| 1 | Materials | 2,847 | 124.8K | 29 | 47 |
| 2 | Chemistry | 1,063 | 111.0K | 394 | 214 |
| 3 | Physics | 2,347 | 105.6K | 169 | 288 |
| 4 | Nanotechnology | 1,467 | 81.6K | 47 | 62 |
| 5 | Materials Science | 996 | 52.4K | 68 | 69 |
| 6 | Automation | 786 | 47.3K | 6 | 12 |
| 7 | Biology | 479 | 47.1K | 538 | 458 |
| 8 | Biocompatible Materials | 685 | 40.5K | 63 | 65 |
| 9 | Science | 764 | 37.6K | 391 | 529 |
| 10 | Signal Processing | 927 | 34.6K | 11 | 33 |
| 11 | Nanostructured Materials | 668 | 34.3K | 34 | 33 |
| 12 | nanoscience | 527 | 33.1K | 42 | 50 |
| 13 | Nuclear Physics | 1,217 | 32.7K | 176 | 262 |
| 14 | Optical materials | 527 | 32.0K | 38 | 35 |
| 15 | Composite Materials | 895 | 31.1K | 6 | 22 |
| 16 | Image Processing | 667 | 28.1K | 12 | 16 |
| 17 | Artificial Intelligence | 693 | 26.8K | 16 | 56 |
| 18 | Chemical Engineering | 438 | 26.1K | 210 | 142 |
| 19 | Control Theory | 749 | 22.9K | 2 | 4 |
| 20 | Optics | 915 | 22.2K | 85 | 83 |
| 21 | Biomedical Engineering | 748 | 21.5K | 49 | 93 |
| 22 | Manufacturing Processes | 613 | 20.8K | 10 | 10 |
| 23 | Catalysis | 291 | 19.0K | 270 | 184 |
| 24 | Electronics | 524 | 18.3K | 74 | 73 |
| 25 | Systems Engineering | 566 | 18.1K | 3 | 3 |
| 26 | Mechanical Engineering | 839 | 17.9K | 5 | 5 |
| 27 | China | 669 | 17.3K | 35 | 19 |
| 28 | Wireless Communication Systems | 495 | 16.8K | 22 | 37 |
| 29 | fuel cells | 182 | 16.1K | 30 | 28 |
| 30 | Intelligent Transportation Systems | 366 | 15.5K | 5 | 5 |
| 31 | Production Engineering | 451 | 14.6K | 14 | 7 |
| 32 | Research | 665 | 14.6K | 346 | 514 |
| 33 | Biotechnology | 340 | 14.0K | 279 | 378 |
| 34 | Condensed Matter | 398 | 13.7K | 260 | 279 |
| 35 | Neural circuitry | 445 | 13.6K | 9 | 15 |
| 36 | Cybernetics | 251 | 13.6K | 14 | 18 |
| 37 | Polymers | 450 | 13.0K | 221 | 259 |
| 38 | Transportation | 263 | 12.9K | 50 | 34 |
| 39 | Statistical physics | 480 | 12.8K | 151 | 178 |
| 40 | Energy Conversion | 137 | 12.7K | 56 | 68 |
| 41 | Nanoparticles | 238 | 12.6K | 39 | 37 |
| 42 | Bioengineering | 312 | 12.4K | 145 | 269 |
| 43 | Metallurgy | 318 | 12.2K | 68 | 90 |
| 44 | Energy Policy | 277 | 12.1K | 40 | 57 |
| 45 | Mathematics | 808 | 11.6K | 171 | 179 |
| 46 | Metals | 296 | 11.5K | 53 | 81 |
| 47 | Solid State Physics | 411 | 11.3K | 283 | 321 |
| 48 | Telecommunication | 294 | 11.3K | 92 | 127 |
| 49 | Renewable Energy Sources | 124 | 11.2K | 130 | 124 |
| 50 | Biochemical Engineering | 250 | 10.9K | 142 | 254 |
| 51 | Industrial Safety | 255 | 10.7K | 1 | 2 |
| 52 | Pollution | 211 | 10.6K | 445 | 488 |
| 53 | Robotics | 337 | 10.2K | 11 | 25 |
| 54 | Environmental Chemistry | 81 | 10.2K | 147 | 99 |
| 55 | Technology | 522 | 10.1K | 51 | 114 |
| 56 | Carbon | 124 | 10.0K | 37 | 30 |
| 57 | Medicine | 384 | 9.9K | 690 | 918 |
| 58 | computer networks | 370 | 9.9K | 16 | 43 |
| 59 | Molecular Biology | 178 | 9.8K | 1,001 | 847 |
| 60 | System analysis | 367 | 9.8K | 5 | 22 |
| 61 | Electrochemistry | 314 | 9.6K | 250 | 196 |
| 62 | Colloids | 268 | 9.5K | 226 | 252 |
| 63 | Internet of Things | 308 | 9.4K | 9 | 10 |
| 64 | internet | 308 | 9.4K | 9 | 13 |
| 65 | Environmental Health | 181 | 9.2K | 451 | 420 |
| 66 | Analytical Chemistry | 233 | 9.2K | 335 | 297 |
| 67 | vibration | 288 | 9.1K | 12 | 19 |
| 68 | Astrophysics | 504 | 9.0K | 275 | 569 |
| 69 | Quantum Gravity | 444 | 8.9K | 137 | 297 |
| 70 | Heat Exchangers | 360 | 8.8K | 7 | 16 |
| 71 | Structural dynamics | 227 | 8.8K | 13 | 23 |
| 72 | Mathematical Physics | 290 | 8.8K | 123 | 150 |
| 73 | Detectors | 545 | 8.7K | 1 | 1 |
| 74 | Engineering | 470 | 8.5K | 50 | 99 |
| 75 | Mechatronics | 234 | 8.5K | 2 | 3 |
| 75 | Natural history | 35 | 8.5K | 821 | 721 |
| 77 | miniaturization | 135 | 8.4K | 114 | 137 |
| 78 | mass transfer | 330 | 8.4K | 16 | 43 |
| 79 | Microelectronics | 161 | 8.1K | 91 | 125 |
| 80 | energy conservation | 144 | 7.9K | 76 | 110 |
| 81 | Information Science | 193 | 7.9K | 47 | 57 |
| 82 | Telecommunication Systems | 267 | 7.8K | 7 | 4 |
| 83 | Surface Chemistry | 235 | 7.8K | 258 | 281 |
| 84 | Geophysics | 376 | 7.6K | 237 | 360 |
| 85 | Ecology | 153 | 7.4K | 774 | 803 |
| 86 | Photonics | 234 | 7.4K | 94 | 142 |
| 87 | Multimedia Systems | 311 | 7.2K | 12 | 15 |
| 88 | Radio | 164 | 7.2K | 76 | 92 |
| 89 | Measurement | 401 | 7.1K | 2 | 8 |
| 90 | Information Technology | 332 | 6.9K | 7 | 63 |
| 91 | Environment | 132 | 6.8K | 597 | 702 |
| 92 | extraterrestrial environment | 369 | 6.8K | 2 | 3 |
| 93 | Environmental Engineering | 143 | 6.7K | 281 | 314 |
| 94 | astronomical phenomena | 357 | 6.6K | 2 | 3 |
| 95 | Computer Graphics | 329 | 6.5K | 24 | 78 |
| 96 | polymerization | 261 | 6.5K | 297 | 369 |
| 97 | Computer Vision | 189 | 6.4K | 13 | 63 |
| 98 | Biophysics | 237 | 6.4K | 577 | 665 |
| 99 | Magnetic Materials | 185 | 6.2K | 38 | 38 |
| 100 | environmental pollution | 133 | 5.9K | 447 | 443 |
| 101 | Fracture mechanics | 319 | 5.5K | 15 | 45 |
| 102 | energy resources | 87 | 5.4K | 44 | 80 |
| 103 | Power Electronics | 105 | 5.3K | 78 | 88 |
| 104 | actuators | 238 | 5.2K | 41 | 103 |
| 104 | transducers | 238 | 5.2K | 41 | 103 |
| 106 | Combustion | 285 | 5.2K | 25 | 74 |
| 107 | energy development | 49 | 5.0K | 31 | 49 |
| 108 | lasers | 220 | 4.8K | 77 | 90 |
| 109 | Medical Laboratory Science | 29 | 4.6K | 513 | 169 |
| 110 | multimedia | 124 | 4.5K | 13 | 19 |
| 110 | Interactive multimedia | 124 | 4.5K | 13 | 19 |
| 112 | Nonlinear systems | 180 | 4.5K | 4 | 4 |
| 113 | machinery | 122 | 4.4K | 11 | 6 |
| 114 | sanitation | 63 | 4.3K | 232 | 276 |
| 115 | Computer Science | 276 | 4.1K | 4 | 26 |
| 116 | Spectrum analysis | 265 | 4.0K | 355 | 739 |
| 117 | Nanostructures | 81 | 4.0K | 122 | 172 |
| 118 | Environmental monitoring | 84 | 3.9K | 465 | 471 |
| 119 | Biomechanics | 132 | 3.7K | 57 | 124 |
| 120 | Solitons | 114 | 3.7K | 13 | 13 |
| 120 | Fractals | 114 | 3.7K | 13 | 13 |
| 120 | Chaos | 114 | 3.7K | 13 | 13 |
| 123 | Astronomy | 113 | 3.7K | 549 | 623 |
| 124 | Medical Physics | 141 | 3.7K | 119 | 177 |
| 124 | Diagnostic Imaging | 120 | 3.7K | 114 | 136 |
