| 1 | Chemistry | 553 | 30.6K | 706 | 588 |
| 2 | Physics | 848 | 15.0K | 481 | 996 |
| 3 | Optics | 689 | 13.1K | 123 | 155 |
| 4 | Nanotechnology | 251 | 12.0K | 434 | 445 |
| 5 | Analytical Chemistry | 323 | 10.3K | 212 | 264 |
| 6 | Molecular Biology | 283 | 9.7K | 750 | 859 |
| 7 | Biochemistry | 216 | 8.0K | 1,140 | 1,067 |
| 8 | Botany | 142 | 8.0K | 510 | 420 |
| 9 | Automation | 122 | 7.3K | 203 | 181 |
| 10 | Materials | 167 | 7.0K | 864 | 778 |
| 11 | nanoscience | 105 | 6.0K | 334 | 315 |
| 12 | Biology | 106 | 6.0K | 1,417 | 1,445 |
| 13 | Artificial Intelligence | 181 | 5.7K | 208 | 289 |
| 14 | Pollution | 145 | 5.6K | 603 | 768 |
| 15 | Catalysis | 105 | 5.6K | 679 | 574 |
| 16 | Photonics | 123 | 5.6K | 169 | 187 |
| 17 | Mathematics | 443 | 5.3K | 400 | 468 |
| 18 | Biotechnology | 116 | 4.9K | 805 | 863 |
| 19 | Biomedical Engineering | 201 | 4.7K | 380 | 536 |
| 20 | Nanostructured Materials | 102 | 4.7K | 462 | 388 |
| 21 | Plants | 75 | 4.7K | 252 | 250 |
| 22 | Biophysics | 132 | 4.7K | 837 | 808 |
| 23 | Plant physiology | 86 | 4.3K | 254 | 268 |
| 24 | Nuclear Physics | 224 | 4.3K | 671 | 791 |
| 25 | Systems Engineering | 116 | 4.2K | 102 | 84 |
| 26 | Biocompatible Materials | 74 | 4.2K | 729 | 679 |
| 27 | Genomics | 68 | 4.1K | 475 | 311 |
| 28 | lasers | 204 | 4.0K | 85 | 106 |
| 29 | Chemical Engineering | 116 | 4.0K | 748 | 807 |
| 30 | Statistical physics | 81 | 4.0K | 723 | 502 |
| 31 | Optical materials | 124 | 4.0K | 232 | 340 |
| 32 | environmental pollution | 106 | 3.9K | 549 | 638 |
| 33 | Science | 172 | 3.8K | 1,149 | 1,858 |
| 34 | Neural circuitry | 119 | 3.8K | 83 | 110 |
| 35 | Information Science | 111 | 3.6K | 143 | 187 |
| 36 | Materials Science | 83 | 3.6K | 853 | 778 |
| 37 | Colloids | 111 | 3.6K | 559 | 631 |
| 38 | Ecology | 115 | 3.6K | 936 | 1,194 |
| 39 | Medicine | 147 | 3.5K | 1,337 | 1,590 |
| 40 | Cybernetics | 50 | 3.5K | 235 | 169 |
| 41 | Signal Processing | 140 | 3.5K | 248 | 355 |
| 42 | Surface Chemistry | 98 | 3.4K | 618 | 613 |
| 43 | Environment | 76 | 3.3K | 863 | 1,093 |
| 44 | actuators | 92 | 3.3K | 169 | 200 |
| 44 | transducers | 92 | 3.3K | 169 | 200 |
| 46 | Environmental Management | 88 | 3.2K | 263 | 381 |
| 47 | plant molecular biology | 57 | 3.1K | 234 | 314 |
| 48 | Optical Communications | 38 | 3.1K | 94 | 20 |
| 49 | Biochemical Engineering | 80 | 3.1K | 513 | 740 |
| 50 | Image Processing | 115 | 3.0K | 179 | 291 |
| 51 | Environmental Health | 95 | 2.9K | 782 | 951 |
| 52 | Research | 153 | 2.9K | 1,111 | 1,407 |
| 53 | Bioengineering | 79 | 2.8K | 684 | 849 |
| 54 | Control Theory | 152 | 2.7K | 85 | 164 |
| 55 | Green Chemistry | 25 | 2.3K | 557 | 329 |
| 56 | Nanophotonics | 32 | 2.3K | 19 | 6 |
| 57 | Nanoparticles | 40 | 2.3K | 328 | 231 |
| 58 | Plant cells | 27 | 2.2K | 340 | 391 |
| 59 | Sustainable Engineering | 20 | 2.0K | 536 | 255 |
| 59 | System analysis | 73 | 2.0K | 258 | 272 |
| 61 | Environmental monitoring | 69 | 1.9K | 572 | 870 |
| 62 | Multimedia Systems | 98 | 1.9K | 85 | 126 |
| 63 | Spectrum analysis | 108 | 1.8K | 698 | 1,049 |
| 64 | Cell Biology | 73 | 1.8K | 704 | 1,127 |
| 65 | Biosensors | 41 | 1.7K | 179 | 273 |
| 66 | Signal Transduction | 25 | 1.6K | 359 | 323 |
| 67 | health planning | 88 | 1.6K | 128 | 201 |
| 68 | Microbiology | 50 | 1.6K | 1,533 | 1,680 |
| 69 | Environmental Policy | 45 | 1.6K | 671 | 821 |
| 70 | Environmental Engineering | 34 | 1.6K | 990 | 894 |
| 71 | environmental protection | 54 | 1.5K | 594 | 809 |
| 72 | Cytology | 51 | 1.5K | 955 | 1,188 |
| 73 | China | 109 | 1.5K | 233 | 350 |
| 74 | Numerical Analysis | 108 | 1.5K | 144 | 279 |
| 75 | Bioelectronics | 34 | 1.5K | 171 | 258 |
| 76 | Diagnostic Imaging | 32 | 1.5K | 421 | 347 |
| 77 | Molecular Spectroscopy | 84 | 1.4K | 104 | 178 |
| 78 | Energy Policy | 27 | 1.4K | 810 | 748 |
| 79 | Electrochemistry | 39 | 1.4K | 1,271 | 950 |
| 80 | United States | 44 | 1.4K | 1,192 | 1,016 |
| 81 | Wireless Communication Systems | 37 | 1.4K | 617 | 464 |
| 82 | Nervous system | 45 | 1.4K | 525 | 623 |
| 83 | Toxicology | 50 | 1.4K | 1,068 | 1,217 |
| 84 | environmental indicators | 41 | 1.3K | 82 | 131 |
| 85 | Genetics | 40 | 1.3K | 861 | 1,018 |
| 86 | Evolutionary Computation | 14 | 1.3K | 111 | 113 |
| 87 | Plant genetic engineering | 18 | 1.3K | 267 | 183 |
| 88 | Psychology | 121 | 1.3K | 649 | 1,072 |
| 89 | Agricultural Chemistry | 31 | 1.3K | 549 | 506 |
| 90 | Nonlinear functional analysis | 52 | 1.2K | 78 | 74 |
| 91 | Biomass Energy | 21 | 1.2K | 848 | 805 |
| 92 | Computational Complexity | 28 | 1.1K | 123 | 21 |
| 93 | Plant Genetics | 19 | 1.1K | 189 | 204 |
| 94 | optical devices | 42 | 1.1K | 9 | 12 |
| 95 | Plant Biotechnology | 14 | 1.1K | 235 | 111 |
| 95 | mathematical analysis | 85 | 1.1K | 355 | 390 |
| 97 | Adolescent | 40 | 1.1K | 408 | 420 |
| 98 | multimedia | 31 | 1.1K | 82 | 99 |
| 98 | Interactive multimedia | 31 | 1.1K | 85 | 100 |
| 100 | Environmental Toxicology | 36 | 1.0K | 497 | 698 |
| 101 | management | 27 | 992 | 1,154 | 1,176 |
| 102 | Chemical analysis | 32 | 985 | 153 | 167 |
| 103 | fuel cells | 6 | 970 | 894 | 452 |
| 104 | Magnetic Materials | 33 | 958 | 349 | 351 |
| 105 | Bioinformatics | 34 | 952 | 474 | 595 |
| 106 | Computational Biology | 31 | 949 | 617 | 715 |
| 107 | Telecommunication Systems | 44 | 945 | 200 | 196 |
| 108 | energy resources | 11 | 943 | 649 | 534 |
| 109 | sanitation | 19 | 937 | 546 | 686 |
| 110 | Fuzzy systems | 49 | 932 | 136 | 130 |
| 111 | Nanostructures | 61 | 931 | 179 | 589 |
| 112 | adolescence | 34 | 918 | 184 | 256 |
| 112 | Behavior | 24 | 918 | 1,039 | 1,137 |
| 114 | Luminescence | 48 | 912 | 126 | 124 |
| 115 | Child psychology | 18 | 905 | 534 | 514 |
| 116 | Polymers | 47 | 903 | 1,297 | 1,447 |
| 117 | Computer Vision | 18 | 900 | 364 | 347 |
| 118 | Solid State Physics | 62 | 895 | 1,001 | 1,194 |
| 119 | miniaturization | 33 | 886 | 447 | 699 |
