Index Catalog // ScholarsArchive@OSU

Multi-objective Optimization of Reservoir Operation Under Uncertainty with Robust and Flexible Decision Variables

Creator:: Hosseini, Parnian
Abstract:: Optimization of reservoir operation is involves various competing objectives for a scarce resource (water). To find the optimal operation of reservoirs, it is essential to consider multiple objectives simultaneously. There are various sources of uncertainty associated with the reservoir operation problem that should be considered as well. The overarching goal...
Resource Type:: Dissertation
Full Text:: bounds for first decision variable for all the Pareto solutions; and D) Flexible bounds for second

Trade-offs between geometric design standards and safety for low volume roads

Creator:: Kornsombut, Aram
Abstract:: Geometric design standards have not been developed specifically for low volume roads. Design standards and criteria are extrapolated from higher standard roadways that are often not relevant to low volume roads. Safety is a primary criterion used for selection of design standards along with economic, financial, social and environment factors....
Resource Type:: Masters Thesis
Full Text:: Geometric Design Standards and Safety for Low Volume Roads Abstract approved: Redacted for Privacy Dr. R

Computerized safety analysis technique for secondary highways

Creator:: Nichols, Kevin Scott
Abstract:: Evaluation of the safety hazards along a highway is usually performed at specific locations and on known hazards. But, it is also important to find any unrecognized hazards and their locations. Many factors contribute to accident potential, and the combined effect of several of them could produce a hazard that...
Resource Type:: Masters Thesis
Full Text:: ). 3. The distance of the obstacle from the edge of the pavement (d) - The probability that a vehicle

A method for programming maintenance on paved forest roads

Creator:: Chastain, Edward Oran
Abstract:: The development of a pavement management system for low-volume roads is a difficult task. There are many interrelated activities that must be considered, such as planning, design, construction, maintenance, and pavement evaluation. This paper addresses the evaluation and maintenance components of a pavement management system for low-volume roadways and provides...
Resource Type:: Masters Thesis
Full Text:: Abstract approved: Redacted for privacy Dr. R. D. La'on The development of a pavement management system

A method for quantifying macroporosity

Creator:: Vermeul, Vincent R.
Resource Type:: Masters Thesis
Full Text:: MACROPOROSITY. PART 1. METHODOLOGY V. R. Vermeul, J. D. Istok and J. L. Pikul ABSTRACT A method was developed

Modeling hydraulic dredge spoil fate

Creator:: Tseng, Ying-chuan
Abstract:: Hydraulic dredging is and most certainly will remain a primary means of maintaining and improving ship channels and for land reclamation in near-shore water. The study of which this thesis describes a part is intended to develop a method of predetermining the immediate disposition of sand spoils from hydraulic dredging...
Resource Type:: Masters Thesis
Full Text:: are due to Dr, J. R. Bell. and Dr. R. D. Layton for serving as committee members. It is not possible

Roughness and geometry effects of engineered log jams on 1-D flow characteristics

Creator:: Valverde, Rachelle S.
Abstract:: The re-introduction of large woody debris (LWD) into streams and rivers for stream restoration purposes is rapidly growing. Engineered log jams (ELJs) are man-made structures intended to mimic natural LWD structures, designed and installed to protect stream banks from erosion while increasing habitat diversity. Several studies have evaluated the flow...
Resource Type:: Masters Thesis
Full Text:: Roughness and Geometry Effects of Engineered Log Jams on 1-D

3-D finite element modeling in OpenSees for bridge live-load girder distribution factors

Creator:: Scoggins, Luke A.
Abstract:: A generalized, three-dimensional, finite element bridge model was created in order to efficiently and accurately assess live-load girder distribution factors for a variety of bridge types. This model shortens the time required by bridge analysts to develop individual finite element models for bridges of varying geometries. The creation of the...
Resource Type:: Masters Thesis
Full Text:: 22, 2007. Title: 3-D Finite Element Modeling in OpenSees for Bridge Live-Load Girder Distribution