| 126 | Fluid Dynamics | 164 | 3.6K | 18 | 45 |
| 127 | Radiography | 61 | 3.6K | 83 | 97 |
| 128 | Nonlinear Dynamics | 134 | 3.5K | 200 | 242 |
| 129 | Metallic Glasses | 114 | 3.5K | 6 | 10 |
| 130 | Structural Engineering | 131 | 3.4K | 124 | 141 |
| 131 | Green Chemistry | 68 | 3.4K | 208 | 232 |
| 132 | Systems Analysis | 120 | 3.3K | 9 | 17 |
| 133 | Planets | 127 | 3.3K | 184 | 276 |
| 134 | Electromagnetism | 169 | 3.2K | 14 | 30 |
| 135 | Energy Storage | 79 | 3.1K | 81 | 99 |
| 136 | Biomass Energy | 47 | 3.0K | 437 | 359 |
| 137 | Environmental Policy | 65 | 3.0K | 487 | 503 |
| 138 | Mobile Computing | 98 | 3.0K | 37 | 60 |
| 139 | Radio waves | 145 | 2.9K | 43 | 110 |
| 140 | Sustainable Engineering | 59 | 2.9K | 174 | 159 |
| 141 | Biochemistry | 91 | 2.9K | 1,805 | 1,763 |
| 142 | Logistics | 70 | 2.9K | 15 | 20 |
| 143 | Fluid Mechanics | 215 | 2.8K | 32 | 137 |
| 144 | Database Management | 91 | 2.8K | 40 | 69 |
| 145 | coal | 92 | 2.8K | 106 | 175 |
| 146 | biopolymers | 72 | 2.6K | 118 | 114 |
| 147 | management | 64 | 2.6K | 637 | 693 |
| 148 | Metallography | 92 | 2.5K | 14 | 14 |
| 149 | finance | 96 | 2.5K | 232 | 300 |
| 150 | Numerical Analysis | 173 | 2.5K | 51 | 138 |
| 151 | health planning | 110 | 2.5K | 87 | 109 |
| 152 | Soft Condensed Matter | 73 | 2.4K | 112 | 118 |
| 153 | Engineering Mathematics | 184 | 2.4K | 40 | 112 |
| 154 | Ocean Engineering | 97 | 2.4K | 168 | 221 |
| 155 | Nondestructive testing | 105 | 2.4K | 8 | 14 |
| 156 | Economics | 132 | 2.3K | 552 | 657 |
| 157 | Soil Mechanics | 54 | 2.3K | 173 | 149 |
| 158 | Solar Energy | 59 | 2.3K | 129 | 148 |
| 159 | Electrical Engineering | 178 | 2.3K | 220 | 258 |
| 160 | Communication | 64 | 2.3K | 296 | 282 |
| 161 | visualization | 156 | 2.3K | 47 | 62 |
| 162 | biocatalysis | 5 | 2.3K | 105 | 50 |
| 162 | Homogeneous catalysis | 5 | 2.3K | 105 | 50 |
| 162 | Heterogeneous catalysis | 5 | 2.3K | 105 | 50 |
| 165 | Environmental Management | 48 | 2.3K | 528 | 526 |
| 166 | Operations Research | 99 | 2.3K | 205 | 315 |
| 167 | Databases | 65 | 2.2K | 31 | 44 |
| 168 | Ceramic materials | 63 | 2.2K | 112 | 96 |
| 169 | infrared radiation | 82 | 2.2K | 13 | 3 |
| 170 | International Finance | 67 | 2.2K | 140 | 146 |
| 171 | Nuclear Fusion | 87 | 2.2K | 73 | 72 |
| 172 | Dynamics | 122 | 2.2K | 35 | 67 |
| 173 | Solid State Chemistry | 72 | 2.2K | 387 | 293 |
| 174 | Ultrasonics | 70 | 2.1K | 72 | 104 |
| 175 | Plastics | 62 | 2.1K | 150 | 124 |
| 176 | Technological Innovations | 48 | 2.1K | 54 | 37 |
| 177 | environmental protection | 55 | 2.1K | 589 | 633 |
| 178 | human behavior | 21 | 2.0K | 817 | 611 |
| 179 | Boundary Value Problems | 111 | 2.0K | 15 | 38 |
| 180 | Behavior | 21 | 2.0K | 1,112 | 744 |
| 181 | Antenna Arrays | 109 | 2.0K | 14 | 37 |
| 182 | Product Design | 89 | 1.9K | 29 | 23 |
| 183 | Health Information Management | 17 | 1.9K | 20 | 69 |
| 184 | biological factors | 33 | 1.9K | 385 | 241 |
| 185 | rehabilitation | 54 | 1.8K | 313 | 313 |
| 186 | Building Materials | 47 | 1.8K | 322 | 403 |
| 187 | Structural optimization | 87 | 1.7K | 7 | 28 |
| 188 | Computational Biology | 65 | 1.7K | 341 | 495 |
| 189 | Human-Computer Interaction | 89 | 1.7K | 36 | 136 |
| 190 | plasticity | 35 | 1.7K | 38 | 62 |
| 191 | Bioinformatics | 64 | 1.7K | 274 | 427 |
| 192 | Ultrasound | 61 | 1.7K | 52 | 61 |
| 193 | Tribology | 57 | 1.7K | 124 | 111 |
| 194 | Smart Materials | 86 | 1.7K | 36 | 85 |
| 195 | Particle Physics | 5 | 1.7K | 150 | 20 |
| 196 | Elementary particles | 4 | 1.6K | 126 | 20 |
| 197 | Energy Harvesting | 23 | 1.6K | 89 | 122 |
| 198 | Water | 51 | 1.6K | 481 | 691 |
| 199 | Light | 6 | 1.6K | 629 | 304 |
| 200 | Fuzzy systems | 121 | 1.6K | 23 | 57 |
| 201 | mathematical analysis | 105 | 1.6K | 258 | 269 |
| 202 | Entropy | 110 | 1.6K | 4 | 13 |
| 203 | Tourism | 18 | 1.5K | 547 | 360 |
| 203 | Cognitive Science | 57 | 1.5K | 168 | 306 |
| 205 | Structural design | 71 | 1.5K | 37 | 80 |
| 206 | Ultrasonic Imaging | 49 | 1.5K | 20 | 14 |
| 207 | Engineering Geology | 33 | 1.5K | 317 | 251 |
| 208 | Adaptive control systems | 80 | 1.4K | 10 | 13 |
| 209 | impact | 36 | 1.4K | 31 | 40 |
| 210 | Nervous system | 69 | 1.4K | 367 | 632 |
| 211 | Industrial Engineering | 62 | 1.3K | 230 | 345 |
| 212 | Medical innovations | 41 | 1.3K | 97 | 313 |
| 213 | solar power | 27 | 1.3K | 103 | 107 |
| 213 | solar cells | 27 | 1.3K | 133 | 132 |
| 215 | software | 50 | 1.3K | 38 | 97 |
| 216 | Ceramics | 34 | 1.3K | 290 | 222 |
| 217 | Optical Communications | 75 | 1.3K | 40 | 55 |
| 218 | Biosensors | 39 | 1.3K | 188 | 354 |
| 219 | Quantum theory | 40 | 1.3K | 162 | 127 |
| 220 | Quality Control | 89 | 1.3K | 56 | 211 |
| 221 | Environmental Law | 20 | 1.3K | 294 | 328 |
| 222 | Nanochemistry | 49 | 1.2K | 72 | 60 |
| 223 | Computational Fluid Dynamics | 85 | 1.2K | 5 | 41 |
| 224 | Quantum electronics | 52 | 1.2K | 246 | 238 |
| 225 | Information Theory | 101 | 1.2K | 89 | 268 |
| 226 | Fiber Optics | 83 | 1.2K | 77 | 156 |
| 227 | Membranes | 32 | 1.2K | 475 | 541 |
| 228 | Parallel Processing | 43 | 1.2K | 42 | 96 |
| 229 | Bioelectronics | 33 | 1.1K | 176 | 340 |
| 230 | Rock Mechanics | 30 | 1.1K | 214 | 211 |
| 231 | biomimicry | 35 | 1.1K | 3 | 5 |
| 232 | Computational Intelligence | 47 | 1.1K | 26 | 34 |
| 233 | Physical Chemistry | 44 | 1.1K | 513 | 663 |
| 234 | Flexible manufacturing systems | 34 | 1.1K | 17 | 22 |
| 235 | Forecasting | 16 | 1.1K | 115 | 70 |
| 236 | Social Sciences | 37 | 1.1K | 821 | 628 |
| 237 | Neurology | 39 | 1.1K | 1,315 | 1,501 |
| 238 | Semiconductors | 68 | 1.0K | 239 | 288 |
| 239 | Superconductors | 58 | 1.0K | 132 | 117 |
| 240 | Computer-Aided Design | 57 | 1.0K | 108 | 203 |
| 241 | economic forecasting | 13 | 992 | 64 | 46 |
| 242 | Simulation Methods | 40 | 983 | 37 | 47 |
| 243 | Earthquake Engineering | 35 | 974 | 346 | 385 |
| 244 | Water pollution | 25 | 973 | 913 | 922 |
| 245 | Zeolites | 23 | 967 | 206 | 196 |
| 246 | Thermodynamics | 126 | 956 | 23 | 103 |
| 247 | Atmospheric Physics | 25 | 955 | 481 | 482 |
