| 1 | Materials | 427 | 15.1K | 450 | 505 |
| 2 | Chemistry | 289 | 8.8K | 1321 | 1607 |
| 3 | Nanotechnology | 159 | 7.7K | 718 | 703 |
| 4 | Materials Science | 246 | 6.3K | 413 | 616 |
| 5 | Chemical Engineering | 163 | 6.3K | 589 | 608 |
| 6 | Optical materials | 56 | 5.1K | 559 | 290 |
| 7 | Electrochemistry | 145 | 4.5K | 563 | 460 |
| 8 | coal | 125 | 3.9K | 69 | 104 |
| 9 | nanoscience | 65 | 3.8K | 581 | 520 |
| 10 | Biocompatible Materials | 67 | 3.4K | 916 | 896 |
| 11 | Biochemical Engineering | 69 | 3.3K | 576 | 851 |
| 12 | Catalysis | 89 | 3.2K | 827 | 904 |
| 13 | Physics | 167 | 3.0K | 1903 | 3772 |
| 14 | Analytical Chemistry | 98 | 2.9K | 848 | 863 |
| 15 | Mathematics | 147 | 2.8K | 1109 | 790 |
| 16 | Nanostructured Materials | 72 | 2.7K | 686 | 641 |
| 17 | Biomedical Engineering | 83 | 2.5K | 898 | 908 |
| 18 | Green Chemistry | 40 | 2.5K | 361 | 321 |
| 19 | Composite Materials | 81 | 2.3K | 420 | 589 |
| 20 | Metallurgy | 168 | 2.2K | 211 | 422 |
| 21 | Sustainable Engineering | 34 | 2.1K | 332 | 233 |
| 22 | health planning | 54 | 2.0K | 270 | 157 |
| 23 | Neural circuitry | 48 | 1.7K | 266 | 297 |
| 24 | Systems Engineering | 76 | 1.6K | 172 | 184 |
| 25 | Surface Chemistry | 75 | 1.6K | 819 | 1134 |
| 25 | Energy Conversion | 17 | 1.6K | 528 | 478 |
| 27 | fuel cells | 24 | 1.5K | 407 | 378 |
| 28 | Environment | 40 | 1.5K | 1614 | 2269 |
| 29 | Environmental Chemistry | 11 | 1.5K | 1253 | 654 |
| 30 | China | 62 | 1.5K | 492 | 391 |
| 31 | Biomass Energy | 37 | 1.4K | 617 | 741 |
| 32 | Energy Policy | 53 | 1.4K | 423 | 771 |
| 33 | Colloids | 60 | 1.4K | 961 | 1291 |
| 34 | Pollution | 34 | 1.3K | 2065 | 2320 |
| 35 | Iron | 142 | 1.3K | 26 | 54 |
| 36 | Metals | 80 | 1.3K | 370 | 594 |
| 37 | Artificial Intelligence | 59 | 1.2K | 779 | 944 |
| 38 | Ecology | 28 | 1.2K | 2828 | 2953 |
| 39 | environmental pollution | 33 | 1.2K | 1607 | 1744 |
| 40 | Control Theory | 59 | 1.2K | 263 | 291 |
| 41 | vibration | 19 | 1.1K | 432 | 209 |
| 42 | Automation | 38 | 1.1K | 391 | 462 |
| 43 | Structural dynamics | 13 | 1.1K | 498 | 265 |
| 44 | Renewable Energy Sources | 25 | 1.1K | 773 | 1218 |
| 45 | Carbon | 19 | 1.1K | 501 | 488 |
| 46 | actuators | 23 | 1.0K | 775 | 682 |
| 46 | transducers | 23 | 1.0K | 775 | 682 |
| 48 | Environmental Health | 26 | 968 | 2338 | 2398 |
| 49 | Ceramic materials | 51 | 944 | 164 | 246 |
| 50 | Optics | 53 | 939 | 1464 | 1399 |
| 51 | Cybernetics | 25 | 932 | 346 | 308 |
| 52 | Combustion | 35 | 910 | 303 | 342 |
| 53 | Biology | 29 | 907 | 4930 | 6155 |
| 54 | Polymers | 62 | 881 | 1323 | 1826 |
| 55 | Ceramics | 42 | 879 | 301 | 401 |
| 56 | Manufacturing Processes | 43 | 849 | 507 | 680 |
| 57 | Tribology | 34 | 846 | 229 | 249 |
| 58 | Environmental Management | 22 | 807 | 1069 | 1289 |
| 59 | Magnetic Materials | 15 | 785 | 704 | 440 |
| 60 | Biochemistry | 36 | 778 | 4154 | 4779 |
| 61 | Electronics | 39 | 769 | 1164 | 1065 |
| 62 | Science | 43 | 764 | 4318 | 6991 |
| 63 | Nanoparticles | 38 | 755 | 381 | 693 |
| 64 | Research | 28 | 696 | 4494 | 4950 |
| 65 | Measurement | 25 | 680 | 280 | 240 |
| 66 | Statistical physics | 55 | 620 | 1142 | 1593 |
| 67 | Heat Exchangers | 20 | 619 | 341 | 440 |
| 68 | Biotechnology | 28 | 608 | 2770 | 3730 |
| 69 | Building Materials | 26 | 606 | 507 | 839 |
| 70 | particles | 16 | 598 | 265 | 178 |
