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Articles 15001 - 15030 of 18368
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Carbon Credits And Energy Subsidies In Economic Decision Making For Confined Animal Feedlot Operation Waste Treatment, Taresh Grover
Carbon Credits And Energy Subsidies In Economic Decision Making For Confined Animal Feedlot Operation Waste Treatment, Taresh Grover
Masters Theses
"Released waste into the environment has always had a societal cost. Current issues with swine waste suggest that improved treatment is needed as agricultural production has become more industry-like and also as we now globally value the mitigation of global warming. The current need for and the economic support of advanced waste treatment has converged for animal agriculture, and now improved waste treatment is possible with concurrent economic benefit through alternative energy and carbon emissions. Recent changes have resulted in renewal of interest in anaerobic digestion (AD) technology with methane capture and energy production. An economic model was constructed to …
Modeling Kinetics Of Hydrolysis Of Three Pesticides In Laboratory Waters, Michelle Kim Marincel
Modeling Kinetics Of Hydrolysis Of Three Pesticides In Laboratory Waters, Michelle Kim Marincel
Masters Theses
"Pesticides and pesticide degradates found in drinking water sources are of particular concern to human health. When treated and disinfected at a drinking water plant, pesticides etridiazole, metribuzin, and diazinon undergo many treatment processes including lime softening, where the water pH is raised to 10 for calcium removal or 11 for magnesium removal. This thesis focuses on modeling the kinetics of hydrolysis of three pesticides that have the potential to undergo hydrolysis in drinking water plants. Linearly and non-linearly regressed first order and non-linearly regressed second order models were applied to the experimental data and compared to limited literature values. …
Removal Of Heavy Metals From Electroplating Wastewater Using Rice Husk And Coconut Coir, Frency Mathew
Removal Of Heavy Metals From Electroplating Wastewater Using Rice Husk And Coconut Coir, Frency Mathew
Masters Theses
"Heavy metal toxicity due to industrial wastewater has been a threat to the environment for the past many decades, especially in the developing countries such as India, China and Thailand where cost effectiveness of the removal process is a major factor. In this research, the effectiveness of two natural adsorbents, rice husk (RH) and coconut coir (CC), which are cheaply available in these countries for the removal of heavy metals from electroplating wastewaters were studied"--Abstract, page iii.
Coupling The Hydrodynamic And Water Quality Model Ce-Qual-W2 With A Multi-Trophic Fish Bio-Energetics Model For Lake Roosevelt, Washington, Michael Lee Mckillip
Coupling The Hydrodynamic And Water Quality Model Ce-Qual-W2 With A Multi-Trophic Fish Bio-Energetics Model For Lake Roosevelt, Washington, Michael Lee Mckillip
Dissertations and Theses
Grand Coulee Dam created Franklin D. Roosevelt Lake as part of the Columbia Basin Project. Located in northeastern Washington State, the Project provides economically important hydropower (19 billion kilowatt hours per year), irrigation (225,000 ha), flood control, and sport fishing ($5 to 20 million annually). A good system understanding aids in balancing these beneficial uses for the 230 km long reservoir. The reservoir's atypical 45-day mean residence time is much shorter than a typical lake, and much longer than for a riverine dam. The spring freshet requires drawdowns of 15 to 20 m for flood control—the driving characteristic of reservoir …
Using Student Presentations For Learning And Assessment: Some Experiences, Aidan O'Dwyer
Using Student Presentations For Learning And Assessment: Some Experiences, Aidan O'Dwyer
Conference papers
This contribution reports on, reflects on and evaluates the author’s experiences, over a number of academic years, of using formal student presentations as a means of learning and assessment in a taught postgraduate programme in engineering at Dublin Institute of Technology. Students were asked to prepare PowerPoint presentations on individual engineering topics; relevant references in books and technical papers were provided as assistance. Peer assessment of the presentations was employed, following a structured guideline agreed with the students. The contribution discusses the peer assessment experience in detail, including formal student feedback on the process. Some analysis work suggests that there …
