This research has focussed upon both the in vitro and in vivo characterization
of the recycling pathway leading from 5'-deoxy-5'-methylthioadenosine
to methionine in fruit. In addition to contributing towards polyamine
biosynthesis and other important cellular functions, in plant tissues
these events also serve to generate the hormone ethylene. A broad...
The utilization of ⁷⁷ [superscript m] Se, half life 17.5 s, and ⁷⁵ Se, half life 119.8 d, for quantification of trace amounts of Se in well water and biological materials by means of instrumental neutron activation analysis (INAA) is described. A Se detection limit of 0.03 ppm was achieved...
The use of edible coatings in combination with antimicrobial
agents enhances the microbial stability of foods. In this study we
evaluated the potassium sorbate and sorbic acid permeability of an
edible methylcellulose (MC) - palmitic acid (PA) film with a MC:PA
ratio of 3:1.
Permeability cell measurements were used to...
An aspect of the genetic structure of coastal Oregon steelhead was
explored and found to gradually change in a north to south pattern for the
allelic frequencies of several enzymes. Isocitrate dehydrogenase and
superoxide dehydrogenase were the clearest examples of this pattern of
variation. This pattern was most evident in...
Tourism has become an important factor in Oregon's and
New Zealand's economies. Both destinations are trying to
attract even more tourists. However, many other destinations
are also competing for a bigger share of the tourism market.
Tourism itself is a multi-faceted phenomenon and the travel
destination decision is of some...
Dietary guidelines recommend that Americans consume no
more than 30 percent of energy intake from fat. The most
recent national survey reported that U.S. women consume
about 36 percent of energy from fat. Very little is
presently known about the fat intake, or food sources of
fat in the diets...
More Americans are participating in sport every year
and several organizations have made it their mission to
provide the opportunity for organized sport participation.
College and University intramural departments are one of
those organizations. They provide participation
opportunities on nearly every college campus. The review of
literature identifies the sociological...
This thesis reports on research conducted to determine
the information which should be included in a mechanical
design history. This is part of a larger research effort
aimed at developing a computer tool for storing and
replaying mechanical design history information. Three
question-asking protocols were conducted to determine what
information...
Sodium dodecyl sulfate polyacrylamide gel electrophoresis and
zymography were used in two separate experiments to determine the tissue
source and type of plasminogen activator (PA) produced by bovine
blastocysts. Twelve-14 d blastocysts were collected at slaughter from
estrous synchronized, superovulated and artificially inseminated Holstein
cows. In Experiment I, blastocysts were...
Norflurazon [4-chloro-5-(methylamino)-2(3-(trifluoromethyl)
phenyl)- 3(2H)- pyridazinone] and prodiamine (N3, N3-di-n-propy1-2,4-
dinitro-6-(trifluoromethyl)-m-phenylenediamine) are two herbicides
being considered for weed control in alfalfa. Rotational crops
following alfalfa may be sensitive to residues of these herbicides.
Studies were conducted in Oregon and Washington to examine the soil
persistence and activity of these herbicides on...
Increasing automation and highly flexible manufacturing processes cause increasing complexity for manufacturing system. FMS (Flexible Manufacturing System) is an approach to solve this problem. Since the elements of the FMS and manufacturing process performance are closely interrelated, the application of simple modeling and emulation techniques in the planning stages for...
Empirical observations have established connections between river network geometry
and various hydrophysical quantities of interest. Since rivers can be decomposed into
basic components known as links, one would like to understand the physical processes at
work in link formation and maintenance. The author develops a natural stochastic
geometric model for...
The eastern margin of the Eastern North Pacific Ocean
was classified into physiographic regions based on a suite
of physical characteristics. Information on cultural and
biological characteristics of this area was meshed with this
classification. The result was a classification of the
Eastern North Pacific into natural-cultural systems whose
boundaries...
Perturbed angular correlation (PAC) spectra of fully yttria-stabilized (cubic) zirconia with Y₂0₃ contents of 35.4 wt. %, 27.8 wt. %, and 16.9 wt. %, respectively, were measured using the isotope ¹⁸¹Ta as probe nucleus. PAC spectra in cubic zirconia are characterized by a wide frequency distribution due to contributions of...
In 1982 a protohistoric archaeological site along the Applegate River in southwest Oregon was excavated by Oregon State University Department of Anthropology. Three housepits and a possible menstrual but were uncovered with lithic, faunal, and archaeobotanical elements recovered from house floors and hearths. Seven botanical taxa were represented by carbonized...
