Journal articles, abstract heading

Medhne MEDLINE (Medical Literature Analysis and Retrieval System Online) is a bibhographic database. It contains more than 16 million references to journal articles starting from 1949 till present. All the records in MEDLINE are indexed with Medical Subject Headings (MeSH). MEDLINE is a part of PubMed and covers the subjects of biomedicine and health, chemical sciences, bioengineering, etc. MEDLINE is the primary component of PubMed (http //pubmed.gov) a link to PubMed is found on the National Library of Medicine (NLM) home page at http // www.nlm.nih.gov. The result of a MEDLINE/PubMed search is a list of citations (including authors, tide, source, and often an abstract) to journal articles and an indication of free electronic full-text availability. 

Chemical Abstracts (CA) currently covers over 10,000 periodicals, patents, and other sources and produces brief summaries of the information in each journal article along with a bibliographic heading. The print publication ceased in 2010, and information in this database is accessed online though STN (mostly librarians) or SciFinder (mostly professional chemists). Chemical Abstracts is selectively incorporating older abstracts into its database, in particular materials from Chemisches Zentralblatt and the archives of the Royal Chemical Society s abstracts. 

The arrangement of the abstracts within any one section in Chemical Abstracts is determined by the original document type (first, abstracts of journal articles, including citation of review articles, then abstracts about technical reports, deposited documents and dissertations, followed by announcements of new books and, finally, patent abstracts). The abstracts under the various document headings are arranged according to the content of the original publication (Subsections). 

This designation is from the Chemical Abstracts Service (CAS) for articles published in 2003 as pertains to journals covered by (HAS, and under the subject heading of chemistry. The B3LYP articles (reference 103) occupy the most cited articles list for the years 1999 through 2003 (http //www.cas.org). 

Many of the journals discussed so far can be classified as primary publications in so far as they contain reports of original work. Owing to their astronomical numbers and the impossibility for any chemist to read all those which may be of interest to him, a further type of periodical has developed to act as a guide to them either by giving brief summaries of their contents or by listing the titles of their articles under classified headings. These are known as abstract journals and indexes. The main current titles of the former are Chemical Abstracts, Chemisches Zentral-... 

There is a third type of publication which it would be more correct to describe as an index than as an abstract journal. Here the entry consists of the title of the article, either as it stands or in an expanded form, with the addition of the author s name and the journal reference. The entries in this form of publication are most commonly arranged under alphabetical subject headings. 

The Uterature on thermal analytical methods is widely scattered because it is generally abstracted under the application heading rather than under the method heading. The American Chemical Society publishes its Chemical Abstracts, which embrace most published research papers, and all the articles which contain thermal analysis data then appear in CA. Select Abstracts on Thermal Analysis. There are two international journals that publish papers on... 

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