Evaluation of cold in-place recycling of asphalt conrete pavements in Oregon

Creator:: Scholz, Todd
Abstract:: Significant use of cold in-place recycling (CIR) has occurred in Oregon since 1984 as an alternative to other rehabilitation techniques or to the reconstruction of distressed asphalt concrete (AC) pavements. Due to the initial success of the projects cold recycled during 1984-85, the Oregon Department of Transportation (ODOT) and Oregon...
Resource Type:: Masters Thesis
Full Text:: cD CA c+ co7:1 t.t) C (r) rn7C" 4./D Fa tig ue L if e, r ep et iti on s N 4: , O N 00 0 0

Evaluation of fabric reinforcement of the roadway structure

Creator:: Lavansiri, Direk
Abstract:: An evaluation of fabric reinforcement of the roadway structure is made. The study includes a parametric analy sis using layered elastic theory and a series of large scale model tests. The parametric. study analyzes the stresses and strains of roadway structures with a fabric layer between tna surface layer and...
Resource Type:: Dissertation
Full Text:: committee, Dr. J. R. Bell, Dr. W. L. Schroeder, Dr. R. D. Layton, Prof. H. Pritchett and Dr. H. Crew

Bond strength investigations and structural applicability of composite fiber-reinforced polymer (FRP) rebars

Creator:: Kachlakev, Damian I.
Abstract:: The composite FRP rebars research at Oregon State University was initiated in 1993 principally to develop a non-metallic hollow reinforcement. It was recognized that the tensile properties of such reinforcement are unquestionably superior to steel, but its performance in concrete could be problematic. The bond between FRP rebars and concrete...
Resource Type:: Dissertation
Full Text:: approved James R. Dindy The composite FRP rebars research at Oregon State University was initiated in

Permanent deformation characteristics of dense-graded mixes using asphalt pavement analyzer

Creator:: Sandoval-Gil, Jesus A.
Abstract:: The Asphalt Pavement Analyzer (APA) device was used to characterize the impact of various mix factors on the development of permanent deformation in dense-graded mixes given a standard compactive effort. Factors included two aggregate sizes, three VMA levels, two fines contents, three binder contents and four binder types. All specimens...
Resource Type:: Dissertation

Electron donor and chlorinated ethene effects on activity and community composition in anaerobic reductively dechlorinating consortia

Creator:: Sabalowsky, Andrew R.
Abstract:: This research focused on anaerobic transformation of trichloroethene (TCE), a groundwater contaminant. The mixed anaerobic Evanite culture (EV) was studied to determine community behavior and composition responses to different electron donors and chloroethene electron acceptors. The potential toxicity from high concentrations of TCE and its daughter product cis-1,2-dichloroethene (cDCE) was...
Resource Type:: Dissertation
Full Text:: DISSERTATION OF Andrew R. Sabalowsky for the degree of Doctor of Philosophy in Civil Engineering

Cement stabilization of poor quality national forest bedrock materials for road construction

Creator:: Huddleston, Ira J.
Resource Type:: Masters Thesis
Full Text:: - Appendix B Appendix C - Appendix D - Page List of References 98 - Summary of Questionnaire Responses

Chemical characterization of asphalt cements using chromatographic techniques : relation to rheological properties and field performance

Creator:: Thenoux, Guillermo
Abstract:: This dissertation presents the findings of a literature review and information regarding selection, implementation and development of a chemical composition procedure for asphalt cements. The chemical composition analysis selected was the Corbett-Swarbrick procedure standarized as ASTM D4124. The procedure is a selective adsorption / desorption (solid / liquid) chromatography which...
Resource Type:: Dissertation
Full Text:: Highway Planning and Research (HP&R) project funded through the U.S. Department of Transportation Federal

Are watershed management plans selected and preferred by stakeholders considering current climate conditions robust against climate change scenarios? A sensitivity study of stakeholders spatially-explicit preferences

Creator:: Cannady-Shultz, Kenneth R.
Abstract:: In the light of the changing climate, the importance of designing effective watershed management plans that are likely to be implemented is becoming ever more important. This research introduces a new concept, consensus, for incorporation into stakeholder-guided interactive optimization of watershed management plans. User preferences were mathematically simulated based upon...
Resource Type:: Masters Thesis

