| 1 | Physics | 2,359 | 241.2K | 182 | 125 |
| 2 | Nuclear Physics | 2,660 | 159.7K | 53 | 24 |
| 3 | Chemistry | 1,028 | 123.7K | 420 | 171 |
| 4 | Astrophysics | 830 | 95.9K | 216 | 134 |
| 5 | Biology | 554 | 93.8K | 634 | 320 |
| 6 | Quantum Gravity | 1,498 | 93.5K | 18 | 12 |
| 7 | Nanotechnology | 327 | 70.9K | 364 | 74 |
| 8 | Science | 516 | 68.5K | 671 | 444 |
| 9 | Spectrum analysis | 651 | 68.4K | 158 | 88 |
| 10 | Materials | 404 | 49.0K | 472 | 162 |
| 11 | Natural history | 138 | 37.3K | 462 | 403 |
| 12 | Astronomy | 489 | 34.2K | 313 | 278 |
| 13 | Nanostructures | 41 | 33.0K | 406 | 9 |
| 14 | Materials Science | 185 | 32.0K | 538 | 128 |
| 15 | Catalysis | 313 | 29.8K | 252 | 94 |
| 16 | Molecular Biology | 210 | 27.1K | 1197 | 559 |
| 17 | Renewable Energy Sources | 72 | 26.7K | 262 | 22 |
| 18 | Biotechnology | 161 | 24.8K | 769 | 242 |
| 19 | miniaturization | 157 | 24.6K | 97 | 42 |
| 20 | Microelectronics | 159 | 24.5K | 108 | 34 |
| 21 | Bioengineering | 155 | 24.5K | 409 | 146 |
| 22 | energy development | 41 | 20.9K | 46 | 5 |
| 23 | Condensed Matter | 472 | 18.0K | 270 | 255 |
| 24 | Solid State Physics | 457 | 17.8K | 302 | 240 |
| 25 | Chemical Engineering | 84 | 16.9K | 1005 | 226 |
| 26 | Energy Conversion | 127 | 16.6K | 66 | 40 |
| 27 | Statistics | 18 | 15.9K | 1347 | 72 |
| 28 | Photonics | 77 | 12.9K | 215 | 49 |
| 29 | Light | 47 | 11.3K | 118 | 26 |
| 30 | Physical Chemistry | 82 | 11.1K | 318 | 75 |
| 31 | Environmental Chemistry | 56 | 10.2K | 283 | 91 |
| 32 | Organic Chemistry | 36 | 9.4K | 1186 | 130 |
| 33 | Bioorganic chemistry | 34 | 9.4K | 944 | 95 |
| 34 | nanoscience | 74 | 8.4K | 512 | 265 |
| 35 | fuel cells | 95 | 8.2K | 87 | 74 |
| 36 | Mathematical Physics | 45 | 7.8K | 869 | 172 |
| 37 | Nanostructured Materials | 150 | 7.5K | 334 | 244 |
| 38 | Energy Storage | 78 | 6.6K | 82 | 28 |
| 39 | Optics | 207 | 6.6K | 496 | 324 |
| 40 | Energy Harvesting | 47 | 5.9K | 36 | 15 |
| 41 | biocatalysis | 18 | 5.7K | 17 | 12 |
| 41 | Homogeneous catalysis | 18 | 5.7K | 17 | 12 |
| 41 | Heterogeneous catalysis | 18 | 5.7K | 17 | 12 |
| 44 | particle accelerators | 230 | 5.7K | 1 | 1 |
| 45 | particle beams | 214 | 5.6K | 1 | 1 |
| 46 | Biophysics | 121 | 5.4K | 1178 | 872 |
| 47 | Radiation | 171 | 4.9K | 62 | 76 |
| 48 | Synchrotron Radiation | 179 | 4.7K | 10 | 9 |
| 49 | Statistical physics | 140 | 4.1K | 615 | 558 |
| 50 | Cosmology | 168 | 3.7K | 36 | 51 |
| 51 | Electrochemistry | 187 | 3.6K | 440 | 553 |
| 52 | Biocompatible Materials | 69 | 3.2K | 900 | 916 |
| 53 | Optical materials | 57 | 3.2K | 549 | 450 |
| 54 | Biochemistry | 95 | 2.9K | 2561 | 2657 |
