The Artemisia ludoviciana polyploid complex is a highly polymorphic
assembledge of eight taxa in the Pacific Northwest, with a
chromosome base number of x=9. A cytogenetic analysis of this
complex was carried out to determine the sources of its variation,
the types of polyploidy present, and the genetic processes active...
An adequate stand at the optimum time is an important factor
affecting potential yield and soil erosion control. However, obtaining
adequate stands of fall planted winter wheat in the dryland areas of the
Pacific Northwest is often complicated by marginal seed zone soil
moisture. The purpose of this laboratory study...
Studies of consumer-resource interactions suggest that individual diet specialisation is empirically widespread and theoretically important to the organisation and dynamics of populations and communities. We used weighted networks to analyze the resource use by sea otters, testing three alternative models for how individual diet specialisation may arise. As expected, individual...
BACKGROUND: The oxidative stress theory of life-history tradeoffs states that oxidative stress caused by damaging
free radicals directly underpins tradeoffs between reproduction and longevity by altering the allocation of energetic
resources between these tasks. We test this theory by characterizing the effects of exogenous oxidative insult and
its interaction with...
BACKGROUND: The oxidative stress theory of life-history tradeoffs states that oxidative stress caused by damaging
free radicals directly underpins tradeoffs between reproduction and longevity by altering the allocation of energetic
resources between these tasks. We test this theory by characterizing the effects of exogenous oxidative insult and
its interaction with...
Full Text:
Smith, S. W., Latta, L. C., Denver, D. R., & Estes, S. (2014). Endogenous ROS
levels in C. elegans
BACKGROUND: The oxidative stress theory of life-history tradeoffs states that oxidative stress caused by damaging free radicals directly underpins tradeoffs between reproduction and longevity by altering the allocation of energetic resources between these tasks. We test this theory by characterizing the effects of exogenous oxidative insult and its interaction with...
In We have analyzed natural variation in mitochondrial form and function among a set of Caenorhabditis briggsae isolates known to harbor mitochondrial DNA structural variation in the form of a heteroplasmic nad5 gene deletion (nad5 Delta) that correlates negatively with organismal fitness. We performed in vivo quantification of 24 mitochondrial...
Published April 1942. 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 April 1941. 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 April 1941. 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 March 1939. 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 May 1938. 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 March 1938. 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 August 1964. 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 1945. 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
The purpose of this project was to create a code generating software tool, which is one section of the Oregon SpeedCode Universe. The Code Generator automatically generates compilable source code to form working Macintosh applications. This source code provides a prototype for the actual final application. This is done with...
We explored the relationship between relaxed selection, oxidative stress, and spontaneous mutation in a set of mutation-accumulation (MA) lines of the nematode Caenorhabditis elegans and in their common ancestor. We measured steady-state levels of free radicals and oxidatively damaged guanosine nucleosides in the somatic tissues of five MA lines for...
Selfish DNA poses a significant challenge to genome stability and organismal fitness in diverse eukaryotic lineages. Although selfish mitochondrial DNA (mtDNA) has known associations with cytoplasmic male sterility in numerous gynodioecious plant species and is manifested as petite mutants in experimental yeast lab populations, examples of selfish mtDNA in animals...
Published June 1939. 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
Tabletop role-playing games (TRPG) such as Dungeons & Dragons™ are widely known and enjoyed by diverse individuals across the world. However, TRPGs and their players historically have experienced significant stigmatization due to the misconception by some that fantasy role play leads to psychological dysfunction. While a large body of research...
Anthropogenic climate change is an escalating environmental and humanitarian emergency, but American public opinion varies on the issue, particularly in terms of whether climate change is natural or human caused. Belief that climate change is human caused has been shown to be critical in terms of support for policy action....
The accessions used to create the Snap Bean Diversity Panel were 150 snap bean (Phaseolus vulgaris) cultivars and breeding lines selected from North American and European germplasm to create a population that is representative of the snap bean market class from a historical and geographical viewpoint. This panel was developed...
Processors need broccoli with better quality traits than what is available in cultivars developed for California and Mexico fresh markets. Farmers need to reduce labor costs of broccoli production by mechanizing harvest. Most contemporary commercially available cultivars are not suitable for either mechanical harvest or processing. The objective of the...
