| 1 | Ecology | 228 | 10.6K | 566 | 614 |
| 2 | Environment | 99 | 9.6K | 709 | 543 |
| 3 | Science | 163 | 9.6K | 1156 | 1103 |
| 4 | Pollution | 104 | 9.2K | 790 | 520 |
| 5 | Microbiology | 182 | 8.8K | 694 | 670 |
| 6 | Biology | 217 | 8.4K | 884 | 1144 |
| 7 | Botany | 86 | 6.8K | 701 | 452 |
| 8 | Virology | 116 | 6.5K | 333 | 415 |
| 9 | Biodiversity conservation | 18 | 5.7K | 563 | 224 |
| 10 | Chemistry | 100 | 5.5K | 1900 | 1492 |
| 11 | Climate change | 13 | 5.2K | 418 | 194 |
| 11 | Eutrophication | 13 | 5.2K | 409 | 192 |
| 13 | Biochemistry | 157 | 5.2K | 1329 | 1302 |
| 14 | United States | 327 | 5.0K | 272 | 451 |
| 15 | Physics | 74 | 4.6K | 2090 | 1678 |
| 16 | Plants | 32 | 3.9K | 491 | 276 |
| 17 | Medicine | 115 | 3.7K | 1479 | 1453 |
| 18 | Genomics | 95 | 3.4K | 341 | 349 |
| 19 | Biotechnology | 97 | 3.4K | 915 | 1018 |
| 20 | Geography | 59 | 3.3K | 333 | 216 |
| 21 | Environmental Health | 91 | 3.2K | 777 | 843 |
| 22 | Agricultural Chemistry | 95 | 3.2K | 197 | 224 |
| 23 | environmental pollution | 85 | 3.2K | 662 | 715 |
| 24 | Plant diseases | 77 | 3.1K | 224 | 155 |
| 25 | Molecular Biology | 91 | 3.0K | 1450 | 1506 |
| 26 | Pharmacology | 78 | 2.9K | 968 | 855 |
| 27 | Research | 93 | 2.8K | 1452 | 1358 |
| 28 | Fishery management | 123 | 2.8K | 16 | 27 |
| 29 | Physiology | 51 | 2.7K | 932 | 708 |
| 30 | Hydrology | 47 | 2.7K | 459 | 300 |
| 31 | Materials | 44 | 2.7K | 1765 | 1219 |
| 32 | Bioinformatics | 15 | 2.6K | 823 | 306 |
| 33 | Fisheries | 93 | 2.5K | 121 | 141 |
| 34 | Nanotechnology | 45 | 2.4K | 1345 | 1124 |
| 35 | Endocrinology | 28 | 2.4K | 833 | 607 |
| 36 | Infertility | 16 | 2.3K | 310 | 132 |
| 36 | fertility | 16 | 2.3K | 338 | 144 |
| 38 | Chemical Engineering | 27 | 2.2K | 1699 | 1121 |
| 39 | Renewable Energy Sources | 10 | 2.2K | 1547 | 650 |
| 40 | Energy Conversion | 16 | 2.2K | 477 | 322 |
| 41 | Biogeography | 13 | 2.1K | 436 | 178 |
| 42 | Soil Science | 104 | 2.1K | 131 | 241 |
| 43 | Biophysics | 43 | 2.1K | 1493 | 1173 |
| 44 | Nutrition | 71 | 2.1K | 699 | 777 |
| 45 | Computational Biology | 12 | 2.1K | 1121 | 421 |
| 46 | Genetics | 64 | 2.1K | 612 | 808 |
| 47 | Immunology | 36 | 2.0K | 816 | 723 |
| 48 | viruses | 26 | 1.9K | 379 | 316 |
| 49 | Remote Sensing | 41 | 1.9K | 184 | 68 |
| 50 | Andrology | 14 | 1.9K | 192 | 21 |
| 50 | Androgens | 14 | 1.9K | 48 | 11 |
| 52 | Breeding | 50 | 1.9K | 164 | 139 |
| 53 | Materials Science | 49 | 1.8K | 1172 | 1092 |
| 54 | Reproduction | 44 | 1.8K | 474 | 368 |
| 55 | Microbial Ecology | 34 | 1.8K | 550 | 572 |
| 56 | Biocompatible Materials | 30 | 1.8K | 1200 | 1049 |
| 57 | Toxicology | 42 | 1.7K | 1182 | 1010 |
| 58 | Geophysics | 43 | 1.7K | 920 | 781 |
| 59 | food technology | 50 | 1.7K | 433 | 430 |
| 60 | Earth Sciences | 11 | 1.7K | 1681 | 624 |
| 61 | Food | 38 | 1.7K | 724 | 607 |
| 62 | Environmental Chemistry | 19 | 1.7K | 636 | 480 |
| 63 | Biomedical Engineering | 44 | 1.6K | 1245 | 1112 |
| 64 | gene mapping | 22 | 1.6K | 567 | 404 |
| 65 | Nanostructured Materials | 25 | 1.6K | 1138 | 800 |
| 66 | Entomology | 92 | 1.6K | 218 | 285 |
| 67 | Chromosome mapping | 21 | 1.6K | 530 | 331 |
| 68 | Wetland ecology | 34 | 1.5K | 22 | 13 |
| 69 | Wetland conservation | 33 | 1.5K | 17 | 9 |
| 69 | Wetlands | 33 | 1.5K | 17 | 9 |
| 71 | plant molecular biology | 27 | 1.4K | 416 | 485 |
| 72 | Analytical Chemistry | 40 | 1.4K | 1306 | 1178 |
| 73 | Electrical Engineering | 34 | 1.4K | 959 | 417 |
| 74 | Biomass Energy | 37 | 1.4K | 523 | 673 |
| 75 | Zoology | 59 | 1.4K | 434 | 414 |
| 75 | Natural history | 38 | 1.4K | 741 | 1581 |
| 77 | soil management | 28 | 1.4K | 77 | 72 |
| 78 | Environmental monitoring | 31 | 1.3K | 1124 | 1050 |
| 79 | tillage | 25 | 1.3K | 67 | 63 |
| 80 | Freshwater Ecology | 85 | 1.2K | 1 | 1 |
| 81 | Medical Microbiology | 22 | 1.2K | 700 | 642 |
| 82 | Electronics | 23 | 1.2K | 1248 | 753 |
| 83 | soil microbiology | 29 | 1.1K | 371 | 500 |
| 84 | Wildlife management | 56 | 1.1K | 48 | 52 |
| 85 | Water | 14 | 1.1K | 1098 | 822 |
| 86 | Agriculture | 41 | 1.1K | 366 | 418 |
| 87 | Immunity | 7 | 1.1K | 967 | 664 |
| 88 | Diet | 32 | 1.1K | 458 | 580 |
| 89 | Plant physiology | 25 | 1.1K | 699 | 691 |
| 90 | drug therapy | 32 | 1.1K | 550 | 512 |
| 91 | Agronomy | 69 | 1.1K | 48 | 107 |
| 92 | energy conservation | 14 | 1.1K | 850 | 649 |
| 93 | Wildlife conservation | 25 | 1.1K | 281 | 320 |
| 94 | Electrochemistry | 47 | 1.0K | 1140 | 1069 |
| 95 | Agricultural Science | 44 | 1.0K | 20 | 60 |
| 96 | solar cells | 11 | 1.0K | 359 | 178 |
| 97 | Animal breeding | 29 | 1.0K | 187 | 130 |
| 98 | Environmental Engineering | 35 | 1.0K | 939 | 1052 |
| 99 | Biodiversity | 17 | 1.0K | 799 | 570 |
| 100 | Plant Biotechnology | 5 | 1.0K | 519 | 111 |
| 100 | Plant genetic engineering | 5 | 1.0K | 611 | 208 |
| 102 | Engineering | 12 | 1.0K | 2218 | 903 |
| 103 | Environmental Management | 32 | 1.0K | 763 | 1004 |
| 104 | Colloids | 27 | 985 | 1358 | 1314 |
| 105 | Agricultural Ecology | 20 | 973 | 270 | 291 |
| 106 | Chemotherapy | 22 | 958 | 369 | 276 |
| 107 | Developing countries | 20 | 952 | 722 | 473 |
| 108 | Diagnostic microbiology | 9 | 932 | 543 | 441 |
| 109 | Planets | 17 | 929 | 604 | 563 |
| 110 | Plant Ecology | 23 | 911 | 579 | 598 |
| 111 | Pharmaceutical Chemistry | 25 | 908 | 1255 | 1135 |
| 112 | Medical Physics | 5 | 901 | 1097 | 478 |
| 113 | Pharmacy | 41 | 844 | 414 | 544 |
| 114 | Cell Biology | 21 | 826 | 1348 | 1469 |
| 115 | Public Health | 32 | 807 | 1398 | 1437 |
| 116 | Horticulture | 10 | 787 | 328 | 76 |
| 117 | nanoscience | 13 | 783 | 1405 | 1103 |
| 118 | Water pollution | 14 | 781 | 1259 | 1003 |
| 119 | Surface Chemistry | 15 | 773 | 1824 | 1424 |
| 120 | Bioengineering | 34 | 768 | 1164 | 1570 |
| 121 | environmental protection | 25 | 764 | 1122 | 1196 |
| 122 | Catalysis | 17 | 762 | 1660 | 1511 |
| 123 | Plant cells | 11 | 761 | 545 | 602 |
| 124 | Pharmacognosy | 5 | 750 | 1405 | 601 |
