Comunidad de Madrid

Expired endoscopic devices remain sterile and functional: an international multicentre study challenging current shelf-life criteria

Background and study aims Expired medical devices represent an environmental and economic concern, yet their magnitude and true shelf life remain poorly defined. We aimed to quantify the volume and cost of expired endoscopic devices and evaluate their sterility and functionality...

Modelling the degradation of externally bonded post-tensioning tendons including bond-slip behaviour

In recent years, brittle fractures of externally bonded post-tensioning tendons have been observed in bridges worldwide, compromising structural safety and durability. Consequently, concern has increased about the mechanical behaviour of these elements when strand or wire breakag...