CR-39 foils were irradiated as part of nuclear accident dosimetry experiments using the Godiva reactor at the Nevada National Security Site and the Caliban and Prospero reactors at the Valduc Centre for Nuclear Studies in France. The irradiated foils were chemically etched using the standard Lawrence Livermore National Laboratory process...
This study employed ethnographic methodology to investigate and record the post-camp, pre-assimilation period of Laotian refugees.The primary goal was to document the special problems and experiences of the Laotian population as they attempted to adjust to new roles and expectations within mainstream North American society.Oral histories and biographical statements focused...
Intertidal herbivores, such as isopods, help regulate and contribute to nutrient cycling and organic carbon flow through the trophic levels in estuaries and coastal ecosystems. Though much is known about the microbiomes of macrophyte leaves that serve as the primary food source for isopods, and (to a lesser extent) the...
In order to understand the atmospheric branch of the earth's
hydrologic cycle on the global scale, an atmospheric moisture balance
is diagnostically analyzed from the January and July data of the OSU
atmospheric general circulation model, which has been integrated for
thirty-nine months of simulation with seasonally-varying sea-surface
temperature and...
Thermodynamical and dynamical aspects of tropical cloud
clusters are studied using data from the GARP Atlantic Tropical
Experiment (GATE). The data set used in this study is a
three-dimensional gridded set of upper-air analyses constructed by
Ooyama and Chu (Hurricane Research Division, AOML/NOAA and
SSEC-University of Wisconsin) for wind data...
Hypotheses of phylogenetic and historical zoogeographic relationships of glyptocephalines (Glyptocephalus cynoglossus, G. zachirus, G. stelleri, Microstomus kitt, H. pacificus, H. achne,
Embassichthys bathybius, and Tanakius kitaharae) were constructed based on comparative anatomy and external morphology. The phylogenetic approach was cladistic and character polarity was
determined by using out-group comparison. One...
Numerical simulation of the January and July global
climate with the OSU two-level atmospheric general circulation
model has generated time series of the global
distribution of selected climatic variables. Analyses of
these data for the kinetic energy and available potential
energy based on 31-day time mean statistics have been
made...
Time of Arrival (TOA) is a popular technique used for geolocation. This thesis evaluates the use of TOA techniques indoors. The accuracy of measuring distances using TOA is dependent on the bandwidth of the system and the multipath conditions between the receiver and transmitter. System bandwidth has a significant effect...
A specially designed gas chromatograph with both TCD and FID has
been tested for the measurement of the diffusion coefficients of methane and propane in helium. Knox's arrested elution technique(⁴) was used and yielded a value of 0.6431 cm²/sec averaged with the value
obtained by Yang and Hawkes(⁷). Values of...
Approximate string matching is commonly used to align genetic sequences (DNA
or RNA) to determine their shared characteristics. In contrast with the standard
dynamic programming methods which use local edit distance models, the Walking
Tree heuristic method was created to handle non-local changes, e.g., translocations,
inversions, and duplications, altogether and...
The adsorption and elution of the antimicrobial peptide nisin at hydrophobic,
silanized silica surfaces coated with the poly[ethylene oxide]-poly[propylene oxide]-
poly[ethylene oxide] surfactant Pluronic® F108 was measured in situ, with ellipsometry.
While such layers are known to inhibit protein adsorption, nisin was observed to adsorb in
multilayer quantities, to an...
.
________________________________________________________________________
Yuan-Ching Tai, Author
ACKNOWLEDGMENTS
In spring 2003, I quit after six years
Purpose: The purpose of this study was to determine the effectiveness, if any, of ten weeks of motor psychophysics training on the
development of dynamic muscular strength (as measured by the bench
press and squat) in male college athletes and non-athletes.
Procedures: This study was conducted during the first (spring)...
The purpose of this research was to determine whether
student academic achievement in college computer science
programs in the Republic of China (ROC) could be predicted
by factors reported to be effective in US studies. The
relationship between these factors and course performance in
computer science programs was examined. Gender...
This study explores private and public campground markets in Oregon. A profile of
private and public campgrounds, their prices, location, and amenities, served as the supply
side statistics while responses from the 1997 Campground Questionnaire provided data
for demand of Oregon campgrounds. The questionnaire inquired about respondents' last
camping trip...
This thesis is a preliminary archaeological predictive model and project-planning
tool created for the Oregon Department of Transportation (ODOT) as part
of a statewide planning effort to enhance the agency's ability to assess the potential
impacts of highway projects on archaeological resources. This model addresses the
archaeological sensitivity of the...
