Reforço sísmico de estruturas em adobe

A construção em alvenaria de adobe tem um vasto património a nível mundial. É possível encontrar construção em terra no nosso território, sendo que a técnica particular do adobe foi amplamente utilizada na região de Aveiro durante o século XIX até meados do século XX. Devido à tradição e valor patrimonial da construção em alvenaria de adobe, diversos trabalhos têm vindo a ser desenvolvidos no departamento de Engenharia Civil da Universidade de Aveiro, perspetivando um aprofundar de conhecimentos acerca deste tipo de construção. A vulnerabilidade sísmica das construções em alvenaria de adobe fez com que surgissem vários estudos para caracterização sísmica das mesmas, sendo que, recentemente, foi levada a cabo a realização de um ensaio cíclico, simulando os efeitos de um sismo, num modelo de adobe à escala real, construído no laboratório do departamento de Engenharia Civil da Universidade de Aveiro. A presente dissertação tem como objetivo estudar formas de reparação e reforço sísmico de estruturas em adobe. Para isso foi reparado e reforçado o modelo previamente ensaiado, e novamente submetido a um ensaio cíclico, de modo a fazer-se uma análise comparativa com o ensaio prévio e assim retirar conclusões sobre a eficácia da solução de reforço aplicada.

Resposta de Chromobacterium Violaceum cultivada em alta concentração de ferro

The Chromobacterium violaceum is a β-proteobacterium Gram-negative widely found in tropical and subtropical regions, whose genome was sequenced in 2003 showing great metabolic versatility and biotechnological and pharmaceutical potential. Given the large number of ORFs related to iron metabolism described in the genome of C. violaceum, the importance of this metal for various biological processes and due to lack of data about the consequences of excess of iron in free-living organisms, it is important to study the response mechanism of this bacterium in a culture filled with iron. Previous work showed that C. violaceum is resistant to high concentrations of this metal, but has not yet been described the mechanism which is used to this survival. Thus, to elucidate the response of C. violaceum cultured in high concentrations of iron and expecting to obtain candidate genes for use in bioremediation processes, this study used a shotgun proteomics approach and systems biology to assess the response of C. violaceum grown in the presence and absence of 9 mM of iron. The analysis identified 531 proteins, being 71 exclusively expressed by the bacteria grown in the presence of the metal and 100 just in the control condition. The increase in expression of proteins related to the TCA cycle possibly represents a metabolic reprogramming of the bacteria caused by high concentration of iron in the medium. Moreover, we observed an increase in the activity assay of superoxide dismutase and catalase as well as in Total Antioxidant Activity assay, suggesting that the metal is inducing oxidative stress in C. violaceum that increases the levels of violacein and antioxidant enzymes to better adapt to the emerging conditions. Are also part of the adaptive response changes in expression of proteins related to transport, including iron, as well as an increased expression of proteins related to chemotaxis response, which would lead the bacteria to change the direction of its movement away from the metal. Systems Biology results, also suggest a metabolic reprogramming with mechanisms coordinated by bottleneck proteins involved in transcription (GreA), energy metabolism (Rpe and TpiA) and methylation (AhcY)

Estudo sobre o efeito dos parâmetros de processamento dos pós e sinterização do aço inox 316l reforçado com NbC

This masther dissertation presents a contribution to the study of 316L stainless steel sintering aiming to study their behavior in the milling process and the effect of isotherm temperature on the microstructure and mechanical properties. The 316L stainless steel is a widely used alloy for their high corrosion resistance property. However its application is limited by the low wear resistance consequence of its low hardness. In previous work we analyzed the effect of sintering additives as NbC and TaC. This study aims at deepening the understanding of sintering, analyzing the effect of grinding on particle size and microstructure and the effect of heating rate and soaking time on the sintered microstructure and on their microhardness. Were milled 316L powders with NbC at 1, 5 and 24 hours respectively. Particulates were characterized by SEM and . Cylindrical samples height and diameter of 5.0 mm were compacted at 700 MPa. The sintering conditions were: heating rate 5, 10 and 15◦C/min, temperature 1000, 1100, 1200, 1290 and 1300◦C, and soaking times of 30 and 60min. The cooling rate was maintained at 25◦C/min. All samples were sintered in a vacuum furnace. The sintered microstructure were characterized by optical and electron microscopy as well as density and microhardness. It was observed that the milling process has an influence on sintering, as well as temperature. The major effect was caused by firing temperature, followed by the grinding and heating rate. In this case, the highest rates correspond to higher sintering.

