The principal salinity extrema and extremum surfaces of the
world ocean are described by the analysis and plotting of data from
885 hydrographic stations in the three major oceans, the Southern
Ocean, and the American Mediterranean Sea. The distributions of
salinity, temperature, depth, and density along the extremum surfaces,
plotted...
Models were developed that described cohort strength of female
Dover sole (Microstomus pacificus) and female English sole (Parophrys
vetulus) in stocks off the Columbia River as functions of environmental
variables. The environmental variables considered were those
that could hypothetically influence spawning success or survival.
They included a spawning power index,...
Demographic characteristics of juvenile Dover sole
(Microstomus pacificus) were examined in relation to
physical and biotic factors to develop a hypothesis
explaining annual variations in recruitment. Surveys were
conducted along the Oregon continental shelf at depths
between 50-400 m bimonthly during 1989 and annually (in
March) between 1990 and 1993....
Chamaecyparis lawsoniana, an extremely valuable timber tree
species, is highly susceptible to a serious, soil -borne root disease
caused by Phytophthora lateralis. Disease outbreaks of epidemic
proportions are continually causing high mortality in natural stands
of the host tree. Practical control measures rely on an understanding
of the many factors...
Processes of metamorphosis, settlement, and growth were examined in Pacific sanddab
using field studies and otolith microstructure. This flatfish transforms at large sizes, has a
gradual metamorphosis, and settles to a nursery on the middle continental shelf. Eye migration
takes 3 months and "metamorphosis proper" which begins after completion of...
The early life history stages and metamorphosis in Dover
sole (Microstomus pacificus) are described from 201 larvae and
juveniles. Unlike other pleuronectids, with the possible exception
of the deep-sea sole (Embassichthvs bathvbius), initial migration of
the left eye is not associated with metamorphosis or transition from
plankton to benthos. The...
Within the field of science communication, the voices, perspectives, and experiences of the LGBTQ+ community have long been kept at the margins. This has led to a gap in material that recognizes queer individuals and communities as audiences, communicators, and stakeholders in STEM. I address this gap by generating a...
Many mycorrhizosphere microorganisms can produce
plant growth regulating compounds in vitro. Plant growth
regulating compounds are known to mediate root growth and
development. In reforestation practices, conifer tree
seedling growth and survival are linked to rapid root
growth and development after outplanting. Multifactorial
experiments were conducted to document variations in...
Two studies used DNA markers to assess their usefulness in germplasm identification and evaluation of genetic stability in four cryopreserved Rubus accessions that were stored for over 10 years in liquid nitrogen. In the first study, 12 robust Simple Sequence Repeat (SSR) markers were developed from two microsatellite-enriched libraries of...
The behavior of all of the observed molecular band
emission as well as the prominent atomic line emission
from a pulsed microwave helium plasma is given. Extensive
efforts to purify the helium include the use of a
uranium getter, a quartz diffusion tube, and a cataphoretic
discharge. The plasma is...
A series of experiments was designed to investigate differential
flood-tolerance and the phenomenon of flood-induced stomatal closure
of several fruit tree species. The first two experiments were conducted
with potted plants submerged outdoors 5-10 cm above the soil line.
Plant morphology, growth, leaf conductance (cL), and soil oxygen diffusion
rate...
The goal of this study is to test the accuracy of
various mutual fund timing and selectivity models under a
range of portfolio managerial skills and varying market
conditions. Portfolio returns in a variety of skill
environments are generated using a simulation procedure. The
generated portfolio returns are based on...
Historians and sociologists of science often identify the efflorescence of social stud ies of science with the work of postwar American intellectuals such as Robert K. Merton and Thomas S. Kuhn. They often also refer to the views of Michael Polanyi (1891-1976) on the roles of tacit knowledge, apprenticeship, social...
A study was conducted to characterize the vesicular-arbuscular
(VA) fungi of apples grown in Oregon. Using roots and soil from
apple orchards as inoculae, six different fungal species were found
in pot cultures: Gigaspora margarita Becker and Hall, Glomus fasciculatum
(Thaxter sensu Gerdemann) Gerd. and Trappe, Glomus mosseae
(Nicol. and...
