| 1 | Biology | 342 | 36.2K | 964 | 773 |
| 2 | Science | 273 | 33.1K | 1197 | 860 |
| 3 | Physics | 338 | 31.9K | 1199 | 951 |
| 4 | Chemistry | 291 | 20.9K | 1311 | 895 |
| 5 | Geophysics | 393 | 20.7K | 299 | 215 |
| 6 | Natural history | 65 | 18.9K | 851 | 739 |
| 7 | Cytology | 218 | 18.7K | 487 | 455 |
| 8 | Atmospheric Physics | 280 | 14.5K | 87 | 91 |
| 9 | Medical Oncology | 179 | 14.4K | 184 | 62 |
| 10 | Astrophysics | 292 | 14.2K | 520 | 594 |
| 11 | Radiobiology | 183 | 14.2K | 155 | 51 |
| 12 | Molecular Biology | 213 | 13.5K | 1181 | 997 |
| 13 | Meteorology | 271 | 12.6K | 152 | 168 |
| 14 | Spectrum analysis | 216 | 11.8K | 507 | 484 |
| 15 | Cell Biology | 113 | 10.8K | 745 | 670 |
| 16 | Medicine | 135 | 10.0K | 2197 | 1484 |
| 17 | Catalysis | 128 | 9.2K | 614 | 405 |
| 18 | Nanotechnology | 93 | 8.9K | 1072 | 633 |
| 19 | Atmospheric Chemistry | 130 | 8.7K | 117 | 115 |
| 20 | Biochemistry | 169 | 8.3K | 1828 | 1490 |
| 21 | Climatology | 153 | 8.1K | 154 | 164 |
| 22 | Plant cells | 64 | 8.0K | 213 | 195 |
| 23 | Virology | 64 | 7.6K | 783 | 670 |
| 24 | Planets | 111 | 7.2K | 285 | 218 |
| 25 | Materials | 79 | 6.6K | 1640 | 935 |
| 26 | Biophysics | 130 | 5.7K | 1108 | 840 |
| 27 | Biomechanics | 81 | 5.2K | 120 | 85 |
| 28 | atmospheric models | 95 | 5.1K | 55 | 76 |
| 29 | Chemical Engineering | 69 | 4.7K | 1151 | 772 |
| 30 | Botany | 105 | 4.7K | 766 | 721 |
| 31 | Metabolism | 45 | 4.7K | 950 | 579 |
| 32 | Bones | 40 | 4.6K | 181 | 43 |
| 33 | plant molecular biology | 66 | 4.5K | 254 | 299 |
| 34 | Plants | 76 | 4.0K | 303 | 344 |
| 35 | nanoscience | 38 | 3.9K | 872 | 514 |
| 36 | Astronomy | 130 | 3.8K | 701 | 875 |
| 37 | Environmental Health | 54 | 3.8K | 1399 | 987 |
| 38 | Biotechnology | 69 | 3.6K | 1540 | 1390 |
| 39 | Medical Physics | 78 | 3.5K | 287 | 183 |
| 40 | Nanostructured Materials | 47 | 3.4K | 961 | 537 |
| 41 | proteins | 130 | 3.4K | 127 | 240 |
| 42 | Bioengineering | 52 | 3.3K | 1122 | 1000 |
| 43 | Biomedical Engineering | 54 | 3.2K | 1244 | 745 |
| 44 | Nuclear Physics | 167 | 3.2K | 956 | 1107 |
| 45 | Earth Sciences | 48 | 3.0K | 887 | 539 |
| 46 | Molecular structure | 30 | 2.9K | 716 | 320 |
| 47 | Plant physiology | 43 | 2.8K | 536 | 445 |
| 48 | Microbiology | 47 | 2.7K | 2378 | 2087 |
| 49 | Biochemical Engineering | 38 | 2.7K | 947 | 1010 |
| 50 | Optical materials | 31 | 2.6K | 899 | 543 |
| 51 | Cancer | 35 | 2.5K | 1477 | 1125 |
| 52 | Genetics | 56 | 2.5K | 1069 | 1278 |
| 53 | Biocompatible Materials | 52 | 2.4K | 1094 | 1126 |
| 54 | Research | 92 | 2.2K | 2204 | 2623 |
| 55 | protein | 95 | 2.1K | 82 | 214 |
| 56 | Orthopedics | 72 | 2.1K | 244 | 259 |
| 57 | Pollution | 38 | 2.1K | 1916 | 1796 |
| 58 | Ecology | 34 | 2.0K | 2512 | 2200 |
| 59 | Environment | 27 | 2.0K | 2093 | 1955 |
| 60 | Carbon | 25 | 1.9K | 391 | 270 |
| 61 | Bacteriology | 24 | 1.9K | 768 | 585 |
| 62 | Environmental Engineering | 19 | 1.8K | 1777 | 955 |
| 63 | Materials Science | 33 | 1.8K | 1907 | 1414 |
| 64 | Agriculture | 19 | 1.7K | 967 | 379 |
| 65 | Human genetics | 9 | 1.7K | 1826 | 1766 |
| 66 | Climate | 17 | 1.7K | 145 | 64 |
| 67 | air | 16 | 1.7K | 54 | 39 |
| 68 | miniaturization | 14 | 1.7K | 948 | 595 |
| 69 | Microelectronics | 13 | 1.7K | 1043 | 535 |
| 70 | fuel cells | 11 | 1.6K | 735 | 357 |
| 71 | Plant Genetics | 25 | 1.6K | 157 | 165 |
| 72 | Energy Conversion | 11 | 1.6K | 694 | 480 |
| 73 | Computational Biology | 45 | 1.5K | 626 | 781 |
| 74 | Genomics | 62 | 1.5K | 651 | 928 |
| 75 | Crystallography | 49 | 1.5K | 326 | 182 |
| 76 | Statistical physics | 56 | 1.5K | 1124 | 1088 |
| 77 | Bioinformatics | 46 | 1.4K | 428 | 653 |
| 78 | Developmental Biology | 27 | 1.4K | 812 | 861 |
| 79 | Quantum Gravity | 66 | 1.4K | 699 | 809 |
| 80 | Analytical Chemistry | 30 | 1.4K | 1906 | 1468 |
| 81 | Immunity | 19 | 1.3K | 960 | 1149 |
| 82 | Surgery | 19 | 1.3K | 1097 | 1037 |
| 83 | carbon monoxide | 17 | 1.2K | 28 | 16 |
| 84 | X-ray crystallography | 46 | 1.2K | 67 | 71 |
| 85 | arthritis | 8 | 1.2K | 1054 | 576 |
| 86 | Geology | 12 | 1.2K | 1994 | 979 |
| 87 | environmental protection | 7 | 1.2K | 2916 | 1074 |
| 88 | nucleic acids | 22 | 1.1K | 756 | 934 |
| 89 | Hematology | 21 | 1.0K | 1985 | 1444 |
| 90 | Environmental Chemistry | 4 | 1.0K | 2315 | 849 |
| 91 | Plant Ecology | 14 | 1.0K | 914 | 666 |
| 92 | Environmental monitoring | 16 | 987 | 2080 | 1557 |
| 93 | Genetic engineering | 17 | 976 | 1028 | 826 |
| 94 | Medical genetics | 14 | 957 | 1942 | 1718 |
