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...
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...
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....
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...
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....
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...
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...
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....
Declines in Greater Sage-Grouse (Centrocercus urophasianus, hereafter sage-grouse) populations could be attributed to low chick survival, which may be influenced by the availability of food and cover at sites used by females rearing broods. Habitat attributes important to broods may vary regionally; thus, it is necessary to understand factors affecting...
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...
A study on the effects of light quality and periodicity on the germination of Douglas-fir seed and the growth of Douglas-fir seedlings was conducted. Interest was focused on responses that could be measured and observed without biochemical assay. It was found that .Douglas-fir seed,s would respond to red-light treatments by...
Hybrids with abnormal development were obtained when particular
genotypes of Phaseolus vulgaris L. were crossed. The phenotypic
aberrations of the F₁s included retarded growth, chlorosis of the
trifoliate leaves and the formation of adventitious roots on the
hypocotyls. The expression of the abnormalities was dependent on the
temperature. At high...
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...
L. C. Dunn (1893-1974) spent most of his scientific career conducting research in
developmental genetics as a member of the Zoology Department at Columbia
University in the City of New York. He had an accomplished scientific career
researching mutations in mice, which earned him respect from other geneticists and
scientists....
From my personal experiences, I’ve noticed that Latinx students and families are most receptive to college-related information communicated as anecdotes. Latinx students are among the most poorly represented demographic at universities nationwide, which I believe can be mitigated through calculated efforts to increase collegiate literacy and understanding. This project is...
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...
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...
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
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...
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...
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...
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...
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 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...
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...
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...
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...
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...
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....
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...
Protection of the quality and integrity of food supplies is of global concern. Crops can accumulate non-nutritive and sometimes toxic metals and metalloids. Accumulated metals/metalloids can come in part, from fertilizers, which may contain variable levels of non-nutritive metals or metalloids such as arsenic (As), cadmium (Cd), lead (Pb), nickel...
The atmospheric transport and deposition of semi-volatile organic compounds (SOCs), including current and historic use pesticides, polychlorinated biphenyls (PCBs) and polycyclic aromatic hydrocarbons (PAHs), to mountain ecosystems may result in the exposure of tadpoles to these SOCs. This exposure has been implicated in amphibian population declines in California. Tadpoles encounter...
Two Oregon reservoirs contaminated by different mercury
sources were compared for mercury distribution in sediment and
bioaccumulation by fish. The average mercury concentration in
the sediment of Cottage Grove reservoir (0.67 ± 0.05 μg/g dry
wt) was higher than for Dorena Reservoir (0.12 ± 0.01 μg/g dry
wt). Sediment mercury...
During the past 30 years, numerous studies have focused on the toxicities of polycyclic aromatic hydrocarbons (PAH). Laboratory and field studies have helped elucidate the detrimental effects of these chemicals on growth, reproduction and immune response. Polycyclic aromatic hydrocarbons are in the priority list of chemicals to be studied by...
The Arctic has long been considered to be a pristine environment, far
from population centers and pollution sources. The detection of synthetic
organochlorine compounds in various elements of the Arctic food web has confirmed
the global dispersion of pollutants, particularly of persistent compounds such as
organochlorines and heavy metals. Levels...
Liver X receptor (LXR), farnesoid X receptor (FXR) and peroxisome proliferator-activated receptor (PPAR) are adopted orphan nuclear receptors that function as lipid sensors. These receptors respond to cellular lipid levels and regulate the expression of target gene. Previously, it was demonstrated that low doses of chlordecone (CD) pretreatment disturbed exogenous...
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...
Factors that influenced the uptake, storage, and elimination of dietary quinoline by rainbow trout (Salmo gairdneri) were studied to obtain an understanding of the mechanisms affecting the bioaccumulation of dietary contaminants in teleosts. Rainbow trout readily absorbed ¹⁴C-quinoline from pelleted food (1% ration at 138 ug quinoline/g food) and most...
Female mink (Mustela vison) are highly sensitive to polychlorinated biphenyl (PCB)-induced reproductive impairment. The goal of this research was to develop a better understanding of the mechanism of PCB-induced effects on female mink, mink embryos, and surviving mink kits. Anestrous, juvenile female mink and pregnant, adult mink were exposed to...
