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Novel Abietane Derivatives: Evaluation Of Therapeutic Potential Against Triple Negative Breast Cancer, Sydney Lawson, Fatima Rivas Jan 2026

Novel Abietane Derivatives: Evaluation Of Therapeutic Potential Against Triple Negative Breast Cancer, Sydney Lawson, Fatima Rivas

Distinguished Undergraduate Researcher Program

Of the estimated 2.3 million women globally who will be diagnosed with breast cancer this year, nearly 25% will be diagnosed with the triple negative breast cancer (TNBC) subtype. Because TNBC lacks specific targets present in other breast cancers, conventional selective treatments are ineffective making TNBC more difficult to treat. TNBC is the most lethal subtype of breast cancer in women and causes approximately 150,000 deaths annually, highlighting the critical need for effective therapeutics. Therefore, our aim is to identify new potential therapeutic agents for TNBC.

The abietane natural product family is a group of tricyclic diterpenoids which have been …

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Physiological Leptin Replacement Does Not Reverse Metabolic Adaptations To Starvation In Sprague Dawley Rats, Sydney Junot, Layla Deprimo, Camille Meaux, Arline Narez, David Mcdougal Jan 2026

Physiological Leptin Replacement Does Not Reverse Metabolic Adaptations To Starvation In Sprague Dawley Rats, Sydney Junot, Layla Deprimo, Camille Meaux, Arline Narez, David Mcdougal

Distinguished Undergraduate Researcher Program

Historically, low insulin levels were the signaling event considered responsible for metabolic adaptations to starvation, such as increased sympathetic outflow and increased serum levels of ketones, glucagon, and free fatty acids. Leptin, a hormone produced by adipose tissue, is known to decrease in response to caloric restriction. Recent work in the field suggested that leptin infusion in the final hours of a 48-hour fast reversed all metabolic adaptations to starvation, thus raising questions about an underappreciated role of leptin in the starvation response. This study tested whether physiological leptin replacement, maintaining fed plasma leptin concentrations, during a 72-hour fast in …

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Still A Boy’S Club: Women Journalists & Political News Coverage, Khaleel Oudraogo, Elise Strain Jan 2026

Still A Boy’S Club: Women Journalists & Political News Coverage, Khaleel Oudraogo, Elise Strain

Distinguished Undergraduate Researcher Program

We investigate the level of gender parity in political news reporting at the New York Times. We apply a media sociology approach to examine how gender stereotypes, women in media leadership, and women in political leadership interact to affect the extent to which women journalists appear in bylines about domestic and foreign affairs news. We leverage an original data collection of nearly 3,000 news articles published from 2007–2020. We find several key results. First, women are more likely to appear in bylines about domestic political news than foreign affairs news. Second, we find that during Jill Abramson’s tenure as executive …

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The Role Of Laminin Isoforms In Glioblastoma Migration, Aseel Ahmed, Faezeh Ghobadi, Hanna Devillier, Qi Cai Jan 2026

The Role Of Laminin Isoforms In Glioblastoma Migration, Aseel Ahmed, Faezeh Ghobadi, Hanna Devillier, Qi Cai

Distinguished Undergraduate Researcher Program

Glioblastoma (GBM) remains the most prevalent and lethal invasive brain tumor, denoted by a median survival of 12-15 months despite standard procedures such as safe surgical resection, radiotherapy, and chemotherapy. This limited effectiveness largely arises from the infiltrative nature of GBM cells, which interact with the brain’s extracellular matrix (ECM) by migrating along blood vessels and axonal pathways. The ECM contains the interstitial matrix (IM) and the
basement membrane (BM) made up of proteins and glycans which interact with the malignant cells. While research has mainly been focused on understanding how GBM cells interact with IM components, our knowledge about …

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Passing In Plain Sight: Visibility, Activism, And Identity, Rei Zimmerman Jan 2026

Passing In Plain Sight: Visibility, Activism, And Identity, Rei Zimmerman

Distinguished Undergraduate Researcher Program

The act of passing would seem to be the opposite of activism because it is an act meant to avoid detection. While the language of passing is, itself, problematic, African-descended people passing as white might be read as attempting to capitulate to a racial binary. Similarly, trans people passing as cis or cishet might be read as attempting to capitulate to the gender binary rather than challenging it. But this paper explores the potential for reading passing as a surprising act of activism that foregrounds resistance, resilience, and solidarity rather than disappearance. I focus on Leslie Feinberg’s groundbreaking trans novel …

