Optical potential for antikaon-nucleus strong interactions are constructed using
elementary antikaon-nucleus potentials determined previously. The optical potentials
are used to determine the existence of a kaon hypernucleus. Modern three
dimensional visualization techniques are used to study model dependences, new
methods for speeding the calculation of the optical potential are developed,...
The objective of this study was to examine the published clinical
literature on the prophylactic therapy of angina pectoris with
the organic nitrates in order to determine the relationship between
experimental design and the conclusion of efficacy reported by the
investigator. A search for articles reporting original clinical investigations
on...
Attempts were made to study the effect of parathion and DDT
on the postnatal development of mice. Parathion, DDT or corn oil
(control) was administered to gravid mice during the first, second,
and third trimesters of pregnancy. Thus, nine groups of offspring
were obtained. Four different techniques, Audiogenic Seizure,
Conditioned...
It is common to characterize adrenergic receptors by placing
them in one of two categories, alpha or beta. The receptors responsible
for adrenergically induced increase in cardiac contractile force
and glycogenolysis are usually classified as beta receptors, but such
a classification is not definitely established. Therefore, an attempt
was made...
Virus contamination in a potato breeding program can seriously
disrupt the variety development process. Experiments were conducted
from 1989 through 1993 to: evaluate the extent to which Potato
Leafroll Virus (PLRV) and Potato Virus Y (PVY) can invade a breeding
program, determine viral spread within hills and within individual
tubers,...
The diversity of traits in varieties of potato outside of its South American birthplace is a small subset of that available in the Andean center of origin. Among the traits that evoke most interest are skin and flesh pigments. Recent studies have pointed to the high antioxidant activity and potential...
There are many different types of automatic data collection technologies that have been used in transportation system applications such as pneumatic tubes, radar, video cameras, inductive loops detectors, wireless toll tags, and global positioning systems (GPS). Nevertheless, there are still multiple examples of important and helpful transportation system data that...
Twenty-three bottom-trawl fish assemblages were identified from the relative biomass of
33 dominant species that occurred in the National Marine Fisheries Services' triennial
trawl surveys over the continental shelf and upper slope off California, Oregon, and
Washington from 1977 to 1992. The assemblages accounted for about 70% of the total...
The last decade has seen a drastic interest in microgrids throughout the world. Even though this trend might seem to be just another technological solution in the energy sector, it is a part of a greater transition from a centralized energy system to a more decentralized one. However, unlike most...
Purple Pelisse is a specialty ‘fingerling’ potato with purple skin and dark purple flesh. It has medium maturity and sets a large number of smooth, small, fingerling-shaped tubers. The tubers have medium specific gravity and high levels of antioxidants. This potato variety is mainly intended for the fresh market but...
Pyrenophora tritici-repentis is a necrotrophic fungus causal to the disease tan spot of wheat, whose contribution to crop loss has increased significantly during the last few decades. Pathogenicity by this fungus is attributed to the production of host-selective toxins ( HST), which are recognized by their host in a genotype-specific...
A study of the effect of mixing on the oxygen uptake rate of
estuarine bottom deposits is presented. The method of study involved
the mixing of samples of bottom deposits with the overlying water to
result in concentrations of suspended matter in the same order as
observed in the estuary....
In situ light and dark planktonic and benthal respirometers were
used to measure the oxygen requirements of Yaquina estuary water
and benthal deposits. Respirometer devices were constructed so that
actual conditions of mixing could be simulated and benthal deposit
disturbance would be minimized.
A mathematical model of a benthal respirometer...
Citizen-science projects engage volunteers to gather or process data to address scientific questions. But
citizen-science projects vary in their ability to contribute usefully for science, conservation, or public policy.
eBird has evolved from a basic citizen-science project into a collective enterprise, taking a novel
approach to citizen science by developing...
There is a widespread problem with looting and vandalism of cultural resources in the Pacific Northwest. To combat this problem law enforcement must have the assistance of the archaeological community. To be able to assist law enforcement, archaeologists and cultural resource specialists must have the proper training in cultural resource...
Two types of temporary poois, known as playas, occur in semiarid southeast Oregon. Vegetated upland playas are found in the High Lava Plain province; barren alkaline-saline playas are found in the Basin and Range province. Both types become ponded in most years, but they often lack redoximorphic features indicative of...
