Recently, there has been an expansion of large-scale studies looking at strain variation of Brettanomyces. These studies have found variation between strains in terms of utilization of maltose and production of volatile phenols. While there is research going into this subject, there is a gap in knowledge regarding the differences...
Graphics of hair have been constantly improved since Kajiya’s famous teddy bear in 1989. By combining these concepts and real-world physics laws, I created a realistic representation of hair on a sphere-shaped head. OpenGL also provides a constantly updated display to continuously render the graphic. Using springs, the hair can...
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...
The clean cookstove sector has long sought the tools and analysis methods needed to accurately quantify social, environmental, and economic impacts of projects in diverse settings. To respond to this need, Climate Solutions Consulting and Oregon State University have developed a novel integrated suite of sensors to collect fuel usage...
Background: Individuals rapidly infer character traits and behaviors through the process of facial perception. Perceptions of trustworthiness, accurate or not, completed by authorities in the criminal justice system may have implications for individuals suspected of crimes, including harsher or longer sentencing decisions. Objective: The present study concerned how the presence...
Instance segmentation, the classification and localization of objects in an image, is a problem in cellular biophysics due to the physiological relevance of cell morphology. Particularly, cancer cells migrate in tissue space by changing their body shape similarly to how humans extend their limbs to swim through water. Monitoring such...
When Charles Guiteau killed U.S. President James Garfield, he claimed that God had ordered him to do so. During his trial, Guiteau’s lawyers plead not guilty by reason of insanity, and the question of Guiteau’s innocence or guilt quickly became a question about the very nature of insanity itself. In...
A new class at Oregon State, PH 317: Experimental Physics, is designed to simulate a traditional laboratory research experience for undergraduate students. Several weeks of the class is devoted to Brownian motion experiments. Although this is a common topic for undergraduate lab classes, the experiment still needed some basic exploration...
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...
The ocean provides many ecosystems services and yet humans have viewed the ocean as a black hole for trash since the 1950s. With recycling not getting to the source of the problem, smarter consumer choices are being targeted, specifically choices centered around the use of plastic. Thus efficient, useful communication...
The intent of this thesis is to develop three creative non-fiction essays exploring the experience of being an undergraduate woman in a STEM field. The essays will all take on variations in form, humor, and perspectives. The purpose is to explore the position of women in STEM and the different...
Reducing garment waste and finding sustainable alternatives within the apparel industry has gained momentum in recent years as concerns increase towards the polluting nature of the industry. Designing for longevity, by focusing on aspects such as emotional and physical durability have been cited as possible solutions. The purpose of this...
This study examines the relationship between an invasive annual grass, Ventenata dubia, and fire behavior in three non-forested ecotypes within the Ochoco National Forest: stiff sage, low sage, and wet meadows. Fire is an essential ecological function of ecotypes found within the Ochoco landscape. The stiff sage ecotype is a...
Heavy metals have historically been popular for use in cosmetics manufacturing due to the colorful pigmentation of heavy metal compounds. In the case of sindoor, a cosmetic used by married Hindu women for religious purposes, mercury sulfide, lead tetroxide, and lead chromate are compounds suspected to still be involved in...
Collaborative governance plays a significant role in forest management on public land in the Pacific Northwest. The method of governance offers the unique ability to engage a diverse range of stakeholders to reach consensus regarding forest management action. Evaluating the dynamics of the collaborative and its members is essential to...
It is well known that in-stream large wood affects river channel shape, sediment deposits, stream flow, and available habitat for aquatic species. However, less is known about how wildlife interact with this large wood. Previous research has shown that small mammals and birds utilize woody debris in river channels for...
With a growing demand for renewable sources of freshwater around the world, stormwater offers a potential solution. However, various pollutants can be present within stormwater, such as antibiotic-resistant bacteria, that present a danger to human health if stormwater is used for agricultural purposes. Biochar has the capability to remove bacteria...
This study sought to understand the unique challenges that housing insecurity programs faced during the COVID-19 pandemic. An anonymous Qualtrics survey, containing closed- and open-ended questions, was sent to housing insecurity programs in Benton County, Oregon. Questions focused on how the COVID-19 pandemic affected services and how programs adjusted to...
The ever-increasing global population presents looming problems for the field of agriculture. Global food demand will, at some point, increase to the point where there is not enough crop-ready land to keep up. This creates an additional incentive, other than economics, for growers to increase their yield-per-acre and make sure...
The nucleocapsid protein (N protein) of the severe acute respiratory syndrome coronavirus 2 is known to play an essential part of the virus’ functions. The N protein can protect and package the large 29,903 nucleotide genomic RNA whilst also interacting with structural membrane protein M and the spike protein S....
Purpose: The transition into college can be a stressful and tense time for students. This study aimed to examine the effect of peer involvement in the creation and maintenance of health-oriented habits. Behaviors such as flossing, eating breakfast, drinking water, and increasing fruit and vegetable intake were all recorded while...
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,...
Youth in the United States of America are disproportionately affected by the School-to-Prison Pipeline, especially low-income and/or BIPOC youth. This is a result of centuries of historical classism and racism that serve as the foundation of the United States and is directly correlated with mass incarceration and the Prison Industrial...
BoGL is a programming language created for the purpose of computer science education that is specific to the domain of board games. Although there is a language grammar and an existing implementation that is currently used by students, a complete and formal language standard does not yet exist. In the...
Detecting gravitational waves is a topic at the forefront of physics. The first gravitational wave was detected by LIGO in 2015. This wave had a frequency in the 10s of Hz. This project is focused on detecting gravitational waves on the nanohertz spectrum using a pulsar timing array. This array...
The relationship between partisan gerrymandering and voter participation has still not been fully understood. Although it is clear that there are many factors that affect voter participation, the effect of gerrymandering on voter participation still has not been studied. In this study, I will be examining if partisan gerrymandering affects...
