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Application Of Ce-Qual-W2 On Tigris River In Iraq, Muhanned Al-Murib 2014 Portland State University

Application Of Ce-Qual-W2 On Tigris River In Iraq, Muhanned Al-Murib

Civil and Environmental Engineering Master's Project Reports

The Tigris River is the eastern member of the two great rivers in Iraq. Two big rivers pass through Iraq, Mesopotamia. Tigris and Euphrates Rivers with their tributaries form a major river system in the Middle East. Four riparian countries, Turkey, Syria, Iran, and Iraq, share the Tigris River basin area and Iraq has the majority of this basin area. The total length of the Tigris is 1850 km from which 1418 km is within Iraq. A study area of 880 km from Mosul dam to Kut barrage is modeled using a water quality CE-QUAL-W2 model. CE-QUAL-W2 is a two-dimensional ...


Implementation Of A Sediment Transport Model For Ce-Qual-W2, Rachel Hanna 2014 Portland State University

Implementation Of A Sediment Transport Model For Ce-Qual-W2, Rachel Hanna

Civil and Environmental Engineering Master's Project Reports

The CE-QUAL-W2 model, developed by Portland State University, simulates water quality and flow. Recommendations to expand on this model and have it include sediment transport are implemented in this report. Existing one-, two-, and three-dimensional models are reviewed and assessed for their sediment transport methodology. A laterally (width) averaged sediment concentration model is developed as an Upwind Center Space Scheme using CE-QUAL-W2 data. The scheme includes a method to calculate scour for sediment concentration and results of the model are shown for a simulated branch of the Spokane River.


Applying Probabilistic Methods To The Nato Military Load Classification System For Bridges, Andrew J. MacDonald 2014 Western University

Applying Probabilistic Methods To The Nato Military Load Classification System For Bridges, Andrew J. Macdonald

University of Western Ontario - Electronic Thesis and Dissertation Repository

Military vehicles frequently use civilian bridges. The loading effects of military vehicles, both wheeled and tracked, are specific and different than those of civilian vehicles in normal traffic. Calibration to determine appropriate load factors for military loading of civilian bridges has not been fully performed and the corresponding levels of safety have not been quantified. This lack of calibration prevents the implementation of limit state design methods for military bridges and the evaluation bridges for military loading. This thesis quantifies probabilistically the single lane traffic load effects on interior girders of simply supported slab-on-girder bridges for three military vehicles in ...


Scale-Up Methodology For Bench-Scale Slurry Photocatalytic Reactors Using Combined Irradiation And Kinetic Modelling, Patricio J. Valades Pelayo 2014 Western University

Scale-Up Methodology For Bench-Scale Slurry Photocatalytic Reactors Using Combined Irradiation And Kinetic Modelling, Patricio J. Valades Pelayo

University of Western Ontario - Electronic Thesis and Dissertation Repository

The present study focuses on developing a predictive methodology to scale-up a slurry annular photoreactor using a TiO2 Degussa P25 from the bench-scale to a pilot-plant scale. The bench-scale photoreactor is a Photo-CREC-Water II, a 2.65 L internally-irradiated slurry annular photocatalytic reactor. The pilot-plant scale photoreactor is a Photo-CREC Water Solar Simulator, a 9.8 L pilot-plant photoreactor, externally irradiated by eight lamps.

The adopted methodology allows the independent validation of radiative and kinetic models avoiding cross-correlation issues. The proposed approach involves two Monte Carlo methods, to model the Radiative Transfer Equation (RTE) inside each photoreactor. With this ...


Seismic Performance Of Precast Girder-To-Cap Beam Connections Designed For Abc, Sri Sritharan, Justin Vander Werff, Robert Peggar, Ron Bromenschenkel 2014 Dordt College

Seismic Performance Of Precast Girder-To-Cap Beam Connections Designed For Abc, Sri Sritharan, Justin Vander Werff, Robert Peggar, Ron Bromenschenkel

Faculty Work

The behavior of critical connections between prefabricated elements in bridges utilizing accelerated bridge construction (ABC) methods continues to be of utmost interest. Some of these connections will experience excessively high demand in regions that are susceptible to high seismic load. This paper presents a large-scale experimental study that investigated seismic performance of the connection between precast concrete I-shaped girders and a concrete inverted-tee cap beam using two different details. The ability of the girder-to-cap connection to successfully resist positive moment and the corresponding shear under combined gravity and seismic effects was of particular interest. The effect of vertical seismic acceleration ...


