| 1 | Chemistry | 657 | 15.3K | 605 | 948 |
| 2 | Chemical Engineering | 443 | 14.7K | 204 | 277 |
| 3 | Analytical Chemistry | 325 | 11.3K | 210 | 236 |
| 4 | Nuclear Physics | 412 | 11.1K | 444 | 493 |
| 5 | Biochemistry | 246 | 7.5K | 1,056 | 1,102 |
| 6 | Pollution | 140 | 7.3K | 628 | 636 |
| 7 | Quantum Gravity | 170 | 7.1K | 367 | 341 |
| 8 | Materials | 215 | 7.0K | 708 | 785 |
| 9 | Environmental monitoring | 115 | 6.7K | 330 | 254 |
| 10 | Soil Science | 147 | 6.2K | 86 | 83 |
| 11 | Biotechnology | 158 | 6.1K | 623 | 743 |
| 12 | Colloids | 123 | 6.1K | 503 | 406 |
| 13 | Earth Sciences | 169 | 5.7K | 207 | 267 |
| 14 | environmental pollution | 78 | 5.6K | 723 | 476 |
| 15 | Molecular Biology | 233 | 5.4K | 857 | 1,184 |
| 16 | Catalysis | 115 | 5.4K | 638 | 596 |
| 17 | Environmental Geology | 104 | 5.3K | 38 | 28 |
| 18 | Organic Chemistry | 147 | 5.3K | 281 | 262 |
| 19 | Ecology | 118 | 5.2K | 914 | 970 |
| 20 | Medicine | 238 | 5.2K | 986 | 1,329 |
| 21 | Physics | 355 | 5.1K | 899 | 1,674 |
| 22 | Renewable Energy Sources | 101 | 4.9K | 198 | 336 |
| 23 | Surface Chemistry | 124 | 4.7K | 505 | 462 |
| 24 | Environmental Health | 135 | 4.7K | 588 | 692 |
| 25 | energy conservation | 75 | 4.6K | 197 | 204 |
| 26 | environmental protection | 134 | 4.4K | 203 | 296 |
| 27 | Electrochemistry | 141 | 4.3K | 566 | 446 |
| 28 | Petroleum Engineering | 142 | 4.2K | 41 | 42 |
| 29 | Energy Policy | 69 | 4.2K | 328 | 281 |
| 30 | Science | 222 | 4.1K | 975 | 1,800 |
| 31 | Geomorphology | 41 | 3.9K | 238 | 93 |
| 32 | Research | 186 | 3.9K | 972 | 1,208 |
| 33 | Hydrology | 74 | 3.8K | 310 | 243 |
| 34 | Biomedical Engineering | 110 | 3.8K | 672 | 644 |
| 35 | Biochemical Engineering | 78 | 3.6K | 524 | 668 |
| 36 | Mathematics | 248 | 3.5K | 710 | 655 |
| 37 | actuators | 68 | 3.4K | 260 | 192 |
| 37 | transducers | 68 | 3.4K | 260 | 192 |
| 39 | Biology | 108 | 3.3K | 1,396 | 1,886 |
| 40 | Electrical Engineering | 174 | 3.2K | 226 | 190 |
| 41 | synthesis | 104 | 3.1K | 14 | 3 |
| 42 | Toxicology | 89 | 3.1K | 721 | 708 |
| 43 | natural gas | 113 | 3.0K | 10 | 16 |
| 44 | food technology | 101 | 3.0K | 236 | 282 |
| 45 | Bioengineering | 72 | 3.0K | 731 | 809 |
| 46 | Polymers | 157 | 3.0K | 599 | 773 |
| 47 | Environmental Management | 57 | 3.0K | 446 | 397 |
| 48 | Nutrition | 87 | 3.0K | 611 | 644 |
| 49 | coal | 62 | 2.9K | 179 | 161 |
| 50 | Food | 94 | 2.8K | 312 | 397 |
| 51 | Agricultural Ecology | 108 | 2.7K | 38 | 128 |
| 52 | Agriculture | 138 | 2.6K | 110 | 220 |
| 53 | Food additives | 36 | 2.6K | 151 | 108 |
| 54 | polymerization | 124 | 2.6K | 564 | 690 |
| 55 | Composite Materials | 61 | 2.5K | 503 | 533 |
| 56 | China | 66 | 2.5K | 397 | 213 |
| 57 | Geology | 100 | 2.5K | 506 | 555 |
| 58 | Heat Exchangers | 47 | 2.5K | 143 | 102 |
| 59 | Artificial Intelligence | 90 | 2.5K | 494 | 600 |
| 60 | Optics | 152 | 2.4K | 567 | 652 |
| 61 | Water quality management | 62 | 2.4K | 158 | 98 |
| 62 | Materials Science | 101 | 2.4K | 746 | 987 |
| 63 | Environment | 64 | 2.3K | 957 | 1,330 |
| 64 | Signal Processing | 79 | 2.3K | 389 | 460 |
| 65 | hydrocolloids | 32 | 2.3K | 108 | 105 |
| 66 | Microbiology | 80 | 2.3K | 1,179 | 1,409 |
| 67 | Nanotechnology | 110 | 2.3K | 821 | 1,191 |
| 68 | System analysis | 99 | 2.2K | 173 | 236 |
| 69 | Fluid Mechanics | 70 | 2.2K | 166 | 169 |
| 70 | Ocean Engineering | 69 | 2.2K | 249 | 249 |
| 71 | Climatology | 51 | 2.2K | 317 | 309 |
| 72 | Horticulture | 124 | 2.2K | 13 | 20 |
| 73 | Electrochemical Analysis | 71 | 2.1K | 140 | 136 |
| 74 | Engineering | 91 | 2.1K | 523 | 497 |
| 75 | Meteorology | 49 | 2.1K | 449 | 486 |
| 76 | Biocompatible Materials | 46 | 2.0K | 984 | 1,043 |
| 77 | Engineering Geology | 46 | 1.9K | 219 | 194 |
| 78 | Spectrum analysis | 69 | 1.9K | 938 | 1,010 |
| 79 | Pharmaceutical Chemistry | 56 | 1.9K | 780 | 748 |
| 80 | natural disasters | 38 | 1.9K | 124 | 84 |
| 81 | Pharmacology | 67 | 1.9K | 1,083 | 1,125 |
| 82 | Environmental Engineering | 88 | 1.9K | 444 | 800 |
| 83 | supercritical fluids | 50 | 1.9K | 21 | 24 |
| 84 | Plant diseases | 123 | 1.8K | 151 | 281 |
| 85 | Geographic information systems | 30 | 1.8K | 154 | 29 |
| 86 | Water pollution | 45 | 1.8K | 605 | 625 |
| 87 | Automation | 56 | 1.8K | 391 | 506 |
| 88 | Structural Engineering | 50 | 1.8K | 312 | 259 |
| 89 | Power Electronics | 18 | 1.7K | 400 | 238 |
| 90 | hazard mitigation | 32 | 1.7K | 73 | 46 |
| 91 | Water | 40 | 1.7K | 559 | 676 |
| 92 | Botany | 72 | 1.7K | 800 | 1,018 |
| 93 | Electronics | 98 | 1.6K | 492 | 638 |
| 93 | Earthquake Engineering | 49 | 1.6K | 276 | 266 |
| 95 | Biosensors | 12 | 1.6K | 591 | 282 |
| 96 | Remote Sensing | 39 | 1.6K | 218 | 90 |
| 97 | Radiation | 52 | 1.6K | 322 | 236 |
| 98 | Nuclear Engineering | 124 | 1.6K | 118 | 142 |
| 99 | Environmental Toxicology | 28 | 1.6K | 618 | 497 |
| 100 | Environmental Policy | 46 | 1.5K | 661 | 824 |
| 101 | mass transfer | 52 | 1.5K | 272 | 323 |
| 102 | Statistics | 141 | 1.5K | 241 | 457 |
| 103 | Nuclear Energy | 122 | 1.5K | 59 | 78 |
| 104 | Sustainable agriculture | 27 | 1.5K | 92 | 57 |
| 105 | Environmental pollutants | 29 | 1.5K | 534 | 395 |
| 106 | Biophysics | 94 | 1.5K | 1,024 | 1,439 |
| 107 | Bioelectronics | 10 | 1.5K | 551 | 256 |
| 108 | Industrial Engineering | 58 | 1.5K | 251 | 319 |
| 109 | Geophysics | 79 | 1.5K | 677 | 905 |
| 110 | bioclimatology | 37 | 1.5K | 59 | 55 |
| 111 | Pharmaceutical Technology | 17 | 1.4K | 561 | 232 |
| 112 | pollutants | 26 | 1.4K | 449 | 349 |
| 113 | Organometallic compounds | 68 | 1.4K | 107 | 216 |
| 113 | environmental exposure | 26 | 1.4K | 457 | 298 |
| 115 | Neural circuitry | 31 | 1.4K | 459 | 364 |
| 116 | Agricultural Chemistry | 90 | 1.4K | 227 | 471 |
| 117 | Organometallic chemistry | 67 | 1.4K | 193 | 180 |
| 118 | catalytic activity | 15 | 1.4K | 216 | 86 |
| 119 | Parasitology | 84 | 1.3K | 214 | 383 |
| 120 | Cytology | 44 | 1.3K | 1,036 | 1,268 |
| 121 | Marine Biology | 37 | 1.3K | 700 | 633 |
| 122 | Bioorganic chemistry | 24 | 1.3K | 1,002 | 682 |
