The Oregon chub. Oregonichthys crameri. one of
Oregon's endemic freshwater fishes. is restricted to the
Willamette and Umpqua rivers and their tributaries.
Specimens from the two rivers have traditionally been
considered the same species. The goal of this study was to
re-examine that assumption and determine if the Willamette
Oregon...
The type of plasminogen activator (PA) secreted by bovine embryos was identified. Day 12 to 14 blastocysts were collected at slaughter from estrous-synchronized, superovulated and naturally mated crossbred beef cows. Embryos were either left as intact embryos (E) or microdissected into component embryonic discs (ED) and trophoblastic vesicles (TV). Intact...
This study investigated the influence of perceptual training on
volleyball serve-reception performance. The subjects were ten female high-school
volleyball players. Subjects were randomly assigned in equal
numbers to a control or an experimental group.
Both groups were tested on two occasions, prior to and following a
three-week perceptual training intervention....
This paper deals with finite abstract Witt rings in the case where
-1 = 1 in the square class group.
The results also apply to Witt rings
of quadratic forms over fields where √-1
is in the field.
The concept
of relative rigidity is studied in finite abstract Witt rings...
Euphausiids constituted the major food of five co-occuring species of rockfishes (Sebastes spp.). Copepods, decapods, cephalopods, amphipods, fishes and other pelagic prey were also consumed but were
less important to the overall diet. Two species, S. flavidus and S. diploproa, were relatively euryphagous, utilizing a high number of prey taxa....
Past disasters such as mercury poisoning in Minimata, and new problems such as tributyltin impacts on shellfish have maintained public concern about problems caused by chronic discharges of hazardous materials into marine waters (Clark, 1986; U.S. Congress, 1987). However, hazardous chemical spills in coastal waters typically escape public attention. Unlike...
Most recent research on stream amphibians in the Pacific Northwest has focused on associations with reach-level or stand-level environmental features. Little is known about landscape-level distributions of these species or landscape-level aspects of their life-histories. I used a watershed-wide sample and logistic regression to develop models and maps of probability...
This experiment was conducted to study the effects of three different forms of visual knowledge of results (KR) on maximal strength output in isokinetic exercise. The task used was an isokinetic extension of the knee, followed by a corresponding flexion. Four, six-subject experimental groups completed four testing sessions conducted over...
In competitive swimming a spread in time of only 0.10,
and 0.16 seconds constituted the difference between
finishing second and seventh, and first and eighth,
respectively, in the women's 50 yard freestyle at the 1993
NCAA Division III National Swimming & Diving Championships.
Based on data collected over a period...
Although research evidence clearly indicates support surface properties are a major factor contributing to fall risk among the elderly, investigations examining the influence of variations in surface conditions on the postural control of older adults during task performance have been limited. Thus, the primary purpose of the present studies was...
This study investigated the relative effectiveness of
three instructional strategies on the learning of an overarm
throw among preadolescent females. Subjects were randomly
assigned to one of the following instructional strategies:
a correct model supplemented with verbal cues, a learning
model supplemented with verbal cues, and verbal cues only.
The...
The purpose of this study was to discern the nature of legislators' perceptions about community colleges' abilities to generate revenues through alternative funding sources and the resultant effects on state allocations to these colleges. Selected community college-related staff members and legislative staff members in Idaho and Oregon were asked to...
For coaches to qualitatively analyze the performance of sport skills as executed by their
students, they must possess an internal image of the desired skill against which to make
comparisons (Hoffman, 1983; Pinheiro & Simon, 1992). Leas and Chi (1993) have
indicated that there are differences between novice and expert...
Each NWR within the U.S. Fish and Wildlife Service (FWS) National Wildlife Refuge System (NWRS) provides landscapes that contribute to conservation of wildlife and the habitats they depend on at local, regional, and national levels. The Integrated Pest Management Plan (IPMP) for a given refuge is a guide to how...
This dissertation centers on development of two web-based, in class learning tools, the AIChE Concept Warehouse (CW) and the Web-based Interactive Science and Engineering Learning Tool (WISE), and describes the investigation of student learning through their use. The intent of these tools is to promote deeper conceptual understanding in students...
