An experimental apparatus is modified to allow measurements of the Seebeck coefficient and resistivity to be taken simultaneously. This apparatus is designed for bulk and thin film samples between temperatures of 10 K and 300 K. The apparatus is constructed such that these simultaneous measurements do not interfere with each...
Design of Geosynthetic-Reinforced Soil Structures (GRSS) require sufficient rear pullout anchoring capacity in order to maintain internal stability. Length requirements are amplified when reinforcement coverage ratios or seismicity is considered, potentially resulting in uneconomical GRSS design lengths. This study describes the influence of reinforcement length, coverage ratio, and pseudostatic seismic...
Water availability is a controlling factor in stream ecosystems with direct influences on habitat and aquatic ecosystem process, but little work has been done evaluating how biota respond to natural variations in low flow conditions during summer, and which biotic or abiotic features in the system may link most closely...
The COVID-19 pandemic highlighted disparities in land access and food security. Research has shown that access to gardening reduces financial burdens on low-income households. Compared to homeowners, individuals and families in rental housing face added barriers to vegetable gardening and growing food. These barriers include rental housing regulations and the...
The purpose of this thesis was to quantify sperm acrosome associated 3 (SPACA3) protein expression in the ovaries of young (3.0±0.9 months, n=11) and adult (10.4±2.8 months, n=11) queens. It was hypothesized that SPACA3 expression would not differ between age groups. Immunohistochemistry was performed on formalin-fixed, paraffin-embedded feline ovarian sections...
It is commonly accepted that for the analysis of wood beams, the neutral axis coincides with the centroid of the beam. Although this assumption is used in analysis, wood is not an isotropic material, as it has different elastic properties in the tangential, radial and longitudinal directions, nor is it...
Anthropogenic CO₂ emissions are shifting the global climate equilibrium, causing widespread losses in biodiversity. Anthozoan cnidarians are some of the species most vulnerable to environmental change. Environmental stress causes corals and sea anemones to expel their endosymbiotic algae, which constitute a primary source of nutrition for some Anthozoa. Carbonic anhydrase...
A primary target of Mycobacterium tuberculosis is the human alveolar macrophage.
Infection by this bacterium can lead to a variety of responses, such as apoptosis,
autophagy, and necrosis, which may be involved in controlling the infection. M.
tuberculosis has evolved mechanisms to evade or use the host-mediated processes to its...
This thesis aims to address barriers that K-5 educators face when implementing environmental education in classrooms. An in-depth study of the history of environmental education in the United States identifies primary barriers and issues. Focusing specifically on garden education programs, six lesson plans for K-5 were created to address the...
While damages due to ponding are common and expensive, provisions for design and
construction of flat roof systems lack guidance regarding these loads. The goal of this research is
to present methods of designing or building flat roofs that are less vulnerable to this condition. An
investigation of the literature,...
Accurate estimation of the amount of water used by trees is important for a variety of agricultural applications. There are several current methodologies for measuring sap flow and water use in trees, however the heat ratio method has been identified as the ideal due to its ability to measure low...
Objective: To perform a systematic review and meta-analysis on the prevalence rate of mental health disorders including anxiety, depression, and insomnia during the COVID-19 pandemic in Eastern Europe in the general population, as well as within select sub-populations (i.e., students, general healthcare workers, and frontline workers).
Data sources: Articles in PubMed,...
Type-2 diabetes (T2D) has become a pandemic. The main impairment in T2D is skeletal muscle insulin resistance (IR) and is often associated with obesity. Despite decades of study, the mechanisms of IR have not been fully resolved. Evidence has implicated mitochondrial dysfunction as a potential cause and/or consequence of IR....
Milk collected from individual cows (n= 31) was centrifuged to equalize fat composition and was tested during chymosin-induced coagulation to compare the influences of somatic cell level, breed, parity, protein composition, and lactation stage on coagulation rate. Coagulation rate was determined using diffuse reflectance. Pearson correlation coefficients were calculated for...
Previous research has associated insecure adult attachment with lower levels of pain self-efficacy within a laboratory setting. However, the external validity of these results remains unclear. This study focused on the applicability of this theory outside of a laboratory setting, specifically within the lens of exercise habits. If insecure adult...
