Digital Commons Network^™

Round Ii: Exploring The Experiences Of Black, First-Generation Graduate And Professional Students At Historically Black Colleges And Universities (Hbcus), Derrick D. Lathan

LSU Doctoral Dissertations

This phenomenological study explores the experiences of Black, first-generation (first-gen) students pursuing advanced degrees at historically Black colleges and universities (HBCUs), following the COVID-19 pandemic and racial justice movements like Black Lives Matter. Additionally, this study examines the present-day motivations to pursue advanced degrees, particularly the benefits of doing so at an HBCU. The main research question guiding this study is: What are the experiences of Black, first-gen graduate and professional students at historically Black colleges and universities (HBCUs)? The sub-questions are:

1. How do Black, first-gen graduate and professional students describe being a first-gen student?
2. What barriers and supports impact …

Applied Depositional Geosystems Of The Coos Bay Basin, Oregon: Organic Geochemistry, Maturation, Paleoenvironmental Reconstruction And Biostratigraphy Of The Coaledo Delta During The Middle Eocene Climatic Optimum (Meco), Allison K. Barbato

LSU Doctoral Dissertations

The Coos Bay Basin on the southwestern coast of Oregon is a forearc basin that contains exceptionally preserved Eocene to Miocene, tidal to wave-dominated, shallow deltaic to deep marine sediments of the Coaledo Delta. Coastal depositional environments are known to host source, reservoir, and seal rocks. Climate, topographic relief, and geographical position all play an important role in regional vegetation development and oceanic setting. This study assesses 84 outcrop and 12 core samples from Coos Bay for their organic geochemical characteristics and microfossil assemblage to provide source rock characterization information, organofacies descriptions, environmental reconstructions, and age control.

Results indicate the …

A Study Of Select Arias From Three Obscure Operas By Antonio Vivaldi: ‘Ottone In Villa,’ ‘Arsilda, Regina Di Ponto,’ And ‘Il Farnace’, Qinan Cai

LSU Doctoral Dissertations

This paper provides an analysis of select compositional tools found in chosen arias from Antonio Vivaldi’s lesser-known operas, Ottone in Villa RV 729, Arsilda, Regina di Ponto RV 700, and Farnace RV 711. It aims to illuminate Vivaldi’s exploration of human emotions and relationships through his music. The research focuses on select arias from each opera, emphasizing Vivaldi’s compositional style, use of sequential patterns, development of harmonic shifts in the music, and the inclusion of the Lombardic rhythm. In addition, commentary is included regarding the application of modal principles, and rhythmic speech patterns. The study also offers historical context and …

Maria Rosa Ribas Monné: A Case Study, Rebeca Lemos Gonzalez

LSU Doctoral Dissertations

This dissertation explores the musical legacy of Catalan composer Maria Rosa Ribas Monné, emphasizing the influence of the Catalan context on her compositions and recognizing the contributions of Spanish women in music, particularly in cello music. Through an in-depth exploration of Maria Rosa's life, musical perspective, and analysis of her works "Faust", "Disperato,"and "Record d'una música," this study unveils pivotal insights into her artistic journey. Additionally, it includes a comprehensive catalogue of her compositions, providing a detailed overview of her musical output.

The dissertation begins by examining how M. Rosa Ribas' deep connection to Catalan culture, influenced by poet Màrius …

“Just One Simple Question: How Do We Protect Her?” The Role Of State Governments In Preventing Female Murders By Intimate Partners, Chesani Askew

Honors Capstones

No abstract provided.

