Preliminary work on a crude in vitro system for glutamic-γ-semialdehyde
synthesis in Escherichia coli has been described. The
cell extract synthesis of GSA is inhibited by proline; other allosteric
characteristics observed include sigmoidal substrate variation and
inhibition plots of activity. The membrane fraction and a low molecular
weight compound in...
Phagotrophic protists are major consumers of microbial biomass in aquatic ecosystems. However, biochemical mechanisms underlying prey recognition and phagocytosis by protists are not well understood. We investigated the potential roles of cell signaling mechanisms in chemosensory response to prey, and in capture of prey cells, by a marine ciliate (Uronema...
The purpose of this study was to discover if a relationship so necessary to effective supervision could be established and maintained over distance. Experiences with a combination of distance and direct supervision in the form of Internet interaction coupled with face-to-face, monthly group supervision were examined. Four participants, all masters-level...
Today's office worker is being expected to operate computers in order to
increase office productivity. While learning the new technology is a positive
challenge for most people, some students experience a negative computer
attitude when faced with computer training. This study sought to determine if
there were significant differences about...
The purpose of this study was to compare the effectiveness of
television lectures and television lectures reinforced with two types
of recorded media (audio-slide kits and super 8mm movies with
sound) with the traditional lecture method of teaching three selected
lessons of clothing construction. The research was conducted winter
and...
This study compared two groups of home sewers in relation to
their sewing practices, perceived sewing competence, sex-role
concept, and selected demographic factors. A review of literature
indicated an increase in home sewing that began in the 1960's with
the greater availability of fabrics in a wider range of fibers,...
The presented study was undertaken to determine the
operational catabolic carbohydrate pathway(s) contributing
to the synthesis of the DNA of the actinophage for
Streptomyces griseus. The incorporation of glucose-6-¹⁴C versus glucose-1-¹⁴C was determined for the
deoxyribose and purine and pyrimidine bases of the phage
DNA. The specific activities of the...
This report frames the debate over studded tires in terms of economic principles of marginal cost pricing and efficient resource allocation. In the absence of a user tax, the pavement damage caused by studded tires results in inefficient pricing because social costs associated with the damage are excluded from the...
The purpose of this investigation was to modify the procedure
of Bills, Khatri and Day for use in the development of a suitable
method for determining the quantitative distribution of the free fatty
acids (FFA) in normal, heated, and rancid milk and milk fractions
The method consists of extracting the...
Oral contraceptive (OC) users frequently have lower vitamin B₆
status than non-oral contraceptive (NOC) users. However, normal dietary
intake, a possible factor, has not been adequately studied.
Therefore, 26 OC users and 25 NOC users, of college age, were compared
with respect to dietary intake of vitamin B₆ and blood...