| 1 | Science | 273 | 10.3K | 822 | 1049 |
| 2 | Research | 248 | 7.7K | 773 | 766 |
| 3 | Medicine | 350 | 7.4K | 724 | 1002 |
| 4 | Pollution | 116 | 6.6K | 725 | 659 |
| 5 | Biology | 132 | 5.9K | 1200 | 1403 |
| 6 | Chemistry | 180 | 5.8K | 1432 | 1457 |
| 7 | Physics | 127 | 5.5K | 1591 | 1545 |
| 8 | Ecology | 105 | 5.3K | 975 | 924 |
| 9 | Public Health | 171 | 5.3K | 478 | 491 |
| 10 | Environmental Health | 106 | 4.5K | 684 | 674 |
| 11 | Oncology | 3 | 4.2K | 1669 | 414 |
| 12 | Geochemistry | 35 | 4.0K | 560 | 300 |
| 13 | Environmental monitoring | 80 | 3.9K | 477 | 444 |
| 14 | environmental pollution | 59 | 3.5K | 891 | 677 |
| 15 | Epidemiology | 71 | 3.3K | 550 | 410 |
| 16 | Chemical Engineering | 35 | 3.2K | 1492 | 900 |
| 17 | Cosmochemistry | 25 | 3.0K | 194 | 52 |
| 18 | Biochemistry | 132 | 2.9K | 1463 | 1700 |
| 19 | Earth Sciences | 58 | 2.7K | 630 | 468 |
| 20 | Nutrition | 78 | 2.6K | 651 | 667 |
| 21 | Polymers | 130 | 2.4K | 678 | 835 |
| 22 | mass transfer | 61 | 2.3K | 222 | 214 |
| 23 | Renewable Energy Sources | 54 | 2.3K | 391 | 624 |
| 24 | Environmental Engineering | 58 | 2.2K | 634 | 653 |
| 25 | Molecular Biology | 81 | 2.1K | 1526 | 1770 |
| 26 | Environment | 40 | 2.1K | 1247 | 1343 |
| 27 | Natural history | 4 | 2.0K | 2474 | 1387 |
| 28 | polymerization | 102 | 2.0K | 638 | 771 |
| 29 | Information Science | 49 | 2.0K | 385 | 349 |
| 30 | Toxicology | 32 | 1.9K | 1359 | 954 |
| 31 | Engineering | 128 | 1.9K | 352 | 540 |
| 32 | Microbiology | 86 | 1.9K | 1108 | 1486 |
| 33 | Composite Materials | 33 | 1.8K | 779 | 652 |
| 34 | environmental protection | 42 | 1.8K | 755 | 651 |
| 35 | Energy Policy | 39 | 1.8K | 580 | 602 |
| 36 | Biochemical Engineering | 16 | 1.8K | 1446 | 997 |
| 36 | Medical Microbiology | 19 | 1.8K | 756 | 491 |
| 38 | Environmental Management | 12 | 1.8K | 1433 | 631 |
| 39 | Developing countries | 65 | 1.8K | 250 | 294 |
| 40 | Biomedical Engineering | 52 | 1.7K | 1128 | 1080 |
| 41 | Pharmacognosy | 43 | 1.7K | 316 | 306 |
| 42 | Food | 38 | 1.7K | 724 | 607 |
| 43 | Asia | 142 | 1.7K | 97 | 168 |
| 44 | Diet | 25 | 1.6K | 546 | 457 |
| 45 | Economic History | 62 | 1.6K | 541 | 452 |
| 46 | Analytical Chemistry | 35 | 1.4K | 1398 | 1166 |
| 47 | Biotechnology | 49 | 1.4K | 1394 | 1618 |
| 48 | Environmental Toxicology | 16 | 1.3K | 922 | 540 |
| 49 | environmental indicators | 3 | 1.3K | 1131 | 131 |
| 50 | Combustion | 24 | 1.3K | 358 | 228 |
| 50 | Colloids | 31 | 1.3K | 1273 | 1139 |
| 52 | Surface Chemistry | 26 | 1.3K | 1414 | 1123 |
| 53 | Biocompatible Materials | 24 | 1.2K | 1309 | 1253 |
| 54 | Hydrology | 23 | 1.2K | 771 | 533 |
| 55 | Materials | 31 | 1.2K | 2029 | 1740 |
| 56 | Environmental Policy | 33 | 1.2K | 814 | 953 |
| 57 | Drug delivery systems | 3 | 1.2K | 1492 | 359 |
| 58 | Technology | 33 | 1.2K | 1072 | 844 |
| 59 | Geophysics | 36 | 1.1K | 993 | 962 |
| 60 | Hydrogeology | 12 | 1.1K | 214 | 61 |
| 61 | Medicinal plants | 21 | 1.1K | 339 | 295 |
| 62 | Nanotechnology | 48 | 1.1K | 1297 | 1594 |
| 63 | computer networks | 19 | 1.1K | 926 | 544 |
| 64 | Building Materials | 14 | 1.1K | 829 | 617 |
| 65 | Logistics | 4 | 1.0K | 474 | 82 |
| 66 | Water | 21 | 1.0K | 871 | 860 |
| 67 | Genetics | 24 | 1.0K | 1099 | 1115 |
| 68 | Plastics | 69 | 1.0K | 125 | 264 |
| 69 | Medical Technology | 5 | 993 | 1097 | 269 |
| 69 | food technology | 25 | 993 | 792 | 683 |
| 71 | Environmental Geology | 23 | 977 | 428 | 312 |
| 71 | Bioinformatics | 41 | 977 | 394 | 552 |
| 73 | Environmental pollutants | 13 | 973 | 978 | 548 |
| 74 | natural disasters | 30 | 960 | 178 | 228 |
| 75 | Mathematics | 75 | 958 | 1507 | 1391 |
| 76 | Botany | 44 | 948 | 1028 | 1276 |
| 77 | Alternative Medicine | 26 | 931 | 272 | 191 |
| 78 | environmental exposure | 13 | 925 | 800 | 449 |
| 79 | Geology | 30 | 909 | 968 | 872 |
| 80 | Nuclear Physics | 95 | 907 | 975 | 1409 |
| 81 | sanitation | 16 | 882 | 555 | 657 |
| 82 | Transportation | 6 | 864 | 1103 | 456 |
| 83 | pollutants | 11 | 859 | 862 | 507 |
| 84 | Computational Biology | 40 | 843 | 505 | 716 |
| 85 | Environmental Chemistry | 13 | 838 | 870 | 746 |
| 86 | Sociology | 43 | 833 | 629 | 757 |
| 87 | Meteorites | 4 | 817 | 696 | 409 |
| 88 | Economic Development | 28 | 796 | 363 | 489 |
| 89 | Materials Science | 32 | 793 | 1435 | 1558 |
| 90 | Water pollution | 25 | 774 | 894 | 1010 |
| 91 | Sedimentary rocks | 6 | 771 | 401 | 118 |
| 92 | Economics | 46 | 767 | 1104 | 1184 |
| 93 | complementary therapies | 19 | 760 | 415 | 269 |
| 94 | marketing | 20 | 751 | 715 | 716 |
| 95 | Sustainable Development | 26 | 747 | 392 | 575 |
| 96 | Cement | 2 | 737 | 683 | 259 |
| 97 | Vaccines | 21 | 733 | 484 | 436 |
| 98 | Pharmaceutical Chemistry | 25 | 698 | 1255 | 1296 |
| 99 | Library Science | 46 | 693 | 74 | 56 |
| 100 | Development | 17 | 684 | 219 | 252 |
| 101 | Business | 16 | 676 | 912 | 949 |
| 101 | water supply | 8 | 676 | 459 | 315 |
| 101 | nanoscience | 24 | 676 | 1008 | 1173 |
| 104 | Adolescent | 16 | 675 | 765 | 565 |
| 105 | Atmospheric Physics | 15 | 673 | 605 | 551 |
| 106 | United States | 34 | 672 | 1325 | 1427 |
| 107 | Social work | 21 | 665 | 466 | 299 |
| 108 | Image Processing | 12 | 663 | 1124 | 786 |
| 109 | Pharmacy | 7 | 653 | 1269 | 657 |
| 110 | gene mapping | 9 | 650 | 950 | 694 |
| 111 | hazard mitigation | 21 | 649 | 140 | 177 |
| 112 | Optics | 34 | 648 | 1406 | 1256 |
| 113 | world | 19 | 646 | 180 | 274 |
| 114 | Health Policy | 28 | 644 | 556 | 598 |
| 115 | Social Sciences | 40 | 639 | 759 | 829 |
| 116 | natural products | 40 | 636 | 301 | 444 |
| 117 | Pharmacology | 24 | 622 | 1735 | 1806 |
| 118 | Education | 32 | 613 | 1038 | 970 |
| 119 | Production Management | 11 | 604 | 547 | 596 |
| 120 | Psychiatry | 33 | 594 | 1136 | 1435 |
| 121 | Astronomy | 5 | 590 | 1885 | 1179 |
| 122 | Groundwater | 12 | 587 | 200 | 126 |
| 123 | Genetic algorithms | 1 | 575 | 543 | 170 |
| 123 | Evolutionary Computation | 1 | 575 | 836 | 207 |