A diallel cross consisting of ten parents was grown on the
Hyslop Agronomy Farm near Corvallis, Oregon, in order to obtain
estimates of the gene action contributing to yield and its components
in wheat. Gene action estimates were obtained by two methods of
diallel analysis and from narrow sense heritability...
Leaf and fruit seasonal mineral fluctuations, fruit endogenous
ethylene, maturity and quality of 'Starkspur Golden Delicious' apple
(Malus domestica Borkh.) on six rootstocks: Seedling, Mailing (M)1,
M7, M26, Mailing Merton (MM)106, OAR-1, in a high density orchard
with two levels of each of the soil applied potassium (K₂SO₄) and
nitrogen...
The nature of inheritance and possible associations for traits
influencing earliness and grain yield were investigated using a four
parent diallel of winter and spring wheat cultivars.
More genetic variability was observed for the traits measured in
segregating populations resulting from crosses between winter and spring
type wheats in contrast...
The single-cross and most F₂ progenies of 19 genotypes of
tall fescue (Festuca arundinacea, Schreb. ) were used to study the
breeding behavior of forage yield. Parental genotypes were selected
for high self-sterility, high chromogen and high crude protein. These
were studied in two groups of nine intermediate and ten...
The inheritance of ten characteristics of sweet corn was studied
by quantitative genetic analysis. Characters studied were tassel
date, silk date, plant height, ear height, shank length, husk extension,
tip blanking, number of kernel rows, ear length, and weight of the
first ear.
Diallel crosses were made between seven inbred...
In situ measurements of water vapor and temperature from recent aircraft campaigns have provided evidence that the upper troposphere is frequently supersaturated with respect to ice. The peak relative humidities with respect to ice (RHI) occasionally approached water saturation at temperatures ranging from -40°C to -70°C in each of the...
A study was conducted to characterize the vesicular-arbuscular (VA) mycorrhizal fungi of commercially grown Easter lily. Monthly field soil and root samples were collected from March through September, 1975, from five fields in the coastal area of southern Oregon and northern California. Soil sievings were inoculated onto clover, onion and...
Two replications of a half dial lei cross experiment were performed among four inbred lines of mosquitofish, Gambusia affinis.
These inbred lines originated from three random-bred stocks: OR,
TX and CD. The experiment was conducted as a completely randomized
design. Experimental material consisted of parental lines and F₁ populations maintained...
The control of feral goats (Capra hircus) and relevant aspects of their biology were studied on Aldabra Atoll, Republic of Seychelles, from October 1993 - May 1994 and November 1994 - May 1995. A total of 832 goats were killed on Aldabra using both the Judas goat technique and traditional...
Three genetically different dwarf cultivars of spring wheat were
evaluated as potential sources of short stature to use in a wheat improvement
program. The study involved a five parent diallel cross
which included a semidwarf, a standard height and three dwarf cultivars.
The genetic sources of dwarfism included a Norma...
Enzymic systems able to hydrolyze the compounds forming
the supporting structure of plant tissues have a major effect upon
the texture of fruit products.
The objective of this thesis was the development of a theory
to explain the textural changes in fresh and processed strawberries.
The presence of pectinolytic enzymes...
Striga, a genus of obligate parasitic weeds in the family Orobanchaceae, has been
identified as the most important biological factor limiting agricultural productivity in sub-Saharan Africa. Germination of Striga seeds is triggered by strigolactone root exudates
from host plants. Strigolactones also induce hyphal branching in arbuscular mycorrhizal
(AM) fungi, which...
Published June 1959. 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
Crops were grown at the experimental farms using accepted cultural practices within the limits of experimentation or trials were conducted on growers' field. Most experiments were designed as randomized complete blocks with two to five replications. Herbicide treatments were applied uniformly with equipment ranging from precision plot sprayers to quart...
The influence of vesicular-arbuscular mycorrhizae (VAM) on
populations of general taxonomic and functional groups of naturally-occurring
rhizosphere bacteria and actinomycetes associated with
roots of sweet corn (Zea mays var. rugosa) and subterranean clover
(Trifolium subterraneum L.) was assayed using selective media.
Sporangial production by Phytophthora cinnamomi was also used as...
The general purpose of this study was to investigate the question:
Is unionization disruptive of intra-institutional relationships on community college campuses ?
