Farewell-to-spring (Clarkia amoena) is native to the Pacific Northwest and commonly found in gardens, due to its aesthetic value and purported benefits to pollinators. Oregon and Washington are home to five subspecies of C. amoena, yet commercially available seed is limited to C. amoena ssp. lindleyi and C. amoena cultivars....
Bighorn sheep (Ovis canadensis) were not known to live on Tiburón Island, the largest island in the Gulf of California and
Mexico, prior to the surprisingly successful introduction of 20 individuals as a conservation measure in 1975. Today, a stable
island population of ~500 sheep supports limited big game hunting...
Full Text:
, JimI. Mead4,
Exequiel Ezcurra1,5
1 Department of Botany and Plant Sciences, University of
Bighorn sheep (Ovis canadensis) were not known to live on Tiburón Island, the largest island in the Gulf of California and
Mexico, prior to the surprisingly successful introduction of 20 individuals as a conservation measure in 1975. Today, a stable
island population of ~500 sheep supports limited big game hunting...
Bighorn sheep (Ovis canadensis) were not known to live on Tiburón Island, the largest island in the Gulf of California and
Mexico, prior to the surprisingly successful introduction of 20 individuals as a conservation measure in 1975. Today, a stable
island population of ~500 sheep supports limited big game hunting...
In this paper, I will analyze the nature of these
problems and examine how recent approaches to SLRA have
dealt with them. In addition, a framework for assessing the
potential impacts of sea level rise is proposed, drawing
upon the ecological concept of resilience (Holling 1978,
1984).
Populations of coastal cutthroat trout, Oncorhynchus clarki clarki, were sampled in 16 headwater streams from logged (20-30 and 40-60 years ago) and unlogged (stand age 125-150 years) basins. Basins logged 20-30 years ago supported the widest range of mean biomass of age 1+ or older cutthroat trout (g/m2) and the...
This thesis investigates the behavior of major inorganic nutrients (P, N, Si), trace metals (Mn, Fe), and alkaline-earth metals (Ba) within Tillamook Bay over seasonal cycles and under a range of river discharge conditions from October 1997 through December 1999. Located in the Pacific Northwest region, Tillamook Bay is an...
This paper focuses on the role of natural resources information in Oregon legislative
policy-making, based on the two legislative case studies from the 1991 Legislative Session,
surveys conducted of state natural resource agency legislative liaisons, and a review of
current literature addressing policy-making and the role of science in policy-making....
Oregon's estuaries have been significantly altered by human activity, so that many former tidal wetlands no longer provide the functions, such as fish and wildlife habitat, erosion protection from storms, and water quality maintenance, that preserve the integrity of estuarine ecosystems. Oregon has been a leader in wetland protection and...
Microscale fluid processes are an increasingly important subgroup of fluid mechanics. Applications for heat transfer and micro-electro-mechanical devices use flows on the scale of less than one hundred microns. This study is part of a larger work in which a multiphase, high shear environment is studied in a microchannel that...
The product of my internship was a working draft of a land use and master plan
for the SPC to review. The draft is to be used for creating a more comprehensive land use
and zoning master plan. Attempts were made to incorporate input from federal, state,
and local governments,...
Disease control is a crucial aspect of plant breeding for researchers as well as commercial producers. After samples from OSU's tomato breeding program tested positive for Columnea latent viroid in a screen done by a private company, secondary testing was done by the USDA laboratory in Corvallis which suggested that...
"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...
Coral reef ecosystems are the oceanic equivalent of tropical rainforests, in terms of biodiversity. The estimated 1,037,000 square kilometers worldwide of reef provide
habitat for over one million species of plants and animals (Hinrichsen, 1997). Coral reefs are important to the economy of coastal nations because of the fisheries and...
A programming paradigm can be defined as a model or an approach employed in solving a problem. The results of the research described in this document demonstrate that it is possible to unite several different programming paradigms into a single linguistic framework. The imperative, procedural, applicative, lambda-free, relational, logic and...
The coastal zone is the area where the land, sea, air meet.
It has a unique combination of characteristics which favor human
development, trade and industry.
"Coastal climates are more moderate and stable than those of
the interior of the continents, and are usually associated with
sufficient rainfall to sustain...
Forests are some of the most ecologically diverse and dense habitats on the planet. Research shows that the endophyte community, or the fungi, bacteria, and viruses within a forest ecosystem is highly diverse. Fungal endophytes are defined as fungi that live within the tissues of host plants. Relationships between fungal...
The influence of microwave radiation on the fabrication
of cermet materials has been investigated for alumina-titanium
cermets with compositions ranging from 20 to 80 wt. % titanium.
An industrial microwave oven was characterized and adapted to
process cermet materials. Physical and mechanical property
determinations were made as a function of...
Douglas-fir [Pseudotsuga menziesii (Mirbel) Franco] bark (DFB),
sphagnum peat moss, and pumice are the most common substrate components used
in the Oregon nursery industry. Despite the widespread use of these three
components, little information is available on the effect of physical and hydraulic
properties of peat moss and pumice on...
