Examinando por Autor "Restrepo, Vanessa"

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    Proceso de ASC - ESTUDIO DE MATERIALES CERAMICOS PARA APLICACIONES MEDICAS FASE 2
    (Universidad EAFIT, 2019) Palacio Espinosa, Claudia Constanza; Rendón, José Manuel; Hernández, María Camila; Restrepo, Vanessa; Machado, Santiago; Rodriguez, Valentina; Gil, María José; Universidad EAFIT
    The rapid population growth in recent years has significantly increased the demand for implants, which have traditionally been developed from metallic materials. However, due to the inherent disadvantages of these materials, ceramic implants have been developed, creating a market worth approximately 253 billion dollars annually. Ceramic materials possess several key characteristics that make them suitable for implants, such as biocompatibility, osteoconductivity, easy adhesion, porosity, neutral pH, and excellent mechanical properties. In the Colombian context, there is a noticeable lack of contributions in the field of implants, particularly ceramic ones. This gap presents an opportunity to conduct research that can bring new ideas, propose innovative formulations to tackle new challenges, improve existing implants, and much more, all with the goal of making significant advances in this important global issue. For these reasons, after conducting a technology assesment in the SCOPUS database and engaging in several discussions with experts on the topic, it was observed that Portland cement, commonly used in construction, is an alternative that has not been widely studied.. Thus, it was decided to investigate whether this material is indeed suitable for medical applications. This required studying all the processes needed for Portland cement to meet the mechanical and biological characteristics that would make it a biocompatible material. In essence, the goal of this project is to determine whether Portland cement can be used as a ceramic implant, evaluate its advantages and disadvantages compared to other materials used so far, and explore how to enhance its performance.
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    Proceso de ASC - ESTUDIO DEL CICLO DE VIDA Y DISPOSICION FINAL DE BATERIAS DE VEHICULOS ELECTRICOS-FASE EXPLORATORIA
    (Universidad EAFIT, 2020) Palacio Espinosa, Claudia Constanza; Rodríguez, Valentina; Gil, María José; Rendón, José Manuel; Machado, José Manuel; Hernández, Edxaidys; Restrepo, Vanessa; Herrera, Adrián; Otálvaro, Felipe; Universidad EAFIT
    The high levels of air pollution that have been documented in recent years in the country's main urban areas, consistent with global patterns, have prompted national authorities to consider tax incentives for mobility options that encourage environmentally friendly practices. These measures are designed to not only mitigate existing air pollution but also promote sustainability. As a result, there has been a significant increase in the purchase of electric vehicles. According to Andemos Colombia, as of January 31, 2019, there are 2,826 electric cars and motorcycles in Colombia, including 1,048 cars and 1,778 motorcycles, which is just 0.02% of the total 14,104,129 vehicles in the national fleet. However, some concerns focus on the future, as without proper planning, one problem could be replaced by another, or even worsen. Batteries, which are essentially chemical systems for energy production, are made of materials that can be difficult to recycle without the proper disposal processes, potentially leading to significant soil and water pollution in the future. This concern has raised questions such as: What will be done with the batteries from electric vehicles when they need replacement? How will they be recycled? What processes are necessary for the environmentally responsible disposal of these batteries? Therefore, the materials research group aimed to investigate the composition of these batteries more deeply and explore recycling methods to prevent further environmental damage.