Sumihiko Okuyama
- Co-authors
- Yoshimasa HiratåSakae HigashidateJoseph KatzGeorge BonorrisToshiharu NagatsuMasao HinoIkuko NagatsuYuri Yoshii
- Topics
- Drug Transport and Resistance Mechanisms (7 papers)Liver Disease Diagnosis and Treatment (7 papers)Analytical Chemistry and Chromatography (3 papers)
- Journals
- Clinica Chimica ActaAmerican Journal of Physiology-Legacy ContentBulletin of the Chemical Society of Japan
- Partner nations
- Japan
In The Last Decade
Sumihiko Okuyama
23 papers receiving 366 citations
Peers
Comparison fields: 5 of 62
- Oncology 182
- Molecular Biology 83
- Spectroscopy 73
- Surgery 67
- Epidemiology 64
Countries citing papers authored by Sumihiko Okuyama
This map shows the geographic impact of Sumihiko Okuyama'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 Sumihiko Okuyama with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Sumihiko Okuyama more than expected).
Fields of papers citing papers by Sumihiko Okuyama
This network shows the impact of papers produced by Sumihiko Okuyama. 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 Sumihiko Okuyama. The network helps show where Sumihiko Okuyama may publish in the future.
Co-authorship network of co-authors of Sumihiko Okuyama
This figure shows the co-authorship network connecting the top 25 collaborators of Sumihiko Okuyama. A scholar is included among the top collaborators of Sumihiko Okuyama 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 Sumihiko Okuyama. Sumihiko Okuyama is excluded from the visualization to improve readability, since they are connected to all nodes in the network.
All Works
| # | Work | Indexed citations |
|---|---|---|
| 1 | 3 | |
| 2 | 3 | |
| 3 | 2 | |
| 4 | 10 | |
| 5 | 2 | |
| 6 | 1 | |
| 7 | [Analysis of free, glycine-and taurine-conjugated individual bile acids using high performance liquid chromatography and immobilized 3 alpha-hydroxysteroid dehydrogenase in column form (author's transl)]. | 8 |
| 8 | On a New Analytical Method of Free, Glycine-conjugated and Taurineconjugated Individual Bile Acids using High Performance Liquidchromatography and Immobilized 3α-Hydroxysteroid Dehydrogenase in Column Form with NAD | 1 |
| 9 | 100 | |
| 10 | 26 | |
| 11 | 7 | |
| 12 | 17 | |
| 13 | 3 | |
| 14 | 8 | |
| 15 | 4 | |
| 16 | 33 | |
| 17 | 65 | |
| 18 | 1 | |
| 19 | 48 | |
| 20 | Determination of extravascular albumin in the rat. | 20 |
About Sumihiko Okuyama
Sumihiko Okuyama is a scholar working on Hepatology, Pharmacology and Oncology, having authored 24 papers that have together received 386 indexed citations. Recurring topics across this work include Drug Transport and Resistance Mechanisms (7 papers), Liver Disease Diagnosis and Treatment (7 papers) and Analytical Chemistry and Chromatography (3 papers). The work is most often cited by research in Oncology (182 citations), Spectroscopy (73 citations) and Clinical Biochemistry (28 citations). Sumihiko Okuyama has collaborated with scholars based in Japan. Frequent co-authors include Yoshimasa Hiratå, Sakae Higashidate, Joseph Katz, George Bonorris, Toshiharu Nagatsu, Masao Hino, Ikuko Nagatsu, Yuri Yoshii, Shinichi Kakumu and T. Inagaki. Their work appears in journals such as Clinica Chimica Acta, American Journal of Physiology-Legacy Content and Bulletin of the Chemical Society of Japan.
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.