Index Catalog // ScholarsArchive@OSU

Characterizing the Spread and Consequences of Mycoplasma ovipneumoniae on Bighorn Sheep (Ovis canadensis) in the Northern Basin and Range Ecosystem

Creator:: Spaan, Robert S.
Abstract:: North American bighorn sheep (Ovis canadensis) have experienced significant declines and population extirpations due to novel pathogens such as Mycoplasma ovipneumoniae. This disease continues to limit the population restoration of bighorn sheep. Therefore, understanding the demographic consequences of pathogen presence and the risk of contact between bighorn populations and potential...
Resource Type:: Dissertation
Full Text:: :321–331. Olson, Z. H., D. G. Whittaker, and O. E. Rhodes. 2012. Evaluation of experimental genetic

Some small sample properties obtained by simulation for a squared error loss estimator for ridge regression with application to an empirical economic model

Creator:: Rahuma, Ali Ahmed
Resource Type:: Dissertation
Full Text:: extend a special thanks to the members of my graduate committee, Dr. Donald Pierce, Dr. Ronald Oliviera

The effect of lasalocid on fall calving beef cows

Creator:: Hopman, Bruce T.
Abstract:: Forty-two fall-calving crossbred cows were equally allotted to six pens of seven cow-calf pairs each. Two treatments (0 and 200 mg lasalocid/head/day) with three replications were used to determine the effects of lasalocid on fall-calving beef cows. The cows were fed grass hay, haylage and pasture ad libitum. The cow-calf...
Resource Type:: Masters Thesis
Full Text:: bridge the gap between myself and the computer. To my committee members, Dr. Donald Holtan, Dr. G

Aspects of the autecology of the plethodontid salamander, Aneides ferreus (Cope)

Creator:: McKenzie, Donald Samuel
Abstract:: Laboratory experiments and simulated field conditions were utilized to gain a better understanding of the ecology of the clouded salamander. Animals collected in western Oregon were utilized for studies in habitat selection, where it was shown that there was a significant pattern of selection of litter types (rock, bark, and...
Resource Type:: Dissertation
Full Text:: . Chilcote, Donald G. Humphrey, June G. Pattullo, and William G. Pearcy, who served on the graduate

Applied nitrogen effects on yellow mustard (Sinapis alba L.) production in the Willamette Valley

Creator:: DuVal, Alyssa Susan
Abstract:: Nitrogen management recommendations for yellow mustard (Sinapis alba L.) production in the high rainfall environment of Oregon's Willamette Valley (WV) are not available. The objectives of this investigation were: (i) to determine the effect of applied nitrogen (N) on seed yield and yield components in yellow mustard, and (ii) to...
Resource Type:: Masters Thesis
Full Text:: : ______________________________________________________ Thomas G. Chastain Nitrogen management recommendations for yellow mustard (Sinapis alba L

The influence of selected environmental factors on diuron toxicity to winter wheat

Creator:: Homesley, Wylie Buress
Abstract:: Previous work has shown that diuron (3-(3, 4- dichlorophenyl)-1, 1-dimethylurea) is less toxic to fall-planted wheat than to wheat planted in the spring. Diuron has been a significant factor in increasing yields of winter wheat grown in Oregon's Willamette Valley. The influence of several selected environmental factors on diuron toxicity...
Resource Type:: Dissertation
Full Text:: . Appleby, Donald. W. Hedrick and Roger G. Peterson, I express thanks for personal interest in correcting

Seed yield and yield components of Pennfine perennial ryegrass (Lolium perenne L.) as influenced by time and rate of spring nitrogen and chemical dwarfing

Creator:: Young, William C. (William Clyde)
Abstract:: Seed yield in perennial ryegrass is the product of yield components that develop during the life of the plant. Crop yield potential is defined by the number of fertile tillers, spikelets per spike, and florets per spikelet. It has been shown that perennial ryegrass realizes only a small percentage of...
Resource Type:: Dissertation
Full Text:: grateful to Drs. Donald B. Zobel and John M. Hart for serving as my graduate committee members. Lastly, I

Formation of N-nitrosamines from the nitrosation of spermidine and spermine

Creator:: Hildrum, K. I. (Kjell Ivar), 1940-
Abstract:: The reactions between sodium nitrite and the polyamines spermidine and spermine were investigated. When reacted at 80°C for 1 hr at pH 3.5 with a 1:3 molar ratio of amine groups to sodium nitrite, five volatile nitrosamines were identified as products in the nitrosation of spermidine. 3HC1, and two volatile...
Resource Type:: Dissertation
Full Text:: graduate commit- tee: Dr. D. D. Bills, Dr. G. Britton, Dr. G. F. Gleicher, and Dr

The Relationship Between IGF-1 and Bone Turnover in a Non-Human Primate Model of Voluntary Alcohol Consumption

Creator:: Sattgast, Lara H.
Abstract:: Alcohol is a widely consumed, nonessential, bioactive nutrient with end-organ effects on the skeleton. Moderate levels of alcohol consumption are generally associated with increased bone mineral density (BMD), whereas higher intake levels result in reduced bone formation, bone loss, and increased risk for osteoporotic fracture. Given the negative impact of...
Resource Type:: Dissertation
Full Text:: cynomolgus macaques. Briefly, monkeys consumed 0.5 g/kg/d, 1.0 g/kg/d, and 1.5 g/kg/d ethanol for three

An evaluation of expressed level of aspiration as a determinant of performance in an undergraduate biology course

Creator:: Pearce, Richard Mott
Abstract:: The purpose of this investigation was to determine if the level of aspiration procedure consisting of knowledge of results plus goal-setting possesses a motivational property as reflected in performance on subject matter criterion instruments above that of knowledge of results alone in an undergraduate biology course. In addition the study...
Resource Type:: Dissertation
Full Text:: . Foster, Keith Goldhammer, Donald G. Humphrey, and Alfred Owczarzak, for their concern and direction. I

ScholarsArchive@OSU

Characterizing the Spread and Consequences of Mycoplasma ovipneumoniae on Bighorn Sheep (Ovis canadensis) in the Northern Basin and Range Ecosystem

Some small sample properties obtained by simulation for a squared error loss estimator for ridge regression with application to an empirical economic model

The effect of lasalocid on fall calving beef cows

Aspects of the autecology of the plethodontid salamander, Aneides ferreus (Cope)

Applied nitrogen effects on yellow mustard (Sinapis alba L.) production in the Willamette Valley

The influence of selected environmental factors on diuron toxicity to winter wheat

Seed yield and yield components of Pennfine perennial ryegrass (Lolium perenne L.) as influenced by time and rate of spring nitrogen and chemical dwarfing

Formation of N-nitrosamines from the nitrosation of spermidine and spermine

The Relationship Between IGF-1 and Bone Turnover in a Non-Human Primate Model of Voluntary Alcohol Consumption

An evaluation of expressed level of aspiration as a determinant of performance in an undergraduate biology course

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