Up to 23 million metric tons of mismanaged plastics enter the global ocean annually. Microplastics (MPs;<5mm) degrading. MPs leak into the environment and now pervade every corner of the earth, with implications for animal, plant, ecosystem and human health. It is important to understand localized environmental MP prevalence, distribution and...
Premature birth interrupts the typical development of the human fetus, leaving the infant born with underdeveloped gastrointestinal and immune systems. Preterm infants have reduced stomach acidity, reduced digestive protease activity, more permeable intestinal membranes, impaired innate and adaptive immune response, and poor microbiome development. Due to these factors, preterm infants...
As of September 2020, three of the outputs mandated under the Streamflow Restoration Act have been completed. However, little has been done to assess the quality of these plans. By using the Characteristics of Plan Quality That Serve as Evaluation Criteria to evaluate the plans completed so far, this research...
People find it difficult to do tasks which are related to maintaining correct posture. For activities related to performing a posture routine correctly by oneself, unfortunately there aren’t many systems out there which help people to do so and provide feedback on what went wrong and how they could improve...
The total kinetic energy (TKE) in the fast neutron induced fission of 237Np was measured for neutron energies from En = 2.6 – 45.7 MeV at the LANSCE- WNR facility. The postTKE release decreases non-linearly with increasing incident neutron energy and can be represented as TKE(MeV) = (169.365 ± 1.551)...
African rhinoceros, once abundant across Africa, face threats to their long-term survival primarily due to the syndicated poaching of their horns for Traditional Asian Medicine and as status symbols in Asia. Most studies focusing on the human dimensions of rhinoceros poaching have been limited to examining a few aspects of...
Wastewater treatment plants are considered one of the main sources and reservoirs of antimicrobial resistance (AMR). This study investigated the prevalence of 8 different phenotypes of AMR, multi-drug resistant (MDR), and extended-spectrum beta-lactamases (ESBL) producing E. coli in 17 wastewater treatment plants across Oregon in winter and summer of 2019...
Ewing sarcoma (EwS) is the second most highly malignant tumor that arises mainly from bone and surrounding soft tissue of adolescent and young adult patients. Despite the advances in Ewing sarcoma treatment that today include a combination of five chemotherapeutic agents, surgery, and/or radiotherapy, these therapies have demonstrated limited improvement...
Agricultural systems are inherently complex; understanding these systems requires knowledge of climatology, plant physiology, soil physics, economics, and the human psychology of the farmers themselves. Decision support tools strive to leverage existing data to help guide stakeholders towards the best policies and practices for their situation. Quantitative crop simulation models...
Like many institutions, we had to quickly shift from print only to digital course reserves. With Ex Libris’s digital resources system we were able to provide electronic course reserves. Our experience with Alma-D shows how to launch programs creatively, working within your system’s constraints to support your patrons’ academic needs....
Proceedings of the 80th Annual Pacific Northwest Insect Management Conference, held virtually January 4-5, 2021.
These are research reports only, not management recommendations.
Proceedings of the 77th Annual Pacific Northwest Insect Management Conference, held January 8-9, 2018 at the Hilton Hotel in Portland, Oregon.
These are research reports only, not management recommendations.
Proceedings of the 78th Annual Pacific Northwest Insect Management Conference, held January 7-8, 2019 at the Hilton Hotel in Portland, Oregon.
These are research reports only, not management recommendations.
Proceedings of the 79th Annual Pacific Northwest Insect Management Conference, held January 6-7, 2020 at the Hilton Hotel in Portland, Oregon. These are research reports only, not management recommendations.
Riparian ecosystems provide critical habitat for a broad diversity of aquatic and terrestrial species. However, due to their connectivity along river corridors, and the tendency for people to build roads, infrastructure, and other settlements next to rivers, riparian ecosystems are vulnerable to colonization by invasive plant and animal species. Early...
Polyphenolic compounds found in foods such as fruits, vegetables, legumes, nuts and grains, are an integral part of the human diet. Within polyphenols, proanthocyanidins are referred to as condensed tannins and encompass procyanidins, propelargonidins and prodelphinidins. Among these, procyanidins are the largest group. Recent interest in these compounds is related...
