The mechanism of phosphate adsorption by clay minerals was
reported by Stout. He showed that the loss of water of kaolinite in
the presence of KC1, K₂SO₄ or KH₂PO₄ was due to an exchange reaction
between anion and hydroxyl groups from clay minerals. Also,
Kelly and Midgley reported that the...
The absorption, translocation and metabolism of a new
herbicide, n-propyl-C¹⁴ N, N-di-n-propyl-thiolcarbamate (PDPC), were
studied in both peanut and soybean plants. These studies were
carried out on plants of different ages and treated at two rates of
application. The residue content of the plants was also determined
from germination to...
Studies were undertaken to determine the extent and rate of
binding of Hg-203 labeled phenylmercuric acetate and mercuric ace
tate in rat kidney and liver slices and their subcellular fractions
after 37°C incubation of the slices in Krebs-Ringer -phosphate solutions
containing the mercurials at 10⁻⁴ molar. A fast and parallel...
Normal adult rats absorbed and metabolized C¹⁴-labeled acetate
rapidly. The greatest percentage of the administered radioactivity
was recovered in the expired CO₂, however small amounts of radioactivity
were also found in the urine and feces. There were two rates
of C¹⁴O₂ elimination in normal adult rats. The small amount of...
A single oral dose of DDT, ranging from 40 to 200 mg/kg, had
a drastic effect on the in vivo acetate metabolism in rats. The normal
elimination pattern of the expired ¹⁴CO₂ from ¹⁴C-labelled
acetate was distorted, and the rate of output of the ¹⁴CO₂ was decreased.
The ratio of...
The metabolism of ¹⁴C-labeled ethyl -N, N-di-n- propylthiolcarbamate
(EPTC- ¹⁴C) was studied in adult female rats. Single
oral doses of EPTC-¹⁴C ranging from 0. 6 to 100. 6 mg were given
and the elimination pattern of ¹⁴C was determined.
Results of 18 experiments showed that increasing the doses
Biochemical studies of phenylmercuric acetate (PMA) and
mercuric acetate toxicity in rats carried out during this investigation
were (1) the metabolism of ²⁰³Hg(Ac)₂ and ²⁰³Hg-PMA within kidney and liver tissues following oral
(2) the effect on some
soluble enzyme activities and determinations of ²⁰³Hg binding in the
An optimization methodology, algorithms, and computer program for
cable/lumped-body deployment system are developed for the design and installation of
sonar packages in deep ocean ranges. In addition, a methodology and algorithms for the
control of the system are proposed.
A penalty function is developed in terms of the system parameters...