Index Catalog // ScholarsArchive@OSU

Modeling shallow-water hydrodynamics : rotations, rips, and rivers

Creator:: Long, Joseph W.
Abstract:: Hydrodynamic models are used as a diagnostic tool to understand the temporal variability of shallow-water processes that are difficult to completely resolve with traditional field measurements. For all simulations, modeled quantities are qualitatively or quantitatively compared with available measurements to gain confidence in conclusions derived from the modeled results. In...
Resource Type:: Dissertation
Full Text:: -Water Hydrodynamics: Rotations, Rips, and Rivers Abstract approved: H. Tuba Özkan-Haller

Observations of cross-shore sediment transport and formulation of the undertow

Creator:: Guannel, Gregory E.
Abstract:: A new set of data from a large-scale sand bar migration experiment is presented. During this experiment, two sandbars were generated. One of the bar was generated by the action of undertow, and sediment moved offshore. The other bar was generated by the shoreward movement of sediment coming from the...
Resource Type:: Dissertation
Full Text:: approved: H. Tuba Özkan-Haller A new set of data from a large-scale sand bar migration experiment is

Data assimilation for prediction of shallow water flows with uncertain bathymetry

Creator:: Wilson, Gregory W.
Abstract:: A new method is introduced for incorporating bathymetric uncertainty into predictions of nearshore and river flows (i.e., unstratified flows primarily forced by pressure and radiation stress gradients). The method involves the use of the ensemble Kalman filter (EnKF) as a parameter estimation scheme, where the parameter to be estimated is...
Resource Type:: Dissertation
Full Text:: Shallow Water Flows with Uncertain Bathymetry Abstract approved: ¨ H. Tuba Ozkan-Haller A new

Extreme Wave Runup and Runup Variability on Beaches

Creator:: Li, Chuan
Abstract:: Wave runup is an important physical process that affects nearshore sediment transport, coastal erosion, and flooding. Large and unexpected runup events can also be dangerous to beach goers. Extreme runup statistics are essential parameters used in engineering design of marine structures and in coastal management. Although the study of runup...
Resource Type:: Dissertation
Full Text:: and Runup Variability on Beaches Abstract approved: H. Tuba Özkan-Haller Wave runup is an

Wave runup : Physics, variability, and societal impacts

Creator:: García Medina, Gabriel
Abstract:: The U.S. Pacific Northwest is home to one of the most extreme wave climates in the world with waves of 10 m in height arriving to the coast approximately each year. With an average water temperature of 12℃, the beaches in the region are too cold to go on a...
Resource Type:: Dissertation
Full Text:: : Wave Runup: Physics, Variability, and Societal Impacts Abstract approved: H. Tuba Özkan-Haller The

Remote measurements of waves and currents over complex bathymetry

Creator:: Chickadel, Carmine C. (Carmine Christopher)
Abstract:: Waves are the primary input of energy in the nearshore region, and together with the currents forced through the transfer of momentum that occurs during the wave breaking process they are the principal mechanism for sediment transport in the nearshore. The basic physics of waves and currents are thought to...
Resource Type:: Dissertation
Full Text:: committee members, Tuba Ozkan-Haller for her incredible ability to teach even me, Mick Haller for his

The Application of Machine Learning Techniques on Marine Science Models

Creator:: Ellenson, Ashley
Abstract:: A variety of stakeholders require information about marine systems. In the open ocean, pilots of marine vessels require knowledge about environmental conditions for safe passage and route planning. On the coastline, communities rely on information about nearshore dynamics to increase safety from coastal hazards such as nearshore pollutants, coastal erosion,...
Resource Type:: Dissertation
Full Text:: , Y. Pei, G. Wilson, H. Tuba Özkan-Haller, Xiaoli Fern Coastal Engineering https://doi.org/10.1016

Observations and prediction of intermittent sediment suspension in the surf zone

Creator:: Yoon, Hyun Doug
Abstract:: In this dissertation the interactions between hydrodynamics, sediment suspension and transport, and morphological evolution in the surf zone was investigated with a large-scale laboratory experiment data, CROss-Shore Sediment Transport Experiment (CROSSTEX). The data set included comprehensive measurements of water surface elevation, fluid velocity, sediment concentration, and morphology for irregular waves...
Resource Type:: Dissertation
Full Text:: here in Corvallis. I am thankful to Dr. Solomon Yim, Dr. Tuba Ozkan-Haller, Dr. Peter Ruggiero

From the Shoreface to the Foredunes : Coastal Morphodynamics Across the Land-Sea Interface

Creator:: Cohn, Nicholas T.
Abstract:: Coastal flooding and erosion are major concerns for low lying coastal communities -- particularly in light of accelerated sea level rise and climate change. To improve quantitative understanding of the physical drivers of both flooding and coastal landscape change, this dissertation explores coastal morphodynamics bridging the land-sea interface on modally...
Resource Type:: Dissertation
Date Created:
Full Text:: other members of my committee, Tuba Özkan-Haller, Rob Holman, and Michael Olsen as well. I have been

Dune erosion models and swash zone kinematics from remote video observations

Creator:: Palmsten, Margaret L.
Abstract:: The subaerial beach, composed of sand dunes and the foreshore, provides a natural buffer zone between vulnerable land and the dissipation of storm wave energy due to wave breaking. The natural beauty of this region is attractive to people, and as a result, significant investment has been placed in this...
Resource Type:: Dissertation
Full Text:: . Once I got to Oregon State University, I was fortunate enough to be mentored by Rob and Tuba. You

Development of 2D models to estimate nearshore bathymetry and sediment transport

Creator:: Splinter, Kristen D.
Abstract:: We examine the interactions and feedbacks between bathymetry, waves, currents, and sediment transport. The ﬁrst two pro jects focus on the use of remote sensing techniques to expand our knowledge of the nearshore. Due to the plethora of snap-shot data that is available from satellites and their distribution via Google...
Resource Type:: Dissertation
Full Text:: , 2DH bar variability, a, and wave characteristics (wave height, H, wave period, T , and wave angle, θ

Hydrodynamic and Morphologic Controls on Extreme Coastal Total Water Levels Across Regional and Local Scales

Creator:: Serafin, Katherine A.
Abstract:: Coastal and estuarine flooding and erosion events are usually driven by the cumulative effect of multiple individual processes like waves, streamflow, storm surge, and/or tides. This dissertation focuses on separating the influence of the regional and local-scale geomorphologic and hydrodynamic processes driving variability in the magnitude and impacts of extreme...
Resource Type:: Dissertation
Full Text:: things coastal. To my committee members Dr. Hilary Stockdon, Dr. Phil Mote, Dr. Tuba Özkan-Haller, and