| 125 | Climatology | 19 | 572 | 601 | 660 |
| 126 | Economic Assistance | 12 | 571 | 253 | 263 |
| 127 | Bioengineering | 28 | 567 | 1292 | 1811 |
| 128 | Organic Chemistry | 22 | 549 | 1267 | 1238 |
| 129 | Bioorganic chemistry | 15 | 547 | 1267 | 1133 |
| 130 | Industrial Microbiology | 23 | 544 | 520 | 820 |
| 131 | Biophysics | 27 | 541 | 1801 | 2070 |
| 132 | Recycling | 5 | 538 | 410 | 304 |
| 133 | Engineering Geology | 15 | 528 | 577 | 521 |
| 134 | energy conservation | 11 | 523 | 1006 | 982 |
| 135 | Electrochemistry | 34 | 519 | 1320 | 1469 |
| 136 | Numerical Analysis | 23 | 518 | 834 | 672 |
| 137 | concrete | 1 | 515 | 1311 | 491 |
| 138 | Geomorphology | 5 | 504 | 1042 | 636 |
| 139 | Electrical Engineering | 15 | 493 | 1482 | 864 |
| 140 | Mechanical Engineering | 26 | 491 | 788 | 671 |
| 140 | Nanostructured Materials | 22 | 491 | 1224 | 1424 |
| 142 | Marine Biology | 34 | 486 | 721 | 1068 |
| 142 | Radiation | 28 | 486 | 570 | 612 |
| 144 | Clinical Chemistry | 13 | 484 | 1141 | 1109 |
| 145 | Meteorology | 21 | 479 | 725 | 998 |
| 146 | water reuse | 10 | 466 | 63 | 48 |
| 147 | management | 22 | 463 | 1289 | 1618 |
| 148 | Diabetes mellitus | 14 | 453 | 760 | 849 |
| 148 | Diabetes | 14 | 453 | 793 | 869 |
| 150 | Pediatrics | 13 | 452 | 936 | 918 |
| 150 | health planning | 23 | 452 | 649 | 646 |
| 152 | occupational diseases | 7 | 450 | 423 | 272 |
| 153 | Industrial Engineering | 9 | 449 | 988 | 702 |
| 154 | health services accessibility | 19 | 444 | 244 | 288 |
| 155 | Manufacturing Processes | 10 | 437 | 1269 | 957 |
| 156 | Social Change | 14 | 436 | 341 | 571 |
| 157 | DNA polymerases | 1 | 435 | 550 | 295 |
| 158 | Psychology | 33 | 433 | 1392 | 1776 |
| 158 | Fisheries | 9 | 433 | 822 | 586 |
| 160 | lasers | 19 | 432 | 821 | 720 |
| 161 | Mental Disorders | 20 | 424 | 913 | 1177 |
| 162 | Virology | 21 | 422 | 910 | 1405 |
| 163 | Pathology | 5 | 420 | 1244 | 871 |
| 164 | Soil Science | 11 | 418 | 915 | 848 |
| 165 | Child welfare | 11 | 413 | 465 | 333 |
| 166 | Cell Biology | 34 | 410 | 1083 | 1830 |
| 167 | Transport | 7 | 406 | 314 | 228 |
| 167 | Sea | 7 | 406 | 276 | 181 |
| 167 | Fishery resources | 7 | 406 | 313 | 198 |
| 170 | Metabolic diseases | 13 | 402 | 900 | 1053 |
| 171 | Herbal medicine | 4 | 400 | 589 | 282 |
| 172 | global environmental change | 4 | 396 | 655 | 414 |
| 173 | China | 19 | 392 | 1014 | 1010 |
| 174 | Immunotherapy | 7 | 383 | 1006 | 859 |
| 175 | coal | 5 | 382 | 1226 | 891 |
| 176 | Evidence-Based Medicine | 6 | 381 | 398 | 178 |
| 177 | Global Health | 28 | 380 | 167 | 245 |
| 178 | Optical materials | 10 | 371 | 1462 | 1409 |
| 179 | Tropical Medicine | 13 | 370 | 727 | 570 |
| 180 | economic policy | 29 | 362 | 644 | 746 |
| 181 | energy resources | 11 | 353 | 636 | 960 |
| 182 | Sleep | 5 | 347 | 1014 | 613 |
| 183 | Environmental Geochemistry | 11 | 346 | 115 | 95 |
| 183 | Minerals | 11 | 346 | 251 | 222 |
| 185 | Coastal zone management | 6 | 345 | 409 | 224 |
| 185 | Marine resources | 6 | 345 | 402 | 231 |
| 187 | Health Services Research | 11 | 344 | 688 | 581 |
| 188 | Nuclear Energy | 51 | 342 | 142 | 304 |
| 188 | Sleep Disorders | 4 | 342 | 1100 | 613 |
| 190 | Cancer | 9 | 340 | 1426 | 1458 |
| 191 | Statistics | 48 | 338 | 625 | 964 |
| 192 | Nuclear Engineering | 53 | 336 | 249 | 452 |
| 193 | Information Technology | 15 | 335 | 979 | 1089 |
| 193 | Endocrinology | 13 | 335 | 1190 | 1394 |
| 195 | finance | 15 | 334 | 1053 | 1016 |
| 196 | Human Geography | 7 | 333 | 676 | 451 |
| 196 | Food Microbiology | 9 | 333 | 595 | 718 |
| 198 | Quality Control | 15 | 332 | 554 | 731 |
| 199 | actuators | 7 | 326 | 1455 | 1230 |
| 199 | transducers | 7 | 326 | 1455 | 1230 |
| 201 | Health Information Management | 1 | 318 | 661 | 318 |
| 202 | Public Administration | 29 | 317 | 334 | 536 |
| 203 | Water quality management | 9 | 316 | 970 | 703 |
| 204 | Solar Energy | 16 | 314 | 612 | 1026 |
| 205 | biological factors | 17 | 311 | 694 | 886 |
| 206 | Telemedicine | 6 | 310 | 156 | 114 |
| 206 | Statistical physics | 31 | 310 | 1190 | 1619 |
| 208 | International Finance | 14 | 309 | 747 | 825 |
| 209 | Tribology | 9 | 307 | 623 | 503 |
| 210 | Geographic information systems | 14 | 306 | 355 | 315 |
| 211 | Foodborne diseases | 7 | 305 | 90 | 63 |
| 212 | Signal Processing | 12 | 304 | 1316 | 1338 |
| 212 | Virulence | 3 | 304 | 900 | 738 |
| 214 | Biomass Energy | 17 | 302 | 970 | 1558 |
| 215 | India | 36 | 301 | 147 | 180 |
| 216 | Child | 12 | 300 | 1035 | 1044 |
| 217 | Marine Pollution | 15 | 299 | 432 | 711 |
| 218 | Molecular Microbiology | 2 | 298 | 869 | 605 |
| 218 | Bacterial diseases | 2 | 298 | 344 | 85 |
| 220 | Nutrition physiology | 14 | 296 | 219 | 357 |
| 221 | Quality of life | 7 | 292 | 857 | 748 |
| 222 | Artificial Intelligence | 20 | 291 | 1497 | 1977 |
| 223 | Optical Communications | 4 | 288 | 651 | 254 |
| 224 | plant molecular biology | 4 | 286 | 1164 | 1024 |
| 224 | Agriculture | 20 | 286 | 645 | 993 |
| 224 | Plants | 8 | 286 | 1174 | 1144 |
| 227 | Plant physiology | 9 | 285 | 1220 | 1326 |
| 228 | Microbial Ecology | 9 | 281 | 1161 | 1413 |
| 229 | Cytology | 31 | 277 | 1196 | 2160 |
| 230 | United Kingdom | 14 | 276 | 602 | 790 |
| 231 | Recombinant DNA | 9 | 272 | 788 | 751 |
| 232 | Tourism | 13 | 270 | 700 | 1103 |
| 233 | Engineering Mathematics | 15 | 266 | 760 | 747 |
| 233 | Semiconductors | 12 | 266 | 1063 | 909 |
| 235 | genome | 3 | 264 | 1245 | 953 |
| 235 | environmental issues | 1 | 264 | 770 | 184 |
| 237 | Drying | 5 | 261 | 259 | 150 |
| 237 | Pacific Islands | 17 | 261 | 48 | 44 |
| 239 | Social welfare | 13 | 259 | 212 | 204 |
| 240 | Atmospheric Chemistry | 6 | 257 | 572 | 628 |
| 240 | rehabilitation | 6 | 257 | 1398 | 1092 |
| 242 | Decision making | 5 | 254 | 1068 | 720 |
| 243 | commerce | 15 | 253 | 555 | 824 |
| 244 | Nanostructures | 10 | 249 | 1056 | 1198 |
| 245 | Wireless Communication Systems | 14 | 247 | 1114 | 1204 |
| 246 | soil microbiology | 5 | 246 | 1034 | 1116 |
