Digital Commons Network^™

Northeast- Summer 2019, Lsu Agcenter

Horticulture Hints

No abstract provided.

Central- Summer 2019, Lsu Agcenter

Horticulture Hints

No abstract provided.

Low-Intensity Exercise Induces Acute Shifts In Liver And Skeletal Muscle Substrate Metabolism But Not Chronic Adaptations In Tissue Oxidative Capacity, S E. Fuller, T Y. Huang, J Simon, H M. Batdorf, S E. Fuller, M C. Scott, C M. Waskom, J M. Brown, S J. Burke, J J. Collier, R C. Noland

Faculty Publications

Adaptations in hepatic and skeletal muscle substrate metabolism following acute and chronic (6 wk; 5 days/wk; 1 h/day) low-intensity treadmill exercise were tested in healthy male C57BL/6J mice. Low-intensity exercise maximizes lipid utilization; therefore, we hypothesized pathways involved in lipid metabolism would be most robustly affected. Acute exercise nearly depleted liver glycogen immediately postexercise (0 h), whereas hepatic triglyceride (TAG) stores increased in the early stages after exercise (0-3 h). Also, hepatic peroxisome proliferator-activated receptor-gamma coactivator-1 alpha (PGC-1 alpha) gene expression and fat oxidation (mitochondrial and peroxisomal) increased immediately postexercise (0 h), whereas carbohydrate and amino acid oxidation in liver …

Effects Of Virus Infection And Volatiles On Aphid Virus Vector Behavior On Sweetpotato, John Lawrence Dryburgh

LSU Doctoral Dissertations

Sweetpotato is affected by a wide variety of viruses worldwide, which can cause yield losses of up to 90%. Many of these viruses are transmitted by aphids in a non-persistent manner. Non-persistent viruses are acquired and transmitted within minutes, and thus conventional control, such as insecticides, are ineffective. Altering aphid movement and feeding behavior may affect the rate of virus transmission. One potential method to alter aphid behavior is volatile organic compounds (VOC), including volatiles emitted by virus infected plants, plant hormones, and commercial control agents. Aphid movement near sweetpotato fields was monitored to determine trends throughout the growing season. …

In Vitro And In Vivo (Mouse Model) Investigation Of The Efficacy Of Probiotic Bacteria Lactobacillus Casei And Lactobacillus Rhamnosus Incorporated In Tomato Juice, Bennett Atta Dzandu

LSU Doctoral Dissertations

Fruit and vegetable production in Ghana were estimated at 371,811 tons in 2017 with tomatoes ranked among the top four most cultivated vegetables. The majority of the production goes to waste due to spoilage and lack of processing. Probiotics have recently gained much attention owing to claims about their potential health benefits. However, the inability of certain probiotics to survive gastric conditions remain a potential setback. Tomatoes can be processed into value added products including those fortified with probiotics. Such value-added products can be used as protectant for the delivery of probiotics to improve gut health. The objective of this …

Iron-Sulfur Cluster Biosynthesis In Methanogens, Cuiping Zhao

LSU Doctoral Dissertations

Methanogens live in a syntrophic consortium with bacteria, taking advantage of the metabolic abilities of their syntrophic partners to overcome energetic barriers and break down compounds that they cannot digest by themselves. Interspecies electron transfer, which is a major type of microbial communication in syntrophic processes, improves methanogenesis and anaerobic oxidization of methane (AOM) processes involved in syntrophic consortia. These processes have a significant impact on the global carbon cycle. Most of the essential enzymes involved in methanogenesis are iron-sulfur proteins. Iron-sulfur clusters are one of the oldest and most versatile cofactors present in all domains of life. To date, …

Large-Scale Data Analysis And Deep Learning Using Distributed Cyberinfrastructures And High Performance Computing, Richard Dodge Platania

LSU Doctoral Dissertations

Data in many research fields continues to grow in both size and complexity. For instance, recent technological advances have caused an increased throughput in data in various biological-related endeavors, such as DNA sequencing, molecular simulations, and medical imaging. In addition, the variance in the types of data (textual, signal, image, etc.) adds an additional complexity in analyzing the data. As such, there is a need for uniquely developed applications that cater towards the type of data. Several considerations must be made when attempting to create a tool for a particular dataset. First, we must consider the type of algorithm required …

