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Health And Religious Commitment Among College Students: The Effects Of Health Behavior, Mental Health, And Social Support, Monica Yvette Jones
Health And Religious Commitment Among College Students: The Effects Of Health Behavior, Mental Health, And Social Support, Monica Yvette Jones
Theses and Dissertations
Empirical findings supporting the connection between religion and spirituality and health have been consistently found in the literature, whereas the factors explaining this relationship have lacked clarity. The present study sought to explore this relationship and establish health behavior, mental health, and social support as mediating factors to the proposed association between religious commitment and physical health. Physical health was measured by a number of indicators: body mass index, self-reported medical conditions, prescription drug use, over-the-counter medication usage, and problem use of drugs and alcohol. A sample of 150 college students from a university in Central Virginia participated in this …
Characterization Of Microsatellite Loci And Pilot Population Genetic Analysis In Hickory Shad, Alosa Mediocris, Fnu Vishakha
Characterization Of Microsatellite Loci And Pilot Population Genetic Analysis In Hickory Shad, Alosa Mediocris, Fnu Vishakha
Theses and Dissertations
The hickory shad (Alosa mediocris) is a relatively understudied species of the anadromous fish sub-family Alosinae. This study, the first population genetic analysis of this species, employed 12 neutral microsatellite loci to estimate genetic diversity and population structure in tributaries of lower Chesapeake Bay, Virginia including James River and its tributaries (Appomattox and Chickahominy Rivers), Rappahannock River, and Pamunkey River. Genetic variation was extremely low. Estimates of observed heterozygosity were lower than expected heterozygosity. Significant population structure was detected among the six samples (FST = 0.093, p = 0.01). Effective population sizes were low (Ne ranged from 2 to 134). …
Membrane Properties Involved In Calcium-Stimulated Microparticle Release From The Plasma Membranes Of S49 Lymphoma Cells, Lauryl Elizabeth Campbell
Membrane Properties Involved In Calcium-Stimulated Microparticle Release From The Plasma Membranes Of S49 Lymphoma Cells, Lauryl Elizabeth Campbell
Theses and Dissertations
The mechanism of microparticle shedding from the plasma membrane of calcium-loaded cells has been investigated in erythrocytes and platelets. Recent studies have revealed the physiological and clinical importance of microparticle release from nucleated cells such as lymphocytes and endothelium. The experiments of this study were designed to address whether simple mechanisms discovered in platelets and erythrocytes also apply to the more complex nucleated cells. Four such mechanisms were addressed: potassium efflux, transbilayer phosphatidylserine migration, cytoskeleton degradation, and membrane lipid order. The rate and amount of microparticle release in the presence of a calcium ionophore, ionomycin, was assayed by light scatter …
Automatic Generation Of Music For Inducing Emotive And Physiological Responses, Kristine Perry Monteith
Automatic Generation Of Music For Inducing Emotive And Physiological Responses, Kristine Perry Monteith
Theses and Dissertations
Music and emotion are two realms traditionally considered to be unique to human intelligence. This dissertation focuses on furthering artificial intelligence research, specifically in the area of computational creativity, by investigating methods of composing music that elicits desired emotional and physiological responses. It includes the following: an algorithm for generating original musical selections that effectively elicit targeted emotional and physiological responses; a description of some of the musical features that contribute to the conveyance of a given emotion or the elicitation of a given physiological response; and an account of how this algorithm can be used effectively in two different …
Passive Treatment For Removal Of Metal And Organic Contaminants From Runoff And Effluent At Confined Disposal Facilities, Damarys Acevedo-Acevedo
Passive Treatment For Removal Of Metal And Organic Contaminants From Runoff And Effluent At Confined Disposal Facilities, Damarys Acevedo-Acevedo
Theses and Dissertations
A passive treatment alternative for the removal of metal and organic contaminants from runoff and effluent in CDFs was evaluated in this study. Activated carbon impregnated curtains have been used for different remediation projects; however, very little research has been conducted to understand its sorption behavior, breakthrough time, and exhaustion time of contaminants under high flow rates characteristic of CDF runoff and effluent. The major objectives of this study were to evaluate the efficiency of the curtain in removing contaminants from a synthetic effluent in a flow through regime and estimate the expected life of the curtains. Equilibrium tests, batch …
