2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/8069We have performed SPH simulations for the response of the gaseous disks to the imposed potentials including those from bars and SMBHs. Evolution of the nuclear regions of gaseous disks depends critically on the masses of SMBHs as well as the sound speeds in the gas.2 pages, 1 Postscript figures, appeared in International Astronomical Union Symposium no. 220, held 21 - 25 July, 2003 in Sydney, Australia. Eds: S. D. Ryder, D. J. Pisano, M. A. Walker, and K. C. Freeman. San Francisco: Astronomical Society of the PacificAstrophysicstext