The Research And Implementation Of Maintenance Excellence On Clean Utility Systems In The Pharmaceutical Indusry, Padraig Liggan
The Research And Implementation Of Maintenance Excellence On Clean Utility Systems In The Pharmaceutical Indusry, Padraig Liggan
Dissertations
Maintenance Excellence is the implementation of best maintenance practices within industry; it is the balance of performance, risk, and cost to achieve an optimal solution. This thesis has been structured around the 5 main areas of maintenance excellence; it has documented all the important functions of the maintenance department that contributes towards maintenance excellence. Demonstrating maintenance excellence is a big achievement however demonstrating it on pharmaceutical clean utility systems with strict regulatory controls is a major challenge. Pharmaceutical production is one of the most heavily regulated industries. With such an emphasis on product quality in the pharmaceutical industry, and with …
Linguatag: An Emotional Speech Analysis Application, Charlie Cullen, Brian Vaughan, Spyros Kousidis
Linguatag: An Emotional Speech Analysis Application, Charlie Cullen, Brian Vaughan, Spyros Kousidis
Conference papers
The analysis of speech, particularly for emotional content, is an open area of current research. Ongoing work has developed an emotional speech corpus for analysis, and defined a vowel stress method by which this analysis may be performed. This paper documents the development of LinguaTag, an open source speech analysis software application which implements this vowel stress emotional speech analysis method developed as part of research into the acoustic and linguistic correlates of emotional speech. The analysis output is contained within a file format combining SMIL and SSML markup tags, to facilitate search and retrieval methods within an emotional speech …
Knowledge Visualisation Of Wikipedia, Jinhui Wang
Knowledge Visualisation Of Wikipedia, Jinhui Wang
Dissertations
Wikipedia is a popular online encyclopaedia, in which articles are created together by anyone who is willing to contribute. There is debate on the quality, reliability and consistency of articles due to its openness. Besides, it is hard to see the growing path of articles because there is no centralised control in Wikipedia. The history of articles is available but in form that is difficult to process to get a picture of article evolution. Knowledge visualisation addresses the problem by providing analysis and comprehension of large amounts of data to gain insights and to facilitate knowledge creation and sharing. However, …
Technology And Signal Processing For Brain-Machine Interfaces, Justin C. Sanchez, Jose C. Principe, Toshikazu Nishida, Rizwan Bashirullah, John G. Harris, José A.B. Fortes
Technology And Signal Processing For Brain-Machine Interfaces, Justin C. Sanchez, Jose C. Principe, Toshikazu Nishida, Rizwan Bashirullah, John G. Harris, José A.B. Fortes
Electrical and Computer Engineering Faculty Research & Creative Works
Brain-machine interfaces (BMIs) aid disabled humans. BMI systems face challenges such as interfacing with neural tissue, selecting the most appropriate control signals, acquiring data and decoding patient intent in implantable or wearable computers. They must be able to adapt to different variety of behavioral states. Today's hybrid BMI systems consume less power and are made to chronically extract control commands from the nervous system. In terms of signal processing approaches, one challenge for BMI data analysis is learning how to handle large multi-input multi-output systems with signal representations that span continuous and discrete time. BMI systems also need sufficient information …
Columbia University/Vireo-Cityu/Irit Trecvid2008 High-Level Feature Extraction And Interactive Video Search, Shih-Fu Chang, Junfeng He, Yu-Gang Jiang, Elie El Khoury, Chong-Wah Ngo, Akira Yanagawa, Eric Zavesky
Columbia University/Vireo-Cityu/Irit Trecvid2008 High-Level Feature Extraction And Interactive Video Search, Shih-Fu Chang, Junfeng He, Yu-Gang Jiang, Elie El Khoury, Chong-Wah Ngo, Akira Yanagawa, Eric Zavesky
Research Collection School Of Computing and Information Systems
In this report, we present overview and comparative analysis of our HLF detection system, which achieves the top performance among all type-A submissions in 2008. We also describe preliminary evaluation of our video search system, CuZero, in the interactive search task.