Long-standing research has highlighted the critical role of physical and outdoor activities for children’s health and wellbeing. During the COVID-19 pandemic, children and youth around the world experienced heightened stress and poor mental health, which coincided with a decrease in active play and increase in screen-based activities. This work aims...
This work is concerned with determining whether nicotine has a role in promoting oxidative damage in human tissue, particularly in lung tissue. This follows from recent reports of a novel lung disease found in some E-cigarette users, characterized by oxidative damage and elevated levels of neutrophils (termed “vaping disease”). It...
The main objective of this study is to assess seafood marketing and pathway in Nigerian coastline (the case of Lagos and Ondo States in the South West, Nigeria).
The specific objectives were to determine the: demographic characteristics of seafood marketers in the study area; gender pathway involved in seafood marketing...
Linkages between land use and its influence on the atmosphere have been a long-standing research area. For example, what is the impact of irrigated agriculture on downwind rainfall? Global-scale models show that moisture recycling is an important source of water for inland regions around the world, but they do not...
An aqueous solution of technical glyphosate [N-(phosphonomethyl)
glycine] was applied in homogeneous sprays of 120, 180 and 300 μm
droplets to seedlings of a bush type green bean (Phaseolus vulgaris
L. 'OSU 1604') at a carrier rate of 20 1/ha. At each droplet size
all combinations of 3 dosage levels...
This study accessed household fish demand and supply in the coastal Areas of Ondo State, Nigeria. Multistage sampling technique was used. The study areas were purposively selected because it falls along the coastal areas of the country. Three villages/towns where fishing activities are dominant were randomly selected while 60 respondents...
Approximate string matching is commonly used to align genetic sequences (DNA or RNA) to determine their shared
characteristics. Most genetic string matching methods are based on the edit-distance model, which does not provide
alignments for inversions and translocations. Recently, a heuristic called the Walking Tree Method [2, 3] has been...
This paper introduces a simple yet effective shape analysis mechanism for geometry processing. Unlike traditional shape
analysis techniques which compute descriptors per surface point up to certain neighborhoods, we introduce a shape analysis
framework in which the descriptors are based on pairs of surface points. Such a pairwise analysis approach...
The meaning of biological sequences is a central problem
of modern biology. Although string matching is well understood
in the edit-distance model, biological strings
with transpositions and inversions violate this model's
assumptions. To align biologically reasonable strings, we
proposed the Walking Tree Method [4,5,6,7,8], an
approximate string alignment method that...
Published August 1944. 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
Consumers' risk perceptions are examined to explain the underlying reasons for consumer
concern associated with milk from dairy herds treated with recombinant bovine growth
hormone (rbGH). A focus group study was employed as an initial step in exploring the
primary influences of consumer apprehension toward rbGH's use. The information
obtained...
It is well known that the ratio of ammonia oxidizing archaea (AOA) and bacteria (AOB) ranges widely in soils, but no data exist on what might influence this ratio, its dynamism, or how changes in relative abundance influences the potential contributions of AOA and AOB to soil nitrification. By sampling...
Over the last several decades, potato production has increased globally as it has been recognized as an important component to improving food security. However, potato production has been continuously challenged by pests. Current pest management practices rely heavily on chemical pesticides. Unfortunately, the overuse of pesticides can be harmful to...
A method of calculating decay heat is presented which is a simplification of existing calculational methods, the summation method in particular. The method involves the assumption that one physical process, neutron capture, is negligible in order to simplify the governing physical equations. A Greens function is derived and the decay...
Alzheimer’s Disease (AD) is a neurodegenerative pathology currently affecting nearly 44 million individuals worldwide, yet there are not currently any effective treatments or preventions for AD despite the rapid development in our understanding of the disease over the last four decades. The medical and sanitary innovations of the last century...
The effects of selected family characteristics on
interrelated components of household asset portfolios over a
three-year time period were investigated. Specifically, this
study attempted to conceptually define mental accounts, to
identify own-adjustment and cross-adjustment characteristics
of these mental accounts, to explore influences of selected
family characteristics on these mental accounts,...
In experimentally exposed mice, the environmental contaminant 2,3,7,8 tetrachlorodibenzo-p-dioxin (TCDD) produces significant suppression of adaptive immune responses at low doses. However, the underlying biochemical and cellular mechanisms of TCDD-induced immunotoxicity have remained elusive since the identification of these effects nearly 30 years ago. Antigen-presenting cells (APC) constitute various populations of...
Spatial flux profiles were calculated in idealized,
optically-thin ( 1 mfp) cell systems using integral
transport theory. Numerical accuracy improvement and
convergence efficiency in computing these spatial flux
profiles was the primary concern. Toward these ends, kernel
volume-averaging techniques for curvilinear cell systems, a
reflective angular-dependent edge source boundary condition...