Field Evaluation Of Experimental Maize Hybrids For Resistance To The Fall Armyworm (Lepidoptera: Noctuidae) In A Warm Temperate Climate, Xinzhi Ni, Alisa Huffaker, Eric A. Schmelz, Wenwei Xu, W. Paul Williams, Baozhu Guo, Xianchun Li, Fangneng Huang

Faculty Publications

The polyphagous fall armyworm (FAW), Spodoptera frugiperda, has become an invasive pest worldwide in recent years. To develop maize germplasm with multiple pest resistance and understand genetic inheritance, 12 experimental hybrids (six pairs of reciprocal crosses) with diverse genetic backgrounds and four commercial checks were examined for FAW resistance in 2013 and 2014. The experiment utilized a randomized complete block design with four replications as the block factor. FAW injury on maize plants was assessed at 7 and 14 d after the artificial infestation at the V6 stage, and predatory arthropod taxa and abundance on maize seedlings were recorded 7 …

Louisiana Agriculture Magazine, Spring 2024, Lsu Agcenter

Louisiana Agriculture

Louisiana’s warm, subtropical climate allows producers to raise an array of crops and livestock. It also provides challenges. Tropical storm winds can lay down rice and cane crops. Ample rain can turn into crop-damaging floods. Last year, a drought struck the southeastern United States, leading to more than $100 million in losses for the cattle sector.

In these cases, LSU AgCenter specialists respond to individual producers’ needs. In each parish AgCenter Extension agents help connect producers with needed resources and become a conduit for the latest knowledge gleaned from scientists at AgCenter research stations across the state.

This issue of …

Pregnane X Receptor Knockout Mitigates Weight Gain And Hepatic Metabolic Dysregulation In Female C57bl/6 J Mice On A Long-Term High-Fat Diet, Lidya H. Gebreyesus, Sora Choi, Prince Neequaye, Mattia Mahmoud, Mia Mahmoud, Malvin Ofosu-Boateng, Elizabeth Twum, Daniel O. Nnamani, Lijin Wang, Nour Yadak, Sujoy Ghosh, Frank J. Gonzalez, Maxwell A. Gyamfi

Division of Basic Science Faculty Publications

Obesity is a significant risk factor for several chronic diseases. However, pre-menopausal females are protected against high-fat diet (HFD)-induced obesity and its adverse effects. The pregnane X receptor (PXR, NR1I2), a xenobiotic-sensing nuclear receptor, promotes short-term obesity-associated liver disease only in male mice but not in females. Therefore, the current study investigated the metabolic and pathophysiological effects of a long-term 52-week HFD in female wild-type (WT) and PXR-KO mice and characterized the PXR-dependent molecular pathways involved. After 52 weeks of HFD ingestion, the body and liver weights and several markers of hepatotoxicity were significantly higher in WT mice than in …

Modeling And Numerical Analysis Of The Cholesteric Landau-De Gennes Model, Andrew L. Hicks

LSU Doctoral Dissertations

This thesis gives an analysis of modeling and numerical issues in the Landau-de Gennes (LdG) model of nematic liquid crystals (LCs) with cholesteric effects. We derive various time-step restrictions for a (weighted) $L^2$ gradient flow scheme to be energy decreasing. Furthermore, we prove a mesh size restriction, for finite element discretizations, that is critical to avoid spurious numerical artifacts in discrete minimizers that is not well-known in the LC literature, particularly when simulating cholesteric LCs that exhibit ``twist''. Furthermore, we perform a computational exploration of the model and present several numerical simulations in 3-D, on both slab geometries and spherical …

The Politics Of Non-State Provisioning In The Middle East And North Africa, E Celeste Cavell

Honors Capstones

No abstract provided.

Coming To America: Exploring The Cross-Cultural Adaptation Of African International Students At A Pwi And Hbcu In The U.S. South, Adwoa F. Baffour

LSU Master's Theses

African international students undergo significant challenges in their cross-cultural adaption in the United States. The cross-cultural adaptation of international students, particularly those from African countries, in a new environment assumes paramount importance due to its direct correlation with their mental and social well-being (Shafaei and Razak, 2016). Furthermore, the mental and social well-being of African international students attending universities in the southern United States has a profound impact on their overall success and overall college experience. This underscores the urgent need for future research to delve deeper into the cross-cultural adaptation experiences of African international students at United States universities, …

The Trump Effect: How Partisanship Shapes Perceptions Of The Fbi, Carly A. Watts

LSU Master's Theses

Following the 2016 presidential election, some Republicans viewed the Federal Bureau of Investigation (FBI) as politically biased because the agency investigated the Trump campaign's possible collusion with the Russian government. Soon after, public opinion polling found that Republicans had diminishing levels of support for the agency. Using the 2020 ANES, I examine how partisanship affects perceptions of the FBI. I hypothesize that the relationship between partisanship and FBI evaluations is conditional on an individual's support for Donald Trump. The results from my analysis suggest that as support for Trump increases, the relationship between Republican partisan strength and FBI evaluations weakens.

