T. Koyama
- Environmental Engineering top 10%
- Urban Heat Island Mitigation 3
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- Urban Green Space and Health 3
- Building and Construction top 10%
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- Ga2O3 and related materials 3
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- ZnO doping and properties 6
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- Plant nutrient uptake and metabolism 4
- Plant responses to water stress 3
- Mycorrhizal Fungi and Plant Interactions 3
- Rice Cultivation and Yield Improvement 3
- Co-authors
- Akira YamauchiKei‐ichiro MaedaShigefusa F. ChichibuHideki HayashiTakeyoshi OnumaTakumi SatoKatsuki AdachiKeitaro Tawaraya
- Journals
- Applied Physics Letters (3 papers)Journal of Applied Physics (3 papers)Plant Production Science (3 papers)
- Partner nations
- JapanVietnamPhilippines
In The Last Decade
T. Koyama
23 papers receiving 418 citations
Peers
Comparison fields: 5 of 69
- Environmental Engineering 142
- Health, Toxicology and Mutagenesis 114
- Building and Construction 77
- Electronic, Optical and Magnetic Materials 59
- Surfaces, Coatings and Films 22
Countries citing papers authored by T. Koyama
This map shows the geographic impact of T. 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 T. Koyama with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites T. Koyama more than expected).
Fields of papers citing papers by T. Koyama
This network shows the impact of papers produced by T. 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 T. Koyama. The network helps show where T. Koyama may publish in the future.
Co-authorship network
The 25 scholars most cited alongside T. Koyama, linked wherever they have co-authored with each other. Click a name or a connecting line to browse the papers they share.
All Works
| # | Work | ||
|---|---|---|---|
| 1 | 2024 | 1 | |
| 2 | 2023 | 5 | |
| 3 | 2021 | 9 | |
| 4 | 2021 | 3 | |
| 5 | 2019 | 11 | |
| 6 | 2018 | 38 | |
| 7 | 2016 | 28 | |
| 8 | 2014 | 11 | |
| 9 | 2013 | 111 | |
| 10 | Face extraction for assisting handicapped person's walk and estimation of its direction. | 2012 | 1 |
| 11 | 2007 | 9 | |
| 12 | 2006 | 36 | |
| 13 | 2004 | 29 | |
| 14 | 2004 | 8 | |
| 15 | 2003 | 16 | |
| 16 | 2001 | 19 | |
| 17 | 2000 | 17 | |
| 18 | 1993 | 10 | |
| 19 | Prevalence of Cryptosporidium infection among house rats, Rattus rattus and R. norvegicus, in Tokyo, Japan and experimental cryptosporidiosis in roof rats | 1990 | 11 |
| 20 | The inhibitory effect of a human serum albumin fraction on insulin activity. | 1968 | 0 |
About T. Koyama
T. Koyama is a scholar working on Parasitology, Plant Science and Health, Toxicology and Mutagenesis, having authored 24 papers that have together received 428 indexed citations. Recurring topics across this work include ZnO doping and properties (6 papers), Plant nutrient uptake and metabolism (4 papers), Plant responses to water stress (3 papers), Mycorrhizal Fungi and Plant Interactions (3 papers), Ga2O3 and related materials (3 papers), Rice Cultivation and Yield Improvement (3 papers), Urban Heat Island Mitigation (3 papers) and Urban Green Space and Health (3 papers). The work is most often cited by research in Environmental Engineering (142 citations), Health, Toxicology and Mutagenesis (114 citations) and Building and Construction (77 citations). T. Koyama has collaborated with scholars based in Japan, Vietnam and Philippines. Frequent co-authors include Akira Yamauchi, Kei‐ichiro Maeda, Shigefusa F. Chichibu, Hideki Hayashi, Takeyoshi Onuma, Takumi Sato, Katsuki Adachi, Keitaro Tawaraya, Shusei Sato and Shigenobu Yoshida. Their work appears in journals such as Applied Physics Letters, Journal of Applied Physics, Plant Production Science, Ecological Engineering and Scientific Reports.
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.