The secret as female stockings can protect completely from infection Koronavirus] is opene

Scientists from universities Cambridge to United Kingdom together with the American colleagues conducted research in which tested various options of how it is possible to increase efficiency of surgical and medical masks of the KN95 type at protection from Koronavirus. The main problem of masks – that they leaky adjoin to the person. As it appeared, the size of gaps in many respects depends on the head and nose size. Scientists-engineers decided to hack a mask in several ways. At first applied an adhesive tape accurately to clean gaps between the person and fabric. Then tested option with...