The nearshore waters off the Oregon coast (< 73 meters) are a region of high productivity and economic value, with a variety of habitats that include rock outcrops. Temperate reef habitats are important to many commercially important fishes inhabiting the Pacific coast, including canary rockfish (Sebastes pinniger) and yelloweye rockfish...
Electron behavior in semiconductor materials critically determines electronic applications. Previous research has shown carrier temperature higher than the lattice temperature of LEDs due to energy differences in the quantum well. Study of these findings requires a novel set-up to dig out weak signal in a thermal-noise filled environment; analytical methods...
Published March 1952. 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 feasibility of using a post harvest sampling time for
fruit testing in Anjou pears was evaluated. The goal was to
determine if a simple and rapid analysis of fruit tissues could be
useful in identifying potentially weak fruit that could be
marketed before the onset of the storage disorder...
Persistent organochlorines (OCs) bioaccumulate in aquatic biota and potentially impair reproduction via endocrine disruption. The present research evaluated estrogenic effects of the OCs, chlordecone (CD) and o,p'-DDT/DDE, and the antiestrogenicity of 3,4,5,3',4',5'-hexachlorobiphenyl (345-HCB) in juvenile rainbow trout, utilizing vitellogenesis as a biomarker. Vitellogenesis, estrogen regulated hepatic production of the yolk...
Published 1948? 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
Nitrogen, phosphorus and sulfur concentrations were measured in the soil, foliage and litter of Douglas-fir growing in pure Douglas-fir and mixed conifer stands. On four sites of contrasting fertility and climatic conditions, plots had been modified by the introduction of alder, thinning, or by a single application of nitrogen fertilizer...
The subfamily Aphrodinae is represented in the Nearctic Region by eight species contained in a single tribe, Aphrodini, and genus Aphrodes. The external and internal morphology, biology and ecology of the Nearctic members of the genus Aphrodes were investigated. Distributional evidence indicates that six of the eight species, belonging to...
Using the hydrographic data collected by the ACONA from June
1961 to May 1963, the Oregon coastal front has been examined. Representative
sigma-t surfaces were chosen to delineate the front, and
changes in position of these surfaces with time were used to obtain
zonal flow rates for the frontal and...
The epidermis of the brook lamprey, Lampetra planers
(Bloch), has been examined with histological and histochemical
techniques and the fine structure of the fibrillar
club cells has been studied with electron microscopy.
In histological structure the epidermis was found to
correspond to the observations of earlier workers. The
stratified epidermis...
Major and minor minerals have been separated from
three L-6 chondritic meteorites (Alfianello, Colby (Wisconsin),
and Leedey). Olivine, hypersthene, diopside, feldspar,
troilite, chromite, phosphate minerals, and metallic
minerals were analyzed for major, minor and trace elements
using instrumental neutron activation analysis and radiochemical
neutron activation analysis techniques. Concentrations
df the...
Published January 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
Coded metrics that compare representations of structures within the human body to evaluate their similarity are considered useful for planning radiation therapy on cancer targets. However, existing metrics fail to take into account the dose of radiation that will be received by both the target, and surrounding non-target tissue, during...
A new x-ray source capable of operating at up to 80
watts has been designed and developed, and put to use with
the Oregon State University Cylindrical Electrostatic
Analyzer. The new source produces over four times the
photoelectron intensity of its predecessor, from gaseous
samples, and accommodates a wider selection...
A long and gradual transition between the summer and winter
oceanic regimes was observed off Oregon during the autumn of 1980.
Hydrographic sections and a single current meter mooring between
August and December show the ocean possessed characteristics during
fall that have not been observed during other seasons: a slow...
Twenty-seven male college football linemen from the Oregon State
University football team served as subjects for the study to determine
which variables in strength and power would be best suited for use in
regression analysis with tibial nerve conduction velocity (TNCV). The
purpose of the investigation was to determine whether...
Although much has been written describing the
various reactions to the origin of Species in America, the Mormon reaction to Darwinism has been largely ignored. This dissertation will recount the history of this reaction as exemplified by the life and works of B. H. Roberts. Roberts's intellectual pursuits early in...
The importance of automobile exhaust as a source of atmospheric pollutants has been recognized for several years. With the
control of stationary sources in geographic areas such as Los
Angeles County, the automobile has become the major uncontrolled
source of air pollution.
The three major pollutants emitted by automobiles are...
A nonflame method for atomic absorption spectroscopy is
described. A helical tungsten filament from a commercially available
6-V, 4-A light bulb, heated to :incandescence in an argon atmosphere
is used to atomize 2-μl aqueous samples for metals analyses. Studies
of two hollow cathode lamp tungsten filament orientations, a
modulated light...