| 120 | Mathematical Physics | 37 | 882 | 876 | 759 |
| 121 | Child Development | 20 | 877 | 661 | 593 |
| 122 | Environmental pollutants | 29 | 866 | 534 | 633 |
| 123 | Water | 25 | 845 | 798 | 999 |
| 124 | soil microbiology | 15 | 838 | 592 | 605 |
| 125 | Water pollution | 27 | 837 | 875 | 999 |
| 126 | computer networks | 44 | 822 | 502 | 724 |
| 127 | Soil Science | 31 | 817 | 445 | 580 |
| 128 | Microelectronics | 22 | 811 | 615 | 670 |
| 129 | human behavior | 16 | 790 | 959 | 1,016 |
| 130 | Solitons | 49 | 787 | 68 | 183 |
| 130 | Fractals | 49 | 787 | 68 | 183 |
| 130 | Chaos | 49 | 787 | 68 | 183 |
| 133 | Virology | 38 | 783 | 697 | 1,173 |
| 134 | Information Technology | 37 | 780 | 430 | 694 |
| 135 | environmental exposure | 26 | 776 | 457 | 542 |
| 136 | pollutants | 25 | 774 | 468 | 579 |
| 137 | genome | 4 | 769 | 1,147 | 623 |
| 138 | Environmental Geology | 26 | 761 | 362 | 414 |
| 139 | Telecommunication | 19 | 750 | 1,044 | 823 |
| 139 | child abuse | 10 | 750 | 391 | 255 |
| 141 | Plant Ecology | 16 | 739 | 726 | 693 |
| 142 | Adaptive control systems | 36 | 737 | 47 | 41 |
| 143 | Condensed Matter | 49 | 704 | 934 | 1,168 |
| 144 | Pharmacology | 29 | 694 | 1,618 | 1,771 |
| 145 | Genetic algorithms | 6 | 684 | 186 | 152 |
| 146 | Remote Sensing | 10 | 681 | 767 | 250 |
| 147 | Youth | 25 | 666 | 138 | 222 |
| 148 | Pharmaceutical Chemistry | 22 | 665 | 1,348 | 1,340 |
| 149 | Technology | 44 | 659 | 887 | 1,208 |
| 150 | Geophysics | 27 | 651 | 1,202 | 1,312 |
| 151 | Neurology | 36 | 650 | 1,366 | 1,776 |
| 152 | Physiology | 40 | 647 | 1,066 | 1,521 |
| 153 | Electronics | 23 | 641 | 1,274 | 1,082 |
| 154 | Molecules | 80 | 640 | 181 | 463 |
| 155 | Plant diseases | 24 | 630 | 641 | 621 |
| 155 | Growth | 9 | 630 | 578 | 552 |
| 157 | Systems Analysis | 24 | 626 | 233 | 190 |
| 158 | Chromosome mapping | 21 | 612 | 552 | 666 |
| 158 | gene mapping | 21 | 612 | 613 | 752 |
| 160 | Recycling | 6 | 604 | 358 | 286 |
| 161 | Swarm Intelligence | 8 | 602 | 96 | 70 |
| 162 | Molecular structure | 62 | 584 | 299 | 778 |
| 162 | Nonlinear systems | 26 | 584 | 94 | 116 |
| 164 | Educational Psychology | 26 | 581 | 433 | 536 |
| 165 | Meteorology | 27 | 575 | 657 | 947 |
| 166 | Geomorphology | 21 | 549 | 464 | 618 |
| 166 | Hydrology | 25 | 549 | 755 | 921 |
| 168 | Internet of Things | 26 | 535 | 261 | 443 |
| 169 | Social Sciences | 28 | 533 | 1,003 | 960 |
| 170 | Medical Laboratory Science | 11 | 522 | 962 | 914 |
| 171 | Solid State Chemistry | 28 | 520 | 892 | 919 |
| 172 | Immunology | 10 | 518 | 1,519 | 1,321 |
| 173 | Information Retrieval | 17 | 514 | 95 | 151 |
| 174 | Geography | 19 | 506 | 758 | 787 |
| 175 | Physical Chemistry | 26 | 500 | 738 | 947 |
| 176 | polymerization | 27 | 496 | 1,446 | 1,573 |
| 177 | Neurophysiology | 26 | 492 | 936 | 1,228 |
| 177 | internet | 26 | 492 | 371 | 603 |
| 179 | Social Change | 5 | 491 | 791 | 550 |
| 180 | energy conservation | 9 | 486 | 1,181 | 1,066 |
| 181 | Plant tissue culture | 10 | 469 | 295 | 185 |
| 181 | Plant cell culture | 10 | 469 | 243 | 184 |
| 183 | Economics | 23 | 466 | 1,613 | 1,496 |
| 184 | Atmospheric Physics | 15 | 458 | 640 | 727 |
| 185 | Psychophysiology | 43 | 457 | 715 | 1,290 |
| 186 | Engineering | 29 | 449 | 1,374 | 1,557 |
| 187 | natural disasters | 20 | 447 | 309 | 487 |
| 188 | city planning | 6 | 438 | 1,101 | 603 |
| 189 | Humanities | 21 | 437 | 424 | 290 |
| 190 | Radiography | 7 | 436 | 417 | 432 |
| 191 | Genetic engineering | 9 | 434 | 1,103 | 954 |
| 192 | Urban Policy | 5 | 429 | 626 | 284 |
| 193 | Crystal growth | 13 | 428 | 434 | 382 |
| 194 | animal diseases | 20 | 424 | 114 | 128 |
| 195 | Measurement | 12 | 423 | 599 | 433 |
| 196 | Computer Science | 44 | 416 | 261 | 542 |
| 197 | Computer Graphics | 36 | 412 | 376 | 665 |
| 197 | Information Systems | 5 | 412 | 1,067 | 473 |
| 197 | soil conservation | 8 | 412 | 382 | 264 |
| 200 | plant communities | 5 | 410 | 793 | 639 |
| 201 | Robotics | 25 | 409 | 499 | 718 |
| 202 | Carbon | 8 | 400 | 777 | 815 |
| 203 | Medical Physics | 41 | 398 | 375 | 708 |
| 204 | Developmental Biology | 12 | 394 | 860 | 1,032 |
| 205 | pigments | 15 | 392 | 263 | 289 |
| 206 | Psychiatry | 33 | 383 | 1,159 | 1,779 |
| 207 | Organic Chemistry | 27 | 379 | 1,156 | 1,474 |
| 208 | Number Theory | 32 | 373 | 131 | 80 |
| 209 | Communication | 28 | 370 | 572 | 936 |
| 210 | Pharmacognosy | 9 | 364 | 1,057 | 1,014 |
| 210 | Algorithms | 27 | 364 | 71 | 170 |
| 210 | Renewable Energy Sources | 5 | 364 | 2,139 | 1,909 |
| 210 | viruses | 12 | 364 | 589 | 753 |
| 210 | Agriculture | 14 | 364 | 860 | 930 |
| 215 | Educational Technology | 10 | 363 | 818 | 669 |
| 216 | Surface-Active Agents | 8 | 362 | 609 | 547 |
| 216 | Surface properties | 8 | 362 | 659 | 604 |
| 218 | Horticulture | 4 | 360 | 650 | 205 |
| 219 | Earth Sciences | 21 | 354 | 1,266 | 1,530 |
| 220 | Plant breeding | 6 | 352 | 500 | 282 |
| 221 | software | 8 | 349 | 570 | 518 |
| 222 | Statistics | 28 | 348 | 901 | 988 |
| 223 | Human-Computer Interaction | 13 | 345 | 606 | 687 |
| 223 | cell physiology | 25 | 345 | 422 | 858 |
| 225 | Mycology | 9 | 339 | 863 | 790 |
| 226 | Breeding | 12 | 337 | 541 | 553 |
| 227 | atmosphere | 16 | 336 | 223 | 321 |
| 228 | Nanochemistry | 15 | 334 | 378 | 426 |
| 229 | Food | 16 | 331 | 1,353 | 1,742 |
| 230 | Plant hormones | 9 | 327 | 111 | 107 |
| 231 | Physical organic chemistry | 12 | 325 | 724 | 648 |
| 232 | finance | 14 | 324 | 1,115 | 1,102 |
| 233 | International Finance | 10 | 323 | 940 | 826 |
| 234 | Analytical Biochemistry | 13 | 319 | 750 | 774 |
| 235 | Reproduction | 16 | 315 | 910 | 1,022 |
| 236 | Mobile Computing | 12 | 314 | 466 | 478 |
| 237 | Bioremediation | 10 | 310 | 282 | 351 |
| 238 | Fungi | 7 | 309 | 638 | 631 |
| 238 | Informatics | 8 | 309 | 473 | 404 |
| 240 | Sustainable Development | 21 | 306 | 530 | 1,136 |
| 241 | biological evolution | 9 | 305 | 1,093 | 1,274 |
