Digital Commons Network^™

Effect Of Serving Plate Types And Color Cues On Liking And Purchase Intent Of Cheese-Flavored Tortilla Chips, Cristhiam Gurdian, Damir Torrico, Bin Li, Witoon Prinyawiwatkul

Faculty Publications

No abstract provided.

Social Comparisons In Those With Borderline Personality Disorder Traits: Merging Social Comparison Theory And Social Cognition In Borderline Personality Disorder, Lexie J. Duhon

Honors Capstones

No abstract provided.

Physiology Of Energy Intake In The Weight-Reduced State, Hans Rudolf Berthoud, Randy J. Seeley, Susan B. Roberts

Division of Basic Science Faculty Publications

Physiological adaptations to intentional weight loss can facilitate weight regain. This review summarizes emerging findings on hypothalamic and brainstem circuitry in the regulation of body weight and identifies promising areas for research to improve therapeutic interventions for sustainable weight loss. There is good evidence that body weight is actively regulated in a homeostatic fashion similar to other physiological parameters. However, the defended level of body weight is not fixed but rather depends on environmental conditions and genetic background in an allostatic fashion. In an environment with plenty of easily available energy-dense food and low levels of physical activity, prone individuals …

A Generalized Approach For Sperm Cryopreservation In The Genus Pomoxis: Sperm Cryopreservation And Fertilization Efficiency Of Black-Stripe Black Crappie, Pomoxis Nigromaculatus, Christian A. Shirley, Michael E. Colvin, Terrence R. Tiersch, Peter J. Allen

Faculty Publications

Approaches for white crappie, Pomoxis annularis sperm cryopreservation have led to interest in applying similar methods to black-stripe black crappie, Pomoxis nigromaculatus. Their rarity in wild populations makes them a preferred phenotype for hatchery use. Sperm cryopreservation procedures were compared between black-stripe black crappie and white crappie for sperm motility and egg fertilization rate. There was no difference in black-stripe black crappie sperm motility after thawing between 5% dimethyl sulfoxide (DMSO, 45% motility) and 10% methanol (50% motility). However, fertilization rates were higher (p <.001) for sperm cryoprotected with 5% DMSO (38 ± 8%) than 10% methanol (22 ± 7%). Hatchery use requires sperm-to-egg ratios and fertilizing potential of single doses (i.e., 0.5 ml straw). Using black-stripe black crappie sperm (2.5 × 108 sperm/ml; 5% DMSO), the highest fertilization (27%) was found using single straws with 785 eggs (0.25 ml); total sperm:egg ratio: 159,000:1; motile sperm:egg ratio: 71,700:1. Therefore, sperm of two Pomoxis species could be cryopreserved using 350 mOsmol/kg Hanks' balanced salt solution as an extender, 5% DMSO as a cryoprotectant, cooling at 40°C/min, and thawing for 8 s at 40°C to maintain sperm motility and fertility. Basic protocols can be generalized within a genus if variables such as sperm concentration, process timing, and sample volumes are controlled.

Physical Activity, Inflammation, Coronary Artery Calcification, And Incident Coronary Heart Disease In African Americans: Insights From The Jackson Heart Study, Daisuke Kamimura, Loretta R. Cain-Shields, Donald Clark, Adebamike A. Oshunbade, Kellan E. Ashley, Cameron S. Guild, Paul D. Loprinzi, Robert Newton, Michael J. Blaha, Takeki Suzuki, Javed Butler, John E. Hall, Adolfo Correa, Michael E. Hall

Population and Public Health Science Faculty Publications

Objective: To examine associations between physical activity (PA), inflammation, coronary artery calcification (CAC), and incident coronary heart disease (CHD) in African Americans. Methods: Among Jackson Heart Study participants without prevalent CHD at baseline (n=4295), we examined the relationships between PA and high-sensitivity C-reactive protein, the presence of CAC (Agatston score ≥100), and incident CHD. Based on the American Heart Association's Life's Simple 7 metrics, participants were classified as having poor, intermediate, or ideal PA. Results: After adjustment for possible confounding factors, ideal PA was associated with lower high-sensitivity C-reactive protein levels (β, −0.15; 95% CI, −0.15 to −0.002) and a …

Microwave-Assisted Lignin Liquefaction In Hydrazine And Ethylene Glycol: Reaction Pathways Via Response Surface Methodology, Divine B. Nde, Mohamad Barekati-Goudarzi, Pranjali D. Muley, Lavrent Khachatryan, Dorin Boldor

