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The Feasibility Of Using Vanadium And Nickel To Track Oil Spills In Coastal Environments, Sean Patrick Kenny Jan 2013

The Feasibility Of Using Vanadium And Nickel To Track Oil Spills In Coastal Environments, Sean Patrick Kenny

LSU Master's Theses

Crude oil has been increasing in world demand over the past century. It is known that oil is resistant to weathering processes and if spilled, can cause serious environmental damage to an area, on land or sea. A complementary approach to current methods of tracking oil and identifying spill-impacted sediments may be to measure trace metals associated with crude oil. Trace metals, such a vanadium (V) and nickel (Ni) are known to be elevated in concentration in some oil sources, but little work has been done on this topic. This research explored less expensive and time-consuming methods to track or …

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Computed Tomographic Assessment Of Canine Arytenoid Lateralization, James Richard Wignall Jan 2013

Computed Tomographic Assessment Of Canine Arytenoid Lateralization, James Richard Wignall

LSU Master's Theses

Unilateral arytenoid lateralization is a commonly performed surgical treatment for laryngeal paralysis in dogs. It involves fixing the moveable arytenoid cartilage to the thyroid (TAL) or cricoid (CAL) cartilage or both (CTAL). This increases the area of the rima glottidis (RGA), to allow reduced airway pressure and laryngeal resistance in vitro and ameliorates clinical signs in vivo. It may also increase the patient’s predisposition for aspiration pneumonia, which occurs in around 20% of clinical patients. No surgical technique has been correlated with clinical outcome or risk of aspiration pneumonia. Objective analysis of the effects of surgery on the three dimensional …

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Determination Of Cane Berry Pomaces Benefits Through In Vitro Model For Human Colonic Fermentation, M'Famara Goita Jan 2013

Determination Of Cane Berry Pomaces Benefits Through In Vitro Model For Human Colonic Fermentation, M'Famara Goita

LSU Master's Theses

Cane berry pomaces have traditionally been considered waste products with little or no value. Yet these pomaces’ high levels of phenolic compounds such as anthocyanins, is a good source of dietary fiber. Because the pomaces are low in sugar and rich in fiber and dietary antioxidants, they have potential as food ingredients for the health food market. The pomace delivers health benefits associated with high fiber and the antioxidant polyphenolic compounds associated with whole fruits and juices without the high sugar content. Some dietary fibers are substrates for anaerobic fermentation by the microbiome in the lower gastrointestinal (GI) tract. The …

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Insulin Secretagogue Activity Of Ellagic Acid-Rich Muscadine (Vitis Rotundifolia) And Indian Gooseberry (Emblica Officinalis) Extracts On Pancreatic Beta Cells, Srikanth Earpina Jan 2013

Insulin Secretagogue Activity Of Ellagic Acid-Rich Muscadine (Vitis Rotundifolia) And Indian Gooseberry (Emblica Officinalis) Extracts On Pancreatic Beta Cells, Srikanth Earpina

LSU Master's Theses

Diabetes is an inflammatory disease associated with hyperglycemia. Chronic exposure of pancreatic â-cells to glucolipotoxicity stimulates a low-grade inflammation associated with the release of pro-inflammatory cytokines such as interleukin-1â (IL-1â). Increased levels of IL-1â can initially lead to decreased insulin secretion and finally â-cell death. Ellagic acid and quercetin have been reported to be anti-inflammatory in several studies. Vitis rotundifolia (muscadine) or Emblica officinalis (amla) are good sources of ellagic acid and quercetin. Ellagic acid or quercetin is bioavailable as is or are metabolized into bioavailable urolithins or isorhamnetin, respectively. The objective of this study was to evaluate the effect …

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Potential Roles Of Wrky Transcription Factors In Resistance To Aspergillus Flavus Colonization Of Immature Maize Kernels, Jake Clayton Fountain Jan 2013

Potential Roles Of Wrky Transcription Factors In Resistance To Aspergillus Flavus Colonization Of Immature Maize Kernels, Jake Clayton Fountain

LSU Master's Theses

The infection and colonization of maize (Zea mays L.) by the necrotrophic fungal pathogen Aspergillus flavus results in contamination of kernel tissues with carcinogenic mycotoxins known as aflatoxins, resulting in severe economic losses as well as negative effects on human and animal health. Resistance to A. flavus is mediated by both inducible and constitutively expressed defense proteins; however the mechanism regulating the expression of these defenses is poorly understood. This study examined the potential roles of six maize WRKY transcription factors, ZmWRKY19, ZmWRKY21, ZmWRKY53, ZmWRKY53.1, ZmWRKY67, and ZmWRKY68, in regulating defense responses against …