Modeling The Fate Of Pharmaceuticals And Personal Care Products In Sewage Treatment Plants, Craig D. Adams
Modeling The Fate Of Pharmaceuticals And Personal Care Products In Sewage Treatment Plants, Craig D. Adams
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
Chemical fate models can be used to estimate the transformation reactions and the partitioning behavior of pharmaceuticals and personal care products (PPCPs) in sewage treatment plants (STPs). Modeling the fate of PPCPs in a STP requires parameters such as rate constants or partition coefficients that are often unique to a specific STP, and that may exhibit significant temporal variability. Chemical fate models provide both a valuable test of our understanding of the fundamental underlying mechanisms regarding the fate of PPCPs in STPs, as well as a means of providing both qualitative and quantitative estimates for PPCP removal. This paper is …
Low Power Energy Harvesting And Storage Techniques From Ambient Human Powered Energy Sources, Faruk Yildiz
Low Power Energy Harvesting And Storage Techniques From Ambient Human Powered Energy Sources, Faruk Yildiz
Dissertations and Theses @ UNI
Conventional electrochemical batteries power most of the portable and wireless electronic devices that are operated by electric power. In the past few years, electrochemical batteries and energy storage devices have improved significantly. However, this progress has not been able to keep up with the development of microprocessors, memory storage, and sensors of electronic applications. Battery weight, lifespan and reliability often limit the abilities and the range of such applications of battery powered devices. These conventional devices were designed to be powered with batteries as required, but did not allow scavenging of ambient energy as a power source. In contrast, development …
Degradation And Water Quality Dynamics Of Sugarcane Residue In South Louisiana, Jose Roberto Deras
Degradation And Water Quality Dynamics Of Sugarcane Residue In South Louisiana, Jose Roberto Deras
LSU Doctoral Dissertations
PURPOSE: This research was conducted to assess methods to manage the residue blanket to avoid open field burning in sugarcane. Experiments were conducted in the state of Louisiana to evaluate methods to asses and potentially reduce water quality issues. METHODS: Concentrations and frequencies of biological compost tea were sprayed on sugarcane combine-harvester residue blanket to increase degradation rate and reduce potential for runoff water to transport nutrients and sediments that may impair water bodies, while sustaining suitable sugarcane yield. Carbon dioxide evolution rate (mg CO2-C) and CO2 fluxes were measured in laboratory and in open field conditions; as an index …
Freezing Processes In Cell Suspensions Evaluated Using Cryomicroscopy, Tathagata Acharya
Freezing Processes In Cell Suspensions Evaluated Using Cryomicroscopy, Tathagata Acharya
LSU Master's Theses
This thesis aims at evaluating the freezing response of three different cell types, Pacific Oyster embryos, Jurkats and Helas, using the technique of cryomicroscopy. The choice of cells was primarily based on supporting ongoing research work at the Bioengineering Laboratory, Department of Mechanical Engineering at Louisiana State University in Baton Rouge. On a secondary basis, the cells were chosen based on their contrasting nature. While Pacific Oyster being a favorite food in USA calls for successful techniques of cryopreservation of their embryos in order to keep up with the growing demand, Jurkat and HeLa are undesired malignant human cells that …
Characterization Of Hma Mixtures Containing High Recycled Asphalt Pavement Content With Crumb Rubber Additives, Samuel B. Cooper, Jr.
Characterization Of Hma Mixtures Containing High Recycled Asphalt Pavement Content With Crumb Rubber Additives, Samuel B. Cooper, Jr.
