Index Catalog // ScholarsArchive@OSU

The effect of erythorbic acid on the determination of ascorbic acid levels in selected foods by high performance liquid chromatography and spectrophotometry

Creator:: Tuan, Shenhsiu
Abstract:: A high performance liquid chromatography (HPLC) procedure using a LiChrosorb-NH₂ column and a eluant buffer of 75:25 (v/v) of acetonitrile:0.05 M KH₂P0₄, pH 5.95, was developed for the successful separation and determination of ascorbic and erythorbic acids in selected food samples. Application of the method, which is sensitive, rapid and...
Resource Type:: Masters Thesis
Full Text:: , natural and artificial flavor drink mixes, and Hi-C drinks gave satisfactory results. Dehydroascorbic

The 2-μm Plasmid of Saccharomyces cerevisiae; Partial Characterization of a Eukaryotic Minichromosome

Creator:: Zsebo, Krisztina Maria
Resource Type:: Masters Thesis
Full Text:: approved: Redacted for privacy Dr. Ken Van Hold& I have shown that commonly used procedures for isolat

Foodgrain policy in the Republic of Korea : the economic costs of self-sufficiency

Creator:: MacDonald, John A.
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF John MacDonald for the degree of

Plant colonization of gopher mounds in adjacent pasture and prairie communities

Creator:: Macdonald, Catherine A.
Abstract:: I used field experiments to study how plants in two grassland communities colonized soil mounds made by the Camas pocket gopher, Thomomys bulbivorus (Richardson). I identified potential mound colonizers in each source of colonization (buried propagule bank, seed rain, and established vegetation) and then measured species specific rates of colonization...
Resource Type:: Masters Thesis
Full Text:: and prairie communities AN ABSTRACT OF THE THESIS OF Catherine Macdonald for the degree of Master

Transmission efficiency and life table parameters of western flower thrips, Frankliniella occidentalis (Pergande) exposed to tomato spotted wilt virus-impatiens serotype

Creator:: Sether, Diane M.
Abstract:: Peppermint, Mentha piperita 'Black Mitcham' was established as a host for tomato spotted wilt virus-impatiens serotype (TSWV-I). TSWV-I infection of peppermint, initially observed in a research greenhouse (Corvallis, OR), included stunting and downward curling of leaves accompanied by bronzing, and occasionally tip necrosis. Young leaves appeared either symptomless, deformed, or...
Resource Type:: Masters Thesis
Full Text:: produced and only under cool temperatures (15°C). ELISA detection of virus distribution throughout the

An application of item response theory to the test of gross motor development

Creator:: Cole, Emily Lynne
Abstract:: The purposes of this study were to (a) provide insight into the use of item response theory (IRT) with psychomotor skills, (b) assess the psychometric properties of the Test of Gross Motor Development (TGMD) using IRT, and (c) provide a basis for future studies of the TGMD using IRT. The...
Resource Type:: Masters Thesis
Full Text:: ) assess the psychometric properties of the Test of Gross Motor Development (TGMD) using IRT, and (c

Population and community ecology of the red alga Rhodomela larix (Turner) C. Agardh, on the central Oregon coast

Creator:: D'Antonio, Carla Marie, 1956-
Abstract:: Aspects of the life history and ecology of the intertidal turf-forming alga Rhodomela larix (Turner) C. Agardh were examined over a two year period at several sites on the Oregon coast. Rhodomela occurred over a broad tidal range and exhibited different growth and morphology characteristics with respect to tidal height....
Resource Type:: Masters Thesis
Full Text:: larix (Turner) C. Agardh, on the central Oregon coast AN ABSTRACT OF THE THESIS OF Carla M. D'Antonio

Effect of nutrition on reproductive performance of young female mink

Creator:: Polonen, Ilpo Juhani
Abstract:: Two distinct experiments were conducted. Experiment 1 was conducted to investigate the effects of nutritional conditioning and flushing as a means of improving reproductive performance of female mink. In Exp. 2, vegetable oil and corn syrup were fed during lactation to ascertain whether this nutritional regimen would improve growth of...
Resource Type:: Masters Thesis
Full Text:: showing intrest in my research project. I gratefully acknowledge Dr. Ken Rowe of the Department of

Effect of wheat cultivar mixtures on populations of Puccinia striiformis races

Creator:: DiLeone, Julie A.
Abstract:: This study quantified the frequency of simple versus complex races of Puccinia striiformis Westend. in mixtures of wheat cultivars possessing different race-specific resistance genes. A simple race of a pathogen can infect only one component, and a complex race of the pathogen can infect two or more components of an...
Resource Type:: Masters Thesis
Full Text:: : Christopher C. Mundt This study quantified the frequency of simple versus complex races of Puccinia

Grazer-periphyton interactions in laboratory streams

Creator:: Sumner, William T.
Resource Type:: Masters Thesis
Full Text:: Abstract approved: Redacted for Privacy C. David McIntire The effects of grazing, light intensity, and

Three-dimensional gravity analysis of the Pacific-Antarctic east Pacific rise at 36.5°S, 49.8°S and 54.2°S

Creator:: Enriquez, Kelly D.
Abstract:: Three-dimensional gravity analysis is the process of removing the predictable components from the free-air gravity anomalies and has proven to be useful for interpreting the subsurface structures and active processes at mid-ocean ridges. The three-dimensional effects of the seafloor and Moho topography, assuming a constant crustal thickness and constant crust...
Resource Type:: Masters Thesis
Full Text:: . Ken Beals, Ronald Guenther, and Anne Trehu, for their helpful comments and suggestions regarding my

[8-¹⁴C]zeatin metabolism in Phaseolus embryos

Creator:: Lee, Yun-hwa
Resource Type:: Masters Thesis
Full Text:: Master of Science in Horticulture presented on October 12, 1984 Title: [8-^C] Zeatin

Aerobic cometabolism of chlorinated aliphatic hydrocarbons by subsurface microbes grown on methane, propane and butane from the McCellan Air Force Base

Creator:: Tovanabootr, Adisorn
Resource Type:: Masters Thesis
Full Text:: never been achieved. I notably appreciate the assistance of my committee members, Dr. Ken Williamson

Composition of pectic substances in Selva strawberry (Fragaria x ananassa Duch.)

