34.4K(top 0.1%)
papers
1.7M(top 0.1%)
citations
463(top 0.1%)
h-index
771(top 0.1%)
g-index
48.5K
all documents
1.9M
doc citations
14.7K
citing journals
Top Disciplines (by citations)
| # | Discipline | Articles | Citations | R ARank | R CRank |
|---|---|---|---|---|---|
| 1 | Astrophysics | 5,847 | 316,854 | 7 | 8 |
| 2 | Geophysics | 5,462 | 306,263 | 3 | 1 |
| 3 | Spectrum analysis | 3,168 | 184,371 | 5 | 6 |
| 4 | Astronomy | 4,087 | 182,627 | 14 | 14 |
| 5 | Physics | 1,472 | 181,902 | 279 | 166 |
| 6 | Planets | 2,859 | 142,483 | 1 | 1 |
| 7 | Science | 901 | 118,985 | 409 | 260 |
| 8 | Biology | 835 | 102,463 | 428 | 279 |
| 9 | Natural history | 688 | 95,649 | 82 | 152 |
| 10 | Atmospheric Physics | 1,491 | 94,879 | 4 | 1 |
| 11 | Meteorology | 1,016 | 74,412 | 12 | 9 |
| 12 | Atmospheric Chemistry | 830 | 66,327 | 3 | 2 |
| 13 | Climatology | 635 | 58,273 | 14 | 7 |
| 14 | Solar System | 817 | 44,960 | 1 | 1 |
| 15 | Sun | 628 | 38,975 | 1 | 1 |
| 16 | atmospheric models | 483 | 26,925 | 1 | 4 |
| 17 | Earth Sciences | 361 | 26,809 | 40 | 11 |
| 18 | Mathematics | 45 | 22,148 | 2.0K | 36 |
| 19 | Engineering | 62 | 22,069 | 663 | 11 |
| 20 | Nuclear Physics | 463 | 16,387 | 448 | 415 |
| 21 | Optics | 1,181 | 15,393 | 40 | 116 |
| 22 | Quantum Gravity | 242 | 14,593 | 249 | 123 |
| 23 | Environmental Health | 162 | 14,504 | 512 | 255 |
| 24 | Hydrology | 188 | 14,411 | 104 | 45 |
| 25 | Pollution | 132 | 14,396 | 668 | 334 |
| 26 | Environment | 106 | 13,335 | 690 | 377 |
| 27 | Hydrometeorology | 165 | 13,309 | 1 | 1 |
| 28 | Ecology | 154 | 13,087 | 815 | 579 |
| 29 | Water | 122 | 11,079 | 127 | 73 |
| 30 | Technology | 123 | 10,991 | 366 | 84 |
| 31 | water supply | 115 | 10,944 | 67 | 27 |
| 32 | Nuclear Engineering | 378 | 9,783 | 37 | 13 |
| 33 | Biodiversity conservation | 81 | 8,899 | 213 | 140 |
| 34 | exobiology | 156 | 8,805 | 4 | 4 |
| 35 | Climate change | 74 | 8,782 | 107 | 103 |
| 35 | Eutrophication | 74 | 8,782 | 103 | 103 |
| 37 | Photography | 829 | 7,163 | 1 | 1 |
| 38 | Biogeochemical cycles | 54 | 7,127 | 44 | 24 |
| 39 | Statistical physics | 242 | 7,057 | 329 | 294 |
| 40 | space environment | 221 | 6,976 | 1 | 1 |
| 41 | Geochemical Modeling | 96 | 6,827 | 10 | 6 |
| 41 | geological modeling | 96 | 6,827 | 10 | 6 |
| 43 | cryosphere | 100 | 6,625 | 8 | 5 |
| 44 | Glaciology | 231 | 6,469 | 3 | 2 |
| 44 | glaciers | 231 | 6,469 | 2 | 1 |
| 46 | Oceanography | 142 | 6,129 | 129 | 126 |
| 47 | Chemistry | 145 | 5,980 | 2.0K | 1.8K |
| 48 | Control Theory | 74 | 5,974 | 198 | 45 |
| 49 | Environmental Engineering | 59 | 5,953 | 687 | 354 |
| 50 | Planetary Science | 154 | 5,898 | 15 | 9 |
| 51 | Meteorites | 117 | 5,055 | 29 | 22 |
| 52 | sanitation | 43 | 4,881 | 406 | 288 |
| 53 | Biodiversity | 60 | 4,684 | 395 | 175 |
| 54 | Space telescopes | 228 | 4,252 | 1 | 1 |
| 55 | Radio | 57 | 4,056 | 265 | 130 |
| 56 | Geology | 146 | 4,036 | 332 | 331 |
| 57 | Biogeochemistry | 50 | 4,019 | 163 | 97 |
| 58 | Electronics | 57 | 3,872 | 853 | 302 |
