| 1 | Materials | 364 | 8.8K | 464 | 662 |
| 2 | Chemistry | 214 | 6.7K | 1299 | 1403 |
| 3 | Materials Science | 122 | 4.0K | 638 | 723 |
| 4 | Nanotechnology | 97 | 3.2K | 877 | 1015 |
| 5 | Chemical Engineering | 113 | 3.1K | 748 | 925 |
| 6 | Physics | 168 | 3.1K | 1388 | 2068 |
| 7 | Environment | 56 | 2.3K | 1025 | 1329 |
| 8 | Metals | 52 | 2.2K | 365 | 332 |
| 9 | China | 92 | 2.0K | 267 | 251 |
| 10 | Biomedical Engineering | 86 | 2.0K | 802 | 997 |
| 10 | Biochemical Engineering | 55 | 2.0K | 679 | 944 |
| 12 | Optical materials | 47 | 2.0K | 577 | 591 |
| 13 | Biocompatible Materials | 46 | 1.7K | 964 | 1086 |
| 14 | Biomass Energy | 33 | 1.7K | 579 | 577 |
| 15 | Science | 47 | 1.7K | 2392 | 2589 |
| 16 | Surface Chemistry | 66 | 1.6K | 826 | 1002 |
| 17 | Biology | 30 | 1.6K | 2688 | 2485 |
| 18 | Analytical Chemistry | 77 | 1.6K | 898 | 1122 |
| 19 | Colloids | 59 | 1.5K | 883 | 1078 |
| 20 | Energy Policy | 42 | 1.5K | 541 | 719 |
| 21 | Nanostructured Materials | 42 | 1.4K | 865 | 868 |
| 22 | Biochemistry | 63 | 1.4K | 2093 | 2367 |
| 23 | Metallurgy | 45 | 1.4K | 472 | 458 |
| 24 | Pollution | 41 | 1.3K | 1514 | 1765 |
| 25 | Medicine | 58 | 1.3K | 2124 | 2437 |
| 26 | Optics | 120 | 1.3K | 668 | 920 |
| 27 | actuators | 56 | 1.2K | 329 | 581 |
| 27 | transducers | 56 | 1.2K | 329 | 581 |
| 29 | Catalysis | 40 | 1.2K | 1185 | 1330 |
| 30 | Ecology | 40 | 1.2K | 1762 | 2201 |
| 31 | nanoscience | 31 | 1.2K | 862 | 944 |
| 32 | Renewable Energy Sources | 23 | 1.1K | 861 | 1071 |
| 33 | Biotechnology | 40 | 1.1K | 1558 | 1851 |
| 34 | Signal Processing | 47 | 1.1K | 595 | 732 |
| 35 | Electrochemistry | 67 | 1.0K | 938 | 1095 |
| 36 | Mechanical Engineering | 79 | 993 | 298 | 420 |
| 37 | Artificial Intelligence | 76 | 938 | 581 | 1138 |
| 38 | Detectors | 55 | 918 | 146 | 260 |
| 39 | Polymers | 59 | 916 | 1117 | 1414 |
| 40 | Environmental Health | 33 | 912 | 1592 | 1842 |
| 41 | energy conservation | 22 | 904 | 589 | 728 |
| 41 | Research | 56 | 904 | 1941 | 2448 |
| 43 | Mathematics | 113 | 899 | 1187 | 1440 |
| 44 | polymerization | 53 | 841 | 996 | 1234 |
| 45 | Composite Materials | 36 | 832 | 734 | 1026 |
| 46 | Information Science | 23 | 818 | 787 | 747 |
| 47 | environmental pollution | 28 | 812 | 1461 | 1769 |
| 48 | Bioengineering | 23 | 788 | 1448 | 1588 |
| 49 | Environmental Management | 25 | 784 | 922 | 1201 |
| 50 | coal | 14 | 779 | 689 | 571 |
| 51 | fuel cells | 12 | 769 | 592 | 496 |
| 52 | Metallography | 36 | 760 | 106 | 140 |
| 53 | Technology | 45 | 735 | 865 | 1108 |
| 54 | Manufacturing Processes | 56 | 716 | 388 | 731 |
| 55 | Electronics | 35 | 707 | 976 | 1008 |
| 56 | Biosensors | 16 | 686 | 465 | 596 |
| 57 | Environmental monitoring | 19 | 681 | 1559 | 1627 |
| 58 | environmental protection | 29 | 670 | 1016 | 1367 |
| 59 | Bioelectronics | 14 | 663 | 411 | 526 |
| 60 | Fuzzy systems | 21 | 650 | 415 | 211 |
| 61 | Neural circuitry | 39 | 637 | 340 | 693 |
| 62 | Engineering | 41 | 636 | 1046 | 1229 |
| 63 | Biophysics | 20 | 626 | 2046 | 2030 |
| 64 | Cybernetics | 11 | 613 | 795 | 584 |
| 65 | Water | 10 | 612 | 1309 | 1173 |
| 66 | Nanoparticles | 19 | 594 | 649 | 702 |
| 67 | Molecular Biology | 39 | 571 | 2185 | 3077 |
| 68 | finance | 23 | 570 | 787 | 798 |
| 69 | Pharmacology | 27 | 557 | 1652 | 1913 |
| 70 | Water pollution | 12 | 542 | 1386 | 1286 |
| 70 | Heat Exchangers | 21 | 542 | 360 | 523 |
| 72 | Image Processing | 60 | 537 | 346 | 914 |
| 73 | Tribology | 21 | 528 | 351 | 347 |