| 95 | China | 53 | 941 | 552 | 620 |
| 96 | Nonlinear Dynamics | 27 | 933 | 883 | 755 |
| 97 | Economics | 12 | 868 | 2745 | 1311 |
| 98 | Immunology | 17 | 867 | 2322 | 2147 |
| 99 | genome | 19 | 866 | 663 | 921 |
| 100 | Radiation | 28 | 865 | 683 | 537 |
| 101 | Green Chemistry | 18 | 858 | 737 | 788 |
| 102 | gene mapping | 23 | 857 | 787 | 955 |
| 103 | atmosphere | 26 | 854 | 161 | 155 |
| 104 | Orthopedic Surgery | 27 | 833 | 200 | 203 |
| 105 | Hydrology | 26 | 824 | 934 | 890 |
| 106 | Industrial Engineering | 28 | 814 | 527 | 507 |
| 107 | Electrochemistry | 25 | 786 | 1825 | 1519 |
| 108 | viruses | 19 | 782 | 723 | 880 |
| 109 | Pharmacology | 24 | 776 | 2729 | 2741 |
| 110 | Neurology | 18 | 766 | 3191 | 3046 |
| 111 | Environmental Management | 14 | 761 | 1512 | 1351 |
| 112 | Sustainable Engineering | 15 | 754 | 717 | 609 |
| 113 | Plant genetic engineering | 15 | 749 | 386 | 372 |
| 114 | Neurons | 9 | 728 | 487 | 830 |
| 115 | Biomolecules | 2 | 726 | 695 | 149 |
| 115 | Structure-activity relationship | 2 | 726 | 667 | 87 |
| 117 | sanitation | 10 | 725 | 1005 | 998 |
| 118 | Environmental Policy | 9 | 718 | 2243 | 1638 |
| 119 | environmental pollution | 23 | 717 | 2004 | 2307 |
| 120 | Urology | 19 | 703 | 1052 | 926 |
| 121 | Physiology | 18 | 688 | 2375 | 2245 |
| 122 | Medical Microbiology | 2 | 667 | 3611 | 1454 |
| 123 | Metastasis | 2 | 647 | 297 | 87 |
| 124 | Allergy | 5 | 642 | 1308 | 974 |
| 125 | Solar Energy | 20 | 634 | 530 | 666 |
| 126 | Climate change | 4 | 628 | 1090 | 1023 |
| 126 | Biodiversity conservation | 4 | 628 | 1812 | 1217 |
| 126 | Eutrophication | 4 | 628 | 1055 | 1017 |
| 129 | Marine Meteorology | 38 | 616 | 91 | 188 |
| 130 | Environmental Microbiology | 6 | 612 | 1139 | 754 |
| 131 | Plant Biotechnology | 12 | 581 | 353 | 288 |
| 132 | Chromosome mapping | 20 | 578 | 778 | 1018 |
| 133 | Artificial Intelligence | 4 | 566 | 3913 | 1567 |
| 133 | Host-parasite interactions | 11 | 566 | 769 | 1016 |
| 135 | Automation | 3 | 564 | 2151 | 701 |
| 136 | Environmental Law | 2 | 552 | 1710 | 748 |
| 137 | cell physiology | 16 | 545 | 756 | 1025 |
| 138 | Mental Disorders | 9 | 544 | 2384 | 1907 |
| 139 | Energy Storage | 8 | 542 | 844 | 544 |
| 140 | Anatomy | 13 | 538 | 1192 | 1047 |
| 141 | Cell differentiation | 12 | 534 | 1145 | 1346 |
| 142 | Crystallization | 32 | 533 | 60 | 99 |
| 143 | Mental illness | 8 | 527 | 1645 | 1359 |
| 144 | Clinical Chemistry | 15 | 523 | 1742 | 1763 |
| 145 | Pharmaceutical Chemistry | 18 | 504 | 2148 | 2370 |
| 146 | environmental indicators | 5 | 502 | 995 | 481 |
| 146 | Geobiology | 3 | 502 | 567 | 169 |
| 148 | Radiology | 14 | 499 | 927 | 562 |
| 149 | Microscopy | 4 | 497 | 1820 | 510 |
| 150 | Molecular cloning | 6 | 475 | 1276 | 644 |
| 150 | Genetic recombination | 6 | 475 | 1254 | 636 |
| 150 | Recombinant DNA | 6 | 475 | 1369 | 703 |
| 153 | radiative transfer | 16 | 468 | 236 | 202 |
| 154 | weather forecasting | 10 | 466 | 93 | 75 |
| 155 | energy conservation | 8 | 461 | 1307 | 1093 |
| 156 | Cytogenetics | 5 | 459 | 1637 | 1259 |
| 157 | Geomorphology | 5 | 450 | 1240 | 783 |
| 158 | soil microbiology | 2 | 448 | 2106 | 1087 |
| 159 | Virulence | 9 | 447 | 812 | 1071 |
| 160 | United States | 18 | 439 | 2720 | 2594 |
| 161 | Psychiatry | 9 | 432 | 3475 | 2906 |
| 162 | Microbial Ecology | 8 | 429 | 1766 | 1825 |
| 163 | Embryology | 8 | 423 | 1267 | 1244 |
| 163 | Geochemical Modeling | 15 | 423 | 110 | 167 |
| 163 | geological modeling | 15 | 423 | 147 | 189 |
| 166 | Oceanography | 21 | 422 | 859 | 1099 |
| 167 | Oncogenes | 5 | 420 | 1206 | 1138 |
| 168 | Signal Transduction | 12 | 418 | 777 | 1022 |
| 169 | Microorganisms | 1 | 410 | 2340 | 901 |
| 170 | Soil Science | 6 | 406 | 1565 | 1051 |
| 171 | Sports Medicine | 20 | 404 | 1190 | 1239 |
| 172 | Water | 6 | 398 | 2130 | 1846 |
| 173 | bioclimatology | 11 | 392 | 384 | 320 |
| 174 | Renewable Energy Sources | 4 | 389 | 2696 | 2158 |
| 175 | Genetic regulation | 9 | 366 | 793 | 973 |
| 176 | Optics | 20 | 363 | 2531 | 2254 |
| 177 | Environmental Geology | 6 | 358 | 1267 | 797 |
| 177 | cryosphere | 11 | 358 | 219 | 259 |
| 179 | Ecological Engineering | 3 | 356 | 766 | 321 |
| 179 | Industrial Microbiology | 6 | 356 | 1640 | 1332 |
| 181 | Energy Harvesting | 3 | 338 | 512 | 435 |
| 182 | Mechanical Engineering | 5 | 337 | 2398 | 948 |
| 183 | soil conservation | 4 | 336 | 752 | 347 |
| 183 | Gene expression regulation | 6 | 336 | 858 | 740 |
