Identify nature N-acylethanolamide-hydrolyzing acid amide (NAAA) inhibitor: effect of Angelicae Pubescentis Radix on anti-inflammation Herbal textual research on origin and development of traditional Chinese medicine “Duhuo” and “Qianghuo” Identification of Chinese traditional medicine Angelicae Pubescentis Radix from different places by fourier transform infrared spectrometry Identification of 17 species of Angelicae Pubescentis Radix based on ITS analysis