| 123 | Molecular Spectroscopy | 40 | 1.3K | 302 | 208 |
| 124 | Nanostructures | 64 | 1.3K | 166 | 470 |
| 125 | Agricultural Engineering | 40 | 1.3K | 31 | 39 |
| 126 | Detectors | 49 | 1.3K | 179 | 172 |
| 127 | Orthopedics | 9 | 1.3K | 778 | 292 |
| 127 | Orthopedic Surgery | 8 | 1.3K | 413 | 87 |
| 129 | Psychology | 101 | 1.2K | 731 | 1,082 |
| 130 | Plant physiology | 47 | 1.2K | 437 | 674 |
| 131 | Civil Engineering | 135 | 1.2K | 61 | 104 |
| 132 | Solar Energy | 31 | 1.2K | 324 | 355 |
| 133 | Environmental Chemistry | 17 | 1.2K | 720 | 625 |
| 134 | Astrophysics | 75 | 1.2K | 799 | 1,088 |
| 135 | Green Chemistry | 17 | 1.2K | 701 | 586 |
| 136 | carbon monoxide | 13 | 1.2K | 52 | 13 |
| 137 | Energy Conversion | 9 | 1.2K | 692 | 511 |
| 138 | Numerical Analysis | 47 | 1.1K | 454 | 356 |
| 139 | Combustion | 27 | 1.1K | 326 | 261 |
| 139 | Middle East | 69 | 1.1K | 35 | 47 |
| 141 | Analytical Biochemistry | 31 | 1.1K | 327 | 296 |
| 142 | Physiology | 53 | 1.1K | 923 | 1,198 |
| 143 | Food Preservation | 48 | 1.0K | 42 | 39 |
| 143 | Surface-Active Agents | 20 | 1.0K | 227 | 181 |
| 143 | Surface properties | 20 | 1.0K | 254 | 198 |
| 146 | Marine Pollution | 23 | 1.0K | 326 | 300 |
| 147 | Mechanical Engineering | 128 | 1.0K | 162 | 411 |
| 147 | Nanostructured Materials | 41 | 1.0K | 904 | 1,076 |
| 149 | Measurement | 47 | 1.0K | 149 | 176 |
| 150 | Semiconductors | 37 | 996 | 457 | 308 |
| 151 | Cell Biology | 31 | 990 | 1,154 | 1,417 |
| 152 | Engineering Mathematics | 53 | 985 | 238 | 285 |
| 153 | Sustainable Development | 38 | 973 | 261 | 506 |
| 154 | Soil Mechanics | 35 | 958 | 258 | 304 |
| 155 | Technology | 86 | 942 | 543 | 986 |
| 156 | Molecular structure | 76 | 937 | 245 | 612 |
| 157 | Metabolism | 12 | 907 | 1,105 | 875 |
| 158 | Diet | 18 | 906 | 699 | 725 |
| 159 | computer networks | 24 | 896 | 807 | 674 |
| 160 | Virology | 38 | 873 | 697 | 1,125 |
| 161 | Information Systems | 24 | 858 | 291 | 242 |
| 162 | Clinical Chemistry | 29 | 856 | 759 | 832 |
| 163 | Agronomy | 14 | 854 | 132 | 140 |
| 163 | Computer-Aided Design | 20 | 854 | 338 | 230 |
| 165 | Neurology | 29 | 814 | 1,476 | 1,639 |
| 166 | lasers | 56 | 813 | 347 | 474 |
| 167 | Geochemistry | 42 | 807 | 522 | 712 |
| 168 | Histology | 14 | 800 | 804 | 582 |
| 169 | city planning | 31 | 794 | 359 | 397 |
| 170 | Breeding | 41 | 793 | 208 | 310 |
| 171 | Land use | 13 | 787 | 431 | 247 |
| 172 | Radio | 26 | 759 | 455 | 512 |
| 173 | Pharmacy | 27 | 752 | 593 | 602 |
| 173 | Information Science | 36 | 752 | 537 | 794 |
| 175 | Fracture mechanics | 29 | 751 | 391 | 391 |
| 176 | Quality Control | 26 | 742 | 349 | 388 |
| 177 | Control Theory | 58 | 740 | 283 | 462 |
| 178 | Solid State Chemistry | 25 | 738 | 966 | 740 |
| 179 | Radio waves | 20 | 735 | 304 | 294 |
| 180 | Metallography | 12 | 729 | 331 | 148 |
| 181 | Animal breeding | 42 | 724 | 129 | 174 |
| 182 | Membranes | 12 | 720 | 860 | 711 |
| 183 | Building Materials | 11 | 715 | 942 | 796 |
| 184 | Geography | 20 | 712 | 737 | 641 |
| 185 | Landslides | 1 | 705 | 471 | 58 |
| 186 | particles | 31 | 700 | 120 | 139 |
| 187 | Metals | 41 | 696 | 443 | 673 |
| 188 | Telecommunication Systems | 52 | 689 | 147 | 298 |
| 189 | Rock Mechanics | 22 | 688 | 275 | 314 |
| 190 | Animal health | 50 | 685 | 34 | 37 |
| 191 | Rheology | 24 | 683 | 119 | 127 |
| 192 | Public Health | 19 | 681 | 1,983 | 1,699 |
| 193 | Minerals | 21 | 674 | 123 | 110 |
| 194 | Statistical physics | 74 | 667 | 767 | 1,207 |
| 195 | complementary therapies | 29 | 664 | 266 | 320 |
| 196 | Emulsions | 32 | 658 | 20 | 15 |
| 197 | Systems Engineering | 39 | 657 | 414 | 625 |
| 198 | Genetics | 27 | 653 | 1,063 | 1,419 |
| 199 | Africa | 29 | 647 | 303 | 213 |
| 200 | nuclear power | 45 | 645 | 60 | 55 |
| 201 | nanoscience | 20 | 642 | 1,149 | 1,276 |
| 202 | food handling | 20 | 639 | 182 | 234 |
| 203 | Physical Chemistry | 46 | 635 | 505 | 849 |
| 203 | Drying | 15 | 635 | 91 | 63 |
| 205 | Genomics | 26 | 630 | 913 | 1,099 |
| 206 | Photochemistry | 23 | 625 | 466 | 521 |
| 206 | Quantum Optics | 26 | 625 | 189 | 189 |
| 206 | Atomic spectroscopy | 26 | 625 | 294 | 291 |
| 206 | Laser Spectroscopy | 26 | 625 | 152 | 163 |
| 210 | Metallurgy | 40 | 622 | 526 | 703 |
| 211 | Photobiology | 22 | 620 | 275 | 339 |
| 212 | Plants | 28 | 617 | 568 | 840 |
| 213 | Psychiatry | 74 | 614 | 725 | 1,476 |
| 214 | Chemical processes | 32 | 608 | 55 | 87 |
| 214 | Reproduction | 37 | 608 | 553 | 747 |
| 216 | Food texture | 18 | 606 | 19 | 18 |
| 217 | Ultrasonics | 17 | 605 | 385 | 420 |
| 218 | United States | 27 | 600 | 1,591 | 1,604 |
| 219 | environmental indicators | 9 | 599 | 603 | 402 |
| 220 | Stochastic Processes | 26 | 594 | 148 | 116 |
| 221 | Microbial Biotechnology | 10 | 588 | 369 | 203 |
| 222 | Evolutionary Genetics | 10 | 587 | 196 | 96 |
| 222 | Molecular Epidemiology | 10 | 587 | 196 | 96 |
| 224 | Asia | 28 | 586 | 670 | 567 |
| 225 | Alternative Medicine | 21 | 579 | 346 | 361 |
| 226 | Quantum electronics | 33 | 574 | 386 | 434 |
| 227 | Parenteral nutrition | 5 | 567 | 647 | 378 |
| 228 | Enteral nutrition | 4 | 559 | 631 | 315 |
| 229 | Sonochemistry | 13 | 556 | 175 | 242 |
| 230 | Genetic engineering | 26 | 553 | 581 | 832 |
| 231 | Calorimetry | 17 | 552 | 344 | 200 |
| 231 | software | 8 | 552 | 570 | 340 |
| 231 | Thermal analysis | 17 | 552 | 344 | 200 |
| 234 | Porous materials | 36 | 545 | 56 | 94 |
| 235 | Granular materials | 17 | 537 | 109 | 102 |
| 235 | proteins | 32 | 537 | 511 | 714 |
| 237 | Education | 20 | 532 | 1,397 | 1,092 |
| 238 | Chemical industry | 20 | 524 | 377 | 262 |
| 239 | plant molecular biology | 20 | 523 | 528 | 812 |
| 240 | Environmental Geochemistry | 15 | 521 | 72 | 51 |
| 241 | Biomass Energy | 13 | 518 | 1,153 | 1,240 |
| 242 | Medicinal plants | 13 | 515 | 544 | 582 |
| 242 | geological modeling | 18 | 515 | 90 | 123 |
| 244 | Physical organic chemistry | 12 | 513 | 724 | 459 |
| 244 | Ore deposits | 19 | 513 | 149 | 180 |
| 246 | animal diseases | 23 | 512 | 105 | 101 |
