| 1 | Chemistry | 811 | 34.7K | 488 | 520 |
| 2 | Physics | 1,347 | 32.7K | 317 | 630 |
| 3 | Analytical Chemistry | 506 | 17.0K | 96 | 120 |
| 4 | Nuclear Physics | 823 | 14.5K | 278 | 427 |
| 5 | Statistical physics | 612 | 12.6K | 80 | 172 |
| 6 | Nanotechnology | 301 | 12.0K | 361 | 426 |
| 7 | Pollution | 351 | 11.5K | 234 | 426 |
| 8 | Molecular Biology | 461 | 11.4K | 509 | 746 |
| 8 | Materials | 279 | 11.4K | 590 | 551 |
| 10 | Optics | 883 | 11.3K | 89 | 173 |
| 11 | Biochemistry | 407 | 10.9K | 787 | 886 |
| 12 | actuators | 218 | 10.0K | 46 | 38 |
| 12 | transducers | 218 | 10.0K | 46 | 38 |
| 14 | Biology | 209 | 9.9K | 910 | 1032 |
| 15 | Science | 244 | 9.7K | 889 | 1095 |
| 16 | Biocompatible Materials | 168 | 8.1K | 376 | 411 |
| 17 | Environmental Health | 251 | 7.8K | 285 | 450 |
| 18 | Catalysis | 242 | 7.6K | 322 | 434 |
| 19 | environmental pollution | 217 | 7.6K | 246 | 327 |
| 20 | Ecology | 219 | 7.3K | 590 | 781 |
| 21 | Chemical Engineering | 224 | 6.9K | 429 | 524 |
| 22 | Mathematics | 530 | 6.8K | 309 | 347 |
| 23 | Materials Science | 165 | 6.7K | 496 | 494 |
| 24 | Biotechnology | 197 | 6.4K | 510 | 694 |
| 25 | Spectrum analysis | 353 | 6.3K | 274 | 564 |
| 26 | Environmental monitoring | 152 | 6.3K | 207 | 254 |
| 27 | Toxicology | 187 | 5.8K | 356 | 422 |
| 28 | Biochemical Engineering | 177 | 5.5K | 215 | 452 |
| 29 | Information Science | 109 | 5.1K | 148 | 117 |
| 30 | Molecular Spectroscopy | 260 | 5.0K | 9 | 21 |
| 31 | Bioengineering | 127 | 4.9K | 434 | 548 |
| 32 | Medicine | 203 | 4.9K | 1050 | 1285 |
| 33 | nanoscience | 123 | 4.7K | 274 | 381 |
| 34 | Research | 175 | 4.7K | 1001 | 1031 |
| 35 | Environment | 119 | 4.7K | 625 | 844 |
| 36 | Biomedical Engineering | 178 | 4.6K | 435 | 537 |
| 37 | environmental protection | 140 | 4.4K | 186 | 269 |
| 38 | Photonics | 222 | 4.4K | 93 | 219 |
| 39 | Optical materials | 144 | 4.3K | 194 | 307 |
| 40 | Nanostructured Materials | 123 | 3.8K | 368 | 437 |
| 41 | Environmental Toxicology | 120 | 3.6K | 94 | 184 |
| 42 | Environmental Engineering | 100 | 3.6K | 380 | 474 |
| 43 | Environmental pollutants | 117 | 3.5K | 85 | 127 |
| 44 | Surface Chemistry | 118 | 3.3K | 524 | 601 |
| 45 | Electrochemistry | 124 | 3.2K | 614 | 547 |
| 46 | Condensed Matter | 162 | 3.1K | 517 | 638 |
| 47 | Solid State Physics | 147 | 3.1K | 604 | 659 |
| 48 | Microbiology | 137 | 3.0K | 832 | 1188 |
| 49 | mathematical analysis | 218 | 3.0K | 69 | 105 |
| 50 | Colloids | 99 | 3.0K | 609 | 686 |
| 51 | Pharmacology | 109 | 2.9K | 806 | 860 |
| 52 | Agricultural Chemistry | 64 | 2.8K | 303 | 252 |
| 53 | pollutants | 92 | 2.8K | 87 | 153 |
| 54 | Nanostructures | 68 | 2.7K | 151 | 248 |
| 55 | Green Chemistry | 57 | 2.6K | 246 | 287 |
| 56 | environmental exposure | 88 | 2.6K | 92 | 123 |
| 57 | Biophysics | 114 | 2.5K | 891 | 1049 |
| 58 | Biosensors | 45 | 2.5K | 159 | 169 |
| 59 | Fuzzy systems | 89 | 2.4K | 52 | 28 |
| 60 | Pharmacognosy | 79 | 2.4K | 148 | 215 |
| 61 | Medicinal plants | 80 | 2.3K | 65 | 135 |
| 62 | pigments | 76 | 2.3K | 30 | 18 |
| 63 | Bioelectronics | 41 | 2.3K | 133 | 159 |
| 64 | Systems Engineering | 80 | 2.2K | 168 | 189 |
| 65 | Neural circuitry | 52 | 2.1K | 228 | 221 |
| 66 | Insects | 60 | 2.1K | 130 | 113 |
| 67 | China | 132 | 2.0K | 188 | 244 |
| 68 | Cytology | 69 | 2.0K | 793 | 1010 |
| 69 | Water | 31 | 2.0K | 680 | 586 |
| 70 | Environmental Policy | 58 | 2.0K | 530 | 655 |
| 71 | Bioorganic chemistry | 42 | 2.0K | 678 | 495 |
| 72 | Artificial Intelligence | 94 | 2.0K | 454 | 682 |
| 73 | System analysis | 67 | 1.9K | 282 | 266 |
| 74 | Chemical analysis | 58 | 1.9K | 51 | 54 |
| 75 | lasers | 151 | 1.9K | 123 | 227 |
| 76 | reasoning | 27 | 1.9K | 22 | 6 |
| 77 | Organic Chemistry | 59 | 1.9K | 718 | 622 |
| 78 | Environmental Management | 67 | 1.9K | 370 | 610 |
| 78 | Bioinorganic chemistry | 52 | 1.9K | 209 | 154 |
| 80 | Cell Biology | 59 | 1.8K | 797 | 1058 |
| 81 | Water pollution | 24 | 1.7K | 909 | 630 |
| 82 | Food | 62 | 1.7K | 471 | 600 |
| 83 | Magnetic Materials | 67 | 1.6K | 148 | 204 |
| 84 | Natural history | 10 | 1.6K | 1617 | 1486 |
| 85 | Physical Chemistry | 28 | 1.6K | 680 | 493 |
| 86 | Sustainable Engineering | 37 | 1.6K | 281 | 278 |
| 87 | Automation | 56 | 1.6K | 392 | 532 |
| 88 | Control Theory | 64 | 1.6K | 254 | 255 |
| 89 | Engineering | 108 | 1.6K | 427 | 629 |
| 90 | Environmental Law | 28 | 1.5K | 204 | 257 |
| 91 | Data Mining | 14 | 1.4K | 577 | 265 |
| 92 | Tourism | 25 | 1.4K | 393 | 365 |
| 93 | Pharmaceutical Chemistry | 68 | 1.4K | 675 | 877 |
| 93 | Nonlinear functional analysis | 79 | 1.4K | 36 | 57 |
| 95 | Botany | 45 | 1.4K | 1015 | 1071 |
| 96 | sanitation | 36 | 1.4K | 323 | 512 |
| 97 | Genetics | 48 | 1.3K | 751 | 991 |
| 98 | Biomass Energy | 30 | 1.3K | 622 | 696 |
| 99 | Building Materials | 50 | 1.3K | 300 | 526 |
| 100 | health planning | 64 | 1.3K | 209 | 247 |
| 101 | miniaturization | 26 | 1.3K | 509 | 535 |
| 102 | Microelectronics | 21 | 1.3K | 615 | 470 |
| 103 | data collection | 3 | 1.3K | 1045 | 211 |
| 104 | Nutrition | 45 | 1.3K | 929 | 1045 |
| 105 | Plant physiology | 28 | 1.3K | 647 | 657 |
| 106 | Cybernetics | 65 | 1.2K | 174 | 361 |
| 107 | Insect biochemistry | 30 | 1.2K | 51 | 55 |
| 108 | Polymers | 52 | 1.2K | 1191 | 1235 |
| 109 | Nonlinear Dynamics | 33 | 1.1K | 626 | 538 |
| 110 | Electromagnetism | 62 | 1.1K | 83 | 152 |
| 110 | Entomology | 47 | 1.1K | 440 | 373 |
| 112 | Functional Analysis | 64 | 1.1K | 136 | 167 |
| 113 | Analytical Biochemistry | 66 | 1.1K | 118 | 290 |
| 114 | Optical Communications | 76 | 1.1K | 33 | 61 |
| 115 | Boundary Value Problems | 57 | 1.0K | 52 | 93 |
| 116 | Carbon | 24 | 1.0K | 335 | 432 |
| 117 | Wireless Communication Systems | 34 | 1.0K | 640 | 554 |
| 118 | food technology | 49 | 1.0K | 444 | 680 |
| 119 | coal | 44 | 1.0K | 250 | 454 |
| 120 | Quantum Gravity | 151 | 1.0K | 379 | 762 |