| 246 | industrial relations | 1 | 246 | 1314 | 330 |
| 248 | Agricultural Chemistry | 9 | 244 | 1230 | 1295 |
| 248 | city planning | 7 | 244 | 995 | 818 |
| 250 | Production Engineering | 8 | 243 | 1194 | 910 |
| 250 | air quality | 11 | 243 | 20 | 45 |
| 252 | Geography | 14 | 239 | 877 | 1123 |
| 252 | Systems Engineering | 6 | 239 | 1558 | 1163 |
| 252 | Landscape Architecture | 2 | 239 | 197 | 12 |
| 255 | Plant Ecology | 7 | 238 | 1083 | 1143 |
| 256 | East Asia | 6 | 236 | 365 | 117 |
| 257 | Computer Science | 15 | 235 | 798 | 846 |
| 258 | human behavior | 5 | 234 | 1755 | 1783 |
| 258 | disaster relief | 7 | 234 | 72 | 66 |
| 260 | Obstetrics | 10 | 232 | 1089 | 1074 |
| 260 | Genetic engineering | 10 | 232 | 1004 | 1192 |
| 260 | Spectrum analysis | 14 | 232 | 2092 | 2305 |
| 263 | Obesity | 5 | 231 | 1253 | 1126 |
| 264 | food industry | 4 | 227 | 623 | 243 |
| 265 | Solid State Physics | 16 | 225 | 1838 | 1986 |
| 265 | nucleic acids | 5 | 225 | 1097 | 1080 |
| 267 | Magnetic Materials | 6 | 224 | 1107 | 905 |
| 267 | pharmaceutical industry | 10 | 224 | 227 | 209 |
| 269 | Inventory Control | 3 | 223 | 49 | 28 |
| 270 | Cognitive Science | 6 | 222 | 1056 | 991 |
| 271 | Process Control | 2 | 221 | 1147 | 796 |
| 271 | Birth control | 7 | 221 | 221 | 229 |
| 273 | Adhesion | 3 | 220 | 721 | 265 |
| 273 | adhesives | 3 | 220 | 767 | 269 |
| 275 | Evolutionary Genetics | 14 | 218 | 121 | 290 |
| 275 | Molecular Epidemiology | 14 | 218 | 121 | 290 |
| 275 | Solid State Chemistry | 13 | 218 | 1343 | 1437 |
| 278 | Solitons | 15 | 216 | 375 | 617 |
| 278 | Fractals | 15 | 216 | 378 | 621 |
| 278 | Chaos | 15 | 216 | 375 | 617 |
| 281 | Chromosome mapping | 8 | 215 | 931 | 1103 |
| 282 | Medical Anthropology | 9 | 214 | 608 | 874 |
| 283 | Catalysis | 14 | 212 | 1791 | 2262 |
| 283 | Risk assessment | 8 | 212 | 248 | 197 |
| 285 | emergency management | 9 | 211 | 274 | 357 |
| 286 | Perception | 4 | 209 | 1259 | 975 |
| 286 | proteins | 6 | 209 | 1279 | 1121 |
| 288 | Socioeconomic Factors | 6 | 208 | 472 | 415 |
| 288 | Primary health care | 7 | 208 | 960 | 823 |
| 288 | medical education | 2 | 208 | 1804 | 852 |
| 291 | Photonics | 4 | 207 | 1478 | 1219 |
| 291 | Population | 7 | 207 | 519 | 523 |
| 293 | Microbial Biotechnology | 13 | 206 | 266 | 557 |
| 294 | bioclimatology | 11 | 205 | 329 | 495 |
| 295 | drug resistance | 10 | 203 | 234 | 401 |
| 295 | Measurement | 1 | 203 | 2028 | 724 |
| 295 | Plant diseases | 7 | 203 | 1219 | 1075 |
| 295 | Health Risk Assessment | 6 | 203 | 207 | 142 |
| 299 | Molecular Genetics | 3 | 202 | 1506 | 1253 |
| 300 | Hazardous waste | 4 | 201 | 808 | 864 |
| 300 | biological monitoring | 5 | 201 | 322 | 276 |
| 302 | Nanochemistry | 8 | 200 | 683 | 636 |
| 303 | Urbanization | 6 | 199 | 71 | 59 |
| 304 | Computer Engineering | 8 | 196 | 471 | 391 |
| 304 | Social Psychology | 5 | 196 | 1652 | 1398 |
| 306 | radioactive waste | 3 | 194 | 808 | 830 |
| 306 | industrial waste | 3 | 194 | 841 | 832 |
| 308 | Physiology | 4 | 193 | 2900 | 2427 |
| 308 | Robotics | 3 | 193 | 1614 | 1021 |
| 310 | Remote Sensing | 7 | 192 | 928 | 688 |
| 311 | Geriatrics | 7 | 191 | 1644 | 1437 |
| 311 | Smoking | 8 | 191 | 387 | 501 |
| 313 | Psychophysiology | 4 | 189 | 2039 | 1736 |
| 314 | Pregnancy | 8 | 184 | 414 | 446 |
| 315 | Cross-Cultural Studies | 13 | 183 | 190 | 347 |
| 315 | Nonlinear Dynamics | 18 | 183 | 875 | 1190 |
| 315 | cross-cultural comparison | 13 | 183 | 134 | 216 |
| 315 | Australia | 15 | 183 | 613 | 877 |
| 319 | Quantum Gravity | 15 | 182 | 1095 | 1323 |
| 320 | Conservation Biology | 7 | 181 | 666 | 776 |
| 320 | Textile industry | 7 | 181 | 269 | 172 |
| 322 | Polymer Engineering | 9 | 180 | 14 | 5 |
| 322 | Production Planning | 5 | 180 | 167 | 199 |
| 322 | atmosphere | 5 | 180 | 529 | 514 |
| 325 | Primates | 4 | 178 | 590 | 401 |
| 326 | Humanities | 19 | 177 | 466 | 637 |
| 326 | Clinical Pharmacology | 3 | 177 | 1092 | 760 |
| 328 | Genomics | 18 | 176 | 1110 | 1861 |
| 328 | Health | 14 | 176 | 852 | 1219 |
| 330 | Heat Exchangers | 7 | 175 | 832 | 1022 |
| 331 | ecological risk assessment | 3 | 173 | 213 | 99 |
| 331 | textile fibers | 12 | 173 | 132 | 135 |
| 331 | Women's health | 8 | 173 | 632 | 649 |
| 334 | Biomass | 4 | 172 | 561 | 588 |
| 335 | Environmental Law | 7 | 168 | 626 | 1048 |
| 336 | International Relations | 11 | 166 | 477 | 491 |
| 337 | Diffusion of innovations | 5 | 165 | 37 | 35 |
| 338 | Regional Planning | 4 | 163 | 1228 | 948 |
| 338 | Neurons | 1 | 163 | 739 | 783 |
| 340 | Distance Education | 4 | 162 | 269 | 223 |
| 341 | Investment analysis | 5 | 161 | 698 | 565 |
| 342 | Cardiovascular diseases | 2 | 160 | 1449 | 884 |
| 343 | Political Science | 15 | 159 | 778 | 863 |
| 343 | Risk Management | 3 | 159 | 633 | 418 |
| 343 | Population Genetics | 4 | 159 | 936 | 935 |
| 343 | Fashion | 5 | 159 | 82 | 49 |
| 347 | Rural Development | 21 | 156 | 80 | 360 |
| 347 | poverty | 5 | 156 | 226 | 216 |
| 349 | Neural circuitry | 9 | 155 | 1168 | 1594 |
| 349 | food contamination | 9 | 155 | 422 | 525 |
| 349 | Social behavior | 3 | 155 | 1125 | 866 |
| 352 | Autoantibodies | 1 | 154 | 735 | 452 |
| 352 | Autoimmunity | 1 | 154 | 886 | 585 |
| 352 | Autoimmune diseases | 1 | 154 | 809 | 484 |
| 355 | Electronics | 13 | 150 | 1654 | 1965 |
| 356 | Quantum electronics | 11 | 148 | 813 | 953 |
| 356 | Oxidative stress | 3 | 148 | 803 | 938 |
| 356 | Cellular senescence | 3 | 148 | 277 | 470 |
| 356 | DNA | 3 | 148 | 572 | 341 |
| 360 | Islam | 11 | 146 | 114 | 136 |
| 361 | preventive medicine | 7 | 145 | 653 | 836 |
| 361 | Export Marketing | 4 | 145 | 138 | 218 |
| 363 | Sedimentology | 6 | 144 | 380 | 448 |
| 364 | Molecular ecology | 2 | 143 | 1066 | 983 |
| 365 | Emergency Medical Services | 2 | 142 | 758 | 344 |
| 365 | Optoelectronic devices | 9 | 142 | 473 | 398 |
| 365 | miniaturization | 3 | 142 | 1634 | 1431 |
| 368 | Histology | 2 | 140 | 1807 | 1323 |
| 368 | Geodynamics | 3 | 140 | 800 | 699 |