| 124 | Energy Storage | 11 | 750 | 580 | 369 |
| 126 | Soil biology | 10 | 742 | 466 | 389 |
| 127 | Medicinal plants | 3 | 722 | 1315 | 435 |
| 128 | Landscape Ecology | 12 | 716 | 146 | 119 |
| 129 | Metabolism | 21 | 700 | 843 | 957 |
| 130 | Solar power plants | 1 | 693 | 320 | 34 |
| 130 | Photovoltaic Cells | 1 | 693 | 322 | 34 |
| 132 | Cytology | 23 | 663 | 1374 | 1580 |
| 133 | Energy Consumption | 4 | 657 | 280 | 134 |
| 134 | Atmospheric Physics | 18 | 655 | 569 | 560 |
| 135 | Artificial Intelligence | 6 | 630 | 2617 | 1393 |
| 136 | livestock | 70 | 621 | 27 | 72 |
| 137 | animal diseases | 14 | 615 | 151 | 86 |
| 138 | Climatology | 15 | 611 | 684 | 638 |
| 138 | Food additives | 16 | 611 | 342 | 378 |
| 140 | Food Microbiology | 7 | 605 | 694 | 493 |
| 141 | ecosystem | 9 | 599 | 685 | 547 |
| 142 | Molecular Pharmacology | 11 | 597 | 326 | 290 |
| 143 | baking | 33 | 596 | 16 | 37 |
| 144 | Host-parasite interactions | 3 | 594 | 1039 | 599 |
| 145 | Environmental Policy | 27 | 588 | 941 | 1428 |
| 145 | fuel cells | 11 | 588 | 619 | 571 |
| 147 | Bacteriology | 17 | 585 | 679 | 801 |
| 148 | Transportation | 30 | 582 | 411 | 576 |
| 149 | Optical materials | 9 | 565 | 1544 | 1161 |
| 150 | Fisheries Law | 22 | 563 | 20 | 55 |
| 150 | fisheries management | 22 | 563 | 20 | 55 |
| 152 | families | 30 | 558 | 169 | 199 |
| 153 | mammals | 22 | 555 | 251 | 247 |
| 154 | hydrocolloids | 15 | 552 | 200 | 313 |
| 155 | Industrial Microbiology | 20 | 545 | 583 | 817 |
| 155 | sanitation | 8 | 545 | 835 | 846 |
| 157 | Energy Policy | 6 | 533 | 1884 | 1373 |
| 158 | Composite Materials | 11 | 521 | 1407 | 1256 |
| 159 | Structural Engineering | 29 | 520 | 467 | 583 |
| 160 | Immunotherapy | 2 | 514 | 1654 | 754 |
| 161 | Immune system | 2 | 510 | 925 | 542 |
| 162 | Nuclear Physics | 13 | 508 | 2163 | 1724 |
| 163 | Aquaculture | 32 | 505 | 331 | 493 |
| 164 | Vaccines | 15 | 501 | 598 | 552 |
| 165 | Virulence | 3 | 494 | 900 | 612 |
| 166 | Cancer | 15 | 491 | 1173 | 1283 |
| 167 | Psychology | 26 | 486 | 1579 | 1682 |
| 167 | Solar Energy | 15 | 486 | 656 | 768 |
| 169 | Earthquake Engineering | 22 | 480 | 485 | 577 |
| 170 | Meteorology | 11 | 476 | 1051 | 1001 |
| 171 | Biochemical Engineering | 20 | 472 | 1289 | 1844 |
| 172 | Plant Genetics | 7 | 471 | 386 | 346 |
| 172 | Dietetics | 23 | 471 | 157 | 175 |
| 172 | Ocean Engineering | 22 | 471 | 592 | 704 |
| 175 | Veterinary Immunology | 9 | 470 | 148 | 92 |
| 176 | Nursing | 30 | 469 | 448 | 466 |
| 177 | Energy Harvesting | 4 | 460 | 352 | 298 |
| 178 | Biogeochemistry | 14 | 458 | 446 | 560 |
| 179 | Roads | 25 | 456 | 202 | 196 |
| 180 | Cybernetics | 6 | 448 | 1106 | 680 |
| 181 | environmental indicators | 10 | 447 | 543 | 511 |
| 182 | Agricultural Engineering | 8 | 439 | 195 | 118 |
| 182 | genome | 7 | 439 | 813 | 763 |
| 184 | Health | 20 | 432 | 679 | 771 |
| 185 | Environmental Microbiology | 16 | 431 | 459 | 720 |
| 185 | Land use | 11 | 431 | 495 | 434 |
| 187 | Great Lakes | 10 | 428 | 73 | 59 |
| 188 | Cognition | 7 | 427 | 1101 | 778 |
| 189 | Sports | 24 | 421 | 682 | 761 |
| 190 | Technology | 15 | 418 | 1601 | 1480 |
| 191 | Green Chemistry | 5 | 417 | 1311 | 992 |
| 191 | Plant breeding | 19 | 417 | 177 | 223 |
| 193 | Reproductive toxicology | 4 | 412 | 301 | 124 |
| 194 | Environmental Toxicology | 21 | 403 | 752 | 1181 |
| 194 | actuators | 8 | 403 | 1359 | 1099 |
| 194 | transducers | 8 | 403 | 1359 | 1099 |
| 197 | Evolution | 16 | 385 | 717 | 912 |
| 198 | Psychiatry | 17 | 382 | 1560 | 1697 |
| 199 | Forest Ecology | 11 | 381 | 482 | 481 |
| 199 | Forest Management | 11 | 381 | 442 | 441 |
| 201 | Clinical Chemistry | 19 | 380 | 944 | 1237 |
| 202 | Environmental Geology | 10 | 379 | 844 | 718 |
| 203 | Communication | 22 | 374 | 674 | 910 |
| 204 | Geology | 13 | 371 | 1389 | 1262 |
| 205 | psychotherapy | 6 | 365 | 837 | 578 |
| 206 | Bioorganic chemistry | 12 | 364 | 1410 | 1384 |
| 207 | Oncology | 9 | 358 | 1019 | 1266 |
| 208 | nucleic acids | 10 | 357 | 823 | 927 |
| 209 | Evolutionary Genetics | 2 | 355 | 805 | 184 |
| 209 | Molecular Epidemiology | 2 | 355 | 805 | 184 |
| 211 | solar power | 10 | 351 | 347 | 433 |
| 211 | Cognitive Therapy | 4 | 351 | 500 | 259 |
| 213 | Atmospheric Chemistry | 7 | 349 | 532 | 557 |
| 214 | Polymers | 18 | 348 | 1950 | 2011 |
| 215 | Regional Planning | 5 | 346 | 1114 | 651 |
| 216 | Ultrasonics | 7 | 343 | 735 | 623 |
| 217 | Biomass | 13 | 341 | 176 | 332 |
| 218 | Education | 37 | 332 | 921 | 1373 |
| 218 | polymerization | 16 | 332 | 1753 | 1777 |
| 220 | plant communities | 9 | 331 | 591 | 683 |
| 221 | Bones | 10 | 329 | 338 | 428 |
| 222 | Parasitology | 16 | 327 | 953 | 983 |
| 222 | Health promotion | 24 | 327 | 270 | 411 |
| 224 | coal | 5 | 325 | 1226 | 970 |
| 225 | Computer Science | 7 | 323 | 1354 | 658 |
| 226 | Genetic engineering | 14 | 321 | 843 | 1029 |
| 226 | Broadcasting | 8 | 321 | 58 | 50 |
| 228 | Geomorphology | 7 | 319 | 909 | 825 |
| 229 | Visual Perception | 4 | 318 | 1111 | 687 |
| 229 | Memory | 4 | 318 | 1207 | 823 |
| 229 | Attention | 4 | 318 | 1160 | 728 |
| 229 | Perception | 4 | 318 | 1259 | 800 |
| 233 | Systems Biology | 7 | 311 | 870 | 672 |
| 233 | Geobiology | 11 | 311 | 163 | 170 |
| 233 | disease vectors | 6 | 311 | 604 | 400 |
| 236 | Medical Laboratory Science | 12 | 306 | 896 | 1147 |
| 236 | Sustainable agriculture | 15 | 306 | 178 | 291 |
| 236 | Soil ecology | 6 | 306 | 495 | 424 |
| 239 | Exercise | 16 | 304 | 546 | 615 |
| 240 | Hormones | 8 | 303 | 694 | 653 |
| 241 | Genes | 11 | 302 | 477 | 460 |
| 242 | Neurology | 8 | 301 | 2395 | 2236 |
| 242 | Metabolic diseases | 7 | 301 | 1166 | 1169 |
| 244 | Bioremediation | 1 | 293 | 1467 | 357 |
| 244 | Water quality | 1 | 293 | 523 | 30 |
| 244 | Water chemistry | 1 | 293 | 761 | 47 |
| 247 | Health Education | 29 | 291 | 473 | 758 |
| 247 | Developmental Biology | 14 | 291 | 777 | 1132 |
