| 1 | Science | 127 | 9.5K | 2157 | 1766 |
| 2 | Biology | 120 | 9.4K | 2083 | 1673 |
| 3 | Physics | 71 | 8.3K | 3193 | 2018 |
| 4 | Molecular Biology | 140 | 6.9K | 1538 | 1304 |
| 5 | Medicine | 159 | 6.1K | 1873 | 1718 |
| 6 | Psychiatry | 113 | 5.5K | 722 | 593 |
| 7 | Natural history | 10 | 4.9K | 3028 | 1559 |
| 8 | Computational Biology | 99 | 4.7K | 273 | 251 |
| 9 | Chemistry | 85 | 3.8K | 2777 | 2236 |
| 10 | Mental Disorders | 59 | 3.7K | 634 | 465 |
| 11 | Mental illness | 47 | 3.4K | 455 | 302 |
| 12 | Neurology | 57 | 3.1K | 1744 | 1420 |
| 13 | Bioinformatics | 84 | 2.9K | 211 | 295 |
| 14 | Artificial Intelligence | 57 | 2.5K | 844 | 450 |
| 15 | Research | 101 | 2.4K | 1985 | 2157 |
| 16 | Computer Vision | 44 | 2.0K | 157 | 211 |
| 17 | Genomics | 52 | 1.8K | 763 | 626 |
| 18 | brain mapping | 52 | 1.7K | 66 | 109 |
| 19 | Human genetics | 10 | 1.7K | 1679 | 1520 |
| 20 | Public Health | 51 | 1.7K | 1582 | 1389 |
| 21 | genome | 34 | 1.6K | 398 | 484 |
| 22 | Genetics | 38 | 1.5K | 1318 | 1446 |
| 23 | gene mapping | 28 | 1.5K | 643 | 527 |
| 24 | Biochemistry | 67 | 1.4K | 3061 | 3414 |
| 25 | Pharmaceutical Chemistry | 47 | 1.4K | 1179 | 1168 |
| 26 | Image Processing | 42 | 1.3K | 399 | 387 |
| 27 | Biotechnology | 26 | 1.3K | 2904 | 2293 |
| 28 | Decision making | 18 | 1.2K | 515 | 241 |
| 29 | proteins | 29 | 1.2K | 721 | 520 |
| 30 | Chromosome mapping | 25 | 1.2K | 633 | 475 |
| 31 | nucleic acids | 18 | 1.1K | 854 | 785 |
| 32 | Medical genetics | 26 | 1.1K | 1344 | 1382 |
| 33 | Psychophysiology | 45 | 1.0K | 857 | 1091 |
| 34 | Analytical Chemistry | 35 | 1.0K | 1777 | 1611 |
| 35 | Botany | 14 | 1.0K | 2466 | 1511 |
| 36 | Astrophysics | 19 | 988 | 1934 | 1523 |
| 37 | Psychopharmacology | 36 | 981 | 472 | 639 |
| 38 | Diabetes | 38 | 974 | 690 | 1023 |
| 39 | Diabetes mellitus | 37 | 971 | 645 | 986 |
| 40 | Biomedical Engineering | 29 | 929 | 1994 | 1690 |
| 41 | Retina | 3 | 848 | 183 | 106 |
| 41 | eye | 3 | 848 | 222 | 109 |
| 43 | Health Policy | 22 | 822 | 882 | 612 |
| 44 | Bioengineering | 18 | 808 | 2318 | 2138 |
| 45 | Biochemical Engineering | 9 | 794 | 2401 | 1896 |
| 46 | protein | 18 | 793 | 535 | 388 |
| 47 | System analysis | 10 | 792 | 1635 | 585 |
| 48 | Information Systems | 15 | 774 | 551 | 276 |
| 49 | Chromatographic analysis | 32 | 770 | 485 | 384 |
| 50 | Spectrum analysis | 27 | 733 | 2073 | 1902 |
| 51 | Electrophoresis | 24 | 688 | 543 | 476 |
| 52 | Astronomy | 15 | 677 | 1772 | 1510 |
| 53 | Neurophysiology | 25 | 666 | 1283 | 1535 |
| 54 | Diagnostic Imaging | 26 | 647 | 692 | 724 |
| 55 | Neurobiology | 25 | 635 | 720 | 1012 |
| 56 | Pharmacology | 24 | 626 | 2692 | 2715 |
| 57 | Aging | 27 | 624 | 1122 | 1088 |
| 58 | Computer Graphics | 31 | 603 | 425 | 523 |
| 59 | Education | 9 | 598 | 2879 | 975 |
| 60 | Hematology | 5 | 585 | 3323 | 1648 |
| 61 | Immunity | 9 | 578 | 1416 | 1472 |
| 62 | Informatics | 14 | 571 | 338 | 209 |
| 63 | Pediatrics | 9 | 564 | 1956 | 1433 |
| 64 | United States | 18 | 551 | 2666 | 2011 |
| 65 | Engineering | 20 | 548 | 2137 | 1332 |
| 66 | Biophysics | 37 | 545 | 2374 | 3016 |
| 67 | Alzheimer's disease | 176 | 538 | 114 | 449 |
| 68 | Public Policy | 6 | 535 | 1460 | 607 |
| 69 | Ecology | 15 | 529 | 4005 | 3942 |
| 70 | Dementia | 174 | 523 | 104 | 410 |
| 71 | Information Science | 32 | 488 | 629 | 1012 |
| 72 | computer networks | 23 | 485 | 877 | 846 |
| 73 | Cytology | 14 | 482 | 2824 | 2954 |
| 74 | Plants | 6 | 462 | 1887 | 1131 |
| 75 | Immunology | 22 | 459 | 1972 | 2532 |
| 76 | Multimedia Systems | 9 | 441 | 1080 | 299 |
| 77 | Medical Microbiology | 4 | 417 | 2623 | 1599 |
| 78 | Microbiology | 15 | 412 | 4282 | 4578 |
| 79 | Nanotechnology | 18 | 409 | 2799 | 3102 |
| 80 | Epidemiology | 12 | 396 | 2558 | 2114 |
| 81 | Molecular structure | 19 | 395 | 1111 | 1194 |
| 82 | Nutrition | 21 | 392 | 2179 | 2673 |
| 83 | Behavior | 11 | 376 | 2040 | 2104 |
| 84 | Clinical Chemistry | 12 | 372 | 1927 | 1924 |
| 85 | Chromatography | 25 | 369 | 491 | 655 |
| 86 | libraries | 2 | 364 | 1136 | 105 |
| 87 | Allergy | 7 | 360 | 1031 | 1112 |
| 88 | Clinical Psychology | 10 | 357 | 888 | 952 |
| 89 | human behavior | 8 | 355 | 1706 | 1758 |
| 90 | Colloids | 9 | 350 | 2798 | 2441 |
| 91 | Medical Technology | 10 | 349 | 1036 | 771 |
| 91 | Evidence-Based Medicine | 19 | 349 | 371 | 342 |
| 93 | Information Technology | 26 | 346 | 705 | 890 |
| 94 | China | 32 | 344 | 851 | 1171 |
| 95 | Child psychology | 12 | 343 | 810 | 951 |
| 96 | Surface Chemistry | 8 | 340 | 2993 | 2393 |