| 121 | polymerization | 42 | 991 | 1117 | 1099 |
| 122 | Numerical Analysis | 52 | 966 | 398 | 415 |
| 123 | Industrial Microbiology | 37 | 927 | 341 | 584 |
| 124 | management | 24 | 925 | 1228 | 1197 |
| 124 | Plants | 27 | 925 | 563 | 666 |
| 126 | Antenna Arrays | 25 | 920 | 123 | 100 |
| 127 | Renewable Energy Sources | 20 | 878 | 975 | 1218 |
| 128 | Nanoparticles | 52 | 877 | 237 | 534 |
| 129 | Electrochemical Analysis | 42 | 876 | 264 | 351 |
| 130 | Solitons | 44 | 874 | 78 | 149 |
| 130 | Fractals | 44 | 874 | 79 | 150 |
| 130 | Chaos | 44 | 874 | 78 | 149 |
| 133 | plant molecular biology | 18 | 870 | 555 | 619 |
| 134 | Cancer | 22 | 821 | 1003 | 1051 |
| 135 | Luminescence | 49 | 809 | 122 | 147 |
| 136 | Psychology | 36 | 806 | 1319 | 1333 |
| 137 | Signal Processing | 29 | 791 | 812 | 849 |
| 138 | Molecules | 93 | 776 | 136 | 412 |
| 139 | Virology | 11 | 744 | 1240 | 1132 |
| 140 | Energy Policy | 33 | 743 | 686 | 1150 |
| 140 | Dynamics | 63 | 743 | 123 | 239 |
| 142 | Quantum Optics | 78 | 741 | 30 | 161 |
| 143 | Atomic spectroscopy | 80 | 719 | 48 | 255 |
| 144 | Differential Equations | 29 | 714 | 223 | 204 |
| 145 | Plant diseases | 20 | 702 | 695 | 544 |
| 146 | Chromatographic analysis | 52 | 701 | 243 | 388 |
| 147 | Photochemistry | 30 | 700 | 359 | 455 |
| 148 | Solid State Chemistry | 45 | 698 | 603 | 745 |
| 149 | Hydrology | 26 | 692 | 708 | 756 |
| 150 | soil microbiology | 15 | 689 | 580 | 656 |
| 151 | Astronomy | 48 | 687 | 787 | 1114 |
| 151 | Plant Ecology | 16 | 687 | 715 | 691 |
| 153 | Computational Intelligence | 57 | 682 | 13 | 65 |
| 154 | Behavior | 8 | 681 | 1791 | 1287 |
| 155 | Pesticides | 36 | 679 | 60 | 71 |
| 156 | Mechatronics | 51 | 675 | 77 | 199 |
| 156 | Photobiology | 27 | 675 | 216 | 300 |
| 158 | Surface-Active Agents | 10 | 664 | 499 | 296 |
| 158 | Surface properties | 10 | 664 | 544 | 328 |
| 160 | computer networks | 24 | 655 | 795 | 801 |
| 161 | Sustainable Development | 13 | 654 | 801 | 650 |
| 162 | Mathematical Physics | 68 | 652 | 582 | 872 |
| 163 | Social Sciences | 27 | 637 | 1020 | 836 |
| 163 | energy conservation | 14 | 637 | 850 | 877 |
| 165 | Organometallic chemistry | 46 | 622 | 319 | 482 |
| 165 | Laser Spectroscopy | 74 | 622 | 25 | 160 |
| 167 | Medical Laboratory Science | 21 | 618 | 649 | 807 |
| 168 | Soil Science | 21 | 609 | 602 | 684 |
| 169 | Climatology | 16 | 600 | 660 | 643 |
| 170 | air quality management | 17 | 599 | 69 | 92 |
| 171 | Physical organic chemistry | 17 | 596 | 554 | 400 |
| 172 | Neurochemistry | 27 | 590 | 739 | 912 |
| 173 | Adolescent | 17 | 573 | 737 | 632 |
| 173 | Soil ecology | 10 | 573 | 344 | 264 |
| 175 | Sociology | 18 | 571 | 1136 | 940 |
| 176 | Immunopharmacology | 22 | 563 | 230 | 271 |
| 177 | Immunotherapy | 24 | 561 | 481 | 710 |
| 178 | Membranes | 13 | 560 | 813 | 804 |
| 179 | cytokines | 22 | 556 | 261 | 412 |
| 180 | proteins | 25 | 554 | 586 | 677 |
| 181 | Signal Transduction | 13 | 553 | 592 | 644 |
| 182 | Genomics | 37 | 552 | 724 | 1137 |
| 183 | Radio | 13 | 544 | 650 | 565 |
| 184 | Public Health | 16 | 536 | 2015 | 1747 |
| 184 | Clinical Chemistry | 24 | 536 | 831 | 1046 |
| 186 | Neurology | 27 | 533 | 1499 | 1822 |
| 187 | dietary supplements | 27 | 525 | 88 | 210 |
| 188 | Quantum theory | 27 | 506 | 243 | 290 |
| 189 | Meteorology | 16 | 501 | 850 | 971 |
| 190 | Chromatography | 29 | 497 | 344 | 458 |
| 191 | Nanochemistry | 26 | 486 | 184 | 251 |
| 192 | violence | 10 | 477 | 485 | 377 |
| 192 | sex crimes | 10 | 477 | 287 | 169 |
| 194 | United States | 22 | 472 | 1702 | 1688 |
| 195 | toxicity testing | 16 | 471 | 98 | 124 |
| 196 | Environmental Chemistry | 18 | 466 | 662 | 1020 |
| 196 | Electrophoresis | 22 | 466 | 465 | 578 |
| 198 | Catalysts | 12 | 460 | 233 | 166 |
| 199 | Environmental Geology | 23 | 458 | 427 | 615 |
| 200 | Radio waves | 12 | 455 | 426 | 381 |
| 201 | Information Theory | 37 | 449 | 276 | 526 |
| 202 | natural products | 26 | 438 | 458 | 580 |
| 203 | Investment analysis | 33 | 437 | 71 | 233 |
| 204 | Quantum electronics | 36 | 431 | 345 | 503 |
| 205 | Composite Materials | 13 | 422 | 1311 | 1369 |
| 206 | environmental indicators | 21 | 415 | 237 | 557 |
| 206 | cell interaction | 10 | 415 | 489 | 485 |
| 208 | Herbal medicine | 24 | 414 | 116 | 269 |
| 208 | Fiber Optics | 30 | 414 | 225 | 321 |
| 210 | Simulation Methods | 3 | 403 | 1023 | 192 |
| 211 | soil conservation | 20 | 402 | 129 | 244 |
| 212 | Mycology | 17 | 395 | 584 | 701 |
| 213 | Physiology | 20 | 392 | 1520 | 1845 |
| 214 | Ecological Engineering | 9 | 389 | 253 | 264 |
| 215 | bioluminescence | 20 | 379 | 32 | 22 |
| 216 | Molecular structure | 49 | 372 | 398 | 991 |
| 217 | Chromosomes | 9 | 371 | 444 | 425 |
| 217 | Fungi | 9 | 371 | 539 | 535 |
| 219 | Earth Sciences | 20 | 368 | 1257 | 1426 |
| 220 | brain mapping | 6 | 367 | 398 | 349 |
| 221 | Genetic engineering | 16 | 366 | 783 | 987 |
| 222 | Economics | 16 | 365 | 1885 | 1630 |
| 222 | Microbial Ecology | 13 | 365 | 979 | 1278 |
| 222 | drug toxicity | 13 | 365 | 75 | 119 |
| 225 | Internet of Things | 13 | 361 | 474 | 544 |
| 225 | internet | 13 | 361 | 657 | 706 |
| 227 | Biogeochemistry | 5 | 357 | 768 | 623 |
| 228 | indoor air pollution | 12 | 353 | 105 | 135 |
| 228 | Ventilation | 12 | 353 | 161 | 164 |
| 228 | Sick building syndrome | 12 | 353 | 105 | 135 |
| 231 | Chemical industry | 19 | 352 | 388 | 376 |
| 232 | Immunology | 16 | 351 | 1195 | 1468 |
| 233 | Oxidative stress | 4 | 350 | 685 | 586 |
| 233 | Cellular senescence | 4 | 350 | 194 | 227 |
| 235 | Image Processing | 24 | 348 | 740 | 1101 |
| 236 | Asia | 25 | 343 | 725 | 869 |
| 237 | human behavior | 5 | 342 | 1755 | 1506 |
| 238 | Genetic Toxicology | 8 | 340 | 153 | 196 |
| 239 | Industrial Engineering | 16 | 338 | 668 | 835 |
| 239 | Technology | 34 | 338 | 1050 | 1646 |
| 241 | Biometrics | 19 | 337 | 355 | 427 |
