Due to their chemical structures and physical properities equal to,or exceeding,synthetic surfactants,and their low toxicity profile to freshwater,marine,and terrestrial ecosystems,biosurfactants are potential candidates for a variety Of environmental application,particularly for bioremediation of polluted materials,such as oil and organic solvent.

Current situation and prospects of aircrew survival equipment;

Methods Exposition the anterior peritoneal space "three canal" and "three ligament" fixed the biological repain plate in defferent and spermatic vessal on the extra "three ligament".

)and "three ligament" (Cooper s ligament,abdominal transarers gascia ligament,ilio-pubic tract ligament)were exposed the biological repain plate was fixed in deferent and spermafic vessal on the extra"three ligament".

A Legal Perspective Study on Buyers Remedy in Case of Sellers Breach of Contract in International Goods Exchange;

Causes for service failure,resulting impacts and remedy principles are described.

The functions of iron,the relations between iron and diseases,symptoms,causes and remedy of iron deficiency to the body were briefly introduced in this paper.

The problems in design and construction for the water jet grouting curtain process,which is to remedy a plain landfill site,was discussed via the real remediation engineering in Asuwei landfill site.

This paper mainly discusses the dynamic process of the psychological contract (PC), including the formation,violation and remediation,es- pecially analyses the problems on the formation and remediation of the PC.