| 1 | Ecology | 22 | 2.5K | 3234 | 1926 |
| 2 | Physics | 62 | 2.5K | 3397 | 4161 |
| 3 | Medicine | 59 | 1.9K | 3632 | 3945 |
| 4 | Biochemistry | 63 | 1.7K | 3178 | 3488 |
| 5 | Energy Policy | 16 | 1.6K | 1238 | 706 |
| 6 | energy resources | 6 | 1.5K | 1065 | 415 |
| 7 | Biomass Energy | 29 | 1.5K | 764 | 726 |
| 8 | Environment | 23 | 1.4K | 2319 | 2343 |
| 9 | Biotechnology | 71 | 1.3K | 1505 | 2554 |
| 10 | Nuclear Physics | 38 | 1.3K | 1904 | 1601 |
| 11 | Biochemical Engineering | 18 | 950 | 1590 | 1899 |
| 12 | Nanotechnology | 9 | 940 | 3755 | 2349 |
| 13 | Food | 26 | 873 | 1130 | 1119 |
| 14 | Biology | 30 | 844 | 4863 | 6291 |
| 15 | Molecular Biology | 43 | 783 | 3291 | 4779 |
| 16 | nanoscience | 5 | 769 | 2755 | 1433 |
| 17 | food technology | 35 | 765 | 683 | 951 |
| 18 | Chemistry | 25 | 760 | 5188 | 5492 |
| 19 | Education | 35 | 722 | 1247 | 990 |
| 20 | Research | 24 | 705 | 4890 | 4918 |
| 21 | Materials | 18 | 641 | 3429 | 3091 |
| 22 | Biomedical Engineering | 26 | 628 | 2076 | 2317 |
| 23 | coal | 10 | 620 | 944 | 707 |
| 24 | Chemical Engineering | 17 | 588 | 2554 | 2518 |
| 25 | Renewable Energy Sources | 15 | 586 | 1232 | 1755 |
| 26 | Geophysics | 8 | 534 | 2897 | 1969 |
| 27 | Atmospheric Physics | 7 | 524 | 1332 | 897 |
| 28 | Statistical physics | 17 | 519 | 2084 | 1720 |
| 29 | Artificial Intelligence | 20 | 511 | 1695 | 1678 |
| 30 | Psychiatry | 22 | 498 | 2214 | 2743 |
| 31 | Toxicology | 15 | 488 | 2932 | 2916 |
| 32 | Plant physiology | 13 | 469 | 1208 | 1376 |
| 33 | Teaching | 8 | 466 | 1178 | 560 |
| 34 | Catalysis | 7 | 462 | 2860 | 2295 |
| 35 | Condensed Matter | 26 | 452 | 1714 | 1872 |
| 36 | Pollution | 23 | 428 | 2616 | 3923 |
| 37 | Environmental Policy | 6 | 423 | 2834 | 2276 |
| 38 | Europe | 12 | 421 | 2047 | 1463 |
| 39 | Neurology | 18 | 417 | 3191 | 3911 |
| 40 | Nanostructured Materials | 5 | 389 | 2935 | 2019 |
| 41 | Mental Disorders | 15 | 388 | 1799 | 2225 |
| 42 | Science | 16 | 380 | 7258 | 9010 |
| 43 | Diabetes mellitus | 6 | 375 | 2037 | 1821 |
| 43 | Diabetes | 6 | 375 | 2111 | 1891 |
| 45 | Microbiology | 27 | 370 | 3241 | 5220 |
| 46 | Quality of life | 5 | 366 | 1429 | 883 |
| 47 | Neural circuitry | 11 | 365 | 1077 | 1051 |
| 48 | Ophthalmology | 21 | 363 | 811 | 1155 |
| 49 | Plant diseases | 45 | 360 | 488 | 1002 |
| 50 | Nervous system | 18 | 355 | 1246 | 2010 |
| 51 | Social Sciences | 5 | 342 | 3631 | 1393 |
| 51 | Pharmacology | 19 | 342 | 3086 | 3938 |
| 53 | Mathematics | 44 | 341 | 2264 | 2688 |
| 54 | Sociology | 5 | 339 | 2908 | 1635 |
| 55 | Heat Exchangers | 5 | 331 | 1021 | 718 |
| 56 | Obstetrics | 15 | 328 | 1569 | 1641 |
| 56 | Solid State Physics | 9 | 328 | 2891 | 2293 |
| 56 | Measurement | 8 | 328 | 777 | 507 |
| 59 | Australia | 15 | 317 | 897 | 821 |
| 60 | Africa | 17 | 315 | 604 | 480 |
| 61 | environmental pollution | 12 | 312 | 2914 | 3527 |
| 62 | Nutrition | 14 | 310 | 2774 | 3311 |
| 63 | energy conservation | 9 | 309 | 1195 | 1410 |
| 64 | Plant tissue culture | 11 | 308 | 325 | 374 |
| 64 | Plant cell culture | 11 | 308 | 270 | 368 |
| 66 | Engineering Mathematics | 15 | 306 | 1239 | 940 |
| 67 | technical education | 8 | 301 | 251 | 134 |
| 68 | Environmental monitoring | 20 | 285 | 1803 | 3186 |
| 68 | software | 3 | 285 | 1182 | 580 |
| 70 | Food Preservation | 20 | 273 | 164 | 214 |
| 71 | Technology | 14 | 272 | 2474 | 2640 |
| 72 | Post-traumatic stress disorder | 1 | 271 | 1535 | 523 |
| 73 | Bioengineering | 20 | 266 | 2144 | 3946 |
| 73 | Infertility | 8 | 266 | 901 | 944 |
| 73 | fertility | 8 | 266 | 960 | 1000 |
| 76 | Educational Psychology | 8 | 265 | 940 | 852 |
| 77 | Cell Biology | 14 | 264 | 2761 | 4127 |
| 77 | Environmental Health | 17 | 264 | 3017 | 4616 |
| 79 | Mathematical Physics | 10 | 260 | 2083 | 1609 |
| 80 | Genetic engineering | 5 | 250 | 2200 | 1927 |
| 81 | Environmental Microbiology | 4 | 243 | 1454 | 1386 |