This study was designed to discover how beneficiary participation in decision making can be encouraged and enhanced in rural development assistance projects in developing countries. The study sought to increase the understanding about how beneficiary participation occurs through the identification of patterns, processes or techniques in development assistance projects that...
Tacrolimus is an immunosuppressant drug approved by the FDA for the prevention of organ transplant rejection. However, the use of this drug is hindered by its narrow therapeutic window and extreme insolubility in water. Due to these properties, the currently used tacrolimus preparations must be administered once or twice daily...
Reinforcement learning has made impressive strides in solving problems in challenging domains, but problems are increasingly being described with sparse rewards. Sparse rewards directly reduce the rate at which useful feedback is provided to the learner and make it difficult to distinguish between what specific actions led to the reception...
We explore the interactions between charge transfer exciton states (CTEs) and an optical microcavity by testing the effects that cavity resonance has on the CTEs and if CTEs can be coupled with a photon to create quasiparticles known as polaritons. Exciton polaritonics is becoming a booming area of research mainly...
When decision makers work collaboratively, their combined performance can exceed the performance of even the best group member working alone. However, despite the potential for performance gains when working in a group, collaborating individuals often show poor coordination and losses of motivation, and are generally inefficient at combining their resources...
Electrochemical sensing provides a quantitative alternative to colorimetric reactions within paper-based devices. The paper-based devices were fabricated by screen printing the conductive and reference inks onto porous substrates that were evaluated using cyclic voltammetry. Devices were evaluated based on the magnitude of the average anodic peak height, which correlates with...
Automated systems have become increasingly important to human decision making and task performance in a wide variety of complex fields and situations. Decision aids, a specific form of automation, assist human operators in making complex decisions under conditions of uncertainty, such as air traffic control or combat identification. When humans...
The FOCUS (Forest, Organisms, Creeks yoU Study) field trip program was developed to provide elementary students in Benton County, Oregon with a hands-on, environmental education experience at Beazell Memorial Forest. Students participated in activities dedicated to specific habitats and organisms found at Beazell that built upon their learning at school....
Human alteration of natural landscapes leads to biodiversity loss, often from a combination of area effects and fragmentation effects. Smaller habitat patches support fewer species than large ones and incur additional consequences from isolation. Efforts to preempt biodiversity loss from insular habitat fragments are complicated by individualistic species responses and...
Birds perform valuable ecological functions and are useful environmental indicators. Avian distributions and diversity are predicted to change over the next 50 years. Little information exists on the role of local and regional conditions in fluctuations of avian communities over time. Historic datasets present a legacy of information that helps...
The circular dichroism spectra of amylose, the maltose
oligomers, cellobiose, and the cycloamyloses are measured in
aqueous solution to 1640 A. Two bands are found in this region. The
long wavelength band is assigned to the ether chromophores; the short
wavelength band is assigned to the hydroxyls and further ether...
A simple matrix method for the analysis of protein circular dichroism (CD) spectra is presented and used to compute the secondary structure of globular proteins in their native and denatured states. The method uses singular value decomposition and generalized inverse algorithms, and a basis set of CD spectra for proteins...
Vacuum ultraviolet absorption spectra of 13 model sugar compounds
were measured in the energy range of 50 to 80 kK. The model
sugars included three simple alcohols, four simple ethers, four cyclic
alcohol-ether compounds, and two dioxanes. All spectra show
transition bands in the energy region 50 to 65 kK....
A sophisticated computer program is developed to analyze flow linear
dichroism data on nucleic acids for individual base inclinations. Measured
absorption and linear dichroism data for synthetic AT and GC polymers and
natural DNAs are analyzed. The reliability of the program is tested on data for
the synthetic polymers, and...
The association of hyaluronic acid (HA) into a double stranded
structure has been investigated by circular dichroism (CD)
spectroscopy into the vacuum ultraviolet region. The CD of HA changes
dramatically, monitoring a cooperative transition as the dielectric
constant of an aqueous solution is reduced by adding organic solvents.
This structural...
Independent systems theory has been used to interpret the
circular dichroism (CD) spectra in the vacuum uv of three cyclic
dimers of amino acids. First, the theory for rotational strengths is
developed in terms of degenerate and nondegenerate group functions.
All terms to first order in perturbation theory are kept....
Work is presented which explores the properties and nature of
the P-form of DNA. Initially the P-form represented an unknown
state of DNA which occurred when this molecule was in a solvent of
47.5% methanol, 5% water, and 47.5% ethanol, and which showed properties
of both native and denatured conformations....
Eight layered gabbro samples from two layered complexes, two
xenoliths, one basalt from a hot brine area and a standard basalt rock
(BCR-1) were analyzed by RNAA (radiochemical neutron activation
analysis) for 14 trace elements, Au, Ni, Co, Ag, Sb, Se, Zn, In, T1,
Rb, Cs, U, Ba and Sr....