| 59 | Medical Laboratory Science | 40 | 3,703 | 431 | 178 |
| 60 | ecosystem | 13 | 3,318 | 654 | 140 |
| 61 | Biogeography | 12 | 3,267 | 555 | 116 |
| 62 | Remote Sensing | 104 | 2,932 | 9 | 9 |
| 63 | Botany | 18 | 2,851 | 2.0K | 871 |
| 64 | Environmental Toxicology | 7 | 2,768 | 1.9K | 290 |
| 65 | Evolution | 20 | 2,767 | 827 | 416 |
| 66 | natural disasters | 40 | 2,552 | 106 | 44 |
| 67 | biological evolution | 11 | 2,537 | 1.3K | 488 |
| 68 | environmental protection | 19 | 2,396 | 1.3K | 476 |
| 69 | Geodesy | 63 | 2,192 | 29 | 18 |
| 70 | Climate | 22 | 1,959 | 48 | 13 |
| 71 | Environmental monitoring | 32 | 1,954 | 1.0K | 674 |
| 72 | global environmental change | 34 | 1,933 | 87 | 66 |
| 73 | hazard mitigation | 23 | 1,931 | 130 | 22 |
| 74 | Geomagnetism | 76 | 1,914 | 81 | 72 |
| 75 | Environmental Policy | 24 | 1,857 | 917 | 581 |
| 76 | Radiation | 84 | 1,597 | 96 | 154 |
| 77 | Plant Ecology | 16 | 1,576 | 708 | 384 |
| 78 | Marine Meteorology | 25 | 1,555 | 78 | 45 |
| 79 | Agriculture | 19 | 1,536 | 837 | 326 |
| 80 | Data Mining | 26 | 1,387 | 293 | 237 |
| 81 | data collection | 25 | 1,385 | 154 | 141 |
| 82 | Geochemistry | 64 | 1,380 | 246 | 285 |
| 83 | Fluid Mechanics | 50 | 1,363 | 440 | 413 |
| 84 | Geographic information systems | 35 | 1,305 | 114 | 41 |
| 85 | Climate Change Mitigation | 9 | 1,301 | 5 | 2 |
| 85 | Global warming | 9 | 1,301 | 5 | 2 |
| 85 | sea level | 9 | 1,301 | 5 | 2 |
| 88 | Marine Biology | 13 | 1,288 | 1.4K | 654 |
| 89 | Software Engineering | 10 | 1,269 | 580 | 140 |
| 90 | optical instruments | 59 | 1,262 | 38 | 69 |
| 91 | radiative transfer | 64 | 1,251 | 3 | 19 |
| 92 | China | 26 | 1,198 | 855 | 323 |
| 93 | Celestial Mechanics | 39 | 1,192 | 16 | 12 |
| 94 | Medicine | 26 | 1,175 | 5.9K | 5.0K |
| 95 | Moon | 55 | 1,143 | 8 | 8 |
| 96 | Geobiology | 55 | 1,136 | 24 | 50 |
| 96 | atmosphere | 48 | 1,136 | 27 | 25 |
| 98 | Research | 35 | 1,100 | 4.0K | 3.8K |
| 99 | Light | 15 | 1,089 | 446 | 477 |
| 100 | bioclimatology | 19 | 1,038 | 207 | 98 |
| 101 | Photonics | 18 | 1,025 | 886 | 668 |
| 102 | air | 14 | 1,003 | 2 | 2 |
| 103 | plant communities | 9 | 993 | 723 | 433 |
| 104 | Radio wave propagation | 46 | 915 | 90 | 69 |
| 105 | Environmental Law | 6 | 909 | 744 | 377 |
| 106 | Geography | 18 | 886 | 967 | 569 |
| 107 | remote sensing technology | 27 | 883 | 1 | 3 |
| 108 | Statistical Mechanics | 38 | 874 | 133 | 89 |
| 108 | Magnetohydrodynamics | 38 | 874 | 57 | 62 |
| 110 | United States | 25 | 831 | 2.3K | 1.7K |
| 111 | Mathematical Physics | 115 | 768 | 310 | 682 |
| 112 | weather | 3 | 760 | 580 | 61 |
| 113 | Microwaves | 24 | 737 | 550 | 349 |
| 114 | Soil Science | 12 | 727 | 777 | 461 |
| 115 | Polymers | 12 | 720 | 3.1K | 1.8K |
| 115 | polymerization | 12 | 720 | 2.5K | 1.5K |
| 117 | lasers | 39 | 698 | 457 | 444 |
| 118 | Signal Processing | 12 | 660 | 1.4K | 925 |
| 119 | Image Processing | 11 | 654 | 1.1K | 696 |
| 120 | Paleoclimatology | 2 | 648 | 967 | 155 |
