| 1 | Chemistry | 1,152 | 54.2K | 339 | 370 |
| 2 | Materials | 499 | 23.1K | 334 | 311 |
| 3 | Analytical Chemistry | 624 | 19.1K | 66 | 98 |
| 4 | Catalysis | 392 | 17.9K | 165 | 192 |
| 5 | Nanotechnology | 365 | 14.9K | 284 | 356 |
| 6 | Physics | 695 | 14.8K | 548 | 991 |
| 7 | Materials Science | 317 | 13.2K | 269 | 278 |
| 8 | Chemical Engineering | 280 | 11.7K | 339 | 339 |
| 9 | Biocompatible Materials | 236 | 11.2K | 267 | 306 |
| 10 | Biology | 220 | 11.0K | 885 | 1004 |
| 11 | Nanostructured Materials | 211 | 8.5K | 191 | 200 |
| 12 | Optical materials | 173 | 8.4K | 150 | 160 |
| 13 | Science | 227 | 7.7K | 951 | 1290 |
| 14 | Colloids | 253 | 7.6K | 233 | 318 |
| 15 | nanoscience | 147 | 6.4K | 212 | 287 |
| 16 | Pollution | 136 | 6.0K | 630 | 712 |
| 17 | Biotechnology | 180 | 5.9K | 550 | 738 |
| 18 | Surface Chemistry | 224 | 5.8K | 271 | 377 |
| 19 | Food | 154 | 5.7K | 158 | 175 |
| 20 | Molecular Biology | 222 | 5.6K | 867 | 1129 |
| 21 | actuators | 131 | 5.4K | 98 | 98 |
| 21 | transducers | 131 | 5.4K | 98 | 98 |
| 23 | Mathematics | 439 | 5.1K | 382 | 464 |
| 24 | Biochemical Engineering | 142 | 5.0K | 283 | 509 |
| 25 | Bioengineering | 126 | 4.8K | 433 | 568 |
| 26 | Biomedical Engineering | 174 | 4.8K | 439 | 524 |
| 27 | Agricultural Chemistry | 94 | 4.6K | 204 | 152 |
| 28 | Biochemistry | 241 | 4.4K | 1055 | 1421 |
| 29 | Polymers | 180 | 4.4K | 520 | 594 |
| 30 | Nutrition | 118 | 4.3K | 464 | 489 |
| 31 | Electrochemistry | 148 | 4.3K | 538 | 438 |
| 32 | Medicine | 162 | 4.3K | 1239 | 1414 |
| 33 | food technology | 125 | 4.1K | 187 | 191 |
| 34 | Energy Conversion | 42 | 4.1K | 196 | 190 |
| 35 | Environmental Health | 103 | 4.1K | 709 | 740 |
| 36 | China | 268 | 4.0K | 90 | 129 |
| 37 | Environment | 77 | 3.8K | 844 | 973 |
| 38 | Nanoparticles | 84 | 3.6K | 132 | 134 |
| 39 | Ecology | 125 | 3.6K | 878 | 1179 |
| 40 | Research | 161 | 3.5K | 1056 | 1262 |
| 41 | polymerization | 130 | 3.5K | 529 | 560 |
| 42 | Information Science | 105 | 3.4K | 156 | 195 |
| 43 | Environmental Chemistry | 23 | 3.4K | 541 | 283 |
| 44 | Environmental Management | 88 | 3.4K | 257 | 345 |
| 45 | Biosensors | 65 | 3.4K | 97 | 126 |
| 46 | Bioelectronics | 58 | 3.2K | 74 | 111 |
| 47 | fuel cells | 42 | 3.1K | 197 | 176 |
| 48 | Artificial Intelligence | 127 | 2.9K | 311 | 519 |
| 49 | Environmental Geology | 93 | 2.8K | 47 | 78 |
| 50 | environmental pollution | 80 | 2.8K | 700 | 809 |
| 51 | Green Chemistry | 61 | 2.8K | 224 | 264 |
| 52 | Statistical physics | 174 | 2.8K | 429 | 601 |
| 53 | Botany | 101 | 2.8K | 642 | 780 |
| 54 | Psychology | 192 | 2.7K | 480 | 714 |
| 55 | Optics | 151 | 2.6K | 565 | 620 |
| 56 | Magnetic Materials | 63 | 2.4K | 161 | 129 |
| 57 | Toxicology | 70 | 2.4K | 856 | 846 |
| 58 | Nuclear Physics | 171 | 2.3K | 744 | 991 |
| 59 | Photonics | 74 | 2.3K | 276 | 378 |
| 60 | Ceramics | 56 | 2.2K | 166 | 128 |
| 61 | Ultrasonics | 96 | 2.2K | 41 | 94 |
| 62 | Earth Sciences | 50 | 2.2K | 724 | 546 |
| 63 | personality | 47 | 2.2K | 303 | 330 |
| 64 | Spectrum analysis | 114 | 2.2K | 649 | 940 |
| 65 | Psychophysiology | 122 | 2.2K | 360 | 613 |
| 66 | Geomorphology | 83 | 2.1K | 94 | 199 |
| 67 | Hydrology | 61 | 2.1K | 365 | 382 |
| 68 | Glass | 48 | 2.0K | 139 | 127 |
| 68 | pottery | 48 | 2.0K | 138 | 125 |
| 70 | Cell Biology | 41 | 2.0K | 984 | 1028 |
| 71 | Environmental monitoring | 56 | 2.0K | 689 | 833 |
| 72 | Biophysics | 99 | 2.0K | 968 | 1240 |
| 73 | environmental protection | 46 | 1.9K | 685 | 648 |
| 74 | Carbon | 23 | 1.9K | 341 | 256 |
| 75 | Quality Control | 32 | 1.9K | 277 | 127 |
| 76 | Soil Science | 70 | 1.9K | 207 | 281 |
| 77 | mathematical analysis | 135 | 1.8K | 177 | 220 |
| 78 | Food additives | 33 | 1.8K | 159 | 153 |
| 79 | hydrocolloids | 30 | 1.8K | 114 | 131 |
| 80 | Solid State Chemistry | 88 | 1.8K | 311 | 344 |
| 81 | Signal Processing | 54 | 1.8K | 528 | 548 |
| 82 | Cognitive Science | 42 | 1.7K | 244 | 277 |
| 83 | Composite Materials | 40 | 1.7K | 687 | 698 |
| 84 | Fuzzy systems | 118 | 1.7K | 25 | 49 |
| 85 | Ceramic materials | 38 | 1.7K | 201 | 129 |
| 86 | food handling | 30 | 1.7K | 102 | 63 |
| 87 | Environmental Toxicology | 44 | 1.6K | 397 | 458 |
| 88 | Neural circuitry | 52 | 1.6K | 228 | 313 |
| 89 | Solid State Physics | 85 | 1.6K | 839 | 889 |
| 90 | Molecular Spectroscopy | 65 | 1.6K | 151 | 146 |
| 91 | Signal Transduction | 4 | 1.6K | 1106 | 313 |
| 92 | Neurology | 60 | 1.6K | 1054 | 1227 |
| 93 | Systems Engineering | 62 | 1.6K | 228 | 272 |
| 94 | Sustainable Engineering | 38 | 1.6K | 270 | 296 |
| 95 | Chemical analysis | 67 | 1.6K | 40 | 73 |
| 96 | Environmental Engineering | 27 | 1.6K | 1150 | 869 |
| 97 | Geography | 77 | 1.5K | 267 | 401 |
| 98 | Plants | 48 | 1.5K | 358 | 532 |
| 99 | Microbiology | 61 | 1.5K | 1349 | 1705 |
| 99 | Quality of life | 25 | 1.5K | 305 | 228 |
| 101 | Nanostructures | 67 | 1.5K | 149 | 419 |
| 102 | Environmental Policy | 33 | 1.4K | 825 | 861 |
| 103 | Genomics | 62 | 1.4K | 494 | 672 |
| 104 | Environmental pollutants | 42 | 1.4K | 367 | 411 |
| 105 | Image Processing | 50 | 1.4K | 406 | 506 |
| 106 | Pharmacology | 53 | 1.4K | 1200 | 1319 |
| 107 | Behavior | 44 | 1.3K | 717 | 917 |
| 108 | Automation | 39 | 1.3K | 531 | 604 |
| 109 | Neuropsychology | 60 | 1.3K | 405 | 551 |
| 110 | Educational Technology | 59 | 1.3K | 103 | 194 |
| 111 | Social Sciences | 41 | 1.3K | 752 | 527 |
| 112 | environmental indicators | 38 | 1.3K | 90 | 143 |
| 113 | Ultrasound | 66 | 1.3K | 45 | 92 |
| 114 | Organic Chemistry | 68 | 1.3K | 637 | 811 |
| 115 | Technology | 41 | 1.3K | 915 | 812 |
| 116 | Biomass Energy | 10 | 1.2K | 1324 | 755 |
| 117 | Water | 17 | 1.2K | 1003 | 813 |
| 118 | Engineering | 56 | 1.2K | 818 | 805 |
| 119 | Sociology | 36 | 1.2K | 720 | 627 |
| 120 | pollutants | 30 | 1.2K | 391 | 401 |
| 121 | environmental exposure | 33 | 1.2K | 351 | 359 |
| 122 | Social Change | 2 | 1.2K | 1261 | 238 |
| 123 | Education | 55 | 1.2K | 709 | 693 |