Human settlement patterns are the ways in which people locate themselves over the terrain in their area of occupation. Settlement pattern prediction attempts to define and understand the factors in culture, technology, and environment that shape the spatial distribution of habitation sites for a given group of people. A systematic...
During the 2006/07 academic year, 582,984 international students studied in the United States (Open Doors Study, 2007). Roughly 430,000 of these international students were pursuing Bachelors or Graduate level degrees. Of the international students that complete degrees, most will return to their home country and will be unable to attend...
Teamwork has become a popular operational strategy applied as part of workforce management plans in manufacturing and service industries. Teamwork has been commonly used in organizations to pursue different goals such as increase business operations agility, boost company productivity, improve quality in operations, increase company flexibility, promote collaborative learning, hasten...
There is an increasing world inventory of radiotechnetium (mainly
⁹⁹Tc) and it is inevitable that some of this will be released to the
environment. However, little is known about the environmental behavior
of this element.
This work examined technetium's behavior in two representative
freshwater species, the pearl mussel (Margaritifera margaritifera)...
In this work, we systematically explore the effectiveness of optical aberration correction over a wide range of optical depths using the Segmented and Zernike Polynomial bases. We manufacture a set of 16 optical phantom samples consisting of a clear polyester resin substrate embedded with varying concentrations of aluminum oxide (Al₂O₃)...
A synthesis of over 2000 paleoclimate proxy records is performed via a data assimilation framework that expands upon previous efforts by implementing a suite of physically-based proxy system models, and which provides the first example of an observationally independent, multi-seasonal (DJFM, JJAS) paleoclimate reanalysis. This methodology is contrasted against previous...
A methodology for improving quality and reducing life cycle
costs of mechanical systems is described. The principal concept is
that a system can be designed, in the conceptual stages, to be easier to
diagnose for failures. To perform this, functional decomposition and
form to function mapping are utilized both as...
This thesis seeks to better understand the most pressing cultural barriers to progress in the sustainability movement, and to offer suggestions for overcoming barriers. This research includes a two-year long case study of the sustainability movement at OSU, where the researcher coordinated projects encouraging behavior change. Despite increasing severity and...
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David A. McMurray
This thesis seeks to better understand the most pressing cultural
Biologists have long been fascinated with reproductive traits, in part because they are frequently exaggerated or showy, and they commonly vary among closely related species. Exaggerated sexual traits, in particular, have been the focus of intense empirical and theoretical research, but most of this work has focused on traits involved...
Red Light Ladies presents a perspective on prostitution in North America, within the context of the western mining frontier. A biographical profile of the frontier
prostitutor is presented, along with an archaeological model of settlement patterns and material culture. Settlement patterns and demographic changes in the prostitutor
population are hypothetically...
The immune system has been identified as a very sensitive target for the toxic effects of 2,3,7,S-tetrachlorodibenzo-p-dioxin (TCDD). Exposure to TCDD has been shown to disrupt the generation of both cell-mediated and humoral T cell-dependent immunity in laboratory animals; however, the mechanism remains unknown. In this dissertation, the hypothesis is...
This paper describes the development of structural layer coefficients
for open graded asphalt emulsion surfacing layers which can be used with
the AASHO pavement design method, as modified by the U. S. Forest Service,
Region 6.
A field survey conducted to document the history, performance and
material characteristics of in-service...
Millions of children are exposed to various types of violence throughout their school years. American children, by the time they are 18 years old, have seen more than 100,000 acts of violence on television alone. The effect of exposure to violence becomes a part of a child's life experience and...
Submerged aquatic vegetation (SAV) species, such as seagrasses, are highly valued in estuaries because of the many economic, ecological, and cultural services that they provide, including shelter for fisheries, minimizing water turbidity, and improving am-bient water quality. SAV can also alter its physical environment by attenuating wave and current velocities,...
As the number of students and faculty involved in online learning in recent decades has increased, we recognize that there is a limited understanding of how learners react, interact, behave, and are served by the various components in the information delivery processes. When learning online without an instructor present in...
