This study was undertaken to find means of separating the
morphologically similar species of North American Trixagus and to
bring together information on Trixagus and Pactopus.
A key to separate the world's eight genera of extant Throscidae
is presented for the first time. A key to the five species of...
During the GEOSECS cruise of the R/V KNORR, July 1972-April 1973, a very complete and high quality nutrient data set was acquired for the Atlantic Ocean. One hundred and twenty-one hydrographic
stations were occupied throughout the Atlantic providing an
internally consistent picture of the nutrient dynamics for this ocean.
The...
Seven socioeconomic factors common to two Oregon
communities, Beaverton and Corvallis, were examined and
compared for the influences they might have on participation
in recycling programs. Sampling technique involved
the use of a prepared survey questionnaire through which
the data necessary for the appropriate statistical methodology
used in the study...
The gamma contribution to reactor afterheat
depends on gamma energy since high-energy commas are
more likely to escape from tilt. fuel. The objective of
this work is to investigate the gamma-energy spectrum
of a pure U-235 fission reactor.
Fission-product nuclides are first listed in order'
of importance as contributors to...
The need for and problems related to string processing are
discussed and a definition of the term "string" is derived. A
brief review of some existing string processing systems leads
to the presentation of a design for a string processing extension
to the programming language Pascal. A rationale for the...
Ecological factors associated with the relictual distribution of
the endemic shrub Kalmiopsis leachiana (Ericaceae) were investigated.
A prostrate evergreen species with small coriaceous leaves,
K. leachiana is restricted to two disjunct populations in the Siskiyou
Mountains and southern Cascade Mountains of southwestern Oregon,
USA. Exact distributions of individual populations were...
Ultrastructural analysis and chemical inhibition studies were
carried out on first cleavage of Mytilus zygotes to determine possible
relationships between the mitotic apparatus and the cortex during
polar lobe formation.
The stages of mitosis correlated with the appearance of the
polar lobe were first determined by light microscopy. The polar...
Cultural and developmental characteristics of a collection of
Anthracobia melaloma with a brown hymenium and a barred exterior
appearance were examined. It grows well in culture on CM and
CMMY agar media and has a growth rate of 17 mm in 18 hours. It is
heterothallic and produces asexual multinucleate...
Two numerical methods are presented that can be used to solve
second order nonlinear ordinary differential equations with periodic
boundary conditions. One of these methods is a shooting method developed
solely for the periodic problem. The other, "quasilinearization,"
is a method applicable to a wide variety of problems. It is...
The study was undertaken for the purpose of investigating the
relationship between clothing behavior and sex, Japanese and American
cultures, feminine or masculine personality types, and sex-role
concepts. The aspects of clothing behavior included in the study are
interest, tolerance, acceptance, and innovation of uni-sex clothing
items, and the femininity-masculinity...
Note: From here on Minimum Pollution Product and MPP will be used
interchangeably.
This study was initiated to develop a trademark which could be
registered and used for advertising purposes by companies producing
and selling products which are minimum pollutants relative to competitive
products in the same market.
One of...
To determine whether a homologous neurohormone, arginine
vasotocin (AVT), can elevate the occurrence of clasping behavior in
male rough-skinned newts (Taricha granulosa), intact, sexually inactive
males were injected with either AVT or saline. The incidence
of courtship was elevated in the group of males injected with AVT,
but not in...
Marine geophysical data from the continental margin of Baja
California and the Gulf of California, and geological and geophysical
data from the Baja California Peninsula and mainland Mexico, outline
the major geologic and tectonic features of the Baja California
Peninsula and the surrounding areas from 24.5° N. Lat. to 27.5°...
The vegetation surrounding a nest shades and insulates the incubating
bird in addition to concealing it. The vegetative material
that makes up a nest insulates the eggs from its warmer or cooler
surroundings. Since a Killdeer builds a stone-lined nest on barren
ground, both egg and adult are subject to...
Juvenile coho salmon (Oncorhynchus kisutch) were orally
immunized against the bacterium Flexibacter columnaris (formerly
Chondrococcus columnaris), the causative agent of columnaris disease
in fish, with a vaccine-food preparation containing formalin-killed
cells. Fish immunized for 1, 2, 3, and 4 months were challenged
with selected concentrations of F. columnaris by exposure...
The objective of this thesis is to develop criteria for a data
acquisition system for electrical machinery capable of sampling a
signal every 0.2 msec with a desired accuracy of 0.1%. The system to
be measured includes both AC and DC voltage and current signals from
several points. The main...
There were two viable theories of generation, preformation
and epigenesis, existing in the Seventeenth and
Eighteenth Centuries. Due to their irreconcilable nature,
they were often at loggerheads during this time interval.
