| 1 | Catalysis | 133 | 13.7K | 585 | 275 |
| 2 | Nanotechnology | 45 | 5.6K | 1690 | 873 |
| 3 | Chemical Engineering | 121 | 5.3K | 751 | 690 |
| 4 | Materials | 45 | 4.0K | 2200 | 1295 |
| 5 | Biochemical Engineering | 71 | 3.8K | 561 | 753 |
| 6 | nanoscience | 21 | 3.8K | 1293 | 531 |
| 7 | Materials Science | 32 | 3.6K | 1944 | 927 |
| 8 | Biocompatible Materials | 19 | 3.4K | 1944 | 898 |
| 9 | Chemistry | 98 | 3.0K | 2548 | 2969 |
| 10 | Surface Chemistry | 50 | 2.9K | 1102 | 718 |
| 10 | Colloids | 50 | 2.9K | 1092 | 775 |
| 12 | Pollution | 43 | 2.7K | 1770 | 1508 |
| 13 | Energy Policy | 31 | 2.3K | 726 | 502 |
| 14 | Environmental Health | 36 | 2.0K | 1875 | 1537 |
| 15 | Nanostructured Materials | 22 | 1.9K | 1503 | 865 |
| 16 | Mathematics | 185 | 1.8K | 946 | 1065 |
| 17 | Environmental Engineering | 19 | 1.6K | 1777 | 1058 |
| 18 | Physics | 67 | 1.5K | 3229 | 5156 |
| 19 | sanitation | 8 | 1.4K | 1150 | 646 |
| 20 | Ecology | 42 | 1.4K | 2224 | 2688 |
| 21 | Science | 70 | 1.2K | 3297 | 5808 |
| 22 | environmental pollution | 34 | 1.2K | 1567 | 1702 |
| 23 | Renewable Energy Sources | 19 | 1.1K | 1007 | 1145 |
| 24 | vibration | 13 | 1.1K | 587 | 213 |
| 25 | Artificial Intelligence | 60 | 967 | 773 | 1099 |
| 26 | Environmental Management | 24 | 906 | 1012 | 1201 |
| 27 | System analysis | 34 | 890 | 631 | 564 |
| 28 | energy resources | 9 | 839 | 829 | 636 |
| 29 | Environmental monitoring | 22 | 805 | 1694 | 1780 |
| 30 | Structural dynamics | 5 | 785 | 916 | 350 |
| 31 | Research | 43 | 775 | 3501 | 4683 |
| 32 | Environment | 25 | 739 | 2194 | 3281 |
| 33 | Biochemistry | 36 | 733 | 4154 | 4908 |
| 34 | China | 43 | 708 | 649 | 782 |
| 35 | Fuzzy systems | 45 | 701 | 171 | 194 |
| 36 | Optics | 22 | 695 | 2413 | 1646 |
| 37 | actuators | 12 | 680 | 1253 | 923 |
| 37 | transducers | 12 | 680 | 1253 | 923 |
| 39 | Medicine | 40 | 655 | 4517 | 6591 |
| 40 | Statistical physics | 30 | 654 | 1583 | 1549 |
| 41 | coal | 20 | 652 | 569 | 679 |
| 42 | Automation | 14 | 635 | 909 | 659 |
| 43 | management | 28 | 626 | 1212 | 1520 |
| 44 | Pharmacology | 14 | 607 | 3560 | 3068 |
| 45 | Biology | 25 | 597 | 5316 | 7128 |
| 45 | Electrochemistry | 13 | 597 | 2464 | 1728 |
| 47 | Industrial Engineering | 15 | 571 | 859 | 652 |
| 48 | Environmental Policy | 20 | 557 | 1330 | 1928 |
| 49 | Electronics | 23 | 533 | 1628 | 1343 |
| 50 | Economics | 49 | 530 | 1287 | 1692 |
| 51 | Neural circuitry | 11 | 522 | 1077 | 825 |
| 52 | computer networks | 15 | 513 | 1174 | 878 |
| 53 | mathematical analysis | 49 | 511 | 679 | 760 |
| 54 | Biotechnology | 33 | 491 | 2525 | 4116 |
| 55 | Economic History | 40 | 484 | 1013 | 1211 |
| 56 | Social Change | 6 | 481 | 708 | 500 |
| 57 | energy conservation | 9 | 476 | 1195 | 1061 |
| 58 | Information Science | 10 | 459 | 1559 | 1143 |
| 59 | Investment analysis | 20 | 448 | 117 | 221 |
| 60 | Nuclear Physics | 21 | 441 | 2412 | 2369 |
| 61 | Analytical Chemistry | 24 | 430 | 2146 | 2719 |
| 62 | Operations Research | 37 | 423 | 620 | 1048 |
| 63 | Mathematical Physics | 35 | 420 | 1023 | 1277 |
| 64 | Bioengineering | 22 | 413 | 2021 | 3313 |
| 65 | Biomedical Engineering | 32 | 412 | 1830 | 2947 |
| 66 | Water | 13 | 408 | 1419 | 1824 |
| 67 | environmental indicators | 7 | 399 | 780 | 605 |
| 68 | Systems Engineering | 36 | 395 | 421 | 758 |
| 69 | Water pollution | 12 | 375 | 1662 | 1910 |
| 70 | Cybernetics | 18 | 369 | 468 | 603 |
| 71 | Nonlinear functional analysis | 14 | 368 | 499 | 397 |
