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2007

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Effects Of Predator Activity On The Nesting Of American Black Ducks And Other Birds On Barrier Islands In The Mid-Atlantic Coast, Brian Joseph Arquilla Jan 2007

Effects Of Predator Activity On The Nesting Of American Black Ducks And Other Birds On Barrier Islands In The Mid-Atlantic Coast, Brian Joseph Arquilla

LSU Master's Theses

Landscape change throughout North America has resulted in heightened nest predator population and declining avian productivity. Essential to establishing effective management design is an understanding of differential predation pressure among avian groups as group specific responses to predation impact may exist. The objective of this study was to examine the efficacy of predator trapping on the nest success and density of ground nesting avifauna in 2004-2005 in the Virginia Coast Reserve, specifically dabbling ducks, Canada Goose and Willet. Second, we determine the impact of predation on ground nesting birds by relating indices of predator abundance to nest density and nest …

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The Effects Of Nitrogen On Sugarcane Sucker Production And Sugar Yield, John Eriton Richard Jan 2007

The Effects Of Nitrogen On Sugarcane Sucker Production And Sugar Yield, John Eriton Richard

LSU Master's Theses

ABSTRACT Sugarcane suckers, otherwise known as bullshoots or water sprouts have been reported in south Louisiana. Suckers are physiologically immature shoots and tend to accumulate less sucrose compared to mature stalks. Suckers may affect productivity by increasing biomass while contributing little to sucrose content. An understanding of the environmental and cultural factors responsible for sugarcane sucker production in Louisiana may provide answers that could be useful in minimizing its negative effect on production. The study objective was to investigate the effects of nitrogen (N) treatments on sugarcane and sugarcane sucker production in variety HoCP 85-845 under Louisiana growing conditions. This …

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Direct White Sugar Production: Optimization And Chemical Regeneration Of Fixed-Bed Activated Carbon Adsorbers, Raul Alejandro Cortes Jan 2007

Direct White Sugar Production: Optimization And Chemical Regeneration Of Fixed-Bed Activated Carbon Adsorbers, Raul Alejandro Cortes

LSU Master's Theses

A system for the direct production of white sugar from clarified sugar cane juice in a raw sugar factory has been developed at the Audubon Sugar Institute. This Direct White Sugar Production (DWiSP) system employs a series of columns packed with adsorbent media. Activated carbon is used in the first column(s) as a filter and bulk decolorizer. Ion exchange resins are then used to remove ash and remaining color. Batch testing was performed in order to determine equilibrium parameters. An analytical model was utilized in conjunction with column loading tests to determine dynamic characteristics of the carbon adsorber for use …

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Fabrication Of Single Walled Carbon Nanotube (Sw-Cnt) Cantilevers For Chemical Sensing, Jui-Ching Hsu Jan 2007

Fabrication Of Single Walled Carbon Nanotube (Sw-Cnt) Cantilevers For Chemical Sensing, Jui-Ching Hsu

LSU Master's Theses

With the discovery of carbon nanotubes (CNTs), many applications have been implemented based on their unique electronic, mechanical, chemical and optoelectronic properties. One area of applications is in gas sensors for detecting, oxygen, flammable and toxic gases. In our work, the focus is on the fabrication of carbon nanotube (CNT) cantilever sensors for integration with CMOS readout chip which offer increased sensitivity. The higher surface-to-bulk ratio enhances the property and performance of the gas sensor by nanocantilevers. In this work, we present the detection method based on the change in capacitance of the single walled carbon nanotube (SWCNT) cantilever. Carbon …

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A Geographical Investigation Of Chagas' Disease Risk In The Community Of La Brea, Guatemala, Gerardo J. Boquin Jan 2007

A Geographical Investigation Of Chagas' Disease Risk In The Community Of La Brea, Guatemala, Gerardo J. Boquin

