Surface acoustic wave (SAW) sensors are versatile devices that can be configured to sense a variety of measurands such as temperature and pressure. The potential use of surface acoustic wave devices for magnetic field detection is explored in this study. Compared to current magnetic field sensors, a sensor based on...
In the fall of 2005, I studied abroad in Athens, Greece for one term. This is retelling of experiences that I had, written in the style of my memories. While I was in Greece, I kept an electronic diary, a picture diary, and a scrapbook to keep my memories vivid...
Un Paseo Encantado, an enchanted walk, is a collection of my observations and experiences in a study abroad program in Oviedo, Spain. My commentary on Spanish culture is based on reading I did prior my departure, in combination with my observations while in Spain. In six chapters, I explore the...
Otoferlin is a protein that is essential in the process of hearing. Mutations in otoferlin are associated with profound recessive deafness. The long-term goal of the Johnson lab is to understand how otoferlin contributes to hearing and why certain mutations result in deafness. This project sought to characterize the difference...
Perennial ryegrass (Lolium perenne) hay is an important source of forage for a variety of livestock species, and is most common in cool, coastal climates such as the Pacific Northwest. An endophyte fungus called Neotyphodium lolii frequently colonizes this grass to promote insect resistance, drought tolerance, and growth enhancement without...
The prevalence of overweight and obesity in children and adolescents continues to rise
and is considered a major public health problem. The aim of this investigation was to
evaluate the contributions of sport participation, and calcium intake (controlling for mean
energy intake, sex, and maturation status) on the development of...
The highly conserved multi-protein mismatch repair (MMR) system is known for its ability to correct post replication errors in genomic DNA. A hallmark of MMR deficiency in all organisms is microsatellite instability. The initiating proteins in the eukaryotic MMR system are hetrodimers formed with an integral MSH2 subunit and one...
Over 76 cities throughout the United States have already adopted policies to limit the expansion of natural gas, mainly through updates to city codes that ban natural gas infrastructure in new construction. Rising concern over the environmental and public health impacts of methane - a greenhouse gas with a much...
Sablefish is a highly sought after seafood delicacy for which aquaculture of this species has recently been developed. By understanding the immunological functions in sablefish, our goal was to develop a mammalian fluorescent bioparticle assay that can viably analyze the efficiency of phagocytosis, an important function of the immune system....
The majority of people suffer from back pain at some point in their lives. Back pain is the leading cause of disability globally, ahead of 290 other conditions1. Over one million people in the United States receive spine surgery annually2. This thesis looked at five standard surgical procedures performed on...
Genetic code expansion (GCE) is a technology that allows us to incorporate noncanonical amino acids (ncAAs) site-specifically into recombinant proteins using engineered translational machinery. Typically, an orthogonal aaRS/tRNA pair is engineered by directed evolution to recognize the ncAA and incorporate it at a reassigned codon while not interacting with the...
Polycyclic aromatic hydrocarbons (PAHs) are a known class of chemicals that are linked to a multitude of adverse health outcomes. There are over 1,500 of these chemicals across various families and subgroups. 16 of these PAHs, known as parent PAHs, are identified by the EPA for focused risk assessment within...
An apparatus and method for calibrating planar laser induced fluorescence using a two-dye, two-color method was developed. A laser sheet was expanded from a 473 nm laser to excite dye solutions into higher energy states then fluoresced through spontaneous emission. The two fluorescent dyes selected for research and development were...
Background:
There are over four billion YouTube views per day with “music” the most searched topic. Among US internet users, 8.3 million YouTube users are under 18 years old. Incorporation of substance use imagery in YouTube videos has a considerable potential influence on young viewing audience behavior. This study identifies...
Cells are constantly bombarded with mutagens, both endogenous and exogenous in origin. Endogenous sources of mutation include reactive oxygen species formed during aerobic respiration, replication errors by DNA polymerase, and spontaneous deamination and depurination (Jackson 2009). Exogenous sources of mutation include UV and ionizing radiation, aflatoxins, and polycyclic aromatic hydrocarbons...
