| 1 | Chemistry | 669 | 43.4K | 599 | 452 |
| 2 | Physics | 544 | 37.7K | 712 | 672 |
| 3 | Biochemistry | 808 | 22.1K | 485 | 630 |
| 4 | Materials | 301 | 19.2K | 590 | 388 |
| 5 | Catalysis | 169 | 16.1K | 449 | 222 |
| 6 | Botany | 608 | 14.6K | 103 | 233 |
| 7 | Chemical Engineering | 438 | 14.6K | 206 | 272 |
| 8 | Biology | 134 | 12.9K | 1445 | 1217 |
| 9 | Microbiology | 104 | 10.6K | 1171 | 674 |
| 10 | Water pollution | 141 | 9.9K | 186 | 120 |
| 11 | Science | 174 | 9.6K | 1324 | 1524 |
| 12 | Ecology | 115 | 9.5K | 965 | 684 |
| 13 | Biomedical Engineering | 130 | 9.3K | 601 | 283 |
| 14 | Pollution | 122 | 8.8K | 742 | 551 |
| 15 | Water | 97 | 8.7K | 278 | 172 |
| 16 | Nanotechnology | 119 | 8.5K | 837 | 589 |
| 17 | Astronomy | 186 | 8.5K | 444 | 482 |
| 18 | Biotechnology | 129 | 7.7K | 783 | 640 |
| 19 | Energy Conversion | 47 | 7.6K | 213 | 134 |
| 20 | Database Management | 177 | 7.5K | 17 | 25 |
| 21 | Databases | 174 | 7.3K | 7 | 6 |
| 22 | Polymers | 148 | 7.0K | 653 | 431 |
| 23 | Condensed Matter | 127 | 6.7K | 601 | 425 |
| 24 | Environment | 72 | 6.5K | 920 | 723 |
| 25 | Molecular Biology | 97 | 6.4K | 1668 | 1320 |
| 26 | Astrophysics | 137 | 6.1K | 584 | 673 |
| 27 | Solid State Physics | 162 | 6.0K | 596 | 471 |
| 28 | Electronics | 63 | 5.8K | 769 | 263 |
| 28 | Environmental Health | 68 | 5.8K | 1042 | 600 |
| 30 | polymerization | 106 | 5.8K | 669 | 394 |
| 31 | Telecommunication | 114 | 5.8K | 289 | 224 |
| 32 | fuel cells | 33 | 5.8K | 297 | 107 |
| 33 | Signal Processing | 96 | 5.7K | 357 | 250 |
| 34 | Computer Graphics | 102 | 5.7K | 148 | 103 |
| 35 | Materials Science | 100 | 5.6K | 826 | 610 |
| 36 | Bioengineering | 97 | 5.6K | 595 | 568 |
| 37 | Renewable Energy Sources | 38 | 5.3K | 548 | 298 |
| 38 | Environmental Chemistry | 29 | 5.0K | 502 | 223 |
| 39 | Biophysics | 105 | 4.7K | 1050 | 847 |
| 40 | Nervous system | 47 | 4.6K | 538 | 301 |
| 41 | Image Processing | 50 | 4.5K | 429 | 216 |
| 42 | Environmental Policy | 68 | 4.5K | 459 | 343 |
| 43 | environmental pollution | 63 | 4.5K | 877 | 548 |
| 44 | Environmental monitoring | 42 | 4.3K | 916 | 393 |
| 45 | computer networks | 121 | 4.2K | 171 | 137 |
| 46 | Physical Chemistry | 36 | 4.2K | 566 | 212 |
| 47 | Bioorganic chemistry | 18 | 4.1K | 1293 | 262 |
| 48 | Wireless Communication Systems | 98 | 4.0K | 267 | 212 |
| 49 | Mathematics | 274 | 3.9K | 539 | 484 |
| 50 | Research | 103 | 3.9K | 1594 | 1403 |
| 51 | Environmental Engineering | 35 | 3.7K | 1007 | 496 |
| 52 | Artificial Intelligence | 76 | 3.6K | 572 | 430 |
| 53 | Medical Laboratory Science | 26 | 3.6K | 641 | 241 |
| 54 | Organic Chemistry | 13 | 3.6K | 1795 | 359 |
| 55 | Medicine | 84 | 3.4K | 2227 | 2152 |
| 56 | Plastics | 24 | 3.3K | 476 | 56 |
| 57 | biocatalysis | 6 | 3.3K | 98 | 28 |
| 57 | Homogeneous catalysis | 6 | 3.3K | 98 | 28 |
| 57 | Heterogeneous catalysis | 6 | 3.3K | 98 | 28 |
| 60 | Energy Storage | 37 | 3.3K | 222 | 99 |
| 61 | Radio | 21 | 3.0K | 579 | 252 |
| 62 | Microelectronics | 30 | 3.0K | 553 | 327 |
| 63 | Neurology | 24 | 3.0K | 2085 | 1236 |
| 63 | Optics | 148 | 3.0K | 635 | 598 |
| 65 | lasers | 108 | 2.9K | 199 | 158 |
| 66 | miniaturization | 18 | 2.9K | 727 | 371 |
| 67 | Quantum electronics | 65 | 2.8K | 237 | 127 |
| 68 | Nanostructured Materials | 42 | 2.8K | 897 | 572 |
| 69 | Colloids | 91 | 2.7K | 653 | 737 |
| 70 | Natural history | 19 | 2.7K | 1511 | 1868 |
| 71 | Energy Harvesting | 20 | 2.7K | 120 | 81 |
| 72 | Statistical physics | 98 | 2.6K | 608 | 581 |
| 73 | Soil Science | 54 | 2.6K | 258 | 203 |
| 74 | sanitation | 25 | 2.6K | 491 | 395 |
| 75 | Electrochemistry | 144 | 2.5K | 545 | 665 |
| 76 | Analytical Chemistry | 57 | 2.5K | 1141 | 872 |
| 77 | Mathematical Physics | 72 | 2.4K | 463 | 342 |
| 78 | Product life cycle | 36 | 2.4K | 15 | 17 |
| 79 | green products | 35 | 2.4K | 14 | 17 |
| 80 | energy development | 15 | 2.3K | 216 | 123 |
| 81 | Waste management | 67 | 2.3K | 73 | 47 |
| 82 | Food | 59 | 2.2K | 484 | 463 |
| 83 | Energy Policy | 57 | 2.2K | 407 | 498 |
| 84 | organization | 6 | 2.2K | 495 | 166 |
| 85 | Toxicology | 31 | 2.2K | 1588 | 952 |
| 86 | Operations Research | 44 | 2.2K | 448 | 279 |
| 86 | Water quality management | 68 | 2.2K | 134 | 103 |
| 88 | energy conservation | 24 | 2.2K | 571 | 391 |
| 89 | Water Purification | 64 | 2.2K | 58 | 43 |
| 90 | Geophysics | 98 | 2.1K | 649 | 824 |
| 91 | Engineering | 98 | 2.1K | 491 | 469 |
| 92 | Optical materials | 29 | 2.1K | 896 | 571 |
| 93 | Manufacturing Processes | 120 | 2.1K | 176 | 282 |
| 94 | Data Mining | 15 | 2.1K | 558 | 201 |
| 95 | Green Chemistry | 14 | 2.0K | 816 | 361 |
| 96 | Economics | 71 | 2.0K | 845 | 705 |
| 97 | Production Engineering | 125 | 2.0K | 112 | 158 |
| 98 | actuators | 49 | 2.0K | 397 | 354 |
| 98 | transducers | 49 | 2.0K | 397 | 354 |
| 100 | Sustainable Engineering | 14 | 2.0K | 712 | 251 |
| 101 | Information Theory | 53 | 1.9K | 214 | 208 |
| 102 | Photonics | 40 | 1.9K | 501 | 444 |
| 103 | Behavior | 20 | 1.9K | 1216 | 769 |
| 104 | Information Technology | 19 | 1.9K | 832 | 284 |
| 105 | nanoscience | 25 | 1.9K | 1066 | 760 |
| 106 | Medical Physics | 25 | 1.9K | 613 | 366 |
| 107 | Technology | 63 | 1.8K | 759 | 682 |
| 108 | Microbial Ecology | 26 | 1.8K | 718 | 631 |
| 109 | Communication | 24 | 1.7K | 581 | 344 |
| 110 | energy resources | 37 | 1.7K | 231 | 327 |
| 111 | Geochemistry | 34 | 1.7K | 614 | 508 |
| 112 | Business | 14 | 1.7K | 916 | 505 |
| 113 | Oncology | 4 | 1.7K | 2154 | 946 |
| 114 | Composite Materials | 34 | 1.7K | 792 | 696 |
| 115 | human behavior | 17 | 1.7K | 937 | 665 |
| 116 | Surface Chemistry | 55 | 1.7K | 953 | 985 |
| 117 | Animal Behavior | 9 | 1.6K | 1076 | 459 |
| 118 | Geology | 56 | 1.6K | 746 | 688 |
| 119 | Membranes | 13 | 1.6K | 870 | 432 |
| 120 | Neurophysiology | 15 | 1.6K | 1360 | 858 |
| 121 | Rheology | 66 | 1.6K | 30 | 52 |
| 122 | Nutrition | 35 | 1.6K | 1226 | 1023 |
| 123 | rehabilitation | 16 | 1.6K | 897 | 397 |