LSU Master's Theses

This thesis will display how the use of a GIS is an important tool in understanding geographic patterns of Chagas' disease vector risk in a rural community in Guatemala. This is an important topic of investigation as Chagas' disease is the leading cause of heart failure in rural Latin America, and yet study has been limited due to a prioritization of national resources to urban diseases. Obviously this can have a severe impact on rural areas, especially if they already lack adequate health care provision. As a response to this deficiency, a collaboration between the Laboratory of Entomology and Applied …

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Evaluating The Effect Of Two Commercial Antimicrobial Products On Salmonella Spp. In The Aquatic Habitat Of The Red-Eared Slider Turtle (Trachemys Scripta Elegans), Trevor Theadore Zachariah Jan 2007

Evaluating The Effect Of Two Commercial Antimicrobial Products On Salmonella Spp. In The Aquatic Habitat Of The Red-Eared Slider Turtle (Trachemys Scripta Elegans), Trevor Theadore Zachariah

LSU Master's Theses

Turtle-associated salmonellosis was recognized as a public health concern in the 1960’s, particularly due to an increase in the incidence of disease among children. In response to the public health threat, the United States Food and Drug Administration (FDA) implemented regulations in 1975 restricting the sale of turtle eggs and turtles with a carapace length less than 10.2 cm. Since that time, attempts to eliminate Salmonella from turtles using antibiotics have been unsuccessful and lead to antibiotic resistant strains of Salmonella on turtle farms. Recent work has focused on identifying non-antibiotic products to suppress or eliminate Salmonella and reverse the …

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Optimum Energy Allocation For Detection In Wireless Sensor Networks, Krishna Kishore Gunturu Jan 2007

Optimum Energy Allocation For Detection In Wireless Sensor Networks, Krishna Kishore Gunturu

LSU Master's Theses

The problem of binary hypothesis testing in a wireless sensor network is studied in the presence of noisy channels and for non-identical sensors. We have designed a mathematically tractable fusion rule for which optimal energy allocation for individual sensors can be achieved. In this thesis we considered two methods for transmitting the sensor observations; binary modulation and M-ary modulation. In binary modulation we are able to allocate the energy among the sensors and protect the individual quantized bits where as the M-ary modulation provides optimum energy allocation only among the sensors. The goal is to design a fusion rule and …

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Impact And Interaction Of Samea Multiplicalis (Lepidoptera: Pyralidae) And Cyrtobagous Salviniae (Coleoptera: Curculionidae) On Salvinia Minima In South Louisiana And The Foraging Behavior Of Solenopsis Invicta (Hymenoptera: Formicidae) On Salvinia Minima, Sunil Tewari Jan 2007

Impact And Interaction Of Samea Multiplicalis (Lepidoptera: Pyralidae) And Cyrtobagous Salviniae (Coleoptera: Curculionidae) On Salvinia Minima In South Louisiana And The Foraging Behavior Of Solenopsis Invicta (Hymenoptera: Formicidae) On Salvinia Minima, Sunil Tewari

LSU Master's Theses

A field study was conducted in 2005 and 2006 to evaluate the impact and interaction of the herbivores Cyrtobagous salviniae Calder and Sands and Samea multiplicalis Guenee on common salvinia, Salvinia minima Baker in south Louisiana. It was a completely randomized experimental design in which treatments consisted of C. salviniae and S. multiplicalis feeding on common salvinia both independently and together along with a control. Our study revealed that treatments consisting of C. salviniae and S .multiplicalis feeding both independently and together had a significant impact on the biomass of common salvinia. Sampling done in October of both 2005 and …

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Influence Of Tumor Necrosis Factor-Alpha And Minocycline On Microglia And Macrophage Activation During Polytropic Retrovirus Infection, Meryll E. Corbin Jan 2007

Influence Of Tumor Necrosis Factor-Alpha And Minocycline On Microglia And Macrophage Activation During Polytropic Retrovirus Infection, Meryll E. Corbin

