Project supported by the National Natural Science Foundation of China
Many reports have been published since the phenomenon of alloy-softening was discovered in 1940. However, the mechanism of this phenomenon is still in dispute. The intrinsic theory mainly used as the explanation for F...
Project supported by the Science Fund of Academia Sinica
I. MAIN CONTROVERSIES Whether there had existed higher sea levels than the present one and what the scope of transgression had been about 6000-7000 years ago in the south flank of the Changjiang Delta is a long-standi...
There has been a long-term dispute on the demarcation of the highest vegetation zone in N. China. Some scientists regard the top zones of Mt. Taibai and Mt. Wutai as the alpine zone, but most insist that they are zone...
The Nihewan formation at Yangyuan County (阳原县) of Hebei Province is wellknown for its rich fossil mammals, and geological and palaeontological investigations of it began fifty years ago. It was assigned to the earl...