| 124 | Nonlinear Dynamics | 52 | 1.6K | 433 | 408 |
| 125 | Automation | 41 | 1.5K | 524 | 566 |
| 126 | Plant Ecology | 32 | 1.5K | 425 | 407 |
| 127 | environmental protection | 33 | 1.5K | 902 | 770 |
| 128 | Psychophysiology | 23 | 1.5K | 1046 | 833 |
| 129 | Bioenergetics | 29 | 1.5K | 134 | 127 |
| 129 | Energy metabolism | 29 | 1.5K | 115 | 117 |
| 129 | cell membrane | 29 | 1.5K | 111 | 109 |
| 132 | Ergonomics | 27 | 1.4K | 274 | 115 |
| 133 | Biodiversity conservation | 13 | 1.4K | 761 | 673 |
| 134 | Neuropsychology | 11 | 1.4K | 1223 | 496 |
| 135 | Fluid Dynamics | 40 | 1.4K | 186 | 153 |
| 136 | Earth Sciences | 45 | 1.4K | 772 | 744 |
| 137 | Numerical Analysis | 61 | 1.4K | 305 | 259 |
| 138 | Spectrum analysis | 59 | 1.3K | 1060 | 1245 |
| 139 | Biochemical Engineering | 38 | 1.3K | 943 | 1387 |
| 140 | data collection | 9 | 1.3K | 552 | 233 |
| 141 | food technology | 23 | 1.3K | 860 | 541 |
| 142 | management | 29 | 1.2K | 1038 | 961 |
| 143 | Light | 5 | 1.1K | 742 | 402 |
| 144 | Petrology | 17 | 1.1K | 412 | 286 |
| 145 | behavioral medicine | 4 | 1.1K | 1135 | 359 |
| 145 | Soft Condensed Matter | 31 | 1.1K | 266 | 242 |
| 147 | Metallurgy | 37 | 1.1K | 638 | 610 |
| 148 | Industrial Engineering | 43 | 1.1K | 317 | 371 |
| 149 | Nuclear Physics | 53 | 1.1K | 1332 | 1410 |
| 149 | Chemical industry | 256 | 1.1K | 21 | 118 |
| 151 | Thermodynamics | 38 | 1.1K | 148 | 71 |
| 152 | Product Design | 80 | 1.1K | 37 | 43 |
| 153 | Climate change | 8 | 1.1K | 616 | 673 |
| 153 | Eutrophication | 8 | 1.1K | 597 | 668 |
| 155 | Psychology | 36 | 1.0K | 1326 | 1240 |
| 156 | Biodiversity | 11 | 1.0K | 1096 | 602 |
| 157 | Biosensors | 9 | 1.0K | 746 | 443 |
| 158 | Public Health | 55 | 999 | 1142 | 1686 |
| 159 | Bioelectronics | 8 | 998 | 671 | 392 |
| 160 | System analysis | 55 | 997 | 335 | 472 |
| 161 | biopolymers | 28 | 994 | 313 | 281 |
| 162 | Mechanics | 32 | 993 | 220 | 147 |
| 163 | Cognitive Science | 10 | 975 | 761 | 418 |
| 164 | Neural circuitry | 30 | 946 | 467 | 486 |
| 165 | Computer Vision | 7 | 945 | 770 | 369 |
| 166 | Genetics | 6 | 939 | 2961 | 1703 |
| 167 | Continuum Mechanics | 25 | 936 | 8 | 5 |
| 168 | Biocompatible Materials | 21 | 923 | 1610 | 1644 |
| 169 | China | 21 | 895 | 1066 | 612 |
| 170 | Agricultural Chemistry | 17 | 894 | 941 | 662 |
| 171 | soil microbiology | 11 | 869 | 733 | 609 |
| 172 | Energy Consumption | 2 | 858 | 525 | 99 |
| 173 | probabilities | 48 | 823 | 210 | 175 |
| 174 | Transportation | 23 | 816 | 548 | 470 |
| 174 | Mass Spectrometry | 10 | 816 | 644 | 303 |
| 176 | Public Policy | 27 | 805 | 444 | 429 |
| 176 | Combustion | 26 | 805 | 360 | 335 |
| 178 | Social Change | 10 | 778 | 441 | 307 |
| 179 | Mobile Computing | 29 | 775 | 219 | 248 |
| 180 | Europe | 65 | 767 | 498 | 819 |
| 181 | Nanoparticles | 11 | 765 | 1013 | 630 |
| 182 | Microwaves | 23 | 746 | 512 | 344 |
| 183 | Process Control | 11 | 729 | 394 | 341 |
| 184 | marketing | 8 | 725 | 1132 | 677 |
| 184 | innovation | 11 | 725 | 223 | 262 |
| 186 | Food Microbiology | 11 | 723 | 584 | 461 |
| 187 | Chemical processes | 33 | 699 | 63 | 73 |
| 188 | Semiconductors | 41 | 696 | 423 | 454 |
| 188 | exobiology | 14 | 696 | 76 | 83 |
| 190 | Paleoecology | 6 | 693 | 765 | 357 |
| 191 | Pediatric Neurology | 1 | 692 | 1559 | 586 |
| 191 | genome | 3 | 692 | 1639 | 814 |
| 193 | Power Electronics | 7 | 690 | 760 | 449 |
| 194 | Plant diseases | 8 | 682 | 1258 | 608 |
| 195 | Mineralogy | 17 | 680 | 567 | 449 |
| 196 | United States | 16 | 678 | 2331 | 1613 |
| 197 | Information Retrieval | 6 | 673 | 280 | 122 |
| 198 | Stochastic Processes | 13 | 660 | 307 | 89 |
| 199 | Nanostructures | 9 | 649 | 1197 | 795 |
| 200 | Environmental Law | 3 | 641 | 1177 | 556 |
| 201 | Project Management | 7 | 640 | 124 | 114 |
| 202 | Fiber Optics | 27 | 637 | 279 | 282 |
| 203 | Crystallography | 16 | 635 | 723 | 299 |
| 203 | Cognition | 9 | 635 | 986 | 641 |
| 205 | Paleoclimatology | 4 | 633 | 959 | 424 |
| 205 | Paleogeography | 4 | 633 | 840 | 343 |
| 207 | Flexible manufacturing systems | 17 | 625 | 51 | 50 |
| 207 | Solar System | 15 | 625 | 340 | 313 |
| 209 | Cybernetics | 11 | 611 | 802 | 603 |
| 210 | Minerals | 13 | 606 | 216 | 116 |
| 211 | Population | 6 | 603 | 587 | 239 |
| 212 | Bacteriology | 6 | 591 | 1411 | 944 |
| 213 | Structural dynamics | 11 | 590 | 500 | 390 |
| 214 | Computational Biology | 19 | 588 | 941 | 1050 |
| 215 | Metals | 17 | 587 | 944 | 822 |
| 216 | Biogeochemistry | 6 | 584 | 770 | 542 |
| 217 | Cancer | 9 | 579 | 2197 | 1866 |
| 218 | Metallography | 10 | 578 | 420 | 205 |
| 219 | Carbon | 4 | 576 | 1206 | 689 |
| 220 | Microorganisms | 2 | 573 | 1347 | 506 |
| 221 | Liquid Crystals | 33 | 567 | 188 | 103 |
| 222 | Systems Engineering | 14 | 553 | 968 | 666 |
| 222 | Sustainable Development | 19 | 553 | 592 | 742 |
| 224 | Mechanical Engineering | 41 | 551 | 593 | 650 |
| 225 | Production Management | 6 | 545 | 775 | 584 |
| 226 | Human-Computer Interaction | 27 | 544 | 298 | 471 |
| 227 | Cosmochemistry | 3 | 543 | 935 | 335 |
| 228 | Electrophoresis | 8 | 540 | 1049 | 555 |
| 229 | Recycling | 7 | 534 | 335 | 301 |
| 230 | Soil biology | 13 | 530 | 400 | 500 |
| 231 | Conservation Biology | 6 | 523 | 791 | 481 |
| 232 | Imaging systems | 11 | 512 | 280 | 80 |
| 233 | enzymes | 12 | 511 | 750 | 629 |
| 234 | Hydrology | 19 | 506 | 940 | 994 |
| 235 | Remote Sensing | 31 | 502 | 276 | 317 |
| 236 | Engineering Geology | 17 | 499 | 549 | 537 |
| 236 | Organic Geochemistry | 1 | 499 | 613 | 177 |
| 238 | Technological Innovations | 6 | 493 | 712 | 302 |
| 239 | community development | 4 | 491 | 482 | 103 |
| 239 | plant communities | 10 | 491 | 567 | 566 |
| 241 | Natural resources | 13 | 490 | 281 | 288 |
| 241 | vibration | 8 | 490 | 706 | 372 |
| 243 | Histology | 7 | 482 | 1273 | 873 |
| 244 | medical education | 15 | 475 | 723 | 569 |
| 245 | Pharmaceutical Chemistry | 16 | 471 | 1899 | 1992 |
| 246 | Housing | 4 | 469 | 390 | 133 |