| 71 | Molecular Biology | 27 | 584 | 4113 | 5426 |
| 72 | Industrial Engineering | 20 | 571 | 684 | 652 |
| 73 | Metallography | 30 | 570 | 138 | 195 |
| 74 | Energy Storage | 20 | 561 | 416 | 525 |
| 75 | Solid State Chemistry | 36 | 560 | 784 | 974 |
| 75 | Technology | 39 | 560 | 1262 | 1700 |
| 77 | Mechanical Engineering | 48 | 554 | 536 | 680 |
| 77 | Organic Chemistry | 20 | 554 | 1646 | 1631 |
| 79 | Nonlinear systems | 23 | 548 | 115 | 122 |
| 80 | Nonlinear functional analysis | 10 | 545 | 645 | 278 |
| 81 | Bioengineering | 24 | 520 | 1911 | 2960 |
| 82 | Luminescence | 37 | 514 | 192 | 296 |
| 83 | Information Science | 19 | 510 | 956 | 1062 |
| 84 | Computational Biology | 14 | 500 | 1607 | 1564 |
| 85 | Production Engineering | 32 | 498 | 495 | 600 |
| 86 | polymerization | 41 | 494 | 1395 | 1993 |
| 87 | Bioorganic chemistry | 16 | 489 | 1548 | 1603 |
| 88 | System analysis | 20 | 482 | 963 | 902 |
| 89 | Spectrum analysis | 42 | 480 | 1582 | 2463 |
| 90 | Nanochemistry | 20 | 473 | 275 | 259 |
| 91 | mass transfer | 20 | 458 | 643 | 794 |
| 92 | environmental protection | 17 | 456 | 1673 | 1955 |
| 93 | pottery | 27 | 450 | 326 | 557 |
| 94 | Glass | 27 | 445 | 327 | 572 |
| 95 | Telecommunication Systems | 16 | 440 | 600 | 454 |
| 96 | Japan | 42 | 439 | 457 | 582 |
| 97 | Robotics | 26 | 433 | 472 | 675 |
| 98 | Semiconductors | 14 | 422 | 1039 | 748 |
| 99 | Pharmaceutical Chemistry | 11 | 419 | 2792 | 2594 |
| 100 | Solid State Physics | 45 | 415 | 1456 | 2092 |
| 101 | Granular materials | 11 | 400 | 179 | 143 |
| 102 | Nervous system | 9 | 379 | 1884 | 1947 |
| 103 | Membranes | 6 | 370 | 1582 | 1298 |
| 104 | Organometallic chemistry | 37 | 368 | 389 | 768 |
| 105 | Engineering | 38 | 355 | 1270 | 1956 |
| 106 | energy conservation | 13 | 354 | 888 | 1295 |
| 107 | lasers | 19 | 351 | 716 | 678 |
| 108 | Environmental monitoring | 13 | 336 | 2332 | 2930 |
| 109 | Water pollution | 17 | 326 | 1325 | 2056 |
| 109 | nucleic acids | 2 | 326 | 2582 | 1648 |
| 111 | Electrochemical Analysis | 21 | 323 | 538 | 799 |
| 112 | Structural Engineering | 25 | 311 | 568 | 808 |
| 113 | Calorimetry | 17 | 310 | 355 | 377 |
| 113 | Thermal analysis | 17 | 310 | 355 | 377 |
| 115 | Medicine | 21 | 308 | 6395 | 8935 |
| 116 | Nanostructures | 21 | 303 | 784 | 1553 |
| 117 | Environmental Engineering | 17 | 298 | 1926 | 2814 |
| 118 | Environmental Policy | 11 | 295 | 1983 | 2710 |
| 119 | Water | 7 | 290 | 1984 | 2134 |
| 120 | Bioinformatics | 11 | 282 | 1327 | 1639 |
| 121 | Computational Intelligence | 11 | 276 | 338 | 262 |
| 121 | miniaturization | 11 | 276 | 1115 | 1593 |
| 123 | Biomass | 5 | 260 | 492 | 510 |
| 124 | Engineering Geology | 6 | 259 | 1131 | 933 |
| 125 | Condensed Matter | 32 | 258 | 1566 | 2288 |
| 126 | Detectors | 15 | 244 | 263 | 221 |
| 127 | Clinical Chemistry | 5 | 242 | 3095 | 2595 |
| 128 | Microelectronics | 5 | 240 | 1730 | 1474 |
| 129 | Biophysics | 7 | 232 | 5208 | 4785 |
| 129 | machinery | 14 | 232 | 263 | 339 |
| 131 | Mathematical Physics | 33 | 226 | 1061 | 1714 |
| 132 | Signal Processing | 29 | 219 | 527 | 1131 |
| 133 | Chemical analysis | 11 | 213 | 658 | 853 |
| 134 | Information Technology | 13 | 212 | 1261 | 1377 |
| 135 | Entropy | 15 | 211 | 323 | 408 |
| 136 | pigments | 13 | 209 | 316 | 497 |
| 137 | Ocean Engineering | 15 | 207 | 778 | 1227 |
