Biodegradability and bone-forming effects of CP(calcium phosphate porous ceramics) and CPB(calcium phosphate-bone morphogenetic protein porous composite) in vivo as well as microstructure of the interface between biomaterials and new bone were investigated by roentgenogragh, SEM and EPMA.

The design of biomaterials based on calcium phosphate is a prospective way to develop high-performance hard tissue repair materials for clinical treatment.

Calcium phosphate glass-ceramics has perfect biocompatibility and biological activity, but the poor mechanical performance restricts its application.

Oxidation Mechanism of Hypophosphite;

The results of the electrolysis showed that phosphite was transferred,to a certain degree,to hypophosphite with lower transferring rate and couldn't reach the requirements of industrial production,thus the cause of l.

By applying the electro-catalystic performance of molybdophosphate chemically modified electrode,the authors investigated the conversion of phosphite into hypophosphite by electrochemic/ synthesis and cyclic voltammery technology based on electrocatalytic chwacteristic of molybdophosphate chemically modified electrode.