| 1 | Renewable Energy Sources | 340 | 51.2K | 18 | 6 |
| 2 | Chemical Engineering | 650 | 30.0K | 121 | 119 |
| 3 | Water | 169 | 21.0K | 125 | 40 |
| 4 | Building Materials | 165 | 13.7K | 69 | 35 |
| 5 | Biochemical Engineering | 196 | 13.1K | 192 | 208 |
| 6 | Chemistry | 331 | 12.2K | 1001 | 1050 |
| 7 | Ecology | 208 | 11.8K | 622 | 584 |
| 8 | Environment | 196 | 11.7K | 399 | 479 |
| 9 | Biotechnology | 293 | 10.3K | 325 | 487 |
| 10 | Pollution | 218 | 10.1K | 425 | 492 |
| 11 | Polymers | 283 | 9.8K | 354 | 316 |
| 12 | Engineering | 307 | 9.1K | 108 | 85 |
| 13 | Energy Policy | 169 | 9.1K | 94 | 85 |
| 14 | Materials | 451 | 8.9K | 368 | 659 |
| 15 | Environmental Policy | 184 | 8.7K | 116 | 172 |
| 16 | energy conservation | 88 | 8.5K | 155 | 95 |
| 17 | Environmental Management | 112 | 8.1K | 174 | 92 |
| 18 | Artificial Intelligence | 207 | 8.0K | 169 | 195 |
| 19 | Biomass Energy | 173 | 8.0K | 64 | 118 |
| 20 | polymerization | 215 | 7.9K | 351 | 281 |
| 21 | Medicine | 236 | 7.6K | 968 | 1025 |
| 22 | Meteorology | 140 | 7.6K | 193 | 190 |
| 23 | environmental protection | 250 | 7.4K | 50 | 136 |
| 24 | mass transfer | 100 | 7.2K | 118 | 57 |
| 25 | Composite Materials | 140 | 6.9K | 243 | 215 |
| 26 | Catalysis | 134 | 6.9K | 539 | 482 |
| 27 | environmental pollution | 134 | 6.8K | 435 | 369 |
| 28 | Research | 603 | 6.8K | 382 | 856 |
| 29 | Biomedical Engineering | 193 | 6.4K | 390 | 403 |
| 30 | Science | 242 | 6.4K | 910 | 1421 |
| 31 | Environmental monitoring | 114 | 6.4K | 322 | 265 |
| 32 | Nanotechnology | 235 | 6.1K | 441 | 690 |
| 33 | Membranes | 76 | 5.8K | 224 | 130 |
| 34 | Physics | 243 | 5.8K | 1107 | 1553 |
| 35 | Environmental Health | 163 | 5.7K | 485 | 594 |
| 36 | Computer-Aided Design | 66 | 5.3K | 81 | 17 |
| 37 | computer networks | 82 | 5.2K | 254 | 114 |
| 38 | Biochemistry | 135 | 5.1K | 1453 | 1324 |
| 39 | Neural circuitry | 100 | 4.9K | 96 | 80 |
| 40 | Materials Science | 145 | 4.7K | 547 | 650 |
| 41 | Wireless Communication Systems | 155 | 4.5K | 162 | 188 |
| 42 | Solar Energy | 48 | 4.5K | 184 | 64 |
| 43 | coal | 73 | 4.1K | 148 | 101 |
| 44 | Climatology | 112 | 4.0K | 156 | 203 |
| 45 | atmosphere | 48 | 4.0K | 55 | 9 |
| 46 | Water pollution | 91 | 4.0K | 309 | 331 |
| 47 | Bioengineering | 134 | 3.9K | 411 | 655 |
| 48 | Information Technology | 69 | 3.8K | 188 | 149 |
| 49 | Measurement | 90 | 3.8K | 56 | 28 |
| 50 | Optics | 221 | 3.6K | 413 | 487 |
| 51 | Manufacturing Processes | 100 | 3.6K | 208 | 181 |
| 52 | Environmental Geology | 65 | 3.5K | 105 | 57 |
| 53 | management | 75 | 3.5K | 544 | 580 |
| 54 | Biology | 83 | 3.5K | 1594 | 1813 |
| 55 | Petroleum Engineering | 58 | 3.5K | 87 | 47 |
| 56 | Radiation | 109 | 3.4K | 102 | 77 |
| 57 | Earth Sciences | 113 | 3.4K | 347 | 411 |
| 58 | Information Science | 92 | 3.4K | 185 | 201 |
| 59 | Telecommunication | 62 | 3.3K | 435 | 331 |
| 60 | Technology | 137 | 3.3K | 339 | 413 |
| 61 | Plastics | 114 | 3.1K | 47 | 63 |
| 62 | China | 69 | 3.0K | 367 | 174 |
| 63 | Production Engineering | 79 | 3.0K | 198 | 99 |
| 64 | carbon monoxide | 19 | 2.9K | 17 | 1 |
| 65 | Educational Technology | 53 | 2.9K | 124 | 59 |
| 66 | bioclimatology | 81 | 2.9K | 7 | 11 |
| 67 | Molecular Biology | 79 | 2.9K | 1565 | 1556 |
| 68 | Colloids | 73 | 2.9K | 752 | 713 |
| 69 | Environmental Engineering | 162 | 2.9K | 224 | 575 |
| 70 | Heat Exchangers | 50 | 2.9K | 130 | 81 |
| 71 | nanoscience | 108 | 2.7K | 316 | 586 |
| 72 | Microbiology | 96 | 2.6K | 1050 | 1299 |
| 73 | Surface Chemistry | 68 | 2.6K | 811 | 712 |
| 74 | actuators | 81 | 2.5K | 197 | 272 |
| 74 | transducers | 81 | 2.5K | 197 | 272 |
| 76 | Remote Sensing | 284 | 2.5K | 11 | 40 |
| 77 | Mathematics | 92 | 2.4K | 1347 | 812 |
| 78 | vibration | 42 | 2.4K | 155 | 106 |
| 79 | Tourism | 46 | 2.4K | 222 | 228 |
| 80 | Engineering Geology | 34 | 2.3K | 302 | 166 |
| 81 | Analytical Chemistry | 78 | 2.3K | 889 | 916 |
| 82 | Biophysics | 46 | 2.3K | 1458 | 1152 |
| 83 | Hydrology | 48 | 2.3K | 455 | 349 |
| 84 | Water quality management | 88 | 2.3K | 92 | 108 |
| 85 | Electrical Engineering | 118 | 2.2K | 369 | 276 |
| 86 | marketing | 59 | 2.1K | 288 | 385 |
| 87 | Business | 27 | 2.1K | 655 | 485 |
| 88 | Geophysics | 92 | 2.1K | 609 | 741 |
| 89 | Bioremediation | 41 | 2.1K | 23 | 9 |
| 90 | Telecommunication Systems | 57 | 2.0K | 131 | 60 |
| 91 | Computer Science | 64 | 2.0K | 155 | 89 |
| 92 | Power Electronics | 18 | 1.9K | 396 | 207 |
| 93 | Structural dynamics | 19 | 1.9K | 351 | 169 |
| 94 | Environmental Chemistry | 47 | 1.9K | 283 | 442 |
| 95 | Electromagnetism | 42 | 1.8K | 138 | 99 |
| 96 | Food | 40 | 1.8K | 703 | 593 |
| 96 | Asia | 75 | 1.8K | 208 | 164 |
| 98 | Ocean Engineering | 65 | 1.8K | 256 | 288 |
| 99 | lasers | 110 | 1.8K | 178 | 246 |
| 100 | Detectors | 59 | 1.8K | 129 | 113 |
| 101 | internet | 14 | 1.8K | 628 | 216 |
| 102 | Boundary Value Problems | 37 | 1.8K | 96 | 47 |
| 103 | Antenna Arrays | 34 | 1.7K | 90 | 46 |
| 104 | Biodegradation | 38 | 1.7K | 23 | 20 |
| 105 | Green Technology | 71 | 1.7K | 2 | 4 |
| 106 | Industrial Engineering | 48 | 1.6K | 283 | 276 |
| 107 | Biocompatible Materials | 53 | 1.6K | 890 | 1121 |
| 108 | Structural Engineering | 59 | 1.6K | 267 | 271 |
| 109 | Chemical industry | 57 | 1.6K | 133 | 68 |
| 110 | Mechanical Engineering | 81 | 1.6K | 287 | 262 |
| 110 | Electronics | 84 | 1.6K | 555 | 633 |
| 112 | Geomorphology | 8 | 1.6K | 858 | 276 |
| 113 | Solid State Physics | 77 | 1.6K | 884 | 908 |
| 114 | Industrial Microbiology | 28 | 1.5K | 447 | 400 |
| 115 | Electrophoresis | 38 | 1.5K | 268 | 190 |
| 116 | food technology | 36 | 1.5K | 611 | 518 |
| 117 | Waste management | 66 | 1.5K | 66 | 94 |
| 117 | energy resources | 12 | 1.5K | 611 | 378 |
| 119 | Internet of Things | 4 | 1.5K | 944 | 200 |
| 120 | Photogrammetry | 264 | 1.4K | 9 | 14 |
| 121 | Social Sciences | 89 | 1.4K | 405 | 493 |
| 122 | Soil Science | 12 | 1.4K | 886 | 361 |
| 123 | Biomass | 22 | 1.4K | 84 | 65 |
