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2015

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Junior Level Baccalaureate Nursing Students' Lived Experiences With Test Anxiety: Can Music Serve As A Means To Reduce Test Anxiety And Increase Self-Efficacy?, Keeley Clark Harmon Jan 2015

Junior Level Baccalaureate Nursing Students' Lived Experiences With Test Anxiety: Can Music Serve As A Means To Reduce Test Anxiety And Increase Self-Efficacy?, Keeley Clark Harmon

LSU Doctoral Dissertations

Test anxiety is a pervasive problem in education programs. Nursing education is not an exception as approximately 30% of nursing students are impacted by varying levels of test anxiety that can affect their ability to succeed. This mixed methods study utilizes concepts from Bandura’s Social Learning Theory, the Cognitive-Attentional (Interference) Model, and the Georgi Lozanov method to explore the lived experiences of junior level baccalaureate nursing students with test anxiety. The 39 participants in the quantitative portion of the study were randomly assigned to one of two groups. The experimental group (n=18) listened to a nine minute and 27 second …

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Design And Implementation Of A Passive Neurostimulator With Wireless Resonance-Coupled Power Delivery And Demonstration On Frog Sciatic Nerve And Gastrocnemius Muscle, Jose Aquiles Parodi Amaya Jan 2015

Design And Implementation Of A Passive Neurostimulator With Wireless Resonance-Coupled Power Delivery And Demonstration On Frog Sciatic Nerve And Gastrocnemius Muscle, Jose Aquiles Parodi Amaya

LSU Master's Theses

The thesis presented has four goals: to perform a comprehensive literature review on current neurostimulator technology; to outline the current issues with the state-of-the-art; to provide a neurostimulator design that solves these issues, and to characterize the design and demonstrate its neurostimulation features. The literature review describes the physiology of a neuron, and then proceeds to outline neural interfaces and neurostimulators. The neurostimulator design process is then outlined and current requirements in the field are described. The novel neurostimulator circuit that implements a solution that has wireless capability, passive control, and small size is outlined and characterized. The circuit is …

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Vibration Control In High-Rise Buildings For Multi-Hazard, Srinivasa Adithya Sailesh Abburu Jan 2015

Vibration Control In High-Rise Buildings For Multi-Hazard, Srinivasa Adithya Sailesh Abburu

LSU Master's Theses

Increasing population and migration of people to cities has led to the construction of high-rise buildings. High-rise buildings have received a renewed interest in many city business locations, where land is scarce, as per their economic, sustainability and other benefits. Taller and taller towers are being built everywhere in the world. However, the increased frequency of multi-hazard disasters makes it challenging to balance between a resilient and sustainable construction. As a saying, ‘with new inventions come new problems’. High-rise buildings usually have issues with increased wind loads brought by, for instance, hurricanes, which can decrease their serviceability and cause failure …

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A Tale Of Two Cultures: A Qualitative Narrative Of Nigerian Immigrant Parenting In The United States, Chinwe Onwujuba Jan 2015

A Tale Of Two Cultures: A Qualitative Narrative Of Nigerian Immigrant Parenting In The United States, Chinwe Onwujuba

LSU Doctoral Dissertations

Current demographic estimates indicate that the foreign-born population makes up about 13% (40 million) of the total U.S. population. This number consists of immigrants from all over the world, with a larger majority originating from Latin America and Asia. Research in the area of immigrant adaptation is robust and compelling; however, it is replete with studies on immigrants from the cultural regions identified above, and not as much on other regions with relatively less numerical representation, specifically Africa. From this region, Nigerian individuals and families make up a larger portion of this immigrant group. This study employs a qualitative research …

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The Impact Of Therapist Self-Disclosure On Client-Perceived Working Alliance Amongst Psychiatrist Inpatients, Sean C. Morrison Jan 2015

The Impact Of Therapist Self-Disclosure On Client-Perceived Working Alliance Amongst Psychiatrist Inpatients, Sean C. Morrison

