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Articles 3841 - 3870 of 5557
Full-Text Articles in Oil, Gas, and Energy
Depositional And Sequence Stratigraphic Framework Of An Exposed Neoproterozoic Suprasalt Minibasin At Patawarta Diapir, Flinders Ranges, South Australia, Cora Evelyn Gannaway
Depositional And Sequence Stratigraphic Framework Of An Exposed Neoproterozoic Suprasalt Minibasin At Patawarta Diapir, Flinders Ranges, South Australia, Cora Evelyn Gannaway
Open Access Theses & Dissertations
Outcrops of mixed carbonate/siliciclastic strata comprise the Neoproterozoic (Marinoan) Wilpena Group at Patawarta diapir in the Flinders Ranges, South Australia. Patawarta diapir is a ramping allochthonous salt sheet flanked by suprasalt and subsalt minibasin strata. The stratal and structural attributes of the coeval minibasin fills afford a unique perspective on lateral and vertical salt migration and the impacts of salt-modified bathymetry in shallow marine depositional environments. This study documents the depositional and diagenetic facies, stratal thickness trends, and structural style and stratal geometries of the suprasalt minibasin fill and correlates it to the previously studied subsalt minibasin fill. The goal …
Hydropower, Mary Finley-Brook
Hydropower, Mary Finley-Brook
Geography and the Environment Faculty Publications
Hydropower dates back to the use of waterwheels to grind grain in Greece over two thousand years ago. Modern hydropower is a mature industry that has been used to generate electricity since the 1880s by capturing flowing water with a dam or other diversion structure and channeling it through a waterwheel or turbine. According to a 2012 report by the International Energy Agency, internationally dams are responsible for the largest amount of power generation from a renewable source; yet they have come under scrutiny as a result of environmental and social impacts perceived to be unsustainable (McCully 2001). Specific impacts, …
Renewable Energy, Mary Finley-Brook
Renewable Energy, Mary Finley-Brook
Geography and the Environment Faculty Publications
Renewable energy installations are expanding around the globe. Although there is excellent potential for achieving sustainability with multiple types of renewable energy, no energy source is a panacea. There are place-specific costs and benefits from every energy type, and the scale of production influences impacts. Industrial-scale renewable energy sources usually merge into existing energy grids and may often be connected to broader economic and political initiatives. Such as regional integration, development of new growth poles to stimulate economic expansion in areas without infrastructure, job creation, or trade expansion. With the exception of desert solar projects or initiatives in remote areas, …
A Decision Modeling For Phasor Measurement Unit Location Selection In Smart Grid Systems, Seung Yup Lee
A Decision Modeling For Phasor Measurement Unit Location Selection In Smart Grid Systems, Seung Yup Lee
Wayne State University Theses
As a key technology for enhancing the smart grid system, Phasor Measurement Unit (PMU) provides synchronized phasor measurements of voltages and currents of wide-area electric power grid. With various benefits from its application, one of the critical issues in utilizing PMUs is the optimal site selection of units.
The main aim of this research is to develop a decision support system, which can be used in resource allocation task for smart grid system analysis. As an effort to suggest a robust decision model and standardize the decision modeling process, a harmonized modeling framework, which considers operational circumstances of component, is …
Review Of Kentucky Oil And Gas Production, 2010, Brandon C. Nuttall
Review Of Kentucky Oil And Gas Production, 2010, Brandon C. Nuttall
Information Circular--KGS
The 2010 oil and natural gas production data by well published by the Kentucky Division of Oil and Gas were analyzed in response to proposed rules for limiting emissions from oil and natural gas facilities. Average daily production was determined for 5,044 oil wells and 12,940 natural gas wells. Of these wells, 955 are combined oil and natural gas producers. The overwhelming majority of Kentucky’s wells are marginal (stripper) wells and produce at rates of less than 10 barrels of oil (or barrels of oil equivalent) per day (bo/d) or 60 thousand cubic feet of natural gas per day (Mcf/d) …
Degradable Nanocomposite Preformed Particle Gel For Chemical Enhanced Oil Recovery Applications, Paul Tongwa
Degradable Nanocomposite Preformed Particle Gel For Chemical Enhanced Oil Recovery Applications, Paul Tongwa
Doctoral Dissertations
”This work presents two new materials that can be potentially used in conformance control to increase ultimate oil recovery from mature oilfields.
