Index Catalog // ScholarsArchive@OSU

Cleaning and Sanitizing Surfaces on Produce Farms: Optimizing What, How, and When

Creator:: Ohman, Erik
Abstract:: Production of fresh produce takes place outdoors, and therefore, is exposed to many routes of contamination (e.g., soil, contaminated water, manure, etc.) by human pathogens. Although precautions are taken to reduce this risk, pathogens can be regularly introduced to produce handling facilities. To manage the risk of cross-contamination from potentially...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Erik Ohman for the degree of Master of Science in Food Science and

A 60 Second Exposure of Whole Body Vibration has no Effect on Muscular Strength or Vertical Jump Height.

Creator:: Welch, John D.
Abstract:: For more than 30 years, researchers have investigated the effects of whole body vibration (WBV) platforms on athletic performance. WBV is a modality in which an individual stands on a vibrating platform to obtain performance effects. Frequency and amplitude of the vibration are the commonly adjusted parameters. The use of...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF John D. Welch for the degree of Master of Science in Kinesiology

Developing a Strategic Conservation Project for the Oregon Coast Aquarium

Creator:: Prendergast, Lisa D.
Abstract:: This study developed a strategic conservation project for the Oregon Coast Aquarium in Newport, Oregon focusing on a signature species and this aquarium’s conservation focus areas (i.e., marine debris, sustainable fisheries, water quality, climate change). This study also examined the potential for incorporating an ecotourism or wildlife tourism component to...
Resource Type:: Capstone Project
Full Text:: Conservation Project for the Oregon Coast Aquarium Lisa D. Prendergast Master’s Project

Epithermal neutron beam design at the Oregon State University TRIGA Mark II reactor (OSTR) based on Monte Carlo methods

Creator:: Tiyapun, Kanokrat
Resource Type:: Masters Thesis
Full Text:: extended to Arthur D. Hall and Scott A. Crail, who provided nuclear data for the TRIGA Mark-II Reactor. I

Mark-recapture estimates of population parameters for selected species of small mammals

Creator:: Hammond, Ellen L.
Abstract:: I used program CAPTURE to analyze 1,535 data sets for 33 North American species of small mammals for sources of variation in capture probabilities and to characterize species-specific responses to markrecapture trapping. CAPTURE incorporates seven models to account for all possible combinations of heterogeneity (h), behavioral response (b), and time...
Resource Type:: Masters Thesis
Full Text:: Mark-recapture estimates of population parameters for

Propagule sources, disturbance characteristics and the inital establishment of riparian vegetation after debris flows

Creator:: Gecy, Jeanne Leslie
Abstract:: Debris flows are a major cause of disturbance to riparian vegetation. Both observational and experimental studies were used to examine the initial recovery of riparian vegetation after debris flows on headwater streams in the western Cascades of Oregon. My goal was to determine the roles of seedlings and vegetative sprouts,...
Resource Type:: Masters Thesis
Full Text:: Vegetation after Debris Flows. Redacted for Privacy Abstract approved: Mark V. Wilson Debris flows are a

Applying the McDonaldization thesis and norm activation model to examine trends and effects of commercial outdoor recreation and tourism in Juneau, Alaska

Creator:: Janson, Sera
Abstract:: As recreation and tourism visitation increases and government budgets decrease, public land management agencies are using private commercial operators as an alternative source of offering products and services. Changes and trends in commercial outdoor recreation and tourism such as a large scale increase in the number of visitors can affect...
Resource Type:: Masters Thesis
Full Text:: : _____________________________________________________________________ Mark D. Needham As recreation and tourism visitation increases and government budgets

Constraints to urban park visitation : Conceptual connections and spatial attributes for traditionally well-served and underserved residents

Creator:: Rushing, Jaclyn R.
Abstract:: Connecting with nature is associated with social, physical, and emotional benefits such as stress relief, improved physical health, and lower crime. Parks and other natural areas offer spaces in which to connect with nature and reap these and other benefits (e.g., family bonding, social events, learning). Despite increasing populations of...
Resource Type:: Masters Thesis
Full Text:: . Abstract approved: ______________________________________________________ Mark D. Needham

Perceptions of protection : coastal resident cognitions concerning new marine reserves in Oregon

Creator:: Perry, Elizabeth E.
Abstract:: Protected area creation, including creation of marine reserves (MRs), is increasingly molded by ecosystem based management (EBM) that integrates biological and social information in the pre and post establishment phases. Collecting social data from large and representative samples of the public (as opposed to other stakeholder groups) before establishing a...
Resource Type:: Masters Thesis
Full Text:: . Abstract approved: _____________________________________________________________________ Mark D

Encounters, norms, crowding, management, and behavioral responses of visitors at coastal state parks in Oregon

Creator:: Mouw, Wesley J.
Abstract:: With the baby boomer cohort retiring and arguably having more time for outdoor recreation, coupled with population increases and government agencies encouraging people to recreate outdoors, areas such as state and national parks will likely continue seeing high visitation. It is imperative, therefore, for outdoor recreation managers and researchers to...
Resource Type:: Masters Thesis
Full Text:: Responses of Visitors at Coastal State Parks in Oregon Abstract approved: Mark D. Needham

Voluntary environmental programs at an alpine ski area: influence of recreationists' knowledge, motivations, attachment, value orientations, and specialization

Creator:: Little, Christopher M.
Abstract:: Voluntary environmental programs (VEPs) have been created to encourage companies to engage in behaviors that mitigate environmental impacts (e.g., recycling, emissions reduction). Many ski areas participate in the Sustainable Slopes Program, an initiative that promotes VEPs in the ski area industry. Past research has addressed the performance of VEPs in...
Resource Type:: Masters Thesis
Full Text:: : _____________________________________________________________________ Mark D. Needham Voluntary environmental programs (VEPs) have been created to encourage

Wild Waters : Perspectives on Oregon’s Marine Reserves as Marine Wilderness Areas

Creator:: Johnston, Jennifer R.
Abstract:: Designation of areas as marine wilderness has been proposed as a strategy for managing the increasing threats facing the world’s oceans. Although social factors influence marine protected area success, the human dimensions of marine wilderness remain minimally explored. This thesis examines views of marine wilderness expressed by a representative sample...
Resource Type:: Masters Thesis
Full Text:: : _____________________________________________________________________ Mark D. Needham Designation of areas as marine wilderness has been proposed as a

Electrofishing mark-recapture and depletion methodologies evoke behavioral and physiological changes in cutthroat trout (Oncorhynchus clarki)