| 97 | Evolution | 12 | 329 | 1116 | 1251 |
| 98 | Hypertension | 5 | 327 | 1659 | 1436 |
| 99 | Biological Systems | 10 | 320 | 281 | 213 |
| 100 | RNA | 4 | 319 | 522 | 332 |
| 101 | Statistical physics | 6 | 314 | 3329 | 2114 |
| 102 | Cancer | 7 | 313 | 3237 | 2794 |
| 103 | Leukemia | 5 | 310 | 1246 | 901 |
| 104 | Cardiovascular system | 4 | 309 | 1777 | 1532 |
| 105 | Data Mining | 24 | 303 | 374 | 832 |
| 106 | Pharmacognosy | 14 | 301 | 918 | 1197 |
| 106 | Adolescent Medicine | 2 | 301 | 965 | 618 |
| 108 | Computer Science | 16 | 295 | 949 | 728 |
| 109 | Cell Biology | 9 | 293 | 3279 | 3548 |
| 110 | Surface-Active Agents | 6 | 290 | 848 | 661 |
| 110 | Surface properties | 6 | 290 | 924 | 753 |
| 112 | Toxicology | 17 | 286 | 2694 | 3453 |
| 113 | Mathematics | 30 | 285 | 2889 | 2844 |
| 114 | Signal Processing | 24 | 283 | 653 | 879 |
| 114 | Materials | 4 | 283 | 6177 | 3979 |
| 116 | Biogeography | 2 | 282 | 1375 | 860 |
| 117 | ecosystem | 1 | 281 | 2546 | 1018 |
| 118 | Biocompatible Materials | 5 | 280 | 3600 | 3062 |
| 119 | Psychology | 19 | 278 | 2522 | 3002 |
| 120 | Meteorology | 9 | 269 | 1730 | 1846 |
| 121 | Statistics | 17 | 265 | 1394 | 1397 |
| 122 | biological evolution | 9 | 261 | 1458 | 1688 |
| 123 | DNA polymerases | 3 | 260 | 543 | 632 |
| 124 | Medical innovations | 5 | 258 | 988 | 1258 |
| 125 | Telecommunication | 11 | 255 | 1358 | 916 |
| 126 | Cerebral cortex | 19 | 251 | 366 | 749 |
| 127 | psychotherapy | 5 | 249 | 1218 | 831 |
| 128 | Polymers | 10 | 247 | 3424 | 3013 |
| 129 | Physiology | 11 | 242 | 2979 | 3286 |
| 130 | Immunotherapy | 3 | 237 | 2405 | 1604 |
| 131 | Genetic engineering | 5 | 236 | 2183 | 1765 |
| 132 | Hydraulic Engineering | 2 | 235 | 1630 | 627 |
| 132 | Proteome | 6 | 235 | 1034 | 995 |
| 132 | management | 12 | 235 | 2061 | 2196 |
| 135 | data collection | 16 | 232 | 343 | 672 |
| 136 | digital preservation | 1 | 227 | 243 | 24 |
| 136 | Mass Spectrometry | 7 | 227 | 960 | 796 |
| 138 | Robotics | 11 | 226 | 995 | 968 |
| 139 | Optical materials | 1 | 221 | 4070 | 2073 |
| 140 | Immune system | 2 | 218 | 1612 | 1243 |
| 141 | software | 14 | 216 | 299 | 632 |
| 142 | Industrial Microbiology | 2 | 215 | 2903 | 1645 |
| 143 | Molecular Spectroscopy | 12 | 214 | 994 | 1123 |
| 143 | drug development | 3 | 214 | 1353 | 1248 |
| 145 | Electrical Engineering | 13 | 213 | 2191 | 1516 |
| 145 | plant molecular biology | 6 | 213 | 1285 | 1446 |
| 147 | Logic | 13 | 212 | 190 | 132 |
| 147 | polymerization | 6 | 212 | 3521 | 2738 |
| 149 | Obesity | 14 | 209 | 1114 | 1785 |
| 150 | Geriatrics | 10 | 208 | 2139 | 2008 |
| 150 | Wireless Communication Systems | 4 | 208 | 2129 | 1009 |
| 150 | Molecular evolution | 11 | 208 | 874 | 1273 |
| 153 | Drug design | 12 | 207 | 898 | 1245 |
| 154 | Computational Intelligence | 3 | 206 | 1209 | 290 |
| 155 | Cybernetics | 3 | 203 | 1614 | 809 |
| 155 | Environmental Health | 11 | 203 | 3849 | 4698 |
| 157 | Medicinal plants | 11 | 197 | 751 | 1168 |
| 158 | Environmental Microbiology | 5 | 196 | 1275 | 1312 |
| 159 | Plant cells | 3 | 193 | 1287 | 1400 |
| 160 | Mechatronics | 1 | 192 | 1532 | 311 |
| 160 | Dynamics | 1 | 192 | 3452 | 925 |
| 162 | Measurement | 2 | 188 | 1918 | 728 |
| 163 | Telecommunication Systems | 12 | 175 | 841 | 907 |
| 164 | Chemical Engineering | 23 | 174 | 2269 | 3860 |
| 164 | Alternative Medicine | 6 | 174 | 1540 | 1279 |
| 164 | complementary therapies | 6 | 174 | 1697 | 1321 |
| 167 | Systems Biology | 9 | 170 | 1086 | 1068 |
| 168 | Human-Computer Interaction | 11 | 169 | 765 | 986 |
| 169 | Schizophrenia | 4 | 166 | 1140 | 1014 |
| 169 | Sleep Disorders | 14 | 166 | 933 | 1294 |
| 169 | Decision Support Systems | 6 | 166 | 139 | 91 |
| 169 | Computational Complexity | 15 | 166 | 365 | 405 |
| 169 | Sleep | 14 | 166 | 937 | 1302 |
| 174 | Environment | 10 | 161 | 3663 | 5911 |
| 175 | Genes | 9 | 158 | 710 | 835 |
| 176 | Automation | 11 | 156 | 1120 | 1399 |
| 176 | Neural circuitry | 6 | 156 | 1668 | 1688 |
| 176 | Information society | 2 | 156 | 223 | 48 |
| 179 | Computational Chemistry | 5 | 151 | 615 | 614 |
| 179 | Nervous system | 8 | 151 | 1940 | 2599 |
| 181 | Medical Laboratory Science | 2 | 150 | 3218 | 2027 |
| 182 | Systems Engineering | 6 | 148 | 1879 | 1320 |
| 183 | health planning | 6 | 147 | 1876 | 1574 |
| 184 | Structural biology | 4 | 146 | 37 | 37 |
| 184 | Interfaces | 8 | 146 | 113 | 150 |
| 186 | Environmental monitoring | 6 | 145 | 3581 | 3966 |
| 187 | Radiography | 9 | 144 | 409 | 580 |
