| 1 | Chemical Engineering | 2,253 | 71.0K | 8 | 20 |
| 2 | Petroleum Engineering | 2,233 | 57.7K | 1 | 1 |
| 3 | Catalysis | 1,081 | 55.7K | 24 | 32 |
| 4 | Chemistry | 1,394 | 51.2K | 283 | 394 |
| 5 | Geophysics | 2,251 | 49.5K | 16 | 61 |
| 6 | Materials | 937 | 41.9K | 164 | 180 |
| 7 | coal | 947 | 37.7K | 3 | 3 |
| 8 | Nanotechnology | 783 | 35.9K | 117 | 168 |
| 9 | Geochemistry | 934 | 31.2K | 5 | 30 |
| 10 | Energy Policy | 719 | 28.0K | 5 | 11 |
| 11 | Biochemical Engineering | 581 | 27.7K | 27 | 83 |
| 12 | natural gas | 708 | 25.3K | 1 | 1 |
| 13 | Colloids | 910 | 25.0K | 12 | 45 |
| 14 | Petroleum Geology | 672 | 23.6K | 1 | 1 |
| 15 | Marine Geology | 675 | 23.5K | 1 | 1 |
| 16 | Surface Chemistry | 841 | 23.3K | 13 | 39 |
| 17 | Materials Science | 525 | 22.9K | 162 | 170 |
| 18 | Biocompatible Materials | 303 | 19.4K | 195 | 166 |
| 19 | Physics | 611 | 18.3K | 625 | 1046 |
| 20 | Nanostructured Materials | 364 | 17.5K | 100 | 90 |
| 21 | nanoscience | 327 | 14.4K | 87 | 148 |
| 22 | Geology | 1,167 | 12.9K | 15 | 171 |
| 23 | energy conservation | 221 | 12.4K | 38 | 49 |
| 24 | Optical materials | 162 | 11.6K | 179 | 114 |
| 25 | China | 755 | 11.4K | 26 | 41 |
| 26 | Industrial Engineering | 480 | 10.4K | 9 | 19 |
| 27 | Pollution | 247 | 10.3K | 352 | 479 |
| 28 | Earth Sciences | 863 | 9.9K | 10 | 145 |
| 29 | Environment | 181 | 9.6K | 422 | 554 |
| 30 | actuators | 110 | 9.6K | 117 | 34 |
| 30 | transducers | 110 | 9.6K | 117 | 34 |
| 32 | Biology | 122 | 9.3K | 1553 | 1435 |
| 33 | Environmental Health | 181 | 9.2K | 409 | 400 |
| 34 | Renewable Energy Sources | 163 | 9.0K | 59 | 145 |
| 35 | environmental protection | 315 | 8.6K | 18 | 100 |
| 36 | Carbon | 123 | 8.6K | 37 | 36 |
| 37 | Electrochemistry | 218 | 8.2K | 293 | 201 |
| 38 | Rock Mechanics | 230 | 7.8K | 16 | 25 |
| 39 | Science | 243 | 7.6K | 1026 | 1670 |
| 40 | Green Chemistry | 176 | 7.0K | 49 | 86 |
| 41 | Polymers | 341 | 6.9K | 295 | 438 |
| 42 | mass transfer | 221 | 6.7K | 30 | 49 |
| 43 | Ecology | 171 | 6.7K | 735 | 876 |
| 44 | energy resources | 89 | 6.6K | 42 | 48 |
| 45 | Analytical Chemistry | 202 | 6.5K | 381 | 402 |
| 46 | Environmental Engineering | 149 | 6.4K | 272 | 327 |
| 47 | Mathematics | 430 | 6.2K | 399 | 366 |
| 48 | Ocean Engineering | 381 | 6.1K | 22 | 47 |
| 49 | Automation | 111 | 6.0K | 206 | 201 |
| 50 | Heat Exchangers | 181 | 5.9K | 20 | 28 |
| 51 | Biomass Energy | 104 | 5.7K | 168 | 175 |
| 52 | Building Materials | 125 | 5.4K | 93 | 115 |
| 53 | Engineering Geology | 156 | 5.4K | 43 | 60 |
| 54 | sanitation | 73 | 5.2K | 210 | 228 |
| 55 | Fracture mechanics | 219 | 5.1K | 27 | 39 |
| 56 | Water | 113 | 4.9K | 215 | 309 |
| 57 | Sustainable Engineering | 148 | 4.8K | 37 | 74 |
| 58 | Energy Conversion | 59 | 4.7K | 145 | 191 |
| 59 | Environmental Management | 95 | 4.7K | 193 | 192 |
| 60 | environmental pollution | 151 | 4.7K | 362 | 531 |
| 61 | Engineering | 405 | 4.7K | 72 | 211 |
| 62 | Biotechnology | 161 | 4.6K | 698 | 1005 |
| 63 | Zeolites | 146 | 4.2K | 5 | 8 |
| 64 | Soil Mechanics | 147 | 4.2K | 47 | 82 |
| 65 | Biomedical Engineering | 166 | 4.0K | 450 | 610 |
| 66 | fuel cells | 72 | 4.0K | 111 | 136 |
| 67 | Environmental Chemistry | 42 | 3.9K | 346 | 260 |
| 68 | Nanoparticles | 115 | 3.9K | 94 | 136 |
| 69 | Cosmochemistry | 105 | 3.8K | 24 | 38 |
| 70 | Artificial Intelligence | 214 | 3.8K | 202 | 432 |
| 71 | Neural circuitry | 137 | 3.7K | 65 | 105 |
| 72 | polymerization | 223 | 3.7K | 341 | 549 |
| 73 | Membranes | 75 | 3.4K | 205 | 214 |
| 74 | Hydrogeology | 339 | 3.4K | 2 | 13 |
| 75 | Chemical industry | 202 | 3.3K | 37 | 23 |
| 76 | Biogeochemistry | 75 | 3.1K | 101 | 173 |
| 77 | Organic Geochemistry | 74 | 3.1K | 15 | 28 |
| 78 | Mining Engineering | 67 | 3.0K | 27 | 29 |
| 79 | Microbiology | 74 | 3.0K | 1437 | 1503 |
| 80 | Environmental monitoring | 86 | 2.9K | 427 | 583 |
| 81 | Industrial Safety | 65 | 2.9K | 53 | 41 |
| 82 | Hydrology | 337 | 2.9K | 46 | 300 |
| 83 | Internet of Things | 86 | 2.9K | 78 | 90 |
| 84 | internet | 92 | 2.9K | 83 | 106 |
| 85 | Technology | 163 | 2.8K | 282 | 477 |
| 86 | Fluid Dynamics | 341 | 2.8K | 2 | 64 |
| 87 | Porous materials | 173 | 2.8K | 1 | 7 |
| 88 | Fluid Mechanics | 345 | 2.8K | 20 | 155 |
| 89 | Water pollution | 73 | 2.7K | 375 | 460 |
| 90 | particles | 113 | 2.6K | 8 | 11 |
| 91 | Statistical physics | 145 | 2.6K | 526 | 634 |
| 92 | Asia | 125 | 2.6K | 114 | 98 |
| 93 | Composite Materials | 80 | 2.5K | 386 | 484 |
| 94 | Metals | 67 | 2.5K | 341 | 325 |
| 95 | Geomagnetism | 76 | 2.5K | 48 | 40 |
| 96 | Signal Processing | 87 | 2.4K | 375 | 458 |
| 97 | Environmental Policy | 60 | 2.4K | 476 | 574 |
| 98 | Manufacturing Processes | 104 | 2.4K | 184 | 243 |
| 99 | Bioengineering | 89 | 2.3K | 622 | 1051 |
| 100 | Research | 111 | 2.2K | 1455 | 1944 |
| 101 | Emulsions | 155 | 2.2K | 2 | 2 |
| 102 | Molecular Biology | 91 | 2.2K | 1678 | 2300 |
| 103 | Biochemistry | 112 | 2.2K | 1842 | 2377 |
| 104 | Image Processing | 105 | 2.1K | 185 | 389 |
| 105 | Cybernetics | 52 | 2.1K | 224 | 262 |
| 106 | Mechanical Engineering | 166 | 2.0K | 112 | 191 |
| 107 | System analysis | 83 | 1.9K | 225 | 259 |
| 108 | Nanostructures | 43 | 1.9K | 346 | 365 |
| 109 | Power Electronics | 50 | 1.9K | 172 | 214 |
| 110 | Magnetic Materials | 61 | 1.9K | 184 | 196 |
