| 1 | Polymers | 1,068 | 26.3K | 57 | 115 |
| 2 | Chemical Engineering | 634 | 22.0K | 130 | 174 |
| 3 | polymerization | 749 | 19.5K | 71 | 113 |
| 4 | Composite Materials | 429 | 18.7K | 49 | 67 |
| 5 | Materials | 554 | 14.8K | 299 | 455 |
| 6 | Mathematics | 499 | 14.5K | 337 | 117 |
| 7 | Biomedical Engineering | 398 | 12.4K | 149 | 190 |
| 8 | Biocompatible Materials | 258 | 12.0K | 242 | 282 |
| 9 | Colloids | 235 | 11.3K | 264 | 194 |
| 10 | Building Materials | 154 | 10.5K | 74 | 51 |
| 11 | Surface Chemistry | 218 | 10.5K | 285 | 191 |
| 12 | Physics | 437 | 10.3K | 770 | 1145 |
| 13 | Manufacturing Processes | 334 | 8.5K | 39 | 51 |
| 14 | Chemistry | 325 | 8.2K | 1012 | 1232 |
| 15 | Renewable Energy Sources | 164 | 8.1K | 73 | 181 |
| 16 | Electrical Engineering | 343 | 8.0K | 95 | 68 |
| 17 | Mechanical Engineering | 417 | 7.9K | 25 | 30 |
| 18 | Artificial Intelligence | 260 | 7.5K | 116 | 203 |
| 19 | Plastics | 321 | 7.1K | 5 | 12 |
| 20 | Biochemical Engineering | 100 | 6.3K | 400 | 399 |
| 21 | Materials Science | 230 | 6.3K | 351 | 512 |
| 22 | Energy Policy | 179 | 6.3K | 85 | 161 |
| 23 | Biochemistry | 107 | 6.0K | 1624 | 1191 |
| 24 | health planning | 153 | 5.8K | 43 | 22 |
| 25 | Medicine | 161 | 5.8K | 1228 | 1164 |
| 26 | Production Engineering | 209 | 5.8K | 50 | 31 |
| 27 | Petroleum Engineering | 213 | 5.7K | 21 | 24 |
| 28 | Research | 167 | 5.6K | 1028 | 933 |
| 29 | Numerical Analysis | 191 | 5.4K | 36 | 35 |
| 30 | Operations Research | 128 | 5.4K | 138 | 122 |
| 31 | System analysis | 162 | 5.3K | 69 | 70 |
| 32 | Structural Engineering | 164 | 5.3K | 97 | 88 |
| 33 | Water | 72 | 5.1K | 356 | 297 |
| 34 | Engineering | 258 | 5.0K | 151 | 195 |
| 35 | Biophysics | 118 | 4.9K | 878 | 763 |
| 36 | energy conservation | 122 | 4.7K | 96 | 197 |
| 37 | Nanotechnology | 202 | 4.7K | 514 | 786 |
| 38 | Biotechnology | 145 | 4.7K | 662 | 851 |
| 39 | Biology | 121 | 4.2K | 1267 | 1621 |
| 40 | Engineering Mathematics | 169 | 4.0K | 46 | 54 |
| 41 | environmental protection | 147 | 4.0K | 172 | 298 |
| 42 | Neural circuitry | 127 | 4.0K | 72 | 99 |
| 43 | Oncology | 2 | 4.0K | 1938 | 434 |
| 44 | Ocean Engineering | 183 | 4.0K | 76 | 120 |
| 45 | Signal Processing | 216 | 3.9K | 146 | 313 |
| 46 | Computer-Aided Design | 104 | 3.9K | 37 | 35 |
| 47 | biological factors | 80 | 3.9K | 106 | 75 |
| 48 | Automation | 127 | 3.8K | 193 | 307 |
| 49 | Electrochemistry | 152 | 3.8K | 531 | 489 |
| 50 | Environment | 73 | 3.7K | 871 | 973 |
| 51 | Power Electronics | 79 | 3.6K | 117 | 120 |
| 52 | Industrial Engineering | 119 | 3.6K | 91 | 107 |
| 53 | coal | 79 | 3.4K | 123 | 117 |
| 54 | Pollution | 117 | 3.4K | 717 | 1024 |
| 55 | Ecology | 83 | 3.4K | 1125 | 1183 |
| 56 | Bioengineering | 129 | 3.4K | 427 | 706 |
| 57 | Surface-Active Agents | 37 | 3.4K | 105 | 29 |
| 57 | Surface properties | 37 | 3.4K | 112 | 30 |
| 59 | Wireless Communication Systems | 154 | 3.3K | 163 | 234 |
| 60 | mass transfer | 114 | 3.3K | 100 | 147 |
| 61 | Heat Exchangers | 59 | 3.2K | 104 | 66 |
| 62 | Membranes | 44 | 3.2K | 364 | 256 |
| 62 | Information Science | 78 | 3.2K | 225 | 207 |
| 64 | Process Control | 28 | 3.1K | 148 | 63 |
| 65 | Production Management | 27 | 3.0K | 273 | 145 |
| 66 | Systems Engineering | 101 | 3.0K | 124 | 129 |
| 67 | Science | 106 | 3.0K | 1511 | 1951 |
| 68 | textile fibers | 160 | 2.9K | 5 | 5 |
| 69 | Analytical Chemistry | 83 | 2.9K | 851 | 783 |
| 70 | Earth Sciences | 163 | 2.9K | 211 | 444 |
| 71 | Engineering Geology | 83 | 2.8K | 110 | 129 |
| 72 | Rock Mechanics | 67 | 2.7K | 101 | 93 |
| 73 | Solitons | 62 | 2.7K | 44 | 21 |
| 73 | Fractals | 62 | 2.7K | 44 | 21 |
| 73 | Chaos | 62 | 2.7K | 44 | 21 |
| 76 | natural gas | 93 | 2.7K | 15 | 18 |
| 77 | Environmental Health | 86 | 2.7K | 812 | 947 |
| 78 | Soil Mechanics | 75 | 2.7K | 115 | 119 |
| 79 | Tunneling | 46 | 2.7K | 32 | 25 |
| 79 | underground construction | 46 | 2.7K | 32 | 25 |
| 81 | Electronics | 143 | 2.6K | 343 | 448 |
| 82 | Technology | 98 | 2.5K | 470 | 508 |
| 83 | Environmental Policy | 61 | 2.5K | 507 | 549 |
| 84 | Earthquake Engineering | 99 | 2.5K | 133 | 184 |
| 85 | Environmental Engineering | 141 | 2.4K | 274 | 622 |
| 86 | Optics | 178 | 2.4K | 488 | 634 |
| 87 | Environmental Management | 48 | 2.3K | 517 | 495 |
| 88 | Mechanics | 106 | 2.2K | 34 | 67 |
| 89 | Simulation Methods | 45 | 2.2K | 33 | 5 |
| 90 | Nuclear Engineering | 154 | 2.1K | 91 | 88 |
| 91 | China | 90 | 2.1K | 273 | 240 |
| 92 | Control Theory | 114 | 2.0K | 132 | 204 |
| 93 | Transportation | 60 | 2.0K | 259 | 231 |
| 94 | Nuclear Energy | 135 | 2.0K | 52 | 53 |
| 95 | Metals | 113 | 2.0K | 185 | 348 |
| 96 | Fracture mechanics | 111 | 2.0K | 87 | 145 |
| 97 | Biomass Energy | 29 | 1.9K | 640 | 511 |
| 98 | computer networks | 105 | 1.9K | 187 | 331 |
| 99 | Catalysis | 62 | 1.9K | 919 | 1035 |
| 100 | vibration | 101 | 1.8K | 52 | 131 |
| 101 | particles | 63 | 1.7K | 37 | 30 |
| 102 | Highway Engineering | 59 | 1.7K | 13 | 14 |
| 103 | Nanostructured Materials | 78 | 1.7K | 556 | 787 |
| 104 | Mining Engineering | 41 | 1.7K | 53 | 59 |
| 105 | Nanostructures | 72 | 1.6K | 137 | 369 |
| 106 | Fluid Dynamics | 34 | 1.6K | 225 | 138 |
| 107 | Calorimetry | 64 | 1.6K | 64 | 48 |
| 107 | Thermal analysis | 64 | 1.6K | 64 | 48 |
| 109 | management | 23 | 1.6K | 1256 | 903 |
| 110 | Environmental monitoring | 37 | 1.6K | 979 | 945 |
| 111 | Nuclear Physics | 123 | 1.6K | 865 | 1153 |
| 112 | Granular materials | 42 | 1.6K | 25 | 11 |
| 113 | Ultrasonics | 35 | 1.6K | 196 | 153 |
| 114 | Telecommunication Systems | 132 | 1.5K | 30 | 93 |
| 115 | Photochemistry | 30 | 1.5K | 359 | 208 |