The first product is a degradable nanocomposite preformed particle gel for enhanced in-depth mobility control. Three different types of degradable nanocomposite preformed particle gels were synthesized. These three nanocomposite hydrogels were made using Laponite XLG, Calcium Montmorillonite, and Sodium Montmorillonite nanomaterials. It was observed that after degradation, Laponite XLG nanocomposite hydrogels had the highest post-degradation viscosity (4437 cp), followed by sodium nanocomposite hydrogels (129 cp), and lastly calcium nanocomposite hydrogels (75.5 cp). Thus, degradable Laponite XLG nanocomposite hydrogels …
Assessing The Energy Efficiency And Emissions Of A Vertical Closed-Loop Geothermal System At West Chester University, Jacqueline Wilson
Assessing The Energy Efficiency And Emissions Of A Vertical Closed-Loop Geothermal System At West Chester University, Jacqueline Wilson
Earth & Space Sciences Student Work
No abstract provided.
Application Of The Kalman Filter On Full Tensor Gravity Gradiometry Data Around The Vinton Salt Dome, Louisiana, Mahnaz Sepehrmanesh
Application Of The Kalman Filter On Full Tensor Gravity Gradiometry Data Around The Vinton Salt Dome, Louisiana, Mahnaz Sepehrmanesh
Theses and Dissertations--Earth and Environmental Sciences
Full tensor gravity (FTG) data are known for their high resolution but also for higher noise in its components due to the dynamic nature of the platform used for data acquisition. Although a review of the literature suggests steady increase in the success of gravity gradiometry, we still cannot take advantage of the full potential of the method, mostly because of the noise with the same amplitude and wavenumber characteristics as the signal that affects these data. Smoothing from common low pass filters removes small wavelength features and makes it difficult to detect structural features and other density variations of …
Natural Gas Service Expansion Criteria In Maine, Kevin Mahaffey
Natural Gas Service Expansion Criteria In Maine, Kevin Mahaffey
Muskie School Capstones and Dissertations
The purpose of this study is to gain an understanding of the framework used by Maine’s natural gas utilities in making decisions to expand natural gas infrastructure and service to new customers,and then to apply this knowledge in an attempt to identify municipalities that are potentially attractive candidates for service expansion within Maine.
This study is not a precise model for gas utilities, but is meant rather to be a reconnaissance study for finding viable and attractive candidates for service.This study was limited both by resources and the inaccessibility of proprietary information.