| 121 | Quantum electronics | 38 | 614 | 361 | 392 |
| 122 | Mineralogy | 16 | 598 | 669 | 530 |
| 122 | emergency management | 13 | 598 | 277 | 108 |
| 124 | Sustainable Development | 9 | 597 | 1.0K | 594 |
| 125 | Nonlinear Dynamics | 25 | 586 | 932 | 939 |
| 126 | Agricultural Ecology | 7 | 584 | 884 | 565 |
| 127 | Superconductors | 70 | 582 | 120 | 195 |
| 128 | Entomology | 4 | 574 | 2.6K | 756 |
| 129 | Hydrogeology | 2 | 571 | 1.0K | 111 |
| 130 | Materials | 18 | 569 | 3.1K | 2.9K |
| 131 | Aerosols | 8 | 560 | 199 | 120 |
| 132 | sustainability | 7 | 549 | 479 | 297 |
| 133 | Stochastic Processes | 6 | 517 | 661 | 135 |
| 134 | Materials Science | 28 | 512 | 2.1K | 2.5K |
| 135 | Molecular Biology | 22 | 500 | 4.5K | 5.5K |
| 136 | Cosmochemistry | 24 | 499 | 42 | 58 |
| 137 | Economic Development | 4 | 479 | 1.5K | 536 |
| 138 | Telecommunication | 13 | 469 | 1.4K | 934 |
| 139 | environmental pollution | 8 | 467 | 3.2K | 2.3K |
| 140 | Artificial Intelligence | 20 | 465 | 1.7K | 1.6K |
| 141 | Developing countries | 12 | 446 | 888 | 569 |
| 142 | forestry | 4 | 445 | 231 | 72 |
| 143 | Forest Management | 7 | 438 | 309 | 125 |
| 144 | Industrial Statistics | 1 | 437 | 520 | 11 |
| 145 | Systems Engineering | 29 | 433 | 537 | 671 |
| 146 | Seaweed | 6 | 430 | 506 | 311 |
| 147 | Algae | 5 | 425 | 737 | 396 |
| 148 | Microbiology | 10 | 420 | 5.2K | 4.9K |
| 149 | Condensed Matter | 15 | 415 | 2.2K | 1.9K |
| 150 | Ceramics | 3 | 414 | 2.0K | 655 |
| 150 | Glass | 3 | 414 | 1.5K | 592 |
| 150 | pottery | 3 | 414 | 1.4K | 584 |
| 153 | Ecosystem management | 9 | 407 | 346 | 294 |
| 154 | Entropy | 3 | 404 | 1.5K | 165 |
| 155 | Solid State Physics | 16 | 395 | 2.3K | 2.0K |
| 156 | weather forecasting | 7 | 394 | 103 | 64 |
| 157 | Structural dynamics | 2 | 392 | 1.0K | 311 |
| 157 | Earthquake Engineering | 2 | 392 | 1.2K | 369 |
| 159 | Epidemiology | 9 | 388 | 3.1K | 2.4K |
| 160 | Forest Ecology | 5 | 386 | 491 | 201 |
| 160 | Radio waves | 20 | 386 | 325 | 428 |
| 162 | Atmospheric Science | 15 | 382 | 21 | 10 |
| 162 | Korea | 15 | 382 | 79 | 35 |
| 162 | Asia | 15 | 382 | 1.1K | 600 |
| 165 | Cosmology | 26 | 363 | 340 | 371 |
| 166 | Scandinavia | 7 | 360 | 435 | 245 |
| 167 | Public Health | 6 | 356 | 5.7K | 3.7K |
| 168 | Automation | 4 | 331 | 2.1K | 1.0K |
| 169 | Distributed Databases | 2 | 328 | 240 | 41 |
| 170 | Optical materials | 9 | 323 | 1.7K | 1.7K |
| 171 | Navigation | 12 | 321 | 196 | 108 |
| 172 | Conservation Biology | 5 | 316 | 934 | 700 |
| 173 | Quantum Optics | 24 | 311 | 199 | 334 |
| 174 | Atomic spectroscopy | 24 | 310 | 227 | 351 |
| 175 | Database Management | 3 | 305 | 721 | 336 |
| 176 | aerosol | 2 | 302 | 141 | 17 |
| 177 | Microbial Ecology | 4 | 294 | 2.5K | 2.1K |
| 178 | extraterrestrial environment | 23 | 292 | 26 | 62 |
| 179 | Biotechnology | 13 | 290 | 4.1K | 4.9K |
| 179 | Paleoceanography | 6 | 290 | 156 | 200 |
| 181 | irrigation | 3 | 289 | 411 | 103 |
| 182 | Petrology | 11 | 287 | 479 | 534 |
| 183 | Laser Spectroscopy | 23 | 286 | 190 | 322 |