| 116 | Drug delivery systems | 41 | 1.5K | 198 | 292 |
| 117 | Nanoparticles | 51 | 1.5K | 242 | 322 |
| 118 | Fuzzy systems | 84 | 1.5K | 62 | 62 |
| 119 | miniaturization | 43 | 1.4K | 338 | 505 |
| 120 | Solar Energy | 33 | 1.4K | 296 | 307 |
| 121 | Geology | 55 | 1.4K | 724 | 719 |
| 121 | Metallurgy | 109 | 1.4K | 233 | 445 |
| 123 | Cognitive Science | 32 | 1.4K | 320 | 318 |
| 124 | actuators | 45 | 1.4K | 428 | 502 |
| 124 | transducers | 45 | 1.4K | 428 | 502 |
| 126 | environmental pollution | 39 | 1.4K | 1180 | 1283 |
| 127 | Sonochemistry | 21 | 1.3K | 86 | 72 |
| 128 | software | 22 | 1.3K | 194 | 92 |
| 129 | Measurement | 65 | 1.3K | 84 | 117 |
| 130 | Combustion | 56 | 1.2K | 189 | 237 |
| 131 | Logistics | 25 | 1.2K | 59 | 67 |
| 131 | lasers | 76 | 1.2K | 254 | 325 |
| 133 | Environmental Geology | 32 | 1.2K | 280 | 233 |
| 134 | Molecular Biology | 49 | 1.2K | 1938 | 2202 |
| 135 | Geophysics | 107 | 1.2K | 546 | 931 |
| 136 | concrete | 12 | 1.2K | 406 | 277 |
| 137 | Materials Engineering | 52 | 1.2K | 17 | 8 |
| 138 | Hazardous waste | 11 | 1.2K | 384 | 172 |
| 139 | radioactive waste | 9 | 1.2K | 368 | 162 |
| 139 | industrial waste | 9 | 1.2K | 393 | 163 |
| 141 | Traffic Engineering | 40 | 1.2K | 25 | 56 |
| 142 | Civil Engineering | 94 | 1.2K | 89 | 108 |
| 143 | Telecommunication | 88 | 1.2K | 322 | 595 |
| 144 | machinery | 87 | 1.1K | 17 | 52 |
| 145 | Fluid Mechanics | 77 | 1.1K | 148 | 288 |
| 146 | Electrochemical Analysis | 48 | 1.1K | 226 | 274 |
| 147 | Robotics | 46 | 1.1K | 286 | 335 |
| 148 | Molecular structure | 48 | 1.1K | 403 | 529 |
| 149 | Image Processing | 61 | 1.1K | 337 | 589 |
| 150 | Spectrum analysis | 41 | 1.1K | 1239 | 1275 |
| 151 | Cellulose | 32 | 1.1K | 61 | 93 |
| 152 | Photobiology | 25 | 1.0K | 242 | 175 |
| 153 | Hydrology | 24 | 1.0K | 748 | 599 |
| 154 | Water quality management | 45 | 1.0K | 242 | 277 |
| 155 | Evolutionary Computation | 7 | 971 | 216 | 133 |
| 156 | Semiconductors | 39 | 957 | 426 | 319 |
| 157 | Nondestructive testing | 45 | 954 | 49 | 73 |
| 158 | Structural design | 50 | 947 | 66 | 129 |
| 159 | Physical Chemistry | 37 | 939 | 556 | 670 |
| 160 | Statistical physics | 54 | 934 | 888 | 1011 |
| 161 | nuclear power | 56 | 929 | 53 | 34 |
| 162 | Carbon | 11 | 926 | 629 | 482 |
| 163 | Smart Materials | 40 | 901 | 102 | 160 |
| 164 | Computer Graphics | 36 | 893 | 373 | 418 |
| 165 | Chemical processes | 42 | 890 | 28 | 50 |
| 166 | Computational Fluid Dynamics | 32 | 886 | 74 | 76 |
| 167 | pigments | 21 | 885 | 196 | 116 |
| 168 | Swarm Intelligence | 7 | 877 | 107 | 42 |
| 169 | Statistics | 42 | 870 | 683 | 613 |
| 170 | Solid State Chemistry | 30 | 840 | 828 | 654 |
| 171 | Chemical industry | 35 | 838 | 219 | 171 |
| 172 | Soil dynamics | 32 | 830 | 68 | 89 |
| 172 | Zeolites | 16 | 830 | 289 | 219 |
| 174 | Intelligent Control Systems | 51 | 828 | 72 | 62 |
| 175 | Algorithms | 29 | 780 | 59 | 63 |
| 175 | Detectors | 37 | 780 | 244 | 295 |
| 177 | Biomechanics | 27 | 768 | 304 | 361 |
| 178 | clay | 18 | 763 | 187 | 173 |
| 179 | Astrophysics | 27 | 738 | 1215 | 1211 |
| 180 | Nonlinear mechanics | 20 | 722 | 70 | 42 |
| 181 | Waste management | 32 | 717 | 235 | 237 |
| 182 | Water pollution | 34 | 716 | 729 | 1061 |
| 183 | Photonics | 21 | 711 | 709 | 724 |
| 184 | Quantum electronics | 46 | 692 | 273 | 362 |
| 185 | Mathematical Physics | 45 | 691 | 767 | 850 |
| 185 | nanoscience | 38 | 691 | 759 | 1158 |
| 187 | Geochemistry | 33 | 688 | 585 | 731 |
| 188 | Naval Architecture | 45 | 685 | 43 | 48 |
| 189 | Optical materials | 22 | 678 | 976 | 1061 |
| 190 | extraterrestrial environment | 13 | 677 | 175 | 65 |
| 190 | astronomical phenomena | 13 | 677 | 157 | 58 |
| 192 | color | 52 | 671 | 10 | 17 |
| 193 | Optoelectronic devices | 37 | 661 | 76 | 69 |
| 194 | Organometallic chemistry | 34 | 660 | 469 | 456 |
| 195 | Microwaves | 63 | 657 | 224 | 324 |
| 196 | Radio | 27 | 651 | 437 | 526 |
| 197 | Porous materials | 37 | 649 | 50 | 75 |
| 198 | biopolymers | 20 | 647 | 379 | 376 |
| 199 | Radiation | 54 | 640 | 302 | 501 |
| 200 | Computer Science | 46 | 635 | 236 | 355 |
| 201 | Lightweight concrete | 2 | 633 | 518 | 205 |
| 202 | Bioremediation | 15 | 631 | 154 | 141 |
| 203 | Thermodynamics | 40 | 624 | 149 | 167 |
| 204 | Tribology | 23 | 612 | 318 | 306 |
| 204 | Radio waves | 26 | 612 | 260 | 321 |
| 206 | Nervous system | 36 | 611 | 583 | 933 |
| 207 | Dynamics | 40 | 590 | 238 | 310 |
| 208 | Nonlinear systems | 18 | 581 | 139 | 111 |
| 209 | Systems Analysis | 29 | 576 | 168 | 203 |
| 210 | internet | 10 | 575 | 792 | 520 |
| 211 | Hydraulic Engineering | 32 | 564 | 198 | 280 |
| 212 | Internet of Things | 8 | 560 | 629 | 415 |
| 213 | Computer Engineering | 45 | 555 | 34 | 107 |
| 214 | Solid State Physics | 38 | 553 | 1260 | 1430 |
| 215 | Textile industry | 21 | 552 | 114 | 65 |
| 216 | water supply | 11 | 550 | 384 | 357 |
| 216 | Metallography | 19 | 550 | 211 | 206 |
| 218 | Nonlinear Dynamics | 24 | 544 | 753 | 783 |
| 219 | Pharmacology | 22 | 543 | 1801 | 1910 |
| 220 | energy resources | 13 | 535 | 574 | 774 |
| 220 | India | 21 | 535 | 268 | 80 |
| 222 | Chromatographic analysis | 13 | 531 | 817 | 501 |
| 223 | Soft Condensed Matter | 15 | 529 | 431 | 398 |
| 224 | Africa | 22 | 528 | 390 | 250 |
| 225 | Electrophoresis | 11 | 523 | 785 | 524 |
| 226 | Middle East | 21 | 522 | 219 | 127 |
| 227 | Cytology | 16 | 516 | 1623 | 1731 |
| 227 | Multimedia Systems | 30 | 516 | 384 | 453 |
| 229 | Child | 6 | 515 | 1437 | 771 |
| 230 | Chromatography | 10 | 514 | 809 | 450 |
| 231 | Adhesion | 27 | 513 | 51 | 92 |
| 231 | adhesives | 27 | 513 | 57 | 93 |
