| 1 | Chemistry | 680 | 26.1K | 585 | 655 |
| 2 | Materials | 737 | 24.8K | 212 | 299 |
| 3 | Nanotechnology | 420 | 17.2K | 255 | 326 |
| 4 | Chemical Engineering | 439 | 14.9K | 208 | 274 |
| 5 | Physics | 737 | 13.7K | 526 | 1,049 |
| 6 | Catalysis | 360 | 13.6K | 197 | 271 |
| 7 | Analytical Chemistry | 351 | 10.9K | 187 | 250 |
| 8 | Materials Science | 357 | 10.8K | 237 | 333 |
| 9 | Electrochemistry | 310 | 10.4K | 254 | 170 |
| 10 | Optical materials | 215 | 10.0K | 117 | 131 |
| 11 | Polymers | 438 | 9.2K | 228 | 345 |
| 12 | Biocompatible Materials | 186 | 8.6K | 355 | 398 |
| 13 | nanoscience | 166 | 8.6K | 194 | 225 |
| 14 | Biochemical Engineering | 223 | 8.3K | 169 | 327 |
| 15 | polymerization | 373 | 7.7K | 200 | 310 |
| 16 | Nanostructured Materials | 214 | 7.1K | 201 | 260 |
| 17 | Solid State Physics | 225 | 6.5K | 468 | 455 |
| 18 | Condensed Matter | 208 | 6.3K | 449 | 461 |
| 19 | Mathematics | 434 | 5.1K | 412 | 480 |
| 20 | Green Chemistry | 106 | 5.1K | 112 | 141 |
| 21 | Colloids | 179 | 4.8K | 365 | 499 |
| 22 | Surface Chemistry | 180 | 4.8K | 349 | 454 |
| 23 | Science | 93 | 4.2K | 1,677 | 1,786 |
| 24 | actuators | 102 | 4.0K | 147 | 148 |
| 24 | transducers | 102 | 4.0K | 147 | 148 |
| 26 | Biology | 63 | 4.0K | 1,873 | 1,728 |
| 27 | Environmental Management | 72 | 3.4K | 337 | 357 |
| 28 | Pollution | 76 | 3.3K | 1,031 | 1,088 |
| 29 | Environment | 78 | 3.3K | 847 | 1,088 |
| 30 | Magnetic Materials | 109 | 3.2K | 83 | 104 |
| 31 | Biochemistry | 115 | 2.9K | 1,610 | 1,752 |
| 32 | Energy Conversion | 52 | 2.8K | 161 | 274 |
| 33 | Sustainable Engineering | 63 | 2.8K | 160 | 171 |
| 34 | Numerical Analysis | 191 | 2.7K | 40 | 127 |
| 35 | Statistical physics | 65 | 2.6K | 827 | 636 |
| 36 | Ecology | 60 | 2.6K | 1,389 | 1,450 |
| 37 | China | 175 | 2.6K | 146 | 208 |
| 38 | Biotechnology | 67 | 2.6K | 1,171 | 1,259 |
| 39 | Metals | 79 | 2.5K | 268 | 313 |
| 40 | Solid State Chemistry | 115 | 2.4K | 222 | 254 |
| 41 | Energy Policy | 68 | 2.4K | 333 | 474 |
| 42 | Molecular Biology | 86 | 2.4K | 1,528 | 1,755 |
| 43 | Building Materials | 66 | 2.4K | 243 | 311 |
| 44 | fuel cells | 50 | 2.3K | 176 | 237 |
| 45 | environmental pollution | 53 | 2.3K | 984 | 949 |
| 46 | Optics | 77 | 2.3K | 900 | 668 |
| 47 | Bioengineering | 50 | 2.2K | 950 | 977 |
| 48 | Composite Materials | 63 | 2.2K | 487 | 592 |
| 49 | Bioinformatics | 57 | 2.2K | 310 | 364 |
| 50 | Biomedical Engineering | 115 | 2.1K | 642 | 970 |
| 51 | Systems Engineering | 62 | 2.1K | 235 | 204 |
| 52 | Evolutionary Computation | 38 | 2.1K | 36 | 79 |
| 53 | pigments | 92 | 2.1K | 21 | 26 |
| 54 | Metallurgy | 100 | 2.1K | 254 | 364 |
| 55 | Photonics | 71 | 1.9K | 296 | 432 |
| 56 | Environmental Chemistry | 24 | 1.9K | 543 | 457 |
| 57 | mass transfer | 52 | 1.9K | 272 | 273 |
| 58 | Biomass Energy | 45 | 1.8K | 452 | 550 |
| 59 | Pharmaceutical Technology | 42 | 1.8K | 227 | 182 |
| 60 | Spectrum analysis | 113 | 1.8K | 674 | 1,051 |
| 61 | catalytic activity | 41 | 1.8K | 59 | 57 |
| 62 | Astrophysics | 149 | 1.8K | 536 | 974 |
| 63 | Electronics | 83 | 1.8K | 569 | 612 |
| 64 | Signal Processing | 69 | 1.7K | 442 | 569 |
| 65 | coal | 50 | 1.7K | 226 | 287 |
| 66 | Nonlinear Dynamics | 29 | 1.7K | 685 | 437 |
| 67 | Nonlinear functional analysis | 18 | 1.6K | 380 | 39 |
| 68 | Astronomy | 134 | 1.6K | 506 | 860 |
| 69 | Computational Biology | 45 | 1.6K | 472 | 525 |
| 70 | Environmental Health | 41 | 1.6K | 1,400 | 1,384 |
| 71 | Industrial Engineering | 56 | 1.5K | 258 | 307 |
| 72 | Genetic algorithms | 14 | 1.5K | 85 | 90 |
| 73 | Bioorganic chemistry | 51 | 1.5K | 580 | 627 |
| 74 | Nanoparticles | 66 | 1.5K | 188 | 335 |
| 75 | mathematical analysis | 74 | 1.5K | 419 | 287 |
| 76 | Microelectronics | 28 | 1.5K | 523 | 457 |
| 77 | miniaturization | 35 | 1.5K | 431 | 520 |
| 78 | Toxicology | 38 | 1.5K | 1,264 | 1,143 |
| 79 | Organic Chemistry | 58 | 1.4K | 734 | 773 |
| 80 | Automation | 67 | 1.4K | 338 | 581 |
| 81 | Environmental monitoring | 23 | 1.4K | 1,404 | 1,080 |
| 82 | Physical organic chemistry | 51 | 1.4K | 146 | 147 |
| 83 | clay | 44 | 1.3K | 47 | 96 |
| 84 | Neural circuitry | 39 | 1.3K | 341 | 387 |
| 85 | Carbon | 31 | 1.3K | 247 | 363 |
| 86 | Multimedia Systems | 39 | 1.3K | 285 | 194 |
| 87 | Biosensors | 22 | 1.3K | 350 | 364 |
| 88 | computer networks | 37 | 1.2K | 587 | 521 |