| 242 | Visual Communication | 23 | 304 | 39 | 90 |
| 242 | Nanobiotechnology | 4 | 304 | 341 | 288 |
| 242 | Image enhancement | 23 | 304 | 36 | 86 |
| 245 | Quantum Gravity | 108 | 303 | 483 | 1,188 |
| 246 | Quantum electronics | 26 | 300 | 462 | 668 |
| 246 | Marine resources | 9 | 300 | 314 | 281 |
| 248 | Investment analysis | 8 | 296 | 486 | 359 |
| 249 | Semiconductors | 27 | 295 | 594 | 876 |
| 250 | Bioorganic chemistry | 16 | 294 | 1,237 | 1,554 |
| 251 | hazard mitigation | 17 | 292 | 201 | 400 |
| 252 | Neurochemistry | 17 | 290 | 950 | 1,258 |
| 252 | soil pollution | 4 | 290 | 447 | 164 |
| 254 | Atmospheric Chemistry | 4 | 289 | 726 | 638 |
| 254 | Biodegradation | 8 | 289 | 341 | 361 |
| 254 | personality | 22 | 289 | 520 | 937 |
| 257 | Bioinorganic chemistry | 11 | 286 | 755 | 749 |
| 258 | Ecological Engineering | 4 | 284 | 535 | 381 |
| 258 | Organometallic chemistry | 16 | 284 | 906 | 928 |
| 260 | Climatology | 14 | 283 | 745 | 1,013 |
| 261 | natural products | 6 | 277 | 1,305 | 841 |
| 262 | Sustainable agriculture | 10 | 272 | 275 | 334 |
| 263 | Clinical Chemistry | 11 | 271 | 1,268 | 1,451 |
| 264 | Industrial Microbiology | 8 | 264 | 1,146 | 1,266 |
| 265 | infrared radiation | 31 | 263 | 59 | 137 |
| 266 | Parallel Processing | 6 | 261 | 298 | 283 |
| 267 | Molecular Genetics | 9 | 258 | 981 | 1,177 |
| 268 | coal | 6 | 256 | 1,145 | 1,139 |
| 269 | Developing countries | 7 | 255 | 1,472 | 1,189 |
| 270 | Biological Systems | 7 | 253 | 262 | 241 |
| 271 | Radio | 7 | 247 | 906 | 860 |
| 272 | Power Electronics | 2 | 242 | 1,144 | 717 |
| 273 | Phylogenetics | 3 | 239 | 89 | 14 |
| 274 | Molecular evolution | 5 | 229 | 1,073 | 1,008 |
| 275 | Transgenic plants | 2 | 228 | 509 | 249 |
| 276 | food technology | 9 | 223 | 1,489 | 1,718 |
| 277 | Cell death | 9 | 220 | 612 | 891 |
| 278 | Phylogeny | 7 | 219 | 541 | 662 |
| 279 | Functional Analysis | 17 | 218 | 570 | 679 |
| 279 | Medical Microbiology | 2 | 218 | 2,064 | 1,474 |
| 279 | Operations Research | 18 | 218 | 932 | 1,335 |
| 279 | Pesticides | 10 | 218 | 244 | 268 |
| 283 | Biodiversity | 7 | 215 | 1,437 | 1,344 |
| 284 | Fiber Optics | 23 | 212 | 261 | 496 |
| 285 | Land use | 7 | 209 | 696 | 764 |
| 285 | Mineral resources | 8 | 209 | 259 | 426 |
| 287 | econometric models | 5 | 208 | 447 | 353 |
| 288 | ports | 4 | 207 | 176 | 110 |
| 288 | Aging | 8 | 207 | 1,484 | 1,422 |
| 290 | Developmental Psychology | 15 | 205 | 398 | 689 |
| 291 | Soft Condensed Matter | 8 | 202 | 621 | 674 |
| 291 | biopolymers | 8 | 202 | 679 | 742 |
| 293 | Nutrition | 12 | 198 | 1,979 | 2,546 |
| 294 | bioluminescence | 14 | 197 | 63 | 71 |
| 295 | Brain | 18 | 192 | 1,041 | 1,642 |
| 295 | Detectors | 18 | 192 | 508 | 920 |
| 297 | Technology Assessment | 2 | 191 | 565 | 342 |
| 298 | Molecular cloning | 6 | 183 | 968 | 898 |
| 298 | Teaching | 11 | 183 | 877 | 989 |
| 300 | cell interaction | 6 | 182 | 660 | 811 |
| 301 | Human genetics | 1 | 181 | 2,000 | 1,771 |
| 302 | Paleoclimatology | 8 | 174 | 670 | 834 |
| 303 | Mechanical Engineering | 8 | 173 | 1,568 | 1,268 |
| 303 | Astrophysics | 9 | 173 | 1,877 | 1,959 |
| 305 | Cerebral cortex | 8 | 171 | 528 | 712 |
| 306 | Sociology | 19 | 170 | 1,101 | 1,815 |
| 307 | Recombinant DNA | 7 | 169 | 938 | 987 |
| 308 | Chromatographic analysis | 14 | 168 | 795 | 1,056 |
| 309 | Radiation effects | 9 | 165 | 266 | 507 |
| 310 | Substance Abuse | 4 | 164 | 1,126 | 868 |
| 311 | Proteomics | 4 | 163 | 857 | 827 |
| 312 | Intelligent Transportation Systems | 4 | 160 | 951 | 901 |
| 312 | Entomology | 5 | 160 | 1,767 | 1,248 |
| 314 | Primary health care | 1 | 159 | 2,365 | 1,059 |
| 314 | Genetic recombination | 5 | 159 | 1,037 | 951 |
| 314 | Family | 6 | 159 | 660 | 592 |
| 317 | Education | 8 | 158 | 2,246 | 2,022 |
| 318 | Neuropsychology | 12 | 157 | 1,082 | 1,496 |
| 318 | Emulsions | 28 | 157 | 32 | 112 |
| 320 | Nonlinear mechanics | 8 | 156 | 203 | 251 |
| 321 | biofuels | 3 | 155 | 252 | 351 |
| 321 | Child welfare | 7 | 155 | 661 | 659 |
| 321 | Microorganisms | 4 | 155 | 861 | 944 |
| 321 | Social work | 7 | 155 | 862 | 757 |
| 325 | Boundary Value Problems | 21 | 154 | 179 | 455 |
| 325 | individual differences | 7 | 154 | 147 | 263 |
| 327 | Project Management | 2 | 153 | 348 | 350 |
| 327 | Geochemistry | 6 | 153 | 1,351 | 1,431 |
| 329 | Public Health | 10 | 152 | 2,716 | 3,297 |
| 329 | Quality of life | 7 | 152 | 877 | 1,149 |
| 331 | Industrial Engineering | 8 | 151 | 1,094 | 1,354 |
| 331 | economic policy | 10 | 151 | 1,319 | 1,269 |
| 333 | Differential Equations | 11 | 150 | 527 | 618 |
| 333 | Asia | 13 | 150 | 1,225 | 1,546 |
| 335 | Immunotherapy | 7 | 149 | 1,037 | 1,334 |
| 335 | Chromatography | 11 | 149 | 773 | 1,044 |
| 335 | proteins | 6 | 149 | 1,315 | 1,353 |
| 338 | Marine Biology | 6 | 147 | 1,746 | 1,832 |
| 338 | Environmental Microbiology | 2 | 147 | 1,542 | 1,284 |
| 338 | Gerontology | 6 | 147 | 1,245 | 1,089 |
| 341 | Industrial Safety | 5 | 146 | 903 | 802 |
| 341 | Electrophoresis | 9 | 146 | 904 | 1,154 |
| 343 | Alternative Medicine | 5 | 145 | 1,097 | 1,141 |
| 343 | complementary therapies | 5 | 145 | 1,267 | 1,200 |
| 345 | Astronomy | 15 | 144 | 1,305 | 1,903 |
| 346 | Food Microbiology | 4 | 143 | 1,016 | 1,198 |
| 347 | Economic History | 14 | 142 | 1,544 | 1,873 |
| 347 | Adolescent Psychology | 7 | 142 | 498 | 614 |
| 349 | Social Psychology | 19 | 141 | 808 | 1,642 |
| 349 | Soil biology | 2 | 141 | 990 | 909 |
| 351 | Embryology | 7 | 139 | 873 | 1,161 |
| 352 | Immunopharmacology | 6 | 138 | 687 | 802 |
| 352 | cytokines | 6 | 138 | 758 | 1,009 |
| 354 | Bacteriology | 4 | 135 | 1,434 | 1,524 |
| 355 | Immune system | 3 | 134 | 803 | 884 |
| 355 | Immunity | 3 | 134 | 1,429 | 1,531 |
| 357 | Geodesy | 5 | 133 | 546 | 516 |
| 358 | soil management | 4 | 132 | 457 | 558 |
| 358 | Entropy | 16 | 132 | 313 | 668 |
| 360 | Geriatrics | 7 | 130 | 1,702 | 1,825 |
| 361 | Glass | 4 | 127 | 904 | 827 |