| 72 | Engineering | 30 | 364 | 1507 | 1920 |
| 73 | Sustainable Engineering | 9 | 362 | 1027 | 994 |
| 73 | environmental protection | 21 | 362 | 1433 | 2251 |
| 75 | Green Chemistry | 7 | 352 | 1334 | 1271 |
| 76 | Neurochemistry | 5 | 347 | 2313 | 1807 |
| 77 | Toxicology | 11 | 339 | 3418 | 3521 |
| 78 | commerce | 19 | 329 | 509 | 814 |
| 78 | Developing countries | 7 | 329 | 1854 | 1274 |
| 80 | clay | 2 | 316 | 1118 | 471 |
| 81 | Health Information Management | 4 | 310 | 225 | 335 |
| 81 | Intelligent Control Systems | 19 | 310 | 259 | 234 |
| 83 | Molecular Biology | 17 | 307 | 5034 | 6777 |
| 84 | Statistics | 49 | 303 | 703 | 1432 |
| 85 | Image Processing | 11 | 301 | 1167 | 1220 |
| 86 | Neurology | 8 | 296 | 4548 | 4441 |
| 87 | Internet of Things | 7 | 294 | 433 | 271 |
| 87 | internet | 7 | 294 | 820 | 538 |
| 89 | Biomass Energy | 10 | 292 | 1597 | 1955 |
| 90 | air quality management | 2 | 285 | 842 | 255 |
| 91 | Education | 4 | 282 | 4294 | 1748 |
| 92 | Wireless Communication Systems | 8 | 277 | 1461 | 908 |
| 92 | Medicinal plants | 7 | 277 | 1049 | 1034 |
| 94 | food technology | 12 | 276 | 1491 | 1823 |
| 95 | Pharmacognosy | 6 | 266 | 1564 | 1408 |
| 96 | city planning | 12 | 264 | 835 | 854 |
| 97 | Measurement | 11 | 262 | 614 | 610 |
| 98 | Intelligent Transportation Systems | 3 | 258 | 850 | 342 |
| 98 | fuel cells | 3 | 258 | 1452 | 1067 |
| 98 | Eastern Europe | 16 | 258 | 282 | 192 |
| 101 | Process Control | 3 | 255 | 972 | 757 |
| 101 | Production Management | 3 | 255 | 1225 | 947 |
| 103 | Food | 9 | 249 | 2264 | 2417 |
| 104 | economic policy | 17 | 248 | 1146 | 1123 |
| 105 | Functional Analysis | 14 | 237 | 636 | 641 |
| 106 | Production Engineering | 20 | 227 | 718 | 1053 |
| 107 | carbon monoxide | 3 | 225 | 337 | 223 |
| 108 | Nanoparticles | 8 | 222 | 1344 | 1502 |
| 109 | Pharmaceutical Chemistry | 10 | 219 | 2920 | 3459 |
| 110 | finance | 14 | 216 | 1184 | 1371 |
| 111 | Fractals | 6 | 209 | 945 | 667 |
| 112 | Solitons | 5 | 207 | 901 | 602 |
| 112 | Chaos | 5 | 207 | 901 | 602 |
| 114 | Asia | 26 | 205 | 835 | 1381 |
| 115 | Organizational learning | 22 | 204 | 34 | 115 |
| 115 | Knowledge management | 22 | 204 | 28 | 62 |
| 117 | Urban Policy | 6 | 200 | 542 | 573 |
| 118 | Combinatorial optimization | 15 | 196 | 111 | 106 |
| 119 | Manufacturing Processes | 16 | 192 | 1090 | 1696 |
| 120 | Organic Chemistry | 10 | 189 | 2346 | 2625 |
| 121 | Remote Sensing | 2 | 181 | 2196 | 791 |
| 122 | Spectrum analysis | 11 | 179 | 3146 | 3698 |
| 123 | Water quality management | 5 | 178 | 1645 | 1237 |
| 123 | Earth Sciences | 9 | 178 | 2379 | 2610 |
| 125 | Social Sciences | 18 | 173 | 1695 | 2132 |
| 126 | Robotics | 7 | 168 | 1250 | 1242 |
| 127 | Business | 9 | 166 | 1452 | 1895 |
| 128 | Engineering Mathematics | 33 | 164 | 648 | 1434 |
| 128 | Biomass | 3 | 164 | 747 | 738 |
| 130 | Optical materials | 7 | 158 | 2116 | 2535 |
| 131 | Biophysics | 7 | 154 | 5208 | 5552 |
| 132 | Nanostructures | 11 | 151 | 1313 | 2169 |
| 133 | Microbiology | 12 | 149 | 4681 | 7218 |
| 134 | Securities | 4 | 144 | 256 | 261 |
| 134 | Chemical industry | 8 | 144 | 937 | 884 |
| 136 | Pharmacy | 6 | 142 | 1927 | 2071 |
| 137 | Production Planning | 1 | 140 | 589 | 248 |
| 137 | Production Control | 1 | 140 | 575 | 247 |
| 139 | Mineral resources | 8 | 136 | 245 | 560 |
| 140 | Sustainable Development | 18 | 134 | 721 | 2131 |
| 140 | Bioorganic chemistry | 4 | 134 | 2980 | 2934 |
