| 1 | Science | 1,351 | 182.5K | 264 | 166 |
| 2 | Biology | 1,126 | 143.0K | 309 | 211 |
| 3 | Physics | 835 | 127.2K | 588 | 283 |
| 4 | Oceanography | 1,941 | 124.4K | 3 | 2 |
| 5 | Geophysics | 2,133 | 112.5K | 24 | 18 |
| 6 | Natural history | 598 | 109.6K | 84 | 130 |
| 7 | Marine Biology | 943 | 73.5K | 7 | 2 |
| 8 | Geology | 859 | 64.9K | 37 | 16 |
| 9 | Meteorology | 836 | 50.6K | 26 | 27 |
| 10 | Planets | 842 | 46.8K | 21 | 18 |
| 11 | Ecology | 554 | 46.2K | 284 | 206 |
| 12 | Astronomy | 504 | 39.3K | 320 | 261 |
| 13 | Microbiology | 383 | 38.2K | 489 | 286 |
| 14 | Climatology | 544 | 36.0K | 17 | 17 |
| 15 | Earth Sciences | 312 | 34.3K | 87 | 21 |
| 16 | Geochemistry | 552 | 32.9K | 30 | 25 |
| 17 | Marine Meteorology | 504 | 32.4K | 4 | 3 |
| 18 | Biotechnology | 40 | 28.3K | 2207 | 211 |
| 19 | Chemistry | 369 | 27.6K | 1118 | 716 |
| 20 | Bioengineering | 19 | 26.5K | 2168 | 133 |
| 21 | Biochemical Engineering | 14 | 26.3K | 1844 | 102 |
| 22 | Atmospheric Physics | 446 | 25.2K | 50 | 54 |
| 23 | Biochemistry | 393 | 24.3K | 984 | 681 |
| 24 | Microbial Ecology | 286 | 23.3K | 59 | 70 |
| 25 | Meteorites | 287 | 22.8K | 31 | 26 |
| 26 | Environment | 248 | 22.7K | 346 | 270 |
| 27 | Atmospheric Chemistry | 280 | 19.6K | 49 | 57 |
| 28 | natural products | 192 | 18.6K | 27 | 4 |
| 29 | Research | 225 | 18.1K | 1039 | 492 |
| 30 | Medicine | 223 | 18.1K | 1422 | 862 |
| 31 | Water | 129 | 12.9K | 200 | 97 |
| 32 | biological evolution | 149 | 12.1K | 169 | 158 |
| 33 | Environmental Health | 221 | 11.5K | 391 | 360 |
| 34 | Pollution | 186 | 11.1K | 553 | 516 |
| 35 | Chemical Oceanography | 83 | 11.0K | 7 | 1 |
| 36 | Molecular Biology | 185 | 10.2K | 1251 | 1134 |
| 37 | Biodiversity | 129 | 10.2K | 114 | 69 |
| 38 | biological factors | 54 | 10.0K | 221 | 7 |
| 39 | Biogeochemistry | 103 | 9.4K | 64 | 45 |
| 40 | Evolution | 106 | 8.8K | 193 | 150 |
| 41 | Seismology | 164 | 8.6K | 15 | 12 |
| 42 | Pharmacognosy | 137 | 8.6K | 69 | 28 |
| 43 | Zoology | 165 | 8.4K | 168 | 58 |
| 44 | Developmental Biology | 145 | 7.9K | 200 | 255 |
| 45 | Botany | 142 | 7.8K | 615 | 511 |
| 46 | Neurophysiology | 124 | 7.4K | 437 | 413 |
| 47 | Geomagnetism | 195 | 7.2K | 16 | 10 |
| 48 | Comparative Physiology | 134 | 7.2K | 20 | 11 |
| 49 | Environmental Engineering | 120 | 7.2K | 384 | 330 |
| 50 | Animal Behavior | 122 | 7.2K | 216 | 179 |
| 51 | Statistical physics | 43 | 6.8K | 1342 | 390 |
| 52 | Neuropsychology | 106 | 6.2K | 269 | 173 |
| 53 | Neurology | 98 | 6.1K | 1213 | 1059 |
| 54 | Psychophysiology | 106 | 6.0K | 441 | 387 |
| 55 | Physiology | 137 | 5.7K | 593 | 544 |
| 56 | Optics | 106 | 5.7K | 1073 | 408 |
| 57 | sanitation | 82 | 5.2K | 208 | 256 |
| 58 | Environmental Microbiology | 78 | 5.2K | 74 | 86 |
| 59 | Algae | 126 | 5.0K | 19 | 16 |
| 60 | Hydrometeorology | 58 | 4.5K | 11 | 16 |
| 61 | Biodiversity conservation | 58 | 4.4K | 309 | 362 |
| 62 | optical instruments | 20 | 4.4K | 122 | 21 |
| 63 | Fisheries | 110 | 4.3K | 124 | 100 |
| 64 | Cytology | 61 | 4.3K | 1184 | 1149 |
| 65 | environmental protection | 42 | 4.2K | 810 | 300 |
| 66 | Petrology | 57 | 4.1K | 202 | 112 |
| 67 | Molecular evolution | 59 | 4.1K | 191 | 172 |
| 68 | Water pollution | 67 | 3.9K | 456 | 372 |
| 69 | Molecular Genetics | 62 | 3.8K | 294 | 271 |
| 70 | Mineralogy | 45 | 3.7K | 352 | 149 |
| 71 | Climate change | 42 | 3.7K | 197 | 340 |
| 71 | Eutrophication | 42 | 3.7K | 194 | 338 |
| 73 | Cell Biology | 48 | 3.7K | 1286 | 1228 |
| 74 | Seaweed | 82 | 3.6K | 16 | 18 |
| 75 | Nuclear Physics | 7 | 3.6K | 3539 | 1050 |
| 76 | Biogeochemical cycles | 63 | 3.5K | 23 | 60 |
| 77 | plankton | 68 | 3.5K | 1 | 1 |
| 78 | Marine Pollution | 49 | 3.5K | 122 | 63 |
| 79 | Embryology | 65 | 3.4K | 296 | 327 |
| 80 | Aquatic ecology | 31 | 3.2K | 146 | 14 |
| 81 | Anatomy | 64 | 3.1K | 345 | 319 |
| 82 | Nonlinear Dynamics | 37 | 3.1K | 755 | 325 |
| 83 | Genetics | 29 | 3.0K | 1559 | 1099 |
| 84 | Pharmaceutical Chemistry | 45 | 3.0K | 1194 | 757 |
| 85 | Organic Chemistry | 44 | 2.9K | 1043 | 528 |
| 86 | Marine Ecology | 74 | 2.9K | 30 | 13 |
| 87 | Ocean Engineering | 85 | 2.9K | 181 | 168 |
| 88 | Environmental Policy | 42 | 2.9K | 765 | 583 |
| 89 | atmospheric models | 62 | 2.7K | 101 | 145 |
| 90 | Marine mammals | 62 | 2.6K | 14 | 9 |
| 91 | cryosphere | 51 | 2.6K | 46 | 47 |
| 92 | Microorganisms | 21 | 2.6K | 387 | 212 |
| 93 | Growth | 41 | 2.5K | 290 | 351 |
| 94 | Hydrology | 58 | 2.5K | 496 | 405 |
| 95 | Virology | 14 | 2.4K | 1872 | 1219 |
| 96 | United States | 80 | 2.4K | 919 | 847 |
| 97 | Environmental monitoring | 51 | 2.4K | 855 | 800 |
