Plywood panels collected from thirty seven mills located
throughout the Pacific Northwest they were treated with chromated copper
arsenate Type C (CCA-C) or ammoniacal copper zinc arsenate (ACZA) using
modified full cell and full cell processes respectively. Preliminary
tests were performed to determine plywood sample size, replication, and
treating schedule....
The rainbow trout (Oncorhynchus mykiss) model
of chemical carcinogenesis is becoming increasingly
important as a supplement to rodent studies. However,
much of the molecular biology of the carcinogenic
response is still unknown in the trout model. The ras
gene family has been implicated in the tumorigenesis of
both spontaneous and...
The goal of this study was to gather information on the autecology,
reproductive ecology, and population dynamics of Astragalus australis
var. olympicus as a baseline for conservation strategies and to help
explain its restricted range. Approximately four thousand
individuals occurred in four known population centers in the Olympic
Mountains, Olympic...
Two experiments involving interactions between wheat
(Triticum aesitivium L.) cultivars and rust pathogens were
investigated. One experiment evaluated the aggressiveness
(measured by infection efficiency and latent period) of
populations of Puccinia recondita Rob. when inoculated on
the cultivar they were isolated from, their "own" cultivar,
and when inoculated onto other...
The biocontrol potential of Trichoderma harzianum Rifai,
Trichoderma polysporum (Link.:Pers.) Rifai, Scytalidium aurantiacum
Klingstr. et Beyer or a Penicillium sp. against Trametes versicolor
(L. :Fr.) Pilat, Neolentinus lepideus (Fr.) Redh. et Ginns, Postia
placenta (Fr.) M.Lars. et Lomb. and Irpex lacteus Fr. was evaluated
using agar plate, soil bottle and...
A new class of nearshore waves based on the shear instability of a steady longshore current is discussed. The dynamics depend on the conservation of potential vorticity but with the background vorticity field, traditionally the role of Coriolis in larger scale flows, supplied by the shear structure of the longshore...
A 5-year time series of coastal zone color scanner imagery (1980-1983, 1986) is used to examine
changes in the large-scale pattern of chlorophyll pigment concentration coincident with the spring
transition in winds and currents along the west coast of North America. The data show strong
interannual variability in the timing...
We investigated the effect of pyridoxine
supplementation on the utilization of protein in a low-protein,
plant-based diet in four subjects (2 men and
2 women), aged 21 to 38 years. Following two days of a
negligible protein diet, this 34 day study was divided into
three dietary periods: the subjects...
Deposition of the Middle Devonian part of the Denay Limestone
and Bay State Dolomite in the northern Antelope Range and Fish
Creek Range, respectively, took place on and in front of a carbonate
platform with a lime sand shoal at the shelf edge. In the Givetian part
of the Denay...
An experiment was conducted to determine the
suitability of a new variety of yellow pea (Pisum sativum
L., var. Miranda) as a feed ingredient in broiler breeder
diets. Two-hundred twenty-five I S A Vedette dwarf broiler
breeder pullets were fed either a corn-soy (CS) or corn-pea
(CP) diet from day...
Residual roots from previous stand components are often cited as a major benefit to stump-sprouts of tanoak in southwest Oregon and northern California. Established patterns of belowground carbon allocation and root/shoot maintenance suggest that residual root systems of stumps
will be reduced by carbohydrate depletion and root mortality and by...
A 2-year field study was conducted on the effects of two sulfur
fertilizers (calcium sulfate or elemental S, 0 or 50 kg S ha⁻¹ yr⁻¹)
on the distribution of sulfur fractions (inorganic sulfate, C-bonded,
ester sulfate, and residual S), arylsulfatase enzyme activity, and
microbial biomass carbon (C) and sulfur (S)...
The purpose of this research was to examine the
effects of fishing on life history parameters of the spiny
lobster, Panulirus homarus. The study areas selected had
different levels of fishing pressure but relatively similar
habitats. The lowest fishing effort was found in Hadbin
while the highest fishing effort was...
Conditions were established for inducing pear blossom blast
caused by Pseudomonas syringae (Ps) on both attached and detached
shoots. The incidence of disease was proportional to the log of Ps
population under optimal temperature, moisture and bloom developmental
stage. Highest incidence of infection followed occurrence of a major
exotherm in...
Formal methods using text to specify abstract data types (ADTs) are powerful, but they require great effort and a high level of expertise. Visual programming languages present an alternative way of programming but are limited to building small programs. This research presents an approach for specifying ADTs using a combination...
Techniques have been developed for measuring the
temperature, stable species concentrations, and atomic
radical concentrations during a transient combustion
event. They combine the features of direct sampling with
two spectroscopic techniques to produce relatively simple
diagnostic techniques to obtain time-resolved
measurements. In this study, a transient event was
provided by...
This thesis concerns itself mainly with analytical methods
development and analytical applications in the field of drug metabolism
studies. The determination of the analgesic pentazocine and its
metabolites in the greyhound are studied.
Pentazocine and all of its possible metabolites are isolated from
the greyhound urine by a the multi-solvent...
Reactor refueling is a computationally intensive
problem solving process that requires automation since
significant resources are expended upon the search for
an optimal core loading. Without imposing some
constraints upon the configurations investigated, an
extremely large number of prototype loadings may be
generated without discovery of an improved loading. As...
