Index Catalog // ScholarsArchive@OSU

In vitro anaerobic trinitrotoluene (TNT) degradation with rumen fluid and an isolate, G.8

Creator:: Lee, Taejin
Resource Type:: Dissertation
Full Text:: rumen fluid and an isolate, G.8 AN ABSTRACT OF THE THESIS OF Taejin Lee for the degree of Doctor of

Numerical Analysis of a Spine as a Retrofit of a Moment-Resisting Frame

Creator:: Rivera Torres, David M.
Abstract:: Steel moment-resisting frames (MRFs) are widely used in the United States to resist seismic forces. MRFs have many advantages, including architectural versatility, vetted member and connection detailing requirements, and high ductility for special MRFs (SMRF). However, MRFs require large members to meet story drift criteria. Moreover, strong-column-weak-beam requirements can result...
Resource Type:: Masters Thesis

The use of LiDAR to identify forest transportation networks

Creator:: Beck, Storm J. C.
Abstract:: The production of high value non-conventional products, such as long utility poles; or the production of low value bulky products, such as chips or grindings; provide opportunities for forest owners to increase value from their forests. The transport of these products requires the use of specialized trucks and trailers. However,...
Resource Type:: Masters Thesis
Full Text:: . (S. Beck, Interviewer) Corvallis, Oregon. Sessions, J., Wimer, J., Costales, F., & Wing, M. G

The measurement of nearshore bathymetry on intermediate and dissipative beaches

Creator:: Côté, Jessica Magee
Abstract:: In 1996, Beach et al. first proposed the idea of mounting an echo-sounder on a Waverunner to measure nearshore beach profiles. This thesis discusses the Coastal Profiling System, an extension of the original work, which has been utilized to measure nearshore bathymetry at selected sites along the coasts of North...
Resource Type:: Masters Thesis
Full Text:: Intermediate and Dissipative Beaches Abstract approved: William G. McDougal In 1996, Beach et al. first

Numerical and physical modeling of wave forces on A-Jacks units

Creator:: Wise, Larry
Abstract:: A numerical model is developed to estimate wave forces on A-Jacks armor units. The forces include drag, inertia, buoyancy, and slamming as the unit penetrates the free surface. The wave force model is used to determine the rigid body motions of the units. Bulk forces on a matrix of units...
Resource Type:: Masters Thesis
Full Text:: Units. Abstract approved: William G. McDougal A numerical model is developed to estimate wave

Evaluation of a unified design for asphalt recycling by means of dynamic and fatigue testing

Creator:: Whitcomb, William G.
Abstract:: Design methods for pavement mixtures containing recycled asphalt concrete have been explored in many studies. Most methods of design are modelled after procedures originally developed for conventional construction with virgin raw materials. The unique properties of aged asphalt as raw material are rarely considered when applying conventional procedures. The approach...
Resource Type:: Masters Thesis
Full Text:: means of dynamic and fatigue testing AN ABSTRACT OF THE THESIS OF William G. Whitcomb in Civil

Correlation of methods for solving indeterminate frames

Creator:: Liu, David Cheng-Tso
Resource Type:: Masters Thesis
Full Text:: Bower, Typist ACKNOWLEDGM9TS Acknowledgments are due to G. W. Holcomb, Professor of Civil

Response of equipment in resilient-friction base isolated structures subjected to ground motion

Creator:: Lei, Kai-ming
Abstract:: The response of lightweight equipment in structures supported on resilient-friction-base isolators (R-FBI) subjected to harmonic ground motion and various earthquake ground motions is examined. The equipment-structure base system is modeled as a three degree-of-freedom discrete system (SDOF subsystems). An efficient semi-analytical numerical solution procedure for the determination of equipment response...
Resource Type:: Dissertation
Full Text:: ±ei2xtii a m s [co g cos(co g t.) + p sin(co g t.)] 2p2 co (e21P k21) 1 (mep2 e22P k22)Tc 2 [(mep

Fractal solutions to the long wave equations

Creator:: Ajiwibowo, Harman
Abstract:: The fractal dimension of measured ocean wave profiles is found to be in the range of 1.5-1.8. This non-integer dimension indicates the fractal nature of the waves. Standard formulations to analyze waves are based on a differential approach. Since fractals are non-differentiable, this formulation fails for waves with fractal characteristics....
Resource Type:: Dissertation
Full Text:: = (3.10) Ax I+u---I(h1+m)+(k+i72) (ôu ôu\ at ax) In the limit &*0, (3.10) becomes aI +u--- =g