Characterization Of The Integrated Signaling Network Of Burkholderia Glumae For The Regulation Of Virulence-Related Function In The Bacterial Pathogenesis Of Rice Plants, Tiago De Paula Lelis

LSU Doctoral Dissertations

Bacterial panicle blight of rice (BPB) caused by Burkholderia glumaeis a major bacterial disease of rice in many rice-producing areas worldwide. Managing the disease is still very difficult due to the lack of effective methods. B. glumaestrains show phenotypic and genomic variations; however, little variation was detected in the known virulence-related genes. In the present study, the complete genome of B. glumae257sh-1, a natural avirulent strain, was sequenced and analyzed. Several spontaneous mutations in the regulatory genes of these avirulent strains were identified. Presumably, the accumulation of these mutations can have a negative effect on the normal …

Increasing The Inclusion Of Women Composers In The Wind Band Repertoire: Pale As Centuries By Sarah Kirkland Snider, Clifton Gerod Croomes

LSU Doctoral Dissertations

Women composers are underrepresented in the wind band medium. This study aims to determine the major factors for the disparity between men and women composers. I’ve transcribed a contemporary chamber music piece, Pale As Centuries by Sarah Kirkland Snider, for the wind band. Expanding on Snider’s existing work for chamber ensemble I will explore her compositional style and reinterpret the piece using the colors of the wind band.

A review of the literature focuses on trends within western music in the United States over the last century and establishes a documented history of institutionalized marginalization. In an interview with Snider …

The Role Of Atp-Sensitive Inward Rectifier Potassium Channels In The Regulation Of Reactive Oxygen Species In The Western Honey Bee, Apis Mellifera L., Christopher J. Fellows

LSU Master's Theses

Colonies of managed honey bees are annually being lost at an unsustainable rate, partly due to reduced immunocompetence that leads to acute viral outbreaks and mortality. To aid in restoring honey bee health despite the myriad of environmental stressors, this thesis focuses on identifying novel physiological pathways that can mitigate virus-mediated mortality through increased immune function. Previous work has demonstrated that a family of potassium ion channels, termed K_ATP channels, mediate the survival of honey bees during infection from a model virus, suggesting K_ATP channels may drive antiviral immunity. Interestingly, these channels have been linked to the regulation …

An Examination Of The Effects Of Post-Identification Feedback On Jurors, Daniella Cash

LSU Doctoral Dissertations

Post-identification feedback (PIF) occurs when witnesses are given feedback following their identification choices. This feedback has been shown to alter witnesses’ retrospective judgments regarding their witnessing experience (e.g., they are more confident that they made a correct identification). PIF effects are robust; they impact witnesses’ memory of their experience, and also appear to act as confirmation to jurors who are asked to assess witness reliability. A current recommendation for eyewitness procedures is that identifications should be recorded and shown to jurors at trial, but this might be harmful if jurors are also negatively impacted by this suggestive feedback. The goal …

High Protein Rice Flour In The Development Of Gluten-Free Muffins And Bread, Gabriella M. Paz

LSU Master's Theses

Gluten sensitivities and intolerance disorders such as Celiac disease are being diagnosed more every day which has opened a huge market for gluten-free foods that is expected to reach nearly $7.6 billion by 2020. About 30% of the US population says they are trying to cut-down on or avoid gluten completely, with only 7% doing so for medical reasons. Although there are gluten-free alternatives available to use in cooking and baking, simple substitution of these flours for wheat does not produce acceptable texture characteristics. Gluten-free baked goods suffer from being low in nutritional value such as protein and fiber content …

Fluorescence Hplc Analysis Of The In-Vivo Activity Of Glucosylceramide Synthase, Kartik R. Roy, Sachin K. Khiste, Zhijun Liu, Yong Yu Liu

Faculty Publications

Almost all functions of cells or organs rely on the activities of cellular enzymes. Indeed, the in-vivo activities that directly represent the cellular effects of enzymes in live organs are critical importance to appreciate the roles enzymes play in modulating physiological or pathological processes, although assessments of such in-vivo enzyme activity are more difficult than typical test-tube assays. Recently, we, for the first time, developed a direct and easy-handling method for HPLC analyzing the in-vivo activity of glucosylceramide synthase (GCS). GCS that converts ceramide into glucosylceramide is a limiting-enzyme in the syntheses of glycosphingolipids and is one cause of cancer …

Design Of Metamaterials For Optics, Abiti Adili

LSU Doctoral Dissertations

First part of this dissertation studies the problem of designing metamaterial crystals with double negative effective properties for applications in optics by investigating the conditions necessary for generating novel dispersion properties in a metamaterial crystal with subwavelength microstructure. This provides novel optical properties created through local resonances tied to the geometry of the media in subwavelength regime.

