Encontrados 8 documentos, a visualizar página 1 de 1
Análise de custo-óptimo de soluções para envolvente de edifícios
Xavier, João Filipe da SilvaDissertação para obtenção do Grau de Mestre em Engenharia Civil – Perfil Construção ; A actual crise no sector da construção impele imperativamente a que as soluções construtivas aplicadas a edifícios cumpram determinados critérios, que garantam a maior sustentabilidade possível. Assim, na procura de maior conforto térmico e de encontro a um consumo de energia mais sustentável, é cada vez mais pertinente estud...
Dissecção Espontânea da Artéria Vertebral
Morais, Lurdes; Sampaio, Virgínia; Xavier, João; Canto-Moreira, Nuno; Santos, ManuelaA dissecção da artéria vertebral (DAV) é uma causa muito rara de acidentes vasculares cerebrais (AVC) na criança.Os autores descrevem o caso clínico de uma criança de sexo masculino com 5 anos de idade que iniciou ataxia de forma súbita. No exame neurológico era evidente um síndrome cerebeloso estático e cinético bilateral de predomínio esquerdo e uma hemiparesia direita.A ressonância magnética (RMN) cerebral m...
Computer-based assessment system for e-learning applied to programming education
Xavier, João Cristovão Afonso SampaioTese de Mestrado Integrado. Engenharia Informática e Computação. Faculdade de Engemharia. Universidade do Porto. 2011
Characterisation of S185 steel under monotonic loading by a feature tracking me...
João Pereira; Abílio de Jesus; José Xavier; João Manuel R. S.TavaresIn this work, the mechanical behaviour of S185 steel under monotonic loading was characterised by using an image feature-based tracking method. Tensile tests on three types of cylindrical specimens were carried out, in particularly using smooth and notched specimens. Target features were painted on the specimen surfaces and tracked in images sequences in order to estimate the experimental load-displacement curv...
CO(2), Er: YAG and Nd:YAG lasers in endodontic surgery
Daniel Pozza; Patricia Fregapani; Cristina Xavier; João Weber; Marília Gerhardt de OliveiraOBJECTIVES: CO(2), Er:YAG and Nd:YAG lasers have been used in endodontic surgery. This in vitro study evaluated 1% Rhodamine B dye penetration using computer-assisted morphometry (ImageTool Software) of 108 endodontically treated human permanent canines. MATERIAL AND METHODS: Teeth were divided into 9 groups according to the technique used: A: 90-degree apicoectomy with bur, root-end cavity preparation with ul...
Neuro-Behçet: MR study of a group of patients.
Ramos, Cristina; Sá, Goreti; Tedim Cruz, Vítor; Lopes, Alexandra; Xavier, João; Cruz, RomeuBehçet's disease is a chronic inflammatory, multisystemic disease of unknown aetiology. Central nervous system involvement occurs in a variable proportion of cases (4 to 49%) and is due to intracranial hypertension secondary to dural sinus thrombosis, inflammatory parenquimal lesions or recurrent meningoencephalitis. We reviewed 12 patients, 7 men and 5 women, aged between 27 to 40 years at the time of diagnosi...
Aneurysmal malformation of the vein of Galen in adults.
Xavier, João; Alves, Viriato; Vasconcelos, Cristiana; Leite, António; Cruz, RomeuWe present an adult male harbouring a vascular malformation, manifested by haemorrhage, which localization, arterial feeders and venous drainage, match the pattern of choroidal type vein of Galen aneurysmal malformations seen in babies, excepting the absence of anterior choroidal arteries participation. A few cases of vein of Galen aneurysmal malformations were already reported in adults, but haemorrhage was ne...
Choroidal type aneurysmal malformation of the vein of Galen associated with Dan...
Ribeiro, Valentina T; Botelho, Luís F; Lopes, Alexandra C; Ribeiro, Paula; Xavier, João A; Teixeira, João F; Cruz, RomeuLasjaunias differentiated true vein of Galen aneurysmal malformations (MAVG), which drain to the median prosencephalic vein of Markowski, the embryonic precursor of the vein of Galen, from the aneurysmal dilatations of vein of Galen (VGDA), which reveal venous drainage into a dilated vein of Galen, but already formed. In angioarchitectural terms, MAVG can still be divided in two subtypes: the mural form and the...
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