| 89 | Membranes | 10 | 1.1K | 946 | 558 |
| 90 | Energy Storage | 45 | 1.1K | 161 | 277 |
| 91 | Heat Exchangers | 44 | 1.1K | 154 | 264 |
| 92 | Economics | 36 | 1.1K | 1,279 | 1,030 |
| 93 | Semiconductors | 69 | 1.1K | 232 | 280 |
| 94 | Artificial Intelligence | 51 | 1.1K | 851 | 1,062 |
| 95 | multimedia | 16 | 1.0K | 147 | 101 |
| 95 | Interactive multimedia | 16 | 1.0K | 157 | 102 |
| 97 | Environmental Policy | 28 | 1.0K | 944 | 1,093 |
| 98 | Manufacturing Processes | 59 | 1.0K | 374 | 580 |
| 99 | health planning | 70 | 1.0K | 185 | 348 |
| 100 | Electrical Engineering | 52 | 989 | 730 | 560 |
| 101 | Research | 55 | 977 | 1,980 | 2,390 |
| 102 | food technology | 15 | 967 | 1,146 | 741 |
| 103 | Image Processing | 53 | 941 | 391 | 662 |
| 104 | Wireless Communication Systems | 35 | 918 | 636 | 616 |
| 105 | Solitons | 38 | 913 | 118 | 147 |
| 105 | Fractals | 38 | 913 | 118 | 148 |
| 105 | Chaos | 38 | 913 | 118 | 147 |
| 108 | Information Science | 29 | 907 | 639 | 706 |
| 109 | energy conservation | 22 | 890 | 595 | 740 |
| 110 | Water | 15 | 867 | 1,077 | 982 |
| 111 | Environmental Engineering | 21 | 859 | 1,393 | 1,240 |
| 112 | Molecular structure | 41 | 839 | 482 | 640 |
| 113 | environmental protection | 31 | 813 | 975 | 1,206 |
| 114 | Fracture mechanics | 34 | 800 | 340 | 364 |
| 115 | Ceramic materials | 36 | 792 | 216 | 286 |
| 116 | Electrochemical Analysis | 38 | 753 | 294 | 412 |
| 117 | Water pollution | 16 | 749 | 1,200 | 1,083 |
| 118 | Engineering Mathematics | 52 | 740 | 243 | 376 |
| 119 | Control Theory | 53 | 734 | 316 | 466 |
| 120 | Plastics | 28 | 718 | 404 | 369 |
| 121 | System analysis | 41 | 704 | 475 | 674 |
| 122 | Solar Energy | 20 | 695 | 517 | 590 |
| 123 | Mobile Computing | 18 | 684 | 337 | 280 |
| 124 | Production Engineering | 51 | 679 | 325 | 488 |
| 125 | Ocean Engineering | 29 | 678 | 499 | 586 |
| 126 | Medicine | 25 | 674 | 3,241 | 3,360 |
| 127 | Physical Chemistry | 22 | 658 | 813 | 831 |
| 128 | finance | 25 | 656 | 763 | 772 |
| 129 | Bioelectronics | 11 | 648 | 508 | 547 |
| 130 | Renewable Energy Sources | 21 | 646 | 943 | 1,500 |
| 131 | Mathematical Physics | 40 | 643 | 837 | 892 |
| 132 | Nanostructures | 49 | 642 | 241 | 759 |
| 133 | Fuzzy systems | 30 | 640 | 267 | 220 |
| 134 | Structural Engineering | 33 | 624 | 417 | 532 |
| 135 | Molecular Spectroscopy | 35 | 622 | 358 | 480 |
| 136 | Nuclear Physics | 24 | 619 | 1,780 | 1,647 |
| 136 | energy resources | 9 | 619 | 744 | 731 |
| 138 | sanitation | 7 | 614 | 953 | 867 |
| 139 | Environmental Toxicology | 14 | 599 | 1,053 | 999 |
| 139 | Environmental pollutants | 14 | 599 | 968 | 844 |
| 141 | Functional Analysis | 14 | 598 | 649 | 323 |
| 142 | Pharmacology | 16 | 597 | 2,064 | 1,888 |
| 143 | lasers | 24 | 568 | 714 | 608 |
| 144 | Food | 11 | 567 | 1,654 | 1,353 |
| 145 | Swarm Intelligence | 24 | 563 | 21 | 78 |
| 146 | food handling | 5 | 561 | 656 | 272 |
| 147 | Engineering | 42 | 560 | 1,049 | 1,359 |
| 148 | Quality Control | 4 | 554 | 1,507 | 511 |
| 149 | Telecommunication | 22 | 538 | 949 | 975 |
| 150 | Nanochemistry | 20 | 517 | 277 | 254 |
| 151 | Bioinorganic chemistry | 28 | 499 | 404 | 540 |
| 152 | Chemical analysis | 21 | 495 | 265 | 368 |
| 153 | Earthquake Engineering | 20 | 491 | 514 | 583 |
| 154 | Mechanical Engineering | 36 | 486 | 636 | 702 |
| 155 | Ceramics | 18 | 471 | 498 | 458 |
| 156 | International Finance | 15 | 455 | 724 | 677 |
| 156 | Catalysts | 33 | 455 | 63 | 168 |
| 158 | Technology | 55 | 444 | 765 | 1,508 |
| 159 | Fractional Calculus | 9 | 434 | 20 | 17 |
| 160 | Chemical industry | 39 | 428 | 205 | 317 |
| 161 | Remote Sensing | 9 | 426 | 820 | 389 |
| 161 | Energy Harvesting | 8 | 426 | 231 | 330 |
| 163 | phase diagrams | 56 | 406 | 15 | 33 |
| 164 | Social Change | 6 | 373 | 706 | 681 |
| 165 | Zeolites | 19 | 368 | 249 | 450 |
| 166 | Economic History | 19 | 365 | 1,303 | 1,207 |
| 167 | pollutants | 9 | 362 | 1,037 | 1,030 |
| 167 | environmental exposure | 9 | 362 | 1,044 | 964 |
| 169 | Tourism | 14 | 353 | 670 | 961 |
| 170 | Luminescence | 21 | 348 | 356 | 414 |
| 171 | Ferroelectricity | 26 | 343 | 257 | 281 |
| 172 | Radio | 26 | 342 | 455 | 745 |
| 173 | Structural dynamics | 9 | 338 | 542 | 574 |
| 174 | particles | 25 | 331 | 161 | 336 |
| 175 | Glass | 11 | 326 | 499 | 489 |
| 175 | pottery | 11 | 326 | 474 | 484 |