| 184 | Molecular Spectroscopy | 11 | 280 | 677 | 613 |
| 185 | Robotics | 5 | 278 | 1.4K | 790 |
| 185 | Hydraulic Engineering | 10 | 278 | 415 | 296 |
| 187 | Plants | 4 | 275 | 2.4K | 1.6K |
| 188 | Fluid Dynamics | 16 | 265 | 366 | 424 |
| 189 | Energy Policy | 4 | 262 | 1.6K | 1.1K |
| 189 | energy resources | 4 | 262 | 596 | 600 |
| 191 | Paleontology | 4 | 260 | 1.4K | 743 |
| 191 | Numerical Analysis | 5 | 260 | 2.0K | 916 |
| 191 | air quality | 5 | 260 | 113 | 53 |
| 194 | Food Security | 3 | 256 | 173 | 74 |
| 195 | Environmental Chemistry | 8 | 255 | 1.6K | 1.8K |
| 196 | nuclear astrophysics | 8 | 250 | 56 | 108 |
| 196 | Plant physiology | 4 | 250 | 2.1K | 1.7K |
| 198 | Volcanoes | 8 | 249 | 159 | 188 |
| 199 | Physical Geography | 12 | 247 | 201 | 215 |
| 200 | Freezing | 16 | 244 | 5 | 6 |
| 201 | astronomical phenomena | 21 | 242 | 28 | 57 |
| 202 | Insects | 1 | 239 | 2.6K | 743 |
| 203 | Cybernetics | 3 | 236 | 1.8K | 994 |
| 204 | Seismology | 8 | 234 | 365 | 305 |
| 205 | plant molecular biology | 2 | 226 | 2.1K | 1.6K |
| 206 | Photochemistry | 5 | 223 | 1.4K | 921 |
| 207 | greenhouse effect | 6 | 217 | 22 | 24 |
| 207 | Carbon | 6 | 217 | 565 | 641 |
| 207 | Carbon dioxide | 6 | 217 | 22 | 24 |
| 210 | Environmental Management | 4 | 206 | 2.6K | 2.3K |
| 210 | environmental indicators | 4 | 206 | 401 | 355 |
| 210 | polar regions | 12 | 206 | 306 | 406 |
| 213 | Biophysics | 6 | 199 | 5.5K | 4.6K |
| 214 | Molecules | 13 | 194 | 793 | 901 |
| 215 | disease vectors | 3 | 192 | 1.2K | 698 |
| 216 | Engineering Geology | 5 | 184 | 1.1K | 828 |
| 217 | Electrical Engineering | 33 | 183 | 1.3K | 1.7K |
| 218 | Probability | 2 | 178 | 1.1K | 534 |
| 218 | Risk Management | 2 | 178 | 1.1K | 477 |
| 218 | Financial management | 2 | 178 | 821 | 488 |
| 218 | Risk | 2 | 178 | 902 | 477 |
| 222 | rivers | 1 | 173 | 693 | 188 |
| 223 | energy conservation | 3 | 172 | 1.9K | 1.4K |
| 224 | Water quality management | 10 | 168 | 1.1K | 1.3K |
| 225 | Statistics | 6 | 166 | 2.3K | 1.8K |
| 226 | Zoonoses | 2 | 164 | 509 | 225 |
| 227 | Bioengineering | 7 | 163 | 3.6K | 4.4K |
| 228 | Algal blooms | 3 | 151 | 220 | 220 |
| 228 | Cyanobacteria | 3 | 151 | 220 | 220 |
| 228 | microalgae | 3 | 151 | 220 | 220 |
| 231 | environmental exposure | 3 | 146 | 2.4K | 1.7K |
| 232 | Computer Graphics | 7 | 145 | 984 | 973 |
| 232 | Microelectronics | 8 | 145 | 1.3K | 1.8K |
| 232 | Electrochemistry | 8 | 145 | 2.5K | 2.4K |
| 232 | Nonlinear systems | 3 | 145 | 688 | 380 |
| 232 | environmental issues | 6 | 145 | 279 | 354 |
| 237 | Agronomy | 4 | 144 | 573 | 568 |
| 238 | Architecture | 1 | 135 | 1.4K | 244 |
| 238 | construction | 1 | 135 | 216 | 103 |
| 240 | Avionics | 10 | 134 | 37 | 48 |
| 241 | Nanotechnology | 6 | 131 | 4.5K | 5.0K |
| 241 | Origin of life | 9 | 131 | 45 | 118 |
| 241 | Organelle biogenesis | 9 | 131 | 85 | 183 |
| 244 | Mass Spectrometry | 8 | 129 | 965 | 1.2K |
| 245 | infrared radiation | 10 | 128 | 119 | 114 |
| 245 | Parasitology | 2 | 128 | 3.4K | 2.1K |