| 140 | Molecular Spectroscopy | 9 | 134 | 1167 | 1557 |
| 143 | stocks | 3 | 128 | 108 | 137 |
| 144 | Mechanical Engineering | 14 | 126 | 1363 | 1697 |
| 144 | environmental exposure | 4 | 126 | 2105 | 2143 |
| 146 | lasers | 9 | 125 | 1279 | 1356 |
| 147 | Technology | 12 | 124 | 2719 | 3887 |
| 147 | Crystal growth | 2 | 124 | 1431 | 987 |
| 149 | Composite Materials | 4 | 123 | 2758 | 2892 |
| 150 | International Finance | 11 | 120 | 905 | 1432 |
| 151 | Dynamics | 19 | 118 | 676 | 1269 |
| 152 | health planning | 9 | 117 | 1422 | 1982 |
| 153 | Polymers | 11 | 116 | 3197 | 4268 |
| 153 | Quality Control | 3 | 116 | 2244 | 1844 |
| 155 | Econometrics | 6 | 115 | 1108 | 1103 |
| 156 | Industrial Microbiology | 6 | 113 | 1640 | 2476 |
| 156 | Land use | 6 | 113 | 891 | 1258 |
| 158 | sustainability | 2 | 111 | 1221 | 1118 |
| 159 | Humanities | 13 | 109 | 778 | 973 |
| 159 | Surface-Active Agents | 4 | 109 | 1062 | 1398 |
| 159 | Surface properties | 4 | 109 | 1142 | 1519 |
| 162 | polymerization | 9 | 108 | 2930 | 3678 |
| 163 | Signal Processing | 12 | 107 | 1062 | 1738 |
| 164 | Photochemistry | 4 | 105 | 1916 | 1927 |
| 164 | Photobiology | 4 | 105 | 1460 | 1458 |
| 166 | Environmental Toxicology | 4 | 103 | 2639 | 3263 |
| 166 | Physical Chemistry | 4 | 103 | 2417 | 2457 |
| 166 | pollutants | 3 | 103 | 2327 | 2428 |
| 166 | Environmental pollutants | 3 | 103 | 2806 | 2781 |
| 170 | Electrophysiology | 1 | 100 | 2321 | 1139 |
| 171 | Brain | 3 | 99 | 3259 | 3281 |
| 172 | Geriatrics | 2 | 98 | 4652 | 3299 |
| 172 | Hydrology | 5 | 98 | 2415 | 2604 |
| 172 | older people | 2 | 98 | 2595 | 1389 |
| 175 | Environmental Geology | 4 | 95 | 1591 | 1766 |
| 176 | soil conservation | 4 | 94 | 752 | 915 |
| 177 | marketing | 8 | 93 | 1306 | 1960 |
| 178 | foods | 1 | 91 | 690 | 218 |
| 179 | Information Technology | 8 | 88 | 1760 | 2273 |
| 180 | drugs | 3 | 86 | 2892 | 2797 |
| 181 | Clinical Chemistry | 3 | 85 | 3795 | 3972 |
| 181 | global environmental change | 1 | 85 | 1721 | 1357 |
| 181 | environmental issues | 1 | 85 | 976 | 617 |
| 184 | land degradation | 3 | 83 | 570 | 676 |
| 184 | degradation | 3 | 83 | 570 | 676 |
| 186 | Rock Mechanics | 3 | 82 | 1017 | 1027 |
| 186 | Developmental Neurobiology | 1 | 82 | 1238 | 679 |
| 188 | Engineering Geology | 2 | 81 | 1925 | 1656 |
| 188 | Computational Complexity | 14 | 81 | 361 | 815 |
| 190 | Control Theory | 10 | 78 | 1066 | 1522 |
| 190 | mass transfer | 6 | 78 | 1362 | 1990 |
| 192 | Sociology | 8 | 75 | 2249 | 3528 |
| 193 | Numerical Analysis | 16 | 74 | 1124 | 2179 |
| 193 | infrared radiation | 5 | 74 | 500 | 542 |
| 193 | Europe | 3 | 74 | 4267 | 3651 |
| 196 | miniaturization | 6 | 73 | 1580 | 2789 |
| 197 | Ecological Engineering | 1 | 72 | 1343 | 1120 |
| 198 | Telecommunication | 12 | 70 | 1240 | 2137 |
| 199 | Mobile Computing | 7 | 68 | 754 | 1049 |
| 200 | Electrical Engineering | 7 | 67 | 2890 | 2794 |
| 200 | Imaging systems | 7 | 67 | 436 | 651 |
| 200 | Detectors | 7 | 67 | 579 | 816 |
| 200 | Molecular structure | 3 | 67 | 3047 | 3047 |
| 200 | Behavior | 5 | 67 | 3226 | 5000 |
| 205 | Information Systems | 2 | 66 | 2234 | 1911 |
| 206 | human behavior | 4 | 64 | 2653 | 4254 |
| 206 | Financial Institutions | 1 | 64 | 852 | 508 |
| 208 | Geomorphology | 2 | 63 | 1865 | 1989 |
| 208 | Soil Science | 2 | 63 | 2589 | 2485 |
| 210 | Transportation | 3 | 62 | 1937 | 2033 |
| 211 | Public Health | 5 | 60 | 6215 | 8222 |