“A Monument to Jim Crow’: Post-War Racial Liberalism and the Battle Over the Booker T. Washington Black Veterans Hospital” examines the proposed Congressional bill to build a segregated black veterans hospital as a memorial to Booker T. Washington in Franklin County, Virginia. This paper examines the developing ideology of racial...
Surface sediment transport is an important geomorphic process which can be significantly altered by management activities in forested ecosystems. Disturbance of the soil surface may result in increased sediment delivery to fish bearing streams and degradation of soil structure. Selective thinning and low impact yarding techniques were utilized in an...
The topic of this study is the cultural impact of the computer in a school. "Impact" is 'defined as the cultural consequences of intended and unintended learning that occur when computers are used in the school. The major theoretical orientations of the work include the concepts of manifest and latent...
Policy regarding the management of public forests has undergone a drastic shift over the past couple of decades due to the loss old-growth forests in the Pacific Northwest (PNW) of the United States. For much of the 20th century, forest management on public lands emphasized timber production through the use...
Leda is a strongly typed, compiled, multiparadigm programming language. This paper describes various implementation concerns which arose from the experience of writing a Leda compiler as part of the Leda research team. These include aspects of run-time representation, symbol-table information, and code generation. The paper concentrates on objects and classes....
An oral vaccine was developed for control of vibriosis
in Pacific salmon. The vaccine consists of a lyophilized
sonicate of cells of Vibrio anguillarum, the causative
agent of this disease. The preparation was incorporated
into a ration and fed to salmon in fresh water before the
fish were transported and...
This paper presents data obtained from measurements of the X2 Interpreter. The measurements were made to determine how to Increase the Interpreter's efficiency. The subroutine call operation was found to consume a significant percent of the execution time.
Delay insensitive asynchronous circuitry provides significant advantages with
respect to substrate noise due to localized switching. The differences between the
substrate noise from NULL Convention Logic (NCL) and traditional Clocked
Boolean Logic (CBL) are described and analyzed based on measured results. A test chip fabricated in the TSMC 0.25 um...
Expanding groundfish production on the West Coast and in the
United States in total, over the past decade, has increased
competition in the groundfish market. During the same period,
regulations have evolved to control production in the groundfish
industry for the purpose of conserving the resource. Other
regulations exist to...
This report summarizes accomplishments of the McKenzie River Focus Watershed Council (MWC) in the areas of coordination and administration during Fiscal Year 2000. Coordination and administration consist of prioritization and planning for projects; project management and implementation; procurement of funding for long-term support of the Council; and watershed education/outreach program...
Response to heterosis for plant height, anthesis date, panicle
number, seed yield, and fall vigor rating was determined in a tall.
fescue group selected for diverse morphology, origin, and anthesis
date. Parents, single-cross progeny (SX), and first generation
selfed progeny (S₁) were included in the study.
Each experimental plot consisted...
A parametric manifold can be viewed as the manifold of orbits of a (regular) foliation of a manifold by means of a family of curves. If the foliation is hypersurface orthogonal, the parametric manifold is equivalent to the one‐parameter family of hypersurfaces orthogonal to the curves, each of which inherits...
The increasing popularity of catalog shopping has prompted many retailers to enter the market. Consequently, competition among catalog retailers has escalated. To maintain or expand their customer bases, catalog retailers must now find better ways to serve consumers. Many consumers are apprehensive to shop for apparel via catalog because they...
Apologia is a rhetorical genre of self-defense. As such, apologetic discourse
involves a response to an attack upon an individual's character or worth as a human being.
Los Angeles Police Detective Mark Fuhrman encountered such a attack during the 0.J.
Simpson murder trial. The purpose of this analysis is to...
During his lifetime C. S. Lewis chose to speak to Christians in plain and simple language that they could understand. Lewis taught and defended truths that he felt were discernible through reason. Morality, free will, and the divinity of Jesus Christ were fundamental to his core beliefs and teachings. His...
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...
Larix laricina in Alaska occurs on sites ranging from productive
slopes and riverbottoms to wet bogs underlain by permafrost. It is
largest on sites without permafrost, where it is associated with
Picea glauca, but is much more common in bogs, where it occurs with
Picea mariana. In this study, I...
There is a fundamental distortion in our understanding of Native people, especially Native women. This distortion is rooted in imperialism and the colonization of Native lands and has created a dominant/subordinate relationship between Non-Native/Native people. Anthropological life history research has traditionally reflected this relationship. As a Native woman, the author...
Poor material utilization is inherent to conventional manufacturing processes, leading to high material waste and machining times. Additive manufacturing processes attempt to solve this issue by allowing production of near-net shapes, but the processes may be too expensive or infeasible. By leveraging both processes in a single part, the waste...
This document defines the language Leda as currently implemented by the authors and Vinoo Cherian. Leda is an evolving research language and readers may wish to consult the bibliography for a variety of papers concerning its raison d'être. Our purpose here is to guide investigators in the use of a...
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...
