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Effects Of Ingested Essential Oils And Propolis Extracts On Honey Bee (Hymenoptera: Apidae) Health And Gut Microbiota, Allyson Martin Ewert, Michael Simone-Finstrom, Quentin Read, Claudia Husseneder, Vincent Ricigliano Nov 2023

Effects Of Ingested Essential Oils And Propolis Extracts On Honey Bee (Hymenoptera: Apidae) Health And Gut Microbiota, Allyson Martin Ewert, Michael Simone-Finstrom, Quentin Read, Claudia Husseneder, Vincent Ricigliano

Faculty Publications

Managed honey bee (Hymenoptera: Apidae: Apis mellifera Linnaeus) hives require frequent human inputs to maintain colony health and productivity. A variety of plant natural products (PNPs) are delivered via feeding to control diseases and reduce the use of synthetic chemical treatments. However, despite their prevalent use in beekeeping, there is limited information regarding the impact of ingested PNPs on bee health. Here, we tested the effects of different essential oils and propolis extracts on honey bee life span, nutrient assimilation, xenobiotic detoxification, and gut microbiota abundance. Brazilian propolis extract lengthened worker life span, while the other PNPs (Louisiana propolis extract, …

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Weight And Protozoa Number But Not Bacteria Diversity Are Associated With Successful Pair Formation Of Dealates In The Formosan Subterranean Termite, Coptotermes Formosanus, Junyan Chen, Garima Setia, Li Hsiang Lin, Qian Sun, Claudia Husseneder Nov 2023

Weight And Protozoa Number But Not Bacteria Diversity Are Associated With Successful Pair Formation Of Dealates In The Formosan Subterranean Termite, Coptotermes Formosanus, Junyan Chen, Garima Setia, Li Hsiang Lin, Qian Sun, Claudia Husseneder

Faculty Publications

New colonies of Formosan subterranean termites are founded by monogamous pairs. During swarming season, alates (winged reproductives) leave their parental colony. After swarming, they drop to the ground, shed their wings, and male and female dealates find suitable nesting sites where they mate and become kings and queens of new colonies. The first generation of offspring is entirely dependent on the nutritional resources of the founder pair consisting of the fat and protein reserves of the dealates and their microbiota, which include the cellulose-digesting protozoa and diverse bacteria. Since termite kings and queens can live for decades, mate for life …

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Community-Wide Correlations Between Species Richness, Abundance And Population Genomic Diversity In A Freshwater Biodiversity Hotspot, Jamie R. Bucholz, Garrett W. Hopper, Irene Sánchez González, Taylor E. Kelley, Colin R. Jackson, Ryan C. Garrick, Carla L. Atkinson, Jeffrey D. Lozier Nov 2023

Community-Wide Correlations Between Species Richness, Abundance And Population Genomic Diversity In A Freshwater Biodiversity Hotspot, Jamie R. Bucholz, Garrett W. Hopper, Irene Sánchez González, Taylor E. Kelley, Colin R. Jackson, Ryan C. Garrick, Carla L. Atkinson, Jeffrey D. Lozier

Faculty Publications

Understanding patterns of diversity across macro (e.g. species-level) and micro (e.g. molecular-level) scales can shed light on community function and stability by elucidating the abiotic and biotic drivers of diversity within ecological communities. We examined the relationships among taxonomic and genetic metrics of diversity in freshwater mussels (Bivalvia: Unionidae), an ecologically important and species-rich group in the southeastern United States. Using quantitative community surveys and reduced-representation genome sequencing across 22 sites in seven rivers and two river basins, we surveyed 68 mussel species and sequenced 23 of these species to characterize intrapopulation genetic variation. We tested for the presence of …

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Adipocyte Stat5 (Signal Transducer And Activator Of Transcription 5) Is Not Required For Glucocorticoid-Induced Metabolic Dysfunction, Innocence Harvey, Allison J. Richard, Tamra M. Mendoza, Jacqueline M. Stephens Nov 2023