| 177 | Sound | 22 | 325 | 278 | 357 |
| 178 | Ultrasonics | 21 | 324 | 322 | 671 |
| 178 | Ultrasound | 21 | 324 | 196 | 296 |
| 178 | Radio frequency | 21 | 324 | 110 | 190 |
| 181 | Cybernetics | 8 | 323 | 965 | 842 |
| 182 | Calorimetry | 10 | 315 | 569 | 382 |
| 182 | Thermal analysis | 10 | 315 | 569 | 382 |
| 184 | Microbiology | 13 | 308 | 2,843 | 3,201 |
| 185 | Industrial Microbiology | 13 | 306 | 828 | 1,173 |
| 186 | Business | 6 | 301 | 1,580 | 1,405 |
| 187 | Metallic Glasses | 14 | 300 | 148 | 194 |
| 187 | plasticity | 3 | 300 | 326 | 245 |
| 189 | Dynamics | 26 | 297 | 415 | 593 |
| 190 | Pharmaceutical Chemistry | 18 | 293 | 1,488 | 1,899 |
| 191 | Sustainable Development | 11 | 292 | 946 | 1,171 |
| 191 | Tribology | 14 | 292 | 473 | 535 |
| 193 | Engineering Geology | 16 | 289 | 549 | 776 |
| 194 | Information Theory | 15 | 286 | 583 | 692 |
| 194 | Internet of Things | 10 | 286 | 568 | 673 |
| 194 | internet | 10 | 286 | 806 | 861 |
| 197 | management | 12 | 277 | 1,785 | 2,001 |
| 198 | Civil Engineering | 13 | 272 | 650 | 419 |
| 199 | Nutrition | 3 | 271 | 3,335 | 2,277 |
| 200 | Detectors | 15 | 270 | 590 | 723 |
| 201 | Metallography | 17 | 268 | 234 | 382 |
| 202 | Algorithms | 28 | 262 | 65 | 238 |
| 202 | Entropy | 9 | 262 | 575 | 369 |
| 204 | vibration | 13 | 255 | 502 | 639 |
| 205 | Agricultural Chemistry | 14 | 253 | 998 | 1,376 |
| 206 | Earth Sciences | 15 | 249 | 1,508 | 1,785 |
| 207 | Measurement | 11 | 247 | 634 | 648 |
| 207 | Soft Condensed Matter | 11 | 247 | 542 | 610 |
| 207 | biopolymers | 11 | 247 | 574 | 673 |
| 210 | Chromatography | 22 | 242 | 463 | 771 |
| 210 | Chromatographic analysis | 22 | 242 | 579 | 863 |
| 212 | Fluid Mechanics | 13 | 240 | 704 | 784 |
| 213 | drug toxicity | 5 | 237 | 273 | 193 |
| 214 | Hydrology | 6 | 235 | 1,703 | 1,394 |
| 215 | Molecules | 10 | 233 | 872 | 745 |
| 216 | Electromagnetism | 18 | 232 | 333 | 494 |
| 217 | Information Technology | 11 | 228 | 1,225 | 1,393 |
| 218 | Telecommunication Systems | 11 | 227 | 823 | 755 |
| 219 | Fiber Optics | 12 | 226 | 424 | 472 |
| 220 | Combustion | 12 | 223 | 572 | 734 |
| 220 | economic policy | 11 | 223 | 1,248 | 1,049 |
| 222 | Geriatrics | 8 | 222 | 1,575 | 1,447 |
| 223 | Soil Mechanics | 14 | 217 | 470 | 665 |
| 224 | Microbial Biotechnology | 10 | 213 | 369 | 563 |
| 225 | Clinical Chemistry | 10 | 212 | 1,329 | 1,599 |
| 226 | Electrophoresis | 19 | 210 | 533 | 960 |
| 227 | Computer Graphics | 12 | 207 | 808 | 953 |
| 228 | solar power | 4 | 206 | 678 | 642 |
| 228 | Intelligent Control Systems | 23 | 206 | 201 | 331 |
| 228 | solar cells | 4 | 206 | 739 | 682 |
| 231 | Biophysics | 13 | 204 | 2,500 | 3,110 |
| 232 | Smart Materials | 11 | 203 | 427 | 517 |
| 233 | Organometallic chemistry | 18 | 195 | 837 | 1,166 |
| 234 | Analytical Biochemistry | 15 | 194 | 672 | 1,032 |
| 235 | Surface-Active Agents | 5 | 193 | 854 | 856 |
| 235 | Surface properties | 5 | 193 | 903 | 926 |
| 237 | Computational Fluid Dynamics | 12 | 191 | 243 | 367 |
| 238 | Integrated Circuits | 19 | 190 | 205 | 195 |
| 239 | Economic Development | 4 | 188 | 1,314 | 1,107 |
| 239 | Developing countries | 4 | 188 | 1,972 | 1,366 |
| 241 | Structural design | 10 | 187 | 400 | 508 |
| 242 | Cheminformatics | 2 | 186 | 417 | 288 |
| 243 | concrete | 10 | 183 | 466 | 860 |
| 244 | Intelligent Transportation Systems | 6 | 181 | 787 | 845 |
| 245 | Quantum theory | 7 | 177 | 697 | 592 |
| 246 | Gerontology | 7 | 175 | 1,164 | 1,004 |
| 246 | Aging | 7 | 175 | 1,571 | 1,532 |
| 248 | Cellulose | 3 | 173 | 613 | 439 |
| 249 | Granular materials | 13 | 171 | 142 | 366 |
| 250 | data protection | 2 | 168 | 786 | 230 |
| 251 | international trade | 1 | 166 | 1,284 | 410 |
| 252 | Developed countries | 2 | 162 | 264 | 168 |
| 253 | Natural history | 3 | 156 | 2,902 | 3,169 |
| 254 | Visual Communication | 6 | 155 | 228 | 184 |
| 254 | Image enhancement | 6 | 155 | 172 | 173 |
| 254 | Communication | 6 | 155 | 1,431 | 1,415 |
| 257 | Parallel Processing | 6 | 152 | 298 | 380 |
| 258 | Genomics | 3 | 149 | 2,521 | 2,081 |
| 259 | Power Electronics | 12 | 148 | 536 | 885 |
| 260 | Statistics | 18 | 147 | 1,125 | 1,432 |
| 260 | Bioenergetics | 6 | 147 | 550 | 704 |
| 260 | Chromosome mapping | 2 | 147 | 1,832 | 1,376 |
| 260 | gene mapping | 2 | 147 | 1,963 | 1,531 |