| 124 | Environmental pollutants | 15 | 1.4K | 914 | 410 |
| 125 | human behavior | 14 | 1.4K | 1022 | 743 |
| 126 | Marine Biology | 23 | 1.3K | 928 | 618 |
| 127 | Behavior | 13 | 1.3K | 1405 | 905 |
| 128 | Smart Materials | 57 | 1.3K | 71 | 112 |
| 129 | Islam | 37 | 1.3K | 20 | 7 |
| 130 | health planning | 15 | 1.3K | 890 | 252 |
| 131 | Nanostructured Materials | 31 | 1.3K | 1030 | 908 |
| 132 | Cognitive Science | 33 | 1.3K | 310 | 343 |
| 133 | Geographic information systems | 36 | 1.3K | 101 | 51 |
| 134 | commerce | 34 | 1.3K | 233 | 305 |
| 135 | Water Purification | 59 | 1.3K | 61 | 83 |
| 136 | Civil Engineering | 73 | 1.3K | 127 | 96 |
| 137 | Toxicology | 18 | 1.3K | 1878 | 1256 |
| 138 | Sociology | 69 | 1.3K | 469 | 608 |
| 139 | Luminescence | 36 | 1.2K | 180 | 72 |
| 140 | pollutants | 14 | 1.2K | 741 | 380 |
| 140 | environmental exposure | 19 | 1.2K | 589 | 326 |
| 142 | United States | 30 | 1.2K | 1473 | 1073 |
| 143 | environmental indicators | 6 | 1.2K | 811 | 152 |
| 144 | Optical materials | 57 | 1.2K | 497 | 812 |
| 145 | Recycling | 14 | 1.2K | 158 | 136 |
| 146 | Marine Pollution | 14 | 1.2K | 474 | 255 |
| 147 | Hazardous waste | 12 | 1.2K | 343 | 171 |
| 148 | Education | 52 | 1.2K | 729 | 679 |
| 149 | radioactive waste | 11 | 1.2K | 300 | 164 |
| 149 | industrial waste | 11 | 1.2K | 323 | 165 |
| 151 | Environmental Toxicology | 12 | 1.2K | 1147 | 614 |
| 152 | Automation | 29 | 1.2K | 690 | 647 |
| 153 | Fuzzy systems | 39 | 1.2K | 184 | 103 |
| 154 | natural disasters | 27 | 1.1K | 204 | 182 |
| 155 | Energy Consumption | 8 | 1.1K | 171 | 62 |
| 156 | Green Chemistry | 11 | 1.1K | 896 | 584 |
| 157 | Microwaves | 119 | 1.1K | 100 | 245 |
| 158 | Tribology | 45 | 1.1K | 155 | 173 |
| 159 | Calorimetry | 49 | 1.1K | 88 | 79 |
| 159 | Thermal analysis | 49 | 1.1K | 88 | 79 |
| 161 | Semiconductors | 53 | 1.1K | 324 | 261 |
| 162 | hazard mitigation | 25 | 1.1K | 104 | 89 |
| 163 | Bioinformatics | 33 | 1.1K | 468 | 524 |
| 163 | Carbon | 10 | 1.1K | 665 | 421 |
| 165 | Computational Biology | 43 | 1.1K | 470 | 629 |
| 166 | Robotics | 39 | 1.0K | 344 | 367 |
| 167 | Electrochemistry | 49 | 1.0K | 1125 | 1106 |
| 168 | enzymes | 26 | 1.0K | 384 | 328 |
| 169 | Product Design | 21 | 1.0K | 140 | 51 |
| 170 | Humanities | 70 | 1.0K | 43 | 80 |
| 171 | Pharmacognosy | 17 | 991 | 682 | 496 |
| 172 | Atmospheric Physics | 29 | 989 | 431 | 468 |
| 173 | Structural design | 37 | 981 | 91 | 129 |
| 174 | global environmental change | 17 | 979 | 215 | 222 |
| 175 | Chromatographic analysis | 49 | 973 | 251 | 282 |
| 176 | Quality Control | 33 | 969 | 266 | 283 |
| 177 | Ceramic materials | 39 | 945 | 194 | 243 |
| 178 | Signal Processing | 40 | 940 | 662 | 787 |
| 179 | Cybernetics | 14 | 917 | 673 | 448 |
| 180 | Communication | 8 | 915 | 1253 | 576 |
| 181 | Fracture mechanics | 36 | 914 | 315 | 324 |
| 182 | Chromatography | 43 | 909 | 228 | 259 |
| 183 | city planning | 21 | 886 | 503 | 357 |
| 184 | Pharmacology | 15 | 882 | 2091 | 1576 |
| 185 | System analysis | 24 | 877 | 747 | 568 |
| 186 | Urban Policy | 10 | 873 | 369 | 130 |
| 187 | Statistical physics | 14 | 867 | 1671 | 1062 |
| 188 | particles | 27 | 865 | 151 | 107 |
| 189 | Photonics | 40 | 863 | 469 | 671 |
| 190 | Environmental Economics | 5 | 861 | 223 | 45 |
| 191 | clay | 14 | 842 | 242 | 159 |
| 192 | Information Systems | 20 | 840 | 358 | 246 |
| 193 | Zeolites | 23 | 832 | 205 | 226 |
| 194 | Ore deposits | 4 | 818 | 455 | 128 |
| 195 | Nuclear Engineering | 22 | 804 | 480 | 253 |
| 196 | textile fibers | 30 | 780 | 55 | 30 |
| 197 | Earthquake Engineering | 21 | 770 | 494 | 447 |
| 198 | Mechatronics | 13 | 769 | 323 | 177 |
| 199 | software | 7 | 765 | 616 | 233 |
| 200 | Computer Graphics | 31 | 754 | 419 | 472 |
| 201 | Nutrition | 14 | 748 | 1806 | 1428 |
| 202 | natural gas | 17 | 743 | 90 | 75 |
| 203 | Nuclear Energy | 17 | 741 | 326 | 163 |
| 204 | Sustainable Development | 35 | 739 | 283 | 603 |
| 205 | Radioisotopes | 30 | 725 | 184 | 125 |
| 206 | Solid State Chemistry | 31 | 718 | 810 | 740 |
| 207 | miniaturization | 14 | 713 | 775 | 752 |
| 208 | Combustion | 20 | 711 | 401 | 357 |
| 209 | solar cells | 4 | 706 | 736 | 266 |
| 210 | concrete | 12 | 703 | 406 | 406 |
| 211 | Human-Computer Interaction | 19 | 696 | 430 | 384 |
| 211 | Medicinal plants | 7 | 696 | 837 | 454 |
| 213 | Stochastic Processes | 16 | 685 | 265 | 95 |
| 213 | solar power | 3 | 685 | 822 | 244 |
| 215 | Multimedia Systems | 38 | 684 | 292 | 363 |
| 216 | Medical Laboratory Science | 12 | 679 | 904 | 780 |
| 217 | Tunneling | 6 | 672 | 220 | 115 |
| 217 | underground construction | 6 | 672 | 220 | 115 |
| 219 | Quantum electronics | 38 | 668 | 336 | 384 |
| 220 | Radio | 11 | 664 | 713 | 539 |
| 221 | Systems Engineering | 25 | 647 | 604 | 628 |
| 221 | Greenhouse gases | 9 | 647 | 115 | 90 |
| 221 | Radio waves | 8 | 647 | 514 | 321 |
| 224 | investigative techniques | 8 | 644 | 30 | 19 |
| 225 | Simulation Methods | 12 | 642 | 363 | 95 |
| 226 | Metals | 28 | 641 | 579 | 697 |
| 227 | Industrial Safety | 18 | 626 | 320 | 269 |
| 228 | Sustainable Engineering | 26 | 624 | 403 | 630 |
| 229 | Dynamics | 8 | 608 | 1002 | 305 |
| 230 | Computational Intelligence | 10 | 605 | 235 | 86 |
| 231 | Fiber Optics | 46 | 604 | 148 | 254 |
| 232 | Nanostructures | 33 | 603 | 392 | 771 |
| 233 | Materials Engineering | 20 | 600 | 102 | 50 |
| 234 | Organometallic chemistry | 29 | 586 | 535 | 518 |
| 235 | Total Quality Management | 14 | 578 | 90 | 51 |
| 236 | Developing countries | 28 | 576 | 574 | 700 |
| 237 | Highway Engineering | 15 | 570 | 104 | 72 |
| 238 | Housing | 9 | 568 | 206 | 117 |
| 239 | Astrophysics | 46 | 567 | 965 | 1358 |
| 240 | Urban Planning | 8 | 560 | 168 | 96 |
| 240 | community development | 8 | 560 | 293 | 100 |
| 240 | Mineral resources | 12 | 560 | 151 | 142 |
| 240 | Population | 8 | 560 | 479 | 263 |
| 244 | Health Information Management | 3 | 559 | 319 | 189 |
| 245 | Nanochemistry | 7 | 556 | 759 | 218 |