Creator:: Mesa, Matthew G.
Abstract:: We examined the behavioral and physiological responses of wild and hatchery-reared cutthroat trout Oncorhynchus clarki subjected to a single electroshock, electroshock plus marking, and multiple electroshocking in natural and artificial streams. In a natural stream, trout released after capture by electrofishing and marking showed distinct behavioral changes: fish immediately sought...
Resource Type:: Masters Thesis
Full Text:: Electrofishing mark-recapture and depletion methodologies

A stereochemically controlled approach to the morphine alkaloids: racemization of 8,9-benzo-4,5-dihydro-6,7-pyrido[4,3-d] oxanin-3(2H)-ones

Creator:: Runyan, Mark T.
Abstract:: A method for the control of absolute stereochemistry in morphine syntheses has been demonstrated by the resolution and efficient racemization of the advanced morphine precursor , 9-methoxy-3-methyl-5,6-dihydro-3H-benzofuro[3,2-e]isoquinoline- 7(7aH)-one, I. This was accomplished by the facile coversion of optically resolved I to its ring opened form, 5,6,7,8-tetrahydro-10-methoxy-3-methyl-7-oxo[1]benzoxonino[ 6,7-c]pyridinium tosylate, II, (Equation...
Resource Type:: Masters Thesis
Full Text:: alkaloids: racemization of 8,9-benzo-4,5-dihydro-6,7-pyrido[4,3-d] oxanin-3(2H)-ones AN ABSTRACT OF THE

Elimination of 11-nor-delta-9-tetrahydrocannabinol-9-carboxylic acid when normalized to urinary creatinine

Creator:: Beardsley, Grant D.
Resource Type:: Masters Thesis
Full Text:: -carboxylic acid when normalized to urinary creatinine AN ABSTRACT OF THE THESIS OF Grant D. Beardsley for

Experimental design of physical aquifer models for evaluation of groundwater remediation strategies

Creator:: Humphrey, Mark D.
Abstract:: Groundwater resources have become seriously threatened due to improper use by industrial, municipal, and even public sectors. Widespread contamination of aquifer systems has jeopardized human health and the environment and methods for restoring these systems are needed. Biological and chemical in situ remediation, where contaminants are degraded within the natural...
Resource Type:: Masters Thesis
Full Text:: evaluation of groundwater remediation strategies AN ABSTRACT OF THE THESIS OF Mark D. Humphrey for the

The effect of feeding tallow, urea and protected tallow on in vivo nutrient digestion in sheep

Creator:: Aseltine, Mark Stephen
Abstract:: Five sheep digestion trials with four animals per treatment and three treatments per trial were conducted to determine if feeding protected tallow and/or protein would alter the deleterious effects of feeding urea and tallow together. Apparent digestibility coefficients, nitrogen retention and biological values were calculated. An additional trial was also...
Resource Type:: Masters Thesis
Full Text:: in vivo nutrient digestion in sheep AN ABSTRACT OF THE THESIS OF MARK STEPHEN ASELTINE for the

Sedimentary basins of the Peru continental margin : structure, stratigraphy, and cenozoic tectonics from 6°S to 16°S latitude

Creator:: Thornburg, Todd Mark
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF ThE THESIS OF Todd Mark Thornburg for the degree

Part I : development and application of an arsenic speciation technique using ion-exchange solid phase extraction coupled with GFAAS ; Part II : investigation of zinc amalgam as a reductant

Creator:: Bos, Mark C.
Abstract:: Two related techniques, based upon ion-exchange solid phase extraction, have been developed for the determination of arsenic speciation. The inorganic arsenic species arsenite (As(III)) and arsenate (As(V)) are separated by anion-exchange and detected with graphite furnace atomic absorption spectrophotometry (GFAAS) with a nickel matrix modifier. The first separation technique, which...
Resource Type:: Masters Thesis
Full Text:: Ion-Exchange Solid Phase Extraction Coupled with GFAAS Mark C. Bos and James D. Ingle Jr

Geostatistics applied to groundwater contaminant plume characterization

Creator:: Cooper, Richard Mark
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Richard Mark Cooper for the degree

Lake level regulation, shoreline erosion and shore protection : Flathead Lake, Montana

Creator:: Lorang, Mark
Abstract:: Concern regarding increased coastal erosion has heightened amid growing acceptance of global warming and associated sea-level rise. This study examines shoreline erosion in Flathead Lake, Montana due to five decades of artificially elevated lake levels. It provides a model to investigate coastal erosion associated with sea-level rise. The natural water...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Mark S. Lorang for the degree of

Effects of wood species and prior fungal exposure on the feeding habits of the dampwood termite Zootermopsis angusticollis

Creator:: Mankowski, Mark Edward
Abstract:: The effects of natural preconditioning (source wood), wood species, and previous exposure of wood to two types of fungi on the feeding rates and protozoa survival in the Pacific dampwood termite Zootermopsis angusticollis (Isoptera: Termospidae) were examined under laboratory conditions. Termites were exposed to four wood species that had been...
Resource Type:: Masters Thesis
Full Text:: Mark Edward Mankowski for the degree of Master of Science in Entomology presented on August 19, 1992

Genetic comparison of Deschutes River steelhead and rainbow trout at selected enzyme loci

Creator:: Chilcote, Mark W.
Resource Type:: Masters Thesis

Bedrock geology of western Taylor Park, Gunnison County, Colorado

Creator:: Bailey, Mark Hopkins
Abstract:: The western Taylor Park area covers about 65 square miles on the western flank of the Sawatch Range. It is underlain chiefly by Precambrian rocks, partially covered on the east by glacial debris and overlapped on the west and south by Paleozoic sedimentary rocks. The Precambrian rocks include a group...
Resource Type:: Masters Thesis

Activation, incorporation and modification of capreomycidine during viomycin biosynthesis

Creator:: Fei, Xiaobo
Abstract:: Molecular genetic and enzymological techniques have been employed to study antibiotic biosynthesis. The nonproteinogenic amino acid capreomycidine is the signature residue found in the tuberactinomycin family of antitubercular peptide antibiotics and an important element of the pharmacophore. Recombinant VioG, a single module peptide synthetase from the viomycin gene cluster cloned...
Resource Type:: Masters Thesis
Full Text:: : _______________________________________________ T. Mark Zabriskie Molecular genetic and enzymological techniques have been employed to

Establishment and growth of natural and planted conifers ten years after overstory thinning and vegetation control in 50-year-old Douglas-fir stands