| 82 | Obsessive-Compulsive Disorder | 4 | 236 | 101 | 34 |
| 83 | Polymers | 18 | 224 | 2583 | 3332 |
| 83 | Geographic information systems | 3 | 224 | 1315 | 461 |
| 85 | Entomology | 12 | 219 | 1502 | 1390 |
| 86 | Signal Processing | 6 | 218 | 1627 | 1135 |
| 87 | Remote Sensing | 2 | 215 | 2196 | 690 |
| 88 | food contamination | 11 | 214 | 471 | 544 |
| 89 | Child | 9 | 211 | 1878 | 1933 |
| 90 | Histology | 6 | 209 | 1686 | 1688 |
| 91 | United States | 8 | 204 | 4416 | 3966 |
| 92 | Safety management | 7 | 203 | 308 | 197 |
| 93 | Molecular Genetics | 5 | 202 | 2020 | 1967 |
| 94 | Optical materials | 4 | 200 | 2628 | 2315 |
| 95 | Psychology | 21 | 199 | 2423 | 4009 |
| 95 | Biophysics | 12 | 199 | 4193 | 5080 |
| 97 | Asia | 11 | 198 | 1593 | 1417 |
| 98 | Medicinal plants | 6 | 195 | 1152 | 1280 |
| 99 | Process Control | 4 | 193 | 836 | 893 |
| 99 | Production Management | 4 | 193 | 1038 | 1094 |
| 101 | Dermatology | 13 | 189 | 1137 | 1521 |
| 102 | Brain | 5 | 188 | 2655 | 2541 |
| 103 | Histochemistry | 6 | 187 | 921 | 825 |
| 103 | environmental protection | 11 | 187 | 2242 | 3283 |
| 105 | Pediatric Neurology | 3 | 186 | 1367 | 1552 |
| 105 | Food Microbiology | 4 | 186 | 1305 | 1321 |
| 107 | Spectrum analysis | 17 | 185 | 2561 | 3656 |
| 108 | air quality management | 11 | 184 | 161 | 396 |
| 109 | internet | 4 | 178 | 1210 | 777 |
| 110 | Cytology | 7 | 177 | 3875 | 4696 |
| 110 | Behavior | 6 | 177 | 2939 | 3416 |
| 112 | Population Genetics | 3 | 176 | 1495 | 1334 |
| 112 | Molecular ecology | 3 | 176 | 1326 | 1345 |
| 112 | food handling | 6 | 176 | 642 | 821 |
| 115 | Educational Technology | 11 | 173 | 778 | 1026 |
| 115 | Metabolic diseases | 5 | 173 | 2523 | 2828 |
| 117 | polymerization | 16 | 172 | 2283 | 3068 |
| 118 | Oncology | 5 | 168 | 2315 | 2952 |
| 118 | Cancer | 5 | 168 | 3780 | 3913 |
| 120 | Psychopharmacology | 8 | 167 | 1312 | 1782 |
| 121 | Operations Research | 2 | 166 | 2941 | 1684 |
| 122 | Molecular Spectroscopy | 12 | 161 | 953 | 1390 |
| 123 | psychotherapy | 6 | 157 | 1148 | 1234 |
| 124 | Orthopedics | 7 | 155 | 1383 | 1531 |
| 124 | Pharmacognosy | 2 | 155 | 2638 | 1877 |
| 126 | Urology | 8 | 154 | 1592 | 1924 |
| 127 | Nonlinear Dynamics | 4 | 150 | 2230 | 1795 |
| 128 | Environmental Engineering | 16 | 148 | 2011 | 3921 |
| 129 | rehabilitation | 4 | 147 | 2492 | 2119 |
| 130 | Physiology | 8 | 145 | 3585 | 4416 |
| 130 | Creativity | 6 | 145 | 115 | 191 |
| 132 | enzymes | 4 | 144 | 1643 | 1622 |
| 132 | Plants | 13 | 144 | 1193 | 2165 |
| 134 | Bacteriology | 3 | 141 | 2442 | 2437 |
| 134 | thinking | 4 | 141 | 215 | 183 |
| 136 | Sustainable Development | 5 | 138 | 1895 | 2098 |
| 136 | Japan | 10 | 138 | 1367 | 1453 |
| 138 | Agricultural Chemistry | 3 | 137 | 2850 | 2315 |
| 138 | Social Psychology | 7 | 137 | 1607 | 2016 |
| 138 | Colloids | 5 | 137 | 3471 | 3813 |
| 141 | Anatomy | 9 | 133 | 1475 | 2100 |
| 142 | Sports Medicine | 7 | 132 | 2178 | 2123 |
| 143 | Mechanical Engineering | 8 | 131 | 1916 | 1668 |
| 143 | Microelectronics | 2 | 131 | 2527 | 1900 |
| 145 | Analytical Chemistry | 8 | 128 | 3639 | 4432 |
| 146 | Wind power | 1 | 126 | 683 | 216 |
| 147 | Developmental Biology | 9 | 125 | 1518 | 2689 |
| 147 | Liquid Crystals | 9 | 125 | 598 | 469 |
| 149 | Electrophoresis | 6 | 124 | 1453 | 1693 |
| 150 | miniaturization | 1 | 119 | 3353 | 2285 |
| 151 | Nursing | 6 | 117 | 1643 | 1475 |
| 151 | Botany | 10 | 117 | 2818 | 4129 |
| 153 | Earthquake Engineering | 4 | 116 | 1224 | 1245 |
| 154 | Reproduction | 7 | 114 | 2066 | 2546 |
| 154 | China | 7 | 114 | 2294 | 2726 |
| 156 | Sports | 5 | 113 | 1952 | 1708 |
| 157 | Adolescent | 5 | 112 | 2178 | 2181 |
| 158 | Clinical Chemistry | 7 | 111 | 2662 | 3600 |
| 159 | Cell metabolism | 3 | 110 | 901 | 1450 |
| 160 | Industrial Microbiology | 7 | 108 | 1493 | 2526 |
| 160 | Primary health care | 2 | 108 | 2855 | 1851 |
| 160 | Hazardous waste | 4 | 108 | 882 | 1381 |
