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Browsing by Author "Alves, Paulo"

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  • A malnutrição associada à doença e as suas repercussões em Portugal
    Publication . Marinho, Anibal; Lopes, Ana; Sousa, Gabriela; Antunes, Henedina; Fonseca, Jorge; Mendes, Lino; Carvalho, Mamede de; Veríssimo, Manuel Teixeira; Carvalho, Nuno; Alves, Paula; Alves, Paulo
    A malnutrição associada à doença é frequente do ponto de vista clínico, apresentando elevada morbilidade, mortalidade e impacto na qualidade de vida, em especialidades como a medicina interna, a oncologia, a neurologia, a gastroenterologia e a pediatria, entre outras. Estudos realizados em Portugal estimam existirem cerca de 40% de doentes em risco nutricional à data da admissão hospitalar, dependendo do estadio da doença e do grau/severidade. O custo da hospitalização destes doentes, é cerca de 20% superior ao dos doentes com o mesmo grupo de diagnóstico homogéneo, mas sem risco nutricional associado. No nosso país, o acesso dos doentes malnutridos a avaliação, aconselhamento e tratamento nutricional adequados ainda é limitado, mesmo em ambiente hospitalar. Um conhecimento detalhado da malnutrição associada à doença nas referidas especialidades, permitiria uma melhor caracterização da situação em Portugal, e permitiria estabelecer uma estratégia de intervenção clínica e terapêutica, para melhorar este panorama e as suas consequências no nosso país.
    2019-03Journal article Open access Show more
  • The Portuguese national seismic network: products and services
    Publication . Carrilho, Fernando; Custodio, Susana; Bezzeghoud, Mourad; Oliveira, Carlos; Marreiros, Célia; Vales, Dina; Alves, Paulo; Pena, Areosa; Madureira, Guilherme; Escuer, Maria; Silveira, Graça; Corela, Carlos; Matias, Luis; Silva, Matilde; Veludo, Idalina; Dias, Nuno; Loureiro, Afonso; Borges, J. F.; Caldeira, Bento; Wachilala, Piedade; Fontiela, Joao
    Portugal, located in the southwest region of the Eurasian plate, has been affected by several destructive earthquakes throughout its history, the most well-known being the 1755 Great Lisbon earthquake. The seismicity of the territory, both in the mainland and in the Azores and Madeira islands, has prompted the continuous development of seismic monitoring, from the first known macroseismic inquiry, following the 1755 Great Lisbon earthquake, to the current state-of-the-art seismic network. Once scattered in separate efforts, at present, most seismic stations in Portugal relay its data to a common data center, at Instituto Português do Mar e da Atmosfera, where data are automatically processed for the downstream generation of both manually revised and automatically generated products and services. In this article, we summarize the evolution of the permanent seismic network, its current status, the products and services that are publicly available, a recent effort of rapid deployment of a dense network following a mainshock, and state-of-the-art ocean-bottom seismometer developments.
    2021-05Journal article Restricted access Show more
  • The Tagus River delta landslide, off Lisbon, Portugal. Implications for Marine geo-hazards
    Publication . Terrinha, Pedro; Duarte, Henrique; Brito, Pedro; Noiva, João; Ribeiro, Carlos; Omira, Rachid; Baptista, Maria Ana Carvalho Viana; Miranda, Miguel; Magalhaes, Vitor; Roque, C.; Rosa, Marcos; Alves, Paulo; Teixeira, Francisco; Tagusdelta Cruise Team
    The stratigraphy of the Tagus river ebb-tidal delta off Lisbon (Portugal) is investigated using high resolution multichannel seismic reflection profiles with the purpose of searching for sedimentary or erosive features associated with landslides. The Tagus delta is sub-divided in two prograding seismic units of 17 ky to 13 ky and 13 ky to Present based on the calibration of seismic lines using gravity and box-cores in the Tagus pro-delta. We report the existence of a buried landslide with 11 km of length, 3.5 km of width and a maximum thickness of 20 m that accounted for the collapse of half of the upper unit of the Tagus river delta front in Holocene times. The non-collapsed half of the delta front contains extensive shallow gas of still unknown origin and nature. An estimated age of similar to 8 ky BP for the Tagus delta landslide is proposed based on stratigraphic correlation. The trigger mechanisms of the newly identified Tagus landslide are discussed as well as of the several landslides also found in the lower delta unit. These findings present a first step towards a future assessment of the susceptibility of the nearby coastal areas and the off-shore infrastructures to hazards related to such large collapses.
    2019-10Journal article Restricted access Show more