| 98 | Fluid Mechanics | 32 | 2.3K | 512 | 193 |
| 99 | infection | 11 | 2.3K | 999 | 247 |
| 100 | Analytical Chemistry | 50 | 2.3K | 1425 | 1038 |
| 101 | polar regions | 51 | 2.3K | 64 | 29 |
| 102 | Virulence | 7 | 2.3K | 906 | 307 |
| 103 | Mathematics | 43 | 2.3K | 2391 | 949 |
| 104 | Molecular ecology | 38 | 2.3K | 235 | 274 |
| 105 | Paleoclimatology | 39 | 2.3K | 238 | 149 |
| 106 | Technology | 50 | 2.2K | 1083 | 661 |
| 107 | Infections | 5 | 2.2K | 1144 | 198 |
| 108 | Coral reef biology | 53 | 2.2K | 18 | 21 |
| 109 | Bioorganic chemistry | 35 | 2.2K | 934 | 571 |
| 110 | atmosphere | 23 | 2.2K | 184 | 48 |
| 111 | Animal ecology | 18 | 2.1K | 503 | 199 |
| 112 | Engineering | 37 | 2.1K | 1354 | 480 |
| 113 | Population Genetics | 36 | 2.1K | 293 | 284 |
| 114 | Earthquakes | 68 | 2.1K | 23 | 18 |
| 115 | environmental pollution | 53 | 1.9K | 1159 | 1266 |
| 116 | Fluid Dynamics | 38 | 1.9K | 251 | 128 |
| 117 | Aerosols | 24 | 1.9K | 150 | 71 |
| 118 | Biophysics | 68 | 1.9K | 1588 | 1674 |
| 119 | Continental shelf | 41 | 1.9K | 40 | 43 |
| 120 | Phylogeny | 31 | 1.8K | 167 | 142 |
| 121 | Geodynamics | 41 | 1.8K | 171 | 174 |
| 122 | Ecosystem management | 8 | 1.7K | 398 | 77 |
| 123 | Bacteriology | 14 | 1.7K | 1041 | 608 |
| 124 | water supply | 40 | 1.7K | 210 | 225 |
| 125 | Cell differentiation | 16 | 1.7K | 894 | 674 |
| 126 | Paleoceanography | 21 | 1.7K | 45 | 47 |
| 127 | Clinical Chemistry | 20 | 1.7K | 1385 | 772 |
| 128 | Estuaries | 26 | 1.6K | 31 | 30 |
| 129 | Systems Biology | 42 | 1.6K | 256 | 181 |
| 130 | geological modeling | 42 | 1.6K | 39 | 68 |
| 131 | Geochemical Modeling | 41 | 1.6K | 36 | 66 |
| 132 | Origin of life | 25 | 1.6K | 8 | 5 |
| 132 | Organelle biogenesis | 25 | 1.6K | 16 | 7 |
| 134 | Environmental Law | 20 | 1.5K | 325 | 299 |
| 135 | Thermodynamics | 2 | 1.4K | 1788 | 68 |
| 135 | Thermochemistry | 2 | 1.4K | 702 | 43 |
| 137 | Paleoecology | 34 | 1.4K | 251 | 214 |
| 138 | Cosmochemistry | 50 | 1.4K | 79 | 150 |
| 139 | Marine Geophysics | 43 | 1.4K | 12 | 5 |
| 140 | Data Mining | 28 | 1.4K | 320 | 332 |
| 140 | data collection | 28 | 1.4K | 157 | 236 |
| 142 | Paleogeography | 30 | 1.4K | 235 | 193 |
| 143 | Astrophysics | 42 | 1.3K | 1368 | 1429 |
| 144 | Agriculture | 29 | 1.3K | 705 | 468 |
| 145 | Photochemistry | 20 | 1.3K | 628 | 306 |
| 146 | Light | 39 | 1.2K | 155 | 443 |
| 147 | Public Health | 26 | 1.2K | 2476 | 1951 |
| 148 | Environmental Chemistry | 25 | 1.2K | 649 | 797 |
| 149 | Environmental Toxicology | 19 | 1.1K | 973 | 752 |
| 150 | Ethology | 14 | 1.1K | 753 | 589 |
| 151 | Respiration | 20 | 1.1K | 604 | 457 |
| 152 | gene mapping | 16 | 1.1K | 975 | 753 |
| 153 | Planetary Science | 36 | 1.1K | 99 | 81 |
| 154 | Genetic engineering | 26 | 1.1K | 715 | 742 |
| 155 | soil microbiology | 12 | 1.1K | 793 | 614 |
| 156 | Asia | 15 | 1.0K | 1275 | 330 |
| 157 | Immunology | 11 | 1.0K | 2703 | 1879 |
| 158 | Climate | 26 | 998 | 76 | 101 |
| 159 | ecosystem | 31 | 984 | 340 | 511 |
| 160 | Chemical Ecology | 14 | 962 | 197 | 117 |
| 161 | Medical Microbiology | 9 | 960 | 1702 | 1089 |
| 162 | Transport | 24 | 955 | 118 | 125 |
| 162 | Sea | 24 | 955 | 99 | 91 |
| 162 | Fishery resources | 24 | 955 | 119 | 100 |
| 165 | pheromones | 13 | 930 | 182 | 113 |
| 166 | Plant physiology | 10 | 897 | 1418 | 961 |
| 167 | Pharmacology | 15 | 893 | 3274 | 2389 |
| 168 | Brain | 14 | 887 | 1565 | 1176 |
| 169 | air | 19 | 875 | 38 | 58 |
| 170 | Morphology | 34 | 868 | 136 | 131 |
| 171 | Sedimentology | 17 | 858 | 161 | 132 |
| 172 | Serology | 7 | 834 | 294 | 58 |
| 173 | exobiology | 11 | 824 | 127 | 94 |
| 174 | Genomics | 25 | 821 | 1303 | 1365 |
| 175 | Algal blooms | 16 | 796 | 68 | 102 |
| 175 | Cyanobacteria | 16 | 796 | 68 | 102 |
| 175 | microalgae | 16 | 796 | 68 | 102 |
| 178 | Glaciology | 9 | 794 | 111 | 45 |
| 179 | glaciers | 8 | 781 | 112 | 44 |
| 180 | Geomorphology | 20 | 771 | 522 | 540 |
| 181 | Fishery management | 11 | 766 | 442 | 177 |
| 182 | Molecular cloning | 17 | 759 | 548 | 428 |
| 182 | Genetic recombination | 17 | 759 | 537 | 424 |
| 182 | Recombinant DNA | 17 | 759 | 603 | 460 |
| 185 | Sedimentary rocks | 9 | 758 | 341 | 134 |
| 186 | Energy Policy | 10 | 747 | 1692 | 1297 |
| 186 | Statistical Mechanics | 16 | 747 | 517 | 186 |
| 186 | Magnetohydrodynamics | 16 | 747 | 142 | 97 |
| 189 | Plants | 5 | 737 | 2061 | 983 |
| 190 | Conservation Biology | 20 | 733 | 384 | 450 |
| 191 | Fisheries Law | 8 | 732 | 93 | 48 |
| 191 | fisheries management | 8 | 732 | 93 | 48 |
| 193 | Neurobiology | 12 | 730 | 1106 | 1009 |
| 194 | Physical Chemistry | 25 | 727 | 912 | 987 |
