The influence of planting patterns and plant spacings on grain
yield in field corn (Zea mays) was studied at the Oregon State University
Botany and Plant Pathology Field Laboratory near Corvallis,
Oregon in 1969. Plant characteristics and yield components studied
included plant height, ear height, number of ears, ear weight...
A circuit designed to generate and maintain a constant magnetic
flux is presented by using a sample-data control system, instead of a
continuous control system.
A Hall generator is used as the magnetic sensing element, and
is operated with a pulse bias to allow a large output. The output of...
The purpose of this investigation was to compare some of the
properties of a spore-forming mutant of Bacillus cereus 569R with
the wild type. The strains were grown under identical conditions in
liquid medium. The mutant, strain 45, was characterized with
respect to growth rate, pH changes in the medium,...
In this thesis a method is presented for maintaining the left
ventricular wall stress of the human heart at a constant level during
the systole (active portion of the heart's cycle). This constant stress
level makes it possible to take isotonic measurements on the heart
muscles.
The left ventricle of...
This thesis documents a new language which facilitates
the construction of Turing machines. The language translator
is written in Compass and has been debugged and is
available for use on the CDC 3300.
Righting behavior was examined in the asteroids Henricia
leviuscula and Leptasterias aequalis by repeating a standard laboratory
righting trial with a large number of individuals of each species,
and analyzing the observations made by statistical methods. Detailed
observations on the righting method, including leading pairs of
arms and righting time...
A study was made to evaluate the effect of different rates of N
fertilization on Nugaines wheat. The variable N treatments provided
different N regimes as a basis for evaluating potential diagnostic
tests for assessing the N status of the wheat plant. The crop was
grown in Lane county during...
Criteria for the design and construction of a prototype streamside
incubator for Pacific salmon (Oncorhynchus) eggs and alevins
are described. Operation of the prototype and methods of transporting
freshly spawned salmon eggs from distant sources are reported.
Effects of water velocity, stocking density, and substrate type
on the growth, development,...
Understanding marketing research begins with understanding marketing
and marketing management. This study builds a concise normative
model for marketing management and infers from it the scope and
nature of marketing research and the role various organizations should
take in conducting it. Marketing research activities in the Pacific
Northwestern forest industry...
Rhabdocoels of the genus Paravortex are parasites of marine
molluscs. The bent-nosed clams, Macoma nasuta(Conrad, 1837) of
Yaquina Bay, Lincoln County, Oregon are commonly infected with a new
species of Paravortex. The morphology of the adult worm has been
described and it has been compared to the other three species...
A cruise of the R/V Yaquina off Oregon during June and July of
1968 provided data for a study of the relationships of hydrographic
and chemical parameters to estimates of biological activity. The
emphasis was on carbon and nitrogen reservoirs. Phytoplankton pigments,
nitrogen and C/N ratio were used along with...
Plecoptera were collected from four sampling stations selected
to represent a range of conditions on Oak Creek, a small woodland
stream originating in the foothills of the Oregon Coast Range. The
elevation of Site I was 700 ft. while the lowest site was located at 225
ft. Monthly benthos samples...
The volatile components of rye flour were isolated
by steam distillation and trapped in cold traps under
vacuum. After preliminary tests indicated the presence
of carbonyl compounds, the distillate was reacted with
2,4 dinitrophenylhydrazine to convert the carbonyl compounds
to their stable derivatives, 2,4 dinitrophenylhydrazones.
Three classes of monocarbonyls were...
Taste responses of the Columbian black-tailed deer,
Odocoileus hemionus columbianus (Richardson), were determined
by use of the two-choice preference test method, where the choices
were tap water and tap water-chemical solutions in ascending
concentrations. The chemicals tested were: the sugars, glucose
and sucrose; the sodium salts of chloride (NaC1) and...
The relationship of temperature and salinity to protein synthesis
was determined for cells of Vibrio marinus, MP-1. Protein synthesis
was measured by the incorporation of radioactive proline into
hot trichloroacetic acid precipitable material. At all salinities protein
synthesis occurred at 15°C and 20°C but not at 25°C. The critical
temperature...
The removal of ozone from an air stream by activated-cocoanut
charcoal was investigated from the literature and experimentally.