Safety culture is a vital part of any organization. It describes how employees, on all levels, perceive safety at the particular organization. Measuring safety culture is fundamental to determining the environment of the organization. Using different measurement methods, including surveys, changes can be made to increase safety and improve safety...
This is the first study to link exercise with adult romantic attachment style in a university setting. Previous research has associated insecure attachment styles, particularly those associated with high levels of anxiety, with increased pain sensitivity. This thesis hypothesizes that the mechanism responsible for this relationship will correlate with the...
Watching how Oregon State is working to combat some of the complex social issues that plague the world today by placing student success at the top of their strategic priority list, the Oregon State Investment Group (OSIG) believes that by leveraging capital markets we can play our part in helping...
Adults with severe and persistent mental illness (SPMI) are overrepresented in the homeless population, and Oregon’s homeless population has expanded in recent years. In the 1950s, the mentally ill were moved out of the state hospitals and into the community. However, due to a lack of support services in the...
Honeybees are essential for agriculture and to sustain an ecosystem. There are two main types of bacterial diseases that affect honeybee colonies and brood: American Foulbrood and European Foulbrood. Both bacterial diseases can be treated with antibiotics approved for use in honeybees, however American Foulbrood is spore forming and cannot...
This thesis project provides a guiding framework for the structural analysis portion of the National Concrete Canoe Competition (NCCC). Step-by-step instructions on how to 3-dimensionally model a “standard” sized concrete canoe in AutoCAD Civil 3D, import the model into SAP2000, and proceed to analyze the canoe with the SAP2000 finite...
Aesthetics should be emphasized as much as possible in a design project without
exceeding scope, budget, or schedule to satisfy the stakeholders involved. There
is a rising trend of increased emphasis on aesthetics. This trend of using various
techniques to help structures blend in or contribute to the surrounding
environment...
Monitoring the concentration of phenolic compounds is important for environmental regulation, health diagnostics, and bioenergy fermentation. Vanillin is a phenol compound used as a food flavoring that can cause allergies and inhibits biofuel production. The phenol m-cresol is a toxic compound that is regulated in the environment and in human...
Crime rates affect everything from home values, to the quality of education. Through the use of Social Disorganization Theory this paper will support the hypothesis that there is a correlation between neighborhood upkeep and crime rates within neighborhoods. Social Disorganization theory itself aims to show the correlation between the place...
In a homogenous and isotropic material, the location of the neutral axis coincides with the location of the centroid of the beam. Wood is anisotropic, meaning that it has different properties in different directions. It is also non-homogenous, meaning that the beam exhibits different properties at different locations throughout its...
Immature T cells, known as thymocytes, undergo development through successive stages in the thymus and the periphery to become functional mature T cells. These stages are regulated by sequence specific transcription factors (SSTFs). Two such SSTFs, BCL11B and TCF-1, are both known master regulators of thymopoiesis, which is also known...
During the past two decades, interest has grown in the role and welfare implications of different head and neck positions (HNPs) in equine biomechanics as well as dressage training and competition. To evaluate the influence of HNP on stride length, 17 horses of varying breeds and dressage levels were studied...
Cytochrome P450 1B1 (Cyp1B1) is a xenobiotic metabolizing enzyme, responsible for polycyclic aromatic hydrocarbon (PAH) oxidative metabolism. CYP1B1 metabolically activates several species of environmentally relevant procarcinogenic PAHs to reactive carcinogens. PAHs are aryl hydrocarbon receptor (AhR) agonists, leading to CYP1B1 upregulation. Though CYP1B1 is highly conserved across species, wild type...
Mycoplasma pneumoniae is the primary cause of community-acquired pneumonias, including what is commonly known as walking pneumonia. This disease affects people from all demographics, but especially children and older adults. Outbreaks are a significant public health concern and work to develop new pharmacological agents is currently being researched. How M....
In order to generate practical ways to easily design functional flexible lattice structures, this research seeks to find a way to predict reactive forces of compressed hyperelastic cubic lattice structures. Using 3D printed test coupons, material data was collected for use in finite element analysis. Cubic lattice structures with varying...
BioResource Research thesis defense presentation for Tyler Sato Spofford.