| 124 | Brain | 46 | 1.1K | 662 | 788 |
| 125 | United States | 53 | 1.1K | 1039 | 1119 |
| 126 | Neurophysiology | 59 | 1.1K | 585 | 871 |
| 127 | Economic History | 64 | 1.1K | 526 | 612 |
| 128 | Ultrasonic Imaging | 56 | 1.1K | 11 | 30 |
| 129 | human behavior | 32 | 1.1K | 623 | 823 |
| 130 | Industrial Engineering | 35 | 1.1K | 386 | 379 |
| 131 | computer networks | 52 | 1.0K | 415 | 593 |
| 132 | Energy Policy | 15 | 1.0K | 1217 | 961 |
| 133 | sanitation | 8 | 1.0K | 853 | 629 |
| 134 | Tourism | 20 | 978 | 492 | 500 |
| 134 | Chromosome mapping | 29 | 978 | 406 | 481 |
| 134 | gene mapping | 29 | 978 | 466 | 556 |
| 137 | Electrochemical Analysis | 25 | 954 | 449 | 324 |
| 138 | Public Health | 43 | 952 | 1213 | 1445 |
| 139 | Sonochemistry | 30 | 944 | 49 | 116 |
| 140 | Luminescence | 55 | 937 | 94 | 116 |
| 141 | internet | 43 | 935 | 214 | 372 |
| 142 | Internet of Things | 41 | 929 | 171 | 299 |
| 143 | Cytology | 24 | 928 | 1355 | 1415 |
| 144 | biological evolution | 28 | 925 | 591 | 763 |
| 145 | Organometallic chemistry | 51 | 923 | 265 | 299 |
| 146 | Nonlinear functional analysis | 49 | 917 | 94 | 114 |
| 147 | Crystal growth | 32 | 898 | 163 | 181 |
| 148 | Mathematical Physics | 83 | 897 | 493 | 743 |
| 149 | Solitons | 42 | 894 | 88 | 151 |
| 149 | Fractals | 42 | 894 | 89 | 151 |
| 149 | Chaos | 42 | 894 | 88 | 151 |
| 152 | miniaturization | 22 | 886 | 576 | 673 |
| 153 | Information Technology | 51 | 884 | 276 | 640 |
| 154 | Semiconductors | 59 | 865 | 284 | 358 |
| 155 | plant molecular biology | 25 | 852 | 434 | 635 |
| 156 | Molecular evolution | 23 | 843 | 421 | 488 |
| 157 | Functional Analysis | 33 | 839 | 298 | 238 |
| 158 | Physiology | 38 | 825 | 1082 | 1328 |
| 159 | Plant Ecology | 25 | 815 | 545 | 646 |
| 160 | Paleoclimatology | 26 | 794 | 302 | 362 |
| 160 | lasers | 61 | 794 | 321 | 471 |
| 162 | Economics | 47 | 792 | 1099 | 1182 |
| 162 | Energy Storage | 27 | 792 | 272 | 365 |
| 162 | Computational Biology | 44 | 792 | 462 | 757 |
| 165 | Meteorology | 32 | 785 | 588 | 795 |
| 166 | Nanochemistry | 35 | 784 | 121 | 139 |
| 167 | free radicals | 12 | 757 | 620 | 555 |
| 168 | Biodiversity conservation | 29 | 734 | 422 | 781 |
| 169 | Condensed Matter | 60 | 731 | 851 | 1137 |
| 170 | Wireless Communication Systems | 32 | 720 | 674 | 707 |
| 170 | dietary supplements | 21 | 720 | 128 | 139 |
| 170 | Happiness | 13 | 720 | 68 | 54 |
| 173 | Developing countries | 24 | 718 | 631 | 594 |
| 174 | Electronics | 51 | 713 | 780 | 1004 |
| 175 | Genetics | 22 | 712 | 1169 | 1349 |
| 176 | Physical Chemistry | 38 | 711 | 543 | 760 |
| 177 | management | 14 | 710 | 1637 | 1364 |
| 178 | Telecommunication | 36 | 701 | 672 | 853 |
| 179 | Bioinformatics | 35 | 699 | 443 | 671 |
| 180 | economic policy | 29 | 695 | 645 | 497 |
| 181 | Cognitive neuroscience | 22 | 694 | 313 | 421 |
| 182 | Microelectronics | 16 | 681 | 718 | 694 |
| 183 | energy resources | 10 | 674 | 686 | 689 |
| 184 | Animal Behavior | 23 | 672 | 619 | 752 |
| 185 | Control Theory | 39 | 668 | 400 | 491 |
| 186 | clay | 10 | 666 | 344 | 215 |
| 187 | Operations Research | 24 | 655 | 776 | 786 |
| 188 | Asia | 37 | 647 | 489 | 514 |
| 189 | Adolescent | 31 | 642 | 487 | 597 |
| 190 | Molecular Genetics | 17 | 634 | 688 | 743 |
| 191 | Pharmaceutical Technology | 23 | 632 | 424 | 500 |
| 191 | catalytic activity | 23 | 632 | 122 | 191 |
| 193 | Psychiatry | 41 | 631 | 1002 | 1435 |
| 194 | Nonlinear Dynamics | 44 | 629 | 524 | 738 |
| 195 | Economic Development | 14 | 626 | 624 | 592 |
| 196 | Photochemistry | 26 | 621 | 412 | 521 |
| 196 | Photobiology | 26 | 621 | 223 | 337 |
| 198 | Phylogeny | 16 | 605 | 268 | 342 |
| 199 | Evolutionary Computation | 20 | 601 | 80 | 207 |
| 200 | Liquid Crystals | 33 | 598 | 176 | 105 |
| 201 | Numerical Analysis | 51 | 595 | 406 | 620 |
| 202 | Geology | 25 | 586 | 1084 | 1087 |
| 203 | Differential Equations | 25 | 585 | 264 | 246 |
| 204 | Diet | 10 | 575 | 953 | 888 |
| 205 | Sustainable Development | 14 | 564 | 765 | 762 |
| 206 | Cybernetics | 20 | 562 | 509 | 612 |
| 207 | Chromatographic analysis | 41 | 547 | 301 | 490 |
| 208 | natural disasters | 11 | 538 | 539 | 409 |
| 209 | health planning | 39 | 537 | 395 | 592 |
| 210 | Land use | 14 | 536 | 387 | 375 |
| 211 | bioluminescence | 35 | 534 | 9 | 10 |
| 212 | Nanophotonics | 10 | 532 | 118 | 80 |
| 213 | Educational Psychology | 28 | 528 | 414 | 559 |
| 214 | Analytical Biochemistry | 43 | 521 | 218 | 541 |
| 214 | Molecular structure | 38 | 521 | 507 | 812 |
| 216 | Paleoecology | 15 | 520 | 437 | 442 |
| 216 | Food Microbiology | 16 | 520 | 406 | 574 |
| 216 | Paleogeography | 15 | 520 | 382 | 403 |
| 219 | Plant physiology | 28 | 514 | 643 | 1063 |
| 220 | Climate change | 5 | 510 | 708 | 773 |
| 220 | Eutrophication | 5 | 510 | 678 | 768 |
| 222 | Social behavior | 19 | 505 | 382 | 485 |
| 223 | water supply | 2 | 503 | 998 | 394 |
| 224 | Teaching | 26 | 499 | 470 | 539 |
| 225 | Engineering Geology | 8 | 497 | 838 | 548 |
| 226 | Diagnostic Imaging | 17 | 495 | 641 | 631 |
| 227 | Information Theory | 43 | 493 | 235 | 506 |
| 228 | Epidemiology | 32 | 486 | 953 | 1316 |
| 229 | Virology | 1 | 480 | 2989 | 1399 |
| 230 | Agriculture | 23 | 479 | 593 | 760 |
| 231 | Swarm Intelligence | 18 | 471 | 32 | 94 |
| 232 | Metallurgy | 21 | 470 | 802 | 825 |
| 232 | Chromatography | 34 | 470 | 289 | 470 |
| 234 | reasoning | 25 | 469 | 25 | 60 |
| 235 | Computer Vision | 12 | 461 | 501 | 541 |
| 235 | soil management | 11 | 461 | 209 | 230 |
| 235 | tillage | 11 | 461 | 148 | 191 |
| 235 | Plant cells | 10 | 461 | 574 | 774 |
| 239 | Neuroplasticity | 4 | 457 | 168 | 29 |
| 240 | Bioorganic chemistry | 21 | 456 | 1068 | 1261 |
| 241 | Electrophoresis | 26 | 453 | 402 | 588 |
| 242 | Food Preservation | 28 | 451 | 93 | 122 |
| 243 | Child welfare | 18 | 447 | 342 | 324 |
| 244 | Remote Sensing | 15 | 443 | 565 | 362 |
| 245 | Nervous system | 22 | 441 | 794 | 1089 |
| 245 | biopolymers | 14 | 441 | 483 | 485 |
