A method of measuring interstitial fluid mixing rates for
evaluation of exchange between pore water of estuarine benthic sediments
and the overlying water in a bay is presented. Pore water
movement is monitored by reducing conductivity of the interstitial
fluid within a zone of the benthic sediment to a depth...
Geophysical data collected in 1975 and 1976 reveal major
crustal and tectonic elements of the continental margin of southern
Baja California. Gravity, magnetic, seismic reflection and bathymetric data show seaward extension of the islands enclosing Magdalena
and Almejas Bays. A seismic reflection profile, oriented
approximately normal to the trend of...
Large-volume (20-liter) bioassays were carried out in order to
assess the effects of major nutrients and micro-nutrients on
natural phytoplankton populations in water collected from a site
close to the mouth of Yaquina Bay, Oregon. Seven long-term
experiments were conducted during the years 1975-1976. A stripping
technique employing activated carbon...
The formation of 3-hydroxy-N-nitrosopyrrolidine from decarboxylation
of 4-hydroxy-N-nitrosoproline was demonstrated in model
heating system designed to simulate the conditions of frying bacon.
The identification of the nitrosamine was achieved by comparison of
its TLC R [subscript f] value, gas chromatographic retention time, and mass
spectral fragmentation pattern with those of...
In this thesis the author extends the standard techniques of differential geometry to the case of distributional (in the sense of Schwartz) pseudoriemannian structures. A new definition of flows for distributional vector fields is developed using generalized paths which are essentially nonlinear-distributional measures, and an existence theorem is proved when...
A 15-month field study was made on the reproductive cycles of
the prosobranch gastropods Nucella lamellosa, Nucella emarginata,
Searlesia dira and Amphissa columbiana on the Oregon coast.
Amphissa columbiaria and Searlesia dira were collected from Boiler
Bay, Nucella emarginata from Seal Rock and Nucella lamellosa
from inside Yaquina Bay.
All...
