| Environmental Science and Ecology | Lifetime | 227 | US 82 | 99.94 |
| Agricultural, Food and Veterinary Sciences | Lifetime | 483 | US 136 | 99.60 |
| Pollution | Lifetime | 25 | US 6 | 99.86 |
| Plant Science | Lifetime | 267 | US 69 | 99.68 |
| Health, Toxicology and Mutagenesis | Lifetime | 145 | US 56 | 99.42 |
| Aerospace Engineering | Lifetime | 770 | US 271 | 98.51 |
| Ecology | Lifetime | 452 | US 195 | 98.97 |
| Environmental Chemistry | Lifetime | 248 | US 94 | 98.06 |
| Soil Science and Agricultural Water Management | Lifetime | 284 | US 81 | 98.52 |
| Industrial Environmental Engineering | Lifetime | 502 | US 95 | 95.80 |
| Agronomy and Crop Science | Lifetime | 715 | US 260 | 93.40 |
| Pharmaceutical Science | Lifetime | 461 | US 125 | 91.29 |
| Analytical Chemistry | Lifetime | 753 | US 159 | 88.62 |
| Pesticide and Herbicide Environmental Studies | Lifetime | 7 | US 4 | 99.80 |
| Microbial bioremediation and biosurfactants | Lifetime | 9 | US 4 | 99.76 |
| Legume Nitrogen Fixing Symbiosis | Lifetime | 33 | US 7 | 99.72 |
| Agriculture, Soil, Plant Science | Lifetime | 23 | US 5 | 99.24 |
| Chemical Reactions and Isotopes | Lifetime | 26 | US 19 | 99.41 |
| Wastewater Treatment and Nitrogen Removal | Lifetime | 69 | US 7 | 99.48 |
| Toxic Organic Pollutants Impact | Lifetime | 136 | US 36 | 99.28 |
| Pharmaceutical and Antibiotic Environmental Impacts | Lifetime | 153 | US 27 | 99.21 |
| Electromagnetic Compatibility and Measurements | Lifetime | 44 | US 22 | 98.82 |
| Microbial Community Ecology and Physiology | Lifetime | 220 | US 76 | 99.17 |
| Environmental Chemistry and Analysis | Lifetime | 32 | US 9 | 98.54 |
| Agronomic Practices and Intercropping Systems | Lifetime | 265 | US 81 | 98.23 |
| Soil Carbon and Nitrogen Dynamics | Lifetime | 418 | US 118 | 98.84 |
| Polyamine Metabolism and Applications | Lifetime | 182 | US 84 | 97.33 |
| Environmental Toxicology and Ecotoxicology | Lifetime | 325 | US 68 | 98.24 |
| Nematode management and characterization studies | Lifetime | 357 | US 109 | 96.48 |
| Electromagnetic Compatibility and Noise Suppression | Lifetime | 413 | US 113 | 97.03 |
| Water Treatment and Disinfection | Lifetime | 382 | US 101 | 96.67 |
| Coastal wetland ecosystem dynamics | Lifetime | 771 | US 283 | 95.81 |
| Effects and risks of endocrine disrupting chemicals | Lifetime | 929 | US 305 | 95.61 |
| Aquatic Ecosystems and Phytoplankton Dynamics | Lifetime | 994 | US 239 | 95.09 |
| Selenium in Biological Systems | Lifetime | 531 | US 150 | 93.85 |
| Chemical Analysis and Environmental Impact | Lifetime | 137 | US 82 | 92.55 |
| Chemistry and Chemical Engineering | Lifetime | 451 | US 178 | 92.92 |
| Pesticide Residue Analysis and Safety | Lifetime | 843 | US 117 | 93.44 |
| Biocrusts and Microbial Ecology | Lifetime | 590 | US 129 | 92.07 |
| Polymer-Based Agricultural Enhancements | Lifetime | 311 | US 51 | 87.85 |
| Enzyme function and inhibition | Lifetime | 723 | US 357 | 89.86 |
| Cassava research and cyanide | Lifetime | 904 | US 212 | 88.47 |
| Microwave and Dielectric Measurement Techniques | Lifetime | 726 | US 185 | 88.89 |
| Fecal contamination and water quality | Lifetime | 946 | US 425 | 79.36 |
