To evaluate and monitor insecticide resistance in onion thrips Thrips tabaci on onion (Allium cepa), we conducted a study using three field populations in the Treasure Valley of eastern Oregon and southwestern Idaho using the insecticides Lannate (methomyl) and Exirel (cyantraniliprole). To evaluate these two insecticides, biological assays were conducted...
2020 and 2021 brought the first reported outbreaks of salmonellosis epidemiologically linked to dry bulb onions in the United States. Outbreak investigations were not able to implicate a specific source of the contamination but speculated that contaminated water was a significant contributor. The Produce Safety Rule established minimum standards for...
Onion thrips (Thrips tabaci) are pests found in onion fields of the Treasure Valley, which is located in Eastern Oregon and Western Idaho. Thrips cause damage to this high value crop by feeding on the onion’s extracellular fluid, making photosynthesis more difficult to occur. The feeding from the thrips can...
Production of fresh produce takes place outdoors, and therefore, is exposed to many routes of contamination (e.g., soil, contaminated water, manure, etc.) by human pathogens. Although precautions are taken to reduce this risk, pathogens can be regularly introduced to produce handling facilities. To manage the risk of cross-contamination from potentially...
The primary objective of this study was to develop methods for
the selection of temperature sensitive division (TSD) mutants of
Chlamydomonas reinhardtii. Such methods were developed and four
temperature sensitive (TS) mutants were isolated and partially
characterized.
Wild type (WT) cells of the plus mating type were synchronized
by a...
The following text is a consolidated version of the Cakrasaṃvara Samādhi, along with the Guru Maṇḍala, Sūryārgha, Pañcagavya, Guru Pādārgha, Kāybhaḥ Pūjā, Rahasya Pūjā, Kalaśa Pūjā, Vāruṇī Pūjā, Bali Pūjā, Kīgaḥ Tine, and a Pātra Jñāna. The Cakrasaṃvara Samādhi, as has been discussed above, is the primary pūjā and sādhanā...
This thesis analyzes contributing factors to Zoom Fatigue and the issues surrounding “attentional dissonance,” or a feeling of tension or rupture between actual and virtual self-perception. The research examines current literature on Zoom Fatigue, and uses the sociological theory of Dramaturgical Analysis, developed by Erving Goffman, to further assess the...
Tibetan Buddhism has offered two distinct, seemingly dichotomous perspectives about motherhood as it relates to traversing the spiritual path. In the first, mothering is the antithesis to spiritual development and realization, as it tethers a practitioner to the mundane duties of saṃsāra, the cycle of rebirth and suffering, propelling her...
Christian communities vary widely in their degrees of acceptability or apprehensiveness toward newly developing technologies, ultimately aiming to help individuals optimally grow in their relationships to God and with others. Technologies viewed as conducive to accomplishing these goals are more likely to be accepted by Christian communities. Technologies viewed as...
In order to advocate for a nonviolent future, I argue throughout this thesis that we must redefine our sense of self within a social context. I assert that Communitarianism, which seeks balance between the individual and their many overlapping communities, can situate our identities as less absolute and more constitutive...
Contemporary spiritual tourism impacts many stakeholders including environmental ecosystems, tourists, tourist operators, and community members. Increasingly, in the era of the Anthropocene, there is a need for ethical guidance to inform spiritual tourism so as to mitigate social injustice and environmental degradation. This research project investigates the potential for the...
We have used the sequence-specific endonucleases Eco RI, Sma I,
Bam HI, Hsu I and Hae III as identification tools in following the
conjugal transfer of the well studied R plasmids Sa, R388, RP4 and R6K.
Transfers were both intergenus and intragenus. Plasmid fingerprints
were generated from both single and...
This paper discusses the structure, rationale, and
application of a monitoring system specifically designed to
identify and record conversion of lands with Soil Conservation
Service Soil Capability Classes I-IV. Research methodology and
design are structured to objectively assess the rates of agricultural
land conversion to non-farm uses over a given...
The indiscriminate release of fecal bacteria to the environment
can present a public health hazard when pathogenic species gain access
to drinking and recreational water sources. The extent of bacterial
contamination of surface and ground waters associated with animal
production units and waste application areas seems largely dependent
on the...