Obesity affects one out of every four Americans and represents a
serious health hazard in the United States. Serious chronic diseases
associated with obesity include heart disease, cancer, and adult-onset
diabetes mellitus. There has been a rapid expansion in the number of
weight control centers since the 1970s, yet there...
A numerical technique to compute the time domain response of multiconductor lossy
uniform and nonuniform lines terminated in general nonlinear elements is presented. The
technique is based on the generalized method of characteristics. The method transforms the
original system of transmission line equations into a system of ordinary differential
equations....
A characterization of the antigenic determinants (epitopes) of the glycoprotein (G) of infectious hematopoietic necrosis virus (IHNV) was made with different regions of the G gene expressed in Escherichia coli. A cDNA copy of the G gene was divided into four fragments after Taq I digestion and these fragments were...
At least 105% nearly east-west extension of late Cenozoic age has been accommodated by down-to-the-east normal and oblique-slip faults in the central Wassuk Range. One northwest striking, right-lateral strike-slip fault probably contributes an additional component of WNW-ESE slip. Movement on the normal and oblique-slip faults in this area tilt the...
This study examined the occurrence of coarse woody debris (i.e., pieces greater than 0.15 m in diameter and 2.0 m in length) in first- through fifth-order streams located within the Drift Creek Basin of the Oregon Coast
Range. Nine "tributary reaches" were surveyed to determine how three land management treatments...
Estuarine residence and growth of juvenile chum salmon
(Oncorhynchus keta) from Netarts Bay, Oregon were estimated
from daily-formed growth increments of sagittal otoliths
which are distinguishable from accretion patterns formed
during freshwater residence. Estuarine residence time was
inversely related to the average size at which juvenile chum
salmon entered Netarts...
The resurgence of creationism the past few years has been led by advocates
of recent-creationism. These individuals, a minority among creationists in general,
argue that the entire universe was created approximately 10,000 years ago in one six-day
period of time. Recent-creationists support their position by appealing to the
Genesis account...
The vegetation response of spring and fall prescribed fires in basin big sagebrush (Artemisia tridentata subsp. tridentata Nutt.)/Idaho fescue (Festuca idahoensis Elmer)--bluebunch wheatgrass (Agropyron spicatum Pursh. (Scribn. & Smith)) communities was measured at the John Day Fossil Beds National Monument in eastern Oregon. Objectives of the study were to quantify...
Two sets of experiments measured changes in the oxygen consumption of the euryhaline teleost Oreochromis niloticus during acclimation to progressively increased salinity. Six acrylic respirometers were constructed for this purpose. The salinities tested were 9, 18, 27 and 36 ppt, with 36 ppt considered as full strength seawater. Fish were...
The middle to upper Eocene Tillamook Volcanics form the basement in the Rock Creek - Rocky Point area. These tholeiitic to alkalic basalts, basaltic andesites, and andesites were erupted as shield volcanoes seaward of the strandline ontop of an older deep-marine mudstone unit (Yamhill Formation) and an accreted portion of...
Digitally-programmable filters have been an ongoing research topic for a number of years. The first such filters were FIR transversal filters using Charge-Coupled Devices (CCD's) and IIR recursive filters using switched-capacitor (SC) techniques. Although both techniques achieve excellent results, they require non-standard and/or additional IC fabrication steps. Low substrate doping...
The objective of this thesis is to present the architecture and
design of a neural network-based pattern classifier. The classifier
detects textual characters which have been translated, rotated, and
corrupted by noise. This form of pattern classifier differs
significantly from traditional pattern classifiers. The neural network
architecture used in implementing...
Chlorinated low molecular weight solvents have been discovered in a number of the nation's groundwater supplies. Remediation of these aquifers will require some form of treatment. Presently, the dominant treatment method is air stripping which results in transfer of the solvent from the aqueous phase into the atmosphere. Biodegradation is...
Advances in VLSI array processing have led to many new
parallel structures for real-time Digital Signal Processing (DSP)
applications. Among all the architectures, systolic arrays have played
an important role because systolic arrays have regular, local
interconnections with modular structure. In ordinary systolic arrays,
however, all processing operations and data...
Using an oral history method, the author has recorded the life
history of Rosa González Gómez, a Mexican woman who spends part of
each year in the United States and part in Mexico. Comparing the
story of Rosa's life, as told in her own words, with literature in the
social...
Particleboard is a widely used composite panel product
consisting of consolidated wood particles and adhesive. On
a macro level the panel appears to be homogeneous, however,
its density varies both throughout the plane of the panel
as well as through its thickness. Of concern for this
thesis is the through-thickness...
