According to the international practice,Diaoyu Islands will have zero effect in delimitation of continental shelf between the two counties and the proportionality should be considered instead.

In order to select the best method to extract DNA from faeces of gray squirrel(Sciurus vulgaris),the PCR was used to detect sex determining region of the Y gene(SRY) so as to determine the sex ratio of the animals in the region of Sun Island.

In natural populations of dioecious plants, the sex ratio is usually 1  1, but the ratio varies with the changes in water supply, nutrient availability, light intensity, temperature, CO2 concentration and disturbance level.

Yet the sex ratio of birth population is constantly rising,which causes some serious social problems in China.

This paper reviewed theoretical base of sex determination and sex differentiation of fowl, respectively adopt sex hormone, immunological methods, sex controlling solution, and use the solution that can increase the oxidizing course of organism, which control poultry s sex, and increase the percentage of female.

Differences between male and female in morphometric characteristics, such as body length, barble length and caudal peducle length, were not found.

Data of the morphometric characteristics were observed by one-way ANOVA analysis, principal component analysis (PCA) and cluster analysis on 6 common carp populations including Huanghe carp (Cyprinus carpio haematopterus Teminck et Schlegel), purse red carp (C.

The scaling properties of the waveguide dispersion in fibers;