Determination of Rutin in Eucalyptus youmanii by Spectrophotometric Method;

Preliminary Study on Technology System of Rutin Determination and Extraction in Eucalyptus Youmanii;

From the perspective of science communication,this paper discusses that,Edward Livingston Youmans lectured upon science,diffused evolution philosophy,planned"International Scientific Series"and established the"Popular Science Monthly"in his life,and from that reflects the situation of science commu.

As a famous Russian literal theorist and symbolist in the 20th century, Yury Mikhailovich Lotman established his own structural literal semiotics creatively, and made so much great contribution to this field that it has started to catch attention internationally, and a new school-Tartu Semiotic School has taken shape with him as the driving force.