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Changes In Plasma Melanocyte Stimulating Hormone, Acth, Prolactin, Gh, Lh, Fsh, And Thyroid Stimulating Hormone In Response To Injection Of Sulpiride, Thyrotropin Releasing Hormone, Or Vehicle In Insulin Sensitive And Insensitive Mares, Nicole Arana Valencia Jan 2013

Changes In Plasma Melanocyte Stimulating Hormone, Acth, Prolactin, Gh, Lh, Fsh, And Thyroid Stimulating Hormone In Response To Injection Of Sulpiride, Thyrotropin Releasing Hormone, Or Vehicle In Insulin Sensitive And Insensitive Mares, Nicole Arana Valencia

LSU Master's Theses

Six insulin sensitive and six insensitive mares were used in a replicated 3 x 3 Latin square design to determine the pituitary hormonal responses (compared to vehicle) to sulpiride and thyrotropin-releasing hormone (TRH), two compounds commonly used to diagnose pituitary pars intermedia dysfunction (PPID) in horses. Mares were classified as insulin sensitive or insensitive by their previous glucose responses to direct injection of human recombinant insulin. Treatment days were February 25 and March 10 and 24, 2012. Treatments were sulpiride (racemic mixture, 0.01 mg/kg BW), TRH (0.002 mg/kg BW), and vehicle (saline, 0.01 mL/kg BW) administered intravenously. Blood samples were …

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Factors Affecting Basal And Post-Exercise Prolactin Secretion In Horses, Lisa C. Digiovanni Jan 2013

Factors Affecting Basal And Post-Exercise Prolactin Secretion In Horses, Lisa C. Digiovanni

LSU Master's Theses

There has been thorough documentation to support the role of dopamine in the control of prolactin production and secretion in various mammalian species, including the horse. However, there is evidence that other factors are involved in prolactin secretion. Seven experiments were conducted to assess factors that potentially might affect prolactin secretion in the horse. The first two experiments were conducted (separately) to test whether arginine vasopressin (AVP) or vasoactive intestinal polypeptide (VIP) affected prolactin secretion. In each experiment, AVP or VIP was administered intravenously and blood samples were collected to determine the effect on prolactin secretion. Neither peptide produced any …

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Effects Of Caste On The Constitutive And Induced Expression Of Genes Associated With Immunity And Detoxification In Formosan Subterranean Termites, Dawn M. Simms Jan 2013

Effects Of Caste On The Constitutive And Induced Expression Of Genes Associated With Immunity And Detoxification In Formosan Subterranean Termites, Dawn M. Simms

LSU Master's Theses

Simms, Dawn M., B.S., Louisiana State University, 1997 Master of Science, Spring Commencement, 2013 Major: Entomology Effects of Caste on the Constitutive and Induced Expression of Genes Associated with Immunity and Detoxification in Formosan Subterranean Termites Thesis directed by Associate Professor Claudia Husseneder Pages in thesis, 74. Words in abstract, 268. ABSTRACT Formosan subterranean termites (FSTs) live in dense populations and nest conditions that are conducive to microbial growth. Furthermore, termites are exposed to potential toxic substances in the soil and in their lignocellulose diet. These characteristics, in combination with the specialized caste system of FSTs, make this termite a …

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The Effects Of Self-Examination To Peers On Student Learning In Physical Science, Leah Ellis Thompson Jan 2013

The Effects Of Self-Examination To Peers On Student Learning In Physical Science, Leah Ellis Thompson

LSU Master's Theses

This study was undertaken to test if the use of self-explanation to a peer would affect learning outcomes in the classroom. The outcomes of classes taught using the self-explanation technique were compared to outcomes from traditional lecture courses in lessons of comparable content. Great Scholars and traditional students in a sixth grade physical science classroom setting were given pre-and post-tests in two units of study, matter and waves. In the matter unit, students participated in a lesson on density using traditional lecture and a lesson on changes in matter using self-explanation. In the waves unit, students utilized lecture instruction for …

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Influence Of "Added" Lactose On Probiotic Properties Of Yogurt Culture Bacteria And Yogurt Characteristics, Behannis Jasmin Mena-Chalas Jan 2013

