1000 resultados para Porto Maravilha


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Orientador: Jorge Fernando Ferreira Castelo

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Os centros históricos são o resultado de um parque habitacional corrente, com uma grande uniformidade, coerência construtiva e espaços urbanos de modo a proporcionar uma identidade própria. Um dos grandes problemas urbanos são as vastas áreas degradadas do ponto de vista arquitetónico como também social, cultural e económico. Conhecidos os principais problemas dos edifícios de habitação e suas causas, para sua resolução existe necessidade de adaptar o processo de reabilitação tradicional ao conceito de sustentabilidade. Estes dois assuntos conjugados são atualmente emergentes, devido à necessidade de reabilitação do parque habitacional, nomeadamente centros históricos. A casa burguesa do Porto apresenta um elevado grau de degradação, porém apesar de existentes as ações de intervenção que sobre ela reincidem, não são proporcionais à necessidade atual. A cidade do Porto é marcada, maioritariamente, pelas Casas Burguesas, das quais foram executadas segundo padrões de conforto e de utilização da época. É, então, fundamental um estudo pormenorizado da casa burguesa do Porto, avaliando o contexto em que esta se encere (na cidade e na respetiva habitação), os subsistemas construtivos e as praticas de reabilitação.

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The North Atlantic Oscillation (NAO) is an important large-scale atmospheric circulation that influences the European countries climate. This study evaluated NAO impact in air quality in Porto Metropolitan Area (PMA), Portugal, for the period 2002-2006. NAO, air pollutants and meteorological data were statistically analyzed. All data were obtained from PMA Weather Station, PMA Air Quality Stations and NOAA analysis. Two statistical methods were applied in different time scale : principal component and correlation coefficient. Annual time scale, using multivariate analysis (PCA, principal component analysis), were applied in order to identified positive and significant association between air pollutants such as PM10, PM2.5, CO, NO and NO2, with NAO. On the other hand, the correlation coefficient using seasonal time scale were also applied to the same data. The results of PCA analysis present a general negative significant association between the total precipitation and NAO, in Factor 1 and 2 (explaining around 70% of the variance), presented in the years of 2002, 2004 and 2005. During the same years, some air pollutants (such as PM10, PM2.5, SO2, NOx and CO) present also a positive association with NAO. The O3 shows as well a positive association with NAP during 2002 and 2004, at 2nd Factor, explaining 30% of the variance. From the seasonal analysis using correlation coefficient, it was found significant correlation between PM10 (0.72., p<0.05, in 2002), PM2.5 (0 74, p<0.05, in 2004), and SO2 (0.78, p<0.01, in 2002) with NAO during March-December (no winter period) period. Significant associations between air pollutants and NAO were also verified in the winter period (December to April) mainly with ozone (2005, r=-0.55, p.<0.01). Once that human health and hospital morbidities may be affected by air pollution, the results suggest that NAO forecast can be an important tool to prevent them, in the Iberian Peninsula and specially Portugal.

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Esta abordagem à história das cidades do Porto e Bordéus pretende mostrar a identidade entre elas a partir de um elemento comum ao seu desenvolvimento – o vinho. Pontos de contacto existem desde a Idade Média, pelas ligações comerciais à Inglaterra, mas também pela afirmação no seio de ambas as urbes de uma burguesia enriquecida que deixa marcas na cultura, no diálogo entre as cidades e as respectivas áreas de influência.

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A cidade do Porto oitocentista é um espaço de industrialização, modernização, crescimento populacional e urbano, mas é também um espaço de assimetrias económicas e sociais. A era industrial fez aumentar o número de burgueses ricos e criou uma nova classe, o operariado, acabando por gerar uma “cidade escondida” dominada pelos operários, que vivia no mesmo espaço citadino mas ao mesmo tempo era excluída dele, gerando situações de tensão e conflito que se exteriorizarão com grande acuidade nas últimas décadas do século XIX através de manifestações e greves.