The experimental investigation showed that activated-cocoanut charcoal
can be used to remove concentrations of ozone less than 1.0
ppm with high efficiencies. The mechanism of the ozone removal
appeared to be a...
The purpose of this paper was twofold, (1) to determine the
distribution of the infective stage of Ceratomyxa shasta (Noble) in the
Deschutes River basin, and (2) to study the ultrastructure of the spore
stage of the protozoan parasite.
Liveboxes containing juvenile rainbow trout were placed at
specific test points...
A study was conducted to determine the quantity and distribution
of bark debris resulting from log rafting. Three distinct problems were
studied: (I) the quantity of bark dislodged from the logs while being
placed in the rivers and during transport in log rafts; (2) the percentage
of the bark that...
The nature of the bioluminescence of Gonyaulax catenella is
similar to that observed for other dinoflagellates in culture, showing
photoperiod-entrained rhythms of luminescence and stimulability
with relatively constant luminescent capacity during scotophase. G.
catenella is very sensitive to stimulation and photoinbibition. The
nature of the response to stimulation by bubbling...
Due to the present trend to utilize both virtual memory and
paging for the implementation of storage for large-scale computer
systems, it is of interest to analyze the pertinent parameters
associated with the operation of a paging system. This paper
describes the paging process and determines the effect of variations...
It is often necessary in communication systems to detect very
small signals that are buried in noise. One device used to accomplish
this is a lock-in amplifier. Initially the theory of operation is considered.
Then the circuit design of a low cost lock-in amplifier is
given. The amplifier, employing linear...
Objectives of this study were to determine differences in
herbage production of three seral stages of three habitat-types.
Field studies were conducted in 1967 and 1968 on the Squaw Butte
Experimental Range.
Twelve, 400-square-foot, paired exclosures were established
in each habitat-type. Herbage was clipped from four, 48-squarefoot
samples in one...
Reproductive characteristics of introduced eastern cottontail
rabbits, Sylvilagus floridanus (J. A. Allen), were determined from
486 rabbits collected between January 1, 1968 and June 30, 1969,
near Corvallis, Oregon.
Sex ratios were 1:1 for all rabbits collected and for all embryos
20 days or more gestation. On the basis of...
Studies were conducted on the causes of low germination of
monogerm sugarbeet seed grown in western Oregon. Emphasis was
placed on the identification and measurement of endogenous inhibitors
as related to the germination and vigor. Both qualitative and quantitative
analytical methods were applied to examine the organic substances
in the...
Lateral diffusion of S-ethyl N-ethylthiocyclohexanecarbamate
(cycloate)¹ is essential for satisfactory weed control with injection
type incorporation in sugar beet (Beta vulgaris Linn.) production.
Previous field experience with injection incorporation has indicated
that sufficient lateral diffusion for satisfactory weed control has not
occurred under all field conditions. Researchers who have been...
Development of long-range nuclear weapons in recent years and
the subsequent threat of nuclear war has led to an increased awareness
of the need for civilian protection. Adequate shelter design can
provide substantial protection against delayed radioactive fallout.
Protection can generally be greatly increased by more massive roof
construction to...
Mycelial growth of Endothia parasitica was
stimulated by
relatively high concentrations of CuSO₄ in potato dextrose agar
medium (PDA).
Stimulation of E. parasitica by the high levels of
CuSO₄ and the relatively poor growth of this fungus on
standard culture
media suggested that stimulation might be due to
interaction of...
Southern pine and Douglas fir veneer samples were dried in air
under the following conditions: air temperatures were 350, 600, and
750°F; air velocities were 50, 100, and 150 feet per second, and
angles of impingement of air against the veneer surfaces were 0°,
45°, and 90°. The resulting drying...
The effects of an 11-week jogging program on the plasma lipid
fractions and clotting time of 19 late adolescent males (18 to 19
years) were investigated. Total lipids, triglycerides, total and free
cholesterol, phospholipids, non-esterified fatty acids, and clotting
time of plasma were determined. Statistical analysis was applied
to the...
The relationship of x-ray tube housing temperature to duty
cycle was studied for a superficial therapy x-ray installation, a
dental radiographic installation, and a rotating-anode medical diagnostic
installation. Thermistors were used to measure the tube
housing temperature at points selected to be representative of
thermal conditions on the surface of...