| 138 | Fuzzy systems | 21 | 202 | 446 | 725 |
| 139 | Nonlinear Dynamics | 16 | 201 | 1188 | 1583 |
| 140 | Process Control | 2 | 194 | 1225 | 890 |
| 141 | Computational Complexity | 8 | 192 | 609 | 398 |
| 142 | Adaptive control systems | 22 | 186 | 99 | 237 |
| 143 | Metallic Glasses | 10 | 182 | 208 | 331 |
| 143 | Plastics | 10 | 182 | 1037 | 1135 |
| 145 | Mechatronics | 10 | 181 | 309 | 367 |
| 146 | Biosensors | 3 | 170 | 1532 | 1577 |
| 146 | Bioelectronics | 3 | 170 | 1313 | 1422 |
| 148 | Chemical processes | 9 | 169 | 327 | 378 |
| 149 | Hazardous waste | 8 | 162 | 535 | 1102 |
| 150 | Numerical Analysis | 12 | 161 | 1364 | 1470 |
| 151 | radioactive waste | 7 | 159 | 469 | 1044 |
| 151 | industrial waste | 7 | 159 | 502 | 1040 |
| 153 | Industrial Safety | 4 | 158 | 1221 | 854 |
| 154 | Radiation | 4 | 157 | 2432 | 1683 |
| 155 | radiative transfer | 3 | 154 | 723 | 419 |
| 156 | Engineering Mathematics | 22 | 152 | 923 | 1491 |
| 157 | Fluid Mechanics | 12 | 150 | 1007 | 1310 |
| 157 | Nuclear Physics | 7 | 150 | 3544 | 3266 |
| 157 | energy resources | 1 | 150 | 2487 | 1803 |
| 160 | Mineralogy | 16 | 144 | 676 | 1157 |
| 161 | Multimedia Systems | 10 | 141 | 925 | 987 |
| 162 | Business | 2 | 140 | 3073 | 2041 |
| 163 | Electrical Engineering | 13 | 136 | 2090 | 1998 |
| 164 | Fractals | 8 | 135 | 775 | 919 |
| 165 | plasticity | 3 | 130 | 351 | 464 |
| 165 | computer networks | 17 | 130 | 1070 | 1940 |
| 167 | Zeolites | 4 | 129 | 913 | 1048 |
| 168 | Intercultural Communication | 2 | 127 | 534 | 297 |
| 168 | Cross-Cultural Studies | 2 | 127 | 1009 | 524 |
| 168 | Refractory materials | 24 | 127 | 25 | 20 |
| 171 | Analytical Biochemistry | 5 | 126 | 1695 | 1785 |
| 172 | sanitation | 2 | 125 | 2265 | 2341 |
| 172 | Mycology | 5 | 125 | 1603 | 1718 |
| 172 | Fungi | 5 | 125 | 983 | 1226 |
| 175 | Earthquake Engineering | 8 | 122 | 879 | 1213 |
| 176 | Fracture mechanics | 11 | 121 | 817 | 1266 |
| 177 | Waste management | 11 | 117 | 731 | 1168 |
| 178 | carbon monoxide | 6 | 116 | 156 | 412 |
| 179 | Water Purification | 10 | 115 | 603 | 957 |
| 179 | Water quality management | 10 | 115 | 1095 | 1656 |
| 181 | concrete | 10 | 113 | 561 | 1238 |
| 182 | Energy Harvesting | 2 | 111 | 625 | 761 |
| 182 | Chemical industry | 27 | 111 | 343 | 1044 |
| 184 | Solar Energy | 5 | 110 | 1570 | 2020 |
| 185 | Pediatrics | 1 | 109 | 5114 | 3387 |
| 186 | rehabilitation | 4 | 107 | 2492 | 2486 |
| 187 | Materials Engineering | 7 | 101 | 414 | 477 |
| 187 | Soft Condensed Matter | 2 | 101 | 1501 | 1206 |
| 187 | biopolymers | 2 | 101 | 1673 | 1336 |
| 190 | Photonics | 8 | 100 | 1259 | 2013 |
| 191 | Astronomy | 5 | 96 | 2696 | 3123 |
| 192 | clay | 4 | 92 | 755 | 1104 |
| 193 | Civil Engineering | 20 | 91 | 579 | 1129 |
| 193 | Behavior | 3 | 91 | 4034 | 4496 |
| 195 | Solitons | 4 | 90 | 1037 | 1054 |
| 195 | Chaos | 4 | 90 | 1037 | 1054 |
| 195 | supercritical fluids | 5 | 90 | 303 | 493 |
| 198 | solar power | 4 | 89 | 795 | 1200 |
| 198 | solar cells | 4 | 89 | 906 | 1329 |
| 200 | plasma spraying | 5 | 86 | 197 | 266 |
| 201 | Image Processing | 10 | 84 | 1249 | 2290 |
| 201 | Social Change | 2 | 84 | 1390 | 1461 |
| 201 | amino acids | 3 | 84 | 709 | 831 |
| 204 | Computer Engineering | 6 | 82 | 525 | 711 |
| 204 | marketing | 3 | 82 | 2128 | 2063 |
| 206 | Dynamics | 14 | 81 | 885 | 1566 |
