| 1 | Physics | 3,363 | 147.9K | 92 | 228 |
| 2 | Chemistry | 1,094 | 89.7K | 399 | 266 |
| 3 | Solid State Physics | 1,439 | 85.7K | 63 | 40 |
| 4 | Condensed Matter | 1,320 | 82.1K | 68 | 42 |
| 5 | Materials | 1,237 | 77.3K | 125 | 98 |
| 6 | Materials Science | 2,096 | 54.2K | 18 | 62 |
| 7 | Combustion | 838 | 52.3K | 3 | 1 |
| 8 | Nanotechnology | 594 | 41.6K | 174 | 158 |
| 9 | Science | 318 | 34.4K | 1052 | 829 |
| 10 | Biology | 259 | 33.3K | 1234 | 825 |
| 11 | Biotechnology | 327 | 28.6K | 359 | 203 |
| 12 | Optics | 1,170 | 28.2K | 54 | 51 |
| 13 | Metallurgy | 423 | 24.0K | 62 | 45 |
| 14 | Metals | 375 | 22.1K | 58 | 47 |
| 15 | Bioengineering | 214 | 21.7K | 278 | 179 |
| 16 | Molecular Biology | 213 | 21.5K | 1181 | 695 |
| 17 | Natural history | 100 | 21.4K | 613 | 674 |
| 18 | Statistical physics | 471 | 20.4K | 169 | 92 |
| 19 | miniaturization | 193 | 20.1K | 71 | 55 |
| 20 | Electronics | 524 | 19.5K | 81 | 36 |
| 21 | Microelectronics | 248 | 18.9K | 57 | 47 |
| 22 | Electrochemistry | 976 | 18.1K | 33 | 83 |
| 23 | Glass | 263 | 16.7K | 24 | 13 |
| 24 | Ceramics | 263 | 16.6K | 37 | 12 |
| 25 | pottery | 260 | 16.6K | 24 | 12 |
| 26 | Mathematics | 207 | 15.6K | 855 | 129 |
| 27 | Polymers | 386 | 15.2K | 287 | 229 |
| 28 | Nuclear Physics | 478 | 14.1K | 475 | 521 |
| 29 | Catalysis | 256 | 13.6K | 322 | 278 |
| 30 | Nanostructured Materials | 244 | 12.4K | 176 | 147 |
| 31 | Geophysics | 287 | 11.7K | 377 | 366 |
| 32 | Computational Chemistry | 30 | 11.1K | 72 | 31 |
| 33 | Surface Chemistry | 284 | 10.8K | 190 | 190 |
| 34 | Physical Chemistry | 155 | 10.7K | 131 | 81 |
| 35 | nanoscience | 143 | 10.4K | 256 | 212 |
| 36 | Solar Energy | 227 | 10.3K | 12 | 15 |
| 37 | Photonics | 119 | 10.1K | 118 | 81 |
| 38 | Nonlinear Dynamics | 187 | 9.7K | 151 | 73 |
| 39 | Colloids | 253 | 9.6K | 236 | 235 |
| 40 | polymerization | 254 | 9.3K | 340 | 278 |
| 41 | Nuclear Fusion | 320 | 9.2K | 33 | 26 |
| 42 | Chemical Engineering | 144 | 8.8K | 654 | 437 |
| 43 | Industrial Safety | 118 | 8.7K | 21 | 4 |
| 44 | Analytical Chemistry | 143 | 8.5K | 610 | 336 |
| 45 | Biocompatible Materials | 175 | 8.4K | 403 | 447 |
| 46 | Fluid Mechanics | 238 | 7.6K | 44 | 41 |
| 47 | Engineering Mathematics | 207 | 7.5K | 65 | 25 |
| 48 | Electrical Engineering | 1,418 | 7.3K | 6 | 26 |
| 49 | impact | 124 | 6.7K | 3 | 4 |
| 50 | Energy Conversion | 67 | 6.5K | 124 | 151 |
| 51 | Biomass Energy | 81 | 6.5K | 265 | 174 |
| 52 | Statistics | 84 | 6.0K | 436 | 196 |
| 53 | Numerical Analysis | 124 | 6.0K | 132 | 44 |
| 54 | Geochemistry | 130 | 5.9K | 262 | 255 |
| 55 | Optical materials | 69 | 5.9K | 454 | 249 |
| 56 | Nuclear Engineering | 434 | 5.5K | 39 | 39 |
| 57 | Renewable Energy Sources | 71 | 5.4K | 266 | 291 |
| 58 | energy conservation | 39 | 5.3K | 327 | 109 |
| 59 | Spectrum analysis | 194 | 5.3K | 550 | 813 |
| 60 | Technology | 137 | 5.2K | 403 | 295 |
| 61 | Biomedical Engineering | 101 | 5.1K | 760 | 484 |
| 62 | Environmental Chemistry | 30 | 5.1K | 540 | 227 |
| 63 | Green Chemistry | 71 | 5.1K | 196 | 138 |
| 64 | Microbiology | 102 | 5.0K | 1480 | 1448 |
| 65 | Fracture mechanics | 120 | 4.9K | 79 | 46 |
| 66 | Solid State Chemistry | 171 | 4.8K | 135 | 102 |
| 67 | Meteorites | 70 | 4.3K | 179 | 177 |
| 68 | elasticity | 19 | 4.3K | 34 | 2 |
| 69 | Environment | 80 | 4.0K | 990 | 1217 |
| 70 | Engineering | 176 | 4.0K | 257 | 227 |
| 71 | Planets | 88 | 3.8K | 340 | 350 |
| 72 | Mathematical Physics | 80 | 3.8K | 539 | 319 |
| 73 | Mechanics | 50 | 3.8K | 152 | 37 |
| 74 | Biochemistry | 94 | 3.7K | 2579 | 2348 |
| 75 | Environmental Management | 44 | 3.7K | 606 | 304 |
| 76 | Atomic spectroscopy | 80 | 3.7K | 67 | 33 |
| 77 | Light | 29 | 3.6K | 207 | 159 |
| 78 | Quantum Optics | 75 | 3.6K | 48 | 21 |
| 78 | Laser Spectroscopy | 75 | 3.6K | 37 | 20 |
| 80 | Nanoparticles | 43 | 3.5K | 329 | 158 |
| 81 | Water | 76 | 3.5K | 370 | 450 |
| 82 | Semiconductors | 159 | 3.4K | 75 | 61 |
| 83 | Medicine | 62 | 3.4K | 3532 | 2871 |
| 84 | Hydrology | 82 | 3.4K | 358 | 312 |
| 85 | Information Systems | 22 | 3.3K | 351 | 51 |
| 86 | fusion reactors | 196 | 3.3K | 31 | 27 |
| 87 | Research | 83 | 3.3K | 2366 | 2042 |
| 88 | Nanostructures | 57 | 3.3K | 258 | 259 |
| 89 | coal | 75 | 3.3K | 142 | 135 |
| 90 | Multiphase Flow | 34 | 3.2K | 32 | 12 |
| 91 | solar cells | 74 | 3.2K | 31 | 47 |
| 92 | water supply | 64 | 3.0K | 126 | 143 |
| 93 | Computer-Aided Design | 112 | 3.0K | 25 | 41 |
| 94 | actuators | 79 | 3.0K | 202 | 225 |
| 94 | transducers | 79 | 3.0K | 202 | 225 |
| 96 | Biophysics | 133 | 2.8K | 1092 | 1356 |
| 97 | fuel cells | 57 | 2.8K | 152 | 225 |
| 98 | Membranes | 29 | 2.8K | 566 | 319 |
| 99 | Statistical Mechanics | 101 | 2.7K | 57 | 51 |
| 100 | Magnetohydrodynamics | 98 | 2.7K | 28 | 34 |
| 101 | plasma spraying | 32 | 2.6K | 24 | 4 |
| 102 | Fluid Dynamics | 93 | 2.6K | 77 | 82 |
| 103 | Composite Materials | 100 | 2.5K | 343 | 538 |
| 104 | analysis | 35 | 2.4K | 44 | 37 |
| 105 | Environmental Health | 52 | 2.4K | 1443 | 1372 |
| 106 | Photography | 591 | 2.3K | 20 | 26 |
| 107 | Climatology | 41 | 2.3K | 483 | 404 |
