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Southern University and A&M College

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Articles 1 - 19 of 19

Full-Text Articles in Engineering

Bipolar Membrane Electrodialysis For Sustainable Utilization Of Inorganic Salts From The Reverse Osmosis Concentration Of Real Landfill Leachate, Hao-Ran Yang, Chi-Qian Zhang, Bing Li, Jia-Cheng Yang, Yu-Ming Zheng, Mohammad Younas, Zhi-Hua Zheng Mar 2023

Bipolar Membrane Electrodialysis For Sustainable Utilization Of Inorganic Salts From The Reverse Osmosis Concentration Of Real Landfill Leachate, Hao-Ran Yang, Chi-Qian Zhang, Bing Li, Jia-Cheng Yang, Yu-Ming Zheng, Mohammad Younas, Zhi-Hua Zheng

Faculty Publications

Developing an effective resource utilization method for landfill leachate reverse osmosis concentrate (LLRC) remains a challenge because of the high concentrations of inorganic salts and refractory organic compounds. This study applied a bipolar membrane electrodialysis (BMED) to separate inorganic salts from real LLRC while simultaneously reclaiming inorganic acids and bases. The performance of BMED was affected by operating parameters, such as operating voltage, membrane surface flow velocity, and initial acid-base concentration. With optimized operating parameters, the reclaimed acid-base concentrations, desalination rate, and current efficiency were higher with less energy consumption. Ultimately, 0.41 mol/L acids and 0.40 mol/L bases were reclaimed …


Bioaugmentation With Tetrasphaera To Improve Biological Phosphorus Removal From Anaerobic Digestate Of Swine Wastewater, Jiaxin Wang, Chiqian Zhang, Ping Li, Hui Xu, Weiqu Wang, Weizhao Yin, Jinhua Wu, Zhiqiang Hu Feb 2023

Bioaugmentation With Tetrasphaera To Improve Biological Phosphorus Removal From Anaerobic Digestate Of Swine Wastewater, Jiaxin Wang, Chiqian Zhang, Ping Li, Hui Xu, Weiqu Wang, Weizhao Yin, Jinhua Wu, Zhiqiang Hu

Faculty Publications

Tetrasphaera-enhanced biological phosphorus removal (T-EBPR) was developed by augmenting conventional EBPR (C-EBPR) with Tetrasphaera to improve phosphorus removal from anaerobic digestate of swine wastewater. At influent total phosphorus (TP) concentrations of 45 to 55 mg/L, T-EBPR achieved effluent TP concentration of 4.17 ± 1.02 mg/L, 54% lower than that in C-EBPR (8.98 ± 0.76 mg/L). The enhanced phosphorous removal was presumably due to the synergistic effect of Candidatus Accumulibacter and Tetrasphaera occupying different ecological niches. Bioaugmentation with Tetrasphaera promoted the polyphosphate accumulation metabolism depending more on the glycolysis pathway, as evidenced by an increase in intracellular storage compounds of glycogen …


Electromagnetic Wave Propagation For Industry And Biomedical Applications, Fred Lacy Jun 2021

Electromagnetic Wave Propagation For Industry And Biomedical Applications, Fred Lacy

Faculty Publications

Superconductors have a wide array of applications, such as medical imaging, supercomputing, and electric power transmission, but superconducting materials only operate at very cold temperatures. Thus, the quest to engineer room temperature superconductors is currently a hot topic of research. To accomplish this mission, it is important to have a complete understanding of the material properties that are being used to create these superconductors. Understanding the atomic and electromagnetic properties of the prospective materials will provide tremendous insight into the best choice for the materials. Therefore, a theoretical model that incorporates electromagnetic field theory and quantum mechanics principles is utilized …


International Journal Of Electrical And Computer Engineering, Fred Lacy Feb 2021

International Journal Of Electrical And Computer Engineering, Fred Lacy

Faculty Publications

A superconductor has the ability to conduct electricity perfectly and exclude magnetic fields from its interior. In order to understand electromagnetic characteristics of superconductors, their material properties need to be examined. To facilitate this understanding, a theoretical model based on concepts of electromagnetics is presented to explain the electrical and magnetic properties of superconductors. The permittivity response is the key aspect of the model and it describes the electrical resistance response and why it vanishes at the material’s critical temperature. The model also explains the behavior of magnetic fields and why they cannot exist inside superconducting materials. The theoretical concepts …


