| 1 | Catalysis | 133 | 13.5K | 585 | 277 |
| 2 | Nanotechnology | 45 | 5.5K | 1683 | 868 |
| 3 | Chemical Engineering | 121 | 5.2K | 751 | 689 |
| 4 | Materials | 45 | 3.9K | 2200 | 1284 |
| 5 | Biochemical Engineering | 71 | 3.7K | 561 | 757 |
| 6 | nanoscience | 21 | 3.7K | 1293 | 526 |
| 7 | Materials Science | 32 | 3.6K | 1944 | 921 |
| 8 | Biocompatible Materials | 19 | 3.3K | 1942 | 892 |
| 9 | Chemistry | 98 | 2.9K | 2542 | 2960 |
| 10 | Surface Chemistry | 50 | 2.8K | 1102 | 726 |
| 10 | Colloids | 50 | 2.8K | 1092 | 776 |
| 12 | Pollution | 43 | 2.7K | 1770 | 1506 |
| 13 | Energy Policy | 31 | 2.2K | 726 | 511 |
| 14 | Environmental Health | 36 | 2.0K | 1871 | 1528 |
| 15 | Nanostructured Materials | 22 | 1.8K | 1503 | 860 |
| 16 | Mathematics | 185 | 1.8K | 945 | 1070 |
| 17 | Environmental Engineering | 19 | 1.6K | 1777 | 1046 |
| 18 | sanitation | 8 | 1.4K | 1150 | 639 |
| 19 | Physics | 67 | 1.4K | 3209 | 5151 |
| 20 | Ecology | 42 | 1.3K | 2224 | 2725 |
| 21 | Science | 70 | 1.2K | 3297 | 5847 |
| 22 | environmental pollution | 34 | 1.2K | 1567 | 1706 |
| 23 | vibration | 13 | 1.1K | 587 | 214 |
| 24 | Renewable Energy Sources | 19 | 1.1K | 1006 | 1154 |
| 25 | Artificial Intelligence | 60 | 918 | 773 | 1111 |
| 26 | System analysis | 34 | 874 | 631 | 566 |
| 27 | Environmental Management | 24 | 836 | 1012 | 1236 |
| 28 | energy resources | 9 | 789 | 829 | 659 |
| 29 | Environmental monitoring | 22 | 780 | 1694 | 1791 |
| 30 | Structural dynamics | 5 | 767 | 915 | 353 |
| 31 | Research | 43 | 740 | 3501 | 4740 |
| 32 | Biochemistry | 36 | 720 | 4148 | 4892 |
| 33 | China | 43 | 691 | 649 | 779 |
| 34 | Fuzzy systems | 45 | 688 | 171 | 195 |
| 35 | Environment | 25 | 686 | 2194 | 3366 |
| 36 | Optics | 22 | 683 | 2407 | 1639 |
| 37 | actuators | 12 | 663 | 1253 | 932 |
| 37 | transducers | 12 | 663 | 1253 | 932 |
| 39 | Statistical physics | 30 | 641 | 1581 | 1555 |
| 40 | Medicine | 40 | 624 | 4517 | 6643 |
| 41 | coal | 20 | 619 | 569 | 694 |
| 42 | Automation | 14 | 608 | 909 | 664 |
| 43 | Pharmacology | 14 | 599 | 3560 | 3063 |
| 44 | Electrochemistry | 13 | 597 | 2416 | 1700 |
| 45 | management | 28 | 590 | 1212 | 1543 |
| 46 | Biology | 25 | 581 | 5315 | 7116 |
| 47 | Industrial Engineering | 15 | 566 | 859 | 648 |
| 48 | Electronics | 23 | 519 | 1608 | 1325 |
| 49 | Environmental Policy | 20 | 516 | 1330 | 1971 |
| 50 | mathematical analysis | 49 | 504 | 671 | 760 |
| 51 | Economics | 49 | 502 | 1287 | 1720 |
| 52 | computer networks | 15 | 500 | 1174 | 870 |
| 53 | Neural circuitry | 11 | 496 | 1077 | 839 |
| 54 | Biotechnology | 33 | 469 | 2524 | 4153 |
| 55 | energy conservation | 9 | 461 | 1195 | 1065 |
| 56 | Economic History | 40 | 460 | 1013 | 1230 |
| 57 | Social Change | 6 | 456 | 708 | 505 |
| 58 | Information Science | 10 | 444 | 1559 | 1150 |
| 59 | Nuclear Physics | 21 | 433 | 2404 | 2363 |
| 60 | Operations Research | 37 | 411 | 620 | 1054 |
| 61 | Mathematical Physics | 35 | 410 | 1012 | 1271 |
| 62 | Analytical Chemistry | 24 | 409 | 2146 | 2749 |
| 63 | Investment analysis | 20 | 406 | 117 | 240 |
| 64 | Bioengineering | 22 | 399 | 2021 | 3331 |
| 65 | Biomedical Engineering | 32 | 397 | 1824 | 2969 |
| 66 | Systems Engineering | 36 | 375 | 421 | 770 |
| 66 | Water | 13 | 375 | 1419 | 1870 |
| 68 | environmental indicators | 7 | 372 | 780 | 628 |
| 69 | Nonlinear functional analysis | 14 | 359 | 499 | 403 |
| 70 | Sustainable Engineering | 9 | 352 | 1027 | 997 |