| 233 | Energy Storage | 17 | 507 | 417 | 474 |
| 234 | Adolescent | 5 | 502 | 1480 | 689 |
| 234 | Cement | 4 | 502 | 495 | 335 |
| 236 | Sustainable Development | 24 | 496 | 429 | 806 |
| 237 | Marine Geology | 25 | 486 | 105 | 167 |
| 238 | Structural dynamics | 25 | 485 | 276 | 456 |
| 239 | Cybernetics | 24 | 483 | 437 | 650 |
| 240 | Ceramics | 22 | 482 | 417 | 428 |
| 241 | Clinical Chemistry | 7 | 480 | 1538 | 1116 |
| 242 | Electromagnetism | 22 | 477 | 287 | 297 |
| 243 | Fiber Optics | 14 | 472 | 380 | 288 |
| 244 | Emulsions | 30 | 468 | 26 | 29 |
| 245 | Communication | 30 | 463 | 539 | 819 |
| 246 | Molecular Spectroscopy | 17 | 460 | 695 | 620 |
| 247 | Brain | 17 | 451 | 1089 | 1136 |
| 248 | Geographic information systems | 17 | 450 | 288 | 197 |
| 249 | Radiology | 35 | 449 | 255 | 346 |
| 250 | Light | 5 | 448 | 669 | 598 |
| 251 | Egypt | 12 | 439 | 111 | 100 |
| 252 | Information Systems | 19 | 435 | 377 | 444 |
| 253 | Mineral resources | 23 | 430 | 55 | 198 |
| 254 | Microstructure | 15 | 429 | 249 | 118 |
| 254 | Fibers | 41 | 429 | 4 | 3 |
| 256 | Biodegradation | 9 | 426 | 284 | 227 |
| 257 | Medical Physics | 11 | 419 | 752 | 674 |
| 258 | Geotechnical Engineering | 18 | 417 | 162 | 185 |
| 258 | cosmic rays | 33 | 417 | 57 | 106 |
| 260 | Quality Control | 22 | 416 | 396 | 610 |
| 261 | Computer Vision | 23 | 407 | 297 | 561 |
| 261 | Ceramic materials | 22 | 407 | 368 | 468 |
| 263 | Information Theory | 15 | 405 | 573 | 550 |
| 264 | Computational Complexity | 16 | 404 | 288 | 153 |
| 265 | Welding | 19 | 402 | 40 | 18 |
| 266 | Radio wave propagation | 34 | 397 | 103 | 155 |
| 267 | Chemical kinetics | 31 | 393 | 54 | 64 |
| 268 | Sustainable Engineering | 19 | 392 | 536 | 803 |
| 269 | supercritical fluids | 13 | 390 | 133 | 166 |
| 270 | drug evaluation | 8 | 389 | 697 | 466 |
| 271 | Recycling | 5 | 385 | 410 | 408 |
| 272 | Psychophysiology | 5 | 382 | 1885 | 1357 |
| 273 | impact | 2 | 381 | 378 | 138 |
| 274 | microwave antennas | 32 | 376 | 19 | 45 |
| 275 | Physiology | 12 | 373 | 1913 | 1889 |
| 275 | Nanochemistry | 15 | 373 | 360 | 342 |
| 277 | Marine Engineering | 38 | 371 | 30 | 32 |
| 278 | Biosensors | 5 | 368 | 937 | 854 |
| 279 | Energy Conversion | 13 | 366 | 527 | 821 |
| 279 | Analytical Biochemistry | 9 | 366 | 941 | 695 |
| 279 | Diagnostic Imaging | 15 | 366 | 701 | 726 |
| 282 | Multiphase Flow | 17 | 358 | 92 | 165 |
| 283 | Environmental Chemistry | 22 | 357 | 563 | 1184 |
| 284 | Computational Biology | 25 | 353 | 702 | 1101 |
| 284 | mathematical concepts | 14 | 353 | 101 | 69 |
| 286 | Speech Perception | 20 | 352 | 69 | 161 |
| 286 | auditory perception | 20 | 352 | 81 | 182 |
| 288 | Industrial Safety | 11 | 345 | 492 | 438 |
| 289 | Intelligent Transportation Systems | 13 | 342 | 438 | 587 |
| 290 | Information Technology | 31 | 341 | 498 | 1080 |
| 290 | Human-Computer Interaction | 11 | 341 | 688 | 679 |
| 292 | human behavior | 8 | 338 | 1384 | 1516 |
| 292 | Behavior | 8 | 338 | 1791 | 1746 |
| 294 | Medical Technology | 21 | 337 | 405 | 652 |
| 294 | electric vehicles | 13 | 337 | 93 | 122 |
| 294 | Bioelectronics | 4 | 337 | 941 | 809 |
| 294 | Biomass | 4 | 337 | 561 | 335 |
| 298 | Integrated Circuits | 47 | 335 | 61 | 100 |
| 299 | structural stability | 12 | 328 | 104 | 164 |
| 300 | Green Chemistry | 8 | 324 | 1064 | 1116 |
| 301 | Boundary Value Problems | 11 | 323 | 328 | 256 |
| 302 | Antenna Arrays | 10 | 320 | 251 | 236 |
| 302 | Entropy | 9 | 320 | 551 | 272 |
| 302 | Radioisotopes | 23 | 320 | 243 | 281 |
| 305 | Mechatronics | 21 | 317 | 204 | 390 |
| 306 | Electromagnetic compatibility | 26 | 316 | 55 | 100 |
| 307 | Microbiology | 10 | 302 | 2970 | 3014 |
| 307 | Structural health monitoring | 11 | 302 | 45 | 83 |
| 307 | Synaptic Transmission | 1 | 302 | 683 | 218 |
| 310 | Tissue Engineering | 10 | 300 | 101 | 140 |
| 310 | Water Purification | 19 | 300 | 303 | 416 |
| 312 | probabilities | 11 | 299 | 729 | 466 |
| 313 | Neurotransmitters | 9 | 298 | 246 | 182 |
| 314 | Public Health | 8 | 295 | 2751 | 2272 |
| 314 | Petroleum Geology | 13 | 295 | 191 | 245 |
| 316 | Oral communication | 17 | 293 | 80 | 135 |
| 316 | Speech | 17 | 293 | 306 | 488 |
| 318 | fuel cells | 12 | 292 | 589 | 815 |
| 319 | energy development | 22 | 290 | 123 | 483 |
| 320 | Neurology | 16 | 284 | 1863 | 2271 |
| 321 | Municipal Engineering | 5 | 283 | 188 | 82 |
| 321 | natural disasters | 10 | 283 | 584 | 625 |
| 323 | Ore deposits | 9 | 278 | 260 | 262 |
| 324 | Marine Geophysics | 14 | 277 | 48 | 55 |
| 324 | Marine mineral resources | 14 | 277 | 29 | 20 |
| 324 | Seabed | 14 | 277 | 29 | 20 |
| 327 | Water quality | 12 | 274 | 25 | 36 |
| 328 | Microprocessors | 16 | 272 | 138 | 141 |
| 329 | Data Mining | 21 | 271 | 375 | 845 |
| 330 | Hydrogeology | 11 | 267 | 247 | 278 |
| 331 | Food additives | 3 | 263 | 1054 | 695 |
| 331 | hydrocolloids | 3 | 263 | 593 | 508 |
| 333 | Rheology | 15 | 261 | 184 | 255 |
| 334 | Astronomy | 9 | 258 | 1547 | 1533 |
| 335 | Finite Element Method | 11 | 255 | 100 | 101 |
| 335 | Water chemistry | 11 | 255 | 42 | 58 |
| 337 | Technological Innovations | 12 | 249 | 363 | 529 |
| 338 | Bifurcation Theory | 7 | 248 | 107 | 79 |
| 338 | Petroleum | 21 | 248 | 40 | 56 |
| 340 | silicon | 12 | 243 | 90 | 62 |
| 341 | Medical Laboratory Science | 19 | 242 | 685 | 1291 |
| 342 | Thermochemistry | 13 | 241 | 196 | 230 |
| 343 | Digital electronics | 13 | 240 | 59 | 36 |
| 344 | Algebra | 34 | 239 | 377 | 464 |
| 345 | Minerals | 7 | 237 | 409 | 318 |
| 346 | Microelectronics | 19 | 235 | 653 | 1078 |
| 346 | Asia | 12 | 235 | 1298 | 1106 |