| 264 | Information Systems | 6 | 146 | 959 | 1,009 |
| 265 | Rock Mechanics | 11 | 145 | 434 | 707 |
| 266 | Investment analysis | 11 | 144 | 337 | 623 |
| 267 | biological evolution | 5 | 142 | 1,482 | 1,736 |
| 268 | Statistical Mechanics | 7 | 140 | 419 | 392 |
| 269 | Nervous system | 9 | 139 | 1,278 | 1,719 |
| 269 | Nonlinear mechanics | 5 | 139 | 313 | 279 |
| 271 | Cytology | 7 | 138 | 2,264 | 2,751 |
| 272 | Fluid Dynamics | 12 | 135 | 511 | 798 |
| 273 | Ophthalmology | 1 | 134 | 1,938 | 1,167 |
| 274 | Nuclear Engineering | 20 | 133 | 514 | 837 |
| 274 | Marine Geology | 7 | 133 | 361 | 443 |
| 274 | Marine Geophysics | 7 | 133 | 102 | 125 |
| 274 | Marine mineral resources | 7 | 133 | 55 | 54 |
| 274 | Seabed | 7 | 133 | 55 | 54 |
| 279 | Geophysics | 11 | 129 | 1,797 | 2,389 |
| 279 | Lightweight concrete | 3 | 129 | 411 | 589 |
| 279 | Alloys | 28 | 129 | 21 | 84 |
| 282 | Cognitive Science | 4 | 128 | 1,358 | 1,363 |
| 282 | Chemical kinetics | 13 | 128 | 235 | 304 |
| 282 | Pesticides | 6 | 128 | 391 | 414 |
| 285 | Physiology | 1 | 125 | 4,299 | 2,867 |
| 286 | Computer Science | 11 | 124 | 1,013 | 1,309 |
| 287 | Photochemistry | 5 | 123 | 1,306 | 1,380 |
| 287 | Photobiology | 5 | 123 | 1,043 | 1,121 |
| 289 | Evolution | 2 | 122 | 1,956 | 1,478 |
| 290 | Combinatorial chemistry | 2 | 121 | 831 | 729 |
| 291 | Industrial Design | 2 | 119 | 391 | 230 |
| 291 | Robotics | 14 | 119 | 759 | 1,289 |
| 291 | Optical Communications | 7 | 119 | 474 | 511 |
| 294 | Adaptive control systems | 14 | 116 | 162 | 368 |
| 295 | environmental indicators | 4 | 114 | 1,001 | 1,244 |
| 295 | Raman spectroscopy | 6 | 114 | 516 | 649 |
| 297 | Quantum Optics | 5 | 112 | 691 | 620 |
| 297 | Atomic spectroscopy | 5 | 112 | 870 | 838 |
| 297 | Laser Spectroscopy | 5 | 112 | 637 | 584 |
| 300 | Quantum electronics | 9 | 111 | 919 | 1,113 |
| 300 | Simulation Methods | 6 | 111 | 650 | 745 |
| 300 | Mechanics | 10 | 111 | 676 | 868 |
| 303 | Graphene | 1 | 110 | 263 | 140 |
| 304 | Systems Analysis | 9 | 109 | 589 | 861 |
| 305 | Optoelectronics | 9 | 108 | 241 | 231 |
| 306 | Nanoelectronics | 3 | 106 | 767 | 462 |
| 306 | textile fibers | 4 | 106 | 346 | 231 |
| 308 | impact | 3 | 105 | 292 | 344 |
| 309 | Public Policy | 5 | 104 | 1,280 | 1,529 |
| 309 | Food additives | 1 | 104 | 1,690 | 1,187 |
| 309 | hydrocolloids | 1 | 104 | 986 | 866 |
| 312 | Psychiatry | 3 | 101 | 3,235 | 2,951 |
| 312 | Computational Chemistry | 7 | 101 | 413 | 631 |
| 314 | Chemical processes | 3 | 100 | 584 | 427 |
| 314 | Documentation | 1 | 100 | 491 | 225 |
| 314 | genome | 6 | 100 | 937 | 1,481 |
| 317 | Computer Engineering | 8 | 99 | 472 | 723 |
| 318 | Radiation | 5 | 97 | 1,655 | 1,587 |
| 318 | probabilities | 20 | 97 | 517 | 804 |
| 320 | Operations Research | 15 | 96 | 1,042 | 1,787 |
| 321 | Social Sciences | 10 | 95 | 1,915 | 2,418 |
| 321 | Adsorption | 3 | 95 | 199 | 167 |
| 321 | Mineral resources | 2 | 95 | 845 | 738 |
| 324 | Molecular evolution | 4 | 94 | 1,208 | 1,537 |
| 325 | Superconductors | 2 | 93 | 995 | 610 |
| 325 | Crystal growth | 4 | 93 | 931 | 1,003 |
| 327 | Histology | 5 | 92 | 1,296 | 1,580 |
| 328 | Porous materials | 7 | 91 | 423 | 582 |
| 329 | Environmental Law | 2 | 90 | 1,243 | 1,422 |
| 330 | Environmental Geology | 6 | 88 | 1,166 | 1,590 |
| 330 | Business Ethics | 2 | 88 | 1,189 | 1,309 |
| 332 | Medical Laboratory Science | 3 | 87 | 1,801 | 1,978 |
| 332 | Database Management | 3 | 87 | 750 | 700 |
| 332 | ecosystem | 1 | 87 | 1,866 | 1,419 |
| 332 | Semiconductor industry | 2 | 87 | 690 | 413 |
| 336 | Psychopharmacology | 1 | 86 | 1,776 | 1,345 |
| 336 | Psychophysiology | 1 | 86 | 3,075 | 2,309 |
| 338 | Microscopy | 10 | 83 | 678 | 1,078 |
| 339 | Psychology | 11 | 82 | 2,497 | 3,576 |
| 340 | Humanities | 9 | 81 | 968 | 1,251 |
| 340 | Soil dynamics | 6 | 81 | 321 | 521 |
| 340 | electric vehicles | 6 | 81 | 187 | 347 |
| 340 | Hydrocarbons | 4 | 81 | 97 | 76 |
| 344 | Bibliometrics | 1 | 80 | 297 | 184 |
| 344 | sustainability | 4 | 80 | 736 | 1,102 |
| 344 | Elderly | 6 | 80 | 804 | 675 |
| 344 | older people | 7 | 80 | 968 | 1,079 |
| 344 | Imaging systems | 11 | 80 | 266 | 528 |
| 349 | Crystallography | 7 | 77 | 1,137 | 957 |
| 350 | Databases | 2 | 76 | 446 | 352 |
| 350 | Human-Computer Interaction | 3 | 76 | 1,534 | 1,532 |
| 350 | Organometallic compounds | 4 | 76 | 1,204 | 1,251 |
