Dwell time low cycle fatigue (DLCF), low cycle fatigue (LCF), and creep tests were performed at ambient temperature on Ti-6Al-2Sn-4Zr-2Mo-0.1Si (Ti-6242Si). Test specimens were solution annealed at various temperatures below the beta transus to control the volume fraction of primary alpha. The influence of the changes in primary alpha phase...
Greenhouse and field grown coffee plants were used to
study the synchronization of flowering and fruiting. The
purpose of these studies was to develop methods of
improving the selective harvesting of mature coffee fruits
by machine. The studies were divided into 4 parts: 1)
Synchronization of flowering, 2) Synchronization of...
The influence of overstory openness on the reproductive
ecology of Pacific yew (Taxus brevifolia Nutt.) was
investigated on 4 sites in western Oregon over 2 years. The
breeding system of T. brevifolia was found to deviate from
pure dioecy under a broad range of canopy and site
conditions. Production of...
The purpose of this investigation was to examine the
literature in education and library science to determine
why standards for education libraries have not been
realized, in the light of the specific criteria for other
areas of teacher education accreditation. Educators and
librarians in favor of strict standards for education...
Two studies on Catherine Creek and Meadow Creek of the Upper Grande Ronde
River basin, quantified several physical and biotic influences on woody riparian community
composition and structure. The Catherine Creek study examined the association of woody
riparian species with elevational and geomorphic gradients. The Meadow Creek study
examined the...
Statistically, travel by air is one of the safest forms of transportation. Yet we
continue to experience aviation tragedies. Do we fully understand flight safety or is
there another way of looking at the problem? In this work a new way of approaching
the question of flight safety is developed,...
Although endothermy is one of the most significant evolutionary developments in the vertebrates, its origins among extinct taxa have traditionally been difficult to determine. Endothermy is primarily an attribute of the "soft anatomy," and its key features, such as complex lungs, elevated blood oxygen carrying capacity and mitochondrial density, do...
Pea seed-borne mosaic potyvirus pathotype 1 (PSbMV-P1) has the ability to infect most genotypes of Pisum sativum. The exception are those genotypes that are homozygous recessive for the sbm-1 gene. The life cycle of PSbMV pathotype 4 (PSbMV-P4) is unaffected by the sbm-1/sbm-1 genotype. Infectious clones of Pl-P4 recombinants were...
Lily hybrids vary in their ability to produce
virus-free (VF) bulblets when grown from virus-infected
scales in tissue culture. Asiatic hybrids typically
produce a higher percentage of in vitro VF scale bulblets
than do Lilium longiflorum cultivars. Three hypotheses
concerning the cause of this variation are tested on five
lily...
The RNA genome of tobacco etch virus (TEV), a plant potyvirus, functions as an mRNA for synthesis of a
346-kilodalton polyprotein that undergoes extensive proteolytic processing. The RNA lacks a normal 5' cap
structure at its terminus, which suggests that the mechanism of translational initiation differs from that of a...
The foundation of the research compilation presented here began
with the derivation of an improved method for obtaining optimal in vitro
mitogenic responses in salmonid lymphocyte cultures by utilizing
autologous or homologous plasma as the primary serum supplement. It was
observed that lymphocytes which were previously unresponsive to
mitogenic challenge...
Early theoretical models for the evolution of male-female
pairing were based largely on studies of birds. These models
assumed that biparental care of eggs and young was an
essential component of pairing. However, male-female pairing
is also a relatively common social system in coral-reef
fishes, and biparental care of young...
Steel corrosion in reinforced concrete is a major concern to transportation agencies nationwide because of the expenses incurred for repair and ultimate shortening of bridge life. Cathodic protection (CP), as a remedy, has been applied to reinforced bridges in the US since 1974. However, application of this technique is largely...
Published June 1998. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
The aims of physical education in Ghana include developing personal qualities
such as competence in students and generating interest in physical education and sports
(Ghana Education Service, [GES], 1987). The GES has also reiterated the need to have
competent teachers in the implementation of the school physical education syllabus;
therefore...