Creator:: Lin, Ben-lin
Abstract:: Pectic substances in the cell wall have long thought to be responsible for the textural changes in fruit during ripening and senescence. Compositional variation within the pectic macromolecules could affect the external characteristics of the fruit. Strawberries undergo adverse quality changes such as softening and juice loss after freezing and...
Resource Type:: Masters Thesis
Full Text:: MacDonald, Michael Hudson, and William Denison for their academic input. Thanks to the following persons

The inheritance of spermatozoan midpiece length and its relationship with traits of economic importance in cattle

Creator:: Lukefahr, Steven D.
Resource Type:: Masters Thesis
Full Text:: the trip involving semen collection of beef bulls. I wish to thank committee members, Drs. Ken Rowe

Ecological study of aquatic myxobacteria in a woodland stream

Creator:: Carlson, René Virginia
Abstract:: Most studies of bacteria in water have concerned public health; little attention has been given to organisms which are indigenous to the aquatic environment. Myxobacteria are known to occur in soil, in the marine environment, and several have been studied in relation to diseases of salmonid fishes. However, little information...
Resource Type:: Masters Thesis
Full Text:: , Dr. D. L. MacDonald and Dr. Herbert C. Curl, for their suggestions and critical review of this work

Response of wood-boring beetles (Coleoptera: Buprestidae, Cerambycidae) to prescribed understory burning in mixed-conifer stands of southwestern Oregon

Creator:: Duane, Maureen V.
Abstract:: Prescribed burning is increasingly being used as a management tool to reduce potential fuels on the forest floor and promote stand vigor through removal of dense, crowded vegetation. Because fire affects both the standing vegetation and the amount of downed wood in the ecosystem, it is imperative to examine how...
Resource Type:: Masters Thesis
Full Text:: J. Boone Kauffman for his advice, as well as Ken Johnson, both of whom served on my corn rn ittee

Development and reproduction of convergent lady beetle feeding on green peach aphid exposed to Btt

Creator:: Dogan, Elif Barçin
Resource Type:: Masters Thesis
Full Text:: . Hayes and Dr. Ken Johnson for their review of my manuscripts and participating on my committee. My

Enhancement of biological control for postharvest diseases of pear

Creator:: Benbow, Jesse M.
Abstract:: Yeast biocontrol agents that were applied to 'Bose' and 'Anjou' pears in the field up to three weeks prior to harvest were found to survive on the fruit at high population levels on both pear varieties. Cryptococcus infirmo-miniatus, Cryptococcus laurentii, and Rhodotorula glutinis maintained populations averaging 5 x 10⁶ cfu/fruit...
Resource Type:: Masters Thesis
Full Text:: with C. infirmo-miniatus three weeks before harvest showed significantly lower incidence of decay at

A study of factors affecting the efficiency of maturity separation of peas by sodium chloride brine flotation

Creator:: Chavasit, Visith
Abstract:: The problem in green pea grading system by using brine flotation is loss of some less mature peas (generally regarded as higher in quality and price) in the sinker fraction (lower quality). Green peas were sampled from the production line as follows: (1) blanched but ungraded peas, (2) floater fraction,...
Resource Type:: Masters Thesis
Full Text:: syrup 14 (c) Flotation test 14 (c.l) Test of percent floaters at various brine concentrations 15

Extraction of lentil proteins and their use in supplementation of bread

Creator:: Idris, Nor Aini
Abstract:: The purpose of this study was to extract proteins from lentils for use in bread making to improve nutritional quality of bread. Three solvents, distilled water, 0.7 M NaCl and 0.05 M NaOH solutions, were used for extraction. Extractions were done at an alkaline pH near 10 for 30 min....
Resource Type:: Masters Thesis
Full Text:: . MacDonald and Dr. Zoe A. Holmes for serving on my graduate committee. Gratitude is owed to MARA for

Effect of molecular conformation on the surface properties of polyelectrolyte solutions : xanthan gum model studies

Creator:: Young, San Land
Abstract:: A commercially important polyelectrolyte, xanthan, was chosen for a systematic analysis of the relationship between molecular conformation and surface properties. In the first study the effects of ionic strength, xanthan concentration and temperature on the xanthan molecular conformation were investigated by potentiometric titration. The effects of the same factors and...
Resource Type:: Masters Thesis
Full Text:: Completed July 1, 1986 Commencement June, 1987 APPROVED: Professor c/f Fqpd Soaencsv and Technoloev

Down-borehole permeable barrier reactor : primary substrate selection for aerobic dichlorophenol degradation

Creator:: Kaslik, Peter J.
Abstract:: In situ bioremediation of pentachlorophenol-contaminated ground water in a sequential anaerobic-aerobic down borehole permeable barrier reactor requires a non-toxic primary substrate for dichlorophenol cometabolism. Serum bottle tests comparing the effectiveness of eight primary substrates for aerobic dichlorophenol degradation showed phenol to be the most effective followed by imitation vanilla flavoring,...
Resource Type:: Masters Thesis
Full Text:: members, Dr. Ken Williamson, Dr. Jack Istok and Dr. Michael Freilich. Jason Cole has been an excellent

Biology, distribution and economic threshold of the strawberry root weevil, Otiorhynchus ovatus (L.), in peppermint

Creator:: Cacka, Joseph Francis
Resource Type:: Masters Thesis
Full Text:: , Dr. Arnold Appleby and Dr. Ken Rowe, who provided assistance in the implementation and evaluation

Utilization of inorganic and organic nitrogen by phytoplankton off the Washington and Oregon coasts

Creator:: Kokkinakis, Steven Andon
Resource Type:: Masters Thesis
Full Text:: experience. I would also like to thank my committee members, Charlie Miller, Peter Bottomley, and Ken

Down-borehole permeable barrier reactor : verification of complete mineralization of pentachlorophenol in a sequential anaerobic-aerobic process

Creator:: Roberts, David Bradley
Resource Type:: Masters Thesis
Full Text:: would also like to thank my committee members Dr. Ken Williamson, Dr. Jonathan Istok, and Dr. Roland

