TY JOUR TI Features of absorption of infrared (radiation) energy by an optically thin layer of foamed ichthyogelatin from the scales of commercial (ordinary) and pond fish KW foam layer KW ichthyogelatin KW fish waste KW radiation energy supply KW thermoradiative characteristics KW heat flow KW optical characteristics JO Vestnik of Astrakhan State Technical University. Series: Fishing industry AU Dyachenko, N.. AU Maksimenko, Y.. AU Aleksanyan, I.. AU Dyachenko, V.. AU Nabatov, B.. AU Dyachenko, E.. PY 2026 IS 2026 PB Astrakhan State Technical University