TY - JOUR TI - HE'S FRACTIONAL DERIVATIVE FOR HEAT CONDUCTION IN A FRACTAL MEDIUM ARISING IN SILKWORM COCOON HIERARCHY AU - Liu Fu-Juan AU - Li Zheng-Biao AU - Zhang Sheng AU - Liu Hong-Yan JN - Thermal Science PY - 2015 VL - 19 IS - 4 SP - 1155 EP - 1159 PT - Article AB - He's fractional derivative is adopted in this paper to study the heat conduction in fractal medium. The fractional complex transformation is applied to convert the fractional differential equation to ordinary different equation. Boltzmann transform and wave transform are used to further simplify the governing equation for some special cases. Silkworm cocoon are used as an example to elucidate its natural phenomenon.