| 70 | environmental protection | 21 | 352 | 1433 | 2247 |
| 72 | Water pollution | 12 | 345 | 1662 | 1969 |
| 73 | Neurochemistry | 5 | 344 | 2308 | 1800 |
| 74 | Green Chemistry | 7 | 342 | 1334 | 1271 |
| 75 | Cybernetics | 18 | 341 | 468 | 629 |
| 76 | Engineering | 30 | 339 | 1507 | 1974 |
| 77 | Toxicology | 11 | 336 | 3418 | 3504 |
| 78 | Developing countries | 7 | 322 | 1854 | 1275 |
| 79 | commerce | 19 | 313 | 509 | 821 |
| 80 | Intelligent Control Systems | 19 | 307 | 259 | 234 |
| 81 | Health Information Management | 4 | 303 | 225 | 335 |
| 81 | clay | 2 | 303 | 1118 | 485 |
| 83 | Molecular Biology | 17 | 295 | 5034 | 6786 |
| 84 | Neurology | 8 | 294 | 4538 | 4414 |
| 85 | Statistics | 49 | 291 | 703 | 1447 |
| 85 | Image Processing | 11 | 291 | 1167 | 1225 |
| 87 | Biomass Energy | 10 | 284 | 1597 | 1959 |
| 87 | air quality management | 2 | 284 | 842 | 250 |
| 89 | Internet of Things | 7 | 283 | 433 | 243 |
| 89 | internet | 7 | 283 | 820 | 531 |
| 91 | Education | 4 | 275 | 4291 | 1746 |
| 92 | Medicinal plants | 7 | 273 | 1049 | 1033 |
| 93 | Pharmacognosy | 6 | 262 | 1564 | 1402 |
| 94 | Wireless Communication Systems | 8 | 261 | 1461 | 918 |
| 95 | food technology | 12 | 257 | 1491 | 1862 |
| 96 | fuel cells | 3 | 253 | 1452 | 1059 |
| 96 | city planning | 12 | 253 | 835 | 864 |
| 98 | Measurement | 11 | 246 | 614 | 626 |
| 99 | Intelligent Transportation Systems | 3 | 245 | 850 | 331 |
| 100 | Process Control | 3 | 240 | 972 | 777 |
| 100 | economic policy | 17 | 240 | 1146 | 1134 |
| 100 | Production Management | 3 | 240 | 1225 | 972 |
| 103 | Eastern Europe | 16 | 239 | 282 | 205 |
| 104 | Functional Analysis | 14 | 232 | 636 | 644 |
| 105 | Food | 9 | 229 | 2264 | 2504 |
| 106 | Production Engineering | 20 | 217 | 718 | 1069 |
| 106 | Pharmaceutical Chemistry | 10 | 217 | 2920 | 3450 |
| 106 | carbon monoxide | 3 | 217 | 337 | 227 |
| 109 | Nanoparticles | 8 | 214 | 1344 | 1508 |
| 110 | finance | 14 | 204 | 1184 | 1386 |
| 111 | Fractals | 6 | 197 | 945 | 688 |
| 112 | Combinatorial optimization | 15 | 196 | 111 | 103 |
| 112 | Asia | 26 | 196 | 835 | 1401 |
| 114 | Solitons | 5 | 195 | 901 | 625 |
| 114 | Chaos | 5 | 195 | 901 | 625 |
| 116 | Urban Policy | 6 | 191 | 542 | 574 |
| 117 | Organic Chemistry | 10 | 187 | 2346 | 2622 |
| 118 | Organizational learning | 22 | 186 | 34 | 120 |
| 118 | Knowledge management | 22 | 186 | 28 | 67 |
| 120 | Manufacturing Processes | 16 | 183 | 1090 | 1717 |
| 121 | Remote Sensing | 2 | 180 | 2196 | 771 |
| 122 | Water quality management | 5 | 176 | 1645 | 1232 |
| 123 | Earth Sciences | 9 | 175 | 2379 | 2590 |
| 124 | Spectrum analysis | 11 | 172 | 3108 | 3689 |
| 125 | Engineering Mathematics | 33 | 164 | 648 | 1411 |
| 126 | Biomass | 3 | 162 | 747 | 728 |
| 127 | Robotics | 7 | 159 | 1250 | 1252 |
| 128 | Business | 9 | 158 | 1452 | 1906 |
| 129 | Social Sciences | 18 | 157 | 1695 | 2213 |
| 130 | Biophysics | 7 | 149 | 5194 | 5554 |
| 130 | Nanostructures | 11 | 149 | 1313 | 2159 |
| 132 | Optical materials | 7 | 146 | 2116 | 2579 |
| 133 | Microbiology | 12 | 144 | 4678 | 7215 |
| 134 | Pharmacy | 6 | 141 | 1879 | 2020 |
| 135 | Securities | 4 | 138 | 256 | 267 |
| 135 | Chemical industry | 8 | 138 | 937 | 899 |
| 137 | Production Planning | 1 | 133 | 589 | 257 |
| 137 | Production Control | 1 | 133 | 575 | 256 |
| 139 | Bioorganic chemistry | 4 | 132 | 2980 | 2928 |
| 140 | Molecular Spectroscopy | 9 | 128 | 1167 | 1577 |
| 141 | Mineral resources | 8 | 127 | 245 | 570 |
