| 1 | Physics | 8,017 | 619.3K | 22 | 33 |
| 2 | Nuclear Physics | 5,502 | 198.2K | 8 | 15 |
| 3 | Science | 1,200 | 193.8K | 262 | 145 |
| 4 | Biology | 1,058 | 187.8K | 291 | 153 |
| 5 | Condensed Matter | 3,772 | 174.5K | 6 | 10 |
| 6 | Solid State Physics | 3,656 | 167.1K | 9 | 12 |
| 7 | Chemistry | 1,751 | 144.1K | 204 | 139 |
| 8 | Astrophysics | 2,106 | 135.5K | 57 | 64 |
| 9 | Natural history | 430 | 127.5K | 132 | 102 |
| 10 | Materials | 1,900 | 121.1K | 70 | 45 |
| 11 | Spectrum analysis | 1,755 | 110.9K | 39 | 42 |
| 12 | Statistical physics | 2,058 | 88.0K | 3 | 2 |
| 13 | Geophysics | 1,763 | 84.2K | 28 | 23 |
| 14 | Astronomy | 763 | 72.8K | 156 | 99 |
| 15 | Metallurgy | 944 | 61.6K | 8 | 4 |
| 16 | Metals | 788 | 54.8K | 10 | 6 |
| 17 | Crystallography | 190 | 49.2K | 34 | 8 |
| 18 | Materials Science | 1,443 | 49.2K | 46 | 70 |
| 19 | Planets | 873 | 46.5K | 16 | 13 |
| 20 | Molecular Biology | 446 | 46.0K | 557 | 311 |
| 21 | X-ray crystallography | 103 | 44.8K | 15 | 4 |
| 22 | Nanotechnology | 545 | 43.4K | 206 | 148 |
| 23 | Quantum Gravity | 922 | 38.8K | 38 | 46 |
| 24 | Nonlinear Dynamics | 867 | 35.8K | 1 | 4 |
| 25 | Ecology | 239 | 33.0K | 547 | 260 |
| 26 | Biochemistry | 449 | 32.7K | 785 | 445 |
| 27 | Electrochemistry | 1,002 | 30.6K | 37 | 21 |
| 28 | Biotechnology | 241 | 29.4K | 440 | 188 |
| 29 | Fluid Mechanics | 570 | 27.9K | 6 | 5 |
| 30 | Optics | 1,010 | 26.8K | 77 | 70 |
| 31 | Nuclear Engineering | 1,907 | 26.5K | 7 | 7 |
| 32 | Statistical Mechanics | 514 | 26.3K | 4 | 3 |
| 33 | Bioengineering | 209 | 26.2K | 278 | 124 |
| 34 | Microbiology | 264 | 25.8K | 563 | 342 |
| 35 | Electronics | 293 | 25.4K | 187 | 49 |
| 36 | Polymers | 375 | 25.3K | 267 | 115 |
| 37 | Magnetohydrodynamics | 469 | 24.7K | 4 | 3 |
| 38 | Medicine | 327 | 24.0K | 868 | 599 |
| 39 | Virology | 171 | 23.1K | 286 | 216 |
| 40 | Statistics | 189 | 21.6K | 164 | 42 |
| 41 | Mathematics | 467 | 18.5K | 306 | 74 |
| 42 | Biophysics | 390 | 17.5K | 365 | 255 |
| 43 | miniaturization | 162 | 17.1K | 101 | 69 |
| 44 | Mathematical Physics | 444 | 16.6K | 47 | 47 |
| 45 | Microelectronics | 170 | 16.4K | 101 | 58 |
| 46 | Nuclear Energy | 826 | 15.3K | 9 | 6 |
| 47 | viruses | 137 | 15.3K | 120 | 71 |
| 48 | Environment | 141 | 15.0K | 568 | 369 |
| 49 | Cell Biology | 125 | 14.9K | 562 | 435 |
| 50 | nanoscience | 195 | 14.9K | 178 | 145 |
| 51 | Catalysis | 247 | 14.8K | 310 | 238 |
| 52 | Cytology | 124 | 14.4K | 640 | 443 |
| 53 | Research | 212 | 14.4K | 938 | 541 |
| 54 | Meteorology | 189 | 14.2K | 171 | 121 |
| 55 | Quality Control | 247 | 13.8K | 5 | 5 |
| 56 | Plastics | 158 | 13.8K | 30 | 2 |
| 57 | plasticity | 155 | 13.8K | 1 | 1 |
| 58 | Microbial Ecology | 114 | 13.7K | 195 | 115 |
| 59 | Bacteriology | 64 | 12.9K | 300 | 100 |
| 60 | Experimental Design | 97 | 12.7K | 7 | 5 |
| 61 | Chemical Engineering | 155 | 12.2K | 614 | 317 |
| 62 | Geology | 263 | 12.2K | 216 | 172 |
| 63 | Climatology | 130 | 12.0K | 152 | 80 |
| 64 | Geochemistry | 259 | 11.2K | 110 | 128 |
| 65 | Engineering | 232 | 10.8K | 180 | 63 |
| 66 | Biochemical Engineering | 55 | 10.6K | 719 | 284 |
| 67 | Botany | 53 | 10.4K | 981 | 335 |
| 68 | Nanostructured Materials | 213 | 10.4K | 211 | 167 |
| 69 | Technology | 185 | 9.6K | 267 | 116 |
| 70 | Hydrology | 174 | 8.9K | 127 | 98 |
| 71 | Genetics | 113 | 8.8K | 492 | 441 |
| 72 | Nuclear Fusion | 384 | 8.7K | 29 | 29 |
| 73 | polymerization | 155 | 8.7K | 494 | 275 |
| 74 | Pollution | 150 | 8.6K | 606 | 564 |
| 75 | Oceanography | 105 | 8.6K | 219 | 120 |
| 76 | Superconductors | 348 | 8.2K | 18 | 10 |
| 77 | Immunity | 72 | 8.0K | 299 | 283 |
| 78 | Meteorites | 145 | 8.0K | 70 | 92 |
| 79 | Photonics | 71 | 7.9K | 324 | 135 |
| 80 | Ceramics | 172 | 7.9K | 57 | 38 |
| 81 | Water | 145 | 7.9K | 170 | 199 |
| 82 | Glass | 161 | 7.8K | 46 | 37 |
| 82 | pottery | 160 | 7.8K | 46 | 37 |
| 84 | Physical Chemistry | 163 | 7.8K | 110 | 115 |
| 85 | Biocompatible Materials | 131 | 7.8K | 509 | 454 |
| 86 | Computational Biology | 151 | 7.7K | 149 | 186 |
| 87 | water supply | 126 | 7.6K | 49 | 45 |
| 88 | Solid State Chemistry | 260 | 7.6K | 46 | 44 |
| 89 | Solar System | 139 | 7.6K | 55 | 43 |
| 90 | Genomics | 255 | 7.3K | 106 | 184 |
| 91 | Immunology | 76 | 7.1K | 680 | 438 |
| 92 | Energy Conversion | 54 | 7.1K | 171 | 143 |
| 93 | Forest Ecology | 8 | 6.9K | 634 | 37 |
| 94 | Forest Management | 6 | 6.8K | 711 | 37 |
| 95 | Biomedical Engineering | 117 | 6.8K | 650 | 396 |
| 96 | Atmospheric Physics | 174 | 6.5K | 128 | 163 |
| 97 | Atomic spectroscopy | 172 | 6.4K | 9 | 11 |
| 98 | Analytical Chemistry | 201 | 6.2K | 400 | 419 |
| 99 | Surface Chemistry | 151 | 6.2K | 400 | 342 |
| 100 | Nuclear Chemistry | 421 | 6.1K | 3 | 4 |
| 101 | Radiation | 273 | 6.1K | 19 | 40 |
| 102 | Environmental Chemistry | 33 | 6.0K | 441 | 192 |
| 103 | Light | 29 | 5.9K | 182 | 84 |
| 104 | Environmental Health | 128 | 5.8K | 626 | 606 |
| 105 | gene mapping | 95 | 5.7K | 156 | 168 |
| 106 | Host-parasite interactions | 58 | 5.6K | 159 | 145 |
| 107 | Molecules | 196 | 5.4K | 23 | 41 |
| 108 | Chromosome mapping | 88 | 5.4K | 124 | 101 |
| 109 | Mineralogy | 189 | 5.4K | 43 | 83 |
| 110 | Medical Physics | 65 | 5.2K | 328 | 140 |
| 111 | Artificial Intelligence | 54 | 5.1K | 782 | 318 |
| 112 | Signal Processing | 60 | 5.0K | 513 | 283 |
| 113 | Environmental Engineering | 89 | 5.0K | 447 | 391 |
| 114 | nucleic acids | 53 | 5.0K | 340 | 302 |
| 115 | Colloids | 136 | 4.8K | 464 | 466 |
| 116 | Radiochemistry | 388 | 4.8K | 4 | 4 |
| 117 | Liver diseases | 31 | 4.8K | 412 | 234 |
| 118 | Optical materials | 110 | 4.5K | 284 | 328 |
| 119 | proteins | 64 | 4.4K | 278 | 152 |
| 120 | Medical Laboratory Science | 79 | 4.3K | 210 | 205 |
| 121 | Fluid Dynamics | 90 | 4.2K | 72 | 38 |
| 122 | Renewable Energy Sources | 23 | 4.2K | 866 | 356 |
| 123 | Plant physiology | 29 | 4.2K | 647 | 272 |
| 124 | explosives | 186 | 4.1K | 3 | 1 |
| 125 | Plant cells | 28 | 4.1K | 353 | 281 |