Feeding ecology of pelagic larvae of two pleuronectids (English sole, Parophrys vetulus, and butter sole, Isopsetta isolepis) off the Oregon coast

Creator:: Gadomski, Dena Marie
Resource Type:: Masters Thesis
Full Text:: , IsoDsetta Abstract approved: . C. W. Boehiert The feeding habits of the two dominant larval pleuronectids

Bus accessibility for persons with sensory disabilities

Creator:: Hron, Martha
Abstract:: With the passage of the American with Disabilities Act (ADA) it has become a civil rights violation to deny access to persons with disabilities to public transportation. The ADA requires transit agencies to provide accessible buses or equivalent services to persons with mobility, sensory or cognitive impairments. This study examines...
Resource Type:: Masters Thesis
Full Text:: Layton, Jon Kim erling, and Ken Funk. Particularly, for the assistance and support of Kate Hunter

Control of mint root borer, Fumibotys fumalis, with the entomopathogenic nematode, Steinernema carpocapsae

Creator:: Takeyasu, Joyce
Resource Type:: Masters Thesis
Full Text:: members: Drs. Ralph Berry, Ken Rowe, Jeff Miller, and Stella Coakley. I greatly appreciate their

Within and between plant dispersal and distributions of adult females and immatures of Neoseiulus californicus and N. fallacis (Acari: Phytoseiidae) in bean and apple plant systems

Creator:: Pratt, Paul D. (Paul David), 1970-
Abstract:: Intra- and interplant movement and dispersal of the predator mites Neoseiulus californicus (McGregor) and Neoseiulus fallacis (Garman) were studied on both lima bean (Phaseolus lunatus L.) and apple (Malus pumila Miller) branch plant systems that were seeded with excess numbers of the spider mite Tetranychus urticae Koch. Individuals of either...
Resource Type:: Masters Thesis
Full Text:: , 1997 APPROVED: Major Professor, representing Entomology C air of Im nt (:rEntomology Dean of

The effect of job interruptions on human learning

Creator:: Al-haboubi, Muhammad H.
Abstract:: It is a widely accepted premise of industrial management that an interruption in the performance of a task will be accompanied by a decrease in operator skill level upon resuming performance of the task. Moreover, it has been generally assumed that this loss of skill is related to several factors...
Resource Type:: Masters Thesis
Full Text:: Robert Schultz, Dr. Eldon Olsen, and Dr. Ken Funk for their helpful recommen- dations. I would like to

Effectiveness of selected components in behavioral weight-loss interventions : a meta-analysis

Creator:: Wood, Nadine M. Schneider
Resource Type:: Masters Thesis
Full Text:: Donatelle, Dr. Ray Tricker, Dr. Ken Ahrendt, and Dr. Leslie Burns. I appreciate your support during the

Dine right with MENu insight : a nutrition education program for men

Creator:: Freeh, Colleen B.
Abstract:: The purpose of this study was to develop and evaluate a nutrition education program for men on healthy eating when dining out. The Health Belief Model provided the basic framework to identify factors that would potentially motivate men over 40 to change their dietary behavior to reduce heart disease risk....
Resource Type:: Masters Thesis
Full Text:: extend my gratitude to the members of my graduate committee, Dr. Connie Georgiou, Dr. Ken Ahrendt and

Metabolism of (1-¹⁴C) linolenic acid in coho salmon, Oncorhynchus kisutch

Creator:: Parker, Robert S.
Resource Type:: Masters Thesis
Full Text:: incorporation of (1- C) linolenic acid, an essential fatty acid for many fish, into tissues of coho salmon

Vitamins E and C in patients with end-stage renal disease undergoing hemodialysis

Creator:: Smith, Kylie Sheree
Abstract:: Patients with end-stage renal disease undergoing hemodialysis have a high incidence of oxidative stress-related diseases. This study evaluated oxidative stress and inflammatory markers in patients undergoing hemodialysis before and during vitamin E supplementation. Blood samples were obtained before and after dialysis during two separate dialysis sessions to establish baseline measurements....
Resource Type:: Masters Thesis
Full Text:: and C in Patients with End-Stage Renal Disease Undergoing Hemodialysis. Abstract approved: __

Chilling requirements of D'Anjou pears : effect of maturity, fruit calcium, and propylene on ripening responses

Creator:: Gerasopoulos, Dimitrios
Resource Type:: Masters Thesis
Full Text:: ). After the 85%, 100% and 110% mature fruits were held at -1.1° C, for 0,25,40,55,70,85,100,120 and 135

Comparison of indigenous and bioaugmented butane and propane-utilizers for transforming 1,1,1-trichloroethane in Moffett Field microcosms

Creator:: Jitnuyanont, Pardi
Resource Type:: Masters Thesis
Full Text:: of my committee members, Dr. Ken Williamson, Dr. Daniel J. Arp, Dr. David Bella and Dr. Ron Guenther

A hierarchical stream habitat classification system: development and demonstration

Creator:: Frissell, Christopher A.
Abstract:: Classification of Streams and stream habitats is useful for research involving establishment of monitoring stations, determining local impacts of land use practices, generalization from site-specific data, and assessment of basin-wide, cumulative impacts of human activities on streams and their biota. This thesis presents a framework for a hierarchical classification system,...
Resource Type:: Masters Thesis
Full Text:: chagrin. I must also thank the others who have served time on my graduate coinmitee, including Ken

Distribution of Oligonychus (Oligonychus) ununguis (Jacobi) (Acari: Tetranychidae) and predator mite species (Acair: Phytoseiidae) on field-grown Douglas-fir (Pseudotsuga menziesii [Mirb] Franco) Christmas trees

Creator:: Calkin, James D.
Abstract:: The shake and wash technique (samples placed in a jar with alcohol added and shaken to remove the mites) was effective in removing 100% of the predator mites, and adult spruce spider mites from Douglas-fir foliage and 98% of the spruce spider mite nymphs. Eighty-eight percent of the spruce spider...
Resource Type:: Masters Thesis
Full Text:: like to thank Dr. Ken Rowe, Dr. Russ Ingham, Dr. Bill Proebsting, and Dr. Art Boucot for being my