The Effect Of Annealing On Amorphous Silicon Based Solar Photovoltaic Thermal System (Pv/T) And Appropriate Global Dispatch Strategies, Joseph Rozario
The Effect Of Annealing On Amorphous Silicon Based Solar Photovoltaic Thermal System (Pv/T) And Appropriate Global Dispatch Strategies, Joseph Rozario
Dissertations, Master's Theses and Master's Reports - Open
Previous work has shown that high-temperature short-term spike thermal annealing of hydrogenated amorphous silicon (a-Si:H) photovoltaic thermal (PVT) systems results in higher electrical energy output. The relationship between temperature and performance of a-Si:H PVT is not simple as high temperatures during thermal annealing improves the immediate electrical performance following an anneal, but during the anneal it creates a marked drop in electrical performance. In addition, the power generation of a-Si:H PVT depends on both the environmental conditions and the Staebler-Wronski Effect kinetics. In order to improve the performance of a-Si:H PVT systems further, this paper reports on the effect of …
Characterizing And Improving Production Of Fermentable Sugars And Co-Products From A Forest Product Industry Wastewater Stream, Jifei Liu
Dissertations, Master's Theses and Master's Reports - Open
Hardboard processing wastewater was evaluated as a feedstock in a bio refinery co-located with the hardboard facility for the production of fuel grade ethanol. A thorough characterization was conducted on the wastewater and the composition changes of which during the process in the bio refinery were tracked. It was determined that the wastewater had a low solid content (1.4%), and hemicellulose was the main component in the solid, accounting for up to 70%. Acid pretreatment alone can hydrolyze the majority of the hemicellulose as well as oligomers, and over 50% of the monomer sugars generated were xylose. The percentage of …
Review Of Factors Affecting Sustainability In The Universities, Hosna Ajilian
Review Of Factors Affecting Sustainability In The Universities, Hosna Ajilian
Dissertations, Master's Theses and Master's Reports - Open
Purpose – The focus of this research is to find out a meaningful relationship between adopting sustainability practices and some of the characteristics of institutions of higher education (IHE). IHE can be considered as the best place to promote sustainability and develop the culture of sustainability in society. Thus, this research is conducted to help developing sustainability in IHE which have significant direct and indirect impact on society and the environment.
Design/methodology/approach – First, the sustainability letter grades were derived from “Greenreportcard.org” which have been produced based on an evaluation of each school in nine main categories including: Administration, Climate …
The Domestic Natural Gas Shortage In China, Ting Guo
The Domestic Natural Gas Shortage In China, Ting Guo
Dissertations, Master's Theses and Master's Reports - Open
This thesis analyzes the domestic shortage in the Chinese natural gas market. Both the domestic supply and demand of natural gas are growing fast in China. However, the supply cannot catch up with the demand. Under the present pricing mechanism, the Chinese natural gas market cannot get the equilibrium by itself. Expensive imports are inadequate to fill the increasing gap between the domestic demand and supply. Therefore, the shortage problem occurs. Since the energy gap can result in the arrested development of economics, the shortage problem need to be solved. This thesis gives three suggestions to solve the problem: the …
Electrocatalytic Processing Of Renewable Biomass-Derived Compounds For Production Of Chemicals, Fuels And Electricity, Le Xin
Dissertations, Master's Theses and Master's Reports - Open
The dual problems of sustaining the fast growth of human society and preserving the environment for future generations urge us to shift our focus from exploiting fossil oils to researching and developing more affordable, reliable and clean energy sources. Human beings had a long history that depended on meeting our energy demands with plant biomass, and the modern biorefinery technologies realize the effective conversion of biomass to production of transportation fuels, bulk and fine chemicals so to alleviate our reliance on fossil fuel resources of declining supply. With the aim of replacing as much non-renewable carbon from fossil oils with …
Assessing The Viability Of Converting Indiana's Energy Framework To Renewable Sources By 2050, Lincoln Barlow 14
Assessing The Viability Of Converting Indiana's Energy Framework To Renewable Sources By 2050, Lincoln Barlow 14
Honor Scholar Theses