| 247 | Oncology | 15 | 506 | 800 | 1,169 |
| 247 | Pharmacognosy | 12 | 506 | 885 | 825 |
| 249 | Systems Analysis | 37 | 501 | 122 | 246 |
| 249 | biological factors | 20 | 501 | 609 | 686 |
| 251 | Industrial Microbiology | 9 | 497 | 1,057 | 882 |
| 252 | Zoology | 53 | 494 | 505 | 824 |
| 253 | Hydraulic Engineering | 22 | 485 | 263 | 311 |
| 254 | Public Policy | 31 | 480 | 388 | 633 |
| 255 | Safety management | 25 | 477 | 43 | 51 |
| 256 | Sustainable Engineering | 10 | 476 | 868 | 763 |
| 257 | Chemical analysis | 11 | 471 | 509 | 391 |
| 258 | Fluid Dynamics | 19 | 465 | 369 | 390 |
| 259 | Transportation | 19 | 463 | 573 | 677 |
| 260 | Aerosols | 19 | 459 | 139 | 176 |
| 261 | Condensed Matter | 45 | 451 | 971 | 1,400 |
| 262 | Mycology | 13 | 445 | 711 | 687 |
| 262 | India | 85 | 445 | 41 | 118 |
| 264 | rehabilitation | 13 | 444 | 927 | 844 |
| 265 | Optical materials | 12 | 438 | 1,381 | 1,385 |
| 266 | atmosphere | 4 | 427 | 640 | 269 |
| 266 | Microstructure | 20 | 427 | 163 | 118 |
| 268 | Plant Ecology | 16 | 423 | 726 | 927 |
| 268 | soil conservation | 12 | 423 | 253 | 250 |
| 270 | vibration | 39 | 422 | 174 | 450 |
| 270 | food contamination | 13 | 422 | 310 | 212 |
| 272 | soil management | 13 | 421 | 183 | 255 |
| 272 | Evolutionary Computation | 6 | 421 | 255 | 269 |
| 272 | Swarm Intelligence | 6 | 421 | 128 | 98 |
| 275 | Parasitic Diseases | 33 | 418 | 418 | 798 |
| 276 | Thermodynamics | 16 | 413 | 417 | 256 |
| 277 | irrigation | 22 | 412 | 48 | 63 |
| 278 | Mathematical Physics | 37 | 410 | 876 | 1,086 |
| 279 | Energy Consumption | 4 | 409 | 285 | 198 |
| 279 | aerosol | 16 | 409 | 106 | 125 |
| 281 | Solid State Physics | 36 | 406 | 1,306 | 1,653 |
| 282 | Epidemiology | 8 | 404 | 2,011 | 1,469 |
| 282 | electric vehicles | 6 | 404 | 187 | 110 |
| 282 | dietary supplements | 11 | 404 | 305 | 280 |
| 285 | Drug design | 23 | 403 | 356 | 644 |
| 286 | Human-Computer Interaction | 6 | 402 | 1,057 | 611 |
| 286 | Brain | 11 | 402 | 1,284 | 1,223 |
| 288 | Wireless Communication Systems | 28 | 401 | 749 | 1,004 |
| 289 | Manufacturing Processes | 18 | 399 | 909 | 1,016 |
| 289 | Natural resources | 15 | 399 | 259 | 358 |
| 289 | Hydrodynamics | 15 | 399 | 213 | 258 |
| 292 | Economics | 19 | 398 | 1,763 | 1,614 |
| 292 | Fisheries | 24 | 398 | 455 | 669 |
| 294 | extraterrestrial environment | 13 | 396 | 179 | 126 |
| 294 | astronomical phenomena | 13 | 396 | 160 | 117 |
| 296 | Hydrogeology | 17 | 395 | 162 | 206 |
| 297 | Thermochemistry | 13 | 394 | 197 | 146 |
| 298 | Petroleum Geology | 19 | 385 | 135 | 209 |
| 298 | Aquaculture | 19 | 385 | 509 | 612 |
| 300 | Parasites | 39 | 383 | 243 | 592 |
| 300 | tillage | 10 | 383 | 168 | 225 |
| 302 | Natural history | 14 | 382 | 1,424 | 2,544 |
| 303 | Optoelectronic devices | 23 | 379 | 176 | 153 |
| 304 | land degradation | 8 | 377 | 206 | 140 |
| 304 | degradation | 8 | 377 | 206 | 140 |
| 306 | aromatic plants | 17 | 370 | 32 | 11 |
| 307 | Crop Science | 20 | 368 | 24 | 24 |
| 308 | Nanoparticles | 18 | 367 | 707 | 946 |
| 308 | Cancer | 20 | 367 | 1,070 | 1,507 |
| 310 | Process Control | 12 | 356 | 378 | 633 |
| 311 | Biomass | 3 | 353 | 698 | 324 |
| 312 | Australia | 25 | 352 | 432 | 609 |
| 313 | Fuzzy systems | 32 | 351 | 246 | 440 |
| 314 | fuel cells | 11 | 346 | 632 | 796 |
| 315 | plant oils | 25 | 341 | 44 | 53 |
| 316 | Marine Geology | 18 | 340 | 154 | 235 |
| 317 | food industry | 7 | 339 | 378 | 153 |
| 318 | Human biology | 4 | 338 | 540 | 189 |
| 319 | Nursing | 5 | 337 | 1,534 | 634 |
| 320 | Chromosome mapping | 12 | 336 | 760 | 925 |
| 320 | gene mapping | 12 | 336 | 836 | 1,048 |
| 322 | water supply | 10 | 334 | 422 | 499 |
| 323 | Production Engineering | 13 | 333 | 901 | 777 |
| 323 | Fungi | 8 | 333 | 589 | 597 |
| 325 | Tropical Medicine | 12 | 331 | 792 | 650 |
| 326 | Plant Biotechnology | 22 | 329 | 147 | 330 |
| 326 | Recombinant DNA | 21 | 329 | 419 | 685 |
| 328 | Drug delivery systems | 14 | 327 | 625 | 900 |
| 329 | sustainability | 3 | 321 | 876 | 540 |
| 330 | Computer Science | 18 | 319 | 701 | 698 |
| 331 | Cybernetics | 12 | 318 | 761 | 847 |
| 331 | energy resources | 7 | 318 | 845 | 1,040 |
| 333 | Islamic Architecture | 13 | 316 | 6 | 17 |
| 333 | Molecular cloning | 19 | 316 | 411 | 658 |
| 335 | Robotics | 16 | 315 | 697 | 834 |
| 336 | Information Technology | 12 | 313 | 1,154 | 1,196 |
| 336 | miniaturization | 15 | 313 | 760 | 1,128 |
| 338 | Catalysts | 13 | 312 | 215 | 250 |
| 339 | peptides | 18 | 311 | 158 | 203 |
| 340 | Molecular evolution | 19 | 304 | 482 | 870 |
| 341 | Image Processing | 20 | 303 | 845 | 1,209 |
| 342 | Computational Biology | 19 | 301 | 870 | 1,272 |
| 343 | Immunology | 15 | 298 | 1,263 | 1,637 |
| 344 | Entrepreneurship | 15 | 295 | 292 | 697 |
| 345 | Photonics | 16 | 290 | 849 | 1,112 |
| 345 | Bioinformatics | 18 | 290 | 755 | 1,088 |
| 347 | Developing countries | 18 | 289 | 793 | 1,094 |
| 348 | Fiber Optics | 22 | 287 | 269 | 401 |
| 349 | Biomechanics | 7 | 285 | 808 | 673 |
| 349 | Lipids | 13 | 285 | 524 | 784 |
| 351 | machinery | 26 | 284 | 127 | 283 |
| 352 | Sedimentary rocks | 25 | 282 | 80 | 318 |
| 353 | Plastics | 21 | 281 | 537 | 742 |
| 354 | Dynamics | 32 | 278 | 329 | 624 |
| 355 | Immunopharmacology | 11 | 274 | 452 | 514 |
| 356 | Oxidative stress | 6 | 273 | 541 | 700 |
| 356 | Respiration | 7 | 273 | 883 | 812 |
| 358 | Mechanics | 16 | 272 | 477 | 516 |
| 359 | Nanobiotechnology | 2 | 271 | 533 | 318 |
| 360 | Cosmology | 17 | 269 | 203 | 339 |
| 360 | nuclear astrophysics | 17 | 269 | 134 | 277 |
| 360 | mathematical analysis | 20 | 269 | 1,097 | 1,046 |
| 363 | Groundwater | 12 | 267 | 225 | 272 |
| 364 | Cytogenetics | 3 | 261 | 1,140 | 861 |
| 364 | Genetic recombination | 18 | 261 | 427 | 730 |
| 366 | Health | 8 | 260 | 1,194 | 1,032 |
| 367 | Nanochemistry | 11 | 259 | 524 | 534 |
| 367 | Medical Physics | 40 | 259 | 378 | 889 |
| 367 | animals | 14 | 259 | 481 | 493 |
| 370 | Wildlife conservation | 7 | 258 | 697 | 804 |