LSU Doctoral Dissertations

Working alliance has been shown to predict positive psychotherapy treatment outcomes. Past research focuses on therapist characteristics that correlate with working alliance after multiple therapy sessions (e.g., warmth, trustworthy) rather than employing experimental designs examining specific techniques that quickly improve working alliance. Specific techniques that have been empirically shown to improve working alliance quickly may be particularly beneficial today in the age of managed care wherein clinicians often face constraints limiting the amount of time they can spend with clients. Therapist self-disclosure (TSD) of information about a clinician’s personal life, when used appropriately, may have the potential to quickly improve …

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The Skill Of Seasonal Ensemble Low-Flow Forecasts In The Moselle River For Three Different Hydrological Models, Mehmet C. Demirel, Martijn Booij, Arjen Hoekstra Jan 2015

The Skill Of Seasonal Ensemble Low-Flow Forecasts In The Moselle River For Three Different Hydrological Models, Mehmet C. Demirel, Martijn Booij, Arjen Hoekstra

Civil and Environmental Engineering Faculty Publications and Presentations

This paper investigates the skill of 90-day low-flow forecasts using two conceptual hydrological models and one data-driven model based on Artificial Neural Networks (ANNs) for the Moselle River. The three models, i.e. HBV, GR4J and ANN-Ensemble (ANN-E), all use forecasted meteorological inputs (precipitation P and potential evapotranspiration PET), whereby we employ ensemble seasonal meteorological forecasts. We compared low-flow forecasts for five different cases of seasonal meteorological forcing: (1) ensemble P and PET forecasts; (2) ensemble P forecasts and observed climate mean PET; (3) observed climate mean P and ensemble PET forecasts; (4) observed climate mean P and PET and (5) …

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Using Household Travel Surveys To Adjust Ite Trip Generation Rates, Kristina Marie Currans, Kelly J. Clifton Jan 2015

Using Household Travel Surveys To Adjust Ite Trip Generation Rates, Kristina Marie Currans, Kelly J. Clifton

Civil and Environmental Engineering Faculty Publications and Presentations

The Institute of Transportation Engineers (ITE) Trip Generation Handbook has become the predominant method for estimating vehicle trips generated by development. The handbook is often criticized for its inability to account for multimodal behavior in urban contexts, often overestimating vehicle traffic. The purpose of this research is to develop and test a ready-to-use method for adjusting the ITE handbook vehicle trip generation estimates for urban context. This method was created using household travel surveys from Oregon, Washington, and Maryland, as well as nationally available built environment data. Three adjustments were estimated for eight general land-use categories, including a “pooled” category …

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Adjusting Ite’S Trip Generation Handbook For Urban Context, Kelly J. Clifton, Kristina Marie Currans, Christopher D. Muhs Jan 2015

Adjusting Ite’S Trip Generation Handbook For Urban Context, Kelly J. Clifton, Kristina Marie Currans, Christopher D. Muhs

Civil and Environmental Engineering Faculty Publications and Presentations

This study examines the ways in which urban context affects vehicle trip generation rates across three land uses. An intercept travel survey was administered at 78 establishments (high-turnover restaurants, convenience markets, and drinking places) in the Portland, Oregon, region during 2011. This approach was developed to adjust the Institute of Transportation Engineers (ITE) Trip Generation Handbook vehicle trip rates based on built environment characteristics where the establishments were located. A number of policy-relevant built environment measures were used to estimate a set of nine models predicting an adjustment to ITE trip rates. Each model was estimated as a single measure: …

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Examining The Prevalence Rates, Demographic Differences, And Concurrent Validity Associated With A Universal Bidimensional Mental Health Screener For Youth In Schools, Sarah Bolognino Jan 2015

Examining The Prevalence Rates, Demographic Differences, And Concurrent Validity Associated With A Universal Bidimensional Mental Health Screener For Youth In Schools, Sarah Bolognino

LSU Master's Theses

When using a bidimensional mental health (BDMH) model, psychological distress and wellbeing are measured. This study used a mental health screening measure, with equal number of items measuring each mental health dimension (i.e., wellbeing and distress) to classify students into one of four possible mental health groups: mentally healthy (MH), mentally unhealthy (MU), symptomatic but content (SBC), and asymptomatic but discontent (ABD). First, prevalence rates for each group in a sample of youth from the 2009–10 Health Behavior in School-aged Children Survey in the United States (N = 6,345) were explored; about a quarter of the population experienced mixed mental …

