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Articles 1 - 30 of 56
Full-Text Articles in Engineering
The Critical Difference Seismic Design Can Make For A Reinforced Concrete Building Located In Oxford, Mississippi, Naim Daghmash
The Critical Difference Seismic Design Can Make For A Reinforced Concrete Building Located In Oxford, Mississippi, Naim Daghmash
Honors Theses
The Senior Design course at the University of Mississippi requires the completion of a capstone project. One part of the capstone project is a complete structural design of the NOLA, an ongoing construction in the city of Oxford in Mississippi. The course requires the NOLA to be designed according to gravity loads, meaning the forces act in the downward direction towards the earth’s surface. Some loading mechanisms that could occur in a different direction than gravity are seismic loads, which are earthquake-generated loads. I was not required by my instructors to consider the effect of an earthquake on the structural …
A Modular Data Acquisition Device And Biosignal Amplifier Design, Erin Bratu
A Modular Data Acquisition Device And Biosignal Amplifier Design, Erin Bratu
Honors Theses
The purpose of this research project is to revise a previous design of a modular data collection device and to develop a biosignal amplifier for use in EEG research. The primary goals of the device redesign were to address the challenges identified at the conclusion of the previous research and to either reaffirm or update various aspects of the implementation – primarily the main components that make up the device. The amplifier circuitry is designed to provide both amplification of the input signals and preliminary filtering of undesirable noise artifacts caused by common environmental sources. Both the collection device and …
Equivalent Annual Operating Cost Of Reactors In A Discrete Optimized Styrene Process, S Arizona Morgan-Harris
Equivalent Annual Operating Cost Of Reactors In A Discrete Optimized Styrene Process, S Arizona Morgan-Harris
Honors Theses
Beginning in the fall semester, I was a member of a team that simulated and optimized a styrene production process in Microsoft Excel. After the base case was simulated, parametric and topological optimizations were completed. The optimizations had to be completed in a certain order that starts with the reactor section, then move to the separation section, heat recovery section, heating/cooling utilities section, and ends with the water and effluent treatment section. During this project, the first three sections were explored. Optimizing the base case was completed by making these changes to see how they increased the net present value …
Methods Utilizing The Phenomena Of Light Scattering To Measure Microscopic Aluminum Oxide Particle Size In Both Solution And Turbulent Air Flow, Lawrence Edward Deese
Methods Utilizing The Phenomena Of Light Scattering To Measure Microscopic Aluminum Oxide Particle Size In Both Solution And Turbulent Air Flow, Lawrence Edward Deese
Honors Theses
Lawrence Deese: Methods Utilizing the Phenomena of Light Scattering to Measure Microscopic Aluminum Oxide Particle Size in Both Solution and Turbulent Air Flow The purpose of this research project was to measure microscopic aluminum oxide (alumina) particle size both in solution and in air flow. Experimentally, the process of sizing microscopic particles is technically challenging. Two methods were used for measuring the sizes of 4 different manufacturer labeled aluminum oxide particles sizes. The first method was using Dynamic Light Scattering analyzed by a LS Spectrometer to measure the alumina particle size while suspended in solution. The second method was using …
How Moisture Content Levels And Packing Density In Soil Affect Crude Oil Spreads, Shaylin N. Williams
How Moisture Content Levels And Packing Density In Soil Affect Crude Oil Spreads, Shaylin N. Williams
Venture: The University of Mississippi Undergraduate Research Journal