| 246 | Technology Assessment | 8 | 555 | 116 | 79 |
| 247 | Decision making | 4 | 554 | 1228 | 457 |
| 248 | Decision Support Systems | 3 | 548 | 128 | 17 |
| 249 | Soil Mechanics | 19 | 544 | 388 | 428 |
| 250 | biological factors | 29 | 543 | 435 | 643 |
| 251 | Geochemistry | 42 | 540 | 514 | 845 |
| 252 | Evolutionary Computation | 4 | 534 | 372 | 228 |
| 253 | Geology | 23 | 528 | 1125 | 1140 |
| 254 | Nuclear Physics | 26 | 524 | 1708 | 1741 |
| 255 | Image Processing | 21 | 520 | 810 | 934 |
| 256 | Mental Disorders | 3 | 516 | 2235 | 1138 |
| 257 | Data Mining | 18 | 504 | 449 | 590 |
| 258 | Rock Mechanics | 11 | 503 | 432 | 370 |
| 259 | Swarm Intelligence | 4 | 493 | 207 | 89 |
| 260 | Corporate governance | 9 | 492 | 201 | 135 |
| 261 | construction industry | 15 | 489 | 24 | 14 |
| 262 | Alternative Medicine | 10 | 488 | 670 | 420 |
| 263 | Radiochemistry | 31 | 480 | 176 | 184 |
| 264 | Enzyme | 17 | 476 | 91 | 171 |
| 265 | Optical Communications | 24 | 474 | 140 | 155 |
| 266 | Genetic engineering | 6 | 471 | 1333 | 887 |
| 267 | Optoelectronics | 48 | 469 | 29 | 36 |
| 268 | Solitons | 9 | 465 | 616 | 330 |
| 268 | Fractals | 9 | 465 | 617 | 331 |
| 268 | Chaos | 9 | 465 | 616 | 330 |
| 271 | Nuclear Chemistry | 29 | 462 | 235 | 241 |
| 272 | Energy Storage | 9 | 454 | 675 | 529 |
| 273 | Computational Fluid Dynamics | 11 | 452 | 258 | 183 |
| 274 | Lightweight concrete | 4 | 450 | 346 | 269 |
| 274 | Spectrum analysis | 30 | 450 | 1514 | 1861 |
| 276 | Natural history | 5 | 449 | 2337 | 2396 |
| 277 | Geodesy | 43 | 441 | 51 | 162 |
| 278 | India | 23 | 439 | 244 | 118 |
| 279 | Hospitality industry | 13 | 429 | 87 | 84 |
| 280 | natural products | 41 | 428 | 283 | 595 |
| 281 | Molecular structure | 31 | 422 | 602 | 925 |
| 282 | Teaching | 16 | 417 | 673 | 608 |
| 283 | Intelligent Transportation Systems | 21 | 416 | 286 | 548 |
| 284 | Computer Engineering | 19 | 410 | 167 | 177 |
| 285 | energy development | 15 | 409 | 196 | 413 |
| 286 | Metallurgy | 26 | 405 | 692 | 900 |
| 286 | Social Change | 7 | 405 | 630 | 624 |
| 286 | Optoelectronic devices | 25 | 405 | 142 | 136 |
| 289 | Land use | 24 | 401 | 209 | 473 |
| 289 | Nonlinear mechanics | 3 | 401 | 447 | 95 |
| 291 | Numerical Analysis | 24 | 396 | 811 | 818 |
| 292 | Energy Conversion | 7 | 393 | 790 | 831 |
| 292 | Microbial Biotechnology | 9 | 393 | 406 | 316 |
| 294 | Combinatorial chemistry | 3 | 392 | 650 | 379 |
| 295 | Chemical processes | 32 | 391 | 52 | 139 |
| 296 | Cytology | 13 | 390 | 1754 | 1940 |
| 297 | Information society | 4 | 388 | 87 | 12 |
| 298 | Statistics | 6 | 386 | 1799 | 916 |
| 299 | Ultrasonics | 9 | 383 | 632 | 588 |
| 300 | Metallography | 14 | 374 | 277 | 290 |
| 301 | Medical Technology | 12 | 371 | 642 | 620 |
| 302 | Egypt | 6 | 370 | 267 | 144 |
| 303 | Granular materials | 9 | 368 | 233 | 166 |
| 304 | Photochemistry | 13 | 363 | 750 | 737 |
| 305 | Hydraulic Engineering | 8 | 356 | 502 | 374 |
| 306 | Clinical Chemistry | 9 | 355 | 1379 | 1291 |
| 307 | Food additives | 4 | 353 | 902 | 578 |
| 307 | hydrocolloids | 4 | 353 | 506 | 428 |
| 309 | Economics | 18 | 352 | 1787 | 1681 |
| 309 | micromechanics | 11 | 352 | 242 | 237 |
| 309 | Photobiology | 12 | 352 | 553 | 547 |
| 312 | East Asia | 18 | 350 | 119 | 74 |
| 313 | Public Health | 14 | 349 | 2297 | 2313 |
| 313 | Library Science | 14 | 349 | 278 | 125 |
| 315 | Operations Research | 9 | 348 | 1339 | 1074 |
| 315 | Entropy | 9 | 348 | 554 | 251 |
| 317 | Nanoparticles | 14 | 346 | 812 | 963 |
| 318 | Ceramics | 19 | 340 | 468 | 552 |
| 319 | Microelectronics | 29 | 338 | 489 | 935 |
| 320 | Psychology | 20 | 336 | 1849 | 2035 |
| 321 | Radio wave propagation | 18 | 327 | 206 | 199 |
| 322 | Intelligent Control Systems | 23 | 326 | 195 | 216 |
| 323 | Porous materials | 19 | 322 | 124 | 163 |
| 324 | Bioorganic chemistry | 12 | 318 | 1414 | 1497 |
| 325 | Analytical Biochemistry | 16 | 313 | 630 | 774 |
| 326 | Mobile Computing | 14 | 312 | 413 | 479 |
| 327 | Food service management | 4 | 307 | 331 | 294 |
| 328 | Microstructure | 20 | 305 | 161 | 176 |
| 329 | complementary therapies | 10 | 304 | 740 | 691 |
| 329 | fuel cells | 6 | 304 | 871 | 826 |
| 331 | Architectural Design | 18 | 296 | 82 | 100 |
| 332 | Physical Geography | 3 | 295 | 489 | 189 |
| 332 | Informatics | 9 | 295 | 411 | 398 |
| 334 | Natural resources | 2 | 289 | 899 | 416 |
| 335 | Methodology | 7 | 287 | 238 | 94 |
| 336 | Health Services Administration | 5 | 281 | 687 | 415 |
| 337 | Mining Engineering | 3 | 277 | 514 | 255 |
| 338 | Fluid Mechanics | 11 | 275 | 771 | 739 |
| 339 | Economic History | 18 | 273 | 1328 | 1384 |
| 339 | Cellulose | 13 | 273 | 170 | 307 |
| 341 | Quality of life | 10 | 269 | 655 | 816 |
| 342 | Agricultural Chemistry | 10 | 264 | 1195 | 1302 |
| 342 | Hydrodynamics | 1 | 264 | 842 | 330 |
| 344 | Biological Systems | 4 | 260 | 417 | 218 |
| 345 | Occupational Health | 13 | 259 | 360 | 391 |
| 346 | Japan | 12 | 258 | 741 | 656 |
| 347 | Telecommunications | 19 | 256 | 118 | 200 |
| 348 | industrial hygiene | 13 | 255 | 338 | 262 |
| 349 | Software Engineering | 8 | 251 | 592 | 519 |
| 350 | Diffusion of innovations | 9 | 250 | 13 | 12 |
| 351 | Emulsions | 13 | 246 | 82 | 64 |
| 352 | environmental issues | 3 | 245 | 400 | 212 |
| 352 | Biodiversity | 3 | 245 | 2075 | 1238 |
| 354 | Engineering Mathematics | 19 | 243 | 620 | 792 |
| 355 | Technological Innovations | 6 | 242 | 686 | 559 |
| 355 | Production Management | 7 | 242 | 738 | 951 |
| 355 | weather | 6 | 242 | 333 | 279 |
| 358 | Condensed Matter | 9 | 241 | 1808 | 1660 |
| 358 | wood | 10 | 241 | 209 | 178 |
| 360 | impact | 3 | 240 | 292 | 200 |
| 361 | Polymer Engineering | 8 | 239 | 16 | 3 |
| 361 | Electrochemical Analysis | 14 | 239 | 703 | 907 |
| 363 | Transportation | 14 | 238 | 704 | 939 |
| 364 | Wireless Communication | 12 | 236 | 97 | 91 |
| 365 | Ultrasonic Imaging | 5 | 234 | 364 | 235 |
| 365 | Ultrasound | 5 | 234 | 522 | 382 |
| 367 | Biomechanics | 5 | 232 | 964 | 734 |
