Koji Usui
Impact in
- Nephrology top 10%
- Parathyroid Disorders and Treatments
- Dialysis and Renal Disease Management
-
- Trace Elements in Health
Papers in
- Nephrology 18
- Dialysis and Renal Disease Management 13
- Parathyroid Disorders and Treatments 8
- Renal function and acid-base balance 2
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- Vitamin K Research Studies 2
- Co-authors
- Hitoshi Obata (2 shared papers)Takafumi Mizuno (2 shared papers)Kenji Horie (1 shared paper)Naoharu Mizuno (1 shared paper)Kenichiro Shigemoto (22 shared papers)Fuyuki Kametani (2 shared papers)Kazuo Kotani (1 shared paper)Shuji Kitagawa (1 shared paper)
- Journals
- Nephrology (5 papers)Renal Failure (2 papers)Plant Physiology and Biochemistry (2 papers)American Journal of Nephrology (1 paper)Nutrients (1 paper)
- Partner nations
- JapanUnited States
In The Last Decade
Koji Usui
25 papers receiving 303 citations
Peers
Comparison fields: 5 of 71
- Nephrology 77
- Nutrition and Dietetics 61
- Pollution 45
- Plant Science 124
- Complementary and Manual Therapy 4
Countries citing papers authored by Koji Usui
This map shows the geographic impact of Koji Usui'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 Koji Usui with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Koji Usui more than expected).
Fields of papers citing papers by Koji Usui
This network shows the impact of papers produced by Koji Usui. 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 Koji Usui. The network helps show where Koji Usui may publish in the future.
Co-authors
The 25 scholars most cited alongside Koji Usui, linked wherever they have co-authored with each other. Click a name or a connecting line to browse the papers they share.
All Works
Showing the 20 most-cited of 29 papers — load more, or switch the sort, to bring in the rest.
| # | Work | ||
|---|---|---|---|
| 1 | 2005 | 121 | |
| 2 | 1991 | 56 | |
| 3 | 2019 | 18 | |
| 4 | 2004 | 17 | |
| 5 | 2021 | 15 | |
| 6 | 2019 | 12 | |
| 7 | 2003 | 11 | |
| 8 | 2007 | 10 | |
| 9 | 2020 | 10 | |
| 10 | 2003 | 6 | |
| 11 | 2022 | 6 | |
| 12 | 2010 | 5 | |
| 13 | 2000 | 5 | |
| 14 | 2022 | 3 | |
| 15 | 1996 | 3 | |
| 16 | 1989 | 2 | |
| 17 | Study on IgA, IgA subclass and complement in the glomerulus of IgA nephropathy by the avidin-biotin-peroxidase complex method. | 1987 | 2 |
| 18 | 2019 | 2 | |
| 19 | T lymphocyte subpopulations in patients undergoing chronic hemodialysis. | 1984 | 2 |
| 20 | 2022 | 2 |
About Koji Usui
Koji Usui is a scholar working on Nephrology, Nutrition and Dietetics, Hematology, Surgery and Molecular Biology, having authored 29 papers that have together received 315 indexed citations. Recurring topics across this work include Dialysis and Renal Disease Management (13 papers), Parathyroid Disorders and Treatments (8 papers), Muscle and Compartmental Disorders (3 papers), Iron Metabolism and Disorders (2 papers), Vitamin K Research Studies (2 papers), Vitamin D Research Studies (2 papers), Erythropoietin and Anemia Treatment (2 papers) and Renal function and acid-base balance (2 papers). The work is most often cited by research in Nephrology (77 citations), Nutrition and Dietetics (61 citations), Pollution (45 citations), Plant Science (124 citations) and Complementary and Manual Therapy (4 citations). Koji Usui has collaborated with scholars based in Japan and United States. Frequent co-authors include Hitoshi Obata, Takafumi Mizuno, Kenji Horie, Naoharu Mizuno, Kenichiro Shigemoto, Fuyuki Kametani, Kazuo Kotani, Shuji Kitagawa, Yoshiko Nishizawa and Takayuki Naito. Their work appears in journals such as Nephrology, Renal Failure, Plant Physiology and Biochemistry, American Journal of Nephrology and Nutrients.
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.