Index Catalog // ScholarsArchive@OSU

The effects of single and multiple pathogen and parasite infections on juvenile chinook and coho salmon during early marine residency

Creator:: Sandell, Todd A.
Abstract:: Nearly 3000 juvenile Chinook (Oncorhynchus tshawytscha) and coho (O. kisutch) salmon captured in nearshore waters off the coasts of Washington and Oregon from 1999-2004 were tested for infection by Renibacterium salmoninarum, Nanophyetus salmincola, and skin metacercariae. First, three quantitative PCR primer/probe sets were compared for detection of R. salmoninarum; amplification...
Resource Type:: Dissertation
Full Text:: always been needed to control my predilection for obfuscation. I am grateful to Alec Maule and Carl

Low Maintenance Strategies and Challenges within Oregon School Landscapes

Creator:: Gould, Micah A.
Abstract:: Ornamental landscapes require considerable amounts of inputs, including but not limited to irrigation, mowing or pruning, fertilization, and pest management. However, school systems have limited budgets, which reduce their access to resources and labor hours. Therefore, the objective of this project is to identify ground covers that can compete with...
Resource Type:: Masters Thesis
Full Text:: Maintenance Strategies and Challenges within Oregon School Landscapes Abstract approved: Alec

The feasibility of applying air photo interpretation to the locating, analyzing and development of wind power sites

Creator:: Maule, Peter Anthony
Abstract:: If wind power is to become a viable energy alternative, a rapid and reliable cost effective methodology must be established, whereby large areas can be surveyed for windy sites and those sites can be evaluated. Based primarily on locating wind deformed vegetation, this paper establishes the feasibility of using air...
Resource Type:: Capstone Project
Full Text:: Locating, Analyzing and Development of Wind Power Sites by Peter Anthony Maule A RESEARCH PAPER

Managing Microdochium Patch Using Non-Traditional Fungicides on Annual Bluegrass Putting Greens

Creator:: Mattox, Clint M.
Abstract:: Currently, fungicide applications are the predominant method of control for the cool weather pathogen Microdochium patch (Microdochium nivale). Increasing pesticide restrictions have generated concern regarding management of Microdochium patch. Three separate field trials exploring non-traditional fungicides were conducted between 2013 and 2015 on an annual bluegrass (Poa annua L.) sand-based...
Resource Type:: Masters Thesis
Full Text:: Putting Greens Abstract approved: Alec Kowalewski

Suppression of Microdochium Patch on Annual Bluegrass Putting Greens using Iron Sulfate, Phosphorous Acid, Sulfur, and Mineral Oil

Creator:: Mattox, Clint M.
Abstract:: Managing Microdochium patch on intensively manicured annual bluegrass putting greens is a challenge for turfgrass professionals in cool-humid climates similar to the Pacific Northwest. Fungicides are the predominant means to mitigate damage caused by this fungal pathogen, however pesticide restrictions are making it even more challenging to suppress Microdochium patch....
Resource Type:: Dissertation
Full Text:: : ______________________________________________________ Alec R. Kowalewski Managing Microdochium patch on intensively manicured annual

Non-Chemical Approaches to Managing Annual Bluegrass (Poa annua L.)

Creator:: Cain, Alyssa B.
Abstract:: Annual bluegrass (Poa annua L.) is a prolific annual grassy weed that can be found worldwide in most landscapes. Known for its ability to produce seedhead at low heights (0.32 cm), thrive in over-maintained areas, and germinate anywhere, annual bluegrass is a highly invasive weed. Due to annual bluegrass’ persistence,...
Resource Type:: Masters Thesis
Full Text:: : ____________________________________________________________________ Alec R. Kowalewski Annual bluegrass (Poa annua L.) is a prolific annual grassy weed that can

Columbia River salmonid outmigration : McNary Dam passage and enhanced smolt quality : completion report, April 1, 1985

Creator:: Schreck, Carl B. and Li, Hiram W.
Abstract:: We evaluated the effects of the McNary Dam transportation system on emigrating fall and spring chinook smolts using physiological indices of stress (e.g., plasma cortisol, hepatic glycogen, leucocrit, interrenal cell nuclear diameter) and performance tests (e.g., saltwater challenge, secondary stress challenge, disease resistance). We also conducted controlled experiments in a...
Resource Type:: Technical Report
Full Text:: Investigator Hiram W. Li, Co-Principal Investigator Alec G. Maule, Project Leade r C. Samuel Bradford

VallotaEastmanAlecO2017.pdf

Creator:: Vallota-Eastman, Alec
Abstract:: Cyanophage are viruses that infect cyanobacteria, photosynthetic microorganisms which are known to produce several anticancer and antibacterial chemical compounds. Cyanophage are significant members of microbial communities in marine and freshwater environments. There has been significant difficulty inventorying marine and freshwater cyanophage, however, due to the difficulty in cultivating their hosts....
Full Text:: Alec Vallota-Eastman1, Kerry McPhail2, Rebecca Vega-Thurber3 Bioresource Research1, College of

Thesis.pptx

Creator:: Vallota-Eastman, Alec
Abstract:: Cyanophage are viruses that infect cyanobacteria, photosynthetic microorganisms which are known to produce several anticancer and antibacterial chemical compounds. Cyanophage are significant members of microbial communities in marine and freshwater environments. There has been significant difficulty inventorying marine and freshwater cyanophage, however, due to the difficulty in cultivating their hosts....
Full Text:: marine cyanophage as revealed by sequence analysis of various phage marker genes Alec Vallota-Eastman1

Exploring Chromodomain Genes in the Fungus Fusarium graminearum Through Targeted Genetic Manipulation

Creator:: Peters, Alec
Abstract:: DNA segments in the fungus Fusarium graminearum were identified as possible genes encoding for chromodomain proteins (CDPs), and targeted for genetic manipulation. Targeted single-gene deletion strains, as wells as GFP-S tag fusion strains, were generated from wildtype F. graminearum protoplasts, and verified strains were screened for phenotypic differences, such as...
Resource Type:: Honors College Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Alec Peters for the

TextGen : an exemplary generator for generative programming

Creator:: Maki, Alec
Abstract:: Generative programming is a paradigm that seeks to automate the manufacture of software products the same way other industries automated the manufacture of consumer, electric, and mechanical products. I examine how meta-programming fits into the context of generative programming and, along the way, expose theoretic and taxonomic deficiencies. In some...
Resource Type:: Capstone Project
Full Text:: Programming By Alec Maki Submitted to Oregon State University In partial fulfillment of the

Examining Footwear Wear Patterns for Injury Prevention

Creator:: Westbrook, Alec R.
Abstract:: Tracking footwear wear patterns is vital to the footwear industry. In the game of tennis, there are several court surfaces that produce unique wear patterns on footwear that are constantly changing according to the following factors: level of competition, level of experience, coordination, age, height, weight, and more. By tracking...
Resource Type:: Honors College Thesis
Full Text:: Microsoft Word - Alec Westbrook Thesis Rev. 1.docx Examining

The Development and Implementation of Interactive Virtual Laboratories

Creator:: Bowen, Alec S.
Abstract:: The Interactive Virtual Laboratories (IVLs) are a series of two-dimensional simulations designed to help students conceptually learn difficult concepts in thermodynamics. Three studies were performed to help elucidate how the IVLs affect student learning. In the first study, eight students were observed while completing one of the IVLs. The students...
Resource Type:: Honors College Thesis
Full Text:: ABSTRACT OF THE THESIS OF Alec S. Bowen for the degree of Honors Baccalaureate of Science in Chemical

Effects of Biochar-Based Seed Coatings on Seed Germination and Seedling Vigor of California Brome (Bromus carinatus L.) and Blue Wildrye (Elymus glaucus L.)