| 111 | Tribology | 94 | 1.9K | 59 | 99 |
| 112 | Electronics | 102 | 1.8K | 530 | 629 |
| 113 | Groundwater | 299 | 1.8K | 3 | 44 |
| 114 | Wireless Communication Systems | 77 | 1.7K | 322 | 395 |
| 115 | computer networks | 103 | 1.7K | 199 | 362 |
| 116 | Geothermal Energy | 42 | 1.6K | 13 | 9 |
| 117 | Soft Condensed Matter | 65 | 1.6K | 119 | 166 |
| 118 | Energy Storage | 69 | 1.6K | 99 | 196 |
| 119 | Information Science | 49 | 1.6K | 350 | 397 |
| 120 | Medicine | 89 | 1.6K | 2144 | 3243 |
| 121 | miniaturization | 58 | 1.6K | 292 | 543 |
| 122 | health planning | 66 | 1.5K | 179 | 180 |
| 123 | clay | 31 | 1.5K | 72 | 67 |
| 124 | Measurement | 78 | 1.5K | 56 | 75 |
| 125 | Control Theory | 62 | 1.5K | 249 | 262 |
| 126 | Optics | 168 | 1.5K | 602 | 892 |
| 126 | biopolymers | 61 | 1.5K | 146 | 208 |
| 128 | Metallurgy | 60 | 1.5K | 415 | 480 |
| 129 | carbon monoxide | 36 | 1.5K | 2 | 5 |
| 130 | Physical Chemistry | 75 | 1.5K | 322 | 549 |
| 131 | Hydrodynamics | 61 | 1.5K | 33 | 74 |
| 132 | Systems Engineering | 89 | 1.4K | 156 | 280 |
| 133 | Fractals | 75 | 1.4K | 42 | 70 |
| 134 | Mathematical Physics | 102 | 1.4K | 392 | 545 |
| 135 | Engineering Mathematics | 194 | 1.4K | 62 | 233 |
| 136 | energy development | 129 | 1.4K | 7 | 205 |
| 137 | Microelectronics | 42 | 1.3K | 415 | 537 |
| 138 | Greenhouse gases | 34 | 1.3K | 32 | 45 |
| 139 | Production Engineering | 71 | 1.3K | 208 | 250 |
| 140 | Natural history | 12 | 1.3K | 1990 | 2610 |
| 141 | Paleogeography | 41 | 1.3K | 140 | 197 |
| 142 | Astronomy | 35 | 1.3K | 993 | 987 |
| 143 | vibration | 50 | 1.2K | 146 | 175 |
| 144 | Paleoclimatology | 38 | 1.2K | 209 | 259 |
| 144 | Paleoecology | 38 | 1.2K | 194 | 218 |
| 146 | Industrial Microbiology | 19 | 1.2K | 625 | 506 |
| 147 | Microbial Ecology | 19 | 1.1K | 863 | 841 |
| 148 | Numerical Analysis | 88 | 1.1K | 221 | 352 |
| 149 | Crystal growth | 36 | 1.1K | 142 | 130 |
| 150 | Detectors | 84 | 1.1K | 74 | 181 |
| 151 | Sustainable Development | 36 | 1.1K | 277 | 417 |
| 152 | Ultrasonics | 46 | 1.1K | 129 | 218 |
| 153 | Structural dynamics | 30 | 1.1K | 231 | 247 |
| 154 | Oceanography | 65 | 1.1K | 329 | 545 |
| 155 | mathematical analysis | 109 | 1.0K | 238 | 362 |
| 156 | Sonochemistry | 38 | 1.0K | 32 | 95 |
| 157 | Spectrum analysis | 65 | 1.0K | 885 | 1322 |
| 158 | Nuclear Physics | 80 | 1.0K | 1150 | 1442 |
| 159 | Combustion | 75 | 1.0K | 129 | 279 |
| 160 | Hydrocarbons | 46 | 1.0K | 8 | 3 |
| 161 | Planets | 36 | 999 | 490 | 636 |
| 162 | Nanochemistry | 64 | 988 | 45 | 75 |
| 163 | Medical Laboratory Science | 12 | 969 | 1094 | 726 |
| 164 | water supply | 33 | 923 | 204 | 291 |
| 165 | Nonlinear functional analysis | 37 | 903 | 147 | 125 |
| 166 | Mineral resources | 11 | 876 | 137 | 59 |
| 167 | human behavior | 2 | 873 | 2842 | 959 |
| 167 | Behavior | 2 | 873 | 3581 | 1183 |
| 169 | concrete | 18 | 871 | 315 | 338 |
| 170 | Thermodynamics | 94 | 862 | 39 | 104 |
| 171 | Operations Research | 23 | 850 | 760 | 612 |
| 172 | Mobile Computing | 39 | 843 | 169 | 227 |
| 173 | Telecommunication | 62 | 826 | 457 | 792 |
| 174 | Surface-Active Agents | 18 | 822 | 235 | 228 |
| 174 | Surface properties | 18 | 822 | 266 | 256 |
| 176 | Sedimentary rocks | 67 | 811 | 8 | 110 |
| 177 | Recycling | 22 | 799 | 87 | 214 |
| 178 | Solar Energy | 17 | 781 | 565 | 511 |
| 179 | Petroleum | 63 | 776 | 14 | 10 |
| 180 | Magnetic Resonance Spectroscopy | 47 | 767 | 207 | 287 |
| 181 | Mechatronics | 35 | 765 | 123 | 178 |
| 181 | Multiphase Flow | 33 | 765 | 27 | 82 |
| 183 | nuclear magnetic resonance | 46 | 751 | 205 | 287 |
| 184 | Multimedia Systems | 55 | 750 | 181 | 317 |
| 185 | Bioinformatics | 31 | 749 | 544 | 754 |
| 186 | Remote Sensing | 36 | 714 | 217 | 205 |
| 187 | Nondestructive testing | 38 | 707 | 59 | 95 |
| 188 | Catalysts | 49 | 702 | 31 | 116 |
| 189 | Information Technology | 34 | 695 | 510 | 712 |
| 190 | Geodynamics | 30 | 685 | 210 | 335 |
| 191 | Meteorites | 10 | 682 | 520 | 477 |
| 192 | Computer Graphics | 55 | 678 | 256 | 520 |
| 193 | lasers | 50 | 671 | 359 | 519 |
| 194 | Computational Biology | 48 | 670 | 509 | 1007 |
| 195 | Fuzzy systems | 30 | 667 | 247 | 187 |
| 196 | Granular materials | 29 | 660 | 47 | 68 |
| 197 | Computer Science | 40 | 656 | 320 | 346 |
| 198 | Process Control | 27 | 649 | 123 | 367 |
| 199 | Hazardous waste | 16 | 645 | 234 | 354 |
| 200 | United States | 33 | 642 | 1431 | 1605 |
| 201 | Organic Chemistry | 26 | 637 | 1256 | 1285 |
| 202 | Telecommunication Systems | 28 | 635 | 343 | 295 |
| 203 | biocatalysis | 3 | 630 | 177 | 184 |
| 203 | Homogeneous catalysis | 3 | 630 | 177 | 184 |
| 203 | Heterogeneous catalysis | 3 | 630 | 177 | 184 |
| 206 | supercritical fluids | 14 | 627 | 120 | 99 |
| 207 | Biosensors | 15 | 618 | 487 | 635 |
| 208 | Cement | 8 | 594 | 320 | 299 |
| 209 | environmental indicators | 15 | 591 | 329 | 376 |
| 210 | software | 6 | 586 | 666 | 295 |
| 211 | radioactive waste | 12 | 584 | 254 | 362 |
| 211 | industrial waste | 12 | 584 | 272 | 364 |
| 213 | Investment analysis | 6 | 583 | 468 | 134 |
| 214 | Nervous system | 13 | 581 | 1145 | 1132 |
| 215 | Chemical processes | 40 | 578 | 45 | 105 |
| 216 | Pharmacology | 2 | 577 | 6125 | 2440 |
| 217 | Intelligent Transportation Systems | 24 | 570 | 261 | 413 |
| 218 | Natural resources | 23 | 562 | 158 | 254 |
