| 1 | Physics | 7,774 | 546.2K | 22 | 31 |
| 2 | Nuclear Physics | 5,488 | 182.0K | 8 | 12 |
| 3 | Condensed Matter | 3,773 | 162.6K | 6 | 9 |
| 4 | Science | 1,191 | 162.1K | 308 | 149 |
| 5 | Biology | 1,058 | 155.8K | 335 | 146 |
| 6 | Solid State Physics | 3,571 | 155.3K | 7 | 11 |
| 7 | Chemistry | 1,738 | 126.5K | 247 | 141 |
| 8 | Astrophysics | 2,077 | 121.5K | 83 | 88 |
| 9 | Materials | 1,871 | 106.5K | 71 | 50 |
| 10 | Natural history | 426 | 106.4K | 144 | 102 |
| 11 | Spectrum analysis | 1,700 | 99.3K | 46 | 50 |
| 12 | Statistical physics | 2,106 | 81.4K | 3 | 3 |
| 13 | Geophysics | 1,758 | 75.0K | 34 | 29 |
| 14 | Astronomy | 762 | 65.0K | 226 | 145 |
| 15 | Metallurgy | 939 | 54.4K | 19 | 7 |
| 16 | Metals | 788 | 48.5K | 19 | 7 |
| 17 | Materials Science | 1,457 | 44.2K | 50 | 73 |
| 18 | Planets | 868 | 42.2K | 20 | 17 |
| 19 | Crystallography | 187 | 41.3K | 33 | 10 |
| 20 | Molecular Biology | 445 | 38.9K | 624 | 349 |
| 21 | Nanotechnology | 531 | 38.8K | 209 | 143 |
| 22 | X-ray crystallography | 103 | 37.3K | 13 | 4 |
| 23 | Quantum Gravity | 872 | 35.9K | 41 | 40 |
| 24 | Nonlinear Dynamics | 854 | 33.0K | 2 | 4 |
| 25 | Biochemistry | 444 | 28.3K | 923 | 523 |
| 26 | Ecology | 235 | 27.6K | 661 | 288 |
| 27 | Electrochemistry | 947 | 27.3K | 39 | 27 |
| 28 | Fluid Mechanics | 590 | 27.1K | 6 | 5 |
| 29 | Biotechnology | 241 | 25.2K | 542 | 193 |
| 30 | Statistical Mechanics | 523 | 25.2K | 3 | 3 |
| 31 | Magnetohydrodynamics | 472 | 23.8K | 3 | 3 |
| 32 | Optics | 1,180 | 22.7K | 73 | 69 |
| 33 | Bioengineering | 207 | 22.3K | 307 | 124 |
| 34 | Polymers | 360 | 22.3K | 318 | 127 |
| 35 | Microbiology | 259 | 21.0K | 704 | 425 |
| 36 | Electronics | 241 | 19.8K | 250 | 24 |
| 37 | Virology | 173 | 19.4K | 350 | 251 |
| 38 | Medicine | 328 | 18.6K | 1051 | 755 |
| 39 | Mathematics | 463 | 16.8K | 440 | 92 |
| 40 | Nuclear Engineering | 1,114 | 16.5K | 13 | 6 |
| 41 | miniaturization | 162 | 15.7K | 107 | 70 |
| 42 | Mathematical Physics | 441 | 15.2K | 66 | 58 |
| 43 | Microelectronics | 172 | 15.0K | 96 | 63 |
| 44 | Biophysics | 489 | 14.7K | 332 | 295 |
| 45 | Statistics | 186 | 13.9K | 188 | 68 |
| 46 | Nuclear Energy | 823 | 13.9K | 10 | 3 |
| 47 | viruses | 133 | 13.2K | 138 | 74 |
| 48 | nanoscience | 188 | 13.1K | 187 | 145 |
| 49 | Meteorology | 188 | 12.8K | 213 | 143 |
| 50 | Environment | 141 | 12.7K | 643 | 406 |
| 51 | Catalysis | 243 | 12.6K | 366 | 273 |
| 52 | Cell Biology | 122 | 12.2K | 675 | 524 |
| 53 | Plastics | 152 | 12.1K | 35 | 1 |
| 54 | plasticity | 148 | 12.0K | 1 | 1 |
| 55 | Research | 209 | 11.9K | 1115 | 641 |
| 56 | Quality Control | 250 | 11.8K | 3 | 3 |
| 57 | Cytology | 122 | 11.7K | 770 | 549 |
| 58 | Microbial Ecology | 115 | 11.4K | 219 | 126 |
| 59 | Bacteriology | 62 | 11.0K | 369 | 106 |
| 60 | Experimental Design | 96 | 10.8K | 6 | 3 |
| 61 | Geology | 254 | 10.8K | 266 | 207 |
| 62 | Chemical Engineering | 153 | 10.3K | 658 | 333 |
| 63 | Climatology | 124 | 9.9K | 188 | 107 |
| 64 | Botany | 57 | 9.8K | 1155 | 363 |
| 65 | Geochemistry | 257 | 9.8K | 120 | 143 |
| 66 | Nanostructured Materials | 211 | 9.2K | 242 | 175 |
| 67 | Engineering | 226 | 8.7K | 208 | 61 |
| 68 | Technology | 186 | 8.5K | 313 | 128 |
| 69 | Nuclear Fusion | 388 | 8.1K | 27 | 26 |
| 70 | Biochemical Engineering | 51 | 7.9K | 783 | 306 |
| 71 | Immunology | 119 | 7.9K | 710 | 540 |
| 72 | Hydrology | 173 | 7.8K | 147 | 107 |
| 73 | polymerization | 152 | 7.8K | 572 | 310 |
| 74 | Pollution | 152 | 7.6K | 678 | 624 |
| 75 | Oceanography | 106 | 7.3K | 261 | 146 |
| 76 | Physical Chemistry | 165 | 7.3K | 140 | 128 |
| 77 | Ceramics | 170 | 7.2K | 73 | 49 |
| 78 | Glass | 157 | 7.2K | 59 | 47 |
| 78 | pottery | 157 | 7.2K | 58 | 46 |
| 80 | Meteorites | 144 | 7.2K | 88 | 104 |
| 81 | Photonics | 65 | 6.9K | 277 | 107 |
| 82 | Genetics | 106 | 6.8K | 610 | 540 |
| 83 | Biocompatible Materials | 131 | 6.8K | 556 | 474 |
| 84 | Solid State Chemistry | 247 | 6.8K | 70 | 64 |
| 85 | Water | 143 | 6.8K | 176 | 209 |
| 86 | Solar System | 135 | 6.8K | 77 | 60 |
| 87 | water supply | 126 | 6.7K | 45 | 46 |
| 88 | Immunity | 69 | 6.1K | 361 | 353 |
| 89 | Genomics | 266 | 6.0K | 101 | 183 |
| 90 | Forest Ecology | 14 | 6.0K | 505 | 39 |
| 91 | Forest Management | 12 | 5.9K | 528 | 42 |
| 92 | Energy Conversion | 54 | 5.9K | 174 | 143 |
| 93 | Computational Biology | 151 | 5.8K | 154 | 206 |
| 94 | Surface Chemistry | 150 | 5.6K | 467 | 366 |
| 95 | Atomic spectroscopy | 170 | 5.6K | 7 | 11 |
| 96 | Analytical Chemistry | 200 | 5.6K | 449 | 460 |
| 97 | Radiation | 257 | 5.5K | 23 | 47 |
| 98 | Nuclear Chemistry | 418 | 5.4K | 5 | 4 |
| 99 | Light | 29 | 5.4K | 228 | 87 |
| 100 | Mineralogy | 203 | 5.3K | 42 | 88 |
| 101 | Atmospheric Physics | 175 | 5.3K | 160 | 210 |
| 102 | Environmental Chemistry | 31 | 5.1K | 530 | 195 |
| 103 | Biomedical Engineering | 97 | 5.1K | 796 | 420 |
| 104 | Molecules | 192 | 5.1K | 46 | 64 |
| 105 | Environmental Health | 129 | 5.0K | 708 | 688 |
| 106 | gene mapping | 90 | 4.6K | 185 | 179 |
| 107 | Environmental Engineering | 96 | 4.5K | 504 | 428 |
| 108 | Chromosome mapping | 83 | 4.3K | 156 | 114 |
| 109 | Host-parasite interactions | 56 | 4.3K | 169 | 155 |
| 110 | Colloids | 130 | 4.3K | 539 | 524 |
| 111 | Radiochemistry | 388 | 4.3K | 6 | 6 |
| 112 | Liver diseases | 31 | 4.3K | 502 | 258 |
| 113 | nucleic acids | 50 | 4.1K | 413 | 347 |
| 114 | Superconductors | 134 | 4.0K | 22 | 11 |
| 115 | Fluid Dynamics | 91 | 4.0K | 89 | 39 |
| 116 | proteins | 61 | 3.9K | 362 | 163 |
| 117 | Membranes | 48 | 3.9K | 377 | 196 |
| 118 | Optical materials | 108 | 3.8K | 303 | 343 |
| 119 | explosives | 181 | 3.7K | 3 | 1 |
| 120 | Medical Physics | 61 | 3.7K | 341 | 157 |
| 121 | protein | 46 | 3.6K | 203 | 101 |
| 122 | radiative transfer | 130 | 3.5K | 13 | 31 |
| 123 | Nanostructures | 43 | 3.4K | 388 | 223 |
| 124 | Plant cells | 28 | 3.4K | 431 | 336 |
| 125 | optical instruments | 68 | 3.4K | 29 | 26 |
| 126 | Plant physiology | 29 | 3.4K | 760 | 334 |