Influence Of "Added" Lactose On Probiotic Properties Of Yogurt Culture Bacteria And Yogurt Characteristics, Behannis Jasmin Mena-Chalas

LSU Master's Theses

Lactose sugar is a source of energy for Lactic Acid Bacteria (LAB) in dairy fermented products. Enrichment of yogurt with lactose addition may increase growth and viability of the yogurt starter culture (Streptococcus thermophilus and Lactobacillus delbrueckii ssp. bulgaricus) and enhance yogurt physico-chemical and sensory attributes. The objectives of this study were: to determine the influence of added lactose on (1) acid and bile tolerance of yogurt starter culture Streptococcus thermophilus ST-M5 and Lactobacillus bulgaricus LB-12, (2) the final lactose content of yogurt during its shelf life, (3) the physico-chemical characteristics of yogurt during shelf life, (4) the growth of …

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Pla/Plga Nanoparticles For Delivery Of Drugs Across The Blood-Brain Barrier, Jingyan Li, Cristina Sabliov Jan 2013

Pla/Plga Nanoparticles For Delivery Of Drugs Across The Blood-Brain Barrier, Jingyan Li, Cristina Sabliov

Faculty Publications

The blood-brain barrier (BBB), which protects the central nervous system (CNS) from unnecessary substances, is a challenging obstacle in the treatment of CNS disease. Many therapeutic agents such as hydrophilic and macromolecular drugs cannot overcome the BBB. One promising solution is the employment of polymeric nanoparticles (NPs) such as poly (lactic-co-glycolic acid) (PLGA) NPs as drug carrier. Over the past few years, significant breakthroughs have been made in developing suitable PLGA and poly (lactic acid) (PLA) NPs for drug delivery across the BBB. Recent advances on PLGA/PLA NPs enhanced neural delivery of drugs are reviewed in this paper. Both in …

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Variability And Characteristics Of Recycled Asphalt Shingles Sampled From Different Sources, Aaron Lodge Jan 2013

Variability And Characteristics Of Recycled Asphalt Shingles Sampled From Different Sources, Aaron Lodge

LSU Master's Theses

Recent literature studies have demonstrated depletion in natural resources; therefore, making resources needed for the pavement industry is more costly. There is a need to minimize cost and to try to reduce the depletion of natural resources. While the recycling of asphalt shingles is beneficial in reducing the consumption of virgin materials, pavement performance should not be compromised. One major concern with recycled asphalt shingles (RAS) relates to the variability in the properties of the recycled materials originating from different sources. In addition, the rheological properties of RAS have not been evaluated as well as its influence on the virgin …

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Renewable Energy Across The 50 United States And Related Factors, Cynthia Brit Christenson Jan 2013

Renewable Energy Across The 50 United States And Related Factors, Cynthia Brit Christenson

LSU Master's Theses

Renewable energy production replaces diminishing non-renewable energy sources including fossil fuels. Major sources of renewable energy include biofuels, geothermal, hydroelectric, solar thermal and photovoltaic, wind, wood, and biomass. Greater use of renewable energy sources can fill gaps in energy as non-renewable sources are depleted, provide more energy independence at a state and national level, and help address climate change by reducing greenhouse gas emissions from combustion of fossil fuels. The research objectives of this thesis are two-fold. First, which U.S. states are leaders in renewable energy production? Second, what factors may account for variation among U.S. states in levels of …

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Synthesis, Characterization And Biological Studies Of Carboranyl-Porphyrin Bioconjugates For Treatment Of Brain Tumors, Naga Venkata Satya Dinesh Kumar Bhupathiraju Jan 2013

Synthesis, Characterization And Biological Studies Of Carboranyl-Porphyrin Bioconjugates For Treatment Of Brain Tumors, Naga Venkata Satya Dinesh Kumar Bhupathiraju

LSU Doctoral Dissertations

Chapter 1 gives a brief introduction to brain tumors, approaches to deliver drug across the blood brain barrier (BBB), boron neutron capture therapy (BNCT) for brain tumors, application of carboranyl derivatives in attempt to treat brain tumors using BNCT. Chapter 2 involves synthesis, characterization and toxicity studies (In vitro and In vivo) of high boron containing pegylated cobaltabisdicarbollide porphyrin for treatment of brain tumors using BNCT. To improve the selectivity towards brain tumors we attempted conjugate several peptides to this non-toxic pegylated cobaltabiscabollide porphyrin. In vivo studies were conducted in collaboration with Dr. David G. Baker at LSU veterinary Medicine. …

