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Articles 1 - 8 of 8
Full-Text Articles in Physical Sciences and Mathematics
Mapping Per- And Polyfluoroalkyl Substances (Pfas) In South Carolina Surface Waters: Are There Hotspots?, Thomas C. Geiger
Mapping Per- And Polyfluoroalkyl Substances (Pfas) In South Carolina Surface Waters: Are There Hotspots?, Thomas C. Geiger
Senior Theses
Per- and polyfluoroalkyl substances (PFAS) are synthetic chemicals used in consumer products for their unique chemical properties. PFAS compounds are resistant to water, oil, heat, and grease, making them useful for a wide variety of everyday items such as non-stick cooking pans, food packaging, electronics, carpets, upholstery, paints, adhesives, and personal care products.1 The resilient nature of PFAS has made these compounds immensely popular with consumers but has since been considered a potential environmental and public health hazard for their ability to bioaccumulate and for their stability in the environment. More than 6000 PFAS have been discovered in the …
A Comparative Study Of Two Nickel-Based Suzuki-Miyaura Hybrid Molecular Catalysts, Mollie Morrow
A Comparative Study Of Two Nickel-Based Suzuki-Miyaura Hybrid Molecular Catalysts, Mollie Morrow
Senior Theses
Two molecular nickel-based catalysts, (2,2’bipyridine-4,4’-carboxylic acid)nickel(II) chloride and (2,2'-bipyridine-4,4'-diamidopropylsilatrane)nickel(II) chloride, were synthesized and subsequently attached to a solid support in the form of amorphous silicon dioxide to create two hybrid molecular/heterogeneous catalysts. Characterization using ICP-MS and ATR-FTIR confirms that both catalysts are bonded to the SiO2 support. The catalysts were both able to catalyze a Suzuki-Miyarua cross-coupling which their molecular counterparts were unable to; the carboxylate catalyst was able to achieve yields of 10% and the silatrane catalyst achieved yields of up to 50%. Post-reaction analysis indicated that while some catalyst desorption occurred in both complexes, active catalytic species …
Developing Covalent-Organic Frameworks For Protecting Against Radiation, Megan J. Francis
Developing Covalent-Organic Frameworks For Protecting Against Radiation, Megan J. Francis
Senior Theses
This research focuses on the development of lightweight, thermostable dual-function materials for secondary radiation protection and sensing by the integration of hydrogen-rich aliphatic chains inside the porous matrix of covalent-organic frameworks (COFs). The main aims of this project are the synthesis of organic linkers for forming a robust porous COF, synthesizing the porous COF through a condensation reaction, the development of hydrogen-rich aliphatic chains, and integration of aliphatic chains into COFs through click chemistry. This manuscript outlines the methodology and development of a novel self-assembled crystalline, porous material engineered to combine the functions of a shield and sensitive dosimeter. The …
Ahr Expression On Rorc-Expressing Immune Cells Is Essential For I3c-Mediated Protection Against Colitis, Michal C. Williams
Ahr Expression On Rorc-Expressing Immune Cells Is Essential For I3c-Mediated Protection Against Colitis, Michal C. Williams
Senior Theses
Colitis is an inflammatory bowel disorder (IBD) whose etiology is attributed to modification in the luminal microbiota and dysregulation in the immune response. Indole is a signaling molecule which is naturally produced by gut luminal microbiota. Indole-3- carbinol (I3C) is a compound commonly found in vegetables and a ligand for the aryl hydrocarbon receptor (AhR). Previous studies have detected decreased expression and activation on the AhR receptor in colitis patients, thought to possibly alter gut microbiota metabolism, subsequently promoting colitis. 1 AhR, expressed in a variety of immune and epithelial cells, contributes to gut homeostasis by affecting vital mediators such …
Advancing Professional Development Strategies For Chemistry And Biochemistry Undergraduates, Christian A. Brown
Advancing Professional Development Strategies For Chemistry And Biochemistry Undergraduates, Christian A. Brown
Senior Theses
In the Department of Chemistry and Biochemistry at the University of South Carolina (the Department), most curriculum-driven professional development is reserved for third- and fourth-year students. Classroom learning occurs at all levels, but the context comes late. Early exposure to career options and hands-on training is imperative for undergraduates to obtain maximum experiential learning. The purpose of this project is to advance the current professional development strategies of the Department, specifically targeting second- and third-year students. The study surveyed students' current involvement in professional development activities. The data on extracurricular experience and post-graduation interest was used to design a workshop …
A Perspective On How To Improve Undergraduate Research Education In The Physical Sciences At Usc, Michael Caleb Bagley
A Perspective On How To Improve Undergraduate Research Education In The Physical Sciences At Usc, Michael Caleb Bagley
Senior Theses
My years at the University of South Carolina have been some of the most challenging and edifying periods of my life. I have been blessed by having a great professional and chemistry mentor in Dr. John L. Ferry who has helped me engage in scientific research in a meaningful way. As I watched other chemistry students, in particular, struggle with understanding what research really was and even how to understand the results and methodologies of it I felt that this was a huge issue that could be rather simply fixed. I have been privileged to apply for and receive a …
From The Sewing Room To The Ballroom, The Evolution Of Ballroom Dance Costumes, Jessica Marie Russell
From The Sewing Room To The Ballroom, The Evolution Of Ballroom Dance Costumes, Jessica Marie Russell
Senior Theses
Although I have danced all my life, I only began to ballroom dance and dance socially after starting college at the University of South Carolina. While dancing with the Carolina Ballroom Club, I learned some of the history of ballroom dance from our instructors, but I never quite understood how we went from having very conservative court dances to the wide variety of ballroom dances where dancers wear extravagant costumes. I also have been sewing since I was a child; I helped do minor repairs in the costume room for ballet productions, and recently began making clothing for myself. I …
The Chemistry Of Photography, Nichole Marie Witten
The Chemistry Of Photography, Nichole Marie Witten
Senior Theses
People nowadays are used to instant gratification when it comes to taking photographs. They look at a digital display, click a button, and get a perfectly focused and lighted picture that they can see right away. New technologies enable people to have pocket-sized digital cameras, their smart phones, with them at all times, and they’re easy convenient, and fast. Behind a single lens reflex (SLR) film camera, the scenario is much different. More time is needed in framing the image and adjusting the aperture and shutter speed to get the correct exposure, and the film must be processed darkroom before …