from the past to the present time, in all civilizations and countries, urbanization is considered the most striking evolution of human societies. with the advent of the industrial revolution and the rapid expansion of cities, societies were faced with numerous problems. one of the most significant problems is extreme centralization in one city or more and fragmentation of urban hierarchical sys...

The case of a gas explosion occurring in geometrically simple enclosure, equipped with vent is considered. It well known the scientific community that calculation reduced overpressure, determinant safety studies, not trivial. Not only there strong dependency on chemical kinetics combustible but also enclosure geometry, fluid flow, mechanical behaviour, shape, etc … As result, modelling physics ...

After the Paris Agreement was signed in 2015, many countries worldwide focused on hydrogen economy, aiming for eco-friendly and renewable energy by moving away from existing carbon which has been primary source of global warming. Hydrogen is most common element Earth. As a light substance, can diffuse quickly; however, it also small risk explosion. Representative explosion accidents have includ...

Numerous studies of hydrothermal dolomite bodies describe brecciated rocks characterized by dark angular fragments dolomicrite bounded together saddle crystals forming veins. Often associated with ore deposits, these breccia (HDB) patterns are usually interpreted as related to hydro-fracturing and so considered univocal markers fluid overpressure. In this contribution we report an occurrence ty...