LSU Master's Theses

Microglia/macrophage activation has been associated with the pathogenesis of various neurological diseases including human immunodeficiency virus encephalitis, transmissible spongiform encephalitis, and Alzheimer's disease (AD). In vitro studies have indicated a role for TNFα in activating these cells which leads to their migration, proliferation, and secretion of proinflammatory cytokines and chemokines that may potentially damage brain tissue. In the current study, we analyzed the phenotype of microglia and macrophages enriched from wild type and TNFα deficient mice infected with a neurovirulent murine retrovirus. Although TNF receptors CD120a and CD120b were expressed on both microglia and macrophage population, unaltered by either retrovirus …

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Development Of A Biomass Transducer For Automated Microalgal Bioreactors, Amar Shivaram Hegde Jan 2007

Development Of A Biomass Transducer For Automated Microalgal Bioreactors, Amar Shivaram Hegde

LSU Master's Theses

A highly sensitive miniaturized biomass transducer is necessary for continuous and reliable monitoring of the microalgal biomass in a computer controlled, automated microalgal bioreactor. Previous known methods to determine microalgal biomass applicable in these bioreactors are based on single wavelength turbidimetric or fluorescence. The objectives of this research were to (1) determine the light absorption characteristics of some commercially applicable microalgae in the electromagnetic wavelength range of 200-800 nm (2) design and construct a new miniaturized biomass transducer (3) process the transducer output to correlate with the biomass. Wavelength sensitivity analysis was conducted on the commercially important microalgal species - …

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Deficits In Social Skills And Feeding Behaviors Associated With Adults Diagnosed With Autistic Disorder Living In An Institutionalized Setting, Cindy Terlonge Graham Jan 2007

Deficits In Social Skills And Feeding Behaviors Associated With Adults Diagnosed With Autistic Disorder Living In An Institutionalized Setting, Cindy Terlonge Graham

LSU Master's Theses

Autistic disorder, a syndrome beginning in infancy and persisting into adulthood, has captured the attention of researchers and clinicians alike. Although this disorder has been studied since the mid-1940s, there is a lack of literature addressing certain adaptive skills in adults with autism. The aim of this study was to examine the differences in social and feeding skills between individuals with and without autistic disorder. Given the importance of acquiring these skills to facilitate proper adjustment and decrease potential health risks, better understanding of these behaviors in persons with autism is warranted. Participants comprised three separate groups: an autism group, …

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An Assessment Of The Risk Mapping System For The Use Of Managing Loblolly Pine Decline Sites Within Red-Cockaded Woodpecker Habitat, Roger Dale Menard Jan 2007

An Assessment Of The Risk Mapping System For The Use Of Managing Loblolly Pine Decline Sites Within Red-Cockaded Woodpecker Habitat, Roger Dale Menard

LSU Master's Theses

A decline of loblolly pine (Pinus taeda L.), characterized by expanding areas of declining and dead trees, has become prevalent at Fort Benning, Georgia. A 3 year study was conducted to determine the kinds of fungi, insects, and site disturbances associated with this problem. The insects Dendroctonus terebrans, Hylastes salebrosus, Hylastes tenuis, Pachylobius picivorus and Hylobius pales were significantly more abundant in symptomatic than in asymptomatic loblolly pine plots. These root and lower stem-infesting insects consistently carried the fungi Leptographium terebrantis, L. procerum, and L. serpens. Root sampling revealed high levels of root damage and mortality, staining and infection with …

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Environmental Factors Affecting The Distribution Of Native And Invasive Aquatic Plants In The Atchafalaya River Basin, Louisiana, U.S.A., Rachel Cathleen Walley Jan 2007

Environmental Factors Affecting The Distribution Of Native And Invasive Aquatic Plants In The Atchafalaya River Basin, Louisiana, U.S.A., Rachel Cathleen Walley