Adipocyte Stat5 (Signal Transducer And Activator Of Transcription 5) Is Not Required For Glucocorticoid-Induced Metabolic Dysfunction, Innocence Harvey, Allison J. Richard, Tamra M. Mendoza, Jacqueline M. Stephens

Division of Basic Science Faculty Publications

Excess glucocorticoid (GC) signaling in adipose tissue is a key driver of insulin resistance and hepatic steatosis, but underlying mechanisms have not been fully elucidated. Signal transducer and activator of transcription 5 (STAT5) signaling in adipocytes has also been implicated in the progression of similar metabolic disturbances. Although STAT5 has been shown to interact with the glucocorticoid receptor (GR) in many cell types including adipocytes, the relevance of the STAT5/GR complex has not been investigated in adipocytes. Adult male and female adipocyte-specific STAT5 knockout (STAT5AKO) and floxed mice were given corticosterone (CORT) or vehicle in their drinking water for 1 …

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Omics-Driven Investigation Of The Biology Underlying Intrinsic Submaximal Working Capacity And Its Trainability, Monalisa Hota, Jacob L. Barber, Jonathan J. Ruiz-Ramie, Charles S. Schwartz, Do Thuy Uyen Ha Lam, Prashant Rao, Michael Y. Mi, Daniel H. Katz, Jeremy M. Robbins, Clary B. Clish, Robert E. Gerszten, Mark A. Sarzynski, Sujoy Ghosh, Claude Bouchard Nov 2023

Omics-Driven Investigation Of The Biology Underlying Intrinsic Submaximal Working Capacity And Its Trainability, Monalisa Hota, Jacob L. Barber, Jonathan J. Ruiz-Ramie, Charles S. Schwartz, Do Thuy Uyen Ha Lam, Prashant Rao, Michael Y. Mi, Daniel H. Katz, Jeremy M. Robbins, Clary B. Clish, Robert E. Gerszten, Mark A. Sarzynski, Sujoy Ghosh, Claude Bouchard

Division of Basic Science Faculty Publications

Submaximal exercise capacity is an indicator of cardiorespiratory fitness with clinical and public health implications. Submaximal exercise capacity and its response to exercise programs are characterized by heritability levels of about 40%. Using physical working capacity (power output) at a heart rate of 150 beats/min (PWC150) as an indicator of submaximal exercise capacity in subjects of the HERITAGE Family Study, we have undertaken multi-omics and in silico explorations of the underlying biology of PWC150 and its response to 20 wk of endurance training. Our goal was to illuminate the biological processes and identify panels of genes associated with human variability …

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Quantitative Trait Loci, Candidate Genes, And Breeding Lines To Improve Salt Tolerance At The Flowering And Seedling Stages In Rice, Rajat Pruthi, Sandeep Chapagain, Sapphire Coronejo, Lovepreet Singh, Prasant Kumar Subudhi Nov 2023

Quantitative Trait Loci, Candidate Genes, And Breeding Lines To Improve Salt Tolerance At The Flowering And Seedling Stages In Rice, Rajat Pruthi, Sandeep Chapagain, Sapphire Coronejo, Lovepreet Singh, Prasant Kumar Subudhi

Faculty Publications

Salinity is a major environmental constraint that limits growth and productivity of rice all over the world. Although rice plants are vulnerable to salt stress at both seedling and flowering stages, genetic dissection of salt tolerance at the flowering stage is challenging due to non-uniformity of stress application at the appropriate growth stage. The present study was conducted to identify quantitative trait loci (QTLs) and candidate genes associated with the flowering stage salt tolerance and compare with those associated with the seedling stage using a high-resolution genetic map. A population of advanced generation introgression lines with uniform flowering time was …

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Bariatric Surgery Alters Mitochondrial Function In Gut Mucosa, Robert C. Ross, Elizabeth C. Heintz, Elizabeth R.M. Zunica, R. Leigh Townsend, Amanda E. Spence, Philip R. Schauer, John P. Kirwan, Christopher L. Axelrod, Vance L. Albaugh Nov 2023

