A team of Chinese researchers has developed a power-free device to extract plasma from whole blood with 99% separation ...

A team of researchers from Shenzhen Institutes of Advanced Technology, China has developed a power-free device to extract ...

Get a detailed paper analysis, question paper, and answer key. Check expert reviews, difficulty level, and expected answers ...

CBSE conducted the Class 12 Chemistry exam on. Students can now check the answer key to assess their performance. The paper ...

据《2024年培育钻石产业发展白皮书》数据，2023年全球培育钻石毛坯产量逼近3000万克拉，中国占据全球市场70%以上份额，其中河南贡献全国8成，连四线柘城都年产400万克拉，一年创收200亿！

Under the action of an external magnetic field, the diamagnetic particles and paramagnetic medium will generate negative magnetophoretic force due to different magnetic susceptibility, pushing the ...

2025年2月，全球矿业巨头英美资源集团（Anglo American Plc）的股价较2022年峰值缩水逾60%，其核心资产戴比尔斯（De Beers）的钻石开采计划被砍至2600-2900万克拉，创下本世纪最低产能目标。

Venanzi, L., J. Chem. Soc., 719 (1958). Gill, N. S., Nyholm, R. S., and Pauling, P., Nature, 182, 168 (1958).

The Central Board of Secondary Education (CBSE) conducted the Class 12 Business Studies examination on February 27, 2025.