| 185 | impact | 3 | 334 | 371 | 190 |
| 186 | Histology | 11 | 326 | 1196 | 1330 |
| 187 | Toxicology | 14 | 323 | 3029 | 3601 |
| 187 | Remote Sensing | 14 | 323 | 650 | 486 |
| 189 | Mathematical Physics | 19 | 317 | 1514 | 1450 |
| 190 | biocatalysis | 1 | 309 | 381 | 305 |
| 190 | Homogeneous catalysis | 1 | 309 | 381 | 305 |
| 190 | Heterogeneous catalysis | 1 | 309 | 381 | 305 |
| 193 | Hydrometeorology | 9 | 306 | 120 | 199 |
| 194 | Rheumatology | 6 | 303 | 1166 | 1021 |
| 194 | Technology | 14 | 303 | 2474 | 2484 |
| 196 | Polymers | 6 | 296 | 4056 | 2948 |
| 197 | Growth | 7 | 294 | 983 | 1222 |
| 198 | Developmental Genetics | 3 | 290 | 701 | 667 |
| 198 | viral genetics | 3 | 290 | 427 | 534 |
| 200 | Nanoparticles | 12 | 289 | 1025 | 1283 |
| 201 | Proteome | 9 | 285 | 808 | 1003 |
| 202 | natural disasters | 6 | 284 | 977 | 744 |
| 203 | DNA polymerases | 3 | 279 | 558 | 706 |
| 204 | Emerging infectious diseases | 6 | 271 | 198 | 150 |
| 205 | biological factors | 14 | 267 | 927 | 1256 |
| 206 | hazard mitigation | 4 | 262 | 886 | 494 |
| 207 | Horticulture | 10 | 260 | 426 | 325 |
| 207 | Bioorganic chemistry | 10 | 260 | 1998 | 2201 |
| 209 | Food | 8 | 259 | 2427 | 2367 |
| 210 | Synthetic biology | 4 | 257 | 296 | 169 |
| 211 | Brain | 4 | 256 | 2906 | 2236 |
| 212 | calcification | 6 | 253 | 432 | 429 |
| 213 | Zeolites | 9 | 251 | 510 | 657 |
| 214 | transport vesicles | 2 | 249 | 373 | 458 |
| 215 | Public Health | 12 | 247 | 4009 | 4774 |
| 215 | Surface Chemistry | 7 | 247 | 3099 | 2879 |
| 217 | Condensed Matter | 25 | 245 | 1750 | 2320 |
| 218 | Health | 4 | 241 | 2640 | 1655 |
| 219 | soil pollution | 2 | 234 | 851 | 239 |
| 220 | Water pollution | 4 | 232 | 2832 | 2409 |
| 221 | Colloids | 7 | 231 | 3011 | 3087 |
| 222 | free radicals | 6 | 230 | 1336 | 1464 |
| 223 | Metabolic diseases | 4 | 229 | 2768 | 2540 |
| 224 | Magnetic Materials | 8 | 227 | 1065 | 1047 |
| 225 | Statistics | 9 | 226 | 1969 | 1649 |
| 225 | Developing countries | 5 | 226 | 2290 | 1595 |
| 227 | Conservation Biology | 1 | 222 | 2256 | 1000 |
| 228 | health services | 1 | 220 | 2434 | 651 |
| 228 | Breeding | 6 | 220 | 1015 | 932 |
| 230 | Soil ecology | 6 | 219 | 595 | 651 |
| 231 | Cosmology | 20 | 218 | 599 | 742 |
| 232 | Community Psychiatry | 3 | 215 | 1305 | 849 |
| 232 | Mental Health Services | 3 | 215 | 1668 | 831 |
| 232 | Psychiatric hospitals | 3 | 215 | 412 | 205 |
| 235 | Agricultural Chemistry | 5 | 213 | 2273 | 1886 |
| 235 | Bone diseases | 4 | 213 | 486 | 542 |
| 237 | Molecular Pharmacology | 1 | 211 | 1591 | 770 |
| 237 | Mass Spectrometry | 5 | 211 | 1210 | 920 |
| 239 | Proteomics | 10 | 210 | 659 | 1096 |
| 239 | Parasitology | 5 | 210 | 2404 | 1776 |
| 239 | Parasitic Diseases | 5 | 210 | 2119 | 1809 |
| 239 | disease vectors | 5 | 210 | 875 | 713 |
| 239 | Parasites | 5 | 210 | 1560 | 1110 |
| 244 | Physical Geography | 3 | 207 | 657 | 283 |
| 244 | Cell death | 6 | 207 | 1108 | 1401 |
| 246 | Structural optimization | 8 | 205 | 199 | 240 |
| 247 | Organic Chemistry | 7 | 204 | 2695 | 2540 |
| 247 | Solid State Physics | 13 | 204 | 2523 | 2709 |
| 247 | rehabilitation | 5 | 204 | 2197 | 1776 |
| 250 | Geography | 3 | 202 | 2823 | 1680 |
| 250 | mass transfer | 7 | 202 | 1259 | 1285 |
| 250 | enzymes | 9 | 202 | 1031 | 1340 |
| 253 | Photonics | 3 | 201 | 2015 | 1560 |
| 254 | Neurophysiology | 8 | 199 | 2369 | 2875 |
| 255 | Electronics | 7 | 198 | 2978 | 2237 |
| 256 | food technology | 5 | 192 | 2411 | 2207 |
| 257 | Cell metabolism | 2 | 190 | 1133 | 1193 |
| 258 | Air Conditioning | 3 | 189 | 206 | 56 |
| 258 | Ventilation | 3 | 189 | 619 | 334 |
| 258 | heating | 3 | 189 | 153 | 52 |
| 261 | economic policy | 6 | 180 | 2149 | 1351 |
| 262 | medical education | 2 | 179 | 3103 | 1386 |
| 263 | Otolaryngology | 8 | 177 | 432 | 485 |
| 263 | Land use | 4 | 177 | 1143 | 968 |
| 263 | Radioisotopes | 3 | 177 | 1589 | 694 |
| 266 | Physical Chemistry | 6 | 175 | 2012 | 1976 |
| 267 | Homeostasis | 1 | 174 | 1016 | 1149 |
| 268 | locomotion | 5 | 169 | 628 | 577 |
| 268 | posture | 5 | 169 | 628 | 577 |
| 268 | clay | 4 | 169 | 755 | 777 |
| 268 | water supply | 4 | 169 | 952 | 927 |
| 268 | gait | 5 | 169 | 628 | 577 |
| 268 | walking | 5 | 169 | 628 | 577 |
| 274 | Nuclear Medicine | 4 | 164 | 1220 | 971 |
| 275 | Oncology | 11 | 162 | 1486 | 2989 |
| 275 | Pediatrics | 3 | 162 | 3419 | 2939 |
| 275 | Eastern Europe | 2 | 162 | 1487 | 311 |
| 278 | Microbial Biotechnology | 4 | 161 | 962 | 776 |