| 247 | Creativity | 21 | 440 | 16 | 64 |
| 248 | Natural history | 26 | 422 | 983 | 2447 |
| 249 | neuronal plasticity | 2 | 419 | 117 | 19 |
| 250 | Humanities | 24 | 417 | 341 | 300 |
| 251 | Dynamics | 29 | 416 | 355 | 440 |
| 252 | Population | 7 | 415 | 522 | 332 |
| 253 | Water pollution | 17 | 414 | 1143 | 1461 |
| 254 | Mental Disorders | 16 | 412 | 1076 | 1240 |
| 255 | Computational Complexity | 30 | 408 | 110 | 163 |
| 256 | Zeolites | 14 | 407 | 329 | 409 |
| 257 | Climatology | 29 | 400 | 465 | 843 |
| 258 | Pharmaceutical Chemistry | 21 | 395 | 1361 | 1653 |
| 259 | Radiation Protection | 12 | 393 | 191 | 60 |
| 260 | radiation monitoring | 11 | 390 | 178 | 57 |
| 261 | Solar Energy | 16 | 387 | 608 | 908 |
| 262 | Renewable Energy Sources | 6 | 385 | 1974 | 1867 |
| 263 | Medical Laboratory Science | 10 | 384 | 996 | 1055 |
| 264 | Industrial Microbiology | 11 | 382 | 909 | 1016 |
| 265 | Soft Condensed Matter | 10 | 381 | 557 | 482 |
| 266 | atmosphere | 12 | 379 | 269 | 286 |
| 267 | Radiation dosimetry | 10 | 377 | 150 | 33 |
| 268 | Biometrics | 16 | 374 | 401 | 412 |
| 269 | Bioinorganic chemistry | 12 | 372 | 714 | 627 |
| 269 | Intelligent Control Systems | 43 | 372 | 88 | 177 |
| 271 | Metals | 12 | 360 | 988 | 938 |
| 272 | Geophysics | 20 | 359 | 1356 | 1661 |
| 273 | sustainability | 4 | 357 | 723 | 486 |
| 273 | Entropy | 25 | 357 | 168 | 240 |
| 275 | Social work | 13 | 356 | 615 | 466 |
| 276 | Physical Geography | 31 | 354 | 39 | 159 |
| 277 | Environmental Law | 5 | 349 | 798 | 768 |
| 278 | Oncology | 15 | 348 | 777 | 1303 |
| 279 | Cognition | 36 | 347 | 450 | 846 |
| 279 | Cancer | 11 | 347 | 1334 | 1502 |
| 281 | Zoology | 32 | 346 | 729 | 983 |
| 281 | Transportation | 14 | 346 | 704 | 779 |
| 283 | Radiochemistry | 14 | 344 | 355 | 250 |
| 284 | System analysis | 27 | 340 | 674 | 1075 |
| 285 | Thermodynamics | 36 | 339 | 164 | 302 |
| 285 | Thermochemistry | 36 | 339 | 59 | 169 |
| 287 | Nuclear Chemistry | 13 | 338 | 457 | 305 |
| 288 | Neurochemistry | 14 | 334 | 1035 | 1182 |
| 288 | Interfaces | 15 | 334 | 37 | 52 |
| 290 | Child Development | 19 | 330 | 681 | 966 |
| 291 | Thin Films | 15 | 329 | 109 | 96 |
| 291 | Microstructure | 20 | 329 | 161 | 164 |
| 293 | Endocrinology | 12 | 311 | 1243 | 1472 |
| 293 | Biodiversity | 26 | 311 | 592 | 1121 |
| 295 | Developmental Biology | 11 | 307 | 886 | 1130 |
| 296 | Atmospheric Physics | 14 | 304 | 655 | 852 |
| 296 | Mass Spectrometry | 6 | 304 | 773 | 533 |
| 298 | Forest Ecology | 11 | 294 | 495 | 582 |
| 299 | Plant Morphology | 24 | 293 | 82 | 173 |
| 300 | Urban Planning | 3 | 291 | 377 | 182 |
| 300 | community development | 3 | 291 | 587 | 205 |
| 300 | Housing | 3 | 291 | 478 | 215 |
| 300 | drug development | 4 | 291 | 675 | 661 |
| 304 | adolescence | 19 | 290 | 287 | 498 |
| 304 | Energy Harvesting | 7 | 290 | 244 | 389 |
| 306 | Plant diseases | 17 | 287 | 781 | 936 |
| 307 | Radiation | 13 | 286 | 989 | 919 |
| 307 | Chemical industry | 17 | 286 | 424 | 454 |
| 309 | Medical innovations | 3 | 284 | 804 | 737 |
| 310 | pigments | 15 | 282 | 260 | 378 |
| 311 | soil conservation | 16 | 279 | 175 | 374 |
| 312 | Forest Management | 9 | 277 | 520 | 559 |
| 313 | Pharmacognosy | 9 | 275 | 1038 | 1153 |
| 313 | coal | 8 | 275 | 998 | 1090 |
| 315 | Insects | 63 | 273 | 122 | 624 |
| 316 | particles | 11 | 269 | 382 | 398 |
| 317 | Public Policy | 6 | 263 | 1165 | 911 |
| 317 | Entomology | 67 | 263 | 328 | 972 |
| 319 | Medicinal plants | 8 | 262 | 773 | 916 |
| 319 | gastrointestinal tract | 2 | 262 | 390 | 261 |
| 321 | Immunology | 11 | 255 | 1432 | 1700 |
| 322 | Telecommunication Systems | 22 | 252 | 435 | 701 |
| 323 | Superconductors | 23 | 251 | 278 | 341 |
| 324 | Organometallic compounds | 16 | 249 | 519 | 697 |
| 325 | Physical organic chemistry | 18 | 248 | 528 | 761 |
| 326 | Astronomy | 16 | 246 | 1255 | 1616 |
| 326 | Health Policy | 4 | 246 | 1657 | 1043 |
| 326 | sexual behavior | 7 | 246 | 392 | 360 |
| 329 | Population Genetics | 21 | 245 | 384 | 790 |
| 330 | Geriatrics | 14 | 244 | 1173 | 1356 |
| 330 | Software Engineering | 8 | 244 | 592 | 528 |
| 330 | soil microbiology | 9 | 244 | 788 | 1154 |
| 333 | Sports Medicine | 11 | 242 | 1260 | 1182 |
| 334 | Social Psychology | 26 | 238 | 678 | 1291 |
| 335 | Mental illness | 5 | 236 | 1249 | 1162 |
| 336 | enzymes | 8 | 234 | 850 | 903 |
| 337 | educational innovations | 10 | 233 | 186 | 276 |
| 338 | Oxidation-reduction | 6 | 232 | 507 | 698 |
| 339 | Plant genetic engineering | 8 | 231 | 457 | 581 |
| 340 | Health Services Administration | 2 | 227 | 1198 | 482 |
| 340 | commerce | 10 | 227 | 776 | 882 |
| 342 | food industry | 21 | 226 | 96 | 261 |
| 343 | Genetic engineering | 17 | 225 | 756 | 1248 |
| 344 | Multimedia Systems | 27 | 224 | 445 | 892 |
| 345 | Catalysts | 14 | 220 | 194 | 325 |
| 346 | Computational Intelligence | 13 | 216 | 177 | 271 |
| 346 | Ferroelectricity | 20 | 216 | 323 | 388 |
| 348 | bioclimatology | 19 | 215 | 185 | 492 |
| 349 | cell physiology | 8 | 213 | 795 | 1030 |
| 350 | Child psychology | 14 | 212 | 604 | 964 |
| 350 | Soil ecology | 7 | 212 | 447 | 560 |
| 352 | Developmental Psychology | 17 | 210 | 363 | 675 |
| 352 | Plant Biotechnology | 8 | 210 | 366 | 459 |
| 354 | Mechatronics | 11 | 209 | 371 | 532 |
| 354 | Human-Computer Interaction | 18 | 209 | 456 | 944 |
| 354 | Mental Health Services | 3 | 209 | 1051 | 614 |
| 354 | Business Ethics | 1 | 209 | 1539 | 961 |
| 354 | Edible plants | 3 | 209 | 199 | 94 |
| 359 | Water quality management | 9 | 208 | 991 | 956 |
| 360 | Animal welfare | 1 | 206 | 514 | 134 |
| 361 | Computer Science | 27 | 204 | 457 | 958 |
| 361 | Surface-Active Agents | 10 | 204 | 495 | 822 |
| 361 | Surface properties | 10 | 204 | 541 | 893 |
| 364 | Pathology | 7 | 202 | 1095 | 1189 |
| 364 | Environmental Microbiology | 7 | 202 | 817 | 1110 |
| 364 | behavioral medicine | 9 | 202 | 637 | 1000 |
| 364 | drug toxicity | 10 | 202 | 103 | 240 |