| 371 | Structural dynamics | 13 | 257 | 426 | 675 |
| 371 | Finite Element Method | 7 | 257 | 157 | 104 |
| 371 | Nervous system | 10 | 257 | 1,222 | 1,379 |
| 374 | Geodynamics | 15 | 256 | 374 | 563 |
| 375 | Tourism | 14 | 254 | 670 | 1,161 |
| 375 | plant viruses | 12 | 254 | 69 | 111 |
| 375 | cytokines | 9 | 254 | 588 | 729 |
| 375 | radar | 9 | 254 | 62 | 47 |
| 375 | Sonar | 9 | 254 | 55 | 40 |
| 375 | Navigation | 9 | 254 | 118 | 61 |
| 381 | Radiation effects | 3 | 253 | 643 | 375 |
| 382 | Solutions | 14 | 251 | 89 | 103 |
| 383 | Sociology | 15 | 250 | 1,267 | 1,493 |
| 384 | Microbial Ecology | 7 | 249 | 1,354 | 1,564 |
| 385 | Dermatology | 10 | 248 | 827 | 805 |
| 385 | Immunotoxicology | 7 | 248 | 118 | 59 |
| 385 | environmental remediation | 12 | 248 | 52 | 110 |
| 388 | Neurobiology | 7 | 247 | 970 | 1,075 |
| 388 | Urban Policy | 4 | 247 | 728 | 468 |
| 390 | Animal Nutrition | 18 | 246 | 172 | 268 |
| 390 | Toxins | 11 | 246 | 310 | 401 |
| 392 | Computer Graphics | 25 | 245 | 494 | 872 |
| 392 | carbonate rocks | 23 | 245 | 13 | 14 |
| 394 | Computer Engineering | 22 | 244 | 135 | 318 |
| 394 | Microwaves | 25 | 244 | 445 | 606 |
| 396 | Hazardous waste | 3 | 243 | 956 | 800 |
| 397 | Energy Storage | 7 | 241 | 804 | 778 |
| 398 | Solitons | 15 | 240 | 378 | 574 |
| 398 | Fractals | 15 | 240 | 382 | 579 |
| 398 | Chaos | 15 | 240 | 378 | 574 |
| 401 | Social Sciences | 15 | 239 | 1,510 | 1,507 |
| 401 | Nonlinear Dynamics | 27 | 239 | 714 | 1,103 |
| 403 | Structural design | 21 | 237 | 186 | 430 |
| 403 | Immunochemistry | 7 | 237 | 565 | 460 |
| 403 | radioactive waste | 2 | 237 | 1,012 | 750 |
| 403 | industrial waste | 2 | 237 | 1,059 | 752 |
| 407 | Sports Medicine | 13 | 235 | 1,184 | 1,223 |
| 407 | drainage | 16 | 235 | 55 | 65 |
| 409 | Food Safety | 7 | 234 | 86 | 65 |
| 410 | Medical Laboratory Science | 9 | 233 | 1,087 | 1,360 |
| 410 | Bioinorganic chemistry | 10 | 233 | 797 | 819 |
| 412 | clay | 6 | 231 | 523 | 576 |
| 413 | Astronomy | 21 | 229 | 1,144 | 1,671 |
| 413 | Flood control | 13 | 229 | 33 | 41 |
| 415 | Telecommunication | 20 | 227 | 1,008 | 1,462 |
| 416 | Pharmacokinetics | 4 | 226 | 671 | 503 |
| 416 | drug evaluation | 4 | 226 | 1,057 | 730 |
| 418 | management | 9 | 225 | 2,039 | 2,172 |
| 418 | Heterocyclic compounds | 15 | 225 | 334 | 296 |
| 420 | Diabetes mellitus | 10 | 223 | 908 | 1,223 |
| 420 | Diabetes | 10 | 223 | 948 | 1,254 |
| 422 | Immunotherapy | 10 | 222 | 850 | 1,150 |
| 423 | Cardiovascular diseases | 8 | 221 | 848 | 796 |
| 423 | energy development | 7 | 221 | 440 | 589 |
| 425 | Microscopy | 17 | 220 | 441 | 615 |
| 426 | Ceramics | 13 | 218 | 639 | 735 |
| 427 | Probiotics | 8 | 214 | 37 | 46 |
| 427 | Oxidation | 4 | 214 | 120 | 69 |
| 429 | Metabolic diseases | 10 | 213 | 1,029 | 1,377 |
| 430 | Obesity | 6 | 208 | 1,195 | 1,255 |
| 430 | Nonlinear mechanics | 10 | 208 | 160 | 196 |
| 432 | Industrial Safety | 10 | 206 | 537 | 646 |
| 432 | Multimedia Systems | 14 | 206 | 774 | 946 |
| 434 | concrete | 2 | 205 | 1,082 | 815 |
| 435 | Greenhouse gases | 7 | 203 | 142 | 225 |
| 435 | Cosmochemistry | 6 | 203 | 607 | 616 |
| 437 | Educational Technology | 11 | 202 | 759 | 1,018 |
| 438 | Global Health | 4 | 200 | 893 | 463 |
| 439 | Obstetrics | 10 | 199 | 1,111 | 1,223 |
| 440 | Nonlinear functional analysis | 5 | 198 | 956 | 609 |
| 440 | Technology Assessment | 2 | 198 | 565 | 331 |
| 442 | Plant breeding | 11 | 197 | 316 | 445 |
| 443 | Geotechnical Engineering | 7 | 196 | 271 | 288 |
| 443 | Iran | 25 | 196 | 15 | 12 |
| 445 | Evolution | 9 | 194 | 1,001 | 1,243 |
| 446 | medical education | 17 | 193 | 626 | 939 |
| 447 | Zeolites | 4 | 191 | 828 | 734 |
| 447 | Petroleum | 17 | 191 | 60 | 81 |
| 449 | Internet of Things | 1 | 190 | 1,599 | 837 |
| 449 | internet | 1 | 190 | 2,348 | 1,064 |
| 451 | Waste management | 11 | 188 | 662 | 752 |
| 452 | viruses | 7 | 187 | 803 | 1,018 |
| 453 | Medical Ethics | 13 | 186 | 476 | 513 |
| 454 | Luminescence | 10 | 185 | 700 | 733 |
| 454 | natural products | 15 | 185 | 752 | 1,055 |
| 456 | Second Language Acquisition | 7 | 182 | 75 | 154 |
| 457 | Clinical Psychology | 8 | 180 | 695 | 854 |
| 458 | probabilities | 25 | 177 | 443 | 620 |
| 459 | Petrology | 8 | 176 | 597 | 691 |
| 459 | Soil dynamics | 6 | 176 | 321 | 329 |
| 461 | Database Management | 3 | 173 | 750 | 522 |
| 461 | Expert Systems | 3 | 173 | 182 | 59 |
| 461 | Glass | 8 | 173 | 604 | 696 |
| 461 | pottery | 8 | 173 | 577 | 679 |
| 465 | Intelligent Transportation Systems | 8 | 172 | 641 | 867 |
| 465 | Algebra | 19 | 172 | 610 | 596 |
| 465 | drugs | 8 | 172 | 1,148 | 1,255 |
| 468 | Risk assessment | 7 | 169 | 309 | 283 |
| 469 | Neurophysiology | 21 | 168 | 1,037 | 1,868 |
| 470 | Functional Analysis | 2 | 167 | 1,569 | 788 |
| 470 | impact | 4 | 167 | 250 | 248 |
| 472 | Japan | 17 | 166 | 572 | 932 |
| 473 | personality | 4 | 165 | 1,252 | 1,182 |
| 473 | Bones | 3 | 165 | 653 | 634 |
| 475 | Phytochemistry | 9 | 164 | 58 | 148 |
| 475 | Phytoremediation | 9 | 164 | 58 | 148 |
| 475 | Bioreactors | 9 | 164 | 58 | 148 |
| 478 | Cellular senescence | 5 | 163 | 151 | 464 |
| 479 | Computational Fluid Dynamics | 8 | 162 | 341 | 404 |
| 479 | amino acids | 8 | 162 | 250 | 417 |
| 481 | Drug targeting | 2 | 161 | 407 | 256 |
| 482 | Child psychology | 6 | 159 | 952 | 1,090 |
| 482 | Nonlinear systems | 9 | 159 | 293 | 349 |
| 484 | Entomology | 22 | 158 | 793 | 1,253 |
| 485 | Cognition | 6 | 157 | 1,177 | 1,173 |
| 486 | Intelligent Control Systems | 20 | 156 | 233 | 410 |
| 486 | wind erosion | 5 | 156 | 44 | 77 |
| 488 | Library Science | 22 | 153 | 169 | 302 |
| 489 | Molecules | 17 | 152 | 646 | 898 |
| 490 | Agricultural Science | 4 | 151 | 151 | 244 |
| 490 | Biological Systems | 6 | 151 | 308 | 384 |
| 490 | Watershed management | 12 | 151 | 20 | 60 |
| 490 | Post-traumatic stress disorder | 4 | 151 | 609 | 592 |
| 494 | Ichthyology | 14 | 150 | 105 | 168 |
| 494 | Fish | 14 | 150 | 75 | 155 |
| 494 | Genes | 8 | 150 | 620 | 755 |
| 497 | Smart Materials | 8 | 149 | 533 | 629 |