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Optimizing Light Requirements And Dilution Rates For Maximizing Algal Cell Growth And Lipid Content For Biofuel Feedstock Production, Beatrice Gabriela Terigar Jan 2013

Optimizing Light Requirements And Dilution Rates For Maximizing Algal Cell Growth And Lipid Content For Biofuel Feedstock Production, Beatrice Gabriela Terigar

LSU Doctoral Dissertations

There is a rapidly growing interest in the potential of microalgae as feedstock for the next generation of biofuels. The current study was designed to meet the following objectives: (1) Investigate the interdependence among cell density, biomass and lipid productivity to maximize feedstock production from outdoor cultures; (2) Investigate the effect of cycling high-intensity lights to identify optimum Dark:Light (D/L) ratios, which can be effectively used by researchers to maximize aerial biomass productivities; (3) Develop a deterministic model to simulate the biomass productivity in an continuous-flow bioreactor at various hydraulic retention times. Results indicated that variation in HRTs has a …

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Res Voluntaria, Non Necessaria: The Conquest And Forced Conversion Of The Saxons Under Charlemagne, Alexander Scott Dessens Jan 2013

Res Voluntaria, Non Necessaria: The Conquest And Forced Conversion Of The Saxons Under Charlemagne, Alexander Scott Dessens

LSU Master's Theses

This study focuses on Charlemagne’s conquest of Saxony in the late eighth and early ninth centuries and the policies of forced conversion he espoused in his attempts to bring the peoples of these territories to the Christian religion. Often remarked upon is the Carolingian king’s prescription of the death penalty for failure to be baptized, but this development was a logical consequence of contemporary ideology with regard to missionizing. I employ the letters of contemporaries, historical annals, and hagiographical sources to examine how the use of force in missionizing was viewed in this period, and I argue that with regard …

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The Development Of Gluten-Free Milk-Free French Bread, Annette Camnetar Bentley Jan 2013

The Development Of Gluten-Free Milk-Free French Bread, Annette Camnetar Bentley

LSU Master's Theses

Approximately 6% of children and approximately 4% of adults in the western countries including the United States (US) have food allergies. Milk allergy is reported to be one of the most common food allergies affecting as high as 7% in the US. Celiac disease affects approximately 1% of the US population. Such individuals are required to maintain diets restricting milk and gluten. Autism is estimated to affect over 673,000 in the US. A milk-free gluten-free diet is recommended for autism. The gluten grains identified are wheat, oats, barley and rye and any by-products or cross-bred grains of these products. Foods …

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New Orleans And Fazendeville (De) Segregated : Challenging A Narrative Of School Integration, April Antonellis Jan 2013

New Orleans And Fazendeville (De) Segregated : Challenging A Narrative Of School Integration, April Antonellis

LSU Master's Theses

Too often, “integration” is a word only associated with the 1960s. The dominant narrative of education and integration in the South is simple and linear: African Americans were oppressed, then there was integration, then there was equality. However, in the case of New Orleans, the narrative is not so linear and not nearly so succinct. The conversation on integration began in New Orleans immediately following the Civil War, a century earlier than this conventional starting date, and yet despite generations of successes and drawbacks, the public schools of New Orleans continue to exist segregated today. Examining the narrative of school …

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Intermix: Traditional Pre-Columbian Art Meets Contemporary Design, Luisa Fernanda Restrepo Jan 2013

Intermix: Traditional Pre-Columbian Art Meets Contemporary Design, Luisa Fernanda Restrepo

LSU Master's Theses

Cultural identity is something that impacts the individual, shaping and influencing them, during their lifetime journey. Each person chooses to embrace that identity differently. For my thesis, I investigated pre-Columbian culture and it’s rich history, specifically source visuals of faces as symbolic forms integrated into my visual study. Exploring: various media, elements that are expressive of national identity, image-making techniques, and my graphic design knowledge as vehicles in my work to uncover a different point of view of my own cultural heritage. The process of finding new graphic representations of traditional pre-Columbian faces, while deconstructing and reconstructing their structure and …

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"Feels Like Racial Battle Fatigue": Managing Divesity Crisis Moments In Higher Education, Chaunda Myretta Allen Jan 2013

"Feels Like Racial Battle Fatigue": Managing Divesity Crisis Moments In Higher Education, Chaunda Myretta Allen

