This paper presents an exposition of the stochastic models
for the Brownian motion. The results of Einstein and Wiener are
presented, together with the Uhlenbeck-Ornstein process which
gives a more realistic model of the Brownian motion of a particle.
Finally, applying a one-one transformation on the forward
Kolmogorov equation we...
The enclosed thesis presents an algorithm, programmed
in FORTRAN IV, which generates the radii for
the objective of an astronomical refracting telescope.
The results are analyzed by the Trigonometric Ray
Trace, and found to have tolerable amounts of spherical
aberration, chromatic aberration and coma.
Research was initiated to find a secondary bleach to remove brown discoloration on sulfur dioxide brined sweet cherries. In addition, studies were carried out to determine the effects on texture of not only the secondary bleaches, but also the primary bleach (sulfur dioxide). Three bleaches were found to remove the...
There are numerous references in the literature concerning
the use of various Arctostaphylos species as medicinal plants.
One of the species, A. uva-ursi, was listed in the United States
official compendia from 1820 until 1946 as a urinary antiseptic.
Many species indigenous to the Pacific Northwest were employed
by the...
A study of the effect of mixing on the oxygen uptake rate of
estuarine bottom deposits is presented. The method of study involved
the mixing of samples of bottom deposits with the overlying water to
result in concentrations of suspended matter in the same order as
observed in the estuary....
Factors considered were phloem moisture, sour-phloem (which
may be furthered by the presence of ample phloem moisture), oleoresin of the host, and the presence of unmated female beetles in
suitable host material.
Levels of phloem moisture present in variously prepared logs
in the field ranged from about 100 to upwards...
Denitrification is classically defined as the microbial reduction
of nitrate and nitrite with the liberation of molecular nitrogen
and, in some instances, nitrous oxide. The sequence of reactions
in which nitrogen is evolved as an end-product is essentially a
respiratory mechanism in which nitrate and/or nitrite replaces
molecular oxygen. The...
A model for analytical study of the attitude stability of an
orbiting satellite consists of a rigid body whose mass center is constrained to move at constant speed in a circular path about the
center of an inverse-square force field. The body is assumed to
have one axis of inertial...
These studies are concerned with the forced motion of a two-degree-of-freedom system consisting of a "flexible beam" supported
by pendulum type hangers.
Using an asymptotic method, an approximate solution to the
nonlinear equations of motion was found. The solution takes the form
of a series in powers of the amplitude...
The purposes of this investigation were twofold:
1. To determine important criteria for making a selection of
course content in general biology.
2. To ascertain what should be the content emphasis in
biology for the purposes of general education at the freshman
college level.
The literature pertinent to the problem...
Previous investigations of the biosynthesis of sterols by the
arterial wall have shown that the intact aorta is capable of low level
incorporation of labeled precursor into a sterol digitonide. The biosynthesis
of sterols and related lipids by a cell-free preparation of
bovine aorta was investigated in the present study....
The application of residue notation is another
approach for solving the problem of carry propagation in
arithmetic units. Most other methods for solving this
problem are based on changes in adder design and the use
of improved components.
Residue arithmetic has the inherent property of
requiring no carries between moduli....
An improved procedure for the preparation of β-(3-cyclohexenyl) propionic acid from 4-vinylcyclohexene was developed. The
Friedel-Crafts cyclization of β-(3-(3-cyclohexenyl) propionyl chloride
with aluminum chloride was shown to give one bicyclic chlorine
containing ketone in 41% yield. This ketone was identified by a combination of spectral and chemical methods as a...
The coagulation of effluent from the kraft pulping and
papermaking process was investigated. The amount of material
coagulated from saline mixtures of the effluent is determined
as a function of time, salinity, kraft effluent
concentration, and mixture pH. Individual sources of salinity
include sea water and several different solutions of...
The data gathered for the study of the health status of freshmen
at Oregon State University were derived by an analysis of health history
records. These were obtained from the Oregon State University
Health Service. The years sampled were 1930, 1940, 1950 and 1960;
300 freshman male and 300 freshman...
In two twelfth grade Homemaking classes a home furnishings
unit was taught to develop creativity in the students in the classes in
order to:
1. Attempt to give students creative experiences in the home
furnishings unit which would in turn motivate them to be creative.
2. Develop learning experiences in...
A microscopic study was conducted on specific gravity wafers taken from standard tensile strength specimens of young growth Douglas-fir. Samples were studied to determine the effect of variables such as percent summerwood, fiber length and fibril angle on tensile strength of Douglas-fir. The sample specimens were picked so effects of...
Effects of four handling methods with varying holding times and
temperatures on the acceptability and safety of two commercially
prepared frozen entrees, tuna and noodles and chicken al a king,
as used in a residence hall were studied. The four methods were:
I. oven heated and served at once; II....
The acanthocephalan Echinorhynchus lageniformis Ekbaum,
1938, is a common intestinal parasite of the starry flounder, Platichthys
stellatus (Pallas), of Yaquina Bay, Lincoln Co., Oregon. Three
hundred and sixty-one flounders were examined and 146 (40.5 percent)
were found to harbor infections of E. lageniformis.