Creator:: James, Matthew Scott
Abstract:: California brome and blue wildrye are important native grass species in the Pacific Northwest. However, both species have been reported to have low emergence under less than favorable field conditions. Seed coating is used to improve emergence and stand establishment of various crops. Three studies were carried out to determine...
Resource Type:: Masters Thesis
Full Text:: : _______________________________________________________ Sabry G. Elias California brome and blue wildrye are important native grass species in the

2019 Evaluation of Online Presence and Pricing of Oregon Coast Tour Operators

Creator:: Phillips, Miles and Youngblood, Alec
Abstract:: This report describes results of the third year of an evaluation of the online presence and prices of companies on the Oregon coast that offer tours for kayaking, salmon fishing and whale watching. It also compares those 2019 results with findings from 2017 and 2018. Our aim was to see...
Resource Type:: Technical Report
Full Text:: Charters (new name) pastimefishingadventures.com newportoregonfishingcharter.com Tillamook Siggi-G Ocean

Response of Roughstalk Bluegrass (Poa trivialis L.) to Waterlogging Stress

Creator:: Liu, Mingyang
Abstract:: Roughstalk bluegrass (Poa trivialis L.) (RB) is a weed species that increased very quickly in grass seed production fields of the Willamette Valley. The invasion of RB in grass seed crops often occurs in waterlogged soils. In waterlogged areas, RB exhibited better competitiveness and had greater population densities than other...
Resource Type:: Dissertation
Full Text:: : ______________________________________________________ Carol A. Mallory-Smith Andrew G. Hulting Roughstalk bluegrass (Poa trivialis L

Grazing Effects on Fuels and Plant Community Characteristics across Three Community Types in Wyoming Big Sagebrush Steppe

Creator:: Thomas, Tyler W.
Abstract:: Livestock grazing is the prominent land use in Wyoming big sagebrush (Artemisia tridentata ssp. wyomingensis [Beetle & A. Young] S.L. Welsh) steppe and has been present since the late 1800’s. There have been calls to remove livestock grazing from rangelands as historic grazing practices resulted in the degradation of some...
Resource Type:: Masters Thesis
Full Text:: finishing my program. Dr. John Lambrinos and Dr. Alec Kowalewski, thank you for your help and guidance

The Implementation of Passive RFID Tags to Sample Volumetric Water Content for an Autonomous Irrigation System

Creator:: Guo, Matthew D.
Abstract:: The agricultural industry in the Western United States continues to possess issues of overwatering, accounting for over 80% of consumed water per year in the country. While technologies such as satellite imaging and sensor networks have slowly improved irrigation Best Management Practices to reduce superfluous water consumption, limitations associated with...
Resource Type:: Honors College Thesis
Full Text:: _____________________________________________________________________ Alec Kowalewski, Committee Member, representing College of Agricultural Sciences

Improving Best Management Practices for Potato Production in the Columbia Basin : An Evaluation of Essential Oils for Control of Verticillium Wilt and the Fate of Chloride in the System

Creator:: Light, Sarah Elizabeth
Abstract:: Although the potato (Solanum tuberosum L.) is a global crop, few growing regions rival the high yields of the Columbia Basin of Eastern Oregon and Washington. Two research projects were conducted in Hermiston, OR to contribute to best management practices for the region. The first project evaluated the efficacy of...
Resource Type:: Masters Thesis
Full Text:: Cl concentrations for KCl treatments applied in September were 1.1 g kg-1 in tubers and 15 g kg-1

Restoration of Annual Grass-invaded Landscapes in the Sagebrush Steppe using Perennial Grass Seed Technologies and Wyoming Big Sagebrush Transplanting

Creator:: Holfus, Corinna M.
Abstract:: Within the sagebrush steppe ecosystem, invasive annual grasses are of growing management concern as they outcompete native vegetation, change the fundamental nutrient cycling processes, decrease biodiversity, and increase frequency of wildfires. The most widely used and effective management tool to decrease invasive annual grass abundance, is the use of pre-emergent...
Resource Type:: Masters Thesis
Full Text:: valued in my project. Dr. Alec Kowalewski and Dr. John Lambrinos, thank you for your guidance and

Perennial Ryegrass (Lolium perenne L.) Cultivar Response to a Postemergence Application of Mesotrione

Creator:: Hinds-Cook, Barbara J.
Abstract:: Perennial ryegrass (Lolium perenne L.) is a widely grown cool season, bunch type, short lived perennial grass that is native to Europe, Asia, and North Africa, but has been adapted globally. Perennial ryegrass is quick to establish, has a long growing season, and produces high seed yield and forage or...
Resource Type:: Masters Thesis
Full Text:: results. I am grateful to Dr. Andrew Hulting, Dr. Alec Kowalewski, and Dr. Ed Peachey for serving on my

Practical lawn care for western Oregon

Creator:: Voderberg, Doug, Kowalewski, Alec, and Oregon State University. Extension Service
Abstract:: Describes options for different levels of lawn care – from keeping a lawn lush and green year-round to allowing it to go partially dormant in the summer. Discusses mowing, watering, fertilizing, and dethatching, and gives recommended schedules for each. Includes a list of additional resources.
Resource Type:: Technical Report
Full Text:: e v i s e d A u g u s t 2 0 1 4 Doug Voderberg and Alec Kowalewski Doug Voderberg is a graduate

Seed quality and plant establishment studies of seashore paspalum (Paspalum vaginatum Sw.)

Creator:: Baker, Stanley D.
Abstract:: Seashore paspalum (Paspalum vaginatum Sw.) is an important warm-season perennial turfgrass, known for its tolerance to salinity. Turfgrass is used for homes, municipalities, sod farms, resorts, and sports fields. Seashore paspalum has historically been planted in sub-tropical and tropical climates because of its heat tolerance. Seashore paspalum could become an...
Resource Type:: Dissertation
Full Text:: . Dr. Alec Kowalewski’s thoughtful and thorough analysis guided me through the intricacies of turf

Cultural controls for suppressing Phytophthora cinnamomi root rot of blueberry

Creator:: Yeo, John R.
Abstract:: Phytophthora cinnamomi is a soilborne pathogen that causes root rot disease of highbush blueberry (Vaccinium corymbosum L.). When new installations of susceptible blueberry cultivars are infected with P. cinnamomi, plants often fail to grow significant new tissue, greatly reducing yields over the life of the planting. Chemical fungicides are available...
Resource Type:: Dissertation
Full Text:: only G. virens GL‐21 increased the stem diameter and only P. corrugate increased leaf number. In

A Linear Mixed Model Framework for Spatio-Temporal Random Processes using the Separable and Product-Sum Covariance Structures

Creator:: Dumelle, Michael J.
Abstract:: We describe spatio-temporal random processes using linear mixed models and discuss estimation, inference, and prediction under this formulation. We show how many commonly used covariances are special cases of this more general framework and pay special attention to the separable and product-sum covariances. The linear mixed model formulation facilitates straightforward...
Resource Type:: Dissertation
Full Text:: , are so grateful. I want to thank my committee members from outside the Statistics Department, Alec