Deep-sea sediment paleomagnetism : a case study from the North Atlantic

Creator:: Strano, Sarah Elianna
Abstract:: Sedimentary records from the North Atlantic, instrumental in the development of modern paleo-geomagnetic concepts, show a highly variable field even during times of constant polarity. Yet, our understanding of how the magnetization is acquired in the sediments is poorly understood. Primary magnetizations preserved in deep-sea sediments are known to be...
Resource Type:: Dissertation
Full Text:: Ozkan-Haller, Edward Brook, without whom I would not be defending my dissertation today. They are

Ensemble-variational data assimilation for dynamically challenging coastal ocean circulation

Creator:: Pasmans, Ivo
Abstract:: Currently, forecasts produced by the Oregon-Washington (OR-WA) Coastal Ocean Forecast System are constrained by assimilation of only surface observations. The 4-dimensional variational (4DVAR) data assimilation (DA) algorithm is utilized to combine the model and the data, with the time-independent forecast ("background'') error covariance B. In this study, two possible improvements...
Resource Type:: Dissertation
Full Text:: Ozkan-Haller. I am grateful to the college administrative staff for helping out with the neverending

Climate Change Impacts to Estuarine Hydrodynamics: Tools, Methodologies, and Predictions

Creator:: Parker, Kai A.
Abstract:: Coastal communities in the U.S. Pacific Northwest (PNW) are rapidly engaging with the idea that hazards and environmental pressures are changing and may be characteristically different in the near future. This has led to a need for scientific knowledge and tools that can help coastal communities prepare and build resilience...
Resource Type:: Dissertation
Full Text:: development as a researcher. To my other committee members, Tuba Ozkan-Haller, Sarah Emerson, and Emily

Predicting the longshore-variable coastal response to hurricanes

Creator:: Stockdon, Hilary F.
Abstract:: The longshore variability of the coastal response to hurricanes may be examined within the framework of a storm-impact scaling model that compares spatially-variable beach morphology and fluid forcing. The relative elevations of dune height and storm-induced water levels are used to define three impact regimes (swash, collision, and overwash), within...
Resource Type:: Dissertation
Full Text:: Dr. Tuba Ozkan-Haller, an exceptional scientist and role model, for asking the hard questions

Effects of Wave Nonlinearity and Vertical Variation of Vegetation Density on Wave Attenuation

Creator:: Wu, Wei-Cheng
Abstract:: The understanding and prediction how coastal wetland vegetation attenuates wave action has received renewed attention with global climate change impacts and increasing populations on coastlines. Conventional attenuation models utilize empirical drag coefficients, but these coefficients exhibit a wide range of values, and there is some uncertainty in the relative importance...
Resource Type:: Dissertation
Full Text:: Ozkan-Haller, Dr. Peter Ruggiero for providing helpful guidance and supporting the development of my

Data Mining in Food Science Research and Technical Functionality of Wheat Straw-Derived Fibers

Creator:: Karaarslan Urhan, Tuba
Abstract:: This dissertation focused on data mining in food science research and on the technical functional properties of wheat straw-derived biorefinery-byproduct fiber preparations as related to potential applications as food ingredients. This first study evaluated the importance of electronic bibliographic database selection and multiple database usage during the information retrieval phase...
Resource Type:: Dissertation
Full Text:: ANALYSIS Tuba Karaarslan Urhan1, Hannah Gascho Rempel2, Lisbeth Meunier-Goddik1 and Michael H

Laboratory observations and numerical modeling of inner surf and swash zone hydrodynamics on a steep slope

Creator:: Shin, Sungwon
Abstract:: Laboratory data of free surface elevations and fluid velocities were obtained using a laser-Doppler velocimeter for the case of a periodic wave plunging over an impermeable, steep (1:10) slope with a fixed bottom roughness. The measurements were conducted over 15 cross-shore locations from the outer surf zone to the swash...
Resource Type:: Dissertation
Full Text:: and advice. I am thankful to Dr. Solomon Yim, Dr. Memck Haller, Dr. Tuba Ozkan- Hailer, and Dr. Ben

Wave-current interaction induced by standing long waves in the surf zone

Creator:: Phaksopa, Jitraporn
Abstract:: This dissertation has focused on the charateristics of bubbles generated by breaking waves and the feedback of wave-current interaction on the forcing mechanism of low frequency wave especially basin seiching wave. For the first study, Optical image capture observations of breaking waves in a laboratory surf zone are presented. The...
Resource Type:: Dissertation
Full Text:: like to express my gratitude to Prof. Tuba Özkan- Haller for insightful comments and suggestions for

Depth estimation and frontal imaging via X-band marine radar

Creator:: Honegger, David Andrew
Abstract:: This dissertation focuses on two core aspects of remote sensing: (a) interpretation of the remotely sensed data to identify and characterize sea surface features of interest, and (b) the quantitative analysis of previously characterized features to produce robust estimates of geophysical variables. Specifically, these aspects are addressed in the context...
Resource Type:: Dissertation
Full Text:: thoughtful questions. ¨ I am grateful for the insight gained through conversations with Dr. Tuba Ozkan

Efficient key management protocols for mobile ad hoc networks

Creator:: Erdem, Özkan M.
Abstract:: In this thesis, novel solutions are proposed for key management issues in mobile ad hoc networks. Presented Hierarchical Binary Tree (HBT) based model is distributed, self-organizing, scalable and does not employ online key distribution authority or group manager. Two different group authentication and group key establishment protocols are proposed for...
Resource Type:: Dissertation
Full Text:: AN ABSTRACT OF THE DISSERTATION OF Ozkan M. Erdem for the

Microwave scattering from surf zone waves

Creator:: Catalán Mondaca, Patricio A.
Abstract:: Wave breaking in the surf zone is an important forcing mechanism on the generation of nearshore currents and in the driving of sediment transport. At the same time, wave breaking can have significant spatial and temporal variability that needs to be accounted for in the description of nearshore processes. Remote...
Resource Type:: Dissertation
Full Text:: : Microwave Scattering from Surf Zone Waves Abstract approved: Merrick C. Haller Wave breaking in the surf

Remote Sensing of Nearshore Hydrodynamic and Morphodynamic Processes

Creator:: O'Dea, Annika M.
Abstract:: The use of remote sensing techniques in coastal science and engineering has rapidly increased in the past few decades. This dissertation outlines new remote sensing tools using two remote sensing technologies (lidar and X-band marine radar) along with two nearshore hydrodynamic and morphodynamic analyses supported or motivated by these remote...
Resource Type:: Dissertation
Full Text:: of Nearshore Hydrodynamic and Morphodynamic Processes Abstract approved: Merrick C. Haller The use