| 348 | Natural history | 1 | 233 | 3788 | 2663 |
| 349 | Luminescence | 9 | 231 | 744 | 602 |
| 350 | Ultrasonic Imaging | 14 | 230 | 143 | 235 |
| 350 | Ultrasound | 14 | 230 | 269 | 375 |
| 352 | Neurophysiology | 17 | 228 | 1115 | 1612 |
| 353 | Green Technology | 14 | 225 | 47 | 117 |
| 354 | Mobile Computing | 14 | 224 | 406 | 570 |
| 355 | food technology | 7 | 223 | 1620 | 1608 |
| 356 | Soil Science | 8 | 217 | 1105 | 1198 |
| 357 | Product life cycle | 1 | 213 | 527 | 176 |
| 357 | green products | 1 | 213 | 448 | 170 |
| 359 | Pharmaceutical Chemistry | 8 | 212 | 2050 | 2072 |
| 359 | Liposomes | 5 | 212 | 415 | 357 |
| 361 | Chemical structure | 8 | 211 | 200 | 117 |
| 361 | United States | 10 | 211 | 2500 | 2446 |
| 363 | Economics | 21 | 209 | 1663 | 2040 |
| 363 | Magnetic Materials | 11 | 209 | 815 | 937 |
| 363 | starch | 17 | 209 | 63 | 140 |
| 366 | Greenhouse gases | 5 | 208 | 186 | 205 |
| 367 | Education | 6 | 206 | 2500 | 1737 |
| 368 | Energy Consumption | 5 | 205 | 245 | 308 |
| 368 | Cosmochemistry | 6 | 205 | 586 | 586 |
| 368 | Microwave devices | 8 | 205 | 266 | 240 |
| 371 | Cell Biology | 7 | 204 | 2098 | 2290 |
| 371 | Nonlinear functional analysis | 7 | 204 | 775 | 587 |
| 371 | microwave communication systems | 7 | 204 | 221 | 196 |
| 374 | Transportation Engineering | 10 | 201 | 146 | 201 |
| 375 | Telecommunications | 28 | 200 | 59 | 250 |
| 376 | Condensed Matter | 15 | 198 | 1497 | 1735 |
| 377 | Genetic algorithms | 8 | 196 | 148 | 328 |
| 378 | Alloys | 12 | 192 | 68 | 50 |
| 379 | Environmental risk assessment | 9 | 191 | 120 | 170 |
| 380 | Industrial Microbiology | 7 | 189 | 1195 | 1436 |
| 381 | Flexible manufacturing systems | 14 | 187 | 73 | 205 |
| 382 | mathematical analysis | 23 | 186 | 997 | 1217 |
| 383 | Adaptive control systems | 16 | 184 | 140 | 236 |
| 384 | Nanomedicine | 8 | 183 | 50 | 147 |
| 385 | Drug design | 4 | 182 | 1242 | 1000 |
| 386 | Computational Intelligence | 6 | 181 | 371 | 304 |
| 387 | Combinatorial chemistry | 3 | 180 | 649 | 584 |
| 388 | Public Policy | 8 | 178 | 981 | 1117 |
| 389 | Remote Sensing | 8 | 177 | 852 | 721 |
| 389 | Imaging systems | 14 | 177 | 191 | 251 |
| 391 | Monomers | 7 | 174 | 20 | 19 |
| 392 | Mineralogy | 15 | 173 | 580 | 803 |
| 392 | Organometallic compounds | 11 | 173 | 667 | 822 |
| 394 | Drug targeting | 2 | 169 | 402 | 240 |
| 395 | Visual Communication | 11 | 168 | 108 | 161 |
| 395 | Image enhancement | 11 | 168 | 82 | 150 |
| 397 | Alzheimer's disease | 1 | 167 | 1644 | 659 |
| 398 | Electromagnetic waves | 7 | 166 | 147 | 122 |
| 399 | Genetics | 3 | 164 | 2770 | 2326 |
| 399 | Nanobiotechnology | 2 | 164 | 517 | 423 |
| 401 | Biopharmaceutics | 7 | 162 | 645 | 814 |
| 402 | Petrology | 6 | 160 | 642 | 690 |
| 403 | Project Management | 3 | 159 | 279 | 347 |
| 403 | soil pollution | 3 | 159 | 542 | 304 |
| 403 | solar cells | 4 | 159 | 737 | 797 |
| 406 | Technology Assessment | 4 | 158 | 287 | 379 |
| 407 | Plasma chemistry | 5 | 156 | 278 | 250 |
| 407 | Photogrammetry | 5 | 156 | 600 | 159 |
| 409 | Artificial Organs | 8 | 154 | 333 | 311 |
| 410 | Sedimentology | 2 | 152 | 723 | 433 |
| 410 | Drying | 6 | 152 | 225 | 242 |
| 412 | Hydrodynamics | 11 | 150 | 267 | 450 |
| 413 | Bioinformatics | 13 | 140 | 896 | 1365 |
| 414 | Radiochemistry | 17 | 138 | 294 | 456 |
| 414 | geological modeling | 8 | 138 | 220 | 293 |
| 416 | Japan | 11 | 137 | 800 | 1029 |
| 417 | Psychiatry | 4 | 135 | 2817 | 2535 |
| 417 | Molecules | 15 | 135 | 683 | 916 |
| 417 | construction industry | 10 | 135 | 41 | 64 |
| 417 | Navigation | 18 | 135 | 47 | 108 |
| 421 | Stochastic Processes | 6 | 133 | 623 | 513 |
| 422 | Land use | 2 | 132 | 1341 | 946 |
| 422 | hazard mitigation | 8 | 132 | 421 | 707 |
| 422 | irrigation | 4 | 132 | 267 | 172 |
| 422 | drainage | 4 | 132 | 224 | 100 |
| 426 | Medical innovations | 2 | 131 | 970 | 1015 |
| 426 | Roads | 12 | 131 | 314 | 381 |
| 428 | Nuclear Chemistry | 14 | 130 | 423 | 560 |
| 428 | Turbulence | 9 | 130 | 101 | 142 |
| 430 | Structural optimization | 5 | 127 | 256 | 283 |
| 430 | carbon monoxide | 3 | 127 | 332 | 349 |
| 432 | Agricultural Ecology | 3 | 126 | 960 | 971 |
| 432 | water reuse | 5 | 126 | 179 | 259 |
| 432 | Informatics | 4 | 126 | 717 | 653 |
| 435 | Natural resources | 9 | 125 | 372 | 648 |
| 436 | Decision making | 8 | 124 | 796 | 1071 |
| 437 | Database Management | 5 | 123 | 580 | 602 |
| 437 | Social Change | 3 | 123 | 1039 | 1162 |
| 439 | Electromagnetic fields | 5 | 122 | 250 | 61 |
| 440 | data protection | 6 | 121 | 323 | 299 |
| 441 | Machining | 8 | 118 | 37 | 68 |
| 441 | Biomolecules | 5 | 118 | 291 | 465 |
| 441 | Glass | 4 | 118 | 875 | 819 |
| 444 | Economic History | 3 | 116 | 2998 | 1981 |
| 444 | Human Geography | 3 | 116 | 1047 | 748 |
| 444 | Microbial Biotechnology | 4 | 116 | 842 | 839 |
| 447 | Kinetics | 8 | 115 | 211 | 318 |
| 448 | pollutants | 5 | 114 | 1386 | 1753 |
| 448 | Environmental pollutants | 5 | 114 | 1663 | 1974 |
| 450 | Biogeochemistry | 3 | 113 | 982 | 1025 |
| 450 | Organic Geochemistry | 3 | 113 | 353 | 385 |
| 452 | Nutrition | 2 | 112 | 3610 | 2907 |
| 452 | Neuropsychiatry | 40 | 112 | 98 | 653 |
| 452 | Food | 2 | 112 | 3136 | 2550 |
| 455 | Optical Communications | 5 | 110 | 567 | 491 |
| 455 | Radiation Protection | 21 | 110 | 97 | 224 |
| 455 | radiation monitoring | 21 | 110 | 80 | 206 |
| 455 | Radiation dosimetry | 21 | 110 | 56 | 158 |
| 459 | locomotion | 6 | 108 | 418 | 549 |
| 459 | Freeze-Drying | 2 | 108 | 465 | 272 |
| 459 | posture | 6 | 108 | 418 | 549 |
| 459 | Hypothermia | 2 | 108 | 465 | 272 |
| 459 | Freeze Drying | 2 | 108 | 465 | 272 |
| 459 | gait | 6 | 108 | 418 | 549 |