Predicting Help-Seeking Attitudes and Intentions and Life Satisfaction of First-Generation South Asian Americans Based on Acculturation Levels, Select Demographics, and Forms of Racial Stereotyping

Creator:: Michaels, Krupali S.
Abstract:: The literature on first-generation South Asian American (SAA) mental health is limited despite the increased focus of studies on help-seeking behaviors and subjective well-being over the past decade. Therefore, we designed a web-based survey seeking to address two research questions. Research Question 1 informed Study 1 of this dissertation project:...
Resource Type:: Dissertation
Full Text:: . Edward Ewe, Dr. Cazares-Cervantes, and Dr. Alec Kowalewski. I am so grateful for your guidance

Activated carbon incorporated into herbicide protection pods as a seed amendment technology for revegetation

Creator:: Clenet, Danielle R.
Abstract:: Reestablishing native perennial vegetation in annual grass-invaded rangelands is critical to restoring ecosystems, especially following wildfires. Controlling invasive annual grasses is essential to increasing revegetation success; however, pre-emergent herbicides used to control annual grasses prohibit immediate seeding due to non-target herbicide damage. Thus, seeding is often delayed one year following...
Resource Type:: Masters Thesis
Full Text:: constructive review while serving as my committee and Alec Kowalewski for serving as my graduate committee

Metagenomics, barcoding, and metabarcoding statistical analysis to facilitate integrative genomic studies of microbial and eukaryotic assemblages

Creator:: Senn, Savanah
Abstract:: The body of work aims to contribute to the area of Quantitative analysis in Environmental Sciences, and is focused on the microbiome. The underlying theme for the dissertation is methods and workflow. The unique bioinformatics workflow used for the analysis of genomic data was used to answer distinct and pressing...
Resource Type:: Dissertation
Full Text:: ACKNOWLEDGEMENTS The author expresses sincere appreciation to my graduate committee members, Alec Kowalewski

Making Sense of Counseling and Counselor Training in the Chinese Context: Two IPA Studies on U.S.-Trained Chinese Counselors’ Experiences Practicing in China

Creator:: Shi, Yun
Abstract:: Mental health disorders are the leading cause of disability worldwide. The strong need for mental health services has prompted intensive global efforts to develop, evaluate, and deliver effective mental health treatment, especially for low- and middle-income countries. The counseling profession in the United States has responded to this global need...
Resource Type:: Dissertation
Full Text:: Experiential Statements………………………………………………………………………...139 Appendix G: Manuscript 1 Personal Experiential

Investigation of polycyclic aromatic hydrocarbons (PAHs) transport by suspended particulate matter (SPM) in the lower Columbia River and its estuary

Creator:: Gregg, Tiffany
Abstract:: This study aims to improve knowledge of how suspended particulate matter (SPM) affects hydrophobic contaminant transport in the lower Columbia River and its estuary, using polycyclic aromatic hydrocarbons (PAHs) as model compounds. It is hypothesized that PAHs are transported to the estuarine turbidity maximum (ETM), a prime feeding zone in...
Resource Type:: Masters Thesis
Full Text:: : ________________________________________________________________________ Fredrick G. Prahl This study aims to improve knowledge of how suspended particulate matter

Blended Teaching in School-based Agriculture Education: An Exploration of Teacher Beliefs and Practices

Creator:: Milliken, D. Brett
Abstract:: The purpose of this study was to explore the lived experiences of school-based agriculture education (SBAE) teachers who self-identified as blended pedagogues. This study specifically focused on SBAE teachers' beliefs and how those beliefs influence their blended teaching classroom practice. Teacher beliefs are personal, subjective, and temporally and contextually stable....
Resource Type:: Dissertation
Full Text:: zone. I appreciate the work of my committee members Dr. Amanda Kibler, Dr. Alec Kowalewski, Dr. Josh

Managing adult hatchery summer steelhead for a recreational fishery with reduced hatchery and wild interactions

Creator:: Schemmel, Eva M.
Abstract:: Hatcheries whose purpose is to provide for a recreational fishery must minimize impacts on wild fishes. Management to reduce hatchery and wild interactions is especially important on river systems that contain Endangered Species Act (ESA) listed species. I examined adult hatchery summer steelhead, Oncorhynchus mykiss, behavior, current management and a...
Resource Type:: Masters Thesis
Full Text:: and Wildlife of Oregon State University, the Thomas G. Scott Scholarship, the Henry Mastin Travel

Spring Nitrogen, Plant Growth Regulator, and Defoliation Effects on Seed Production in Two Fine Fescue (Festuca rubra L.) Species

Creator:: Anderson, Nicole P.
Abstract:: One important cool-season perennial grass seed crop grown in Oregon is fine fescue (Festuca rubra L.). Open-field burning has been used for many decades to manage pests, cycle nutrients, and stabilize yield, in fine fescue seed fields, especially as stands age. Legislative restrictions currently limit open-field burning to 6,070 hectares...
Resource Type:: Dissertation
Full Text:: : ______________________________________________________ Thomas G. Chastain One important cool-season perennial grass seed crop grown in Oregon is

Light detection and ranging (LiDAR) : what we can and cannot see in the forest for the trees

Creator:: Edson, Curtis B.
Abstract:: Recently concerns over anthropogenic carbon pollution have received increased global attention and research in forest biomass and carbon sequestration has gained momentum. Light Detection and Ranging (LiDAR) remote sensing has in the last decade demonstrated forest measurement and biomass estimation potential. The project objective was to compare LiDAR forest biomass...
Resource Type:: Dissertation
Full Text:: . Abstract approved: _____________________________________________________________________ Michael G

Impacts of microbial chemical interactions on marine plankton physiology

Creator:: Moore, Eric R.
Abstract:: The bioavailability of chemical compounds in the marine environment fundamentally influences the growth and physiology of microorganisms. Organic and inorganic chemicals that are produced by some marine plankton can be consumed by other plankton for energy production, growth, or to initiate essential physiological processes. Cultures of the diatom Thalassiosira pseudonana,...
Resource Type:: Dissertation
Full Text:: am incredibly grateful to Brianna Bullington, Jordan Coelho, Alec Weaver, Cleo Davie-Martin, Alex

Influence of Political Liberalism on Contracting Prison Health Care

Creator:: Yarnall, Robert G.
Abstract:: Studies on prison contracting have typically focused on the privatization of entire facilities and carceral services offered to inmates. There has been limited research, however, as to how political ideology influences the extent to which state prisons contract out health care services. There also appears to be a need for...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Robert G. Yarnall for the

A qualitative analysis of clinical records from a trauma response program for families exposed to violence

Creator:: Behan, Kathleen G.
Abstract:: This dissertation is a qualitative secondary content analysis of clinical records collected for the Spokane Safe Start Project in Spokane, Washington, a program designed to offset trauma in children exposed to domestic and intimate partner violence (IPV). The Centers for Disease Control and the World Health Organization have identified intimate...
Resource Type:: Dissertation
Full Text:: ABSTRACT OF THE DISSERTATION OF Kathleen G. Behan for the degree of Doctor of Philosophy in Human

Comparing Migratory Patterns and Survival Between Wild and Wild Fish Surrogate Juvenile Spring Chinook Salmon (Oncorhynchus tshawytscha)