Sound production in Leperisinus oregonous Blackman and L. californicus Swaine (Coleoptera:Scolytidae)

Creator:: Vernoff, Suellen
Abstract:: Both Leperisinus oregonus and L. californicus are bark beetle species which emerge from Fraxinus latifolia brood logs as sexually immature adults and disperse to living ash. Occasional field observations suggest that, for overwintering and maturation feeding, L. oregonus enter trunks and branches, whereas L.; californicus enter twig crotches, buds and...
Resource Type:: Masters Thesis
Full Text:: laboratory facilities, and patiently awaited its completion. Dr. Lee C. Ryker taught me how to use the

Evaluation of a potential Chylamydia psittaci vaccine candidate using recombinant vaccinia virus encoding the infection-specific C. psittaci GPIC proteins IncA and TroA

Creator:: Werth, Eric P.
Abstract:: Members of the family Chlamydiae cause a wide range of diseases. Chlamydia trachomatis and C. pneumoniae are most commonly associated with human disease. C. psittaci and C. pecorum are largely animal pathogens, although C. psittaci can cause pneumonia in the elderly and immunocompromised. A vaccine against these pathogens is desirable,...
Resource Type:: Masters Thesis
Full Text:: Chiamydiapsittaci Vaccine Candidate using Recombinant Vaccinia Virus Encoding the Infection-specific C. psittaci

A history of intercollegiate wrestling at Oregon State University (1909-1974)

Creator:: Nelson, Richard C. (Richard Cornelius), 1932-
Abstract:: Intercollegiate wrestling at Oregon State University had its inception on March 20, 1909. On that day, the Oregon Agricultural College wrestling team wrestled in a home meet against the team from Washington State College. The Beavers, under the tutelage of their first coach Eddie O'Connell, won their first intercollegiate meet,...
Resource Type:: Masters Thesis
Full Text:: , James Arbuthnot, H. C. MacDonald, and J. W. Hargess. Although Oregon Agricultural College did not

Biology of the yellowjacket parasitoid Bareogonalos canadensis (Harrington) (Hymenoptera: Trigonalyidae)

Creator:: Carmean, David
Abstract:: The known biology of Bareogonalos canadensis (Harrington) is based on literature records of six collections from three areas in the Pacific Northwest. The objective of this study was to obtain fundamental knowledge on the biology of B. canadensis, especially its distribution, abundance, and host species, as well as its potential...
Resource Type:: Masters Thesis
Full Text:: approved:__Redacted for Privacy JeffrAy C. Miller The known biology of Bareogonalos canadensis

Photoinduction of kaurene synthetase, an enzyme of the gibberellin biosynthetic pathway, during de-etiolation of pea seedlings

Creator:: Gomez-Navarrete, Gladys
Abstract:: Previous investigations have shown that the enzymes catalyzing the biosynthesis of the gibberellin-type of hormones from mevalonic acid in plants are compartmentalized in plastids. Moreover, the activity of one of the key enzymes in the biosynthetic sequence, kaurene synthetase, exhibits markedly enhanced activity when a dark-grown pea seedling undergoes de-etiolation...
Resource Type:: Masters Thesis
Full Text:: DE-ETIOLATION OF PEA SEEDLINGS Abstract approved: Redacted for Privacy Thomas C. Moore Previous

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:: - HYDROXY BENZOTHIOPHENE BY THE WHITE RAT Abstract approved: Leon C. Terriere In vitro studies of

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:: - HYDROXY BENZOTHIOPHENE BY THE WHITE RAT Abstract approved: Leon C. Terriere In vitro studies of

Microwave methods of measuring resistivity of gallium arsenide

Creator:: Quinn, Alexander C.
Abstract:: This paper is concerned with the determination of gallium arsenide resistivity by measurement of attenuation of microwave energy at 7500 megacycles transmitted through a slice. The first section of this paper describes gallium arsenide properties as compared to silicon, germanium, silicon carbide, and diamond. A description is then given of...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Alexander C. Quinn for the M

Two-dimensional temperature model for target materials bombarded by ion beams

Creator:: Bostick, Kent C.
Abstract:: The ion implantation process is a very precise, controllable, and reproducible method used to enhance material properties of finished components such as ball bearings. Essentially, the target material is bombarded by accelerated ions to form a thin alloyed layer in the substrate. As the ions deposit their kinetic energy in...
Resource Type:: Masters Thesis
Full Text:: bombarded by ion beams AN ABSTRACT OF THE THESIS OF Kent C. Bostick for the degree of Master of Science

Pseudaleuria quinaultiana, a new genus and species of operculate ascomycete from the Olympic Peninsula

Creator:: Lusk-Newman, Demaris E.
Abstract:: Pseudaleuria quinaultiana gen. et sp. nova is described in English and Latin. P. quinaultiana is compared with Aleuria, Anthracobia Cheilymenia, Geopyxis, Humaria, lodophanus, Jafnea, Leucoscypha, Melastiza, Octospora, Pyronema, Scutellinia, Sphaerosporella, Tricharina, Morchella, Cookeina, Phillipsia, Pseudoplectania, Sarcoscypha, and Sarcosoma. Of these genera P. quinaultiana has hairs most similar to those found...
Resource Type:: Masters Thesis
Full Text:: . Redacted for PrivacyAbstract approved: c William C. Denison Pseudaleuria quinaultiana gen. et sp. nova is

The physiological response of a marine phytoplankton species, Dunaliella tertiolecta to mid-wavelength ultraviolet radiation

Creator:: Wolniakowski, Krystyna U.
Resource Type:: Masters Thesis
Full Text:: Robert C. Worrest The recognition of possible reduction in the earth's protective ozone layer has

Purification and partial characterization of a virus associated with korogwe leaf spot disease of sisal

Creator:: Mpunami, Anatolia
Abstract:: Sisal Wave sisalana Perrine), one of Tanzania's main cashcrops, is severely affected by korogwe leaf spot disease (KLS).Infected plants show chocolate brown, concentric, scablike eruptions on both surfaces of mature leaves, and produce stained, low-quality fiber. A flexuous, rod-shaped virus was isolated from KLS-infected sisal leaves and studied at Oregon...
Resource Type:: Masters Thesis
Full Text:: Abstract approved: Redacted forPriv 56y Thomas C. Allen Sisal Wave sisalana Perrine), one of Tanzania's

