Dissertação para obtenção do Grau de Mestre em Engenharia Electrotécnica e de Computadores ; A electrofiação é um método altamente versátil para processar soluções de polímeros ou de outros fluidos complexos e transformá-los em fibras cujo diâmetro varia nas escalas micrométrica e nanométrica[1]. Embora a electrofiação se baseie num princípio simples, a sua implementação é bastante complexa dado que depend...
Este trabalho tem por objectivo fazer uma revisão de alguns conceitos sobre a lipoperoxidação dos óleos e gorduras alimentares no uso quotidiano, bem como as implicações envolvidas nos processos de aquecimento durante a fritura e reutilização.
Rhabdomyosarcoma is a malignant tumor occurring more frequently in the childhood. The purpose of this study was to analyze the clinicopathological and immunohistochemical features of rhabdomyosarcomas of the head and neck (RHNs). Twenty nine patients treated in a single institution were selected. The histological slides were reviewed and the tumors were classified. The immunohistochemical reactions were perform...
O presente trabalho apresenta uma contribuição aos estudos de modelagem climática com ênfase na variabilidade pluviométrica sazonal da Amazônia oriental, durante as estações de verão e outono (DJF e MAM). Baseado nos resultados das simulações regionais do RegCM3 para um período de 26 anos (1982/83 a 2007/08) e usando domínio em alta resolução espacial (30 Km) e dois diferentes esquemas de convecção (Grell e MIT...
In spite of its recognized benefits in the treatment of malignant tumors, radiation therapy have several side effects in the head and neck region. The evaluation of oral conditions by a dentist is important to prevent or minimize these problems. The aim of this retrospective review was to analyze the dental needs in 357 patients who received radiotherapy in the head and neck region and were treated at Orocentro...
In this paper we examine the cross-border acquisitions in Portugal in the period from 1990 to 2002. We characterize the foreign acquisitions in Portugal and the portuguese firms' acquisitions abroad focusing on the countries of origin and target industries. We discuss the observed patterns of acquisition activity in the context of firms' knowledge and internationalization strategies. In particular, we focus on ...
Head and neck cancer patients need to receive dental care previously to radiotherapy. Even patients who regularly visit dental offices need special attention including profilatic and curative treatments. The purposes of this study were to evaluate the dental status of Brazilian head and neck squamous cell carcinoma patients with low socioeconomic level as well as to discuss the dental treatment performed and th...
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