Collaboration is crucial when advancing in scientific research. One person cannot
study all aspects of a system. That is why it is important for the scientific community to
communicate with each other and stay updated on research being conducted in other labs
around the world. In my research, I was...
Full Text:
LaurenOsborn
Oregon State University
Department of Crop and Soil Science
Mentors: Dr. Patrick M. Hayes
Collaboration is crucial when advancing in scientific research. One person cannot
study all aspects of a system. That is why it is important for the scientific community to
communicate with each other and stay updated on research being conducted in other labs
around the world. In my research, I was...
Full Text:
simple difference. A principal component of winterhardiness is low temperature
tolerance. However, low
Collaboration is crucial when advancing in scientific research. One person cannot
study all aspects of a system. That is why it is important for the scientific community to
communicate with each other and stay updated on research being conducted in other labs
around the world. In my research, I was...
Collaboration is crucial when advancing in scientific research. One person cannot
study all aspects of a system. That is why it is important for the scientific community to
communicate with each other and stay updated on research being conducted in other labs
around the world. In my research, I was...
Full Text:
International Collaborative Research
by
LaurenA. OsbornA PROJECT
submitted to
Pactamycin, a complex aminocyclitol compound produced by Streptomyces pactum, has significant antibiotic, antitumor, and antiplasmodial activity. However, this natural product has not been developed for clinical use due to its high cytotoxicity. Modulation of its biological properties by chemical synthesis has been difficult due to its complex chemical structure. Therefore,...
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Biosynthesis
Andrew Osborn
Research Mentors: Dr. Taifo Mahmud, Dr. Kerry McPhail
A Bioresource
Pactamycin, a complex aminocyclitol compound produced by Streptomyces pactum, has significant antibiotic, antitumor, and antiplasmodial activity. However, this natural product has not been developed for clinical use due to its high cytotoxicity. Modulation of its biological properties by chemical synthesis has been difficult due to its complex chemical structure. Therefore,...
Full Text:
By
Andrew Osborn
An Undergraduate Thesis Submitted to
Oregon State University
Lauren Fath, in her non-fiction collection Half-Life: Essays, examines the underpinnings of her upbringing in suburban Fort Wayne, Indiana, focusing primarily on familial relationships and the importance of hindsight in understanding how our families make an imprint on our lives. By looking at our relationships through the lens offered by...
The Pacific Arctic is undergoing rapid biogeochemical changes in response to warming air temperatures caused by climate forcing. This is manifesting as changes in seasonal sea ice thickness and sea ice extent, as well as changes in primary production within surface waters. The data and samples analyzed here were collected...
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 rainbow trout population in Elder Creek, Oregon was
studied between June 1965 and November 1966. The physical characteristics
of the stream during the summer season were described.
Rainbow trout were captured in each of three sections on the stream
by electrofishing and were tagged and measured. Population size,
mortality,...
A constructed wetland receiving pasture runoff from a dairy in Tillamook, OR was monitored during the winter of 1997-98 in order to estimate coliform treatment efficiency during winter high flow periods. Monitoring occurred during four sampling periods, each lasting 2 to 4 days. Samples were taken every two hours from...
Four to six one-gram specimens separated by a distance of
several inches were obtained from each of 23 large chondritic
meteorites (approximately 1 kg each) representing the olivine bronzite
(H5), olivine hypersthene (L6) and enstatite (E5) classifications.
Each specimen was analyzed for Na and Mn via instrumental neutron
activation analysis...
High-precision instrumental neutron activation analysis has
been used to determine Al, Na, Mn, Sc, Cr, Fe, Co, and Ni in a
suite of more than 500 chondrules from 26 distinct meteorites. These
meteorite specimens represent the H, L, LL and C chemical classes
and most of the petrologic types. In...
Sugar phosphate cyclases (SPCs) are enzymes involved in the biosynthesis of many important natural products. SPCs form a unique cyclitol during the early steps in the biosynthesis of many natural products. These natural products include rifamycin, which is chemically modified to rifampicin and used clinically as an antituberculosis drug, and...
The young larvae of the Douglas-fir tussock moth (Orgyia pseudotsugata (McDunnough) (DFTM) are dependent on the new foliage of its ho'sts (Doug1as-fir, grand fir, white fir) for their food supply. The phenology of the DFTM and its hosts are synchronized, with
egg hatch and dispersal occurring one to three weeks...
Pactamycin, a complex aminocyclitol compound produced by Streptomyces pactum, has significant antibiotic, antitumor, and antiplasmodial activity. However, this natural product has not been developed for clinical use due to its high cytotoxicity. Modulation of its biological properties by chemical synthesis has been difficult due to its complex chemical structure. Therefore,...