| 498 | Surgery | 11 | 148 | 733 | 1,222 |
| 498 | Metallic Glasses | 4 | 148 | 372 | 317 |
| 498 | Ethnology | 4 | 148 | 1,276 | 743 |
| 501 | solar cells | 3 | 147 | 887 | 843 |
| 501 | Animal | 3 | 147 | 157 | 63 |
| 503 | Mineral resources | 5 | 146 | 429 | 558 |
| 504 | Neurochemistry | 9 | 144 | 1,267 | 1,650 |
| 504 | Immunogenetics | 4 | 144 | 492 | 426 |
| 506 | Bioremediation | 6 | 143 | 515 | 711 |
| 506 | free radicals | 2 | 143 | 1,366 | 1,230 |
| 508 | Paleontology | 8 | 142 | 801 | 835 |
| 509 | Regional Planning | 9 | 139 | 840 | 1,058 |
| 509 | Oral Medicine | 12 | 139 | 297 | 380 |
| 511 | ecological risk assessment | 4 | 135 | 161 | 154 |
| 511 | Health Risk Assessment | 4 | 135 | 352 | 245 |
| 513 | Medical Technology | 6 | 134 | 1,013 | 1,148 |
| 513 | Food Microbiology | 5 | 134 | 907 | 1,232 |
| 513 | Animal genetics | 9 | 134 | 293 | 439 |
| 513 | Biodiversity | 11 | 134 | 1,107 | 1,649 |
| 517 | Cognitive Science | 4 | 133 | 1,358 | 1,331 |
| 517 | Ceramic materials | 13 | 133 | 574 | 992 |
| 519 | Developmental Biology | 8 | 132 | 1,067 | 1,570 |
| 519 | Exercise | 13 | 132 | 651 | 996 |
| 521 | Sulfur | 7 | 131 | 34 | 20 |
| 522 | gene therapy | 5 | 130 | 671 | 814 |
| 522 | Scandinavia | 1 | 130 | 984 | 416 |
| 524 | Boundary Value Problems | 5 | 129 | 593 | 491 |
| 524 | Cement | 1 | 129 | 874 | 685 |
| 524 | mathematical concepts | 10 | 129 | 141 | 193 |
| 527 | Ecological Engineering | 4 | 128 | 535 | 674 |
| 527 | starch | 5 | 128 | 224 | 230 |
| 529 | Medical Microbiology | 5 | 127 | 1,440 | 1,782 |
| 530 | Humanities | 11 | 126 | 810 | 930 |
| 530 | Radiation Protection | 18 | 126 | 129 | 218 |
| 530 | radiation monitoring | 18 | 126 | 108 | 207 |
| 530 | Therapeutics | 6 | 126 | 1,018 | 1,239 |
| 530 | Radiation dosimetry | 18 | 126 | 79 | 146 |
| 530 | Behavior | 6 | 126 | 2,024 | 2,633 |
| 536 | Fishery management | 6 | 125 | 553 | 573 |
| 537 | health planning | 15 | 124 | 899 | 1,552 |
| 538 | Pathology | 6 | 123 | 1,199 | 1,431 |
| 538 | Heterocyclic chemistry | 6 | 123 | 301 | 155 |
| 540 | enzymes | 8 | 122 | 859 | 1,234 |
| 540 | Europe | 8 | 122 | 1,744 | 1,878 |
| 542 | Mineralogy | 6 | 121 | 914 | 964 |
| 543 | Teaching | 5 | 120 | 1,370 | 1,213 |
| 543 | Medical innovations | 3 | 120 | 831 | 1,087 |
| 543 | biological evolution | 6 | 120 | 1,349 | 1,833 |
| 546 | Plant tissue culture | 6 | 119 | 450 | 605 |
| 546 | big data | 4 | 119 | 485 | 466 |
| 546 | Agricultural systems | 2 | 119 | 371 | 319 |
| 546 | Plant cell culture | 6 | 119 | 386 | 598 |
| 550 | Optoelectronics | 11 | 118 | 190 | 209 |
| 550 | Electromagnetism | 6 | 118 | 716 | 729 |
| 550 | sanitation | 2 | 118 | 1,598 | 1,655 |
| 550 | finance | 4 | 118 | 2,055 | 1,701 |
| 554 | Regional Economics | 7 | 116 | 253 | 359 |
| 555 | Experimental Design | 4 | 115 | 211 | 235 |
| 555 | air quality management | 6 | 115 | 296 | 464 |
| 557 | Documentation | 1 | 114 | 491 | 212 |
| 557 | Population | 3 | 114 | 846 | 764 |
| 557 | Egypt | 3 | 114 | 527 | 479 |
| 560 | Data Mining | 6 | 113 | 678 | 870 |
| 560 | Neuropsychology | 9 | 113 | 1,221 | 1,726 |
| 560 | Veterinary Pathology | 13 | 113 | 119 | 205 |
| 560 | symbiosis | 2 | 113 | 190 | 67 |
| 560 | polar regions | 1 | 113 | 951 | 478 |
| 560 | Antarctica | 1 | 113 | 873 | 317 |
| 566 | Urban Planning | 2 | 112 | 501 | 388 |
| 566 | community development | 2 | 112 | 750 | 454 |
| 566 | Sports | 12 | 112 | 1,042 | 1,411 |
| 566 | Housing | 2 | 112 | 622 | 467 |
| 570 | Oceanography | 4 | 111 | 1,359 | 1,364 |
| 570 | Histochemistry | 5 | 111 | 761 | 775 |
| 570 | Plasma chemistry | 3 | 111 | 380 | 296 |
| 570 | Inflammation | 4 | 111 | 896 | 1,099 |
| 574 | Social Psychology | 9 | 110 | 1,238 | 1,821 |
| 574 | Atmospheric Physics | 7 | 110 | 986 | 1,333 |
| 574 | Plant genetic engineering | 4 | 110 | 706 | 885 |
| 574 | ecosystem | 4 | 110 | 1,090 | 1,301 |
| 574 | Oxidation-reduction | 1 | 110 | 1,077 | 952 |
| 579 | Tribology | 6 | 109 | 806 | 912 |
| 579 | Chemical kinetics | 20 | 109 | 134 | 355 |
| 581 | Antenna Arrays | 2 | 108 | 636 | 478 |
| 582 | Soil stabilization | 2 | 107 | 19 | 3 |
| 582 | Forest Management | 4 | 107 | 823 | 902 |
| 584 | Forest Ecology | 6 | 105 | 694 | 950 |
| 584 | Quality of life | 5 | 105 | 1,059 | 1,362 |
| 586 | Natural Sciences | 2 | 104 | 144 | 56 |
| 586 | Materials Engineering | 7 | 104 | 385 | 447 |
| 586 | Health Policy | 4 | 104 | 1,685 | 1,591 |
| 586 | Pathogens | 3 | 104 | 79 | 71 |
| 586 | Chemical reactors | 10 | 104 | 35 | 24 |
| 591 | Fertilizers | 3 | 103 | 330 | 326 |
| 592 | Polymer Engineering | 2 | 102 | 156 | 29 |
| 592 | Neurosurgery | 3 | 102 | 818 | 803 |
| 592 | Nutrition physiology | 9 | 102 | 345 | 697 |
| 595 | emergency management | 4 | 101 | 579 | 618 |
| 595 | drug resistance | 3 | 101 | 684 | 679 |
| 595 | Proteome | 6 | 101 | 742 | 1,082 |
| 598 | Ophthalmology | 4 | 98 | 1,284 | 1,300 |
| 598 | protein | 6 | 98 | 802 | 971 |
| 600 | Structural optimization | 4 | 97 | 296 | 335 |
| 600 | Computational Chemistry | 6 | 97 | 453 | 644 |
| 600 | Biopharmaceutics | 5 | 97 | 787 | 1,046 |
| 600 | Anti-inflammatory agents | 3 | 97 | 230 | 201 |
| 600 | Anxiety Disorders | 1 | 97 | 764 | 626 |
| 600 | Anxiety | 1 | 97 | 767 | 623 |
| 600 | Transgenic plants | 3 | 97 | 401 | 467 |
| 600 | Tunneling | 2 | 97 | 409 | 399 |
| 600 | underground construction | 2 | 97 | 409 | 399 |
| 609 | Emotions | 1 | 96 | 912 | 676 |
| 610 | Mechatronics | 4 | 95 | 770 | 846 |
| 610 | Religion and Psychology | 10 | 95 | 170 | 330 |
| 610 | mycoses | 3 | 95 | 711 | 869 |
| 610 | Leisure | 1 | 95 | 586 | 349 |
| 614 | optical devices | 2 | 94 | 630 | 375 |
| 615 | Laser therapy | 4 | 93 | 355 | 275 |
| 616 | Mining Engineering | 2 | 92 | 654 | 456 |
| 616 | Neurotoxicology | 6 | 92 | 340 | 634 |
| 618 | Operations Research | 13 | 91 | 1,128 | 1,822 |
| 618 | Combinatorial chemistry | 2 | 91 | 831 | 845 |
| 618 | Religion and Culture | 3 | 91 | 269 | 178 |
| 618 | Industry | 2 | 91 | 255 | 420 |
| 618 | genome | 4 | 91 | 1,147 | 1,532 |