| 249 | Reproductive health | 2 | 290 | 865 | 304 |
| 249 | atmospheric models | 5 | 290 | 447 | 402 |
| 251 | Steroids | 7 | 289 | 545 | 439 |
| 252 | Sustainable Engineering | 4 | 288 | 1370 | 970 |
| 252 | energy resources | 2 | 288 | 1540 | 1072 |
| 254 | Geriatrics | 9 | 287 | 1445 | 1198 |
| 255 | Obesity | 6 | 285 | 1155 | 1038 |
| 256 | Family | 16 | 283 | 336 | 410 |
| 257 | Geographic information systems | 9 | 267 | 549 | 367 |
| 258 | biological factors | 5 | 266 | 1471 | 953 |
| 258 | Birds | 13 | 266 | 504 | 440 |
| 260 | Geochemistry | 7 | 264 | 1231 | 1119 |
| 261 | Organic Chemistry | 12 | 263 | 1669 | 1648 |
| 262 | Herbal medicine | 4 | 262 | 589 | 402 |
| 263 | Microorganisms | 6 | 260 | 654 | 717 |
| 264 | Sports Medicine | 16 | 259 | 1030 | 1136 |
| 265 | Animal husbandry | 11 | 258 | 103 | 104 |
| 266 | educational innovations | 2 | 257 | 676 | 231 |
| 267 | Rural Development | 5 | 253 | 346 | 257 |
| 267 | drug evaluation | 7 | 253 | 753 | 648 |
| 269 | Oceanography | 5 | 251 | 1173 | 949 |
| 269 | Spectrum analysis | 16 | 251 | 1969 | 2240 |
| 269 | Behavior | 12 | 251 | 1471 | 1949 |
| 272 | Animal ecology | 10 | 250 | 605 | 634 |
| 273 | Building Materials | 9 | 248 | 1026 | 1297 |
| 273 | Radio | 10 | 248 | 736 | 822 |
| 275 | Marriage | 12 | 246 | 185 | 225 |
| 276 | Educational Technology | 2 | 245 | 1979 | 854 |
| 277 | Transgenic plants | 10 | 243 | 133 | 223 |
| 278 | Parasitic Diseases | 10 | 242 | 950 | 1022 |
| 279 | Ferroelectricity | 6 | 241 | 721 | 359 |
| 280 | Zoonoses | 5 | 236 | 164 | 117 |
| 281 | free radicals | 4 | 232 | 1041 | 1006 |
| 282 | Photochemistry | 9 | 231 | 956 | 963 |
| 283 | Optics | 11 | 229 | 2230 | 1917 |
| 284 | Social Sciences | 10 | 225 | 1872 | 1493 |
| 285 | Comparative Physiology | 10 | 224 | 402 | 476 |
| 286 | Economics | 17 | 223 | 1836 | 1995 |
| 286 | Signal Transduction | 9 | 223 | 729 | 979 |
| 288 | Sound | 4 | 221 | 888 | 448 |
| 288 | Ultrasound | 4 | 221 | 596 | 391 |
| 288 | Radio frequency | 4 | 221 | 366 | 224 |
| 291 | water supply | 3 | 220 | 818 | 588 |
| 291 | Aquatic ecology | 17 | 220 | 253 | 456 |
| 293 | Fracture mechanics | 13 | 218 | 661 | 791 |
| 294 | Medical Oncology | 6 | 215 | 957 | 938 |
| 295 | Pediatrics | 7 | 214 | 1231 | 1263 |
| 296 | Food service management | 6 | 213 | 236 | 382 |
| 297 | Zeolites | 1 | 210 | 1385 | 671 |
| 297 | biological evolution | 7 | 210 | 1222 | 1418 |
| 299 | irrigation | 3 | 206 | 341 | 118 |
| 300 | Quality Control | 10 | 204 | 770 | 995 |
| 300 | China | 9 | 204 | 1587 | 1525 |
| 302 | Biogeochemical cycles | 2 | 202 | 449 | 414 |
| 303 | Marine Biology | 12 | 200 | 1249 | 1559 |
| 303 | Restoration Ecology | 16 | 200 | 96 | 237 |
| 303 | Detectors | 9 | 200 | 839 | 867 |
| 306 | global environmental change | 5 | 199 | 550 | 630 |
| 306 | Chromatographic analysis | 13 | 199 | 817 | 932 |
| 308 | health behavior | 10 | 194 | 420 | 553 |
| 309 | Cell differentiation | 6 | 193 | 900 | 1114 |
| 309 | Communication in medicine | 7 | 193 | 305 | 288 |
| 311 | Electrophoresis | 12 | 192 | 746 | 977 |
| 311 | bioclimatology | 7 | 192 | 509 | 521 |
| 311 | Chromatography | 12 | 192 | 725 | 863 |
| 314 | finance | 8 | 191 | 1499 | 1327 |
| 315 | Embryology | 11 | 190 | 683 | 988 |
| 315 | cell physiology | 5 | 190 | 991 | 1078 |
| 317 | Animal Nutrition | 16 | 189 | 185 | 295 |
| 317 | Organic Geochemistry | 5 | 189 | 253 | 297 |
| 317 | Cosmochemistry | 5 | 189 | 653 | 608 |
| 320 | city planning | 3 | 188 | 1522 | 937 |
| 321 | Drug design | 7 | 187 | 906 | 987 |
| 321 | Climate | 8 | 187 | 271 | 366 |
| 321 | Europe | 9 | 187 | 1612 | 1489 |
| 324 | management | 7 | 186 | 2273 | 2323 |
| 325 | Wireless Communication Systems | 3 | 185 | 2143 | 1376 |
| 326 | Conservation Biology | 5 | 182 | 796 | 774 |
| 326 | carcinogens | 11 | 182 | 378 | 653 |
| 328 | Physical fitness | 11 | 181 | 458 | 665 |
| 328 | Telecommunication | 5 | 181 | 1972 | 1555 |
| 330 | Hazardous waste | 2 | 180 | 1160 | 918 |
| 331 | Soil Mechanics | 3 | 179 | 1004 | 717 |
| 332 | Condensed Matter | 9 | 178 | 1793 | 1803 |
| 332 | pain | 2 | 178 | 1293 | 844 |
| 334 | Biopharmaceutics | 5 | 175 | 765 | 786 |
| 335 | Chemical Oceanography | 1 | 174 | 427 | 254 |
| 335 | Multimedia Systems | 6 | 174 | 1302 | 1017 |
| 337 | Cartography | 5 | 173 | 286 | 140 |
| 337 | Geodesy | 5 | 173 | 535 | 389 |
| 337 | environmental issues | 4 | 173 | 319 | 264 |
| 340 | lasers | 3 | 172 | 2012 | 1222 |
| 341 | Community Psychiatry | 3 | 170 | 839 | 636 |
| 342 | Mathematics | 34 | 168 | 2268 | 2929 |
| 342 | Ichthyology | 11 | 168 | 134 | 137 |
| 342 | radioactive waste | 1 | 168 | 1319 | 890 |
| 342 | industrial waste | 1 | 168 | 1368 | 891 |
| 342 | Fish | 11 | 168 | 98 | 124 |
| 347 | Insects | 7 | 166 | 924 | 827 |
| 348 | rural health | 5 | 165 | 123 | 101 |
| 349 | food contamination | 7 | 164 | 543 | 491 |
| 349 | Fertilizers | 4 | 164 | 271 | 229 |
| 351 | Molecular Genetics | 3 | 163 | 1507 | 1371 |
| 351 | scientific societies | 3 | 163 | 665 | 443 |
| 353 | Information Technology | 5 | 162 | 1946 | 1593 |
| 353 | freshwater biology | 5 | 162 | 652 | 594 |
| 353 | Psychophysiology | 6 | 162 | 1747 | 1833 |
| 356 | Health Policy | 7 | 161 | 1217 | 1196 |
| 356 | Water quality management | 13 | 161 | 764 | 1075 |
| 358 | Malaria | 2 | 158 | 708 | 404 |
| 359 | Photobiology | 4 | 157 | 1180 | 960 |
| 359 | cytokines | 3 | 157 | 1065 | 914 |
| 361 | soil conservation | 6 | 156 | 494 | 544 |
| 361 | Regional Development | 3 | 156 | 260 | 180 |
| 361 | Nanostructures | 4 | 156 | 1684 | 1476 |
| 361 | Animal genetics | 10 | 156 | 254 | 381 |
| 361 | Development planning | 3 | 156 | 218 | 160 |
| 361 | weather | 6 | 156 | 330 | 378 |
| 361 | miniaturization | 6 | 156 | 1202 | 1375 |
| 361 | Economic planning | 3 | 156 | 508 | 305 |
| 369 | Psychiatric Nursing | 8 | 154 | 352 | 364 |
| 370 | Pharmacy management | 5 | 152 | 193 | 142 |
| 371 | Process Control | 2 | 151 | 1147 | 980 |
