TY CONF TI DYNAMIC CONDUCTIVITY GREENSTARCASINO OF SHUNGITE IN THE RANGE OF ULTRAHIGH FREQUENCIES KW JO XXIV international conference "Electromagnetic field and materials (fundamental physical research)" AU Antonets, I.V. AU Golubev, E.A. AU Shavrov, V.G. AU Scheglov, V.I. PY 2026 PB INFRA-M Academic Publishing LLC.