• Citations Per Year
Learn More
An achiral pi-conjugated fluorinated fused pyrazine derivative has been spread at the air/water interface, and its assembling property is investigated. It has been found that the compound, although without any long alkyl chain, could be spread as a floating film on water surface, the surface pressure of which can be compressed up to ca. 70 mN/m. An(More)
The paper focuses on the evaluation of the development situation of commercial service industry in Beijing. First, the evaluation indexes are established, and the grey correlation method is used to analyze the correlation degree on the commercial service industry indexes. Then, the elastic coefficient model of commercial service industry in Beijing is(More)
  • 1