Index Catalog // ScholarsArchive@OSU

Linking phylogenetic identity and biogeochemical function of uncultivated marine microbes with novel mass spectrometry techniques

Creator:: Bryson, Samuel J.
Abstract:: The combined activities of diverse heterotrophic marine microorganisms significantly shape global biogeochemical cycles, but models of these activities are currently limited to aggregate microbial community processes, and it remains unclear how community structure and the functional roles of specific microbial taxa should be integrated into these models. Therefore, understanding the...
Resource Type:: Dissertation
Full Text:: : ______________________________________________________ Ryan S. Mueller The combined activities of diverse heterotrophic marine microorganisms

Genetic diversity and herbicide resistance in annual bluegrass (Poa annua L.)

Creator:: Mengistu, Lemma W.
Resource Type:: Dissertation
Full Text:: Herbicide Resistance in Annual Bluegrass (Poa annua L.). Abstract approved: George W. Mueller-Warrant We

Differential sensitivity of Italian ryegrass and rice cultivars to fenoxaprop

Creator:: Hassan, Gul
Resource Type:: Dissertation
Full Text:: and Rice Cultivars to Fenoxaprop Redacted for Privacy-Abstract Approved:,Z Gere W. Mueller-Warrant

Rattail fescue (Vulpia myuros) control in Italian ryegrass (Lolium multiflorum) grown for seed

Creator:: Reyes, Carlos C.
Abstract:: Italian ryegrass growth and production from positionally selective applications and sublethal rates of a nonselective herbicide were compared to growth and production when treated with diuron applied preemergence as a broadcast treatment and safened by activated carbon applied over the crop row. In the positionally selective treatments, herbicide spray was...
Resource Type:: Dissertation
Full Text:: G. W. Mueller-Warrant Italian ryegrass growth and production from positionally selective

Comparative genomics of Vibrio and characterizing microbial communities at a shellfish hatchery

Creator:: Delgado, Hanna
Abstract:: Vibrio bacteria are commonly found in freshwater, marine, and estuarine environments. Members of this genus can exist in commensal relationships with marine animals or as planktonic bacteria, however, they are well known for their roles as pathogens towards humans and animals. In this dissertation, I investigated aspects of host-bacteria relationships...
Resource Type:: Dissertation
Full Text:: Ryan S. Mueller Vibrio bacteria are commonly found in freshwater, marine, and estuarine

The Influence of Microbial Communities on Spatiotemporal Elemental Cycling in Coastal Margins Revealed by Community- and Population-level Genomics and Proteomics

Creator:: Kieft, Brandon P.
Abstract:: Biotic and abiotic processes at continent-ocean interfaces cycle a disproportionate mass of carbon and nutrients relative to their global surface area, and microbial activity is a principal determinant of organic and inorganic matter flux in these transition zones. Most studies using modern high-throughput ‘omics techniques to link microorganisms with costal...
Resource Type:: Dissertation
Full Text:: Abstract approved: ______________________________________________________ Ryan S. Mueller Biotic

Effects of Anthropogenic Stressors on Seagrass and Coral Microbiomes

Creator:: Wang, Lu
Abstract:: Seagrasses and coral reefs play important roles in nutrient cycling, coastal protection, and maintaining marine biodiversity. However, these coastal marine organisms are declining globally due to anthropogenic stressors, such as rising ocean temperatures, ocean acidification, and eutrophication. These organisms live in close association with their microbiomes, which can be beneficial...
Resource Type:: Dissertation
Full Text:: . Mueller Seagrasses and coral reefs play important roles in nutrient cycling, coastal protection

The effects of thermodynamic parameterizations, ice shelf geometry, and tides on modeled basal melting of Weddell Sea ice shelves

Creator:: Mueller, Rachael D.
Abstract:: Antarctic Ice Sheet mass balance and, hence, sea level change is affected by the floating extensions of outlet glaciers and ice streams that take up about 44% of the coastline (Drewry et al., 1982) and are referred to as "ice shelves". Ice sheet mass loss accelerates when these ice shelves...
Resource Type:: Dissertation
Full Text:: AN ABSTRACT OF THE DISSERTATION OF Rachael D. Mueller for the

The influence of phytoplankton on ocean color spectra

Creator:: Mueller, James L.
Resource Type:: Dissertation
Full Text:: AN ABSTRACT OF THE THESIS OF JAMES LOWELL MUELLER for the

Advances in Freshwater Cyanobacterial Genomics

Creator:: Brown, Nathaniel M.
Abstract:: Limnology is undergoing a transition to high-throughput -omic analysis of freshwater bacterial communities. An important first step in making the transition is to characterize several genomes that can be used as references to guide metagenome assembly and analysis. Here I characterize four new freshwater cyanobacterial genomes, a pair of lake...
Resource Type:: Dissertation
Full Text:: Freshwater Cyanobacterial Genomics Abstract approved: Theo W. Dreher Limnology is undergoing a transition

Comparative Genomics of Freshwater Bloom-Forming Cyanobacteria and Associated Organisms

Creator:: Driscoll, Connor B.
Abstract:: The advent of improved DNA sequencing technologies has allowed the analysis of various microbial communities. Bloom-forming freshwater cyanobacteria can produce toxins and taste-and-odor compounds that can negatively affect drinking water supplies. Here, I have employed second- and third-generation sequencing technologies to characterize bloom-forming freshwater cyanobacterial genomes and their associated heterotrophic...
Resource Type:: Dissertation
Full Text:: Genomics of Freshwater Bloom-Forming Cyanobacteria and Associated Organisms Abstract approved: Theo W

Impact of Igneous Mineralogy on the Composition and Metabolic Function of Microbial Biofilms in a Thermal Suboceanic Crustal Aquifer

Creator:: Smith, Amy R.
Abstract:: Igneous oceanic crust encompasses ~60% of Earth’s surface and is composed of basalt glass and mafic, ultramafic, and felsic minerals. A vast marine aquifer lies within the crust, exchanging geochemically altered fluids with seawater from the overlying ocean at ridge crests, flanks, seamounts, and outcrops where permeable crust is exposed....
Resource Type:: Dissertation
Full Text:: helping me become a better scientist. Thank you to Drs. Staci Simonich, Adam Schultz, and Ryan Mueller

ALS-inhibitor resistant downy brome (Bromus tectorum L.) biotypes in Oregon : Mechanism of resistance, fitness, and competition

Creator:: Park, Kee-Woong
Abstract:: Understanding the mechanism of resistance, relative fitness and competitiveness of herbicide resistant biotypes is important to predict population dynamics and to establish resistance management strategies. This study was conducted to determine the level of resistance to acetolactate synthase (ALS) inhibitors and the mechanism of resistance of ALS-inhibitor resistant downy brome...
Resource Type:: Dissertation
Full Text:: . George W. Mueller-Warrant, Dr. Daniel A. Ball, Dr. Annie Qu and Dr. Jack Stang for serving on my

