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
![Jewel Emem Thomas](https://cdn.adscientificindex.com/pictures/91/5795129.jpg)
Earthquake seismology
Hydrogeophysics
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
21
21
1.000
* Total i10 IndexRankings
Ranking Based On Selection: 2
![Aniekan E. Owen](https://cdn.adscientificindex.com/pictures/57/5795878.jpg)
Computational Chemistry
Catalysis
Inorganic and Drug chemistry
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
19
19
1.000
* Total i10 IndexRankings
Ranking Based On Selection: 3
![Sebastian O. Uremadu](https://cdn.adscientificindex.com/pictures/4c/5794618.jpg)
Accounting & Finance
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
19
13
0.684
* Total i10 IndexRankings
Ranking Based On Selection: 4
![Aniekan E. Akpakpan](https://cdn.adscientificindex.com/pictures/13/5795302.jpg)
industrial/polymer chemistry
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
17
12
0.706
* Total i10 IndexRankings
Ranking Based On Selection: 5
![Ubong Uwem George](https://cdn.adscientificindex.com/pictures/eb/5797302.jpg)
Environmental Pollution & Toxicology / Climate Change
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
17
10
0.588
* Total i10 IndexRankings
Ranking Based On Selection: 6
![Joseph S. Ekpo](https://cdn.adscientificindex.com/pictures/0a/5798635.jpg)
Assoc Prof.(Animal products)
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
16
11
0.688
* Total i10 IndexRankings
Ranking Based On Selection: 7
![Ndifreke I. Udosen](/user/assets/images/profile/no-profile-photo.png)
Geophysics
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
15
15
1.000
* Total i10 IndexRankings
Ranking Based On Selection: 8
![Idorenyin Meme Sam](https://cdn.adscientificindex.com/pictures/53/5799037.jpg)
Animal Breeding and Genetics
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
15
11
0.733
* Total i10 IndexRankings
Ranking Based On Selection: 9
![Etie B. Akpan](https://cdn.adscientificindex.com/pictures/9d/5797172.jpg)
Palaeontology/Marine Ecology (Geology)
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
14
1
0.071
* Total i10 IndexRankings
Ranking Based On Selection: 10
![Inemesit Edem Ekop](https://cdn.adscientificindex.com/pictures/07/5799223.jpg)
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
13
13
1.000
Enroll all your faculty members with discounted institutional membership to showcase your institution's academic strength to the world in the best way possible – join now and achieve results fast!
* Total i10 IndexRankings
Ranking Based On Selection: 11
![Uwemedimo E Okon](https://cdn.adscientificindex.com/pictures/61/5797434.jpg)
Rural Development
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
13
9
0.692
* Total i10 IndexRankings
Ranking Based On Selection: 12
![Rasheed Babalola](https://cdn.adscientificindex.com/pictures/06/5797970.jpg)
Reaction Engineering Catalytics
Catalysis. Nanotechnology and Petroleum
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
12
9
0.750
* Total i10 IndexRankings
Ranking Based On Selection: 13
![Idopiseabasi Ekpe Asuquo|ASUQUO, I. E., ASUQUO IDOPISEABASI EKPE, I. E. ASUQUO](https://cdn.adscientificindex.com/pictures/d5/5804773.jpg)
FISHERIES BIOLOGY AND HYDROBIOLOGY
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
11
11
1.000
* Total i10 IndexRankings
Ranking Based On Selection: 14
![Otto Dennis](https://cdn.adscientificindex.com/pictures/20/5275631.jpg)
Ethics
Metaphysics
Phenomenology
Existentialism
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
11
11
1.000
* Total i10 IndexRankings
Ranking Based On Selection: 15
![Otu Ibok](https://cdn.adscientificindex.com/pictures/25/5798450.jpg)
Global Food Security & Nutrition
Food Vulnerability
Poverty
Impact Evaluation & Healthy Diet
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
11
6
0.545
* Total i10 IndexRankings
Ranking Based On Selection: 16
![Ekpo David Ufot](https://cdn.adscientificindex.com/pictures/e8/5799662.jpg)
Environmental Remediation of Contaminated Soils
Engineering Application of Waste Materials
Geotechnical/Geoenvironmental Engin
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
10
10
1.000
* Total i10 IndexRankings
Ranking Based On Selection: 17
![Promise Joseph Etim|Promise Etim](https://cdn.adscientificindex.com/pictures/70/5800904.jpg)
Post-Harvest Technology
Renewable Energy Applications
Process Optimization
Agric.Products Storage
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
10
10
1.000
* Total i10 IndexRankings
Ranking Based On Selection: 18
![Moses Udoh](https://cdn.adscientificindex.com/pictures/94/5071797.jpg)
African Philosophy
Research Methodology
Philosophy and The Environment