From April 2009 to February 2010, coupons of materials which could be used in the rotor, drive train, or foundation of tidal energy devices were deployed in-situ on the seabed at a prospective tidal energy site to screen for biofouling and corrosion. Materials include glass and carbon fiber composites, stainless...
New Zealand’s $25M (USD) domestic tuna fishery comprises a troll fishery for albacore, a longline fishery for southern bluefin, Pacific bluefin, bigeye, yellowfin, and albacore tunas, and a small purse seine fishery for skipjack tuna. New Zealand vessels also fish for tuna in high seas areas and, through arrangements with...
Recent advancements in joining operations and additive manufacturing now allow complex metal parts to be built up from raw materials, as opposed to being machined down from solid blocks. This not only opens up the design space, but also allows for much more efficient manufacturing. By decomposing a complex part...
During catalysis the flavoprotein domain of neuronal nitric-oxide synthase (nNOS) shuttles NADPH-derived reducing equivalents from FAD to FMN and then to the P450-heme enabling heme-based oxygen activation and subsequent NO-synthesis. The binding of Ca²⁺-activated calmodulin (Ca²⁺-CaM) to nNOS alleviates inhibition of flavin mediated electron transfer within the diflavin domain, which...
Uses of travel time and mode of transportation in selected two-parent,
two-child Oregon households was researched in this study.
The relationship between a number of demographic characteristics
and amounts of travel time as well as mode of transportation was
also examined.
The study used the Oregon data from the Northeast...
Irrigated agricultural production in sandy soils presents several unique challenges to growers, including naturally high permeability, low native water retention, as well as high rates of water drainage losses and leaching of chemicals to the shallow aquifers. This study is an initial investigation into water motion in the sandy agricultural...
Relationships between moral judgment and cognitive reasoning
among 102 six-, nine-, and twelve- year -old boys and girls from predominantly
middle class backgrounds were studied. Findings obtained
supported Gutkin's (1972) formulation of a four stage approach toward
describing the transitional shift in children's moral judgments from
heteronomous to autonomous thought....
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...
Three DCMU resistant mutants of the green alga Scenedesmus
obliquus D₃ are characterized. The mutants exhibit a ten fold
greater resistance to DCMU than the wild type strain; this is
comparable to the level of DCMU resistance detected in other
DCMU resistant algae. In whole cell reactions, as well as...
This study examined children's memory for traditional and nontraditional
parental behaviors displayed in story content. Subjects
were 40 male and 40 female preschool children between the ages of 47
and 60 months. Children were read a story portraying a mother and a
father as the main characters. Each character performed...
In vivo generation of cytotoxic T cell activity
against alloantigen is suppressed by the aromatic
hydrocarbon (Ah) receptor binding 3,3',4,4',5,5'-
hexachlorobiphenyl isomer (HxCB). Previous studies in
this laboratory suggest that HxCB may alter early
event(s) in the activation of cytotoxic T lymphocytes
(CTL). Production of and response to interleukins 1...
PCR-based codon-specific random mutagenesis and site-specific mutagenesis were performed to construct a library of 18 amino acid changes at Arg276 in the conserved leucine-loop of the core catalytic domain of human uracil-DNA glycosylase (UNG). Each Arg276 mutant was then overproduced in E. coli cells and purified to apparent homogeneity by...
Approximately 600,000 individuals will be eventually released from the prison system and millions will be released from jails across the United States each year (Mukamal et al., 2015). Some of these individuals will make their way to a local community college to make a better life for themselves. There is...
The magnitude of the effect on decay heat of neutron
capture by fission products for hypothesized "worst case"
irradiations was examined. This effect is shown to be
small (less than 2 percent) for times less than 1,000
seconds and a simple model is presented for estimating
the magnitude of the...
The extent of agricultural drainage has created concern for its potential undesirable effects on surface water quality. Land applications of liquid manure on tile drain fields have the potential to transport solutes and bacteria to the drains following precipitation or irrigation events and many times are directly sent to a...
Throughout the world, weather-related and other natural phenomena claim thousands of lives and devour billions of dollars annually in recovery efforts. Destruction of life and property in the wake of disasters is devastating, and can have a dramatic impact on families and businesses around the globe. Yet, published works specifically...
This phenomenological study explores the effects that an interdisciplinary program of study at a community college has on students once they transfer to a four-year institution. Interdisciplinary approaches have been proposed as a way of meeting the complex thinking skills needed for 21st Century learning. Because interdisciplinary learning is complex,...
The purposes of this study were to find out about the associations between
hostile attributional bias and aggressive behaviors among preschool-aged children and
to identify possible sources of their hostile attributional bias. Seventy-two
preschoolers with an average age of 4.76 and their mothers acted as participants.
Children's hostile attributional bias...
The Seeds of Success (SOS) is a wildland seed collection program in support of the interagency Native Plant Materials Development Program (NPMP) and in partnership with the global conservation initiative, the Millennium Seed Bank Project of the Royal Botanic Gardens, Kew. SOS collections follow a set protocol with consideration for...
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...