Creator:: Pollock, Amanda M. M.
Abstract:: Anadromous salmonid populations in the Pacific Northwest have declined over the past 150 years. In 1999, wild spring Chinook salmon (Oncorhynchus tshawytscha) were federally listed as threatened within the Willamette Basin, OR. Currently, practices to restore wild populations in the upper Willamette Basin involve trapping wild adults at the base...
Resource Type:: Masters Thesis
Full Text:: reduced survival in fish (Maule et al. 1989). Warm water temperatures can increase infection rates while

An evaluation of orange and clear traps with pear ester to monitor codling moth (Lepidoptera: Tortricidae) in apple orchards, Evaluación de trampas naranjas y transparentes con éster de pera para monitorear la polilla de la manzana (Lepidoptera: Tortricidae) en huertos de manzano

Creator:: Barros-Parada, Wilson, Knight, Alan L., Basoalto, Esteban, and Fuentes-Contreras, Eduardo
Abstract:: Studies were conducted to evaluate the use of several trap-lure combinations to improve the monitoring of codling moth, Cydia pomonella (L.) (Lepidoptera: Tortricidae), in apple, Malus domestica Bordk. The treatments involved the use of clear, orange, and white traps baited with one or more of the following attractants: the major...
Resource Type:: Article
Full Text:: untreated orchards in the Maule Region (Chile). In Washington State, the PE+AA lures caught more females

Local Seismicity Recorded by ChilePEPPER : Implications for Dynamic Accretionary Prism Response and Long-term Prism Evolution

Creator:: de Moor, Alexander
Abstract:: To investigate the dynamic response of the outer accretionary wedge updip from the patch of greatest slip during the Mw8.8 2010 Maule earthquake, 10 Ocean Bottom Seismometers (OBS) were deployed from May 2012 to March 2013 in a small array with an inter-instrument spacing of ~10 km. Nine instruments were...
Resource Type:: Masters Thesis
Full Text:: the patch of greatest slip during the Mw8.8 2010 Maule earthquake, 10 Ocean Bottom Seismometers (OBS

Evaluation of transgenes for stress tolerance, lignin modification, and growth enhancement in poplar

Creator:: Elias, Ani Anna
Abstract:: We evaluated genes previously identified from a large scale functional genomics screen for their potential value to help enhance carbon sequestration in planted trees. We used poplar as a model tree species because of its abundant genetic variation, ease of gene transfer, and availability of large databases for genomic, anatomical,...
Resource Type:: Masters Thesis
Full Text:: in quantitative analysis. I am thankful to my other committee members, Dr. Jennifer G. Kling and

Anomaly Detection: Theory, Explanation and User Feedback

Creator:: Siddiqui, Md Amran
Abstract:: Anomaly detection has been used in variety of applications in practice, including cyber-security, fraud detection and detecting faults in safety critical systems, etc. Anomaly detectors produce a ranked list of statistical anomalies, which are typically examined by human analysts in order to extract the actual anomalies of interest. Unfortunately, most...
Resource Type:: Dissertation
Full Text:: am grateful to my industry collaborators from Galois, Inc. Ryan Wright, Alec Theriault, David W

Investigation of Deep Seismic Reflections Beneath the Forearc in the South Central Chile Subduction Zone

Creator:: Zhang, Edward
Abstract:: The south central Chilean margin is one of the most seismically active subduction zones on Earth, generating some of the largest earthquakes on the planet, including the largest ever recorded in 1960 near Valdivia, Chile (Mw 9.5). Using the 15 km streamer and 6600 in3 tuned seismic airgun array aboard...
Resource Type:: Masters Thesis
Full Text:: array aboard the R/V Marcus G. Langseth, multichannel seismic (MCS) data were collected over the

Landscape Genomics and Climatic Responses of Willamette Valley Alders

Creator:: Kral, George L.
Abstract:: The climate of the Pacific Northwest is in flux, and existing forest ecosystems are stressed and poised to shift in fundamental ways, with or without human intervention. This dissertation probes the nature of forest responses to environmental change through investigations of morphology and genetics of three species of alder co-occurring...
Resource Type:: Dissertation

The effects of elevated temperature and stress on immune function in juvenile chinook salmon (Oncorhynchus tshawytscha)

Creator:: Harrahy, Laura Nicole Martini
Abstract:: Stress, including extreme or rapidly changing temperatures, are known to have deleterious effects on fish health and physiology. This thesis examines the combined effects of elevated acclimation temperature and acute handling stress on the number of antibody producing cells, plasma lysozyme concentrations, and the number of pronephric leukocytes in juvenile...
Resource Type:: Masters Thesis
Full Text:: this degree. I would like to extend my gratitude to Dr. Alec G. Maule for his time, guidance, and

Effects of o,p'-DDE on the immune system of juvenile chinook salmon (Oncorhynchus tshawytscha)

Creator:: Milston, Ruth Helen
Abstract:: Environmental factors such as chemical contamination can have immunomodulatory effects on the immune response of fish and may be contributing to the decline in salmonid populations by augmenting disease susceptibility. Xenobiotics can interfere with the immune system at several levels of complexity, and different immune cells and processes have variable...
Resource Type:: Masters Thesis
Full Text:: o,p '-DDE in fry treated with 10 ppm o,p '-DDE was 0.92 pg g lipid one month post first feeding

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:: some mean mercury concentrations were elevated (3.6- 13.8 µg g-1, dw), they were well below

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:: paired testes mass exceeded 11 g, with concurrent spermatogenesis demonstrated. Seminiferous tubule

Mitigation of Microbiological Water Quality by Last Irrigation-to-Harvest Intervals

Creator:: Emch, Alexander W.
Abstract:: Foodborne outbreaks involving fresh produce have been on the rise since the late 1990's. Pathogens such as Salmonella spp. and Escherichia coli are prevalent in agricultural environments and commonly travel between farms via irrigation water. The Food Safety Modernization Act (FSMA) has placed an increased emphasis on microbiological standards of...
Resource Type:: Masters Thesis
Full Text:: Last Irrigation-to-Harvest Intervals Abstract approved: Joy G. Waite-Cusic

The Politics of Correctional Privatization in the United States

Creator:: Burkhardt, Brett C.
Abstract:: Research Summary: Private correctional firms are political actors. They work to create favorable conditions to market their services. At the same time, they are constrained by external political forces, including political parties, social movements, and public opinion. This article reviews what we know about the reciprocal relationship between the private...
Resource Type:: Article
Full Text:: Legislative Exchange Council, or ALEC. Formed in 1973, ALEC brings together state legislators and

The Impact of Parasitic Copepod Salmincola Californiensis on Swimming Ability & Oxidative Burst Activity in Response to Stress in Juvenile Chinook Salmon

Creator:: Herron-Seeley, Crystal L.
Abstract:: Juvenile Chinook Salmon (Oncorhynchus tshawytscha) have a finite amount of energy that they can use to move from their riverine habitat to their oceanic habitat. Fish in the Willamette River Basin are prevented from moving to the ocean easily by dams which create reservoirs, where they reside for up to...
Resource Type:: Masters Thesis
Full Text:: 207:158-165. Haugland, G. T., A. Ronneseth, and H. I. Wergeland. 2014. Flow cytometry analyses of

Fish sauce : the alternative solution for Pacific whiting and its by-products

Creator:: Lopetcharat, Kannapon
Abstract:: Pacific whiting and its by-products were good raw materials for high quality fish sauce production. Heat stable and salt activated enzymes were responsible for autolytic activity in Pacific whiting and by-products. According to temperature profiles of raw materials at various salt concentrations, two fermentation temperatures, 35°C and 50°C, were selected...
Resource Type:: Masters Thesis
Full Text:: within 20 days. Nitrogen contents in all samples reached the level of commercial fish sauce (16.3 g-N

