TY JOUR TI THE MODIFIED PARAMETERS EFFECTS FOR THERMAL PROTECTION PROPERTIES OF HYDROGEL IN JET FIRE CONDITIONS KW hydrogel KW electrophysical and thermal modification KW thermal protection KW variable frequency modulated potential KW jet fire JO Scientific and analytical journal «Vestnik Saint-Petersburg university of State fire service of EMERCOM of Russia» AU Mikhaylova, V.I. AU Trofimetz, V.Y. PY 2017 IS 2017 PB Saint-Petersburg University of State Fire Service of Emercom of Russia