Wave runup on high energy dissipative beaches and the prediction of coastal erosion

Creator:: Ruggiero, Peter
Resource Type:: Dissertation
Full Text:: Beaches and the Prediction of Coastal Erosion Abstract approved: William G. y cDougal Wave runup has

Dynamic response of flexible rotating machines subjected to ground motions

Creator:: Su, Wen-Chyi
Abstract:: Rotating machine play an important role in modern technology. Compressors in ventilating and cooling systems, pumps in power generation facilities, as well as high speed computer are all examples of flexible rotating machinery that must remain functional during and after a sever earthquake. Recent earthquakes have demonstrated that an aseismically...
Resource Type:: Masters Thesis
Full Text:: Machine Subjected to Ground Motions. Abstract approved Alan G. Hernried Rotating machine play an

Aseismic performance of a cable-stayed structure with decentralized H[infinity] control

Creator:: Chńg, Guan B.
Abstract:: The dissertation uses state-of-the-art structural engineering theories, in parallel with the modern and still-developing control theory of electrical engineering to mitigate the vibratory responses of a double-stayed bridge subjected to strong earthquake ground motions. First, a nonlinear finite element model of the double-stayed bridge subjected to non-uniform (multi-support) earthquake excitations...
Resource Type:: Dissertation
Full Text:: ), and v.9 is the vector of ground displacements (length g). Rearranging system matrices M, D, and K to

Evaluation of selected marginal aggregates stabilized with cement

Creator:: Chang, Chen
Abstract:: Coastal Oregon is deficient in quality construction aggregate. There is, however, an abundance of lower quality, or marginal aggregate available for construction purposes. The purpose of this report is to develop techniques for upgrading marginal aggregates with portland cement and methods for evaluating the relative performance of these stabilized materials...
Resource Type:: Masters Thesis
Full Text:: Cement. Abstract Approved: Redacted for Privacy Thesis Advisor, R. G. Hicks Coastal Oregon is

An evaluation of coastal Oregon's marginal aggregates

Creator:: Clemmons, Gregory H.
Abstract:: Coastal Oregon is deficient in quality construction aggregates. There is, however, an abundance of lower quality, or marginal, aggregate available for construction purposes. An evaluation of these marginal aggregates is the purpose of this paper. There are four classes of marginal rocks found on the Oregon Coast. Basalts, high in...
Resource Type:: Masters Thesis
Full Text:: aggregate (2,500 g) is placed in a steel canister with 1,000 ml of water. The canister is placed in the

Hinged floating breakwater : theory and experiments

Creator:: Leach, Patrick A.
Abstract:: An analytical model is developed to examine the response and efficiency of a vertical rigid, hinged, floating breakwater. The boundary value problem describing the flow field yields a well-posed Sturm-Liouville problem which is solved by separation of variables for the velocity potentials. The equation of breakwater motion about the breakwater...
Resource Type:: Masters Thesis
Full Text:: the guidance of Drs. William G. McDougal and Charles K. Sollitt in partial fulfill- ment of the

Test method to determine the degree of asphalt stripping from aggregates

Creator:: Boudreau, Richard L.
Abstract:: Moisture damage has long been recognized as one of the most critical factors influencing the performance of asphalt concrete (AC) pavements. This moistureinduced damage occurs from either the physical separation of the asphalt film from the aggregate or the softening of the asphalt binder within the AC mixture in the...
Resource Type:: Masters Thesis
Full Text:: Asphalt Stripping from Aggregates I Redacted for Privacy Abstract Approved: FL'k.1 PU1" R. G. Hicks

Simulation of coastal processes in a circular wave basin

Creator:: Katzev, David H.
Abstract:: The circular wave basin provides a means of physically modeling the nearshore without the typical problems associated with end walls. Three different coastal processes were examined to demonstrate the use of a spiral wavemaker in a circular wave basin. These were longshore currents, shear waves, and groin circulation. A beach...
Resource Type:: Masters Thesis
Full Text:: Research Lab. I would like to especially thank my major professor, William G. McDougal, for continually