Projecto Arte e Educação no Espaço Museológico : estudo exploratório de uma investigação-acção no Museu Nacional de Arte Contemporânea

O projecto Arte e Educação no Espaço Museológico realizado no Museu Nacional de Arte Contemporânea, no âmbito do Mestrado em Arte e Educação da Universidade Aberta, pretende afirmar que todos os espaços do museu intervêm junto dos diversos públicos e são importantes para que os museus sejam lugares de maravilhamento, de encontro, de reflexão, de criatividade e de aprendizagem. Em parceria com o Serviço Educativo do Museu, a Cafetaria desenvolveu, de forma articulada, actividades envolvendo grupos distintos de públicos e a exposição Pintura Portuguesa 1850-1975, com o objectivo de contribuir para a atractividade do museu e valorizar a experiência dos visitantes. O projecto desenvolvido teve em conta a transmutação das paredes do museu em si mesmo para o espaço da Cafetaria como lugar de tertúlia, onde foi possível num ambiente não formal a consumação das diversas actividades realizadas no espaço do MNAC como a sua abertura e complementaridade de uma outra forma de ser/estar no museu. A abrangência de públicos que integraram este projeto proporcionam uma troca rica de saberes, de vivências, de experiências e de uma diversidade plural de ver /estar no mundo. Para além, do contacto com a arte pictórica na sua maior essência e da fruição estética, foi possível proporcionar a estes públicos o contacto com uma outra forma de arte, a gastronomia, tantas vezes retratada por diversos artistas. Este projecto pretende ser uma lufada de ar fresco no espaço museológico e uma outra forma de ver /estar no museu em que é possível a fruição da arte num espaço de lazer, de ócio, de introspeção e retrospeção.

Influência da adição de cálcio nas propriedades de pastas geopoliméricas destinadas a cimentação de poços de petróleo

Nowadays, the search for new technologies that are able to follow the upcoming challenges in oil industry is a constant. Always trying properties improvements of the used materials, looking for the best performance and greater life time. Besides the search for technologies that show an improvement of performance, the search for materials environmentally correct along the whole production process. In Oil well cementing, this search for new technologies passes through the development of slurry systems that support these requests and that are also environmentally friendly. In this context, the use of geopolymer slurries is a great alternative route to cementing oil wells. Besides having good properties, comparable to Portland cement slurries, this alternative material releases much less CO2 gas in the production of their root materials when compared the production of Portland cement, which releases tons of CO2. In order to improve the properties of geopolymer slurries has been added Calcium Oxide, as observed in other studies that slurries where the Calcium is present the values of compressive strength is greater. The addition has been realized based in the CaO/SiO2 molar ratio of 0.05, 0.10 and 0.15. Have been performed compressive strength tests, thickening time, rheology and fliud loss control test of the slurries, following NBR 9831, as well as the physical chemical characterization of XRD, SEM and TG. Has been observed in most of the tests the slurries follow a tendency until the ratio of 0.10, which inverses in the ratio 0.15. This behavior can be explained by two phenomena that occur simultaneously, the first one is the break of the polymer chains and a consequent increase in molucules mobility, which prevails until the ratio of 0.1, and the second is possible approach of the chains due to the capacity of the calcium ions stabilize the charges of two different aluminum. There is only one linearity in the mechanical behavior that can be attributed to the appereance of the C-S-H phase. Based on this, it is concluded that the phenomenon of breaking the polymer chains predominates until the ratio of 0.1, causing an increase of the filtrate volume, lower rheological parameters and increasing thickening time. From the ratio of 0.15 the approach of the chains predominates, and the behavior is reversed

O estudo da luz, cor e matéria como protagonistas no projecto de um centro de investigação do mármore no antigo Convento de São Paulo em Vila Viçosa

Dissertação de Mestrado para a obtenção do grau de Mestre em Arquitectura com Especialização em Interiores, apresentada na Faculdade de Arquitectura da Universidade Técnica de Lisboa.

