autocatalysis

Normally MMPs exist as zymogen in the inactive form and their modulations are controlled at multi-levels. Their activations are mediated by serine protease or fibrinase. In addition, they can also be activated by autocatalysis and modulated by their specific tissue inhibitor of MMPs ( TIMPs).

通常情况下，MMPs受多层次的调控并以酶原的形式存在，激活过程受丝氨酸蛋白酶或纤维蛋白酶的介导，也可以自主催化激活，此外还受其特异性组织抑制剂（TIMPs）的调节。

We obtain the critical loss of stability curve of this system by solving and analysing its reactive-diffusive equation and nonlinear Master equation. It is found that this system is similar to the reactive system of autocatalysis three molecule model having linear end in every aspect.

通过对其反应扩散方程和非线性主方程的求解分析，得到了它的临界失稳曲线，发现它与线性终结的自催化三分子模型的反应系统有许多相似之处。

Auto-combustion was a heterogeneous process, NO3~-and citric acid had oxidation-reduction, gel had certain autocatalysis and citric acid not complexed might be decarbonized;

自燃烧过程是一个非均匀过程，NO3与柠檬酸盐发生原位氧化还原反应，干凝胶具有一定的自催化热分解行为，络合不完全的柠檬酸可能发生了脱碳分解；