| 368 | Electrical Engineering | 15 | 201 | 1500 | 1440 |
| 369 | Development | 7 | 198 | 453 | 593 |
| 370 | Marine Biology | 8 | 196 | 1530 | 1641 |
| 370 | solar power | 6 | 196 | 531 | 655 |
| 370 | solar cells | 6 | 196 | 586 | 699 |
| 370 | Recycling | 4 | 196 | 482 | 699 |
| 374 | Adolescent Psychology | 9 | 195 | 422 | 530 |
| 375 | Japan | 17 | 193 | 557 | 825 |
| 376 | Ethology | 2 | 192 | 1503 | 1146 |
| 377 | Positive Psychology | 7 | 191 | 66 | 157 |
| 377 | Sound | 15 | 191 | 389 | 503 |
| 379 | Superconductivity | 15 | 190 | 134 | 183 |
| 380 | economic indicators | 6 | 189 | 38 | 21 |
| 380 | Sustainable agriculture | 5 | 189 | 494 | 427 |
| 382 | Pediatrics | 8 | 188 | 1183 | 1423 |
| 383 | Recombinant DNA | 13 | 187 | 632 | 938 |
| 384 | Oxidative stress | 5 | 185 | 607 | 862 |
| 384 | animals | 16 | 185 | 420 | 593 |
| 384 | Light | 2 | 185 | 1010 | 812 |
| 384 | thinking | 13 | 185 | 52 | 166 |
| 388 | human development | 9 | 184 | 425 | 583 |
| 389 | Conservation Biology | 20 | 182 | 309 | 814 |
| 389 | Marine Pollution | 7 | 182 | 776 | 957 |
| 391 | Technological Innovations | 10 | 181 | 432 | 686 |
| 391 | city planning | 8 | 181 | 932 | 986 |
| 393 | Psycholinguistics | 18 | 180 | 333 | 692 |
| 394 | Environmental Geochemistry | 11 | 179 | 117 | 237 |
| 394 | Minerals | 11 | 179 | 249 | 420 |
| 396 | Urban Policy | 6 | 178 | 556 | 592 |
| 396 | Radio | 10 | 178 | 751 | 978 |
| 396 | Radio frequency | 10 | 178 | 212 | 267 |
| 399 | Quantum electronics | 14 | 177 | 703 | 897 |
| 399 | Post-traumatic stress disorder | 2 | 177 | 865 | 533 |
| 401 | Landscape Ecology | 2 | 176 | 552 | 365 |
| 401 | elder abuse | 3 | 176 | 299 | 205 |
| 403 | Combinatorial chemistry | 5 | 175 | 516 | 599 |
| 404 | Youth | 16 | 173 | 225 | 500 |
| 405 | Computer Graphics | 16 | 171 | 676 | 1054 |
| 405 | Clinical Chemistry | 12 | 171 | 1201 | 1732 |
| 407 | Bereavement | 1 | 167 | 402 | 65 |
| 408 | Early Childhood Education | 10 | 166 | 276 | 313 |
| 408 | ecosystem | 7 | 166 | 805 | 1098 |
| 410 | Archaeology | 8 | 165 | 777 | 724 |
| 410 | Comparative Physiology | 8 | 165 | 453 | 579 |
| 412 | Cytogenetics | 3 | 161 | 1113 | 1028 |
| 412 | child abuse | 11 | 161 | 365 | 640 |
| 414 | Mountains | 9 | 160 | 127 | 111 |
| 415 | Algebra | 29 | 159 | 447 | 618 |
| 415 | Molecules | 29 | 159 | 440 | 857 |
| 415 | brain mapping | 8 | 159 | 324 | 548 |
| 418 | Human genetics | 5 | 158 | 1161 | 1789 |
| 419 | Plastics | 8 | 157 | 1012 | 1050 |
| 420 | land degradation | 8 | 156 | 196 | 357 |
| 420 | degradation | 8 | 156 | 196 | 357 |
| 422 | Ocean Engineering | 6 | 155 | 1187 | 1223 |
| 423 | Adhesion | 10 | 153 | 244 | 383 |
| 423 | adhesives | 10 | 153 | 261 | 387 |
| 425 | Computer Engineering | 3 | 152 | 1009 | 515 |
| 425 | Medical Physics | 12 | 152 | 723 | 1108 |
| 427 | Inflammation | 3 | 151 | 1002 | 946 |
| 428 | Medical Oncology | 5 | 150 | 1039 | 1106 |
| 428 | histological techniques | 1 | 150 | 868 | 591 |
| 430 | Total Quality Management | 1 | 149 | 1079 | 314 |
| 430 | libraries | 1 | 149 | 952 | 254 |
| 430 | Genes | 5 | 149 | 792 | 748 |
| 433 | Proteomics | 11 | 148 | 473 | 848 |
| 433 | Sports | 10 | 148 | 1121 | 1235 |
| 435 | Pharmacy | 5 | 147 | 1481 | 1444 |
| 435 | optical devices | 8 | 147 | 218 | 276 |
| 435 | Australia | 10 | 147 | 882 | 1059 |
| 438 | Family Therapy | 7 | 146 | 456 | 438 |
| 438 | child mental health | 7 | 146 | 261 | 302 |
| 440 | Building Materials | 3 | 145 | 1634 | 1619 |
| 440 | Molecular cloning | 12 | 145 | 625 | 992 |
| 440 | Genetic recombination | 12 | 145 | 614 | 985 |
| 440 | Fiber Optics | 9 | 145 | 514 | 622 |
| 440 | Reading | 15 | 145 | 199 | 421 |
| 440 | synthesis | 12 | 145 | 432 | 506 |
| 446 | Corporate Social Responsibility | 1 | 144 | 636 | 369 |
| 446 | environmental auditing | 1 | 144 | 659 | 370 |
| 448 | Medical genetics | 7 | 143 | 1270 | 1726 |
| 448 | Operator theory | 15 | 143 | 78 | 96 |
| 450 | Plant Genetics | 6 | 142 | 436 | 670 |
| 450 | Aging | 12 | 142 | 1182 | 1652 |
| 452 | Geographic information systems | 12 | 139 | 422 | 659 |
| 453 | Computer Architecture | 11 | 138 | 203 | 247 |
| 453 | Optical Communications | 14 | 138 | 249 | 438 |
| 453 | Microprocessors | 11 | 138 | 228 | 315 |
| 456 | Microscopy | 6 | 137 | 962 | 814 |
| 457 | Mineral resources | 4 | 136 | 508 | 581 |
| 457 | Membranes | 6 | 136 | 1190 | 1439 |
| 459 | Ecological Genetics | 19 | 133 | 108 | 348 |
| 459 | Neurolinguistics | 10 | 133 | 187 | 414 |
| 459 | Electromagnetism | 3 | 133 | 1001 | 670 |
| 462 | Neurobiology | 6 | 131 | 1030 | 1298 |
| 462 | Quantum theory | 18 | 131 | 350 | 675 |
| 462 | Immunity | 3 | 131 | 1403 | 1507 |
| 465 | Genetic algorithms | 2 | 130 | 407 | 409 |
| 465 | Porous materials | 9 | 130 | 326 | 413 |
| 467 | Simulation Methods | 5 | 129 | 759 | 657 |
| 467 | Cerebral cortex | 13 | 129 | 395 | 771 |
| 469 | Higher Education | 9 | 127 | 290 | 391 |
| 469 | Cellulose | 3 | 127 | 599 | 542 |
| 471 | Structural design | 6 | 126 | 565 | 624 |
| 471 | Smart Materials | 7 | 126 | 579 | 686 |
| 473 | Crystallography | 42 | 125 | 326 | 732 |
| 474 | Linguistics | 11 | 124 | 680 | 814 |
| 474 | School Psychology | 3 | 124 | 458 | 393 |
| 476 | soil pollution | 8 | 123 | 202 | 382 |
| 476 | Plant hormones | 4 | 123 | 226 | 287 |
| 476 | Genetic therapy | 4 | 123 | 757 | 819 |
| 479 | Comparative Education | 10 | 122 | 53 | 89 |
| 479 | Behavioral research | 13 | 122 | 111 | 268 |
| 479 | Vocational guidance | 4 | 122 | 762 | 796 |
| 482 | food contamination | 8 | 121 | 505 | 668 |
| 483 | Evidence-Based Medicine | 3 | 120 | 666 | 540 |
| 483 | Substance Abuse | 3 | 120 | 1240 | 987 |
| 485 | Ophthalmology | 4 | 119 | 1269 | 1199 |
| 486 | Research Design | 3 | 118 | 1074 | 933 |
| 486 | Liposomes | 3 | 118 | 585 | 512 |
| 486 | Lipid bilayers | 3 | 118 | 493 | 443 |
| 486 | genome | 4 | 118 | 1103 | 1360 |
| 486 | Autism | 4 | 118 | 544 | 640 |
| 491 | Business | 5 | 117 | 1695 | 1976 |
| 491 | International Finance | 5 | 117 | 1322 | 1386 |