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Synthesis Of Aza-Bodipy Fluorophores For Conjugation With Egfr- Targeting Molecules, Jada Yeboah, Mistura Olajuwon, Graca Vicente Jan 2026

Synthesis Of Aza-Bodipy Fluorophores For Conjugation With Egfr- Targeting Molecules, Jada Yeboah, Mistura Olajuwon, Graca Vicente

Distinguished Undergraduate Researcher Program

Aza-BODIPY’s are a class of fluorescent dyes characterized by
a boron-difluoride core coordinated to a dipyrromethene-like
framework, where a nitrogen atom replaces the central meso-
carbon atom-referred to as the "aza" position. These dyes are
highly valued in biomedical research where there can be limitations in imaging systems, due to their photophysical properties and the ease with which their structures can be chemically modified. Its structure causes a bathochromic (red) shift in both absorption and emission, typically extending into the
near-infrared (NIR) region. Such properties make them useful
fluorescent markers for applications like tumor imaging and
targeting.

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Developing A Comparative Framework For Organic Matter Loss Using Standardized Soils To Mimic Urbanized Areas, Madison Woodson, Michael (M.P.) Hayes Jan 2026

Developing A Comparative Framework For Organic Matter Loss Using Standardized Soils To Mimic Urbanized Areas, Madison Woodson, Michael (M.P.) Hayes

Distinguished Undergraduate Researcher Program

Rapid urbanization is an ongoing challenge to the natural ecosystem across Louisiana as the state invests in development to accommodate the challenges of flooding in nearby towns and cities. Across Louisiana waterways, flooding from urban developments along with coastal subsidence and relative sea level rise increase the transport of complex organic matter into local water channels. These events lead to higher concentrations of nutrients, specifically bioavailable carbon which can be lost from breakdown of soil organic matter in water. To better understand and predict organic matter transportation due to flooding events caused by urbanization, we studied the availability of organic …

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Property Insurance Losses: A Gulf Coast Hurricane Analysis, Abigail Williams, Jill Trepanier Jan 2026

Property Insurance Losses: A Gulf Coast Hurricane Analysis, Abigail Williams, Jill Trepanier

Distinguished Undergraduate Researcher Program

Many residents living along the U.S. Gulf Coast face the issue of rising costs for property insurance due to the increasing impacts from more intense hurricanes. This study evaluates how North Atlantic hurricane (>= 33 ms-1) landfall wind speed and storm surge impact property insurance losses along the U.S. Gulf Coast during different phases of the North Atlantic Oscillation from 1980 to 2024. The tropical cyclone data used in this study are obtained from the National Oceanic and Atmospheric Administration’s North Atlantic HURDAT2 database. Insurance data come from a variety of sources including the Insurance Information Institute, the National …

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Impact Of Il-10 Deficiency On Lung Function With Allergen Exposure Following In Utero Exposures To Juul Menthol In Mice, Hang Vu, Torrie Cook, Bhawana Devkota, Alexandra Noël Jan 2026

Impact Of Il-10 Deficiency On Lung Function With Allergen Exposure Following In Utero Exposures To Juul Menthol In Mice, Hang Vu, Torrie Cook, Bhawana Devkota, Alexandra Noël

Distinguished Undergraduate Researcher Program

Interleukin-10 (IL-10) is a critical immunomodulatory cytokine that contributes to the maintenance of pulmonary homeostasis and respiratory mechanics. This study investigated the role of IL-10 in lung function following in utero exposure to menthol electronic cigarette aerosol and subsequent allergen challenge. Male IL-10 KO and WT mice were exposed in utero to either air or JUUL menthol (3%) aerosol. At 7-8 weeks of age, mice were assigned to four exposure groups: air-saline (control), air-House Dust Mite (HDM), JUUL-saline, and JUUL-HDM. Pulmonary function parameters including tidal volume, minute volume, breathing frequency, and enhanced pause were assessed using whole-body plethysmography. Mice were …

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Impacts Of Real Microplastic Leachates On The Development And Behavior Of Developing Zebrafish (Danio Rerio), Emma Tsai, Melanie Wilson, Mohamed Ateia, Ahmed Abdelmoneim Jan 2026

Impacts Of Real Microplastic Leachates On The Development And Behavior Of Developing Zebrafish (Danio Rerio), Emma Tsai, Melanie Wilson, Mohamed Ateia, Ahmed Abdelmoneim

