Fostering the art of convergence in global bioethics

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The role of advanced waste-To-energy technologies in landfill mining

Publicado en: WIT Transactions on Ecology and the Environment, Volume 224, Issue 1, 20 September 2017, Pages 403-409Recently, the European Parliament has decided to include a specific reference to "Enhanced Landfill Mining" (ELFM) in the Landfill Directive proposing a regulatory framework for ELFM so as to permit the retrieval of secondary raw materials that are present in existing landfill sites. Recent studies are supporting ELFM since they consider that landfill mining would be economically feasible only if combined with energy recovery (i.e., waste-To-energy, WtE) and if a wide range of materials are recovered (i.e., waste-To-materials, WtM). In this study, a combined material (landfill mining) and energy (advanced WtE) recovery is proposed where the excavated waste (MSW refuse) can be directly recycled or pretreated and used in the production of refuse-derived fuel (RDF) for an advanced (gasification-based) WtE plant producing power and heat. Both material and energy recovery are challenging in the circular economy since contributes to a loop-closing objective in human activities. An exhaustive assessment of each particular landfill site must be carried out in order to determine the profitability of the ELFM.Ministerio de Economía y Competitividad ENE2012-31598Ministerio de Ciencia, Innovación y Universidades CTM2016-78089-RUniversidad de Sevilla Contrato de Acceso al Sistema Español de Ciencia, Tecnología e Innovación (VPPI-US

The cyclical trend of local public service governance: evidence from urban water management in Spain

The level of public and private involvement in economic activity in societies has changed over time. One may talk about the existence of a cyclical trend in which the most important periods of public governance are replaced by periods in which private management dominates the situation. This phenomenon may also be observed in local areas. Some authors have pointed out the existence of an alternation in the provision of municipal services, resulting in periods dominated by governance compared to other stages dominated by private management. In order to illustrate this cyclical trend at local level, this paper intends to analyze the evolution of the governance of the Spanish water supply since the mid-nineteenth century to the present day. Recent evidence from the industry suggests the possibility that we may currently be witnessing a further change in the trend.: Local Government, urban water supply, privatization, municipalization

Manning Up: The representation of masculinity in (500) Days of Summer

Abstract: Romantic comedy is considered a genre whose audience is mostly feminine. However in a genre so easily overlooked by male audiences we can find interesting portrayals of masculinity that are worthy objects of study. This essay examines the portrayal of masculinity in one iconic contemporary romantic comedy: Marc Webb’s 2009 film (500) Days of Summer. Firstly explaining how masculinity is portrayed in contemporary culture and romantic comedy. Secondly analysing Tom’s character in the film context, relating his masculinity to the ideal of masculinity constructed by popular culture influence, the so called “blueprint of masculinity” and Tom’s relation to it. This film is self-conscious about both the conventions of romantic comedy and modern representations of masculinity and delivers a more honest portrayal of masculinity by the end of the film. Keywords: Romantic comedy, masculinity, sexuality, gender, (500) Days of Summer. Resumen: La comedia romántica es un género que tiene una audiencia mayormente femenina. Sin embargo en un género el cual las audiencias masculinas pasan por alto con facilidad, se pueden encontrar interesantes representaciones de la masculinidad las cuales son un buen objeto de estudio. Este ensayo examina la representación de la masculinidad en una comedia romántica contemporánea icónica, a través del análisis del protagonista masculino de (500) Days of Summer, dirigida por Marc Webb en 2009. En primer lugar explicando cómo se representa la masculinidad en la cultura y en la comedia romántica y en segundo lugar analizando el personaje de Tom en el contexto de la película, relacionando su masculinidad con el ideal de masculinidad construido por la influencia de la cultura popular y cómo el personaje de Tom se relaciona con dicha construcción. Ésta es una película que es consciente de tanto las convenciones de la comedia romántica como de las representaciones modernas de la masculinidad, la cual nos proporciona una representación más realista de la masculinidad al final de la película. Palabras clave: Comedia romántica, masculinidad, sexualidad, género, (500) Days of Summer

Estado De Nutrición Y Su Relación Con La Condición Física En Adolescentes De Escuelas Preparatorias.

Tesis de licenciaturaDe acuerdo a la investigación se concluye que no hay relación entre el estado de nutrición y la condición física de los alumnos de las escuelas preparatorias, al obtenerse por X2 valores no significativos. La comparación que encontramos en los diferentes nos muestra que la mayor parte del grupo de estudio tiene normopeso 73%, sobrepeso 16% y obesidad 6% cifras que no concuerdan con el estudio ENSANUT MC 2016. En cuanto al porcentaje de grasa por IMC y por medición de panículos adiposos relacionado con la condición física se encontró en este trabajo de tesis que existe una significancia estadística (valor P≤0.05) en el grupo de las mujeres. El empleo de la batería EUROFIT es un procedimiento sencillo y de fácil aplicación que puede mejorar la realización de pruebas a este grupo de estudio

A sustainable evaluation of drilling parameters for PEEK-GF30

Producción CientíficaThis paper presents a study of hole quality and energy consumption in the process of drilling a thermoplastic polymeric material, polyether-ether-ketone, reinforced with 30% glass fibers (PEEK-GF30). PEEK-GF30’s capacity to be machined has focused on turning operations. Studies of drilling involving thermoplastic polymeric materials have considered materials with other types of matrices, or reinforcement. In this study, quantities such as maximum and mean surface roughness, delamination, maximum thrust force, maximum momentum, and energy required during the process were determined for three types of drill bits, and the most influential factors for each variable were identified using an ANOVA multifactor analysis. The highest quality and lowest energy consumption were achieved for a drill bit rotation speed of 7000 rpm and a feed rate of 400 mm/min with a tungsten carbide (WC) drill bit coated with titanium aluminum nitride (TiAlN). Although a WC drill bit with a diamond point reduces delamination, the roughness increases, thus, the choice of the drill bit type depends on the roughness allowed. A WC drill bit coated with TiAlN produces a good surface finish that can eliminate subsequent operations and requires less energy; thus, this type of drill bit is the most attractive of the types evaluated.Ministerio de Economía de España y Competitividad, (Proyecto DPI2011-27135)Escuela Técnica Superior de Ingenieros Industriales de la UNE (Project ICF03