| 211 | Analytical Biochemistry | 6 | 60 | 1536 | 2552 |
| 213 | Psychology | 8 | 59 | 4098 | 6485 |
| 213 | Educational Leadership | 1 | 59 | 365 | 137 |
| 213 | Social Psychology | 5 | 59 | 1922 | 2906 |
| 216 | economic indicators | 3 | 58 | 120 | 96 |
| 216 | soil microbiology | 1 | 58 | 2781 | 2782 |
| 216 | particles | 4 | 58 | 981 | 1329 |
| 216 | Granular materials | 3 | 58 | 651 | 896 |
| 216 | Plant diseases | 1 | 58 | 3322 | 2401 |
| 216 | Mountains | 3 | 58 | 471 | 376 |
| 216 | Decision making | 8 | 58 | 972 | 2059 |
| 223 | Technology Assessment | 3 | 57 | 368 | 719 |
| 224 | Computer Graphics | 3 | 56 | 1941 | 2044 |
| 224 | Solid State Physics | 2 | 56 | 4771 | 4165 |
| 226 | Health Services Research | 1 | 55 | 3704 | 2605 |
| 226 | Primary health care | 1 | 55 | 3823 | 2638 |
| 226 | Consumer education | 1 | 55 | 758 | 609 |
| 226 | drug development | 1 | 55 | 2340 | 2433 |
| 230 | Molecules | 4 | 54 | 1641 | 1713 |
| 230 | Australia | 5 | 54 | 1859 | 2464 |
| 232 | Computational Intelligence | 12 | 53 | 313 | 1083 |
| 232 | Corporate Social Responsibility | 3 | 53 | 284 | 662 |
| 232 | environmental auditing | 3 | 53 | 300 | 671 |
| 232 | planning | 3 | 53 | 860 | 915 |
| 232 | Metals | 4 | 53 | 2417 | 2920 |
| 237 | Computational Biology | 12 | 52 | 1796 | 4407 |
| 237 | Green Technology | 3 | 52 | 473 | 577 |
| 237 | Microcirculation | 1 | 52 | 1065 | 828 |
| 237 | Blood vessels | 1 | 52 | 890 | 676 |
| 241 | Cytology | 3 | 51 | 5228 | 6571 |
| 241 | Tissue Engineering | 1 | 51 | 716 | 547 |
| 241 | Regenerative Medicine | 1 | 51 | 378 | 167 |
| 241 | Chromatographic analysis | 3 | 51 | 2397 | 2574 |
| 245 | Energy Storage | 3 | 50 | 1486 | 1772 |
| 245 | Ultrasonics | 2 | 50 | 1570 | 1935 |
| 245 | Sonochemistry | 2 | 50 | 866 | 1340 |
| 248 | Medical Laboratory Science | 2 | 49 | 3180 | 3635 |
| 248 | Social policy | 3 | 49 | 1198 | 1239 |
| 250 | Economic Geography | 2 | 48 | 522 | 518 |
| 250 | Urban Economics | 2 | 48 | 504 | 644 |
| 250 | Visual Communication | 2 | 48 | 683 | 546 |
| 250 | Nuclear Fusion | 4 | 48 | 651 | 752 |
| 250 | Labor Economics | 2 | 48 | 714 | 692 |
| 250 | Tourism | 4 | 48 | 1544 | 2349 |
| 250 | Image enhancement | 2 | 48 | 470 | 500 |
| 250 | Urbanization | 2 | 48 | 364 | 288 |
| 250 | Globalization | 2 | 48 | 840 | 906 |
| 250 | Communication | 2 | 48 | 2995 | 2566 |
| 260 | Diagnostic Imaging | 6 | 47 | 1918 | 3068 |
| 261 | Energy Conversion | 2 | 46 | 1618 | 2083 |
| 261 | Public Policy | 3 | 46 | 2260 | 2978 |
| 261 | United States | 3 | 46 | 7098 | 7431 |
| 264 | Nutrition | 2 | 45 | 6412 | 6799 |
| 264 | Electrophoresis | 2 | 45 | 2490 | 2702 |
| 264 | Nonlinear Dynamics | 8 | 45 | 1681 | 2814 |
| 264 | Chromatography | 2 | 45 | 2474 | 2519 |
| 264 | Communist countries | 4 | 45 | 190 | 221 |
| 264 | economic analysis | 4 | 45 | 214 | 383 |
| 264 | Soviet Union | 4 | 45 | 706 | 605 |
| 264 | Biodiversity | 2 | 45 | 3296 | 3549 |
| 272 | Soil Mechanics | 4 | 44 | 1121 | 1591 |
| 272 | Plant Genetics | 1 | 44 | 1314 | 1351 |
| 272 | Plant physiology | 1 | 44 | 3487 | 3426 |
| 272 | plant molecular biology | 1 | 44 | 2662 | 2858 |
| 272 | Chemical reactors | 7 | 44 | 17 | 29 |
| 272 | Economic planning | 2 | 44 | 709 | 821 |
| 278 | Medical Technology | 1 | 43 | 4049 | 3286 |
| 279 | Logistics | 1 | 42 | 1071 | 966 |
| 279 | Cell Biology | 2 | 42 | 5763 | 6743 |
| 279 | Strategic planning | 5 | 42 | 603 | 1179 |
| 282 | Geology | 5 | 41 | 2944 | 4020 |
