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...
During the six-month period of July through December, 1966,
a study of animals inhabiting laminarian holdfasts in Yaquina Bay,
Oregon, was carried out to determine what animals live in this habitat
and to gain some idea of the factors which influence their presence
and distribution. This study deals with yet...
The purposes of this investigation were to measure the relative
levels of enzymatic and respiratory metabolism of some vertically
migrating mesopelagic fishes collected from the ocean waters off
Oregon and to modify and adapt an enzyme method for use as a measure
of metabolic activity at sea with a minimum...
Investigation was made into the influence of changing light
intensity on the organic and elemental composition of two species of
marine diatoms, Ditylum brightwellii and Skeletonema costatum.
Analysis was made of the relative changes in soluble and insoluble
carbohydrate; polar, non-polar, and total lipid; amino acids; proteins;
and total carbon,...
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...
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...
A primary objective of the management practices of the Oregon
State Game Commission is to maximize and sustain the annual harvest
of salmon and steelhead by sportsmen fishing in Oregon. Assessment
of these practices is dependent upon an accurate determination of total
annual sports harvest throughout the state.
Present total...
Partial reactions of photosynthesis were examined in the wild
type strain and six photosynthetic mutants (8, 11, 26, 40, 50, a') of
Scenedesmus obliquus, strain D₃. A reproducible procedure for the
isolation of active chloroplast fragments from Scenedesmus was
developed. Several chloroplast reactions were examined, as well
as two in...
Four species of euryhaline teleosts (chinook salmon, Oncorhynchus
tshawytscha, Walbaum; staghorn sculpin, Leptocottus armatus,
Girard; starry flounder, Platichthys stellatus, Pallas; shiner perch
Cymatogaster aggregata, Gibbons) were exposed to x-rays. The irradiated
animals were maintained in either of two different environments.
The effects of x-radiation were determined by observing the
percent...
Published December 1967. 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 December 1962. 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 June 1967. 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
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...
Published April 1961. 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
This report is one of a series issued in cooperation with the Air Force-Navy-Civil Subcommittee on Aircraft Design Criteria under the supervision of the Aircraft Committee of the Munitions Board. Information reviewed and reaffirmed March 1956 and 1962. Original report issued December 1950.
This report is one of a series issued in cooperation with the ANC-23 Panel on Sandwich Construction of the Departments of the Air Force, Navy, and Commerce. Information reviewed and reaffirmed 1960. Original report dated August 1955.
The primary purpose of this investigation was to characterize
the lipids of the spores and vegetative cells of Cl. botulinum. A
second purpose was to explore the possibility that lipids might serve
as a means of differentiating the chiefly proteolytic Cl. botulinum
type B from the nonproteolytic Cl. botulinum types...
Published July 1963. 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 1964. 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
This report is one of a series issued in cooperation with the Air Force-Navy-Civil Subcommittee on Aircraft Design Criteria under the supervision of the Aircraft Committee of the Munitions Board. Information reviewed and reaffirmed March 1955 and 1960. Results here reported were obtained during 1950.
This report is one of a series issued in cooperation with the ANC-23 Panel on Composite Construction for Flight Vehicles of the Departments of the Air Force, Navy, and Commerce.
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...
Before we apply the laws of probability to hiring practices, a
foundation of basic probability theory will be presented. In this
presentation a number of theorems related to probability will be
proven. These theorems are not necessarily applicable to the problem
which follows; however, they are basic to probability theory...
The incorporation of europium and dysprosium in potassium
chloride crystals was investigated. The crystals were prepared by
the Kyropoulos method from melts containing the rare-earth chlorides.
The concentration of these rare-earth ions in the crystals was determined
by neutron-activation analysis. The distribution coefficient of
europium and dysprosium between the molten...
This study was designed to test the relative effectiveness of
teaching Writing 111 at Oregon State University by closed-circuit
television as compared with conventional classroom procedures; the
hypothesis was that the students taught by television (the experimental
group) would achieve as well as the students taught in conventional
classrooms (the...
A dual -pH simultaneous direct spectrophotometric method for
the determination of calcium and magnesium using Arsenazo III has
been developed.
An absorption spectra study was made of Arsenazo III and its
magnesium, calcium, strontium, and barium complexes at various
pH values. This study showed that total calcium and magnesium
can...
