Index Catalog // ScholarsArchive@OSU

Influence of laser processing on the corrosion and microstructure of zirconium based material

Creator:: Reitz, W. (Wayne)
Resource Type:: Dissertation
Full Text:: microstructure of zirconium based material AN ABSTRACT OF THE THESIS OF Wayne Reitz for the degree of Doctor

Isolation and partial characterization of temperature sensitive division mutants of Chlamydomonas reinhardtii

Creator:: Wolff, Darold Melvin, 1940-
Abstract:: The primary objective of this study was to develop methods for the selection of temperature sensitive division (TSD) mutants of Chlamydomonas reinhardtii. Such methods were developed and four temperature sensitive (TS) mutants were isolated and partially characterized. Wild type (WT) cells of the plus mating type were synchronized by a...
Resource Type:: Dissertation
Full Text:: MUTANTS OF CHLAMYDOMONAS REINHARDTII Abstract approved: Redacted for Privacy D. 'Stuart Nacht The

Genetic and biochemical studies in the genus Bacillus

Creator:: Beaty, Jon Stuart
Resource Type:: Dissertation
Full Text:: ABSTRACT OF THE THESIS OF Jon Stuart Beaty for the degree of Doctor of Philosophy in Micro- biology

The control and fate of enteric bacteria in the environment with particular emphasis on the factors influencing fecal indicator survival in waste storage facilities

Creator:: Crane, Stuart R.
Abstract:: The indiscriminate release of fecal bacteria to the environment can present a public health hazard when pathogenic species gain access to drinking and recreational water sources. The extent of bacterial contamination of surface and ground waters associated with animal production units and waste application areas seems largely dependent on the...
Resource Type:: Dissertation
Full Text:: facilities Stuart R. Crane AN ABSTRACT OF THE THESIS OF for the degree of Doctor of Philosophy in Civil

The relationship of lysosomal stability to radiation-induced delay of cell division in Tetrahymena pyriformis

Creator:: Hodge, Frederick Allen
Abstract:: Cell division in a heat synchronized Tetrahymena pyriformis (GL-I) cell can be delayed if the cell is exposed to X-irradiation (300 kVp, 20 mA, HVL = 0. 9 mm Cu, 25 R/ sec) prior to a critical time after the end of the synchronizing treatment (EST). At the critical time,...
Resource Type:: Dissertation
Full Text:: CELL DIVISION IN TETRAHYMENA PYRIFORMIS Abstract approved: Redacted for privacy D. Stuart Naftlt

Measured and modeled energy balance parameters to evaluate the environmental conditions of reforestation

Creator:: Flint, Alan L.
Abstract:: In order to develop three models for use in quantifying the environmental conditions of reforestation, extensive measurements required for energy balance calculations were taken for a reforestation site in southwest Oregon. The models are used to decrease the number of measurements required to properly evaluate the potential for heat or...
Resource Type:: Dissertation
Full Text:: Approved: Redacted for Privacy Stuart Childs In order to develop three models for use in quantifying the

Transmission of "Salmon Poisoning" disease to dogs by Nanophyetus salmincola eggs

Creator:: Nyberg, Peter Albert
Abstract:: The presence of the etiologic agent of "salmon poisoning" disease, Neorickettsia helminthoeca, was demonstrated in eggs of the trematode vector, Nanophyetus salmincola. Three dogs were given 100,000 and one dog 82,000 ground fluke eggs by intraperitoneal injection. The four animals developed "salmon poisoning" disease and died. One of these dogs...
Resource Type:: Dissertation
Full Text:: N (A:; \C)-r \S( 1 ACKNOWLEDGMENT Dr. Stuart E. Knapp has freely and enthusiastically given of

Pathogenicity of experimentally induced concurrent infections of Fasciola hepatica and Haemonchus contortus in sheep

Creator:: Presidente, Paul J.
Abstract:: Twenty yearling sheep were allotted to four groups, each containing five sheep of approximately equal weight. On experimental days 0, 1, 2, 3, and 4, each sheep in each group was given the following inoculations by stomach tube: five sheep in group I (Fasciola hepatica-exposed controls) were given approximately 120...
Resource Type:: Dissertation
Full Text:: HEPATICA AND HAEMONCHUS CONTORTUS IN SHEEP Abstract approved: Redacted for privacy Stuart E. ,Knapp

Studies on some digenetic trematodes from Ritner Creek, Polk County, Oregon

Creator:: Law, Daniel Tin-Hung
Abstract:: Seven species of fresh water fishes belonging to three different families and two species of snails from Ritner Creek, Polk County, Oregon were surveyed for adult and larval trematodes. A total of seven species of trematodes representing four families was recovered from the intestine of the fishes. Of these, at...
Resource Type:: Dissertation
Full Text:: RITNER CREEK, POLK COUNTY, OREGON Abstract approved: Redacted for privacy Stuart E. Knat4o Seven

Histochemical study of some enzymes of the common liver fluke, Fasciola hepatica L.

Creator:: Panitz, Eric
Abstract:: Acid and alkaline phosphatase was localized histochemically in the intestinal epithelium and excretory duct respectively in fresh frozen sections of Fasciola hepatica. Polyphenol oxidase was localized in the vitellaria, vitelline ducts and egg-shells. The distribution and nature of esterases was examined histochemically. Acetyl-cholinesterase was observed in the tegument, neural ganglia,...
Resource Type:: Dissertation
Full Text:: Privacy Stuart E. Knapp I Acid and alkaline phosphatase was localized histochemically in the intestinal

The gendered experience of professional practice : a phenomenological study of the lived experiences of male elementary school counselors

Creator:: Edwards, Charles C.
Abstract:: This qualitative study explored the gendered professional experiences of male elementary school counselors. The participants or co-researchers were twelve men of varied ethnic and racial backgrounds between 25 and 60 years old. They lived and worked in five US states in urban, suburban and rural settings. They provided school counseling...
Resource Type:: Dissertation
Full Text:: School Counselors. Abstract approved: Stuart F. Chen-Hayes This qualitative study

Sphaeromyxa maiyai sp. n. (Protozoa:Myxosporidea) : a light microscopic and ultrastructural analysis employing the scanning and transmission electron microscopes

Creator:: Morrison, N. Donald
Abstract:: Sphaeromyxa maiyai sp. n. (Myxosporidea:Myxiidae) is described from the gall bladder of the Pacific tomcod, Microgadus proximus Girard, from Newport, Oregon. The plasmodial (=trophic, trophozoite) stage is discoid averaging between 1 and 2 cm. The spore averages 27.6 x 5. 6μm with pyriform polar capsules averaging 9. 3 x 3....
Resource Type:: Dissertation
Full Text:: MICROSCOPES Abstract approved: Redacted for Privacy Dr. Stuart E. Knapp[/ Dr. Ivan Pratt, deceased

