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Claver Gil, Juan

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0000-0002-1840-2505
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Claver Gil
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Juan
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  • Publicación
    Metodología para el análisis e interpretación de bienes patrimoniales españoles de tipo industrial. Aplicación al estudio de los bienes de la Comunidad Autónoma de Madrid
    (Universidad Nacional de Educación a Distancia (España). Escuela Técnica Superior de Ingenieros Industriales. Departamento de Ingeniería de Construcción y Fabricación, 2016-04-27) Claver Gil, Juan; Sebastian Perez, Miguel Ángel
    En la presente tesis se define una metodología global compuesta de tres desarrollos parciales con entidad propia e independencia, pero complementarios y que se integran dentro de un enfoque integral para el estudio de los bienes inmuebles patrimoniales de tipo industrial, que abarca desde la identificación de elementos hasta la actuación sobre ellos de cara a su adecuada reutilización. De este modo, en un primer lugar se aborda la identificación, selección y clasificación de bienes inmuebles industriales y, posteriormente, a través de Ja adaptación de la técnica multicriterio de ayuda a la decisión conocida como Proceso Analítico Jerárquico (AHP), se diseñan herramientas para la valoración patrimonial de bienes y la valoración y selección de posibles nuevos usos. Fruto de la primera parte del trabajo se elabora un Catálogo Propio con una muestra de 1354 bienes y una completa estructura de criterios de aplicación común a todos ellos, permitiendo una gran variedad de análisis que hacen posible caracterizar bienes concretos, conjuntos de bienes o territorios. Las herramientas de valoración multicriterio propuestas permiten, en última instancia, identificar los usos menos agresivos para la conservación de las características contenedoras de valor patrimonial desde el punto de vista industrial. Para ello, se vinculan la valoración patrimonial y la valoración de la compatibilidad con los nuevos usos, de cara a incorporar en la selección de la nueva actividad la influencia del valor patrimonial identificado.
  • Publicación
    Cost-effective fully 3D-printed on-drop electrochemical sensor based on carbon black/polylactic acid: a comparative study with screen-printed sensors in food analysis
    (Springer, 2024) Monago Maraña, Olga; Aouladtayib-Boulakjar, Nadia; Zapardiel Palenzuela, Antonio; García Domínguez, Amabel; Ayllón Pérez, Jorge; Rodríguez Prieto, Álvaro; Claver Gil, Juan; Camacho López, Ana María; González Crevillén, Agustín
    3D-printing technology allows scientist to fabricate easily electrochemical sensors. Until now, these sensors were designed employing a large amount of material, which increases the cost and decreases manufacturing throughput. In this work, a low-cost 3D-printed on-drop electrochemical sensor (3D-PES) was fully manufactured by fused filament fabrication, minimizing the number of printing layers. Carbon black/polylactic acid filament was employed, and the design and several printing parameters were optimized to yield the maximum electroanalytical performance using the minimal amount of material. Print speed and extrusion width showed a critical influence on the electroanalytical performance of 3D-PES. Under optimized conditions, the fabrication procedure offered excellent reproducibility (RSD 1.3% in working electrode diameter), speed (< 3 min/unit), and costs (< 0.01 $ in material cost). The 3D-PES was successfully applied to the determination of phloridzin in apple juice. The analytical performance of 3D-PES was compared with an equivalent commercial on-drop screen-printed electrode, yielding similar precision and accuracy but lower sensitivity. However, 3D-PES provides interesting features such as recyclability, biodegradability, low-cost, and the possibility of being manufactured near the point of need, some of which meets several demands of Green Chemistry. This cost-effective printing approach is a green and promising alternative for manufacturing disposable and portable electroanalytical devices, opening new possibilities not only in on-site food analysis but also in point-of-care testing.
  • Publicación
    Analysis of General and Specific Standardization Developments in Additive Manufacturing From a Materials and Technological Approach
    (IEEE Xplore, 2020-06-25) García Domínguez, Amabel; Claver Gil, Juan; Sebastián Pérez, Miguel Ángel; Camacho López, Ana María
    Additive manufacturing processes and products are very present in the current productive landscape, and in fact these technologies have been one of the most intensively studied and improved during the last years; however, there is still no defined and homogeneous regulatory context for this field. In this work, a thorough review of the main general and specific regulatory developments in design, materials and processes standards for additive manufacturing has been carried out, with special attention to the standards for mechanical characterization of polymer-based products. In many cases standards developed for other productive contexts are identified as recommended references, and some contradictory trends can be identified when different documents and previous experiences are consulted. Thus, as it is logical considering that all these technologies are involved in an intensive and continuous evolution process, there is a certain lack of clarity regarding the standards to be considered. This work aims to contribute to clarify the current standardization context in additive manufacturing and provide some guidelines for the identification of appropriate standards. The paper also emphasizes that the key for next regulatory developments in mechanical testing is to develop standards that consider particular AM processes along with materials. Moreover, a great gap between available standard about additive technologies based on metallic materials and polymer materials during the last years has been detected. Finally, the provided overview is considered of interest as support for research and practice in additive manufacturing, and both in intensive productive scenarios and for particular users and makers.