Aberrant Placental Immune Parameters In The Feline Immunodeficiency Virus (Fiv)-Infected Cat Suggest Virus-Induced Changes In Leukocyte Function, Lyndon Bart Chumbley
Aberrant Placental Immune Parameters In The Feline Immunodeficiency Virus (Fiv)-Infected Cat Suggest Virus-Induced Changes In Leukocyte Function, Lyndon Bart Chumbley
Theses and Dissertations
Regulatory T cells (Tregs), interleukin 17-producing T helper cells (Th17 cells), and other immune cells play important roles in the maintenance of pregnancy, and their function is impacted by HIV infection. I hypothesized that FIV-infection may likewise alter placental T cell gene expression causing aberrant immune function and compromised pregnancy. The purpose of this project was to evaluate the expression placental immunomodulators related to Treg and Th17 cell function in the FIV-infected cat model. Gene expression was quantified in placenta and serum using quantitative PCR and ELISA, respectively. Abnormal expression of cytokines was frequently associated with infection and fetal nonviability, …
Assessing The Potential For Increased Capacity Of Combined Heat And Power Facilities Based On Available Corn Stover And Forest Logging Residue In Mississippi, Selvarani Radhakrishnan
Assessing The Potential For Increased Capacity Of Combined Heat And Power Facilities Based On Available Corn Stover And Forest Logging Residue In Mississippi, Selvarani Radhakrishnan
Theses and Dissertations
The amount of available biomass feedstock and associated cost components were analyzed to determine the potential increase in energy capacity of two existing combined heat and power plants in Mississippi. The amount of corn stover and forest logging residue within a 10-mile radius can satisfy the existing requirements of CHP plants in Scott (1 MW) and Washington counties (5 MW). Transporting feedstock within a smaller source area had lower transportation costs, but higher total unit cost than the two other source buffer scenarios. However, capital costs associated with higher plant capacities were significantly higher and plant expansion may not be …
Mechanical Properties Of Porcine Muscle In Compression And Tension With Microstructural Analysis, Renee Brook Pietsch
Mechanical Properties Of Porcine Muscle In Compression And Tension With Microstructural Analysis, Renee Brook Pietsch
Theses and Dissertations
A need exists for a more robust method of evaluating musculoskeletal injuries resulting from impact conditions, particularly blasts. Computational modeling is a promising method of achieving this goal. The accuracy of a model depends on high quality mechanical properties for each component. This study examined the mechanical properties of porcine muscle along with structure property relationships. Fresh muscle was tested in compression and tension at strain rates of 0.1 s-1, 0.01 s-1, and 0.001 s-1. Viscoelastic properties were observed including strain rate dependency, stress state dependency, anisotropy, relaxation, and hysteresis. Image analysis was conducted in compression on controls, 30% strain, …
Volume Of Fluid Simulations For Droplet Impact On Dry And Wetted Hydrophobic And Superhydrophobic Surfaces, Emily Nicole Burtnett
Volume Of Fluid Simulations For Droplet Impact On Dry And Wetted Hydrophobic And Superhydrophobic Surfaces, Emily Nicole Burtnett
Theses and Dissertations
An aircraft may experience inlight ice accretion and corresponding reductions in performance and control when the vehicle encounters clouds of super-cooled water droplets. The EADS-IW Surface Engineering Group is investigating passive anti-icing possibilities, such as functional and ice phobic coatings. Ice-resistant coatings require investigating droplet impact on dry surfaces and wet films, including microscopic effects such as droplet splashing. To investigate droplet impacts, a volume of fluid (VOF) flow solver was used for droplets impacting dry and wetted hydrophobic and superhydrophobic surfaces, focusing on meso-scale simulations. The effects of structured, micro-scale surface roughness and the effects of a thin wet …
Learning Optimal Bayesian Networks With Heuristic Search, Brandon M. Malone
Learning Optimal Bayesian Networks With Heuristic Search, Brandon M. Malone
Theses and Dissertations
Bayesian networks are a widely used graphical model which formalize reasoning under uncertainty. Unfortunately, construction of a Bayesian network by an expert is timeconsuming, and, in some cases, all expertsmay not agree on the best structure for a problem domain. Additionally, for some complex systems such as those present in molecular biology, experts with an understanding of the entire domain and how individual components interact may not exist. In these cases, we must learn the network structure from available data. This dissertation focuses on score-based structure learning. In this context, a scoring function is used to measure the goodness of …
