A new x-ray source capable of operating at up to 80
watts has been designed and developed, and put to use with
the Oregon State University Cylindrical Electrostatic
Analyzer. The new source produces over four times the
photoelectron intensity of its predecessor, from gaseous
samples, and accommodates a wider selection...
A nonflame method for atomic absorption spectroscopy is
described. A helical tungsten filament from a commercially available
6-V, 4-A light bulb, heated to :incandescence in an argon atmosphere
is used to atomize 2-μl aqueous samples for metals analyses. Studies
of two hollow cathode lamp tungsten filament orientations, a
modulated light...
This is a student report which studies the effects of wave action on intertidal zonation at Yaquina Head. It includes hand-drawn diagrams of quadrants sampled at the location.
Effective two-body interactions were obtained from
realistic nucleon-nucleon potentials and applications made
in calculations of ground state properties of even-even N=Z light nuclei. The admixture of high momentum states into
the nuclear wavefunction caused by the strong, short-range
repulsion of the two-nucleon force was taken into account
by making a...
A study was made of the subgenus Genuini of the genus Juncus in the Pacific States, California, Oregon and Washington. Extensive morphological comparisons, geographical distributions, habitat differences and observations of apparent presence or absence of natural hybrids provided the major data sources. Cytological studies were made, but were inconclusive. Eleven...
This study was undertaken to compile a comprehensive
review of the literature and to gain a better understanding
of the host-parasite relationship in corynebacterial kidney
disease of salmonid fishes. An indirect fluorescent antibody
technique was developed which allowed differentiation
of intra- and extracellular bacteria. This technique was
used in combination...
The teliospore of Tilletia caries germinates to produce a promycelium
with a whorl of primary sporidia at its tip. The time between
emergence of the promycelium and the development of primary sporidia
averaged 2.3 h. Fusion between compatible sporidia occurred within
an additional 3.8 h. Primary sporidia appeared to be...
Bdellovibrio bacteriovorus 100 and B. stolpii UKi-2 each produce
two extracellular proteases which attack Azocoll (collagen)
while B. starrii A3.12 produces at least four such proteolytic
enzymes. Under standard growth and assay conditions each Bdellovibrio
species produces a unique amount of proteolytic activity. The
decreasing order of enzyme units was...