The Mount St. Helens eruption of May 18, 1980, offered an
excellent setting for evaluating early response of ecosystems to
disturbance. Prior to the eruption, the area was densely forested
with fir, hemlock, and Douglas-fir, and various understory species.
During the course of the eruption, hillslopes within a 180 degree...
The purpose of this phenomenological study was to discover the experiences nurse educators (NEs) have had with oppression and to uncover how their experiences may have impacted their teaching. This study was significant as nurse retention is negatively affected by oppressed group behaviors (Duchscher & Myrick, 2008; Tinsley & France,...
Mixtures of 1,4-dioxane (1,4-D) and chlorinated aliphatic hydrocarbons (CAHs) are common and hazardous groundwater contaminants that can be challenging to address with traditional remediation strategies. Bioremediation through aerobic cometabolism has the potential to be an effective in-situ treatment strategy for these contaminants. Rhodococcus rhodochrous strain ATCC 21198 is capable of...
The global mid-ocean ridge system is the largest magmatic system encompassing over 75% of the Earth’s total volcanism. As magmas ascend through the vertically variable oceanic crust, melts begin to crystallize and diversify and subsequently erupt at the surface. The interpretation of these erupted products observed on the seafloor requires...
Butane-grown Pseudomonas butanovora oxidized butane by a soluble butane monooxygenase through the terminal pathway yielding 1 -butanol as the predominant product. Alcohol dehydrogenases (ADHs) involved in butane oxidation in P. butanovora were purified and characterized at the biochemical, genetic and physiological levels. Butane-grown P. butanovora expressed a type I soluble...
The Mw7.5 Palu-Donggala earthquake occurred on 28 September 2018 at 6:02 PM local time, and was caused by strike-slip faulting along the north-south trending Palu-Koro fault that extends through Palu City and the Central Sulawesi region of Indonesia. The United States Geological Survey (USGS) reports the epicenter was approximately 72...
Auxin and ethylene regulate many important aspects of plant growth and development and are
essential to the plants survival. They help regulate such diverse processes as cell elongation,
growth of adventitious roots, fruit growth, germination, and a variety of other processes. Few
studies have examined how the hormones auxin and...
This project explored one set of tools and procedures that
appeared to have the potential to make the handling of the spatial
data necessary for resource management more efficient and
effective. This project used data from the Nature Conservancy's
Lawrence Memorial Grassland Preserve and was designed to explore
a low...
The West Eugene Wetlands, Eugene, Oregon, which provide habitat for number of endemic and endangered plant species, are currently threatened by a Reed canarygrass (Phalaris arundinacea L.) invasion. This study addresses the hypothesis that Phalaris spread can be explained in part by using watershed-scale landuse patterns as surrogates of the...
Proteinase P-II purified from parasitized Pacific whiting muscle was previously
identified to be one form of cathepsin L. It appeared to be present in three isozymatic
forms on non-denaturing PAGE gel stained for activity. Its autolytic degradation was
observed on SDS-PAGE gel under its optimum condition, 55°C and pH 5.5,...
This study was an investigation of lotic macroinvertebrate distribution in northeastern Oregon at two different spatial and biological scales. Examination of assemblages at a limited spatial scale revealed relationships with natural and disturbance gradients and led to questions about distribution of a population at broader spatial scales. In a 16...
Plant hormones regulate progression through the different phases of plant development in response to endogenous and environmental cues. Gene expression studies, as well as genetic and molecular analysis of mutants with altered hormonal responses, are two common approaches to elucidate hormone response pathways. This dissertation compares ovary and fruit development...
The auxin-resistant diageotropica (dgt) mutant of tomato (Lycopersicon esculentum Mill.) has a pleiotropic phenotype including a lack of lateral roots and reduced gravitropic response, apical dominance, vascular development, and fruit growth. The dgt mutation reduces the auxin sensitivity of only a subset of auxin responses while levels, metabolism, and transport...
The 180,000 km² of Arabian lava fields (“harrats” in Arabic) form one of the largest distributed basaltic provinces in the world. Approximately 50% of these are located in Saudi Arabia. The most recent eruption in 1256 AD, as well as seismicity and ground deformation associated with shallow dike emplacement in...
