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 effects of water withdrawals on the emergence timing, adult body mass, and total emerging biomass of aquatic insects from two northeast Oregon rivers

Creator:: Brown, Phil D.
Abstract:: Small low-head diversion dams are capable of removing much of the flow of a river, often resulting in increased water temperatures and habitat loss. Warmer temperatures have been shown to accelerate aquatic invertebrate growth and development, and discharge reductions can reduce instream habitat, suggesting that water withdrawals may alter both...
Resource Type:: Masters Thesis
Full Text:: ? CONTRIBUTION OF AUTHORS Dr. David Wooster and Dr. Sherri Johnson aided in data analysis and interpretation

The SafeD model : incorporating episodic disturbances and heuristic programming into forest management planning for the Applegate River Watershed, southwestern Oregon

Creator:: Graetz, David H.
Abstract:: A hybrid landscape optimization/simulation model called SafeD (Simulation and analysis of forests with episodic Disturbances) was built to address the needs of forest management planning in the Applegate River Watershed, southwestern Oregon (the Apple gate Project). There are two goals of the Applegate Project: 1) search for forest policies and...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF David H. Graetz for the

Feasibility study of a surface vehicle utilizing a unitary control system

Creator:: Bassett, David Arthur
Abstract:: A feasibility and practicality study was made of an automotive-type surface vehicle that employed a centralized or unitized means of control. The control functions consisted of: steering, acceleration, deceleration, clutch actuation, gear changes, turn signal operation and horn actuation. These controls were arranged in such a manner that the driver...
Resource Type:: Masters Thesis
Full Text:: control system AN ABSTRACT OF THE THESIS OF David Arthur Bassett for the Master of Science (Name

Watershed management in the Johnson Creek Basin

Creator:: Gerhardt, Nikolaus
Abstract:: The Johnson Creek Basin, Oregon is an example of the physical and jurisdictional problems often associated with watershed urbanization. Implementation of solutions to problems of water quality and quantity in the basin have been hindered by political and social constraints. Reasons for the failure of previous management proposals are analyzed...
Resource Type:: Capstone Project
Full Text:: 36 Emery, John C., Why Nothing Has Happened: A Case Study of Johnson Creek (unpublished advance copy

A reinvestigation of the molecular structure of cyclohexane-1,4-dione by electron diffraction

Creator:: Johnson, Robert David
Abstract:: We have investigated the gaseous structure of cyclohexane- 1,4-dione via electron diffraction. The large amplitude motion, as suggested from spectroscopic, dipole moment and earlier electron diffraction data was studied. The structure was refined in two types of models: a single "distorted boat" conformer, and a model comprised of a superposition...
Resource Type:: Masters Thesis
Full Text:: -1,4-dione by electron diffraction AN ABSTRACT OF THE THESIS OF ROBERT DAVID JOHNSON for the degree

The role of ascorbic acid on discoloration of strawberry juice and concentrate

Creator:: Poei, Metty Soek-Kioen
Abstract:: The purpose of this.investigation was to determine how enzymes and oxygen influence the role ascorbic acid has on pigment degradation and browning during storage for strawberry juice and concentrate. The ascorbic and dehydroascorbic acid content of blanched and unblanched, nitrogen-treated and air-exposed samples of strawberry juice and concentrate was measured...
Resource Type:: Masters Thesis
Full Text:: , 1934; Johnson and Zilva, 1937; and Stone, 1937). Ponting and Joslyn (1948) pointed out that there

Evaluation of Materials for Use in Open-Cycle Magnetohydrodynamic Power Generation

Creator:: Bowen, Michael S.
Abstract:: Recent interest in oxy-fuel combustion for carbon capture, as well as advancements in technologies such as magnetics, materials, and computational modeling has sparked renewed interest in magnetohydrodynamic (MHD) power generation. The increased temperatures of oxy-fuel combustion versus air-fuel combustion poses a challenge in the selection of materials for plasma exposed...
Resource Type:: Masters Thesis
Full Text:: : ______________________________________________________________________________ David P. Cann C. Rigel Woodside Abstract: Recent interest in oxy-fuel combustion for carbon

The thermal characteristics of hydrologically intact Type C and E streams in eastern Oregon

Creator:: Hopkins, Karl T.
Abstract:: Many streams in eastern Oregon are listed as water quality impaired on the basis of water temperature. However, it is often difficult to predict water temperature for these streams even if there are no anthropogenic impacts. We measured air and water temperature and stream characteristics on three Type C and...
Resource Type:: Masters Thesis
Full Text:: of Hdrologically Intact Type C and E Streams in Eastern Oregon Abstract approved: n3J. Svej Many

Effects of Current Hatchery Practices on Salmon Odor Recognition and Responses

Creator:: Lemanski, Joseph R.
Abstract:: Salmon hatcheries have been utilized throughout the Pacific Northwest for many decades to mitigate losses, supplement natural spawning populations, and to provide tribal, sport and commercial fishing opportunities. Currently, there is substantial debate on their efficacy and the potential threats hatchery-reared salmonids pose to natural populations. These concerns have lead...
Resource Type:: Masters Thesis
Full Text:: Responses Abstract approved: ______________________________________________________ David L.G

Relative palatabilities of Great Basin forages and mechanisms elicting selective grazing by cattle

Creator:: Cruz-Guerra, Ruben
Resource Type:: Masters Thesis
Full Text:: approved: Dr. David C. G. opp Selective grazing by cattle can be used as a tool to impact or favor

The contribution of the Type A school lunch to the adolescent female's total nutrient intake

Creator:: Surlak, Lorraine Diane
Resource Type:: Masters Thesis
Full Text:: Intake Abstract approved: _ U E$fzabeth Johnson The nutritional contribution of the Type A

Nutrient intake of selected non-reservation native Americans residing in southwest Oregon