Radar and Optical Remote Sensing of Submesoscale Frontal Features

Creator:: Simpson, Alexandra J.
Abstract:: The coastal region is home to many types of surface fronts that exist on a submesoscale (1-10 $km$). While in situ observations capture point or transect observations of frontal behavior subsurface, their complex spatial patterns can be well-captured using remote sensing techniques, which provide synoptic views of the ocean surface...
Resource Type:: Dissertation
Full Text:: : Radar and Optical Remote Sensing of Submesoscale Frontal Features Abstract approved: Merrick C. Haller

Amplification of solitary waves along a vertical wall

Creator:: Li, Wenwen
Abstract:: Reflection of an obliquely incident solitary wave at a vertical wall is studied experimentally in the laboratory wave tank. Precision measurements of water-surface variations are achieved with the aid of laser-induced fluorescent (LIF) technique and detailed temporal and spatial features of the Mach reflection are captured. During the development stage...
Resource Type:: Dissertation
Full Text:: of Solitary Waves along a Vertical Wall Abstract approved: Harry H. Yeh Reflection of an obliquely

Advancing Spatial Data Engineering and Analysis: Integrative Approaches with GIS, Statistical Modelling, and Deep Learning

Creator:: Krivova, Maria
Abstract:: Geospatial data analysis is a multifaceted discipline encompassing the collection, processing, and visualization of diverse datasets. It models and delineates the interactions of people, objects, and phenomena within geographical spaces and predicts patterns based on the relationships between different locations. Despite significant advancements in geospatial data engineering and analytics over...
Resource Type:: Dissertation
Full Text:: ______________________________________________________________________________ Merrick C. Haller Geospatial data analysis is a multifaceted discipline encompassing

Production of C4-C10 Hydrocarbons from CO₂, H₂O, CO, H₂ and CH₄ Utilizing DC Glow Discharges, Catalytic Rapid Temperature Pulsing in Micro-Scale Reactors.

Creator:: Mohamed, Omar M.
Abstract:: This thesis experimentally determines the feasibility to creating C4 to C10 hydrocarbons from CO2, CO, H2, H2O and CH4. This is done in two steps, the initial step is the formation of ethylene through DC electrical glow discharge at ambient pressure while the second step is through temperature pulse controlled...
Resource Type:: Dissertation

Evaluating the seismic risk and resilience of an electrical power system

Creator:: Chalishazar, Vishvas H.
Abstract:: The Pacific Northwest is part of the "Ring of Fire," which is well-known for heavy seismic activity. Numerous active faults in the area have encouraged electric grid managers in the region to more deeply contemplate and proactively intervene to support grid resilience. This research introduces Monte Carlo (MC) based power...
Resource Type:: Dissertation
Full Text:: are as follows: p[H|A] denotes the probability of a given Asset (A) experiencing a typical Hazard (H1

Thermodynamic characterization of graphitic oxide surfaces

Creator:: Hatch, Conrad Valoi
Resource Type:: Dissertation
Full Text:: tx rfa *f{h rrfi thry nMy }fir*ttrr,* * tr :ort ll*trfut to Fdtltffi tr [* tt*bmtil fp hlf mr

An NMR study of bistable defects in CdTe and CdF₂

Creator:: Shroyer, Mark H.
Abstract:: Bistable properties have been reported in CdF₂ and CdTe systems doped with In and Ga. It is characteristic of these materials that the excited bistable state can be accessed by optical excitation. In this work, pulsed nuclear magnetic resonance (NMR) in conjunction with illumination at low temperatures has been used...
Resource Type:: Dissertation
Full Text:: ABSTRACT OF THE THESIS OF Mark H. Shroyer for the degree ofDoctor ofPhilosophy in Physics presented on

AquaFarm : simulation and decision-support software for aquaculture facility design and management planning

Creator:: Ernst, Douglas H.
Abstract:: A simulation and decision-support software product for aquaculture facility design and management planning is described (AquaFarm, Oregon State University©), including comprehensive documentation and applications to practical problems. AquaFarm provides (1) simulation of physical, chemical, and biological unit processes, (2) simulation of facility and fish culture management, (3) compilation of facility...
Resource Type:: Dissertation
Full Text:: AN ABSTRACT OF THE DISSERTATION OF Douglas H. Ernst for the

Ultrastructural and cytochemical studies of the oviduct

Creator:: Nayak, Ramesh Kadbet
Abstract:: The ultrastructure of the oviduct and the hormonal induced alterations in the cellular organelles of prepubertal and ovariectomized rabbits have been studied with electron-microscopic histochemical methods. The pseudostratified epithelium of the oviduct in prepubertal rabbits contained both ciliated and secretory cells. The secretory cells showed apocrine projections filled with electron-dense...
Resource Type:: Dissertation
Full Text:: OVIDUCT Abstract approved: Redacted for privacy Arthur S. H. Wu The ultrastructure of the oviduct and

The Role of Ascorbic Acid, β-Cyclodextrins, and Alternative Substrates in Dictating Rates of Polyphenol Oxidase-Catalyzed Browning in Potato-Based Reaction Mixtures

Creator:: Jiang, Shu
Abstract:: Enzymatic browning is a consequence of a series of reactions initiated by polyphenol oxidase (PPO)-catalyzed quinone formation. Unwanted browning negatively affects food quality and lowers consumer acceptability. Thus, there is general interest in strategies to control enzymatic browning. Cyclodextrins are cyclic glucan oligosaccharides that form inclusion complexes with a number...
Resource Type:: Dissertation
Full Text:: : ________________________________________________ Michael H. Penner Enzymatic browning is a consequence of a series of reactions

Suppression of Met signaling by the green tea polyphenol (-)-epigallocatechin-3-gallate (EGCG)

Creator:: Larsen, Christine A.
Abstract:: Met is a prognostic indicator of colorectal cancer patient survival. Therapies that target Met may therefore have beneficial outcomes in the clinic. Recently, EGCG was reported to suppress Met activation, although the mechanisms were not elucidated. HCT116 and HT29 human colon cancer cells were used to examine the relationships between...
Resource Type:: Dissertation
Full Text:: : ___________________________________________________________ Roderick H. Dashwood Met is a prognostic indicator of colorectal cancer patient survival

Science and efficacy of mild sodium hydroxide treatments in enzyme-based wheat straw-to-glucose processing

Creator:: Sophonputtanaphoca, Supaporn
Abstract:: The work described in this dissertation focused on chemistry related to the use of aqueous sodium hydroxide as a treatment in the processing of wheat straw. A major emphasis was the comprehensive evaluation of straw component partitioning due to sodium hydroxide (NaOH) processing. This was evaluated over a range of...
Resource Type:: Dissertation
Full Text:: -‐ Based Wheat Straw-‐to-‐Glucose Processing Abstract approved: Michael H