LSU Master's Theses

Over the last century, the aquatic macrophyte community of the Atchafalaya River Basin (ARB) has become increasingly dominated by invasive species. I used digital photography and GIS software to determine ARB macrophyte community composition by measuring percent cover of each plant species within five 0.25-m2 quadrats sampled from 108 sites in 2005 and 103 sites in 2006. Macrophyte community data and measurements of soil and water physicochemistry at each site were used to investigate environmental associations of the macrophytes inhabiting bayou, lake, excavated canal, and swamp habitats. Analyses indicated substantial differences in physicochemical conditions among habitats, but none of the …

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Analyzing The Cost Of Harvesting And The Economic Structure Of Florida Grouper Fishery, I. Cristian Nedelea Jan 2007

Analyzing The Cost Of Harvesting And The Economic Structure Of Florida Grouper Fishery, I. Cristian Nedelea

LSU Master's Theses

This study uses a translog cost function to investigate the technical and economic relationships present among a sample of Florida grouper longline vessels. The existence of jointness-in-inputs and non-separability between inputs and outputs suggests that resource management should be based on multiproduct production theory, and that explicit recognition of the economic interactions among species should be incorporated in any regulatory process. The cross-price elasticities of input demands showed substitution relationships between input pairs, implying that imposed regulation on the single input will be compensated for by increases in the other inputs. Furthermore, model results showed apparently substantial economies of scope, …

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Magnetically Induced Release Of Fluorescein Isothiocyanate (Fitc) From Polymer Nanoparticle Composites (Pncs), Michelle Urbina Jan 2007

Magnetically Induced Release Of Fluorescein Isothiocyanate (Fitc) From Polymer Nanoparticle Composites (Pncs), Michelle Urbina

LSU Master's Theses

Magnetically induced drug release can be used as a site-specific, minimally invasive pharmaceutical treatment. Its purpose is to increase the efficacy of drug therapies to diseased or damaged tissue and to decrease the amount of unnecessary damage to healthy, surrounding tissue. To prove the concept of drug release by a magnetic field, this study focused on the release of a fluorescent molecule from magnetic polymeric nanoparticle composites (PNCs) via induction of an alternating current (AC) magnetic field. Fluorescent magnetic PNCs used were 250 ?m or less in size, and were made of poly(methyl methacrylate) (PMMA) containing either the magnetic material …

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Production Well Operations Optimization In Water Distribution System Using Genetic Algorithm, Vineet Katiyar Jan 2007

Production Well Operations Optimization In Water Distribution System Using Genetic Algorithm, Vineet Katiyar

LSU Master's Theses

The City of Chandler, Arizona lies in semi-arid area and the water resources management has been a major concern by the State citizen. There is always a need of optimizing the available water resources when the rate of demand constantly beats the rate of replenishment. In this study we have developed a management model to link the Chandler water distribution model (EPANET) with the Chandler groundwater flow model (MODFLOW) under an optimization framework (Genetic algorithm). The EPANET model supplied by the Chandler city municipal authority has several improper setting (pumping schedules, valves settings, pressure zones etc.). The original model has …

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The Use Of A Chiral Fluorescent Resorcinarene For The Enantiomeric Recognition Of Amino Acids, Gerald I. Richard Jan 2007

The Use Of A Chiral Fluorescent Resorcinarene For The Enantiomeric Recognition Of Amino Acids, Gerald I. Richard

LSU Master's Theses

The spectroscopic properties of a chiral boronic acid based resorcinarene macrocycle employed for chiral analysis were investigated. Specifically, the emission and excitation characteristics of tetraarylboronate resorcinarene macrocycle (TBRM) and its quantum yield were evaluated. The chiral selector TBRM was investigated as a chiral reagent for the enantiomeric discrimination of amino acids using steady-state fluorescence spectroscopy. Chiral recognition of amino acids in the presence of the macrocycle was based on diastereomeric complexes. Results demonstrated that TBRM had better chiral discrimination ability for lysine as compared to the other amino acids. Partial-least-squares regression modeling (PLS-1) of spectral data for macrocycle-lysine host-guest complexes …