Crude oil spills are one of the most destructive disasters that can occur, and they are extremely difficult to recover from. Many studies focus on what can be done to clean these crude oil spills, but more research should be focused on means of prevention. Currently, very little is known about how the moisture content levels and the packing efficiency of soil can affect an oil spill. These two factors alone can offer a variety of information to environmental agencies, manufacturers, and refineries. Through utilization of a chemical engineering lab, a recording mechanism, and ImagePro software, data was collected and …
The Chevron Bunionectomy For Moderate To Severe Deformity: Effects Of Varying Procedural Factors In Hallux Valgus Correction, Hunter Reed Harrison
The Chevron Bunionectomy For Moderate To Severe Deformity: Effects Of Varying Procedural Factors In Hallux Valgus Correction, Hunter Reed Harrison
Honors Theses
With growing popularity of minimally invasive surgery, the Chevron bunionectomy has been investigated for use in moderate to severe hallux valgus. This study investigates procedural components of lateral release, fixation, and 2nd digit procedures to evaluate effects on outcome. 109 out of 325 patients of a distal Chevron osteotomy with a minimum preoperative IMA of 15° completed the phone survey rating satisfaction and pain levels. Patients were contacted an average of 5.2 years postoperatively. 83% of patients reported being extremely to very satisfied with their outcome. Only 9 patients complained of current foot pain greater than or equal to 5 …
Investigation Of Fouling Mechanisms On Ion Exchange Membranes During Electrolytic Separations, Matthew James Edwards
Investigation Of Fouling Mechanisms On Ion Exchange Membranes During Electrolytic Separations, Matthew James Edwards
Honors Theses
The global water crisis is a major problem in our developing world due to the increasing growth of our global population, the depletion of natural water resources, and the continuing contamination of existing water resources as a result of industrialization. Membrane separation is a potential solution for these issues. Electrodialysis (ED) is a separation process which employs membranes to separate inorganic and organic substances. This study investigated how different fouling agents influenced membrane surface characteristic and separation efficiency within an electrodialysis system. While applicable for waste water, this study focuses on model salt water solutions with various fouling agents added …
Urea Functionalization Of Ultrasound-Treated Biochar: A Feasible Strategy For Enhancing Heavy Metal Adsorption Capacity, Baharak Sajjadi, James William Broome, Wei Yin Chen, Daniell L. Mattern, Nosa O. Egiebor, Nathan Hammer, Cameron L. Smith
Urea Functionalization Of Ultrasound-Treated Biochar: A Feasible Strategy For Enhancing Heavy Metal Adsorption Capacity, Baharak Sajjadi, James William Broome, Wei Yin Chen, Daniell L. Mattern, Nosa O. Egiebor, Nathan Hammer, Cameron L. Smith
Faculty and Student Publications
© 2018 Elsevier B.V. The main objective of a series of our researches is to develop a novel acoustic-based method for activation of biochar. This study investigates the capability of biochar in adsorbing Ni(II) as a hazardous contaminant and aims at enhancing its adsorption capacity by the addition of extra nitrogen and most probably phosphorous and oxygen containing sites using an ultrasono-chemical modification mechanism. To reach this objective, biochar physically modified by low-frequency ultrasound waves (USB) was chemically treated by phosphoric acid (H3PO4) and then functionalized by urea (CO(NH2)2). Cavitation induced by ultrasound waves exfoliates and breaks apart the regular …
Safety Considerations For The Design Of Modern Elevator Systems, Abhijaya Shrestha
Safety Considerations For The Design Of Modern Elevator Systems, Abhijaya Shrestha
Honors Theses
The main purpose of this work is to perform an analysis on elevator safety considerations in the United States. This report introduces the development of elevators through its history, definitions and commonly used concepts in the elevator industry. Elevators are already an important part of day-to-day life for thousands of people and have significant role to play in the future of urbanization due to increasing population density and decreasing real estate. Elevators not only make vertical transportation convenient, but also play an important role in providing accessibility for people with disabilities; so, its safe and reliable operation is very crucial. …
