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Since ancient times, chromium oxide was used 2000 years ago by the Chinese to cover the tips of weapons and later, as late as 1988, hexavalent chromium was discovered to be dangerous to humans. Currently, many companies carry out chrome plating of plastic parts, which consists in creating a superficial layer of diffusion, of an iron-chromium alloy with up to 10 - 20% chromium. Coating by electrolytic deposition is the most widely used method for creating protective layers for plastic materials and consists in elec...

Resilience is an essential psychological trait for rescuers, as their work involves responding to emergencies and disasters in challenging and often dangerous environments. In the case of rescuers, resilience enables them to remain calm and focused under pressure, cope with the physical and emotional demands of their job, and recover from the traumatic experiences they may encounter in the course of their work. Rescuers often face a range of stressful and challenging situations, such as working in confined spaces,...