| 142 | environmental exposure | 4 | 124 | 2105 | 2136 |
| 143 | Crystal growth | 2 | 123 | 1431 | 985 |
| 144 | Sustainable Development | 18 | 122 | 720 | 2162 |
| 144 | stocks | 3 | 122 | 108 | 140 |
| 146 | Mechanical Engineering | 14 | 120 | 1363 | 1719 |
| 147 | Technology | 12 | 118 | 2685 | 3913 |
| 148 | health planning | 9 | 116 | 1422 | 1970 |
| 149 | Dynamics | 19 | 115 | 654 | 1249 |
| 150 | Quality Control | 3 | 114 | 2244 | 1842 |
| 151 | Composite Materials | 4 | 113 | 2758 | 2943 |
| 151 | lasers | 9 | 113 | 1267 | 1383 |
| 153 | Polymers | 11 | 111 | 3197 | 4294 |
| 154 | Industrial Microbiology | 6 | 110 | 1640 | 2482 |
| 155 | Surface-Active Agents | 4 | 109 | 1062 | 1388 |
| 155 | Surface properties | 4 | 109 | 1142 | 1512 |
| 157 | International Finance | 11 | 108 | 905 | 1465 |
| 158 | Econometrics | 6 | 107 | 1108 | 1126 |
| 159 | Photochemistry | 4 | 104 | 1916 | 1925 |
| 159 | Land use | 6 | 104 | 891 | 1295 |
| 159 | Photobiology | 4 | 104 | 1460 | 1452 |
| 162 | polymerization | 9 | 103 | 2930 | 3715 |
| 163 | Physical Chemistry | 4 | 102 | 2417 | 2450 |
| 164 | Environmental Toxicology | 4 | 101 | 2639 | 3264 |
| 164 | sustainability | 2 | 101 | 1216 | 1128 |
| 164 | pollutants | 3 | 101 | 2327 | 2422 |
| 164 | Environmental pollutants | 3 | 101 | 2806 | 2768 |
| 168 | Electrophysiology | 1 | 99 | 2321 | 1139 |
| 169 | Brain | 3 | 98 | 3249 | 3272 |
| 170 | Humanities | 13 | 97 | 778 | 1003 |
| 170 | Signal Processing | 12 | 97 | 1062 | 1780 |
| 172 | Geriatrics | 2 | 95 | 4652 | 3293 |
| 172 | older people | 2 | 95 | 2595 | 1391 |
| 174 | foods | 1 | 91 | 690 | 210 |
| 175 | marketing | 8 | 86 | 1306 | 1988 |
| 175 | drugs | 3 | 86 | 2892 | 2768 |
| 177 | Information Technology | 8 | 85 | 1760 | 2282 |
| 177 | Environmental Geology | 4 | 85 | 1591 | 1841 |
| 179 | Hydrology | 5 | 84 | 2415 | 2745 |
| 179 | soil conservation | 4 | 84 | 752 | 965 |
| 179 | global environmental change | 1 | 84 | 1715 | 1342 |
| 179 | environmental issues | 1 | 84 | 976 | 607 |
| 183 | Clinical Chemistry | 3 | 82 | 3795 | 3995 |
| 183 | Developmental Neurobiology | 1 | 82 | 1238 | 678 |
| 185 | Rock Mechanics | 3 | 80 | 1017 | 1024 |
| 186 | Engineering Geology | 2 | 79 | 1925 | 1653 |
| 187 | Computational Complexity | 14 | 77 | 361 | 822 |
| 188 | Control Theory | 10 | 74 | 1066 | 1541 |
| 188 | mass transfer | 6 | 74 | 1362 | 2009 |
| 188 | land degradation | 3 | 74 | 570 | 714 |
| 188 | degradation | 3 | 74 | 570 | 714 |
| 192 | infrared radiation | 5 | 73 | 500 | 537 |
| 193 | Sociology | 8 | 72 | 2249 | 3535 |
| 193 | Europe | 3 | 72 | 4258 | 3638 |
| 195 | Numerical Analysis | 16 | 71 | 1124 | 2203 |
| 195 | miniaturization | 6 | 71 | 1580 | 2787 |
| 197 | Ecological Engineering | 1 | 70 | 1342 | 1118 |
| 198 | Molecular structure | 3 | 67 | 3047 | 3014 |
| 199 | Mobile Computing | 7 | 64 | 754 | 1069 |
| 199 | Imaging systems | 7 | 64 | 436 | 664 |
| 201 | Electrical Engineering | 7 | 63 | 2890 | 2835 |
| 201 | Information Systems | 2 | 63 | 2234 | 1934 |
| 201 | Financial Institutions | 1 | 63 | 852 | 503 |
| 201 | Telecommunication | 12 | 63 | 1240 | 2203 |
| 205 | Detectors | 7 | 62 | 579 | 825 |
| 206 | Behavior | 5 | 61 | 3223 | 5093 |
| 207 | Educational Leadership | 1 | 59 | 365 | 128 |
| 207 | Analytical Biochemistry | 6 | 59 | 1536 | 2544 |
| 209 | Public Health | 5 | 58 | 6213 | 8216 |
| 209 | human behavior | 4 | 58 | 2653 | 4343 |
| 211 | economic indicators | 3 | 57 | 120 | 95 |
