Lamprey eel harvesting has systematically and periodically occurred along the Siletz River and its tributaries for as many as hundreds, or thousands, or tens of thousands of years that human families and lamprey eel populations have coexisted in the Siletz Valley ecosystem. Historical, cultural, and biological information for the twentieth...
Using a spectrometer and photomultiplier tube, I measured the electromagnetic radiation transmittance properties of three types of tissue-- ventral skin, cardiac muscle, and liver tissue--in the red-sided garter snake Thamnophis sirtalis parietalis between the wavelengths of 450 and 850 nanometers (nm). Control readings were taken using a 10⁻² neutral density...
Eight studies from a meta-analysis on St. John's wort by Klaus et. al. (1996) were analyzed according to the severity of depression manifest by their patients. The studies were chosen according to inclusion criteria: 1) the study was random, 2) the study compared St. John's wort to a placebo or...
An important by-product of the kraft pulping process, black liquor is currently used in most pulp mills to produce steam in a recovery boiler. Two important black liquor characteristics are viscosity and burning (firing) characteristics, which determine the operating efficiency of the recovery boiler. Kraft black liquor is a complicated...
Legislation to reduce the annual limit of field burning in Oregon has led to increased study of
alternative non-thermal grass-seed management methods. Of these methods, non-thermal residue
management, in combination with crop rotations and different tillage practices, offer potential to
equal or exceed crop production of conventional thermal production systems....
Interest in organizational culture has grown enormously over the last twenty years and much
effort has gone into investigating the relationship between organizational culture and
performance. Because most research to date has focused on large organizations, we chose to
investigate the culture in a community bank undergoing a cultural transformation....
Various vineyard practices influence the quality of a wine. In 1999, three levels of nitrogen (N), two levels of tillage and two levels of irrigation were applied to Pinot noir grape cultivars at Benton Lane Vineyards in the Southern Willamette Valley. N treatments were zero, soil and foliar applications. Every...
Indole-3-carbinol (13C), a metabolite of glucobrassicin, is found in cruciferous vegetables. It is able to act as an inhibitor or promoter of carcinogenesis depending on the species, the carcinogen and when it is given in relation to the carcinogen. This is probably due to the fact that it reacts in...
The diageotropica (dgt) mutation has been proposed to affect either auxin
perception or responsiveness in tomato plants. Auxins and cytokinins are plant
growth regulators known to interact with each other via a variety of mechanisms.
Here, we report the interactions of auxins and cytokinins in VFN8 wild-type and
dgt mutant...
Cell lines deficient in certain genes of the DNA mismatch repair (MMR) system show a marked resistance to the cell killing or apoptotic effects of DNA alkylating agents. The molecular mechanism for this resistance is not yet understood, but is currently of great interest because of the recent use of...
The timber and Christmas tree industries are important components of the Pacific Northwest economy. A goal of both industries is to produce high quality trees with high growth rates. Accomplishing this requires increased genetic quality of the trees grown. Tissue culture provides the most promise for propagating these superior genotypes....
The purpose of this project was to investigate play and our cultural assumptions as to its usefulness or lack there of. The concepts of hard work versus hard play were explored in order to discover when human beings are operating at their best. In terms of innovation and productivity in...
Age-related decline in the capacity of endogenous antioxidant systems
complicates pharmaceutical use by the elderly by potentially increasing the toxicity of
some compounds. Of particular interest is chemical detoxification via glutathione (GSH)
and attendant GSH-requiring detoxification enzymes, e.g. GSH peroxidases (GPX) and
GSH S-transferase (GST). These enzymes have been shown...
Organophosphate insecticides may produce sublethal, adverse effects on salmonid
growth, reproduction, maturation, swimming, and feeding. Chlorpyrifos, an
organophosphate insecticide, was detected by the Oregon Department of Environmental
Quality in the Hood River and tributaries during March 1999 at levels exceeding state
water quality standards in the range of 0.011-0.482 μg/L....
Regression testing is a common and necessary task carried out by software practitioners to validate the quality of evolving software systems. Unfortunately, regression testing is often an expensive, time-consuming process, particularly when applied to large software systems. Consequently, practitioners may wish to prioritize the test cases in their regression test...
Hispanics in Hood River County, Oregon account for roughly 25% of the population, with many employed in agriculture. A community health survey was carried out in Hood River County during the winter months of 2001 with the purpose of evaluating the health conditions, needs, and barriers to access of needed...