On Undular Bores and Solitary Waves in Variable Depth

Creator:: Knowles, Jeffrey N.
Abstract:: Numerical results are presented using a higher-order pseudo-spectral method in order to solve the Zakharov-Craig-Sulem formulation of the Euler model. We study the effects of variable bathymetry on weakly-dispersive, weakly-nonlinear, shallow water waves. Improved predictions on wave amplitude and shoaling behavior are developed by analytical means in the context of...
Resource Type:: Dissertation
Full Text:: and Solitary Waves in Variable Depth Abstract approved: Harry H. Yeh Numerical experiments were

Functional Characterization and Classification of Genes Essential to Flower Induction, Flower Development, and Seed Development in Populus and Eucalyptus

Creator:: Elorriaga, Estefania
Abstract:: This dissertation consists of four studies of Populus and Eucalyptus biotechnology and genomic science: 1) induction of floral sterility by tapetal expression of the ribonuclease Barnase in Populus; 2) CRISPR Cas9-mediated gene editing targeting LEAFY (LFY) and AGAMOUS (AG) homologs in Populus; 3) induction of floral sterility by CRISPR Cas9...
Resource Type:: Dissertation
Full Text:: : ______________________________________________________ Steven H. Strauss This dissertation consists of four studies of Populus and Eucalyptus

Physiology of ripening in pears

Creator:: Wang, Chien Yi
Abstract:: Investigations were conducted to study in detail some biochemical and physiological aspects of ripening in pears. Anjou pears picked at different degrees of maturity were treated with Ethrel (2-chloroethane phosphonic acid), 4000 ppm, and ethylene, 500 ppm, for different lengths of time. Respiration rate was measured twice daily and changes...
Resource Type:: Dissertation
Full Text:: expressed to Dr. N. I. Bishop, Dr. H. K. Phinney and Dr. H. J. Jensen for serving on my

Life history and environmental influences on avian incubation and parental care in songbirds

Creator:: Austin-Bythell, Suzanne H.
Abstract:: Patterns of nest attendance behavior by breeding birds represent a parent-offspring trade-off in which adults balance self-maintenance with parental care decisions. Incubation, in particular, is of interest because adults must provide an environment suitable for embryonic development through nest-building and contact-incubation. We evaluated how adult incubation constancy and nest visitation...
Resource Type:: Dissertation
Full Text:: AN ABSTRACT OF THE DISSERTATION OF Suzanne H. Austin-Bythell for the degree of Doctor of Philosophy

Structural Response of High-Performance Fiber-Reinforced Cementitious Composites: Evaluation, Simulation, and Sensitivity Analysis

Creator:: Khlef, Feras L.
Abstract:: The constitutive behavior of high-performance fiber-reinforced cementitious composites (HPFRCCs) under mechanical loading is characterized by significant tensile properties that play an essential role in the structural response of several applications in structural engineering. The significance of tensile properties of HPFRCCs in structural engineering is the focus of three manuscripts presented...
Resource Type:: Dissertation
Full Text:: : ____________________________________________________________________ Andre R. Barbosa Jason H. Ideker The

Gaussian random fields related to Lévy's Brownian motion : representations and expansions, Gaussian random fields related to Levy's Brownian motion : representations and expansions

Creator:: Rode, Erica S.
Abstract:: This dissertation examines properties and representations of several isotropic Gaussian random fields in the unit ball in d-dimensional Euclidean space. First we consider Lévy's Brownian motion. We use an integral representation for the covariance function to find a new expansion for Lévy's Brownian motion as an infinite linear combination of...
Resource Type:: Dissertation
Full Text:: ,d 1 X m,k=0 ⇤ m,k,p (|t|) h(m) X j=1 ' m,j (t/|t|)Z m,k,j where ⇤ m,k,p is a function of

Sub-diffraction light propagation and imaging in planar negative refraction waveguides

Creator:: Wangberg, Robyn
Abstract:: In this dissertation we study the electromagnetic properties of planar waveguides with non-magnetic strongly anisotropic dielectric cores. We develop an analytical description of the mode propagation in these systems and show that the index of refraction can be either positive or negative depending on the specific material parameters. Propagating modes...
Resource Type:: Dissertation
Full Text:: left-handed relationship between �E, �H, and �k. . . . . . . . . . . . . . . . . . . . 15 2.2 Exact

Exchange interaction studies in magnetic semiconductors by neutron scattering

Creator:: Wiren, Zachary Quincy
Abstract:: Theories predict that making a dilute magnetic semiconductor strongly p -type would allow it to remain ferromagnetic at room temperature. This is of intrest as a ferromagnetic semiconductor would allow for a great many applications in the field of spintronics. Neutron scattering experiments were undertaken to better understand the antiferromagnetic...
Resource Type:: Dissertation
Full Text:: Haller, Henri Jansen, Yun-Shik Lee, Oksana Ostroverkhova, Guenter Schneider, and Phil Siemens. TABLE

DNS study of Particle-bed-Turbulence Interactions in Oscillatory Flows

Creator:: Ghodke, Chaitanya Deepak
Abstract:: Turbulent flows over rough surfaces are encountered in many engineering and geophysical applications. Flows of this nature, due to their increasing technological interests, have been a subject of rigorous investigation in recent years. Of the particular interest to the oceanographic community is the study of turbulent oscillatory flow over rough...
Resource Type:: Dissertation
Full Text:: , Prof. Chad Higgins and Prof. Merrick Haller for taking the time out to read this thesis, evaluate and

Mapping Nearshore Bathymetry with Spaceborne Data Fusion and State Space Modeling

Creator:: Forfinski-Sarkozi, Nicholas A.
Abstract:: Despite numerous techniques for measuring and estimating water depth, bathymetry in the nearshore zone is notoriously difficult to map. Dangerous sea states, noisy environmental conditions, and expensive survey operations, particularly in remote areas, contribute to the difficulties of obtaining data along the coast. Global datasets, derived mainly from satellite altimetry...
Resource Type:: Dissertation
Full Text:: mentor. I would also like to thank my committee members, Dr. Michael Olsen, Dr. Merrick Haller, Dr

Design techniques for delta sigma modulators using VCO based ADCs

Creator:: Reddy, Karthikeyan
Abstract:: VCO-based ADCs have recently emerged as attractive alternative to conventional DeltaSigma (ΔΣ) modulator architectures. Few salient features of a VCObased ADC are: 1) the quantization noise is 1st order noise shaped, 2) it is an open loop architecture, and, 3) its implementation is mostly digital in nature. Hence, they are...
Resource Type:: Dissertation
Full Text:: being my committee members. I would also like to thank Prof. Merrick Haller for being my Graduate

Practitioner’s hands and academic eyes : a practical approach to improving disaster preparedness and response