Micromechanical Analysis Of Cells From Hyperelastosis Cutis (Hc) Affected And Carrier Horses, Kenyatta Shanika Williams Washington
Micromechanical Analysis Of Cells From Hyperelastosis Cutis (Hc) Affected And Carrier Horses, Kenyatta Shanika Williams Washington
Theses and Dissertations
Equine hyperelastosis cutis (HC or HERDA), a connective tissue disorder in American Quarter Horses, results in hyperelastic skin with poor wound healing. Similar conditions are found in many species and all forms display decreased skin tensile strength. Fibroblasts produce collagen and elastin fibers, forming networks, providing the dermis with strength, and elasticity. This study aims to carry out a 3-part evaluation between horse skin fibroblast (cells from horses affected with HERDA, cells from horses that are carriers of HERDA (recessive HERDA gene), and cells from horses that are normal (neither affected or carriers of HERDA); Studies include: 1. Cell proliferation …
Analysis Of Oxygen Transfer At An Activated Sludge Plant: A Procedure For Monitoring Aeration Efficiency, Benjamin Clyde Luke
Analysis Of Oxygen Transfer At An Activated Sludge Plant: A Procedure For Monitoring Aeration Efficiency, Benjamin Clyde Luke
Theses and Dissertations
In this investigation, two separate methods for determining oxygen transfer rates were applied to the oxidation ditches of an activated sludge plant. Steady state oxygen uptake rate testing and an oxygen mass balance technique were used to propose an in-process procedure for monitoring aeration efficiency using available resources. Although some overall averages offered promise, the testing results revealed that the mass balance analysis yielded results that do not accurately represent the oxygen transfer capabilities within the individual reactors due to shared variables that control the oxygen transfer rate. The steady state method provided more favorable results. Overall averages of daily …
Analysis Of Aerial Multispectral Imagery To Assess Water Quality Parameters Of Mississippi Water Bodies, Shane Adison Irvin
Analysis Of Aerial Multispectral Imagery To Assess Water Quality Parameters Of Mississippi Water Bodies, Shane Adison Irvin
Theses and Dissertations
The goal of this study was to demonstrate the application of aerial imagery as a tool in detecting water quality indicators in a three mile segment of Tibbee Creek in, Clay County, Mississippi. Water samples from 10 transects were collected per sampling date over two periods in 2010 and 2011. Temperature and dissolved oxygen (DO) were measured at each point, and water samples were tested for turbidity and total suspended solids (TSS). Relative reflectance was extracted from high resolution (0.5 meter) multispectral aerial images. A regression model was developed for turbidity and TSS as a function of values for specific …
Chronobiology Of Lygus Lineolaris (Heteroptera: Miridae): Implications For Rearing And Pest Management, Sarah Rose Self
Chronobiology Of Lygus Lineolaris (Heteroptera: Miridae): Implications For Rearing And Pest Management, Sarah Rose Self
Theses and Dissertations
This research project consisted of three primary objectives: (1) Improve rearing methods for L. lineolaris, (2) Determine if selected behaviors displaying photoperiodicity are under circadian control, and (3) Estimate phase angle shifts of selected circadian rhythms, in an effort to contribute toward the future improvement of current integrated pest management techniques. Improving rearing methods was accomplished in three areas: (1) Estimating the optimal stocking rate to maximize production while maintaining acceptable insect quality as a function of photoperiodic regime, (2) Estimating fecundity at the optimal stocking rate and photoperiodic regime, and (3) Determining the timing of oviposition, mating, feeding and …
Effects Of Glycine-Arginine-Alpha-Ketoisocaproic Acid Calcium (Gakic) On Maximal Strength And Multiple Bouts Of Resistance Exercise, Laura Anne Hilton
Effects Of Glycine-Arginine-Alpha-Ketoisocaproic Acid Calcium (Gakic) On Maximal Strength And Multiple Bouts Of Resistance Exercise, Laura Anne Hilton
Theses and Dissertations
Glycine-arginine-alpha-ketoisocaproic acid calcium (GAKIC) is an amino acid combination postulated to improve dynamic performance of skeletal muscle during acute, anaerobic exercise in healthy individuals. Purpose: The purpose of this study was to determine the ergogenic effects of GAKIC ingestion on resistance training performance in both trained male and female participants. Methods: Utilizing a double-blinded, crossover design, male participants completed a lower body leg press resistance exercise protocol and female participants completed a lower body leg extension resistance exercise protocol once using 10.2 g GAKIC and the other with a placebo. Results: A significant increase in TLV after GAKIC supplementation was …