Creator:: Dustrude, Ann Marie
Abstract:: A study of nutrient intakes was conducted on the Southwest Oregon non-reservation Indian population during June and July of 1980. Participating households were selected by random methods from a Southwest Oregon Indian Health Project listing of Indian households in the six-county area. Twenty-four-hour dietary recalls were obtained by interview method...
Resource Type:: Masters Thesis
Full Text:: Southwest Oregon Abstract approved: _ - 0 •-" Elizabeth Johnson A study of nutrient

Professional communications between physicians and dietitians as reported by dietitians

Creator:: Hood, Julie Ford
Abstract:: Data regarding professional communications between physicians and dietitians in hospitals were obtained from results of 84 responses to a survey of all hospital dietitians (135) listed in the 1982 Oregon Dietetic Associations' Membership and Employment Directory. The data were gathered utilizing an initial mail-out questionnaire and a follow-up log booklet...
Resource Type:: Masters Thesis
Full Text:: : .. ... / El/zabeth Johnson Data regarding professional communications between physicians and dietitians in

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

The determination of pyridoxal phosphate by the measurement of ¹⁴Co₂ enzymatically released from tyrosine-1-¹⁴C

Creator:: Woodring, Muriel Josepha
Abstract:: The increasing knowledge of the significance of vitamin B₆ in human metabolic processes has emphasized the importance of developing reliable means of assessing nutritional status with respect to this vitamin. One possible approach to this end is the measurement of pyridoxal phosphate in blood or plasma, particularly since this phosphorylated...
Resource Type:: Masters Thesis
Full Text:: possible. I especially wish to thank Dr. David Willis, my major professor, for his patient guidance and

Spotted owls, great horned owls, and forest fragmentation in the central Oregon Cascades

Creator:: Johnson, David Harold, 1956-
Resource Type:: Masters Thesis
Full Text:: fragmentation in the central Oregon Cascades AN ABSTRACT OF THE THESIS OF David Harold Johnson for the degree

The willingness of Central Oregon irrigators to donate water rights to augment Deschutes River flow

Creator:: Barkley, David, 1972-
Abstract:: This study used contingent valuation techniques to estimate the willingness of central Oregon Irrigators to donate a portion of their water rights to increase Deschutes River flow. This study was different from previous contingent valuation studies in that it used water rights as the payment vehicles instead of dollars -...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF David Barkley for the degree of

Effects of cultural practices on the yield and vitamin C content of broccoli

Creator:: Anderson, Wendy (Wendy Lee), 1951-
Resource Type:: Masters Thesis
Full Text:: Practices on the Yield and Vitamin C Content of Broccoli Abstract approved: ^ ^ H^rry^ Mack

Response of scorbutic guinea pigs to ascorbic acid and adrenocorticotropic hormone (ACTH)

Creator:: Riker, Joseph Thaddeus III
Abstract:: Thirty-six female guinea pigs were placed on a scorbutogenic diet for 14 days and then divided into groups of four. Three groups received adrenocorticotropic hormone (ACTH) with each group given 10, 20, or 40 units. Three groups each received 50 mg of ascorbic acid and three groups received 50 mg...
Resource Type:: Masters Thesis
Full Text:: , ACTA, Incorporated, 1954. p. l27 -151. Bahn, R. C. and David G1ick. Studies in histochemistry: Effects

Land ownership and forest cover in the Oregon Coast Range : spatial pattern and social ground-truthing

Creator:: Stanfield, Brooks J.
Abstract:: We use qualitative and quantitative methods to explore social and spatial relationships between land ownership and forest cover in the Oregon Coast Range. Using a Geographic Information System (GIS) and regression analysis, we tested for spatial relationships between the structure of land ownership and forest cover across 66 watersheds in...
Resource Type:: Masters Thesis
Full Text:: . Abstract Approved._· ________________________ _ John C. Bliss We use qualitative and quantitative

Overwintering survival of stem rust on perennial ryegrass : construction of a simulation model, and effects of the mycoparasite Sphaerellopisis filum

Creator:: Gordon, Tyler C.
Abstract:: Stem rust, caused by the fungus Puccinia graminis subsp. graminicola, can cause yield reductions exceeding 90% on perennial ryegrass (Lolium perenne L.) crops grown for seed if not treated with fungicide in the spring. There is evidence that late-spring stem rust epidemics are initiated by populations that survived the winter....
Resource Type:: Masters Thesis
Full Text:: throughout this research process. I would like to thank Drs. Christopher Mundt, Kenneth Johnson and David

Significance of a graphic plot of developmentally delayed children on anthropometric growth charts and its relationship to dietary intake

Creator:: Hughes, Jamie Marie
Abstract:: Twenty-five idiopathic developmentally delayed children between two and ten years old were studied. A group of thirty non-delayed children of like age and sex was used as a control. Dietary information was collected for each subject via a 24-hour dietary recall, a two-day diet record, and a food frequency crosscheck....
Resource Type:: Masters Thesis
Full Text:: %. Johnson Twenty-five idiopathic developmentally delayed children be- tween two and ten years old were

Residential water conservation and energy efficiency impacts through effective scheduling and opportunities for regional expansion : a case study of a gas tankless water heater with recirculation loop

Creator:: Johnson, Erica M.
Abstract:: This study focused on the potential water and energy savings from implementing a revised schedule of a recirculation pump connected to a condensing gas tankless water heater located in a study home in Portland, Oregon. The existing recirculation pump activation schedule was studied for its impact on the overall water...
Resource Type:: Masters Thesis
Full Text:: ______________________________________________________ AN ABSTRACT OF THE THESIS OF Erica M. Johnson

Current and future economic impact of Mount Hood National Forest outdoor recreation consumption

Creator:: Anderson, David M. (David Matthew), 1964-
Abstract:: Mount Hood National Forest provides opportunities for many forms of outdoor recreation. Recreationists spend money to pursue outdoor activities on public lands such as national forests and national parks. The purpose of this study was to measure the economic contribution of national forest visitor expenditures on the local economy of...
Resource Type:: Masters Thesis

Evaluation of kasugamycin-use strategies designed to delay development of resistance in Erwinia amylovora