In the second part, this dissertation studies the representation formula used to describe band structures in photonic crystals with plasmonic inclusions. By using layer potential techniques, a magnetic dipole operator describing the tangential component of the electrical field generated by magnetic distribution is …

Chronic Nucleoside Reverse Transcriptase Inhibitors Disrupt Mitochondrial Homeostasis And Promote Premature Endothelial Senescence, Yi-Fan Chen

LSU Doctoral Dissertations

Combination antiretroviral therapy (cART) has been hugely successful in reducing the mortality associated with human immunodeficiency virus (HIV) infection, resulting in a growing population of people living with HIV (PLWH). Since PLWH now have a longer life expectancy, chronic comorbidities have become the focus of the clinical management of HIV. For example, cardiovascular complications are now one of the most prevalent causes of death in PLWH. Nucleoside reverse transcriptase inhibitors (NRTIs) are the backbone of cART, and two NRTIs are typically used in combination with one drug from another drug class, such as a non-NRTI, a protease inhibitor or an …

Divergent Transcriptional Regulation Of Suppressors Of Cytokine Signaling Genes In Adipocytes, Paula Mota De Sa

LSU Doctoral Dissertations

The Janus Kinase - Signal Transducer and Activator of Transcription (JAK-STAT) signaling pathway transduces several signals crucial for development and homeostasis. Suppressors of cytokine signaling (SOCS) proteins control JAK-STAT signaling via a negative feedback loop. The transcription factor STAT5 is known to play a significant role in fat cell development and function, and several studies suggest that acetylation may affect STAT5 transcriptional activity. To test this hypothesis, we treated 3T3-L1 adipocytes with growth hormone (GH) to activate STAT5 in the presence or absence of histone deacetylase (HDAC) inhibitors. STAT5 acetylation levels were low in adipocytes and mostly unchanged by the …

Intimate Fictions: The Rhetorical Strategies Of Obscene Violence In Four Novels, Steven Monk

LSU Doctoral Dissertations

Richard Wright, Marlon James, Cormac McCarthy and Ken Levine are each celebrated in their respective fields but notorious for their obscene depictions of violence. Contrary to trauma theorists’ claims that violence shatters language and cannot be spoken, these writers speak violence in its most disturbing forms: torn eyeballs, dead infants, forced fecal consumption and mechanized rape. I argue that obscene violence, much like obscene language, creates a space of intimacy in which transgressive, subversive and oppositional thoughts may be spoken. By alienating their texts from the larger reading public, these writers entice a smaller group of sympathetic readers to develop …

Neurostimulator With Waveforms Inspired By Nature For Wearable Electro-Acupuncture, Jose Aquiles Parodi Amaya

LSU Doctoral Dissertations

The work presented here has 3 goals: establish the need for novel neurostimulation waveform solutions through a literature review, develop a neurostimulation pulse generator, and verify the operation of the device for neurostimulation applications.

The literature review discusses the importance of stimulation waveforms on the outcomes of neurostimulation, and proposes new directions for neurostimulation research that would help in improving the reproducibility and comparability between studies.