Analysis Of Crush Resistance And Mississippi-Sourced Sands To Determine Potential As Proppant Sands, Ryann C. Lam
Analysis Of Crush Resistance And Mississippi-Sourced Sands To Determine Potential As Proppant Sands, Ryann C. Lam
Honors Theses
Proppant is a media used in hydraulic fracturing to bear in-situ stresses in order to maintain fracture networks, which act as highly permeable pathways for hydrocarbon recovery. Proppant can be made from a variety of materials such as glass, ceramic beads, sand particles, and more. Proppants are characterized by their size, sorting, roundness, and sphericity. These properties help determine the compressive strength of the pack proppant. This study focuses on these properties for natural sand. The purpose of this study is to evaluate the viability of lower-quality sands as proppant sands by testing the affect these properties have on the …
Analysis And Optimization Of A Triple Notch Ultra-Wideband Antenna, Caleb D. Keathley
Analysis And Optimization Of A Triple Notch Ultra-Wideband Antenna, Caleb D. Keathley
Honors Theses
This paper analyzes a microstrip fed triple notch band Ultra-Wideband (UWB) antenna designed with an inverted pi slot and a Defected Microstrip Structure (DMS) Band-Stop Filter (BSF) from the design stage to the testing stage. This paper systematically steps through each phase of the antenna from simulation, to fabrication, and finally testing. The results of the simulation and testing phases are both compared to each other before comparing the entire project's results to the source paper's results. After determining the accuracy of the fabricated antenna, the paper discusses future avenues for optimization of an Ultra Wide-Band antenna.
Tracking Using Fusion Of Multiple Inertial Measurement Units, Jacob Reed Mccall
Tracking Using Fusion Of Multiple Inertial Measurement Units, Jacob Reed Mccall
Honors Theses
The objective of this thesis is to determine the effectiveness of fusing data from multiple inertial measurement units (IMU) to reduce bias and noise with an overall goal of achieving accurate tracking, which is the process of locating a body as it moves in a fixed environment. Every sensor is subject to noise, and each sensor has its own unique set of biases. The thesis presents a systematic overview of the sensors used in this research, which feature linear acceleration, angular acceleration, and a directional sensor, to form an inertial navigation system (INS). Sources of noise and bias that affect …
Damage Detection Using Destructive Testing Of A Reinforced Concrete Slab, Michael Edward Daves
Damage Detection Using Destructive Testing Of A Reinforced Concrete Slab, Michael Edward Daves
Electronic Theses and Dissertations
Visual inspection is one of the primary tools for evaluating the health of bridges as more reach or exceed their intended lifespan. Bridge deterioration must be monitored to ensure continued safety, so owners need maintenance reports to decide on corrective actions. Strategic repair can offer asset managers the benefit of saving money and time; thus, knowing where to locate and what type of repairs can be challenging when relying on visual techniques alone. A tool designed to aid bridge inspectors is the SHE^tm program, which quantitatively measures damage location and severity for any set of time data.
Molecular Simulation Of Graphene Oxide (Go) Nanocarriers For Doxorubicin: Effects Of Ph And Go Pegylation On The Drug Loading, Retention, And Release, Mina Mahdavi
Electronic Theses and Dissertations
Molecular dynamics (MD) simulation as a powerful tool is used to investigate the graphene oxide (GO) based drug delivery system in the process of drug loading, drug carrying and drug release. Doxorubicin (DOX), a widely used anticancer drug, is used as a drug model. The effect of different parameters including pH levels and the oxidation level of GO sheets on the drug loading mechanism is broadly discussed in this study. The drug release from the GO sheet using pH stimulus is explored and results confirmed that GO can release DOX molecules at acidic pH level.
