The authors varied the number of red alder retained with 300 Douglas-fir per acre on a high-quality site in coastal Oregon. Alder densities of 0, 20, 40, and 80 per acre were tested. The authors' fifth treatment eliminated nitrogen-fixing alder, but substantial nitrogen fertilizer. Treatment 6 had neither thinning nor...
Horticultural and nursery crops are the leading agricultural commodity in Oregon. Among currently grown nursery plants, Verbena x hybrida is a staple ornamental. It is grown and shipped worldwide, thus requiring a high level of certainty concerning the plants’ health and potential viability. V. x hybrida cultivars have been infected...
Full Text:
. Obermeyer
May 21, 2004
All Rights Reserved
AN ABSTRACT OF THE THESIS OF
Angela L. Obermeyer for the
Horticultural and nursery crops are the leading agricultural commodity in Oregon. Among currently grown nursery plants, Verbena x hybrida is a staple ornamental. It is grown and shipped worldwide, thus requiring a high level of certainty concerning the plants’ health and potential viability. V. x hybrida cultivars have been infected...
Horticultural and nursery crops are the leading agricultural commodity in Oregon. Among currently grown nursery plants, Verbena x hybrida is a staple ornamental. It is grown and shipped worldwide, thus requiring a high level of certainty concerning the plants’ health and potential viability. V. x hybrida cultivars have been infected...
Monstrous beings, or distortions of nature, were a tangible object of fear in the medieval and early modern eras. Aristotle, as a precursor to the scientists and magical practitioners of the twelfth century or the barber-surgeons of the sixteenth century, understood monsters to be human or animal beings deformed by...
My thesis is comprised of two articles, titled "Interpreting Britomart's Encounters with Art: The Cyclic Nature of Ekphrasis in Spenser's Faerie Queene III," and "Picture This, Imagine That: Teaching Visual Literacy in the Disciplines." The purpose of my first article is to argue that Edmund Spenser uses ekphrasis in his...
In this study a method has been demonstrated by which
the departure from nucleate boiling ratio (DNBR) can be
readily determined for nuclear transients through application
of the COBRA-IIIC/MIT computer code. For input,
boundary conditions were specified relating the time-dependent
variations of core inlet coolant temperature,
system pressure, core heat...
Acoustic scattering layers of biological origin have been observed for nearly 70 years across the world’s oceans. The organisms that comprise these layers are known to be important features in most oceanic ecosystems, providing a vital trophic link between small phytoplankton grazers and larger species. There are many aspects of...
Achlys triphylla, a member of a medicinally active family
containing alkaloids, was examined phytochemically to determine its
possible value as a source of medicinal agents.
Pharmacological testing of the crude ethanol extract exhibited
a competitive inhibition of acetylcholine and histamine. Purification
of alkaloid 'A' from the crude ethanol extract and...
A conceptual model of the tidal flat system, emphasizing the
sulfur cycle was presented. Measurements were made of the vertical
distribution within tidal flat deposits of total aerobic and sulfate
reducing bacteria, total sulfides, redox potential, volatile solids,
and particle size. Variations in dissolved oxygen and free sulfides
in the...
Carnitine, acetylcarnitine, and long-chain acylcarnitine concentrations
were determined for heart, brain, and liver of chick
embryos during various stages of development. The total carnitine
concentration was approximately the same in all three organs and
showed only small variations during development. Acetylcarnitine
was not detected in any organ until the seventeenth...
There are essentially no publications dealing with the skin toxin
of Taricha granulosa. This study has undertaken investigations with
this toxin in an attempt to determine its potency and its effect on the
newt's potential predators.
Test solutions were made by macerating a known volume of newt
skin in a...
The western Plethodon include vandykei vandykei, v. idahoensis,
larselli, dunni,vehiculum, stormi, elongatus, and an undescribed
form referred to as the "unstriped" Plethodon. These
salamanders have been placed into three species groups: the
Vandykei group, the Vehiculum group, and the Elongatus group.
Range maps are provided and geographic variation is discussed...
L. C. Dunn (1893-1974) spent most of his scientific career conducting research in
developmental genetics as a member of the Zoology Department at Columbia
University in the City of New York. He had an accomplished scientific career
researching mutations in mice, which earned him respect from other geneticists and
scientists....
Wideband tunnel-diode amplifiers using common-base
transistor stages for isolation were investigated for
stability criteria, frequency response, and the effects
of temperature and voltage supply fluctuations. For the
first time the full frequency spectrum of a tunnel-diode,
from d-c to the gigahertz (GHz) range, was able to be
utilized in an...
This case study of the Spokane Valley-Rathdrum Prairie aquifer, deals with the evolution of water quality protection. A number of institutional efforts on multijurisdictional levels
have established a piecemeal approach for this aquifer's protection. Federal legislation includes designation as a 'Sole Source' aquifer under sec. 1424(e) of SDWA, and 1...
This report is one of a series issued in cooperation with the ANC-23 Panel on Composite Construction for Flight Vehicles of the Departments of the Air Force, Navy, and Commerce
This report is one of a series issued in cooperation with the ANC-17 Panel on Plastics for Flight Vehicles of the Departments of the Air Force, Navy, and Commerce.