| 459 | walking | 6 | 108 | 418 | 549 |
| 466 | sustainability | 9 | 107 | 369 | 889 |
| 466 | Agriculture | 4 | 107 | 1715 | 1589 |
| 468 | Linguistics | 14 | 105 | 587 | 871 |
| 468 | Health Policy | 1 | 105 | 2686 | 1451 |
| 468 | Geothermal Energy | 6 | 105 | 119 | 191 |
| 468 | marketing | 2 | 105 | 2153 | 1689 |
| 468 | cell physiology | 4 | 105 | 1103 | 1340 |
| 473 | Speech-Language Pathology | 13 | 103 | 59 | 208 |
| 473 | automatic speech recognition | 13 | 103 | 13 | 121 |
| 475 | Horticulture | 2 | 102 | 890 | 545 |
| 476 | Information Retrieval | 3 | 101 | 455 | 420 |
| 477 | Risk Management | 5 | 100 | 443 | 561 |
| 477 | Sound | 7 | 100 | 645 | 704 |
| 477 | proteins | 2 | 100 | 1936 | 1502 |
| 480 | Cognitive Radio Networks | 3 | 99 | 204 | 174 |
| 481 | Nuclear Fusion | 18 | 98 | 190 | 384 |
| 481 | Radiobiology | 3 | 98 | 1002 | 925 |
| 481 | Building | 4 | 98 | 456 | 358 |
| 484 | Computational Linguistics | 11 | 96 | 145 | 258 |
| 485 | Sociology | 6 | 95 | 2067 | 2234 |
| 485 | Geometry | 12 | 95 | 589 | 604 |
| 485 | Protective coatings | 8 | 95 | 46 | 59 |
| 488 | Developing countries | 4 | 94 | 1938 | 1838 |
| 489 | Microfabrication | 5 | 93 | 225 | 276 |
| 490 | Social Sciences | 6 | 92 | 2476 | 2329 |
| 490 | Cloud Computing | 2 | 92 | 442 | 345 |
| 490 | Ubiquitous computing | 12 | 92 | 24 | 93 |
| 493 | Diagnosis | 2 | 91 | 470 | 288 |
| 493 | Fixed Point Theory | 7 | 91 | 107 | 91 |
| 495 | Optoelectronics | 8 | 90 | 258 | 266 |
| 495 | Thin Films | 3 | 90 | 525 | 343 |
| 495 | solar power | 2 | 90 | 993 | 993 |
| 498 | Pathology | 1 | 89 | 2125 | 1534 |
| 499 | Muscle contraction | 14 | 88 | 44 | 77 |
| 500 | Functional Analysis | 8 | 87 | 884 | 1015 |
| 501 | Ergonomics | 3 | 86 | 852 | 750 |
| 501 | Nuclear Medicine | 2 | 86 | 905 | 689 |
| 501 | Environmental Geochemistry | 3 | 86 | 551 | 509 |
| 501 | Library Science | 4 | 86 | 766 | 487 |
| 505 | Pharmaceutical Technology | 6 | 85 | 1046 | 1447 |
| 505 | Erosion | 3 | 85 | 76 | 93 |
| 505 | pottery | 3 | 85 | 957 | 936 |
| 505 | fusion reactors | 17 | 85 | 123 | 232 |
| 509 | Energy Harvesting | 1 | 84 | 650 | 666 |
| 509 | Combinatorial analysis | 13 | 84 | 458 | 611 |
| 511 | Coding Theory | 4 | 83 | 314 | 216 |
| 511 | pharmaceutical industry | 7 | 83 | 314 | 478 |
| 513 | Neurobiology | 2 | 82 | 1540 | 1506 |
| 513 | Product Design | 3 | 82 | 521 | 381 |
| 513 | Semigroups | 14 | 82 | 51 | 89 |
| 516 | Atomic spectroscopy | 9 | 79 | 636 | 935 |
| 516 | enzymes | 3 | 79 | 1349 | 1431 |
| 518 | Genomics | 3 | 77 | 2411 | 2505 |
| 518 | Quantum Optics | 9 | 77 | 489 | 730 |
| 520 | Histology | 1 | 74 | 2212 | 1660 |
| 520 | Software Engineering | 3 | 74 | 1013 | 905 |
| 520 | Geomorphology | 3 | 74 | 1265 | 1455 |
| 520 | Cell adhesion | 1 | 74 | 311 | 217 |
| 520 | Hydrocarbons | 6 | 74 | 64 | 83 |
| 520 | cell interaction | 1 | 74 | 1354 | 1105 |
| 520 | Laser Spectroscopy | 9 | 74 | 431 | 697 |
| 527 | Health Services Administration | 4 | 73 | 777 | 893 |
| 527 | economic policy | 6 | 73 | 1641 | 1703 |
| 529 | big data | 10 | 72 | 166 | 616 |
| 529 | Cell differentiation | 2 | 72 | 1352 | 1508 |
| 529 | global environmental change | 1 | 72 | 1222 | 1007 |
| 529 | environmental issues | 1 | 72 | 770 | 528 |
| 533 | Epidemiology | 3 | 71 | 2759 | 2709 |
| 533 | Total Quality Management | 1 | 71 | 1084 | 595 |
| 533 | Quantum Gravity | 3 | 71 | 1804 | 1670 |
| 536 | Immunotherapy | 2 | 70 | 1654 | 1645 |
| 536 | Genetic engineering | 2 | 70 | 2027 | 1898 |
| 536 | Immunopharmacology | 2 | 70 | 1186 | 1075 |
| 536 | cytokines | 2 | 70 | 1269 | 1295 |
| 536 | Memory | 3 | 70 | 1354 | 1488 |
| 541 | Global Health | 2 | 69 | 1241 | 891 |
| 541 | Solar power plants | 2 | 69 | 212 | 238 |
| 541 | Climate change | 2 | 69 | 1081 | 1420 |
| 541 | Bioinorganic chemistry | 2 | 69 | 1537 | 1383 |
| 541 | Social policy | 4 | 69 | 882 | 889 |
| 541 | Photovoltaic Cells | 2 | 69 | 213 | 239 |
| 541 | planning | 4 | 69 | 626 | 710 |
| 541 | Economic planning | 4 | 69 | 412 | 586 |
| 549 | Sedimentary rocks | 7 | 68 | 357 | 672 |
| 549 | carbonate rocks | 7 | 68 | 49 | 63 |
| 551 | Combinatorial optimization | 9 | 66 | 179 | 306 |
| 551 | Aerosols | 4 | 66 | 431 | 523 |
| 551 | aerosol | 4 | 66 | 320 | 395 |
| 554 | Social Networks | 9 | 65 | 90 | 363 |
| 554 | Iron | 3 | 65 | 297 | 266 |
| 554 | Fluorescence | 5 | 65 | 298 | 407 |
| 557 | Cryptography | 10 | 64 | 283 | 454 |
| 557 | environmental indicators | 1 | 64 | 1676 | 1506 |
| 557 | Watershed management | 1 | 64 | 515 | 158 |
| 557 | Autism | 1 | 64 | 985 | 813 |
| 561 | Medical Imaging | 1 | 63 | 365 | 250 |
| 561 | Magnetic Resonance Imaging | 1 | 63 | 605 | 419 |
| 561 | Adsorption | 5 | 63 | 120 | 231 |
| 561 | Mesoporous materials | 1 | 63 | 151 | 131 |
| 561 | Aquaculture | 3 | 63 | 1337 | 1377 |
| 566 | Production Planning | 2 | 62 | 357 | 425 |
| 566 | Online social networks | 9 | 62 | 83 | 308 |
| 566 | Production Control | 2 | 62 | 344 | 424 |
| 569 | Marine Biology | 4 | 61 | 1953 | 2332 |
| 569 | Flood control | 4 | 61 | 173 | 249 |
| 571 | soil management | 2 | 60 | 654 | 778 |
| 571 | Risk assessment | 4 | 60 | 493 | 641 |
| 571 | tillage | 2 | 60 | 484 | 680 |
| 574 | drugs | 4 | 59 | 1545 | 1865 |
| 574 | language | 3 | 59 | 792 | 914 |
| 576 | Immunology | 1 | 58 | 3098 | 2589 |
| 576 | Obstetrics | 1 | 58 | 2352 | 1760 |
| 576 | Clinical Immunology | 1 | 58 | 1188 | 1041 |
| 576 | Immunopathology | 1 | 58 | 1329 | 1128 |
| 576 | particle accelerators | 3 | 58 | 103 | 128 |
| 576 | Wireless Communication | 3 | 58 | 449 | 384 |
| 576 | Marine Pollution | 2 | 58 | 1360 | 1493 |
| 576 | bioluminescence | 4 | 58 | 275 | 284 |
