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 (873.690) 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
Green Energy Engineering
Integrated Waste Management
Phase Equilibrium Measurement and Computation
VOCs Scrubbing
Metrics
H-Index
i10 Index
Citation Counts
39
128
5,567
* Total H IndexRankings
Ranking Based On Selection: 2
wastewater treatment
CFD
photodegradation
adsorption
nanotechnology
Metrics
H-Index
i10 Index
Citation Counts
35
62
4,006
* Total H IndexRankings
Ranking Based On Selection: 3
Food Chemistry
Grain Science and Technology
Functional Foods
Starches
Food Nutrition
Metrics
H-Index
i10 Index
Citation Counts
33
69
3,438
* Total H IndexRankings
Ranking Based On Selection: 4
Atmospheric remote sensing
climate modelling
space physics
Metrics
H-Index
i10 Index
Citation Counts
33
59
3,437
* Total H IndexRankings
Ranking Based On Selection: 5
Food Science
Enzyme technology
Food product development
Metrics
H-Index
i10 Index
Citation Counts
32
51
4,741
* Total H IndexRankings
Ranking Based On Selection: 6
Dairy Science and Technology
Food Science
Camels and Camel Products
Metrics
H-Index
i10 Index
Citation Counts
32
51
3,063
* Total H IndexRankings
Ranking Based On Selection: 7
Wetlands
Ecology
Hydroecology
Biogeochemistry
Modelling
Metrics
H-Index
i10 Index
Citation Counts
28
52
2,488
* Total H IndexRankings
Ranking Based On Selection: 8
Alloys/Composites Development
Biomaterials
Bio-Tribocorrosion
Metrics
H-Index
i10 Index
Citation Counts
27
65
2,378
* Total H IndexRankings
Ranking Based On Selection: 9
Wireless Sensor Networks
Intelligent Systems
Internet of Vehicles
Embedded Systems
Electronics
Metrics
H-Index
i10 Index
Citation Counts
25
43
2,823
* Total H IndexRankings
Ranking Based On Selection: 10
Process engineering
process control
university governance and management
research management
Metrics
H-Index
i10 Index
Citation Counts
24
64
2,753
* Total H IndexRankings
Ranking Based On Selection: 11
material characterization
physical metallurgy
tribology
residual stress and corrosion
Metrics
H-Index
i10 Index
Citation Counts
23
50
2,183
* Total H IndexRankings
Ranking Based On Selection: 12
Water Resources
Climate Change
Soil erosion
land use changes
Environmental Changes
Metrics
H-Index
i10 Index
Citation Counts
20
28
1,831
* Total H IndexRankings
Ranking Based On Selection: 13
Applied Mechanics
Granular Physics
Postharvest Technology
Food Engineering
Metrics
H-Index
i10 Index
Citation Counts
20
25
2,035
* Total H IndexRankings
Ranking Based On Selection: 14
Materials science
Thin film technologies
Renewable energy materials
Chalcogenide glasses (Linear and non-linear vibrations)
Metrics
H-Index
i10 Index
Citation Counts
19
26
1,472
* Total H IndexRankings
Ranking Based On Selection: 15
Simulation
Machine Learning
Robotics
and Technopreneurship
Metrics
H-Index
i10 Index
Citation Counts
19
30
1,224
* Total H IndexRankings
Ranking Based On Selection: 16
Sedimentology
Carbonates
Geochemistry
Martian Geology
Metrics
H-Index
i10 Index
Citation Counts
18
28
794
* Total H IndexRankings
Ranking Based On Selection: 17
Structural Geology
petrology
field geology
mineralzations
Metrics
H-Index
i10 Index
Citation Counts
17
23
1,014
* Total H IndexRankings
Ranking Based On Selection: 18
hydrological processes
water resources management
climate reconstruction
Metrics
H-Index
i10 Index
Citation Counts
16
23
1,012
* Total H IndexRankings
Ranking Based On Selection: 19
Environmental education
environmental communication
CBNRM
extension
Metrics
H-Index
i10 Index
Citation Counts
16
23
935
* Total H IndexRankings
Ranking Based On Selection: 20
Hydrology
Water Resources Engineering
agricultural water management
remote sensing
modelling
Metrics
H-Index
i10 Index
Citation Counts
16
21
1,187
* Total H IndexRankings
Ranking Based On Selection: 21
Structural Geology/Tectonics
Remote Sensing and Regional geology
Metrics
H-Index
i10 Index
Citation Counts
16
18
769
* Total H IndexRankings
Ranking Based On Selection: 22
Renewable energy
mineral processing
water treatment
Metrics
H-Index
i10 Index
Citation Counts
15
19
1,052
* Total H IndexRankings
Ranking Based On Selection: 23
Sustainable Materials
Biocompsites
Solid Waste Management
Machine Design
Metrics
H-Index
i10 Index
Citation Counts
14
16
1,961
* Total H IndexRankings
Ranking Based On Selection: 24
Database
Advanced Database