Ocean wave-soil-caisson interaction

Creator:: Tsai, Yau-tang
Abstract:: Caissons on permeable seabeds have been designed and constructed for a variety of needs in coastal and offshore engineering. An evaluation of the adequacy of the foundation beneath the structure is required for an economic and safe design. To address this requirement, a two-dimensional analytical model of the foundation response...
Resource Type:: Dissertation
Full Text:: [Mynett and Mei (1982)] 0 p in which m - o 1-2v 0 0 T XX T yy 2(1+m o ) R' n o G (2.2.18a

Shrinkage and strength of steam cured Haydite masonry unit concrete mixes

Creator:: Peyton, Harold Ray
Resource Type:: Masters Thesis
Full Text:: s u s s s u u 54 Ste am Cur in g . . s u s s u s u u u u s s i u s i i s u 54 Shrinkage s u s s s

Evaluation of emulsified asphalt for use in Saudi Arabia

Creator:: Al-abdulwahhab, Hamad I.
Abstract:: Saudi Arabia currently contains 31000 km (18600 mi) of paved roads and 42000 km (25200 mi) of agricultural roads, with the prospect of more roads to be constructed. The low population (6 million) compared to the large area of the country (2,253,300 km², 900,000 mi²) coupled with the high cost...
Resource Type:: Dissertation
Full Text:: Arabia Abstract approved: Redacted for Privacy l R. G. Hicks Saudi Arabia currently contains 31000 km

An evaluation of dust abatement materials used in Region 6

Creator:: Langdon, Brian B.
Resource Type:: Masters Thesis
Full Text:: to his major professor, Dr. R. G. Hicks for his guidance, on and off the court, throughout the

Design of bridge and culvert waterway areas for runoff from small watersheds

Creator:: McReary, Ronald
Resource Type:: Masters Thesis
Full Text:: AREA ,s" I J AND VICINITY p CONTOUR INTERVAL 25FT I SCALE i IN 5160FT. DATUM I 5 M EAN S EA L EVE

Development of structural layer coefficients for open graded asphalt emulsion mixes

Creator:: Hatch, David Russell
Abstract:: This paper describes the development of structural layer coefficients for open graded asphalt emulsion surfacing layers which can be used with the AASHO pavement design method, as modified by the U. S. Forest Service, Region 6. A field survey conducted to document the history, performance and material characteristics of in-service...
Resource Type:: Masters Thesis
Full Text:: : Dr. R. G. Hicks This paper describes the development of structural layer coefficients for open

Reservoir design criteria

Creator:: Rosebraugh, Vernon Hart
Resource Type:: Masters Thesis
Full Text:: the record was made. H H ~ ~ 0 ; E g ~ ~-~ ~ z H ~~oi---+--~--+-~---+--4---~-4

Experimental research on the behavior and strength of large-scale steel gusset plates with sway-buckling response including effects of corrosion and retrofit options

Creator:: Hafner, Anthony G.
Abstract:: The collapse of the I-35W Bridge in Minneapolis, MN on August 1, 2007 brought into question the design and inspection of gusset plates in steel truss bridges. The experimental tests performed in this research study the sway-buckling strength and behavior of large-scale steel gusset plates in an isolated truss connection....
Resource Type:: Masters Thesis
Full Text:: OF THE THESIS OF Anthony G. Hafner for the degree of Master of Science in Civil Engineering

Dynamic response of an offshore structure to measured and simulated stochastic wave forces

Creator:: Grecco, Michael G.
Abstract:: The dynamic response of an offshore structure to measured and simulated stochastic wave forces is investigated. The theoretical nondeterministic analysis is performed in the frequency domain for a two-dimensional model. The ocean wave system is assumed to be a zero mean, stationary, ergodic Gaussian process described by a one-dimensional wave...
Resource Type:: Masters Thesis
Full Text:: and simulated stochastic wave forces AN ABSTRACT OF THE THESIS OF Michael G. Grecco for the degree

Aqueous-organic partition coefficients for Rn-222 and their application to Radon analysis by liquid scintillation methods