| 108 | Solar power plants | 60 | 2.3K | 7 | 10 |
| 108 | Photovoltaic Cells | 60 | 2.3K | 7 | 10 |
| 110 | biofuels | 37 | 2.3K | 21 | 22 |
| 111 | Astronomy | 30 | 2.3K | 1355 | 1052 |
| 112 | Kinetics | 41 | 2.2K | 20 | 13 |
| 112 | Chemical kinetics | 41 | 2.2K | 48 | 12 |
| 114 | nucleic acids | 9 | 2.2K | 1329 | 639 |
| 115 | Electrophoresis | 22 | 2.2K | 555 | 142 |
| 115 | mass transfer | 75 | 2.2K | 160 | 204 |
| 117 | Mineralogy | 104 | 2.2K | 135 | 240 |
| 118 | Plastics | 40 | 2.1K | 311 | 114 |
| 119 | Environmental Engineering | 63 | 2.1K | 696 | 852 |
| 120 | Combinatorial chemistry | 37 | 2.1K | 111 | 109 |
| 121 | plasticity | 30 | 2.1K | 45 | 48 |
| 122 | Pollution | 48 | 2.1K | 1657 | 1816 |
| 123 | Mechanical Engineering | 99 | 1.9K | 245 | 213 |
| 124 | Water quality management | 26 | 1.9K | 480 | 138 |
| 125 | Groundwater | 59 | 1.9K | 56 | 45 |
| 126 | Geochemical Modeling | 31 | 1.9K | 55 | 51 |
| 126 | geological modeling | 31 | 1.9K | 65 | 51 |
| 128 | Meteorology | 49 | 1.9K | 600 | 702 |
| 129 | Documentation | 8 | 1.9K | 178 | 23 |
| 130 | Carbon | 55 | 1.9K | 159 | 278 |
| 131 | water resources | 23 | 1.9K | 27 | 6 |
| 132 | Seismology | 85 | 1.8K | 45 | 72 |
| 133 | Computer Graphics | 57 | 1.8K | 236 | 243 |
| 134 | Sustainable Engineering | 37 | 1.8K | 302 | 277 |
| 135 | Probability | 29 | 1.8K | 88 | 47 |
| 136 | Ferroelectricity | 70 | 1.8K | 76 | 33 |
| 137 | Rheology | 44 | 1.7K | 70 | 59 |
| 138 | Information Science | 6 | 1.7K | 2110 | 412 |
| 139 | Energy Storage | 43 | 1.7K | 175 | 198 |
| 140 | Electromagnetism | 21 | 1.6K | 169 | 37 |
| 141 | Risk | 38 | 1.6K | 51 | 65 |
| 142 | particle accelerators | 47 | 1.6K | 15 | 12 |
| 142 | sanitation | 32 | 1.6K | 461 | 603 |
| 144 | particle beams | 45 | 1.6K | 20 | 13 |
| 145 | Nuclear Energy | 134 | 1.6K | 90 | 96 |
| 146 | Microscopy | 186 | 1.6K | 26 | 166 |
| 147 | Risk Management | 27 | 1.6K | 102 | 51 |
| 147 | Financial management | 27 | 1.6K | 62 | 53 |
| 149 | Magnetic Materials | 17 | 1.6K | 639 | 214 |
| 150 | energy development | 11 | 1.6K | 320 | 213 |
| 151 | Systems Analysis | 6 | 1.6K | 858 | 56 |
| 152 | Biochemical Engineering | 17 | 1.5K | 1643 | 1451 |
| 153 | Aerosols | 51 | 1.5K | 75 | 78 |
| 154 | Soil Mechanics | 60 | 1.5K | 163 | 216 |
| 155 | Molecules | 33 | 1.5K | 466 | 272 |
| 156 | Industrial Engineering | 35 | 1.5K | 442 | 321 |
| 157 | Cytology | 11 | 1.4K | 3218 | 2169 |
| 158 | Molecular structure | 17 | 1.4K | 1176 | 596 |
| 159 | Wind power | 32 | 1.4K | 20 | 17 |
| 160 | vibration | 64 | 1.4K | 114 | 172 |
| 161 | Energy Policy | 28 | 1.4K | 794 | 791 |
| 162 | System analysis | 27 | 1.3K | 760 | 382 |
| 163 | internet | 4 | 1.3K | 1210 | 107 |
| 164 | Quality Control | 41 | 1.3K | 228 | 210 |
| 165 | Ecology | 32 | 1.3K | 2601 | 2784 |
| 166 | Information Technology | 2 | 1.3K | 3763 | 345 |
| 167 | Experimental Design | 33 | 1.3K | 38 | 65 |
| 168 | lasers | 29 | 1.3K | 473 | 170 |
| 169 | Radiation | 70 | 1.3K | 278 | 365 |
| 170 | Hydraulic Engineering | 41 | 1.3K | 147 | 140 |
| 171 | Rock Mechanics | 57 | 1.3K | 117 | 180 |
| 172 | Surface properties | 20 | 1.3K | 273 | 170 |
| 173 | Geology | 42 | 1.3K | 1044 | 947 |
| 174 | Petroleum Engineering | 28 | 1.2K | 195 | 129 |
| 175 | Astrophysics | 53 | 1.2K | 1240 | 1503 |
| 176 | radiative transfer | 55 | 1.2K | 66 | 94 |
| 177 | Medical Microbiology | 5 | 1.2K | 2415 | 1038 |
| 178 | Biosensors | 21 | 1.2K | 385 | 410 |
| 179 | Environmental monitoring | 16 | 1.2K | 2080 | 1419 |
| 179 | Biomass | 10 | 1.2K | 260 | 102 |
| 181 | Quantum theory | 34 | 1.2K | 167 | 114 |
| 182 | Atmospheric Physics | 33 | 1.1K | 566 | 619 |
| 183 | Energy Harvesting | 12 | 1.1K | 186 | 181 |
| 184 | Soft Condensed Matter | 53 | 1.1K | 171 | 260 |
| 185 | Artificial Intelligence | 41 | 1.1K | 1054 | 995 |
| 186 | Pharmacology | 3 | 1.1K | 6677 | 2263 |
| 187 | Mass Spectrometry | 17 | 1.1K | 544 | 290 |
| 188 | Hydrodynamics | 33 | 1.1K | 82 | 104 |
| 189 | Public Policy | 7 | 1.1K | 1370 | 390 |
| 190 | Natural resources | 33 | 1.1K | 114 | 163 |
| 191 | proteins | 14 | 1.1K | 1221 | 657 |
| 192 | Water pollution | 36 | 1.1K | 783 | 1029 |
| 193 | micromechanics | 38 | 1.0K | 68 | 84 |
| 194 | biopolymers | 48 | 1.0K | 202 | 302 |
| 195 | Biomechanics | 11 | 1.0K | 819 | 383 |
| 196 | Bioelectronics | 18 | 1.0K | 359 | 408 |
| 197 | Heat Exchangers | 17 | 1.0K | 398 | 250 |
| 198 | Tribology | 39 | 1.0K | 196 | 202 |
| 199 | Drug targeting | 1 | 1.0K | 701 | 20 |
| 199 | Drug delivery systems | 1 | 1.0K | 2888 | 487 |
| 199 | drug evaluation | 1 | 1.0K | 2757 | 158 |
| 202 | Cheminformatics | 2 | 989 | 543 | 119 |
| 203 | Control Theory | 42 | 980 | 366 | 331 |
| 204 | Geomagnetism | 34 | 974 | 170 | 159 |
| 205 | Laser-plasma interactions | 37 | 951 | 7 | 4 |
| 205 | Plasma density | 37 | 951 | 7 | 4 |
| 207 | Computational Biology | 18 | 925 | 1344 | 1088 |
| 208 | Earth Sciences | 27 | 899 | 1290 | 1166 |
| 209 | health planning | 25 | 897 | 655 | 391 |
| 210 | atmospheric models | 39 | 891 | 169 | 302 |
| 211 | Cosmochemistry | 29 | 880 | 174 | 241 |