O detalhe como expressão das ideias de projecto

Dissertação de Mestrado para a obtenção do grau de Mestre em Arquitectura de Interiores, apresentada na Faculdade de Arquitectura da Universidade Técnica de Lisboa.

Relatório final de estágio realizado na Escola Básica Integrada Rainha Dona Leonor de Lencastre no ano letivo 2011-2012

Como parte integrante do 2º ano de Mestrado em Ensino da Educação Física nos Ensinos Básico e Secundário da Faculdade de Motricidade Humana, o presente relatório tem como finalidade analisar o processo de estágio pedagógico desenvolvido no ano letivo 2012/2013 na Escola Básica Integrada Rainha Dona Leonor de Lencastre, localizada em S. Marcos, concelho de Sintra. Este estágio tem em vista a preparação para a função docente. Todo o processo teve como referência o Guia de Estágio Pedagógico 2012/2013 onde se encontram especificados os objetivos a atingir nas quatro áreas inerentes ao processo de estágio: Organização e Gestão do Ensino e da Aprendizagem (Área 1), Inovação e Investigação Pedagógica (Área 2), Participação na Escola (Área 3) e Relação com a Comunidade (Área 4). Em relação a cada uma destas áreas será realizada uma aprofundada reflexão sobre as principais dificuldades sentidas, as estratégias utilizadas para a sua superação e os contributos finais de todo este ciclo de aprendizagem para mim enquanto professora. Em último lugar será apresentada uma reflexão global acerca de todo o processo formativo salientando as principais etapas desta longa aprendizagem e quais aquelas que considerei mais enriquecedoras para o meu futuro enquanto docente.

Redefinição de uma metodologia de projecto à luz de uma estrutura fenomenológica

Dissertação de Mestrado para obtenção do grau de Mestre em Arquitectura, apresentada na Universidade de Lisboa - Faculdade de Arquitectura.

Sobre projetos, palavras e imagens: relacionando textos e desenhos nos trabalhos finais de graduação em arquitetura e urbanismo

This research continues the current debate about the role of the images and the words in the architectural design persuasion, where we emphasize the increasing valuation of written documents (FORTY, 2004; MARKUS; CAMERON, 2002), the seduction for the graphical representation (DURAND, 2003) and the rhetorical effects of the graphical and textual resources (TOSTRUP, 1999). Based on these quarrels, we look for verify in the graduate final projects the relation between the design texts and images. From the PROJEDATA, database of the PROJETAR research group (UFRN), we selected the final projects of two brazilians universities, UFRN and USP, that in a first analysis, they had shown as ideal types of two distinct design presentation models, respectively: texts and drawings in separated documents, or combined in an only support. Based on Markus explanation about the function and the content of the texts, on the Durand perspective with regard to graphical representation uses and on Tostrup point of view concerning the rhetorical potential of texts and drawings, we analyze, in a set of 25 projects, how the students relate the textual and imagetical speeches. For this, we related the focus of each speech, in order to verify the possible coherence between both. We conclude that in the model of USP final project the coherence between the texts and the drawings is clearer than in the model adopted in UFRN

Visitabilidade-vivenciabilidade em assentamentos informais : um estudo da acessibilidade de percursos urbanos no Conjunto Santa Terezinha em Fortaleza-CE