The reaction of several primary amines with nitrite was investigated
with regard to the formation of N-nitrosamines. When reacted
in a low moisture system at 160°C with a 1:2 molar ratio of amine to
sodium nitrite, various primary amine hydrochloride salts were found
to give rise to heterocyclic nitrosamines. The...
This study was conducted to investigate the accumulation of dietary polychlorinated biphenyls (PCB's) by a Mt. Shasta strain of rainbow trout (Salmo gairdneri). A commercial mixture of PCB's (Aroclor 1254) was added to the diet at a level of 15 ppm on a dry weight basis. Accumulation of PCB's was...
Organoleptically, flavored yogurts appear to contain lower
levels of acetaldehyde than plain yogurt. This study was undertaken
to seek the reasons for this phenomenon by focusing on the analyses
of acetaldehyde production by yogurt culture bacteria in yogurt base
containing added sucrose and by performing other analyses such as
the...
Revised June 1994. 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
An important problem in molecular biology is to predict the secondary
structure of proteins from their primary structure. The primary structure of a
protein is the sequence of amino acid residues. The secondary structure is an
abstract description of the shape of the folded protein, with regions identified
as alpha...
The community college baccalaureate movement has shown strong growth across the country as a strategy to meet workforce shortages. A variety of forces are driving the movement including (a) employer demand for higher credentials; (b) geographical access to education; (c) lower cost education; (d) a trained workforce to compete in...
National farm legislation seeks to moderate the conditions of low farm incomes and commodity price instability. Homogeneity of producer response is generally assumed in national models of aggregate commodity supply. Differing conditions of soil, climate, production systems, costs of production, markets, etc., could cause disparate acreage responses to the commodity...
The purpose of this study is to illuminate the presence
and rhetorical effect of anecdotes in President Clinton's
major health care address. It is the health care debate that
shows most clearly how Clinton tries to direct a multi-level
campaign that attempts to identify his interests (passage of
the Health...
Published August 1981. 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
Revised January 1982. 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
Twenty-four years of records (1958-1981) from a commercial Angus ranch were utilized in a population analysis to characterize the herd as a biological unit. The herd averaged 632±129 cows and 123±6 replacement heifers with all replacement heifers and many bulls from within the herd. Life tables were calculated for seven...
There is significant interest in the fabrication of nano- and micro-structured silica with spatially ordered features, which exhibit enhanced optoelectronic properties with application to the next generation of display devices, semiconductors, and sensors. Currents methods of fabrication employ top down processes which use extremes of temperature, pressure, and power. There...
Several bulk starter media, consisting of two experimental blends and four commercial preparations, were examined for each medium's ability to grow, preserve, and/or recover lactic streptococcal starter cultures. Nonfat milk was used as a control. Results showed that cultures which had the greatest survival rate in frozen storage had been...
Two ash-flow tuff units of the late Miocene-early Pliocene Deschute Formation in central Oregon were studied in detail because of the widespread distribution, diverse compositions, and stratigraphic importance.
The Lower Bridge tuff is a double-flow simple
cooling unit that is poorly welded. The upper flow grades from rhyolite in the...
Full Text:
AN ABSTRACT OF THE THESIS OF
Debra May Cannon for the
Evidence exists that links a sedentary lifestyle with the emergence of chronic
diseases during adulthood. Reports indicate that many children and adolescents already
have risk factors for chronic diseases and the prevalence of obesity among children is at
an all time high. There are concerns that children may not be...
The Virtual Chemical Vapor Deposition (CVD) Process Development Project provides the context for the two areas of the research presented in this dissertation. The first area, generally referred to as feedback in this dissertation, focuses on student learning and the interactions of students and instructors that take place in the...
Researchers around the world use various solution-based deposition techniques to deposit thin films with multiple layers that typically require multiple rounds of deposition. Some such techniques include successive ionic layer adsorption and reaction (SILAR), and layer-by-layer (LBL) deposition.
One of the main issues with deposition of these types of films...