| 127 | Superconductivity | 89 | 3.4K | 25 | 11 |
| 128 | Greenhouse gases | 73 | 3.3K | 9 | 9 |
| 129 | Smart Materials | 38 | 3.2K | 111 | 31 |
| 130 | Numerical Analysis | 116 | 3.2K | 150 | 104 |
| 131 | Human genetics | 24 | 3.2K | 1034 | 1113 |
| 132 | Artificial Intelligence | 57 | 3.1K | 844 | 374 |
| 133 | Molecular Spectroscopy | 104 | 3.0K | 78 | 51 |
| 134 | sanitation | 51 | 3.0K | 332 | 356 |
| 135 | Cosmology | 161 | 3.0K | 35 | 74 |
| 136 | Virulence | 47 | 3.0K | 199 | 200 |
| 137 | Earth Sciences | 89 | 2.9K | 522 | 497 |
| 138 | Renewable Energy Sources | 23 | 2.9K | 875 | 442 |
| 139 | biological evolution | 28 | 2.9K | 739 | 453 |
| 140 | Marine Meteorology | 37 | 2.9K | 92 | 48 |
| 141 | Quantum theory | 136 | 2.9K | 9 | 17 |
| 142 | atmospheric models | 71 | 2.8K | 85 | 101 |
| 143 | Bioinformatics | 66 | 2.7K | 281 | 324 |
| 144 | Climate change | 29 | 2.6K | 295 | 370 |
| 144 | Biodiversity conservation | 29 | 2.6K | 564 | 474 |
| 144 | Eutrophication | 29 | 2.6K | 289 | 368 |
| 147 | energy conservation | 25 | 2.6K | 522 | 215 |
| 148 | Combustion | 108 | 2.6K | 115 | 138 |
| 149 | Sun | 57 | 2.6K | 87 | 64 |
| 150 | Nondestructive testing | 49 | 2.6K | 50 | 8 |
| 151 | Atmospheric Chemistry | 44 | 2.6K | 275 | 254 |
| 152 | mass transfer | 51 | 2.5K | 272 | 169 |
| 153 | plant communities | 25 | 2.5K | 342 | 158 |
| 154 | Particle Physics | 87 | 2.5K | 18 | 11 |
| 155 | Geochemical Modeling | 46 | 2.5K | 26 | 25 |
| 155 | geological modeling | 46 | 2.5K | 29 | 25 |
| 157 | United States | 77 | 2.4K | 955 | 748 |
| 158 | Hydrodynamics | 51 | 2.4K | 44 | 27 |
| 159 | Semiconductors | 58 | 2.4K | 337 | 100 |
| 160 | Hydraulic Engineering | 56 | 2.3K | 167 | 96 |
| 161 | Carbon | 91 | 2.3K | 78 | 201 |
| 162 | Evolution | 27 | 2.3K | 655 | 436 |
| 163 | Natural resources | 48 | 2.3K | 68 | 52 |
| 164 | Materials Engineering | 62 | 2.2K | 13 | 2 |
| 165 | energy development | 13 | 2.2K | 280 | 116 |
| 166 | space environment | 75 | 2.2K | 9 | 6 |
| 167 | genome | 36 | 2.2K | 372 | 398 |
| 168 | Mechanical Engineering | 53 | 2.1K | 534 | 172 |
| 169 | Energy Policy | 23 | 2.0K | 1000 | 499 |
| 170 | Nanoparticles | 34 | 2.0K | 451 | 247 |
| 171 | Organometallic compounds | 48 | 2.0K | 192 | 123 |
| 172 | Quantum Optics | 84 | 1.9K | 32 | 47 |
| 172 | Molecular structure | 46 | 1.9K | 508 | 418 |
| 174 | cryosphere | 58 | 1.9K | 33 | 54 |
| 175 | Electrochemical Analysis | 33 | 1.9K | 368 | 151 |
| 176 | Electrical Engineering | 678 | 1.9K | 41 | 211 |
| 177 | clay | 21 | 1.9K | 155 | 48 |
| 178 | Medical Laboratory Science | 48 | 1.9K | 361 | 309 |
| 179 | Geomagnetism | 84 | 1.9K | 59 | 66 |
| 180 | fuel cells | 40 | 1.9K | 263 | 274 |
| 181 | Molecular evolution | 28 | 1.9K | 424 | 299 |
| 182 | Groundwater | 58 | 1.8K | 55 | 39 |
| 183 | Chromosomes | 19 | 1.8K | 332 | 121 |
| 184 | Laser Spectroscopy | 74 | 1.8K | 31 | 43 |
| 185 | clay minerals | 18 | 1.8K | 58 | 18 |
| 186 | Multiphase Flow | 23 | 1.8K | 61 | 26 |
| 187 | Structural design | 23 | 1.8K | 166 | 45 |
| 188 | particle beams | 82 | 1.7K | 8 | 9 |
| 189 | vibration | 53 | 1.7K | 156 | 125 |
| 190 | fusion reactors | 184 | 1.7K | 31 | 34 |
| 191 | cell physiology | 38 | 1.7K | 380 | 423 |
| 192 | Environmental Microbiology | 27 | 1.7K | 354 | 286 |
| 192 | Seismology | 93 | 1.7K | 42 | 65 |
| 194 | Radioisotopes | 142 | 1.7K | 25 | 43 |
| 195 | actuators | 28 | 1.6K | 721 | 407 |
| 195 | transducers | 28 | 1.6K | 721 | 407 |
| 197 | Biodiversity | 21 | 1.6K | 923 | 473 |
| 198 | Cosmochemistry | 48 | 1.6K | 86 | 111 |
| 199 | Engineering Mathematics | 90 | 1.6K | 216 | 204 |
| 200 | Elementary particles | 20 | 1.6K | 25 | 16 |
| 201 | Physiology | 45 | 1.6K | 1372 | 1205 |
| 202 | Plants | 9 | 1.6K | 1518 | 567 |
| 203 | Laser-plasma interactions | 88 | 1.6K | 2 | 2 |
| 203 | Plasma density | 88 | 1.6K | 2 | 2 |
| 205 | Industrial Safety | 43 | 1.6K | 131 | 86 |
| 206 | Geography | 36 | 1.6K | 677 | 410 |
| 207 | Immune system | 9 | 1.6K | 714 | 470 |
| 208 | Planetary Science | 48 | 1.5K | 74 | 53 |
| 209 | nuclear magnetic resonance | 67 | 1.5K | 147 | 180 |
| 210 | Photography | 552 | 1.5K | 44 | 79 |
| 211 | Dynamics | 85 | 1.5K | 113 | 120 |
| 212 | Bacterial infections | 12 | 1.5K | 368 | 201 |
| 213 | enzymes | 17 | 1.5K | 638 | 233 |
| 214 | Hydrogeology | 52 | 1.5K | 45 | 30 |
| 215 | biocatalysis | 6 | 1.5K | 107 | 71 |
| 215 | Homogeneous catalysis | 6 | 1.5K | 107 | 71 |
| 215 | Heterogeneous catalysis | 6 | 1.5K | 107 | 71 |
| 218 | mycoses | 11 | 1.4K | 399 | 190 |
| 219 | Intelligent Control Systems | 16 | 1.4K | 320 | 24 |
| 220 | Magnetic Resonance Spectroscopy | 69 | 1.4K | 151 | 197 |
| 221 | Green Chemistry | 31 | 1.4K | 509 | 479 |
| 222 | System analysis | 34 | 1.4K | 670 | 339 |
| 222 | environmental pollution | 64 | 1.4K | 1000 | 1427 |
| 224 | Structural dynamics | 42 | 1.4K | 186 | 202 |
| 225 | Composite Materials | 50 | 1.4K | 666 | 805 |
| 226 | Fracture mechanics | 40 | 1.3K | 327 | 207 |
| 227 | plant molecular biology | 6 | 1.3K | 1285 | 593 |
| 227 | Information Science | 17 | 1.3K | 1112 | 459 |
| 229 | Computational Fluid Dynamics | 60 | 1.3K | 17 | 32 |
| 230 | mathematical analysis | 59 | 1.3K | 619 | 341 |
| 231 | Structural health monitoring | 24 | 1.3K | 11 | 8 |
| 231 | structural stability | 24 | 1.3K | 85 | 33 |
| 233 | Organic Chemistry | 36 | 1.3K | 1211 | 945 |
| 234 | Metallography | 52 | 1.2K | 52 | 43 |
| 235 | Plant Ecology | 13 | 1.2K | 964 | 492 |
| 236 | Freezing | 49 | 1.2K | 30 | 10 |
| 237 | Quantum Chemistry | 63 | 1.2K | 44 | 61 |
| 238 | Computer-Aided Design | 35 | 1.2K | 197 | 154 |
| 239 | Radiobiology | 48 | 1.2K | 417 | 430 |
| 240 | Biogeochemistry | 30 | 1.1K | 351 | 416 |
| 241 | Ocean Engineering | 11 | 1.1K | 1025 | 349 |
| 242 | particle accelerators | 69 | 1.1K | 10 | 15 |
| 243 | Toxicology | 45 | 1.1K | 1494 | 1658 |
| 244 | Environmental Policy | 38 | 1.1K | 846 | 1063 |
| 245 | Mass Spectrometry | 30 | 1.1K | 348 | 265 |
| 246 | Soil Science | 21 | 1.1K | 742 | 500 |
