An ecological study of a microorganism similar to that isolated
in 1956 and designated as Micrococcus radiodurans indicated
that the organism could be isolated from several different environments.
By taking advantage of its radio-resistivity, high levels of
gamma radiation were used in the isolation procedures to inactivate
most of the...
The two primary considerations for highway work-zones are its effect on commuter mobility and worker safety which are often spoken of together. However, it must be noted that they often conflict with each other. For example, traffic control plans that reduce travel speed in work-zones improve both commuter and worker...
It is necessary to evaluate and compare the characteristics of
various methods of accessing data-files in order to utilize economically
both the hardware and the software (Space and Time) supported
by the digital on-line system. The purpose of this paper is to
describe and evaluate the structure and use of...
The High Temperature Lattice Test Reactor (HTLTR) at Richland,
Washington, operates at temperatures up to 1000°C. Its low nuclear
power requires a 384 kilowatt electrical heating system, that is
divided into four circuits, to attain the high temperatures in the
ten-foot cube of moderating graphite. This thesis describes the
design...
The purpose of this study is to investigate the
rhetorical strategies used by Reverend Jesse L. Jackson
from the 1970's to the 1990's. Specifically, this study
examines Jackson's use of narrative to empower himself, his
constituency, and his political ideologies without
possessing a traditional political platform. Jackson
raised political and...
Purpose of the Study The purpose of this study is to determine the direction of the
emerging role of the teacher aide in Oregon Public Schools and to
make recommendations on the basis of the findings of this study.
Securing and Treating Data
The data for this study were obtained...
Aflatoxins B₁, Q₁ and aflatoxicol, R [subscript o] F, but not B₂ were activated in the presence of NADPH by the 105,000 x g pellet from rainbow
trout (Salmo gairdneri), Mt. Shasta strain, liver to products lethal to
Bacillus subtilis GSY 1057 (metB4, hisAl, uvr-1). Electron microscopy
confirmed the microsomal...
A facile route to bicyclo(2.1.1)hexanes was developed involving
the intramolecular photocyclization of 1, 5-hexadien-3-one to
bicyclo(2.1.1)hexan-2-one. A study of the chemistry of bicyclo-(2.1.1)hexan-2-one was undertaken. Deuterium exchange and borohydride
reduction demonstrated the strain present in the ketone.
Further evidence was obtained from the failure to introduce substituents
alpha to the...
The purpose of this thesis is to represent and calculate unsymmetrical
secondary faults on a grounded wye-to-delta transformer
bank.
This thesis is specifically concerned with the secondary connections
often encountered in industrial installations. Faults on these
systems have not been adequately investigated.
Three types of faults are considered, namely:
1....
Many centers of population in the Pacific Northwest are dependent
upon employment in the forest based industries. Mary of these
timber dependent communities look to the public forests for their raw
wood requirements. In some localities the installed capacity has outstripped
the local wood supply. This necessitates reaching into other...
Late blight, caused by Phytophthora infestans, is a devastating problem to potato production in many parts of the world. While the foliar phases of this disease are well characterized, tuber infection, leading to quality losses and disease perpetuation, is less well understood. Experiments were conducted during 1998 and 1999 in...
The purpose of this qualitative study was to examine the factors that contributed to the engagement of middle and high school teachers in professional learning with instructional coaches, relative to disciplinary literacy. The study addressed the following question: What factors appear to influence secondary content-area teachers' engagement with instructional coaches,...
Batch sorption tests were conducted using 3,4-DCP and cellulose triacetate as the sorbate/sorbent pair. Sorbate concentrations
in the liquid were sampled with time and analyzed by electron
capture detector gas chromatography. Sorption was found to be a two
stage process characterized by a rapid initial uptake followed by a
extended...
Two hundred twenty male students randomly selected
during Spring semester 1988 from each of two Saudi Arabian
universities, King Faisal and King Fand, were administered
a three-part attitude measurement instrument and a fourpart
Health-Related Physical Fitness Test. The attitude
measurement instrument, derived from the McDonald Attitude
Inventory and the Wear...
The toxic effects of degrading the chlorinated hydrocarbons trichloroethylene (TCE), chloroform (CF) and cis-1,2-dichloroethylene (cis-1,2-DCE) were studied in the bacterium Nitrosomonas europaea. N europaea is an ammonia-oxidizing bacterium that obtains all of its energy from the oxidation of ammonia to nitrite. This metabolic process involves two enzymes, ammonia monooxygenase (AMO)...