| 282 | Algorithms | 3 | 41 | 844 | 923 |
| 282 | Multivariate Analysis | 4 | 41 | 467 | 709 |
| 282 | reasoning | 1 | 41 | 850 | 585 |
| 286 | Geography | 4 | 40 | 2482 | 3384 |
| 286 | Bifurcation Theory | 7 | 40 | 400 | 788 |
| 286 | Porous materials | 3 | 40 | 886 | 1029 |
| 286 | Metallography | 3 | 40 | 949 | 1354 |
| 290 | Regional Planning | 2 | 39 | 2201 | 2194 |
| 290 | Physical organic chemistry | 2 | 39 | 1941 | 2084 |
| 290 | Multimedia Systems | 5 | 39 | 1508 | 2131 |
| 290 | probabilities | 7 | 39 | 975 | 1318 |
| 294 | Applied Mathematics | 15 | 38 | 285 | 711 |
| 294 | Immunotherapy | 1 | 38 | 3625 | 3574 |
| 294 | Immunopharmacology | 1 | 38 | 2150 | 2018 |
| 294 | Food service management | 1 | 38 | 758 | 906 |
| 294 | cytokines | 1 | 38 | 2646 | 2642 |
| 299 | Epidemiology | 3 | 37 | 5078 | 6738 |
| 299 | Telecommunication Systems | 4 | 37 | 1596 | 2047 |
| 301 | Vocational guidance | 1 | 36 | 1640 | 1420 |
| 301 | Psychophysiology | 3 | 36 | 3547 | 4847 |
| 303 | Diet | 1 | 35 | 4280 | 4270 |
| 303 | Nonlinear systems | 5 | 35 | 485 | 876 |
| 305 | Educational Psychology | 3 | 34 | 1601 | 2167 |
| 305 | Drug design | 2 | 34 | 2651 | 3211 |
| 305 | peptides | 1 | 34 | 1916 | 1516 |
| 305 | proteins | 1 | 34 | 4042 | 3692 |
| 309 | Human Geography | 1 | 33 | 2098 | 1596 |
| 309 | Condensed Matter | 4 | 33 | 3475 | 4258 |
| 311 | Attention | 1 | 32 | 3889 | 3579 |
| 311 | Catalysts | 2 | 32 | 975 | 1167 |
| 313 | Transnational corporations | 1 | 31 | 756 | 723 |
| 314 | Genetics | 1 | 30 | 7131 | 7213 |
| 314 | Information Theory | 4 | 30 | 1243 | 1799 |
| 314 | Photonics | 1 | 30 | 2950 | 2951 |
| 314 | Entropy | 2 | 30 | 1617 | 1686 |
| 314 | heredity | 1 | 30 | 1521 | 1372 |
| 314 | Evolution | 1 | 30 | 3611 | 3669 |
| 320 | Biosensors | 2 | 29 | 1832 | 3016 |
| 320 | Quantum Chemistry | 2 | 29 | 1331 | 1242 |
| 322 | Child | 1 | 28 | 4987 | 4373 |
| 322 | machinery | 4 | 28 | 758 | 1323 |
| 322 | Information society | 1 | 28 | 386 | 335 |
| 322 | Cognition | 1 | 28 | 3064 | 3024 |
| 322 | children | 1 | 28 | 1142 | 1031 |
| 327 | Microelectronics | 2 | 27 | 2527 | 3100 |
| 327 | Metallurgy | 4 | 27 | 2699 | 3668 |
| 327 | curriculum evaluation | 1 | 27 | 708 | 648 |
| 330 | Human-Computer Interaction | 5 | 26 | 1340 | 2789 |
| 330 | Teaching | 1 | 26 | 3444 | 2702 |
| 330 | East Asia | 2 | 26 | 954 | 952 |
| 330 | thinking | 1 | 26 | 601 | 601 |
| 330 | synthesis | 2 | 26 | 1545 | 1542 |
| 330 | Creativity | 1 | 26 | 639 | 695 |
| 336 | Total Quality Management | 2 | 25 | 799 | 1191 |
| 336 | North America | 2 | 25 | 1449 | 1763 |
| 338 | Social work | 3 | 24 | 1820 | 2441 |
| 339 | Educational Sociology | 1 | 23 | 745 | 636 |
| 339 | consumer behavior | 1 | 23 | 1070 | 1220 |
| 339 | Organometallic chemistry | 3 | 23 | 2305 | 3072 |
| 339 | biomedicine | 2 | 23 | 1464 | 2183 |
| 343 | technology transfer | 2 | 22 | 410 | 729 |
| 343 | Environmental Geochemistry | 1 | 22 | 1235 | 1345 |
| 343 | concrete | 1 | 22 | 1767 | 2006 |
| 343 | Cement | 1 | 22 | 1130 | 1384 |
| 343 | Minerals | 1 | 22 | 1633 | 1751 |
| 343 | hygiene | 1 | 22 | 1216 | 1343 |
| 349 | Bioremediation | 2 | 21 | 1272 | 2097 |
| 349 | Smart Materials | 3 | 21 | 1080 | 1825 |
| 349 | Neuroplasticity | 1 | 21 | 876 | 1057 |
| 349 | neuronal plasticity | 1 | 21 | 733 | 950 |
| 349 | Japan | 1 | 21 | 4079 | 3543 |
| 354 | Immunology | 1 | 20 | 6471 | 6948 |
| 354 | Serology | 1 | 20 | 1175 | 1255 |
| 354 | Pharmaceutical Technology | 1 | 20 | 2812 | 3162 |