Cross section measurements for the production of activities by 14-mev neutrons

Creator:: Forbes, Stuart Gordon
Resource Type:: Dissertation
Full Text:: •MEV NEUTRONS by STUART GORDON FORBES A THESIS submitted to ORBDON STATE COLLEGE in partial

The effect of ultra-high pressure on the emf of thermocouples

Creator:: Eide, Stuart Ames
Abstract:: The effect of ultra-high pressure on the thermal emf of a chromelialumel thermocouple is investigated using an indirect method which does not require a direct knowledge of the temperature of the pressurized junction. The unknown temperature is written parametrically as a function of a directly measured quantity, the electrical power...
Resource Type:: Dissertation
Full Text:: AN ABSTRACT OF THE THESIS OF STUART AMES EIDE for the

The effect of environmental conditions on the reductive dechlorination of pentachlorophenol by a mixed, methanogenic culture

Creator:: Stuart, Sheryl L.
Resource Type:: Dissertation
Full Text:: . Stuart for the degree of Doctor of Philosophy in Civil Engineering presented on October 28, 1996. Title

Urea release from sulfur-coated urea and nitrogen utilization by tall fescue

Creator:: Pettygrove, G. Stuart
Abstract:: Sulfur-coated urea (SCU), a slow release nitrogen fertilizer, may be economically competitive with conventional fertilizers, but little is known of the mechanism of urea release from SCU and the environmental factors which affect the urea release rate. Objectives of this thesis were: (1) to determine factors which affect the rate...
Resource Type:: Dissertation
Full Text:: AN ABSTRACT OF THE THESIS OF George Stuart Pettygrove for

Spatial and temporal patterns of windthrow in the Bull Run Watershed, Oregon

Creator:: Sinton, Diana Stuart
Abstract:: Throughout the 20th century, windthrow has affected forests in the Bull Run watershed, a 26,500 ha basin that is the principal water source for the city of Portland, Oregon. Windthrow from storms in 1973 and 1983 was mapped into a geographic information system (GIS) and compared to a 1931 windthrow...
Resource Type:: Dissertation
Full Text:: Redacted for privacy © Copyright by Diana Stuart

Automated science curriculum : an experimental science program

Creator:: Hutchinson, John Stuart
Abstract:: Purpose: The purpose of this study was to determine statistically the effects of an automated science curriculum on the science learnings of eighth grade students. This curriculum involved the use of Keysort cards as a flexible handbook for teachers and included in the directions for use a teaching method which...
Resource Type:: Dissertation
Full Text:: program AN ABSTRACT OF THE THESIS OF John Stuart Hutchinson for the Ph. D. in General Science (Name

Effects of soil moisture-tension on rubidium uptake by sunflowers

Creator:: Stevenson, David Stuart
Abstract:: There is considerable evidence that the growth and elongation of plant roots increases linearly or almost linearly with increasing water contents or decreasing moisture-tension of soil. If this is true it is difficult to distinguish the effects of different water contents on absorption phenomena such as water or ion uptake...
Resource Type:: Dissertation
Full Text:: Sunflowers AN ABSTRACT OF THE THESIS OF David Stuart Stevenson for the Ph.D in Soils Date thesis is

Examination of adolescents' sources of subjective task value in sport

Creator:: Stuart, Moira E.
Abstract:: Sport is an avenue for children and adolescents to improve physical skills as well as enhance their psycho-social development. Despite the benefits of sport, numerous children and adolescents choose not to be physically active. Consequently, several investigators have sought to determine why some children choose to participate in sport, while...
Resource Type:: Dissertation
Full Text:: in sport AN ABSTRACT OF THE THESIS OF Moira E. Stuart for the degree of Doctor of Philosophy in

The effects of various factors on the formation and fate of extranuclear chromatic bodies in Tetrahymena pyriformis

Creator:: Salamone, Michael
Abstract:: During karyokinesis in the ciliate, Tetrahymena pyriformis, strain GL-I, an extranuclear chromatin body (ECB) is frequently formed as an excluded mass between the two dividing daughter macronuclei. The formation and fate of ECB's were followed by means of Feu lgen, toluidine blue 0, and euchrysine staining and autoradiography (³H-thymidine). The...
Resource Type:: Dissertation
Full Text:: PYRIF9MIS Abstract approved: Redacted for Privacy Ernet T. DornfeldN Redacted for Privacy D. Stuart

An experimental study of combined forced and free convective heat transfer to non-Newtonian fluids in the thermal entry region of a horizontal pipe

Creator:: Kim, Yong Jin, 1956-
Resource Type:: Dissertation
Full Text:: Abstract approved: James R. Welty \, The case of combined free and forced convection heat transfer in

The prompt responses of the sea urchin, Strongylocentrotus purpuratus, to ionizing radiation

Creator:: Dedrick, Millridge Cornelius
Resource Type:: Dissertation
Full Text:: movement. When the intact urchin was exposed to X-rays at exposure rates of 1 R/sec to 15 R/sec until a

The role of keratinocytic RXRα in regulating melanocyte homeostasis and carcinogen induced melanomagenesis, The role of keratinocytic RXR[alpha] in regulating melanocyte homeostasis and carcinogen induced melanomagenesis

Creator:: Hyter, Stephen D.
Abstract:: Cutaneous melanoma remains the deadliest form of skin cancer, with a diagnosis of metastasis indicating a median survival rate of less than a year. Solar ultraviolet (UV) radiation, especially childhood sun exposure, is an important etiological risk factor of melanoma. Previous studies determined that mice selectively lacking the nuclear hormone...
Resource Type:: Dissertation

Antioxidant mechanisms of ascorbate and (R)-α-lipoic acid in aging and transition metal ion-mediated oxidative stress

Creator:: Shu, Jung Hyuk
Abstract:: Oxidative stress is the major driving force behind the aging process and many age-related diseases. However, direct experimental evidence of whether antioxidants, such as ascorbate (AA) and lipoic acid (LA) can slow the progression of aging process and/or reduce risks of developing degenerative disease is largely absent. This suggests a...
Resource Type:: Dissertation
Full Text:: Mechanisms of Ascorbate and (R)-Alpha-Lipoic Acid in Aging and Transition Metal Ion-Mediated Oxidative Stress