Cystacanths of E. lageniformis were found encysted...
The role of nitrate oxygen as a terminal acceptor of hydrogen
stands as a unique form of bacterial respiration. As nitrate is reduced
to nitrite on to the gaseous state (N₂, N₂O) the substrate is
oxidized to give the requisite energy for cell growth. The present
study will deal with...
Some forms of bacterial respiration do not involve molecular
oxygen but instead utilize other hydrogen acceptors for oxidation
of the substrate. Various organic and inorganic acceptors may be
used. In the present study, the inorganic radicals, nitrate and
nitrite, were investigated. Preliminary evidence indicated that
nitrate and oxygen are able...
The purpose of this study was to develop some comfortable,
expandable maternity garments which were suitable for both home
and street wear. These designs were intended to follow the art
principles of good design, namely: balance, rhythm, proportion,
scale, and emphasis.
The first phase in the exploration of maternity designs...
The fish of Suttle Lake, Oregon, have been found to harbor
an acanthocephalan parasite, which lives attached to the mucosa of
the intestine. Between July 1961 and January 1963, several hundred of
these fish were exarnined and nearly every one was infected
with this parasite, which was identified as Neochinorhynchus...
The relative rates of bridgehead hydrogen abstraction from a
series of 1-substituted adamantanes by the trichloromethyl radical
at 40.0°C. has been carried out. Utilizing the Hammett-Taft equation
a p* value of -0.40 was obtained for this reaction. Application
of the Kirkwood-Westheimer model for the transmission of substituent
effects gave an...
When nitrate is used in a biological electron transport
system as the final acceptor of hydrogen to form water,
the system is characterized as "Nitrate Respiration." However,
the quantitative expression of the over-all participation
of NO₃⁻(0) in the oxidation of glucose by denitrifiers
such as Pseudomonas stutzeri deserves clarification.
In...
Gamma irradiation survival curves of Salmonella enteriditis,
Salmonella paratyphi A, Salmonella cholerasuis, Salmonella
pullorum and Streptococcus pyogenes were determined in crabmeat
and in Hartsell's broth. The survival pattern of Staphylococcus
aureus in crabmeat was also determined.
A "tailing off" was found in the survival patterns of
Salmonella paratyphi A, Salmonella...
A facile route to bicyclo(2.1.1)hexanes was developed involving
the intramolecular photocyclization of 1, 5-hexadien-3-one to
bicyclo(2.1.1)hexan-2-one. A study of the chemistry of bicyclo-(2.1.1)hexan-2-one was undertaken. Deuterium exchange and borohydride
reduction demonstrated the strain present in the ketone.
Further evidence was obtained from the failure to introduce substituents
alpha to the...
In the field of herpetology, most studies of homing have been
carried out with anurans and, to a lesser degree, reptiles. Studies
of orientation and navigation in urodeles have been limited to a few
brief notes and the extensive investigation of Taricha rivularis by
Twitty (1959 and 1964).
The rough-skinned...
A technique was investigated in which a silicon crystal was
used as a very sensitive detector of sub-nanogram quantities of
boron. The unknown quantity of boron was spread uniformly on
the surface of an n-type silicon wafer which was then baked for
diffusion. The measured depth of the p-n junction...
A study to determine the oxygen transfer rates in selected
waste liquids and to compare these rates with that of distilled water
was performed. Tests using treated sewage and pulp and paper mill
effluent were conducted in a model aeration tank. From the data, a,
a ratio of the rate...
A strain of Aphanizomenon flos-aquae Born. et Flah. has been
introduced into culture and maintained since August of 1964 in completely
defined media. It exhibits the planktonic, colonial flake form
found in nature, and both heterocysts and akinetes are present. The
color and size of the flake and general appearance...
In freshwater the crayfish, Pacifasticus leniusculus, maintains
sodium balance by absorbing sodium against a large concentration
gradient. The site of uptake is the gills. The rate of uptake is
regulated and can be increased by depleting the animals of sodium
Neither the mechanism of sodium transport or the regulatory mechanism...
Processing and storage of berry fruits is accompanied by various changes, the important ones being the changes in the soluble solids content, titratable acidity, pH, pigments, and texture. A study was made of these changes in processed strawberries, raspberries, blackberries and blueberries, still cooked and stored at 78°F for one...
PART I. A chemical examination of the materials toxic to fish in
kraft pulp mill wastes has been made as part of a water pollution
study. Thirty gallons of "foul condensate" from a typical kraft mill
gave 14 g of organic material when extracted with methylene chloride,
and an additional...
It has been undertaken here to use the matrix method of
structural analysis for the determination of the stability of elastically
restrained, simple portal frames. This involves the formulation of
the stiffness matrix of the structure in terms of the axial force in the
members. The stability criterion, when applied...