| 247 | coal | 19 | 1.1K | 619 | 420 |
| 248 | Cancer | 11 | 1.1K | 2627 | 1555 |
| 249 | Thermodynamics | 52 | 1.0K | 117 | 86 |
| 250 | Luminescence | 29 | 1.0K | 252 | 91 |
| 251 | Biomass Energy | 17 | 1.0K | 1191 | 878 |
| 252 | Energy Storage | 34 | 1.0K | 259 | 261 |
| 253 | Rock Mechanics | 36 | 1.0K | 202 | 211 |
| 254 | nuclear astrophysics | 34 | 1.0K | 66 | 110 |
| 255 | Organometallic chemistry | 33 | 1.0K | 474 | 233 |
| 256 | Rheology | 18 | 1.0K | 187 | 102 |
| 257 | nuclear power | 95 | 1.0K | 29 | 32 |
| 258 | Computational Chemistry | 17 | 991 | 203 | 172 |
| 259 | Earthquakes | 51 | 973 | 39 | 43 |
| 260 | Mental Health Services | 40 | 965 | 245 | 204 |
| 261 | Volcanoes | 21 | 962 | 73 | 49 |
| 262 | drug development | 12 | 959 | 496 | 441 |
| 263 | Thermochemistry | 37 | 958 | 78 | 63 |
| 264 | Microscopy | 90 | 952 | 110 | 240 |
| 265 | Differential Equations | 6 | 951 | 806 | 124 |
| 266 | industrial hygiene | 109 | 943 | 36 | 75 |
| 267 | Turbulence | 31 | 942 | 18 | 12 |
| 268 | Genetic engineering | 20 | 939 | 899 | 724 |
| 269 | Combinatorial analysis | 28 | 935 | 324 | 99 |
| 270 | Environmental monitoring | 48 | 933 | 924 | 1474 |
| 271 | Medical innovations | 10 | 929 | 577 | 523 |
| 272 | Bioinorganic chemistry | 32 | 925 | 390 | 310 |
| 273 | Geomorphology | 16 | 921 | 623 | 417 |
| 274 | impact | 50 | 913 | 23 | 63 |
| 275 | Plasma devices | 18 | 905 | 97 | 81 |
| 276 | Information Theory | 37 | 887 | 204 | 214 |
| 277 | Soil Mechanics | 26 | 885 | 404 | 341 |
| 278 | Water pollution | 41 | 872 | 728 | 1051 |
| 279 | Agriculture | 24 | 868 | 816 | 593 |
| 280 | Environmental Management | 9 | 865 | 2057 | 1071 |
| 281 | Geothermal Energy | 35 | 853 | 16 | 18 |
| 282 | Porous materials | 29 | 834 | 75 | 47 |
| 283 | Heterocyclic compounds | 33 | 820 | 191 | 51 |
| 284 | Metallic Glasses | 18 | 811 | 118 | 74 |
| 285 | Bioorganic chemistry | 13 | 809 | 1740 | 1073 |
| 286 | management | 13 | 799 | 1974 | 1245 |
| 287 | Biogeochemical cycles | 13 | 789 | 207 | 264 |
| 288 | occupational health and safety | 90 | 777 | 12 | 18 |
| 289 | Stochastic Processes | 33 | 770 | 123 | 73 |
| 290 | soil microbiology | 20 | 769 | 580 | 656 |
| 291 | Proteome | 14 | 765 | 595 | 457 |
| 292 | Medical genetics | 9 | 762 | 2215 | 1658 |
| 293 | pollutants | 37 | 753 | 370 | 617 |
| 293 | Environmental pollutants | 37 | 753 | 489 | 731 |
| 295 | Visual Perception | 65 | 745 | 307 | 615 |
| 296 | Energy Harvesting | 18 | 744 | 134 | 213 |
| 297 | Industrial Microbiology | 11 | 740 | 1147 | 738 |
| 298 | Biogeography | 9 | 732 | 648 | 467 |
| 299 | Chemical analysis | 11 | 722 | 669 | 244 |
| 300 | Cytogenetics | 16 | 721 | 765 | 840 |
| 300 | Mechanics | 29 | 721 | 325 | 237 |
| 302 | Neurology | 19 | 714 | 3014 | 2802 |
| 303 | Memory | 63 | 711 | 373 | 751 |
| 303 | Attention | 63 | 711 | 328 | 656 |
| 303 | Perception | 63 | 711 | 385 | 745 |
| 306 | Agricultural Ecology | 16 | 708 | 439 | 456 |
| 307 | Structural Engineering | 11 | 704 | 1100 | 486 |
| 308 | Data Mining | 26 | 696 | 354 | 464 |
| 308 | Biometrics | 32 | 696 | 294 | 321 |
| 310 | Computer Graphics | 45 | 693 | 303 | 469 |
| 310 | Oncogenes | 8 | 693 | 907 | 766 |
| 312 | Radiology | 46 | 691 | 295 | 326 |
| 313 | Geodynamics | 18 | 677 | 390 | 359 |
| 314 | infection | 13 | 675 | 941 | 694 |
| 314 | Organelle biogenesis | 13 | 675 | 44 | 23 |
| 316 | Industrial Engineering | 26 | 670 | 574 | 549 |
| 317 | Diagnostic Imaging | 27 | 665 | 671 | 703 |
| 318 | Measurement | 27 | 656 | 262 | 213 |
| 319 | Surgery | 4 | 652 | 2424 | 1256 |
| 320 | Mining Engineering | 15 | 648 | 203 | 128 |
| 321 | Synchrotron Radiation | 25 | 647 | 86 | 69 |
| 322 | Quantum Computing | 12 | 644 | 54 | 19 |
| 323 | Soil biology | 12 | 643 | 501 | 470 |
| 324 | Soft Condensed Matter | 32 | 635 | 291 | 376 |
| 325 | ecosystem | 12 | 626 | 722 | 610 |
| 326 | environmental protection | 17 | 624 | 1738 | 1431 |
| 327 | Sustainable Engineering | 29 | 620 | 425 | 639 |
| 328 | Crystal growth | 20 | 611 | 329 | 270 |
| 329 | Shock Waves | 29 | 605 | 23 | 17 |
| 330 | Plasma chemistry | 9 | 603 | 204 | 66 |
| 331 | Computer Science | 14 | 590 | 1059 | 371 |
| 332 | Proteomics | 7 | 589 | 869 | 439 |
| 333 | Transplantation | 9 | 584 | 903 | 660 |
| 334 | Public Policy | 5 | 578 | 1653 | 559 |
| 335 | Ultrasonics | 39 | 575 | 117 | 346 |
| 336 | Systems Biology | 30 | 573 | 373 | 406 |
| 337 | Quantum Communication | 12 | 572 | 54 | 43 |
| 338 | Petroleum Engineering | 27 | 569 | 201 | 196 |
| 338 | Ultrasound | 38 | 569 | 56 | 132 |
| 340 | Radiation Protection | 62 | 566 | 31 | 51 |
| 340 | radiation monitoring | 62 | 566 | 25 | 43 |
| 342 | Engineering Geology | 25 | 562 | 465 | 542 |
| 342 | Magnetic Materials | 31 | 562 | 391 | 524 |
| 344 | Antibodies | 14 | 558 | 281 | 218 |
| 344 | Antigens | 14 | 558 | 434 | 327 |
| 346 | air | 17 | 554 | 50 | 81 |
| 346 | Climate | 17 | 554 | 145 | 170 |
| 348 | Systems Analysis | 4 | 552 | 1122 | 204 |
| 349 | Analytical Biochemistry | 31 | 550 | 384 | 646 |
| 349 | United Kingdom | 7 | 550 | 1289 | 791 |
| 351 | Civil Engineering | 8 | 545 | 1468 | 305 |
| 352 | Radiation dosimetry | 59 | 538 | 18 | 27 |
| 353 | Pharmaceutical Chemistry | 11 | 537 | 2769 | 2118 |
| 354 | Informatics | 14 | 535 | 338 | 226 |
| 355 | Flow cytometry | 24 | 530 | 39 | 71 |
| 356 | Pharmacology | 21 | 527 | 2885 | 2975 |
| 357 | Aerosols | 19 | 526 | 197 | 191 |
| 358 | biopolymers | 24 | 522 | 384 | 480 |
| 359 | Quantum Mechanics | 3 | 521 | 216 | 14 |
| 360 | Finite Element Method | 4 | 515 | 273 | 23 |
| 361 | Automation | 15 | 507 | 918 | 709 |
| 362 | Molecular Genetics | 16 | 505 | 940 | 1043 |
| 363 | Photochemistry | 12 | 503 | 1013 | 679 |
| 364 | Quality Management | 86 | 500 | 2 | 10 |
| 364 | Ion Exchange | 19 | 500 | 26 | 29 |
| 364 | Solvent extraction | 19 | 500 | 26 | 29 |
| 367 | Diagnostic microbiology | 7 | 498 | 1102 | 981 |
| 368 | Solar Energy | 26 | 497 | 422 | 753 |
| 369 | Epidemiology | 14 | 494 | 2344 | 1867 |
| 370 | Marine Biology | 13 | 492 | 1588 | 1271 |