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Evaluation Of Three Tractor-Guidance Methods For Parallel Swathing At Two Field Speeds, Garris Hudson, Robby Shofner, George Wardlow, Donald Johnson Jan 2007

Evaluation Of Three Tractor-Guidance Methods For Parallel Swathing At Two Field Speeds, Garris Hudson, Robby Shofner, George Wardlow, Donald Johnson

Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences

This study compared the accuracy (mean error and rms error) and precision (standard deviation of error) of three tractor-guidance methods (foam-marker, light-bar, and assisted-steering systems) at two field speeds (5.6 – and 11.5 km/h) for parallel swathing operations. Eighty-four replications of each combination of guidance method and field speed were conducted between 15 October and 22 December 2006 (504 total field passes). The foam-marker system was found to be significantly less accurate [larger mean error (p < .0001) and had a larger rms error (p < .0001)] than either the light-bar or the assisted-steering system. There was no significant difference in mean error (p = .6718) or rms error (p = .8841) by field speed. There was a significant interaction between guidance method and field speed for both mean error (p = .0009) and rms error (p = .003). Mean and rms errors for the foam-marker and the assisted-steering systems increased at higher field speed, while the mean and rms errors for the light-bar system decreased at higher speed. The assisted-steering system had a significantly lower (p = .0164) standard deviation of error (higher precision) than the foam-marker or the light-bar systems. There was no significant difference in the standard deviation of error by field speed (p = .6258) or by the interaction of guidance method and field speed (p = .2748).

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Evaluating Precision Agricultural Technologies In A Louisiana Cotton Insect Pest Management System, Joshua Heath Temple Jan 2007

Evaluating Precision Agricultural Technologies In A Louisiana Cotton Insect Pest Management System, Joshua Heath Temple

LSU Master's Theses

A variable rate pesticide application system was developed and tested during 2001 for an agricultural aircraft in Louisiana. Using technology available to the agricultural aviation industry, a variable rate prescription of insecticide was successfully applied to a cotton field in 2002. These studies compared the efficacy and value of spatially variable insecticide (SVI) applications based on yield maps to the producer standard, whole-field broadcast treatments. Insecticide prescriptions were created from historical yield and production data. Treatments included whole-field broadcast sprays, yield-based SVI sprays, and profit-based SVI sprays. Twenty-two SVI applications were made to test fields from 2002-2005 using two aircraft …

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Reproductive And Metabolic Effects Of Recombinant Equine Leptin On Seasonally Anovulatory Mares, Pamela Boliew Mitcham Jan 2007

Reproductive And Metabolic Effects Of Recombinant Equine Leptin On Seasonally Anovulatory Mares, Pamela Boliew Mitcham

LSU Master's Theses

Mares of poor body condition have low plasma leptin concentrations, while obese mares have the highest concentrations. Leptin is a primary signal of body condition to the brain in other species; therefore, low leptin concentrations in thin mares could contribute to their extended anovulatory period in winter compared to obese mares. The current experiment was designed to determine whether recombinant equine leptin, administered to seasonally anovulatory mares, would induce ovarian activity and ovulation in the winter. Leptin effects on metabolism were also studied. Beginning January 7, leptin-treated mares (n = 9) received daily i.m. injections of 10 mg recombinant equine …

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Student Social Workers' Attitudes About Domestic Violence And Implications For Social Work Education, Vonnie L. Hawkins Jan 2007

Student Social Workers' Attitudes About Domestic Violence And Implications For Social Work Education, Vonnie L. Hawkins

LSU Master's Theses

This descriptive, correlational and exploratory study used the Domestic Violence Blame Scale and Domestic Violence Myth Acceptance Scale, with questions suggested by the literature, to examine attitudes about domestic violence, knowledge and self-reported preparedness of a purposive sample of student social workers (N=236) in a southern state. An anonymous online web-based survey was used for data collection, and universities distributed the survey hyperlink directly to their students. Response rate was approximately 22% out of an estimated 1060 students who were reported to have received the hyperlink by their universities. Lower victim blame and myth acceptance scores were observed in students …