| 241 | Breeding | 3 | 337 | 1078 | 531 |
| 243 | Agricultural systems | 1 | 333 | 530 | 157 |
| 244 | Food Microbiology | 5 | 330 | 848 | 725 |
| 245 | Radiation | 29 | 328 | 550 | 799 |
| 245 | Brain | 12 | 328 | 1249 | 1301 |
| 247 | Nanophotonics | 11 | 323 | 102 | 145 |
| 248 | Astrophysics | 27 | 318 | 1216 | 1583 |
| 249 | adolescence | 9 | 315 | 481 | 473 |
| 249 | personality | 8 | 315 | 877 | 881 |
| 251 | Food additives | 13 | 305 | 401 | 629 |
| 251 | Zeolites | 7 | 305 | 570 | 517 |
| 253 | fuel cells | 7 | 304 | 798 | 800 |
| 254 | Developing countries | 11 | 302 | 1115 | 1025 |
| 255 | Crystallography | 84 | 296 | 156 | 460 |
| 256 | Multimedia Systems | 15 | 295 | 726 | 709 |
| 257 | biological evolution | 8 | 292 | 1132 | 1241 |
| 258 | Alternative Medicine | 10 | 289 | 669 | 682 |
| 258 | complementary therapies | 10 | 289 | 737 | 701 |
| 258 | Detectors | 17 | 289 | 535 | 667 |
| 261 | Intelligent Control Systems | 39 | 286 | 96 | 241 |
| 261 | Biodiversity | 22 | 286 | 665 | 1112 |
| 263 | Organometallic compounds | 15 | 283 | 550 | 643 |
| 264 | Evidence-Based Medicine | 11 | 280 | 258 | 259 |
| 265 | Electronics | 25 | 278 | 1188 | 1546 |
| 266 | Heat Exchangers | 14 | 270 | 517 | 820 |
| 266 | Nonlinear systems | 16 | 270 | 168 | 237 |
| 268 | Geophysics | 11 | 269 | 1703 | 1743 |
| 269 | Child welfare | 10 | 267 | 499 | 461 |
| 269 | Youth | 6 | 267 | 456 | 404 |
| 271 | biological factors | 11 | 265 | 945 | 957 |
| 271 | Social work | 9 | 265 | 753 | 526 |
| 273 | Land use | 13 | 263 | 420 | 626 |
| 274 | Medical Microbiology | 5 | 262 | 1393 | 1295 |
| 275 | Nervous system | 16 | 259 | 942 | 1337 |
| 276 | Cell death | 10 | 258 | 565 | 800 |
| 277 | Neuropsychology | 9 | 253 | 1216 | 1191 |
| 277 | Proteome | 11 | 253 | 513 | 683 |
| 279 | Plant cells | 5 | 252 | 747 | 948 |
| 280 | bioclimatology | 7 | 251 | 509 | 417 |
| 280 | multimedia | 6 | 251 | 320 | 289 |
| 280 | Interactive multimedia | 6 | 251 | 353 | 306 |
| 283 | Atmospheric Physics | 8 | 250 | 871 | 892 |
| 284 | Recombinant DNA | 10 | 245 | 740 | 785 |
| 285 | Plant Genetics | 6 | 244 | 435 | 507 |
| 286 | Algebra | 22 | 243 | 546 | 460 |
| 287 | Geomorphology | 12 | 242 | 676 | 940 |
| 287 | Light | 8 | 242 | 521 | 721 |
| 289 | Economic History | 14 | 239 | 1509 | 1446 |
| 290 | Information Technology | 17 | 238 | 897 | 1302 |
| 291 | land degradation | 11 | 237 | 122 | 236 |
| 291 | Crystal growth | 12 | 237 | 434 | 558 |
| 291 | degradation | 11 | 237 | 122 | 236 |
| 294 | Geochemistry | 5 | 236 | 1405 | 1164 |
| 295 | Atmospheric Chemistry | 6 | 235 | 572 | 646 |
| 296 | Mutagenesis | 3 | 234 | 407 | 133 |
| 297 | Archaeology | 23 | 233 | 430 | 617 |
| 297 | Environmental Microbiology | 6 | 233 | 876 | 999 |
| 299 | Quantum Communication | 9 | 232 | 66 | 111 |
| 299 | mutagens | 2 | 232 | 748 | 534 |
| 301 | Bacteriology | 4 | 230 | 1380 | 1196 |
| 302 | Business Ethics | 4 | 228 | 851 | 899 |
| 303 | Horticulture | 8 | 226 | 391 | 302 |
| 304 | Remote Sensing | 8 | 225 | 852 | 623 |
| 305 | Teaching | 11 | 223 | 879 | 867 |
| 306 | finance | 15 | 219 | 1052 | 1248 |
| 307 | Industrial Safety | 3 | 217 | 1159 | 609 |
| 307 | soil management | 5 | 217 | 380 | 380 |
| 307 | tillage | 5 | 217 | 281 | 325 |
| 310 | Molecular cloning | 9 | 214 | 756 | 805 |
| 310 | Genetic recombination | 9 | 214 | 737 | 792 |
| 312 | software | 4 | 211 | 903 | 722 |
| 313 | Neurophysiology | 10 | 207 | 1435 | 1674 |
| 313 | Industry | 2 | 207 | 247 | 203 |
| 315 | Computational Complexity | 25 | 205 | 134 | 339 |
| 316 | Microbial Biotechnology | 14 | 204 | 244 | 564 |
| 316 | child abuse | 5 | 204 | 595 | 553 |
| 316 | drugs | 9 | 204 | 1053 | 1122 |
| 319 | Organic Geochemistry | 1 | 203 | 537 | 284 |
| 319 | Cosmochemistry | 1 | 203 | 1217 | 588 |
| 321 | Microorganisms | 3 | 202 | 959 | 802 |
| 322 | Molecular evolution | 7 | 200 | 848 | 1031 |
| 322 | food handling | 11 | 200 | 321 | 622 |
| 324 | Aging | 12 | 195 | 1173 | 1390 |
| 325 | Pharmaceutical Technology | 11 | 191 | 756 | 1019 |
| 326 | synthesis | 14 | 187 | 356 | 415 |
| 327 | Obesity | 3 | 185 | 1527 | 1252 |
| 328 | hydrocolloids | 5 | 184 | 453 | 633 |
| 329 | Biological Systems | 3 | 183 | 522 | 309 |
| 329 | Smoking | 2 | 183 | 812 | 508 |
| 329 | Substance Abuse | 2 | 183 | 1415 | 789 |
| 329 | drug addiction | 2 | 183 | 1080 | 726 |
| 329 | alcoholism | 2 | 183 | 1403 | 863 |
| 334 | Hormones | 5 | 182 | 864 | 833 |
| 335 | Endocrinology | 4 | 177 | 1903 | 1744 |
| 336 | Quality Control | 9 | 173 | 823 | 1104 |
| 336 | protein | 12 | 173 | 519 | 750 |
| 338 | ecosystem | 9 | 171 | 685 | 1049 |
| 339 | Inflammation | 5 | 170 | 782 | 894 |
| 340 | Measurement | 8 | 166 | 781 | 847 |
| 340 | soil pollution | 10 | 166 | 152 | 290 |
| 340 | econometric models | 4 | 166 | 532 | 417 |
| 343 | Entropy | 13 | 165 | 384 | 523 |
| 344 | Plant tissue culture | 5 | 164 | 507 | 487 |
| 344 | Plant cell culture | 5 | 164 | 442 | 483 |
| 346 | Hazardous waste | 7 | 163 | 555 | 967 |
| 347 | Sites | 2 | 157 | 638 | 471 |
| 348 | food contamination | 10 | 155 | 371 | 526 |
| 349 | Gene expression regulation | 10 | 154 | 416 | 657 |
| 349 | Genetic regulation | 10 | 154 | 483 | 808 |
| 351 | Operations Research | 6 | 152 | 1576 | 1499 |
| 351 | clay | 4 | 152 | 680 | 713 |
| 353 | Securities | 6 | 151 | 142 | 237 |
| 353 | stocks | 6 | 151 | 31 | 106 |
| 355 | Psychiatry | 4 | 150 | 2816 | 2429 |
| 355 | big data | 7 | 150 | 260 | 380 |
| 355 | Chromosome mapping | 13 | 150 | 698 | 1293 |
| 355 | gene mapping | 13 | 150 | 766 | 1433 |
| 359 | Systems Analysis | 10 | 147 | 525 | 702 |
| 359 | Mineral resources | 5 | 147 | 425 | 535 |
| 359 | biocatalysis | 2 | 147 | 220 | 340 |
| 359 | Homogeneous catalysis | 2 | 147 | 220 | 340 |
| 359 | Heterogeneous catalysis | 2 | 147 | 220 | 340 |
| 364 | Diagnostic Imaging | 8 | 146 | 1016 | 1100 |
| 365 | optical devices | 9 | 145 | 186 | 270 |