| 367 | Interfaces | 2 | 232 | 449 | 86 |
| 369 | Oceanography | 4 | 229 | 1343 | 1023 |
| 369 | machinery | 13 | 229 | 281 | 327 |
| 371 | biological agents | 28 | 226 | 53 | 34 |
| 372 | Traffic Engineering | 8 | 222 | 193 | 266 |
| 373 | microwave antennas | 7 | 220 | 191 | 90 |
| 374 | Botany | 9 | 217 | 2190 | 2353 |
| 375 | Cloud Computing | 6 | 216 | 153 | 146 |
| 375 | Organizational learning | 13 | 216 | 46 | 115 |
| 377 | Immunology | 3 | 215 | 2376 | 1810 |
| 377 | Food Preservation | 12 | 215 | 272 | 273 |
| 379 | Mathematical Physics | 7 | 213 | 1959 | 1452 |
| 380 | supercritical fluids | 6 | 212 | 259 | 249 |
| 381 | health workforce | 1 | 211 | 354 | 120 |
| 381 | Mechanics | 16 | 211 | 472 | 606 |
| 383 | Linguistics | 5 | 210 | 1020 | 625 |
| 383 | Flexible manufacturing systems | 4 | 210 | 292 | 193 |
| 385 | Geography | 7 | 208 | 1297 | 1227 |
| 386 | Agriculture | 6 | 205 | 1432 | 1252 |
| 387 | Biogeochemistry | 1 | 203 | 1484 | 836 |
| 387 | finance | 11 | 203 | 1260 | 1311 |
| 389 | cytokines | 2 | 198 | 1278 | 823 |
| 390 | Inflammation | 1 | 196 | 1474 | 849 |
| 390 | cell adhesion molecules | 1 | 196 | 371 | 179 |
| 390 | cell interaction | 1 | 196 | 1364 | 767 |
| 390 | Cell communication | 1 | 196 | 909 | 458 |
| 394 | Microbial Ecology | 9 | 195 | 1182 | 1697 |
| 395 | Fluid Dynamics | 10 | 194 | 570 | 663 |
| 396 | Imaging systems | 12 | 193 | 237 | 238 |
| 397 | Climate | 4 | 192 | 467 | 371 |
| 398 | Thermodynamics | 13 | 191 | 492 | 484 |
| 398 | Knowledge management | 12 | 191 | 40 | 73 |
| 400 | environmental remediation | 10 | 190 | 64 | 145 |
| 401 | Cell Biology | 7 | 189 | 2114 | 2405 |
| 402 | Quality Assurance | 10 | 188 | 100 | 106 |
| 403 | Marine Engineering | 10 | 186 | 102 | 63 |
| 404 | Risk Management | 8 | 185 | 302 | 387 |
| 404 | Radiation Protection | 12 | 185 | 191 | 147 |
| 404 | radiation monitoring | 12 | 185 | 160 | 138 |
| 407 | Atmospheric Science | 5 | 184 | 120 | 101 |
| 407 | Korea | 5 | 184 | 215 | 82 |
| 407 | Catalysts | 9 | 184 | 324 | 374 |
| 410 | Access to Information | 3 | 183 | 157 | 155 |
| 410 | big data | 3 | 183 | 629 | 330 |
| 410 | Information dissemination | 3 | 183 | 157 | 155 |
| 413 | Geriatrics | 2 | 181 | 2741 | 1557 |
| 413 | Biosensors | 4 | 181 | 1083 | 1227 |
| 413 | Bioelectronics | 4 | 181 | 948 | 1116 |
| 416 | Nanoelectronics | 10 | 180 | 371 | 311 |
| 417 | water reuse | 6 | 179 | 144 | 195 |
| 418 | Naval Architecture | 7 | 176 | 168 | 133 |
| 419 | Ventilation | 10 | 174 | 184 | 278 |
| 419 | Structure-activity relationship | 13 | 174 | 30 | 171 |
| 421 | Transport | 4 | 173 | 489 | 422 |
| 422 | Mining Geology | 3 | 171 | 76 | 27 |
| 423 | nuclear power | 3 | 170 | 446 | 169 |
| 424 | Evidence-Based Medicine | 4 | 169 | 528 | 407 |
| 424 | drug toxicity | 1 | 169 | 940 | 274 |
| 426 | Database Management | 1 | 168 | 1135 | 529 |
| 427 | Pharmaceutical Chemistry | 10 | 167 | 1904 | 2307 |
| 427 | rehabilitation | 4 | 167 | 1704 | 1367 |
| 429 | Transportation Engineering | 2 | 166 | 373 | 226 |
| 429 | Municipal Engineering | 5 | 166 | 189 | 176 |
| 429 | Medical Physics | 4 | 166 | 1206 | 1073 |
| 432 | Aquaculture | 5 | 164 | 1096 | 961 |
| 433 | Corporate Social Responsibility | 7 | 161 | 94 | 340 |
| 433 | environmental auditing | 7 | 161 | 101 | 342 |
| 435 | Diet | 1 | 160 | 2471 | 1610 |
| 436 | Protective coatings | 5 | 159 | 87 | 23 |
| 437 | Flood control | 7 | 157 | 88 | 85 |
| 437 | Hydrocarbons | 11 | 157 | 40 | 44 |
| 439 | Rheology | 2 | 156 | 691 | 349 |
| 439 | proteins | 10 | 156 | 1007 | 1293 |
| 441 | Radiography | 3 | 155 | 660 | 691 |
| 441 | Export Marketing | 1 | 155 | 452 | 211 |
| 443 | Applied Linguistics | 4 | 153 | 541 | 308 |
| 443 | Building | 5 | 153 | 390 | 281 |
| 445 | indoor air pollution | 7 | 151 | 177 | 267 |
| 445 | Sick building syndrome | 7 | 151 | 177 | 267 |
| 447 | Phytochemistry | 5 | 150 | 136 | 165 |
| 447 | Computer Vision | 17 | 150 | 381 | 940 |
| 447 | Phytoremediation | 5 | 150 | 136 | 165 |
| 447 | Bioreactors | 5 | 150 | 136 | 165 |
| 447 | polar regions | 3 | 150 | 611 | 404 |
| 452 | Environmental Law | 3 | 149 | 1027 | 1160 |
| 452 | Sonochemistry | 4 | 149 | 533 | 725 |
| 452 | Safety management | 15 | 149 | 95 | 217 |
| 452 | Muscle contraction | 8 | 149 | 112 | 36 |
| 456 | Information Retrieval | 3 | 148 | 457 | 340 |
| 456 | Flood forecasting | 6 | 148 | 32 | 46 |
| 458 | Noise | 6 | 146 | 57 | 31 |
| 458 | Sound | 6 | 146 | 715 | 592 |
| 458 | Cheminformatics | 4 | 146 | 229 | 323 |
| 461 | economic policy | 20 | 145 | 859 | 1264 |
| 462 | Agricultural Ecology | 2 | 142 | 1192 | 984 |
| 462 | Herbal medicine | 4 | 142 | 587 | 679 |
| 464 | Drying | 4 | 141 | 310 | 256 |
| 465 | Forest Ecology | 5 | 140 | 765 | 850 |
| 465 | diffusion | 35 | 140 | 16 | 24 |
| 467 | silicon | 11 | 139 | 94 | 126 |
| 468 | Computational Complexity | 5 | 138 | 803 | 521 |
| 469 | Control Theory | 10 | 136 | 1005 | 1127 |
| 469 | visualization | 4 | 136 | 1181 | 599 |
| 471 | Agricultural Engineering | 5 | 135 | 302 | 341 |
| 472 | sanitation | 5 | 132 | 1089 | 1543 |
| 473 | Epidemiology | 5 | 131 | 2431 | 2360 |
| 473 | data collection | 5 | 131 | 762 | 912 |
| 475 | Climate change | 2 | 130 | 1104 | 1266 |
| 475 | Plant physiology | 3 | 130 | 1927 | 1814 |
| 477 | food handling | 3 | 128 | 907 | 900 |
| 477 | Plants | 4 | 128 | 1692 | 1616 |
| 479 | Bioinorganic chemistry | 1 | 127 | 1898 | 1103 |
| 479 | Product life cycle | 5 | 127 | 181 | 280 |
| 481 | Genomics | 8 | 125 | 1671 | 2178 |
| 482 | plant molecular biology | 2 | 124 | 1581 | 1437 |
| 482 | Planets | 2 | 124 | 1469 | 1306 |
| 484 | Antarctica | 2 | 123 | 683 | 296 |
| 485 | green products | 4 | 119 | 195 | 287 |
| 485 | Isotopes | 7 | 119 | 23 | 35 |
| 487 | Drug delivery systems | 5 | 118 | 1172 | 1396 |
| 487 | Forest Management | 4 | 118 | 820 | 870 |
| 489 | Organometallic compounds | 2 | 116 | 1501 | 1014 |
| 490 | Pharmacy | 4 | 115 | 1624 | 1612 |
| 490 | Customer service | 1 | 115 | 149 | 14 |
