A series of experiments was designed to investigate differential
flood-tolerance and the phenomenon of flood-induced stomatal closure
of several fruit tree species. The first two experiments were conducted
with potted plants submerged outdoors 5-10 cm above the soil line.
Plant morphology, growth, leaf conductance (cL), and soil oxygen diffusion
rate...
A great concern about the effect of oxygen in Se samples has been solved by a purification method called the distillation-with-Al method. The electrical conductivity of liquid Se prepared by this purification method shows Arrehnius behavior with a single activation energy and positive thermopower within the experimental temperature range. This...
Measurements are made of the conductivity and Hall mobility of
liquid solutions of thallium-tellurium, in compositions ranging from
pure tellurium to 69.0 atomic percent thallium. At compositions on
the thallium-rich side of intrinsic composition (66.7 atomic percent
thallium) both the conductivity and Hall mobility are temperature
independent, and the data...
The longitudinal magnetoresistance of single-crystals of
mercury is investigated experimentally, both in the low field and
the high field regions. The variation of the magnetoresistance with
crystal purity, orientation, size and temperature below 4.2°K is
presented. In the low field region the data are discussed in terms
of existing theory....
The most important purposes of this study were to: (1) determine
the extent of cooperation and coordination that currently exists in
selected community colleges which have community school programs
in their college districts, and (2) clarify the multi-roles of community
schools and of community education in community colleges. Other
purposes...
This study was an experimental investigation of two methods of
teaching students the cognitive knowledge and psychomotor skills pertaining
to the automobile brake system. The methods investigated
were the experimental individualized learning system and the traditional
group-lecture and demonstration.
Experimental Design and Procedure
The experiment, conducted during the spring term...
Purposes of the Study: The study had several purposes, the major one being to identify common professional education competencies essential to adequate performance by administrators of vocational education at the community college level. Other purposes of the study were to: (1) determine if significant differences existed in vocational administration competencies...