Renibacterium salmoninarum produces bacterial kidney
disease (BKD) in salmonid fish. Soluble antigen(s) (SA) produced
by the bacterium was characterized by physicochemical,
functional and immunological methods. The molecular weight
determination by SDS-PAGE analysis of SA yielded 14 different
molecular weight species. Seven of these species were
prominent, 57 kd protein being...
Two approaches to reduce computational requirements for solving reactive
distillation problems have been studied: simplification of the model using physical
assumptions and numerical approximation using an orthogonal collocation technique.
The results of a full-order model with time dependent stage molar holdups was
compared to published steady-state experimental data and was...
The temperature-time-location relationships during steam conditioning and pressure
treatment of timber poles have been studied and mathematical models that take into
account both the thermal properties of the poles and the parameters of the treatment
process have been developed. Although much work has been previously done in this
area, the...
A web-based survey was conducted to investigate the relationships between adopters and the dogs they adopted from three types of rescue groups/organizations: humane societies, greyhound rescues, and pit bull rescues. The dog selected to adopt can vary for many reasons, one of which is breed preference. This study found dog...
Little is known about the virulence factors of Renibacterium
salmoninarum, the causative agent of salmonid bacterial kidney disease.
The predominant protein produced by R. salmoninarum in broth culture or
during infection is a 57/58 kDa protein (p57) which is associated with strain
virulence. In this study monoclonal antibodies (MAbs) to...
Metagenomics has revealed that the marine microbial biosphere is immensely more diverse than originally considered, and is an almost untapped reservoir for the potential discovery of microbial natural products. Despite numerous advances in culturing, biosynthetic engineering and genomic-based screening efforts to uncover much of this diversity in relatively accessible environments,...
Since the 1890s, American federalism has been perceived as being unique in the world by having two different levels of government operating within the same jurisdiction without influencing one another. Modern scholars call into question the validity of this basic assumption, but few have published quantitative evidence to reject its...
Native populations of forest trees are specifically adapted to the climates they inhabit. The farther trees are moved from their local climates (i.e., as the climatic transfer distance increases), the more growth and survival tend to decrease. The transfer limit is the climatic transfer distance beyond which plantation performance is...
This study explores the use of predictive mapping techniques in developing Landtype Association (LTA) maps for use in natural resource management. These maps are produced for the USDA Forest Service on a regional basis at a 1:100,000 scale. The goal of this study is to develop and test a method...
The Pacific Northwest region of the United States is known for quality production of blueberries, blackberries, and red raspberries. However, as the climate shifts to warmer, drier, and more extreme summers, growing these water intensive berry crops is becoming increasingly difficult. Furthermore, water regulations within agriculture are becoming more prevalent...
In this thesis I argue that Alice Munro’s work takes part in an ongoing feminist discourse that examines alterations in male and female gender relations, as they have been represented in domestic fiction by women writers since the late nineteenth century. I analyze two short stories written by Munro: “Meneseteung,”...
A major factor in the ability of Pseudomonas fluorescens Pf-5 to act as a biological control agent is its production of antibiotics, including pyoluteorin (PLT), 2,4-diacetylphloroglucinol (2,4-DAPG) and pyrrolnitrin (PRN). The data provided in this thesis demonstrate that the presence of any of these antibiotics in the extracellular milieu affects...
Knowledge of regional-scale patterns of plant community structure and controlling factors is largely qualitative and based on numerous local studies. Data from a subsample of 10,000 field plots were used to quantify and map compositional gradients of woody plant communities across Oregon forests. Canonical correspondence analyses explained 9-14% of the...
The nursing profession has long sought more diversity in registered nurses (RNs) to reflect the populations served. One way to enhance RN diversity is through diversity in community college (CC) associate degree in nursing (ADN) programs.
Since ADN programs lead to professional employment with middle-class wages, they form an important...
The heroine of this fantasy novel is Alina who lives in a medieval-like time and place. The day before her 20th birthday, in an impetuous moment, she breaks a local superstition by standing in a sunbeam. This allows a fairy to kidnap her and take her to the fairy castle...
