Chikara Οhyama

519 papers and 9.1k indexed citations
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About

Chikara Οhyama is a scholar working on Surgery, Pulmonary and Respiratory Medicine and Molecular Biology. According to data from OpenAlex, Chikara Οhyama has authored 519 papers receiving a total of 9.1k indexed citations (citations by other indexed papers that have themselves been cited), including 218 papers in Surgery, 206 papers in Pulmonary and Respiratory Medicine and 122 papers in Molecular Biology. Recurrent topics in Chikara Οhyama’s work include Bladder and Urothelial Cancer Treatments (148 papers), Prostate Cancer Treatment and Research (101 papers) and Urinary and Genital Oncology Studies (100 papers). Chikara Οhyama is often cited by papers focused on Bladder and Urothelial Cancer Treatments (148 papers), Prostate Cancer Treatment and Research (101 papers) and Urinary and Genital Oncology Studies (100 papers). Chikara Οhyama collaborates with scholars based in Japan, United States and United Kingdom. Chikara Οhyama's co-authors include Takuya Koie, Yasuhiro Hashimoto, Tohru Yoneyama, Shingo Hatakeyama, Hayato Yamamoto, Shingo Hatakeyama, Takahiro Yoneyama, Yuki Tobisawa, Tomonori Habuchi and Minoru Fukuda and has published in prestigious journals such as Science, Proceedings of the National Academy of Sciences and Journal of Biological Chemistry.

In The Last Decade

Co-authorship network of co-authors of Chikara Οhyama

This figure shows the co-authorship network connecting the top 25 collaborators of Chikara Οhyama. A scholar is included among the top collaborators of Chikara Οhyama 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 Chikara Οhyama. Chikara Οhyama is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

Fields of papers citing papers by Chikara Οhyama

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Chikara Οhyama. 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 Chikara Οhyama. The network helps show where Chikara Οhyama may publish in the future.

Countries citing papers authored by Chikara Οhyama

Since Specialization
Citations

This map shows the geographic impact of Chikara Οhyama'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 Chikara Οhyama with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Chikara Οhyama 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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2026