The pulse generator circuit is then described that generates signals inspired by the shape of excitatory or inhibitory post-synaptic potentials (EPSP, IPSP). The circuit analytical equations are presented, and the effects of the circuit …

Capturing Contingency: Experimental Documentary In The Wake Of Direct Cinema, Dustin Reed Zemel

LSU Doctoral Dissertations

This dissertation examines experimental works in the late 1960s utilizing technologies and techniques connected with direct cinema and cinema vérité models of documentary filming. Focusing on three experimental filmmakers, I show how films by Jonas Mekas, Robert Fulton and William Greaves eschew the austere style associated with observational realism of direct cinema in favor of more ostentatious experimental assembly practices which highlight the role of the filmmaker as artist. I argue for a relational model of assessment in which documentary film’s qualitative renderings of environment become important determinants of documentary integrity and efficacy. With separate chapters focusing on works by …

Habitat Preference Modulates Transoceanic Dispersal In A Terrestrial Vertebrate, Mozes P.K. Blom, Nicholas J. Matzke, Jason G. Bragg, Evy Arida, Christopher C. Austin, Adam R. Backlin, Miguel A. Carretero, Robert N. Fisher, Frank Glaw, Stacie A. Hathaway, Djoko T. Iskandar, Jimmy A. Mcguire, Benjamin R. Karin, Sean B. Reilly, Eric N. Rittmeyer, Sara Rocha, Mickaël Sanchez, Alexander L. Stubbs, Miguel Vences, Craig Moritz

Faculty Publications

© 2019 The Author(s) Published by the Royal Society. All rights reserved. The importance of long-distance dispersal (LDD) in shaping geographical distributions has been debated since the nineteenth century. In terrestrial vertebrates, LDD events across large water bodies are considered highly improbable, but organismal traits affecting dispersal capacity are generally not taken into account. Here, we focus on a recent lizard radiation and combine a summary-coalescent species tree based on 1225 exons with a probabilistic model that links dispersal capacity to an evolving trait, to investigate whether ecological specialization has influenced the probability of trans-oceanic dispersal. Cryptoblepharus species that occur …

So Long, Sinkhole City!, Heather Molecke

LSU Master's Theses

Abstract

A sinkhole is land that appears structurally sound, but underneath its surface lacks foundation. If there is not enough support for the land above, a sudden collapse of the surface happens. Sinkhole City is a conceptual three-part installation that metaphorically conveys experiences of childhood sexual abuse, incarceration in adolescent psychiatric hospitals, and young adult drug addiction. This work illuminates and explores the relationship between childhood trauma and drug addiction.

Sinkhole City takes the viewer on a journey through semi-autobiographical life passages. In this three-part installation assemblage I am confronting my own sense of past shame, the emotional roller coaster …

Evaluation Of Post-Harvest Procedures For Quality Enhancement In The Louisiana Commercial Shrimp Industry, Nicholas Alan Haddad

LSU Master's Theses

The Louisiana commercial shrimp fishery has faced numerous challenges and is declining at an alarming rate. The opportunity may exist to add value to the industry by creating a superior product through optimal operating procedures. Post-harvest processes of plate freezing were analyzed to develop a high-quality shrimp product capable of fostering economic growth for fishermen. Quantifiable data was collected via overnight trips onboard plate freezing boats and at plate freezing docks. Sulfite-free melanosis prevention testing occurred by exploring the use of 4-hexylresorcinol treatments, in combination with vacuum packaging and modified atmosphere packaging, to delay the onset of black spot. Physical …

Assessing Louisiana State University College Of Agriculture Faculty Members' Cultural Intelligence And Kenyan Workshop Participants' Knowledge And Attitude Towards International Development Projects, Cristina Cossich

LSU Doctoral Dissertations

The main objective of this dissertation was to assess Louisiana State University College of Agriculture Faculty Members' Cultural Intelligence and Kenyan Workshop Participants' Knowledge and Attitude towards International Development Projects. The study examines key aspects that contribute to the implementation of international development projects: describing the landscape of what is known about international development projects in Kenya; assessing perceptions of faculty members of a southern United States land-grant university who are in charge of the development and implementation of international development projects; and evaluation of program impacts on selected local participants of a project in Kenya.