Bariatric Surgery Alters Mitochondrial Function In Gut Mucosa, Robert C. Ross, Elizabeth C. Heintz, Elizabeth R.M. Zunica, R. Leigh Townsend, Amanda E. Spence, Philip R. Schauer, John P. Kirwan, Christopher L. Axelrod, Vance L. Albaugh

Division of Basic Science Faculty Publications

Background: The obesity pandemic has worsened global disease burden, including type 2 diabetes, cardiovascular disease, and cancer. Metabolic/bariatric surgery (MBS) is the most effective and durable obesity treatment, but the mechanisms underlying its long-term weight loss efficacy remain unclear. MBS drives substrate oxidation that has been linked to improvements in metabolic function and improved glycemic control that are potentially mediated by mitochondria—a primary site of energy production. As such, augmentation of intestinal mitochondrial function may drive processes underlying the systemic metabolic benefits of MBS. Herein, we applied a highly sensitive technique to evaluate intestinal mitochondrial function ex vivo in a …

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Access, Interest, And Barriers To Incorporation Of Birth Doula Care In The United States, Amanda W. Mitchell, Joshua R. Sparks, Robbie A. Beyl, Abby D. Altazan, S. Ariel Barlow, Leanne M. Redman Nov 2023

Access, Interest, And Barriers To Incorporation Of Birth Doula Care In The United States, Amanda W. Mitchell, Joshua R. Sparks, Robbie A. Beyl, Abby D. Altazan, S. Ariel Barlow, Leanne M. Redman

Clinical Research Faculty Publications

Doula care improves maternal care, yet barriers exist to incorporating doula care. The purpose of this study was to evaluate interest and barriers to doula care. Overall, 508 women, 26–35 years of age (54.5%), White/Caucasian (89.8%), and married (88.6%), completed this study. Most reported ≥1 previous birth (97.6%). Respondents would “feel comfortable” (73.2%) and “more confident” (54.9%) with doula care at birth, and 57.9% reported their provider would be supportive of doula care. Only 39.0% expressed benefits to doula care during pregnancy compared to 72.6% at birth and 68.1% during postpartum. Most would hire a doula if health insurance covered …

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Circular-Swat For Deep Learning Based Diagnostic Classification Of Alzheimer's Disease: Application To Metabolome Data, Taeho Jo, Junpyo Kim, Paula Bice, Kevin Huynh, Tingting Wang, Matthias Arnold, Peter J. Meikle, Peter J. Meikle, Corey Giles, Rima Kaddurah-Daouk, Andrew J. Saykin, Kwangsik Nho, Alexandra Kueider-Paisley, P. Murali Doraiswamy, Colette Blach, Arthur Moseley, Will Thompson, Lisa St John-Williams, Siamak Mahmoudiandehkhordi, Jessica Tenenbaum, Kathleen Welsh-Balmer, Brenda Plassman, Shannon L. Risacher, Gabi Kastenmüller, Xianlin Han, Rebecca Baillie, Rob Knight, Pieter Dorrestein, James Brewer, Emeran Mayer, Jennifer Labus, Pierre Baldi, Arpana Gupta, Oliver Fiehn Nov 2023

Circular-Swat For Deep Learning Based Diagnostic Classification Of Alzheimer's Disease: Application To Metabolome Data, Taeho Jo, Junpyo Kim, Paula Bice, Kevin Huynh, Tingting Wang, Matthias Arnold, Peter J. Meikle, Peter J. Meikle, Corey Giles, Rima Kaddurah-Daouk, Andrew J. Saykin, Kwangsik Nho, Alexandra Kueider-Paisley, P. Murali Doraiswamy, Colette Blach, Arthur Moseley, Will Thompson, Lisa St John-Williams, Siamak Mahmoudiandehkhordi, Jessica Tenenbaum, Kathleen Welsh-Balmer, Brenda Plassman, Shannon L. Risacher, Gabi Kastenmüller, Xianlin Han, Rebecca Baillie, Rob Knight, Pieter Dorrestein, James Brewer, Emeran Mayer, Jennifer Labus, Pierre Baldi, Arpana Gupta, Oliver Fiehn

