| 1 | Telecommunication | 60 | 9.7K | 451 | 140 |
| 2 | Information Technology | 29 | 7.7K | 538 | 48 |
| 3 | Communication | 11 | 6.5K | 1041 | 95 |
| 4 | Molecular Biology | 108 | 6.5K | 1304 | 1030 |
| 5 | Oncology | 11 | 6.0K | 928 | 297 |
| 6 | Chemical Engineering | 81 | 5.1K | 920 | 665 |
| 7 | Chemistry | 142 | 5.0K | 1624 | 1565 |
| 8 | Nanotechnology | 33 | 4.6K | 1570 | 807 |
| 9 | Biochemistry | 77 | 4.1K | 1910 | 1452 |
| 10 | Renewable Energy Sources | 62 | 4.0K | 342 | 385 |
| 11 | Medicine | 81 | 3.9K | 1765 | 1418 |
| 12 | Water | 46 | 3.7K | 510 | 393 |
| 13 | Biochemical Engineering | 31 | 3.3K | 1011 | 700 |
| 14 | Cell Biology | 24 | 3.2K | 1285 | 827 |
| 15 | Cytology | 25 | 3.1K | 1326 | 849 |
| 16 | Biology | 58 | 3.0K | 1913 | 1863 |
| 17 | Nanostructured Materials | 34 | 2.9K | 969 | 541 |
| 18 | Physics | 74 | 2.9K | 2103 | 2067 |
| 19 | Virology | 7 | 2.7K | 1523 | 641 |
| 20 | Ecology | 32 | 2.6K | 1952 | 1379 |
| 21 | Internet of Things | 58 | 2.5K | 111 | 105 |
| 22 | Science | 64 | 2.4K | 1996 | 2135 |
| 23 | internet | 53 | 2.4K | 166 | 135 |
| 24 | Pollution | 32 | 2.3K | 1726 | 1312 |
| 25 | Materials | 58 | 2.2K | 1561 | 1357 |
| 26 | Signal Processing | 42 | 2.2K | 635 | 475 |
| 27 | Clinical Biochemistry | 2 | 1.9K | 1208 | 116 |
| 28 | nanoscience | 10 | 1.9K | 1592 | 718 |
| 29 | Solar Energy | 57 | 1.9K | 140 | 207 |
| 30 | computer networks | 62 | 1.9K | 336 | 333 |
| 31 | environmental pollution | 23 | 1.8K | 1608 | 1085 |
| 32 | Wireless Communication Systems | 42 | 1.8K | 546 | 372 |
| 33 | Information Science | 23 | 1.8K | 785 | 398 |
| 34 | Environment | 27 | 1.7K | 1542 | 1499 |
| 35 | Biophysics | 63 | 1.7K | 1230 | 1326 |
| 36 | Neurology | 32 | 1.6K | 1402 | 1197 |
| 37 | Artificial Intelligence | 55 | 1.6K | 784 | 803 |
| 38 | Environmental Policy | 31 | 1.6K | 865 | 783 |
| 39 | coal | 26 | 1.5K | 426 | 308 |
| 40 | Electrochemistry | 30 | 1.5K | 1419 | 890 |
| 41 | Research | 50 | 1.5K | 2040 | 1889 |
| 42 | Biomass Energy | 26 | 1.4K | 698 | 658 |
| 42 | Environmental Management | 20 | 1.4K | 1061 | 749 |
| 44 | Water pollution | 16 | 1.3K | 1166 | 742 |
| 45 | Medical Technology | 8 | 1.2K | 847 | 222 |
| 46 | Catalysis | 31 | 1.1K | 1329 | 1326 |
| 47 | environmental protection | 35 | 1.1K | 870 | 939 |
| 48 | Environmental monitoring | 13 | 1.1K | 1863 | 1189 |
| 49 | energy conservation | 23 | 1.1K | 569 | 646 |
| 50 | Medical genetics | 31 | 1.0K | 682 | 816 |
| 51 | Materials Science | 45 | 1.0K | 1227 | 1429 |
| 52 | Environmental Health | 30 | 993 | 1628 | 1660 |
| 53 | Systems Engineering | 22 | 988 | 679 | 453 |
| 54 | Computer Science | 16 | 966 | 755 | 227 |
| 55 | Green Chemistry | 13 | 909 | 803 | 649 |
| 56 | energy development | 2 | 907 | 1096 | 257 |
| 57 | Energy Storage | 25 | 900 | 298 | 311 |
| 58 | Bioinformatics | 30 | 899 | 514 | 571 |
| 58 | fuel cells | 11 | 899 | 621 | 453 |
| 60 | management | 12 | 897 | 1783 | 1216 |
| 61 | Recycling | 4 | 886 | 480 | 188 |
| 62 | Sustainable Engineering | 17 | 883 | 580 | 485 |
| 63 | Energy Conversion | 12 | 860 | 559 | 573 |
| 64 | Immunology | 17 | 859 | 1165 | 1038 |
| 65 | Biomedical Engineering | 23 | 829 | 1805 | 1595 |
| 66 | Educational Technology | 4 | 814 | 1413 | 315 |
| 67 | Human genetics | 17 | 794 | 714 | 1110 |
| 67 | Cancer | 16 | 794 | 1150 | 1068 |
| 69 | Human-Computer Interaction | 21 | 746 | 394 | 348 |
| 70 | solar power | 18 | 734 | 176 | 230 |
| 70 | solar cells | 18 | 734 | 217 | 259 |
| 72 | actuators | 8 | 729 | 1374 | 792 |
| 72 | transducers | 8 | 729 | 1374 | 792 |
| 74 | Computational Biology | 26 | 716 | 683 | 767 |
| 75 | Multimedia Systems | 12 | 684 | 846 | 349 |
| 76 | Energy Policy | 18 | 669 | 1086 | 1215 |
| 77 | Environmental Engineering | 25 | 667 | 1205 | 1341 |
| 78 | Industrial Engineering | 9 | 597 | 992 | 566 |
| 78 | Detectors | 28 | 597 | 341 | 389 |
| 80 | Telecommunication Systems | 17 | 584 | 558 | 343 |
| 81 | Immunotherapy | 18 | 581 | 584 | 708 |
| 82 | Database Management | 24 | 542 | 195 | 257 |
| 83 | clay | 2 | 535 | 984 | 274 |
