PURPOSE: NOD2 mutations have been linked to an increased risk of Crohn's disease and to some of its phenotypes. The association between NOD2 mutations and susceptibility to ulcerative colitis (UC) remains somewhat controversial and potential correlations between these mutations and UC phenotype have not been studied. AIM: To assess whether NOD2 mutations are a risk factor for UC in Portugal and if there are any...
Prediction of flowering of olive trees should account for chilling requirements, using an appropriate chilling unit for the accounting of chilling accumulation. After chilling requirements are satisfied, dormancy break takes place. Thereafter, the trees enter the forcing phase, in which the thermal time approach is used, but an appropriate base temperature must be determined. Such a model was developed, calibra...
Abstract Bovine besnoitiosis is caused by Besnoitia besnoiti, an obligate intracellular apicomplexan parasite. Affected animals present cutaneous and systemic manifestations and the disease may lead to considerable economic losses. Although generally associated to tropical and subtropical areas, bovine besnoitiosis is now considered an emergent disease in Europe, due to the increasing number of new cases and a...
Neste artigo discutem-se aspectos construtivos relacionados com as paredes divisórias tradicionais de tabique, de forma a contribuir para um conhecimento mais aprofundado sobre este tipo de elementos, que são parte integrante de um estilo de construção marcante no panorama do património construído português que imperou até inícios do século XX. Informação relativa aos materiais utilizados e às soluções construt...
Traditional buildings basically include natural and autochthonous construction materials and are built with sustainable construction techniques. The knowledge of these materials’s state and construction techniques is required for a proper conservation/renovation work. It is well known that the lack of maintenance is one of the main causes that contribute to the high degree of degradation that the Portuguese tra...
A região norte de Portugal é rica em construções de tabique. Ainda existe uma escassez de trabalhos de investigação que ajudem a compreender melhor este tipo de construção antiga e que auxiliem trabalhos de reabilitação. Um trabalho de investigação tem vindo a ser desenvolvido de forma a documentar os aspectos construtivos relativo às construções de tabique existentes na região de Trás-os-Montes e Alto Douro e ...
Traditional buildings basically include natural and autochthonous construction materials and are built with sustainable construction techniques. The knowledge of these materials’s state and construction techniques is required for a proper conservation/renovation work. It is well known that the lack of maintenance is one of the main causes that contribute to the high degree of degradation that the Portuguese tra...
Corpos-de-prova de zircônia parcialmente estabilizada com ítria foram moldados por prensagem uniaxial, sinterizados e nitretados em plasma de micro-ondas à pressão atmosférica. A camada de ZrN sobre zircônia formou-se a uma taxa de 4 µm.min-1, podendo atingir uma espessura de 500 µm. As amostras foram caracterizadas por meio de medidas de dureza e resistência ao desgaste. A superfície nitretada apresentou durez...
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