| 247 | Microwaves | 77 | 955 | 185 | 270 |
| 249 | Recycling | 16 | 940 | 136 | 185 |
| 250 | economic policy | 35 | 939 | 562 | 408 |
| 251 | Machine Learning | 23 | 938 | 36 | 80 |
| 252 | Public Policy | 31 | 935 | 388 | 400 |
| 253 | Microbiology | 40 | 929 | 1,725 | 2,130 |
| 254 | Ophthalmology | 28 | 926 | 532 | 508 |
| 255 | Earth Sciences | 65 | 908 | 592 | 962 |
| 256 | Glass | 26 | 886 | 262 | 259 |
| 257 | Investment analysis | 42 | 880 | 45 | 106 |
| 257 | optical pattern recognition | 17 | 880 | 12 | 8 |
| 259 | Cytology | 18 | 871 | 1,572 | 1,477 |
| 260 | Cell Biology | 16 | 865 | 1,555 | 1,489 |
| 260 | pottery | 25 | 865 | 264 | 256 |
| 262 | sustainability | 27 | 836 | 116 | 266 |
| 263 | Decision making | 28 | 835 | 306 | 352 |
| 264 | Computer Architecture | 39 | 823 | 44 | 36 |
| 265 | electric vehicles | 45 | 817 | 23 | 46 |
| 266 | Psychology | 35 | 809 | 1,349 | 1,365 |
| 267 | Sustainable Development | 30 | 801 | 339 | 587 |
| 268 | Production Management | 27 | 780 | 278 | 516 |
| 269 | Virtual reality | 34 | 768 | 18 | 40 |
| 270 | Remote Sensing | 71 | 760 | 90 | 217 |
| 271 | Statistics | 41 | 755 | 716 | 683 |
| 272 | particles | 28 | 752 | 142 | 130 |
| 273 | Economic History | 38 | 751 | 830 | 805 |
| 274 | Statistical Mechanics | 25 | 747 | 149 | 125 |
| 275 | Information Retrieval | 30 | 742 | 44 | 106 |
| 276 | Information Systems | 30 | 737 | 222 | 288 |
| 277 | Microprocessors | 26 | 727 | 73 | 38 |
| 278 | Software Engineering | 57 | 704 | 96 | 276 |
| 279 | Process Control | 24 | 697 | 189 | 407 |
| 279 | Atmospheric Chemistry | 11 | 697 | 450 | 431 |
| 281 | Fuzzy Logic | 16 | 687 | 4 | 6 |
| 281 | Fuzzy Sets | 16 | 687 | 4 | 6 |
| 281 | Fuzzy algorithms | 16 | 687 | 4 | 6 |
| 281 | Europe | 25 | 687 | 964 | 819 |
| 285 | Computational Complexity | 83 | 682 | 10 | 71 |
| 286 | Organic Chemistry | 17 | 681 | 1,465 | 1,158 |
| 287 | touch | 27 | 677 | 6 | 15 |
| 288 | Bioorganic chemistry | 9 | 676 | 1,634 | 1,036 |
| 289 | Materials Engineering | 48 | 674 | 22 | 39 |
| 290 | Data Mining | 34 | 673 | 85 | 245 |
| 290 | Multiphase Flow | 31 | 673 | 34 | 90 |
| 292 | Molecules | 27 | 668 | 480 | 454 |
| 293 | Plasma devices | 47 | 659 | 29 | 94 |
| 294 | Mechanics | 52 | 646 | 139 | 272 |
| 295 | structural stability | 23 | 630 | 50 | 93 |
| 296 | Structural health monitoring | 22 | 626 | 17 | 34 |
| 297 | Combinatorial chemistry | 18 | 618 | 192 | 280 |
| 298 | Toxicology | 31 | 617 | 1,428 | 1,837 |
| 299 | Luminescence | 26 | 612 | 288 | 229 |
| 300 | plasma spraying | 15 | 591 | 44 | 43 |
| 301 | Intelligent Control Systems | 60 | 588 | 54 | 107 |
| 302 | Geodesy | 25 | 573 | 102 | 121 |
| 303 | Aerospace Engineering | 67 | 568 | 9 | 21 |
| 304 | Nuclear Engineering | 52 | 565 | 256 | 323 |
| 304 | big data | 25 | 565 | 33 | 102 |
| 306 | Computer Engineering | 39 | 558 | 48 | 115 |
| 307 | Medical Technology | 24 | 549 | 361 | 456 |
| 308 | brain mapping | 14 | 548 | 236 | 288 |
| 309 | Virology | 3 | 546 | 2,217 | 1,364 |
| 310 | Visual Communication | 37 | 540 | 17 | 42 |
| 310 | Image enhancement | 37 | 540 | 17 | 42 |
| 312 | Adhesion | 20 | 536 | 96 | 83 |
| 312 | adhesives | 20 | 536 | 105 | 84 |
| 314 | Environmental Toxicology | 20 | 523 | 795 | 1,088 |
| 315 | micromechanics | 28 | 522 | 93 | 160 |
| 315 | Microscopy | 36 | 522 | 217 | 359 |
| 317 | environmental indicators | 7 | 521 | 724 | 472 |
| 318 | Chemical analysis | 11 | 516 | 509 | 350 |
| 319 | Energy Consumption | 10 | 507 | 135 | 172 |
| 320 | Humanities | 22 | 504 | 393 | 247 |
| 321 | Industrial Microbiology | 17 | 503 | 688 | 877 |
| 322 | Nonlinear functional analysis | 33 | 502 | 176 | 262 |
| 323 | Imaging systems | 52 | 494 | 26 | 77 |
| 324 | Education | 16 | 491 | 1,592 | 1,147 |
| 325 | Navigation | 42 | 490 | 22 | 32 |
| 326 | Bone diseases | 4 | 483 | 365 | 232 |
| 327 | World Wide Web | 24 | 477 | 30 | 30 |
| 328 | Technology Assessment | 6 | 475 | 178 | 113 |
| 329 | Molecular Spectroscopy | 25 | 471 | 509 | 631 |
| 330 | Surface-Active Agents | 12 | 468 | 416 | 443 |
| 330 | Surface properties | 12 | 468 | 455 | 497 |
| 332 | Calorimetry | 23 | 463 | 253 | 258 |
| 332 | Thermal analysis | 23 | 463 | 253 | 258 |
| 334 | Signal Transduction | 6 | 461 | 909 | 720 |
| 335 | Evolutionary Computation | 18 | 460 | 88 | 252 |
| 336 | Electrochemical Analysis | 21 | 459 | 521 | 596 |
| 337 | Environmental pollutants | 19 | 455 | 764 | 1,039 |
| 338 | radar | 38 | 444 | 13 | 24 |
| 338 | Sonar | 38 | 444 | 13 | 19 |
| 338 | pigments | 12 | 444 | 330 | 259 |
| 341 | Radiation | 41 | 439 | 403 | 697 |
| 342 | Celestial Mechanics | 19 | 435 | 48 | 52 |
| 343 | United States | 22 | 434 | 1,784 | 1,871 |
| 344 | Metabolism | 14 | 427 | 1,027 | 1,218 |
| 345 | Strategic planning | 7 | 426 | 428 | 263 |
| 345 | Sonochemistry | 9 | 426 | 261 | 314 |
| 345 | Roads | 24 | 426 | 211 | 211 |
| 348 | environmental exposure | 17 | 423 | 656 | 870 |
| 349 | Cognitive Radio Networks | 18 | 421 | 31 | 50 |
| 350 | Ergonomics | 27 | 409 | 238 | 313 |
| 351 | Mineralogy | 14 | 408 | 622 | 591 |
| 352 | Neurons | 1 | 404 | 759 | 598 |
| 353 | Electromagnetic compatibility | 42 | 398 | 29 | 86 |
| 354 | Lightweight Materials | 19 | 392 | 5 | 5 |
| 355 | pollutants | 16 | 389 | 683 | 977 |
| 356 | Artificial Organs | 20 | 383 | 159 | 168 |
| 357 | Traffic Engineering | 9 | 375 | 177 | 192 |
| 358 | radiative transfer | 32 | 372 | 104 | 197 |
| 359 | Developing countries | 23 | 365 | 662 | 956 |
| 360 | Functional Analysis | 21 | 364 | 466 | 483 |
| 361 | Plant physiology | 6 | 362 | 1,492 | 1,237 |
| 362 | Business | 13 | 359 | 1,041 | 1,311 |
| 362 | Cancer | 9 | 359 | 1,479 | 1,521 |
| 364 | fusion reactors | 27 | 358 | 95 | 88 |
| 365 | Systems Theory | 13 | 351 | 83 | 33 |
| 366 | Linguistics | 23 | 350 | 421 | 490 |
| 367 | Genomics | 17 | 349 | 1,173 | 1,472 |
| 367 | Vocational guidance | 2 | 349 | 1,066 | 487 |
| 369 | Social Change | 5 | 348 | 791 | 710 |
| 370 | Hydrology | 18 | 346 | 946 | 1,148 |
| 371 | Crystal growth | 9 | 343 | 590 | 456 |
| 372 | Antioxidants | 3 | 342 | 696 | 501 |