| 245 | Minerals | 2 | 128 | 1.1K | 528 |
| 248 | Chemical Engineering | 7 | 127 | 3.2K | 3.7K |
| 249 | Systems Biology | 3 | 126 | 2.2K | 1.5K |
| 249 | Environmental Geochemistry | 1 | 126 | 1.3K | 334 |
| 251 | Information Technology | 3 | 125 | 3.0K | 1.8K |
| 251 | Earthquakes | 2 | 125 | 570 | 265 |
| 251 | Japan | 5 | 125 | 2.0K | 1.3K |
| 254 | miniaturization | 5 | 120 | 1.9K | 2.3K |
| 255 | Human-Computer Interaction | 3 | 118 | 1.8K | 1.3K |
| 255 | infrared technology | 9 | 118 | 110 | 75 |
| 257 | Earthquake prediction | 1 | 116 | 125 | 18 |
| 258 | Landslides | 2 | 113 | 367 | 298 |
| 259 | Urban Policy | 1 | 108 | 1.1K | 504 |
| 259 | urban forestry | 1 | 108 | 598 | 208 |
| 261 | Metallurgy | 4 | 106 | 2.3K | 1.7K |
| 261 | Electromagnetic waves | 3 | 106 | 319 | 118 |
| 263 | Landscape Ecology | 5 | 103 | 386 | 608 |
| 264 | Land use | 6 | 96 | 664 | 954 |
| 264 | soil conservation | 6 | 96 | 568 | 828 |
| 264 | land degradation | 6 | 96 | 300 | 534 |
| 264 | degradation | 6 | 96 | 300 | 534 |
| 268 | Malaria | 2 | 95 | 1.2K | 845 |
| 269 | air quality management | 2 | 94 | 567 | 479 |
| 270 | disease outbreaks | 2 | 85 | 913 | 871 |
| 271 | Kinetics | 4 | 82 | 502 | 478 |
| 271 | Physical Chemistry | 4 | 82 | 2.6K | 2.8K |
| 271 | Chemical kinetics | 4 | 82 | 767 | 491 |
| 271 | Fractals | 4 | 82 | 509 | 574 |
| 271 | Epidemics | 1 | 82 | 1.2K | 875 |
| 276 | Dynamics | 4 | 81 | 1.8K | 1.4K |
| 276 | biological monitoring | 1 | 81 | 1.2K | 674 |
| 278 | Cartography | 7 | 80 | 247 | 272 |
| 278 | Social Psychology | 3 | 80 | 2.4K | 2.3K |
| 280 | Hydrodynamics | 4 | 79 | 349 | 390 |
| 281 | freshwater biology | 2 | 78 | 1.3K | 1.1K |
| 282 | Photobiology | 2 | 76 | 1.5K | 1.1K |
| 283 | Nuclear Energy | 3 | 74 | 1.1K | 734 |
| 284 | Genomics | 1 | 72 | 6.1K | 4.7K |
| 284 | Social behavior | 2 | 72 | 1.7K | 1.5K |
| 284 | Population | 2 | 72 | 1.4K | 1.0K |
| 284 | Birth control | 2 | 72 | 731 | 634 |
| 288 | Toxicology | 2 | 71 | 6.4K | 5.9K |
| 288 | Biosensors | 2 | 71 | 1.6K | 2.0K |
| 288 | occupational diseases | 2 | 71 | 1.7K | 1.4K |
| 291 | Detectors | 7 | 70 | 1.1K | 1.5K |
| 292 | Biomedical Engineering | 5 | 69 | 5.0K | 6.0K |
| 292 | Natural resources | 3 | 69 | 732 | 822 |
| 294 | Measurement | 2 | 65 | 1.3K | 933 |
| 295 | water resources | 6 | 62 | 136 | 197 |
| 295 | Solitons | 1 | 62 | 829 | 536 |
| 295 | Chaos | 1 | 62 | 829 | 536 |
| 295 | Antarctica | 3 | 62 | 345 | 233 |
| 299 | Zoology | 7 | 60 | 2.2K | 2.7K |
| 300 | Economic History | 6 | 58 | 3.0K | 2.8K |
| 300 | Human Geography | 6 | 58 | 789 | 1.1K |
| 302 | reforestation | 2 | 56 | 248 | 196 |
| 302 | afforestation | 2 | 56 | 248 | 196 |
| 304 | Biochemistry | 3 | 55 | 9.6K | 10.2K |
| 304 | Microscopy | 16 | 55 | 879 | 1.9K |
| 306 | Wireless Communication Systems | 2 | 54 | 3.0K | 2.4K |
| 307 | forest policy | 2 | 52 | 369 | 302 |
| 308 | ADA | 2 | 51 | 81 | 6 |
| 309 | Radiation effects | 2 | 50 | 345 | 453 |
| 310 | Marine Geophysics | 4 | 49 | 218 | 303 |