| 211 | soil microbiology | 1 | 57 | 2781 | 2771 |
| 211 | Plant diseases | 1 | 57 | 3322 | 2394 |
| 211 | Mountains | 3 | 57 | 471 | 370 |
| 215 | Psychology | 8 | 56 | 4098 | 6516 |
| 215 | Solid State Physics | 2 | 56 | 4764 | 4127 |
| 217 | Computer Graphics | 3 | 55 | 1941 | 2032 |
| 217 | Social Psychology | 5 | 55 | 1922 | 2950 |
| 217 | particles | 4 | 55 | 981 | 1351 |
| 217 | Granular materials | 3 | 55 | 651 | 913 |
| 217 | drug development | 1 | 55 | 2340 | 2408 |
| 222 | Molecules | 4 | 54 | 1615 | 1681 |
| 223 | Geomorphology | 2 | 53 | 1865 | 2077 |
| 223 | Soil Science | 2 | 53 | 2589 | 2623 |
| 223 | Consumer education | 1 | 53 | 758 | 607 |
| 226 | Health Services Research | 1 | 52 | 3704 | 2623 |
| 226 | Technology Assessment | 3 | 52 | 368 | 732 |
| 226 | Microcirculation | 1 | 52 | 1065 | 823 |
| 226 | Computational Intelligence | 12 | 52 | 313 | 1075 |
| 226 | Primary health care | 1 | 52 | 3822 | 2666 |
| 226 | Blood vessels | 1 | 52 | 890 | 672 |
| 226 | Decision making | 8 | 52 | 972 | 2146 |
| 233 | Computational Biology | 12 | 51 | 1796 | 4380 |
| 233 | Tissue Engineering | 1 | 51 | 695 | 521 |
| 233 | Regenerative Medicine | 1 | 51 | 378 | 163 |
| 233 | planning | 3 | 51 | 860 | 922 |
| 237 | Cytology | 3 | 50 | 5222 | 6566 |
| 237 | Chromatographic analysis | 3 | 50 | 2397 | 2578 |
| 237 | Australia | 5 | 50 | 1858 | 2511 |
| 240 | Medical Laboratory Science | 2 | 49 | 3179 | 3606 |
| 240 | Transportation | 3 | 49 | 1937 | 2202 |
| 242 | Energy Storage | 3 | 48 | 1486 | 1758 |
| 242 | Green Technology | 3 | 48 | 473 | 592 |
| 244 | Economic Geography | 2 | 47 | 522 | 516 |
| 244 | Urban Economics | 2 | 47 | 504 | 637 |
| 244 | Visual Communication | 2 | 47 | 683 | 543 |
| 244 | Labor Economics | 2 | 47 | 714 | 692 |
| 244 | Image enhancement | 2 | 47 | 470 | 498 |
| 244 | Urbanization | 2 | 47 | 364 | 286 |
| 244 | Globalization | 2 | 47 | 840 | 895 |
| 244 | Social policy | 3 | 47 | 1198 | 1239 |
| 244 | Communication | 2 | 47 | 2995 | 2547 |
| 253 | Metals | 4 | 46 | 2416 | 3029 |
| 254 | Diagnostic Imaging | 6 | 45 | 1918 | 3074 |
| 254 | Corporate Social Responsibility | 3 | 45 | 284 | 700 |
| 254 | environmental auditing | 3 | 45 | 300 | 710 |
| 254 | Ultrasonics | 2 | 45 | 1570 | 1984 |
| 254 | Sonochemistry | 2 | 45 | 866 | 1376 |
| 254 | Biodiversity | 2 | 45 | 3296 | 3510 |
| 260 | Energy Conversion | 2 | 44 | 1618 | 2083 |
| 260 | Public Policy | 3 | 44 | 2260 | 2993 |
| 260 | Tourism | 4 | 44 | 1544 | 2374 |
| 260 | Electrophoresis | 2 | 44 | 2490 | 2710 |
| 260 | Chromatography | 2 | 44 | 2474 | 2531 |
| 265 | Medical Technology | 1 | 43 | 4049 | 3258 |
| 265 | Soil Mechanics | 4 | 43 | 1121 | 1581 |
| 265 | Plant Genetics | 1 | 43 | 1310 | 1344 |
| 265 | Nonlinear Dynamics | 8 | 43 | 1681 | 2831 |
| 265 | Plant physiology | 1 | 43 | 3487 | 3379 |
| 265 | plant molecular biology | 1 | 43 | 2661 | 2809 |
| 265 | Chemical reactors | 7 | 43 | 17 | 29 |
| 272 | Economic planning | 2 | 42 | 709 | 830 |
| 273 | Algorithms | 3 | 41 | 844 | 918 |
| 273 | Cell Biology | 2 | 41 | 5759 | 6733 |
| 273 | reasoning | 1 | 41 | 850 | 582 |
| 273 | economic analysis | 4 | 41 | 214 | 398 |
| 277 | Nutrition | 2 | 40 | 6395 | 6991 |
| 277 | Communist countries | 4 | 40 | 190 | 242 |
| 277 | Porous materials | 3 | 40 | 886 | 1019 |
| 277 | Soviet Union | 4 | 40 | 704 | 640 |
| 281 | Geography | 4 | 39 | 2482 | 3382 |
| 281 | Geology | 5 | 39 | 2944 | 4040 |
| 281 | Multivariate Analysis | 4 | 39 | 466 | 718 |