Influence Of Water Chemistry Parameters On The Dissolution Rate Of The Lead (Ii) Carbonate Hydrocerussite, Caitlin SE Kushnir 2014 Western University

Influence Of Water Chemistry Parameters On The Dissolution Rate Of The Lead (Ii) Carbonate Hydrocerussite, Caitlin Se Kushnir

University of Western Ontario - Electronic Thesis and Dissertation Repository

This work has focused on the kinetic dissolution of the lead (II) carbonate hydrocerussite (Pb3(CO3)2(OH)2) under four pH conditions (7.5, 8, 9, 10), three dissolved inorganic concentrations (DIC; 10, 20, 50 mg C/L), and three initial hydrocerussite concentrations (10, 20, 50 mg/L) in batch experiments. Experiments were performed in at least duplicate to determine total dissolved lead dissolution curves at short time scales (hr.). All equilibrium dissolved lead concentrations were achieved in 40 minutes or less, and matched trends from previous studies; pH 7.5 and pH 10 corresponding to the ...


Miniature Cone Penetration Test On Loose Sand, Sepideh Damavandinejad Monfared 2014 Western University

Miniature Cone Penetration Test On Loose Sand, Sepideh Damavandinejad Monfared

University of Western Ontario - Electronic Thesis and Dissertation Repository

Considering the difficulties associated with preparing loose sand samples in large calibration chambers and wide area of research on the behavior of loose sands, miniature calibration chamber experiments are used to perform cone penetration tests on soils in different states. A miniature cone calibration chamber has been designed and developed in this study. Nineteen tests have been performed on Ottawa sand and the results are compared to the available data in the literature. The accuracy of the results is validated by comparing the results with the suggested rate for the cone resistance in sands in literature. More specifically, results are ...


Feedlot Manure Management Considerations Including Anaerobic Digestion Potential And Mineral Retention, Andrea K. Watson 2014 University of Nebraska - Lincoln

Feedlot Manure Management Considerations Including Anaerobic Digestion Potential And Mineral Retention, Andrea K. Watson

Theses and Dissertations in Animal Science

Three anaerobic digestion trials were conducted to evaluate methane production from feedlot manure. As organic matter content of manure decreased, degradation of manure and methane production also linearly decreased (P ≤ 0.02). Quality, or organic matter content of manure, had a greater impact on anaerobic digestion than diet (with and without distillers grains) fed to cattle. Minerals are concentrated in effluent removed from anaerobic digesters.

Knowing mineral retention within cattle allows for more accurate calculation of mineral excretion in manure. Three serial slaughter trials measured mineral retention in growing and finishing cattle. During a growing phase, beef cattle gaining 1 ...


Gis-Based Route Risk Assessment Of Hazardous Material Transport, Myungwoo Lee 2014 University of Nebraska - Lincoln

Gis-Based Route Risk Assessment Of Hazardous Material Transport, Myungwoo Lee

Civil Engineering Theses, Dissertations, and Student Research

The transportation of hazardous materials keeps increasing across the United States due to the growing consumption of goods and rising need for manufactured materials. Furthermore, concerns are mounting over the safe surface transportation of hazardous materials. Highways and rails are the most common modes of transport for hazardous materials, although the risk posed from highway transport of hazardous materials may be higher due to the fact that highways are public while rails are mostly private. The majority of hazardous material cargo is carried on the highway network by trucks. Due to possible adverse effects on human and animal populations in ...