| 350 | Hazardous waste | 5 | 76 | 707 | 1,417 |
| 354 | Biomass | 4 | 74 | 564 | 956 |
| 355 | East Asia | 6 | 73 | 365 | 438 |
| 355 | supercritical fluids | 2 | 73 | 496 | 503 |
| 357 | Food Science | 1 | 72 | 500 | 155 |
| 357 | Differential Equations | 9 | 72 | 604 | 851 |
| 357 | Transportation | 3 | 72 | 1,570 | 1,557 |
| 360 | Agricultural Engineering | 2 | 71 | 536 | 505 |
| 360 | radioactive waste | 4 | 71 | 683 | 1,383 |
| 360 | industrial waste | 4 | 71 | 713 | 1,385 |
| 363 | Pharmacognosy | 2 | 70 | 2,078 | 2,078 |
| 363 | Medicinal plants | 2 | 70 | 1,614 | 1,669 |
| 363 | Flexible electronics | 2 | 70 | 92 | 172 |
| 363 | Human Resources | 1 | 70 | 842 | 751 |
| 367 | machinery | 4 | 69 | 695 | 766 |
| 368 | Liquid Crystals | 6 | 65 | 663 | 620 |
| 368 | forest policy | 1 | 65 | 630 | 397 |
| 368 | economic analysis | 3 | 65 | 224 | 300 |
| 368 | Australia | 3 | 65 | 1,783 | 1,639 |
| 372 | Genetic engineering | 3 | 64 | 1,807 | 2,058 |
| 372 | Water quality management | 7 | 64 | 1,147 | 1,810 |
| 374 | carbon monoxide | 2 | 63 | 460 | 594 |
| 375 | Technological Innovations | 4 | 62 | 919 | 1,269 |
| 376 | Nanotubes | 7 | 60 | 71 | 121 |
| 377 | Wireless Communication | 3 | 58 | 462 | 407 |
| 377 | extraterrestrial environment | 3 | 58 | 572 | 574 |
| 379 | Bifurcation Theory | 3 | 57 | 273 | 273 |
| 379 | astronomical phenomena | 2 | 57 | 649 | 539 |
| 381 | venom | 1 | 56 | 1,274 | 892 |
| 381 | Toxins | 1 | 56 | 1,406 | 989 |
| 383 | North America | 3 | 55 | 851 | 817 |
| 383 | econometric models | 4 | 55 | 535 | 838 |
| 385 | Regional Planning | 3 | 54 | 1,421 | 1,552 |
| 386 | Nondestructive testing | 4 | 53 | 577 | 741 |
| 386 | biological factors | 3 | 53 | 1,832 | 2,088 |
| 388 | Sociology | 6 | 52 | 2,101 | 2,930 |
| 388 | Creativity | 3 | 52 | 286 | 500 |
| 388 | India | 8 | 52 | 735 | 1,057 |
| 391 | Recombinant DNA | 5 | 51 | 1,106 | 1,614 |
| 392 | Materials Engineering | 3 | 50 | 775 | 761 |
| 392 | Mechatronics | 5 | 50 | 682 | 1,125 |
| 392 | Food Preservation | 2 | 50 | 1,041 | 855 |
| 395 | Algebra | 11 | 49 | 855 | 1,078 |
| 395 | Waste management | 5 | 49 | 1,088 | 1,571 |
| 395 | Water Purification | 5 | 49 | 892 | 1,287 |
| 398 | Drug delivery systems | 4 | 48 | 1,325 | 1,916 |
| 398 | Computational Complexity | 9 | 48 | 540 | 1,066 |
| 400 | Epidemiology | 4 | 46 | 2,692 | 3,436 |
| 400 | Public Health | 5 | 46 | 3,642 | 4,764 |
| 400 | Bacteriology | 1 | 46 | 2,238 | 2,190 |
| 400 | nucleic acids | 4 | 46 | 1,235 | 1,777 |
| 400 | DNS | 4 | 46 | 386 | 677 |
| 400 | DNA | 4 | 46 | 491 | 748 |
| 400 | Genes | 4 | 46 | 911 | 1,321 |
| 407 | Iron | 6 | 45 | 194 | 344 |
| 408 | Microbial Ecology | 3 | 44 | 1,891 | 2,797 |
| 408 | Mineralogy | 7 | 44 | 848 | 1,403 |
| 408 | Molecular Genetics | 3 | 44 | 1,551 | 2,221 |
| 408 | Phylogeny | 3 | 44 | 861 | 1,307 |
| 412 | plasma spraying | 4 | 43 | 183 | 310 |
| 412 | Recycling | 1 | 43 | 1,046 | 1,293 |
| 414 | Emulsions | 5 | 42 | 244 | 411 |
| 415 | Climatology | 2 | 41 | 1,916 | 2,090 |
| 415 | Biological Systems | 4 | 41 | 433 | 802 |
| 415 | water reuse | 2 | 41 | 457 | 606 |
| 418 | infrared radiation | 4 | 40 | 512 | 703 |
| 418 | Diagnostic Imaging | 9 | 40 | 959 | 1,853 |
| 420 | Marine Biology | 1 | 37 | 3,098 | 2,829 |
| 420 | Marine Pollution | 1 | 37 | 1,814 | 1,819 |
| 422 | Ecological Engineering | 1 | 36 | 1,105 | 1,234 |
| 422 | Cancer | 2 | 36 | 2,600 | 3,154 |
| 424 | Systems Biology | 3 | 35 | 1,336 | 2,001 |
| 425 | Cryptography | 3 | 34 | 686 | 645 |
| 425 | Clinical Pharmacology | 1 | 34 | 1,637 | 1,524 |
| 425 | Latin America | 5 | 34 | 920 | 1,010 |
| 428 | Operator theory | 2 | 33 | 595 | 399 |
| 428 | Plant tissue culture | 1 | 33 | 1,125 | 1,124 |
| 428 | clay minerals | 2 | 33 | 354 | 500 |
| 428 | innovation | 1 | 33 | 1,026 | 1,116 |
| 428 | research and development | 1 | 33 | 603 | 615 |
| 428 | Planets | 3 | 33 | 1,278 | 1,891 |
| 428 | Plant cell culture | 1 | 33 | 1,047 | 1,112 |
| 435 | Geodesy | 6 | 32 | 474 | 1,101 |
| 435 | Europa | 2 | 32 | 626 | 759 |
| 437 | Thermodynamics | 8 | 31 | 731 | 1,351 |
| 437 | Queuing Theory | 1 | 31 | 302 | 219 |
| 437 | Thin Films | 3 | 31 | 537 | 688 |
| 437 | Friction | 1 | 31 | 259 | 310 |
| 437 | Dementia | 2 | 31 | 1,359 | 1,177 |
| 437 | Alzheimer's disease | 2 | 31 | 1,376 | 1,245 |
| 443 | Protein engineering | 1 | 30 | 371 | 394 |