| 368 | DNS | 2 | 140 | 597 | 345 |
| 368 | Genes | 2 | 140 | 1214 | 762 |
| 372 | Microprocessors | 5 | 137 | 435 | 305 |
| 372 | Japan | 8 | 137 | 990 | 1029 |
| 374 | Production Control | 2 | 136 | 344 | 261 |
| 375 | Cybernetics | 3 | 135 | 1482 | 1208 |
| 375 | Public Policy | 5 | 135 | 1253 | 1283 |
| 375 | Food Policy | 11 | 135 | 100 | 292 |
| 375 | Parenteral nutrition | 1 | 135 | 1207 | 766 |
| 379 | foods | 4 | 134 | 77 | 64 |
| 380 | Data Mining | 9 | 133 | 820 | 1243 |
| 381 | Zoology | 10 | 132 | 1387 | 1481 |
| 381 | Molecular cloning | 7 | 132 | 872 | 1021 |
| 381 | Genetic recombination | 7 | 132 | 859 | 1012 |
| 381 | Brain | 2 | 132 | 2400 | 1831 |
| 381 | Telecommunication | 12 | 132 | 1311 | 1756 |
| 386 | Stochastic Processes | 4 | 131 | 795 | 518 |
| 386 | Radiochemistry | 10 | 131 | 455 | 474 |
| 386 | energy development | 10 | 131 | 302 | 754 |
| 389 | Operations Research | 10 | 130 | 1267 | 1577 |
| 389 | Infection control | 6 | 130 | 150 | 224 |
| 391 | Histochemistry | 1 | 129 | 1432 | 702 |
| 391 | personality | 4 | 129 | 1252 | 1298 |
| 391 | Molecular structure | 17 | 129 | 984 | 1618 |
| 394 | soil pollution | 5 | 127 | 352 | 362 |
| 394 | Water Microbiology | 7 | 127 | 174 | 328 |
| 396 | Contraception | 10 | 126 | 257 | 410 |
| 396 | scientific societies | 5 | 126 | 479 | 522 |
| 396 | Microwaves | 8 | 126 | 798 | 796 |
| 399 | Mathematical Physics | 14 | 125 | 1455 | 1730 |
| 399 | Condensed Matter | 7 | 125 | 1928 | 1992 |
| 401 | Medical Laboratory Science | 5 | 124 | 1366 | 1684 |
| 401 | behavioral medicine | 1 | 124 | 1826 | 1213 |
| 401 | Radioisotopes | 7 | 124 | 651 | 582 |
| 404 | Nuclear Chemistry | 7 | 123 | 668 | 574 |
| 404 | healthcare industry | 2 | 123 | 45 | 9 |
| 406 | Behavior | 6 | 119 | 1987 | 2595 |
| 407 | Plant breeding | 2 | 118 | 862 | 575 |
| 408 | peace | 5 | 117 | 340 | 388 |
| 409 | Egypt | 12 | 116 | 111 | 449 |
| 410 | Development Economics | 3 | 115 | 418 | 302 |
| 410 | Diagnostic microbiology | 2 | 115 | 1031 | 1084 |
| 412 | Neurology | 9 | 114 | 2302 | 3026 |
| 412 | protein | 3 | 114 | 1085 | 890 |
| 412 | Chromatographic analysis | 8 | 114 | 1094 | 1261 |
| 412 | drug toxicity | 2 | 114 | 628 | 389 |
| 416 | Sociolinguistics | 6 | 112 | 300 | 315 |
| 416 | Microstructure | 2 | 112 | 1157 | 500 |
| 418 | Flexible manufacturing systems | 2 | 111 | 530 | 347 |
| 418 | Global warming | 4 | 111 | 78 | 115 |
| 418 | Malaria | 5 | 111 | 432 | 511 |
| 418 | System design | 2 | 111 | 258 | 143 |
| 422 | Environmental Microbiology | 2 | 110 | 1483 | 1345 |
| 422 | sustainability | 4 | 110 | 717 | 878 |
| 424 | Medical genetics | 5 | 109 | 1378 | 1778 |
| 424 | Biometrics | 13 | 109 | 452 | 724 |
| 426 | Air Conditioning | 4 | 108 | 140 | 92 |
| 427 | Climate Change Mitigation | 1 | 107 | 94 | 106 |
| 427 | sea level | 1 | 107 | 94 | 106 |
| 427 | Landslides | 2 | 107 | 310 | 293 |
| 430 | Statistical Mechanics | 3 | 106 | 634 | 425 |
| 431 | Corporate governance | 7 | 105 | 291 | 601 |
| 432 | Immunology | 7 | 104 | 1707 | 2217 |
| 432 | Intelligent Transportation Systems | 7 | 104 | 684 | 1060 |
| 432 | Biodiversity | 16 | 104 | 833 | 1709 |
| 435 | Food additives | 4 | 103 | 875 | 1130 |
| 436 | Telecommunication Systems | 5 | 102 | 1287 | 1168 |
| 436 | drug therapy | 6 | 102 | 1126 | 1360 |
| 438 | Nursing | 3 | 99 | 1858 | 1284 |
| 438 | Biogeochemistry | 3 | 99 | 982 | 1086 |
| 438 | Molecules | 7 | 99 | 1003 | 1031 |
| 438 | Wales | 1 | 99 | 275 | 17 |
| 442 | Fertilizers | 5 | 98 | 234 | 319 |
| 442 | Immunity | 4 | 98 | 1216 | 1569 |
| 444 | Pharmaceutical Technology | 7 | 97 | 977 | 1371 |
| 444 | Multilingualism | 3 | 97 | 274 | 232 |
| 444 | Multimedia Systems | 7 | 97 | 1192 | 1375 |
| 444 | breastfeeding | 5 | 97 | 316 | 374 |
| 448 | Organometallic chemistry | 10 | 96 | 1202 | 1604 |
| 448 | Transnational corporations | 1 | 96 | 809 | 360 |
| 448 | nuclear power | 17 | 96 | 149 | 246 |
| 448 | enzymes | 2 | 96 | 1593 | 1315 |
| 452 | Astrophysics | 8 | 95 | 1915 | 2221 |
| 452 | Child Development | 8 | 95 | 1073 | 1539 |
| 454 | Thermodynamics | 7 | 94 | 793 | 778 |
| 454 | Freshwater invertebrates | 1 | 94 | 351 | 225 |
| 454 | Ecosystem management | 1 | 94 | 1083 | 617 |
| 454 | Papermaking | 9 | 94 | 40 | 34 |
| 458 | Anemia | 1 | 93 | 6 | 4 |
| 458 | Radiation effects | 1 | 93 | 1048 | 720 |
| 460 | Critical Care | 2 | 92 | 1195 | 1212 |
| 460 | Critical Care Medicine | 2 | 92 | 1146 | 1193 |
| 460 | Nanoparticles | 2 | 92 | 2039 | 1683 |
| 460 | Homeostasis | 1 | 92 | 583 | 763 |
| 460 | Proteome | 2 | 92 | 1128 | 1049 |
| 460 | atmospheric models | 1 | 92 | 808 | 630 |
| 460 | Cell metabolism | 1 | 92 | 983 | 886 |
| 467 | Computer Architecture | 3 | 91 | 545 | 345 |
| 467 | Molecular evolution | 3 | 91 | 1360 | 1487 |
| 469 | Civil Engineering | 3 | 90 | 1455 | 877 |
| 469 | Physical Chemistry | 9 | 90 | 1279 | 1762 |
| 469 | Developmental Biology | 6 | 90 | 1212 | 1723 |
| 472 | Chromatography | 5 | 89 | 1199 | 1282 |
| 472 | Southeast Asia | 4 | 89 | 273 | 188 |
| 472 | Germany | 12 | 89 | 199 | 216 |
| 475 | Health Services Administration | 8 | 88 | 482 | 798 |
| 475 | community development | 11 | 88 | 220 | 518 |
| 475 | Calorimetry | 9 | 88 | 625 | 994 |
| 475 | Thermal analysis | 9 | 88 | 625 | 994 |
| 475 | Aquatic ecology | 6 | 88 | 615 | 756 |
| 480 | Watershed management | 2 | 87 | 292 | 114 |
| 481 | Organizational change | 8 | 86 | 362 | 668 |
| 481 | Aerosols | 1 | 86 | 812 | 461 |
| 483 | Aquaculture | 4 | 84 | 1181 | 1202 |
| 484 | Travel | 2 | 83 | 899 | 621 |
| 484 | Memory | 5 | 83 | 1106 | 1393 |
| 486 | Biodiversity conservation | 4 | 80 | 1234 | 1645 |
| 486 | Visual Perception | 3 | 80 | 1239 | 1223 |
| 486 | Attention | 3 | 80 | 1286 | 1275 |
| 486 | women | 6 | 80 | 571 | 532 |
| 486 | Menopause | 3 | 80 | 280 | 290 |
| 491 | Educational Technology | 1 | 79 | 2569 | 1549 |
| 491 | Neurophysiology | 4 | 79 | 2031 | 2324 |
| 493 | Gene expression regulation | 2 | 78 | 1031 | 916 |