| 372 | mathematical concepts | 19 | 342 | 69 | 70 |
| 372 | Oxidation-reduction | 3 | 342 | 741 | 591 |
| 375 | Interfaces | 15 | 338 | 36 | 51 |
| 376 | Turbulence | 16 | 336 | 52 | 64 |
| 377 | Sociology | 12 | 335 | 1,462 | 1,285 |
| 377 | city planning | 10 | 335 | 841 | 711 |
| 379 | Nuclear Medicine | 10 | 332 | 443 | 403 |
| 379 | Molecular Imaging | 10 | 332 | 285 | 321 |
| 381 | Telecommunications | 14 | 326 | 203 | 151 |
| 381 | Welding | 24 | 326 | 33 | 22 |
| 383 | Sound | 31 | 325 | 201 | 357 |
| 384 | Econometrics | 24 | 324 | 417 | 569 |
| 385 | Differential Equations | 22 | 322 | 312 | 399 |
| 386 | Nanophotonics | 16 | 315 | 71 | 161 |
| 387 | Economic Development | 9 | 313 | 829 | 901 |
| 388 | Astrodynamics | 21 | 310 | 1 | 5 |
| 388 | Flexible electronics | 6 | 310 | 24 | 38 |
| 390 | space environment | 17 | 302 | 44 | 65 |
| 391 | Microstructure | 25 | 301 | 113 | 184 |
| 392 | econometric models | 15 | 291 | 109 | 231 |
| 392 | Cerebral cortex | 15 | 291 | 370 | 565 |
| 394 | Genetics | 11 | 286 | 1,654 | 1,983 |
| 394 | Neurophysiology | 23 | 286 | 989 | 1,528 |
| 396 | Optoelectronics | 49 | 284 | 27 | 73 |
| 397 | Swarm Intelligence | 9 | 283 | 79 | 132 |
| 397 | Cell death | 5 | 283 | 803 | 805 |
| 399 | Plants | 3 | 282 | 1,962 | 1,217 |
| 400 | Proteomics | 6 | 278 | 698 | 637 |
| 400 | Iron | 24 | 278 | 56 | 103 |
| 402 | Integrated Circuits | 22 | 277 | 172 | 130 |
| 403 | Geographic information systems | 19 | 276 | 269 | 381 |
| 404 | Financial management | 6 | 275 | 286 | 290 |
| 405 | Embedded Systems | 4 | 273 | 168 | 58 |
| 405 | Plasma chemistry | 15 | 273 | 98 | 161 |
| 405 | Capital market | 12 | 273 | 114 | 195 |
| 408 | Plant Ecology | 2 | 270 | 1,879 | 1,140 |
| 408 | plant molecular biology | 2 | 270 | 1,610 | 1,099 |
| 410 | Industrial Design | 18 | 267 | 35 | 105 |
| 410 | Bones | 10 | 267 | 333 | 495 |
| 412 | Social policy | 8 | 266 | 584 | 404 |
| 413 | Nonlinear mechanics | 27 | 264 | 45 | 157 |
| 414 | Regional Planning | 5 | 262 | 1,135 | 782 |
| 415 | Public Health | 12 | 260 | 2,504 | 2,646 |
| 416 | Ferroelectricity | 16 | 259 | 391 | 345 |
| 417 | Hydrodynamics | 6 | 253 | 407 | 346 |
| 418 | Metabolic diseases | 3 | 252 | 1,664 | 1,307 |
| 419 | Cloud Computing | 12 | 251 | 77 | 120 |
| 419 | Applied Linguistics | 10 | 251 | 254 | 222 |
| 421 | Petroleum Engineering | 7 | 250 | 413 | 336 |
| 421 | Liquid Crystals | 22 | 250 | 252 | 227 |
| 423 | Meteorology | 8 | 248 | 1,279 | 1,393 |
| 424 | Project Management | 3 | 243 | 275 | 268 |
| 424 | Urban Policy | 7 | 243 | 488 | 475 |
| 426 | Chemical industry | 21 | 242 | 363 | 527 |
| 426 | carbon monoxide | 2 | 242 | 460 | 212 |
| 428 | Developmental Biology | 5 | 240 | 1,357 | 1,270 |
| 428 | Food service management | 3 | 240 | 416 | 361 |
| 430 | Futures | 11 | 237 | 83 | 121 |
| 431 | Wireless Communication | 25 | 236 | 23 | 91 |
| 432 | Radio wave propagation | 28 | 231 | 135 | 272 |
| 433 | Geotechnical Engineering | 3 | 230 | 468 | 262 |
| 434 | Transportation Engineering | 7 | 228 | 197 | 189 |
| 434 | Risk assessment | 23 | 228 | 57 | 197 |
| 434 | global environmental change | 7 | 228 | 453 | 614 |
| 437 | soil conservation | 2 | 225 | 1,010 | 447 |
| 437 | soil pollution | 2 | 225 | 750 | 223 |
| 439 | Oral Medicine | 3 | 224 | 748 | 255 |
| 440 | Orthopedics | 17 | 223 | 540 | 770 |
| 441 | Risk Management | 7 | 221 | 358 | 336 |
| 441 | Biomolecules | 6 | 221 | 255 | 329 |
| 443 | Pharmacology | 17 | 218 | 2,015 | 2,686 |
| 443 | Information visualization | 13 | 218 | 27 | 15 |
| 443 | Risk | 8 | 218 | 271 | 329 |
| 446 | Asia | 16 | 217 | 1,044 | 1,209 |
| 446 | planning | 5 | 217 | 544 | 306 |
| 446 | Radio frequency | 12 | 217 | 182 | 241 |
| 449 | Bioenergetics | 6 | 216 | 550 | 577 |
| 449 | Cell differentiation | 8 | 216 | 833 | 1,108 |
| 451 | Ecological Engineering | 14 | 214 | 141 | 479 |
| 451 | Money | 4 | 214 | 281 | 211 |
| 453 | Microbial Ecology | 7 | 212 | 1,354 | 1,663 |
| 454 | Probability | 6 | 211 | 372 | 314 |
| 454 | Granular materials | 6 | 211 | 356 | 314 |
| 456 | exobiology | 5 | 210 | 187 | 230 |
| 457 | Superconductivity | 15 | 208 | 138 | 179 |
| 458 | Australia | 15 | 205 | 669 | 876 |
| 459 | Discourse Analysis | 9 | 204 | 156 | 195 |
| 459 | data protection | 17 | 204 | 74 | 181 |
| 461 | Educational Technology | 11 | 203 | 759 | 1,013 |
| 462 | Economic planning | 5 | 202 | 357 | 261 |
| 463 | reasoning | 3 | 201 | 428 | 177 |
| 464 | radioactive waste | 4 | 200 | 683 | 840 |
| 464 | industrial waste | 4 | 200 | 713 | 840 |
| 464 | Hazardous waste | 4 | 200 | 820 | 896 |
| 467 | Transnational corporations | 8 | 196 | 118 | 196 |
| 468 | Finite Element Method | 6 | 195 | 192 | 139 |
| 469 | Social Psychology | 12 | 194 | 1,066 | 1,442 |
| 469 | Thrombosis | 6 | 194 | 656 | 677 |
| 471 | Systems Biology | 10 | 191 | 732 | 932 |
| 472 | Oncology | 7 | 190 | 1,171 | 1,617 |
| 473 | Land Use Planning | 1 | 188 | 636 | 289 |
| 474 | Avionics | 13 | 186 | 18 | 37 |
| 474 | Nanobiotechnology | 8 | 186 | 161 | 408 |
| 474 | indoor air pollution | 7 | 186 | 183 | 232 |
| 474 | Ventilation | 7 | 186 | 278 | 263 |
| 474 | Sick building syndrome | 7 | 186 | 183 | 232 |
| 479 | marketing | 3 | 185 | 1,832 | 1,367 |
| 480 | proteins | 4 | 184 | 1,567 | 1,239 |
| 481 | optical devices | 9 | 181 | 189 | 221 |
| 481 | Microwave devices | 12 | 181 | 200 | 271 |
| 483 | microwave communication systems | 10 | 178 | 163 | 226 |
| 484 | Genetic algorithms | 9 | 177 | 133 | 349 |
| 484 | Proteome | 3 | 177 | 1,011 | 863 |
| 486 | Brain | 22 | 175 | 936 | 1,707 |
| 486 | population geography | 8 | 175 | 177 | 228 |
| 488 | Geometry | 12 | 174 | 595 | 442 |
| 488 | genome | 9 | 174 | 742 | 1,221 |
| 490 | Agricultural Chemistry | 5 | 173 | 1,727 | 1,639 |
| 490 | Organometallic chemistry | 14 | 173 | 990 | 1,251 |
| 490 | Japan | 13 | 173 | 716 | 900 |
| 493 | Environmental Psychology | 1 | 172 | 661 | 374 |
| 493 | economic analysis | 10 | 172 | 64 | 126 |
| 495 | Health Policy | 5 | 171 | 1,520 | 1,266 |
| 495 | insurance | 2 | 171 | 475 | 182 |