Creator:: Hubbard, Andrew Robert
Abstract:: The antibiotics, streptomycin sulfate and oxytetracycline, are used widely for fire blight suppression in the Pacific Northwest region of the United States. The efficacy of streptomycin, however, is compromised by widespread streptomycin-resistance in E. amylovora populations, and oxytetracycline is only partially effective. Consequently, for several years, the aminoglycoside antibiotic, kasugamycin...
Resource Type:: Masters Thesis
Full Text:: approved: ______________________________________________________ Kenneth B. Johnson The

Rocky Mountain elk (Cervus elaphus nelsoni) behavior and movement in relation to lunar phases

Creator:: Woodside, Gail J.
Abstract:: Two small herds of Rocky Mountain (Cervus elaphus nelsoni) cow elk were, collared, observed, and spatially mapped for 10 continuous six day trials, conducted during 2008-2009. Five trials occurred during full moon periods and five trials during new moon periods. The elk were collared with 1 second interval GPS loggers...
Resource Type:: Masters Thesis
Full Text:: : _________________________________________________ Douglas E. Johnson Two small herds of Rocky Mountain (Cervus elaphus

Persistence of spatial distribution patterns of coastal cutthroat trout in a Cascade mountain stream

Creator:: Novick, Marc S.
Abstract:: Previous research in South Fork Hinkle Creek suggested that coastal cutthroat trout exhibit an aggregated spatial pattern across multiple spatial scales. To evaluate the persistence of the observed abundance patterns and identify factors that affect those patterns, half-duplex passive integrated transponders (PIT-tags) were implanted in 320 coastal cutthroat trout (>...
Resource Type:: Masters Thesis
Full Text:: . Abstract approved: Robert E. Gresswell Sherri L. Johnson Previous research in South Fork

A study of intensities in range surveys by the square-foot-density method

Creator:: Anderson, E. William
Resource Type:: Masters Thesis
Full Text:: , Oregon; to r. R. C-. Johnson, Professor o±' Animal Husbandry, Oregon State College; to the Regional

Analysis and design of a small gas sampling pump

Creator:: Tuttle, Kenneth Lewis
Abstract:: In an attempt to satisfy an existing need for a small gas sample pump, a proposed design was analyzed and determined to be feasible and a design for a prototype model was produced. The design is of a chemically inert, leak-proof, unlubricated, sliding-vane- type pump. It is designed to pump...
Resource Type:: Masters Thesis
Full Text:: . Johnson, for proposing this project and for advising throughout its duration. The assistance and advice

Computer-assisted inventory control model for automobile spare parts distribution

Creator:: Stephanides, Photis Gregory
Abstract:: A model was developed for the inventory control of the Volkswagen spare parts distribution in Greece. The model utilizes the capabilities of a digital computer, and features four systems, the necessary system files and various routines. Flexible statistical forecasting techniques are included for forecasting the distributor parts demand. Computerized procedures...
Resource Type:: Masters Thesis
Full Text:: Deep gratefulness is owed to Professor Linwood Johnson who has been a constant inspiration. All the

Cattle herd dynamics and performance under village husbandry in the Kolda region (Southern Senegal)

Creator:: Sissokho, Mohamadou M.
Resource Type:: Masters Thesis
Full Text:: opportunity to pursue this degree. My sincere thanks to my major Professor Dr. Douglas Johnson and to 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

A C source code browsing system

Creator:: Steinkamp, James M.
Abstract:: A project is described wherein a source code browser was implemented based upon tasks performed by software engineers looking for source code modules with only UNIX utilities. These tasks were discovered by observing the actions of software engineers looking for code modules in a library, The success of the implementation...
Resource Type:: Capstone Project
Full Text:: ) A C Source Code Browsing System Produced for an Oregon

Influence of dwarf mistletoe (Arceuthobium americanum) on stand structure, canopy fuels, and fire behavior in lodgepole pine (Pinus contorta) forests 21-28 years post-mountain pine beetle (Dendroctonus ponderosae) epidemic in central Oregon

Creator:: Agne, Michelle C.
Abstract:: Lodgepole pine (Pinus contorta) forests are widely distributed throughout western North America. However, the lodgepole pine forests of central Oregon are ecologically unique to the region, with a mixed severity fire regime, low cone serotiny, and their occasional presence as a climax species. Most of the research conducted regarding the...
Resource Type:: Masters Thesis
Full Text:: Abstract approved: David C. Shaw Lodgepole pine (Pinus contorta) forests are widely distributed

The Effects of Seed Source and Planting Environment on Douglas-fir (Pseudotsuga menziesii) Foliage Diseases

Creator:: Wilhelmi, Nicholas
Abstract:: Douglas-fir (Pseudotsuga menziesii) is a commercially and ecologically important tree species native to western North America. The foliar pathogens Phaeocryptopus gaeumannii, the causal agent of Swiss Needle Cast, and Rhabdocline species, the causal agents of Rhabdocline needle cast, are two important pathogens specific to Douglas-fir. These pathogens are highly influenced...
Resource Type:: Masters Thesis
Full Text:: . Abstract approved: ______________________________________________________ David C. Shaw

Cycling and reproductive phenomena in gilts

Creator:: Knott, Robert Edward
Abstract:: Purebred Yorkshire gilts from a confinement managed herd were reared to test weights away from the sow and boar herd. Thirty-eight gilts weighing between 73 and 80 kilograms constituted group A gilts; 38 gilts weighing between 91 and 100 kilograms constituted group B gilts; and 47 gilts weighing 114 kilograms...
Resource Type:: Masters Thesis
Full Text:: : Redacted for privacy David C. England, Profa or of Animal Science Purebred Yorkshire gilts from a

Successional changes associated with benthic assemblages in experimental streams

Creator:: Busch, David E.
Abstract:: Experimental streams constructed by the Weyerhaeuser Company, Tacoma, Washington, at Kalama Springs, Washington, were used to observe successional changes in the benthos. Community changes were observed relative to experimental manipulations of light intensity and nitrate concentration in two experiments. The development of benthic assemblages was followed for 150 days after...
Resource Type:: Masters Thesis
Full Text:: in experimental streams AN ABSTRACT OF THE THESIS OF David Edward Busch for the degree of Doctor