| 195 | Volcanoes | 14 | 697 | 104 | 76 |
| 196 | Marine Geology | 10 | 689 | 299 | 163 |
| 197 | Biomass Energy | 7 | 686 | 2025 | 1232 |
| 197 | nucleic acids | 3 | 686 | 2116 | 1125 |
| 199 | Petroleum Geology | 9 | 682 | 313 | 169 |
| 200 | Sustainable Development | 22 | 665 | 593 | 763 |
| 201 | Surface Chemistry | 12 | 662 | 2467 | 1833 |
| 201 | Colloids | 12 | 662 | 2428 | 1899 |
| 203 | Extreme environments | 9 | 658 | 72 | 31 |
| 204 | Wildlife conservation | 11 | 647 | 658 | 587 |
| 205 | Climate Change Mitigation | 3 | 645 | 38 | 16 |
| 205 | Global warming | 3 | 645 | 126 | 16 |
| 205 | sea level | 3 | 645 | 38 | 16 |
| 208 | Ophthalmology | 17 | 633 | 899 | 775 |
| 208 | Vision | 17 | 633 | 262 | 291 |
| 210 | Perception | 27 | 629 | 689 | 840 |
| 211 | Hydraulic Engineering | 35 | 623 | 261 | 357 |
| 212 | natural disasters | 17 | 621 | 427 | 405 |
| 213 | sustainability | 16 | 614 | 238 | 369 |
| 213 | Protozoa | 6 | 614 | 301 | 138 |
| 215 | Neurochemistry | 9 | 612 | 1728 | 1256 |
| 215 | Computational Biology | 17 | 612 | 1331 | 1270 |
| 215 | Solar System | 11 | 612 | 524 | 415 |
| 218 | Chromosome mapping | 15 | 611 | 899 | 925 |
| 219 | Toxicology | 19 | 603 | 2455 | 2484 |
| 219 | Social behavior | 9 | 603 | 706 | 481 |
| 221 | Nanotechnology | 14 | 597 | 3091 | 2788 |
| 221 | Spectrum analysis | 23 | 597 | 2199 | 2163 |
| 223 | antibiotics | 12 | 593 | 60 | 32 |
| 224 | Visual Perception | 25 | 588 | 636 | 768 |
| 224 | Memory | 25 | 588 | 711 | 887 |
| 224 | Attention | 25 | 588 | 652 | 794 |
| 227 | Industry | 1 | 581 | 518 | 47 |
| 228 | Geodesy | 14 | 572 | 226 | 144 |
| 229 | weather forecasting | 17 | 562 | 53 | 59 |
| 230 | Paleontology | 19 | 540 | 580 | 478 |
| 231 | Genes | 12 | 505 | 552 | 382 |
| 232 | global environmental change | 12 | 502 | 390 | 492 |
| 233 | Waterways | 26 | 497 | 12 | 18 |
| 233 | Harbors | 26 | 497 | 14 | 19 |
| 235 | Cybernetics | 12 | 484 | 682 | 509 |
| 235 | Artificial Intelligence | 12 | 484 | 2365 | 1747 |
| 237 | Biogeography | 12 | 483 | 553 | 731 |
| 238 | DNA polymerases | 1 | 477 | 965 | 480 |
| 239 | Biomedical Engineering | 10 | 474 | 3651 | 2674 |
| 240 | Mass Spectrometry | 9 | 463 | 805 | 558 |
| 241 | Agricultural Ecology | 9 | 459 | 706 | 700 |
| 242 | Acoustics | 18 | 453 | 53 | 8 |
| 243 | energy resources | 5 | 451 | 1190 | 1015 |
| 244 | Marine invertebrates | 26 | 435 | 12 | 17 |
| 245 | Plant Ecology | 6 | 428 | 1502 | 1118 |
| 246 | Epidemiology | 30 | 427 | 1421 | 2208 |
| 247 | Geography | 12 | 421 | 1341 | 1088 |
| 247 | Birds | 12 | 421 | 665 | 430 |
| 249 | Neurons | 5 | 419 | 631 | 958 |
| 250 | Microscopy | 10 | 417 | 1016 | 572 |
| 251 | Psychology | 11 | 416 | 3352 | 2622 |
| 252 | nanoscience | 5 | 406 | 2744 | 1925 |
| 253 | Nervous system | 7 | 405 | 2033 | 1747 |
| 253 | plant molecular biology | 4 | 405 | 1562 | 1166 |
| 255 | United Kingdom | 2 | 400 | 2424 | 1008 |
| 256 | ports | 20 | 399 | 41 | 70 |
| 257 | Economic Development | 5 | 397 | 1537 | 1014 |
| 257 | Sound | 22 | 397 | 191 | 132 |
| 259 | Archaeology | 17 | 395 | 610 | 532 |
| 260 | Radiation | 23 | 391 | 808 | 958 |
| 261 | Histology | 15 | 387 | 947 | 1151 |
| 261 | Industrial Microbiology | 10 | 387 | 1203 | 1263 |
| 263 | Robotics | 4 | 383 | 1709 | 760 |
| 264 | Radio wave propagation | 9 | 380 | 469 | 183 |
| 265 | Anthropology | 5 | 365 | 1454 | 601 |
| 265 | Human evolution | 5 | 365 | 358 | 273 |
| 267 | Computer Science | 3 | 363 | 2758 | 692 |
| 268 | Environmental Management | 12 | 360 | 1700 | 2169 |
| 268 | Freeze-Drying | 7 | 360 | 247 | 102 |
| 268 | Hypothermia | 7 | 360 | 247 | 102 |
| 268 | Freeze Drying | 7 | 360 | 247 | 102 |
| 272 | computer networks | 2 | 358 | 3362 | 1163 |
| 273 | cell physiology | 10 | 339 | 974 | 1244 |
| 274 | Genetic variation | 6 | 315 | 68 | 28 |
| 274 | hazard mitigation | 12 | 315 | 363 | 433 |
| 276 | weather | 11 | 313 | 203 | 250 |
| 277 | California | 11 | 308 | 220 | 188 |
| 278 | biological invasions | 8 | 300 | 362 | 339 |
| 279 | Scandinavia | 7 | 297 | 525 | 386 |
| 280 | Geotechnical Engineering | 3 | 285 | 821 | 370 |
| 280 | rivers | 2 | 285 | 438 | 119 |
| 282 | Developmental Genetics | 7 | 283 | 425 | 632 |
| 283 | Nuclear Energy | 4 | 282 | 1137 | 463 |
| 284 | Coastal zone management | 10 | 275 | 284 | 316 |
| 285 | Political Geography | 1 | 268 | 552 | 134 |
| 286 | Analytical Biochemistry | 10 | 266 | 1072 | 1110 |
| 287 | Organic Geochemistry | 6 | 265 | 271 | 298 |
| 288 | Reproduction | 11 | 262 | 1508 | 1610 |
| 289 | Soil Mechanics | 4 | 256 | 1161 | 754 |
| 290 | Japan | 6 | 252 | 1613 | 842 |