| 212 | Finite Element Method | 12 | 876 | 73 | 9 |
| 213 | Smart Materials | 13 | 864 | 377 | 175 |
| 213 | United States | 66 | 864 | 1144 | 1787 |
| 215 | Structural dynamics | 30 | 846 | 252 | 330 |
| 215 | Cell Biology | 8 | 846 | 3499 | 2740 |
| 217 | solar power | 14 | 823 | 261 | 230 |
| 218 | Bioinformatics | 15 | 822 | 1049 | 913 |
| 219 | Zeolites | 21 | 819 | 245 | 241 |
| 220 | Microbial Ecology | 18 | 816 | 1070 | 1257 |
| 221 | Greenhouse gases | 20 | 813 | 75 | 95 |
| 222 | Mining Engineering | 38 | 810 | 68 | 112 |
| 223 | Applied Sciences | 1 | 801 | 51 | 11 |
| 223 | Applied Mechanics | 1 | 801 | 51 | 11 |
| 225 | Microorganisms | 2 | 794 | 1799 | 586 |
| 226 | Environmental Microbiology | 4 | 785 | 1454 | 637 |
| 227 | Magnetic Resonance Spectroscopy | 23 | 771 | 448 | 330 |
| 228 | protein | 8 | 758 | 944 | 457 |
| 229 | Electrochemical Analysis | 31 | 745 | 373 | 412 |
| 230 | Operations Research | 23 | 740 | 859 | 771 |
| 231 | Plasma devices | 38 | 737 | 43 | 101 |
| 232 | soil microbiology | 3 | 724 | 1742 | 805 |
| 233 | Organic Chemistry | 17 | 708 | 1806 | 1424 |
| 234 | genome | 6 | 695 | 1464 | 1051 |
| 235 | Manufacturing Processes | 25 | 693 | 807 | 794 |
| 236 | aerosol | 18 | 684 | 122 | 95 |
| 237 | Planetary Science | 16 | 678 | 219 | 123 |
| 238 | Integrated Circuits | 24 | 653 | 147 | 17 |
| 239 | Nanoelectronics | 56 | 651 | 80 | 111 |
| 240 | Structural design | 5 | 650 | 682 | 186 |
| 241 | Ceramic materials | 27 | 644 | 320 | 366 |
| 242 | nuclear magnetic resonance | 16 | 640 | 538 | 385 |
| 243 | Luminescence | 18 | 637 | 427 | 222 |
| 244 | biocatalysis | 4 | 633 | 148 | 196 |
| 244 | Homogeneous catalysis | 4 | 633 | 148 | 196 |
| 244 | Heterogeneous catalysis | 4 | 633 | 148 | 196 |
| 247 | Nonlinear mechanics | 9 | 632 | 173 | 49 |
| 248 | Solar System | 12 | 623 | 502 | 421 |
| 249 | Ocean Engineering | 42 | 622 | 369 | 603 |
| 250 | Data Mining | 17 | 615 | 517 | 660 |
| 251 | Genetic engineering | 11 | 612 | 1362 | 1174 |
| 252 | Bacteriology | 16 | 607 | 976 | 1181 |
| 253 | Botany | 6 | 606 | 3465 | 2170 |
| 254 | Bioorganic chemistry | 10 | 602 | 1998 | 1420 |
| 255 | Engineering Geology | 33 | 595 | 334 | 566 |
| 256 | Medical Physics | 11 | 591 | 1138 | 745 |
| 256 | Thin Films | 21 | 591 | 99 | 74 |
| 258 | Immunology | 6 | 589 | 3656 | 2545 |
| 259 | Hematology | 4 | 583 | 3782 | 1845 |
| 260 | Production Engineering | 17 | 582 | 802 | 524 |
| 261 | structural stability | 5 | 559 | 371 | 110 |
| 262 | Porous materials | 18 | 543 | 146 | 101 |
| 262 | Hazardous waste | 14 | 543 | 280 | 436 |
| 264 | environmental pollution | 15 | 541 | 2594 | 2699 |
| 265 | Quantum Computing | 9 | 539 | 74 | 35 |
| 266 | Systems Engineering | 66 | 536 | 216 | 594 |
| 267 | Synthetic biology | 8 | 532 | 166 | 90 |
| 268 | Cryptography | 6 | 529 | 444 | 73 |
| 269 | Robotics | 27 | 517 | 456 | 582 |
| 270 | Computational Fluid Dynamics | 31 | 516 | 76 | 155 |
| 271 | Shock Waves | 22 | 512 | 27 | 23 |
| 272 | Nanophotonics | 8 | 510 | 144 | 90 |
| 273 | Metallography | 31 | 505 | 129 | 226 |
| 274 | Geodynamics | 8 | 503 | 593 | 411 |
| 275 | Measurement | 22 | 497 | 306 | 328 |
| 276 | Atmospheric Chemistry | 8 | 495 | 713 | 682 |
| 277 | Structural optimization | 9 | 487 | 179 | 112 |
| 277 | Volcanoes | 8 | 487 | 152 | 108 |
| 279 | Medical Laboratory Science | 16 | 483 | 958 | 1119 |
| 280 | mathematical analysis | 36 | 478 | 840 | 793 |
| 281 | energy resources | 12 | 459 | 673 | 991 |
| 282 | cell physiology | 5 | 455 | 1546 | 1141 |
| 283 | supercritical fluids | 7 | 454 | 240 | 152 |
| 284 | Virology | 10 | 451 | 2323 | 2800 |
| 284 | radioactive waste | 12 | 451 | 271 | 472 |
| 286 | Information Theory | 19 | 449 | 395 | 429 |
| 287 | Nondestructive testing | 9 | 448 | 334 | 170 |
| 288 | Radiochemistry | 42 | 444 | 189 | 275 |
| 289 | Molecular Spectroscopy | 21 | 438 | 627 | 697 |
| 290 | Turbulence | 17 | 432 | 45 | 46 |
| 291 | explosives | 61 | 430 | 19 | 43 |
| 292 | Ergonomics | 54 | 424 | 163 | 367 |
| 293 | Metabolism | 6 | 423 | 2712 | 2209 |
| 294 | Transportation | 9 | 415 | 1078 | 790 |
| 294 | Adhesion | 16 | 415 | 133 | 124 |
| 294 | probabilities | 13 | 415 | 703 | 373 |
| 294 | adhesives | 16 | 415 | 147 | 125 |
| 298 | Histology | 11 | 411 | 1196 | 1169 |
| 298 | Industrial Microbiology | 9 | 411 | 1266 | 1219 |
| 298 | Microbial Biotechnology | 11 | 411 | 361 | 330 |
| 301 | Structural health monitoring | 3 | 410 | 225 | 58 |
| 302 | Materials Engineering | 20 | 409 | 112 | 84 |
| 303 | Medical Technology | 6 | 407 | 1582 | 811 |
| 304 | Quantum Chemistry | 14 | 406 | 365 | 230 |
| 305 | Organometallic chemistry | 17 | 404 | 848 | 708 |
| 306 | Graph Theory | 15 | 397 | 310 | 139 |
| 307 | Research Design | 5 | 395 | 1195 | 662 |
| 308 | Image Processing | 9 | 393 | 1336 | 1040 |
| 309 | Semiconductor industry | 24 | 391 | 142 | 153 |
| 310 | Crystal growth | 16 | 390 | 392 | 442 |
| 311 | industrial waste | 7 | 389 | 502 | 533 |
| 312 | Dynamics | 29 | 388 | 441 | 527 |
| 312 | clay | 12 | 388 | 294 | 382 |
| 314 | Bioinorganic chemistry | 14 | 386 | 738 | 693 |
| 315 | Neurobiology | 1 | 385 | 3295 | 1516 |