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

Parasitoid wasps of Douglas-fir Needle Midge (Contarinia pseudotsugae Condrashoff,1961) larvae in two Christmas tree farms, Willamette Valley, Oregon

Creator:: Voyvot, Saliha
Abstract:: Douglas-fir needle midge (Contarinia pseudotsugae, Diptera: Cecidomyiidae) is a native invasive species in Pacific Northwest Christmas tree farms, seed orchards, and nurseries where Douglas-fir (Pseudotsuga menziesii [Mirb.] Franco) is present. Douglas-fir needle midge (DFNM) causes discoloration and galls on the needles, thereby it affects the market value of the Christmas...
Resource Type:: Masters Thesis
Full Text:: : ______________________________________________________ David C. Shaw Douglas-fir needle midge (Contarinia pseudotsugae, Diptera

Reproductive and litter performance of sows mated during lactation

Creator:: Walker, Calvin
Abstract:: An experiment was conducted with 51 control and 51 experimental confinement- managed purebred Yorkshire sows of various parities to (1) determine whether confinement-managed sows during lactation would exhibit estrus, mate, and conceive as a consequence of a daily regimen of a short period of separation from their litters, mixing sows...
Resource Type:: Masters Thesis
Full Text:: . To my major professor, Dr. David C. England, for his counseling and guidance throughout my Master of

Litter productivity at first and second parity by gilts mated at different weights at first or second estrus

Creator:: Tachasirinugune, Sommai
Abstract:: Purebred Yorkshire gilts with weights ranging from 70 to 105 kilograms were moved from a total-confinement rearing unit to a total-confinement brood stock unit where approximately ten gilts per pen were mixed to provide new penmates. Each gilt was thus exposed to an unfamiliar environment and to foreign penmates along...
Resource Type:: Masters Thesis
Full Text:: appccRed acted for Privacy David C. Englan, Purebred Yorkshire gilts with weights ranging from 70 to 105

Transformation of Western Hemlock Tree Crowns by Dwarf Mistletoe

Creator:: Calkins, Stephen J.
Abstract:: Hemlock dwarf mistletoe (Arceuthobium tsugense subsp. tsugense) is an arboreal, hemiparasitic plant that principally parasitizes western hemlock (Tsuga heterophylla). Hemlock dwarf mistletoe exerts a profound influence on infected trees that can drastically change the structure of the tree crown due to reduced growth, top dieback, branch deformation and death, resulting...
Resource Type:: Masters Thesis
Full Text:: : _____________________________________________________________________ David C. Shaw Hemlock dwarf mistletoe (Arceuthobium tsugense subsp. tsugense) is an

Management techniques for induction and synchronization of estrus in prepuberal gilts in confinement

Creator:: Schiemann, Calvin Aloysius
Abstract:: At weights of 81.5-90.5 kg, 187 prepuberal crossbred gilts were subjected to specific environmental stimuli, for up to 17 days, to determine which stimuli or combinations of various ones would initiate onset of estrus in prepuberal gilts. The stimuli used were: movement to new building, mixing or non-mixing of gilts,...
Resource Type:: Masters Thesis
Full Text:: ;Redacted for Privacy David C. England, Professor of Animal Science At weights of 81.5-90.5 kg, 187

Exploring the lived experiences of rural college student transitions

Creator:: Ast, Karen M.
Abstract:: This study explores the lived experiences of first-year, rural, Oregon students in their initial entry to college. Through qualitative research involving one-on-one interviews with 10 participants, the author examines the transition of rural students into higher education, common experiences of rural students in their first term of college, and perceived...
Resource Type:: Masters Thesis
Full Text:: : _____________________________________________________________________________ David C. Kovac This study explores the lived experiences of first-year, rural, Oregon

Linking soluble C to microbial community composition and dynamics during decomposition of ¹³C-labeled ryegrass

Creator:: McMahon, Shawna K.
Abstract:: Ryegrass residue consists of three main C fractions: readily available soluble C, intermediately available cellulose and hemicellulose, and slowly available lignin. Changes in chemical composition during decomposition influence rate of degradation as well as composition of the microbial community involved. Use of ¹³C-labeled plant material coupled with analysis of phospholipid...
Resource Type:: Masters Thesis
Full Text:: of Master of Science in Soil Science presented on January 13, 2004. Title: Linking Soluble C to

Response of market hogs to periodic changes among nutritionally similar rations

Creator:: Hamstreet, John Leslie, 1940-
Abstract:: An experiment was conducted during the period November 1967 to November 1968 at Oregon State University (OSU) and the Umatilla Branch Experiment Station (BES) at Hermiston, two trials at each location, to answer several questions: (1) could comparable rations for swine be formulated by a computer on a least-cost basis;...
Resource Type:: Masters Thesis
Full Text:: MARKET HOGS TO PERIODIC CHANGES AMONG NUTRITIONALLY SIMILAR RATIONS Abstract approved: David C

Genetic Characterization and Bioclimatic Modeling of the Three Varieties of Leptographium wageneri (Cause of Black Stain Root Disease) in the Western USA

Creator:: Choi, Daram
Abstract:: Black stain root disease (BSRD) is a vascular wilt disease of conifers caused by three varieties of the native, insect-vectored fungal pathogen, Leptographium wageneri (L. wageneri var. wageneri, L. wageneri var. ponderosum, and L. wageneri var. pseudotsugae). Although morphological, physiological, and ecological characteristics differ among the three varieties of L....
Resource Type:: Masters Thesis
Full Text:: : ______________________________________________________ David C. Shaw Black stain root disease (BSRD) is a vascular wilt disease of conifers

