TY JOUR TI STUDY OF THE INFLUENCE OF CARBON NANOMODIFIERS ON THERMAL STABILITY OF THE MATERIAL OF THE TOP OF FIREFIGHTER'S PROTECTIVE CLOTHING KW modification KW thermal analysis KW protective clothing KW astralenes JO Problems of risk management in the technosphere AU Zelinskaya, I.A. PY 2026 IS 2026 PB Saint-Petersburg University of State Fire Service of Emercom of Russia