LSU Master's Theses
As the price of petroleum and material costs escalate and pressures of maintaining the sustainability of our environment, owners must continually find methods to decrease material costs and maximize their benefits. One such method is to increase and/or begin using readily available recycled materials like reclaimed asphalt pavements (RAP) and crumb rubber (CR). The objective of this study was to fundamentally characterize the laboratory performance of conventional HMA mixtures and mixtures containing high RAP content and waste tire crumb rubber/additives through their fundamental engineering properties. A Superpave l9-mm nominal maximum aggregate size (NMAS) Level 2 HMA mixture meeting LADOTD specification …
An Investigation Into Fuel Cells And Flow Cytometers Optimal Design, Etim Sunday Udoetok
An Investigation Into Fuel Cells And Flow Cytometers Optimal Design, Etim Sunday Udoetok
LSU Doctoral Dissertations
The aim of the fuel cells part of this project was to investigate the performance of Proton Exchange Membrane Fuel Cells and closely related fuel cell types like the Alkaline Fuel Cells and Phosphoric Acid Fuel Cells. The investigation involved understanding the performance of fuel cells, addressing the shortcomings of currently used designs, and finding new methods for improving the performance of fuel cells. CFD was used to study flow channels and information learned from the study was used to design a new and improved flow channel. A prototype of the new design was fabricated, tested and found to perform …
Design And Testing Of An Infrared Temperature System To Test The Effects Of Chemical Stimulation On Heat Production In Cell Cultures, Nicholas Gerbo
Design And Testing Of An Infrared Temperature System To Test The Effects Of Chemical Stimulation On Heat Production In Cell Cultures, Nicholas Gerbo
LSU Master's Theses
Temperature is an important physiological parameter of cell biology. The thermal energy output of cells in vitro can offer insight into cellular processes. Standard methodology of measuring cellular thermal output has been through microcalorimetry. In this work, infrared thermography is presented as an alternative to microcalorimetry and other measurement techniques. An enclosure that controls the temperature of cells and allows for injection of temperature control of chemical agents and subsequent measurement of cell temperature using an infrared camera has been designed and tested. The enclosure was tested with 3T3-L1 adipocytes treated with the β3 adrenergic agonist CL 316-243 for up …
Cryopreservation Of Adipose Derived Adult Stem Cells And Multidimensional Cell Sheets, Sreedhar Thirumala
Cryopreservation Of Adipose Derived Adult Stem Cells And Multidimensional Cell Sheets, Sreedhar Thirumala
LSU Doctoral Dissertations
Human adipose tissue provides a uniquely abundant and accessible source of adult stem cells. In response to chemical, hormonal or structural stimuli, these human adipose-derived adult stem (ASCs) cells can differentiate along multiple lineage pathways, including adipocytes, chondrocytes, myocytes, neurons and osteoblasts. Successful cryopreservation of scientifically and commercially important ASCs would revolutionize the tissue engineering and regenerative medicine industry. In this research, we have investigated the water transport phenomenon during freezing of several passages of adipose derived adult stem cells and generated the membrane permeability parameters in the presence and absence of cryoprotective agents. These measured permeability parameters were then …
Quantification Of Tars And Particulates From A Pilot Scale, Downdraft Biomass Gasifier, Christopher Osita Akudo
Quantification Of Tars And Particulates From A Pilot Scale, Downdraft Biomass Gasifier, Christopher Osita Akudo
LSU Master's Theses
Alternative energy production through biomass gasification produces combustible gases, such as carbon monoxide, hydrogen, and methane. These gases can be used for generation of direct heat, electricity, or liquid fuels through the Fischer Tropsch process. However, a major limitation of the overall process is the purity of the generated synthesis gas. The tars and particulates generated in the gasification process constitute a major impediment to the commercial use of this technology because they may condense on valves, fittings, and therefore, hinder the smooth running of an engine. This research was aimed at developing a gas characterization and testing protocol, and …
Assessing A Hydrothermal Liquefaction Process Using Biomass Feedstocks, Jason S. Midgett
Assessing A Hydrothermal Liquefaction Process Using Biomass Feedstocks, Jason S. Midgett
LSU Master's Theses