Conflicting views exist with regard to the feasibility of transitioning the world from a dependence on fossil fuel energy production to a completely renewable, emission-free energy climate. Findings show that the potential for Indiana to match its current energy production solely utilizing renewable energy capabilities existing on the Indiana landscape is available using a calculated combination of available resources from available analytical data. The annual required energy production, phased in gradually through the year 2050 and excluding the transportation sector, would consist of ~61% onshore wind energy (443,900 GWh), ~1% offshore wind energy (8,129 GWh), ~1% hydroelectric power (6,833 GWh), …
Natural Selectivity Of Nickel And Vanadium In Crude Oil, Olienka P. De La O Fernandez
Natural Selectivity Of Nickel And Vanadium In Crude Oil, Olienka P. De La O Fernandez
Open Access Theses & Dissertations
Nickel and Vanadium have always been found in crude oil all around the world. The metal content is found mainly in porphyrin structures in the asphaltene fraction of the petroleum. In order to determine the reason for this natural preference, a set of experiments testing thermodynamics, kinetics, and other factors were performed. Candidate metalloporphyrins containing Vanadyl, Chromium, Iron, Nickel, Copper and Zinc were analyzed through chemical reactions characterized using Silica Column Chromatography, HPLC, MS and UV-Visible. Theoretical analysis of the stability of metalloporphyrins was conducted using DFT/NRLMOL for computational calculation. The analysis of all factors leads us to conclude that …
Alkali Promoted Molybdenum (Iv) Sulfide Based Catalysts, Development And Characterization For Alcohol Synthesis From Carbon Monoxide And Hydrogen, Belinda Delilah Molina
Alkali Promoted Molybdenum (Iv) Sulfide Based Catalysts, Development And Characterization For Alcohol Synthesis From Carbon Monoxide And Hydrogen, Belinda Delilah Molina
Open Access Theses & Dissertations
For more than a century transition metal sulfides (TMS) have been the anchor of hydro-processing fuels and upgrading bitumen and coal in refineries worldwide. As oil supplies dwindle and environmental laws become more stringent, there is a greater need for cleaner alternative fuels and/or synthetic fuels. The depletion of oil reserves and a rapidly increasing energy demand worldwide, together with the interest to reduce dependence on foreign oil makes alcohol production for fuels and chemicals via the Fischer Tropsch synthesis (FTS) very attractive. The original Fischer-Tropsch (FT) reaction is the heart of all gas-to-liquid technologies; it creates higher alcohols and …
Growth And Analysis Of Micro And Nano Cdte Arrays For Solar Cell Applications, Brandon Adrian Aguirre
Growth And Analysis Of Micro And Nano Cdte Arrays For Solar Cell Applications, Brandon Adrian Aguirre
Open Access Theses & Dissertations
CdTe is an excellent material for infrared detectors and photovoltaic applications. The efficiency of CdTe/CdS solar cells has increased very rapidly in the last 3 years to ~20% but is still below the maximum theoretical value of 30%. Although the short-circuit current density is close to its maximum of 30 mA/cm2, the open circuit voltage has potential to be increased further to over 1 Volt. The main limitation that prevents further increase in the open-circuit voltage and therefore efficiency is the high defect density in the CdTe absorber layer. Reducing the defect density will increase the open-circuit voltage above 1 …
Numerical Investigation Of Impact Of Relative Humidity On Droplet Accumulation And Film Cooling, Luz Irene Bugarin
Numerical Investigation Of Impact Of Relative Humidity On Droplet Accumulation And Film Cooling, Luz Irene Bugarin
Open Access Theses & Dissertations
During the summer, high inlet temperatures affect the power output of gas turbine systems. Evaporative coolers have gained popularity as an inlet cooling method for these systems. Wet compression has been one of the common evaporative cooling methods implemented to increase power output of gas turbine systems due to its simple installation and low cost. This process involves injection of water droplets into the continuous phase of compressor to reduce the temperature of the flow entering the compressor and in turn increase the power output of the whole gas turbine system. This study focused on a single stage rotor-stator compressor …
Sedimentologic, Stratigraphic, And Diagenetic Analysis Of Microbialite-Bearing Lacustrine Rift Sequence Within The Lower Cretaceous Yucca Formation, Indio Mountains, West Texas, Xiaowei Li
Open Access Theses & Dissertations
This study sedimentologically, stratigraphically, and diagenetically analyzed strata of the upper member of the Lower Cretaceous Yucca Formation in the Indio Mountains, West Texas in order to develop an outcrop-based analog model for similar facies that form major hydrocarbon reservoirs in the Pre-salt rift basins of the South Atlantic margin. The lower Cretaceous strata of the Indio Mountains were deposited in rift basins that formed along the eastern margin of the Chihuahua Trough under similar greenhouse climate conditions as the South Atlantic basins.
