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Cost Effective Prevention Of Reflective Cracking In Composite Pavements, Rakesh Bandaru 2010 Louisiana State University and Agricultural and Mechanical College

Cost Effective Prevention Of Reflective Cracking In Composite Pavements, Rakesh Bandaru

LSU Master's Theses

Louisiana had experimented with various techniques and treatments to control reflection cracking since the 1970s; however, the cost-effectiveness and performance of these methods had not been reliably evaluated. In addition, scientific evaluation and testing of these treatment methods was not performed on many projects. To ensure successful control of this distress and effective allocation of maintenance funds, there is a critical need to assess the performance of pavement sections across the state built with various treatment methods and to determine the most cost-effective techniques to delay or to prevent reflection cracking in composite pavements. The objective of this study is ...


The Effects Of Lean On Employees' Affective Attitude In A Modular Homebuilding Manufacturer, Digvesh Khot 2010 Louisiana State University and Agricultural and Mechanical College

The Effects Of Lean On Employees' Affective Attitude In A Modular Homebuilding Manufacturer, Digvesh Khot

LSU Master's Theses

Many organizational problems are related to job dissatisfaction, job-related stress, and lack of commitment in workers. Employees’ Affective Attitude (EAA) involves these three factors: job satisfaction, job stress, and commitment. This research is aimed at measuring the impact of Lean concepts on EAA factors. While providing an overview of Lean production and construction, this study focuses on one fundamental Lean concept, Kaizen. This thesis describes a case study showcasing the application of Lean concepts through Kaizen events and its impact on EAA for a modular homebuilder company. Based on previous literature a conceptual model was developed describing the potential links ...


Parameterization Of Microwave Assisted Oil Extraction And Its Transesterification To Biodiesel, Akanksha V. Kanitkar 2010 Louisiana State University and Agricultural and Mechanical College

Parameterization Of Microwave Assisted Oil Extraction And Its Transesterification To Biodiesel, Akanksha V. Kanitkar

LSU Master's Theses

Currently, a majority of the world’s energy needs are met through use of fossil fuels, petroleum, coal and natural gas. The depletion of petroleum reserves, rising and extremely volatile crude oil prices, and environmental concerns have led to search for renewable and environmentally friendly fuels. The ultimate goal of this research was to develop, test and optimize a batch microwave system using traditional and alternate non-food feedstocks. Microwave assisted extraction (MAE) of oil from conventional feedstocks (soybeans and rice bran) and an alternative feedstock (Chinese tallow tree (CTT) seeds) was carried out. The study concluded that MAE of oil ...


Modeling And Simulation For Shape Memory Polymer Based Self-Healing Syntactic Foam, Wei Xu 2010 Louisiana State University and Agricultural and Mechanical College

Modeling And Simulation For Shape Memory Polymer Based Self-Healing Syntactic Foam, Wei Xu

LSU Doctoral Dissertations

Syntactic foams, renowned for their low density and high mechanical properties, are enjoying continuing growth in various civilian and military sectors. However, like laminated composites, foam cored structures are vulnerable to impact damages and suffering from inabilities in repairing macro-scale cracks. A self-healing mechanism for structural damage is genuinely desired. A recent development in self-healing structural damage is a two-step close then heal (CTH) scheme proposed by Li and Nettles [1] and elucidated by Li and Uppu [2], by mimicking the self-healing process of human skin. This concept has been further demonstrated in Nji and Li’s work [3] that ...


X-Ray Absorption Spectroscopy Applied To Mixed-Metal Iron-Based Fischer-Tropsch Catalysts, Andrew Allen Campos 2010 Louisiana State University and Agricultural and Mechanical College

X-Ray Absorption Spectroscopy Applied To Mixed-Metal Iron-Based Fischer-Tropsch Catalysts, Andrew Allen Campos

LSU Doctoral Dissertations

Synthetic fuels derived from methane, coal or biomass are essential in addressing future transportation fuel demands which are expected to exceed petroleum-derived capacities. The Fischer-Tropsch synthesis (FTS) is the most studied technique for the conversion of coal or biomass-derived syngas into transportation fuels. Fe-based catalysts are typically used for the FTS of biomass and/or coal-derived syngas due to: the relatively low cost of iron, water-gas shift activity, and low methane selectivity at industrial FTS conditions. Fe/Cu/SiO2 Fischer-Tropsch catalysts promoted with Cr, Mn, Mo, W, or Zr were studied in-situ, using Fe K-edge TPR XANES (temperature programmed reduction ...