| 281 | Strategic planning | 5 | 39 | 603 | 1192 |
| 281 | Multimedia Systems | 5 | 39 | 1508 | 2084 |
| 281 | probabilities | 7 | 39 | 975 | 1304 |
| 287 | Applied Mathematics | 15 | 38 | 285 | 698 |
| 287 | Bifurcation Theory | 7 | 38 | 400 | 805 |
| 289 | Immunotherapy | 1 | 37 | 3625 | 3565 |
| 289 | Regional Planning | 2 | 37 | 2201 | 2206 |
| 289 | Physical organic chemistry | 2 | 37 | 1941 | 2106 |
| 289 | Immunopharmacology | 1 | 37 | 2150 | 2013 |
| 289 | cytokines | 1 | 37 | 2646 | 2643 |
| 289 | United States | 3 | 37 | 7093 | 7912 |
| 295 | Epidemiology | 3 | 35 | 5065 | 6764 |
| 295 | Telecommunication Systems | 4 | 35 | 1596 | 2067 |
| 295 | Psychophysiology | 3 | 35 | 3533 | 4823 |
| 298 | Drug design | 2 | 34 | 2651 | 3176 |
| 298 | peptides | 1 | 34 | 1916 | 1494 |
| 298 | proteins | 1 | 34 | 4042 | 3660 |
| 301 | Educational Psychology | 3 | 33 | 1601 | 2169 |
| 301 | Condensed Matter | 4 | 33 | 3456 | 4209 |
| 303 | Human Geography | 1 | 32 | 2098 | 1593 |
| 303 | Vocational guidance | 1 | 32 | 1640 | 1473 |
| 303 | Metallography | 3 | 32 | 949 | 1442 |
| 303 | Nonlinear systems | 5 | 32 | 485 | 902 |
| 307 | Attention | 1 | 31 | 3889 | 3606 |
| 307 | Catalysts | 2 | 31 | 975 | 1171 |
| 309 | Genetics | 1 | 30 | 7125 | 7155 |
| 309 | Logistics | 1 | 30 | 1071 | 1084 |
| 309 | Entropy | 2 | 30 | 1617 | 1654 |
| 309 | Diet | 1 | 30 | 4188 | 4380 |
| 309 | heredity | 1 | 30 | 1521 | 1370 |
| 309 | Evolution | 1 | 30 | 3611 | 3650 |
| 315 | Quantum Chemistry | 2 | 29 | 1330 | 1233 |
| 316 | Photonics | 1 | 28 | 2950 | 2969 |
| 317 | Information Theory | 4 | 27 | 1243 | 1830 |
| 317 | Metallurgy | 4 | 27 | 2699 | 3634 |
| 317 | Child | 1 | 27 | 4980 | 4372 |
| 317 | Food service management | 1 | 27 | 758 | 986 |
| 317 | Cognition | 1 | 27 | 3064 | 3032 |
| 317 | children | 1 | 27 | 1142 | 1029 |
| 323 | Microelectronics | 2 | 26 | 2516 | 3097 |
| 323 | machinery | 4 | 26 | 757 | 1345 |
| 323 | Information society | 1 | 26 | 386 | 351 |
| 326 | Human-Computer Interaction | 5 | 25 | 1340 | 2779 |
| 326 | Teaching | 1 | 25 | 3444 | 2694 |
| 326 | curriculum evaluation | 1 | 25 | 708 | 663 |
| 326 | thinking | 1 | 25 | 601 | 598 |
| 326 | synthesis | 2 | 25 | 1545 | 1562 |
| 326 | Creativity | 1 | 25 | 639 | 689 |
| 332 | East Asia | 2 | 24 | 954 | 977 |
| 333 | Total Quality Management | 2 | 23 | 799 | 1213 |
| 333 | consumer behavior | 1 | 23 | 1070 | 1194 |
| 333 | Transnational corporations | 1 | 23 | 756 | 818 |
| 333 | biomedicine | 2 | 23 | 1464 | 2161 |
| 337 | Biosensors | 2 | 22 | 1832 | 3165 |
| 337 | Educational Sociology | 1 | 22 | 745 | 643 |
| 337 | North America | 2 | 22 | 1449 | 1832 |
| 337 | Social work | 3 | 22 | 1820 | 2507 |
| 337 | hygiene | 1 | 22 | 1216 | 1330 |
| 342 | Bioremediation | 2 | 21 | 1272 | 2076 |
| 342 | Organometallic chemistry | 3 | 21 | 2305 | 3122 |
| 342 | Smart Materials | 3 | 21 | 1037 | 1754 |
| 342 | Neuroplasticity | 1 | 21 | 876 | 1045 |
| 342 | neuronal plasticity | 1 | 21 | 733 | 943 |
| 342 | Japan | 1 | 21 | 4079 | 3512 |
| 348 | Pharmaceutical Technology | 1 | 20 | 2812 | 3140 |
| 348 | Pharmacokinetics | 1 | 20 | 2087 | 2223 |
| 348 | Geographic information systems | 1 | 20 | 2254 | 2039 |
| 348 | technology transfer | 2 | 20 | 410 | 745 |
| 348 | Simulation Methods | 1 | 20 | 2078 | 2009 |
| 348 | concrete | 1 | 20 | 1767 | 2035 |
| 348 | Cement | 1 | 20 | 1130 | 1398 |
| 348 | drug evaluation | 1 | 20 | 2757 | 3055 |