| 218 | Australia | 53 | 562 | 216 | 427 |
| 220 | Robotics | 14 | 559 | 770 | 576 |
| 221 | Thermochemistry | 33 | 553 | 70 | 115 |
| 221 | Computational Intelligence | 51 | 553 | 48 | 141 |
| 223 | Solid State Chemistry | 44 | 545 | 569 | 845 |
| 224 | Production Management | 7 | 538 | 673 | 574 |
| 225 | Electrophoresis | 20 | 537 | 531 | 563 |
| 226 | Systems Analysis | 17 | 519 | 310 | 228 |
| 227 | Plastics | 22 | 514 | 497 | 468 |
| 228 | Biophysics | 33 | 513 | 1982 | 2759 |
| 228 | Hydraulic Engineering | 19 | 513 | 403 | 358 |
| 228 | Dynamics | 50 | 513 | 196 | 364 |
| 231 | Structural Engineering | 36 | 495 | 422 | 631 |
| 232 | Marine Biology | 24 | 487 | 928 | 1161 |
| 233 | Sedimentology | 27 | 481 | 73 | 210 |
| 234 | Atmospheric Physics | 11 | 473 | 816 | 751 |
| 235 | Naval Architecture | 40 | 471 | 46 | 56 |
| 236 | Solid State Physics | 52 | 470 | 1142 | 1684 |
| 237 | Calorimetry | 36 | 467 | 125 | 210 |
| 237 | Thermal analysis | 36 | 467 | 125 | 210 |
| 239 | Nonlinear Dynamics | 19 | 460 | 921 | 905 |
| 240 | Solitons | 23 | 454 | 189 | 285 |
| 240 | Chaos | 23 | 454 | 189 | 285 |
| 242 | Molecular Spectroscopy | 34 | 439 | 323 | 584 |
| 243 | solar power | 8 | 436 | 435 | 385 |
| 243 | solar cells | 8 | 436 | 495 | 444 |
| 245 | Toxicology | 11 | 433 | 2736 | 2467 |
| 245 | management | 15 | 433 | 1573 | 1575 |
| 247 | Astrophysics | 17 | 425 | 1504 | 1518 |
| 248 | Organometallic chemistry | 33 | 423 | 410 | 605 |
| 249 | Analytical Biochemistry | 21 | 416 | 497 | 711 |
| 250 | Marine Pollution | 15 | 410 | 437 | 594 |
| 250 | Chromatography | 19 | 410 | 543 | 567 |
| 250 | Chromatographic analysis | 19 | 410 | 673 | 631 |
| 253 | Electrical Engineering | 59 | 403 | 799 | 1176 |
| 253 | Environmental Geology | 20 | 403 | 503 | 747 |
| 255 | Wireless Communication | 13 | 401 | 85 | 40 |
| 256 | environmental exposure | 17 | 396 | 634 | 870 |
| 257 | Bioelectronics | 6 | 391 | 755 | 762 |
| 258 | Geodesy | 15 | 390 | 188 | 177 |
| 258 | Metallography | 14 | 390 | 283 | 281 |
| 260 | Transportation | 14 | 388 | 722 | 718 |
| 261 | Humanities | 22 | 385 | 416 | 259 |
| 262 | Petrology | 27 | 383 | 316 | 519 |
| 263 | Social Sciences | 21 | 379 | 1313 | 1113 |
| 263 | Mineralogy | 30 | 379 | 412 | 627 |
| 265 | Chemical analysis | 9 | 362 | 634 | 494 |
| 266 | Evolutionary Computation | 7 | 355 | 221 | 292 |
| 267 | Tunneling | 11 | 348 | 125 | 181 |
| 267 | underground construction | 11 | 348 | 125 | 181 |
| 269 | Environmental Microbiology | 6 | 346 | 958 | 891 |
| 269 | Computer Vision | 21 | 346 | 312 | 648 |
| 271 | Seismology | 27 | 337 | 117 | 203 |
| 272 | Radiation | 28 | 333 | 566 | 889 |
| 273 | Bioremediation | 14 | 329 | 150 | 329 |
| 274 | Superconductors | 26 | 328 | 290 | 317 |
| 275 | Metallic Glasses | 10 | 325 | 198 | 194 |
| 276 | Information Systems | 11 | 323 | 629 | 604 |
| 277 | Earthquake Engineering | 14 | 317 | 596 | 697 |
| 278 | Ceramic materials | 18 | 312 | 422 | 578 |
| 279 | Computational Complexity | 24 | 309 | 151 | 223 |
| 280 | Developing countries | 17 | 308 | 796 | 1072 |
| 281 | indoor air pollution | 13 | 298 | 98 | 176 |
| 281 | Ventilation | 13 | 298 | 157 | 203 |
| 281 | Sick building syndrome | 13 | 298 | 98 | 176 |
| 284 | Civil Engineering | 31 | 297 | 452 | 527 |
| 285 | Functional Analysis | 14 | 293 | 580 | 494 |
| 285 | Molecular structure | 29 | 293 | 612 | 1299 |
| 287 | Genomics | 14 | 291 | 1559 | 2021 |
| 288 | Photonics | 27 | 289 | 658 | 1230 |
| 289 | Earthquakes | 26 | 283 | 80 | 150 |
| 290 | Semiconductors | 22 | 281 | 646 | 840 |
| 291 | Electrochemical Analysis | 17 | 277 | 562 | 779 |
| 292 | Biodegradation | 9 | 275 | 273 | 370 |
| 293 | Social Change | 6 | 272 | 631 | 717 |
| 294 | Human-Computer Interaction | 16 | 270 | 525 | 811 |
| 294 | Lightweight concrete | 8 | 270 | 192 | 364 |
| 296 | plasticity | 2 | 267 | 378 | 266 |
| 297 | Mechanics | 33 | 260 | 241 | 489 |
| 298 | Cartography | 1 | 258 | 1046 | 78 |
| 299 | Radioisotopes | 24 | 255 | 282 | 411 |
| 300 | Plate Tectonics | 54 | 252 | 10 | 102 |
| 300 | Condensed Matter | 38 | 252 | 1227 | 1911 |
| 302 | Chromosome mapping | 9 | 251 | 1055 | 1320 |
| 302 | gene mapping | 9 | 251 | 1166 | 1529 |
| 304 | Water quality management | 19 | 244 | 634 | 922 |
| 305 | Computational Fluid Dynamics | 22 | 243 | 128 | 275 |
| 306 | Nonlinear systems | 7 | 241 | 358 | 257 |
| 307 | sustainability | 9 | 238 | 381 | 680 |
| 308 | sedimentary basins | 21 | 237 | 21 | 122 |
| 309 | Waste management | 19 | 233 | 430 | 669 |
| 310 | Drug design | 3 | 229 | 1838 | 1100 |
| 311 | Friction | 8 | 225 | 29 | 55 |
| 311 | Bioorganic chemistry | 12 | 225 | 1545 | 1962 |
| 313 | Cellulose | 8 | 220 | 287 | 368 |
| 314 | Water Purification | 16 | 217 | 385 | 565 |
| 315 | Smart Materials | 12 | 216 | 278 | 376 |
| 316 | Product Design | 6 | 214 | 338 | 202 |
| 317 | Geomorphology | 5 | 213 | 1082 | 1032 |
| 318 | Soil Science | 4 | 212 | 1679 | 1309 |
| 318 | Intelligent Control Systems | 22 | 212 | 185 | 302 |
| 320 | Medical Technology | 7 | 211 | 1128 | 1077 |
| 321 | Fossil fuels | 68 | 209 | 1 | 2 |
| 321 | multimedia | 12 | 209 | 202 | 335 |
| 321 | Interactive multimedia | 12 | 209 | 238 | 357 |
| 324 | Solutions | 25 | 208 | 24 | 113 |
| 325 | Ceramics | 8 | 205 | 952 | 842 |
| 325 | Cognitive Science | 11 | 205 | 684 | 1028 |
| 327 | Microbial Biotechnology | 7 | 203 | 517 | 577 |