| 354 | Pharmacokinetics | 1 | 20 | 2087 | 2239 |
| 354 | Geographic information systems | 1 | 20 | 2254 | 2082 |
| 354 | Simulation Methods | 1 | 20 | 2078 | 2021 |
| 354 | Bacteriology | 1 | 20 | 3590 | 4331 |
| 354 | drug evaluation | 1 | 20 | 2757 | 3085 |
| 362 | Materials Engineering | 4 | 19 | 688 | 1416 |
| 362 | Water quality | 1 | 19 | 631 | 746 |
| 362 | Ocean Engineering | 1 | 19 | 2772 | 3060 |
| 362 | Emulsions | 1 | 19 | 832 | 748 |
| 362 | Bioelectronics | 1 | 19 | 2094 | 2941 |
| 362 | Water chemistry | 1 | 19 | 907 | 944 |
| 362 | Aquatic ecology | 1 | 19 | 1879 | 2001 |
| 369 | Astrophysics | 4 | 18 | 3293 | 4763 |
| 369 | Forecasting | 3 | 18 | 620 | 1159 |
| 369 | Obesity | 1 | 18 | 3932 | 4794 |
| 369 | Eating Disorders | 1 | 18 | 1688 | 1974 |
| 369 | Feeding and Eating Disorders | 1 | 18 | 1623 | 1905 |
| 369 | feeding behavior | 1 | 18 | 1552 | 1945 |
| 375 | Urban Planning | 1 | 17 | 802 | 1004 |
| 375 | Structural design | 1 | 17 | 1593 | 1736 |
| 375 | Industrial Safety | 1 | 17 | 2552 | 2532 |
| 375 | health services accessibility | 1 | 17 | 2114 | 2323 |
| 375 | community development | 1 | 17 | 1205 | 1200 |
| 375 | Cognitive Science | 2 | 17 | 2202 | 3288 |
| 375 | Socioeconomic Factors | 1 | 17 | 1731 | 2222 |
| 375 | Microprocessors | 1 | 17 | 1149 | 1156 |
| 375 | Fractional Calculus | 3 | 17 | 146 | 369 |
| 375 | Evolutionary Computation | 2 | 17 | 553 | 1007 |
| 375 | Swarm Intelligence | 2 | 17 | 372 | 780 |
| 375 | Housing | 1 | 17 | 956 | 1156 |
| 375 | Population | 1 | 17 | 2266 | 2303 |
| 375 | Developed countries | 1 | 17 | 462 | 581 |
| 389 | Algebra | 4 | 16 | 1528 | 1771 |
| 389 | Corporate governance | 1 | 16 | 1204 | 1435 |
| 389 | Agriculture | 5 | 16 | 2277 | 4617 |
| 392 | Computer Science | 9 | 15 | 1407 | 4010 |
| 392 | Rural Development | 2 | 15 | 882 | 1273 |
| 392 | Ceramics | 1 | 15 | 2726 | 2835 |
| 392 | Environmental Law | 1 | 15 | 2310 | 3080 |
| 392 | Fixed Point Theory | 6 | 15 | 174 | 462 |
| 392 | Glass | 1 | 15 | 2063 | 2400 |
| 392 | pottery | 1 | 15 | 1987 | 2325 |
| 399 | Physiology | 2 | 14 | 5956 | 8174 |
| 399 | Physical Geography | 1 | 14 | 1199 | 1241 |
| 399 | Calculus of Variations | 4 | 14 | 476 | 789 |
| 399 | Entrepreneurship | 1 | 14 | 1912 | 2268 |
| 399 | Small Business | 1 | 14 | 1340 | 1819 |
| 399 | Mechanics | 3 | 14 | 1634 | 2386 |
| 399 | Korea | 4 | 14 | 325 | 786 |
| 399 | econometric models | 2 | 14 | 873 | 1408 |
| 407 | Economic Development | 4 | 13 | 1761 | 3744 |
| 407 | Microbial Metabolism | 1 | 13 | 486 | 852 |
| 407 | Organometallic compounds | 1 | 13 | 2122 | 2455 |
| 407 | biological factors | 1 | 13 | 3597 | 4353 |
| 411 | Nanochemistry | 2 | 12 | 1729 | 2807 |
| 411 | Supply Chain Management | 2 | 12 | 90 | 239 |
| 411 | Alternative Medicine | 1 | 12 | 3740 | 4595 |
| 411 | complementary therapies | 1 | 12 | 4104 | 4883 |
| 411 | motivation | 1 | 12 | 661 | 918 |
| 411 | radioactive waste | 1 | 12 | 1615 | 2517 |
| 411 | Learning | 1 | 12 | 2659 | 3137 |
| 411 | industrial waste | 1 | 12 | 1666 | 2521 |
| 411 | Hazardous waste | 1 | 12 | 1861 | 2724 |
| 420 | Mechatronics | 2 | 11 | 1027 | 1757 |
| 420 | Building Materials | 1 | 11 | 2668 | 3430 |
| 420 | Cosmology | 2 | 11 | 1908 | 2142 |
| 420 | Coastal zone management | 1 | 11 | 1398 | 1929 |
| 420 | Advertising | 1 | 11 | 681 | 963 |
| 420 | soil pollution | 1 | 11 | 1257 | 1613 |
| 420 | Magnetic Materials | 3 | 11 | 1678 | 2778 |
