Encontrados 47 documentos, a visualizar página 1 de 5
Colestase intra-hepática da gravidez: fator de risco para síndrome de dificulda...
Russo, Tânia; Berenguer, Alberto; Fontes, Dora; Scortenschi, Ecaterina; Santos, Isabel; Matos, Cristina; Tomé, TeresaIntrodução: A colestase intra-hepática da gravidez está associada a complicações fetais e neonatais graves, incluindo síndrome de dificuldade respiratória. Tem sido recomendada terapêutica materna com ácido ursodesoxicólico e antecipação do parto para reduzir o risco de complicações. Os objetivos foram determinar a associação entre colestase intra-hepática da gravidez e síndrome de dificuldade respiratória neon...
Effect of light on the production of bioelectricity and added-value microalgae ...
Gouveia, L.; Neves, Carole; Sebastião, Diogo; Nobre, Beatriz P.; Matos, Cristina T.This study demonstrates the simultaneous production of bioelectricity and added-value pigments in a Photosynthetic Alga Microbial Fuel Cell (PAMFC). A PAMFC was operated using Chlorella vulgaris in the cathode compartment and a bacterial consortium in the anode. The system was studied at two different light intensities and the maximum power produced was 62.7 mW/m2 with a light intensity of 96 lE/(m2 s). The re...
Chemical and biological-based isoprene production: Green metrics
Morais, Ana Rita; Dworakowska, Sylwia; Reis, Alberto; Gouveia, L.; Matos, Cristina T.; Bogdal, Dariusz; Bogel-Lukasik, R.Green metrics is a methodology which allows the greenness of either new or already existing processesto be assessed. This paper is a part of a special issue devoted to green metrics in which this methodologyis applied to different processes to assess bio and petrochemical routes. In this work, green metrics wereused as a tool to validate and compare the petrochemical and biological processes of isoprene product...
An exploratory study on the influence of socio-demographic characteristics on w...
Matos, Cristina; Teixeira, Carlos A.; Bento, Ricardo; Varajão, João; Bentes, IsabelAny strategy of water demand management needs the collaboration of the population involved and so it is important to know how characteristics as residence area, number of residents, presence/absence of children/elders, income level, and educational level, among others, may influence the use of water. Empirical studies that quantify relationship between socio-demographic factors and the water end use patterns in...
Infecção por Staphylococcus Aureus
Viegas, Vera; Amaral, Luís; Matos, Cristina; Nascimento, OdíliaIntrodução: O Staphylococcus aureus é um agente etiológico importante de infecções nos recém-nascidos, particularmente nos pré-termos. Objectivos: Avaliar os principais factores de risco, as formas clínicas de apresentação e a terapêutica instituída na infecção por Staphylococcus aureus nos recém-nascidos. Material e métodos: Estudo descritivo e retrospectivo de uma coorte de recém-nascidos com hemoculturas pos...
Green metrics evaluation of isoprene production by microalgae and bacteria
Matos, Cristina T.; Gouveia, L.; Morais, Ana Rita; Reis, Alberto; Bogel-Lukasik, R.Isoprene is a key intermediate compound for the production of synthetic rubber and adhesives and is also used as a building block in the chemical industry. Traditionally, isoprene is obtained from crude oil during the refinery process. Nevertheless, plants and animals are also able to synthesize this important compound. This work compares two renewable approaches for isoprene production: by photosynthetic organ...
Nannochloropsis sp. biomass recovery by Electro-Coagulation for biodiesel and p...
Matos, Cristina T.; Santos, Marta; Nobre, Beatriz P.; Gouveia, L.Biofuel production from microalgal biomass could be an alternative solution to conventional biofuels typically dependent on food and high land/water demanding crops. However, the economic and energetic viability of microalgal biofuels is limited by their harvesting processes. The finding of innovative, low cost and efficient harvesting method(s) is imperative. In this study, the Electro-Coagulation (EC) was stu...
Microalgae biomass harvesting by electrocoagulation
Matos, Cristina T.; Santos, Marta; Nobre, Beatriz P.; Gouveia, L.The use microalgae biomass for the production of biofuels has received great attention in the last decades. Microalgae biofuels could be important alternative to conventional biofuels since microalgae could be produced at high rates without the need of neither arable land, potable water or competition with food. However, the high energy intensive harvesting processes are limiting the commercial production of mi...
Biocombustíveis: uma oportunidade ou um problema para Portugal
Gírio, Francisco M.; Bogel-Lukasik, R.; Matos, Cristina T.; Oliveira, A. C.; Silva, Luís ManuelApresenta-se nesta curta comunicação a problemática referente à introdução dos biocombustíveis nos transportes em Portugal na sequência da transposição para a legislação nacional das diferentes diretivas europeias (2003 e 2009). A produção de biocombustíveis em território nacional tem vindo a aumentar na sequência da política nacional de promoção dos mesmos embora as matérias-primas utilizadas (oleaginosas) sej...
Application of green zero-valent iron nanoparticles to the remediation of soils...
Machado, S.; Stawiński, W.; Slonina, P.; Pinto, A. R.; Grosso, J. P.; Nouws, Henri P. A.; Albergaria, José Tomás; Delerue-Matos, CristinaZero-valent iron nanoparticles (nZVIs) are often used in environmental remediation. Their high surface area that is associated with their high reactivity makes them an excellent agent capable of transforming/degrading contaminants in soils and waters. Due to the recent development of green methods for the production of nZVIs, the use of this material became even more attractive. However, the knowledge of its ca...
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