| 311 | Plant breeding | 1 | 48 | 1.9K | 1.4K |
| 312 | Radiology | 2 | 47 | 2.2K | 1.8K |
| 312 | cosmic rays | 2 | 47 | 170 | 118 |
| 314 | Bioenergetics | 1 | 46 | 1.3K | 1.2K |
| 314 | Volcanology | 1 | 46 | 62 | 52 |
| 314 | Energy metabolism | 1 | 46 | 877 | 872 |
| 314 | Organic Geochemistry | 1 | 46 | 187 | 174 |
| 314 | cell membrane | 1 | 46 | 765 | 786 |
| 314 | Fisheries | 2 | 46 | 2.0K | 1.9K |
| 320 | Restoration Ecology | 1 | 45 | 994 | 758 |
| 320 | Bioelectronics | 1 | 45 | 1.8K | 2.1K |
| 322 | soil microbiology | 1 | 44 | 2.5K | 2.6K |
| 322 | Plant diseases | 1 | 44 | 3.3K | 2.5K |
| 322 | software | 1 | 44 | 1.7K | 1.5K |
| 325 | Fiber Optics | 5 | 43 | 727 | 1.2K |
| 325 | Microwave devices | 7 | 43 | 370 | 655 |
| 327 | Chemical Oceanography | 1 | 42 | 185 | 167 |
| 327 | Solar Energy | 1 | 42 | 1.9K | 1.7K |
| 329 | protein | 2 | 41 | 1.9K | 2.0K |
| 329 | proteins | 2 | 41 | 3.3K | 3.5K |
| 331 | Environmental Geology | 4 | 39 | 1.3K | 2.1K |
| 331 | visualization | 11 | 39 | 939 | 1.6K |
| 333 | Energy Conversion | 2 | 38 | 1.6K | 2.1K |
| 333 | Epigenetics | 1 | 38 | 521 | 375 |
| 333 | Epigenomics | 1 | 38 | 509 | 366 |
| 333 | probabilities | 1 | 38 | 2.1K | 1.2K |
| 337 | microwave communication systems | 3 | 36 | 556 | 649 |
| 337 | optical devices | 5 | 36 | 369 | 691 |
| 339 | Archaeology | 1 | 33 | 2.3K | 1.5K |
| 339 | Diagnostic Imaging | 2 | 33 | 3.3K | 3.3K |
| 341 | Composite Materials | 1 | 32 | 3.3K | 3.0K |
| 342 | Information Theory | 5 | 31 | 1.2K | 2.0K |
| 342 | Molecular Genetics | 1 | 31 | 3.5K | 3.8K |
| 342 | Population Genetics | 1 | 31 | 2.4K | 2.6K |
| 342 | Molecular ecology | 1 | 31 | 2.2K | 2.6K |
| 342 | Scanning electron microscopy | 3 | 31 | 183 | 309 |
| 347 | Surveying | 4 | 30 | 119 | 139 |
| 348 | animals | 1 | 29 | 2.8K | 2.1K |
| 349 | Engineering Mathematics | 2 | 28 | 3.7K | 3.2K |
| 349 | Parasitic Diseases | 1 | 28 | 3.9K | 3.8K |
| 349 | Parasites | 1 | 28 | 2.9K | 2.6K |
| 349 | Mountains | 3 | 28 | 462 | 534 |
| 353 | Estuaries | 5 | 26 | 133 | 450 |
| 354 | Photogrammetry | 3 | 25 | 168 | 233 |
| 354 | Nonlinear Optics | 1 | 25 | 477 | 309 |
| 356 | Analytical Chemistry | 3 | 24 | 5.3K | 7.0K |
| 356 | Water pollution | 1 | 24 | 4.3K | 4.4K |
| 356 | Microfabrication | 3 | 24 | 408 | 806 |
| 356 | Environmental risk assessment | 1 | 24 | 988 | 859 |
| 360 | Food Safety | 1 | 23 | 685 | 558 |
| 360 | Industrial Microbiology | 2 | 23 | 2.9K | 4.2K |
| 360 | Hydraulics | 1 | 23 | 5 | 13 |
| 360 | pressure | 1 | 23 | 5 | 13 |
| 360 | Fluid flow | 1 | 23 | 5 | 13 |
| 360 | Chemical properties | 1 | 23 | 5 | 13 |
| 360 | food industry | 1 | 23 | 778 | 693 |
| 367 | Aerospace Engineering | 7 | 21 | 192 | 457 |
| 367 | Health Policy | 1 | 21 | 5.0K | 4.8K |
| 367 | Public Policy | 1 | 21 | 3.2K | 3.3K |
| 367 | health services accessibility | 1 | 21 | 2.0K | 1.7K |
| 371 | Renewable Energy Sources | 1 | 20 | 3.4K | 4.0K |
| 371 | management | 1 | 20 | 5.3K | 4.6K |
| 371 | plankton | 1 | 20 | 463 | 570 |
