Zero-field quantum beats were observed in
Lyman-Beta emission from hydrogen atoms formed by beam-foil
excitation.
The
energy dependence of the magnetic
substate relative cross sections
for the n=3, L=1 states of H was determined
for beam energies in
the range from 230 to 500 keV per atom.
The theoretical values...
The growth and production of brown trout, Salmo trutta Linnaeus, exposed to a concentration of 0.65 mg/l BOD (4.1 percent by volume) stabilized kraft mill effluent (KME) were studied from October 1973 until May 1974 in three experimental stream channels located near a kraft mill in Albany, Oregon. Growth rate...
Electronic structure calculations for free and immersed atoms are performed in the context of unrestricted Hartree-Fock Theory. Spherical symmetry is broken, lifting de-generacies in electronic configurations involving the magnetic quantum number m. Basis sets, produced from density functional theory, are then explored for completeness. Com-parison to spectroscopic data is done...
As part of the continuing investigation of the thermal cis- 1, 3, 5-hexatriene to 1,3-cyclohexadiene rearrangement, four new trienes and a cross-conjugated pentaene have been prepared and their thermal reactions studied. A new route to the synthesis of highly substituted trienes has been developed. The synthesis of three of these...
In recent decades, the occurrence of large, high severity wildfires has increased substantially in many parts of the world, including the western United States. These fires have the potential to impact water quality, aquatic ecosystems, and downstream communities for many decades. As such, it is increasingly important to understand the...
A multiple stage crosscurrent packed column suitable for gas-liquid
mass transfer was constructed and operated. The absorption
column consisted of a rectangular box constructed of plexiglass and
metal. Deflection baffles were positioned at regular intervals on
opposite sides of a central packed section to divert the gas phase
into the...
Introduction. The study was conducted in response to a need
for systematic analysis of the practice of granting academic credits
for prior off-campus learning. It was stimulated by a commitment
to the goal of facilitating student development and an interest in the
theory that such development can be enhanced through...
Observed intensity fluctuations in the emission of Starkperturbed
Ly-α and Ly-β radiation from beam-foil formed atomic
hydrogen are compared with theoretical calculations to yield information
on the relative cross sections for creation of a hydrogen atom into
the various l -levels for n = 2 and n = 3. It...
Acute toxicity bioassays (96-hr TL₅₀) were employed to determine
the tolerance of coho salmon (Oncorhynchus kisutch) to inorganic
chloramines at the alevin (yolk sac fry), yolk absorption, and early
juvenile life stages. Any influence of changes in temperature, pH,
and total alkalinity on the tolerance of juvenile coho for chloramines...
In 1976 and 1977 I examined three broad problems associated with the recruitment of young mallards, Anas platyrhynchos, in the Prairie Pothole Region of North Dakota. The three problems studied were: the effects of interspecific nest parasitism on production; the chronology and magnitude of total-brood loss during the brood-rearing period;...
The study was conducted to identify variables, from
among the theory related and demographic/biographic variables
included in the study, which were able to discriminate
between groups of male and groups of female freshmen
who differed in their level of self-actualization.
Five hundred and forty freshmen (277 males and 263
females)...
A. W. N. Pugin was a driving force in the Gothic Revival movement in England during the first half of the nineteenth century. He was an architect and a writer who expounded on the virtues of reviving Gothic architecture, not only for its reflection of the sacred mystery of ancient...
The overall purpose of this study was to investigate
certain aspects of the effectiveness of adult career programs.
The central focus was to compare the differences
in vocational self-concept crystallization among the participants
exposed to the classroom group program and the
individualized telecourse programs. Further information
was desired regarding the...
Five NAIA intercollegiate men's basketball teams and 53 players
served as subjects to determine the role pre-game anxiety played in
basketball game performance. The study involved four games in which
Western Oregon State College competed against other small colleges
in Oregon during the 19 -81 season. Performance in basketball was...
Breeding habitat of Harlequin ducks (Histrionicus
histrionicus) was studied in eastern Prince William Sound,
Alaska, during 1991 - 1993. Streams in Prince William
Sound were surveyed for Harlequin ducks and monitored with
mist nets. Physical characteristics of 24 Harlequin
breeding streams were compared to those of 24 streams not
used...
Franz Boas collected anthropometric data on approximately 15,000 people from over 200 Native American tribal groups between 1888 and 1902. Twelve basic measurements were taken: standing height, shoulder height, height to digit III, arm span, sitting height, shoulder width, head length and width, face height and breadth, and nose height...
The purpose of this study was to compare and evaluate personal
attitudes and perceptions, educational and vocational plans, activities
and satisfaction among students of two basic groups selected for the
study: a) financial aid recipients, b) non-financial aid recipients.
Subgroups in each category consisted of over-achievers and under-achievers.
Over-achievers were...
The purpose of this study was to determine the validity of MMPI scores that were estimated from CPI data. This was later expanded to encompass whether generally low California Psychological Inventory (CPI) t-scores below 25 were predictors of elevated actual Minnesota Multiphasic Personality Inventory (MMPI) profiles. The sample consisted of...
Research was conducted to determine the applicability of using the theory of
regionalized variables or geostatistics in characterizing the spatial variability of reference
evapotranspiration (ETr) over various climatic regimes for the state of Oregon. The state was
divided into five climatic regions based on topographic features and local meteorological
conditions:...
This study characterizes the production of hypogeous sporocarps (broadly referred to as truffles) by ectomycorrhizal fungi within Douglas-fir dominated forests that are considered typical of those found on the west slopes of the central Cascade mountains in Oregon. Three aspects of sporocarp production are addressed: 1) the distribution of total...