Consider the community : developing predictive linkages between community structure and performance in microbial fuel cells

Creator:: Lesnik, Keaton Larson
Abstract:: The complex, dynamic nature of microbial communities in both natural and engineered environments complicates the work of scientists and engineers who wish to channel microbial interactions for societal good. The successful management of these communities towards engineering goals is dependent on developing predictive linkages between community structure and functional outputs....
Resource Type:: Dissertation
Full Text:: Mueller for providing knowledge and guidance freely in and out of the classroom. I would like to thank

The inherent optical properties of the oceans: from closure to prediction

Creator:: Barnard, Andrew Heath
Abstract:: Precise in situ measurement of the spectral absorption and scattering coefficients in several regions has revealed patterns in the distribution of the inherent optical properties on spatial scales that were previously unobtainable. The precision of the measurements was found to be consistent and unbiased across a variety of oceanic regimes...
Resource Type:: Dissertation
Full Text:: Barth, Tim Cowles, Jim Mueller, Jim Yoder, and Bruce Rettig for serving as my thesis committee members

Multiple Stressors Drive Changes in Coral Microbiome Diversity and Composition Demonstrating the Role of a Bacterial Symbiont in Microbial Community Sensitivity and Resilience

Creator:: Maher, Rebecca L.
Abstract:: On coral reefs, disturbances rarely occur in isolation. Global stressors such as increasing seawater temperature often coincide with local stressors like nutrient pollution. In the face of increasing anthropogenic stress, corals can function as environmental sentinels, although little is known about how multiple stressors interact to disrupt their associated bacterial...
Resource Type:: Dissertation
Full Text:: much to my committee members, Dr. Ryan Mueller, Dr. Virginia Weis, Dr. Jeff Anderson, and Dr. Katie

Diversity and Activity of Microbial Extracellular Peptidases in Soil

Creator:: Nguyen, Trang T. H.
Abstract:: Soil nitrogen exists largely as organic matter, including plant liter, dead animal matter, and microbial necromass. About 90% of soil organic nitrogen is proteinaceous material that is too large for plants and microorganisms to assimilate directly. Protein depolymerization therefore plays a critical role in mobilizing this organic source of nitrogen,...
Resource Type:: Dissertation
Full Text:: all the collaboration and for being extremely helpful with all my work. Dr. Ryan Mueller taught me

Social Evolution and Regulatory Architecture of Pseudomonas aeruginosa Quorum Sensing

Creator:: Asfahl, Kyle L.
Abstract:: Cell-cell communication in bacteria is understood to facilitate the coordination of population-wide cooperative behavior in the form of concerted gene expression. The opportunistic pathogen Pseudomonas aeruginosa uses such a communication mechanism to regulate a large group of genes important to virulence strategies in this bacterium. This general mechanism of communication...
Resource Type:: Dissertation
Full Text:: members, Dr. Jeff Chang, Dr. Dan Rockey, Dr. Aleksandra Sikora, and Dr. Ryan Mueller, for the sharing of

Outliers: The Unusual Characteristics of Marine Carbon-Oxidizing Bacterial Cells Adapted to Oligotrophic Conditions

Creator:: Noell, Stephen E.
Abstract:: Oligotrophic bacteria are adapted to low nutrient concentrations. As most of the ocean is oligotrophic (low in nutrients), oligotrophic bacteria thrive in the ocean and make up the majority of planktonic cells. Because of this, oligotrophs are crucial to oceanic nutrient cycles. However, marine oligotrophic bacteria are dwarfed by their...
Resource Type:: Dissertation
Full Text:: . Paul Blakemore, Allen Milligan, Ryan Mueller, and Martin Schuster, for their helpful feedback, input

Quantities of prostaglandins in whole and extended bovine semen and their potential effect on fertility following insemination

Creator:: Jaeger, John Ralph
Abstract:: Our objectives were to determine 1) the concentration of prostaglandin F2α (PGF2α) in whole and extended bovine semen, 2) if concentrations of prostaglandins in extended bovine semen are correlated to fertility, and 3) if PGF2α administered at the time of artificial insemination would improve conception rate. Concentration of PGF2α tended...
Resource Type:: Dissertation
Full Text:: extended to Chad Mueller for agreeing to serve on my graduate committee for the final oral defense. My

Chemical and Genetic Investigations of Toxic Freshwater Cyanobacterial Blooms for Improved Monitoring and Understanding of Lake Ecology

Creator:: Collart, Lindsay P.
Abstract:: Toxin production by cyanobacterial harmful algal blooms (cyanoHABs) in freshwater systems has lasting ecological and human impacts. Nutrients, light availability, hydrology, and microbial community composition impact the frequency and intensity of toxic cyanoHABs. Climate change will exacerbate toxic cyanoHABs, making real time and predictive monitoring a vital tool for managing...
Resource Type:: Dissertation
Full Text:: analyses and contributed to writing; Ryan Mueller conducted bioinformatic analyses; Peter Schreder

Establishment and dynamics of methane-oxidizing microbial communities in marine sediments

Creator:: Klasek, Scott A.
Abstract:: Marine sediments are vast sources and reservoirs of methane, a potent greenhouse gas. Most of this methane is anaerobically oxidized by archaea before it can reach the overlying ocean, though the efficiency of this process often depends on methane fluxes and mechanisms of fluid transport. Anaerobic methanotrophic archaea, or ANME,...
Resource Type:: Dissertation
Full Text:: contagious. My other committee members, Ryan Mueller, Peter Bottomley, and Sandra Loesgen, have also

Tracking Bacterial and Viral Shifts in Three Organisms to Shed Light on the Complex Role of Microbes in Coral Reef Health

Creator:: Messyasz, Adriana
Abstract:: Stony corals are the ecosystem engineers of the vital, dynamic, and complex marine ecosystem known as coral reefs. Globally, coral reefs are undergoing degradation from multiple anthropogenic stressors. Coral reef organism holobionts, or the host along with its microbial components, are key to reef ecosystem success and functioning. Marine microbes...
Resource Type:: Dissertation
Full Text:: , Dr. Jerri Bartholomew, Dr. Andrew R. Thurber, Dr. Ryan S. Mueller, and Dr. Manoj Pastey. I also