Nitrogen 15 studies with nonleguminous nitrogen-fixing plants

Creator:: Webster, Stephen Russell
Abstract:: Snowbrush (Ceanothus velutinus), red alder (Alnus rubra), and bitterbrush (Purshia tridentata) are three important nitrogen- fixing nonleguminous species. They commonly grow in association with commercially important conifers in western United States and conceivably could be utilized to add nitrogen to forest ecosystems. Nitrogen 15 gas was used to study nitrogen...
Resource Type:: Masters Thesis
Full Text:: Nitrogen- Fixing Plants Abstract approved: Redacted for privacy C. T. Young1 e)rg Snowbrush

Neuro-muscular responses of 10 athletes and 10 non-athletes in age groups 15, 16, and 17 in the north Salem, Oregon, senior high school

Creator:: Paldanius, Ward Albert
Resource Type:: Masters Thesis
Full Text:: writer wishes to express his appreciation to Dr. C. L. Anderson for his encouragement and valuable

The response of soils, streambanks and instream coliform bacteria levels to grazing management in a riparian area

Creator:: Bohn, Carolyn C.
Abstract:: This thesis describes a case study of the effects of five systems of grazing on watershed values in a deteriorated riparian area. Soil infiltration, bulk density and penetrability, streambank edge movement and coliform bacteria were monitored for seven years along a stream in the Blue Mountains of northeastern Oregon. For...
Resource Type:: Masters Thesis
Full Text:: bacteria levels to grazing management in a riparian area AN ABSTRACT OF THE THESIS OF Carolyn C. Bohn

An electrical method for the determination of water velocity

Creator:: Moore, James Kelly
Resource Type:: Masters Thesis
Full Text:: of tbe pkysica-l factcrs shj.ch 1trmtt the aecuraey ofpresent raethods. Tbe bas*.c Eriueigle ttpon

The economics of food self-sufficiency in Japan : the case of rice and wheat

Creator:: McLoughlin, Daryl
Abstract:: During the two decades 1960-1980 the Japanese government was faced with a problem of declining domestic demand for rice and a persistent over-production which created mounting surpluses stored at public expense. In an attempt to remedy the situation the Japanese government imposed production controls on rice and offered incentives to...
Resource Type:: Masters Thesis
Full Text:: ECONOMICS OF FOOD SELF-SUFFTCTENCY IN JAPAN: Abstract approved by James C. Cornelius During the two

Bird-habitat relationships at multiple spatial resolutions in the Oregon Coast Range

Creator:: Brooks, Jonathan P.
Abstract:: I analyzed the relationship between avian abundance and landscape structure at five spatial resolutions for 30 subbasins in the central Oregon Coast Range using remotely sensed data and a geographic information system (GIS). I developed maps of forest successional stages from Landsat Thematic Mapper (TM) data at a spatial resolution...
Resource Type:: Masters Thesis
Full Text:: Relationships at Multiple Spatial Resolutions in the Oregon Coast Range. Abstract approved: William C. McComb

Nuclear design analysis of low-power (1-30 KWe) space nuclear reactor systems

Creator:: Gedeon, Stephen R.
Abstract:: Preliminary nuclear design studies have been completed on ten configurations of nuclear reactors for low power (1-30 kWe) space applications utilizing thermionic energy conversion. Additional design studies have been conducted on the TRICE multimegawatt in-core thermionic reactor configuration. In each of the cases, a reactor configuration has been determined which...
Resource Type:: Masters Thesis
Full Text:: (1-30 KWe) Space Nuclear Reactor Systems Abstract Approved: Dr. Andre C. Klein Preliminary nuclear

Insect pests affecting clover in Oregon

Creator:: Anderson, Ernest Clifford
Resource Type:: Masters Thesis
Full Text:: his sincere apprecia- tion to Professor Don C. Mote, under whose direction this work was carried

Optimum combination of time and rumen fluid in three in vitro techniques used to predict forage digestibility

Creator:: McNeill, David Gingles
Resource Type:: Masters Thesis
Full Text:: Head ar;,ment of ' nimal cience Chair -- - o c ool G aduate Committee Dean of Graduate School

The effect of edging red alder lumber on cut stock production

Creator:: Schott, Kermit A.
Abstract:: It has been observed that edging flitches into lumber unnecessarily reduces the yield of cut stock. This research investigated the yield of cut stock from unedged red alder (Alnus rubra) flitches, and compared it to yields attained from boards subjected to a variety of edging strategies: conventional, light-edging, actual, severe...
Resource Type:: Masters Thesis
Full Text:: Lumber on Cut Stock Production Abstract approved: Dr harles C. Brunner It has been observed that edging

Partial purification and determination of some properties of an aminotransferase of pea (Pisum sativum L.) plants

Creator:: Matheron, Michael Earl
Abstract:: A transaminase (aminotransferase, EC 2. 6. 1) was extracted and purified approximately 148-fold from shoot tips of pea (Pisum sativum L. cv. Alaska) seedlings and some properties of the enzyme were determined. The purification included acetone precipitation followed by column chromatography on hydroxylapatite. With a-ketoglutarate as co-substrate, the acetone precipitated...
Resource Type:: Masters Thesis
Full Text:: L.) PLANTS Abstract approved: Redacted for Privacy Thomas C. Moore A transaminase

Effect of rations of various energy to body weight ratios on growth rate and feed efficiency of weaner steers fed to slaughter

Creator:: Schlender, John Ralph
Resource Type:: Masters Thesis
Full Text:: author wishes to extend his most sincere apprecia- tion to Dr. David C. England, Associate Frofessor of