This report is one of a series issued in cooperation with the ANC-17 Panel on Plastics for Flight Vehicles of the Departments of the Air Force, Navy, and Commerce.
This report is one of a series issued in cooperation with the ANC-17 Panel on Plastics for Flight Vehicles of the Departments of the Air Force, Navy, and Commerce.
This report is one of a series issued in cooperation with the ANC-17 Panel on Plastics for Flight Vehicles of the Departments of the Air Force, Navy, and Commerce.
This report presents the results of tests made to determine the effect of different types of configurations and notches on the tensile strength and fatigue strength of a typical epoxy laminate. Tension tests were first made of 13 groups of specimens having different forms. Based on the results of the...
This pocket guide highlights fire-resistant plants that thrive in Willamette Valley growing conditions. It recommends groundcovers, perennials, shrubs, woody vines, and trees. There are too many annual plants available to list them all. In general, annuals are considered fire-resistant if they are kept well irrigated.
Published September 1924. 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
In February 1905 the Oregon State Academy of Sciences formed in
Portland to promote scientific research and diffusion of scientific
knowledge in Oregon. The founders also planned to assist in the
discovery and development of the state's natural resources. The
Academy was the first scientific society in Oregon with professional...
Fires affect animals mainly through effects on their habitat. Fires often cause short-term increases in wildlife foods that contribute to increases in populations of some animals. These increases are moderated by the animals’ ability to thrive in the altered, often simplified, structure of the postfire environment. The extent of fire...
In this project, I explore the use of monomania as a literary and rhetorical device that pathologizes deviance from certain norms—in this case, sexual and political norms— and allows for contradiction, dissonance, and reform. Using Nathaniel Hawthorne’s short story “The Birthmark” and Edmund Clarence Stedman’s poem “How Old Brown Took...
The results of 703 observations are given; most of these were made in the 1930's by James Macnab, Jane Claire Dirks-Edmunds, Dorothy McKey-Fender, and others. These results are the most comprehensive throughout the year for any site above 1,000 ft in Lincoln County and hint that bird communities at sites...
A key problem faced by managers is how to allocate scarce resources
among activities or projects. Linear programming, or LP, is a method of
allocating resources in an optimal way. It is one of the most widely used operations research (OR) tools. It has been used successfully as a decision...
A key problem faced by managers is how to allocate scarce resources
among activities or projects. Linear programming, or LP, is a method of
allocating resources in an optimal way. It is one of the most widely used operations research (OR) tools. It has been used successfully as a decisionmaking...
According to the Operations Research Society of America, “Operations
research is concerned with scientifically deciding how to best design and
operate man-machine systems, usually under conditions requiring the allocation of scarce resources.” This publication is the first in a series describing operations research (OR) techniques that can help forest products...
Published September 1995. Reviewed August 2016. 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 objective of this series is to help improve the competitiveness of
Oregon’s wood products manufacturers. This can be achieved by fostering a companywide focus on and dedication to continuous quality improvement.
W. Edwards Deming (1982) described the “chain reaction of quality.”
1. Quality is improved.
2. Costs decrease due...
With increasing computing power, it is possible to process more complex fluid simulations. However, a gap between increasing
data size and our ability to visualize them still remains. Despite the great amount of progress that has been made in the field of
flow visualization over the last two decades, a...
Part 1 in this series introduced the reader to Statistical Process Control, and Part 2 provided an overview of how and why SPC works.
Part 3 begins the step-by-step process of building the practical skills
necessary for hands-on implementation of SPC. This report discusses Pareto analysis, a tool we can...
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Part 1 in this series introduced the reader to Statistical Process Control, and Part 2 provided an overview of how and why SPC works.
Part 3 begins the step-by-step process of building the practical skills
necessary for hands-on implementation of SPC. This report discusses Pareto analysis, a tool we can...
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Published February 1922. 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
Published May 1922. 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
Publication examines the wide variety of insect pests, diseases and environmental conditions that can affect Sitka Spruce along the coastline of Oregon.
This publication introduces the reader to a process called lean manufacturing, sometimes called the Toyota Production System. The intended audience is manufacturers of forest products, although manufacturers of other types of products will also find this publication useful.
A key problem managers face is how to allocate scarce
resources among various activities or projects. Linear
programming, or LP, is a method of allocating resources
in an optimal way. It is one of the most widely used operations
research tools and has been a decision making aid in almost...
The goal for Part 2 is to build management understanding and
confidence in SPC as a profit-making tool. It is unreasonable to expect
managers to commit to and support SPC training and implementation
if they do not understand what SPC is and how and why it works. This
publication discusses...
Published March 1943. 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
Published May 1924. 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
Published April 1917. 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
Procedures outlined in this publication show how to estimate standing volume and annual growth of individual timber stands that are relatively uniform in species, age, size, and density. Estimates of volume and growth are helpful in planning when to harvest or how much to remove in a thinning operation. These...
Tarif numbers are essential for calculating the volume of standing timber on forest land. This publication includes comprehensive tarif numbers for six species of Oregon timber--Douglas-fir, grand fir, ponderosa pine, red alder, western hemlock, and western redcedar--and the corresponding tree volumes.
