RETRACTED: Mathematical model of thermal water concentration Alexander Lokarev, Vadim Potapov, Irina Matveeva, Evgenia Markova, Svetlana Gryn and Alexey Zaberezhny BIO Web Conf., 116 (2024) 03025 Published online: 03 July 2024 DOI: 10.1051/bioconf/202411603025