Creator:: Cantaloub, Michael G.
Abstract:: A method is described for determining the partition coefficient, K, for radon gas distributed between an aqueous phase and an organic solvent. The method uses sequential extractions of radon into equal volume aliquots of organic solvent. The radon-laden organic liquid is then counted on a liquid scintillation analyzer with alpha-beta...
Resource Type:: Masters Thesis
Full Text:: application to Radon analysis by liquid scintillation methods AN ABSTRACT OF THE THESIS OF Michael G

Owner's Role in Brownfield Remediation : The Brownfield Experts' Perspective

Creator:: Saberiyan, Amireh G.
Abstract:: Former industrial or commercial sites that have been left unused are typically referred to as brownfield sites, or simply, brownfields. Many communities have such properties that are abandoned, idle or underused. Despite public efforts to facilitate brownfields revitalization projects, the rate of remediation remains unexpectedly slow. Efforts to resolve this...
Resource Type:: Dissertation
Full Text:: Properties AN ABSTRACT OF THE DISSERTATION OF Amireh G. Saberiyan for the degree of Doctor of

Simulation of Heat Transfer Through Soil for the Investigation of Wildfire Impacts on Buried Utilities

Creator:: Richter, Edward G.
Abstract:: Wildland urban interface (WUI) communities in the Western United States have recently dealt with historic and devastating wildfires year after year. The fires have cost tens of billions in damage, burned tens of thousands of structures, displaced thousands of residents, and killed over one hundred people. The 2017 Tubbs fire...
Resource Type:: Capstone Project
Full Text:: Transfer Through Soil for the Investigation of Wildfire Impacts on Buried Utilities by Edward G

Geotechnical significance of poorly crystalline soils derived from volcanic ash

Creator:: Thrall, F. G.
Resource Type:: Dissertation
Full Text:: (specific 2surfaces) ranging from 104 to 400 m /g for allophane soils from the Caribbean, Japan and New

Beach Dune Subsurface Hydrodynamics and the Formation of Dune Scarps

Creator:: Bond, Hailey G.
Abstract:: The formation of beach scarps is a challenging morphodynamic phenomenon that the coastal community has yet to capture in coastal change models. Understanding scarp formation is crucial to accurately predicting coastal erosion and vulnerability during extreme events, as models without parameters for scarp formation and development severely underpredict total erosion...
Resource Type:: Masters Thesis
Full Text:: magnitude of partial momentary liquefaction events (color). (g) shows the progression of the scarp and the

Understanding Passenger Perception of Air Travel Safety Through Advanced Econometric Modeling

Creator:: Olsen, Aleah G.
Abstract:: Passenger security screening is a continuously evolving process and not much is known about how passengers perceive its effectiveness in keeping air travel safe. The provided thesis consists of two manuscripts that expand the literature on passenger perception of safety through the application of advanced econometric techniques. This thesis aims...
Resource Type:: Masters Thesis
Full Text:: THE THESIS OF Aleah G. Olsen for the degree of Master of Science in Civil Engineering presented on

Evaluation of system effects and structural load paths in a wood-framed structure

Creator:: Martin, Kenneth G.
Abstract:: The objective of this project was to develop an analytical model of a light-framed wood structure using a prevalent structural analysis computer program in order to evaluate system effects and define load paths within the structure, especially under extreme wind events. Simplified modeling techniques and material definitions were developed and...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Kenneth G. Martin for the

Observational study of buffered bike lane design implementation of roadway bicycling in Portland, Oregon

Creator:: Rios, Elizabeth A.
Abstract:: Bicyclists are one of the highest and most vulnerable road users. This is due to the higher likelihood of being seriously injured when involved in a crash. This research seeks to understand two different behavioral interactions of an implemented facility user: the motorist (secondary user) and bicyclist (primary user). The...
Resource Type:: Masters Thesis
Full Text:: Abstract approved: ______________________________________________________ Katharine M. Hunter-Zaworski

Stochastic analysis of a nonlinear ocean structural system

Creator:: Lin, Huan
Abstract:: Stochastic analysis procedures have been recently applied to analyze nonlinear dynamical systems. In this study, nonlinear responses, stochastic and/or chaotic, are examined and interpreted from a probabilistic perspective. A multi-point-moored ocean structural system under regular and irregular wave excitations is analytically examined via a generalized stochastic Melnikov function and Markov...
Resource Type:: Dissertation
Full Text:: . Appreciation is also given to other members of my committee: Prof. Robert M. Burton, Prof. John W. Leonard

