http://hdl.handle.net/2117/3308 2013-06-18T21:18:15Z http://hdl.handle.net/2117/19557 Title: Treatment plant design using natural products for the purification of surface waters in Burkina Faso Authors: López Grimau, Víctor; Smith, Tarik; Amante García, Beatriz; Heras, Francisco Abstract: La climatología semi-árida de Burkina Faso (África occidental) es propensa a variaciones estacionales extremas, encadenando largos periodos de sequía con fuertes lluvias concentradas entre los meses de mayo y octubre. Las deficiencias tanto en el suministro de agua como en su calidad, especialmente en zonas rurales, supone la principal causa de enfermedades causadas por parásitos intestinales, con particular incidencia en la población infantil. Este estudio está localizado en una zona rural al norte del distrito de Yako, donde una de cada tres familias no tiene acceso a agua potable. Se centra en el tratamiento de agua mediante la utilización de semillas de la planta moringa oleífera (introducida en el país por comerciantes siglos atrás) como coagulante natural para la eliminación de la turbidez y de las partículas en suspensión de las aguas superficiales. A este tratamiento le sigue un proceso de desinfección química con cloro generado in situ vía electrólisis utilizando una fuente autónoma de suministro eléctrico. Se propone un sistema sostenible de purificación de agua el cual puede sustituir reactivos químicos por productos naturales mediante el empleo de un proceso eficiente energéticamente y de fácil operación. 2013-06-17T09:24:36Z http://hdl.handle.net/2117/19531 Title: Estudio del manejo del plomo en establecimientos de tipografía, reconstrucción de baterías y recicladores de chatarra en el Departamento del Quindío, Colombia Authors: Gomez, Milena E.; Cremades Oliver, Lázaro Vicente Abstract: En el 2011, existían en el departamento del Quindío aproximadamente 95 establecimientos comerciales, dedicados a tipografías, reciclaje de chatarra, y reconstrucción de baterías en donde los trabajadores tenían contacto con metales pesados como el plomo (Pb) sin protección alguna. De estos 95 establecimientos, participaron en el estudio el 55% y de estas empresas se encontró que el 80.65% era economía informal, es decir, independientes, unifamiliares y sin afiliación a la Seguridad Social Integral (Salud, Pensión y Riesgos laborales). El riesgo más importante en estos trabajadores es la manipulación consciente o inconsciente del plomo. El Pb se utiliza en su forma metálica y en aleaciones, siendo de los pocos metales que es tóxico por sí mismo. El Pb no tiene una función biológica útil en el hombre, por lo que es preocupante que se hable de cifras normales de este metal en la sangre. La exposición no controlada del Pb genera graves daños a nivel sistémico del organismo, tales como: disminución de la capacidad física, fatiga, trastornos del sueño, cefalea, dolores de huesos y músculos, dolores abdominales, disminución del apetito y en casos muy graves se produce daño en riñones e incluso la muerte. 2013-06-10T17:24:48Z http://hdl.handle.net/2117/19195 Title: Comparative study of the performance of three cross-flow ceramic membranes for water treatment Authors: Cremades Oliver, Lázaro Vicente; Rodríguez-Grau, Esteban; Rafael, Mulero; Cusidó Fàbregas, Joan Antoni Abstract: Several tests using water as effluent are used to analyse the performance of three types of microfiltration cross-flow ceramic membranes. Two of these membranes are commercial (Atech and Membralox/US Filter) and the third one is experimental. The main differences between them lie in their chemical composition (different origin of raw materials) and in their manufacturing process. The results presented here show the dominant effect of the filtering and the gel layer. Both are formed during operation acting as equalising agent between the three membranes. The membranes tested have similar performances in cross-flow operation, although permeability rates for the membrane Membralox/US Filter were about 15% higher. This increase might be due to the smoother surface formed by a second filtering ultrafiltration layer (0.01 ìm) of 10 ìm width, which probably contributes to a decrease in the thickness of the gel layer formed during operation. Using specific raw materials (non-industrial) as well as a second ultrafiltration layer improves the results in operation (performances and cleaning intervals). However, they are uneconomical because of the extra costs involved. In conclusion, low-cost membranes can achieve similar results to the commercial and more expensive ones opening up their application to new uses and emergent markets. 