| 206 | Organometallic compounds | 7 | 81 | 915 | 1345 |
| 208 | Mobile Computing | 7 | 80 | 754 | 956 |
| 208 | Power Electronics | 7 | 80 | 427 | 653 |
| 208 | Wireless Communication Systems | 6 | 80 | 1703 | 1832 |
| 208 | Fluorescence | 3 | 80 | 507 | 381 |
| 212 | Information Theory | 14 | 76 | 524 | 1272 |
| 212 | Rock Mechanics | 2 | 76 | 1230 | 1064 |
| 212 | Herbal medicine | 1 | 76 | 1534 | 1178 |
| 215 | Environmental Toxicology | 4 | 74 | 2639 | 3735 |
| 215 | Fluid Dynamics | 9 | 74 | 750 | 1314 |
| 217 | Plasma chemistry | 8 | 73 | 221 | 486 |
| 218 | Computer Vision | 3 | 71 | 1375 | 1694 |
| 218 | Molecular Spectroscopy | 6 | 71 | 1519 | 2150 |
| 220 | Structural optimization | 3 | 70 | 385 | 446 |
| 221 | Bioinorganic chemistry | 6 | 68 | 1187 | 1834 |
| 222 | Thermodynamics | 15 | 67 | 457 | 1035 |
| 222 | Agricultural Chemistry | 2 | 67 | 3305 | 3091 |
| 222 | Molecular structure | 8 | 67 | 1874 | 3047 |
| 225 | Cognitive Science | 7 | 66 | 1076 | 2153 |
| 225 | Alloys | 16 | 66 | 61 | 168 |
| 227 | health services accessibility | 1 | 64 | 2114 | 1293 |
| 227 | Socioeconomic Factors | 1 | 64 | 1731 | 1185 |
| 229 | Cognitive neuroscience | 4 | 63 | 994 | 1505 |
| 229 | Crystallography | 22 | 63 | 672 | 1425 |
| 229 | reasoning | 2 | 63 | 559 | 460 |
| 232 | Structural design | 6 | 62 | 599 | 1018 |
| 232 | Stochastic Processes | 4 | 62 | 893 | 935 |
| 234 | Systems Analysis | 4 | 61 | 1115 | 1334 |
| 234 | Regional Planning | 3 | 61 | 1829 | 1837 |
| 234 | Intelligent Control Systems | 11 | 61 | 478 | 935 |
| 237 | Hydrogeology | 3 | 60 | 822 | 884 |
| 237 | Astrophysics | 5 | 60 | 3053 | 3649 |
| 237 | Geothermal Energy | 3 | 60 | 282 | 367 |
| 237 | India | 3 | 60 | 2241 | 1199 |
| 241 | Smart Materials | 4 | 58 | 912 | 1209 |
| 242 | Multilingualism | 1 | 57 | 576 | 349 |
| 242 | soil pollution | 3 | 57 | 642 | 773 |
| 242 | cultural pluralism | 1 | 57 | 793 | 429 |
| 245 | Nondestructive testing | 5 | 55 | 584 | 854 |
| 245 | Physical organic chemistry | 6 | 55 | 1159 | 1828 |
| 247 | Asia | 6 | 54 | 2412 | 3160 |
| 248 | Electromagnetism | 2 | 53 | 1101 | 814 |
| 249 | Evolutionary Computation | 3 | 52 | 400 | 634 |
| 249 | Swarm Intelligence | 3 | 52 | 268 | 481 |
| 249 | Plasma polymerization | 5 | 52 | 202 | 403 |
| 249 | environmental exposure | 3 | 52 | 2457 | 3246 |
| 249 | language | 2 | 52 | 1104 | 1119 |
| 254 | Statistics | 9 | 51 | 1969 | 3033 |
| 254 | Aerosols | 5 | 51 | 527 | 849 |
| 254 | Investment analysis | 4 | 51 | 742 | 1071 |
| 254 | bioluminescence | 5 | 51 | 249 | 366 |
| 258 | Nuclear Engineering | 6 | 50 | 1064 | 1298 |
| 259 | Microbiology | 5 | 49 | 6690 | 9748 |
| 259 | electric vehicles | 1 | 49 | 447 | 282 |
| 259 | management | 7 | 49 | 2679 | 4455 |
| 262 | Intelligent Transportation Systems | 3 | 48 | 850 | 1045 |
| 262 | Hydrodynamics | 1 | 48 | 1067 | 928 |
| 264 | Systems Biology | 2 | 47 | 2534 | 2820 |
| 264 | Climate change | 1 | 47 | 1970 | 2406 |
| 264 | Biodiversity conservation | 1 | 47 | 2983 | 3057 |
| 264 | Eutrophication | 1 | 47 | 1815 | 2331 |
| 264 | Auditing | 2 | 47 | 508 | 538 |
| 264 | cell physiology | 2 | 47 | 2275 | 2935 |
| 270 | soil conservation | 3 | 46 | 914 | 1335 |
| 270 | probabilities | 5 | 46 | 1164 | 1230 |
| 270 | Catalysts | 6 | 46 | 500 | 983 |
| 273 | structural stability | 4 | 45 | 435 | 699 |