| 84 | Electronics | 13 | 534 | 1673 | 1134 |
| 85 | Engineering | 23 | 523 | 1561 | 1373 |
| 86 | Biotechnology | 12 | 519 | 2749 | 2503 |
| 87 | genome | 13 | 511 | 579 | 716 |
| 88 | Medical Physics | 2 | 510 | 1554 | 618 |
| 89 | Analytical Chemistry | 9 | 502 | 2449 | 1871 |
| 90 | Archaeology | 19 | 498 | 474 | 384 |
| 90 | carbon monoxide | 4 | 498 | 261 | 82 |
| 92 | Biocompatible Materials | 16 | 485 | 1594 | 1832 |
| 93 | Natural history | 3 | 472 | 2775 | 2245 |
| 94 | Data Mining | 14 | 463 | 577 | 593 |
| 95 | Physiology | 21 | 455 | 1488 | 1732 |
| 96 | Cell death | 16 | 432 | 443 | 640 |
| 97 | Membranes | 7 | 426 | 1110 | 911 |
| 98 | Databases | 16 | 423 | 118 | 138 |
| 99 | Optics | 17 | 414 | 1926 | 1545 |
| 100 | Genetics | 12 | 411 | 1536 | 1637 |
| 101 | Optical materials | 11 | 407 | 1404 | 1373 |
| 102 | Calorimetry | 4 | 405 | 1095 | 291 |
| 102 | Thermal analysis | 4 | 405 | 1095 | 291 |
| 104 | Computer Graphics | 9 | 400 | 976 | 671 |
| 105 | Nuclear Physics | 21 | 398 | 1847 | 1863 |
| 106 | Neurochemistry | 4 | 387 | 1717 | 1113 |
| 107 | Earth Sciences | 14 | 385 | 1510 | 1389 |
| 108 | Neurobiology | 8 | 383 | 920 | 911 |
| 109 | Cybernetics | 5 | 381 | 1198 | 748 |
| 110 | Solid State Physics | 17 | 368 | 1810 | 1696 |
| 110 | Energy Harvesting | 3 | 368 | 431 | 342 |
| 112 | visualization | 7 | 366 | 852 | 362 |
| 113 | economic policy | 12 | 362 | 1169 | 748 |
| 114 | Electrical Engineering | 16 | 352 | 1450 | 1057 |
| 115 | Social policy | 10 | 344 | 484 | 318 |
| 116 | Social Sciences | 21 | 342 | 1199 | 1208 |
| 117 | Metabolism | 15 | 339 | 967 | 1276 |
| 118 | Environmental Chemistry | 6 | 329 | 1416 | 1240 |
| 118 | Sites | 7 | 329 | 335 | 311 |
| 120 | Statistical physics | 16 | 325 | 1584 | 1609 |
| 121 | Public Health | 15 | 323 | 2091 | 2215 |
| 122 | Carbon | 6 | 321 | 892 | 891 |
| 123 | Technology | 18 | 318 | 1483 | 1700 |
| 124 | Economic History | 13 | 301 | 1570 | 1302 |
| 125 | Surface Chemistry | 8 | 298 | 2296 | 2108 |
| 125 | human behavior | 8 | 298 | 1386 | 1614 |
| 127 | Nanochemistry | 3 | 297 | 1269 | 441 |
| 128 | Semiconductors | 8 | 296 | 1358 | 860 |
| 129 | Neural circuitry | 14 | 292 | 885 | 1143 |
| 130 | International Finance | 13 | 291 | 788 | 859 |
| 131 | Image Processing | 12 | 290 | 1134 | 1219 |
| 132 | International Relations | 10 | 285 | 511 | 372 |
| 132 | Australia | 9 | 285 | 909 | 647 |
| 134 | Information Systems | 9 | 284 | 712 | 631 |
| 135 | Biomass | 4 | 280 | 563 | 396 |
| 136 | Social Psychology | 7 | 270 | 1415 | 1216 |
| 137 | big data | 6 | 263 | 321 | 218 |
| 138 | Adolescent | 4 | 260 | 1654 | 997 |
| 139 | Operations Research | 19 | 259 | 884 | 1212 |
| 140 | Bioengineering | 5 | 258 | 2881 | 2494 |
| 141 | Medical Oncology | 5 | 257 | 1037 | 881 |
| 142 | Child | 4 | 256 | 1708 | 1120 |
| 143 | Endocrinology | 10 | 254 | 1345 | 1558 |
| 144 | Allergy | 3 | 251 | 847 | 762 |
| 145 | Energy Consumption | 1 | 248 | 706 | 267 |
| 146 | World Wide Web | 7 | 245 | 163 | 92 |
| 147 | Composite Materials | 17 | 242 | 1148 | 1758 |
| 148 | Behavior | 7 | 241 | 1886 | 1983 |
| 149 | Heat Exchangers | 6 | 240 | 903 | 864 |
| 150 | Analytical Biochemistry | 5 | 237 | 1294 | 904 |
| 151 | Genomics | 18 | 236 | 1113 | 1654 |
| 152 | Intelligent Transportation Systems | 13 | 234 | 440 | 707 |
| 153 | radioactive waste | 4 | 231 | 677 | 741 |
| 153 | industrial waste | 4 | 231 | 706 | 744 |
| 153 | Hazardous waste | 4 | 231 | 811 | 799 |
| 156 | Numerical Analysis | 2 | 226 | 2642 | 1096 |
| 156 | Bioremediation | 5 | 226 | 585 | 477 |
| 158 | Polymers | 11 | 224 | 2395 | 2386 |
| 159 | Optical Communications | 10 | 223 | 344 | 309 |
| 159 | Access to Information | 4 | 223 | 107 | 121 |
| 159 | Information dissemination | 4 | 223 | 107 | 121 |
| 162 | Fluid Mechanics | 1 | 221 | 2079 | 796 |
| 163 | Colloids | 6 | 219 | 2498 | 2417 |
| 164 | Ceramics | 6 | 218 | 1030 | 707 |
| 165 | Diabetes | 10 | 216 | 930 | 1208 |
| 166 | Humanities | 11 | 214 | 802 | 538 |
| 166 | Epidemiology | 10 | 214 | 1698 | 1790 |
