To learn more about the role β-galactosidase plays in rate of
acid production in milk by lactic acid bacteria, several lactobacilli
were examined for this enzyme. Cells from different species were
grown in lactose broth to induce β-galactosidase activity. The specific
activities of whole, solvent treated cells, and of cell-free...
Many trace elements (e.g., Zn, Cd, Mo) are essential phytoplankton micronutrients, making them crucial to the marine ecosystem and ultimately the carbon cycle. Because of this association trace metals are also utilized in paleoceanographic studies (e.g., Mo, Cd). However, not much is known about what controls the cycling of these...
To test the effects of kiln-drying on strength properties of Douglas fir and western hemlock, temperatures to 230 F, conditions for equilibrium moisture contents of 6 percent and 12 percent, and prolonged heating were investigated.
Prolonged heating and choice of conditions for 6 percent or 12 percent equilibrium moisture content...
Using a simple dry transfer process, I construct and characterize three nanoscale MoS2 devices using current-voltage curves, Raman spectroscopy, optical and atomic force microscopy. I compare these devices, the thinnest of which was few layer ( ≤ 10 nm) MoS₂ capable of showing photoconductance, with a current whose magnitude is...
This research examines the literary and philosophical dimensions of the African American Harlem Renaissance, beginning with the historical milieu of the early twentieth century. A social movement that became known as Uplift and the so-called Cabaret Movement emerged as important, competing literary and social ideologies within the Renaissance. W.E.B. Du...
Reoxidation and mobilization of previously reduced and immobilized uranium by dissolved-phase oxidants poses a significant challenge for remediating uranium-contaminated groundwater. Preferential oxidation of reduced sulfur-bearing species, as opposed to reduced uranium-bearing species, has been demonstrated to limit the mobility of uranium at the laboratory scale yet field-scale investigations are lacking....
Evidence-based interventions (EBIs), which demonstrate efficacy in research settings, are rarely sustained when implemented in public health organizations. Rather, EBIs are often de-adopted - potentially undermining the positive benefits of the EBIs for the communities that access them. The lack of sustainability is particularly troubling among public health organizations that...
Research and public concern of poly and perfluoroalkyl substances (PFASs) as environmental contaminants has increased significantly due to the increasing number of reports of their detection in humans and wildlife. PFASs have a number of commercial applications including surfactants, coatings, polymers, and levelers, which are used on consumer products like...
Silicon integrated circuit (IC) technology has enabled numerous electrical and optical sensors used in biological and chemical assays, where they can increase performance while decreasing cost and size compared to traditional detectors. There is significant potential to further leverage IC technology for lab-on-chip applications, creating affordable and portable medical diagnostic...
A novel, low-cost instrument capable of measuring surface water PCO₂ was designed for use in dynamic, shallow-water environments. The instrument was tested in the Yaquina River Estuary, a macrotidal estuary known to experience a wide range of conditions ranging from dominance by the coastal ocean during summer upwelling to substantial...
The purpose of this report is to briefly examine some of the laws
and regulatory programs which affect development in Oregon's estuaries
and their adjacent wetlands. Development, in this sense, includes
dredging, filling, bank stabilization, structures or other physical
alterations to an estuary.
Human activities may contribute to the eutrophication of surface waters by
providing nutrients to aquatic ecosystems. Phosphorus is frequently identified as a
nutrient that is limiting to most aquatic ecosystems under natural conditions. Sources of
phosphorus contributing to eutrophic conditions often include nonpoint sources that are
dispersed across the landscape....
Temperate coniferous forests, such as those that cover vast areas of the western US and Canada, have evolved to depend on cycles of disturbance for succession of species and overall ecosystem maintenance. Many of these forest systems are managed, often for timber production, where disturbances are of anthropogenic origin and...
This analysis is the study of Oregon's wildlife resources from
the period prior to white settlement up to the present time, including
critical projections, based on present trends and expected conditions
for both human and wildlife populations in the state up to the year 2010.
Prior to white settlement Oregon...
This research project compared teacher attitude using
the Pupil Control Ideology Form with student attitude using
the Arlin-Hills Student Attitude Survey. P.C.I. Forms
were collected from 834 teachers from 95 elementary Christian
schools in several states. A total of 1074 student
attitude surveys were collected from Christian school students
in...
Purpose of the Study
The education of culturally diverse children has been one of the
focuses of education since the early 1960's. One of the factors
influencing education's inability to deal with the needs of culturally
diverse children is the lack of teacher's foundational knowledge of
language and linguistics as...
Interpretive rangers serve as one of the major educational resources that visitors may encounter during their visit to a park or other natural area, yet our understanding of their professional growth remains limited. This study helps address this issue by developing an instrument that evaluates the beliefs of resource interpreters...
Noise induced hearing loss is a subject of growing
concern. Over the past 15 years, several well-documented
studies have been completed which express the relationships
between industrial noise exposure and damage to normal and
pathological ears. This research has provided knowledge of
considerable importance to developing successful hearing
conservation programs....
Temperature and water potential effects on the growth,
transpiration, total nonstructural carbohydrate (TNC) content, and
nutrient uptake of sudangrass (Sorghum vulgare var. piper) were
investigated in laboratory experiments. The effect of nitrogen supply
on the growth and nutrient uptake at constant soil water potential was
also investigated in this study....
Myxozoans are an enigmatic group of obligately parasitic, microscopic cnidarians. They diverged from their free-living relatives over 600 million years ago and have highly reduced genomes. However, they have retained nematocyst stinging cells which characterize the phylum Cnidaria. Free-living cnidarians utilize this cellular weaponry for defense and predation whereas the...
