CODEN

CODEN is a six-digit, alphanumeric bibliographic code that allows rapid and unambiguous identification of a serial title or publication nichtseriellen from all departments. CODEN is mainly used in the scientific and technical literature on the chemical or unique citations and in many catalogs to magazines research.

History

The CODEN is one of Charles Bishop thought up as a reminder of the first letters of words in a single series title and used by him -letter code to order the publications used for his work from magazines and to be able to locate quickly. In the 1953 published version of the original four -digit CODEN he added the number of the tape and the page number to cite an article in a magazine exactly. A variation of this was published by him in 1957.

After Bishop had assigned about 4000 CODEN, the four-digit CODEN system from 1961 by L. E. Kuentzel under the direction of the American Society for Testing Materials (ASTM) has continued and then expanded to five digits. The CODEN was intended and the advent of the computer as a machine-readable identification system for series. In several of the 1963 edition of ASTM issued " CODEN for Periodical Titles" about 128,000 CODEN were recorded by the end of 1974.

Although it had been recognized since 1966 that a five-digit CODEN would not be sufficient to provide all series titles so also in the future, the CODEN was in the standard specification ( ASTM Standard E250 ) until 1972 still defined five digits. Only with the published in 1976 standard ( ASTM standard E250 -76) was CODEN the six digits.

At the beginning of 1975, the CODEN system the responsibility of the American Chemical Society was continued.

Today's form

In today's six -digit form of the CODEN the first four digits continue to set the initial of the individual words of a Series title together, followed by a fifth letter, which from the first six letters (A -F) of the alphabet is and indicates the grating field, from the CODEN was taken. The sixth and final point of the CODEN is a machine- computable inspection of the above sites which is occupied either numeric ( 2-9 ) or alphabetic (A- Z). The CODEN always uses uppercase.

In contrast, the first two digits of CODEN for a nichtserielle publication (eg, a conference writing), each featuring an Arabic numeral. The third and fourth digits in turn is busy with a letter. The fifth and sixth digits equal in importance to those of a series CODEN, with the difference that the fifth digit may include all the letters of the alphabet.

The first two digits of CODEN for patents denote the country in which the patent and written language in whose area it is valid. The third and fourth place is always busy with an X. The last two positions are occupied as that of a series CODEN.

CODEN be settled by the Chemical Abstracts Service (CAS) International CODEN Service awarded for all refereed publications in CAS automatically. At the request of publishers of International CODEN Service also assigns CODEN for publications without reference to chemical topics. One finds for this reason CODEN also in other databases (such as RTECS, BIOSIS ) and for series or journals in disciplines that are not referenced in CAS itself.

Up to about 1966 awarded CODEN can be looked up from the two-volume work " CODEN for periodical titles" of LE Kuentzel. The CODEN assigned to 1974 can be researched in the multi-volume work of JG Blumenthal. Until 1998 award CODEN and their resolution can be very good from the " International CODEN Directory" ( ISSN 0364-3670 ), published as a microfiche edition since 1980, determine.

For the determination of current CODEN the online database is of CASSI ( " Chemical Abstracts Service Source Index").

The printed version of CASSI as series work ( ISSN 0738-6222, CODEN CASSE2 ) or Collective Index ( 0001-0634, CODEN CASSI6 ) was set at 31 December 2009. Only the CD -ROM edition ( ISSN 1081-1990, CODEN CACDFE ) is still available. CASSI listed next CODEN, ISSN, ISBN and the correct abbreviation title of a publication and the publisher.

Examples

  • Nature has CODEN » NATUAS ".
  • Technology Review has CODEN » TEREAU "
  • The monograph "Proceedings of the International Conference on Food Factors, Chemistry and Cancer Prevention " (ISBN 4-431-70196-6 ) is associated with the CODEN » 66HYAL ".
  • The conference publication " Recent Advances in Natural Products Research, 3rd International Symposium on Recent Advances in Natural Products Research" is associated with the CODEN » 69ACLK ".
  • Patents from Germany (but not German Reich patents ) are listed under the CODEN » GWXXBX ".
  • For U.S. patents CODEN the " USXXDP " is used.
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