Creator:: Nabel, Mark R.
Abstract:: Forest managers of public lands in western Oregon and Washington have become increasingly interested in creating additional conifer cohorts in young, even-aged, second-growth Douglas-fir stands. The purpose of our research was to assess the establishment, survival, and growth of naturally-regenerated and underplanted conifers 10-13 years after overstory thinning and understory...
Resource Type:: Masters Thesis
Full Text:: Introduction AN ABSTRACT OF THE THESIS OF Mark

Partitioning of rare earth and high field strength elements between pargasitic amphibole and silicate melts

Creator:: Hilyard, Mark D.
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Mark D. Hi lyard for the degree of

Modeling of the orientation dependence of scanned HgCdTe infrared detectors

Creator:: Reudink, Mark D.
Abstract:: Mercury cadmium telluride is important in the detection of electromagnetic radiation in the eight to twelve micron atmospheric window for infrared imaging systems. High resolution infrared imaging systems use either large (256x256 element to 1024x1024 element) staring arrays or much smaller (1-6 element) scanned arrays in which the image is...
Resource Type:: Masters Thesis
Full Text:: infrared detectors AN ABSTRACT OF THE THESIS OF Mark D. Reudink for the degree of Master of Science in

Studies of the fungal endophyte Acremonium coenophialum in tall fescue

Creator:: Azevedo, Mark D.
Abstract:: Tall fescue is thought to have co-evolved with the fungal endophyte Acremonium coenophialum to form a mutualistic relationship. Endophyte-infected (EI) plants can have increased growth and survival when compared with endophyte-free (EF) plants. Responses to endophyte-infection vary and are host-genotype and fungal-biotype specific. Mechanism(s) by which endophyte-infection confers increased growth...
Resource Type:: Masters Thesis

The effects of static and dynamic stretching on reaction time and performance in a countermovement jump

Creator:: Perrier, Erica Taylor
Abstract:: PURPOSE: The purpose of this research was to quantify the effects of a warm-up with static or dynamic stretching on countermovement jump height, reaction time, muscle onsets for tibialis anterior (TA) and vastus lateralis (VL), and low back/ hamstring flexibility. METHODS: Twenty one recreationally-active males (24.4 ± 4.5 yrs), recruited...
Resource Type:: Masters Thesis
Full Text:: Mark A. Hoffman PURPOSE: The purpose of this research was to quantify the effects of a warm-up

Encounter norms of snorkelers and scuba divers at Molokini, Hawai'i : methodological and managerial applications

Creator:: Bell, Caitlin M.
Abstract:: Over the past few decades, tourism and recreation activities have increased in tropical marine settings, and studies have examined social and ecological impacts of these activities. Some studies have examined social impacts such as encounters, crowding, and encounter norms or standards that individuals use to evaluate encounters with others as...
Resource Type:: Masters Thesis
Full Text:: : _____________________________________________________________________ Mark D. Needham Over the past few decades, tourism and recreation activities have

Inactivation of bacterial pathogens in drinking water

Creator:: Hartlerode, Evelyn R.
Abstract:: Wine is known to have been enjoyed since ancient times. Although early civilizations where unaware of scientific mechanisms of the properties of wine, empirical methods allowed them knowledge of its intoxicating effects as well as its healthful properties. These properties lead the ancients to use wine for many purposes including...
Resource Type:: Masters Thesis
Full Text:: . Abstract approved:______________________________________________________ Mark A. Daeschel Wine is

Direct stakeholder perceptions of collaboration, indicators, and compliance associated with the wilderness best management practices in Tracy Arm-Fords Terror Wilderness, Alaska

Creator:: Pomeranz, Emily F.
Abstract:: Increasingly popular methods for managing impacts of tourism in nature-based settings include collaborative and voluntary codes of conduct. In southeast Alaska, for example, the Tourism Best Management Practices (TBMP) in Juneau and Wilderness Best Management Practices (WBMP) in Tracy Arm-Fords Terror Wilderness have been created to address shore and marine...
Resource Type:: Masters Thesis
Full Text:: Mark D. Needham Increasingly popular methods for managing impacts of tourism in nature-based

Antimicrobial activity of nisin and hen lysozyme

Creator:: Jaczynski, Jacek
Abstract:: Varying concentrations of the food preservatives nisin and lysozyme were adsorbed onto glass surfaces chemically modified to exhibit different degrees of hydrophobicity. The antimicrobial activity of the adsorbed preservatives was evaluated by documenting the ability of Listeria monocytogenes to adhere and grow on the glass surfaces. A bioluminescence protocol was...
Resource Type:: Masters Thesis
Full Text:: Activity of Nisin and Hen Lvsozvme". Abstract approved:. Major Professor, MarK Daeschel Varying

On the Role of Spatial Clustering Algorithms in Building Species Distribution Models from Community Science Data

Creator:: Roth, Mark
Abstract:: This paper discusses opportunities for developments in spatial clustering methods to help leverage broad scale community science data for building species distribution models (SDMs). SDMs are critical tools that inform the science and policy needed to mitigate the impacts of climate change on biodiversity. Community science data span spatial and...
Resource Type:: Capstone Project
Full Text:: Clustering Algorithms in Building Species Distribution Models from Community Science Data by Mark

The role of plastic mulch as a water conservation practice for desert oasis communities of Northern China

Creator:: Ingman, Mark Christian
Abstract:: China's Minqin Oasis once welcomed traders along the ancient Silk Road with rivers, lakes, and lush forests, yet today the region's farmland and grassland are increasingly being engulfed by the sands of the Gobi Desert. The severity of this incremental catastrophe for a declining population of 300,000 residents has brought...
Resource Type:: Masters Thesis
Full Text:: Mark Christian Ingman for the degree of Master of Science in Water Resources Policy and Management

Evaluating the rates of nitrate removal for a nitrate containing, low organic carbon wastewater interacting with carbon-containing solid substrates

Creator:: Hart, Jeffrey L.
Abstract:: The primary objective of this study was to evaluate the rates of nitrate removal for a nitrate containing, low organic carbon wastewater interacting with four different carbon-containing solid substrates (alder woodchips, corn silage, manure and woodchip biochar). Batch systems were tested for nitrate removal, and systems with a combination of...
Resource Type:: Masters Thesis
Full Text:: Interacting with Carbon-containing Solid Substrates Abstract approved: Mark E. Dolan The

Estimation of Population Age Structure, Detection Probability, and Density of Red Tree Voles in Oregon