| 370 | health planning | 26 | 492 | 632 | 611 |
| 372 | Clinical Chemistry | 8 | 484 | 2417 | 1646 |
| 373 | Immunotherapy | 6 | 482 | 1694 | 1119 |
| 374 | Earthquake Engineering | 15 | 478 | 646 | 525 |
| 374 | Petrology | 8 | 478 | 694 | 526 |
| 376 | soil management | 2 | 469 | 801 | 200 |
| 376 | tillage | 2 | 469 | 588 | 159 |
| 378 | Hematology | 10 | 468 | 2571 | 1816 |
| 379 | data collection | 16 | 463 | 343 | 412 |
| 380 | Alloys | 47 | 452 | 15 | 24 |
| 381 | energy resources | 9 | 449 | 857 | 918 |
| 382 | Carbohydrates | 4 | 445 | 441 | 177 |
| 383 | lasers | 28 | 436 | 528 | 490 |
| 384 | Algorithms | 10 | 435 | 350 | 141 |
| 385 | Ultrasonic Imaging | 31 | 434 | 50 | 119 |
| 386 | optical devices | 11 | 430 | 177 | 68 |
| 387 | Cybernetics | 23 | 424 | 400 | 514 |
| 388 | Combinatorial chemistry | 7 | 421 | 612 | 433 |
| 389 | Antiviral agents | 16 | 419 | 84 | 102 |
| 390 | Mental Disorders | 19 | 414 | 1523 | 1880 |
| 391 | Protein engineering | 13 | 412 | 66 | 96 |
| 391 | molecular design | 13 | 412 | 81 | 93 |
| 393 | atmosphere | 15 | 405 | 305 | 294 |
| 394 | Psychiatry | 12 | 402 | 2935 | 2656 |
| 395 | glycoproteins | 2 | 396 | 732 | 214 |
| 395 | Glycoconjugates | 2 | 396 | 732 | 214 |
| 395 | Oligosaccharide | 2 | 396 | 472 | 156 |
| 395 | glycolipids | 2 | 396 | 732 | 214 |
| 399 | phase diagrams | 45 | 394 | 23 | 38 |
| 400 | Birds | 7 | 387 | 983 | 410 |
| 401 | Remote Sensing | 10 | 380 | 875 | 352 |
| 401 | Vaccines | 8 | 380 | 1419 | 1003 |
| 403 | mutation | 7 | 377 | 420 | 348 |
| 404 | Crystallization | 24 | 375 | 93 | 127 |
| 405 | exobiology | 8 | 374 | 186 | 181 |
| 406 | Genetic algorithms | 3 | 373 | 211 | 88 |
| 406 | Evolutionary Computation | 3 | 373 | 407 | 138 |
| 408 | Mental Health | 7 | 372 | 1246 | 601 |
| 409 | Bioenergetics | 11 | 371 | 456 | 453 |
| 409 | Energy metabolism | 11 | 371 | 367 | 383 |
| 411 | Radio wave propagation | 20 | 366 | 225 | 171 |
| 412 | Culture techniques | 16 | 365 | 83 | 87 |
| 413 | Radiopharmaceuticals | 47 | 352 | 21 | 32 |
| 414 | public works | 2 | 350 | 300 | 31 |
| 415 | Hydrometeorology | 6 | 346 | 161 | 168 |
| 416 | Mental illness | 14 | 343 | 1135 | 1446 |
| 417 | Medical Oncology | 11 | 342 | 1305 | 1264 |
| 418 | Brain | 8 | 335 | 2052 | 1783 |
| 419 | Kinetics | 16 | 331 | 126 | 123 |
| 420 | extraterrestrial environment | 19 | 326 | 163 | 161 |
| 421 | Ceramic materials | 11 | 325 | 745 | 558 |
| 422 | astronomical phenomena | 18 | 323 | 163 | 149 |
| 423 | Public Health | 17 | 322 | 3293 | 3654 |
| 424 | Ecohydrology | 8 | 317 | 150 | 74 |
| 424 | Ferroelectricity | 27 | 317 | 209 | 235 |
| 424 | Aquatic ecology | 8 | 317 | 651 | 423 |
| 427 | Diffraction | 7 | 314 | 54 | 10 |
| 428 | Powder Metallurgy | 7 | 309 | 229 | 22 |
| 428 | Mycology | 10 | 309 | 1072 | 972 |
| 430 | Nuclear Medicine | 15 | 305 | 537 | 599 |
| 431 | Environmental Geology | 8 | 296 | 1173 | 911 |
| 432 | Manufacturing Processes | 21 | 295 | 977 | 1286 |
| 433 | Wireless Communication Systems | 7 | 291 | 1648 | 811 |
| 433 | Cell differentiation | 10 | 291 | 1198 | 1549 |
| 435 | Systems Theory | 27 | 286 | 45 | 80 |
| 436 | Signal Processing | 11 | 283 | 1191 | 879 |
| 437 | Climate Change Mitigation | 3 | 279 | 38 | 48 |
| 437 | Image Processing | 12 | 279 | 1159 | 1172 |
| 437 | Global warming | 3 | 279 | 126 | 50 |
| 437 | sea level | 3 | 279 | 38 | 48 |
| 441 | Computer Vision | 6 | 278 | 944 | 811 |
| 442 | Immunochemistry | 16 | 273 | 382 | 479 |
| 443 | analysis | 7 | 270 | 262 | 235 |
| 443 | Plasma polymerization | 2 | 270 | 397 | 106 |
| 445 | Information Systems | 17 | 269 | 472 | 721 |
| 446 | Educational Psychology | 14 | 268 | 689 | 776 |
| 447 | Minerals | 14 | 265 | 239 | 295 |
| 448 | Fire ecology | 9 | 261 | 24 | 19 |
| 449 | Bibliometrics | 4 | 260 | 110 | 59 |
| 450 | Sound | 31 | 258 | 107 | 191 |
| 451 | Biomolecules | 3 | 256 | 529 | 311 |
| 451 | computer networks | 15 | 256 | 1223 | 1317 |
| 451 | Structure-activity relationship | 3 | 256 | 479 | 179 |
| 454 | Ornithology | 5 | 252 | 938 | 444 |
| 455 | Chemical kinetics | 15 | 251 | 241 | 160 |
| 456 | Nanobiotechnology | 2 | 248 | 651 | 243 |
| 456 | biofuels | 6 | 248 | 179 | 244 |
| 456 | Cellulose | 6 | 248 | 414 | 316 |
| 459 | Approximation Theory | 6 | 247 | 326 | 129 |
| 460 | Environmental Toxicology | 6 | 246 | 2170 | 1967 |
| 461 | Respiratory Infections | 1 | 245 | 821 | 128 |
| 461 | Influenza | 1 | 245 | 678 | 84 |
| 463 | DNA repair | 5 | 244 | 247 | 186 |
| 464 | Population Genetics | 8 | 239 | 880 | 975 |
| 465 | Water quality management | 9 | 238 | 1204 | 955 |
| 466 | Heat Exchangers | 5 | 237 | 1073 | 836 |
| 467 | Hazardous waste | 20 | 235 | 189 | 786 |
| 468 | Ore deposits | 1 | 232 | 935 | 307 |
| 469 | nuclear magnetic resonance spectroscopy | 8 | 230 | 546 | 387 |
| 470 | Mobile Computing | 4 | 227 | 1181 | 431 |
| 471 | Molecular Microbiology | 5 | 226 | 792 | 884 |
| 471 | Zeolites | 11 | 226 | 434 | 666 |
| 471 | particles | 7 | 226 | 666 | 443 |
| 474 | Plate Tectonics | 5 | 223 | 200 | 108 |
| 474 | Cell cycle | 6 | 223 | 199 | 131 |
| 474 | cell proliferation | 6 | 223 | 234 | 142 |
| 477 | Geobiology | 11 | 221 | 212 | 250 |
| 478 | Biosensors | 6 | 220 | 1044 | 1276 |
| 478 | Developmental Psychology | 2 | 220 | 1409 | 751 |
| 478 | Control Theory | 9 | 220 | 1210 | 907 |
| 478 | Bioelectronics | 6 | 220 | 878 | 1178 |
| 478 | human development | 2 | 220 | 1041 | 511 |
| 478 | DNA polymerases | 6 | 220 | 338 | 675 |
| 484 | Pharmacy | 2 | 219 | 3208 | 1494 |
| 485 | Paleoclimatology | 9 | 215 | 742 | 859 |
| 485 | mammals | 11 | 215 | 550 | 582 |
| 487 | cell membrane | 8 | 214 | 423 | 497 |
| 488 | Risk Management | 10 | 212 | 333 | 378 |
| 489 | Imaging systems | 3 | 211 | 1029 | 230 |
| 490 | Oncology | 1 | 206 | 4421 | 2508 |
| 491 | Neurochemistry | 9 | 205 | 1773 | 2024 |
| 492 | Tribology | 5 | 204 | 1133 | 687 |
| 493 | Surface properties | 7 | 202 | 819 | 988 |
| 494 | Operations Research | 14 | 201 | 1252 | 1472 |