| 168 | Cloud Computing | 6 | 213 | 152 | 139 |
| 169 | Economics | 8 | 210 | 2509 | 2048 |
| 169 | polymerization | 9 | 210 | 2239 | 2109 |
| 171 | Immunopathology | 11 | 209 | 545 | 736 |
| 172 | Toxicology | 4 | 208 | 3253 | 2713 |
| 173 | Immunity | 3 | 204 | 1380 | 1278 |
| 174 | Cognitive Radio Networks | 5 | 202 | 127 | 104 |
| 175 | miniaturization | 3 | 199 | 1648 | 1256 |
| 176 | Microelectronics | 2 | 198 | 1785 | 1147 |
| 177 | Photonics | 12 | 196 | 966 | 1258 |
| 177 | Neurons | 2 | 196 | 585 | 749 |
| 179 | Solid State Chemistry | 7 | 195 | 1758 | 1504 |
| 180 | United States | 12 | 191 | 2308 | 2553 |
| 181 | Transportation | 12 | 189 | 753 | 1010 |
| 181 | Parkinson's disease | 2 | 189 | 288 | 141 |
| 183 | Fuzzy systems | 6 | 188 | 1209 | 727 |
| 184 | sanitation | 3 | 187 | 1284 | 1311 |
| 185 | Condensed Matter | 9 | 185 | 1805 | 1792 |
| 186 | Stem cells | 16 | 180 | 520 | 885 |
| 186 | Decision making | 7 | 180 | 861 | 879 |
| 188 | Nervous system | 7 | 179 | 1411 | 1522 |
| 189 | Sustainable Development | 10 | 175 | 995 | 1469 |
| 189 | Inflammation | 1 | 175 | 1465 | 882 |
| 189 | cell physiology | 4 | 175 | 1106 | 1111 |
| 192 | Technology Assessment | 3 | 174 | 399 | 349 |
| 193 | Microbiology | 7 | 172 | 3397 | 3632 |
| 193 | lasers | 3 | 172 | 2041 | 1230 |
| 195 | Transnational corporations | 5 | 171 | 218 | 219 |
| 196 | Nanostructures | 6 | 170 | 1411 | 1440 |
| 197 | Computer Engineering | 7 | 168 | 526 | 457 |
| 198 | mass transfer | 4 | 164 | 1474 | 1284 |
| 199 | free radicals | 4 | 162 | 1043 | 1149 |
| 200 | Information management | 3 | 160 | 59 | 29 |
| 201 | Computational Intelligence | 9 | 159 | 263 | 338 |
| 202 | Metabolic diseases | 7 | 156 | 1170 | 1480 |
| 203 | Pharmacology | 4 | 154 | 3366 | 2946 |
| 204 | Medical Laboratory Science | 7 | 152 | 1197 | 1571 |
| 204 | software | 2 | 152 | 1250 | 862 |
| 206 | Geographic information systems | 5 | 151 | 837 | 581 |
| 207 | Logistics | 9 | 149 | 230 | 499 |
| 208 | Mineral resources | 6 | 148 | 354 | 539 |
| 209 | Research Design | 1 | 146 | 1590 | 831 |
| 210 | Photochemistry | 4 | 145 | 1451 | 1240 |
| 210 | Photobiology | 4 | 145 | 1186 | 1001 |
| 210 | geological modeling | 6 | 145 | 292 | 277 |
| 213 | Diagnostic Imaging | 5 | 144 | 1290 | 1114 |
| 213 | Electrochemical Analysis | 4 | 144 | 1393 | 1176 |
| 213 | Hormones | 5 | 144 | 868 | 921 |
| 216 | Islam | 16 | 141 | 72 | 145 |
| 217 | Environmental Toxicology | 2 | 140 | 2531 | 2002 |
| 217 | pollutants | 2 | 140 | 2042 | 1622 |
| 217 | Environmental pollutants | 2 | 140 | 2361 | 1845 |
| 217 | environmental exposure | 2 | 140 | 2086 | 1571 |
| 221 | Astronomy | 7 | 139 | 1690 | 1845 |
| 222 | Computational Complexity | 11 | 136 | 436 | 506 |
| 223 | Diabetes mellitus | 5 | 135 | 1228 | 1389 |
| 223 | Cognitive Science | 5 | 135 | 1180 | 1274 |
| 225 | Linguistics | 7 | 133 | 870 | 781 |
| 226 | Oxidative stress | 3 | 132 | 803 | 991 |
| 226 | Oxidation-reduction | 3 | 132 | 737 | 869 |
| 228 | Bioethics | 12 | 130 | 416 | 522 |
| 228 | Water quality management | 7 | 130 | 1118 | 1215 |
| 230 | Business | 5 | 129 | 1722 | 1926 |
| 231 | Petroleum Engineering | 5 | 128 | 496 | 490 |
| 232 | Child psychology | 5 | 127 | 1034 | 1170 |
| 233 | Sports Medicine | 18 | 126 | 975 | 1514 |
| 234 | Smart Materials | 12 | 124 | 376 | 673 |
| 234 | Autism | 6 | 124 | 445 | 613 |
| 236 | Pathology | 6 | 123 | 1157 | 1370 |
| 237 | Quantum theory | 5 | 122 | 802 | 692 |
| 238 | Social Networks | 4 | 118 | 227 | 256 |
| 238 | Online social networks | 4 | 118 | 206 | 185 |
| 240 | Geophysics | 5 | 117 | 2354 | 2333 |
| 240 | cell interaction | 6 | 117 | 650 | 940 |
| 242 | sustainability | 3 | 114 | 859 | 865 |
| 243 | Mobile Computing | 9 | 109 | 577 | 850 |
| 244 | Obesity | 6 | 105 | 1156 | 1566 |
| 244 | natural gas | 4 | 105 | 268 | 326 |
| 246 | Ultrasonics | 2 | 104 | 1420 | 1265 |
| 246 | Social Change | 4 | 104 | 889 | 1243 |
| 246 | Sonochemistry | 2 | 104 | 822 | 865 |
| 249 | Automation | 4 | 103 | 1875 | 1909 |
| 249 | Public Policy | 2 | 103 | 1928 | 1459 |