| 374 | Tribology | 3 | 19 | 1.2K | 1.7K |
| 374 | Particle Physics | 3 | 19 | 755 | 937 |
| 374 | Biocompatible Materials | 1 | 19 | 6.1K | 6.8K |
| 374 | Wetland ecology | 1 | 19 | 1.1K | 1.1K |
| 374 | wetland management | 1 | 19 | 460 | 546 |
| 374 | Plant cells | 1 | 19 | 2.0K | 2.8K |
| 380 | Nuclear Chemistry | 1 | 18 | 1.8K | 1.6K |
| 380 | Coastal zone management | 1 | 18 | 950 | 1.1K |
| 380 | Radiochemistry | 1 | 18 | 2.0K | 1.7K |
| 380 | Marine resources | 1 | 18 | 839 | 972 |
| 380 | technical education | 5 | 18 | 478 | 1.1K |
| 385 | Mechanical Engineering | 3 | 17 | 2.9K | 3.4K |
| 385 | Computational Chemistry | 1 | 17 | 1.4K | 1.5K |
| 385 | Higher Education | 1 | 17 | 1.1K | 1.0K |
| 385 | Naval Architecture | 4 | 17 | 401 | 559 |
| 389 | Geomorphology | 2 | 16 | 1.2K | 1.9K |
| 389 | Bifurcation Theory | 2 | 16 | 821 | 1.1K |
| 391 | Civil Engineering | 4 | 15 | 1.8K | 2.5K |
| 391 | micromechanics | 2 | 15 | 716 | 1.2K |
| 391 | Molecular evolution | 2 | 15 | 2.2K | 3.6K |
| 391 | X-ray optics | 2 | 15 | 2 | 13 |
| 395 | Information Systems | 2 | 14 | 2.1K | 3.2K |
| 395 | Nanostructured Materials | 3 | 14 | 3.8K | 5.8K |
| 395 | Statistical models | 1 | 14 | 276 | 299 |
| 398 | Surface Chemistry | 1 | 13 | 5.1K | 5.8K |
| 398 | Thin Films | 1 | 13 | 1.3K | 1.3K |
| 400 | Petroleum Engineering | 3 | 12 | 733 | 1.3K |
| 400 | Asthma | 1 | 12 | 1.6K | 2.0K |
| 400 | Petroleum Geology | 3 | 12 | 305 | 763 |
| 400 | X-ray spectroscopy | 3 | 12 | 276 | 607 |
| 400 | Ceramic materials | 1 | 12 | 2.0K | 2.2K |
| 400 | ozone | 1 | 12 | 329 | 440 |
| 400 | disaster relief | 1 | 12 | 474 | 699 |
| 407 | Philosophy | 1 | 11 | 2.8K | 1.9K |
| 407 | Catalysis | 1 | 11 | 4.8K | 5.5K |
| 407 | Forecasting | 1 | 11 | 965 | 1.1K |
| 410 | Solar power plants | 3 | 10 | 230 | 784 |
| 410 | Bacteriology | 2 | 10 | 2.5K | 4.2K |
| 410 | Travel | 1 | 10 | 1.9K | 2.3K |
| 410 | Photovoltaic Cells | 3 | 10 | 233 | 789 |
| 410 | Africa | 2 | 10 | 2.5K | 3.1K |
| 410 | solar cells | 3 | 10 | 541 | 1.5K |
| 416 | Ocean-atmosphere interaction | 2 | 9 | 145 | 233 |
| 416 | Cinematography | 3 | 9 | 136 | 98 |
| 416 | System analysis | 2 | 9 | 3.3K | 4.9K |
| 416 | Television | 3 | 9 | 167 | 156 |
| 420 | Education | 20 | 8 | 1.7K | 6.9K |
| 420 | human behavior | 1 | 8 | 4.2K | 5.7K |
| 420 | Radiometry | 4 | 8 | 155 | 172 |
| 420 | Maps | 2 | 8 | 248 | 517 |
| 420 | Behavior | 1 | 8 | 5.5K | 7.1K |
| 425 | Marine Engineering | 3 | 7 | 526 | 809 |
| 425 | Information Retrieval | 1 | 7 | 964 | 1.3K |
| 425 | Cognitive Science | 2 | 7 | 2.1K | 3.6K |
| 425 | Coral reef biology | 1 | 7 | 335 | 541 |
| 425 | fuel cells | 1 | 7 | 2.2K | 2.8K |
| 425 | Great Lakes | 1 | 7 | 187 | 352 |
| 425 | Eigenvalues | 1 | 7 | 428 | 266 |
| 432 | Neuroimaging | 1 | 6 | 612 | 934 |
| 432 | Electronic Packaging | 2 | 6 | 368 | 727 |
| 432 | Ecohydrology | 1 | 6 | 743 | 1.1K |
| 432 | Expert Systems | 1 | 6 | 578 | 860 |
| 432 | Ocean Engineering | 2 | 6 | 1.3K | 2.3K |
| 432 | Microfluidics | 1 | 6 | 594 | 964 |