| 74 | Production Engineering | 45 | 523 | 348 | 573 |
| 75 | electric vehicles | 18 | 515 | 72 | 80 |
| 76 | Statistical physics | 25 | 509 | 1309 | 1342 |
| 77 | Environmental Policy | 21 | 501 | 1112 | 1627 |
| 78 | lasers | 27 | 496 | 631 | 666 |
| 79 | Systems Engineering | 34 | 467 | 460 | 803 |
| 80 | Photonics | 18 | 464 | 785 | 917 |
| 81 | Intelligent Transportation Systems | 12 | 459 | 473 | 512 |
| 82 | Green Chemistry | 15 | 449 | 741 | 993 |
| 83 | Industrial Engineering | 21 | 445 | 550 | 724 |
| 84 | Nanostructures | 11 | 440 | 984 | 900 |
| 85 | vibration | 16 | 439 | 418 | 429 |
| 86 | machinery | 30 | 436 | 105 | 192 |
| 87 | Structural dynamics | 11 | 423 | 475 | 502 |
| 88 | Spectrum analysis | 29 | 415 | 1546 | 1921 |
| 89 | Structural Engineering | 13 | 411 | 763 | 690 |
| 90 | Automation | 21 | 390 | 840 | 1136 |
| 91 | Building Materials | 14 | 380 | 833 | 1093 |
| 92 | Bioorganic chemistry | 12 | 377 | 1414 | 1386 |
| 93 | Toxicology | 13 | 364 | 2166 | 2281 |
| 94 | Solar Energy | 5 | 348 | 1375 | 963 |
| 95 | Computational Complexity | 22 | 345 | 173 | 210 |
| 96 | Carbon | 9 | 338 | 721 | 886 |
| 97 | natural gas | 5 | 328 | 234 | 146 |
| 98 | Sustainable Engineering | 13 | 316 | 706 | 947 |
| 99 | Pharmaceutical Chemistry | 15 | 311 | 1594 | 1815 |
| 100 | Internet of Things | 15 | 307 | 424 | 642 |
| 100 | internet | 15 | 307 | 590 | 816 |
| 102 | mass transfer | 14 | 303 | 789 | 969 |
| 103 | Computational Intelligence | 11 | 295 | 213 | 210 |
| 104 | Digital electronics | 2 | 288 | 420 | 21 |
| 105 | Environmental Toxicology | 6 | 285 | 1701 | 1531 |
| 105 | pollutants | 6 | 285 | 1315 | 1164 |
| 105 | Environmental pollutants | 6 | 285 | 1591 | 1354 |
| 105 | environmental exposure | 6 | 285 | 1318 | 1111 |
| 109 | Mathematical Physics | 21 | 283 | 1205 | 1283 |
| 109 | Luminescence | 15 | 283 | 485 | 496 |
| 111 | Mechatronics | 11 | 274 | 371 | 439 |
| 111 | Diagnostic Imaging | 18 | 274 | 614 | 870 |
| 113 | reasoning | 5 | 273 | 261 | 123 |
| 114 | Environmental Engineering | 15 | 268 | 1686 | 2184 |
| 115 | Nuclear Physics | 15 | 265 | 2094 | 2119 |
| 116 | Molecular Spectroscopy | 15 | 263 | 761 | 938 |
| 117 | Computer Vision | 11 | 258 | 536 | 737 |
| 118 | Multimedia Systems | 14 | 254 | 760 | 821 |
| 119 | Magnetic Materials | 11 | 247 | 818 | 879 |
| 120 | Computer Science | 33 | 242 | 376 | 849 |
| 121 | Measurement | 20 | 239 | 387 | 663 |
| 122 | System analysis | 15 | 238 | 1034 | 1309 |
| 123 | Condensed Matter | 15 | 235 | 1508 | 1677 |
| 124 | Dynamics | 11 | 233 | 823 | 688 |
| 125 | Bioinformatics | 6 | 229 | 1324 | 1170 |
| 125 | computer networks | 19 | 229 | 931 | 1460 |
| 127 | Solid State Chemistry | 20 | 227 | 1087 | 1431 |
| 128 | International Finance | 14 | 220 | 754 | 1015 |
| 129 | Economics | 15 | 219 | 1926 | 2035 |
| 130 | Metallic Glasses | 9 | 218 | 208 | 240 |
| 131 | Smart Materials | 22 | 214 | 212 | 495 |
| 132 | health planning | 12 | 211 | 1055 | 1125 |
| 133 | Intelligent Control Systems | 17 | 208 | 281 | 321 |
| 134 | Electrical Engineering | 32 | 206 | 999 | 1423 |
| 135 | Herbal medicine | 5 | 198 | 489 | 522 |
| 136 | sanitation | 2 | 197 | 1553 | 1353 |
| 137 | environmental indicators | 5 | 189 | 898 | 979 |
| 138 | Computer Graphics | 24 | 188 | 513 | 1000 |
| 139 | Fiber Optics | 13 | 184 | 400 | 535 |
| 140 | Power Electronics | 6 | 180 | 759 | 809 |
| 141 | Physical Chemistry | 37 | 177 | 554 | 1420 |
| 142 | Structural design | 16 | 171 | 237 | 528 |
