Koichi Hirai
- Immunology top 0.5%
- Physiology top 0.5%
- Immunology and Allergy top 0.5%
- Pulmonary and Respiratory Medicine top 5%
- Rheumatology top 1%
- Co-authors
- Masao YamaguchiKazuhiko YamamotoKen OhtaKouji MatsushimaMisato MiyamasuToshiharu NakajimaHiroyuki NagaseYutaka Morita
- Topics
- Asthma and respiratory diseases (63 papers)Mast cells and histamine (41 papers)Synthesis of β-Lactam Compounds (25 papers)
- Journals
- Journal of Biological ChemistryThe Journal of ImmunologyAmerican Journal of Respiratory and Critical Care Medicine
- Partner nations
- JapanUnited StatesUnited Kingdom
In The Last Decade
Koichi Hirai
174 papers receiving 5.4k citations
Peers
Comparison fields: 5 of 133
- Immunology 2.5k
- Physiology 2.2k
- Immunology and Allergy 1.1k
- Pulmonary and Respiratory Medicine 730
- Rheumatology 675
Countries citing papers authored by Koichi Hirai
This map shows the geographic impact of Koichi Hirai'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 Koichi Hirai with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Koichi Hirai more than expected).
Fields of papers citing papers by Koichi Hirai
This network shows the impact of papers produced by Koichi Hirai. 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 Koichi Hirai. The network helps show where Koichi Hirai may publish in the future.
Co-authorship network of co-authors of Koichi Hirai
This figure shows the co-authorship network connecting the top 25 collaborators of Koichi Hirai. A scholar is included among the top collaborators of Koichi Hirai 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 Koichi Hirai. Koichi Hirai is excluded from the visualization to improve readability, since they are connected to all nodes in the network.
All Works
| # | Work | Indexed citations |
|---|---|---|
| 1 | 19 | |
| 2 | 21 | |
| 3 | 46 | |
| 4 | 87 | |
| 5 | 81 | |
| 6 | 45 | |
| 7 | 118 | |
| 8 | 102 | |
| 9 | 249 | |
| 10 | 118 | |
| 11 | 10 | |
| 12 | 15 | |
| 13 | 14 | |
| 14 | 37 | |
| 15 | 34 | |
| 16 | 4 | |
| 17 | 4 | |
| 18 | 7 | |
| 19 | Suppressing Effect of Spices for Fishy Odor:A Model Experiment with the Mixture of Trimethylamine and Spices | 2 |
| 20 | 1 |
About Koichi Hirai
Koichi Hirai is a scholar working on Immunology and Allergy, Immunology and Physiology, having authored 182 papers that have together received 5.6k indexed citations. Recurring topics across this work include Asthma and respiratory diseases (63 papers), Mast cells and histamine (41 papers) and Synthesis of β-Lactam Compounds (25 papers). The work is most often cited by research in Immunology and Allergy (1.1k citations), Immunology (2.5k citations) and Physiology (2.2k citations). Koichi Hirai has collaborated with scholars based in Japan, United States and United Kingdom. Frequent co-authors include Masao Yamaguchi, Kazuhiko Yamamoto, Ken Ohta, Kouji Matsushima, Misato Miyamasu, Toshiharu Nakajima, Hiroyuki Nagase, Yutaka Morita, Toshiaki Takaishi and Hirokazu Yamada. Their work appears in journals such as Journal of Biological Chemistry, The Journal of Immunology and American Journal of Respiratory and Critical Care Medicine.
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.