Producing accurate maps of the ocean floor is critical to ensuring safety at sea, with better understanding of navigation and deep-sea current and tides. In the past ships with sonar equipment ...
Yardang (Yadan in Chinese) refers to land formations sculpted by relentless desert winds. Whistling past the jutting, silent ...
Four Chinese individuals with hemophilia from the Zhejiang province were also infected after receiving an imported factor VIII concentrate contaminated with HIV. Most of the second and third ...
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