Results Prevalence of HIV,Diplococcus gonorrhoeae and Chlamydia were 0.3%(1/352),0.5%(1/182),and 9.3%(17/182) respectively in miners who had sexual experience. Chlamydia positive was related significantly with low degree of education(P=0.027) and marriage(P=0.007).
Most of the patients were found to be unsocial and shy persons and cofessed some sexual meaning hidden in their phobic symptoms and 67 cases had experir ences of sexual behavior in the childhood of 3 to 12 years old.
There are two ways for Symplocos laurina to propagate: clonal reproduction and sexual reproduction.
However, in habitats lacking sufficient nutrition and with higher light intensity, survival rates and space-occupying ability of two kinds of seedlings (sexual and asexual produced) were low and the space would be preempted by grown-up plantlets.
A bottleneck in sexual propagation appeared at the stage from seed to seedling, while in clonal propagation it appeared during the period from an asexual plantlet to a ramet.
Different Responses of Sexual and Asexual Reproduction of Arundinella hirta to Flooding
The sexual and asexual reproductive features of the graminoid species Arundinella hirta growing at riversides of the Jialing River were analyzed.