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 development of several sub-fields of general economics, including those of bounded rationality, institutional economics and the evolutionary economics, has expanded the scope and intensity of the dialogue both within economics, as well as between economists and other scientists. One of the more important preoccupations of early evolutionary economics was...
Recent literature on trade in fisheries products and in factors of production for fishing can be used to ask when it might be welfare increasing to encourage government financial transfers (GFTs) in the fisheries. Using numerical techniques and assuming a small open one factor 2 good economy with production inefficiencies...
The Purpose: The purpose of this study is to develop an original validated Lickert-type attitudinal survey instrument and administer it to selected samples of teachers and students in the Mid-Willamette Valley of Oregon to determine their attitude toward the "purposes," "functions," and "responsibilities" of student councils and place these results...
Biological attributes and alteration of the habitat of Labops
hesperius Uhler were investigated on rangeland seeded to crested
wheatgrass near Vale, Oregon, and on rangeland seeded to crested
and intermediate wheatgrass near Seneca, Oregon. Nymphs and
adults were present at Vale from late March until mid-June and at
Seneca from...
This research emphasized fundamental physical and electrochemical
studies of systems based on the room temperature fused salt, triethyl-ammonium
dichlorocuprate(I). Such systems, which must be maintained
under a protective atmosphere, were also used in some preliminary
battery studies.
Spectra of dark green solutions of copper (II) chloride in
triethylammonium dichlorocuprate(I) obey...
We present the results of our experiments designed to extend the clinical applications of commercially available Optically Stimulated Luminescence (OSL) Dosimeters. Our initial experiments demonstrate the linear response of the OSL dosimeters for doses under 200 cGy and the non-linear response of the device after 200 cGy. Our experiments show...
Field experiments were done to test the relative
effectiveness of single and multiple biological control
agents in reducing weed populations using two insects, the
cinnabar moth, Tvria iacobaeae (L.), and the ragwort flea
beetle, Lonqitarsus iacobaeae (Waterhouse). These two
insects were released for biological control of the biennial weed tansy...
Previous research in program understanding has been hampered by the
lack of an easy tool to measure the degree of that understanding. The cloze
procedure, suggested by Cook, Bregar, and Foote (1984) was an attempt to find
a simple, reliable, and valid measure of program understanding. In this
procedure, tokens...
More Americans are participating in sport every year
and several organizations have made it their mission to
provide the opportunity for organized sport participation.
College and University intramural departments are one of
those organizations. They provide participation
opportunities on nearly every college campus. The review of
literature identifies the sociological...
This report describes the isolation of a new virus from adult
chum salmon (Oncorhynchus keta) returning to the Tokushibetsu Hatchery,
Hokkaido, Japan. The agent was isolated in the CHSE-214 cell line
derived from chinook salmon (Oncorhynchus tshawytscha). The virus
replicated in selected fish cell lines incubated between 10 and 20°C...
Soil, water, and climatic classification systems are reviewed as
background for the construction of a classification system for earthen
aquaculture ponds. The physical and chemical properties of important
soil types are also reviewed because of the critical role that the
soil plays in earthen pond systems. A pond classification system...
Beetle diversity and habitat associations of five
prevalent riparian plant communities were examined along
the lower reaches of Big Beaver Creek Research Natural
Area, North Cascades National Park, Washington. These
communities were defined by dominant tree species, and
included Alder Swamps, Cedar-Hemlock Forests, Douglas-fir
Forests, Gravel Bars, and Willow-Sedge Swamps....
At a state university in the Pacific Northwest, the authors surveyed 477 matriculating college students about their immunization status, knowledge, self-perceived risk, and health risk behaviors for hepatitis A and B vaccinations. Review of immunization records revealed that 10% of these students were completely immunized for hepatitis A and 58.8%...
The acanthocephalan Echinorhynchus lageniformis Ekbaum,
1938, is a common intestinal parasite of the starry flounder, Platichthys
stellatus (Pallas), of Yaquina Bay, Lincoln Co., Oregon. Three
hundred and sixty-one flounders were examined and 146 (40.5 percent)
were found to harbor infections of E. lageniformis.
Cystacanths of E. lageniformis were found encysted...