| 143 | Astrophysics | 35 | 170 | 1089 | 1937 |
| 143 | Semiconductors | 14 | 170 | 965 | 1164 |
| 145 | Solid State Physics | 19 | 168 | 1732 | 2233 |
| 145 | Environmental Chemistry | 5 | 168 | 1574 | 1729 |
| 147 | Organic Chemistry | 11 | 166 | 1749 | 2011 |
| 148 | Ceramics | 10 | 162 | 745 | 824 |
| 149 | Computational Biology | 5 | 157 | 1775 | 1642 |
| 149 | Social Change | 2 | 157 | 1261 | 1077 |
| 151 | Medical Laboratory Science | 2 | 152 | 2044 | 1618 |
| 152 | Fracture mechanics | 6 | 151 | 999 | 975 |
| 152 | Ocean Engineering | 9 | 151 | 991 | 1233 |
| 154 | Energy Storage | 12 | 150 | 556 | 959 |
| 155 | Evidence-Based Medicine | 4 | 147 | 528 | 451 |
| 156 | Glass | 9 | 146 | 551 | 751 |
| 157 | software | 9 | 144 | 520 | 891 |
| 158 | Surface-Active Agents | 4 | 142 | 978 | 1027 |
| 158 | Surface properties | 4 | 142 | 1033 | 1101 |
| 160 | pottery | 8 | 141 | 565 | 742 |
| 161 | biological factors | 6 | 138 | 1330 | 1386 |
| 162 | tomography | 1 | 133 | 558 | 194 |
| 163 | Nonlinear functional analysis | 7 | 130 | 773 | 790 |
| 163 | Radio | 2 | 130 | 1518 | 1107 |
| 165 | Cytology | 10 | 128 | 1977 | 2780 |
| 165 | Molecular structure | 10 | 128 | 1337 | 1663 |
| 167 | Chemical analysis | 9 | 125 | 584 | 921 |
| 168 | Sustainable Development | 12 | 124 | 870 | 1819 |
| 169 | Structural optimization | 3 | 123 | 338 | 287 |
| 170 | Pharmacognosy | 7 | 118 | 1172 | 1699 |
| 170 | Clinical Chemistry | 5 | 118 | 1771 | 1987 |
| 172 | Agricultural Engineering | 2 | 116 | 538 | 384 |
| 173 | Statistics | 24 | 115 | 959 | 1543 |
| 174 | Operations Research | 11 | 114 | 1225 | 1675 |
| 175 | Microbiology | 9 | 113 | 3196 | 4271 |
| 175 | Numerical Analysis | 10 | 113 | 1408 | 1565 |
| 177 | Geophysics | 6 | 112 | 2288 | 2489 |
| 177 | miniaturization | 5 | 112 | 1318 | 1627 |
| 179 | Nanochemistry | 9 | 110 | 613 | 1015 |
| 179 | Telecommunication | 7 | 110 | 1729 | 1928 |
| 181 | Social Sciences | 12 | 107 | 1700 | 2266 |
| 181 | Information Technology | 9 | 107 | 1381 | 1993 |
| 181 | Cell death | 3 | 107 | 941 | 1128 |
| 184 | Energy Conversion | 5 | 106 | 917 | 1316 |
| 185 | Technological Innovations | 2 | 105 | 1308 | 953 |
| 186 | Robotics | 9 | 101 | 1007 | 1390 |
| 186 | Fractals | 9 | 101 | 617 | 1026 |
| 188 | free radicals | 6 | 98 | 873 | 1392 |
| 189 | Humanities | 11 | 97 | 798 | 1104 |
| 190 | Control Theory | 14 | 95 | 829 | 1309 |
| 191 | Thin Films | 4 | 92 | 431 | 341 |
| 191 | Investment analysis | 8 | 92 | 481 | 833 |
| 191 | carbon monoxide | 1 | 92 | 676 | 463 |
| 194 | Cognitive Science | 4 | 89 | 1333 | 1571 |
| 195 | Adhesion | 7 | 86 | 369 | 578 |
| 195 | clay | 1 | 86 | 1298 | 1001 |
| 195 | adhesives | 7 | 86 | 397 | 583 |
| 198 | Microelectronics | 3 | 84 | 1546 | 1570 |
| 199 | Neurochemistry | 3 | 83 | 1891 | 1972 |
| 199 | management | 12 | 83 | 1771 | 3047 |
| 201 | Nanobiotechnology | 4 | 82 | 325 | 675 |
| 201 | Solitons | 8 | 82 | 678 | 1140 |
| 201 | Chaos | 8 | 82 | 678 | 1140 |
| 201 | Asia | 2 | 82 | 3301 | 2088 |
| 205 | Immunotherapy | 5 | 80 | 1201 | 1640 |
| 205 | Quantum Gravity | 2 | 80 | 1978 | 1656 |
| 205 | Chemical kinetics | 16 | 80 | 175 | 456 |
| 208 | Nervous system | 5 | 79 | 1632 | 2055 |
| 209 | United States | 4 | 78 | 3867 | 3738 |
| 210 | Combustion | 8 | 77 | 747 | 1205 |
| 210 | Emulsions | 8 | 77 | 149 | 242 |
| 212 | Wireless Communication Systems | 17 | 76 | 1017 | 1951 |
| 213 | Pharmaceutical Technology | 4 | 75 | 1266 | 1521 |