Distinguished Undergraduate Researcher Program

Plastic pollution in aquatic environments has increased, raising concerns about the toxicity of microplastics (MPs) and their additives to developing organisms. Additives from the MPs can desorb into the surrounding environment, generating leachates that may impact early development. This study evaluated the effects of early developmental exposure to MP leachates on early developing zebrafish (Danio rerio), quantifying effects on larval survival, development, activity, and behavioral responses to acute stressors. MPs—acrylonitrile butadiene styrene (ABS), polyethylene terephthalate (PET), polyamide 66 (PA66), and reinforced glass fiber (MIX)—were processed into particles (< 500 µm) and incubated in embryo media for 24 hours under UV-C, 35 °C, and agitation to generate leachates. Zebrafish embryos were exposed from 6 to 120 hours post-fertilization (hpf) to varying leachate dilutions (corresponding to 0.063 to 10,000 mg MPs/L). At 120 hpf, larvae were assessed for survival, prevalence of morphological defects, overall growth, baseline activity, and behavioral responses to acoustic, visual, and peripheral irritant stressors. MIX leachate significantly increased mortality, while PET leachate exposure reduced growth. No significant morphological defects were observed across treatments. ABS, PA66, and PET leachates altered larval activity and behavioral stress responses. These preliminary findings suggest that MP leachates pose varying developmental and behavioral risks to developing organisms at critical exposure concentrations. Understanding these risks is crucial for assessing the environmental impact of MPs pollution and informing regulatory policies.

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Semantic Control In The Prefrontal Cortex: An Ale Meta-Analysis, Francesca Thomassee, Christopher Cox Jan 2026

Semantic Control In The Prefrontal Cortex: An Ale Meta-Analysis, Francesca Thomassee, Christopher Cox

Distinguished Undergraduate Researcher Program

Semantic control is the ability to manage our knowledge about the world to ensure that the information produced is appropriate to a given context (Lamdon Ralph et al., 2017). While the left inferior frontal gyrus (LIFG) has been found to be significantly involved in semantic control (Jackson, 2021), it remains unclear if there is a region of the LIFG that is specific to semantic control and is not involved in any other executive tasks. To investigate this, we employed an activation likelihood estimate (ALE) meta-analysis of prior PET and fMRI research including strong-weak association and feature selection tasks. Based on …

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Bird Diy: Building An Rfid System To Study Behavior In Free-Living Starlings, Raedan Stephens, Keegan Stansberry, Christine Lattin Jan 2026

Bird Diy: Building An Rfid System To Study Behavior In Free-Living Starlings, Raedan Stephens, Keegan Stansberry, Christine Lattin

Distinguished Undergraduate Researcher Program

Radio Frequency Identification (RFID) technology can be effectively utilized to gain insights into animal behavior, such as avian responses to environmental change. In our established field system of free-living European starlings (Sturnus vulgaris), we sought to implement a new system of RFID readers with antennas encircling the entrances of bird boxes and RFID leg bands with unique identifiers that record when birds pass through the antennas. To limit costs, we used Arduino RFID readers built by Eli Bridge and Jay Wilhelm and constructed the rest of the system components ourselves. We designed and 3D printed a new device to efficiently …

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Mtor Signaling And Macrophage Recruitment In Polypterus Senegalus, Icyss Sargeant Jan 2026

Mtor Signaling And Macrophage Recruitment In Polypterus Senegalus, Icyss Sargeant

Distinguished Undergraduate Researcher Program

Tissue regeneration is marked by significant macrophage activity. Macrophages aid in signaling pathways for tissue growth and differentiation. Salamanders are the only limbed vertebrates capable of complete limb regeneration. However, Polypterus senegalus can fully regenerate its fins after injury. It has been determined that mTOR signaling by macrophages is active in early regeneration. In this project, we will test whether mTOR signaling is necessary for the recruitment of macrophages to regenerate fins in Polypterus senegalus. We began with immunofluorescence of liposomes in tissue sections to quantify macrophages recruited by mTOR signaling in fish treated with DMSO and RAPA. RAPA has …

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Anxiety Disorders Do Not Modulate Performance Monitoring During Visuomotor Learning, Olivia Perry, Leo Barzi, Kaylie Grimm, Leah Charles, Christopher Hill Jan 2026

Anxiety Disorders Do Not Modulate Performance Monitoring During Visuomotor Learning, Olivia Perry, Leo Barzi, Kaylie Grimm, Leah Charles, Christopher Hill