Formation of Complexes at Plasmodesmata for Potyvirus Intercellular Movement Is Mediated by the Viral Protein P3N-PIPO

Creator:: Wei, Taiyun, Zhang, Changwei, Hong, Jian, Xiong, Ruyi, Kasschau, Krisitin D., Zhou, Xueping, Carrington, James C., and Wang, Aiming
Abstract:: Intercellular transport of viruses through cytoplasmic connections, termed plasmodesmata (PD), is essential for systemic infection in plants by viruses. Previous genetic and ultrastructural data revealed that the potyvirus cyclindrical inclusion (CI) protein is directly involved in cell-to-cell movement, likely through the formation of conical structures anchored to and extended through...
Resource Type:: Article
Full Text:: :GFP was a kind gift from Andrew J. Maule (John Innes Centre, UK). The DNA fragment for PDLP1 was

PattonJasonR2014.pdf

Creator:: Patton, Jason Robert
Abstract:: Subduction zone earthquake and tsunami hazards affect tens of millions worldwide and the recurrence of these disasters can be evaluated with paleoseismic techniques, because earthquake cycles (and their supercycles) typically span many millennia. In these three chapters, I discuss a suite of analyses I use to evaluate the sedimentary record...
Full Text:: , I es mate that slopes become unstable when a seismic load of <0.2 g is imparted. Using infi nite

Evaluation of the Performance of Lateral Spread Displacement Empirical Models for Subduction Zone Earthquake Case Histories

Creator:: Bunn, Michael
Abstract:: Lateral spread is a pervasive type of liquefaction-induced ground failure that occurs on gentle slopes or near free-faces, such as river channels. Resulting horizontal displacements can reach up to several meters, and can be considerably damaging to foundations, bridges, roadways, pipelines, etc. In the 1990s, Bartlett and Youd (1992a, 1995)...
Resource Type:: Masters Thesis
Full Text:: 1989). In dramatic contrast, strong ground motions during the 2010 Maule, Chile, Earthquake, a great

Effect of subduction zone earthquakes on SDOF bridge models

Creator:: Long, Yicheng
Abstract:: Current bridge design codes do not account for the effects of duration of mega-thrust subduction zone earthquakes. Furthermore, codes and even recent performance-based design methodologies only make use of the peak response quantities (forces, displacements, and ductility demands) and do not account for the increased number of inelastic cycles that...
Resource Type:: Masters Thesis
Full Text:: Imperial Valley earthquake, US. (vertical axis in units of the acceleration of gravity, g

Effects of juvenile steelhead on juvenile chinook salmon behavior and physiology

Creator:: Kelsey, D. A., Schreck, Carl B., Congleton, J. L., and Davis, L. E.
Abstract:: Experiments were designed to determine whether and how steelhead Oncorhynchus mykiss affect chinook salmon O. tshawytscha when the two species are confined together. In a behavioral experiment, we observed groups of juvenile chinook salmon and steelhead together and groups of chinook salmon alone to determine whether the steelhead were aggressive...
Resource Type:: Article
Full Text:: functions and disease resistance (Maule et al. 1989). Studies have been conducted on the phys- iological

The effect of chronic exposure of chinook salmon to benzo(a)pyrene and cortisol of CYP1A1 induction and susceptibility to a microsporidian parasite, Loma salmonae

Creator:: Marie, Amarisa
Abstract:: Wild populations of fish are faced with a multitude of stressors, which may include human interaction, toxins, and disease. Benzo(a)pyrene (BaP), a known carcinogen and immunotoxin, has been reported in the stomach contents of juvenile chinook salmon, Oncorhynchus tshawytscha, in urban waterways. We investigated the impact of chronic dietary exposure...
Resource Type:: Masters Thesis
Full Text:: by cortisol, which may result in reduced proliferation of leukocytes (Maule and Schreck, 1991

Where the Stream Meets the Road : Prioritizing Culvert Replacement for Fish Passage

Creator:: Reagan, Rachel E.
Abstract:: Streams across the world are highly fragmented due to the presence of in-stream barriers (e.g., dams and stream-road crossings), many of which restrict or block fish passage. Retrofitting or replacing these structures is a high priority for restoring habitat connectivity for native fishes and other aquatic organisms in the Pacific...
Resource Type:: Masters Thesis
Full Text:: inspired by Alec Maule, who convinced me it was a good (and reasonable) idea. Thanks to Gustavo Bisbal

Retrospective study of the prevalence of Pseudoloma neurophilia between zebrafish sexes

Creator:: Chow, Fidelis
Abstract:: As a major biological model for biomedical research, maintaining healthy zebrafish (Danio rerio) is imperative for accurate and consistent lab results. This retrospective study focuses on Pseudoloma neurophilia, a microsporidium, because it is the most common pathogen found in laboratory zebrafish. An online database maintained by the Zebrafish International Resource...
Resource Type:: Honors College Thesis
Full Text:: , 69-81. Retrieved from http://folia.paru.cas.cz/pdfs/showpdf.php?pdf=20740 10. Maule, A. G

A characterization of Chilean farmers based on their marketproduction orientation

Creator:: Echeverría, Rodrigo, Moreira, Víctor, Barrena, José, and Gopinath, Munisamy
Abstract:: Chile’s open trade policy, implemented during the last few decades, has greatly transformed Chilean farmers and their production systems. As a result, farmers can be grouped into three categories based on their market-production orientation: domestic, transitional or export producers. The objective of this paper is to analyze the factors underlying...
Resource Type:: Article
Full Text:: {[ ( , , )] [ ( , , )]} . . , 0 i i d e i i i i i i d d d d e e e eq q i i d e p q c q S G p q c q S G s t q q − + − ≥ (1

OSU theses and dissertations : 1983-1992

Creator:: Glenn, Judith A.
Abstract:: Departmental and author index of Masters' theses and doctoral dissertations accepted by the Graduate School.
Resource Type:: Book
Full Text:: corn and potatoes. 48 Murillo-Martinez, Carlos G. An analysis of Costa Rican export earnings under the

Susceptibility of select salmonids to Myxobolus cerebralis and effects of exposure on anadromous salmonids in Oregon

Creator:: Sollid, Sarah A.
Abstract:: Myxobolus cerebralis, a myxozoan parasite of salmonids, is the causative agent of whirling disease. The parasite is considered widespread throughout northeastern Oregon in the Grande Ronde and Imnaha River basins where threatened and endangered salmonid populations exist. The work presented in this thesis comprises several studies that assess the effects...
Resource Type:: Masters Thesis
Full Text:: results, and all phases of manuscript preparation. Harriet V. Lorz and Donald G. Stevens assisted with

Cool, pathogen free refuge lowers pathogen associated prespawn mortality of Willamette River Chinook salmon (Oncorhynchus tshawytscha)

Creator:: Benda, Susan
Abstract:: Spring Chinook salmon, Oncorhynchus tshawytscha, are transported above dams in the Willamette River to provide access to blocked spawning habitat. However, 30-95% of these transplants may die before spawning in some years. To varying degrees, salmon in other tributaries--both blocked and unblocked--have similar prespawn mortality (PSM). Our study determined if...
Resource Type:: Masters Thesis
Full Text:: /ml) by injection group for each tank……………………….. Number of N. salmincola per 0.1 g kidney by

Effects of estuarine circulation patterns and stress on the migratory behavior of juvenile salmonids (Oncorhynchus sp.)