| 188 | United Kingdom | 2 | 142 | 2497 | 1642 |
| 189 | Climatology | 6 | 141 | 1591 | 1624 |
| 189 | Physical Chemistry | 11 | 141 | 1508 | 2028 |
| 191 | biological factors | 4 | 140 | 2092 | 1674 |
| 192 | Electronics | 8 | 138 | 2859 | 2509 |
| 193 | Metabolic diseases | 13 | 137 | 1537 | 2778 |
| 193 | Animal genetics | 5 | 137 | 512 | 463 |
| 195 | Biosensors | 1 | 134 | 2403 | 1624 |
| 195 | Cell differentiation | 5 | 134 | 1710 | 2151 |
| 195 | Bioelectronics | 1 | 134 | 2100 | 1486 |
| 198 | soil microbiology | 2 | 133 | 2098 | 1804 |
| 198 | Microorganisms | 2 | 133 | 1771 | 1398 |
| 200 | enzymes | 4 | 131 | 1606 | 1553 |
| 201 | Metabolism | 16 | 129 | 1652 | 3243 |
| 202 | Critical Care | 1 | 128 | 3188 | 2106 |
| 202 | Critical Care Medicine | 1 | 128 | 2849 | 2047 |
| 204 | Software Engineering | 10 | 125 | 607 | 657 |
| 204 | Numerical Analysis | 17 | 125 | 1175 | 1614 |
| 204 | Virology | 5 | 125 | 3147 | 3894 |
| 207 | Cognitive Science | 6 | 123 | 1231 | 1405 |
| 208 | Digital Media | 1 | 118 | 433 | 120 |
| 208 | environmental exposure | 4 | 118 | 2125 | 1993 |
| 208 | Online journalism | 1 | 118 | 235 | 91 |
| 211 | Environmental Management | 2 | 117 | 4149 | 3320 |
| 211 | Health | 4 | 117 | 2591 | 2170 |
| 213 | Computer Engineering | 6 | 114 | 555 | 470 |
| 213 | Nanostructures | 2 | 114 | 3259 | 2265 |
| 215 | natural products | 5 | 113 | 1687 | 1468 |
| 216 | Pharmacogenetics | 4 | 112 | 1148 | 1235 |
| 216 | Cheminformatics | 3 | 112 | 377 | 413 |
| 218 | Microprocessors | 9 | 111 | 279 | 308 |
| 218 | gene therapy | 1 | 111 | 2316 | 1437 |
| 218 | peptides | 5 | 111 | 817 | 657 |
| 218 | Membranes | 1 | 111 | 3068 | 2087 |
| 222 | environmental indicators | 1 | 110 | 2151 | 1324 |
| 223 | Oncology | 6 | 109 | 2072 | 3133 |
| 224 | Natural resources | 2 | 106 | 1104 | 822 |
| 225 | Herbal medicine | 7 | 105 | 415 | 824 |
| 225 | Structure-activity relationship | 2 | 105 | 679 | 327 |
| 227 | Hydrodynamics | 1 | 102 | 1090 | 628 |
| 228 | Occupational Health | 3 | 101 | 1494 | 900 |
| 228 | Neurovirology | 3 | 101 | 272 | 254 |
| 228 | occupational diseases | 3 | 101 | 1149 | 1021 |
| 231 | Respiration | 5 | 100 | 1491 | 1732 |
| 232 | Condensed Matter | 6 | 98 | 3127 | 3040 |
| 233 | Systems Analysis | 2 | 97 | 1659 | 943 |
| 233 | DNS | 3 | 97 | 614 | 535 |
| 233 | Biomolecules | 1 | 97 | 994 | 616 |
| 236 | data protection | 3 | 96 | 644 | 349 |
| 237 | Mobile Computing | 3 | 95 | 1396 | 794 |
| 237 | Pediatric Neurology | 2 | 95 | 1561 | 1773 |
| 239 | Radiology | 2 | 92 | 2534 | 1427 |
| 239 | X-rays | 2 | 92 | 1101 | 508 |
| 241 | Endocrinology | 13 | 90 | 2026 | 3867 |
| 241 | Diagnosis | 7 | 90 | 383 | 509 |
| 243 | Computational Linguistics | 12 | 88 | 133 | 278 |
| 244 | Biopharmaceutics | 6 | 87 | 993 | 1454 |
| 244 | drug evaluation | 6 | 87 | 1136 | 1453 |
| 246 | Therapeutics | 3 | 86 | 2304 | 2408 |
| 246 | drug therapy | 3 | 86 | 3037 | 2883 |
| 246 | Fuzzy systems | 4 | 86 | 1820 | 1274 |
| 249 | Industrial Safety | 6 | 84 | 929 | 1114 |
| 249 | Precision medicine | 3 | 84 | 229 | 156 |
| 249 | Stem cells | 5 | 84 | 1603 | 2062 |
| 252 | Medical Imaging | 4 | 83 | 360 | 382 |
| 252 | Magnetic Resonance Imaging | 4 | 83 | 576 | 578 |
| 252 | Computer Architecture | 6 | 83 | 339 | 355 |
| 252 | Analytical Biochemistry | 10 | 83 | 1066 | 2012 |
| 252 | rehabilitation | 3 | 83 | 2772 | 2474 |
| 257 | Geophysics | 4 | 82 | 3827 | 3813 |
| 257 | Animal Nutrition | 2 | 82 | 845 | 531 |
| 257 | Animal breeding | 2 | 82 | 1096 | 765 |
| 260 | Nuclear Physics | 3 | 81 | 4610 | 3781 |
| 260 | Planets | 1 | 81 | 2595 | 2088 |
| 262 | Ophthalmology | 4 | 80 | 1920 | 2065 |
| 262 | Microbial Ecology | 5 | 80 | 2206 | 3348 |
| 262 | Medical Physics | 6 | 80 | 1471 | 1791 |
| 265 | Plant genetic engineering | 2 | 79 | 1369 | 1247 |
| 265 | Gene expression regulation | 1 | 79 | 2095 | 1367 |
| 265 | Autoantibodies | 3 | 79 | 738 | 888 |
| 265 | Autoimmunity | 3 | 79 | 962 | 1172 |
| 265 | DNA methylation | 1 | 79 | 694 | 468 |
| 265 | Autoimmune diseases | 3 | 79 | 816 | 968 |
| 271 | Ethics | 2 | 77 | 1456 | 788 |
| 271 | Health Education | 4 | 77 | 2072 | 2049 |
| 271 | Cognition | 5 | 77 | 1555 | 1879 |
| 274 | Algorithms | 4 | 76 | 724 | 612 |
| 274 | Diet | 7 | 76 | 1844 | 3185 |
| 274 | Cell death | 2 | 76 | 1792 | 1830 |
| 277 | Public Health Administration | 9 | 75 | 237 | 307 |
| 277 | Eating Disorders | 5 | 75 | 758 | 1027 |
| 277 | Feeding and Eating Disorders | 5 | 75 | 731 | 1002 |
| 277 | Transplantation | 3 | 75 | 1536 | 1730 |