| 443 | molecular design | 1 | 30 | 412 | 398 |
| 445 | Computer Vision | 7 | 29 | 728 | 1,605 |
| 445 | micromechanics | 3 | 29 | 607 | 890 |
| 445 | synthesis | 3 | 29 | 1,134 | 1,279 |
| 448 | Teaching | 1 | 28 | 2,642 | 2,176 |
| 448 | thinking | 1 | 28 | 647 | 638 |
| 448 | optical devices | 3 | 28 | 500 | 739 |
| 451 | Dermatology | 1 | 27 | 1,821 | 1,708 |
| 451 | Process Control | 1 | 27 | 1,480 | 1,695 |
| 451 | Computational Intelligence | 3 | 27 | 679 | 1,043 |
| 451 | Oncogenes | 1 | 27 | 1,168 | 1,458 |
| 451 | Production Management | 2 | 27 | 1,376 | 1,879 |
| 451 | analysis | 1 | 27 | 548 | 573 |
| 451 | Microstructure | 6 | 27 | 596 | 1,223 |
| 451 | Plant diseases | 3 | 27 | 1,813 | 2,295 |
| 451 | color | 1 | 27 | 490 | 410 |
| 451 | cell physiology | 2 | 27 | 1,428 | 1,962 |
| 461 | Coding Theory | 1 | 26 | 664 | 439 |
| 461 | Agriculture | 1 | 26 | 3,022 | 2,776 |
| 463 | Computer-Aided Design | 3 | 25 | 1,210 | 1,735 |
| 463 | Plant physiology | 2 | 25 | 2,200 | 2,791 |
| 465 | Education | 2 | 24 | 3,907 | 3,843 |
| 465 | Meteorology | 1 | 24 | 2,726 | 2,848 |
| 465 | Stochastic Processes | 3 | 24 | 960 | 1,279 |
| 465 | Boundary Value Problems | 8 | 24 | 428 | 1,057 |
| 465 | soil microbiology | 2 | 24 | 1,580 | 2,391 |
| 465 | Monomers | 3 | 24 | 63 | 151 |
| 465 | Capital market | 1 | 24 | 816 | 870 |
| 472 | Health Policy | 1 | 23 | 2,902 | 2,730 |
| 472 | Nanophotonics | 2 | 23 | 427 | 659 |
| 472 | health services accessibility | 1 | 23 | 1,468 | 1,447 |
| 472 | aromatic plants | 2 | 23 | 321 | 381 |
| 472 | Informatics | 1 | 23 | 1,314 | 1,368 |
| 472 | language | 2 | 23 | 982 | 1,212 |
| 478 | Immunology | 1 | 22 | 3,251 | 3,404 |
| 478 | Cytogenetics | 1 | 22 | 1,672 | 1,817 |
| 478 | Anti-inflammatory agents | 1 | 22 | 522 | 581 |
| 478 | Inflammation | 1 | 22 | 1,499 | 1,776 |
| 478 | Optoelectronic devices | 1 | 22 | 1,578 | 1,235 |
| 483 | Structural optimization | 2 | 21 | 431 | 683 |
| 483 | Terahertz Technology | 1 | 21 | 296 | 334 |
| 483 | isomerism | 4 | 21 | 252 | 624 |
| 483 | Chirality | 4 | 21 | 252 | 624 |
| 487 | Traffic Engineering | 1 | 20 | 740 | 862 |
| 487 | Nanomedicine | 1 | 20 | 510 | 718 |
| 487 | Highway Engineering | 1 | 20 | 647 | 708 |
| 487 | Cell Biology | 2 | 20 | 3,191 | 4,127 |
| 491 | Pharmacy | 2 | 19 | 2,100 | 2,781 |
| 491 | Environmental Microbiology | 2 | 19 | 1,542 | 2,370 |
| 491 | Biodegradation | 2 | 19 | 958 | 1,592 |
| 491 | hazard mitigation | 1 | 19 | 1,646 | 1,830 |
| 491 | city planning | 3 | 19 | 1,552 | 2,367 |
| 491 | Decision making | 2 | 19 | 1,729 | 2,300 |
| 491 | drugs | 2 | 19 | 2,059 | 2,741 |
| 491 | natural disasters | 1 | 19 | 2,009 | 2,238 |
| 499 | Data Mining | 3 | 18 | 1,078 | 1,814 |
| 499 | Health Services Research | 2 | 18 | 1,756 | 2,351 |
| 499 | Organizational Behavior | 1 | 18 | 874 | 1,041 |
| 499 | Herbal medicine | 1 | 18 | 1,254 | 1,617 |
| 499 | Quantum Gravity | 3 | 18 | 1,836 | 2,263 |
| 499 | Primary health care | 2 | 18 | 1,823 | 2,491 |
| 499 | Europe | 1 | 18 | 3,789 | 3,498 |
| 506 | Experimental Psychology | 2 | 17 | 711 | 918 |
| 506 | Radio waves | 2 | 17 | 968 | 1,297 |
| 506 | Longevity | 1 | 17 | 349 | 480 |
| 506 | rejuvenation | 1 | 17 | 270 | 412 |
| 506 | Textile industry | 2 | 17 | 624 | 741 |
| 511 | Geography | 2 | 16 | 2,226 | 2,906 |
| 511 | Contraception | 1 | 16 | 904 | 1,107 |
| 511 | Reproductive health | 1 | 16 | 1,221 | 1,413 |
| 511 | Powder Metallurgy | 4 | 16 | 160 | 303 |
| 511 | enzymes | 4 | 16 | 1,195 | 2,299 |
| 511 | Birth control | 1 | 16 | 779 | 986 |
| 517 | Geomorphology | 1 | 15 | 1,867 | 2,253 |
| 517 | Soil Science | 1 | 15 | 2,537 | 2,779 |
| 517 | Mental Disorders | 2 | 15 | 2,628 | 3,521 |
| 517 | Ergodic Theory | 1 | 15 | 32 | 23 |
| 517 | Radio wave propagation | 4 | 15 | 613 | 1,108 |
| 517 | reasoning | 2 | 15 | 572 | 813 |
| 517 | United States | 1 | 15 | 5,709 | 5,672 |
| 517 | drug evaluation | 2 | 15 | 1,406 | 2,097 |
| 517 | Eigenvalues | 7 | 15 | 121 | 178 |
| 526 | Pharmacokinetics | 1 | 14 | 1,249 | 1,613 |
| 526 | Bioremediation | 2 | 14 | 1,129 | 1,875 |
| 526 | Social policy | 1 | 14 | 1,641 | 1,748 |
| 526 | Finite Element Method | 2 | 14 | 427 | 684 |
| 526 | bioluminescence | 2 | 14 | 510 | 752 |
| 526 | Tunneling | 2 | 14 | 409 | 750 |
| 526 | underground construction | 2 | 14 | 409 | 750 |