2013-05-14T09:58:20Z http://hdl.handle.net/2117/19117 Title: Some experiences related to innovation methodologies within the university classroom Authors: Amante García, Beatriz; Martínez Martínez, María del Rosario 2013-05-07T11:07:59Z http://hdl.handle.net/2117/19115 Title: Towards methodological improvement in the Spanish studies Authors: Amante García, Beatriz; Martínez Martínez, María del Rosario 2013-05-07T10:51:03Z http://hdl.handle.net/2117/19114 Title: A proposal to improve your evaluation skills Authors: Amante García, Beatriz; Martínez Martínez, María del Rosario 2013-05-07T10:19:24Z http://hdl.handle.net/2117/19081 Title: Gaseous emissions from ceramics manufactured with urban sewage sludge during firing processes Authors: Cusidó Fàbregas, Joan Antoni; Cremades Oliver, Lázaro Vicente; González Benítez, María Margarita Abstract: The re-use of sewage sludge without any treatment as primary material—mixed with clays—in order to obtain structural ceramics for buildings has been successfully improved. In the Ecobrick® project, the firing of a mixture of specific percentages of three components (clays, sludges and forest debris) resulted in a lighter and more thermal and acoustic insulating brick, compared with conventional clay-bricks. Volatile organic compounds (VOC) emission from the manufacturing of ceramics is the most important aspect to control. In the Ecobrick® project VOC emissions were monitored by using a bench-scale furnace. The study was conducted using an EPA recommended sampling train and portable sampling tubes that were thermally desorbed and analyzed by gas chromatography/mass spectrometry. Drying of raw sewage-sludge and firing processes were considered separately. In this paper, we present VOC emissions coming from the firing step of the Ecobrick® production 2013-05-02T13:35:32Z http://hdl.handle.net/2117/18786 Title: Collaborative environments, a way to improve quality in higher education Authors: Rodríguez Donaire, Silvia; Amante García, Beatriz Abstract: The aim of this research is to observe how Collaborative Web-Based Environments (CWBEs) foster higher education quality improvement by means of enhancing students' teamwork skills, the use of CWBEs and the use of teaching methodologies, particularly PBL. A survey was conducted in three different subjects with similar characteristics in courses held at the ETSEIATBarcelonaTECH among a sample of 98 students. Results shed light on two aspects which improve teamwork performance: 1) the functionality of CWBEs and 2) the ability and motivation of students in these environments. 2013-04-15T10:20:09Z http://hdl.handle.net/2117/18458 Title: Valoración del perfil e ingesta de nutrientes de un grupo de estudiantes iberoamericanos de postgrados en nutrición Authors: García Carrillo, Àgueda; Fernández Díez, Federico Abstract: Introducción: Los hábitos alimentarios tienen una gran influencia sobre la salud de las personas, por ello es de suma importancia profundizar en su estudio para comprobar su adaptación a las recomendaciones actuales y poder realizar políticas de educación nutricional y/o suplementación ajustadas a la realidad. Material y métodos: Estudio transversal descriptivo con la colaboración de estudiantes de postgrado. Los participantes se seleccionaron mediante muestreo no probabilístico accidental enviando vía mail la información del estudio, realizado mediante un cuestionario sobre sus características socio-demográficas y un registro dietético de 3 días. La muestra estuvo formada por n = 50 participantes. Los registros dietéticos de 3 días se valoraron con el software NutrIber y los datos obtenidos fueron tratados mediante el software estadístico SPSS 15. Resultados y discusión: El perfil de los estudiantes es de 80% mujeres y 20% hombres, con edad media de 33,7 ± 9,32 años, e índice de masa corporal de 22,91 ± 4,07. Todos los grupos presentan un consumo excesivo de proteínas y lípidos y deficitario en glúcidos. En cuanto a los micronutrientes es destacable que ningún grupo cubre las ingestas recomendadas de yodo, y que ningún grupo de mujeres cubre las recomendaciones de ingesta de fibra, ácido fólico ni hierro. Conclusiones: Son necesarios más estudios para confirmar los resultados hallado, sin embargo, se puede concluir que las poblaciones urbanas de Latinoamérica cada vez se acercan más al modelo de dieta occidental, rica en proteínas y grasas y pobre en glúcidos, fibra y micronutrientes, lo que es indicativo de dietas pobres en cereales integrales, frutas y verduras 2013-03-21T18:08:34Z http://hdl.handle.net/2117/18184 Title: Altered brain functional connectivity in relation to perception of scrutiny in social anxiety disorder Authors: Gimenez, Monica; Pujol Nuez, Jesus; Ortiz Valencia, Héctor; Soriano-Mas, Carles; López Solà, Marina; Farré, Magí; Deus Yela, Joan; Merlo-Pich, Emilio; Martín-Santos, Rocío Abstract: Although the fear of being scrutinized by others in a social context is a key symptom in social anxiety disorder (SAD), the neural processes underlying the perception of scrutiny have not previously been studied by func- tional magnetic resonance imaging (fMRI). We used fMRI to map brain activation during a perception-of- scrutiny task in 20 SAD patients and 20 controls. A multi-dimensional analytic approach was used. Scrutiny perception was mediated by activation of the medial frontal cortex, insula – operculum region and cerebellum, and the additional recruitment of visual areas and the thalamus in patients. Between-group comparison demonstrated signi fi cantly enhanced brain activation in patients in the primary visual cortex and cerebellum. Functional connectivity mapping demonstrated an abnormal connectivity between regions underlying general arousal and attention. SAD patients showed signi fi cantly greater task-induced functional connectivity in the thalamo-cortical and the fronto-striatal circuits. A statistically signi ficant increase in task-induced functional connectivity between the anterior cingulate cortex and scrutiny-perception-related regions was observed in the SAD patients, suggesting the existence of enhanced behavior-inhibitory control. The presented data indicate that scrutiny perception in SAD enhances brain activity in arousal–attention systems,suggesting that fMRI may be a useful tool to explore such a behavioral dimension. 