The effects of 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) exposure on hepatic
pyruvate carboxylase (PC) gene expression were investigated in C57BL/6J Ah[superscipt b/b male
mice. A dose-dependent reduction of PC levels and activity occurred in animals given a
single intraperitoneal dose of TCDD in a corn oil carrier. The dose ranged from 1 to...
Hydric soils are defined through the hydric soil definition, and a means to identify hydric soils has been established through hydric soil criteria and Field Indicators of Hydric Soils in the U.S. However, the field indicators are a recent development that requires more research and testing to increase our knowledge...
A higher level of efficiency in the production of doubled-haploids must be achieved if
this procedure is to be beneficial in plant improvement. Of equal importance is the
development of protocols, which are not genotypic specific and result in progeny that represent
a random sample of gametes from the parental...
In a comparison of the mammalian and fish immune systems many similarities and differences are found. While most of the differences occur in the acquired or lymphoid arm of immunity, the nonlymphoid immune systems of fish and mammals share many similarities. For instance, both animal groups use phagocytic neutrophils and...
Mouse embryo cells cultured in vitro in serum-supplemented media undergo growth
crisis, resulting in the loss of genomically normal cells prior to the appearance of
established, aneuploid cell lines. I used the technique of serum-free cell culture to develop
a serum-free mouse embryo (SFME) cell line in which serum was...
The occurrence and timing of residential care of patients with dementia is
impacted by several care recipient and caregiver variables. Previous research has
shown a strong relationship among residential placement and marital status,
cognitive decline, deterioration in functional abilities, and presence of behavior
problems in the care recipient. Research on...
This is a bibliography of doctoral dissertations and masters' theses in forestry and related topics issued during the period from July 1981 through June 1990. The colleges and universities included are all accredited by the Society of American Foresters. The actual listings were supplied by the individual institutions. Topics covered...
Physical-biological interactions in the Southern Ocean were investigated using remote sensing data from several different satellite sensors. Satellite sea surface temperature data were used to study the dynamics of the Antarctic Polar Front (PF). Satellite ocean color data were used to estimate surface chlorophyll concentrations and their relation to various...
Chipping varieties and model systems were used to determine the role of potato
constituents on chip color. Composition was evaluated by HPLC and chip color
measured using a ColorQuest colorimeter. Reducing sugar (RS) content did not
completely explain color quality when present in low concentrations (<60 mg/lOOg).
Levels of ascorbic...
Published July 1999. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
Shrews previously recognized as Sorex monticolus were classified
into two species (one with 14 subspecies, the other monotypic) on
the basis of a morphometric analysis of 3610 individuals from
throughout their range. Sorex m. neomexicanus has been recognized
previously as a subspecies of Sorex monticolus but is recognized
herein as...
This retrospective study investigated the incidence, characteristics, and
risk factors of bone fracture among a group of 518 adults with severe mental
retardation between 25 and 75 years old. Data were collected from a large state
developmental center in the Western United States between April 1, 1991 and
March 31,...
Published February 1996. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
I have participated in a drug discovery program designed to screen marine algae for
inhibitors of cancer-related enzymes, antitumor compounds, antiinflammatory substances,
and other agents of potential pharmaceutical utility. Over 1,500 lipid and aqueous extracts
of marine plants and animals were surveyed for biomedical potential. Assays designed to
screen extracts...
The Seventh Annual James A. Vomocil Water Quality Conference was planned after three topics had been selected as being of particular interest. Wetlands, Best Management Practices, and Riparian Zone Effectiveness were the topics. Speakers were invited who by virtue of their training, their experience, or their work assignment had insights...
The Forest Service and the Bureau of Land Management propose to adopt coordinated ecosystem management direction for the lands they administer within the range of the northern spotted owl. This Supplemental Environmental Impact Statement (SETS) presents as alternatives the options, with slight modifications, developed by the Forest Ecosystem Management Assessment...