Autor: Joana Almeida Melo

Polyurethanes (PUs) are an important class of thermoplastic and thermoset polymers obtained by polycondensation reactions among different polyols, isocyanates and chain extenders, leading to a wide v …

Youth development represents a complex set of individual transitions embedded in a particular socio-political environment, cultural context, and historical timing. Though turning points are experienc …