| 371 | Surface-Active Agents | 5 | 151 | 845 | 983 |
| 371 | Job satisfaction | 1 | 151 | 225 | 146 |
| 371 | Production Management | 2 | 151 | 1372 | 1141 |
| 371 | Surface properties | 5 | 151 | 895 | 1054 |
| 371 | Work | 1 | 151 | 602 | 210 |
| 371 | job stress | 1 | 151 | 225 | 146 |
| 378 | Microelectronics | 4 | 150 | 1387 | 1255 |
| 378 | Religion | 25 | 150 | 205 | 241 |
| 378 | Continuing Education | 4 | 150 | 383 | 158 |
| 378 | Algae | 1 | 150 | 1043 | 553 |
| 378 | Seaweed | 1 | 150 | 818 | 454 |
| 383 | Highway Engineering | 10 | 147 | 151 | 204 |
| 383 | Functional foods | 1 | 147 | 691 | 238 |
| 383 | feeding behavior | 3 | 147 | 681 | 603 |
| 383 | Phytotherapy | 2 | 147 | 855 | 461 |
| 387 | Growth | 8 | 145 | 605 | 995 |
| 388 | Therapeutics | 5 | 144 | 1058 | 1119 |
| 389 | Microbial Biotechnology | 9 | 142 | 403 | 726 |
| 389 | Socioeconomic Factors | 7 | 142 | 422 | 559 |
| 391 | Religion and Science | 23 | 141 | 7 | 11 |
| 391 | Popular Literature | 22 | 141 | 8 | 11 |
| 391 | Molecular evolution | 4 | 141 | 1178 | 1240 |
| 391 | Chromosomes | 2 | 141 | 979 | 738 |
| 395 | India | 7 | 140 | 803 | 434 |
| 396 | Radiation | 2 | 139 | 2284 | 1275 |
| 397 | behavioral medicine | 5 | 138 | 911 | 1155 |
| 397 | Plant tissue culture | 4 | 138 | 583 | 529 |
| 397 | Parasites | 4 | 138 | 1308 | 1048 |
| 397 | Agricultural systems | 4 | 138 | 234 | 276 |
| 397 | Plant cell culture | 4 | 138 | 515 | 521 |
| 402 | shellfish | 2 | 137 | 204 | 70 |
| 403 | Nanochemistry | 2 | 136 | 1487 | 864 |
| 403 | nursing education | 8 | 136 | 43 | 54 |
| 403 | preventive medicine | 6 | 136 | 711 | 861 |
| 403 | Ornithology | 8 | 136 | 558 | 533 |
| 407 | rivers | 10 | 135 | 82 | 205 |
| 408 | Psychopharmacology | 4 | 134 | 1057 | 1093 |
| 408 | Tourism | 9 | 134 | 908 | 1486 |
| 408 | mycoses | 6 | 134 | 467 | 733 |
| 408 | personality | 7 | 134 | 934 | 1277 |
| 408 | Tropical Medicine | 4 | 134 | 1390 | 1093 |
| 413 | mass transfer | 3 | 133 | 1616 | 1369 |
| 414 | Proteomics | 6 | 132 | 678 | 876 |
| 414 | Neurotoxicology | 3 | 132 | 549 | 482 |
| 414 | Futures | 5 | 132 | 215 | 192 |
| 414 | Molecular structure | 10 | 132 | 1342 | 1601 |
| 418 | Adolescent | 13 | 131 | 878 | 1370 |
| 419 | California | 5 | 130 | 276 | 255 |
| 420 | Appetite | 2 | 129 | 737 | 588 |
| 421 | Industrial Safety | 3 | 127 | 1159 | 843 |
| 421 | alcoholism | 5 | 127 | 954 | 995 |
| 423 | Drug delivery systems | 6 | 126 | 1072 | 1333 |
| 424 | Soil fertility | 4 | 125 | 235 | 342 |
| 425 | Early Childhood Education | 9 | 124 | 299 | 381 |
| 425 | Economic History | 6 | 124 | 2239 | 1912 |
| 425 | multimedia | 3 | 124 | 484 | 474 |
| 425 | Interactive multimedia | 3 | 124 | 549 | 508 |
| 429 | Child Development | 6 | 123 | 1221 | 1398 |
| 429 | Biofilms | 1 | 123 | 335 | 177 |
| 431 | Sonochemistry | 3 | 122 | 660 | 794 |
| 431 | Consumer education | 5 | 122 | 200 | 345 |
| 433 | Traffic Engineering | 7 | 121 | 213 | 382 |
| 433 | Microbial Genetics | 3 | 121 | 322 | 302 |
| 433 | phytopathogenic bacteria | 3 | 121 | 221 | 275 |
| 433 | Culture techniques | 2 | 121 | 336 | 186 |
| 437 | Medical Technology | 4 | 120 | 1241 | 1193 |
| 437 | Mycology | 10 | 120 | 794 | 1203 |
| 437 | Screening | 3 | 120 | 164 | 94 |
| 440 | Entrepreneurship | 4 | 119 | 871 | 1048 |
| 441 | sustainability | 2 | 117 | 1079 | 849 |
| 442 | Political Science | 3 | 116 | 1609 | 996 |
| 442 | Histology | 2 | 116 | 1807 | 1418 |
| 442 | Research Design | 4 | 116 | 917 | 912 |
| 442 | Carcinogenesis | 4 | 116 | 711 | 830 |
| 442 | mutagens | 4 | 116 | 564 | 721 |
| 447 | Environmental Psychology | 1 | 115 | 670 | 462 |
| 447 | Cytokine | 2 | 115 | 464 | 425 |
| 449 | Human Geography | 6 | 113 | 731 | 764 |
| 449 | pigments | 3 | 113 | 878 | 725 |
| 451 | homosexuality | 4 | 112 | 327 | 326 |
| 452 | Economic Development | 3 | 111 | 1497 | 1329 |
| 453 | mutation | 1 | 110 | 827 | 567 |
| 453 | Venture Capital | 1 | 110 | 491 | 476 |
| 453 | innovation | 1 | 110 | 1023 | 745 |
| 456 | Ecohydrology | 5 | 109 | 224 | 259 |
| 457 | Vaccination | 1 | 108 | 414 | 201 |
| 457 | Child psychology | 5 | 108 | 1031 | 1239 |
| 459 | Human genetics | 1 | 107 | 1905 | 1817 |
| 459 | recreation | 9 | 107 | 343 | 445 |
| 461 | Pathology | 3 | 106 | 1496 | 1443 |
| 461 | Risk | 5 | 106 | 360 | 488 |
| 463 | soil pollution | 2 | 105 | 724 | 420 |
| 463 | investigative techniques | 1 | 105 | 302 | 153 |
| 465 | Mobile Computing | 2 | 104 | 1275 | 859 |
| 465 | Liver diseases | 1 | 104 | 1364 | 1121 |
| 465 | proteins | 8 | 104 | 1136 | 1480 |
| 468 | Radiobiology | 1 | 103 | 1416 | 912 |
| 468 | Radiation effects | 3 | 103 | 634 | 681 |
| 470 | Neurophysiology | 3 | 102 | 2260 | 2147 |
| 471 | Gerontology | 3 | 101 | 1690 | 1219 |
| 471 | Bacterial infections | 1 | 101 | 1137 | 817 |
| 471 | ethanol | 3 | 101 | 481 | 398 |
| 474 | Nutrition physiology | 7 | 100 | 391 | 646 |
| 474 | Divorce | 7 | 100 | 61 | 73 |
| 474 | Vocational guidance | 10 | 100 | 445 | 855 |
| 477 | Population Genetics | 4 | 99 | 936 | 1139 |
| 477 | Pesticides | 5 | 99 | 442 | 477 |
| 479 | Jurisprudence | 3 | 98 | 865 | 640 |
| 479 | Criminal investigation | 3 | 98 | 177 | 122 |
| 481 | Pharmaceutical Technology | 5 | 97 | 1133 | 1372 |
| 481 | Mineral resources | 1 | 97 | 1178 | 712 |
| 483 | Orthopedics | 3 | 96 | 1172 | 1029 |
| 483 | Ecosystem management | 7 | 96 | 379 | 605 |
| 485 | Pharmacokinetics | 5 | 95 | 603 | 837 |
| 486 | Solid State Physics | 2 | 94 | 3470 | 2595 |
| 487 | Magnetic Materials | 5 | 93 | 1194 | 1300 |
| 488 | Mental Disorders | 7 | 91 | 1550 | 2093 |
| 489 | Analytical Toxicology | 2 | 90 | 242 | 165 |
| 489 | natural products | 5 | 90 | 1393 | 1433 |
| 489 | drugs | 7 | 90 | 1195 | 1611 |
| 492 | Gender Studies | 3 | 89 | 531 | 469 |
| 492 | Queer Studies | 3 | 89 | 288 | 305 |
| 492 | Chemical Ecology | 6 | 89 | 342 | 592 |
| 492 | pheromones | 6 | 89 | 303 | 570 |
| 496 | Mental illness | 4 | 88 | 1330 | 1618 |
