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Integração da disciplina de Sistemas Digitais na plataforma PmatE

This article approaches the process of integration of a Digital Systems course in the Mathematical Education Project platform, developed to support computer aided education.The paper describes how the project appeared and its scope,identifies the needed requirements needed before actualcontent production, describes the intrinsic procedures of theorganization, development areas, used technologies and alsosome of...

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Helium and neon isotopes in São Miguel island basalts, Azores Archipelago: New ...

Lavas from the São Miguel Island, Azores Archipelago, have peculiar isotopic compositions, including radiogenic lead and strontium and un-radiogenic neodymium. The peculiar isotopic trend of São Miguel is evident in the lead-lead diagram where both 207Pb/204Pb and 208Pb/204Pb ratios are high for a given 206Pb/204Pb ratio compared to other oceanic island basalts. This signature is unique among OIBs and is partic...

Hydrogeochemical survey of CO2 geological leakage using noble gases: Applicatio...

Significant natural CO2 emissions have been measured across the caldera of Furnas (São Miguel Island, Azores) allowing us to consider the area as a CO2 leakage analogue. During two field trips, we have collected twenty springs in purpose to measure CO2 contents (Dissolved Inorganic Carbon and "13C) and noble gas isotopic compositions (He and Ne) and for seventeen water samples, major ions chemistry. The correct...

He and Ne isotopic ratios from the Terceira Rift (Azores): Constraints on the b...

We present He and Ne isotopic data from subaerial and submarine samples collected along the Terceira Rift. Graciosa Island as well as the western end of S. Miguel Island and D. João de Castro Bank display 4He/3He ratios similar to those observed along the MAR segments located to the north of the Azores Triple Junction area. Conversely, samples from the south Hirondelle Basin display a 4He/3He ratio similar to t...

Changes in food chains in the context of globalization

This article highlighting the political and ideological conditions necessary for globalization and the role of the technologies associated with this process is an attempt to explain the nature and dynamics of change in food chains. In this text, a political-economic perspective is employed, relying on well-known theoretical and empirical examples that abound in the literature about globalization of food, and on...

Desenvolvimento rural: problemas e desafios. o Estado, o mercado e a sociedade ...

Projecto "Nascentes para a vida" /EPAL

Financially driven globalization impacts on the fight against hunger and poverty

Razões isotópicas de He e Ne ao longo do Rift da Terceira: implicações para a f...

Neste trabalho foram obtidas razões isotópicas de He e Ne em fenocristais de olivina separados a partir de lavas amostradas no arquipélago dos Açores e, em particular, ao longo da fronteira de placas designada por Rift da Terceira. Nele são apresentados os primeiros dados isotópicos de Ne obtidos para lavas basálticas das ilhas de S. Miguel, da Graciosa e do Faial. De igual modo, merecem destaque os dados de ga...

He and Ne isotopic ratios along the Terceira Rift: implications for the Azores ...

Noble gas data (He and Ne) on olivine phenocrysts obtained from Azores’ lavas sampled along the Terceira Rift will be presented in this work. The Terceira Rift is considered as one of the slowest spreading system in the world (Vogt & Jung, 2004). Lava samples were collected inland at S. Miguel, Terceira, Graciosa, Pico and Faial Islands as well at sea at D. João de Castro Bank and south Hirondelle basin, the la...