| 362 | Crystallography | 49 | 126 | 278 | 745 |
| 362 | tillage | 2 | 126 | 492 | 490 |
| 364 | Bibliometrics | 6 | 125 | 60 | 134 |
| 365 | Evolutionary Genetics | 4 | 124 | 546 | 514 |
| 365 | Molecular Epidemiology | 4 | 124 | 546 | 514 |
| 367 | Geology | 7 | 123 | 1,887 | 1,991 |
| 367 | land degradation | 5 | 123 | 329 | 454 |
| 367 | cryosphere | 4 | 123 | 304 | 339 |
| 367 | degradation | 5 | 123 | 329 | 454 |
| 371 | Microstructure | 20 | 122 | 163 | 481 |
| 372 | Rural Development | 2 | 120 | 648 | 449 |
| 373 | Simulation Methods | 4 | 119 | 873 | 706 |
| 374 | Urban Planning | 3 | 118 | 378 | 371 |
| 374 | community development | 3 | 118 | 591 | 441 |
| 374 | Transnational corporations | 4 | 118 | 284 | 323 |
| 374 | Housing | 3 | 118 | 480 | 449 |
| 374 | Population | 3 | 118 | 846 | 746 |
| 379 | Ceramics | 3 | 115 | 1,470 | 1,023 |
| 379 | pottery | 3 | 115 | 992 | 852 |
| 381 | electric vehicles | 1 | 113 | 522 | 277 |
| 382 | Creativity | 7 | 111 | 105 | 271 |
| 383 | Landscape Architecture | 2 | 110 | 219 | 38 |
| 383 | Solar Energy | 6 | 110 | 1,252 | 1,750 |
| 383 | Mental Disorders | 11 | 110 | 1,322 | 2,120 |
| 386 | School Psychology | 4 | 108 | 388 | 428 |
| 386 | Intelligent Control Systems | 12 | 108 | 423 | 565 |
| 388 | thinking | 6 | 107 | 144 | 288 |
| 389 | Pathology | 5 | 106 | 1,287 | 1,513 |
| 390 | Experimental Psychology | 5 | 105 | 448 | 518 |
| 390 | Radiation | 8 | 105 | 1,333 | 1,528 |
| 392 | Child | 2 | 104 | 2,321 | 1,693 |
| 392 | Drug design | 5 | 104 | 1,118 | 1,333 |
| 392 | Antigens | 3 | 104 | 661 | 578 |
| 395 | Physical Geography | 13 | 101 | 135 | 418 |
| 395 | Antibodies | 2 | 101 | 615 | 457 |
| 397 | Environmental Law | 2 | 100 | 1,243 | 1,370 |
| 398 | Transportation | 3 | 99 | 1,570 | 1,387 |
| 398 | reasoning | 6 | 99 | 213 | 311 |
| 400 | economic analysis | 5 | 98 | 140 | 221 |
| 400 | Australia | 6 | 98 | 1,251 | 1,347 |
| 402 | Energy Conversion | 2 | 97 | 1,362 | 1,382 |
| 402 | Cognitive Therapy | 4 | 97 | 510 | 537 |
| 402 | Electrochemical Analysis | 7 | 97 | 1,086 | 1,406 |
| 405 | peptides | 4 | 96 | 665 | 590 |
| 406 | Marine Pollution | 4 | 94 | 1,032 | 1,298 |
| 406 | food contamination | 8 | 94 | 519 | 826 |
| 408 | Phytochemistry | 4 | 93 | 193 | 278 |
| 408 | Coastal zone management | 5 | 93 | 485 | 652 |
| 408 | Combinatorial optimization | 14 | 93 | 102 | 228 |
| 408 | Phytoremediation | 4 | 93 | 193 | 278 |
| 408 | environmental remediation | 4 | 93 | 256 | 311 |
| 408 | Bioreactors | 4 | 93 | 193 | 278 |
| 414 | Early Childhood Education | 5 | 92 | 460 | 464 |
| 415 | Ore deposits | 1 | 91 | 759 | 513 |
| 416 | Medical Oncology | 6 | 89 | 984 | 1,353 |
| 417 | Psychopharmacology | 7 | 88 | 868 | 1,339 |
| 418 | radiative transfer | 7 | 87 | 381 | 472 |
| 418 | Quantum Optics | 15 | 87 | 331 | 703 |
| 418 | Atomic spectroscopy | 15 | 87 | 456 | 927 |
| 418 | Laser Spectroscopy | 15 | 87 | 284 | 662 |
| 418 | Cancer | 5 | 87 | 1,905 | 2,496 |
| 423 | Data Mining | 5 | 86 | 768 | 985 |
| 423 | Environmental Chemistry | 5 | 86 | 1,622 | 2,232 |
| 425 | Cognition | 16 | 85 | 738 | 1,493 |
| 426 | Organometallic compounds | 4 | 84 | 1,204 | 1,205 |
| 427 | Anxiety Disorders | 1 | 83 | 764 | 670 |
| 427 | Anxiety | 1 | 83 | 767 | 667 |
| 427 | Optoelectronic devices | 8 | 83 | 534 | 629 |
| 427 | family studies | 1 | 83 | 82 | 66 |
| 427 | Parenting | 1 | 83 | 117 | 81 |
| 427 | Child rearing | 1 | 83 | 117 | 81 |
| 427 | Social behavior | 11 | 83 | 572 | 1,126 |
| 434 | Microbial Biotechnology | 2 | 82 | 1,298 | 1,091 |
| 434 | Technological Innovations | 2 | 82 | 1,334 | 1,096 |
| 436 | Computational Chemistry | 3 | 81 | 688 | 701 |
| 436 | Logistics | 1 | 81 | 1,010 | 711 |
| 436 | Engineering Geology | 2 | 81 | 1,547 | 1,357 |
| 436 | machinery | 4 | 81 | 695 | 714 |
| 440 | Landscape Ecology | 2 | 80 | 565 | 585 |
| 440 | Plant Morphology | 3 | 80 | 607 | 547 |
| 440 | Smoking | 2 | 80 | 828 | 799 |
| 440 | Obesity | 2 | 80 | 1,867 | 1,831 |
| 440 | toxicity testing | 3 | 80 | 614 | 675 |
| 440 | drug addiction | 2 | 80 | 1,130 | 1,050 |
| 440 | alcoholism | 2 | 80 | 1,461 | 1,263 |
| 440 | Mental illness | 6 | 80 | 1,168 | 1,764 |
| 440 | Women's health | 2 | 80 | 1,519 | 1,104 |
| 440 | Genes | 5 | 80 | 804 | 1,061 |
| 450 | Public Policy | 4 | 79 | 1,460 | 1,740 |
| 450 | Neuropharmacology | 6 | 79 | 382 | 624 |
| 450 | Imaging systems | 8 | 79 | 393 | 529 |
| 453 | Fracture mechanics | 4 | 77 | 1,177 | 1,281 |
| 453 | clay | 1 | 77 | 1,303 | 1,065 |
| 455 | Quality Control | 4 | 76 | 1,507 | 1,800 |
| 456 | Pharmacy | 2 | 75 | 2,100 | 1,922 |
| 456 | Metallography | 3 | 75 | 800 | 843 |
| 458 | emergency management | 1 | 74 | 1,199 | 768 |
| 458 | scientific societies | 4 | 74 | 555 | 711 |
| 460 | food handling | 4 | 73 | 776 | 1,200 |
| 460 | violence | 8 | 73 | 555 | 999 |
| 462 | Health | 3 | 72 | 1,938 | 1,874 |
| 463 | Sports Medicine | 5 | 71 | 1,808 | 1,911 |
| 464 | Cytogenetics | 4 | 70 | 1,022 | 1,378 |
| 464 | Medicinal plants | 2 | 70 | 1,614 | 1,669 |
| 464 | Computational Intelligence | 5 | 70 | 460 | 631 |
| 464 | phenomics | 3 | 70 | 26 | 32 |
| 468 | Supramolecular chemistry | 3 | 69 | 237 | 174 |
| 469 | Veterinary Immunology | 2 | 68 | 398 | 345 |
| 469 | Oxidative stress | 2 | 68 | 989 | 1,310 |
| 469 | Ubiquitous computing | 2 | 68 | 402 | 133 |
| 469 | free radicals | 2 | 68 | 1,366 | 1,572 |
| 469 | Oxidation-reduction | 2 | 68 | 862 | 1,095 |
| 474 | Evolution | 2 | 67 | 1,956 | 1,853 |
| 475 | Photochemistry | 8 | 66 | 1,029 | 1,765 |
| 475 | Evidence-Based Medicine | 4 | 66 | 542 | 820 |
| 477 | Environmental Geochemistry | 3 | 65 | 570 | 679 |
| 477 | rehabilitation | 4 | 65 | 1,716 | 2,035 |
| 477 | Minerals | 3 | 65 | 807 | 933 |
| 477 | Stress | 2 | 65 | 378 | 381 |
| 477 | Cell communication | 2 | 65 | 705 | 848 |
| 482 | Oncology | 3 | 64 | 1,731 | 2,247 |
| 482 | Hormones | 4 | 64 | 957 | 1,258 |
| 484 | Operator theory | 1 | 63 | 823 | 241 |