A Study On The Comparison Of Sample Location Of Pultruded Composites Exposed To Corrosive Environment, Md Mahmudul Hasan
A Study On The Comparison Of Sample Location Of Pultruded Composites Exposed To Corrosive Environment, Md Mahmudul Hasan
Electronic Theses and Dissertations
Composite structures may experience different environments during their prolonged service life. These environments may include corrosive, acidic or both or many others that can adversely affect the mechanical properties of the structural composites. Various studies have been done on the environmental effects on the composites but only a few are on structural shaped pultruded composites. More specifically, none of the studies tell anything about the effects of corrosive media on the locations of the structural shaped pultruded composites coupon samples. Hence, this current study focused on two primary objectives, 1) the durability characterization of structural shaped pultruded composites after an …
Design And Investigation Of Genetic Algorithmic And Reinforcement Learning Approaches To Wire Crossing Reductions For Pnml Devices, Alexander Keith Gunter
Design And Investigation Of Genetic Algorithmic And Reinforcement Learning Approaches To Wire Crossing Reductions For Pnml Devices, Alexander Keith Gunter
Electronic Theses and Dissertations
Perpendicular nanomagnet logic (pNML) is an emerging post-CMOS technology which encodes binary data in the polarization of single-domain nanomagnets and performs operations via fringing field interactions. Currently, there is no complete top-down workflow for pNML. Researchers must instead simultaneously handle place-and-route, timing, and logic minimization by hand. These tasks include multiple NP-Hard subproblems, and the lack of automated tools for solving them for pNML precludes the design of large-scale pNML circuits.
Evaluating The Use Of Suas-Derived Imagery For Monitoring Flood Protection Infrastructure, Eleanor Mei Dietz
Evaluating The Use Of Suas-Derived Imagery For Monitoring Flood Protection Infrastructure, Eleanor Mei Dietz
Electronic Theses and Dissertations
In the US there are approximately 33,000 miles of levees. This includes 14,500 miles of levee systems associated with US Army Corps of Engineers programs and approximately 15,000 miles from other state and federal agencies. More than 14 million people live behind levees and associated flood prevention infrastructure. Monitoring and risk assessment are an on-going process, especially during times of flood conditions. The city of New Orleans was heavily impacted by Hurricane Katrina in 2005 by storm surges and intense rainfall. The impact of the hurricane was substantial enough to cause levee failure and I-wall toppling where many of the …
A Study Of Cooperative Spectrum Sharing Schemes For Internet Of Things Systems, Adham Hagag
A Study Of Cooperative Spectrum Sharing Schemes For Internet Of Things Systems, Adham Hagag
Electronic Theses and Dissertations
The Internet of Things (IoT) has gained much attention in recent years with the massive increase in the number of connected devices. Cognitive Machine-to-Machine (CM2M) communications is a hot research topic in which a cognitive dimension allows M2M networks to overcome the challenges of spectrum scarcity, interference, and green requirements. In this paper, we propose a Generalized Cooperative Spectrum Sharing (GCSS) scheme for M2M communication. Cooperation extends the coverage of wireless networks as well as increasing their throughput while reducing the energy consumption of the connected low power devices. We study the outage performance of the proposed GCSS scheme for …
Computational Modeling And Simulations Of Condition Deterioration To Enhance Asphalt Highway Pavement Design And Asset Management, Zul Fahmi Bin Mohamed Jaafar
Computational Modeling And Simulations Of Condition Deterioration To Enhance Asphalt Highway Pavement Design And Asset Management, Zul Fahmi Bin Mohamed Jaafar
Electronic Theses and Dissertations
A nation’s economy and prosperity depend on an efficient and safe transportation network for public mobility and freight transportation. A country’s road network is recognized as one of the largest public infrastructure assets. About 93 percent of 2.6 million miles of paved roads and highways in the United States (U.S.) are surfaced with asphalt. Longitudinal roughness, pavement cracking, potholes, and rutting are the major reasons for rehabilitation of asphalt roads. Billions of dollars are required annually for the maintenance and rehabilitation of road networks. If timely maintenance and rehabilitation are not performed, the pavement damages inflicted by heavy traffic repetitions …