Dynamic behavior of metal-plate-connected wood truss joints

Creator:: Kent, Scott M.
Abstract:: The objectives of this research were to evaluate the behavior of actual metal-plate-connected (MPC) tension-splice and heel wood truss joints under seismic loads from the Northridge earthquake (tension-splice joints only) and under loads from a large artificial earthquake (1.0 g's and 0.67 g's maximum horizontal and vertical accelerations, respectively). A...
Resource Type:: Masters Thesis

Structural Design and Testing of Mass Timber Concrete Composite Floor Solutions with Acoustic Interlayers

Creator:: Srivastava, Mohit Raja
Abstract:: Timber-concrete composite (TCC) solutions originated in the early twentieth century. There has been a renewed interest in TCC solutions in modern mass timber buildings, especially for floor systems. However due to lack of data, design standards, and code acceptance, TCC solutions require that new mass timber solutions be tested, and...
Resource Type:: Masters Thesis
Full Text:: to the grain (A. Dias et al., 2016; A. M. P. G. Dias et al., 2007; Higgins et al., 2017; Mirdad

Coupled dynamics of bouys and mooring tethers

Creator:: Idris, Krisnaldi
Abstract:: Time-domain models were developed to predict the response of a tethered buoy subject to hydrodynamic loadings. A coupled analysis of the interaction of a buoy and its mooring is included and three-dimensional response is assumed. External loadings include hydrodynamic forces, tethers tensions, wind loadings and the weight of both cable...
Resource Type:: Dissertation
Full Text:: and committee members; Dr. Adel Faridani, Dr. William G. McDougal and Dr. Lorin Davis. Dr. Reubeen

Load Path Investigation in a Light-Frame Wood House with Complex Geometry

Creator:: Holman, Justin D.
Abstract:: The objective of this study was to investigate load paths in an existing light-frame wood structure with complex geometry, using previously established computer modeling methods. The structural model is derived from an existing, multi-level residence located in Corvallis, Oregon. For the purpose of this study, the existing structure was simplified...
Resource Type:: Masters Thesis
Full Text:: …………………………………………..112 APPENDIX F: WIND LOAD INVESTIGATION…………………………….......................114 APPENDIX G

Stability of heterogeneous and anisotropic slopes determined by the compound logarithmic spiral limit equilibrium method

Creator:: Stockton, Ezra J.
Abstract:: The logarithmic-spiral (log-spiral) limit equilibrium procedure for slope stability analysis rigorously satisfies both force and moment equilibrium with a failure surface geometry formulated as a function of the soil’s angle of internal friction. Within the framework of limit equilibrium, this procedure has, in the past, been primarily limited to homogeneous...
Resource Type:: Masters Thesis
Full Text:: °, (e) no tension crack and (f) with tension crack for ϕm=20°, (g) no tension crack and (h) with

Ocean wave-soil-geotextile interaction

Creator:: McDougal, W. G. (William George)
Abstract:: Geotextiles are synthetic fabrics which may be substituted for graded aggregate to protect ocean and coastal structures from erosion and soil instability adjacent to the structure. They are commonly used as a filter and as a structural membrane between an undisturbed sediment surface below and an erosion resistant coarse aggregate...
Resource Type:: Dissertation
Full Text:: form of the discharge velocity into equation (2.2.6) yields -iw(l+C m ) 1 1 g [ gn - vp (2.2.8

Consolidation characteristics of sand-clay mixtures

Creator:: Anderson, Donald G. (Donald Gordon)
Abstract:: Combinations of cohesive and cohesionless soils are often encountered when evaluating the engineering properties of soils. The stress-volume characteristics of the mixed soil are found to vary according to the proportion of each component. If the cohesive soil composes more than a certain fraction of the material, the magnitude of...
Resource Type:: Masters Thesis
Full Text:: proportion by volume of nonclay, clay, and voids would remain the same. HT = g(e 1) 1 HT = g(e 2 ) 2

Cost-Benefit Evaluation of Energy-Efficient Building Strategies in Single-Family Affordable Housing