Program comprehension is important in program testing, debugging, and maintenance. Programming style impacts program understanding. However, there has not been any systematic identification of individual style factors and their contribution to program comprehension. In this thesis we present a programming style taxonomy composed of three classes: typographic (program layout and...
The Emigrant Pass volcanics (EPV) are a 38.3 to 36.4 Ma calc-alkaline volcanic center that erupted andesite and dacite, and a late series of felsic dikes along the south flank of the Carlin gold district in north-central Nevada. The EPV includes dacite and rhyolite porphyry dikes indistinguishable from porphyry dikes...
The objective of our study was to investigate the effect of selenium on
selenoprotein W. Western blot analysis indicated that selenoprotein W is present in
muscle, brain, testis and spleen of rat tissues. Tissue distribution of selenoprotein W
was not altered in rats fed various selenium levels. Among muscle, brain,...
A new system called sequential/parallel matrix grammars
for two-dimensional pattern processing is introduced and studied.
Miscellaneous language operations such as union, catenation (row
and column), Kleene's closure (row and column) and substitutions
are investigated. The equivalence of sequential/parallel matrix
languages and finite-turn repetitive checking automata is established.
Hierarchies for both...
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...
Windows Exploratory Testing (WET) is examined to determine whether testers working in pairs produce higher quality results, are more productive, or exhibit greater confidence and job satisfaction than testers working alone. WET is a form of application testing where a tester (or testers) explores an unknown application to determine the...
Accreditation Board for Engineering and Technology, Inc. (ABET) is the primary organization responsible for monitoring, evaluating and certifying the quality of engineering, engineering technology, computing and applied sciences education in the United States. In 2000, ABET changed the way computer science (and engineering) programs are accredited from a ‘checklist’ approach...
Rat selenoprotein W (SeW) promoter activity was investigated using different concentrations of cadmium, copper, and zinc. Two fragments (404bp and 1265bp) of the SeW promoter, containing a single metal response element (MRE), were ligated into the multiple cloning site of a pGL3-Basic reporter plasmid. The constructs were transfected into cultured...
The extent of biological invasions, their role on the feeding of
native fishes and their impact on community stability were
investigated in Alsea Bay and Yaquina Bay, two estuaries on the
central Oregon coast, USA. Most nonindigenous species (NIS)
introduced in these intermediately invaded estuaries are
considered byproducts of culturing...
When changes are made to programs - to enhance their functionality, to improve performance, to migrate from one language or machine to another, or to convert a serial program to parallel form - there is no easy way to verify that the changes maintain program correctness. Checking the final result...
Context-free grammars with graph control provide a general framework for the various types of context-free grammars with regulated rewriting. The vertices or edges of the directed graph are labeled with the productions of the grammar. The only strings in the language generated by the grammar are those whose derivations correspond...
This project determines the short term and long term effective stiffness values for Cross Laminated Timber (CLT) with a reinforced concrete topping. The reinforced concrete was attached to the CLT panels with interface connections, and different types of interface connections were tested. Throughout this project, there are 31 tests with...
The gills of an Oregon crayfish, Pacifastacus leniusculus Dana,
were examined with histological and histochemical techniques and
their fine structure was investigated by electron microscopy. Special
attention was given to the structural basis of active ion uptake.
The histology of these gills was the same as that of other crayfish...
The use of cover crops in young vineyards is not widely accepted in the Pacific Northwest due to concerns of water and nutrient competition between the cover crop and vines. The last 2 years of a 4-year study started in 2009 are reported here. The study evaluated the use of...
Improving the methods used for the detection and estimation of fissile material mass content is essential to nuclear security and safeguards to ensure special nuclear material (SNM) accountability, control, safety and security. With the continued expansion of the nuclear industry and the need for safe management of spent fuel, improving...
Recently concerns over anthropogenic carbon pollution have received increased global attention and research in forest biomass and carbon sequestration has gained momentum. Light Detection and Ranging (LiDAR) remote sensing has in the last decade demonstrated forest measurement and biomass estimation potential. The project objective was to compare LiDAR forest biomass...
An approach to the generation of polyketides was investigated,
which involved ozonolysis of 6, 7 cyclopenteno -1> 4, 5, 8 -tetrahydromethoxy-
3-methylnaphthalene (26), to produce what is believed to be
polyketide 27. Compound 26 was formed by the following sequence:
Die ls -Alder addition of 1, 2 -dim.ethylenecyclopentane and 2...