The purpose of this study was to examine the meal management
practices used in the homes of selected home economics graduates.
A total of 296 questionnaires were mailed to Oregon State University
home economics graduates for the years 1945, 1950, 1955, and 1960.
Forty-nine percent (146) of the questionnaires were...
A study of sedimentary structures and sediment texture of
beach and continental shelf sediments provides a basis for the interpretation
of the recent history of sedimentation on the Oregon continental
shelf. The texture of various sediment types suggests that
coastal rivers supply a considerable quantity of very fine sand in...
Unit dose drug distribution systems have been established in a
number of hospitals during the past several years. Such systems show
promise in providing better and safer patient care. They also seem to
minimize the non-professional aspects of drug handling by nurses,
thus enabling them to spend more time with...
Two experiments were conducted to study the effects of
melengestrol acetate (MGA) on inhibition of estrus, post-treatment
conception rates in heifers and rats, and MGA given during gestation
on the reproductive performance in rats. MGA was administered
orally to Holstein heifers and by subcutaneous injection to Sprague-
Dawley rats.
Twenty-four...
The effects of two patterns of logging on the intragravel environment were studied in three Oregon coastal streams between June 1968 and June 1969. The watershed of one stream (Needle Branch) had been clearcut, and that of a second stream (Deer Creek) cut in staggered settings in 1966. A third...
The primary purpose of this thesis is to determine the economic nature of low incomes on low-income farms in western Oregon. An economic model containing variables that contribute to family income is developed for farm operators in the study area. Regression analysis is used to determine the significant variables contributing...
Evaluations of body form and measures of milk production were
recorded for 188 Holstein lactations and 77 Jersey lactations in the
Oregon State University Dairy Herds. Components of body form
included general appearance, dairy character, body capacity, and
mammary system and 34 sub-components of these four traits plus body
weight...
Heartwood samples of Pacific Coastal Douglas-fir (Pseudotsuga
menziesii var. menziesii) and Rocky Mountain Douglas-fir
(Pseudotsuga menziesii var. glauca) were rated for relative liquid
permeability, and evaluated for kraft pulping characteristics.
Highly impermeable wood of the Rocky Mountain variety was termed
"refractory," while the pervious wood of the Pacific Coastal variety...
Growth and reproductive patterns of the common lanternfish,
Stenobrachius leucopsarus, are described by length frequency
analysis, otolith analysis and examination of ovaries.
Length frequency analysis, employing the probability paper
method of analysis of polymodal distributions, of three and one-half
years of monthly midwater trawl collections off Oregon showed that
fish...
Most studies of bacteria in water have concerned public health; little attention has been given to organisms which are indigenous to
the aquatic environment. Myxobacteria are known to occur in soil,
in the marine environment, and several have been studied in relation
to diseases of salmonid fishes. However, little information...
The stability of a third-order, nonlinear system with a
saturation characteristic was studied by applying the second method
of Liapunov, which is the most general approach currently used for
dynamic systems.
This thesis presents (1) the analysis of a third-order, nonlinear
system, (2) a suitable Liapunov function, generated by the...
Two experiments involving 33 Holstein cows were conducted
for the primary purpose of studying the effects of flumethasone (a
synthetic glucocorticoid) on milk and milk constituent yields. The
secondary purpose was to compare udder health, reproductive performance,
and body weight changes of cows on flumethasone therapy.
Nine Holstein cows were...
Numerous fishery researchers have attempted to preserve viable fish sperm, but only three investigations were successful in the fertilization of fresh eggs with frozen and thawed sperm: Blaxter (1953); Hoyle and Idler (1968); and Graybill and Horton (1969). Significant advances reported in this thesis were: the development of suitable life...
The primary purpose of the study was to identify the demand
for processed salmon from the West Coast. The basic approach in
the demand analysis was to identify those variables that determine
the supply and demand for processed salmon. An econometric model
was established containing the supply and demand equations...
Farmer cooperatives have often maintained inflexible capital structures which severely restrict members' freedom to allocate their own capital in a most profitable manner. This study was conducted to provide insights into how cooperative finance programs might be modified to provide increased capital and, at the same time, be more acceptable...
