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Users need to account for qualities and limitations of databases and search engines, especially those searching systematically for records such as in systematic reviews or meta-analyses. [2] As the distinction between a database and a search engine is unclear for these complex document retrieval systems, see:
This is a list of open-access journals by field. The list contains notable journals which have a policy of full open access. It does not include delayed open access journals, hybrid open access journals, or related collections or indexing services.
However, an analysis by Elsevier, who created the journal evaluation metric CiteScore, has identified 216 journals from 70 publishers to be in the top 10 percent of the most-cited journals in their subject category based on the CiteScore while they did not have an impact factor. [18] It appears that the impact factor does not provide ...
According to the Journal Citation Reports, the journal has a 2021 impact factor of 11.500, ranking it 21st out of 179 journals in the category "Chemistry, Multidisciplinary" [2] and 2nd out of 57 journals in the category "Mathematical & Computational Biology".
It was founded in 2000 and launched its first journal, PLOS Biology, in October 2003. As of 2024, PLOS publishes 14 academic journals, [2] including 7 journals indexed within the Science Citation Index Expanded, and consequently 7 journals ranked with an impact factor. PLOS journals are included in the Directory of Open Access Journals (DOAJ).
The Chemistry Citation Index was first introduced by Eugene Garfield, a chemist by training. His original "search examples were based on [his] experience as a chemist". [17] In 1992, an electronic and print form of the index was derived from a core of 330 chemistry journals, within which all areas were covered.
The impact factor (IF) or journal impact factor (JIF) of an academic journal is a scientometric index calculated by Clarivate that reflects the yearly mean number of citations of articles published in the last two years in a given journal, as indexed by Clarivate's Web of Science.
ChemistryOpen is a monthly peer-reviewed, open access, scientific journal covering all areas of chemistry and related fields. It is published by Wiley-VCH on behalf of Chemistry Europe . According to the Journal Citation Reports , the journal has a 2022 impact factor of 2.3, ranking it 110th out of 178 journals in the category "Chemistry ...