Eleven lithofacies are recognized from the upper member of the Yucca Formation to the base of the …
Experimental Investigation Of Syngas Flame Stability Using A Multi-Tube Fuel Injector In A High Pressure Combustor, Sergio Elzar Maldonado
Experimental Investigation Of Syngas Flame Stability Using A Multi-Tube Fuel Injector In A High Pressure Combustor, Sergio Elzar Maldonado
Open Access Theses & Dissertations
Over 92% of the coal consumed by power plants is used to generate electricity in the United States (U.S.). The U.S. has the world's largest recoverable reserves of coal, it is estimated that reserves of coal will last more than 200 years based in current production and demand levels. Integrated Gasification Combined Cycle (IGCC) power plants aim to reduce the amount of pollutants by gasifying coal and producing synThesis gas. SynThesis gas, also known as syngas, is a product of coal gasification and can be used in gas turbines for energy production. Syngas is primarily a mixture of hydrogen and …
A Long- And Short-Run Analysis Of Electricity Demand In Ciudad Juarez, Ericka Cecilia Mendez
A Long- And Short-Run Analysis Of Electricity Demand In Ciudad Juarez, Ericka Cecilia Mendez
Open Access Theses & Dissertations
Economic growth and appliance saturation are increasing electricity consumption in Mexico. Annual frequency data from 1990 to 2012 are utilized to develop an error correction framework that sheds light on short- and long-run electricity consumption behavior in Ciudad Juarez, a large Mexican metropolitan economy at the border with the United States. The results for this study reveal that electricity is an inelastic normal good in this market. Moreover, natural gas is found to be a weak complement to electricity. With regards to the customer base in this urban economy, population, employment, and income exercise positive and statistically significant impacts on …
Design And Evaluation Of A High Temperature/Pressure Supercritical Carbon Dioxide Direct Tubular Receiver For Concentrating Solar Power Applications, Jesus Daniel Ortega
Design And Evaluation Of A High Temperature/Pressure Supercritical Carbon Dioxide Direct Tubular Receiver For Concentrating Solar Power Applications, Jesus Daniel Ortega
Open Access Theses & Dissertations
This work focuses on the development of a solar power thermal receiver for a supercritical-carbon dioxide (sCO2), Brayton power-cycle to produce ~1 MWe. Closed-loop sCO2 Brayton cycles are being evaluated in combination with concentrating solar power to provide higher thermal-to-electric conversion efficiencies relative to conventional steam Rankine cycles. High temperatures (923 - 973 K) and pressures (20 - 25 MPa) are required in the solar receiver to achieve thermal efficiencies of ~50%, making concentrating solar power (CSP) technologies a competitive alternative to current power generation methods. In this study, the CSP receiver is required to achieve an outlet temperature of …
Residential Electricity Demand In Arkansas, Ileana M. Resendez
Residential Electricity Demand In Arkansas, Ileana M. Resendez
Open Access Theses & Dissertations
This study analyzes residential electricity demand in Arkansas. Explanatory variables utilized include real per capita income, residential electricity price, heating degree days, cooling degree days, and residential natural gas price. The results indicate that the income effect dominates the substitution effect given a real personal income increase and a decline in real electricity rates in the state of Arkansas during the period under study.
Energy Efficiency Analysis And Optimization For Mobile Platforms, Grace Metri
Energy Efficiency Analysis And Optimization For Mobile Platforms, Grace Metri
Wayne State University Dissertations
The introduction of mobile devices changed the landscape of computing. Gradually, these devices are replacing traditional personal computer (PCs) to become the devices of choice for entertainment, connectivity, and productivity. There are currently at least 45.5 million people in the United States who own a mobile device, and that number is expected to increase to 1.5 billion by 2015.