Previous investigations have shown that exposure to DDT results
in increased activity in soluble and microsomal enzyme in insects.
These responses in DDT-resistant Triatoma infestans
nymphs and in adults of DDT-resistant Musca domestica (the common
house fly) are accompanied by increased RNA and protein synthesis.
The phenomenon has been termed...
At the time of this study 19 states have entered into agreements, one state agreement is pending and one state has submitted its proposal for entering into an agreement with the Atomic Energy Commission for the purpose of assuming regulatory authority over (1) byproduct, (2) source and (3) special nuclear...
A low-energy, low-exposure-rate, guarded-field ionization
chamber system with a sensitive volume of approximately 1040 cm³ and an exposure-rate range from 60 mR/h to less than 0.5 mR/h
was designed, constructed and calibrated. The calibration was
effected by constructing and calibrating a 60 cm³ volume transfer
chamber of similar design against...
A pulse reader for ionization chambers has been developed,
tested, and calibrated. An insulated gate field effect transistor
(IGFET) was used to detect the pulses and Victoreen Model 362
Pocket Chambers were used as ionization chambers. The energy
dependence of the Victoreen Model 362 Pocket Chamber was determined
to be...
This thesis reports the results of a study on the influence of biologically
stabilized kraft mill effluent (SKME) on the food relations and
production of juvenile chinook salmon, Oncorhynchus tschawytscha
(Walbaum), in laboratory streams. Experiments were conducted at
the Oak Creek Fisheries Research Laboratory, Oregon State University,
during 1967 and...
The effect of soil water suction and soil temperature on rates
of transpiration, photosynthesis, respiration and nitrogen fixation of
soybean (Glycine max. Merrill, var. Chippewa 64) seedlings was
studied. A special apparatus was developed in which the soil water
suction of several cells with soybeans growing in them could be...
In this thesis, characteristics of coupled trigonometric transmission
lines are studied, based on the general theory of nonuniform
transmission lines. The four-port transmission matrix parameters
of the coupled trigonometric transmission lines are derived from the
even and odd mode waves. Two applications of coupled trigonometric
transmission lines are presented; one,...
Adula californiensis, which inhabits mudstone along the open
coast and in Yaquina Bay, Oregon, is subjected to extremely varying
conditions. Laboratory experiments of a factorial design were used
to investigate the effects of temperature and salinity on survival,
growth and respiration during early development.
The rate of development to the...
Attempts were made to rear Crambus topiarius Zeller,
Euchromius ocellus (Haworth), Crambus bonifatellus (Hulst) and
Crambus trisectus (Walker) on non-aseptic meridic diets containing
wheat germ or pinto beans as basic constituents. Various methods
of diet presentation and types of rearing containers were used. Shell
vials and plastic cups used as...
Samples of benthic organisms off the coast of Oregon, taken
from depths varying from 50 to 2900 meters, have been analyzed in
terms of diversity at a given station, and similarity and ecological
distance to other stations. Estimates of epifauna abundance were
also made. In the analysis an important distinction...
The extraction of tantalum fluoride complexes by large cationic
extractants (tetraphenylarsonium ion, TPA, and crystal violet) and
by methyl isobutyl ketone (MIBK) has been investigated as a function
of fluoride concentration using ¹⁸² Ta as tracer. Extractions by the
cationic extractants into chloroform were carried out in the absence
of...
The purpose of this study was to assess changes in attitudes
toward behavioral understanding, marital role expectations, and self
concept in a selected group of high school girls. These subjects
were enrolled in a one semester child development course which
included observation and participation experiences with young children.
The subjects...
The purpose of this study was to investigate the relationship
between specific mother-child interactions and selected aspects of
language development in "disadvantaged" children.
The subjects were 19 preschool children in a summer Head
Start program in Denver, Colorado. Their ages ranged from four
years-nine months to five years-seven months. Eighteen...
The purpose of this study was to assess change in self concept,
marital role expectation, and behavioral understanding in high
school students enrolled in a family life course.
The subjects were two groups of high school students from an
only senior high school in a school district. The experimental group...