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Initial Evaluations Of A U.S. Navy Rapidly Relocatable Gulf Of Mexico/Caribbean Ocean Forecast System In The Context Of The Deepwater Horizon Oil Spill Disaster, Edward D. Zaron, Patrick J. Fitzpatrick, Scott L. Cross, John M. Harding, Frank L. Bub, Jerry D. Wiggert, Dong S. Ko, Yee Lau, Katharine Woodward, Christopher N.K. Mooers Jan 2015

Initial Evaluations Of A U.S. Navy Rapidly Relocatable Gulf Of Mexico/Caribbean Ocean Forecast System In The Context Of The Deepwater Horizon Oil Spill Disaster, Edward D. Zaron, Patrick J. Fitzpatrick, Scott L. Cross, John M. Harding, Frank L. Bub, Jerry D. Wiggert, Dong S. Ko, Yee Lau, Katharine Woodward, Christopher N.K. Mooers

Civil and Environmental Engineering Faculty Publications and Presentations

In response to the Deepwater Horizon (DwH) oil spill event in 2010, the Naval Oceanographic Office deployed a nowcast-forecast system covering the Gulf of Mexico and adjacent Caribbean Sea that was designated Americas Seas, or AMSEAS, which is documented in this manuscript. The DwH disaster provided a challenge to the application of available ocean-forecast capabilities, and also generated a historically large observational dataset. AMSEAS was evaluated by four complementary efforts, each with somewhat different aims and approaches: a university research consortium within an Integrated Ocean Observing System (IOOS) testbed; a petroleum industry consortium, the Gulf of Mexico 3-D Operational Ocean …

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Bacterial Xanthine Dehydrogenase Regulators, Smitha Sivapragasam Jan 2015

Bacterial Xanthine Dehydrogenase Regulators, Smitha Sivapragasam

LSU Doctoral Dissertations

Bacteria are resilient organisms that tend to evolve rapidly in order to acquire abilities to survive in a constantly changing environment. Transcriptional regulators play a vital role in regulating the function of various essential proteins of the cell. The gene encoding Xanthine Dehydrogenase Regulator (XdhR), a transcriptional regulator, is divergently oriented to the gene cluster (xdhABC) encoding Xanthine Dehydrogenase (Xdh) protein in Streptomyces coelicolor, Agrobacterium tumefaciens and Ralstonia solanacearum. Xdh participates in purine salvage pathway in converting adenine to guanine. My research here is aimed at identifying the novel function of Xdh and XdhR in the above mentioned bacteria. XdhR …

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Investigating The Photorecombination Dynamics In Molecular High-Harmonic Spectra, Benjamin Parker Wilson Jan 2015

Investigating The Photorecombination Dynamics In Molecular High-Harmonic Spectra, Benjamin Parker Wilson

LSU Doctoral Dissertations

The work presented in this dissertation will relate the photorecombination dynamics to photoionization dynamics in SF6 utilizing the self-probing mechanism, high harmonic generation (HHG). This work specifically aims to establish parameters for which the comparison is applicable and the macroscopic complications inherent in HHG do not interfere with the extraction of dynamic information. The first part of this work established the macroscopic experimental apparatus necessary for consistent spectroscopic observation. It is shown that using a gas jet that is an order of magnitude shorter than the Rayleigh length of the driving laser results in more consistent harmonic spatial profiles and …

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Forest Stakeholders, Policies And Trade In India's Forest Sector, Joy Das Jan 2015

Forest Stakeholders, Policies And Trade In India's Forest Sector, Joy Das

LSU Master's Theses

The thesis examines a panel of trade flows during 2009-2013, exploring the influence of regulatory quality on the pattern of forest products imports by India from 143 partner countries. The study applies a pooled regression model followed by Generalized Least Squared (GLS) technique and a more robust Feasible Generalized Least Squared (FGLS) method of estimation with regulatory quality, distance between the partner country and India, total forest area of partner country, GDP and population indicators to assess the impact of partner country’s regulatory quality and other trade-related factors on imports of forest products by India. The results support the notion …