| 576 | particle beams | 3 | 58 | 101 | 125 |
| 576 | Pregnancy | 1 | 58 | 1251 | 850 |
| 586 | Polymer Engineering | 8 | 57 | 17 | 85 |
| 586 | Regenerative Medicine | 3 | 57 | 126 | 134 |
| 586 | Diet | 1 | 57 | 2361 | 2200 |
| 586 | Plasma devices | 5 | 57 | 216 | 341 |
| 590 | peptides | 1 | 55 | 1293 | 811 |
| 590 | body temperature | 2 | 55 | 696 | 632 |
| 590 | Cognition | 3 | 55 | 1536 | 1683 |
| 593 | Planets | 3 | 54 | 1217 | 1573 |
| 593 | biomedicine | 3 | 54 | 470 | 736 |
| 595 | Bioprinting | 4 | 53 | 27 | 85 |
| 596 | Diabetes mellitus | 1 | 52 | 2118 | 1864 |
| 596 | Metabolic diseases | 1 | 52 | 2214 | 2016 |
| 596 | Freezing | 2 | 52 | 363 | 259 |
| 596 | radar | 9 | 52 | 62 | 190 |
| 596 | Sonar | 9 | 52 | 52 | 167 |
| 596 | Diabetes | 1 | 52 | 2143 | 1884 |
| 602 | Geography | 3 | 51 | 1859 | 2023 |
| 602 | soil conservation | 2 | 51 | 968 | 1033 |
| 602 | Fossil fuels | 13 | 51 | 9 | 20 |
| 605 | Sustainable Architecture | 2 | 50 | 227 | 124 |
| 605 | Intercultural Communication | 1 | 50 | 835 | 556 |
| 605 | Cross-Cultural Studies | 1 | 50 | 1274 | 880 |
| 605 | Biomimetic materials | 1 | 50 | 26 | 41 |
| 605 | micromechanics | 5 | 50 | 422 | 714 |
| 610 | Computer Architecture | 5 | 49 | 395 | 510 |
| 610 | Systems Biology | 2 | 49 | 1533 | 1637 |
| 610 | Food Preservation | 4 | 49 | 700 | 822 |
| 610 | Wind power | 5 | 49 | 180 | 328 |
| 610 | Catalysts | 5 | 49 | 503 | 814 |
| 615 | Number Theory | 8 | 48 | 461 | 566 |
| 616 | Heterocyclic chemistry | 3 | 47 | 548 | 447 |
| 616 | public works | 9 | 47 | 51 | 134 |
| 618 | Expert Systems | 3 | 46 | 180 | 255 |
| 618 | Air Conditioning | 5 | 46 | 113 | 186 |
| 618 | Aging | 2 | 46 | 2469 | 2350 |
| 621 | Social Psychology | 1 | 45 | 2962 | 2410 |
| 621 | Gene expression regulation | 1 | 45 | 1323 | 1103 |
| 621 | Genetic regulation | 1 | 45 | 1397 | 1245 |
| 621 | protein | 1 | 45 | 1567 | 1256 |
| 621 | Enzyme | 2 | 45 | 663 | 872 |
| 621 | Learning | 1 | 45 | 1723 | 1438 |
| 621 | Scanning electron microscopy | 2 | 45 | 176 | 173 |
| 621 | traffic safety | 3 | 45 | 278 | 361 |
| 629 | Mining Geology | 2 | 44 | 110 | 94 |
| 629 | Avionics | 4 | 44 | 77 | 163 |
| 629 | Sports | 4 | 44 | 1721 | 1888 |
| 629 | land degradation | 1 | 44 | 886 | 779 |
| 629 | degradation | 1 | 44 | 886 | 779 |
| 634 | Geodynamics | 3 | 43 | 800 | 998 |
| 635 | Chronobiology | 2 | 42 | 633 | 635 |
| 635 | Fuzzy Logic | 3 | 42 | 46 | 126 |
| 635 | Circadian rhythms | 2 | 42 | 477 | 564 |
| 635 | biological clocks | 2 | 42 | 633 | 635 |
| 635 | Fuzzy Sets | 3 | 42 | 46 | 126 |
| 635 | circadian rhythm | 2 | 42 | 633 | 635 |
| 635 | biological rhythms | 2 | 42 | 607 | 625 |
| 635 | Fuzzy algorithms | 3 | 42 | 46 | 126 |
| 643 | Health | 5 | 41 | 1482 | 2230 |
| 643 | water resources | 2 | 41 | 277 | 210 |
| 643 | drug development | 3 | 41 | 790 | 1302 |
| 646 | Psychology | 5 | 40 | 3423 | 4237 |
| 646 | International Finance | 4 | 40 | 1464 | 1933 |
| 646 | clay minerals | 2 | 40 | 346 | 446 |
| 649 | electrocatalysis | 3 | 39 | 90 | 154 |
| 650 | Molecular Pharmacology | 1 | 38 | 1100 | 1180 |
| 650 | Sports Medicine | 4 | 38 | 1965 | 2246 |
| 650 | scientific research | 2 | 38 | 78 | 59 |
| 650 | libraries | 1 | 38 | 966 | 576 |
| 654 | emergency management | 2 | 37 | 817 | 979 |
| 654 | infrared radiation | 2 | 37 | 740 | 714 |
| 654 | digital preservation | 2 | 37 | 92 | 115 |
| 657 | Pharmacy | 3 | 36 | 1798 | 2298 |
| 657 | Radiopharmaceuticals | 4 | 36 | 241 | 244 |
| 657 | Metallic Glasses | 4 | 36 | 371 | 634 |
| 657 | Noise | 3 | 36 | 120 | 160 |
| 657 | Digital humanities | 4 | 36 | 68 | 144 |
| 662 | Philosophy | 10 | 35 | 900 | 1067 |
| 662 | Graph Theory | 6 | 35 | 502 | 649 |
| 662 | Discrete Mathematics | 6 | 35 | 203 | 246 |
| 662 | Fractional Calculus | 2 | 35 | 208 | 229 |
| 662 | graph | 6 | 35 | 203 | 246 |
| 662 | Structure-activity relationship | 2 | 35 | 308 | 385 |
| 662 | Chemical reactors | 9 | 35 | 38 | 117 |
| 669 | Flood forecasting | 2 | 34 | 138 | 239 |
| 669 | Exercise | 2 | 34 | 1703 | 1655 |
| 671 | Database Security | 7 | 33 | 22 | 120 |
| 671 | Cardiovascular system | 2 | 33 | 1154 | 1523 |
| 671 | wood | 2 | 33 | 551 | 582 |
| 674 | Organic Chemistry | 2 | 32 | 2948 | 3076 |
| 674 | Educational Technology | 1 | 32 | 2569 | 2245 |
| 674 | Liquid Crystals | 1 | 32 | 1296 | 820 |
| 674 | X-rays | 2 | 32 | 648 | 608 |
| 674 | finance | 3 | 32 | 2274 | 2569 |
| 679 | cell membrane | 1 | 31 | 754 | 793 |
| 680 | Radiologic Technology | 3 | 30 | 128 | 175 |
| 680 | Interventional Radiology | 3 | 30 | 128 | 175 |
| 680 | food contamination | 3 | 30 | 1011 | 1396 |
| 680 | Strategic planning | 2 | 30 | 962 | 1171 |
| 680 | Interventional Radiography | 3 | 30 | 128 | 175 |
| 680 | Endoscopic Surgery | 3 | 30 | 128 | 175 |
| 680 | Central Asia | 1 | 30 | 409 | 311 |
| 680 | brain mapping | 1 | 30 | 794 | 933 |
| 680 | Quantum theory | 3 | 30 | 999 | 1148 |
| 689 | ecological risk assessment | 1 | 29 | 523 | 494 |
| 689 | air quality | 1 | 29 | 537 | 495 |
| 689 | Health Risk Assessment | 1 | 29 | 889 | 753 |
| 692 | Fluorescence spectroscopy | 1 | 28 | 379 | 352 |
| 692 | Global warming | 2 | 28 | 191 | 240 |
| 692 | Broadcasting | 3 | 28 | 177 | 326 |
| 692 | Solutions | 3 | 28 | 396 | 530 |
| 692 | population geography | 1 | 28 | 667 | 651 |
| 692 | Australia | 2 | 28 | 2055 | 2158 |
| 698 | Quality Management | 3 | 27 | 154 | 287 |
| 698 | Sustainable agriculture | 2 | 27 | 877 | 1186 |
| 698 | Parkinson's disease | 1 | 27 | 406 | 460 |
| 701 | Knowledge management | 4 | 26 | 279 | 701 |
| 702 | Cyberterrorism | 1 | 25 | 118 | 166 |
| 702 | Visual Perception | 2 | 25 | 1441 | 1700 |
