成人自拍视频

Soil organic carbon (SOC) stored in permafrost across the high-latitude/altitude Northern Hemisphere represents an important potential carbon source under future warming. Here, we provide a comprehens...

Professors Chen Yong Can and his research guroup accepted the award on January 10th at the annual National Science-Technology Award Ceremony in the Great Hall of the People in Beijing.The research pro...

By the middle of March 2020, the outbreak and spread of COVID-19 has affected many countries around the world. The cumulative confirmed cases over the world have been over 200 thousand, and a large nu...

Roberto T. Leon, David H. Burrows Professor of Charles E. Via, Jr. Department of Civil and Environmental Engineering at Virginia Polytechnic Institute and State University, was appointed as Disti...

On November 28, the symposium themed key technology of cross-strait channel (submerged floating tunnel), which is a major scientific problem and engineering technical problem of China Association for ...

Feedbacks of physical processes affect the and function of Earth surface and atmosphere system over different temporal and spatial scales. Rivers are the feedback product of turbulent stream flo...