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
1,414,816
Country Rank
20,262
Institution Rank : 125
![](https://cdn.adscientificindex.com/logos/1584.png)
![Nigeria](/flags/ng.png)
![Ojiako Eugenia Nonye](/user/assets/images/profile/no-profile-photo.png)
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
3
2
0.667
* Total i10 Index Rankings
World Rank
1,426,239
Country Rank
20,625
Institution Rank : 128
![](https://cdn.adscientificindex.com/logos/1584.png)
![Nigeria](/flags/ng.png)
![Sylvia Ifeyinwa Okonkwo](/pictures/51/4531653.jpg)
Analytical Chemistry
Phytochemistry
Natural Products
Nanomaterials
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
3
1
0.333
* Total i10 Index Rankings
World Rank
1,588,365
Country Rank
25,224
Institution Rank : 160
![](https://cdn.adscientificindex.com/logos/1584.png)
![Nigeria](/flags/ng.png)
![Veronica O. Ezigbo](/pictures/7e/4637399.jpg)
Industrial Chemistry
Organic Chemistry
Biological Chemistry
Plant Chemistry
Extraction
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
2
1
0.500
* Total i10 Index Rankings
World Rank
2,129,829
Country Rank
44,151
Institution Rank : 377
![](https://cdn.adscientificindex.com/logos/1584.png)
![Nigeria](/flags/ng.png)
![Philomena Chukwu](/pictures/28/4926792.jpg)
Organic Chemistry
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
0
0
0
* Total i10 Index Rankings
World Rank
2,155,710
Country Rank
45,338
Institution Rank : 391
![](https://cdn.adscientificindex.com/logos/1584.png)
![Nigeria](/flags/ng.png)
![Azubuike Jeremiah Okolo](/pictures/8c/4922335.jpg)
Inorganic Chemistry
organic chemistry
Medicinal Inorganic Chemistry
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
0
0
0
* Total i10 Index Rankings
World Ranking
1,414,816
Country Ranking
20,262
Institution Ranking
125
Ojiako Eugenia Nonye
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
3
2
0.667
* Total i10 Index Rankings
World Ranking
1,426,239
Country Ranking
20,625
Institution Ranking
128
Sylvia Ifeyinwa Okonkwo
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
3
1
0.333
![](https://cdn.adscientificindex.com/logos/1584.png)
Analytical Chemistry
Phytochemistry
Natural Products
Nanomaterials
* Total i10 Index Rankings
World Ranking
1,588,365
Country Ranking
25,224
Institution Ranking
160
Veronica O. Ezigbo
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
2
1
0.500
![](https://cdn.adscientificindex.com/logos/1584.png)
Industrial Chemistry
Organic Chemistry
Biological Chemistry
Plant Chemistry
Extraction
* Total i10 Index Rankings
World Ranking
2,129,829
Country Ranking
44,151
Institution Ranking
377
Philomena Chukwu
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
0
0
0
* Total i10 Index Rankings
World Ranking
2,155,710
Country Ranking
45,338
Institution Ranking
391
Azubuike Jeremiah Okolo
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
0
0
0
![](https://cdn.adscientificindex.com/logos/1584.png)
Inorganic Chemistry
organic chemistry
Medicinal Inorganic Chemistry