Diversity literary awards and other sources were used to create a list of high-quality titles written by and about underrepresented groups. This list was used to assess the diversity and inclusiveness of the library collections of a land-grant university. Gaps in the collection and acquisition processes were identified and will...
During the eighteenth century, diagrams increasingly became an important aspect of scientific inquiry. Diagrams employed simplification as a strategy for representing complex information, played a role in standardizing scientific language, and served as instruments of reason to think through and communicate problems and findings in mathematics, physics, chemistry, astronomy, natural...
Landscape positions have been used to determine soil properties. My soil study in Monteverde on the Pacific slope of Costa Rica was designed to examine soil-landscape relationships for sites with various land use histories and management. Soil pits were dug at Nacimiento y Vida, Crandell, Curi-cancha, La Calandria, and Finca...
In this dissertation I study evolutionary patterns at genes encoding antimicrobial peptides (AMPs) in frogs. AMPs are short, amphipathic, cationic, secreted proteins that kill bacteria and other pathogens through a non-catalytic mechanism that involves
binding to and disrupting the microbial cell membrane. In many animal taxa, positive selection is much...
This thesis aims to determine the impact that Augmentative and Alternative Communication (AAC) devices have on social interactions, and then improves the AAC user experience through a user focus design process. AAC devices enable people who cannot speak to communicate with others. Unfortunately, they are tedious to use and make...
What is the foggiest place on the Pacific Coast?
Where is the "grass seed capital of the world"?
What is the fastest-growing minority population in the Northwest?
What percentage of Idaho's population hold fishing licenses?
Northwest natives and newcomers can turn to the Atlas of the Pacific Northwest for answers...
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Philip L. Jackson
Cultural-Histe>rical Gee>graphy ••••••••••••••••••••••••• 10
Robert Kuhlken
SUMMARY - REASONS FOR PERFORMING STUDY: Exertional rhabdomyolysis (ER) is a reported syndrome in competing endurance horses; however the prevalence and cause of ER in this population has not been defined.
OBJECTIVES: To determine the prevalence of ER in a sample of endurance racing horses, and to investigate factors, including...
In this watershed assessment, the authors of the report summarized current conditions and data gaps within the Necanicum River watershed to help to identify how current and past resource management is impacting aquatic resources.
1,4-Dioxane (dioxane) and cis-dichloroethylene (cDCE) are compounds commonly found in industrial cleaning and degreasing agents that are frequently present as groundwater contaminants. In an effort to develop a more effective treatment method for these compounds, hydrogel beads were fabricated with either gellan gum or a combination of polyvinyl alcohol (PVA)...
Alaska encompasses several climate types because of its vast size, high-latitude location, proximity to oceans, and complex topography. There is a great need to understand how climate varies regionally for climatic research and forecasting applications. Although climate-type zones have been established for Alaska on the basis of seasonal climatological mean...
Chlorinated solvents are a class of widespread groundwater contaminants that are toxic, carcinogenic, and difficult to remediate at low concentrations. 1,4-dioxane, a suspected carcinogen, is often a co-contaminant found in mixtures of chlorinated solvent plumes. In-situ bioremediation methods of degrading these chemicals through aerobic cometabolism have shown promise. Permeable Reactive...
Ecological regionalization is a form of spatial
classification, where boundaries are drawn around areas
relatively homogeneous in landscape characteristics. In the
delineation of ecological regions, or ecoregions, the process
includes the analysis of ecosystem structure and function.
Ecoregions have been developed at national and state scales
for research and resource...
The West Antarctic Ice Sheet Divide (WAIS Divide, WD) ice core is a newly drilled, high-accumulation
deep ice core that provides Antarctic climate records of
the past ~68 ka at unprecedented temporal resolution. The
upper 2850 m (back to 31.2 ka BP) have been dated using
annual-layer counting. Here we...
Consistent with its charge under Oregon House Bill 3543, the Oregon Climate Change Research Institute (OCCRI) conducts a biennial assessment of the state of climate change science, including biological, physical, and social science, as it relates to Oregon and the likely effects of climate change on Oregon. This sixth Oregon...