| 526 | planning | 1 | 14 | 1,351 | 1,557 |
| 526 | Economic planning | 1 | 14 | 943 | 1,206 |
| 535 | Human Geography | 1 | 13 | 1,675 | 1,744 |
| 535 | economic indicators | 1 | 13 | 215 | 257 |
| 535 | toxicity testing | 2 | 13 | 816 | 1,446 |
| 535 | commerce | 1 | 13 | 2,404 | 2,555 |
| 535 | Mountains | 1 | 13 | 804 | 851 |
| 540 | Computational Mathematics | 1 | 12 | 215 | 283 |
| 540 | Navier-Stokes equations | 3 | 12 | 151 | 295 |
| 542 | Educational Technology | 1 | 11 | 2,599 | 3,032 |
| 542 | Nuclear Chemistry | 2 | 11 | 1,285 | 1,644 |
| 542 | Radiochemistry | 2 | 11 | 1,202 | 1,532 |
| 542 | Expert Systems | 1 | 11 | 539 | 633 |
| 542 | Molecular recognition | 1 | 11 | 457 | 650 |
| 542 | Biomechanics | 2 | 11 | 1,469 | 2,199 |
| 542 | Supramolecular chemistry | 5 | 11 | 151 | 570 |
| 542 | Harmonic Analysis | 1 | 11 | 288 | 385 |
| 542 | Trace elements | 1 | 11 | 535 | 850 |
| 542 | amino acids | 1 | 11 | 982 | 1,319 |
| 552 | Sustainable agriculture | 1 | 10 | 1,288 | 1,650 |
| 552 | Molecular ecology | 1 | 10 | 1,423 | 1,994 |
| 552 | Protective coatings | 1 | 10 | 360 | 429 |
| 552 | Flood control | 1 | 10 | 577 | 762 |
| 552 | irrigation | 1 | 10 | 607 | 760 |
| 552 | drainage | 1 | 10 | 528 | 606 |
| 552 | Electromagnetic fields | 1 | 10 | 729 | 648 |
| 559 | Urban Policy | 1 | 9 | 1,420 | 1,859 |
| 559 | Regional Economics | 1 | 9 | 819 | 1,050 |
| 559 | Radiography | 1 | 9 | 1,033 | 1,361 |
| 559 | Nuclear Fusion | 3 | 9 | 538 | 913 |
| 559 | Nanobiotechnology | 1 | 9 | 743 | 1,235 |
| 559 | Multiscale Modeling | 1 | 9 | 161 | 179 |
| 559 | Photogrammetry | 5 | 9 | 620 | 1,153 |
| 559 | Rheology | 3 | 9 | 569 | 1,169 |
| 559 | Fixed Point Theory | 1 | 9 | 590 | 520 |
| 559 | visualization | 3 | 9 | 1,383 | 1,770 |
| 559 | radar | 1 | 9 | 347 | 446 |
| 559 | Sonar | 1 | 9 | 290 | 399 |
| 559 | biological monitoring | 1 | 9 | 896 | 1,322 |
| 559 | Navigation | 1 | 9 | 544 | 552 |
| 573 | Nursing | 1 | 8 | 2,670 | 2,943 |
| 573 | Planetary Science | 1 | 8 | 785 | 978 |
| 573 | Computer Architecture | 1 | 8 | 912 | 1,023 |
| 573 | Mass Spectrometry | 2 | 8 | 1,240 | 1,887 |
| 573 | Evidence-Based Medicine | 1 | 8 | 1,234 | 1,600 |
| 573 | Microprocessors | 1 | 8 | 1,022 | 1,298 |
| 573 | Machining | 1 | 8 | 309 | 401 |
| 573 | Nonlinear systems | 3 | 8 | 617 | 1,247 |
| 581 | Political Science | 1 | 7 | 2,320 | 2,268 |
| 581 | Systems Theory | 1 | 7 | 825 | 986 |
| 581 | Food Safety | 1 | 7 | 609 | 937 |
| 581 | Flexible manufacturing systems | 1 | 7 | 788 | 1,184 |
| 581 | Information visualization | 1 | 7 | 388 | 526 |
| 581 | Biotransformation | 1 | 7 | 281 | 479 |
| 581 | Immunochemistry | 1 | 7 | 1,369 | 1,778 |
| 581 | Social Systems | 1 | 7 | 79 | 90 |
| 581 | food contamination | 1 | 7 | 1,746 | 2,241 |
| 581 | Visual Perception | 1 | 7 | 1,840 | 2,251 |
| 581 | Mobile Commerce | 1 | 7 | 52 | 83 |
| 581 | industrial relations | 1 | 7 | 1,340 | 1,650 |
| 581 | immunoassay | 1 | 7 | 437 | 643 |
| 581 | Scanning electron microscopy | 1 | 7 | 304 | 461 |
| 595 | Geographic information systems | 3 | 6 | 1,159 | 2,301 |
| 595 | emergency management | 1 | 6 | 1,199 | 1,761 |
| 595 | Organizational learning | 2 | 6 | 647 | 1,477 |
| 595 | Drug targeting | 1 | 6 | 593 | 978 |
| 595 | Risk assessment | 1 | 6 | 1,193 | 1,689 |
| 595 | Knowledge management | 2 | 6 | 595 | 1,435 |
| 595 | Water Microbiology | 1 | 6 | 891 | 1,425 |
| 595 | Cyberterrorism | 1 | 6 | 123 | 353 |
| 595 | Roads | 2 | 6 | 766 | 1,262 |
| 595 | Japan | 2 | 6 | 2,123 | 3,081 |
| 595 | place marketing | 1 | 6 | 244 | 557 |
| 595 | Refractory materials | 5 | 6 | 91 | 311 |
| 595 | Heterocyclic compounds | 1 | 6 | 1,533 | 1,834 |
| 595 | Fouling | 1 | 6 | 459 | 821 |
| 609 | Aerospace Engineering | 1 | 5 | 468 | 606 |
| 609 | air quality management | 1 | 5 | 983 | 1,570 |
| 609 | Electromagnetic compatibility | 3 | 5 | 350 | 783 |
| 609 | Structural biology | 1 | 5 | 162 | 371 |
| 609 | Antenna Arrays | 2 | 5 | 636 | 1,129 |
| 609 | Combinatorial number theory | 1 | 5 | 1 | 5 |
| 609 | Molecular cloning | 1 | 5 | 1,956 | 2,557 |
| 609 | Genetic recombination | 1 | 5 | 1,923 | 2,531 |
| 609 | Drying | 1 | 5 | 680 | 1,023 |
| 609 | Infrared spectroscopy | 2 | 5 | 430 | 1,097 |
| 609 | Proteome | 1 | 5 | 1,441 | 2,005 |
| 609 | personality | 1 | 5 | 2,043 | 2,654 |
| 609 | natural products | 1 | 5 | 2,553 | 3,074 |