| 316 | environmental protection | 16 | 383 | 1749 | 2180 |
| 317 | Nuclear Chemistry | 35 | 378 | 249 | 367 |
| 318 | Database Management | 7 | 372 | 579 | 392 |
| 319 | Algorithms | 11 | 371 | 295 | 185 |
| 320 | Systems Biology | 10 | 370 | 966 | 823 |
| 320 | Quantum Communication | 12 | 370 | 49 | 100 |
| 322 | Civil Engineering | 10 | 345 | 1022 | 361 |
| 322 | Neural circuitry | 7 | 345 | 1425 | 1093 |
| 324 | Plants | 3 | 336 | 2558 | 1509 |
| 325 | Nervous system | 6 | 335 | 2321 | 2073 |
| 326 | Soil Science | 10 | 332 | 1179 | 1169 |
| 327 | Hydrogeology | 22 | 324 | 145 | 261 |
| 328 | Memory | 22 | 321 | 843 | 1370 |
| 329 | standardization | 4 | 318 | 41 | 15 |
| 330 | Neurons | 2 | 315 | 1047 | 1164 |
| 331 | Human-Computer Interaction | 11 | 314 | 755 | 721 |
| 331 | Visual Perception | 22 | 314 | 755 | 1226 |
| 333 | Machine Learning | 8 | 312 | 179 | 181 |
| 334 | Perception | 22 | 309 | 856 | 1373 |
| 335 | Earthquakes | 30 | 300 | 77 | 153 |
| 336 | Attention | 21 | 299 | 810 | 1309 |
| 337 | Proteome | 6 | 297 | 1048 | 977 |
| 338 | Eigenvalues | 32 | 296 | 16 | 10 |
| 339 | Pharmaceutical Chemistry | 8 | 290 | 3249 | 3077 |
| 339 | Organometallic compounds | 9 | 290 | 797 | 671 |
| 341 | clay minerals | 6 | 289 | 180 | 163 |
| 342 | Environmental Policy | 8 | 283 | 2406 | 2772 |
| 343 | Molecular Microbiology | 1 | 278 | 1723 | 939 |
| 344 | Raman spectroscopy | 16 | 273 | 238 | 388 |
| 345 | optical instruments | 8 | 270 | 270 | 257 |
| 346 | Signal Processing | 6 | 260 | 1627 | 1024 |
| 346 | Biogeochemistry | 6 | 260 | 939 | 1020 |
| 348 | Plant Biotechnology | 2 | 259 | 1186 | 527 |
| 348 | Plant genetic engineering | 2 | 259 | 1351 | 759 |
| 350 | Quantum Gravity | 9 | 252 | 1566 | 1502 |
| 350 | Microstructure | 23 | 252 | 133 | 226 |
| 352 | natural gas | 8 | 246 | 232 | 224 |
| 353 | Aerospace Engineering | 7 | 239 | 197 | 68 |
| 354 | Quantum electronics | 13 | 236 | 396 | 311 |
| 355 | Logistics | 3 | 234 | 554 | 354 |
| 356 | biological monitoring | 4 | 232 | 482 | 295 |
| 357 | Thermodynamics | 12 | 228 | 551 | 451 |
| 357 | nuclear power | 22 | 228 | 169 | 176 |
| 359 | Computer Vision | 4 | 226 | 1181 | 1005 |
| 359 | Microfabrication | 20 | 226 | 58 | 174 |
| 361 | Databases | 4 | 225 | 361 | 237 |
| 362 | Intelligent Control Systems | 9 | 223 | 581 | 318 |
| 363 | visualization | 20 | 221 | 575 | 485 |
| 364 | Cybernetics | 7 | 219 | 952 | 838 |
| 365 | Freezing | 10 | 217 | 183 | 120 |
| 366 | management | 5 | 215 | 3184 | 2520 |
| 367 | Oxidation | 8 | 210 | 82 | 93 |
| 368 | Human genetics | 1 | 203 | 4076 | 3729 |
| 369 | optical devices | 13 | 202 | 143 | 206 |
| 370 | Educational Psychology | 4 | 201 | 1381 | 989 |
| 370 | Minerals | 4 | 201 | 736 | 436 |
| 372 | global environmental change | 3 | 196 | 1044 | 890 |
| 373 | Diagnostic Imaging | 3 | 193 | 2684 | 1661 |
| 374 | Computer Science | 22 | 190 | 663 | 1115 |
| 375 | Analytical Biochemistry | 6 | 187 | 1536 | 1429 |
| 376 | Social Change | 6 | 183 | 708 | 1000 |
| 377 | Geodesy | 3 | 182 | 907 | 464 |
| 377 | viruses | 3 | 182 | 1903 | 1795 |
| 379 | Virtual reality | 7 | 181 | 173 | 194 |
| 379 | Plant cells | 3 | 181 | 1320 | 1589 |
| 381 | Electronic Packaging | 19 | 173 | 29 | 79 |
| 382 | Geothermal Energy | 11 | 171 | 80 | 160 |
| 383 | Marine resources | 13 | 168 | 233 | 512 |
| 384 | Automation | 8 | 167 | 1302 | 1418 |
| 384 | Chemical analysis | 4 | 167 | 1303 | 1014 |
| 386 | Stochastic Processes | 7 | 166 | 601 | 471 |
| 387 | Psychology | 8 | 164 | 4098 | 4368 |
| 387 | Cognition | 8 | 164 | 1235 | 1562 |
| 389 | Algae | 3 | 162 | 871 | 676 |
| 389 | Seaweed | 3 | 162 | 681 | 576 |
| 391 | Fisheries | 2 | 161 | 2419 | 1384 |
| 392 | Immunity | 4 | 160 | 2218 | 2762 |
| 393 | Surgery | 1 | 156 | 3919 | 2568 |
| 393 | Pharmaceutical Technology | 1 | 156 | 2812 | 1405 |
| 393 | catalytic activity | 1 | 156 | 1114 | 607 |
| 396 | concrete | 6 | 152 | 805 | 1113 |
| 397 | Combinatorial analysis | 11 | 151 | 618 | 485 |
| 398 | Genomics | 9 | 150 | 2619 | 3605 |
| 398 | Diabetes mellitus | 2 | 150 | 3293 | 2685 |
| 398 | Microfluidics | 4 | 150 | 200 | 165 |
| 398 | Diabetes | 2 | 150 | 3401 | 2758 |
| 402 | Power Electronics | 8 | 149 | 382 | 432 |
| 402 | Nanobiotechnology | 1 | 149 | 925 | 522 |
| 404 | Agricultural Ecology | 3 | 147 | 1376 | 1345 |
| 404 | Brain damage | 2 | 147 | 693 | 411 |
| 406 | Simulation Methods | 12 | 140 | 366 | 621 |
| 407 | Nanochemistry | 13 | 136 | 443 | 931 |
| 408 | Fractional Calculus | 4 | 135 | 101 | 76 |
| 408 | Adaptive control systems | 2 | 135 | 808 | 311 |
| 410 | Psychiatry | 3 | 134 | 5582 | 4718 |
| 410 | Structural Engineering | 8 | 134 | 1147 | 1268 |
| 410 | Magnetic Resonance Imaging | 2 | 134 | 928 | 492 |
| 413 | Liquid Crystals | 12 | 131 | 498 | 459 |
| 413 | nuclear magnetic resonance spectroscopy | 7 | 131 | 587 | 577 |
| 413 | NMR | 7 | 131 | 356 | 328 |
| 416 | Physiology | 2 | 127 | 5956 | 4646 |
| 416 | pollutants | 10 | 127 | 1154 | 2199 |
| 416 | Environmental pollutants | 10 | 127 | 1453 | 2517 |
| 419 | Computational Complexity | 5 | 122 | 910 | 593 |