| 493 | Genetic regulation | 2 | 78 | 1097 | 1069 |
| 493 | System analysis | 5 | 78 | 1862 | 2064 |
| 496 | Petroleum Engineering | 3 | 76 | 662 | 653 |
| 496 | Carcinogenesis | 2 | 76 | 968 | 979 |
| 496 | Membranes | 1 | 76 | 2002 | 1699 |
| 496 | planning | 7 | 76 | 404 | 659 |
| 500 | Green Technology | 4 | 75 | 282 | 416 |
| 500 | weather forecasting | 1 | 75 | 305 | 200 |
| 502 | Oceanography | 12 | 74 | 830 | 1475 |
| 502 | Industrial Organization | 3 | 74 | 333 | 332 |
| 502 | Public Relations | 2 | 74 | 563 | 404 |
| 502 | Mobile Computing | 2 | 74 | 1274 | 999 |
| 502 | Entropy | 1 | 74 | 1891 | 952 |
| 502 | Enzyme | 1 | 74 | 887 | 723 |
| 502 | Invertebrates | 2 | 74 | 719 | 566 |
| 502 | Detectors | 7 | 74 | 978 | 1448 |
| 510 | Human Rights | 7 | 73 | 302 | 420 |
| 510 | Strategic planning | 2 | 73 | 962 | 834 |
| 510 | Risk | 1 | 73 | 842 | 578 |
| 510 | data collection | 4 | 73 | 875 | 1122 |
| 510 | insurance | 2 | 73 | 467 | 325 |
| 510 | Money | 1 | 73 | 661 | 487 |
| 516 | Bioenergetics | 4 | 71 | 689 | 954 |
| 516 | Energy metabolism | 4 | 71 | 472 | 658 |
| 516 | Ethnology | 8 | 71 | 828 | 1045 |
| 516 | cell membrane | 4 | 71 | 456 | 634 |
| 516 | mathematical analysis | 5 | 71 | 1994 | 1759 |
| 521 | Neurochemistry | 5 | 69 | 1571 | 2035 |
| 521 | Clinical Biochemistry | 4 | 69 | 888 | 1019 |
| 521 | Thermochemistry | 1 | 69 | 768 | 495 |
| 521 | organizational effectiveness | 7 | 69 | 191 | 460 |
| 521 | Zeolites | 2 | 69 | 1108 | 1174 |
| 521 | Culture | 5 | 69 | 832 | 784 |
| 527 | Bacteriology | 4 | 68 | 1379 | 1833 |
| 527 | economic analysis | 2 | 68 | 314 | 265 |
| 529 | Electrophoresis | 3 | 67 | 1473 | 1516 |
| 530 | Information visualization | 2 | 66 | 237 | 103 |
| 530 | International security | 1 | 66 | 367 | 315 |
| 530 | Mineral resources | 4 | 66 | 506 | 860 |
| 530 | Geospatial data | 2 | 66 | 32 | 30 |
| 530 | Ecological disturbances | 3 | 66 | 24 | 49 |
| 530 | Environmental disasters | 3 | 66 | 24 | 49 |
| 530 | conflict management | 1 | 66 | 444 | 332 |
| 537 | Community Psychiatry | 2 | 65 | 1011 | 1024 |
| 537 | Parasitology | 7 | 65 | 1447 | 1942 |
| 539 | Mountains | 1 | 64 | 787 | 285 |
| 539 | national security | 2 | 64 | 474 | 215 |
| 539 | strategy | 2 | 64 | 215 | 94 |
| 542 | Ocean Engineering | 6 | 63 | 1171 | 1674 |
| 542 | Host-parasite interactions | 2 | 63 | 1214 | 1390 |
| 542 | Planets | 2 | 63 | 1402 | 1517 |
| 542 | internet | 3 | 63 | 1546 | 1634 |
| 542 | economic development projects | 4 | 63 | 120 | 197 |
| 542 | hygiene | 3 | 63 | 491 | 542 |
| 542 | Metals | 3 | 63 | 1893 | 1842 |
| 549 | Internet of Things | 2 | 62 | 1291 | 1264 |
| 549 | Metabolism | 5 | 62 | 1501 | 2179 |
| 549 | Food Preservation | 8 | 62 | 400 | 712 |
| 549 | Soft Condensed Matter | 4 | 62 | 878 | 1120 |
| 553 | epidemiologic methods | 8 | 61 | 43 | 140 |
| 553 | Transgenic plants | 1 | 61 | 712 | 591 |
| 553 | Europe | 9 | 61 | 1609 | 2367 |
| 556 | Marine Geology | 2 | 60 | 703 | 634 |
| 556 | Petroleum Geology | 2 | 60 | 581 | 579 |
| 556 | Hypertension | 2 | 60 | 1239 | 1389 |
| 556 | Aging | 4 | 60 | 1917 | 2162 |
| 560 | Wireless Communication | 6 | 59 | 245 | 381 |
| 560 | Language and Education | 2 | 59 | 167 | 126 |
| 560 | Immunochemistry | 1 | 59 | 1332 | 970 |
| 560 | Wildlife management | 1 | 59 | 826 | 489 |
| 560 | Allergy | 1 | 59 | 1183 | 1128 |
| 560 | biological evolution | 1 | 59 | 2508 | 2174 |
| 560 | Phylogeny | 1 | 59 | 1263 | 1141 |
| 560 | Toxins | 2 | 59 | 1007 | 934 |
| 568 | Chemical kinetics | 4 | 58 | 672 | 584 |
| 568 | RNA | 1 | 58 | 747 | 640 |
| 568 | biopolymers | 3 | 58 | 1100 | 1265 |
| 571 | Microwave devices | 1 | 57 | 701 | 477 |
| 572 | Macroeconomics | 1 | 56 | 654 | 361 |
| 573 | Energy Storage | 4 | 55 | 1093 | 1397 |
| 573 | Technology Assessment | 4 | 55 | 287 | 761 |
| 573 | Food service management | 3 | 55 | 418 | 790 |
| 576 | Plant tissue culture | 3 | 54 | 686 | 886 |
| 576 | Plant cell culture | 3 | 54 | 602 | 878 |
| 578 | Natural resources | 4 | 53 | 613 | 933 |
| 578 | solar power | 3 | 53 | 820 | 1195 |
| 578 | Mental Health Services | 5 | 53 | 778 | 1195 |
| 578 | geological modeling | 5 | 53 | 333 | 543 |
| 578 | solar cells | 3 | 53 | 877 | 1254 |
| 578 | Cell death | 1 | 53 | 1283 | 1334 |
| 584 | Language Policy | 3 | 52 | 94 | 171 |
| 584 | food handling | 4 | 52 | 744 | 1315 |
| 584 | Language planning | 3 | 52 | 173 | 121 |
| 584 | Microorganisms | 1 | 52 | 1407 | 1311 |
| 584 | silicon | 1 | 52 | 728 | 325 |
| 589 | Dentistry | 3 | 51 | 709 | 602 |
| 589 | Microelectronics | 3 | 51 | 1526 | 1785 |
| 589 | Electromagnetism | 5 | 51 | 771 | 1014 |
| 589 | drinking water | 2 | 51 | 174 | 102 |
| 589 | investigative techniques | 2 | 51 | 170 | 282 |
| 594 | Biosensors | 2 | 50 | 1386 | 1828 |
| 594 | Hydraulic Engineering | 3 | 50 | 803 | 886 |
| 594 | Fluid Dynamics | 10 | 50 | 568 | 1155 |
| 594 | Geomagnetism | 3 | 50 | 555 | 642 |
| 594 | Combinatorial chemistry | 1 | 50 | 1055 | 1018 |
| 594 | Land use | 2 | 50 | 1341 | 1464 |
| 594 | Human Capital | 2 | 50 | 323 | 381 |
| 594 | Solutions | 3 | 50 | 396 | 398 |
| 594 | Bioelectronics | 2 | 50 | 1249 | 1704 |
| 594 | international cooperation | 2 | 50 | 725 | 763 |
| 604 | ethnicity | 3 | 49 | 703 | 636 |
| 604 | Electrochemical Analysis | 3 | 49 | 1544 | 1755 |
| 604 | Knowledge management | 4 | 49 | 279 | 407 |
| 604 | infection | 5 | 49 | 1026 | 1572 |
| 604 | biological agents | 12 | 49 | 209 | 328 |
| 604 | natural gas | 1 | 49 | 609 | 530 |
| 604 | Cognition | 2 | 49 | 1806 | 1761 |
| 611 | Neonatology | 2 | 48 | 692 | 685 |
| 611 | migration policy | 2 | 48 | 269 | 307 |
| 611 | biochemical markers | 3 | 48 | 586 | 745 |
| 611 | carbon monoxide | 1 | 48 | 673 | 661 |
| 615 | Hydrodynamics | 2 | 47 | 649 | 726 |
| 615 | Erosion | 2 | 47 | 114 | 164 |
| 615 | immigration | 1 | 47 | 372 | 302 |
| 615 | Asylum seeker | 1 | 47 | 303 | 296 |
| 615 | Heterocyclic compounds | 2 | 47 | 1205 | 922 |
| 615 | econometric models | 2 | 47 | 830 | 876 |