Philosophy and The Society
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
10
10
1.000
* Total i10 IndexRankings
Ranking Based On Selection: 19
![Romokere Benson](/user/assets/images/profile/no-profile-photo.png)
History
Intergroup Relations
Nigerian History
Gender Studies
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
10
9
0.900
* Total i10 IndexRankings
Ranking Based On Selection: 20
![Nsikak Abiaobo|N.O. ABIAOBO, ABIAOBO, N. O., NSIKAK OKON ABIAOBO](/user/assets/images/profile/no-profile-photo.png)
FISHERIES BIOLOGY AND ENVIRONMENTAL TOXICOLOGY
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
10
8
0.800
* Total i10 IndexRankings
Ranking Based On Selection: 21
![Samuel Udoka](/user/assets/images/profile/no-profile-photo.png)
Development of Agricultural and Food Value Chain
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
10
7
0.700
* Total i10 IndexRankings
Ranking Based On Selection: 22
![Nse U. Essien](https://cdn.adscientificindex.com/pictures/e2/5799246.jpg)
Sedimentology
Petroleum Geology
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
10
4
0.400
* Total i10 IndexRankings
Ranking Based On Selection: 23
![Ekong Daniel](https://cdn.adscientificindex.com/pictures/dd/5798484.jpg)
Urban Development Studies & Geographic Information System
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
9
3
0.333
* Total i10 IndexRankings
Ranking Based On Selection: 24
![Patrick Udounang](https://cdn.adscientificindex.com/pictures/8a/5806123.jpg)
Crop production
Agronomy and farming systems
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
9
3
0.333
* Total i10 IndexRankings
Ranking Based On Selection: 25
![Joseph B. Emah](https://cdn.adscientificindex.com/pictures/5e/5799176.jpg)
Nano Electronics
Condensed Matter Physics
Theoretical Physics
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
8
5
0.625
Jewel Emem Thomas
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
21
21
1.000
Aniekan E. Owen
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
19
19
1.000
Sebastian O. Uremadu
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
19
13
0.684
Aniekan E. Akpakpan
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
17
12
0.706
Ubong Uwem George
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
17
10
0.588
Joseph S. Ekpo
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
16
11
0.688
Ndifreke I. Udosen
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
15
15
1.000
Idorenyin Meme Sam
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
15
11
0.733
Etie B. Akpan
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
14
1
0.071
Inemesit Edem Ekop
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
13
13
1.000
Enroll all your faculty members with discounted institutional membership to showcase your institution's academic strength to the world in the best way possible – join now and achieve results fast!
Uwemedimo E Okon
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
13
9
0.692
Rasheed Babalola
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
12
9
0.750
Reaction Engineering Catalytics
Catalysis. Nanotechnology and Petroleum
Idopiseabasi Ekpe Asuquo|ASUQUO, I. E., ASUQUO IDOPISEABASI EKPE, I. E. ASUQUO
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
11
11
1.000
Otto Dennis
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
11
11
1.000
Otu Ibok
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
11
6
0.545
Global Food Security & Nutrition
Food Vulnerability
Poverty
Impact Evaluation & Healthy Diet
Ekpo David Ufot
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
10
10
1.000
Environmental Remediation of Contaminated Soils
Engineering Application of Waste Materials
Geotechnical/Geoenvironmental Engin
Promise Joseph Etim|Promise Etim
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
10
10
1.000
Post-Harvest Technology
Renewable Energy Applications
Process Optimization
Agric.Products Storage
Moses Udoh
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
10
10
1.000
African Philosophy
Research Methodology
Philosophy and The Environment
Philosophy and The Society
Romokere Benson
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
10
9
0.900
Nsikak Abiaobo|N.O. ABIAOBO, ABIAOBO, N. O., NSIKAK OKON ABIAOBO
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
10
8
0.800
Samuel Udoka
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
10
7
0.700
Nse U. Essien
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
10
4
0.400
Ekong Daniel
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
9
3
0.333
Patrick Udounang
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
9
3
0.333
Joseph B. Emah
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
8
5
0.625