Commerical preparations and published formulations using reagent chemicals for seawater substitutes were not biologically acceptable to Mytilus edulis embryos, in that calcification did not occur. When Leslie coarse hide salt was used as the source of NaCl for literature formulations, most formulas provided some success in the development, growth and...
The purpose of this study of the life and career of Dr. Carl
Leonard Anderson was to recount his professional contributions to
the field of health and relate these to public health and health education. The major emphasis of this study concerned Dr. Anderson's
professional life.
The accomplishment of the...
A new experimental technique for the study of
atom-surface interactions is obtained by passing an atomic
beam containing high-Rydberg states through a fine mesh
target. The technique is demonstrated to be a sensitive
probe of the electric fields of adsorbed dipole layers in
transmission experiments in which a time-dependent beam...
Groundwater overdraft in the Wilcox Groundwater Basin, as a consequence of increasing rates of agricultural groundwater withdrawal, has led to significant regional groundwater level decline and threatens to undermine the basin’s long-term water resource security. Updated characterization of the basin’s water resource conditions and agricultural water demand is critically important...
Pacific lamprey, Entosphenus tridentatus, have shown recent and rapid declines in abundance. These anadromous fish return to streams where they mature, spawn and die. It has been inferred that Pacific lamprey enter freshwater and reside for ~ 1 year before spawning. This long exposure to the freshwater environment may affect...
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Carl B. Schreck
Pacific lamprey, Entosphenus tridentatus, have shown recent and rapid
This paper is devoted to the study of families of tangent lines
to curves in Euclidean three dimensional space by the medium of a
particular representation for lines.
First, a ring of elements called dual numbers is described,
and a vector space over this ring, whose elements are called dual...
This thesis is a work of literary non-fiction. It
is divided into six sections. The first, "A Sense of
Place," and the last, "Pulling a Geographical," are
collage essays which establish and then reiterate major
themes in the work: movement, work, geography,
climate, people, and education--some curricular, some
not. The...
Five species of aquatic organisms were exposed to TCDD. Lethal effects of initial exposure to coho salmon of 23.4 nanogram TCDD/gram fish wet weight (23.4 ng/g), or equivalent to 100 nanogram
per liter (100 ng/l) TCDD in water, for 24 hours were irreversible; 95% mortality occurred in 60 days. Exposure...