Effect of pharmaceuticals and natural products on multidrug resistance mediatedtransport in Caco-2 and MDCKII-MDR1 drug transport models

Creator:: Fan, Ying
Abstract:: This thesis details my investigation of some pharmaceuticals and natural products on the transport of drugs which are substrates of P-glycoprotein (P-gp), such as cyclosporin A (CSA) and digoxin by using Caco-2 and MDCKII-MDR1 drug transport models. Three objectives were performed to address this goal. The first objective was to...
Resource Type:: Dissertation

Secondary metabolism in Streptomyces murayamaensis

Creator:: Melville, Chris R.
Resource Type:: Dissertation
Full Text:: ABSTRACT OF THE DISSERTATION OF Chris R. Melville for the degree of Doctor of Philosophy in Chemistry

Parameter and volterra-kernel estimation of bilinear systems

Creator:: Baheti, Radhakisan Sohanlal
Abstract:: It has been established that bilinear models occur frequently in nature and offer some important advantages from the standpoint. of controllability, optimization and modeling. The estimation of bilinear systeim models from the Measurements of input-output data are discussed. In the first approach a parametric model of a discrete-time linear system...
Resource Type:: Dissertation
Full Text:: Privacy (Signature) Dr. R. R. Mohler It has been established that bilinear models occur frequently in

Therapeutic non-directive play with low achievers in reading

Creator:: Hoyser, Elizabeth Emily
Abstract:: The purpose of the study was to investigate the effectiveness of therapeutic non- directive play treatment with third grade boys who were low achievers in reading and to determine how treatment was associated with changes in reading achievement: vocabulary and comprehension; reading attitude and academic self-concept; role expectations and self-adequacy....
Resource Type:: Dissertation
Full Text:: approved: Redacted for Privacy Dr. Anna R. Meeks The purpose of the study was to investigate the

Pathways and enzymes involved in glucose catabolism by lactic streptococci

Creator:: Nandan, Rajiva
Abstract:: The enzymes and pathways involved in the catabolism of glucose by several strains of Streptococcus diacetilactis, Streptococcus cremoris, and Streptococcus lactis, commonly called the lactic streptococci, were studied. The presence of aldolase, triosephosphate isomerase and alcohol dehydrogenase in these organisms provided evidence for the operation of the Embden-Meyerhof-Parnas (EMP) pathway...
Resource Type:: Dissertation
Full Text:: I wish to express my sincere thanks to Dr. W. E. Sandine and Dr. P. R. Elliker for their guidance

A study of the relationships between selected perceptual-motor behaviors and: achievement in reading; achievement in mathematics; classroom behavior; academic self-concept; and academic motivation for first and third grade boys and girls

Creator:: Levenspiel, Mary Josephine
Abstract:: This study investigated the relationships between selected perceptual-motor behaviors and the following: achievement in reading, achievement in mathematics, academic self-concept, academic motivation and classroom behavior. This investigation was designed to explore the suggestion of Newell Kephart that there is a relationship between perceptual-motor behavior and school success, and to provide...
Resource Type:: Dissertation
Full Text:: Abstract approved: Redacted for privacy Anna R. Meeks This study investigated the relationships between

Turbulence in the bottom boundary layer

Creator:: Newberger, Priscilla
Resource Type:: Dissertation
Full Text:: Abstract approved: D. R./Caldwell Vertical profiles of temPerature, temperature-gradient and, in some

Non parametric c-sample tests for arbitrarily censored data

Creator:: Hirunraks, Anek
Abstract:: Consider the c- sample testing problem with null hypothesis H[subscript]o : F₁(x) = ... = F[subscript]c(x), where F[subscript]j(x), j = 1 ..., c, represent absolutely continuous distribution functions for failure distributions. Furthermore, consider arbitrarily (right) censored samples, which may arise from putting the (censored) experimental units on test at different...
Resource Type:: Dissertation
Full Text:: CENSORED DATA Redacted for Privacy Abstract approved: David R. Thomas Consider the c- sample testing

The Effects of Host and Pathogen Variation on Infection Dynamics in the Amphibian-Chytrid System

Creator:: Dang, Trang D.
Abstract:: This dissertation uses manipulative experiments to explore amphibian-Bd infection dynamics. Although there has been almost two decades research since the discovery of Bd, many questions still remain regarding what conditions mediate chytridiomycosis virulence. My research shows how certain host and pathogen factors can influence disease virulence. Identifying how host and...
Resource Type:: Dissertation
Full Text:: : ______________________________________________________ Andrew R. Blaustein This dissertation uses manipulative experiments to explore

Development of Carbenoid Eliminative Cross-coupling for the Stereocontrolled Synthesis of Trisubstituted Alkenyl Moieties Within Styrenes and 1,3-Dienes

Creator:: Tanpure, Subhash D.
Abstract:: Traditional approaches for the direct preparation of alkenes are unable to fully control either the stereochemical configuration of the carbon-carbon double bond or else the regiochemistry of the substituents surrounding it. The recently introduced concept of carbenoid eliminative cross-coupling (CEXC) offers a remedy to these deficiencies by providing for a...
Resource Type:: Dissertation
Full Text:: : ______________________________________________________ Paul R. Blakemore Traditional approaches for the direct preparation of alkenes are

The effects of multiple pathogens on amphibians in the Pacific Northwest

Creator:: Romansic, John M.
Abstract:: The earth is undergoing a “biodiversity crisis” characterized by loss of populations, species, genetic diversity, and ecosystem services. Part of this crisis consists of population declines, extinctions, and increased incidence of deformities in amphibians. It is unknown whether deformities contribute to these declines. Many cases of population declines in amphibians...
Resource Type:: Dissertation
Full Text:: : ________________________________________________________ Andrew R. Blaustein The earth is undergoing a “biodiversity crisis” characterized by

Disentangling the Biotic and Abiotic Drivers of the Amphibian Disease Chytridiomycosis

Creator:: Bradley, Paul W.
Abstract:: The ongoing worldwide loss of biodiversity has been described as a "biodiversity crisis," "the Anthropocene defaunation," and alternatively "an extinction spasm." More recently, many scientists have come to the conclusion that we are witnesses to Earth's sixth major mass extinction event, which has the potential to fundamentally alter basic ecological...
Resource Type:: Dissertation
Full Text:: : ______________________________________________________ Andrew R. Blaustein The ongoing worldwide loss of biodiversity has been described as a

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:: : ______________________________________________________ Andrew R. Blaustein Species declines and extinctions have been recorded across taxa

Environmental influences on host-pathogen dynamics of the amphibian chytrid fungus