| 281 | medical education | 3 | 74 | 2535 | 1911 |
| 282 | Urology | 6 | 73 | 1666 | 2268 |
| 282 | mental processes | 2 | 73 | 534 | 311 |
| 284 | Japan | 1 | 72 | 4131 | 1979 |
| 284 | Egypt | 2 | 72 | 776 | 499 |
| 286 | Raman spectroscopy | 2 | 71 | 1231 | 999 |
| 286 | Infrared spectroscopy | 2 | 71 | 523 | 359 |
| 286 | Learning | 2 | 71 | 1937 | 1521 |
| 289 | Engineering Ethics | 1 | 70 | 458 | 221 |
| 289 | Professional ethics | 1 | 70 | 640 | 280 |
| 289 | Autism | 4 | 70 | 714 | 1001 |
| 292 | Ergonomics | 6 | 68 | 860 | 1064 |
| 292 | Plant Ecology | 1 | 68 | 3062 | 2332 |
| 292 | plant communities | 1 | 68 | 1908 | 1554 |
| 295 | Telecommunications | 2 | 67 | 1277 | 683 |
| 295 | Simulation Methods | 2 | 67 | 1536 | 1061 |
| 297 | Bioorganic chemistry | 6 | 65 | 2531 | 3554 |
| 297 | rare diseases | 3 | 65 | 818 | 917 |
| 299 | Technology | 6 | 64 | 3998 | 4814 |
| 300 | Gerontology | 1 | 63 | 3868 | 2021 |
| 300 | Archaea | 3 | 63 | 28 | 73 |
| 302 | Organic Chemistry | 5 | 62 | 3083 | 3751 |
| 302 | Information Retrieval | 2 | 62 | 744 | 628 |
| 304 | Substance Abuse | 2 | 61 | 2083 | 1741 |
| 304 | Imaging systems | 3 | 61 | 1029 | 682 |
| 306 | Exercise therapy | 2 | 60 | 640 | 348 |
| 306 | Semantic web | 3 | 60 | 162 | 199 |
| 306 | cell physiology | 3 | 60 | 1914 | 2516 |
| 309 | Pharmacogenomics | 2 | 59 | 519 | 527 |
| 309 | personality | 1 | 59 | 2445 | 1879 |
| 311 | Pharmacy | 3 | 58 | 2673 | 2897 |
| 311 | Cryptography | 5 | 58 | 533 | 516 |
| 311 | Computer-Aided Design | 4 | 58 | 1296 | 1489 |
| 311 | Immunopharmacology | 2 | 58 | 1631 | 1478 |
| 311 | Communication | 3 | 58 | 2480 | 2098 |
| 311 | cytokines | 2 | 58 | 2028 | 2016 |
| 317 | Cloud Computing | 2 | 57 | 347 | 262 |
| 317 | Developmental Biology | 4 | 57 | 2218 | 3100 |
| 317 | Cognitive neuroscience | 4 | 57 | 954 | 1366 |
| 320 | Philosophy | 1 | 56 | 2835 | 907 |
| 320 | Molecular Pharmacology | 2 | 56 | 1192 | 1376 |
| 320 | Telemedicine | 3 | 56 | 432 | 584 |
| 323 | Rheumatology | 4 | 55 | 1388 | 1843 |
| 323 | Animal Physiology | 2 | 55 | 231 | 257 |
| 323 | Natural selection | 2 | 55 | 231 | 257 |
| 323 | animals | 2 | 55 | 1940 | 1394 |
| 323 | genetic selection | 2 | 55 | 231 | 257 |
| 328 | Solitons | 1 | 54 | 2125 | 1367 |
| 328 | Fractals | 1 | 54 | 2413 | 1491 |
| 328 | Chaos | 1 | 54 | 2125 | 1367 |
| 328 | Steroids | 2 | 54 | 1486 | 1444 |
| 332 | Social behavior | 2 | 53 | 1656 | 1591 |
| 333 | Remote Sensing | 5 | 52 | 1401 | 1433 |
| 333 | Semiconductors | 2 | 52 | 2968 | 2405 |
| 333 | Microstructure | 2 | 52 | 1357 | 945 |
| 336 | Hospitals | 5 | 51 | 612 | 992 |
| 336 | Microscopy | 5 | 51 | 1610 | 1861 |
| 338 | Drug delivery systems | 3 | 50 | 1904 | 2419 |
| 338 | Biometrics | 7 | 50 | 843 | 1389 |
| 338 | DNA | 2 | 50 | 967 | 824 |
| 341 | Systems Theory | 7 | 49 | 350 | 515 |
| 341 | Clinical Biochemistry | 3 | 49 | 1721 | 1899 |
| 341 | energy conservation | 1 | 49 | 3706 | 3134 |
| 341 | Health promotion | 4 | 49 | 1601 | 2152 |
| 341 | Digestive system diseases | 1 | 49 | 1936 | 1506 |
| 346 | Anatomy | 3 | 48 | 2476 | 2743 |
| 346 | older people | 6 | 48 | 1390 | 1685 |
| 346 | musculoskeletal system | 2 | 48 | 208 | 239 |
| 346 | internet | 6 | 48 | 940 | 1408 |
| 350 | Microbial Genetics | 2 | 47 | 538 | 549 |
| 350 | phytopathogenic bacteria | 2 | 47 | 368 | 480 |
| 350 | Plant diseases | 2 | 47 | 2736 | 2357 |
| 353 | actuators | 2 | 46 | 3044 | 3370 |
| 353 | transducers | 2 | 46 | 3044 | 3370 |
| 355 | Nanobiotechnology | 1 | 45 | 969 | 921 |
| 355 | Food Microbiology | 3 | 45 | 1536 | 2386 |
| 355 | food technology | 3 | 45 | 3100 | 3742 |
| 355 | Plant breeding | 2 | 45 | 1253 | 1210 |
| 355 | Transgenic plants | 2 | 45 | 739 | 917 |
| 355 | Food | 3 | 45 | 3968 | 4689 |
| 355 | pain | 3 | 45 | 1763 | 2221 |
| 362 | Industrial Engineering | 3 | 44 | 2357 | 2624 |
| 362 | Fluid Mechanics | 1 | 44 | 3085 | 2130 |
| 362 | Radiobiology | 3 | 44 | 2141 | 2385 |
| 362 | infection | 2 | 44 | 2641 | 2772 |
| 362 | Biodiversity | 2 | 44 | 3360 | 3203 |
| 367 | Plant Biotechnology | 1 | 43 | 1642 | 1277 |
| 368 | Neurogenetics | 2 | 42 | 475 | 579 |
| 368 | Photogrammetry | 4 | 42 | 907 | 534 |
| 368 | Integrated Circuits | 6 | 42 | 591 | 549 |
| 368 | Liver diseases | 2 | 42 | 2120 | 2670 |
| 372 | Engineering Mathematics | 13 | 41 | 1477 | 2792 |
| 372 | Oxidative stress | 2 | 41 | 1727 | 2250 |
| 372 | particles | 2 | 41 | 1546 | 1513 |
| 375 | Agricultural Chemistry | 5 | 40 | 2298 | 3482 |
| 375 | Mobile genetic elements | 1 | 40 | 248 | 193 |