| 251 | Geriatrics | 3 | 101 | 2309 | 1882 |
| 251 | Middle East | 6 | 101 | 668 | 596 |
| 253 | Egypt | 2 | 100 | 745 | 506 |
| 254 | gene mapping | 4 | 99 | 1431 | 1718 |
| 255 | Food Microbiology | 3 | 97 | 1114 | 1316 |
| 255 | Medical Ethics | 6 | 97 | 734 | 727 |
| 257 | Speech-Language Pathology | 2 | 96 | 361 | 226 |
| 257 | Waste management | 4 | 96 | 1200 | 1118 |
| 257 | automatic speech recognition | 2 | 96 | 186 | 132 |
| 260 | Mental Disorders | 3 | 95 | 2158 | 2080 |
| 261 | Nanophotonics | 1 | 93 | 554 | 344 |
| 261 | Combustion | 3 | 93 | 1154 | 1102 |
| 261 | Ubiquitous computing | 10 | 93 | 35 | 93 |
| 264 | Endocrine glands | 1 | 92 | 411 | 407 |
| 264 | Sports | 15 | 92 | 908 | 1470 |
| 264 | Money | 5 | 92 | 214 | 418 |
| 267 | Quality Control | 4 | 91 | 1447 | 1570 |
| 267 | food technology | 4 | 91 | 2102 | 2331 |
| 267 | Biodegradation | 3 | 91 | 739 | 815 |
| 267 | Magnetic Materials | 3 | 91 | 1451 | 1322 |
| 271 | Power Electronics | 8 | 89 | 652 | 1018 |
| 272 | Microstructure | 1 | 88 | 1534 | 615 |
| 273 | Psychology | 4 | 87 | 3740 | 3405 |
| 273 | Mathematics | 8 | 87 | 3857 | 3627 |
| 273 | Production Engineering | 6 | 87 | 1376 | 1523 |
| 276 | Cytogenetics | 5 | 86 | 900 | 1247 |
| 277 | Signal Transduction | 4 | 85 | 1107 | 1388 |
| 277 | food handling | 3 | 85 | 881 | 1067 |
| 277 | Antibodies | 5 | 85 | 390 | 492 |
| 277 | Antigens | 5 | 85 | 515 | 622 |
| 281 | Histology | 2 | 82 | 1815 | 1614 |
| 281 | Medical Microbiology | 6 | 82 | 1291 | 1926 |
| 283 | Sociology | 5 | 81 | 2299 | 2399 |
| 283 | Africa | 4 | 81 | 1291 | 980 |
| 285 | nucleic acids | 3 | 80 | 1324 | 1483 |
| 286 | Global warming | 10 | 79 | 16 | 142 |
| 286 | Graphene | 1 | 79 | 258 | 184 |
| 288 | Geology | 3 | 77 | 2434 | 2227 |
| 289 | Manufacturing Processes | 7 | 74 | 1513 | 2009 |
| 290 | Pharmacogenetics | 8 | 73 | 463 | 865 |
| 290 | Mental Health | 1 | 73 | 2227 | 1374 |
| 292 | Hematopoietic stem cell transplantation | 2 | 71 | 486 | 536 |
| 292 | China | 3 | 71 | 2604 | 2451 |
| 294 | Chemical industry | 3 | 70 | 1258 | 1118 |
| 294 | Genetic therapy | 5 | 70 | 677 | 981 |
| 296 | Psychiatry | 5 | 69 | 2627 | 3136 |
| 296 | city planning | 8 | 69 | 931 | 1517 |
| 298 | Industrial Microbiology | 2 | 67 | 2111 | 2147 |
| 298 | Developing countries | 11 | 67 | 1118 | 2107 |
| 300 | Asia | 4 | 66 | 2459 | 2279 |
| 300 | Spectrum analysis | 3 | 66 | 3443 | 3386 |
| 300 | planning | 3 | 66 | 760 | 724 |
| 300 | DNA polymerases | 2 | 66 | 415 | 680 |
| 304 | Cryptography | 3 | 65 | 682 | 451 |
| 305 | Developmental Biology | 3 | 64 | 1623 | 1927 |
| 305 | Aquaculture | 1 | 64 | 1904 | 1373 |
| 307 | Flexible manufacturing systems | 2 | 63 | 533 | 521 |
| 307 | Aerosols | 1 | 63 | 814 | 539 |
| 307 | marketing | 4 | 63 | 1659 | 2012 |
| 310 | Health Services Research | 1 | 62 | 2072 | 1371 |
| 310 | Primary health care | 1 | 62 | 2216 | 1495 |
| 310 | particles | 1 | 62 | 1639 | 1128 |
| 310 | Granular materials | 1 | 62 | 1069 | 799 |
| 310 | biochemical markers | 3 | 62 | 586 | 638 |
| 315 | Quality Assurance | 1 | 61 | 725 | 324 |
| 315 | Investment analysis | 4 | 61 | 832 | 974 |
| 317 | Bacteriology | 1 | 60 | 2138 | 1915 |
| 317 | Synaptic Transmission | 1 | 60 | 685 | 559 |
| 317 | Health | 4 | 60 | 1668 | 1938 |
| 317 | commerce | 5 | 60 | 1194 | 1592 |
| 317 | Cell communication | 4 | 60 | 457 | 833 |
| 322 | Database Security | 2 | 59 | 102 | 60 |
| 322 | Economic planning | 1 | 59 | 938 | 640 |
| 324 | Atmospheric Physics | 4 | 58 | 1174 | 1532 |
| 324 | Water Purification | 3 | 58 | 1128 | 1168 |
| 326 | Physical Chemistry | 3 | 57 | 1968 | 2042 |
| 326 | Metallurgy | 3 | 57 | 2050 | 1899 |
| 326 | gene therapy | 4 | 57 | 726 | 1046 |
| 326 | Metals | 3 | 57 | 1911 | 1924 |
| 330 | Genetic engineering | 4 | 56 | 1583 | 2073 |
| 330 | drug resistance | 3 | 56 | 659 | 883 |
| 330 | Corporate governance | 1 | 56 | 1096 | 828 |
| 330 | glycoproteins | 1 | 56 | 676 | 575 |
| 330 | Glycoconjugates | 1 | 56 | 676 | 575 |
| 330 | Oligosaccharides | 1 | 56 | 448 | 329 |