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Nucleolar Proteins Are Essential For Ribosome Biogenesis And Nuclear Homeostasis In Drosophila Melanogaster, Yubo Wang Jan 2015

Nucleolar Proteins Are Essential For Ribosome Biogenesis And Nuclear Homeostasis In Drosophila Melanogaster, Yubo Wang

LSU Doctoral Dissertations

Four nucleostemin-like proteins (NS1-4) were identified previously in Drosophila melanogaster. NS1 and NS2 are nucleolar proteins, while NS3 and NS4 are cytoplasmic. Here we show that NS2 is homologous to the human nucleostemin-like protein, Ngp1, and that endogenous NS2 and exogenous GFP-NS2 enriches within peripheral regions of nucleoli in larval polyploid midgut cells. Like NS1, depletion of NS2 in midgut cells blocked the release of the 60S ribosomal subunit as detected by the accumulation GFP-RpL11 within nucleoli, and this likely led to a general loss of 60S subunit proteins as shown by immunoblot analyses. At the ultrastructural level, nucleoli in …

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Characterization Of Adaptive Hyperplasia Of The Intestines Following Roux-En-Y Gastric Bypass And Vertical Sleeve Gastrectomy In Rats, Michael Brodie Mumphrey Jan 2015

Characterization Of Adaptive Hyperplasia Of The Intestines Following Roux-En-Y Gastric Bypass And Vertical Sleeve Gastrectomy In Rats, Michael Brodie Mumphrey

LSU Master's Theses

Bariatric surgery is currently the only treatment for obesity that is effective in both the short and long term. Despite this, little is known about the mechanisms through which these surgeries act. While no single critical system has yet been identified, a number of major hypotheses have been proposed. One hypothesis is that adaptive hyperplasia of the intestines following Roux-en-Y gastric bypass (RYGB) surgery is required in order to receive the beneficial effects of the surgery. In this thesis I characterized the adaptive response of the intestines following RYGB and showed that significant hyperplasia occurs in the intestinal mucosa. In …

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Does The Bicycle Detector Symbol Change Cyclist Queuing Position At Signalized Intersections?, Stefan W. Bussey, Christopher M. Monsere, Peter Koonce Jan 2015

Does The Bicycle Detector Symbol Change Cyclist Queuing Position At Signalized Intersections?, Stefan W. Bussey, Christopher M. Monsere, Peter Koonce

Civil and Environmental Engineering Faculty Publications and Presentations

The Manual of Traffic Control Devices (MUTCD) includes a bicycle detector pavement marking (Section 9C-05) and accompanying explanatory sign (R10-22) which may encourage cyclists to position themselves over detection at traffic signals. This paper presents the results of an observational and survey- based study evaluating the bicycle detector marking. Three minor actuated approaches at signalized intersections with significant bicycle volumes and without bicycle detector markings were selected for treatment. Three configurations were compared: 1) bicycle detector marking only 2) bicycle detector marking with the R10-22 explanatory sign, and 3) an alternative bicycle detector installed over a contrasting green rectangle. Analysis …

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Exploring Thresholds For Timing Strategies On A Pedestrian Active Corridor, Sirisha Murthy Kothuri, Peter Koonce, Christopher M. Monsere, Titus Reynolds Jan 2015

Exploring Thresholds For Timing Strategies On A Pedestrian Active Corridor, Sirisha Murthy Kothuri, Peter Koonce, Christopher M. Monsere, Titus Reynolds

Civil and Environmental Engineering Faculty Publications and Presentations

Traditional signal timing policies have typically prioritized vehicles over pedestrians at intersections, leading to undesirable consequences such as large delays and risky crossing behaviors. The objective of this paper is to explore signal timing control strategies to reduce pedestrian delay at signalized intersections. The impacts of change in signal controller mode of operation (coordinated vs. free) at intersections were studied using the micro-simulation software VISSIM. A base model was developed and calibrated for an existing pedestrian active corridor. A hypothetical network of three intersections was used to explore the effects of mode of operation and measures of delay for pedestrians …