| 493 | Rural Development | 4 | 115 | 425 | 456 |
| 493 | Kinetics | 4 | 115 | 402 | 325 |
| 493 | Phytotherapy | 2 | 115 | 862 | 580 |
| 496 | Paleontology | 4 | 114 | 1077 | 908 |
| 496 | mycoses | 2 | 114 | 851 | 821 |
| 496 | biological factors | 7 | 114 | 1220 | 1519 |
| 499 | Learning | 10 | 113 | 678 | 1038 |
| 500 | Clinical Pharmacology | 4 | 112 | 973 | 966 |
| 500 | Host-parasite interactions | 2 | 112 | 1247 | 1200 |
| 502 | Robotics | 10 | 111 | 956 | 1319 |
| 502 | Emotions | 5 | 111 | 444 | 640 |
| 504 | Child | 9 | 109 | 1185 | 1638 |
| 504 | baking | 7 | 109 | 84 | 156 |
| 506 | Healing | 1 | 108 | 281 | 61 |
| 506 | Alternative Medicine | 1 | 108 | 2294 | 1309 |
| 506 | complementary therapies | 1 | 108 | 2563 | 1370 |
| 506 | Holistic Health | 1 | 108 | 888 | 287 |
| 506 | Parasitology | 10 | 108 | 1239 | 1683 |
| 506 | Parasitic Diseases | 10 | 108 | 970 | 1518 |
| 512 | Trademarks | 1 | 107 | 185 | 43 |
| 512 | Allergy | 1 | 107 | 1215 | 1002 |
| 514 | Functional foods | 1 | 106 | 699 | 320 |
| 515 | Global Health | 2 | 105 | 1270 | 728 |
| 516 | Imaging systems | 12 | 104 | 237 | 425 |
| 517 | Cognitive Therapy | 7 | 103 | 351 | 513 |
| 517 | Adaptive control systems | 7 | 103 | 322 | 394 |
| 517 | Vaccines | 3 | 103 | 1485 | 1308 |
| 520 | Intelligent Transportation Systems | 7 | 102 | 693 | 1114 |
| 520 | curriculum evaluation | 6 | 102 | 224 | 316 |
| 520 | alcoholism | 3 | 102 | 1221 | 1143 |
| 520 | Nonlinear systems | 7 | 102 | 341 | 462 |
| 524 | Developed countries | 1 | 101 | 454 | 224 |
| 525 | Calculus of Variations | 6 | 100 | 370 | 356 |
| 525 | Bacterial infections | 1 | 100 | 1165 | 843 |
| 525 | Detectors | 8 | 100 | 901 | 1306 |
| 525 | Consciousness | 8 | 100 | 245 | 414 |
| 529 | Cryptography | 14 | 99 | 195 | 342 |
| 530 | Materials Engineering | 5 | 98 | 521 | 468 |
| 530 | Systems Biology | 6 | 98 | 943 | 1269 |
| 530 | Radiography | 3 | 98 | 660 | 803 |
| 530 | Atmospheric Chemistry | 6 | 98 | 593 | 930 |
| 530 | Obesity | 3 | 98 | 1570 | 1683 |
| 535 | Radiology | 1 | 97 | 1722 | 865 |
| 535 | cosmic rays | 1 | 97 | 695 | 294 |
| 535 | Soil biology | 2 | 97 | 983 | 1038 |
| 535 | Social policy | 4 | 97 | 891 | 755 |
| 539 | Systems Analysis | 6 | 96 | 787 | 911 |
| 539 | Perception | 14 | 96 | 733 | 1301 |
| 541 | energy conservation | 3 | 95 | 2032 | 2198 |
| 541 | Smoking | 2 | 95 | 820 | 745 |
| 541 | drug addiction | 2 | 95 | 1117 | 973 |
| 544 | Oncogenes | 2 | 92 | 981 | 1120 |
| 544 | Primary health care | 3 | 92 | 1533 | 1330 |
| 544 | individual differences | 5 | 92 | 198 | 370 |
| 544 | Sites | 2 | 92 | 638 | 609 |
| 544 | Instructional systems | 5 | 92 | 93 | 122 |
| 549 | Flexible electronics | 1 | 91 | 165 | 130 |
| 549 | Europe | 5 | 91 | 2136 | 2108 |
| 551 | air quality management | 4 | 90 | 406 | 531 |
| 551 | Bifurcation Theory | 3 | 90 | 260 | 190 |
| 551 | violence | 6 | 90 | 651 | 907 |
| 551 | Economic Assistance | 5 | 90 | 496 | 817 |
| 551 | world | 5 | 90 | 514 | 893 |
| 556 | Socioeconomic Factors | 4 | 89 | 631 | 787 |
| 556 | Quantum Optics | 11 | 89 | 408 | 695 |
| 556 | Atomic spectroscopy | 11 | 89 | 560 | 908 |
| 556 | Laser Spectroscopy | 11 | 89 | 372 | 654 |
| 560 | Communication | 11 | 88 | 1039 | 1753 |
| 560 | Granular materials | 4 | 88 | 491 | 636 |
| 562 | planning | 4 | 87 | 632 | 627 |
| 562 | carbon monoxide | 4 | 87 | 260 | 481 |
| 564 | nucleic acids | 3 | 86 | 1339 | 1490 |
| 565 | Power Electronics | 6 | 85 | 759 | 1053 |
| 565 | Parasites | 5 | 85 | 1202 | 1369 |
| 565 | Economic planning | 4 | 85 | 424 | 533 |
| 568 | Cardiovascular system | 2 | 84 | 1174 | 1334 |
| 569 | Mobile Computing | 12 | 83 | 459 | 980 |
| 569 | Mental Health | 5 | 83 | 1141 | 1328 |
| 569 | Ornithology | 8 | 83 | 569 | 727 |
| 569 | Birds | 8 | 83 | 688 | 832 |
| 573 | econometric models | 3 | 82 | 657 | 677 |
| 574 | Project Management | 2 | 81 | 346 | 495 |
| 574 | Restoration Ecology | 5 | 81 | 285 | 447 |
| 574 | Mycology | 7 | 81 | 974 | 1426 |
| 574 | energy development | 1 | 81 | 1524 | 997 |
| 578 | biofuels | 1 | 79 | 474 | 512 |
| 578 | Molecular ecology | 4 | 79 | 828 | 1304 |
| 580 | Radiobiology | 2 | 78 | 1193 | 1050 |
| 581 | Cloud Computing | 5 | 77 | 193 | 411 |
| 581 | infrared radiation | 13 | 77 | 182 | 447 |
| 581 | Immunochemistry | 4 | 77 | 800 | 873 |
| 581 | Investment analysis | 6 | 77 | 623 | 905 |
| 581 | immunoassay | 4 | 77 | 143 | 104 |
| 586 | Astrophysics | 17 | 75 | 1462 | 2427 |
| 586 | wind erosion | 9 | 75 | 21 | 151 |
| 588 | Data Mining | 6 | 74 | 1074 | 1656 |
| 588 | Bioenergetics | 4 | 74 | 697 | 955 |
| 588 | Demography | 1 | 74 | 1020 | 694 |
| 588 | Medical Microbiology | 1 | 74 | 2482 | 2101 |
| 588 | Developmental Disabilities | 4 | 74 | 794 | 1072 |
| 588 | Astrocytes | 3 | 74 | 409 | 636 |
| 588 | Microorganisms | 1 | 74 | 1454 | 1238 |
| 595 | Statistics | 7 | 73 | 1697 | 1825 |
| 595 | Optoelectronics | 5 | 73 | 372 | 316 |
| 597 | Transnational corporations | 2 | 72 | 514 | 459 |
| 597 | Gerontology | 8 | 72 | 1090 | 1468 |
| 597 | Geobiology | 6 | 72 | 267 | 499 |
| 600 | Engineering Mathematics | 7 | 71 | 1237 | 1454 |
| 600 | Health Information Management | 1 | 71 | 661 | 773 |
| 600 | Combinatorial optimization | 3 | 71 | 536 | 288 |
| 600 | plant communities | 4 | 71 | 867 | 1264 |
| 600 | Aggression | 4 | 71 | 399 | 611 |
| 605 | Soil fertility | 1 | 70 | 547 | 489 |
| 606 | Biomechanics | 4 | 69 | 1067 | 1268 |
| 606 | gene therapy | 3 | 69 | 822 | 1007 |
| 606 | Arthropods | 6 | 69 | 100 | 179 |
| 606 | Mitochondrial DNA | 8 | 69 | 53 | 65 |
| 606 | Southeast Asia | 26 | 69 | 37 | 247 |
| 611 | Immunotherapy | 2 | 68 | 1702 | 1734 |
| 611 | Calorimetry | 9 | 68 | 618 | 1149 |
| 611 | Thermal analysis | 9 | 68 | 618 | 1149 |
| 614 | Particle Physics | 1 | 67 | 361 | 301 |
| 614 | Parallel Processing | 2 | 67 | 540 | 575 |
| 614 | big data | 2 | 67 | 844 | 664 |
| 614 | Elementary particles | 1 | 67 | 275 | 278 |
| 618 | Natural resources | 3 | 66 | 714 | 888 |