| 621 | Phytochemistry | 1 | 46 | 631 | 467 |
| 621 | Phytoremediation | 1 | 46 | 631 | 467 |
| 621 | Bioinorganic chemistry | 2 | 46 | 1537 | 1575 |
| 621 | Computational Fluid Dynamics | 2 | 46 | 777 | 788 |
| 621 | environmental remediation | 1 | 46 | 750 | 533 |
| 621 | Bioreactors | 1 | 46 | 631 | 467 |
| 621 | Lipids | 1 | 46 | 1682 | 1560 |
| 621 | Fluorescence | 2 | 46 | 639 | 508 |
| 629 | Computer Graphics | 3 | 45 | 1649 | 1793 |
| 629 | Agricultural Microbiology | 5 | 45 | 46 | 53 |
| 629 | Total Quality Management | 4 | 45 | 405 | 815 |
| 629 | rare diseases | 1 | 45 | 823 | 690 |
| 633 | War and Society | 1 | 44 | 364 | 356 |
| 633 | warfare | 1 | 44 | 486 | 455 |
| 633 | Organometallic compounds | 4 | 44 | 1171 | 1475 |
| 636 | Bioethics | 8 | 43 | 530 | 955 |
| 636 | Substance Abuse | 2 | 43 | 1415 | 1448 |
| 636 | Crystallography | 4 | 43 | 1434 | 1204 |
| 636 | cell physiology | 1 | 43 | 1683 | 1707 |
| 636 | health services | 3 | 43 | 960 | 1191 |
| 636 | educational planning | 2 | 43 | 522 | 621 |
| 636 | Mental illness | 3 | 43 | 1479 | 1982 |
| 643 | Plant Genetics | 1 | 42 | 1018 | 979 |
| 643 | Ceramics | 3 | 42 | 1417 | 1476 |
| 643 | Vaccination | 2 | 42 | 289 | 385 |
| 643 | Africa | 4 | 42 | 1287 | 1356 |
| 647 | Special Education | 2 | 41 | 934 | 808 |
| 647 | Rock deformation | 1 | 41 | 374 | 353 |
| 647 | Radio waves | 3 | 41 | 791 | 1034 |
| 647 | musculoskeletal system | 1 | 41 | 263 | 229 |
| 651 | Information Theory | 2 | 40 | 1508 | 1457 |
| 651 | Materials Engineering | 2 | 40 | 952 | 839 |
| 651 | Occupational Health | 3 | 40 | 988 | 1105 |
| 651 | Computer Vision | 2 | 40 | 1305 | 1438 |
| 651 | Signal Transduction | 1 | 40 | 1712 | 1677 |
| 651 | industrial hygiene | 3 | 40 | 970 | 960 |
| 651 | Climate change | 3 | 40 | 905 | 1582 |
| 651 | Waste management | 2 | 40 | 1646 | 1654 |
| 651 | Electromagnetic waves | 3 | 40 | 303 | 384 |
| 651 | Psychiatric Epidemiology | 1 | 40 | 746 | 781 |
| 651 | Longevity | 2 | 40 | 221 | 300 |
| 651 | Entomology | 4 | 40 | 1853 | 2089 |
| 663 | Intercultural Communication | 2 | 39 | 565 | 631 |
| 663 | Power Electronics | 2 | 39 | 1131 | 1285 |
| 663 | Chemotherapy | 5 | 39 | 797 | 1251 |
| 663 | Medical Oncology | 1 | 39 | 1769 | 1680 |
| 663 | Metastasis | 1 | 39 | 309 | 435 |
| 663 | Oncogenes | 1 | 39 | 1131 | 1313 |
| 663 | Biomarkers | 2 | 39 | 521 | 551 |
| 663 | Business Ethics | 2 | 39 | 1187 | 1611 |
| 663 | drug evaluation | 2 | 39 | 1361 | 1572 |
| 672 | Information Systems | 1 | 38 | 2140 | 1819 |
| 672 | Molecular Spectroscopy | 2 | 38 | 2023 | 2128 |
| 672 | violence | 5 | 38 | 717 | 1267 |
| 675 | Biopharmaceutics | 3 | 37 | 976 | 1438 |
| 675 | Forensic Genetics | 3 | 37 | 223 | 361 |
| 675 | Inorganic Chemistry | 1 | 37 | 120 | 122 |
| 675 | Indoor air quality | 1 | 37 | 206 | 111 |
| 675 | Chemical safety | 2 | 37 | 53 | 29 |
| 675 | Graphene | 1 | 37 | 257 | 290 |
| 675 | Ventilation | 1 | 37 | 895 | 704 |
| 675 | heating | 1 | 37 | 300 | 186 |
| 683 | Sustainable Engineering | 4 | 36 | 1370 | 2144 |
| 684 | Nanomedicine | 1 | 35 | 491 | 524 |
| 684 | Physical organic chemistry | 1 | 35 | 1890 | 1674 |
| 684 | Technological Innovations | 5 | 35 | 780 | 1519 |
| 684 | Family | 5 | 35 | 722 | 1218 |
| 684 | Jurisprudence | 4 | 35 | 763 | 976 |
| 684 | weather | 1 | 35 | 975 | 907 |
| 690 | Dynamics | 6 | 34 | 1183 | 1703 |
| 690 | Surface-Active Agents | 1 | 34 | 1696 | 1812 |
| 690 | Microfabrication | 1 | 34 | 639 | 491 |
| 690 | Drug design | 1 | 34 | 2138 | 1942 |
| 690 | Surface properties | 1 | 34 | 1741 | 1859 |
| 690 | Eastern Europe | 2 | 34 | 1143 | 863 |
| 690 | families | 3 | 34 | 867 | 1006 |
| 690 | Stem cells | 1 | 34 | 1532 | 1562 |
| 698 | Environmental Science | 1 | 33 | 50 | 57 |
| 698 | Fluid Mechanics | 5 | 33 | 1142 | 1680 |
| 698 | viruses | 1 | 33 | 1546 | 1662 |
| 698 | mammals | 7 | 33 | 603 | 1141 |
| 698 | Fibers | 4 | 33 | 70 | 83 |
| 698 | sex crimes | 3 | 33 | 617 | 896 |
| 698 | data protection | 2 | 33 | 787 | 776 |
| 705 | Forest Ecology | 2 | 32 | 1105 | 1425 |
| 705 | Analytical Biochemistry | 1 | 32 | 2266 | 2073 |
| 705 | primary prevention | 1 | 32 | 666 | 685 |
| 705 | Chemical industry | 3 | 32 | 1243 | 1557 |
| 705 | Investments | 2 | 32 | 712 | 757 |
| 705 | Population Dynamics | 2 | 32 | 238 | 324 |
| 711 | Fishery management | 4 | 31 | 649 | 1035 |
| 711 | Reproductive health | 5 | 31 | 509 | 1094 |
| 711 | vibration | 3 | 31 | 1132 | 1520 |
| 711 | Crisis management | 1 | 31 | 336 | 254 |
| 715 | Biogeography | 5 | 30 | 718 | 1440 |
| 715 | Higher Education | 2 | 30 | 771 | 867 |
| 715 | Nonlinear mechanics | 1 | 30 | 801 | 680 |
| 718 | Urban Planning | 2 | 29 | 497 | 708 |
| 718 | Teratology | 1 | 29 | 385 | 422 |
| 718 | Psychiatric Nursing | 1 | 29 | 1045 | 911 |
| 718 | Learning disabilities | 2 | 29 | 905 | 1050 |
| 718 | Entrepreneurship | 4 | 29 | 869 | 1690 |
| 718 | Housing | 2 | 29 | 611 | 833 |
| 718 | abnormalities | 1 | 29 | 260 | 294 |
| 725 | Municipal Engineering | 1 | 28 | 685 | 722 |
| 725 | Behavioral research | 2 | 28 | 794 | 848 |
| 725 | Mass Spectrometry | 2 | 28 | 1182 | 1326 |
| 725 | Feminism | 2 | 28 | 725 | 758 |
| 725 | Ultrasonics | 1 | 28 | 1763 | 1908 |
| 725 | Sonochemistry | 1 | 28 | 1107 | 1401 |
| 725 | Health promotion | 1 | 28 | 1627 | 1349 |
| 725 | Parasites | 2 | 28 | 1714 | 1916 |
| 725 | Catalysts | 1 | 28 | 1116 | 1014 |
| 734 | Law | 7 | 27 | 809 | 1020 |
| 734 | Anthropology | 6 | 27 | 1032 | 1702 |
| 734 | Agricultural Engineering | 1 | 27 | 761 | 771 |
| 734 | Econometrics | 4 | 27 | 1181 | 1509 |
| 734 | Systems Biology | 1 | 27 | 1945 | 2007 |
| 734 | Financial Engineering | 2 | 27 | 182 | 395 |
| 734 | consumer behavior | 2 | 27 | 680 | 1033 |
| 734 | Nonlinear functional analysis | 2 | 27 | 1428 | 1487 |
| 734 | Middle East | 4 | 27 | 883 | 1143 |
| 743 | Green Chemistry | 1 | 26 | 2142 | 2424 |
| 743 | Neurotoxicology | 1 | 26 | 959 | 1128 |
| 743 | Cytogenetics | 1 | 26 | 1612 | 1692 |