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The Art Of Perception: Robert Irwin's Central Garden At The J. Paul Getty Center, Jennifer Kay Zell Jan 2007

The Art Of Perception: Robert Irwin's Central Garden At The J. Paul Getty Center, Jennifer Kay Zell

LSU Master's Theses

In this study of The Central Garden at the J. Paul Getty Center was found evidence that the Central Garden designed by Robert Irwin is a postmodern garden. Beginning with an evaluation and description of the individual elements and conditions of the garden, the study then explores the larger body of artistic work produced by Irwin. This investigation also extrapolates how the ideas of modernism and postmodernism have been applied to past works of landscape architecture. The precedents provide a basis for interpretation and analysis of the Central Garden. Direct observation of visitors at the Central Garden provided evidence of …

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Pre-Treatment Of Dynamically Varying Waste Gas Concentrations Using Activated Carbon Prior To Biofiltration: Effect Of Cycle Length On Degree Of Load Equalization, Kodi L. Collins Jan 2007

Pre-Treatment Of Dynamically Varying Waste Gas Concentrations Using Activated Carbon Prior To Biofiltration: Effect Of Cycle Length On Degree Of Load Equalization, Kodi L. Collins

LSU Master's Theses

Dynamically varying waste gas concentrations pose challenges to the operation and design of air pollution control techniques such as biofilters. Although design approaches are becoming well established for biofilters treating gases containing VOC concentrations that are constant as a function of time, many industrial processes emit gas streams contaminated with volatile organic compounds at concentrations that fluctuate with time. Application of an effective load equalization technique could eliminate some challenges associated with fluctuating pollutant concentrations. Recent research has demonstrated that granular activated carbon (GAC) can serve as a passively controlled system to provide load-equalization as a pre-treatment prior to biofiltration. …

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Using Hurricane Ivan As A Modern Analog In Paleotempestology: Lake Sediment Studies And Environmental Analysis In Gulf Shores, Alabama, Thomas Bianchette Jan 2007

Using Hurricane Ivan As A Modern Analog In Paleotempestology: Lake Sediment Studies And Environmental Analysis In Gulf Shores, Alabama, Thomas Bianchette

LSU Master's Theses

Paleotempestology is a young field in the science community, aimed at discovering evidence of past catastrophic hurricanes by analyzing geological proxy records, mostly overwash sand layers derived from barrier beach inundation. Gulf State Park in Gulf Shores, Alabama, is an ideal location to study this emerging science due to its unique geography of having three coastal lakes just north of a long beach system. Hurricane Ivan, a Category 3 storm, made landfall at Gulf Shores, Alabama, on 16 September 2004, with 130 mph winds. It was expected that the overwash fan created by the storm surge was sufficient to reach …

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Cryopreservation Of White-Tail Deer Epididymal Sperm For Artificial Insemination, Jesse Ray Saenz Jan 2007

Cryopreservation Of White-Tail Deer Epididymal Sperm For Artificial Insemination, Jesse Ray Saenz

LSU Master's Theses

The ability to cryopreserve epididymal sperm from mature postmortem bucks has long been of interest to both wildlife conservationists and deer ranchers. Increased understanding of the cryobiology of epididymal sperm from a non domestic species, such as White-tail deer, could aid in development of future protocols to assist in the preservation of endangered species. In Experiment I, results showed that after cooling postmortem bull testes for 22 hours, no significant difference was noted between sperm parameters of epididymal sperm collected at room temperature or at a cool enviorment. In Experiment II, it was shown that White-tail deer sperm could be …

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Determinants Of The Onset Of Disability In Old Age, Kayla Fontenot Jan 2007

