885 resultados para Moreno-Durán


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La intervención del diseño en los procesos de orientación se produce desarrollando recursos y sistemas de información espacial, de intencionalidad comunicativa para orientar y direccionar a las personas en los entornos arquitectónicos, urbanos y naturales. Esa intervención es secuencial e implica, por una parte, tareas documentales y analíticas y, por otras, acciones coordinadas y sistemáticas de diseño. El modelo conceptual aquí desarrollado pretende articular elementos básicos del proceso y diseño wayfinding, situándolos en el “Diseño para Todos”. En ese contexto, PERSONA y MEDIO son los puntos de partida que el diseño wayfindig trata de cohesionar para que la interrelación entre ambos resulte positiva, es decir, eliminando o limitando los posibles conflictos existentes en esa relación.

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The conversion of plant biomass-derived carbohydrates (preferably non-edible) into added-value products is envisaged to be at the core of the future biorefineries. Carbohydrates are the most abundant natural organic polymers on Earth. This work deals with the chemical valorisation of plant biomass, focusing on the acid-catalysed conversion of carbohydrates (mono and polysaccharides) to furanic aldehydes, namely 2-furaldehyde (Fur) and 5-hydroxymethyl-2-furaldehyde (Hmf), which are valuable platform chemicals that have the potential to replace a variety of oil derived chemicals and materials. The investigated reaction systems can be divided into two types depending on the solvent used to dissolve the carbohydrates in the reaction medium: water or ionic liquid-based systems. The reaction temperatures were greater than 150 ºC when the solvent was water, and lower than 150 º C in the cases of the ionic liquid-based catalytic systems. As alternatives to liquid acids (typically used in the industrial production of Fur), solid acid catalysts were investigated in these reaction systems. Aiming at the identification of (soluble and insoluble) reaction products, complementary characterisation techniques were used namely, FT-IR spectroscopy, liquid and solid state NMR spectroscopy, TGA, DSC and GC´GC-ToFMS analyses. Complex mixtures of soluble reaction products were obtained and different types of side reactions may occur. The requirements to be put on the catalysts for these reaction systems partly depend on the type of carbohydrates to be converted and the reaction conditions used. The thermal stability is important due to the fact that formation of humins and catalyst coking phenomena are characteristically inherent to these types of reactions systems leading to the need to regenerate the catalyst which can be effectively accomplished by calcination. Special attention was given to fully inorganic nanoporous solid acids, amorphous or crystalline, and consisting of nano to micro-size particles. The investigated catalysts were silicoaluminophosphates, aluminosilicates and zirconium-tungsten mixed oxides which are versatile catalysts in that their physicochemical properties can be fine-tuned to improve the catalytic performances in the conversion of different substrates (e.g. introduction of mesoporosity and modification of the acid properties). The catalytic systems consisting of aluminosilicates as solid acids and water as solvent seem to be more effective in converting pentoses and related polysaccharides into Fur, than hexoses and related polysaccharides into Hmf. The investigated solid acids exhibited fairly good hydrothermal stabilities. On the other hand, ionic liquid-based catalytic systems can allow reaching simultaneously high Fur and Hmf yields, particularly when Hmf is obtained from D-fructose and related polysaccharides; however, catalyst deactivation occurs and the catalytic reactions take place in homogeneous phase. As pointed out in a review of the state of the art on this topic, the development of truly heterogeneous ionic liquid-based catalytic systems for producing Fur and Hmf in high yields remains a challenge.

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Se analizará la participación de las naciones europeas y africanas en la trata negra, que consolido la economía mercantil, de la que se derivo la revolución industrial.

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Este Plan contiene algunas directrices generales, así como varias propuestas que pretenden condensar las reflexiones emanadas de un diálogo continuo con profesores e investigadores de nuestra Universidad, con alumnos pertenecientes a diversas generaciones formadas en las licenciaturas, tanto del sistema escolarizado como del abierto y del Posgrado. También incorpora las reflexiones surgidas de mi participación en comisiones académicas y en el desempeño de tareas administrativas. Pero sobre todo, se nutre del ejercicio permanente de la docencia, uno de los espacios más fecundos de la vida universitaria.

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Tese dout., Literatura Comparada, Faculdade de Letras da Universidade de Lisboa, 2006

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Este artigo aborda a relação entre turismo e literatura, sob o pressuposto de que a valorização turístico-literária de um destino pode contribuir para o reforço da sua identidade e geniusloci. Paralelamente, assenta no estudo da vida e obra do poeta algarvio João Lúcio e constitui-se como uma reflexão exploratória sobre a possibilidade de desenvolvimento do turismo literário em Olhão.

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Nascido em 1860, em Vila Nova de Portimão, Manuel Teixeira Gomes foi Presidente da República Portuguesa e autor de uma vasta obra literária. A relevância política e cultural desta personalidade algarvia justifica, a nosso ver, a elaboração do roteiro turístico com base na sua vida e obra que aqui apresentamos e que constitui um complemento à oferta turística da região.

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Blavigator (blind navigator) is a vision aid for blind and visuaIIy impaired persons. It supports local navigation by detecting waIkable paths in the immediate vicinity of the user. It guides the user for centering on the path.

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Dissertação de mestrado, Psicologia Clínica e da Saúde, Faculdade de Ciências Humanas e Sociais, Universidade do Algarve, 2015

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Relatório de estágio de mestrado, Ciências da Educação (Educação Intercultural), Universidade de Lisboa, Instituto de Educação, 2011

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Trabalho de Projecto de mestrado, Ciências da Educação (Administração Educacional), Universidade de Lisboa, Instituto de Educação, 2012

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The occurrence of symptoms in pollen allergy patients in urban areas may be affected by local environmental factors such as sources of pollution, natural and ornamental vegetation, local architecture impeding dispersion, etc. The aim of this study was to analyse the frequency of sensitization in pollen allergy patients and the relationship with antihistamine sales. For this study, a large number of clinical records, together with pharmaceutical and pollen data, were collected between 1999 and 2001 in the city of Córdoba, in the south of the Iberian Peninsula. Differences were observed in the symptoms suffered by pollen allergy patients in different areas of the city due to varying local emission of both biological and non-biological particles. Temporal distribution of symptoms over the three study years was influenced by meteorological factors, especially rainfall patterns; higher water supply to plants was associated with increased airborne pollen concentrations. Air pollution might be one of the main factors affecting the distribution of pollen allergy patients within the city. Recent years have seen a worsening of symptoms and increased sensitization to urban species such as plane-trees.

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Dissertação (mestrado)—Universidade de Brasília, Faculdade de Ciência da Informação, Programa de Pós-Graduação em Ciência da Informação, 2016.