This study investigated terminal and instrumental value
priorities of students in various majors within an academic
department. The investigator tested a sample of 99
volunteers of both sexes from several classes in the
department of Speech Communication at a major land grant
university by use of the Rokeach Value Survey....
The standard (ASTM) steady-state method for determining the thermal
conductivity of insulating materials (like wood based composite materials)
is time-consuming, and its use is therefore limited to dry material;
moisture migration occurs in hydrated materials and this limits accuracy.
The proposed unsteady-state method is fast and therefore enables thermal
properties...
The purpose of this study was to document, through
personal interviews, perceptions, attitudes and coping
skills utilized by women who have survived breast cancer
treated by mastectomy for at least 5 years without
recurrence.
A semi-structured interview guide was developed with
input from professionals in the field. The questions were...
The goal of this study was to determine the extent to which the Silviculture Institute, a 12-week continuing education program for mid-career silviculturists, has influenced the practice of silviculture in the Pacific
Northwest. Desired impacts were determined in conjunction with the three major stakeholders in the Institute: program leaders charged...
The purpose of this study was to investigate the
financial and academic problems perceived by Saudi
graduate students while they are studying in the United
States. The study also attempted to determine if there
were significant differences in the five perceived
problem areas among respondents in the various categories
identified....
Resource managers and decisionmakers must often decide how to allocate and manage conflicting uses of scarce natural resources. In many cases, one use of a natural resource precludes alternative uses of the same resource. In order to make informed decisions regarding the allocation and management of such scarce natural resources,...
The characteristics and associated storage dynamics of approximately 2000 pieces of fine woody debris (FWD; 2.5 cm <diameter<10 cm and 0.3 m<length<10 m) was evaluated over a three-year period in two undisturbed
salmonid nursery streams in Southeast Alaska. To index a given reaches propensity to capture and store FWD over...
The Control-Oriented Local Area Network (COLAN) is a
distributed control system for a series of networked
microcontrollers, which has been under development at Oregon
State University since 1986. A reliable master controller, functioning
both as a task scheduler and as a network controller, is
required to allow users to perform...
This research solves the problem of connecting a Macintosh to a Unix machine and presenting the Macintosh Desktop to Unix. Unix Files can be viewed. copied. renamed and opened in the same manner as Macintosh files. Unix programs and shell commands can be defined and attached to Macintosh menus and...
A framework is presented for a more causal explanation and ordering of stream characteristics than traditional means have used. Patterns of stream habitat distribution are related to particular characteristics of the geomorphology of watersheds. Variability in stream characteristics can be explained by the spatial distribution of properties of the watershed...
The effects of beaver (Castor canadensis) on stream morphology, riparian zones, and coho salmon (Oncorhynchus kisutch) fry in Cape and Cummins Creeks, Oregon, were examined using stream surveys, vegetation transects, and coho salmon fry counts in 1987. The basin around Cape Creek has been extensively logged since the late 1940's....
The purpose of this study was to determine the need
for mathematics inservice training for untrained and
trained teachers in K-7 rural schools in Manicaland,
Zimbabwe. The auxiliary teachers do not have any
professional preparation before entry into the teaching
profession. The study sought to determine the mathematics
areas needed...
The purpose of this thesis is to apply the Canonical Correlation
Analysis (CCA) which belongs to the parametric methods for power
spectral estimation in the environments of either white noise or
colored noise. It is shown that optimal state space variables
belong to the range space of the canonical vectors...
Of great benefit, but not limited to seafloor mineral
exploration, is a technique that fairly rapidly determines the
composition of a drilled vibracore (in a time comparable to the time
involved in obtaining the core). The rapid assessment is desired to
predict whether a given region warrants further exploration by...
Cuphea laminuligera Koehne and Cuphea lutea Rose in Koehne are
undomesticated species having potential as oilseed crops. Genetic
markers and mating systems have not been described for these
species. Our objectives were to survey these species for allozyme
variation, analyze the segregation and linkage of polymorphic loci,
estimate autofertility and...
Recently, switched-current circuits have received great
attention because they offer potentially better performance in terms
of speed, low voltage power supplies, and accuracy in mixed-mode
analog-digital signal processing. In this thesis, the distortion
characteristics, DC offset and AC gain errors induced by the threshold
voltage, channel width, channel length, and...
Whole tree excavation of 41 western juniper (Juniperus
occidentalis Hook.), ranging in age from 2 to 34 years old,
was used to assess the development and structure of root
systems, to determine biomass allocation patterns, and to
develop mathematical relationships for estimating biomass
and root system dimensions in seedling and...
This study examined the ralationship of organizational
structure and job satisfaction in Iranain iron companies.
Sixteen of 27 Iranian iron companies were randomly
selected for the study, and 195 middle managers in the 16
companies were surveyed with a three part instrument
consisting of Likert's (1967) Profile of Organizational
Characteristics;...
This report describes the Graphical Editor part of DataLab, a visual programming tool for the specification and synthesis of abstract data types (ADTs). DataLab consists of two major components: graphical editor and source code generator. The graphical editor is used to design an abstract data structure and its operations by...
Along with the increased attention in the past two decades on the values of wetlands and the documentation of great losses of wetland acreage has been a growing need for a comprehensive assessment method for analyzing the functions of a wetland. Detailed site-specific study has been the traditional method for...