| 484 | Emerging infectious diseases | 3 | 63 | 301 | 445 |
| 484 | Cognitive neuroscience | 7 | 63 | 616 | 1,118 |
| 484 | dietary supplements | 7 | 63 | 446 | 1,110 |
| 484 | Photobiology | 7 | 63 | 852 | 1,530 |
| 489 | Structural dynamics | 2 | 62 | 1,089 | 1,221 |
| 489 | Paleoecology | 5 | 62 | 809 | 1,152 |
| 489 | Forest Ecology | 3 | 62 | 966 | 1,213 |
| 489 | Paleogeography | 5 | 62 | 730 | 1,068 |
| 489 | Neurons | 2 | 62 | 601 | 1,002 |
| 489 | weather | 1 | 62 | 1,015 | 739 |
| 495 | air quality management | 3 | 61 | 512 | 688 |
| 495 | Crowdsourcing | 4 | 61 | 8 | 12 |
| 495 | Nonlinear Dynamics | 7 | 61 | 1,318 | 1,786 |
| 495 | Collective behavior | 4 | 61 | 33 | 107 |
| 495 | Decision making | 9 | 61 | 766 | 1,543 |
| 500 | sustainability | 3 | 60 | 876 | 1,225 |
| 500 | Longevity | 1 | 60 | 349 | 230 |
| 500 | rejuvenation | 1 | 60 | 270 | 199 |
| 503 | Energy Storage | 2 | 59 | 1,473 | 1,449 |
| 503 | Medical genetics | 2 | 59 | 2,016 | 2,247 |
| 503 | Calculus of Variations | 4 | 59 | 479 | 475 |
| 503 | Raman spectroscopy | 2 | 59 | 993 | 929 |
| 503 | Cell differentiation | 5 | 59 | 1,013 | 1,670 |
| 503 | Proteome | 2 | 59 | 1,174 | 1,317 |
| 503 | Japan | 3 | 59 | 1,786 | 1,646 |
| 510 | Social Issues | 1 | 57 | 467 | 355 |
| 510 | embryonic development | 3 | 57 | 390 | 511 |
| 510 | Social problems | 1 | 57 | 1,000 | 769 |
| 513 | Geographic information systems | 5 | 55 | 857 | 1,137 |
| 513 | solar power | 4 | 55 | 678 | 1,205 |
| 513 | Energy Harvesting | 1 | 55 | 672 | 791 |
| 513 | DNS | 5 | 55 | 329 | 621 |
| 513 | solar cells | 4 | 55 | 739 | 1,264 |
| 513 | school psychologists | 2 | 55 | 239 | 311 |
| 513 | DNA | 5 | 55 | 425 | 677 |
| 520 | Microbial Ecology | 3 | 54 | 1,891 | 2,683 |
| 520 | Optoelectronics | 24 | 54 | 76 | 399 |
| 520 | Happiness | 5 | 54 | 276 | 696 |
| 520 | Planets | 7 | 54 | 939 | 1,691 |
| 520 | Agricultural systems | 3 | 54 | 296 | 541 |
| 525 | Information Theory | 2 | 53 | 1,544 | 1,401 |
| 525 | Electrical Engineering | 9 | 53 | 1,920 | 2,439 |
| 525 | Endocrinology | 2 | 53 | 2,485 | 2,638 |
| 525 | Database Management | 4 | 53 | 650 | 855 |
| 525 | Bryology | 5 | 53 | 125 | 174 |
| 525 | Clinical Biochemistry | 1 | 53 | 1,537 | 1,180 |
| 525 | Metabolic diseases | 1 | 53 | 2,322 | 2,144 |
| 525 | Interfaces | 4 | 53 | 239 | 362 |
| 533 | Epidemiology | 5 | 52 | 2,466 | 3,324 |
| 533 | Stem cells | 2 | 52 | 1,318 | 1,477 |
| 535 | Discourse Analysis | 4 | 51 | 308 | 478 |
| 535 | Natural resources | 4 | 51 | 632 | 987 |
| 535 | Heat Exchangers | 4 | 51 | 1,100 | 1,650 |
| 535 | Environmental risk assessment | 3 | 51 | 379 | 492 |
| 535 | Perception | 8 | 51 | 954 | 1,624 |
| 540 | Computer Engineering | 4 | 50 | 830 | 1,108 |
| 540 | RNA | 2 | 50 | 576 | 705 |
| 542 | Neuropsychiatry | 2 | 49 | 884 | 939 |
| 542 | Cryptography | 5 | 49 | 478 | 530 |
| 542 | Electromagnetism | 3 | 49 | 1,010 | 1,080 |
| 542 | Diabetes mellitus | 1 | 49 | 2,217 | 2,003 |
| 542 | Molecular recognition | 3 | 49 | 178 | 270 |
| 542 | Food additives | 4 | 49 | 919 | 1,606 |
| 542 | extraterrestrial environment | 1 | 49 | 952 | 638 |
| 542 | astronomical phenomena | 1 | 49 | 877 | 589 |
| 542 | Diabetes | 1 | 49 | 2,253 | 2,025 |
| 551 | Combinatorial chemistry | 3 | 48 | 671 | 1,074 |
| 551 | Plasma chemistry | 4 | 48 | 314 | 496 |
| 551 | Plasma polymerization | 4 | 48 | 195 | 343 |
| 551 | Chemical industry | 3 | 48 | 1,279 | 1,368 |
| 551 | Microscopy | 14 | 48 | 526 | 1,390 |
| 551 | sex crimes | 5 | 48 | 465 | 806 |
| 557 | Dynamics | 8 | 47 | 1,025 | 1,567 |
| 557 | Ecosystem management | 4 | 47 | 573 | 876 |
| 557 | Synthetic biology | 2 | 47 | 377 | 471 |
| 557 | Transport | 2 | 47 | 699 | 835 |
| 557 | Sea | 2 | 47 | 626 | 696 |
| 557 | Fishery resources | 2 | 47 | 698 | 764 |
| 557 | United Kingdom | 2 | 47 | 1,546 | 1,582 |
| 557 | Fisheries | 2 | 47 | 1,748 | 1,634 |
| 565 | Animal welfare | 1 | 46 | 523 | 405 |
| 565 | biomedicine | 1 | 46 | 893 | 836 |
| 567 | moral development | 1 | 45 | 253 | 185 |
| 567 | Moral Education | 1 | 45 | 288 | 165 |
| 567 | Solutions | 3 | 45 | 402 | 432 |
| 567 | data protection | 5 | 45 | 385 | 678 |
| 567 | Metals | 5 | 45 | 1,570 | 2,117 |
| 567 | Egypt | 1 | 45 | 1,131 | 864 |
| 573 | Food Policy | 1 | 44 | 562 | 557 |
| 573 | Animal breeding | 2 | 44 | 878 | 892 |
| 573 | agricultural policy | 1 | 44 | 429 | 472 |
| 573 | world | 1 | 44 | 1,141 | 1,183 |
| 577 | Histology | 8 | 43 | 1,056 | 2,052 |
| 577 | Behavioral research | 7 | 43 | 280 | 712 |
| 577 | Autoantibodies | 1 | 43 | 745 | 767 |
| 577 | Autoimmunity | 1 | 43 | 909 | 952 |
| 577 | Autoimmune diseases | 1 | 43 | 825 | 845 |
| 582 | Animal Biotechnology | 3 | 42 | 157 | 264 |
| 582 | Actuarial Science | 2 | 42 | 324 | 324 |
| 582 | Radiation Oncology | 2 | 42 | 394 | 455 |
| 582 | Computer-Aided Design | 5 | 42 | 923 | 1,459 |
| 582 | psychophysics | 6 | 42 | 241 | 413 |
| 582 | nucleic acids | 6 | 42 | 1,064 | 1,818 |
| 582 | insurance | 2 | 42 | 475 | 463 |
| 582 | Attention | 6 | 42 | 989 | 1,678 |
| 590 | Systems Biology | 4 | 41 | 1,199 | 1,892 |
| 590 | Regional Planning | 3 | 41 | 1,421 | 1,704 |
| 590 | Population Genetics | 2 | 41 | 1,276 | 1,621 |
| 590 | Business Ethics | 1 | 41 | 1,546 | 1,590 |
| 590 | Hypertension in pregnancy | 1 | 41 | 320 | 205 |
| 590 | Molecular ecology | 2 | 41 | 1,129 | 1,632 |
| 590 | Plastics | 3 | 41 | 1,641 | 1,890 |
| 597 | Fluid Mechanics | 5 | 40 | 1,168 | 1,623 |
| 597 | global environmental change | 4 | 40 | 675 | 1,325 |
| 597 | Fluorescence | 4 | 40 | 371 | 564 |
| 600 | Neurotoxicology | 1 | 39 | 965 | 1,001 |
| 600 | Apoptosis | 1 | 39 | 528 | 538 |
| 600 | neurotoxins | 1 | 39 | 528 | 538 |
| 600 | Neurotoxic agents | 1 | 39 | 528 | 538 |
| 600 | visualization | 3 | 39 | 1,383 | 1,068 |
| 600 | Nerve regeneration | 1 | 39 | 528 | 538 |
| 606 | Oceanography | 4 | 38 | 1,359 | 1,900 |
| 607 | Health Policy | 2 | 37 | 2,302 | 2,370 |