Previous studies have shown that rainbow trout exposed to dieldrin via diet for 9 to 12 weeks increased biliary excretion of a subsequent dose of [¹⁴C]dieldrin by 500%. This was not explained by induction of the cytochrome P-450 (CYP) system involved in oxidative metabolism of these compounds. We hypothesized that...
Programming style is a highly individualistic and important part of programming. Yet, there is no general agreement on the definition of programming style nor even the qualities that make up programming style. Existing automated programming style analyzer programs either produce a battery of numbers, leaving the weight and/or importance of...
In this research, we have captured, in pattern form, key elements of programming and design in four programming paradigms (imperative, object-oriented, functional and logical) as well as multiparadigm programming. These pattern sets have formed a foundation upon which we were able to build a deeper understanding of multiparadigm programming and...
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...
In 1968 the Oregon Fish Commission (now Oregon Department of Fish and Wildlife) initiated P.L. 88-309 funded studies to develop techniques to spawn and rear several species of bay clams. After our successful spawning and rearing studies, we planted the laboratory-produced juvenile clams on various tideflats of several estuaries to...
The general problem of classroom scheduling is well known to be NP-complete. A typical classroom scheduling problem is that of assigning students to a limited number of pieces of laboratory equipment. Frequently several identical pieces of equipment are available only at fixed hours and have limited access due to physical...
Mycobacteriosis is a common disease of laboratory zebrafish (Danio rerio). Different infection patterns occur in zebrafish depending on mycobacterial species. Mycobacterium marinum and M. haemophilum produce virulent infections associated with high mortality, whereas M. chelonae is more wide spread and not associated with high mortality. Identification of mycobacterial infections to...
Understanding of techniques that can be used to develop software for various parallel machines has not fully matched the dramatic progress in hardware in recent years. Most parallel programming techniques have been closely tied to specific hardware. Different machines have different primitives and architectures. Programming and porting an application with...
There has been little research into how end-user programming environments can provide explanations that could fill a critical information gap for end-user debuggers – help with debugging strategy. To address this need, we designed and prototyped a video-based approach for explaining debugging strategy, and accompanied it with a text-only approach....
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 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 paper reports the findings of two studies conducted at Oregon State University. The first set of studies compares use of header comments versus mnemonic procedure and function names by programmers performing tasks relating to modification tasks. The second study compares the use of header comments versus in-line comments when...
This thesis describes a syntax-directed compiler-compiler
called COMCOM which has been implemented by the author on the CDC
3300 under the OS-3 operating system. The theory and terminology
of the parsing method and compiler-compilers in general are briefly
discussed. COMCOM uses Floyd's operator precedence bottom-up
parsing technique which avoids backup...
Composition and structure of Oregon ash
(Fraxinus latifolia) woodlands in the William L. Finley
National Wildlife Refuge, Oregon are described. Twenty
stands dominated by Fraxinus latifolia were sampled with
500 m2 circular macroplots in which floristic microplot
data were collected for plant community synthesis. Plant
communities were identified by computer-assisted...
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...
Methods are presented to acquire data from analytical ultracentrifugation experiments
by computer using the absorption optical scanning system of the Beckman Model-E
ultracentrifuge. A computer program was written which analyzes sedimentation velocity
experiments by the van Holde - Weischet method and by the second moment method. The van
Holde -...
The purpose of this study of the life and career of Dr. Carl
Leonard Anderson was to recount his professional contributions to
the field of health and relate these to public health and health education. The major emphasis of this study concerned Dr. Anderson's
professional life.
The accomplishment of the...
This is a bibliography of the work of T. L. Jackson, who conducted research at the North Willamette Research and Experiment Center. It is limited to those Extension publications and research reports that addressed the nutrient needs of fresh market and processed vegetables.
The Cottage Grove Reservoir has been impacted by a point source (Black Butte Mine), where mercury mining and processing has occurred within its watershed from the 1890's to the late 1960's. Total mercury concentrations in surface sediments transect samples, core samples, tributary samples, and representative food web species were measured...