| 291 | Medical innovations | 4 | 248 | 1073 | 1396 |
| 291 | Entomology | 8 | 248 | 1822 | 1268 |
| 293 | Magnetic Resonance Spectroscopy | 4 | 246 | 1287 | 709 |
| 293 | viruses | 2 | 246 | 2119 | 1430 |
| 295 | biomimicry | 3 | 244 | 179 | 80 |
| 296 | Rock Mechanics | 3 | 242 | 1065 | 621 |
| 297 | Molecular structure | 3 | 240 | 3027 | 1707 |
| 297 | Plant cells | 2 | 240 | 1506 | 1365 |
| 299 | Engineering Geology | 5 | 235 | 1273 | 992 |
| 300 | Ichthyology | 7 | 233 | 288 | 124 |
| 301 | Public Policy | 6 | 231 | 1424 | 1173 |
| 302 | Culture techniques | 12 | 230 | 120 | 166 |
| 303 | Soil Science | 3 | 229 | 2217 | 1464 |
| 304 | Condensed Matter | 2 | 226 | 4316 | 2354 |
| 305 | Solutions | 10 | 222 | 150 | 125 |
| 306 | Landscape Ecology | 2 | 219 | 678 | 368 |
| 307 | Signal Processing | 12 | 218 | 1138 | 1165 |
| 307 | bioclimatology | 15 | 218 | 288 | 540 |
| 309 | Environmental pollutants | 9 | 217 | 1575 | 1903 |
| 309 | Membranes | 6 | 217 | 1480 | 1603 |
| 311 | nuclear magnetic resonance | 2 | 214 | 1537 | 713 |
| 312 | Chemical Engineering | 5 | 210 | 4236 | 3765 |
| 313 | Gene expression regulation | 6 | 209 | 818 | 912 |
| 313 | Genetic regulation | 6 | 209 | 979 | 1216 |
| 315 | Geobiology | 11 | 204 | 224 | 344 |
| 316 | Molecular Microbiology | 2 | 202 | 1238 | 1003 |
| 317 | Marine resources | 7 | 195 | 415 | 426 |
| 318 | glycoproteins | 3 | 192 | 571 | 412 |
| 318 | Glycoconjugates | 3 | 192 | 571 | 412 |
| 318 | glycolipids | 3 | 192 | 571 | 412 |
| 321 | venom | 3 | 189 | 965 | 553 |
| 321 | Toxins | 3 | 189 | 1085 | 613 |
| 323 | Hydrogeology | 6 | 188 | 595 | 489 |
| 324 | Atmospheric Science | 6 | 187 | 135 | 130 |
| 324 | Therapeutics | 5 | 187 | 1730 | 1781 |
| 326 | embryonic development | 6 | 186 | 298 | 319 |
| 326 | Landslides | 2 | 186 | 356 | 237 |
| 328 | Pediatrics | 5 | 185 | 2528 | 2575 |
| 329 | Proteomics | 2 | 184 | 1709 | 1125 |
| 330 | Aquaculture | 9 | 181 | 983 | 1098 |
| 331 | mammals | 15 | 176 | 427 | 727 |
| 332 | Pediatric Neurology | 1 | 174 | 1922 | 1462 |
| 333 | Host-parasite interactions | 5 | 173 | 1172 | 1685 |
| 333 | power plants | 2 | 173 | 8 | 19 |
| 335 | Environmental Geology | 2 | 172 | 2308 | 1402 |
| 336 | enzymes | 9 | 171 | 1007 | 1438 |
| 337 | Synthetic biology | 6 | 169 | 235 | 266 |
| 338 | Catalysis | 3 | 164 | 3784 | 3199 |
| 339 | pollutants | 7 | 162 | 1482 | 1941 |
| 340 | Bacteria | 3 | 161 | 432 | 487 |
| 341 | Medical Laboratory Science | 5 | 158 | 1984 | 2093 |
| 342 | Coastal Engineering | 16 | 157 | 16 | 35 |
| 343 | China | 10 | 156 | 1903 | 2251 |
| 344 | emergency management | 4 | 154 | 860 | 661 |
| 345 | Nanostructured Materials | 3 | 152 | 3554 | 2938 |
| 346 | Marine Biotechnology | 3 | 146 | 260 | 207 |
| 346 | Plant Biotechnology | 1 | 146 | 1604 | 780 |
| 346 | Plant genetic engineering | 1 | 146 | 1758 | 1036 |
| 349 | Oligosaccharide | 2 | 145 | 467 | 373 |
| 349 | Carbohydrates | 2 | 145 | 674 | 476 |
| 351 | Lipids | 1 | 143 | 2566 | 1510 |
| 351 | Trace elements | 3 | 143 | 286 | 282 |
| 353 | Underwater acoustics | 9 | 142 | 11 | 22 |
| 354 | Cytogenetics | 6 | 141 | 1398 | 1979 |
| 354 | Proteome | 1 | 141 | 2240 | 1394 |
| 356 | radiative transfer | 9 | 138 | 373 | 453 |
| 356 | freshwater biology | 6 | 138 | 729 | 798 |
| 358 | Population | 6 | 136 | 802 | 870 |
| 359 | Immunopharmacology | 1 | 132 | 2070 | 1012 |
| 359 | Immunotoxicology | 1 | 132 | 737 | 154 |
| 361 | Surveying | 3 | 131 | 204 | 42 |
| 362 | Korea | 4 | 130 | 321 | 140 |
| 363 | Plant diseases | 3 | 129 | 2278 | 1678 |
| 364 | Remote Sensing | 5 | 128 | 1376 | 979 |
| 365 | biological monitoring | 8 | 127 | 258 | 488 |
| 366 | Radiobiology | 5 | 126 | 1422 | 1612 |
| 367 | Wireless Communication Systems | 4 | 122 | 2140 | 1523 |
| 368 | Archaea | 2 | 120 | 43 | 40 |
| 369 | plant communities | 1 | 119 | 1902 | 1320 |
| 370 | Plate Tectonics | 7 | 116 | 145 | 221 |
| 370 | drug therapy | 3 | 116 | 2899 | 2623 |
| 372 | Freshwater Ecology | 5 | 115 | 178 | 96 |
| 372 | Aquatic animals | 5 | 115 | 133 | 130 |
| 374 | Classification | 1 | 113 | 619 | 200 |
| 374 | genome | 4 | 113 | 1737 | 2272 |
| 376 | calcification | 2 | 112 | 802 | 657 |
| 376 | human behavior | 4 | 112 | 2523 | 3310 |
| 378 | Mechanics | 5 | 111 | 1253 | 985 |
| 379 | Ornithology | 2 | 109 | 1385 | 785 |
| 379 | Materials | 5 | 109 | 5540 | 5625 |
| 379 | Stem cells | 2 | 109 | 2278 | 1961 |
| 379 | Cognition | 3 | 109 | 1909 | 1736 |
| 383 | environmental indicators | 4 | 108 | 1137 | 1478 |
| 383 | Water chemistry | 9 | 108 | 63 | 225 |
| 385 | Medical Technology | 4 | 107 | 1885 | 1934 |