| 375 | Expert Systems | 6 | 40 | 59 | 276 |
| 375 | preventive medicine | 2 | 40 | 2078 | 2365 |
| 375 | Adolescent Psychology | 2 | 40 | 1239 | 1265 |
| 375 | nuclear magnetic resonance | 5 | 40 | 1050 | 1455 |
| 375 | Plant physiology | 2 | 40 | 2870 | 3270 |
| 375 | Magnetic Resonance Spectroscopy | 5 | 40 | 1183 | 1612 |
| 383 | marketing | 1 | 39 | 3217 | 2474 |
| 383 | Islam | 1 | 39 | 1277 | 401 |
| 383 | commerce | 1 | 39 | 3086 | 2033 |
| 386 | Depression | 1 | 38 | 795 | 924 |
| 386 | Oncogenes | 2 | 38 | 1700 | 2469 |
| 386 | Sexual health | 1 | 38 | 1568 | 1043 |
| 386 | Anxiety Disorders | 1 | 38 | 1054 | 1191 |
| 386 | Anxiety | 1 | 38 | 1058 | 1185 |
| 386 | Genetic regulation | 2 | 38 | 1798 | 2233 |
| 386 | arthritis | 3 | 38 | 1557 | 2425 |
| 386 | cloning | 2 | 38 | 1035 | 1542 |
| 394 | Crisis management | 1 | 37 | 419 | 244 |
| 394 | nanoscience | 4 | 37 | 3049 | 4335 |
| 396 | Plant Genetics | 1 | 36 | 1332 | 1316 |
| 396 | Solid State Physics | 5 | 36 | 3679 | 4589 |
| 396 | Nanostructured Materials | 5 | 36 | 3003 | 4392 |
| 396 | Cardiac electrophysiology | 1 | 36 | 530 | 495 |
| 396 | Electrophysiology | 1 | 36 | 2250 | 1695 |
| 396 | arrhythmia | 1 | 36 | 530 | 495 |
| 402 | Clinical Trials | 2 | 35 | 904 | 931 |
| 402 | Research Design | 2 | 35 | 1968 | 2148 |
| 402 | Neurons | 1 | 35 | 1201 | 1632 |
| 405 | Linguistics | 2 | 34 | 2184 | 1536 |
| 405 | Functional Genomics | 2 | 34 | 441 | 770 |
| 405 | Genetic Research | 1 | 34 | 447 | 306 |
| 408 | viruses | 1 | 33 | 2752 | 2965 |
| 409 | pain management | 1 | 32 | 1487 | 1160 |
| 409 | Muscles | 2 | 32 | 1329 | 1760 |
| 409 | Breeding | 1 | 32 | 2268 | 2001 |
| 412 | Health Services Administration | 2 | 31 | 1796 | 1991 |
| 412 | Psychoneuroimmunology | 2 | 31 | 999 | 1479 |
| 412 | Genetic disorders | 1 | 31 | 1061 | 1032 |
| 412 | Neuroimmunology | 2 | 31 | 1112 | 1629 |
| 412 | Radiation | 3 | 31 | 2793 | 3229 |
| 412 | Language and Logic | 7 | 31 | 31 | 95 |
| 412 | Respiratory system | 1 | 31 | 1247 | 1189 |
| 412 | scientific societies | 1 | 31 | 1759 | 1513 |
| 420 | Neuropsychology | 6 | 30 | 1995 | 3789 |
| 420 | Software Maintenance | 2 | 30 | 281 | 294 |
| 420 | Sustainable Engineering | 2 | 30 | 2394 | 2883 |
| 420 | Mathematical Physics | 4 | 30 | 3356 | 3493 |
| 420 | Cellular senescence | 1 | 30 | 1583 | 1758 |
| 420 | Solid State Chemistry | 3 | 30 | 2933 | 3444 |
| 420 | Hormones | 1 | 30 | 2537 | 2484 |
| 427 | Machine Learning | 2 | 29 | 585 | 640 |
| 427 | Molecular ecology | 2 | 29 | 1582 | 2376 |
| 427 | Documentation | 1 | 29 | 788 | 531 |
| 427 | disease outbreaks | 1 | 29 | 1215 | 1292 |
| 427 | Epidemics | 1 | 29 | 1140 | 1274 |
| 427 | biomedicine | 2 | 29 | 1437 | 1813 |
| 433 | Social Sciences | 3 | 28 | 4812 | 4480 |
| 433 | Geographic information systems | 2 | 28 | 1712 | 1606 |
| 433 | Visual Perception | 2 | 28 | 2745 | 3273 |
| 433 | Vision | 2 | 28 | 915 | 1271 |
| 433 | Memory | 1 | 28 | 3795 | 3586 |
| 433 | Attention | 1 | 28 | 3765 | 3414 |
| 433 | Perception | 1 | 28 | 3856 | 3509 |
| 440 | Speech-Language Pathology | 1 | 27 | 623 | 513 |
| 440 | Production Planning | 2 | 27 | 374 | 662 |
| 440 | Transportation | 3 | 27 | 1984 | 2546 |
| 440 | Production Control | 2 | 27 | 360 | 659 |
| 440 | automatic speech recognition | 1 | 27 | 363 | 341 |
| 440 | Scandinavia | 1 | 27 | 1501 | 1304 |
| 446 | Mechanical Engineering | 2 | 26 | 3646 | 3197 |
| 446 | Catalysis | 4 | 26 | 3514 | 5013 |
| 446 | Public Health Informatics | 4 | 26 | 84 | 56 |
| 446 | Digital electronics | 3 | 26 | 386 | 425 |
| 446 | Molecular Genetics | 1 | 26 | 3389 | 3675 |
| 446 | Population Genetics | 1 | 26 | 2300 | 2468 |
| 446 | epidemiologic methods | 1 | 26 | 419 | 302 |
| 446 | Communication in medicine | 1 | 26 | 1085 | 971 |
| 454 | Pathology | 5 | 25 | 2404 | 4577 |
| 454 | epilepsy | 2 | 25 | 1504 | 1892 |
| 454 | Animal husbandry | 1 | 25 | 756 | 564 |
| 454 | Child Development | 1 | 25 | 3667 | 3518 |
| 454 | Bioprinting | 1 | 25 | 115 | 124 |
| 454 | livestock | 1 | 25 | 1099 | 770 |
| 460 | Oceanography | 1 | 24 | 3127 | 2956 |
| 460 | Green Chemistry | 1 | 24 | 2875 | 3219 |
| 460 | Heat Exchangers | 1 | 24 | 2177 | 2405 |
| 460 | Database Security | 2 | 24 | 131 | 190 |
| 460 | alcoholism | 3 | 24 | 1794 | 2854 |
| 465 | Materials Science | 2 | 23 | 6361 | 6697 |
| 465 | Physical Therapy | 1 | 23 | 2699 | 2643 |
| 465 | Health Information Management | 1 | 23 | 713 | 1071 |
| 465 | Internet of Things | 2 | 23 | 970 | 1024 |
| 469 | Manufacturing Processes | 2 | 22 | 3230 | 3637 |
