Simulation of submersible plate with elliptical section in low speed maneuvers;

Nitrendipine, which is a dihydropyridines calcium channel antagonist and has a very low solubility in vitro, was selected as the model drug to prepare solid dispersion by solvent evaporation-deposition method, immediate-release pellets by centrifugal granulation technology, and sustained-release pellets by extrusion-spheronization te.

A gene gun particle acceleration system was developed to resolve problems caused by shock waves and the microprojectile preparation in previous gene guns used for DNA immunizations.

A intellectual whole machine balancing instrument for dual rotor systems with little rotating speed difference has been developed, it will possess a great practical application pro.