Fissure densities and widths have been mapped along the axial zone of the superfast spreading southern East Pacific Rise (EPR) at 17°15′–40′S with the near-bottom DSL-120 and Argo II imaging systems. We observe that the youngest lava flows (on a relative age scale) are sparsely fissured and that there is...
The deep-towed Argo I optical/acoustical vehicle and a geographic information system (GIS) have been used to establish the abundance, widths, and spatial distribution of fissures, as well as the relative age distribution of lavas along the narrow (<500 m wide) axial zone of the East Pacific Rise (EPR) from 9°12′...
The spring bloom is a key oceanic phenomenon in the Northern Gulf of Alaska (NGA), where it supports the regional ecosystem, fisheries, and CO2 sequestration. Despite its significance, mechanisms that trigger NGA blooms are still debated, largely due to a lack of sufficient data from late winter through spring. New...
Microbial activity within elevated CO2 and oxygen depleted environments changes with
density driven stratification overturn in the seasonally anoxic region of Devil’s Hole,
Bermuda. The temperature gradient developed during the summer months creates a
natural laboratory to study bacterial and virus population density and microbial
community dynamics in the anoxic...
Despite policies implemented by the NCAA with the intention of increasing student-athlete academic success and persistence to graduation, student-athlete graduation rates still remain low, with only 65% of student-athletes receiving their college degree. Certain non- cognitive variables, including the availability of a strong support person, have been shown predict persistence...
The accumulation of fuels in fire prone landscapes, and changing climatic conditions, have resulted in increasingly volatile fire behaviors. As a result, social and operational risk, management expenditures, and budgetary requirements for responsible agencies are increasing. The United States Forest Service (USFS) manages 193 million acres across the United States...
Spotted-wing drosophila (SWD, Drosophila suzukii) is an invasive fruit fly species native of Southeast Asia. In vineyards, SWD lays eggs in damaged and intact fruit of the most soft-skinned varieties, and feeds on damaged fruits during the harvest period. Feeding and oviposition activities increase the likelihood of vectoring spoilage bacteria,...
Commercial radish seed producers in the Willamette Valley of Oregon have observed a late season wilt in their seed fields. Twenty-two fields were surveyed for wilt in the Willamette Valley during June through August 2012 and 2013. Plants exhibiting wilt symptoms were collected from the fields and examined for vascular...
Forest harvest persists as one of the most globally important industries, and crucially provides raw wood products for both building and fuel materials. Mechanistically complex abiotic and biotic processes curb ecosystem recovery following timber harvest and it is of great importance to understand the effects of this practice on biogeochemical...
Invasion by exotic species can pose a major challenge for developing native
plant communities in wetland restoration projects. Often native plant communities
do not develop as anticipated in restored wetlands due to colonization by exotic
species that dominate the native plant community. Despite the time and expense to
restore wetlands,...
The goal of this research was to analyze what different types of perceived barriers affect student veterans' access to mental healthcare services. Previous research has shown that veterans who return from combat and later attend universities are not receiving adequate mental healthcare for mental health problems, including Post-Traumatic Stress Disorder...
High purity isopropyl alcohol (IPA) is utilized in silicon wafer manufacturing in cleaning and drying processes. With the ever-decreasing die size, there is an increased need for even higher purity chemicals. This process was designed to further purify a 250,000 lbs/month stream high purity isopropyl alcohol stream for use in...
This dissertation reviews the literature on the specialty area of dolphin assisted therapy (DAT), a subfield of animal assisted therapy (AAT). To date the literature on the effectiveness of DAT has been mixed although a majority of it is positive. The study was conducted with 40 parents whose children were...
Transcriptome gene expression studies of sperm RNA have been utilized in a variety of different species to investigate causes of male infertility. Previous research investigators have optimized cell separation and RNA isolation techniques for each species of interest. To date, no study has been completed for dogs. The objective of...
Coho salmon (Oncorhynchus kisutch) migration and spawning are unique components of the salmon life cycle because they require synchrony of behavior with other individuals as well as with acceptable fluvial conditions. As with other organisms that exhibit group mating behavior, it is likely that environmental cues trigger coho salmon movement...
An understanding of oppression and privilege would improve engineering climates and encourage individuals with marginalized identities to stay engaged in engineering spaces. Currently there are quantitative tools to assess cultural competencies, but none that measure understandings of power relationships. This project aims to create a qualitative assessment instrument to measure...
Wildfire management policy over the past century, which attempts to exclude fire from fire-adapted ecosystems, has led to a build-up of fuels across the western United States. As a result, current wildfires contain larger areas of high severity, high intensity burns than seen prior to the policy implementation. There are...
The purpose of this study was to compare the proposed women's college styles for day and evening in selected magazines to the documented apparel of college women from Oregon State College in the 1949-1957 time period. The historic method and visual analysis methods were used to complete this study. An...
Habitat loss and fragmentation is a crisis affecting wildlife worldwide. In Tanzania, East Africa, a dramatic and recent (<80 years) expansion in human settlement and agriculture threatens to reduce gene flow among protected areas for many species of large mammals. Wildlife linkages can mitigate population isolation, but linkage designs lacking...
Mycobacterium avium is a ubiquitous environmental organism found in both water and soil. It can cause disease in patients with previous pulmonary conditions, as well as immunosupressed patients, with the most prevalent being AIDS patients. Studies have indicated that passage through amoeba, a common environmental protozoa, increases virulence of M....