Genetic-protein level interaction in growth and carcass traits of market hogs

Creator:: Boyd, Steven Michael
Abstract:: Progeny from three sires of differing genetic background were divided within litters by sex and placed on either a 15 or 19% protein ration. The test period began when the experimental animals weighed 60 pounds and continued until they were slaughtered at 225 pounds. This test period was divided into...
Resource Type:: Masters Thesis
Full Text:: INTERACTION IN GROWTH AND CARCASS TRAITS ()F MARKET HOGS Redacted for PrivacyAbstract approve David C ngland

The distribution of planktonic diatoms in Yaquina Estuary, Oregon

Creator:: Karentz, Deneb
Resource Type:: Masters Thesis
Full Text:: IN YAQUINA ESTUARY, OREGON Abstract approved: C. David McIntire Plankton samples were obtained

Genetic and environmental influences upon litter size and variation of birth weights in Berkshire swine

Creator:: Chapman, Verne Merrill
Abstract:: Litter site and birth weight data compiled from the farrowing records of 275 litters out of 109 purebred Berkshire sows of the Oregon State University swine herd during the years 1953 to 1960 inclusive were used in this study. Genetic and environmental factors influencing four components of reproductive performance, namely,...
Resource Type:: Masters Thesis
Full Text:: ACKNOWLEDGEMENTS The writer wishes to express his sincere thanks and gratitude to Dr. David C. England

Effects of grazing and nitrogen enrichment on the taxonomic structure of periphyton assemblages in lotic ecosystems

Creator:: Lundberg, Chris H.
Resource Type:: Masters Thesis
Full Text:: in Lotic Ecosystems. Abstract approved: C. David McIntire The taxonomic composition of benthic

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

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:: THREE IN VITRO TECHNIQUES USED TO PREDICT FORAGE DIGESTIBILITY by DAVID GINGLES McNEILL A THESIS

The effects of tritiated seawater on development of the goose barnacle Pollicipes polymerus

Creator:: Abbott, David Thomas
Abstract:: The purpose of this study was to determine the effects of tritiated seawater (HTO) on selected developmental stages of the goose barnacle, Pollicipes polymerus. Barnacle embryos were cultured in Millipore cytology monitors with HTO concentrations of 0, 10⁻⁵, 10⁻³, 10⁻¹, and 10¹ μCi/ml. After 22 days, hatching was complete and...
Resource Type:: Masters Thesis
Full Text:: for David Thomas Abbott ACKNOWLEDGEMENTS I would like to thank Dr. Michael C. Mix, Assistant

The design, use and implementation of digital radiation detection and measurement equipment for the purpose of distance instruction

Creator:: Vasquez, David C.
Abstract:: Digital Instrumentation and Detection is becoming the future of radiation detection and measurement. Computers are able to perform digitally what before would have taken an extensive array of analog equipment. The art of teaching radiation detection and measurement is following this same pattern of a shift from purely analog to...
Resource Type:: Masters Thesis
Full Text:: ABSTRACT ON THE THESIS OF David C. Vasquez for the degree of Master of Science in Radiation Health

Stem sapwood water transport and storage strategies in three conifers from contrasting climates

Creator:: Barnard, David M.
Abstract:: The state of Oregon has two distinct climate types bisected by the crest of the Cascade Mountain range. The western side of the Cascades experiences high levels of precipitation and mild temperatures due to the maritime influence of the Pacific Ocean, while the eastern side lies in the rain shadow...
Resource Type:: Masters Thesis
Full Text:: from contrasting habitats David M. Barnard, Frederick C. Meinzer, Barbara Lachenbruch

Environmental influences on monoterpenes and phenolics of Mentha piperita

Creator:: Yao, Cheng C.
Abstract:: Vegetatively propagated peppermint (Mentha piperita L., cv. Black Mitcham) was used to determine the effects of night temperatures (8°C vs 25°C) on the plant growth in terms of fresh weight and leaf area, and on metabolite contents. The plants were sampled after 14 days, 21 days and 28 days in...
Resource Type:: Masters Thesis
Full Text:: Mentha piperita AN ABSTRACT OF THE THESIS OF Cheng C. Yao for the degree of Master of Science in

Tree Vigor Response and Competitive Zone Density in Mature Ponderosa Pine

Creator:: Shaw, Randi C.
Abstract:: This study explored the relationship of mature ponderosa pine (Pinus ponderosa Dougl. ex Laws) tree vigor and competitive zone density following thinning and fuel reduction treatments. Competitive zone density (CZD) was defined as the total tree basal area (m²/ha) surrounding a given ponderosa pine tree within a 10m fixed radius...
Resource Type:: Masters Thesis
Full Text:: . Anderson David C. Shaw This study explored the relationship of mature ponderosa pine (Pinus

Geology of the northwest quarter Alvord Lake Three quadrangle, Oregon

Creator:: Johnson, George Daniel
Resource Type:: Masters Thesis

Climate-growth relationships of western juniper and ponderosa pine at the pine-woodland ecotone in southern Oregon

Creator:: Knutson, Kevin C.
Abstract:: Pinyon-juniper woodlands throughout the western U.S. have expanded rapidly following European settlement during the late 19th century. In central and eastern Oregon, western juniper (Juniperus occidentalis var. occidentalis Hook.) encroachment has been previously documented in the sagebrush steppe and upper elevation aspen communities. While these vegetation changes and dynamics have...
Resource Type:: Masters Thesis
Full Text:: OF Kevin C. Knutson for the degree of Master of Science in Forest Science presented on

Interactions between near-urban forest management and recreation : a pre- and post-harvest survey

Creator:: Balfour, Richard C. D.
Abstract:: Forest management has been influenced by many social and political changes, and one of the most prominent is the increasing urbanization of neighboring lands. As a result, forests once relatively far removed from urban areas now share boundaries with residential developments, and receive increasing pressure to provide recreation and other...
Resource Type:: Masters Thesis
Full Text:: Recreation: A Pre- and Post-harvest Survey by Richard C. D. Balfour AN ABSTRACT OF THE THESIS OF

Anti-inflammatory and Antioxidant Potential of Alaska Pollock Milt and Roe Hydrolysates