| 365 | plant communities | 7 | 145 | 669 | 950 |
| 367 | Diet | 3 | 143 | 1619 | 1629 |
| 368 | Bioremediation | 7 | 142 | 435 | 693 |
| 368 | Water quality | 7 | 142 | 58 | 90 |
| 368 | Water chemistry | 7 | 142 | 90 | 142 |
| 368 | Microwaves | 19 | 142 | 525 | 762 |
| 372 | Systems Biology | 5 | 141 | 1033 | 1031 |
| 372 | radioactive waste | 5 | 141 | 577 | 989 |
| 372 | industrial waste | 5 | 141 | 601 | 990 |
| 375 | Molecular Genetics | 4 | 140 | 1337 | 1445 |
| 375 | energy resources | 3 | 140 | 1286 | 1448 |
| 377 | Computational Chemistry | 10 | 138 | 310 | 528 |
| 378 | Mass Spectrometry | 7 | 135 | 693 | 756 |
| 379 | Algae | 9 | 134 | 400 | 579 |
| 379 | catalytic activity | 7 | 134 | 407 | 586 |
| 381 | Supramolecular chemistry | 13 | 133 | 48 | 83 |
| 382 | Nitric oxide | 3 | 131 | 242 | 222 |
| 383 | particles | 8 | 129 | 513 | 715 |
| 383 | energy development | 2 | 129 | 1092 | 759 |
| 385 | Energy Conversion | 6 | 128 | 845 | 1193 |
| 386 | sustainability | 3 | 127 | 857 | 818 |
| 387 | mycoses | 3 | 126 | 682 | 754 |
| 388 | Nonlinear Optics | 5 | 124 | 80 | 69 |
| 388 | Agriculture | 14 | 124 | 835 | 1491 |
| 390 | Computer Science | 10 | 122 | 1069 | 1297 |
| 390 | Adaptive control systems | 13 | 122 | 173 | 342 |
| 392 | Structural Engineering | 5 | 121 | 1217 | 1163 |
| 392 | Robotics | 13 | 121 | 786 | 1247 |
| 392 | Computational Biology | 9 | 121 | 1309 | 1773 |
| 392 | Cognitive Science | 8 | 121 | 897 | 1325 |
| 396 | Sustainable agriculture | 11 | 120 | 242 | 553 |
| 397 | Marine Biology | 8 | 119 | 1481 | 1898 |
| 397 | Plant hormones | 12 | 119 | 77 | 286 |
| 399 | Urban Planning | 2 | 118 | 498 | 352 |
| 399 | Bioenergetics | 3 | 118 | 804 | 762 |
| 399 | community development | 2 | 118 | 735 | 425 |
| 399 | Magnetic Resonance Spectroscopy | 7 | 118 | 710 | 716 |
| 399 | Housing | 2 | 118 | 612 | 426 |
| 399 | Population | 2 | 118 | 1014 | 722 |
| 405 | Integrative Medicine | 10 | 117 | 89 | 103 |
| 405 | Great Lakes | 3 | 117 | 207 | 165 |
| 407 | Health Policy | 2 | 116 | 2134 | 1396 |
| 407 | cell physiology | 5 | 116 | 991 | 1288 |
| 409 | Statistics | 12 | 115 | 1314 | 1492 |
| 409 | Food service management | 2 | 115 | 545 | 545 |
| 411 | Biopharmaceutics | 1 | 114 | 1460 | 945 |
| 411 | Antioxidants | 3 | 114 | 694 | 820 |
| 413 | Longevity | 6 | 113 | 64 | 152 |
| 413 | rejuvenation | 6 | 113 | 40 | 129 |
| 413 | Liver diseases | 3 | 113 | 1006 | 1086 |
| 416 | Information Systems | 5 | 112 | 1052 | 1123 |
| 417 | Telecommunication Systems | 13 | 110 | 694 | 1116 |
| 417 | viruses | 3 | 110 | 1090 | 1169 |
| 419 | Lipids | 6 | 109 | 827 | 1163 |
| 420 | Drug delivery systems | 9 | 108 | 857 | 1421 |
| 420 | nucleic acids | 3 | 108 | 1321 | 1365 |
| 420 | Recycling | 2 | 108 | 771 | 902 |
| 423 | food industry | 14 | 106 | 177 | 484 |
| 424 | Geography | 9 | 105 | 1128 | 1574 |
| 425 | Schizophrenia | 4 | 104 | 742 | 850 |
| 425 | natural disasters | 5 | 104 | 977 | 1161 |
| 427 | Mental Health | 2 | 103 | 1740 | 1188 |
| 427 | Detergents | 10 | 103 | 12 | 11 |
| 427 | Granular materials | 4 | 103 | 493 | 556 |
| 430 | Oncology | 7 | 102 | 1140 | 1899 |
| 430 | Oxidation-reduction | 2 | 102 | 858 | 957 |
| 432 | Engineering Geology | 3 | 101 | 1307 | 1192 |
| 432 | scientific societies | 5 | 101 | 479 | 587 |
| 434 | Chemical kinetics | 10 | 98 | 308 | 380 |
| 434 | Calculus of Variations | 4 | 98 | 475 | 358 |
| 434 | enzymes | 6 | 98 | 977 | 1308 |
| 437 | Paleoclimatology | 5 | 97 | 824 | 1013 |
| 437 | Graph Theory | 17 | 97 | 234 | 384 |
| 437 | mass transfer | 3 | 97 | 1616 | 1543 |
| 437 | Communication | 9 | 97 | 1168 | 1653 |
| 441 | Humanities | 13 | 95 | 669 | 1066 |
| 441 | Public Policy | 7 | 95 | 1066 | 1521 |
| 441 | Developmental Immunology | 3 | 95 | 564 | 631 |
| 444 | Child Development | 5 | 94 | 1322 | 1548 |
| 445 | atmosphere | 4 | 91 | 615 | 780 |
| 446 | Invertebrates | 4 | 90 | 486 | 500 |
| 447 | Engineering Mathematics | 10 | 89 | 988 | 1306 |
| 448 | Fluorescence | 10 | 88 | 131 | 319 |
| 449 | Thermodynamics | 7 | 87 | 794 | 816 |
| 449 | Psychophysiology | 4 | 87 | 2039 | 2237 |
| 451 | Population Genetics | 7 | 85 | 705 | 1200 |
| 452 | Educational Technology | 2 | 84 | 1979 | 1507 |
| 452 | Ceramic materials | 8 | 84 | 797 | 1192 |
| 452 | Metals | 6 | 84 | 1407 | 1665 |
| 455 | mutation | 3 | 83 | 530 | 646 |
| 455 | Optoelectronic devices | 9 | 83 | 473 | 606 |
| 457 | Radiation effects | 5 | 82 | 429 | 761 |
| 458 | Phylogeny | 3 | 81 | 839 | 1032 |
| 458 | Genes | 8 | 81 | 608 | 1029 |
| 460 | Information Retrieval | 6 | 80 | 265 | 485 |
| 460 | symbiosis | 6 | 80 | 34 | 100 |
| 460 | Combinatorial analysis | 11 | 80 | 526 | 624 |
| 463 | Plant Biotechnology | 7 | 79 | 408 | 789 |
| 463 | Metallurgy | 5 | 79 | 1671 | 1686 |
| 463 | Semiconductors | 16 | 79 | 865 | 1716 |
| 463 | Immunity | 4 | 79 | 1216 | 1667 |
| 467 | Geology | 8 | 78 | 1710 | 2197 |
| 467 | Histology | 6 | 78 | 1177 | 1635 |
| 467 | Human-Computer Interaction | 5 | 78 | 1156 | 1462 |
| 467 | Emulsions | 11 | 78 | 99 | 236 |
| 467 | applications | 1 | 78 | 136 | 9 |
| 472 | International Finance | 7 | 77 | 1135 | 1579 |
| 473 | Superconductors | 1 | 76 | 1177 | 652 |
| 473 | Immune system | 3 | 76 | 778 | 987 |
| 475 | Nanobiotechnology | 2 | 75 | 517 | 688 |
| 476 | radiative transfer | 14 | 74 | 229 | 488 |
| 476 | Minerals | 4 | 74 | 652 | 824 |
| 478 | Physical Geography | 6 | 72 | 307 | 516 |
| 478 | Economic Development | 2 | 72 | 1776 | 1577 |
| 478 | Parasitology | 1 | 72 | 2712 | 1878 |
| 481 | Enzyme | 2 | 71 | 663 | 740 |
| 482 | Thermochemistry | 2 | 70 | 579 | 492 |
| 482 | Japan | 6 | 70 | 1204 | 1470 |
| 484 | Intelligent Transportation Systems | 6 | 69 | 775 | 1229 |
| 484 | Forest Ecology | 3 | 69 | 935 | 1094 |
| 484 | nuclear magnetic resonance | 6 | 69 | 672 | 797 |
| 484 | Forest Management | 3 | 69 | 906 | 1043 |