| 55 | Pollution | 58 | 2.9K | 1466 | 1456 |
| 56 | Geochemistry | 53 | 2.8K | 560 | 461 |
| 57 | Experimental Design | 6 | 2.8K | 192 | 26 |
| 57 | Quality Control | 6 | 2.8K | 1475 | 76 |
| 59 | Environmental Engineering | 54 | 2.8K | 794 | 695 |
| 60 | Environmental Health | 55 | 2.7K | 1377 | 1227 |
| 61 | sanitation | 50 | 2.6K | 323 | 435 |
| 62 | nuclear astrophysics | 45 | 2.5K | 33 | 29 |
| 63 | Medical Physics | 62 | 2.4K | 357 | 273 |
| 64 | Molecules | 53 | 2.2K | 305 | 197 |
| 65 | Meteorites | 35 | 2.2K | 319 | 305 |
| 66 | Catalysts | 21 | 1.8K | 139 | 42 |
| 67 | Sustainable Development | 9 | 1.7K | 1277 | 324 |
| 67 | sustainability | 9 | 1.7K | 394 | 135 |
| 69 | Environmental Policy | 8 | 1.6K | 2406 | 919 |
| 70 | Economic Development | 7 | 1.6K | 1293 | 349 |
| 71 | Molecular structure | 25 | 1.6K | 852 | 534 |
| 72 | Crystallography | 59 | 1.6K | 276 | 172 |
| 73 | Electronics | 33 | 1.5K | 1293 | 693 |
| 74 | Structural dynamics | 48 | 1.4K | 149 | 212 |
| 75 | Data Mining | 15 | 1.4K | 596 | 314 |
| 76 | Cytology | 19 | 1.4K | 2502 | 2156 |
| 77 | Cell Biology | 12 | 1.4K | 2936 | 2187 |
| 78 | Nuclear Energy | 39 | 1.3K | 272 | 121 |
| 79 | Nuclear Chemistry | 23 | 1.2K | 383 | 105 |
| 80 | Metallurgy | 32 | 1.2K | 800 | 632 |
| 81 | Radiochemistry | 22 | 1.2K | 353 | 89 |
| 82 | Research | 27 | 1.2K | 4578 | 3740 |
| 83 | Quantum theory | 38 | 1.1K | 157 | 120 |
| 84 | Superconductors | 45 | 1.1K | 100 | 80 |
| 85 | Green Chemistry | 7 | 1.1K | 1334 | 671 |
| 86 | Nonlinear Dynamics | 50 | 1.0K | 599 | 719 |
| 87 | Virology | 6 | 990 | 2962 | 2032 |
| 88 | X-ray crystallography | 35 | 981 | 94 | 83 |
| 89 | Sustainable Engineering | 6 | 950 | 1313 | 498 |
| 90 | Environment | 6 | 916 | 4698 | 2925 |
| 91 | Microbiology | 19 | 891 | 3836 | 3591 |
| 92 | Medicine | 24 | 878 | 5991 | 5738 |
| 93 | Computational Biology | 12 | 869 | 1796 | 1118 |
| 94 | Polymers | 32 | 857 | 1964 | 1843 |
| 95 | Particle Physics | 31 | 816 | 125 | 107 |
| 96 | Bacteriology | 20 | 814 | 861 | 990 |
| 97 | Earth Sciences | 7 | 807 | 2684 | 1232 |
| 98 | Ecology | 15 | 802 | 3974 | 3592 |
| 99 | Information Retrieval | 1 | 785 | 1010 | 106 |
| 100 | Bioinformatics | 11 | 771 | 1327 | 942 |
| 101 | Magnetic Materials | 18 | 725 | 611 | 464 |
| 102 | Microbial Ecology | 12 | 713 | 1393 | 1353 |
| 103 | Analytical Chemistry | 26 | 665 | 2057 | 2189 |
| 104 | data collection | 14 | 642 | 337 | 442 |
| 105 | United States | 5 | 629 | 5598 | 2115 |
| 106 | Plant cells | 4 | 598 | 1177 | 957 |
| 107 | Mathematics | 13 | 596 | 3998 | 1996 |
| 108 | energy conservation | 9 | 575 | 1195 | 914 |