This project calculates the value of β for ice particles based on wavelength dependent values of their refractive and absorptive indices. β is the ratio of the force due to radiation to the force due to gravity acting on a particle in the solar system. This parameter can later be...
Raspberry bushy dwarf virus (RBDV) infects red raspberry and black raspberry worldwide. Infection causes reduced vigor and drupelet abortion leading to crumbly fruit and reduced yields. While this crumbly fruit can still be used in juice, jam, and preserves, it cannot be used for the more valuable fresh and individually...
The end of the Cold War brought about changes within international political relations that resulted in expanded interest in global civil society. Such developments, like globalization and democratization, have encouraged the growth of social and political organizations. Political scientists have found that these inter-governmental and non-governmental organizations have a significant...
The optical characterization of transparent conductive thin films is demonstrated. The basics of transparency and conductivity, as they relate to transparent conductor research, are explained. A functional model of the reflectance and transmittance of a sample film, including interference fringes, is derived from the Fresnel electric field amplitude coefficients. The...
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...
The acorn woodpecker (Melanerpes formicivorus) is among the most common primary cavity nesters of the Oregon white oak (Quercus garryana) woodlands. Understanding their selection of granary sites is important in evaluating habitat quality and management actions. I hypothesized that granary locations would be consistent with the optimal foraging theory. Site...
A genetic selection study to determine the effects on egg hatchability and subsequent chick performance of Japanese quail eggs incubated at a 38.9° C (102° F) dry bulb temperature (Selected, S) when compared to 37.8 C (100°F) (Control, C) was conducted for four consecutive generations. Eggs from a randomly mated...
Gaps in the forest canopy allow more light to reach the understory. Since
light in the understory is heterogeneous, understanding the physiological
processes in gaps and non-gaps will improve estimates of carbon balance. This
research outlines an approach for defining carbon balance for Salal (Gaultheria
shallon Pursh.), a dominant understory...
To understand human social environments and interaction, it is often necessary to examine them in creative and metaphorical terms. In this thesis, a model of chemical interaction, atomic and molecular bonding, and the role of electrons, nuclei, and other chemical principles are used to describe the social environment of human...
The psychoactive component of marijuana, A9-tetrahydrocannabinol (THC), is known
to have effects in humans that are mediated by the cannabinoid receptor (CB 1). Although a great deal of research has been done to confirm the interaction of exogenous cannabinoids with the CB 1 receptor, little is known about the receptor's...
Saturated hydraulid conductivity (Ks) is a central soil physical property in determining water movement and contaminant transport through soils; hence modeling this system requires an accurate determination of K. Decimeter-scale KS measurements employing cores or infiltrometers are used frequently, but field-scale KS values are required to encompass the full range...
A series of seven magnesium-doped copper scandium oxide films were made by radio frequency sputtering, and intercalated at various oxygen pressures to create different oxygen concentrations in each film. The objectives of this study were to verify the p-type nature of these transparent conductive thin films, to determine the correlation...
Plasminogen activators (PAs) have been implicated in: ovulation, oocyte maturation, fertilization, implantation, and many other reproductive activities. Three pathways have been implicated in the activation of the PA regulatory system. These include the conventional PKC and cAMP-dependent signaling pathways, and also an independent pathway thought to be regulated by protein...
A lexicon to define the sensory properties of melted Cheddar cheese was created
using a trained descriptive panel. The lexicon characterized appearance (surface rupture,
meltedness, oiliness, and edge browning) and texture (stringiness, stretchiness,
springiness, firmness, toothpull, smoothness, cohesiveness, denseness, and chewiness).
Three brands of commercially available shredded Cheddar cheese were...
Little is known about Frankia, a gram-positive, nitrogen-fixing bacterium, because of the difficulty associated with isolating pure cultures. This nitrogen-fixing symbiosis involves Frankia and the roots of actinorhizal host plants belonging to eight plant families and 25 genera. These plants are important pioneer species traditionally found in nitrogen-poor soils and....
Sarcocystis neurona is the 1responsible for the disease Equine Protozoal Myeloencephalitis (EPM). Exposure rates to S. neurona across the United States is about 50%, yet only about 2% of exposed horses develop EPM. The cell-mediated immune (CMI) response is hypothesized to be important for protective immunity against this disease. The...
Horticultural and nursery crops are the leading agricultural commodity in Oregon. Among currently grown nursery plants, Verbena x hybrida is a staple ornamental. It is grown and shipped worldwide, thus requiring a high level of certainty concerning the plants’ health and potential viability. V. x hybrida cultivars have been infected...
