Conclusion This study provides reliable reference value of serum leptin in adult women and discovers ethnic difference with American NHW,NHB,and AM females.

This paper deals with male and female names, and naming patterns in English in terms of suffix, sexual difference, racial difference as well as Biblical names, which reveals that names in English are more symbols of social, historical and cultural factors rather than labels for human identity.

Taking Guangxi as a sample,the author analyzes the national difference on social capital s effect in occupation changes through the comparative research on different nationatities of Guangxi,and explains the reason for the differences on social capital s effect in occupation changes by using sociological and ethnology theories.

For years,the ethnological theory circle has contributed the ultimate cause or the fundamental cause of national problems to national differences,which is not accurate for its mechanical applying of the concept of contradiction in philosophy.