Top institutions in chemistry

Data provided by Thomson Reuters from its Essential Science Indicators, January 1999-June 2009

October 22, 2009

 Institution Papers CitationsCitations per paper
1Scripps Research Institute2,152 76,119 35.37
2 Harvard University2,824 97,402 34.49
3 California Institute of Technology2,086 69,935 33.53
4 Massachusetts Institute of Technology3,700 109,467 29.59
5 Northwestern University2,977 85,182 28.61
6 University of California, Berkeley5,161 139,202 26.97
7 Stanford University2,790 71,516 25.63
8 University of California, Los Angeles2,220 51,499 23.20
9 University of California, Santa Barbara2,174 50,380 23.17
10 University of Washington2,353 53,608 22.78
11 University of Michigan2,778 61,359 22.09
12 Georgia Institute of Technology2,432 52,353 21.53
13 University of Minnesota3,471 69,067 19.90
14 University of Texas at Austin3,153 61,822 19.61
15 University of Illinois4,310 81,057 18.81
16 University of Wisconsin, Madison3,463 62,390 18.02
%3D17 Swiss Federal Institute of Technology (ETH), Zurich4,701 83,137 17.68
%3D17 Pennsylvania State University3,025 53,481 17.68
19 Max Planck Society 11,175 195,651 17.51
20 Imperial College London3,365 58,904 17.50
The data above were extracted from the Essential Science Indicators database of Thomson Reuters. This database, currently covering the period January 1999 to June 2009, surveys only journal articles (original research reports and review articles) indexed by Thomson Reuters.

Articles are assigned to a category based on the journals in which they were published and the Thomson Reuters journal-to-category field-definition scheme. Both articles tabulated and citation counts to those articles are for the period indicated. Naturally, institutions publishing large numbers of papers have a greater likelihood of collecting more citations than those publishing fewer papers. This ranking is by citations per paper (impact), among those institutions that have collected 50,000 or more citations in chemistry during the period. For papers with multiple institutional addresses, each institution receives full, not fractional, citation credit. Essential Science Indicators lists institutions ranked in the top 1 per cent for a field over a given period, based on total citations.

For the current version, 919 institutions are listed in the field of chemistry, meaning that a total of 91,900 institutions were surveyed to obtain the results. Of the 919 institutions, 43 collected 50,000 or more citations. The ranking by citations per paper (impact) seeks to reveal heavy hitters based on per-paper influence, not mere output. US institutions account for 17 of the 20, while Switzerland, Germany and the UK have one institution each.

For more information on the Essential Science Indicators database, see http://scientific.thomsonreuters.com/ products/esi

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