| 492 | sustainability | 15 | 114 | 251 | 904 |
| 493 | Ecological Engineering | 3 | 113 | 649 | 728 |
| 493 | reasoning | 1 | 113 | 810 | 278 |
| 493 | Radiation dosimetry | 8 | 113 | 179 | 164 |
| 496 | Cognitive neuroscience | 2 | 112 | 1035 | 912 |
| 496 | Neuroplasticity | 2 | 112 | 319 | 252 |
| 496 | Microorganisms | 6 | 112 | 660 | 1071 |
| 496 | human development | 2 | 112 | 942 | 762 |
| 500 | Process Control | 3 | 110 | 973 | 1168 |
| 500 | Semiconductor industry | 6 | 110 | 376 | 356 |
| 502 | Radiology | 3 | 109 | 1200 | 828 |
| 502 | Occupational Therapy | 9 | 109 | 495 | 459 |
| 502 | cosmic rays | 3 | 109 | 424 | 274 |
| 502 | Chemical analysis | 3 | 109 | 1097 | 976 |
| 502 | Glass | 1 | 109 | 1481 | 886 |
| 502 | Vietnam | 2 | 109 | 128 | 32 |
| 508 | Medical Microbiology | 2 | 108 | 2022 | 1853 |
| 508 | plant oils | 8 | 108 | 129 | 168 |
| 510 | Mineralogy | 7 | 107 | 842 | 1010 |
| 510 | Biodiversity conservation | 1 | 107 | 2045 | 1626 |
| 510 | Eutrophication | 1 | 107 | 1263 | 1314 |
| 513 | Histology | 6 | 106 | 1176 | 1484 |
| 513 | emergency management | 6 | 106 | 403 | 596 |
| 515 | Africa | 12 | 104 | 654 | 888 |
| 516 | Cement | 3 | 103 | 551 | 741 |
| 517 | Physiology | 4 | 102 | 2930 | 3035 |
| 517 | Social Psychology | 12 | 102 | 1060 | 1860 |
| 517 | Ubiquitous computing | 8 | 102 | 62 | 84 |
| 517 | Extreme environments | 3 | 102 | 212 | 263 |
| 521 | Human Geography | 6 | 101 | 732 | 819 |
| 521 | Diagnostic Imaging | 4 | 101 | 1427 | 1324 |
| 521 | healthcare industry | 2 | 101 | 49 | 15 |
| 521 | pharmaceutical industry | 2 | 101 | 692 | 420 |
| 525 | Systems Biology | 3 | 100 | 1311 | 1254 |
| 525 | Middle East | 12 | 100 | 385 | 616 |
| 527 | Project Management | 3 | 99 | 277 | 451 |
| 528 | Public Policy | 4 | 98 | 1463 | 1559 |
| 528 | Watershed management | 6 | 98 | 70 | 103 |
| 528 | Capital market | 4 | 98 | 347 | 444 |
| 528 | Chemical reactors | 16 | 98 | 15 | 26 |
| 532 | International Finance | 3 | 97 | 1646 | 1476 |
| 532 | urban forestry | 3 | 97 | 241 | 230 |
| 532 | planning | 3 | 97 | 769 | 576 |
| 535 | educational planning | 2 | 96 | 525 | 406 |
| 536 | Hematology | 1 | 95 | 2072 | 1462 |
| 537 | Systems Theory | 6 | 94 | 206 | 176 |
| 537 | Plant Ecology | 1 | 94 | 2305 | 1733 |
| 537 | Water chemistry | 7 | 94 | 90 | 236 |
| 540 | Expert Systems | 5 | 93 | 79 | 126 |
| 541 | Physical Chemistry | 10 | 92 | 1209 | 1789 |
| 541 | food industry | 7 | 92 | 373 | 599 |
| 541 | Australia | 15 | 92 | 649 | 1364 |
| 544 | Molecular Spectroscopy | 6 | 91 | 1348 | 1593 |
| 544 | Industry | 1 | 91 | 431 | 411 |
| 546 | Organic Chemistry | 11 | 90 | 1749 | 2456 |
| 546 | water supply | 4 | 90 | 708 | 910 |
| 546 | Iron | 2 | 90 | 369 | 220 |
| 549 | System design | 2 | 89 | 255 | 180 |
| 550 | Mathematics Education | 2 | 88 | 620 | 319 |
| 550 | soil management | 1 | 88 | 895 | 682 |
| 550 | Chromosome mapping | 3 | 88 | 1515 | 1666 |
| 550 | tillage | 1 | 88 | 717 | 593 |
| 550 | gene mapping | 3 | 88 | 1645 | 1834 |
| 555 | Magnetic Materials | 9 | 87 | 904 | 1368 |
| 555 | radar | 1 | 87 | 343 | 112 |
| 555 | Sonar | 1 | 87 | 286 | 99 |
| 555 | Navigation | 1 | 87 | 534 | 158 |
| 559 | Visual Communication | 1 | 85 | 840 | 333 |
| 559 | Image enhancement | 1 | 85 | 679 | 303 |
| 559 | Environmental risk assessment | 5 | 85 | 234 | 364 |
| 562 | Water quality | 3 | 84 | 178 | 170 |
| 562 | Environmental Geochemistry | 6 | 84 | 266 | 550 |
| 562 | Plant diseases | 2 | 84 | 2034 | 1597 |
| 562 | Minerals | 6 | 84 | 476 | 782 |
| 566 | Geotechnical Engineering | 8 | 83 | 247 | 406 |
| 566 | Oncology | 1 | 83 | 2454 | 2070 |
| 566 | Surface-Active Agents | 4 | 83 | 978 | 1355 |
| 566 | Social policy | 2 | 83 | 1253 | 830 |
| 566 | Surface properties | 4 | 83 | 1033 | 1409 |
| 566 | ecosystem | 6 | 83 | 884 | 1452 |
| 566 | Microscopy | 7 | 83 | 872 | 1064 |
| 566 | Creativity | 4 | 83 | 218 | 344 |
| 566 | Economic planning | 2 | 83 | 682 | 544 |
| 575 | Molecular Genetics | 2 | 82 | 1792 | 1837 |
| 576 | Hydrogeology | 3 | 81 | 653 | 654 |
| 576 | Proteome | 4 | 81 | 886 | 1122 |
| 576 | thinking | 3 | 81 | 306 | 345 |
| 579 | Marine Geology | 6 | 80 | 412 | 568 |
| 580 | Nanomedicine | 7 | 78 | 57 | 343 |
| 580 | Chemical safety | 3 | 78 | 35 | 12 |
| 580 | Video Games | 1 | 78 | 138 | 28 |
| 580 | Cell death | 1 | 78 | 1313 | 1242 |
| 580 | Cancer | 1 | 78 | 3086 | 2549 |
| 585 | Psychiatry | 2 | 77 | 3653 | 3163 |
| 585 | Mobile Commerce | 3 | 77 | 4 | 12 |
| 587 | Ophthalmology | 1 | 76 | 1909 | 1392 |
| 587 | soil pollution | 2 | 76 | 732 | 559 |
| 589 | geological modeling | 5 | 75 | 338 | 475 |
| 590 | Marine Geophysics | 4 | 74 | 192 | 210 |
| 590 | Marine mineral resources | 4 | 74 | 115 | 96 |
| 590 | Sea | 3 | 74 | 505 | 554 |
| 590 | Fishery resources | 3 | 74 | 562 | 608 |
| 590 | Seabed | 4 | 74 | 115 | 96 |
| 590 | Fisheries | 3 | 74 | 1481 | 1374 |
| 596 | Physical Therapy | 1 | 73 | 1710 | 1197 |
| 596 | Global warming | 6 | 73 | 39 | 156 |
| 598 | Health Physics | 4 | 72 | 108 | 95 |
| 598 | Liquid Crystals | 3 | 72 | 892 | 576 |
| 598 | occupational diseases | 1 | 72 | 1189 | 881 |
| 598 | Oncogenes | 1 | 72 | 1150 | 1190 |
| 598 | Microbial Metabolism | 3 | 72 | 154 | 307 |
| 598 | Human Resources | 2 | 72 | 618 | 735 |
| 604 | Public Relations | 3 | 71 | 452 | 418 |
| 604 | Nondestructive testing | 5 | 71 | 509 | 635 |
| 604 | Public Administration | 3 | 71 | 1333 | 1117 |
| 604 | Chemical kinetics | 10 | 71 | 303 | 494 |
| 604 | Computer Literacy | 2 | 71 | 293 | 272 |
| 604 | Electromagnetic fields | 7 | 71 | 173 | 137 |
| 604 | Europe | 2 | 71 | 3050 | 2304 |
| 611 | Atmospheric Chemistry | 2 | 70 | 929 | 1040 |
| 612 | body temperature | 2 | 69 | 689 | 561 |
| 613 | Machining | 4 | 68 | 92 | 122 |
| 613 | bees | 2 | 68 | 493 | 401 |
| 615 | Distance Education | 4 | 67 | 271 | 432 |
| 615 | Health | 3 | 67 | 1915 | 1904 |
| 615 | Developmental Disabilities | 2 | 67 | 1087 | 1115 |
| 618 | Genetics | 2 | 66 | 3247 | 3164 |