| 356 | Immunology | 1 | 19 | 6471 | 6966 |
| 356 | Serology | 1 | 19 | 1175 | 1275 |
| 356 | Bacteriology | 1 | 19 | 3590 | 4352 |
| 356 | Water quality | 1 | 19 | 631 | 738 |
| 356 | Ocean Engineering | 1 | 19 | 2772 | 3028 |
| 356 | Environmental Geochemistry | 1 | 19 | 1235 | 1406 |
| 356 | Water chemistry | 1 | 19 | 907 | 935 |
| 356 | Minerals | 1 | 19 | 1633 | 1817 |
| 364 | Materials Engineering | 4 | 18 | 688 | 1424 |
| 364 | Astrophysics | 4 | 18 | 3257 | 4700 |
| 364 | Emulsions | 1 | 18 | 832 | 764 |
| 364 | Aquatic ecology | 1 | 18 | 1879 | 2011 |
| 368 | Urban Planning | 1 | 17 | 802 | 994 |
| 368 | Structural design | 1 | 17 | 1534 | 1647 |
| 368 | health services accessibility | 1 | 17 | 2114 | 2258 |
| 368 | community development | 1 | 17 | 1205 | 1189 |
| 368 | Forecasting | 3 | 17 | 620 | 1163 |
| 368 | Cognitive Science | 2 | 17 | 2202 | 3245 |
| 368 | Socioeconomic Factors | 1 | 17 | 1731 | 2193 |
| 368 | Microprocessors | 1 | 17 | 1149 | 1135 |
| 368 | Fractional Calculus | 3 | 17 | 146 | 362 |
| 368 | Obesity | 1 | 17 | 3932 | 4798 |
| 368 | Eating Disorders | 1 | 17 | 1688 | 1974 |
| 368 | Feeding and Eating Disorders | 1 | 17 | 1623 | 1904 |
| 368 | Housing | 1 | 17 | 956 | 1139 |
| 368 | feeding behavior | 1 | 17 | 1552 | 1958 |
| 368 | Population | 1 | 17 | 2266 | 2280 |
| 368 | Developed countries | 1 | 17 | 462 | 569 |
| 384 | Corporate governance | 1 | 16 | 1204 | 1417 |
| 384 | Evolutionary Computation | 2 | 16 | 553 | 1003 |
| 384 | Swarm Intelligence | 2 | 16 | 372 | 769 |
| 387 | Algebra | 4 | 15 | 1528 | 1795 |
| 387 | Ceramics | 1 | 15 | 2726 | 2815 |
| 387 | Industrial Safety | 1 | 15 | 2552 | 2601 |
| 387 | Fixed Point Theory | 6 | 15 | 174 | 458 |
| 387 | Bioelectronics | 1 | 15 | 2094 | 3004 |
| 387 | Glass | 1 | 15 | 2063 | 2393 |
| 387 | pottery | 1 | 15 | 1987 | 2319 |
| 394 | Computer Science | 9 | 14 | 1407 | 4036 |
| 394 | Physiology | 2 | 14 | 5956 | 8129 |
| 394 | Environmental Law | 1 | 14 | 2310 | 3081 |
| 394 | Calculus of Variations | 4 | 14 | 476 | 783 |
| 394 | Agriculture | 5 | 14 | 2277 | 4715 |
| 399 | Physical Geography | 1 | 13 | 1199 | 1256 |
| 399 | Rural Development | 2 | 13 | 882 | 1309 |
| 399 | Economic Development | 4 | 13 | 1761 | 3699 |
| 399 | Entrepreneurship | 1 | 13 | 1912 | 2265 |
| 399 | Microbial Metabolism | 1 | 13 | 486 | 850 |
| 399 | Small Business | 1 | 13 | 1340 | 1824 |
| 399 | Mechanics | 3 | 13 | 1634 | 2410 |
| 399 | Organometallic compounds | 1 | 13 | 2122 | 2440 |
| 399 | Korea | 4 | 13 | 325 | 807 |
| 399 | biological factors | 1 | 13 | 3597 | 4333 |
| 409 | Supply Chain Management | 2 | 12 | 90 | 238 |
| 409 | Alternative Medicine | 1 | 12 | 3740 | 4557 |
| 409 | complementary therapies | 1 | 12 | 4104 | 4832 |
| 412 | Mechatronics | 2 | 11 | 1027 | 1732 |
| 412 | Building Materials | 1 | 11 | 2668 | 3399 |
| 412 | Cosmology | 2 | 11 | 1908 | 2126 |
| 412 | Advertising | 1 | 11 | 681 | 958 |
| 412 | Bioinformatics | 2 | 11 | 3141 | 4759 |
| 412 | Child psychology | 1 | 11 | 2906 | 3528 |
| 412 | natural products | 1 | 11 | 3153 | 3545 |
| 412 | Roads | 1 | 11 | 1407 | 1468 |
| 412 | radioactive waste | 1 | 11 | 1615 | 2525 |
| 412 | Reproduction | 1 | 11 | 4375 | 5160 |
| 412 | Eurasia | 1 | 11 | 514 | 625 |
| 412 | industrial waste | 1 | 11 | 1666 | 2529 |
| 412 | Hazardous waste | 1 | 11 | 1861 | 2738 |
| 412 | econometric models | 2 | 11 | 873 | 1480 |
| 426 | Microbial Ecology | 1 | 10 | 4203 | 5661 |
| 426 | Analytical Toxicology | 1 | 10 | 550 | 833 |