This research approaches the issue of accessibility in informal settlements, seeking for the challenges and limits defined by informal urban settings, about the application of accessibility parameters. Take the empirical universe as the Conjunto Santa Terezinha, located in Fortaleza- Ce. Initially, the study presents a reflection about the housing issue in Brazil and the informal settlementes in view of the Right to the City. In this sense, the main references are, the works of Suzanne Pasternak (2008), Nabil Bonduki (1998) and Erminia Maricato (1996-97), among others. Follows with the discussion of the concepts and classifications of this type of settlement, making a content analysis of legislation and regulations relating to accessibility and proposed the discussion of the accessible route as the right strategy for the city. In another step, the methodology of 'walking together' created by Dischinger (2000) was applied in a passage previously chosen, which the researcher follows the disabled person during the journey through city making records like photos and video. The comments and perceptions are compared to the spatial analysis of urban morphology, made from the method of Del Rio (1990) and Panerai (2006), and the parameters of NBR 9050. Knowledge of the area is enriched by the methodology of the production of space made by Henri Lefebvre in his book 'The production of space' (1974) with these categories: space conceived, perceived and lived. Another key reference of this author it s the book 'The Right to the City' (991), which allowed in-depth reflections on the social function of town. In conclusion, the study finds that to guarantee a minimum access conditions in informal sittlements it´s necessary to know the specifics of their morphology, their relations and urban practices in view of the visitability- experiencebility, describing it as complementary concepts

Natureza morta...edifício com vida: uma arquitetura sustentável para o Serviço de Verificação de Óbitos

Sustainability in buildings, while reducing the impact on the environment, contributes to the promotion of social welfare, to increase the health and productivity of occupants. The search for a way of build that meets the aspirations and development of humanity without, however, represent degradation of the environment, has become the great challenge of contemporary architecture. It is considered that the incorporation of principles that provide a sustainable building with careful choices of design solutions contribute to a better economic and thermal performance of the building, as well as functional and psychological comfort to its users. Based on this general understanding, this paper presents an architecture project aimed to health care whose the solutions adopted follow carefully the relevant legislation and sets his sights on the theme of sustainability. The methodology began with studies on the themes of verification service of deaths, sustainability and those application in construction developed through research in academic studies and analysis of architectural projects, using them like reference for the solutions adopted. Within the project analysis was performed a visit to the verification service of deaths in the city of Palmas in Tocantins, subsidizing information that, plus the relevant legislation, led to functional programming and pre-dimensional of the building to be designed. The result of this programming environments were individual records with information from environmental restrictions, space required for the development of activities, desirable flow and sustainability strategies, that can be considered as the first product of relevance of the professional master's degree. Finally we have outlined the basic design architecture of a Verification Service of Death SVO/RN (in portuguese), whose process of projecting defined as a guiding line of work four points: the use of bioclimatic architecture as the main feature projectual, the use of resources would provide minimal harm to the environment, the use of modulation and structure to the building as a form of rationalization and finally the search for solutions that ensure environmental and psychological comfort to users. Importantly to highlight that, besides owning a rare theme in literature that refers to architectural projects, the whole project was drawn up with foundations in projective criteria that contribute to environmental sustainability, with emphasis on thermal performance, energy efficiency and reuse of rainwater

Richard Serra

Dissertação de Mestrado para obtenção do grau de Mestre em Design de Moda, apresentada na Universidade de Lisboa - Faculdade de Arquitectura.

Da curiosidade aos saberes: um projecto de (trans)formação contínua: relatório final

Pretendeu-se com este trabalho apresentar o percurso formativo, inserido no Mestrado de Educação Pré-Escolar, realizado durante o ano lectivo 2010/2011. O caminho percorrido para a concretização deste relatório final foi pautado por imensos momentos de análise, reflexão e problematização das práticas que desenvolvemos como profissionais de educação de infância, práticas essas centradas em metodologias participtivas. Reveste-se também de um intenso questionamento sobre a avaliação, cuja preocupação central nos transporta para a incessante procura de uma alternativa para a avliação, promovendo momentos de crescimento, aprendizagem e desenvolvimento pessoal e profissional.

Projecto de reintegração do Mosteiro S. Dinis

Dissertação para obtenção do grau de Mestre em Arquitectura, apresentada na Universidade de Lisboa - Faculdade de Arquitetura.