GC-MS Analysis of Fat-soluble Constituents of Hemp Kernels Dynamic Changes in Several Effective Components in Different Vegetative Organs of Salvia miltiorrhiza Bge. Cultivars in Different Seasons Analysis on fat-soluble components in different parts of Polygala tenuifolia from different habitats by GC-MS Analysis on fat-soluble components in different parts of Polygala tenuifolia from different habitats by GC-MS Study on Antibacterial Effects of Fat-soluble Compositions in Nostoc commune Studies on characteristic fingerprints of fat-soluble components of Marsdenia tenacissima by GC