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Dynamic Ventilation And Power Output Of Urban Bicyclists, Alexander Y. Bigazzi, Miguel A. Figliozzi Jan 2015

Dynamic Ventilation And Power Output Of Urban Bicyclists, Alexander Y. Bigazzi, Miguel A. Figliozzi

Civil and Environmental Engineering Faculty Publications and Presentations

Bicyclist intake of air pollutants is linked to physical exertion levels, ventilation rates, and exposure concentrations. Whereas exposure concentrations have been widely studied in transportation environments, there is relatively scant research linking on-road ventilation with travel conditions and exertion levels. This paper investigates relationships among power output, heart rate, and ventilation rate for urban bicyclists. Heart rate and ventilation rate were measured on-road and combined with power output estimates from a bicycle power model. Dynamic ventilation rates increased by 0.4-0.8% per watt of power output, with a mean lag of 0.8 minutes. The use of physiology (ventilation) monitoring straps and …

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Factors Affecting Within-Plant Variation Of Cotton Fiber Quality And Yield, Matthew Oliver Indest Jan 2015

Factors Affecting Within-Plant Variation Of Cotton Fiber Quality And Yield, Matthew Oliver Indest

LSU Doctoral Dissertations

Cotton is sold by weight, but a bale’s lint price per pound is determined by its fiber quality profile. Cotton quality is defined by a set of standardized properties (length, strength, elongation, uniformity, color, trash, and micronaire) collected on every United States bale. Each cotton fiber is the remnant of a single cell which upon harvest exists as a dry, hollow tube of crystalline cellulose. The length, perimeter, and thickness are a fiber’s physical dimensions. These dimensions influence both the mechanics involved in yarn spinning and the quality of the yarn produced. Genetic and environmental factors affect the development and …

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Modeling Two-Phase Flow And Heat Transfer In Polygonal Microchannels, Sai Sashankh Rao Jan 2015

Modeling Two-Phase Flow And Heat Transfer In Polygonal Microchannels, Sai Sashankh Rao

LSU Doctoral Dissertations

Microfluidics is a burgeoning research area with applications ranging from microfluidic cooling to biomolecule synthesis. Here we study two problems to gain an improved understanding of two-phase flow and heat transfer in microfluidic devices. We also study a third problem on boundary layer flow out of theoretical interest. In the first problem, we study the heat and mass transfer in polygonal micro heat pipes under small imposed temperature differences. A micro heat pipe, used in electronics cooling, consists of a closed polygonal microchannel filled with a wetting liquid and a long vapor bubble. We model the evaporation, fluid flow, and …

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Different Approaches To Investigatory Journalism In The Muckraking Era, Tim Vest Klein Jan 2015

Different Approaches To Investigatory Journalism In The Muckraking Era, Tim Vest Klein

LSU Master's Theses

The muckraking era is seen as a golden age of investigatory journalism. This thesis argues that within the muckraking era, there were a number of distinct types of journalism. To understand the muckrakers, we must recognize these different types of investigatory journalism and the potential influence the different types of storytelling can have on public opinion. Fourteen of the preeminent muckrakers are analyzed based on their most important investigatory journalism articles

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Development Of New Linking Chemistry With The Fac-{Re(Co)3}+ Core For Eventual Applications In Radiopharmaceuticals In Imaging And Therapy, Aponsu Meregngna Pramuditha Lakmi Abhayawardhana Jan 2015

Development Of New Linking Chemistry With The Fac-{Re(Co)3}+ Core For Eventual Applications In Radiopharmaceuticals In Imaging And Therapy, Aponsu Meregngna Pramuditha Lakmi Abhayawardhana

LSU Doctoral Dissertations

The facile labeling of biomolecules with a radionuclide is a key goal in radiopharmaceutical development. This study explores two different ligand systems for fac-[Re(CO)3L]+ complexes, that could be used in bioconjugation. The first approach uses a tridentate ligand having a sulfonamide linkage and modeled on previously evaluated fac-[Re(CO)3(N(SO2R)dpa)]PF6 complexes. The present goal was to develop new related sulfonamide complexes with more hydrophilic ligands designed to avoid the bioavailability problems that would plague the N(SO2R)dpa ligand system. A series of fac-[Re(CO)3(N(SO2R)dien)]PF6 complexes with different R groups linked to the central nitrogen of a symmetric tridentate sulfonamides were synthesized with the aim …

