3122043 documents found, page 46104 of 312205

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Stochastics, Time Domain Models and Pontryagin Maximum Priciple for a Two Body ...

Cândido, José J.; Justino, Paulo Alexandre

In this study a stochastic model to describe the behaviour of an articulated system is developed.Optimal mechanical damping and spring coefficients are computed. Probability density functions are defined for the relevant parameters that characterize the device behaviour. For these parameters and for different sea state conditions the probability density functions are found and the articulated system is characte...

Date: 2009   |   Origin: Repositório do LNEG

Hydrodynamics of triangular-grid arrays of floating point-absorber wave energy ...

Vicente, Pedro C.; Falcão, António F. de O.; Gato, L.M.C.; Justino, Paulo Alexandre

It may be convenient that dense arrays of floating point absorbers are spread-moored to the sea bottom through only some of their elements (possibly located in the periphery), while the other array elements are prevented from drifting and colliding with each other by connections to adjacent elements. An array of identical floating point absorbers located at the grid points of an equilateral triangular grid is c...

Date: 2009   |   Origin: Repositório do LNEG

Monitoring Results of a Small Scale CHCP System

Mendes, J. Farinha; Cardoso, João P.; Coelho, Ricardo; Costa, João P.; Fernández, David; Silva, António R.; Morgado, Miguel; Adão, Pedro

A small scale trigeneration system for combined heat, cold and power production was developed and installed at the Laboratório Nacional de Energia e Geologia, I.P. campus in Lisbon, Portugal. This system is one of the twelve experimental trigeneration systems being developed and tested across Europe within the PolySMART project. The CHCP system main constituents are a purpose made CHP prototype with an estimate...

Date: 2010   |   Origin: Repositório do LNEG

Contribuição para o conhecimento das argilas da Bobonaro Scaly Clay e suas pote...

Lisboa, Jose; Carvalho, Jorge; Oliveira, Álvaro; Carvalho, C.; Grade, José

Efectuou-se o levantamento geológico de uma área de afloramento da formação Bobonaro Scaly Clay (Miocénico médio) em Venilale. A mineralogia das amostras revelou argilas constituídas por ilite, caulinite, quartzo e esmectite, por ordem decrescente de teores; em percentagem acessória ocorrem feldspato potássico, plagioclase, gesso e hematite. Não existem variações significativas na composição mineralógica das am...

Date: 2003   |   Origin: Repositório do LNEG

Calcários ornamentais de Beheda, Timor Leste

Carvalho, Jorge; Lisboa, Jose

Date: 2003   |   Origin: Repositório do LNEG


Transient inversion during the opening stage of the Wilson cycle, Sardic phase,...

Romão, José; Coke, Carlos; Dias, Ruben Pereira; Ribeiro, António

Date: 2003   |   Origin: Repositório do LNEG

Characterization of chars produced in the co-pyrolysis of different wastes: dec...

Bernardo, Maria; Lapa, Nuno; Gonçalves, M.; Barbosa, Rui; Mendes, Benilde; Pinto, Filomena

The present work is devoted to the study of chars obtained in the co-pyrolysis of plastics, biomass and tyres wastes. The chars were extracted with several organic solvents in order to assess the more efficient in redicing the organic load of trhe chars and, therefore their toxicity. The ability of each selected extractant to remove toxic pollutants was evaluated by comparing the extracts yield and thoroughly c...

Date: 2010   |   Origin: Repositório do LNEG

Microfauna, ostracodos, foraminíferos, do Caloviano-Oxfordiano da sondagem Verm...

Cabral, Maria Cristina; Azerêdo, Ana Cristina; Ramalho, Miguel Magalhães

Date: 2003   |   Origin: Repositório do LNEG

Palinoestratigrafia da sequência litológica imbricada da Mina de Neves-Corvo, i...

Oliveira, José Tomás; Pereira, Zélia; Pacheco, Nelson

Date: 2003   |   Origin: Repositório do LNEG

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