Distinguished Undergraduate Researcher Program

Humans experience different levels of anxiety throughout their daily lives. Some individuals even experience chronic, unprovoked anxiety that leads to a diagnosis of a psychological disorder known as generalized anxiety disorder. Many neurological diseases develop anxiety as a comorbidity and hinder therapeutic interventions. However, we don’t understand how anxiety disorders may affect the development and learning of new motor skills. Thus, the purpose of this study is to evaluate how different levels of anxiety may affect your ability to learn a new skill. We recruited physically healthy, right-handed young adults with and without a diagnosis of an anxiety disorder. Participants …

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Environmental Influence On The Smart Self-Sensing 3d-Printed Concrete Column, Laraimie Reid, Khalilullah Taj, Yen-Fang Su Jan 2026

Environmental Influence On The Smart Self-Sensing 3d-Printed Concrete Column, Laraimie Reid, Khalilullah Taj, Yen-Fang Su

Distinguished Undergraduate Researcher Program

This study investigates the influence of environmental factors on the self-sensing performance of 3D-printed cementitious composites for structural health monitoring. Square 3D printed column samples containing control mortar and self-sensing cementitious composite (SSCC) were fabricated and cured, then exposed to controlled drying cycles and temperature variations from room temperature to 60°C. Under cyclic compressive loading, changes in electrical resistance were monitored to evaluate the fractional change in resistivity (FCR) and stress sensitivity. The results demonstrate that both internal moisture variation and elevated temperature significantly affect the piezoresistive sensitivity. Although resistance decreased with an increase in humidity and temperature, a better …

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Imposter Syndrome And Coping-Motivated Cannabis Use: The Impact Of Race, Lan Qiu, Katharine Thomas, Julia Buckner Jan 2026

Imposter Syndrome And Coping-Motivated Cannabis Use: The Impact Of Race, Lan Qiu, Katharine Thomas, Julia Buckner

Distinguished Undergraduate Researcher Program

Cannabis use among college students has become increasingly prevalent, with coping being
one of the primary motives for use. Imposter syndrome, characterized by persistent self-doubt
and fear of being exposed as a fraud despite evidence of competence, is particularly common
among students. Given its association to social anxiety and social anxiety’s relation to coping
motives and cannabis-related problems, imposter syndrome may contribute to coping-motivated
cannabis use and related problems. Yet, no known research has examined the impact of race
on the relation of imposter syndrome and cannabis use behaviors among Black and non-
Hispanic/Latine White students. The current sample included …

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Action Research In Action: How Lab Findings Informed Change In Baton Rouge’S Math Classrooms, Brookelyn Pasipanki, Avery Ned, Colleen Sinclair Jan 2026

Action Research In Action: How Lab Findings Informed Change In Baton Rouge’S Math Classrooms, Brookelyn Pasipanki, Avery Ned, Colleen Sinclair

Distinguished Undergraduate Researcher Program

In a 3-year collaboration with the East Baton Rouge Parish School System (EBRPSS), we conducted semi-annual surveys of student motivation to see if we could identify key psychological factors underlying math performance. We developed the Math Mind Measures (MMM) to assess 10 distinct motivational factors. Analyses revealed that math anxiety and math self-efficacy were the strongest predictors of end-of-year standardized test scores. We shared our findings with students and teachers, via focus groups, to shape a Teacher Action Checklist. This checklist aims to inform practice by enhancing motivation and decreasing demotivation. EBRPSS also implemented professional learning trainings to capitalize on …

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Water Remediation And Hydrogen Production With Cobalt-Doped Tio2 Photoanodes, Moises Osorio, Liz Diaz, Caleb Osei-Appau, Fanny Duquet, Anne Lobitz, Chahinez Arroumia, Stéphanie Roualdès, Samuel Bayo, Francois Zaviska, Samuel Snow Jan 2026

Water Remediation And Hydrogen Production With Cobalt-Doped Tio2 Photoanodes, Moises Osorio, Liz Diaz, Caleb Osei-Appau, Fanny Duquet, Anne Lobitz, Chahinez Arroumia, Stéphanie Roualdès, Samuel Bayo, Francois Zaviska, Samuel Snow