| 702 | Attention | 2 | 25 | 1491 | 1807 |
| 702 | Perception | 2 | 25 | 1607 | 1901 |
| 706 | Neuropsychology | 2 | 24 | 2249 | 2703 |
| 706 | Chemical analysis | 1 | 24 | 1533 | 1658 |
| 708 | Food Safety | 2 | 23 | 371 | 552 |
| 708 | Leadership | 1 | 23 | 959 | 1076 |
| 708 | food handling | 2 | 23 | 1078 | 1692 |
| 708 | drug therapy | 2 | 23 | 1678 | 2091 |
| 708 | infrared technology | 1 | 23 | 371 | 236 |
| 713 | Oceanography | 5 | 22 | 1172 | 2062 |
| 713 | Occupational Health | 5 | 22 | 737 | 1371 |
| 713 | Machine Learning | 2 | 22 | 411 | 546 |
| 713 | industrial hygiene | 5 | 22 | 717 | 1245 |
| 713 | Superconductors | 1 | 22 | 1177 | 1018 |
| 713 | Continuum Mechanics | 2 | 22 | 220 | 298 |
| 713 | Teaching | 1 | 22 | 2610 | 2305 |
| 713 | Algae | 1 | 22 | 1043 | 1089 |
| 713 | Nanotubes | 2 | 22 | 250 | 304 |
| 713 | Brain damage | 1 | 22 | 630 | 691 |
| 723 | Humanities | 1 | 21 | 3108 | 2297 |
| 723 | Econometrics | 2 | 21 | 1565 | 1624 |
| 723 | Geodesy | 2 | 21 | 946 | 1214 |
| 723 | Transnational corporations | 1 | 21 | 809 | 897 |
| 723 | Submersibles | 2 | 21 | 12 | 20 |
| 723 | disease outbreaks | 1 | 21 | 700 | 854 |
| 723 | Epidemics | 1 | 21 | 672 | 839 |
| 723 | Iran | 12 | 21 | 51 | 158 |
| 723 | World Wide Web | 3 | 21 | 402 | 616 |
| 732 | Ecological Engineering | 1 | 20 | 1093 | 1416 |
| 732 | Urban Transportation | 2 | 20 | 166 | 266 |
| 732 | Quality Assurance | 4 | 20 | 244 | 671 |
| 732 | Knowledge | 1 | 20 | 713 | 585 |
| 732 | reasoning | 3 | 20 | 426 | 724 |
| 732 | genome | 1 | 20 | 1851 | 2075 |
| 732 | synthesis | 1 | 20 | 1643 | 1454 |
| 739 | Cognitive Psychology | 3 | 19 | 447 | 651 |
| 739 | Emergency Medical Services | 1 | 19 | 1018 | 1022 |
| 739 | Databases | 3 | 19 | 362 | 560 |
| 739 | Fishery management | 1 | 19 | 1188 | 1218 |
| 739 | Emergency Medicine | 1 | 19 | 1534 | 1475 |
| 739 | Enzyme inhibitors | 1 | 19 | 761 | 920 |
| 739 | Parallel Processing | 1 | 19 | 687 | 824 |
| 739 | Metabolic syndrome | 1 | 19 | 559 | 656 |
| 739 | River Engineering | 1 | 19 | 47 | 27 |
| 739 | Sulfur | 2 | 19 | 146 | 195 |
| 739 | drinking water | 1 | 19 | 269 | 278 |
| 739 | Water treatment | 1 | 19 | 12 | 43 |
| 739 | Genes | 2 | 19 | 1214 | 1641 |
| 752 | Toxicology | 1 | 18 | 4512 | 4845 |
| 752 | Geosynthetics | 2 | 18 | 113 | 190 |
| 752 | Organizational learning | 2 | 18 | 605 | 922 |
| 752 | Microbial Metabolism | 2 | 18 | 257 | 639 |
| 756 | Planetary Science | 2 | 17 | 576 | 733 |
| 756 | Neurosurgery | 1 | 17 | 1150 | 1268 |
| 756 | visualization | 4 | 17 | 1170 | 1389 |
| 756 | Educational measurement | 1 | 17 | 315 | 358 |
| 756 | free radicals | 1 | 17 | 1639 | 1996 |
| 756 | Soviet Union | 4 | 17 | 548 | 898 |
| 756 | rehabilitation | 4 | 17 | 1685 | 2829 |
| 763 | Geriatrics | 1 | 16 | 3226 | 3172 |
| 763 | Orthopedics | 2 | 16 | 1346 | 1702 |
| 763 | Information visualization | 3 | 16 | 165 | 342 |
| 763 | nucleic acids | 1 | 16 | 1829 | 2078 |
| 763 | Oxidation | 3 | 16 | 143 | 344 |
| 763 | Europe | 5 | 16 | 2105 | 3436 |
| 763 | shipbuilding | 2 | 16 | 125 | 113 |
| 770 | Medical genetics | 1 | 15 | 2283 | 2700 |
| 770 | Aerodynamics | 5 | 15 | 66 | 95 |
| 770 | Computational neuroscience | 1 | 15 | 69 | 89 |
| 770 | Nanomanufacturing | 3 | 15 | 111 | 161 |
| 770 | Drug delivery devices | 1 | 15 | 473 | 738 |
| 770 | healthcare industry | 2 | 15 | 45 | 143 |
| 776 | Ophthalmology | 3 | 14 | 1413 | 2131 |
| 776 | Aerospace Engineering | 2 | 14 | 320 | 400 |
| 776 | Tourism | 1 | 14 | 2394 | 2786 |
| 776 | Marine resources | 3 | 14 | 647 | 1364 |
| 776 | Hospitality industry | 1 | 14 | 812 | 1088 |
| 781 | Occupational Therapy | 4 | 13 | 837 | 1358 |
| 781 | Engineering Physics | 1 | 13 | 192 | 121 |
| 781 | Geomagnetism | 1 | 13 | 772 | 916 |
| 781 | Terahertz Technology | 1 | 13 | 289 | 362 |
| 781 | Child Development | 1 | 13 | 2293 | 2549 |
| 781 | Developmental Disabilities | 1 | 13 | 1346 | 1659 |
| 781 | East Asia | 3 | 13 | 633 | 1157 |
| 788 | Industrial Design | 2 | 12 | 336 | 663 |
| 788 | Molecular evolution | 1 | 12 | 2039 | 2560 |
| 788 | Business | 1 | 12 | 3000 | 3382 |
| 788 | ground penetrating radar | 2 | 12 | 79 | 168 |
| 792 | Structuralism | 1 | 11 | 287 | 455 |
| 792 | Inventory Control | 1 | 11 | 179 | 401 |
| 792 | Geriatric Psychiatry | 1 | 11 | 1358 | 1629 |
| 792 | Sensor Networks | 1 | 11 | 528 | 568 |
| 792 | Exercise therapy | 1 | 11 | 927 | 928 |
| 792 | Social behavior | 1 | 11 | 1709 | 1983 |
| 792 | musculoskeletal system | 1 | 11 | 263 | 374 |
| 792 | Spine | 1 | 11 | 812 | 1020 |
| 800 | Meteorology | 2 | 10 | 2104 | 3084 |
| 800 | Climatology | 2 | 10 | 1829 | 2698 |
| 800 | bioclimatology | 2 | 10 | 1140 | 1924 |
| 800 | Flow chemistry | 2 | 10 | 34 | 105 |
| 800 | Electrophysiology | 3 | 10 | 837 | 1365 |
| 805 | Logic | 2 | 9 | 573 | 715 |
| 805 | Neuroimaging | 1 | 9 | 448 | 576 |
| 805 | Coastal zone management | 1 | 9 | 1076 | 1473 |
| 805 | occupational diseases | 1 | 9 | 1141 | 1596 |
| 805 | optical instruments | 1 | 9 | 511 | 607 |
| 805 | Earthquakes | 2 | 9 | 428 | 699 |
| 805 | older people | 1 | 9 | 2109 | 2107 |
| 805 | environmental exposure | 1 | 9 | 2558 | 3209 |
| 805 | optical phenomena | 1 | 9 | 228 | 325 |
| 805 | optical devices | 1 | 9 | 817 | 1028 |
| 805 | nuclear reactors | 4 | 9 | 13 | 26 |
| 816 | Phenomenology | 1 | 8 | 489 | 401 |
| 816 | Philosophy of Mind | 1 | 8 | 505 | 584 |
| 816 | Cytogenetics | 1 | 8 | 1612 | 2047 |
| 816 | air quality management | 1 | 8 | 947 | 1410 |
| 816 | Ion Exchange | 2 | 8 | 149 | 286 |
| 816 | Powder Metallurgy | 2 | 8 | 285 | 416 |
| 816 | Investment analysis | 2 | 8 | 1235 | 1805 |