| 126 | Membranes | 47 | 4.1K | 332 | 192 |
| 127 | Greenhouse gases | 81 | 4.1K | 7 | 7 |
| 128 | protein | 49 | 4.1K | 175 | 97 |
| 129 | Human genetics | 26 | 4.0K | 782 | 872 |
| 130 | energy conservation | 40 | 4.0K | 372 | 233 |
| 131 | Electrical Engineering | 705 | 4.0K | 39 | 163 |
| 132 | Quantum electronics | 163 | 4.0K | 82 | 84 |
| 133 | Information Theory | 52 | 4.0K | 218 | 112 |
| 134 | Telecommunication | 45 | 4.0K | 602 | 293 |
| 135 | lasers | 169 | 4.0K | 125 | 107 |
| 136 | Nanostructures | 40 | 3.9K | 326 | 192 |
| 137 | radiative transfer | 143 | 3.9K | 9 | 18 |
| 138 | Virulence | 48 | 3.8K | 176 | 175 |
| 139 | Quantum theory | 138 | 3.7K | 10 | 21 |
| 140 | Bioinformatics | 62 | 3.6K | 290 | 279 |
| 141 | Superconductivity | 89 | 3.6K | 21 | 12 |
| 142 | atmospheric models | 68 | 3.6K | 64 | 79 |
| 143 | sanitation | 51 | 3.5K | 291 | 320 |
| 144 | optical instruments | 68 | 3.5K | 29 | 29 |
| 145 | Earth Sciences | 91 | 3.5K | 431 | 389 |
| 146 | Smart Materials | 38 | 3.4K | 106 | 34 |
| 146 | Molecular Spectroscopy | 108 | 3.4K | 59 | 45 |
| 148 | Geochemical Modeling | 49 | 3.4K | 19 | 17 |
| 148 | geological modeling | 49 | 3.4K | 22 | 17 |
| 150 | biological evolution | 29 | 3.3K | 594 | 387 |
| 151 | energy development | 13 | 3.2K | 260 | 83 |
| 152 | Atmospheric Chemistry | 42 | 3.2K | 215 | 194 |
| 153 | Marine Meteorology | 36 | 3.2K | 76 | 38 |
| 154 | Climate change | 29 | 3.2K | 255 | 312 |
| 154 | Biodiversity conservation | 29 | 3.2K | 447 | 394 |
| 154 | Eutrophication | 29 | 3.2K | 251 | 310 |
| 157 | Combustion | 116 | 3.1K | 102 | 120 |
| 158 | plant communities | 24 | 3.0K | 294 | 134 |
| 159 | Radio | 75 | 3.0K | 229 | 250 |
| 160 | mass transfer | 53 | 3.0K | 261 | 161 |
| 161 | genome | 34 | 2.9K | 356 | 351 |
| 162 | Nondestructive testing | 51 | 2.9K | 47 | 8 |
| 163 | Sun | 57 | 2.8K | 68 | 49 |
| 164 | Carbon | 85 | 2.8K | 87 | 183 |
| 165 | Numerical Analysis | 109 | 2.7K | 132 | 102 |
| 166 | Hydrodynamics | 52 | 2.7K | 43 | 24 |
| 167 | Image Processing | 27 | 2.7K | 723 | 320 |
| 168 | Semiconductors | 57 | 2.7K | 307 | 105 |
| 169 | Hydraulic Engineering | 56 | 2.7K | 102 | 57 |
| 170 | Evolution | 27 | 2.6K | 540 | 377 |
| 171 | cryosphere | 59 | 2.6K | 26 | 39 |
| 172 | Natural resources | 49 | 2.6K | 61 | 52 |
| 173 | space environment | 74 | 2.5K | 8 | 7 |
| 174 | Materials Engineering | 62 | 2.5K | 13 | 2 |
| 175 | Molecular structure | 48 | 2.3K | 366 | 329 |
| 176 | Mechanical Engineering | 51 | 2.3K | 483 | 166 |
| 177 | Energy Policy | 28 | 2.3K | 799 | 475 |
| 178 | Nanoparticles | 36 | 2.3K | 394 | 246 |
| 179 | Geomagnetism | 78 | 2.3K | 45 | 48 |
| 180 | fuel cells | 39 | 2.2K | 257 | 258 |
| 181 | Molecular evolution | 29 | 2.2K | 356 | 254 |
| 182 | Immune system | 9 | 2.2K | 563 | 339 |
| 183 | Biodiversity | 22 | 2.2K | 665 | 339 |
| 184 | Chromosomes | 19 | 2.2K | 289 | 91 |
| 185 | Quantum Optics | 85 | 2.2K | 29 | 40 |
| 186 | clay | 21 | 2.1K | 136 | 41 |
| 187 | Groundwater | 58 | 2.1K | 37 | 27 |
| 188 | United States | 68 | 2.1K | 885 | 808 |
| 189 | Multiphase Flow | 27 | 2.1K | 43 | 22 |
| 190 | Organometallic compounds | 48 | 2.1K | 147 | 94 |
| 191 | Electrochemical Analysis | 32 | 2.1K | 340 | 130 |
| 192 | Computer Graphics | 79 | 2.1K | 186 | 236 |
| 193 | Particle Physics | 28 | 2.1K | 15 | 11 |
| 194 | Environmental Microbiology | 27 | 2.0K | 305 | 247 |
| 195 | Laser Spectroscopy | 75 | 2.0K | 29 | 37 |
| 196 | biocatalysis | 6 | 2.0K | 98 | 71 |
| 196 | Homogeneous catalysis | 6 | 2.0K | 98 | 71 |
| 196 | Heterogeneous catalysis | 6 | 2.0K | 98 | 71 |
| 199 | clay minerals | 18 | 2.0K | 54 | 16 |
| 200 | Bacterial infections | 13 | 2.0K | 292 | 180 |
| 201 | mycoses | 12 | 1.9K | 300 | 174 |
| 202 | Cosmology | 50 | 1.9K | 43 | 58 |
| 203 | Radioisotopes | 146 | 1.9K | 24 | 38 |
| 204 | Structural design | 23 | 1.9K | 156 | 53 |
| 205 | fusion reactors | 182 | 1.9K | 32 | 33 |
| 206 | cell physiology | 39 | 1.9K | 313 | 365 |
| 207 | Planetary Science | 49 | 1.9K | 64 | 36 |
| 208 | Seismology | 94 | 1.9K | 29 | 54 |
| 209 | Hydrogeology | 60 | 1.9K | 21 | 26 |
| 210 | Laser-plasma interactions | 98 | 1.8K | 2 | 2 |
| 210 | Plasma density | 98 | 1.8K | 2 | 2 |
| 212 | Cosmochemistry | 50 | 1.8K | 76 | 105 |
| 213 | Elementary particles | 20 | 1.8K | 13 | 16 |
| 214 | Engineering Mathematics | 87 | 1.8K | 130 | 147 |
| 215 | Plants | 8 | 1.8K | 1311 | 495 |
| 216 | Industrial Safety | 44 | 1.8K | 121 | 89 |
| 217 | enzymes | 17 | 1.8K | 567 | 203 |
| 218 | Physiology | 47 | 1.8K | 1068 | 1038 |
| 219 | actuators | 29 | 1.7K | 640 | 411 |
| 219 | transducers | 29 | 1.7K | 640 | 411 |
| 221 | plant molecular biology | 6 | 1.7K | 1088 | 489 |
| 222 | nuclear magnetic resonance | 69 | 1.7K | 129 | 151 |
| 223 | Green Chemistry | 30 | 1.6K | 464 | 438 |
| 224 | Plant Ecology | 12 | 1.6K | 861 | 390 |
| 225 | Dynamics | 83 | 1.6K | 62 | 72 |
| 226 | Composite Materials | 53 | 1.6K | 579 | 724 |
| 227 | Environmental monitoring | 50 | 1.5K | 798 | 999 |
| 228 | Magnetic Resonance Spectroscopy | 70 | 1.5K | 129 | 157 |
| 229 | Intelligent Control Systems | 16 | 1.5K | 300 | 25 |
| 230 | Organic Chemistry | 36 | 1.5K | 1031 | 763 |
| 231 | System analysis | 26 | 1.5K | 664 | 330 |
| 232 | vibration | 45 | 1.5K | 146 | 150 |
| 233 | Metallography | 55 | 1.5K | 56 | 43 |
| 234 | Biogeochemistry | 30 | 1.5K | 285 | 316 |
| 235 | Fracture mechanics | 42 | 1.5K | 298 | 202 |
| 236 | Mass Spectrometry | 31 | 1.4K | 272 | 188 |
| 237 | Information Science | 16 | 1.4K | 1026 | 456 |
| 238 | Structural health monitoring | 23 | 1.4K | 15 | 11 |
| 238 | structural stability | 23 | 1.4K | 51 | 29 |
| 240 | Freezing | 51 | 1.4K | 29 | 10 |
| 241 | Computational Fluid Dynamics | 63 | 1.4K | 17 | 29 |
| 242 | Computer-Aided Design | 34 | 1.4K | 191 | 146 |
| 243 | Energy Storage | 34 | 1.4K | 239 | 241 |
| 244 | mathematical analysis | 58 | 1.4K | 450 | 270 |
| 245 | Automation | 25 | 1.4K | 749 | 596 |
| 246 | Water pollution | 43 | 1.4K | 643 | 781 |
