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text_A: Dmitri Mendeleev was an award-winning chemist who received the Davy Medal from the Royal Society of London .
text_B: Though Mendeleev was widely honored by scientific organizations all over Europe , including the Copley Medal from the Royal Society of London , he resigned from Saint Petersburg University on 17 August 1890.In 1893 , he was appointed Director of the Bureau of Weights and Measures .
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