Creator:: Thompson, Wiley C.
Abstract:: This dissertation primarily uses observations made during the 2005 Kashmir earthquake relief effort and available disaster literature to address problems that impede effective and efficient disaster preparedness and response. Three manuscripts form the body of the dissertation. The manuscripts are thematically linked through the Emergency Management Cycle. Each manuscript examines...
Resource Type:: Dissertation
Full Text:: . Merrick Haller. I appreciate the support and guidance you all have shown. Each of you has contributed

Learning based methods applied to the MAV control problem

Creator:: Salichon, Max
Abstract:: This thesis addresses Micro Aerial Vehicle (MAV) control by leveraging learning based techniques to improve robustness of the control system. Applying classical control methods to MAVs is a difficult process due to the complexity of the control laws with fast and highly non-linear dynamics. These methods are mostly based on...
Resource Type:: Dissertation
Full Text:: Robert Paasch, Dr Mike Bailey, and Dr Merrick Haller for their time and patience throughout this

Application of Nonlinear Model Predictive Controller for Ocean Wave Energy Conversion Systems

Creator:: Haider, Ali S.
Abstract:: This work addresses the application of Nonlinear Model Predictive Control (NMPC) to a class of ocean wave energy conversion systems in which the cost functional is not in a standard quadratic form, and the WEC model includes the nonlinear effects, such as the hydrodynamic viscous drag. The NMPC implementation is...
Resource Type:: Dissertation

Navigation and coordination of autonomous mobile robots with limited resources

Creator:: Knudson, Matthew D.
Abstract:: The use of autonomous robots in complex exploration tasks is rapidly increasing. Indeed, robots can provide speed and cost effectiveness in many tasks, as well as allow operation in environments that are hostile to humans. In this dissertation we: 1) provide two adaptive navigation algorithms; 2) develop a coordination mechanism;...
Resource Type:: Dissertation

A Framework to Evaluate the Risk of Human- and Component-related Vulnerability Interactions

Creator:: Irshad, Lukman
Abstract:: Most accidents and malfunctions in complex engineered systems are attributed to human error. However, a closer inspection would reveal that such mishaps often emerge as a result of poor design and human- and component-related vulnerabilities acting together. To fully understand and mitigate potential risks, the effects of such interactions between...
Resource Type:: Dissertation
Full Text:: Interactions Abstract approved: H. Onan Demirel Irem Y. Tumer Most accidents and malfunctions in complex

Variation of sugars and acids during ripening of pears and in the production and storage of pear concentrate

Creator:: Akhavan, Iradj
Abstract:: Two methods of separating sugars and acids of Bartlett pears were compared to decide upon a working method for later studies involving identification and quantitation of sugars and acids during ripening of pears and in the production and storage of pear concentrate. The first method involved precipitation of acids with...
Resource Type:: Dissertation
Full Text:: committee, Georgene V. Barte, Dr. M. W. Montgomery, Dr. H. D. Reese, and Dr. H. W

Roundabout Safety: Econometric and Machine Learning Models and Applications

Creator:: Zubaidi, Hamsa AN
Abstract:: The rapid growth in the number of roundabouts raises some significant research challenges, especially around safety performance and evaluation in the U.S. Despite the safety advantages that roundabout geometric design brings, crashes still occur. While operationally roundabouts are good at preventing severe crashes, they may lead to more less severe...
Resource Type:: Dissertation
Full Text:: , Dr. David S. Hurwitz, Dr. Katharine H. Zaworski, and Dr.Yue Zhang, for their support, valuable

Information Theoretical Analysis of Self-Similar Trees

Creator:: Chunikhina, Evgenia V.
Abstract:: Tree-like patterns are ubiquitous in nature. Botanical trees, river networks, and blood systems are the most well-known examples of complex hierarchical systems met in observations. Interestingly, many of such systems exhibit statistical self-similarity. There are two main types of self-similarity: Horton self-similarity and Tokunaga self-similarity. Although there is an increased...
Resource Type:: Dissertation
Full Text:: . Merrick C. Haller for their insightful comments and support. My special thanks goes to Prof. Ilya

Volatile composition of Pinot Noir grapes and wines under different viticultural practices in western Oregon

Creator:: Feng, Hui
Abstract:: High vegetative growth of Pinot Noir vine is a common problem in most vineyards of Oregon's Willamette Valley, where sunlight exposure and heat accumulation are limited. Consequently, growers in this region commonly use vineyard management strategies to regulate vine vigor and improve grape and wine quality. Wine quality is greatly...
Resource Type:: Dissertation
Full Text:: , Tuba Karaarslan, Xiaofen Du, Juan He, Freddy Lemus, Pete Davis, Jianqiang Song, Yan Zhang, Shuang

Using Culture-independent Genomics as a Means for Understanding Chlamydial Biology

Creator:: Putman, Timothy E.
Abstract:: The chlamydiae are a family of obligate intracellular bacteria that have a unique bi-phasic developmental cycle, unique cellular properties, and a unique set of challenges to studying its biology. While genetic manipulation is becoming routine in Chlamydia, there are significant challenges to working with this intracellular parasite. The body of...
Resource Type:: Dissertation

Critical Assessment of Chloride States and Quantities in Ordinary Portland and Specialty Cements

Creator:: Ahmed, Ahmed Abdulhaq
Abstract:: The constituent materials of concrete often contain chlorides. The presence of chlorides in sufficient amounts can disrupt the passive layer, also known as the passive film, that protects the reinforcing steel in concrete. This disruption can lead to premature corrosion of the reinforcing steel in concrete. To minimize the risk...
Resource Type:: Dissertation
Full Text:: Haller for all of the help and support. You are a person that I feel to be lucky to know and to work

Probabilistic Multi-hazard Earthquake-Tsunami Structural Risk Assessment Framework

Creator:: Alam, Mohammad Shafiqual
Abstract:: Catastrophic earthquake and tsunami events that resulted in significant loss of life and property over the past two decades have raised the global awareness regarding the need to understand the response of communities and their built environment to multi-hazard extreme events. In recognition to this impending threat to the coastal...
Resource Type:: Dissertation
Full Text:: journal publication with the following complete reference: “Alam, M. S., Barbosa, A. R., Scott, M. H

Impacts of Environmental Change on a Newly-characterized Symbiosis between a Novel Bacterial Parasite, Genus Aquarickettsia, and the Coral Acropora cervicornis

Creator:: Klinges, J. Grace
Abstract:: Coral reef ecosystems continue to be significantly altered by disease epizootics, but why some host populations remain resistant while others succumb to outbreaks remains unknown. Research across diverse animal and plant host systems has revealed that disease severity is strongly influenced by host genetics and by environmental influences on both...
Resource Type:: Dissertation

Probabilistic Tsunami Hazard and Damage Assessment of the Built Environment : Applied at Seaside, Oregon

