There are three main types of volcano-composite or strato, shield and dome. Composite Volcanoes. Composite volcanoes, sometimes known as strato volcanoes, are steep sided cones formed from layers of ash and [lava] flows. The eruptions from these volcanoes may be a pyroclastic flow rather than a flow of lava.
A vagal episode or vasovagal response or vasovagal attack (also called neurocardiogenic syncope) is a malaise mediated by the vagus nerve. When it leads to fainting, also known as a syncope, it is called a vasovagal syncope, which is the most common type of fainting.
Vacuum metallization, also known as thermal evaporation, is the most common PVD (Physical Vapor Deposition) process used to apply metal alloys under vacuum. Where polyester film is concerned, aluminum is vaporized inside a vacuum chamber, and then bonded to a polyester sheet to achieve a uniform metalized layer.