Clinical Research Faculty Publications

Background: Deep learning has shown potential in various scientific domains but faces challenges when applied to complex, high-dimensional multi-omics data. Alzheimer's Disease (AD) is a neurodegenerative disorder that lacks targeted therapeutic options. This study introduces the Circular-Sliding Window Association Test (c-SWAT) to improve the classification accuracy in predicting AD using serum-based metabolomics data, specifically lipidomics. Methods: The c-SWAT methodology builds upon the existing Sliding Window Association Test (SWAT) and utilizes a three-step approach: feature correlation analysis, feature selection, and classification. Data from 997 participants from the Alzheimer's Disease Neuroimaging Initiative (ADNI) served as the basis for model training and validation. …

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Expanding Non-Invasive Approaches For Fish-Health Monitoring: A Survey Of The Epidermal Mucous Metabolomes Of Phylogenetically Diverse Freshwater Fish Species, Drew R. Ekman, Marina G. Evich, Jonathan D. Mosley, Jon A. Doering, Kellie A. Fay, Gerald T. Ankley, Timothy W. Collette Nov 2023

Expanding Non-Invasive Approaches For Fish-Health Monitoring: A Survey Of The Epidermal Mucous Metabolomes Of Phylogenetically Diverse Freshwater Fish Species, Drew R. Ekman, Marina G. Evich, Jonathan D. Mosley, Jon A. Doering, Kellie A. Fay, Gerald T. Ankley, Timothy W. Collette

Faculty Publications

There is a pressing need for more-holistic approaches to fisheries assessments along with growing demand to reduce the health impacts of sample collections. Metabolomic tools enable the use of sample matrices that can be collected with minimal impact on the organism (e.g., blood, urine, and mucus) and provide high-throughput, untargeted biochemical information without the requirement of a sequenced genome. These qualities make metabolomics ideal for monitoring a wide range of fish species, particularly those under protected status. In the current study, we surveyed the relative abundances of 120 endogenous metabolites in epidermal mucus across eight freshwater fish species belonging to …

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Responses Of Phytoplankton Communities To The Effect Of Both River Plume And Coastal Upwelling, Zhuyin Tong, Lingqi Ma, Shujie Cai, Lei Wang, Wupeng Xiao, Bangqin Huang, Edward A. Laws Nov 2023

Responses Of Phytoplankton Communities To The Effect Of Both River Plume And Coastal Upwelling, Zhuyin Tong, Lingqi Ma, Shujie Cai, Lei Wang, Wupeng Xiao, Bangqin Huang, Edward A. Laws

Faculty Publications

River plumes and coastal upwelling systems are both nutrient-abundant habitats compared to the open ocean, and the mechanisms that structure the phytoplankton community when these occur together are unclear. In this study we investigated the dynamics and drivers of phytoplankton biomass and community composition in the Pearl River plume-coastal upwelling system on the northern South China Sea shelf during summer. We found that phytoplankton biomass was lower in the plume than in upwelled water. Diatoms were the only dominant group in the upwelled water. In contrast, diatoms and Synechococcus were co-dominant in the plume, and the negative correlation between the …

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Widespread Sympatry In A Species-Rich Clade Of Marine Fishes (Carangoidei), Jessica R. Glass, Richard C. Harrington, Peter F. Cowman, Brant C. Faircloth, Thomas J. Near Nov 2023

Widespread Sympatry In A Species-Rich Clade Of Marine Fishes (Carangoidei), Jessica R. Glass, Richard C. Harrington, Peter F. Cowman, Brant C. Faircloth, Thomas J. Near

