The purpose of this investigation was to purify and characterize
the autolytic enzyme from cell walls of Bacillus subtilis 168. The
crude enzyme was obtained by autolysis of purified cell walls in
buffer at 37° C. Two purification methods were developed. The first
involved fractional precipitation with ammonium sulfate. The...
The use of petroleum oil prevented, to varying degrees: the
transmission of three stylet-borne viruses in three different crops.
The use of oils resulted in a marked improvement in the number of
lily bulbs harvested from treated plots as compared to the number of
lily bulbs harvested from untreated plots....
Raw and biologically stabilized Kraft mill effluents were introduced
into laboratory artificial streams at a ratio of 15 ml per liter
of water over a two year period. Effluent from the stabilization pond
of a second mill was introduced at concentrations of from 5 to 40 ml
per liter of...
This thesis reports a portion of a general ecological study of
a stream under conditions of controlled flow and low levels of organic
enrichment. It is concerned with the effects of experimental variations
of light intensity and concentration of soluble organic enrichment
imposed on seasonal variations of temperature and total...
The purpose of this study was to isolate and characterize any
segregants of the heterogenotes formed from sexduction by an F'
donor. Following the mating of F' W4520, carrying an F' gal₁⁺
gal₂⁺ factor, with W3350, a gal₁⁻ gal₂⁻ recipient, a number of
recombinant clones were picked and examined for...
Investigations were conducted to study in detail some biochemical and physiological aspects of ripening in pears. Anjou pears
picked at different degrees of maturity were treated with Ethrel
(2-chloroethane phosphonic acid), 4000 ppm, and ethylene, 500 ppm,
for different lengths of time. Respiration rate was measured twice
daily and changes...
The first area of investigation involves the electron transport
of sub-mitochondrial particles and their components. The second
area is the synthesis of ATP and other energy linked reactions and
components of the energy conservation and transfer apparatus.
Investigations on the nature of the tetramethyl-p-phenylenediamine
(TMPD) shunt indicated that tetrachlorohydroquinone (TCHQ)...