The paper is a study of (i) the realization of the gyrator,
(ii) active filter synthesis using gyrator.
Several realization methods of the gyrator are summarized.
A practical gyrator composed of two operational amplifiers was built
and tested. The experimental results are shown. Two RC-gyrator
synthesis techniques are derived and...
Pea streak virus (Marmor trifolii Holmes) is widespread and
occasionally destructive in Eastern Oregon and Washington, and in
many other pea growing areas. Since control by the use of insecticides
to kill the insect vector is only partially successful, resistant
varieties of peas are needed.
In a study to confirm...
Complete larval histories, consisting of a prezoeal stage, two
zoeal stages and one megalopal stage,are described for four species
of porcellanid anomurans. Larvae of three species were reared
from embryos through the megalopa stage in the laboratory. Larvae
of the fourth species were collected from the plankton and reared to...
This thesis discusses the field of products liability as it
relates to the electronics industry. The historical development of
products liability is traced and the various legal theories are
examined. These legal theories and background are then used to discuss
the judicial obligations imposed upon the manufacturer and
seller of...
In communications it is often desirable to recover a signal
hidden in noise. The techniques of correlation are often employed
for this purpose. Initially, the basic formula and properties of correlation
including an approximating formula are presented. Then the
description, design, and construction of a DC to 500 KHz electronic...
A thick sequence of intercalated andesite and basalt flows, tuffs, and volcanic sediments crop out in the Fly Creek Quadrangle and the north half of the Round Butte Dam Quadrangle. This sequence was deposited in the ancestral Deschutes River Valley along the east flank of the Cascade Range during the...
Morphological changes which occur during tentacle formation
have been described in the colonial athecate hydroid Cordylophora
lacustris. These changes involve an outpocketing of mesoglea into
a finger-like extension of the hydranth. Gastrodermal cells line the
inside of this extension of mesoglea while ectodermal cells cover the
outside. Electron micrographs reveal...
Lithia-silica compositions between lithium disilicate and pure
silica were explored theoretically and experimentally, with special
emphasis on structural miscibility. Diffusion couples of vitreous
materials were prepared and annealed. Best success in preparation
was achieved by using electron-bombardment heating in vacuum to
melt the less refractory glass and let it solidify...
The treatability of waters from four log ponds in Oregon by
physical and chemical treatment methods
was investigated.
Treatment processes included sand filtration, activated carbon contact and
coagulation with aluminum sulfate.
Preliminary studies were made at each log pond to determine
the homogeneity of the pond water for sampling
purposes...
The purposes of this study are:
1. To determine guidelines for producing 8mm continuous
loop films through the production of
loop films for home economics classes.
2, To show how the 8mm loop film as a visual technique
is suited to home economics, especially
to individualize instruction.
3. To compile...
The mapped area is part of the middle Deschutes Basin of central Oregon, which lies in the northwestern corner of the High Lava Plains physiographic province, between the Cascade and Ochoco Mountains. It is underlain by Cenozoic lavas, tuffs and sediments of continental origin. The oldest rocks in the sequence...
Radiation induced heat generation rates of several nonfissionable materials were measured calorimetrically in a nuclear reactor environment. The calorimeter was uniquely designed to allow many materials of grossly different heat generation rates to be measured. heat transfer characteristics of the calorimeter were determined analytically and experimentally. Materials were chosen to...
Six, recent clear cut areas were selected in the Douglas-fir
zone of the Western Cascade Range of Oregon to determine the
environmental and nutritional effects that snowbrush has on the establishment
and growth of Douglas-fir seedlings.
One thousand eighty milacre sample plots on the six clear cuts
were used to...
In this thesis, we are concerned with the synthesis of a
specified voltage ratio transfer function having a specified complex
termination. A method for the active network synthesis with specified
complex termination using resistive and capacitive elements and only
one negative impedance converter is presented. The synthesis
technique involves rearranging...
Myxobacteria are known to occur in the aquatic environment,
however, little information is available regarding the taxonomy of
these organisms. This investigation was initiated in an attempt to
classify a group of fresh water cytophagas on the basis of biochemical
and physiological as well as cultural and morphological characteristics.
The...