Streams and rivers play a critical role in global carbon (C) cycling by processing, storing, and transporting C. Headwater streams which make up more than 95% of the length of streams and rivers worldwide have disproportionate influence on fluvial C dynamics. The hyporheic zone (HZ) of headwater streams is a...
This study explores the role of emotions in extensive hydraulic projects that become part of nation-state building processes and have transboundary impact. The main objective is to investigate how political leadership uses emotional narratives to foster water nationalism in the case of the Southeastern Anatolian Project (GAP) in Turkey. The...
The aim of this dissertation is to construct a virtual element method (VEM) for models in magneto-hydrodynamics (MHD), an area that studies the behavior and properties of electrically conducting fluids such as a plasma. MHD models are a coupling of the Maxwell’s equations for electromagnetics and models for fluid flow....
E+A galaxies represent an important niche in galaxy evolution as a subset of post-starburst galaxies. Set apart from other post-starburst galaxies by their rapid quenching of star formation, E+As are thought to have started their formation outside a galaxy cluster's center and have fallen inward due to gravity; the star...
Reachability analysis enables the safety assurance of control systems despite uncertain initial conditions and control inputs, and can be an important component to run on-board an autonomous system. This thesis explores the characteristics of reachability analysis with different algorithmic configurations and runtime parameters running onboard the F1Tenth 1/10th-scale autonomous racing...
Wearable electronic devices are becoming increasingly widespread and are being used to fulfill a variety of needs. These devices range from purely infotainment type systems such as smartwatches and fitness oriented devices to specialized medical devices such as insulin pumps and heart-rate monitors. A challenge faced with all of these...
Chlamydia is an obligate intracellular bacterial pathogen that causes a variety of disease in animals and humans worldwide. Veterinary chlamydial pathogens can lead to chronic infections and serious consequences that result in millions of dollars of losses in animals and resources in the agricultural industry in countries that rear ruminants....
An intersection without a traffic light could be a potentially dangerous place to travel through depending on the mindsets of the of the travelers within it. When travelers are traversing an intersection, they generally have one of two different mindsets that influence the actions they do. One mindset they could...
Nonmelanoma skin cancer (NMSC) is the most common malignancy in Caucasian populations. One existing treatment modality for NMSCs is external radiotherapy delivered to the skin cancer tumor by a beta-emitter-containing radioactive skin patch. Alpha emitters, with their higher linear energy transfer than beta particles and shorter range in tissue, make...
All animals have developed the critical ability to detect, respond to, and detoxify a large array of environmental chemicals and stressors that can cause adverse health effects. Important examples of landmark contaminants around the world are polycyclic aromatic hydrocarbons (PAHs) and dioxins, both of which can act via the aryl...
Juniper (Juniperus spp.) woodlands are native but expanding ecological communities that were historically limited by the natural fire return interval of the sagebrush (Artemisia spp.) steppe. These woodlands are often a mix of pinyon pine (Pinus spp.) and juniper that have increased significantly over the last century. This expansion has...
The northern spotted owl (Strix occidentalis caurina; spotted owl) is of conservation concern and endemic to mature forests of the Pacific Northwest. Adult survival has a strong effect on population growth rate, but juvenile survival and recruitment are also important components of population change. Despite the importance of this life...
Non-destructive testing is a methodology to inspect production and operational parts for potential flaws, defects, or damages. The present work is based on pulsed wave thermography, a thermal imaging method based on heat conduction to identify surface and subsurface defects potentially present in a component. Pulsed wave thermography applies a...
Gut-brain communication consists of bidirectional routes between cognitive centers of the brain and peripheral intestines. This bidirectional communication is the result of the interplay between enteroendocrine cells (EECs), enteric nervous system, central nervous system, the vagus nerve, and our microbiota. Multiple studies have associated gut microbial dysbiosis with neurological disorders...