The status of these generation theories can be effectively
understood in terms of Thomas Kuhn's conception of preparadigm
science....
Jean Baptiste Lamarck (1744-1829) is considered here in the
context of the Enlightenment effort to develop a science of man. His
Philosophie zoologique (1809) and the Systeme analytique (1820) are
the two principal relevant works examined in depth to discover how
he meant to base a science of man on...
This study explored the relationship among marital role expectations,
religiosity, and other variables including age, dating status of
subjects, living arrangement, marriage plans and parents' marriage.
Data were obtained from a sample of 460 Oregon State University
students in April, 1976. They were primarily young students, 18 - 19
years...
Photoperiod controls the duration of both the fourth and fifth
stadia in Agalliopsis abietaria Oman. Development was arrested in
the fourth stadium unless short days were given during the second
and third instars; a short arrest of development occurred if the short
days did not begin until the fourth instar....
During a 13-month period starting in October of 1976, adult
male rough-skinned newts (Taricha granulosa) were collected periodically
to study seasonal changes in reproductive status. Plasma
androgen concentration, measured by radioimmunoassay, is elevated
during autumn and spring (about 50 ng/ml). Winter and summer levels
are considerably lower (less than 10...
To determine whether meiotic maturation of ovarian follicles,
ovulation, and oviposition are influenced by male mating behaviors,
female rough-skinned newts (Taricha granulosa) were captured prior
to contact with males and maintained in simulated pond conditions.
Females were either exposed to male courtship and inseminated or
were isolated from male contact....
The purpose of the study was to investigate the relationships
among satisfaction with clothing, satisfaction with physical appearance,
concern over weight, self-esteem, and participation in leisure-time
activities among a sample of full-time homemakers.
To test these relationships, five measures were used. Satisfaction
with clothing was measured by comparing the actual...
Two sampling lines were established in the intertidal region at
each of three geographically separate sites on the coast of Oregon.
Each sampling line, which was positioned in the zone dominated by
the brown alga Hedophyllum sessile, was one meter in height and
extended 50 meters horizontally. Information was sought...
We investigate in this thesis, the problem of stability
of thermo-viscoelastic fluid flow between rotating
coaxial cylinders. By using the thermo-viscoelastic
constitutive equations given by Eringen, we reduce the
equations of motion into a form suitable for stability
analysis. The course of reduction which we follow yields
some interesting intermediate...
This research details the adoption, implementation, and outcomes
of Project C. 0. R. E. (Careers Oriented Relevant Education)
in District #19 junior high schools in Springfield, Oregon. Information
was gathered from teachers, students, and parents associated
with each District #19 junior high school via questionnaires, interviews,
and by field observations....
The purpose of this study was to determine whether one ear
of a profoundly deaf student could duplicate a response rate
similar to the response rate achieved by the opposite ear on an
auditory training program. The formal hypothesis of this study
was: a student that reaches criterion level of...
This research paper is an analysis of the electric energy industry
in Mexico since its inception in 1879. The research is based entirely
on library sources plus documents secured from the Federal Electricity
Commission of Mexico. Only minimal documentary evidence is
available in English, consequently the Oregon State University library...
The feeding habits of the lanternfishes Tarletonbeania crenularis, Diaphus theta and Stenobrachius leucopsarus were studied by analyzing 1,735 stomachs from 54 collections from the slope waters off Newport, Oregon. Forty-one taxa of food items were identified. Euphausiids
(Euphausia pacifica), copepods (Calanus spp. and Metridia lucens) and amphipods (Parathemisto pacifica) were...
This study was initiated in the Spring of 1966 for the purpose of
determining the present status and effectiveness of imported parasitic
wasps of the pea aphid in the Willamette Valley of western Oregon.
The pea aphid is a serious pest throughout the pea and alfalfa
growing regions of the...
Joseph Reddeford Walker conducted
a party of men across the Sierra Nevada to the
Pacific coast of California in 1833. Previous
interpretations of the portion of the route
from Humboldt Sink, Nevada, to the San Joaquin
River, California, are not satisfactory. A
body of descriptions of the terrain traversed
exists...
The primary purpose of this study was to explore the relationships
between the variables of sex, age, sibling status, age relationship
of sibling, age spacing between siblings and sex-role preference among
preschool-aged children.
Seventy-one children, 32 boys and 39 girls, ranging in ages
from two-years-eleven-months to five-years-seven-months, served
as subjects....
The purpose of this study was to investigate the relationships
that were hypothesized to exist between the variables birth order,
family size, and parents college attendance and the dependent variable,
college graduation. The three general hypotheses tested were:
1. A positive relationship exists between a given position in
birth order...