| 497 | Global Health | 2 | 170 | 1,298 | 526 |
| 497 | Brain-Computer Interfaces | 7 | 170 | 6 | 8 |
| 497 | Bibliometrics | 4 | 170 | 105 | 86 |
| 500 | Oceanography | 4 | 168 | 1,359 | 1,156 |
| 500 | Aerosols | 11 | 168 | 224 | 338 |
| 500 | Optoelectronic devices | 11 | 168 | 409 | 371 |
| 503 | Digital Media | 6 | 167 | 95 | 117 |
| 504 | Civil Engineering | 15 | 161 | 580 | 616 |
| 504 | Sleep Disorders | 8 | 161 | 818 | 921 |
| 504 | Sleep | 8 | 161 | 824 | 928 |
| 507 | Multiscale Modeling | 7 | 160 | 18 | 11 |
| 508 | Psychiatry | 10 | 157 | 2,037 | 2,516 |
| 508 | Nanoelectronics | 10 | 157 | 376 | 352 |
| 508 | Tunneling | 8 | 157 | 171 | 321 |
| 508 | underground construction | 8 | 157 | 171 | 321 |
| 512 | Physiology | 13 | 154 | 1,892 | 2,681 |
| 512 | Hemostasis | 4 | 154 | 561 | 449 |
| 514 | Anatomy | 4 | 153 | 1,566 | 1,253 |
| 514 | Radiation effects | 12 | 153 | 188 | 542 |
| 514 | language | 3 | 153 | 803 | 608 |
| 517 | food technology | 7 | 152 | 1,705 | 2,034 |
| 518 | Sports Medicine | 12 | 151 | 1,224 | 1,450 |
| 519 | Pharmacognosy | 5 | 150 | 1,444 | 1,563 |
| 519 | Medicinal plants | 5 | 150 | 1,012 | 1,216 |
| 521 | Food | 5 | 149 | 2,368 | 2,394 |
| 522 | Neuroplasticity | 13 | 148 | 26 | 196 |
| 522 | movement | 2 | 148 | 428 | 267 |
| 524 | Land use | 1 | 146 | 1,794 | 942 |
| 524 | aerosol | 9 | 146 | 180 | 255 |
| 524 | Muscle contraction | 21 | 146 | 20 | 38 |
| 527 | Multilingualism | 3 | 144 | 276 | 178 |
| 528 | Nutrition | 4 | 143 | 3,049 | 2,838 |
| 528 | Combinatorial optimization | 22 | 143 | 49 | 144 |
| 528 | Agriculture | 8 | 143 | 1,233 | 1,515 |
| 531 | Immunotherapy | 5 | 142 | 1,213 | 1,361 |
| 531 | Homeostasis | 1 | 142 | 612 | 733 |
| 531 | Cell metabolism | 1 | 142 | 1,017 | 826 |
| 534 | soil microbiology | 3 | 141 | 1,336 | 1,461 |
| 535 | Stem cells | 8 | 140 | 750 | 1,032 |
| 536 | Drug delivery systems | 4 | 139 | 1,325 | 1,328 |
| 537 | Transport | 2 | 138 | 699 | 497 |
| 538 | Magnetism | 8 | 137 | 55 | 26 |
| 539 | Bioprinting | 8 | 136 | 13 | 38 |
| 540 | Environmental Microbiology | 4 | 134 | 1,123 | 1,334 |
| 541 | Cognitive neuroscience | 12 | 133 | 465 | 860 |
| 542 | Climatology | 4 | 132 | 1,485 | 1,439 |
| 543 | Protective coatings | 5 | 130 | 88 | 34 |
| 544 | Real-time Data Processing | 3 | 129 | 113 | 65 |
| 544 | Harmonic Analysis | 6 | 129 | 87 | 127 |
| 546 | Vision | 2 | 128 | 725 | 564 |
| 547 | Raman spectroscopy | 6 | 127 | 516 | 611 |
| 547 | eye | 1 | 127 | 343 | 348 |
| 547 | human development | 11 | 127 | 371 | 714 |
| 550 | Endocrinology | 4 | 126 | 1,975 | 2,057 |
| 551 | Mining Engineering | 3 | 125 | 515 | 389 |
| 552 | pain | 1 | 123 | 1,664 | 1,068 |
| 553 | Neurochemistry | 16 | 122 | 974 | 1,750 |
| 553 | Bifurcation Theory | 5 | 122 | 154 | 154 |
| 555 | Marine Biology | 3 | 120 | 2,253 | 1,983 |
| 555 | Marine Pollution | 3 | 120 | 1,195 | 1,169 |
| 555 | Atomic spectroscopy | 14 | 120 | 483 | 814 |
| 558 | Orthopedic Surgery | 9 | 119 | 385 | 525 |
| 559 | Immunology | 5 | 117 | 2,024 | 2,270 |
| 559 | Analytical Biochemistry | 13 | 117 | 750 | 1,312 |
| 559 | Sensor Networks | 9 | 117 | 71 | 144 |
| 559 | Porous materials | 8 | 117 | 370 | 472 |
| 563 | Neuropsychology | 16 | 116 | 928 | 1,696 |
| 563 | drug development | 1 | 116 | 1,333 | 989 |
| 563 | gene mapping | 11 | 116 | 882 | 1,697 |
| 566 | Pharmaceutical Chemistry | 6 | 115 | 2,335 | 2,636 |
| 566 | probabilities | 13 | 115 | 669 | 750 |
| 566 | natural gas | 4 | 115 | 277 | 323 |
| 569 | supercritical fluids | 3 | 114 | 391 | 395 |
| 569 | Respiration | 6 | 114 | 940 | 1,166 |
| 569 | Philippines | 3 | 114 | 100 | 63 |
| 572 | Geriatrics | 10 | 113 | 1,415 | 1,919 |
| 572 | X-rays | 8 | 113 | 252 | 327 |
| 574 | Clinical Chemistry | 4 | 112 | 1,946 | 2,042 |
| 574 | Chromosome mapping | 10 | 112 | 853 | 1,540 |
| 574 | Cognition | 16 | 112 | 738 | 1,345 |
| 577 | Electromagnetic waves | 11 | 111 | 75 | 183 |
| 577 | Microorganisms | 5 | 111 | 749 | 1,096 |
| 579 | Photochemistry | 7 | 110 | 1,100 | 1,436 |
| 579 | Quantum Optics | 14 | 110 | 353 | 624 |
| 581 | Molecular structure | 6 | 107 | 1,779 | 1,836 |
| 581 | drug evaluation | 4 | 107 | 1,057 | 1,101 |
| 583 | Astrocytes | 1 | 106 | 652 | 561 |
| 583 | Mineral resources | 5 | 106 | 429 | 691 |
| 585 | hazard mitigation | 7 | 104 | 505 | 889 |
| 585 | natural disasters | 7 | 104 | 806 | 1,246 |
| 587 | Psychophysiology | 7 | 103 | 1,657 | 2,185 |
| 588 | Bioinorganic chemistry | 4 | 102 | 1,221 | 1,238 |
| 588 | East Asia | 12 | 102 | 190 | 322 |
| 590 | Production Planning | 5 | 101 | 170 | 340 |
| 590 | Highway Engineering | 4 | 101 | 321 | 293 |
| 590 | Production Control | 5 | 101 | 167 | 340 |
| 593 | calcification | 6 | 100 | 314 | 474 |
| 593 | Catalysts | 5 | 100 | 518 | 589 |
| 595 | Laser Spectroscopy | 13 | 99 | 321 | 615 |
| 595 | Spine | 4 | 99 | 515 | 633 |
| 597 | Nuclear Energy | 14 | 98 | 385 | 660 |
| 597 | Genetic engineering | 5 | 98 | 1,464 | 1,775 |
| 597 | Psychometrics | 2 | 98 | 515 | 394 |
| 597 | Green Technology | 6 | 98 | 174 | 358 |
| 597 | Therapeutics | 2 | 98 | 1,565 | 1,385 |
| 597 | biological monitoring | 3 | 98 | 489 | 489 |
| 603 | Landscape Ecology | 1 | 97 | 730 | 527 |
| 603 | Cell division | 2 | 97 | 449 | 403 |
| 605 | atmospheric models | 4 | 96 | 520 | 670 |
| 605 | civil service | 2 | 96 | 446 | 327 |
| 607 | Algorithms | 17 | 95 | 169 | 513 |
| 607 | Photobiology | 5 | 95 | 1,043 | 1,258 |
| 607 | Electromagnetic fields | 17 | 95 | 57 | 97 |
| 607 | explosives | 4 | 95 | 135 | 88 |
| 607 | cultural pluralism | 1 | 95 | 764 | 309 |
| 612 | Applied Mathematics | 3 | 94 | 235 | 23 |
| 613 | textile fibers | 10 | 93 | 157 | 263 |
| 614 | Solar System | 6 | 92 | 514 | 680 |
| 615 | Chromatographic analysis | 4 | 91 | 1,570 | 1,455 |
| 616 | Pathology | 7 | 90 | 1,116 | 1,598 |
| 616 | Soil Science | 2 | 90 | 2,060 | 1,756 |
| 616 | Financial Engineering | 7 | 90 | 17 | 153 |
| 616 | North America | 7 | 90 | 465 | 614 |
| 620 | Eastern Europe | 10 | 89 | 323 | 462 |
| 620 | concrete | 4 | 89 | 815 | 1,097 |
| 622 | Cardiovascular system | 5 | 88 | 913 | 1,430 |