Faculty Publications

Microwave assisted liquefaction (MAL) of alkali lignin in ethylene glycol (EG) in the presence of hydrazine was carried out using response surface methodology. Dielectric properties of mixtures of lignin/EG at different hydrazine concentrations were determined to enhance the understanding of the MAL process. MAL parameters were hydrazine concentration (1–3%), temperature (100-180 °C), time (5-45 min) with the maximum microwave heating power limited to 750 W. Lignin/EG ratio was fixed at 1 g:10 ml. Dielectric properties were significantly influenced by hydrazine concentration and temperature. Major products from the liquefaction process (as % of peak areas) were grouped into guaiacol and derivatives …

A Review Of The Louisiana Industrial Tax Exemption Program, Cole Smiroldo

Honors Capstones

No abstract provided.

Voice Therapy: Racial Disparities In Adherence And Clinically Significant Outcomes, Amber D. Burks

LSU Master's Theses

Voice therapy is evidence-based, behavioral intervention that can reduce functional and organic voice disorders. Despite its proven effectiveness, non-adherence to voice therapy is still an issue. Research shows that an estimated 65% of patients who initiate voice therapy drop out before reaching therapeutic goals. Voice therapy outcomes are largely dependent on patients’ adherence to treatment regimens, but there is limited information concerning factors that may be associated with voice therapy adherence and therapeutic outcomes for patients who successfully complete voice therapy.

The purpose of this study was to investigate which demographic factors could be associated with higher adherence rates to …

Genomic Studies Of Beaf-32 In Drosophila, John Keller Mckowen Iii

LSU Doctoral Dissertations

Compared to humans, the model organism Drosophila melanogaster is particularly gene dense and encodes several insulator binding proteins (IBP) to aid in its genome organization. Our focus of research is a particular IBP, Boundary Element-Associated Factor of 32kD (BEAF). BEAF primarily binds near the promoters of constitutively active housekeeping genes. It is thought to help maintain the active state of these genes by preventing the spread of repressive chromatin. Additionally, the enhancer blocking activity of BEAF is thought to prevent aberrant activation or silencing of genes. BEAF appears to be ubiquitously expressed among cells and tissues, albeit at varying levels. …

Determining The Effects Of Exogenous Human Chorionic Gonadotropin And Pregnant Mare Serum Gonadotropin On Plasma Testosterone, Testicular Volume, And Semen Production In Leopard Geckos (Eublepharis Macularius), Alexandra Mason

LSU Master's Theses

Planet earth has now entered into its sixth mass extinction as a result of expanding human populations, posing an unprecedented threat to biologic diversity. Climate change, habitat fragmentation, wildlife trade, pollution, and biological invasions are just a few consequences of human activities that have directly contributed to unprecedented species extinctions. While widespread amphibian declines have gained more recent attention, it has been proposed that reptiles may be in even greater danger of extinction worldwide. Unfortunately, many reptiles are destined to go extinct before many of their basic biologic traits, including reproductive methods, have even been determined.

In order to mitigate …

Three Essays On Mahatma Gandhi National Rural Employment Guarantee Scheme, Rakhe Balachandran

LSU Doctoral Dissertations

India’s Mahatma Gandhi National Rural Employment Guarantee Scheme (MGNREGs) is the largest public works program in the world with an objective to ensure rural livelihood security by generating employment through infrastructure projects. This thesis is comprised of three essays investigating the MGNREGs’ impact on rural communities and the labor market. The first essay examined the targeting accuracy of the program. I simultaneously controlled for the self-selection bias and endogeneity bias between poverty and program participation using an extended probit model. Using data from National Sample Survey (NSS) 2014, I find that households closer to the poverty line are more likely …

The Arena Players, Inc.: The Oldest Continuously Operating African American Community Theatre In The United States, Alexis Michelle Skinner

LSU Doctoral Dissertations

Hay (1994) gave the Arena Players the moniker, “the oldest continuously operating African American community theatre company” in the U.S. But, if Black Theatre is increasingly found in mainstream venues in regional theatre and Broadway while Black Drama is relegated to syllabi, where is the living practice of African American, or black, community theatre? And what guarantees its survival? Craig (1980) and Fraden (1994) give voice to black critics, like Locke (1925), in co-creating objectives for black theatre during the FTP which took stage as the Negro Little Theatre continued. Hill & Hatch (2003) solidify the geographical and ideological connections …

Assessing The Validity Of The Estimation Of Population Affinity From The Maxillary Hard Palate: An Empirical Approach Using A Modern Forensic Sample, Christopher M. Goden

LSU Master's Theses

In response to Beathard and DiGangi’s (2020) call to action for empirical assessment of population affinity estimation methodology, this study investigates the validity of maxillary palate shape as an indicator of ancestral population affinity for human skeletal remains through the use of Elliptical Fourier Analysis (EFA) and Linear Discriminant Function Analysis (DFA). Further, this study also places emphasis on the expressed variation of palate shape within and between population groups exemplified by Principal Component Analysis (PCA) of EFA data.

