00689naa#a2200181#i#450# EN\\bibl\119178 20260403233745.5 2949-2440 20260331b2026####ek#y0engy0150####ca RU Modeling of the synthesis plant of 55% formalin solution, calculation of the material balance and thermal loads of devices Journal article Astrakhan Astrakhan State Technical University 2026 6 с. Journal article local Твердые жиры животного происхождения. 665.22 Shishanov Mikhail Valentinovich Alemasova Olga Sergeevna vestnik.astu.org