| 623 | Cryptography | 18 | 87 | 143 | 375 |
| 623 | air quality management | 4 | 87 | 409 | 548 |
| 625 | Ubiquitous computing | 8 | 86 | 65 | 107 |
| 625 | body temperature | 5 | 86 | 346 | 491 |
| 627 | Zoology | 2 | 85 | 2,640 | 1,857 |
| 627 | Quality Management | 8 | 85 | 61 | 107 |
| 629 | Occupational Therapy | 5 | 84 | 751 | 574 |
| 629 | Occupational Health | 5 | 84 | 766 | 816 |
| 629 | industrial hygiene | 5 | 84 | 755 | 635 |
| 629 | gene therapy | 1 | 84 | 1,236 | 953 |
| 629 | personality | 3 | 84 | 1,414 | 1,539 |
| 629 | identity recognition | 6 | 84 | 10 | 36 |
| 635 | Electrophoresis | 3 | 83 | 1,533 | 1,450 |
| 635 | microwave antennas | 14 | 83 | 88 | 247 |
| 635 | commerce | 9 | 83 | 858 | 1,410 |
| 635 | Refractory materials | 14 | 83 | 33 | 39 |
| 639 | Neuroimaging | 6 | 82 | 172 | 233 |
| 639 | Noise | 12 | 82 | 30 | 72 |
| 641 | Hypertension | 3 | 81 | 1,140 | 1,455 |
| 641 | Freezing | 7 | 81 | 141 | 183 |
| 641 | Diet | 1 | 81 | 2,516 | 2,156 |
| 641 | cell interaction | 2 | 81 | 1,119 | 1,110 |
| 641 | Cell communication | 2 | 81 | 705 | 769 |
| 646 | Cosmology | 2 | 80 | 750 | 575 |
| 646 | Herbal medicine | 2 | 80 | 911 | 981 |
| 646 | Cellulose | 3 | 80 | 613 | 738 |
| 649 | Greenhouse gases | 3 | 79 | 274 | 399 |
| 649 | Hemodynamics | 2 | 79 | 666 | 796 |
| 649 | analysis | 6 | 79 | 256 | 405 |
| 652 | water supply | 6 | 78 | 581 | 985 |
| 653 | Hydraulic Engineering | 5 | 77 | 657 | 785 |
| 653 | Microcirculation | 2 | 77 | 549 | 466 |
| 653 | Chromatography | 2 | 77 | 1,799 | 1,457 |
| 653 | locomotion | 5 | 77 | 463 | 657 |
| 653 | Microfluidics | 4 | 77 | 187 | 256 |
| 653 | posture | 5 | 77 | 463 | 657 |
| 653 | Blood vessels | 2 | 77 | 465 | 393 |
| 653 | traffic safety | 5 | 77 | 188 | 248 |
| 653 | gait | 5 | 77 | 463 | 657 |
| 653 | walking | 5 | 77 | 463 | 657 |
| 663 | Psychopharmacology | 1 | 76 | 1,776 | 1,396 |
| 663 | Socioeconomic Factors | 5 | 76 | 557 | 867 |
| 665 | Medical Microbiology | 2 | 75 | 2,064 | 2,115 |
| 665 | Number Theory | 24 | 75 | 196 | 439 |
| 665 | Input-output analysis | 4 | 75 | 176 | 257 |
| 665 | technical education | 6 | 75 | 428 | 616 |
| 669 | Geology | 13 | 74 | 1,451 | 2,358 |
| 669 | Epidemiology | 5 | 74 | 2,466 | 2,964 |
| 669 | educational planning | 3 | 74 | 409 | 471 |
| 672 | Calculus of Variations | 13 | 73 | 202 | 422 |
| 672 | Cardiovascular diseases | 3 | 73 | 1,311 | 1,264 |
| 674 | Pragmatics | 3 | 72 | 37 | 9 |
| 675 | Sarcopenia | 1 | 71 | 649 | 591 |
| 675 | Muscles | 1 | 71 | 1,091 | 896 |
| 677 | Software Maintenance | 10 | 70 | 28 | 133 |
| 678 | Pediatric Neurology | 2 | 69 | 828 | 1,023 |
| 678 | Urban Areas | 2 | 69 | 323 | 213 |
| 678 | Semiconductor industry | 6 | 69 | 377 | 482 |
| 681 | Radiation Oncology | 4 | 68 | 262 | 369 |
| 681 | Public Administration | 4 | 68 | 1,170 | 1,150 |
| 681 | Photogrammetry | 24 | 68 | 161 | 378 |
| 681 | nuclear astrophysics | 1 | 68 | 744 | 519 |
| 681 | dietary supplements | 1 | 68 | 1,448 | 1,066 |
| 681 | telemarketing | 3 | 68 | 85 | 167 |
| 687 | Feminist criticism | 1 | 67 | 265 | 86 |
| 687 | Government agencies | 1 | 67 | 121 | 57 |
| 687 | Aging | 8 | 67 | 1,484 | 2,193 |
| 690 | Surgery | 5 | 66 | 1,063 | 1,454 |
| 690 | Tissue Engineering | 5 | 66 | 242 | 419 |
| 690 | Powder Metallurgy | 4 | 66 | 160 | 93 |
| 690 | Machining | 5 | 66 | 66 | 125 |
| 690 | Plant diseases | 1 | 66 | 2,491 | 1,760 |
| 695 | Biopharmaceutics | 1 | 65 | 1,498 | 1,212 |
| 695 | behavioral medicine | 1 | 65 | 1,866 | 1,579 |
| 695 | Drug design | 1 | 65 | 2,193 | 1,619 |
| 695 | International Business | 1 | 65 | 406 | 153 |
| 699 | Geochemistry | 5 | 64 | 1,451 | 1,931 |
| 699 | Diagnosis | 5 | 64 | 247 | 404 |
| 699 | Multivariate Analysis | 7 | 64 | 345 | 541 |
| 699 | Fluorescence spectroscopy | 5 | 64 | 156 | 249 |
| 699 | optical instruments | 5 | 64 | 237 | 317 |
| 699 | optical phenomena | 5 | 64 | 72 | 128 |
| 699 | Oxidation | 5 | 64 | 95 | 171 |
| 699 | Culture | 2 | 64 | 1,290 | 853 |
| 707 | Total Quality Management | 2 | 63 | 767 | 693 |
| 707 | Sports | 4 | 63 | 1,750 | 1,737 |
| 709 | Neurobiology | 3 | 62 | 1,348 | 1,673 |
| 709 | Stochastic Processes | 4 | 62 | 810 | 847 |
| 709 | atmosphere | 3 | 62 | 750 | 949 |
| 709 | Creativity | 3 | 62 | 286 | 433 |
| 713 | Industrial Statistics | 3 | 61 | 210 | 137 |
| 713 | Architectural Design | 3 | 61 | 479 | 386 |
| 713 | Approximation Theory | 12 | 61 | 177 | 361 |
| 713 | freshwater biology | 1 | 61 | 1,448 | 1,033 |
| 713 | Immune system | 2 | 61 | 954 | 1,099 |
| 713 | Immunity | 2 | 61 | 1,631 | 1,901 |
| 719 | Developmental Psychology | 3 | 60 | 993 | 1,100 |
| 719 | Computational Mathematics | 1 | 60 | 215 | 145 |
| 719 | Urban Transportation | 3 | 60 | 123 | 108 |
| 719 | nucleic acids | 2 | 60 | 1,566 | 1,684 |
| 719 | health services | 1 | 60 | 1,631 | 1,069 |
| 719 | food industry | 2 | 60 | 1,025 | 826 |
| 725 | Geomorphology | 1 | 59 | 1,867 | 1,656 |
| 725 | Higher Education | 1 | 59 | 1,115 | 637 |
| 725 | Environmental Geology | 1 | 59 | 2,351 | 1,836 |
| 725 | tests | 1 | 59 | 374 | 293 |
| 729 | Climate | 3 | 58 | 570 | 787 |
| 730 | Agricultural Engineering | 3 | 57 | 439 | 570 |
| 730 | Geomagnetism | 3 | 57 | 579 | 647 |
| 732 | Language and Culture | 1 | 56 | 342 | 132 |
| 732 | air | 2 | 56 | 195 | 262 |
| 732 | Cement | 1 | 56 | 874 | 873 |
| 735 | Nanomedicine | 3 | 55 | 215 | 436 |
| 735 | Sintering | 3 | 55 | 38 | 24 |
| 735 | Written communication | 2 | 55 | 131 | 139 |
| 738 | Biomass | 2 | 54 | 875 | 1,098 |
| 739 | Cardiovascular Pharmacology | 1 | 52 | 450 | 365 |
| 739 | Algebra | 13 | 52 | 776 | 1,059 |
| 739 | Natural resources | 3 | 52 | 724 | 979 |
| 739 | Scheduling | 3 | 52 | 131 | 189 |
| 739 | Production Scheduling | 3 | 52 | 131 | 189 |
| 739 | income | 3 | 52 | 146 | 215 |
| 739 | Wealth | 3 | 52 | 146 | 215 |
| 746 | Requirements Engineering | 5 | 51 | 38 | 145 |
| 747 | Intercultural Communication | 1 | 50 | 836 | 571 |
| 747 | Graph Theory | 4 | 50 | 654 | 574 |
| 747 | Photography | 6 | 50 | 782 | 482 |