| 385 | Developmental Immunology | 3 | 107 | 951 | 888 |
| 385 | Biomass | 3 | 107 | 740 | 951 |
| 388 | biofuels | 1 | 106 | 629 | 558 |
| 388 | shellfish | 6 | 106 | 103 | 121 |
| 388 | Australia | 5 | 106 | 1772 | 1630 |
| 391 | Environmental Science | 3 | 105 | 9 | 12 |
| 391 | animals | 7 | 105 | 968 | 1049 |
| 393 | Greenhouse gases | 2 | 104 | 492 | 469 |
| 393 | Biotelemetry | 7 | 104 | 26 | 67 |
| 395 | actuators | 1 | 103 | 3668 | 2590 |
| 395 | transducers | 1 | 103 | 3668 | 2590 |
| 397 | Neural circuitry | 3 | 102 | 2336 | 2260 |
| 397 | Sites | 3 | 102 | 624 | 724 |
| 399 | Molecular Pharmacology | 1 | 101 | 1524 | 1112 |
| 399 | Cytoskeleton | 4 | 101 | 254 | 336 |
| 401 | Developmental Psychology | 1 | 98 | 1920 | 1189 |
| 401 | Child | 1 | 98 | 4660 | 2553 |
| 401 | Child Development | 1 | 98 | 3550 | 2242 |
| 401 | Child psychology | 1 | 98 | 2735 | 1815 |
| 401 | behavior modification | 1 | 98 | 666 | 539 |
| 401 | child behavior | 1 | 98 | 741 | 493 |
| 401 | children | 1 | 98 | 1083 | 585 |
| 408 | cell movement | 3 | 95 | 259 | 357 |
| 408 | Immunity | 4 | 95 | 2078 | 3004 |
| 410 | air quality management | 2 | 94 | 826 | 634 |
| 410 | indoor air pollution | 2 | 94 | 599 | 460 |
| 410 | Ventilation | 2 | 94 | 804 | 542 |
| 410 | Sick building syndrome | 2 | 94 | 599 | 460 |
| 414 | Structural dynamics | 4 | 93 | 1075 | 1298 |
| 415 | Ecological Genetics | 5 | 87 | 559 | 595 |
| 415 | Biodegradation | 3 | 87 | 866 | 1022 |
| 415 | Water Microbiology | 3 | 87 | 523 | 560 |
| 415 | Fouling | 3 | 87 | 255 | 351 |
| 419 | occupational diseases | 4 | 85 | 862 | 1223 |
| 420 | Bioinorganic chemistry | 1 | 84 | 2460 | 1612 |
| 420 | Parasitology | 11 | 84 | 1576 | 2658 |
| 422 | Maritime Law | 4 | 83 | 66 | 26 |
| 422 | Marine Conservation | 4 | 83 | 52 | 22 |
| 422 | Geothermal Energy | 4 | 83 | 224 | 290 |
| 422 | Law of the Sea | 4 | 83 | 52 | 22 |
| 426 | wind erosion | 2 | 81 | 162 | 168 |
| 426 | Diet | 3 | 81 | 2577 | 3098 |
| 428 | Solid State Physics | 2 | 80 | 4747 | 3696 |
| 429 | Behavioral Genetics | 1 | 79 | 481 | 382 |
| 429 | Fire ecology | 1 | 79 | 157 | 154 |
| 429 | Biocompatible Materials | 5 | 79 | 3491 | 4938 |
| 432 | Oxidative stress | 1 | 78 | 2198 | 1882 |
| 432 | Cellular senescence | 1 | 78 | 1519 | 1231 |
| 434 | Earthquake Engineering | 5 | 77 | 1126 | 1502 |
| 434 | Water quality management | 4 | 77 | 1954 | 2074 |
| 436 | Marine biodiversity | 7 | 72 | 162 | 208 |
| 436 | Bioinformatics | 2 | 72 | 3012 | 2691 |
| 438 | Pharmacogenetics | 1 | 71 | 2120 | 1636 |
| 438 | Genetic therapy | 1 | 71 | 2361 | 1914 |
| 440 | Physical organic chemistry | 4 | 70 | 1444 | 1601 |
| 441 | Obesity | 2 | 68 | 2946 | 3084 |
| 441 | Biomolecules | 1 | 68 | 977 | 836 |
| 441 | Structure-activity relationship | 1 | 68 | 1027 | 490 |
| 441 | Thorax | 1 | 68 | 970 | 816 |
| 445 | Agricultural Chemistry | 4 | 67 | 2461 | 2968 |
| 445 | Ceramic materials | 1 | 67 | 2475 | 1626 |
| 445 | Physical fitness | 2 | 67 | 1489 | 1355 |
| 448 | protein | 3 | 65 | 1517 | 1657 |
| 448 | proteins | 3 | 65 | 2625 | 2783 |
| 450 | Photography | 24 | 64 | 1242 | 1252 |
| 451 | Mathematical Physics | 4 | 63 | 3324 | 2813 |
| 451 | Radioisotopes | 3 | 63 | 1498 | 1257 |
| 453 | Metallurgy | 2 | 62 | 3292 | 2647 |
| 453 | Invertebrates | 5 | 62 | 526 | 821 |
| 453 | Metals | 2 | 62 | 2982 | 2610 |
| 456 | Critical Care | 1 | 61 | 3087 | 2798 |
| 456 | Critical Care Medicine | 1 | 61 | 2725 | 2671 |
| 456 | Parasitic Diseases | 8 | 61 | 1601 | 2984 |
| 459 | Health Policy | 4 | 59 | 2572 | 3275 |
| 460 | Chromosomes | 1 | 58 | 1852 | 1562 |
| 461 | Soil biology | 1 | 57 | 1574 | 1575 |
| 462 | health services accessibility | 4 | 56 | 1004 | 1289 |
| 462 | Wetland ecology | 4 | 56 | 404 | 625 |
| 464 | toxicity testing | 2 | 55 | 1124 | 1212 |
| 464 | Navigation | 5 | 55 | 348 | 415 |
| 466 | Bioacoustics | 5 | 54 | 51 | 107 |
| 466 | Cardiovascular system | 1 | 54 | 2814 | 2836 |
| 466 | Steroids | 1 | 54 | 1879 | 1489 |
| 469 | Image Processing | 4 | 53 | 2102 | 2712 |
| 469 | soil conservation | 1 | 53 | 1636 | 1258 |
| 469 | soil pollution | 1 | 53 | 1280 | 830 |
| 469 | Mollusks | 3 | 53 | 279 | 198 |
| 473 | Ecophysiology | 1 | 52 | 566 | 357 |
| 473 | Solar Energy | 2 | 52 | 2420 | 2748 |
| 473 | dietary supplements | 1 | 52 | 1636 | 1366 |
| 476 | Turbulence | 4 | 50 | 223 | 316 |
| 476 | Developing countries | 2 | 50 | 3665 | 3267 |
| 478 | Social Sciences | 3 | 49 | 4693 | 3915 |
| 478 | visualization | 8 | 49 | 1101 | 1217 |
| 478 | Insects | 6 | 49 | 1264 | 1804 |
| 481 | Information Technology | 1 | 48 | 4901 | 3027 |
| 481 | Chromatography | 1 | 48 | 3035 | 2374 |
