The drift velocity of electrons in pure hydrogen, in pure deuterium, and in mixtures thereof, has been observed at low pressures using the following pulse technique for these gases for the first time. Plane parallel electrodes of a known separation and immersed in the gas to be studied are connected...
Ten helminth-free sheep were given two doses of 10,000,
X-irradiated, H. contortus, third stage larvae 30 days apart. These
animals and a group of ten non-vaccinated sheep were challenged
with 50,000, normal, H. contortus, third stage larvae 60 days
following the second vaccination. Antibody levels were measured
in both groups...
Studies were conducted to determine the extent and nature of
sub-lethal effects of herbicides on plant growth. At least one
herbicide from each major chemical class of herbicides was evaluated
under greenhouse conditions. Oat plants were grown in sand
culture to eliminate soil interferences. Herbicides were applied
pre-emergence in nutrient...
Development of the posterior crossvein in crossveinless-like
strains of Drosophila melanogaster can be influenced by high temperature
shocks at specific times in pupal development.
Three sensitive periods were detected in age response studies
on Ona X, Ona II, 5-hi III; crossvein restoration at 14 hours in
pupal development, a crossvein...
Operations research is concerned with the science of decision and uses mathematical models to aid in making these decisions. In this thesis operations research is used in connection with the lumber industry. The problem of concern has to do with a lumber company that is unable to supply the mill...