Derivation of a New Expressions for Wood Transverse Thermal Conductivity and Comparison to Experimental Value Study on the annual variations of foliar nutrient contents from different branches and nutrition diagnosis methods of two apple cultivars Study on change rule of 6 ester-type alkaloids in process of Heishunpian Study on the Change of Biogenic Amines and Its Shelf Life of Dried-salted Fish at Storage GC-MS combined with AMDIS and Koáts retention index to investigate dynamic change rules of volatile components from Atractylodis Macrocephalae Rhizoma with different stir-baking degrees