| 481 | Chromatographic analysis | 1 | 48 | 3466 | 2555 |
| 481 | mathematical analysis | 1 | 48 | 3668 | 2315 |
| 485 | Sociology | 1 | 47 | 5829 | 4096 |
| 485 | Medical Anthropology | 1 | 47 | 2456 | 2451 |
| 485 | Groundwater | 3 | 47 | 811 | 980 |
| 485 | Oligosaccharides | 1 | 47 | 579 | 492 |
| 485 | Behavior | 5 | 47 | 3024 | 5295 |
| 490 | Microbial Biotechnology | 3 | 46 | 1221 | 1747 |
| 491 | Renewable Energy Sources | 2 | 45 | 3655 | 4657 |
| 491 | Chemical analysis | 2 | 45 | 1654 | 1846 |
| 491 | coastal areas | 3 | 45 | 75 | 104 |
| 491 | coastal archaeology | 3 | 45 | 75 | 104 |
| 491 | islands | 3 | 45 | 75 | 104 |
| 496 | Materials Science | 3 | 44 | 5433 | 5882 |
| 497 | Green Chemistry | 3 | 43 | 1998 | 2948 |
| 497 | Sustainable Engineering | 3 | 43 | 1963 | 2720 |
| 497 | clay | 1 | 43 | 1542 | 1591 |
| 497 | clay minerals | 1 | 43 | 603 | 562 |
| 501 | Information Systems | 1 | 42 | 2945 | 2329 |
| 501 | Cosmology | 1 | 42 | 2294 | 1480 |
| 501 | Polymers | 3 | 42 | 5028 | 5609 |
| 501 | nuclear astrophysics | 1 | 42 | 892 | 765 |
| 505 | Signal Transduction | 3 | 41 | 1714 | 2578 |
| 505 | Contraception | 2 | 41 | 929 | 1114 |
| 505 | Reproductive health | 2 | 41 | 1214 | 1374 |
| 505 | Mitochondrial DNA | 5 | 41 | 116 | 150 |
| 505 | aerosol | 2 | 41 | 578 | 630 |
| 505 | Birth control | 2 | 41 | 697 | 899 |
| 511 | Minerals | 2 | 40 | 1229 | 1352 |
| 512 | Fertilization | 1 | 39 | 160 | 160 |
| 512 | gametes | 1 | 39 | 160 | 160 |
| 512 | Primates | 1 | 39 | 1374 | 1121 |
| 515 | Petroleum Engineering | 2 | 38 | 1088 | 1156 |
| 515 | Electronics | 4 | 38 | 3759 | 4126 |
| 517 | Ecological Engineering | 2 | 37 | 939 | 1471 |
| 517 | Ocean-atmosphere interaction | 2 | 37 | 148 | 82 |
| 517 | Africa | 2 | 37 | 2457 | 1983 |
| 517 | Middle East | 2 | 37 | 1469 | 1161 |
| 517 | wetland management | 2 | 37 | 260 | 369 |
| 522 | Engineering Mathematics | 3 | 35 | 3126 | 3092 |
| 522 | Optical materials | 1 | 35 | 4027 | 3957 |
| 524 | Primary health care | 2 | 34 | 2754 | 3136 |
| 525 | biological agents | 3 | 33 | 800 | 482 |
| 525 | Synapses | 1 | 33 | 580 | 634 |
| 527 | vibration | 2 | 32 | 1760 | 1931 |
| 527 | nuclear magnetic resonance spectroscopy | 2 | 32 | 1096 | 1115 |
| 527 | oceans | 1 | 32 | 29 | 12 |
| 527 | ocean temperature | 1 | 32 | 30 | 12 |
| 527 | NMR | 2 | 32 | 822 | 828 |
| 527 | magnetic resonance | 2 | 32 | 858 | 859 |
| 533 | Composite Materials | 2 | 31 | 3571 | 4297 |
| 533 | Moon | 2 | 31 | 285 | 270 |
| 533 | Luminescence | 2 | 31 | 1931 | 2076 |
| 533 | bioluminescence | 2 | 31 | 585 | 535 |
| 533 | radar | 1 | 31 | 483 | 365 |
| 533 | Sonar | 1 | 31 | 424 | 326 |
| 533 | body temperature | 2 | 31 | 714 | 971 |
| 533 | Isotopes | 1 | 31 | 314 | 206 |
| 541 | Medical Physics | 1 | 30 | 2940 | 2575 |
| 541 | Electrochemistry | 1 | 30 | 5696 | 4989 |
| 541 | Electrochemical Analysis | 1 | 30 | 2635 | 2499 |
| 541 | extraterrestrial environment | 3 | 30 | 735 | 1040 |
| 545 | Applied Sciences | 1 | 29 | 54 | 117 |
| 545 | Numerical Analysis | 3 | 29 | 2758 | 3118 |
| 545 | Applied Mechanics | 1 | 29 | 54 | 117 |
| 545 | Dynamics | 2 | 29 | 2690 | 2529 |
| 545 | Combustion | 2 | 29 | 1711 | 2087 |
| 550 | Immunopathology | 1 | 28 | 2519 | 2656 |
| 551 | Humanities | 1 | 27 | 4085 | 2351 |
| 551 | Tourism | 2 | 27 | 2193 | 2781 |
| 551 | Quantum theory | 1 | 27 | 1810 | 1546 |
| 551 | Radiation effects | 2 | 27 | 942 | 1465 |
| 551 | Marine algae | 2 | 27 | 193 | 284 |
| 556 | Palynology | 1 | 26 | 568 | 466 |
| 557 | Biological Systems | 1 | 25 | 1691 | 1532 |
| 557 | Biofilms | 1 | 25 | 408 | 560 |
| 557 | Plant breeding | 4 | 25 | 859 | 1662 |
| 557 | eugenics | 4 | 25 | 535 | 1339 |
| 557 | Breeding | 4 | 25 | 1250 | 2265 |
| 562 | Audiology | 1 | 24 | 1441 | 1436 |
| 562 | Mobile Computing | 1 | 24 | 2307 | 1744 |
| 562 | Biomechanics | 3 | 24 | 1750 | 2748 |
| 562 | Cell death | 1 | 24 | 2149 | 2620 |
| 562 | drugs | 2 | 24 | 3272 | 4270 |
| 562 | Cancer | 1 | 24 | 6176 | 6474 |
| 568 | Hydraulics | 1 | 23 | 7 | 29 |
| 568 | pressure | 1 | 23 | 7 | 29 |
| 568 | Fluid flow | 1 | 23 | 7 | 29 |
| 568 | Chemical properties | 1 | 23 | 7 | 29 |
| 568 | Parasites | 2 | 23 | 2344 | 3014 |
| 568 | Dementia | 4 | 23 | 1616 | 1982 |
| 568 | Alzheimer's disease | 4 | 23 | 1635 | 2103 |
| 575 | Endocrinology | 1 | 22 | 5362 | 5727 |
| 575 | Ergonomics | 1 | 22 | 1992 | 1804 |
| 575 | Bioenergetics | 1 | 22 | 1644 | 1883 |
| 575 | Technology Assessment | 2 | 22 | 517 | 1179 |
| 575 | Energy metabolism | 1 | 22 | 1130 | 1266 |
| 575 | Microcirculation | 2 | 22 | 701 | 1113 |