| 426 | Environmental Chemistry | 2 | 10 | 3187 | 5047 |
| 426 | nuclear astrophysics | 1 | 10 | 892 | 1069 |
| 426 | soil pollution | 1 | 10 | 1257 | 1643 |
| 426 | Magnetic Materials | 3 | 10 | 1678 | 2799 |
| 426 | motivation | 1 | 10 | 661 | 956 |
| 426 | international trade | 1 | 10 | 1439 | 1623 |
| 426 | Chemical processes | 1 | 10 | 1299 | 1641 |
| 426 | Stem cells | 1 | 10 | 3027 | 3835 |
| 426 | Learning | 1 | 10 | 2659 | 3214 |
| 437 | Nanochemistry | 2 | 9 | 1729 | 2928 |
| 437 | Nuclear Fusion | 2 | 9 | 873 | 1230 |
| 437 | Coastal zone management | 1 | 9 | 1398 | 2008 |
| 437 | Sustainable agriculture | 3 | 9 | 883 | 2105 |
| 437 | Solid State Chemistry | 1 | 9 | 3880 | 4518 |
| 437 | Fracture mechanics | 3 | 9 | 1621 | 2995 |
| 437 | Radiation | 1 | 9 | 4152 | 4786 |
| 437 | Synchrotron Radiation | 1 | 9 | 833 | 1048 |
| 437 | Child welfare | 1 | 9 | 2335 | 2900 |
| 437 | Adaptive control systems | 1 | 9 | 1145 | 1388 |
| 437 | Mobile Commerce | 2 | 9 | 531 | 768 |
| 437 | Marine resources | 1 | 9 | 1424 | 2015 |
| 437 | X-rays | 4 | 9 | 711 | 1707 |
| 437 | Adolescent | 1 | 9 | 4458 | 5125 |
| 437 | Urban Areas | 1 | 9 | 524 | 697 |
| 452 | Database Management | 1 | 8 | 1472 | 1901 |
| 452 | Neuropsychology | 1 | 8 | 4219 | 5303 |
| 452 | Real Estate Development | 1 | 8 | 70 | 94 |
| 452 | Greenhouse gases | 1 | 8 | 735 | 1207 |
| 452 | Neurophysiology | 1 | 8 | 4957 | 6236 |
| 452 | sustainable construction | 1 | 8 | 30 | 55 |
| 452 | foreign exchange | 2 | 8 | 496 | 1007 |
| 459 | Electromagnetism | 2 | 7 | 1101 | 1735 |
| 459 | Biomechanics | 2 | 7 | 2266 | 3811 |
| 459 | Electromagnetic fields | 2 | 7 | 480 | 810 |
| 459 | Ore deposits | 1 | 7 | 914 | 1243 |
| 463 | Botany | 2 | 6 | 5079 | 7501 |
| 463 | Waste management | 1 | 6 | 2716 | 3691 |
| 463 | Quantum Optics | 1 | 6 | 1615 | 1994 |
| 463 | Water Purification | 1 | 6 | 2184 | 3075 |
| 463 | Plastics | 2 | 6 | 2457 | 3860 |
| 463 | Chemical analysis | 1 | 6 | 2295 | 3244 |
| 463 | Food preferences | 1 | 6 | 789 | 1275 |
| 463 | explosives | 1 | 6 | 519 | 634 |
| 463 | Atomic spectroscopy | 1 | 6 | 2079 | 2592 |
| 463 | Laser Spectroscopy | 1 | 6 | 1540 | 1904 |
| 463 | Recycling | 1 | 6 | 1228 | 2172 |
| 474 | Nuclear Engineering | 1 | 5 | 2367 | 2755 |
| 474 | Geometry | 3 | 5 | 1413 | 2097 |
| 474 | Geophysics | 3 | 5 | 4195 | 7212 |
| 474 | Systems Analysis | 2 | 5 | 1631 | 3186 |
| 474 | Natural resources | 1 | 5 | 1551 | 2218 |
| 474 | Heat Exchangers | 1 | 5 | 2108 | 3113 |
| 474 | Nuclear Facilities | 1 | 5 | 171 | 218 |
| 474 | Nanotubes | 1 | 5 | 483 | 750 |
| 482 | Medical Microbiology | 1 | 4 | 4498 | 6308 |
| 482 | Stochastic Processes | 4 | 4 | 893 | 2387 |
| 482 | Sports Medicine | 1 | 4 | 4665 | 5444 |
| 482 | Oral Pathology | 1 | 4 | 214 | 447 |
| 482 | food contamination | 1 | 4 | 2199 | 3117 |
| 482 | Ferroelectricity | 1 | 4 | 1654 | 1942 |
| 482 | Sports | 1 | 4 | 3730 | 4291 |
| 482 | Pesticides | 1 | 4 | 1437 | 2199 |
| 482 | Quality of life | 1 | 4 | 3137 | 4738 |
| 482 | Capital market | 1 | 4 | 803 | 1315 |
| 482 | organization | 1 | 4 | 1423 | 2100 |
| 482 | Money | 1 | 4 | 681 | 1170 |
| 482 | identity recognition | 1 | 4 | 60 | 132 |
| 482 | Exercise | 1 | 4 | 2618 | 3360 |
| 496 | Early Childhood Education | 1 | 3 | 1092 | 1554 |
| 496 | Thermodynamics | 2 | 3 | 1711 | 2900 |
| 496 | Nonparametric Statistics | 2 | 3 | 243 | 588 |
| 496 | Telecommunications | 1 | 3 | 1686 | 2322 |