| 163 | complementary therapies | 9 | 106 | 1279 | 2026 |
| 163 | disabilities | 3 | 106 | 917 | 752 |
| 165 | Quality Control | 3 | 103 | 2244 | 1959 |
| 166 | Environmental Geology | 2 | 100 | 2207 | 1719 |
| 166 | Anxiety Disorders | 1 | 100 | 1107 | 890 |
| 166 | Anxiety | 1 | 100 | 1110 | 887 |
| 166 | machinery | 4 | 100 | 758 | 673 |
| 166 | radioactive waste | 3 | 100 | 887 | 1359 |
| 166 | industrial waste | 3 | 100 | 931 | 1367 |
| 172 | Chromatography | 4 | 99 | 1779 | 1705 |
| 172 | Chromatographic analysis | 4 | 99 | 2063 | 1868 |
| 174 | Tourism | 3 | 98 | 1784 | 1761 |
| 175 | Neurosurgery | 3 | 97 | 1501 | 1462 |
| 175 | Astrophysics | 5 | 97 | 3053 | 3185 |
| 175 | Child Development | 4 | 97 | 2137 | 2403 |
| 178 | Oceanography | 3 | 96 | 2156 | 2023 |
| 178 | Soil Mechanics | 1 | 96 | 1954 | 1187 |
| 180 | Horticulture | 5 | 95 | 675 | 691 |
| 181 | Information Technology | 7 | 94 | 1907 | 2211 |
| 182 | Food Safety | 5 | 93 | 139 | 191 |
| 182 | Religion and Psychology | 6 | 93 | 314 | 361 |
| 182 | biomedicine | 4 | 93 | 926 | 1059 |
| 185 | Rheumatology | 5 | 89 | 1276 | 1727 |
| 186 | Genetics | 7 | 87 | 3650 | 5612 |
| 186 | Pediatrics | 2 | 87 | 4072 | 3682 |
| 186 | Exercise therapy | 1 | 87 | 976 | 327 |
| 189 | Microbial Biotechnology | 5 | 86 | 798 | 1200 |
| 189 | human behavior | 3 | 86 | 3066 | 3872 |
| 191 | Manufacturing Processes | 6 | 85 | 1959 | 2435 |
| 191 | mathematical analysis | 4 | 85 | 2474 | 1852 |
| 193 | Mental illness | 5 | 83 | 2097 | 3070 |
| 194 | Epidemiology | 4 | 80 | 4448 | 5152 |
| 194 | Women's health | 3 | 80 | 1710 | 1622 |
| 196 | Freshwater Ecology | 2 | 79 | 419 | 178 |
| 196 | Neurophysiology | 7 | 79 | 2510 | 3961 |
| 196 | actuators | 5 | 79 | 2065 | 2867 |
| 196 | transducers | 5 | 79 | 2065 | 2867 |
| 200 | Clinical Immunology | 1 | 78 | 2604 | 1832 |
| 200 | Sleep Disorders | 4 | 78 | 1905 | 2075 |
| 200 | Allergy | 1 | 78 | 2431 | 2177 |
| 200 | Information Science | 3 | 78 | 3039 | 2982 |
| 200 | Sleep | 4 | 78 | 1919 | 2087 |
| 205 | Food additives | 1 | 77 | 2329 | 1702 |
| 205 | Biocompatible Materials | 6 | 77 | 3353 | 5208 |
| 205 | hydrocolloids | 1 | 77 | 1158 | 1096 |
| 205 | Agriculture | 5 | 77 | 2277 | 2809 |
| 209 | Computer Literacy | 2 | 76 | 319 | 257 |
| 210 | Mental Health | 4 | 75 | 1807 | 1980 |
| 210 | Composite Materials | 4 | 75 | 2758 | 3467 |
| 210 | Lipids | 3 | 75 | 1703 | 2132 |
| 213 | Climatology | 5 | 74 | 1699 | 2346 |
| 214 | Pharmaceutical Chemistry | 4 | 73 | 4331 | 5069 |
| 214 | Autoantibodies | 1 | 73 | 1261 | 1035 |
| 214 | Autoimmunity | 1 | 73 | 1536 | 1357 |
| 214 | Autoimmune diseases | 1 | 73 | 1377 | 1098 |
| 218 | Distance Education | 3 | 71 | 516 | 482 |
| 218 | Educational Sociology | 3 | 71 | 392 | 352 |
| 220 | Phytotherapy | 5 | 70 | 733 | 1237 |
| 221 | Organic Chemistry | 4 | 68 | 3348 | 3855 |
| 221 | Water | 4 | 68 | 2609 | 3815 |
| 221 | Soil dynamics | 1 | 68 | 871 | 587 |
| 221 | Quantum Gravity | 7 | 68 | 1701 | 2106 |
| 225 | Soft Condensed Matter | 4 | 67 | 1098 | 1450 |
| 225 | natural products | 2 | 67 | 2510 | 1999 |
| 225 | Carbon | 2 | 67 | 1875 | 2160 |
| 225 | biological factors | 2 | 67 | 2830 | 2600 |
| 229 | Cognitive Science | 1 | 66 | 2870 | 2153 |
| 229 | Cognitive neuroscience | 1 | 66 | 1756 | 1481 |
| 229 | Learning | 1 | 66 | 2659 | 1811 |
| 229 | Cognitive Learning | 1 | 66 | 283 | 121 |
| 233 | Solitons | 3 | 65 | 1220 | 1271 |
| 233 | Fractals | 3 | 65 | 1413 | 1389 |
| 233 | Chaos | 3 | 65 | 1220 | 1271 |
| 236 | Psychiatric Nursing | 5 | 64 | 575 | 778 |
| 236 | Solar Energy | 1 | 64 | 3066 | 2547 |
| 238 | Photonics | 3 | 63 | 2015 | 2347 |
| 238 | Environmental Management | 4 | 63 | 3017 | 4510 |
| 238 | Telecommunication | 3 | 63 | 2740 | 2242 |
| 238 | training | 11 | 63 | 14 | 20 |
| 242 | sleep-wake cycle | 3 | 62 | 127 | 92 |
| 243 | Electrical Engineering | 8 | 61 | 2713 | 2908 |