Creator:: Iliff, Helen M.
Abstract:: The goal of this thesis is to ease the adoption of energy-efficient (EE) building strategies for affordable homes in the United States (US). Low-wage earning households spend nearly three times the proportion of their gross annual income on home energy bills resulting in higher energy burden for them when compared...
Resource Type:: Masters Thesis

Nonlinear dynamic analysis of heavy timber frame structures including passive damping devices

Creator:: Eiden, Claudia M. T.
Abstract:: Engineering analysis of heavy timber structures under dynamic loads is generally lacking. Some literature suggests that heavy timber structures are stiffer than expected, but popular engineering opinion is to the contrary. In addition, prior research has shown that passive friction dampers can be used in timber structures for the intended...
Resource Type:: Masters Thesis

Evaluation of straw wattle placement and surficial slope stability

Creator:: Rikli, Anthony M.
Abstract:: Straw wattles are common erosion control devices used to trap sediment. This thesis studies the relationship of straw wattles on slope stability through a case study demonstrating their use on steep slopes (1.5H:1V) for the US20 highway realignment project. Several surficial slope failures have occurred on these fill slopes, often...
Resource Type:: Masters Thesis
Full Text:: THESIS OF Anthony M. Rikli for the degree of Master of Science in Civil Engineering presented on

Uranium and technetium bio-immobilization in intermediate-scale permeable reactive scale barriers

Creator:: Sapp, Mandy M.
Abstract:: Groundwater at Oak Ridge National Laboratory's Field Research Center (FRC) is contaminated with U(VI) and Tc(VII), has pH values as low as 3.3, and nitrate concentrations as high as 120 mM. The objective of this research was to determine if in-situ bio-immobilization is a viable treatment alternative for this water....
Resource Type:: Masters Thesis
Full Text:: . Similar results were obtained in two intermediate-scale ( 3 m long) physical models. Data from the high

Evaluation and Modification of a Thixotropic Fluid Model for Liquefaction Triggering with Application to Laboratory Tests and Lateral Spreading

Creator:: Brown, Tovey M.
Abstract:: Earthquake-induced liquefaction is a large contributor to damage observed following seismic events. Commonly observed damage consists of significant ground and structural failure due to the deformation of large volumes of soil due to soil liquefaction and lateral spreading. A significant focus of geotechnical seismic research concentrates on the development and...
Resource Type:: Capstone Project
Full Text:: OF Tovey M. Brown for the degree of Master of Science in Civil Engineering presented on May 28

Prototype-Scale Physical Model Study of Wave Attenuation by an Idealized Mangrove Forest of Moderate Cross-shore Width

Creator:: Kelty, Kiernan M.
Abstract:: The use of natural and nature-based features for coastal hazard mitigation, particularly emergent vegetation such as mangrove forests, have become increasingly popular. However, the protection that these systems can provide has not been fully quantified for engineering design, and the uncertainties in parameterized equations have not been fully defined. In...
Resource Type:: Masters Thesis
Full Text:: parameterizations from Ohira et al. (2013), where the diameter at breast height, DBH, was 0.1143 m, and the

The geochemical partitioning and bioavailability of trace metals in marine sediments

Creator:: Oakley, Stewart M.
Abstract:: Trace metals in the aquatic environment are generally concentrated on the surface of solid geochemical phases which eventually become incorporated into estuarine and marine sediments. The mechanism of trace metal concentration is believed to be adsorption with various geochemical phases such as hydrous metal oxides, clays, and organic matter. Metals...
Resource Type:: Dissertation
Full Text:: in organism, pg/g M o = mass of organism, g k e = rate const. for elimination, lit I (s

Uranium and technetium bio-immobilization in intermediate-scale physical models of an in situ bio-barrier

Creator:: Michalsen, Mandy M.
Abstract:: Metal and hydrogen ion acidity and extreme nitrate concentrations typical of Department of Energy (DOE) legacy waste sites pose formidable challenges to successful implementation of in situ bio-immobilization. Intermediate-scale (~ 2.5 m), flow through models of an in situ bio-barrier were constructed to investigate U and Tc removal from groundwater...
Resource Type:: Dissertation
Full Text:: ABSTRACT OF THE DISSERTATION OF Mandy M. Michalsen for the degree of Doctor of Philosophy in Civil

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