In this thesis I explore the ways in which twenty-first century Americans have access
to Geoffrey Chaucer and his works. I look at issues surrounding Chaucer within the
canon debate, high school history and literature textbooks, and Chaucer in popular
culture, such as in movies like A Knight's Tale. I...
One of many important physical properties that must be known
to understand transport phenomena in soils is pore size distribution.
Presently the pore size distributions of soils are most commonly
obtained from soil water characteristic curves. The soil water characteristic
curves are usually obtained by the pressure plate technique.
It...
Published March 1990. 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
Rapid and sensitive detection of stress hormones, such as cortisol and dehydroepiandrosterone (DHEA), can benefit the diagnosis of diseases related to adrenal gland disorders, post-traumatic stress disorders, chronic fatigue syndrome, and more. Stress hormones fluctuate in a circadian rhythm, the highest in the early morning and the lowest at night;...
Polygalacturonase produced by Fusarium oxysporum f. sp.
lycopersici was purified by chromatography on DEAE cellulose, CM
cellulose, and hydroxylapatite. Removal of large amounts of carbohydrate
by chromatography on hydroxylapatite did not affect heat
stability of the enzyme. A large proportion of the remaining carbohydrate
appeared to be covalently linked to...
This purpose of this qualitative study was to explore the role of the community
college chief academic officer and to describe how CAOs define successful
performance. It examined (a) experience candidates brought to the position; (b) job
duties and responsibilities; (c) knowledge, skills, and abilities required; (d) challenges
and barriers;...
Third Culture Kids (TCKs) are a rapidly emerging student population within colleges and universities. TCKs must balance the myriad of experiences of growing up among worlds with the amplified implications that it entails as college students (Van Reken & Pollock, 2010). This study attempts to fill the gap between the...
This qualitative thesis explored the experiences of self-identified Master-level graduate students who worked four or more years in higher education before enrolling into a student affairs graduate program. The researcher utilized a sample of six semi-structured student interviews along with a review of relevant literature. The data analysis yielded five...
This interpretive, descriptive qualitative study explores how graduate students in a student affairs preparation program make meaning of their role in supporting student spiritual development. Six one-on-one semi-structured interviews with six graduate students were conducted in this single-site study. Five prevalent themes emerged from the data, each playing a role...
:
________________________________________________________________________
LarryD. Roper
This interpretive, descriptive qualitative study explores how graduate
Research of an outreach to industry alumni to identify weak points in our graduates competencies and attempting to close those gaps through various recommending various resources for the administration to offer.
Mentoring can have a great impact on students during their higher education career. This influential role of mentors can be found valuable for a wide variety of populations, and has specifically monumental influences for underrepresented students. The NASPA Undergraduate Fellows Program (NUFP) aims to facilitate the mentor-mentee relationship for historically...
The value of the student experience beyond just the academic classroom setting has been well established by a number of scholars in the higher education field. In more recent years the literature has intentionally expanded beyond the “typical” student demographics in order to examine the unique aspects, challenges, and needs...
This thesis is a report of a phenomenological-informed study of public university student spiritual development. The research was based primarily upon semi-structured personal interviews and a focus group with undergraduate students at a large, public research institution on the west coast. Since the introduction of scientific objectivity into the academy...
The purpose of this study was to investigate the perspectives of education professionals who manage, coordinate, and instruct in the English Literacy and Civics Education Grant
(EL/Civics) Programs in Oregon community colleges. The study compared the EL/Civics Grant Program to the conventional English as Second Language (ESL) programs offered at...
:
_______________________________________________________________________
LarryD. Roper
The purpose of this study was to investigate the perspectives of education
While it can be said that peer mentor-mentee relationships in college can lead to meaningful connections and interpersonal support, there is a lack of literature about how exactly mentor-relationship connections are made. This study examines the relationship building strategies that peer mentors used to connect with their mentees in the...
College campuses are becoming more diverse now than ever before. Campuses, however, are not as prepared as they should be for the new students that are arriving. Changes need to be made to status quo processes and procedures, event planning, and classroom education in order to best serve current students....
Community colleges are experiencing a decline in state allocated funding. Traditionally, college administrators look for ways to cut expenditures and raise tuition and fees to make up for the shortfall. Using available land resources to generate a revenue stream may provide revenue for community colleges.
The purpose of this study...
This study investigated three questions: how, what kind of, and why were cross-border partnerships with non-US educational institutions developed at two public four-year US universities; how, what kind of, and why will cross-border partnerships with non-US educational institutions develop and/or change at US universities if nationalistic geo-political trends reflective of...
The purpose of this case study is to explore a mentoring program designed for African American male community college students at a Pacific Northwest community college. Community college practitioners can use the knowledge gained from this study as a best practice to increase the persistence and success of African American...
The purpose of this qualitative study was to learn about the perceptions and
experiences of students who graduated with the Associates of Arts/Oregon Transfer
(AA/OT) degree. This study answered the following questions:
1) How did the AA/OT degree attainment assist in the overall achievement
of goals?
2) How did AA/OT...
International students are a growing population at many institutions of higher education in the United States, and they face unique challenges in navigating both higher education and the United States as a whole. Though there is significant research about international students, few studies have examined how international students perceive student...
This phenomenological study explores what it means to teach part-time in community colleges in the United States. The increasing use of part-time faculty in community colleges and the concomitant emergence of a two-tiered faculty are discussed.
The study examines the nature of part-time work in the United States, thus providing...