Feeding rainbow trout 0.3-0.4 mg dieldrinlkg/d for 9-12 weeks stimulated the biliary excretion of a subsequent dose of [¹⁴C]dieldrin by 500% and [³H]7,12- dimethylbenz[a]anthracene (DMBA) by 240%. In vitro work demonstrated that this interaction occurred without induction of the cytochrome P450 system, or other hepatocellular proteins involved in metabolism. The...
Cells of the ventrolateral dermomyotome delaminate and migrate into the limb buds where they give rise to all muscles of the limbs. The migratory cells proliferate and form myoblasts, which withdraw from the cell cycle to become terminally differentiated myocytes. The regulatory mechanisms that control the later steps of this...
Currently, the technologies used to separate lignocellulosic biomass into its component parts (cellulose, hemicellulose, and lignin) and enzymatically hydrolyze the cellulose to glucose for conversion to ethanol could be improved economically and in terms of efficiency. A major impediment to utilizing the biomass is the presence of residual lignin. The...
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...
This paper compares three classes of algorithms for finding
Hamiltonian circuits in graphs. Two of the classes are exhaustive
search procedures and this study finds them to have an exponential
dependence on the size of the graph. The third class of algorithms,
based on Warnsdorff's rule, is found to be...
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...
Chlordecone belongs to the class of persistent organochlorine pesticides that are remarkably resistant to environmental degradation. Even though their use was banned in the United States in 1978, these compounds can still be detected in both humans and wildlife throughout the world. Previous work has shown that the pretreatment of...
The goal of this project was to investigate the addition of parameterized types to the Java programming language. Two different parametric polymorphism mechanisms were developed and compared. The first was a preprocessor and the second was a compiler.
Parameterized types allow a programmer to create generic programs. Much as a...
Understanding connectivity among exploited populations is critical to their sustainable management and long-term viability. In the marine environment, estimates of connectivity often rely on the use of genetic markers, as dispersal primarily occurs during a planktonic larval phase which is difficult to track using direct methods. In this thesis, we...
Aquatic insects are used extensively to evaluate water quality. Despite their
widespread use as indicator organisms, relatively little is known about the
organismal characteristics that determine sensitivity differences to individual and
multiple stressors. Insects have evolved several respiratory strategies that range
from breathing atmospheric air to utilizing dissolved oxygen in...
The problem addressed in this paper is that of the extension of multimedia mechanism into Objex, an object oriented framework.
Several multimedia productions have been developed recently, such as QuickTime™, HyperCard, MacSpeaker, Multi-Ad Creator 3.0, etc. [Heid 91]. The common problems with them, however, are that they are all implemented...
Large dams and their respective reservoirs can provide renewable energy and water security, but also profoundly alter riverine ecosystems. In the Pacific Northwest, dams and reservoirs cause discontinuities in river networks that have been particularly problematic for anadromous fishes. As barriers to the upstream and downstream migration of anadromous fishes,...
Characterization of the 5' flanking region of rainbow trout ki-ras gene was begun with the cloning and sequencing of this region by the inverse PCR technique and dideoxynucleotide chain termination method. In total, a nucleotide sequence of 1080 bp upstream from the first coding ATG was sequenced. Although this region...
National Forest management in the Pacific Northwest is shifting
from a focus on commodity production to ecosystem management, in which
the health of the entire forest ecosystem is considered, rather than that
of a few key species. Ecosystem management includes retention of some
live trees following timber harvest (green-tree retention)...
Dedicated to the preservation and promotion of many of the nation’s most threatened and endangered species, the W.L. Finley National Wildlife Refuge is highly invested in the management of some of the last remaining upland prairies once prevalent throughout Oregon's Willamette Valley. More than a century of land fragmentation, fire...
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AN ABSTRACT OF THE THESIS OF
Jona L. Ensley for the degree of Master of Science in
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...
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 paper presents a study of the distribution of assembly language instructions in two avionics software applications and the development of an information theoretic software complexity metric based on the study. The instructions were grouped into classes , e.g. load and store, arithmetic, jump, compare, etc. As expected the distribution...
This paper presents findings from an investigation into the stay or exit decision of vessel owners in Scottish fisheries subject to stock recovery measures. Semi-structured in-depth interviews were conducted with 39 vessel owners during and following a vessel buy-back scheme. Empirical results show key factors affecting the decision to stay...