Distinguished Undergraduate Researcher Program

Finding clean energy and water sources are some of the most important challenges in the engineering field. The use of TiO2 photoanodes is a promising method for hydrogen production and water treatment. Synthetizing TiO2 using polymeric biosurfactants and/or doping with Cobalt Oxide may allow optimization for both hydrogen production and water treatment. Photocatalytic experiments were performed using a UVA lamp with emissions centered at 395 nm, across different modes of application, such as powder and thin film. Three polymeric biosurfactants were tested, including GBACoco (GC), GBAC18:1 (GB) and BIO868 (BIO), with a range of molar ratios from 0 to 0.5 …

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Bayou Bride: Combining Alligator Leather And Digital Textile Printing In Bridalwear, Martha Rigney, Casey Stannard Jan 2026

Bayou Bride: Combining Alligator Leather And Digital Textile Printing In Bridalwear, Martha Rigney, Casey Stannard

Distinguished Undergraduate Researcher Program

Alligator leather is attractive to luxury consumers because of its unique texture and beauty. However, due to the shape of alligator hides, differing scale patterns, and the hardness of the leather, it is less appealing for usage in apparel. One strategy to retain the visual appeal of alligator leather while improving comfort and versatility is to create photo-realistic digitally printed “alligator” textiles alongside real leather. Discovering new ways to use alligators is crucial to the alligator industry, which is experiencing a price slump. This project focused on the bridal market; the utilization of sublimation dye printing allowed me to experiment …

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Deriving Mercury Exposure Risk From The Feeding Ecology Of Coastal Sharks In Coastal Louisiana, Mallory Miller, Jeffrey Plumlee, Owen Henderson, Sydney Moyo, Michael Hayes Jan 2026

Deriving Mercury Exposure Risk From The Feeding Ecology Of Coastal Sharks In Coastal Louisiana, Mallory Miller, Jeffrey Plumlee, Owen Henderson, Sydney Moyo, Michael Hayes

Distinguished Undergraduate Researcher Program

Coastal sharks have high concentrations of mercury (Hg) in tissues, but what increases mercury exposure is unclear. Blacktip (Carcharhinus limbatus) and bull (Carcharhinus leucas) sharks are commonly harvested in Louisiana’s commercial shark fishery. Because of health risk from mercury consumption, we ask: Are there food web characteristics that increase exposure of sharks to mercury? Biomarkers, such as stable isotopes sulfur (δ³⁴S) and nitrogen (δ¹⁵N) indicate feeding habits linked to prey trophic level and prey use of freshwater which influences total mercury (THg) concentrations. We hypothesize increasing trophic level (higher δ¹⁵N) and increasing reliance on freshwater prey (higher δ³⁴S) will increase …

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Feelings And Futures: Social Design Addressing Identity And Engagement Of Adolescent Girls In A Community-Based Organization, Eseoghene Mukoro Jan 2026

Feelings And Futures: Social Design Addressing Identity And Engagement Of Adolescent Girls In A Community-Based Organization, Eseoghene Mukoro

Distinguished Undergraduate Researcher Program

Community organizations can provide numerous benefits to adolescent youth in various aspects of their lives—socially, psychologically, and physically, to name a few. Unfortunately, many youth-serving organizations aim to serve youth without directly involving their perspectives in the creation of their respective programs. At the Gardere Initiative, adolescent girls appear to have low levels of engagement and belonging, while their male counterparts enjoy activities and spaces catered to them. This poses a question of how this community organization might better serve the desires and life context of these adolescent girls.
Social Design is the practice of designing an intervention (product, service, …

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Memory For Everyday Chores In Younger And Older Adults, Cameron Mccleary, Katie Cherry Jan 2026

Memory For Everyday Chores In Younger And Older Adults, Cameron Mccleary, Katie Cherry

Distinguished Undergraduate Researcher Program

This study examined episodic memory performance for everyday household chores in younger (18-32 years) and older adults (65-79 years). With the increasing older adult population in the United States, understanding age-related memory differences and identifying strategies to enhance memory performance in later life is needed. Building on previous research demonstrating the pictorial superiority effect and benefits of semantic encoding across the adult lifespan, this study utilized a 2 × 2 × 2 between-groups factorial design to investigate the effects of age group (younger, older), encoding task (standard intentional learning, semantic elaboration), and stimulus format (text only, text with pictorial illustrations) …

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Relearning Language: A Meta-Analysis Of Syntactic Priming In Aphasia, Ally Miller, Willem Van Boxtel Jan 2026

Relearning Language: A Meta-Analysis Of Syntactic Priming In Aphasia, Ally Miller, Willem Van Boxtel