| 607 | Animal health | 1 | 37 | 804 | 520 |
| 607 | Social perception | 3 | 37 | 135 | 253 |
| 607 | Social policy | 1 | 37 | 1,641 | 1,237 |
| 607 | supercritical fluids | 4 | 37 | 329 | 693 |
| 607 | Microwaves | 7 | 37 | 887 | 1,309 |
| 607 | planning | 1 | 37 | 1,351 | 1,050 |
| 607 | Economic planning | 1 | 37 | 943 | 848 |
| 615 | Molecular Microbiology | 3 | 36 | 776 | 1,255 |
| 615 | Database Security | 1 | 36 | 200 | 115 |
| 615 | Infrared spectroscopy | 1 | 36 | 690 | 562 |
| 615 | atmospheric models | 2 | 36 | 698 | 911 |
| 615 | Virulence | 3 | 36 | 941 | 1,587 |
| 615 | food industry | 3 | 36 | 788 | 1,114 |
| 615 | antibiotics | 3 | 36 | 203 | 407 |
| 615 | Bacterial diseases | 3 | 36 | 259 | 515 |
| 623 | Animal genetics | 1 | 35 | 864 | 819 |
| 623 | particles | 2 | 35 | 1,289 | 1,437 |
| 625 | Evolutionary Psychology | 2 | 34 | 204 | 281 |
| 625 | Composite Materials | 3 | 34 | 2,404 | 3,076 |
| 625 | Parasitology | 1 | 34 | 2,839 | 2,511 |
| 625 | Parasitic Diseases | 1 | 34 | 2,433 | 2,270 |
| 625 | Calorimetry | 2 | 34 | 1,518 | 1,555 |
| 625 | wind erosion | 2 | 34 | 137 | 259 |
| 625 | Parasites | 1 | 34 | 2,153 | 1,910 |
| 625 | Thermal analysis | 2 | 34 | 1,518 | 1,555 |
| 633 | Waste management | 2 | 33 | 1,699 | 1,863 |
| 633 | Family Therapy | 3 | 33 | 709 | 905 |
| 633 | child mental health | 3 | 33 | 463 | 693 |
| 633 | Cellulose | 1 | 33 | 1,099 | 1,145 |
| 637 | Graph Theory | 4 | 32 | 654 | 694 |
| 637 | bryophytes | 1 | 32 | 192 | 124 |
| 637 | synthesis | 7 | 32 | 694 | 1,240 |
| 640 | Zoology | 4 | 30 | 2,127 | 2,619 |
| 640 | Ophthalmology | 3 | 30 | 1,429 | 1,885 |
| 640 | Geriatric Psychiatry | 2 | 30 | 1,055 | 1,324 |
| 640 | Sensor Networks | 3 | 30 | 264 | 370 |
| 640 | Eastern Europe | 5 | 30 | 611 | 945 |
| 640 | water supply | 1 | 30 | 1,312 | 1,374 |
| 646 | Game Theory | 1 | 29 | 902 | 698 |
| 646 | Pharmaceutical Technology | 2 | 29 | 1,667 | 2,040 |
| 646 | Expert Systems | 2 | 29 | 305 | 364 |
| 646 | Risk assessment | 2 | 29 | 825 | 996 |
| 646 | ecological risk assessment | 2 | 29 | 345 | 517 |
| 646 | Genetic variation | 1 | 29 | 257 | 251 |
| 646 | Vocational guidance | 1 | 29 | 1,413 | 1,328 |
| 646 | Cerebrospinal fluid | 1 | 29 | 235 | 262 |
| 646 | Health Risk Assessment | 2 | 29 | 607 | 786 |
| 655 | Mechatronics | 3 | 28 | 897 | 1,359 |
| 655 | Animal Behavior | 2 | 28 | 1,939 | 2,440 |
| 655 | Mental Health | 3 | 28 | 1,510 | 2,021 |
| 655 | Brain-Computer Interfaces | 1 | 28 | 108 | 79 |
| 655 | Cognitive Science | 8 | 28 | 925 | 2,293 |
| 655 | Hematopoietic stem cell transplantation | 1 | 28 | 646 | 754 |
| 655 | Immunochemistry | 3 | 28 | 919 | 1,288 |
| 655 | Ethology | 2 | 28 | 1,528 | 2,080 |
| 655 | Traditional medicine | 1 | 28 | 387 | 496 |
| 655 | carcinogens | 2 | 28 | 1,050 | 1,441 |
| 655 | Africa | 1 | 28 | 2,389 | 1,684 |
| 655 | Sedimentary rocks | 1 | 28 | 938 | 934 |
| 655 | Phytotherapy | 1 | 28 | 1,232 | 1,257 |
| 655 | brain mapping | 3 | 28 | 568 | 988 |
| 655 | Heterocyclic compounds | 3 | 28 | 1,011 | 1,190 |
| 670 | Cognitive Radio Networks | 2 | 27 | 271 | 390 |
| 670 | Ultrasonics | 2 | 27 | 1,427 | 1,973 |
| 670 | Ferroelectricity | 2 | 27 | 1,184 | 1,106 |
| 670 | Sound | 2 | 27 | 1,243 | 1,234 |
| 670 | Learning | 3 | 27 | 1,173 | 1,725 |
| 670 | North America | 1 | 27 | 1,361 | 1,128 |
| 670 | biological monitoring | 3 | 27 | 489 | 988 |
| 670 | Ultrasound | 2 | 27 | 832 | 1,092 |
| 670 | Radio frequency | 2 | 27 | 524 | 722 |
| 679 | Metabolism | 1 | 26 | 2,581 | 2,827 |
| 679 | Marine Biotechnology | 1 | 26 | 425 | 537 |
| 679 | Financial Engineering | 1 | 26 | 383 | 440 |
| 679 | Nuclear Chemistry | 1 | 26 | 1,617 | 1,245 |
| 679 | Radiochemistry | 1 | 26 | 1,539 | 1,147 |
| 679 | Diet | 1 | 26 | 2,516 | 2,832 |
| 679 | Combinatorial analysis | 4 | 26 | 911 | 1,002 |
| 686 | Nanoelectronics | 1 | 25 | 1,189 | 987 |
| 686 | commerce | 4 | 25 | 1,376 | 2,201 |
| 686 | Administration | 1 | 25 | 175 | 155 |
| 686 | Soviet Union | 2 | 25 | 898 | 741 |
| 686 | Semiconductor industry | 1 | 25 | 929 | 816 |
| 686 | Aggression | 3 | 25 | 487 | 907 |
| 686 | Catalysts | 1 | 25 | 1,137 | 1,091 |
| 693 | Software Engineering | 2 | 24 | 1,173 | 1,354 |
| 693 | Insects | 1 | 24 | 2,054 | 1,792 |
| 693 | cloning | 1 | 24 | 819 | 1,014 |
| 696 | Pharmacokinetics | 1 | 23 | 1,249 | 1,447 |
| 696 | Functional equations | 2 | 23 | 297 | 249 |
| 696 | Medical Anthropology | 2 | 23 | 1,357 | 2,007 |
| 696 | drugs | 1 | 23 | 2,514 | 2,623 |
| 700 | Corporate Social Responsibility | 1 | 22 | 645 | 997 |
| 700 | environmental auditing | 1 | 22 | 668 | 1,011 |
| 700 | Drug delivery systems | 2 | 22 | 1,762 | 2,299 |
| 700 | Randomized Controlled Trials | 2 | 22 | 1,090 | 1,302 |
| 700 | Sports | 2 | 22 | 2,257 | 2,351 |
| 700 | Radio waves | 3 | 22 | 820 | 1,231 |
| 700 | Adipose tissue | 2 | 22 | 81 | 202 |
| 700 | Sun | 1 | 22 | 496 | 487 |
| 700 | Natural history | 8 | 22 | 1,886 | 4,109 |
| 700 | Consciousness | 5 | 22 | 361 | 764 |
| 700 | environmental issues | 2 | 22 | 550 | 944 |
| 700 | Solar System | 1 | 22 | 995 | 1,017 |
| 712 | Medical Technology | 2 | 21 | 1,796 | 2,371 |
| 712 | Environmental Psychology | 2 | 21 | 463 | 889 |
| 712 | Total Quality Management | 1 | 21 | 1,109 | 1,190 |
| 712 | Carcinogenesis | 1 | 21 | 1,282 | 1,487 |
| 712 | Water quality | 2 | 21 | 316 | 601 |
| 712 | elder abuse | 1 | 21 | 554 | 648 |
| 712 | mosses | 4 | 21 | 90 | 188 |
| 712 | mutagens | 1 | 21 | 1,002 | 1,218 |
| 712 | liverworts | 4 | 21 | 90 | 188 |
| 712 | Water chemistry | 2 | 21 | 486 | 776 |
| 712 | family violence | 1 | 21 | 742 | 869 |
| 712 | energy development | 1 | 21 | 1,537 | 1,695 |
| 712 | educational innovations | 1 | 21 | 965 | 984 |
| 725 | Cloud Computing | 2 | 20 | 444 | 797 |
| 725 | Discrete Mathematics | 3 | 20 | 368 | 360 |
| 725 | Radiobiology | 2 | 20 | 1,203 | 1,575 |
| 725 | mass transfer | 1 | 20 | 2,251 | 2,366 |