Creator:: Marks-Fife, Chad A.
Abstract:: Red tree voles (Arborimus longicaudus) are a unique species of Arvicoline rodent found in western Oregon and northwest California. Their preferred habitat is mature and old-growth coniferous forest dominated by Douglas-fir (Pseudotsuga menziesii). Tree voles are an important prey item for northern spotted owls and many other predators, but are...
Resource Type:: Masters Thesis
Full Text:: operations and field work in this project. Mark Linnell and Leo Fremonti spent seven grueling months

Assessing biological values of Wetland Reserve Program wetlands for wintering waterfowl

Creator:: Evans-Peters, Graham, R.
Abstract:: The Wetland Reserve Program (WRP) is one conservation tool that mitigates national wetland loss and a primary goal for the program includes optimizing wildlife habitat by restoring wetland functions and values. Few studies have evaluated the WRP, which limits our understanding of its impact on wildlife populations. I assessed the...
Resource Type:: Masters Thesis
Full Text:: : ________________________________________________________________________ Bruce D. Dugger Abstract The Wetland Reserve Program (WRP) is one conservation tool that

Opportunities and challenges in engaging stakeholders in marine reserves planning in Oregon

Creator:: Bird, Arwen
Abstract:: This paper explores the contributions of social capital, social connections, and stakeholder engagement to the goals of ecosystem-based management in a local scale marine planning process. The body of work presented here, through a journal article and report, uses the lens of social capital to evaluate stakeholder engagement in making...
Resource Type:: Capstone Project
Full Text:: Flaxen Conway, Lori Cramer, and Mark Needham

Food abundance and energetic carrying capacity for wintering waterfowl in the Great Salt Lake wetlands

Creator:: Johnson, Amber Marie
Abstract:: Great Salt Lake (GSL), Utah, is surrounded by 191,884 hectares of wetlands. These wetlands provide critical habitat for hundreds of thousands of breeding, migrating and wintering waterfowl each year. As the human population around GSL increases, government officials have proposed to divert more water from the Jordan, Ogden, and Bear...
Resource Type:: Masters Thesis

Structural analysis of thermally inactivated nisin

Creator:: Musafija-Jeknic, Tamara
Abstract:: Nisin, an antimicrobial peptide used in food preservation was evaluated for thermal stability. Nisin retained antimicrobial activity after having been heated at 121°C for seven hours. Anhydrous nisin and concentrated nisin solutions (5-10 mg/ml) were still active after having been heated up to 190°C or 230°C. When exposed to high...
Resource Type:: Masters Thesis
Full Text:: approved: Mark A. Daeschel Nisin, an antimicrobial peptide used in food preservation was evaluated

Antimicrobial effects of wine on enteric pathogens in a model stomach

Creator:: Just, Jessica R.
Abstract:: There have been several epidemiological studies linking alcohol consumption to a decreased risk of contracting illness from foodborne bacterial contamination. To study this phenomenon, we examined the survival of Escherichia coli 0157:H7 and Salmonella typhimurium in grape juice and wine and then designed a model stomach to investigate the effect...
Resource Type:: Masters Thesis
Full Text:: Effects of Wine on Enteric Pathogens in a Model Stomach System. Abstract approved by: 1_^ . Mark A

Design of a microstructured liquid-liquid separator utilizing a capillary pressure gradient

Creator:: Zoebelein, Conor M.
Abstract:: Continuous liquid-liquid two-phase separation is needed in microfluidic devices. Due to the small characteristic lengths of microreactors, phenomena such as mass transport via molecular diffusion occur within seconds. Typically, discrete slugs of an extract are created within microchannels for high specific interfacial area to achieve intensified mass transfer. A challenge...
Resource Type:: Masters Thesis
Full Text:: Pressure Gradient Abstract approved: ______________________________________________________ Mark

Low power, high performance pseudo-static D flip-flop

Creator:: Low, Tim D.
Abstract:: Digital systems, in particular microprocessor, have recently experienced phenomena growth in performance. Both technology advancement and clever design have sustained this performance growth. As clock frequency heads into the Ghz range, new circuit design, for both logic and storage, are needed. Such new circuit technology must provide needed performance with...
Resource Type:: Masters Thesis
Full Text:: Low power, high performance pseudo-static D flip-flop AN

The effect of fire regime on coarse woody debris in the west central Cascades, Oregon

Creator:: Wright, Pamela J.
Abstract:: This study examined the effect of fire regime on coarse woody debris (CWD) mass using a combination of field data and modeling. The objectives were to use field sampling to determine how CWD differs between two areas that have had different fire regimes, and investigate how fire frequency and severity,...
Resource Type:: Masters Thesis
Full Text:: :;..--=-··-- __ Mark E. Harmon This study examined the effect of fire regime on coarse woody debris (CWD

Formation and modification of enduracididine, a nonproteinogenic amino acid

Creator:: Tan, Ying
Abstract:: Molecular genetic and enzymological techniques have been employed to study antibiotic biosynthesis. In this thesis, we studied the formation and modification of the nonproteinogenic amino acid enduracididine (End), which exists in two important antibiotics, mannopeptimycins (MPPs) and enduracidin. Sequence analysis of the MPP gene cluster revealed that the product of...
Resource Type:: Masters Thesis
Full Text:: approved: _______________________________________________ T. Mark Zabriskie

Spatial and temporal variability of carbon dynamics in a tropical forest of Colombia

Creator:: Sierra, Carlos Alberto
Abstract:: Despite the importance of tropical forest ecosystems in the global carbon cycle, there have been few studies of carbon dynamics in this biome. The magnitude of carbon stocks in the tropics and their changes over time are poorly known since ground-based observations are lacking. In this study, total carbon stocks...
Resource Type:: Masters Thesis
Full Text:: Abstract approved: Mark E. Harmon Despite the importance of tropical forest ecosystems in

Mechanistic probes and inhibitors of L-pipecolate oxidase

Creator:: Liang, Xi
Resource Type:: Masters Thesis
Full Text:: . 1996 Title: Mechanistic Probes and Inhibitors of L-Pipecolate Oxidase. Abstract approved: T. Mark

Physiological response of Nitrosomonas europaea to oxytetracycline, chromium, and silver

Creator:: Schaerer, Morgan A.
Abstract:: Nitrosomonas europaea carries out the first step in the biological nitrogen removal process in wastewater treatment by oxidizing ammonia to nitrite. It has been shown to be sensitive to a wide range of contaminants. The antibiotic oxytetracycline and the heavy metals chromium and silver have been found in wastewater influent....
Resource Type:: Masters Thesis
Full Text:: , and Silver. Abstract approved: ___________________________ Mark E. Dolan Nitrosomonas

