The technology for preparation of quaternary ammonium cationic starch was researched in a self-made sealed rotating reactor,taking corn starch and CHPTMA as raw materials and KOH as catalyzer.

The paper summarizes the research progress of the effect of microgravity on cytoskeleton in recent years, dis- cusses some problems in detail, such as the effect of microgravity on cytoskeleton, rotary cell culture system of simulated mi- crogravity, the technology for double staining of immunofluorescence of cytoskeleton and so on.

Design of rotating bioreactor and its application in cell culture;

Objective This study investigates construction of cardiac muscle cell-porous collagen scaffold complex in a bioreactor so as to unveil the possibility of generating3-dimensional cardiac muscle tissue under the environment that mimics microgravity in vitro.

Objective Rotary Cell Culture System (RCCS) & Microcarrier Suspension Culture System is one new technique that connected with microcarrier and bioreactor, now is widely used in tissue engineering.

This study investigates construction of cardiac myocyte cell- three dimentional biodegradable polymer foams of PLGA scaffold complex in a bioreactor so as to unveil the possibility of generating 3-D cardiac muscle tissue under the environment that mimics microgravity and supply a 3-dimensional model for physiological and pharmacological studies in vitro.