| 619 | Coastal zone management | 3 | 65 | 668 | 787 |
| 619 | Marine resources | 3 | 65 | 664 | 802 |
| 619 | irrigation | 6 | 65 | 206 | 324 |
| 619 | drainage | 6 | 65 | 162 | 211 |
| 623 | Biopharmaceutics | 1 | 64 | 1467 | 1202 |
| 623 | Hearing | 2 | 64 | 742 | 643 |
| 623 | drugs | 1 | 64 | 2484 | 1890 |
| 626 | isomerism | 3 | 63 | 310 | 313 |
| 626 | Central Asia | 2 | 63 | 227 | 174 |
| 626 | Chirality | 3 | 63 | 310 | 313 |
| 629 | Sustainable urban development | 5 | 62 | 12 | 43 |
| 629 | World Wide Web | 6 | 62 | 195 | 322 |
| 631 | Textile industry | 2 | 61 | 614 | 396 |
| 632 | Metallic Glasses | 1 | 60 | 737 | 506 |
| 632 | Microprocessors | 2 | 60 | 778 | 574 |
| 632 | Real Estate Investment | 14 | 60 | 38 | 178 |
| 635 | Population Genetics | 1 | 59 | 1599 | 1431 |
| 635 | Molecular ecology | 1 | 59 | 1400 | 1432 |
| 635 | educational innovations | 3 | 59 | 536 | 660 |
| 638 | Molecules | 3 | 58 | 1481 | 1276 |
| 639 | Environmental Microbiology | 4 | 57 | 1096 | 1804 |
| 639 | soil conservation | 1 | 57 | 1319 | 1012 |
| 639 | Probiotics | 3 | 57 | 151 | 277 |
| 639 | Continental shelf | 1 | 57 | 585 | 525 |
| 639 | technical education | 9 | 57 | 311 | 718 |
| 644 | Industrial Design | 1 | 56 | 483 | 342 |
| 644 | biofuels | 1 | 56 | 474 | 606 |
| 644 | Classification | 1 | 56 | 554 | 294 |
| 644 | biological monitoring | 1 | 56 | 884 | 670 |
| 644 | Liquid chromatography | 5 | 56 | 330 | 372 |
| 649 | Artificial Organs | 4 | 55 | 455 | 530 |
| 649 | Entrepreneurship | 2 | 55 | 1241 | 1408 |
| 649 | Petroleum | 9 | 55 | 111 | 218 |
| 652 | Bacteriology | 3 | 54 | 1580 | 2077 |
| 652 | Hydraulic structures | 5 | 54 | 19 | 30 |
| 652 | aromatic plants | 5 | 54 | 142 | 161 |
| 652 | Chemical structure | 3 | 54 | 514 | 419 |
| 652 | Respiration | 1 | 54 | 1744 | 1489 |
| 657 | Supply Chain Management | 4 | 53 | 2 | 18 |
| 657 | Educational Psychology | 3 | 53 | 1356 | 1506 |
| 657 | Integrated Circuits | 4 | 53 | 700 | 532 |
| 657 | foods | 2 | 53 | 151 | 207 |
| 657 | pigments | 1 | 53 | 1384 | 1092 |
| 662 | Regional Planning | 5 | 52 | 1123 | 1560 |
| 662 | optical devices | 5 | 52 | 335 | 545 |
| 664 | Microfabrication | 4 | 51 | 266 | 407 |
| 664 | Religion and Psychology | 4 | 51 | 409 | 534 |
| 664 | health services | 1 | 51 | 1588 | 1121 |
| 667 | Mental Health | 2 | 50 | 1789 | 1655 |
| 667 | Erosion | 2 | 50 | 115 | 159 |
| 667 | bioluminescence | 4 | 50 | 275 | 324 |
| 667 | herbs | 2 | 50 | 86 | 39 |
| 671 | Community Psychology | 3 | 49 | 538 | 679 |
| 671 | Algorithms | 2 | 49 | 918 | 734 |
| 671 | Plant Biotechnology | 1 | 49 | 1236 | 984 |
| 671 | Neurophysiology | 8 | 49 | 1557 | 2736 |
| 671 | Medical Anthropology | 1 | 49 | 1716 | 1632 |
| 671 | Plant genetic engineering | 1 | 49 | 1254 | 1163 |
| 671 | air quality | 2 | 49 | 322 | 347 |
| 678 | Thermochemistry | 2 | 48 | 579 | 589 |
| 678 | Risk assessment | 4 | 48 | 499 | 748 |
| 678 | Travel | 1 | 48 | 1309 | 881 |
| 678 | Small Business | 1 | 48 | 1143 | 1197 |
| 678 | construction | 5 | 48 | 126 | 311 |
| 678 | ecotourism | 1 | 48 | 466 | 430 |
| 678 | brain mapping | 1 | 48 | 799 | 835 |
| 685 | infrared radiation | 3 | 47 | 615 | 636 |
| 685 | Mycology | 1 | 47 | 2027 | 1678 |
| 685 | Shipping | 1 | 47 | 189 | 69 |
| 685 | Fungi | 1 | 47 | 1425 | 1264 |
| 689 | Plant hormones | 1 | 46 | 584 | 517 |
| 689 | Philippines | 3 | 46 | 99 | 147 |
| 691 | Planetary Science | 2 | 45 | 588 | 531 |
| 692 | Happiness | 2 | 44 | 591 | 764 |
| 692 | Wales | 4 | 44 | 63 | 80 |
| 692 | Therapeutics | 2 | 44 | 1517 | 1729 |
| 695 | Law | 5 | 43 | 983 | 867 |
| 695 | Anatomy | 2 | 43 | 1990 | 1931 |
| 697 | Endocrinology | 2 | 42 | 2461 | 2756 |
| 697 | Clinical Psychology | 1 | 42 | 1591 | 1414 |
| 697 | Smart Cities | 3 | 42 | 7 | 20 |
| 697 | landscapes | 1 | 42 | 405 | 271 |
| 697 | Hormones | 2 | 42 | 1219 | 1419 |
| 697 | Health Risk Assessment | 2 | 42 | 594 | 632 |
| 697 | RNA | 1 | 42 | 754 | 741 |
| 704 | Genetic algorithms | 1 | 41 | 543 | 606 |
| 704 | Parasitology | 2 | 41 | 2354 | 2363 |
| 704 | Parasitic Diseases | 2 | 41 | 1970 | 2125 |
| 704 | Parasites | 2 | 41 | 1766 | 1788 |
| 704 | public works | 6 | 41 | 78 | 156 |
| 709 | Wind power | 1 | 40 | 530 | 361 |
| 709 | Microbiota | 3 | 40 | 50 | 132 |
| 711 | Orthopedics | 2 | 39 | 1372 | 1425 |
| 711 | Software Maintenance | 1 | 39 | 402 | 221 |
| 711 | Photography | 1 | 39 | 1534 | 541 |
| 711 | Cartography | 7 | 39 | 220 | 481 |
| 711 | Health Services Research | 1 | 39 | 2203 | 1790 |
| 711 | Primary health care | 1 | 39 | 2331 | 1891 |
| 717 | Marine Ecology | 2 | 38 | 896 | 948 |
| 717 | Number Theory | 4 | 38 | 723 | 660 |
| 717 | Electromagnetic waves | 5 | 38 | 203 | 398 |
| 720 | Language Disorders | 1 | 37 | 1171 | 958 |
| 720 | Land Use Planning | 2 | 37 | 478 | 644 |
| 720 | Economic Development | 3 | 37 | 1503 | 1993 |
| 720 | Social Networks | 3 | 37 | 298 | 519 |
| 720 | Air Conditioning | 7 | 37 | 74 | 231 |
| 720 | water resources | 1 | 37 | 355 | 223 |
| 720 | Speech Disorders | 1 | 37 | 1326 | 1123 |
| 720 | industrial relations | 1 | 37 | 1317 | 973 |
| 720 | Oral communication | 1 | 37 | 763 | 586 |
| 720 | Speech | 1 | 37 | 1293 | 1145 |
| 730 | Telemedicine | 1 | 36 | 629 | 565 |
| 730 | Fibers | 2 | 36 | 134 | 82 |
| 732 | Food Microbiology | 1 | 35 | 1772 | 1916 |
| 732 | Laser therapy | 2 | 35 | 540 | 524 |
| 732 | motivation | 2 | 35 | 450 | 592 |
| 732 | Alloys | 3 | 35 | 277 | 247 |
| 732 | Learning | 2 | 35 | 1358 | 1587 |
| 732 | disaster relief | 4 | 35 | 141 | 379 |
| 732 | genome | 2 | 35 | 1510 | 1913 |
| 739 | Architecture | 5 | 34 | 402 | 532 |
| 740 | Comparative Education | 2 | 33 | 299 | 299 |
| 740 | Functional Genomics | 1 | 33 | 435 | 525 |
| 740 | air quality management | 2 | 33 | 679 | 968 |
| 740 | Soil dynamics | 2 | 33 | 620 | 785 |
| 740 | Water Microbiology | 3 | 33 | 434 | 822 |
| 740 | clay minerals | 2 | 33 | 348 | 499 |
| 740 | peptides | 2 | 33 | 973 | 1074 |
| 740 | traffic safety | 2 | 33 | 379 | 466 |