At a time when the biodiversity on Earth is being rapidly lost, new technologies and methods in genomic analysis are fortunately allowing scientists to catalog and explore the diversity that remains more efficiently and precisely. The studies in this dissertation investigate genomic diversity within the milkweed genus, Asclepias, at multiple...
Exposure to TCDD suppresses the generation of immune responses through unknown mechanisms. Interestingly, TCDD enhances inflammatory responses to various stimuli. The goal of the studies presented in this thesis was to examine the role of hyperinflammation in TCDD-induced immunotoxicity. Previously we observed an increase in Mac-1⁺ cells in the spleen...
To determine the invasion threat to the NE Pacific of marine algae arriving on Japanese debris from the 2011 Great Tōhoku Earthquake and Tsunami, my colleagues and I took up the task of identifying the algal species on 42 of the most heavily fouled debris items that landed on the...
Skeletal muscles provide several functions, including, yet not limited to, voluntary body movement and locomotion, posture and body position, and soft tissue support. Skeletal muscles also play a role in metabolism, requiring energy to facilitate contraction. Each skeletal muscle serves a different purpose despite seeming to perform the same task....
One of the largely undetected and untreated health conditions affecting the Latino population in the United States is depression. Although the onset of depression can be influenced by a variety of factors that differ among individuals, Latinos in the United States are subject to certain cultural-specific social and environmental stresses...
The wind and thermodynamic fields associated with eastern
Atlantic cloud clusters are studied using radiosonde data from
the Global Atmospheric Research Program Atlantic Tropical Experiment
(GATE). These data are from the gridded set of winds prepared
by Dr. Katsuyuki Ooyama (AOML-NOAA) and Dr. Jan-Hwa Chu
(SSEC, University of Wisconsin, Madison)...
Exotic species dominate many communities; however the functional significance of species’ biogeographic origin remains highly contentious. This debate is fuelled in part by the lack of globally replicated, systematic data assessing the relationship between species provenance, function and response to perturbations. We examined the abundance of native and exotic plant...
Full Text:
L. X
Crawley, Michael J. X X
Damschen, Ellen I. X
Dantonio, Carla M X
Exotic species dominate many communities; however the functional significance of species’ biogeographic origin remains highly contentious. This debate is fuelled in part by the lack of globally replicated, systematic data assessing the relationship between species provenance, function and response to perturbations. We examined the abundance of native and exotic plant...
Full Text:
. Brudvig20, Marc Cadotte21, Chengjin Chu22, Kathryn L. Cottingham23, Michael J. Crawley24,
Ellen I
Sporadic canine colorectal cancers (CRCs) should make excellent models for studying the corresponding human cancers. To molecularly characterize canine CRC, we investigated exonic sequence mutations of adenomatous polyposis coli (APC), the best known tumor suppressor gene of human CRC, in 23 sporadic canine colorectal tumors, including 8 adenomas and 15...
The Lower Alsea River Watershed Analysis contains information which characterizes the processes and trends for resources of concern, and provides a context relating the function of this lower portion of the watershed to the Alsea River Basin as a whole. Critical problem areas both inside and outside federal lands are...
Arrays of hydrophones were deployed within the Bransfield Strait and Scotia Sea (Antarctic Peninsula region) from 2005 to 2009 to record ambient ocean sound at frequencies of up to 125 and 500 Hz. Icequakes, which are broadband, short duration signals derived from fracturing of large free-floating icebergs, are a prominent...
The persistent underrepresentation and marginalization of women of color in the disciplines of science, technology, engineering, and mathematics (STEM) are well-documented. However, much of the existing literature takes an “either/or” approach, focusing solely on the experiences of either “women” or “minorities” in STEM, without adequately examining the unique experiences of...
Amino sugars in fungal cell walls (such as chitin) represent an important source of nitrogen (N) in many forest soil ecosystems. Despite the importance of this material in soil nitrogen cycling, comparatively little is known about abiotic and biotic controls on and the timescale of its turnover. Part of the...
Understanding controls over the distribution of soil bacteria is a fundamental Understanding controls over the distribution of soil bacteria is a fundamental step toward describing soil ecosystems, understanding their functional capabilities, and predicting their responses to environmental change. This study investigated the controls on the biomass, species richness, and community...
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 Republic of Kiribati is one of the last countries to face the HIV/AIDS epidemic in the Pacific. First appearing in the region in 1982, HIV/AIDS was recognized as a national concern during the late 90s. Partnering with the National AIDS Committee, research was conducted using qualitative and quantitative methods...