| 469 | Product Design | 2 | 22 | 765 | 850 |
| 469 | Production Engineering | 2 | 22 | 2845 | 3055 |
| 469 | Clinical Immunology | 3 | 22 | 1696 | 2598 |
| 469 | Clinical Pharmacology | 4 | 22 | 1665 | 2916 |
| 469 | Immunopathology | 3 | 22 | 1766 | 2797 |
| 469 | technology transfer | 1 | 22 | 644 | 664 |
| 469 | microwave antennas | 5 | 22 | 364 | 709 |
| 469 | Radio wave propagation | 6 | 22 | 643 | 1259 |
| 469 | Digital humanities | 2 | 22 | 131 | 208 |
| 469 | Social Change | 1 | 22 | 1965 | 2229 |
| 469 | Inflammation | 1 | 22 | 2547 | 2793 |
| 469 | Safety management | 2 | 22 | 1002 | 1076 |
| 469 | Chemical industry | 7 | 22 | 1066 | 2274 |
| 469 | Microwaves | 5 | 22 | 1050 | 1383 |
| 469 | Thorax | 1 | 22 | 988 | 1174 |
| 485 | Environmental Policy | 4 | 21 | 3563 | 6420 |
| 486 | Nursing | 1 | 20 | 3870 | 3032 |
| 486 | Proteomics | 3 | 20 | 1437 | 2671 |
| 486 | Vaccines | 2 | 20 | 2891 | 3884 |
| 489 | Aerospace Engineering | 1 | 19 | 942 | 645 |
| 489 | Intelligent Transportation Systems | 3 | 19 | 876 | 1335 |
| 489 | Environmental Toxicology | 2 | 19 | 3591 | 5137 |
| 489 | Signal Transduction | 1 | 19 | 2673 | 3029 |
| 489 | Statistical Mechanics | 1 | 19 | 2314 | 1635 |
| 489 | Genetic polymorphisms | 1 | 19 | 50 | 12 |
| 489 | Learning disabilities | 1 | 19 | 1535 | 1479 |
| 489 | Disability Law | 1 | 19 | 360 | 361 |
| 489 | Diagnostic microbiology | 1 | 19 | 2556 | 3304 |
| 489 | Randomized Controlled Trials | 2 | 19 | 1883 | 2255 |
| 489 | Formal Languages | 6 | 19 | 124 | 325 |
| 489 | Developmental Disabilities | 1 | 19 | 1921 | 2191 |
| 489 | Genetic markers | 1 | 19 | 691 | 747 |
| 489 | Intellectual disability | 1 | 19 | 1730 | 1617 |
| 503 | Economics | 2 | 18 | 5643 | 5471 |
| 503 | Financial Engineering | 1 | 18 | 542 | 536 |
| 503 | Music | 2 | 18 | 1411 | 1342 |
| 503 | Microcirculation | 2 | 18 | 723 | 1163 |
| 503 | Sarcopenia | 1 | 18 | 851 | 1094 |
| 503 | finance | 1 | 18 | 3893 | 3268 |
| 503 | liver | 1 | 18 | 743 | 750 |
| 510 | Embedded Systems | 1 | 17 | 419 | 404 |
| 510 | Combinatorial optimization | 1 | 17 | 1060 | 794 |
| 510 | phototherapy | 3 | 17 | 276 | 338 |
| 513 | Water quality management | 1 | 16 | 3560 | 3626 |
| 513 | Organometallic compounds | 2 | 16 | 1749 | 2283 |
| 513 | ethanol | 2 | 16 | 748 | 1236 |
| 513 | motor skills | 2 | 16 | 279 | 455 |
| 517 | Histology | 2 | 15 | 2761 | 4040 |
| 517 | Developmental Genetics | 1 | 15 | 1046 | 1431 |
| 517 | Semantics | 2 | 15 | 370 | 486 |
| 517 | Infections | 1 | 15 | 2471 | 3066 |
| 517 | voice | 1 | 15 | 1019 | 1011 |
| 517 | Peroxisomes | 1 | 15 | 227 | 381 |
| 517 | Bones | 2 | 15 | 1402 | 2094 |
| 524 | Building Materials | 1 | 14 | 2833 | 3250 |
| 524 | Energy Policy | 1 | 14 | 4730 | 5447 |
| 524 | Medical Oncology | 1 | 14 | 3735 | 3954 |
| 524 | Neurosurgery | 1 | 14 | 2295 | 2391 |
| 524 | Coastal zone management | 2 | 14 | 1011 | 1665 |
| 524 | Biomechanics | 4 | 14 | 1560 | 3108 |
| 524 | Neuromuscular diseases | 1 | 14 | 1353 | 1648 |
| 524 | Parasitology | 2 | 14 | 3446 | 4514 |
| 524 | clay | 1 | 14 | 1584 | 2067 |
| 524 | clay minerals | 1 | 14 | 618 | 820 |
| 524 | energy resources | 1 | 14 | 2533 | 3377 |
| 535 | Information Theory | 5 | 13 | 1159 | 2145 |
| 535 | Developing countries | 1 | 13 | 4935 | 4912 |
| 537 | Nuclear Engineering | 5 | 12 | 1200 | 2084 |
| 537 | Neuropsychiatry | 3 | 12 | 1110 | 2134 |
| 537 | Dietetics | 1 | 12 | 1746 | 1692 |
| 537 | Health Services Research | 2 | 12 | 2822 | 3956 |
| 537 | Neuroimaging | 3 | 12 | 347 | 734 |
| 537 | Number Theory | 3 | 12 | 1016 | 1221 |
| 537 | Operations Research | 1 | 12 | 3812 | 3776 |
| 537 | Nuclear Chemistry | 1 | 12 | 2164 | 2062 |
| 537 | Radiochemistry | 1 | 12 | 2081 | 1903 |
| 537 | Primary health care | 1 | 12 | 3902 | 4162 |
| 537 | Production Management | 1 | 12 | 1963 | 2491 |
| 548 | Neurochemistry | 2 | 11 | 3284 | 4873 |
| 548 | Educational Technology | 3 | 11 | 1814 | 3203 |
| 548 | Social Networks | 1 | 11 | 790 | 893 |
| 548 | Animal health | 1 | 11 | 968 | 938 |
| 548 | Online social networks | 1 | 11 | 781 | 876 |
| 548 | Blood vessels | 1 | 11 | 846 | 1107 |
| 548 | free radicals | 1 | 11 | 2718 | 3338 |
| 548 | Hippocampus | 1 | 11 | 616 | 961 |
| 548 | Oxidation-reduction | 1 | 11 | 1549 | 2237 |
| 557 | Nanochemistry | 1 | 10 | 2419 | 2660 |
| 557 | Developmental Psychology | 2 | 10 | 1409 | 2288 |
| 557 | Social Psychology | 3 | 10 | 2454 | 4417 |
| 557 | Evolutionary Genetics | 1 | 10 | 1561 | 2091 |
| 557 | Genetic epidemiology | 2 | 10 | 441 | 863 |