The Social Interactions of Pseudomonas aeruginosa

Creator:: Smith, Parker
Abstract:: Pseudomonas aeruginosa is a ubiquitous environmental microbe, opportunistic pathogen, and a highly social organism. P. aeruginosa utilizes a wide array of cooperative behaviors to adapt to the environmental conditions around it. These behaviors include quorum sensing (QS), a form a cell-to-cell signaling that coordinates the expression of secreted products in...
Resource Type:: Dissertation
Full Text:: committee, Dr. Stephen Giovannoni, Dr. Ryan Mueller, Dr. Patrick De Leenheer, Dr. Frank Chaplen, and Dr

Horizontal Variability of Internal Waves and Tides: Seafloor Pressure Measurements and Idealized Resonant Modes

Creator:: Thomas, Jennifer A.
Abstract:: Internal waves and tides are a dominant source of current variability, and they are intermittent and hard to predict. Internal waves can have significant variability in alongshore structure. However, previous studies on internal waves have focused primarily on their cross-shore structure and propagation. For example, while alongshore-propagating superinertial internal tides...
Resource Type:: Dissertation
Full Text:: 42.2350◦ N, 70.5380◦ W, and map ranges from 41.78 to 42.68◦ N and 69.99 to 71.09◦ W. Stellwagen Bank is

How Do Parasites Infect Salmon? Comparative Transcriptomics Reveal Myxozoan Adaptations for Parasitism

Creator:: Americus, Benjamin
Abstract:: The phylum Cnidaria contains three main branches: Anthozoa (corals, sea anemones) Medusozoa (jellyfish, hydra), and Endocnidozoa. This latter branch is characterized by parasitism and contains the microscopic fish-parasites Myxozoa. Myxozoa are highly simplified, consisting of only a few cell types, however they have retained the nematocyst stinging cells and complex...
Resource Type:: Dissertation
Full Text:: you to my other committee members Dr. Ryan Mueller, Dr. Virginia Weis, and Dr. Lia Danelleshvilli

Growth and replacement patterns occuring among selected dominant species associated with plant succession on Douglas fir clear-cuts

Creator:: Robinson, Myles Canby
Abstract:: Growth and replacement patterns of four successionally important species occurring on Douglas fir clear-cuts were investigated from September 1964 to June 1967. The study was carried out on the Marys Peak watershed located near Corvallis, Oregon. Species used in the study include Holcus lanatus, Senecio jacobaea, Lotus crassifolius var. subglaber,...
Resource Type:: Dissertation
Full Text:: vegetation on south or north slopes or with the degree of slope. Mueller-Dornbois (1959), working on

Patterns in coastal marsh vegetation of the Juneau area, Alaska

Creator:: Stone, Catherine S.
Abstract:: A vegetation study was made of four coastal marshes near Juneau, Alaska. Results confirmed earlier studies' findings in southeast Alaska that communities or assemblages of species can be identified but from marsh to marsh these assemblages appear to have no consistent relationship to each other or to environmental "factors" such...
Resource Type:: Dissertation
Full Text:: Vegetation of the Juneau Area, Alaska. Abstract approved: Redacted for Privacy W. W. Chilcote A vegetation

Reflection factors of nickel in the infra-red at high temperatures

Creator:: Reid, William Curtis
Resource Type:: Dissertation
Full Text:: ACKNOWLEDGEMENT I wish to express my sincere thanks to Dr. w. Weniger whose guidance, criticism, and many hours

Site quality of western hemlock and chemical characteristics of some western Oregon andic soils

Creator:: Meurisse, Robert Thomas
Resource Type:: Dissertation
Full Text:: . Acknowledgements are also made to Drs. W. W. Chilcote, W. K. Ferrell, and H. E. En lows for their willingness to

Some aspects of the ecology of the bryophytes in the Three Sisters primitive area

Creator:: Pechanec, Anna Alice
Resource Type:: Dissertation
Full Text:: project to COII.pletion. the author e:;q,reaaea .apprect•tion. Special thanks are extended to Dr. W. W

Tablet shapes and in vitro evaluation of coated hydrophilic matrix tablets novel mupirocin formulations non-acidic enteric coating of omeprazole and novel hot-melt coating process

Creator:: Leung, Manshiu
Abstract:: This dissertation is comprised of four distinct formulation sections, which are described below: A novel solid dosage formulation was investigated for achieving zero-order drug release profile by combining tablet shape design and tablet membrane film coating. Verapmail (model drug) was compressed into hydrophilic matrix tablet cores of flat-faced and bi-convex...
Resource Type:: Dissertation
Full Text:: Omeprazole; and Novel Hot-Melt Coating Process. Abstract approved: James W This dissertation is comprised

Synthesis and structure of new oxides containing Bi(III)

Creator:: Radosavljevic, Ivana
Resource Type:: Dissertation
Full Text:: approved: Arthur W. Sleight The subject of the research project was exploratory synthesis and structural

Development and evaluation of an oral controlled release and a transdermal delivery system, for melatonin in human subjects

Creator:: Lee, Beom-jin
Resource Type:: Dissertation
Full Text:: System for Melatonin in Human Sublects. Abstract approved: James W. Ayres, Melatonin (MT

The determination and characterization of preferred orientation and the elastic anisotropy of rolled copper sheet

Creator:: Wilson, Dale
Abstract:: Relatively simple methods are developed for obtaining discreet orientation characterization of preferred orientation from x-ray diffraction-determined pole figure data. It is demonstrated how this information, along with the single crystal elastic constants, can be used to calculate Young's modulus as a function of sheet direction. Computer programs are developed for...
Resource Type:: Dissertation
Full Text:: ROLLED COPPER SHEET Abstract approve acted for Privacy Dougl W. Bainbridge, Ph. Relatively simple

Description of the plant communities and succession of the Oregon coast grasslands

Creator:: Ripley, James Douglas
Abstract:: In an effort to describe the plant communities and succession of the Oregon coastal grasslands, vegetation and environmental data were collected from 75 stands at 24 separate locations ranging from Cape Falcon in Tillamook County to Cape Ferrelo in Curry County. The vegetation data consisted of cover and frequency values...
Resource Type:: Dissertation
Full Text:: approved: William W. Chilcote In an effort to describe the plant communities and succession of the

Amino acid metabolism in Acetobacter suboxydans

Creator:: Kerwar, Suresh Shivarau
Abstract:: Nutritional studies with Acetobacter suboxydans indicated that when isoleucine, lysine, methionine, serine and arginine were singly omitted from a complete amino acid mixture, no growth was obtained. However, the organism could grow on single amino acids like glutamic acid, histidine and proline. No growth was obtained with ammonium sulfate as...
Resource Type:: Dissertation
Full Text:: Pearson ACKNOWLEDGEMENT The author expresses his gratitude to Dr. Leo W. Parks. Dr. Vernon H