The introduction of faculty unions into the
college community is often perceived, even by proponents, as a process
which engenders hostility and disruption. Social conflict theory
is the...
Fire, other disturbances, physical setting, weather, and climate shape the structure and function of forests throughout the Western United States. More than 80 years of fire research have shown that physical setting, fuels, and weather combine to determine wildfire intensity (the rate at which it consumes fuel) and severity (the...
Fire, other disturbances, physical setting, weather, and climate shape the structure and function of forests throughout the Western United States. More than 80 years of fire research have shown that physical setting, fuels, and weather combine to determine wildfire intensity (the rate at which it consumes fuel) and severity (the...
Solarization could be an alternative to chemical controls for soil pathogens and weeds, and it may also influence plant growth factors. Biomass, shoot length, and AMF colonization were examined in red oak (Quercus rubra), Mazzard cherry (Prunus avium), and hawthorn (Crataegus monogyna) at J. Frank Schmidt & Son Co. nursery...
Full Text:
NOT sterilization
Temperature kills
140°F for X weeks
Depends on climate, latitude
Diurnal
Studies were conducted on inoculation of container-grown plants
with vesicular-arbuscular (VA) mycorrhizae.
Intraradical vesicles formed in colonized roots were found to
serve as propagules and significantly contribute to the infectivity
of these roots. A procedure was developed for separating
intraradical vesicles from roots; isolated intraradical vesicles were
able to colonize...
A study, consisting of two sequential greenhouse experiments, was
designed to determine the effects of soil liming upon the fungal
partner in a mycorrhizal association. A Willamette Valley foothill
soil, of the Jory series, was limed in increments to achieve a range
of acidity and alkalinity. The P-deficiency and P-fixing...
Soil solarization has been used throughout the world, but its effect on plant growth variables in ornamental tree saplings in the Willamette Valley are not well documented. Solarization could be an alternative to chemical controls for soil pathogens and weeds, and it may also influence plant growth factors. This study...
Full Text:
kills
140°F for X weeks
Depends on climate, latitude
Diurnal fluctuations
Clara Weidman, 2015
In this paper, we consider European and American option pricing problems under regime switching jump diffusion models which are formulated as a system of partial integro-differential equations (PIDEs) with fixed and free boundaries. For free boundary problem arising in pricing American option, we use operator splitting method to deal with...
This investigation was designed to determine the
relationship of student teachers' commitment to the set
of values, attitudes, and behaviors that are characteristically
fostered and rewarded by bureaucratic organizations
and their verbal classroom behavior under actual
teaching conditions,
The purpose of the study was expressed by the
formulation of an...
Symbiotic associations are established between non-leguminous
(actinorrhizal) nitrogen-fixing flowering plants and two categories
of microorganisms: mycorrhizal fungi and a filamentous actinomycete.
The actinomydete induces nodule formation and produces nitrogenase,
the enzyme responsible for the reduction of atmospheric nitrogen to
a form available to higher plants. The mycorrhizal fungus is found...
Negative feedback has become ubiquitous in science both as a
technique and as a conceptual tool. As a technique, negative feedback
has a long history; devices based in its use were made in
antiquity. It has only been during the last century, however, that
rigorous quantitiative methods have become associated...
From 25 April through 30 October 1992, I conducted 14 waterbird and raptor censuses at Cabell Marsh. I observed 33 waterbird taxa and seven raptor species, including hatch-year individuals of five waterbird species. The records for each census are given.
Published October 1961. 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
Four isolates of Glomus mosseae, collected from diverse
geographic locations, were pot cultured on varied host plants or
stored in the same soil as collected. Spores of three isolates failed
to germinate on any of five agar media while the fourth germinated
well on all media. Lack of germination on...
The colonization of several species of plants by vesicularar-buscular
mycorrhizae (VAM) was studied to determine how host, soil,
or symbiont factors interacted to enhance growth of the host plant.
Seedlings of two species of the Cuppressaceae and two of the
Taxodiaceae formed VAM; colonization significantly improved growth.
This response to...
Eight male college students served as subjects in an investigation
to establish a procedural model for research of individual motor
units during sustained isometric contractions. Teca TE-4 electromyograph
system with needle electrode provided electrical potential
recordings from active muscle fibers in the right biceps. Various
experimental procedures were tested to...