| 609 | energy development | 1 | 5 | 1,537 | 2,217 |
| 609 | biological agents | 1 | 5 | 1,215 | 1,344 |
| 609 | fusion reactors | 2 | 5 | 488 | 768 |
| 609 | mathematical concepts | 1 | 5 | 737 | 988 |
| 609 | Conflict of Laws | 1 | 5 | 133 | 151 |
| 609 | proteins | 1 | 5 | 2,502 | 3,151 |
| 628 | Philosophy | 2 | 4 | 1,685 | 1,840 |
| 628 | Cloud Computing | 1 | 4 | 650 | 1,113 |
| 628 | Polymer Engineering | 1 | 4 | 292 | 552 |
| 628 | Telecommunications | 1 | 4 | 1,433 | 1,852 |
| 628 | Digital electronics | 1 | 4 | 605 | 757 |
| 628 | Multiphase Flow | 1 | 4 | 633 | 948 |
| 628 | Superconductivity | 1 | 4 | 710 | 936 |
| 628 | foreign exchange | 1 | 4 | 600 | 898 |
| 628 | Asia | 3 | 4 | 2,816 | 4,751 |
| 628 | Ventilation | 2 | 4 | 667 | 1,377 |
| 628 | Safety management | 1 | 4 | 1,185 | 1,758 |
| 628 | Combinatorial analysis | 2 | 4 | 1,209 | 1,588 |
| 628 | Ore deposits | 1 | 4 | 759 | 1,042 |
| 628 | Biodiversity | 3 | 4 | 2,114 | 3,796 |
| 642 | Geology | 1 | 3 | 3,356 | 4,094 |
| 642 | Surveying | 2 | 3 | 175 | 420 |
| 642 | Geriatric Nursing | 1 | 3 | 956 | 1,388 |
| 642 | Cartography | 2 | 3 | 591 | 1,124 |
| 642 | Social Psychology | 1 | 3 | 2,992 | 3,801 |
| 642 | Public Administration | 1 | 3 | 2,033 | 2,558 |
| 642 | Transnational corporations | 1 | 3 | 815 | 1,333 |
| 642 | Calculus of Variations | 2 | 3 | 677 | 1,034 |
| 642 | Food inspection | 1 | 3 | 91 | 221 |
| 642 | Microfluidics | 1 | 3 | 424 | 713 |
| 642 | air quality | 1 | 3 | 565 | 1,090 |
| 642 | human behavior | 1 | 3 | 3,228 | 4,337 |
| 642 | Financial Institutions | 1 | 3 | 742 | 1,133 |
| 642 | Host-parasite interactions | 1 | 3 | 1,588 | 2,325 |
| 642 | Petroleum | 1 | 3 | 464 | 726 |
| 642 | food quality | 1 | 3 | 91 | 221 |
| 642 | recreation | 1 | 3 | 1,067 | 1,497 |
| 642 | Behavior | 1 | 3 | 3,770 | 4,869 |
| 642 | Soil ecology | 1 | 3 | 1,223 | 1,792 |
| 661 | Geometry | 1 | 2 | 1,682 | 1,938 |
| 661 | Graph Theory | 1 | 2 | 1,204 | 1,457 |
| 661 | Institutional Economics | 1 | 2 | 157 | 312 |
| 661 | Indoor air quality | 1 | 2 | 205 | 407 |
| 661 | Air Conditioning | 1 | 2 | 390 | 653 |
| 661 | Semigroups | 2 | 2 | 408 | 724 |
| 661 | Eastern Europe | 1 | 2 | 1,502 | 1,947 |
| 661 | Stem cells | 1 | 2 | 1,579 | 2,221 |
| 661 | Solutions | 1 | 2 | 712 | 1,088 |
| 661 | Middle East | 1 | 2 | 1,662 | 2,166 |
| 661 | Capitalism | 1 | 2 | 392 | 685 |
| 661 | North Africa | 1 | 2 | 380 | 560 |
| 661 | heating | 1 | 2 | 305 | 547 |
| 674 | Game Theory | 1 | 1 | 902 | 1,295 |
| 674 | Theology | 1 | 1 | 1,039 | 1,046 |
| 674 | Applied Linguistics | 1 | 1 | 1,029 | 1,451 |
| 674 | Criminal psychology | 1 | 1 | 1,117 | 1,588 |
| 674 | Forensic Psychology | 1 | 1 | 656 | 1,007 |
| 674 | Kinetics | 1 | 1 | 917 | 1,462 |
| 674 | Atmospheric Physics | 1 | 1 | 1,996 | 2,787 |
| 674 | Intellectual Property | 5 | 1 | 108 | 645 |
| 674 | Microfabrication | 2 | 1 | 451 | 1,067 |
| 674 | microwave antennas | 1 | 1 | 668 | 1,014 |
| 674 | Thermochemistry | 1 | 1 | 772 | 1,182 |
| 674 | Learning disabilities | 1 | 1 | 1,257 | 1,885 |
| 674 | Water quality | 1 | 1 | 544 | 1,113 |
| 674 | Nanomanufacturing | 2 | 1 | 160 | 397 |
| 674 | Child Development | 2 | 1 | 1,885 | 3,270 |
| 674 | Global warming | 2 | 1 | 200 | 624 |
| 674 | Ubiquitous computing | 1 | 1 | 619 | 999 |
| 674 | Urban Areas | 1 | 1 | 471 | 883 |
| 674 | Calvinism | 1 | 1 | 125 | 124 |
| 674 | scientific societies | 1 | 1 | 1,160 | 1,898 |
| 674 | Water chemistry | 1 | 1 | 783 | 1,424 |
| 674 | Microwaves | 1 | 1 | 1,754 | 2,237 |
| 674 | Intellectual disability | 1 | 1 | 1,202 | 1,845 |
| 674 | Radiation effects | 1 | 1 | 1,076 | 1,692 |
| 674 | applications | 1 | 1 | 135 | 285 |
| 699 | Photography | 1 | 0 | 1,556 | 1,955 |
| 699 | Number Theory | 1 | 0 | 1,277 | 1,780 |
| 699 | genre | 1 | 0 | 458 | 1,011 |
| 699 | Child | 1 | 0 | 2,875 | 3,953 |
| 699 | occupational diseases | 1 | 0 | 1,200 | 2,004 |
| 699 | Heritage Tourism | 1 | 0 | 289 | 719 |
| 699 | philology | 2 | 0 | 655 | 928 |
| 699 | acupuncture | 1 | 0 | 414 | 682 |
| 699 | cultural tourism | 1 | 0 | 288 | 719 |
| 699 | Developmental Disabilities | 1 | 0 | 1,383 | 2,170 |
| 699 | Massage therapy | 1 | 0 | 77 | 126 |
| 699 | Africa | 1 | 0 | 2,389 | 3,352 |
| 699 | Evolution equations | 1 | 0 | 355 | 635 |
| 699 | smart structures | 1 | 0 | 25 | 97 |
| 699 | Cerebral cortex | 1 | 0 | 1,172 | 1,737 |