Gravitational waves (GWs) are disturbances in spacetime that can be caused by events such as black hole mergers and supernovae, as well as continuous sources such as binary star systems. GWs offer a new avenue of astrophysical research and can reveal information about the early universe. GW detection can be...
Many pollination studies with honey bees have examined the effect of colony density on crop yield and yet overlook the effect of variation in the population size of these colonies. High colony density in northern highbush blueberry has been met with concerns from beekeepers who feel higher densities will intensify...
The intention of this undergraduate research project was to design and build a fully functional high-vacuum chamber testing environment for use in the development of ion propulsion engines. This project was conducted in an effort to aid ongoing projects between the Deep Space Propulsion Group (DSPG) at Oregon State University...
Integrated Distributed Electric Augmented Lift (IDEAL) applies upper surface blowing in a novel way to achieve electric short take-off and landing to meet the growing need for urban air transportation. Additional research on propulsion airframe interaction (PAI) with trailing edge flaps at low Reynolds numbers was necessary to advance the...
In liquid sodium environments like those proposed for next-generation sodium fast reactors (SFRs), the presence of impurities in the sodium, particularly chemical species containing oxygen, can lead to increased corrosion on sodium-wetted components. It is important to monitor oxygen concentration in the sodium melt, but temperatures of 500 ℃ and...
This research was an attempt at gaining insight into the nature of the incompressibility conditions of the Navier-Stokes Equations on the Unit Circle. We realized the Riesz transformation is given in R^3 after taking the Fourier Transform of the Neumann Boundary Value problem, but this is not well defined on...
Gravitational wave (GW) astronomy is a key ingredient in confirming Einstein’s theory of General Relativity and showing how the universe sends ripples through spacetime, distorting distances between two points. The confirmation of high-frequency GWs observed by The Laser Interferometer Gravitational-Wave Observatory (LIGO) in 2015 was a breakthrough in our understanding...
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...
Impedance spectroscopy is a method of modeling materials with equivalent circuits to determine electrical properties, such as the resistivity and the dielectric constant. We explore impedance spectroscopy, both theoretically and experimentally through applying the method to samples of BaCuS1-xSexF. Grain boundary effects were dominant in the results, and although they...
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...
In anatomical education, clinicians, surgeons, and anatomists support the use of human cadavers over digital or artificial alternatives. Cadaver use raises the challenge of preventing tissue dehydration. The OSU cadaver labs attempt to maintain hydration by re-covering the exposed tissues with original skin, layers of plastic wrap, and/or towels and...
The forebody wake effect (FWE) is important to consider when designing parachute systems because it can affect parachute performance. Parachutes work by altering the aerodynamic properties of an attached forebody to control a descent. The FWE can reduce parachute drag, causing the system to descend faster than desired. This drag...
Terahertz (THz) frequencies of the electromagnetic spectrum have been underutilized when compared to neighboring microwave and infrared frequencies, largely due to the difficulties controlling and detecting these fields. In a step toward gaining control over THz frequencies, my advisor Dr. Yun-Shik Lee’s group experimentally demonstrated optical-pulse THz-control over a plasmonic...
Organic semiconducting materials have emerged in the last few decades as viable alternatives to inorganics in broad applications from field effect transistors to LEDs to solar cells. Organics provide many benefits over inorganics such as flexibility, sustainability, and reduced cost. However, these materials are more susceptible to degradation in the...
Metal Organic Framework Structures (MOFs) have shown great promise for use in gas storage. Computer simulations have been touted as a method to identify strong candidate molecules for experimental research. This project assessed the relationship between computer simulations of methane absorption and experimental gas absorption. We acquired experimental data and...
Across the globe, Marine Protected Areas (MPAs) have been established to protect biodiversity, sustain fisheries, and preserve cultural resources. However, there exist broad differences among MPAs with respect to their establishment stage and protective regulations, making it difficult to quantify how much ocean protection is actually occurring. This thesis utilizes...
Oregon State University has accepted datasets in their institutional repository, ScholarsArchive@OSU, since 2013. In 2019, we modified our review process to include datasets that include human subjects research. In order to do that we had several meetings with the university’s Institutional Review Board, which led to both of us modifying...
Acute myeloid leukemia (AML) is a blood malignancy characterized by a differentiation and proliferation defect of myeloid progenitors leading to accumulation of myeloid blasts. It is one of the most common leukemias in adults. Trametinib (Mekinist) is a small molecule inhibitor that targets MEK1 (MAP2K1) and MEK2 (MAPK2K2). It has...
As it was conceptualized, the manual is aligned with other field manual that are currently in use by different universities, such as Mississippi State University, Stephen F Austin, or University of British Columbia. The present manual is the first unified version of Louisiana Tech University of a Field Manual to...
An overview of the Honors College colloquium, "The Hidden History of Women at Oregon State University" prepared for presentation to an audience of OSU Honors College alumni.
Oregon Digital is a cultural heritage digital library that emphasizes the history of Oregon and the histories of the University of Oregon and Oregon State University. Originally released in 2014, Oregon Digital is currently being upgraded to the latest version of the Samvera community’s Hyrax release, a process that is...
This dataset accompanies the manuscript Unintended consequences of selective water withdrawals from reservoirs alter downstream macroinvertebrate communities in Water Resources Research.
Benthic macroinvertebrates were collected from samples taken annually during the first two weeks of August from 2002-2007 and again in 2017 at six sites in the South Fork McKenzie...
Human Papillomavirus (HPV) is so common that about 80% of those in the United States will acquire it during their lifetime. In more serious cases, HPV can develop into cancer: each year in the U.S., there are around 32,000 HPV related cancer diagnoses. The HPV vaccine series can prevent the...