Partial purification and characterization of L-pipecolic acid dehydrogenase from rabbit kidney cortex

Creator:: DeHart, Jennifer E.
Resource Type:: Masters Thesis
Full Text:: , Prof. T. Mark Zabriskie. Mark allowed me to venture in my own direction, even when it was an obvious

The effects of native plants on non-native plant abundance in a restoration setting : differences among native species and the predictive ability of species traits

Creator:: Goodridge, Jennifer M.
Abstract:: Reducing the cover of non-native species is one of the challenges of ecosystem restoration. The goal of this study is to identify native species traits that will increase native species cover and reduce non-native species cover in the first growing season at upland and wetland prairie restoration sites. Native and...
Resource Type:: Masters Thesis
Full Text:: Species and the Predictive Ability of Species Traits. Abstract approved: Mark V. Wilson Reducing the

Low Level Quantification of 1,4-Dioxane and Investigation of 1,4-Dioxane Co-Metabolism by Mycobacterium sp. 1A.

Creator:: McKeage, Kevin J.
Abstract:: 1,4-Dioxane (dioxane) is a probable human carcinogen and is often found comingled with chlorinated aliphatic hydrocarbon (CAH) contamination since dioxane is used as a stabilizer in CAH solutions. Dioxane is miscible in water, has a low K[subscript ow], low H[subscript cc], and is highly recalcitrant in the environment. The presence...
Resource Type:: Masters Thesis
Full Text:: . 1A. Abstract approved: ______________________________________________________ Mark E

Modified linear theory and Kalman filtering for in flight projectile impact point prediction

Creator:: Hainz, Leonard C.
Abstract:: A method for real time in-flight prediction of the ground impact point of an indirect fire projectile is investigated. The method investigated is comprised of a combination of an impact point predictor and an extended Kalman filter state estimator based on modified linear theory. The modified linear theory model is...
Resource Type:: Masters Thesis
Full Text:: Prediction. Abstract approved: Mark F. Costello A method for real time in-flight prediction of the

Regulation of BCL11B by post-translational modifications

Creator:: Liu, Xiao
Abstract:: Bcl11b (B-cell lymphoma/leukemia 11b), also known as Ctip2 (Chicken ovalbumin upstream promoter transcription factor (COUP-TF)-interacting protein 2), is a C2H2 zinc finger transcriptional regulatory protein, which is an essential protein for post-natal life in the mouse and plays crucial roles in the development, and presumably function, of several organ systems,...
Resource Type:: Masters Thesis
Full Text:: . Abstract approved Mark E. Leid Bcl11b (B-cell lymphoma/leukemia 11b), also known as

Molecular analysis of bacterial community dynamics during bioaugmentation studies in a soil column and at a field test site

Creator:: Li, Jun
Abstract:: 1,1,1-Tricholorethane (1,1,1-TCA), a widely used industrial solvents, is one of the most common subsurface contaminants. Transformation processes in the subsurface can result in the production of 1,1-dichioroethane (1,1-DCA) and 1,1- dichioroethene (l,1-DCE) from 1,1,1-TCA contamination, resulting in plumes of mixed chlorinated aliphatic hydrocarbons (CAHs). A butane-utilizing microorganism, strain 1 83BP,...
Resource Type:: Masters Thesis
Full Text:: Dynamics during Bioaugmentation Studies in a Soil Column and at a Field Test Site Abstract approved: Mark

Spatio-temporal patterns and trends in MODIS-retrieved radiative forcing by snow impurities over the Western U.S. from 2001 - 2022

Creator:: Jensen, Anna S.
Abstract:: Seasonal mountain snowpack of the western US (WUS) is a key water resource to millions of people. Impurities at the snow surface directly affect snowmelt timing and rate, as they contribute to earlier peak streamflow, snow disappearance, and less water availability in dry months. Predicting the locations, timing, and intensity...
Resource Type:: Capstone Project
Full Text:: - Pacific Northwest - Rio Grande D Texas-Gulf - Upper Colorado 250 500 1,000 Kilometers snow

Bridging Data and Theory: Developing Physics Informed Machine Learning for Snow Hydrology

Creator:: Steele, Hannah
Abstract:: Snow is a critical component of global climate regulation and provides water resources to over one billion people worldwide. Yet current measurement methods and modeling techniques lack the ability to fully capture snow characteristics such as snow water equivalent (SWE), snow depth, and density variable landscapes. In recent years, the...
Resource Type:: Masters Thesis
Full Text:: approved: ______________________________________________________ Mark Raleigh Snow is a

Solutions of plate equation for the prediction of ink droplets in inkjet cartridges

Creator:: Sangplung, Saangrut
Abstract:: Droplet formation in inkjet cartridges has been studied for several decades to improve print qualities. Currents and rigid nozzle plates are used inside the cartridge to fix the size of droplets exiting the chamber. This research is focused on studying the effect of nozzle flexibility on droplet formation. A flexible...
Resource Type:: Masters Thesis
Full Text:: Plate Equation for the Prediction of Ink Droplets in Inkiet Cartridges. Abstract approved: Mark F

Two projectiles connected by a flexible tether dropped in the atmosphere

Creator:: Frost, Geoffrey W.
Abstract:: This study investigates the atmospheric flight dynamics of a munition system and the effect of a tether reel resistance mechanism for limiting the impact that the unreeling process has on the munition system. The munition system consisting of two projectiles connected by a tether line is released from an aircraft...
Resource Type:: Masters Thesis
Full Text:: Dropped in the Atmosphere. Abstract approved: Mark F. Costello This study investigates the

Laboratory investigations of the natural fluorescence of marine phytoplankton

Creator:: Laney, Samuel R.
Abstract:: The influence of nitrate availability and irradiance on phytoplankton natural fluorescence was investigated in laboratory cultures of the marine diatom Thalassiosira weissflogii (Bacillariophyceae). Two cultures of phytoplankton, differing only in the nitrate-limited growth rate, were compared to learn how increases in irradiance influences natural fluorescence. Instrumentation was developed for these...
Resource Type:: Masters Thesis
Full Text:: : ~~--~~---~--~------,........,-------- Mark R. Abbott The influence of nitrate availability and irradiance on phytoplankton natural

Carbon storage in a Pacific Northwest conifer forest ecosystem : a chronosequence approach