| 273 | internet | 3 | 45 | 1433 | 1664 |
| 275 | air quality management | 3 | 44 | 604 | 1081 |
| 275 | Chemical kinetics | 7 | 44 | 474 | 803 |
| 277 | Algebra | 8 | 43 | 1127 | 1261 |
| 277 | Internet of Things | 2 | 43 | 938 | 964 |
| 277 | Operations Research | 4 | 43 | 2264 | 2832 |
| 277 | Supramolecular chemistry | 5 | 43 | 165 | 271 |
| 281 | Nanotubes | 6 | 42 | 105 | 189 |
| 282 | Computer Graphics | 3 | 41 | 1941 | 2310 |
| 283 | Computer Science | 8 | 40 | 1543 | 2789 |
| 283 | Applied Mathematics | 13 | 40 | 326 | 671 |
| 283 | Visual Communication | 2 | 40 | 683 | 602 |
| 283 | infrared radiation | 8 | 40 | 348 | 845 |
| 283 | Image enhancement | 2 | 40 | 470 | 548 |
| 283 | Mechanics | 7 | 40 | 979 | 1592 |
| 283 | Communication | 2 | 40 | 2995 | 2767 |
| 283 | Porous materials | 4 | 40 | 735 | 1029 |
| 291 | Hypertension | 1 | 39 | 3111 | 3230 |
| 291 | Structural health monitoring | 3 | 39 | 225 | 431 |
| 291 | finance | 2 | 39 | 3082 | 2812 |
| 294 | Medical Laboratory Science | 2 | 38 | 3180 | 3904 |
| 295 | Lightweight concrete | 1 | 37 | 776 | 1032 |
| 295 | Decision making | 7 | 37 | 1060 | 2541 |
| 297 | Nanomedicine | 3 | 36 | 238 | 648 |
| 297 | Health | 1 | 36 | 4857 | 4205 |
| 299 | Industrial Microbiology | 2 | 35 | 2844 | 3793 |
| 299 | city planning | 2 | 35 | 2301 | 2442 |
| 301 | Soil Science | 1 | 34 | 3275 | 3054 |
| 301 | mathematical analysis | 16 | 34 | 1362 | 2562 |
| 303 | Neuroplasticity | 1 | 33 | 876 | 879 |
| 303 | human development | 1 | 33 | 1456 | 1461 |
| 305 | Nuclear Fusion | 3 | 32 | 742 | 890 |
| 305 | indoor air pollution | 2 | 32 | 604 | 907 |
| 305 | Ventilation | 2 | 32 | 816 | 1059 |
| 305 | Sick building syndrome | 2 | 32 | 604 | 907 |
| 305 | fusion reactors | 3 | 32 | 550 | 574 |
| 310 | Statistical Mechanics | 7 | 31 | 882 | 1413 |
| 310 | Crystal growth | 5 | 31 | 924 | 1763 |
| 310 | clay minerals | 2 | 31 | 413 | 632 |
| 313 | atmospheric models | 1 | 30 | 1239 | 1359 |
| 314 | Data Mining | 2 | 29 | 2629 | 3419 |
| 314 | Information Retrieval | 1 | 29 | 1010 | 916 |
| 314 | Biomechanics | 4 | 29 | 1590 | 2754 |
| 314 | Mineral resources | 2 | 29 | 823 | 1297 |
| 318 | World Wide Web | 1 | 28 | 973 | 608 |
| 319 | Cognitive Radio Networks | 1 | 27 | 186 | 175 |
| 319 | Multiphase Flow | 2 | 27 | 529 | 798 |
| 319 | biological factors | 2 | 27 | 2830 | 3580 |
| 319 | Muscle contraction | 4 | 27 | 267 | 356 |
| 323 | Ergonomics | 3 | 26 | 1295 | 1809 |
| 323 | Optoelectronics | 7 | 26 | 342 | 762 |
| 323 | Soil dynamics | 1 | 26 | 871 | 925 |
| 323 | soil microbiology | 1 | 26 | 2781 | 3438 |
| 323 | Molecular evolution | 1 | 26 | 3344 | 3665 |
| 323 | Friction | 2 | 26 | 150 | 341 |
| 323 | Plant diseases | 1 | 26 | 3322 | 3099 |
| 330 | Quantum Chemistry | 2 | 25 | 1331 | 1323 |
| 330 | Photochemistry | 5 | 25 | 1714 | 3455 |
| 330 | Quality Assurance | 4 | 25 | 317 | 816 |
| 330 | Photobiology | 5 | 25 | 1266 | 2767 |
| 334 | Ecological Engineering | 1 | 24 | 1343 | 1757 |
| 334 | Urban Policy | 1 | 24 | 1536 | 1727 |
| 334 | Central Asia | 2 | 24 | 338 | 455 |
| 334 | software | 1 | 24 | 2018 | 2218 |
| 334 | Chemical reactors | 5 | 24 | 32 | 72 |
| 339 | Surface-Active Agents | 1 | 23 | 2097 | 2589 |
| 339 | Microfluidics | 2 | 23 | 340 | 604 |
| 339 | Surface properties | 1 | 23 | 2208 | 2697 |
| 339 | Tunneling | 1 | 23 | 623 | 794 |