| 623 | Bacteriology | 5 | 90 | 1,292 | 1,752 |
| 624 | Landscape Ecology | 3 | 89 | 458 | 548 |
| 625 | Electrophoresis | 3 | 88 | 1,533 | 1,415 |
| 625 | Continental shelf | 4 | 88 | 308 | 425 |
| 627 | soil microbiology | 7 | 87 | 912 | 1,742 |
| 627 | soil pollution | 8 | 87 | 213 | 499 |
| 629 | Software Engineering | 6 | 86 | 698 | 867 |
| 629 | Mental Disorders | 10 | 86 | 1,384 | 2,277 |
| 629 | Stem cells | 2 | 86 | 1,318 | 1,251 |
| 632 | Erosion | 5 | 85 | 35 | 102 |
| 632 | Communication | 6 | 85 | 1,431 | 1,777 |
| 632 | Chromatographic analysis | 5 | 85 | 1,410 | 1,511 |
| 635 | Kinetics | 15 | 84 | 102 | 412 |
| 635 | radiative transfer | 5 | 84 | 465 | 477 |
| 635 | Biogeochemistry | 2 | 84 | 1,195 | 1,214 |
| 635 | Primary health care | 7 | 84 | 1,004 | 1,445 |
| 635 | Learning | 2 | 84 | 1,362 | 1,175 |
| 635 | Nanotubes | 10 | 84 | 39 | 74 |
| 641 | Antigens | 2 | 83 | 792 | 648 |
| 642 | Infections | 3 | 82 | 959 | 1,153 |
| 642 | Radioisotopes | 10 | 82 | 530 | 774 |
| 642 | Bacterial infections | 3 | 82 | 715 | 935 |
| 645 | Biochemical Genetics | 4 | 81 | 360 | 246 |
| 646 | Pediatrics | 7 | 80 | 1,290 | 1,933 |
| 646 | Psycholinguistics | 3 | 80 | 902 | 933 |
| 646 | Iron | 5 | 80 | 221 | 243 |
| 649 | Systems Biology | 6 | 79 | 968 | 1,433 |
| 649 | Psychosomatic Medicine | 3 | 79 | 694 | 812 |
| 649 | global environmental change | 3 | 79 | 789 | 1,021 |
| 649 | livestock | 8 | 79 | 283 | 402 |
| 653 | Endocrinology | 2 | 78 | 2,485 | 2,380 |
| 653 | Seismology | 8 | 78 | 253 | 438 |
| 653 | Medical genetics | 4 | 78 | 1,580 | 2,094 |
| 656 | Hydrometeorology | 1 | 77 | 361 | 312 |
| 656 | foods | 7 | 77 | 45 | 143 |
| 656 | Genetic therapy | 3 | 77 | 859 | 997 |
| 659 | solar power | 2 | 76 | 1,005 | 1,078 |
| 659 | Lightweight concrete | 1 | 76 | 704 | 745 |
| 659 | water reuse | 6 | 76 | 147 | 405 |
| 659 | drug therapy | 4 | 76 | 1,395 | 1,598 |
| 663 | Health Services Administration | 8 | 75 | 513 | 952 |
| 663 | Marine Ecology | 5 | 75 | 594 | 724 |
| 663 | Cognitive Radio Networks | 1 | 75 | 381 | 229 |
| 663 | Hydrocarbons | 6 | 75 | 67 | 81 |
| 663 | Birds | 4 | 75 | 963 | 874 |
| 668 | Evidence-Based Medicine | 1 | 74 | 1,234 | 773 |
| 669 | Integrative Medicine | 5 | 73 | 174 | 177 |
| 669 | Water Microbiology | 3 | 73 | 447 | 531 |
| 671 | Information Retrieval | 2 | 72 | 603 | 528 |
| 671 | Holistic Health | 4 | 72 | 364 | 401 |
| 671 | nucleic acids | 4 | 72 | 1,235 | 1,593 |
| 671 | toxicity testing | 1 | 72 | 1,089 | 726 |
| 671 | venom | 6 | 72 | 470 | 763 |
| 676 | Solar power plants | 1 | 71 | 324 | 232 |
| 676 | Ornithology | 3 | 71 | 930 | 781 |
| 676 | Photovoltaic Cells | 1 | 71 | 326 | 233 |
| 679 | Radiology | 9 | 70 | 711 | 1,020 |
| 679 | Geosynthetics | 3 | 70 | 81 | 73 |
| 679 | structural stability | 1 | 70 | 518 | 419 |
| 679 | Randomized Controlled Trials | 3 | 70 | 906 | 759 |
| 679 | calcification | 2 | 70 | 553 | 552 |
| 684 | Southeast Asia | 7 | 69 | 177 | 249 |
| 685 | Water Purification | 5 | 68 | 892 | 1,130 |
| 685 | DNS | 3 | 68 | 469 | 560 |
| 685 | Language teaching | 6 | 68 | 21 | 75 |
| 685 | Sound | 6 | 68 | 723 | 853 |
| 685 | second language | 6 | 68 | 21 | 75 |
| 685 | DNA | 3 | 68 | 589 | 605 |
| 691 | Conservation Biology | 2 | 67 | 1,312 | 1,236 |
| 691 | Geothermal Energy | 2 | 67 | 328 | 297 |
| 691 | human behavior | 4 | 67 | 1,979 | 2,872 |
| 691 | Carbon | 2 | 67 | 1,444 | 1,682 |
| 691 | psychotherapy | 7 | 67 | 772 | 1,176 |
| 696 | Rock deformation | 4 | 66 | 147 | 277 |
| 696 | Chromatography | 2 | 66 | 1,799 | 1,560 |
| 698 | Physical Therapy | 2 | 65 | 1,397 | 1,306 |
| 699 | Urology | 7 | 64 | 857 | 1,231 |
| 699 | Ethics | 2 | 64 | 1,125 | 827 |
| 699 | Engineering Ethics | 2 | 64 | 259 | 241 |
| 699 | Professional ethics | 2 | 64 | 373 | 318 |
| 699 | Protective coatings | 9 | 64 | 39 | 102 |
| 704 | ozone | 2 | 63 | 166 | 117 |
| 704 | educational planning | 2 | 63 | 545 | 517 |
| 706 | Interferons | 1 | 62 | 483 | 337 |
| 706 | Computational Complexity | 4 | 62 | 911 | 934 |
| 706 | Cellulose | 4 | 62 | 503 | 845 |
| 706 | Cytokine | 1 | 62 | 629 | 591 |
| 710 | micromechanics | 4 | 61 | 506 | 679 |
| 711 | Molecular Genetics | 3 | 60 | 1,551 | 2,035 |
| 712 | Logistics | 4 | 59 | 479 | 820 |
| 712 | Interfaces | 1 | 59 | 657 | 334 |
| 712 | Phylogeny | 2 | 59 | 1,029 | 1,184 |
| 715 | movement | 1 | 58 | 651 | 483 |
| 716 | Gene expression regulation | 3 | 57 | 883 | 1,062 |
| 716 | Genetic regulation | 3 | 57 | 967 | 1,216 |
| 716 | Gerontology | 4 | 57 | 1,509 | 1,647 |
| 716 | scientific societies | 3 | 57 | 674 | 835 |
| 716 | violence | 3 | 57 | 941 | 1,111 |
| 721 | Digital electronics | 2 | 56 | 420 | 217 |
| 721 | Number Theory | 2 | 56 | 1,003 | 527 |
| 721 | Soviet Union | 11 | 56 | 216 | 410 |
| 724 | Microelectronics | 5 | 55 | 1,318 | 1,826 |
| 724 | Agricultural Biotechnology | 4 | 55 | 234 | 184 |
| 724 | Screening | 1 | 55 | 374 | 222 |
| 724 | gene transfer | 2 | 55 | 315 | 337 |
| 724 | cloning | 1 | 55 | 819 | 840 |
| 724 | genetic transformation | 2 | 55 | 315 | 337 |
| 730 | Radio wave propagation | 9 | 54 | 372 | 698 |
| 730 | Semantic web | 1 | 54 | 200 | 142 |
| 730 | Aging | 2 | 54 | 2,558 | 2,339 |
| 730 | Mites | 10 | 54 | 150 | 399 |
| 734 | Photogrammetry | 17 | 53 | 235 | 452 |
| 734 | Social Change | 2 | 53 | 1,290 | 1,640 |
| 734 | food consumption | 2 | 53 | 78 | 114 |
| 734 | Electromagnetic fields | 4 | 53 | 300 | 208 |
| 734 | herbicides | 7 | 53 | 143 | 306 |
| 739 | Eating Disorders | 1 | 52 | 1,206 | 955 |
| 739 | Feeding and Eating Disorders | 1 | 52 | 1,159 | 920 |
| 739 | optical instruments | 3 | 52 | 316 | 343 |
| 739 | feeding behavior | 1 | 52 | 1,101 | 982 |
| 739 | Grasslands | 1 | 52 | 137 | 44 |
| 744 | Naval Architecture | 6 | 51 | 265 | 341 |
| 744 | Artificial Organs | 2 | 51 | 659 | 563 |
| 744 | economic policy | 5 | 51 | 1,817 | 2,006 |
| 744 | Electrophysiology | 3 | 51 | 860 | 933 |
| 744 | Climate | 1 | 51 | 1,041 | 845 |
| 744 | weather | 1 | 51 | 1,015 | 823 |
| 744 | econometric models | 4 | 51 | 535 | 870 |