Creator:: Buck, Julia C.
Abstract:: The causes of the global biodiversity crisis are varied and complex. Anthropogenic threats may act in isolation, or interact additively or synergistically with each other or with natural stressors to affect sensitive taxa. The recent emergence of many infectious diseases in wildlife has brought attention to the role of disease...
Resource Type:: Dissertation
Full Text:: : _____________________________________________________________________ Andrew R. Blaustein The causes of the global biodiversity crisis are varied and complex

The effects of an emerging pathogen on amphibian host behaviors and interactions

Creator:: Han, Barbara A.
Abstract:: Contemporary environmental change encompasses massive biodiversity loss and increasing numbers of emerging diseases worldwide. As part of a global biodiversity crisis, amphibians are disappearing at unprecedented rates. Batrachochytrium dendrobatidis is an emerging infectious pathogen prominently associated with many declines. Chapter 1 reviews the past decade of research on this system...
Resource Type:: Dissertation
Full Text:: . Abstract approved: Andrew R. Blaustein Contemporary environmental change encompasses massive

Chemistry of the flavor deterioration of sterilized concentrated milk

Creator:: Arnold, Roy Gary
Abstract:: Deterioration of the flavor of sterilized concentrated milk (SCM) is recognized as the principal limiting factor to commercial acceptance of this product. Although a number of volatile compounds have been identified in SCM, quantitative information on these compounds is lacking. It is therefore difficult to ascertain the significance of these...
Resource Type:: Dissertation
Full Text:: Abstract approved: Dr. R. C. Lindsay tr— Deterioration of the flavor of sterilized concentrated

Effects of pesticides on amphibians with special reference to the pyrethroidinsecticide, cypermethrin

Creator:: Biga, Lindsay M.
Abstract:: Pollution by pesticides is a ubiquitous concern for wildlife. The effects of pesticides are especially concerning in aquatic environments, which are particularly vulnerable as they have several exposure routes for the influx of chemicals. These effects are of particular concern as biodiversity loss reaches unprecedented rates. This includes recent declines...
Resource Type:: Dissertation
Full Text:: , Cypermethrin Abstract approved: Andrew R. Blaustein Pollution by pesticides is a

Ultraviolet radiation as an environmental stressor of amphibians

Creator:: Bancroft, Betsy A.
Abstract:: My thesis explored the effects of and potential mediating mechanisms for an important environmental stressor, ultraviolet-B (UVB) radiation. UVB radiation has negative effects on organisms in both terrestrial and aquatic systems. I used meta-analysis to quantify the effects of UVB radiation on a diversity of aquatic organisms (Chapter 2). UVB...
Resource Type:: Dissertation
Full Text:: Abstract approved: Andrew R. Blaustein My thesis explored the effects of and potential mediating

Metabolism of volatile compounds by microorganisms

Creator:: Keenan, Thomas William
Abstract:: Single-strain cultures of Streptococcus cremoris, Streptococcus lactis, Streptococcus diacetilactis, and Leuconostoc citrovorum produced little or no acetone and no dimethyl sulfide when grown in milk culture. These organisms had little or no ability to decarboxylate antexogenous source of acetoacetic acid nor were they capable of producing dimethyl sulfide from methyl...
Resource Type:: Dissertation
Full Text:: ) (Date) Title: METABOLISM OF VOLATILE COMPOUNDS BY MICROORGANISMS Abstract approved: R. C

Simultaneous tolerance intervals in the linear regression model

Creator:: Limam, Mohamed
Resource Type:: Dissertation
Full Text:: Redacted for privacy Abstract approved :_ David R. Thomas Simultaneous tolerance intervals are developed

Performance of generalized Neyman smooth goodness of fit tests

Creator:: Kang, Soo-Il
Resource Type:: Dissertation
Full Text:: Redacted for Privacy Abstract approved: Dr. David R. Thomas The small sample performance of generalized

All hosts are not created equal : variation in amphibian responses to an emerging fungal pathogen and why it matters

Creator:: Gervasi, Stephanie S.
Abstract:: Emerging infectious diseases are increasing globally and are a threat to human, wildlife, and ecosystem health. The emerging fungal pathogen, Batrachochytrium dendrobatidis (Bd), or amphibian chytrid fungus, is associated with worldwide amphibian population declines and extinctions. Bd has been found on every continent where amphibians exist and has been documented...
Resource Type:: Dissertation
Full Text:: Responses to an Emerging Fungal Pathogen and Why it Matters Abstract approved: Andrew R. Blaustein

Complexity in host-pathogen dynamics : dispersal uncertainties, metapopulation persistence and the role of a changing climate

Creator:: Xie, Yang
Abstract:: Emerging infectious diseases impact both human and wildlife populations. Infectious agents, in particular the aquatic fungus Batrachochytrium dendrobatidis (chytrid), have an influential role in driving global amphibian population declines. The emergence of the chytrid fungus has aspects of both geographic spread as well as climate shifts altering environmental conditions and...
Resource Type:: Dissertation
Full Text:: Abstract approved: _____________________________________________________________________ Andrew R

Enhancing social-emotional and character development for youths' success : a theoretical orientation and an evaluation using a cluster-randomized design

Creator:: Snyder, Frank J.
Abstract:: Interest in social-emotional and character development (SECD) programming has intensified in recent years. SECD-related programs often seek to enhance a variety of health-related outcomes by addressing multiple influences and embracing a comprehensive approach that includes youth, school personnel, families, and communities. Alongside a comprehensive approach arises the need for a...
Resource Type:: Dissertation
Full Text:: Design. Abstract approved: Brian R. Flay Interest in social-emotional

Host-pathogen dynamics in a changing environment : susceptibility of amphibians to an emerging infectious disease

Creator:: Searle, Catherine L.
Abstract:: Infectious diseases are a growing concern for both humans and wildlife. The negative effects of infectious disease have been exemplified by the recent global amphibian population declines associated with disease outbreaks. Although multiple pathogens and factors play a role in these declines, the aquatic fungal pathogen, Batrachochytrium dendrobatidis (Bd), has...
Resource Type:: Dissertation
Full Text:: : Andrew R. Blaustein Infectious diseases are a growing concern for both humans and wildlife

A study of turbulence in the viscous sublayer and logarithmic region of the bottom boundary layer

Creator:: Chriss, Terry Michael
Abstract:: Detailed current profiles between the sediment-water interface and 20 cm above it reveal a viscous sublayer in the bottom boundary layer on the Oregon continental shelf. Data from three field experiments are used to test fundamental assumptions about boundary layer flow in the ocean. The first study, discussed in Chapter...
Resource Type:: Dissertation
Full Text:: Mark Mats br (profiler and tripod development), Steve Wilcox (electronics design), Stuart Blood