Characterization Of Composite Piezoelectric Materials For Smart Joint Applications, Hari Prasad Konka 2010 Louisiana State University and Agricultural and Mechanical College

Characterization Of Composite Piezoelectric Materials For Smart Joint Applications, Hari Prasad Konka

LSU Master's Theses

Piezoelectric materials have the ability to provide desired transformation from mechanical to electrical energy and vice versa. When a mechanical force is applied to the piezoelectric material an electrical voltage is generated and when an electrical voltage is applied to the piezoelectric material it gets strained or deformed. Owing to these characteristics piezoelectric materials can be used as a sensor, an actuator, as well as a power generation unit. The high brittleness property of the original piezoelectric material is one of the major constraints in using them in the engineering applications. In order to overcome this disadvantage the composite piezoelectric ...


Effect Of Ultrasonic Pretreatment On Methane Production Potential From Corn Ethanol Coproducts, Wei Wu-Haan, Robert T. Burns, Lara B. Moody, Cody John Hearn, David A. Grewell 2010 Iowa State University

Effect Of Ultrasonic Pretreatment On Methane Production Potential From Corn Ethanol Coproducts, Wei Wu-Haan, Robert T. Burns, Lara B. Moody, Cody John Hearn, David A. Grewell

Agricultural and Biosystems Engineering Publications

This article addresses the biochemical methane potential (BMP) production from anaerobic digestion of corn-ethanol coproducts including dried distiller grain with solubles (DDGS), distiller's wet grains (DWG), thin stillage, and condensed distiller's solubles (CDS) as well as evaluating the effects of ultrasonic pretreatment on methane production from these feedstocks. Ultrasonic pretreatment was applied with three amplitude settings of 33% (52.8 µmpp), 66% (105.6 µmpp), and 100% (160 µmpp) as well as five time settings (10, 20, 30, 40, and 50 s) to each of the four coproducts prior to conducting benchtop BMP trials. Ultrasonic pretreatment reduced mean ...


Real-Time Pressure And Flow Dynamics Due To Boom Section And Individual Nozzle Control On Agricultural Sprayers, Ajay Sharda, John P. Fulton, Timothy P. McDonald, Wesley C. Zech, Matthew J. Darr, Christian J. Brodbeck 2010 Auburn University

Real-Time Pressure And Flow Dynamics Due To Boom Section And Individual Nozzle Control On Agricultural Sprayers, Ajay Sharda, John P. Fulton, Timothy P. Mcdonald, Wesley C. Zech, Matthew J. Darr, Christian J. Brodbeck

Agricultural and Biosystems Engineering Publications

Most modern spray controllers when coupled with a differential global positioning system (DGPS) receiver can provide automatic section or swath (boom section or nozzle) control capabilities that minimize overlap and application into undesirable areas. This technology can improve application accuracy of pesticides and fertilizers, thereby reducing the number of inputs while promoting environmental stewardship. However, dynamic system response for sprayer boom operation, which includes cycling or using auto-swath technology, has not been investigated. Therefore, a study was conducted to develop a methodology and subsequently perform experiments to evaluate tip pressure and system flow variations on a typical agricultural sprayer equipped ...


Optimal Coverage Path Planning For Arable Farming On 2d Surfaces, Jian Jin, Lie Tang 2010 Iowa State University

Optimal Coverage Path Planning For Arable Farming On 2d Surfaces, Jian Jin, Lie Tang

Agricultural and Biosystems Engineering Publications

With the rapid adoption of automatic guidance systems in agriculture, automated path planning has great potential to further optimize field operations. Field operations should be done in a manner that minimizes time and travel over field surfaces and should be coordinated with specific field operation requirements, machine characteristics, and topographical features of arable lands. To reach this goal, an intelligent coverage path planning algorithm is the key. To determine the full coverage pattern of a given field by using boustrophedon paths, it is necessary to know whether to and how to decompose a field into sub-regions and how to determine ...


Characterization Of Two Types Of Covered Creep Boxes For Piglet Usage And Piglet Performance In A Naturally Ventilated Swine Farrowing Building, Zhao Bing Gu, Hongwei Xin, Chaoyuan Wang, Zhengxiang Shi, Wei Cao, Zuohua Liu, Baoming Li 2010 Chongqing Academy of Animal Sciences

Characterization Of Two Types Of Covered Creep Boxes For Piglet Usage And Piglet Performance In A Naturally Ventilated Swine Farrowing Building, Zhao Bing Gu, Hongwei Xin, Chaoyuan Wang, Zhengxiang Shi, Wei Cao, Zuohua Liu, Baoming Li

Agricultural and Biosystems Engineering Publications

This study investigates two types of covered piglet creep boxes in a naturally ventilated swine farrowing building with regards to air quality (ammonia and carbon dioxide levels), piglet usage of the box, and piglet health and performance. The covered creep boxes featured either double plastic curtains along the entire width of the box (designated as the DC box) or an arc-shaped access opening occupying about one-third of the box width (designated as the AO box). The study was conducted with 12 farrowing crates, six per box regimen, during wintertime. Continuous, 24-h video observations of the piglet behaviors were made at ...


