Introduction. Due to the Coronavirus disease 2019 (COVID-19) outbreak and the national emergency state, virtual visits were implemented as an alternative to in-person visits. With this study we aimed to establish asthma patients' general satisfaction with the quality of health care provided by virtual visits (phone or video calls). Materials and methods. A questionnaire (9 questions) was published on the Facebo...
Avaliou-se, neste estudo, o potencial de três macrófitas - Azolla caroliniana, Salvinia minima e Lemna gibba - com vistas à seleção de plantas para remediação de ambientes contaminados por atrazine. Foram realizados experimentos em casa de vegetação durante seis dias, em vasos contendo solução nutritiva Hoagland (0,25 de força iônica), nas seguintes concentrações de atrazine: 0; 0,01; 0,1; 1,0; e 10,0 mg L-1. A...
O potencial de três macrófitas aquáticas - Azolla caroliniana, Salvinia mínima e Lemna gibba - foi avaliado neste estudo, com vistas à seleção de plantas para remediação de ambientes contaminados com arsênio (As). Os experimentos foram conduzidos em casa de vegetação durante seis dias, em vasos contendo solução Hoagland (¼ força iônica) e As nas concentrações de 0,5; 2,5 e 5,0 mg L-1. As três espécies mostraram...
The design of green fiber-reinforced nanocomposites with enhanced properties and dura bility has attracted attention from scientists. The present study aims to investigate the potential of bacterial nanocellulose (BNC) as a green additive for fiber–cement composites. Inverse gas chromatography (IGC) was used to evaluate the influence of incorpo ration of BNC as powder or gel, or coated onto the bagasse fibers, ...
Nowadays domestic and enterprise WLANs are pervasive and offer capabilities adequate for a broad spectrum of applications. Unlocking these networks for enhanced wireless access to select users and devices, through dynamically sharing the unused portion of hotspots bandwidth, is key to provide seamless connectivity. Far from providing just basic wireless connectivity, we argue that these WLANs can be efficiently...
In recent years the technological world has grown by incorporating billions of small sensing devices, collecting and sharing real-world information. As the number of such devices grows, it becomes increasingly difficult to manage all these new information sources. There is no uniform way to share, process and understand context information. In previous publications we discussed efficient ways to organize contex...
Foi com particular entusiasmo que o Departamento de Electrónica e Telecomunicações da Universidade de Aveiro, com o apoio do Instituto de Telecomunicações, organizou esta 12ª Conferência sobre Redes de Computadores – CRC’2012! (...)
In the area of Intelligent Transportation System traffic efficiency and safety for users have become very popular topics and have triggered extensive research in Vehicular Ad-Hoc Networks (VANETs). Traditional methods for research and development like field testing and simulation have been used. But field testing is usually very expensive and simulation lacks accuracy in wireless environments. This article aims...