| 495 | Comparative Physiology | 3 | 200 | 964 | 551 |
| 495 | concrete | 8 | 200 | 688 | 884 |
| 497 | cosmic rays | 20 | 199 | 135 | 243 |
| 497 | cell movement | 3 | 199 | 279 | 199 |
| 499 | Probability | 8 | 195 | 390 | 399 |
| 499 | Financial management | 8 | 195 | 281 | 407 |
| 499 | Risk | 9 | 195 | 324 | 404 |
| 502 | Reproduction | 7 | 194 | 1995 | 1778 |
| 503 | Landscape Ecology | 2 | 193 | 699 | 357 |
| 504 | Wind power | 7 | 192 | 168 | 133 |
| 504 | Granular materials | 5 | 192 | 441 | 302 |
| 504 | Japan | 19 | 192 | 858 | 1057 |
| 507 | Metabolism | 5 | 191 | 2871 | 2750 |
| 508 | Paleoecology | 7 | 190 | 808 | 821 |
| 508 | Paleogeography | 7 | 190 | 702 | 759 |
| 510 | radioactive waste | 19 | 188 | 144 | 852 |
| 511 | Medical Technology | 8 | 187 | 1247 | 1238 |
| 511 | Medical Microbiology | 9 | 187 | 1753 | 2358 |
| 513 | Geographic information systems | 10 | 185 | 565 | 457 |
| 514 | ground penetrating radar | 1 | 183 | 179 | 4 |
| 515 | investigative techniques | 3 | 179 | 124 | 84 |
| 516 | visualization | 20 | 178 | 564 | 468 |
| 517 | Cytoskeleton | 1 | 177 | 570 | 204 |
| 517 | Phylogeny | 3 | 177 | 1092 | 844 |
| 519 | Moon | 13 | 175 | 56 | 64 |
| 520 | Oxidation | 6 | 174 | 103 | 100 |
| 521 | Evolutionary Genetics | 9 | 168 | 279 | 422 |
| 521 | Molecular Epidemiology | 9 | 168 | 279 | 422 |
| 521 | Recombinant DNA | 4 | 168 | 1688 | 1237 |
| 524 | Machine Learning | 8 | 166 | 186 | 259 |
| 524 | Raman spectroscopy | 16 | 166 | 234 | 546 |
| 526 | Neurophysiology | 4 | 165 | 3074 | 2787 |
| 526 | Cement | 7 | 165 | 426 | 685 |
| 528 | Drug design | 5 | 164 | 1649 | 1441 |
| 529 | brain mapping | 5 | 162 | 629 | 691 |
| 529 | gastrointestinal tract | 1 | 162 | 745 | 256 |
| 531 | Electromagnetism | 10 | 161 | 399 | 355 |
| 532 | Agricultural Science | 4 | 158 | 188 | 285 |
| 533 | Aerospace Engineering | 4 | 157 | 389 | 121 |
| 534 | Multivariate Analysis | 3 | 156 | 573 | 312 |
| 534 | Entomology | 4 | 156 | 2585 | 1505 |
| 536 | Respiration | 4 | 155 | 1654 | 1418 |
| 537 | Nonlinear mechanics | 7 | 154 | 240 | 234 |
| 538 | Nonlinear Optics | 11 | 153 | 76 | 101 |
| 539 | Substance Abuse | 3 | 151 | 1742 | 1098 |
| 539 | Social behavior | 4 | 151 | 1153 | 1001 |
| 539 | mathematical concepts | 7 | 151 | 210 | 148 |
| 542 | Biological Systems | 13 | 150 | 202 | 445 |
| 542 | Molecular cloning | 3 | 150 | 1851 | 1226 |
| 542 | Genetic recombination | 3 | 150 | 1825 | 1216 |
| 545 | biological monitoring | 6 | 149 | 338 | 386 |
| 546 | Occupational Health | 17 | 148 | 413 | 701 |
| 546 | X-ray spectroscopy | 14 | 148 | 50 | 85 |
| 548 | Social Networks | 4 | 147 | 248 | 217 |
| 549 | Structuralism | 3 | 146 | 154 | 171 |
| 550 | Nanochemistry | 9 | 145 | 725 | 688 |
| 550 | Computer Architecture | 7 | 145 | 296 | 222 |
| 552 | Psychophysiology | 3 | 144 | 3408 | 2768 |
| 553 | Pathology | 3 | 142 | 3046 | 2459 |
| 554 | Biomechanics | 6 | 140 | 1225 | 1222 |
| 554 | aerosol | 10 | 140 | 224 | 312 |
| 556 | Telecommunication Systems | 6 | 139 | 1370 | 1049 |
| 556 | histological techniques | 6 | 139 | 570 | 824 |
| 556 | wind erosion | 5 | 139 | 51 | 92 |
| 559 | Anthropology | 8 | 138 | 1186 | 1009 |
| 560 | Community Psychiatry | 9 | 137 | 589 | 936 |
| 560 | sedimentary basins | 1 | 137 | 421 | 180 |
| 562 | Robotics | 10 | 136 | 1063 | 1310 |
| 563 | Psychopharmacology | 2 | 135 | 2368 | 1725 |
| 563 | Molecular ecology | 4 | 135 | 1138 | 1338 |
| 563 | Chemical processes | 4 | 135 | 626 | 390 |
| 563 | Microstructure | 8 | 135 | 516 | 442 |
| 563 | Radio | 9 | 135 | 497 | 451 |
| 563 | California | 2 | 135 | 615 | 287 |
| 563 | Radio frequency | 7 | 135 | 193 | 199 |
| 570 | Pharmacokinetics | 2 | 134 | 1510 | 831 |
| 571 | mutagens | 3 | 133 | 1020 | 1019 |
| 572 | Solutions | 5 | 132 | 299 | 201 |
| 572 | Psychiatric hospitals | 8 | 132 | 197 | 243 |
| 574 | Agronomy | 5 | 131 | 493 | 654 |
| 574 | digital preservation | 2 | 131 | 138 | 48 |
| 576 | probabilities | 11 | 129 | 819 | 763 |
| 576 | venom | 4 | 129 | 850 | 673 |
| 576 | Toxins | 4 | 129 | 959 | 749 |
| 579 | micromechanics | 6 | 128 | 467 | 519 |
| 580 | Simulation Methods | 17 | 126 | 232 | 652 |
| 581 | Psychology | 7 | 125 | 4368 | 4408 |
| 581 | Paleontology | 5 | 125 | 1236 | 1015 |
| 581 | Marine Geology | 1 | 125 | 1113 | 500 |
| 581 | Petroleum Geology | 1 | 125 | 954 | 491 |
| 581 | forestry | 2 | 125 | 359 | 176 |
| 586 | Waste management | 12 | 124 | 703 | 1035 |
| 586 | Computational Complexity | 18 | 124 | 284 | 533 |
| 586 | supercritical fluids | 4 | 124 | 369 | 372 |
| 589 | Risk assessment | 13 | 123 | 145 | 347 |
| 589 | drug evaluation | 8 | 123 | 909 | 1170 |
| 591 | Industrial Statistics | 15 | 122 | 18 | 53 |
| 591 | disease outbreaks | 10 | 122 | 280 | 609 |
| 593 | Nervous system | 9 | 121 | 1819 | 2852 |
| 593 | Epidemics | 8 | 121 | 317 | 611 |
| 593 | Developing countries | 2 | 121 | 3854 | 2010 |
| 596 | Fungi | 5 | 120 | 980 | 1134 |
| 597 | Economic History | 1 | 119 | 6411 | 2321 |
| 597 | Securities | 1 | 119 | 744 | 265 |
| 597 | Plant diseases | 7 | 119 | 1601 | 1627 |
| 597 | stocks | 1 | 119 | 346 | 121 |
| 601 | Linguistics | 6 | 117 | 1265 | 883 |
| 601 | Population | 5 | 117 | 934 | 862 |
| 603 | water resources | 2 | 116 | 520 | 247 |
| 604 | Catalysts | 3 | 115 | 824 | 564 |
| 605 | solar power | 4 | 114 | 828 | 1029 |
| 605 | Parasitic Diseases | 6 | 114 | 1925 | 2167 |
| 605 | industrial waste | 11 | 114 | 341 | 1182 |
| 605 | solar cells | 4 | 114 | 942 | 1127 |
| 609 | Microfabrication | 5 | 112 | 314 | 295 |
| 609 | Underwater acoustics | 2 | 112 | 106 | 28 |
| 609 | Molecular recognition | 4 | 112 | 161 | 161 |
| 612 | Synthetic biology | 7 | 110 | 208 | 286 |
| 612 | Documentation | 3 | 110 | 398 | 252 |
| 614 | Bifurcation Theory | 4 | 109 | 652 | 407 |
| 615 | Steroids | 4 | 107 | 1072 | 1044 |
| 615 | Breeding | 4 | 107 | 1276 | 1205 |
| 617 | natural gas | 4 | 106 | 397 | 375 |
| 618 | Information Technology | 3 | 105 | 3218 | 1867 |
| 618 | Geometry | 6 | 105 | 1091 | 650 |
| 618 | Neutrons | 27 | 105 | 9 | 20 |