| 327 | Glass | 6 | 203 | 829 | 737 |
| 327 | pottery | 6 | 203 | 780 | 726 |
| 330 | carbonate rocks | 37 | 201 | 5 | 14 |
| 331 | Photochemistry | 25 | 198 | 443 | 1124 |
| 331 | Photobiology | 25 | 198 | 257 | 871 |
| 333 | Data Mining | 8 | 194 | 888 | 1165 |
| 334 | Ore deposits | 11 | 192 | 230 | 371 |
| 335 | Telecommunications | 3 | 191 | 818 | 252 |
| 335 | Organometallic compounds | 13 | 191 | 578 | 776 |
| 337 | Agricultural Chemistry | 6 | 190 | 1746 | 1712 |
| 337 | infrared radiation | 13 | 190 | 163 | 189 |
| 337 | Green Technology | 7 | 190 | 147 | 129 |
| 340 | Agricultural Engineering | 3 | 189 | 528 | 273 |
| 340 | Materials Engineering | 18 | 189 | 121 | 232 |
| 342 | Database Management | 5 | 187 | 637 | 535 |
| 342 | pigments | 9 | 187 | 397 | 484 |
| 344 | Atmospheric Chemistry | 4 | 182 | 768 | 834 |
| 345 | big data | 2 | 180 | 800 | 286 |
| 346 | Swarm Intelligence | 4 | 179 | 164 | 183 |
| 347 | Cloud Computing | 12 | 178 | 77 | 167 |
| 348 | Genetic algorithms | 3 | 176 | 304 | 348 |
| 349 | machinery | 14 | 174 | 234 | 378 |
| 350 | reasoning | 1 | 171 | 730 | 192 |
| 351 | Logistics | 7 | 169 | 256 | 397 |
| 352 | Economics | 19 | 168 | 1918 | 2363 |
| 353 | Molecular Genetics | 1 | 167 | 2720 | 1642 |
| 353 | Population Genetics | 1 | 167 | 1873 | 1078 |
| 353 | Energy Harvesting | 5 | 167 | 363 | 567 |
| 353 | Molecular ecology | 1 | 167 | 1668 | 1115 |
| 357 | Databases | 1 | 164 | 622 | 272 |
| 357 | Neuroplasticity | 4 | 164 | 361 | 272 |
| 359 | soil microbiology | 5 | 163 | 1128 | 1543 |
| 360 | Electromagnetism | 16 | 162 | 367 | 603 |
| 361 | Soil dynamics | 5 | 161 | 353 | 332 |
| 362 | Geographic information systems | 8 | 157 | 611 | 554 |
| 362 | Biometrics | 3 | 157 | 1049 | 717 |
| 364 | Chemical kinetics | 25 | 156 | 100 | 230 |
| 365 | Environmental Law | 2 | 155 | 1351 | 1263 |
| 365 | Rheology | 7 | 155 | 291 | 297 |
| 367 | Immunology | 8 | 154 | 2494 | 3323 |
| 368 | Computer-Aided Design | 10 | 153 | 583 | 778 |
| 368 | Hydraulic structures | 37 | 153 | 4 | 15 |
| 370 | data collection | 4 | 152 | 867 | 955 |
| 370 | city planning | 5 | 152 | 1274 | 1047 |
| 372 | natural disasters | 10 | 149 | 600 | 1043 |
| 373 | Information Theory | 25 | 146 | 418 | 1007 |
| 373 | global environmental change | 4 | 146 | 706 | 855 |
| 373 | Iron | 7 | 146 | 203 | 186 |
| 373 | Japan | 12 | 146 | 904 | 1133 |
| 373 | enzymes | 5 | 146 | 1178 | 1303 |
| 378 | Combinatorial chemistry | 7 | 145 | 563 | 776 |
| 379 | Biomechanics | 11 | 142 | 677 | 1075 |
| 379 | plasma spraying | 9 | 142 | 91 | 151 |
| 381 | biofuels | 2 | 138 | 372 | 415 |
| 382 | Informatics | 14 | 137 | 287 | 687 |
| 383 | Ecological Engineering | 4 | 136 | 553 | 663 |
| 384 | Highway Engineering | 4 | 135 | 356 | 237 |
| 385 | Differential Equations | 7 | 134 | 627 | 556 |
| 386 | Quantum electronics | 13 | 133 | 784 | 1141 |
| 387 | Paleontology | 7 | 132 | 880 | 893 |
| 388 | Cognitive neuroscience | 2 | 131 | 1101 | 894 |
| 388 | human development | 1 | 131 | 1272 | 683 |
| 390 | Entropy | 22 | 130 | 198 | 603 |
| 391 | Transport | 4 | 126 | 506 | 556 |
| 391 | Sea | 4 | 126 | 435 | 460 |
| 391 | Fishery resources | 4 | 126 | 498 | 496 |
| 391 | Fisheries | 4 | 126 | 1425 | 1284 |
| 395 | Nanomedicine | 1 | 125 | 486 | 232 |
| 395 | Environmental Toxicology | 6 | 125 | 1785 | 2421 |
| 395 | Biomass | 7 | 125 | 303 | 746 |
| 398 | Applied Mathematics | 40 | 124 | 63 | 216 |
| 398 | Probability | 2 | 124 | 728 | 466 |
| 398 | Risk Management | 2 | 124 | 908 | 534 |
| 398 | Financial management | 2 | 124 | 623 | 476 |
| 398 | Risk | 2 | 124 | 690 | 491 |
| 398 | biological monitoring | 6 | 124 | 302 | 444 |
| 398 | impact | 4 | 124 | 268 | 333 |
| 405 | Computational Chemistry | 2 | 122 | 856 | 587 |
| 405 | Earthquake prediction | 17 | 122 | 14 | 16 |
| 405 | Drug delivery systems | 1 | 122 | 2436 | 1552 |
| 408 | Mass Spectrometry | 13 | 119 | 557 | 967 |
| 409 | Pharmacognosy | 1 | 116 | 2831 | 1873 |
| 409 | Medicinal plants | 1 | 116 | 2361 | 1485 |
| 409 | pollutants | 5 | 116 | 1539 | 1950 |
| 409 | Environmental pollutants | 5 | 116 | 1865 | 2216 |
| 409 | Microorganisms | 4 | 116 | 911 | 1227 |
| 414 | synthesis | 7 | 115 | 660 | 570 |
| 415 | Geriatrics | 1 | 114 | 4469 | 2335 |
| 416 | Meteorology | 12 | 113 | 1132 | 2229 |
| 417 | Traffic Engineering | 3 | 112 | 416 | 409 |
| 417 | Microprocessors | 2 | 112 | 790 | 385 |
| 419 | Education | 5 | 110 | 3070 | 2302 |
| 420 | Agricultural Ecology | 2 | 109 | 1440 | 1301 |
| 421 | Marine Engineering | 30 | 108 | 37 | 96 |
| 421 | Structural design | 8 | 108 | 331 | 518 |
| 423 | Geobiology | 3 | 102 | 460 | 448 |
| 424 | Mycology | 5 | 101 | 1294 | 1507 |
| 424 | Africa | 13 | 101 | 637 | 963 |
| 424 | Middle East | 11 | 101 | 407 | 545 |
| 424 | Fungi | 5 | 101 | 826 | 1105 |
| 428 | Quality Control | 7 | 99 | 1147 | 1660 |
| 428 | Flexible electronics | 1 | 99 | 158 | 110 |
| 430 | Statistics | 18 | 98 | 1137 | 1856 |
| 430 | Cryptography | 12 | 98 | 213 | 338 |
| 432 | Communication | 7 | 97 | 1361 | 1711 |
| 432 | Plant diseases | 3 | 97 | 1935 | 1649 |
| 434 | Adaptive control systems | 12 | 96 | 178 | 388 |
| 435 | food technology | 6 | 95 | 1804 | 2520 |
| 435 | Multiscale Modeling | 1 | 95 | 164 | 21 |
| 435 | hazard mitigation | 6 | 95 | 567 | 922 |
| 435 | commerce | 8 | 95 | 959 | 1295 |