| 247 | Urban Planning | 3 | 466 | 360 | 108 |
| 247 | coal | 10 | 466 | 940 | 827 |
| 249 | Land use | 13 | 465 | 407 | 402 |
| 250 | Social Sciences | 33 | 462 | 821 | 960 |
| 250 | biological factors | 27 | 462 | 476 | 759 |
| 252 | Soil ecology | 11 | 451 | 330 | 323 |
| 253 | Adhesion | 17 | 446 | 123 | 110 |
| 253 | adhesives | 17 | 446 | 135 | 111 |
| 253 | proteins | 6 | 446 | 1590 | 930 |
| 256 | Electrical Engineering | 63 | 443 | 696 | 1023 |
| 257 | Microbial Biotechnology | 7 | 442 | 532 | 254 |
| 258 | Industrial Microbiology | 11 | 436 | 967 | 1006 |
| 259 | Educational Psychology | 12 | 433 | 637 | 577 |
| 259 | software | 7 | 433 | 652 | 407 |
| 261 | Planets | 20 | 432 | 631 | 901 |
| 262 | natural disasters | 13 | 429 | 467 | 477 |
| 263 | Solar Energy | 12 | 427 | 842 | 884 |
| 264 | Regional Planning | 21 | 425 | 486 | 563 |
| 265 | Functional Analysis | 14 | 424 | 531 | 337 |
| 266 | global environmental change | 13 | 420 | 305 | 463 |
| 267 | starch | 7 | 419 | 161 | 80 |
| 267 | health planning | 17 | 419 | 800 | 696 |
| 269 | Marine Biology | 10 | 410 | 1484 | 1243 |
| 270 | Machine Learning | 10 | 399 | 129 | 146 |
| 270 | Plant physiology | 12 | 399 | 1103 | 1250 |
| 272 | Computer Science | 24 | 395 | 524 | 548 |
| 273 | Health Education | 14 | 393 | 805 | 687 |
| 273 | Proteome | 5 | 393 | 967 | 692 |
| 275 | Statistics | 13 | 385 | 1333 | 993 |
| 276 | Earthquake Engineering | 13 | 384 | 657 | 650 |
| 276 | Ethology | 3 | 384 | 1453 | 921 |
| 278 | mass transfer | 18 | 381 | 688 | 843 |
| 278 | disabilities | 3 | 381 | 744 | 240 |
| 280 | Pathology | 6 | 378 | 1658 | 1298 |
| 281 | Control Theory | 20 | 375 | 651 | 687 |
| 282 | Groundwater | 18 | 372 | 147 | 211 |
| 283 | concrete | 5 | 370 | 761 | 573 |
| 284 | visualization | 9 | 369 | 867 | 388 |
| 285 | Psycholinguistics | 16 | 368 | 332 | 458 |
| 286 | Sociology | 26 | 366 | 840 | 1285 |
| 287 | Algorithms | 20 | 365 | 112 | 144 |
| 288 | Developing countries | 11 | 362 | 1169 | 997 |
| 289 | Environmental Geology | 13 | 358 | 695 | 736 |
| 290 | research and development | 2 | 355 | 485 | 142 |
| 291 | Ecological Engineering | 3 | 354 | 684 | 283 |
| 292 | Electrochemical Analysis | 7 | 353 | 1047 | 651 |
| 292 | mathematical analysis | 26 | 353 | 822 | 767 |
| 294 | Engineering Mathematics | 15 | 347 | 751 | 597 |
| 295 | Biomass Energy | 7 | 345 | 1693 | 1550 |
| 295 | Soil | 2 | 345 | 111 | 48 |
| 297 | Soil fertility | 10 | 343 | 114 | 172 |
| 298 | Forest Ecology | 5 | 342 | 811 | 564 |
| 299 | Molecular Microbiology | 4 | 337 | 747 | 645 |
| 299 | Forest Management | 4 | 337 | 873 | 529 |
| 301 | Heat Exchangers | 9 | 336 | 708 | 687 |
| 302 | radioactive waste | 7 | 333 | 460 | 548 |
| 302 | industrial waste | 7 | 333 | 483 | 550 |
| 302 | Hazardous waste | 7 | 333 | 572 | 589 |
| 302 | Fungi | 6 | 333 | 744 | 623 |
| 306 | Meteorology | 7 | 332 | 1537 | 1434 |
| 306 | Nuclear Fusion | 6 | 332 | 472 | 247 |
| 308 | Lightweight concrete | 3 | 331 | 414 | 307 |
| 309 | micromechanics | 11 | 327 | 254 | 252 |
| 310 | Brain | 13 | 321 | 1393 | 1577 |
| 311 | Ocean Engineering | 14 | 320 | 811 | 882 |
| 312 | Combinatorial analysis | 27 | 318 | 220 | 221 |
| 313 | Oceanography | 8 | 314 | 1103 | 979 |
| 314 | solar cells | 7 | 313 | 597 | 566 |
| 315 | Telecommunication Systems | 22 | 306 | 445 | 581 |
| 316 | Lipids | 15 | 303 | 490 | 841 |
| 317 | natural products | 5 | 298 | 1437 | 775 |
| 318 | Psychiatry | 7 | 297 | 2964 | 2535 |
| 318 | Systems Analysis | 9 | 297 | 581 | 406 |
| 320 | Building Materials | 7 | 296 | 1168 | 1170 |
| 321 | Intelligent Transportation Systems | 19 | 295 | 342 | 659 |
| 321 | Environmental Management | 13 | 295 | 1470 | 2061 |
| 323 | Solid State Chemistry | 22 | 293 | 980 | 1230 |
| 323 | Health | 11 | 293 | 1102 | 1089 |
| 325 | Medical innovations | 4 | 283 | 909 | 1097 |
| 326 | Paleontology | 8 | 282 | 803 | 579 |
| 327 | Rock Mechanics | 11 | 281 | 441 | 514 |
| 328 | Robotics | 18 | 279 | 669 | 915 |
| 329 | Physiology | 4 | 278 | 3734 | 2701 |
| 329 | emergency management | 8 | 278 | 309 | 283 |
| 331 | Aquatic ecology | 2 | 275 | 1157 | 424 |
| 332 | Photochemistry | 5 | 274 | 1349 | 906 |
| 332 | Decision Support Systems | 1 | 274 | 320 | 34 |
| 332 | Fashion merchandising | 2 | 274 | 49 | 4 |
| 332 | electrocatalysis | 2 | 274 | 131 | 12 |
| 332 | Fashion | 2 | 274 | 175 | 18 |
| 337 | Soil Mechanics | 12 | 272 | 533 | 612 |
| 337 | Pharmacognosy | 2 | 272 | 2242 | 1193 |
| 339 | Computational Complexity | 13 | 271 | 326 | 223 |
| 340 | Mycology | 4 | 270 | 1437 | 939 |
| 341 | Plasma chemistry | 7 | 269 | 218 | 154 |
| 341 | Plant cells | 2 | 269 | 1248 | 1072 |
| 343 | Photogrammetry | 27 | 267 | 137 | 97 |
| 343 | Leadership | 1 | 267 | 896 | 350 |
| 345 | city planning | 25 | 266 | 411 | 760 |
| 346 | Computer-Aided Design | 15 | 263 | 447 | 568 |
| 346 | Germany | 41 | 263 | 29 | 62 |
| 348 | Geometry | 37 | 262 | 176 | 257 |
| 348 | commerce | 7 | 262 | 988 | 778 |
| 350 | Environmental pollutants | 10 | 261 | 1285 | 1478 |
| 351 | internet | 11 | 260 | 756 | 866 |
| 352 | Internet of Things | 9 | 259 | 622 | 669 |
| 352 | extraterrestrial environment | 25 | 259 | 113 | 221 |
| 352 | astronomical phenomena | 25 | 259 | 100 | 196 |
| 355 | Optical Communications | 15 | 256 | 280 | 337 |
| 355 | Informatics | 8 | 256 | 489 | 490 |
| 357 | Geomorphology | 9 | 250 | 824 | 961 |
| 357 | Mechatronics | 6 | 250 | 636 | 477 |
| 359 | Comparative Physiology | 4 | 249 | 651 | 435 |
| 360 | Molecules | 20 | 248 | 537 | 728 |
| 360 | biological invasions | 3 | 248 | 613 | 328 |
| 362 | Meteorites | 3 | 247 | 874 | 752 |
| 363 | Fluid Mechanics | 11 | 245 | 827 | 815 |
| 364 | Bioinformatics | 8 | 244 | 1355 | 1384 |
| 365 | Hydrodynamics | 8 | 240 | 346 | 347 |
| 366 | Ferroelectricity | 20 | 239 | 336 | 409 |
| 367 | Environmental Toxicology | 8 | 238 | 1564 | 1804 |
| 368 | X-ray spectroscopy | 6 | 237 | 106 | 36 |
| 369 | environmental issues | 6 | 233 | 246 | 228 |
| 370 | Speech Perception | 8 | 230 | 210 | 268 |