In horticultural nurseries for container-grown plants, production and sales have been threatened by the presence of a quarantined plant pathogen, Phytophthora ramorum (causal agent of sudden oak death). Infested nursery beds are an important source of P. ramorum, which can initiate disease through movement with surface water to infect roots...
In the months preceding the 2016 presidential election and during the Trump presidency, rhetoric, composition, and communications scholars expressed an urgent concern about the threat that Trump and his political affiliates posed to the status of truth in political life (McComiskey; Rice; Harsin; Cloud). However, the conversations surrounding the discipline’s...
A spectrum-matching and look-up-table (LUT) methodology has been developed and evaluated to extract environmental information from remotely sensed hyperspectral imagery. The LUT methodology works as follows. First, a database of remote-sensing reflectance (R[subscript]rs) spectra corresponding to various water depths, bottom reflectance spectra, and water-column inherent optical properties (IOPs) is constructed...
All life depends on the reliable translation of RNA to protein according to complex interactions between translation machinery and RNA sequence features. While ribosomal occupancy and codon frequencies vary across coding regions, well-established metrics for computing coding potential of RNA do not capture such positional dependence. Here, we investigate position-dependent...
Escherichia coli 16S-like ribosomal RNAs from
eubacterial, archaebacterial and eukaryotic organisms have
several universally conserved sequence zones which are
proposed to be single-stranded. A clear function for all
of these regions has not yet been defined. To evaluate the
roles of these sequence zones in protein synthesis,
knowledge of their...
Recently, an interest in supplementation of vitamin D to improve aspects of health, especially in human fertility, has emerged. However, supplementation of Vitamin D above the minimum required levels to prevent deficiency has yet to be explored in cattle despite evidence for vitamin D receptors in reproductive tissues. The objective...
Hydrographic measurements, made with CTD and STD probes in the
vicinity of Cabo Corveiro, NW Africa during the JOINT-I experiment in
Spring 1974, are presented. Computer plots of the vertical profiles of
temperature, salinity, and sigma-t are shown for each hydrographic station.
Associated values of temperature, salinity, sigma-t, specific volume...
This dissertation is separated into two parts according to the two major distinct research projects. In Part I, the full account of synthetic studies toward C10-functionalized lycopodium alkaloids is described. In Part II, the detailed discussion on the exploration of the Pummerer cyclization methodology and its application to the total...
Pan et al. claim that our results actually support a strong linear positive relationship between productivity and richness, whereas Fridley et al. contend that the data support a strong humped relationship. These responses illustrate how preoccupation with bivariate patterns distracts from a deeper understanding of the multivariate mechanisms that control...
Studies of experimental grassland communities¹⁻⁷ have demonstrated
that plant diversity can stabilize productivity through species
asynchrony, in which decreases in the biomass of some species
are compensated for by increases in others[superscript 1,2]. However, it remains
unknown whether these findings are relevant to natural ecosystems,
especially those for which species...
The aerodynamic temperature is required for prediction of the surface heat flux using Monin-Obukhov similarity. This "fictitious" temperature is not systematically equal to the actual air temperature near the surface and is not directly available from observations or in numerical models. The aerodynamic temperature is normally replaced with either the...
Based on regional-scale studies, aboveground production and litter decomposition are thought to positively covary, because they are driven by shared biotic and climatic factors. Until now we have been unable to test whether production and decomposition are generally coupled across climatically dissimilar regions, because we lacked replicated data collected within...
Published June 1955. 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
Human alterations to nutrient cycles[superscript 1,2] and herbivore communities³⁻⁷
are affecting global biodiversity dramatically². Ecological theory predicts
these changes should be strongly counteractive: nutrient addition
drives plant species loss through intensified competition for
light, whereas herbivores prevent competitive exclusion by increasing
ground-level light, particularly in productive systems[superscript 8,9]. Here we...
Exotic species dominate many communities; however the functional significance of species’ biogeographic origin remains highly contentious. This debate is fuelled in part by the lack of globally replicated, systematic data assessing the relationship between species provenance, function and response to perturbations. We examined the abundance of native and exotic plant...
Published January 1943. 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 June 1915. 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
Invasions have increased the size of regional species pools, but are typically assumed to reduce native diversity.
However, global-scale tests of this assumption have been elusive because of the focus on exotic species richness,
rather than relative abundance. This is problematic because low invader richness can indicate invasion resistance by...
Full Text:
X
X
Pedro Daleo
X
Ellen I. Damschen
X
Carla M Dantonio
X X
Invasions have increased the size of regional species pools, but are typically assumed to reduce native diversity.