Faculty Publications

A universal paradigm describing patterns of speciation across the tree of life has been debated for decades. In marine organisms, inferring patterns of speciation using contemporary and historical patterns of biogeography is challenging due to the deficiency of species-level phylogenies and information on species' distributions, as well as conflicting relationships between species' dispersal, range size and co-occurrence. Most research on global patterns of marine fish speciation and biogeography has focused on coral reef or pelagic species. Carangoidei is an ecologically important clade of marine fishes that use coral reef and pelagic environments. We used sequence capture of 1314 ultraconserved elements …

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Exposing The Error Hidden In Plain Sight: A Critique Of Calder's (1983) Group Selectionist Seed-Dispersal Hypothesis For Mistletoe “Mimicry” Of Host Plants, Kyle E. Harms, David M. Watson, Luis Y. Santiago-Rosario, Sarah Mathews Nov 2023

Exposing The Error Hidden In Plain Sight: A Critique Of Calder's (1983) Group Selectionist Seed-Dispersal Hypothesis For Mistletoe “Mimicry” Of Host Plants, Kyle E. Harms, David M. Watson, Luis Y. Santiago-Rosario, Sarah Mathews

Faculty Publications

Some mistletoe species (Loranthaceae) resemble their host plants to a striking degree. Various mechanisms have been proposed for the developmental origins of novel traits that cause mistletoes to appear similar to their hosts, as well as for the adaptive phenotypic evolution of such traits. Calder (1983) proposed a logically flawed group selectionist seed-dispersal hypothesis for mistletoes to resemble their hosts. Calder's (1983) hypothesis does not provide a viable potential explanation for mistletoe resemblance to hosts.

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A Target Enrichment Probe Set For Resolving Phylogenetic Relationships In The Coffee Family, Rubiaceae, Laymon D. Ball, Ana M. Bedoya, Charlotte M. Taylor, Laura P. Lagomarsino Nov 2023

A Target Enrichment Probe Set For Resolving Phylogenetic Relationships In The Coffee Family, Rubiaceae, Laymon D. Ball, Ana M. Bedoya, Charlotte M. Taylor, Laura P. Lagomarsino

Faculty Publications

Premise: Rubiaceae is among the most species-rich plant families, as well as one of the most morphologically and geographically diverse. Currently available phylogenies have mostly relied on few genomic and plastid loci, as opposed to large-scale genomic data. Target enrichment provides the ability to generate sequence data for hundreds to thousands of phylogenetically informative, single-copy loci, which often leads to improved phylogenetic resolution at both shallow and deep taxonomic scales; however, a publicly accessible Rubiaceae-specific probe set that allows for comparable phylogenetic inference across clades is lacking. Methods: Here, we use publicly accessible genomic resources to identify putatively single-copy nuclear …

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Influences Of Yogurt With Functional Ingredients From Various Sources That Help Treat Leaky Gut On Intestinal Barrier Dysfunction In Caco-2 Cells, Ricardo S. Aleman, Ryan Page, Roberto Cedillos, Ismael Montero-Fernández, Jhunior Abraham Marcia Fuentes, Douglas W. Olson, Kayanush Aryana Nov 2023

Influences Of Yogurt With Functional Ingredients From Various Sources That Help Treat Leaky Gut On Intestinal Barrier Dysfunction In Caco-2 Cells, Ricardo S. Aleman, Ryan Page, Roberto Cedillos, Ismael Montero-Fernández, Jhunior Abraham Marcia Fuentes, Douglas W. Olson, Kayanush Aryana

Faculty Publications

The impact of yogurts made with starter culture bacteria (L. bulgaricus and S. thermophilus) and supplemented with ingredients (maitake mushrooms, quercetin, L-glutamine, slippery elm bark, licorice root, N-acetyl-D-glucosamine, zinc orotate, and marshmallow root) that can help treat leaky gut were investigated using the Caco-2 cell monolayer as a measure of intestinal barrier dysfunction. Milk from the same source was equally dispersed into nine pails, and the eight ingredients were randomly allocated to the eight pails. The control had no ingredients. The Caco-2 cells were treated with isoflavone genistein (negative control) and growth media (positive control). Inflammation was stimulated using an …