Effective Early Treatment Of Microcystis Exponential Growth And Microcystin Production With Hydrogen Peroxide And Hydroxyapatite, Ian Struewing, Nathan Sienkiewicz, Chiqian Zhang, Nicholas Dugan, Jingrang Lu Dec 2020

Effective Early Treatment Of Microcystis Exponential Growth And Microcystin Production With Hydrogen Peroxide And Hydroxyapatite, Ian Struewing, Nathan Sienkiewicz, Chiqian Zhang, Nicholas Dugan, Jingrang Lu

Faculty Publications

: Mitigating cyanotoxin production is essential to protecting aquatic ecosystems and public health. However, current harmful cyanobacterial bloom (HCB) control strategies have significant shortcomings. Because predicting HCBs is difficult, current HCB control strategies are employed when heavy HCBs have already occurred. Our pilot study developed an effective HCB prediction approach that is employed before exponential cyanobacterial growth and massive cyanotoxin pro‐ duction can occur. We used a quantitative polymerase chain reaction (qPCR) assay targeting the toxin‐encoding gene mcyA to signal the timing of treatment. When control measures were applied at an early growth stage or one week before the exponential …


Using Matlab(C) To Design A Program That Analyze And Compare Zero Correlation Zone Codes With Various Orthogonal And Pseudo Noise Seeds, Reginald L. Cooper May 2006

Using Matlab(C) To Design A Program That Analyze And Compare Zero Correlation Zone Codes With Various Orthogonal And Pseudo Noise Seeds, Reginald L. Cooper

Electronic Dissertations and Theses

Under the direction of Dr. Ernest L. Walker, professor of electrical engineering at Southern University and A & M College, Baton Rouge, LA, the author conducted research under the DOE-NNSA Dr. Samuel P. Massie Chair of Excellence grant, and the AFRL grant. Under these grants the author research information on Code-Division Multiple Access (CDMA) sequence for Ad hoc Wireless Sensing Networks (AWSN). The focus of this research was to simulate and analyzing CDMA code sets known as the zero-correlation zone (ZCZ) coding, and how its usage reduces multiple access interference (MAI), and the effects of the near far problem. ZCZ …


Development Of A Linear Control Model For A Camless Valvetrain, Domenic R. Albert May 2005

Development Of A Linear Control Model For A Camless Valvetrain, Domenic R. Albert

Electronic Dissertations and Theses

The disciplines of mechanical and electrical engineering have been merging slowly over the last few decades. More specifically, the automotive industry has reaped the benefits of using electronics to improve upon the economics and ergonomics of business well as product. Although electronic systems have proved to be useful throughout consumer vehicles, the engine is arguably the area that benefits the most. Essentially, efficiency and power output of an internal combustion engine can be improved by optimizing the airflow of the cylinders. Since this airflow is controlled by the valve train, their manipulation affects the overall performance of an engine. Additionally, …


Coordinate Metrology For Machine Tools, Brian Warren Nov 2003

Coordinate Metrology For Machine Tools, Brian Warren

Electronic Dissertations and Theses

This thesis is concerned with Coordinate Metrology for Machine Tools. The contributions of the thesis are of two criteria. First, by making use of techniques from available software to determine geometry characteristic performance of a Mazak Quick Turn 20 Slant-Bed Lathe, and we determine theory for categorizing typical lathe evaluation; second, we extend this powerful geometric process to verification formulation of the error estimates by utilizing coordinate metrology notations contained in Brown & Sharpe's "Coordinate Metrology" standards and develop evaluation techniques for verifying machine tool path error estimation based on important observations that machined part features have a deviation from …