Effects Of Sodium Methyldithiocarbamate-Induced Oxidative Stress On Nf-Kappa B Activation, Monica Cherie Gadson
Effects Of Sodium Methyldithiocarbamate-Induced Oxidative Stress On Nf-Kappa B Activation, Monica Cherie Gadson
Theses and Dissertations
Sodium methyldithiocarbamate (SMD) is commonly reported to cause health risks in humans. Previous reports indicate SMD causes oxidative stress, which can contribute to the activation of NF-êB and cause other characteristics of inflammatory responses to be altered. Almost all pro-inflammatory cytokines require NF-êB activation for full expression and development of an innate immune or inflammatory response. This study evaluated NF-êB activation, providing new information regarding reactive oxygen in macrophages from SMD-treated mice. Studies were conducted in which NF-êB reporter mice were treated with lipopolysaccharide (LPS), SMD, buthionine sulfoximine (BSO), and N-acetyl cysteine (NAC). BSO depletes glutathione (GSH) and increases oxidative …
Ecology And Disease Potential Of The Black-Legged Deer Tick, Ixodes Scapularis Say, In Mississippi, Lauren Goltz
Ecology And Disease Potential Of The Black-Legged Deer Tick, Ixodes Scapularis Say, In Mississippi, Lauren Goltz
Theses and Dissertations
To assess the seasonality and disease potential of Ixodes scapularis Say in north Mississippi, ixodid ticks were collected by drag cloth method at two sites in north Mississippi weekly from August 1, 2010 through July 31, 2011 and tested for molecular evidence of disease agents via polymerase chain reaction (PCR) assay. In addition, environmental data were observed and recorded for each collection date. I. scapularis nymphs (n=6) were collected in August, September, March, and May, perhaps reflecting a seasonally bimodal distribution, while adults (n=256) were found October through May with a peak in March. No statistically significant relationship between environmental …
Economic Evaluation Of Biofuel Production Through Bio-Gasification Power Facility Using Modeling Method, Yangyang Deng
Economic Evaluation Of Biofuel Production Through Bio-Gasification Power Facility Using Modeling Method, Yangyang Deng
Theses and Dissertations
Since bio-gasification is a potentially more efficient way to utilize bio-energy, the economic feasibility becomes one of the greatest issues when we apply this new technology. Evaluation of economic feasibility of a bio-gasification facility needs understanding of its production unit cost under different capacities and different working shift modes. The objectives of this study were to evaluate the unit cost of bio-syngas and biouel products at different capacities by using economic modeling method. Result showed that economic feasibility of a power facility was significantly affected by its production capacity and operating mode (one shift, two shifts, or three shifts mode). …
Crappie Population Characteristics Relative To Inundation Of Floodplain Habitats In Reservoirs, Jonah Dennis Dagel
Crappie Population Characteristics Relative To Inundation Of Floodplain Habitats In Reservoirs, Jonah Dennis Dagel
Theses and Dissertations
Catch rates of age-0 and adult crappies Pomoxis spp. were compared between floodplains and coves to determine if differences in densities existed between habitats, and to determine if water levels influenced density relationships. Habitat in a cove and a floodplain of Enid Reservoir was mapped to describe differences in vegetation. Adult crappies were collected with electrofishing and age-0 crappies were collected with trap nets. Coves had the greatest spring densities of adults in 2009 and 2010, whereas floodplains attracted adults earlier in the spawning season. Recruitment of age-0 crappies was related inversely to high water levels during months preceding the …
Degree Of Pyritization And Methylmercury Analysis, Weeks Bay Alabama, Henry A. Stauffenberg
Degree Of Pyritization And Methylmercury Analysis, Weeks Bay Alabama, Henry A. Stauffenberg
Theses and Dissertations
Methylmercury (MeHg) production is magnified in the natural environment by geochemical influxes and an active sulfate reducing bacteria community. It has been found that the presence of sulfides, excess nutrients, and the type of depositional environment (normal marine or euxinic) greatly influences MeHg production and degree of pyritization (DOP). The aim of this research is to investigate a possible connection between MeHg accumulation and the DOP in Weeks Bay sediment. Collected sediment samples have confirmed a significant presence of total reduced sulfides, inorganic mercury, reactive iron, and total organic carbon. Pyritization results indicate a normal marine environment and, of the …