| 243 | Building Materials | 1 | 61 | 2668 | 2451 |
| 243 | Solid State Chemistry | 3 | 61 | 2854 | 2832 |
| 243 | computer networks | 1 | 61 | 4159 | 2694 |
| 247 | Surface Chemistry | 4 | 60 | 3879 | 4776 |
| 248 | Multicultural Education | 3 | 59 | 421 | 376 |
| 249 | Meteorology | 3 | 58 | 2852 | 3670 |
| 249 | Bioorganic chemistry | 4 | 58 | 2980 | 3951 |
| 249 | sadness | 3 | 58 | 239 | 234 |
| 249 | death | 3 | 58 | 337 | 294 |
| 249 | Suicide | 3 | 58 | 658 | 794 |
| 249 | antisocial personality disorder | 3 | 58 | 239 | 234 |
| 255 | Diet | 2 | 57 | 3325 | 3680 |
| 256 | Chronobiology | 6 | 55 | 266 | 618 |
| 256 | Signal Transduction | 1 | 55 | 2656 | 2484 |
| 256 | Stochastic Processes | 3 | 55 | 1069 | 1010 |
| 256 | biological clocks | 6 | 55 | 266 | 618 |
| 256 | circadian rhythm | 6 | 55 | 266 | 618 |
| 256 | Host-parasite interactions | 5 | 55 | 1239 | 2670 |
| 256 | biological rhythms | 6 | 55 | 247 | 608 |
| 263 | Neuropsychology | 3 | 54 | 2862 | 3412 |
| 263 | Comparative Physiology | 1 | 54 | 1583 | 1219 |
| 265 | Materials Science | 5 | 53 | 4612 | 5879 |
| 265 | Endocrinology | 2 | 53 | 4595 | 4963 |
| 265 | Pediatric Dermatology | 2 | 53 | 737 | 590 |
| 265 | Medical Microbiology | 4 | 53 | 2691 | 4242 |
| 265 | Adhesion | 10 | 53 | 246 | 872 |
| 265 | Freezing | 5 | 53 | 299 | 398 |
| 265 | adhesives | 10 | 53 | 266 | 880 |
| 265 | pigments | 2 | 53 | 1163 | 1193 |
| 273 | Superconductors | 2 | 52 | 959 | 771 |
| 273 | Superconductivity | 2 | 52 | 707 | 594 |
| 275 | Pakistan | 3 | 51 | 451 | 225 |
| 276 | Radiology | 2 | 50 | 2585 | 2157 |
| 276 | Marine Biology | 2 | 50 | 3537 | 3635 |
| 276 | Surgery | 2 | 50 | 3141 | 3442 |
| 276 | Higher Education | 2 | 50 | 799 | 696 |
| 276 | Bioethics | 1 | 50 | 1908 | 1130 |
| 276 | Food service management | 2 | 50 | 515 | 827 |
| 276 | Medical Ethics | 1 | 50 | 2473 | 1442 |
| 276 | Radiation | 3 | 50 | 2789 | 2950 |
| 276 | nursing ethics | 1 | 50 | 563 | 402 |
| 276 | tests | 2 | 50 | 265 | 321 |
| 286 | Data Mining | 1 | 48 | 3570 | 2850 |
| 286 | data collection | 2 | 48 | 1801 | 2139 |
| 286 | management | 3 | 48 | 3996 | 4481 |
| 289 | Infections | 1 | 47 | 2509 | 2471 |
| 289 | infection | 2 | 47 | 2667 | 3022 |
| 291 | Optics | 5 | 45 | 4674 | 5002 |
| 291 | School Psychology | 1 | 45 | 904 | 741 |
| 293 | Computer Science | 2 | 44 | 3275 | 2671 |
| 294 | animal diseases | 1 | 43 | 1044 | 860 |
| 295 | Environmental Chemistry | 4 | 42 | 2315 | 3793 |
| 295 | Evidence-Based Medicine | 2 | 42 | 2009 | 2056 |
| 295 | Aerosols | 1 | 42 | 1179 | 926 |
| 295 | aerosol | 1 | 42 | 824 | 645 |
| 299 | Occupational Health | 1 | 41 | 2586 | 1654 |
| 299 | Special Education | 1 | 41 | 1572 | 963 |
| 299 | Metabolism | 1 | 41 | 5194 | 5150 |
| 299 | occupational diseases | 1 | 41 | 2081 | 1863 |
| 299 | Fracture mechanics | 2 | 41 | 1929 | 2012 |
| 299 | bioclimatology | 4 | 41 | 939 | 1591 |
| 305 | Ceramics | 2 | 40 | 2177 | 2136 |
| 305 | Analytical Biochemistry | 2 | 40 | 2697 | 2998 |
| 305 | Alternative Medicine | 6 | 40 | 1544 | 3167 |
| 305 | Central Asia | 2 | 40 | 338 | 309 |
| 309 | Public Health | 4 | 39 | 6858 | 9366 |
| 309 | Phytochemistry | 3 | 39 | 295 | 608 |
| 309 | Phytoremediation | 3 | 39 | 295 | 608 |
| 309 | environmental remediation | 3 | 39 | 384 | 691 |
| 309 | Bioreactors | 3 | 39 | 295 | 608 |
| 309 | X-rays | 1 | 39 | 1522 | 1009 |
| 315 | Clinical Psychology | 1 | 38 | 2830 | 2762 |
| 315 | Production Engineering | 3 | 38 | 2293 | 2617 |
| 315 | behavioral medicine | 1 | 38 | 2798 | 2894 |
| 315 | Circadian rhythms | 2 | 38 | 461 | 664 |
| 315 | Tropical Medicine | 8 | 38 | 1424 | 3084 |
| 315 | Mountains | 1 | 38 | 942 | 543 |
| 321 | Clinical Pharmacology | 1 | 37 | 2962 | 2678 |
| 321 | Ocean Engineering | 2 | 37 | 2187 | 2591 |
| 321 | Drying | 1 | 37 | 797 | 657 |
| 321 | Traditional medicine | 5 | 37 | 212 | 648 |
| 325 | Atmospheric Chemistry | 1 | 36 | 1631 | 1821 |