Computed tomography scans of 180 individuals of Black, White, and Hispanic population affinities were obtained from the New Mexico Decedent Imaging …

Modeling Cumulative Risk During The Covid-19 Pandemic: Psychosocial And Socioeconomic Factors For Older Minority Adults, James F. Osborne Iv

LSU Master's Theses

Continued response to the sum consequences of the COVID-19 pandemic has disparately affected the physical and mental health of older minority adults in the United States. SARS-CoV-2 created an acute epidemiological crisis of public health coinciding with a chronic pandemic of accentuated psychosocial stress. Biological and socio-economic risk of morbidity and mortality follow a demographic gradient of subjectively constructed social status that disproportionally threatens older adults and minority racial/ethnic communities. Pathways to increased socio-economic and psychosocial vulnerability are multifactorial and complex. Factors of race, socio-economic status, gender, and age, each contribute to individualized profiles of vulnerability to risk exposure.

The …

Use Of A Zebrafish Model To Identify Anticonvulsant Properties Of Cannabinoid And Terpenoid Extracts And Mixtures, Courtney Murr

LSU Master's Theses

Epilepsy is a complex group of neurological disorders affecting approximately 65 million people worldwide. Animal models reveal the activation of cannabinoid receptor 1 and cannabinoid receptor 2 reduces the severity of seizures associated with epilepsy. Trials of phytocannabinoids in mammals demonstrate their efficacy of reducing the severity of epileptic seizures. Numerous terpenoid compounds are present in Cannabis plants but most have yet to be clinically investigated. The goal of this research was to use zebrafish (Danio rerio) to identify the potential anticonvulsive properties of phytocannabinoid and terpenoid compounds. During acute cannabinoid exposures, 7-days-post-fertilization (7 dpf) zebrafish larvae were …

How "Lyingnewspapers" Made Huey Long The Ruler Of His State: A Model Of Press-Populist Dynamics, Christina A. Georgacopoulos

LSU Master's Theses

Huey Long’s use of the phrase “lyingnewspapers” to discredit negative publicity is commonly cited as evidence of his negative relationship with the mainstream press, but he did not always hold a hostile view toward newspapers. Before the press turned against him during his enemies' attempt to impeach him as governor in 1929, newspapers were one of his central tools for political advancement. He devised strategies to attract press attention and relied on newspapers to publicize himself and propagate his ideas more frequently and consistently than he used circulars or radio broadcasts, which are commonly attributed to his political success. As …

The Effect Of Fallow Season Cover Crops On Nutrient Cycling And Soil Health In Row Crop Production In The Mid-South, Kritsanee Iamjud

LSU Doctoral Dissertations

The reliance on conventional cropping has profoundly impacted agricultural sustainability and resulted in soil degradation. Winter cover crops can preserve the soil surface, recycle soil nutrients, and improve soil health. Hence, the role of cover crops in Louisiana row-crop production was examined in small-scale plots and large-scale on-farm studies at three sites in Northeast Louisiana from 2017 to 2020. Additionally, mixed cover crops degradation and nutrient release were evaluated at Macon Ridge and Dean Lee sites to determine the optimum time of nutrient availability after cover crop termination. The small-scale results showed that integrating cover crops for corn (Zea …

Adsorption And Transport Of Colloids At Interface And In Bulk, Jingyun Lee

LSU Doctoral Dissertations

Colloids are suspensions of microscopic insoluble particles dispersed in a continuum phase such as liquid or gas. Colloids are found in our everyday life from food and cosmetic industries to pharmaceutical and biomedical applications. Depending on a global minimum of the free-energy landscape, colloidal suspensions can be classified as two major classes: equilibrium or active colloidal system. This Ph.D dissertation presents strategies to engineer equilibrium self-assembled structures and out-of-equilibrium active matter using various interparticle forces.