A unique, permanent root-growth arrest phenotype was observed in UV-B irradiated Arabidopsis thaliana roots lacking the DNA damage response kinase ATR. Segregation analysis suggests the dependence of this phenotype on another, unidentified gene, termed ursu. High-throughput sequencing technologies were used to map and identify the causal ursu mutation. Illumina HiSeq...
China’s global influence in the realm of science and technology (S&T) has increased dramatically in recent times. China and the United States are now each other’s main partner in scientific collaboration. As a major research university, OSU is one of the institutions with a large stake in this international collaboration....
In ethnographic research, an anthropologist becomes integrated in the community of their study. Throughout this process, the anthropologist adapts to the cultural practices and the language of this community, becoming intimately connected to them. Ethnography communicates, through the anthropologist’s experience, crucial practices, tensions, and values discovered during research. However, it...
St. Augustine was an influential member of the early Christian Church, establishing many doctrines of the Christian faith. One of his most significant contributions to Christianity was a Christian philosophy of history. Augustine defined the purpose of history as God providing salvation to humanity after the fall of Adam. This...
I always knew I was interested in the criminal justice system, evident from the hours I spent as a child binge watching Law & Order, Rizzoli and Isles, and Dateline when my parents weren’t home. I very nearly pursued criminal justice as a major, but ended up going a different...
Aging and excessive weight appear to be problematic to lateral balance related to falls. Strong frontal plane hip muscle strength is needed to stabilize the hip statically during single leg stance or dynamically during lateral stepping; however, the length of single leg stance time and maximum hip abduction angle during...
The symbiotic sea anemone Exaiptasia diaphana (Aiptasia) is a model organism used to better understand cnidarian-algal symbiosis and coral bleaching (dysbiosis). Many biological processes are hypothesized to be involved in coral dysbiosis, and the innate immunity is a key area of interest. Rab proteins are small proteins with GTPase domains,...
YouTube is a free video watching and uploading site that allows endorsing and
sharing of videos. Youth and adolescents as top viewers of YouTube may be exposed to
images and messages on tobacco, marijuana and alcohol use behaviors.
The research project entailed deriving a list of songs from the 2014...
Genetic and environmental factors influence individual cancer risk. Mutations in DNA mismatch repair (MMR) genes increase colon cancer risk. Exposure to carcinogens, including the ubiquitous polycyclic aromatic hydrocarbons (PAHs), also is associated with increased cancer risk. To understand the combined effects of both environmental exposures and genetic risk, we investigated...
The Sweet Roll is a podcast centered around discussion of the latest video and tabletop games. It includes news briefs, game reviews, and interviews with industry professionals and gaming celebrities. The target audience is men and women aged 14-35 who play virtual and tabletop games as a hobby. This audience...
Sea turtles are endangered species that can be censused with aerial surveys, but the number of turtles in an area must be extrapolated to include animals that are submerged. Twenty-one satellite tags were attached to juvenile loggerhead sea turtles (Caretta caretta) in North Carolina. I analyzed surfacing and dive behavior...
The Sortase A (SrtA) enzyme is a potential target for a new class of anti-infective drugs
because it is responsible for anchoring virulence factors to the surface of pathogenic,
Gram-positive bacteria such as Staphylococcus aureus. High throughput screening
yielded low molecular weight compounds that inhibit purified SrtA from S. aureus....
A set of flour samples with protein content ranging from 9.7 - 13.3 % was used for this study to evaluate the effectiveness of HMW-GS, SEHPLC and mixograph characteristics as screening tools for noodle texture. The sample set had a large variation in HMW-GS composition with Payne score ranging from...