Creator:: Park, Hyoungsu
Abstract:: Damage estimates to the built environment from tsunamis are important for disaster mitigation, including planning emergency response and recovery. This dissertation evaluates the damage states of buildings in a small urban coastal city, Seaside, Oregon, from tsunami hazards generated by a Cascadia Subduction Zone (CSZ) event. This study is separated...
Resource Type:: Dissertation
Full Text:: College of Earth, Ocean and Atmospheric Sciences: Dr. Merrick Haller, Dr. Tuba Ozkan-Haller, Dr. Peter

Bayesian Reinforcement Learning Based Control For Ocean Wave Energy Conversion

Creator:: Ghorban Zadeh, Leila
Abstract:: This work – in which three peer-reviewed academic papers are presented – addresses the ap-plication of Bayesian Reinforcement Learning to the control of a class of ocean wave energy conversion systems. The first paper presents a comparison of a Reinforcement-Learning (RL) based wave energy converter controller against standard Reactive Damping...
Resource Type:: Dissertation
Full Text:: direction with the highest cumulative reward in my research environment. Committee members, Tuba Ozkan

Tracking Photoinduced Primary Events with Femtosecond Stimulated Raman Spectroscopy and Calculations

Creator:: Wang, Yanli
Abstract:: Femtosecond stimulated Raman spectroscopy (FSRS) is a powerful ultrafast technique which can track photoinduced excited state structural events on femtosecond (fs) to picosecond (ps) timescales. In addition to high temporal and spectral resolutions, FSRS provides a broad spectral window from ca. 100—2000 cm-1 for detection, enabling the direct mapping of...
Resource Type:: Dissertation
Full Text:: state photoacid (PA*) and photobase (PB*) forms of HPTS during ESPT. An intermolecular H-bond

Strategic Application of Computations to Diverse Chemical Systems

Creator:: Brueckner, Alexander C.
Abstract:: My work has focused on streamlining the study of organic compound structure, properties, and reactions by 1) understanding and using available computational software, 2) developing software packages to facilitate data manipulation as well as augment public programs, and 3) applying public and in-house developed software to further the understanding of...
Resource Type:: Dissertation
Full Text:: ). Computations were used to fragment the detector into key components to identify the origin of the H/D isotope

Rationalization and innovative design of asymmetric organocatalysts through computational investigation

Creator:: Johnston, Ryne Connell
Abstract:: My work on computing complex catalyzed organic transformations reveals that only a few subtle chemical factors, e.g. non-classical hydrogen bonding, (hyper)conjugation and steric effects, common across different catalyst manifolds are critical for catalysis and selectivity. Rational manipulation and exploitation of these factors has led to improved catalyst designs, which has...
Resource Type:: Dissertation
Full Text:: in both the ground and transition state across many branches of chemistry and life. C–H bonds

Formation of hybrid supramolecular assemblies using biological molecules and transition metals

Creator:: Smith, Rachelle M. S.
Abstract:: Naturally occurring assemblies, such as DNA and proteins, utilize intermolecular forces (i.e H-bonding and van der Waals) to assemble. Utilizing these electrostatic interactions has only just started in the past five decades to be a tool used in synthetic chemistry in what is known as supramolecular chemistry. Supramolecular chemistry has...
Resource Type:: Dissertation
Full Text:: Naturally occurring assemblies, such as DNA and proteins, utilize intermolecular forces (i.e H-bonding and

Addressing wastewater epidemiology limitations with the use of dynamic population surrogates, complementary urinalyses and in-situ experiments

Creator:: Brewer, Alex J.
Abstract:: Wastewater epidemiology is an emerging discipline that requires collaborative research involving analytical chemists, drug epidemiologists, and wastewater engineers. Wastewater epidemiology involves the sampling and quantitative analysis of raw wastewaters from communities for illicit drugs and their metabolites. Mass loads (mass per day) and per capita (mg per day per person)...
Resource Type:: Dissertation
Full Text:: - frequency sampling (approximately one sample per h) may representatively capture the use and excretion of

John Wesley Powell : science and reform in a positive context

Creator:: Zernel, John Joseph, 1945-
Abstract:: John Wesley Powell worked actively for public land system reform while a director of geographical and geological surveys in the West from 1869 to 1894. Although this has won him acclaim as a conservationist, the basis of Powell's linkage of reform with scientific work is poorly understood. A study of...
Resource Type:: Dissertation
Full Text:: combined L. H. Morgan's appreciation of cooperative social institutions with Herbert Spencer's view of

Risk and Uncertainty Quantification Methods in Electrical Power Systems

Creator:: Johnson, Brandon S.
Abstract:: Load flow studies are one of the most essential engineering applications for grid operators because they provide a clear picture of the operating conditions of the power system. Traditionally, the load flow problem is assumed to be deterministic; that is, the system variables contain no randomness. Unfortunately, this assumption is...
Resource Type:: Dissertation
Full Text:: with each component, and the local wave number kj is calculated for the local water depth h using

Underlying Mechanisms of the Anti-inflammatory and Antioxidant Effects of Quercetin in Human Aortic Endothelial Cells : Implications for Vascular Inflammation and Atherosclerosis

Creator:: Li, Chuan
Abstract:: Atherosclerosis is the underlying cause of ischemic heart disease and stroke and is the leading cause of death worldwide, especially in developed countries. As an inflammatory disease of arteries in a hyperlipidemic milieu, expression of adhesion molecules, such as endothelial-leukocyte adhesion molecule-1 (E-selectin) and intercellular adhesion molecule-1 (ICAM-1), on endothelial...
Resource Type:: Dissertation
Full Text:: 2 (Nrf2) activation, increased mRNA and protein levels of heme oxygenase 1 (HO-1), NAD(P)H

Extending market potential of blueberries with controlled atmosphere storage

Creator:: Boonprasom, Pichaya
Abstract:: The goal of this research was to determine if controlled atmosphere (CA) storage could be used to extend the market period of fresh Pacific Northwest blueberries and to evaluate the effects different storage atmospheres have on fruit quality. Furthermore, this research also investigated heat and mass transfer characteristics during cooling...
Resource Type:: Dissertation

On the design, modeling, and testing of ocean wave energy converters

Creator:: Bosma, Bret
Abstract:: Ocean wave energy converter technology continues to advance and new developers continue to emerge, leading to the need for a general design, modeling, and testing methodology. This work presents a development of the process of taking a wave energy converter from a concept to the prototype stage. A two body...
Resource Type:: Dissertation
Full Text:: . I would like to give special thanks to Doug Halamay and Chris Haller for their camaraderie in the

Investigating the Paleoseismic Potential of Small, Southern Cascadia Lakes

Creator:: Ross, Ann Elizabeth Morey
Abstract:: 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...
Resource Type:: Dissertation
Full Text:: younger deposit (deposit H, dated to 1820-1880 CE; attributed to a slab earthquake which occurred in

