Digital Commons Network^™

Lawmaker Communication On Twitter By Race And Gender Of Lawmaker, Gabriel Olivier

Honors Capstones

No abstract provided.

Spring 2021 Catalog, Lsu Press

LSU Press Seasonal Catalogs

No abstract provided.

Effects Of Cryopreservation, Immunophenotype And Sex On Multipotentiality, Cell Proliferation And Gene Expression In Feline Adipose-Derived Stromal Cells, Maia Williams

Honors Capstones

No abstract provided.

Jazz Art: Flow Psychology And The Individual Creative Process, Isabelle Zoch

Honors Capstones

No abstract provided.

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.

Stakeholder’S Risk Perceptions Ofwild Pigs: Is There A Gender Difference?, Maria Bampasidou, Michael D. Kaller, Shaun M. Tanger

Faculty Publications

Substantial literature indicates that genders differ in terms of risk perception and values regarding wildlife management. Lack of equal stakeholder representation is also documented, which can also impact the effectiveness of human-wildlife conflict resolution interventions and education and outreach efforts. This paper investigates gender differences in perceptions about risks and potential adverse impacts on production, health, environment, safety, and population management posed by wild pigs. A survey was used to collect data from a random sample of adult residents (N = 1221) in Louisiana. We analyzed responses from 226 female and 832 male producers. We observed differences in how these …

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 …

Temperature Dependence Of Density And Viscosity Of Biobutanol-Gasoline Blends, Daniel Trost, Adam Polcar, Dorin Boldor, Divine Bup Nde, Artur Wolak, Vojtĕch Kumbár

Faculty Publications

Butanol seems to be an eligible fuel for compensating for the increasing fuel consumption. Biobutanol could be produced from local sources in the place of use. Its properties show similar results to gasoline, so biobutanol could be added as a biocomponent into fuels. Important properties, in the case of blending biobutanol into gasoline, are its fluid properties and their dependence on the temperature. Therefore, in this paper, the volumetric mass density and viscosity of the selected ratios between biobutanol and gasoline (0, 5, 10, 85, 100 vol.%) were tested over the temperature range from -10 °C up to 40 °C. …

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 …

"The Face Of The Agency": Interviews With Death Investigators In South Louisiana, Natalie H. King

LSU Master's Theses

According to the American Board of Medicolegal Death Investigators, “the role of the medicolegal death investigator is to investigate any death that falls under the jurisdiction of the medical examiner or coroner, including all suspicious, violent, unexplained and unexpected deaths” (American Board of Medicolegal Death Investigators [ABMDI], n.d.). As such, a death investigator has a job that is highly intense and stressful at a level similar to that of doctors, nurses, emergency medical technicians (EMTs), and firefighters. The majority of the literature written about death investigators focuses on procedural issues, while there seemingly is a lack of literature focused on …

The Career Transitions Of High-Profile Athletes: Role Engulfment, Psychological Well-Being, And Human Actualization, Maya Hughes

Honors Capstones

No abstract provided.

La Variación Sociofonológica De /Tʃ/ En Chihuahua, México, Latasha L. Valenzuela-Hernandez

LSU Master's Theses

This thesis shows us the phonological variation of the pronunciation of [tʃ] in the vernacular Spanish of Chihuahua, Mexico, which variably converts into a different pronunciation, the variant [ʃ], through the process of lenition. Although this phenomenon is observed in various countries such as Spain, Panama, Venezuela, and the United States, it remained understudied in the sociolinguistic field until now. Therefore, this investigation contributes reliable information of the psycholinguistic, phonological, and geo-linguistic characteristics that are pertinent to the production of the fricative [ʃ]. The investigation’s methodology employs semi-directed interviews with a socially stratified corpus of thirty-two speakers from Chihuahua, Mexico. …

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 …

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 …

A Critical Examination Of Media Images Of The Civil Rights Movement And Their Role In Shaping Collective Memories Among Northern White Audiences, Martha Ramirez

LSU Master's Theses

Collective memory theory has been used to study a wide array of phenomena, including the media’s role in shaping collective memories of pivotal and influential events throughout society. Often when lacking direct contact and engagement, the media may shape the collective memories of audiences. As such, the current study examines prominent images presented in the media and the potential role each could have contributed to the collective memory of the 1960’s Civil Rights Movement. More specifically, this study analyzes how collective memories, which are arguably influenced by the mass media, create memories for audiences that lack direct engagement (e.g., participating …

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 …

Gold-Semiconductor Photocatalysts For Water Treatment Under Visible And Ultraviolet Light, Daniel Willis

LSU Doctoral Dissertations

Water scarcity threatens the lives of millions of people worldwide. It is imperative to improve the energy efficiency and affordability of water treatment methods to avoid a looming water-energy crisis. To meet this challenge, I have pursued research on the use of sunlight—our most reliable and abundant source of energy—to drive water treatment through photocatalysis. I explored the literature and found gold-semiconductor materials to hold promise for harvesting sunlight and catalyzing the breakdown of waterborne contaminants. Initially, I designed a novel optical cavity with gold (Au) nanoparticles on a zinc oxide / titania (TiO₂) / aluminum film stack …

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 …

Hindsight, Haley Elizabeth Moore

LSU Master's Theses

“Time travel is theoretically impossible, but I wouldn't want to give it up as a plot gimmick.”—Isaac Asimov

“Of all the concepts in Speculative Fiction, Time Travel is probably the one that, over time, has provided us with the most possibilities for storytelling, and therefore the one that has been (clocked as having been) exploited the most.”—TVtropes.org