| 325 | Environmental forensics | 1 | 36 | 212 | 112 |
| 325 | Electrophysiology | 3 | 36 | 1509 | 1860 |
| 328 | Information Theory | 5 | 35 | 1097 | 1722 |
| 328 | Statistics | 1 | 35 | 4731 | 3419 |
| 328 | Lymphatic system | 2 | 35 | 162 | 207 |
| 328 | Calorimetry | 2 | 35 | 1701 | 1703 |
| 328 | Thermal analysis | 2 | 35 | 1701 | 1703 |
| 333 | Electrocardiography | 2 | 34 | 680 | 567 |
| 334 | Cardiovascular diseases | 1 | 33 | 3214 | 2775 |
| 334 | Chemical analysis | 1 | 33 | 2295 | 2207 |
| 334 | Microscopy | 6 | 33 | 1450 | 2514 |
| 334 | Exercise | 2 | 33 | 1971 | 2064 |
| 338 | Pediatric Endocrinology | 2 | 32 | 563 | 496 |
| 338 | Wireless Communication Systems | 3 | 32 | 2362 | 2603 |
| 338 | Molecules | 3 | 32 | 1834 | 2078 |
| 338 | Metabolic disorders in children | 2 | 32 | 497 | 410 |
| 338 | food industry | 2 | 32 | 1022 | 1194 |
| 343 | Environmental Education | 1 | 31 | 798 | 646 |
| 343 | Emergency Medicine | 5 | 31 | 1649 | 2720 |
| 345 | Computer Engineering | 2 | 30 | 1242 | 1361 |
| 345 | Kinesiology | 4 | 30 | 132 | 323 |
| 345 | Herbal medicine | 1 | 30 | 1534 | 1821 |
| 345 | Health | 2 | 30 | 3702 | 4463 |
| 345 | Intelligent Control Systems | 1 | 30 | 2268 | 1456 |
| 345 | Fuzzy systems | 1 | 30 | 3098 | 2278 |
| 351 | Enzyme inhibitors | 1 | 29 | 824 | 845 |
| 351 | pain | 5 | 29 | 1411 | 2857 |
| 353 | Marine Ecology | 1 | 28 | 1465 | 1388 |
| 353 | Water pollution | 1 | 28 | 4673 | 4937 |
| 353 | ecosystem | 1 | 28 | 2546 | 2891 |
| 353 | disease outbreaks | 1 | 28 | 1248 | 1456 |
| 353 | Epidemics | 1 | 28 | 1171 | 1434 |
| 353 | women | 1 | 28 | 1715 | 1182 |
| 353 | plant oils | 3 | 28 | 290 | 472 |
| 360 | Cultural Studies | 1 | 27 | 390 | 303 |
| 360 | Neurobiology | 1 | 27 | 3295 | 3699 |
| 360 | Automation | 5 | 27 | 1687 | 2903 |
| 360 | Environmental Psychology | 1 | 27 | 758 | 959 |
| 360 | Religion | 1 | 27 | 2034 | 870 |
| 360 | Religion and Culture | 1 | 27 | 711 | 483 |
| 360 | nucleic acids | 2 | 27 | 2582 | 3539 |
| 360 | Culture | 1 | 27 | 2126 | 1465 |
| 368 | Zoology | 2 | 26 | 3705 | 3952 |
| 368 | Immunology | 3 | 26 | 4711 | 6612 |
| 368 | Plant Biotechnology | 2 | 26 | 1186 | 1627 |
| 368 | Agricultural Biotechnology | 1 | 26 | 701 | 347 |
| 368 | Anti-inflammatory agents | 2 | 26 | 368 | 602 |
| 368 | Molecular evolution | 2 | 26 | 2667 | 3665 |
| 368 | Inflammation | 3 | 26 | 1626 | 2932 |
| 368 | indoor air pollution | 3 | 26 | 458 | 1006 |
| 368 | Ventilation | 3 | 26 | 619 | 1183 |
| 368 | Sick building syndrome | 3 | 26 | 458 | 1006 |
| 368 | Climate | 3 | 26 | 716 | 1480 |
| 368 | weather | 3 | 26 | 673 | 1404 |
| 380 | Dentistry | 5 | 25 | 708 | 1194 |
| 380 | Cosmology | 4 | 25 | 1474 | 1756 |
| 380 | Dynamics | 4 | 25 | 1894 | 2603 |
| 380 | DNS | 1 | 25 | 1162 | 1278 |
| 380 | Middle East | 1 | 25 | 2052 | 1397 |
| 380 | drug therapy | 3 | 25 | 3148 | 4791 |
| 380 | Recombinant DNA | 1 | 25 | 3054 | 3153 |
| 380 | health planning | 4 | 25 | 2355 | 3995 |
| 380 | wood | 2 | 25 | 657 | 795 |
| 380 | DNA | 1 | 25 | 1389 | 1356 |
| 380 | Genes | 1 | 25 | 2359 | 2421 |
| 391 | Engineering | 3 | 24 | 5697 | 6976 |
| 391 | Neonatology | 2 | 24 | 1046 | 1509 |
| 391 | Biochemical Genetics | 2 | 24 | 729 | 715 |
| 391 | Nuclear Chemistry | 2 | 24 | 1649 | 1696 |
| 391 | Radiochemistry | 2 | 24 | 1562 | 1554 |
| 391 | reforestation | 1 | 24 | 368 | 378 |
| 391 | Plant breeding | 2 | 24 | 1266 | 1748 |
| 391 | Radioisotopes | 1 | 24 | 2501 | 2059 |
| 391 | child sexual abuse | 1 | 24 | 349 | 393 |
| 391 | afforestation | 1 | 24 | 368 | 378 |
| 401 | Wetland ecology | 1 | 23 | 1036 | 1049 |
| 401 | Wetland conservation | 1 | 23 | 757 | 800 |
| 401 | System analysis | 3 | 23 | 2980 | 4221 |
| 401 | Water chemistry | 4 | 23 | 251 | 856 |
| 401 | Wetlands | 1 | 23 | 772 | 801 |
| 406 | Nuclear Engineering | 2 | 22 | 1828 | 1825 |
| 406 | Soil Science | 1 | 22 | 3275 | 3417 |
| 406 | Cross-Cultural Studies | 2 | 22 | 1009 | 1495 |