| 419 | phase diagrams | 7 | 122 | 109 | 106 |
| 421 | Cognitive Science | 6 | 121 | 1190 | 1602 |
| 421 | Organelle biogenesis | 10 | 121 | 69 | 199 |
| 423 | Catalysts | 9 | 120 | 368 | 590 |
| 424 | enzymes | 3 | 117 | 1892 | 1798 |
| 425 | Toxicology | 1 | 116 | 8176 | 5400 |
| 425 | venom | 1 | 116 | 1861 | 793 |
| 425 | Toxins | 1 | 116 | 2011 | 869 |
| 428 | public works | 4 | 115 | 91 | 61 |
| 429 | Clinical Chemistry | 4 | 114 | 3393 | 3559 |
| 429 | Crystallography | 10 | 114 | 1140 | 1054 |
| 429 | Allergy | 1 | 114 | 2431 | 1961 |
| 432 | plant molecular biology | 2 | 113 | 2086 | 2113 |
| 433 | gene mapping | 4 | 112 | 2316 | 2870 |
| 434 | Petroleum | 3 | 111 | 381 | 157 |
| 435 | mathematical concepts | 6 | 109 | 241 | 229 |
| 436 | extraterrestrial environment | 9 | 108 | 345 | 503 |
| 436 | astronomical phenomena | 9 | 108 | 318 | 447 |
| 438 | Petrology | 2 | 106 | 1198 | 994 |
| 438 | Lightweight concrete | 4 | 106 | 358 | 672 |
| 438 | Random graphs | 3 | 106 | 192 | 118 |
| 441 | Infrared spectroscopy | 6 | 104 | 167 | 285 |
| 442 | Chemical industry | 1 | 103 | 2602 | 1089 |
| 442 | Aging | 2 | 103 | 4390 | 3174 |
| 444 | Therapeutics | 2 | 101 | 2852 | 2527 |
| 445 | Waste management | 7 | 100 | 1024 | 1293 |
| 445 | Continuum Mechanics | 1 | 100 | 368 | 114 |
| 447 | Diffraction | 10 | 99 | 30 | 55 |
| 447 | Expert Systems | 1 | 99 | 539 | 121 |
| 447 | Powder Metallurgy | 10 | 99 | 160 | 127 |
| 447 | Mycology | 4 | 99 | 1781 | 1879 |
| 447 | Solutions | 7 | 99 | 226 | 269 |
| 452 | Geography | 4 | 98 | 2482 | 2358 |
| 452 | carbon monoxide | 2 | 98 | 463 | 469 |
| 454 | Neurology | 7 | 97 | 4801 | 6465 |
| 454 | Brain | 4 | 97 | 2906 | 3307 |
| 454 | computer networks | 9 | 97 | 1601 | 2231 |
| 457 | Sustainable Development | 5 | 96 | 1895 | 2462 |
| 457 | Chromosome mapping | 2 | 96 | 2915 | 2740 |
| 459 | Genetics | 5 | 95 | 4223 | 5461 |
| 460 | Technological Innovations | 6 | 94 | 750 | 1106 |
| 460 | Microwaves | 14 | 94 | 551 | 707 |
| 460 | Informatics | 7 | 94 | 603 | 1028 |
| 463 | industrial hygiene | 35 | 93 | 179 | 848 |
| 464 | Traffic Engineering | 1 | 92 | 805 | 513 |
| 464 | biological factors | 2 | 92 | 2830 | 2240 |
| 466 | Computer Architecture | 7 | 91 | 285 | 345 |
| 466 | Navigation | 7 | 91 | 260 | 308 |
| 466 | magnetic resonance | 6 | 91 | 420 | 439 |
| 469 | biological evolution | 12 | 90 | 1243 | 3040 |
| 469 | Evolution | 12 | 90 | 1121 | 2536 |
| 471 | Mental Disorders | 1 | 88 | 5863 | 4076 |
| 471 | Mental illness | 1 | 88 | 4008 | 3010 |
| 471 | data protection | 8 | 88 | 235 | 419 |
| 474 | Geriatrics | 2 | 86 | 4652 | 3458 |
| 474 | Public Health | 12 | 86 | 4009 | 7332 |
| 474 | Thermochemistry | 7 | 86 | 346 | 502 |
| 477 | Entropy | 5 | 84 | 908 | 903 |
| 478 | Building Materials | 5 | 82 | 1483 | 2239 |
| 478 | Risk assessment | 8 | 82 | 295 | 569 |
| 480 | sustainability | 2 | 81 | 1221 | 1290 |
| 481 | Genetic algorithms | 4 | 80 | 164 | 296 |
| 481 | Calorimetry | 7 | 80 | 801 | 1117 |
| 481 | Thermal analysis | 7 | 80 | 801 | 1117 |
| 484 | Wireless Communication Systems | 3 | 79 | 2362 | 1843 |
| 484 | Fossil fuels | 1 | 79 | 204 | 15 |
| 486 | Combinatorial optimization | 8 | 78 | 239 | 303 |
| 486 | Organic Geochemistry | 1 | 78 | 748 | 637 |
| 488 | Liposomes | 1 | 77 | 1150 | 710 |
| 488 | Lipid bilayers | 1 | 77 | 915 | 579 |
| 490 | Photochemistry | 5 | 73 | 1714 | 2276 |
| 491 | Occupational Health | 26 | 72 | 299 | 1255 |
| 491 | research and development | 4 | 72 | 278 | 458 |
| 491 | Radio | 9 | 72 | 486 | 708 |
| 494 | Radiobiology | 7 | 71 | 1625 | 2221 |
| 495 | Social Psychology | 1 | 70 | 3894 | 2703 |
| 495 | Gerontology | 1 | 70 | 3914 | 2227 |
| 495 | particles | 10 | 70 | 445 | 1190 |
| 498 | Oceanography | 9 | 69 | 1332 | 2289 |
| 498 | Pharmacogenetics | 1 | 69 | 2265 | 1809 |
| 498 | Genetic therapy | 1 | 69 | 2533 | 2103 |
| 501 | Optoelectronic devices | 7 | 68 | 546 | 642 |
| 502 | Telemedicine | 2 | 67 | 650 | 632 |
| 502 | Radioisotopes | 7 | 67 | 960 | 1270 |
| 504 | Drying | 6 | 66 | 253 | 483 |
| 505 | Climate change | 2 | 65 | 1532 | 2240 |
| 505 | Biodiversity conservation | 2 | 65 | 2413 | 2816 |
| 505 | Eutrophication | 2 | 65 | 1441 | 2182 |
| 505 | Soil ecology | 2 | 65 | 1098 | 1244 |
| 509 | Electromagnetic waves | 4 | 64 | 175 | 229 |
| 510 | data collection | 5 | 63 | 944 | 1914 |
| 511 | Alloys | 6 | 61 | 156 | 179 |
| 511 | Textile industry | 5 | 61 | 491 | 473 |
| 513 | Bifurcation Theory | 1 | 60 | 1257 | 623 |
| 513 | Parallel Processing | 5 | 60 | 54 | 98 |
| 513 | Matroids | 5 | 60 | 177 | 258 |
| 516 | weather | 2 | 59 | 858 | 931 |
| 516 | Psychophysiology | 3 | 59 | 3547 | 4243 |
| 518 | Autonomous robots | 2 | 58 | 241 | 326 |
| 519 | Paleontology | 1 | 56 | 2240 | 1545 |
| 519 | Chromosomes | 2 | 56 | 1507 | 1678 |
| 521 | Physical organic chemistry | 1 | 55 | 2386 | 1828 |
| 521 | behavioral medicine | 1 | 55 | 2798 | 2520 |
| 521 | human behavior | 1 | 55 | 4734 | 4469 |
| 524 | Social Sciences | 1 | 54 | 7122 | 3831 |
| 524 | Evolutionary Computation | 3 | 54 | 400 | 619 |
| 524 | Social policy | 1 | 54 | 2048 | 1173 |