The need to reduce the United States dependence on foreign oil has never been greater. In the past decade emphasis has been placed on developing new and/or improved means to procure clean renewable energy. Liquefaction, which was developed for coal conversion over a century ago is one of these areas. Liquefaction used for biomass conversions to bio-oils is grouped under the thermochemical conversion (TCC) area of energy conversion methods along with gasification and pyrolysis. This thesis discusses liquefaction experiments conducted using varieties of Louisiana biomass feedstocks. Dairy manure collected from the Louisiana State University Dairy Farm in Baton Rouge, was …
Redutive Dehalogenation Of Chlorinated Alkanes By Novel Bacteria At The Petroprocessor Of Louisiana Inc. Superfund Site, Jun Yan
LSU Doctoral Dissertations
A reductively dehalogenating enrichment culture was established using chloroalkane-contaminated groundwater from the PetroProcessors of Louisiana, Inc. (PPI) Superfund site. Two novel, strictly anaerobic bacterial strains, designated as BL-DC-8 and BL-DC-9, were isolated from the enrichment culture. These strains represent the first bacteria known to anaerobically dehalogenate 1,2,3-trichloropropane, the degradation pathway of which was determined. Both strains could be cultured in completely defined basal medium and were also able to dehalogenate a variety of other vicinally chlorinated alkanes including 1,1,2,2-tetrachloroethane, 1,1,2-trichloroethane, 1,2-dichloroethane, and 1,2-dichloropropane via dichloroelimination reactions. Chlorinated alkanes containing only a single chlorine substituent (1-chloropropane, 2-chloropropane), chlorinated alkenes (tetrachloroethene, trichloroethene, …
Heterogeneous Catalyzed Macromolecular Hydrogenations In Oscillating Systems, Alan Bussard
Heterogeneous Catalyzed Macromolecular Hydrogenations In Oscillating Systems, Alan Bussard
LSU Doctoral Dissertations
An examination of novel oscillatory (alternating gas and liquid phase) reactors and heterogeneous catalysts for multi-phase macromolecular reactions was carried out. A monolith-containing square die with Pd/Al2O3 catalysts was used to successfully hydrogenate poly(styrene) (PS). The inherent pulse behavior of the extruder was found to be sufficient to approach intrinsic kinetics at low polymer concentrations. At higher (10 wt% PS) concentrations, forced pulsing was shown to have a greater impact on observed reaction rates. Selectivity with this extruder-fed reactor was better than with a stirred tank in all cases, due to a more plug-flow-like residence time distribution. While accurate control …
Improved Duct Systems Task Report With Stagegate 2 Analysis, Florida Solar Energy Center, Neil Moyer
Improved Duct Systems Task Report With Stagegate 2 Analysis, Florida Solar Energy Center, Neil Moyer
FSEC Energy Research Center®
The Building America Industrialized Housing Partnership's work with two industry partners, Cavalier Homes and Southern Energy Homes, in constructing and evaluating prototype interior duct systems will be summarized. Issues of energy performance, comfort, DAPIA approval, manufacturability and cost will be addressed. A stage gate 2 analysis will address the current status of project showing that there are still refinements needed to the process of incorporating all of the ducts within the air and thermal boundaries of the envelope.
Effect Of Sparger Design On Hydrodynamics Of A Gas Recirculation Anaerobic Bioreactor, Rajneesh Varma, Muthanna H. Al-Dahhan
Effect Of Sparger Design On Hydrodynamics Of A Gas Recirculation Anaerobic Bioreactor, Rajneesh Varma, Muthanna H. Al-Dahhan
Chemical and Biochemical Engineering Faculty Research & Creative Works
The Effects of Sparger Design and Gas Flow Rate On, Gas Holdup Distribution and Liquid (Slurry) Recirculation Velocity Have Been Studied in a Surrogate Anaerobic Bioreactor Used for Treating Bovine Waste with a Conical Bottom Mixed by Gas Recirculation. a Single Orifice Sparger (SOS) and a Multi-Orifice Ring Sparger (MORS) with the Same Orifice Open Area and Gas Flow Rates (Hence the Same Process Power Input) Are Compared in This Study. the Advanced Non-Invasive Techniques of Computer Automated Tomography (CT) and Computer Automated Radioactive Particle Tracking (CARPT) Were Employed to Determine Gas Holdup, Liquid Recirculation Velocity, and the Poorly Mixed …
Metalloporphyrin Catalyzed Degradation Of Pce: Effects Of Reductants, Buffers And Cosolvent Concentration, Sowmya Suryanarayanan
Metalloporphyrin Catalyzed Degradation Of Pce: Effects Of Reductants, Buffers And Cosolvent Concentration, Sowmya Suryanarayanan
All Theses
Reductive dechlorination of chlorinated organic contaminants using metalloporphyrins as catalysts may be an effective approach to treat widespread contamination. However, most previous studies have examined water-soluble rather than insoluble metalloporphyrins despite the fact that the latter category makes up the largest fraction found in nature. Recent studies have shown that addition of different cosolvents to water can activate otherwise non-reactive metalloporphyrin catalysts and facilitate the reduction of tetrachloroethylene (PCE), presumably by the mere process of making the otherwise insoluble metalloporphyrins dissolve in solution. Therefore, solubility has been advanced as a key factor in the ability of metalloporphyrins to catalyze organic …