| 370 | auditory perception | 8 | 230 | 237 | 299 |
| 370 | Photobiology | 4 | 230 | 1175 | 759 |
| 370 | Luminescence | 11 | 230 | 638 | 590 |
| 374 | Music | 5 | 229 | 636 | 301 |
| 375 | Building | 4 | 228 | 475 | 202 |
| 376 | voice | 3 | 225 | 493 | 201 |
| 377 | Evolution | 6 | 223 | 1323 | 1312 |
| 378 | Physical organic chemistry | 8 | 222 | 909 | 818 |
| 379 | Education | 13 | 221 | 1627 | 1613 |
| 380 | Information Science | 10 | 220 | 1384 | 1613 |
| 381 | Pharmaceutical Technology | 4 | 219 | 1390 | 991 |
| 381 | catalytic activity | 4 | 219 | 530 | 412 |
| 381 | Molecular structure | 6 | 219 | 1855 | 1509 |
| 384 | Ceramic materials | 7 | 218 | 916 | 753 |
| 385 | Organizational change | 7 | 217 | 401 | 358 |
| 386 | language | 6 | 216 | 552 | 516 |
| 387 | Hydraulic Engineering | 8 | 215 | 579 | 532 |
| 388 | Middle East | 10 | 214 | 426 | 278 |
| 389 | soil conservation | 8 | 213 | 371 | 437 |
| 389 | Africa | 10 | 213 | 740 | 530 |
| 391 | Economic History | 12 | 212 | 1684 | 1606 |
| 392 | Environmental Economics | 3 | 211 | 378 | 159 |
| 392 | Quantum Gravity | 13 | 211 | 1153 | 1296 |
| 392 | Multimedia Systems | 6 | 211 | 1360 | 916 |
| 392 | Decision making | 9 | 211 | 749 | 811 |
| 396 | Formal Languages | 6 | 210 | 109 | 28 |
| 397 | Agricultural Engineering | 5 | 208 | 319 | 250 |
| 397 | Plasma polymerization | 5 | 208 | 165 | 132 |
| 399 | sustainability | 10 | 206 | 367 | 730 |
| 400 | Discrete geometry | 20 | 203 | 37 | 75 |
| 401 | Social Networks | 4 | 199 | 224 | 174 |
| 401 | Sound | 11 | 199 | 547 | 555 |
| 401 | freshwater biology | 10 | 199 | 419 | 538 |
| 404 | Diet | 2 | 196 | 2526 | 1834 |
| 405 | Radiation | 8 | 195 | 1453 | 1225 |
| 406 | Biogeochemical cycles | 3 | 192 | 439 | 464 |
| 407 | Crystallization | 4 | 191 | 463 | 190 |
| 408 | Trace elements | 3 | 188 | 268 | 190 |
| 409 | particles | 8 | 187 | 522 | 545 |
| 409 | Chromatographic analysis | 4 | 187 | 1780 | 1079 |
| 411 | Measurement | 7 | 186 | 889 | 771 |
| 412 | Aging | 5 | 185 | 2252 | 1837 |
| 413 | Geodesy | 9 | 184 | 319 | 394 |
| 413 | Raman spectroscopy | 8 | 184 | 390 | 430 |
| 415 | Health Policy | 11 | 183 | 1141 | 1527 |
| 416 | Magnetic Resonance Spectroscopy | 10 | 180 | 649 | 692 |
| 416 | toxicity testing | 4 | 180 | 644 | 489 |
| 416 | Microwave devices | 7 | 180 | 326 | 285 |
| 416 | Speech | 7 | 180 | 589 | 642 |
| 416 | Exercise | 5 | 180 | 1016 | 745 |
| 421 | Genetic engineering | 5 | 179 | 1865 | 1833 |
| 422 | microwave communication systems | 6 | 178 | 277 | 235 |
| 423 | Land Use Planning | 5 | 176 | 254 | 294 |
| 423 | Economic Development | 5 | 176 | 1230 | 1274 |
| 425 | pigments | 1 | 174 | 1376 | 519 |
| 426 | Simulation Methods | 4 | 171 | 821 | 494 |
| 427 | Solar power plants | 2 | 170 | 274 | 183 |
| 427 | Photovoltaic Cells | 2 | 170 | 275 | 183 |
| 429 | Epidemiology | 33 | 169 | 1051 | 2755 |
| 429 | Topology | 9 | 169 | 137 | 93 |
| 429 | Soil dynamics | 6 | 169 | 334 | 330 |
| 432 | Chromatography | 2 | 168 | 2081 | 1058 |
| 433 | Neurochemistry | 3 | 166 | 2343 | 1940 |
| 434 | Quantum Chemistry | 2 | 165 | 180 | 69 |
| 435 | Algebra | 9 | 164 | 826 | 502 |
| 435 | Atomic spectroscopy | 13 | 164 | 491 | 686 |
| 435 | Memory | 9 | 164 | 1087 | 1449 |
| 438 | consumer behavior | 2 | 163 | 659 | 415 |
| 439 | Environmental Microbiology | 6 | 162 | 970 | 1389 |
| 439 | Differential Equations | 14 | 162 | 388 | 484 |
| 439 | Schizophrenia | 1 | 162 | 1536 | 920 |
| 439 | Qualitative Research | 1 | 162 | 870 | 288 |
| 443 | Pharmacology | 8 | 160 | 3724 | 4286 |
| 443 | Corporate governance | 4 | 160 | 463 | 402 |
| 445 | Cognitive neuroscience | 4 | 159 | 833 | 846 |
| 446 | Ultrasonics | 5 | 158 | 979 | 1070 |
| 447 | Embryology | 1 | 156 | 2221 | 1434 |
| 447 | Human Geography | 9 | 156 | 554 | 633 |
| 447 | Cytogenetics | 1 | 156 | 2317 | 1505 |
| 447 | Developmental Biology | 1 | 156 | 2995 | 1914 |
| 447 | Venture Capital | 2 | 156 | 369 | 399 |
| 447 | Entrepreneurship | 2 | 156 | 1149 | 838 |
| 453 | Diagnostic Imaging | 7 | 155 | 1396 | 1505 |
| 453 | Risk assessment | 7 | 155 | 313 | 308 |
| 453 | Synchrotron Radiation | 4 | 155 | 341 | 214 |
| 456 | Medical Anthropology | 2 | 154 | 1558 | 1214 |
| 457 | Geodynamics | 6 | 150 | 637 | 750 |
| 458 | Medical genetics | 3 | 148 | 2682 | 2737 |
| 458 | Electronic Packaging | 11 | 148 | 95 | 159 |
| 458 | weather | 3 | 148 | 554 | 412 |
| 461 | Game Theory | 9 | 144 | 260 | 308 |
| 462 | Information Systems | 6 | 143 | 965 | 1038 |
| 462 | solar power | 5 | 143 | 671 | 880 |
| 462 | Biomass | 3 | 143 | 720 | 696 |
| 465 | Wildlife conservation | 4 | 142 | 1002 | 1150 |
| 465 | soil pollution | 5 | 142 | 369 | 324 |
| 467 | Israel | 5 | 141 | 86 | 26 |
| 468 | Cognitive Psychology | 4 | 140 | 332 | 213 |
| 468 | Ecosystem management | 3 | 140 | 703 | 562 |
| 468 | nucleic acids | 3 | 140 | 1783 | 1803 |
| 468 | finance | 6 | 140 | 1692 | 1504 |
| 472 | Technology Assessment | 7 | 139 | 141 | 383 |
| 473 | Transportation Engineering | 4 | 138 | 266 | 242 |
| 473 | Labor Economics | 3 | 138 | 498 | 355 |
| 473 | economic policy | 17 | 138 | 958 | 1347 |
| 473 | Cost effectiveness | 6 | 138 | 32 | 48 |
| 477 | drug development | 1 | 137 | 1925 | 1447 |
| 478 | Magnetic Materials | 1 | 136 | 2227 | 1240 |
| 478 | data protection | 4 | 136 | 480 | 270 |
| 480 | Microstructure | 7 | 135 | 467 | 383 |
| 481 | Cytology | 3 | 133 | 4188 | 4116 |
| 481 | Chemical Ecology | 2 | 133 | 639 | 489 |
| 481 | Social Psychology | 6 | 133 | 1494 | 1680 |
| 481 | Alloys | 10 | 133 | 92 | 91 |
| 481 | pheromones | 2 | 133 | 581 | 452 |
| 486 | Marine Pollution | 2 | 132 | 1571 | 1179 |
| 487 | Cartography | 4 | 131 | 369 | 181 |
| 488 | Visual Perception | 10 | 130 | 911 | 1414 |
| 489 | Online social networks | 2 | 129 | 424 | 169 |
| 489 | Microscopy | 4 | 129 | 1271 | 939 |
| 489 | Attention | 9 | 129 | 1025 | 1486 |
| 489 | Perception | 9 | 129 | 1107 | 1571 |
| 493 | Catalysts | 5 | 128 | 507 | 495 |