Cell division in a heat synchronized Tetrahymena pyriformis
(GL-I) cell can be delayed if the cell is exposed to X-irradiation (300
kVp, 20 mA, HVL = 0. 9 mm Cu, 25 R/ sec) prior to a critical time
after the end of the synchronizing treatment (EST). At the critical
time,...
Measurements for water retention calculations and physical
characterization were made on skeletal and non-skeletal soils in
southwest Oregon. A new bulk density sampler was designed for the
physical characterization of the steep, skeletal soils commonly
encountered in this area. The new sampler and the techniques
required for the measurement and...
In order to develop three models for use in quantifying the
environmental conditions of reforestation, extensive measurements
required for energy balance calculations were taken for a
reforestation site in southwest Oregon. The models are used to
decrease the number of measurements required to properly evaluate
the potential for heat or...
Of 149 wild animals from two western Oregon river drainage
areas and other localities in which "salmon poisoning" disease (SPD)
is enzootic, including ten mammalian and two avian species, 79
harbored Nanophyetus salmincola, the SPD vector. The shorttail
weasel, Mustela erminea; river otter, Lutra canadensis; spotted
skunk, Spilogale putorius; Norway...
The presence of the etiologic agent of "salmon poisoning"
disease, Neorickettsia helminthoeca, was demonstrated in eggs of
the trematode vector, Nanophyetus salmincola. Three dogs were
given 100,000 and one dog 82,000 ground fluke eggs by intraperitoneal
injection. The four animals developed "salmon poisoning"
disease and died. One of these dogs...
The literature relating to fascioliasis in experimental hosts,
and the clawed jird (Meriones unguiculatus) as an experimental host
was reviewed.
Four experiments were conducted using experimental hosts for
Fasciola hepatica. The first two experiments were done using Swiss
mice, B. P. laboratory albino strain; the third and fourth experiments
involved...
Background
Bcl11b, previously CTIP2, is a zinc finger nuclear transcription factor involved in the development of keratinocytes, teeth, T lymphocytes, and nervous tissue. Expression of Bcl11b has been reported in human head and neck squamous cell carcinoma (HNSCC) and increased expression correlates with poorly differentiated tumors. This study aimed to...
Twenty yearling sheep were allotted to four groups, each containing
five sheep of approximately equal weight. On experimental
days 0, 1, 2, 3, and 4, each sheep in each group was given the following
inoculations by stomach tube: five sheep in group I (Fasciola
hepatica-exposed controls) were given approximately 120...
Seven species of fresh water fishes belonging to three different
families and two species of snails from Ritner Creek, Polk County,
Oregon were surveyed for adult and larval trematodes. A total of
seven species of trematodes representing four families was recovered
from the intestine of the fishes. Of these, at...
The biology, history and synonyms of
reviewed and the known distribution given.
Fascioloides magna were reviewed and the known distribution given. Studies have shown that Cervidae are the natural hosts and domestic
ruminants the accidental hosts. The parasite is reportedly
pathogenic to goats and sheep but causes severe tissue reactions...
A two year study with 500 seedlings was conducted
in the harsh, drought prone southwest Oregon
environment to assess the effects of 12 soil surface
shading, mulching and vegetation control techniques on
soil temperature and moisture environments and seedling
growth. Treatments modified, to various degrees, soil
surface temperatures, reduced soil...
A model was developed for analysis of the soil water balance of
individual reforestation sites in western Oregon. The numerical
procedure for this model was programmed in compiled BASIC language and
calculations for an entire season are made in about 180 seconds on an
IBM AT microcomputer.
The processes that...
A microclimatology study was conducted on a high elevation clearcut
near the summit of Mt. Ashland in southwest Oregon to evaluate the effects
of frost on Douglas-fir seedling growth and survival. Frost and low
temperatures cause seedling stress through frost damage, frost desiccation,
increased root resistance, and decreased rates of...
Acid and alkaline phosphatase was localized histochemically in the intestinal epithelium and excretory duct respectively in fresh
frozen sections of Fasciola hepatica. Polyphenol oxidase was
localized in the vitellaria, vitelline ducts and egg-shells. The distribution
and nature of esterases was examined histochemically. Acetyl-cholinesterase
was observed in the tegument, neural ganglia,...
This qualitative study explored the gendered professional experiences of male elementary school counselors. The participants or co-researchers were twelve men of varied ethnic and racial backgrounds between 25 and 60 years old. They lived and worked in five US states in urban, suburban and rural settings. They provided school counseling...