You’Re Looking Very Shane Today: Rhetorical Field Methods & The Materiality Of Queer Mediated Representation For Sapphic Women, Ariel L. Kizer

LSU Doctoral Dissertations

When marginalized communities are left without real-life mentors, they often turn to media as a guide. In this project I assert that mediated sapphic woman characters impact the identity development and everyday experiences for sapphic women in material ways. I explore what mediated narratives sapphic women consume and analyze how these messages become symbolic rhetorical tools that queer women rhetorically mobilize to narrativize and negotiate their queer identities. To achieve this goal, I utilized rhetorical field methods by interviewing 20 queer women ranging from the ages of 25-40 in dyadic, semi structured interviews. These women use varying terms to label …

Development Of Accurate Embedded Fracture Models For Naturally Fractured Reservoirs, Harun Ur Rashid

LSU Doctoral Dissertations

Natural fractures play a critical role in the performance of unconventional oil, gas, and geothermal reservoirs due to their prevalent occurrence within these systems. However, modeling these fractures accurately and efficiently is still challenging. This work centers on an extensive analysis of naturally fractured systems and proposes new fracture modeling algorithms that can predict the performance of fractured tight rocks accurately and efficiently. Several researchers have explored various methodologies to accurately and efficiently model fractured reservoirs. Among the approaches that can account for each individual fracture in these reservoirs, the embedded discrete fracture model (EDFM) is one of the most …

Investigating Gulf Coast Aquifer System: Stratigraphy Reconstruction, Inverse Modeling, And Groundwater Stress Assessment, Shuo Yang

LSU Doctoral Dissertations

The Mississippi Embayment aquifer system (MEAS) and the Coastal Lowlands aquifer system (CLAS) provide substantial groundwater resources for human activities in the U.S. Gulf Coastal Plain. However, the overexploitation has led to groundwater depletion in the MEAS and the CLAS, threatening sustainable groundwater use. Such concern highlights the crucial need for an advanced understanding of stratigraphy and groundwater in these aquifer systems, which is essential for effective regional groundwater management. This dissertation presents a comprehensive investigation of MEAS and CLAS in the Louisiana and southwestern Mississippi region, encompassing three fundamental dimensions: stratigraphy reconstruction, groundwater modeling, and groundwater stress assessments. A …

"In The Footsteps Of Hercules": The Influence Of Classical Antiquity On Eighteenth-Century Militaries, Scott Madere

LSU Doctoral Dissertations

This project examines the pervasive influence of ancient Roman and Greek figures, historical events, literature, and military methods on the leaders and practitioners of eighteenth-century warfare. Rulers, generals, military theorists, and officers frequently consulted classical histories and literature for solutions to the common military problems of the period – tactical, operational, and strategic – showing remarkable faith in ancient military methods despite their growing dependence on gunpowder weaponry and related technologies. This dissertation examines why this was the case and concludes that classical antiquity not only maintained the credibility of its wisdom in the context of modern warfare, but also …

Deconstructing The Mangrove Carbon Cycle: Gains, Transformation, And Losses, M. F. Adame, N. Cormier, P. Taillardat, N. Iram, A. Rovai, T. M. Sloey, E. S. Yando, J. F. Blanco-Libreros, M. Arnaud, T. Jennerjahn, C. E. Lovelock, D. Friess, G. M.S. Reithmaier, C. A. Buelow, S. M. Muhammad-Nor, R. R. Twilley, R. A. Ribeiro

