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This study was supported by: Contract/Grant No. DE-DT0000236, TO# 28, (base award DE-AM01-04PI45013), between the National Academy of Sciences and the Department of Energy; and Contract/Grant No. N01-OD-4-2139, TO# 250, between the National Academy of Sciences and the National Institutes of Health. This report was prepared by the National Academy of Sciences under award number SB134106Z0011, TO# 4 (68059) from the U.S. Department of Commerce, National Institute of Standards and Technology (NIST). This report was prepared by the National Academy of Sciences under award number 99-06-07543-02 from the Economic Development Administration, U.S. Department of Commerce. The statements, findings, conclusions, and recommendations are those of the author(s) and do not necessarily reflect the views of the National Institute of Standards and Technology, the Economic Development Administration, or the U.S. Department of Commerce. Additional support was provided by the Heinz Endowments, the Association of University Research Parks, Acciona Energy, Dow Corning, IBM, and SkyFuel, Inc.
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