This phenomenological inquiry explored the experiences of library leaders and discipline faculty members engaging in a collaborative instructional change initiative focused on a process-based learning pedagogy and led by an academic library. The investigation’s purpose was providing insight and understanding concerning the: (a) library’s role in instructional leadership; (b) experience...
This study was designed to establish a baseline of data
regarding guidelines for curriculum development in the
preparation of health education specialists in health-care
delivery settings.
The survey method was utilized and an expert panel of
15 jurors was selected to respond to a 51 item questionnaire.
Professions represented on...
Oregon educational reform efforts are moving ahead with the support of legislation,
business and industry, and education. There has been little apparent consideration given to
the readiness of tenth graders to make career choices even though the research in the area of
career maturity indicates that students at this period...
For several years researchers have investigated how teachers’ beliefs
impact a classroom. Equally important to consider when striving to improve
education are the beliefs held by the students. College Algebra is an important
class for many collegiate students, and gaining an insight into their beliefs about
mathematics and desires for...
The effect of HTST pressure blanching processing parameters, as
compared to conventional steam blanching, on enzyme activity,
moisture, drip loss, shear force, sensory attributes and consumer
acceptability of frozen sweet corn were determined. Complete
inactivation of catalase and peroxidase required HTST treatments of
60 psi and 75 psi, respectively. No...
Dental disease is a very prevalent and costly disease in which the symptoms, not the disease, are currently being treated. The disease is caused by pathogenic oral bacteria, many of which are a part of the Mutans Streptococci. The objective of this thesis was to find a natural substance that...
Building upon Deci and Ryan's (1985, 1991) self-determination theory as well as
previous empirical work on motivation, the present study was designed to develop a
multifaceted 31-item Exercise Motivation Scale (EMS). A series of pilot studies were
first conducted in order to generate the 31 scale items. The EMS was...
Spectrometric detection systems for gas chromatography
(GC) based on gas phase ultraviolet absorbance
and fluorescence measurements have been developed and
evaluated in this research. Polynuclear aromatic compounds
(PNAs) are selectively detected by these systems.
Limits of detection for PNAs range from 4 ng to 90 ng
for absorbance determinations, and...
This study was undertaken to compile a comprehensive
review of the literature and to gain a better understanding
of the host-parasite relationship in corynebacterial kidney
disease of salmonid fishes. An indirect fluorescent antibody
technique was developed which allowed differentiation
of intra- and extracellular bacteria. This technique was
used in combination...
Date of coverage: 1965-1972. Sample numbers, weights of ashed tested samples, dates samples went into detector. End of book has Atomic absorption record for Zn.
Summary plankton and whole RA species collection and processing data for all samples other then OTB,MT,VM,EMPS. Only smooth data, samples from dip net, or others given from other locations. Date of coverage: 1965-1971.
Sample numbers, weights of ashed tested samples, dates samples went into detector. End of book has Atomic absorption record for Mn. Date of coverage: 1966.
The three important methods of approximation; interpolation,
least- squares, and Chebyshev, are extended into bivariate approximations.
A method of obtaining polynomial approximations for very
general classes of bivariate samples is developed. Bivariate least -
square approximations are reviewed and a method of developing bibariate
orthogonal sequence is derived. A method...
The statistical correlations between habitual diet and plasma
risk factors for coronary heart disease CHD were analyzed using
multiple regression. Thirty-one male subjects between 30-56 years
kept complete dietary records for 7 days. Daily means of nutrient
consumption were calculated using a computerized data base.
Fourteen independent variables (total kilocalories,...
The free fatty acids of Cheddar cheese are important components
in the over-all flavor and aroma of the cheese. Although the
more volatile fatty acids probably contribute most, there is reason
to believe that the higher fatty acids may contribute, to some extent,
in imparting typical flavor characteristics. Before the...
The goals of this dissertation are centered on understanding changes in Earth surface and climate systems through the use of geologic proxies as records of past changes in these systems. Specifically, this dissertation (1) establishes a new chronology for retreat of the Ross Sea sector of the West Antarctic Ice...
During the course of ripening, Cheddar cheese frequently develops
a flavor defect described as fruity. Recent work has indicated
that the use of certain starter cultures ultimately results in the
development of the defect as the cheese ages. The flavor compounds
responsible for the defect, however, have not been elaborated....
