| 1 | Optical materials | 116 | 5.9K | 37 | 105 |
| 2 | Materials | 90 | 5.4K | 137 | 249 |
| 3 | Chemistry | 82 | 4.0K | 593 | 557 |
| 4 | Nanostructured Materials | 69 | 3.5K | 88 | 97 |
| 5 | Nanotechnology | 61 | 3.3K | 136 | 144 |
| 6 | Nanoparticles | 59 | 3.3K | 78 | 83 |
| 7 | Photonics | 68 | 1.6K | 9 | 66 |
| 8 | Control Theory | 84 | 1.5K | 12 | 12 |
| 9 | Nonlinear systems | 59 | 1.3K | 7 | 11 |
| 10 | Science | 25 | 829 | 646 | 1761 |
| 11 | fuel cells | 13 | 720 | 305 | 643 |
| 12 | Materials Science | 33 | 589 | 114 | 341 |
| 13 | Technological Innovations | 19 | 428 | 12 | 69 |
| 14 | Electromagnetism | 18 | 285 | 17 | 148 |
| 14 | Magnetic Materials | 18 | 285 | 31 | 180 |
| 16 | Microwaves | 79 | 260 | 3 | 20 |
| 17 | Quality Control | 17 | 255 | 34 | 87 |
| 18 | Telecommunication Systems | 65 | 253 | 2 | 37 |
| 19 | lasers | 19 | 251 | 28 | 160 |
| 20 | Optics | 68 | 242 | 35 | 226 |
| 21 | Chemical Engineering | 4 | 206 | 1388 | 1020 |
| 22 | Sustainable Engineering | 4 | 201 | 644 | 556 |
| 23 | Green Chemistry | 3 | 199 | 748 | 563 |
| 23 | Environment | 3 | 199 | 2048 | 2589 |
| 25 | Structural dynamics | 1 | 168 | 425 | 137 |
| 25 | vibration | 1 | 168 | 234 | 28 |
| 27 | pottery | 15 | 165 | 155 | 401 |
| 28 | Telecommunication | 32 | 164 | 16 | 97 |
| 29 | Ceramics | 14 | 161 | 178 | 415 |
| 29 | Glass | 14 | 161 | 174 | 424 |
| 31 | Adaptive control systems | 7 | 148 | 42 | 33 |
| 32 | Electrical Engineering | 31 | 147 | 26 | 107 |
| 32 | Electronics | 31 | 147 | 35 | 178 |
| 34 | Artificial Intelligence | 11 | 122 | 129 | 560 |
| 35 | Bioinformatics | 2 | 102 | 402 | 401 |
| 36 | Polymers | 15 | 93 | 647 | 2158 |
| 37 | Geophysics | 3 | 90 | 2362 | 3037 |
| 38 | Planets | 1 | 89 | 3031 | 2189 |
| 39 | Solid State Chemistry | 7 | 84 | 250 | 373 |
| 40 | Telecommunications | 21 | 83 | 10 | 159 |
| 41 | Physics | 13 | 81 | 685 | 3708 |
| 41 | Signal Processing | 15 | 81 | 28 | 102 |
| 43 | nanoscience | 2 | 79 | 370 | 564 |
| 44 | Organometallic chemistry | 7 | 77 | 421 | 620 |
| 45 | Bioinorganic chemistry | 6 | 76 | 245 | 323 |
| 46 | Earth Sciences | 2 | 65 | 550 | 508 |
| 47 | Fuzzy systems | 2 | 61 | 72 | 47 |
| 48 | Catalysis | 5 | 60 | 952 | 1795 |
| 49 | Solid State Physics | 9 | 54 | 214 | 647 |
| 49 | Image Processing | 12 | 54 | 40 | 269 |
| 51 | management | 7 | 49 | 214 | 1078 |
| 52 | Biology | 2 | 46 | 10984 | 12811 |
| 52 | Energy Storage | 5 | 46 | 176 | 651 |
| 52 | energy conservation | 5 | 46 | 168 | 713 |
| 55 | Decision making | 6 | 43 | 102 | 416 |
| 56 | Surface Chemistry | 2 | 41 | 680 | 875 |
| 56 | Electrochemistry | 2 | 41 | 1482 | 1670 |
| 56 | Colloids | 2 | 41 | 534 | 881 |
| 56 | polymerization | 11 | 41 | 631 | 2937 |
| 60 | Molecules | 1 | 38 | 218 | 334 |
| 60 | Cheminformatics | 1 | 38 | 219 | 351 |