| 435 | finance | 7 | 95 | 1549 | 1737 |
| 440 | Simulation Methods | 4 | 94 | 833 | 781 |
| 441 | Continental shelf | 3 | 93 | 382 | 422 |
| 442 | Health Services Research | 1 | 89 | 2909 | 1538 |
| 442 | Algorithms | 9 | 89 | 316 | 501 |
| 442 | Energy Consumption | 4 | 89 | 296 | 514 |
| 442 | Primary health care | 1 | 89 | 2935 | 1560 |
| 442 | Minerals | 4 | 89 | 635 | 738 |
| 447 | Software Engineering | 13 | 88 | 505 | 916 |
| 448 | Food additives | 3 | 86 | 1195 | 1361 |
| 449 | Teaching | 3 | 85 | 1727 | 1300 |
| 449 | Eastern Europe | 7 | 85 | 537 | 484 |
| 451 | Mining Geology | 2 | 84 | 110 | 64 |
| 451 | Marine Geophysics | 16 | 84 | 46 | 196 |
| 453 | Serology | 5 | 83 | 353 | 503 |
| 453 | Bacteriology | 5 | 83 | 1481 | 2231 |
| 455 | Nuclear Engineering | 7 | 81 | 1130 | 1243 |
| 455 | Educational Technology | 4 | 81 | 1351 | 1423 |
| 457 | Adhesion | 7 | 80 | 329 | 571 |
| 457 | adhesives | 7 | 80 | 355 | 576 |
| 459 | Food | 5 | 78 | 2542 | 3438 |
| 460 | Urban Policy | 1 | 77 | 1293 | 885 |
| 460 | Freezing | 6 | 77 | 206 | 243 |
| 462 | Environmental Geochemistry | 4 | 76 | 390 | 545 |
| 463 | Industrial Design | 4 | 75 | 208 | 256 |
| 463 | Boundary Value Problems | 18 | 75 | 208 | 630 |
| 463 | Optoelectronic devices | 8 | 75 | 497 | 628 |
| 463 | atmosphere | 7 | 75 | 447 | 912 |
| 467 | Protective coatings | 5 | 74 | 83 | 73 |
| 468 | Rock deformation | 3 | 73 | 208 | 261 |
| 468 | food handling | 2 | 73 | 1097 | 1160 |
| 470 | International Finance | 3 | 72 | 1557 | 1547 |
| 470 | hydrocolloids | 2 | 72 | 732 | 972 |
| 472 | biomedicine | 6 | 71 | 569 | 1061 |
| 473 | Geometry | 10 | 69 | 672 | 740 |
| 473 | Bioenergetics | 4 | 69 | 699 | 1067 |
| 473 | Production Planning | 1 | 69 | 536 | 381 |
| 473 | Nuclear Chemistry | 11 | 69 | 528 | 865 |
| 473 | Radiochemistry | 11 | 69 | 477 | 782 |
| 473 | Production Control | 1 | 69 | 521 | 380 |
| 479 | Biostatistics | 12 | 68 | 16 | 55 |
| 480 | Imaging systems | 23 | 66 | 97 | 606 |
| 481 | Extreme environments | 3 | 65 | 225 | 390 |
| 482 | Visual Communication | 4 | 63 | 354 | 409 |
| 482 | Electronic Packaging | 5 | 63 | 177 | 269 |
| 482 | Image enhancement | 4 | 63 | 244 | 369 |
| 482 | Marine mineral resources | 12 | 63 | 35 | 111 |
| 482 | Seabed | 12 | 63 | 35 | 111 |
| 487 | Aerospace Engineering | 5 | 62 | 292 | 290 |
| 487 | Climatology | 6 | 62 | 1270 | 2014 |
| 487 | Physical organic chemistry | 10 | 62 | 796 | 1467 |
| 490 | Nutrition | 2 | 61 | 5006 | 4968 |
| 490 | Information Retrieval | 5 | 61 | 335 | 605 |
| 492 | Systems Biology | 4 | 59 | 1360 | 1982 |
| 492 | Parallel Processing | 4 | 59 | 407 | 618 |
| 492 | Supramolecular chemistry | 1 | 59 | 502 | 191 |
| 492 | Business | 1 | 59 | 3274 | 2284 |
| 496 | Public Administration | 6 | 57 | 977 | 1176 |
| 496 | Medical Physics | 2 | 57 | 2059 | 1970 |
| 496 | Combinatorial optimization | 2 | 57 | 646 | 331 |
| 496 | Land use | 2 | 57 | 1413 | 1512 |
| 496 | Water quality | 6 | 57 | 65 | 262 |
| 496 | Water chemistry | 6 | 57 | 103 | 376 |
| 502 | Embedded Systems | 1 | 56 | 376 | 217 |
| 502 | Quantum Optics | 8 | 56 | 531 | 893 |
| 502 | Atomic spectroscopy | 8 | 56 | 707 | 1215 |
| 502 | Laser Spectroscopy | 8 | 56 | 491 | 862 |
| 506 | Computer Engineering | 10 | 55 | 373 | 1062 |
| 506 | Neurophysiology | 3 | 55 | 2683 | 3419 |
| 506 | electric vehicles | 4 | 55 | 261 | 415 |
| 506 | Technological Innovations | 3 | 55 | 1077 | 1259 |
| 510 | Quantum theory | 3 | 54 | 901 | 933 |
| 511 | Regional Planning | 3 | 52 | 1527 | 1608 |
| 511 | Thin Films | 3 | 52 | 624 | 577 |
| 511 | Molecules | 8 | 52 | 910 | 1381 |
| 514 | Software Maintenance | 4 | 51 | 129 | 167 |
| 514 | Navigation | 7 | 51 | 222 | 365 |
| 516 | Medical Microbiology | 1 | 50 | 3408 | 3212 |
| 517 | Sustainable Architecture | 5 | 49 | 68 | 118 |
| 517 | Insects | 1 | 49 | 2209 | 1528 |
| 517 | Entomology | 1 | 49 | 3322 | 2252 |
| 520 | Clinical Chemistry | 2 | 48 | 3441 | 3795 |
| 520 | Crystallography | 6 | 48 | 1265 | 1311 |
| 520 | textile fibers | 4 | 48 | 336 | 425 |
| 523 | Marine resources | 4 | 47 | 550 | 967 |
| 524 | Histology | 2 | 46 | 2208 | 2545 |
| 524 | Microwaves | 6 | 46 | 1086 | 1463 |
| 526 | Economic History | 6 | 45 | 2705 | 3161 |
| 526 | Plasma chemistry | 4 | 45 | 313 | 529 |
| 526 | Quantum Gravity | 8 | 45 | 1368 | 1907 |
| 526 | Ultrasound | 8 | 45 | 405 | 1028 |
| 526 | Nonlinear mechanics | 4 | 45 | 318 | 548 |
| 531 | Nanoelectronics | 4 | 44 | 753 | 869 |
| 531 | air quality management | 5 | 44 | 329 | 882 |
| 531 | Landslides | 1 | 44 | 482 | 518 |
| 531 | World Wide Web | 6 | 44 | 214 | 435 |
| 535 | Radiology | 2 | 43 | 1788 | 1607 |
| 535 | cosmic rays | 2 | 43 | 585 | 551 |
| 535 | Luminescence | 5 | 43 | 1068 | 1549 |
| 535 | Roads | 2 | 43 | 902 | 727 |
| 535 | Electromagnetic fields | 7 | 43 | 151 | 218 |
| 540 | Neuropsychology | 1 | 42 | 3304 | 2866 |
| 540 | emergency management | 5 | 42 | 593 | 1217 |
| 540 | Antenna Arrays | 5 | 42 | 413 | 740 |
| 540 | Risk assessment | 5 | 42 | 410 | 799 |
| 540 | Brain | 1 | 42 | 3597 | 3360 |
| 540 | optical devices | 2 | 42 | 656 | 622 |
| 540 | Psychophysiology | 1 | 42 | 3669 | 3526 |
| 540 | Cognition | 1 | 42 | 2339 | 2011 |
| 548 | Marine Biotechnology | 3 | 41 | 218 | 465 |
| 548 | Statistical Mechanics | 10 | 41 | 556 | 948 |
| 548 | Coastal zone management | 3 | 41 | 649 | 1006 |