Engineering Services of Submerged Aquatic Vegetation (SAV): Investigation of the Land-Building and Energy-Attenuating Properties of SAV Habitats Across Spatial Scales

Creator:: Holzenthal, Elizabeth R.
Abstract:: Submerged aquatic vegetation (SAV) species, such as seagrasses, are highly valued in estuaries because of the many economic, ecological, and cultural services that they provide, including shelter for fisheries, minimizing water turbidity, and improving am-bient water quality. SAV can also alter its physical environment by attenuating wave and current velocities,...
Resource Type:: Dissertation
Full Text:: AN ABSTRACT OF THE DISSERTATION OF Elizabeth R

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

A kinetic model for dissolved gas transport in the presence of trapped gas

Creator:: Donaldson, Jeremy H.
Abstract:: Understanding the processes involved in the transport of dissolved gas plumes in groundwater aquifers is essential for comprehending the effect that these transport processes can have on site characterization and remedial design applications. Previous laboratory and field studies have indicated that dissolved gas transport in groundwater can be greatly affected...
Resource Type:: Masters Thesis
Full Text:: in the Presence of Trapped Gas. Abstract approved: Jonathan D. Istok Understanding the

Nonlinear finite element analysis of reinforced concrete structures strengthened with FRP laminates

Creator:: Chansawat, Kasidit
Abstract:: The Horsetail Creek (HC) bridge is an example of an Oregon bridge that was classified as structurally deficient and was not designed to withstand earthquake (EQ) excitations. A fiber-reinforced polymer (FRP) rehabilitation was performed on the HC bridge to increase flexural and shear capacities for traffic loads. However, a seismic...
Resource Type:: Dissertation

Prediction of low temperature cracking of asphalt concrete mixtures with thermal stress restrained specimen test results

Creator:: Kanerva, Hannele K.
Abstract:: Low temperature cracking is attributed to tensile stresses induced in an asphalt concrete pavement that develop when the pavement is subjected to a cold temperature. Cracking results in poor ride quality and a reduction in service life of the pavement. Low temperature cracking has been predicted by regression equations, mechanistic...
Resource Type:: Dissertation
Full Text:: members, Chris A. Bell, J. R. Bell, James D. Ingle, Vincent C. Janoo and James R. Lundy for their

Anaerobic reductive dechlorination of TCE and TCFE in TCE contaminated sediments : enhanced bioremediation and bioaugmentation

Creator:: Lee, Jae-Hyuk
Abstract:: This research focused on the enhanced reductive dechlorination of trichloroethene (TCE) and its surrogate, trichlorofluoroethene (TCFE), using two bioremediation methods in anaerobic conditions. Two anaerobic bioremediation studies were conducted to investigate the effects of microbial communities in the presence of different electron acceptors and donors during anaerobic reductive dechlorination of...
Resource Type:: Dissertation
Full Text:: . Environ. Sci. Technol. 1998, 32, 3598-3611 25. Dybas, M. J.; Hyndman, D. W.; Heine, R.; Tiedje, J

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:: /d) (m) ISOTROPIC Plexiglas 0.20 x 0.10 x 0.10 ID, SS, U, V No Br, "S r Silt-Sand-Silt Layering

Low volume grade crossing treatments for the Oregon high speed rail corridor

Creator:: Zaworski, David D.
Abstract:: This study defines the information gathering and communication and response needed for safety at highway-rail crossings. It examines technologies for low-cost, high-safety treatments for low volume highway crossings of higher speed (130-200 kph) rail. Crossing closure and consolidation is a necessary first step. Existing train control and crossing safety systems...
Resource Type:: Masters Thesis
Full Text:: my debt to Professors C. A. Bell, R. D. Layton, and K. M. Hunter-Zaworski for their unflagging