Creator:: Truelove, Nathan Kobun
Abstract:: For the first objective of this thesis, we attempt to understand the role of water flow and directionality in determining steelhead (Oncorhynchus mykiss) and spring/summer and fall Chinook (O. tschawytscha) migration patterns within the Columbia River Estuary and plume by integrating recent advances in biotelemetry and environmental observation and forecasting...
Resource Type:: Masters Thesis
Full Text:: transmitters (NTC-3-1 NanoTag®; 0.85 g in air, 149 – 150 megahertz, 2.9 – 3.1 second burst rate, ~11 day

Capture-related stressors impair sablefish, Anoplopoma fimbria, immune system function

Creator:: Lupes, Sarah C.
Abstract:: Sablefish, Anoplopoma fimbria, is a valuable North Pacific Ocean species caught in several commercial fisheries and is often discarded due to size or catch limits. Managers must account for the mortality of discarded fish to assess fish populations and harvest impacts, yet discard mortality rates of specific fisheries are generally...
Resource Type:: Masters Thesis
Full Text:: equivalent volume of Histopaque in 50 ml conical tubes and centrifuged at 500 g for 45 mm at 17 °C. The

The termination of the Basin and Range Province into a clockwise rotating region of transtension and volcanism, central Oregon

Creator:: Trench, David
Abstract:: Normal faults characterizing extensional provinces may terminate along-strike at regions of zero extension, at zones of transform faults, or at triple junctions. Termination of the Basin and Range extensional province in southeastern Oregon is thought to occur by right-lateral transform motion distributed across the Brothers Fault zone (BFZ) in central...
Resource Type:: Masters Thesis
Full Text:: . 2: Geologic map of the study area. AB: Alec Butte; SAH: Sand Hollow; SMH: Smoky Hollow; BC

Immune responses of juvenile chinook salmon (Oncorhynchus tshawytscha) to p,p-̓DDE and tributyltin

Creator:: Misumi, Ichiro
Abstract:: In this thesis, we examined the effects of the exposures to anthropogenic pollutants on the fish, primarily juvenile chinook salmon, immune system using newly and recently developed immune assays. In addition, we developed a new assay for measuring immunocompetence of fish. In the first chapter, the Alamar Blue assay was...
Resource Type:: Masters Thesis
Full Text:: Juvenile spring chinook salmon (Marion Folks stock) weighing 150-200 g were housed at the Fish Performance

A study of Myxobolus cerebralis in the Lostine River, Oregon : epizootiology, distribution and implications for resident and anadromous salmonids

Creator:: Sandell, Todd A.
Abstract:: Myxobolus cerebralis, a myxozoan parasite that infects almost all species of wild and cultured salmonids, was first identified in northeastern Oregon in the Lostine River in 1986. Fish that are heavily infected with M. cerebralis develop whirling disease, which was determined to be the cause of catastrophic declines in rainbow...
Resource Type:: Masters Thesis
Full Text:: ç2hair of Department of Microbiolo Dean of G '- School I understand that my thesis will become part of

Evaluation of ground motion duration effects on the damage prediction of building and bridge structural and soil-structural systems

Creator:: Belejo, Andre
Abstract:: The role of ground motion duration on the seismic performance of civil engineering structures remains unclear. Thus, the role of earthquake strong ground motion duration is assessed in a three manuscript thesis, which includes: (1) assessment of the effects of ground motion duration on the seismic performance of a model...
Resource Type:: Dissertation
Full Text:: , considering all cases; (g) C8 in X direction for, considering only the non-collapsed cases; (h) C2 in Y

Susceptibility of juvenile salmonids to avian predation : Are Caspian terns and double-crested cormorants only taking the sick and injured?

Creator:: Hostetter, Nathan J.
Abstract:: The ability to non-destructively assess fish condition and subsequently track fish behavior and survival can be vital in understanding natural and anthropogenic stressors and sources of mortality, especially in populations of fish listed as threatened or endangered. I investigated the use of a quick, non-lethal, external examination technique to assess...
Resource Type:: Masters Thesis
Full Text:: Fisheries and Aquatic Sciences 53:542-549. Maule, A. G., R. A. Tripp, S. L. Kaattari, C. B. Schreck, and

Stratigraphic correlation of seismoturbidites and the integration of sediment cores with 3.5 kHz chirp subbottom data in southern Cascadia

Creator:: Black, Bran
Abstract:: In order to evaluate the shallow stratigraphy along the southern Cascadia abyssal margin and northern California abyssal plain, CHIRP subbottom profiles capable of imaging individual turbidite beds in the upper tens of meters of the subsurface were collected. Reflectors imaged with the 3.5 kHz CHIRP subbottom data represent turbidite beds...
Resource Type:: Masters Thesis
Full Text:: .............................................................................................. 29 Shakemap of the Mw 8.8 2010 Maule Earthquake

Environmental correlates of parasitism in introduced threespine stickleback (Gasterosteus aculeatus) in the Upper Deschutes River Basin, Oregon

Creator:: Koketsu, Wataru
Abstract:: The Pseudophyllidean tapeworm, Schistocephalus solidus, is a parasite that requires both copepods and fish, mainly the threespine stickleback (Gasterosteus aculeatus) as intermediate hosts, and birds as its final host to complete its life cycle. A rapid increase in the abundance of both the non-native stickleback and the tapeworm in the...
Resource Type:: Masters Thesis
Full Text:: approximately 7 cm and 4 g. Stickleback have been observed in various lentic habitats over a range of sizes

Soil-bridge interaction during long-duration earthquake motions

Creator:: Romney, Kyle T.
Abstract:: Earthquake engineering analyses are often performed using shallow, crustal earthquake motions (e.g., 1940 El Centro). However, large areas of the world are subject to subduction zone earthquake motions (e.g., the Pacific Northwest). A subduction zone earthquake motion is characterized by its long duration (e.g., strong shaking lasts for more than...
Resource Type:: Masters Thesis
Full Text:: hinge rotation, θlp, for the Maule, Chile, Maipu Station earthquake motion. The yield rotation, θY

Measuring Local Genetic Variability in Populations of Codling Moth (Lepidoptera: Tortricidae) Across an Unmanaged and Commercial Orchard Interface

Creator:: Fuentes-Contreras, Eduardo, Basoalto, Esteban, Franck, Pierre, Lavandero, Blas, Knight, Alan L., and Ramírez, Claudio C.
Abstract:: The genetic structure of adult codling moth, Cydia pomonella (L.), populations was characterized both inside a managed apple, Malus domestica Borkdhausen, orchard and in surrounding unmanaged hosts and nonhost trees in central Chile during 2006–2007. Adult males were collected using an array of sex pheromone-baited traps. Five microsatellite genetic markers...
Resource Type:: Article
Full Text:: (35� 5�37� S, 71� 16�6� W) in the central valley of the Maule region, Chile (Basoalto et al. 2010; see

Eolian landforms and wind power prospecting in the Central Columbia River Basin

Creator:: McClenahan, Michael R.
Abstract:: Sand dunes are used as indicators of wind power potential and examples are presented of their application as a prospecting technique at four study sites in the Central Columbia River Basin. Aerial reconnaissance is combined with interpretation of photography and topographic maps as a basis of sand dune analysis. Sand...
Resource Type:: Capstone Project
Full Text:: , Peter Maule, and John Wade for their encouragement, guidance, and financial help during my work on

