Simultaneous quantification of nine constituents in Ziziphi Spinosae Semenby HPLC-MS Effects of Seeds,Leaves and Fruits of Ziziphus Spinosa and Jujuboside A on Central Nervous System Function HPLC-ELSD Fingerprints of genuine Semen Ziziphi Spinosae from Hebei Province Optimization study on extraction technology of the seed of Ziziphus jujuba var.spinosa by orthogonal design with multi-targets Chemical constituents in seeds of aizyphus Comparison on quality of wild Ziziphi Spinosae Semen between marketed and produced in Tianjin Preparation and identification of Jujuboside A artificial antigen