The major historical studies that have examined American
biology have emphasized the development of experimental biology at
the end of the nineteenth century. In this characterization, the
descriptive branch of biology has often been treated as less than
important and, in several cases, as a hindrance in the application
of...
The Motor Systems Resource Facility (MSRF) at Oregon State University presently conducts a variety of steady state tests on Motors and Generators, with ratings of upto 300Hp.(225kW), using a dynamometer. The dynamometer consists of an induction motor fed by a power electronic converter. A control computer uses a serial link,...
This dissertation describes an investigation of DNA precursor supply for mitochondrial and nuclear DNA synthesis in HeLa cells and Mouse L-cells. HeLa cells were used for the quantitation of cellular and mitochondrial deoxyribonucleoside triphosphate (dNTP) and ribonucleoside triphosphate (rNTP) pools and of changes in pools in response to treatment with...
The purpose of this study was to describe the level to which a target work culture based on core organizational values was shared in one lumber manufacturing plant. The organization under study perceived that their culture was a source of competitive advantage and was key to their success in safety,...
The United States Congress is currently debating a bill to reauthorize the 1980 Superfund Hazardous Waste Cleanup Law. If this bill is not reauthorized by the end of 1995, the program will either continue in its present form or be eliminated altogether.' As currently administered, the Superfund program sets out...
The brain has long attracted the interest of researchers. Some tasks, such as pattern
recognition and optimization, have proven to be exceptionally difficult for conventional
computing systems to perform, but are executed by the brain almost effortlessly. Due to
the large number of neurons and interconnections, it has proven impossible...
Acute phase protein (APP) measurement can be used to characterize and rapidly detect inflammation. Serum amyloid A (SAA) and haptoglobin (HP) may be useful for diagnostic and prognostic purposes in horses presenting for colic and other inflammatory diseases. The objective of this thesis was to evaluate the use of SAA...
In recent years, state governments in the U.S. have promoted improvements to science, technology, engineering, and mathematics (STEM) education as a means to stimulate future economic growth and increase economic mobility into careers with higher earnings. Oregon’s STEM Initiative includes the creation and development of strategic public-private partnerships which aim...
Group Engagement Theory describes the relationship between citizen perceptions of policy, individual identity and status judgements, and individual group engagement decisions. Utilizing a least likely crucial case methodology, this paper uses the case of Josephine County, Oregon to determine the validity of the Group Engagement Theory prediction that citizen identity...
The primary purpose of this study was to develop guidelines for
planning a preservice preparation program which would encompass the
critical issues in community college teacher education identified in
the related literature and by national and state authorities. The
secondary purpose was to suggest a plan for a community college...
The objectives of this research paper are (1) to establish if a
relationship exists between those water-related services - domestic
water and waste disposal - already present in the North Albany are a
prior to 1966 and housing growth that occurred during the period
1966-1975, (2) to assess the impact...
The Greenbelt Land Trust (GLT) (a grass-roots conservation group in
Oregon) is interested in a conservation plan for the Marys River Corridor. To
facilitate this effort, a resource inventory was required and a Geographic
Information System (GIS) data base used to compile the inventory (called the
Marys River Project (MRP))....
This study was an empirical investigation of two methods of
college classroom teaching--lecture and discussion. The design was
both experimental and descriptive, differing from prior methodological
comparisons in that a more sophisticated test statistic was used in
the analysis of the data. Whereas most similar studies used t tests,
or...
The purpose of this thesis is (1) to study two Oregon communities
and to report data related to their concepts of community
education and (2) from this data, to develop guidelines for the planning,
organization, and implementation of comprehensive community-wide
educational programs. In accomplishing these purposes, it is
hoped a...
May We All Wake Up One By One is the beginning of a novel set in the West African country of Guinea. The story follows Sean Wake, a twenty-something American who finds himself working for the Feed the World Program as the country falls apart around him. While his co-workers...
Problem School districts need information on how to better
communicate with voters because budgets are being defeated. Budgets
are growing larger as schools require an increasing level of
financial support to respond to societal changes.
This research focused primarily on the published school budget
because in the state of Oregon...
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Keith Scribner
The Fifth Floor and Other Stories is a short-story collection about missed
This research examines women's magazine editors' perspectives of the relationship between editorial and advertising content in women's magazines. It specifically investigates how this relationship affects both general editorial content and more specifically, social topic stories. Mainstream women's beauty/fashion magazine editors—including editors-in-chief—were queried as to the nature of these relationships. Interviews...
The problem considered is that of causing all the machines of an
array to turn on simultaneously in the least amount of time. Each
machine is a finite sequential machine that can communicate with a
limited number of prescribed neighbor machines.
A solution for a linear array of these machines,...