| 496 | Quantum electronics | 2 | 3 | 1590 | 2659 |
| 496 | Differential Equations | 4 | 3 | 944 | 2016 |
| 496 | Biotransformation | 1 | 3 | 321 | 668 |
| 496 | Radio wave propagation | 1 | 3 | 1565 | 2162 |
| 496 | Global warming | 1 | 3 | 354 | 633 |
| 496 | Magnetism | 1 | 3 | 266 | 255 |
| 496 | Interfaces | 1 | 3 | 732 | 1199 |
| 496 | Carbon | 1 | 3 | 2396 | 3396 |
| 496 | population geography | 1 | 3 | 823 | 1264 |
| 496 | enzymes | 1 | 3 | 2921 | 4342 |
| 496 | Investments | 1 | 3 | 1268 | 1915 |
| 511 | Political Science | 1 | 2 | 3299 | 3859 |
| 511 | Civil Engineering | 1 | 2 | 3302 | 4140 |
| 511 | Higher Education | 1 | 2 | 1126 | 1817 |
| 511 | Nanoelectronics | 1 | 2 | 1634 | 2272 |
| 511 | Educational Technology | 1 | 2 | 3053 | 4535 |
| 511 | Animal Nutrition | 1 | 2 | 1123 | 1744 |
| 511 | Psychopharmacology | 4 | 2 | 1809 | 4210 |
| 511 | Statistical Mechanics | 1 | 2 | 2186 | 2832 |
| 511 | Boundary Value Problems | 2 | 2 | 574 | 1168 |
| 511 | Combustion | 1 | 2 | 2201 | 3119 |
| 511 | Microbial Biotechnology | 1 | 2 | 2045 | 3210 |
| 511 | Flexible manufacturing systems | 2 | 2 | 552 | 1562 |
| 511 | Biodegradation | 1 | 2 | 1561 | 2617 |
| 511 | Neuropharmacology | 4 | 2 | 589 | 2029 |
| 511 | Real Estate Investment | 1 | 2 | 345 | 572 |
| 511 | Crystallography | 1 | 2 | 2965 | 3552 |
| 511 | starch | 1 | 2 | 788 | 1327 |
| 511 | Semigroups | 1 | 2 | 560 | 746 |
| 511 | Optoelectronic devices | 1 | 2 | 1762 | 2401 |
| 511 | child abuse | 1 | 2 | 1708 | 2730 |
| 511 | Semiconductor industry | 1 | 2 | 1278 | 1888 |
| 511 | Instructional systems | 1 | 2 | 356 | 707 |
| 511 | Aquaculture | 1 | 2 | 2585 | 3694 |
| 534 | Hydrogeology | 1 | 1 | 1423 | 2227 |
| 534 | Climatology | 1 | 1 | 3198 | 4763 |
| 534 | Fluid Mechanics | 1 | 1 | 3041 | 4375 |
| 534 | Health Policy | 1 | 1 | 5017 | 7414 |
| 534 | Fluid Dynamics | 2 | 1 | 1671 | 3235 |
| 534 | Probability | 2 | 1 | 895 | 2145 |
| 534 | Particle Physics | 1 | 1 | 1463 | 1900 |
| 534 | Environmental Economics | 1 | 1 | 992 | 1734 |
| 534 | Risk Management | 1 | 1 | 1698 | 3020 |
| 534 | Number Theory | 1 | 1 | 1532 | 2032 |
| 534 | Geochemistry | 1 | 1 | 3416 | 4922 |
| 534 | emergency management | 1 | 1 | 1921 | 3385 |
| 534 | Operator theory | 2 | 1 | 600 | 1145 |
| 534 | Chemical kinetics | 1 | 1 | 1502 | 2243 |
| 534 | Technological Innovations | 1 | 1 | 2124 | 3482 |
| 534 | Flood forecasting | 1 | 1 | 278 | 729 |
| 534 | Celestial Mechanics | 1 | 1 | 389 | 633 |
| 534 | Flood control | 1 | 1 | 665 | 1273 |
| 534 | Groundwater | 1 | 1 | 1373 | 2247 |
| 534 | Germany | 1 | 1 | 1605 | 2228 |
| 534 | Natural history | 3 | 1 | 5395 | 10299 |
| 534 | United Kingdom | 1 | 1 | 3402 | 4958 |
| 556 | Petroleum Engineering | 1 | 0 | 1434 | 2290 |
| 556 | Computer Engineering | 1 | 0 | 1805 | 2964 |
| 556 | Tribology | 1 | 0 | 2143 | 3218 |
| 556 | Cryptography | 1 | 0 | 1297 | 1977 |
| 556 | Combinatorial chemistry | 1 | 0 | 1827 | 2994 |
| 556 | Translation | 2 | 0 | 200 | 421 |
| 556 | E-Learning | 1 | 0 | 97 | 351 |
| 556 | Sensor Networks | 2 | 0 | 352 | 1058 |
| 556 | Bioinorganic chemistry | 1 | 0 | 2514 | 3695 |
| 556 | Microstructure | 1 | 0 | 1757 | 2637 |
| 556 | Web-based instruction | 1 | 0 | 131 | 465 |
| 556 | Microscopy | 1 | 0 | 3363 | 4919 |
| 556 | Structure-activity relationship | 1 | 0 | 1012 | 1779 |
| 556 | World Wide Web | 1 | 0 | 973 | 1906 |
| 556 | India | 1 | 0 | 3750 | 5294 |
| 556 | Muscle contraction | 1 | 0 | 733 | 1334 |
