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. Additionally, click to view the special rankings based on Productivity Rankings: Scientists Last 6 years' i10 Index", Universities Total i10 Index Rankings 2025, Universities Last 6 Years i10 Index Rankings 2025 "Art and Humanities i10 Productivity Rankings" and "Social Sciences and Humanities i10 Productivity Rankings".
* Last 6 Years i10 IndexRankings
Ranking Based On Selection :1
Energy and Environmental Engineering
Thermochemical Conversion
Material Development
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
16
15
0.938
* Last 6 Years i10 IndexRankings
Ranking Based On Selection :2
Process Engineering
renewable energy
catalysis and biochemical
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
7
7
1.000
* Last 6 Years i10 IndexRankings
Ranking Based On Selection :3
Environmental Engineering
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
6
4
0.667
* Last 6 Years i10 IndexRankings
Ranking Based On Selection :4
Process Engineering
Biotechnology
Environmental Engineering
Biochemical Engineering
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
2
2
1.000
* Last 6 Years i10 IndexRankings
Ranking Based On Selection :5
Chemical Reaction
Chemical Looping Technology
Catalysis
Energy Utilization
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
1
1
1.000
David Onoja Patrick
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
16
15
0.938
Energy and Environmental Engineering
Thermochemical Conversion
Material Development
Kefas Haruna Mavakumba
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
7
7
1.000
Process Engineering
renewable energy
catalysis and biochemical
Timothy Musa Chiroma
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
6
4
0.667
Environmental Engineering
Yusufu Luka
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
2
2
1.000
Process Engineering
Biotechnology
Environmental Engineering
Biochemical Engineering
Hassan Ahmed Saddiq
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
1
1
1.000
Chemical Reaction
Chemical Looping Technology
Catalysis
Energy Utilization