| 557 | Molecular Epidemiology | 1 | 10 | 1561 | 2091 |
| 557 | Soft Condensed Matter | 1 | 10 | 1943 | 2370 |
| 557 | sustainability | 4 | 10 | 767 | 2092 |
| 557 | Environmental risk assessment | 1 | 10 | 999 | 1244 |
| 557 | Parasites | 1 | 10 | 3053 | 3531 |
| 557 | heredity | 2 | 10 | 1051 | 1793 |
| 557 | Recombinant DNA | 1 | 10 | 3027 | 3678 |
| 557 | Interactive multimedia | 3 | 10 | 362 | 865 |
| 557 | biopolymers | 1 | 10 | 2174 | 2653 |
| 571 | Graph Theory | 2 | 9 | 1132 | 1245 |
| 571 | Animal Behavior | 1 | 9 | 3360 | 4229 |
| 571 | Quality Assurance | 1 | 9 | 980 | 1193 |
| 571 | Social Systems | 1 | 9 | 601 | 580 |
| 571 | optical instruments | 2 | 9 | 624 | 966 |
| 571 | optical phenomena | 2 | 9 | 200 | 418 |
| 571 | primary prevention | 2 | 9 | 641 | 1383 |
| 571 | chronic disease | 2 | 9 | 541 | 1097 |
| 571 | women | 1 | 9 | 1690 | 1674 |
| 571 | sexual behavior | 1 | 9 | 1340 | 1712 |
| 581 | Physical organic chemistry | 2 | 8 | 1928 | 2947 |
| 581 | Transnational corporations | 1 | 8 | 782 | 1068 |
| 581 | Access to Information | 1 | 8 | 446 | 738 |
| 581 | Logic Programming | 4 | 8 | 305 | 606 |
| 581 | big data | 1 | 8 | 1283 | 1479 |
| 581 | International Finance | 1 | 8 | 2680 | 2995 |
| 581 | Tropical Medicine | 1 | 8 | 3763 | 4452 |
| 581 | Product life cycle | 1 | 8 | 730 | 1053 |
| 581 | green products | 1 | 8 | 633 | 979 |
| 581 | drug addiction | 1 | 8 | 2196 | 2951 |
| 581 | Information dissemination | 1 | 8 | 446 | 738 |
| 592 | Psycholinguistics | 1 | 7 | 1716 | 2151 |
| 592 | behavioral medicine | 1 | 7 | 2750 | 3873 |
| 592 | Bipolar Disorder | 1 | 7 | 734 | 1095 |
| 592 | Respiratory Infections | 1 | 7 | 821 | 1165 |
| 592 | planning | 1 | 7 | 1614 | 1998 |
| 592 | Influenza | 1 | 7 | 678 | 1031 |
| 598 | Sociology | 1 | 6 | 6044 | 6780 |
| 598 | Food Science | 1 | 6 | 553 | 564 |
| 598 | Environmental Engineering | 1 | 6 | 7078 | 8363 |
| 598 | Database Management | 1 | 6 | 1488 | 1940 |
| 598 | Hydrology | 1 | 6 | 4563 | 5317 |
| 598 | Visual Communication | 1 | 6 | 1028 | 1244 |
| 598 | Cosmology | 1 | 6 | 2333 | 2337 |
| 598 | Optical Communications | 1 | 6 | 1275 | 1530 |
| 598 | Photonics | 2 | 6 | 2376 | 3718 |
| 598 | Risk Management | 1 | 6 | 1699 | 2288 |
| 598 | Environmental Chemistry | 1 | 6 | 4116 | 5235 |
| 598 | Virtual reality | 1 | 6 | 859 | 1078 |
| 598 | Water | 1 | 6 | 4455 | 5727 |
| 598 | environmental protection | 1 | 6 | 6538 | 7894 |
| 598 | nuclear astrophysics | 1 | 6 | 909 | 1081 |
| 598 | Lymphoma | 1 | 6 | 1366 | 1156 |
| 598 | Multiple Myeloma | 1 | 6 | 1354 | 1131 |
| 598 | Image enhancement | 1 | 6 | 733 | 1081 |
| 598 | Flood forecasting | 1 | 6 | 278 | 572 |
| 598 | Flood control | 1 | 6 | 687 | 978 |
| 598 | water supply | 1 | 6 | 1829 | 2508 |
| 598 | atmospheric models | 1 | 6 | 1227 | 1676 |
| 598 | multimedia | 2 | 6 | 290 | 607 |
| 598 | cell interaction | 1 | 6 | 2311 | 3166 |
| 598 | Endocrine system | 2 | 6 | 1316 | 1064 |
| 598 | Cell communication | 1 | 6 | 1687 | 2456 |
| 624 | Language Disorders | 1 | 5 | 1594 | 2061 |
| 624 | Experimental Design | 1 | 5 | 609 | 720 |
| 624 | General Surgery | 1 | 5 | 1563 | 1939 |
| 624 | Nuclear Fusion | 1 | 5 | 1130 | 1365 |
| 624 | Quality Control | 1 | 5 | 3694 | 4774 |
| 624 | Enteral nutrition | 2 | 5 | 1396 | 2558 |
| 624 | Parenteral nutrition | 2 | 5 | 1655 | 2967 |
| 624 | Speech Disorders | 1 | 5 | 1866 | 2418 |
| 624 | Cell cycle | 1 | 5 | 720 | 1126 |
| 624 | breastfeeding | 1 | 5 | 1182 | 1745 |
| 624 | visualization | 1 | 5 | 3684 | 2941 |
| 624 | cell proliferation | 1 | 5 | 799 | 1202 |
| 624 | Southeast Asia | 8 | 5 | 193 | 1071 |
| 624 | Hearing | 1 | 5 | 1301 | 1748 |
| 624 | Speech | 1 | 5 | 1664 | 2234 |
| 624 | fusion reactors | 1 | 5 | 871 | 1023 |
| 640 | Mathematical Linguistics | 1 | 4 | 62 | 51 |
| 640 | Electronic Packaging | 1 | 4 | 380 | 540 |
| 640 | Distributed Databases | 1 | 4 | 364 | 552 |
| 640 | Photochemistry | 1 | 4 | 3373 | 4569 |
| 640 | Reservoirs | 1 | 4 | 450 | 719 |
| 640 | Zeolites | 1 | 4 | 1709 | 2491 |
| 640 | lakes | 1 | 4 | 215 | 392 |
| 640 | Light | 1 | 4 | 1935 | 2834 |
| 640 | Parkinson's disease | 3 | 4 | 307 | 854 |
| 640 | technical education | 1 | 4 | 1044 | 1418 |
| 640 | Australia | 1 | 4 | 4103 | 5160 |
| 651 | Zoology | 1 | 3 | 4465 | 5542 |
| 651 | Musicology | 1 | 3 | 511 | 574 |
| 651 | Sustainable Development | 2 | 3 | 3265 | 5586 |
| 651 | Nuclear Energy | 1 | 3 | 2265 | 2625 |
| 651 | Cardiovascular Pharmacology | 1 | 3 | 680 | 1164 |
| 651 | Economic History | 1 | 3 | 6411 | 6925 |