To understand the forces exerted on structures during tsunamis, model cities are subjected to human-generated tsunamis. The study of vertical evacuation, wherein individuals could take refuge in the upper levels of strong buildings, has resulted in a growing need for a low cost wireless acceleration data logger. Such a device...
In current nanotoxicology research, there is a lack of standardization in reporting of zebrafish exposure media and sonication practices. This lack of standardization in use and reporting methods has made reproducing nanoparticle (NP) toxicity results between labs a common issue. It is important to have a standardized way of reporting...
The NKUA1 is a Small Fission Surface Power (SFSP) space reactor intended for use in upcoming missions to Mars and the moon between the years 2020-2030. The concept of the reactor was created by Dr. Lee Mason and his research team in a joint effort between the Department of Energy...
This paper explores Jazz music during the Cold War. During the Cold War the U.S. went through a process of becoming more explicitly religious, identifying specifically a Judeo-Christian country. Particularly through foreign policy, the separation between church and state became less and less clear to the point where it seemed...
In recent years, simulated laboratory experiences have become more prevalent in educational curricula. These simulations, called virtual labs, can enable learning in ways that are not limited by physical constraints. The development of virtual labs is often ad hoc, resulting in unnecessary, repetitive work. The purpose of this thesis is...
Hemodynamic forces regulate vascular homeostasis and arterial structure through mechanical stimuli by a process called mechanotransduction. Cellular response to mechanical forces involves coordination between cell surface receptors and intracellular signaling pathways. While previous work has focused on the role of integrin receptors in mechanotransduction, little is known about the role...
One of the most important components in the safety analysis of a nuclear reactor is its critical heat flux (CHF), as it can compromise the structural integrity of the clad and lead to the release of fission products into the primary coolant. Groeneveld et. al. has published a series of...
Neonatal jaundice secondary to hyperbilirubinemia occurs in 60% of all term newborns and nearly all preterm newborns in the US. Severe cases of this may lead to chronic encephalopathy, neurologic deficits, and, in some cases, death. Intensive blue light phototherapy involves irradiation of a patient with high intensity light and...
DNA mismatch repair (MMR) plays an important role in preserving genomic stability and reducing cancer risk. Environmental exposures to polycyclic aromatic hydrocarbons (PAHs) are believed to contribute significantly to carcinogenesis. PAHs are found in food, air, water and soil and upon bioactivation can form diol epoxides which are electrophilic in...
Biosphere models predict the transport of radionuclides in the environment with an end goal of assessing the possible risk to humans. Little data exists to support these mathematical biosphere models. The objectives of this work were to verify foliar uptake in biosphere models using experimental data, compare existing biosphere models...
Coming of Age is a collection of ekphrastic poetry inspired by photographs taken throughout Oregon between 2012-2018. The collection traces the author's experience as she transitions from teenager to adult, struggles with change and loss, and studies to become a chemical engineer.
Key Words: ekphrastic poetry, prose poetry, poetry, photography,...
Falls are a significant public health issue for older adults, with different fall rates and risk factors among genders. In order to slow or stop a fall, an individual must be able to produce significant eccentric joint power in the lower extremities. It is unclear whether there is a relationship...
This work describes a method for incorporating patient data into a nutrient transport model of the intervertebral disc.This data was collected using MRI diffusion weighted imaging (DWI), and was converted into an apparent diffusion coefficient map (ADC map). This map was used to define the diffusion behavior of water within...
As juvenile salmon migrate from freshwater into saltwater, physiological changes must occur to allow fish to osmoregulate in the marine environment. Juvenile spring Chinook salmon migrate to the ocean at different time periods, most notably in the fall (August – November; i.e. fall smolts) and spring (February – May; i.e....
While rib stress injuries (RSI) may be common and documented at an elite or international level in rowing, there is limited information at the collegiate level. Specifically, identifying occurrence and differentiating acute from overuse onset, stratifying by time-lost (time-loss or non-time-loss) may provide sports medicine clinicians, rowers, and coaches a...
