The proteolytic enzymes in the visceral organs of albacore tuna
fish (Thunnus alalunga) were studied, initially as an extract of the
whole viscera, then as extracts of the individual organs. Preliminary
studies indicated three pH optima of activity in the whole viscera
extracts pH 1.7, 3.1-3.5 and 9.5. Analysis of...
Since the inception of white settlement, Oregon man-forest
relationships have progressively matured. The 1971 Forest Practices
Act is the culmination to date of increasing societal concern for the
protection of the forest environment and the conservation of its
resources. The Act has resulted in an increased employment of forest
practices...
The fate of hexachlorophene, a widely used bactericide, was
investigated using both intact male rats and rabbits and liver microsomes
from male rats. Hexachlorophene administered intraperitoneally
was found to be rapidly absorbed and distributed to all the
tissues of the animals. Excretion of the chemical in both species
occurred slowly,...
A growth chamber experiment was conducted to determine the
rate of S-urea mineralization and effect of S-urea on the yield of
ryegrass (Lolium multiflorum) grown in Steiwer soil as influenced
by soil temperature (60, 75, and 90° F) and soil moisture stress
(0. 10, 0.35, and 2.50 bars). Plant yield,...
This study was an experimental investigation of two methods of
teaching students the cognitive knowledge and psychomotor skills pertaining
to the automobile brake system. The methods investigated
were the experimental individualized learning system and the traditional
group-lecture and demonstration.
Experimental Design and Procedure
The experiment, conducted during the spring term...