| 497 | Respiration | 5 | 87 | 988 | 1252 |
| 497 | biological invasions | 10 | 87 | 232 | 610 |
| 499 | Data Mining | 5 | 86 | 1204 | 1493 |
| 499 | Electron Microscopy | 1 | 86 | 634 | 331 |
| 501 | Orthopedic Surgery | 2 | 85 | 779 | 595 |
| 501 | forestry | 2 | 85 | 269 | 209 |
| 503 | Statistics | 12 | 84 | 1314 | 1686 |
| 503 | Automation | 7 | 84 | 1497 | 2001 |
| 503 | Business | 3 | 84 | 2149 | 2186 |
| 506 | Hematology | 1 | 83 | 1966 | 1470 |
| 506 | Manufacturing Processes | 3 | 83 | 2087 | 1923 |
| 506 | Production Engineering | 3 | 83 | 1864 | 1543 |
| 506 | Geriatric Oncology | 1 | 83 | 798 | 547 |
| 510 | Epidemiology | 7 | 82 | 1977 | 2587 |
| 510 | dietary supplements | 3 | 82 | 873 | 934 |
| 510 | data collection | 4 | 82 | 876 | 1082 |
| 513 | Rheology | 3 | 81 | 565 | 528 |
| 513 | Food texture | 3 | 81 | 155 | 164 |
| 513 | Parenteral nutrition | 4 | 81 | 704 | 940 |
| 513 | Carbon | 4 | 81 | 1084 | 1535 |
| 517 | Molecular ecology | 2 | 80 | 1066 | 1230 |
| 517 | Ethnology | 2 | 80 | 1707 | 981 |
| 517 | Classification | 4 | 80 | 191 | 235 |
| 517 | biochemical markers | 4 | 80 | 489 | 546 |
| 521 | Sociology | 11 | 79 | 1518 | 2406 |
| 521 | Biosensors | 4 | 79 | 1071 | 1631 |
| 521 | Social Psychology | 7 | 79 | 1415 | 1996 |
| 521 | Teaching | 9 | 79 | 977 | 1452 |
| 521 | Consciousness | 4 | 79 | 420 | 447 |
| 526 | symbiosis | 1 | 78 | 325 | 105 |
| 526 | Organometallic chemistry | 5 | 78 | 1716 | 1751 |
| 526 | Synthetic biology | 4 | 78 | 244 | 338 |
| 526 | food industry | 3 | 78 | 769 | 635 |
| 526 | Growth factors | 1 | 78 | 470 | 438 |
| 531 | Neuropsychology | 2 | 76 | 2250 | 1925 |
| 531 | Investment analysis | 2 | 76 | 1235 | 885 |
| 531 | Brain | 2 | 76 | 2400 | 2200 |
| 531 | North America | 13 | 76 | 271 | 644 |
| 535 | Palliative Care | 8 | 75 | 415 | 626 |
| 535 | bats | 4 | 75 | 69 | 80 |
| 535 | Learning | 8 | 75 | 752 | 1202 |
| 538 | Inflammation | 2 | 74 | 1171 | 1231 |
| 538 | Light | 5 | 74 | 669 | 1044 |
| 540 | Investments | 5 | 73 | 324 | 407 |
| 541 | Dynamics | 5 | 72 | 1285 | 1284 |
| 541 | Reservoirs | 8 | 72 | 54 | 115 |
| 543 | forest policy | 2 | 71 | 419 | 354 |
| 544 | Mechanical Engineering | 6 | 70 | 1754 | 1810 |
| 544 | Plant Taxonomy | 1 | 70 | 627 | 388 |
| 544 | food handling | 3 | 70 | 874 | 1156 |
| 544 | Intellectual disability | 7 | 70 | 471 | 731 |
| 548 | Child welfare | 9 | 69 | 546 | 975 |
| 549 | Animal Behavior | 5 | 68 | 1334 | 1862 |
| 549 | Enzyme inhibitors | 4 | 68 | 310 | 451 |
| 549 | Ethology | 5 | 68 | 1068 | 1601 |
| 549 | Genetic markers | 3 | 68 | 229 | 236 |
| 549 | weather forecasting | 2 | 68 | 220 | 219 |
| 549 | Thorax | 1 | 68 | 523 | 456 |
| 555 | Structural design | 3 | 67 | 841 | 819 |
| 555 | hospice care | 7 | 67 | 274 | 459 |
| 555 | complementary therapies | 4 | 67 | 1409 | 1697 |
| 558 | Alternative Medicine | 3 | 66 | 1458 | 1630 |
| 558 | Beetles | 19 | 66 | 18 | 31 |
| 558 | world | 2 | 66 | 833 | 975 |
| 558 | Meteorites | 1 | 66 | 1071 | 989 |
| 562 | Smoking | 4 | 65 | 572 | 843 |
| 562 | clay | 4 | 65 | 680 | 1108 |
| 562 | clay minerals | 4 | 65 | 219 | 359 |
| 565 | Clinical Biochemistry | 2 | 64 | 1195 | 1053 |
| 565 | Multivariate Analysis | 5 | 64 | 415 | 526 |
| 567 | Clinical Pharmacology | 3 | 63 | 1092 | 1161 |
| 567 | Psychometrics | 3 | 63 | 434 | 469 |
| 567 | Career development | 5 | 63 | 285 | 424 |
| 567 | Child | 6 | 63 | 1439 | 1927 |
| 567 | Protein folding | 2 | 63 | 102 | 104 |
| 567 | prions | 2 | 63 | 84 | 85 |
| 573 | industrial hygiene | 4 | 62 | 821 | 739 |
| 573 | Enteral nutrition | 3 | 62 | 705 | 927 |
| 575 | Technological Innovations | 2 | 61 | 1314 | 1235 |
| 575 | Water Microbiology | 2 | 61 | 570 | 580 |
| 575 | Proteome | 2 | 61 | 1127 | 1214 |
| 578 | Mental Health | 6 | 60 | 1026 | 1486 |
| 578 | human behavior | 5 | 60 | 1755 | 2903 |
| 580 | Organizational Behavior | 2 | 59 | 699 | 806 |
| 580 | Pesticide residues | 1 | 59 | 153 | 136 |
| 580 | computer networks | 5 | 59 | 1874 | 2316 |
| 583 | Serology | 6 | 58 | 266 | 595 |
| 583 | Photonics | 4 | 58 | 1478 | 1821 |
| 583 | Cell cycle | 1 | 58 | 500 | 368 |
| 583 | cell proliferation | 1 | 58 | 534 | 391 |
| 583 | Extreme environments | 1 | 58 | 434 | 389 |
| 583 | Phylogeny | 1 | 58 | 1263 | 1151 |
| 589 | Sustainable Development | 1 | 57 | 3064 | 2391 |
| 589 | Paleoclimatology | 2 | 57 | 1157 | 1194 |
| 589 | Freshwater invertebrates | 2 | 57 | 251 | 303 |
| 589 | counseling | 8 | 57 | 761 | 1237 |
| 593 | older people | 5 | 56 | 1140 | 1222 |
| 594 | System analysis | 3 | 55 | 2252 | 2348 |
| 595 | Combinatorial analysis | 7 | 54 | 668 | 755 |
| 595 | Flow cytometry | 1 | 54 | 523 | 426 |
| 597 | Industrial Engineering | 3 | 53 | 1692 | 1914 |
| 597 | emergency management | 1 | 53 | 1139 | 826 |
| 597 | nuclear magnetic resonance | 2 | 53 | 1029 | 873 |
| 597 | Nanoparticles | 3 | 53 | 1769 | 2026 |
| 597 | Magnetic Resonance Spectroscopy | 2 | 53 | 1198 | 991 |
| 597 | Probiotics | 2 | 53 | 238 | 286 |
| 597 | natural disasters | 1 | 53 | 1903 | 1577 |
| 604 | Physical Chemistry | 4 | 52 | 1770 | 2075 |
| 604 | ethnicity | 2 | 52 | 872 | 610 |
| 604 | Substance Abuse | 5 | 52 | 966 | 1348 |
| 604 | Drug delivery devices | 1 | 52 | 473 | 502 |
| 604 | Metals | 1 | 52 | 2543 | 1943 |
| 609 | Biodegradation | 1 | 51 | 1278 | 1106 |
| 609 | Fouling | 1 | 51 | 448 | 382 |
| 611 | Pharmacogenetics | 1 | 50 | 1163 | 1005 |
| 611 | Environmental Geography | 1 | 50 | 66 | 14 |
| 611 | Heat Exchangers | 1 | 50 | 1759 | 1631 |
| 611 | health and race | 1 | 50 | 357 | 263 |
| 611 | ethnic groups | 1 | 50 | 591 | 424 |
| 611 | pollutants | 5 | 50 | 1386 | 2356 |
| 611 | Environmental pollutants | 5 | 50 | 1663 | 2622 |
| 611 | Genetic therapy | 1 | 50 | 1190 | 1089 |
| 611 | Development | 1 | 50 | 1232 | 1084 |
| 611 | Economic Assistance | 1 | 50 | 1120 | 997 |
| 621 | Experimental Psychology | 3 | 49 | 593 | 688 |
| 621 | Pediatric Nursing | 3 | 49 | 345 | 460 |