Structured group psychotherapy for individuals with spinal cord injury

Creator:: Frank, Roger A.
Abstract:: This investigation was conducted to determine the effectiveness of Personal Achievement Skills (PAS), a structured group psychotherapy approach, on the productivity, social functioning, self-esteem, locus of control, and life satisfaction of individuals with traumatic spinal cord injury. Subjects for the study were recruited through disability advocacy organizations, state disability service...
Resource Type:: Dissertation
Full Text:: Cord Injury. Abstracted approved: Joseph W. Sendelbaugh This investigation was conducted to

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

Creator:: Kilbourn, Joan Priscilla Payne
Resource Type:: Dissertation
Full Text:: Cysteamine protects (802, p. 68) 18 . ', a 1 . ,. . w ' _ : . ti 1 r _ II. 1

Community Ecology and Population Genomics of Rhizopogon in the Madrean Sky Island Archipelago

Creator:: Piña Páez, Carolina G.
Abstract:: Anthropogenic induced climate change is predicted to alter distribution of existing plant populations. As plants migrate over space and time, populations often fragment and contract, affecting basic elements of population dynamics (e.g., population size, gene flow, genetic diversity, etc.). Little is known, however, how these impacts on plant species will...
Resource Type:: Dissertation
Full Text:: . Abstract approved: ______________________________________________________ Joseph W. Spatafora

The thermodynamics and molecular structure of some cyclic compounds

Creator:: McCullough, John P. (John Price)
Resource Type:: Dissertation
Full Text:: . The advice and criticism offered throughout t:e course of tiis work by Professor R. W. Spitzer are

A longitudinal study of selected changes in the perception of the university environment as held by students who participate in two forms of university governance

Creator:: Underwood, Arthur Grant
Abstract:: The purpose of this study was to investigate the change in perception of the university environment that occurred in students who participated in two forms of university governance at Oregon State University. Students who participated as members of joint student-faculty committees (university committees) were compared with members of all-student committees....
Resource Type:: Dissertation
Full Text:: UNIVERSITY GOVERNANCE Abstract approved: Redacted for Privacy Robert W. Chick The purpose of this study was

The study of pharmacokinetics in a clinical environment

Creator:: Tse, Sunny
Abstract:: This dissertation presents a research series demonstrating the use of pharmacokinetic modeling and simulations as tools to assess drug concentration and disposition in patient populations. For drugs requiring therapeutic drug monitoring, these tools are necessary to ensure patients are receiving a safe and effective dose of medication to address their...
Resource Type:: Dissertation
Full Text:: . Abstract approved: James W. Ayres This dissertation presents a research series

Systematics and phylogeny of Cordyceps and the Clavicipitaceae with emphasis on the evolution of host affiliation

Creator:: Sung, Gi-Ho
Abstract:: Cordyceps is a genus of perithecial ascomycetes. It includes over 400 species that are pathogens of arthropods and parasites of the truffle genus Elaphomyces. Based on the morphology of cylindrical asci, thickened ascus apices and filiform ascospores, it is classified in the Clavicipitaceae (Hypocreales), which also includes endophytes and epiphytes...
Resource Type:: Dissertation
Full Text:: Privacy Redacted for privacy CONTRIBUTION OF AUTHORS Dr. Joseph W. Spatafora was involved in the

Characterization of fungal and bacterial communities associated with mat-forming ectomycorrhizal fungi from old-growth stands in the H.J. Andrews Experimental Forest

Creator:: Hesse, Cedar N.
Abstract:: Mat-forming ectomycorrhizal (EcM) fungi represent a prevalent constituent of many temperate forest ecosystems and create dramatic changes in soil structure and chemistry. EcM mat soil have been shown to have increased microbial respiration rates and have been hypothesized to harbor unique assemblages of fungi and bacteria. The objectives of this...
Resource Type:: Dissertation
Full Text:: : _____________________________________________________________________ Joseph W. Spatafora Mat-forming ectomycorrhizal (EcM) fungi represent a prevalent

The structure and dynamics of old-growth Sitka spruce (Picea sitchensis) forest of the Oregon Coast Range

Creator:: Quaye, Eric Charles
Abstract:: The objectives of this study are to: 1) study the variations among stands of old-growth Sitka spruce forest located within a relatively restricted geographical area, 2) determine the relationship between species distribution, vegetational pattern, and such site factors as slope and aspect, and 3) ascertain the abruptness of phytosociological change...
Resource Type:: Dissertation
Full Text:: COAST RANGE Abstract approved: Redacted for privacy William W. Chilcote The objectives of this study

Inhibition of polyphenol oxidase by sulfur dioxide

Creator:: Sayavedra-Soto, Luis Alberto
Abstract:: Inhibition of polyphenol oxidase (PPO) by sulfur dioxide (SO₂) was studied using three different sources of PPO (banana, mushroom, and pear). Several methods to detect PPO activity were tested due to SO₂, interference in some of the assays. The method using 2-nitro-5-thiobenzoic acid (TNB) to react with the quinones was...
Resource Type:: Dissertation
Full Text:: . Title: Inhibition of Polyphenol Oxidase by Sulfur Dioxide. Abstract approved: r f Dr. Morris W

Assessing Apparent Effects on Survival and Movement of Desert Bighorn Sheep (Ovis canadensis nelsoni) Following a Pneumonia Outbreak

Creator:: Dekelaita, Daniella J.
Abstract:: In the western United States, bighorn sheep (Ovis canadensis) have suffered major die-offs in every state since the mid-1800s, and disease from domestic sheep (Ovis aries) has been a primary factor in these events. Beginning in the early 1900s, poly-factorial, poly-microbial pneumonia was identified as a major disease affecting bighorn...
Resource Type:: Dissertation
Full Text:: : ______________________________________________________ Clinton W. Epps In the western United States, bighorn sheep (Ovis canadensis) have

Detection and diagnosis of parameters change in linear system using time-frequency transformation

Creator:: Park, Dae-hyun
Abstract:: A systematic optimization of the Cohen class time-frequency transformation for detecting the parameters change is developed. The local moments approach to change detection is proposed and a general formula for the local moments is derived. The optimal kernel functions of the time-frequency transformation are determined based on the combined criteria...
Resource Type:: Dissertation
Full Text:: Transformation Abstract approved: Redacted for Privacy W. J. Kolodziej I A systematic optimization of the

The microstructure of marine sediments

Creator:: Stump, Arthur Darrell
Abstract:: The surface areas and pore size distributions of a series of terrigenous marine sediments were measured by gas adsorption. The sediment samples were taken from the continental terrace off the coast of Oregon near Newport. Sampling stations ranged up to 35 miles off shore between 44°20' and 45° north latitude....
Resource Type:: Dissertation
Full Text:: Dr. W. H . Slabaugh for his guidance, understanding and patience during the whole project as well