Distinguished Undergraduate Researcher Program

Background: Despite the importance of grammatical skills for participation
in daily life, treatments for sentence–level abilities in aphasia
are comparatively scarce. The psycholinguistic paradigm of syntactic
priming has recently been advanced as a potential assessment and
treatment for grammatical skills, and existing evidence on priming in
aphasia is highly promising. Nevertheless, a comprehensive analysis of
the strength of priming effects in aphasia, as well as treatment components
which might amplify these effects, has not been reported.
This meta–analysis synthesizes existing findings on syntactic priming
in aphasia, aiming to provide a comprehensive picture of priming
effects and their potential application for …

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The Healing Power Of Nanoparticles: Bioengineering Gelatin Films With Lignin-Graft-Plga Nanoparticles For Enhanced Tissue Repair, Marie Howe, Cristina Sabliov, Thanida Chuacharoen, Willyam Nikiema Jan 2026

The Healing Power Of Nanoparticles: Bioengineering Gelatin Films With Lignin-Graft-Plga Nanoparticles For Enhanced Tissue Repair, Marie Howe, Cristina Sabliov, Thanida Chuacharoen, Willyam Nikiema

Distinguished Undergraduate Researcher Program

Fish gelatin, a biocompatible material, can be methacrylated to enable its photo-crosslinking and formation of hydrogels for tissue-repair applications (1). This study investigated the incorporation of lignin-grafted PLGA nanoparticles (LNPs) into 3D-printed fGelMA hydrogels as controlled drug delivery systems. Lignin has UV absorbing properties, which could potentially interfere with photocrosslinking of fGelMA (2). These LNPs possess hydrophobic PLGA core and hydrophilic lignin forming the shell providing ample opportunities for delivery of drugs of different chemistries (3). Fluorescent LNPs (FLNPs) were engineered by covalently bonding a fluorophore to the shell prior to nanoparticle synthesis to allow for fluorophore tracking. The understanding …

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Motor Planning And Execution During Feeding In Autistic Children, Iresa Lincoln Jan 2026

Motor Planning And Execution During Feeding In Autistic Children, Iresa Lincoln

Distinguished Undergraduate Researcher Program

Autism is one of the most common pediatric developmental disability diagnoses, diagnosed in approximately 1 in 31 children in the U.S. and 1 in 100 children globally. Autism is often characterized by differences in social communication and repetitive patterns of behavior, activities,
or interests; however, prevalence of clinically significant motor differences in autistic individuals is between 50-95%. These motor differences often interfere with activities of daily living and community participation. Research assessing motor control in autism has yielded mixed findings as to whether the motor differences observed in autistic individuals are associated with differences in motor planning or motor execution. …

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Bridging Distances: Exploring Teleoperation’S Present And Prospects In The Construction Industry, Marc Hebert, Aras Maqsoodi, Ali Kazemian Jan 2026

Bridging Distances: Exploring Teleoperation’S Present And Prospects In The Construction Industry, Marc Hebert, Aras Maqsoodi, Ali Kazemian

Distinguished Undergraduate Researcher Program

Telerobotics has enabled major advancements and developments in multiple fields by providing safer robotic solutions. The construction industry has previously employed teleoperation, but its use has been limited in scope and primarily focused on earthwork. Teleoperation is a valuable tool for ensuring safe operations in extreme environments and inaccessible areas, enabling construction workers to remotely oversee tasks that are traditionally high-risk. Recent advancements in high-speed telecommunication networks, innovative control systems, and growing research in teleoperation have significant potential and practicality for application in the construction industry. This paper reviews the existing literature on construction teleoperation, emphasizing how advancements in Human-Machine …

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Evaluation Of Liberty® Herbicide For Zygosity Verification In Transgenic Maize (Zea Mays) Expressing The Bar Gene From Streptomyces Hygroscopicus, Isabel Hau Jan 2026

Evaluation Of Liberty® Herbicide For Zygosity Verification In Transgenic Maize (Zea Mays) Expressing The Bar Gene From Streptomyces Hygroscopicus, Isabel Hau