Analysis Of Classes Of Singular Boundary Value Problems, Eunkyung Ko
Analysis Of Classes Of Singular Boundary Value Problems, Eunkyung Ko
Theses and Dissertations
In this dissertation we study positive solutions to a singular p-Laplacian elliptic boundary value problem on a bounded domain with smooth boundary when a positive parameter varies. Our main focus is the analysis of a challenging class of singular p-Laplacian problems. We establish the existence of a positive solution for all positive values of the parameter and the existence of at least two positive solutions for a certain explicit range of the parameter. In the Laplacian case, we also prove the uniqueness of the positive solution for large values of the parameter. We extend our existence and multiplicity results to …
Analysis Of Relaxin And Acute-Phase Proteins In Urine And Feces For Canine Pregnancy Diagnosis, Vanna Gail Mcmillan
Analysis Of Relaxin And Acute-Phase Proteins In Urine And Feces For Canine Pregnancy Diagnosis, Vanna Gail Mcmillan
Theses and Dissertations
Measurements of relaxin and acute-phase proteins have not been validated for use in canine serum as a method of pregnancy diagnosis. This means that handling and anesthesia is still necessary to check the pregnancy status of most non-domestic canines. Therefore, the intention of this study was to determine whether relaxin and/or acute-phase proteins could be detected in the urine and/or feces of the domestic dog in order to evaluate the potential for a noninvasive pregnancy test in canines. Blood, urine and feces were collected from 18 domestic dogs and assayed for the presence of relaxin, fibrinogen, alpha-1 acid glycoprotein, and …
Evaluation Of Field-Scale Soil Organic Carbon And Watershed-Scale Bioenergy Crop Production In Mississippi, Sarah Duffy
Evaluation Of Field-Scale Soil Organic Carbon And Watershed-Scale Bioenergy Crop Production In Mississippi, Sarah Duffy
Theses and Dissertations
To date only a limited number of studies have been done at the field level to observe the effects of agricultural management practices on carbon sequestration, water quality, and bioenergy crop yield in Mississippi. Therefore, the goals of this study were to monitor soil organic carbon (SOC) levels at the field scale and perform a comprehensive analysis of the potential environmental impacts at the watershed scale using the Soil and Water Assessment Tool (SWAT) in two watersheds located in Mississippi. It was found that SOC levels generally are affected by depth, land use, and time. The SWAT models showed good …
Evaluation Of The Hydrologic Impact, Potential Forest Biomass Production, And Sensitivity Analysis Of The Upper Pearl River Watershed Using Swat Model, Sunita Khanal
Theses and Dissertations
The Soil and Water Assessment Tool (SWAT) was used to quantify the potential impacts of clearcutting on hydrologic and water quality components, and assess potential forest biomass production and perform sensitivity analysis of crop parameters to predict forest biomass in the Upper Pearl River Watershed. Results based on clearcutting indicated that the hydrologic and water quality components increases with increase in percentage of forest area harvested. The most significant effect was observed from 55% and 75% harvesting scenarios. The results based on SWAT’s performance to simulate potential forest biomass production showed satisfactory performance and revealed that the watershed has the …
Experimental And Computational Study Of The Ph Dependence Of Dithiopurine (Dtp) Interaction With Gold Nanoparticles (Aunps), Hao Xia
Theses and Dissertations
Understanding molecular level ligand interfacial interaction with gold nanoparticles (AuNPs) is important for AuNP applications such as catalysts, drug delivery vehicles, and so forth. As an organothiol that can undergo multiple tautomerization, protonation and deprotonation reactions, 2,6-dithiopurine (DTP) can have many different structures in solution and on AuNP surfaces. The goal of this research is to determine the structure of DTP on AuNPs at different pHs using a combination of experimental investigation and computational modeling. The experimental DTP UV-vis spectra and the DTP adsorption on AuNPs are pH strongly dependent, indicating the structural complexity of DTP in solution. The DTP …
Exploiting Spatial And Spectral Information In Hyperdimensional Imagery, Matthew Allen Lee
Exploiting Spatial And Spectral Information In Hyperdimensional Imagery, Matthew Allen Lee
Theses and Dissertations
