Gvozdev German A. RussiaSaratovSaratov State Polytechnical University named after Gagarin Yu. A., 410054, Saratov, Polytechnical str., 77ger7709@yandex.ru Author's articles The Study of Antibacterial Properties of Coatins Based on Metal (Ag, Zn) Nanoparticles in Silicon Dioxide Matrix