| 551 | Computer Architecture | 1 | 40 | 943 | 583 |
| 551 | Fractional Calculus | 1 | 40 | 307 | 200 |
| 553 | Neurology | 4 | 39 | 4546 | 6537 |
| 553 | Metrology | 3 | 39 | 98 | 80 |
| 555 | scientific societies | 1 | 38 | 1306 | 1144 |
| 556 | Diagnostic Imaging | 21 | 37 | 658 | 2685 |
| 556 | Sound | 7 | 37 | 627 | 1249 |
| 556 | Radio | 8 | 37 | 993 | 2097 |
| 559 | Convergence | 1 | 36 | 109 | 175 |
| 560 | Photography | 45 | 35 | 580 | 1259 |
| 560 | Pharmaceutical Technology | 2 | 35 | 1907 | 2303 |
| 560 | Electromagnetic compatibility | 1 | 35 | 713 | 551 |
| 560 | bioclimatology | 2 | 35 | 1161 | 1432 |
| 560 | Ubiquitous computing | 1 | 35 | 618 | 242 |
| 560 | catalytic activity | 2 | 35 | 764 | 998 |
| 566 | Environmental Economics | 5 | 34 | 253 | 666 |
| 566 | economic policy | 2 | 34 | 2905 | 2454 |
| 566 | Radio wave propagation | 6 | 34 | 616 | 1008 |
| 566 | Soil ecology | 2 | 34 | 929 | 1308 |
| 570 | Landscape Ecology | 1 | 33 | 776 | 876 |
| 570 | Optical Communications | 2 | 33 | 1036 | 1020 |
| 570 | Quantum Chemistry | 5 | 33 | 677 | 944 |
| 570 | Strategic planning | 3 | 33 | 775 | 1114 |
| 570 | neuronal plasticity | 3 | 33 | 315 | 651 |
| 570 | visualization | 6 | 33 | 1108 | 1380 |
| 576 | Bifurcation Theory | 4 | 32 | 572 | 796 |
| 576 | probabilities | 9 | 32 | 768 | 1214 |
| 576 | Muscle contraction | 3 | 32 | 318 | 272 |
| 576 | proteins | 6 | 32 | 1601 | 2935 |
| 580 | Geotechnical Engineering | 4 | 31 | 591 | 943 |
| 580 | Plasma polymerization | 2 | 31 | 327 | 429 |
| 580 | economic analysis | 1 | 31 | 462 | 395 |
| 580 | Microstructure | 4 | 31 | 725 | 1112 |
| 580 | genome | 2 | 31 | 1930 | 2700 |
| 580 | Immune system | 1 | 31 | 1683 | 1868 |
| 580 | Immunity | 1 | 31 | 2823 | 3249 |
| 580 | motor skills | 1 | 31 | 398 | 317 |
| 588 | Nuclear Energy | 5 | 30 | 854 | 1239 |
| 588 | Functional equations | 2 | 30 | 272 | 194 |
| 588 | Erosion | 2 | 30 | 101 | 250 |
| 588 | marketing | 2 | 30 | 2127 | 2410 |
| 588 | forest policy | 1 | 30 | 639 | 637 |
| 588 | freshwater biology | 3 | 30 | 973 | 1434 |
| 588 | Agriculture | 3 | 30 | 2382 | 3142 |
| 595 | Econometrics | 2 | 29 | 1610 | 1585 |
| 595 | Biological Systems | 2 | 29 | 1041 | 1210 |
| 595 | Corporate governance | 1 | 29 | 1035 | 1018 |
| 595 | Cheminformatics | 3 | 29 | 329 | 701 |
| 599 | Chemical Oceanography | 1 | 28 | 467 | 597 |
| 599 | Oxidative stress | 2 | 28 | 1512 | 2327 |
| 599 | Cellular senescence | 2 | 28 | 1050 | 1732 |
| 599 | Futures | 1 | 28 | 558 | 486 |
| 603 | soil management | 1 | 27 | 925 | 1070 |
| 603 | Raman spectroscopy | 3 | 27 | 822 | 1357 |
| 603 | Building | 5 | 27 | 560 | 1015 |
| 603 | Microscopy | 4 | 27 | 1445 | 2079 |
| 603 | tillage | 1 | 27 | 707 | 914 |
| 608 | Paleobiology | 3 | 26 | 377 | 464 |
| 608 | Bioinorganic chemistry | 3 | 26 | 1402 | 2095 |
| 608 | Ultrasonic Imaging | 3 | 26 | 513 | 911 |
| 608 | Detergents | 9 | 26 | 9 | 53 |
| 612 | Transportation Engineering | 2 | 25 | 627 | 795 |
| 612 | Physical Geography | 2 | 25 | 732 | 880 |
| 612 | Radiography | 3 | 25 | 792 | 1514 |
| 612 | Nuclear Fusion | 1 | 25 | 891 | 728 |
| 612 | micromechanics | 2 | 25 | 671 | 927 |
| 612 | structural stability | 5 | 25 | 351 | 815 |
| 612 | Cyberterrorism | 2 | 25 | 41 | 163 |
| 612 | fusion reactors | 1 | 25 | 733 | 539 |
| 620 | Sociology | 4 | 24 | 2709 | 4259 |
| 620 | Mental Health | 2 | 24 | 2016 | 2528 |
| 620 | Computational Linguistics | 7 | 24 | 256 | 737 |
| 623 | Cytology | 2 | 23 | 4696 | 6104 |
| 623 | Phytochemistry | 2 | 23 | 411 | 720 |
| 623 | Expert Systems | 4 | 23 | 96 | 408 |
| 623 | Phytoremediation | 2 | 23 | 411 | 720 |
| 623 | environmental remediation | 2 | 23 | 509 | 824 |
| 623 | Bioreactors | 2 | 23 | 411 | 720 |
| 623 | Ferroelectricity | 8 | 23 | 660 | 1288 |
| 623 | Group decision making | 1 | 23 | 769 | 767 |
| 623 | protein | 4 | 23 | 1109 | 1928 |
| 623 | nuclear power | 4 | 23 | 401 | 586 |
| 623 | Enzyme | 2 | 23 | 644 | 1162 |
| 623 | Urban Areas | 1 | 23 | 444 | 423 |
| 635 | Child | 1 | 22 | 3690 | 3529 |
| 635 | Mental Disorders | 1 | 22 | 4541 | 4746 |
| 635 | Food service management | 1 | 22 | 655 | 899 |
| 635 | starch | 1 | 22 | 614 | 628 |
| 635 | Medical innovations | 2 | 22 | 1288 | 2513 |
| 635 | Adolescent | 1 | 22 | 3305 | 3147 |
| 635 | biomimicry | 2 | 22 | 186 | 369 |
| 642 | Adsorption | 2 | 21 | 267 | 452 |
| 642 | Welding | 2 | 21 | 398 | 346 |
| 642 | Oxidation | 2 | 21 | 196 | 341 |
| 645 | Optoelectronics | 4 | 20 | 471 | 783 |
| 645 | Avionics | 1 | 20 | 328 | 313 |
| 645 | Terahertz Technology | 1 | 20 | 323 | 382 |
| 645 | Advertising | 1 | 20 | 617 | 748 |
| 645 | electrocatalysis | 1 | 20 | 227 | 287 |
| 645 | Decision making | 4 | 20 | 1304 | 2566 |
| 645 | civil service | 1 | 20 | 618 | 599 |
| 645 | Philippines | 1 | 20 | 264 | 219 |
| 653 | Ergonomics | 2 | 19 | 1203 | 1561 |
| 653 | Ion Exchange | 2 | 19 | 169 | 248 |
| 653 | Cognitive Radio Networks | 1 | 19 | 392 | 409 |
| 653 | Climate change | 2 | 19 | 1259 | 2266 |
| 653 | Fixed Point Theory | 1 | 19 | 585 | 367 |
| 653 | Global warming | 7 | 19 | 23 | 317 |
| 653 | Finite Element Method | 1 | 19 | 532 | 595 |
| 653 | Solvent extraction | 2 | 19 | 169 | 248 |
| 653 | color | 1 | 19 | 504 | 501 |
| 653 | Structure-activity relationship | 2 | 19 | 590 | 782 |
| 653 | brain mapping | 1 | 19 | 960 | 1252 |
