TY JOUR TI DETERMINATION OF THE CONTENT OF POLLUTANTS IN THE EXHAUST EMISSIONS OF THE YAMZ-238 GM2 SHIP ENGINE KW technosphere safety KW single-deck passenger ships KW boats; ship engine YaMZ-238 GM2 KW pollutants emissions JO Problems of risk management in the technosphere AU Lozhkina, O.V. AU Malchikov, K.B. PY 2023 IS 2023 PB Saint-Petersburg University of State Fire Service of Emercom of Russia