Inkjet printing offers a cost effective, highly customizable method for rapid manufacturing of functional devices with minimal material waste. Although this method has been used for a variety of composites, little work has been done in the area of 3D printing magnetic composites. Presented here is a process for inkjet...
Illite, chlorite, montmorillonite and kaolinite, as well as
natural marine sediments and mixtures of the standards were subjected
to density separation by centrifugation in a linear heavy-liquid
gradient.
The density layers yielded by centrifugation were recovered
and analyzed by X-ray diffraction. Separates were not monomineralic
but rather were polymineralic usually...
Five varieties of industrial hemp (Cannabis sativa) were grown in the field in Imperial Valley, CA, USA in order to determine whether light conditions or harvest times influence cannabinoid content. A total of 16 cannabinoids were investigated in this study: Delta-9-tetrahydrocannibinol (THC-d9), Delta-9-tetrahydrocannibinolic acid (THC-a), Cannabidiol (CBD), Cannabidiolic acid (CBD-a),...
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Amy Garrett, Committee Member, representing the Department of Horticulture
Purebred Jersey steers are often overlooked for beef production due to the perceived poor growth and production. Currently dairy persons marketing their steer offspring are receiving minimal compensation due to lack of demand by beef feeders and a saturated veal market. Twenty purebred Jersey steers were used to evaluate lifetime...
The Sellwood Multi-Modal Center (SMMC) will complement the Sellwood Bridge Replacement Project located in Portland, Oregon. Multnomah County, the client, and David Evans & Associates, the consultant, have identified five possible sites for the Sellwood Multi-Modal Center. The following report describes the analysis and selection of site alternatives for the...
Beer brewing, broadly speaking, consists of two stages, a hot side and a cold side. The hot side occurs in the brewhouse and consists of steeping malted grain in hot water to extract sugars, separating the steeping liquid (wort) from the solids, and boiling the wort with an addition of...
Heats of immersion were obtained for four different organophilic
clay complexes in a series of normal alcohol-heptane mixtures
with alcohols of increasing chain length. The immersion calorimeter
employed was the Dewar type with a sensitivity of approximately
5 x 10⁻⁵°C.
Gel volumes were determined for two of the clay complexes...
We examine the 0–100 Ma paleoceanographic record retained in pelagic clay from the South Pacific Gyre (SPG) by analyzing 47 major, trace, and rare earth elements in bulk sediment in 206 samples from seven sites drilled during Integrated Ocean Drilling Program Expedition 329. We use multivariate statistical analyses (Q-mode factor analysis...
This thesis explores the potential applications for 3rd generation activity theory in writing studio spaces, using the Undergrad Research and Writing Studio at Oregon State University as a focal point. David R. Russell, Nedra Reynolds, and Deborah Brandt have all investigated systemic and communal elements in student writing processes, while...
This study examined the foraminifera and the ecologic conditions
of the benthic environment of the Oregon shelf and the uppermost slope
(75-550 m depth) between 143°45' N and 144°40' N. Seasonal collections
monitored the near-bottom marine environment and the sedimentary
substrate at 16 stations. The foraminiferal benthic fauna was
examined...
Take-all root rot (Gaeumannomvces araminis var.tritici) is
a major disease of wheat (Triticum aestivum) in western Oregon.
Control of take-all is dependent on management practices such as crop
rotation and soil fertility-plant nutrition relationships. The
objective of this study was to develop a bioassay that could measure
the influences of...
The effects of pH and time on the formation of hydroxy-Al, Fe,
and Mg interlayer were compared for montmorillonite and vermiculite.
The stability of interlayers was evaluated by sequentially increasing
the severity of dissolution treatments and by subjecting the inter-layers to an HC1 treatment. The interlayer formation and stability
were...
The present thesis chemically examined 174 industrial North Staffordshire pottery fragments from an archaeological context, using Instrumental Neutron Activation Analysis (INAA). In an integrated effort to combine an archaeometric approach with archival research and traditional analysis methods, the purpose of the thesis was to link industrial pottery manufacturers recipes to...
The Willamette Mission archeological project
consists of a broad program of cultural research in the
fields of archeology, history, and architecture. The
study focuses on the first Methodist mission in the
Pacific Northwest. Archeological excavations were
conducted in 1980 to locate the site of the mission, to
assess the site's...
Published March 1962. 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 Willamette Mission archeological project
consists of a broad program of cultural research in the
fields of archeology, history, and architecture. The
study focuses on the first Methodist mission in the
Pacific Northwest. Archeological excavations were
conducted in 1980 to locate the site of the mission, to
assess the site's...