| 494 | Learning | 4 | 126 | 1077 | 1054 |
| 494 | Capital asset pricing model | 1 | 126 | 131 | 29 |
| 496 | Electromagnetic compatibility | 12 | 125 | 164 | 269 |
| 496 | X-ray crystallography | 3 | 125 | 615 | 367 |
| 498 | Plant Morphology | 12 | 124 | 164 | 359 |
| 498 | supercritical fluids | 4 | 124 | 322 | 361 |
| 500 | Geography | 10 | 123 | 1097 | 1676 |
| 500 | Immunology | 5 | 123 | 2894 | 3379 |
| 500 | Social problems | 4 | 123 | 474 | 502 |
| 503 | hazard mitigation | 5 | 122 | 678 | 746 |
| 503 | Roads | 7 | 122 | 517 | 472 |
| 505 | Geographic information systems | 7 | 120 | 678 | 700 |
| 506 | Superconductors | 5 | 119 | 874 | 650 |
| 507 | Bioinorganic chemistry | 4 | 118 | 1227 | 1147 |
| 507 | Turbulence | 3 | 118 | 244 | 154 |
| 509 | water supply | 5 | 117 | 712 | 924 |
| 510 | Geomagnetism | 7 | 116 | 400 | 498 |
| 510 | nuclear magnetic resonance | 7 | 116 | 728 | 777 |
| 510 | Small Business | 3 | 116 | 714 | 866 |
| 513 | Animal ecology | 4 | 115 | 992 | 965 |
| 514 | Graph Theory | 14 | 114 | 260 | 337 |
| 514 | econometric models | 1 | 114 | 1083 | 503 |
| 516 | Toxins | 4 | 113 | 745 | 725 |
| 517 | Biofilms | 1 | 112 | 378 | 173 |
| 517 | Emotions | 4 | 112 | 506 | 646 |
| 519 | Intelligent Control Systems | 6 | 111 | 773 | 557 |
| 520 | Architecture | 4 | 110 | 448 | 263 |
| 521 | Zoology | 4 | 109 | 2266 | 1843 |
| 521 | venom | 3 | 109 | 781 | 666 |
| 523 | multimedia | 3 | 108 | 553 | 550 |
| 523 | Interactive multimedia | 3 | 108 | 610 | 584 |
| 523 | Europa | 4 | 108 | 407 | 451 |
| 526 | Thermochemistry | 8 | 107 | 270 | 390 |
| 526 | Developmental Disabilities | 1 | 107 | 1601 | 1033 |
| 528 | biological evolution | 1 | 106 | 3081 | 2214 |
| 529 | environmental indicators | 6 | 105 | 836 | 1316 |
| 529 | ozone | 4 | 105 | 75 | 65 |
| 529 | optical devices | 5 | 105 | 362 | 348 |
| 532 | Total Quality Management | 3 | 104 | 529 | 396 |
| 533 | Environmental Psychology | 4 | 103 | 259 | 465 |
| 533 | Substance Abuse | 2 | 103 | 1721 | 1240 |
| 533 | Detectors | 9 | 103 | 877 | 1302 |
| 536 | Urban Policy | 6 | 102 | 520 | 772 |
| 536 | Regional Economics | 4 | 102 | 385 | 371 |
| 538 | Health Information Management | 2 | 101 | 396 | 608 |
| 539 | Tribology | 6 | 100 | 915 | 1063 |
| 539 | biomimicry | 2 | 100 | 216 | 158 |
| 541 | Climatology | 4 | 99 | 1565 | 1711 |
| 542 | Mining Engineering | 5 | 98 | 429 | 474 |
| 542 | Physical Geography | 2 | 98 | 594 | 391 |
| 544 | Combinatorial optimization | 9 | 97 | 177 | 197 |
| 544 | Oral communication | 5 | 97 | 317 | 355 |
| 546 | Neurobiology | 2 | 96 | 1999 | 1954 |
| 546 | Cell Biology | 2 | 96 | 4565 | 4398 |
| 546 | Transport | 2 | 96 | 784 | 673 |
| 549 | Structural Engineering | 5 | 94 | 1331 | 1380 |
| 549 | Parallel Processing | 2 | 94 | 565 | 514 |
| 551 | Smart Materials | 5 | 93 | 726 | 830 |
| 552 | Humanities | 4 | 92 | 1549 | 954 |
| 552 | population policy | 1 | 92 | 300 | 139 |
| 554 | rivers | 2 | 91 | 367 | 286 |
| 555 | Hydrogeology | 15 | 89 | 190 | 660 |
| 555 | Molecular evolution | 2 | 89 | 1911 | 1770 |
| 557 | Cloud Computing | 5 | 87 | 202 | 361 |
| 558 | Culture | 3 | 86 | 1053 | 663 |
| 558 | Ultrasound | 4 | 86 | 675 | 776 |
| 560 | organizational effectiveness | 6 | 85 | 214 | 382 |
| 560 | construction | 2 | 85 | 252 | 218 |
| 562 | Scheduling | 4 | 84 | 84 | 115 |
| 562 | Production Scheduling | 4 | 84 | 84 | 115 |
| 562 | Freezing | 5 | 84 | 272 | 244 |
| 565 | Nanochemistry | 3 | 83 | 1337 | 1187 |
| 565 | Japan | 5 | 83 | 1684 | 1635 |
| 567 | Probability | 6 | 81 | 379 | 593 |
| 567 | Organizational Behavior | 1 | 81 | 849 | 671 |
| 567 | Reservoirs | 1 | 81 | 381 | 116 |
| 567 | lakes | 1 | 81 | 186 | 40 |
| 571 | Molecular cloning | 1 | 79 | 2468 | 1605 |
| 571 | Genetic recombination | 1 | 79 | 2415 | 1586 |
| 571 | Recombinant DNA | 1 | 79 | 2554 | 1678 |
| 571 | Radiation effects | 2 | 79 | 832 | 796 |
| 575 | Neurolinguistics | 1 | 78 | 720 | 531 |
| 575 | Quality Control | 4 | 78 | 1607 | 1829 |
| 575 | Speech Disorders | 1 | 78 | 1526 | 939 |
| 575 | brewing | 6 | 78 | 128 | 177 |
| 575 | Human Resources | 2 | 78 | 577 | 634 |
| 580 | Nondestructive testing | 4 | 77 | 634 | 640 |
| 581 | Child psychology | 3 | 76 | 1406 | 1643 |
| 582 | pollutants | 4 | 74 | 1797 | 2392 |
| 582 | Cell death | 2 | 74 | 1525 | 1744 |
| 582 | packaging | 12 | 74 | 21 | 125 |
| 585 | Computational Mathematics | 4 | 73 | 74 | 110 |
| 585 | Municipal Engineering | 2 | 73 | 456 | 377 |
| 585 | Gaia hypothesis | 2 | 73 | 3 | 4 |
| 585 | Administration | 3 | 73 | 69 | 58 |
| 589 | Surveying | 1 | 72 | 283 | 47 |
| 589 | Occupational Health | 3 | 72 | 1114 | 966 |
| 589 | Organometallic chemistry | 3 | 72 | 2083 | 1755 |
| 589 | Sonochemistry | 1 | 72 | 1104 | 1005 |
| 593 | Planetary Science | 5 | 71 | 386 | 449 |
| 593 | Superconductivity | 2 | 71 | 622 | 429 |
| 593 | land degradation | 3 | 71 | 480 | 638 |
| 593 | degradation | 3 | 71 | 480 | 638 |
| 597 | Structuralism | 2 | 70 | 203 | 252 |
| 597 | Environmental risk assessment | 5 | 70 | 273 | 466 |
| 597 | Ultrasonic Imaging | 3 | 70 | 551 | 584 |
| 597 | Social behavior | 2 | 70 | 1393 | 1275 |
| 601 | Optoelectronic devices | 4 | 69 | 890 | 686 |
| 602 | Biodegradation | 2 | 68 | 996 | 1009 |
| 602 | Gene expression regulation | 2 | 68 | 1298 | 1259 |
| 602 | Genetic regulation | 2 | 68 | 1479 | 1581 |
| 602 | Water Microbiology | 2 | 68 | 643 | 597 |
| 602 | protein | 2 | 68 | 1542 | 1368 |
| 602 | Fouling | 2 | 68 | 328 | 372 |
| 608 | Restoration Ecology | 3 | 67 | 448 | 549 |
| 608 | economic forecasting | 3 | 67 | 324 | 403 |
| 608 | Industrial Ecology | 2 | 67 | 236 | 318 |
| 608 | Nonlinear functional analysis | 4 | 67 | 942 | 968 |
| 608 | Matroids | 5 | 67 | 171 | 223 |
| 608 | health services | 3 | 67 | 1130 | 1176 |
| 608 | Agriculture | 12 | 67 | 1003 | 2354 |
| 615 | Civil Engineering | 8 | 66 | 953 | 1124 |
| 615 | Human Rights | 1 | 66 | 1012 | 468 |
| 615 | adolescence | 1 | 66 | 1507 | 1009 |
| 615 | Adolescent | 1 | 66 | 3417 | 2111 |