Defining roles for sterols in Saccharomyces cerevisiae : characterization of bulk membrane and high specificity sparking functions

Creator:: Rodriguez, Russell John
Abstract:: The ability of cholestanol to support growth of yeast sterol auxotrophs has been examined. Growth on this stanol was precluded unless minute quantities of ergosterol were available, a phenomenon designated sparking. The low levels of ergosterol were insufficient to support growth alone. The data indicate that cholestanol is fulfilling a...
Resource Type:: Dissertation
Full Text:: Specificity Sparking Functions Abstract approved: Redacted for privacy Leo W. Parks The ability of

A study of the lipids of Pseudomonas aeruginosa sensitive and resistant to chloramphenicol and quaternary ammonium compound

Creator:: Anderes, Eugene Armin
Abstract:: From a population of cells of Pseudomonas aeruginosa sensitive 33 parts per million (ppm) and 0.1 mg per ml of quaternary ammonium (QAC) and chloramphenicol respectively, pure strains resistant to 750 ppm and 50 mg per ml of these antibiotics were isolated. Lipids from the sensitive and resistant cells grown...
Resource Type:: Dissertation
Full Text:: TO CHLORAMPHENICOL AND QUATERNARY AMMONIUM COMPOUND Abstract approved: Redacted for Privacy W. E

Symbiosis in the Pacific Ring of Fire : evolutionary-biology of Rhizopogon subgenus Villosuli as mutualists of Pseudotsuga

Creator:: Mujic, Alija Bajro
Abstract:: Rhizopogon is a large genus of ectomycorrhizal (EM) fungi that grows in association with host trees of the family Pinaceae. We have conducted a series of studies investigating the ecology and evolutionary biology of the EM symbiosis shared between R. subgenus Villosuli and trees of the genus Pseudotsuga. Two members...
Resource Type:: Dissertation
Full Text:: : ______________________________________________________ Joseph W. Spatafora Rhizopogon is a large genus of ectomycorrhizal (EM) fungi that grows in

Kinetics of synthesis and degradation of chicken liver xanthine dehydrogenase

Creator:: Epstein, Arnold
Abstract:: The role of synthesis and degradation in controlling enzyme concentrations was studied. Concentrations of chloride and arginine were determined for blood and liver at various stages of development from the embryo to the 8 day old chicken. The chloride concentrations were used to obtain the volume of extracellular blood in...
Resource Type:: Dissertation
Full Text:: AND DEGRADATION OF CHICKEN LIVER XAN HINE DE YDROGENASE Abstract approved: Robert W. ewburgh The

Purification of strawberry polyphenol oxidase and its role in anthocyanin degradation

Creator:: Wesche-Ebeling, Pedro Alfredo E.
Abstract:: Polyphenol oxidase (PPO) from strawberries was purified, partially characterized, and used to study its role in the degradation of anthocyanin pigments. The extraction method included the use of a buffered solution containing the phenolic binders Polyclar AT and Amberlite XAD-4. Addition of Triton X-100 resulted in an increase of the...
Resource Type:: Dissertation
Full Text:: : .,.,_... Dr. Morris W. fmptgomery| Polyphenol oxidase (PPO) from strawberries was purified, partially

Systematics, phylogeny, and biogeography of the hysterangiales and related taxa (Phallomycetidae, Homobasidiomycetes)

Creator:: Hosaka, Kentaro
Abstract:: Monophyly of the gomphoid-phalloid clade was confirmed based on multigene phylogenetic analyses. Four major subclades (Hysterangiales, Geastrales, Gomphales and Phallales) were also demonstrated to be monophyletic. The interrelationships among the subclades were, however, not resolved, and alternative topologies could not be rejected statistically. Nonetheless, most analyses showed that the Hysterangiales...
Resource Type:: Dissertation
Full Text:: options for my travel itinerary. Drs. Greg Mueller, Rytas Vilgalys, Orson Miller and Darlene Judd

Structural distortions, phase transitions, and cation ordering in the perovskite and tungsten trioxide structures

Creator:: Woodward, Patrick M.
Abstract:: See pdf
Resource Type:: Dissertation
Full Text:: Chem. 43, 107. Hwang, H.Y., Cheong, S.-W., RadaeIIi, P.G., Marezio, M. & Batlogg, B. (1995a). Phys

Landscape-Level Approaches to Desert Bighorn Sheep (Ovis canadensis nelsoni) Conservation in a Changing Environment

Creator:: Creech, Tyler G.
Abstract:: Landscape characteristics can strongly influence demographic and genetic processes in wildlife populations. Climate change and human land use are causing many landscapes to change rapidly, and the effects on wildlife populations must be understood to properly manage these threats and design effective conservation strategies. In this dissertation, I explored the...
Resource Type:: Dissertation
Full Text:: : ______________________________________________________ Clinton W. Epps Landscape characteristics can strongly influence demographic and genetic

Synthesis and structure of new transition metal containing bismuth oxides

Creator:: Xun, Xiumei
Abstract:: Exploratory synthesis is the discovery of new compounds with interesting structures and properties. The subject of this thesis is exploratory synthesis of bismuth containing oxides. Bismuth containing oxides have many interesting properties, which are ionic conductivity, ferromagnetism, superconductivity, ferroelectricity, ferroelasticity and catalytic. These properties are closely related to their specific...
Resource Type:: Dissertation
Full Text:: Metal Containing Bismuth Oxides Abstract approved: Arthur W. Sleight Exploratory synthesis is the

Protein synthesis in Sarcophaga bullata

Creator:: Allen, Robert Roy
Abstract:: An investigation was made into certain aspects of protein synthesis at different developmental stages of the flesh fly Sarcophaga bullata. This included measurements of the incorporation of labeled amino acids into protein by intact cells from a single organ, the larval fat body, and a study of amino acid activating...
Resource Type:: Dissertation
Full Text:: like to express his appreciation to Dr. Robert W. Newburgh and to Dr. Victor J. Brookes for their

Reactions of protein with phenols and quinones evaluation of amino acid modification and protein digestibility

Creator:: Wehr, Herbert Michael
Abstract:: Plant tissues contain a wide variety of phenolic compounds, frequently in high concentration. Both non-covalent association of intact and oxidized phenols and covalent linkage of oxidized phenols to protein occur. Such interactions can have important biochemical and nutritional significance. A model system approach was used to identify and quantitate amino...
Resource Type:: Dissertation
Full Text:: DIGESTIBILITY Abstract approved: Redacted for Privacy Dr. W. D. Loomis Plant tissues contain a wide variety

On the chemical and physical limnology of Crater Lake, Oregon

Creator:: McManus, James, 1963-
Resource Type:: Dissertation
Full Text:: hydrothermal activity is --1 W rn-2 and the corresponding salt flux is -5 .tg m-2 sec-1. The annual vertical