In 1986, researchers from Oregon State University, led by Dr. David Brauner, came to the small Catholic community of St. Paul, Oregon as part of ongoing research on the French-Canadian inhabitants of the Willamette Valley between 1829 and the mid-1860s. They were searching for the remains of the first Catholic...
This thesis is based on the excavations of the Robert Newell farmstead (35MA41), excavated in 2002 and 2003 by the Oregon State University Department of Anthropology archaeological field school. Robert Newell lived at this farm from 1843- 1854. Major architectural features, including a brick hearth and postholes were discovered at...
Thermal cracking of asphalt concrete pavements is responsible for millions
of dollars in annual maintenance and rehabilitation costs in the United States and
Canada. Thermal cracking is typically associated with low temperatures in
northern climates and at high elevations. However, another form of thermal
cracking, known as thermal fatigue cracking,...
Chloride containing fertilizers are used to reduce the severity of take-all root rot of wheat in western Oregon and appear to reduce nitrification in moderately acid soils. Objectives of this study were to determine if nitrification is inhibited by the Cl ion, increasing soil solution ionic strength, or changes in...
The Newell Farmstead (35MA41) archaeological site lies in the heart of the French Prairie in the Willamette Valley in the Champoeg State Heritage Area, Oregon. The integrity and depth of deposition have made the Newell site a unique opportunity to look at activity areas and domestic life of early Euro-American...
St. Joseph's College was located within St. Paul, Oregon, the first Roman Catholic mission in the Pacific Northwest. The St. Paul mission was finally established in 1839 by Father Francois Blanchet, four years after the French-Canadian settlers in the area, appropriately known as French Prairie, had requested the presence of...
Three Oregon soil types (Chehalis silt loam (CSL), an alluvial
soil from the Willamette Valley; Ayre sandy loam (ASL), a volcanic
pumice soil from the Central high desert; and Klamath fine sandy
loam (KFSL), a basaltic mineral soil from the Klamath Basin) were
collected adjacent to fields which had been...
Commercial fishing research often focuses on ecological (gear, stock assessment, traceability) or economic factors. Truly understanding the social-ecological system requires considering the entire "human dimension" and this includes the social, cultural, and legal/policy aspects as well. An understudied yet important factor is women's contribution to fishing at the family and...
Sustainable management of planted forests requires maintenance of soil function
to promote 1) root growth; 2) storage and cycling of water and nutrients; 3) optimal gas
exchange; and 4) biological activity. Soil quality measurements can be used to monitor
short- and long-term changes in these soil functions, allowing managers to...
Published 1912. 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 wetland sites were identified and delineated in Silver Falls State Park, Oregon using procedures outlined in the 1989 Federal Manual for the Identification and Delineation of Jurisdictional Wetlands and subsequently monitored for a ten month period. A network of 225 shallow (32") wells was installed throughout the sites to...
Pile supported bridges are typically constructed near or in a natural or man-made
slope and are subjected to lateral loading. The current design method for laterally loaded
piles involves the use of Winkler's spring concept with the standard nonlinear p-y curves.
The available p-y curves were developed based on results...
This thesis will explore the architectural material culture excavated at the Robert Newell Homestead (35MA41), currently located in Champoeg, Oregon. Specifically, the research focuses on the vernacular architecture or the features and construction methods used that both reflect the environment and the cultural traditions of the dwellings occupants. The Robert...
The sagebrush steppe ecosystem of the Columbia Plateau has become degraded by a long history of alternative land use and associated perturbations. Protection of remnant stands of intact sagebrush steppe currently relies upon their preservation within the nation's network of parks and protected-areas. The John Day Fossil Beds National Monument,...
This study is an archeological testing report for the Willamette
Mission Hospital Site. Landform analysis, photointerpretation and historical
research were integrated with anthropological theory for this
study.
The site is an invaluable data base to further the study of human
adaptability and cultural change. It should provide an excellent context...
Here we investigate sedimentary records from four small inland lakes located in the southern Cascadia forearc region for evidence of earthquakes. Three of these lakes are in the Klamath Mountains near the Oregon–California border, and one is in the central Oregon Coast range. The sedimentary sequences recovered from these lakes...
1. Freshwater mussels (Order: Unionidae) are among the most imperiled aquatic organisms in North America. Conservationists and resource managers within the United States are increasingly advocating restoration of these animals to preserve biodiversity and boost ecosystem services in the nation’s waterways. 2. Historically, restoration methods have yielded less than optimal...
