Jean-Louis Cohen was brought up during the Cold War in Paris, between the portraits of Einstein and Stalin, in a family of left-wing scientists. Regardless of having become an architect, a different professional career of his parents, they had inevitably marked his future. The rigorous way in which he later worked as an architectural historian is symptomatic of this, as is the way in which he maintained a heter...
Energy prices play a crucial role in combating geopolitical risks, especially for the major suppliers of energy resources. However, energy prices display a bilateral relationship with geopolitical risks in any economy. Any hike in the price of energy stimulates geopolitical risk factors and visa-versa. The consequences adversely impact economies and bring forth international tensions. This paper bridges a gap b...
RESUMO: A transição para sistemas elétricos baseados em renováveis tem sido crítica para o combate às alterações climáticas. Tal contribui para uma maior vulnerabilidade dos sistemas a variações do clima e do consumo elétrico no futuro. Com base nisto, este trabalho analisa o impacto que climas futuros e cenários de consumo terão num sistema elétrico com elevada penetração de renováveis. O caso de estudo é Port...
RESUMO: A transição para sistemas elétricos baseados em renováveis tem sido crítica para o combate às alterações climáticas. Tal contribui para uma maior vulnerabilidade dos sistemas a variações do clima e do consumo elétrico no futuro. Com base nisto, este trabalho analisa o impacto que climas futuros e cenários de consumo terão num sistema elétrico com elevada penetração de renováveis. O caso de estudo é Port...
Serra da Estrela cheese is the most prestigious traditional Portuguese cheese, being recognized worldwide. In order to prolong the shelf life of this product, which occurs mostly by external spoilage and growth of fungi and moulds on its surface, the application of an edible coating has been considered. For this purpose, the external surface characterization was performed and the type of surface determined. For...
In industrial refrigerated spaces, such as retail stores, where sometimes doors must be open for long periods, the infiltration loads can represent more than half of the total refrigeration load. The use of air curtains can significantly reduce the air infiltration through doorways and, at the same time, it allows the free access by persons and equipment [1]. Besides the experimental research, computational flu...
RESUMO Objectivo: Os autores realizaram um estudo retrospectivo dos casos internados no Hospital de Dia do Departamento de Pedopsiquiatria do Hospital Maria Pia entre Setembro/1993 e Junho/2001, com o objectivo de caracterizar o perfil dos doentes admitidos nesta modalidade de intervenção no que respeita às suas características demográficas, tempo de intervenção, diagnóstico efectuado, situação e encaminhamento...
The dynamics of the bottom zone of a narrow fluidized bed, from bubbling to turbulent regimes, was studied in a cold model of 0.1 m i.d. and 1.3 m high. Tested distributor types were perforated perspex plates, with six different perforation grids, metallic mesh and porous ceramic, with pressures drops ranging from 0.05 to 350 kPa, corresponding to superficial air velocities from 0.1 to 2.3m s-1. Group B silica ...
The paper describes a methodology for assessing the contribution of storage type loads to an electric energy system's load curve and for evaluating the impact of load shedding actions, as part of load management programs, on the system's load curve. The methodology uses physically based individual load models and an aggregation procedure that accounts for both statistical reference patterns of the energy servic...