The American Proposed Standard for Digital
Cartographic Data presents the new national exchange format
which allows the transfer of spatial data among parties
that may use different computer hardware and different
operating system software.
A translator program for the conversion of the AutoCAD
DXf data structure to the Standard's output...
The Upper Devonian Fenstermaker Limestone is a thickening-upward sequence
of interbedded sandy intrapelsparite and subordinate calcareous siltstone and mudstone
which averages 190 ft (58 m) thick in the northern Antelope Range. The Fenstermaker
Limestone is revised and restricted herein to include only those rocks above a basinal
shale sequence of...
Twenty Russet Burbank seed lots were collected from
four states and one Canadian Province in 1988 and planted in
replicated trails at Powell Butte and Hermiston, Oregon as
part of a two year study to quantify clonal differences in
the cultivar. Samples of each seed lot were concurrently
increased and...
The Sulaiman foldbelt is an active and conspicuous tectonic
feature on the northwestern margin of the Indo-Pakistani plate.
Seismic reflection data have been combined with surface geological
mapping and drillhole data to interpret the structural style and
tectonic shortening of the eastern Sulaiman foldbelt and its adjacent
foredeep. The data...
The North Potwar Deformed Zone (NPDZ) is part of the active foreland fold-and-
thrust belt of the Salt Range and Potwar Plateau (SR/PP) in northern Pakistan.
About 500 km of seismic reflection profiles are integrated with surface geologic and
drilling data to examine the structure of the NPDZ, in general,...
The objective of this study was to examine optimum conditions for primary
culture of porcine preadipocytes. Dorsal subcutaneous adipose tissue was obtained
from biopsies of 40-50 kg pigs and digested with collagenase in Krebs Ringer
Bicarbonate buffer. Isolated stromal vascular cells were cultured in different test media.
Stromal vascular cells...
The growth, size and age composition, mortality and reproduction of darkblotched rockfish (Sebastes crameri) were examined using fishery data and analysis of fish
characteristics for samples collected of f the Oregon coast. A total of 1060 fish, caught by commercial groundfish and shrimp trawlers operating out of Newport, Coos Bay...
This investigation was conducted to determine the
effect of estrogen replacement therapy (ERT) on vitamin B-6
status of postmenopausal women. Nineteen postmenopausal
women served as subjects. Nine (54.7 + 4.7 years) were
taking ERT (experimental group); ten (56.8 + 2.3 years)
were not (control group). For three consecutive days,
subjects...
The type of plasminogen activator (PA) secreted by bovine embryos was identified. Day 12 to 14 blastocysts were collected at slaughter from estrous-synchronized, superovulated and naturally mated crossbred beef cows. Embryos were either left as intact embryos (E) or microdissected into component embryonic discs (ED) and trophoblastic vesicles (TV). Intact...
The environment has been exposed to a number of hazardous chlorinated
organic compounds. These compounds may be anaerobically biotransformed by
sequential reductive dechlorination reactions in which the chlorine atoms are
replaced with hydrogen atoms. Because reductive dechlorination processes may
occur very slowly in the environment and chlorine position affects the...
Eleven sedimentary and volcanic rock units are mapped and described in the thesis area, and chronicle the dynamic geologic history of the Tillamook embayment from the Oligocene through the middle Mlocene. The
oldest unit is the Zemorrian to early Saucesian Smuggler Cove formation, a bathyal tuffaceous mudstone with some thin-...
This thesis discusses an approach whereby
Microsoft's MS OS/2 is provided with a means of running
the Department of Defense's Transmission Control
Protocol/Internet Protocol (TCP/IP).
This is done by developing a Packet Protocol Device
Driver. This device driver complies with the Packet
Driver Specification from FTP Software Inc. and with...
Both travel times and amplitudes of large offset refracted and reflected arrivals
observed during GLIMPCE (Great Lakes International Multidisciplinary Program on
Crustal Evolution) along line A in Lake Superior have been modeled using two-dimensional
ray tracing techniques. Forward modeling was used to iteratively refine an
initial velocity model that was...
The German hop Hallertauer, hallertauer is highly
valued because of its "noble aroma", but it has a very low
yield when cultivated in the U.S. Two new crosses of
Hallertauer, U.S.D.A. 21455 and 21459, have high yields
and promising aroma characteristics.
In order to predict sensory properties of beers as...
Meadowfoam (Limnanthes R. Br. spp.), a source of C₂₀
and C₂₂ fatty acids, is a new industrial oilseed crop
adapted to the Willamette Valley of Oregon. Increased oil
yield per land area may increase the rate of meadowfoam
commercialization. Using two half-sib L. floccosa x L.
alba lines, 85-765 and...