As part of the 2019 Botswana Global Health Internship Program, a qualitative study was conducted to identify the components key to the development of a comprehensive sexual and reproductive health education program to be implemented at the Junior Secondary School in Maunatlala, Botswana. The study was based on the principles...
Introduction: Research has demonstrated that minimal shoes may help prevent ankle injuries by mimicking natural barefoot running. It has been proven that minimal shoes may help adults prevent injuries in the correct conditions, but little is known about the effect of minimal and barefoot running on youth kinematics. Purpose: To...
Vitamin E (VitE) is necessary for vertebrate embryonic development. VitE prevents lipid peroxidation (LPO), which requires detoxification by cellular antioxidant systems subsequently involving reducing power derived from energy metabolism. Thus, VitE protects metabolic networks in the developing embryo and the integrated gene expression networks compensating for and impaired by LPO-induced...
BCL11B, also known as CTIP2, is a transcription factor which plays a critical role in the regulation and development of many tissues and organ systems, including the skin. A 2019 study by Goos et. al. uncovered a novel point mutation in BCL11B gene that converted the Arginine(R)-3 residue to a...
The goal of this thesis is to explore the possibility of an upgrade of materials used in the wing-structure of a high-performance light aircraft operating under severe aerodynamic and inertial loads. The case aircraft considered in the thesis is the Caproni A-21 SJ, an all-metal high-performance motorglider powered by two...
Objective: The goal of this project is to recreate aspects of the article “Comparison between convolutional neural networks and random forest for local climate zone classification in mega urban areas using Landsat images” (Yoo et al., 2019), where methods for predicting LCZ classes for four large cities throughout the world...
Under the influence of Covid-19, restaurants in Corvallis, OR have changed significantly. Different restaurants have their unique charm to ensure that demand from consumers is met and improved concurrently. How will the website design of each restaurant and other factors affect their ratings? Will these changes impact the current operation...
One of the biggest open questions in physics is the prevalence of matter over anti-matter in the present universe. One of possible answers lies in the violation of charge and parity symmetry in the lepton sector that would favor matter over anti-matter so that the universe becomes dominated by matter...
Due to its availability, versatility, structural capability, and economic advantages, concrete is the most widely used material in building sewer networks and other wastewater structures such as treatment stations, wastewater digesters, septic tanks, pumping stations, hydraulic risers, utility risers and covers, etc. Concrete structures exposed to sewer environments can experience...
Xanthohumol, a prenylated flavonoid found in hops and beer, possesses a long-standing reputation to improve health. Xanthohumol’s cytotoxicity to a wide variety of cancer cell lines is well-established. Herein we provide further insight into the cytotoxicity of not only xanthohumol, but also its non-estrogenic derivatives, to a number of colonic...
Manned missions beyond low-Earth orbit present tremendous, multifaceted radiological challenges. The deep space radiation environment contains high-energy protons and heavy ions, which are not sufficiently shielded by the aluminum alloys that have historically been used in spacecraft. To address these shielding concerns, polymer-based nanocomposites have been proposed. Radiation transport simulations...
The Comprehensive Nuclear-Test-Ban Treaty (CTBT) prohibits the testing of nuclear weapons on the face of the earth. The detection of atmospheric radioxenon (131mXe, 133m/133Xe, and 135Xe) plays an important role in the identification of sub-surface clandestine nuclear weapon explosions. Since the radioxenon identified above decay via two radiation in coincidence,...
The purpose of this quantitative study was to identify the combination of factors, both individual and programmatic, that contributed most significantly to the persistence and progression of students enrolled in a public comprehensive community college. As open-access institutions, community colleges cater to students from a broad range of socioeconomic, cultural,...
This dissertation studies the development of the design procedures for Steel Slit Panel Frame (SSPF). The (SSPF) system is a seismic force-resisting system (SFRS) with ductile behavior and good energy dissipation up to 5\% to 7\% lateral drift that acting as seismic fuses. The current design guidelines provided valuable information...
For tuberizing crops like potato (Solanum tuberosum), the geocaulosphere, or the zone of soil in contact with and influenced by the tuber, is a distinct sphere of microbial life and represents an important interface between the potato crop and the soil environment. Upon potato harvest, specific geocaulosphere soil called tare...