| 214 | proteins | 6 | 72 | 1291 | 1735 |
| 215 | Plastics | 3 | 71 | 1611 | 1493 |
| 215 | pigments | 4 | 71 | 742 | 958 |
| 217 | solar power | 2 | 70 | 999 | 1111 |
| 217 | Ultrasonics | 3 | 70 | 1199 | 1522 |
| 217 | solar cells | 2 | 70 | 1065 | 1160 |
| 220 | peptides | 5 | 69 | 552 | 698 |
| 221 | Information Systems | 5 | 68 | 1060 | 1463 |
| 221 | Sonochemistry | 2 | 68 | 816 | 1070 |
| 223 | Educational Technology | 3 | 67 | 1655 | 1733 |
| 223 | Decision making | 10 | 67 | 708 | 1445 |
| 223 | Cancer | 2 | 67 | 2577 | 2665 |
| 226 | Drug design | 4 | 66 | 1240 | 1595 |
| 226 | Mechanics | 3 | 66 | 1326 | 1114 |
| 226 | ozone | 5 | 66 | 52 | 108 |
| 226 | Hazardous waste | 4 | 66 | 809 | 1470 |
| 230 | Adaptive control systems | 6 | 65 | 369 | 532 |
| 231 | Imaging systems | 20 | 64 | 124 | 597 |
| 232 | Optoelectronics | 12 | 63 | 172 | 354 |
| 232 | Medicinal plants | 3 | 63 | 1318 | 1720 |
| 232 | mathematical analysis | 19 | 63 | 1132 | 1852 |
| 232 | Plant cells | 1 | 63 | 1316 | 1466 |
| 236 | Nutrition | 6 | 62 | 2598 | 3579 |
| 236 | Human-Computer Interaction | 6 | 62 | 1051 | 1655 |
| 236 | Membranes | 2 | 62 | 1709 | 1847 |
| 239 | Physiology | 5 | 61 | 2710 | 3506 |
| 240 | Transportation | 3 | 60 | 1561 | 1654 |
| 241 | Ceramic materials | 4 | 59 | 1167 | 1406 |
| 242 | Immunology | 5 | 58 | 2002 | 2709 |
| 242 | radioactive waste | 3 | 58 | 811 | 1476 |
| 242 | industrial waste | 3 | 58 | 846 | 1478 |
| 245 | Bioinorganic chemistry | 4 | 57 | 1203 | 1491 |
| 246 | Visual Communication | 8 | 56 | 164 | 456 |
| 246 | Image enhancement | 8 | 56 | 128 | 415 |
| 246 | Communication | 8 | 56 | 1253 | 2062 |
| 249 | Microstructure | 4 | 55 | 782 | 831 |
| 249 | catalytic activity | 3 | 55 | 655 | 850 |
| 251 | Data Mining | 6 | 54 | 1074 | 1902 |
| 251 | Biopharmaceutics | 6 | 54 | 693 | 1291 |
| 253 | Medical Physics | 5 | 53 | 1113 | 1551 |
| 253 | Cell Biology | 4 | 53 | 2565 | 3373 |
| 253 | Tourism | 2 | 53 | 1925 | 2085 |
| 253 | Porous materials | 3 | 53 | 788 | 794 |
| 257 | Psychology | 5 | 52 | 3478 | 4120 |
| 257 | Petroleum Engineering | 1 | 52 | 1052 | 784 |
| 257 | Nuclear Engineering | 10 | 52 | 781 | 1260 |
| 257 | Formal Languages | 3 | 52 | 292 | 177 |
| 257 | cytokines | 5 | 52 | 843 | 1474 |
| 262 | Analytical Biochemistry | 6 | 50 | 1186 | 1826 |
| 262 | econometric models | 2 | 50 | 832 | 874 |
| 264 | Economic History | 7 | 49 | 2124 | 2764 |
| 264 | Plasma chemistry | 2 | 49 | 482 | 480 |
| 266 | Database Management | 6 | 48 | 543 | 889 |
| 266 | Waste management | 5 | 48 | 1078 | 1574 |
| 266 | Entropy | 7 | 48 | 702 | 1224 |
| 266 | drugs | 3 | 48 | 1747 | 2078 |
| 270 | Pharmacokinetics | 6 | 47 | 520 | 1149 |
| 270 | Geographic information systems | 2 | 47 | 1370 | 1197 |
| 270 | Combinatorial optimization | 10 | 47 | 155 | 414 |
| 270 | Host-parasite interactions | 2 | 47 | 1247 | 1585 |
| 270 | Virulence | 2 | 47 | 1082 | 1454 |
| 270 | Immunity | 2 | 47 | 1608 | 1954 |
| 276 | Medical genetics | 1 | 46 | 2394 | 2345 |
| 276 | Cytogenetics | 1 | 46 | 1646 | 1531 |
| 276 | Telemedicine | 1 | 46 | 629 | 506 |
| 276 | Urban Transportation | 2 | 46 | 168 | 139 |
| 280 | Organometallic chemistry | 7 | 45 | 1450 | 2200 |
| 281 | Immunopharmacology | 4 | 44 | 849 | 1321 |
| 281 | Expert Systems | 4 | 44 | 113 | 266 |
| 283 | Nuclear Energy | 5 | 43 | 720 | 953 |
| 283 | Mobile Computing | 11 | 43 | 499 | 1254 |
| 283 | marketing | 1 | 43 | 2597 | 2239 |
| 286 | natural products | 2 | 42 | 2053 | 1934 |