| 60 | Molecular structure | 1 | 38 | 1737 | 1115 |
| 63 | Operations Research | 2 | 35 | 297 | 450 |
| 63 | Radio wave propagation | 16 | 35 | 15 | 257 |
| 65 | Mathematics | 15 | 34 | 783 | 2630 |
| 65 | Detectors | 2 | 34 | 40 | 52 |
| 67 | Data Mining | 2 | 33 | 157 | 423 |
| 68 | Power Electronics | 5 | 29 | 35 | 126 |
| 69 | Biophysics | 3 | 28 | 2260 | 5478 |
| 69 | microwave antennas | 13 | 28 | 7 | 39 |
| 69 | Research | 2 | 28 | 4885 | 8595 |
| 72 | Computer Science | 6 | 27 | 69 | 328 |
| 72 | Toxicology | 2 | 27 | 2083 | 4181 |
| 74 | Computer Vision | 9 | 26 | 23 | 280 |
| 75 | Raman spectroscopy | 2 | 25 | 197 | 526 |
| 76 | Educational Technology | 1 | 24 | 318 | 459 |
| 76 | educational innovations | 1 | 24 | 186 | 310 |
| 78 | Pharmaceutical Chemistry | 2 | 22 | 2105 | 3903 |
| 78 | Composite Materials | 1 | 22 | 628 | 829 |
| 78 | Biocompatible Materials | 1 | 22 | 2226 | 3466 |
| 78 | Luminescence | 3 | 22 | 214 | 495 |
| 78 | biological factors | 1 | 22 | 1484 | 2307 |
| 83 | China | 3 | 20 | 426 | 1175 |
| 83 | smart structures | 3 | 20 | 4 | 14 |
| 85 | Mathematical Physics | 2 | 19 | 583 | 895 |
| 85 | Plastics | 3 | 19 | 447 | 1654 |
| 85 | actuators | 3 | 19 | 130 | 472 |
| 85 | Statistical physics | 1 | 19 | 520 | 615 |
| 85 | transducers | 3 | 19 | 130 | 472 |
| 90 | Pharmaceutical Technology | 1 | 18 | 1031 | 1368 |
| 90 | catalytic activity | 1 | 18 | 861 | 1102 |
| 92 | Computational Linguistics | 2 | 17 | 55 | 202 |
| 93 | Computer Engineering | 1 | 16 | 47 | 78 |
| 93 | bioluminescence | 2 | 16 | 293 | 521 |
| 95 | Information Retrieval | 1 | 15 | 96 | 288 |
| 95 | particles | 1 | 15 | 491 | 948 |
| 97 | Spectrum analysis | 4 | 14 | 450 | 2215 |
| 98 | Sustainable Development | 1 | 13 | 670 | 1465 |
| 98 | environmental protection | 1 | 13 | 1395 | 2643 |
| 98 | nuclear magnetic resonance | 1 | 13 | 891 | 1381 |
| 98 | Social Change | 1 | 13 | 126 | 284 |
| 98 | Magnetic Resonance Spectroscopy | 1 | 13 | 1077 | 1617 |
| 98 | reasoning | 1 | 13 | 25 | 44 |
| 104 | food technology | 1 | 11 | 2958 | 5543 |
| 104 | radar | 1 | 11 | 82 | 82 |
| 104 | Sonar | 1 | 11 | 82 | 81 |
| 104 | Navigation | 1 | 11 | 108 | 141 |
| 108 | Software Engineering | 1 | 10 | 290 | 458 |
| 108 | Intelligent Transportation Systems | 1 | 10 | 157 | 303 |
| 108 | Wireless Communication Systems | 2 | 10 | 69 | 224 |
| 111 | Geriatrics | 1 | 9 | 3500 | 5983 |
| 111 | air quality management | 1 | 9 | 356 | 992 |
| 111 | infrared radiation | 2 | 9 | 25 | 87 |
| 111 | Gerontology | 1 | 9 | 793 | 1321 |
| 111 | indoor air pollution | 1 | 9 | 344 | 941 |
| 111 | Ventilation | 1 | 9 | 359 | 961 |
| 111 | Sick building syndrome | 1 | 9 | 344 | 941 |
| 111 | Aging | 1 | 9 | 1137 | 2014 |
| 119 | Systems Engineering | 2 | 8 | 233 | 543 |