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Synergistic In Vitro Antiviral Effect Of Combinations Of Ivermectin, Essential Oils, And 18-(Phthalimid-2-Yl)Ferruginol Against Arboviruses And Herpesvirus, Liliana Betancur-Galvis, Orlando José Jimenez-Jarava, Fatima Rivas, William E. Mendoza-Hernández, Miguel A. González-Cardenete Nov 2023

Synergistic In Vitro Antiviral Effect Of Combinations Of Ivermectin, Essential Oils, And 18-(Phthalimid-2-Yl)Ferruginol Against Arboviruses And Herpesvirus, Liliana Betancur-Galvis, Orlando José Jimenez-Jarava, Fatima Rivas, William E. Mendoza-Hernández, Miguel A. González-Cardenete

Faculty Publications

Combining antiviral drugs with different mechanisms of action can help prevent the development of resistance by attacking the infectious agent through multiple pathways. Additionally, by using faster and more economical screening methods, effective synergistic drug candidates can be rapidly identified, facilitating faster paths to clinical testing. In this work, a rapid method was standardized to identify possible synergisms from drug combinations. We analyzed the possible reduction in the antiviral effective concentration of drugs already approved by the FDA, such as ivermectin (IVM), ribavirin (RIBA), and acyclovir (ACV) against Zika virus (ZIKV), Chikungunya virus (CHIKV), and herpes virus type 2 (HHV-2). …

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Effect Of Sampling Method On Detection Of The Equine Uterine Microbiome During Estrus, B. A. Heil, M. Van Heule, S. K. Thompson, T. A. Kearns, E. L. Oberhaus, G. King, P. Daels, P. Dini, J. L. Sones Nov 2023

Effect Of Sampling Method On Detection Of The Equine Uterine Microbiome During Estrus, B. A. Heil, M. Van Heule, S. K. Thompson, T. A. Kearns, E. L. Oberhaus, G. King, P. Daels, P. Dini, J. L. Sones

Faculty Publications

Bacterial endometritis is among the most common causes of subfertility in mares. It has a major economic impact on the equine breeding industry. The sensitivity of detecting uterine microbes using culture-based methods, irrespective of the sample collection method, double-guarded endometrial swab, endometrial biopsy, or uterine low-volume lavage (LVL), is low. Therefore, equine bacterial endometritis often goes undiagnosed. Sixteen individual mares were enrolled, and an endometrial sample was obtained using each method from all mares. After trimming, quality control and decontamination, 3824 amplicon sequence variants were detected in the dataset. We found using 16S rRNA sequencing that the equine uterus harbors …

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Electrophertic Deposition And Characterization Of Molybdenum Disulfide On Silicon Substrates, Alex J. Young Nov 2023

Electrophertic Deposition And Characterization Of Molybdenum Disulfide On Silicon Substrates, Alex J. Young

LSU Doctoral Dissertations

The electrical characteristics of 2D materials such as high electron mobility and current density are of great interest to various fields from optoelectronics to renewable energy. Researchers have focused their efforts on transition metal dichalcogenides (TMDCs) due to their direct energy band gap. One such TMDC that has garnered much attention is molybdenum disulfide (MoS2). MoS2 has electrical properties comparable to graphene and is a TMDC with characteristics amenable to applications such as solar cells and sensors. Commonly deposited through time-consuming and complex deposition methods such as chemical vapor deposition (CVD), the viability of MoS2 as an electronic material will …

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The Effects Of Ethanol Preservation On High-Molecular Weight Dna, Maia Jackson Nov 2023

The Effects Of Ethanol Preservation On High-Molecular Weight Dna, Maia Jackson

Honors Capstones

No abstract provided.

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Lipid Oxidative Damage In Mitochondria From Artemia Franciscana Embryos: Anoxic Challenge Followed By Normoxic Recoveries Of Increasing Duration, Samantha Shirmer Nov 2023

Lipid Oxidative Damage In Mitochondria From Artemia Franciscana Embryos: Anoxic Challenge Followed By Normoxic Recoveries Of Increasing Duration, Samantha Shirmer

Honors Capstones

No abstract provided.