Champoeg, located along the Willamette River, developed
as a transportation center for both river and overland
travel and as a shipping point for agricultural products.
Retired employees of the Hudson's Bay Company were the first
to settle in the area, in the 1830s. American settlers
began arriving in large numbers...
Agrivoltaic systems combine solar energy and agriculture, promoting dual land use. Although grazing sheep in these systems is common, research on intentionally designed pastures to increase production is lacking. This study seeks to compare the herbage growth and lamb production in simple, diverse, and legume pastures in an agrivoltaic system...
Multivariate statistical treatments of large data sets in sedimentary geochemical and other fields are
rapidly becoming more popular as analytical and computational capabilities expand. Because
geochemical data sets present a unique set of conditions (e.g., the closed array), application of generic
off-the-shelf applications is not straightforward and can yield misleading...
Full Text:
. G. Garrett (2002), Factor
analysis applied to regional geochemical data: Problems and
possibilities
This study explores how multispecies social networks influence small farmers' perceptions of and responses to climate change across Oregon. Local food sovereignty and food system resilience depend on a robust local food system in which small farms play a critical role. To maintain their viability, small farmers must adapt to...
This study utilizes a multidisciplinary research approach integrating the sciences of archaeology, geology, pedology and paleoclimatology. Deeply stratified and radiocarbon dated sedimentary sequences spanning the last 10,000 yr B.P. are reported for the Cremer site (24SW264), south-central Montana. Previous investigations at the site revealed an archaeological assemblage with Early Plains...
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anticlinal trend, and on the northeast by the Huntley-Lake
Basin Fault Zone (Garrett 1972: 113). Smith
Root rot due to Armillariella mellea (Vahl. ex Fr.)
Karst. is unusually severe in ponderosa pine near Glenwood,
Washington. Isolate relations, clonal variability, vegetation
patterns, and climate were examined in relation to
severity of disease in this area.
Ninety-one isolates from 70 infection centers were
examined. Pairings of neighboring isolates...
The species composition of soil microfungal populations in-adjacent
stands of red alder, conifers, and mixed alder conifer correlated
strongly with the dominant vascular vegetation. A total of 92
species were isolated: 55 from the alder stand; 45 from the conifers;
and 46 from the mixed alder-conifer, with few species (16,...
This study investigates the use of predictive mapping techniques as well as geotechnical criteria in developing a multiregional soil liquefaction model and subsequent maps. The maps were produced using National Cooperative Soil Survey data, in the gSSURGO format, combined with soil liquefaction data gathered from studies, articles, and traditional seismic...
The incitant of Verticillium wilt of peppermint (Verticillium
dahliae Kleb.) causes disease symptoms only in the genera Mentha
(the mints) and Monarda. This fungus is unable to grow saprophytically
through natural soil. V. dahliae survives in soil by colonizing
and forming microsclerotia in susceptible plants, living root tissue
of many...
To obtain data on the decomposition of the forest floor, a battery operated electrolytic respirometer was developed making it possible to measure CO₂ evolution from field moist forest floor samples in situ independent of root respiration. Banks of four respirometers powered by two 12-volt batteries were installed in three old...
Annual applications of fresh or composted dairy manure were assessed for their effects on root rots of sweet corn and snap bean and damping-off of cucumber in a field soil. Soil biological and physical properties were measured as possible indicators of root rot suppressive potential. Regardless of amendment type or...
Ellis, a booming mid-sized town in California's Central Valley, is packed with farmers and commuters, and plagued with a dwindling sense of itself and its history. Set against the backdrop of a failed murder-suicide, a secret affair and a wealthy local mogul's attempt to develop the town into something it's...
This thesis examines archaeological material in order to explore gender and ethnicity issues concerning fur trade era families from a settlement in the Willamette Valley, Oregon. Ethnohistorical information consisting of traders journals and travelers observations, as well as documentation from the Hudson's Bay Company, Catholic church records, and genealogical information...
Detailed current profiles between the sediment-water interface
and 20 cm above it reveal a viscous sublayer in the bottom boundary
layer on the Oregon continental shelf. Data from three field experiments
are used to test fundamental assumptions about boundary layer
flow in the ocean. The first study, discussed in Chapter...
The mechanism(s) involved with intrauterine migration of the porcine embryo was investigated. Twenty-four gilts on Days 6, 9 and 12 of gestation (Day 0 = 1st day of estrus) were utilized to examine the relationship between myometrial activity and intrauterine migration. On Day 2, embryos were flushed from one oviduct...
