Upper bound of strange particle production in relativistic heavy-ion collisions

Within the framework of a schematic hadronic gas model we present the results of critical temperature and nuclear density at the phase transition. The effect of the hadron volume is specifically included in the calculation. In the case of neutral baryon and strangeness, the critical temperature is found to be about 170 MeV. We will also present the relative yields of strange particles as a function of temperature. In addition, the results for the baryon-free and baryon-rich cases will also be discussed. (author)