Husbandry stress of Zebrafish, Danio rerio

Creator:: Ramsay, Jennifer Mara
Abstract:: Zebrafish, Danio rerio, are widely used as vertebrate research organisms yet little is know about their responses to husbandry stressors. This dissertation examined the whole-body cortisol responses of zebrafish to husbandry stress. Additionally, the effects of stress on the susceptibility to mycobacteriosis and microsporidiosis (Pseudoloma neurophilia) were determined including effects...
Resource Type:: Dissertation
Full Text:: : Experiment 1: Crowding significantly increases cortisol levels. Individual whole-body cortisol (ng/g fish

Where Have All the (White and Hispanic) Inmates Gone? Comparing the Racial Composition of Private and Public Adult Correctional Facilities

Creator:: Burkhardt, Brett C.
Abstract:: A great deal of research has documented racial disparities in imprisonment rates in the United States, but little work has been done to understand the process by which inmates are assigned to individual correctional facilities. This article extends research on racial disparities in imprisonment rates to consider racial disparities in...
Resource Type:: Article
Full Text:: American Legislative Exchange Council (ALEC), a partnership of conservative legislators and businesses

Gene expression in the liver of rainbow trout, Oncorhynchus mykiss, during the stress response

Creator:: Momoda, Tracey S.
Abstract:: The extent to which responses to stress are maladaptive or adaptive to the long-term survival of fish remains to be better understood. The aim of this study was to identify differentially expressed genes in the livers of rainbow trout, Oncorhynchus mykiss, responding to an experimental stressor. Gene expression responses were...
Resource Type:: Masters Thesis
Full Text:: adverse effects on fish through suppression of growth (Pickering et al., 1991), immune function (Maule

Lidar-based Post-earthquake Pavement Damage Classification System

Creator:: Shakya, Suzanna
Abstract:: 3D laser scanning has been used extensively in engineering reconnaissance surveys to capture perishable data in an efficient, reliable, and precise manner. Many insights on damage can be obtained from the data through various methods of post-processing; however, many of these techniques are often labor intensive. This delay reduces the...
Resource Type:: Masters Thesis
Full Text:: on critical sites after the Mw 8.8 Maule, Chile earthquake to describe surface and infrastructure

deSilvaShanakaCEOASResurgentTobaField.pdf

Creator:: de Silva, Shanaka L., Mucek, Adonara E., Gregg, Patricia M., and Pratomo, Indyo
Abstract:: Highlights: New data reveal for the first time a history of the last ∼33.7 ky of uplift of Samosir. Minimum uplift rates were high (4.9 cm/year) for the first 11.2 ky but diminished after that to <1 cm/year for the last 22.5 ky. Numerical modeling suggests that rebound of remnant...
Full Text:: Maule caldera in Chile, Feigl et al. (2014) report exceptionally rapid deformation of ∼28 cm/year

DoljaValerianBotanyPlantPathologyMyosinsPlayDistinct.pdf

Creator:: Amari, Khalid, Di Donato, Martin, Dolja, Valerian V., and Heinlein, Manfred
Abstract:: Viruses are obligatory parasites that depend on host cellular factors for their replication as well as for their local and systemic movement to establish infection. Although myosin motors are thought to contribute to plant virus infection, their exact roles in the specific infection steps have not been addressed. Here we...
Full Text:: different treatments, as determined by t-test (P,0.001). G-I, quantification of TMV-GFP RNA upon

Systemwide Evaluation of Avian Predation on Juvenile Salmonids from the Columbia River Based on Recoveries of Passive Integrated Transponder Tags

Creator:: Evans, Allen F., Hostetter, Nathan J., Roby, Daniel D., Collis, Ken, Lyons, Donald E., Sandford, Benjamin P., Ledgerwood, Richard D., and Sebring, Scott
Abstract:: We recovered passive integrated transponder (PIT) tags from nine piscivorous waterbird colonies in the Columbia River basin to evaluate avian predation on Endangered Species Act (ESA)-listed salmonid Oncorhynchus spp. populations during 2007–2010. Avian predation rates were calculated based on the percentage of PIT-tagged juvenile salmonids that were detected as passing...
Resource Type:: Article
Full Text:: salmon. In a study of salmonid migration depth in the Columbia River, Beeman and Maule (2006) observed

Distribution and coinfection of microparasites and macroparasites in juvenile salmonids in three upper Willamette River tributaries

Creator:: Roon, Sean Robert
Abstract:: Wild fish populations are typically infected with a variety of micro- and macroparasites that may affect fitness and survival, however, there is little published information on parasite distribution in wild juvenile salmonids in three upper tributaries of the Willamette River, OR. The objectives of this survey were to document (1)...
Resource Type:: Masters Thesis
Full Text:: trematode species Gyrodactylus colemanensis and G. salmonis found that about 2.3 x 105 live parasites/day

Multiple functions of a proteinase in closterovirus life cycle

Creator:: Peng, Chih-Wen
Abstract:: More than half of the recognized genera of positive strand RNA viruses employ polyprotein processing as one of the strategies for their genome expression. Normally, this processing is mediated by virus-encoded proteinases that belong to the trypsin-like or papain-like family. In particular, papain-like, leader proteinases were found in diverse families...
Resource Type:: Dissertation
Full Text:: . Goszczynski, D.E., G.G.F. Kasdorf, G. Pietersen, and H. Van Tonder. 1996. Grapevine leafroll-associated virus

A food web analysis of a Mojave Desert geothermal spring system and feeding ecology of Moapa dace (Moapa coriacea)

Creator:: StSaviour, Adam
Abstract:: Understanding food webs is fundamental in conserving endangered species and maintaining healthy ecosystem function, particularly in desert spring systems. We identified dominant energy sources in the Muddy River Warm Springs area, Clark County, NV using carbon and nitrogen natural abundance stable isotope analyses. We examined isotopic signatures of specific macroinvertebrate...
Resource Type:: Masters Thesis
Full Text:: Kilometers Study Area a b c d e f g h i j k l m n o p q r s t

Prespawning Mortality of Fall Creek Willamette Chinook Salmon (Oncorhynchus tshawytscha): Evaluation of the Effects of a New Trap at the Adult Fish Collection Facility

Creator:: Carey, Katherine
Abstract:: Annual rates of prespawn mortality (PSM) in adult Chinook salmon (Oncorhynchus tshawytscha) trapped and transported upstream of dams in the Willamette River basin are high (often >40%) and could limit the ability to restore natural populations of spring Chinook salmon if not reduced. Improvements at the U.S. Army Corps of...
Resource Type:: Masters Thesis
Full Text:: then vortexed until the filters dissolved. The tubes were centrifuged for 2 min at 8 x 1000 g

Muscular strength of active men, 25 to 64 years of age

Creator:: LeMarr, John D.
Abstract:: This study measured muscular strength and perceived exertion of active men, 25 to 64 years old. The subjects were 80 members of a large YMCA, with 20 active men chosen from each of the following age groups: 25-34, 35-44, 45-54,and 55-64. Measurement of strength consisted of assessing the maximum weight...
Resource Type:: Dissertation
Full Text:: sectional studies have reported a difference in muscular strength between age groups (Milne & Maule, 1984

Identification of Endogenous and Exogenous Pararetroviruses in Red Raspberry (Rubus idaeus L.) and Blueberry (Vaccinium corymbosum L.)