Bio-Surfaces And Geometric References For A Standardized Biomechanical Design Methodology For Mass Customization, Kimberly A. Jensen
Bio-Surfaces And Geometric References For A Standardized Biomechanical Design Methodology For Mass Customization, Kimberly A. Jensen
Theses and Dissertations
This dissertation presents a method for the design of customizable products that interface with the human body. The method presented involves first, a consistent method of capturing and representing the human model so that the model can be used with CAx tools and solid modeling techniques. Second, it provides a design methodology based on feature structure planning and assembly modeling that provides a consistent structure to the design process so that it can be reused and parameterized. Third, a strategy for identifying parametric variables that are referenced to the human body is introduced. The core of this method is the …
Laboratory Evaluation Of Microbial Aggregation In Activated Sludge, Xiaoling Liu
Laboratory Evaluation Of Microbial Aggregation In Activated Sludge, Xiaoling Liu
All Theses
Microbial aggregation was investigated in this study using the activated sludge process as a model system, the performance of which is highly dependent on effective bioaggregation. This research includes two experiments. First, four laboratory-scale activated sludge sequencing batch reactors (SBRs) were constructed in order to evaluate the effect of solids retention time (SRT) on microbial aggregation. These SBRs were operated at SRT of 4, 8, 16, and 32 days, respectively, fed with a protein-based synthetic wastewater, and monitored over a period of 268 days for performance and sludge settling characteristics including soluble COD in the effluent (sCOD), sludge volume index …
Cosolvent Effects On The Reductive Dechlorination Of Tetrachloroethylene Catalyzed By Iron Tetraphenyl Porphyrin Chloride, Lavanya Ramasubramanian
Cosolvent Effects On The Reductive Dechlorination Of Tetrachloroethylene Catalyzed By Iron Tetraphenyl Porphyrin Chloride, Lavanya Ramasubramanian
All Theses
Abiotic electron transfer mediated reductive dechlorination reactions have been studied extensively in the past decade. Porphyrins and metalloporphyrins are common electron transfer mediators used. Past studies have shown that some metalloporphyrins play a key role in increasing the rate of reaction in the presence of cosolvents. There have also been suggestions that organic cosolvents enhance the rate of reduction by increasing the solubility of metalloporphyrins.
The primary objective of this project was to examine the effect of cosolvents on the metalloporphyrin-catalyzed reductive dechlorination of tetrachloroethylene (PCE). Subsequently, experiments were also conducted to test the hypothesis that metalloporphyrin solubility is linked …
Response Of Phlebotomine Sand Flies To Light-Emitting Diode-Modified Light Traps In Southern Egypt, D. F. Hoel, Emad Y. Fawaz, J.E Butler, N. Watany, S. S. El-Hossary, J. Villinski
Response Of Phlebotomine Sand Flies To Light-Emitting Diode-Modified Light Traps In Southern Egypt, D. F. Hoel, Emad Y. Fawaz, J.E Butler, N. Watany, S. S. El-Hossary, J. Villinski
United States Navy: Publications
Centers For Disease Control and Prevention (CDC) light traps were modified for use with light-emitting diodes (LED) and compared against a control trap (incandescent light) to determine the effectiveness of blue, green, and red lights against standard incandescent light routinely used for sand fly surveillance. Light traps were baited with dry ice and rotated through a 4 x 4 Latin square design during May, June, and July, 2006. Trapping over 12 trap nights yielded a total of 2,298 sand flies in the village of Bahrif, 6 km north of Aswan on the east bank of the Nile River in southern …
Department Of Biological Systems Engineering Newsletter, Volume 2, Issue 3, December 2007
Department Of Biological Systems Engineering Newsletter, Volume 2, Issue 3, December 2007
BSE Department Magazine
Contents:
New Tractor Test Track Dedication
From the Department Head
Awards
Meet the Faculty
Alumni News
Student News
Summer Graduations
Quarter-scale Tractor Competition
ASABE Student Branch
ASABE International Preprofessional Council
Distinguished Fellowship Awards
John and Louise Skala Fellowships
Researching Plant Sterols
Milton E. Mohr Fellowship in Agriculture
Scholarships and Ice Cream
100 Years As a University of Nebraska Department
Alumnus Profile
Career opportunities in food engineering
Congratulations
Comings and Goings