A study of the coagulation of kraft effluent by sea water

Creator:: Andrews, Ben Neal
Abstract:: The coagulation of effluent from the kraft pulping and papermaking process was investigated. The amount of material coagulated from saline mixtures of the effluent is determined as a function of time, salinity, kraft effluent concentration, and mixture pH. Individual sources of salinity include sea water and several different solutions of...
Resource Type:: Masters Thesis
Full Text:: d m a t e r i a l - m g / 1 Mixture Conditions 1. 20% kraft effluent by volume 2. 25 ppt

Mass transfer constraints on the feasability on in situ bioremediation of contaminated groundwater

Creator:: Fry, Virginia A., 1959-
Resource Type:: Dissertation
Full Text:: (f) 10-2 Y*. 2.7(r) o p.* = 10o 10-3 D.*. 0.1 10 Pore volumes o-4 10 -5 0 0.2 0.4 0.6 DISTANCE (x

A preliminary assessment of post-fire dissolved organic carbon concentrations in the McKenzie River basin, Oregon

Creator:: Hyatt, Charles
Abstract:: In recent decades, the occurrence of large, high severity wildfires has increased substantially in many parts of the world, including the western United States. These fires have the potential to impact water quality, aquatic ecosystems, and downstream communities for many decades. As such, it is increasingly important to understand the...
Resource Type:: Honors College Thesis
Full Text:: : _________________________________________________________ Kevin D. Bladon In recent decades, the occurrence of large, high severity wildfires has

Quantification of advection and dispersion in lateral subsurface flowpaths at the hillslope-scale

Creator:: Victory, Nichole I.
Abstract:: It is becoming increasingly important to understand fundamental hillslope-scale hydrological processes. Most hillslope-sale transport experiments have generally focused on conceptual findings or other aspect of flow behavior, rather than the quantification of the mass transport mechanisms of advection and dispersion. When the velocities have been quantified, dispersion has been mentioned...
Resource Type:: Masters Thesis
Full Text:: 1 1.2 0 500 1000 1500 Time from beginning Inj1 (hrs) % m a ss r e co v e re d a n d

Groundwater flow model for the lower Malheur Basin near Ontario, Oregon

Creator:: Walker, David S.
Abstract:: The shallow, poorly-confined, sand and gravel aquifer underlying the lower Malheur River basin is contaminated by nitrate and metabolites of the herbicide dimethyl tetrachloroterephthalate (DCPA), first detected in 1983 and 1985, respectively. The aquifer supplies water for the Ontario municipal water system, domestic and industrial uses, and irrigation. In response...
Resource Type:: Masters Thesis
Full Text:: 75 78 8 5000 625 Cooper-Jacob°) D t>2 min. 3600 450 Neumano) D t>30 min. 3600 462 Neuman R t/t,<10

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:: -immobilization in Intermediate-Scale Permeable Reactive Barriers Abstract approved: Jonathan D. Istok

Biodegradability and oxygen uptake studies on resuspended estuarine bottom sediments

Creator:: Touhey, Robert James
Abstract:: A study was conducted to determine the oxygen uptake rate of resuspended estuarine bottom sediments and the biodegradability of the organic matter released during resuspension. Oxygen uptake was measured on a Gilson Differential Respirometer and the percent biodegradability was calculated by determining the soluble organic carbon on a Beckman Carbonaceous...
Resource Type:: Masters Thesis
Full Text:: . Remington, R. D. and M. A. Schork. Statistics with applica- tions to the biological and health sciences

A procedure to identify and evaluate forest arterial and collector road networks

Creator:: Kehr, Richard H.
Abstract:: This thesis presents a procedure to identify and evaluate forest arterial and collector networks. The procedure identifies those decision criteria important in evaluating both the arterial and collector networks and the specific facilities identified on these networks. The procedure incorporates the decision criteria and results from network and facility analysis...
Resource Type:: Masters Thesis
Full Text:: R. D. Layton for his guidance, encouragement, and constructive criticism on this project. The