| 816 | Eastern Europe | 5 | 8 | 603 | 1523 |
| 816 | Solvent extraction | 2 | 8 | 149 | 286 |
| 816 | magmatism | 1 | 8 | 58 | 71 |
| 816 | Methodology | 3 | 8 | 523 | 1174 |
| 816 | winds | 3 | 8 | 99 | 291 |
| 816 | Autonomous robots | 1 | 8 | 322 | 523 |
| 816 | Liquid chromatography | 2 | 8 | 641 | 1004 |
| 830 | Nonlinear Optics | 1 | 7 | 257 | 323 |
| 830 | movement | 1 | 7 | 647 | 925 |
| 830 | negotiation | 1 | 7 | 148 | 213 |
| 830 | System design | 1 | 7 | 389 | 600 |
| 830 | organization | 1 | 7 | 1275 | 1699 |
| 830 | conflict management | 1 | 7 | 444 | 640 |
| 830 | Entomology | 1 | 7 | 2846 | 3127 |
| 830 | sports equipment | 1 | 7 | 126 | 160 |
| 838 | Criminology | 1 | 6 | 1325 | 1562 |
| 838 | Neurochemistry | 3 | 6 | 1882 | 3218 |
| 838 | plasma spraying | 1 | 6 | 403 | 627 |
| 838 | optical pattern recognition | 1 | 6 | 295 | 379 |
| 838 | crime | 1 | 6 | 1011 | 1190 |
| 843 | Systems Theory | 1 | 5 | 813 | 1066 |
| 843 | Anatomy | 2 | 5 | 1973 | 2870 |
| 843 | Economic Development | 1 | 5 | 2244 | 2799 |
| 843 | epilepsy | 1 | 5 | 1225 | 1665 |
| 843 | Mental Disorders | 3 | 5 | 2147 | 3704 |
| 843 | Action Research | 1 | 5 | 481 | 785 |
| 843 | Formal Languages | 4 | 5 | 232 | 641 |
| 843 | Spectroscopy | 3 | 5 | 155 | 421 |
| 843 | educational planning | 1 | 5 | 727 | 1126 |
| 843 | Fashion | 1 | 5 | 295 | 454 |
| 853 | Audiology | 1 | 4 | 997 | 1283 |
| 853 | Pharmacokinetics | 2 | 4 | 968 | 1777 |
| 853 | Raman spectroscopy | 1 | 4 | 1277 | 1782 |
| 853 | Noise control | 2 | 4 | 351 | 229 |
| 853 | Logic Programming | 5 | 4 | 232 | 616 |
| 853 | Hearing Aids | 1 | 4 | 337 | 472 |
| 853 | Business Ethics | 1 | 4 | 1552 | 2124 |
| 853 | Infrared spectroscopy | 1 | 4 | 684 | 1118 |
| 853 | cooling | 1 | 4 | 98 | 129 |
| 853 | Capital market | 1 | 4 | 810 | 1206 |
| 853 | vapor-liquid equilibrium | 1 | 4 | 98 | 129 |
| 853 | High performance computing | 1 | 4 | 202 | 293 |
| 853 | Interactive multimedia | 1 | 4 | 948 | 1367 |
| 853 | Mental illness | 2 | 4 | 1708 | 2830 |
| 867 | Seismology | 1 | 3 | 708 | 988 |
| 867 | Oral Medicine | 1 | 3 | 1137 | 1566 |
| 867 | Differential Equations | 1 | 3 | 1547 | 1823 |
| 867 | Statistical Mechanics | 3 | 3 | 634 | 1221 |
| 867 | Group theory | 1 | 3 | 171 | 226 |
| 867 | Behavioral research | 1 | 3 | 1150 | 1835 |
| 867 | Bioorganic chemistry | 1 | 3 | 3140 | 3800 |
| 867 | ceramic engineering | 2 | 3 | 89 | 109 |
| 867 | Refractory materials | 1 | 3 | 269 | 367 |
| 867 | Cancer | 1 | 3 | 2941 | 3879 |
| 877 | Physical Therapy | 2 | 2 | 1360 | 2215 |
| 877 | Language Disorders | 1 | 2 | 1170 | 1610 |
| 877 | Institutional Economics | 1 | 2 | 152 | 299 |
| 877 | Cosmology | 3 | 2 | 627 | 1208 |
| 877 | Applied Linguistics | 1 | 2 | 1031 | 1362 |
| 877 | Phonetics | 1 | 2 | 543 | 816 |
| 877 | Radiography | 1 | 2 | 1020 | 1453 |
| 877 | Public Administration | 1 | 2 | 1988 | 2600 |
| 877 | Educational Psychology | 1 | 2 | 2005 | 2784 |
| 877 | Music | 1 | 2 | 1406 | 1736 |
| 877 | diffusion | 3 | 2 | 325 | 679 |
| 877 | voice | 1 | 2 | 800 | 1168 |
| 877 | Language and Logic | 1 | 2 | 174 | 276 |
| 877 | Food texture | 1 | 2 | 322 | 604 |
| 877 | Crystallography | 1 | 2 | 2151 | 2446 |
| 877 | Speech Disorders | 1 | 2 | 1309 | 1771 |
| 877 | Public Finance | 1 | 2 | 378 | 583 |
| 877 | individual differences | 1 | 2 | 527 | 919 |
| 877 | Rhetoric | 1 | 2 | 299 | 332 |
| 877 | Biometrics | 1 | 2 | 1353 | 1794 |
| 877 | Carbohydrates | 1 | 2 | 673 | 1045 |
| 877 | Vision | 1 | 2 | 921 | 1317 |
| 877 | Capitalism | 1 | 2 | 383 | 670 |
| 877 | Soundproofing | 1 | 2 | 229 | 333 |
| 877 | Cheminformatics | 1 | 2 | 570 | 984 |
| 877 | North Africa | 1 | 2 | 374 | 547 |
| 877 | Industrial noise | 1 | 2 | 108 | 168 |
| 904 | Nursing | 1 | 1 | 2627 | 3412 |
| 904 | Applied Mathematics | 1 | 1 | 590 | 752 |
| 904 | Pediatrics | 1 | 1 | 2493 | 3387 |
| 904 | Computational Chemistry | 1 | 1 | 1044 | 1551 |
| 904 | Psychiatric Nursing | 1 | 1 | 1045 | 1586 |
| 904 | Organizational change | 1 | 1 | 1255 | 1995 |
| 904 | Multiscale Modeling | 2 | 1 | 95 | 299 |
| 904 | Underwater acoustics | 1 | 1 | 157 | 259 |
| 904 | nuclear astrophysics | 1 | 1 | 738 | 1024 |
| 904 | Mass Spectrometry | 2 | 1 | 1182 | 2091 |
| 904 | Coatings | 1 | 1 | 99 | 160 |
| 904 | Hydraulic structures | 1 | 1 | 96 | 159 |
| 904 | Parasitology | 1 | 1 | 2712 | 3553 |
| 904 | Classification | 1 | 1 | 550 | 891 |
| 904 | corporate culture | 1 | 1 | 412 | 786 |
| 904 | Paint | 1 | 1 | 59 | 136 |
| 904 | Mountains | 1 | 1 | 787 | 1219 |
| 904 | Heterocyclic compounds | 1 | 1 | 1512 | 2080 |
| 904 | Cerebral cortex | 1 | 1 | 1129 | 1649 |
| 923 | Zoology | 1 | 0 | 3017 | 3951 |
| 923 | Respiratory Therapy | 1 | 0 | 68 | 207 |
| 923 | Higher Education | 1 | 0 | 1108 | 1841 |
| 923 | Clinical Biochemistry | 1 | 0 | 1499 | 2144 |
| 923 | Sociolinguistics | 1 | 0 | 776 | 1212 |
| 923 | Quantum Mechanics | 1 | 0 | 360 | 604 |
| 923 | Operator theory | 1 | 0 | 818 | 1186 |
| 923 | Sustainable urban development | 1 | 0 | 144 | 447 |
| 923 | Decision Support Systems | 1 | 0 | 338 | 681 |
| 923 | Microcirculation | 1 | 0 | 724 | 1161 |
| 923 | Virology | 1 | 0 | 2823 | 3845 |
| 923 | Electron Microscopy | 1 | 0 | 634 | 978 |
| 923 | textile machinery | 1 | 0 | 42 | 78 |
| 923 | Brachytherapy | 1 | 0 | 288 | 448 |
| 923 | Shock Waves | 1 | 0 | 324 | 551 |
| 923 | Smart Cities | 1 | 0 | 31 | 171 |
| 923 | Groundwater | 1 | 0 | 840 | 1439 |
| 923 | gases | 1 | 0 | 68 | 207 |
| 923 | viruses | 1 | 0 | 1546 | 2252 |
| 923 | Microscopy | 1 | 0 | 1990 | 2845 |
| 923 | Approximation Theory | 1 | 0 | 717 | 1067 |
| 923 | freshwater biology | 1 | 0 | 1397 | 2077 |