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The purpose of this paper is to retrieve and study the highly cited papers as well as the correlation between the citation frequency and the download frequency of the 20 traditional Chinese medicine journals in China, in order to provide the guidance for improving the influence and academic quality of these journals. Bibliometric analyses were conducted on 1103 papers of 20 traditional Chinese medicine journals from 2011 to 2020 by retrieving for the China Academic Journal Network Publishing Database (CAJD) in China National Knowledge Infrastructure (CNKI). SPSS 17.0 software was used to analyze the correlation between the citation frequency and the download frequency via conducting regression fitting and establishing the mathematical models. The results showed that the total citations of the 1103 papers were 93051 times and the average citations were 84.36 times per paper. The total downloads of the 1103 papers were 2058442 times, and the average downloads were 1866.22 times per paper. China Journal of Chinese Materia Medica ranked first according to the number of papers, total citations and total downloads. The citations of Journal of Chinese Medicinal Materials ranked first based on the number of citations per paper. One of Li’s paper had been cited the most (983 times). There were 629 (57.03%) papers whose first author was from universities. The scopes of the first authors were distributed in 29 regions and 2 special administrative regions (Macao, Hong Kong) in China. The authors from Beijing published 283 (25.66%) papers, ranking number one. The number of papers supported by funds was 882 (79.96%). The research results of correlation showed that the citation frequency and the download frequency of the highly cited papers had a highly positive correlation from both journal and paper level for whether the sample data of journals was normally distributed or nonnormally distributed. The correlation coefficients of the 20 journals at journal level and that at paper level were 0.9765 and 0.6677, respectively. The correlation was better at journal level than that at paper level, while the optimal regression fitting was all cubic polynomial. Among the 1103 papers, there were 684 (62.01%) research papers and 419 (37.99%) review papers. The main citation period of the top 15 papers was from the 2nd year to the 6th year after publication, accounting for 78.39%. Papers on clinical therapeutics research, papers on the pharmacological effects and its mechanism of traditional Chinese medicine, and papers on traditional Chinese medicine and natural medicine were the main source of the highly cited papers of the traditional Chinese medicine journals. Editors of the journals should focus on the above-mentioned research areas to select manuscripts for exploiting the excellent sources extensively, while paying attention to review papers, focusing on national major or key projects, paying attention to network spreading, stabilizing authors with quality services, in order to improve the influence and the academic quality of journals.

The objective of this paper is to study the highly cited papers (papers cited more than 30 times) on antineoplastic drugs, and to provide reference for quality improvement and influence increase of journals. Bibliometric analysis of cited papers on antineoplastic drugs published between 1999 and 2018 is conducted by using the Chinese Citation Database. The results show that 4683 papers are cited 34463 times, with an average of 7.36 times per paper. The papers published in 2005, 2010 and 2009 are the most highly cited papers with 2507 (7.27%), 2424 (7.03%) and 2419 (7.02%) times, respectively. The highest number of citation is owned by the paper authored by Ding Jian which is cited 349 (1.01%) times. The most cited journal is Chinese Journal of New Drugs, which is cited 1287 (3.73%) times. The author’s affiliation with the highest citation is China Pharmaceutical University with a citation of 1252 (3.63%) times. The research fund with the highest citation which funded those studies is National Natural Science Foundation of China with a citation of 4278 (12.41%) times. The most highly cited subject is pharmacy with a citation of 12036 (34.92%) times. The main citation period of the top 20 papers is from the 2nd year to the 9th year after publication, accounting for 67.70%. The peak years of citation are the 4th year and the 5th year after publication. Among the above-mentioned top 20 papers, the first authors of 9 papers are from universities, accounting for 45.00%. There are 210 papers with a citation over 30 times for each paper, including 112 (53.33%) research papers and 98 (46.67%) review papers. The study also shows that the subjects of research papers with high citation include pharmacological experimental research, the evaluation of clinical effects, and the impact and protection of antineoplastic drugs, the number of cited papers of which are 50, 18 and 13, accounting for 23.81%, 8.57% and 6.19%, respectively. The papers with high citation frequency are those about antineoplastic drugs in pharmacological effects and mechanisms, clinical evaluation, occupational protection, adverse reactions, as well as various reviews. Editors of journal should focus to organize and absorb above ideas in selecting manuscripts to fully exploit the excellent manuscript sources, and to improve the quality and influence of journals.

Using NH4I as the supporting electrolyte as well as the precursor of an I2 promoter and nitrogen source, a highly efficient electrochemical route was developed to convert aldehydes to nitriles with excellent yields under mild reaction conditions. This electrochemical process could effectively avoid the direct use of NH3 gas, molecular iodine, and oxidants.

Functionalized 2-thiazolidin-4-ones are important heterocyclic compounds owing to their biological activities, 1 , 2 such as anti-tuberculosis, 3 anti-convulsant, 4 fungistatic, 5 bacteriostatic, 6...

Functionalized 2-thiazolidin-4-ones are important heterocyclic compounds owing to their biological activities, 1 , 2 such as anti-tuberculosis, 3 anti-convulsant, 4 fungistatic, 5 bacteriostatic, 6...