The 865 ewe production records taken from three lamb crops, were
analyzed to study breed effects, heterosis, environmental effects and
interactions between them, and breed and heterosis x environment interaction
effects on ewe production traits. In each of two environments,
approximately 144 ewes were mated in a three breed reciprocal...
The process of biological nitrogen fixation involves the enzymic
reduction of atmospheric nitrogen (N₂) to ammonia (NH₃). The
enzyme which catalyzes this reduction, nitrogenase, does not exhibit
a high degree of substrate specificity. It also catalyzes the reduction
of acetylene (C₂2H₂) to ethylene (C₂H₄). The reduction of
C₂H₂ to C₂H₄...
Techniques to measure vegetative maturity and dormancy
of deciduous nursery stock were investigated in red-osier
dogwood. Previous methods which were based on: survival
or tip dieback, change in level of ethylene production,
xylem water potential, and alteration of square wave traces
traces, provided no better indication of dormancy than did...
Physical sources of nutrient nitrogen for the Auke Bay, Alaska
estuarine ecosystem were investigated. These sources included
vertical dispersion, advection, and fresh water sources. Hydrographic
circulation patterns for the bay, and a nutrient budget for
the surface mixed layer were developed.
Measurements of temperature, salinity, currents, wind
velocity, rainfall and...
Barth's theory of transactional analysis is applied to the
community of Tiller, Oregon and its reaction to a development proposal.
Community behavior patterns vis-a-vis the development proposal are
examined from a processual point of view to determine how these
patterns are generated.
The community's history and contemporary situation are described....
Two separate studies on the distribution of gammarid amphipods in the bathyal and abyssal benthic environments demonstrated that different assemblages could be found at a single depth over distances on the order of 100 kilometers. These studies evaluated changes in the species composition and relative abundance of the amphipod assemblage...
The purpose of this study was to identify some of the factors associated with student usage of the Student Health Services (SHS)
and of the Infirmary at Oregon State University. The population for the study was the freshman class entering Oregon State University in September, 1968. The original enrollment of...
Oregon College of Education (OCE) is a small, liberal arts college with a special emphasis on the preparation of teachers. Its student population is predominantly from Oregon's Willamette Valley area. OCE developed specific objectives for its teacher education program and the purpose of this study was to determine whether the...