Faculty Publications

Mangroves are one of the most carbon-dense forests on the Earth and have been highlighted as key ecosystems for climate change mitigation and adaptation. Hundreds of studies have investigated how mangroves fix, transform, store, and export carbon. Here, we review and synthesize the previously known and emerging carbon pathways in mangroves, including gains (woody biomass accumulation, deadwood accumulation, soil carbon sequestration, root and litterfall production), transformations (food web transfer through herbivory, decomposition), and losses (respiration as CO2 and CH4, litterfall export, particulate and dissolved carbon export). We then review the technologies available to measure carbon fluxes in mangroves, their potential, …

Claudin-1 As A Novel Target Gene Induced In Obesity And Associated To Inflammation, Fibrosis, And Cell Differentiation, Pablo Fernández-García, Siri D. Taxerås, Marjorie Reyes-Farias, Lorena González, Andrea Soria-Gondek, Silvia Pellitero, Jordi Tarascó, Pau Moreno, Lauro Sumoy, Jacqueline M. Stephens, Lindsey G. Yoo, María Galán, Adriana Izquierdo, Gema Medina-Gómez, Laura Herrero, Patricia Corrales, Francesc Villarroya, Rubén Cereijo, David Sánchez-Infantes

Division of Basic Science Faculty Publications

Objective: T lymphocytes from visceral and subcutaneous white adipose tissues (vWAT and sWAT, respectively) can have opposing roles in the systemic metabolic changes associated with obesity. However, few studies have focused on this subject. Claudin-1 (CLDN1) is a protein involved canonically in tight junctions and tissue paracellular permeability. We evaluated T-lymphocyte gene expression in vWAT and sWAT and in the whole adipose depots in human samples. Methods: A Clariom D-based transcriptomic analysis was performed on T lymphocytes magnetically separated from vWAT and sWAT from patients with obesity (Cohort 1; N = 11). Expression of candidate genes resulting from that analysis …

Speculating About Genocide: The Queensland Frontier 1859–1897, Mark Finnane, Jonathan Richards

Faculty Publications

In the colonisation of Queensland, Australia it is commonly accepted that large numbers of Indigenous people were killed in the second half of the nineteenth century. Calculations of violent mortality have recently been revised radically upwards. We suggest that the methodology deployed in these new studies is unreliable, reflecting errors in counting and calculation, as well as underestimating the selection bias of the samples. We caution against projecting aggregate violent mortality where the underlying data are so imperfect and emphasise the value of more detailed local and regional studies to inform better understanding of colonisation's impact on First Peoples.

Influence Of Hesperidin On The Physico-Chemical, Microbiological And Sensory Characteristics Of Frozen Yogurt †, Roberto Cedillos, Ricardo S. Aleman, Ryan Page, Douglas W. Olson, Charles Boeneke, Witoon Prinyawiwatkul, Kayanush Aryana

Faculty Publications

Frozen yogurts contain yogurt culture bacteria, which might impart health benefits to their consumers. Global frozen yogurt market sales are expected to grow by 4.8% by 2028, which represents an important opportunity for the industry, consumers and researchers. Polyphenols are metabolites found in plants which have antioxidant and anti-inflammatory properties and might prevent chronic diseases such as cancer, diabetes and cardiovascular diseases. The objective of this study was to elucidate the effect of the polyphenol hesperidin on the physico-chemical, microbiological and sensory characteristics of frozen yogurts. Hesperidin was incorporated into frozen yogurt at three concentrations (125, 250 and 500 mg/90 …

Sustainable Sweetpotato Production In The United States: Current Status, Challenges, And Opportunities, Justin George, Gadi V.P. Reddy, Phillip A. Wadl, William Rutter, Julianna Culbreath, Pierre W. Lau, Tahir Rashid, Matthew C. Allan, Suzanne D. Johaningsmeier, Amanda M. Nelson, Ming Li Wang, Augustine Gubba, Kai Shu Ling, Yan Meng, Daniel J. Collins, Sathish K. Ponniah, Prasanna H. Gowda