| 330 | glycolipids | 1 | 56 | 676 | 575 |
| 337 | Public Administration | 5 | 55 | 1032 | 1214 |
| 337 | Family | 7 | 55 | 584 | 1006 |
| 337 | families | 7 | 55 | 520 | 834 |
| 337 | government | 3 | 55 | 541 | 474 |
| 337 | data protection | 4 | 55 | 465 | 571 |
| 342 | Respiration | 4 | 54 | 1079 | 1444 |
| 343 | Applied Linguistics | 4 | 53 | 545 | 584 |
| 344 | international trade | 5 | 52 | 535 | 770 |
| 344 | Information society | 4 | 52 | 86 | 205 |
| 346 | Climatology | 2 | 51 | 1838 | 1882 |
| 346 | Interfaces | 3 | 51 | 328 | 368 |
| 348 | Medical innovations | 2 | 50 | 973 | 1357 |
| 349 | Economic Development | 4 | 49 | 1297 | 1794 |
| 349 | Molecular Spectroscopy | 2 | 49 | 2054 | 1990 |
| 351 | Building Materials | 2 | 48 | 1836 | 2151 |
| 351 | sports administration | 5 | 48 | 203 | 402 |
| 351 | finance | 8 | 48 | 1504 | 2317 |
| 354 | Hydrology | 5 | 47 | 1792 | 2421 |
| 354 | Genetic epidemiology | 1 | 47 | 368 | 309 |
| 354 | Gene expression regulation | 2 | 47 | 1032 | 1090 |
| 354 | Cell differentiation | 3 | 47 | 1177 | 1677 |
| 354 | DNA methylation | 2 | 47 | 318 | 457 |
| 354 | heredity | 1 | 47 | 997 | 700 |
| 354 | Aging | 3 | 47 | 2152 | 2352 |
| 361 | Cross-Cultural Studies | 2 | 46 | 927 | 923 |
| 361 | Molecules | 4 | 46 | 1329 | 1383 |
| 361 | cross-cultural comparison | 2 | 46 | 663 | 642 |
| 364 | Urban Policy | 1 | 45 | 1398 | 1166 |
| 365 | Critical Care | 3 | 44 | 1065 | 1423 |
| 365 | Critical Care Medicine | 3 | 44 | 1021 | 1393 |
| 365 | Infection control | 1 | 44 | 588 | 516 |
| 365 | Synthetic biology | 1 | 44 | 507 | 457 |
| 369 | Astrophysics | 1 | 43 | 3330 | 2739 |
| 369 | Atmospheric Chemistry | 3 | 43 | 773 | 1137 |
| 371 | Thermodynamics | 3 | 42 | 1279 | 1174 |
| 371 | emergency management | 1 | 42 | 1144 | 933 |
| 371 | Risk assessment | 1 | 42 | 1162 | 791 |
| 371 | Cyberterrorism | 1 | 42 | 120 | 116 |
| 375 | Surgery | 2 | 41 | 1326 | 1408 |
| 375 | Microfluidics | 1 | 41 | 404 | 365 |
| 377 | Agricultural Chemistry | 1 | 40 | 2758 | 2521 |
| 377 | Hydraulic Engineering | 2 | 40 | 975 | 985 |
| 379 | Diagnosis | 2 | 39 | 472 | 514 |
| 380 | Inorganic Chemistry | 1 | 38 | 121 | 117 |
| 380 | Municipal Engineering | 1 | 38 | 691 | 614 |
| 380 | Bioinorganic chemistry | 1 | 38 | 1885 | 1695 |
| 380 | Lightweight concrete | 1 | 38 | 703 | 901 |
| 380 | concrete | 1 | 38 | 1325 | 1376 |
| 385 | Drug design | 3 | 37 | 1436 | 1897 |
| 386 | Information Theory | 2 | 36 | 1525 | 1506 |
| 386 | environmental indicators | 2 | 36 | 1356 | 1817 |
| 386 | Brain | 3 | 36 | 2111 | 2706 |
| 386 | disease susceptibility | 1 | 36 | 115 | 171 |
| 386 | multimedia | 1 | 36 | 811 | 781 |
| 386 | Interactive multimedia | 1 | 36 | 953 | 874 |
| 386 | symptoms | 1 | 36 | 115 | 171 |
| 393 | Neurotoxicology | 1 | 35 | 962 | 1007 |
| 393 | Clinical Immunology | 2 | 35 | 992 | 1220 |
| 393 | Adolescent Psychology | 3 | 35 | 780 | 1060 |
| 393 | enzymes | 3 | 35 | 1353 | 1876 |
| 397 | Mechanical Engineering | 4 | 34 | 2087 | 2335 |
| 397 | Software Engineering | 3 | 34 | 1020 | 1209 |
| 397 | Software Maintenance | 3 | 34 | 166 | 245 |
| 400 | Tourism | 2 | 33 | 1957 | 2395 |
| 400 | Chromosome mapping | 2 | 33 | 1774 | 2226 |
| 402 | Functional Genomics | 3 | 32 | 232 | 528 |
| 403 | Geography | 3 | 31 | 1873 | 2375 |
| 403 | Structural design | 2 | 31 | 1047 | 1150 |
| 403 | Systems Biology | 5 | 31 | 1034 | 1952 |
| 403 | Computational Linguistics | 5 | 31 | 363 | 635 |
| 403 | Quantum Gravity | 1 | 31 | 2288 | 2014 |
| 403 | Foodborne diseases | 1 | 31 | 427 | 427 |
| 409 | Remote Sensing | 4 | 30 | 1281 | 1628 |
| 409 | Behavioral research | 1 | 30 | 1161 | 824 |
| 409 | Solitons | 4 | 30 | 1076 | 1695 |
| 409 | Fractals | 4 | 30 | 1082 | 1700 |
| 409 | Chaos | 4 | 30 | 1076 | 1695 |
| 409 | System analysis | 5 | 30 | 1880 | 2851 |
| 409 | infection | 2 | 30 | 1496 | 1817 |
| 409 | disease outbreaks | 2 | 30 | 539 | 764 |
| 409 | Epidemics | 2 | 30 | 525 | 754 |
| 409 | Vaccines | 6 | 30 | 987 | 1995 |
| 419 | Politics | 2 | 29 | 589 | 521 |