Determinants Of The Onset Of Disability In Old Age, Kayla Fontenot

LSU Master's Theses

With a rapidly aging population, maximizing independent living among the elderly is a growing concern. The inability to perform normal basic care activities interferes with an older individual's ability to live independently. In this study, I examine the onset of disability among elderly Americans using the 2002 and 2004 waves of the Health and Retirement Survey (HRS). In examining the explanatory power of both the life course perspective and the medical model, I find that the medical model is better able to explain onset of disability for males while the life course perspective prevails when explaining onset of disability among …

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Multifunctional Ligands For Supramolecular Chemistry, James Kakoullis Jan 2007

Multifunctional Ligands For Supramolecular Chemistry, James Kakoullis

LSU Master's Theses

Metal-organic frameworks (MOFs) are the primary focus of the Maverick research group, almost exclusively with the acac moeity. Before such MOFs can be attempted, multifunctional ligands of the appropriate geometry for the desired MOFs first must be synthesized. In this thesis, the synthesis and characterization of two new β-diketone ligands, specifically, Re(CO)3Cl(PyacH)2, 2.2, Pphac3H3, 1.23, and its oxide 3.6, are described. Also in this thesis, attempts to synthesize other new MOFs will be discussed. The MOF for which Re(CO)3Cl(PyacH)2, 2.2 was designed was Re(CO)3ClCu(pyac)2] …

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Characterization Of Polyethylene Glycol Hydrogels For Biomedical Applications, Anushree Datta Jan 2007

Characterization Of Polyethylene Glycol Hydrogels For Biomedical Applications, Anushree Datta

LSU Master's Theses

Polyethylene glycol is one of the most widely used synthetic materials for biomedical applications. Its biocompatibility, flexibility, and 'stealth' properties make it ideal for use in drug delivery applications. The main objective of this paper is to characterize the structural and mass transfer properties of polyethylene glycol hydrogels for applications in drug delivery and biological immobilization. Swelling behavior of the gels was studied to determine the mesh size, and other significant structural parameters of the gel. For accurate design of drug delivery device, along with network design, mathematical modeling of release profiles was performed. The study of PEG hydrogels was …

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Biogeomorphic Evaluation Of Caminada-Moreau Maritime Beach Ridges With Respect To Future Restoration Initiatives, Hannon Didier Jan 2007

Biogeomorphic Evaluation Of Caminada-Moreau Maritime Beach Ridges With Respect To Future Restoration Initiatives, Hannon Didier

LSU Master's Theses

Restoration efforts within the coastal zone of southern Louisiana have assumed greater importance in the wake of recent storms and ever increasing sea level rise. A poorly studied geomorphic structure known as the Caminada-Moreau maritime beach ridge complex exists along the southeastern Louisiana coastline between Grand Isle and the Port of Fourchon. Active subsidence in the area has reduced the overall elevation of these structures, decreasing the live cover of its most noticeable feature, stands of Quercus virginiana (live oak), along the ridge spines. Elevation data was gathered along and across four randomly selected ridges in the study area with …

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Characterization And Analysis Of Hybrid Electronic Materials For Molecular Based Devices, Sathish Thiruvengadam Jan 2007

Characterization And Analysis Of Hybrid Electronic Materials For Molecular Based Devices, Sathish Thiruvengadam

LSU Master's Theses

The goal of this work is to characterize and to analyze hybrid electronic materials (HEMs) using fluorescence (FL) spectroscopy and conductive probe-atomic force microscopy (CP-AFM) in order to investigate the electrical and optical properties of these materials. Currently, research efforts to characterize novel organic materials for the determination of molecular level transport properties are of great interest.[6] One of the most interesting organic materials is the porphyrin molecule, which exhibits behavior useful for memory applications.[4] Colloidal CdS quantum dots (Q-CdS) capped with dioctyl sulfosuccinate (AOT) and thiol functionalized porphyrin molecules are explored for their potential application to next-generation hybrid electronic …

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