Selected factors affecting the pattern of agricultural land conversion in Washington County, Oregon, 1963-1973

Creator:: Furuseth, Owen J., 1949-
Abstract:: In recent years the conversion of agricultural lands to more intensive non-rural land uses has become a focus of increasing public awareness and concern. The growing attention to farmland conversion is manifested in increasing public policies and legilsation to protect agricultural and forestry land uses. Nevertheless, our understanding of the...
Resource Type:: Dissertation
Full Text:: -11973 Abstract Approved: Redacted for Privacy James R. P(ase In recent years the conversion of

Performance of some tests for bivariate independence, interchangeability, and equality of distributions of ratios

Creator:: Ferguson, Nancy Lo
Abstract:: The purpose of this thesis is to derive and compare asymptotic performances of certain tests of independence, interchangeability and equality of the distributions of_ratios Y/X for positive variates and Y with joint c.d.f. H(x,y) of particular forms. Three bivariate families, Morgenstern, Plackett, and Moran, are considered which permit marginal c.d.f.'s...
Resource Type:: Dissertation
Full Text:: RATIOS Redacted for Privacy Abstract approved: DR. DAVID R. THOMAS The purpose of this thesis is to

An Exploration of Climate Change, Conservation, and Cooperation, in Three Essays

Creator:: Johnson, Steven Mana'oakamai
Abstract:: The defining feature of our planet are the oceans, which make up 70% of the Earth’s surface. The importance of the ocean cannot be understated: 50% of oxygen originates from phytoplankton; heat is absorbed and redistributed by ocean currents; and hundreds of millions of people rely on the ocean for...
Resource Type:: Dissertation
Full Text:: Three Essays. Abstract approved: __________________________________________ James R. Watson

The influence of (2-chloroethyl)-trimethylammonium chloride on the ribonucletic acid content of wheat (Triticum aestivum) leaves

Creator:: Baldwin, Richard William, 1933-
Abstract:: A study was made on the effect of CCC (2-chloroethyl)-trimethyl-ammonium chloride), a plant growth retardant, on the RNA (ribonucleic acid) content of wheat plants, It was found that the RNA content of wheat leaves generally decreased with increasing levels of CCC up to 1x10⁻⁵M. Thereafter, the RNA content again increased...
Resource Type:: Dissertation
Full Text:: to 1x1.0-5U" Thereafter, the R}IA content again increased untiL the threshold of toxiclty to wheaE

Indirect effects of ultraviolet-B radiation on larval amphibians as mediated by food quality and trophic interactions

Creator:: Scheessele, Erin A.
Abstract:: Ultraviolet-B radiation (UVB) is an abiotic stressor in both terrestrial and aquatic systems. The stratospheric ozone layer, depleted due to anthropogenic activities and the cause of elevated UVB at earth's surface over the last four decades, is predicted to recover by 2065. However, UVB levels in aquatic systems may continue...
Resource Type:: Dissertation
Full Text:: Food Quality and Trophic Interactions Abstract approved: Andrew R. Blaustein

Material Expressions of Class, Status and Authority amongst Commissioned Officers at Fort Yamhill and Fort Hoskins, Oregon, 1856-1866

Creator:: Eichelberger, Justin E.
Abstract:: During the 19th century the United States Army was a military institution characterized by a hierarchical system of authoritative, social and economic inequality between members of its different military grades. Although necessary for insuring military discipline within the Army this system of inequality also influenced the non-military social lives of...
Resource Type:: Dissertation
Full Text:: : ______________________________________________________ David R. Brauner During the 19th century the United States Army was a military

An econometric analysis of the Japanese import demand for U.S. forest products

Creator:: Niami, Farhad
Abstract:: Japan is the largest market for U.S. forest products. Therefore, export of wood products to this country is critical to the economic life of the forest industry in the U.S. and particularly for the Pacific Northwest. Hence, economic conditions and developments in Japan may significantly affect the volume of trade...
Resource Type:: Dissertation
Full Text:: Econometric Analysis of the Japanese Import Demand for U.S. Forest Products Abstract approved: R. Donald

A study of ticks (Acarina: Ixodidae) and chiggers (Trombiculidae) from two areas in western Oregon

Creator:: Easton, Emmett Richard
Abstract:: A study of the host range and distribution of ticks and chiggers (Acari) was undertaken in two contrasting forested areas of western Oregon. Acarines were sampled from host mammals which were trapped along line transects laid out in both areas, each consisting of 18 stations 50 feet apart. Hosts were...
Resource Type:: Dissertation
Full Text:: Privacy Abstract approved: VIP' R. L. Goulding A study of the host range and distribution of ticks and

Students as pro-social bystanders : opportunities, past behaviors, and intentions to intervene in sexual assault risk situations

Creator:: Hoxmeier, Jill C.
Abstract:: Sexual assault is a major public health concern in the U.S, and college students are particularly vulnerable to victimization. A health issue that affects nearly one in four women (Fisher, Cullen, & Turner, 2000; Karjane, Cullen, & Turner, 2005) and that is associated with severe negative health outcomes, including depression...
Resource Type:: Dissertation
Full Text:: : ______________________________________________________________________________ Brian R. Flay Sexual assault is a major public health concern in the U.S, and

Multiple stressors and amphibian population declines

Creator:: Hatch, Audrey C.
Abstract:: In the past decade, declines in amphibian populations have captured scientific and popular interest. The causes of the declines are likely to be complex and involve interactions between several environmental stressors. Using multifactorial experiments, I investigated the combined effects of several anthropogenic stressors on developing amphibians in Oregon, USA. In...
Resource Type:: Dissertation
Full Text:: pesticides were toxic to A. macrodaclylum in the presence of UV-B. Chiorpyrifos caused mortality in R

Temperature finestructure and microstructure observations in the coastal upwelling region off Oregon during the summer of 1974

Creator:: Marmorino, G. O.
Resource Type:: Dissertation
Full Text:: CTD data. Help at sea was provided by John Brubaker, Dennis Barstow, Tom Yao, Steve Wilcox, Stuart

A food habits study of the snowshoe hare, Lepus americanus washingtonii Baird, in western Oregon

Creator:: Mozejko, Albert
Resource Type:: Dissertation
Full Text:: : Redacted for Privacy Dr. R. M. Storm A food habits study of the snowshoe hare, Lepus_ americanus

Effect of chelate compounds on the iron nutrition of the bean, Phaseolus vulgaris L.