| 621 | Metallurgy | 1 | 49 | 2673 | 1965 |
| 621 | Obstetric Nursing | 3 | 49 | 211 | 295 |
| 621 | Control Theory | 4 | 49 | 1507 | 1645 |
| 621 | Feminist criticism | 1 | 49 | 267 | 109 |
| 621 | Adolescent Psychology | 4 | 49 | 661 | 942 |
| 621 | land degradation | 3 | 49 | 480 | 741 |
| 621 | Bioelectronics | 2 | 49 | 1249 | 1714 |
| 621 | Aging | 6 | 49 | 1641 | 2306 |
| 621 | degradation | 3 | 49 | 480 | 741 |
| 632 | Animal Physiology | 1 | 48 | 260 | 235 |
| 632 | Natural selection | 1 | 48 | 260 | 235 |
| 632 | Mental Health Services | 5 | 48 | 782 | 1242 |
| 632 | Edible plants | 2 | 48 | 285 | 415 |
| 632 | animals | 1 | 48 | 1740 | 1176 |
| 632 | educational planning | 1 | 48 | 727 | 590 |
| 632 | genetic selection | 1 | 48 | 260 | 235 |
| 639 | Microcirculation | 1 | 47 | 724 | 599 |
| 639 | Smart Materials | 1 | 47 | 1485 | 1080 |
| 639 | Women's health | 6 | 47 | 741 | 1334 |
| 639 | DNA polymerases | 1 | 47 | 550 | 734 |
| 643 | Systems Engineering | 4 | 46 | 1902 | 2245 |
| 643 | Analytical Biochemistry | 4 | 46 | 1432 | 1832 |
| 643 | Photogrammetry | 5 | 46 | 600 | 473 |
| 646 | Self | 2 | 45 | 242 | 320 |
| 646 | Leisure | 2 | 45 | 421 | 498 |
| 646 | Mites | 9 | 45 | 163 | 425 |
| 649 | Intelligent Transportation Systems | 1 | 44 | 1607 | 1428 |
| 649 | Parallel Processing | 1 | 44 | 687 | 654 |
| 649 | disabilities | 6 | 44 | 423 | 826 |
| 652 | Anatomy | 6 | 43 | 1301 | 1905 |
| 652 | Solid State Chemistry | 3 | 43 | 2309 | 2494 |
| 652 | gastrointestinal tract | 1 | 43 | 542 | 644 |
| 655 | Immunopharmacology | 1 | 42 | 1505 | 1326 |
| 656 | Fluid Mechanics | 3 | 41 | 1396 | 1552 |
| 656 | Educational Psychology | 1 | 41 | 2003 | 1600 |
| 656 | Social work | 2 | 41 | 1547 | 1352 |
| 656 | Brain damage | 1 | 41 | 630 | 564 |
| 656 | eugenics | 3 | 41 | 497 | 685 |
| 661 | Maternal health services | 5 | 40 | 234 | 504 |
| 661 | embryonic development | 1 | 40 | 644 | 580 |
| 661 | plasma spraying | 1 | 40 | 403 | 305 |
| 664 | medical education | 3 | 39 | 1514 | 1752 |
| 665 | Robotics | 4 | 38 | 1450 | 1881 |
| 665 | supercritical fluids | 1 | 38 | 679 | 673 |
| 667 | Animal Biotechnology | 1 | 37 | 326 | 274 |
| 667 | Occupational Health | 2 | 37 | 1185 | 1144 |
| 667 | Mobile genetic elements | 3 | 37 | 75 | 195 |
| 667 | structural stability | 2 | 37 | 389 | 541 |
| 667 | Interferons | 1 | 37 | 477 | 426 |
| 667 | Mycotoxins | 2 | 37 | 183 | 217 |
| 667 | Product life cycle | 2 | 37 | 355 | 486 |
| 667 | green products | 2 | 37 | 313 | 466 |
| 667 | organization | 2 | 37 | 989 | 1209 |
| 667 | DNA | 3 | 37 | 572 | 783 |
| 667 | Australia | 3 | 37 | 1701 | 1946 |
| 678 | Special Education | 3 | 36 | 772 | 847 |
| 678 | moral development | 1 | 36 | 252 | 215 |
| 678 | Moral Education | 1 | 36 | 283 | 196 |
| 681 | Geriatric Nursing | 5 | 35 | 361 | 595 |
| 681 | Food Preservation | 3 | 35 | 826 | 965 |
| 681 | Natural resources | 1 | 35 | 1150 | 1073 |
| 681 | agricultural productivity | 1 | 35 | 136 | 139 |
| 681 | biological monitoring | 1 | 35 | 863 | 837 |
| 681 | Recycling | 1 | 35 | 1024 | 1318 |
| 681 | bees | 2 | 35 | 479 | 499 |
| 688 | Ecological Genetics | 3 | 34 | 625 | 788 |
| 688 | Econometrics | 5 | 34 | 1071 | 1407 |
| 688 | Sleep Disorders | 3 | 34 | 1233 | 1529 |
| 688 | Student Health Services | 3 | 34 | 272 | 438 |
| 692 | Plant Morphology | 2 | 33 | 747 | 842 |
| 692 | Nonlinear Dynamics | 2 | 33 | 1949 | 2036 |
| 692 | Graphene | 1 | 33 | 257 | 311 |
| 692 | glycoproteins | 1 | 33 | 674 | 700 |
| 692 | men | 1 | 33 | 594 | 494 |
| 692 | Glycoconjugates | 1 | 33 | 674 | 700 |
| 692 | Oligosaccharide | 1 | 33 | 484 | 534 |
| 692 | Carbohydrates | 1 | 33 | 673 | 677 |
| 692 | Transplantation | 2 | 33 | 864 | 1056 |
| 692 | Statistical physics | 2 | 33 | 3031 | 3143 |
| 692 | glycolipids | 1 | 33 | 674 | 700 |
| 703 | Information Systems | 3 | 32 | 1370 | 1906 |
| 703 | Neurovirology | 2 | 32 | 281 | 379 |
| 703 | Immunochemistry | 2 | 32 | 1071 | 1210 |
| 703 | Food preferences | 2 | 32 | 480 | 672 |
| 707 | Genetic Toxicology | 1 | 31 | 739 | 836 |
| 707 | greenhouse effect | 2 | 31 | 75 | 154 |
| 707 | Extracellular matrix | 1 | 31 | 375 | 471 |
| 707 | Carbon dioxide | 2 | 31 | 75 | 154 |
| 707 | natural gas | 1 | 31 | 610 | 649 |
| 707 | Sleep | 2 | 31 | 1474 | 1596 |
| 707 | collagen | 1 | 31 | 396 | 485 |
| 714 | Journalism | 3 | 30 | 564 | 635 |
| 714 | Developmental Psychology | 2 | 30 | 1170 | 1355 |
| 714 | Nanoelectronics | 2 | 30 | 910 | 896 |
| 714 | Bioinorganic chemistry | 2 | 30 | 1537 | 1783 |
| 718 | Civil Engineering | 9 | 29 | 819 | 1547 |
| 718 | Public Policy | 4 | 29 | 1422 | 2335 |
| 718 | Agricultural Economics | 2 | 29 | 95 | 132 |
| 718 | Telemedicine | 1 | 29 | 633 | 633 |
| 718 | Fermentation | 2 | 29 | 278 | 378 |
| 718 | Foodborne diseases | 4 | 29 | 163 | 440 |
| 718 | Quality of life | 3 | 29 | 1345 | 2097 |
| 718 | technical education | 3 | 29 | 677 | 960 |
| 718 | Microwaves | 2 | 29 | 1397 | 1365 |
| 727 | Quantum electronics | 1 | 28 | 2165 | 1778 |
| 727 | Drug targeting | 2 | 28 | 402 | 728 |
| 727 | Disease management | 1 | 28 | 196 | 156 |
| 727 | Acarology | 1 | 28 | 519 | 470 |
| 727 | Ticks | 1 | 28 | 503 | 469 |
| 727 | Acari | 1 | 28 | 503 | 469 |
| 733 | Medical genetics | 1 | 27 | 2283 | 2452 |
| 733 | Music | 1 | 27 | 1406 | 994 |
| 733 | health services accessibility | 2 | 27 | 1048 | 1271 |
| 733 | Combinatorial optimization | 2 | 27 | 686 | 608 |
| 733 | Quantum Gravity | 4 | 27 | 1683 | 2038 |
| 733 | adolescence | 1 | 27 | 1439 | 1342 |
| 733 | pain management | 1 | 27 | 856 | 798 |
| 733 | International Finance | 1 | 27 | 2246 | 2141 |
| 733 | foreign exchange | 1 | 27 | 599 | 634 |
| 733 | health services | 1 | 27 | 1525 | 1399 |
| 733 | weight loss | 1 | 27 | 258 | 271 |
| 744 | peptides | 3 | 26 | 772 | 1177 |
| 744 | Communication in politics | 1 | 26 | 518 | 366 |
| 744 | Social behavior | 2 | 26 | 1336 | 1611 |
| 744 | drug addiction | 2 | 26 | 1080 | 1440 |