| 527 | Epidemiology | 2 | 53 | 5951 | 6010 |
| 527 | Soil biology | 1 | 53 | 1615 | 1647 |
| 529 | Medical Oncology | 1 | 51 | 3890 | 3227 |
| 529 | Optical Communications | 5 | 51 | 488 | 745 |
| 531 | Photobiology | 3 | 50 | 1699 | 2133 |
| 532 | Geometry | 2 | 49 | 1641 | 1060 |
| 533 | mutation | 1 | 48 | 1324 | 1290 |
| 533 | Water chemistry | 3 | 48 | 357 | 503 |
| 535 | infrared radiation | 4 | 47 | 594 | 774 |
| 535 | Fractals | 2 | 47 | 1719 | 1616 |
| 537 | Discrete geometry | 1 | 46 | 507 | 270 |
| 537 | Cement | 2 | 46 | 839 | 1152 |
| 539 | Economics | 4 | 45 | 4401 | 4554 |
| 539 | Hydraulic machinery | 2 | 45 | 196 | 126 |
| 539 | Broadcasting | 4 | 45 | 149 | 252 |
| 539 | Granular materials | 6 | 45 | 360 | 1032 |
| 543 | Cognitive Psychology | 2 | 44 | 598 | 519 |
| 543 | Surface-Active Agents | 2 | 44 | 1580 | 2133 |
| 543 | economic policy | 2 | 44 | 3554 | 2697 |
| 543 | Solitons | 1 | 44 | 1999 | 1528 |
| 543 | Chaos | 1 | 44 | 1999 | 1528 |
| 543 | Roads | 3 | 44 | 863 | 850 |
| 543 | Decision making | 11 | 44 | 783 | 2358 |
| 550 | Business | 1 | 43 | 3924 | 3050 |
| 551 | Topology | 2 | 42 | 471 | 328 |
| 551 | Synaptic Transmission | 1 | 42 | 1066 | 1032 |
| 551 | Scheduling | 2 | 42 | 193 | 239 |
| 551 | Production Scheduling | 2 | 42 | 193 | 239 |
| 555 | Cognitive neuroscience | 3 | 41 | 1128 | 1711 |
| 555 | irrigation | 1 | 41 | 746 | 492 |
| 555 | drainage | 1 | 41 | 632 | 330 |
| 555 | Imaging systems | 2 | 41 | 1170 | 933 |
| 555 | Uncertainty | 10 | 41 | 43 | 286 |
| 560 | Molecular Pharmacology | 1 | 40 | 1591 | 1736 |
| 560 | Energy Consumption | 2 | 40 | 310 | 402 |
| 560 | atmosphere | 3 | 40 | 986 | 1468 |
| 560 | natural disasters | 4 | 40 | 1294 | 2264 |
| 564 | Tissue Engineering | 1 | 39 | 716 | 626 |
| 564 | Radiation Protection | 3 | 39 | 911 | 763 |
| 564 | radiation monitoring | 2 | 39 | 1046 | 714 |
| 564 | Real-time Data Processing | 1 | 39 | 265 | 201 |
| 568 | Nanomedicine | 1 | 38 | 605 | 630 |
| 568 | Water Purification | 2 | 38 | 1667 | 1789 |
| 568 | animals | 1 | 38 | 2555 | 1843 |
| 568 | security measures | 4 | 38 | 25 | 92 |
| 568 | electrocatalysis | 2 | 38 | 143 | 180 |
| 568 | Yeast | 1 | 38 | 931 | 918 |
| 574 | Health Physics | 1 | 37 | 574 | 276 |
| 574 | hazard mitigation | 3 | 37 | 1065 | 1697 |
| 574 | RNA | 1 | 37 | 1082 | 1179 |
| 577 | Origin of life | 9 | 36 | 39 | 292 |
| 577 | Superconductors | 6 | 36 | 554 | 908 |
| 577 | Geobiology | 4 | 36 | 476 | 938 |
| 577 | X-ray crystallography | 2 | 36 | 893 | 870 |
| 581 | Software Engineering | 5 | 35 | 925 | 1317 |
| 581 | Computer Engineering | 4 | 35 | 761 | 1254 |
| 581 | Differential Equations | 4 | 35 | 944 | 1109 |
| 581 | Biodegradation | 1 | 35 | 1561 | 1621 |
| 581 | Chemical safety | 19 | 35 | 2 | 30 |
| 581 | Water Microbiology | 1 | 35 | 1106 | 1075 |
| 581 | policy making | 3 | 35 | 28 | 80 |
| 581 | Fouling | 1 | 35 | 570 | 632 |
| 589 | Biodiversity | 1 | 34 | 4190 | 3877 |
| 590 | Chromatography | 4 | 33 | 1779 | 2827 |
| 590 | big data | 3 | 33 | 586 | 910 |
| 590 | Fungi | 2 | 33 | 1494 | 1915 |
| 590 | Chromatographic analysis | 4 | 33 | 2063 | 3051 |
| 594 | Radiology | 6 | 32 | 1544 | 2544 |
| 594 | gene therapy | 1 | 32 | 2374 | 2533 |
| 594 | Host-parasite interactions | 2 | 32 | 1942 | 3035 |
| 594 | Virulence | 2 | 32 | 1764 | 2845 |
| 598 | Synchrotron Radiation | 3 | 31 | 476 | 687 |
| 599 | Sedimentology | 3 | 30 | 732 | 1247 |
| 599 | Vocational guidance | 1 | 30 | 1640 | 1527 |
| 601 | Biogeography | 1 | 29 | 1749 | 2112 |
| 601 | ecosystem | 1 | 29 | 2546 | 2863 |
| 603 | ecological risk assessment | 2 | 28 | 419 | 641 |
| 603 | Diagnostic microbiology | 1 | 28 | 2599 | 3287 |
| 603 | environmental exposure | 1 | 28 | 3904 | 4006 |
| 603 | radar | 3 | 28 | 250 | 401 |
| 603 | Ion channels | 3 | 28 | 88 | 241 |
| 603 | Sonar | 3 | 28 | 225 | 351 |
| 603 | Health Risk Assessment | 2 | 28 | 730 | 963 |
| 610 | Agronomy | 1 | 27 | 1161 | 1292 |
| 610 | Drug design | 2 | 27 | 2651 | 3445 |
| 610 | Radio wave propagation | 8 | 27 | 498 | 1196 |
| 610 | Structure-activity relationship | 2 | 27 | 667 | 822 |
| 614 | Telecommunication Systems | 2 | 26 | 2171 | 2293 |
| 614 | winds | 1 | 26 | 301 | 197 |
| 616 | Sports Medicine | 2 | 25 | 3778 | 3932 |
| 616 | Biogeochemical cycles | 1 | 25 | 838 | 1186 |
| 616 | Ion Exchange | 2 | 25 | 192 | 263 |
| 616 | Plasma chemistry | 3 | 25 | 457 | 834 |
| 616 | X-ray spectroscopy | 3 | 25 | 268 | 411 |
| 616 | Solvent extraction | 2 | 25 | 192 | 263 |
| 616 | mental processes | 2 | 25 | 526 | 653 |
| 616 | World Wide Web | 1 | 25 | 973 | 645 |
| 624 | Mechatronics | 2 | 24 | 1027 | 1332 |
| 624 | Social Networks | 2 | 24 | 461 | 715 |
| 624 | Online social networks | 2 | 24 | 472 | 698 |
| 624 | infection | 2 | 24 | 2667 | 3734 |
| 624 | innovation | 1 | 24 | 1198 | 1377 |
| 629 | Education | 5 | 23 | 3860 | 5494 |
| 629 | Geotechnical Engineering | 3 | 23 | 596 | 969 |
| 629 | Bioenergetics | 1 | 23 | 1728 | 1908 |
| 629 | soil pollution | 2 | 23 | 851 | 1263 |
| 629 | Building | 2 | 23 | 931 | 1033 |
| 629 | Scanning electron microscopy | 3 | 23 | 171 | 359 |