| 247 | Software Engineering | 7 | 1.3K | 658 | 168 |
| 248 | environmental pollution | 61 | 1.3K | 907 | 1393 |
| 249 | Ocean Engineering | 9 | 1.3K | 1062 | 356 |
| 250 | Toxicology | 46 | 1.3K | 1237 | 1369 |
| 251 | Environmental Policy | 37 | 1.2K | 769 | 974 |
| 252 | Radiobiology | 51 | 1.2K | 284 | 381 |
| 253 | Structural dynamics | 40 | 1.2K | 166 | 225 |
| 254 | Rock Mechanics | 37 | 1.2K | 178 | 179 |
| 255 | drug development | 13 | 1.2K | 391 | 371 |
| 256 | coal | 19 | 1.2K | 592 | 405 |
| 257 | Earthquakes | 53 | 1.2K | 28 | 32 |
| 258 | Thermodynamics | 52 | 1.2K | 99 | 69 |
| 259 | Rheology | 19 | 1.2K | 151 | 70 |
| 260 | nuclear power | 101 | 1.2K | 31 | 29 |
| 261 | Luminescence | 30 | 1.2K | 222 | 78 |
| 262 | Medical innovations | 11 | 1.2K | 443 | 432 |
| 263 | Sound | 54 | 1.2K | 119 | 151 |
| 264 | Geomorphology | 19 | 1.2K | 484 | 336 |
| 265 | Organometallic chemistry | 33 | 1.2K | 425 | 175 |
| 266 | particle accelerators | 69 | 1.2K | 10 | 14 |
| 267 | Thermochemistry | 39 | 1.1K | 60 | 49 |
| 268 | Bioorganic chemistry | 13 | 1.1K | 1534 | 825 |
| 269 | industrial hygiene | 110 | 1.1K | 19 | 36 |
| 270 | particle beams | 66 | 1.1K | 10 | 14 |
| 271 | Quantum Computing | 14 | 1.1K | 46 | 15 |
| 272 | Computational Chemistry | 17 | 1.1K | 154 | 134 |
| 273 | Genetic engineering | 21 | 1.1K | 776 | 645 |
| 274 | nuclear astrophysics | 34 | 1.1K | 52 | 72 |
| 275 | Biomass Energy | 16 | 1.1K | 1040 | 828 |
| 276 | Cancer | 7 | 1.1K | 2496 | 1389 |
| 277 | Geothermal Energy | 40 | 1.1K | 15 | 17 |
| 278 | Soil Mechanics | 29 | 1.1K | 309 | 271 |
| 279 | Bioinorganic chemistry | 31 | 1.1K | 304 | 226 |
| 280 | Turbulence | 31 | 1.1K | 13 | 13 |
| 281 | Medical genetics | 12 | 1.0K | 1523 | 1218 |
| 282 | impact | 53 | 1.0K | 26 | 67 |
| 283 | Differential Equations | 6 | 1.0K | 676 | 118 |
| 284 | Volcanoes | 20 | 1.0K | 58 | 39 |
| 285 | Energy Harvesting | 18 | 997 | 132 | 201 |
| 286 | Agriculture | 24 | 994 | 600 | 470 |
| 287 | Ultrasonics | 55 | 986 | 108 | 247 |
| 288 | Ultrasound | 54 | 980 | 71 | 119 |
| 289 | Combinatorial analysis | 27 | 973 | 220 | 82 |
| 290 | Environmental Management | 9 | 962 | 1811 | 1054 |
| 291 | soil microbiology | 20 | 951 | 505 | 578 |
| 292 | Data Mining | 26 | 947 | 326 | 419 |
| 293 | Porous materials | 27 | 946 | 87 | 50 |
| 294 | Plasma devices | 17 | 943 | 80 | 71 |
| 295 | Biogeochemical cycles | 15 | 940 | 150 | 208 |
| 296 | visualization | 42 | 938 | 284 | 180 |
| 297 | occupational health and safety | 90 | 933 | 7 | 12 |
| 298 | Geodynamics | 20 | 927 | 315 | 261 |
| 299 | Heterocyclic compounds | 34 | 919 | 156 | 49 |
| 300 | Proteome | 15 | 902 | 476 | 400 |
| 301 | pollutants | 40 | 895 | 308 | 528 |
| 301 | Environmental pollutants | 40 | 895 | 404 | 625 |
| 303 | computer networks | 30 | 893 | 717 | 660 |
| 304 | Surgery | 4 | 891 | 1700 | 870 |
| 304 | Metallic Glasses | 19 | 891 | 119 | 72 |
| 306 | Visual Perception | 67 | 881 | 246 | 492 |
| 307 | Immunotherapy | 7 | 863 | 1389 | 753 |
| 307 | Industrial Microbiology | 12 | 863 | 904 | 635 |
| 307 | management | 13 | 863 | 1637 | 1147 |
| 310 | Cytogenetics | 14 | 860 | 648 | 643 |
| 311 | Stochastic Processes | 34 | 852 | 86 | 61 |
| 312 | Oncogenes | 8 | 846 | 753 | 611 |
| 313 | Public Health | 18 | 840 | 2390 | 1894 |
| 314 | infection | 14 | 826 | 771 | 554 |
| 315 | Biogeography | 9 | 824 | 498 | 403 |
| 316 | Mechanics | 29 | 812 | 250 | 190 |
| 317 | Genetic algorithms | 6 | 809 | 193 | 134 |
| 317 | Evolutionary Computation | 6 | 809 | 255 | 157 |
| 319 | Memory | 64 | 804 | 297 | 620 |
| 319 | Attention | 64 | 804 | 260 | 538 |
| 319 | Perception | 64 | 804 | 311 | 606 |
| 322 | Biometrics | 32 | 794 | 253 | 276 |
| 323 | Quantum Communication | 12 | 791 | 51 | 35 |
| 324 | Marine Biology | 12 | 787 | 1348 | 853 |
| 324 | Soil biology | 11 | 787 | 457 | 396 |
| 326 | Neurology | 19 | 786 | 2347 | 2251 |
| 327 | Chemical analysis | 11 | 781 | 543 | 238 |
| 328 | Industrial Engineering | 25 | 778 | 505 | 492 |
| 329 | Geography | 24 | 772 | 629 | 593 |
| 330 | Diagnostic Imaging | 26 | 762 | 582 | 615 |
| 331 | Organelle biogenesis | 12 | 758 | 51 | 23 |
| 332 | Mining Engineering | 15 | 755 | 175 | 113 |
| 333 | Sustainable Engineering | 28 | 754 | 387 | 552 |
| 334 | Radiology | 50 | 745 | 243 | 312 |
| 335 | environmental protection | 17 | 733 | 1506 | 1249 |
| 336 | Computer Architecture | 12 | 727 | 188 | 54 |
| 337 | Soft Condensed Matter | 33 | 716 | 245 | 327 |
| 338 | Measurement | 29 | 715 | 257 | 230 |
| 339 | Synchrotron Radiation | 25 | 710 | 76 | 60 |
| 339 | Informatics | 13 | 710 | 308 | 189 |
| 341 | Magnetic Materials | 31 | 704 | 413 | 468 |
| 342 | Radiography | 9 | 703 | 455 | 368 |
| 343 | Systems Biology | 26 | 701 | 416 | 411 |
| 344 | Crystal growth | 20 | 695 | 284 | 239 |
| 345 | Engineering Geology | 27 | 694 | 370 | 423 |
| 346 | Proteomics | 8 | 692 | 688 | 391 |
| 347 | Petroleum Engineering | 29 | 684 | 182 | 183 |
| 347 | Plasma chemistry | 9 | 684 | 163 | 54 |
| 349 | Shock Waves | 29 | 673 | 26 | 18 |
| 350 | Transplantation | 9 | 671 | 682 | 513 |
| 351 | Structural Engineering | 8 | 669 | 1056 | 488 |
| 352 | ecosystem | 11 | 666 | 640 | 536 |
| 353 | data collection | 16 | 658 | 288 | 379 |
| 354 | Antibodies | 14 | 655 | 241 | 186 |
| 354 | Antigens | 14 | 655 | 363 | 262 |
| 356 | Computer Science | 13 | 650 | 880 | 341 |
| 357 | Wireless Communication Systems | 13 | 648 | 1242 | 752 |
| 358 | Acoustics | 11 | 644 | 176 | 75 |
| 359 | Analytical Biochemistry | 31 | 638 | 351 | 537 |
| 360 | Aerosols | 19 | 637 | 162 | 161 |
| 361 | health planning | 36 | 634 | 426 | 503 |
| 362 | Hematology | 12 | 627 | 1557 | 1279 |
| 363 | Radiation Protection | 62 | 625 | 28 | 43 |
| 363 | radiation monitoring | 62 | 625 | 25 | 36 |
| 365 | United Kingdom | 7 | 621 | 1021 | 645 |
| 366 | Epidemiology | 16 | 620 | 1676 | 1384 |
| 367 | Pharmacology | 21 | 614 | 2368 | 2431 |
| 367 | Speech acoustics | 9 | 614 | 86 | 72 |
| 369 | Ferroelectricity | 41 | 604 | 173 | 200 |
