The AD Scientific Index (Alper-Doger Scientific Index) provides the most comprehensive analysis across 13 main fields and 197 sub-branches at global, national, and regional levels. These analyses are based on indicators such as the H-index, i10-index, and citation count, including their values from the last 6 years. As of Jan 31, 2025, the rankings are determined according to the Total H Index. BETA VERSION: The subject field rankings for the world, regions, countries, and universities are currently in their Beta phase. This is due to the exclusion of (870.053) scientists categorized under ‘Others’, whose profiles have yet to be determined, edited, or classified. As updates are made to these fields, the rankings will be adjusted accordingly. Note: Please keep this in mind while reviewing the rankings. For further details, explore our [University Subject Rankings].
* Total H IndexRankings
Ranking Based On Selection: 1
Nutritional Biochemistry
Medical Biochemistry
Natural product
Nutraceuticals
Computational
Metrics
H-Index
i10 Index
Citation Counts
32
79
3,485
* Total H IndexRankings
Ranking Based On Selection: 2
Environmental Biochemistry and Toxicology
Metrics
H-Index
i10 Index
Citation Counts
21
31
1,465
* Total H IndexRankings
Ranking Based On Selection: 3
Public Health
Health Systems
Medical Education
Metrics
H-Index
i10 Index
Citation Counts
19
31
1,152
* Total H IndexRankings
Ranking Based On Selection: 4
Infertility and Endocrinology
Metrics
H-Index
i10 Index
Citation Counts
17
22
935
* Total H IndexRankings
Ranking Based On Selection: 5
Infectious Diseases Epidemiology
Health Policy
Metrics
H-Index
i10 Index
Citation Counts
17
17
914
* Total H IndexRankings
Ranking Based On Selection: 6
hiv
nephrology
tuberculosis
Metrics
H-Index
i10 Index
Citation Counts
17
19
809
* Total H IndexRankings
Ranking Based On Selection: 7
Agricultural biotechnology
molecular biology
medical biotechnology
Metrics
H-Index
i10 Index
Citation Counts
16
25
1,016
* Total H IndexRankings
Ranking Based On Selection: 8
Reproductive Health
Metrics
H-Index
i10 Index
Citation Counts
16
22
1,015
* Total H IndexRankings
Ranking Based On Selection: 9
Internal Medicine/Gastroenterology/Infectious Diseases
Metrics
H-Index
i10 Index
Citation Counts
16
20
1,028
* Total H IndexRankings
Ranking Based On Selection: 10
Family Planning and Reproductive Health
Metrics
H-Index
i10 Index
Citation Counts
16
21
750
* Total H IndexRankings
Ranking Based On Selection: 11
Community Medicine / Public Health
Nutrition
Health Policy & Health Systems / Nutrition
Metrics
H-Index
i10 Index
Citation Counts
15
21
668
* Total H IndexRankings
Ranking Based On Selection: 12
Agribusiness
Agricultural Marketing
Metrics
H-Index
i10 Index
Citation Counts
15
19
690
* Total H IndexRankings
Ranking Based On Selection: 13
Environmental Microbiolgy
Public Health Microbiolgy
Microbial Biotechnology
Water Quality
Metrics
H-Index
i10 Index
Citation Counts
15
21
619
* Total H IndexRankings
Ranking Based On Selection: 14
Reproductive Endocrinology
Metrics
H-Index
i10 Index
Citation Counts
15
20
768
* Total H IndexRankings
Ranking Based On Selection: 15
food science and technology
Metrics
H-Index
i10 Index
Citation Counts
15
15
703
* Total H IndexRankings
Ranking Based On Selection: 16
Paediatrics
Neonatology
Metrics
H-Index
i10 Index
Citation Counts
14
15
735
* Total H IndexRankings
Ranking Based On Selection: 17
Plant Breeding and Genetics Crop Improvement)
Metrics
H-Index
i10 Index
Citation Counts
14
27
990
* Total H IndexRankings
Ranking Based On Selection: 18
Economic and Environment Geolgy
Metrics
H-Index
i10 Index
Citation Counts
14
20
754
* Total H IndexRankings
Ranking Based On Selection: 19
Orthopaedic Trauma & Limb reconstructive surgery
Metrics
H-Index
i10 Index
Citation Counts
14
17
467
* Total H IndexRankings
Ranking Based On Selection: 20
Paediatric endocrinology
Diabetes
Metrics
H-Index
i10 Index
Citation Counts
14
17
763
* Total H IndexRankings
Ranking Based On Selection: 21
Food processing
nutrition
food engineering
food safety
Metrics
H-Index
i10 Index
Citation Counts
14
14
834
* Total H IndexRankings
Ranking Based On Selection: 22
Antimicrobial Resistance
Bacteriology
Pharmaceutical Microbiology
Metrics
H-Index
i10 Index
Citation Counts
14
23