| 635 | Environmental Law | 1 | 22 | 2310 | 2913 |
| 635 | Terahertz Technology | 2 | 22 | 56 | 61 |
| 635 | Sensor Networks | 1 | 22 | 536 | 456 |
| 635 | Memory disorders | 1 | 22 | 522 | 555 |
| 635 | Respiration | 2 | 22 | 2281 | 3299 |
| 640 | Transportation Engineering | 1 | 21 | 756 | 786 |
| 640 | occupational health and safety | 9 | 21 | 115 | 506 |
| 640 | mediation | 1 | 21 | 203 | 160 |
| 640 | Ultrasonics | 4 | 21 | 1066 | 2526 |
| 640 | Medical innovations | 2 | 21 | 1688 | 3169 |
| 640 | Approximation Theory | 3 | 21 | 486 | 635 |
| 640 | Ultrasound | 4 | 21 | 559 | 1324 |
| 647 | Pathology | 1 | 20 | 4565 | 5128 |
| 647 | emergency management | 5 | 20 | 713 | 2068 |
| 647 | Land use | 1 | 20 | 2175 | 2500 |
| 647 | Access to Information | 2 | 20 | 253 | 575 |
| 647 | histological techniques | 1 | 20 | 1468 | 1894 |
| 647 | System design | 4 | 20 | 243 | 621 |
| 647 | Plant diseases | 1 | 20 | 3322 | 3337 |
| 647 | Information dissemination | 2 | 20 | 253 | 575 |
| 655 | Medical genetics | 1 | 19 | 5001 | 5856 |
| 655 | Industrial Ecology | 1 | 19 | 418 | 653 |
| 655 | X-rays | 2 | 19 | 1123 | 1381 |
| 655 | international cooperation | 1 | 19 | 1332 | 1515 |
| 659 | Earthquake Engineering | 4 | 18 | 1224 | 2372 |
| 659 | Electron Microscopy | 4 | 18 | 397 | 939 |
| 659 | Coding Theory | 1 | 18 | 691 | 554 |
| 659 | Ventilation | 3 | 18 | 619 | 1403 |
| 659 | Tunneling | 4 | 18 | 293 | 847 |
| 659 | underground construction | 4 | 18 | 293 | 847 |
| 659 | Liquid chromatography | 2 | 18 | 843 | 1015 |
| 666 | Calculus of Variations | 1 | 17 | 868 | 749 |
| 666 | Inorganic Polymers | 1 | 17 | 76 | 86 |
| 666 | Organometallic polymers | 1 | 17 | 76 | 86 |
| 669 | Neuropsychology | 1 | 16 | 4219 | 4797 |
| 669 | Molecular Genetics | 2 | 16 | 3011 | 4605 |
| 669 | energy transfer | 2 | 16 | 13 | 22 |
| 669 | cell membrane | 1 | 16 | 1172 | 1373 |
| 669 | cryosphere | 2 | 16 | 557 | 945 |
| 669 | Nonlinear systems | 4 | 16 | 561 | 1188 |
| 675 | Marine Engineering | 3 | 15 | 316 | 472 |
| 675 | air quality management | 1 | 15 | 1240 | 1755 |
| 675 | Sound | 8 | 15 | 504 | 1384 |
| 675 | indoor air pollution | 1 | 15 | 901 | 1281 |
| 675 | Radio waves | 2 | 15 | 466 | 605 |
| 675 | Sick building syndrome | 1 | 15 | 901 | 1281 |
| 675 | Cellulose | 1 | 15 | 1294 | 1727 |
| 675 | synthesis | 1 | 15 | 1950 | 1924 |
| 683 | Naval Architecture | 3 | 14 | 357 | 697 |
| 683 | Educational Technology | 2 | 14 | 2206 | 3283 |
| 683 | technology transfer | 4 | 14 | 201 | 849 |
| 683 | Malaria | 1 | 14 | 1541 | 2009 |
| 683 | Fuzzy systems | 2 | 14 | 2419 | 2985 |
| 683 | Radio frequency | 3 | 14 | 392 | 788 |
| 689 | Emergency Medical Services | 1 | 13 | 1894 | 2208 |
| 689 | Environmental Geology | 3 | 13 | 1861 | 3424 |
| 689 | Emergency Medicine | 1 | 13 | 3232 | 3514 |
| 689 | Wireless Communication | 1 | 13 | 959 | 1030 |
| 689 | machinery | 3 | 13 | 906 | 1695 |
| 689 | electroplating | 3 | 13 | 70 | 97 |
| 689 | surface preparation | 3 | 13 | 60 | 93 |
| 689 | mammals | 1 | 13 | 2109 | 2393 |
| 689 | rehabilitation | 2 | 13 | 3411 | 5041 |
| 698 | cosmic rays | 2 | 12 | 736 | 1143 |
| 698 | Microbial Metabolism | 1 | 12 | 486 | 865 |
| 698 | Cyberterrorism | 2 | 12 | 52 | 295 |
| 698 | Telecommunication | 1 | 12 | 4175 | 4014 |
| 698 | Chemical structure | 2 | 12 | 815 | 1174 |
| 698 | Electromagnetic fields | 1 | 12 | 731 | 627 |
| 704 | Intelligent Transportation Systems | 1 | 11 | 1394 | 1748 |
| 704 | Optoelectronics | 4 | 11 | 525 | 1127 |
| 704 | Multiscale Modeling | 2 | 11 | 57 | 82 |
| 704 | preventive medicine | 2 | 11 | 2164 | 3777 |
| 704 | ports | 3 | 11 | 211 | 648 |
| 704 | Biometrics | 2 | 11 | 1641 | 2449 |
| 704 | Semantic web | 4 | 11 | 113 | 571 |
| 704 | Waterways | 4 | 11 | 68 | 233 |
| 704 | Library Science | 3 | 11 | 1552 | 2114 |
| 704 | Harbors | 4 | 11 | 87 | 282 |
| 704 | Sedimentary rocks | 3 | 11 | 704 | 1399 |
| 715 | Acoustics | 1 | 10 | 598 | 418 |
| 715 | Information Retrieval | 2 | 10 | 699 | 1304 |
| 715 | Neurotransmitters | 1 | 10 | 1213 | 1169 |
| 715 | Leukemia | 1 | 10 | 2346 | 2629 |
| 715 | Taste | 1 | 10 | 664 | 999 |
| 715 | flavor | 1 | 10 | 460 | 755 |
| 715 | Chemical processes | 1 | 10 | 1299 | 1661 |
| 715 | smell | 1 | 10 | 664 | 999 |
| 723 | Algebra | 2 | 9 | 1964 | 2050 |
| 723 | Information visualization | 1 | 9 | 448 | 542 |
| 723 | Electrocardiography | 1 | 9 | 959 | 1035 |
| 723 | bioclimatology | 1 | 9 | 1945 | 2600 |
| 723 | Wetland ecology | 1 | 9 | 1036 | 1418 |
| 723 | Interferons | 1 | 9 | 698 | 1055 |
| 723 | Wetland conservation | 1 | 9 | 757 | 1086 |
| 723 | Health promotion | 2 | 9 | 2418 | 4147 |
| 723 | Electrophysiology | 1 | 9 | 2321 | 2723 |
| 723 | peptides | 2 | 9 | 1420 | 2426 |
| 723 | cytokines | 1 | 9 | 2646 | 3597 |
| 723 | Great Lakes | 1 | 9 | 494 | 747 |
| 723 | Climate | 1 | 9 | 1348 | 2008 |
| 723 | Interactive multimedia | 2 | 9 | 462 | 966 |
| 723 | Cytokine | 1 | 9 | 941 | 1489 |
| 723 | Developing countries | 2 | 9 | 3749 | 5693 |
| 723 | Wetlands | 1 | 9 | 772 | 1092 |
| 740 | Atmospheric Science | 1 | 8 | 448 | 673 |
| 740 | Genetic Toxicology | 1 | 8 | 1075 | 1744 |