| 370 | biopolymers | 26 | 601 | 334 | 416 |
| 371 | Pharmaceutical Chemistry | 11 | 597 | 2321 | 1777 |
| 372 | air | 17 | 595 | 33 | 65 |
| 372 | Climate | 17 | 595 | 106 | 153 |
| 374 | Systems Analysis | 5 | 594 | 857 | 199 |
| 375 | Civil Engineering | 5 | 593 | 1276 | 175 |
| 376 | Computer Engineering | 9 | 592 | 442 | 94 |
| 376 | Public Policy | 4 | 592 | 1595 | 542 |
| 376 | Radiation dosimetry | 59 | 592 | 15 | 18 |
| 379 | Flow cytometry | 25 | 590 | 36 | 81 |
| 380 | Finite Element Method | 4 | 589 | 242 | 28 |
| 381 | Alloys | 47 | 587 | 11 | 14 |
| 382 | Quality Management | 86 | 573 | 3 | 8 |
| 383 | Photography | 229 | 570 | 105 | 155 |
| 384 | Ultrasonic Imaging | 33 | 566 | 41 | 89 |
| 385 | Quantum Mechanics | 3 | 563 | 156 | 9 |
| 386 | Microscopy | 35 | 558 | 219 | 353 |
| 387 | Photochemistry | 12 | 556 | 794 | 555 |
| 388 | Diagnostic microbiology | 7 | 553 | 845 | 775 |
| 389 | Petrology | 8 | 550 | 595 | 426 |
| 389 | Protein engineering | 13 | 550 | 61 | 70 |
| 389 | molecular design | 13 | 550 | 73 | 70 |
| 392 | Molecular Genetics | 16 | 549 | 753 | 862 |
| 393 | soil management | 2 | 542 | 704 | 189 |
| 393 | tillage | 2 | 542 | 523 | 154 |
| 395 | Vaccines | 9 | 538 | 1145 | 752 |
| 396 | Mycology | 11 | 531 | 848 | 642 |
| 397 | Solar Energy | 26 | 529 | 419 | 753 |
| 397 | Ion Exchange | 19 | 529 | 23 | 25 |
| 397 | Solvent extraction | 19 | 529 | 23 | 25 |
| 400 | Clinical Chemistry | 8 | 528 | 1985 | 1402 |
| 401 | Microwaves | 18 | 520 | 599 | 445 |
| 402 | Agricultural Ecology | 10 | 519 | 516 | 513 |
| 403 | energy resources | 11 | 514 | 683 | 832 |
| 404 | phase diagrams | 45 | 504 | 18 | 26 |
| 405 | Carbohydrates | 4 | 500 | 374 | 164 |
| 406 | Cybernetics | 25 | 496 | 442 | 666 |
| 407 | optical devices | 11 | 466 | 169 | 66 |
| 408 | Combinatorial chemistry | 8 | 464 | 444 | 407 |
| 409 | Algorithms | 9 | 457 | 299 | 116 |
| 409 | Radio wave propagation | 32 | 457 | 129 | 142 |
| 411 | Mobile Computing | 9 | 454 | 614 | 366 |
| 412 | atmosphere | 15 | 451 | 254 | 263 |
| 413 | exobiology | 8 | 449 | 117 | 131 |
| 414 | glycoproteins | 2 | 448 | 614 | 195 |
| 414 | Glycoconjugates | 2 | 448 | 614 | 195 |
| 414 | Oligosaccharide | 2 | 448 | 407 | 146 |
| 414 | glycolipids | 2 | 448 | 614 | 195 |
| 418 | Antiviral agents | 16 | 447 | 78 | 90 |
| 419 | Multimedia Systems | 14 | 444 | 781 | 527 |
| 420 | Earthquake Engineering | 14 | 443 | 631 | 598 |
| 421 | Birds | 7 | 437 | 776 | 345 |
| 422 | Culture techniques | 17 | 423 | 75 | 83 |
| 423 | Crystallization | 24 | 421 | 84 | 111 |
| 424 | Remote Sensing | 10 | 419 | 800 | 371 |
| 424 | Detectors | 14 | 419 | 643 | 492 |
| 426 | Radio frequency | 21 | 414 | 112 | 161 |
| 427 | mutation | 7 | 407 | 362 | 304 |
| 428 | Bioenergetics | 10 | 395 | 390 | 389 |
| 428 | Energy metabolism | 10 | 395 | 304 | 328 |
| 430 | Hydrometeorology | 8 | 394 | 102 | 138 |
| 431 | public works | 2 | 393 | 192 | 19 |
| 432 | Radiopharmaceuticals | 49 | 389 | 18 | 37 |
| 433 | Control Theory | 15 | 381 | 773 | 680 |
| 433 | Marine Pollution | 4 | 381 | 1122 | 630 |
| 435 | Ceramic materials | 11 | 379 | 662 | 510 |
| 436 | Nuclear Medicine | 14 | 373 | 466 | 484 |
| 437 | Manufacturing Processes | 21 | 371 | 862 | 1082 |
| 438 | Parallel Processing | 18 | 370 | 144 | 253 |
| 439 | Medical Oncology | 16 | 369 | 808 | 1089 |
| 440 | extraterrestrial environment | 20 | 368 | 141 | 148 |
| 441 | Psychiatry | 5 | 365 | 3451 | 2319 |
| 442 | Climate Change Mitigation | 3 | 364 | 28 | 38 |
| 442 | Global warming | 3 | 364 | 105 | 39 |
| 442 | sea level | 3 | 364 | 28 | 38 |
| 442 | astronomical phenomena | 19 | 364 | 133 | 138 |
| 446 | Environmental Geology | 9 | 362 | 928 | 727 |
| 447 | Kinetics | 16 | 358 | 98 | 105 |
| 448 | Brain | 8 | 355 | 1705 | 1503 |
| 449 | Ecohydrology | 9 | 350 | 121 | 79 |
| 449 | Aquatic ecology | 9 | 350 | 490 | 357 |
| 451 | Microprocessors | 5 | 339 | 483 | 125 |
| 452 | Plasma polymerization | 2 | 325 | 327 | 80 |
| 453 | Cell differentiation | 10 | 323 | 946 | 1292 |
| 454 | analysis | 7 | 307 | 180 | 162 |
| 455 | Educational Psychology | 14 | 306 | 582 | 701 |
| 455 | Biomolecules | 3 | 306 | 475 | 281 |
| 455 | Structure-activity relationship | 3 | 306 | 244 | 149 |
| 458 | Minerals | 14 | 303 | 203 | 256 |
| 459 | Nanobiotechnology | 2 | 302 | 600 | 268 |
| 460 | Paleoclimatology | 10 | 301 | 613 | 645 |
| 460 | Immunochemistry | 16 | 301 | 309 | 455 |
| 462 | Computer Vision | 6 | 300 | 855 | 744 |
| 463 | Information Systems | 16 | 298 | 445 | 648 |
| 464 | Molecular Microbiology | 5 | 293 | 664 | 696 |
| 465 | Approximation Theory | 6 | 292 | 260 | 89 |
| 466 | Geobiology | 13 | 291 | 156 | 204 |
| 467 | Environmental Toxicology | 6 | 287 | 1844 | 1631 |
| 467 | Radio waves | 15 | 287 | 409 | 550 |
| 469 | Ornithology | 5 | 285 | 756 | 366 |
| 470 | Bibliometrics | 4 | 282 | 105 | 54 |
| 471 | Respiratory Infections | 1 | 281 | 706 | 137 |
| 471 | Ore deposits | 1 | 281 | 819 | 267 |
| 471 | Fungi | 6 | 281 | 744 | 680 |
| 471 | Influenza | 1 | 281 | 536 | 86 |
| 475 | Population Genetics | 8 | 276 | 700 | 791 |
| 476 | Operations Research | 16 | 273 | 920 | 1132 |
| 476 | gastrointestinal tract | 1 | 273 | 666 | 247 |
| 478 | Paleoecology | 8 | 272 | 659 | 633 |
| 478 | Fire ecology | 8 | 272 | 24 | 20 |
| 478 | Paleogeography | 8 | 272 | 591 | 581 |
| 481 | Cellulose | 6 | 271 | 371 | 310 |
| 482 | nuclear magnetic resonance spectroscopy | 9 | 267 | 391 | 299 |
| 482 | DNA repair | 5 | 267 | 217 | 167 |
| 484 | DNA polymerases | 6 | 264 | 289 | 586 |
| 485 | Chemical kinetics | 15 | 261 | 198 | 138 |
| 485 | concrete | 8 | 261 | 556 | 700 |
| 487 | Hazardous waste | 20 | 259 | 188 | 745 |
| 488 | Metabolism | 5 | 255 | 2233 | 2128 |
| 488 | Risk Management | 10 | 255 | 296 | 326 |
| 490 | Robotics | 12 | 253 | 874 | 956 |
| 490 | Quantum Chemistry | 9 | 253 | 29 | 41 |
| 490 | Fiber Optics | 10 | 253 | 561 | 512 |
| 490 | mammals | 11 | 253 | 453 | 469 |
| 494 | Cell cycle | 7 | 252 | 160 | 129 |