The objectives of the study were (1) to determine the differences
in ability of seniors and freshmen to apply principles learned
in a clothing selection course to selection of clothing, (2) to determine
retention of concepts learned in the course, (3) to determine if
age, grades, social class, and occupational...
This bibliography, recording forestry theses produced during 1953-1955, together with a substantial number of additional theses prepared during 1904-1952, is the first supplement to Forestry Theses Accepted by Colleges and Universities in the United States, 1900-1952 published by Oregon State College in 1953. Approximately one-third of the theses here listed...
The goal of the Whole Watershed Restoration Initiative (WWRI) is to restore natural functions of whole watersheds in Oregon, Washington, and Idaho, while amplifying community-based partnerships focused on the strategic restoration of Pacific salmon and steelhead ecosystems. The WWRI partners (Ecotrust, NOAA Restoration Center, the U.S. Forest Service's Pacific Northwest...
Creative nonfiction is a genre replete with contradictions--the name itself shows that: nonfiction writing is true and factual, but creative writing is imaginative and inventive. Because of fundamental contradictions like this, there is no standardized or even most common definition of the genre. This creates confusion for both critics and...
In shared autonomy, a robot and human user both have some level of control in order to achieve a shared goal. Choosing the balance of control given to the user and the robot can be a challenging problem since different users have different preferences and vary in skill levels when...
Although it is widely accepted that dogs and humans form attachment relationships, characterizing attachment styles in dogs has only recently received attention in the literature. Previous research has shown that pet dogs display patterns of behavior in an attachment test that can be classified into secure and insecure attachment styles,...
The development of problem-solving behaviors in canines, including persistence, has implications for canine training, welfare, and the human-dog bond. Past research has shown that a variety of factors, including genetics (domestication) and training experience, play a role in a how a canine might behave during a problem-solving task. Less well...
The present study explored the effects of intranasal oxytocin (OT), a naturally occurring hormone, on the behavior of pet dogs in an attachment test. Each dog participated in two testing sessions. On one visit saline was administered nasally and on another OT was administered nasally. Condition order was counterbalanced. Following...
The domestic dog is one of the most popular pets in the world, and many pet owners consider their pets to be members of their family. Studies have suggested that dogs behave like pseudo-children in many contexts. Despite this, there is very little research on how dog owners may behave...
Human exposure to the carcinogenic polycyclic aromatic hydrocarbons (PAHs) benzo[a]pyrene (B[a]P) and dibenzo[a,l]pyrene (DB[a,l]P) is through environmental complex mixtures, such as urban dust particulate matter (UDPM) and diesel exhaust (DE), however the potency of these PAH within a mixture is not established. To determine the effect of these mixtures on...
The objective of this research is to design a portable neutron detector that is lightweight and responds to neutrons with energies of 20 MeV and greater. The instrument will be used as a ‘sniffer’ probe for identifying shielding weaknesses at high-energy particle accelerators and be paired with a plastic scintillator...
Projected to reach one million people next year, international students in the United States are undergoing a transformative educational migration. Moving away from the existing study abroad paradigm is the first step to more accurately understand the lived experience of an educational migrant. Discovering the perceptions of what value an...
The structure of food webs and how they relate to community stability has been an important debate in ecology. Specifically, predictability of web shape and how it influenced by surrounding landscapes is one of the main goals of such discussions. Headwater streams provide a study template that is of interest...
Nanoparticles (NPs), defined by their size (1-100 nm), are increasingly incorporated into commercial and industrial products due to their high surface area and unique properties. They can be designed for specific applications by manipulating composition, size, shape, and surface functionalization. As NP production and complexity increases, there is a need...
It has been demonstrated that dogs form attachment bonds to their owners and that these attachments can be classified and described in ways that are analogous to attachments found between human infants and their mothers. While a secure attachment to a parent has been shown to improve problem-solving abilities in...
The aim of this study was to evaluate the different attachment profiles that characterize shelter dog-shelter volunteer and foster dog-foster volunteer relationships and to assess the proportion of insecure and secure attachment styles within foster, shelter, and pet dog populations. Foster dog-foster volunteer, shelter dog-shelter volunteer, and pet dog-owner pairs...
Nonindustrial private forest (NIPF) owners control a significant portion of forestland nationwide. Even though women own or manage NIPF lands, we know very little about how women manage forestland and what barriers women face in forest management. In addition, while there are several forestry organizations available to NIPF owners, few...