| 279 | Radiation effects | 4 | 160 | 589 | 593 |
| 280 | artificial cells | 10 | 158 | 24 | 25 |
| 281 | sports injuries | 12 | 157 | 200 | 305 |
| 282 | Plant tissue culture | 3 | 156 | 850 | 629 |
| 282 | Plant cell culture | 3 | 156 | 762 | 621 |
| 284 | Endocrinology | 4 | 153 | 3555 | 3532 |
| 284 | Spine | 3 | 153 | 927 | 855 |
| 286 | Geographic information systems | 5 | 151 | 933 | 632 |
| 287 | Vaccines | 5 | 150 | 1866 | 1892 |
| 288 | Psychology | 2 | 149 | 7311 | 4556 |
| 289 | Social Sciences | 2 | 148 | 5522 | 2352 |
| 289 | drug development | 3 | 148 | 1376 | 1766 |
| 291 | Food additives | 5 | 141 | 1081 | 1286 |
| 292 | Geodesy | 8 | 137 | 413 | 577 |
| 293 | Marine Biology | 4 | 133 | 2707 | 2546 |
| 293 | Solitons | 2 | 133 | 1488 | 845 |
| 293 | Fractals | 2 | 133 | 1719 | 931 |
| 293 | Chaos | 2 | 133 | 1488 | 845 |
| 297 | Labor Economics | 1 | 131 | 992 | 418 |
| 297 | nuclear magnetic resonance spectroscopy | 8 | 131 | 534 | 577 |
| 297 | labor | 1 | 131 | 799 | 230 |
| 297 | drug therapy | 4 | 131 | 2780 | 2689 |
| 297 | working class | 1 | 131 | 467 | 220 |
| 302 | Mathematics | 9 | 130 | 4673 | 4185 |
| 302 | mycoses | 3 | 130 | 1098 | 1290 |
| 302 | Bacterial infections | 3 | 130 | 1164 | 1324 |
| 305 | Health Policy | 6 | 128 | 2161 | 2425 |
| 306 | Psychophysiology | 5 | 127 | 2879 | 3250 |
| 307 | Immunotherapy | 5 | 126 | 1893 | 2394 |
| 308 | Obstetrics | 5 | 124 | 2710 | 2636 |
| 308 | Biometrics | 11 | 124 | 663 | 1025 |
| 310 | Luminescence | 13 | 123 | 581 | 1018 |
| 311 | Diagnostic Imaging | 3 | 121 | 2684 | 2069 |
| 312 | Health Education | 3 | 120 | 2525 | 1843 |
| 312 | Image Processing | 3 | 120 | 2380 | 1972 |
| 312 | nuclear magnetic resonance | 7 | 120 | 918 | 986 |
| 312 | Industrial Policy | 4 | 120 | 473 | 454 |
| 316 | Agricultural Ecology | 1 | 119 | 2280 | 1501 |
| 317 | Behavior | 4 | 118 | 3572 | 4055 |
| 318 | Catalyst | 3 | 116 | 28 | 92 |
| 318 | Catalysts | 3 | 116 | 786 | 605 |
| 320 | global environmental change | 4 | 114 | 885 | 1186 |
| 321 | Molecular evolution | 2 | 113 | 2667 | 2130 |
| 321 | blood substitutes | 6 | 113 | 34 | 35 |
| 321 | plant communities | 5 | 113 | 993 | 1397 |
| 324 | Engineering | 7 | 112 | 3839 | 3762 |
| 325 | Computer Vision | 2 | 109 | 1675 | 1425 |
| 325 | Geochemistry | 7 | 109 | 1652 | 2242 |
| 325 | Electrophoresis | 3 | 109 | 2092 | 1812 |
| 325 | Medical innovations | 1 | 109 | 2251 | 2109 |
| 329 | Systems Biology | 7 | 108 | 1264 | 1871 |
| 330 | Composite Materials | 5 | 107 | 2501 | 3037 |
| 330 | Evolution | 1 | 107 | 3611 | 2368 |
| 332 | Crystal growth | 5 | 106 | 924 | 1086 |
| 333 | Clinical Biochemistry | 4 | 105 | 1525 | 1495 |
| 333 | Chromatography | 2 | 105 | 2474 | 1652 |
| 333 | musculoskeletal system | 1 | 105 | 353 | 169 |
| 333 | Chromatographic analysis | 2 | 105 | 2860 | 1819 |
| 337 | Energy Policy | 3 | 104 | 3038 | 3424 |
| 338 | Ocean-atmosphere interaction | 9 | 103 | 41 | 35 |
| 338 | Therapeutics | 3 | 103 | 2384 | 2505 |
| 340 | Dynamics | 3 | 102 | 2155 | 1376 |
| 340 | land degradation | 2 | 102 | 741 | 592 |
| 340 | degradation | 2 | 102 | 741 | 592 |
| 343 | Fluid Dynamics | 2 | 101 | 1678 | 1144 |
| 344 | environmental exposure | 3 | 98 | 2457 | 2424 |
| 345 | Stem cells | 7 | 96 | 1413 | 2187 |
| 346 | Process Control | 1 | 95 | 1630 | 1318 |
| 346 | Computer-Aided Design | 2 | 95 | 1818 | 1212 |
| 346 | Chemical analysis | 3 | 95 | 1491 | 1404 |
| 349 | Nutrition | 6 | 93 | 4204 | 5411 |
| 350 | Medical Laboratory Science | 2 | 92 | 3180 | 2814 |
| 351 | Neuropsychiatry | 1 | 91 | 1821 | 1220 |
| 351 | Biomass Energy | 2 | 91 | 3418 | 3265 |
| 351 | Combustion | 2 | 91 | 1718 | 1372 |
| 354 | human behavior | 2 | 90 | 3702 | 3795 |
| 354 | Capitalism | 1 | 90 | 448 | 135 |
| 356 | Molecular Microbiology | 4 | 89 | 934 | 1507 |
| 357 | cytokines | 5 | 88 | 1258 | 1877 |
| 358 | Epidemiology | 3 | 87 | 5078 | 4992 |
| 358 | infection | 4 | 87 | 1941 | 2383 |
| 360 | Hypertension | 2 | 84 | 2493 | 2698 |
| 360 | Entomology | 5 | 84 | 2334 | 2199 |
| 362 | Structural Engineering | 1 | 81 | 2821 | 1614 |
| 362 | Building Materials | 2 | 81 | 2179 | 2248 |
| 362 | Cardiovascular system | 1 | 81 | 3011 | 2767 |
| 362 | Extreme environments | 1 | 81 | 543 | 374 |
| 366 | Engineering Mathematics | 6 | 80 | 2182 | 2080 |
| 367 | Women's health | 2 | 79 | 2158 | 1639 |
| 368 | Immune system | 2 | 78 | 1652 | 1900 |
| 368 | Solar System | 5 | 78 | 794 | 1025 |
| 370 | Biogeochemistry | 2 | 77 | 1581 | 1713 |