| 406 | Hydraulic machinery | 1 | 22 | 325 | 233 |
| 406 | cross-cultural comparison | 2 | 22 | 815 | 1223 |
| 411 | Geography | 1 | 21 | 4258 | 4087 |
| 411 | Mutagenesis | 3 | 21 | 535 | 1184 |
| 411 | teratogenic agents | 3 | 21 | 242 | 592 |
| 411 | carcinogens | 3 | 21 | 1301 | 2562 |
| 411 | Cerebellum | 1 | 21 | 691 | 840 |
| 411 | synthesis | 2 | 21 | 1545 | 1679 |
| 411 | Cognition | 1 | 21 | 3064 | 3296 |
| 411 | Vaccines | 1 | 21 | 3691 | 4145 |
| 411 | Cerebellar ataxia | 1 | 21 | 691 | 840 |
| 420 | Systems Analysis | 2 | 20 | 1631 | 2198 |
| 420 | Physical Chemistry | 1 | 20 | 3971 | 4104 |
| 420 | Altitude Sickness | 1 | 20 | 377 | 402 |
| 420 | Altitude | 1 | 20 | 377 | 402 |
| 420 | Therapeutics | 2 | 20 | 2852 | 4285 |
| 420 | heredity | 1 | 20 | 1521 | 1611 |
| 420 | Detectors | 1 | 20 | 2008 | 1740 |
| 420 | Breeding | 1 | 20 | 2282 | 2491 |
| 428 | Bioremediation | 3 | 19 | 961 | 2165 |
| 428 | Plant genetic engineering | 1 | 19 | 1777 | 2103 |
| 428 | Water quality | 3 | 19 | 215 | 746 |
| 428 | Natural history | 2 | 19 | 6282 | 8486 |
| 428 | Quantum theory | 1 | 19 | 1697 | 1636 |
| 433 | Robotics | 1 | 18 | 3008 | 3045 |
| 433 | Medical Physics | 1 | 18 | 3123 | 3119 |
| 433 | Physical organic chemistry | 1 | 18 | 2386 | 2660 |
| 433 | environmental indicators | 1 | 18 | 2107 | 2791 |
| 433 | Semiconductors | 2 | 18 | 2877 | 3474 |
| 433 | Diagnostic Imaging | 3 | 18 | 2684 | 4193 |
| 433 | pain management | 3 | 18 | 876 | 1603 |
| 433 | foods | 1 | 18 | 690 | 797 |
| 433 | drugs | 2 | 18 | 3427 | 4804 |
| 442 | Sustainable Engineering | 1 | 17 | 2907 | 3416 |
| 442 | Algebra | 3 | 17 | 1697 | 1752 |
| 442 | Clinical Biochemistry | 3 | 17 | 1742 | 2913 |
| 442 | Multimedia Systems | 1 | 17 | 3133 | 2907 |
| 442 | aromatic plants | 3 | 17 | 232 | 448 |
| 442 | industrial relations | 1 | 17 | 1600 | 1524 |
| 442 | Molecular structure | 5 | 17 | 2415 | 4614 |
| 442 | Gastrointestinal diseases | 1 | 17 | 1619 | 1800 |
| 442 | cycles | 4 | 17 | 122 | 279 |
| 451 | Pharmacy | 1 | 16 | 4217 | 4679 |
| 451 | Electronics | 6 | 16 | 3200 | 5420 |
| 451 | Structural design | 2 | 16 | 1193 | 1771 |
| 451 | Psychometrics | 1 | 16 | 815 | 937 |
| 451 | Orthopedic Surgery | 2 | 16 | 1349 | 2026 |
| 451 | epilepsy | 1 | 16 | 2011 | 2403 |
| 451 | Smart Materials | 2 | 16 | 1335 | 1987 |
| 451 | Respiration | 1 | 16 | 2915 | 3522 |
| 459 | Teacher Education | 1 | 15 | 111 | 180 |
| 459 | Morphology | 6 | 15 | 661 | 1616 |
| 459 | Particle Physics | 2 | 15 | 1137 | 1217 |
| 459 | Organizational Behavior | 1 | 15 | 1016 | 1274 |
| 459 | Approximation Theory | 2 | 15 | 609 | 712 |
| 464 | Medical Technology | 1 | 14 | 4049 | 4709 |
| 464 | Nutrition physiology | 1 | 14 | 1656 | 2101 |
| 464 | Animal husbandry | 2 | 14 | 557 | 846 |
| 464 | mass transfer | 1 | 14 | 2812 | 3257 |
| 464 | Physical fitness | 2 | 14 | 1550 | 2288 |
| 464 | livestock | 2 | 14 | 804 | 1149 |
| 470 | Forensic Psychology | 2 | 13 | 606 | 949 |
| 470 | Cytogenetics | 1 | 13 | 3085 | 3938 |
| 470 | Forensic Psychiatry | 2 | 13 | 838 | 1288 |
| 470 | Divorce | 1 | 13 | 323 | 358 |
| 470 | Marriage | 1 | 13 | 1089 | 1356 |
| 470 | Insects | 2 | 13 | 2149 | 2900 |
| 470 | Digestive system diseases | 2 | 13 | 1521 | 2494 |
| 477 | Chemotherapy | 1 | 12 | 3113 | 3782 |
| 477 | Nanoelectronics | 1 | 12 | 1647 | 1738 |
| 477 | Plant Morphology | 1 | 12 | 1163 | 1431 |
| 477 | Social Change | 1 | 12 | 1907 | 2650 |
| 477 | Semiconductor industry | 1 | 12 | 1278 | 1454 |
| 482 | Plant Ecology | 1 | 11 | 3025 | 3892 |
| 482 | Metallurgy | 2 | 11 | 3501 | 4515 |
| 482 | cosmic rays | 1 | 11 | 1006 | 1181 |
| 482 | Crisis management | 1 | 11 | 427 | 520 |
| 482 | Mental Health Services | 1 | 11 | 2758 | 3286 |
| 482 | Ceramic materials | 2 | 11 | 1887 | 2916 |
| 482 | Chemical industry | 2 | 11 | 1982 | 2854 |
| 482 | plant communities | 1 | 11 | 1921 | 2633 |
| 490 | Economics | 3 | 10 | 4875 | 6607 |
