Search results
Results from the WOW.Com Content Network
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.
According to the Journal Citation Reports, the journal's 2016 impact factor is 2.444, ranking it 31 out of 76 journals in the "Chemistry, Analytical" category, [2] 67 out of 158 journals in the "Biotechnology & Applied Microbiology" category; [3] and 39 out of 77 journals in the "Biochemical Research Methods" category.
According to Journal Citation Reports, the journal has a 2022 impact factor of 9.4. [1] PNAS is the second most cited scientific journal, with more than 1.9 million cumulative citations from 2008 to 2018. [2] In the past, PNAS has been described variously as "prestigious", [3] [4] "sedate", [5] "renowned" [6] and "high impact". [7]
The countries with the highest share of articles published in scientific journals according to the Nature Index 2024, which is valid for the calendar year 2023. [2] The "count" is the total number of articles to which nationals of the country have contributed.
The journal is abstracted and indexed in Medline, BIOSIS Previews, [11] Chemical Abstracts Service, [12] Science Citation Index Expanded, [11] and Scopus. [13] According to the Journal Citation Reports, the journal has a 2023 impact factor of 6.4. [14] The journal opposes the over-reliance on the impact factor by the scientific community. [15]
The journal is abstracted and indexed by Index Medicus/MEDLINE/PubMed, [8] the Science Citation Index Expanded, [9] CAS, CNKI, EMBASE and Scopus. According to the Journal Citation Reports , the journal has a 2023 impact factor of 11.8.
The long-term impact of biodiversity loss in Madagascar is modelled, suggesting that recovery from extinctions could take as long as 23 million years. [22] [23] Cyclic sighing is found to be effective in reducing anxiety, negative mood and stress, and more so than mindfulness meditation. [24] [25] 11 January
12 April: Researchers demonstrate an 'AI scientist' that can rediscover physical laws from axioms and data. 14 April: Launch of the JUICE mission to Jupiter. 3 April. Five employees at the National Hurricane Center publish a tropical cyclone report (TCR) on Hurricane Ian, which officially upgrades the hurricane from a Category 4 to a Category 5 on the Saffir–Simpson scale.