Encontrados 78 documentos, a visualizar página 1 de 8
Characterization and electrochemical behaviour of nanostructured calcium samari...
Barrocas, B.; Sério, S.; Rovisco, A.; Nunes, Y.; Sá, A. I. Correia de; Pereira, M. I. da Silva; Jorge, M. E. MeloCa1-xSmxMnO3(0 . x . 0.4) films were successfully fabricated on Indium Tin Oxide (ITO) coated quartzglass substrates by radio frequency magnetron sputtering technique (RF- magnetron sputtering) fromcompacted nanosized powder targets, and subsequent annealing at 800.C in air, for 6 h. X-ray diffrac-tion shows a pure typical perovskite phase for x . 0.1. Scanning electron microscopy and atomic forcemicroscopy r...
Avulsão traumática da veia supra-hepática esquerda: interdisciplinaridade funci...
Sousa, M; Gomes, A; Nunes, VAs lesões vasculares traumáticas associam-se a elevada letalidade. Lesões da veia cava suprahepática e veias suprahepáticas são descritas nalgumas séries com 100% de mortalidade. Apresentamos o caso clínico de um doente do sexo masculino, 31 anos de idade, vítima de acidente de viação. À admissão no serviço de urgência apresentava-se eupneico, hemodinamicamente estável com Glasgow Coma Score (GCS)=15, com abdóm...
Prevalence and classification of rhinitis in the elderly: a nationwide survey i...
Morais-Almeida, M; Pite, H; Pereira, AM; Todo-Bom, A; Nunes, C; Bousquet, J; Fonseca, JABACKGROUND: Nationwide epidemiologic data on rhinitis in the elderly do not exist. This study aimed to estimate the prevalence of rhinitis in the population aged 65 years or above in mainland Portugal and to characterize and classify rhinitis in this age group. METHODS: Cross-sectional, nationwide, population-based survey of citizens aged 65 years or above, living in mainland Portugal. Current rhinitis (CR) was...
Aerobiologia do pólen de Olea europaea L. em Portugal Continental
Caeiro, E.; R. Ferro; Brandao, R. M.; Trindade, Costa; Lopes, M.L.; Gaspar, A.; Nunes, C.; Todo-Bom, A.; Oliveira, J.F.; Mario Morais-AlmeidaIntrodução: O pólen de oliveira (Olea europaea L.) constitui uma das fontes de aeroalergenos mais importantes na Europa Mediterrânica e em Portugal. Objectivos: Analisar a aerobiologia do pólen de Olea em Portugal Continental. Métodos: No estudo utilizaram-se os dados horários e diários das monitorizações de pólen de Olea efetuadas entre 2002 e 2012 de cinco estações de monitorização continentais da Rede Portug...
Controlador de Memória Dinâmica para o μP68030
N. Borges Carvalho; R. Vieira Silva; A. Nunes Cruz; Apresenta-se o projecto dum controlador, que implementa a interface do μP68030 a uma memória dinâmica. A memória permite o acesso de bytes, words e longwords, suportando ainda um modo de acesso rápido (‘Nibble’). Para aumentar a confiabilidade (‘reliability’), a interface inclui ainda um circuito de detecção e corre...
Excess mortality among the elderly in 12 European countries, February and March...
Mazick, A.; Gergonne, B.; Nielsen, J.; Wuillaume, F.; Virtanen, M.J.; Fouillet, A.; Uphoff, H.; Sideroglou, T.; Paldy, A.; Oza, A.; Nunes, B.In February and March 2012, excess deaths among the elderly have been observed in 12 European countries that carry out weekly monitoring of all-cause mortality. These preliminary data indicate that the impact of influenza in Europe differs from the recent pandemic and post-pandemic seasons. The current excess mortality among the elderly may be related to the return of influenza A(H3N2) virus, potentially with a...
Protest attitudes and stated preferences: Evidence on scale usage heterogeneity
Cunha-e-Sá, Maria A.; Nunes, Luis C.; Otrachshenko, VladimirWe contribute to the stated preference literature by addressing scale usage heterogeneity regarding how individuals answer attitudinal questions capturing lack of trust in institutions and fairness issues. Using a latent class model, we conduct a contingent valuation study to elicit the willingness-to-pay to preserve a recreational site. We find evidence that respondents within the same class, that is, with si...
Monitoring strategies for “Ponta da Ferraria e Pico das Camarinhas” geosite (S....
Lima, A.; Nunes, J. C.; Brilha, J. B.This paper presents an ongoing work that is being developed under the scope of a master thesis. “Ponta da Ferraria e Pico das Camarinhas” is a protected area and a geosite with high geological relevance in S. Miguel Island, Azores archipelago, Portugal. Because of its importance for the Azores Geopark geoconservation strategy, a monitoring work has been under development during the last year in order to assure ...
Monitoring geosites : a geoconservation tool at Azores Geopark
Lima, A.; Nunes, João Carlos; Brilha, J. B.The Azores archipelago is located in the North Atlantic and is composed by nine islands and some islets. This archipelago, and the surrounding seafloor, has a remarkable geological heritage of international scientific relevance, which constitutes the basis for the establishment of a geopark that is under evaluation by the European Geoparks Network (EGN). The analysis of the evolution of the conservation status ...
Plasmid DNA recovery from fermentation broths by a combined process of micro- a...
Nunes, José C.; Morão, A.; Nunes, Catherine; Amorim, M. T. Pessoa de; Escobar, I. C.; Queiroz, J. A.Microfiltration and ultrafiltration operations were used in tandem to isolate and purify a 6050 bp plasmid DNA (pDNA). To achieve primary isolation of the plasmid from fermentation broths, immediately after cell lysis, a 0.2 μm microfiltration membrane was selected for solid/liquid separation, which was performed in a diafiltration mode, as an alternative to centrifugation. Then to attain plasmid concentration ...
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