| 621 | Chemical structure | 4 | 102 | 478 | 225 |
| 621 | Microwaves | 5 | 102 | 1050 | 643 |
| 621 | Eigenvalues | 20 | 102 | 46 | 46 |
| 624 | Harmonic Analysis | 1 | 101 | 314 | 152 |
| 624 | Hormones | 3 | 101 | 1637 | 1568 |
| 626 | Education | 12 | 100 | 2462 | 2700 |
| 626 | Parasitology | 5 | 100 | 2403 | 2335 |
| 628 | Histochemistry | 3 | 99 | 1369 | 1047 |
| 628 | Nanophotonics | 5 | 99 | 229 | 346 |
| 628 | Carcinogenesis | 2 | 99 | 1547 | 1360 |
| 628 | carcinogens | 2 | 99 | 1535 | 1285 |
| 628 | Cerebral cortex | 1 | 99 | 1624 | 1141 |
| 633 | Sedimentology | 3 | 96 | 717 | 665 |
| 633 | Neural circuitry | 12 | 96 | 1076 | 2171 |
| 635 | internet | 2 | 95 | 1826 | 958 |
| 636 | Algae | 3 | 94 | 868 | 817 |
| 636 | disease vectors | 4 | 94 | 1017 | 1048 |
| 636 | Parasites | 4 | 94 | 1788 | 1588 |
| 639 | Production Engineering | 10 | 93 | 1268 | 1637 |
| 639 | Regional Planning | 2 | 93 | 2226 | 1362 |
| 641 | Applied Sciences | 1 | 91 | 54 | 66 |
| 641 | Applied Mechanics | 1 | 91 | 54 | 66 |
| 643 | Software Engineering | 2 | 90 | 1535 | 804 |
| 643 | biological factors | 2 | 90 | 2873 | 2094 |
| 645 | Histology | 4 | 89 | 2063 | 2263 |
| 645 | Research Design | 13 | 89 | 574 | 1381 |
| 645 | standardization | 13 | 89 | 10 | 54 |
| 648 | Seaweed | 2 | 88 | 803 | 711 |
| 648 | heredity | 2 | 88 | 1051 | 668 |
| 650 | Business communication | 3 | 87 | 176 | 127 |
| 651 | Nanoelectronics | 18 | 86 | 291 | 669 |
| 651 | Integrated Circuits | 32 | 86 | 90 | 308 |
| 651 | Marine Pollution | 3 | 86 | 1451 | 1560 |
| 654 | Health Risk Assessment | 6 | 85 | 256 | 362 |
| 655 | Surface-Active Agents | 3 | 84 | 1339 | 1576 |
| 655 | global environmental change | 3 | 84 | 1050 | 1205 |
| 655 | peptides | 5 | 84 | 817 | 824 |
| 655 | Peptide | 5 | 84 | 177 | 199 |
| 659 | Neurobiology | 2 | 83 | 2539 | 2442 |
| 659 | Calorimetry | 3 | 83 | 1504 | 1029 |
| 659 | Thermal analysis | 3 | 83 | 1504 | 1029 |
| 662 | Social welfare | 2 | 81 | 828 | 468 |
| 662 | monoclonal antibodies | 5 | 81 | 137 | 173 |
| 662 | Agricultural systems | 1 | 81 | 687 | 476 |
| 662 | Cognition | 3 | 81 | 1960 | 1854 |
| 666 | Embryology | 2 | 79 | 2206 | 2161 |
| 666 | Combinatorial optimization | 5 | 79 | 396 | 262 |
| 666 | ecological risk assessment | 5 | 79 | 143 | 255 |
| 666 | embryonic development | 2 | 79 | 644 | 555 |
| 666 | Discrete geometry | 5 | 79 | 211 | 184 |
| 666 | Futures | 1 | 79 | 665 | 305 |
| 672 | Geodesy | 4 | 78 | 782 | 775 |
| 672 | Child psychology | 1 | 78 | 2847 | 1909 |
| 672 | Social work | 4 | 78 | 1476 | 1129 |
| 675 | Hydraulic structures | 2 | 77 | 124 | 34 |
| 675 | Entropy | 9 | 77 | 560 | 878 |
| 677 | food technology | 3 | 76 | 3100 | 3085 |
| 677 | elasticity | 7 | 76 | 140 | 216 |
| 677 | Radiation effects | 4 | 76 | 609 | 846 |
| 680 | Magnetic Resonance Imaging | 1 | 74 | 1175 | 624 |
| 680 | Molecular Imaging | 1 | 74 | 1354 | 973 |
| 680 | food contamination | 6 | 74 | 815 | 1065 |
| 683 | Transportation | 6 | 73 | 1369 | 1746 |
| 683 | plasma spraying | 12 | 73 | 85 | 275 |
| 685 | Psycholinguistics | 2 | 72 | 1301 | 1125 |
| 685 | Infections | 3 | 72 | 1571 | 1884 |
| 685 | Intelligence | 2 | 72 | 336 | 319 |
| 685 | Welding | 8 | 72 | 176 | 118 |
| 689 | Economics | 3 | 70 | 4933 | 3619 |
| 689 | Therapeutics | 2 | 70 | 2775 | 2632 |
| 689 | Post-traumatic stress disorder | 1 | 70 | 1516 | 959 |
| 692 | Physical Therapy | 1 | 69 | 2699 | 1786 |
| 692 | Pediatrics | 2 | 69 | 4059 | 3638 |
| 692 | Graphene | 5 | 69 | 57 | 181 |
| 695 | libraries | 9 | 67 | 402 | 472 |
| 696 | Plant Biotechnology | 3 | 66 | 966 | 1058 |
| 696 | Green Technology | 3 | 66 | 487 | 418 |
| 696 | Drug discovery | 2 | 66 | 425 | 362 |
| 699 | Environmental Law | 5 | 65 | 1019 | 1989 |
| 699 | Plant genetic engineering | 2 | 65 | 1369 | 1356 |
| 699 | DNA | 5 | 65 | 506 | 689 |
| 702 | Origin of life | 3 | 64 | 152 | 181 |
| 702 | Freshwater invertebrates | 1 | 64 | 433 | 344 |
| 702 | drug therapy | 1 | 64 | 4523 | 3251 |
| 705 | Organic Geochemistry | 3 | 63 | 462 | 646 |
| 705 | Human evolution | 3 | 63 | 488 | 628 |
| 705 | Social Systems | 11 | 63 | 23 | 110 |
| 708 | Shape Memory Alloys | 5 | 62 | 32 | 50 |
| 708 | Shape memory polymers | 5 | 62 | 32 | 50 |
| 708 | Shape Memory Effect | 5 | 62 | 32 | 50 |
| 711 | Information Retrieval | 3 | 61 | 558 | 638 |
| 711 | NMR | 5 | 61 | 492 | 541 |
| 711 | magnetic resonance | 5 | 61 | 502 | 564 |
| 714 | Genetic Toxicology | 2 | 60 | 719 | 884 |
| 714 | Glaciology | 3 | 60 | 245 | 267 |
| 714 | glaciers | 3 | 60 | 227 | 263 |
| 717 | Communication | 3 | 59 | 2480 | 2081 |
| 718 | Graph Theory | 5 | 58 | 685 | 563 |
| 718 | Plant breeding | 3 | 58 | 1009 | 1078 |
| 718 | eugenics | 3 | 58 | 730 | 776 |
| 718 | applications | 6 | 58 | 17 | 6 |
| 722 | Chromatography | 5 | 57 | 1570 | 2103 |
| 722 | Food | 1 | 57 | 5712 | 4334 |
| 722 | weather | 5 | 57 | 470 | 814 |
| 722 | Chromatographic analysis | 5 | 57 | 1835 | 2284 |
| 726 | Archaeology | 9 | 56 | 908 | 1379 |
| 726 | Speech Perception | 2 | 56 | 337 | 353 |
| 726 | auditory perception | 2 | 56 | 450 | 445 |
| 726 | Oral communication | 2 | 56 | 588 | 490 |
| 726 | Speech | 2 | 56 | 1225 | 1162 |
| 726 | Bacterial diseases | 2 | 56 | 450 | 397 |
| 732 | Information visualization | 5 | 55 | 117 | 113 |
| 732 | Human biology | 2 | 55 | 971 | 774 |
| 734 | Atmospheric Science | 5 | 54 | 162 | 270 |
| 734 | Developmental Genetics | 1 | 54 | 1046 | 1110 |
| 734 | Altitude Sickness | 1 | 54 | 359 | 172 |
| 734 | Liquid Crystals | 12 | 54 | 504 | 795 |
| 734 | Vaccination | 2 | 54 | 485 | 495 |
| 734 | Altitude | 1 | 54 | 359 | 172 |
| 740 | Regional Economics | 1 | 53 | 937 | 533 |
| 740 | Regionalism | 1 | 53 | 507 | 247 |
| 740 | drug addiction | 3 | 53 | 1364 | 1718 |
| 740 | alcoholism | 3 | 53 | 1794 | 2099 |
| 744 | Obstetrics | 1 | 52 | 4694 | 3305 |
| 744 | Hallucinogens | 1 | 52 | 411 | 286 |
| 744 | behavior therapy | 2 | 52 | 1176 | 1160 |
| 744 | drug abuse | 1 | 52 | 1386 | 844 |