| 339 | underground construction | 1 | 23 | 623 | 794 |
| 344 | Animal Behavior | 4 | 22 | 2040 | 3959 |
| 344 | Nanobiotechnology | 1 | 22 | 925 | 1392 |
| 344 | Drying | 2 | 22 | 553 | 860 |
| 344 | Microstructure | 1 | 22 | 1757 | 1500 |
| 344 | biological monitoring | 2 | 22 | 784 | 1433 |
| 344 | Plasma devices | 2 | 22 | 456 | 676 |
| 350 | Raman spectroscopy | 2 | 21 | 1203 | 1824 |
| 350 | Ultrasonics | 3 | 21 | 1267 | 2526 |
| 350 | Atomic spectroscopy | 2 | 21 | 1642 | 2047 |
| 353 | Pharmacology | 2 | 20 | 7617 | 9588 |
| 353 | Pharmacy | 2 | 20 | 3269 | 4422 |
| 353 | Toxicology | 1 | 20 | 8176 | 8814 |
| 353 | Epidemiology | 2 | 20 | 5951 | 7845 |
| 353 | Medical Technology | 2 | 20 | 2990 | 4247 |
| 353 | Economics | 6 | 20 | 3730 | 5708 |
| 353 | Public Health | 2 | 20 | 8911 | 10919 |
| 353 | Pharmaceutical Technology | 2 | 20 | 2185 | 3162 |
| 353 | Pharmacokinetics | 2 | 20 | 1501 | 2239 |
| 353 | pollutants | 1 | 20 | 3527 | 4178 |
| 353 | Korea | 1 | 20 | 833 | 637 |
| 353 | Environmental pollutants | 1 | 20 | 4162 | 4760 |
| 353 | Earth Sciences | 3 | 20 | 3838 | 5321 |
| 353 | drugs | 2 | 20 | 3427 | 4694 |
| 367 | Physical Geography | 1 | 19 | 1199 | 1135 |
| 367 | Electrophoresis | 1 | 19 | 3159 | 3585 |
| 367 | micromechanics | 3 | 19 | 697 | 1348 |
| 367 | Chromatography | 1 | 19 | 3141 | 3419 |
| 367 | Eastern Europe | 2 | 19 | 1487 | 1357 |
| 367 | textile fibers | 1 | 19 | 1069 | 893 |
| 367 | Chromatographic analysis | 1 | 19 | 3573 | 3700 |
| 367 | Textile industry | 1 | 19 | 1210 | 861 |
| 375 | Nuclear Energy | 3 | 18 | 1391 | 1801 |
| 375 | Sonochemistry | 2 | 18 | 866 | 1799 |
| 375 | mycoses | 2 | 18 | 1364 | 2257 |
| 378 | Sedimentology | 1 | 17 | 1258 | 1479 |
| 378 | Fiber Optics | 2 | 17 | 742 | 895 |
| 378 | East Asia | 3 | 17 | 731 | 1190 |
| 378 | extraterrestrial environment | 1 | 17 | 1340 | 1368 |
| 378 | astronomical phenomena | 1 | 17 | 1240 | 1250 |
| 378 | impact | 2 | 17 | 487 | 883 |
| 384 | Optical Communications | 1 | 16 | 1256 | 1222 |
| 385 | Hydraulic Engineering | 3 | 15 | 1132 | 1976 |
| 385 | global environmental change | 1 | 15 | 1721 | 2338 |
| 385 | Welding | 5 | 15 | 251 | 484 |
| 385 | Electromagnetic fields | 1 | 15 | 731 | 543 |
| 385 | energy development | 2 | 15 | 1300 | 2340 |
| 385 | synthesis | 1 | 15 | 1950 | 1924 |
| 385 | environmental issues | 1 | 15 | 976 | 1346 |
| 392 | Graph Theory | 1 | 14 | 1435 | 1129 |
| 392 | Geochemistry | 1 | 14 | 3416 | 4075 |
| 392 | Cosmochemistry | 1 | 14 | 1692 | 2175 |
| 392 | Biodiversity | 6 | 14 | 2007 | 4760 |
| 396 | Social Sciences | 4 | 13 | 4056 | 6352 |
| 396 | Humanities | 4 | 13 | 1918 | 3156 |
| 396 | Sociology | 4 | 13 | 3306 | 6297 |
| 396 | Geology | 1 | 13 | 4974 | 5242 |
| 396 | Soil Mechanics | 3 | 13 | 1289 | 2170 |
| 396 | Organizational Sociology | 1 | 13 | 669 | 800 |
| 396 | Alternative Medicine | 2 | 13 | 2845 | 4519 |
| 396 | Evidence-Based Medicine | 1 | 13 | 2746 | 3139 |
| 396 | complementary therapies | 1 | 13 | 4104 | 4797 |
| 396 | Molecules | 4 | 13 | 1641 | 2695 |
| 396 | Telecommunication | 4 | 13 | 2398 | 3921 |
| 396 | organization | 1 | 13 | 1423 | 1761 |
| 396 | Europe | 1 | 13 | 6532 | 6467 |
| 396 | aerosol | 2 | 13 | 598 | 961 |
| 410 | Urban Planning | 1 | 12 | 802 | 1084 |
| 410 | Climatology | 2 | 12 | 2506 | 3876 |