Golden Eagles in Denali National Park and Preserve : productivity and survival in relation to landscape characteristics of nesting territories

Creator:: McIntyre, Carol L.
Abstract:: Denali National Park and Preserve (Denali) contains one of the highest densities of nesting Golden Eagles (Aquila cluysaetos) in North America. Productivity of this migratory population varies both temporally and spatially. Regardless of prey abundance, more fledglings are consistently produced at some nesting territories than others. In many raptor studies,...
Resource Type:: Dissertation
Full Text:: Nesting Territories. Abstract approved: - Michael W. Col1o Denali National Park and Preserve (Denali

Translation of dengue virus RNA : influence of the untranslated regions on 5´-cap dependent translation and ribosome scanning

Creator:: Chiu, Wei-Wei
Abstract:: In this thesis, I studied the translation of dengue virus RNA using a luciferase reporter gene system in Vero cells. The dengue reporter mRNA construct, which harbors 5´-terminal viral nts and 3´-terminal nts, could be translated efficiently compared to an alpha globin reporter construct. The 5´-cap structure and 3´-untranslated region...
Resource Type:: Dissertation
Full Text:: Dependent Translation and Ribosome Scanning Abstract approved: Theo W. Dreher In this

The effects of physical parameters on the absorption coefficient of natural waters

Creator:: Pegau, W. Scott
Resource Type:: Dissertation
Full Text:: AN ABSTRACT OF THE THESIS OF W. Scott Pegau for the degree of

Forest associations and secondary plant succession in the southern Oregon coastal range

Creator:: Bailey, Arthur Wesley, 1938-
Abstract:: Forest associations, secondary succession, and relationships of plant communities to Roosevelt elk were investigated. Stratification of vegetation into ecological units and an understanding of secondary succession by habitat-type were a necessary first step in investigations into browsing of conifers by elk. The study was jointly conducted by the Oregon State...
Resource Type:: Dissertation
Full Text:: of the graduate corn- , mittee for their guidance and editorial assistance: Drs. D. W. Hedrick

Effects of Diversity on Emerging Infectious Diseases of Amphibians

Creator:: Snyder, Paul W.
Abstract:: Species declines and extinctions have been recorded across taxa as evidence of an ongoing global biodiversity crisis. Amphibians are at the forefront of these declines with nearly one third of amphibian species estimated to be at risk of extinction. While many factors contribute to population declines and extinctions, the role...
Resource Type:: Dissertation
Full Text:: AN ABSTRACT OF THE DISSERTATION OF Paul W

The role of small mammals as dispersers of mycorrhizal fungal spores within variously managed forests and clearcuts

Creator:: McIntire, Patrick W.
Abstract:: Small-mammal community composition, microhabitat selection, and dispersal of mycorrhizal fungal spores were studied in southwestern Oregon. Sampled habitats exhibited structural variation resulting from silvicultural practices. In 1981, the effect of clearcut treatment on these phenomena was evaluated. In 1982, the effect of forest structure was studied. Discriminant function analysis (DFA)...
Resource Type:: Dissertation
Full Text:: Fungal Spores Within Variously Managed Forests and Clearcuts AN ABSTRACT OF THE THESIS OF Patrick W

Contributions of Epicormic Branches and Delayed Adaptive Foliage in Coastal Douglas-fir under Variable Density Management Regimes

Creator:: Punches, John W.
Abstract:: The contribution of delayed adaptive reiteration to crown maintenance was explored across a wide range of adjacent open space conditions in early-mature (approximately 60 year old) Douglas-fir located on the eastern slope of Oregon’s Coast Range. The stands had experienced uniform thinning in 1964-65 and 1980-81 to release dominant and...
Resource Type:: Dissertation
Full Text:: AN ABSTRACT OF THE DISSERTATION OF John W

Toward An Academic Theory of Social Justice Judgment and Decision-Making : Rights, Justice, and Legal Ideology

Creator:: Werner, Michael W.
Abstract:: This dissertation serves a threefold purpose: 1. identify the principles, practices and assumptions implicated in an academic theory of social justice; 2. continue moving towards articulating a theory of social justice judgment and decision making; and 3. develop a model of social justice judgment and decision making that will assist...
Resource Type:: Dissertation
Full Text:: DISSERTATION OF Michael W. Werner for the degree of Doctor of Philosophy in Education presented on August 1

Driver Distraction from Unmanned Aerial Systems: Evidence, Policy, and Mitigation

Creator:: Barlow, Zachary W.
Abstract:: Unmanned aerial systems (UASs), more commonly known as drones, have recently achieved commercial success for many public and private applications. As with all emerging technologies, new safety concerns and conflicts with existing paradigms are likely to arise. Many potential applications of UASs will result in their operation near roadway infrastructure,...
Resource Type:: Dissertation

The relationship between farm supply cooperatives' economic performance and their organizational power centers' levels of motivation to achieve objectives

Creator:: Lough, Harold W.
Resource Type:: Dissertation
Full Text:: determine fac- tors which could be used for prediction purposes (19). Clodius and Mueller support

Studies on advanced intermediates in the biosynthesis of streptonigrin

Creator:: Erickson, W. Randal
Abstract:: Early studies on the biosynthesis of the quinoline quinone portion of streptonigrin, 1, had suggested the intermediacy of novel aromatic amino acids. In order to test this hypothesis, a series of compounds was synthesized and tested for potential incorporation. [4-¹⁵N] 4-Aminoanthranilic acid, 4 5 a , [4-² H] 7-aminoquinaldinic acid,...
Resource Type:: Dissertation
Full Text:: streptonigrin An Abstract of The Thesis of W. Randal Erickson for the degree of Doctor of Philosophy in

Natural products from tropical and temperate marine algae

Creator:: Bernart, Matthew W.
Abstract:: Following surveys of seaweeds in Oregon and the Caribbean, four algal species were selected for study on the basis of their crude extract biological activity or thin-layer chromatographic characteristics. Extracts were fractionated by normal phase chromatography, including high performance liquid chromatography (HPLC). Derivatives (methyl esters, acetates, and benzoates) of natural...
Resource Type:: Dissertation
Full Text:: algae AN ABSTRACT OF THE THESIS OF Matthew W. Bernart for the degree of Doctor of Philosophy in

Water Efficiency for Urban Landscapes in Semi-Arid Environments

Creator:: Martinson, Richard W.
Abstract:: Urban landscape water use is increasingly a focus of water conservation efforts. This is especially true in the arid and semi-arid regions of the western United States where increased demand, environmental concerns, and extended periods of drought have created chronic water shortages. However, until recently, little attention has been paid...
Resource Type:: Dissertation