Myelin formation in the chick embryo sciatic nerve was examined
during development by analysis of three myelin lipids (cholesterol,
phospholipids, and cerebrosides) and of a myelin related
enzyme (2', 3'-cyclic AMP 3'-phosphohydrolase). The role of the
Schwann cell in controlling the synthesis of these myelin components
was studied by in...
Studies were conducted from 1962 to 1966 to investigate the
effectiveness of several practices in manipulating medusahead
(Taeniatherum asperum (Sim. ) Nevski) infested and/or dominated
ecosystems by releasing competition in favor of perennial grasses.
Several herbicide treatments were evaluated for selective
control of medusahead and cheatgrass (Bromus tectorum L. )...
Geographical data and information are virtually unlimited in their
quantity and are oftentimes scattered throughout a multitude of locations and stored
in various formats on a wide variety of platforms. The Oregon Coast Geospatial
Clearinghouse (OCGC) is a web-based central repository for metadata (data about
data) corresponding to collected data...
Ragay Gulf and Burias Pass are among the traditional fishing grounds of the
country being considered by the government for an integrated approach to fishery
management (Smith, et al., 1980; Samson, et al., 1977, World Bank, 1976). The
Department of Marine Fisheries, College of Fisheries, University of the Philippines in...
Portland, Oregon Is in the northern end of the Willamette River Basin and
Valley. The Willamette River caries the runoff discharge from approximately 12,000 square
miles of basin area, and flows northward where it bisects the Portland metropolitan area
and enters the confluence with the Columbia River. However, high discharge...
Chromosome complements of ten species of shorebirds, order
Charadriiformes, were analyzed and compared. Mitotic chromosomes
from the pigeon guillemot (Cepphus columba), Heermann's gull (Larus
heermanni), the California gull (L. californicus), the western gull
(L. occidentalis), the American avocet (Recurvirostra americana),
the western willet (Catoptrophorus semipalmatus), Wilson's snipe
(Capella gallinago), the...
The purpose of this study was to develop means to facilitate
the detection of staphylococcal enterotoxin and to elucidate factors
that influence enterotoxin formation. It was found that semipurification
flat-gel electrophoresis in a water-cooled apparatus
was more efficient than CM-cellulose and Sephadex column chromatography
currently used to separate toxin from...
A mechanism is a constrained kinematic chain composed of
gears, links, cams, or the like. Mechanisms are the building blocks
of all machines, and, as such, their evaluation is of considerable
importance to the mechanical designer. Because the mathematical
analyses of systems with four or more moving members has been...
Field and controlled environment chamber studies were carried out
to evaluate modes of action of post-harvest treatments on the development
and seed yield of cool season grasses. Red fescue (Festuca rubra
L.) was used as the primary test species.
There was no difference in total biomass production of red fescue...
This thesis includes four separate studies. The first two studies assessed edge effects in a
700-year-old forest. After 20 years of exposure, epiphyte assemblages on the clearcut edge
were similar to those of the forest interior, but there were some differences in vertical
distribution patterns. Several species restricted to the...
Root rot of ponderosa pine caused by Armillaria mellea was
studied in a pine forest that had been under management for 30 years
in Klickitat County, Washington. Information sources included
disease survey, detailed observation and description of specific
disease situations, and examination of roots in situ and removed.
Roughly circular...
For twenty-two years, I observed trees and shrubs planted for windbreaks in eastern Oregon. In this paper some conclusions are drawn, although I will be the first to emphasize that the knowledge we need and do not have would fill a much more extensive report. My observations and field work...
The objective of this study is the development and
verification of an analytical solution for an unsteady
flow field partially occupied by a permeable structure.
Flow is induced by a small amplitude incident wave
train and the permeable structure may contain multilayered
anisotropic but homogeneous material. The analytical
solution developed...
The study of nonlinear vibrations of systems having two
degrees of freedom has met considerable attention during the past
few years. Nonlinear symmetrical systems have received most of it.
Normal mode motion of a system is defined as a periodic motion
such that the masses of the system assume repeated...
A theory is developed to provide an analytical solution to an
unsteady flow field which is partially occupied by a porous structure.
The flow is induced by a small amplitude incident wave
train. The porous structure may contain multi-layer anisotropic but
homogeneous media. Three typical porous structures are investigated:
a...
This thesis deals with the effect of pressure coupling on the
stresses in shells having geometric discontinuities. The problems
are, 1) cylinder with an axially symmetric thickness change and
2) cylinder with a hemispherical end closure. Solutions to the
above problems are based on differential equations that included the
straightening...
The dynamics of a cross-flow, packed tower were investigated
as a new alternative for gas-liquid contacting.
At the present time there are two methods of gas-liquid
contact, co-flow, and counter-flow, both having known
limitations. This investigation studies cross-flow contact
in an effort to eliminate the lower limits of gas-liquid
flow...
The purpose of this work was to investigate possibilities
of raising lavender in Oregon of desirable qualities and.
yield. This was carried out by analysis and study of the
properties of the oil obtained therefrom in order that a
comparison with other kinds of lavender oil might be made.
It...
This study includes an analytical solution to the wave-current
barrier interaction problem and large scale experiments to validate the
theory.
The boundary value problem is solved mathematically by characterizing
the flow field and barrier motion separately, then coupling
the relationships with the appropriate kinematic and dynamic boundary
conditions.
The flow...
A cascade crosscurrent column, packed with Pall rings, was employed
for ammonia absorption from ammonia-rich air phase by
contacting with water. Absorption efficiency was presented as
the percentage of NH₃ removed as well as the volume of a transfer
unit.
A review of the literature concerning the theoretical and experimental...