TAMU-CC Repository

The Texas A&M University‐Corpus Christi (TAMU‐CC) repository is an open online site for storing and sharing digital content created or owned by the TAMU‐CC community. Content includes published and unpublished research and scholarship as well as archival materials. The service is managed by the Mary and Jeff Bell Library in cooperation with the Texas Digital Library. Learn more

 

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Recent Submissions

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Determining the effects environmental pollution have on the colonization of arbuscular mycorrhizae fungi (AMF) in coastal dune grass species, Spartina spartinae.
(2024-05-25) Garcia, Breanna
Almost all plants form a symbiotic association with mycorrhiza, which is a special type of fungi that can colonize the root cells of plants. Mycorrhiza provides benefits for the host plants by aiding in nutrient acquisition while plants provide carbon sources to the fungi. Environmental disturbances, like metal contaminations, have the potential to alter these plant-mycorrhizal symbioses. Leveraging on a site with long history of heavy metal and oil pollution in the coastal prairie dune ecosystems in Mustang Island, we assessed how long-term exposure to contaminants impact the rate of AMF (arbuscular mycorrhizal fungi) colonization into the plant roots. We collected roots from fourteen Spartina spartinae (Gulf cordgrass) plants, a dominant gulf dune grass in Mustang Island, from an area with known previous oil and metal contaminations and a nearby uncontaminated or healthy area. We quantified AMF colonization by staining the roots with trypan blue solution and employing the grid-line intersection method. Comparisons were made between plants growing in contaminated versus uncontaminated soils. Analyses revealed that there is more AMF presence in contaminated plants, including more numbers of hyphae, vacuoles, arbuscules and even DSE (dark septate endophytes) compared to plants in the uncontaminated site. These findings suggest that plant-mycorrhizal symbiotic associations are strengthened under long-term exposure to environmental disturbance, potentially due to reciprocal benefits they provide to each other. Our results provide new insights into how environmental pollution can alter plant-mycorrhizal symbioses, and the potential to harness plant-AMF symbioses for coastal restoration. For example, fungal symbionts that can aid in plant recovery and establishment can be used to inform and guide efforts to protect and restore coastal ecosystems under shifting environmental conditions or as a bioremediation tool.
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Muffled Sound
(2024-05-10) Labonte, Lauren
Clay is a medium for sculpture and that has been used since the beginning of mankind. Historically, it was used for idols and vessels for religion and everyday use. In the body of work which I call Muffled Sound, I utilized the method of wheel-throwing, which uses centripetal force, to create cylindrical vessels and slip-casting to cast molds of baby doll arms. Also, I incorporate the process of slip-casting since it allows me to use molds and utilize the idea of multiples in order to bring about a sense of anxiety in the repetition of forms. The process of wheel-throwing allows me to use a traditional technique with a traditional medium to connect with the origins of humanity as well as my very human anxieties. Both of these techniques as well as the imagery allows me to explore the effects of taking on the stresses that come with life as the arms slowly begin to take over the vessel. This type of work is important in allowing us to rethink how women’s roles are represented in society and it helps me deal with anxieties over family and identity.
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Young adults retirement study survey
(2024-05-08) Mitchell, Luke
Understanding young adults financial behavior can provide financial service companies and advisors with the tools to find suitable marketing communication to specific customers. The purpose of this study is to better understand which type of retirement communication strategy works best for increasing young adults' participation and investment amounts.
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Synthesis of symmetric bifurcated amino acid surfactants
(2024-05-05) Harris, Jonah
My project focuses on how structure-based predictive tools can investigate and explain the features responsible for self-assembly, function, supramolecular structure, and molecular recognition in bifurcated amino acid-based surfactants (AABSs). Bifurcated amino acid-based surfactants are branched compounds synthesized from natural amino acids and fatty acids. The overall goal of my project is to synthesize bifurcated amino acid-based surfactants and to use proton nuclear magnetic resonance (1H-NMR) spectroscopy to verify the synthesis of these compounds. This project paves way for future studies in critical micelle concentration (CMC), aggregate morphology, and applied studies in pharmaceuticals. This project relates to my degree in biomedical sciences because amino acid-based surfactants increase the bioavailability of pharmaceuticals and can act as drug-delivery agents.
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Votes, not vows: Do ideological labels predict electoral performance? A look between electorally safe and marginal members
(2024-05-01) Perez-Torres, Joselin
Does a House member need to worry about electoral ramifications for being too ideologically? This research will investigate the relationship between an incumbent’s electoral performance and ideological extremism (roll call support for their party) — controlling for electoral security, challenger quality, presidential vote, campaign spending, partisan affiliation, and seniority, analyzing results for the 116th Congress. The study produces unexpected findings. Not all incumbents receive a lower vote share for casting more ideologically extreme rollcall votes. In particular, for electorally vulnerable members of Congress, they receive an electoral penalty for being more ideologically extreme. Conversely, ideological extremism has no impact for electorally secure members of Congress. Consequently, this study contributes to the understanding of ideology and electoral accountability today.