Some important factors that affect the dimensional
control of oxide films on silicon were studied. Both N- and
P-type silicon with resistivities in the range of
0.014 to 200 ohm-cm and a (111) surface orientation
were employed in this experiment. The etching rates of
silicon dioxide in hydrofluoric acid (111)...
This thesis is a case study of the Warner Valley Stock Company,
a large eastern Oregon Stock Ranch, which utilizes over
680,000 acres of government grazing land. The purpose is to examine
the background growth, and forces affecting the ranch. The
relationship of man to land can be understood by...
Field and laboratory tests were carried out to investigate the
survival of the root-nodule bacterium, Rhizobium trifolii, when
inoculated onto seeds of the pasture legume subterranean clover,
(Trifolium subterraneum L.), in order to improve the nodulation
and establishment of this plant in acid soils.
Field experiments were carried out in...
From May through November 1963, a mosquito survey was
made in the city of Corvallis, Oregon. The information
obtained dealt with the species of mosquitoes found,
their seasonal occurrence and the location and nature of
their larval habitats. A quantitative and qualitative
analysis of larval and adult mosquito collections by...
Many initially healthy Pelargonium seedlings developed symptoms
of Verticillium wilt in an Oregon State University greenhouse
when they attained blooming age. The symptoms first appeared in
May as "edge burning," yellowing, and wilting of leaves. In late
summer, these seedlings which were the offspring of Verticillium
infected plants, became severely...
Growth data compiled in this study were collected by using
pigs farrowed during the fall, 1963 and spring, 1964 farrowing seasons
of the Oregon State University swine herd. Thirty-seven trios
of light-, medium- and heavy-birth-weight suckling pigs were used to
determine the effect of birth weight on subsequent rate of...
White muscle disease or muscular dystrophy of sheep is a selenium
responsive malady common to many areas with an inherent natural
deficiency of selenium in the forage. The disease can be prevented in
lambs by adding trace amounts (approximately 0.1 ppm) of selenium to
the otherwise selenium deficient, forage fed...
The aim of the study was to explore the possibility of relationships
existing between the warmth and coolness of personal
coloring, certain personality characteristics, and the choice of
warmth or coolness in colors to be used for clothing.
A review of the literature dealing with color preferences indicated
that one...
About 16 percent of Oregon's forest land is owned by the various
components of the forest industry. Most of this area lies within the
relatively heavily populated western portion of the state. These
factors, plus the fact that the public seems to have a peculiar attitude
about property rights when...
This study deals with the patterns of development and distribution
of connective tissue fibers in the placentae and adnexa of the golden
hamster (Mesocricetus auratus Waterhouse). The placentae and
adnexa representing all days of gestation from six to term were
stained for the presence of collagen, reticulin, and elastin. Additionally,...