| 370 | Biodiversity | 2 | 77 | 3296 | 2945 |
| 372 | Medical Technology | 6 | 76 | 1582 | 2508 |
| 372 | Ultrasonics | 5 | 76 | 914 | 1610 |
| 374 | Industrial Organization | 1 | 74 | 664 | 370 |
| 374 | Patient education | 2 | 74 | 998 | 1029 |
| 374 | Solid State Chemistry | 2 | 74 | 3246 | 2654 |
| 374 | counseling | 2 | 74 | 2049 | 1630 |
| 378 | Maternal health services | 1 | 72 | 1007 | 618 |
| 378 | drug resistance | 2 | 72 | 1201 | 1136 |
| 378 | Child welfare | 1 | 72 | 2335 | 1327 |
| 378 | Eurasia | 1 | 72 | 514 | 202 |
| 378 | Central Asia | 1 | 72 | 579 | 178 |
| 378 | Soviet Union | 1 | 72 | 1625 | 396 |
| 384 | Social welfare | 1 | 70 | 1318 | 623 |
| 384 | Social work | 1 | 70 | 3074 | 1434 |
| 384 | Quantum theory | 2 | 70 | 1327 | 1039 |
| 387 | Sustainable Development | 2 | 69 | 3143 | 2857 |
| 387 | Neurosurgery | 2 | 69 | 1795 | 1668 |
| 387 | Biogeochemical cycles | 2 | 69 | 642 | 946 |
| 390 | Visual Perception | 6 | 68 | 1670 | 2614 |
| 390 | Memory | 6 | 68 | 1799 | 2889 |
| 390 | Attention | 6 | 68 | 1728 | 2711 |
| 390 | Perception | 6 | 68 | 1847 | 2826 |
| 394 | Schizophrenia | 2 | 64 | 1604 | 1745 |
| 394 | Pregnancy | 1 | 64 | 1856 | 1239 |
| 396 | Metallography | 1 | 62 | 1591 | 1111 |
| 396 | Plant diseases | 3 | 62 | 2318 | 2333 |
| 398 | Nanochemistry | 4 | 60 | 1218 | 1565 |
| 398 | Data Mining | 4 | 60 | 1738 | 2605 |
| 398 | Ecohydrology | 1 | 60 | 831 | 499 |
| 398 | Aquatic ecology | 1 | 60 | 1879 | 1279 |
| 402 | Particle Physics | 8 | 59 | 542 | 758 |
| 403 | Glaciology | 2 | 58 | 304 | 302 |
| 403 | Transplantation | 2 | 58 | 1862 | 2037 |
| 403 | glaciers | 2 | 58 | 277 | 293 |
| 403 | Ore deposits | 1 | 58 | 914 | 708 |
| 407 | Extracellular matrix | 3 | 57 | 333 | 638 |
| 407 | collagen | 3 | 57 | 357 | 655 |
| 409 | Biogeography | 1 | 56 | 1749 | 1819 |
| 409 | Transportation | 1 | 56 | 2964 | 2121 |
| 409 | data collection | 2 | 56 | 1801 | 2007 |
| 409 | ecosystem | 1 | 56 | 2546 | 2320 |
| 409 | Roads | 1 | 56 | 1407 | 743 |
| 409 | North America | 7 | 56 | 630 | 1195 |
| 415 | actuators | 2 | 55 | 2980 | 3286 |
| 415 | Diet | 2 | 55 | 3325 | 3721 |
| 415 | health planning | 3 | 55 | 2739 | 2879 |
| 415 | transducers | 2 | 55 | 2980 | 3286 |
| 419 | Geriatrics | 3 | 53 | 3948 | 4165 |
| 419 | Pharmacognosy | 2 | 53 | 2638 | 2987 |
| 419 | Medicinal plants | 2 | 53 | 2118 | 2432 |
| 422 | Sonochemistry | 2 | 52 | 866 | 1313 |
| 423 | Analytical Biochemistry | 1 | 51 | 3430 | 2721 |
| 423 | Semiconductors | 2 | 51 | 2877 | 2507 |
| 423 | Inflammation | 2 | 51 | 1996 | 2402 |
| 426 | Radio wave propagation | 4 | 50 | 801 | 902 |
| 426 | Plant hormones | 2 | 50 | 461 | 578 |
| 426 | carcinogens | 4 | 50 | 1118 | 1950 |
| 429 | Nursing | 1 | 49 | 3862 | 2380 |
| 429 | Immunopharmacology | 3 | 49 | 1305 | 1827 |
| 431 | Neuropsychology | 3 | 48 | 2862 | 3557 |
| 431 | Psychoneuroimmunology | 1 | 48 | 1413 | 1470 |
| 431 | Neuroimmunology | 1 | 48 | 1541 | 1609 |
| 431 | Electrochemical Analysis | 2 | 48 | 2083 | 2116 |
| 435 | Nuclear Energy | 2 | 47 | 1685 | 1239 |
| 435 | Landscape Ecology | 2 | 47 | 707 | 934 |
| 435 | Asia | 3 | 47 | 3592 | 3406 |
| 438 | Public Policy | 1 | 46 | 3661 | 2978 |
| 438 | Organometallic chemistry | 3 | 46 | 2305 | 2422 |
| 438 | Nanostructures | 3 | 46 | 2663 | 3418 |
| 438 | RNA | 2 | 46 | 774 | 1068 |
| 442 | Artificial Organs | 4 | 45 | 759 | 963 |
| 443 | soil management | 1 | 44 | 1109 | 1135 |
| 444 | Randomized Controlled Trials | 6 | 43 | 1044 | 1809 |
| 444 | Molecular Spectroscopy | 5 | 43 | 1691 | 2683 |
| 444 | Aging | 2 | 43 | 4390 | 4409 |
| 447 | Systems Engineering | 3 | 42 | 2580 | 2656 |
| 447 | Neuromuscular diseases | 1 | 42 | 1438 | 1301 |
| 447 | Muscles | 1 | 42 | 1857 | 1814 |
| 450 | Environmental Toxicology | 3 | 41 | 3012 | 4526 |
| 450 | men | 1 | 41 | 695 | 501 |
| 452 | Cell cycle | 1 | 39 | 729 | 651 |
| 452 | cell proliferation | 1 | 39 | 806 | 693 |
| 452 | drugs | 2 | 39 | 3427 | 3821 |
| 452 | Informatics | 1 | 39 | 1743 | 1519 |
| 456 | Pharmacy | 2 | 37 | 3269 | 3703 |
| 456 | Nuclear Engineering | 2 | 37 | 1828 | 1488 |
| 456 | Food Safety | 1 | 37 | 624 | 456 |
| 456 | General Surgery | 3 | 37 | 968 | 1171 |
| 456 | System analysis | 1 | 37 | 4572 | 3569 |
| 456 | Synapses | 1 | 37 | 624 | 637 |
| 456 | food industry | 1 | 37 | 1499 | 1081 |
| 456 | Genes | 3 | 37 | 1453 | 2134 |
| 464 | Ethics | 2 | 36 | 1492 | 1423 |
| 464 | Clinical Immunology | 1 | 36 | 2604 | 2448 |
| 464 | Developmental Immunology | 1 | 36 | 1693 | 1671 |