| 618 | Technology Assessment | 2 | 66 | 558 | 718 |
| 618 | Enzyme | 1 | 66 | 894 | 774 |
| 618 | disease vectors | 3 | 66 | 923 | 1081 |
| 622 | Molecular Pharmacology | 2 | 65 | 886 | 972 |
| 623 | Database Security | 7 | 64 | 22 | 52 |
| 623 | India | 5 | 64 | 1066 | 881 |
| 625 | Historical Geography | 3 | 63 | 170 | 86 |
| 625 | Well-being | 7 | 63 | 41 | 158 |
| 625 | Optoelectronic devices | 4 | 63 | 842 | 747 |
| 625 | economic analysis | 4 | 63 | 171 | 308 |
| 625 | Biomass | 3 | 63 | 695 | 1021 |
| 625 | body temperature | 4 | 63 | 421 | 595 |
| 631 | Ecological Engineering | 7 | 62 | 344 | 1006 |
| 631 | Geriatric Psychiatry | 3 | 62 | 854 | 1014 |
| 631 | Economic Thought | 3 | 62 | 302 | 474 |
| 631 | Waste management | 6 | 62 | 967 | 1416 |
| 631 | economic conditions | 3 | 62 | 493 | 570 |
| 631 | Information society | 4 | 62 | 87 | 175 |
| 631 | Chemical structure | 8 | 62 | 194 | 369 |
| 638 | Agricultural Engineering | 2 | 61 | 538 | 551 |
| 638 | Architecture | 1 | 61 | 893 | 408 |
| 638 | Pharmacokinetics | 2 | 61 | 961 | 1038 |
| 638 | construction | 1 | 61 | 373 | 275 |
| 638 | child behavior | 1 | 61 | 606 | 479 |
| 643 | Nanobiotechnology | 2 | 60 | 516 | 786 |
| 643 | Biomolecules | 4 | 60 | 343 | 683 |
| 645 | Number Theory | 6 | 59 | 566 | 497 |
| 645 | Psychopharmacology | 2 | 59 | 1379 | 1459 |
| 645 | Neuropharmacology | 2 | 59 | 677 | 671 |
| 645 | finance | 8 | 59 | 1497 | 2150 |
| 645 | language | 2 | 59 | 973 | 920 |
| 650 | Quantitative Research | 1 | 58 | 374 | 314 |
| 650 | nuclear magnetic resonance | 1 | 58 | 1262 | 853 |
| 650 | Magnetic Resonance Spectroscopy | 1 | 58 | 1456 | 959 |
| 650 | feeding behavior | 2 | 58 | 849 | 933 |
| 650 | Appetite | 2 | 58 | 747 | 854 |
| 655 | Fluid Mechanics | 1 | 57 | 2081 | 1424 |
| 655 | Health Services Research | 3 | 57 | 1441 | 1555 |
| 655 | East Asia | 5 | 57 | 423 | 528 |
| 655 | supercritical fluids | 1 | 57 | 682 | 566 |
| 655 | Breeding | 2 | 57 | 1293 | 1294 |
| 660 | Medical Anthropology | 4 | 56 | 990 | 1563 |
| 660 | DNA | 2 | 56 | 731 | 662 |
| 660 | Aquaculture | 4 | 56 | 1225 | 1487 |
| 663 | Combinatorial analysis | 6 | 55 | 729 | 754 |
| 663 | Planets | 5 | 55 | 1054 | 1661 |
| 665 | Information Systems | 4 | 54 | 1194 | 1620 |
| 665 | Metabolism | 5 | 54 | 1534 | 2375 |
| 665 | Labor Economics | 1 | 54 | 837 | 540 |
| 665 | Taste | 3 | 54 | 287 | 377 |
| 665 | DNS | 2 | 54 | 608 | 620 |
| 665 | flavor | 3 | 54 | 172 | 283 |
| 665 | smell | 3 | 54 | 287 | 377 |
| 665 | labor | 1 | 54 | 632 | 324 |
| 665 | working class | 1 | 54 | 330 | 271 |
| 665 | Philippines | 5 | 54 | 60 | 129 |
| 675 | Learning disabilities | 7 | 53 | 512 | 881 |
| 675 | Supramolecular chemistry | 1 | 53 | 502 | 206 |
| 677 | Kinesiology | 1 | 52 | 331 | 208 |
| 677 | Bacteriology | 5 | 52 | 1286 | 2101 |
| 677 | psychophysics | 7 | 52 | 212 | 374 |
| 677 | Attention | 7 | 52 | 924 | 1529 |
| 681 | Anatomy | 2 | 51 | 1990 | 1841 |
| 681 | Antioxidants | 2 | 51 | 823 | 1076 |
| 681 | Drug delivery systems | 1 | 51 | 2097 | 1857 |
| 681 | Electrophysiology | 3 | 51 | 845 | 909 |
| 681 | Soviet Union | 5 | 51 | 449 | 444 |
| 681 | at-risk youth | 1 | 51 | 159 | 172 |
| 687 | Organizational Behavior | 1 | 49 | 869 | 849 |
| 688 | health services accessibility | 3 | 48 | 869 | 1063 |
| 688 | Reproductive toxicology | 1 | 48 | 708 | 622 |
| 688 | place marketing | 3 | 48 | 85 | 286 |
| 691 | Language Disorders | 8 | 47 | 484 | 883 |
| 691 | Agricultural Ecology | 2 | 47 | 1192 | 1503 |
| 691 | Water Purification | 4 | 47 | 994 | 1304 |
| 691 | Writing | 7 | 47 | 128 | 416 |
| 691 | Drug discovery | 2 | 47 | 298 | 359 |
| 696 | Career development | 4 | 46 | 341 | 501 |
| 696 | Inclusive Education | 1 | 46 | 376 | 264 |
| 696 | Cognitive Radio Networks | 1 | 46 | 380 | 304 |
| 696 | Second Language Acquisition | 2 | 46 | 242 | 346 |
| 696 | Plant breeding | 2 | 46 | 867 | 918 |
| 696 | Integration | 1 | 46 | 361 | 260 |
| 696 | software | 5 | 46 | 774 | 1449 |
| 696 | population geography | 4 | 46 | 321 | 545 |
| 696 | eugenics | 2 | 46 | 621 | 651 |
| 705 | air quality | 5 | 45 | 92 | 373 |
| 705 | agricultural productivity | 2 | 45 | 84 | 123 |
| 705 | Heterocyclic compounds | 6 | 45 | 692 | 947 |
| 708 | musculoskeletal system | 1 | 44 | 258 | 225 |
| 708 | Climate | 11 | 44 | 195 | 881 |
| 708 | weather | 11 | 44 | 187 | 859 |
| 711 | Geometry | 7 | 43 | 798 | 931 |
| 711 | Herbal medicine | 2 | 43 | 903 | 1280 |
| 711 | Metabolic diseases | 2 | 43 | 1890 | 2203 |
| 714 | Histology | 2 | 42 | 1818 | 2032 |
| 714 | Process Control | 1 | 42 | 1477 | 1547 |
| 714 | Industrial Safety | 1 | 42 | 1868 | 1441 |
| 714 | Production Management | 1 | 42 | 1729 | 1698 |
| 714 | Eastern Europe | 4 | 42 | 732 | 760 |
| 714 | natural products | 5 | 42 | 1393 | 1934 |
| 714 | Memory | 4 | 42 | 1223 | 1798 |
| 714 | Evolution | 9 | 42 | 981 | 2119 |
| 722 | poverty | 1 | 41 | 796 | 615 |
| 722 | healthcare disparities | 1 | 41 | 824 | 701 |
| 722 | isomerism | 4 | 41 | 251 | 420 |
| 722 | hazard mitigation | 3 | 41 | 962 | 1414 |
| 722 | data collection | 3 | 41 | 1062 | 1467 |
| 722 | Chirality | 4 | 41 | 251 | 420 |
| 722 | Egypt | 1 | 41 | 1129 | 921 |
| 729 | Horticulture | 4 | 40 | 631 | 915 |
| 729 | Visual Communication | 4 | 40 | 348 | 549 |
| 729 | Geochemistry | 4 | 40 | 1574 | 2231 |
| 729 | Drug design | 4 | 40 | 1240 | 1888 |
| 729 | Image enhancement | 4 | 40 | 269 | 500 |
| 729 | Logic Programming | 5 | 40 | 232 | 302 |
| 729 | technical education | 4 | 40 | 562 | 851 |
| 729 | Exercise | 5 | 40 | 1109 | 1588 |
| 737 | Hematology | 1 | 39 | 2072 | 1865 |
| 737 | Social Issues | 3 | 39 | 255 | 420 |
| 737 | marketing | 2 | 39 | 2127 | 2294 |
| 737 | toxicity testing | 2 | 39 | 790 | 1009 |
| 737 | Social problems | 3 | 39 | 611 | 868 |
| 737 | Intellectual disability | 5 | 39 | 572 | 948 |
| 743 | Food Science | 2 | 38 | 289 | 255 |
| 743 | motivation | 4 | 38 | 294 | 564 |
| 745 | Enzyme inhibitors | 2 | 37 | 530 | 673 |
| 745 | Cosmochemistry | 1 | 37 | 1248 | 1231 |