For adult learners to succeed in their educational endeavors, adult educators and event planners must meet their needs and goals (Storksdieck, Ellenbogen, & Heimlich, 2005). The learning environment affects how adults learn and what outcomes they achieve (e.g., Hamilton & Tee, 2010; Knowles, 1990; Lim, Morris, & Kupritz, 2007; Young,...
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...
Non-timber forest products (NTFPs) are an important aspect of the forest that has often been overlooked. NTFPs have been especially important to Native American people because of their subsistence, cultural, and economic values. As a result of their economic value, there have been an increased number of people harvesting NTFPs...
Exertional rhabdomyolysis (ER), or the occurrence of muscle damage with exercise, is prevalent among Arabian horses, the most common breed participating in endurance racing. The cause and pathogenesis of this disease has yet to be determined, and due to the potential for significant morbidity and even mortality associated with ER...
Many pollinators across the globe are experiencing population threats and declines (Potts et al. 2010). Approximately 85 percent of the world’s flowering plants depend on animals, mostly insects, for pollination (Ollerton et al. 2011). As over 80 percent of the United States population lives in cities (U.S. Census Bureau 2016),...
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...
Oregon is one of several states to implement a new and innovative minimum wage policy. The Oregon policy defines three regions with each having a separate initial minimum wage and a different set of incremental increases over the next seven years. This paper explores how this policy change may impact...
Ophthalmic plaque brachytherapy is a form of internal radiation treatment for uveal melanoma, the most common eye cancer in adults. During treatment, a plaque containing radioactive seeds is surgically attached to the sclera, directly adjacent to the ocular tumor site. Plaque Simulator™ is an eye plaque brachytherapy planning software that...
Up to 99.9% of native North American grasslands have been degraded since European settlement, primarily due to agricultural conversion. Today, grasslands are a top priority for restoration as they provide essential habitat for many rare and endangered species; however, the majority of studies in grasslands have focused on vegetation or...
In 2008 the U.S. Geological Survey began a Global Change study that evaluated the watershed scale response to climate change in selected basins across the United States. Fourteen basins for which the Precipitation Runoff Modeling System (PRMS) had been calibrated and evaluated were selected as study sites. PRMS is a...
This thesis examined the identity transitions that occurred prior to enrollment at a predominantly, White, large, public research university and after completing at least one year of college for students who identify as multiracial. As a secondary purpose, this thesis also examined whether these students sought support through groups that...
Throughout history, there have been many examples of political figures who have influenced fashion: from Theodore Roosevelt to Jacqueline Kennedy to Michelle Obama. Companies have taken advantage of the influence that political figures have as fashion opinion leaders, even going so far as to purchase keywords such as "Michelle Obama"...
Ninety-two physicians from six different medical specialty
areas were participants in an opinion survey concerning corporate
executive fitness. The survey was comprised of 21 statements
related to such areas as fitness, nutrition, implementation
of specific programs and cost effectiveness. Descriptive
research methods were utilized to analyze results.
Physicians surveyed were...
Community forestry is a decentralized form of forest governance that is widely promoted around the world. In the United States, community forestry is growing as a form of forest management, and exists across a range of ownership and governance models, all with different levels of community participation and access to...
The specific activity of ⁶⁵Zn (nanocuries ⁶⁵Zn/g total Zn)
was determined in various organs of the common coastal mussel,
Mytilus californianus Conrad, collected from six locations along
the Pacific Coast. These organs included the gills, mantle, foot,
reproductive organs, adductor muscle, and viscera. After ashing
and dissolving with nitric acid...
In the days following Oct. 5, 2007, the staff of The Daily Barometer - the student newspaper at Oregon State University - was left scrambling for understanding. The paper published a image of a man wearing black face paint for an event called "Blackout Reser." That black face paint looked...
In the Pacific Northwest, USA, the cumulative impact of human development has caused decades of salmon habitat degradation and the listing of multiple populations under the US Endangered Species Act. As a result, the need for implementation of recovery goals has encouraged the development of an economy focused on salmon...
We are constantly updating our research in the growing field of Environmental Health, yet we do not always translate this information in a way which is understood by the general public. This has resulted in tools which gauge the public’s understanding of health information, such as the eHEALS tool. This...
Background: Body Mass Index (BMI) is used as a quick and inexpensive tool to measure populations at risk for a number of metabolic and chronic conditions. In part due to its simplicity, BMI has been criticized for its inaccurate prediction concerning health outcomes. Due to the diversity in the United...
Harney County contains defining characteristics of regions containing arsenic within the groundwater such as its location in the western United States, unique closed basin geography, complex geology, and seasonal groundwater level fluctuations. Confirmation of arsenic concentrations above the Maximum Contaminant Level Drinking Water Standard of 10 μg/L has been observed...