The lack of information regarding the inheritance of the duration and rate of
grain filling, and the possible relationship between grain fill and grain protein
content in wheat prompted this study.
Early maturing Chinese cultivars, 'AI Feng 2' and 'CB 83-52', and late
maturing cultivars adapted to Oregon, 'Stephens' and...
Although chemical fungicides are commonly used to control fungal soil-borne
diseases of Easter lilies, Lilium longiflorum Thunb., in field production and
greenhouse forcing, cultural and biological controls may be alternatives or
complementary to chemicals for control of pathogens.
The influence of inoculations with beneficial, symbiotic, and biocontrol
microorganisms to enhance...
The purpose of this ethnographic study was to explore White, female teachers’ attitudes and perspectives towards their African American students, the Black/White Achievement Gap, and their teaching practice in regards to their students’ achievement, through the use of focus group discussions. The target group for this study was White, female...
In March and April of 2003, over 250 managers, researchers, and other participants gathered for a series of workshops at Oregon State University, the University of Arizona, and Colorado State University, near the largest wildfires of 2002. In response to the need for better understanding of large fires, the Wildland...
In March and April of 2003, over 250 managers, researchers, and other participants gathered
for a series of workshops at Oregon State University, the University of Arizona, and
Colorado State University, near the largest wildfires of 2002. In response to the need for
better understanding of large fires, the Wildland...
Published October 1967. 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
Interdisciplinary research has been proposed and increasingly practiced as a way to transcend the limitations of our individual disciplines, which compartmentalize and limit the production of knowledge in multiple ways. While the compartmentalized knowledge that we know as modern science has provided many breakthroughs in understanding the world, it does...
The preceding empirical research examines the traditional and evolutionary research surrounding youth deviance. Deviance is routinely discussed as an adverse impact in a plethora of theories and it is imperative to further develop the knowledge of deviance as society progresses. In this report, the utilized sample group approximately (n=13583) was...
The food habits of the 2 dominant larval pleuronectids off the Oregon coast - English sole Parophrys vetulus and butter sole Isopsetta isolepis - were analysed. Most specimens were collected during January-April 1971 and March-April 1973. As is typical of larval fishes, I. isolepis larvae ingested a variety of prey...
Soil solarization has been used throughout the world, but its effect on plant growth variables in ornamental tree saplings in the Willamette Valley are not well documented. Solarization could be an alternative to chemical controls for soil pathogens and weeds, and it may also influence plant growth factors. This study...
Full Text:
modified
staining protocol with trypan blue (Phillips and Hayman, 1970). The modification was
only a
Solarization could be an alternative to chemical controls for soil pathogens and weeds, and it may also influence plant growth factors. Biomass, shoot length, and AMF colonization were examined in red oak (Quercus rubra), Mazzard cherry (Prunus avium), and hawthorn (Crataegus monogyna) at J. Frank Schmidt & Son Co. nursery...
Full Text:
protocol with trypan blue (Phillips and Hayman, 1970). The modification was
only a substitution
The valuation of the opportunity to either invest or exploit a fishery is particularly difficult because of the high uncertainty concerning the resource price. The traditional net-present-value (NPV) and other discounted-cash-flows (DCF) methods cannot properly capture the management's flexibility and strategic value aspects of a fishery, thus they may understate...
The Ti plasmid in Agrobacterium tumefaciens strain 15955 carries two alleles of traR that regulate conjugative transfer. The first
is a functional allele, called traR, that is transcriptionally induced by the opine octopine. The second, trlR, is a nonfunctional,
dominant-negative mutant located in an operon that is inducible by the...
Full Text:
Hayman and Farrand (46) was used to assess sensitivity to agrocin 84.
Briefly, two colonies of the
The influence of mycorrhizae on the nutrient uptake of
strawberries and red raspberries was investigated. On red raspberries
innoculation with a mycorrhizal fungus resulted in increased P uptake
and a greater concentration of P in the shoots of the plants. The
strawberries were innoculated with 2 species of mycorrhizal fungus....