This thesis argues for the importance of justice of recognition not only for humans, but the entire non-human world in the face of environmental destruction and climate crisis. The common response to the degradation of the world’s ecological sphere is to act with technological, scientific, and material based responses. However,...
How can healthcare providers, particularly pharmacists, help palliative care patients cope with the inevitability of death? This thesis reviewed how spirituality and religious beliefs can be utilized as key coping strategies for many patients and their loved ones regarding various stressors associated with facing mortality in palliative care. In the...
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Stuart Sarbacker, Committee Member, representing School of History, Philosophy and Religion
The purpose of this paper is to evaluate the extent to which ecological
principles were used in four documents of differing scope and intent, that address
management of forest resources and riparian zones in three National Forests of the
Pacific Northwest. We use the phrase "ecological principles" in a very...
Sphaeromyxa maiyai sp. n. (Myxosporidea:Myxiidae) is described
from the gall bladder of the Pacific tomcod, Microgadus proximus
Girard, from Newport, Oregon. The plasmodial (=trophic, trophozoite)
stage is discoid averaging between 1 and 2 cm. The spore averages
27.6 x 5. 6μm with pyriform polar capsules averaging 9. 3 x 3....
This thesis investigated the methods of failure in the webs of
built up girders. The beams had rectangular holes five and one-half
inches wide and seven and one-half inches high with rounded corners
in a web fourteen inches deep between flanges. The longitudinal
position of the hole edge varied from...
The temporal relationships among selected correlates of
hepatocellular damage were investigated in cordotomized, hypothermic
rats intoxicated with carbon tetrachloride (CC1₄). Rats
were spinally transected between C6 and C7 and allowed to become
hypothermic. CC1₄ (1.25 ml/kg ip) was administered as a 1:1 solution
in corn oil. Plasma alanine aminotransferase (ALT)...
A practical and versatile instrument has been developed both to
optimize the chemistry of bio- and chemiluminescence reactions and to
measure ultra-trace quantities of associated analytes. The instrument
consists of a pneumatic flow injection system linked to a detection cell and a
signal processing and readout system. The disk-like cell...
The effect of ultra-high pressure on the thermal emf of a
chromelialumel thermocouple is investigated using an indirect
method which does not require a direct knowledge of the temperature
of the pressurized junction. The unknown temperature is written
parametrically as a function of a directly measured quantity, the
electrical power...
In order to properly model the temperature distribution of a nuclear fuel pin, the thermal conductivity
of the fuel must be known. For sphere pac fuel, the
modeling of the conductivity is complicated due to the
fact that the fuel is a collection of spheres in a random packed bed....
A study of phosphorus loading and water quality implications was conducted for
the Oregon coastal lakes. The study was based on existing data for lake total phosphorus
concentrations and for watershed land uses. A phosphorus mass-balance model was
developed to predict lake total phosphorus concentrations from estimated phosphorus
loading from...
Sulfur-coated urea (SCU), a slow release nitrogen fertilizer,
may be economically competitive with conventional fertilizers, but
little is known of the mechanism of urea release from SCU and the
environmental factors which affect the urea release rate. Objectives
of this thesis were: (1) to determine factors which affect the rate...
Throughout the 20th century, windthrow has affected forests in the Bull Run watershed, a 26,500 ha basin that is the principal water source for the city of Portland, Oregon. Windthrow from storms in 1973 and 1983 was mapped into a geographic information system (GIS) and compared to a 1931 windthrow...
The yeast Brettanomyces bruxellensis is the most important wines spoilage yeast encountered during winemaking as it can survive in wine for long periods, requires minimal nutrients for growth, and can be difficult to control. Brettanomyces produces two major spoilage products, the volatile phenols 4-ethylphenol (Band-Aid, medicinal smell) and 4-ethylguaiacol (smoke,...
Purpose: The purpose of this study was to determine statistically the
effects of an automated science curriculum on the science learnings
of eighth grade students. This curriculum involved the use of
Keysort cards as a flexible handbook for teachers and included in
the directions for use a teaching method which...
There is considerable evidence that the growth and elongation of
plant roots increases linearly or almost linearly with increasing water
contents or decreasing moisture-tension of soil. If this is true it is
difficult to distinguish the effects of different water contents on absorption
phenomena such as water or ion uptake...