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Estimating Household Willingness To Pay For Improved Water Quality Via Community Sewage System, Daniel Harris Nov 2023

Estimating Household Willingness To Pay For Improved Water Quality Via Community Sewage System, Daniel Harris

Honors Capstones

No abstract provided.

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The Intracellular Localization And Function Of The Stress Response Kinase C-Jun Amino- Terminal Kinase In Drosophila Melanogaster, Claire Brescher Nov 2023

The Intracellular Localization And Function Of The Stress Response Kinase C-Jun Amino- Terminal Kinase In Drosophila Melanogaster, Claire Brescher

Honors Capstones

No abstract provided.

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Reactive Oxygen Species Production By Isolated Mitochondria From Embryos Of Artemia Franciscana During Normoxic Recovery After Anoxia, Olivia G. Moncrief Nov 2023

Reactive Oxygen Species Production By Isolated Mitochondria From Embryos Of Artemia Franciscana During Normoxic Recovery After Anoxia, Olivia G. Moncrief

Honors Capstones

No abstract provided.

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Controlling Guest Binding To Transition Metal Hosts Via Redox Stimuli, Jasmine S. Sanford Nov 2023

Controlling Guest Binding To Transition Metal Hosts Via Redox Stimuli, Jasmine S. Sanford

LSU Doctoral Dissertations

Several metal complexes were investigated as potential hosts to execute controllable host- guest interactions using a redox stimulus. Previously, our group has synthesized new CuII m-xylylenebis(pyridyltriazole) (m-xpt) hosts and their redox properties were analyzed. In Chapter 2, we take advantage of the CuII host’s ability to perform redox to investigate its interaction with chloride guest ions. This study was executed with two main Cu-xpt hosts: [Cu2(m- xpt)2(NO3)2](PF6)2 and [Cu2(m-xpt)2Cl2]Cl2. The host-guest interaction was analyzed with additions …

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A Descriptive Study Of Louisiana 4-H 8th Through 12th Graders' Perceptions Of Career And College Readiness, Carrie M. Lane Nov 2023

A Descriptive Study Of Louisiana 4-H 8th Through 12th Graders' Perceptions Of Career And College Readiness, Carrie M. Lane

LSU Master's Theses

As youth leave primary education and enter college or a career path, preparing those youth to ensure success has fallen, in large part, upon formal and non-formal youth educators. Encouraging students to apply and complete college has been a focus of education professionals for many years. Historically, gauging college and career readiness (CCR), academic institutions have relied on academic performance in areas of English Language Arts and Mathematics (Mattern, et. al, 2014). The use of academic focused measures instead of student-based evaluation had its drawbacks. While core education is important, measuring soft skills needed for the workforce and college environment …

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Entorhinal Cortical Delta Oscillations Drive Memory Consolidation, Juhee Haam, Suman Gunin, Leslie Wilson, Sydney Fry, Briana Bernstein, Eric Thomson, Hayden Noblet, Jesse Cushman, Jerrel L. Yakel Oct 2023

Entorhinal Cortical Delta Oscillations Drive Memory Consolidation, Juhee Haam, Suman Gunin, Leslie Wilson, Sydney Fry, Briana Bernstein, Eric Thomson, Hayden Noblet, Jesse Cushman, Jerrel L. Yakel

Faculty Publications

Long-term memories are formed by creating stable memory representations via memory consolidation, which mainly occurs during sleep following the encoding of labile memories in the hippocampus during waking. The entorhinal cortex (EC) has intricate connections with the hippocampus, but its role in memory consolidation is largely unknown. Using cell-type- and input-specific in vivo neural activity recordings, here we show that the temporoammonic pathway neurons in the EC, which directly innervate the output area of the hippocampus, exhibit potent oscillatory activities during anesthesia and sleep. Using in vivo individual and populational neuronal activity recordings, we demonstrate that a subpopulation of the …