LSU Doctoral Dissertations

Higher education was founded over three hundred years ago for a specific group, affluent, White men in mind. In the past five decades, however, the demographics of Higher Education Institutions have changed drastically from those early homogenous origins. The increased access of underrepresented populations attending Predominately White Institutions necessitated the need for offices that serve these groups. Offices of Multicultural Affairs or Multicultural Centers were created to address issues of diversity but they did not fully address issues of equity on college campuses. The purpose of this qualitative research study was to understand the ways in which mid-level diversity management …

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On Contests With Complementarities, Matthew Wiser Jan 2013

On Contests With Complementarities, Matthew Wiser

LSU Doctoral Dissertations

In this dissertation, we consider the role of complementarities in contests. In most contests, there is either a single prize available, or multiple prizes whose joint value is simply the sum of the values of the individual prizes. We consider contests involving competitions for multiple objectives whose value depend on the combination of objectives won. These combinations of objectives are the basis for the complementarities we examine. We use contests consisting of multiple subcontests, with the subcontests determining the winner of each objective. The overall contest thus determines which combinations of objectives each player achieves, and thus the overall prize …

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British Women And Orientalism In The Early Nineteenth Century : A Study Of Mrs. Meer Hassan Ali's "Observations On The Mussulmauns Of India", Katherine Blank Jan 2013

British Women And Orientalism In The Early Nineteenth Century : A Study Of Mrs. Meer Hassan Ali's "Observations On The Mussulmauns Of India", Katherine Blank

LSU Master's Theses

Mrs. Meer Hassan Ali’s book Observations on the Mussulmauns of India stood as a benchmark of British knowledge about Islam in South Asia throughout the nineteenth and twentieth centuries. Although Ali’s book was a seminal and highly regarded book, modern intellectual and women’s historians have largely ignored her contribution towards the mainstream perception of Islam in colonial India. Published in 1832, Observations on the Mussulmauns countered many negative stereotypes about Islam that had become common in the works of Indologists by putting forth a new perspective gleaned from Ali’s decade-long stay in India, where she lived with her husband’s family …

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Numerical Evaluation And Analysis Of The Adhesion Phenomena In Thermal Barrier Coating Systems Through Bio-Mimicking Plasma Process, Naser Imran Hossain Jan 2013

Numerical Evaluation And Analysis Of The Adhesion Phenomena In Thermal Barrier Coating Systems Through Bio-Mimicking Plasma Process, Naser Imran Hossain

LSU Master's Theses

Thermal Barrier Coatings or TBCs when abbreviated are an imperative part of the thermal protection system of expensive equipment and machinery in the automobile and aeronautics industry. They provide protection to expensive alloy materials upto a temperature of 2700° C without expensive metallurgical additions. Unfortunately, the problem of coating adhesion has plagued the TBC field for years, leading to catastrophic failures in critical TBC systems. Efforts to chemically improve bond strength has not been entirely successful, so the only other efficient way to do this would be some kind of mechanical interlocking that occurs at micro/nano scales. This research work …

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The Collaged Practice : (Un)Familiar, Raina Beth Wirta Jan 2013

The Collaged Practice : (Un)Familiar, Raina Beth Wirta

LSU Master's Theses

My thesis exhibition is an installation of works including sculpture, video, paintings, a hand made book, sound, and drawings that emanated from a series of two-dimensional collages: self-contained forms that evoke the surreal, (un)familiar, and/or grotesque. Infused with a sort of mysterious being-hood and intended to inspire curiosity (at the least), they are unfamiliar in relation to a particular biological thing, but (mostly) recognizable in the autonomous bits and pieces. I seek to question where our physicality ends and the next form of biological life begins, and our responses to that physicality. With childlike inquisitiveness and wonder, and a healthy …

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Metacognition And Its Effect On Learning High School Calculus, Bonnie Sue Bergstresser Jan 2013

Metacognition And Its Effect On Learning High School Calculus, Bonnie Sue Bergstresser

LSU Master's Theses

The following paper discusses the effect of metacognitive training sessions on students’ calculus retention. Students in two high school classes participated. The students in both classes were then given lessons on a chapter without metacognitive training and lessons on a subsequent chapter with training in a set of metacognitive skills. After the latter chapter students scored higher on a post-test and expressed desire to incorporate the skills they learned into their other classes.