Evaluating The Effects Of Water Influx On The Mississippi Sound: Current Vs. Historical Relationships, Jarett Lee Bell
Evaluating The Effects Of Water Influx On The Mississippi Sound: Current Vs. Historical Relationships, Jarett Lee Bell
Electronic Theses and Dissertations
This research investigated the influence of the opening of the Bonnet Carre Spillway and other fresh water inputs on the Mississippi Sound. The Bonnet Carre Spillway was completed in 1931 and was constructed to protect New Orleans whenever the Mississippi River is at flood stage. The spillway drains into Lake Pontchartrain a brackish-water lagoon north of New Orleans which then drains into Lake Borgne and subsequently into the Mississippi Sound. The inflow of water from the spillway changes the water chemistry of all receiving water bodies and impacts the waters of the Mississippi Gulf Coast. We collected in-situ temperature specific …
Use Of Seismic Refraction In Determining Rock Mass Anisotropy, Mohammad Najmush Sakib Oyan
Use Of Seismic Refraction In Determining Rock Mass Anisotropy, Mohammad Najmush Sakib Oyan
Electronic Theses and Dissertations
Seismic refraction is a popular method used by geological/geotechnical engineers to understand subsurface conditions. This method along with information collected from borings produce a realistic image of the ground beneath us. The goal of this study is to define and test a set of procedures to use seismic refraction alone to create high quality images of subsurface conditions. The focus is on areas with several meters of soil overlain by bedrock. The application of these procedures will minimize construction costs by eliminating the need for multiple boreholes. The results show that two important criteria must be met for successful application …
Analytical Modeling And Life Cycle Assessment Of A Solar Powered Vapor Absorption Cooling System, Harold A. Walters
Analytical Modeling And Life Cycle Assessment Of A Solar Powered Vapor Absorption Cooling System, Harold A. Walters
Electronic Theses and Dissertations
Vapor absorption cooling systems (VACS) offer an environmentally friendly alternative to the standard vapor compression cooling systems (VCCS) for cooling homes, businesses, factories, and other buildings. VACS use low-grade thermal energy to achieve a cooling effect and require minimal electrical input for the liquid solution pump used for circulation within the system. The thermal energy which powers these systems can be provided through several means; one popular form is through the use of solar thermal collectors. This paper provides a process for determining the overall size and configuration of the VACS depending upon the operating conditions of selected components. A …
Cellulose Nanocrystals As 'Green' Emulsifiers Stabilized Crude Oil In Water Emulsions, Omayma Alazzam
Cellulose Nanocrystals As 'Green' Emulsifiers Stabilized Crude Oil In Water Emulsions, Omayma Alazzam
Electronic Theses and Dissertations
This study examines the ability of CNC to stabilize crude o/w Pickering emulsions. The effects of concentration of CNC, ionic strength of the aqueous phase, volume fraction of crude oil to water, and the presence of divalent ions on the stability of crude o/w emulsions were examined. Emulsions stabilized with different concentrations of CNC vary from 0.1 to 1.0wt% were prepared and examined by visual assessment for creaming analysis and microscopic pictures to analyze droplet size and size distribution. Low concentration of CNC as 0.1wt% didn’t help with forming stable emulsions. As the concentration of CNC stabilized the emulsions increased, …
Field Testing And Simulation Of Vadose-Zone Recharge Wells In The Mississippi River Valley Alluvial Aquifer As An Artificial Recharge Method, Kyungwon Kwak
Electronic Theses and Dissertations
Increasing concerns regarding depletion of groundwater in the Delta region of Mississippi have led to a need to augment natural recharge. Infiltration basins are often one of the simplest means of artificially recharging aquifers. However the Delta has a layer of clay and silt at the surface so it is a better idea to use vadose-zone recharge wells that are not limited by the surficial layer of fine soils. The purpose of this study is to use full-scale field testing to assess the feasibility of using vadose-zone wells for artificial recharge of the Mississippi River Valley alluvial aquifer by using …
Optimizing The Performance Of Complex Engineering Systems Aided By Artificial Neural Networks, Khalil Qatu