| 467 | Wildlife conservation | 1 | 35 | 2218 | 2398 |
| 467 | monetary policy | 1 | 35 | 154 | 54 |
| 467 | Sports | 2 | 35 | 2952 | 2741 |
| 467 | international trade | 1 | 35 | 1439 | 1066 |
| 467 | Economic reform | 1 | 35 | 172 | 48 |
| 472 | Pharmaceutical Technology | 2 | 34 | 2185 | 2749 |
| 472 | Molecules | 3 | 34 | 1834 | 2038 |
| 472 | venom | 2 | 34 | 1358 | 1491 |
| 472 | Toxins | 2 | 34 | 1494 | 1622 |
| 476 | Information Systems | 1 | 33 | 3096 | 2621 |
| 476 | Lipids | 1 | 33 | 2675 | 2829 |
| 478 | Physical Therapy | 3 | 32 | 1692 | 2619 |
| 478 | Bioremediation | 1 | 32 | 1807 | 1824 |
| 478 | Bifurcation Theory | 1 | 32 | 1257 | 884 |
| 478 | Water quality | 1 | 32 | 631 | 517 |
| 478 | Geriatric Oncology | 1 | 32 | 1359 | 1394 |
| 478 | pollutants | 1 | 32 | 3527 | 3730 |
| 478 | Environmental pollutants | 1 | 32 | 4162 | 4271 |
| 478 | Water chemistry | 1 | 32 | 907 | 698 |
| 478 | Insects | 3 | 32 | 1802 | 2190 |
| 487 | Manufacturing Processes | 1 | 31 | 3915 | 3462 |
| 487 | Production Engineering | 1 | 31 | 3518 | 2845 |
| 487 | Child | 2 | 31 | 3934 | 4233 |
| 487 | visualization | 8 | 31 | 1159 | 1641 |
| 487 | Adolescent | 2 | 31 | 3449 | 3728 |
| 492 | Music | 3 | 30 | 1126 | 1215 |
| 492 | Signal Processing | 1 | 30 | 3527 | 2991 |
| 492 | Photochemistry | 3 | 30 | 2203 | 3262 |
| 492 | voice | 3 | 30 | 603 | 870 |
| 492 | cell interaction | 3 | 30 | 1517 | 2527 |
| 492 | cloning | 3 | 30 | 875 | 1782 |
| 498 | Lung Transplantation | 1 | 29 | 1267 | 1018 |
| 498 | Heart transplantation | 1 | 29 | 1267 | 1018 |
| 498 | Ion channels | 1 | 29 | 219 | 237 |
| 501 | Computer Science | 1 | 28 | 4291 | 3245 |
| 501 | Health Services Research | 3 | 28 | 2302 | 3448 |
| 501 | Hydraulic Engineering | 2 | 28 | 1394 | 1637 |
| 501 | Turbulence | 1 | 28 | 500 | 428 |
| 505 | Structural biology | 1 | 27 | 210 | 336 |
| 505 | Raman spectroscopy | 1 | 27 | 1649 | 1644 |
| 505 | Drug delivery systems | 1 | 27 | 2888 | 3191 |
| 505 | Cerebral cortex | 1 | 27 | 1680 | 1971 |
| 509 | Forest Ecology | 1 | 26 | 1940 | 2165 |
| 509 | sustainability | 1 | 26 | 1747 | 1916 |
| 509 | Brachytherapy | 2 | 26 | 484 | 404 |
| 509 | Forest Management | 1 | 26 | 1907 | 2057 |
| 513 | poverty | 1 | 25 | 1024 | 1038 |
| 513 | healthcare disparities | 1 | 25 | 1200 | 1207 |
| 513 | Socioeconomic Factors | 1 | 25 | 1731 | 1927 |
| 513 | DNA repair | 1 | 25 | 674 | 786 |
| 517 | Health Services Administration | 2 | 24 | 1836 | 2497 |
| 517 | Metallurgy | 1 | 24 | 4324 | 3782 |
| 517 | Total Quality Management | 2 | 24 | 799 | 1208 |
| 517 | Antibacterial agents | 1 | 24 | 1597 | 1930 |
| 517 | Program Evaluation | 1 | 24 | 230 | 224 |
| 517 | Pediatric Neuropsychology | 1 | 24 | 245 | 164 |
| 517 | Ultrasonic Imaging | 3 | 24 | 622 | 1165 |
| 517 | hydrocolloids | 1 | 24 | 1158 | 1588 |
| 517 | evaluation | 1 | 24 | 411 | 326 |
| 517 | weight loss | 1 | 24 | 394 | 421 |
| 517 | Ultrasound | 3 | 24 | 676 | 1238 |
| 517 | Metals | 1 | 24 | 3872 | 3596 |
| 529 | Alternative Medicine | 3 | 23 | 2322 | 3894 |
| 529 | Evidence-Based Medicine | 2 | 23 | 2009 | 2638 |
| 529 | Soil biology | 1 | 23 | 1615 | 2008 |
| 529 | complementary therapies | 3 | 23 | 2539 | 4075 |
| 529 | Photobiology | 2 | 23 | 2082 | 2831 |
| 529 | cell adhesion molecules | 1 | 23 | 1182 | 1472 |
| 529 | Cell communication | 1 | 23 | 1724 | 2067 |
| 536 | emergency management | 2 | 22 | 1352 | 2002 |
| 536 | Tropical Medicine | 2 | 22 | 2956 | 3739 |
| 538 | Social Psychology | 2 | 21 | 3016 | 4013 |
| 538 | Nuclear Chemistry | 2 | 21 | 1649 | 1771 |
| 538 | Physical organic chemistry | 2 | 21 | 1941 | 2552 |
| 538 | Radiochemistry | 2 | 21 | 1562 | 1631 |
| 538 | Water quality management | 3 | 21 | 2231 | 3505 |
| 538 | biological evolution | 2 | 21 | 3116 | 4592 |
| 538 | Protein engineering | 1 | 21 | 542 | 704 |
| 538 | molecular design | 1 | 21 | 603 | 712 |
| 546 | Phytochemistry | 1 | 20 | 709 | 856 |
| 546 | air quality management | 2 | 20 | 842 | 1579 |
| 546 | Phytoremediation | 1 | 20 | 709 | 856 |
| 546 | environmental remediation | 1 | 20 | 854 | 984 |
| 546 | Ocean Engineering | 4 | 20 | 1630 | 3032 |
| 546 | Bioreactors | 1 | 20 | 709 | 856 |
| 546 | Mechanics | 4 | 20 | 1397 | 2130 |
| 546 | rare diseases | 2 | 20 | 1085 | 1672 |
| 546 | United Kingdom | 3 | 20 | 2147 | 3598 |
| 555 | Clinical Pharmacology | 1 | 19 | 2962 | 3279 |
| 555 | Hydraulic structures | 2 | 19 | 55 | 71 |
| 555 | Meteorites | 1 | 19 | 1579 | 2012 |