| 484 | Calorimetry | 5 | 69 | 951 | 1120 |
| 484 | Thermal analysis | 5 | 69 | 951 | 1120 |
| 490 | Discourse Analysis | 7 | 68 | 190 | 399 |
| 491 | Anti-inflammatory agents | 2 | 67 | 324 | 263 |
| 491 | Ultrasonics | 3 | 67 | 1196 | 1510 |
| 491 | Sonochemistry | 3 | 67 | 660 | 1062 |
| 491 | Matroids | 1 | 67 | 400 | 241 |
| 495 | Computer Graphics | 9 | 66 | 975 | 1563 |
| 495 | Korea | 2 | 66 | 470 | 205 |
| 497 | Structural design | 1 | 65 | 1309 | 829 |
| 497 | Computer Vision | 2 | 65 | 1306 | 1240 |
| 497 | Machine Learning | 6 | 65 | 187 | 366 |
| 497 | Conservation Biology | 8 | 65 | 615 | 1169 |
| 497 | Lipid metabolism | 1 | 65 | 673 | 570 |
| 497 | Lipid | 1 | 65 | 675 | 572 |
| 497 | place marketing | 1 | 65 | 242 | 233 |
| 497 | Evolution | 5 | 65 | 1288 | 1768 |
| 505 | Immunopathology | 2 | 64 | 1069 | 1092 |
| 505 | Socialization | 1 | 64 | 885 | 757 |
| 505 | role | 1 | 64 | 760 | 665 |
| 508 | Critical Care | 1 | 63 | 1443 | 1314 |
| 508 | Critical Care Medicine | 1 | 63 | 1368 | 1290 |
| 508 | commerce | 6 | 63 | 1078 | 1567 |
| 511 | Electrical Engineering | 10 | 62 | 1793 | 2247 |
| 511 | Mountains | 1 | 62 | 786 | 293 |
| 513 | Optoelectronics | 7 | 61 | 295 | 356 |
| 513 | Trace elements | 5 | 61 | 154 | 428 |
| 515 | Bibliometrics | 3 | 60 | 130 | 225 |
| 516 | Molecular ecology | 1 | 59 | 1347 | 1354 |
| 516 | Eastern Europe | 5 | 59 | 604 | 598 |
| 516 | Biomass | 2 | 59 | 871 | 1022 |
| 516 | Microscopy | 7 | 59 | 869 | 1232 |
| 516 | drug evaluation | 3 | 59 | 1157 | 1352 |
| 521 | Mental Disorders | 3 | 58 | 2147 | 2400 |
| 521 | Environmental Geochemistry | 3 | 58 | 551 | 690 |
| 521 | North America | 3 | 58 | 792 | 751 |
| 524 | Transgenic plants | 3 | 57 | 389 | 614 |
| 524 | Liquid chromatography | 8 | 57 | 228 | 366 |
| 526 | biofuels | 3 | 56 | 245 | 589 |
| 526 | Decision making | 5 | 56 | 1069 | 1538 |
| 528 | economic policy | 2 | 55 | 2563 | 1904 |
| 528 | heredity | 6 | 55 | 416 | 654 |
| 528 | pharmaceutical industry | 3 | 55 | 558 | 621 |
| 531 | Mechanical Engineering | 10 | 54 | 1383 | 2004 |
| 531 | Soil biology | 2 | 54 | 974 | 1216 |
| 531 | hazard mitigation | 3 | 54 | 933 | 1192 |
| 531 | rivers | 1 | 54 | 506 | 353 |
| 531 | magnetic resonance | 2 | 54 | 682 | 506 |
| 536 | Higher Education | 1 | 53 | 1111 | 661 |
| 536 | Energy Storage | 4 | 53 | 1093 | 1415 |
| 536 | tests | 1 | 53 | 375 | 311 |
| 539 | vibration | 3 | 52 | 1133 | 1289 |
| 539 | biological monitoring | 2 | 52 | 611 | 683 |
| 541 | Fuzzy Logic | 1 | 51 | 141 | 100 |
| 541 | Drug design | 3 | 51 | 1425 | 1715 |
| 541 | Fuzzy Sets | 1 | 51 | 141 | 100 |
| 541 | DNS | 5 | 51 | 319 | 631 |
| 541 | Seaweed | 3 | 51 | 525 | 711 |
| 541 | Fuzzy algorithms | 1 | 51 | 141 | 100 |
| 541 | Mental illness | 2 | 51 | 1709 | 1905 |
| 548 | Paleontology | 3 | 49 | 1203 | 1226 |
| 548 | Parallel Processing | 2 | 49 | 533 | 632 |
| 548 | Genetic algorithms | 2 | 49 | 407 | 555 |
| 548 | Water quality management | 4 | 49 | 1515 | 1882 |
| 548 | Raman spectroscopy | 5 | 49 | 591 | 968 |
| 548 | Evolutionary Computation | 2 | 49 | 622 | 789 |
| 548 | Reproductive toxicology | 2 | 49 | 521 | 599 |
| 548 | Protozoa | 7 | 49 | 224 | 541 |
| 548 | nuclear magnetic resonance spectroscopy | 1 | 49 | 1018 | 695 |
| 548 | Paleopathology | 2 | 49 | 390 | 298 |
| 548 | free radicals | 5 | 49 | 934 | 1657 |
| 548 | NMR | 1 | 49 | 846 | 519 |
| 560 | Mobile Computing | 2 | 48 | 1275 | 1174 |
| 560 | Biochemical Genetics | 4 | 48 | 354 | 357 |
| 560 | Wildlife conservation | 1 | 48 | 1461 | 1368 |
| 563 | Histochemistry | 5 | 47 | 745 | 1047 |
| 563 | Biodiversity conservation | 8 | 47 | 891 | 1863 |
| 565 | Sports Medicine | 12 | 46 | 1201 | 2129 |
| 565 | X-rays | 13 | 46 | 159 | 519 |
| 565 | water supply | 2 | 46 | 977 | 1130 |
| 565 | Soviet Union | 5 | 46 | 453 | 473 |
| 565 | Vaccines | 6 | 46 | 983 | 1706 |
| 570 | Developmental Biology | 3 | 45 | 1619 | 2101 |
| 570 | Electromagnetic compatibility | 2 | 45 | 431 | 382 |
| 570 | global environmental change | 2 | 45 | 942 | 1201 |
| 570 | Library Science | 2 | 45 | 1171 | 802 |
| 570 | carbon monoxide | 3 | 45 | 332 | 689 |
| 575 | Urology | 1 | 44 | 1511 | 1314 |
| 576 | Structural dynamics | 1 | 43 | 1327 | 1317 |
| 576 | Social policy | 1 | 43 | 1610 | 1114 |
| 576 | Groundwater | 3 | 43 | 503 | 714 |
| 576 | planning | 1 | 43 | 1324 | 943 |
| 576 | Economic planning | 1 | 43 | 936 | 758 |
| 581 | Nuclear Fusion | 1 | 42 | 793 | 582 |
| 581 | industrial hygiene | 1 | 42 | 1618 | 940 |
| 583 | Pharmacy | 4 | 41 | 1612 | 2225 |
| 583 | Neurobiology | 2 | 41 | 1540 | 1839 |
| 583 | Neurotoxicology | 2 | 41 | 691 | 942 |
| 583 | Marine Pollution | 1 | 41 | 1736 | 1677 |
| 587 | Radiography | 3 | 40 | 658 | 1031 |
| 587 | microwave antennas | 8 | 40 | 168 | 409 |
| 587 | Radio wave propagation | 8 | 40 | 403 | 757 |
| 590 | Epidemiology | 7 | 39 | 1977 | 3261 |
| 590 | Orthopedics | 3 | 39 | 1172 | 1378 |
| 590 | Psychoneuroimmunology | 1 | 39 | 853 | 956 |
| 590 | Oral Medicine | 2 | 39 | 886 | 788 |
| 590 | Orthopedic Surgery | 3 | 39 | 663 | 804 |
| 590 | Solar Energy | 4 | 39 | 1495 | 2367 |
| 590 | Neuroimmunology | 1 | 39 | 951 | 1042 |
| 597 | Food Safety | 3 | 38 | 241 | 395 |
| 597 | Plant genetic engineering | 2 | 38 | 969 | 1212 |
| 597 | Cell differentiation | 3 | 38 | 1174 | 1733 |
| 597 | wind erosion | 2 | 38 | 137 | 241 |
| 597 | United Kingdom | 1 | 38 | 1919 | 1604 |
| 602 | Materials Engineering | 6 | 37 | 439 | 877 |
| 602 | Natural resources | 3 | 37 | 699 | 1050 |
| 602 | Plant breeding | 2 | 37 | 863 | 989 |
| 602 | East Asia | 6 | 37 | 365 | 681 |
| 602 | Quality of life | 3 | 37 | 1345 | 1961 |
| 602 | investigative techniques | 1 | 37 | 302 | 355 |
| 608 | Software Engineering | 2 | 36 | 1171 | 1178 |
| 608 | Earthquake Engineering | 1 | 36 | 1720 | 1626 |
| 608 | Medical Physics | 2 | 36 | 1540 | 1675 |
| 608 | Ocean Engineering | 1 | 36 | 2074 | 1979 |
