A study on the behavior of p, p’- DDT in flooded soil was conducted from 1990 to 1991. 14C-p,p’-DDT was used as a tracer. TLC, ARG techniques were used. A chr
A sand sample collected at the foot of Flaming Mountain was studied further. On the basis of the change in the relative intensity after heat treatment, one of t
Cenozoic basalts in the eastern part of Liaoning-Jilin contain abundant mantle-derived inclusions. The rock types of the ultramafic inclusions are composed most
The time interval of neibouring neutrons emitted from a steady state neutron source can be treated as that from a time-dependent neutron source,In the rock spac
Tissues from 30 human pituitary adenomas are monolayer-cell-cultured in vitro.Hormone secretion of GH,PRL,TSH,LH and FSH by cells into medium is detected by rad