Ocean Wave Energy Converters (WECs) are of interest around the globe as global economies begin to shift their interest to renewable forms of energy. However, the devices are costly to construct–a quality that can be relieved through proper modeling, control, and implementation. This paper presents the numerical and hybrid simulation...
Per- and polyfluoroalkyl substances (PFAS) are anthropogenic surfactants that have recently been identified as persistent organic pollutants. These so called “Forever Chemicals” have been detected in drinking waters, ground waters, soils, and consumer and industrial products globally; with environmental impacts stretching into the artic, far from known PFAS sources. The...
In Washington State, regional leaders have acknowledged the intrinsic value of nature and are striving to provide equal consideration to both human and nonhuman nature in the quest to restore the Puget Sound. But watershed-based committees supporting this work have faced challenges to effectively consider human wellbeing (HWB) in their...
Patterns of primary productivity in the Arctic are expected to change with continued warming, yet productivity measurements are historically limited, both spatially and temporally. An established method of measuring net biological oxygen production, which can be used to estimate net community production (NCP) rates, is with an equilibrated inlet mass...
The purpose of this dissertation was to contribute to deeper understanding of how men experience support seeking. The first manuscript is located in chapter 2 and titled A Qualitative Metasynthesis of Male Client Experiences of Counseling. This metasynthesis integrates sixteen pieces of qualitative research which contain first-person accounts of male...
Successive sampling population size estimation (SS-PSE) is a method used by government agencies and aid organizations around the world to estimate the size of hidden populations using data from respondent-driven sampling (RDS) surveys. SS-PSE ad-dresses a specific need in estimation and helps us evaluate the vulnerability of areas to HIV...
The variability introduced into measurements by a measuring instrument is referred to as measurement instrument precision. Experimental procedures and analysis methods exist when measurements are repeatable and can be repeated on the same item. However, when the measurements are destructive and repeated measurements are not possible, estimating measuring instrument precision...
Utilization of solar energy or wind energy for electricity production is inherently challenging due to the diurnal and seasonal variations and normal intermittency. Effective, high efficiency storage methods need to be developed for further advancing renewable energy utilization. Endothermic chemical processing and thermochemical energy storage can be both employed as...
High-performance mechatronic systems are widely used in precision manufacturing equipment such as CNC machine tools, 3D-Printers, photolithography systems, industrial robots, and Coordinate Measuring Machines (CMMs). These equipment are utilized in producing parts and components for aviation, semiconductor, optics, and many other emerging industries, with geometric features and surface properties within...
Chloride binding in Portland limestone cements (PLC) can be attributed to the chemical reaction between chloride ions and carboaluminate phases to form Friedel’s salt and the physical interaction between chloride ions and calcium-silicate-hydrates (C-S-H). This thesis examines the chloride binding of mortar samples containing varying amounts of limestone, fly ash,...
The discovery of GW170817 provided the first empirical evidence that merging binary neutron star systems are both progenitors of short gamma-ray bursts, as well as the primary sites of the nucleosynthetic rapid-neutron capture process. Initially detected as gravitational wave (GW) and gamma-ray burst (GRB) triggers, GW170817 was well-localized and follow-up...
Finding trees and crops that are resistant to pathogens is key in preparing for current and future disease threats. In this dissertation, we analyzed the potential of using hyperspectral imaging (HSI) to find infection while identifying issues and strategies addressing differences over time, in spatial resolution, the application of machine...
Given the immense energy potential of oshore wind and ocean waves, offshore renewable energy can significantly contribute to the renewable energy landscape. Fixed floating wind is already making strides internationally with increased electricity capacity, while floating offshore wind turbines and marine hydrokinetic (MHK) technology have significant potential that can...
Age-related diseases have been associated with chronic inflammation and impaired immune response, one of the hallmarks of aging. Aging individuals also have a higher susceptibility to zinc deficiency. The effects of zinc deficiency share many commonalities with the effects of aging on the immune system and zinc deficiency may be...