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New Orleans, A City Of Layers Preventing Extinction, William Francis Reinhardt Jan 2015

New Orleans, A City Of Layers Preventing Extinction, William Francis Reinhardt

LSU Master's Theses

Preventing the loss of New Orleans occupies the minds of many designers in Louisiana. Great efforts to preserve the city are targeting the slow return to naturalization of the engineered river to find a new balance determined by plan formulators of the Federal government. Throughout history, many experimental movements have been born from the landscape architecture practice, and may be key to the future of New Orleans. Separate chapters are devoted towards the movements created by William Kent, Fletcher Steele, and Jens Jensen to explore as inspiration to be applied to coastal living. Finally, the future of New Orleans is …

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Analyses Of The Mec1 Dna Damage Pathway In Saccharomyces Cerevisiae, William Barrett Ainsworth Jan 2015

Analyses Of The Mec1 Dna Damage Pathway In Saccharomyces Cerevisiae, William Barrett Ainsworth

LSU Doctoral Dissertations

Eukaryotic organisms implement conserved surveillance machinery to sense and respond to DNA damage. Fundamental to the repair process is coordinated regulation of repair genes and initiation of cell cycle arrest protocols. Failure to preserve these checkpoints results in accumulation of mutated DNA and aberrant cell phenotypes that are characteristic of human disease. The yeast, Saccharomyces cerevisiae, utilizes the MEC1 checkpoint pathway to regulate the DNA damage response. This study addressed two overarching themes of transcriptional and post-translational regulation within the MEC1 pathway. We first applied our understanding of the MEC1 DNA damage transcriptional response to develop advanced luciferase whole cell …

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Command Abilities Of Captain Career Course Completers In Maneuver, Fires And Effects: A Self-Perceived Assessment, Michael C. Shaw Jan 2015

Command Abilities Of Captain Career Course Completers In Maneuver, Fires And Effects: A Self-Perceived Assessment, Michael C. Shaw

LSU Doctoral Dissertations

The primary purpose of this study was to determine if a relationship exists between specific demographics of U.S. Army Company Grade Officers that have completed the U.S Army’s Captains Career Course (CCC) in Maneuver, Fires and Effects and their self-perceived capacity to perform as a successful Company Commander. This study included six objectives. The research hypothesis states: Company Grade Officers in the U.S. Army who have held a command position prior to completion of the CCC will have higher self-perceived abilities to function as a successful company commander than those who have not held a command position. The instrument was …

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Correlation Of Ultrasonographic Small Intestinal Wall Layering With Histology In Normal Dogs, Alexandre Benjamin Le Roux Jan 2015

Correlation Of Ultrasonographic Small Intestinal Wall Layering With Histology In Normal Dogs, Alexandre Benjamin Le Roux

LSU Master's Theses

Five intestinal layers are commonly described ultrasonographically in dogs. However, current high-frequency endosonography allows the identification of 9 layers in people. The aim of this study was to describe ex vivo small intestinal layering in dogs and correlate ultrasonographic layering with histological layers. Our hypothesis was that, similar to findings in humans, discrepancies exist in thickness and visibility of intestinal layers between histology and ultrasound in dogs. Twelve adult dogs were included in the study. They were euthanized for reasons unrelated to gastrointestinal disease, but extensive medical history was unavailable. Duodenum, jejunum and ileum samples were resected immediately after euthanasia. …

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Booker T. Washington And The Historians: How Changing Views On Race Relations, Economics, And Education Shaped Washington Historiography, 1915-2010, Joshua Thomas Zeringue Jan 2015

Booker T. Washington And The Historians: How Changing Views On Race Relations, Economics, And Education Shaped Washington Historiography, 1915-2010, Joshua Thomas Zeringue