| 494 | cell proliferation | 7 | 252 | 187 | 143 |
| 496 | Water quality management | 9 | 251 | 1053 | 886 |
| 497 | Imaging systems | 4 | 247 | 725 | 195 |
| 498 | Oncology | 1 | 245 | 3788 | 2132 |
| 498 | Zeolites | 11 | 245 | 395 | 590 |
| 500 | Medical Microbiology | 10 | 243 | 1333 | 1784 |
| 501 | Plate Tectonics | 5 | 242 | 196 | 110 |
| 502 | Neurochemistry | 9 | 240 | 1473 | 1653 |
| 503 | Information Technology | 4 | 239 | 2212 | 1308 |
| 504 | Electromagnetism | 10 | 238 | 556 | 498 |
| 505 | Pharmacy | 2 | 237 | 2675 | 1343 |
| 505 | Psychophysiology | 3 | 237 | 2642 | 1938 |
| 507 | Biosensors | 6 | 234 | 935 | 1170 |
| 507 | Probability | 8 | 234 | 306 | 314 |
| 507 | Financial management | 8 | 234 | 239 | 348 |
| 507 | Risk | 9 | 234 | 266 | 337 |
| 507 | Bioelectronics | 6 | 234 | 809 | 1068 |
| 512 | Developmental Psychology | 2 | 231 | 1195 | 650 |
| 512 | Parasitic Diseases | 6 | 231 | 1437 | 1254 |
| 512 | human development | 2 | 231 | 951 | 492 |
| 515 | Systems Theory | 15 | 230 | 60 | 52 |
| 516 | Psychopharmacology | 2 | 228 | 1856 | 1193 |
| 517 | cell membrane | 7 | 227 | 351 | 443 |
| 518 | particles | 7 | 225 | 588 | 477 |
| 519 | Medical Technology | 8 | 221 | 1004 | 1039 |
| 519 | Cement | 7 | 221 | 342 | 526 |
| 521 | cosmic rays | 21 | 219 | 109 | 199 |
| 521 | Surface properties | 7 | 219 | 748 | 885 |
| 523 | Wind power | 7 | 217 | 140 | 118 |
| 524 | Tribology | 5 | 215 | 1017 | 694 |
| 524 | Comparative Physiology | 3 | 215 | 745 | 486 |
| 526 | Parasitology | 5 | 214 | 1845 | 1368 |
| 527 | cell movement | 3 | 213 | 231 | 177 |
| 527 | Reproduction | 7 | 213 | 1607 | 1491 |
| 529 | Geographic information systems | 11 | 211 | 464 | 434 |
| 530 | Evolutionary Genetics | 9 | 209 | 241 | 352 |
| 530 | Molecular Epidemiology | 9 | 209 | 241 | 352 |
| 532 | disease vectors | 4 | 208 | 830 | 609 |
| 532 | Parasites | 4 | 208 | 1436 | 945 |
| 534 | Oxidation | 6 | 206 | 89 | 76 |
| 535 | radioactive waste | 19 | 204 | 143 | 806 |
| 536 | Pathology | 3 | 203 | 2308 | 1745 |
| 537 | Landscape Ecology | 2 | 202 | 583 | 331 |
| 538 | Social behavior | 4 | 198 | 979 | 775 |
| 539 | ground penetrating radar | 1 | 195 | 165 | 4 |
| 540 | investigative techniques | 3 | 194 | 100 | 73 |
| 541 | Social Networks | 4 | 192 | 224 | 179 |
| 542 | Structuralism | 3 | 191 | 145 | 142 |
| 543 | Machine Learning | 9 | 189 | 146 | 239 |
| 544 | Cytoskeleton | 1 | 188 | 453 | 176 |
| 545 | Neurophysiology | 4 | 187 | 2496 | 2226 |
| 545 | Raman spectroscopy | 16 | 187 | 182 | 422 |
| 547 | Soil Science | 7 | 186 | 1283 | 1371 |
| 547 | biological monitoring | 6 | 186 | 316 | 329 |
| 549 | Granular materials | 4 | 185 | 499 | 333 |
| 549 | mathematical concepts | 7 | 185 | 197 | 132 |
| 551 | Electromagnetic compatibility | 8 | 183 | 224 | 201 |
| 552 | Recombinant DNA | 4 | 182 | 1440 | 1117 |
| 552 | Entomology | 5 | 182 | 1835 | 1244 |
| 552 | Phylogeny | 2 | 182 | 1072 | 736 |
| 555 | Nanochemistry | 9 | 181 | 635 | 675 |
| 556 | Respiration | 4 | 180 | 1327 | 1144 |
| 557 | monoclonal antibodies | 8 | 179 | 116 | 151 |
| 558 | Anthropology | 9 | 177 | 809 | 774 |
| 558 | Agricultural Science | 4 | 177 | 164 | 246 |
| 560 | Occupational Health | 17 | 175 | 310 | 560 |
| 560 | Multivariate Analysis | 3 | 175 | 515 | 277 |
| 560 | brain mapping | 5 | 175 | 519 | 613 |
| 563 | Nonlinear mechanics | 8 | 173 | 204 | 206 |
| 564 | Japan | 9 | 172 | 1169 | 1020 |
| 565 | biofuels | 5 | 171 | 191 | 346 |
| 565 | Drug design | 4 | 171 | 1444 | 1205 |
| 567 | X-ray spectroscopy | 16 | 170 | 36 | 67 |
| 567 | histological techniques | 7 | 170 | 439 | 673 |
| 569 | Aerospace Engineering | 4 | 168 | 219 | 73 |
| 570 | mutagens | 3 | 167 | 873 | 805 |
| 571 | Molecular ecology | 4 | 163 | 914 | 1093 |
| 572 | Molecular cloning | 3 | 161 | 1603 | 1117 |
| 572 | Genetic recombination | 3 | 161 | 1576 | 1106 |
| 572 | aerosol | 10 | 161 | 183 | 267 |
| 575 | Chemical processes | 4 | 160 | 551 | 329 |
| 576 | Terahertz Technology | 5 | 158 | 104 | 104 |
| 576 | disease outbreaks | 11 | 158 | 216 | 487 |
| 576 | drug evaluation | 8 | 158 | 829 | 999 |
| 579 | Telecommunication Systems | 5 | 157 | 1317 | 914 |
| 580 | wind erosion | 5 | 155 | 55 | 85 |
| 581 | Pharmacokinetics | 2 | 154 | 1131 | 714 |
| 581 | Epidemics | 9 | 154 | 246 | 491 |
| 583 | Simulation Methods | 17 | 153 | 212 | 528 |
| 584 | Biomechanics | 6 | 152 | 948 | 1033 |
| 584 | California | 2 | 152 | 476 | 250 |
| 586 | Moon | 11 | 151 | 53 | 61 |
| 587 | Solutions | 5 | 149 | 268 | 170 |
| 588 | forestry | 2 | 147 | 292 | 152 |
| 589 | Synthetic biology | 7 | 145 | 185 | 272 |
| 590 | sedimentary basins | 1 | 144 | 366 | 167 |
| 591 | Production Engineering | 11 | 140 | 1037 | 1297 |
| 591 | micromechanics | 6 | 140 | 412 | 442 |
| 593 | Paleontology | 5 | 139 | 1033 | 870 |
| 593 | Plant diseases | 7 | 139 | 1335 | 1419 |
| 593 | Breeding | 4 | 139 | 1060 | 990 |
| 596 | Risk assessment | 13 | 138 | 135 | 344 |
| 596 | probabilities | 11 | 138 | 644 | 620 |
| 596 | Developing countries | 2 | 138 | 3068 | 1715 |
| 596 | venom | 2 | 138 | 979 | 578 |
| 596 | Toxins | 2 | 138 | 1084 | 640 |
| 601 | supercritical fluids | 4 | 136 | 322 | 330 |
| 601 | Microstructure | 8 | 136 | 411 | 380 |
| 603 | Nonlinear Optics | 8 | 135 | 38 | 60 |
| 604 | Marine Geology | 1 | 134 | 1029 | 469 |
| 604 | Petroleum Geology | 1 | 134 | 867 | 454 |
| 604 | Mental Disorders | 3 | 134 | 2955 | 2513 |
| 604 | digital preservation | 2 | 134 | 101 | 43 |
| 604 | Population | 5 | 134 | 659 | 741 |
| 609 | Waste management | 12 | 133 | 634 | 972 |
| 610 | Industrial Statistics | 16 | 132 | 10 | 45 |
| 611 | Economic History | 1 | 129 | 4582 | 2037 |
| 611 | Securities | 1 | 129 | 691 | 271 |
| 611 | stocks | 1 | 129 | 341 | 138 |
| 614 | Histochemistry | 3 | 128 | 1054 | 795 |
| 615 | Documentation | 3 | 126 | 281 | 208 |
| 616 | Linguistics | 6 | 125 | 852 | 772 |
| 616 | Nervous system | 9 | 125 | 1522 | 2418 |
| 618 | water resources | 2 | 124 | 279 | 114 |
