The Pt/C catalyst was prepared with solid phase reaction method (Pt/C(S)) for the first time. Its performances were compared with that prepared by the tradition
Two new spirostanol glycosides named agamenoside A and B, were isolated from the fcrmcnted leaves of Agave americana. Their structures were elucidated as (23S,
The uniform NiFe2O4 powders with different particle size and morphologies (octahedral,cubic and spherical) have been prepared from different precursors via hydr