The purpose of this study was to investigate whether or not
change has occurred in the scholastic background and academic ability
of students attending the junior high school summer sessions of
the Santa Monica Unified School District, California, between the
years 1956 and 1962.
Applying a Fisher and Yates Table...
A simultaneous direct spectrophotometric method for the determination
of barium and strontium using Sulfonazo III has been developed
making use of the chelons EGTA and CDTA at controlled pH
values.
An absorbance study of the barium and strontium complexes of
Sulfonazo III revealed that there is no pH sensitivity of...
The purpose of this study was to suggest ways that the Agriculture
programs offered by the two school districts in Josephine
County, Oregon can be coordinated.
A survey questionnaire was given to all students enrolled in
vocational agriculture courses at the senior high school and a personal
interview survey was...
Although 4- and 5-diacetamidopyrimidines have been reported
in the literature within the past eleven years, it was not until 1965
that a 2-diacetamidopyrimidine was reported. The current investigation
was undertaken to determine whether other 2-diacetamidopyrimi-dines could be synthesized and what the effect of various nuclear substituents would be on the...
In this study of toxigenic and non-toxigenic strains of Clostridium
botulinum type E, attempts were made to induce toxin production
in non-toxigenic cultures by exposure to mutagenic agents
and to differentiate the organisms by immunodiffusion. First, cultures
of non-toxic Cl. botulinum type E were exposed to various
mutagenic agents in...
Published May 1962. 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 December 1967. 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 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
Published April 1962. 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
Thermal analysis was used to investigate the following seven
systems: H₂S-B₂F₄, SOF₂-B₂F₄, COC1₂-B₂F₄, SF₄-B₂F₄, Xe-BF₃, NF₃-BF₃, and NF₃-BC1₃. In two of the seven systems
compound formation was observed.
In the system, H₂S-B₂F₄ the compounds H₂S[superscript .]B₂F₄ and
2H₂S[superscript .]B₂F₄ are formed. The compound H₂S[superscript .]B₂F₄ has a melting
point of...
The terminal reactions in the biosynthetic pathway of methionine
in Saccharomyces cerevisiae were investigated in this study. Analyses
of a number of methionine auxotrophs for biochemical deficiences
established four mutant groups. It was observed from qualitative feeding
experiments that some auxotrophs were able to utilize S-adenosylmethionine
(AM) and S-adenosyl-homocysteine (AH)...
This thesis
is concerned
with the
problems
which
need
consideration
when
designing
a
nanosecond
pulse
generator
having
a
repeatable
pulse
width
and
amplitude
output.
The
basic
circuit
is
first
presented
and
analyzed
and
the
reasons
for
wide
variations
in
pulse
width
with
replacement
of
transistors
are
pointed
out.
To
make...
"This progress report describes research conducted on pulp mill waste degradation in marine waters ... Engineering investigations ... have centered upon (a) treatment of mill wastes by dilution; (b) foam separation of strong wastes and (c) treatment of evaporator condensates by carbon adsorption. Biological studies have been concerned with development...
The increasing knowledge of the significance of vitamin B₆ in
human metabolic processes has emphasized the importance of developing
reliable means of assessing nutritional status with respect to
this vitamin. One possible approach to this end is the measurement
of pyridoxal phosphate in blood or plasma, particularly since this
phosphorylated...
This research was conducted to compare the performance of
community college students to four -year institutional students both
of which were enrolled in one of three different programs of general
college chemistry for nonscience majors during the 1967 -68 academic
year. The three programs were defined as follows:
Program A...
Raw and biologically stabilized Kraft mill effluents were introduced
into laboratory artificial streams at a ratio of 15 ml per liter
of water over a two year period. Effluent from the stabilization pond
of a second mill was introduced at concentrations of from 5 to 40 ml
per liter of...
Purposes of the Study: 1. To design an instrument for classification of
teacher-child verbal interaction formulating classroom
cognitive patterns of communication.
2. To use the designed instrument in a classroom
outside the pilot program to formulate an apparent
teacher-child cognitive pattern of communication. Securing and Treating the Data:
Information basic...
Considerable evidence exists to suggest the notion that selected
personality traits may be related to specific aspects of academic
achievement. This study was directed toward the investigation of this
relationship in the case of non-science majors enrolled in a college
course in physical science.
Personality was assessed with the California...