| 747 | Cross-Cultural Studies | 2 | 50 | 926 | 900 |
| 747 | disease susceptibility | 1 | 50 | 117 | 136 |
| 747 | biochemical markers | 1 | 50 | 1,036 | 760 |
| 747 | symptoms | 1 | 50 | 117 | 136 |
| 754 | Terahertz Technology | 5 | 49 | 102 | 237 |
| 754 | Business Ethics | 2 | 49 | 1,189 | 1,527 |
| 756 | Medical Oncology | 4 | 47 | 1,163 | 1,686 |
| 756 | Social behavior | 4 | 47 | 988 | 1,391 |
| 756 | sports injuries | 4 | 47 | 445 | 639 |
| 759 | Histology | 2 | 46 | 1,848 | 2,004 |
| 759 | curriculum evaluation | 1 | 46 | 702 | 503 |
| 759 | drug toxicity | 2 | 46 | 635 | 795 |
| 762 | Medical genetics | 3 | 45 | 1,738 | 2,396 |
| 762 | Food Microbiology | 1 | 45 | 1,796 | 1,819 |
| 762 | Operator theory | 4 | 45 | 369 | 315 |
| 762 | poverty | 2 | 45 | 551 | 599 |
| 762 | healthcare disparities | 2 | 45 | 621 | 679 |
| 762 | Friction | 5 | 45 | 59 | 248 |
| 768 | Mental Disorders | 4 | 44 | 2,061 | 2,780 |
| 768 | Research Design | 1 | 44 | 1,636 | 1,380 |
| 768 | Mass Spectrometry | 4 | 44 | 959 | 1,226 |
| 768 | Coding Theory | 7 | 44 | 209 | 335 |
| 768 | Visual Perception | 4 | 44 | 1,128 | 1,536 |
| 768 | Liposomes | 1 | 44 | 949 | 786 |
| 768 | Lipid bilayers | 1 | 44 | 790 | 636 |
| 768 | Aquaculture | 3 | 44 | 1,389 | 1,612 |
| 776 | phototherapy | 5 | 43 | 57 | 70 |
| 777 | Respiratory system | 2 | 42 | 631 | 773 |
| 777 | Memory | 2 | 42 | 1,611 | 1,819 |
| 777 | Attention | 2 | 42 | 1,540 | 1,678 |
| 777 | Perception | 2 | 42 | 1,644 | 1,721 |
| 781 | Urology | 2 | 41 | 1,311 | 1,382 |
| 781 | Radiobiology | 2 | 41 | 1,203 | 1,314 |
| 781 | Teaching | 4 | 41 | 1,523 | 1,923 |
| 781 | medical education | 3 | 41 | 1,576 | 1,863 |
| 785 | Evolutionary Genetics | 1 | 40 | 1,172 | 997 |
| 785 | Molecular Epidemiology | 1 | 40 | 1,172 | 997 |
| 785 | ecological risk assessment | 2 | 40 | 345 | 426 |
| 785 | Database Security | 7 | 40 | 22 | 106 |
| 785 | Methodology | 2 | 40 | 694 | 629 |
| 785 | Health Risk Assessment | 2 | 40 | 607 | 659 |
| 791 | Waste management | 3 | 39 | 1,423 | 1,767 |
| 791 | International Education | 2 | 39 | 330 | 367 |
| 791 | cytokines | 3 | 39 | 1,077 | 1,632 |
| 794 | Psychosomatic Medicine | 1 | 38 | 1,104 | 1,066 |
| 794 | Classification | 4 | 38 | 193 | 363 |
| 794 | Metrology | 7 | 38 | 26 | 57 |
| 797 | Social Networks | 2 | 37 | 422 | 523 |
| 797 | environmental issues | 1 | 37 | 801 | 786 |
| 799 | Immunopharmacology | 2 | 36 | 1,185 | 1,443 |
| 799 | Water quality management | 3 | 36 | 1,832 | 2,233 |
| 799 | arthritis | 2 | 36 | 1,001 | 1,349 |
| 802 | Drug targeting | 1 | 35 | 593 | 689 |
| 802 | Chemical kinetics | 5 | 35 | 578 | 809 |
| 802 | Textile industry | 3 | 35 | 495 | 531 |
| 802 | Primates | 3 | 35 | 698 | 883 |
| 806 | Psychoneuroimmunology | 1 | 34 | 871 | 1,030 |
| 806 | Underwater acoustics | 4 | 34 | 45 | 75 |
| 806 | Neuroimmunology | 1 | 34 | 967 | 1,118 |
| 806 | clay | 2 | 34 | 998 | 1,410 |
| 806 | Biometrics | 3 | 34 | 940 | 1,141 |
| 806 | Informatics | 4 | 34 | 747 | 1,211 |
| 812 | Radiology | 3 | 33 | 1,214 | 1,357 |
| 812 | Speech-Language Pathology | 4 | 33 | 220 | 435 |
| 812 | Aerodynamics | 5 | 33 | 63 | 45 |
| 812 | drug resistance | 1 | 33 | 1,192 | 1,181 |
| 812 | Spectroscopy | 8 | 33 | 55 | 92 |
| 812 | Marine resources | 3 | 33 | 667 | 1,114 |
| 812 | automatic speech recognition | 4 | 33 | 90 | 281 |
| 819 | Water Purification | 2 | 32 | 1,408 | 1,558 |
| 819 | Drying | 4 | 32 | 311 | 619 |
| 819 | Liver diseases | 1 | 32 | 1,439 | 1,541 |
| 822 | Actuarial Science | 1 | 31 | 442 | 373 |
| 822 | health services accessibility | 2 | 31 | 1,099 | 1,286 |
| 822 | nuclear magnetic resonance | 2 | 31 | 1,048 | 1,051 |
| 822 | Magnetic Resonance Spectroscopy | 2 | 31 | 1,218 | 1,215 |
| 822 | Plasma polymerization | 1 | 31 | 459 | 440 |
| 827 | Food Science | 1 | 30 | 500 | 339 |
| 827 | Cognitive Grammar | 6 | 30 | 25 | 121 |
| 827 | thinking | 2 | 30 | 433 | 622 |
| 827 | Vaccines | 1 | 30 | 2,196 | 2,166 |
| 831 | Planetary Science | 1 | 29 | 785 | 654 |
| 831 | Mathematical Economics | 2 | 29 | 384 | 426 |
| 831 | Lightweight concrete | 1 | 29 | 704 | 975 |
| 831 | Moon | 1 | 29 | 298 | 189 |
| 835 | Geography | 1 | 28 | 2,745 | 2,534 |
| 835 | Neurotoxicology | 2 | 28 | 705 | 1,132 |
| 835 | Apoptosis | 2 | 28 | 348 | 622 |
| 835 | neurotoxins | 2 | 28 | 348 | 622 |
| 835 | Neurotoxic agents | 2 | 28 | 348 | 622 |
| 835 | Structural Equation Modeling | 2 | 28 | 144 | 222 |
| 835 | Earthquakes | 1 | 28 | 623 | 529 |
| 835 | research and development | 3 | 28 | 311 | 647 |
| 835 | administrative agencies | 1 | 28 | 552 | 438 |
| 835 | Nerve regeneration | 2 | 28 | 348 | 622 |
| 845 | Neuropsychiatry | 1 | 27 | 1,118 | 1,115 |
| 845 | Soil dynamics | 2 | 27 | 622 | 841 |
| 845 | Climate change | 1 | 27 | 1,426 | 1,817 |
| 845 | Continuum Mechanics | 2 | 27 | 224 | 269 |
| 849 | Computational Chemistry | 3 | 26 | 688 | 1,044 |
| 849 | Plant Biotechnology | 2 | 26 | 939 | 1,247 |
| 849 | Sun | 1 | 26 | 496 | 452 |
| 852 | Structuralism | 1 | 25 | 290 | 386 |
| 852 | Bacteriology | 1 | 25 | 2,238 | 2,504 |
| 852 | innovation | 2 | 25 | 755 | 1,178 |
| 852 | libraries | 1 | 25 | 948 | 695 |
| 852 | cardiac catheterization | 2 | 25 | 643 | 655 |
| 852 | Europa | 2 | 25 | 626 | 806 |
| 858 | Expert Systems | 2 | 24 | 305 | 408 |
| 858 | Combinatorial analysis | 6 | 24 | 734 | 1,027 |
| 858 | Mental illness | 3 | 24 | 1,564 | 2,410 |
| 861 | emergency management | 1 | 23 | 1,199 | 1,266 |
| 861 | Electronic Packaging | 5 | 23 | 146 | 357 |
| 861 | Lattice Theory | 1 | 23 | 389 | 220 |
| 861 | Environmental Geochemistry | 1 | 23 | 1,128 | 1,172 |
| 861 | Cyberterrorism | 1 | 23 | 123 | 193 |
| 861 | ports | 2 | 23 | 278 | 448 |
| 861 | Library Science | 4 | 23 | 780 | 1,177 |
| 861 | Minerals | 1 | 23 | 1,427 | 1,452 |
| 861 | Egypt | 2 | 23 | 745 | 1,228 |
| 870 | animals | 1 | 22 | 1,816 | 1,648 |
| 870 | Dementia | 3 | 22 | 1,189 | 1,299 |
| 870 | Cheminformatics | 1 | 22 | 594 | 699 |
| 870 | Alzheimer's disease | 3 | 22 | 1,201 | 1,358 |
| 870 | Intellectual disability | 1 | 22 | 1,202 | 1,162 |
| 875 | Computational Linguistics | 6 | 21 | 310 | 814 |