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Effects Of Fertigation Versus Palletized Fertilizer On Height And Caliper Growth In Oaks, Zachary M. Davis Oct 2023

Effects Of Fertigation Versus Palletized Fertilizer On Height And Caliper Growth In Oaks, Zachary M. Davis

LSU Master's Theses

The Covid-19 pandemic and ensuing lockdowns led to an increase in revenue and production for green industry products in early 2020. In Study 1. an evaluation of fertigation (liquid feed, quick release) and controlled release fertilizers (CRFs, slow release) were applied to container-grown (7 gallon) live oak (Quercus virginiana) and Nutall oak (Quercus nuttallii) trees (100% Liquid feed, 0% CRF, 67% Liquid feed, 33% CRF, 33% Liquid feed, 67% CRF, 100% Liquid feed, 0% CRF). Live oak trees fertilized with CRFs had increased stem calipers (>30%). Nuttall stem caliper and height were significantly increased by …

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Effects Of A Major Hurricane On Dynamics, Structure, And Composition Of Mississippi River Delta Forests, Lance C. Umlang Oct 2023

Effects Of A Major Hurricane On Dynamics, Structure, And Composition Of Mississippi River Delta Forests, Lance C. Umlang

LSU Doctoral Dissertations

Tropical cyclones recurrently influence coastal forests worldwide. Tree survival (resistance) and post-cyclone recruitment (resilience) can vary with cyclone intensity, producing differences in composition, arboreal structure, and dynamics among affected forests. Studies of tropical cyclone wind effects on coastal forests typically emphasize damage more than post-cyclone responses. We hypothesized that intense cyclones might produce large, stratum-dependent effects that prevent affected forests from returning to pre-storm conditions. We explored direct effects of major Hurricane Katrina and post-hurricane changes in oak-dominated bottomland and cypress/tupelo-dominated swamp forests within the inactive portion of the Mississippi River deltaic plain. Overall mortality was high (14-25%) but concentrated …

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Design, Synthesis And Post Functionalization Of Bodipy Dyes For Use As Chemo Sensors., Caroline Njeri Ndung'u Oct 2023

Design, Synthesis And Post Functionalization Of Bodipy Dyes For Use As Chemo Sensors., Caroline Njeri Ndung'u

LSU Doctoral Dissertations

An overview of BODIPYs history, basic structure, electronic properties is described. Additionally, their attribute of tenability in their photophysical and electronic properties has been discussed. Lastly, their application in the biomedical field as bio imaging, labeling, chemo sensors and photosensitizers are also discussed. In Chapter 2, a library of meso- Pyridyl and meso pyridinium BODIPY dyes was designed, synthesis and comparison on their photophysical, electrochemical and cytotoxic studies done. From this study chlorine atoms at the 2, 6 positions was shown to enhance their relative fluorescence quantum yields in different organic solvents and water. In chapter 3, 8(meso)-pyridyl-BODIPYs with a …

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Productivity Of Wood Ducks, Black-Bellied Whistling-Ducks, And Hooded Mergansers Using Nest Boxes In Louisiana, Dylan L. Bakner Oct 2023

Productivity Of Wood Ducks, Black-Bellied Whistling-Ducks, And Hooded Mergansers Using Nest Boxes In Louisiana, Dylan L. Bakner

LSU Doctoral Dissertations

Resident female wood ducks (Aix sponsa) in the southeastern United States are managed through nest box programs, with the goal of enhancing local hunting opportunities. Historically, hooded mergansers (Lophodytes cucullatus) were the only other cavity-nesting waterfowl species in the southeastern United States known to use these nest boxes. However, the recent northward range expansion of black-bellied whistling-ducks (Dendrocygna autumnalis) has extended into the range of wood ducks and mergansers. All three species are brood parasites, potentially using one another as hosts for their parasitic eggs and impacting their reproductive output. My research evaluated the …

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