| 619 | Horticulture | 7 | 64 | 469 | 775 |
| 619 | Sedimentology | 1 | 64 | 1068 | 751 |
| 619 | nuclear magnetic resonance spectroscopy | 3 | 64 | 757 | 681 |
| 619 | Porous materials | 2 | 64 | 968 | 705 |
| 619 | NMR | 3 | 64 | 535 | 440 |
| 619 | magnetic resonance | 3 | 64 | 552 | 467 |
| 619 | Vaccines | 1 | 64 | 3101 | 2301 |
| 626 | Research Design | 5 | 63 | 933 | 1493 |
| 627 | Rock deformation | 1 | 62 | 381 | 278 |
| 628 | Medical Technology | 3 | 61 | 1842 | 2108 |
| 628 | Econometrics | 4 | 61 | 1227 | 1258 |
| 628 | Autonomous robots | 3 | 61 | 174 | 303 |
| 631 | Social Choice Theory | 5 | 60 | 147 | 187 |
| 631 | Dynamics | 3 | 60 | 1616 | 1366 |
| 631 | Welfare Economics | 5 | 60 | 314 | 487 |
| 631 | Paleobotany | 2 | 60 | 206 | 200 |
| 631 | Vegetation dynamics | 2 | 60 | 188 | 193 |
| 636 | Health equity | 4 | 59 | 36 | 48 |
| 636 | taxation | 4 | 59 | 172 | 270 |
| 636 | urban health | 4 | 59 | 218 | 387 |
| 636 | Child Development | 4 | 59 | 1658 | 2306 |
| 636 | Religion and Sociology | 1 | 59 | 433 | 127 |
| 636 | X-rays | 2 | 59 | 861 | 602 |
| 642 | Hematology | 3 | 58 | 2726 | 3067 |
| 642 | Artificial Organs | 1 | 58 | 1092 | 674 |
| 642 | telemarketing | 6 | 58 | 35 | 159 |
| 642 | Brain damage | 2 | 58 | 545 | 586 |
| 646 | Medical Oncology | 2 | 57 | 2314 | 2488 |
| 646 | Liposomes | 4 | 57 | 466 | 718 |
| 646 | Lipid bilayers | 4 | 57 | 396 | 574 |
| 649 | Metabolism | 1 | 56 | 4109 | 3795 |
| 649 | Multiphase Flow | 4 | 56 | 347 | 542 |
| 649 | Food additives | 4 | 56 | 1076 | 1703 |
| 649 | Consumer Protection | 2 | 56 | 241 | 252 |
| 649 | Employee selection | 2 | 56 | 164 | 183 |
| 649 | consumers | 2 | 56 | 461 | 457 |
| 649 | carcinogens | 2 | 56 | 1296 | 1464 |
| 649 | Customer Relations | 2 | 56 | 96 | 98 |
| 649 | hydrocolloids | 4 | 56 | 535 | 1120 |
| 649 | Evolution equations | 4 | 56 | 81 | 72 |
| 649 | Bones | 1 | 56 | 1310 | 1256 |
| 660 | Nuclear Engineering | 5 | 55 | 1432 | 1530 |
| 660 | Health Services Administration | 3 | 55 | 1154 | 1402 |
| 660 | clay | 1 | 55 | 1318 | 1207 |
| 660 | Algal blooms | 5 | 55 | 188 | 494 |
| 660 | Cyanobacteria | 5 | 55 | 188 | 494 |
| 660 | microalgae | 5 | 55 | 188 | 494 |
| 666 | Nanophotonics | 2 | 54 | 280 | 372 |
| 666 | Cognitive Radio Networks | 3 | 54 | 221 | 249 |
| 666 | Semantic web | 2 | 54 | 140 | 170 |
| 666 | natural gas | 1 | 54 | 770 | 601 |
| 670 | Number Theory | 2 | 53 | 901 | 467 |
| 670 | Chemical analysis | 1 | 53 | 1901 | 1547 |
| 672 | Economic Geography | 4 | 52 | 275 | 449 |
| 672 | Systems Biology | 2 | 52 | 2107 | 2208 |
| 672 | motivation | 1 | 52 | 606 | 433 |
| 672 | Industrial Policy | 2 | 52 | 619 | 607 |
| 672 | Emotion | 1 | 52 | 371 | 336 |
| 672 | irrigation | 1 | 52 | 637 | 370 |
| 672 | Eigenvalues | 7 | 52 | 112 | 69 |
| 679 | Logistics | 2 | 51 | 687 | 805 |
| 679 | Neuroimaging | 2 | 51 | 397 | 344 |
| 679 | Child | 1 | 51 | 3822 | 2743 |
| 679 | Child welfare | 1 | 51 | 1908 | 1244 |
| 679 | Environmentalism | 2 | 51 | 193 | 274 |
| 679 | optical instruments | 2 | 51 | 516 | 473 |
| 679 | optical phenomena | 2 | 51 | 178 | 169 |
| 679 | child behavior | 1 | 51 | 622 | 535 |
| 679 | children | 1 | 51 | 850 | 592 |
| 688 | Geriatrics | 6 | 50 | 2220 | 3344 |
| 688 | Radio wave propagation | 5 | 50 | 579 | 777 |
| 688 | Entomology | 4 | 50 | 2034 | 2166 |
| 691 | Virology | 1 | 49 | 4452 | 4234 |
| 691 | Consciousness | 2 | 49 | 574 | 557 |
| 691 | Fossils | 2 | 49 | 45 | 13 |
| 694 | atmospheric models | 2 | 48 | 762 | 947 |
| 695 | Sustainable Architecture | 1 | 47 | 373 | 119 |
| 695 | Outdoor recreation | 1 | 47 | 185 | 125 |
| 695 | ecotourism | 1 | 47 | 452 | 395 |
| 698 | locomotion | 1 | 46 | 1078 | 887 |
| 698 | posture | 1 | 46 | 1078 | 887 |
| 698 | Scanning electron microscopy | 4 | 46 | 83 | 187 |
| 698 | fusion reactors | 3 | 46 | 507 | 434 |
| 698 | gait | 1 | 46 | 1078 | 887 |
| 698 | walking | 1 | 46 | 1078 | 887 |
| 704 | Agricultural Ecology | 7 | 45 | 654 | 1789 |
| 704 | Population Genetics | 2 | 45 | 1410 | 1803 |
| 704 | Forecasting | 2 | 45 | 734 | 713 |
| 704 | United Kingdom | 6 | 45 | 1125 | 2138 |
| 704 | Flow cytometry | 1 | 45 | 773 | 664 |
| 709 | Software Engineering | 5 | 44 | 810 | 1201 |
| 709 | Analytical Biochemistry | 3 | 44 | 1930 | 2352 |
| 709 | health services accessibility | 3 | 44 | 1032 | 1256 |
| 709 | epilepsy | 1 | 44 | 1587 | 1284 |
| 709 | free radicals | 2 | 44 | 1666 | 2238 |
| 709 | psychotherapy | 1 | 44 | 2017 | 1608 |
| 715 | Telecommunications | 2 | 43 | 1103 | 897 |
| 715 | Freshwater invertebrates | 1 | 43 | 388 | 393 |
| 715 | Moon | 3 | 43 | 168 | 158 |
| 718 | preventive medicine | 3 | 42 | 1236 | 1877 |
| 718 | Biomechanics | 2 | 42 | 1660 | 1848 |
| 718 | Globalization | 3 | 42 | 554 | 828 |
| 721 | Carcinogenesis | 1 | 41 | 1712 | 1706 |
| 721 | Green Technology | 1 | 41 | 880 | 637 |
| 721 | Solutions | 3 | 41 | 393 | 446 |
| 721 | mutagens | 1 | 41 | 1395 | 1484 |
| 721 | drugs | 2 | 41 | 2759 | 3007 |
| 721 | biological monitoring | 1 | 41 | 1026 | 923 |
| 721 | Extreme environments | 1 | 41 | 471 | 505 |
| 728 | Wind power | 3 | 40 | 324 | 426 |
| 728 | industrial relations | 3 | 40 | 816 | 908 |
| 728 | Quality of life | 3 | 40 | 1566 | 2390 |
| 731 | Criminology | 1 | 39 | 1343 | 943 |
| 731 | income distribution | 1 | 39 | 281 | 269 |
| 731 | microwave antennas | 3 | 39 | 387 | 427 |
| 731 | poverty | 1 | 39 | 850 | 681 |
| 731 | radiative transfer | 2 | 39 | 731 | 674 |
| 731 | Group decision making | 5 | 39 | 320 | 633 |
| 731 | crime | 1 | 39 | 1008 | 674 |
| 738 | corporate culture | 1 | 38 | 372 | 343 |
| 738 | planning | 4 | 38 | 609 | 965 |
| 740 | Immunotherapy | 1 | 37 | 3172 | 3053 |
| 740 | soil management | 2 | 37 | 704 | 991 |
| 740 | psychophysics | 2 | 37 | 427 | 419 |
| 740 | Enzyme | 2 | 37 | 678 | 1015 |
| 740 | cell physiology | 1 | 37 | 2335 | 2544 |
| 740 | Ore deposits | 1 | 37 | 819 | 731 |
| 740 | Immune system | 1 | 37 | 1752 | 1833 |
| 740 | Immunity | 1 | 37 | 2912 | 3184 |