Design Of A Louisiana Interstate System, Joseph Cains Iii Jul 2003

Design Of A Louisiana Interstate System, Joseph Cains Iii

Electronic Dissertations and Theses

The need for a transportation system in the United States, as well as the entire world, has long been a key factor for the high-level, fast paced society we know today. The desire to explore and expand territory and influence spawning from curiosity and instinctive nature of man has played a large role in the many eras of invention and progress, bringing a once primitive existence to the significantly advanced modern life in which we live. From the stone wheel to the metal wings of a plane, our intellectual advancement has progressed significantly, and over the years the demand for …


Design Of A Pedestrian Bridge System Across Lake Kernan At Southern University, Symoane A. Mizell May 2003

Design Of A Pedestrian Bridge System Across Lake Kernan At Southern University, Symoane A. Mizell

Electronic Dissertations and Theses

Bridges are of the oldest structural challenges that engineers have encountered, they typify progress more than any other structures built by man. Throughout the course of history, bridges have provided dual purposes of serving as adjuncts between land bodies and also of acting as aesthetic marks of beauty. The idea that the addition of a bridge and other aesthetic structures across the lake would help cure some of Lake Kernan' s ills is the motivation for this design project and this thesis. This design project is a valuable lesson for the members of this design group. The project encompasses many …


The Development And Application Of A Low-Cost Force Feedback System For A Haptic Interface For Use Within A Three-Dimensional Virtual Reality Environment, Sarne M. Hutchersin May 2002

The Development And Application Of A Low-Cost Force Feedback System For A Haptic Interface For Use Within A Three-Dimensional Virtual Reality Environment, Sarne M. Hutchersin

Electronic Dissertations and Theses

Virtual Reality is a fast growing market. Everyday new applications of this technology are being discovered. Virtual Reality (VR) benefits many sectors of the world market. It has applications in areas such as medicine, research, industry, education, and the military. In the field of medicine, VR is being used to train anesthesiologists in the delicate work of delivering anesthesia and in rehabilitation treatment. Researchers use VR to explore micro- and nanoscale systems with scanning tunneling microscopes. Industrial organizations use VR to operate robotics equipment from remote locations. Educational institutions can use VR to augment course work and in research applications. …


A Structural Analysis Of The Operation Of An Electric Ac Motor Using A Dc Lead-Acid Battery Powered By Photovoltaic Cells, Patrick D. Carpenter May 2002

A Structural Analysis Of The Operation Of An Electric Ac Motor Using A Dc Lead-Acid Battery Powered By Photovoltaic Cells, Patrick D. Carpenter

Electronic Dissertations and Theses

The purpose of this project is to help reduce the electrical energy costs by using a natural resource that replenishes itself. The rays of the sun excite electrons in the light sensitive photovoltaic cells on the solar panels, and the cells convert the light into electricity. The total amount of solar energy that reaches the Earth is about 1 kilowatt per square meter. But because of the current technological limitations, the solar cells can only extract about 14% of the energy that reaches the Earth. The electricity generated by the array is directed to and stored in rechargeable batteries. The …


The Pci Compatible Junction Temperature Monitor, Adrian L. Marshall May 2002

The Pci Compatible Junction Temperature Monitor, Adrian L. Marshall

Electronic Dissertations and Theses

The purpose of this research project is to give a precise temperature reading of various semiconductor devices. An accurate junction temperature measurement could allow you to eliminate heat sinks and fans if they are not needed or it could prevent your system from going down on a hot day. Nearly all integrated circuits contain input protection diodes to protect against static electricity. These diodes can be used to make the measurement process simple. The only procedure that is required is to disconnect one wire leading to the device to be tested. The junction temperature monitor is then connected to the …


Analysis Of The Anodic Bonding Process And The Packaging Effects In Mems Devices, Sonya G. Iyasere Aug 2000

Analysis Of The Anodic Bonding Process And The Packaging Effects In Mems Devices, Sonya G. Iyasere

Electronic Dissertations and Theses

This paper gives a brief overview of the process of completely sealing and permanently joining glass to a semi-conductor without the use of adhesives known as anodic or electrostatic bonding. It is well known that this process will introduce thermal strain due to different coefficients of thermal expansion between any metal or semiconductor and glass. This paper will also describe the effect of the MEMS packaging process on various devices that are bonded electrostatically.