| 287 | Information Theory | 2 | 41 | 1532 | 1485 |
| 287 | Raman spectroscopy | 1 | 41 | 1299 | 1079 |
| 287 | Energy Harvesting | 1 | 41 | 656 | 819 |
| 287 | Infrared spectroscopy | 1 | 41 | 686 | 512 |
| 287 | multimedia | 2 | 41 | 610 | 763 |
| 287 | Interactive multimedia | 2 | 41 | 706 | 849 |
| 293 | Geometry | 12 | 40 | 593 | 961 |
| 293 | Fluid Mechanics | 4 | 40 | 1272 | 1608 |
| 293 | Land use | 2 | 40 | 1362 | 1651 |
| 293 | soil conservation | 2 | 40 | 989 | 1192 |
| 293 | Business Ethics | 1 | 40 | 1539 | 1591 |
| 293 | land degradation | 2 | 40 | 621 | 852 |
| 293 | degradation | 2 | 40 | 621 | 852 |
| 300 | Bioenergetics | 4 | 39 | 697 | 1227 |
| 301 | economic policy | 4 | 38 | 1976 | 2213 |
| 301 | Capital market | 4 | 38 | 347 | 723 |
| 303 | Quantum electronics | 4 | 37 | 1384 | 1673 |
| 303 | Electromagnetism | 3 | 37 | 1001 | 1177 |
| 305 | Histology | 1 | 36 | 2244 | 2116 |
| 305 | Optical Communications | 2 | 36 | 937 | 890 |
| 305 | Water Purification | 3 | 36 | 1132 | 1478 |
| 305 | blood substitutes | 1 | 36 | 143 | 92 |
| 305 | Water quality management | 3 | 36 | 1803 | 2214 |
| 305 | Chemical industry | 4 | 36 | 1123 | 1526 |
| 305 | energy development | 3 | 36 | 827 | 1407 |
| 305 | artificial cells | 1 | 36 | 178 | 103 |
| 313 | Fluid Dynamics | 1 | 35 | 1565 | 1337 |
| 313 | Energy Consumption | 2 | 35 | 487 | 742 |
| 313 | Transnational corporations | 3 | 35 | 388 | 723 |
| 313 | Biomass | 3 | 35 | 695 | 1312 |
| 317 | Mineralogy | 2 | 34 | 1430 | 1507 |
| 318 | Agricultural Chemistry | 3 | 33 | 2076 | 2754 |
| 318 | Alternative Medicine | 2 | 33 | 1776 | 2212 |
| 318 | Molecules | 3 | 33 | 1481 | 1557 |
| 321 | Environmental Law | 1 | 32 | 1590 | 1838 |
| 321 | Combinatorial chemistry | 1 | 32 | 1074 | 1198 |
| 321 | Nonlinear Dynamics | 4 | 32 | 1585 | 2093 |
| 321 | Nonlinear systems | 2 | 32 | 750 | 825 |
| 325 | Geology | 2 | 31 | 2827 | 2961 |
| 325 | Thermodynamics | 4 | 31 | 1106 | 1333 |
| 325 | Biodegradation | 1 | 31 | 1304 | 1374 |
| 325 | Respiration | 1 | 31 | 1744 | 1752 |
| 325 | Australia | 4 | 31 | 1537 | 2173 |
| 330 | Computer Engineering | 3 | 30 | 1009 | 1396 |
| 330 | Invertebrates | 1 | 30 | 1015 | 927 |
| 332 | Telecommunication Systems | 5 | 29 | 1298 | 1893 |
| 332 | Nondestructive testing | 2 | 29 | 829 | 948 |
| 332 | Nanophotonics | 2 | 29 | 409 | 607 |
| 332 | Computer-Aided Design | 1 | 29 | 1824 | 1650 |
| 336 | Geomorphology | 3 | 27 | 1301 | 2012 |
| 336 | Industrial Microbiology | 1 | 27 | 2629 | 2789 |
| 336 | Industrial Safety | 2 | 27 | 1447 | 1686 |
| 336 | Electrochemical Analysis | 4 | 27 | 1386 | 2087 |
| 336 | Antioxidants | 1 | 27 | 1061 | 1281 |
| 336 | biomedicine | 5 | 27 | 316 | 975 |
| 336 | vitamin C | 1 | 27 | 706 | 829 |
| 336 | vitamin E | 1 | 27 | 706 | 829 |
| 344 | Geography | 1 | 26 | 2723 | 2557 |
| 344 | Sensor Networks | 1 | 26 | 537 | 396 |
| 344 | Molecular evolution | 5 | 26 | 1055 | 2292 |
| 344 | Business | 3 | 26 | 2118 | 2908 |
| 348 | Quality Control | 4 | 25 | 1486 | 2629 |
| 348 | nuclear magnetic resonance | 2 | 25 | 1035 | 1104 |
| 348 | Magnetic Resonance Spectroscopy | 2 | 25 | 1203 | 1279 |
| 351 | Hydrology | 2 | 24 | 2588 | 2983 |
| 351 | Organizational learning | 5 | 24 | 209 | 815 |
| 351 | Behavioral research | 1 | 24 | 1167 | 974 |
| 351 | Knowledge management | 5 | 24 | 192 | 758 |
| 351 | Learning | 2 | 24 | 1358 | 1783 |
| 351 | Memory | 2 | 24 | 1596 | 2045 |
| 351 | energy resources | 1 | 24 | 1920 | 2367 |
