We propose a two-dimensional (2D) annular photonic crystal (APC) with dual equi-frequency contours (EFCs) in one band. The refractive behaviors of a Gaussian be
Objective:To investigate the correlations among the expressions of hypoxia-inducible factor-1α(HIF-1α),vas-cular endothelial cell growth factor(VEGF) and micr
In the present paper,the authors analysed 10 mineral elements in the roots of Rheum tanguticum collected from 30 different habitats.The mean concentration value