| 419 | Social problems | 1 | 29 | 983 | 944 |
| 419 | construction industry | 1 | 29 | 288 | 225 |
| 419 | Europe | 2 | 29 | 3014 | 3006 |
| 423 | Embedded Systems | 2 | 27 | 264 | 281 |
| 423 | Precision medicine | 2 | 27 | 249 | 285 |
| 423 | Adsorption | 2 | 27 | 278 | 407 |
| 423 | Homeostasis | 1 | 27 | 583 | 870 |
| 423 | Dementia | 3 | 27 | 1165 | 1150 |
| 423 | Alzheimer's disease | 3 | 27 | 1172 | 1207 |
| 423 | Molecular structure | 2 | 27 | 2728 | 2830 |
| 423 | Cell metabolism | 1 | 27 | 986 | 1144 |
| 431 | Education | 3 | 26 | 3407 | 3727 |
| 431 | Obstetrics | 1 | 26 | 2373 | 2239 |
| 431 | Biomarkers | 2 | 26 | 521 | 665 |
| 431 | Ceramic materials | 1 | 26 | 1929 | 1815 |
| 431 | United Kingdom | 4 | 26 | 1129 | 1799 |
| 431 | Pregnancy | 1 | 26 | 1257 | 1188 |
| 437 | Fracture mechanics | 2 | 25 | 1496 | 1768 |
| 437 | pigments | 1 | 25 | 1382 | 1425 |
| 439 | Engineering Mathematics | 1 | 24 | 2703 | 2183 |
| 439 | North Africa | 3 | 24 | 163 | 125 |
| 439 | biomedicine | 1 | 24 | 872 | 988 |
| 442 | population geography | 1 | 23 | 669 | 694 |
| 443 | Global Health | 4 | 22 | 854 | 1568 |
| 443 | Clinical Chemistry | 2 | 22 | 2382 | 2977 |
| 443 | Natural resources | 1 | 22 | 1156 | 1234 |
| 443 | Hydrodynamics | 1 | 22 | 831 | 946 |
| 443 | Chemical processes | 2 | 22 | 726 | 923 |
| 443 | Tropical Medicine | 2 | 22 | 1840 | 2244 |
| 449 | Nuclear Medicine | 5 | 21 | 636 | 1048 |
| 449 | Genetic disorders | 1 | 21 | 572 | 653 |
| 449 | Child Development | 4 | 21 | 1446 | 2349 |
| 449 | Visual Perception | 2 | 21 | 1448 | 1781 |
| 449 | water reuse | 2 | 21 | 456 | 812 |
| 449 | Reproduction | 3 | 21 | 1823 | 2454 |
| 449 | scientific societies | 1 | 21 | 1138 | 1197 |
| 449 | Memory | 2 | 21 | 1574 | 2056 |
| 449 | Attention | 2 | 21 | 1498 | 1913 |
| 449 | Perception | 2 | 21 | 1616 | 1992 |
| 459 | Zoology | 1 | 20 | 3050 | 2749 |
| 459 | Information Retrieval | 3 | 20 | 458 | 858 |
| 459 | Exercise | 3 | 20 | 1455 | 1939 |
| 459 | Agriculture | 1 | 20 | 2884 | 2773 |
| 463 | Hematology | 1 | 19 | 1974 | 2031 |
| 463 | Neuropsychology | 1 | 19 | 2729 | 2860 |
| 463 | Neurophysiology | 1 | 19 | 3106 | 3274 |
| 463 | Coding Theory | 2 | 19 | 476 | 500 |
| 463 | Russia | 1 | 19 | 396 | 138 |
| 463 | atmospheric models | 1 | 19 | 815 | 955 |
| 463 | Soviet Union | 1 | 19 | 1263 | 854 |
| 463 | Informatics | 1 | 19 | 1270 | 1376 |
| 471 | Traffic Engineering | 4 | 18 | 334 | 861 |
| 471 | Health Services Administration | 1 | 18 | 1561 | 1629 |
| 471 | Dynamics | 3 | 18 | 1649 | 2113 |
| 471 | Mathematical Physics | 3 | 18 | 2641 | 3067 |
| 471 | Biofeedback | 1 | 18 | 242 | 367 |
| 471 | adolescence | 2 | 18 | 1087 | 1529 |
| 471 | behavior therapy | 1 | 18 | 1140 | 1222 |
| 471 | Youth | 2 | 18 | 802 | 1193 |
| 471 | health services | 1 | 18 | 1534 | 1600 |
| 471 | economic development projects | 1 | 18 | 391 | 449 |
| 471 | Immune system | 1 | 18 | 1175 | 1390 |
| 471 | Psychophysiology | 1 | 18 | 3037 | 3278 |
| 483 | Nutrition | 2 | 17 | 3644 | 4580 |
| 483 | Intelligent Control Systems | 2 | 17 | 1521 | 1636 |
| 483 | Astrocytes | 1 | 17 | 635 | 862 |
| 483 | Porous materials | 2 | 17 | 978 | 1279 |
| 487 | Orthopedics | 2 | 16 | 1352 | 1714 |
| 487 | Geochemistry | 1 | 16 | 2362 | 2617 |
| 487 | Metastasis | 1 | 16 | 309 | 554 |
| 487 | Cosmochemistry | 1 | 16 | 1224 | 1487 |
| 487 | East Asia | 2 | 16 | 823 | 1076 |
| 487 | Mental illness | 1 | 16 | 2100 | 2437 |
| 487 | sports injuries | 2 | 16 | 683 | 955 |
| 494 | Nanoparticles | 3 | 15 | 1788 | 2734 |
| 494 | Quality of life | 1 | 15 | 2094 | 2470 |
| 496 | Nuclear Engineering | 2 | 14 | 1569 | 1856 |
| 496 | Ethics | 2 | 14 | 1112 | 1558 |
| 496 | Combinatorial optimization | 2 | 14 | 690 | 837 |
| 496 | Religion | 1 | 14 | 1447 | 983 |
| 496 | Qualitative Research | 2 | 14 | 639 | 970 |
| 496 | Developmental Disabilities | 2 | 14 | 1085 | 1642 |
| 496 | Radio waves | 1 | 14 | 1166 | 1297 |
| 496 | Radio | 1 | 14 | 1843 | 1940 |
| 496 | proteins | 2 | 14 | 1947 | 2641 |
| 505 | Food Science | 1 | 13 | 465 | 531 |