| 351 | Fluorescence | 1 | 24 | 937 | 768 |
| 359 | Remote Sensing | 1 | 23 | 2260 | 1831 |
| 359 | Mineral resources | 2 | 23 | 839 | 1359 |
| 359 | Earth Sciences | 2 | 23 | 3320 | 3723 |
| 359 | Catalysts | 3 | 23 | 700 | 1114 |
| 363 | Flexible manufacturing systems | 1 | 22 | 785 | 904 |
| 363 | Friction | 1 | 22 | 251 | 346 |
| 365 | Pharmacy | 2 | 21 | 2081 | 2702 |
| 365 | Biomechanics | 2 | 21 | 1445 | 1911 |
| 365 | RNA | 1 | 21 | 754 | 912 |
| 368 | Materials Engineering | 1 | 20 | 1309 | 1223 |
| 368 | Cryptography | 6 | 20 | 391 | 813 |
| 368 | Nonlinear mechanics | 1 | 20 | 805 | 811 |
| 371 | Neurology | 3 | 19 | 3409 | 4725 |
| 371 | micromechanics | 2 | 19 | 741 | 1013 |
| 371 | Access to Information | 2 | 19 | 271 | 606 |
| 371 | big data | 2 | 19 | 844 | 1210 |
| 371 | Iron | 2 | 19 | 369 | 506 |
| 371 | Informatics | 1 | 19 | 1279 | 1392 |
| 371 | Information dissemination | 2 | 19 | 271 | 606 |
| 378 | Metabolism | 2 | 18 | 2123 | 2973 |
| 378 | complementary therapies | 1 | 18 | 2563 | 2776 |
| 378 | Enteral nutrition | 2 | 18 | 848 | 1347 |
| 378 | Parenteral nutrition | 2 | 18 | 969 | 1470 |
| 378 | Organometallic compounds | 2 | 18 | 1501 | 1894 |
| 378 | Enzyme | 1 | 18 | 894 | 1174 |
| 378 | enzymes | 1 | 18 | 1968 | 2234 |
| 385 | Engineering Geology | 1 | 17 | 1838 | 2003 |
| 385 | Calorimetry | 1 | 17 | 1850 | 1880 |
| 385 | amino acids | 2 | 17 | 716 | 1169 |
| 385 | Thermal analysis | 1 | 17 | 1850 | 1880 |
| 389 | Law | 1 | 16 | 1818 | 1276 |
| 389 | Medical Technology | 5 | 16 | 1104 | 2516 |
| 389 | Logistics | 3 | 16 | 567 | 1233 |
| 389 | Photography | 47 | 16 | 276 | 818 |
| 389 | Social Networks | 2 | 16 | 419 | 756 |
| 389 | Biological Systems | 1 | 16 | 959 | 1132 |
| 389 | Online social networks | 2 | 16 | 397 | 713 |
| 389 | Plasma polymerization | 1 | 16 | 447 | 528 |
| 389 | rehabilitation | 1 | 16 | 2777 | 3002 |
| 398 | Information Retrieval | 2 | 15 | 599 | 949 |
| 398 | Oxidative stress | 1 | 15 | 1282 | 1782 |
| 398 | plasma spraying | 1 | 15 | 406 | 505 |
| 398 | North America | 2 | 15 | 995 | 1374 |
| 398 | Continental shelf | 1 | 15 | 585 | 752 |
| 398 | cell physiology | 1 | 15 | 1694 | 2120 |
| 398 | Oxidation-reduction | 1 | 15 | 1072 | 1480 |
| 405 | Structural health monitoring | 1 | 14 | 374 | 538 |
| 405 | soil microbiology | 2 | 14 | 1565 | 2566 |
| 405 | structural stability | 1 | 14 | 514 | 719 |
| 405 | Chemical structure | 2 | 14 | 704 | 966 |
| 405 | Japan | 2 | 14 | 2098 | 2662 |
| 405 | Psychophysiology | 1 | 14 | 3049 | 3439 |
| 411 | Physical Geography | 1 | 13 | 866 | 1026 |
| 411 | Public Policy | 2 | 13 | 1977 | 2953 |
| 413 | Neurobiology | 1 | 12 | 1905 | 2343 |
| 413 | Municipal Engineering | 2 | 12 | 449 | 974 |
| 413 | Sustainable agriculture | 1 | 12 | 1277 | 1574 |
| 413 | Boundary Value Problems | 2 | 12 | 958 | 1273 |
| 413 | Database Security | 4 | 12 | 37 | 252 |
| 413 | Protective coatings | 1 | 12 | 356 | 376 |
| 413 | Zeolites | 1 | 12 | 1408 | 1832 |
| 413 | Stem cells | 1 | 12 | 1562 | 1930 |
| 413 | Agriculture | 1 | 12 | 2976 | 3262 |
| 422 | Sociology | 2 | 11 | 3374 | 4347 |
| 422 | Public Health | 1 | 11 | 5756 | 6142 |
| 422 | Functional Analysis | 3 | 11 | 1372 | 1885 |
| 422 | Statistical Mechanics | 1 | 11 | 960 | 993 |
| 422 | Inflammation | 2 | 11 | 1175 | 1949 |
| 422 | air quality | 1 | 11 | 544 | 810 |
| 422 | starch | 1 | 11 | 588 | 777 |
| 422 | Microscopy | 3 | 11 | 1370 | 2143 |
| 430 | Fuzzy Logic | 1 | 10 | 143 | 261 |
