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ScholarsArchive at Oregon State University
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A biosystematic investigation was undertaken in 15
species and three subspecies of the genus Aster, in western
North America. Previous studies had been based entirely on
external morphological features, and it was believed that
much could be...
1966-05-10 (iso8601)
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This study was conducted to determine the effects of insect
infestation on areas of heating in stored grain, and to demonstrate
the ability of four species of insects to initiate or promote the
spread of these heating areas. The four insects used...
1965-06-09 (iso8601)
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Melanoma is the deadliest form of skin cancer, arising from malignant transformation of pigment-producing melanocytes. The primary risk factor for melanoma and other skin cancers is DNA damage resulting from unprotected solar ultraviolet radiation...
2014-04-17 (iso8601)
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The purpose of this work was to design a system for measuring
the velocity of a powder actuated fastener or drivepin during penetration.
This system would provide a tool for further investigation
into drivepin penetration characteristics. The main...
1966-05-11 (iso8601)
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The thesis area covers 165 square miles including the greater
part of the northeastern quarter of the Mitchell quadrangle in north-central Oregon. The three stratigraphic units exposed in the area
consist of a variety of Tertiary volcanic rocks...
1965-06-04 (iso8601)
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This study focused on the relationship between parental attitudes
and the conscience orientation of children, testing the hypotheses that
(1) parents who had children with an external conscience orientation
would show significantly greater...
1966-05-11 (iso8601)
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This study was designed to answer
1. What are the practices of secondary supervising teachers
in conferring with their Oregon State University student
teachers?
2. What are the beliefs of secondary supervising teachers
concerning conferences with...
1965-10-29 (iso8601)
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Changes in the diode characteristics of three different
types of diodes were studied. These were point-contact, bonded and zinc-diffused diodes. The parameters
in which measurable changes were observed were the forward
resistance, the reverse...
1965-08-11 (iso8601)
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Pseudomonas syringae is a phylogenetically diverse species of Gram-negative bacterial plant pathogens responsible for crop
diseases around the world. The HrpL sigma factor drives expression of the major P. syringae virulence regulon. HrpL...
2014-01-02 (iso8601)
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A machine capable of demonstrating and solving queueing
problems is useful to any systems engineer. This paper describes
a successful queueing simulator constructed from readily available
materials. The machine is easy to operate, portable, and...
1966-02-10 (iso8601)
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Engaging large numbers of undergraduates in authentic scientific discovery is desirable but difficult to achieve. We
have developed a general model in which faculty and teaching assistants from diverse academic institutions are trained to teach a...
2014-02-04 (iso8601)
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Recent work has suggested that plants differ in their relative
reliance on structural avoidance of embolism versus maintenance
of the xylem water column through dynamic traits such
as capacitance, but we still know little about how and why
species...
2014-05 (iso8601)
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A recombinant inbred line (RIL) mapping population developed from a cross between winter wheat (Triticum aestivum L.)
cultivars Coda and Brundage was evaluated for reaction to stripe rust (caused by Puccinia striiformis f. sp. tritici). Two...
2014-03-18 (iso8601)
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Advancing our ability to use invasive plants for producing commodities is central to the agricultural industry. Our objective was
to evaluate Russian knapweed (Acroptilon repens [L.] DC.) as a winter feed supplement for ruminant livestock. In...
2014-03 (iso8601)
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BACKGROUND: Simple and effective cryopreservation of human oocytes would have
an enormous impact on the financial and ethical constraints of human assisted
reproduction. Recently, studies have demonstrated the potential for cryopreservation
in an...
2014-03-20 (iso8601)
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The 4s³P₁ state of argon decays radiatively by a resonance
transition to the 3p⁶¹S₀ ground state; the wavelength of this radiation
is 1067A. By direct observation of the decay of the 1067A radiation
from excited argon gas, a value of 0.93±0.06 x...
1965-05-12 (iso8601)
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The design of this study was suggested by the following observations:
(1) the successful application of recurrent selection
techniques in obtaining improvement of hybrid performance in corn
and Drosophila, (2) the increased production realized by...
1965-01-22 (iso8601)
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A procedure was developed for the isolation and maintenance
of isolated abdomina of the cockroach, Leucophaea maderae. The
degree of injury and loss of body fluid was best minimized by ligating
the animals immediately following the final molt. The...
1965-02-23 (iso8601)
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English holly culture in Oregon has been threatened by the
development of red leaf spots which prevent sale of cut holly.
Chemical, mechanical and insect injury and boron deficiency have
been shown in the past to cause different types of red leaf...
1965-05-06 (iso8601)
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This study was carried out to compare the effects of a quaternary
ammonium compound (QAC) upon strains of Pseudomonas aeruginosa
which were either sensitive or resistant to the germicide. The cationic
QAC used was alkyldimethylbenzylammonium...
1965-05-03 (iso8601)
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This paper examines the permanence of agricultural land afforestation under stylized carbon markets at the regional
level in the US. Attention is focused on Southern and Midwest regions which historically have experienced
a relatively large amount...
2014-04 (iso8601)
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With the decrease in cost and increase in output of whole-genome shotgun technologies, many metagenomic studies are
utilizing this approach in lieu of the more traditional 16S rRNA amplicon technique. Due to the large number of relatively
short...
2014-03-13 (iso8601)
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Operations research is concerned with the science of decision and uses mathematical models to aid in making these decisions. In this thesis operations research is used in connection with the lumber industry. The problem of concern has to do with a...
1966-05-03 (iso8601)
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