Distinguished Undergraduate Researcher Program

Maize (Zea mays) is a major global crop cultivated for food and feed. Most commercial varieties grown in the United States contain herbicide-resistant traits to facilitate weed management. One such herbicide trait is Liberty-Link, which contains the bialaphos resistance (bar) gene from Streptomyces hygroscopicus that confers resistance to glufosinate-ammonium, the active
ingredient in Liberty herbicide. This bar gene is also widely used as a selectable marker in plant transformation. In non-transgenic plants, glufosinate-ammonium inhibits plant glutamine synthetase by acting as a glutamate analog, thereby disrupting amino acid biosynthesis and leading
to plant death. In contrast, transgenic plants expressing the bar …

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Characterization Of The Crazy Sphinx Skarn Deposit, Boulder Batholith, Helena, Mt, Samuel Juneau Jan 2026

Characterization Of The Crazy Sphinx Skarn Deposit, Boulder Batholith, Helena, Mt, Samuel Juneau

Distinguished Undergraduate Researcher Program

The Boulder Batholith of southwest Montana is a geologically significant locality due to its high concentrations of critical metals like copper, lead, zinc, silver, gold, and molybdenum. The Crazy Sphinx Mine, a locality discovered and named by Bart Cannon, is well known for producing high quality mineral specimens of blue spinel, colorless grossular, and amber vesuvianite. The Crazy Sphinx Mine is interpreted to be a skarn deposit of the Boulder Batholith which is hosted in interbedded limestone and clay mudstone. To date there have been no publications on Crazy Sphinx Mine characterizing the overall mineral assemblage of the skarn deposit. …

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Measuring The Rise And Fall Of Plasma 25-Hydroxyvitamin D Concentrations In Blue-Tongued Skinks (Tiliqua Scincoides) Following Ultraviolet B Exposure And Withdrawal, Ashleigh Godke, Haerin Rhim, M. Graciela Aguilar, Keishla Marrero-Acosta, Mark Mitchell Jan 2026

Measuring The Rise And Fall Of Plasma 25-Hydroxyvitamin D Concentrations In Blue-Tongued Skinks (Tiliqua Scincoides) Following Ultraviolet B Exposure And Withdrawal, Ashleigh Godke, Haerin Rhim, M. Graciela Aguilar, Keishla Marrero-Acosta, Mark Mitchell

Distinguished Undergraduate Researcher Program

Species-specific husbandry guidelines remain limited for blue-tongued skinks (Tiliqua scincoides), especially in relation to ultraviolet B (UVB) lighting and vitamin D requirements. This study aimed to determine whether UVB exposure is necessary for these skinks and how long 25-hydroxyvitamin D (25-OHD) concentrations persist after UVB withdrawal. Eleven adult skinks who had been fed with wet cat food were exposed to 12 or 2 h of UVB per day for four weeks. Plasma 25-OHD concentrations were very low at the baseline, and significantly increased post-UVB in both groups (p < 0.01), with the 12-hour group increasing from baseline concentrations of 18.5 [12.8–20.5] nmol/L to 820 [730–1251.3] nmol/L and the 2-hour group increasing from baseline concentrations of 22 [15.5–22] nmol/L to 635 [401–892.5] nmol/L. Following the discontinuation of UVB exposure, 25-OHD gradually declined and was not significantly different from baseline concentrations at 7 and 4 months for the 12-hour and 2-hour groups, respectively. Dietary vitamin D3 (2.5 IU/g as dry matter basis), provided through wet cat food alone, appeared insufficient to support sustained plasma 25-OHD concentrations. These findings strongly suggest that blue-tongued skinks rely on UVB exposure to increase their 25-OHD concentrations. Moreover, the shorter 2-hour exposure provided a significant rise in 25-OHD concentrations and remained above baseline for 4 months, suggesting the shorter exposure can benefit these animals, while potentially reducing secondary risks associated with UVB exposure.

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From Millionaires To Marsh Island: Origin And Development Of Wetland Conservation Efforts In Louisiana, Roan Guidry Jan 2026

From Millionaires To Marsh Island: Origin And Development Of Wetland Conservation Efforts In Louisiana, Roan Guidry

Distinguished Undergraduate Researcher Program

Wetlands are protected, managed, and restored worldwide to provide a range of ecosystem services, including (i) habitat for plants and animals, (ii) carbon storage, (iii) improving downstream water quality, and (iv) reducing flooding by river and coastal waters. When did such conservation begin, and how do early conservation efforts shape recent public policy? This thesis identifies some of the earliest recorded examples of private efforts in Louisiana and analyzes how these early efforts shaped State and Federal Government action in the realm of conservation. The earliest wetland protection efforts in Louisiana began in the 1910s to sustain continental populations of …

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