Estimation Of Parameters For Calibration And Validation Of Monochlorobenzene Flux, Christina Hill Dec 1999

Estimation Of Parameters For Calibration And Validation Of Monochlorobenzene Flux, Christina Hill

Electronic Dissertations and Theses

Research is currently being conducted to enhance the existing pump-and-treat remediation strategy at the Petro Processors, Incorporated site (PPI)-a petrochemical disposal site consisting of two locations in East Baton Rouge Parish (Louisiana). Monochlorobenzene, a biodegradation byproduct of hexaclorobenzene, is a toxic chemical prevalent at the site; the diffusivity of monochlorobenzene is being studied through desorption experiments. The objective of soil desorption experiments is to determine soil-water distribution or partition coefficients. Partitioning is the distribution of solutes between two phases such as solid phase and a liquid (aqueous) phase. The derivation of acceptable partition coefficients "are used in [models] to determine …


The Testing And The Automation Of Dark Current, Photoresponse And Responsivity Measurements For On-Wafer Metal Semiconductor Metal (W-Msm) Photodetectors, Tiffany Evette Monroe May 1999

The Testing And The Automation Of Dark Current, Photoresponse And Responsivity Measurements For On-Wafer Metal Semiconductor Metal (W-Msm) Photodetectors, Tiffany Evette Monroe

Electronic Dissertations and Theses

This paper presents the testing and the automation of dark current, photoresponse, and responsivity measurements for W-MSM photodetectors. The testing phase of this particular photodetector is performed in order to compare manual measurement results with automated measurement results done in Lab VIEW. The automation phase is performed in order to take measurements quickly and efficiently using Lab VIEW programs which imitate the functions of actual instruments used to take dark current, photoresponse, and responsivity measurements. So far, only the dark current measurements can be automated. However, in the future, Lab VIEW programs will be written in order to automate the …


From Country Club To Ghetto : The Uneven Distribution Of Energy Cost Between Areas Of Different Economic Class, Kenya R. Reeves May 1998

From Country Club To Ghetto : The Uneven Distribution Of Energy Cost Between Areas Of Different Economic Class, Kenya R. Reeves

Electronic Dissertations and Theses

For years there has been controversy over the uneven distribution of energy costs. Documented energy complaints are on file on the state as well as national level of government. Various sources have performed adequate research that shows that there is a difference in energy cost based on economic class. In order to prove that persons of different economic class pay different rates for energy, two distinct areas of Baton Rouge were issued surveys-Scotlandville and Bluebonnet. Questions used were retrieved from secondary sources and Entergy as well. From the results computed, there is definitely a difference in energy costs depending upon …


The Effects Of The Aging Process On The Mechanical Properties In Al-Cu-Li(2195) Alloy, Michael Abernathy May 1997

The Effects Of The Aging Process On The Mechanical Properties In Al-Cu-Li(2195) Alloy, Michael Abernathy

Electronic Dissertations and Theses

The Alumniurn-Copper-Lithi arn (Al-C u-Li) alloy s are used as aero space materi als du e to thei r low den sity , hig h modulus of elasticity, good resistance to fatigue crack propagation , and excelle nt cryogenic properties. In the current experime nt, Al-Cu-L i (2 195) allo y is se lected to study the effect of the ag ing process on mechanical propertie s. The 2 195 all oy in sheet form is supplied by Lockheed-Marti n, New Orleans. The as-received 2 195 alloy sheet is solution-treated at 5 10 ° C for one hour followed by …


Fluid Delivery System By Process Control, Anthony D. Banks Jun 1996

Fluid Delivery System By Process Control, Anthony D. Banks

Electronic Dissertations and Theses

The purpose of this design project is to design and demonstrate a complete mechatronic system that will regulate a desired temperature of a fluid and control the rate at which it is delivered. This system can serve several purposes and have numerous applications. In particular, applications are inclusive of, but not limited to the medical administration of certain types of medication. The Fluid Delivery System By Process Control can be utilized to control any number of factors such as the temperature of the medication, rate of administration, flow control, mixture ratios, and time and frequency of administration.