| 420 | Bioinformatics | 2 | 11 | 3141 | 4800 |
| 420 | Child psychology | 1 | 11 | 2906 | 3551 |
| 420 | Marine resources | 1 | 11 | 1424 | 1938 |
| 420 | X-rays | 4 | 11 | 711 | 1632 |
| 420 | natural products | 1 | 11 | 3153 | 3567 |
| 420 | Roads | 1 | 11 | 1407 | 1488 |
| 420 | Reproduction | 1 | 11 | 4386 | 5201 |
| 420 | Eurasia | 1 | 11 | 514 | 632 |
| 435 | Microbial Ecology | 1 | 10 | 4203 | 5702 |
| 435 | Analytical Toxicology | 1 | 10 | 550 | 842 |
| 435 | Environmental Chemistry | 2 | 10 | 3187 | 5072 |
| 435 | Sustainable agriculture | 3 | 10 | 883 | 2084 |
| 435 | nuclear astrophysics | 1 | 10 | 892 | 1082 |
| 435 | Child welfare | 1 | 10 | 2335 | 2860 |
| 435 | Adaptive control systems | 1 | 10 | 1145 | 1354 |
| 435 | international trade | 1 | 10 | 1439 | 1639 |
| 435 | Chemical processes | 1 | 10 | 1299 | 1661 |
| 435 | Stem cells | 1 | 10 | 3034 | 3859 |
| 435 | Adolescent | 1 | 10 | 4460 | 5085 |
| 446 | Neuropsychology | 1 | 9 | 4219 | 5268 |
| 446 | Neurophysiology | 1 | 9 | 4962 | 6202 |
| 446 | Solid State Chemistry | 1 | 9 | 3900 | 4552 |
| 446 | Fracture mechanics | 3 | 9 | 1621 | 3022 |
| 446 | Radiation | 1 | 9 | 4152 | 4817 |
| 446 | Synchrotron Radiation | 1 | 9 | 833 | 1057 |
| 446 | Mobile Commerce | 2 | 9 | 531 | 781 |
| 446 | Urban Areas | 1 | 9 | 524 | 703 |
| 454 | Database Management | 1 | 8 | 1472 | 1912 |
| 454 | Real Estate Development | 1 | 8 | 70 | 95 |
| 454 | Greenhouse gases | 1 | 8 | 735 | 1212 |
| 454 | sustainable construction | 1 | 8 | 30 | 55 |
| 454 | foreign exchange | 2 | 8 | 496 | 1020 |
| 459 | Electromagnetism | 2 | 7 | 1101 | 1762 |
| 459 | Biomechanics | 2 | 7 | 2266 | 3838 |
| 459 | Chemical analysis | 1 | 7 | 2295 | 3196 |
| 459 | Food preferences | 1 | 7 | 789 | 1264 |
| 459 | Electromagnetic fields | 2 | 7 | 480 | 816 |
| 459 | Ore deposits | 1 | 7 | 914 | 1252 |
| 459 | Recycling | 1 | 7 | 1228 | 2170 |
| 466 | Botany | 2 | 6 | 5080 | 7541 |
| 466 | Systems Analysis | 2 | 6 | 1631 | 3106 |
| 466 | Natural resources | 1 | 6 | 1551 | 2185 |
| 466 | Heat Exchangers | 1 | 6 | 2108 | 3104 |
| 466 | Waste management | 1 | 6 | 2716 | 3704 |
| 466 | Quantum Optics | 1 | 6 | 1622 | 2007 |
| 466 | Water Purification | 1 | 6 | 2184 | 3090 |
| 466 | Plastics | 2 | 6 | 2457 | 3887 |
| 466 | explosives | 1 | 6 | 519 | 643 |
| 466 | Atomic spectroscopy | 1 | 6 | 2079 | 2604 |
| 466 | Laser Spectroscopy | 1 | 6 | 1540 | 1914 |
| 466 | identity recognition | 1 | 6 | 60 | 128 |
| 478 | Nuclear Engineering | 1 | 5 | 2367 | 2780 |
| 478 | Geometry | 3 | 5 | 1413 | 2109 |
| 478 | Geophysics | 3 | 5 | 4195 | 7263 |
| 478 | Medical Microbiology | 1 | 5 | 4532 | 6317 |
| 478 | Oral Pathology | 1 | 5 | 214 | 431 |
| 478 | Nuclear Facilities | 1 | 5 | 171 | 218 |
| 478 | organization | 1 | 5 | 1423 | 2080 |
| 478 | Nanotubes | 1 | 5 | 483 | 759 |
| 486 | Telecommunications | 1 | 4 | 1686 | 2253 |
| 486 | Stochastic Processes | 4 | 4 | 893 | 2413 |
| 486 | Sports Medicine | 1 | 4 | 4673 | 5481 |
| 486 | Differential Equations | 4 | 4 | 944 | 1957 |
| 486 | food contamination | 1 | 4 | 2199 | 3144 |
| 486 | Ferroelectricity | 1 | 4 | 1654 | 1959 |
| 486 | Sports | 1 | 4 | 3730 | 4324 |
| 486 | Magnetism | 1 | 4 | 266 | 238 |
| 486 | Pesticides | 1 | 4 | 1437 | 2219 |
| 486 | Quality of life | 1 | 4 | 3137 | 4770 |
| 486 | Capital market | 1 | 4 | 803 | 1328 |
| 486 | population geography | 1 | 4 | 823 | 1241 |
| 486 | Money | 1 | 4 | 681 | 1176 |
| 486 | Investments | 1 | 4 | 1268 | 1836 |
