Hiroshi Oka

339 papers and 6.9k indexed citations i.

About

Hiroshi Oka is a scholar working on Surgery, Molecular Biology and Epidemiology. According to data from OpenAlex, Hiroshi Oka has authored 339 papers receiving a total of 6.9k indexed citations (citations by other indexed papers that have themselves been cited), including 65 papers in Surgery, 47 papers in Molecular Biology and 46 papers in Epidemiology. Recurrent topics in Hiroshi Oka’s work include Liver Disease Diagnosis and Treatment (29 papers), Neuroscience and Neuropharmacology Research (23 papers) and Semiconductor materials and devices (18 papers). Hiroshi Oka is often cited by papers focused on Liver Disease Diagnosis and Treatment (29 papers), Neuroscience and Neuropharmacology Research (23 papers) and Semiconductor materials and devices (18 papers). Hiroshi Oka collaborates with scholars based in Japan, United States and United Kingdom. Hiroshi Oka's co-authors include Hitoshi Shiozaki, Shigeyuki Tamura, Masatoshi Takeichi, Kenji Kobayashi, Shinji Hirano, Toshitsugu Oda, Kazumasa Miki, Keisuke Iihara, Norihisa Matsuyoshi and Chie Furihata and has published in prestigious journals such as Journal of Biological Chemistry, Applied Physics Letters and Gastroenterology.

In The Last Decade

Co-authorship network of co-authors of Hiroshi Oka i

Fields of papers citing papers by Hiroshi Oka

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Countries citing papers authored by Hiroshi Oka

Since Specialization
Citations

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

Explore authors with similar magnitude of impact

Rankless by CCL
2025