| 653 | Radio frequency | 5 | 19 | 417 | 1032 |
| 665 | Environmental Science | 1 | 18 | 54 | 90 |
| 665 | Systems Theory | 4 | 18 | 507 | 945 |
| 665 | Noise | 1 | 18 | 330 | 247 |
| 665 | nucleic acids | 1 | 18 | 2542 | 3050 |
| 665 | DNS | 1 | 18 | 992 | 1218 |
| 665 | peptides | 3 | 18 | 972 | 1631 |
| 665 | Radio waves | 3 | 18 | 950 | 1547 |
| 665 | Recombinant DNA | 1 | 18 | 2467 | 2806 |
| 665 | DNA | 1 | 18 | 1165 | 1293 |
| 665 | silicon | 2 | 18 | 475 | 675 |
| 665 | Genes | 1 | 18 | 1921 | 2174 |
| 676 | Probiotics | 1 | 17 | 386 | 551 |
| 676 | East Asia | 3 | 17 | 663 | 1046 |
| 676 | Mountains | 1 | 17 | 788 | 738 |
| 679 | Organizational change | 2 | 16 | 876 | 1308 |
| 679 | Soil biology | 1 | 16 | 1345 | 1760 |
| 679 | Pesticides | 1 | 16 | 1199 | 1377 |
| 679 | nuclear magnetic resonance spectroscopy | 1 | 16 | 1151 | 1160 |
| 679 | biological factors | 1 | 16 | 3039 | 3431 |
| 679 | NMR | 1 | 16 | 898 | 898 |
| 679 | magnetic resonance | 1 | 16 | 927 | 923 |
| 686 | Photogrammetry | 5 | 15 | 629 | 951 |
| 686 | Housing | 1 | 15 | 808 | 1049 |
| 686 | Chemical structure | 1 | 15 | 1030 | 937 |
| 686 | Egypt | 1 | 15 | 1036 | 1365 |
| 690 | Municipal Engineering | 2 | 14 | 492 | 1006 |
| 690 | Change management | 1 | 14 | 225 | 249 |
| 690 | food contamination | 1 | 14 | 1833 | 2063 |
| 693 | Psychiatry | 1 | 13 | 6073 | 6845 |
| 693 | Psychology | 3 | 13 | 4827 | 7585 |
| 693 | Physiology | 1 | 13 | 5689 | 6640 |
| 693 | Kinetics | 2 | 13 | 654 | 1089 |
| 693 | Machining | 1 | 13 | 306 | 333 |
| 693 | Obesity | 1 | 13 | 3026 | 3969 |
| 693 | atmospheric models | 2 | 13 | 750 | 1274 |
| 693 | Mental illness | 1 | 13 | 3038 | 3769 |
| 693 | Chemical reactors | 3 | 13 | 49 | 114 |
| 693 | data protection | 1 | 13 | 1068 | 1137 |
| 703 | Project Management | 1 | 12 | 493 | 812 |
| 703 | Industrial Ecology | 3 | 12 | 166 | 600 |
| 703 | Integrated Circuits | 7 | 12 | 521 | 1220 |
| 703 | Energy metabolism | 2 | 12 | 692 | 1199 |
| 703 | Sensor Networks | 2 | 12 | 327 | 536 |
| 703 | Biodiversity conservation | 1 | 12 | 2469 | 3196 |
| 703 | Eutrophication | 1 | 12 | 1502 | 2213 |
| 703 | Hydraulic machinery | 1 | 12 | 282 | 286 |
| 703 | Gene expression regulation | 2 | 12 | 1246 | 2105 |
| 703 | Business Ethics | 2 | 12 | 1097 | 1874 |
| 703 | Genetic regulation | 2 | 12 | 1414 | 2356 |
| 703 | Health promotion | 1 | 12 | 2412 | 2924 |
| 703 | Communication in medicine | 1 | 12 | 890 | 1160 |
| 703 | cell membrane | 2 | 12 | 666 | 1136 |
| 717 | Graph Theory | 1 | 11 | 1246 | 1034 |
| 717 | Nanobiotechnology | 2 | 11 | 557 | 1418 |
| 717 | Quantum Communication | 1 | 11 | 346 | 501 |
| 717 | Histocompatibility Testing | 1 | 11 | 836 | 1178 |
| 717 | Aerosols | 2 | 11 | 675 | 1114 |
| 717 | Microbial Metabolism | 1 | 11 | 420 | 788 |
| 717 | Interfaces | 2 | 11 | 432 | 788 |
| 717 | clay minerals | 1 | 11 | 511 | 737 |
| 717 | Combinatorial analysis | 2 | 11 | 1240 | 1296 |
| 717 | Sun | 1 | 11 | 576 | 667 |
| 717 | Solar System | 1 | 11 | 1133 | 1342 |
| 728 | Surveying | 3 | 10 | 174 | 353 |
| 728 | Organizational learning | 2 | 10 | 659 | 1141 |
| 728 | Information visualization | 3 | 10 | 169 | 457 |
| 728 | Knowledge management | 1 | 10 | 1294 | 1300 |
| 728 | Electromagnetic waves | 2 | 10 | 406 | 680 |
| 728 | Turbulence | 2 | 10 | 309 | 554 |
| 728 | Shape Memory Alloys | 3 | 10 | 46 | 142 |
| 728 | elasticity | 3 | 10 | 215 | 470 |
| 728 | Shape memory polymers | 3 | 10 | 46 | 142 |
| 728 | Shape Memory Effect | 3 | 10 | 46 | 142 |
| 728 | bioluminescence | 1 | 10 | 720 | 846 |
| 728 | Alloys | 3 | 10 | 271 | 524 |
| 728 | Refractory materials | 4 | 10 | 117 | 225 |
| 728 | Investments | 1 | 10 | 1051 | 1256 |
| 742 | Structural optimization | 2 | 9 | 445 | 892 |
| 742 | Financial Engineering | 1 | 9 | 473 | 709 |
| 742 | Nanophotonics | 2 | 9 | 419 | 850 |
| 742 | ecological risk assessment | 2 | 9 | 352 | 870 |
| 742 | Safety management | 1 | 9 | 1180 | 1515 |
| 742 | Health Risk Assessment | 2 | 9 | 622 | 1266 |
| 742 | Sales management | 1 | 9 | 364 | 579 |
| 742 | selling | 1 | 9 | 364 | 579 |
| 750 | Occupational Health | 1 | 8 | 1923 | 2271 |
| 750 | industrial hygiene | 1 | 8 | 2025 | 2243 |
| 750 | Nonlinear Optics | 3 | 8 | 235 | 513 |
| 750 | Chemical safety | 1 | 8 | 99 | 93 |
| 750 | Bioprinting | 1 | 8 | 93 | 242 |
| 750 | Mobile Commerce | 3 | 8 | 313 | 733 |
| 750 | Library Science | 2 | 8 | 1575 | 1899 |
| 750 | Antarctica | 2 | 8 | 667 | 1118 |
| 750 | explosives | 2 | 8 | 305 | 476 |
| 750 | administrative agencies | 1 | 8 | 498 | 599 |
| 750 | Fluorescence | 1 | 8 | 895 | 1140 |
| 750 | Cerebral cortex | 1 | 8 | 1305 | 1822 |
| 762 | Planetary Science | 2 | 7 | 654 | 1145 |
| 762 | Global Health | 1 | 7 | 1993 | 2763 |
| 762 | Development Economics | 1 | 7 | 826 | 1166 |
| 762 | Pharmaceutical Chemistry | 2 | 7 | 4472 | 6517 |
| 762 | Politics | 1 | 7 | 970 | 849 |
| 762 | Molecular evolution | 1 | 7 | 2395 | 3391 |
| 762 | Fiber Optics | 3 | 7 | 1037 | 1954 |
| 762 | microwave communication systems | 1 | 7 | 723 | 939 |
| 762 | Korea | 2 | 7 | 477 | 815 |
| 762 | Vocational guidance | 1 | 7 | 1326 | 1804 |
| 762 | government | 1 | 7 | 1024 | 1035 |
| 762 | viruses | 1 | 7 | 2165 | 3083 |
| 762 | Protein engineering | 1 | 7 | 464 | 744 |
| 762 | Microwave devices | 1 | 7 | 818 | 1000 |