| 743 | Labor Economics | 4 | 26 | 420 | 706 |
| 743 | Apoptosis | 1 | 26 | 515 | 615 |
| 743 | neurotoxins | 1 | 26 | 515 | 615 |
| 743 | Neurotoxic agents | 1 | 26 | 515 | 615 |
| 743 | Sensor Networks | 1 | 26 | 528 | 386 |
| 743 | Parasitic Diseases | 2 | 26 | 1904 | 2256 |
| 743 | Emulsions | 2 | 26 | 486 | 547 |
| 743 | ecosystem | 3 | 26 | 1191 | 1963 |
| 743 | Pathogens | 2 | 26 | 133 | 262 |
| 743 | pottery | 2 | 26 | 1128 | 1382 |
| 743 | Insects | 2 | 26 | 1578 | 1669 |
| 743 | Intellectual disability | 2 | 26 | 867 | 1041 |
| 743 | diseases | 1 | 26 | 535 | 656 |
| 743 | Nerve regeneration | 1 | 26 | 515 | 615 |
| 760 | Transportation Engineering | 1 | 25 | 502 | 558 |
| 760 | Proteomics | 3 | 25 | 952 | 1533 |
| 760 | Radiation Protection | 1 | 25 | 989 | 665 |
| 760 | Geopolitics | 1 | 25 | 499 | 441 |
| 760 | Sovereignty | 1 | 25 | 258 | 269 |
| 760 | civilization | 4 | 25 | 903 | 677 |
| 760 | Communication | 3 | 25 | 2022 | 2558 |
| 760 | Porous materials | 3 | 25 | 783 | 1110 |
| 760 | Nonprofit organizations | 1 | 25 | 620 | 657 |
| 760 | Phytotherapy | 1 | 25 | 1218 | 1295 |
| 770 | Engineering Physics | 3 | 24 | 103 | 77 |
| 770 | Cloud Computing | 1 | 24 | 640 | 707 |
| 770 | Demography | 5 | 24 | 470 | 975 |
| 770 | Animal Behavior | 1 | 24 | 2280 | 2456 |
| 770 | Mental Health | 5 | 24 | 1115 | 2050 |
| 770 | Social Networks | 1 | 24 | 647 | 626 |
| 770 | Online social networks | 1 | 24 | 623 | 572 |
| 770 | Ethology | 1 | 24 | 1820 | 2078 |
| 770 | Randomized Controlled Trials | 2 | 24 | 1040 | 1150 |
| 770 | disease vectors | 1 | 24 | 1357 | 1484 |
| 770 | population geography | 1 | 24 | 667 | 680 |
| 781 | Cartography | 2 | 23 | 572 | 592 |
| 781 | economic indicators | 1 | 23 | 206 | 182 |
| 781 | Infections | 2 | 23 | 1081 | 1510 |
| 781 | Liquid Crystals | 2 | 23 | 1062 | 918 |
| 781 | Biomechanics | 2 | 23 | 1438 | 1830 |
| 781 | Marriage | 4 | 23 | 427 | 835 |
| 781 | Respiratory system | 1 | 23 | 752 | 866 |
| 781 | Therapeutics | 3 | 23 | 1304 | 1977 |
| 781 | Respiration | 2 | 23 | 1406 | 1814 |
| 781 | Youth | 3 | 23 | 658 | 1108 |
| 781 | Immune system | 1 | 23 | 1172 | 1327 |
| 792 | Structural dynamics | 2 | 22 | 1074 | 1513 |
| 792 | Digital electronics | 1 | 22 | 601 | 391 |
| 792 | Avionics | 2 | 22 | 140 | 239 |
| 792 | Fracture mechanics | 2 | 22 | 1477 | 1808 |
| 792 | Corporate Social Responsibility | 1 | 22 | 645 | 933 |
| 792 | environmental auditing | 1 | 22 | 667 | 945 |
| 792 | drug addiction | 1 | 22 | 1386 | 1505 |
| 792 | alcoholism | 1 | 22 | 1759 | 1820 |
| 792 | child abuse | 2 | 22 | 916 | 1328 |
| 801 | Economic Geography | 1 | 21 | 626 | 635 |
| 801 | Vocational Education | 2 | 21 | 624 | 814 |
| 801 | Sports Medicine | 1 | 21 | 3033 | 2612 |
| 801 | Inclusive Education | 1 | 21 | 374 | 408 |
| 801 | Forest Management | 1 | 21 | 1347 | 1504 |
| 801 | Integration | 1 | 21 | 359 | 406 |
| 801 | Exercise | 1 | 21 | 2189 | 1909 |
| 808 | patient satisfaction | 2 | 20 | 158 | 167 |
| 808 | Cognitive Therapy | 4 | 20 | 497 | 1000 |
| 808 | Social policy | 4 | 20 | 882 | 1507 |
| 808 | international trade | 2 | 20 | 920 | 1161 |
| 808 | Isotopes | 2 | 20 | 140 | 242 |
| 813 | Neuropsychology | 1 | 19 | 2717 | 2837 |
| 813 | health behavior | 3 | 19 | 830 | 1399 |
| 813 | Cognitive neuroscience | 1 | 19 | 1331 | 1474 |
| 813 | Genetic testing | 1 | 19 | 584 | 556 |
| 813 | Hospitals | 1 | 19 | 555 | 565 |
| 818 | Ophthalmology | 2 | 18 | 1580 | 2024 |
| 818 | History | 1 | 18 | 1624 | 712 |
| 818 | Ethics | 3 | 18 | 921 | 1437 |
| 818 | Urban Geography | 1 | 18 | 411 | 471 |
| 818 | Language and Culture | 2 | 18 | 218 | 307 |
| 818 | Child psychology | 5 | 18 | 1030 | 2001 |
| 818 | Family Therapy | 4 | 18 | 608 | 1117 |
| 818 | Teaching | 2 | 18 | 2069 | 2424 |
| 818 | Vision | 2 | 18 | 720 | 1028 |
| 818 | Methodology | 3 | 18 | 523 | 904 |
| 828 | Soil Mechanics | 1 | 17 | 1425 | 1466 |
| 828 | Quality Management | 2 | 17 | 240 | 366 |
| 828 | Ethnic relations | 2 | 17 | 755 | 876 |
| 828 | Nationalism | 1 | 17 | 621 | 529 |
| 828 | Change management | 1 | 17 | 250 | 266 |
| 828 | Metabolic syndrome | 1 | 17 | 559 | 683 |
| 828 | dietary supplements | 1 | 17 | 1412 | 1746 |
| 828 | Environmental risk assessment | 1 | 17 | 749 | 801 |
| 828 | Migration | 3 | 17 | 168 | 366 |
| 828 | Central Asia | 1 | 17 | 409 | 479 |
| 828 | Electromagnetic fields | 3 | 17 | 388 | 482 |
| 828 | software | 1 | 17 | 1585 | 1837 |
| 840 | Structural optimization | 1 | 16 | 608 | 722 |
| 840 | Ecological Genetics | 2 | 16 | 786 | 1070 |
| 840 | Nanoelectronics | 2 | 16 | 910 | 1132 |
| 840 | Information Retrieval | 1 | 16 | 812 | 900 |
| 840 | Divorce | 1 | 16 | 294 | 296 |
| 840 | child mental health | 1 | 16 | 787 | 886 |
| 840 | Bacterial infections | 1 | 16 | 1136 | 1426 |
| 840 | Capital market | 1 | 16 | 810 | 967 |
| 840 | technical education | 1 | 16 | 1147 | 1178 |
| 840 | Semiconductor industry | 2 | 16 | 681 | 953 |
| 840 | Quantum theory | 2 | 16 | 1148 | 1339 |
| 840 | Economic planning | 2 | 16 | 671 | 1121 |
| 852 | Epigenetics | 1 | 15 | 430 | 528 |
| 852 | Agricultural Ecology | 3 | 15 | 960 | 1875 |
| 852 | Applied Linguistics | 2 | 15 | 772 | 928 |
| 852 | Kinetics | 1 | 15 | 902 | 953 |
| 852 | Comparative Education | 2 | 15 | 296 | 481 |
| 852 | Biochemical Genetics | 3 | 15 | 455 | 731 |
| 852 | Algorithms | 1 | 15 | 1221 | 1152 |
| 852 | Differential Equations | 5 | 15 | 847 | 1384 |
| 852 | Wildlife conservation | 1 | 15 | 1460 | 1738 |
| 852 | taxation | 1 | 15 | 493 | 559 |
| 852 | Diagnostic Imaging | 3 | 15 | 1595 | 2300 |
| 852 | Lymphoma | 1 | 15 | 512 | 485 |
| 852 | healthcare disparities | 1 | 15 | 794 | 990 |
| 852 | Multiple Myeloma | 1 | 15 | 506 | 479 |
| 852 | Epigenomics | 1 | 15 | 421 | 517 |
| 852 | Public Finance | 1 | 15 | 378 | 339 |
| 852 | Leukemia | 1 | 15 | 944 | 1082 |
| 852 | Consumer education | 2 | 15 | 474 | 970 |
| 852 | Antibodies | 2 | 15 | 597 | 872 |
| 852 | Antigens | 2 | 15 | 768 | 1076 |