Faculty Publications

Sweetpotato (Ipomoea batatas L.) is an important staple crop cultivated in over 100 countries, and the storage roots and vines provide food for humans and livestock. Sweetpotato consumption and demand for its value-added products have increased significantly in the last two decades and have led to new cultivar development, expansion in acreage, and increased demand in the United States and its export markets. Despite the known nutritional components and other health benefits, further research is needed to characterize the genetic diversity and chemical composition related to their storage root qualities, essential in developing consumer-preferred cultivars that offer host plant resistance …

Two-Pore Potassium Channel Trek-1 (K2p2.1) Regulates Nlrp3 Inflammasome Activity In Macrophages, Camille N. Immanuel, Bin Teng, Brittany E. Dong, Elizabeth M. Gordon, Charlean Luellen, Benjamin Lopez, Jeffrey Harding, Stephania A. Cormier, Elizabeth A. Fitzpatrick, Andreas Schwingshackl, Christopher M. Waters

Division of Basic Science Faculty Publications

Because of the importance of potassium efflux in inflammasome activation, we investigated the role of the two-pore potassium (K2P) channel TREK-1 in macrophage inflammasome activity. Using primary alveolar macrophages (AMs) and bone marrow-derived macrophages (BMDMs) from wild-type (wt) and TREK-1–/– mice, we measured responses to inflammasome priming [using lipopolysaccharide (LPS)] and activation (LPS þ ATP). We measured IL-1b, caspase-1, and NLRP3 via ELISA and Western blot. A membrane-permeable potassium indicator was used to measure potassium efflux during ATP exposure, and a fluorescence-based assay was used to assess changes in membrane potential. Inflammasome activation induced by LPS þ ATP increased IL-1b …

An Island ‘Endemic’ Born Out Of Hybridization Between Introduced Lineages, Jessie F. Salter, Robb T. Brumfield, Brant C. Faircloth

Faculty Publications

Humans have profoundly impacted the distribution of plant and animal species over thousands of years. The most direct example of these effects is human-mediated movement of individuals, either through translocation of individuals within their range or through the introduction of species to new habitats. While human involvement may be suspected in species with obvious range disjunctions, it can be difficult to detect natural versus human-mediated dispersal events for populations at the edge of a species' range, and this uncertainty muddles how we understand the evolutionary history of populations and broad biogeographical patterns. Studies combining genetic data with archaeological, linguistic and …

A Pragmatic Trial Of A Family-Centered Approach To Childhood Obesity Treatment: Rationale And Study Design, Amanda E. Staiano, Alyssa M. Button, Alison Baker, Robbie Beyl, Anne Marie Conn, Angela Lima, Jeanne Lindros, Robert L. Newton, Richard I. Stein, R. Robinson Welch, Stephen Cook, Denise E. Wilfley

Population and Public Health Science Faculty Publications

Background: Family-based behavioral treatment (FBT) is an effective intensive health behavior and lifestyle treatment for obesity reduction in children and adolescents, but families have limited access. The purpose of this randomized, pragmatic, comparative effectiveness trial was to examine changes in child relative weight in a 12-month, enhanced standard of care (eSOC) intervention combined with FBT (eSOC+FBT) vs. eSOC alone. Methods: Children aged 6 to 15 years with obesity, and their primary caregiver, were recruited from primary care clinics. Families were randomized 1:1 to eSOC, a staged approach led by the primary care provider that gradually intensified dependent on a child's …

Artifactual Orthologs And The Need For Diligent Data Exploration In Complex Phylogenomic Datasets: A Museomic Case Study From The Andean Flora, Laura A. Frost, Ana M. Bedoya, Laura P. Lagomarsino

Faculty Publications

The Andes mountains of western South America are a globally important biodiversity hotspot, yet there is a paucity of resolved phylogenies for plant clades from this region. Filling an important gap in our understanding of the World's richest flora, we present the first phylogeny of Freziera (Pentaphylacaceae), an Andean-centered, cloud forest radiation. Our dataset was obtained via hybrid-enriched target sequence capture of Angiosperms353 universal loci for 50 of the ca. 75 spp., obtained almost entirely from herbarium specimens. We identify high phylogenomic complexity in Freziera, including the presence of data artifacts. Via by-eye observation of gene trees, detailed examination of …