| 618 | industrial waste | 11 | 124 | 321 | 1091 |
| 620 | Carcinogenesis | 2 | 123 | 1301 | 1090 |
| 620 | Molecular recognition | 4 | 123 | 129 | 143 |
| 620 | carcinogens | 2 | 123 | 1296 | 1030 |
| 620 | research and development | 5 | 123 | 243 | 346 |
| 624 | global environmental change | 3 | 122 | 870 | 964 |
| 624 | Catalysts | 3 | 122 | 710 | 513 |
| 626 | Nanophotonics | 6 | 121 | 120 | 248 |
| 627 | Underwater acoustics | 2 | 120 | 93 | 24 |
| 627 | solar power | 4 | 120 | 765 | 951 |
| 627 | solar cells | 4 | 120 | 845 | 1030 |
| 630 | Therapeutics | 2 | 119 | 2249 | 1774 |
| 631 | Neural circuitry | 9 | 116 | 1175 | 1785 |
| 632 | Applied Sciences | 1 | 115 | 57 | 55 |
| 632 | Applied Mechanics | 1 | 115 | 57 | 55 |
| 634 | internet | 2 | 114 | 1948 | 1305 |
| 635 | Sedimentology | 3 | 113 | 619 | 558 |
| 635 | Biological Systems | 2 | 113 | 752 | 511 |
| 635 | Chemical structure | 4 | 113 | 400 | 219 |
| 638 | Eigenvalues | 20 | 112 | 40 | 32 |
| 639 | Histology | 5 | 111 | 1513 | 1827 |
| 639 | Steroids | 4 | 111 | 893 | 914 |
| 641 | Education | 13 | 110 | 1627 | 2249 |
| 641 | Geometry | 6 | 110 | 744 | 459 |
| 641 | Neutrons | 27 | 110 | 7 | 17 |
| 644 | Algae | 3 | 109 | 726 | 683 |
| 645 | Harmonic Analysis | 1 | 107 | 277 | 138 |
| 646 | Nanoelectronics | 19 | 105 | 251 | 551 |
| 646 | Agronomy | 2 | 105 | 625 | 605 |
| 646 | Hormones | 3 | 105 | 1317 | 1349 |
| 646 | Cerebral cortex | 1 | 105 | 1354 | 965 |
| 650 | Regional Planning | 2 | 103 | 1712 | 1204 |
| 651 | Seaweed | 2 | 101 | 666 | 576 |
| 652 | Geodesy | 4 | 100 | 675 | 626 |
| 653 | Entropy | 9 | 99 | 524 | 730 |
| 653 | Business communication | 3 | 99 | 163 | 123 |
| 655 | biological factors | 2 | 98 | 2425 | 1805 |
| 656 | heredity | 3 | 97 | 675 | 561 |
| 656 | drug therapy | 1 | 97 | 3717 | 2343 |
| 658 | Health Risk Assessment | 6 | 96 | 229 | 334 |
| 659 | Environmental Law | 5 | 95 | 879 | 1585 |
| 659 | Microfabrication | 3 | 95 | 412 | 323 |
| 659 | Graphene | 5 | 95 | 50 | 152 |
| 659 | Mental illness | 3 | 95 | 1990 | 2168 |
| 659 | Radiation effects | 3 | 95 | 652 | 721 |
| 664 | Psychology | 5 | 94 | 3847 | 4084 |
| 664 | Research Design | 13 | 94 | 482 | 1222 |
| 664 | standardization | 13 | 94 | 5 | 46 |
| 667 | Cognition | 3 | 93 | 1636 | 1575 |
| 668 | Neurobiology | 2 | 92 | 1999 | 2000 |
| 669 | Surface-Active Agents | 3 | 91 | 1207 | 1356 |
| 669 | Infections | 3 | 91 | 1222 | 1454 |
| 669 | Integrated Circuits | 30 | 91 | 134 | 391 |
| 669 | Human evolution | 4 | 91 | 333 | 486 |
| 673 | ecological risk assessment | 5 | 89 | 123 | 236 |
| 673 | elasticity | 7 | 89 | 109 | 175 |
| 675 | Calorimetry | 3 | 88 | 1262 | 963 |
| 675 | peptides | 5 | 88 | 612 | 658 |
| 675 | Peptide | 5 | 88 | 150 | 174 |
| 675 | Agricultural systems | 1 | 88 | 607 | 439 |
| 675 | Thermal analysis | 3 | 88 | 1262 | 963 |
| 680 | food technology | 2 | 87 | 3005 | 2598 |
| 680 | Combinatorial optimization | 5 | 87 | 333 | 224 |
| 682 | food contamination | 6 | 86 | 676 | 902 |
| 683 | Futures | 1 | 85 | 609 | 276 |
| 684 | Plant Biotechnology | 3 | 84 | 832 | 897 |
| 685 | Magnetic Resonance Imaging | 1 | 83 | 796 | 473 |
| 685 | Transportation | 6 | 83 | 1201 | 1584 |
| 685 | Plant genetic engineering | 2 | 83 | 1157 | 1133 |
| 685 | Molecular Imaging | 1 | 83 | 1102 | 841 |
| 685 | natural gas | 4 | 83 | 344 | 456 |
| 690 | Embryology | 2 | 82 | 1784 | 1814 |
| 690 | embryonic development | 2 | 82 | 528 | 468 |
| 690 | Discrete geometry | 5 | 82 | 166 | 167 |
| 690 | Hydraulic structures | 2 | 82 | 57 | 12 |
| 694 | Plant breeding | 3 | 81 | 833 | 826 |
| 694 | plasma spraying | 12 | 81 | 76 | 252 |
| 694 | eugenics | 3 | 81 | 572 | 571 |
| 697 | Psycholinguistics | 2 | 79 | 1075 | 958 |
| 697 | Intelligence | 2 | 79 | 303 | 286 |
| 697 | software | 7 | 79 | 652 | 1287 |
| 697 | Drug discovery | 2 | 79 | 385 | 313 |
| 701 | Pediatrics | 2 | 77 | 3028 | 2875 |
| 701 | Cognitive Science | 3 | 77 | 1592 | 1690 |
| 701 | applications | 6 | 77 | 13 | 9 |
| 704 | Welding | 8 | 76 | 143 | 123 |
| 704 | Bacterial diseases | 2 | 76 | 392 | 357 |
| 706 | DNA | 5 | 75 | 444 | 629 |
| 707 | Physical Therapy | 1 | 74 | 2162 | 1503 |
| 708 | Economics | 2 | 73 | 4286 | 3192 |
| 708 | Information Retrieval | 3 | 73 | 490 | 533 |
| 708 | Space telescopes | 4 | 73 | 160 | 132 |
| 708 | Computational Complexity | 7 | 73 | 581 | 749 |
| 712 | Green Technology | 3 | 72 | 364 | 397 |
| 712 | Industry | 1 | 72 | 461 | 480 |
| 714 | Archaeology | 9 | 71 | 713 | 1074 |
| 714 | Heat Exchangers | 4 | 71 | 1150 | 1555 |
| 714 | Communication | 3 | 71 | 2058 | 1997 |
| 717 | Organic Geochemistry | 3 | 70 | 395 | 556 |
| 717 | Shape Memory Alloys | 5 | 70 | 26 | 45 |
| 717 | Shape memory polymers | 5 | 70 | 26 | 45 |
| 717 | Shape Memory Effect | 5 | 70 | 26 | 45 |
| 721 | Dermatology | 2 | 69 | 2120 | 1796 |
| 721 | Bifurcation Theory | 2 | 69 | 332 | 221 |
| 721 | libraries | 7 | 69 | 295 | 413 |
| 721 | NMR | 5 | 69 | 363 | 420 |
| 721 | magnetic resonance | 5 | 69 | 377 | 443 |
| 726 | Genetic Toxicology | 2 | 68 | 629 | 758 |
| 726 | Speech Perception | 2 | 68 | 473 | 504 |
| 726 | Freshwater invertebrates | 1 | 68 | 388 | 318 |
| 726 | auditory perception | 2 | 68 | 556 | 560 |
| 726 | Synaptic Transmission | 1 | 68 | 836 | 632 |
| 726 | Oral communication | 2 | 68 | 568 | 433 |
| 726 | Speech | 2 | 68 | 1092 | 1009 |
| 733 | Food | 1 | 66 | 4508 | 3613 |
| 733 | weather | 5 | 66 | 393 | 705 |
| 735 | Origin of life | 3 | 64 | 121 | 158 |
| 736 | Graph Theory | 6 | 63 | 483 | 465 |
| 736 | Chromatography | 5 | 63 | 1368 | 1820 |
| 736 | Chromatographic analysis | 5 | 63 | 1573 | 1953 |
| 739 | Ophthalmology | 2 | 62 | 2166 | 2088 |
| 739 | Vision | 2 | 62 | 775 | 839 |
| 739 | drug addiction | 2 | 62 | 1333 | 1397 |
| 739 | alcoholism | 2 | 62 | 1752 | 1709 |
| 743 | Altitude Sickness | 1 | 61 | 302 | 141 |
| 743 | Coral reef biology | 1 | 61 | 515 | 442 |
| 743 | Altitude | 1 | 61 | 302 | 141 |
| 746 | Information visualization | 5 | 60 | 112 | 122 |
| 747 | Human biology | 2 | 58 | 816 | 666 |