In ponderosa pine (Pinus ponderosa) forests of the western United States, prescribed fires are used to reduce fuel loads and restore historical fire regimes. The season in which prescribed burns are performed and the interval between burns can have complex consequences for the ecosystem, including soil carbon cycling through the...
High counts of fecal indicators, used to signal the potential presence of pathogens associated with untreated waste, result in the classification of water bodies throughout the United States as impaired. Nonpoint sources of unknown origin that contribute to fecal contamination make management of impaired waters challenging, as they are difficult...
Freshwater resources are becoming more and more scarce worldwide, and rights to water use is becoming more competitive between stakeholders. Irrigation for agricultural purposes accounts for a large portion of freshwater usage. Using drought tolerant plant species in irrigated pastures could become a necessity in order to reduce competition for...
This thesis is a study of the changes in the cultural definition of the American Dream. I have chosen to use Superman comics, from 1938 to the present day, as litmus tests for how we have societally interpreted our ideas of “success” and the “American Way.” This work is primarily...
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....
Bicycle commuting is increasing in popularity due to exercise benefits, cost savings, and environmental concerns. Available specialized cycling apparel does not reflect the aesthetic and expressive needs of the bicycle commuter. Urban bicycle commuters need clothing that allows them to bicycle safely and effectively while maintaining their identity as professionals....
To face large scale environmental challenges like climate change, the Obama administration has turned to renewable sources of energy to offset the carbon emissions that result from traditional energy sources like coal and natural gas. However, finding suitable locations for large-scale renewable energy developments has proven difficult due to strong...
Polyoxometalates are a rapidly growing class of discrete metal oxide clusters with a wide range of applications including functional materials. These anionic clusters of the group V and VI transition metals are inexpensive and non-toxic. Within group V polyoxometalates, niobium and tantalum chemistry has been underdeveloped owing to their unique...
Zebrafish (Danio rerio) are one of the most commonly used animal models in biomedical research. Zebrafish resource facilities, like the Zebrafish International Resource Center (ZIRC) in Eugene, Oregon, are the main providers and keepers of numerous zebrafish wild-type, mutant, and transgenic lines. Although ZIRC maintains live zebrafish at various life...
The Pantanal is one of the largest wetlands in the world, covering 195,000 km2 across Brazil, Bolivia and Paraguay. It has a unique annual flooding regime with the majority of land being completely inundated during the wet season, which provides important habitat for threatened species such as jaguars (Panthera onca)...
Sound is a crucial aspect of the underwater environment for fishes – various species use sound to communicate, identify predators, navigate, and many other activities needed for survival in their habitat. Disruptions and disturbances in the natural soundscape can have important impacts on all these activities and are likely to...
As tail docking bans are sweeping Europe, Australia, and South Africa, the United States is facing increased scrutiny on whether or not the procedure should be permitted. Many European countries are reestablishing breed standards to allow dogs of natural composition to be shown, unlike most major U.S. shows. The American...
The Oregon Coast's small water systems, like the vast number of small water systems across the U.S., are greatly vulnerable. Failing infrastructure, limited financial capital, and inadequate staff combined with future changes in climate, population size, and regulatory stringency spell out a potentially dire future for the region's water supply...
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Small
Water
Systems
Lauren
M.
Dennis
M.S.
Candidate,
WRPM
Oregon
The Oregon Coast's small water systems, like the vast number of small water systems across the U.S., are greatly vulnerable. Failing infrastructure, limited financial capital, and inadequate staff combined with future changes in climate, population size, and regulatory stringency spell out a potentially dire future for the region's water supply...
Full Text:
Water Systems
by
Lauren Marie Dennis
A THESIS
submitted to
Oregon State University
in
Five solvents were used to resolubilize the fungal pigments of Chlorociboria aeruginosa and Scytalidium cuboideum, two common fungi used in the spalting of wood pieces. These solvents were tested as a replacement for dichloromethane in the pigment application process, via analysis of their ability to increase internal color coverage inside...
The Oregon Coast's small water systems, like the vast number of small water systems across the U.S., are greatly vulnerable. Failing infrastructure, limited financial capital, and inadequate staff combined with future changes in climate, population size, and regulatory stringency spell out a potentially dire future for the region's water supply...
During the first decades of the twentieth century different attempts were made to unify the diversifying and specializing sciences. One of these attempts manifested as the History of Science. Established in 1913 with the academic journal Isis, its first article written by George Sarton clarified that the field was created...
