12 documents found, page 1 of 2

Impacto Físico e Psicológico na vida de um cuidador informal

<jats:p>Introdução: Os cuidadores informais desempenham um papel crucial na prestação de cuidados a indivíduos com doenças crónicas ou incapacidades. Esta tarefa pode gerar uma sobrecarga física e psicológica significativa, impactando negativamente a qualidade de vida dos cuidadores.   Objetivos: Este estudo pretende investigar qual o nível de sobrecarga de um grupo de cuidadores informais e desta forma compree...

Power Sharing in Island Microgrids

The growth of local renewable energy sources and heavy loads in power distribution networks, such as the increasing electric vehicles charging stations, causes several issues with a direct impact on the stability of the electrical grid. An attempt to overcome such issues is the microgrid concept, which has the grid structured into local sub-grids that manage their power and energy balancing. A microgrid may ope...

Tabique walls, a light timber structure constructive details and material chara...

This document aims to give additional contribution into the study of tabique walls, a light timber wall existing in the old constructions in Portugal, and for which there is still a lack of information. This work includes an inspection campaign on 11 buildings located at the historic centre of the Portuguese city of Viseu. The information obtained allowed to create databases of the constituent elements and of t...

Comparison of DSOGI-Based PLL for Phase Estimation in Three-Phase Weak Grids

The paper presents a summary of different double second-order generalized integrator (DSOGI)-based phase-locked loop (PLL) algorithms for synchronization with three-phase weak grids. The different methods are compared through simulation under a variety of grid conditions, such as unbalanced phase voltages, high low-order harmonics distortion, frequency steps, phase jumps, and voltage sags. Following the simulat...

The Role of Metallic Connections in the Global Behavior of Timber Frame Structu...

In order to perform a correct and efficient rehabilitation of old building, it is required to know the materials used, their main properties as well as the construction process. Tabique Walls (TW) are primary building components of many constructions in the historic center of Viseu and their function, in addition to being used as partitioning elements (the most common in Portugal), is to be part of the main str...

A entrevista compreensiva como mecanismo instituinte da flexibilidade metodológ...

Impact of the architecture of dye sensitized solar cell-powered electrochromic ...

The functional layers arrangement in a dye sensitized solar cell electrochromic device (DSSC-EC) on the energy conversion efficiency and on the ability to change the color is studied. The highest power conversion efficiency of ca. 7% and good color change in closed circuit conditions was observed with electrochromic WO3 deposited on the counter-electrode of the DSSC. When WO3 layer was applied over the photoano...

Aspectos visuais em línguas de sinais e a percepção científica: um caso na astr...

Presentation of the Corpus of Portuguese as a Foreign/Second Language - COPLE2

In this article, we present COPLE2, a new corpus of Portuguese FL/L2, which encompasses written and spoken data produced by foreign learners of Portuguese at the University of Lisbon. Over the past few years we are seeing a substantial growth in the area of learner corpus research applied to other languages besides English. Our aim is to enhance the learning data of Portuguese, a less commonly taught language. ...

Antioxidant properties of sterilized yacon (Smallanthus sonchifolius) tuber flour

The objective of this research work was to investigate the antioxidant properties of sterilized yacon tuber flour. The results revealed for the first time the high antioxidant activity of sterilized yacon flour. The best extract obtained by boiling 8.9% (w/v) of yacon flour in deionised water for 10 min exhibited a total antioxidant capacity of 222 ± 2 mg (ascorbic acid equivalent)/100 g DW and a total polyphen...