The influence of dietary carotene levels on semen phosphatases in farm animals

Creator:: Eapen, Kochukaleekal John
Resource Type:: Dissertation
Full Text:: . McKenzie and Dr. S. H. Wu, Department of Dairy and Animal Husbandry, for opportunity, counsel and

Molecular characterization of the MX genes of rainbow trout (Oncorhynchus mykiss)

Creator:: Trobridge, Grant David
Abstract:: The Mx protein family of rainbow trout (Oncorhynchus mykiss) was characterized at the molecular level. With primers derived from a partial sequence of Perch (Perca fluviatis) Mx genomic DNA, a partial rainbow trout Mx genomic DNA sequence was obtained by polymerase chain reaction (PCR) amplification. All salmonid fish investigated contained...
Resource Type:: Dissertation
Full Text:: , 1966). The A2G Mx resistance to influenza was still present in both immunosuppressed (Haller et al

Quest for a Cure: Persistent Residual Incontinence Post-obstetric Fistula Repair in Uganda

Creator:: Ruder, Bonnie J.
Abstract:: Obstetric fistula is estimated to affect 1–2 million women worldwide, predominantly in low-resource countries in sub-Saharan Africa and southeast Asia. The primary intervention for obstetric fistula is surgery, which is described as a relatively simple surgical procedure with an extremely high psychosocial and economic benefit relative to cost. Research addressing...
Resource Type:: Dissertation
Full Text:: , Dwaine Plaza, Susan Shaw, Nana Osei-Kofi, Tuba Özkan-Haller, Lisa Gaines, Kali Furman, Deborah John

The effects of ocean variability and breaking waves on wave energy converter reliability and survivability

Creator:: Brown, Adam
Abstract:: The reliability and survivability of a wave energy converter (WEC) is highly dependent on the variability and non-linearity of the ocean itself. Ocean variability occurs on many time scales. Climate variability occurs decade-to-decade, and year-to-year in the number and intensity of winter storms. Seasonal variation of wave height and period...
Resource Type:: Dissertation
Full Text:: Gravitational acceleration h Total water depth H Wave height measured crest to trough Hs Significant wave

Ocean Acidification Impacts on Bivalves at Multiple Organizational Levels: From Individual Larvae to Bivalve Aggregations Habitats

Creator:: Gimenez Calvo, Iria
Abstract:: Many marine bivalves are sensitive to ocean acidification (OA) stress and often show heightened sensitivity during brief early larval and post-larval life stages, potentially leading to population bottlenecks. Most of the evidence to date has been collected in laboratory experiments that focused on physiological responses at the organismal level under...
Resource Type:: Dissertation
Full Text:: Ozkan-Haller, Ricardo Letelier, Clare Reimers, Joe Jennings, Dale Hubbard, Marnie Jo Zirbel, Jesse

Sizing and Performance of the Pendulum Power Take-Off Wave Energy Converter: Modularity and Chaotic Behavior

Creator:: Dizon, Chris
Abstract:: Multiple wave energy converter (WEC) archetypes exist with varying power take-off (PTO) designs in the attempt to maximize ocean energy harnessed and converted into useful energy. The pendulum PTO is popular for its simple, yet robust functionality due to its internally located components and simple operation. Additionally, this PTO does...
Resource Type:: Dissertation

Local and over-all heat transfer coefficients in baffled heat exchangers

Creator:: Narayanan, Krishnaswami
Resource Type:: Dissertation
Full Text:: . C. Mang, departmental machinist, for his assistance in some of the construction. To Mr. R. H

Assessment of a model to predict attitudes and behavior of vocational teacher trainees toward handicapped individuals

Creator:: Stephens, Sarah
Abstract:: A major problem of this study was to assess a model for predicting attitudes and behavior of vocational teacher trainees toward handicapped learners. A second problem was to determine whether or not both attitudes and behavior of vocational teacher trainees toward handicapped learners could be changed. The sample for this...
Resource Type:: Dissertation
Full Text:: ' (Woelfel and Haller, 1971:75). Self-reflexive activity refers to behavior in which individuals confront

Influence of upwelling-season coastal currents on near-bottom dissolved oxygen concentrations over a submarine bank

Creator:: Adams, Katherine A.
Abstract:: Wind-driven coastal upwelling brings subsurface water onto the central-Oregon shelf after the spring transition each year. This cold and salty source water is oxygen-poor, yet above the hypoxic threshold, dissolved oxygen < 1.4 ml l⁻¹. Once on the shelf, dissolved oxygen (DO) concentrations of upwelled near-bottom waters are modified by...
Resource Type:: Dissertation

It Depends: Defining Cooperation and Evaluating Effectiveness in Transboundary Waters

Creator:: McCracken, Melissa J.
Abstract:: With the increasing international focus on transboundary cooperation as a part of the Sustainable Development Goal (SDG) Framework, there is global recognition of transboundary water cooperation as a tool for improved governance and management of transboundary surface and groundwaters. Yet, there is not an agreed upon definition of transboundary water...
Resource Type:: Dissertation
Full Text:: without your support. Specifically, I want to thank Jane Waite and Dr. Tuba Ozkan-Haller. The two of you

Growth and reproductions of Oreochromis niloticus (L.) in tropical aquatic microcosms at fluctuating temperature regimes

Creator:: Rwangano, Félicien
Resource Type:: Dissertation
Full Text:: ) for 122 days under a 12-h photoperiod simulating tropical conditions. Higher growth rates were

The relation of the serum phosphatases to growth of genetically different groups of beef cattle

Creator:: Alexander, Graham Irving
Resource Type:: Dissertation
Full Text:: graduate students for their advice and interest, and especially to H. Mason and S. . Sabin for their

Techno-economic and Life-cycle Analyses of Glucosamine and Lipid Production from Marine Diatom Cyclotella sp.