Hindsight is a one-hour long show with an eight-episode arc per season. It is a story of authenticity and gimmicks, privilege and disadvantage, mediocrity and exceptionalism. These are all pretty big concepts, and yeah, we look at them on a macrocosmic scale, but …

Characterization Of Memory T-Lymphocyte Subsets In Dogs, Annie Beth Bauman

LSU Master's Theses

A more complete understanding of canine T-cell immunity is necessary for improving diagnostic and therapeutic approaches to canine diseases, developing cell-based canine immunotherapeutics, and evaluating dogs as large mammal models for comparative immunology research. Canine immunological studies are limited by the lack of established phenotypic markers identifying diverse differentiation states in canine T-cells. Differential expression of CD45RA (indicating antigen experience) and CD62L (indicating lymph node homing capability), shows promise as a tool to delineate canine naïve (TN), central memory (TCM), effector memory (TEM), and terminal effector memory (TEMRA) T-cells. The aim of this study was to characterize canine memory T-cell …

Methods For Temporary Fracture Isolation, Arash Dahi Taleghani, Guoqiang Li

College of Engineering Patents

Methods for temporary fracture isolation are provided. An existing fracture is treated with a chemical diverter. The chemical diverter is exposed to conditions causing it to expand, plugging the fracture. A new fracture can be created through the application of pressure and fluid, without disrupting the plugged fracture. The chemical diverter can then be removed through biodegradation or the application of a solvent to reopen the first fracture.

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 …

Resource And Energy Recovery From Wastewater Using Advanced Bioelectrochemical Systems, Sidan Lu

LSU Doctoral Dissertations

Water pollution and energy depletion are two critical issues in the world that limit the sustainable development of human society. In this study, several advanced (photo) bioelectrochemical systems (BESs) were proposed for effective energy (electricity and H₂) and nutrients (N and P) recovery from wastewater, solar energy, seawater, and river water. The first study demonstrated high effectiveness of a novel resource-recovery microbial fuel cell (RRMFC) for wastewater treatment and nutrient recovery from synthetic urine-containing wastewater. Over one cycle (∼3 days), 99% of urea, 97% of COD, 99% of histidine, 91% of creatinine, 99% of sodium acetate, 98% of …

A Systematic Multiscale Investigation Of Nanoparticle-Assisted Co2 Enhanced Oil Recovery (Eor) Process For Shale Oil Reservoirs, Dayo A. Afekare

LSU Doctoral Dissertations

Shale oil reservoirs are prolific on the short term due to hydraulic fracturing and horizontal drilling but experience significant production decline, leading to poor ultimate recovery and leaving billions of barrels of oil buried in the ground. In this study, a systematic multi-scale investigation of an enhanced oil recovery (EOR) process using relatively inexpensive silicon dioxide nanoparticles and carbon dioxide for shale oil reservoirs was conducted. Using the Tuscaloosa Marine Shale (TMS) as a case study, aqueous dispersions of nanosilica in conjunction with CO₂ were investigated at nano-to-core scales. At the nanoscale, atomic force microscope was used to investigate …

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 …

Sound Glove: A Development In Collaboration, Emma E. Arends

LSU Master's Theses

Through design and technical work, the collaboration between the areas of Sound and Costume Design have been minimal. When these areas interact, it is usually for the small notes, like the shoes are too loud, or the jewelry is too much. However, in the following chapters I will propose a way to deepen the collaborative relationship between Sound and Costume through a prototype named the Sound Glove.The Sound Glove has been developed through researching previous products, researching for materials, constructing a budget, developing applications of the Sound glove and then creating a prototype. With these steps, the following chapters will …

Experienced And Inexperienced Listeners' Perception Of Childrens' /L/ Productions And Their Acoustic Correlates, Emily A. Coniglio

LSU Master's Theses

The phoneme /l/ is one of the highly misarticulated sounds for young children. Referrals for articulation are often based on a listener’s perception of the problem. The aim of the current study was to examine three listener groups’ perception of word-initial /l/ produced by young children to understand if level of experience with child speech impacts listeners’ perception on /l/. The three groups were separated based on their years of experience: speech-language pathologists with at least 10 years of experience (SLP group), graduate students in speech-language pathology (GS group), and naive listeners with no clinical phonetics experience (NL group). Specifically, …

Effects Of Microtubule Stabilizing And Recovery Agents On Vitrified Bovine Oocytes, Emily Dzekunskas

LSU Master's Theses

Oocyte vitrification, while beneficial for research and species conservation, has limited success due to cryoinjury to the meiotic spindle. This study aimed to evaluate treatments to improve meiotic spindle recovery after vitrification by treating bovine oocytes with either a microtubule stabilizing agent, or a microtubule recovery agent. In the first two experiments, Taxol and epothilone B were used to treat bovine oocytes before vitrification. Both compounds have microtubule stabilizing properties and are known antimitotic compounds commonly used in cancer treatment. Oocytes were incubated with one of the microtubule stabilizing agents for 15 minutes before vitrification at one of three concentrations …

Establishing And Validating Methods To Assess The Influence Of Exercise On Circulating Exosome Profiles In Sedentary Older Adults, Heather Quiriarte

LSU Master's Theses

Aging is associated with progressing cellular structural and functional changes, and sedentary behavior can exacerbate these hallmarks of aging. Routine exercise is known to have beneficial effects on physiological systems, but the exact molecular mechanisms behind the health benefits are unclear. Emerging evidence suggests extracellular vesicles called exosomes are involved in the intercommunication between cells and organs following exercise by delivering their cargo such as proteins and miRNAs. miRNA profiles in older adults following acute and chronic exercise need further exploration. Specifically, the effects of regular low-intensity physical activity (LPA) breaks in sedentary time on proteins and miRNA packaged in …