| 748 | Political Science | 6 | 32 | 1216 | 1542 |
| 748 | Sensor Networks | 2 | 32 | 346 | 358 |
| 748 | Heritage Tourism | 1 | 32 | 286 | 263 |
| 748 | cultural tourism | 1 | 32 | 286 | 263 |
| 748 | cell physiology | 2 | 32 | 1392 | 1858 |
| 753 | Surveying | 7 | 31 | 59 | 124 |
| 753 | disease vectors | 1 | 31 | 1446 | 1460 |
| 753 | Nanotubes | 5 | 31 | 103 | 230 |
| 756 | Crime prevention | 1 | 30 | 458 | 337 |
| 756 | Cognitive Radio Networks | 3 | 30 | 206 | 372 |
| 756 | Environmental forensics | 3 | 30 | 48 | 126 |
| 756 | animals | 1 | 30 | 1790 | 1465 |
| 756 | Pacific Islands | 2 | 30 | 410 | 400 |
| 756 | Groundwater | 2 | 30 | 643 | 871 |
| 756 | livestock | 1 | 30 | 763 | 650 |
| 756 | Cell metabolism | 1 | 30 | 987 | 1140 |
| 764 | Information Theory | 3 | 29 | 1337 | 1620 |
| 764 | Gene expression regulation | 3 | 29 | 868 | 1299 |
| 764 | International Education | 2 | 29 | 331 | 442 |
| 764 | Genetic regulation | 3 | 29 | 954 | 1451 |
| 764 | protein | 3 | 29 | 1088 | 1468 |
| 764 | ground penetrating radar | 4 | 29 | 32 | 58 |
| 764 | Scanning electron microscopy | 2 | 29 | 176 | 223 |
| 764 | mathematical analysis | 6 | 29 | 1883 | 2309 |
| 772 | Tissue Engineering | 1 | 28 | 607 | 607 |
| 772 | Qualitative Research | 2 | 28 | 635 | 771 |
| 772 | organizational effectiveness | 2 | 28 | 568 | 732 |
| 772 | curriculum evaluation | 2 | 28 | 487 | 640 |
| 776 | Arts | 5 | 27 | 277 | 352 |
| 776 | Zoology | 1 | 27 | 3155 | 2671 |
| 776 | Neurology | 2 | 27 | 3864 | 4484 |
| 776 | Industrial Organization | 2 | 27 | 401 | 545 |
| 776 | electric vehicles | 1 | 27 | 521 | 574 |
| 776 | Hearing Aids | 1 | 27 | 339 | 276 |
| 776 | Investments | 2 | 27 | 707 | 846 |
| 783 | Geriatric Nursing | 1 | 26 | 942 | 714 |
| 783 | Ethics | 3 | 26 | 919 | 1282 |
| 783 | Heterocyclic chemistry | 4 | 26 | 425 | 688 |
| 783 | Adsorption | 2 | 26 | 277 | 418 |
| 783 | Thin Films | 4 | 26 | 431 | 732 |
| 783 | Asymmetric synthesis | 4 | 26 | 62 | 207 |
| 783 | personality | 5 | 26 | 1105 | 2090 |
| 783 | Solutions | 6 | 26 | 221 | 560 |
| 783 | freshwater biology | 5 | 26 | 655 | 1394 |
| 792 | Dermatology | 1 | 25 | 1794 | 1727 |
| 792 | Molecular evolution | 2 | 25 | 1668 | 2310 |
| 792 | Spectroscopy | 4 | 25 | 111 | 125 |
| 792 | consumers | 1 | 25 | 739 | 739 |
| 792 | Performance | 1 | 25 | 450 | 474 |
| 792 | Sales Promotion | 1 | 25 | 270 | 232 |
| 798 | Statistical Mechanics | 2 | 24 | 759 | 797 |
| 798 | Online social networks | 2 | 24 | 397 | 589 |
| 798 | ecological risk assessment | 1 | 24 | 530 | 581 |
| 798 | Adhesion | 6 | 24 | 429 | 1108 |
| 798 | adhesives | 6 | 24 | 460 | 1129 |
| 798 | data protection | 3 | 24 | 597 | 928 |
| 804 | Speech-Language Pathology | 1 | 23 | 530 | 508 |
| 804 | Global Health | 1 | 23 | 1709 | 1611 |
| 804 | Logistics | 1 | 23 | 1009 | 1142 |
| 804 | Cardiovascular system | 1 | 23 | 1435 | 1684 |
| 804 | automatic speech recognition | 1 | 23 | 324 | 343 |
| 804 | Algal blooms | 1 | 23 | 476 | 624 |
| 804 | biological evolution | 1 | 23 | 2577 | 2843 |
| 804 | Cyanobacteria | 1 | 23 | 476 | 624 |
| 804 | Phylogeny | 1 | 23 | 1284 | 1533 |
| 804 | microalgae | 1 | 23 | 476 | 624 |
| 814 | Geosynthetics | 2 | 22 | 116 | 180 |
| 814 | Morphology | 1 | 22 | 1379 | 1119 |
| 814 | symbiosis | 1 | 22 | 328 | 358 |
| 814 | Brain | 1 | 22 | 2878 | 3022 |
| 814 | Fossil fuels | 10 | 22 | 16 | 67 |
| 814 | drug development | 2 | 22 | 992 | 1568 |
| 814 | drug therapy | 2 | 22 | 1735 | 2229 |
| 821 | Sports Medicine | 3 | 21 | 2205 | 2661 |
| 821 | Solar power plants | 1 | 21 | 315 | 438 |
| 821 | Physical organic chemistry | 2 | 21 | 1608 | 1945 |
| 821 | Photovoltaic Cells | 1 | 21 | 317 | 439 |
| 821 | Finite Element Method | 1 | 21 | 568 | 595 |
| 826 | Ergonomics | 2 | 20 | 1064 | 1379 |
| 826 | Financial Engineering | 1 | 20 | 366 | 492 |
| 826 | Islamic Architecture | 1 | 20 | 219 | 228 |
| 826 | Substance Abuse | 2 | 20 | 1461 | 1869 |
| 830 | Paleoclimatology | 1 | 19 | 1450 | 1632 |
| 830 | Serology | 2 | 19 | 614 | 980 |
| 830 | Sedimentology | 1 | 19 | 995 | 1102 |
| 830 | Taste | 1 | 19 | 584 | 657 |
| 830 | flavor | 1 | 19 | 407 | 523 |
| 830 | Language teaching | 1 | 19 | 148 | 200 |
| 830 | smell | 1 | 19 | 584 | 657 |
| 830 | second language | 1 | 19 | 148 | 200 |
| 830 | bats | 1 | 19 | 237 | 277 |
| 830 | Southeast Asia | 1 | 19 | 717 | 600 |
| 830 | Fouling | 2 | 19 | 288 | 617 |
| 841 | Developmental Psychology | 5 | 18 | 743 | 1589 |
| 841 | Bioethics | 3 | 18 | 889 | 1336 |
| 841 | poverty | 1 | 18 | 796 | 909 |
| 841 | Reproductive health | 1 | 18 | 1198 | 1351 |
| 841 | Virology | 2 | 18 | 2487 | 3376 |
| 841 | Urban Anthropology | 2 | 18 | 246 | 415 |
| 841 | Continuum Mechanics | 1 | 18 | 324 | 336 |
| 841 | Drug discovery | 1 | 18 | 465 | 567 |
| 849 | Systems Analysis | 3 | 17 | 1172 | 1899 |
| 849 | Sports | 3 | 17 | 1927 | 2466 |
| 849 | Shape Memory Alloys | 2 | 17 | 60 | 92 |
| 849 | elasticity | 2 | 17 | 301 | 410 |
| 849 | Shape memory polymers | 2 | 17 | 60 | 92 |
| 849 | Shape Memory Effect | 2 | 17 | 60 | 92 |
| 849 | Social behavior | 6 | 17 | 788 | 1819 |
| 849 | extraterrestrial environment | 2 | 17 | 711 | 979 |
| 849 | astronomical phenomena | 2 | 17 | 644 | 917 |
| 858 | Intercultural Communication | 1 | 16 | 841 | 897 |
| 858 | Human Rights | 2 | 16 | 715 | 952 |
| 858 | Cross-Cultural Studies | 1 | 16 | 1284 | 1384 |
| 858 | Social Entrepreneurship | 2 | 16 | 158 | 497 |
| 858 | Molecular cloning | 1 | 16 | 1948 | 2160 |
| 858 | Mass Media | 5 | 16 | 625 | 978 |
| 858 | Genetic recombination | 1 | 16 | 1916 | 2135 |
| 858 | Jurisprudence | 2 | 16 | 1058 | 1320 |
| 858 | Recombinant DNA | 1 | 16 | 1994 | 2213 |
| 858 | Microwave devices | 3 | 16 | 467 | 748 |
| 858 | Imagination | 1 | 16 | 183 | 159 |
| 858 | Consciousness | 1 | 16 | 813 | 817 |
| 870 | Quality Management | 3 | 15 | 154 | 398 |
| 870 | Career development | 1 | 15 | 819 | 881 |
| 870 | Organizational change | 1 | 15 | 1261 | 1412 |
| 870 | Virtual reality | 1 | 15 | 752 | 834 |