| 740 | Textile industry | 2 | 37 | 686 | 549 |
| 749 | Biopharmaceutics | 1 | 36 | 1893 | 1864 |
| 749 | Serology | 2 | 36 | 651 | 823 |
| 749 | Nanobiotechnology | 2 | 36 | 600 | 1100 |
| 749 | Microfabrication | 1 | 36 | 771 | 593 |
| 749 | Biological Systems | 2 | 36 | 752 | 987 |
| 749 | Industry | 2 | 36 | 263 | 650 |
| 749 | Plants | 1 | 36 | 2967 | 2749 |
| 756 | Structural optimization | 1 | 35 | 636 | 542 |
| 756 | Global Health | 2 | 35 | 1529 | 1551 |
| 756 | Greenhouse gases | 2 | 35 | 420 | 690 |
| 756 | Approximation Theory | 5 | 35 | 286 | 414 |
| 756 | Heat | 15 | 35 | 9 | 43 |
| 756 | gene mapping | 1 | 35 | 3235 | 3378 |
| 756 | DNA polymerases | 1 | 35 | 804 | 1195 |
| 763 | Atmospheric Chemistry | 2 | 34 | 1062 | 1443 |
| 763 | Urban Geography | 1 | 34 | 391 | 336 |
| 763 | Atmospheric Physics | 2 | 34 | 1838 | 2152 |
| 763 | Quantum Optics | 5 | 34 | 699 | 1083 |
| 763 | Stem cells | 1 | 34 | 2352 | 2378 |
| 763 | Hydrocarbons | 1 | 34 | 237 | 171 |
| 763 | carbon monoxide | 2 | 34 | 471 | 825 |
| 763 | international cooperation | 3 | 34 | 600 | 1011 |
| 771 | Nanoelectronics | 6 | 33 | 640 | 1045 |
| 771 | Microeconomics | 2 | 33 | 422 | 437 |
| 771 | Labor Unions | 1 | 33 | 503 | 251 |
| 771 | Granular materials | 4 | 33 | 499 | 1067 |
| 771 | Semiconductor industry | 7 | 33 | 413 | 853 |
| 771 | impact | 2 | 33 | 438 | 642 |
| 777 | Food Preservation | 4 | 32 | 677 | 994 |
| 777 | Oxidative stress | 1 | 32 | 1548 | 1844 |
| 777 | Mineral resources | 2 | 32 | 786 | 1129 |
| 777 | forest policy | 2 | 32 | 472 | 625 |
| 777 | Oxidation-reduction | 1 | 32 | 1356 | 1645 |
| 782 | Long-Term Care | 1 | 31 | 989 | 1051 |
| 782 | Patient education | 1 | 31 | 1087 | 1155 |
| 782 | Long-term care facilities | 1 | 31 | 981 | 1048 |
| 782 | Eastern Europe | 4 | 31 | 751 | 879 |
| 782 | counseling | 1 | 31 | 2171 | 1877 |
| 782 | urban forestry | 1 | 31 | 550 | 473 |
| 782 | baking | 3 | 31 | 217 | 395 |
| 782 | Drug discovery | 1 | 31 | 592 | 575 |
| 790 | Rural Development | 6 | 30 | 300 | 842 |
| 790 | Strategic planning | 2 | 30 | 925 | 1152 |
| 790 | Cardiovascular system | 2 | 30 | 1865 | 2677 |
| 793 | International Relations | 1 | 29 | 1641 | 1069 |
| 793 | Randomized Controlled Trials | 2 | 29 | 1516 | 1702 |
| 793 | Molecular ecology | 1 | 29 | 1652 | 2049 |
| 793 | phase diagrams | 3 | 29 | 175 | 217 |
| 797 | Behavioral Genetics | 1 | 28 | 408 | 490 |
| 797 | Socioeconomic Factors | 2 | 28 | 1004 | 1525 |
| 797 | Volcanoes | 1 | 28 | 456 | 495 |
| 797 | cryosphere | 3 | 28 | 362 | 649 |
| 797 | race relations | 5 | 28 | 416 | 780 |
| 802 | Anthropology | 1 | 27 | 2298 | 1836 |
| 802 | Naval Architecture | 2 | 27 | 462 | 511 |
| 802 | Surface-Active Agents | 1 | 27 | 1875 | 2126 |
| 802 | Health insurance | 1 | 27 | 878 | 784 |
| 802 | East Africa | 1 | 27 | 94 | 75 |
| 802 | environmental control | 2 | 27 | 320 | 498 |
| 802 | analysis | 1 | 27 | 497 | 511 |
| 802 | Surface properties | 1 | 27 | 1960 | 2214 |
| 802 | brain mapping | 1 | 27 | 1016 | 1235 |
| 811 | Queuing Theory | 1 | 26 | 292 | 243 |
| 811 | electric vehicles | 2 | 26 | 423 | 586 |
| 811 | Urbanization | 2 | 26 | 232 | 375 |
| 811 | Yeast | 1 | 26 | 751 | 821 |
| 815 | Linguistics | 3 | 25 | 1223 | 1496 |
| 815 | Distributed Databases | 4 | 25 | 125 | 295 |
| 815 | Smoking | 1 | 25 | 1256 | 1408 |
| 815 | food contamination | 3 | 25 | 1121 | 1723 |
| 815 | Obesity | 1 | 25 | 3099 | 3469 |
| 815 | Scandinavia | 1 | 25 | 1113 | 1037 |
| 815 | drug addiction | 1 | 25 | 1766 | 1917 |
| 815 | alcoholism | 1 | 25 | 2270 | 2354 |
| 823 | Political Science | 4 | 24 | 1433 | 1721 |
| 823 | Industrial Organization | 2 | 24 | 373 | 560 |
| 823 | Demography | 1 | 24 | 1145 | 1176 |
| 823 | Plant Biotechnology | 1 | 24 | 1379 | 1402 |
| 823 | diffusion | 3 | 24 | 311 | 181 |
| 823 | Computational neuroscience | 1 | 24 | 63 | 59 |
| 823 | Urban Anthropology | 3 | 24 | 157 | 323 |
| 823 | ethnic groups | 3 | 24 | 315 | 648 |
| 823 | Finite Element Method | 1 | 24 | 572 | 590 |
| 823 | Documentation | 1 | 24 | 546 | 477 |
| 823 | World Wide Web | 1 | 24 | 862 | 623 |
| 834 | Functional equations | 4 | 23 | 137 | 206 |
| 834 | Wireless Communication | 5 | 23 | 323 | 726 |
| 834 | Serbia | 1 | 23 | 291 | 104 |
| 837 | Urban Economics | 1 | 22 | 608 | 697 |
| 837 | Ethnic relations | 4 | 22 | 477 | 783 |
| 837 | Mixed methods research | 1 | 22 | 142 | 212 |
| 837 | Watershed management | 1 | 22 | 529 | 430 |
| 837 | environmental exposure | 2 | 22 | 2457 | 3480 |
| 837 | Methodology | 1 | 22 | 939 | 804 |
| 837 | Soviet Union | 1 | 22 | 1408 | 841 |
| 837 | Cement | 1 | 22 | 946 | 1139 |
| 837 | mortality | 1 | 22 | 163 | 136 |
| 837 | death | 1 | 22 | 634 | 542 |
| 837 | population geography | 2 | 22 | 486 | 685 |
| 837 | Plasma devices | 1 | 22 | 551 | 575 |
| 837 | Bereavement | 1 | 22 | 411 | 333 |
| 850 | Seismology | 2 | 21 | 636 | 810 |
| 850 | Lipid metabolism | 1 | 21 | 782 | 1014 |
| 850 | Taste | 1 | 21 | 570 | 635 |
| 850 | Organic farming | 1 | 21 | 104 | 102 |
| 850 | flavor | 1 | 21 | 376 | 475 |
| 850 | smell | 1 | 21 | 570 | 635 |
| 850 | Earthquakes | 2 | 21 | 489 | 609 |
| 850 | Lipid | 1 | 21 | 784 | 1016 |
| 850 | tillage | 1 | 21 | 755 | 994 |
| 859 | Philosophy | 3 | 20 | 1359 | 1206 |
| 859 | Human genetics | 2 | 20 | 2604 | 4202 |
| 859 | Genomics | 2 | 20 | 3951 | 5344 |
| 859 | Geothermal Energy | 2 | 20 | 375 | 600 |
| 859 | Symbolic interactionism | 2 | 20 | 142 | 227 |
| 859 | Calorimetry | 2 | 20 | 1537 | 1909 |
| 859 | social aspects | 2 | 20 | 93 | 133 |
| 859 | Thermal analysis | 2 | 20 | 1537 | 1909 |
| 867 | ethnicity | 2 | 19 | 867 | 994 |
| 867 | Ethnic Conflict | 2 | 19 | 324 | 546 |
| 867 | Medical Ethics | 3 | 19 | 1171 | 1780 |
| 867 | Health promotion | 2 | 19 | 1491 | 2120 |
| 867 | machinery | 3 | 19 | 819 | 1309 |
| 867 | forced migration | 2 | 19 | 324 | 546 |
| 867 | primary prevention | 2 | 19 | 528 | 1014 |
| 867 | chronic disease | 2 | 19 | 413 | 730 |
