The objectives of this research were to determine the effects of various soil parameters on the reaction of Isopropyl-N-(3-chlorophenyl)Carbamate (CIPC) with a soil and to relate enthalpy values for the adsorption to chemical or physical bonding mechanisms. Six Oregon soils providing a range of pH, organic matter, clay, iron oxide,...
A two-dimensional perturbation theory computer code,
PERT-IV, has been developed that will calculate reactivity
coefficients, the delayed neutron fraction, and the neutron
generation time.
The program uses the output flux and adjoint
flux from either a diffusion theory or transport theory program.
A discussion and derivation of the perturbation equation...
This study¹ was undertaken: (1) to obtain information on the distribution of the snail, Oxytrema silicula, in three coastal rivers in Oregon, and the seasonal incidence of infection in these snails and in snails from an inland stream, with the cercariae of the trematode, Nanophyetus salinincola; (2) to follow cercarial...
A method of treating resonance captures for few energy group
calculations is developed using the Narrow Resonance-Infinite
Absorber approximation to the resonance integral. The application
of this method is not restricted to this approximation, however,
as other approximations to the resonance integral could also be
used.
The approach presented defines...
Because of the complicated form of the diffusion equation,
approximations are necessary to treat the energy dependence for
practical problems. The standard model is the few group approximation.
A second approximate form, the overlapping group or modal
method, is examined and more fully developed in this work to provide
an...
Lithia-silica compositions between lithium disilicate and pure
silica were explored theoretically and experimentally, with special
emphasis on structural miscibility. Diffusion couples of vitreous
materials were prepared and annealed. Best success in preparation
was achieved by using electron-bombardment heating in vacuum to
melt the less refractory glass and let it solidify...
The work in this thesis involves the development of specimen preparation techniques for the observation with an electron microscope of alpha
particle tracks in cellulose nitrate plastic.
Both direct observation
using thin films and replica production techniques were investigated.
Direct observation of the alpha tracks was accomplished by cutting
thin...
The respiratory tract is lined with a mucous blanket which is
motivated by a ciliated epithelium. This blanket includes a lower
serous layer of fluid through which the cilia beat and an upper viscid
layer into which particulates from the inhaled air are deposited.
The movement of the mucous blanket...