| 119 | Veterinary Immunology | 1 | 8 | 32 | 91 |
| 119 | Multimedia Systems | 1 | 8 | 118 | 219 |
| 119 | multimedia | 1 | 8 | 26 | 43 |
| 119 | Interactive multimedia | 1 | 8 | 34 | 60 |
| 124 | Biochemistry | 1 | 7 | 11293 | 18851 |
| 124 | Information Technology | 2 | 7 | 293 | 1122 |
| 124 | Computational Chemistry | 2 | 7 | 257 | 920 |
| 124 | Molecular Biology | 1 | 7 | 14639 | 25971 |
| 124 | Forecasting | 2 | 7 | 117 | 498 |
| 124 | biomedicine | 1 | 7 | 159 | 469 |
| 130 | Hydrology | 1 | 6 | 2444 | 4981 |
| 130 | Engineering Mathematics | 1 | 6 | 1143 | 2191 |
| 130 | Regional Planning | 2 | 6 | 383 | 1474 |
| 130 | Medical Physics | 2 | 6 | 909 | 2826 |
| 130 | innovation | 1 | 6 | 155 | 449 |
| 130 | research and development | 1 | 6 | 87 | 300 |
| 136 | Robotics | 1 | 5 | 540 | 1216 |
| 137 | Geomorphology | 1 | 4 | 551 | 1339 |
| 137 | Environmental Toxicology | 1 | 4 | 889 | 2384 |
| 137 | Nonlinear functional analysis | 1 | 4 | 87 | 165 |
| 137 | Environmental Management | 1 | 4 | 809 | 2478 |
| 137 | Ceramic materials | 1 | 4 | 698 | 1468 |
| 137 | Environmental risk assessment | 1 | 4 | 116 | 467 |
| 137 | environmental control | 1 | 4 | 97 | 425 |
| 137 | environmental pollution | 1 | 4 | 1903 | 4492 |
| 137 | brain mapping | 1 | 4 | 1525 | 3313 |
| 137 | India | 1 | 4 | 240 | 352 |
| 137 | Pollution | 1 | 4 | 3537 | 7772 |
| 148 | Economics | 2 | 3 | 1425 | 3373 |
| 148 | Automation | 1 | 3 | 186 | 479 |
| 148 | Economic History | 1 | 3 | 1489 | 2668 |
| 148 | Numerical Analysis | 1 | 3 | 734 | 1754 |
| 148 | Number Theory | 3 | 3 | 251 | 900 |
| 148 | economic indicators | 1 | 3 | 92 | 174 |
| 148 | Renewable Energy Sources | 1 | 3 | 650 | 1759 |
| 148 | economic policy | 1 | 3 | 1214 | 2157 |
| 148 | Broadcasting | 1 | 3 | 88 | 218 |
| 148 | commerce | 1 | 3 | 276 | 698 |
| 148 | United States | 1 | 3 | 4932 | 9252 |
| 159 | Engineering | 1 | 2 | 1508 | 3513 |
| 159 | Environmental Engineering | 1 | 2 | 1325 | 3379 |
| 159 | Social Psychology | 1 | 2 | 1447 | 3318 |
| 159 | Environmental Chemistry | 1 | 2 | 1175 | 3101 |
| 159 | Asia | 1 | 2 | 1636 | 4028 |
| 159 | Quantum theory | 1 | 2 | 108 | 246 |
| 165 | Optoelectronics | 1 | 1 | 64 | 210 |
| 165 | Atmospheric Physics | 1 | 1 | 1499 | 3431 |
| 165 | Physical organic chemistry | 1 | 1 | 435 | 1076 |
| 165 | Organometallic compounds | 1 | 1 | 953 | 2097 |
| 165 | Condensed Matter | 1 | 1 | 471 | 907 |
| 165 | infrared technology | 1 | 1 | 16 | 38 |
| 171 | Higher Education | 1 | 0 | 145 | 531 |
| 171 | Engineering Geology | 1 | 0 | 201 | 649 |
| 171 | Remote Sensing | 1 | 0 | 169 | 419 |
| 171 | Photogrammetry | 1 | 0 | 118 | 325 |
| 171 | International Finance | 1 | 0 | 532 | 1345 |
| 171 | Natural history | 1 | 0 | 1285 | 3168 |
| 171 | Europe | 1 | 0 | 1165 | 3205 |