Production of the host selective toxin victorin is causal to pathogenesis of Cochliobolus victoriae on oats. The dominant Vb gene confers oat sensitivity to victorin, and is genetically inseparable from Pc2, which confers resistance to Puccinia coronata f. sp. avena. Victorin induces apoptotic-like cell death, and cell death is a...
Recently several simply computed graph theoretic measures of computer program complexity, testing and unstructuredness have been proposed. Most of them are based on a static analysis of the program graph. One of the best known and most widely accepted is the cyclomatic number. Another is the number of knots, or...
Birds perform valuable ecological functions and are useful environmental indicators. Avian distributions and diversity are predicted to change over the next 50 years. Little information exists on the role of local and regional conditions in fluctuations of avian communities over time. Historic datasets present a legacy of information that helps...
Full Text:
, Oregon
AN ABSTRACT OF THE THESIS OF
Jenna Curtis for the degree of Master of Science in
The purpose of this research was to evaluate a web-based training program for mentors of distance graduate students enrolled in a distance Master of Science Dietetic Management Program. The online training program was designed to consist of four modules focusing on mentoring skills, communication, research methods and university mandated guidelines...
Following thermal neutron induced fission, supervised machine learning and temporal gamma-ray spectroscopy methods were used to identify differences in the delayed gamma-ray spectra of Pu-239 and U-235. The temporal gamma-ray spectroscopy method takes advantage of the time-dependent decay of fission products. Employing Spearman's rank-order correlation coefficient and without prior knowledge...
The digital revolution has brought information to every corner of our daily lives. Inexpensive and flexible integrated circuits are needed for this continuing revolution. Silicon technology, the current workhorse of microelectronic industry, is far from inexpensive and flexible. Researchers are taking several different routes to achieve this goal. Amorphous silicon...
This thesis describes a Truck Performance Simulation Model developed
for use in a United States Department of Transportation university
research project entitled "The Energy, Economic and Environmental
Consequences of Increased Vehicle Size and Weight." The performance
of the truck is found by specifying its engine, driveline and tire
characteristics and...
The central purpose of this study was to formulate and test a
model for securing information from the ornamental horticultural
industry that would provide a basis for curriculum development in
vocational agriculture. In order to develop the model, it was necessary
to accomplish the following:
1. Determine typical occupations in...
Multiple linear regression was used to develop equations for 12-,
24-, and 36-hour surface wind forecasts for the wind energy site at
Goodnoe Hills. Equations were derived separately for warm and cool
seasons. The potential predictors included LFM II model output, MOS
surface wind forecasts extrapolated from surrounding stations, pressure...
This paper describes the analysis of data from a three-year gross time study of skyline, balloon, and helicopter yarding systems operating in Western Oregon. Data collection activities were designed and supervised by the Pacific Northwest Forest and Range Experiment Station, U.S.D.A. Forest Service. The specific logging systems studied were running...
The primary purpose of this study was to test the
conventional view of job factors as satisfiers and
dissatisfiers of members of the National Association of
Directors of Christian Education. The conventional view
stated that all job factors can potentially contribute to
job satisfaction and to job dissatisfaction. A second...
The increasing costs of labor and food accompanied by limited
budgets are some of the problems facing the school foodservice director.
A plausible solution for cost increases is more efficient
use of time. The purpose of this research is to develop a method to
determine the time spent in common...
The California vernal pool-endemic grasses Orcuttia tenuis and Tuctoria greenei, both listed under the U.S. Endangered Species Act, were recently found in Modoc County, California, a short distance south of the Oregon border. This prompted searches in suitable habitats in adjacent portions of the Klamath Basin in Oregon, in the...
Selenoprotein W (SeW) is a protein whose function is unknown, but potentially plays a vital role in calcium metabolism, as an indirect link has been established with white muscle disease (WMD). White muscle disease occurs in selenium deficient animals, and is characterized by the precipitation of calcium in muscle, leading...
Published October 1949. 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
Pesticides are among the most pervasive environmental contaminants and they are an important potential risk for human health. Agricultural workers are constantly exposed to pesticide spray, drift and residues in the soil and foliage. Many agricultural pesticides are readily absorbed by the body, through contact with the skin, the respiratory...
Polycyclic aromatic hydrocarbons (PAHs) are significant pollutants in aquatic environments. Many are carcinogenic and lead to DNA fragmentation and adduct formation in marine and freshwater organisms. Previous research demonstrates that rainbow trout (Oncorhynchus mykiss) compensate to long-term PAH dietary exposures and reduce the DNA damage.
The aim of this study...
In this thesis we introduce alpha and beta tree acceptors,
generalizations of tree automata. The alpha tree acceptors recognize
a tree by final symbol and the beta tree acceptors by final state. We
show that alpha and beta tree acceptors recognize the same sets of
Gorn trees and demonstrate that...