Creator:: Kemp, David C.
Abstract:: Ample research has demonstrated the largely untapped potential of bioactive peptides (BAPs) for treating systematic chronic inflammation (SCI). Protein hydrolysates are the mixture of peptides resulting from the hydrolytic breakdown of a protein. Numerous hydrolysates contain BAPs and exert beneficial effects in both in vitro and in vivo models. In...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF David Kemp for the

Energy resource conservation in new large power plants

Creator:: King, David C.
Abstract:: This thesis evaluates new, large power generating plants of the various types expected to be practicable in the time span of the next 50 years. By using thermodynamic principles, the plants are evaluated on the basis of conservation of energy; the basic assumption is that the best policy is the...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF David C King for the degree of Master of Science in Mechanical

Relationships of green-tree retention following timber harvest to forest growth and species composition in the western Cascade Mountains

Creator:: Rose, Coulter R.
Abstract:: National Forest management in the Pacific Northwest is shifting from a focus on commodity production to ecosystem management, in which the health of the entire forest ecosystem is considered, rather than that of a few key species. Ecosystem management includes retention of some live trees following timber harvest (green-tree retention)...
Resource Type:: Masters Thesis
Full Text:: contributions to me and to this thesis. My thanks to my committee members: Bruce McCune, C. David McIntire, and

Pathogenicity of Phytophthora species from Oregon waterways

Creator:: Navarro, Sarah M.
Abstract:: Described as one of the most destructive pathogens of agricultural crops and forest trees, Phytophthora is a genus of microorganisms containing over 100 known species. Phytophthora alni has caused collar and root disease in alders throughout Europe and a form of the species has recently been isolated in North America....
Resource Type:: Masters Thesis
Full Text:: his sense of humor, I am ever so thankful for. My committee members Jeff Stone, Ken Johnson, and

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

Historical land use and its impact on Oak Creek, Oregon

Creator:: Yamaguchi, Keiko, 1964-
Abstract:: The purposes of this study were:1) to review the land use history of Oak Creek watershed since European settlement. And 2) to consider the human-caused impacts and their effects associated with different land uses. The study area was classified into three land use patterns: residential,agricultural, and forested areas.Since the European...
Resource Type:: Masters Thesis
Full Text:: : Historical Land Use and Its Impact on Oak Creek, Oregon. Abstract approved: Redacted for Privacy John C

gm/ID Design Techniques for Low-power High-performance CMOS Analog Integrated Circuits

Creator:: Aueamnuay, Chaiyanut
Abstract:: The gm/ID-based design of analog integrated circuits introduced in 1996 employs an empirical transistor sizing methodology using SPICE-generated lookup tables that enables good agreement between simulations and specifications. This thesis introduces a new SPICE lookup table that extends the gm/ID approach to the Miller pole-splitting frequency compensation of the classical...
Resource Type:: Masters Thesis
Full Text:: Circuits Abstract approved: ______________________________________________________ David J

The three-pole, two-zero approximation of a maximally flat time-delay network with constant input resistance

Creator:: Johnson, Robert Michael
Abstract:: The derivation of coefficients for the transfer functions of maximally flat time-delay networks generally begins from an infinite series approximation of the ideal transfer function. This thesis presents two alternative methods that are particularly suited to cases involving an unequal number of poles and zeroes in the transfer function. The...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Robert Michael Johnson fQr the

Morphology, genesis, and classification of soils forming in recent age tephra deposits from Mt. St. Helens volcano

Creator:: Johnson, Mark E.
Abstract:: The morphology, genesis, and classification of soils forming in multiple tephra deposits of recent age from Mt. St. Helens volcano in southwestern Washington Cascade Mountains was studied. Soils which occupied well drained and poorly drained positions on the landscape were characterized according to their morphology and the results of analyses...
Resource Type:: Masters Thesis
Full Text:: . Johnson for the degree of Master of Science in Soil Science presented on (,) A rryi Title: MORPHOLOGY

Staphylococci as microbiological indicators to estimate the quality of swimming pool waters

Creator:: Rivera, Joseph Bechaida T.
Abstract:: Previous studies have indicated that staphylococci have potential for use as indicators of water quality in swimming pool and other recreational waters. However, these organisms are not yet included in the official guidelines for recreational water quality promulgated by health authorities. The purpose of this study is to determine water...
Resource Type:: Masters Thesis
Full Text:: Privacy Abstract approved: David C. Lawson kedacted for Privacy Tilahun Adera Previous studies have

The influence of environmental attributes on temporal and structural dynamics of western juniper woodland development and associated fuel loading characteristics

Creator:: Johnson, Dustin D.
Abstract:: Since European American settlement of the Intermountain Region, dramatic changes in vegetation composition and structure have occurred in the sagebrush steppe ecosystem. Western juniper (Juniperus occidentalis spp. occidentalis Vasek), although indigenous to the Intermountain Region, has increased since the late 1800s. Considerable work has been done documenting juniper woodland expansion...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Dustin D. Johnson for the degree

Systematics of the genus Torrubiella

Creator:: Johnson, Desiree M.
Abstract:: Torrubiella is a genus of entomopathogenic fungi in the Clavicipitaceae (Ascomycota). Species of the genus produce superficial perithecia on a loose mat of hyphae that forms directly on the host. The genus is estimated to contain about 70 species. Torrubiella is hypothesized to be a close relative of Cordyceps because...
Resource Type:: Masters Thesis
Full Text:: M. Johnson for the degree of Master of Science in Botany and Plant Pathology presented on March 20

Stress at deformations beyond the elastic limit for compression perpendicular to the grain in hem-fir

Creator:: McLaughlin, Edward J.
Abstract:: Allowable stresses in compression perpendicular to the grain (C-perp) have been too conservative for most structural uses. This study develops stress data for deformations beyond the proportional limit (PL), up to 0.1 inch for hem-fir. Fifteen boards from four western states were cut into small specimens representing three ring angle...
Resource Type:: Masters Thesis
Full Text:: contorta Dougl.) in light frame construction. Johnson and McLaughlin (8) tested C-perp in hem-fir for the