2013-03-11T17:19:43Z http://hdl.handle.net/2117/18024 Title: Design as system : an approach to graphic and multimedia the design from the perspectives of chaos and general systems theories Authors: Castaldo Suau, Blanca; Fernández Díez, Federico; Monguet Fierro, José María Abstract: Viewing design through the prism of science could give an extraordinary twist to the modern theory of art and design. Establishing, for example, a parallel between the modern concept of design or art and physical systems would enable us to provide a theoretical explanation for the existence of unpredictable, chaotic behaviour in the elements of a design. Furthermore, it would enable the thesis that, contrary to received wisdom, any design project–even one based on scientific methods–is by its very nature indescribable in its totality as, even though we can identify its parts or elements, we can never observe the overall set of interactions between its components. 2013-02-28T17:05:41Z http://hdl.handle.net/2117/17631 Title: Collaborative environments, a way to improve quality in higher education Authors: Rodríguez Donaire, Silvia; Amante García, Beatriz Abstract: The aim of this research is to observe how Collaborative Web-Based Environments (CWBEs) foster higher education quality improvement by means of enhancing students' teamwork skills, the use of CWBEs and the use of teaching methodologies, particularly PBL. A survey was conducted in three different subjects with similar characteristics in courses held at the ETSEIATBarcelonaTECH among a sample of 98 students. Results shed light on two aspects which improve teamwork performance: 1) the functionality of CWBEs and 2) the ability and motivation of students in these environments 2013-02-11T13:38:14Z http://hdl.handle.net/2117/16828 Title: Assessment of responsibility for pollution from PM10 and Sulfur dioxide. Application to an industrial area on the northeastern coast of Venezuela Authors: Rincón Polo, Gladys; Cremades Oliver, Lázaro Vicente Abstract: This study proposes a methodology to determine the origin of industrial emissions in order to attribute responsibility to the industries that pollute nearby towns. The methodology has been applied to the industrial area on the northeastern coast of Venezuela. This area is close to six densely populated towns. The study also gives the estimated PM10 and SO2 levels in the towns adjacent to 11 industries, through modeling the dispersion of air pollutants from stationary sources. The model used has been the Lagrangian particle model LADISMO. The results are discussed by comparing the estimated values by the model with the limits proposed by the World Health Organization and United States Environmental Protection Agency 2012-10-31T19:32:30Z http://hdl.handle.net/2117/16786 Title: Pvlearning: herramienta Web para la enseñanza de la energía solar fotovoltaica Authors: Peña, Rafael; Cruz Gallo, Carmen; Marín Rodrigo, Pedro P.; Díaz Villar, Pablo; Amante García, Beatriz Abstract: En este trabajo, se describe la web www.pvlearning.com, desarrollada en la Universidad de Alcalá para la enseñanza de la energía solar fotovoltaica. PVLEARNING asiste al alumno en la realización de tareas como la evaluación de la radiación solar disponible, la selección de los componentes del sistema, la configuración de éstos y la estimación del rendimiento global y la energía total producida. Frente a otros programas de simulación, la plataforma presenta la novedad de estar enfocada al aprendizaje de la ingeniería de proyectos, sin por ello perder todo el rigor y la funcionalidad necesarios en este tipo de simuladores.This work describes the web www.pvlearning.com, which has been developed at the Universidad de Alcalá for photovoltaic solar energy teaching. PVLEARNING assists the student in tasks such as the evaluation of the solar radiation, the selection of the system components, the configuration of the solar generator and the estimation of the performance ratio, the final yield and the total energy production. In contrast to other simulation programs, the platform has the novelty of being focused on the learning of project engineering, without losing the accuracy and functionality which is required in this kind of simulator 2012-10-23T13:10:54Z http://hdl.handle.net/2117/16785 Title: Development in pedagogical tools: case study videos on innovative local entrepreneurship Authors: Pedraza, Aura; Bravo Ibarra, Edna Rocío; Amante García, Beatriz Abstract: The purpose of this study was to explore the results of the use of videos on case of local business ventures, with the aim of complementing the learning process in the Chair of Business Creation of the School of Industrial and Business Studies of the Industrial University of Santantder (UIS). Quantitative analyses showed that the use of this practice of teaching innovation improved the student's perception of the efficiency of the learning process 2012-10-23T12:39:28Z