| 748 | Synaptic Transmission | 1 | 51 | 1033 | 839 |
| 748 | Electron Microscopy | 7 | 51 | 254 | 522 |
| 750 | Social Psychology | 3 | 49 | 2454 | 2851 |
| 751 | Algebra | 3 | 48 | 1736 | 1154 |
| 752 | Water Purification | 2 | 47 | 1694 | 1510 |
| 753 | Analytical Toxicology | 1 | 46 | 513 | 364 |
| 753 | Microorganisms | 5 | 46 | 1106 | 2143 |
| 755 | Systems Engineering | 16 | 44 | 956 | 2477 |
| 755 | Structural optimization | 4 | 44 | 334 | 519 |
| 755 | Space telescopes | 4 | 44 | 211 | 235 |
| 755 | DNS | 3 | 44 | 614 | 880 |
| 759 | Pharmaceutical Technology | 2 | 43 | 2233 | 2349 |
| 759 | Developmental Biology | 2 | 43 | 2975 | 3353 |
| 759 | Pesticides | 5 | 43 | 566 | 968 |
| 759 | Industry | 1 | 43 | 528 | 633 |
| 759 | freshwater biology | 2 | 43 | 1392 | 1401 |
| 764 | environmental exposure | 9 | 42 | 1238 | 3246 |
| 765 | Sociology | 2 | 41 | 4633 | 4030 |
| 765 | Health Education | 1 | 41 | 4019 | 2802 |
| 765 | microwave antennas | 1 | 41 | 870 | 522 |
| 765 | peace | 2 | 41 | 690 | 679 |
| 765 | Tropical Medicine | 2 | 41 | 2945 | 2693 |
| 765 | Aging | 2 | 41 | 4334 | 4057 |
| 771 | Geriatrics | 2 | 40 | 4633 | 4145 |
| 771 | Land Use Planning | 1 | 40 | 750 | 653 |
| 771 | Plant tissue culture | 3 | 40 | 881 | 1214 |
| 771 | Plant cell culture | 3 | 40 | 780 | 1196 |
| 775 | Travel | 1 | 39 | 2037 | 1224 |
| 775 | War and Society | 1 | 39 | 437 | 417 |
| 775 | warfare | 1 | 39 | 627 | 556 |
| 775 | Building | 3 | 39 | 960 | 967 |
| 775 | Nonlinear systems | 2 | 39 | 901 | 844 |
| 775 | international cooperation | 1 | 39 | 1305 | 1034 |
| 781 | Veterinary Immunology | 1 | 38 | 752 | 622 |
| 781 | Thin Films | 4 | 38 | 587 | 790 |
| 781 | Matroids | 2 | 38 | 331 | 316 |
| 781 | China | 9 | 38 | 2059 | 4127 |
| 781 | remote sensing technology | 1 | 38 | 94 | 81 |
| 786 | polar regions | 3 | 37 | 835 | 1026 |
| 786 | nucleotides | 1 | 37 | 746 | 367 |
| 786 | strategy | 17 | 37 | 60 | 178 |
| 786 | Europe | 4 | 37 | 3704 | 4309 |
| 790 | Structural biology | 2 | 36 | 106 | 248 |
| 790 | Bacteria | 1 | 36 | 815 | 923 |
| 792 | Endocrinology | 2 | 35 | 4477 | 5097 |
| 792 | Distance Education | 1 | 35 | 1075 | 677 |
| 792 | Lightweight concrete | 1 | 35 | 809 | 1004 |
| 792 | Roads | 4 | 35 | 745 | 864 |
| 792 | Scandinavia | 1 | 35 | 1501 | 1177 |
| 792 | prostaglandins | 1 | 35 | 945 | 847 |
| 792 | Soil ecology | 1 | 35 | 1453 | 1436 |
| 799 | Semantics | 1 | 34 | 535 | 322 |
| 799 | Functional Genomics | 1 | 34 | 668 | 770 |
| 799 | Mutagenesis | 1 | 34 | 1092 | 790 |
| 799 | Technological Innovations | 1 | 34 | 2156 | 1637 |
| 799 | Archaea | 1 | 34 | 93 | 127 |
| 804 | Electrophoresis | 3 | 32 | 2068 | 2876 |
| 804 | Microprocessors | 2 | 32 | 858 | 806 |
| 804 | Drug delivery systems | 4 | 32 | 1613 | 2824 |
| 804 | Entrepreneurship | 1 | 32 | 1938 | 1701 |
| 804 | Small Business | 1 | 32 | 1372 | 1472 |
| 804 | reasoning | 1 | 32 | 864 | 639 |
| 804 | Fuzzy systems | 2 | 32 | 2525 | 2189 |
| 804 | natural disasters | 3 | 32 | 1635 | 2305 |
| 812 | Architecture | 1 | 31 | 1394 | 652 |
| 812 | Food Safety | 1 | 31 | 682 | 414 |
| 812 | Diabetes mellitus | 1 | 31 | 4063 | 4037 |
| 812 | diffusion | 4 | 31 | 332 | 182 |
| 812 | Hydraulic machinery | 2 | 31 | 195 | 169 |
| 812 | food handling | 1 | 31 | 1825 | 1880 |
| 812 | construction | 1 | 31 | 420 | 408 |
| 812 | Sedimentary rocks | 2 | 31 | 852 | 1016 |
| 812 | electrocatalysis | 1 | 31 | 287 | 187 |
| 812 | Diabetes | 1 | 31 | 4147 | 4070 |
| 822 | emergency management | 3 | 30 | 1045 | 1553 |
| 822 | Bipolar Disorder | 1 | 30 | 734 | 748 |
| 822 | X-rays | 4 | 30 | 696 | 1012 |
| 822 | Iron | 5 | 30 | 370 | 636 |
| 822 | synthesis | 4 | 30 | 1141 | 1363 |
| 827 | Molecular Pharmacology | 2 | 29 | 1192 | 1751 |
| 827 | dual diagnosis | 2 | 29 | 151 | 133 |
| 827 | gene therapy | 2 | 29 | 1758 | 2362 |
| 827 | Mesoporous materials | 2 | 29 | 142 | 214 |
| 827 | Library Science | 3 | 29 | 1525 | 1215 |
| 832 | Community Psychology | 3 | 28 | 619 | 1017 |
| 832 | Optical Communications | 3 | 28 | 758 | 910 |
| 832 | Health Physics | 3 | 28 | 259 | 310 |
| 832 | Occupational exposure | 6 | 28 | 63 | 103 |
| 832 | Sensor Networks | 2 | 28 | 363 | 389 |
| 832 | Paleoceanography | 1 | 28 | 386 | 508 |
| 838 | Physical organic chemistry | 2 | 27 | 1928 | 2214 |
| 838 | Multimedia Systems | 6 | 27 | 1413 | 2329 |
| 838 | Cyberterrorism | 2 | 27 | 51 | 146 |
| 838 | ozone | 2 | 27 | 196 | 247 |
| 842 | catalytic activity | 1 | 26 | 1138 | 1212 |
| 842 | Primates | 1 | 26 | 1414 | 1242 |
| 842 | Genes | 3 | 26 | 1419 | 2126 |
| 845 | poverty | 1 | 25 | 989 | 877 |
| 845 | healthcare disparities | 1 | 25 | 1135 | 975 |
| 845 | Socioeconomic Factors | 1 | 25 | 1715 | 1622 |
| 845 | animals | 1 | 25 | 2559 | 1960 |
| 845 | cell interaction | 2 | 25 | 1771 | 2419 |
| 850 | Functional Analysis | 7 | 24 | 1026 | 1708 |
| 850 | Neuromuscular diseases | 1 | 24 | 1353 | 1443 |
| 850 | Semiconductor industry | 6 | 24 | 504 | 1090 |
| 850 | Muscles | 1 | 24 | 1760 | 1918 |
| 854 | Social Sciences | 4 | 23 | 4205 | 4810 |
| 854 | Mathematics Education | 2 | 23 | 667 | 596 |
| 854 | Clinical Psychology | 2 | 23 | 2109 | 2869 |
| 854 | Acoustics | 2 | 23 | 408 | 201 |
| 854 | Computational Mathematics | 2 | 23 | 163 | 243 |
| 854 | Immunogenetics | 1 | 23 | 1523 | 1550 |
| 854 | Genetic therapy | 1 | 23 | 2455 | 2695 |
| 861 | Chemical Oceanography | 2 | 22 | 434 | 759 |
| 861 | Infrared spectroscopy | 5 | 22 | 211 | 841 |
| 861 | Autoimmune diseases | 2 | 22 | 1013 | 1604 |
| 864 | International Relations | 16 | 21 | 522 | 1327 |
| 864 | Inorganic Chemistry | 1 | 21 | 351 | 407 |
| 864 | Neurovirology | 2 | 21 | 377 | 653 |
| 864 | Paleobiology | 1 | 21 | 740 | 550 |
| 864 | Electronic Packaging | 3 | 21 | 203 | 328 |
| 864 | Periglacial processes | 3 | 21 | 148 | 347 |
| 864 | Permafrost | 3 | 21 | 148 | 347 |
| 864 | Frozen ground | 3 | 21 | 150 | 348 |
| 864 | pigments | 1 | 21 | 1577 | 1685 |
| 873 | Plant Genetics | 1 | 20 | 1332 | 1552 |
| 873 | Public Health Informatics | 21 | 20 | 9 | 84 |