The purpose of the study was to provide a method for evaluating the effect, impact or role that (as perceived by automotive, diesel, automotive collision faculty and administrators) the nationally recognized industry training standards developed by Automotive Service Excellence (ASE) and National Automotive Technicians Education Foundation (NATEF) have on the...
Sport is an avenue for children and adolescents to improve physical skills as well as
enhance their psycho-social development. Despite the benefits of sport, numerous children
and adolescents choose not to be physically active. Consequently, several investigators
have sought to determine why some children choose to participate in sport, while...
Interweaving perspectives from both social cognitive psychology and Tibetan Buddhism, the present study examined common and differential effects of two styles of meditation: Loving-kindness meditation (LKM) and mindfulness meditation (MM). Psychological theories of construct accessibility postulate that cognitive constructs activated frequently are more readily available for processing stimuli. Researchers in...
Soil pore size distribution and water characteristics are important for water storage, water movement, and soil-plant interaction studies. Laboratory determinations of water characteristics and pore size distribution are time consuming and costly. Investigators have proposed many models to predict them from routinely available data. Most of the models are related...
In the study of gas chromatography a model is presented to simulate
a capillary gas chromatographic system. The model was developed
to study the concentrations of sample gas as a function of time and
space as it travels through the capillary column. The molecular migration
was approximated by elementary diffusion...
From the time when fluoroscopic screens were first used there
have been scattered references to reduction in their light output due
to age, use, etc. References are scarce and usually devoid of
quantitative data. A long-range program has been set up in an effort
to arrive at some meaningful information....
During karyokinesis in the ciliate, Tetrahymena pyriformis, strain GL-I, an extranuclear chromatin body (ECB) is frequently formed as an excluded mass between the two dividing daughter macronuclei. The formation and fate of ECB's were followed by means of Feu lgen, toluidine blue 0, and euchrysine staining and autoradiography (³H-thymidine). The...
Informed by feminist and queer theories, this thesis provides an alternate reading of selected narratives from the Hindu epic “Mahabharata”. By queering the narratives from the epic, this thesis highlights the existence of fluid notions of sexuality and gender present within Hindu religious texts. In doing so, the study aims...
This study was undertaken to determine both the amount and the
spatial variability of sand, silt, clay, and six fractions of coarse
fragments in soils representing harsh sites for reforestation. Particle size data were collected because of their direct relationship to
water holding capacity and the plantability and survivability of...
Bruno Latour’s Facing Gaia provokes us to embrace our Earthboundedness to approach the problematic political ecologies of the Anthropocene. Latour’s call for the Earthbound is to re-trace networks of society, institutions, and meaning and to challenge, as enemy, those that would continue to behave as if we lived on more...
In this thesis, in order to understand why Buddhists in Southeast Asia protect rainforests and to establish a solid foundation for Buddhist environmental ethic, my first two tasks are to draw a clear picture regarding two major environmental concepts--nature and anthropocentrism--in Buddhism and to defend the claims that the Buddhist...
Cutaneous melanoma remains the deadliest form of skin cancer, with a
diagnosis of metastasis indicating a median survival rate of less than a year. Solar ultraviolet (UV) radiation, especially childhood sun exposure, is an important etiological risk factor of melanoma. Previous studies determined that mice selectively lacking the nuclear hormone...
Fisheries management that is based on quantitative assessment has commonly relied on estimating the unfished biomass of a fished stock to compare current and historical population size. Developing predictive models for this requires many years of catch and abundance data. Smaller, new, or mainly recreational fisheries may not have the...
In response to the events on September the Eleventh, various media attempted to make sense of the seemingly radical altered political landscape. Comic books, though traditionally framed as low brow pulp, were no exception. This thesis is a work of rhetorical criticism. It applies Walter Fisher's Narrative Paradigm to a...
This study employs interdisciplinary methods to make transnational feminist sense of the microfinance phenomenon. Drawing upon a combination of discourse approach, textual analysis, political economics and critical theory construction, I fused a feminist critical discourse approach to excavate microfinance from neoliberalism. I designed an economic justice framework and executed an...
Forestry in the United States is no longer merely a theory or a subject for discussion; it has gotten down to concrete things in the woods. Nor is the growing of timber confined to public lands; it is gradually making headway on land in private ownership. It is becoming an...