Creator:: Diaz Lara, Alfredo
Abstract:: The Pacific Northwest (Oregon and Washington in the United States and British Columbia in Canada) is one of the major producers of red raspberry (Rubus idaeus L.) and blueberry (Vaccinium corymbosum L.) in the world. The expansion of growing area with these crops has resulted in the emergence of new...
Resource Type:: Dissertation
Full Text:: ., Perbal, M.C., Boyer, J.C., Wellink, J., Goldbach, R.W., Maule, A.J., Van Lent, J.W.M., 1996. The

Design of Ion Thruster Optics Simulator and a Neural Network Emulator

Creator:: Sable, Shital Dnyandeo
Abstract:: The grid geometry plays a vital role in the performance of gridded ion thrusters. It can dramatically impact the erosion rate and thrust. Designers push the limits of electric in-space propulsion by optimizing grid parameters through simulation. At the same time, computational models of plasma physics are intensive. A baseline...
Resource Type:: Masters Thesis
Full Text:: propellant exhaust velocity with the gravitation constant ‘g’. Electric propulsion provides a very high

Genetic and Functional Diversification of Small RNA Pathways in Plants

Creator:: Xie, Zhixin, Johansen, Lisa K., Gustafan, Adam M., Kasschau, Kristin D., Lellis, Andrew D., Zilberman, Daniel, Jacobsen, Steven E., and Carrington, James C.
Abstract:: Multicellular eukaryotes produce small RNA molecules (approximately 21–24 nucleotides) of two general types, microRNA (miRNA) and short interfering RNA (siRNA). They collectively function as sequence-specific guides to silence or regulate genes, transposons, and viruses and to modify chromatin and genome structure. Formation or activity of small RNAs requires factors belonging...
Resource Type:: Article

Classifying and Synthesizing 3D Shapes of Objects using Deep Neural Networks

Creator:: Xu, Xu
Abstract:: Reasoning about 3D shape of objects is important for successful computer visionapplications in robotics, 3D rendering and modeling. In this thesis, we address twoproblems { First, given an image, we generate 3D shape of the foreground object thatappears in the image. Second, we predict the class label of the input...
Resource Type:: Masters Thesis
Full Text:: generator G in 3D-VAE-GAN. Input is a real vector z, with 100 dimensions. The output is a voxelized

Open Set Learning with Counterfactual Images

Creator:: Neal, Lawrence W.
Abstract:: In open set recognition, a classifier must label instances of known classes while detecting instances of unknown classes not encountered during training. To detect unknown classes while still generalizing to new instances of existing classes, this thesis introduces a dataset augmentation technique called counterfactual image generation. This approach, based on...
Resource Type:: Masters Thesis
Full Text:: trained classifier. The Generative OpenMax (G-OpenMax) approach effectively detects new and unknown

Counterfactual States for Atari Agents via Generative Deep Learning

Creator:: Olson, Matthew L.
Abstract:: Although deep reinforcement learning agents have produced impressive results in many domains, their decision making is difficult to explain to humans. To address this problem, past work has mainly focused on explaining why an action was chosen in a given state. A different type of explanation that is useful is...
Resource Type:: Masters Thesis
Full Text:: . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 3.2 The encoder E, generator G, and discriminator D learn a model of the external environment for

Ceratomyxa shasta-related concerns for reintroduced anadromous salmonids into the Upper Klamath Basin, CA-OR, USA

Creator:: Hurst, Charlene N.
Abstract:: The myxozoan parasite of salmonids, Ceratomyxa shasta, is established throughout the Klamath River, CA-OR, with high parasite densities below the series of dams and above the dams (upper basin) in the northernmost tributary, the Williamson River (WMR). Two objectives were designed to address concerns about C. shasta effects on reintroduced...
Resource Type:: Masters Thesis
Full Text:: Beaver Creek, the latter a section of the lower Klamath River (Maule et al., 2009). Although about 20

Optics, structure and variability of the offshore Columbia River plume

Creator:: Saldías, Gonzalo
Abstract:: The Columbia River delivers the greatest amount of freshwater to the coastal ocean along the U.S. Pacific coast. This freshwater forms the Columbia River plume, a mesoscale plume with significant implications on coastal ocean physical, biological, chemical, and geological processes. The plume is transported south and offshore during the upwelling...
Resource Type:: Dissertation
Full Text:: ), backscatter (g-h), CDOM fluorescence (i-j), and chlorophyll–a (k-l

Downstream Rearing Chinook Salmon (Oncorhynchus tshawytscha) in the Upper Mainstem of the John Day River

Creator:: Scheu, Michael P.
Abstract:: Juvenile Chinook Salmon (Oncorhynchus tshawytscha) leave the natal reach at different times and move downstream at different rates which can increase their productivity by allowing them to utilize habitats on different temporal scales and spreading risk of localized stochastic events. This life history diversity can also allow fish to adapt...
Resource Type:: Masters Thesis
Full Text:: measured to the nearest 0.1 g for mass and nearest mm for fork length (FL). Each fish was scanned for the

Re-examining Ceratomyxa shasta in the Pacific Northwest

Creator:: Stinson, Matthew E. T.
Abstract:: Ceratomyxa shasta infects salmonids in the Pacific Northwest (PNW) of North America, occasionally causing losses in wild and captive populations. Host-specific parasite genotypes (O, I, II, III) were previously characterized molecularly using markers in the ribosomal DNA and phenotypically by type host in the Klamath River, CA/OR. This thesis sough...
Resource Type:: Masters Thesis
Full Text:: suffered >92.3% mortality (Maule et al. 2009). This difference in mortality led researchers to examine

Expression of a Structural Protein of the Mycovirus FgV-ch9 Negatively Affects the Transcript Level of a Novel Symptom Alleviation Factor and Causes Virus Infection-Like Symptoms in Fusarium graminearum

Creator:: Bormann, Joerg, Heinze, Cornelia, Blum, Christine, Mentges, Michael, Brockmann, Anke, Alder, Arne, Landt, Svenja Kim, Josephson, Brian, Indenbirken, Daniela, Spohn, Michael, Plitzko, Birte, Loesgen, Sandra, Freitag, Michael, and Schaefer, Wilhelm
Abstract:: Infections of fungi by mycoviruses are often symptomless but sometimes also fatal, as they perturb sporulation, growth, and, if applicable, virulence of the fungal host. Hypovirulence-inducing mycoviruses, therefore, represent a powerful means to defeat fungal epidemics on crop plants. Infection with Fusarium graminearum virus China 9 (FgV-ch9), a double-stranded RNA...
Resource Type:: Article
Full Text:: bar, 10 mm) (E), anastomosis formation (scale bar, 10 �m) (F), and relative vr1 gene expression (G

Auxiliary Tasks for Efficient Learning of Point-Goal Navigation

Creator:: Desai, Saurabh Satish
Abstract:: Top-performing approaches to embodied AI tasks like point-goal navigation often rely on training agents via reinforcement learning over tens of millions (or even billions) of experiential steps – learning neural agents that map directly from visual observations to actions. In this work, we question whether these extreme training durations are...
Resource Type:: Masters Thesis
Full Text:: . rt = D(Pt, g)−D(Pt+1, g)− λ (5.1) Here λ is slack penalty which acts as cost for staying alive. This

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