QCritic is a rule-based critic for analog bipolar circuits. It functions as a post-processor for the SPICE simulator, making use of netlist, current, and voltage data. The program was written in OPS83, and demonstrates good run-time performance on a VAX 11/780. At present, the system contains rules for analyzing circuits...
In this paper I examine the impact of recent immigration, in addition to other community predictors on community counts of violent and property crimes in Austin, Texas, a multi-ethnic city. I combine data from the 2000 US census of population and housing with census tract level uniform crime report data...
Oregon English sole catch data from 0 to 80 fathoms between Coos
Bay and Cape Lookout were examined for the years 1973, 1975, and 1976.
English sole is a major target species of this inshore trawl fishery.
Comparison of depths of maximal values of catch per unit effort, effort,
and...
We find that increases in implied market volatility (a proxy for market fear) have a significant impact on returns of bank stocks, above and beyond systematic risk proxied by the expected excess market return during a bad economic regime. Large bank returns are favorably affected by increases in implied market...
Neogene rocks of the Deschutes basin include the middle Miocene
Columbia River Basalt Group and Simtustus Formation, and late Miocene
to early Pliocene Deschutes Formation. Assignment of Prineville
chemical-type flows to the Grande Ronde Basalt of the Columbia River
Basalt Group is based upon correlation of these lavas from their...
Full Text:
, Tom Dill, Glenn
Hayman, Britt Hill, Scott Hughes, Jere Jay, Angela McDannel, Dave
Thormahlen, and Gene
Since the 1930's, many fields on the Crooked River National grasslands have been seeded to crested wheatgrass (Agropyron desertorum). While some of these fields remain dominated by crested wheatgrass others had a greater presence of deep rooted native perennial grasses such as bluebunch wheatgrass (Pseudoroegneria spicata). Twenty eight fields previously...
These three papers address uncertainty in the management and valuation of renewable natural resources. The first paper develops a model to integrate both stock and price uncertainty to obtain optimal resource levels. The model is an extension of Reed (1974) and shows by proof and by example that when prices...
Published January 1967. 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
Studies of avian movement ecology afford essential insights regarding species' life histories, population dynamics, habitat and resource requirements, and other ecological relationships. While it is widely recognized that events in different stages of the annual cycle have important implications for processes in avian ecology, evolution, and conservation, challenges associated with...
This research studies the cyclical behavior of agricultural farmland prices in the
United States with a special emphasis on how agricultural policies contribute to
farmland price movement.
The first stage of the study is to have a conceptual understanding of how
agricultural policies affect the behavior of farmland prices. A...
This study examines the interactions between the scientific communities of the
Lawrence Berkeley Laboratory (LBL) and the Stanford Linear Accelerator Center
(SLAC) in the discovery of the tau lepton by physicist Martin Perl between 1973-
1977. Perl became interested in searching for heavy leptons through positron-electron
collision experiments using the...
Published May 1957. 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
Sheep live weights, herbage standing crop, and herbage quality
are presented from a three-year grazing management study comparing
set stocking, four-paddock rotational grazing, and four-paddock
forward rotational grazing systems. In both rotational grazing and
forward rotational grazing systems, sheep were sequentially moved
from one paddock to the next every 5...
Muscle weakness and fatigue are debilitating symptoms of multiple sclerosis (MS). Approximately 50% of muscle weakness and fatigue have been attributed to deficits within the peripheral nervous system, specifically mechanisms residing in the muscle. The goals of this study were to identify the cellular mechanisms of contraction within the muscle...
Shorebirds display great variation in mating systems and breed in dynamic environments that are increasingly subject to human threats worldwide. In order to adequately assess productivity and demography of shorebird populations, it is important to understand factors that influence patterns of parental care and reproductive success. The Black Oystercatcher (Haematopus...
Experiments were conducted to determine if allelopathy is a mechanism
by which buckwheat interferes with a) the growth of Canada thistle and/or b)
mycorrhizae colonization in Canada thistle roots. In a competition experiment,
buckwheat plant biomass was only affected by the intraspecific competition
from other buckwheat plants and not by...
This paper discusses the use of options as a tool to retrieve valuable information on the value and level of risk associated with owning a share in a stock of renewable resource. The objective is to show how theory on options trading can be used to obtain information on the...