Understanding the impact of inter-molecular orientation on the optical proper-ties of organic semiconductors is important for designing next-generation organic (opto)electronic and photonic devices. However, fundamental aspects of how various features of molecular packing in crystalline systems determine the nature and dynamics of excitons have been a subject of debate. Toward...
Generally presented as a preferred social norm based on both ethical considerations and legislative demands, gender equality has been highly encouraged in recent years. For instance, The United Nations Sustainable Development Goals for 2030 call out achieving gender equality and empowerment of women. However, although there are multiple efforts to...
In 1947, scientists from the University of California departed for a fifteen-month expedition to Africa. Jessie Camp, wife of the head paleontologist Dr. Charles L. Camp, had no official position on the expedition. Yet in performing her traditional domestic duties, she greatly contributed to the overall success of the expedition....
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...
The number of Latinx students enrolling in higher education has grown significantly over the past two decades (Jabbar et al., 2019). This study explores a portion of that population by focusing on the experiences of Latinx transfer students at a 4-year institution within the Pacific Northwest of the United States....
Interference with the host post-translational mechanisms, such as protein phosphorylation, is a key strategy used by many intracellular bacterial pathogens to subvert host immune cell function. Virulent non-tuberculous Mycobacteria (NTMs) unlike attenuated or non-pathogenic NTMs, successfully reside and multiply within the phagosomes of phagocytic cells such as monocytes and macrophages....
In this dissertation, we propose Ideal Thumbnail-Preserving Encryption (Ideal TPE), as a special case of format-preserving encryption, to balance image privacy and usability concerns in a cloud environment. We first introduce a concrete construction for Ideal TPE, that provably leaks nothing about the plaintext (unencrypted) image beyond its thumbnail. We...
The end goal of any educational program is to prepare a student for the challenges they will see after completion of their studies. In the realm of engineering, the pinnacle of this occurs during a student’s final Capstone course series, where students are asked to apply their various skills learned...
Emergence of highly accurate Convolutional Neural Networks (CNNs) with the capability to process large datasets, has led to their popularity in many applications, including safety/security-sensitive (e.g. disease recognition, self-driving cars). Despite the high accuracy of convolutional neural networks, they have been found to be susceptible to adversarial noise added to...
Network flows in Real-Time (RT) systems need to meet stringent end-to-end deadlines in order for such systems to operate safely and reliably. Today, such systems use custom or domain specific network system designs to meet end-to-end deadlines and other constraints of real-time flows. In this work we explore the design...
The Accident Tolerant Fuels campaign demonstrated a need for nuclear fuel pin simulators to further research fuel and cladding combinations that can withstand off normal conditions in light water reactors. The use of a heater rod as a fuel pin simulator greatly reduces the risk involved during testing as no...
A simple Janus-type membrane-based wicking microfluidic device fabricated on a polycaprolactone-filled glass microfiber membrane enables separation and collection of blood plasma or serum from whole blood. This device bridges the wicking and cut-capillary-based solution transport mechanisms in a single membrane. The initial portion of the device is fabricated using selective...
Equipment and technology suppliers to the US forest sector are confronting challenges and opportunities to meet the need for disruptive changes in an increasingly complex business environment. Open innovation is crucial for survival and success in the complex and changing operational environment due to its inherent openness and interdisciplinary nature....
The purpose of this study was to evaluate a native remnant forest in Westport, Connecticut. The study site is a fragmented woodland located near a highly urbanized area of roadways and development. Preliminary descriptive information was collected for a partial sampling of tree stands in an attempt to obtain baseline...
The purpose of this study was to evaluate a native remnant forest in Westport, Connecticut. The study site is a fragmented woodland located near a highly urbanized area of roadways and development. Preliminary descriptive information was collected for a partial sampling of tree stands in an attempt to obtain baseline...
This dissertation is organized in accordance to the Manuscript Documentation Dissertation format required by Oregon State University. Chapter 1 provides a general overview of Alzheimer’s disease, defines AD as marginalized population, and explains the relevance and characteristics of qualitative research. Also, Chapter 1 provides an overview of Manuscript 1 (Chapter...
