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High affinity of 3D spongin scaffold towards Hg(II) in real waters

This study focuses on the ability of commercial natural bath sponges, which are made from the skeletons of marine sponges, to sorb Hg from natural waters. The main component of these bath sponges is spongin, which is&...

Questionário de avaliação da aprendizagem em ambiente de ensino a distância: DELES-Pt

O questionário Distance Education Learning Environments Survey (DELES), de Walker & Fraser (2005) traduzido e adaptado a estudantes portugueses do Ensino Superior, por Gomes & Pereira (2009-2018), Questionário de Avaliação da Aprendiz...

A behavioral approach to estimation in nD systems

In this paper we study the problem of estimation for multidimensional systems within the context of the behavioral approach. We consider the case where there are no disturbances as well as the case where the system dy...

Water softening using graphene oxide/biopolymer hybrid nanomaterials

There is a growing interest in developing more environmentally friendly softeners for hardness reduction of water supplied for domestic consumption. This work focuses on exploring biopolymer-based softeners, through the surface modification o...