| 109 | Elementary particles | 9 | 558 | 67 | 89 |
| 110 | polymerization | 20 | 554 | 2059 | 1896 |
| 111 | Engineering | 15 | 534 | 2461 | 1456 |
| 112 | Colloids | 22 | 526 | 1724 | 2140 |
| 113 | Crystallization | 27 | 462 | 78 | 112 |
| 114 | Surface Chemistry | 18 | 455 | 1980 | 2163 |
| 115 | Nanoparticles | 10 | 429 | 1167 | 994 |
| 116 | Computational Chemistry | 7 | 423 | 457 | 343 |
| 117 | Education | 3 | 419 | 4914 | 1378 |
| 118 | Microscopy | 26 | 412 | 440 | 587 |
| 119 | Metals | 8 | 390 | 1709 | 1194 |
| 120 | Electromagnetism | 10 | 389 | 385 | 201 |
| 121 | Botany | 5 | 385 | 3722 | 2625 |
| 122 | Cosmochemistry | 11 | 375 | 487 | 523 |
| 123 | Genetics | 3 | 370 | 5115 | 3403 |
| 124 | proteins | 23 | 364 | 860 | 1316 |
| 125 | Solid State Chemistry | 13 | 359 | 1507 | 1273 |
| 126 | solar cells | 14 | 352 | 332 | 559 |
| 127 | Radiobiology | 8 | 335 | 1526 | 1091 |
| 128 | Aerosols | 3 | 326 | 701 | 281 |
| 129 | Biomedical Engineering | 4 | 322 | 5621 | 3346 |
| 130 | Cheminformatics | 2 | 321 | 543 | 280 |
| 131 | Combinatorial chemistry | 14 | 320 | 327 | 580 |
| 132 | Bioinorganic chemistry | 13 | 318 | 778 | 793 |
| 133 | Geology | 8 | 314 | 2431 | 1842 |
| 134 | protein | 21 | 306 | 456 | 832 |
| 135 | Medical Laboratory Science | 1 | 297 | 4186 | 1494 |
| 136 | aerosol | 2 | 282 | 598 | 197 |
| 137 | Carbon | 3 | 267 | 1604 | 1163 |
| 138 | Hypertension | 1 | 237 | 3111 | 1918 |
| 138 | Cardiovascular system | 1 | 237 | 3011 | 2015 |
| 140 | Geophysics | 18 | 236 | 1993 | 2787 |
| 141 | Water pollution | 5 | 234 | 2550 | 2391 |
| 142 | plant molecular biology | 1 | 228 | 2662 | 1602 |
| 142 | Plants | 1 | 228 | 3691 | 1793 |
| 144 | environmental pollution | 9 | 223 | 3335 | 4056 |
| 145 | Yugoslavia | 1 | 207 | 285 | 10 |
| 146 | Solar power plants | 6 | 200 | 122 | 168 |
| 146 | Photovoltaic Cells | 6 | 200 | 122 | 168 |
| 148 | Pharmaceutical Chemistry | 6 | 196 | 3669 | 3615 |
| 149 | Plant physiology | 4 | 179 | 2154 | 2084 |
| 150 | Environmental monitoring | 6 | 178 | 3482 | 3915 |
| 151 | Space telescopes | 7 | 177 | 110 | 77 |
| 152 | Chemical processes | 1 | 174 | 1299 | 365 |
| 153 | Solar Energy | 9 | 170 | 1077 | 1632 |
| 153 | Water | 11 | 170 | 1561 | 2705 |
| 155 | Psychiatry | 1 | 165 | 7911 | 4322 |
| 155 | Neurology | 3 | 165 | 6587 | 5465 |
| 155 | Mental Disorders | 1 | 165 | 5863 | 3204 |
| 158 | Photography | 18 | 164 | 845 | 449 |
| 158 | Nanophotonics | 5 | 164 | 218 | 287 |
| 160 | solar power | 8 | 152 | 496 | 909 |
| 160 | Groundwater | 1 | 152 | 1373 | 522 |
| 162 | Mineralogy | 4 | 147 | 1408 | 1140 |
| 163 | Technology | 13 | 144 | 2598 | 3626 |