The COVID-19 pandemic highlighted disparities in land access and food security. Research has shown that access to gardening reduces financial burdens on low-income households. Compared to homeowners, individuals and families in rental housing face added barriers to vegetable gardening and growing...
The decline of the Chinook Salmon has been a mystery of recent years due to their decline. It has been speculated that wild origin salmon have more vigor and survivability than hatchery reared fish. This is thought to be due to rearing conditions, possibly affecting sensory organ development. The sensory...
Fibromyalgia syndrome (FMS) is recognized for its difficulty to diagnose and subjective symptomatology. There is no known cure nor a recommended therapeutic diet to aid in the multidisciplinary treatment for FMS. A systematic review was conducted to investigate if diets can improve the pain symptoms of fibromyalgia. A total of...
Purpose: Many programs are available to engage people in health-promoting behaviors or behavior change, but most target specific behavior outcomes (e.g., weight loss, smoking cessation) rather than wellness. This study aimed to assess the effectiveness of a tracking-based health challenge focused on overall wellness, with or without peer support.
Methods:...
Autonomous buoys were deployed in 2011 in the central Arctic: An Ice-Tethered Profiler (ITP) and Ice Mass Balance (IMB) buoys were deployed in the Makarov basin; a Polar Ocean Profiling System (POPS) and Ice Thickness (Ice-T) buoy were deployed on the Eurasian Basin. The two different sites were approximately 70km...
This project consists of the analysis, design, and manufacturing of the 2016 cooling system for Global Formula Racing’s combustion vehicle. Several water configurations were examined, using computational fluid dynamics (CFD) to estimate airflow and heat transfer calculations in MATLAB to estimate heat rejection through each concept. Data used to perform...
The Fishermen Led Injury Prevention Program is the first and only research focused on non-fatal injury prevention among commercial fishermen.
• No fishermen reported that they had zero chance of injury, regardless of injuries sustained in career and/or in the past year.
• Fishermen who have sustained an injury...
Heightened cortisol levels are a typical physiological response to stress. The many responsibilities of animal shelter workers can lead to increased stress levels and negative effects on their job satisfaction and overall wellness. As a result, workers are subject to burnout and compassion fatigue. While working in shelter environments may...
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...
The aim of this study was to evaluate the effects of intranasally administered oxytocin on the sociability of adult, neutered, male and female shelter cats, as measured by proximity-seeking behavior and meow vocalizations. Two local Humane Societies were sampled in this study. The shelter cats were randomly assigned to one...
Aging is a major risk factor for the deterioration of biochemical pathways that lead to many chronic neurodegenerative disorders (i.e. Parkinson’s and Alzheimer's Disease). Cellular senescence is a hallmark of aging, a condition characterized by stable growth arrest resulting in a cell that no longer divides, but is metabolically active....
Veterinary medicine impacts everyone in the world to some degree and veterinary medicine is taught in some format in every country across the globe. However, veterinary education differs between countries due to the environmental and cultural variations. The purpose of this study was to investigate how veterinarians are trained in...
The relationship between physicians and patients is undeniably unique. To understand the qualities of a healing relationship, it is essential to analyze the perceptions that influence physician behavior. Metaphors and relationship models are often used in bioethics to analyze the construction of perceptions. The goal of this study is to...
Sweetpotatoes are a highly nutritious staple crop, playing an important role in global nutritional security. Although the majority of research in the United States (U.S.) focuses on the cultivation of the storage roots, both the leaves and roots are edible. Sweetpotatoes are indigenous to the Andes Region of South America;...
OVERVIEW OF INTRODUCTION - This is a combined thesis for both disciplines of BioResource Research (BRR)Interdisciplinary and International Degree (ID) Programs OSU. The first chapter encompasses the BRR research, which is a preliminary study utilizing immunohistochemical method to characterize melanomas in bigenic mice with activated Cdk4 protein and Retinoid-X-Receptor α...
A better understanding of the distribution and spawning behavior of Crangon shrimp and their relationship with their predators, including the green sturgeon, Acipenser medirostris, is an important step toward the larger goal to understand food webs of the nearshore continental shelf of the northeastern Pacific. Here, I examined how the...