| 490 | Pathology | 1 | 10 | 4565 | 5740 |
| 490 | Seismology | 1 | 10 | 1033 | 1215 |
| 490 | Neuropharmacology | 2 | 10 | 917 | 1706 |
| 490 | alcoholism | 2 | 10 | 2266 | 3820 |
| 495 | Natural Sciences | 1 | 9 | 309 | 398 |
| 495 | Oral Medicine | 4 | 9 | 679 | 1643 |
| 495 | Surface-Active Agents | 1 | 9 | 2097 | 3047 |
| 495 | Language and Education | 1 | 9 | 346 | 374 |
| 495 | Obesity | 1 | 9 | 3932 | 5363 |
| 495 | Surface properties | 1 | 9 | 2208 | 3163 |
| 495 | Intellectual disability | 1 | 9 | 1773 | 2206 |
| 495 | educational innovations | 1 | 9 | 1074 | 1327 |
| 495 | Toxins | 2 | 9 | 1494 | 2432 |
| 504 | Functional Analysis | 2 | 8 | 1648 | 2160 |
| 504 | Hydrology | 1 | 8 | 4471 | 5368 |
| 504 | Numerical Analysis | 2 | 8 | 3128 | 4290 |
| 504 | Nuclear Fusion | 1 | 8 | 1118 | 1298 |
| 504 | Hemostasis | 1 | 8 | 1707 | 2233 |
| 504 | Thrombosis | 1 | 8 | 2224 | 2953 |
| 504 | Ecohydrology | 1 | 8 | 831 | 1198 |
| 504 | Rheology | 1 | 8 | 1199 | 1575 |
| 504 | vibration | 2 | 8 | 1757 | 2761 |
| 504 | Molecular recognition | 1 | 8 | 554 | 952 |
| 504 | Sensor Networks | 1 | 8 | 536 | 693 |
| 504 | plant molecular biology | 1 | 8 | 2662 | 3707 |
| 504 | fusion reactors | 1 | 8 | 859 | 959 |
| 504 | Aquatic ecology | 1 | 8 | 1879 | 2465 |
| 518 | Systems Engineering | 1 | 7 | 3990 | 4501 |
| 518 | Audiology | 1 | 7 | 1535 | 2039 |
| 518 | Mathematics Education | 2 | 7 | 652 | 973 |
| 518 | Nuclear Medicine | 1 | 7 | 2107 | 2535 |
| 518 | Neurochemistry | 1 | 7 | 4146 | 5415 |
| 518 | Community Psychiatry | 1 | 7 | 2238 | 3112 |
| 518 | Microbial Genetics | 1 | 7 | 780 | 1132 |
| 518 | Animal health | 2 | 7 | 695 | 1180 |
| 518 | Mycology | 1 | 7 | 3021 | 3884 |
| 518 | vascular diseases | 1 | 7 | 1512 | 2144 |
| 518 | free radicals | 1 | 7 | 2758 | 3705 |
| 518 | Hearing | 1 | 7 | 1344 | 1816 |
| 518 | Psychiatric Epidemiology | 1 | 7 | 1120 | 1925 |
| 518 | Vegetation | 1 | 7 | 304 | 417 |
| 518 | Leisure | 1 | 7 | 678 | 1018 |
| 533 | Biomechanics | 1 | 6 | 3021 | 3928 |
| 533 | Electrochemistry | 1 | 6 | 5741 | 6653 |
| 533 | Parasitology | 1 | 6 | 4234 | 5434 |
| 533 | Parasitic Diseases | 1 | 6 | 3929 | 5278 |
| 533 | Semigroups | 1 | 6 | 560 | 563 |
| 533 | breastfeeding | 1 | 6 | 1207 | 1865 |
| 533 | Korea | 1 | 6 | 833 | 1059 |
| 533 | medical education | 2 | 6 | 3103 | 5050 |
| 533 | disease vectors | 1 | 6 | 1965 | 2921 |
| 533 | Building | 1 | 6 | 1292 | 1596 |
| 533 | ozone | 2 | 6 | 190 | 582 |
| 533 | Parasites | 1 | 6 | 3013 | 4008 |
| 533 | Radio | 2 | 6 | 1229 | 1818 |
| 533 | arthritis | 2 | 6 | 1922 | 3420 |
| 533 | drug abuse | 1 | 6 | 1437 | 2092 |
| 533 | Coronary heart disease | 2 | 6 | 398 | 741 |
| 533 | Biodiversity | 3 | 6 | 2799 | 5449 |
| 550 | Law | 1 | 5 | 2912 | 2500 |
| 550 | Materials Engineering | 1 | 5 | 1579 | 2161 |
| 550 | Emergency Medical Services | 1 | 5 | 1894 | 2746 |
| 550 | Thermodynamics | 3 | 5 | 1402 | 2692 |
| 550 | Transportation | 1 | 5 | 2964 | 3914 |
| 550 | social justice | 1 | 5 | 775 | 924 |
| 550 | air quality | 3 | 5 | 236 | 1142 |
| 550 | Ireland | 1 | 5 | 455 | 485 |
| 558 | Sustainable Architecture | 1 | 4 | 394 | 611 |
| 558 | Geometry | 4 | 4 | 1274 | 2195 |
| 558 | Plant Pathology | 1 | 4 | 350 | 568 |
| 558 | Animal Behavior | 2 | 4 | 2740 | 4899 |
| 558 | Sustainable agriculture | 1 | 4 | 1584 | 2471 |
| 558 | Geopolitics | 2 | 4 | 413 | 904 |
| 558 | Biotransformation | 1 | 4 | 321 | 625 |
| 558 | Crystallography | 1 | 4 | 2965 | 3278 |
| 558 | curriculum evaluation | 1 | 4 | 708 | 1169 |
| 558 | Metallography | 1 | 4 | 1591 | 2286 |
| 558 | environmental exposure | 1 | 4 | 3904 | 5613 |
| 558 | ethanol | 1 | 4 | 1128 | 1752 |
| 558 | Spain | 1 | 4 | 1620 | 1569 |
| 558 | Psychophysiology | 1 | 4 | 5032 | 6590 |
| 558 | phototherapy | 1 | 4 | 586 | 843 |
| 573 | Industrial Engineering | 1 | 3 | 3503 | 4875 |
| 573 | Public Relations | 2 | 3 | 680 | 1454 |