| 872 | Energy Conversion | 1 | 14 | 1606 | 1923 |
| 872 | Religion and Politics | 1 | 14 | 125 | 82 |
| 872 | Agronomy | 2 | 14 | 507 | 996 |
| 872 | Geothermal Energy | 1 | 14 | 468 | 630 |
| 872 | Health Education | 1 | 14 | 2451 | 2478 |
| 872 | Electronic Packaging | 2 | 14 | 266 | 408 |
| 872 | Religion | 1 | 14 | 1427 | 975 |
| 872 | Ideology | 1 | 14 | 156 | 152 |
| 872 | Medical Ethics | 4 | 14 | 931 | 1625 |
| 872 | Eating Disorders | 1 | 14 | 1171 | 1352 |
| 872 | Feeding and Eating Disorders | 1 | 14 | 1124 | 1301 |
| 872 | fuel cells | 1 | 14 | 1636 | 1946 |
| 872 | Hormones | 2 | 14 | 1208 | 1821 |
| 872 | irreversible processes | 2 | 14 | 44 | 105 |
| 872 | Nonequilibrium thermodynamics | 2 | 14 | 44 | 105 |
| 872 | wood | 3 | 14 | 438 | 802 |
| 872 | freshwater biology | 4 | 14 | 747 | 1580 |
| 872 | Muscle contraction | 1 | 14 | 693 | 493 |
| 890 | Radiology | 4 | 13 | 1021 | 1696 |
| 890 | Early Childhood Education | 3 | 13 | 608 | 1041 |
| 890 | Environmental Economics | 1 | 13 | 771 | 844 |
| 890 | Industrial Safety | 1 | 13 | 1832 | 1948 |
| 890 | Greenhouse gases | 1 | 13 | 461 | 723 |
| 890 | mental health policy | 1 | 13 | 313 | 420 |
| 890 | Political Ecology | 1 | 13 | 207 | 177 |
| 890 | cosmic rays | 4 | 13 | 354 | 753 |
| 890 | Program Evaluation | 2 | 13 | 112 | 255 |
| 890 | International Education | 2 | 13 | 334 | 632 |
| 890 | Reproduction | 1 | 13 | 2448 | 2668 |
| 890 | Shipping | 1 | 13 | 186 | 168 |
| 890 | administrative agencies | 3 | 13 | 274 | 549 |
| 890 | communities | 2 | 13 | 14 | 24 |
| 890 | evaluation | 2 | 13 | 213 | 401 |
| 905 | Developmental Psychology | 2 | 12 | 1170 | 1711 |
| 905 | Highway Engineering | 1 | 12 | 634 | 787 |
| 905 | nutrition policy | 2 | 12 | 102 | 242 |
| 905 | sedimentary basins | 1 | 12 | 323 | 457 |
| 905 | Water Purification | 1 | 12 | 1714 | 1965 |
| 905 | Adolescent Psychology | 2 | 12 | 936 | 1434 |
| 905 | rural health | 1 | 12 | 270 | 368 |
| 905 | Ceramic materials | 2 | 12 | 1541 | 2130 |
| 905 | Spectroscopy | 1 | 12 | 367 | 241 |
| 905 | Auditing | 1 | 12 | 645 | 781 |
| 915 | Pharmacogenetics | 1 | 11 | 1162 | 1463 |
| 915 | Genetic Research | 1 | 11 | 316 | 460 |
| 915 | Feasibility studies | 3 | 11 | 253 | 434 |
| 915 | Probiotics | 1 | 11 | 425 | 683 |
| 915 | Safety management | 1 | 11 | 1153 | 1326 |
| 915 | biological invasions | 1 | 11 | 951 | 1213 |
| 921 | Urban Policy | 1 | 10 | 1390 | 1755 |
| 921 | Cryptography | 2 | 10 | 850 | 1015 |
| 921 | Metallurgy | 2 | 10 | 2256 | 2795 |
| 921 | Microeconomics | 2 | 10 | 409 | 573 |
| 921 | Research Design | 4 | 10 | 917 | 1954 |
| 921 | adolescence | 1 | 10 | 1437 | 1736 |
| 921 | Consumer Protection | 2 | 10 | 239 | 522 |
| 921 | Regional Development | 1 | 10 | 488 | 605 |
| 921 | Development planning | 1 | 10 | 452 | 575 |
| 921 | animals | 1 | 10 | 1740 | 1938 |
| 921 | Crystal growth | 1 | 10 | 1464 | 1742 |
| 921 | consumers | 2 | 10 | 486 | 948 |
| 921 | Nanotubes | 1 | 10 | 422 | 508 |
| 934 | Hematology | 2 | 9 | 1626 | 2230 |
| 934 | International Law | 3 | 9 | 412 | 395 |
| 934 | Noise | 1 | 9 | 310 | 380 |
| 934 | blood transfusion | 2 | 9 | 597 | 894 |
| 934 | Sound | 1 | 9 | 1541 | 1625 |
| 934 | aromatic plants | 1 | 9 | 490 | 619 |
| 934 | Genetic markers | 1 | 9 | 513 | 730 |
| 934 | Bacteria | 1 | 9 | 531 | 807 |
| 934 | Roads | 2 | 9 | 741 | 1100 |
| 934 | Glass | 1 | 9 | 1451 | 1773 |
| 934 | Autism | 1 | 9 | 985 | 1310 |
| 945 | Linguistics | 1 | 8 | 1900 | 1926 |
| 945 | Dermatology | 1 | 8 | 1754 | 2023 |
| 945 | Human genetics | 1 | 8 | 1905 | 2453 |
| 945 | Adult Education | 2 | 8 | 791 | 1213 |
| 945 | Disability Studies | 1 | 8 | 471 | 646 |
| 945 | Career development | 2 | 8 | 556 | 1062 |
| 945 | Emerging infectious diseases | 1 | 8 | 531 | 822 |
| 945 | Bioavailability | 1 | 8 | 194 | 361 |
| 945 | Mobile genetic elements | 1 | 8 | 209 | 359 |
| 945 | Laser therapy | 1 | 8 | 740 | 893 |
| 945 | sadness | 1 | 8 | 510 | 760 |
| 945 | economic conditions | 2 | 8 | 610 | 947 |
| 945 | Seaweed | 1 | 8 | 818 | 1133 |
| 945 | Radio | 2 | 8 | 1484 | 2083 |
| 945 | death | 1 | 8 | 648 | 861 |
| 945 | nuclear reactors | 2 | 8 | 33 | 29 |
| 945 | Business communication | 1 | 8 | 296 | 423 |
| 945 | Suicide | 1 | 8 | 903 | 1251 |
| 945 | antisocial personality disorder | 1 | 8 | 510 | 760 |
| 945 | Marine algae | 1 | 8 | 247 | 394 |
| 965 | Mechatronics | 1 | 7 | 1413 | 1764 |
| 965 | Horticulture | 2 | 7 | 890 | 1531 |
| 965 | Palliative Care | 1 | 7 | 1188 | 1465 |
| 965 | Welfare Economics | 1 | 7 | 678 | 817 |
| 965 | Continuing Education | 1 | 7 | 802 | 927 |
| 965 | Computational Intelligence | 1 | 7 | 1227 | 1533 |
| 965 | Smart Materials | 2 | 7 | 1149 | 1800 |
| 965 | Job satisfaction | 1 | 7 | 224 | 411 |
| 965 | Gender Roles | 1 | 7 | 3 | 1 |
| 965 | Gender identity | 1 | 7 | 583 | 671 |
| 965 | Cyberterrorism | 1 | 7 | 118 | 309 |
| 965 | species diversity | 4 | 7 | 112 | 171 |
| 965 | men | 1 | 7 | 594 | 862 |
| 965 | curriculum evaluation | 1 | 7 | 698 | 966 |
| 965 | grief | 1 | 7 | 167 | 167 |
| 965 | Work | 1 | 7 | 600 | 746 |
| 965 | job stress | 1 | 7 | 224 | 411 |
| 965 | pain | 1 | 7 | 1593 | 1958 |
| 965 | Peasants | 1 | 7 | 206 | 350 |
| 965 | synthesis | 3 | 7 | 1128 | 1891 |
| 985 | Surveying | 1 | 6 | 264 | 313 |
| 985 | Database Management | 3 | 6 | 742 | 1459 |
| 985 | Mass Communication | 1 | 6 | 41 | 32 |
| 985 | Functional Analysis | 1 | 6 | 1892 | 2054 |
| 985 | Telecommunications | 1 | 6 | 1402 | 1737 |
| 985 | Educational Psychology | 1 | 6 | 2005 | 2506 |
| 985 | Superconductors | 1 | 6 | 1177 | 1327 |
| 985 | Biodegradation | 1 | 6 | 1278 | 1830 |
| 985 | Fisheries Law | 1 | 6 | 188 | 306 |
| 985 | Mass Media | 3 | 6 | 844 | 1336 |
| 985 | urban health | 1 | 6 | 429 | 705 |
| 985 | Superconductivity | 1 | 6 | 686 | 844 |
| 985 | Gerontology | 2 | 6 | 2020 | 2743 |
| 985 | Sports | 1 | 6 | 2730 | 2877 |
| 985 | nursing ethics | 1 | 6 | 486 | 832 |
| 985 | older people | 2 | 6 | 1675 | 2250 |