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Part I: Chemical Abstracts

Part I: Chemical Abstracts. Chemical Abstracts. each year or half year has the following Chem Abs # volumes (given by number ranges) author, subject, formula indexes look for decennial indexes if possible if you are not exactly certain of the year, these 10-year volumes are cumulative

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Part I: Chemical Abstracts

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  1. Part I: Chemical Abstracts

  2. Chemical Abstracts • each year or half year has the following • Chem Abs # volumes (given by number ranges) • author, subject, formula indexes • look for decennial indexes if possible • if you are not exactly certain of the year, these 10-year volumes are cumulative • let’s some examples • author: F.E. Lytle, 1971 • subject: information retrieval (F.E. Lytle) • formula: C10H10Fe

  3. Author Search

  4. Chemical Abstracts • the subject search should reveal the same information • since the article is about information retrieval, I looked it up • subject searches require you have a good idea of the general topic • article title = “Some Comments on Computer Searching of Information File Using Hash Codes” • worked  information • did not work  hash, searching

  5. Chemical Abstracts • now that I have the Chem Abstract #, what do I do with it? • use the other books in the same volume to find the journal reference for the paper • the # was 104930t • 104930 is the column number • t is the paragraph or row number • older volumes use superscripted numbers for rows, such as 61464, where the 4 is the row

  6. journal reference Finding the Journal Reference

  7. the volume number the Chem. Abstract # Chemical Abstracts • with Decennial indexes, the volume # is also given with the Chem Abstract #

  8. Chemical Abstracts • let’s try a formula search • find ferrocene via its formula C10H10Fe

  9. Formula Search

  10. Formula Search

  11. Formula Search

  12. Chemical Abstracts - other hints • use the Decennial indexes if possible • search the year before and the year after target year • paper may have been published near a year end

  13. Your Assignments • report your results on the backside of the worksheet

  14. Part II: CAS Online/STN

  15. Chemical Abstracts Online • Chemical Abstract Service (CAS) • founded in 1907 • indexes and abstracts patents, journal articles • indexes over 9,000 scientific journals • 2002 CAS indexed over 800,000 entries (that year) • STN is used to access CAS • STN = Scientific and Technical information Network • BC has an account with STN • use it only after 5 PM (90% discount after that) • use the “Using STN” cheat sheet for logging in & searching

  16. STN Help • more help with STN commands is available at • http://www.stn-international.de/training_center/messenger/training/stncommands.html

  17. Getting the Article • now that you have the journal reference you need to get the actual article • sources • hard copy in our library • ACS Web Editions • Google search (you could get lucky!) • InterLibrary Loans

  18. Getting the Article • let’s try to find the following • F.E. Lytle’s paper: Anal. Chem. vol. 43, p. 1334 • Use ACS Web Editions • ferrocene paper: J. Chem. Phys. vol. 24, p. 1260 • Periodic Locator • Sometimes it does not go back far enough in time • Use ILL

  19. BC Library

  20. InterLibrary Loans (ILL’s) • use when our library or other online sources do not have the desired journal • it takes a week or so, but it is convenient and easy

  21. Starting an ILL

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