Supervisory control of a doubly-fed machine

Creator:: Werahera, Priya N.
Abstract:: An EMCON-D distributed process controller is evaluated for control and monitoring of an experimental doubly-fed machine system. A closed-loop control circuit is implemented to operate the doubly-fed machine with constant rotor current. A standard PID algorithm as well as an algorithm tailored to the doubly-fed machine are evaluated.
Resource Type:: Masters Thesis
Full Text:: approved: Redacted for Privacy Roy C. Rath] a An EMCON-D distributed process controller is evaluated for

An in-situ experiment on the effects of zooplankton grazing and nutrient regeneration on the phytoplankton of Yaquina Bay, Oregon

Creator:: Deason, Ellen Elizabeth
Abstract:: Natural populations of phytoplankton from Yaquina Bay, Oregon, were incubated in large polyethelene bags in- situ, with and without the natural assemblage of zooplankton. Samples were taken daily for two weeks in April, 1974. The biomass of phytoplankton in the bag without grazers reached values two to three times the...
Resource Type:: Masters Thesis
Full Text:: ON PTJ' 1DT-TV 9'f Herbert C. Natural populations of phytoplankton from Yaquina Bay, Oregon, were

Biology of Cnephasia longana Haworth : an insect pest of several important crops in Oregon

Creator:: Edwards, W. D. (William Donald), 1904-
Resource Type:: Masters Thesis
Full Text:: -ites C, longana Haw. larvae FIrst Observed in Field -------------------- 19 3 - Dates on Presence of

Some components of the volatiles from rye flour (Secale cereale)

Creator:: Prince, Marion
Abstract:: The volatile components of rye flour were isolated by steam distillation and trapped in cold traps under vacuum. After preliminary tests indicated the presence of carbonyl compounds, the distillate was reacted with 2,4 dinitrophenylhydrazine to convert the carbonyl compounds to their stable derivatives, 2,4 dinitrophenylhydrazones. Three classes of monocarbonyls were...
Resource Type:: Masters Thesis
Full Text:: : Andrea C. Mackey/ The volatile components of rye flour were isolated by steam distillation and

Distribution, phenology, and parasitism of the winter moth, (Operophtera brumata L.), in western Oregon

Creator:: Kimberling, Diana Nalani
Abstract:: An exotic pest of deciduous plants, Operophtera brumata (L.), was discovered in Portland, Oregon in 1978. O. brumata, the winter moth, is native to northern Africa and temperate Eurasia. Its range extends from Scandanavia, Britain, and France to Japan. It is also now well established on the North American continent...
Resource Type:: Masters Thesis
Full Text:: for Privacy f/ 10 / Jeffrey C. Miller An exotic pest of deciduous plants, Operophtera brumata (L

A comparison of noise environments between offices of Langton Hall and other offices on the Oregon State University campus

Creator:: Healey, John Patrick
Resource Type:: Masters Thesis
Full Text:: Levels. 24 3. Distribution of Subjects in Sec. Gp. L and Sec. Gp. C Relative to Ranked Age and Ranked

An electron micrographic study of IHNV and IPNV : development of methods for determining particle-infectivity ratios and for rapid diagnosis

Creator:: Durrin, Linda Kay
Abstract:: A rapid virus detection method was developed for Infectious Hemotopoietic Necrosis Virus (IHNV). The virus detection method could be applied to Infectious Pancreatic Necrosis Virus (IPNV) under certain conditions. It was possible to detect IHNV to a lower limit of 1.7 X 10⁴ Tissue Culture Infectious Dose for 50% (TCID₅₀)...
Resource Type:: Masters Thesis
Full Text:: JoAnn C. Leong for giving me a chance and for all the help, both scholastically and mentally, which

To mend the walls of Babel : essays on identity and ethnicity

Creator:: Inoue, Asao B.
Abstract:: In this thesis, I explore experiences with my identity, looking at the identity people have seen me as, who I've thought I was, and the identities my mother's and father's different family backgrounds suggest I should be. I have divided this discussion into three main areas: my complexion, the first...
Resource Type:: Masters Thesis
Full Text:: approved: Wayne C. Anderson In this thesis, I explore experiences with my identity, looking at the

A stratigraphic study of the marine Cretaceous rocks near Mitchell, Oregon

Creator:: McKnight, Brian Keith
Abstract:: Nearly 9,000 feet of Cretaceous mudstones, shales, sandstone, and conglomerates are exposed along the northeast-trending Mitchell anticline of central Oregon, These rocks are divided into two formations on the basis of criteria developed in this investigation. The lower formation, hereby designated the Meyers Formation, is 4,716 feet thick at its...
Resource Type:: Masters Thesis
Full Text:: - uals that have made a contribution to this study. To my major pro- fessor, Dr. Jon C. Cummings, I

Nutrient uptake by conifer seedlings as influenced by root CEC and competing species

Creator:: Schöne, Dieter Hans-Friedrich
Abstract:: The objectives of this study were to establish a suitable method for the measurement of the root cation-exchange capacity of conifer seedlings, and to examine possible influences of this root characteristic on nutrient absorption from a Bellpine soil under greenhouse conditions. The exchange sites of fresh, excised roots were saturated...
Resource Type:: Masters Thesis
Full Text:: Abstract approved: Redacted for Privacy 1:1!)3i. C. T..) You0berg The objectives of this study were to

Evaluation and supervision of student teachers in business subjects

Creator:: Cleveland, Claudia Buck
Resource Type:: Masters Thesis
Full Text:: presented July 13, 1951 Typist: Claudia Buck Cleveland ACKNOWLEDGMENT To Doctor C. T. Yerian and Mrs

Food sources of calcium : The determination of calcium in meat cooked with acid

Creator:: Beals, Maple Cole
Resource Type:: Masters Thesis
Full Text:: but, since they are usually co::cpletely oxidized by the bod~c UJ1less tc•.ken in excess, they do

The development and application of an evaluation questionnaire used to compare opinions towards an audiovisual foodservice training program

Creator:: Cochran, M. Teresa
Abstract:: The primary purpose of this study was for three select groups to critically appraise the Personal Hygiene for Foodservice Workers sound/slide system. These three groups (Media Specialists, Content Experts and the Learners) were identified in a literature search as being those individuals most directly responsible for evaluating the worth of...
Resource Type:: Masters Thesis
Full Text:: Opinions Towards An Audiovisual Foodservice Training Program Abstract approved: Dr. David C. Lawson The

