Hirofumi Koyama
- Co-authors
- Akira KikuchiAkira SatoHiroshi SakaneHideki YamamotoTran Dang XuanShinkichi TawataAbdelnaser A. ElzaawelyEiko Tsuchiya
- Topics
- Gastric Cancer Management and Outcomes (7 papers)Oral and Maxillofacial Pathology (4 papers)Genomics and Chromatin Dynamics (4 papers)
- Partner nations
- JapanUnited StatesFrance
In The Last Decade
Hirofumi Koyama
47 papers receiving 872 citations
Peers
Comparison fields: 5 of 106
- Molecular Biology 530
- Cell Biology 92
- Oncology 90
- Plant Science 89
- Surgery 76
Countries citing papers authored by Hirofumi Koyama
This map shows the geographic impact of Hirofumi Koyama'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 Hirofumi Koyama with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Hirofumi Koyama more than expected).
Fields of papers citing papers by Hirofumi Koyama
This network shows the impact of papers produced by Hirofumi Koyama. 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 Hirofumi Koyama. The network helps show where Hirofumi Koyama may publish in the future.
Co-authorship network of co-authors of Hirofumi Koyama
This figure shows the co-authorship network connecting the top 25 collaborators of Hirofumi Koyama. A scholar is included among the top collaborators of Hirofumi Koyama 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 Hirofumi Koyama. Hirofumi Koyama is excluded from the visualization to improve readability, since they are connected to all nodes in the network.
All Works
| # | Work | Indexed citations |
|---|---|---|
| 1 | 1 | |
| 2 | 5 | |
| 3 | 2 | |
| 4 | 31 | |
| 5 | 22 | |
| 6 | 42 | |
| 7 | 5 | |
| 8 | Local Scour In Front of Quay Wall Caused By Bow Thruster And Its Countermeasure Using Filter Units | 2 |
| 9 | 258 | |
| 10 | Study On a Wave Force Acting On a Filter Unit On Sloping Breakwater And Its Stability | 0 |
| 11 | 3 | |
| 12 | 31 | |
| 13 | 10 | |
| 14 | 20 | |
| 15 | [Prognostic factors for breast cancer]. | 0 |
| 16 | [Clinical evaluation of ErbB-2 protein in tissue extract using an enzyme immuno assay (ErbB-2 EIA "Nichirei")]. | 5 |
| 17 | [Clinical evaluation of serum ErbB-2 protein using enzyme immuno assay (ErbB-2 EIA [Nichirei])]. | 5 |
| 18 | 2 | |
| 19 | 0 | |
| 20 | [A case of colorectal cancer showing complete response to UFT]. | 1 |
About Hirofumi Koyama
Hirofumi Koyama is a scholar working on Oral Surgery, Earth-Surface Processes and Hepatology, having authored 54 papers that have together received 905 indexed citations. Recurring topics across this work include Gastric Cancer Management and Outcomes (7 papers), Oral and Maxillofacial Pathology (4 papers) and Genomics and Chromatin Dynamics (4 papers). The work is most often cited by research in Biochemistry (54 citations), Molecular Biology (530 citations) and Pharmacology (50 citations). Hirofumi Koyama has collaborated with scholars based in Japan, United States and France. Frequent co-authors include Akira Kikuchi, Akira Sato, Hiroshi Sakane, Hideki Yamamoto, Tran Dang Xuan, Shinkichi Tawata, Abdelnaser A. Elzaawely, Eiko Tsuchiya, Takahiko Shimizu and Kohji Miyahara. Their work appears in journals such as Journal of Biological Chemistry, The EMBO Journal and PLoS ONE.
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.