The Ibis, journal of the British Ornithologists' Union : a pre-synthesis portrait

Creator:: Johnson, Kristin Renee
Abstract:: In 1959 the British Ornithological journal, The Ibis, published a centenary commemorative volume on the history of ornithology in Britain. Over the previous few decades, the contributors to this volume had helped focus the attention of ornithologists on the methods, priorities, and problems of modem biology, specifically the theory ofevolution...
Resource Type:: Masters Thesis
Full Text:: -Synthesis Portrait AN ABSTRACT OF THE THESIS OF Kristin Renee Johnson for the degree of Master of

A bioeconomic analysis of altering instream flows anadromous fish production and competing demands for water in the John Day River basin, Oregon

Creator:: Johnson, Neal S.
Abstract:: The growing demand for water in the arid regions of the West increases the need for optimal allocation of water among competing uses. An efficient allocation of water between instream and out-of-stream uses has been impeded by institutional constraints and the scarcity of information regarding instream flow benefits. The objectives...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Neal S. Johnson for the degree of

Value and evaluation : a case study of interdisciplinary green infrastructure continuing professional education trainings

Creator:: Johnson, Christine M.
Abstract:: The practice of green infrastructure is synonymous with collaborative partnerships. Expertise from engineers, land care professionals, planners, and natural resource consultants are often required for successful project implementation. Traditionally, these professionals perform their responsibilities in their disciplinary “silos,” but this evolving area of sustainable development is creating a demand for...
Resource Type:: Masters Thesis
Full Text:: Christine M. Johnson for the degree of Master of Science in Forest Ecosystems and Society presented on May

Population Ecology of the Mariana Swiftlet (Aerodramus bartschi) on O'ahu, Hawaiian Islands

Creator:: Johnson, Nathan Christopher
Abstract:: The Mariana Swiftlet (Aerodramus bartschi) (Aves: Apodidae) is endemic to the Mariana Islands, where it currently occurs on Saipan, Aguiguan, and Guam. An introduced population of Mariana Swiftlets is also present on O'ahu in the Hawaiian Islands. Sparing interference with the endangered population in the Marianas, the introduced, surrogate population...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Nathan Christopher Johnson for the degree of Master of Science in

The effect of forest stand thinning on selected strength and pulp-ing characteristics of Douglas-fir

Creator:: Johnson, Donna A.
Abstract:: The purpose of this study was to determine if amount and kind of thinning had an effect on wood specific gravity, modulus of rupture, modulus of elasticity, growth rate, or pulp yield and kappa number. The study involved 24 1/5-acre plots, three plots in each of eight thinning treatments. The...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Donna A. Johnson for the degree of

Shear Moduli Estimates of Thermoplastic Natural Fiber Composites via Off-Axis Tensile Tests

Creator:: Johnson, Natalie N.
Abstract:: Fiber reinforced polymers have gained considerable attention due to their wide range of applications, leading to significative concerns for end-of-life recyclability and disposal. Natural fibers and recycled carbon fibers, coupled with thermoplastic matrices can provide a sustainable and environmentally friendly alternative to traditional materials. This study focused on experimental materials...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Natalie Johnson for the

The effects of functional isometric and dynamic training programs on dynamic and static strength

Creator:: Johnson, Ronald Myls
Abstract:: The purpose of this study was to compare two progressive weight training programs-- functional isometric and dynamic-- to determine their effects on dynamic and static strength. Sixteen health male college subjects were randomly divided into two training groups. Group A utilized the progressive dynamic weigh training program, and group B...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF RONALD MYLS JOHNSON for the

The American species of the genus Ellopia (Lepidoptera) with special reference to Ellopia somniaria Hulst

Creator:: Johnson, Philip Cornwell
Resource Type:: Masters Thesis
Full Text:: Degree of LASTER OF 3CIECE by Philip C. Johnson Lay, 1931 APPROVED: Redacted for privacy

A study of the economic status of the common woodpeckers in relation to Oregon horticulture

Creator:: Neff, Johnson Andrew
Resource Type:: Masters Thesis
Full Text:: WOODPSCCfiRS I1J HELATIOH SO OftSGOH HOIiTICULTUKS Submitted to th# 0 H 8 (J 0 I AORICULTUHAL C 0 L

An analysis of religious activities at Oregon State College

Creator:: Johnson, Leone Sands
Resource Type:: Masters Thesis
Full Text:: College AN ANALYSIS OF RELIGIOUS ACTIVITIES AT OREGON STATE COLLEGE by LEONE SANDS JOHNSON A THESIS

Clothing related to aspirations for status among lower middle class working women

Creator:: Johnson, Elaine Kay
Abstract:: The aim of the study was to explore the possibility of relationships existing between social aspiration and the use of clothing for prestige among lower middle class working women. A review of the literature dealing with aspirations among various groups indicated that more aspiring individuals generally used clothing for prestige...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Elaine Kav Johnson (Narne

PC++ : an extension of C++ for parallel programming

Creator:: Bae, Myungmun
Abstract:: Understanding of techniques that can be used to develop software for various parallel machines has not fully matched the dramatic progress in hardware in recent years. Most parallel programming techniques have been closely tied to specific hardware. Different machines have different primitives and architectures. Programming and porting an application with...
Resource Type:: Capstone Project
Full Text:: ) PC++: An Extension of c++ for Parallel Programming

A comparison of two different balance programs

Creator:: Eisenhard, Jordyn
Abstract:: There is limited knowledge regarding differential training as it relates to balance. The purpose of this study was to compare the performance and retention of a differential training balance program and a traditional balance program. Thirty-three Division I soccer athletes volunteered to participate and 29 completed the study. Participants were...
Resource Type:: Masters Thesis
Full Text:: . Johnson There is limited knowledge regarding differential training as it relates to balance. The

An evaluation of the effectiveness of a nutrition education workshop for home economics teachers