Creator:: Janisch, Jack E.
Abstract:: As concern over global warming intensifies, sequestration and storage of atmospheric CO2 has become an important scientific and policy issue. Confusion persists, however, over interpretation of forest carbon (C) source-sink dynamics, in part because conclusions drawn depend on temporal and spatial scales of analysis (e.g. day-week scale vs. successional-scale), type...
Resource Type:: Masters Thesis
Full Text:: . I Abstract Approved: ---.ao..-----r:v-----w~--,,....------,-( -.-,--- Mark E. Harmon As

A chronosequence of wood decomposition in the boreal forests of Russia

Creator:: Yatskov, Mikhail A.
Abstract:: Coarse woody debris (CWD) decomposition in the Russian boreal forests of the southern taiga zone was studied at four sites located near St. Petersburg in Northwestern Russia, Krasnoyarsk in Eastern Siberia, lrkutsk in the Baikal region, and Khabarovsk in the Russian Far East. This study was part of a broader...
Resource Type:: Masters Thesis
Full Text:: . Abstract approved: -"'""-----'"--'--""--=-'~L....-'~=----~--==------------ Mark E. Harmon Coarse woody

Physical and chemical factors controlling the distribution of the major phytoplankton classes at the Antarctic Polar Front, 170 °W

Creator:: Mengelt, Claudia
Abstract:: This study was part of the Antarctic Environment and Southern Ocean Study (AESOPS) program, whose main goal was to investigate the role of the biota in the carbon flux from the atmosphere to the interior of the ocean. We quantified the abundance of the major phytoplankton classes and examined the...
Resource Type:: Masters Thesis
Full Text:: Antarctic Polar Front, 170 ·w. Abstract approved: -----r----..-------------- Mark R. Abbott This study

Efficacy of electrolyzed oxidizing (EO) water combined with UV-C light or gas exchange on sanitization of Jalapeno pepper using Serratia marcesens as surrogate for Salmonella

Creator:: Ekundayo, Olufunmilayo R.
Abstract:: Jalapeño peppers are usually consumed raw and fresh with minimal processing. They contain antioxidants and bioactive compounds which are of human health benefits. There have been an increasing number of reports of foodborne outbreaks attributed to inaccessibility of sanitizers to Salmonella , E.coli and Listeria monocytogenes when embedded in fruit...
Resource Type:: Masters Thesis
Full Text:: : ______________________________________________________________________ Mark A. Daeschel Jalapeño peppers are usually consumed raw and fresh with minimal

Population characteristics of exotic plants in a Willamette Valley native prairie

Creator:: Lantz, Lisa E.
Resource Type:: Masters Thesis
Full Text:: Characteristics of Exotic Plants in a Willamette Valley Native Prairie. Abstract approved: Mark V. Wilson

Performance in static, dynamic, and clinical tests of postural control in individuals with functional ankle instability

Creator:: Nakagawa, Lyn H.
Abstract:: Objectives: To evaluate postural control in individuals with functional ankle instability using static, dynamic, and clinical balance tests. Also, to examine the relationships between the performances in each of these tests. Design: Postural control was evaluated with a single leg balance test, a balance test involving movement, and the star...
Resource Type:: Masters Thesis
Full Text:: life. A special thank you is also due to Dr. Mark Hoffman for accepting the role as my Major Professor

Performance of a smart direct fire penetrator using a ram air controlled mechanism

Creator:: Chandgadkar, Siddharth Suhaschandra
Abstract:: The effectiveness of a direct fire penetrator projectile equipped with an actively controlled ram air mechanism is investigated through dynamic simulation. The ram air control mechanism consists of a rotary sleeve valve which directs air flow from an inlet at the center of the nose to side ports. The projectile...
Resource Type:: Masters Thesis
Full Text:: : Performance of a Smart Direct Fire Penetrator using a Ram Air Controlled Mechanism. Abstract approved: Mark

A comparison of two neuropsychological concussion assessment batteries

Creator:: Padilla, Diana M.
Abstract:: Objectives: To compare the neuropsychological concussion assessment testing batteries of the Standardized Assessment of Concussion (SAC™) test and the Immediate Post-Concussion Assessment and Cognitive Testing (ImPACT™) test and determine if the tests measure similar neuropsychological functions as well as determine the test-retest reliability of the pre and post season measures...
Resource Type:: Masters Thesis
Full Text:: Neuropsychological Concussion Assessment Batten es Abstract approved: Mark A. Hoffman Objectives: To compare the

Model predictive control of a direct fire projectile equipped with canards

Creator:: Ollerenshaw, Douglas R.
Abstract:: Launch uncertainties in uncontrolled direct fire projectiles can lead to significant impact point dispersion, even at relatively short range. A model predictive control scheme for direct fire projectiles is investigated to reduce impact point dispersion. The control law depends on projectile linear theory to create an approximate linear model of...
Resource Type:: Masters Thesis
Full Text:: Predictive Control of a Direct Fire Projectile Equipped with Canards Abstract approved: Mark F. Costello

Comparison of pharmacokinetic data analysis with two competing pharmacokinetic software program

Creator:: Karnpracha, Chanida
Abstract:: Pharmacokinetics (PK) is the study of the transit of drug into, within and removal from the body to reveal how the body acts on a drug when it is taken. There are four major areas in PK: absorption, distribution, metabolism and elimination. Pharmacokinetics research can be separated into two areas:...
Resource Type:: Masters Thesis
Full Text:: : J. Mark Christensen Pharmacokinetics (PK) is the study of the transit of drug into, within and

Lysozyme as an aid in preventing stuck wine fermentations

Creator:: Hetz, Uri
Abstract:: To provide a possible alternative for the antimicrobial action of sulfur dioxide in winemaking, and address the issue of stuck fermentations, I studied the efficacy of chicken lysozyme (EC 3.2.1.17) as an antimicrobial in grape juice. Two different forms of lysozyme were used: native lysozyme (NL), that is known to...
Resource Type:: Masters Thesis
Full Text:: Preventing Stuck Wine Fermentations. Abstract approved: . v Mark A. Daeschel To provide a possible

The disposition of four therapeutically important antimicrobial agents in llamas

Creator:: Murdande, Sharad B.
Abstract:: The disposition of four therapeutically important antimicrobial agents was studied in llamas following intravenous bolus administration. Six llamas were each given ampicillin, tobramycin, trimethoprim and enrofloxacin at a dose of 12 mg/kg, 1 mg/kg, 3 mg/kg and 5 mg/kg of body weight with a wash out period of 3 days...
Resource Type:: Masters Thesis
Full Text:: Four Therapeutically Important Antimicrobial Agents in Llamas Abstract approved . J. Mark Christensen

Effect of leg muscle fatigue on the contributions of the somatosensory, visual, and vestibular systems to balance