| 875 | neuronal plasticity | 2 | 21 | 126 | 382 |
| 875 | Cell cycle | 3 | 21 | 280 | 612 |
| 875 | cell proliferation | 3 | 21 | 308 | 642 |
| 875 | bioluminescence | 2 | 21 | 510 | 612 |
| 875 | Industry | 1 | 21 | 443 | 721 |
| 875 | disease outbreaks | 1 | 21 | 764 | 919 |
| 875 | Epidemics | 1 | 21 | 723 | 901 |
| 875 | infrared technology | 3 | 21 | 204 | 261 |
| 875 | Flow cytometry | 3 | 21 | 335 | 630 |
| 885 | Psycholinguistics | 2 | 20 | 1,065 | 1,381 |
| 885 | Space telescopes | 3 | 20 | 164 | 237 |
| 885 | Sustainable agriculture | 1 | 20 | 1,288 | 1,380 |
| 885 | Shock Waves | 2 | 20 | 216 | 298 |
| 885 | toxicity testing | 1 | 20 | 1,089 | 1,293 |
| 885 | Mountains | 1 | 20 | 804 | 700 |
| 885 | Autonomous robots | 2 | 20 | 226 | 430 |
| 892 | Language Disorders | 2 | 19 | 924 | 1,184 |
| 892 | Naval Architecture | 3 | 19 | 408 | 558 |
| 892 | Precision medicine | 1 | 19 | 378 | 372 |
| 892 | Microbial Biotechnology | 2 | 19 | 1,298 | 1,930 |
| 892 | Industrial Ecology | 1 | 19 | 333 | 481 |
| 892 | occupational diseases | 1 | 19 | 1,200 | 1,453 |
| 892 | Mass Media | 5 | 19 | 621 | 926 |
| 892 | air quality | 2 | 19 | 334 | 667 |
| 892 | Germany | 2 | 19 | 810 | 686 |
| 892 | United Kingdom | 2 | 19 | 1,546 | 2,045 |
| 902 | consumer behavior | 2 | 18 | 707 | 1,225 |
| 902 | Semiotics | 3 | 18 | 379 | 403 |
| 902 | mental processes | 1 | 18 | 607 | 581 |
| 902 | child abuse | 2 | 18 | 940 | 1,465 |
| 906 | American Literature | 23 | 17 | 105 | 176 |
| 906 | Gerontology | 3 | 17 | 1,727 | 2,425 |
| 906 | Social work | 3 | 17 | 1,301 | 1,951 |
| 906 | High performance computing | 5 | 17 | 17 | 93 |
| 906 | sex differences | 1 | 17 | 287 | 395 |
| 906 | Exercise | 2 | 17 | 1,737 | 2,095 |
| 912 | Physical Therapy | 2 | 16 | 1,397 | 1,892 |
| 912 | Game Theory | 5 | 16 | 413 | 881 |
| 912 | Adsorption | 1 | 16 | 458 | 510 |
| 912 | Microfabrication | 6 | 16 | 188 | 694 |
| 912 | Thin Films | 4 | 16 | 438 | 896 |
| 912 | Knowledge management | 6 | 16 | 144 | 982 |
| 912 | Gene expression regulation | 2 | 16 | 1,057 | 1,535 |
| 912 | Crystallography | 5 | 16 | 1,330 | 1,748 |
| 912 | DNA methylation | 2 | 16 | 339 | 656 |
| 912 | Hormones | 2 | 16 | 1,232 | 1,816 |
| 912 | ecosystem | 2 | 16 | 1,465 | 2,291 |
| 912 | enzymes | 2 | 16 | 1,620 | 2,299 |
| 924 | Law | 3 | 15 | 1,258 | 1,318 |
| 924 | Physical organic chemistry | 2 | 15 | 1,635 | 2,124 |
| 924 | Nanomanufacturing | 5 | 15 | 66 | 163 |
| 924 | Animal welfare | 2 | 15 | 341 | 671 |
| 924 | nuclear power | 3 | 15 | 462 | 671 |
| 924 | Electrophysiology | 2 | 15 | 1,006 | 1,324 |
| 924 | clay minerals | 1 | 15 | 500 | 643 |
| 924 | Diplomatic relations | 2 | 15 | 795 | 754 |
| 924 | Insects | 2 | 15 | 1,640 | 2,064 |
| 924 | biomedicine | 1 | 15 | 893 | 1,200 |
| 924 | Entomology | 2 | 15 | 2,502 | 2,912 |
| 935 | Horticulture | 1 | 14 | 1,243 | 1,387 |
| 935 | Happiness | 1 | 14 | 871 | 1,149 |
| 935 | histological techniques | 1 | 14 | 886 | 1,141 |
| 935 | Child psychology | 2 | 14 | 1,526 | 2,211 |
| 935 | Writing | 1 | 14 | 514 | 644 |
| 935 | Quality of life | 1 | 14 | 2,150 | 2,602 |
| 935 | Reading | 1 | 14 | 932 | 1,049 |
| 935 | wood | 1 | 14 | 771 | 834 |
| 943 | Criminology | 2 | 13 | 1,076 | 1,367 |
| 943 | Comparative Education | 1 | 13 | 476 | 524 |
| 943 | Digital electronics | 4 | 13 | 254 | 537 |
| 943 | Education and globalization | 1 | 13 | 58 | 49 |
| 943 | preventive medicine | 2 | 13 | 1,252 | 1,972 |
| 943 | Electrocardiography | 1 | 13 | 538 | 524 |
| 943 | Synchrotron Radiation | 1 | 13 | 614 | 671 |
| 943 | Consumer Protection | 1 | 13 | 400 | 512 |
| 943 | Child Development | 1 | 13 | 2,360 | 2,687 |
| 943 | Consumer education | 1 | 13 | 736 | 1,049 |
| 943 | Aviation | 12 | 13 | 2 | 27 |
| 943 | disabilities | 2 | 13 | 840 | 1,321 |
| 943 | consumers | 1 | 13 | 753 | 918 |
| 943 | Transnational education | 1 | 13 | 58 | 49 |
| 943 | Evolution equations | 3 | 13 | 156 | 323 |
| 943 | Growth | 1 | 13 | 1,348 | 1,730 |
| 943 | ground penetrating radar | 5 | 13 | 20 | 166 |
| 943 | educational innovations | 1 | 13 | 965 | 1,131 |
| 961 | Medical Imaging | 1 | 12 | 372 | 439 |
| 961 | Magnetic Resonance Imaging | 1 | 12 | 620 | 751 |
| 961 | Cytogenetics | 1 | 12 | 1,672 | 2,047 |
| 961 | Microbial Genetics | 1 | 12 | 626 | 826 |
| 961 | Organizational change | 1 | 12 | 1,274 | 1,524 |
| 961 | Emergency Medicine | 1 | 12 | 1,614 | 1,725 |
| 961 | Online social networks | 1 | 12 | 635 | 793 |
| 961 | Adolescent | 2 | 12 | 2,251 | 3,052 |
| 961 | Vegetation | 1 | 12 | 233 | 262 |
| 961 | Chemical reactors | 2 | 12 | 232 | 298 |
| 971 | Maritime Law | 1 | 11 | 177 | 169 |
| 971 | Physical Geography | 2 | 11 | 633 | 1,069 |
| 971 | Neurosurgery | 2 | 11 | 947 | 1,432 |
| 971 | Language Acquisition | 1 | 11 | 613 | 686 |
| 971 | Immunopathology | 1 | 11 | 1,372 | 1,698 |
| 971 | Marine Conservation | 1 | 11 | 135 | 133 |
| 971 | Coastal zone management | 2 | 11 | 837 | 1,485 |
| 971 | Law of the Sea | 1 | 11 | 136 | 133 |
| 971 | Distributed Databases | 1 | 11 | 311 | 392 |
| 971 | Child welfare | 1 | 11 | 1,746 | 1,960 |
| 971 | Access to Information | 2 | 11 | 265 | 748 |
| 971 | Inflammation | 2 | 11 | 1,190 | 1,978 |
| 971 | Environmental risk assessment | 2 | 11 | 534 | 1,022 |
| 971 | cell physiology | 1 | 11 | 1,732 | 2,249 |
| 971 | Development | 1 | 11 | 1,251 | 1,601 |
| 971 | Economic Assistance | 1 | 11 | 1,141 | 1,488 |
| 971 | India | 4 | 11 | 1,269 | 2,324 |
| 971 | Information dissemination | 2 | 11 | 265 | 748 |
| 971 | world | 1 | 11 | 1,141 | 1,618 |
| 990 | Surveying | 2 | 10 | 175 | 275 |
| 990 | Cartography | 2 | 10 | 591 | 882 |
| 990 | Animal Behavior | 1 | 10 | 2,347 | 2,895 |
| 990 | Food Preservation | 2 | 10 | 1,041 | 1,585 |
| 990 | diffusion | 4 | 10 | 262 | 371 |
| 990 | Quantum Communication | 1 | 10 | 327 | 465 |
| 990 | Endocrine glands | 1 | 10 | 436 | 681 |
| 990 | Integrative Medicine | 1 | 10 | 535 | 624 |
| 990 | Cognitive Therapy | 1 | 10 | 993 | 1,282 |
| 990 | Health | 2 | 10 | 2,347 | 3,424 |
| 990 | Biofilms | 1 | 10 | 347 | 613 |