Creator:: Mason, John Leslie
Resource Type:: Dissertation
Full Text:: 1t-ped by Joann Brady ACKNOWLEDGEMENT The author wishes to thank Dr. R. O. Eelkeruren for his

Evaluation of endophyte-infected tall fescue products, their interaction with Senecio jacobaea in ruminants, and detoxification of alkaloids by ammoniation or ensiling after grinding

Creator:: Debessai, Woldu T.
Resource Type:: Dissertation
Full Text:: Detoxification of Alkaloids by Ammoniation or Ensiling after Grinding. Abstract approved: Peter R. Cheeke

Convergent margin magmatism in the central Andes and its near antipodes in western Indonesia : spatiotemporal and geochemical considerations

Creator:: Salisbury, Morgan J.
Abstract:: This dissertation combines volcanological research of three convergent continental margins. Chapters 1 and 5 are general introductions and conclusions, respectively. Chapter 2 examines the spatiotemporal development of the Altiplano-Puna volcanic complex in the Lípez region of southwest Bolivia, a locus of a major Neogene ignimbrite flare- up, yet the least...
Resource Type:: Dissertation
Full Text:: province Morgan J. Salisbury Brian R. Jicha Shanaka L. de Silva Brad S. Singer

From Micro to Macro: Insights into Biogeochemical Mechanisms that Shape Marine Systems

Creator:: Seabrook, Sarah
Abstract:: Biogeochemical mechanisms employed by key organisms, or symbiotic associations of organisms, transform the function and structure of their environment through processes recognized as ecosystem engineering. This dissertation seeks to investigate organism-ecosystem interactions that serve globally significant ecological functions in marine systems and impact how systems respond to environmental change. Using...
Resource Type:: Dissertation
Full Text:: : _______________________________________________ Andrew R. Thurber Biogeochemical mechanisms employed by key

Fundamental factors affecting germicidal activities of certain hypochlorite and quaternary ammonium compounds

Creator:: Miller, Donald Duane
Resource Type:: Dissertation

Techno-Economic Optimization and Environmental Impact Analysis for a Mixed-Mode Upstream and Midstream Forest Biomass to Bio-Products Supply Chain

Creator:: Mirkouei, Amin
Abstract:: Growing awareness and concern within society over the use of and reliance on fossil fuels has stimulated research efforts in identifying, developing, and selecting alternative energy sources and energy technologies. Bioenergy represents a promising replacement for conventional energy, due to reduced environmental impacts and broad applicability. Sustainable energy challenges, however,...
Resource Type:: Dissertation
Full Text:: Biomass to Bio-Products Supply Chain Abstract approved: Karl R. Haapala Growing awareness and

Academic women : individual considerations and structural forces in navigating academic organizations

Creator:: Almquist, Jennifer M.
Abstract:: This dissertation is situated as the third work in a series on academic women. In 1964, Jessie Bernard published Academic Women, which provided a comprehensive assessment of the status of women in academia. Two decades later, in 1987, Angela Simeone offered insight into attempts to achieve equity for women in...
Resource Type:: Dissertation
Full Text:: : _____________________________________________________ Nancy R. Rosenberger This dissertation is situated as the third work in a series on academic

Interrelationships among changes in flavor and aroma, and composition of stored strawberry juice concentrate

Creator:: Lundahl, David S.
Abstract:: Sensory evaluation and instrumental methods were applied to the evaluation of strawberry juice concentrate (68°Brix) stored at 20°C which had been produced both commercially (C-SJC) and in a pilot plant (SJC). Sensory evaluation included taste and aroma ratings by intensity scaling and time-intensity of taste, and visual colorimetry by matching...
Resource Type:: Dissertation
Full Text:: Stuart Lundahl AH Rights Reserved ACKNOWLEDGEMENTS I express my sincere gratitude to the two

Sensory Analysis and Genetic Mapping of Green Bean Flavor

Creator:: Wallace, Lyle T.
Abstract:: Green bean flavor has been studied since the 1960’s to better understand Blue Lake flavor in processed green beans in Oregon. Research by Stevens and colleagues showed that Blue Lake flavor could be reconstituted in a bland bean by adding 0.4ppm of 1-octen-3-ol and 1.6ppm of 3-hexen-1-ol. These two volatile...
Resource Type:: Dissertation
Full Text:: : ____________________________________________________ James R. Myers Green bean flavor has been studied since the 1960’s to better understand

Applying a Dynamic Time Warping Approach to Stratigraphic Correlation: Quaternary Magnetostratigraphy and Ediacaran–Cambrian Chemostratigraphy

Creator:: Hagen, Cedric J.
Abstract:: Magneto- and chemostratigraphic correlation underpins much of our understanding of Earth history, yet typical correlation techniques are neither quantitative nor objective. Within this dissertation, I detail my efforts to develop and apply dynamic programming-based algorithms that accomplish optimal and reproducible stratigraphic alignment. I apply these algorithms to three geologic intervals:...
Resource Type:: Dissertation
Full Text:: : _________________________________________________________ Jessica R. Creveling Magneto- and chemostratigraphic correlation underpins much of our

Exploring Novel Contrast Agents with Anthropomorphic Mesh Models in MCNP

Creator:: Garcia, Jacqueline K.
Abstract:: Breast cancer is the leading cancer in women with an estimated 13% of women in the United States developing a form of invasive breast cancer in her lifetime. The survival rate is estimated to be 85%, but the American Cancer Society estimates that early detection of breast cancer in the...
Resource Type:: Dissertation

The Deschutes Formation: evidence of extension-enhanced explosivity in the early High Cascades

Creator:: Pitcher, Bradley W.
Abstract:: The eruptive history of the Quaternary Cascades arc has been relatively well characterized. However, much less is known about the frequency and sizes of explosive eruptions produced by earlier stages of the arc. The Late Neogene Deschutes Formation of Central Oregon preserves a remarkable record of heightened pyroclastic activity during...
Resource Type:: Dissertation

Environmental contaminants in male river otters collected from Oregon and Washington, 1994-99, with reproductive organ hypoplasia observed in otter males

Creator:: Grove, Robert Allan
Abstract:: A large number of river otter (Lontra canadensis) males were collected from areas of high and low contaminant concentrations throughout western Oregon and Washington during the fall and winter of 1994-99. Few significant non-reproductive organ morphometric differences were found in the large series of male otters collected, except for adrenal...
Resource Type:: Dissertation
Full Text:: : Donald R. Buhler A large number of river otter (Lontra canadensis) males were collected from areas of