| 748 | Developmental Genetics | 1 | 57 | 840 | 913 |
| 748 | Vaccination | 2 | 57 | 403 | 442 |
| 748 | natural disasters | 4 | 57 | 1148 | 1637 |
| 751 | Obstetrics | 1 | 56 | 3659 | 2684 |
| 751 | Mechatronics | 1 | 56 | 1555 | 1142 |
| 751 | Regional Economics | 1 | 56 | 804 | 501 |
| 751 | Regionalism | 1 | 56 | 432 | 233 |
| 751 | Electron Microscopy | 6 | 56 | 248 | 439 |
| 751 | China | 9 | 56 | 1784 | 3108 |
| 757 | Atmospheric Science | 5 | 54 | 137 | 248 |
| 758 | Algebra | 3 | 53 | 1333 | 917 |
| 758 | Pharmaceutical Technology | 2 | 53 | 1931 | 1982 |
| 758 | Analytical Toxicology | 1 | 53 | 411 | 307 |
| 758 | environmental exposure | 9 | 53 | 1075 | 2658 |
| 762 | Systems Engineering | 14 | 52 | 968 | 2310 |
| 762 | Bacteria | 1 | 52 | 632 | 674 |
| 764 | Pesticides | 5 | 51 | 487 | 794 |
| 765 | Endocrinology | 3 | 50 | 2964 | 3935 |
| 765 | Structural optimization | 4 | 50 | 291 | 467 |
| 765 | Liquid Crystals | 11 | 50 | 462 | 726 |
| 765 | Genetic translocation | 3 | 50 | 203 | 320 |
| 765 | plasmids | 3 | 50 | 203 | 320 |
| 770 | Dentistry | 2 | 49 | 929 | 668 |
| 771 | Developmental Biology | 2 | 48 | 2380 | 2847 |
| 771 | Water Purification | 2 | 48 | 1576 | 1454 |
| 771 | Technological Innovations | 1 | 48 | 1896 | 1416 |
| 771 | DNS | 3 | 48 | 549 | 810 |
| 775 | Sociology | 2 | 47 | 3585 | 3402 |
| 775 | Land Use Planning | 1 | 47 | 648 | 600 |
| 775 | gene therapy | 2 | 47 | 1415 | 1747 |
| 775 | Tropical Medicine | 2 | 47 | 2241 | 2143 |
| 779 | Microorganisms | 4 | 46 | 937 | 1759 |
| 779 | Aging | 2 | 46 | 3332 | 3289 |
| 781 | Geriatrics | 2 | 45 | 3619 | 3487 |
| 781 | Plant tissue culture | 3 | 45 | 740 | 1065 |
| 781 | Iron | 4 | 45 | 307 | 404 |
| 781 | Plant cell culture | 3 | 45 | 654 | 1052 |
| 785 | Mutagenesis | 1 | 44 | 928 | 655 |
| 785 | strategy | 15 | 44 | 45 | 151 |
| 785 | Soil ecology | 1 | 44 | 1295 | 1200 |
| 788 | Distance Education | 1 | 43 | 676 | 528 |
| 788 | poverty | 1 | 43 | 850 | 638 |
| 788 | healthcare disparities | 1 | 43 | 956 | 734 |
| 788 | Socioeconomic Factors | 1 | 43 | 1471 | 1230 |
| 792 | microwave antennas | 1 | 42 | 673 | 407 |
| 792 | Travel | 1 | 42 | 1519 | 1043 |
| 792 | peace | 2 | 42 | 583 | 616 |
| 792 | nucleotides | 1 | 42 | 625 | 308 |
| 796 | Electronic Packaging | 4 | 41 | 229 | 366 |
| 796 | synthesis | 4 | 41 | 948 | 1080 |
| 796 | remote sensing technology | 1 | 41 | 61 | 59 |
| 799 | Structural biology | 2 | 40 | 91 | 207 |
| 799 | Thin Films | 4 | 40 | 499 | 694 |
| 799 | Lightweight concrete | 1 | 40 | 732 | 917 |
| 799 | War and Society | 1 | 40 | 360 | 372 |
| 799 | warfare | 1 | 40 | 519 | 508 |
| 799 | Building | 3 | 40 | 562 | 642 |
| 799 | international cooperation | 1 | 40 | 1126 | 961 |
| 806 | Veterinary Immunology | 1 | 39 | 642 | 566 |
| 806 | emergency management | 3 | 39 | 706 | 1057 |
| 806 | Bipolar Disorder | 1 | 39 | 593 | 586 |
| 806 | Coding Theory | 5 | 39 | 252 | 340 |
| 806 | Roads | 4 | 39 | 660 | 787 |
| 806 | Scandinavia | 1 | 39 | 1113 | 862 |
| 812 | Optical Communications | 6 | 38 | 587 | 1004 |
| 812 | Matroids | 2 | 38 | 282 | 289 |
| 812 | prostaglandins | 1 | 38 | 757 | 736 |
| 812 | freshwater biology | 1 | 38 | 1493 | 1293 |
| 816 | Semantics | 1 | 37 | 426 | 298 |
| 816 | Sedimentary rocks | 2 | 37 | 728 | 871 |
| 816 | Europe | 4 | 37 | 2887 | 3701 |
| 819 | Paleoceanography | 1 | 36 | 293 | 377 |
| 819 | electrocatalysis | 1 | 36 | 239 | 160 |
| 821 | Food Safety | 1 | 35 | 593 | 427 |
| 821 | Functional Genomics | 1 | 35 | 535 | 657 |
| 821 | Electrophoresis | 3 | 35 | 1721 | 2398 |
| 821 | Entrepreneurship | 1 | 35 | 1508 | 1500 |
| 821 | food handling | 1 | 35 | 1577 | 1653 |
| 821 | Small Business | 1 | 35 | 1098 | 1261 |
| 827 | Social Sciences | 4 | 34 | 3056 | 3705 |
| 827 | Bioremediation | 2 | 34 | 1130 | 1542 |
| 827 | diffusion | 4 | 34 | 245 | 137 |
| 827 | Cardiovascular system | 1 | 34 | 2346 | 2624 |
| 827 | reasoning | 1 | 34 | 762 | 580 |
| 827 | Fuzzy systems | 2 | 34 | 1994 | 1838 |
| 833 | Architecture | 1 | 33 | 899 | 548 |
| 833 | Health Physics | 3 | 33 | 191 | 244 |
| 833 | Cyberterrorism | 2 | 33 | 53 | 135 |
| 833 | Mesoporous materials | 2 | 33 | 125 | 191 |
| 833 | X-rays | 4 | 33 | 565 | 827 |
| 833 | construction | 1 | 33 | 373 | 359 |
| 839 | Molecular Pharmacology | 2 | 32 | 1032 | 1509 |
| 839 | Power Electronics | 1 | 32 | 1598 | 1604 |
| 839 | Substance Abuse | 1 | 32 | 2260 | 2041 |
| 842 | Physical organic chemistry | 2 | 31 | 1692 | 1910 |
| 842 | Diabetes mellitus | 1 | 31 | 3215 | 3410 |
| 842 | Sensor Networks | 2 | 31 | 335 | 365 |
| 842 | Hydraulic machinery | 2 | 31 | 80 | 75 |
| 842 | Diabetes | 1 | 31 | 3353 | 3502 |
| 847 | Chemical Oceanography | 2 | 30 | 354 | 590 |
| 847 | Occupational exposure | 6 | 30 | 38 | 89 |
| 847 | Library Science | 2 | 30 | 1186 | 1010 |
| 847 | catalytic activity | 1 | 30 | 986 | 1031 |
| 847 | carbon monoxide | 1 | 30 | 709 | 860 |
| 847 | Genes | 3 | 30 | 1239 | 1882 |
| 853 | Global Health | 3 | 29 | 1222 | 1694 |
| 853 | health services accessibility | 3 | 29 | 1032 | 1537 |
| 853 | Neuromuscular diseases | 1 | 29 | 1028 | 1077 |
| 853 | ozone | 2 | 29 | 170 | 230 |
| 853 | Muscles | 1 | 29 | 1410 | 1545 |
| 858 | Clinical Immunology | 1 | 28 | 1812 | 1951 |
| 858 | Immunopathology | 1 | 28 | 2031 | 2184 |
| 858 | Leukemia | 1 | 28 | 1614 | 1776 |
| 861 | Intelligent Transportation Systems | 1 | 27 | 1794 | 1816 |
| 861 | Neurovirology | 2 | 27 | 323 | 536 |
| 861 | Periglacial processes | 3 | 27 | 117 | 281 |
| 861 | optical pattern recognition | 1 | 27 | 328 | 159 |
| 861 | Permafrost | 3 | 27 | 117 | 281 |
| 861 | Frozen ground | 3 | 27 | 119 | 282 |
| 861 | Semiconductor industry | 6 | 27 | 456 | 933 |
| 861 | Primates | 1 | 27 | 1142 | 1069 |
| 869 | Mathematics Education | 2 | 26 | 550 | 516 |
| 869 | International Relations | 14 | 26 | 416 | 1107 |
| 869 | Inorganic Chemistry | 1 | 26 | 101 | 141 |
| 869 | animals | 1 | 26 | 2052 | 1722 |
| 869 | Autoimmune diseases | 2 | 26 | 829 | 1323 |