Includes 1922 Summer School Graduates.
In the following pages the information, so far as it has been possible to obtain it, is given in the following order for each alumnus: Name, year in which the degree was conferred, degree, course, present occupation, and present mailing address.
Nurseries are an important part of the agriculture industry of the United States. The nursery industry provides ornamental, forest, restoration and specialty products to many markets in N. America. The disease sudden oak death, caused by Phytophthora ramorum, has devastating environmental and economic impacts on forested land, the urban-forest interface,...
The United States has enormous deposits of oil shale which, if developed, could provide energy resources for centuries. Because of the vast size of these deposits, they are currently receiving a great deal of attention. This issue of The ORE BIN is devoted to a discussion of oil shale --...
Abstract: A series of 23 thin, mostly mud-silt turbidites are found interspersed between larger, well-dated and regionally correlated paleoseismic sandy turbidites that extend along most of the Cascadia margin, northwestern United States. Investigation of the structure, distribution, and sedimentology of these thin mud-silt units supports the interpretation of these units...
The Champoeg townsite first developed due to its ideal settlement and trade location within the Willamette Valley, becoming the ‘legal birthplace of Oregon’ in 1843. However, by 1860 Champoeg’s significance had begun to decline, and in December of 1861 a devastating flood wiped out the townsite. Archaeological excavations took place...
This report summarizes the outcomes of a March 22-25, 2010, workshop in Seattle, Washington, on the environmental effects of tidal energy development. The workshop focused on building capabilities to evaluate the environmental effects of tidal energy from turbines placed in the water column throughout the United States. However, it did...
Agrivoltaic systems promote dual use of land by combining solar energy and agricultural production. Grazing sheep in these systems is popular but research on intentionally designed pastures to increase production is lacking. This study seeks to compare the herbage growth and lamb production in simple, diverse, and legume pasture mixes...
Published January 1980. 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
Recent research in the UK has found that the wheat cultivar grown in the first year can have a significant impact on the amount of take-all that develops in the second year, regardless of the cultivar planted in year two. ‘Einstein’ is one such cultivar that reduces take-all disease (reduced...
Microbial-induced calcite (CaCO₃) precipitation (MICP) is a well-known natural phenomenon where microbes precipitate calcite in their environment as a result of metabolic activity. It has recently been of interest as a bioengineered technique to stabilize soils for construction applications. A known metabolic pathway to induce MICP is ureolysis, where introduced...
To study the association between Fusarium root-rot resistance
(Fusarium solani f. sp. phaseoli) and economically inportant characteristics
of beans, 2259 lines each consisting of 30 plants were used.
The lines were randomly selected for root-rot reaction, but were
selected for differences in vigor and differences in plant and seed
pigments,...
Marine and coastal sedimentary archives show that the Cascadia Subduction Zone can generate great earthquakes of ~M9, most recently in 1700 CE, yet we still know little of the impacts of these events inland of the Pacific coast. Inland lakes have recently been exploited for their use as paleoseismic records...
Armillariella mellea (Vahl. ex Fr. ) Karst. was grown aseptically
in hazel stems (Corylus cornuta var. californica) which were used in
the forest to infect 290 ponderosa pines (Pinus ponderosa Laws.)
which had been "stressed" in five different manners plus two control
groups. All trees were inoculated twice giving a...
Growing trees as a green manure crop together with an annual food crop is a new technology for farmers in Oregon. To promote farmer participation and to acquire a broad knowledge of the processes involved in species interactions, three feasible alley cropping and two sweet corn monocrop planting patterns were...
Rubber without reinforcement has limited applications. The strength of reinforced rubber composites can be ten times stronger than that of unreinforced rubbers. Therefore, rubber composites are widely used in various applications ranging from automobile tires to seals, valves, and gaskets because of their excellent mechanical elastic properties. Silica and carbon...
During the summers of 1971, 1972, and 1973, a general
floristic ecological survey of the naturally-occurring vegetation
of the Bear River Migratory Bird Refuge in Utah was
carried out. Ten community types were identified and
characterized. These included two aquatic communities, the
Potamogeton pectinatus (Pope) and the Ruppia maritima/
Zannichellia...
Turbidite deposition along slope and trench settings is evaluated for the Cascadia and Sumatra-Andaman subduction zones. Source proximity, basin effects, turbidity current flow path, temporal and spatial earthquake rupture, hydrodynamics, and topography all likely play roles in the deposition of the turbidites as evidenced by the vertical structure of the...