Reducing the fat in school lunch : the effect on 24-hour intake by fifth graders

Creator:: Krupin, Nancy
Resource Type:: Masters Thesis
Full Text:: : Constance c/oeorgiou Recommendations have been made to reduce the fat content of school lunch to a level

Modelling, validation and simulation of multi-degree-of-freedom nonlinear stochastic barge motions

Creator:: Bartel, Warren A.
Abstract:: Recent developments in estimation of the survivability of a U.S. Navy transport barge in random seas are extended to improve accuracy. The single Degree-of-Freedom (DOF) model of a extreme roll response of a barge used in previous research is replaced by a 3-DOF roll-heave-sway model to include linear and nonlinear...
Resource Type:: Masters Thesis
Full Text:: : Solomon C. . Yim Recent developments in estimation of the survivability of a U.S. Navy transport barge

Nuclear investigations of the eletrolysis of D₂O using palladium cathodes and platinum anodes

Creator:: Zahm, Lance Leon
Resource Type:: Masters Thesis
Full Text:: come to pass. My sincere appreciation goes out to Dr. Andrew C. Klein, Dr. Alan Robinson, Dr. Jose

Parents' social expectations as correlates of children's peer relations

Creator:: Pennington, Darren C.
Abstract:: Recent peer relations studies that have included parents as subjects have pointed to supporting behaviors performed by parents and their role in the development of children's peer relations. Findings from these studies have been similar to explanations of expectation effects. That is, expectation holders support their expectations by behaving in...
Resource Type:: Masters Thesis
Full Text:: peer relations AN ABSTRACT OF THE THESIS OF Darren C. Pennington for the degree of Master of Science

Synoptic influences on the evolution of a severe hailstorm environment

Creator:: Duker, Dick C.
Abstract:: Two summertime days were investigated, 27 and 28 June 1973, to observe the changes in the environment that led to the severe hailstorm on 28 June in the National Hail Research Experiment (NHRE) network, Colorado. Within the network thermodynamic analyses revealed the 28th to have: (1) Above-average low-level moisture. (2)...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF DICK C. DUKER for the degree of

Simplified stability assessment for low volume road cut and fill slopes

Creator:: Pratt, Randy C.
Abstract:: Many miles of roads are built in the Pacific Northwest Forests to provide access for logging and fire protection. Logging roads often cross steep mountainous terrain. Logging roads and the associated cut and fill slopes represent a discontinuity in the natural stress state in the soil mantle. These conditions result...
Resource Type:: Masters Thesis
Full Text:: fill slopes AN ABSTRACT OF THE THESIS OF Randy C. Pratt for the degree of Master of Science in

Relationships between preschool aged children's self-concepts and their parents' attitudes

Creator:: Schaumburg, Judith C.
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF JUDITH C. SCHAUMBURG for the in

The impact of ownership type on the cost and quality of nursing home care in the United States

Creator:: Rosetti, Maureen C. O'Keeffe
Abstract:: The overall objective of this research was to analyze the effect of ownership status on 1) quality of care delivered, 2) the cost of nursing homes in the United States and 3) wages to Registered Nurses. The model developed here uses a two stage least squares technique to correct for...
Resource Type:: Masters Thesis
Full Text:: nursing home care in the United States AN ABSTRACT OF THE THESIS OF Maureen C. O'Keeffe Rosetti for

Digital analysis of remotely sensed images for evaluating color in turfgrass

Creator:: Friedkin, William C., 1954-
Abstract:: Most conventional approaches to rating turf color for different turf varieties grown under similar conditions or for the same variety grown under different cultural conditions employ a visual subjective rating. By digitizing remotely sensed images acquired by use of a helium filled blimp and a Canon EOS camera, we were...
Resource Type:: Masters Thesis
Full Text:: December 6,1996 Commencement June 1997 Master of Science thesis of William C. Friedkin presented on

Three-dimensional finite element design procedure for the brushless doubly fed machine

Creator:: Thompson, Brenda E.
Abstract:: Brushless Doubly Fed Machines (BDFM) have potential advantages in variable speed generation and adjustable speed drive applications. The most significant of these advantages is a reduction in the power electronic converter rating, and therefore a reduction in overall system cost. Presently, efforts are being directed at optimizing the design of...
Resource Type:: Masters Thesis
Full Text:: also like to thank Dr. Rene Spee and Dr. G. C. Alexander for their helpful suggestions about my

The effects of paclobutrazol and uniconazol on red clover seed production

Creator:: Silberstein, Thomas B.
Abstract:: Excessive growth by red clover, Trifolium pratense L., grown for seed interferes with maximum seed production and harvest in Oregon's Willamette Valley. This study was conducted during 1986 and 1987 on red clover cv. Kenland to determine if plant height and dry matter production could be inhibited and seed yields...
Resource Type:: Masters Thesis
Full Text:: for Privacy William C. Y ung, III Excessive growth by red clover, Trifolium pratense L., grown for

The reproductive ecology of the pacific yew (Taxus brevifolia nutt.) under a range of overstory conditions in western Oregon

Creator:: DiFazio, Stephen P.
Abstract:: The influence of overstory openness on the reproductive ecology of Pacific yew (Taxus brevifolia Nutt.) was investigated on 4 sites in western Oregon over 2 years. The breeding system of T. brevifolia was found to deviate from pure dioecy under a broad range of canopy and site conditions. Production of...
Resource Type:: Masters Thesis
Full Text:: survey. Ken Rey and other personnel from the Sweet Home Ranger District, Don Henshaw, George

Rotary bispectral analysis of the wind to current energy transfer

Creator:: Sobey, Edwin J. C., 1948-
Resource Type:: Masters Thesis
Full Text:: Previous Site D Analysis 16 2. Description of Data Analyzed 17 B. Statistical Analysis Techniques 18 C

Diet and nutrition of breeding canvasback and redhead ducks at Ruby Lake National Wildlife Refuge, Nevada