| 874 | Functional Analysis | 7 | 25 | 819 | 1425 |
| 874 | Mobile genetic elements | 1 | 25 | 219 | 267 |
| 874 | Politics | 20 | 25 | 148 | 569 |
| 874 | Immunogenetics | 1 | 25 | 1175 | 1239 |
| 874 | government | 20 | 25 | 184 | 765 |
| 874 | Genetic therapy | 1 | 25 | 1907 | 2255 |
| 874 | Decision making | 3 | 25 | 1546 | 2377 |
| 881 | Plant Genetics | 1 | 24 | 1121 | 1299 |
| 881 | Discrete Mathematics | 3 | 24 | 344 | 296 |
| 881 | Infrared spectroscopy | 5 | 24 | 159 | 700 |
| 881 | graph | 3 | 24 | 344 | 296 |
| 881 | pigments | 1 | 24 | 1376 | 1453 |
| 886 | Computational Mathematics | 2 | 23 | 125 | 199 |
| 886 | Paleobiology | 1 | 23 | 617 | 483 |
| 886 | Drug delivery systems | 3 | 23 | 1706 | 2853 |
| 886 | Navier-Stokes equations | 1 | 23 | 276 | 186 |
| 886 | Nonlinear systems | 1 | 23 | 983 | 886 |
| 886 | Recycling | 1 | 23 | 1110 | 1614 |
| 892 | Serology | 1 | 22 | 954 | 1024 |
| 892 | polar regions | 2 | 22 | 799 | 1093 |
| 892 | Sites | 2 | 22 | 667 | 1102 |
| 892 | Convergence | 3 | 22 | 52 | 247 |
| 896 | Retina | 1 | 21 | 325 | 539 |
| 896 | Palynology | 1 | 21 | 487 | 438 |
| 896 | Animal Behavior | 2 | 21 | 2160 | 3117 |
| 896 | Food Preservation | 1 | 21 | 1324 | 1208 |
| 896 | Ethology | 2 | 21 | 1712 | 2610 |
| 896 | technical education | 3 | 21 | 656 | 1070 |
| 896 | Chemical industry | 2 | 21 | 1734 | 2039 |
| 896 | World Wide Web | 1 | 21 | 862 | 663 |
| 904 | big data | 2 | 20 | 854 | 1186 |
| 904 | policy making | 2 | 20 | 34 | 90 |
| 904 | security measures | 2 | 20 | 59 | 117 |
| 904 | toxicity testing | 1 | 20 | 1406 | 1646 |
| 904 | Gene library | 1 | 20 | 188 | 272 |
| 909 | Speech-Language Pathology | 1 | 19 | 584 | 632 |
| 909 | Signal Transduction | 2 | 19 | 1818 | 2704 |
| 909 | Supramolecular chemistry | 1 | 19 | 494 | 418 |
| 909 | Access to Information | 1 | 19 | 429 | 557 |
| 909 | automatic speech recognition | 1 | 19 | 355 | 420 |
| 909 | Cell surface receptors | 2 | 19 | 190 | 352 |
| 909 | Information dissemination | 1 | 19 | 429 | 557 |
| 916 | Human-Computer Interaction | 2 | 18 | 1995 | 2721 |
| 916 | disarmament | 4 | 18 | 141 | 313 |
| 916 | Drying | 1 | 18 | 696 | 795 |
| 916 | arms control | 4 | 18 | 50 | 134 |
| 916 | Electrophysiology | 3 | 18 | 1122 | 1757 |
| 916 | drugs | 1 | 18 | 3556 | 3879 |
| 922 | Neuropsychology | 2 | 17 | 2682 | 3755 |
| 922 | air quality management | 1 | 17 | 1052 | 1363 |
| 922 | International security | 2 | 17 | 258 | 517 |
| 922 | indoor air pollution | 1 | 17 | 761 | 985 |
| 922 | Ventilation | 1 | 17 | 1019 | 1165 |
| 922 | Sick building syndrome | 1 | 17 | 761 | 985 |
| 928 | Urology | 1 | 16 | 2610 | 2958 |
| 928 | Anatomy | 1 | 16 | 2854 | 3147 |
| 928 | Number Theory | 2 | 16 | 901 | 880 |
| 928 | Autoantibodies | 1 | 16 | 1000 | 1348 |
| 928 | Autoimmunity | 1 | 16 | 1231 | 1656 |
| 928 | Biofilms | 1 | 16 | 378 | 586 |
| 928 | Solitons | 4 | 16 | 1004 | 1889 |
| 928 | Fractals | 4 | 16 | 1006 | 1893 |
| 928 | Chaos | 4 | 16 | 1004 | 1889 |
| 937 | Political Science | 2 | 15 | 1952 | 2010 |
| 937 | Ergonomics | 13 | 15 | 463 | 1739 |
| 937 | Wildlife conservation | 1 | 15 | 1879 | 2295 |
| 937 | Nuclear non-proliferation | 1 | 15 | 113 | 165 |
| 937 | Environmental risk assessment | 1 | 15 | 882 | 975 |
| 937 | Africa | 1 | 15 | 2573 | 2258 |
| 937 | Middle East | 1 | 15 | 1735 | 1466 |
| 937 | Soviet Union | 1 | 15 | 1408 | 1038 |
| 945 | Logistics | 1 | 14 | 964 | 1204 |
| 945 | Environmental Education | 1 | 14 | 624 | 732 |
| 945 | Nonlinear functional analysis | 6 | 14 | 742 | 1616 |
| 945 | Accreditation | 3 | 14 | 104 | 165 |
| 945 | Microfluidics | 1 | 14 | 448 | 637 |
| 945 | Microbial Metabolism | 1 | 14 | 426 | 738 |
| 945 | energy transfer | 1 | 14 | 27 | 23 |
| 945 | Cerebellum | 1 | 14 | 567 | 755 |
| 945 | biomedicine | 1 | 14 | 1075 | 1432 |
| 945 | Extreme environments | 1 | 14 | 471 | 713 |
| 945 | Cerebellar ataxia | 1 | 14 | 566 | 755 |
| 956 | History | 1 | 13 | 1548 | 759 |
| 956 | Building Materials | 3 | 13 | 1702 | 2851 |
| 956 | Cryptography | 3 | 13 | 684 | 975 |
| 956 | Food Microbiology | 1 | 13 | 2052 | 2733 |
| 956 | Flood forecasting | 1 | 13 | 270 | 421 |
| 956 | Formal Languages | 1 | 13 | 459 | 376 |
| 956 | Flood control | 1 | 13 | 590 | 681 |
| 956 | Allergy | 1 | 13 | 1864 | 2368 |
| 964 | Neuroimaging | 1 | 12 | 543 | 645 |
| 964 | Plant Morphology | 2 | 12 | 723 | 1198 |
| 964 | Process Control | 3 | 12 | 932 | 1981 |
| 964 | Biochemical Genetics | 2 | 12 | 614 | 872 |
| 964 | Adaptive control systems | 1 | 12 | 1027 | 1148 |
| 964 | optical phenomena | 1 | 12 | 268 | 361 |
| 964 | Testing | 2 | 12 | 103 | 228 |
| 964 | carbonate rocks | 1 | 12 | 286 | 289 |
| 972 | Zoology | 8 | 11 | 1646 | 3904 |
| 972 | bioclimatology | 2 | 11 | 1181 | 2049 |
| 972 | Infertility | 1 | 11 | 1410 | 1932 |
| 972 | Hemophilia | 2 | 11 | 569 | 884 |
| 972 | Electrons | 2 | 11 | 142 | 216 |
| 972 | fertility | 1 | 11 | 1518 | 2051 |
| 972 | bees | 1 | 11 | 656 | 798 |
| 979 | Historical Linguistics | 1 | 10 | 157 | 153 |
| 979 | Agricultural Chemistry | 1 | 10 | 3462 | 4100 |
| 979 | Heterocyclic chemistry | 1 | 10 | 957 | 1030 |
| 979 | Genetic disorders | 1 | 10 | 804 | 1105 |
| 979 | Health | 1 | 10 | 3703 | 4611 |
| 979 | Metabolic diseases | 1 | 10 | 3453 | 4501 |
| 979 | Continuum Mechanics | 3 | 10 | 143 | 406 |
| 979 | scientific societies | 1 | 10 | 1362 | 1821 |
| 979 | data protection | 1 | 10 | 1144 | 1236 |
| 979 | language | 1 | 10 | 1333 | 1548 |
| 989 | Bioinstrumentation | 1 | 9 | 131 | 140 |
| 989 | Diffraction | 1 | 9 | 131 | 140 |
| 989 | Drug targeting | 2 | 9 | 443 | 1101 |
| 989 | Plasma turbulence | 1 | 9 | 131 | 140 |
| 989 | Public Choice | 1 | 9 | 590 | 735 |
| 989 | Group decision making | 1 | 9 | 801 | 1001 |
| 989 | Random graphs | 2 | 9 | 197 | 286 |
| 989 | Geospatial data | 1 | 9 | 73 | 185 |
| 989 | Isotopes | 2 | 9 | 137 | 406 |
| 998 | Emergency Medical Services | 1 | 8 | 1287 | 1709 |
| 998 | Econometrics | 1 | 8 | 2040 | 2239 |
| 998 | Avionics | 1 | 8 | 350 | 452 |