Assessing The Suitability Of Coagulation Pretreatment On Poultry Processing Wastewater For Optimized Dissolved Air Flotation, Adam James Dassey 2010 Louisiana State University and Agricultural and Mechanical College

Assessing The Suitability Of Coagulation Pretreatment On Poultry Processing Wastewater For Optimized Dissolved Air Flotation, Adam James Dassey

LSU Master's Theses

Eleven metal coagulants and one polyelectrolyte were assessed on their suitability for assisting a dissolved air flotation (DAF) system in treating poultry processing wastewater. The DAF unit was designed to maximize the microbubble production by varying the pressure, temperature, hydraulic retention time, and air flow parameters. The maximum microbubble flow from the designed system produced 30 mL of air per L of water. This value was considered low compared to other systems, but attempts to increase the microbubble volume in the current system beyond this value resulted in the coalescing of microbubbles due to turbulent conditions. Jar tests were used ...


Biomechanical Evaluation Of Modified Track Shoes, Marlon Alberetos Greensword 2010 Louisiana State University and Agricultural and Mechanical College

Biomechanical Evaluation Of Modified Track Shoes, Marlon Alberetos Greensword

LSU Master's Theses

Track and field runners, especially sprinters and mid-distance runners, face many problems due to walking in spike shoes. Due to the fact that track and field spike shoes are designed specifically for running, the runner’s feet remain in an uncomfortable, flexed position when walking between workouts and races. Problems caused by the dangerous foot-positioning include, but are not limited to, the following: back pain, shin splints, bone spurs, blisters, and overall decreased level of running performance. Over time, runners wearing improper footwear for walking may face chronic injuries such as plantar fasciitis, shin splints, Achilles tendinitis, chondromalacia, and iliotibial ...


Carbon Nanotube Interconnect Modeling For Very Large Scale Integrated Circuits, Yao Xu 2010 Louisiana State University and Agricultural and Mechanical College

Carbon Nanotube Interconnect Modeling For Very Large Scale Integrated Circuits, Yao Xu

LSU Doctoral Dissertations

In this research, we have studied and analyzed the physical and electrical properties of carbon nanotubes. Based on the reported models for current transport behavior in non-ballistic CNT-FETs, we have built a dynamic model for non-ballistic CNT-FETs. We have also extended the surface potential model of a non-ballistic CNT-FET to a ballistic CNT-FET and developed a current transport model for ballistic CNT-FETs. We have studied the current transport in metallic carbon nanotubes. By considering the electron-electron interactions, we have modified two-dimensional fluid model for electron transport to build a semi-classical one-dimensional fluid model to describe the electron transport in carbon ...


Bioelectric Applications For Treatment Of Melanoma, Stephen J. Beebe, Karl H. Schoenbach, Richard Heller 2010 Old Dominion University

Bioelectric Applications For Treatment Of Melanoma, Stephen J. Beebe, Karl H. Schoenbach, Richard Heller

Bioelectrics Publications

Two new cancer therapies apply bioelectric principles. These methods target tumor structures locally and function by applying millisecond electric fields to deliver plasmid DNA encoding cytokines using electrogene transfer (EGT) or by applying rapid rise-time nanosecond pulsed electric fields (nsPEFs). EGT has been used to locally deliver cytokines such as IL-12 to activate an immune response, resulting in bystander effects. NsPEFs locally induce apoptosis-like effects and affect vascular networks, both promoting tumor demise and restoration of normal vascular homeostasis. EGT with IL-12 is in melanoma clinical trials and nsPEFs are used in models with B16F10 melanoma in vitro and in ...


On The Radiation-Induced Soft Error Performance Of Hardened Sequential Elements In Advanced Bulk Cmos Technologies, Norbert Seifert, Vinod Ambrose, B Gill, Q Shi, R Allmon, Charles H. Recchia, S Mukherjee, N Nassif, J Krause, J Pickholtz, A Balasubramanian 2010 Worcester Polytechnic Institute

On The Radiation-Induced Soft Error Performance Of Hardened Sequential Elements In Advanced Bulk Cmos Technologies, Norbert Seifert, Vinod Ambrose, B Gill, Q Shi, R Allmon, Charles H. Recchia, S Mukherjee, N Nassif, J Krause, J Pickholtz, A Balasubramanian

Physics Faculty Publications

No abstract provided.