| 573 | Structural dynamics | 1 | 3 | 1850 | 2751 |
| 573 | Biosensors | 1 | 3 | 2391 | 3700 |
| 573 | Health Policy | 2 | 3 | 3773 | 7001 |
| 573 | Social Stratification | 1 | 3 | 188 | 335 |
| 573 | Public Policy | 1 | 3 | 3661 | 5460 |
| 573 | Public Administration | 3 | 3 | 1730 | 3469 |
| 573 | Quantum electronics | 1 | 3 | 2090 | 2706 |
| 573 | housing policy | 1 | 3 | 269 | 474 |
| 573 | Healing | 1 | 3 | 315 | 632 |
| 573 | Functional foods | 1 | 3 | 899 | 1562 |
| 573 | Social mobility | 1 | 3 | 188 | 335 |
| 573 | Holistic Health | 1 | 3 | 1095 | 1831 |
| 573 | Taste | 2 | 3 | 425 | 1212 |
| 573 | Developmental Disabilities | 1 | 3 | 1939 | 3037 |
| 573 | Housing | 1 | 3 | 956 | 1546 |
| 573 | starch | 1 | 3 | 788 | 1276 |
| 573 | flavor | 2 | 3 | 275 | 906 |
| 573 | Optoelectronic devices | 1 | 3 | 1762 | 2313 |
| 573 | smell | 2 | 3 | 425 | 1212 |
| 573 | behavior modification | 1 | 3 | 722 | 1210 |
| 573 | social conflict | 1 | 3 | 505 | 761 |
| 573 | behavior therapy | 1 | 3 | 1645 | 2491 |
| 573 | Radio waves | 1 | 3 | 656 | 950 |
| 573 | Social work | 1 | 3 | 3074 | 4226 |
| 573 | herbs | 1 | 3 | 207 | 435 |
| 573 | social status | 1 | 3 | 188 | 335 |
| 573 | Occupational mobility | 1 | 3 | 188 | 335 |
| 573 | finance | 1 | 3 | 3816 | 4731 |
| 573 | Heterocyclic compounds | 1 | 3 | 1873 | 2579 |
| 573 | lasers | 1 | 3 | 3464 | 4299 |
| 573 | venom | 1 | 3 | 1861 | 2548 |
| 606 | Applied Mathematics | 1 | 2 | 1955 | 2333 |
| 606 | Hematology | 1 | 2 | 5576 | 6395 |
| 606 | Econometrics | 1 | 2 | 2373 | 3175 |
| 606 | Genetic testing | 1 | 2 | 891 | 1595 |
| 606 | Biomarkers | 1 | 2 | 1078 | 2018 |
| 606 | Accreditation | 1 | 2 | 207 | 400 |
| 606 | Malaria | 1 | 2 | 1541 | 2520 |
| 606 | men | 1 | 2 | 695 | 1299 |
| 606 | nucleotides | 1 | 2 | 737 | 1150 |
| 606 | Algae | 1 | 2 | 1362 | 1999 |
| 606 | Iron | 1 | 2 | 781 | 1236 |
| 606 | insect vectors | 1 | 2 | 118 | 235 |
| 606 | Refractory materials | 2 | 2 | 207 | 452 |
| 606 | at-risk youth | 1 | 2 | 201 | 397 |
| 606 | biochemical markers | 1 | 2 | 1874 | 3194 |
| 606 | Fluorescence | 1 | 2 | 1059 | 1752 |
| 606 | India | 1 | 2 | 3750 | 4607 |
| 606 | drug evaluation | 1 | 2 | 2757 | 4310 |
| 606 | Philippines | 1 | 2 | 313 | 555 |
| 606 | Emotions | 1 | 2 | 1098 | 1786 |
| 626 | Emergency Nursing | 1 | 1 | 419 | 869 |
| 626 | Pharmacogenetics | 1 | 1 | 2265 | 3600 |
| 626 | Pharmacogenomics | 1 | 1 | 803 | 1520 |
| 626 | Statistical Mechanics | 1 | 1 | 2221 | 3025 |
| 626 | Precision medicine | 1 | 1 | 560 | 1055 |
| 626 | Green Technology | 1 | 1 | 1071 | 2035 |
| 626 | Integrated Circuits | 1 | 1 | 1511 | 2126 |
| 626 | Organometallic chemistry | 1 | 1 | 3301 | 4516 |
| 626 | locomotion | 1 | 1 | 1407 | 2132 |
| 626 | posture | 1 | 1 | 1407 | 2132 |
| 626 | Ferroelectricity | 1 | 1 | 1654 | 2284 |
| 626 | Pesticides | 1 | 1 | 1437 | 2381 |
| 626 | Plastics | 1 | 1 | 3144 | 4436 |
| 626 | Organometallic compounds | 1 | 1 | 2122 | 2995 |
| 626 | Soviet Union | 1 | 1 | 1625 | 2318 |
| 626 | Evolution | 1 | 1 | 3611 | 5338 |
| 626 | gait | 1 | 1 | 1407 | 2132 |
| 626 | walking | 1 | 1 | 1407 | 2132 |
| 644 | Organizational Sociology | 1 | 0 | 669 | 1250 |
| 644 | Fluid Dynamics | 1 | 0 | 2173 | 3336 |
| 644 | Industrial Safety | 1 | 0 | 2552 | 4199 |
| 644 | Bifurcation Theory | 1 | 0 | 1257 | 1941 |
| 644 | Travel | 2 | 0 | 1466 | 3569 |
| 644 | cell adhesion molecules | 1 | 0 | 1182 | 2081 |
| 644 | cytokines | 1 | 0 | 2646 | 4074 |
| 644 | Bacterial infections | 1 | 0 | 2022 | 3383 |
| 644 | Germany | 1 | 0 | 1605 | 2533 |
| 644 | anesthesia | 1 | 0 | 1338 | 2047 |
| 644 | organization | 1 | 0 | 1423 | 2360 |
| 644 | cell interaction | 1 | 0 | 2344 | 3589 |
| 644 | energy development | 1 | 0 | 1920 | 3369 |
| 644 | social marketing | 1 | 0 | 158 | 463 |
| 644 | United Kingdom | 1 | 0 | 3402 | 5175 |
| 644 | Criminal investigation | 1 | 0 | 467 | 924 |
| 644 | Cell communication | 1 | 0 | 1724 | 2877 |