| 651 | Human Geography | 1 | 3 | 2118 | 2691 |
| 651 | Economic Development | 1 | 3 | 3354 | 4285 |
| 651 | Nonverbal Communication | 1 | 3 | 416 | 721 |
| 651 | Quantum Chemistry | 1 | 3 | 1746 | 2213 |
| 651 | Patient education | 2 | 3 | 946 | 2150 |
| 651 | Popular culture | 1 | 3 | 1041 | 990 |
| 651 | Body language | 1 | 3 | 256 | 512 |
| 651 | Animal ecology | 1 | 3 | 2123 | 2893 |
| 651 | Mass Media | 1 | 3 | 1852 | 1841 |
| 651 | Neuropharmacology | 1 | 3 | 1246 | 1807 |
| 651 | Wildlife management | 1 | 3 | 1190 | 1675 |
| 651 | Luminescence | 1 | 3 | 2433 | 3252 |
| 651 | Chemical analysis | 1 | 3 | 2275 | 3319 |
| 651 | counseling | 2 | 3 | 1961 | 3715 |
| 651 | bioluminescence | 1 | 3 | 837 | 1288 |
| 651 | Library Science | 1 | 3 | 2648 | 2795 |
| 651 | Africa | 1 | 3 | 3374 | 4194 |
| 651 | System design | 1 | 3 | 642 | 944 |
| 651 | Earth Sciences | 1 | 3 | 5615 | 6890 |
| 651 | Tunneling | 1 | 3 | 651 | 1036 |
| 651 | underground construction | 1 | 3 | 651 | 1036 |
| 651 | Culture | 1 | 3 | 2124 | 2592 |
| 651 | mathematical concepts | 3 | 3 | 444 | 1343 |
| 651 | Liquid chromatography | 2 | 3 | 836 | 1723 |
| 681 | Dermatology | 1 | 2 | 3307 | 4291 |
| 681 | Energy Conversion | 2 | 2 | 1717 | 2838 |
| 681 | Energy Storage | 2 | 2 | 1854 | 2983 |
| 681 | Periglacial processes | 1 | 2 | 285 | 522 |
| 681 | Nonlinear Dynamics | 1 | 2 | 3501 | 4586 |
| 681 | healthcare disparities | 1 | 2 | 1135 | 1876 |
| 681 | Quantum Gravity | 1 | 2 | 2804 | 3355 |
| 681 | fuel cells | 2 | 2 | 1796 | 2941 |
| 681 | Molecules | 1 | 2 | 2709 | 3490 |
| 681 | Permafrost | 1 | 2 | 285 | 522 |
| 681 | Frozen ground | 1 | 2 | 290 | 525 |
| 681 | radar | 1 | 2 | 491 | 845 |
| 681 | Sonar | 1 | 2 | 431 | 743 |
| 681 | Population | 1 | 2 | 2259 | 3108 |
| 681 | Navigation | 1 | 2 | 902 | 1330 |
| 696 | Geography | 1 | 1 | 4347 | 5760 |
| 696 | Stochastic Processes | 1 | 1 | 1828 | 2591 |
| 696 | Mental Health | 1 | 1 | 3470 | 5141 |
| 696 | Organizational learning | 1 | 1 | 1321 | 2054 |
| 696 | Long-Term Care | 1 | 1 | 1142 | 1877 |
| 696 | Long-term care facilities | 1 | 1 | 1132 | 1854 |
| 696 | Renewable Energy Sources | 1 | 1 | 4672 | 6505 |
| 696 | bioclimatology | 1 | 1 | 2018 | 2990 |
| 696 | Human Capital | 1 | 1 | 600 | 1064 |
| 696 | Composite Materials | 1 | 1 | 4399 | 5818 |
| 696 | Mental Health Services | 1 | 1 | 2680 | 4077 |
| 696 | Risk | 1 | 1 | 1226 | 2019 |
| 696 | Competency-Based Education | 1 | 1 | 24 | 79 |
| 696 | Plastics | 1 | 1 | 3230 | 4360 |
| 696 | hazard mitigation | 3 | 1 | 1192 | 3129 |
| 696 | carcinogens | 1 | 1 | 2051 | 3176 |
| 696 | biological agents | 1 | 1 | 1459 | 2003 |
| 696 | Uncertainty | 1 | 1 | 402 | 667 |
| 696 | natural disasters | 3 | 1 | 1635 | 3846 |
| 696 | diseases | 1 | 1 | 827 | 1562 |
| 696 | Disease | 1 | 1 | 839 | 1627 |
| 717 | Humanities | 1 | 0 | 4163 | 5449 |
| 717 | Optics | 1 | 0 | 7927 | 9645 |
| 717 | Econometrics | 1 | 0 | 2396 | 3378 |
| 717 | Pharmaceutical Technology | 1 | 0 | 2840 | 4211 |
| 717 | Oral Medicine | 1 | 0 | 1423 | 2102 |
| 717 | Aerodynamics | 1 | 0 | 319 | 537 |
| 717 | Atmospheric Chemistry | 1 | 0 | 1618 | 2413 |
| 717 | Atmospheric Physics | 1 | 0 | 2825 | 4034 |
| 717 | Radiation Protection | 1 | 0 | 1536 | 2296 |
| 717 | Organizational change | 1 | 0 | 1472 | 2541 |
| 717 | Child | 2 | 0 | 3853 | 7025 |
| 717 | radiation monitoring | 1 | 0 | 1386 | 2132 |
| 717 | Underwater acoustics | 1 | 0 | 184 | 344 |
| 717 | Quantum Communication | 1 | 0 | 463 | 727 |
| 717 | Neurotransmitters | 1 | 0 | 1110 | 1400 |
| 717 | Integrative Medicine | 1 | 0 | 693 | 1360 |
| 717 | Immunochemistry | 1 | 0 | 2169 | 3261 |
| 717 | Technological Innovations | 1 | 0 | 2156 | 3568 |
| 717 | Coding Theory | 1 | 0 | 697 | 1035 |
| 717 | mass transfer | 1 | 0 | 2880 | 4015 |
| 717 | Entropy | 1 | 0 | 2289 | 3470 |
| 717 | Causality | 1 | 0 | 46 | 146 |
| 717 | Causation | 1 | 0 | 46 | 146 |
| 717 | Teaching | 1 | 0 | 3489 | 5191 |
| 717 | Eastern Europe | 1 | 0 | 2072 | 3004 |
| 717 | Brain | 1 | 0 | 4491 | 6153 |
| 717 | Adolescent | 2 | 0 | 3363 | 6342 |
| 717 | construction industry | 1 | 0 | 339 | 681 |
| 717 | corporate culture | 1 | 0 | 429 | 873 |
| 717 | human development | 1 | 0 | 1417 | 2390 |
| 717 | Radiation dosimetry | 1 | 0 | 1127 | 1801 |
| 717 | information | 1 | 0 | 139 | 345 |
| 717 | weight loss | 2 | 0 | 230 | 745 |
| 717 | Classroom Environment | 1 | 0 | 165 | 416 |
| 717 | Quantum theory | 1 | 0 | 1823 | 2544 |
| 717 | Iraq | 1 | 0 | 114 | 163 |
| 717 | Consciousness | 1 | 0 | 947 | 1533 |