| 505 | Environmental Geology | 1 | 13 | 2264 | 2584 |
| 505 | Environmental Law | 1 | 13 | 1511 | 1976 |
| 505 | Organometallic chemistry | 1 | 13 | 2830 | 2937 |
| 505 | Ocean Engineering | 1 | 13 | 2096 | 2411 |
| 505 | Fisheries | 1 | 13 | 2082 | 2193 |
| 511 | Dermatology | 1 | 12 | 1777 | 1939 |
| 511 | Human Geography | 1 | 12 | 1673 | 1760 |
| 511 | Environmental Economics | 2 | 12 | 529 | 868 |
| 511 | Human Rights | 2 | 12 | 710 | 1031 |
| 511 | civil rights | 2 | 12 | 503 | 748 |
| 511 | Political Participation | 2 | 12 | 434 | 658 |
| 511 | Entrepreneurship | 2 | 12 | 1252 | 2040 |
| 511 | Citizenship | 2 | 12 | 191 | 405 |
| 511 | Developmental Immunology | 1 | 12 | 919 | 1171 |
| 511 | Plastics | 1 | 12 | 2322 | 2484 |
| 511 | aromatic plants | 1 | 12 | 492 | 540 |
| 511 | water supply | 1 | 12 | 1263 | 1613 |
| 511 | Library Science | 1 | 12 | 1597 | 1464 |
| 511 | Elections | 1 | 12 | 552 | 592 |
| 511 | Steroids | 2 | 12 | 997 | 1571 |
| 511 | Microwaves | 2 | 12 | 1414 | 1717 |
| 527 | Green Technology | 1 | 11 | 877 | 1242 |
| 527 | Integrated Circuits | 3 | 11 | 813 | 1117 |
| 527 | Molecular cloning | 2 | 11 | 1542 | 2276 |
| 527 | micromechanics | 1 | 11 | 950 | 1148 |
| 527 | Genetic recombination | 2 | 11 | 1526 | 2254 |
| 527 | Hospitality industry | 1 | 11 | 818 | 1180 |
| 527 | Recombinant DNA | 2 | 11 | 1592 | 2337 |
| 527 | gene transfer | 1 | 11 | 451 | 613 |
| 527 | genetic transformation | 1 | 11 | 451 | 613 |
| 536 | Quantum electronics | 1 | 10 | 2192 | 2306 |
| 536 | Genetic Research | 2 | 10 | 197 | 480 |
| 536 | Climate change | 2 | 10 | 1084 | 1881 |
| 536 | Microprocessors | 1 | 10 | 1032 | 1225 |
| 536 | Physical fitness | 1 | 10 | 1499 | 1788 |
| 536 | Capital market | 1 | 10 | 815 | 1068 |
| 536 | Islamic civilization | 4 | 10 | 67 | 73 |
| 536 | Investments | 2 | 10 | 713 | 1263 |
| 544 | calcification | 1 | 9 | 708 | 973 |
| 544 | breastfeeding | 1 | 9 | 820 | 1055 |
| 544 | Proteome | 1 | 9 | 1379 | 1815 |
| 544 | Lipids | 2 | 9 | 1370 | 2123 |
| 548 | Language Disorders | 1 | 8 | 1176 | 1402 |
| 548 | Venture Capital | 1 | 8 | 493 | 752 |
| 548 | electric vehicles | 1 | 8 | 525 | 734 |
| 548 | Evolutionary Computation | 1 | 8 | 843 | 1207 |
| 548 | Swarm Intelligence | 1 | 8 | 588 | 855 |
| 548 | Entropy | 2 | 8 | 1477 | 2184 |
| 548 | Securities | 2 | 8 | 458 | 947 |
| 548 | Malaria | 1 | 8 | 949 | 1295 |
| 548 | Humanitarian Assistance | 1 | 8 | 61 | 91 |
| 548 | biological factors | 1 | 8 | 2576 | 3132 |
| 548 | educational planning | 1 | 8 | 730 | 1044 |
| 548 | Endocrine system | 1 | 8 | 926 | 636 |
| 548 | stocks | 2 | 8 | 194 | 617 |
| 548 | Biodiversity | 1 | 8 | 2865 | 3323 |
| 562 | Regional Planning | 2 | 7 | 1645 | 2548 |
| 562 | Financial Engineering | 1 | 7 | 365 | 670 |
| 562 | air quality management | 1 | 7 | 951 | 1442 |
| 562 | Parallel Processing | 2 | 7 | 538 | 1002 |
| 562 | Wind power | 1 | 7 | 529 | 709 |
| 562 | winds | 1 | 7 | 233 | 306 |
| 562 | drug evaluation | 1 | 7 | 1731 | 2236 |
| 562 | Chronic diseases | 1 | 7 | 814 | 1121 |
| 570 | Political Science | 1 | 6 | 2347 | 2330 |
| 570 | Civil Engineering | 1 | 6 | 2158 | 2329 |
| 570 | Architecture | 1 | 6 | 902 | 917 |
| 570 | Computer Vision | 2 | 6 | 1321 | 2036 |
| 570 | Pediatric Neurology | 1 | 6 | 1010 | 1377 |
| 570 | Architectural Design | 1 | 6 | 825 | 1036 |
| 570 | Highway Engineering | 2 | 6 | 472 | 922 |
| 570 | Engineering Ethics | 1 | 6 | 381 | 655 |
| 570 | Disability Studies | 1 | 6 | 473 | 703 |
| 570 | War | 1 | 6 | 393 | 554 |
| 570 | Urban Transportation | 1 | 6 | 296 | 522 |
| 570 | Nonlinear Dynamics | 1 | 6 | 2294 | 2734 |
| 570 | Language and Education | 1 | 6 | 272 | 408 |
| 570 | Mass Media | 1 | 6 | 1359 | 1344 |
| 570 | Professional ethics | 1 | 6 | 549 | 907 |
| 570 | Food | 1 | 6 | 3732 | 4597 |
| 570 | warfare | 1 | 6 | 488 | 732 |
| 570 | Luminescence | 1 | 6 | 1974 | 2411 |
| 570 | data collection | 1 | 6 | 1687 | 2268 |
| 570 | refugees | 1 | 6 | 433 | 628 |
| 570 | Product life cycle | 1 | 6 | 536 | 834 |
| 570 | rehabilitation | 1 | 6 | 2732 | 3387 |