Satellite imagery has become an efficient and time effective tool that
may aid in the development of regional terrestrial and aquatic resource management
schemes. A methodology utilizing National Oceanic and Atmospheric
Administration (NOAA) Advanced Very High Resolution Radiometer (AVHRR)
imagery, 1.1 kilometer spatial resolution at nadir, was developed for delineating...
The effect of carbon source, nitrogen source, and amino acid
starvation on the accumulation of guanosine tetraphosphate.and RNAand
protein synthesis in Rhizobium meliloti are described in this report.
An accumulation of ppGpp and a decrease in the rate of RNA and
protein synthesis were observed in response to nitrogen source...
While many geographers believe that the regional
concept is central to geographic study, no definitive regional
scheme exists. The criteria considered in each regional study
will relate to a stated objective or study. Ecological
regionalization is a major contribution by geographers to
environmental studies. By examining spatial patterns of factors...
Hop (Humulus lupulus L. var. lupulus) is a diploid, dioecious plant with an extensive history of cultivation and use in brewing, as a textile, and for its therapeutic properties. Hop is prized for its ability to produce a variety of aromatic and flavor compounds, as well as compounds with anti-microbial...
An Expert Panel convened by the National Lipid Association previously developed a consensus set of recommendations for the patient-centered management of dyslipidemia in clinical medicine (part 1). These were guided by the principle that reducing elevated levels of atherogenic cholesterol (non–high-density lipoprotein cholesterol and low-density lipoprotein cholesterol) reduces the risk...
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,
James M. McKenney, PharmD, Joyce L. Ross, MSN, CRNP, Lynne T. Braun, PhD, CNP,
Matthew K. Ito, PharmD
Optimization of preparative nonlinear chromatography was carried out for
the first time for a biomolecule mixture. Conventional wisdom on optimization,
which roots from analytical chromatography, dictates optimizing resolution in an
analytical column and obtaining similar separation in a large column for isolation.
Such a method of optimization significantly under uses...
Chlorinated solvents are common groundwater pollutants that often exist as mixtures resulting from the use of multiple solvents and their transformation into chlorinated daughter products. These sites are often co-contaminated with the solvent stabilizer 1,4-dioxane (1,4-D), which is not treated by traditional chlorinated solvent remediation techniques. Both 1,4-D and chlorinated...
For university students, academic misconduct policies are designed to promote learning and protect the university’s reputation. Misconduct consequences can impact students’ grades, finances, and even visa status. While elements of such policies are similar across institutions, there are uneven reporting patterns within institutions, leaving some students more vulnerable to these...
Point Reyes is a 100-square mile peninsula located on the California coast about 30 miles north of San Francisco. The peninsula, surrounding bays, and neighboring coastal mainland are a unique biodiversity hotspot. The area underwent heavy human use, including ranching and logging, during the late 1800s and early 1900s. Conservation...
The cometabolic ability of Burkholderia vietnamiensis G4 grown on aromatic substrates was first assessed by resting suspended cells, and subsequently for cells encapsulated with and without slow release compounds (SRCs). In Chapter 3, benzyl alcohol was assessed as a food-grade growth substrate for promoting cometabolism of trichloroethene (TCE), via the...
Student engagement has been the focus of much engineering education research, in large part due to its ties to student learning. Widely considered to be a meta-construct, student engagement is often broken down into behavioral, emotional, and cognitive components. Reasons for ongoing research on student cognitive engagement are twofold: educators...
This thesis focuses on performances of masculinity by British Royal Flying Corps (RFC) airmen in the charged landscape of the First World War prisoner of war (POW) camp. I examine how captive airmen coped with imprisonment by reasserting the familiar homosocial communities of pre-capture squadron life, particularly through practices associated...
"This report is organized as follows. First, the
objectives and methods used are outlined. Background
information follows, including what is known about the
extent, past alterations, and condition of wetlands in
Oregon today; the status of wetland restoration in the U.S.
and in Oregon; definitions of important terms; the functions...
The starvation-survival patterns of 16 freshly isolated open
ocean bacteria and in a psychrophilic Vibrio sp., Ant-300, were
determined. These isolates displayed three survival patterns as
determined by viable cell count. These were (a) a rapid increase
followed by a decrease to a constant value (pattern of Ant-300 and
7...