| 575 | Multiphase Flow | 1 | 22 | 728 | 862 |
| 575 | Crystallography | 2 | 22 | 2348 | 2121 |
| 575 | X-ray crystallography | 2 | 22 | 855 | 989 |
| 575 | Blood vessels | 2 | 22 | 565 | 931 |
| 575 | drug development | 2 | 22 | 1640 | 2866 |
| 575 | Prospecting | 2 | 22 | 143 | 195 |
| 587 | Energy Conversion | 1 | 21 | 2105 | 2422 |
| 587 | Energy Storage | 1 | 21 | 2290 | 2335 |
| 587 | fuel cells | 1 | 21 | 2182 | 2419 |
| 587 | Photobiology | 2 | 21 | 2096 | 2890 |
| 587 | System analysis | 3 | 21 | 3010 | 4251 |
| 587 | inscriptions | 2 | 21 | 93 | 71 |
| 593 | Micropaleontology | 4 | 20 | 92 | 256 |
| 593 | Ethnoarchaeology | 1 | 20 | 376 | 436 |
| 593 | Control Theory | 1 | 20 | 2913 | 2553 |
| 593 | Foraminifera | 2 | 20 | 135 | 239 |
| 597 | Wetland conservation | 2 | 19 | 480 | 831 |
| 597 | air quality | 1 | 19 | 656 | 735 |
| 597 | Antarctica | 3 | 19 | 653 | 1008 |
| 597 | Wetlands | 2 | 19 | 493 | 832 |
| 601 | Health Services Research | 1 | 18 | 3611 | 3785 |
| 601 | Histochemistry | 2 | 18 | 1625 | 2263 |
| 601 | Paleobiology | 1 | 18 | 729 | 638 |
| 604 | Nutrition | 3 | 17 | 5312 | 8255 |
| 604 | Systems Engineering | 1 | 17 | 4033 | 3652 |
| 604 | Latin America | 3 | 17 | 1614 | 1674 |
| 604 | Porous materials | 2 | 17 | 1124 | 1535 |
| 608 | Algorithms | 1 | 16 | 1407 | 1319 |
| 608 | Soil dynamics | 1 | 16 | 892 | 1102 |
| 608 | Gene expression | 1 | 16 | 624 | 789 |
| 608 | Cell division | 1 | 16 | 1187 | 1566 |
| 608 | disease outbreaks | 1 | 16 | 1170 | 1626 |
| 608 | Epidemics | 1 | 16 | 1103 | 1589 |
| 614 | Watershed management | 1 | 15 | 601 | 602 |
| 614 | mycoses | 2 | 15 | 1303 | 2223 |
| 614 | Bacterial infections | 2 | 15 | 1369 | 2553 |
| 614 | Radio | 4 | 15 | 866 | 1380 |
| 614 | cell interaction | 1 | 15 | 2226 | 2837 |
| 619 | Underwater Archaeology | 3 | 14 | 134 | 213 |
| 619 | Computer Vision | 1 | 14 | 2153 | 2578 |
| 619 | Quantum Gravity | 1 | 14 | 2819 | 2858 |
| 619 | Cognitive neuroscience | 1 | 14 | 1673 | 2060 |
| 619 | Earthquake prediction | 1 | 14 | 127 | 103 |
| 619 | Societies | 2 | 14 | 242 | 315 |
| 619 | DNA | 2 | 14 | 954 | 1632 |
| 619 | Europe | 5 | 14 | 3205 | 6066 |
| 627 | Psychiatry | 2 | 13 | 6103 | 8226 |
| 627 | Waste management | 1 | 13 | 2798 | 3138 |
| 627 | Water Purification | 1 | 13 | 2263 | 2605 |
| 627 | Urbanization | 1 | 13 | 627 | 594 |
| 627 | Nanostructures | 1 | 13 | 3966 | 4553 |
| 627 | Air pollution | 1 | 13 | 45 | 88 |
| 627 | Urban climatology | 1 | 13 | 45 | 88 |
| 627 | management | 2 | 13 | 4661 | 6119 |
| 627 | libraries | 3 | 13 | 866 | 1041 |
| 627 | Cell communication | 1 | 13 | 1653 | 2285 |
| 637 | Internet of Things | 1 | 12 | 1493 | 1637 |
| 637 | Educational Psychology | 1 | 12 | 2503 | 2827 |
| 637 | Environmental Archaeology | 1 | 12 | 201 | 242 |
| 637 | Measurement | 1 | 12 | 2522 | 2982 |
| 637 | Environmental risk assessment | 1 | 12 | 984 | 1266 |
| 637 | environmental control | 1 | 12 | 546 | 792 |
| 637 | internet | 1 | 12 | 2565 | 2722 |
| 644 | Nondestructive testing | 1 | 11 | 1392 | 1607 |
| 644 | Drug design | 1 | 11 | 3410 | 4020 |
| 644 | Learning | 2 | 11 | 1894 | 3002 |
| 647 | Human genetics | 1 | 10 | 3936 | 5268 |
| 647 | Stochastic Processes | 1 | 10 | 1783 | 1961 |
| 647 | Geographic information systems | 1 | 10 | 2269 | 2617 |
| 647 | Bioremediation | 1 | 10 | 1824 | 2501 |
| 647 | Organometallic chemistry | 3 | 10 | 2375 | 3745 |
| 647 | Community Archaeology | 1 | 10 | 44 | 44 |
| 647 | Quantum Optics | 2 | 10 | 1304 | 1841 |
| 647 | environmental remediation | 1 | 10 | 852 | 1226 |
| 647 | Organometallic compounds | 3 | 10 | 1467 | 2559 |
| 647 | Paleobotany | 2 | 10 | 243 | 555 |
| 647 | Vegetation dynamics | 2 | 10 | 228 | 530 |
| 647 | Atomic spectroscopy | 2 | 10 | 1648 | 2385 |
| 647 | Laser Spectroscopy | 2 | 10 | 1238 | 1758 |
| 660 | Geriatrics | 2 | 9 | 4536 | 6214 |
| 660 | sedimentary basins | 1 | 9 | 412 | 626 |
| 660 | Wireless Communication | 1 | 9 | 983 | 1186 |
| 660 | Adaptive control systems | 1 | 9 | 1206 | 1442 |
| 660 | Pacific Islands | 2 | 9 | 500 | 992 |
| 660 | Microbiota | 1 | 9 | 167 | 373 |
| 666 | Ceramics | 1 | 8 | 2649 | 3105 |
| 666 | Plant Taxonomy | 2 | 8 | 618 | 1006 |
| 666 | Glass | 1 | 8 | 2033 | 2604 |
| 666 | pottery | 1 | 8 | 1949 | 2537 |
| 666 | health planning | 1 | 8 | 4200 | 5222 |
| 666 | Information Science | 1 | 8 | 4672 | 5557 |
| 672 | Global Health | 1 | 7 | 2549 | 3310 |
| 672 | Occupational Health | 1 | 7 | 2365 | 2819 |
| 672 | Restoration Ecology | 2 | 7 | 653 | 1348 |
| 672 | Natural resources | 1 | 7 | 1527 | 2069 |
| 672 | industrial hygiene | 1 | 7 | 2487 | 2755 |
| 672 | Sleep Disorders | 1 | 7 | 3098 | 3642 |