Creator:: Noyes, James Harry
Abstract:: Diet, nutrition, and foraging strategies of canvasbacks (Aythya valisineria) and redheads (A. americana) were studied by collecting actively feeding birds throughout the reproductive season in 1980 and 1981; samples of available foods were taken each time a bird was collected. Nutrient composition of the aggregate diet was determined for each...
Resource Type:: Masters Thesis
Full Text:: throughout this project. Graduate Committee members Drs. E. C. Meslow, N. H. Anderson, and L. Calvin

Development of oven and Karl Fischer techniques for moisture testing of grass seeds

Creator:: Benjamin, Ethan
Abstract:: Seed moisture is a primary factor influencing seed quality during harvesting, storage, and marketing of grass seed. However, the Association of Official Seed Analysts' Rules for Testing Seeds do not contain methods for moisture testing. The oven methods in use by seed testing laboratories in the U.S. are diverse and...
Resource Type:: Masters Thesis
Full Text:: weight at temperatures of 90, 100, and 105°C gave moisture percentages lower than the true value. Drying

The dispersion of some amorphous and crystalline clays

Creator:: Hickman, John S.
Resource Type:: Masters Thesis
Full Text:: suspensions from 20°C to 4°C. As the temperature was decreased, lower concentrations of electrolyte were

Toxicity of some commonly used pesticides to Trioxys Pallidus and its establishment in filbert orchards of Willamette Valley

Creator:: Saeed, Mohammad
Abstract:: A parasitic wasp, Trioxys pallidus Haliday (Hymenoptera: Aphidiidae) was imported from Europe and initially released against the filbert aphid Mvzocallis coryli (Goetze) in hazelnut (filbert) orchards of the Willamette Valley, Oregon beginning in 1984. In the present study, I investigated the establishment rates of this parasitoid. A total of 13...
Resource Type:: Masters Thesis
Full Text:: Privacy Held of0 Department c Entomology Redacted for Privacy Dean of SclYc-1 Date thesis is presented

Shallow crustal structure of the caldera of Axial Seamount, Juan de Fuca ridge

Creator:: van Heeswijk, Marijke
Abstract:: An airgun refraction line along the length of the caldera of Axial Seamount as recorded by three Ocean Bottom Seismometers has been analyzed using the tau-zeta inversion technique (Dorman and Jacobson, 1981). Five resulting velocity profiles show that the seismic velocities of the upper 1.4 km of the crust are...
Resource Type:: Masters Thesis
Full Text:: crust of the caldera could be due to stresses generated in the area of overlap (Macdonald et al., 1984

Carbon storage in a Pacific Northwest conifer forest ecosystem : a chronosequence approach

Creator:: Janisch, Jack E.
Abstract:: As concern over global warming intensifies, sequestration and storage of atmospheric CO2 has become an important scientific and policy issue. Confusion persists, however, over interpretation of forest carbon (C) source-sink dynamics, in part because conclusions drawn depend on temporal and spatial scales of analysis (e.g. day-week scale vs. successional-scale), type...
Resource Type:: Masters Thesis
Full Text:: (C) source-sink dynamics, in part because conclusions drawn depend on temporal and spatial scales

Radish anthocyanin extract as a natural red colorant for maraschino cherries

Creator:: Hundskopf, Maria Monica Giusti
Abstract:: Red radish anthocyanin extract (RAE) was investigated for coloring brined cherries as an alternative to FD&C Red No. 40. Red radish (Raphanus sativus L.) anthocyanins were extracted from liquid nitrogen powdered epidermal tissue using acetone, partitioned with chloroform, and isolated using C-18 resin. The monomeric anthocyanin content was determined by...
Resource Type:: Masters Thesis
Full Text:: as an alternative to FD&C Red No. 40. Red radish (Raphanus sativus L.) anthocyanins were extracted

Ultrafiltration of grape juice : effects on composition, quality and preservation

Creator:: Fombin, Joseph Forchap
Abstract:: Ultrafiltration (UF), using Romicon pilot-scale hollow-fiber cartridges (Model HFXS-MK11) in the batch mode, was investigated as a possible procedure for clarifying, stabilizing and preserving White Riesling (WR) and Thompson Seedless (ThS) grape juice. The effect of UF processing of SO₂-treated or untreated juice, of process temperature and membrane molecular weight...
Resource Type:: Masters Thesis
Full Text:: contributes over two billion dollars a year to the economy (Ken- drick, Jr., 1980). Although wine represents

Perturbed angular correlation investigation of cubic zirconia

Creator:: Fuchs, Heinz D.
Abstract:: Perturbed angular correlation (PAC) spectra of fully yttria-stabilized (cubic) zirconia with Y₂0₃ contents of 35.4 wt. %, 27.8 wt. %, and 16.9 wt. %, respectively, were measured using the isotope ¹⁸¹Ta as probe nucleus. PAC spectra in cubic zirconia are characterized by a wide frequency distribution due to contributions of...
Resource Type:: Masters Thesis
Full Text:: cations. In the entire temperature range (24°C to 1300°C) the cations can be considered static, whereas

Vegetation response to prescribed fire in the Kenai Mountains, Alaska

Creator:: Boucher, Tina V.
Abstract:: The Chugach National Forest has been using prescribed fire as a wildlife habitat management tool since l977. Between 1977 and 1997 about 4,000 hectares have been burned on the Kenai Peninsula to promote regeneration of woody plant species used by moose (Alces alces). Browse species include paper birch (Betula papyrifera),...
Resource Type:: Masters Thesis
Full Text:: approved: -,-.,6~--"-------1-• ---<,.:,.." _.·,_____..c'""',,.__,,;.;;..,:_ __________ _ Michael Newt~n

Components of bovine plasma that enhance gel strength in Pacific whiting surimi

Creator:: Peters, Margo Y.
Abstract:: Proteolysis of myofibrillar proteins in Pacific whiting surimi occurs when the 50- 70°C temperature range is reached during standard cooking procedures (e.g. 90°C for 15 min). This proteolytic activity results in the softening of surimi gels. Bovine plasma protein (BPP) is the most effective of the food-grade inhibitors used to...
Resource Type:: Masters Thesis
Full Text:: - 70°C temperature range is reached during standard cooking procedures (e.g. 900C for 15 min). This

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