Identification Of Groundwater Sources For Municipal Wells Using Geochemical Data On The Platte Alluvial Aquifer And Underlying Limestone At The Lincoln Water Well Field Near Ashland Nebraska, Juanita Cruz Torres 2014 University of Nebraska - Lincoln

Identification Of Groundwater Sources For Municipal Wells Using Geochemical Data On The Platte Alluvial Aquifer And Underlying Limestone At The Lincoln Water Well Field Near Ashland Nebraska, Juanita Cruz Torres

Dissertations & Theses in Earth and Atmospheric Sciences

Alluvial aquifer systems where pumping of municipal wells induces recharge from the adjacent river are the primary source of water for many cities. The city of Lincoln, NE has a primary water source in an alluvial aquifer adjacent to the Platte River. The Lincoln Water System manages the stream/aquifer system by using integrated models for a better understanding during periods of high stress such as a drought. The integrated models set the limestone aquifer as an impermeable boundary to understand the alluvial aquifer system without having a secondary water source. The limestone aquifer is permeable and the purpose of ...


Sci Cleveland: Inman Street Infrastructure Improvements, Drew B. Keller 2014 University of Tennessee, Knoxville

Sci Cleveland: Inman Street Infrastructure Improvements, Drew B. Keller

University of Tennessee Honors Thesis Projects

No abstract provided.


Cal Poly India Project, Derek Babine, Austen Hibler, Alex Hernandez 2014 California Polytechnic State University

Cal Poly India Project, Derek Babine, Austen Hibler, Alex Hernandez

Mechanical Engineering

This report documents the research, ideation, and development of a solution, implemented by the Cal Poly India Sanitation Team per the request of Mr. Harish Bhutani, to solve the problem of hazardous human waste management in poor villages in India. The sponsor envisioned a universal design that would give each household in those villages access to a private toilet system because the current solution is open defecation in water sources and farming fields. The initial constraints required the project be low cost, not use of electricity or water, have the ability to cater to an 8-10 person household, and be ...


Thickening Of Mature Fine Oil Sands Tailings, Shriful Islam 2014 Western University

Thickening Of Mature Fine Oil Sands Tailings, Shriful Islam

University of Western Ontario - Electronic Thesis and Dissertation Repository

The mature fine oil sands tailings (MFT) remain suspended in tailings disposal pond for decades because of the low sedimentation/consolidation rate. This study investigates the application of coagulation and electrokinetics to thicken, i.e., to increase the solid content of the MFT suspension. At first, the optimal ferric chloride concentration is identified as 350 mg/l in jar tests, under which the best thickening result is only 6.48% from an initial of 5% after 4 hours in cylinder coagulation tests. The electrokinetic thickening under an applied voltage gradient of 219 V/m reaches the final solid content of ...


Improved Bayesian Multi-Modeling: Integration Of Copulas And Bayesian Model Averaging, Shahrbanou Madadgar, Hamid Moradkhani 2014 Portland State University

Improved Bayesian Multi-Modeling: Integration Of Copulas And Bayesian Model Averaging, Shahrbanou Madadgar, Hamid Moradkhani

Civil and Environmental Engineering Faculty Publications and Presentations

Bayesian Model Averaging (BMA) is a popular approach to combine hydrologic forecasts from individual models, and characterize the uncertainty induced by model structure. In the original form of BMA, the conditional probability density function (PDF) of each model is assumed to be a particular probability distribution (e.g. Gaussian, gamma, etc.). If the predictions of any hydrologic model do not follow certain distribution, a data transformation procedure is required prior to model averaging. Moreover, it is strongly recommended to apply BMA on unbiased forecasts, whereas it is sometimes difficult to effectively remove bias from the predictions of complex hydrologic models ...


Conceptualization Of A Photovoltaic Powered Electrochromic Switching Of A Multifunctional Glazing, Aritra Ghosh, Brian Norton, Aidan Duffy 2014 Dublin Institute of Technology

Conceptualization Of A Photovoltaic Powered Electrochromic Switching Of A Multifunctional Glazing, Aritra Ghosh, Brian Norton, Aidan Duffy

Conference Papers

A multifunctional glazing system has the potential to reduce the heat loss through a window with control of solar heat gain and daylight. Thus it can reduce both the cooling load and heating load depending on weather, occupancy and building construction. A photovoltaic (PV) panel can be used to generate energy to change the colour of the electrochromic (EC) material. Battery storage system has been included to activate the EC behaviour using stored solar electricity. PV area and cost can thus be smaller. As a window can be placed in different sides of a building, incident solar irradiation on a ...