| 672 | Hydrodynamics | 1 | 7 | 1061 | 1564 |
| 672 | Marine mineral resources | 1 | 7 | 341 | 498 |
| 672 | Seabed | 1 | 7 | 341 | 498 |
| 672 | synthesis | 1 | 7 | 1947 | 2326 |
| 672 | Sleep | 2 | 7 | 2452 | 3653 |
| 672 | silicon | 1 | 7 | 895 | 1169 |
| 684 | Pharmacy | 1 | 6 | 4016 | 5231 |
| 684 | Chronobiology | 1 | 6 | 1043 | 1474 |
| 684 | Mechatronics | 1 | 6 | 1540 | 2044 |
| 684 | Pharmaceutical Technology | 1 | 6 | 2751 | 3715 |
| 684 | Pharmacokinetics | 1 | 6 | 2001 | 2763 |
| 684 | Circadian rhythms | 1 | 6 | 766 | 1250 |
| 684 | biological clocks | 1 | 6 | 1043 | 1474 |
| 684 | Photogrammetry | 2 | 6 | 1313 | 1633 |
| 684 | preventive medicine | 1 | 6 | 2728 | 3849 |
| 684 | zoos | 2 | 6 | 126 | 298 |
| 684 | circadian rhythm | 1 | 6 | 1043 | 1474 |
| 684 | biological rhythms | 1 | 6 | 988 | 1431 |
| 684 | heredity | 1 | 6 | 1450 | 2015 |
| 697 | Risk Management | 1 | 5 | 1651 | 2463 |
| 697 | Rock deformation | 1 | 5 | 465 | 765 |
| 697 | Technological Innovations | 1 | 5 | 2153 | 3040 |
| 697 | water resources | 2 | 5 | 498 | 975 |
| 697 | Flood forecasting | 1 | 5 | 307 | 632 |
| 697 | Flood control | 1 | 5 | 691 | 1070 |
| 697 | particles | 1 | 5 | 2010 | 2819 |
| 697 | Telecommunication | 1 | 5 | 4187 | 4702 |
| 697 | aquatic insects | 1 | 5 | 221 | 297 |
| 697 | Granular materials | 1 | 5 | 1245 | 1952 |
| 697 | Fish | 1 | 5 | 795 | 1105 |
| 708 | Marine Engineering | 2 | 4 | 421 | 766 |
| 708 | Aerospace Engineering | 1 | 4 | 931 | 1238 |
| 708 | Comparative Psychology | 1 | 4 | 289 | 521 |
| 708 | Forest Ecology | 1 | 4 | 1884 | 2753 |
| 708 | Crystallization | 1 | 4 | 1066 | 1420 |
| 708 | Ultrasonics | 2 | 4 | 1581 | 3073 |
| 708 | Ferroelectricity | 2 | 4 | 1294 | 1907 |
| 708 | Entropy | 1 | 4 | 2325 | 3062 |
| 708 | Animal welfare | 1 | 4 | 683 | 1190 |
| 708 | Probiotics | 1 | 4 | 497 | 1019 |
| 708 | Wind power | 1 | 4 | 704 | 1079 |
| 708 | environmental exposure | 1 | 4 | 3720 | 5439 |
| 708 | radioactive waste | 1 | 4 | 1608 | 2666 |
| 708 | industrial waste | 1 | 4 | 1660 | 2693 |
| 708 | Hazardous waste | 1 | 4 | 1857 | 2954 |
| 708 | Ultrasound | 2 | 4 | 834 | 1773 |
| 708 | Radio frequency | 2 | 4 | 534 | 1072 |
| 725 | Civil Engineering | 4 | 3 | 2058 | 4162 |
| 725 | Urban Geography | 1 | 3 | 460 | 766 |
| 725 | Mental Disorders | 1 | 3 | 5626 | 7509 |
| 725 | Helminthology | 1 | 3 | 368 | 601 |
| 725 | Library Science | 1 | 3 | 2564 | 2866 |
| 725 | Helminths | 1 | 3 | 368 | 601 |
| 725 | Culture | 1 | 3 | 2093 | 2668 |
| 725 | astronomical phenomena | 2 | 3 | 842 | 1720 |
| 725 | gastrointestinal tract | 1 | 3 | 703 | 1320 |
| 734 | Economic History | 2 | 2 | 5079 | 7303 |
| 734 | Human Geography | 2 | 2 | 1524 | 2910 |
| 734 | Photonics | 21 | 2 | 741 | 4056 |
| 734 | Electromagnetism | 1 | 2 | 1565 | 2135 |
| 734 | Periglacial processes | 1 | 2 | 282 | 540 |
| 734 | Research Design | 1 | 2 | 2568 | 4168 |
| 734 | Open source software | 1 | 2 | 216 | 290 |
| 734 | Bifurcation Theory | 1 | 2 | 1315 | 1827 |
| 734 | economic policy | 2 | 2 | 3511 | 5428 |
| 734 | Electromagnetic waves | 1 | 2 | 540 | 940 |
| 734 | ethnobiology | 1 | 2 | 564 | 1034 |
| 734 | Permafrost | 1 | 2 | 282 | 540 |
| 734 | Liposomes | 1 | 2 | 1110 | 1817 |
| 734 | Frozen ground | 1 | 2 | 287 | 543 |
| 734 | Radio waves | 1 | 2 | 722 | 1036 |
| 734 | Lipid bilayers | 1 | 2 | 896 | 1399 |
| 734 | Microwaves | 1 | 2 | 1960 | 2481 |
| 734 | polymerization | 2 | 2 | 4856 | 7294 |
| 752 | Mining Engineering | 1 | 1 | 1131 | 1625 |
| 752 | History | 2 | 1 | 1688 | 1848 |
| 752 | Physical Geography | 2 | 1 | 864 | 1869 |
| 752 | Environmental Education | 1 | 1 | 796 | 1414 |
| 752 | Psychometrics | 1 | 1 | 784 | 1268 |
| 752 | Functional Genomics | 1 | 1 | 626 | 1210 |
| 752 | Diabetes mellitus | 1 | 1 | 3948 | 5775 |
| 752 | Laser-plasma interactions | 1 | 1 | 179 | 293 |
| 752 | Herpetology | 3 | 1 | 413 | 1143 |
| 752 | Plasma density | 1 | 1 | 179 | 293 |
| 752 | Mountains | 2 | 1 | 625 | 1555 |
| 752 | Amphibians | 3 | 1 | 330 | 1029 |
| 752 | Diabetes | 1 | 1 | 4068 | 5848 |
| 765 | Education | 4 | 0 | 4180 | 9677 |
| 765 | Statistics | 2 | 0 | 3684 | 6251 |
| 765 | Systems Analysis | 1 | 0 | 2205 | 3636 |
| 765 | infrared radiation | 1 | 0 | 1296 | 2098 |
| 765 | Politics | 1 | 0 | 1272 | 1686 |
| 765 | Biometrics | 1 | 0 | 2019 | 3123 |
| 765 | nuclear power | 1 | 0 | 998 | 1514 |
| 765 | Quality of life | 1 | 0 | 3032 | 4977 |
| 765 | Tropical Medicine | 1 | 0 | 3693 | 5638 |
| 765 | government | 1 | 0 | 1327 | 1849 |
| 765 | Imaging systems | 1 | 0 | 1857 | 2962 |
| 765 | rehabilitation | 1 | 0 | 4154 | 6321 |