Kelso's theory of Biocultural Evolution states that as culture evolves, the variation between groups diminishes while the variation within groups increases. The theory is tested with stature, cephalic index and nasal index. Means and standard deviations for these traits are examined for 237 ethnic groups. The groups are organized according...
This study was concerned with determining if: (1) the
effectiveness of residence hall student government varies according to
the perceptions of its role held by residence hall student staff and
government officers, and the hall type and population; (2) the
perception of hall student government held by student staff varies...
In many schools, drugs, vandalism, assaults,
thefts, and violence against both students and teachers
have destroyed the orderly atmosphere needed for teaching
and learning. While juvenile criminal behavior,
both in school and elsewhere, is caused by a large and
complex set of sociological and psychological conditions,
there is evidence that...
Cometabolic biodegradation processes are potentially useful for the
bioremediation of hazardous waste sites. In this study the potential application of phenol-oxidizing
and nitrifying bacteria as "priming biocatalysts" was examined in the
degradation of polycyclic aromatic hydrocarbons (PAHs), aryl ethers, and aromatic
ethers. We observed that a phenol-oxidizing Pseudomonas strain cometabolically...
The central problem of this study was to construct and validate
an instrument to measure the complexity of the contexts in which student
teaching occurs and to use the instrument in the investigation of
factors related to context complexity and its effect on student teacher
performance.
The instrument to measure...
The purpose of this study was to determine the
effects of a six-week career planning dropout prevention
program on the self-concepts and academic achievement of
at-risk middle school students in an inner-city public
school environment. The research population consisted of
1,434 students (grades seven, eight and nine) attending an
inner...
This qualitative study examined the influence of the 2011 Oregon Writing Project (OWP) Summer Institute (SI) on the professional development of six teachers in the following ways:
1. The development of case descriptions of teachers' personal and professional backgrounds relevant to their teaching of writing.
2. An examination of the...
This study was an ethnographic case study of a
Vietnamese unaccompanied minor in a post secondary setting.
There were two guiding questions for the study: (1) How
does the subject perceive language as it relates to
educational experience? (2) What kinds of observable
personality, cognitive, or affective factors have
contributed...
Increased global competition is forcing organizations to increase their use of group decision making today. Computerized group decision support aids (CGDSAs) are being developed to improve the efficiency of these groups and to improve decision quality. Even though the use of CGDSAs has increased, very little research has been done...
The central purposes of this study were to review the
historical sources of David Kolb's formulation of experiential
learning theory, and to determine the effect and
application of Kolb's theory and Learning Style Inventory
as reflected in the literature between 1971 and 1990.
It was found that Kolb based his...
Statistically, travel by air is one of the safest forms of transportation. Yet we
continue to experience aviation tragedies. Do we fully understand flight safety or is
there another way of looking at the problem? In this work a new way of approaching
the question of flight safety is developed,...
Cryopreservation depends on the equilibration of cells with high concentration of cryoprotective agents (CPAs). However, the addition of CPAs can induce damages to the cells. One of the damages is due to too much shrinkage or swell of the cell volume which lead to the cell death during the addition...
Full Text:
, & Environmental Engineering
By Kenneth Huang
Mentor: Dr. Adam Higgins
Cryopreservation
Preservation of
Cryopreservation depends on the equilibration of cells with high concentration of cryoprotective agents (CPAs). However, the addition of CPAs can induce damages to the cells. One of the damages is due to too much shrinkage or swell of the cell volume which lead to the cell death during the addition...
Full Text:
Engineering
By Kenneth Huang
Mentor: Dr. Adam Higgins
Cryopreservation
Preservation of cells or tissues
A program of research has been established at Oregon State
University to study wood residue combustion using an experimental
spreader-stoker combustor. This research was conducted to increase
the understanding of combustion occurring in wood fired boilers.
Using Douglas Fir screened to 3/8-3/4 inches, two 4x4 factorial
experiments were conducted varying...
Particles generated from wear of prosthesis joint bearing surfaces induce inflammation and promote pathological periprosthetic osteoclast-mediated bone resorption (osteolysis). Obesity increases the risk of prosthesis failure. However, despite being morbidly obese, leptin-deficient ob/ob mice are resistant to osteolysis. These findings suggest that leptin exerts effects that act to increase particle-induced...