Watershed modeling at Yucca Mountain, Nevada

Creator:: Britch, Michael J.
Abstract:: Studies are currently underway to determine the suitability of Yucca Mountain in Nevada as the nation's first high-level nuclear waste repository. Values of net infiltration are required to determine pre-waste emplacement groundwater travel times and the performance of the repository as a waste containment system. The objective of this study...
Resource Type:: Masters Thesis
Full Text:: . P a g a n y W a s h W a t e r s h e d ; l o o k i n g u p s t r e a m n e a r w a t e r s

Evaluation of alternate surfacing systems for temporary and intermittent use roads

Creator:: Takallou, Mojtaba B.
Abstract:: The purpose of this study was to provide the USDA-Forest Service, Bureau of Land Management (BLM), and other agencies or industries that may deal with temporary and intermittent use roads with the necessary background information for the identification, economic evaluation, and selection of the alternate surfacing systems and to determine...
Resource Type:: Dissertation
Full Text:: Surfacing Systems for Temporary and Intermittent Use Roads. Abstract approved: Robert D. Lay The purpose

U(VI) transport in subsurface materials: is two-site, one-species modeling sufficient?

Creator:: Harrington, Stephanie J.
Abstract:: Uranium adsorption to Hanford sediment was studied for various pH, total inorganic carbon concentrations, and total U(VI) concentrations. Both batch and transport studies were done in an attempt to understand the adsorptive trend of U(VI) on Hanford sediment, and the changes in adsorption as both pH and total inorganic carbon...
Resource Type:: Masters Thesis
Full Text:: : Brian D. Wood Uranium adsorption to Hanford sediment was studied for various pH, total inorganic

Joint treatment of domestic sewage and ammonium perchlorate waste

Creator:: Cox, Lloyd Owen
Abstract:: The complexity of waste treatment presents a never ending challenge to those in the field of design and operation. The tremendous growth of this country has created serious waste treatment problems, which pose a serious threat to our water resources and our health. A reflection of this growth is the...
Resource Type:: Masters Thesis
Full Text:: h o, ,100 F{ r,{ !H o o +,'E 3oo D Tirne in Minutes Rotating Tube Median Residence Tirne.Figure

The performance of drivers with physical limitations at T-intersections

Creator:: Hunter-Zaworski, Katharine M.
Abstract:: The research examines the effect of restricted head and neck movement on driving performance as measured by decision time at T-intersections. The traffic safety and human factors literature was reviewed, and very little was found concerning drivers with physical limitations. T-intersections were selected for study because most accidents involving drivers...
Resource Type:: Dissertation
Full Text:: Limitations at T-Intersections Redacted for Privacy Abstract approved: Robert D. Layton" j The research

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:: : ____________________________________________ Jonathan D. Istok Metal and hydrogen ion acidity and extreme nitrate

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

A numerical model for the fate and transport of chlorinated phenols in groundwater

Creator:: Lee, Sang Bong
Abstract:: The objective of this study was to develop a numerical model for the movement and fate of chlorinated phenols in groundwater. In the first part, a numerical model for several different equilibrium and nonequilibrium sorption processes under isothermal conditions is developed for one-dimensional, steady-state water flow in soil columns. The...
Resource Type:: Dissertation
Full Text:: difference form of equation (1) is Cr 1 + Cik =D St cik++1.1 8x k +1_1, +1 / 5x 8x rik r,k /8)1/2 5x

The character and biological treatability of log pond waters

Creator:: Hoffbuhr, Jack Wayne
Abstract:: A study was conducted to determine the chemical nature and the biological treatability of log pond water. Various analyses including total solids, volatile solids, suspended solids, dissolved oxygen, pH, COD, BOD₅, BOD₂₀, total Kjeldahl nitrogen, nitrate nitrogen, phosphate, and PBI were performed on water samples from each of the four...
Resource Type:: Masters Thesis
Full Text:: changed to three days and five more days were d before s< r piing. This same procedure was followed each

Development of a priority rating system for highway safety improvements

Creator:: Iranitalab, Farhad
Abstract:: This thesis presents the procedure adopted to develop the priority rating system for highway safety improvements. Safety hazards are classified into four categories: (1) Railroad crossings, (2) Intersections, (3) Geometric-Related Hazards, and (4) Roadside Hazards. For each category of hazards, relationships are developed to obtain a hazard index and expected...
Resource Type:: Masters Thesis
Full Text:: of Geometric Factors Literature Review and Summary of Findings 147 Appendix D Roadside Hazards