| 430 | Process Control | 2 | 10 | 1153 | 1948 |
| 430 | Fuzzy Sets | 1 | 10 | 143 | 261 |
| 430 | Immunochemistry | 2 | 10 | 1084 | 1658 |
| 430 | Social policy | 1 | 10 | 1627 | 1875 |
| 430 | economic analysis | 1 | 10 | 494 | 751 |
| 430 | Fuzzy algorithms | 1 | 10 | 143 | 261 |
| 430 | planning | 1 | 10 | 1337 | 1672 |
| 430 | World Wide Web | 1 | 10 | 829 | 887 |
| 430 | Economic planning | 1 | 10 | 947 | 1284 |
| 440 | Plant Ecology | 1 | 9 | 2305 | 2867 |
| 440 | Nuclear Fusion | 3 | 9 | 532 | 906 |
| 440 | Oncogenes | 1 | 9 | 1150 | 1573 |
| 440 | Calculus of Variations | 1 | 9 | 837 | 851 |
| 440 | Randomized Controlled Trials | 1 | 9 | 1372 | 1668 |
| 440 | East Asia | 2 | 9 | 828 | 1345 |
| 440 | fusion reactors | 3 | 9 | 378 | 667 |
| 447 | Clinical Trials | 1 | 8 | 742 | 972 |
| 447 | Soil Science | 1 | 8 | 2516 | 3026 |
| 447 | Environmental Geology | 1 | 8 | 2327 | 2880 |
| 447 | Phytochemistry | 1 | 8 | 634 | 995 |
| 447 | Economic Development | 2 | 8 | 1783 | 2712 |
| 447 | Research Design | 1 | 8 | 1621 | 2114 |
| 447 | Phytoremediation | 1 | 8 | 634 | 995 |
| 447 | environmental remediation | 1 | 8 | 757 | 1131 |
| 447 | Bioreactors | 1 | 8 | 634 | 995 |
| 447 | Drug delivery systems | 1 | 8 | 2097 | 2616 |
| 447 | Interferons | 1 | 8 | 478 | 672 |
| 447 | data collection | 1 | 8 | 1736 | 2314 |
| 447 | Wind power | 1 | 8 | 530 | 706 |
| 447 | Plant diseases | 1 | 8 | 2458 | 2867 |
| 447 | optical devices | 1 | 8 | 824 | 1068 |
| 447 | Cytokine | 1 | 8 | 624 | 935 |
| 447 | Developing countries | 2 | 8 | 2636 | 3779 |
| 447 | drug evaluation | 1 | 8 | 1739 | 2247 |
| 465 | Marine Biology | 1 | 7 | 3080 | 3750 |
| 465 | Cloud Computing | 1 | 7 | 646 | 1030 |
| 465 | food technology | 2 | 7 | 2749 | 3993 |
| 465 | Antenna Arrays | 1 | 7 | 834 | 1080 |
| 465 | infrared radiation | 3 | 7 | 615 | 1261 |
| 465 | Radiation | 3 | 7 | 2040 | 3297 |
| 465 | Health | 3 | 7 | 1915 | 3606 |
| 465 | Marine Pollution | 1 | 7 | 1805 | 2470 |
| 465 | Welding | 2 | 7 | 318 | 554 |
| 465 | Optoelectronic devices | 1 | 7 | 1553 | 1748 |
| 465 | Brain | 1 | 7 | 2878 | 3505 |
| 465 | Alloys | 2 | 7 | 382 | 598 |
| 465 | plasma | 3 | 7 | 104 | 281 |
| 465 | infrared technology | 3 | 7 | 204 | 399 |
| 479 | Oncology | 1 | 6 | 2454 | 3271 |
| 479 | Traffic Engineering | 2 | 6 | 547 | 1069 |
| 479 | Paleoclimatology | 2 | 6 | 1182 | 1887 |
| 479 | Paleoecology | 2 | 6 | 1157 | 1797 |
| 479 | Econometrics | 1 | 6 | 1933 | 2156 |
| 479 | Systems Analysis | 2 | 6 | 1418 | 2362 |
| 479 | Highway Engineering | 2 | 6 | 476 | 939 |
| 479 | Psychometrics | 2 | 6 | 511 | 874 |
| 479 | Green Technology | 1 | 6 | 862 | 1436 |
| 479 | Paleogeography | 2 | 6 | 1055 | 1662 |
| 479 | Soil biology | 1 | 6 | 1248 | 1757 |
| 479 | Gene expression regulation | 1 | 6 | 1349 | 1797 |
| 479 | Genetic regulation | 1 | 6 | 1425 | 1869 |
| 479 | food handling | 1 | 6 | 1515 | 2179 |
| 479 | protein | 1 | 6 | 1586 | 2017 |
| 479 | Solutions | 1 | 6 | 700 | 924 |
| 479 | probabilities | 3 | 6 | 1310 | 1851 |
| 479 | Mountains | 1 | 6 | 794 | 1046 |
| 479 | biopolymers | 2 | 6 | 1281 | 2067 |
| 479 | economic development projects | 1 | 6 | 392 | 686 |
| 479 | Cell metabolism | 1 | 6 | 987 | 1434 |
| 479 | Multiple sclerosis | 1 | 6 | 870 | 1109 |
| 501 | Geriatrics | 1 | 5 | 3379 | 3934 |
| 501 | Ethics | 1 | 5 | 1525 | 1985 |
| 501 | Higher Education | 1 | 5 | 1101 | 1502 |
| 501 | Kinetics | 1 | 5 | 902 | 1284 |
| 501 | Algorithms | 2 | 5 | 918 | 1502 |
