The purpose of this study was to examine the culture
supernatants of various strains of Clostridium botulinum
for characteristic extracellular enzymes which can facilitate
their rapid identification.
A convenient, efficient, water-cooled flat gel electrophoretic
unit was utilized to concentrate and purify the
total proteins and extracellular enzymes present in the...
Six species of Ephemeroptera were studied in two sample areas
in Western Oregon: the Metolius River, Jefferson Co., and Oak
Creek, Benton Co. The Metolius River is characterized by low
fluctuations in flow and water temperatures (8-13 C); whereas, Oak
Creek is characterized by large fluctuations in volume of flow...
Previous work has shown that diuron (3-(3, 4- dichlorophenyl)-1,
1-dimethylurea) is less toxic to fall-planted wheat than to wheat
planted in the spring. Diuron has been a significant factor in increasing
yields of winter wheat grown in Oregon's Willamette Valley.
The influence of several selected environmental factors on diuron
toxicity...
The fungus Phoma menthae Strasser causes black lesions and
cankers on stems and rhizomes of Mentha piperita L. The purpose
of this thesis was to: 1) study the production of polygalacturonase
(PG) and macerating enzymes (ME) by P. menthae in vivo and in
vitro, 2) study the effects of phenolic...
The purposes of this study were: to collect information relative
to the content of the sex education information adolescents have received
from selected sources, to ascertain their appraisal of the
value of this information and to test hypotheses concerning communication
and dissemination of information on sexual topics between
adults and...
This study investigated several physiological aspects of the
water economy of the Sage Sparrow, Amphispiza belli nevadensis,as
they relate to the ability of this species to inhabit xeric desert environments.
When maintained in captivity on a dry diet without
drinking water, Sage Sparrows gradually lost weight and died. During the...
A study of mortality, food consumption, food utilization, and
polyhedral production following single and simultaneous challenges
of the variegated cutworm, Peridroma saucia (Hubner), with DDT
and a nuclear polyhedrosis virus was made. Fourth instar larvae
were challenged topically with three levels of DDT and per os with
three levels of...
The karyotypes of five species of ranid frogs were determined
from metaphase plates of bone marrow cells. The colchicine, hypotonic-
citrate, blaze-dry technique was used to obtain the plates.
Morphometric datawere obtained from the karyotypes and compared
with other species of the genus Rana.
Like most other members of the...
This analysis is the study of Oregon's wildlife resources from
the period prior to white settlement up to the present time, including
critical projections, based on present trends and expected conditions
for both human and wildlife populations in the state up to the year 2010.
Prior to white settlement Oregon...
Sisson's formally exact series solution for momentum, heat and
mass transfer in steady two-dimensional or axi-symmetrical constant-property,
laminar boundary layer flow was examined. A new series
was proposed for the boundary condition accounting for the mass
transfer at the surface of the body on which the boundary layer is
formed....
This thesis concerns the alteration of the course of selective
protein synthesis and morphogenesis in plants treated with growth
regulating chemicals. Treatment of 48-hour-old "Alaska" pea seedlings
(Pisum sativum L.) with 2, 4-D, IAA, NAA or picloram caused
inhibition of epicotyl and primary root elongation and proliferation of
massed lateral...
The heat-transfer phenomena studied in this work were
associated with pool boiling from a flat horizontal surface facing
upward with the bulk liquid at its saturation temperature. The
analysis of boiling sound and the investigation of the transition boiling
mechanism constituted the essence of the present study.
The distinctively large...
Virtually nothing is known regarding the quantitative significance
of the several catabolic sequences involved in the breakdown of
glucose in the intact rat. Studies in this and other laboratories have
shown that the Embden-Meyerhof-Parnas pathway, the pentose
phosphate pathway and the glucuronic acid pathway are operative in
several tissues of...
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 United States Air Force uses a test constructed by Air
Force personnel to test all individuals seeking entrance into Air
Force officer training programs. This test is titled "The Air Force
Officer Qualifying Test" (AFOQT). There are two major classes of
candidates who are required to take the test:...
The effect of X-irradiation on DNA synthesis in larval salivary
glands of Drosophila hydei was studied using the technique of liquid
scintillation spectrometry and autoradiography. DNA synthesis in
salivary glands of synchronized larvae was measured at successive
stages of third instar development by in vitro uptake of ³H-thymidine
for a...