Common camas (Camassia quamash) is a culturally important wetland plant, used as a staple food source by many indigenous peoples of western North America for thousands of years. Camas populations were once widespread, but conversion of wetland prairies to agriculture has led to declines in suitable habitat. Edible camas bulbs...
Foundation species are structurally dominant members of ecological communities that can stabilize ecological processes and influence resilience to disturbance and resistance to invasion. Being common, they are often overlooked for conservation but are increasingly threatened from land use change, biological invasions, and over‐exploitation. The pattern of foundation species abundances over...
Focus on Forestry is published by Oregon State University's College of Forestry. Our goal is to keep Forestry alumni, friends, faculty, staff, and students informed about the College of Forestry and its many activities and programs.
The migrations of four generations of the Powledge family centering around Meriwether County, Georgia were described within the context of social and economic forces in the United States in 1820 to 1900. The family was representative of thousands of families that migrated westward. The migrations were found to correlate with...
The purpose of this work is to make available reports and letters for
the Oregon Coast that were in the files of the Biological Survey and that
are now in the files of the Biological Survey's successor, the U.S. Fish and
Wildlife Service. I have changed outdated bird names to...
Conservation conflicts may develop on restoration sites with multiple species recovery objectives. For example, on Pacific Northwest prairies, the co-planting of the diploid cytotype of the common native wildflower Castilleja hispida with the endangered wildflower C. levisecta has resulted in putative Castilleja hybrids on restoration sites, prompting fears that genetic...
Lower and Middle Devonian strata crop out on the former
stable carbonate platform that existed in the Quinn Canyon Range,
through the carbonate shelf edge in the Pancake Range, to the
carbonate slope and outer-shelf basin in the Reveille Range.
The strata of the Reveille Range record a transition from...
A 0.4 ha planting of blueberry (Vaccinium corymbosum L.) was established in Oct. 2006 to evaluate the effects of cultivar (Duke and Liberty), planting method (flat versus raised beds), weed management (sawdust mulch and hand-weed control; compost plus sawdust mulch with acetic acid, flaming, and hand-weeding used as needed; and...
Understanding how the interactions and feedbacks between plant function, climate, and soils ultimately affects the terrestrial water balance and subsurface flow processes is major challenge in scientific hydrology. This dissertation summarizes the findings of a manipulative climate warming experiment, an observational field study that utilized stable-isotope tracers, and associated modeling...
In 1976-77 and 2010, Oregon State University (OSU) excavated portions of the enlisted men’s barracks and privy at Fort Hoskins, a Civil War-era fort. In operation from 1856 to 1865, this fort served as part of a security network to protect and monitor the recently created Coast Indian Reservation. The...
Purpose of the Study
The purpose of this study was to investigate the relationships
between modern and traditional schools and children's self-concepts.
In order to do this, it was necessary to describe and define the
phenomenon "self-concept" as used in education and to describe what the
author meant by modern...
In short, the brewing process uses hot water to extract fermentable sugars from malt to make a wort that is bittered by hops and finally fermented by yeast to produce beer. The four key ingredients in brewing are malt, water, hops, and yeast. Malt is perhaps the key ingredient, as...
A study was conducted over a two year period, 1973 through
1974, on perennial ryegrass-subclover pastures with stocking rates
of 7.4 (moderate), 9. 9 (heavy), and 12.4 (overstocked) ewes per
hectare to establish guidelines on stocking intensity for dryland
improved pastures in western Oregon. Climatic conditions varied
annually and caused...
American pikas (Ochotona princeps) are considered an indicator species of climate change. Adaptations for cold climates and active winters make pikas particularly sensitive to increasing temperatures. This, combined with evidence that multiple historically occupied populations have been extirpated within the past century, contributed to American pikas becoming a focal species...
The choice of what to eat is political, and food systems shape and are shaped by political and economic power. During the last several hundred years, agricultural and food power has been consolidated to an unprecedented degree, and this consolidation continues today. This paper will describe this process as “Governing...
Purpose: The purpose of this study was to determine statistically the
effects of an automated science curriculum on the science learnings
of eighth grade students. This curriculum involved the use of
Keysort cards as a flexible handbook for teachers and included in
the directions for use a teaching method which...
Fossil foraminifers from the Coaledo and Bastendorff Formations
near Coos Bay in southwestern Oregon were studied in an attempt
to determine the age and environment of deposition. Fresh unweathered
samples were collected from sea cliffs between Cape
Arago and Charleston, Oregon.
A large late Eocene delta is preserved in the...
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, from medium to coarse sand at the
base to mud or clay at the top, so that the upper contact with the