Index Catalog // ScholarsArchive@OSU

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

Creator:: Bowen, Michael S.
Abstract:: Recent interest in oxy-fuel combustion for carbon capture, as well as advancements in technologies such as magnetics, materials, and computational modeling has sparked renewed interest in magnetohydrodynamic (MHD) power generation. The increased temperatures of oxy-fuel combustion versus air-fuel combustion poses a challenge in the selection of materials for plasma exposed...
Resource Type:: Masters Thesis
Full Text:: THE THESIS OF Michael S. Bowen for the degree of Master of Science in Mechanical Engineering

Regional and Site-Specific Vulnerabilities of the Western Power Grid from a M9.3 Cascadia Subduction Zone Earthquake

Creator:: Lathrop Eve D.
Abstract:: The likelihood of a Cascadia Subduction Zone (CSZ) earthquake is estimated between 37 to 42% in the next 50 years, leading to strong shaking, liquefaction, landsliding, and other seismic ground failure resulting in major impacts to critical lifelines such as the western power grid. Electrical power is essential for continued...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Eve D. Lathrop for the degree

Pacific Madrone Leaf Blight Detection with Unmanned Aerial Systems and Machine Learning

Creator:: Barker, Matthew I.
Abstract:: Ground-based assessments of foliar diseases including leaf blight are time-consuming and costly. We investigated the potential for using an unmanned aerial system (UAS) in conjunction with a multispectral sensor to determine whether we could more efficiently and reliably detect and quantify leaf blight in Pacific madrones. Our methods included ground-based...
Resource Type:: Masters Thesis
Full Text:: Abstract approved: ______________________________________________________ Michael G. Wing

Marine Heatwaves Influence Depth Preferences of Chinook Salmon (Oncorhynchus tshawytscha)

Creator:: Teahan, Andrew
Abstract:: Marine heatwaves have become more common over the past several years. The 2014-2015 ‘warm blob’ had profound effects on marine ecosystems in the Northeast Pacific. Given the particular habitat needs of Chinook Salmon (Oncorhynchus tshawytscha) we wanted to examine the impacts of the heatwave on Chinook depth distribution. We examined...
Resource Type:: Masters Thesis
Full Text:: : ______________________________________________________ Michael Banks Abstract Marine heatwaves have become more common over the past several years

Development from a Distance: Exploring International Non-profit Interactions with Communities during the COVID-19 Pandemic

Creator:: Peiffer, Ashley K.
Abstract:: The COVID-19 pandemic impacted the international development sector through various external and internal stressors. Community engagement practices that international non-governmental organizations and non-profits conducted were disrupted by the pandemic, and communities were faced additional challenges when international development workers were required to socially distance or relocate at the onset of...
Resource Type:: Masters Thesis
Full Text:: : ______________________________________________________ Michael Harte The COVID-19 pandemic impacted the international development sector

An Agent-Based Simulation for Emergency Warning Dissemination in a Multiplex Social Network

Creator:: Koll, Charles D.
Abstract:: The variety of natural disasters provide different sets of characteristics and properties with unique challenges. One significant difference between hazard types is prewarning lead time, the amount of time individuals have from a potential warning to the disaster occurring. Rapid onset disasters may not provide an official warning about a...
Resource Type:: Masters Thesis
Full Text:: ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 3.2.7 Prewarning Time Before Disaster (d

Assessing Seismic Rockfall Impacts on Mobility in Transportation Corridors

Creator:: Holtan, Katherine
Abstract:: The climate and geologic conditions of the Pacific Northwest leaves its roads highly susceptible to rockfall hazards. Rockfalls often occur on steep slopes that experience heavy rainfall, groundwater seepage, or strong shaking from earthquakes. The unpredictable nature of these events often creates substantial problems for communities, transportation infrastructure, and the...
Resource Type:: Masters Thesis
Full Text:: . Abstract approved: ________________________________________________________ Michael J. Olsen

Intestinal Lesions and Parasites Associated with Senescence and Prespawn Mortality in Chinook Salmon (Oncorhynchus tshawytscha)

Creator:: Nervino, Stephanie A.
Abstract:: Pre-spawning mortality (PSM) presents a major problem for population recovery of spring Chinook salmon (Oncorhynchus tshawytscha) in the Willamette River basin. In certain reaches and years, PSM has exceeded 90%. Histology has been used as the primary diagnostic method to investigate PSM in the Chinook Salmon, and a collection of...
Resource Type:: Masters Thesis
Full Text:: Michael L Kent Pre-spawning mortality (PSM) presents a major problem for population recovery

Population Differentiation in two Northeastern Pacific Marine Species

Creator:: Curran, Lorne Sullivan
Abstract:: Population genetic techniques are now preeminent in differentiating wild populations. Natural resource managers rely on them in their efforts to restore viable populations of fish and wildlife. Overfishing adversely impacted Yelloweye Rockfish (Sebastes ruberrimus) on the U.S. West Coast in the late 20th century. Management actions included shutting down the...
Resource Type:: Masters Thesis
Full Text:: : Michael A. Banks Population genetic techniques are now preeminent in differentiating wild populations

Modifications to Rearing Environments as a Method for Reducing Domestication Selection in Hatchery-reared Steelhead (Oncorhynchus mykiss)

Creator:: Obley, Miriam
Abstract:: Since the decline of salmonid populations in the Pacific Northwest, supplementation programs have become frequently implemented by hatcheries as a way to protect and conserve wild stock. However, hatchery-reared fish have lower fitness than wild fish which is likely due to adaptation to the hatchery environment, i.e., domestication selection. Fish...
Resource Type:: Masters Thesis
Full Text:: : ______________________________________________________ Michael S. Blouin Since the decline of salmonid populations in the Pacific Northwest

ScholarsArchive@OSU

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

Regional and Site-Specific Vulnerabilities of the Western Power Grid from a M9.3 Cascadia Subduction Zone Earthquake

Pacific Madrone Leaf Blight Detection with Unmanned Aerial Systems and Machine Learning

Marine Heatwaves Influence Depth Preferences of Chinook Salmon (Oncorhynchus tshawytscha)

Development from a Distance: Exploring International Non-profit Interactions with Communities during the COVID-19 Pandemic

An Agent-Based Simulation for Emergency Warning Dissemination in a Multiplex Social Network

Assessing Seismic Rockfall Impacts on Mobility in Transportation Corridors

Intestinal Lesions and Parasites Associated with Senescence and Prespawn Mortality in Chinook Salmon (Oncorhynchus tshawytscha)

Population Differentiation in two Northeastern Pacific Marine Species

Modifications to Rearing Environments as a Method for Reducing Domestication Selection in Hatchery-reared Steelhead (Oncorhynchus mykiss)

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