| 608 | Southeast Asia | 6 | 36 | 193 | 408 |
| 608 | genome | 4 | 36 | 1084 | 1838 |
| 608 | DNA | 3 | 36 | 572 | 793 |
| 608 | Europe | 2 | 36 | 2994 | 2811 |
| 616 | Nursing | 3 | 35 | 1860 | 1999 |
| 616 | Digital Media | 1 | 35 | 402 | 315 |
| 618 | Fluid Mechanics | 6 | 34 | 1046 | 1667 |
| 618 | Arthropods | 2 | 34 | 312 | 343 |
| 620 | Pathology | 1 | 33 | 2126 | 2097 |
| 620 | Cloud Computing | 2 | 33 | 442 | 627 |
| 620 | Database Management | 2 | 33 | 876 | 974 |
| 620 | Tribology | 2 | 33 | 1274 | 1378 |
| 620 | Computational Linguistics | 5 | 33 | 363 | 594 |
| 625 | Speech-Language Pathology | 1 | 32 | 527 | 428 |
| 625 | Linguistics | 1 | 32 | 1902 | 1368 |
| 625 | Educational Psychology | 3 | 32 | 1342 | 1734 |
| 625 | Soil fertility | 1 | 32 | 544 | 657 |
| 625 | automatic speech recognition | 1 | 32 | 324 | 277 |
| 625 | extraterrestrial environment | 1 | 32 | 933 | 751 |
| 625 | astronomical phenomena | 1 | 32 | 863 | 701 |
| 625 | Aquaculture | 2 | 32 | 1552 | 1703 |
| 633 | motivation | 1 | 31 | 657 | 614 |
| 633 | Learning | 1 | 31 | 1723 | 1611 |
| 635 | Nuclear Engineering | 2 | 30 | 1554 | 1487 |
| 635 | Pragmatics | 1 | 30 | 147 | 36 |
| 635 | Edible plants | 3 | 30 | 198 | 545 |
| 635 | Microstructure | 3 | 30 | 949 | 1144 |
| 639 | Combustion | 3 | 29 | 1147 | 1599 |
| 640 | Obstetrics | 3 | 28 | 1709 | 2175 |
| 640 | Geometry | 13 | 28 | 564 | 1101 |
| 640 | Social Psychology | 3 | 28 | 2081 | 2729 |
| 640 | Safety management | 4 | 28 | 459 | 876 |
| 644 | Hematology | 2 | 27 | 1627 | 1916 |
| 644 | Microbial Genetics | 3 | 27 | 322 | 631 |
| 644 | Fishery management | 1 | 27 | 1188 | 1075 |
| 644 | rehabilitation | 1 | 27 | 2717 | 2578 |
| 644 | Money | 1 | 27 | 661 | 733 |
| 649 | Ecological Genetics | 6 | 26 | 384 | 884 |
| 649 | Geographic information systems | 2 | 26 | 1353 | 1453 |
| 649 | Environmental risk assessment | 1 | 26 | 749 | 673 |
| 649 | environmental control | 1 | 26 | 360 | 400 |
| 649 | Chemical processes | 1 | 26 | 979 | 856 |
| 649 | human development | 2 | 26 | 936 | 1267 |
| 649 | Climate | 1 | 26 | 1003 | 1049 |
| 649 | weather | 1 | 26 | 976 | 1031 |
| 657 | Manufacturing Processes | 3 | 25 | 2087 | 2638 |
| 657 | Risk assessment | 4 | 25 | 493 | 1045 |
| 657 | ecological risk assessment | 4 | 25 | 147 | 554 |
| 657 | Geriatric Oncology | 1 | 25 | 798 | 894 |
| 657 | rare diseases | 2 | 25 | 637 | 828 |
| 657 | atmospheric models | 2 | 25 | 651 | 898 |
| 657 | Health Risk Assessment | 4 | 25 | 339 | 828 |
| 657 | biological agents | 8 | 25 | 342 | 563 |
| 665 | Oceanography | 3 | 24 | 1457 | 2023 |
| 665 | Clinical Psychology | 1 | 24 | 1559 | 1601 |
| 665 | Visual Communication | 3 | 24 | 447 | 719 |
| 665 | Algorithms | 2 | 24 | 916 | 985 |
| 665 | Image enhancement | 3 | 24 | 348 | 651 |
| 665 | Social interaction | 1 | 24 | 617 | 639 |
| 665 | Fertilizers | 2 | 24 | 407 | 606 |
| 672 | Bioinformatics | 5 | 23 | 1439 | 2460 |
| 673 | Medical Technology | 3 | 22 | 1432 | 2241 |
| 673 | Medical genetics | 3 | 22 | 1638 | 2536 |
| 673 | Geodesy | 3 | 22 | 748 | 1200 |
| 676 | Bioavailability | 1 | 21 | 194 | 223 |
| 676 | Climate change | 2 | 21 | 1081 | 1740 |
| 676 | Eutrophication | 2 | 21 | 996 | 1617 |
| 676 | Stem cells | 4 | 21 | 982 | 1726 |
| 676 | peptides | 2 | 21 | 966 | 1284 |
| 681 | Physical Therapy | 1 | 20 | 1696 | 1690 |
| 681 | Metabolism | 3 | 20 | 1811 | 2787 |
| 681 | Drug targeting | 1 | 20 | 590 | 824 |
| 681 | transgenic organisms | 1 | 20 | 446 | 582 |
| 681 | transgenic animals | 1 | 20 | 434 | 562 |
| 681 | Plastics | 3 | 20 | 1593 | 2207 |
| 681 | marketing | 1 | 20 | 2647 | 2687 |
| 681 | Nonlinear mechanics | 1 | 20 | 801 | 804 |
| 689 | Surgery | 1 | 19 | 1590 | 1629 |
| 689 | Mathematics Education | 1 | 19 | 841 | 682 |
| 689 | Freshwater Ecology | 3 | 19 | 258 | 486 |
| 689 | Technological Innovations | 2 | 19 | 1314 | 1817 |
| 689 | Mechanics | 5 | 19 | 1031 | 1713 |
| 689 | Porous materials | 3 | 19 | 783 | 1212 |
| 689 | Telecommunication | 5 | 19 | 1972 | 3076 |
| 689 | Aquatic animals | 3 | 19 | 177 | 399 |
| 689 | packaging | 2 | 19 | 146 | 310 |
| 698 | Molecular Pharmacology | 1 | 18 | 1100 | 1382 |
| 698 | Developmental Psychology | 3 | 18 | 989 | 1557 |
| 698 | Human Geography | 1 | 18 | 1654 | 1564 |
| 698 | Regional Planning | 1 | 18 | 2084 | 2088 |
| 698 | Operator theory | 3 | 18 | 455 | 559 |
| 698 | glycoproteins | 1 | 18 | 674 | 830 |
| 698 | Glycoconjugates | 1 | 18 | 674 | 830 |
| 698 | Oligosaccharides | 1 | 18 | 448 | 553 |
| 698 | animal diseases | 1 | 18 | 804 | 910 |
| 698 | probabilities | 2 | 18 | 1469 | 1435 |
| 698 | RNA | 2 | 18 | 558 | 926 |
| 698 | glycolipids | 1 | 18 | 674 | 830 |
| 710 | Logistics | 1 | 17 | 1001 | 1194 |
| 710 | Transportation | 1 | 17 | 2227 | 2295 |
| 710 | Radioisotopes | 2 | 17 | 1195 | 1396 |
| 710 | supercritical fluids | 3 | 17 | 389 | 876 |
| 710 | Tropical Medicine | 3 | 17 | 1568 | 2385 |
| 715 | Production Engineering | 2 | 16 | 2135 | 2582 |
| 715 | Petrology | 1 | 16 | 1144 | 1240 |
| 715 | Health Education | 2 | 16 | 1899 | 2411 |
| 715 | Sleep Disorders | 2 | 16 | 1442 | 1800 |
| 715 | Quality Assurance | 1 | 16 | 710 | 743 |
| 715 | Metabolic syndrome | 1 | 16 | 559 | 695 |
| 715 | Randomized Controlled Trials | 2 | 16 | 1040 | 1307 |
| 715 | Health promotion | 2 | 16 | 1226 | 1603 |
| 715 | Hospitality industry | 1 | 16 | 812 | 1046 |
| 715 | Respiration | 2 | 16 | 1406 | 1969 |
| 715 | mathematical concepts | 1 | 16 | 727 | 682 |
| 715 | Sleep | 2 | 16 | 1474 | 1832 |
| 727 | phytopathogenic bacteria | 1 | 15 | 392 | 564 |
| 727 | air quality | 3 | 15 | 192 | 712 |
| 727 | Sports | 6 | 15 | 1437 | 2504 |
| 727 | Exercise | 5 | 15 | 1106 | 2071 |
| 727 | Isotopes | 1 | 15 | 244 | 295 |
| 732 | International Relations | 1 | 14 | 1526 | 1283 |
| 732 | Asthma | 1 | 14 | 958 | 1060 |
| 732 | Cytogenetics | 7 | 14 | 760 | 1883 |