Environmental contaminants in male river otters collected from Oregon and Washington, 1994-99, with reproductive organ hypoplasia observed in otter males

Creator:: Grove, Robert Allan
Abstract:: A large number of river otter (Lontra canadensis) males were collected from areas of high and low contaminant concentrations throughout western Oregon and Washington during the fall and winter of 1994-99. Few significant non-reproductive organ morphometric differences were found in the large series of male otters collected, except for adrenal...
Resource Type:: Dissertation
Full Text:: Hypoplasia Observed in Otter Males. Abstract approved Donald R. Buhier A large number of river otter

A critical analysis of wildlife conservation in Oregon

Creator:: Rymon, Larry Maring
Abstract:: This analysis is the study of Oregon's wildlife resources from the period prior to white settlement up to the present time, including critical projections, based on present trends and expected conditions for both human and wildlife populations in the state up to the year 2010. Prior to white settlement Oregon...
Resource Type:: Dissertation
Full Text:: IN OREGON Abstract approved: Redacted for Privacy R. J. Mc is This analysis is the study of

Adolescent sexual initiation : a predictor of adult female romantic attachment?

Creator:: Waggoner, April R.
Abstract:: There is a knowledge gap concerning the outcomes of early adolescent sexual initiation (ASI). In particular, the influence of early ASI upon adult attachment is unknown. A multiple regression study was conducted to address this knowledge gap. Adult partner/spouse attachment was the criterion variable, and the predictor variables included both...
Resource Type:: Dissertation
Full Text:: AN ABSTRACT OF THE DISSERTATION OF April R

Geographic variations in water quality and recreational use along the upper Wallowa River and selected tributaries

Creator:: McDowell, Theodore R.
Abstract:: Physical, chemical and bacterial water quality parameters of the upper Wallowa River were sampled periodically between July 2, 1978 and June 9, 1979 at nine stream and lake sampling sites. Water upstream from Wallowa Lake was typified by low nutrient concentrations ( generally below detectable limits except for nitrates), low....
Resource Type:: Dissertation
Full Text:: Use Along the Upper Wallowa River and Selected Tributaries AN ABSTRACT OF THE THESIS OF Theodore R

Economic considerations for expanded feeding of livestock in the Pacific Northwest

Creator:: Grimshaw, Paul R.
Abstract:: Several agricultural and related industry groups in the Pacific Coast states have expressed concern about the competitive position of these states in the production of feed grains and livestock products. This study was directed toward the investigation of these concerns. In order to permit the real world situation, with its...
Resource Type:: Dissertation
Full Text:: THE PACIFIC NORTHWEST -' n—r Abstract approved: ,

Thermal Ecology and Population Dynamics of Female Greater Sage-Grouse Following Wildfire in the Trout Creek Mountains of Oregon and Nevada

Creator:: Anthony, Christopher R.
Abstract:: The greater sage-grouse (Centrocercus urophasianus; hereafter, sage-grouse) is a ground nesting gallinaceous bird that requires large contiguous patches of sagebrush. Sage-grouse populations have declined, especially in the Great Basin where changes in wildfire regimes and the invasion of annual grasses have contributed to habitat loss and fragmentation. During the last...
Resource Type:: Dissertation
Full Text:: ., B. A. Bradley, C. S. Brown, C. D’Antonio, M. J. Germino, J. B. Grace, S. P. Hardegree, R. F

Patterns of crown damage within a large wildfire in the Klamath-Siskiyou bioregion

Creator:: Thompson, Jonathan R.
Abstract:: The 2002 Biscuit Fire burned through more than 200,000 ha of mixed conifer/ evergreen hardwood forests in southwestern Oregon and northwestern California. The remarkable size of the fire and the diversity of conditions through which it burned provided an opportunity to analyze the correlates of burn severity across vegetation types...
Resource Type:: Dissertation
Full Text:: THE DISSERTATION OF Jonathan R. Thompson for the degree of Doctor of Philosophy in Forest Science

Rational Fuel Design for Low Temperature Internal Combustion Engines

Creator:: Daly, Shane R.
Abstract:: This work introduces a new methodology to design transportation fuels offering improved efficiency and reduced emissions, aimed to complement both traditional and emerging engine technologies. Many of these emerging technologies are centered around exploiting low temperature combustion (LTC) strategies that offer improved efficiency and reduced emissions. However, a standardized fuel...
Resource Type:: Dissertation

Combining ability and associations of agronomic traits involving three sources of dwarfism in wheat (Triticum aestivum, L. em Thell)

Creator:: Maya de Leon, Jose Luis
Abstract:: Three genetically different dwarf cultivars of spring wheat were evaluated as potential sources of short stature to use in a wheat improvement program. The study involved a five parent diallel cross which included a semidwarf, a standard height and three dwarf cultivars. The genetic sources of dwarfism included a Norma...
Resource Type:: Dissertation
Full Text:: sincerely thank Dr. W. H. Foote, Dr. R. V. Frakes, Dr. R. J. Metzger, Dr. T. C. Moore, and Dr. R. L

Limnology of Upper Klamath Lake, Oregon, with emphasis on benthos

Creator:: Hazel, Charles R.
Abstract:: Aspects of the limnology and benthic ecology of Upper Klamath Lake, Oregon, are described emphasizing those features that identify its uniqueness. The lake is large, shallow, and characterized by nuisance abundances of Aphanizomenon flos-aquae and midge flies. Results of this study indicate that it does not stratify and dissolved oxygen...
Resource Type:: Dissertation

Patterns and mechanisms : postcopulatory sexual selection and sexual conflict in a novel mating system

Creator:: Friesen, Christopher R.
Abstract:: Postcopulatory sexual selection—sperm competition and cryptic female choice—has become a major area of research over the past 40 years. Within this field there are many outstanding questions at every level of analysis, from proximate to ultimate. The fitness consequences for both sexes in the period after copulation and before fertilization...
Resource Type:: Dissertation
Full Text:: AN ABSTRACT OF THE DISSERTATION OF Christopher R. Friesen for the degree of Doctor of Philosophy

Thermal ecology of the garter snakes Thamnophis sirtalis concinnus (Hallowell) and Thamnophis ordinoides (Baird & Girard)

Creator:: Stewart, Glenn R.
Abstract:: In recent years, studies dealing with temperature regulation, temperature sensitivity, and physiological responses to temperature in lizards and other reptiles have increased tremendously. It is notable that snakes have been largely ignored in such studies. This no doubt is due to their less direct relationship to ancestral endotherms. However, problems...
Resource Type:: Dissertation
Full Text:: concinnus (Hallowell) and Thamnophis ordinoides (Baird & Girard) AN ABSTRACT OF THE THESIS OF GLENN R