Effects Of Teosinte Flour (Dioon Mejiae) On Selected Physicochemical Characteristics And Consumer Perceptions Of Gluten-Free Cocoa Cookies Formulated With Mung Bean (Vigna Radiata) Flour, Carlos José Rivera, Ricardo S. Aleman, Jorge Ortega, Andrea Muela, Jhunior Marcia, Joan King, Witoon Prinyawiwatkul

Faculty Publications

Dioon mejiae, or teosinte, is a living fossil tree discovered in Olancho, Honduras, whose seeds have a desirable nutritional profile that can provide health benefits. As a result, the objective of this study was to evaluate the effects of teosinte flour obtained from seeds on selected physicochemical characteristics and consumer perceptions of gluten-free cocoa cookies formulated with mung bean (Vigna radiata) flour. Gluten-free cocoa cookies were prepared with different levels of teosinte flour (0%, 70%, 80%, 90%, and 100% by weight of mung bean flour) in substitution of mung bean flour. The cookies were evaluated for texture hardness, color (L*, …

Gendered Perceptions And Socio-Economic And Spatial Determinants Of Fear Of Crime: An Empirical Analysis In Szczecin, Poland, Natalia Sypion, Arkadiusz Kołodziej, Michael Leitner, Marek Dutkowski

Faculty Publications

The study of the fear of crime phenomenon provides a socially and politically important research question. Many studies show that gender differentiates the fear of crime, which is why we examine this phenomenon in a spatial perspective. The female versus male perspective of feelings of safety in residential areas were significantly different. The research was carried out using the CAWI technique in the city of Szczecin, in Poland (n=346). The research also examined which factors influenced the fear of crime the most: darkness, socio-economic characteristics, type of violations, number of registered crimes, or the assessment of police work. The research …

Synergnet: A Graph Neural Network Model To Predict Anticancer Drug Synergy, Mengmeng Liu, Gopal Srivastava, J. Ramanujam, Michal Brylinski

Faculty Publications

Drug combination therapy shows promise in cancer treatment by addressing drug resistance, reducing toxicity, and enhancing therapeutic efficacy. However, the intricate and dynamic nature of biological systems makes identifying potential synergistic drugs a costly and time-consuming endeavor. To facilitate the development of combination therapy, techniques employing artificial intelligence have emerged as a transformative solution, providing a sophisticated avenue for advancing existing therapeutic approaches. In this study, we developed SynerGNet, a graph neural network model designed to accurately predict the synergistic effect of drug pairs against cancer cell lines. SynerGNet utilizes cancer-specific featured graphs created by integrating heterogeneous biological features into …

A Simplified Model For The Study Of Film-Boiling Droplet Motion On Microscale Ratchets, Sheldon Wang, Jeong Tae Ok, Sunggook Park, Mahmoud Elsharafi, Yu Guo

Faculty Publications

In this work, we explore a simplified model based on both analytical and computational methods for the study of film-boiling droplet motion on microscale ratchets. We consider a specific ratchet design with the length periods and depth of ratchets much smaller than the size of the droplet. We conclude based on our modeling that for the ratchet configuration considered in this paper, the conduction within the vapor film is the dominant means of heat transfer in comparison with convection and radiation. Furthermore, we demonstrate a more manageable two-dimensional model in which analytical approaches coupled with computational approaches yield reasonably accurate …

Producing Digital Reflections Of Reality Through Intercultural Filmmaking And Multisensory Engagement, Trai Thomas

LSU Doctoral Dissertations

This thesis analyzes the author’s production of three intercultural, multisensory films situated in New Orleans, encompassing elements both narrative and documentary genres. Intercultural cinema exists in a setting where people of different cultural backgrounds live together in power-inflicted spaces of diaspora, colonialism, and cultural apartheid and the development of the story is centered around exoticism, fetishization, and fascination with the other (Marks 2007, 1). Multisensory media primarily engages through visual perception and auditory input, which create cultural knowledge stored as long-term memory files in the brain (Marks 2007).