- Atmospheric Protection/Air Quality Control/Air Pollution 5
- Ecotoxicology 5
- Environment, general 5
- Industrial and Production Engineering 5
- Materials Science, general 5
- Mechanical Engineering 5
- Optical and Electronic Materials 5
- Physical Chemistry 5
- Waste Water Technology / Water Pollution Control / Water Management / Aquatic Pollution 5
- Environmental Health 4
- Sustainable Development 4
- Characterization and Evaluation of Materials 3
- Electrical Engineering 3
- Environmental Chemistry 3
- Pediatrics 3
- Polymer Sciences 3
- Surfaces and Interfaces, Thin Films 3
- Tribology, Corrosion and Coatings 3
- Algorithms 2
- Catalysis 2