Originally used as a method to densify loose soils, controlled blasting has expanded its applicability to geotechnical engineering by becoming a research tool to physically generate liquefaction for full-scale in-situ tests, ranging from seismic performance of deep foundations to evaluating ground improvement techniques. Current methods used to design the blasting...
The fragmentation characteristics of protonated peptides have been investigated using
tandem mass spectrometry (MS/MS) under various fragmentation regimes and detailed
density functional theory (DFT) reaction pathway calculations. The DFT calculations
predict novel salt-bridge stabilized transition structures as well as consecutive reactions
occurring in proton-bound dimers for some of the ions...
Habitat fragmentation has been widely studied in the biological literature and
is considered a primary threat to biodiversity. However, there has been little research
on land-use policies to reduce fragmentation. This dissertation focuses on two major
research issues related to fragmentation policies. First, I develop an analytical model
to analyze...
RNA silencing pathways are required for a wide variety of processes in most
eucaryotes. In plants, small-interfering RNA (siRNA) arising from transposons and other
repetitive sequences is associated with heterochromatin formation and maintenance.
MicroRNAs and trans-acting siRNAs encoded at discrete loci function as negative regulators of
gene expression by triggering...
Previous studies have utilized different techniques (e.g., contingent valuation and travel cost methods) to understand users and non-users willingness to pay for natural resources, including their use of recreation areas. These techniques enable the calculation of public support, demand, and potential revenue that may influence future policy, conservation methods, land...
Two approaches to the tricyclic core of the furanoeremophilane sesquiterpenoids are described. The first approach entails a projected Diels-Alder/retro Diels-Alder reaction of an acetylenic oxazole 64. Construction of the pivotal aldehyde 67 commenced from ketone 68. The acetyenic moiety was then introduced via a Felkin-Ahn addition of lithiopropyne to aldehyde...
There were two main purposes to this study. The first was to determine the vitamin B-6 and pyridoxine β-glucoside content of selected foods commonly consumed in Malawi. The second was to examine the effect of preparation procedures of foods in Malawi on the content of vitamin B-6 and pyridoxine β-...
A theoretical study of the heat and momentum transfer resulting
from a flow of power plant condenser effluent discharged vertically to
shallow, quiescent coastal receiving water is presented. The complete
partial differential equations governing steady, incompressible, turbulent
flow driven by both initial momentum and buoyancy are solved
using finite-difference techniques...
The purposes of this study were to determine which research tasks
were necessary to the job descriptions of public school
administrators, secondary and elementary teachers; what task clusters
could be identified for college and university curriculums; what
differences existed between sample groups.
The instrument was validated through the Delphi technique....
Studies were conducted to determine the site of DCPA toxicity
on annual ryegrass. This was done by means of a technique which
used pyrex tubing and a vapor barrier to separate exposure of coleoptile
and roots of emerging grass seedlings to various concentrations of DCPA. Coleoptiles that emerged through treated...
Recent studies have shown that when milk fat is heated, a
homologous series containing the n-alkyl members of methyl ketones
with odd numbers of carbon in their chains are produced (48; 44; 38;
and 3). The same series of compounds also is found in evaporated
and dried whole milk and...
The objective of this thesis is to provide a predictive model for the archaeological investigation of the first farmsteads in the Pacific Northwest, established in the early- and mid-nineteenth century by Canadien and Métis families retiring from their service in the fur trade. Past studies of this population have either...
Three areas of liquid state theory are considered.
First, Monte Carlo computer simulation of a two-dimensional hard
disk fluid with an imbedded ellipse was undertaken to determine how a
non-spherical molecule affects intermolecular ordering. The
elliptical molecule (with axial ratios of 2, 5 and 10) altered the
isotropic distribution of...
Cyclopropenoid fatty acids cause several physiological disorders
in rainbow trout and rats. Rainbow trout appear to be more sensitive
than rats to the effects of cyclopropenoid fatty acids. Carbon-14
labeled sterculic acid with label in the methylene position of the
cyclopropene ring was injected into the stomach of rats and...
This thesis is concerned with riverfront land use in Albany,
Oregon, and is addressed to the possibility of orderly development
and redevelopment of the riverfront. It appraises the present situation
particularly in regard to the renewal cycle and the problem of
floods on the river borders. Finally this thesis provides...
The structure and transcriptional activity of intranuclear
and isolated chromatin from logarithmically growing
yeast cells has been compared to chromatin from cells which
have entered the stationary phase and ceased growing. Both
chromatins show a similar nucleosomal repeat pattern and a
160 by repeat size when digested with staphlococcal nuclease....