Quaking aspen (Populus tremuloides) sustainability is a topic of intense interest in forest ecology.
Reports range from declines to persisting or increasing coverage in some areas. Moreover, there is little
agreement on ultimate factors driving changes. Low aspen recruitment has been attributed to climate
patterns, past management, herbivore increases, competitive...
During early development, oviparous fish species must use finite lipid and fatty acid (FA) reserves for both catabolism and structural components. In cold environments, developing fish have the additional constraint of maintaining membrane fluidity for metabolic efficiency (homeoviscous adaptation), resulting in further demand on lower melting point FAs like n-3...
Dams, culverts, and water intake structures can impact the movement of aquatic and semi-aquatic species within streams and rivers. Datagaps exist regarding the impact of water intake structures on larval coastal giant salamanders (Dicamptodon tenebrosus) as these obstructions may produce a barrier to up and downstream movement. The Rock Creek...
The workshop was funded by the National Science Foundation (NSF), OCE Division of Ocean Sciences (Award # 1817257). This report summarizes the key findings, outcomes, and recommendations of the workshop and serves as a draft of the comprehensive roadmap.
The primary goal of this research was to identify the impacts that individual agricultural land uses have on fish communities in small streams located in the Willamette Valley of western Oregon. The diverse nature of the land use features of the valley provided a challenging but useful system for the...
A significant challenge for energy storage technologies is to realize battery-level energy density and capacitor-level durability and
power density in one device. By introducing an electrolyte composed of an anionic catholyte and a cationic anolyte into a symmetric
carbon-based supercapacitor configuration, a hybrid electrochemical battery-supercapacitor system using soluble redox species...
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, D. Xiong, and J. R. Dahn, J. Electrochem. Soc., 158, A1136
(2011).
7. A. J. Bard and L. R. Faulkner
Selected tree height and diameter functions were evaluated for their predictive abilities for major tree species of southwest Oregon. Two sets of equations were evaluated. The first set included four base equations for estimating height as a function of individual tree diameter, and the remaining 16 equations enhanced the four...
High resolution land use/land cover information from
stream riparian areas is useful in understanding instream
biotic assemblages, and is often not available for
geographical research. A classification system was developed
which provides the types of information about the riparian
buffer thought to be important in providing good habitat for,
or...
Riparian areas contribute to numerous ecological-maintenance functions and so are
often the focus of protection efforts by land and resource management agencies. The riparian
land-use regulations of one jurisdiction, Lane County, Oregon, are assessed for effectiveness in
protecting ecological functions. Evaluation of the current condition of five elements of riparian...
The spatial distribution of forest disturbance is commonly calculated using a satellite imagery-driven bi- or tri-temporal change analysis. Working in Colombia’s Cordillera de los Picachos National Natural Park – a region of consistent cloud cover and dramatic topographic relief – a change assessment with such infrequent observations cannot capture long-term...
Invasive plants have the capacity to transform landscapes and alter ecosystem function, causing significant economic and ecological damage. These effects include displacement and reduction of native flora and fauna, altered fire regimes, modification of biotic and abiotic soil properties, as well as local, regional, and global economic impacts. With such...
The relationship of temperature and salinity to protein synthesis
was determined for cells of Vibrio marinus, MP-1. Protein synthesis
was measured by the incorporation of radioactive proline into
hot trichloroacetic acid precipitable material. At all salinities protein
synthesis occurred at 15°C and 20°C but not at 25°C. The critical
temperature...
Hypothesis tests are developed for the exertion of
market power by the Japanese government in the world and
domestic wheat markets. The results indicate that the
Japanese government is pursuing a more restrictive import
policy for wheat than would be indicated by an optimal
tariff strategy. Results also indicate that...
Biological and physical limitations require that DNA be sequenced in fragments. There are several approaches to obtain the appropriate sized fragments of DNA to sequence. The method of sequencing that we are interested in is loosely referred to as shotgun sequencing. Many copies of the genomic DNA to be sequenced...
We investigated the potential use of airborne light detection and ranging (LiDAR) data to predict key wood fiber properties from extrinsic indicators in lodgepole pine leading forest stands located in the foothills of central Alberta, Canada. Six wood fiber attributes (wood density, cell perimeter, cell coarseness, mature fiber length, microfibril...