| 725 | graph | 3 | 20 | 368 | 360 |
| 725 | Evolution equations | 1 | 20 | 355 | 252 |
| 725 | Aquaculture | 3 | 20 | 1,389 | 2,003 |
| 732 | Environmental Ethics | 3 | 19 | 148 | 269 |
| 732 | vibration | 2 | 19 | 1,334 | 1,730 |
| 732 | heredity | 4 | 19 | 534 | 1,038 |
| 735 | Engineering Mathematics | 3 | 18 | 1,916 | 2,374 |
| 735 | Green Technology | 1 | 18 | 893 | 1,104 |
| 735 | plasma | 1 | 18 | 204 | 203 |
| 735 | Liquid chromatography | 2 | 18 | 639 | 748 |
| 739 | Telecommunications | 4 | 17 | 673 | 1,337 |
| 739 | Computational Linguistics | 4 | 17 | 449 | 890 |
| 739 | East Asia | 4 | 17 | 516 | 1,075 |
| 739 | Vision | 1 | 17 | 942 | 1,056 |
| 739 | High performance computing | 5 | 17 | 17 | 93 |
| 744 | Anatomy | 1 | 16 | 2,468 | 2,501 |
| 744 | Hematology | 1 | 16 | 2,107 | 2,248 |
| 744 | Biogeochemistry | 2 | 16 | 1,195 | 1,886 |
| 744 | Geriatric Oncology | 1 | 16 | 815 | 1,048 |
| 744 | Chromosomes | 2 | 16 | 1,001 | 1,498 |
| 744 | Therapeutics | 1 | 16 | 1,965 | 2,312 |
| 744 | concrete | 1 | 16 | 1,338 | 1,617 |
| 751 | Educational Sociology | 2 | 15 | 480 | 738 |
| 751 | Drug targeting | 1 | 15 | 593 | 884 |
| 751 | Biodiversity conservation | 1 | 15 | 2,075 | 2,498 |
| 751 | human development | 4 | 15 | 689 | 1,508 |
| 751 | Memory | 4 | 15 | 1,234 | 2,259 |
| 751 | drug evaluation | 1 | 15 | 1,768 | 2,097 |
| 757 | Civil Engineering | 1 | 14 | 2,187 | 1,976 |
| 757 | Ethics | 1 | 14 | 1,540 | 1,581 |
| 757 | Thermodynamics | 2 | 14 | 1,509 | 1,757 |
| 757 | Econometrics | 2 | 14 | 1,582 | 1,868 |
| 757 | Thin Films | 3 | 14 | 537 | 943 |
| 757 | Ceramic materials | 2 | 14 | 1,572 | 2,146 |
| 757 | Professional ethics | 1 | 14 | 558 | 735 |
| 757 | behavior therapy | 3 | 14 | 775 | 1,312 |
| 757 | immunoassay | 1 | 14 | 437 | 461 |
| 757 | Liver diseases | 1 | 14 | 1,439 | 1,764 |
| 767 | Philosophy | 5 | 13 | 1,218 | 1,445 |
| 767 | Freshwater Ecology | 1 | 13 | 584 | 636 |
| 767 | Conservation Biology | 1 | 13 | 1,632 | 1,882 |
| 767 | Heterocyclic chemistry | 2 | 13 | 736 | 993 |
| 767 | mutation | 1 | 13 | 839 | 1,119 |
| 767 | Water quality management | 2 | 13 | 2,132 | 2,899 |
| 767 | Strategic planning | 1 | 13 | 1,270 | 1,521 |
| 767 | families | 3 | 13 | 876 | 1,431 |
| 767 | Invertebrates | 1 | 13 | 1,041 | 1,241 |
| 767 | Hazardous waste | 1 | 13 | 1,558 | 2,142 |
| 767 | rivers | 2 | 13 | 374 | 726 |
| 767 | Gastrointestinal diseases | 1 | 13 | 968 | 1,079 |
| 767 | Soil ecology | 2 | 13 | 937 | 1,582 |
| 780 | Audiology | 1 | 12 | 1,023 | 1,139 |
| 780 | Manufacturing Processes | 4 | 12 | 1,929 | 3,126 |
| 780 | Comparative Physiology | 2 | 12 | 889 | 1,407 |
| 780 | Oral Medicine | 1 | 12 | 1,150 | 1,283 |
| 780 | Social Networks | 1 | 12 | 661 | 835 |
| 780 | Organizational learning | 3 | 12 | 446 | 1,188 |
| 780 | Online social networks | 1 | 12 | 635 | 793 |
| 780 | Fractional Calculus | 2 | 12 | 210 | 432 |
| 780 | Knowledge management | 2 | 12 | 595 | 1,111 |
| 780 | Cell cycle | 2 | 12 | 365 | 715 |
| 780 | Mechanics | 2 | 12 | 1,581 | 1,958 |
| 780 | cell proliferation | 2 | 12 | 399 | 748 |
| 780 | Enzyme | 1 | 12 | 898 | 1,284 |
| 780 | Library Science | 2 | 12 | 1,186 | 1,476 |
| 780 | Structure-activity relationship | 1 | 12 | 500 | 621 |
| 780 | drug toxicity | 1 | 12 | 948 | 1,334 |
| 780 | enzymes | 1 | 12 | 1,977 | 2,417 |
| 780 | Exercise | 1 | 12 | 2,217 | 2,257 |
| 798 | Orthopedics | 3 | 11 | 1,210 | 1,946 |
| 798 | Crop Science | 1 | 11 | 241 | 312 |
| 798 | Algebra | 2 | 11 | 1,679 | 1,683 |
| 798 | Cartography | 2 | 11 | 591 | 847 |
| 798 | Statistical Mechanics | 3 | 11 | 658 | 1,020 |
| 798 | Thermochemistry | 1 | 11 | 772 | 950 |
| 798 | micromechanics | 1 | 11 | 972 | 1,177 |
| 798 | Steroids | 2 | 11 | 1,012 | 1,636 |
| 806 | Linguistics | 1 | 10 | 1,902 | 1,855 |
| 806 | Neurobiology | 1 | 10 | 1,921 | 2,417 |
| 806 | Computer Architecture | 1 | 10 | 912 | 985 |
| 806 | Production Engineering | 3 | 10 | 1,887 | 2,873 |
| 806 | Integrated Optics | 1 | 10 | 168 | 144 |
| 806 | Organic Geochemistry | 1 | 10 | 548 | 801 |
| 806 | Erosion | 1 | 10 | 243 | 479 |
| 806 | Visual Perception | 2 | 10 | 1,485 | 2,153 |
| 806 | Cosmochemistry | 1 | 10 | 1,254 | 1,671 |
| 806 | Foodborne diseases | 1 | 10 | 478 | 721 |
| 806 | Cell metabolism | 1 | 10 | 1,017 | 1,395 |
| 806 | Europe | 3 | 10 | 2,670 | 3,910 |
| 806 | Philippines | 1 | 10 | 258 | 371 |
| 819 | Nuclear Engineering | 1 | 9 | 1,955 | 2,072 |
| 819 | Food Preservation | 1 | 9 | 1,353 | 1,637 |
| 819 | Ornithology | 1 | 9 | 1,356 | 1,479 |
| 819 | Mental Health Services | 1 | 9 | 1,695 | 2,102 |
| 819 | Inflammation | 2 | 9 | 1,190 | 2,021 |
| 819 | Serbia | 1 | 9 | 301 | 254 |
| 819 | Zeolites | 1 | 9 | 1,419 | 1,899 |
| 819 | Personality Assessment | 1 | 9 | 808 | 1,136 |
| 819 | Birds | 1 | 9 | 1,546 | 1,658 |
| 828 | Sustainable Architecture | 1 | 8 | 382 | 465 |
| 828 | Economic Development | 1 | 8 | 2,280 | 2,741 |
| 828 | Psycholinguistics | 1 | 8 | 1,328 | 1,666 |
| 828 | Electron Microscopy | 1 | 8 | 653 | 827 |
| 828 | Korea | 2 | 8 | 487 | 764 |
| 828 | innovation | 1 | 8 | 1,026 | 1,470 |
| 828 | medical education | 1 | 8 | 2,382 | 2,834 |
| 828 | Futures | 1 | 8 | 554 | 720 |
| 828 | research and development | 1 | 8 | 603 | 865 |
| 828 | Middle East | 2 | 8 | 1,296 | 1,766 |
| 828 | probabilities | 4 | 8 | 1,176 | 1,773 |
| 828 | Mountains | 3 | 8 | 397 | 986 |
| 840 | Community Psychiatry | 1 | 7 | 1,398 | 1,964 |
| 840 | Digital Media | 1 | 7 | 412 | 571 |
| 840 | Integrated Circuits | 4 | 7 | 702 | 1,266 |
| 840 | Memory disorders | 3 | 7 | 277 | 667 |
| 840 | Semigroups | 1 | 7 | 560 | 533 |
| 840 | polar regions | 1 | 7 | 951 | 1,244 |
| 840 | Carbohydrates | 2 | 7 | 519 | 983 |
| 840 | pain | 1 | 7 | 1,664 | 2,091 |
| 840 | Navier-Stokes equations | 2 | 7 | 214 | 366 |
| 849 | Clinical Psychology | 1 | 6 | 1,603 | 2,088 |
| 849 | Nanomedicine | 2 | 6 | 310 | 963 |
| 849 | Clinical Laboratory Science | 1 | 6 | 418 | 614 |