An Integrated Approach to Gauge the Effects of Global Climate Change on Headwater Stream Ecosystems

Creator:: Bury, Gwendolynn W.
Abstract:: Climate change is predicted to affect ecosystems, including systems already stressed by human impacts. One ecosystem that is already highly impacted by human land use is the cold headwater stream system of the Pacific Northwest. One method of assessing the function of an ecosystem is by using an indicator species....
Resource Type:: Dissertation
Full Text:: Gwendolynn W. Bury for the degree of Doctor of Philosophy in Zoology presented on August 28, 2015

An investigation of factors influencing the productivity of pharmacists in community pharmacies

Creator:: Sharp, William Thomas
Abstract:: This study sampled the work activities of community pharmacists in eighteen western Oregon pharmacies (9 chain and 9 independent, stratified by daily prescription volume). Utilizing a technique of recording at least 960 observations in each pharmacy, a total of 41,542 observations were recorded into 28 mutually exclusive task activity categories....
Resource Type:: Dissertation
Full Text:: Lee Strandberg, Ph.D. Redacted for privacy Robert W. Sager, Ph.". This study sampled the work

Clay mineralogy and related chemical properties of soils formed on Mazama pumice

Creator:: Chichester, Frederick Wesley
Abstract:: A sequence of soil profiles was sampled along a climate-vegetation transect on the dated Mazama pumice fall in central Oregon. The <2 μ size fraction from each sample was characterized with respect to the relative significance of amorphous and crystalline components, and the individual minerals of the latter group were...
Resource Type:: Dissertation
Full Text:: investigation, and to Drs. H. J. Evans and W. D. Loomis in recognition of their willingness to serve as

Soil Moisture Encodes Plant Water Use Strategies

Creator:: Bassiouni, Maoya
Abstract:: Resilient water, food, and energy management strategies for an ever-growing population and changing environment depends on our understanding of water and carbon cycles from local to global scales. Fluxes of water and carbon are coupled by photosynthesis and plant transpiration cycles the largest fraction of terrestrial water from the land...
Resource Type:: Dissertation
Full Text:: Use Strategies Abstract approved Chad W. Higgins Stephen P. Good

Quantifying the Unproductive Water Lost as Evaporation from Different Irrigation Designs by Analysis of the Soil Stable Water Isotope Compositions

Creator:: Al-Oqaili, Firas M.
Abstract:: The knowledge about the intensive agricultural irrigation is very limited, but the use of irrigation is rapidly increasing. As an outcome, the sympathetic ecosystem is accepting modern irrigation that will play an essential function in the present and future for agricultural products. My dissertation will display the modification for investigation...
Resource Type:: Dissertation

The role of soil-water depletion and plant-moisture stress in soil classification and cambial activity of Douglas-fir

Creator:: Thomas, Byron R.
Abstract:: Relationships between soil-water stress and plant-moisture stress were studied with respect to soil classification and cambial activity in Douglas-fir. The study sites were forested with Douglas-fir and located in McDonald Forest and near Marys Peak in the Oregon Coast Range. Soil-water depletion was followed by the use of gypsum blocks...
Resource Type:: Dissertation
Full Text:: implementation of this study. Acknowledgments a r e also made to Drs. J. K. Munford, W. W. Chilcote, R. Garren

Response of soil microbial communities and nitrogen cycling processes to changes in vegetation inputs

Creator:: Brewer, Elizabeth Ann
Abstract:: Changes in the type and amount of plant inputs can occur gradually, as with succession, or rapidly, as with harvesting or wildfire. With global change it is anticipated that both gradual and immediate scenarios will occur at increasing frequency. Changes in vegetation inputs alter the quality and quantity of soil...
Resource Type:: Dissertation
Full Text:: effort I put in. CONTRIBUTION OF AUTHORS Dr. Thomas W. Boutton contributed with the

Nutrition and management of the beef unit for production of slaughter animals on range and improved pastures in southeastern Oregon

Creator:: Daugherty, Dennis A.
Abstract:: Studies were conducted over a two year period to evaluate alternative finishing methods for spring and fall-born beef cattle. Management alternatives from birth to slaughter included season of calving, lactating cow nutrition, preweaning calf nutrition, weaning age, calf and yearling winter nutrition, range and irrigated pasture supplementation, grazing practice, range...
Resource Type:: Dissertation
Full Text:: regions. However, Raleigh at al. (1970a) and Mueller and Harris (1967) have shown definite advantages to

Biophysical factors driving the distribution and abundance of redband/steelhead trout (Oncorhynchus mykiss gairdneri) in the South Fork John Day River Basin, Oregon, USA

Creator:: Madriñán, Luis Francisco
Abstract:: The overall goal of this study was to identify multiple scales of habitat use and habitat electivity by redband/steelhead trout and define the limiting factors affecting the distribution patterns of this species during summer flows. The main objective in chapter 2 was to identify the most important habitat associations that...
Resource Type:: Dissertation
Full Text:: Hiram W. Li Guillermo R. Giannico The overall goal of this

Phylogenomics and Evolution of Ground Beetles, with an Emphasis on the Speciose Tribes Chlaeniini and Bembidiini (Coleoptera: Carabidae)

Creator:: Pflug, James M.
Abstract:: In this dissertation, I investigate the evolution and genomes of carabid beetles, a worldwide family of over 38,000 species. I focus on two species-rich groups, the tribes Chlaeniini and Bembidiini, both of which are primarily found on the shores of bodies of water. The former are distinctive for their defensive...
Resource Type:: Dissertation
Full Text:: SECRETIONS James M. Pflug, Kipling W. Will, Athula Attygalle, Robert Davidson, David R. Maddison

A numerical analysis of ice fog produced by automobiles

Creator:: Nelson, William George
Abstract:: A model of an exhaust plume was developed and programmed on a digital computer. The purpose of the model was to predict the concentration and size distribution of ice particles produced from automobile exhaust during arctic conditions. The model accounted for the nucleation, growth, and freezing of the condensed water...
Resource Type:: Dissertation
Full Text:: privacy 7Richard W. Boubel A model of an exhaust plume was developed and programmed on a digital

Improving ecological risk assessment of pesticides for nontarget terrestrial vertebrates

Creator:: Wang, Guiming
Abstract:: The Quotient Method (QM) is used by the United States Environmental Protection Agency (USEPA) in ecological risk assessments of pesticides for nontarget organisms. The QM requires several assumptions regarding exposure and hazards of pesticides to wildlife; several of these assumptions have not been tested. During 1997-99, I conducted three experiments...
Resource Type:: Dissertation
Full Text:: - W. Daniel Edge The Quotient Method (QM) is used by the United States Environmental Protection

