finding progressively wider use in medicine, research, power production, etc., with increased hazards...
Resource Type:: Dissertation
Full Text:: . in Radiation Biology (Name) (Degree) (Major) Date thesis is presented fi'jAy 17 ,/9(?6 Title EFFECT

Estrogen regulation of pituitary function in the gonadectomized sheep

Creator:: Cooper, Gordon Jay
Abstract:: A total of five individual experiments were conducted with gonadectomized, male sheep to study the influence of estrogen on the plasma level of pituitary activities, with the greatest emphasis given to gonadotropic activity. Estrogen treatments employed were as follows: 1. 12 mg. diethylstilbestrol (DES) implanted subcutaneously. 2. 1 mg. DES...
Resource Type:: Masters Thesis
Full Text:: Pituitary Size 3 Pituitary Cytology 4 Pituitary Hormone Content 5 Effect of Gonadectomy 5 Effect of

Dosimetry considerations in the irradiation of biological populations

Creator:: Denovan, James Thomas
Abstract:: The effects of changes in dosimetry conditions on the radiation sensitivity of a constant biological population were determined. The organism used for this study was the strain B of Escherichia coli. The percentage survivals of these cells in an aqueous solution were determined at the same total exposure with different...
Resource Type:: Masters Thesis
Full Text:: FIGURES Figure 1. Typical bacterial growth curve Page 5 2. The effect of the inverse square law

The effects of ultraviolet irradiation on the photosynthetic apparatus

Creator:: Mantai, Kenneth Edward
Abstract:: The effects of ultraviolet (UV) irradiation on photosynthesis and various partial reactions involving the individual photoreactions of photosynthesis were examined. These reactions included photo-reduction in adapted green algae, Hill reaction, cyclic photophosphorylation, the 520 nm absorbance change and variable-yield fluorescence. The reactions were measured in spinach chloroplasts and isolated chloroplasts...
Resource Type:: Dissertation
Full Text:: totally the system I portion of the absorbance change had no effect on the ability of chloroplasts iso

Temperature-salinity effects on net protein synthesis and viability of Vibrio marinus mp-1, an obligately psychrophilic marine bacterium

Creator:: Cooper, Mary Faith
Abstract:: The relationship of temperature and salinity to protein synthesis was determined for cells of Vibrio marinus, MP-1. Protein synthesis was measured by the incorporation of radioactive proline into hot trichloroacetic acid precipitable material. At all salinities protein synthesis occurred at 15°C and 20°C but not at 25°C. The critical temperature...
Resource Type:: Masters Thesis
Full Text:: stationary phase cells. This suggests physiological processes active during rapid cell growth as possible

Behavior of certain radionuclides in a marine benthic amphipod

Creator:: Cross, Ford A.
Resource Type:: Dissertation
Full Text:: accumulation and elimination rates were temperature dependent although the effect appeared minimal within the

Some effects of thyroxine and pentachlorophenol on the bioenergetics of cichlid fish

Creator:: Pasley, James Neville
Resource Type:: Dissertation

Gonadotropins in pituitaries of inbred and linecross beef bulls and effects of irradiation of mammalian pituitary glands on their ability to induce in vitro ovulation of frog ovaries

Creator:: North, Warren Arthur
Abstract:: There were two studies involved in the thesis research. In the first study, variation in the amount of adenohypophysis gonadotropins among 22 individual beef bulls were investigated. These bulls represented four inbred lines, and six linecrosses. The bulls were raised in the Oregon State University purebred herd. The bulls were...
Resource Type:: Dissertation
Full Text:: with the 2000 r. level had a depressing effect on ovulation rate. When comparing all rates of ir

Cholinesterase activity and sodium transport in the frog skin

Creator:: Wyse, Beatrice Milas
Abstract:: By salt depleting the animals or by injecting them with aldosterone, I was able to increase the active transport of sodium across the isolated skin. The potential difference was increased by 37% and 43% respectively and the net sodium flux by 69% and 62%. Exposure of frogs to 50 mM...
Resource Type:: Masters Thesis
Full Text:: by Professor R. Alvarado. TABLE OF CONTENTS INTRODUCTION METHODS RESULTS Effect of the

Nutritional interrelationship of cobalt and selenium in lambs and weanling rats

Creator:: Wise, William Robert, Jr.
Abstract:: The purpose of this thesis is to determine if dietary and metabolic relationships exist between cobalt and selenium. Two groups of lambs were compared. The dams of one group of lambs received an alfalfa hay adequate in selenium and the dams of the other group received an alfalfa hay deficient...
Resource Type:: Masters Thesis
Full Text:: - jected with selenium -75 (as selenite) and cobalt -60 (as cobaltous chloride) and the effect of dietary

Effects of near-ultraviolet radiation on changes in the biochemical composition of Verticillium albo-atrum

Creator:: Madarash, George Russell
Abstract:: This study sought a better understanding of the mechanism of the near-ultraviolet inhibition of microsclerotia and pigment formation in the fungus Verticillium albo-atrum Reinke & Berth. by observing changes which occur in certain major biochemical components: lipids, chitin, RNA, DNA, protein carbohydrates, and pigment. The most important finding was that...
Resource Type:: Masters Thesis
Full Text:: reagent. 3 Effect of UV radiation on lipid content of Verticillium albo-atrum. 4 The relative pigment

Cellular dynamics of the intestinal epithelium of coho salmon, Oncorhynchus kisutch, as influenced by temperature and x-rays