Five Ultra light Fabric Reflux Tubes (UFRTs) were tested in a thermal vacuum chamber at the National Aeronautics and Space Administration's Johnson Space Center in September 1994. These test articles were design and fabricated by staff at the Pacific Northwest Laboratory, operated by Battelle Memorial Institute for the United States...
Groups of second-growth Douglas-fir (Mirb.) Franco were excavated
in plots of two to six trees on two sites in the vicinity of Cowichan
Lake, Vancouver Is., British Columbia. Eleven excavation plots provided
36 trees which could be studied in pairs (a total of 50 pairs) in order
to ascertain the...
Deterministic source signature deconvolution is applied to the
processing of marine wide angle and vertical profiler data with air-gun
sources. Optimum results are obtained with a source signature
measured by stacking the signal reflected from a relatively homogeneous
abyssal plain sedimentary environment. This eliminates the need for
the unstable inverse...
The Humboldt marten, Martes americana humboldtensis, has undergone a dramatic decline throughout its historical distribution in coastal Northwestern California. There is currently only one known population occupying an area occurring in <5% of the historical distribution of the subspecies. Conservation and management efforts to benefit this population are hampered by...
Large-scale experiments on circular model cell bulkheads were
conducted to define the distribution of hoop stresses, deflections of
the cells, distortion of the cell fill, ultimate overturning resistance,
and the critical mode of failure. The embedment depth of the model
cells was varied to investigate the effect of embedment on...
Lamellar x-ray diffraction was studied from thin films of L-α-1,2-dipalmitoyl lecithin (DPL) and a 1:1 mixture (BrDPL) of L-α-l-palmitoyl-2-(9- bromopaimitoyl) lecithin and its 10-bromo analog. The specimens had high lamellar order, with an upper bound on the mosaicity of 6 mrad (0.4°) for DPL and BrDPL. With various water contents,...
A PID controller was designed to control the performance of an oil-heated fractal-like branching microchannel desorber for use in an ammonia-absorption refrigeration system. Both the amount and concentration of ammonia refrigerant generated at the desorber can be controlled by choosing the rectified circulation ratio as the controlled variable in a...
Robots are being utilized in ever more complex tasks and environments to help humans with difficult or dangerous tasks. However, robotic grasping is still in its infancy and is one of the limiting factors which prevent the deployment of robots in the home and other assisted living scenarios. Traditional methods...
Prostate cancer is responsible for a substantial loss of life and burden of suffering among adult males. Evidence suggests that the risk of morbidity and mortality from prostate cancer can be reduced through specific screening and dietary practices (MCI, 2002; Ries et al., 2002). Further evidence suggests that screening can...
The goal of this study was to evaluate the ability of two seedling quality evaluation methods to predict the field survival of Douglas-fir (Pseudotsuga menziesii) seedlings. The starch reserves in seedlings have been suggested as a possible predictor of seedling quality. Starch reserves have been shown to decrease during cold...
Studies towards the total synthesis of (+)-Phomactin A (1), D (6), and G (9), fungal metabolites with unique molecular architecture and pronounced biological activity, are described. These studies resulted in the synthesis of advanced intermediates 354 and 356, which contain all of the carbon atoms of 1, 6 and 9....
Efficiency of nitrogen fertilizer uptake by soft white winter
wheat (Triticum aestivum L.) was measured over two cropping seasons
across a range of soils and cropping histories in the Willamette
Valley. Fate and potential losses of applied nitrogen were also
assessed over a seventeen month period.
In both cropping seasons,...
This study describes the composition of forest landscapes surrounding
northern spotted owl (Strix occidentalis caurina) nests in the central Cascade
Mountains of Oregon. I compared forest composition around 126 owl nests in 70 pair
territories with forest composition around 119 points drawn randomly from all
terrestrial cover-types, and around 104...
Neutron diffraction experiments on europium telluride/lead telluride super-lattice systems reveal pronounced correlations between the antiferromagnetic EuTe layers. The results from an assortment of varying experimental conditions (applied
magnetic field, temperature, etc.) and their relevance to the physical mechanism underlying this striking phenomena are discussed. Stochastic computer simulations are compared to...
In response to concerns about excessive stand densities and high-severity wildfires, land
managers in the western United States are carrying out extensive programs of fuel reduction
thinning. How will these sudden reductions in canopy cover and associated changes in
habitat affect native and exotic herbaceous vegetation and canopy species regeneration?...
Full Text:
AN ABSTRACT OF THE THESIS OF
Keith A. Perchemlides for the
Nearly 9,000 feet of Cretaceous mudstones, shales, sandstone,
and conglomerates are exposed along the northeast-trending Mitchell
anticline of central Oregon, These rocks are divided into two formations
on the basis of criteria developed in this investigation. The
lower formation, hereby designated the Meyers Formation, is 4,716
feet thick at its...
