A study was conducted to determine the quantity and character
of substances leached from logs floating in water, and the rate of
leaching of these substances. The species of wood studied were Douglas
fir and ponderosa pine. The research was carried out in a controlled
laboratory environment with log sections...
A prototype deep ocean nuclear moisture meter was developed
based on the detection of epithermal neutrons backscattered from
marine sediment molecules. Development consisted of choosing a
source, a detector, containment materials, and associated counting
equipment, followed by the construction and calibration of the probe.
Thermal neutron response of the probe...
This study was designed to determine personal and professional
traits of effective and ineffective selected home economics teachers of
sophomore girls and to discover if characteristics of effective and
ineffective teachers varied between large schools of 1,000 or more
pupils and small schools with 500 or fewer students.
A survey...
Concentrated culture supernatants from strains of Vibrio
parahaemolyticus of gastroenteric origin, "suspected" V. parahaemolyticus
isolated from cases of skin infection, nonpathogenic marine
Vibrio, V. anguillarum and V. alginolyticus, were submitted to flat
gel electrophoresis, followed by the examination of the polyacrylamide
gels for total protein and enzyme patterns.
Variations related...
There is an increasing body of evidence that the pineal gland acts
as a neuroendocrine transducer, translating neural information about
environmental lighting condition into hormonal information. In the
rat, light controls the production of melatonin which acts via the
hypothalamic-hypophyseal pathway to control the function of the gonads,
A similar...
The pore size distribution of several battery separators were
determined experimentally by mercury penetration method using the
Aminco-Winslow porosimeter. The performances of the separators under
electrolyte penetration were also studied. The results of electrolyte
penetration revealed that the degree of penetration was affected
by the anions of the entrained salts...
This study was initiated in the Spring of 1966 for the purpose of
determining the present status and effectiveness of imported parasitic
wasps of the pea aphid in the Willamette Valley of western Oregon.
The pea aphid is a serious pest throughout the pea and alfalfa
growing regions of the...
The ultrastructure of the oviduct and the hormonal induced
alterations in the cellular organelles of prepubertal and ovariectomized
rabbits have been studied with electron-microscopic histochemical
methods.
The pseudostratified epithelium of the oviduct in prepubertal
rabbits contained both ciliated and secretory cells. The secretory
cells showed apocrine projections filled with electron-dense...
This study was initiated to determine the concentration
of magnesium and calcium in dividing eggs of the sea
urchin Stroncavocentrotus purpuratus and to explore the
relationship between these ions and mitotic events.
Samples of developing eggs, maintained at 15°C, were
taken at ten-minute intervals from fertilization through
the second cleavage,...
The polyunsaturated fatty acids (PUFA) are known to be required
for larval growth and normal wing development in several
species of Lepidoptera but most of the basic information necessary
for a complete understanding of this nutritional phenomenon has not
been gathered. This includes the role of each of the essential...