| 744 | Psychiatric hospitals | 2 | 26 | 256 | 339 |
| 749 | Clinical Psychology | 3 | 25 | 1067 | 1587 |
| 749 | Informatics | 2 | 25 | 988 | 1264 |
| 749 | language | 2 | 25 | 966 | 1179 |
| 752 | Anti-inflammatory agents | 1 | 24 | 519 | 541 |
| 752 | healthcare disparities | 4 | 24 | 367 | 841 |
| 752 | Positive Psychology | 1 | 24 | 334 | 461 |
| 752 | Aquatic ecosystems | 2 | 24 | 196 | 257 |
| 752 | foods | 5 | 24 | 58 | 323 |
| 752 | heredity | 5 | 24 | 459 | 940 |
| 752 | Chemical industry | 1 | 24 | 1879 | 1703 |
| 759 | Ecological Engineering | 2 | 23 | 790 | 1373 |
| 759 | Agricultural Biotechnology | 4 | 23 | 231 | 362 |
| 759 | Adhesion | 3 | 23 | 721 | 1098 |
| 759 | Chemical processes | 2 | 23 | 722 | 899 |
| 759 | primary prevention | 3 | 23 | 364 | 780 |
| 759 | chronic disease | 3 | 23 | 257 | 494 |
| 759 | Population | 2 | 23 | 1014 | 1397 |
| 759 | adhesives | 3 | 23 | 767 | 1119 |
| 759 | synthesis | 3 | 23 | 1128 | 1382 |
| 759 | Forest genetics | 4 | 23 | 208 | 439 |
| 759 | Multiple sclerosis | 1 | 23 | 862 | 731 |
| 770 | Radiopharmaceuticals | 2 | 22 | 352 | 324 |
| 770 | community development | 3 | 22 | 584 | 972 |
| 770 | Biomechanics | 2 | 22 | 1438 | 1860 |
| 770 | Radioisotopes | 2 | 22 | 1195 | 1280 |
| 770 | Cell death | 3 | 22 | 927 | 1560 |
| 770 | Heterocyclic compounds | 4 | 22 | 873 | 1298 |
| 776 | consumer behavior | 2 | 21 | 680 | 1121 |
| 776 | Consumer Protection | 2 | 21 | 239 | 414 |
| 776 | election law | 1 | 21 | 435 | 416 |
| 776 | Developmental Immunology | 1 | 21 | 917 | 1059 |
| 776 | Taste | 1 | 21 | 581 | 615 |
| 776 | smell | 1 | 21 | 581 | 615 |
| 776 | plant viruses | 1 | 21 | 324 | 409 |
| 776 | consumers | 2 | 21 | 486 | 774 |
| 784 | Biochemical Genetics | 1 | 20 | 856 | 646 |
| 784 | Socialization | 1 | 20 | 885 | 1059 |
| 784 | particles | 1 | 20 | 1620 | 1683 |
| 784 | Africa | 3 | 20 | 1513 | 1834 |
| 784 | role | 1 | 20 | 760 | 947 |
| 784 | cell interaction | 2 | 20 | 1093 | 1565 |
| 790 | Chronobiology | 2 | 19 | 633 | 851 |
| 790 | Global Health | 2 | 19 | 1241 | 1626 |
| 790 | Photography | 1 | 19 | 1442 | 718 |
| 790 | Vocational Education | 2 | 19 | 625 | 836 |
| 790 | Neurosurgery | 1 | 19 | 1150 | 1241 |
| 790 | Number Theory | 4 | 19 | 718 | 909 |
| 790 | Circadian rhythms | 2 | 19 | 477 | 749 |
| 790 | biological clocks | 2 | 19 | 633 | 851 |
| 790 | Measurement | 1 | 19 | 2028 | 2059 |
| 790 | Drying | 2 | 19 | 479 | 764 |
| 790 | circadian rhythm | 2 | 19 | 633 | 851 |
| 790 | biological rhythms | 2 | 19 | 607 | 834 |
| 790 | insecticides | 109 | 19 | 20 | 24 |
| 790 | Information Science | 1 | 19 | 3468 | 3477 |
| 790 | women | 2 | 19 | 1098 | 1165 |
| 805 | Environmental Law | 1 | 18 | 1497 | 1887 |
| 805 | Leadership | 3 | 18 | 530 | 1140 |
| 805 | Eating Disorders | 1 | 18 | 1172 | 1266 |
| 805 | Feeding and Eating Disorders | 1 | 18 | 1125 | 1224 |
| 809 | Geotechnical Engineering | 2 | 17 | 565 | 756 |
| 809 | Telecommunications | 2 | 17 | 1019 | 1308 |
| 809 | Neonatology | 2 | 17 | 692 | 1054 |
| 809 | Probability | 1 | 17 | 916 | 981 |
| 809 | Risk Management | 1 | 17 | 1154 | 1219 |
| 809 | Coastal zone management | 1 | 17 | 1076 | 1270 |
| 809 | Antibacterial agents | 1 | 17 | 935 | 1239 |
| 809 | Neural circuitry | 1 | 17 | 2716 | 2948 |
| 809 | Primary health care | 2 | 17 | 1698 | 2298 |
| 809 | Social Change | 1 | 17 | 1630 | 2063 |
| 809 | Financial management | 1 | 17 | 789 | 996 |
| 809 | Plastics | 1 | 17 | 2293 | 2286 |
| 809 | protein | 3 | 17 | 1085 | 1643 |
| 809 | Marine resources | 1 | 17 | 1105 | 1313 |
| 809 | crops | 5 | 17 | 72 | 289 |
| 809 | United Kingdom | 2 | 17 | 1492 | 1986 |
| 809 | Semiconductor industry | 1 | 17 | 929 | 934 |
| 826 | Ophthalmology | 1 | 16 | 1887 | 2073 |
| 826 | Astronomy | 2 | 16 | 2440 | 2865 |
| 826 | Physical Geography | 3 | 16 | 490 | 924 |
| 826 | Food Policy | 1 | 16 | 537 | 749 |
| 826 | Histochemistry | 1 | 16 | 1432 | 1482 |
| 826 | occupational health and safety | 1 | 16 | 206 | 213 |
| 826 | agricultural policy | 1 | 16 | 414 | 626 |
| 826 | histological techniques | 1 | 16 | 859 | 1056 |
| 826 | libraries | 10 | 16 | 220 | 766 |
| 826 | Sociobiology | 1 | 16 | 418 | 468 |
| 826 | Fungi | 2 | 16 | 1092 | 1589 |
| 837 | Criminology | 2 | 15 | 1050 | 1282 |
| 837 | Surveying | 1 | 15 | 265 | 193 |
| 837 | Mechatronics | 1 | 15 | 1413 | 1554 |
| 837 | Forensic Genetics | 1 | 15 | 394 | 495 |
| 837 | Origin of life | 1 | 15 | 263 | 324 |
| 837 | nucleotides | 1 | 15 | 557 | 472 |
| 837 | Arthropods | 2 | 15 | 312 | 576 |
| 837 | Building | 2 | 15 | 671 | 853 |
| 837 | probabilities | 1 | 15 | 1776 | 1526 |
| 837 | biomedicine | 2 | 15 | 616 | 1133 |
| 837 | Organelle biogenesis | 1 | 15 | 387 | 461 |
| 837 | wetland management | 1 | 15 | 360 | 458 |
| 849 | Industrial Organization | 2 | 14 | 401 | 676 |
| 849 | Criminal psychology | 2 | 14 | 854 | 1119 |
| 849 | Political Sociology | 1 | 14 | 797 | 794 |
| 849 | dual diagnosis | 1 | 14 | 188 | 196 |
| 849 | Holistic Health | 1 | 14 | 886 | 934 |
| 849 | population policy | 1 | 14 | 281 | 344 |
| 849 | Radio waves | 1 | 14 | 1156 | 1284 |
| 849 | allied health | 1 | 14 | 504 | 584 |
| 849 | energy crops | 2 | 14 | 17 | 27 |
| 858 | Humanities | 2 | 13 | 2382 | 2741 |
| 858 | Combustion | 1 | 13 | 1689 | 1905 |
| 858 | Apoptosis | 1 | 13 | 515 | 800 |
| 858 | neurotoxins | 1 | 13 | 515 | 800 |
| 858 | Semiconductors | 1 | 13 | 2737 | 2767 |
| 858 | Neurotoxic agents | 1 | 13 | 515 | 800 |
| 858 | Quantitative Research | 1 | 13 | 367 | 515 |
| 858 | Social welfare | 1 | 13 | 961 | 1022 |
| 858 | Mass Spectrometry | 1 | 13 | 1469 | 1625 |
| 858 | Neuromuscular diseases | 1 | 13 | 797 | 960 |
| 858 | calcification | 2 | 13 | 550 | 906 |
| 858 | immigrants | 2 | 13 | 40 | 77 |
| 858 | student | 1 | 13 | 136 | 174 |
| 858 | Reading | 2 | 13 | 687 | 1031 |
| 858 | Literacy | 2 | 13 | 392 | 567 |
| 858 | Muscles | 1 | 13 | 1060 | 1284 |