| 558 | Aerosols | 1 | 18 | 1179 | 1234 |
| 558 | Arthropods | 1 | 18 | 601 | 630 |
| 558 | aerosol | 1 | 18 | 824 | 881 |
| 561 | Neurochemistry | 1 | 17 | 4146 | 4854 |
| 561 | Pediatric Neurology | 1 | 17 | 2087 | 2801 |
| 561 | Antioxidants | 1 | 17 | 1567 | 2182 |
| 561 | Osteoporosis | 2 | 17 | 616 | 1122 |
| 561 | Social problems | 2 | 17 | 859 | 1389 |
| 561 | Nervous system | 1 | 17 | 4627 | 5420 |
| 561 | vitamin C | 1 | 17 | 938 | 1320 |
| 561 | vitamin E | 1 | 17 | 938 | 1320 |
| 569 | Education | 2 | 16 | 5796 | 6157 |
| 569 | Bioenergetics | 3 | 16 | 1057 | 2086 |
| 569 | Critical Care | 1 | 16 | 3277 | 3991 |
| 569 | Critical Care Medicine | 1 | 16 | 2942 | 3674 |
| 569 | polar regions | 1 | 16 | 1371 | 1559 |
| 569 | Growth factors | 1 | 16 | 674 | 1110 |
| 569 | Cytokine | 1 | 16 | 941 | 1340 |
| 569 | Egypt | 1 | 16 | 1232 | 1536 |
| 577 | Linguistics | 1 | 15 | 2851 | 2239 |
| 577 | Psycholinguistics | 1 | 15 | 1743 | 2008 |
| 577 | Neurolinguistics | 1 | 15 | 869 | 1122 |
| 577 | Stochastic Processes | 1 | 15 | 1798 | 1773 |
| 577 | Infertility | 1 | 15 | 2148 | 2426 |
| 577 | fertility | 1 | 15 | 2256 | 2553 |
| 583 | Ergonomics | 2 | 14 | 1580 | 2201 |
| 583 | Tourism | 1 | 14 | 2766 | 3229 |
| 583 | preventive medicine | 1 | 14 | 2922 | 3580 |
| 583 | Cosmochemistry | 2 | 14 | 1293 | 2175 |
| 583 | management | 1 | 14 | 5999 | 6230 |
| 583 | Continental shelf | 1 | 14 | 779 | 1056 |
| 583 | drug addiction | 1 | 14 | 2282 | 2898 |
| 583 | alcoholism | 1 | 14 | 2944 | 3587 |
| 583 | Digestive system diseases | 1 | 14 | 2009 | 2458 |
| 592 | Information Technology | 3 | 13 | 3067 | 4762 |
| 592 | Paleoclimatology | 1 | 13 | 1810 | 2269 |
| 592 | Paleoecology | 1 | 13 | 1754 | 2158 |
| 592 | Adsorption | 1 | 13 | 485 | 597 |
| 592 | mutation | 1 | 13 | 1324 | 1844 |
| 592 | Paleogeography | 1 | 13 | 1567 | 1967 |
| 592 | Marine Pollution | 2 | 13 | 1760 | 3003 |
| 592 | isomerism | 3 | 13 | 375 | 939 |
| 592 | particle beams | 2 | 13 | 302 | 491 |
| 592 | Chromosomes | 1 | 13 | 1959 | 2574 |
| 592 | Chemical industry | 1 | 13 | 2602 | 2739 |
| 592 | extraterrestrial environment | 2 | 13 | 959 | 1497 |
| 592 | astronomical phenomena | 2 | 13 | 866 | 1373 |
| 592 | Chirality | 3 | 13 | 375 | 939 |
| 606 | Economic History | 2 | 12 | 5131 | 5778 |
| 606 | Medical Ethics | 1 | 12 | 2473 | 2650 |
| 606 | Cardiovascular diseases | 1 | 12 | 3214 | 3670 |
| 606 | Aquaculture | 1 | 12 | 2585 | 3020 |
| 610 | Emergency Medicine | 3 | 11 | 2119 | 3654 |
| 610 | Vaccination | 2 | 11 | 415 | 983 |
| 610 | Magnetic Resonance Spectroscopy | 1 | 11 | 2245 | 2528 |
| 610 | Organometallic compounds | 2 | 11 | 1728 | 2546 |
| 610 | NMR | 1 | 11 | 1097 | 1259 |
| 610 | Bacterial diseases | 1 | 11 | 635 | 1027 |
| 610 | magnetic resonance | 1 | 11 | 1152 | 1293 |
| 617 | Anthropology | 1 | 10 | 3275 | 3194 |
| 617 | Sociology | 1 | 10 | 5963 | 6612 |
| 617 | Chemotherapy | 2 | 10 | 2425 | 3890 |
| 617 | Coastal zone management | 1 | 10 | 1398 | 1983 |
| 617 | Oxidative stress | 1 | 10 | 2308 | 3416 |
| 617 | Taste | 1 | 10 | 664 | 999 |
| 617 | flavor | 1 | 10 | 460 | 755 |
| 617 | Cell survival | 1 | 10 | 559 | 987 |
| 617 | smell | 1 | 10 | 664 | 999 |
| 617 | footwear | 2 | 10 | 86 | 127 |
| 617 | toxicity testing | 1 | 10 | 1648 | 2357 |
| 617 | molecular chaperones | 1 | 10 | 630 | 1003 |
| 629 | Kinesiology | 1 | 9 | 385 | 593 |
| 629 | Dermatology | 1 | 9 | 3396 | 3931 |
| 629 | Kinetics | 1 | 9 | 1117 | 1492 |
| 629 | Algorithms | 1 | 9 | 1412 | 1590 |
| 629 | economic indicators | 1 | 9 | 266 | 390 |
| 629 | Sustainable agriculture | 1 | 9 | 1584 | 2142 |
| 629 | Natural resources | 1 | 9 | 1551 | 2076 |
| 629 | Hydrodynamics | 1 | 9 | 1067 | 1537 |
| 629 | Risk assessment | 1 | 9 | 1431 | 1901 |
| 629 | Wind power | 1 | 9 | 683 | 887 |
| 629 | Health Risk Assessment | 1 | 9 | 1129 | 1554 |
| 629 | commerce | 1 | 9 | 2966 | 3319 |
| 629 | coal | 1 | 9 | 2789 | 3800 |
| 629 | strategy | 2 | 9 | 345 | 434 |
| 629 | pain | 1 | 9 | 2848 | 3555 |
| 629 | lasers | 1 | 9 | 3464 | 3668 |
| 629 | Cognition | 1 | 9 | 3064 | 3946 |
| 646 | Humanities | 1 | 8 | 3877 | 3710 |
| 646 | Materials Engineering | 2 | 8 | 1111 | 1932 |
| 646 | Veterinary Pathology | 1 | 8 | 717 | 891 |
| 646 | Statistical Mechanics | 3 | 8 | 1443 | 2252 |
| 646 | Animal breeding | 1 | 8 | 1491 | 1943 |
| 646 | Spintronics | 1 | 8 | 131 | 132 |
| 646 | Measurement | 2 | 8 | 1835 | 3284 |
| 646 | Soft Condensed Matter | 1 | 8 | 1927 | 2547 |
