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Name
Repositório do LNEG
Type
Institutional Repository
Items
2421 Publications
Compatibility
OpenAIRE 3.0 (OA, funding)
OAI-PMH
http://repositorio.lneg.pt/oai/openaire
More information
Detailed data provider information (OpenDOAR)

 

  • The written stones of the Montesinho Natural Park : where palaeontology meets popular legend

    Deep in the memory of the inhabitants of the region of Montesinho (NE Portugal), there is a legend which talks about the existence of enigmatic pedras escrevidas (="written stones") in the mountains near the village of Guadramil. In the first half of the 20th Century, what used to be considered some kind of rock engravings in quartzite, were studied by archaeologists, which interpreted these signs as a kind of very old (and unknown) pre-Roman writing. A modern geological mapping o...

    O Solar Fotovoltaico de Concentração

    Os sistemas fotovoltaicos de concentração (CPV) utilizam espelhos ou lentes para concentrar a radiação solar em células fotovoltaicas. O objectivo é baixar o custo da produção de electricidade destes sistemas ao substituir área de células ou de módulos fotovoltaicos, em geral de custo elevado, por ópticas de concentração de menor custo.São sistemas que podem atingir eficiências superiores a 25% na produção de electricidade a partir de Energia Solar, e atingir valores da ordem dos 75% de efici...

    Manufacture of cordierite foams by direct foaming

    Open cell cordiereti fosms were prepared by a direct foaming two-component polyurethane (PUR)/ceramic system. Throught optimization of several experimental parameters such as contents of catalysts and ceramic cordiereti precursor, as well as plasticizer presence, foams with porosites 85-95&% and densities ranging from 130-410 kg/m3 were obtained. Thse foams characteristics make them attractive to be used as catalyst supports. The new two-component PUR/ceramics system developped allows the hig...

    Carvão da Bezerra (Porto de Mós) : "apropriado na conducção do fôgo nas locomotivas"

    Resumo de comunicação apresentada nas jornadas realizadas na Batalha - Porto de Mós, de 11 a 13 de Setembro de 2014

    Património geológico no litoral de Peniche : geomonumentos a valorizar e divulgar

    A paisagem litoral que se observa, ao longo da sinuosa costa de Peniche, é de uma monumental beleza estética. Esta espectacularidade paisagística resultou da enorme variedade de elementos, ambientes e processos de natureza geológica-geodiversidade, os quais constituem documentos que testemunham a história da Terra. Ao caminhar pela costa de Peniche observam-se sítios, estruturas ou objectos geológicos, bem delimitados geograficamente que, pela sua favorável localização, conteú...
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