| 740 | Politics | 4 | 8 | 696 | 1065 |
| 740 | Diet | 2 | 8 | 3325 | 5602 |
| 740 | government | 4 | 8 | 781 | 1356 |
| 740 | Culture techniques | 1 | 8 | 696 | 938 |
| 746 | Environmental Toxicology | 2 | 7 | 3572 | 6164 |
| 746 | Geographic information systems | 4 | 7 | 1113 | 2902 |
| 746 | Crystallization | 2 | 7 | 801 | 1292 |
| 746 | Multivariate Analysis | 1 | 7 | 931 | 1224 |
| 746 | Crisis management | 1 | 7 | 427 | 622 |
| 746 | Superconductivity | 1 | 7 | 916 | 1135 |
| 746 | locomotion | 1 | 7 | 1407 | 1864 |
| 746 | posture | 1 | 7 | 1407 | 1864 |
| 746 | Sports | 1 | 7 | 3730 | 4027 |
| 746 | Ultrasonic Imaging | 1 | 7 | 1114 | 1629 |
| 746 | Classification | 1 | 7 | 644 | 789 |
| 746 | software | 1 | 7 | 2018 | 2924 |
| 746 | gait | 1 | 7 | 1407 | 1864 |
| 746 | Exercise | 1 | 7 | 2618 | 3117 |
| 746 | Agriculture | 1 | 7 | 4499 | 5434 |
| 746 | walking | 1 | 7 | 1407 | 1864 |
| 762 | Dietetics | 1 | 6 | 1829 | 2203 |
| 762 | Fishery management | 1 | 6 | 1683 | 2292 |
| 762 | Sequential Analysis | 1 | 6 | 203 | 229 |
| 762 | Environmental risk assessment | 1 | 6 | 996 | 1585 |
| 762 | environmental control | 1 | 6 | 563 | 965 |
| 762 | libraries | 2 | 6 | 1179 | 1396 |
| 762 | China | 2 | 6 | 4319 | 7049 |
| 762 | Fibers | 1 | 6 | 271 | 336 |
| 762 | Aquaculture | 1 | 6 | 2585 | 3398 |
| 771 | Agricultural Science | 1 | 5 | 530 | 971 |
| 771 | Cytogenetics | 1 | 5 | 3085 | 4339 |
| 771 | Dynamic programming | 3 | 5 | 19 | 43 |
| 771 | Nonlinear Optics | 1 | 5 | 626 | 796 |
| 771 | Spintronics | 1 | 5 | 131 | 180 |
| 771 | Detectors | 2 | 5 | 1443 | 2726 |
| 777 | Ethics | 1 | 4 | 2108 | 3045 |
| 777 | Process Control | 1 | 4 | 1630 | 2509 |
| 777 | Marine Meteorology | 1 | 4 | 656 | 967 |
| 777 | Number Theory | 1 | 4 | 1532 | 1714 |
| 777 | Metallic Glasses | 1 | 4 | 856 | 1315 |
| 777 | Business Ethics | 1 | 4 | 1648 | 2406 |
| 777 | Semigroups | 1 | 4 | 560 | 647 |
| 777 | Japan | 3 | 4 | 2647 | 5071 |
| 785 | Sociology | 1 | 3 | 5963 | 7844 |
| 785 | Marine Biology | 1 | 3 | 4373 | 5939 |
| 785 | Game Theory | 1 | 3 | 1120 | 1529 |
| 785 | Functional Analysis | 1 | 3 | 2032 | 2453 |
| 785 | Quality Management | 5 | 3 | 118 | 781 |
| 785 | Nonlinear functional analysis | 1 | 3 | 1886 | 2432 |
| 785 | terrorism | 1 | 3 | 587 | 925 |
| 785 | Indoor air quality | 2 | 3 | 136 | 452 |
| 785 | Air Conditioning | 2 | 3 | 288 | 769 |
| 785 | Fiber Optics | 2 | 3 | 742 | 1475 |
| 785 | Logic Programming | 1 | 3 | 599 | 763 |
| 785 | Multimedia Systems | 1 | 3 | 3133 | 4060 |
| 785 | North America | 1 | 3 | 1985 | 2929 |
| 785 | Nuclear Facilities | 1 | 3 | 171 | 258 |
| 785 | heating | 2 | 3 | 217 | 657 |
| 785 | national security | 1 | 3 | 823 | 982 |
| 785 | Bones | 1 | 3 | 1864 | 2532 |
| 785 | silicon | 1 | 3 | 883 | 1408 |
| 803 | Anthropology | 2 | 2 | 2479 | 4124 |
| 803 | Embedded Systems | 1 | 2 | 411 | 675 |
| 803 | Mobile Computing | 1 | 2 | 2283 | 3110 |
| 803 | Conservation Biology | 1 | 2 | 2256 | 3344 |
| 803 | Ornithology | 1 | 2 | 1798 | 2427 |
| 803 | Child psychology | 1 | 2 | 2906 | 4267 |
| 803 | Magnetism | 1 | 2 | 266 | 296 |
| 803 | Interfaces | 1 | 2 | 732 | 1258 |
| 803 | natural history museums | 1 | 2 | 245 | 317 |
| 803 | Emulsions | 1 | 2 | 832 | 1423 |
| 803 | Physical fitness | 1 | 2 | 1990 | 2913 |
| 803 | Ethnology | 2 | 2 | 2281 | 3880 |
| 803 | space environment | 1 | 2 | 465 | 757 |
| 803 | Aviation | 1 | 2 | 243 | 445 |
| 803 | natural products | 1 | 2 | 3153 | 4330 |
| 803 | biological agents | 1 | 2 | 1399 | 1895 |
| 803 | Radiation dosimetry | 1 | 2 | 1132 | 1673 |
| 803 | Birds | 1 | 2 | 2154 | 2810 |
| 803 | shipbuilding | 1 | 2 | 220 | 316 |
| 822 | Systems Theory | 1 | 1 | 1451 | 2461 |
| 822 | Geomorphology | 2 | 1 | 1865 | 3373 |
| 822 | Industrial Organization | 1 | 1 | 664 | 1191 |
| 822 | International Relations | 1 | 1 | 2258 | 2838 |
| 822 | Economic Development | 1 | 1 | 3312 | 4898 |
| 822 | Remote Sensing | 1 | 1 | 2895 | 4068 |
| 822 | Human Rights | 1 | 1 | 1253 | 2016 |
| 822 | Photogrammetry | 1 | 1 | 1840 | 2456 |
| 822 | Biological Systems | 1 | 1 | 1696 | 2881 |
| 822 | Social Systems | 1 | 1 | 585 | 1095 |
| 822 | disarmament | 1 | 1 | 400 | 650 |
| 822 | Cardiovascular system | 1 | 1 | 3011 | 4352 |
| 822 | peace | 1 | 1 | 965 | 1457 |
| 822 | Microwave devices | 2 | 1 | 236 | 568 |
| 822 | Genes | 1 | 1 | 2359 | 3731 |
| 837 | Public Health Informatics | 2 | 0 | 157 | 422 |
| 837 | Integrated Optics | 1 | 0 | 211 | 444 |
| 837 | microwave antennas | 1 | 0 | 850 | 1438 |
| 837 | Microprocessors | 2 | 0 | 816 | 1991 |
| 837 | Noise | 1 | 0 | 387 | 750 |
| 837 | Strategic planning | 1 | 0 | 1500 | 2518 |
| 837 | Nanomanufacturing | 1 | 0 | 268 | 554 |
| 837 | Obesity | 1 | 0 | 3932 | 6085 |
| 837 | Mitochondria | 1 | 0 | 810 | 1438 |
| 837 | Korea | 1 | 0 | 833 | 1526 |
| 837 | Investigations | 1 | 0 | 15 | 56 |
| 837 | Continental shelf | 1 | 0 | 779 | 1320 |
| 837 | Laboratories | 1 | 0 | 62 | 169 |
| 837 | Neutrons | 1 | 0 | 125 | 256 |
| 837 | India | 1 | 0 | 3750 | 5328 |
| 837 | carbonate rocks | 1 | 0 | 298 | 638 |
| 837 | Radiation effects | 1 | 0 | 1321 | 2230 |