| 646 | Cytoskeleton | 1 | 8 | 589 | 955 |
| 646 | Calorimetry | 1 | 8 | 2207 | 2740 |
| 646 | Reproduction | 1 | 8 | 4386 | 5456 |
| 646 | Steroids | 1 | 8 | 1994 | 2765 |
| 646 | biopolymers | 1 | 8 | 2170 | 2879 |
| 646 | Thermal analysis | 1 | 8 | 2207 | 2740 |
| 660 | Political Economy | 3 | 7 | 160 | 409 |
| 660 | Histochemistry | 1 | 7 | 2259 | 2993 |
| 660 | Plant Morphology | 1 | 7 | 1163 | 1606 |
| 660 | acupuncture | 1 | 7 | 542 | 561 |
| 660 | Light | 1 | 7 | 1979 | 2799 |
| 665 | Marine Engineering | 2 | 6 | 433 | 699 |
| 665 | Tribology | 1 | 6 | 2143 | 2802 |
| 665 | Naval Architecture | 2 | 6 | 464 | 903 |
| 665 | Quantum electronics | 1 | 6 | 2090 | 2387 |
| 665 | Molecular Genetics | 1 | 6 | 3785 | 5176 |
| 665 | Heat Exchangers | 1 | 6 | 2108 | 3104 |
| 665 | greenhouse effect | 1 | 6 | 191 | 385 |
| 665 | Fracture mechanics | 1 | 6 | 2439 | 3190 |
| 665 | Mutagenesis | 1 | 6 | 1092 | 1692 |
| 665 | Corporate governance | 1 | 6 | 1204 | 1792 |
| 665 | gene therapy | 1 | 6 | 2374 | 3388 |
| 665 | teratogenic agents | 1 | 6 | 600 | 985 |
| 665 | Carbon dioxide | 1 | 6 | 191 | 385 |
| 665 | Sun | 1 | 6 | 717 | 951 |
| 665 | Decision making | 1 | 6 | 3214 | 4381 |
| 665 | Phylogeny | 1 | 6 | 1678 | 2557 |
| 681 | Control Theory | 1 | 5 | 2861 | 3464 |
| 681 | health services accessibility | 1 | 5 | 2114 | 3125 |
| 681 | medical errors | 1 | 5 | 193 | 422 |
| 681 | Synchrotron Radiation | 1 | 5 | 833 | 1174 |
| 681 | Freeze-Drying | 1 | 5 | 1135 | 1444 |
| 681 | Hypothermia | 1 | 5 | 1135 | 1444 |
| 681 | Leukemia | 1 | 5 | 2346 | 2810 |
| 681 | Freeze Drying | 1 | 5 | 1135 | 1444 |
| 681 | safety | 1 | 5 | 252 | 540 |
| 681 | Japan | 1 | 5 | 4079 | 4916 |
| 691 | Civil Engineering | 2 | 4 | 2573 | 3820 |
| 691 | Clinical Psychology | 1 | 4 | 2830 | 4049 |
| 691 | International Relations | 1 | 4 | 2258 | 2345 |
| 691 | Community Psychology | 1 | 4 | 1165 | 1880 |
| 691 | Econometrics | 1 | 4 | 2373 | 2978 |
| 691 | Cartography | 1 | 4 | 1202 | 1331 |
| 691 | Quantum Chemistry | 1 | 4 | 1717 | 2164 |
| 691 | Nanobiotechnology | 1 | 4 | 925 | 1704 |
| 691 | Shock Waves | 1 | 4 | 419 | 642 |
| 691 | Budget | 1 | 4 | 339 | 519 |
| 701 | Electrical Engineering | 1 | 3 | 5974 | 6501 |
| 701 | Educational Technology | 1 | 3 | 3053 | 4416 |
| 701 | Periglacial processes | 1 | 3 | 283 | 533 |
| 701 | Research Design | 1 | 3 | 2751 | 4285 |
| 701 | Hormones | 1 | 3 | 2605 | 3838 |
| 701 | Permafrost | 1 | 3 | 283 | 533 |
| 701 | particles | 1 | 3 | 2000 | 3005 |
| 701 | Frozen ground | 1 | 3 | 287 | 537 |
| 701 | Student Health Services | 1 | 3 | 571 | 987 |
| 701 | Detectors | 1 | 3 | 2008 | 2982 |
| 701 | standardization | 1 | 3 | 190 | 326 |
| 701 | Pancreatic diseases | 1 | 3 | 1112 | 1239 |
| 713 | Zoology | 1 | 2 | 4492 | 5971 |
| 713 | Electromagnetism | 1 | 2 | 1462 | 2121 |
| 713 | Geomagnetism | 1 | 2 | 1223 | 1783 |
| 713 | Photogrammetry | 3 | 2 | 1072 | 2220 |
| 713 | nuclear astrophysics | 1 | 2 | 892 | 1264 |
| 713 | animals | 1 | 2 | 2555 | 3693 |
| 719 | Atmospheric Science | 1 | 1 | 448 | 821 |
| 719 | Urban Economics | 1 | 1 | 702 | 1159 |
| 719 | Nondestructive testing | 1 | 1 | 1370 | 2174 |
| 719 | Mineralogy | 1 | 1 | 2460 | 3516 |
| 719 | Nonlinear functional analysis | 1 | 1 | 1886 | 2564 |
| 719 | Waste management | 1 | 1 | 2716 | 4243 |
| 719 | Water Purification | 1 | 1 | 2184 | 3505 |
| 719 | Primary health care | 1 | 1 | 3823 | 5958 |
| 719 | Access to Information | 1 | 1 | 452 | 1120 |
| 719 | big data | 1 | 1 | 1254 | 2234 |
| 719 | Korea | 1 | 1 | 833 | 1426 |
| 719 | space environment | 2 | 1 | 356 | 769 |
| 719 | peptides | 1 | 1 | 1916 | 3073 |
| 719 | Minority Health | 1 | 1 | 220 | 554 |
| 719 | Peptide | 1 | 1 | 461 | 713 |
| 719 | Israel | 1 | 1 | 343 | 564 |
| 719 | Spain | 1 | 1 | 1620 | 2053 |
| 719 | Information dissemination | 1 | 1 | 452 | 1120 |
| 737 | Computer Graphics | 1 | 0 | 2997 | 4605 |
| 737 | Probability | 1 | 0 | 1264 | 2228 |
| 737 | Risk Management | 1 | 0 | 1698 | 3194 |
| 737 | Wireless Communication Systems | 1 | 0 | 3456 | 4912 |
| 737 | Radiotherapy | 1 | 0 | 856 | 1048 |
| 737 | Social Change | 1 | 0 | 1907 | 3237 |
| 737 | Financial management | 1 | 0 | 1111 | 2092 |
| 737 | Respiratory system | 1 | 0 | 1308 | 2216 |
| 737 | Risk | 1 | 0 | 1230 | 2238 |
| 737 | Teaching | 1 | 0 | 3444 | 5416 |
| 737 | Respiration | 1 | 0 | 2915 | 4444 |
| 737 | Familial diseases | 1 | 0 | 583 | 1112 |
| 737 | India | 1 | 0 | 3750 | 5328 |
| 737 | Liver diseases | 1 | 0 | 2781 | 4219 |
