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Controversial list

June 18, 2019 4:34 pm Published by Leave your thoughts

Sectors of China's scientific community have criticized the government's proposal to create a national blacklist of poor-quality academic journals

Magnetic circles

June 18, 2019 4:32 pm Published by Leave your thoughts

LED light strips, a cylindrical magnet, and a thin film of ferrofluid is the recipe for the diffraction effect in which the colored lights form circles