| 875 | Computational Chemistry | 1 | 18 | 1115 | 1215 |
| 875 | Health Services Research | 5 | 18 | 1394 | 3201 |
| 875 | Virtual reality | 5 | 18 | 275 | 811 |
| 875 | Multivariate Analysis | 2 | 18 | 624 | 842 |
| 875 | Computational Intelligence | 2 | 18 | 929 | 1190 |
| 875 | health and race | 1 | 18 | 398 | 504 |
| 875 | Bibliometrics | 1 | 18 | 317 | 413 |
| 875 | Primary health care | 4 | 18 | 1629 | 3275 |
| 875 | Wetland ecology | 1 | 18 | 914 | 984 |
| 875 | plasticity | 1 | 18 | 571 | 823 |
| 875 | elasticity | 3 | 18 | 217 | 384 |
| 875 | peptides | 2 | 18 | 1081 | 1545 |
| 875 | wetland management | 1 | 18 | 406 | 488 |
| 888 | Geotechnical Engineering | 2 | 17 | 644 | 914 |
| 888 | Operator theory | 3 | 17 | 389 | 489 |
| 888 | ecological risk assessment | 1 | 17 | 599 | 725 |
| 888 | Entropy | 5 | 17 | 859 | 1835 |
| 888 | food handling | 2 | 17 | 1133 | 2035 |
| 888 | reasoning | 1 | 17 | 762 | 748 |
| 888 | Chemical structure | 1 | 17 | 999 | 845 |
| 888 | Health Risk Assessment | 1 | 17 | 984 | 1057 |
| 888 | Fuzzy systems | 2 | 17 | 1994 | 2323 |
| 897 | Phytochemistry | 1 | 16 | 655 | 818 |
| 897 | Architectural Design | 1 | 16 | 880 | 769 |
| 897 | Industrial Safety | 1 | 16 | 2072 | 2160 |
| 897 | Phytoremediation | 1 | 16 | 655 | 818 |
| 897 | Law and Economics | 1 | 16 | 505 | 463 |
| 897 | environmental remediation | 1 | 16 | 793 | 953 |
| 897 | Radiobiology | 1 | 16 | 2241 | 2570 |
| 897 | Bioreactors | 1 | 16 | 655 | 818 |
| 897 | Structural Equation Modeling | 1 | 16 | 208 | 251 |
| 897 | Mycotoxins | 2 | 16 | 211 | 380 |
| 897 | space environment | 3 | 16 | 222 | 433 |
| 897 | design | 1 | 16 | 459 | 416 |
| 897 | ecosystem | 1 | 16 | 2088 | 2660 |
| 897 | economic analysis | 1 | 16 | 501 | 583 |
| 897 | Capitalism | 1 | 16 | 392 | 412 |
| 897 | Australia | 1 | 16 | 3333 | 3272 |
| 897 | Radio frequency | 1 | 16 | 840 | 1029 |
| 914 | Proteomics | 1 | 15 | 1877 | 2406 |
| 914 | Social Movements | 4 | 15 | 52 | 276 |
| 914 | Agricultural Biotechnology | 1 | 15 | 591 | 436 |
| 914 | Discrete Mathematics | 3 | 15 | 344 | 393 |
| 914 | air quality management | 1 | 15 | 1052 | 1415 |
| 914 | Fracture mechanics | 2 | 15 | 1761 | 2367 |
| 914 | Plant genetic engineering | 1 | 15 | 1511 | 1826 |
| 914 | civil society | 4 | 15 | 19 | 118 |
| 914 | Social participation | 4 | 15 | 3 | 9 |
| 914 | Plant tissue culture | 1 | 15 | 1208 | 1468 |
| 914 | graph | 3 | 15 | 344 | 393 |
| 914 | Biometrics | 3 | 15 | 1085 | 1754 |
| 914 | indoor air pollution | 1 | 15 | 761 | 1029 |
| 914 | Ventilation | 1 | 15 | 1019 | 1217 |
| 914 | Sick building syndrome | 1 | 15 | 761 | 1029 |
| 914 | synthesis | 2 | 15 | 1333 | 1661 |
| 930 | Mental Disorders | 1 | 14 | 4378 | 4969 |
| 930 | Computational Fluid Dynamics | 2 | 14 | 818 | 1254 |
| 930 | Latin America | 1 | 14 | 1561 | 1272 |
| 930 | Information society | 1 | 14 | 338 | 437 |
| 930 | construction industry | 3 | 14 | 135 | 323 |
| 930 | Therapeutics | 2 | 14 | 2249 | 3660 |
| 930 | Antarctica | 1 | 14 | 871 | 941 |
| 930 | Laser Spectroscopy | 4 | 14 | 746 | 1361 |
| 930 | Testing | 1 | 14 | 199 | 203 |
| 930 | world | 2 | 14 | 921 | 1792 |
| 930 | sports injuries | 1 | 14 | 1038 | 1147 |
| 941 | Anatomy | 1 | 13 | 2854 | 3277 |
| 941 | Public Spaces | 2 | 13 | 90 | 176 |
| 941 | Wireless Sensor Networks | 3 | 13 | 19 | 67 |
| 941 | Social policy | 8 | 13 | 520 | 1762 |
| 941 | personal space | 2 | 13 | 84 | 172 |
| 941 | Sun | 3 | 13 | 388 | 643 |
| 947 | Petroleum Engineering | 1 | 12 | 1337 | 1554 |
| 947 | Orthopedics | 2 | 12 | 1965 | 2849 |
| 947 | Polymer Engineering | 1 | 12 | 279 | 328 |
| 947 | Photography | 7 | 12 | 1206 | 1567 |
| 947 | Kinetics | 2 | 12 | 643 | 1105 |
| 947 | Sports Medicine | 1 | 12 | 3609 | 3659 |
| 947 | Orthopedic Surgery | 2 | 12 | 1070 | 1696 |
| 947 | Terahertz Technology | 2 | 12 | 209 | 435 |
| 947 | Integrated Circuits | 2 | 12 | 1141 | 1250 |
| 947 | Lightweight Materials | 1 | 12 | 72 | 98 |
| 947 | Chemical kinetics | 2 | 12 | 984 | 1276 |
| 947 | Freeze-Drying | 1 | 12 | 767 | 960 |
| 947 | Hypothermia | 1 | 12 | 767 | 960 |
| 947 | Freeze Drying | 1 | 12 | 767 | 960 |
| 947 | Molecular Spectroscopy | 1 | 12 | 2662 | 3138 |
| 947 | older people | 2 | 12 | 2019 | 2552 |
| 947 | color | 2 | 12 | 350 | 603 |
| 947 | Insects | 2 | 12 | 1697 | 2327 |
| 965 | History | 5 | 11 | 810 | 806 |
| 965 | History of Medicine | 4 | 11 | 333 | 451 |
| 965 | Transnational corporations | 1 | 11 | 775 | 1001 |
| 965 | Sensor Networks | 1 | 11 | 509 | 575 |
| 965 | cooperation | 1 | 11 | 258 | 262 |
| 965 | Coding Theory | 1 | 11 | 629 | 580 |
| 965 | International Finance | 1 | 11 | 2312 | 2607 |
| 965 | body temperature | 1 | 11 | 1032 | 1294 |
| 965 | High performance computing | 1 | 11 | 201 | 160 |
| 965 | Development | 1 | 11 | 1373 | 1832 |
| 965 | disaster relief | 1 | 11 | 476 | 701 |
| 965 | Economic Assistance | 1 | 11 | 1222 | 1659 |
| 965 | Quantum theory | 2 | 11 | 1134 | 1561 |
| 978 | Early Childhood Education | 1 | 10 | 931 | 1070 |
| 978 | Organizational learning | 2 | 10 | 651 | 1111 |
| 978 | infrared radiation | 1 | 10 | 1137 | 1301 |
| 978 | Adaptive control systems | 1 | 10 | 1027 | 1222 |
| 978 | mental processes | 1 | 10 | 650 | 759 |
| 978 | biological agents | 1 | 10 | 1207 | 943 |
| 978 | evaluation | 3 | 10 | 146 | 463 |
| 985 | Marine Geology | 1 | 9 | 1029 | 1301 |
| 985 | Petroleum Geology | 1 | 9 | 867 | 1135 |
| 985 | Risk Management | 1 | 9 | 1399 | 1794 |
| 985 | Bioethics | 1 | 9 | 1571 | 1733 |
| 985 | Ecohydrology | 1 | 9 | 731 | 962 |
| 985 | genocide | 2 | 9 | 107 | 117 |
| 985 | feeding behavior | 2 | 9 | 895 | 1783 |
| 985 | Holocaust | 2 | 9 | 120 | 76 |
| 985 | Appetite | 2 | 9 | 779 | 1614 |
| 994 | Political Geography | 1 | 8 | 493 | 691 |
| 994 | Psychometrics | 1 | 8 | 663 | 863 |
| 994 | technology transfer | 1 | 8 | 550 | 803 |
| 994 | Geopolitics | 1 | 8 | 500 | 641 |
| 994 | Social Issues | 1 | 8 | 468 | 697 |
| 994 | Public Choice | 1 | 8 | 590 | 752 |
| 994 | Emulsions | 1 | 8 | 760 | 1003 |