However, global-scale tests of this assumption have been elusive because of the focus on exotic species richness,
rather than relative abundance. This is problematic because low invader richness can indicate invasion resistance by...
Full Text:
dominance the real embarrassment of richness?
ER IC W . SEABLOOM1 , EL I ZABETH T . BORER 1 , YVONNE BUCKLEY
Invasions have increased the size of regional species pools, but are typically assumed to reduce native diversity. However, global-scale tests of this assumption have been elusive because of the focus on exotic species richness, rather than relative abundance. This is problematic because low invader richness can indicate invasion resistance by...
The role of community colleges as open-access institutions that bring racial diversity to careers in the science, technology, engineering, and mathematics (STEM) fields is essential (Musante, 2012; Reyes, 2011). Yet, the opportunity to attend postsecondary institutions is not enough to guarantee the success of People of Color as they navigate...
Information on land cover at global and continental scales is critical for addressing a range of ecological, socioeconomic and policy questions. Global land cover maps have evolved rapidly in the last decade, but efforts to evaluate map uncertainties have been limited, especially in remote areas like Northern Eurasia. Northern Eurasia...
The rapid disruption of tropical forests probably imperils global biodiversity more than any other contemporary phenomenon¹⁻³. With deforestation advancing quickly, protected areas are increasingly becoming final refuges for threatened species and natural ecosystem processes. However, many protected areas in the tropics are themselves vulnerable to human encroachment and other environmental...
Successful reforestation of your harvested timberland is more than just
planting a few trees and hoping they will grow. To ensure success,
you first must answer several key questions:
• What species should I plant?
• What kind of seedlings should I select?
• How can I tell whether their...
My thesis examines a total of fourteen characters from The Portrait of a Lady and The Turn of the Screw. Primarily, I have discovered an overwhelming pattern in these two works by Henry James; when characters make direct entrances--that is when they are not described or discussed in absentia by...
One of the motives of China's Economic Reform is to bring Western
management techniques to China to further economic development. The miraculous
success of the Special Economic Zone (SEZ) in Shenzhen, Guangdong has attracted
many foreign investors who gladly bring their management expertise. This thesis looks
at small, medium and...
The National Pygmy Goat Association is a hobby livestock organization founded in 1975. Over the past five decades, it has grown in size and importance, occupying a niche role as the primary breed registry and certification authority for the smallest domestic ruminant. This history attempts to capture the scope of...
This index provides access to infonnation about women in 102 books and journals. The information contained in each entry is only as good as the original and the quality varies considerably. Much of this infonnation has not before been easily accesible in this form. My hope is that this index...
This thesis uses a series of non-fiction vignettes to explore objects, agencies, and networks, applying theories of rhetoric and composition directly to experience and vise versa. Focusing on agency--as understood through sociology's actor-networks, post- humanism’s Object Orientated Ontology, and Ecocriticism's ecological approach--I look at events, landscapes, and partnerships that have...
The vast majority of terrestrial plant species live in symbiosis with arbuscular mycorrhizal fungi (AMF). AMF and plants live in complex networks, with roots of individual plants hosting multiple AMF, and single AMF colonizing multiple plants concurrently. Through the exchange of resources, the two partners of this symbiosis can have...
Severe wildfires are increasing in the western United States, impacting vegetation structure, and in turn, forest regeneration conditions. These wildfires are also raising a substantial amount of scientific and management concern regarding the resilience of forested ecosystems, or the ability of the ecosystem to return to a pre-fire condition. This...
On January 21, 2017, the United States bore witness to the largest single-day demonstration in history—the Women’s March. This mixed methods study uses a combination of quantitative and qualitative data in an attempt to predict participation in this infamous protest. I divulge the ways in which the 2017 Women’s March...
This thesis undertakes an examination of Margaret Atwood’s 1985 novel, The Handmaid’s Tale, as a layering of genres. A futuristic dystopia that imagines late twentieth-century America as having fallen into neo-Puritanism and totalitarianism following widespread infertility and violence, The Handmaid’s Tale invites contemplation of various forms of fundamentalism, radicalism, and...
This thesis explores the artistic imperatives and internal struggles of women painters in two novels, Kate Chopin's The Awakening (1899) and Virginia Woolf's To the Lighthouse (1927). I identify Chopin's Edna Pontellier and Woolf’s Lily Briscoe as painters who exhibit Impressionist strains, both in how they paint and how they...
I analyzed the relationship between avian abundance and landscape structure at five spatial resolutions for 30 subbasins in the central Oregon Coast Range using remotely sensed data and a geographic information system (GIS). I developed maps of forest successional stages from Landsat Thematic Mapper (TM) data at a spatial resolution...