| 762 | Heterocyclic compounds | 1 | 7 | 1574 | 1880 |
| 762 | molecular design | 1 | 7 | 513 | 771 |
| 762 | Money | 1 | 7 | 614 | 931 |
| 762 | aerosol | 1 | 7 | 638 | 869 |
| 780 | Language Acquisition | 1 | 6 | 709 | 914 |
| 780 | Heterocyclic chemistry | 1 | 6 | 1028 | 1250 |
| 780 | Bibliometrics | 1 | 6 | 272 | 514 |
| 780 | Bilingualism | 1 | 6 | 370 | 597 |
| 780 | soil pollution | 2 | 6 | 770 | 1599 |
| 780 | Asymmetric synthesis | 1 | 6 | 306 | 449 |
| 780 | Shock Waves | 2 | 6 | 239 | 503 |
| 780 | Communism | 1 | 6 | 316 | 386 |
| 780 | ports | 1 | 6 | 520 | 776 |
| 780 | Latin America | 1 | 6 | 2006 | 1987 |
| 780 | geological modeling | 2 | 6 | 623 | 1254 |
| 780 | traffic safety | 1 | 6 | 561 | 885 |
| 780 | Europe | 1 | 6 | 5019 | 5879 |
| 780 | Biodiversity | 2 | 6 | 2746 | 4455 |
| 794 | Ethics | 1 | 5 | 1646 | 2237 |
| 794 | Discourse Analysis | 1 | 5 | 662 | 912 |
| 794 | Cell Biology | 1 | 5 | 5441 | 7118 |
| 794 | Human Rights | 1 | 5 | 1040 | 1338 |
| 794 | Operator theory | 1 | 5 | 737 | 799 |
| 794 | Liquid Crystals | 1 | 5 | 1412 | 1592 |
| 794 | Urban Transportation | 1 | 5 | 399 | 683 |
| 794 | Social Entrepreneurship | 1 | 5 | 281 | 630 |
| 794 | mycoses | 2 | 5 | 1021 | 2007 |
| 794 | construction industry | 1 | 5 | 300 | 481 |
| 804 | Geography | 1 | 4 | 3374 | 4331 |
| 804 | Public Health | 2 | 4 | 6949 | 11067 |
| 804 | Polymer Engineering | 2 | 4 | 139 | 515 |
| 804 | Distance Education | 1 | 4 | 941 | 1430 |
| 804 | Rural Development | 1 | 4 | 1009 | 1384 |
| 804 | Climate Change Mitigation | 1 | 4 | 96 | 235 |
| 804 | Food Preservation | 2 | 4 | 970 | 1852 |
| 804 | Tourism | 1 | 4 | 2407 | 3153 |
| 804 | Microfabrication | 2 | 4 | 541 | 1185 |
| 804 | Underwater acoustics | 1 | 4 | 147 | 225 |
| 804 | Feminist criticism | 1 | 4 | 251 | 391 |
| 804 | Nanomanufacturing | 2 | 4 | 166 | 318 |
| 804 | space environment | 1 | 4 | 367 | 557 |
| 804 | telecommunication in education | 1 | 4 | 157 | 257 |
| 804 | sea level | 1 | 4 | 96 | 235 |
| 804 | India | 2 | 4 | 2037 | 3218 |
| 804 | mathematical concepts | 1 | 4 | 765 | 1093 |
| 821 | Nonparametric Statistics | 1 | 3 | 344 | 508 |
| 821 | Economic Development | 1 | 3 | 2708 | 3650 |
| 821 | Digital electronics | 1 | 3 | 614 | 853 |
| 821 | Stochastic Processes | 1 | 3 | 1501 | 2079 |
| 821 | Pragmatics | 1 | 3 | 168 | 219 |
| 821 | diffusion | 1 | 3 | 670 | 651 |
| 821 | Coding Theory | 1 | 3 | 606 | 812 |
| 821 | Knot Theory | 2 | 3 | 282 | 452 |
| 821 | ozone | 1 | 3 | 282 | 590 |
| 821 | Nanotubes | 1 | 3 | 426 | 733 |
| 831 | Epidemiology | 1 | 2 | 5781 | 8043 |
| 831 | Algebra | 2 | 2 | 1708 | 2273 |
| 831 | Critical Care | 1 | 2 | 2368 | 3538 |
| 831 | Developmental Psychology | 1 | 2 | 1586 | 2415 |
| 831 | Social Psychology | 1 | 2 | 3103 | 4434 |
| 831 | Architectural Design | 1 | 2 | 830 | 1247 |
| 831 | Structural health monitoring | 1 | 2 | 384 | 699 |
| 831 | Multivariate Analysis | 1 | 2 | 803 | 1194 |
| 831 | Quality Assurance | 1 | 2 | 735 | 1407 |
| 831 | polar regions | 1 | 2 | 1120 | 1688 |
| 831 | personality | 1 | 2 | 2006 | 2928 |
| 831 | foods | 1 | 2 | 581 | 1132 |
| 831 | innovation | 1 | 2 | 1042 | 1680 |
| 831 | Social behavior | 1 | 2 | 1844 | 2776 |
| 831 | food industry | 1 | 2 | 1281 | 2116 |
| 831 | Seismometers | 1 | 2 | 36 | 51 |
| 831 | Seismometry | 1 | 2 | 36 | 51 |
| 848 | Linguistics | 2 | 1 | 1810 | 2918 |
| 848 | Cosmology | 3 | 1 | 1367 | 2347 |
| 848 | Applied Linguistics | 1 | 1 | 986 | 1405 |
| 848 | Machine Learning | 1 | 1 | 718 | 1164 |
| 848 | Particle Physics | 3 | 1 | 812 | 1580 |
| 848 | consumer behavior | 1 | 1 | 914 | 1549 |
| 848 | Corporate Social Responsibility | 1 | 1 | 583 | 1189 |
| 848 | environmental auditing | 1 | 1 | 602 | 1208 |
| 848 | Accreditation | 1 | 1 | 207 | 445 |
| 848 | Drying | 1 | 1 | 684 | 1174 |
| 848 | Infrared spectroscopy | 1 | 1 | 680 | 1276 |
| 848 | Environmental forensics | 1 | 1 | 178 | 444 |
| 848 | Russia | 1 | 1 | 461 | 498 |
| 848 | isomerism | 1 | 1 | 660 | 1136 |
| 848 | Language planning | 1 | 1 | 324 | 497 |
| 848 | optical pattern recognition | 1 | 1 | 310 | 576 |
| 848 | water reuse | 1 | 1 | 566 | 1194 |
| 848 | cardiac catheterization | 1 | 1 | 1191 | 1687 |
| 848 | Language spread | 1 | 1 | 33 | 85 |
| 848 | educational innovations | 1 | 1 | 930 | 1530 |
| 848 | Chirality | 1 | 1 | 660 | 1136 |
| 869 | Literature | 1 | 0 | 1444 | 1427 |
| 869 | Speech-Language Pathology | 1 | 0 | 555 | 1046 |
| 869 | Pharmacy | 1 | 0 | 3316 | 4943 |
| 869 | Early Childhood Education | 1 | 0 | 918 | 1492 |
| 869 | Neurobiology | 1 | 0 | 2477 | 3758 |
| 869 | Neurochemistry | 1 | 0 | 3231 | 4706 |
| 869 | Political Sociology | 1 | 0 | 753 | 1223 |
| 869 | Semantics | 1 | 0 | 464 | 838 |
| 869 | Social History | 1 | 0 | 885 | 1178 |
| 869 | p-adic numbers | 1 | 0 | 77 | 138 |
| 869 | Translation | 1 | 0 | 267 | 388 |
| 869 | soil conservation | 1 | 0 | 1396 | 2171 |
| 869 | Mass Media | 1 | 0 | 1544 | 2218 |
| 869 | philology | 2 | 0 | 887 | 1243 |
| 869 | Algebraic number theory | 1 | 0 | 77 | 138 |
| 869 | civilization | 2 | 0 | 1579 | 2399 |
| 869 | ecosystem | 1 | 0 | 2014 | 3236 |
| 869 | automatic speech recognition | 1 | 0 | 323 | 705 |
| 869 | Soviet Union | 1 | 0 | 1399 | 2143 |
| 869 | smart structures | 1 | 0 | 229 | 530 |
| 869 | international cooperation | 1 | 0 | 1107 | 1902 |
| 869 | applications | 1 | 0 | 129 | 297 |