Data mining
Networking
Metrics
H-Index
i10 Index
Citation Counts
13
17
596
* Total H IndexRankings
Ranking Based On Selection: 25
Metallurgy
Tribology & Failure Analysis
Tribocorrosion
Advanced Materials
Engineering Education & Technology
Metrics
H-Index
i10 Index
Citation Counts
13
15
1,330
Edison Muzenda
Metrics
H-Index
i10-Index
Citation Counts
39
128
5,567
Green Energy Engineering
Integrated Waste Management
Phase Equilibrium Measurement and Computation
VOCs Scrubbing
Ochieng Aoyi
Metrics
H-Index
i10-Index
Citation Counts
35
62
4,006
wastewater treatment
CFD
photodegradation
adsorption
nanotechnology
Geremew Bultosa
Metrics
H-Index
i10-Index
Citation Counts
33
69
3,438
Food Chemistry
Grain Science and Technology
Functional Foods
Starches
Food Nutrition
Gizaw Mengistu Tsidu
Metrics
H-Index
i10-Index
Citation Counts
33
59
3,437
Atmospheric remote sensing
climate modelling
space physics
Gulelat Desse Haki
Metrics
H-Index
i10-Index
Citation Counts
32
51
4,741
Food Science
Enzyme technology
Food product development
Eyassu Seifu
Metrics
H-Index
i10-Index
Citation Counts
32
51
3,063
Dairy Science and Technology
Food Science
Camels and Camel Products
Michael Murray Hudson
University of Botswana
Gaborone, Botswana
Metrics
H-Index
i10-Index
Citation Counts
28
52
2,488
Wetlands
Ecology
Hydroecology
Biogeochemistry
Modelling
Babatunde Abiodun Obadele
Metrics
H-Index
i10-Index
Citation Counts
27
65
2,378
Alloys/Composites Development
Biomaterials
Bio-Tribocorrosion
Adamu Murtala Zungeru
Metrics
H-Index
i10-Index
Citation Counts
25
43
2,823
Wireless Sensor Networks
Intelligent Systems
Internet of Vehicles
Embedded Systems
Electronics
Paul Serban Agachi
Metrics
H-Index
i10-Index
Citation Counts
24
64
2,753
Process engineering
process control
university governance and management
research management
Oluseyi Philip Oladijo
Metrics
H-Index
i10-Index
Citation Counts
23
50
2,183
material characterization
physical metallurgy
tribology
residual stress and corrosion
Bhagabat P Parida
University of Botswana
Gaborone, Botswana
Metrics
H-Index
i10-Index
Citation Counts
20
28
1,831
Water Resources
Climate Change
Soil erosion
land use changes
Environmental Changes
Edward Dintwa
University of Botswana
Gaborone, Botswana
Metrics
H-Index
i10-Index
Citation Counts
20
25
2,035
Applied Mechanics
Granular Physics
Postharvest Technology
Food Engineering
Cosmas Muiva
Metrics
H-Index
i10-Index
Citation Counts
19
26
1,472
Materials science
Thin film technologies
Renewable energy materials
Chalcogenide glasses (Linear and non-linear vibrations)
Rodrigo S. Jamisola, Jr.
Metrics
H-Index
i10-Index
Citation Counts
19
30
1,224
Simulation
Machine Learning
Robotics
and Technopreneurship
Fulvio Franchi
Metrics
H-Index
i10-Index
Citation Counts
18
28
794
Sedimentology
Carbonates
Geochemistry
Martian Geology
KV Wilbert Kehelpannala
University of Botswana
Gaborone, Botswana
Metrics
H-Index
i10-Index
Citation Counts
17
23
1,014
Structural Geology
petrology
field geology
mineralzations
Ditiro Benson Moalafhi
University of Botswana
Gaborone, Botswana
Metrics
H-Index
i10-Index
Citation Counts
16
23
1,012
hydrological processes
water resources management
climate reconstruction
Olekae Tsompi Thakadu
University of Botswana
Gaborone, Botswana
Metrics
H-Index
i10-Index
Citation Counts
16
23
935
Environmental education
environmental communication
CBNRM
extension
Berhanu F Alemaw
University of Botswana
Gaborone, Botswana
Metrics
H-Index
i10-Index
Citation Counts
16
21
1,187
Hydrology
Water Resources Engineering
agricultural water management
remote sensing
modelling
Read Brown Mthanganyika Mapeo
University of Botswana
Gaborone, Botswana
Metrics
H-Index
i10-Index
Citation Counts
16
18
769
Structural Geology/Tectonics
Remote Sensing and Regional geology
Tirivaviri A. Mamvura
Metrics
H-Index
i10-Index
Citation Counts
15
19
1,052
Renewable energy
mineral processing
water treatment
Albert Uchenna Ude
Metrics
H-Index
i10-Index
Citation Counts
14
16
1,961
Sustainable Materials
Biocompsites
Solid Waste Management
Machine Design
Rajalakshmi Selvaraj
Metrics
H-Index
i10-Index
Citation Counts
13
17
596
Database
Advanced Database
Data mining
Networking
Enoch Nifise Ogunmuyiwa
Metrics
H-Index
i10-Index
Citation Counts
13
15
1,330
Metallurgy
Tribology & Failure Analysis
Tribocorrosion
Advanced Materials
Engineering Education & Technology