The cabbage maggot, Delia radicum (L.) (Diptera: Anthomyiidae) is a serious
pest of cruciferous crops (i.e. broccoli, cabbage, turnip, rutabaga) in North America and
Europe (Coaker and Finch, 1971; Whistlecraft et al., 1985). The adult flies lay eggs
around the base and in cracks at the soil surface around wild...
This study sought to conduct an in depth analysis of women’s first sexual experiences looking for factors contributing to the experience and the emotional outcomes of first intercourse. Fourteen heterosexual, female, college students were interviewed about their first sexual experience and sexual background using a semi-structured interview format. The narratives...
Rockfish of the genus Sebastes are important components of Oregon reef communities. I examined patterns of age and growth in young-of-year rockfish across two nested spatial scales – local and regional – along the Oregon coast. Using otolith microstructural examination, I examined the relative importance of local versus regional factors...
The purpose of this study was to research and analyze the influencing factors that have led occupational therapy further away from mental health practice. The following research questions were used as a basis to analyze the shift of the OT profession away from mental health:
1. To what extent are...
Presented here is an investigation and comparison of two entrapment methods of algae. Conventional calcium alginate bead entrapment is compared to a recently described modified bead entrapment method, utilizing poly(ethylene glycol) and calcium alginate, which results in void or capillary formation within the beads. It is shown that algal growth...
Tot Mizaj, a central term in Traditional Uyghur Medicine (TUM) theory, says there are four typical characters in all things in nature; the geography, people, organs, animals, foods, and medicines. It is by maintaining balance of these characters that existence is perpetuated. Each Mizaj, corresponding to one element; fire, air,...
The nursery industry plays a critical role in Oregon's economy. An increase in wood-boring insect, or borer, activity has impacted the industry. The goal of this research is to determine key borer species in the nursery industry, flight times so targeted spray schedules can be established, and assess grower knowledge...
A survey of a non-random sample of adults was conducted in Angers, France to
investigate possible cultural changes in dietary behaviors that may contribute to
increasing rates of obesity. Participants described contemporary habits regarding eating
habits and activity level, as well as attitudes and opinions about obesity. The results
largely...
This study compares the requirements of three forest certification systems, the Sustainable Forestry Institute (SFI), the Forest Stewardship Council (FSC), and the International Organization for Standardization (ISO), with the 2005 McDonald-Dunn Forest Plan Revision. The analysis was done with a series of matrices comparing the requirements of SFI and FSC...
Non-alcoholic Steatohepatitis (NASH) is an emerging form of liver disease associated with obesity, type II diabetes and dyslipidemia. As the prevalence of these metabolic conditions increases, so too has the occurrence of NASH in all sectors of the population. The pathology of this disease is similar to its alcoholic form,...
Motivation: It can take considerable amounts of time and effort to use existing computational tools to analyze a small RNA sequence for the purpose of determining if it is characteristic of microRNA. It is similarly tedious to search for homologs to known microRNA sequences in the rapidly growing collection of...
Five new anti-zebrafish cytochrome P450 (CYP) antipeptide polyclonal antibodies were tested for tissue specificity using immunohistochemistry. The antibodies are for the zebrafish CYPs IA, 2K6, 2K7, 3A65 and 3C1. Three of these antibodies were also compared to existing antibodies made against CYP isozymes in rainbow trout (Oncorhynchus mykiss). Individual staining...
The Elliptic Curve Digital Signature Algorithm (ECDSA) is a public key cryptosystem used for creation and verification of digital signatures in electronic documents. In this thesis, we created a Java applet that provides the functionality of the ECDSA using all of the NIST elliptic curves over GF(p). This applet was...
Port-Orford-cedar (POC) (Chamaecyparis lawsoniana (A. Murl.) Parl) is an
important tree species native the coastal ranges of southern Oregon and northern
California. The tree is a false-cedar in the cypress (Cupressaceae) family and is used for
timber and planted as an ornamental. The tree in most of its native range...
"‘Biometrics is at the forefront in our agenda for homeland security,’ declared Asa Hutchinson, the Department of Homeland Security's undersecretary for border and transportation security, at the 2004 Biometric Consortium Conference” [11].
Flashy retinal scanning and voice activated computers were once considered technologies for science fiction movies and novels. Nowadays,...
Although the question of free will has persisted throughout the history of philosophy as an important metaphysical consideration, rarely does the inquiry include empirical evidence from other disciplines concerned with human behavior. In this interdisciplinary paper, I combine the wisdom of psychologists, metaphysicians, and philosophers of science to comment on...