| 751 | Language Disorders | 1 | 50 | 1,183 | 877 |
| 751 | Radiochemistry | 4 | 50 | 862 | 833 |
| 751 | Emergency Medicine | 8 | 50 | 717 | 1,164 |
| 751 | Soft Condensed Matter | 4 | 50 | 893 | 1,246 |
| 751 | Plasma polymerization | 2 | 50 | 320 | 336 |
| 751 | Writing | 1 | 50 | 514 | 405 |
| 751 | Reading | 1 | 50 | 932 | 687 |
| 751 | primary prevention | 2 | 50 | 494 | 578 |
| 751 | environmental issues | 1 | 50 | 801 | 671 |
| 751 | Digestive system diseases | 2 | 50 | 863 | 909 |
| 761 | histological techniques | 1 | 49 | 886 | 869 |
| 761 | Ultrasound | 3 | 49 | 700 | 891 |
| 761 | Kidney diseases | 4 | 49 | 700 | 965 |
| 764 | Nanomedicine | 4 | 48 | 148 | 467 |
| 764 | Technological Innovations | 4 | 48 | 919 | 1,404 |
| 764 | Host-parasite interactions | 5 | 48 | 829 | 1,605 |
| 764 | rare diseases | 5 | 48 | 410 | 700 |
| 764 | freshwater biology | 5 | 48 | 667 | 1,135 |
| 764 | Multiple sclerosis | 4 | 48 | 465 | 552 |
| 770 | Multiphase Flow | 5 | 47 | 280 | 544 |
| 770 | Immunohistochemistry | 1 | 47 | 346 | 192 |
| 770 | Entropy | 2 | 47 | 1,506 | 1,268 |
| 770 | carcinogens | 3 | 47 | 863 | 1,208 |
| 770 | alcoholism | 4 | 47 | 1,098 | 1,535 |
| 775 | Plant Genetics | 2 | 46 | 774 | 988 |
| 775 | Apoptosis | 2 | 46 | 348 | 499 |
| 775 | neurotoxins | 2 | 46 | 348 | 499 |
| 775 | microwave antennas | 7 | 46 | 193 | 376 |
| 775 | Neurotoxic agents | 2 | 46 | 348 | 499 |
| 775 | cell interaction | 1 | 46 | 1,388 | 1,365 |
| 775 | Cell communication | 1 | 46 | 937 | 964 |
| 775 | Nerve regeneration | 2 | 46 | 348 | 499 |
| 783 | Biodegradation | 3 | 45 | 757 | 1,202 |
| 783 | Chemical structure | 6 | 45 | 270 | 496 |
| 785 | Economic History | 8 | 44 | 2,027 | 2,867 |
| 785 | Carcinogenesis | 1 | 44 | 1,282 | 1,214 |
| 785 | Urban Transportation | 1 | 44 | 302 | 149 |
| 788 | Andrology | 3 | 43 | 549 | 716 |
| 788 | Telecommunications | 4 | 43 | 673 | 917 |
| 788 | Nanophotonics | 1 | 43 | 576 | 541 |
| 788 | Long-Term Care | 1 | 43 | 784 | 766 |
| 788 | Long-term care facilities | 1 | 43 | 777 | 763 |
| 788 | Cardiovascular system | 2 | 43 | 1,239 | 1,644 |
| 788 | Psychophysiology | 4 | 43 | 2,077 | 2,789 |
| 795 | Distance Education | 2 | 42 | 470 | 593 |
| 795 | Bioethics | 3 | 42 | 898 | 988 |
| 795 | Diagnostic microbiology | 1 | 42 | 1,333 | 1,528 |
| 795 | Ultrasonic Imaging | 3 | 42 | 501 | 700 |
| 795 | World Wide Web | 1 | 42 | 836 | 433 |
| 795 | sex crimes | 2 | 42 | 763 | 848 |
| 795 | Meteorites | 1 | 42 | 1,106 | 1,175 |
| 802 | Sedimentology | 4 | 41 | 519 | 882 |
| 802 | health behavior | 1 | 41 | 1,363 | 1,169 |
| 802 | Noise | 3 | 41 | 122 | 130 |
| 802 | Adaptive control systems | 6 | 41 | 378 | 705 |
| 802 | Respiratory system | 1 | 41 | 781 | 783 |
| 802 | place marketing | 1 | 41 | 244 | 308 |
| 808 | Development Economics | 1 | 40 | 775 | 591 |
| 808 | poverty | 1 | 40 | 804 | 636 |
| 808 | Enzyme inhibitors | 1 | 40 | 767 | 645 |
| 808 | Diagnostic Imaging | 4 | 40 | 1,447 | 1,853 |
| 808 | Powder Metallurgy | 3 | 40 | 214 | 139 |
| 808 | Foodborne diseases | 3 | 40 | 228 | 424 |
| 808 | body temperature | 3 | 40 | 534 | 791 |
| 808 | arthritis | 1 | 40 | 1,243 | 1,312 |
| 808 | Cell metabolism | 2 | 40 | 754 | 1,098 |
| 817 | Nuclear Chemistry | 2 | 39 | 1,285 | 1,067 |
| 817 | Social policy | 3 | 39 | 1,039 | 1,205 |
| 817 | Women's health | 3 | 39 | 1,222 | 1,543 |
| 820 | Agricultural Education | 2 | 38 | 101 | 94 |
| 820 | Discourse Analysis | 1 | 38 | 697 | 551 |
| 820 | Animal husbandry | 4 | 38 | 253 | 443 |
| 820 | adolescence | 2 | 38 | 1,085 | 1,225 |
| 820 | Radiobiology | 4 | 38 | 911 | 1,334 |
| 820 | Adolescent | 2 | 38 | 2,251 | 2,275 |
| 820 | Steroids | 3 | 38 | 843 | 1,166 |
| 820 | Informatics | 2 | 38 | 1,026 | 1,171 |
| 820 | Aquatic ecology | 3 | 38 | 948 | 1,175 |
| 829 | Geriatric Medicine | 1 | 37 | 324 | 281 |
| 829 | Environmental Microbiology | 3 | 37 | 1,288 | 2,065 |
| 829 | Dietetics | 2 | 37 | 695 | 737 |
| 829 | Clinical Biochemistry | 6 | 37 | 731 | 1,296 |
| 829 | Municipal Engineering | 3 | 37 | 342 | 646 |
| 829 | Freeze-Drying | 2 | 37 | 470 | 569 |
| 829 | Hypothermia | 2 | 37 | 470 | 569 |
| 829 | Freeze Drying | 2 | 37 | 470 | 569 |
| 829 | Physical fitness | 4 | 37 | 900 | 1,402 |
| 829 | ovary | 1 | 37 | 388 | 367 |
| 839 | Community Psychology | 1 | 36 | 905 | 768 |
| 839 | Production Planning | 1 | 36 | 556 | 595 |
| 839 | Immunopathology | 2 | 36 | 1,098 | 1,337 |
| 839 | transgenic organisms | 1 | 36 | 457 | 473 |
| 839 | transgenic animals | 1 | 36 | 446 | 458 |
| 839 | Water quality | 3 | 36 | 190 | 407 |
| 839 | Mutagenesis | 2 | 36 | 580 | 648 |
| 839 | Production Control | 1 | 36 | 537 | 591 |
| 839 | teratogenic agents | 2 | 36 | 307 | 334 |
| 839 | thinking | 3 | 36 | 300 | 576 |
| 839 | Social behavior | 1 | 36 | 1,735 | 1,511 |
| 839 | biopolymers | 2 | 36 | 1,312 | 1,527 |
| 839 | biomedicine | 1 | 36 | 893 | 917 |
| 839 | Attention | 4 | 36 | 1,188 | 1,741 |
| 839 | Creativity | 3 | 36 | 286 | 609 |
| 854 | Mobile Computing | 2 | 35 | 1,298 | 1,349 |
| 854 | Computer Vision | 2 | 35 | 1,328 | 1,534 |
| 854 | Educational Psychology | 5 | 35 | 1,057 | 1,747 |
| 854 | Computational Intelligence | 6 | 35 | 374 | 931 |
| 854 | analysis | 2 | 35 | 429 | 531 |
| 854 | packaging | 3 | 35 | 108 | 225 |
| 860 | Anthropology | 4 | 34 | 1,281 | 1,637 |
| 860 | Forensic Genetics | 1 | 34 | 423 | 399 |
| 860 | Plant Morphology | 2 | 34 | 767 | 860 |
| 860 | Multivariate Analysis | 3 | 34 | 571 | 714 |
| 860 | Immunity | 4 | 34 | 1,264 | 2,098 |
| 860 | Birth control | 3 | 34 | 419 | 756 |
| 866 | Archaeology | 4 | 33 | 1,107 | 1,325 |
| 866 | Clinical Pharmacology | 3 | 33 | 1,126 | 1,540 |
| 866 | psychopathology | 3 | 33 | 305 | 470 |
| 866 | Wind power | 2 | 33 | 379 | 420 |
| 866 | cell physiology | 3 | 33 | 1,257 | 1,886 |
| 871 | Medical Oncology | 3 | 32 | 1,296 | 1,871 |
| 871 | Social History | 1 | 32 | 783 | 477 |
| 871 | Psychopharmacology | 5 | 32 | 998 | 1,727 |
| 871 | Behavioral research | 8 | 32 | 238 | 863 |