| 873 | Palynology | 1 | 20 | 579 | 496 |
| 873 | Discrete Mathematics | 3 | 20 | 394 | 349 |
| 873 | Mobile genetic elements | 1 | 20 | 248 | 287 |
| 873 | Genetic translocation | 2 | 20 | 295 | 494 |
| 873 | graph | 3 | 20 | 394 | 349 |
| 873 | plasmids | 2 | 20 | 295 | 494 |
| 873 | Decision making | 3 | 20 | 1895 | 2895 |
| 873 | World Wide Web | 1 | 20 | 1022 | 692 |
| 873 | Recycling | 1 | 20 | 1258 | 1830 |
| 884 | Speech-Language Pathology | 1 | 19 | 623 | 635 |
| 884 | Computer Engineering | 4 | 19 | 808 | 1605 |
| 884 | Radiography | 3 | 19 | 779 | 1352 |
| 884 | Supramolecular chemistry | 1 | 19 | 564 | 461 |
| 884 | Leukemia | 1 | 19 | 2209 | 2208 |
| 884 | policy making | 2 | 19 | 39 | 107 |
| 884 | automatic speech recognition | 1 | 19 | 363 | 425 |
| 884 | security measures | 2 | 19 | 60 | 132 |
| 884 | toxicity testing | 1 | 19 | 1615 | 1827 |
| 884 | Chemical industry | 2 | 19 | 2031 | 2405 |
| 884 | software | 3 | 19 | 1164 | 2193 |
| 895 | Serology | 1 | 18 | 1179 | 1196 |
| 895 | Clinical Immunology | 1 | 18 | 2544 | 2725 |
| 895 | Food Preservation | 1 | 18 | 1608 | 1408 |
| 895 | Immunopathology | 1 | 18 | 2615 | 2937 |
| 895 | Inflammation | 1 | 18 | 2547 | 2932 |
| 895 | cell adhesion molecules | 1 | 18 | 1129 | 1450 |
| 895 | cytokines | 1 | 18 | 2603 | 2966 |
| 895 | Gene library | 1 | 18 | 219 | 333 |
| 895 | Nuclear Facilities | 2 | 18 | 108 | 97 |
| 895 | Sites | 2 | 18 | 785 | 1399 |
| 895 | Detectors | 1 | 18 | 2081 | 1542 |
| 895 | carbon monoxide | 1 | 18 | 765 | 997 |
| 895 | Cell communication | 1 | 18 | 1687 | 1981 |
| 908 | Cultural Studies | 1 | 17 | 377 | 346 |
| 908 | Neuropsychology | 2 | 17 | 3317 | 4431 |
| 908 | Animal Behavior | 2 | 17 | 2642 | 3825 |
| 908 | Religion | 1 | 17 | 2046 | 969 |
| 908 | Politics | 16 | 17 | 212 | 769 |
| 908 | Ethology | 2 | 17 | 2084 | 3163 |
| 908 | Religion and Culture | 1 | 17 | 712 | 550 |
| 908 | Religion and Psychology | 1 | 17 | 1200 | 1003 |
| 908 | government | 16 | 17 | 250 | 988 |
| 908 | Culture | 1 | 17 | 2124 | 1563 |
| 918 | Number Theory | 2 | 16 | 1219 | 1074 |
| 919 | air quality management | 1 | 15 | 1247 | 1588 |
| 919 | Drying | 1 | 15 | 814 | 932 |
| 919 | Electrophysiology | 3 | 15 | 1434 | 2234 |
| 919 | indoor air pollution | 1 | 15 | 900 | 1154 |
| 919 | Ventilation | 1 | 15 | 1191 | 1363 |
| 919 | Sick building syndrome | 1 | 15 | 900 | 1154 |
| 919 | drugs | 1 | 15 | 4357 | 4692 |
| 926 | Global Health | 3 | 14 | 1434 | 2413 |
| 926 | Quantum electronics | 4 | 14 | 1159 | 1716 |
| 926 | health services accessibility | 3 | 14 | 1163 | 2017 |
| 926 | Nonlinear functional analysis | 6 | 14 | 956 | 1960 |
| 926 | Decision Support Systems | 1 | 14 | 709 | 754 |
| 926 | Autoantibodies | 1 | 14 | 1223 | 1601 |
| 926 | Autoimmunity | 1 | 14 | 1501 | 1975 |
| 926 | Environmental risk assessment | 1 | 14 | 999 | 1090 |
| 926 | Africa | 1 | 14 | 3374 | 2841 |
| 926 | Middle East | 1 | 14 | 2084 | 1622 |
| 926 | biomedicine | 1 | 14 | 2032 | 2402 |
| 937 | Political Science | 2 | 13 | 2603 | 2463 |
| 937 | Ergonomics | 13 | 13 | 517 | 2058 |
| 937 | Cryptography | 3 | 13 | 770 | 1080 |
| 937 | Accreditation | 3 | 13 | 116 | 189 |
| 937 | Coding Theory | 3 | 13 | 399 | 589 |
| 937 | Cardiovascular system | 1 | 13 | 2914 | 3532 |
| 937 | Flood forecasting | 1 | 13 | 278 | 421 |
| 937 | Solitons | 3 | 13 | 1328 | 2230 |
| 937 | International security | 2 | 13 | 314 | 620 |
| 937 | Formal Languages | 1 | 13 | 553 | 420 |
| 937 | Fractals | 3 | 13 | 1529 | 2399 |
| 937 | Microbial Metabolism | 1 | 13 | 508 | 829 |
| 937 | Chaos | 3 | 13 | 1328 | 2230 |
| 937 | Flood control | 1 | 13 | 687 | 731 |
| 937 | Soviet Union | 1 | 13 | 1637 | 1198 |
| 952 | Adolescent Psychology | 1 | 12 | 1718 | 1917 |
| 952 | Adolescent | 1 | 12 | 4416 | 4476 |
| 954 | Logistics | 1 | 11 | 1129 | 1348 |
| 954 | Biochemical Genetics | 2 | 11 | 731 | 965 |
| 954 | Nuclear non-proliferation | 1 | 11 | 129 | 201 |
| 954 | bioclimatology | 2 | 11 | 1438 | 2283 |
| 954 | Infertility | 1 | 11 | 1979 | 2383 |
| 954 | Hemophilia | 2 | 11 | 753 | 1114 |
| 954 | Convergence | 2 | 11 | 67 | 274 |
| 954 | Extreme environments | 1 | 11 | 540 | 856 |
| 954 | fertility | 1 | 11 | 2080 | 2510 |
| 963 | Environmental Education | 1 | 10 | 826 | 928 |
| 963 | Wildlife conservation | 1 | 10 | 2216 | 2882 |
| 963 | Cognitive Science | 2 | 10 | 2256 | 3432 |
| 963 | Genetic disorders | 1 | 10 | 1061 | 1423 |
| 963 | Health | 1 | 10 | 4833 | 5564 |
| 963 | Metabolic diseases | 1 | 10 | 4463 | 5361 |
| 963 | Radio waves | 1 | 10 | 681 | 623 |
| 963 | scientific societies | 1 | 10 | 1759 | 2201 |
| 963 | carbonate rocks | 1 | 10 | 333 | 329 |
| 972 | Anatomy | 1 | 9 | 3692 | 4207 |
| 972 | Historical Linguistics | 1 | 9 | 202 | 182 |
| 972 | Heterocyclic chemistry | 1 | 9 | 1206 | 1201 |
| 972 | behavioral medicine | 1 | 9 | 2750 | 3712 |
| 972 | Adaptive control systems | 1 | 9 | 1228 | 1390 |
| 972 | Asymmetric synthesis | 1 | 9 | 350 | 389 |
| 972 | Continuum Mechanics | 3 | 9 | 164 | 443 |
| 972 | energy transfer | 1 | 9 | 30 | 32 |
| 972 | Cerebellum | 1 | 9 | 672 | 906 |
| 972 | Isotopes | 2 | 9 | 180 | 463 |
| 972 | language | 1 | 9 | 1486 | 1644 |
| 972 | Cerebellar ataxia | 1 | 9 | 672 | 906 |
| 984 | Applied Mathematics | 2 | 8 | 1564 | 1669 |
| 984 | Neuroimaging | 1 | 8 | 643 | 821 |
| 984 | Process Control | 2 | 8 | 1251 | 2320 |
| 984 | Bioremediation | 2 | 8 | 1333 | 2562 |
| 984 | Cognitive neuroscience | 1 | 8 | 1693 | 2185 |
| 984 | Microfluidics | 1 | 8 | 527 | 806 |
| 984 | Developmental Immunology | 1 | 8 | 1637 | 2272 |
| 984 | Interfaces | 5 | 8 | 203 | 992 |
| 984 | Electrons | 2 | 8 | 159 | 298 |
| 984 | Learning | 1 | 8 | 2592 | 3034 |
| 984 | optical phenomena | 1 | 8 | 313 | 445 |
| 984 | Cognitive Learning | 1 | 8 | 279 | 374 |
| 984 | Allergy | 1 | 8 | 2298 | 2943 |
| 984 | data protection | 1 | 8 | 1254 | 1436 |
| 998 | Ophthalmology | 1 | 7 | 3268 | 4064 |
| 998 | Sustainable Development | 1 | 7 | 4281 | 4990 |
| 998 | Food Microbiology | 1 | 7 | 2500 | 3464 |