Published November 1936. 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
Published December 1932. 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 efficiencies of wet sieving/sucrose
centrifugation (WS/SC) recovery of Pratylenchus penetrans
(59 %), Paratylenchus sp., (80 %), and Criconemella
xenoplax (66 %) were established. Baermann funnels (BF)
recovered significantly more P. penetrans (p = 0.01) and
significantly less (p = 0.01) C. xenoplax than did WS/SC.
While densities of P....
Currently there is a lack of documentation on the
types of teaching methods being used to teach elementary
mathematics in Saudi Arabia, To help meet this need, this
research project studied the verbal behavior of Saudi
Arabian elementary mathematics teachers. A two-fold
problem was addressed.
1. To obtain a description...
This investigation attempts to demonstrate that the development
of the early 20th century biological enterprise involved a striving for a
unifying theoretical perspective. A skeletal substantiation of this is
given by an overview of early 20th century biology in which some
biologists began recognizing a multiplicity of different orders of...
Representative sites of the Dayton, Woodburn, Jory, Quillayute, Astoria, Willamette, Walla Walla, Deschutes, Laki and Owyhee soil series were investigated for seasonal changes in exchangeable potassium in air dry samples. No consistent seasonal variations were found which could be attributed to wetting and drying in the field. Cropping reduced the...
Modern science was produced by a Christian society,
and although science has had an effect on Christianity, it
could not itself remain unaffected. In the second half of
the nineteenth century, the subject of evolution was as
much a religious as a scientific issue. The battle line
was drawn and...
The purpose of the study was to develop a resource guide
1. to introduce high school students to ways in which
intellectual development can be taught in early childhood
education programs.
2. to give early childhood educators additional ways of
teaching intellectual concepts to preschool children.
To achieve this purpose,...
In 1959 the British Ornithological journal, The Ibis, published a centenary commemorative volume on the history of ornithology in Britain. Over the previous few decades, the contributors to this volume had helped focus the attention of ornithologists on the methods, priorities, and problems of modem biology, specifically the theory ofevolution...
In this thesis a method is presented for maintaining the left
ventricular wall stress of the human heart at a constant level during
the systole (active portion of the heart's cycle). This constant stress
level makes it possible to take isotonic measurements on the heart
muscles.
The left ventricle of...
The data gathered for the study of the health status of freshmen
at Oregon State University were derived by an analysis of health history
records. These were obtained from the Oregon State University
Health Service. The years sampled were 1930, 1940, 1950 and 1960;
300 freshman male and 300 freshman...
The purpose of this study was to identify some of the factors associated with student usage of the Student Health Services (SHS)
and of the Infirmary at Oregon State University. The population for the study was the freshman class entering Oregon State University in September, 1968. The original enrollment of...
The purpose of the study was to develop a proposed in-service program for cooperating teachers who supervise student teachers. Forty-one cooperating teachers for the Home Economics Education Department of Oregon State University rated the competencies of a good supervisor of student teachers. Also, 17 heads of home economics teacher education...
An examination of the technical and historical literature
concerning the discovery and development of antibiotics suggests the
possible existence of an era of discovery. This era appears to have
a well-defined beginning (about 1940) and a well-defined close (about
1960). It is the purpose of this dissertation to examine the...
The study was conducted to identify variables, from
among the theory related and demographic/biographic variables
included in the study, which were able to discriminate
between groups of male and groups of female freshmen
who differed in their level of self-actualization.
Five hundred and forty freshmen (277 males and 263
females)...
The Purpose of the Study: The purpose of this study was to develop a profile of the professional improvement needs of occupational instructors in Oregon community colleges as perceived by selected instructors. Specific objectives included: (I) to determine on a 5-point rating scale how proficient occupational instructors feel they should...
The purposes of this study were to determine whether the generally accepted procedure of campus elections as a method of choosing student government representatives (1) appears to encourage the candidacy of students who hold perceptions of the university environment similar to other students who do not choose to become candidates;...
There is significant interest in the fabrication of nano- and micro-structured silica with spatially ordered features, which exhibit enhanced optoelectronic properties with application to the next generation of display devices, semiconductors, and sensors. Currents methods of fabrication employ top down processes which use extremes of temperature, pressure, and power. There...
A study was made of the subgenus Genuini of the genus Juncus in the Pacific States, California, Oregon and Washington. Extensive morphological comparisons, geographical distributions, habitat differences and observations of apparent presence or absence of natural hybrids provided the major data sources. Cytological studies were made, but were inconclusive. Eleven...
Nature of the Phenomenon
The primary purpose of this investigation was to determine if the
predisposition of counselor candidates on selected factors found to be
associated with effective counseling, upon entering a counselor education
program, was predictive of effective counselors at the end of that
program.
Hypotheses
Two central hypotheses...
By 1900 domestication was a promising, if somewhat vexed, subject in biology. Volumes had been written about domestication, but little serious scientific inquiry was directed toward the phenomenon. Expertise lay with practical men, primarily breeders and fanciers. The bulk of scientific commentary on domestication came from anthropologists who derived theories...