| 164 | Clinical Chemistry | 3 | 141 | 3795 | 3266 |
| 164 | calcification | 1 | 141 | 1171 | 646 |
| 166 | Radiation Protection | 15 | 139 | 237 | 290 |
| 167 | plant communities | 3 | 138 | 1285 | 1277 |
| 168 | Nanochemistry | 5 | 136 | 1056 | 913 |
| 169 | radiation monitoring | 14 | 133 | 210 | 279 |
| 169 | Laser-plasma interactions | 10 | 133 | 28 | 39 |
| 169 | Plasma density | 10 | 133 | 28 | 39 |
| 169 | Radiation dosimetry | 13 | 133 | 170 | 198 |
| 173 | Combustion | 12 | 128 | 684 | 1140 |
| 174 | Environmental Management | 2 | 127 | 4065 | 3444 |
| 175 | coal | 2 | 126 | 2178 | 1833 |
| 176 | Biochemical Engineering | 6 | 125 | 2907 | 4385 |
| 177 | Atomic spectroscopy | 4 | 122 | 1200 | 1001 |
| 178 | Meteorology | 5 | 120 | 2317 | 2821 |
| 179 | Soft Condensed Matter | 8 | 113 | 766 | 1125 |
| 179 | biopolymers | 8 | 113 | 853 | 1254 |
| 181 | global environmental change | 2 | 109 | 1290 | 1200 |
| 182 | Geriatrics | 1 | 102 | 5787 | 3234 |
| 182 | Social Psychology | 1 | 102 | 3894 | 2289 |
| 182 | Gerontology | 1 | 102 | 3914 | 1836 |
| 182 | Aging | 1 | 102 | 5476 | 3168 |
| 186 | Petrology | 1 | 100 | 1475 | 1021 |
| 187 | Nuclear Engineering | 10 | 99 | 811 | 896 |
| 187 | Geomagnetism | 6 | 99 | 573 | 685 |
| 189 | Systems Biology | 7 | 96 | 1264 | 1962 |
| 190 | nucleic acids | 2 | 94 | 2582 | 2606 |
| 191 | Superconductivity | 8 | 93 | 313 | 427 |
| 192 | System analysis | 3 | 91 | 2980 | 2432 |
| 193 | Trace elements | 3 | 90 | 294 | 419 |
| 194 | biological monitoring | 3 | 87 | 584 | 664 |
| 195 | Hydrology | 6 | 82 | 2211 | 2786 |
| 196 | China | 3 | 81 | 3582 | 3188 |
| 197 | Public Policy | 1 | 80 | 3661 | 2312 |
| 197 | Systems Analysis | 1 | 80 | 2233 | 1141 |
| 199 | Multivariate Analysis | 1 | 77 | 931 | 512 |
| 199 | Classification | 1 | 77 | 644 | 278 |
| 201 | Radiology | 9 | 75 | 1229 | 1752 |
| 202 | Seismology | 1 | 69 | 1033 | 593 |
| 202 | Biogeochemistry | 2 | 69 | 1581 | 1776 |
| 204 | Proteomics | 1 | 68 | 2341 | 1934 |
| 204 | Proteome | 1 | 68 | 2360 | 2068 |
| 206 | Molecular Microbiology | 2 | 67 | 1308 | 1674 |
| 207 | Neurobiology | 1 | 66 | 3295 | 2914 |
| 207 | Quantum Optics | 2 | 66 | 1285 | 1000 |
| 207 | Biomolecules | 1 | 66 | 996 | 880 |
| 207 | Laser Spectroscopy | 2 | 66 | 1217 | 926 |
| 207 | Structure-activity relationship | 1 | 66 | 1012 | 514 |
| 212 | actuators | 6 | 65 | 1883 | 3083 |
| 212 | ecosystem | 1 | 65 | 2546 | 2190 |
| 212 | lasers | 1 | 65 | 3464 | 1898 |
| 212 | transducers | 6 | 65 | 1883 | 3083 |
| 216 | Information Theory | 1 | 63 | 2202 | 1372 |
| 216 | Quantum Communication | 1 | 63 | 413 | 335 |
| 216 | optical devices | 4 | 63 | 457 | 551 |