Landforms are natural features on the Earth’s surface that both reflect and shape geophysical and ecological process. The result is a defining part of landscapes that so often impact on human perception and interactions with environment. Blascyznki (1997) defines landforms as, “specific geomorphic features on the surface of the Earth,...
Relief shading is the most common type of cartographic relief representation for print and digital maps. Manual relief shading results in informative and visually pleasing representations of terrain, but it is time consuming and expensive to produce. Current analytical relief shading can be created quickly, but the resulting maps are...
The National Women's Health Information Center reports that domestic violence is the leading cause of injury to American women and that nearly one-third of American women have been physically assaulted by their significant other at some point in their lives. These women often experience depression, low self-esteem, anxiety, posttraumatic stress...
n Oregon’s Willamette Valley, remaining wetlands are at high risk to loss and degradation from agricultural activity and urbanization. With an increased need for fine temporal-scale monitoring of sensitive wetlands, we used annual Landsat MSS and TM/ETM+ images from 1972 to 2012 to manually interpret loss, gain, and type conversion...
The social aspects of older adults lives are strongly linked to well-being outcomes. Social relationships in older adulthood are rewarding, but also complex, and to maintain a positive social environment, older adults must reconcile long relationships histories, negotiate changing roles, and deal with increasing dependencies. Older adults are known to...
Despite holding substantial ecological value, wetlands in the United States have experienced a significant decline in both area and function over the past century with the majority of freshwater wetland loss attributed to agricultural conversion. Agriculture is the second largest industry in the State of Oregon and the State places...
Mold growth on cheddar-style cheese, though not a food safety issue, causes significant loss to the industry due to consumer rejection. For this reason, it is common for at-risk products, such as cheese shreds, to be coated with the mold inhibitor natamycin. While highly effective at extending shelf-life, preferences for...
The use of Landsat data has historically been constrained to spectral and spatial information derived from a carefully selected image or set of images. However, free and open access to Landsat imagery combined with advances in data storage and computing are revolutionizing how the Landsat temporal domain is used to...
Bacillus subtilis α-amylase was used to hydrolyze
starch from peeled and whole potatoes (Solanum tuberosum).
Effect of gelatinization temperature, pH, enzyme concentration,
temperature of hydrolysis and presence of calcium
ions were investigated. Optimum conditions for hydrolysis
were when α-amylase levels were 0.3 percent of the starch
concentration in the presence...
Landslides are ubiquitous within the state of Oregon, imposing an annual estimated cost of more than $10 million. Weak, saturated soils at steep slopes combined with persistent rainfall throughout most of the year provide a dangerous environment for this natural disaster, particularly in western Oregon. This grim situation is intensified...
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significant role in landslide susceptibility (Wilson
and Gallant, 2000). For seismic slope stability, an
Incorporating a life course perspective, this qualitative study used focus groups to explore the experiences of midlife adults who were simultaneously providing support to emerging adult children and aging parents. Results indicated that adults situated in middle generations held beliefs that endorsed family-based responsibility to both younger and older members....
As the Civil War dragged on, Abraham Lincoln’s election hopes in 1864 continued to become smaller and smaller. As late as August 23, 1864, Lincoln wrote, “This morning, as for some days past, it seems exceedingly probable that this Administration will not be re-elected. Then it will be my duty...
Plants often encase seeds in a nutritional reward to incentivize seed dispersal by birds and mammals, but these seeds may also be removed and destroyed by seed predators. Although birds are typically thought to be the primary seed dispersers of berries in temperate systems, in southeast Alaska and other salmon-bearing...
Books and literature help children and young adults develop language, cognitive, and social skills. Additionally children's literature enables individuals to develop a deeper appreciation for their own, and others' cultures and histories. This thesis analyzes the young adult historical fiction series Dear America, published by Scholastic press, and examines how...
Glacial isostatic adjustment (GIA) alters the amplitude and timing of ‘glacioeustatic’ sea level maxima and minima around the globe. No study has examined the intrinsic distance that one can correlate marine stratigraphic records of glacial–interglacial sedimentation across continental shelves subject to varying amounts of GIA. Here, we seek to model...