LSU Master's Theses

“Booker T. Washington and the Historians” analyzes the past century of scholarly writings on Booker T. Washington and seeks to describe the major paradigms used to explain his life and work. Between 1915 and 2010 four major paradigms emerged. The hagiographic paradigm, which offered an uncritical and triumphal account, dominated Washington scholarship from 1915 to 1950. In the 1950s the critical paradigm became widely accepted among historians; Washington was viewed as a compromiser with white supremacists and Northern industrialists. In the 1990s and 2000s the educational paradigm, which focused on Washington’s pedagogy and educational achievements, developed as an alternative to …

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An Afro-Brazilian Landscape: African Oil Palms And Socioecological Change In Bahia, Brazil, Case Watkins Jan 2015

An Afro-Brazilian Landscape: African Oil Palms And Socioecological Change In Bahia, Brazil, Case Watkins

LSU Doctoral Dissertations

Palm oil extracted from the African oil palm (Elaeis guineensis Jacq.) is the world’s most produced vegetable oil, commanding a roughly 50 billion dollar global industry. In contrast to the agroindustrial firms and monocultures that dominate global production, a biodiverse cultural landscape of African oil palms in the northeastern Brazilian state of Bahia has for centuries supplied local alimentary and spiritual demands for palm oil—an essential resource in Afro-Brazilian cultures. Drawing on fieldwork, ethnography, archives, GIScience, quantitative analysis, and travelers’, rare, and secondary accounts, this dissertation provides the first comprehensive study of Bahia’s palm oil landscapes, cultures, and economies. Analyzing …

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Synergistic Properties-Driven Synthesis Of Aluminides, Antiomonides, And Bioceramics, Pilanda Watkins-Curry Jan 2015

Synergistic Properties-Driven Synthesis Of Aluminides, Antiomonides, And Bioceramics, Pilanda Watkins-Curry

LSU Doctoral Dissertations

The synthesis, characterization, and properties of selected intermetallics and ceramic materials are presented in this dissertation. In our quest to grow single crystal intermetallics from the metal flux technique, new strategies were employed to avoid thermodynamically stable phases and to ensure sample homogeneity of the crystalline product for structure elucidation and accurate measurements of their magnetic and electrical properties. The relationship between the complex crystal structures and magnetic properties are reported for LnCo2Al8 (Ln = La-Nd, Sm, Yb), CeCo2-xMnxAl8 (0 < x < 1), and Pr2Fe4-xCoxSb5 (1 ≤ x < 3). The discovery of magnetic frustration in LnCo2Al8 (Ln = Ce, Nd) and complex magnetic ordering coupled with large positive magnetoresistance of up to 150% and 60% at 200 K with relatively low field of H = 1 T in Pr2Fe4-xCoxSb5 (x ≈ 2 and 2.5) is also reported. The demand of new inorganic solid materials as scaffolds for the engineering of bone tissue has led to the synthesis of calcium magnesium silicates such as, diopside (CaMgSi2O6), akermanite (Ca2MgSi2O7), monticellite (CaMgSiO4), and merwinite (Ca3Mg(SiO4)2)) for studying dimensionality and mechanical properties. This dissertation highlights the synergism of solid state chemistry at the interface of condensed matter physics and biological engineering. The discovery of compounds with tunable magnetic, electrical, and mechanical properties will be described herein.

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Dietary Strategies To Influence Appetite: Effects Of Oat Beta-Glucan And Thylakoids From Spinach On Satiety And Reward-Induced Eating Behavior, Candida Joan Rebello Jan 2015

Dietary Strategies To Influence Appetite: Effects Of Oat Beta-Glucan And Thylakoids From Spinach On Satiety And Reward-Induced Eating Behavior, Candida Joan Rebello

LSU Doctoral Dissertations

The objective of these studies was to examine the effects of oat-based cereals and a spinach extract, on eating behavior. The cereals compared included instant oatmeal (IO), old fashioned oatmeal (SO), and a ready to eat cereal (RTEC), each containing the soluble fiber beta-glucan. The spinach extract containing thylakoids, the internal photosynthetic membrane of plants, was compared with a placebo. The first study, a randomized crossover trial compared the effect of IO and SO on subjective ratings of satiety, with the RTEC. Subjects consumed isocaloric 150kcal servings of the cereals in random order. Visual analogue scale ratings evaluating satiety were …

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