Creator:: Korioukhina, Maia O.
Abstract:: Objectives: To evaluate the effect of leg muscle fatigue on balance and to determine the contributions of the somatosensory, visual, and vestibular systems to balance of apparently healthy males and females. Design: Forty-two subjects were randomly assigned to either the experimental or control groups and then subdivided based on gender...
Resource Type:: Masters Thesis
Full Text:: approved: Mark A. H6f(maif Objectives: To evaluate the effect of leg muscle fatigue on balance and to

The use of lysozyme in winemaking : the interaction of lysozyme with wine and efficacy in preventing malolactic fermentation in Oregon Pinot noir and Chardonnay

Creator:: Green, Jeffery L.
Abstract:: Hen egg white lysozyme is a hydrolytic enzyme effective at preventing the growth of Gram positive bacteria by degrading the bacterial cell wall to a point of cell lysis. Investigating lysozyme as a processing tool in wine to control the growth of lactic acid bacteria and malolactic fermentation has significant...
Resource Type:: Masters Thesis
Full Text:: - - - ^ - - . Mark A. Daeschel Hen egg white lysozyme is a hydrolytic enzyme effective at preventing the growth

The roles of environmental constraints and aggression on male-female pairing in the coral-reef fish Gobiosoma evelynae

Creator:: Harding, Jeffrey A.
Abstract:: 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...
Resource Type:: Masters Thesis
Full Text:: wish to thank my major professor and mentor, Dr. Mark Hixon, for his encouragement and support

Stability of oral liquid cimetidine HCl and furosemide repackaged in unit dose containers at various temperatures

Creator:: Lee, Rai-yun
Resource Type:: Masters Thesis
Full Text:: approved:Redacted for Privacy Dr. J. Mark Christensen Oral liquid cimetidine HC1 or furosemide were repackaged

An evaluation of blackberry harvest sanitation and the ability of foodborne pathogens to survive in blackberry products

Creator:: Sales, Melissa M.
Abstract:: Blackberries, genus Rubus, are an important Oregon agricultural commodity. In their fresh and processed forms, they offer many health benefits and may be able to help Americans better achieve fruit consumption recommendations because of convenience and pleasant sensory qualities. However, the susceptibility of blackberry products to contamination with bacterial pathogens...
Resource Type:: Masters Thesis
Full Text:: Survive in Blackberry Products Abstract approved: Mark A. Daeschel Blackberries, genus Rubus

Vehicle and enhancer effects on penetration of acyclovir through chicken and cockatiel skin in vitro

Creator:: Ruan, Xiumei
Resource Type:: Masters Thesis
Full Text:: (P) is a function 15 of diffusion coefficient (D), partition coefficient (K), and the thickness

Antioxidant potential of yeast containing beer

Creator:: Morris, Edward E.
Abstract:: It has been suggested that cellular damage from oxygen radicals is one of the processes leading to cardio-vascular disease and cancer. Natural antioxidants prevent uncontrolled oxidative reactions by decreasing molecular oxygen levels, scavenging chain-initiating and chain-propagating free radicals, chelating metals, or decomposing peroxides. Beer is rich in antioxidants, derived both...
Resource Type:: Masters Thesis
Full Text:: Potential of YeasfrCoataining Beer. Abstract approved: , Mark A. Daeschel / It has been

Factors determining species composition of post-disturbance vegetation following logging and burning of an old growth Douglas-fir forest

Creator:: Clark, Deborah Louise, 1950-
Resource Type:: Masters Thesis
Full Text:: thank Mark Wilson, my major professor, for being readily available for numerous discussions during

Conservation of Sidalcea nelsoniana through habitat management : effects of burning, mowing, and altered flooding regime on a rare Willamette Valley perennial

Creator:: Bartels, Marilynn R.
Abstract:: Active habitat management plays a key role in the preservation of native ecosystems and rare species, especially in the Willamette Valley of Oregon, where natural succession to woodlands threatens the few wetland prairies remaining after 150 years of agriculture and urbanization. Sidalcea nelsoniana, listed as threatened under the federal Endangered...
Resource Type:: Masters Thesis
Full Text:: Regime on a Rare Willamette Valley Perennial. Abstract approved: 9 Mark V. Wilson Active habitat

Studies on the spatial variability of phytoplankton physiology and biomass in the Oregon upwelling system

Creator:: Sanders, Rachel B.
Abstract:: The Oregon upwelling system is a region of high biomass and primary productivity as well as strong mesoscale variability. In order to examine the interaction of physical forcing and ecosystem dynamics, four 3-week sampling cruises were conducted in the Oregon upwelling system as part of the Northeast Pacific Global Ocean...
Resource Type:: Masters Thesis
Full Text:: Variability of Phytoplankton Physiology and Biomas the Oregon Upwelling System Abstract approved: Mark R

Effects of fire on seedling establishment in upland prairies in the Willamette Valley, Oregon

Creator:: Maret, Mary P.
Abstract:: Prior to European settlement, native prairie dominated the landscape of the Willamette Valley. Today, due to urbanization, agriculture, and the cessation of burning, only isolated remnants of these grasslands still exist. In response to conservation concerns, there has been a move to restore the remaining prairies in the Willamette Valley,...
Resource Type:: Masters Thesis
Full Text:: : Mark V. Wilson Prior to European settlement, native prairie dominated the landscape of the Willamette

A study of some economic factors in the scarification of red clover and alfalfa seed

Creator:: Hale, Ralph Irvin
Resource Type:: Masters Thesis
Full Text:: were obtained in soil when carbon dioxide was produced by means of rotting manure d other organic

The status of commercial education in the secondary schools of Oregon

Creator:: Whillock, Bertha Alice
Resource Type:: Masters Thesis
Full Text:: sensions 1. Length of session 2. Courses taken C. Ìumber of evening terms 1. Courses taken D. Number

The Oregon growers cooperative association, with an analysis of the causes for its failure

Creator:: Haley, Robert Murkland
Resource Type:: Masters Thesis
Full Text:: systemat- Ic orderly provision for management and operation is of (D comparatively recent origin

Cultural aims of a secondary commercial course

Creator:: Vance, Herbert Townsend
Resource Type:: Masters Thesis
Full Text:: so acquired to new material. (32) P. H. Darrow, Ph. D. -- "The subject matter of book- keeping

The Data Stream: Assessing the Flow of Real Time Marine Science Data from Research Vessel to the Classroom