| 732 | Apoptosis | 1 | 14 | 515 | 775 |
| 732 | neurotoxins | 1 | 14 | 515 | 775 |
| 732 | Neurotoxic agents | 1 | 14 | 515 | 775 |
| 732 | Oncogenes | 1 | 14 | 1132 | 1501 |
| 732 | Spectroscopy | 5 | 14 | 82 | 216 |
| 732 | Antibodies | 3 | 14 | 506 | 886 |
| 732 | Antigens | 3 | 14 | 644 | 1099 |
| 732 | Reproduction | 2 | 14 | 2046 | 2641 |
| 732 | Nerve regeneration | 1 | 14 | 515 | 775 |
| 744 | Photogrammetry | 2 | 13 | 1037 | 964 |
| 744 | Immunotoxicology | 1 | 13 | 580 | 714 |
| 744 | Shock Waves | 1 | 13 | 324 | 345 |
| 744 | Solutions | 1 | 13 | 702 | 748 |
| 744 | Heterocyclic compounds | 3 | 13 | 1009 | 1531 |
| 749 | Political Science | 2 | 12 | 1869 | 2013 |
| 749 | Philosophy | 9 | 12 | 942 | 1452 |
| 749 | Proteomics | 1 | 12 | 1387 | 1745 |
| 749 | Chemical Ecology | 2 | 12 | 623 | 1085 |
| 749 | Econometrics | 1 | 12 | 1938 | 1893 |
| 749 | Financial Engineering | 1 | 12 | 365 | 575 |
| 749 | infrared radiation | 4 | 12 | 506 | 1097 |
| 749 | Powder Metallurgy | 4 | 12 | 161 | 349 |
| 749 | Transnational corporations | 1 | 12 | 809 | 1057 |
| 749 | Waste management | 2 | 12 | 1646 | 2302 |
| 749 | Water Purification | 2 | 12 | 1362 | 1965 |
| 749 | Sintering | 4 | 12 | 25 | 84 |
| 749 | Infrared spectroscopy | 1 | 12 | 684 | 904 |
| 749 | breastfeeding | 2 | 12 | 575 | 987 |
| 749 | Ethnology | 2 | 12 | 1707 | 2100 |
| 749 | Planets | 1 | 12 | 1685 | 2049 |
| 749 | chromatin | 1 | 12 | 259 | 440 |
| 749 | Vegetation | 2 | 12 | 128 | 253 |
| 749 | vitamin C | 1 | 12 | 702 | 1015 |
| 749 | vitamin E | 1 | 12 | 702 | 1015 |
| 749 | phototherapy | 1 | 12 | 220 | 194 |
| 770 | Surveying | 1 | 11 | 265 | 251 |
| 770 | Cartography | 1 | 11 | 828 | 796 |
| 770 | Quality Management | 1 | 11 | 376 | 454 |
| 770 | Clinical Immunology | 1 | 11 | 1188 | 1476 |
| 770 | Plasma chemistry | 2 | 11 | 487 | 848 |
| 770 | solar power | 1 | 11 | 1265 | 1662 |
| 770 | Synchrotron Radiation | 1 | 11 | 603 | 677 |
| 770 | Cardiovascular diseases | 1 | 11 | 1779 | 1965 |
| 770 | Plasma polymerization | 2 | 11 | 320 | 584 |
| 770 | solar cells | 1 | 11 | 1336 | 1741 |
| 770 | Steroids | 2 | 11 | 994 | 1594 |
| 770 | Cement | 1 | 11 | 859 | 1114 |
| 782 | Education | 1 | 10 | 4633 | 4547 |
| 782 | Radiology | 5 | 10 | 908 | 1787 |
| 782 | Geriatrics | 2 | 10 | 2655 | 3461 |
| 782 | Nuclear Chemistry | 1 | 10 | 1550 | 1605 |
| 782 | Radiochemistry | 1 | 10 | 1475 | 1500 |
| 782 | cosmic rays | 5 | 10 | 312 | 812 |
| 782 | elder abuse | 2 | 10 | 366 | 803 |
| 782 | Probiotics | 1 | 10 | 425 | 696 |
| 782 | Family | 2 | 10 | 1151 | 1800 |
| 782 | pheromones | 1 | 10 | 761 | 1054 |
| 782 | Host-parasite interactions | 2 | 10 | 1214 | 1986 |
| 782 | family violence | 2 | 10 | 514 | 1023 |
| 782 | Informatics | 1 | 10 | 1262 | 1572 |
| 782 | Philippines | 1 | 10 | 246 | 348 |
| 796 | Zoology | 1 | 9 | 3016 | 3201 |
| 796 | Food Science | 4 | 9 | 129 | 616 |
| 796 | Paleoecology | 2 | 9 | 1128 | 1698 |
| 796 | Ceramics | 3 | 9 | 1417 | 2168 |
| 796 | Clinical Biochemistry | 1 | 9 | 1499 | 1778 |
| 796 | Biogeochemical cycles | 1 | 9 | 586 | 875 |
| 796 | Functional equations | 1 | 9 | 455 | 406 |
| 796 | Paleogeography | 2 | 9 | 1033 | 1558 |
| 796 | Behavioral research | 2 | 9 | 794 | 1402 |
| 796 | Autoantibodies | 1 | 9 | 735 | 1023 |
| 796 | Strategic planning | 1 | 9 | 1267 | 1629 |
| 796 | Autoimmunity | 1 | 9 | 886 | 1229 |
| 796 | Geobiology | 1 | 9 | 659 | 885 |
| 796 | animals | 1 | 9 | 1740 | 1975 |
| 796 | Alloys | 1 | 9 | 598 | 531 |
| 796 | Glass | 3 | 9 | 1011 | 1774 |
| 796 | Autoimmune diseases | 1 | 9 | 809 | 1147 |
| 796 | pottery | 3 | 9 | 957 | 1712 |
| 796 | amino acids | 1 | 9 | 965 | 1322 |
| 796 | antibiotics | 1 | 9 | 425 | 698 |
| 816 | Diabetes mellitus | 1 | 8 | 2119 | 2698 |
| 816 | Metabolic diseases | 1 | 8 | 2214 | 2801 |
| 816 | Enteral nutrition | 1 | 8 | 1067 | 1446 |
| 816 | Parenteral nutrition | 1 | 8 | 1208 | 1585 |
| 816 | Carbohydrates | 1 | 8 | 673 | 928 |
| 816 | Scandinavia | 1 | 8 | 957 | 1184 |
| 816 | Drug discovery | 1 | 8 | 469 | 719 |
| 816 | Australia | 1 | 8 | 2665 | 3033 |
| 816 | Egypt | 1 | 8 | 1125 | 1600 |
| 816 | Diabetes | 1 | 8 | 2143 | 2707 |
| 816 | bees | 1 | 8 | 658 | 865 |
| 827 | Civil Engineering | 1 | 7 | 2136 | 2246 |
| 827 | Discrete Mathematics | 9 | 7 | 122 | 619 |
| 827 | Biotransformation | 1 | 7 | 280 | 463 |
| 827 | Microprocessors | 1 | 7 | 1027 | 1317 |
| 827 | Adolescent Psychology | 1 | 7 | 1238 | 1590 |
| 827 | Histocompatibility Testing | 1 | 7 | 694 | 934 |
| 827 | Global warming | 3 | 7 | 124 | 414 |
| 827 | graph | 9 | 7 | 122 | 619 |
| 827 | plankton | 1 | 7 | 356 | 541 |
| 827 | biopolymers | 2 | 7 | 1278 | 2008 |
| 837 | Sustainable Architecture | 1 | 6 | 381 | 493 |
| 837 | Phytochemistry | 1 | 6 | 631 | 1031 |
| 837 | Power Electronics | 3 | 6 | 974 | 1680 |
| 837 | Social Stratification | 1 | 6 | 174 | 250 |
| 837 | Coastal zone management | 1 | 6 | 1076 | 1571 |
| 837 | Speech Perception | 2 | 6 | 430 | 818 |
| 837 | Energy Consumption | 1 | 6 | 704 | 1101 |
| 837 | auditory perception | 2 | 6 | 523 | 958 |
| 837 | Metallic Glasses | 1 | 6 | 731 | 1000 |
| 837 | drug resistance | 2 | 6 | 857 | 1640 |
| 837 | Phytoremediation | 1 | 6 | 631 | 1031 |
| 837 | micromechanics | 1 | 6 | 946 | 1245 |
| 837 | Fractional Calculus | 1 | 6 | 355 | 513 |
| 837 | Social mobility | 1 | 6 | 174 | 250 |
| 837 | environmental remediation | 1 | 6 | 750 | 1169 |
| 837 | Bioreactors | 1 | 6 | 631 | 1031 |
| 837 | Synthetic biology | 1 | 6 | 506 | 752 |
| 837 | Entrepreneurship | 1 | 6 | 1626 | 2236 |
| 837 | Knowledge | 1 | 6 | 715 | 794 |
| 837 | cell adhesion molecules | 1 | 6 | 368 | 668 |
| 837 | Marine resources | 1 | 6 | 1105 | 1607 |
| 837 | social conflict | 1 | 6 | 363 | 531 |
| 837 | Microbiota | 1 | 6 | 197 | 365 |
| 837 | Oral communication | 2 | 6 | 551 | 1054 |
| 837 | social status | 1 | 6 | 174 | 250 |