The overall findings of …

Teachers As Change Agents: An Investigation Into The Literary Practices Of Effective Tier 2 Charter School Teachers In South Louisiana, Earlisha Jenkins Whitfield

LSU Doctoral Dissertations

A Southern Louisiana charter school is in the initial phases of a Response To Intervention (RTI). General education classroom teachers are responsible for all Tier 1 and 2 instruction that included interventions in Tier 2. However, many teachers were unsure about the implementation, of RTI and had negative experiences with RTI, describing the process as frustrating and overwhelming. This case study examines teachers that have been effective in the process as evidenced by an increase in in reading levels and student interest. The research explores the teachers’ perceptions, experience, and knowledge of the current implementation of RTI. This qualitative research …

Living Shorelines As Alternative Methods Of Shoreline Protection, Hunter Shows

LSU Master's Theses

Louisiana’s marshes and coastal estuaries are losing habitat at an alarming rate. High rates of sea level rise coupled with coastal subsidence are turning once thriving marsh land into open water. The sediment starved Mississippi River Delta is drowning, making families homes, property, and livelihoods increasingly vulnerable every year. Significant funding is being allocated for projects to offset the increasing erosion including but not limited to diversions, marsh creation, ridge restoration, and shoreline protection projects.

Living shorelines, for the sake of this study, can be defined as a form of shoreline protection which helps shoreline stabilization and erosion reduction while …

Interpreting Reality In The Anthropocene, Jake Philip Hamill

LSU Master's Theses

In this paper, I would like to propose that abundant beautification techniques in contemporary nature documentaries are counterproductive when attempting to address humans’ impact on our planet. By utilizing technology there could be a new way to educate ourselves about the Anthropocene on platforms such as Google Earth where one can view nature, statistics, and art by location. With limited data, learning about our effects on nature in its entirety is close to impossible but art can allow us to try and reveal new hidden connections.

A Cup Of Breast Milk And A Warm Chair, Carlie A. Salomons

LSU Master's Theses

The work in the exhibition A Cup Of Breast Milk and A Warm Chair is a physical and ephemeral connection between mothers and daughters. It explores my personal connection to my maternal lineage. This connection is looked through the lens of common generational roles of women, ancestral inheritance and my childhood memories. I consider what it means to inherit and to be remembered outside of the standard androcentric genealogical structure. My inheritance from my maternal lineage comes in the form of women’s work, or handcrafts such as: crochet, knitting and sewing. In creating this body of work, I blend the …

Reproductive Parameters And Methodologies For The Culture Of Golden Topminnows (Fundulus Chrysotus) And Bluenose Shiners (Pteronotropis Welaka), Jacob A. Fetterman

LSU Master's Theses

The global ornamental fish trade has expanded over the past 20 years, requiring captive rearing methods to be improved or developed for species of interest. Aquaculture of desirable species is preferable over wild harvest to conserve natural habitats and biodiversity. This thesis focused on improving culture methods for Golden Topminnows Fundulus chrysotus and developing culture methods for Bluenose Shiners Pteronotropis welaka, both native fishes of the southeastern United States with ornamental demand. A combination of reproductive metric analyses, examination of historical collections, and captive spawning trials were employed to target specific objectives for each species. In female Golden Topminnows, …

Léon-Jean-Joseph Dubois, Antiquarian, Anna E. Dow

LSU Master's Theses

This thesis examines the life of Léon-Jean-Joseph Dubois (1780-1846), a French engraver, antiquarian, conservator, and restorer of antiquities. Dubois lived in Paris during the late eighteenth and early nineteenth centuries, in an era when Ancient Egyptian art and history became very popular. His life was overshadowed by the career of his friend Jean-François Champollion, the “Father” of Egyptology, who laid the foundations for the deciphering of Egyptian hieroglyphics in 1822. This thesis is the first to study Dubois, and the focus of this study will be on his life, his publications, his art, his relationships with other antiquarians, his museum …

Sexually Dimorphic Oxytocin Receptorexpressing Neurons In The Preoptic Area Of The Mouse Brain, Kaustubh Sharma, Ryan Leblanc, Masudul Haque, Katsuhiko Nishimori, Madigan M. Reid, Ryoichi Teruyama

Faculty Publications

© 2019 Sharma et al. Oxytocin is involved in the regulation of social behaviors including parental behaviors in a variety of species. Oxytocin triggers social behaviors by binding to oxytocin receptors (OXTRs) in various parts of the brain. OXTRs are present in the preoptic area (POA) where hormone-sensitive sexually dimorphic nuclei exist. The present study was conducted to examine whether sex differences exist in the distribution of neurons expressing OXTRs in the POA. Using OXTR-Venus (an enhanced variant of yellow fluorescent protein) mice, the distribution of OXTR-Venus cells in the POA was compared between sexes. The total number of OXTR-Venus …