| 870 | Noise control | 3 | 15 | 272 | 95 |
| 870 | touch | 1 | 15 | 210 | 257 |
| 870 | Tropical Medicine | 2 | 15 | 1886 | 2565 |
| 870 | probabilities | 1 | 15 | 1783 | 1555 |
| 870 | social marketing | 1 | 15 | 146 | 225 |
| 879 | Bioavailability | 2 | 14 | 104 | 292 |
| 879 | nuclear magnetic resonance | 1 | 14 | 1262 | 1261 |
| 879 | Friction | 1 | 14 | 251 | 403 |
| 879 | Magnetic Resonance Spectroscopy | 1 | 14 | 1456 | 1487 |
| 879 | Cognitive Learning | 4 | 14 | 76 | 311 |
| 884 | Soil stabilization | 1 | 13 | 32 | 40 |
| 884 | Raman spectroscopy | 1 | 13 | 1299 | 1554 |
| 884 | Infrared spectroscopy | 1 | 13 | 686 | 899 |
| 884 | Monomers | 1 | 13 | 159 | 227 |
| 884 | Lipids | 1 | 13 | 1708 | 2072 |
| 884 | toxicity testing | 1 | 13 | 1064 | 1423 |
| 884 | Soundproofing | 2 | 13 | 132 | 148 |
| 884 | Soviet Union | 1 | 13 | 1254 | 1020 |
| 884 | Industrial noise | 2 | 13 | 54 | 62 |
| 893 | Otolaryngology | 1 | 12 | 721 | 817 |
| 893 | Adult Education | 2 | 12 | 788 | 1063 |
| 893 | Oxidative stress | 1 | 12 | 1282 | 1830 |
| 893 | Sustainable agriculture | 2 | 12 | 894 | 1574 |
| 893 | Strategic planning | 2 | 12 | 958 | 1539 |
| 893 | Nanomanufacturing | 3 | 12 | 108 | 188 |
| 893 | Cell survival | 1 | 12 | 438 | 705 |
| 893 | Ethnology | 1 | 12 | 2208 | 2163 |
| 893 | telemarketing | 1 | 12 | 231 | 415 |
| 893 | sports administration | 1 | 12 | 604 | 774 |
| 893 | Papermaking | 5 | 12 | 58 | 132 |
| 893 | mathematical concepts | 1 | 12 | 721 | 740 |
| 893 | molecular chaperones | 1 | 12 | 499 | 714 |
| 906 | Magnetic Resonance Imaging | 1 | 11 | 609 | 751 |
| 906 | Machine Learning | 1 | 11 | 570 | 676 |
| 906 | starch | 2 | 11 | 422 | 777 |
| 906 | Medical innovations | 1 | 11 | 1261 | 1793 |
| 906 | X-rays | 1 | 11 | 858 | 893 |
| 906 | infection | 1 | 11 | 1917 | 2376 |
| 906 | Light | 1 | 11 | 1272 | 1644 |
| 906 | Sedimentary rocks | 2 | 11 | 739 | 1152 |
| 906 | biomimicry | 1 | 11 | 326 | 476 |
| 906 | carbonate rocks | 2 | 11 | 181 | 321 |
| 906 | Immunity | 1 | 11 | 1941 | 2450 |
| 917 | Food Science | 2 | 10 | 289 | 628 |
| 917 | Bioenergetics | 1 | 10 | 1234 | 1651 |
| 917 | Real Estate Development | 1 | 10 | 68 | 83 |
| 917 | Algebra | 2 | 10 | 1673 | 1707 |
| 917 | Engineering Ethics | 1 | 10 | 384 | 596 |
| 917 | Multicultural Education | 1 | 10 | 730 | 814 |
| 917 | sustainable construction | 1 | 10 | 32 | 46 |
| 917 | soil microbiology | 1 | 10 | 1982 | 2654 |
| 917 | Indoor air quality | 2 | 10 | 123 | 259 |
| 917 | Professional ethics | 1 | 10 | 554 | 827 |
| 917 | Portfolio Management | 1 | 10 | 505 | 491 |
| 917 | Welding | 1 | 10 | 469 | 477 |
| 917 | plasma spraying | 1 | 10 | 406 | 579 |
| 917 | Roads | 2 | 10 | 759 | 1112 |
| 917 | heating | 2 | 10 | 192 | 382 |
| 917 | Mountains | 1 | 10 | 794 | 925 |
| 917 | real estate | 1 | 10 | 120 | 159 |
| 917 | Exercise | 2 | 10 | 1704 | 2299 |
| 935 | Orthopedic Surgery | 1 | 9 | 1009 | 1213 |
| 935 | Continuing Education | 1 | 9 | 794 | 860 |
| 935 | Crystal growth | 1 | 9 | 1477 | 1807 |
| 935 | Toxins | 1 | 9 | 1387 | 1737 |
| 939 | Sustainable Design | 1 | 8 | 40 | 99 |
| 939 | Health Policy | 1 | 8 | 2868 | 3392 |
| 939 | Environmental Psychology | 1 | 8 | 668 | 1044 |
| 939 | housing policy | 1 | 8 | 246 | 345 |
| 939 | Real-time Data Processing | 1 | 8 | 245 | 347 |
| 939 | Behavioral research | 1 | 8 | 1167 | 1547 |
| 939 | Child welfare | 1 | 8 | 1734 | 2084 |
| 939 | Urbanization | 1 | 8 | 409 | 592 |
| 939 | blood substitutes | 3 | 8 | 64 | 196 |
| 939 | Child Development | 1 | 8 | 2335 | 2853 |
| 939 | space environment | 1 | 8 | 297 | 433 |
| 939 | artificial cells | 3 | 8 | 92 | 230 |
| 951 | Sustainable Architecture | 3 | 7 | 144 | 468 |
| 951 | Emergency Medical Services | 1 | 7 | 1040 | 1381 |
| 951 | Building Information Modeling | 1 | 7 | 12 | 14 |
| 951 | Hydrometeorology | 1 | 7 | 355 | 562 |
| 951 | Emergency Medicine | 1 | 7 | 1593 | 1870 |
| 951 | Information visualization | 1 | 7 | 381 | 517 |
| 951 | food contamination | 1 | 7 | 1735 | 2225 |
| 951 | Crystallography | 3 | 7 | 1586 | 2112 |
| 951 | Malaria | 1 | 7 | 971 | 1356 |
| 951 | Pesticides | 1 | 7 | 1138 | 1629 |
| 961 | Discourse Analysis | 1 | 6 | 692 | 937 |
| 961 | Petroleum Geology | 2 | 6 | 595 | 1007 |
| 961 | Environmental Education | 2 | 6 | 454 | 956 |
| 961 | Digital electronics | 1 | 6 | 604 | 690 |
| 961 | Digital Media | 1 | 6 | 405 | 578 |
| 961 | Education and globalization | 1 | 6 | 56 | 88 |
| 961 | Powder Metallurgy | 1 | 6 | 434 | 489 |
| 961 | Sintering | 1 | 6 | 92 | 129 |
| 961 | Migration | 2 | 6 | 255 | 617 |
| 961 | Transnational education | 1 | 6 | 56 | 88 |
| 961 | Metrology | 1 | 6 | 172 | 266 |
| 961 | Criminal investigation | 1 | 6 | 346 | 519 |
| 973 | Aerospace Engineering | 2 | 5 | 314 | 600 |
| 973 | Neuropsychology | 1 | 5 | 2747 | 3464 |
| 973 | Social Ethics | 1 | 5 | 375 | 466 |
| 973 | Asset Management | 1 | 5 | 150 | 220 |
| 973 | Ecohydrology | 1 | 5 | 707 | 1038 |
| 973 | Drug design | 1 | 5 | 2165 | 2777 |
| 973 | social justice | 1 | 5 | 713 | 893 |
| 973 | Applied Ethics | 1 | 5 | 297 | 422 |
| 973 | Consumer education | 1 | 5 | 716 | 1230 |
| 973 | optical pattern recognition | 1 | 5 | 292 | 421 |
| 973 | training | 1 | 5 | 106 | 147 |
| 973 | Ukraine | 1 | 5 | 120 | 60 |
| 973 | Mental illness | 1 | 5 | 2173 | 2932 |
| 986 | Philosophy | 1 | 4 | 2057 | 1823 |
| 986 | Nursing | 1 | 4 | 2634 | 3186 |
| 986 | Horticulture | 1 | 4 | 1216 | 1668 |
| 986 | Landscape Architecture | 1 | 4 | 339 | 437 |
| 986 | Computer Architecture | 1 | 4 | 909 | 1162 |
| 986 | Leadership | 1 | 4 | 956 | 1419 |
| 986 | Investment analysis | 1 | 4 | 1583 | 1993 |
| 986 | Organic farming | 1 | 4 | 105 | 247 |
| 986 | Eastern Europe | 1 | 4 | 1489 | 1770 |
| 986 | Phytotherapy | 1 | 4 | 1225 | 1903 |
| 986 | smart structures | 1 | 4 | 24 | 54 |
| 986 | Cognition | 2 | 4 | 1821 | 2917 |
| 998 | Higher Education | 2 | 3 | 774 | 1625 |
| 998 | Educational Leadership | 1 | 3 | 306 | 536 |
| 998 | Environmental Geography | 1 | 3 | 66 | 167 |