Published October 1960. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
Published October 1960. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
Oxidative stress is the major driving force behind the aging process and many age-related diseases. However, direct experimental evidence of whether antioxidants, such as ascorbate (AA) and lipoic acid (LA) can slow the progression of aging process and/or reduce risks of developing degenerative disease is largely absent. This suggests a...
This thesis details my investigation of some pharmaceuticals and natural products on the transport of drugs which are substrates of P-glycoprotein (P-gp), such as cyclosporin A (CSA) and digoxin by using Caco-2 and MDCKII-MDR1 drug transport models. Three objectives were performed to address this goal. The first objective was to...
It was observed that certain myoelectric surface
potentials are of a pulse nature. The pulses have nearly
the same exact waveshape, but are asynchronously
repetitive.
Physiological evidence indicated that myoelectric
pulses are concurrent with the activity of a small unit
of organized muscle fibres (motor unit). The electrical
activity of...
It has been established that bilinear models
occur frequently in nature and offer some important
advantages from the standpoint. of controllability,
optimization and modeling. The estimation of
bilinear systeim models from the Measurements
of input-output data are discussed. In the
first approach a parametric model of a discrete-time
linear system...
The purpose of the study was to investigate the effectiveness of therapeutic non- directive play treatment with third grade boys who were low achievers in reading and to determine how treatment was associated with changes in reading achievement: vocabulary and comprehension; reading attitude and academic self-concept; role expectations and self-adequacy....
The purpose of this study was to investigate the use of therapeutic
self-directive play as a means of developing positive self-concepts
and motivation of educationally handicapped children.
Further consideration was also given to behavioral changes as viewed
by the classroom teacher and aide. The population of the study consisted
of...
The enzymes and pathways involved in the catabolism of
glucose by several strains of Streptococcus diacetilactis, Streptococcus
cremoris, and Streptococcus lactis, commonly called the
lactic streptococci, were studied. The presence of aldolase,
triosephosphate isomerase and alcohol dehydrogenase in these
organisms provided evidence for the operation of the Embden-Meyerhof-Parnas (EMP) pathway...
This study investigated the relationships between selected
perceptual-motor behaviors and the following: achievement in reading,
achievement in mathematics, academic self-concept, academic
motivation and classroom behavior. This investigation was designed
to explore the suggestion of Newell Kephart that there is a relationship
between perceptual-motor behavior and school success, and to
provide...
This study was designed to investigate the effects of nondirective group play on the self-concept and sociometric status of selected members of second grade classrooms. Specific hypotheses examined were: 1. Positive change in self-concept as measured by the Scamin Self-Concept Scale will be greater in the experimental group than in...
Alzheimer’s Disease (AD) is an abnormal part of aging that mainly affects those over the age of 65. The current therapies are only FDA approved for mild to moderate AD symptoms. Cannabidiol (CBD) is a non-intoxicating constituent of Cannabis sativa that has been shown to have beneficial effects on cancer,...
From British Columbia to northern California, coastal giant salamanders (Dicamptodon tenebrosus) are a dominant vertebrate predator in headwater streams. Though widespread, salamander health and abundance levels differ greatly between locations, provoking the question as to what factors may influence this variation and whether habitat features or biotic variables play a...
This study was conducted to investigate the relationship between
the Human Development Program (HDP) and reading achievement and
between HDP and the self-concept of selected fourth grade students
attending a public school. A further purpose was to investigate the
relationship between fourth grade students' measured feelings of
responsibility for the...
A rural watershed containing a protected forest area in the north
and a small rural community in the south was monitored for numbers of
fecal indicator bacteria as well as the incidence and origin of the
enteric pathogen Salmonella. Isolation of Salmonella only occurred
once in the protected watershed, while...
The current rate of global biodiversity loss and extinctions is unparalleled and a major concern. Freshwater organisms are facing particularly rapid rates of biodiversity loss. Amphibians, which require an aquatic environment for part of their life cycle, are one of the most vulnerable vertebrate groups. Amphibians are experiencing population declines,...
Animals can be naturally exposed simultaneously to multiple stressors. These include habitat changes, contaminants, diseases, invasive species, parasitism, and predation. Exposure to various combinations of biotic and abiotic stressors may induce behavioral changes that affect the way an individual interacts within its environment.Like other groups of organisms, amphibians are exposed...