Optimizing The Performance Of Complex Engineering Systems Aided By Artificial Neural Networks, Khalil Qatu
Electronic Theses and Dissertations
In the first problem Polyetherimide graphene nanoplatelets papers (PEIGNP) were tested with different graphene loadings varying from 0-97 weight percent (WT%). The resulting stress-strain curves were utilized to develop two ANN models. Stress-controlled and strain-controlled models. Both models shoan excellent correlation to the experimental. Several Mechanical properties were calculated from the predicted stress-strain curves namely; toughness maximum strength maximum strain and maximum tangent modulus. Both models captured the same overall behavior of the PEIGNP composite. However the strain-controlled model was found to predict lower stress than the stress-controlled model. Finally a Graphical User Interface (GUI) was developed to aid in …
Ionic Liquid-Based Composite Thin-Films For Selective Ion Separations In Electrodialysis, Saloumeh Kolahchyan
Ionic Liquid-Based Composite Thin-Films For Selective Ion Separations In Electrodialysis, Saloumeh Kolahchyan
Electronic Theses and Dissertations
The onset of climate change and rising global population has caused greater water scarcity, a considerable problem which threatens our world. The demand for fresh water is pushing a fast development of water purification technologies. Among these technologies, membrane-based water desalination processes are playing an interesting role in both academia and industry. Electrodialysis (ED) is an electro-membrane separation process aimed at water treatment through ion removal, which is achieved through the selective control and transport of ionic species. ED is a popular water treatment method; however, it is limited by membrane scaling, lack of ion selectivity, and high energy consumption …
Mac-Phy Frameworks For Lte And Wifi Networks' Coexistence Over The Unlicensed Band, Hadi Ahmad Kasasbeh
Mac-Phy Frameworks For Lte And Wifi Networks' Coexistence Over The Unlicensed Band, Hadi Ahmad Kasasbeh
Electronic Theses and Dissertations
The main focus of this dissertation is to address these issues and to analyze the interactions between LTE and WiFi coexisting on the unlicensed spectrum. This can be done by providing some improvements in the first two communication layers in both technologies. Regarding the physical (PHY) layer, efficient spectrum sensing and data fusion techniques that consider correlated spectrum sensing readings at the LTE/WiFi users (sensors) are needed. Failure to consider such correlation has been a major shortcoming of the literature. This resulted in poorly performing spectrum sensing systems if such correlation is not considered in correlated-measurements environments.
Historical Groundwater Data Analysis Of The Wilcox Aquifers In Lafayette County, Mississippi, Adam Schildhammer
Historical Groundwater Data Analysis Of The Wilcox Aquifers In Lafayette County, Mississippi, Adam Schildhammer
Electronic Theses and Dissertations
Lafayette County, Mississippi, is located in the northern central part of the state and relies on groundwater resources for all of the municipal water needs in the county. The population is increasing in the county; therefore, groundwater withdrawals are as well. With such a high demand on groundwater, it is important to have an understanding of the historical trends of the groundwater levels to determine is the population is over pumping the available supply. The Meridian-upper Wilcox aquifer and the lower Wilcox aquifer are the two groundwater sources for the county. In order to fully understand the behaviors of these …
Investigative Study Of Poly(Ionic) Liquid Incorporation In Resin Wafer Electrodeionization For Improved Specific Energy Consumption, Angela Fasuyi
Investigative Study Of Poly(Ionic) Liquid Incorporation In Resin Wafer Electrodeionization For Improved Specific Energy Consumption, Angela Fasuyi
Electronic Theses and Dissertations
An electrokinetic separation method known as Resin Wafer Electrodeionization (RW-EDI) is recognized as a promising technology for energy efficient desalination of brackish water. However RW-EDI is limited by an inherent drawback of its ion exchange media that prevents the largescale deployment of this technology. This research was undertaken to optimize the conventional resin wafer used in RW-EDI through the incorporation of high conducting polyionic liquids (PILs). It was hypothesized that by the changing non-conducting polyethylene binder with a PIL binder in conventional resin wafer configurations ion conductivity within the resin bed would be enhanced and could lead to an improvement …