Burkholderia cepacia complex (Bcc) bacteria reside in soil, plant rhizospheres, and water, but the prevalence of Bcc in outdoor environments is not clear. In this study, we sampled a variety of soil and rhizosphere environments with which people may have contact: playgrounds, athletic fields, parks, hiking trails, residential yards and...
Soil erosion by mass wasting is the major problem on forest
lands of the Pacific Northwest, The clay fractions of soils from a
large number of sites in Oregon's Western Cascades were characterized
in order to determine the relationships of various clay materials to
mass movements. Each site was either...
The diverse lichen flora of the Pacific Northwest is being impacted by
population growth and by forest management practices. Accumulating information
about our lichen flora will improve our conservation strategies. This dissertation first
collects information to improve our understanding of how lichen communities vary
among forests of differing structure, and...
Fracking and natural gas have been widely studied in public opinion research over the years, but few studies evaluate natural gas export and the perceptions of its associated economic benefits and environmental risks. Since the shale revolution in the early 2000s, the U.S. transitioned from a net natural gas importer...
Since the late 1970s, archaeology has grown into an industry whose
practitioners work in both public and private sectors. As an industry, modern
archeology is commonly known as Cultural Resources Management, or CRM. CRM
emerged from a surplus of employment opportunities made available to archeologists
after the passing of National...
We report the use of MIL-120 as a water-stable and cost-effective metal-organic framework (MOF) for selectively capturing CO₂ from wet flue gas. Synthesized using inexpensive and environmentally benign reagents in water, MIL-120 possesses one-dimensional pores decorated with hydroxyl-bridged Al(III) ions and benzene rings with an interstitial spacing of 4.78 Å....
The HENRI system was developed to narrow the pulse width of TREAT from 89 ms to below 60 ms with the goal of improving the test reactor's ability to simulate RIAs in LWRs by rapidly injecting helium-3, a strong neutron poison, into the core. A coupled model using the CFD...
Blackberry (Rubus ssp. Rubus) cultivars, three trailing types (Marion, Black Diamond, and Obsidian) and one semierect type (Triple Crown), were studied for their response to different types of fertilizer from 2011–12, at a certified organic, grower collaborator site located in Jefferson, OR. Plants were fertilized at a target rate of...
Angiosperm and coniferous tree species utilize a continuum of hydraulic strategies. Hydraulic safety margins (defined as differences between naturally occurring xylem pressures and pressures that would cause hydraulic dysfunction, or differences between pressures resulting in loss of hydraulic function in adjacent organs (e.g., stems vs. leaves) tend to be much...
The objective of this project was to develop an analytical model of a light-framed wood structure using a prevalent structural analysis computer program in order to evaluate system effects and define load paths within the structure, especially under extreme wind events. Simplified modeling techniques and material definitions were developed and...
Multibeam (1 m resolution) and side scan data collected from an autonomous underwater vehicle, and
lava samples, radiocarbon-dated sediment cores, and observations of flow contacts collected by remotely
operated vehicle were combined to reconstruct the geologic history and flow emplacement processes on
Axial Seamount’s summit and upper rift zones. The...
Full Text:
Geologic history of the summit of Axial Seamount,
Juan de Fuca Ridge
David A. Clague
Monterey Bay Aquarium
Traditional robots have a long history in nuclear-related work because their integration decreases risk to humans in dangerous environments. Soft robotics is one promising new branch of traditional robotics with proposed applications in industry, medicine, and society. Collaborators from the Robotics mLab at Oregon State University (OSU) are currently working...
Neotropical characiform fishes form one of the most diverse freshwater ichthyofauna in the world. Knowledge of evolutionary processes that generated and maintain the immense characiform lineage and morphological diversity is still poorly understood. When did characiform lineages diversify? How have major geological and environmental changes affected diversification? Why are some...
Performance measurement is a process that begins with a decision on what to measure followed by identifying proper metrics and data sources. While there is substantial literature devoted to measuring the performance of hospitals and clinics in terms of indicators such as health outcomes and finances, it is vital for...
To best manage Eagle Creek National Fish Hatchery and minimize any negative impacts that the current hatchery program may be having on Endangered Species Act-listed salmonids in the Eagle Creek Basin, I determined if wild fish are being displaced from preferred habitats by hatchery salmonids Oncorhynchus spp. This thesis had...