The characterization and physical-chemical treatability of log pond waters

Creator:: Blanton, Guy Ivan
Abstract:: The treatability of waters from four log ponds in Oregon by physical and chemical treatment methods was investigated. Treatment processes included sand filtration, activated carbon contact and coagulation with aluminum sulfate. Preliminary studies were made at each log pond to determine the homogeneity of the pond water for sampling purposes...
Resource Type:: Masters Thesis
Full Text:: PrivacyAbstract approved:_ Frank D. Schaumburg The treatability of waters from four log ponds in Oregon by

The evaluation and selection of highway safety improvements for local jurisdictions

Creator:: Haq, Asif Jinnah
Abstract:: Many hazardous locations exist on our local and street highway systems. Such hazards contribute to the frequency and severity of traffic accidents. The elimination and mitigation of the hazards reduces accident frequency and severity, as measured by the number of fatalities, injuries and property damage resulting from the accidents. The...
Resource Type:: Masters Thesis
Full Text:: Highway Safety Improvements for Local Jurisdictions Abstract Approved: Redacted for privacy Dr. R. D

FATE group decision support system in transportation decision making

Creator:: Taekratok, Thaweesak
Abstract:: Two interesting challenges have been created in the traditional transportation planning process through recent adoption of more interactive roles by Federal, State and local transportation agencies and of those representing the communities being impacted by proposed transportation projects. First, the decision-making groups that formerly included solely transportation and related professionals...
Resource Type:: Dissertation

Pollutants leached from selected species of wood in log storage waters

Creator:: Graham, John LeRoy
Abstract:: A study was conducted to determine the quantity and character of substances leached from logs floating in water, and the rate of leaching of these substances. The species of wood studied were Douglas fir and ponderosa pine. The research was carried out in a controlled laboratory environment with log sections...
Resource Type:: Masters Thesis
Full Text:: SPECIES OF WOOD IN LOG STORAGE WATERS Abstract approved: rank D. Scha burg A study was conducted to

Multiphase flow in homogeneous and bedded porous media

Creator:: Schroth, Martin H.
Resource Type:: Dissertation
Full Text:: w..i0 ice r C N I 1H 913M A E I `O N IS S V d

A study of the quantity and distribution of bark debris resulting from log rafting

Creator:: Williamson, Kenneth J.
Abstract:: A study was conducted to determine the quantity and distribution of bark debris resulting from log rafting. Three distinct problems were studied: (I) the quantity of bark dislodged from the logs while being placed in the rivers and during transport in log rafts; (2) the percentage of the bark that...
Resource Type:: Masters Thesis
Full Text:: 50,51 18 a, b, Log Storage Area - Yaquina Bay 52 - 55 c, d 19 Log Storage Area - Yaquina Bay 56

BOD and toxicity of log leachates

Creator:: Atkinson, Sheridan William
Abstract:: A series of log storage experiments were conducted to determine whether leachates derived from water storage of logs are acutely toxic to fish. Log segments approximately 18 inches long and 16 inches in diameter were stored in tanks and held submerged for a period of 7 days. The holding water...
Resource Type:: Masters Thesis
Full Text:: provided much assistance in arranging the author's educational program. To Dr. Frank D. Schaumburg for

Evaluation of ground motion duration effects on the damage prediction of building and bridge structural and soil-structural systems

Creator:: Belejo, Andre
Abstract:: The role of ground motion duration on the seismic performance of civil engineering structures remains unclear. Thus, the role of earthquake strong ground motion duration is assessed in a three manuscript thesis, which includes: (1) assessment of the effects of ground motion duration on the seismic performance of a model...
Resource Type:: Dissertation
Full Text:: ri p t 2 B e le jo e t a l. ( 2 0 1 X ) (P re p a re d f o r S u b m is s io

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