First, we introduce the means to promote the equilibrium self-assembled structures driven by adsorption of colloids at interface. Typically, adsorption of colloids at interface is …

Antioxidant Properties Of Pecan Shell Bioactive Components Of Different Cultivars And Extraction Methods, Cameron Cason, Veerachandra K. Yemmireddy, Juan Moreira, Achyut Adhikari

Faculty Publications

Pecan shells are a rich source of various bioactive compounds with potential antioxidant and antimicrobial properties. This study investigated the effect of pecan variety and method extraction on the antioxidant property of shell extracts. Twenty different varieties of pecan shells were subjected to either aqueous or ethanolic extraction and were examined for total phenolics and antiradical activity. The phenolic content and antiradical activity of shell extracts were significantly (p < 0.05) varied with different pecan cultivars. The total phenolic content of ethanol extracts ranged from 304.2 (Caddo) to 153.54 (Cherokee) mg GAE/g of dry extract and was significantly greater (p < 0.05) than those obtained by aqueous extraction. The antiradical activity of ethanol extracts ranged from 840.6 (Maramec) to 526.74 (Caper Fear) mg TEg-1, while aqueous extracts ranged from 934.9 (Curtis) to 468.3 (Elliot) mg TEg-1. Chemical profiling of the crude and acid hydrolyzed extracts was performed by reverse phase high performance liquid chromatography and flow injection electrospray ionization mass spectrometry. Lignin degradation products such as lignols, dilignols, trilignols, and oligolignols were found to be the major components of tested extracts. Phenolic content and antiradical activity of pecan shell extracts are significantly varied with cultivars and methods of extraction.

Hydro-Morphodynamics Of Sandy Coastal Embayments, Shamim Murshid

LSU Doctoral Dissertations

This dissertation investigates the hydro-morphodynamics of two major components of a sandy coastal environment: tidal inlets and embayment shorelines. In the first study, I focused on the evolution of inlet geometry by compiling and analyzing a database with 226 inlets worldwide with a special attention given to their width to depth ratio (or aspect ratio). I found that the aspect ratio has a weak dependency on tidal range and wave height, and they lie in different ranges for three types of tidal inlets: engineered, natural single-thread, and natural compound. I also developed a 2D hydro-morphodynamic model of an idealized barrier-inlet …

Revisiting Reif And Schmitt: Second-Order Effects In European Parliament Elections, 1979-2019, Jordan Kyje Landry

LSU Doctoral Dissertations

Are elections to the European Parliament (EP) truly “second-order” reactions to “first-order” national elections and politics? Ever since Reif and Schmitt (1980), the consensus in both academic and journalistic accounts has been a resounding yes. However, comprehensive quantitative confirmation of this consensus has been lacking, and those studies that have been done have been temporally limited, regionally limited, or at least somewhat critical of Reif and Schmitt’s observations. After setting the stage with a historical account of the EP’s creation and evolution, I attempt to fill this lacuna by constructing a new data set of party-election observations (over 1300 in …

Non-Newtonian Model Development For Post-Wildfire Flood Risk Management, Ian Eli Floyd

LSU Doctoral Dissertations

Wildfire effected regions of the western U.S. frequently produce non-Newtonian floods (or floods that have a non-linear relationship between stress and deformation) in response to moderate to severe precipitation events. This research presents the development, evaluation, and demonstration of a post-wildfire hydrodynamic one-dimensional and two-dimensional diffusive wave and shallow-water numerical modeling approach that can be used to predict post-wildfire downstream runout of debris flows and floodplain inundation conditions. While researchers have developed a variety of Non-Newtonian approaches to simulate debris flows and mudflows, there has been very limited application to post-wildfire flooding. This can make it difficult to understand the …

Identification And Reduction Of Scattered Light Noise In Ligo, Siddharth Soni

LSU Doctoral Dissertations

We ushered into a new era of gravitational wave astronomy in 2015 when Advanced LIGO gravitational wave detectors in Livingston, Louisiana and Hanford, Washington observed a gravitational wave signal from the merger of binary black holes. The first detected GW150914 was a part of first Observing run (O1) and since then there have been a total of 3 Observing runs. Advanced Virgo detector in Cascina, Italy joined the efforts in the third Observing run (O3) which spanned from April 1, 2019, to March 27, 2020. It was split into O3a and O3b with a month long break between them, during …

The State Of Immigration: An Analysis Of Attitudes Towards Immigration Policies, Economic Context And Political Ideology, Heather Kuntz

LSU Master's Theses

Division of attitudes towards immigration policy is more polarized than ever (Public Religion Research Institute, 2018). Historically, restrictive attitudes towards immigration policies have been highest in times of rising nationalist ideals and economic vulnerability (Jaret, 1999; Ngai, 2004). Primarily a federal responsibility, immigration enforcement was decentralized and that power shared with individual states (Pantoja, 2006), leading to policy disparities among states (Butz & Kehrberg, 2019; Gulasekaram et al., 2015; Johnson, 2019). Studies focusing on the relationship between state economic context and immigration policies, found that states that are more economically vulnerable had higher numbers of restrictive immigration policies (Ybarra et …