Recent studies in men have shown plasma levels of vitamin B-6
and pyridoxal 5'-phosphate (PLP), the active form of vitamin B-6, to
increase with exercise. It was hypothesized that muscle glycogen
phosphorylase might be the source of these increases as this enzyme
has been shown to increase with increasing vitamin...
Water is one of the world’s most valued commodities, and antibiotic-resistant bacteria are one of the emerging pollutants of concern. Stormwater runoff picks up pollutants such as bacteria as it runs over impervious surfaces and into waterbodies. This project tested the use of biochar columns as an effective and inexpensive...
This study examines different fate and transport processes of N and P based on uncultivated grass, contour crop, and livestock management across different topographies (i.e. 5% vs. 30% slope) found within the tropical mountains of volcanic pedogenesis in the Ambato river catchment. The hydrologic, cultural, and agricultural properties of the...
Title IX has increased opportunities for women academically and athletically. This research assessed the impact that Title IX has had in the Pac-12 Conference in the development of women’s intercollegiate athletics within the male-dominated world of sports and how female and male athletes have been impacted by Title IX implementation....
In November of 2006 an intense rainstorm of tropical origin, known colloquially as the "Pineapple Express," inundated the Pacific Northwest region of the United States, initiating numerous periglacial debris flows on several of the
stratovolcanoes in the Cascade Range of Oregon and Washington. These debris flows rapidly aggrade channels, deposit...
Foresters care about site productivity and stem quality in Douglas-fir plantations for many reasons. The profitability of forest land and the economic returns on silvicultural investments are directly related to site productivity. Thus, understanding the relationships among Douglas-fir productivity, stem form and site characteristics is important economically. My objective was...
Cobalamin (vitamin B12) is a water-soluble vitamin that plays a role as an indicator of gastrointestinal disease in dogs. In addition, supplementation of vitamin B12 to dogs deficient in cobalamin has been shown to improve clinical signs of intestinal disease.1,2 Low serum cobalamin has been found in dogs with food-responsive,...
This literature review aims to discuss the safety and use of cannabidiol (CBD) products for dogs and cats. The most prominent issue with CBD products for pets is the limited amount of resources and information available to the veterinary community. Another consideration for the control of CBD on the market...
Over 100 years separate the 1918 Influenza and COVID-19 pandemics, and a multitude of science, public health and communication advancements have emerged. With the COVID-19 pandemic still underway, recently reaching the one million death mark in the United States alone (CDC, 2020), researchers are searching for clues as to how...
The purpose of this paper is to understand the role of policy diffusion in the policy development process of state healthy soil policies. Within the last decade state legislation on soil health has increased exponentially. In general, these policies are efforts by state governments to mitigate or adapt to climate...
Early life stages of marine fishes exert substantial control on the productivity and resilience of marine fisheries, as these life stages represent periods of extreme mortality. Additionally, eggs and larvae of marine fishes respond rapidly to environmental change and can thus be used to infer ecosystem-wide responses to climate change...
The ability of nanoparticles (NPs) to induce oxidative stress on organisms has been linked to NP cytotoxicity and genotoxicity for a variety of organisms. One proposed mechanism of this increased oxidative stress is the ability of NPs to generate reactive oxygen species (ROS). Due to the dynamic nature and small...
A series of profiles of velocity microstructure along 152°E in the western North Pacific Ocean were collected in May–June 1982. Large, averaged turbulent dissipation rates, ϵ, found in the main thermocline (400 to 1000 m) were determined by a combination of large independent estimates of ϵ and a greater rate...
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...
The Remember Center (TRC) is a long term care center for previously trafficked children. In Ghana, there is a huge child trafficking problem because of the impoverished state the country is in and the lack of involvement from the government. With the fishing industry depleting because Lake Volta is running...
Olive ridley sea turtles (Lepidochelys olivacea) present an interesting case study of the conservation of wildlife species that aggregate in high densities and have served as resources for human consumption. Ridleys exhibit synchronized mass-nesting behavior,
during events called "arribadas," where thousands of females lay eggs together in a small area...
Foodborne illness in the United States continues to be a complex and recurring issue despite our increased understanding of the pathogenic microorganisms responsible. Foodborne illness outbreaks and product recalls linked to pathogenic bacteria have been more frequent in the produce industry (e.g. fruits and vegetables) in the last ten years....
Chlamydia abortus, an intracellular bacterium, spreads through flocks of sheep and goats, causing ovine enzootic abortion (OAE). Chlamydiae develop within a pathogen-modified vacuole in the host cell called the inclusion, which allows the bacteria to acquire host resources. The morphology of the inclusion varies between chlamydial species. Some species fuse...