This paper defines four function space topologies,
characterizes two of them in terms of more familiar
concepts, and compares the four topologies. Then in the
cases of the two less familiar topologies we have considered
several common properties of topological spaces
and attempted to answer the following question: If the...
Trypticase-Soy Broth (TSB) was inoculated with Streptococcus
diacetilactis, incubated at 21C for 24 hours and centrifuged to remove
the cells. When the spent TSB was inoculated with Staphylococcus
aureus, it allowed 99.8% less growth than fresh TSB. If the spent
TSB were supplemented with 0.08 μg/ml of niacinamide, this inhibition...
The object of this investigation was to determine a number of
physical constants for the crystals of two commonly used insecticide
compounds. The compounds chosen were Aldrin and Dieldrin,
which are chlorinated cyclodiene compounds. These compounds are
in considerable use today, and show promise of heavy continued use.
The data...
Previous research has shown that activated carbon is effective
in inactivating certain herbicides applied as a preemergence treatment.
Studies were conducted in the greenhouse to determine the
influence of various factors on the ability of activated carbon to
inactivate herbicides applied after carbon application. Field studies
were conducted to determine...
Metabolic rate-temperature responses of three related
species of sea urchins were determined using oxygen consumption
rate measurements. The three species used were Strongylocentrotus
purpuratus, Strongylocentrotus franciscanus, and Allocentrotus
fragilis. All measurements were made using an oxygen
macro-electrode, physiological gas analyzer, and sealed respiratory
container. Two series of experiments--field-acclimatized and
temperature-acclimated--were...
A study of the relative rates of benzylic hydrogen abstractions
from a series of meta and para substituted neopentylbenzenes by the
bromine radical and trichloromethyl radical at 70°C has been carried
out. Application of the Hammett equation yields p values of -0.75
for the bromine atom and -0.94 for the...
Thirty-six gilts were used in an experiment of 2³ factorial
design. The experiment consisted of two breeds (Yorkshire-
Berkshire and Yorkshire), two feeding regimens (pre-breeding and
post-breeding) and two levels of dichlorvos (2, 2-dichlorovinyl
dimethyl phosphate, 0 and 800 mg. per gilt per day). Pre-breeding
treatment consisted of feeding dichlorvos...
This thesis introduces a technique for approximating to a desired
degree of accuracy a linear parabolic equation of two spatial
dimensions with given initial data and prescribed boundary conditions.
The technique is generalized to non-linear parabolic equations.
It is stable for all mesh ratios, and it is second order accurate...
An instrument was developed which performs analysis of the
oxygen content of air by means of a commercial polarographic oxygen
electrode. The oxygen analyzer is part of a portable instrument
which converts the current from the oxygen electrode into a pulse
whose width is proportional to the oxygen concentration. This...
Rats given morphine-codeine combinations exhibited significantly
increased hotplate reaction times compared with rats given
an analgesic dose of one agent alone. Genera, species, sex, protein
binding and metabolism were studied as possible implicating factors
for the increased reaction times. Both male and female rats exhibited
increased reaction time, and showed...
An analysis of the amounts of calcium carbonate, organic carbon,
quartz, and the rates of sediment accumulation in hemipelagic sediments
off Oregon has revealed that the accumulation rates of the total
sediment, organic carbon, and quartz were at least twice as high in
the late Pleistocene as they were during...
The objectives of this study were to isolate 2, 4-diaminobutyric
acid and to attempt cyclizing the acid and its disulfonamide derivative.
The original synthetic method by Adamson was followed but a
modified isolation procedure for the acid was employed.
Following the synthesis, the acidic solution was passed through
Dowex-3 ion-exchange...
A study was conducted to determine the chemical nature and
the biological treatability of log pond water. Various analyses including
total solids, volatile solids, suspended solids, dissolved
oxygen, pH, COD, BOD₅, BOD₂₀, total Kjeldahl nitrogen, nitrate
nitrogen, phosphate, and PBI were performed on water samples
from each of the four...
Permeability, effects of age, and water table fluctuations were
studied for nine drainfields in five soil types ranging from well to
poorly drained. Three sites were in Willamette, one in Woodburn,
two in Amity, two in Concord, and one in Dayton soils. Before
permeability of drainfields could be evaluated, methods...