Path Flow Estimator For Planning Applications In Small Communities, Seungkyu Rya, Anthony Chen, H. Michael Zhang, Will Recker 2014 Utah State University

Path Flow Estimator For Planning Applications In Small Communities, Seungkyu Rya, Anthony Chen, H. Michael Zhang, Will Recker

Graduate Student Publications

This paper presents an alternative planning framework to model and forecast network traffic for planning applications in small communities, where limited resources debilitate the development and applications of the conventional four-step travel demand forecasting model. The core idea is to use the path flow estimator (PFE) to estimate current and forecast future traffic demand while taking into account of various field and planning data as modeling constraints. Specifically, two versions of PFE are developed: a base year PFE for estimating the current network traffic conditions using field data and planning data, if available, and a future year PFE for predicting ...


Concrete Pavement Mixture Design And Analysis (Mda): Evaluation Of The Fresh And Hardened Properties Of Concrete Mixtures Containing Permeability-Reducing Admixtures To Develop A Standard Testing Protocol, Ezgi Yurdakul, Peter Taylor, Halil Ceylan 2014 Iowa State University

Concrete Pavement Mixture Design And Analysis (Mda): Evaluation Of The Fresh And Hardened Properties Of Concrete Mixtures Containing Permeability-Reducing Admixtures To Develop A Standard Testing Protocol, Ezgi Yurdakul, Peter Taylor, Halil Ceylan

Civil, Construction and Environmental Engineering Technical Reports

Concrete durability may be considered as the ability to maintain serviceability over the design life without significant deterioration, and is generally a direct function of the mixture permeability. Therefore, reducing permeability will improve the potential durability of a given mixture and, in turn, improve the serviceability and longevity of the structure. Given the importance of this property, engineers often look for methods that can decrease permeability. One approach is to add chemical compounds known as integral waterproofing admixtures or permeability-reducing admixtures, which help fill and block capillary pores in the paste. Currently, there are no standard approaches to evaluate the ...


Nutrient Runoff Following Swine Manure Application, Seth J. Lamb 2014 University of Nebraska - Lincoln

Nutrient Runoff Following Swine Manure Application, Seth J. Lamb

Environmental Engineering Theses and Graduate Student Research

A field study was completed to compare the effects of land application methods, swine growth stage, and varying flow rates following the application of varying amounts of swine manure to 0.75-m by 2.00-m long plots. Three different manure sources were used to represent key different growth stages including growers, finishers, and sows and gilts. The different swine manures were applied in May and Jun 2011 to meet a 1 year nitrogen (N) requirement for corn. Three different land application methods were used to apply the swine manure, broadcast, incorporation, and injection. Runoff water quality was measured during three ...


A Privacy Risk Scoring Framework For Mobile, Jedidiah Spencer Montgomery 2014 Brigham Young University

A Privacy Risk Scoring Framework For Mobile, Jedidiah Spencer Montgomery

All Theses and Dissertations

Protecting personal privacy has become an increasingly important issue as computers become a more integral part of everyday life. As people begin to trust more personal information to be contained in computers they will question if that information is safe from unwanted intrusion and access. With the rise of mobile devices (e.g., smartphones, tablets, wearable technology) users have enjoyed the convenience and availability of stored personal information in mobile devices, both in the operating system and within applications.For a mobile application to function correctly it needs permission or privileges to access and control various resources and controls on ...


Reply To ‘Co2 Emissions From Crop Residue-Derived Biofuels’, Adam Liska, Haishun Yang, Matthew P. Pelton, Andrew E. Suyker 2014 University of Nebraska - Lincoln

Reply To ‘Co2 Emissions From Crop Residue-Derived Biofuels’, Adam Liska, Haishun Yang, Matthew P. Pelton, Andrew E. Suyker

Adam Liska Papers

The soil organic carbon (SOC) model that we used was parameterized with data from arable land under normal farming conditions in North America, Europe, Africa and Asia, but the equation is insensitive to changes in tillage, soil texture and moisture. The model has reasonable accuracy, however, in predicting changes in SOC, residue remaining and CO2 emissions from initial SOC, carbon inputs from residue, and daily temperature; the shoot-to-root ratio used in the geospatial simulation was 0.29 (that is, root carbon is 29% of total aboveground carbon), which did not underestimate carbon input to soil (Supplementary Figure 2 in ...


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