Purpose: This study examines the relationship between community-based fitness class participation and risk for falls in adults aged 55 or older. Our aim was to compare scores on fall risk factors between community-based Better Bones & Balance® (BBB) participants and active peers who engage in other (non-BBB) community-based fitness classes....
Family influence in the home environment has been linked to children’s nutrition and physical activity behaviors. However few tools exist to identify family level behaviors and families’ readiness to change those behaviors, particularly for populations at high risk for obesity such as Hispanics. This study summarizes the relationships of similar...
Degeneration of the intervertebral disc (IVD) is a phenomenon that has yet to be adequately addressed. Treatment options remain limited and incomplete. The ability to effectively cryopreserve IVDs would allow for better allograft transplantations and storage of samples for research purposes. This study aimed to assess how cryopreservation with different...
Purpose: This study examines the relationship between food insecurity (FI) risk and families’ readiness to change obesity-preventing behaviors within rural home-environments.
Methods: Families (n=144) were recruited through six elementary schools (K-5/6) in low-income, rural, Oregon communities. Families completed surveys including a FI risk screener and the Family Stage of Change...
Nanophyetus salmincola is a well-studied parasite of their definitive mammal hosts. However, the conditions that signal the time for shedding of N. salmincola cercariae from their first host, the juga snail (Juga silicula), is not fully understood. A digenetic trematode indigenous to the American Pacific Northwest, N. salmincola can be...
Pyrenophora tritici-repentis (Ptr) is the fungal causal agent of the disease tan spot in wheat and causes necrosis and chlorosis in infected leaves. These symptoms are caused by host-selective toxins (HSTs), molecules that serve as the sole determinants of pathogenicity. Ptr has three known HSTs, the proteinaceous Ptr ToxA and...
There has been an extensive amount of information and research circulated regarding baseball injuries in both the shoulder and elbow, though there has been a lack of research on female softball athletes who have the same injuries. The purpose of this paper is to compare baseball and softball shoulder and...
This project aims to challenge traditional beliefs about the emotional and psychological meanings of colors, which are often limited in the Western world. The psychology of color is heavily present in nearly every aspect of our lives, and this continual reinforcement of each color’s assigned meaning ignores and discourages the...
This is a report on the Workforce Development: Youth Training and Work Experience program provided by Casa Latinos Unidos (CLU) in Linn County. The program is best described in three phases. Phase one consisted of the outreach, recruitment, and retainment aspects of the program. The second phase of the program...
Throughout Oregon State University, a permanent, publicly-owned art collection not only exists under the radar of most people's awareness, this collection is part of a state mandate in existence since the late 1970's and too manages to slip most people's awareness at all. It is the Percent for Art Collection,...
POSTER ABSTRACT: This study seeks to diagnose systemic issues facing the Oregon State University (OSU) Student Sustainability Initiative (SSI) and identify solutions with the greatest potential to improve the program. This study has to potential to provide similarly sized, structured, and focused organizations with a starting place for their own...
Port-Orford-cedar (POC) (Chamaecyparis lawsoniana (A. Murl.) Parl) is an
important tree species native the coastal ranges of southern Oregon and northern
California. The tree is a false-cedar in the cypress (Cupressaceae) family and is used for
timber and planted as an ornamental. The tree in most of its native range...
Oxylipins are a class of bioactive lipid metabolites derived from polyunsaturated fatty acids (PUFAs) via enzymatic and non-enzymatic pathways. In order to elucidate their overall biological effects, the knowledge of the entire oxylipin profile is needed as oxylipins can have similar or opposing effects in regard to inflammatory events. Their...
Research in Dolan lab focuses primarily on the adaptive immune system and ways it can be better utilized to eliminate infected or transformed cells. Research focuses on the major histocompatibility (MHC) class I antigen presentation pathway, which plays an important role in alerting the immune system of the presence of...