Physical-biological interactions in the Southern Ocean were investigated using remote sensing data from several different satellite sensors. Satellite sea surface temperature data were used to study the dynamics of the Antarctic Polar Front (PF). Satellite ocean color data were used to estimate surface chlorophyll concentrations and their relation to various...
Research into the phenomenon of adaptation has surged in recent years as people across the globe face evolving climate situations. The role of women in this adaptation research, and in policy discussions, is often unclear or entirely unaddressed. An array of literature exists on the inclusion of women into environmental...
Three-dimensional laser scanning has revolutionized spatial data acquisition and can be completed from a variety of platforms including airborne (ALS), mobile (MLS), and static terrestrial (TLS) laser scanning. MLS is a rapidly evolving technology that provides increases in efficiency and safety over static TLS, while still providing similar levels of...
Despite advances in the understanding of rain-on-snow storms and their resulting peak flows, little is understood about the response of snowmelt to precipitation and the relative timing of the two at multiple temporal scales within such events. To address this issue, climate, snowmelt, and streamflow data were analyzed for 26...
'Marion' and 'Thornless Evergreen' blackberry volatiles were analyzed by capillary gas chromatography-flame ionization detection (GC-FED) and GC-mass spectrometry (GC-MS). Based on total percentage of FID area 'Thornless Evergreen' contains significantly more alcohols, hydrocarbons, and phenols than the 'Marion'; 'Marion' contains more acids and esters. Both cultivars contained comparable amounts of...
Heterostylum robustum (Osten Sacken) is the principal parasite
of the alkali bee, Nomia melanderi Ckll., one of the most efficient
pollinators of alfalfa in the western United States.
The purpose of the study was to determine the incidence of
parasitism and to investigate the biology of H. robustum.
The fly...
The primary focus of this study was to determine the competencies
required to manage an athletic club. Also, the intention was to
determine if differences existed in required competencies between
managing varying sizes of clubs: namely, mini, maxi, and super; and to
identify course content areas for purposes of developing...
The Middle Fork John Day River is composed of low gradient, alluvial valley
segments separated by constrained, canyon-like reaches, and has a history of multiple
land-uses. These factors can alter the physical and biological structure of streams, and
disrupt the longitudinal river continuum. I examined habitat, fish, macroinvertebrates,
and primary...
The dependent transfer of a traveler with disabilities on board an aircraft places the transferors, as well as the traveler, at risk of disabling lower back injury. This risk is increased on board an aircraft due to the confined space in which the transfer takes place. The purpose of the...
An aspect of the genetic structure of coastal Oregon steelhead was
explored and found to gradually change in a north to south pattern for the
allelic frequencies of several enzymes. Isocitrate dehydrogenase and
superoxide dehydrogenase were the clearest examples of this pattern of
variation. This pattern was most evident in...
Oxygen uptakes of Douglas-fir beetles collected during November
1969 through April 1970 were measured at different experimental temperatures.
The oxygen uptakes of adult beetles increased at each
experimental temperature as the seasons progressed from winter to
spring.
The larval and pupal Douglas-fir beetles, collected in February
1970, had lower oxygen...
This study examined the relationship and strength of association
of the two independent variables of gender (male, female) and perceived
sex role identity (masculine, androgynous, feminine, and
undifferentiated) on the leadership style, leadership range (number of
back-up styles), and leadership adaptability (effectiveness) of nonforeign
graduate students at a Land Grant...
Variation in growth rate of Dover sole (Microstomous pacificus) off Astoria and Brookings, and English sole (Parophrys vetulus) growth off Astoria and Coos Bay, Oregon was studied using the distance between annuli on scales and interoperculum bones indicating growth rate for Dover sole
and English sole respectively. The age at...
Initially, components of an aquatic food web were examined to study impacts of recreational use on the aquatic ecology of Quartzville Creek, Oregon in 1995 and 1996. Measurements of the food web components consisted of observations of harlequin ducks (Histrionicus histrionicus), visual counts of the larval caddisfly Dicosmoecus gilvipes, benthic...
The increased use of outdoor recreation as a part of the
American way of life has focused attention on the diminishing ratio
of suitable land available to meet the recreational demands. In
Oregon, where the demand is greatest, there is still ample undeveloped
land for recreation use. There exists, therefore...
The reaction of fluid or gas flowing around an obstacle is a common engineering problem. Computer simulations are often used to measure and visualize the physical processes involved. In this report, we will discuss a parallel implementation of a simulation using the Smooth Particle Hydrodynamics (SPH) approach to fluid flow....
The objective of this study was to ascertain the magnitude and
distribution of rainfall over coastal waters of the northwestern United
States and to compare values with those at nearby land stations.