Purpose of the Study
There were two major purposes of this study. The first was to
determine which socio-economic and educational factors normally
available to Neighborhood Youth Corps personnel were associated with
success and failure in the out-of-school program. The second purpose
was to utilize these available socio-economic and educational...
The central purpose of this comparison was to determine the
congruence or difference between two teaching techniques, the television
method and the conventional lecture method as used in teaching
General Hygiene on the freshman college level at Oregon State University.
Sub-problems associated with this study were, (a) the development
of...
B and C horizon samples from twenty four selected profiles along
a north-south transect in the Willamette Valley were examined for
possible correlation between shrinkage properties and kind of clay
minerals present.
Observations of linear shrinkage, weight loss from a condition
of maximum plasticity, and changing character of X-ray diffraction...
4-Pyridoxic acid is the major metabolite of all forms of
vitamin B₆ in mammalian species. The determination of 4-pyridoxic
acid, therefore, is important in the investigation of vitamin B₆
metabolism and for the establishment of human requirements for the
vitamin.
Although 4-pyridoxic acid is itself fluorescent, Huff and
Perlzweig (1944)...
This study was undertaken to provide information needed in the design of ocean outfalls. A review of past investigations concerning forces on submerged objects is presented. Objects independent of any boundary and cylinders in boundary contact are considered. A solution for pressure distribution about a circular cylinder resting on a...
The present study is an attempt to investigate some of the relationships
between certain personality characteristics and expressed
preferences for various communication structures; it is also an
examination of the relative efficiency of the networks used.
Subjects drawn from the university population participated in
experimentally formed five-person groups. These groups...
Aphanizomenon flos-aquae from Upper Klamath Lake, Oregon
was introduced into culture in a precipitate -free medium developed
by modification of McLachlan's ASM medium. This medium ASMT
No. 8 contained no organic substances other than ethylendiaminetetraacetate
(EDTA) and Trishydroxymethylamino methane (Tris),
and was developed by modifying the concentrations of certain elements,...
The object of the present study was to investigate the stimulatory
or inhibitory effects of barium, boron, bromine, cadmium,
chromium, cobalt, copper, fluorine, iodine, iron, manganese,
molybdenum, nickel, rubidium, selenium, strontium, vanadium, and
zinc upon in vitro rumen microbial activity as measured by the amount
of cellulose digested. Washed suspensions...
This investigation was designed to determine the extent to
which students who are completing planned curricula in science education
are proficient in aspects of critical thinking, and possess
understandings of science consistent with those of the practicing
scientist. The effects of science curricula upon the development of
these abilities and...
Two methods for the estimation of non-esterified fatty acids in
plasma were evaluated. An attempt was made to obtain a reliable
micro-technique to estimate these acids in blood fractions.
The titrimetric method of Trout et al. was satisfactory in the
analyses of pure fatty acids and fatty acids added to...
A quality problem that frequently occurs with frozen green beans
is the sloughing of the skin (epidermal tissues) of the cooked, ready-to-
serve bean pods. It was found that by giving the beans a pre-blanch
(relatively mild heat treatment) prior to the blanch treatment normally
used for frozen green beans,...
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...
Purpose of the Study:
The purposes of this investigation were threefold:
1. To determine the areas of commonality existing in known
juvenile delinquents in Umatilla and Union Counties of Oregon.
2. To devise a test that would aid in identifying delinquency
tendencies in preadolescent children on the basis of areas...
The individual stocks of sockeye salmon that make up the
annual spawning migration to the Bristol Bay region of Western
Alaska are produced in the lakes and streams of ten major river
systems, which discharge into the bay over a shoreline distance of
120 miles. The hypothesis adopted in this...
Concern over the apparent lack of education for personal
and family living for high school students prompted
this study to discover the beliefs of British Columbia Home
Economics teachers regarding classes for Grade 12 students.
A questionnaire was constructed to obtain the opinions
and beliefs of Home Economics teachers concerning...
Published November 1963. 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
Several aspects of the potent inhibition of bovine plasma amine
oxidase (PAO) by hydrazines were investigated by kinetic and preparative
means. The inhibition was classified as pseudo-irreversible
by the method of Ackerman and Potter (Proc. Soc. Exptl. Biol. Med.
72, 1 (1949), and was found to exhibit Zone B kinetic...