Emulsion Templating Application For Synthesis Of A Porous Zein Biocompatible Oil Adsorbent, Nathan Holley

LSU Master's Theses

The recovery of spilled oil from water sources using hydrophobic porous absorbent has gained significant interest due to the ease of implementation, large-scale adaptability, and robust nature of the technique. However, the lack of biodegradability of these synthetic adsorbents has caused concern of further contaminating the environment from the generation of microplastic waste that is known to persist and accumulate in the marine food chain and other ecosystems. To mitigate this potential hazard, a new biocompatible alternative is needed to replace the non-degradable synthetic materials currently used. This thesis presents ZEin-based Low Density porous Absorbent (ZELDA), synthesized using a particle …

Transport-Related Social Exclusion In East Baton Rouge Parish, Andrew Dietz

LSU Master's Theses

Transportation systems are powerful tools, capable of entrenching existing inequalities or facilitating the pursuit of a more equitable society (Wellman, 2015). This is particularly true for urban areas that are plagued by sprawl, congestion, and racialized poverty like East Baton Rouge Parish. Transport-related social exclusion (TRSE) provides a framework for understand the relationship between access to transportation (or lack thereof, known as transport disadvantage) and individuals’ ability to participate in the economic, social, cultural, and political aspects of life (Kamruzzaman, Yigitcanlar, Yang, & Mohamed, 2016) Transport-related social exclusion is associated with numerous negative outcomes including poor mental and physical health, …

Identity Construction In The Yoruba Group Project Abroad: Discourse Analysis Of Language Use, Tawakalitu Odunayo Lasisi

LSU Master's Theses

This research examines the experiences of five Nigerian Americans who participated in the Yoruba Group Project Abroad in the year 2018. After taking classes on Yoruba language at the basic, intermediate and advanced levels in their various universities here in the US, the students traveled to Nigeria in the summer of 2018 to immerse themselves in the native speakers’ environment in Ibadan, Nigeria. While in Ibadan, they were paired with Nigerian host families (Yoruba speakers) in order to have an overarching immersive experience. These students constitute the population of this research. Using a qualitative research method and an in-depth online …

Temperature Gradient Effects On Behavior And Design Of Prestressed Concrete Girder Bridges, Ahmed Saad Elsayed Mohamed Elshoura

LSU Doctoral Dissertations

Temperature variation is an inevitable environmental loading type that affects bridges. Considering temperature effects during structural design is deemed essential for short, medium, and long span bridges. Temperature loading can be categorized into three components; uniform temperature, vertical temperature gradient, and transverse temperature gradient. Temperature variation causes additional movements, stresses, and internal forces that should be considered in the design of bridges. In this study, the temperature effects of vertical and transverse temperature gradients are investigated for continuous prestressed concrete bridges.

Thermal restraint moments induced by vertical temperature gradients on prestrssed concrete bridges are investigated by performing three-dimensional (3D) finite …

Educational Theory-Embedded Training For Construction Industry Professionals, Hazem Jadallah

LSU Doctoral Dissertations

Workforce training is needed throughout the construction industry to create and maintain competent workers; unfortunately, most construction training and education research focuses on university student education. The focus of this dissertation research is the current state of educational-theory embedded construction workforce training, how such trainings are effective, and how they may be further optimized based on established educational theory. This is accomplished through a review of construction training for current industry professionals, an evaluation of the assessment criteria used to measure effectiveness, followed by the creation of a framework for construction training.

There is a lack of recommendations for improvement …

Mapping Louisiana's Missing: Spatiotemporal Profiling Of Louisiana's Missing Persons- An Experimental Application Of Geographic Information Systems And Forensic Anthropology, Liam J. Johnson

LSU Master's Theses

The growing number of unresolved unidentified and missing persons cases in the United States is this nation’s ‘silent mass disaster’ (Ritters, 2007). In addition to contextualizing biocultural traits of these cases, forensic anthropologists are uniquely qualified to address this underrecognized humanitarian crisis due to their proven ability to bridge conflicting stakeholders in often complex sociopolitical environments and to create improved opportunities for community collaboration. This project explores local and state demographic trends of missing persons cases and how this information can be used to assist investigative agencies with their missing population, analyzes gaps in identification data, and selects optimal locations …