In this paper,the error estimates of solutions between two-dimensional linear shells model equations of Koiter\'s type and two-dimensional linear membrane shells model equations by the corrector method are studied.

The sperm shapes, changes of the surface structure of chorion during fertilization and the process of sperm penetration in Andras Davidinus, were examined by scanning electron microscope.

The ultrastructures of the eggshell and shell membrane of the snowcock(Tertaogallus himalayensis)were observed by scanning electronic microscopy.

Hyaluronic acid has been extracted from eggshell membrane by enzymic hydrolysis.

Separating of eggshell membrane and preliminary application;

Investigation and exploiture of eggshell and eggshell membrane;

Extraction and partial characterization of hyaluronic acid from eggshell membrane;