Creator:: Stark, Christina May
Abstract:: The effectiveness of a three-hour nutrition education workshop for home economics teachers given in 18 locations in Oregon was evaluated based on responses from 138 teachers. Changes in knowledge of and attitude toward four nutrition topics (fast foods, vegetarianism, weight control, and food exchanges) were measured using questionnaires completed at...
Resource Type:: Masters Thesis
Full Text:: approved: 0 Elizabeth Johnson The effectiveness of a three-hour nutrition education workshop for

A study of two years autopsies performed at the poultry pathological laboratory, Oregon Agricultural Experiment Station

Creator:: Dickinson, E. M. (Ernest Milton), 1905-
Resource Type:: Masters Thesis
Full Text:: Diagnostic procedui'e. The diagnosis of coccidiosis was ccomplished with the aid of the microscope. Johnson

Modeling of the Peru-Chile trench from wide-angle reflection profiles

Creator:: Goebel, Vaughn
Abstract:: A proposed modeling technique that yields a best fit to observed wide-angle reflection profiles incorporates (1) the use of migrated vertical reflection profiles to provide topographic control, (2) ray tracing to produce theoretical wide-angle reflection profiles for hypothetical crustal sections, and (3) the iterative adjustment of crustal layer dip, thickness...
Resource Type:: Masters Thesis
Full Text:: Johnson) A proposed modeling technique thatyields a best fit to observed wide-angle reflection profiles

The incidence and duration of breast feeding among women in the greater metropolitan area of Portland, Oregon

Creator:: Marshall, Joyce M.
Abstract:: The incidence and duration of breast feeding were determined via telephone questionnaires from a sample of 95 women who delivered healthy infants during the month of September 1982, in the greater metropolitan area of Portland, Oregon. This sample was limited in that the women were married, predominately white, over 25...
Resource Type:: Masters Thesis
Full Text:: approved: J Dr. Elizabeth Johnson The incidence and duration of breast feeding were determined

Interrelationships among attitudes toward and practice of nutrition and health of prepaid health plan members

Creator:: Daoust, Jan Morgan
Abstract:: Interrelationships among attitudes toward and practice of nutrition and health were determined from results of 335 responses to a survey mailed to members of a prepaid health plan in Portland, Oregon, in the Spring of 1981. The scales used to test attitudes included Subjective Index of General Well-Being, Health Locus...
Resource Type:: Masters Thesis
Full Text:: questionnaire, format and design. I thank Dr. Elizabeth Johnson, my major professor, for her advice and

Vitamin E with the addition of flaxseed to create designer eggs

Creator:: Johnson, Rebecca C.
Abstract:: Two experiments were conducted to determine the effect of various levels of vitamin E on egg yolk. A diet of corn-flax-soybean meal was fed to layers and α-tocopherol content in eggs, egg production, and egg quality were evaluated. In experiment 2, vitamin E toxicity was also determined. In experiment 1,...
Resource Type:: Masters Thesis
Full Text:: eggs AN ABSTRACT OF THE THESIS OF Rebecca C. Johnson for the degree of Master of Science in Poultry

Evaluation of a Rhizobium meliloti transconjugant for increased nodulation and biological nitrogen fixation in alfalfa

Creator:: Mao, Meiyu
Abstract:: Agrobacterium rhizogenes has been shown to cause root proliferation and increased water use efficiency in certain woody dicots. Root proliferation may be desirable in herbaceous legumes as a means of increasing potential sites for infection by Rhizobium species and subsequent nodulation and nitrogen fixation. Thus, A. rhizogenes was used to...
Resource Type:: Masters Thesis
Full Text:: Alfalfa Redacted for Privacy Abstract approved: Dr. David B. Hannaway Agrobacterium rhizogenes has been

Residue management and yield characteristics of fine fescue seed crops

Creator:: Schumacher, Derek David
Abstract:: Chewings fescue [Festuca rubra L. subsp. fallax (Thuill.) Nyman] is a desired turfgrass with dense sod forming capabilities and superior shade tolerance. Thermal residue management (open-field burning) has traditionally been used to remove post-harvest residue and maintain seed yield over the life of the stand. However, alternative non-thermal residue management...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Derek David Schumacher for the

The adsorption of water by cements

Creator:: Johnson, Raymond Hawley, 1905-
Resource Type:: Masters Thesis
Full Text:: of the requirenents for the Degree of LIASTER OF SCIENCE by Raymond Hawley Johnson LIay

Effect of iron on biological control of fire blight by Pseudomonas fluorescens A506

Creator:: Temple, Todd N.
Abstract:: Competitive exclusion has been the mechanism hypothesized to account for the biological control of fire blight disease of pear and apple by the bacterium Pseudomonas fluorescens A506 (A506). Recent laboratory assays demonstrated, however, that A506 produces an antibiotic that is toxic to the fire blight pathogen, Erwinia amylovora, when cultured...
Resource Type:: Masters Thesis
Full Text:: Control of Fire Blight by Pseudomonasfluorescens A506. Abstrard: Kenneth B. Johnson Virginia 0

The use of ơ15N and ơ¹³C to analyze food webs and identify source-sink relationships in riparian canopy vegetation of the Oregon Coast Range

Creator:: Scott, Emily E.
Abstract:: In the Coast Range of western Oregon, some natural resource managers are converting red alder-dominated riparian areas to conifers to increase the future source of in-stream large wood for salmonid habitat. However, studies in Alaska have shown red alder-dominated riparian areas support greater invertebrate biomass compared to conifer-dominated areas. In...
Resource Type:: Masters Thesis

Role of inoculum sources of Botrytis cinerea in the epidemiology of gray mold of snap beans

Creator:: Johnson, Kenneth Bjorn
Abstract:: Spore dispersal gradients and pod disease gradients from point inoculum sources of Botrytis cinerea were measured over time in two snap bean field experiments. Laboratory grown inoculum was placed at ground level in a 30 x 30 cm square at bloom initiation and removed at full bloom. Dispersal of inoculum,...
Resource Type:: Masters Thesis
Full Text:: epidemiology of gray mold of snap beans AN ABSTRACT OF THE THESIS OF Kenneth Bjorn Johnson for the degree of

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