Abstract: A three-dimensional, porous structure made of fragments of a nanofibre web is provided. Furthermore, a method for the production of a three-dimensional, porous structure made of nanofibre web fragments is proposed. The three-dimensional, porous structure is used for example in medicine, preferably in regenerative medicine. Furthermore, the structure according to the invention made of fragments of a nanofibre web can be used for the treatment of tissue damage, for the immobilisation of biological cells, for the construction of biological tissue and as a biological filler in vitro and also in vivo.

Abstract: A light display system using fiber-optic light feeds has a matrix plate in which information signs to be displayed (and optionally composed of several display symbols) are formed by grids of light guide exits, according to their display. The light guides are combined to form several light guide cable trees to each of which at least one main light source and one auxiliary light source are assigned on the feeding side. The feeding ends of the light guides of the respective mutually exchangeable display symbols are arranged on a plane or curved surface or line in such a manner that each one of a plurality of light sources arranged on a common carrier, as the result of the relative displacement of the light sources with respect to the feeding ends, can be positioned in front of each feeding end, with a preferably flush alignment of the optical axes of the respective lamp and of the respective light guide cable tree.