Data from the southern Cascade Mountains of
Oregon has been collected for application in computer
analysis of snowfields. Vegetation type, canopy
cover, slope, aspect, insolation, and snowfield
ground truth delineation are given consideration.
In addition, a procedure for transferral of data
onto Landsat imagery was derived.
Full Text:
EXTENT; SOUTHERN CASCADE MOUNTAINS, OREGON
by
DAVID BILL PARKER
A RESE;RCH PAPER
suiitted to
THE
This report summarizes the results of a field study of a population
of the Pacific mountain beaver, Aplodontia rufa pacifica, from
August 1965 through August 1967. The study site consisted of a 13. 5-
acre grid on a logged over area in the Coast Range Mountains of
Benton County, Oregon....
The main objective of this research was to determine the professional
in-service development needs of fourth, fifth, and sixth grade
teachers in the metropolitan school districts of Portland and Seattle.
The primary objectives for conducting this research investigation were
as follows:
1. To determine the professional in-service development needs
of...
The purpose of this study was to investigate the development of an interactive
aquarium design motivated by the employment of an innovative technology used in
scientific research. The study was informed by research on free-choice learning
describing the effects of interactive devices on visitor learning, engagement, and
attitudes. The researcher...
We survey the use of genetic algorithms in function optimization. We find that there are two distinct camps. Holland's camp seems to be interested in artificial intelligence uses of genetic algorithms and seems to have made only a few attempts at function optimization. Rechenberg's camp has concentrated on the optimization...
Reprinted July 1984. 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
In vitro growth of twelve isolates of Tither spp., the true truffles, was quantified by an agar-melt procedure. All isolates grew
poorly on media commonly used for the culture of mycorrhizal fungi, but responded markedly to the addition of nitrate, as well as other
inorganic ions, to malt and potato-dextrose...
In 2016, the state of Oregon passed landmark legislation that doubles the state’s Renewable Portfolio Standard and eliminates the use of coal-fired electricity for the state’s two major electric utilities by 2030. The legislation was the first of its kind in the country to outright ban the use of a...
The vast majority of U.S. farm bill spending goes to nutrition assistance, on the one hand, and farm safety net programs, on the other. Although these programs are a major part of federal government expenditures, controversial and governed by a common bill, they have rarely been quantitatively analyzed together. To...
Counselors, therapists and other mental health professionals are dedicated to finding more useful ways to prevent, assess and treat adolescents experiencing suicidal ideation. Recent research has shown that the use of Interpersonal-Psychological Theory of Suicide (IPTS) components in suicidal assessment and treatment have been effective for treating adults. However, a...
A key mechanism utilized by plants to make iron (Fe) available for
uptake is the reduction of Fe(III) to Fe(II) via an inducible, plasma
membrane-bound Fe(III) reductase. Genes encoding such enzymes have
not yet been isolated from plants; however, two Fe(III) reductases have
been cloned from yeast. FRE1 and FRE2...
The present study investigated the contribution of
attention to one-handed catching success. A group of
skilled (N = 8) and non-skilled (N = 10) subjects were
compared in their ability to process secondary task
information while executing a primary one-handed catching
task. On 40% of the trials, a secondary visual...
This investigation examined the possible role of musculoskeletal forces in the
human walk-run transition. In order to measure these forces a treadmill was constructed
which allowed the measurement of vertical ground reaction forces while subjects walked
and ran at prescribed speeds. Validation proved the device to be accurate and reliable...
Online learning has grown exponentially within higher education in the past decade, especially at community colleges. As online course offerings expand community colleges need to assess student learning in order to ensure quality learning experiences for students and for accreditation purposes. The purpose of this study was to compare the...
Hardrock mining is associated with severe environmental and economic costs. Of particular concern is acid mine drainage which has contaminated several thousand kilometers of streams across the United States representing a formidable danger to watershed health. Given the high risks of this activity, ensuring high regulatory standards may be an...
Published April 1977. 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
Revised September 1979. 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
Published July 1932. 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
Published November 1923. 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