Managers of U. S. Fish and Wildlife Service’s Bald Knob National Wildlife Refuge (Refuge) in central Arkansas want to provide sufficient habitat resources to meet its population objectives for wintering waterfowl. Nutrient reserves acquired during the wintering period appear to support spring migration and subsequent reproductive success for some species,...
The reactivity-initiated accident (RIA) accident has stirred wide interest for the need of designing advanced and high tolerance fuels for next generation nuclear power plants. For pressurized water reactors (PWRs), the accidentally induced reactivity pulse adds transient energy input to the fuel. As a result, boiling may happen locally. Boiling...
Research poster for Summer Undergraduate Research Symposium 2019. Research was conducted with CURE funding in the Perez lab studying cellular senescence in the PS19 mouse model.
This lesson plan is designed to provide leaders in livestock and horse clubs with sufficient resource material on plant identification and evaluation. Leaders may then introduce plant identification and evaluation to members. Through the activities suggested and innovative use of presentations by club members, this lesson plan can broaden activities...
This lesson plan is designed to provide leaders in livestock and horse clubs with sufficient resource material on plant identification and evaluation. Leaders may then introduce plant identificat·ion and evaluation to members. Through the activities suggested and innovative use of presentations by club members, this lesson plan can broaden activities...
Question Answering in natural language processing has achieved significant progress in recent years. Yet, training and testing set methodology to evaluate the language models has proved inadequate. Adversarial examples aid us in finding loopholes inside these models and provide insights into their inner workings. In this work, an evaluation based...
Considering the negative impacts of climate change along with the rapid increase in population in Islamic dominated states, e.g., the Middle East, water tension among upstream and downstream states is increasing. Despite the importance of water in Islamic culture and studies, the role of religion has been under-valued and under-emphasized...
The anadromous Pacific Lamprey (Entosphenus tridentatus) is a biologically and culturally important species native to the North Pacific Ocean and its adjacent freshwater tributaries. Pacific Lamprey have experienced declines in abundance and distribution throughout their native range, highlighting a need for further research on the species to better inform conservation...
Pacific flatheaded borer (PFB), Chrysobothris mali Horn (Coleoptera: Buprestidae), has recently become a serious pest in newly planted European hazelnut, Corylus avellana L. (Betulaceae) in Oregon. Larvae feeding on the inner bark can lead to girdling, loss of transpiration, and ultimately can cause dieback or death of the tree. Although...
This study identifies contemporary research in the field of recreation ecology focusing on ecological impacts of mountain biking and establishing best management practices for sustainable trail development and management.
A site analysis at Boggs Mountain Demonstration State Forest (BMDSF) takes existing knowledge and research on sustainable trail development and applies...
The human intervertebral disc is a deceptively simple structure which plays an essential role in human movement. Even slight changes to the disc microenvironment can have far reaching consequences, particularly when these changes result in disc degeneration and herniation. Degeneration is increasingly tied to lower back pain; better understanding this...
Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
Revised 1991. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
This thesis is an IRB-exempt oral history focused on the non-profit Corvallis Multicultural Literacy Center (CMLC) in Corvallis, Oregon. The CMLC, formerly on 9th Street, was known to many community members as the Yellow House. The Yellow House was a dedicated community-based space where people of all cultures could come...
Haiti is far from achieving the UN goal of sanitation access for all; 20% Haitians have no sanitation access, and less than 0.1% of urban excreta is safely managed. Container-Based Sanitation (CBS) may be a key tool for achieving equitable sanitation coverage in Haiti’s cities. CBS is a sanitation strategy...
As the human population grows, the need for alternative and clean forms of energy is greater. The installation of offshore wind energy has been on the rise over the past decade, however the fossil fuel energy generation sectors, such as coal and natural gas, are still major players in the...
The purpose of this dual-manuscript dissertation is to assess and synthesize the current body of qualitative literature on the topic of the experience of counselor trainees as participants in experiential groups. The first manuscript is presented in Chapter 2. In this study, I performed a directed content analysis on 15...