| 745 | foods | 1 | 37 | 281 | 265 |
| 745 | venom | 2 | 37 | 910 | 1083 |
| 745 | Toxins | 2 | 37 | 1025 | 1196 |
| 750 | indoor air pollution | 2 | 36 | 472 | 631 |
| 750 | Ventilation | 2 | 36 | 656 | 744 |
| 750 | Sick building syndrome | 2 | 36 | 472 | 631 |
| 753 | Coding Theory | 7 | 35 | 209 | 380 |
| 754 | Nanoelectronics | 2 | 34 | 918 | 879 |
| 754 | Morphology | 1 | 34 | 1379 | 960 |
| 754 | Autoantibodies | 1 | 34 | 735 | 799 |
| 754 | Autoimmunity | 1 | 34 | 899 | 1008 |
| 754 | Autoimmune diseases | 1 | 34 | 811 | 874 |
| 754 | Semiconductor industry | 2 | 34 | 683 | 720 |
| 760 | Computational Chemistry | 3 | 33 | 673 | 952 |
| 760 | Marine Meteorology | 2 | 33 | 361 | 464 |
| 760 | Plasma chemistry | 3 | 33 | 375 | 592 |
| 760 | Pesticides | 2 | 33 | 827 | 983 |
| 760 | Liquid chromatography | 2 | 33 | 635 | 533 |
| 765 | Chemical kinetics | 6 | 32 | 496 | 845 |
| 765 | Synthetic biology | 2 | 32 | 366 | 539 |
| 765 | Cardiovascular diseases | 3 | 32 | 1293 | 1627 |
| 765 | Metallography | 1 | 32 | 1257 | 1169 |
| 765 | behavior therapy | 2 | 32 | 902 | 1061 |
| 770 | Clinical Psychology | 4 | 31 | 946 | 1540 |
| 770 | Green Technology | 2 | 31 | 555 | 841 |
| 770 | Risk assessment | 3 | 31 | 624 | 949 |
| 770 | ecological risk assessment | 3 | 31 | 222 | 484 |
| 770 | Homeostasis | 1 | 31 | 589 | 881 |
| 770 | Neuromuscular diseases | 1 | 31 | 793 | 787 |
| 770 | protein | 3 | 31 | 1088 | 1434 |
| 770 | Physical fitness | 1 | 31 | 1506 | 1427 |
| 770 | Health Risk Assessment | 3 | 31 | 438 | 745 |
| 770 | Muscles | 1 | 31 | 1061 | 1115 |
| 770 | Women's health | 2 | 31 | 1504 | 1675 |
| 770 | Cell metabolism | 1 | 31 | 987 | 1129 |
| 770 | Immune system | 2 | 31 | 932 | 1272 |
| 770 | proteins | 3 | 31 | 1720 | 2293 |
| 784 | Nondestructive testing | 5 | 30 | 509 | 939 |
| 784 | Critical Care | 1 | 30 | 1503 | 1615 |
| 784 | Critical Care Medicine | 1 | 30 | 1425 | 1570 |
| 784 | Health Education | 2 | 30 | 2010 | 2148 |
| 784 | Immunopharmacology | 1 | 30 | 1508 | 1526 |
| 784 | Quantum Gravity | 6 | 30 | 1500 | 2027 |
| 784 | Cell differentiation | 2 | 30 | 1374 | 1882 |
| 784 | older people | 3 | 30 | 1452 | 1609 |
| 784 | cytokines | 1 | 30 | 1606 | 1736 |
| 784 | Cell death | 2 | 30 | 1080 | 1539 |
| 784 | Jurisprudence | 2 | 30 | 1058 | 1073 |
| 795 | Ergonomics | 5 | 29 | 695 | 1231 |
| 795 | Regional Planning | 6 | 29 | 1042 | 1891 |
| 795 | Respiration | 3 | 29 | 1222 | 1778 |
| 795 | ecotourism | 2 | 29 | 312 | 544 |
| 799 | Patient education | 1 | 28 | 868 | 949 |
| 799 | counseling | 1 | 28 | 1867 | 1609 |
| 799 | Interactive multimedia | 1 | 28 | 959 | 973 |
| 799 | data protection | 4 | 28 | 465 | 868 |
| 799 | international cooperation | 3 | 28 | 577 | 976 |
| 804 | Agricultural Biotechnology | 1 | 27 | 588 | 326 |
| 804 | Thrombosis | 1 | 27 | 1160 | 1198 |
| 804 | Raman spectroscopy | 2 | 27 | 974 | 1250 |
| 804 | vascular diseases | 1 | 27 | 871 | 1000 |
| 804 | arthritis | 1 | 27 | 1226 | 1426 |
| 809 | Experimental Psychology | 5 | 26 | 447 | 832 |
| 809 | Globalization | 1 | 26 | 1045 | 959 |
| 809 | Protozoa | 3 | 26 | 396 | 708 |
| 809 | Transport | 1 | 26 | 947 | 1029 |
| 809 | Sea | 1 | 26 | 845 | 889 |
| 809 | Fishery resources | 1 | 26 | 931 | 964 |
| 809 | Lipids | 1 | 26 | 1708 | 1824 |
| 809 | aquatic insects | 1 | 26 | 176 | 80 |
| 809 | Fisheries | 1 | 26 | 2146 | 1940 |
| 818 | Nuclear Engineering | 2 | 25 | 1594 | 1629 |
| 818 | Plant Taxonomy | 1 | 25 | 628 | 618 |
| 818 | Graphene | 1 | 25 | 255 | 364 |
| 818 | Formal Languages | 6 | 25 | 162 | 319 |
| 818 | calcification | 1 | 25 | 708 | 786 |
| 818 | Financial Institutions | 2 | 25 | 524 | 690 |
| 818 | Approximation Theory | 3 | 25 | 458 | 554 |
| 818 | plant oils | 1 | 25 | 442 | 466 |
| 826 | Neuropsychiatry | 2 | 24 | 857 | 1126 |
| 826 | Sedimentology | 2 | 24 | 740 | 1039 |
| 826 | Nonverbal Communication | 2 | 24 | 259 | 480 |
| 826 | Body language | 2 | 24 | 153 | 344 |
| 826 | space environment | 1 | 24 | 297 | 314 |
| 826 | Sedimentary rocks | 3 | 24 | 623 | 972 |
| 826 | transport vesicles | 1 | 24 | 392 | 613 |
| 826 | Population Dynamics | 1 | 24 | 353 | 377 |
| 834 | Health | 5 | 23 | 1512 | 2834 |
| 834 | Consumer education | 1 | 23 | 716 | 874 |
| 834 | Fluorescence | 3 | 23 | 456 | 782 |
| 837 | Econometrics | 2 | 22 | 1563 | 1608 |
| 837 | Lattice Theory | 7 | 22 | 102 | 224 |
| 837 | Ecohydrology | 1 | 22 | 707 | 672 |
| 837 | vibration | 3 | 22 | 1145 | 1668 |
| 837 | global environmental change | 2 | 22 | 953 | 1535 |
| 837 | Outdoor recreation | 1 | 22 | 193 | 221 |
| 837 | Social interaction | 2 | 22 | 432 | 662 |
| 837 | Safety management | 5 | 22 | 383 | 1023 |
| 837 | biomedicine | 1 | 22 | 875 | 1033 |
| 837 | school psychologists | 1 | 22 | 355 | 438 |
| 837 | Aquatic ecology | 1 | 22 | 1421 | 1397 |
| 848 | Mechanical Engineering | 6 | 21 | 1763 | 2652 |
| 848 | Cognitive Psychology | 4 | 21 | 368 | 638 |
| 848 | Manufacturing Processes | 3 | 21 | 2112 | 2813 |
| 848 | Neonatology | 1 | 21 | 939 | 991 |
| 848 | Carcinogenesis | 1 | 21 | 1273 | 1478 |
| 848 | Environmental carcinogens | 1 | 21 | 51 | 93 |
| 848 | Fungi | 3 | 21 | 936 | 1564 |
| 848 | World Wide Web | 2 | 21 | 560 | 632 |
| 848 | Bones | 1 | 21 | 962 | 1183 |
| 857 | Solutions | 2 | 20 | 523 | 627 |
| 857 | scholarly publishing | 1 | 20 | 276 | 241 |
| 857 | Nitric oxide | 1 | 20 | 508 | 689 |
| 860 | Obstetrics | 1 | 19 | 2458 | 2553 |
| 860 | Combustion | 1 | 19 | 1715 | 1842 |
| 860 | Helminthology | 2 | 19 | 89 | 105 |
| 860 | innovation | 2 | 19 | 741 | 1245 |
| 860 | Helminths | 2 | 19 | 89 | 105 |
| 860 | Microwaves | 5 | 19 | 1040 | 1568 |
| 860 | Nonlinear mechanics | 2 | 19 | 586 | 824 |
| 860 | Pregnancy | 1 | 19 | 1283 | 1401 |
| 868 | Educational Sociology | 3 | 18 | 375 | 686 |
| 868 | radiative transfer | 4 | 18 | 511 | 887 |
| 868 | biological monitoring | 1 | 18 | 884 | 1131 |
| 871 | Systems Theory | 1 | 17 | 810 | 673 |
| 871 | Embryology | 1 | 17 | 1662 | 1927 |