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Oxidative Stress Based Response Of A Transcriptional Regulator, Ohrr, From Burkholderia Thailandensis, Anuja Pande Jan 2013

Oxidative Stress Based Response Of A Transcriptional Regulator, Ohrr, From Burkholderia Thailandensis, Anuja Pande

LSU Master's Theses

Being ubiquitous in nature, bacteria are often faced by environmental stresses. The predominant form of stress being the ‘oxidative’ one, prevalent during host invasion. As one of the host’s protective mechanisms, bacteria are bombarded by various kinds of organic and inorganic oxidants. Several bacterial antioxidant systems have been studied and characterized to be potent enough to scavenge such host-derived reactive oxygen species, aiding in bacterial survival within the host. Broadly, the antioxidant scavengers are categorized into those that are specific for inorganic or organic oxidants. Although a lot has been studied about the former, the latter still remains uncharacterized in …

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Emergent Irrigation Agriculture And Settlement Patterns In The Lower Nepeña Valley, North-Central Coast Of Peru, Caitlyn Yoshiko Mcnabb Jan 2013

Emergent Irrigation Agriculture And Settlement Patterns In The Lower Nepeña Valley, North-Central Coast Of Peru, Caitlyn Yoshiko Mcnabb

LSU Master's Theses

The Andes is one of many regions thought to have developed as a pristine hydraulic state; thus the region serves as a testing ground for theories on the development of irrigation. Since Wittfogel (1957) proposed a correlation between irrigation and the development of pristine states, the relationships between social organization, political power, and coordinated subsistence strategies have been hotly debated. This research will examine the role of irrigation in the transition to early urban settlements in the Nepeña Valley, on the north-central coast of Peru. I especially focus on the nature of political structure and social organization, examining the validity …

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The Effects Of Natural And Anthropogenic Stressors On The Stress Response And Tissue-Level Response In Teleost Fish, Benjamin David Dubansky Jan 2013

The Effects Of Natural And Anthropogenic Stressors On The Stress Response And Tissue-Level Response In Teleost Fish, Benjamin David Dubansky

LSU Doctoral Dissertations

Analysis of integrative physiological responses is a valuable approach to studying the biological impacts of natural and anthropogenic stressors in biota. By measuring fluctuations in multiple physiological characteristics, we are able to predict the impact that exogenous stressors may have on organismal health. Laboratory studies are useful in studying the effects of a single or multiple stressor interactions in a controlled environment, although field-based studies allow for the understanding of how fish are affected in situ, where multiple natural and anthropogenic stressors exist. Using laboratory and field-based experimental design, physiological indices of fish health were measured in fish exposed to …

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Model-Based Approaches To Discovering Diversity : New Implementations, Tests Of Adequacy And An Empirical Application To Central American Diptera, Noah M. Reid Jan 2013

Model-Based Approaches To Discovering Diversity : New Implementations, Tests Of Adequacy And An Empirical Application To Central American Diptera, Noah M. Reid

LSU Doctoral Dissertations

Most of the earth’s biodiversity is unknown to science. With global climate change set to drastically alter its distribution, it is imperative to catalogue it and understand its function in order to preserve it and better understand how this change will impact humanity. Recent technological and statistical advances have in theory made possible increasingly rapid discovery and description of diversity. The statistical properties and performance of these new approaches are still poorly known, however, their integration with complementary methods from disparate disciplines has not been achieved. In this dissertation we present three chapters of original research that advance these areas …

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Molecular Products From The Thermal Degradation Of Selected Tobacco Components: Lignin, Tyrosine, Glutamic Acid, And Modeling Of Lignin Pyrolysis Using Chemkin Combustion Suite, Joshua Kiprotich Kibet Jan 2013

Molecular Products From The Thermal Degradation Of Selected Tobacco Components: Lignin, Tyrosine, Glutamic Acid, And Modeling Of Lignin Pyrolysis Using Chemkin Combustion Suite, Joshua Kiprotich Kibet

LSU Doctoral Dissertations

This study explores the thermal decomposition behavior of selected tobacco components: lignin, tyrosine, and glutamic acid using the system for thermal diagnostic studies (STDS) in an in-line gas chromatography-mass spectrometer analytical technique. The pyrolysis conditions employed in this study were a flowing atmosphere of nitrogen and 4% O2 in nitrogen at a residence time of 0.2 seconds for a total pyrolysis time of 3 minutes. The results identified common relationships between the two modes of reaction atmospheres, as well as some differences. While some products were favored by an inert regime, some were favored under an oxidative regime. Oxidative pyrolysis …

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