biotical

1.Conclusion Medical Chitosan to be used for prevent postoperative adhesion before closed up the incision was effective and it was ideal biotical material for prevent postoperative adhesion.

预防肠粘连发生几丁是一种理想生物材料，值得推广应用。【关键词】几丁；手术；

2.Apart from its good surface activity,high quantity of Hexadecane and burning property,the biotical surface active agent also has a more extensive source,higher economic and market effects.

表面活剂除了具备优良表面活、较高十六烷值和燃外,其来源更为广泛,经济、市场也更好,同时表面活剂还是一种清洁、环保生物源,具有优良可再生和降解;