Encontrados 8 documentos, a visualizar página 1 de 1

Ordenado por Data

Effect of syngas composition on hydrogen permeation through a Pd–Ag membrane

Pinto, Filomena; André, Rui Neto; Franco, Carlos; Carolino, Carlos; Gulyurtlu, Ibrahim

Hydrogen separation from a syngas mixture with different compositions was studied by using a Pd–Ag membrane. The effect of temperature (from 300 C to 600 C) and of relative pressure (from 0.2 MPa to 0.5 MPa) was studied. In general, rises of both these parameters allowed increasing H2 permeate flux. The Pd–Ag membrane showed to have a great selectivity, as when inlet gas mixture contained different compositio...

Data: 2013   |   Origem: Repositório do LNEG

Modelação de um sistema de conversão de energia das ondas

André, Rui Alexandre Aranda

Tese de mestrado integrado. Engenharia Mecânica. Faculdade de Engenharia. Universidade do Porto. 2010


Cerebral venous thrombosis: retrospective analysis of 49 cases.

Santos, Gonçalo Roque; André, Rui; Pereira, Sara Leonor; Parreira, Tiago; Machado, Egídio

Cerebral Venous Thrombosis (CVT) is a rare and potentially life-threatening disease, accounting for about 0.5% of stroke cases. However, it is believed to be an underdiagnosed condition. Early diagnosis requires a high degree of suspicion and appropriate use of imaging modalities.Imagiological and clinical characterization of CVT cases diagnosed at our hospital from 2004 to 2007.This study was a retrospective, ...

Data: 2011   |   Origem: Acta Médica Portuguesa

Devic's disease.

Peixoto, Irina; Ermida, Vera; Torres, Ana; Aparício, Maria Inês; André, Rui; Caldas, Jorge

Devic's disease, also known as Neuromyelitis Optica, is a demyelinating disease of the central nervous system, with selective involvement of the spinal cord and optic nerves. The authors describe a clinical case of acute myelitis, initially approached in the context of a nonspecific syndrome gripal, with subsequently sudden bilateral amaurosis, which leads to the diagnosis hypotesis of Devic's disease, a diseas...

Data: 2010   |   Origem: Acta Médica Portuguesa

Comparison of a pilot scale gasification installation performance when air or ...

Pinto, Filomena; Gulyurtlu, Ibrahim; André, Rui Neto; Lopes, M. Helena; Franco, Carlos

Data: 2010   |   Origem: Repositório do LNEG

Gasification study of cynara cardunculus to produce hydrogen rich gas

Franco, Carlos; Lopes, M. Helena; Pinto, Filomena; André, Rui Neto; Gulyurtlu, Ibrahim; Cabrita, Isabel

The need to substitute fossil fuel feedstocks with endogeneous biomass to produce energy with lower environmental impact makes necessary to develop innovative and technologically more advanced processes for energy production. Gasification of Cynara cardunculus L. (cardoon) alone and mixed with Eucalyptus was carried out in a bench scale fluidized bed gasifier to study the influence of operating parameters that ...

Data: 2009   |   Origem: Repositório do LNEG

Prediction of H2S and HCl formation during RDF and co-gasification in fluidized...

Gulyurtlu, Ibrahim; Pinto, Filomena; Lopes, M. Helena; André, Rui Neto; Dias, Mário; Cabrita, Isabel

Most solid fuels contain S and Cl and during their gasification, the formation of pollutants such as H2S and HCl becomes inevitable, however, a better understanding of the mechanism involved in their formation and subsequent destruction during the process could help to define operating conditions and to achieve synergy during co-gasification to minimize their emissions. The formation of these pollutants along w...

Data: 2008   |   Origem: Repositório do LNEG

Desenvolvimento de processos de co-gasificação de carvão com resíduos

André, Rui Manuel Neto

Portugal e a maioria dos países da União Europeia são altamente dependentes da importação de fontes de energia que permitam manter os níveis de conforto e de qualidade de vida a que a sua população se habituou. Em virtude do tempo de vida limitado das reservas de petróleo, principal combustível fóssil utilizado, e face aos problemas políticos, sociais e económicos dos principais países produtores deste combustí...


8 Resultados

Texto Pesquisado

Refinar resultados

Autor











Data








Tipo de Documento





Recurso





Assunto















    Financiadores do RCAAP

Fundação para a Ciência e a Tecnologia Universidade do Minho   Governo Português Ministério da Educação e Ciência Programa Operacional da Sociedade do Conhecimento União Europeia