| 871 | Diffusion of innovations | 1 | 32 | 242 | 225 |
| 871 | Environmental forensics | 3 | 32 | 49 | 118 |
| 871 | Cyberterrorism | 2 | 32 | 48 | 148 |
| 871 | breastfeeding | 2 | 32 | 602 | 776 |
| 871 | Hormones | 2 | 32 | 1,232 | 1,562 |
| 871 | Hospitality industry | 2 | 32 | 547 | 799 |
| 871 | aquatic organisms | 1 | 32 | 12 | 37 |
| 871 | behavior therapy | 4 | 32 | 678 | 1,063 |
| 871 | Microorganisms | 2 | 32 | 1,194 | 1,607 |
| 871 | Water chemistry | 3 | 32 | 323 | 617 |
| 885 | Nuclear Medicine | 3 | 31 | 797 | 993 |
| 885 | Visual Communication | 4 | 31 | 352 | 644 |
| 885 | Hematopoietic stem cell transplantation | 1 | 31 | 646 | 731 |
| 885 | Cognitive Therapy | 6 | 31 | 393 | 892 |
| 885 | Image enhancement | 4 | 31 | 271 | 581 |
| 885 | Adolescent Psychology | 1 | 31 | 1,265 | 1,145 |
| 885 | Interactive multimedia | 1 | 31 | 962 | 945 |
| 892 | biobanks | 3 | 30 | 99 | 183 |
| 892 | Access to Information | 1 | 30 | 461 | 484 |
| 892 | Shipping | 1 | 30 | 195 | 103 |
| 892 | Cerebellum | 1 | 30 | 504 | 486 |
| 892 | mammals | 1 | 30 | 1,462 | 1,262 |
| 892 | Information dissemination | 1 | 30 | 461 | 484 |
| 892 | Cerebellar ataxia | 1 | 30 | 504 | 486 |
| 899 | Geriatrics | 7 | 29 | 1,702 | 2,959 |
| 899 | Optical Communications | 4 | 29 | 685 | 1,002 |
| 899 | Computational Linguistics | 6 | 29 | 310 | 676 |
| 899 | Plate Tectonics | 1 | 29 | 505 | 454 |
| 899 | International Finance | 2 | 29 | 1,887 | 2,120 |
| 899 | Marine resources | 2 | 29 | 839 | 1,166 |
| 899 | scholarly publishing | 4 | 29 | 81 | 210 |
| 899 | Fluorescence | 3 | 29 | 462 | 693 |
| 899 | bees | 5 | 29 | 289 | 565 |
| 899 | language | 3 | 29 | 803 | 1,143 |
| 909 | Reproductive health | 2 | 28 | 906 | 1,190 |
| 909 | Hemophilia | 1 | 28 | 519 | 479 |
| 909 | plasma spraying | 3 | 28 | 223 | 395 |
| 909 | drug addiction | 2 | 28 | 1,130 | 1,497 |
| 909 | textile fibers | 2 | 28 | 578 | 635 |
| 914 | Graph Theory | 5 | 27 | 566 | 749 |
| 914 | Special Education | 2 | 27 | 967 | 982 |
| 914 | Microbial Genetics | 5 | 27 | 227 | 653 |
| 914 | Herbal medicine | 2 | 27 | 911 | 1,479 |
| 914 | Flow chemistry | 1 | 27 | 79 | 46 |
| 914 | microwave communication systems | 3 | 27 | 387 | 574 |
| 914 | Astrocytes | 1 | 27 | 652 | 826 |
| 914 | construction industry | 3 | 27 | 141 | 243 |
| 914 | Classification | 2 | 27 | 371 | 414 |
| 914 | Phytotherapy | 2 | 27 | 867 | 1,283 |
| 914 | Microwave devices | 3 | 27 | 469 | 632 |
| 925 | Early Childhood Education | 3 | 26 | 612 | 854 |
| 925 | Contraception | 1 | 26 | 904 | 945 |
| 925 | Exercise therapy | 6 | 26 | 233 | 696 |
| 925 | Child Development | 4 | 26 | 1,460 | 2,331 |
| 925 | forest policy | 1 | 26 | 630 | 640 |
| 925 | Insects | 6 | 26 | 1,030 | 1,758 |
| 931 | International Relations | 2 | 25 | 1,209 | 1,084 |
| 931 | Environmental Law | 3 | 25 | 1,032 | 1,944 |
| 931 | Functional equations | 3 | 25 | 208 | 238 |
| 931 | Neuroanatomy | 1 | 25 | 483 | 506 |
| 931 | Fractional Calculus | 1 | 25 | 363 | 290 |
| 931 | Family | 4 | 25 | 818 | 1,396 |
| 931 | Roads | 3 | 25 | 637 | 807 |
| 931 | public works | 3 | 25 | 147 | 225 |
| 931 | Mountains | 3 | 25 | 397 | 630 |
| 931 | planning | 2 | 25 | 987 | 1,276 |
| 941 | Developmental Psychology | 1 | 24 | 1,534 | 1,484 |
| 941 | Disability Studies | 1 | 24 | 480 | 451 |
| 941 | Geodesy | 4 | 24 | 642 | 1,225 |
| 941 | Learning disabilities | 2 | 24 | 985 | 1,201 |
| 941 | Business | 1 | 24 | 2,975 | 2,982 |
| 941 | Monomers | 3 | 24 | 63 | 151 |
| 941 | Central Asia | 1 | 24 | 425 | 391 |
| 941 | human development | 1 | 24 | 1,245 | 1,332 |
| 949 | Ergonomics | 2 | 23 | 1,074 | 1,331 |
| 949 | Historic Preservation | 2 | 23 | 165 | 221 |
| 949 | Molecular Imaging | 1 | 23 | 763 | 859 |
| 949 | Forest genetics | 1 | 23 | 497 | 465 |
| 949 | Menopause | 1 | 23 | 523 | 572 |
| 954 | Health Services Research | 3 | 22 | 1,472 | 2,225 |
| 954 | Pharmacogenetics | 1 | 22 | 1,221 | 1,367 |
| 954 | Cryptography | 7 | 22 | 353 | 799 |
| 954 | cosmic rays | 1 | 22 | 698 | 633 |
| 954 | Biomarkers | 1 | 22 | 755 | 753 |
| 954 | Semigroups | 6 | 22 | 165 | 304 |
| 954 | families | 3 | 22 | 876 | 1,223 |
| 954 | magmatism | 5 | 22 | 12 | 40 |
| 954 | chronic disease | 2 | 22 | 362 | 563 |
| 954 | biological agents | 4 | 22 | 599 | 648 |
| 954 | biochemical markers | 1 | 22 | 1,036 | 1,075 |
| 954 | data protection | 1 | 22 | 1,108 | 971 |
| 954 | Chronic diseases | 2 | 22 | 673 | 978 |
| 967 | Hematology | 4 | 21 | 1,369 | 2,161 |
| 967 | Mining Geology | 1 | 21 | 187 | 154 |
| 967 | phytopathogenic bacteria | 3 | 21 | 229 | 557 |
| 967 | reasoning | 1 | 21 | 814 | 728 |
| 967 | Protein engineering | 1 | 21 | 371 | 450 |
| 967 | molecular design | 1 | 21 | 412 | 457 |
| 973 | health services accessibility | 1 | 20 | 1,468 | 1,524 |
| 973 | Schizophrenia | 3 | 20 | 846 | 1,356 |
| 973 | Child | 6 | 20 | 1,479 | 2,794 |
| 973 | Speech Perception | 1 | 20 | 572 | 651 |
| 973 | auditory perception | 1 | 20 | 684 | 755 |
| 973 | Fire ecology | 1 | 20 | 135 | 233 |
| 973 | Socioeconomic Factors | 1 | 20 | 1,310 | 1,538 |
| 973 | Organic farming | 2 | 20 | 45 | 118 |
| 973 | infection | 2 | 20 | 1,571 | 2,162 |
| 973 | innovation | 1 | 20 | 1,026 | 1,252 |
| 973 | population geography | 1 | 20 | 679 | 741 |
| 973 | Acarology | 7 | 20 | 134 | 585 |
| 985 | Risk Management | 1 | 19 | 1,220 | 1,274 |
| 985 | Regenerative Medicine | 3 | 19 | 130 | 355 |
| 985 | Statistical Mechanics | 8 | 19 | 382 | 878 |
| 985 | Green Technology | 2 | 19 | 574 | 1,083 |
| 985 | Decision Support Systems | 1 | 19 | 345 | 364 |
| 985 | Database Security | 1 | 19 | 200 | 200 |
| 985 | Flood forecasting | 1 | 19 | 258 | 341 |
| 985 | peace | 1 | 19 | 780 | 761 |
| 985 | Alloys | 4 | 19 | 225 | 365 |
| 985 | economic analysis | 2 | 19 | 318 | 593 |
| 985 | heredity | 3 | 19 | 615 | 1,038 |
| 985 | drug development | 1 | 19 | 1,333 | 1,653 |
| 985 | child abuse | 2 | 19 | 940 | 1,443 |
| 985 | Mollusks | 2 | 19 | 316 | 355 |
| 999 | Otolaryngology | 3 | 18 | 471 | 756 |
| 999 | Anatomy | 3 | 18 | 1,755 | 2,445 |