A phenomenological study of bubbles from the venturi pipe microbubble generator without and with guitar string insertion. - Erlaut, Anugerah; Steven, Soen; Hernowo, Pandit; Hidayatullah, Ibnu Maulana; Culsum, Neng Tresna Umi; Sophiana, Intan Clarissa; Sukreni, Tulus; Purwasasmita, Mubiar (Canadian Journal of Chemical Engineering, 2026)