Total 2,424,675 scientists, country 221, and institutions 24,468 are evaluated in the Productivity Rankings, an exclusive service provided by AD Scientific Index. This ranking measures and highlights the scientific productivity of researchers based on the i10 index (number of publications with at least 10 citations). This system identifies highly productive scientists across disciplines, institutions, and regions, contributing to the development of evidence-based academic policies and effective incentive mechanisms. The rankings include global, regional, and institutional analyses, along with specialized rankings such as Scientists' Last 6 Years' i10 Index and Universities' i10 Index Rankings 2025. With Premium Membership, you can:
- Gain full access to detailed comparisons and advanced analytics,
- Objectively evaluate your academic productivity,
- Make strategic, data-driven decisions to enhance performance.
* Total i10 IndexRankings
Ranking Based On Selection: 1
![Solomon Nnah Ijioma](https://cdn.adscientificindex.com/pictures/32/4602582.jpg)
Environmental
smooth muscle and clinical physiology
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
23
18
0.783
* Total i10 IndexRankings
Ranking Based On Selection: 2
![Goziya William Dzarma](https://cdn.adscientificindex.com/pictures/f3/4915011.jpg)
Gas Processing
Flow Assurance
Bio-process
Environmental Engineering
Unit Operations.
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
8
8
1.000
* Total i10 IndexRankings
Ranking Based On Selection: 3
![Emmanuel Emeka Arinze](https://cdn.adscientificindex.com/pictures/e6/5801227.jpg)
Geotechnical Engineering
Geo-environmental Engineering
Energy Geotechnics
Geotechnical Structures
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
7
7
1.000
* Total i10 IndexRankings
Ranking Based On Selection: 4
![Charles Ekene Igwe](https://cdn.adscientificindex.com/pictures/6b/4915040.jpg)
Environmental Management
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
0
0
0
* Total i10 IndexRankings
Ranking Based On Selection: 5
![Uzonu Ikenna Ugonna](https://cdn.adscientificindex.com/pictures/6e/5033255.jpg)
Environmental Management
Vegetation
air quality dynamics
Health
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
0
0
0
* Total i10 IndexRankings
Ranking Based On Selection: 6
![Chidiebere Anab Atulomah](https://cdn.adscientificindex.com/pictures/fe/5065894.jpg)
Microbiology
Environmental Science
Ecology
Data Science
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
0
0
0
Solomon Nnah Ijioma
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
23
18
0.783
Environmental
smooth muscle and clinical physiology
Goziya William Dzarma
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
8
8
1.000
Gas Processing
Flow Assurance
Bio-process
Environmental Engineering
Unit Operations.
Emmanuel Emeka Arinze
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
7
7
1.000
Geotechnical Engineering
Geo-environmental Engineering
Energy Geotechnics
Geotechnical Structures
Charles Ekene Igwe
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
0
0
0
Environmental Management
Uzonu Ikenna Ugonna
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
0
0
0
Environmental Management
Vegetation
air quality dynamics
Health
Chidiebere Anab Atulomah
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
0
0
0
Microbiology
Environmental Science
Ecology
Data Science