| 219 | peptides | 2 | 58 | 1420 | 1121 |
| 220 | United Kingdom | 1 | 57 | 3402 | 2644 |
| 221 | nuclear power | 10 | 55 | 287 | 427 |
| 221 | Evolution | 2 | 55 | 2883 | 3036 |
| 221 | enzymes | 5 | 55 | 1458 | 2460 |
| 224 | Ceramics | 5 | 54 | 1432 | 1889 |
| 224 | Nanoelectronics | 4 | 54 | 902 | 924 |
| 224 | Glass | 5 | 54 | 1090 | 1668 |
| 224 | pottery | 5 | 54 | 1023 | 1637 |
| 228 | Semiconductors | 3 | 53 | 2471 | 2447 |
| 229 | Planets | 4 | 47 | 1635 | 2634 |
| 230 | Electrical Engineering | 12 | 46 | 2203 | 3237 |
| 230 | Metabolism | 1 | 46 | 5194 | 4989 |
| 230 | Molecular Spectroscopy | 2 | 46 | 2529 | 2616 |
| 230 | Bones | 1 | 46 | 1864 | 1730 |
| 234 | X-rays | 1 | 45 | 1522 | 927 |
| 234 | water supply | 3 | 45 | 1114 | 1655 |
| 234 | Membranes | 2 | 45 | 2492 | 3092 |
| 237 | Nervous system | 2 | 44 | 3673 | 4366 |
| 238 | Drug design | 1 | 42 | 3440 | 2985 |
| 239 | Informatics | 2 | 40 | 1304 | 1496 |
| 240 | Quantum Chemistry | 1 | 39 | 1717 | 1061 |
| 240 | Cement | 1 | 39 | 1130 | 1205 |
| 242 | Toxicology | 3 | 36 | 5899 | 7740 |
| 242 | Planetary Science | 2 | 36 | 803 | 799 |
| 244 | Energy Policy | 1 | 34 | 4627 | 4820 |
| 244 | Biodiversity | 3 | 34 | 2799 | 3847 |
| 246 | Pediatric Neurology | 1 | 33 | 2087 | 2560 |
| 246 | Nuclear Fusion | 3 | 33 | 742 | 873 |
| 246 | Greenhouse gases | 1 | 33 | 735 | 850 |
| 249 | Magnetic Resonance Imaging | 1 | 32 | 1239 | 1090 |
| 249 | Molecular Imaging | 1 | 32 | 1378 | 1472 |
| 249 | soil microbiology | 3 | 32 | 1742 | 3270 |
| 252 | Paleontology | 2 | 30 | 1808 | 1933 |
| 252 | Environmental Microbiology | 1 | 30 | 2819 | 3242 |
| 252 | Optical Communications | 2 | 30 | 916 | 944 |
| 252 | pollutants | 2 | 30 | 2754 | 3772 |
| 252 | Environmental pollutants | 2 | 30 | 3273 | 4323 |
| 257 | Marine Geology | 2 | 28 | 835 | 1071 |
| 257 | Petroleum Geology | 2 | 28 | 722 | 994 |
| 257 | Dynamics | 3 | 28 | 2155 | 2476 |
| 257 | Quantum electronics | 3 | 28 | 1298 | 1350 |
| 261 | Industrial Engineering | 2 | 27 | 2707 | 3267 |
| 261 | Agricultural Chemistry | 1 | 27 | 4106 | 4098 |
| 261 | environmental protection | 2 | 27 | 5154 | 6484 |
| 261 | viruses | 1 | 27 | 2830 | 3390 |
| 265 | Neurochemistry | 2 | 26 | 3336 | 4436 |
| 265 | Critical Care | 1 | 26 | 3277 | 3686 |
| 265 | Quantum Computing | 1 | 26 | 350 | 401 |
| 265 | Agricultural Ecology | 1 | 26 | 2280 | 2605 |
| 265 | Critical Care Medicine | 1 | 26 | 2942 | 3446 |
| 270 | Mechanical Engineering | 2 | 25 | 3511 | 3366 |
| 270 | Paleoclimatology | 1 | 25 | 1810 | 1997 |
| 270 | Paleoecology | 1 | 25 | 1754 | 1896 |
| 270 | Paleobiology | 1 | 25 | 739 | 546 |
