Hajime Kojima

About

Hajime Kojima is a scholar working on Small Animals, Dermatology and Health, Toxicology and Mutagenesis. According to data from OpenAlex, Hajime Kojima has authored 67 papers receiving a total of 903 indexed citations (citations by other indexed papers that have themselves been cited), including 36 papers in Small Animals, 19 papers in Dermatology and 11 papers in Health, Toxicology and Mutagenesis. Recurrent topics in Hajime Kojima’s work include Animal testing and alternatives (36 papers), Contact Dermatitis and Allergies (18 papers) and Effects and risks of endocrine disrupting chemicals (10 papers). Hajime Kojima is often cited by papers focused on Animal testing and alternatives (36 papers), Contact Dermatitis and Allergies (18 papers) and Effects and risks of endocrine disrupting chemicals (10 papers). Hajime Kojima collaborates with scholars based in Japan, United States and Italy. Hajime Kojima's co-authors include Hiroyuki Yamaguchi, Toshiaki Takezawa, Takuo Ogihara, Akiyoshi Nishikawa, Kentarô Yano, Hiroshi Arakawa, Raffaella Corvi, Günter Speit, Stefan Pfuhler and Ying Yang and has published in prestigious journals such as Journal of Biomedical Materials Research, Toxicological Sciences and Critical Reviews in Toxicology.

In The Last Decade

Co-authorship network of co-authors of Hajime Kojima

This figure shows the co-authorship network connecting the top 25 collaborators of Hajime Kojima. A scholar is included among the top collaborators of Hajime Kojima based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Hajime Kojima. Hajime Kojima is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

Hajime Kojima

60 papers receiving 868 citations

Fields of papers citing papers by Hajime Kojima

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Hajime Kojima. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Hajime Kojima. The network helps show where Hajime Kojima may publish in the future.

Countries citing papers authored by Hajime Kojima

Since Specialization

Citations

This map shows the geographic impact of Hajime Kojima's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Hajime Kojima with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Hajime Kojima more than expected).

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar’s output or impact.

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