| 410 | community development | 1 | 12 | 1205 | 1337 |
| 410 | Green Technology | 2 | 12 | 686 | 1381 |
| 410 | Adhesion | 2 | 12 | 1021 | 1660 |
| 410 | Housing | 1 | 12 | 956 | 1267 |
| 410 | Combinatorial analysis | 1 | 12 | 1789 | 1490 |
| 410 | Population | 1 | 12 | 2266 | 2543 |
| 410 | adhesives | 2 | 12 | 1085 | 1690 |
| 419 | Psychiatry | 1 | 11 | 7911 | 8912 |
| 419 | Sustainable Architecture | 2 | 11 | 239 | 448 |
| 419 | Fuzzy Logic | 1 | 11 | 294 | 400 |
| 419 | Quality Control | 1 | 11 | 3606 | 4355 |
| 419 | food technology | 1 | 11 | 4516 | 5574 |
| 419 | Fuzzy Sets | 1 | 11 | 150 | 259 |
| 419 | food handling | 1 | 11 | 1806 | 2598 |
| 419 | peptides | 2 | 11 | 1420 | 2315 |
| 419 | Fuzzy algorithms | 1 | 11 | 150 | 259 |
| 419 | Mental illness | 1 | 11 | 4008 | 5002 |
| 419 | proteins | 2 | 11 | 3173 | 4784 |
| 430 | Cryptography | 1 | 10 | 1297 | 1231 |
| 430 | Environmental Geochemistry | 1 | 10 | 1235 | 1758 |
| 430 | Coding Theory | 1 | 10 | 691 | 681 |
| 430 | Minerals | 1 | 10 | 1633 | 2194 |
| 434 | Pharmacognosy | 3 | 9 | 2212 | 4456 |
| 434 | Economic History | 1 | 9 | 6306 | 6127 |
| 434 | Geophysics | 2 | 9 | 4791 | 6804 |
| 434 | Physical Chemistry | 3 | 9 | 2728 | 4760 |
| 434 | Quantum electronics | 2 | 9 | 1594 | 2153 |
| 434 | Nanophotonics | 1 | 9 | 663 | 1008 |
| 434 | Optoelectronic devices | 2 | 9 | 1318 | 1806 |
| 434 | commerce | 2 | 9 | 2282 | 3319 |
| 434 | electrocatalysis | 2 | 9 | 143 | 446 |
| 434 | Natural history | 6 | 9 | 4022 | 9097 |
| 444 | Marine Biology | 2 | 8 | 3537 | 5501 |
| 444 | Architectural Design | 2 | 8 | 638 | 1067 |
| 444 | Flexible manufacturing systems | 1 | 8 | 848 | 1358 |
| 444 | Corporate Social Responsibility | 1 | 8 | 656 | 1210 |
| 444 | environmental auditing | 1 | 8 | 682 | 1227 |
| 444 | Technological Innovations | 1 | 8 | 2124 | 2846 |
| 450 | Environmental Geology | 2 | 7 | 2207 | 3770 |
| 450 | Environmental risk assessment | 2 | 7 | 646 | 1527 |
| 450 | Nonlinear mechanics | 1 | 7 | 847 | 1143 |
| 453 | Hydrology | 1 | 6 | 4471 | 5591 |
| 453 | Land use | 1 | 6 | 2175 | 3144 |
| 453 | Risk assessment | 1 | 6 | 1431 | 2151 |
| 453 | Marine Pollution | 1 | 6 | 2272 | 3305 |
| 453 | land degradation | 1 | 6 | 1073 | 1659 |
| 453 | energy transfer | 1 | 6 | 29 | 60 |
| 453 | animal diseases | 1 | 6 | 1044 | 1693 |
| 453 | degradation | 1 | 6 | 1073 | 1659 |
| 461 | Geography | 1 | 5 | 4258 | 5259 |
| 461 | Marine Engineering | 3 | 5 | 316 | 739 |
| 461 | Biogeography | 1 | 5 | 1749 | 2555 |
| 461 | Geometry | 8 | 5 | 892 | 2109 |
| 461 | Public Policy | 1 | 5 | 3661 | 5203 |
| 461 | Naval Architecture | 3 | 5 | 357 | 935 |
| 461 | Diagnostic Imaging | 4 | 5 | 2323 | 5261 |
| 461 | Business Ethics | 2 | 5 | 1223 | 2366 |
| 461 | landscapes | 1 | 5 | 475 | 760 |
| 461 | natural products | 1 | 5 | 3153 | 4014 |
| 461 | Imaging systems | 4 | 5 | 734 | 2163 |
| 461 | Microwaves | 2 | 5 | 1556 | 2228 |
| 461 | Women's health | 1 | 5 | 2927 | 4176 |
| 474 | Geriatrics | 1 | 4 | 5787 | 7104 |
| 474 | Occupational Therapy | 2 | 4 | 1635 | 2924 |
| 474 | Systems Theory | 1 | 4 | 1451 | 1994 |
| 474 | Sustainable Development | 1 | 4 | 4131 | 5768 |
| 474 | Econometrics | 1 | 4 | 2373 | 2978 |
| 474 | Forecasting | 1 | 4 | 1138 | 1589 |
| 474 | Tourism | 1 | 4 | 2766 | 3852 |
| 474 | Expert Systems | 1 | 4 | 539 | 988 |