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Eugénio de Andrade viveu cinquenta e cinco anos na cidade do Porto e, como ser social, deambulou nos lugares exteriores desta cidade, descobrindo e fazendo descobrir, através dos seus escritos em prosa, a beleza irrecusável de uma cidade pitoresca e inscrita no tempo desde Fernão Lopes até aos escritores mais recentes. A partir desses lugares exteriores, e alimentado por uma experiência de vida e por uma visão artística, ele metamorfoseou os lugares exteriores em lugares íntimos a partir da magia que lhe outorga a palavra poética. Servindo-se da experiência do ser social, o ser criador desce, deste modo, às profundezas da alma e cria um espaço poético cheio de emoções anódinas que purgam as obsessões e as carências do ser social. Assim, e graças à criação poética, os nomes dos lugares do Porto deixam de ser topónimos para serem catalizadores de memórias e de referências. Os espaços geográficos do Porto passam a ser lugares de uma geografia imaginária que as impressões do ser criador suscitam. Depois de sublimar vários espaços da cidade, Eugénio acabou por criar o seu espaço poético no Passeio Alegre onde deixou a sua herança à única herdeira que é a cidade do Porto

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Objectives: To measure the prevalence and severity of dental caries in adolescents of the city of Porto, Portugal, and to assess socioeconomic and behavioural covariates of dental caries experience. Methods: A sample of 700 thirteen-year-old schoolchildren was examined. Results from the dental examination were linked to anthropometric information and to data supplied by two structured questionnaires assessing nutritional factors, socio-demographic characteristics and behaviour related to health promotion. Dental caries was measured using the DMFT index, and two dichotomous outcomes, one assessing the prevalence of dental caries (DMFT>0); the other assessing the prevalence of a high level of dental caries (DMFT=4). Results: Consuming soft drinks derived from cola (irrespective of sugared or diet) two or more times per week, attending a public school, being female and having parents with low educational attainment were identified as risk factors both for having dental caries and for having a high level of dental caries. Conclusion: Caries levels were positively associated with frequency of intake of sweetened foods and drinks.

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The largest earthquake observed in the stable continental interior of the South American plate occurred in Serra do Tombador, Mato Grosso state - Brazil, on January 31,1955 with a magnitude of 6.2 m(b). Since then no other earthquake has been located near the 1955 epicentre. However, in Porto dos Gauchos, 100 km northeast of Serra do Tombador, a recurrent seismicity has been observed since 1959. Both Serra do Tombador and Porto dos Gauchos are located in the Phanerozoic Parecis basin. Two magnitude 5 earthquakes occurred in Porto dos Gauchos, in 1998 and 2005, with intensities up to VI and V, respectively. These two main shocks were followed by aftershock sequences lasting more than three years each. Local seismic stations have been deployed by the Seismological Observatory of the University of Brasilia since 1998 to study the ""Porto dos Gauchos"" seismic zone (PGSZ). A local seismic refraction survey was carried out with two explosions to help define the seismic velocity model. Both the 1998 and 2005 earthquake sequences occurred in the same WSW-ENE oriented fault zone with right-lateral strike-slip mechanisms. The epicentral zone is in the Parecis basin, near its northern border where there are buried grabens, generally trending WNW-ESE, such as the deep Mesoproterozoic Caiabis graben which lies partly beneath the Parecis basin. However, the epicentral distribution indicates that the 1998 and 2005 sequences are related to a N60 degrees E fault which probably crosses the entire Caiabis graben. The 1955 earthquake, despite the uncertainty in its epicentre, does not seem to be directly related to any buried graben either. The seismicity in the Porto dos Gauchos seismic zone, therefore, is not directly related to rifted crust. The probable direction of the maximum horizontal stress near Porto dos Gauchos is roughly E-W, consistent with other focal mechanisms further south in the Pantanal basin and Paraguay. but seems to be different from the NW-SE direction observed further north in the Amazon basin. The recurrent seismicity observed in Porto dos Gauchos, and the large 1955 earthquake nearby, make this area of the Parecis basin one of the most important seismic zones of Brazil. (C) 2009 Elsevier B.V. All rights reserved.

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Receiver functions from small local earthquakes were used to determine sediment thicknesses in Porto dos Gauchos seismic zone (PGSZ), Parecis basin, Amazonian craton, Brazil. The high velocity contrast between basement and sediments (P-wave velocities of 6.1 and 3.0 km/s, respectively) favors the generation of clear P-to-S converted phases (Ps) seen in the radial component, and also S-to-P conversions (Sp) seen in the vertical component. A reference 10 velocity model determined with shallow refraction experiment in PGSZ helped to convert Ps P time differences to basement depths at 15 stations deployed for aftershocks studies. The results of receiver function integrated with the shallow refraction reveal that the basement depths in the PGSZ increases from the basin border in the north up to about 600 m depth in the south. The basement topography, however, does not vary smoothly and a basement high with a steep topography was detected near the epicentral area. A 400 m elevation difference within 1.7 km distance suggests a possible border fault of a buried graben. This feature seems to be oriented roughly WSW-ENE and could indicate basement structures related to the seismicity of the Porto dos Gauchos Seismic Zone. (C) 2011 Elsevier Ltd. All rights reserved.