Creator:: Miller, Danielle N.
Abstract:: Today’s technology-based society makes information more accessible than ever, in turn creating a growing demand for a workforce that has the skills necessary to utilize data. Contributing to this influx of data is Oregon State University (OSU), who was selected to guide the design and construction process of three Regional...
Resource Type:: Masters Thesis
Full Text:: Tracy D. Crews Today’s technology-based society makes information more accessible than ever

Metabolic uncoupling of Shewanella oneidensis MR-1, under the presence of excess substrate and 3,3’,4’,5 tetrachlorosalicylanilide

Creator:: Saini, Gaurav
Abstract:: Dissociation between catabolism and anabolism, generically termed “metabolic uncoupling”, has been studied for aerobic cultures of Shewanella oneidensis MR-1. Under conditions promoting metabolic uncoupling, the cell yield diminishes while the substrate utilization rate remains largely unchanged. The effects of excess substrate conditions and TCS addition on the metabolism of pyruvate...
Resource Type:: Masters Thesis
Full Text:: excess substrate and 3,3’,4’,5 Tetrachlorosalicylanilide. Abstract Approved: Brian D

Effect of consumers' perceptions of political figures on source credibility and attitude toward apparel

Creator:: Stewart, Lauren M.
Abstract:: Throughout history, there have been many examples of political figures who have influenced fashion: from Theodore Roosevelt to Jacqueline Kennedy to Michelle Obama. Companies have taken advantage of the influence that political figures have as fashion opinion leaders, even going so far as to purchase keywords such as "Michelle Obama"...
Resource Type:: Masters Thesis
Full Text:: also like to thank my graduate committee members, Dr. Minjeong Kim, Dr. Colleen Bee and Dr. Mark

Impurity effect on magnetism of nickel for under bump metallization via magnetron sputtering

Creator:: Ong, Justin B.
Abstract:: Nickel or nickel alloys are common materials used in under bump metallization (UBM) in flip chip technology. Nickel is used because of its slow reaction rate with tin-based solder at elevated temperatures. However, nickel is ferromagnetic at room temperature, hence cannot be easily deposited with magnetron sputtering. In this study,...
Resource Type:: Masters Thesis
Full Text:: : Milo D. Koretsky Nickel or nickel alloys are common materials used in under bump metallization (UBM

Slow fashion development : a model for sustainability

Creator:: Tobeck, Matthew R.
Abstract:: The purpose of this study was to develop a slow fashion design model using the house of quality model (HOQ) to provide designers an opportunity to improve the overall sustainability of an apparel product. Slow fashion is based on the slow food movement that supports the consumption of food that...
Resource Type:: Masters Thesis
Full Text:: Abstract approved: Leslie D. Burns Kathy K. Mullet The purpose of this study was to develop a slow

Efficacy of electrolyzed oxidizing water and ozonated water for microbialdecontamination of fresh strawberries (Fragaria x ananassa)

Creator:: Udompijitkul, Pathima
Abstract:: The objectives of this project were to evaluate the efficacies of electrolyzed oxidizing (EO) and ozonated waters as antimicrobial agents for enhancing the microbiological safety of fresh strawberries (Fragaria x ananassa). The influence of sodium chloride (NaCl) concentrations used for preparing EO water was evaluated on their bactericidal activities against...
Resource Type:: Masters Thesis
Full Text:: approved: Mark A. Daeschel Yanyun Zhao The objectives of this project were to evaluate the

Generation of an animation interface for ORGANON

Creator:: Hanus, Mark L.
Abstract:: The focusing of public attention on the practices of forest managers has resulted in the need for new tools to help explain the results of these practices. The traditional tools of tables and graphs of numerical values require a significant investment in learning the forestry profession. Once the investment is...
Resource Type:: Masters Thesis

Sweet corn (Zea mays) production in a white clover (Trifolium repens) living mulch : the second year

Creator:: Peterman, Mark K.
Abstract:: Soil-related problems common to Oregon farmers are erosion, compaction, organic matter depletion, and nutrient loss. High costs of fertilizer, fuel, and weed control are additional management problems. Growing a secondary crop as a living mulch with a primary crop may ease some of these problems. Sweet corn production in Oregon...
Resource Type:: Masters Thesis
Full Text:: (Trifolium repens) living mulch : the second year AN ABSTRACT OF THE THESIS OF Mark K. Peterman for the

Removal of E. coli with alternative media Biosand filters

Creator:: Fulton, Nathan J.
Abstract:: When Biosand filters cannot be constructed with crushed quarry rock due to resource limitations, a suitable alternative filter media is needed. In this research, two crushed quarry rock alternatives were examined. Three bench-scale Biosand filters with crushed rock, beach sand, and heat-treated beach sand media were simultaneously dosed with Willamette...
Resource Type:: Masters Thesis
Full Text:: presented on August 16, 2012. Title: Removal of E. coli with Alternative Media Biosand Filters. Brian D

Investigation of transport phenomena in a highly heterogeneous porous medium

Creator:: Vogler, Daniel
Abstract:: This work focuses on solute mass transport in a highly heterogeneous two-region porous medium consisting of spherical low-hydraulic conductivity inclusions, embedded in a high-hydraulic conductivity matrix. The transport processes occuring in the system are described by three distinct time scales. The first time scale reflects the characteristic time for convective...
Resource Type:: Masters Thesis
Full Text:: Phenomena in a Highly Heterogeneous Porous Medium Abstract approved: Brian D. Wood This work focuses on

Coarse woody detritus dynamics, variable decay rates and their contribution to wildland fuel succession following high-severity fire disturbance in dry-mixed conifer forests of Oregon's eastern Cascades

Creator:: Dunn, Christopher J.
Abstract:: Reducing future fire severity is a proposed ecological benefit of salvage logging following wildfire disturbance. Considerable debate continues over the ability of such management practices to achieve this objective given limited understanding of coarse woody detritus (CWD) dynamics, fuel bed alterations, and post-fire vegetative growth. The objective of this study...
Resource Type:: Masters Thesis
Full Text:: completion of this project I have received support from Dr. Mark E. Harmon and his research staff, Becky

Seasonal snowcover dynamics beneath boreal forest canopies

Creator:: Link, Timothy E.
Abstract:: The accurate simulation of snowpack deposition and ablation beneath forested areas is confounded by the fact that the vegetation canopy strongly affects the snow surface energy balance. The canopy alters the radiation balance of the snowcover, and reduces the wind speed at the snow surface. Data collected as part of...
Resource Type:: Masters Thesis
Full Text:: radiation at the snow surface is expressed: Sd,f =T d X Sd [2] where: Sdf is the diffuse radiation at

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