| 486 | Exercise | 1 | 4 | 2618 | 3395 |
| 501 | Early Childhood Education | 1 | 3 | 1092 | 1579 |
| 501 | Thermodynamics | 2 | 3 | 1711 | 2925 |
| 501 | Nonparametric Statistics | 2 | 3 | 243 | 590 |
| 501 | Risk Management | 1 | 3 | 1698 | 2772 |
| 501 | Quantum electronics | 2 | 3 | 1594 | 2706 |
| 501 | Flexible manufacturing systems | 2 | 3 | 552 | 1540 |
| 501 | Biotransformation | 1 | 3 | 321 | 671 |
| 501 | Technological Innovations | 1 | 3 | 2124 | 3289 |
| 501 | Radio wave propagation | 1 | 3 | 1565 | 2173 |
| 501 | Global warming | 1 | 3 | 354 | 641 |
| 501 | Flood forecasting | 1 | 3 | 278 | 694 |
| 501 | Interfaces | 1 | 3 | 732 | 1216 |
| 501 | Flood control | 1 | 3 | 665 | 1169 |
| 501 | Carbon | 1 | 3 | 2396 | 3402 |
| 501 | Natural history | 3 | 3 | 5397 | 9845 |
| 501 | enzymes | 1 | 3 | 2921 | 4358 |
| 517 | Political Science | 1 | 2 | 3299 | 3894 |
| 517 | Civil Engineering | 1 | 2 | 3302 | 4181 |
| 517 | Hydrogeology | 1 | 2 | 1423 | 2162 |
| 517 | Fluid Mechanics | 1 | 2 | 3042 | 4256 |
| 517 | Higher Education | 1 | 2 | 1126 | 1847 |
| 517 | Fluid Dynamics | 2 | 2 | 1678 | 3170 |
| 517 | Nanoelectronics | 1 | 2 | 1647 | 2301 |
| 517 | Educational Technology | 1 | 2 | 3053 | 4588 |
| 517 | Animal Nutrition | 1 | 2 | 1123 | 1760 |
| 517 | Psychopharmacology | 4 | 2 | 1829 | 4261 |
| 517 | Statistical Mechanics | 1 | 2 | 2221 | 2873 |
| 517 | Boundary Value Problems | 2 | 2 | 574 | 1187 |
| 517 | Combustion | 1 | 2 | 2201 | 3140 |
| 517 | Microbial Biotechnology | 1 | 2 | 2045 | 3237 |
| 517 | Biodegradation | 1 | 2 | 1561 | 2634 |
| 517 | Neuropharmacology | 4 | 2 | 589 | 2040 |
| 517 | Real Estate Investment | 1 | 2 | 345 | 572 |
| 517 | Crystallography | 1 | 2 | 2965 | 3567 |
| 517 | starch | 1 | 2 | 788 | 1344 |
| 517 | Semigroups | 1 | 2 | 560 | 747 |
| 517 | Optoelectronic devices | 1 | 2 | 1762 | 2427 |
| 517 | Groundwater | 1 | 2 | 1373 | 2182 |
| 517 | child abuse | 1 | 2 | 1708 | 2753 |
| 517 | Semiconductor industry | 1 | 2 | 1278 | 1893 |
| 517 | Instructional systems | 1 | 2 | 356 | 715 |
| 517 | Aquaculture | 1 | 2 | 2585 | 3712 |
| 543 | Climatology | 1 | 1 | 3199 | 4794 |
| 543 | Health Policy | 1 | 1 | 5017 | 7461 |
| 543 | Probability | 2 | 1 | 895 | 2154 |
| 543 | Particle Physics | 1 | 1 | 1463 | 1903 |
| 543 | Environmental Economics | 1 | 1 | 992 | 1742 |
| 543 | Number Theory | 1 | 1 | 1532 | 2036 |
| 543 | Geochemistry | 1 | 1 | 3416 | 4937 |
| 543 | emergency management | 1 | 1 | 1923 | 3399 |
| 543 | Operator theory | 2 | 1 | 600 | 1154 |
| 543 | Bioinorganic chemistry | 1 | 1 | 2514 | 3650 |
| 543 | Chemical kinetics | 1 | 1 | 1502 | 2254 |
| 543 | Celestial Mechanics | 1 | 1 | 389 | 633 |
| 543 | Germany | 1 | 1 | 1605 | 2247 |
| 543 | United Kingdom | 1 | 1 | 3402 | 4980 |
| 557 | Petroleum Engineering | 1 | 0 | 1434 | 2292 |
| 557 | Computer Engineering | 1 | 0 | 1805 | 2974 |
| 557 | Tribology | 1 | 0 | 2143 | 3230 |
| 557 | Cryptography | 1 | 0 | 1297 | 1983 |
| 557 | Combinatorial chemistry | 1 | 0 | 1827 | 3005 |
| 557 | Translation | 2 | 0 | 200 | 427 |
| 557 | E-Learning | 1 | 0 | 97 | 355 |
| 557 | Sensor Networks | 2 | 0 | 352 | 1059 |
| 557 | Microstructure | 1 | 0 | 1757 | 2638 |
| 557 | Web-based instruction | 1 | 0 | 131 | 471 |
| 557 | Microscopy | 1 | 0 | 3363 | 4932 |
| 557 | Structure-activity relationship | 1 | 0 | 1012 | 1787 |
| 557 | World Wide Web | 1 | 0 | 973 | 1918 |
| 557 | India | 1 | 0 | 3750 | 5328 |
| 557 | Muscle contraction | 1 | 0 | 733 | 1340 |