521
* Total H IndexRankings
Ranking Based On Selection: 23
Water quality
Toxicology
Ecology
Hydrobiology
Sustainability
Metrics
H-Index
i10 Index
Citation Counts
14
20
767
* Total H IndexRankings
Ranking Based On Selection: 24
Nutraceutical
Nutritional
Medical/Clinical Biochemistry
Metrics
H-Index
i10 Index
Citation Counts
14
18
568
* Total H IndexRankings
Ranking Based On Selection: 25
Hydrochemistry
Hydrogeochemistry and hydrogeophysics
Metrics
H-Index
i10 Index
Citation Counts
13
21
791
Patrick Maduabuchi Aja|PM Aja, Aja, P.M., Patrick M. Aja
Ebonyi State University
Abakaliki, Nigeria
Metrics
H-Index
i10-Index
Citation Counts
32
79
3,485
Nutritional Biochemistry
Medical Biochemistry
Natural product
Nutraceuticals
Computational
Orji Obasi Uche
Ebonyi State University
Abakaliki, Nigeria
Metrics
H-Index
i10-Index
Citation Counts
21
31
1,465
Environmental Biochemistry and Toxicology
Edmund Ndudi Ossai
Ebonyi State University
Abakaliki, Nigeria
Metrics
H-Index
i10-Index
Citation Counts
19
31
1,152
Public Health
Health Systems
Medical Education
Johnson Akuma Obuna
Ebonyi State University
Abakaliki, Nigeria
Metrics
H-Index
i10-Index
Citation Counts
17
22
935
Lawrence Ulu Ogbonnaya
Ebonyi State University
Abakaliki, Nigeria
Metrics
H-Index
i10-Index
Citation Counts
17
17
914
Ngozi Ifebunandu
Ebonyi State University
Abakaliki, Nigeria
Metrics
H-Index
i10-Index
Citation Counts
17
19
809
Celestine Afiukwa
Ebonyi State University
Abakaliki, Nigeria
Metrics
H-Index
i10-Index
Citation Counts
16
25
1,016
Agricultural biotechnology
molecular biology
medical biotechnology
Justus Ndulue Eze
Ebonyi State University
Abakaliki, Nigeria
Metrics
H-Index
i10-Index
Citation Counts
16
22
1,015
Nnennaya Ajayi
Ebonyi State University
Abakaliki, Nigeria
Metrics
H-Index
i10-Index
Citation Counts
16
20
1,028
Perpetus C Ibekwe
Ebonyi State University
Abakaliki, Nigeria
Metrics
H-Index
i10-Index
Citation Counts
16
21
750
Henry Chukwuemeka
Ebonyi State University
Abakaliki, Nigeria
Metrics
H-Index
i10-Index
Citation Counts
15
21
668
Community Medicine / Public Health
Nutrition
Health Policy & Health Systems / Nutrition
Simon Uguru Nwibo
Ebonyi State University
Abakaliki, Nigeria
Metrics
H-Index
i10-Index
Citation Counts
15
19
690
Agribusiness
Agricultural Marketing
Stanley Chukwudozie Onuoha
Ebonyi State University
Abakaliki, Nigeria
Metrics
H-Index
i10-Index
Citation Counts
15
21
619
Environmental Microbiolgy
Public Health Microbiolgy
Microbial Biotechnology
Water Quality
Boniface Brown Nnamdi Ejikeme
Ebonyi State University
Abakaliki, Nigeria
Metrics
H-Index
i10-Index
Citation Counts
15
20
768
Okoli Eric
Ebonyi State University
Abakaliki, Nigeria
Metrics
H-Index
i10-Index
Citation Counts
15
15
703
food science and technology
Emeka Onwe
Ebonyi State University
Abakaliki, Nigeria
Metrics
H-Index
i10-Index
Citation Counts
14
15
735
Happiness Ogba Oselebe
Ebonyi State University
Abakaliki, Nigeria
Metrics
H-Index
i10-Index
Citation Counts
14
27
990
Plant Breeding and Genetics Crop Improvement)
Paulinus Nnabo
Ebonyi State University
Abakaliki, Nigeria
Metrics
H-Index
i10-Index
Citation Counts
14
20
754
Njoku Isaac Omoke
Ebonyi State University
Abakaliki, Nigeria
Metrics
H-Index
i10-Index
Citation Counts
14
17
467
Orthopaedic Trauma & Limb reconstructive surgery
Maryann Ugochi Ibekwe
Ebonyi State University
Abakaliki, Nigeria
Metrics
H-Index
i10-Index
Citation Counts
14
17
763
Laura Okpala (Nee Igboeli)
Ebonyi State University
Abakaliki, Nigeria
Metrics
H-Index
i10-Index
Citation Counts
14
14
834
Food processing
nutrition
food engineering
food safety
Ifeanyichukwu Iroha
Ebonyi State University
Abakaliki, Nigeria
Metrics
H-Index
i10-Index
Citation Counts
14
23
521
Antimicrobial Resistance
Bacteriology
Pharmaceutical Microbiology
Okechukwu Idumah Okogwu
Ebonyi State University
Abakaliki, Nigeria
Metrics
H-Index
i10-Index
Citation Counts
14
20
767
Water quality
Toxicology
Ecology
Hydrobiology
Sustainability
Uraku Anayo Joseph
Ebonyi State University
Abakaliki, Nigeria
Metrics
H-Index
i10-Index
Citation Counts
14
18
568
Nutraceutical
Nutritional
Medical/Clinical Biochemistry
Philip Obasi
Ebonyi State University
Abakaliki, Nigeria
Metrics
H-Index
i10-Index
Citation Counts
13
21
791
Hydrochemistry
Hydrogeochemistry and hydrogeophysics