The purpose of this project is to characterize mixing effects of the Beta 2 tool that is under development by the Hewlett Packard Pinot team. By optimization of a stage oscillation process, the undesirable effects of a locally high concentrated drug elution within a well plate can be alleviated. This...
Beneficial insects could provide valuable pest control services on Oregon Christmas tree farms, but a limited amount of data exist that quantifies the type and abundance of beneficial insects on farms. This study surveyed beneficial insects on two farms that differed in their management strategies as well as other abiotic...
Beneficial insects could provide valuable pest control services on Oregon Christmas tree farms, but a limited amount of data exist that quantifies the type and abundance of beneficial insects on farms. This study surveyed beneficial insects on two farms that differed in their management strategies as well as other abiotic...
Community births are defined as a planned home or birth center birth. Today, the majority of births in the U.S. occur in the hospital, but the U.S. has the highest maternal mortality rates of any developed country. Although community births have comparable outcomes, there is an extreme preference for hospital...
Children’s self-regulation, or the ability for one to regulate their emotions and behaviors, is very important for children to succeed in school, and life in general. This study looks at the relationship between a child’s self-regulation in the fall of their kindergarten year and different aspects of family and the...
Vitiligo is a disease characterized by depigmented patches of skin. The disease is known to involve the loss of melanocytes in the basal layer of the skin in affected areas, but the underlying mechanisms are unknown. Recent evidence suggests oxidative stress and disruptions to antioxidant pathways contribute to an autoimmune...
Self-regulation is a cognitive mechanism that allows children to maintain control over their behaviors and emotions. The importance of this function is well-documented, but there is less understanding of the factors that affect children’s development of self-regulation. Therefore, the objective of this study is to examine if parent stress in...
Platelet activation uses a complex set of pathways to respond to vascular injury during hemostasis. However, thrombosis relies on the same set of pathways. Antiplatelet therapies used to prevent thrombotic events often target the P2Y₁₂ platelet receptor for inhibition but can result in bleeding diathesis or in abnormally high ADP...
One of the principal drivers of climate change is the concentration of greenhouse gases such as CO2 in the atmosphere. A large portion of this CO2 ends up in the waters off the continental coasts where it transforms into biomass. The major sink for this matter is the ocean sediments...
Erwinia amylovora is a plant pathogenic bacterium that causes the destructive disease fire blight of apple and pear. We examined the plasmid content of a collection of 305 isolates of E. amylovora from Washington and Oregon with PCR assays and RFLP. Nearly all isolates of E. amylovora carried plasmid pEA29,...
An organisms' genotype may not be reflected in its phenotype. For example, epistasis - the interaction of non-allelic genes can cause deviations from expected phenotypic ratios. The epistatic interaction between the hooded (Kap) and short-awned (lks2) loci in barley (Hordeum vulgare) precludes the localization of the Kap locus, based on...
Maintenance of optimal nutrient supplies is fundamental to the functioning of
vertebrate, invertebrate, bacterial and plant physiology. Organisms on this planet compete
with each other primarily to fulfill nutritional needs in order to maximize their health,
wellbeing, and reproductive success. Here we examine nutrient concentrations in several
different grass species...
Sea turtles are endangered species that can be censused with aerial surveys, but the number of turtles in an area must be extrapolated to include animals that are submerged. Twenty-one satellite tags were attached to juvenile loggerhead sea turtles (Caretta caretta) in North Carolina. I analyzed surfacing and dive behavior...
For centuries economists have attempted to explain what causes the ebb and flow of the economy. None thus far have been able to perfectly explain the nuances of the economy as a whole. In this paper, I explore the relationship between consumer lending volume and economic growth. Consumer lending is...
Background: The ability to produce rapid muscle force and joint torque is important for performance in sports, injury prevention and rehabilitation, and balance recovery. One way to measure rapid torque production is rate of torque development (RTD), which is the slope of the torque-time curve. Interventions aimed at increasing RTD...