Users of mobile devices expect and mandate that their mobile devices have maximized performance while consuming minimal possible power. However, due to the battery size constraints, the amount of energy stored in these devices is limited and is only growing by …
Development Of Silicon-Based Anodes And In-Situ Characterization Techniques For Lithium Ion Batteries, Jinho Yang
Development Of Silicon-Based Anodes And In-Situ Characterization Techniques For Lithium Ion Batteries, Jinho Yang
Wayne State University Dissertations
Development of lithium ion batteries (LIBs) with higher capacity has been booming worldwide, as growing concerns about environmental issues and increasing petroleum costs. The demands for the LIBs include high energy and power densities, and better cyclic stability in order to meet a wide range of applications, such as portable devices and electric vehicles. Silicon has recently been explored as a promising anode material due to its low discharge potential (<0.4 V) and high specific capacity (4200 mAh g-1). The capacity of silicon potentially exceeds more than 10 times of the conventional graphite anode (372 mAh g-1). However, the silicon anode experiences huge volume …0.4>
Social Consequence, Stakeholder Influence, And Resource Needs For Marcellus Shale Communities, Mary Kathleen Gorman
Social Consequence, Stakeholder Influence, And Resource Needs For Marcellus Shale Communities, Mary Kathleen Gorman
Walden Dissertations and Doctoral Studies
The process of natural gas recovery by horizontal drilling and hydraulic fracturing, known as fracking, is a major scientific advance in unconventional energy development. Attention has largely been focused on its economic advantages and potential negative environmental repercussions, while less consideration given to its social dimensions. The purpose of this study was to explore the social consequences of fracking for communities in the Appalachian Basin's Marcellus shale. Research questions focused on the role of stakeholders and the resource needs of localities in shaping public policy. This study was guided by the tenets of the Boomtown theory along with key issues …
Sustainability Efforts Of One Oil Company In Niger Delta Of Nigeria, Charles Afam Anosike
Sustainability Efforts Of One Oil Company In Niger Delta Of Nigeria, Charles Afam Anosike
Walden Dissertations and Doctoral Studies
Environmental degradation and socioeconomic dilemma continue to stigmatize oil production in the Niger Delta of Nigeria. Sustainability programs of oil companies often determine the improvement of living conditions in the region. This explanatory qualitative case study, guided by systems thinking theory and sustainable value framework, explored practitioners' perceptions of sustainability programs to identify its impact on business and the host communities. The research question was designed to address how sustainability efforts of a single oil company in the Niger Delta contributed to the business performance and the livelihood of the local people. Research data were gathered from a sample of …
Testing Of Two Novel Semi-Implicit Particle-In-Cell Techniques, Trenton J. Godar
Testing Of Two Novel Semi-Implicit Particle-In-Cell Techniques, Trenton J. Godar
Browse all Theses and Dissertations
PIC (Particle-in-cell) modeling is a computational technique which functions by advancing computer particles through a spatial grid consisting of cells, on which can be placed electric and magnetic fields. This method has proven useful for simulating a wide range of plasmas and excels at yielding accurate and detailed results such as particle number densities, particle energies, particle currents, and electric potentials. However, the detailed results of a PIC simulation come at a substantial cost of computational requirement and the algorithm can be susceptible to numerical instabilities. As processors become faster and contain more cores, the computational expense of PIC simulations …
Improving Methods For The Successful Establishment Of Switchgrass, Whitney Marie Monin
Improving Methods For The Successful Establishment Of Switchgrass, Whitney Marie Monin
Theses and Dissertations--Plant and Soil Sciences
Our research investigated whether priming switchgrass seeds with water or ethephon would increase stand establishment in the field. ‘Alamo’ seed germinated faster and grew taller than ‘Cave-in-Rock.Seeds primed for six days in water or for one day in ethephon 10 mM had the greatest seedling densities. In growth chamber environments seed priming were tested to hasten germination velocity. Seeds primed for two, four or six days in water germinated faster than unprimed seeds. Ethephon treatments reduced overall germination and germination velocity. Accent and Accent Q herbicides containing nicosulfuron are used to control weeds. To test ‘Alamo’ sensitivity to these herbicides, …