| 849 | Higher Education | 1 | 6 | 1,115 | 1,454 |
| 849 | Production Planning | 1 | 6 | 556 | 950 |
| 849 | Product Design | 1 | 6 | 801 | 1,028 |
| 849 | Stochastic Processes | 2 | 6 | 1,157 | 1,822 |
| 849 | Dance | 1 | 6 | 483 | 431 |
| 849 | Biogeochemical cycles | 1 | 6 | 604 | 928 |
| 849 | Education policy | 1 | 6 | 173 | 365 |
| 849 | Animal husbandry | 1 | 6 | 510 | 755 |
| 849 | Well-being | 1 | 6 | 333 | 557 |
| 849 | Production Control | 1 | 6 | 537 | 936 |
| 849 | environmental control | 1 | 6 | 385 | 676 |
| 849 | Finite Element Method | 2 | 6 | 427 | 804 |
| 849 | infection | 1 | 6 | 1,946 | 2,606 |
| 849 | Social interaction | 1 | 6 | 616 | 927 |
| 849 | livestock | 1 | 6 | 775 | 1,022 |
| 849 | catalytic activity | 1 | 6 | 993 | 1,334 |
| 849 | recreation | 1 | 6 | 1,067 | 1,370 |
| 849 | Mollusks | 1 | 6 | 470 | 588 |
| 870 | Nursing | 1 | 5 | 2,670 | 3,141 |
| 870 | Obstetrics | 1 | 5 | 2,486 | 3,157 |
| 870 | Institutional Economics | 1 | 5 | 157 | 217 |
| 870 | Neuroimaging | 1 | 5 | 454 | 661 |
| 870 | Histochemistry | 2 | 5 | 1,145 | 1,898 |
| 870 | Marine Meteorology | 2 | 5 | 366 | 682 |
| 870 | Orthopedic Surgery | 2 | 5 | 815 | 1,373 |
| 870 | Photogrammetry | 3 | 5 | 871 | 1,361 |
| 870 | locomotion | 1 | 5 | 981 | 1,364 |
| 870 | Coding Theory | 1 | 5 | 664 | 779 |
| 870 | Radio wave propagation | 1 | 5 | 1,095 | 1,401 |
| 870 | posture | 1 | 5 | 981 | 1,364 |
| 870 | landscapes | 1 | 5 | 409 | 631 |
| 870 | movement | 1 | 5 | 651 | 964 |
| 870 | Capitalism | 1 | 5 | 392 | 573 |
| 870 | North Africa | 1 | 5 | 380 | 420 |
| 870 | mental processes | 1 | 5 | 607 | 800 |
| 870 | gait | 1 | 5 | 981 | 1,364 |
| 870 | walking | 1 | 5 | 981 | 1,364 |
| 889 | Occupational Therapy | 1 | 4 | 1,594 | 1,894 |
| 889 | Occupational Health | 1 | 4 | 1,696 | 2,186 |
| 889 | Process Control | 3 | 4 | 972 | 2,056 |
| 889 | Microbial Genetics | 1 | 4 | 626 | 981 |
| 889 | Metallurgy | 3 | 4 | 2,079 | 3,198 |
| 889 | industrial hygiene | 1 | 4 | 1,704 | 2,147 |
| 889 | Multivariate Analysis | 1 | 4 | 881 | 1,160 |
| 889 | phytopathogenic bacteria | 1 | 4 | 407 | 667 |
| 889 | Developmental Disabilities | 1 | 4 | 1,383 | 2,005 |
| 889 | Securities | 1 | 4 | 700 | 1,053 |
| 889 | Alloys | 3 | 4 | 280 | 756 |
| 889 | Capital market | 1 | 4 | 816 | 1,206 |
| 889 | Classification | 2 | 4 | 371 | 762 |
| 889 | Trace elements | 1 | 4 | 535 | 954 |
| 889 | stocks | 1 | 4 | 342 | 688 |
| 904 | Food Science | 1 | 3 | 500 | 938 |
| 904 | Surveying | 1 | 3 | 275 | 420 |
| 904 | Genetic Toxicology | 1 | 3 | 755 | 1,225 |
| 904 | Food Safety | 1 | 3 | 609 | 1,106 |
| 904 | Plant Pathology | 1 | 3 | 284 | 495 |
| 904 | Long-Term Care | 1 | 3 | 784 | 1,228 |
| 904 | Combustion | 1 | 3 | 1,720 | 2,238 |
| 904 | Long-term care facilities | 1 | 3 | 777 | 1,215 |
| 904 | Integrative Medicine | 1 | 3 | 535 | 884 |
| 904 | Immunogenetics | 1 | 3 | 834 | 1,208 |
| 904 | Water Purification | 1 | 3 | 1,795 | 2,480 |
| 904 | nuclear magnetic resonance | 1 | 3 | 1,282 | 1,644 |
| 904 | Chemical kinetics | 1 | 3 | 1,300 | 1,717 |
| 904 | Logic Programming | 1 | 3 | 532 | 659 |
| 904 | nuclear magnetic resonance spectroscopy | 1 | 3 | 1,039 | 1,399 |
| 904 | optical pattern recognition | 2 | 3 | 182 | 484 |
| 904 | Detergents | 3 | 3 | 51 | 203 |
| 904 | Light | 1 | 3 | 1,296 | 1,881 |
| 904 | freshwater biology | 1 | 3 | 1,448 | 2,023 |
| 904 | Emotions | 3 | 3 | 596 | 1,383 |
| 924 | Machine Learning | 1 | 2 | 573 | 853 |
| 924 | Organizational Behavior | 1 | 2 | 874 | 1,284 |
| 924 | symbiosis | 1 | 2 | 329 | 693 |
| 924 | Virtual reality | 1 | 2 | 760 | 1,199 |
| 924 | Religion | 1 | 2 | 1,394 | 1,508 |
| 924 | Tourism | 1 | 2 | 2,383 | 3,251 |
| 924 | Translation | 1 | 2 | 300 | 333 |
| 924 | Bifurcation Theory | 1 | 2 | 534 | 856 |
| 924 | Microprocessors | 2 | 2 | 774 | 1,506 |
| 924 | microwave communication systems | 1 | 2 | 610 | 933 |
| 924 | Noise control | 1 | 2 | 495 | 361 |
| 924 | Food Security | 1 | 2 | 320 | 674 |
| 924 | stability | 1 | 2 | 217 | 383 |
| 924 | concepts | 1 | 2 | 263 | 426 |
| 924 | indoor air pollution | 1 | 2 | 698 | 1,228 |
| 924 | Ventilation | 1 | 2 | 920 | 1,467 |
| 924 | Sick building syndrome | 1 | 2 | 698 | 1,228 |
| 924 | Microwave devices | 1 | 2 | 707 | 1,018 |
| 924 | Coronary heart disease | 1 | 2 | 411 | 632 |
| 924 | international cooperation | 1 | 2 | 1,060 | 1,553 |
| 924 | venom | 1 | 2 | 1,274 | 1,841 |
| 924 | Toxins | 1 | 2 | 1,406 | 2,010 |
| 946 | Materials Engineering | 1 | 1 | 1,320 | 1,970 |
| 946 | Applied Mathematics | 1 | 1 | 593 | 776 |
| 946 | Drama | 1 | 1 | 171 | 165 |
| 946 | Clinical Immunology | 1 | 1 | 1,235 | 1,784 |
| 946 | Theater | 1 | 1 | 412 | 358 |
| 946 | Sedimentology | 1 | 1 | 1,017 | 1,573 |
| 946 | Nonverbal Communication | 1 | 1 | 374 | 668 |
| 946 | Immunopathology | 1 | 1 | 1,372 | 1,969 |
| 946 | behavioral medicine | 1 | 1 | 1,866 | 2,857 |
| 946 | Antenna Arrays | 1 | 1 | 838 | 1,212 |
| 946 | Biomechanics | 1 | 1 | 1,875 | 2,665 |
| 946 | Body language | 1 | 1 | 245 | 511 |
| 946 | mycoses | 1 | 1 | 1,119 | 1,622 |
| 946 | Performance | 1 | 1 | 498 | 799 |
| 946 | Quantum theory | 1 | 1 | 1,444 | 1,933 |
| 961 | Law | 1 | 0 | 1,854 | 2,479 |
| 961 | Criminology | 2 | 0 | 1,076 | 1,987 |
| 961 | Photography | 1 | 0 | 1,556 | 1,955 |
| 961 | Juvenile delinquency | 1 | 0 | 519 | 847 |
| 961 | Tissue Engineering | 1 | 0 | 633 | 1,050 |
| 961 | Diagnosis | 1 | 0 | 669 | 1,209 |
| 961 | Liquid Crystals | 1 | 0 | 1,320 | 1,812 |
| 961 | Superconductors | 1 | 0 | 1,220 | 1,644 |
| 961 | Mass Media | 1 | 0 | 1,342 | 1,976 |
| 961 | Superconductivity | 1 | 0 | 710 | 1,076 |
| 961 | big data | 1 | 0 | 1,237 | 2,097 |
| 961 | Semiotics | 1 | 0 | 718 | 1,062 |
| 961 | Forest Management | 1 | 0 | 1,419 | 2,109 |
| 961 | animals | 1 | 0 | 1,816 | 2,632 |
| 961 | counseling | 1 | 0 | 1,893 | 2,786 |
| 961 | crime | 1 | 0 | 1,032 | 1,533 |
| 961 | motor skills | 1 | 0 | 417 | 796 |