| 501 | Physical organic chemistry | 1 | 5 | 1908 | 2388 |
| 501 | Anti-inflammatory agents | 1 | 5 | 512 | 858 |
| 501 | greenhouse effect | 1 | 5 | 137 | 321 |
| 501 | Medical Ethics | 1 | 5 | 1626 | 2027 |
| 501 | Machining | 1 | 5 | 306 | 445 |
| 501 | global environmental change | 1 | 5 | 1242 | 1927 |
| 501 | Sound | 1 | 5 | 1565 | 1823 |
| 501 | Biometrics | 1 | 5 | 1385 | 1730 |
| 501 | Carbon dioxide | 1 | 5 | 137 | 321 |
| 501 | body temperature | 1 | 5 | 988 | 1497 |
| 501 | Climate | 1 | 5 | 1028 | 1594 |
| 501 | Instructional systems | 1 | 5 | 344 | 635 |
| 518 | Engineering Mathematics | 2 | 4 | 2184 | 3029 |
| 518 | Genetic engineering | 1 | 4 | 2530 | 3276 |
| 518 | Quality Management | 1 | 4 | 376 | 619 |
| 518 | Clinical Immunology | 1 | 4 | 1218 | 1672 |
| 518 | Immunopathology | 1 | 4 | 1360 | 1847 |
| 518 | Organizational change | 1 | 4 | 1261 | 1827 |
| 518 | Molecular cloning | 1 | 4 | 1948 | 2593 |
| 518 | Mass Spectrometry | 1 | 4 | 1512 | 2012 |
| 518 | Genetic recombination | 1 | 4 | 1916 | 2569 |
| 518 | Fixed Point Theory | 1 | 4 | 582 | 688 |
| 518 | innovation | 1 | 4 | 1017 | 1534 |
| 518 | Classification | 1 | 4 | 554 | 756 |
| 518 | Biomolecules | 1 | 4 | 760 | 1218 |
| 518 | place marketing | 1 | 4 | 245 | 576 |
| 518 | Recombinant DNA | 1 | 4 | 1994 | 2657 |
| 533 | Architectural Design | 1 | 3 | 818 | 1178 |
| 533 | gene therapy | 1 | 3 | 1206 | 1766 |
| 533 | X-rays | 2 | 3 | 661 | 1136 |
| 533 | Vocational guidance | 1 | 3 | 1389 | 1944 |
| 533 | Nuclear Facilities | 3 | 3 | 6 | 41 |
| 533 | Genetic therapy | 1 | 3 | 1206 | 1731 |
| 533 | Refractory materials | 1 | 3 | 271 | 374 |
| 533 | gene transfer | 1 | 3 | 451 | 735 |
| 533 | Biodiversity | 1 | 3 | 2943 | 3817 |
| 533 | genetic transformation | 1 | 3 | 451 | 735 |
| 543 | Pathology | 1 | 2 | 2181 | 3003 |
| 543 | Integrated Circuits | 1 | 2 | 1247 | 1571 |
| 543 | Soft Condensed Matter | 1 | 2 | 1497 | 2042 |
| 543 | Korea | 1 | 2 | 706 | 1053 |
| 543 | Ultrasonic Imaging | 1 | 2 | 837 | 1289 |
| 543 | Africa | 1 | 2 | 2370 | 3052 |
| 543 | Soviet Union | 1 | 2 | 1254 | 1679 |
| 543 | Ultrasound | 1 | 2 | 1071 | 1615 |
| 543 | Muscle contraction | 1 | 2 | 694 | 974 |
| 543 | Liver diseases | 1 | 2 | 1411 | 1983 |
| 553 | Radiology | 1 | 1 | 1722 | 2400 |
| 553 | Applied Mathematics | 1 | 1 | 581 | 765 |
| 553 | Clinical Pharmacology | 1 | 1 | 1609 | 2282 |
| 553 | Sedimentology | 1 | 1 | 995 | 1548 |
| 553 | Computational Linguistics | 2 | 1 | 741 | 1662 |
| 553 | Liquid Crystals | 1 | 1 | 1305 | 1722 |
| 553 | soil pollution | 1 | 1 | 1068 | 1706 |
| 553 | Crystallography | 1 | 1 | 2184 | 2614 |
| 553 | visualization | 2 | 1 | 1579 | 2360 |
| 553 | particles | 1 | 1 | 1644 | 2346 |
| 553 | food industry | 1 | 1 | 1412 | 2202 |
| 553 | data protection | 2 | 1 | 787 | 1655 |
| 565 | Software Engineering | 1 | 0 | 1457 | 2107 |
| 565 | Meteorology | 1 | 0 | 2688 | 3737 |
| 565 | International Relations | 1 | 0 | 1526 | 2100 |
| 565 | Sports Medicine | 1 | 0 | 3035 | 3864 |
| 565 | Operator theory | 2 | 0 | 594 | 1187 |
| 565 | Powder Metallurgy | 1 | 0 | 434 | 758 |
| 565 | Functional foods | 1 | 0 | 699 | 1252 |
| 565 | dietary supplements | 1 | 0 | 1440 | 2284 |
| 565 | Sintering | 1 | 0 | 92 | 230 |
| 565 | Sports | 1 | 0 | 2723 | 3432 |
| 565 | Food | 1 | 0 | 3788 | 5033 |
| 565 | nuclear power | 1 | 0 | 745 | 1122 |
| 565 | Electromagnetic fields | 1 | 0 | 724 | 1148 |
| 565 | Microwaves | 1 | 0 | 1741 | 2295 |
| 565 | Exercise | 1 | 0 | 2186 | 3015 |