Creator:: Xiang, Xuwen
Abstract:: Currently the production of biofuel from algae is not economically competitive with petroleum fuel. However, co-production of high-value products may be able to justify the cost of large-scale algae cultivation. The basic goal of this study is to develop a techno-economic analysis (TEA) and Life-cycle assessment (LCA) for the production...
Resource Type:: Dissertation
Full Text:: , Bryan Kirby, Altan Ozkan, Omar Chiriboga, Paul LeDuff, Bob Durst, Xulei Wu, Nattaporn Chotyakul

The concentration of riboflavin in the serum and urine of human subjects on a controlled diet

Creator:: Wu, Mei-Ling
Abstract:: The study reported in this thesis is part of an investigation designed to determine the metabolism of thiamine and riboflavin in human subjects who were maintained on controlled diets. Part of this investigation was made during a 30-day experimental period in 1950 and the other part, during a 30-day experimental...
Resource Type:: Dissertation
Full Text:: H LITEMTPitB REVIM... 3 HISTOSICAL MCKGBODMD 3 PHXSI0L06T OF SIBOFLAini $ Enzymatic

Bioindication of air quality in forests of northern and central California using epiphytic macrolichen communities

Creator:: Jovan, Sarah
Abstract:: The unifying purpose of this dissertation was to describe, model, and map relationships between epiphvtic macrolichen communities and air quality in Ibrests of northern and central California. First, multivariate analyses were used to subdivide the large study area into three model areas with similar climate, topography, and lichen communities: the...
Resource Type:: Dissertation
Full Text:: 'nitrophiles." We used the model to estimate relative NI-h deposition to all study plots and to examine

New perspectives on evolutionary relationships within Pinus (Pinaceae) and within subsection Ponderosae (subgenus Pinus)

Creator:: Willyard, Ann Nachreiner
Abstract:: A fossil-calibrated phylogenetic framework based on exemplars from each of the four taxonomic sections within Pinus was created using multiple nuclear and chloroplast loci. Calibration at the well-defined subgeneric split within Pinus with either fossil leaves and cones (ca. 45 million years ago) or fossil wood (ca. 85 million years...
Resource Type:: Dissertation
Full Text:: . The taxonomic status of Pinus washoensis H. Mason & Stockw. (Pinaceae). Ann Naturhist Mus Wien 99B

Power system reliability and power quality assessments with grid-connected wave energy converters

Creator:: Boller, Michael D.
Abstract:: Generating abundant, renewable energy from Earth’s oceans is an attractive option for meeting increasing energy demand. Marine renewable energy also comes with the variability of renewable sources, which impact the reliability and power quality of the electrical grid. On a transmission-level, this dissertation looks at ensuring reliability of the power...
Resource Type:: Dissertation

Renewable Energy in the Pacific Northwest - Technical and Economic Analysis of 100% Renewable Portfolios, including Seasonality Impacts and Potential Applications of Energy Storage

Creator:: Harpool, Scott
Abstract:: Renewable electrical energy sources are relatively easy to integrate at moderate penetrations, utilizing a combination of technical and market methods to increase grid flexibility. However, integrating high renewable portfolios is more challenging, and the optimal combination of resources will vary depending on the features of specific geographic areas. This study...
Resource Type:: Dissertation

Nutrient Addition Strategies for the Marine Diatom Cyclotella sp to Control Cell, Lipid, and Chitin Formation.

Creator:: Chiriboga Novillo, Omar Guillermo
Abstract:: Marine diatoms are unicellular photosynthetic organisms that produce unique nanomaterials, energy dense lipid-molecules, and specialty carbohydrate molecules that can be all extracted from a single microorganism. The centric marine diatom Cyclotella sp. was used as a model organism for cultivation in a biorefinery system, where multiple co-products can be harvested...
Resource Type:: Dissertation
Full Text:: mentoring, and Altan Ozkan and Paul LeDuff for their help in developing my research skills and keeping a

Relation of fresh fruit quality factors to the canning quality of the Italian prune

Creator:: Wiley, Robert Craig
Abstract:: Approximately 200 raw prunes were harvested from each of five Italian prune trees near Corvallis every three days for nine consecutive harvest dates. Forty individual fruit from each tree were drawn at random and subjected to a series of fresh fruit quality tests. For each quality factor which was measured,...
Resource Type:: Dissertation

Genetic and environmental factors affecting certain productive characters in sheep

Creator:: McLeroy, G. B. (George B.)
Resource Type:: Dissertation
Full Text:: May• J~wut. July and Augu.-t of 1941·1960 tor West Coast tuba b;y the Dittereut Market Grade

Effect of moisture stress on yield and quality of winter wheat seed

Creator:: Assuncao, Marcos Vinicius
Abstract:: Two experiments were conducted to determine the effects of moisture stress on physiological changes that occur during the vegetative and reproductive stages of the wheat (Triticum aestivum L.) plant, and to relate these effects to seed yield, quality and performance. In a field experiment, different levels of moisture stress were...
Resource Type:: Dissertation
Full Text:: the course of this study. Special appreciation is extended to Dr. H. C. Potts from Mississippi State

Permineralized Mesozoic Moss Gametophytes and their Implications for Bryophyte Evolution

Creator:: Bippus, Alexander C.
Abstract:: Mosses (Phylum Bryophyta) are widely considered to be among the most ancient groups of land plants (embryophytes) and they are the second most speciose embryophyte phylum with ~13,000 extant species. Despite their diversity and antiquity, mosses have a limited fossil record, which primarily consists of gametophytes entombed in Cenozoic amber....
Resource Type:: Dissertation
Full Text:: Crum, H. 1988. A Focus on Peatlands and Peat Mosses. The University of Michigan Press, Ann Arbor

Mechanisms and Regulation of the Mitotic Kinesin-14 KlpA

Creator:: Popchock, Andrew R.
Abstract:: Faithful segregation of genetic material during cell division is essential to all life on earth. In eukaryotes, the mitotic spindle – a bipolar array consisting of cytoskeletal filaments called microtubules – is the cellular machinery responsible for this function. The mitotic spindle requires both exquisite spatiotemporal organization and the generation...
Resource Type:: Dissertation

Preparation and analytical application of some chelating ion exchange resins

Creator:: Pennington, Lloyd Drew
Resource Type:: Dissertation
Full Text:: at OJ'&aft!C' chel. tins OOIIP~.. Dew1opaenttl b\ both or th :e • · beea ••teas:t•al, H .Ptwted 1r1

Testing of wave energy converters using the Ocean Sentinel Instrumentation Buoy

Creator:: Lettenmaier, Terrance
Abstract:: Ocean testing of Wave Energy Converter (WEC) prototypes is necessary to facilitate commercial WEC development. The Ocean Sentinel Instrumentation Buoy, completed in August 2012, provides a stand-alone load for WEC prototypes during ocean testing. The first part of this work was to develop the power conversion and data acquisition equipment...
Resource Type:: Dissertation

Assessing Community Preferences for Healthcare Priority Setting in Taiwan : An Integrated Citizens Jury and Discrete Choice Experiment

Creator:: Schoon, Rebecca L.
Abstract:: Background: All health systems struggle with unlimited needs for health care, yet limited resources with which to address them. Under national health insurance systems, policymakers must make explicit and potentially contested decisions around resource allocation. Policymakers have recognized the need to include public values in decisions of how to distributing...
Resource Type:: Dissertation
Full Text:: - national-healthcare-cheng Donaldson, C., Baker, R., Mason, H., Jones-Lee, M., Lancsar, E., Wildman, J

Search Constraints

Search Results

Limit your search