Formulation and pharmacokinetics of melatonin

Creator:: Konsil, Julraht
Resource Type:: Dissertation
Full Text:: . I would like to thank my two major professors; Dr. Keith A. Parrott and Dr. James W. Ayres, for

Development of novel spray coated soft elastic gelatin capsule sustained release formulations of nifedipine, bioavailability and bioequivalence of verapamil HCL controlled release formulations, pharmacokinetics of terbinafine after single oral doses in raptors

Creator:: Fahmy, Sahar Abd El-Sattar
Abstract:: This dissertation describes the development of a new sustained release formulation of nifedipine. The new formulation was developed by coating commercially available immediate release soft elastic gelatin capsules using a spray coating technique with two different polymeric combinations. Dissolution studies were conducted and showed that controlled release of nifedipine was...
Resource Type:: Dissertation
Full Text:: Terbinafine after Single Oral Doses in Raptors. Abstract approved: J. Mark Christensen James W. A This

Impacts of forest-to-agriculture conversion on aboveground and soil carbon and nitrogen stocks along a bioclimatic gradient in Costa Rica

Creator:: Jobse, Judith C.
Abstract:: Tropical forest-to-agriculture conversions contribute to ~20% of contemporary global C emissions. Current global C flux estimates assume C is lost from vegetation and soils over time due to this conversion, and that C stocks in agricultural lands are fairly uniform across the tropics. Global C stock and flux estimates may...
Resource Type:: Dissertation
Full Text:: : W. Daniel Edge Mark E. Harmon Tropical forest-to-agriculture conversions contribute to ~20

Studies of rainbow trout Ki-ras gene : sequencing, aflatoxin B1 binding, and chromatin structure

Creator:: Liang, Xiaoshan
Abstract:: Characterization of the 5' flanking region of rainbow trout ki-ras gene was begun with the cloning and sequencing of this region by the inverse PCR technique and dideoxynucleotide chain termination method. In total, a nucleotide sequence of 1080 bp upstream from the first coding ATG was sequenced. Although this region...
Resource Type:: Dissertation
Full Text:: affinity of trout ki-ras gene for aflatoxin Bi w as determined by in vitro alkylation experiments. Exon 1

Vitellogenesis : a biomarker for estrogenic and antiestrogenic effects of organochlorines in rainbow trout

Creator:: Donohoe, Regina M.
Abstract:: Persistent organochlorines (OCs) bioaccumulate in aquatic biota and potentially impair reproduction via endocrine disruption. The present research evaluated estrogenic effects of the OCs, chlordecone (CD) and o,p'-DDT/DDE, and the antiestrogenicity of 3,4,5,3',4',5'-hexachlorobiphenyl (345-HCB) in juvenile rainbow trout, utilizing vitellogenesis as a biomarker. Vitellogenesis, estrogen regulated hepatic production of the yolk...
Resource Type:: Dissertation
Full Text:: acknowledge the advice and participation of my committee members; Dr. Daniel P. Selivonchick, Dr. Henry W

Tentative equilibrium diagram for the nickel-rich end of the nickel-zirconium system

Creator:: Armstrong, Asa William
Resource Type:: Dissertation
Full Text:: ; chemical section, analyses; H. G. Anderson, R. L. Carpenter, D. K. Deardorff, H. G. Nelson, R. W

Nutritional strategies to improve the reproductive performance of beef females

Creator:: Cappellozza, Bruno Ieda
Abstract:: In the first set of studies, 2 experiments evaluated the influence of supplement composition on ruminal forage disappearance, performance, and physiological responses of Angus × Hereford cattle consuming a low-quality, cool-season forage (8.7 % CP and 57 % TDN). In Exp. 1, 6 rumen-fistulated steers housed in individual pens were...
Resource Type:: Dissertation

Simulating vegetation shifts and carbon cycling in Yosemite National Park

Creator:: Conklin, David R.
Abstract:: The vegetation in Yosemite National Park changed during the 20th century and may change in the 21st century in response to climate change. Vegetation surveys made during the 1930s and the 1990s provide benchmark records separated by 60 years. This study uses the MC1 dynamic global vegetation model to forecast...
Resource Type:: Dissertation

Genetic and stability relationships of four Western Cascade soils

Creator:: Paeth, Robert Carl, 1925-
Abstract:: A sequence of soils derived from tuffaceous rocks was sampled on the H. J. Andrews Experimental Forest and adjacent U. S. Plywood land to determine some genetic and stability relationships. The less than two micron size fraction from each sample was characterized by x-ray diffraction with respect to crystalline clay...
Resource Type:: Dissertation
Full Text:: . Harold E. En lows, William W. Chilcote, and David 0. Chilcote for their willingness to serve as program

Ecohydrological mediation of water budget partitioning and time scales of subsurface flow in a seasonally semi-arid grassland

Creator:: Pangle, Luke A.
Abstract:: Understanding how the interactions and feedbacks between plant function, climate, and soils ultimately affects the terrestrial water balance and subsurface flow processes is major challenge in scientific hydrology. This dissertation summarizes the findings of a manipulative climate warming experiment, an observational field study that utilized stable-isotope tracers, and associated modeling...
Resource Type:: Dissertation
Full Text:: ), 207-231. 7 Maloszewski, P., S. Maciejewski, C. Stumpp, W. Stichler, P. Trimborn, and D

Examining the Contribution of Self-Regulation and Executive Function Skills to School Readiness and Longer-Term Achievement Gaps: A Replication and Extension in Statewide and National Datasets

Creator:: Finders, Jennifer K.
Abstract:: Self-regulation in early childhood encompasses higher-order executive function processes and lower-order emotional responses that enable children to navigate the classroom environment. Although self-regulation and executive functions are overlapping constructs, self-regulation represents a broad assessment of children’s ability to call upon executive function processes in order to meet contextual demands. Prior...
Resource Type:: Dissertation

Evolutionary Insights into Cnidarian-Dinoflagellate Symbiosis from Natural Variation in Aiptasia Sea Anemones

Creator:: Bellis, Emily S.
Abstract:: Mutualistic associations between corals and symbiotic microalgae of the genus Symbiodium power tropical reef ecosystems, hotspots of marine biodiversity that buffer coastlines, support tourism- and fisheries-based economies, and offer untapped potential for discovery of novel pharmaceutical compounds. However, reef ecosystems are declining at an alarming rate, in large part due...
Resource Type:: Dissertation

Fractionation and some properties of water-dispersible soil organic-mineral particles

Creator:: Spycher, Gody
Resource Type:: Dissertation
Full Text:: to Drs. M. E. Harward, K. Cromack and W. H. Slabaugh for serving on the program committee, and for

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