| 837 | Occupational mobility | 1 | 6 | 174 | 250 |
| 837 | Speech | 2 | 6 | 1000 | 1627 |
| 837 | Cell communication | 1 | 6 | 901 | 1333 |
| 837 | Meteorites | 1 | 6 | 1071 | 1449 |
| 866 | Stochastic Processes | 1 | 5 | 1440 | 1809 |
| 866 | Food Preservation | 1 | 5 | 1297 | 1732 |
| 866 | Social Issues | 1 | 5 | 468 | 713 |
| 866 | Fracture mechanics | 1 | 5 | 1790 | 2243 |
| 866 | Functional foods | 1 | 5 | 691 | 1108 |
| 866 | Travel | 1 | 5 | 1277 | 1757 |
| 866 | Electron Microscopy | 1 | 5 | 634 | 847 |
| 866 | pain management | 1 | 5 | 856 | 1146 |
| 866 | Fixed Point Theory | 2 | 5 | 376 | 648 |
| 866 | Ubiquitous computing | 2 | 5 | 396 | 756 |
| 866 | Cell cycle | 1 | 5 | 500 | 782 |
| 866 | isomerism | 1 | 5 | 627 | 949 |
| 866 | cell proliferation | 1 | 5 | 534 | 814 |
| 866 | infection | 1 | 5 | 1832 | 2439 |
| 866 | Bacterial infections | 1 | 5 | 1137 | 1659 |
| 866 | Social problems | 1 | 5 | 980 | 1378 |
| 866 | Biomolecules | 1 | 5 | 760 | 1181 |
| 866 | Phytotherapy | 3 | 5 | 647 | 1843 |
| 866 | Refractory materials | 1 | 5 | 269 | 312 |
| 866 | pain | 1 | 5 | 1593 | 2013 |
| 866 | Chirality | 1 | 5 | 627 | 949 |
| 866 | Gastrointestinal diseases | 1 | 5 | 948 | 1186 |
| 888 | Anatomy | 1 | 4 | 2396 | 2912 |
| 888 | Nuclear Energy | 1 | 4 | 1460 | 1749 |
| 888 | Software Maintenance | 1 | 4 | 401 | 586 |
| 888 | Morphology | 1 | 4 | 1374 | 1629 |
| 888 | Animal Behavior | 1 | 4 | 2280 | 3030 |
| 888 | preventive medicine | 2 | 4 | 1167 | 2116 |
| 888 | Immunochemistry | 1 | 4 | 1332 | 1824 |
| 888 | Ethology | 1 | 4 | 1820 | 2504 |
| 888 | Drug delivery devices | 1 | 4 | 473 | 827 |
| 888 | Employee selection | 1 | 4 | 242 | 483 |
| 888 | Risk | 1 | 4 | 842 | 1229 |
| 888 | nuclear power | 1 | 4 | 725 | 881 |
| 888 | Electromagnetic fields | 1 | 4 | 721 | 879 |
| 888 | textile fibers | 1 | 4 | 796 | 1155 |
| 888 | Uncertainty | 1 | 4 | 337 | 508 |
| 888 | Marine algae | 1 | 4 | 247 | 454 |
| 904 | Computer Engineering | 2 | 3 | 1255 | 2234 |
| 904 | Industrial Organization | 1 | 3 | 570 | 860 |
| 904 | Hydraulic Engineering | 1 | 3 | 1241 | 1641 |
| 904 | Psycholinguistics | 1 | 3 | 1321 | 1833 |
| 904 | Process Control | 1 | 3 | 1467 | 2059 |
| 904 | Crystallization | 2 | 3 | 607 | 1042 |
| 904 | Antibacterial agents | 1 | 3 | 935 | 1445 |
| 904 | Developmental Neurobiology | 1 | 3 | 893 | 1234 |
| 904 | acupuncture | 3 | 3 | 211 | 510 |
| 904 | Massage therapy | 3 | 3 | 42 | 71 |
| 904 | visualization | 2 | 3 | 1559 | 2091 |
| 904 | X-ray crystallography | 2 | 3 | 595 | 976 |
| 904 | ovary | 1 | 3 | 381 | 690 |
| 904 | geological modeling | 1 | 3 | 939 | 1416 |
| 904 | Social behavior | 1 | 3 | 1710 | 2329 |
| 904 | Algal blooms | 1 | 3 | 460 | 774 |
| 904 | Cyanobacteria | 1 | 3 | 460 | 774 |
| 904 | Nanotubes | 1 | 3 | 422 | 731 |
| 904 | Pregnancy | 1 | 3 | 1251 | 1815 |
| 904 | microalgae | 1 | 3 | 460 | 774 |
| 924 | Logic | 1 | 2 | 727 | 929 |
| 924 | Hydrogeology | 2 | 2 | 794 | 1577 |
| 924 | Sociolinguistics | 1 | 2 | 778 | 1097 |
| 924 | Evolutionary Genetics | 1 | 2 | 1124 | 1724 |
| 924 | Clinical Pharmacology | 1 | 2 | 1569 | 2169 |
| 924 | Molecular Epidemiology | 1 | 2 | 1124 | 1724 |
| 924 | Pharmacokinetics | 1 | 2 | 1240 | 1824 |
| 924 | Agricultural Biotechnology | 1 | 2 | 579 | 808 |
| 924 | Statistical Mechanics | 2 | 2 | 751 | 1284 |
| 924 | Critical thinking | 1 | 2 | 86 | 114 |
| 924 | Logical Positivism | 1 | 2 | 51 | 44 |
| 924 | Wireless Communication | 1 | 2 | 832 | 1292 |
| 924 | Marine invertebrates | 1 | 2 | 442 | 713 |
| 924 | Cognitive neuroscience | 1 | 2 | 1334 | 1888 |
| 924 | Soft Condensed Matter | 1 | 2 | 1478 | 2002 |
| 924 | teratogenic agents | 1 | 2 | 480 | 925 |
| 924 | Semiotics | 2 | 2 | 508 | 833 |
| 924 | Neuroplasticity | 1 | 2 | 504 | 863 |
| 924 | carcinogens | 1 | 2 | 1315 | 1912 |
| 924 | Capital market | 1 | 2 | 810 | 1265 |
| 924 | disease vectors | 2 | 2 | 1065 | 1987 |
| 924 | baking | 1 | 2 | 332 | 596 |
| 924 | infrared technology | 1 | 2 | 371 | 516 |
| 924 | Forest genetics | 1 | 2 | 481 | 764 |
| 924 | Zoonoses | 2 | 2 | 350 | 914 |
| 949 | Marine Ecology | 1 | 1 | 1101 | 1640 |
| 949 | Environmental Ethics | 1 | 1 | 353 | 589 |
| 949 | Fluid Dynamics | 1 | 1 | 1544 | 2121 |
| 949 | Telecommunications | 1 | 1 | 1402 | 2057 |
| 949 | Sedimentology | 1 | 1 | 970 | 1512 |
| 949 | Quantum Chemistry | 1 | 1 | 326 | 530 |
| 949 | Geothermal Energy | 1 | 1 | 468 | 839 |
| 949 | Organizational learning | 1 | 1 | 991 | 1843 |
| 949 | Heterocyclic chemistry | 1 | 1 | 1000 | 1532 |
| 949 | health behavior | 1 | 1 | 1279 | 1943 |
| 949 | Multivariate Analysis | 1 | 1 | 870 | 1256 |
| 949 | Medical Ethics | 1 | 1 | 1616 | 2289 |
| 949 | Ecosystem management | 1 | 1 | 1083 | 1674 |
| 949 | Genetic databases | 1 | 1 | 120 | 348 |
| 949 | Health | 2 | 1 | 2268 | 3939 |
| 949 | Knowledge management | 1 | 1 | 1029 | 1863 |
| 949 | Access to Information | 1 | 1 | 469 | 1055 |
| 949 | Art and Science | 1 | 1 | 79 | 97 |
| 949 | Child psychology | 1 | 1 | 1877 | 2639 |
| 949 | concepts | 1 | 1 | 261 | 451 |
| 949 | Iron | 1 | 1 | 488 | 755 |
| 949 | Mitochondrial DNA | 2 | 1 | 268 | 755 |
| 949 | Classification | 1 | 1 | 550 | 891 |
| 949 | Imaging systems | 2 | 1 | 1043 | 2006 |
| 949 | Cell metabolism | 1 | 1 | 984 | 1553 |
| 949 | Information dissemination | 1 | 1 | 469 | 1055 |
| 975 | Arts | 1 | 0 | 785 | 1265 |
| 975 | Literature | 3 | 0 | 806 | 1288 |
| 975 | Rural Development | 2 | 0 | 637 | 1472 |
| 975 | Plant Taxonomy | 1 | 0 | 627 | 1006 |
| 975 | History of Medicine | 1 | 0 | 761 | 976 |
| 975 | Integrated Optics | 1 | 0 | 165 | 368 |
| 975 | philology | 1 | 0 | 870 | 926 |
| 975 | Food habits | 1 | 0 | 118 | 317 |
| 975 | men | 1 | 0 | 594 | 1102 |
| 975 | Approximation Theory | 2 | 0 | 571 | 1067 |
| 975 | freshwater biology | 1 | 0 | 1396 | 2077 |
| 975 | environmental issues | 1 | 0 | 770 | 1445 |
| 975 | Aquatic ecology | 1 | 0 | 1356 | 2001 |