| 858 | Nerve regeneration | 1 | 13 | 515 | 800 |
| 875 | Geriatric Medicine | 1 | 12 | 322 | 458 |
| 875 | Kinetics | 1 | 12 | 902 | 1040 |
| 875 | economic forecasting | 1 | 12 | 599 | 725 |
| 875 | Forecasting | 1 | 12 | 950 | 1037 |
| 875 | Diagnosis | 1 | 12 | 666 | 802 |
| 875 | Quantum Optics | 1 | 12 | 1255 | 1354 |
| 875 | Chemical kinetics | 1 | 12 | 1277 | 1251 |
| 875 | child sexual abuse | 1 | 12 | 311 | 431 |
| 875 | disease susceptibility | 1 | 12 | 115 | 257 |
| 875 | Atomic spectroscopy | 1 | 12 | 1535 | 1687 |
| 875 | Laser Spectroscopy | 1 | 12 | 1195 | 1298 |
| 875 | symptoms | 1 | 12 | 115 | 257 |
| 887 | Cryptography | 2 | 11 | 851 | 990 |
| 887 | Multicultural Education | 1 | 11 | 727 | 781 |
| 887 | Computer-Aided Design | 1 | 11 | 1816 | 2034 |
| 887 | Oncogenes | 1 | 11 | 1132 | 1528 |
| 887 | Coding Theory | 2 | 11 | 476 | 605 |
| 887 | Adaptive control systems | 2 | 11 | 754 | 1136 |
| 887 | Harmonic Analysis | 1 | 11 | 286 | 383 |
| 887 | Food Security | 1 | 11 | 314 | 523 |
| 887 | Elderly | 3 | 11 | 1132 | 1389 |
| 887 | Finite Element Method | 1 | 11 | 573 | 718 |
| 887 | Microscopy | 1 | 11 | 1990 | 2089 |
| 887 | race relations | 2 | 11 | 726 | 1041 |
| 887 | sports injuries | 2 | 11 | 683 | 1060 |
| 900 | Occupational Therapy | 1 | 10 | 1545 | 1463 |
| 900 | Feminist criminology | 1 | 10 | 114 | 201 |
| 900 | Geriatric Psychiatry | 2 | 10 | 1032 | 1648 |
| 900 | infrared radiation | 1 | 10 | 1004 | 1151 |
| 900 | infection | 2 | 10 | 1489 | 2253 |
| 900 | built environment | 1 | 10 | 39 | 47 |
| 900 | industrial relations | 1 | 10 | 1315 | 1512 |
| 900 | Social interaction | 2 | 10 | 432 | 834 |
| 900 | drainage | 1 | 10 | 508 | 590 |
| 900 | body temperature | 1 | 10 | 990 | 1285 |
| 900 | human development | 2 | 10 | 936 | 1602 |
| 900 | Criminal behavior | 1 | 10 | 338 | 430 |
| 900 | infrared technology | 1 | 10 | 371 | 352 |
| 900 | Liquid chromatography | 2 | 10 | 641 | 931 |
| 914 | Urban Planning | 1 | 9 | 696 | 966 |
| 914 | Graph Theory | 3 | 9 | 769 | 1102 |
| 914 | Discrete Mathematics | 3 | 9 | 365 | 557 |
| 914 | Arboriculture | 1 | 9 | 100 | 114 |
| 914 | Risk assessment | 1 | 9 | 1158 | 1475 |
| 914 | Housing | 1 | 9 | 837 | 1127 |
| 914 | graph | 3 | 9 | 365 | 557 |
| 914 | Hospitals | 1 | 9 | 556 | 690 |
| 914 | Japan | 1 | 9 | 2555 | 2783 |
| 914 | urban forestry | 1 | 9 | 553 | 794 |
| 914 | tree planting | 1 | 9 | 43 | 36 |
| 925 | Telecommunication Systems | 1 | 8 | 2295 | 2506 |
| 925 | Power Electronics | 1 | 8 | 1354 | 1624 |
| 925 | Demography | 1 | 8 | 1002 | 1240 |
| 925 | Municipal Engineering | 1 | 8 | 685 | 1037 |
| 925 | Nuclear Chemistry | 1 | 8 | 1550 | 1697 |
| 925 | Waste management | 1 | 8 | 2043 | 2459 |
| 925 | Marine Pollution | 1 | 8 | 1736 | 2312 |
| 925 | Randomized Controlled Trials | 1 | 8 | 1291 | 1567 |
| 925 | Speech Disorders | 1 | 8 | 1312 | 1565 |
| 925 | Family Therapy | 1 | 8 | 1155 | 1394 |
| 925 | international trade | 2 | 8 | 920 | 1487 |
| 936 | Obstetrics | 1 | 7 | 2351 | 2842 |
| 936 | Fashion Design | 1 | 7 | 93 | 149 |
| 936 | Epigenetics | 1 | 7 | 430 | 675 |
| 936 | Bioethics | 1 | 7 | 1400 | 1622 |
| 936 | Medical Ethics | 1 | 7 | 1616 | 1876 |
| 936 | Epigenomics | 1 | 7 | 421 | 666 |
| 936 | electric vehicles | 1 | 7 | 519 | 742 |
| 936 | Fiber Optics | 2 | 7 | 1039 | 1582 |
| 936 | Animal welfare | 1 | 7 | 516 | 803 |
| 936 | Experience | 1 | 7 | 95 | 180 |
| 936 | Stem cells | 1 | 7 | 1532 | 1982 |
| 936 | Hospitality industry | 1 | 7 | 812 | 1313 |
| 936 | environmental exposure | 2 | 7 | 2067 | 3306 |
| 936 | Tunneling | 1 | 7 | 532 | 810 |
| 936 | underground construction | 1 | 7 | 532 | 810 |
| 936 | Military psychology | 1 | 7 | 194 | 314 |
| 936 | Culture | 1 | 7 | 1697 | 1780 |
| 936 | alcohol | 1 | 7 | 163 | 228 |
| 936 | Eigenvalues | 1 | 7 | 431 | 272 |
| 936 | Textile industry | 1 | 7 | 832 | 972 |
| 956 | Archaeology | 5 | 6 | 988 | 1883 |
| 956 | Marine Engineering | 1 | 6 | 463 | 530 |
| 956 | Hydrogeology | 1 | 6 | 1055 | 1437 |
| 956 | Geometry | 1 | 6 | 1660 | 1635 |
| 956 | International Relations | 1 | 6 | 1526 | 1561 |
| 956 | American Literature | 6 | 6 | 426 | 348 |
| 956 | Higher Education | 1 | 6 | 1111 | 1427 |
| 956 | Visual Communication | 1 | 6 | 837 | 1089 |
| 956 | Morphology | 3 | 6 | 892 | 1542 |
| 956 | Comparative Education | 1 | 6 | 474 | 694 |
| 956 | Hypertension | 1 | 6 | 1517 | 1985 |
| 956 | Electromagnetism | 1 | 6 | 1456 | 1709 |
| 956 | Education policy | 1 | 6 | 172 | 357 |
| 956 | Sensor Networks | 1 | 6 | 529 | 693 |
| 956 | Discrete geometry | 1 | 6 | 439 | 521 |
| 956 | Happiness | 1 | 6 | 870 | 1313 |
| 956 | International Education | 1 | 6 | 499 | 791 |
| 956 | Lightweight concrete | 1 | 6 | 700 | 1105 |
| 956 | Watershed management | 1 | 6 | 515 | 781 |
| 956 | visualization | 6 | 6 | 930 | 1873 |
| 956 | Groundwater | 1 | 6 | 840 | 1231 |
| 956 | refugees | 1 | 6 | 434 | 626 |
| 956 | Asia | 1 | 6 | 3996 | 4401 |
| 956 | Borderlands | 1 | 6 | 150 | 259 |
| 956 | concrete | 1 | 6 | 1311 | 1728 |
| 956 | biological agents | 3 | 6 | 709 | 1224 |
| 956 | rehabilitation | 1 | 6 | 2717 | 3359 |
| 956 | Solar System | 1 | 6 | 977 | 1214 |
| 984 | Materials Engineering | 1 | 5 | 1304 | 1708 |
| 984 | Restorative justice | 1 | 5 | 342 | 469 |
| 984 | Juvenile delinquency | 1 | 5 | 516 | 691 |
| 984 | Neuropharmacology | 1 | 5 | 885 | 1218 |
| 984 | Mechanics | 1 | 5 | 1914 | 2261 |
| 984 | geological modeling | 1 | 5 | 939 | 1323 |
| 984 | land | 1 | 5 | 136 | 190 |
| 984 | crime | 1 | 5 | 1012 | 1223 |
| 984 | drug abuse | 1 | 5 | 953 | 1338 |
| 984 | packaging | 1 | 5 | 257 | 481 |
| 994 | Public Relations | 1 | 4 | 807 | 1200 |
| 994 | Health Services Research | 1 | 4 | 2061 | 2794 |
| 994 | Marine Geology | 1 | 4 | 900 | 1225 |
| 994 | Long-Term Care | 1 | 4 | 752 | 1114 |
| 994 | Biotelemetry | 1 | 4 | 149 | 266 |
| 994 | Long-term care facilities | 1 | 4 | 746 | 1101 |
| 994 | Marine Geophysics | 1 | 4 | 491 | 724 |