Productivity Rankings is a unique service offered only by “AD Scientific Index”. This is a ranking system derived from the i10 index in order to show the productivity of the scientist in publishing scientific articles of value. Productivity Rankings is an instrument that lists productive scientists in a given area, discipline, university, and country and can guide the development of meaningful incentives and academic policies. The world rankings, regional rankings, and university rankings of scientists in this table are developed based on the total i10 index. Click for "last 6 years' i10 index". Also see: Universities Rankings 2024 (Sort by : Total i10 Index) and Universities Rankings 2024 (Sort by : Last 6 Years i10 Index)
* Total i10 Index Rankings
World Rank
68,451
Country Rank
1,717
Institution Rank : 16
![](https://cdn.adscientificindex.com/logos/6558.jpg)
![Japan](/flags/jp.png)
![Keiji Naruse](https://cdn.adscientificindex.com/pictures/29/354682.jpg)
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
134
92
0.687
* Total i10 Index Rankings
World Rank
217,013
Country Rank
5,135
Institution Rank : 66
![](https://cdn.adscientificindex.com/logos/6558.jpg)
![Japan](/flags/jp.png)
![Ryo Nagao](https://cdn.adscientificindex.com/pictures/83/424893.jpg)
photosynthesis
plant physiology
biochemistry
biophysics
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
61
53
0.869
* Total i10 Index Rankings
Rankings
![](/assets/images/world-icon.png)
68,451
![Japan](/flags/jp.png)
1,717
![](https://cdn.adscientificindex.com/logos/6558.jpg)
16
Keiji Naruse
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
134
92
0.687
* Total i10 Index Rankings
Rankings
![](/assets/images/world-icon.png)
217,013
![Japan](/flags/jp.png)
5,135
![](https://cdn.adscientificindex.com/logos/6558.jpg)
66
Ryo Nagao
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
61
53
0.869
![](https://cdn.adscientificindex.com/logos/6558.jpg)
photosynthesis
plant physiology
biochemistry
biophysics