| 270 | Diagnostic Imaging | 1 | 25 | 4190 | 3785 |
| 270 | Organometallic chemistry | 1 | 25 | 3301 | 2991 |
| 270 | Paleobiogeography | 1 | 25 | 184 | 132 |
| 270 | Fluorescence spectroscopy | 1 | 25 | 630 | 650 |
| 270 | Visual Perception | 37 | 25 | 503 | 3642 |
| 270 | machinery | 1 | 25 | 1543 | 1374 |
| 270 | Memory | 37 | 25 | 570 | 3976 |
| 270 | Attention | 37 | 25 | 520 | 3810 |
| 270 | Perception | 37 | 25 | 594 | 3935 |
| 283 | Number Theory | 1 | 24 | 1532 | 939 |
| 284 | Computer Architecture | 1 | 22 | 951 | 790 |
| 284 | Photochemistry | 2 | 22 | 2633 | 3559 |
| 284 | Electrochemical Analysis | 1 | 22 | 2610 | 2729 |
| 284 | Brachytherapy | 3 | 22 | 383 | 442 |
| 284 | Radioisotopes | 3 | 22 | 1589 | 2117 |
| 289 | visualization | 4 | 21 | 1828 | 1989 |
| 290 | Environmental Science | 1 | 20 | 53 | 93 |
| 290 | Thin Films | 1 | 20 | 1254 | 1111 |
| 292 | Environmental Toxicology | 1 | 19 | 4532 | 5373 |
| 292 | environmental exposure | 1 | 19 | 3904 | 4460 |
| 292 | Cellulose | 1 | 19 | 1294 | 1590 |
| 295 | Soil biology | 2 | 17 | 1271 | 2106 |
| 296 | Nuclear Medicine | 1 | 16 | 2107 | 2208 |
| 296 | Cytoskeleton | 1 | 16 | 589 | 837 |
| 296 | plasma | 1 | 16 | 140 | 154 |
| 299 | Atmospheric Physics | 1 | 15 | 2783 | 3221 |
| 299 | Photobiology | 1 | 15 | 2690 | 3141 |
| 299 | Plant diseases | 1 | 15 | 3322 | 3546 |
| 299 | RNA | 2 | 15 | 774 | 1519 |
| 299 | Semiconductor industry | 1 | 15 | 1278 | 1364 |
| 299 | genome | 3 | 15 | 2124 | 4046 |
| 305 | Biogeochemical cycles | 1 | 14 | 838 | 1275 |
| 306 | Statistical Mechanics | 2 | 13 | 1732 | 1951 |
| 306 | Raman spectroscopy | 1 | 13 | 1649 | 2098 |
| 306 | Infrared spectroscopy | 1 | 13 | 814 | 1093 |
| 306 | Telecommunication | 1 | 13 | 4175 | 3896 |
| 310 | Systems Theory | 2 | 11 | 970 | 1409 |
| 310 | Biological Systems | 2 | 11 | 1167 | 2097 |
| 310 | Social Systems | 2 | 11 | 332 | 528 |
| 310 | Computational Complexity | 3 | 11 | 1239 | 2138 |
| 314 | Chemical analysis | 1 | 10 | 2295 | 3023 |
| 315 | Numerical Analysis | 3 | 9 | 2667 | 4153 |
| 315 | cosmic rays | 7 | 9 | 351 | 1242 |
| 317 | electric vehicles | 1 | 8 | 447 | 628 |
| 317 | Japan | 1 | 8 | 4079 | 4526 |
| 317 | Hazardous waste | 1 | 8 | 1861 | 2856 |
| 320 | Petroleum Engineering | 1 | 7 | 1434 | 1924 |
| 320 | Engineering Mathematics | 1 | 7 | 4448 | 4852 |
| 320 | Molecular evolution | 1 | 7 | 3344 | 4579 |
| 320 | Magnetic Resonance Spectroscopy | 1 | 7 | 2245 | 2771 |
| 320 | nuclear magnetic resonance spectroscopy | 1 | 7 | 1447 | 1797 |
| 320 | NMR | 1 | 7 | 1097 | 1407 |
| 320 | Convergence | 1 | 7 | 132 | 343 |
| 320 | magnetic resonance | 1 | 7 | 1152 | 1458 |