Precipitation was measured with gauges at Totem, rainfall amounts
were assessed from weather reports at lightships off the...
The single-cross and most F₂ progenies of 19 genotypes of
tall fescue (Festuca arundinacea, Schreb. ) were used to study the
breeding behavior of forage yield. Parental genotypes were selected
for high self-sterility, high chromogen and high crude protein. These
were studied in two groups of nine intermediate and ten...
Early and later successional stages of the assemblage of turf algae and sessile
animals of a Macrocystis kelp forest were studied off San Nicolas Island, California
from 1980 through 1981, and 1983 through 1984. Kelps were manipulated to
determine if differences in illumination could account for dominance by turf algae...
The extraction of pentachlorophenol (PCP) from pressure treated wood
wafers with supercritical carbon dioxide has been studied. Experimental data
were obtained for the effects of pressure (17.5 - 25.0 MPa), temperature (313 - 353
K), flow rate (1 - 3 ml/min at supercritical conditions), and sample size (0.8 x 10...
This thesis examines the transient response of a packed bed heat
regenerator when heated from an initial uniform bed temperature. Very large
(1700 K) temperature differences were studied as well as the effect of
simultaneous chemical reaction in the gas phase.
First the effects of temperature on physical and transport...
Ferrites have been used for various high frequency applications as bulk
materials. These applications, however, are limited to large dimension devices. In
this thesis, thin film ferrites were deposited from a low temperature solution-based
deposition process that is suitable for micro-scale high frequency applications. The
low temperature nature of this...
The complexity of forest management has increased with the scope of resources of concern and the level of scrutiny from stakeholders. The design and use of specialized computer software, often referred to as “decision support systems” (DSS), is one method for helping managers deal with this complexity. DSS have proven...
A digital phase locked loop (DPLL) and a statistical time-to-digital converter (STDC) were previously fabricated in a 0.35µm, 3.3V SOI CMOS process. This work summarizes these designs and characterizes the measured performance. Simulations supplement the measurements where applicable.
The DPLL was found to reach a locked state under a limited...
Renewable energy is a topic of significant interest and importance in the world today. Ocean wave energy, particularly in areas such as the Oregon Coast, has considerable potential as a renewable resource. However, to rightly evaluate the overall cost of energy for wave energy converters, survivability and maintenance issues must...
This thesis examines the transient performance of packed bed heat
regenerators when very large temperature differences are involved. The
effects of gas temperature on the key gas physical properties of velocity,
density and heat capacity were studied via simulation.
Three models were developed and compared. The first model
(HRKDV) considers...
Two packages of subroutines were developed to perform material
balances on chemical processes using the simultaneous modular
approach and the equation-based approach. The performances of these
packages were compared for five different processes under at least
two conditions: one with no design specifications, and one with two
or more design...
The principal objective of this study was to investigate process simulation and
optimization of an existing offshore natural gas process which needed profitability
improvements. Optimization was done using two alternative approaches: a global
approach (response surface methodology) or a local approach (successive quadratic
programming). The global approach was characterized by...
A review of Single-Input Single-Output Internal Model Control
(IMC) is presented, showing its relationships to the Dahlin
algorithm, PID type controllers for simple models with and without
deadtime and Smith predictor control.
The effect of errors in the time constant and the gain of a
first order model with deadtime...
Two basic approaches to reduce computational requirements for solving
distillation problems have been studied: simplifications of the model based on
physical approximations and order reduction techniques based on numerical
approximations.
Several problems have been studied using full and reduced-order
techniques along with the following distillation models: Constant Molar
Overflow, Constant...
The nature of a natural antioxidant present in shrimp was
investigated.
Shrimp extracts were prepared using different solvents to
ascertain the best extraction method. The antioxidant activity was
determined using the (β-carotene-linoleate model system and the
oxygen weighing method. Ethanol proved to be the best solvent for
extracting the natural...
The effect of washing machine separated rockfish flesh on
composition, quality and desirability was investigated.
Washing machine separated rockfish flesh resulted in a
36.88% loss of solids. The greatest reductions were found in the ash
(80.32%) and lipid (65.13%) levels in the washed flesh. Most of the
sarcoplasmic proteins were...
Small hydroelectric development, the construction or reconstruction
of small scale hydropower systems, has become a much discussed alternative
for the future supply of U.S. energy. In the Pacific Northwest,
the greatest potential for small hydro application is in the development
of new dam sites. Although much is known about the...
A computer assisted design model, developed for
undergraduate students to teach the basic principles of
humidification design, is developed and presented.
Beginning with the development of the differential
equations, the conversion to numerical code is presented,
followed by a series of applications to mechanical draft
in cooling towers, natural draft...