| 871 | Production Engineering | 2 | 17 | 2155 | 2591 |
| 871 | Psychiatric Nursing | 1 | 17 | 1065 | 1125 |
| 871 | Action Research | 1 | 17 | 476 | 503 |
| 871 | Entrepreneurship | 3 | 17 | 1010 | 1904 |
| 877 | Microbial Ecology | 1 | 16 | 2707 | 3320 |
| 877 | Algorithms | 1 | 16 | 1219 | 1149 |
| 877 | Divorce | 2 | 16 | 180 | 299 |
| 877 | Diabetes mellitus | 1 | 16 | 2190 | 2548 |
| 877 | Diagnosis | 1 | 16 | 657 | 749 |
| 877 | Marriage | 2 | 16 | 637 | 968 |
| 877 | Wales | 1 | 16 | 274 | 273 |
| 877 | disease susceptibility | 1 | 16 | 112 | 231 |
| 877 | scientific societies | 1 | 16 | 1141 | 1325 |
| 877 | biochemical markers | 1 | 16 | 1010 | 1173 |
| 877 | Decision making | 6 | 16 | 961 | 2364 |
| 877 | Diabetes | 1 | 16 | 2222 | 2555 |
| 877 | symptoms | 1 | 16 | 112 | 231 |
| 890 | Graph Theory | 4 | 15 | 644 | 937 |
| 890 | Stochastic Processes | 1 | 15 | 1469 | 1471 |
| 890 | Boundary Value Problems | 4 | 15 | 689 | 1215 |
| 890 | Schizophrenia | 1 | 15 | 1202 | 1412 |
| 890 | Ion Exchange | 2 | 15 | 146 | 240 |
| 890 | Dyslexia | 2 | 15 | 197 | 390 |
| 890 | Mass Media | 2 | 15 | 1030 | 1006 |
| 890 | Solvent extraction | 2 | 15 | 146 | 240 |
| 890 | RNA | 1 | 15 | 754 | 990 |
| 890 | Fibers | 1 | 15 | 209 | 158 |
| 900 | Marine Biotechnology | 1 | 14 | 412 | 653 |
| 900 | Analytical Toxicology | 1 | 14 | 367 | 494 |
| 900 | Mobile genetic elements | 1 | 14 | 208 | 313 |
| 900 | Multivariate Analysis | 2 | 14 | 688 | 951 |
| 900 | breastfeeding | 1 | 14 | 841 | 1006 |
| 900 | peptides | 1 | 14 | 1301 | 1449 |
| 900 | Carbohydrates | 2 | 14 | 511 | 845 |
| 900 | Gene library | 1 | 14 | 154 | 272 |
| 900 | Nanotubes | 1 | 14 | 417 | 414 |
| 900 | Primates | 1 | 14 | 1014 | 1142 |
| 910 | Philosophy | 7 | 13 | 1056 | 1440 |
| 910 | Psychosomatic Medicine | 2 | 13 | 801 | 1339 |
| 910 | Health Physics | 1 | 13 | 335 | 340 |
| 910 | Visual Perception | 1 | 13 | 1821 | 2021 |
| 910 | educational statistics | 1 | 13 | 178 | 228 |
| 910 | Vision | 1 | 13 | 929 | 1098 |
| 910 | Scandinavia | 2 | 13 | 710 | 1076 |
| 910 | Human biology | 1 | 13 | 1045 | 1176 |
| 910 | environmental issues | 1 | 13 | 788 | 1086 |
| 919 | Audiology | 1 | 12 | 1006 | 1124 |
| 919 | Product Design | 1 | 12 | 799 | 878 |
| 919 | Municipal Engineering | 1 | 12 | 704 | 974 |
| 919 | Poetry | 1 | 12 | 77 | 53 |
| 919 | Microbial Biotechnology | 3 | 12 | 1040 | 2088 |
| 919 | Gene expression regulation | 2 | 12 | 1043 | 1626 |
| 919 | Strategic planning | 2 | 12 | 958 | 1539 |
| 919 | Genetic regulation | 2 | 12 | 1110 | 1728 |
| 919 | Library Science | 2 | 12 | 1176 | 1463 |
| 919 | psychotherapy | 1 | 12 | 1710 | 1855 |
| 919 | Educational evaluation | 1 | 12 | 370 | 419 |
| 919 | Stress | 2 | 12 | 370 | 804 |
| 919 | children | 3 | 12 | 486 | 951 |
| 932 | Medical Technology | 3 | 11 | 1445 | 2729 |
| 932 | Community Psychology | 1 | 11 | 900 | 1164 |
| 932 | Epigenetics | 3 | 11 | 217 | 596 |
| 932 | sedimentary basins | 1 | 11 | 334 | 492 |
| 932 | Epigenomics | 3 | 11 | 215 | 590 |
| 932 | Traditional medicine | 2 | 11 | 256 | 654 |
| 932 | Language teaching | 1 | 11 | 148 | 262 |
| 932 | second language | 1 | 11 | 148 | 262 |
| 932 | ovary | 1 | 11 | 380 | 603 |
| 932 | medical education | 1 | 11 | 2326 | 2622 |
| 932 | heredity | 4 | 11 | 532 | 1187 |
| 932 | probabilities | 1 | 11 | 1783 | 1653 |
| 932 | tests | 1 | 11 | 371 | 575 |
| 932 | Scanning electron microscopy | 2 | 11 | 176 | 378 |
| 946 | Forensic Genetics | 2 | 10 | 292 | 570 |
| 946 | Psychoneuroimmunology | 1 | 10 | 861 | 1225 |
| 946 | reforestation | 1 | 10 | 295 | 429 |
| 946 | Neuroimmunology | 1 | 10 | 956 | 1352 |
| 946 | monoclonal antibodies | 1 | 10 | 475 | 577 |
| 946 | Sensor Networks | 3 | 10 | 263 | 594 |
| 946 | Knowledge management | 2 | 10 | 589 | 1211 |
| 946 | afforestation | 1 | 10 | 295 | 429 |
| 946 | Africa | 4 | 10 | 1304 | 2333 |
| 946 | animal diseases | 1 | 10 | 824 | 1133 |
| 946 | weather forecasting | 1 | 10 | 317 | 488 |
| 946 | explosives | 1 | 10 | 351 | 376 |
| 946 | Performance | 1 | 10 | 450 | 605 |
| 946 | family violence | 1 | 10 | 736 | 1060 |
| 946 | Insect biochemistry | 3 | 10 | 448 | 960 |
| 961 | Anthropology | 1 | 9 | 2159 | 2175 |
| 961 | Logic | 2 | 9 | 572 | 722 |
| 961 | Criminal psychology | 1 | 9 | 1110 | 1263 |
| 961 | Ethnobotany | 1 | 9 | 342 | 615 |
| 961 | Biogeochemistry | 1 | 9 | 1484 | 2005 |
| 961 | Speech Disorders | 2 | 9 | 1044 | 1581 |
| 961 | ethnobiology | 1 | 9 | 450 | 722 |
| 961 | Emulsions | 1 | 9 | 735 | 934 |
| 961 | men | 2 | 9 | 395 | 832 |
| 961 | Roads | 1 | 9 | 991 | 1153 |
| 961 | Eurasia | 1 | 9 | 395 | 535 |
| 961 | Central Asia | 1 | 9 | 415 | 633 |
| 961 | ground penetrating radar | 1 | 9 | 147 | 199 |
| 961 | Speech | 2 | 9 | 1002 | 1555 |
| 961 | Ethnomedicine | 1 | 9 | 342 | 614 |
| 976 | Civil Engineering | 1 | 8 | 2159 | 2225 |
| 976 | Structural dynamics | 1 | 8 | 1343 | 1755 |
| 976 | Acoustics | 1 | 8 | 579 | 551 |
| 976 | Organizational learning | 1 | 8 | 976 | 1329 |
| 976 | Fishery management | 1 | 8 | 1251 | 1581 |
| 976 | Integrated Circuits | 3 | 8 | 816 | 1220 |
| 976 | Microcirculation | 1 | 8 | 718 | 1003 |
| 976 | environmental remediation | 2 | 8 | 480 | 1131 |
| 976 | Semigroups | 4 | 8 | 232 | 488 |
| 976 | aromatic plants | 1 | 8 | 488 | 649 |
| 976 | Nutrigenomics | 1 | 8 | 225 | 432 |
| 976 | Blood vessels | 1 | 8 | 624 | 867 |
| 976 | Personality Assessment | 1 | 8 | 806 | 1155 |
| 976 | Food preferences | 3 | 8 | 370 | 974 |
| 976 | pain | 1 | 8 | 1617 | 1989 |
| 991 | Nursing | 2 | 7 | 2125 | 2951 |
| 991 | Phytochemistry | 1 | 7 | 634 | 1033 |
| 991 | Nonparametric Statistics | 1 | 7 | 375 | 422 |
| 991 | Quantum Chemistry | 1 | 7 | 320 | 420 |
| 991 | Structural health monitoring | 1 | 7 | 374 | 606 |
| 991 | Anti-inflammatory agents | 1 | 7 | 512 | 828 |
| 991 | Bioethics | 1 | 7 | 1403 | 1660 |
| 991 | Quality Assurance | 1 | 7 | 723 | 1039 |
| 991 | Phytoremediation | 1 | 7 | 634 | 1033 |
| 991 | Travel | 1 | 7 | 1309 | 1743 |