Explaining Cache Ser Anomaly Using Relative Due Avf Measurement, Arijit Biswas, Charles H. Recchia, Shubhendu S. Mukherjee, Vinod Ambrose, Leo Chan, Aamer Jaleel, Mike Plaster, Norbert Seifert 2010 Worcester Polytechnic Institute

Explaining Cache Ser Anomaly Using Relative Due Avf Measurement, Arijit Biswas, Charles H. Recchia, Shubhendu S. Mukherjee, Vinod Ambrose, Leo Chan, Aamer Jaleel, Mike Plaster, Norbert Seifert

Physics Faculty Publications

No abstract provided.


Experimental Studies On The Plasma Bullet Propagation And Its Inhibition, Erdinc Karakas, Mounir Laroussi 2010 Old Dominion University

Experimental Studies On The Plasma Bullet Propagation And Its Inhibition, Erdinc Karakas, Mounir Laroussi

Electrical & Computer Engineering Faculty Publications

Plasma bullets generated by atmospheric pressure low temperature plasma jets have recently been an active research topic due to their unique properties and their enhanced plasma chemistry. In this paper, experimental insights into the plasma bullet lifetime and its velocity are reported. Data obtained from intensified charge-coupled device camera and time-resolved optical emission spectroscopy (OES) elucidated the existence of a weakly ionized channel between the plasma bullet and its source (such as the plasma pencil). Factors responsible for the inhibition of the propagation of the bullet, such as low helium mole fraction, the magnitude of the applied voltage, and the ...


Destruction Of Α -Synuclein Based Amyloid Fibrils By A Low Temperature Plasma Jet, Erdinc Karakas, Agatha Munyanyi, Lesley Greene, Mounir Laroussi 2010 Old Dominion University

Destruction Of Α -Synuclein Based Amyloid Fibrils By A Low Temperature Plasma Jet, Erdinc Karakas, Agatha Munyanyi, Lesley Greene, Mounir Laroussi

Electrical & Computer Engineering Faculty Publications

Amyloid fibrils are ordered beta-sheet aggregates that are associated with a number of neurodegenerative diseases such as Alzheimer and Parkinson. At present, there is no cure for these progressive and debilitating diseases. Here we report initial studies that indicate that low temperature atmospheric pressure plasma can break amyloid fibrils into smaller units in vitro. The plasma was generated by the plasma pencil, a device capable of emitting a long, low temperature plasma plume/jet. This avenue of research may facilitate the development of a plasma-based medical treatment.


Design Of Organic Tandem Solar Cells Using Pcpdtbt: Pc61 Bm And P3ht: Pc71bm, Gon Namkoong, Patrick Boland, Keejoo Lee, James Dean 2010 Old Dominion University

Design Of Organic Tandem Solar Cells Using Pcpdtbt: Pc61 Bm And P3ht: Pc71bm, Gon Namkoong, Patrick Boland, Keejoo Lee, James Dean

Electrical & Computer Engineering Faculty Publications

We conducted optical and electrical simulations with the goal of determining the optimal design for conjugated polymer-fullerene tandem solar cells using poly[2,6-(4,4-bis-(2-ethylhexyl)- 4H-cyclopenta[2,1- b;3,4- b′] dithiophene)-alt-4,7-(2,1,3-benzothiadiazole)] (PCPDTBT): [6,6]-phenyl C61 butyric acid methyl ester (PC61 BM) as a bottom cell and poly(3-hexylthiophene) (P3HT): [6,6]-phenyl C71 butyric acid methyl ester (PC71BM) as a top cell. The effects of photon density, absorption, balanced and unbalanced charge carrier transport, and bimolecular recombination in the two subcells were incorporated into the ...


Formation And Coarsening Of Ag(110) Bilayer Islands On Nial(110): Stm Analysis And Atomistic Lattice-Gas Modeling, Yong Han, Barış Ünal, Dapeng Jing, Feili Qin, Cynthia J. Jenks, Da-Jiang Liu, Patricia A. Thiel, James W. Evans 2010 Iowa State University

Formation And Coarsening Of Ag(110) Bilayer Islands On Nial(110): Stm Analysis And Atomistic Lattice-Gas Modeling, Yong Han, Barış Ünal, Dapeng Jing, Feili Qin, Cynthia J. Jenks, Da-Jiang Liu, Patricia A. Thiel, James W. Evans

Chemistry Publications

Scanning tunneling microscopy analysis of the initial stages of film growth during deposition of Ag on NiAl(110) reveals facile formation of bilayer Ag(110) islands at temperatures of 130 K and above. Annealing subsequent to deposition at 130 K induces coarsening of the bilayer island distribution. The thermodynamic driving force for bilayer island formation reflects a lower relative surface energy for films of even layer thicknesses. This feature derives from quantum size effects due to electron confinement in the Ag film. The kinetics of island formation and relaxation is controlled by terrace and edge-diffusion barriers, detachment barriers, interlayer diffusion ...


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