Several studies were conducted to determine if a more consistent
predictor of phytotoxicity to winter oats could be obtained with a
surfactant-herbicide ratio or a per-unit-volume concentration of surfactant,
independent of volume. The herbicides tested were 2,2-dichloropropionic acid (dalapon), 1,1'-dimethyl-4, 4'-bipyridinium
(paraquat), and 3-tert-butyl-5-chloro-6-methyluracil (terbacil) with
the nonionic surfactant X-77...
Field, greenhouse, growth chamber and laboratory experiments
evaluated factors affecting establishment, survival and production
of birdsfoot trefoil (Lotus corniculatus L.) and alfalfa (Medicago
sativa L.)
Field studies investigated the effects of a barley companion
crop, seedling year harvest management and nitrogen and phosphorus
fertilization upon stands, survival and subsequent production...
Purpose of the Study
The purpose of this study was to measure, by the analysis of
statistical and subjective data, the effects of work experience programs
on disadvantaged ninth grade students.
The study involved one major hypothesis: the introduction of
work experience, as part of the ninth grade curriculum, for...
"During the summer of 1961, a seafood dealer at Charleston, Oregon hired SCUBA ... divers to harvest clams in subtidal areas with hydraulic equipment. This operation proved to be quite efficient and was attended by considerable publicity. During the summer of 1962, several commercial and personal-use diggers equipped themselves with...
A liquid-extraction procedure for the concentration of zinc in
sea water was developed. The metal ion in sea water was chelated
with sodium diethyldithiocarbamate and extracted into an organic
solvent, methylisobutylketone, at the normal pH of sea water. A
back-extraction into HCl followed, providing a concentration of 30X
for the...
A study of the immature stages of the subfamily Troginae in
North America was conducted from the spring of 1963 through the
spring of 1965, Larvae of Trox and Omorgus were easily reared in
the laboratory, but all attempts to rear the larvae of Glaresis were
unsuccessful,
The suberosus group,...
Shoot apex senescence is defined as the collective progressive
and deteriorative processes which ultimately terminate the functional
life of the shoot apex. Senescence of shoot apices of Pisum sativum
L. 'Alaska' as measured by cessation of stem elongation was delayed
by removal of flowers and by treatment with gibberellin A₃...
The study of nonlinear vibrations of systems having two
degrees of freedom has met considerable attention during the past
few years. Nonlinear symmetrical systems have received most of it.
Normal mode motion of a system is defined as a periodic motion
such that the masses of the system assume repeated...
This thesis deals with the effect of pressure coupling on the
stresses in shells having geometric discontinuities. The problems
are, 1) cylinder with an axially symmetric thickness change and
2) cylinder with a hemispherical end closure. Solutions to the
above problems are based on differential equations that included the
straightening...