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Reservoir Simulations Of Low-Temperature Geothermal Reservoirs, Madhur Ganesh Bedre
Reservoir Simulations Of Low-Temperature Geothermal Reservoirs, Madhur Ganesh Bedre
Graduate Theses, Dissertations, and Problem Reports
The eastern United States generally has lower temperature gradients than the western United States. However, West Virginia, in particular, has higher temperature gradients compared to other eastern states. A recent study at Southern Methodist University by Blackwell et al. has shown the presence of a hot spot in the eastern part of West Virginia with temperatures reaching 150°C at a depth of between 4.5 and 5 km. This thesis work examines similar reservoirs at a depth of around 5 km resembling the geology of West Virginia, USA. The temperature gradients used are in accordance with the SMU study.;In order to …
A Parametric Study Of Microcellular Abs Foam Production In The Injection Molding Process, Adam Finniss
A Parametric Study Of Microcellular Abs Foam Production In The Injection Molding Process, Adam Finniss
Graduate Theses, Dissertations, and Problem Reports
Polymer foaming is an emerging technology with many possible benefits. In this work, acrylonitrile-butadiene-styrene (ABS) polymer was studied, due to its excellent structural properties, such as impact and flexural/tensile properties. Much research has been undertaken in the field of foaming; however, little information is available with a system as complex as ABS polymer, due to its multi-phase nature. By injection molding ABS polymer along with chemical foaming agents (CFA), information about the effect of process and material variables on the resultant physical properties of the foams could be gained.;This research focused on the effect of parameters such as the mold …
Studies Of The Initial Stage Of Silicon Carbide Growth On Silicon, Katherine Stewart Ziemer
Studies Of The Initial Stage Of Silicon Carbide Growth On Silicon, Katherine Stewart Ziemer
Graduate Theses, Dissertations, and Problem Reports
The lack of understanding concerning the initial stage of silicon carbide (SiC) growth on silicon (Si) substrates gives rise to heated debates on the growth mechanisms, the characteristics of the "optimal" initial layers, and the processing parameters necessary to produce high-quality cubic or beta silicon carbide (beta-SiC) on these initial layers. If the potential of beta-SiC as a semiconductor for electronic devices is to be realized, the growth of the initial layers (i.e. the initial stage of growth) must be understood and then controlled.;This dissertation presents results from the comparison of the initial stages of beta-SiC growth by gas source …
Electrochemical Treatment Of Metal-Bearing Aqueous Wastes Based On Novel Forms Of Carbon, Yue Xu
Electrochemical Treatment Of Metal-Bearing Aqueous Wastes Based On Novel Forms Of Carbon, Yue Xu
Graduate Theses, Dissertations, and Problem Reports
Electrochemical remediation is an economic approach for long-term clean-up of metal-bearing aqueous wastes because it provides a means of continuous, selective removal of metal contaminants and offers terminal processes for recovery of the metals. In this study, three forms of novel carbon material were tested as electrodes for the removal of heavy metals and radionuclides from aqueous wastes by electrodeposition and/or electrosorption.;Copper and lead ions in aqueous solution were effectively removed by electrodeposition on two of the carbon electrodes. The continuous, single-pass deposition through a small laboratory-scale cell removed 99% of copper and 83-88% of lead, respectively. On the other …
Durability Of Fiber-Reinforced Composite Wrap System For The Rehabilitation Of Concrete Structures, Sachin Kshirsagar
Durability Of Fiber-Reinforced Composite Wrap System For The Rehabilitation Of Concrete Structures, Sachin Kshirsagar
Graduate Theses, Dissertations, and Problem Reports
The objective of this research was the investigation of the durability of composite materials employed for rehabilitation of concrete bridge piers. Standard concrete cylinders (4&inches; x 8&inches; in dimensions) wrapped with 1 layer of glass fabric embedded in an epoxy resin matrix were used to simulate the field situation. Wet lay-up method was used to wrap the concrete cylinders where the epoxy also served the purpose of bonding the composite to the concrete. Specimens were subjected to six different accelerated aging conditions: (i) pH 9.4, 73°F; (ii) pH 12.4, 73°F; (iii) pH 12.4, 150°F; (iv) pH 7.0, 150°F; (v) Dry …