Based on monomer 2,6,12-triaminotriptycene,hyperbranched polyimides with high molecular weight modified with different terminal functional groups were obtained
Collision among particles plays a significant role in governing the structure of gas-solids flow in a riser, especially in the dense and acceleration region. Th
The FLAC3D software was used to simulate and analyze numerically the displacement, stress and plastic zone distribution characteristics of a large span intersec