In this dissertation, new digital image processing methods for hyperdimensional imagery are developed and experimentally tested on remotely sensed Earth observations and medical imagery. The high dimensionality of the imagery is either inherent due to the type of measurements forming the image, as with imagery obtained with hyperspectral sensors, or the result of preprocessing and feature extraction, as with synthetic aperture radar imagery and digital mammography. In the first study, two omni-directional adaptations of gray level co-occurrence matrix analysis are developed and experimentally evaluated. The adaptations are based on a previously developed rubber band straightening transform that has been used …
Insights Into The Taxonomy And Evolution Within An Orchid, Platanthera Dilatata, Based On Orphometrics And Molecular Markers, Binaya Adhikari
Insights Into The Taxonomy And Evolution Within An Orchid, Platanthera Dilatata, Based On Orphometrics And Molecular Markers, Binaya Adhikari
Theses and Dissertations
Documenting biodiversity, at and below the species level, is a persistently challenging task for biologists. Poor understanding of biodiversity may lead to incorrect interpretations of observed variation. The underlying basis of variation can be understood by quantifying multiple sources of information. Nine morphometric characters and plastid DNA sequences (2511 bps) were quantified in a highly variable orchid species, Platanthera dilatata, to evaluate taxonomy of the three named varieties and to understand patterns of evolution. Three morphological groups, identified in a cluster analysis, were distinct in multiple floral traits. Additionally, the three clusters were consistently genetically divergent as indicated by infrequent …
Cellulosic Fiber-Derived Carbon Catalyzed By Iron Oxide Nanoparticles, Wen Che
Cellulosic Fiber-Derived Carbon Catalyzed By Iron Oxide Nanoparticles, Wen Che
Theses and Dissertations
The objective of this research was to study the catalytic graphitization of cellulose fibers coated with iron oxide nanoparticles. Bleached cellulose fibers and iron oxide nanoparticles coated cellulose fibers were pyrolyzed at five elevated temperatures. The crystallographic structures of carbon-encapsulated iron oxide nanoparticles were then investigated by the following techniques: Scanning Electron Microscopy (SEM), X-ray Diffraction (XRD), Raman Spectroscopy, Transmission Electron Microscopy (TEM), and Selected-Area Electron Diffraction (SAED). The graphitization of cellulosic fibers was enhanced by the presence of iron oxide nanoparticles. Moreover, iron oxide nanoparticles deposited on cellulosic fiber samples pyrolyzed above 800°C produced graphitic structures. TEM and XRD …
Assessment Of The Lactation Index For Managing White-Tailed Deer Populations, Kamen Lee Campbell
Assessment Of The Lactation Index For Managing White-Tailed Deer Populations, Kamen Lee Campbell
Theses and Dissertations
I analyzed precision and accuracy of lactation data to reflect actual fawn recruitment for various levels of fecundity, neonatal mortality, harvest intensity, and hunter selectivity. I evaluated and developed a correction equation to adjust for harvest date effects on lactation detectability. I compared metrics of site-specific fawn recruitment (e.g., lactation rates, hunter observation fawn-to-doe ratios, and post-season fawn-to-doe ratios) among themselves, and to site-specific indices of carnivore abundance, for 18 properties across Mississippi and Alabama. Accuracy of lactation rates are compromised due to variation at minimal harvest intensity and insensitivity to change in fetal rate or neonatal mortality. Lactation data …
Fused-Ring Heterocycle Syntheses From Thiazole, Oxazole, Benzoxazole, And Benzothiazole Derivatives And Trifluoroacetylations Of N-Methyl Cyclic Ketene-N,O/S-Acetals: Attempted Syntheses Of Functionalized Polymers From Plant-Derived 5-(Hydroxymethyl)Furfural, Hondamuni Ireshika Chathurani De Silva
Fused-Ring Heterocycle Syntheses From Thiazole, Oxazole, Benzoxazole, And Benzothiazole Derivatives And Trifluoroacetylations Of N-Methyl Cyclic Ketene-N,O/S-Acetals: Attempted Syntheses Of Functionalized Polymers From Plant-Derived 5-(Hydroxymethyl)Furfural, Hondamuni Ireshika Chathurani De Silva
Theses and Dissertations
There are two sections to this research dissertation. Part one includes syntheses of fused-ring heterocycles derived from thiazole, oxazole, benzoxazole and benzothiazole derivatives and trifluoroacetylations of in situ generated N-methyl cyclic ketene-N,O/Sacetals. Attempted functionalized polymer syntheses from plant-derived 5-(hydroxymethyl) furfural are discussed in part two. Three 2-methylthiazoles, 2,4,5-trimethyloxazole, 2-methylbenzoxazole and 2- methyl-benzothiazole were each reacted with benzoyl chloride in acetonitrile/triethylamine to generate benzyl-vinyl esters. Base hydrolysis of these benzyl-vinyl esters formed 2-(heterocyclic)-1-phenylethenols which exist in both ketoenol tautomeric forms. These tautomers were used as starting materials for fused-ring heterocycle syntheses. Each tautomeric pair react with dimethyl acetylenedicarboxylate in methanol giving …