Friction force determination between the inclined piles of the cotton gin drum from small impurities and seed of the fiberSobirjon Novruzov, Anvar Djuraev, Ilkhom Abbazov, Bobir Sharopov, Nusratillo Toshpulatov and Khayrullakhan AripovE3S Web Conf., 377 (2023) 03015DOI: https://doi.org/10.1051/e3sconf/202337703015