Creator:: Johnson, Tod Schaefer
Abstract:: The cellular dynamics of the intestinal epithelium in the coho salmon, Oncorhynchus kisutch, has been studied to determine the effects of temperature and whole-body X-irradiation. In vivo experiments utilizing colchicine mitotic inhibiting technique and tritiated thymidine (³H-TdR) radioautography were employed in order to evaluate the kinetics of the cell population....
Resource Type:: Dissertation
Full Text:: physiological pattern of temperature acclimation in fishes has been defined by Precht (1958) and Prosser (1958

Effects of underwater explosions on Dungeness crabs (Cancer magister) off the Alsea River, Sept. 7, 1962

Creator:: Oregon. Fish Commission
Abstract:: In the summer of 1961, oil and gas companies began seismic explorations offshore on the Oregon coast. These explorations inspired interest in the effects of explosions on marine life. This document gives the results of two series of tests on the effects of underwater explosions on Dungeness crabs held in...
Resource Type:: Technical Report
Full Text:: : Preliminary I ults of Tests on the Effect of Undorwator Explosions on Dungonoss Crabs. Test I) Series [ii 8

Evidence for the nonessentiality of ascorbic acid in the diet of the rainbow trout, Salmo gairdneri

Creator:: Primbs, Edward R. J.
Abstract:: Numerous tests were applied to rainbow trout of eleven months of age to determine whether ascorbic acid is an essential element of the diet of these fish. Although previous work had been done on this question, conflicts in the results, the large reliance upon abnormal symptoms such as lordosis and...
Resource Type:: Masters Thesis

Responses of instrumentally conditioned starlings to aversive acoustic stimuli

Creator:: Langowski, David Jerome
Resource Type:: Masters Thesis

Nitrates in cattle feeding

Creator:: Oregon State University. Extension Service, Ewalt, H. P., Peterson, K. J., and Adams, Frank William
Abstract:: Published July 1966. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
Resource Type:: Technical Report
Full Text:: little difference in the nitrate uptake of plants. The type of soil has some effect. Heavy wet soils may

Nitrates in cattle feeding

Creator:: Adams, H. P. (Holyoke Purinton), 1922-, Peterson, K. J., Adams, Frank William, and Oregon State University. Extension Service
Abstract:: Published October 1966. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
Resource Type:: Technical Report
Full Text:: methemoglobin. Methemoglobin is a poor transporter of oxygen to the body tissues. The effect of nitrate (nitrite

The effects of temperature and salinity on the early development of Adula californiensis (Pelecypoda-Mytilidae)

Creator:: Lough, Robert Gregory
Abstract:: Adula californiensis, which inhabits mudstone along the open coast and in Yaquina Bay, Oregon, is subjected to extremely varying conditions. Laboratory experiments of a factorial design were used to investigate the effects of temperature and salinity on survival, growth and respiration during early development. The rate of development to the...
Resource Type:: Masters Thesis

The site of action of radio-lethal compounds on Micrococcus radiodurans

Creator:: Manes, Jasper Damon, Jr.
Abstract:: Iodoacetic acid and diphenylamine were used in this study to elucidate the mechanisms of resistance of Micrococcus radiodurans to radiation. This organism, a gram positive, non-spore forming, salmon-pink, tetracoccus has a LD₅₀ of 213,000 R when grown in the absence of radio-modifying agents. M. radiodurans, when grown in media containing...
Resource Type:: Masters Thesis
Full Text:: LD50 for X -rays to 134,000 R. The effect of diphenylamine and iodoacetic acid upon the colored

A comparison of radiation induced lipid changes in Micrococcus radiodurans, Sarcina lutea, and Pseudomonas aeruginosa

Creator:: Ley, Ronald Douglas
Abstract:: Quantity variations in pigments and lipid classes were determined following γ-irradiation of Micrococcus radiodurans, Sarcina lutea, and Pseudomonas aeruginosa. Pigmentation was determined by extraction with organic solvents and measured as optical density at 475 mμ for M. radiodurans and S. lutea, and 410 mμ for Ps. E aetuginosa. Pigments of...
Resource Type:: Masters Thesis
Full Text:: REVIEW 1 3 Previous Investigation on the Lipids of M. radiodurans 3 The Effect of Ionizing

Influence of isolated alfalfa coumestrol on growth of lambs

Creator:: Bahn, Alan Volker
Abstract:: The objective of the thesis was to determine the effects of isolated coumestrol on the growth, carcass characteristics and certain organs of wether lambs. The first of two trials was conducted over an eight week period with two groups of heavy wether lambs. Trial two was conducted over an 11...
Resource Type:: Masters Thesis
Full Text:: , carcass and organoleptic differ- ences significant. Marked evidence of an eslrogenic effect was apparent

Effect of light quality and periodicity upon germination of Douglas-fir seed (Pseudotsuga menziesii (Mirb.) Franco) and on growth of Douglas-fir seedlings

Creator:: Johnson, Le Roy Curtis
Abstract:: A study on the effects of light quality and periodicity on the germination of Douglas-fir seed and the growth of Douglas-fir seedlings was conducted. Interest was focused on responses that could be measured and observed without biochemical assay. It was found that .Douglas-fir seed,s would respond to red-light treatments by...
Resource Type:: Masters Thesis
Full Text:: stimulating effect of red light could be reversed with far-red light. The phytochrome enzyme sys- tem is

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