| 592 | Robotics | 1 | 5 | 2334 | 2801 |
| 592 | Intercultural Communication | 2 | 5 | 567 | 1169 |
| 592 | Machine Learning | 1 | 5 | 573 | 766 |
| 592 | Translation | 1 | 5 | 295 | 251 |
| 592 | Reproductive health | 1 | 5 | 1179 | 1673 |
| 592 | Molecular Imaging | 1 | 5 | 743 | 987 |
| 592 | Immunochemistry | 1 | 5 | 1340 | 1798 |
| 592 | Cognitive neuroscience | 1 | 5 | 1337 | 1784 |
| 592 | interfaith relations | 2 | 5 | 58 | 135 |
| 592 | Neuroplasticity | 1 | 5 | 506 | 797 |
| 592 | protein | 1 | 5 | 1573 | 2047 |
| 592 | older people | 1 | 5 | 2117 | 2329 |
| 592 | Christianity | 2 | 5 | 253 | 230 |
| 592 | drug development | 1 | 5 | 1290 | 1877 |
| 592 | human development | 1 | 5 | 1231 | 1759 |
| 592 | Development | 1 | 5 | 1235 | 1711 |
| 592 | Protein engineering | 1 | 5 | 368 | 605 |
| 592 | Women's health | 1 | 5 | 1862 | 2456 |
| 592 | molecular design | 1 | 5 | 411 | 614 |
| 611 | Logic | 1 | 4 | 728 | 855 |
| 611 | International Law | 2 | 4 | 488 | 527 |
| 611 | health services accessibility | 1 | 4 | 1394 | 1967 |
| 611 | Rheology | 1 | 4 | 893 | 1275 |
| 611 | Multiphase Flow | 1 | 4 | 631 | 932 |
| 611 | Travel | 1 | 4 | 1286 | 1822 |
| 611 | Oncogenes | 1 | 4 | 1135 | 1585 |
| 611 | Multilingualism | 1 | 4 | 548 | 887 |
| 611 | Marriage | 1 | 4 | 883 | 1324 |
| 611 | Serbia | 1 | 4 | 301 | 372 |
| 611 | reasoning | 1 | 4 | 809 | 1053 |
| 611 | cultural pluralism | 1 | 4 | 754 | 1092 |
| 623 | Pediatrics | 2 | 3 | 2054 | 3268 |
| 623 | Computer-Aided Design | 1 | 3 | 1830 | 2398 |
| 623 | Patient Safety | 1 | 3 | 164 | 283 |
| 623 | Second Language Acquisition | 1 | 3 | 374 | 711 |
| 623 | arms control | 1 | 3 | 164 | 249 |
| 623 | Plant breeding | 1 | 3 | 1165 | 1694 |
| 623 | Collective security | 1 | 3 | 32 | 52 |
| 623 | Mechanics | 1 | 3 | 1936 | 2427 |
| 623 | dispute settlement | 1 | 3 | 41 | 77 |
| 623 | Humanitarian Law | 1 | 3 | 46 | 71 |
| 623 | Communication in politics | 1 | 3 | 521 | 810 |
| 623 | DNA repair | 1 | 3 | 460 | 756 |
| 623 | System design | 1 | 3 | 389 | 680 |
| 623 | probabilities | 1 | 3 | 1790 | 2057 |
| 623 | Imaging systems | 1 | 3 | 1417 | 1843 |
| 623 | optical devices | 1 | 3 | 822 | 1180 |
| 623 | ground penetrating radar | 1 | 3 | 149 | 309 |
| 623 | eugenics | 1 | 3 | 880 | 1346 |
| 623 | Breeding | 1 | 3 | 1597 | 2228 |
| 642 | Organizational learning | 1 | 2 | 998 | 1752 |
| 642 | Asset Management | 1 | 2 | 152 | 299 |
| 642 | Quantum Communication | 1 | 2 | 316 | 509 |
| 642 | Diffusion of innovations | 1 | 2 | 256 | 573 |
| 642 | Knowledge management | 1 | 2 | 1037 | 1780 |
| 642 | Sarcopenia | 1 | 2 | 620 | 934 |
| 642 | air quality | 1 | 2 | 539 | 1091 |
| 642 | Central Asia | 1 | 2 | 409 | 798 |
| 642 | Muscles | 1 | 2 | 1063 | 1505 |
| 651 | Law | 1 | 1 | 1856 | 2217 |
| 651 | Language Acquisition | 1 | 1 | 608 | 983 |
| 651 | Bilingualism | 1 | 1 | 307 | 627 |
| 651 | Welding | 1 | 1 | 477 | 781 |
| 651 | Islamic philosophy | 1 | 1 | 5 | 7 |
| 651 | Diplomatic relations | 2 | 1 | 769 | 1294 |
| 651 | Comparative Law | 1 | 1 | 477 | 541 |
| 651 | psychotherapy | 1 | 1 | 1703 | 2335 |
| 651 | Social work | 1 | 1 | 2008 | 2834 |
| 651 | psychiatric disorders | 1 | 1 | 118 | 249 |
| 651 | international courts | 3 | 1 | 12 | 80 |
| 651 | statutes | 1 | 1 | 49 | 67 |
| 663 | Ergonomics | 1 | 0 | 1354 | 1997 |
| 663 | Higher Education | 1 | 0 | 1112 | 1854 |
| 663 | Health Policy | 1 | 0 | 2697 | 3837 |
| 663 | Education policy | 1 | 0 | 173 | 445 |
| 663 | Immunopharmacology | 1 | 0 | 1521 | 2214 |
| 663 | Electrocardiography | 1 | 0 | 533 | 864 |
| 663 | foreign policy | 1 | 0 | 471 | 633 |
| 663 | Cell division | 1 | 0 | 617 | 1039 |
| 663 | monetary policy | 2 | 0 | 48 | 325 |
| 663 | Postcolonialism | 1 | 0 | 267 | 527 |
| 663 | Electrophysiology | 1 | 0 | 1220 | 1767 |
| 663 | cytokines | 1 | 0 | 1605 | 2328 |
| 663 | Budget | 1 | 0 | 309 | 594 |
| 663 | Therapeutics | 1 | 0 | 1872 | 2757 |
| 663 | Germany | 1 | 0 | 1141 | 1737 |
| 663 | Microscopy | 1 | 0 | 2010 | 2882 |
| 663 | church and state | 1 | 0 | 246 | 251 |