This qualitative study describes and interprets the interactions of participants in a
community college writing class delivered by computer-mediated communication
(CMC). The class represented a best practice model of learner-centered instruction in a
CMC class. The description and the discussion are framed by five aspects of CMC
instruction: (1) context;...
Two studies which were similar in protocol were conducted.
Following a preliminary baseline period of 7 days, in which the
subjects consumed their self-chosen diets, they received 3 eggs daily
for 4 weeks. Depending upon the changes in plasma cholesterol in
response to 3 eggs daily, the subjects in studies...
This study investigated the attitudes of mental health counselors toward persons
with Acquired Immunodeficiency Syndrome (AIDS). Three hundred and fifty-eight
members of the American Mental Health Counselors Association were mailed a survey
packet including an Attitude Towards AIDS Victims scale and an additional two
questions assessing comfort with clients with...
The phytohormones auxin and cytokinin control plant development through a complex network of interactions which include synergistic, additive, and opposite effects whose mechanisms are unknown. The auxin-insensitive diageotropica (dgt) mutant provided a tool to dissect the relationship between auxin- and cytokinin-induced responses in tomato. Morphological, physiological, and molecular data support...
The plant hormone auxin regulates many aspects of plant growth and
development. At the cellular level, auxin can stimulate cell division, cell elongation, and
cell differentiation. Little is known about the molecular mechanisms that mediate auxin
action at this level, although changes in gene expression have been implicated in each...
The thesis begins with an introduction to signal transduction
and an analysis of current understanding of plant signal
transduction. There are similarities between plants and animals,
but also key differences, including lack of protein kinase C and of a
cAMP signaling pathway in plants, and presence in plants of
calcium...