| 328 | Computer Graphics | 1 | 6 | 2997 | 3837 |
| 328 | Neurotoxicology | 1 | 6 | 1254 | 2114 |
| 328 | Politics | 9 | 6 | 374 | 1152 |
| 328 | X-ray spectroscopy | 1 | 6 | 527 | 788 |
| 328 | Metallography | 1 | 6 | 1591 | 2187 |
| 328 | Radio waves | 1 | 6 | 656 | 822 |
| 328 | government | 9 | 6 | 436 | 1444 |
| 335 | Medical Oncology | 2 | 5 | 3148 | 4785 |
| 335 | Composite Materials | 1 | 5 | 4315 | 5604 |
| 335 | Ceramic materials | 1 | 5 | 2455 | 3287 |
| 335 | Interfaces | 2 | 5 | 484 | 1119 |
| 335 | analysis | 1 | 5 | 594 | 830 |
| 335 | Mechanics | 1 | 5 | 2537 | 3033 |
| 341 | Surveying | 1 | 4 | 399 | 500 |
| 341 | Information Systems | 1 | 4 | 3096 | 4454 |
| 341 | Diffraction | 2 | 4 | 216 | 483 |
| 341 | Wireless Communication Systems | 2 | 4 | 2764 | 4207 |
| 341 | Microwave circuits | 2 | 4 | 192 | 455 |
| 341 | cell physiology | 1 | 4 | 2856 | 4160 |
| 341 | Radio frequency | 2 | 4 | 509 | 1079 |
| 348 | Bioinstrumentation | 1 | 3 | 136 | 214 |
| 348 | Fluid Mechanics | 1 | 3 | 3042 | 4094 |
| 348 | Automation | 1 | 3 | 3237 | 4339 |
| 348 | Soil Science | 1 | 3 | 3275 | 4487 |
| 348 | Plasma turbulence | 1 | 3 | 136 | 214 |
| 348 | Integrated Circuits | 1 | 3 | 1511 | 1867 |
| 348 | radiative transfer | 1 | 3 | 1130 | 1617 |
| 348 | Freezing | 2 | 3 | 546 | 1079 |
| 348 | Electrons | 1 | 3 | 261 | 413 |
| 357 | Information Technology | 1 | 2 | 4887 | 6598 |
| 357 | Chromatography | 1 | 2 | 3141 | 4591 |
| 357 | Organometallic compounds | 1 | 2 | 2122 | 2937 |
| 357 | Library Science | 1 | 2 | 2703 | 3240 |
| 357 | libraries | 1 | 2 | 1624 | 1759 |
| 357 | Chemical structure | 1 | 2 | 1190 | 1746 |
| 357 | Chromatographic analysis | 1 | 2 | 3573 | 5036 |
| 357 | information | 1 | 2 | 140 | 236 |
| 357 | Information Science | 1 | 2 | 4777 | 6665 |
| 366 | Hematology | 1 | 1 | 5576 | 6591 |
| 366 | Hemostasis | 1 | 1 | 1707 | 2601 |
| 366 | Computer-Aided Design | 1 | 1 | 2444 | 3638 |
| 366 | Thrombosis | 1 | 1 | 2224 | 3312 |
| 366 | Powder Metallurgy | 1 | 1 | 808 | 1238 |
| 366 | disarmament | 1 | 1 | 400 | 649 |
| 366 | Finite Element Method | 1 | 1 | 622 | 1101 |
| 366 | biological factors | 1 | 1 | 3597 | 5355 |
| 366 | Chemical industry | 1 | 1 | 2602 | 3726 |
| 366 | strategy | 1 | 1 | 484 | 729 |
| 366 | India | 1 | 1 | 3750 | 4874 |
| 366 | Europe | 1 | 1 | 6532 | 8722 |
| 378 | Soil Mechanics | 1 | 0 | 1954 | 2846 |
| 378 | air quality management | 1 | 0 | 1240 | 2350 |
| 378 | Health Physics | 1 | 0 | 574 | 1068 |
| 378 | Democracy | 1 | 0 | 735 | 1073 |
| 378 | Cold War | 1 | 0 | 330 | 421 |
| 378 | Multiphase Flow | 1 | 0 | 730 | 1266 |
| 378 | Crystal growth | 1 | 0 | 1816 | 2669 |