| 432 | optical phenomena | 1 | 6 | 308 | 479 |
| 432 | Imaging systems | 2 | 6 | 953 | 1.6K |
| 440 | Computer Engineering | 2 | 5 | 959 | 1.8K |
| 440 | Ergonomics | 5 | 5 | 888 | 2.4K |
| 440 | Quality Control | 1 | 5 | 3.2K | 4.2K |
| 440 | Superconductivity | 1 | 5 | 619 | 866 |
| 440 | Bioorganic chemistry | 1 | 5 | 4.3K | 5.4K |
| 440 | Chemical analysis | 1 | 5 | 2.4K | 3.3K |
| 440 | Plasma devices | 1 | 5 | 419 | 640 |
| 440 | Marine algae | 1 | 5 | 376 | 621 |
| 448 | Number Theory | 1 | 4 | 1.4K | 1.5K |
| 448 | pollutants | 1 | 4 | 3.3K | 4.7K |
| 448 | Environmental pollutants | 1 | 4 | 3.9K | 5.5K |
| 448 | Biometrics | 1 | 4 | 2.2K | 2.9K |
| 448 | computer networks | 3 | 4 | 2.6K | 4.7K |
| 453 | Computer Science | 1 | 3 | 4.1K | 5.2K |
| 453 | Nuclear Fusion | 1 | 3 | 765 | 1.1K |
| 453 | Medical Physics | 2 | 3 | 2.7K | 4.3K |
| 453 | Electromagnetic compatibility | 4 | 3 | 345 | 1.1K |
| 453 | Computer-Aided Design | 1 | 3 | 2.1K | 2.9K |
| 453 | vibration | 1 | 3 | 2.0K | 2.7K |
| 453 | Simulation Methods | 1 | 3 | 1.0K | 1.6K |
| 453 | Neural circuitry | 1 | 3 | 2.9K | 4.1K |
| 453 | actuators | 1 | 3 | 2.4K | 3.6K |
| 453 | Interfaces | 2 | 3 | 124 | 515 |
| 453 | X-rays | 1 | 3 | 1.5K | 2.0K |
| 453 | Semantic web | 1 | 3 | 295 | 583 |
| 453 | fusion reactors | 1 | 3 | 555 | 787 |
| 453 | transducers | 1 | 3 | 2.4K | 3.6K |
| 453 | Aquatic ecology | 1 | 3 | 1.9K | 2.7K |
| 468 | Agricultural Education | 2 | 2 | 210 | 490 |
| 468 | Plant Genetics | 1 | 2 | 1.4K | 2.1K |
| 468 | Telecommunications | 2 | 2 | 1.0K | 2.1K |
| 468 | Databases | 1 | 2 | 644 | 992 |
| 468 | Nanoparticles | 1 | 2 | 3.5K | 4.9K |
| 468 | big data | 1 | 2 | 1.1K | 1.9K |
| 468 | phenomics | 1 | 2 | 116 | 215 |
| 468 | libraries | 1 | 2 | 1.5K | 1.5K |
| 468 | South America | 5 | 2 | 86 | 316 |
| 468 | educational accountability | 1 | 2 | 168 | 344 |
| 478 | Coastal Engineering | 4 | 1 | 116 | 600 |
| 478 | Atmospheric Electricity | 1 | 1 | 82 | 86 |
| 478 | Microwave circuits | 1 | 1 | 455 | 769 |
| 478 | Multimedia Systems | 2 | 1 | 2.4K | 4.2K |
| 478 | System design | 1 | 1 | 596 | 996 |
| 478 | internet | 2 | 1 | 1.9K | 3.7K |
| 478 | World Wide Web | 2 | 1 | 579 | 1.5K |
| 478 | Radio frequency | 1 | 1 | 1.2K | 1.9K |
| 486 | Genetics | 1 | 0 | 7.1K | 9.6K |
| 486 | Industrial Engineering | 1 | 0 | 3.6K | 5.4K |
| 486 | History | 1 | 0 | 2.1K | 2.3K |
| 486 | Nondestructive testing | 1 | 0 | 1.2K | 1.9K |
| 486 | Computer Architecture | 1 | 0 | 753 | 1.3K |
| 486 | Radiation Protection | 1 | 0 | 1.5K | 2.3K |
| 486 | radiation monitoring | 1 | 0 | 1.4K | 2.2K |
| 486 | Microprocessors | 1 | 0 | 617 | 1.2K |
| 486 | Radiobiology | 1 | 0 | 3.2K | 4.2K |
| 486 | Optoelectronic devices | 1 | 0 | 1.9K | 2.8K |
| 486 | ports | 1 | 0 | 400 | 863 |
| 486 | Waterways | 1 | 0 | 178 | 346 |
| 486 | Harbors | 1 | 0 | 232 | 483 |
| 486 | sustainable growth | 1 | 0 | 109 | 309 |
| 486 | lighting | 1 | 0 | 124 | 262 |
| 486 | Radiation dosimetry | 1 | 0 | 1.2K | 1.9K |