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     CAS Science Spotlight is divided into the following categories:
Most Cited Documents
The "Most Cited Documents in Chemistry" category shows the most cited journal articles indexed in selected CAS database chemistry sections and cited in journals published in 1999 and 2000. This category spans only the chemistry sections of the CAS databases. Of the 8, 000 journals covered for the entire CA database, more than 4100 journals are used to locate citations for the "Chemistry" category.

The "Most Cited Documents in Chemistry and Related Science" category lists the most cited journal articles, journals and patents appearing in the CAS database and published in 1999 and 2000. This category spans the entire breadth of the CAS database, including information in life sciences and a wide range of other chemistry-related scientific disciplines.

Most Requested Documents

The "Most Requested Documents in Chemistry and Related Science" category reports the most frequently requested journal articles and patents based on full text document requests of scientists via the ChemPort Connection feature. Requests are based on aggregated statistics from the ChemPort service; activity of individual users is not tracked.

The "Most Requested" feature of Science Spotlight is provided only for the "Chemistry and Related Science" category.

  化学研究热点:近期被引用最多的化学论文(每月一篇, ISI提供)

Summary by 李晓霞 on 2002-04-29

Last updated by 李晓霞 on 2003-03-25

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