Experiments are reported which demonstrate that a cobalt deficiency
in R. meliloti results in a decreased cytochrome content of
bacterial cells. It is concluded that the effect of cobalt deficiency
on cytochrome content of Rhizobium cells and on the leghemoglobin
content of nodules possibly may be explained by an effect...
The texture of processed berry fruits changes both during processing
and subsequent storage. A study was made of these changes
in processed strawberries, raspberries, blackberries, and blue-
berries, spin-cooked and stored at 100°F. for 28 days in tin and
glass containers. Four samples, from each of the two replications of...
The nutrient elements needed for the optimum
growth and yield of pear trees is vitally important to the
pear growers. The knowledge of the amounts and kinds of
fertilizer to apply to obtain this growth could increase
the production and cut the costs for these growers.
Field experiments have been...
Oils, greases, and grit which collect on an aircraft during
flight are removed on the U. S. Air Force washracks using an
alkaline, water-base cleaner. Waste-flows from these washracks
may include in addition to free oils, emulsified oils, and alkaline,
water-base cleaners several other constituents such as acid skin
brightners,...
Rice has been an important integral part of the economy of
Thailand or centuries. Not only is rice the staple diet of the people
but it also provides the major part of export earnings as well. Since
economic development is stressed in Thailand, a demand study of
rice is appropriate,...
Large amounts of plant tissue are used in the production of many
canned, frozen and dried foods. Some of this material is unsatisfactory
in appearance and texture, despite careful processing from high quality
raw materials.
In the present study, the changes induced in soft fruits by controlled
heating and freezing...
An investigation was undertaken to determine whether
potassium is indeed necessary for the in vivo synthesis of a
specific protein. The effects of univalent cations on the
inductive formation of nitrate reductase and on the level of
activity of representative non-adaptive enzyme are presented.
Cultures of Neurospora crassa were grown...
This study attempted to analyze the educational problems of
Tamil women, one of the communal groups in Ceylon, to trace in
broad outline the development of their education from the earliest
times to the present day, and to ascertain particularly the quality
and importance of Home Economics Education in the...
The purpose of this study was to statistically evaluate one kind
of new elementary science curriculum materials. The materials;
(1) are written at five reading levels to partially meet the reading
ability spread found in the intermediate grades, (2) provide ways to
stimulate class discussion, and (3) provide three levels...
Swamp rice offers tropical populations the most feasible means
of obtaining a dependable and plentiful supply of protein-rich cereals.
An acre of swamp rice land will support many persons and the crop
does not cause erosion. A further production of this type of rice appears
warranted in Sierra Leone and...
A large portion of farm accidents involves tractors. The study assumes that safety education is one method of decreasing the accident rate. The problem facing educators involves fragmentation of safety information and insufficient understanding of motivation as influenced by factors such as emotions and attitudes. The majority of literature most...
This issue of the PMFC bulletin focuses primarily on the English sole, including results of tagging off of various coasts and studies of various populations of English sole. It also gives a review of sablefish tagging in California and details the Oregon trawl fishery for mink food up to 1965.
This analysis concerns the life and scientific work of Henry
Augustus Rowland (1848-1901), organizer and the first chairman of
the physics department at The Johns Hopkins University in 1876.
Special materials used in this research included three pieces of
Rowland's experimental apparatus which are extant in the Smithsonian
Institution Division...
The fatty acids of coho salmon were identified and then a study
was conducted to determine the effects of exercise on the fatty acids
of salmon forced to swim against water velocities of 52, 54, 56, and
59 cm/sec, The shorter and lighter salmon were less competent at
a given...
The purpose of the study was to determine the current status
of provisions being made to provide for appropriate utilization of
the increasing quantities of audiovisual equipment and materials
available in the public schools of Oregon. The ultimate objective of
the study was to identify activities and programs essential to...
Purpose of the Study The purpose of this study is to determine the direction of the
emerging role of the teacher aide in Oregon Public Schools and to
make recommendations on the basis of the findings of this study.
Securing and Treating Data
The data for this study were obtained...
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 ecological and silvicultural importance of snowbrush,
Ceanothus velutinus, in the areas west of the summit of the Oregon
Cascades was studied. Particular attention has been given its nitrogen-
fixing ability under both field and greenhouse conditions.
On west slopes of the Oregon Cascades snowbrush occurs above
2, 500 feet...
In the present study, five breeds of ewes and their lambs were
utilized. The breeds used were: Border Cheviot, Dorset Horn, Columbia,
Suffolk and Willamette. In all, 31 ewes and 42 lambs were involved.
The blood constituents which were determined for the ewes and
lambs were: acid and alkaline phosphatase,...
Published January 1966. 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
Report on an investigation carried out under Contract Nonr-2771 (04), Project NR 388-062, between the University of Oregon and the Office of Naval Research, U.S. Department of the Navy.