C-SHIFT, Quantile Theory, and Assessing Monotonicity

Creator:: Logan, Paul R.
Abstract:: DNA microarray technology is a powerful tool for analyzing patterns in gene expression data for thousands of genes. Due to a number of systematic variations in microarray experiments, the raw gene expression data is often obfuscated by undesirable technical noises. Various normalization techniques were designed in an attempt to remove...
Resource Type:: Dissertation
Full Text:: -0.5 0 0.5 1 Empirical -1 -0.5 0 0.5 1 R an k 0 0.5 1 1.5 2 10 5 0.16939 -1 -0.5 0 0.5 1

Human Alteration of a Neotropical Landscape Drives Long-term Changes in its Forest Bird Communities

Creator:: Curtis, Jenna R.
Abstract:: Human alteration of natural landscapes leads to biodiversity loss, often from a combination of area effects and fragmentation effects. Smaller habitat patches support fewer species than large ones and incur additional consequences from isolation. Efforts to preempt biodiversity loss from insular habitat fragments are complicated by individualistic species responses and...
Resource Type:: Dissertation
Full Text:: AN ABSTRACT OF THE DISSERTATION OF Jenna R

The relationship between competitive recreation and personal adjustment

Creator:: Klar, Lawrence R.
Resource Type:: Dissertation

Cellular Recognition, Division, and Proliferation in the Cnidarian-Dinoflagellate Symbiosis

Creator:: Tivey, Trevor R.
Abstract:: Cnidarians and their symbiotic dinoflagellates form a productive mutualism that shapes marine environments. In this symbiosis, dinoflagellate species from the family Symbiodiniacea reside within cnidarian host gastrodermal cells and provide the host with photosynthetically fixed carbon in exchange for host metabolites. This nutritional exchange allows both partners to thrive in...
Resource Type:: Dissertation
Full Text:: AN ABSTRACT OF THE DISSERTATION OF Trevor R. Tivey for the degree of Doctor of Philosophy in

The influence of ionizing radiation, photoperiod, and environmental temperature on cell proliferation in the intestinal epithelium of the rough-skinned newt (Taricha granulosa)

Creator:: Filipy, R. E.
Abstract:: Kinetics of cell division in the intestinal epithelial proliferative cells (cell nests) of the rough-skinned newt, Taricha granulosa, were studied using tritiated thymidine autoradiography and the mitotic arresting properties of colcemid. Percent labeled mitoses (PLM) curves were drawn from the autoradiographic data from two separate experiments in which the newts...
Resource Type:: Dissertation
Full Text:: maintained at low environmental temperatures (4°C) and in newts which had been exposed to 1000 R X

Lichen communities and caribou habitat in Denali National Park and Preserve, Alaska, USA

Creator:: Nelson, Peter R.
Abstract:: Lichens play many important roles in subarctic terrestrial ecosystems by fixing nitrogen, colonizing rock and gravel, stabilizing otherwise bare soil, adding significantly to vegetation biodiversity and serving as the primary food for caribou in the winter. In these chapters, I analyzed lichen community and ecological trait structure along environmental gradients,...
Resource Type:: Dissertation
Full Text:: . _______________________________________________________________________ AN ABSTRACT OF THE DISSERTATION OF Peter R. Nelson for the

Survival Assessment, Inactivation Kinetics Models, and Farm-to-Table Quantitative Risk Analysis of Food Pathogens

Creator:: Deng, Kai
Abstract:: About 48 million cases of Foodborne illnesses (FBIs) are estimated to occur every year in the US. These are diseases caused by contamination of foods with bacteria, viruses, protozoa, parasites and toxic chemicals. Clostridium difficile infections (CDIs) are an important health-care and community associated problem. Since C. difficile spores have...
Resource Type:: Dissertation
Full Text:: the Bosun Health Food R&D Center of Guangdong located in Guangzhou, my hometown in China. Dr. Torres

The large-scale coastal wind field and sea level response along the west coast of North America

Creator:: Halliwell, George R.
Resource Type:: Dissertation
Full Text:: AN ABSTRACT OF THE THESIS OF George R. Halliwell, Jr. for the

Phylogeny of the "Chaoboriform" genera

Creator:: Ogawa, Joshua R.
Abstract:: The phantom midges (Diptera: Chaoboridae) are a relatively small fly family composed of 50 extant species in six genera. Larvae are of interest to limnologists and ecologists because of their tolerance to toxicants, predatory avoidance strategies, and the role chaoborids play in zooplankton community dynamics. Relative to mosquitoes, systematists have...
Resource Type:: Dissertation
Full Text:: DISSERTATION OF Joshua R. Ogawa for the degree of Doctor of Philosophy in Zoology presented on June

Who Benefits from Development Aid? Exploring Agroforestry Technology Adoption, Food Security, and Path Dependence in Rural Tanzania

Creator:: Bruck, Sonia R.
Abstract:: Rural farmers in Tanzania depend on subsistence agriculture for their livelihood. Poor soil conditions, and the danger of drought, increases the risk of cyclical poverty conditions. Aid organizations, including the World Agroforestry Centre (ICRAF) and the Millennium Development Projects (MDP), as well as industrial tobacco industry, have provided development programs...
Resource Type:: Dissertation
Full Text:: DISSERTATION OF Sonia R. Bruck for the degree of Doctor of Philosophy in Forest Ecosystems and Society

The application of spatial data analysis and visualization in the development of landscape indicators to assess stream conditions

Creator:: Buckley, Aileen R.
Abstract:: The main theme of this research is the application of geographic techniques in a study involving environmental monitoring and analysis of the associations between landscape and in-stream characteristics in the Pacific Northwest. The geographic techniques used in this study include (1) geographic information systems (GIS) coupled with statistical analysis and...
Resource Type:: Dissertation
Full Text:: AN ABSTRACT OF THE THESIS OF Aileen R. Bucldey for the degree

Modeling Forest Response to Changing Climate Conditions in Western North America

Creator:: Hawkins, Linnia R.
Abstract:: Forests play an integral role in the global carbon cycle, regulating the atmospheric CO₂ concentration by sequestering nearly one third of anthropogenic carbon emissions and storing carbon for centuries. Forest ecosystems are integrated into the culture, ecology, and economy of western North America, supporting wildlife habitat, local economies, recreation, and...
Resource Type:: Dissertation
Full Text:: AN ABSTRACT OF THE DISSERTATION OF Linnia R. Hawkins

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