| 474 | environmental control | 1 | 4 | 563 | 1022 |
| 474 | Broadcasting | 1 | 4 | 381 | 617 |
| 474 | nuclear power | 1 | 4 | 1052 | 1199 |
| 474 | Groundwater | 1 | 4 | 1373 | 2051 |
| 474 | Planets | 1 | 4 | 2610 | 3710 |
| 474 | econometric models | 1 | 4 | 1171 | 1743 |
| 474 | Cancer | 1 | 4 | 6448 | 8188 |
| 489 | Information Systems | 1 | 3 | 3096 | 4602 |
| 489 | Agricultural Ecology | 1 | 3 | 2280 | 3520 |
| 489 | Social Psychology | 3 | 3 | 2502 | 5493 |
| 489 | Risk Management | 1 | 3 | 1698 | 2772 |
| 489 | Calculus of Variations | 2 | 3 | 678 | 1093 |
| 489 | Regional Development | 1 | 3 | 572 | 933 |
| 489 | big data | 3 | 3 | 586 | 1995 |
| 489 | human behavior | 1 | 3 | 4734 | 6999 |
| 489 | Development planning | 1 | 3 | 524 | 859 |
| 489 | Ultrasonic Imaging | 1 | 3 | 1114 | 1818 |
| 489 | Solutions | 1 | 3 | 777 | 1193 |
| 489 | Ultrasound | 1 | 3 | 1163 | 1896 |
| 489 | Economic planning | 1 | 3 | 1031 | 1700 |
| 502 | Software Engineering | 1 | 2 | 1954 | 2777 |
| 502 | Bioenergetics | 1 | 2 | 1728 | 2565 |
| 502 | Economic Development | 1 | 2 | 3312 | 4725 |
| 502 | Product Design | 1 | 2 | 1051 | 1582 |
| 502 | Transportation | 1 | 2 | 2964 | 4280 |
| 502 | Bioremediation | 1 | 2 | 1807 | 2899 |
| 502 | Ecohydrology | 1 | 2 | 831 | 1458 |
| 502 | Urban Transportation | 1 | 2 | 420 | 875 |
| 502 | Mass Spectrometry | 1 | 2 | 2369 | 3525 |
| 502 | Water quality | 1 | 2 | 631 | 1331 |
| 502 | economic policy | 1 | 2 | 4522 | 5651 |
| 502 | air quality | 1 | 2 | 653 | 1329 |
| 502 | visualization | 2 | 2 | 2533 | 3755 |
| 502 | water supply | 1 | 2 | 1817 | 2842 |
| 502 | multimedia | 1 | 2 | 409 | 720 |
| 502 | Water chemistry | 1 | 2 | 907 | 1666 |
| 502 | Interactive multimedia | 1 | 2 | 729 | 1243 |
| 502 | economic development projects | 1 | 2 | 489 | 1041 |
| 502 | freshwater biology | 1 | 2 | 1835 | 2785 |
| 502 | Developing countries | 1 | 2 | 4840 | 6770 |
| 522 | Immunology | 1 | 1 | 6471 | 8470 |
| 522 | Philosophy | 1 | 1 | 2833 | 3004 |
| 522 | Pathology | 1 | 1 | 4565 | 6533 |
| 522 | Aerospace Engineering | 1 | 1 | 756 | 1275 |
| 522 | Neuropsychology | 1 | 1 | 4219 | 6014 |
| 522 | Occupational Health | 1 | 1 | 2586 | 3939 |
| 522 | Tissue Engineering | 2 | 1 | 483 | 1299 |
| 522 | Algorithms | 1 | 1 | 1412 | 2109 |
| 522 | Neurophysiology | 1 | 1 | 4962 | 6885 |
| 522 | industrial hygiene | 1 | 1 | 2614 | 3952 |
| 522 | Translation | 2 | 1 | 200 | 370 |
| 522 | gene therapy | 1 | 1 | 2374 | 3682 |
| 522 | X-rays | 1 | 1 | 1522 | 2263 |
| 522 | Brain | 1 | 1 | 4582 | 6279 |
| 522 | Mitochondrial DNA | 1 | 1 | 538 | 984 |
| 522 | Methodology | 1 | 1 | 1070 | 1847 |
| 522 | Genetic therapy | 1 | 1 | 2533 | 3803 |
| 522 | Approximation Theory | 1 | 1 | 799 | 1130 |
| 522 | biomedicine | 1 | 1 | 2045 | 3553 |
| 522 | international cooperation | 2 | 1 | 905 | 2307 |
| 542 | Cytology | 1 | 0 | 7190 | 9736 |
| 542 | Developmental Psychology | 2 | 0 | 1449 | 3276 |
| 542 | Databases | 1 | 0 | 727 | 1313 |
| 542 | Cell Biology | 1 | 0 | 6916 | 9443 |
| 542 | Quantum Optics | 1 | 0 | 1622 | 2363 |
| 542 | Strategic planning | 1 | 0 | 1500 | 2518 |
| 542 | Infrared spectroscopy | 1 | 0 | 814 | 1567 |
| 542 | Mobile Commerce | 1 | 0 | 862 | 1552 |
| 542 | personality | 2 | 0 | 1932 | 3905 |
| 542 | Social behavior | 2 | 0 | 1693 | 3760 |
| 542 | Laser Spectroscopy | 1 | 0 | 1540 | 2274 |
