| 1 | Plant physiology | 316 | 37.5K | 28 | 11 |
| 2 | plant molecular biology | 268 | 35.5K | 29 | 15 |
| 3 | Chemistry | 810 | 31.9K | 499 | 574 |
| 4 | Pollution | 583 | 26.9K | 117 | 184 |
| 5 | Science | 463 | 26.2K | 589 | 659 |
| 6 | Plant Genetics | 90 | 25.8K | 23 | 4 |
| 7 | Molecular Biology | 918 | 25.7K | 258 | 467 |
| 8 | Biochemistry | 913 | 23.3K | 437 | 566 |
| 9 | Botany | 518 | 23.2K | 121 | 155 |
| 10 | Microbiology | 566 | 21.0K | 285 | 397 |
| 11 | Ecology | 441 | 19.3K | 334 | 426 |
| 12 | environmental pollution | 356 | 18.5K | 122 | 109 |
| 13 | Biology | 298 | 18.1K | 734 | 785 |
| 14 | Biotechnology | 425 | 17.0K | 193 | 316 |
| 15 | Physics | 208 | 16.1K | 1,246 | 962 |
| 16 | Medicine | 343 | 14.2K | 757 | 722 |
| 17 | Environmental Health | 392 | 14.2K | 182 | 276 |
| 18 | Environment | 268 | 13.3K | 299 | 436 |
| 19 | Research | 336 | 13.2K | 630 | 550 |
| 20 | Environmental monitoring | 224 | 12.8K | 111 | 98 |
| 21 | Plants | 305 | 12.0K | 24 | 99 |
| 22 | Materials | 220 | 11.9K | 694 | 559 |
| 23 | Analytical Chemistry | 277 | 11.8K | 268 | 220 |
| 24 | Biophysics | 541 | 11.5K | 238 | 409 |
| 25 | Agricultural Chemistry | 365 | 11.1K | 27 | 45 |
| 26 | Chemical Engineering | 237 | 10.8K | 410 | 371 |
| 27 | Food | 306 | 10.8K | 43 | 74 |
| 28 | Catalysis | 118 | 10.3K | 622 | 359 |
| 29 | Materials Science | 125 | 10.0K | 647 | 358 |
| 30 | Genomics | 268 | 9.8K | 83 | 109 |
| 31 | Biochemical Engineering | 204 | 9.8K | 188 | 278 |
| 32 | Plant cells | 131 | 8.9K | 79 | 148 |
| 33 | Toxicology | 260 | 8.6K | 255 | 293 |
| 34 | environmental protection | 233 | 8.4K | 68 | 117 |
| 35 | Virology | 261 | 8.4K | 169 | 363 |
| 36 | Biomass Energy | 146 | 8.3K | 91 | 116 |
| 37 | Nanotechnology | 155 | 7.8K | 653 | 608 |
| 38 | Colloids | 152 | 7.5K | 420 | 328 |
| 39 | food technology | 249 | 7.5K | 67 | 85 |
| 40 | Cell Biology | 108 | 7.1K | 558 | 566 |
| 41 | Environmental Toxicology | 212 | 7.1K | 32 | 85 |
| 42 | Natural history | 37 | 7.0K | 790 | 785 |
| 43 | Nutrition | 207 | 7.0K | 296 | 353 |
| 44 | Environmental pollutants | 197 | 6.7K | 27 | 39 |
| 45 | environmental exposure | 189 | 6.5K | 13 | 16 |
| 46 | China | 281 | 6.5K | 89 | 78 |
| 47 | Genetics | 178 | 6.4K | 299 | 461 |
| 48 | pollutants | 187 | 6.4K | 16 | 37 |
| 49 | Biocompatible Materials | 104 | 5.9K | 579 | 534 |
| 50 | Parasitology | 186 | 5.8K | 71 | 72 |
| 51 | Optical materials | 103 | 5.7K | 280 | 236 |
| 52 | Plant diseases | 229 | 5.7K | 67 | 89 |
| 53 | Cytology | 96 | 5.5K | 662 | 670 |
| 54 | soil microbiology | 99 | 5.4K | 88 | 128 |
| 55 | Green Chemistry | 87 | 5.2K | 145 | 137 |
| 56 | Plant genetic engineering | 101 | 5.0K | 29 | 35 |
| 57 | Environmental Engineering | 121 | 4.8K | 339 | 405 |
| 58 | Entomology | 352 | 4.8K | 50 | 96 |
| 59 | Bioengineering | 107 | 4.7K | 516 | 598 |
| 60 | Food additives | 84 | 4.5K | 42 | 49 |
| 61 | Sustainable Engineering | 77 | 4.4K | 115 | 93 |
| 62 | Metals | 23 | 4.3K | 681 | 199 |
| 63 | hydrocolloids | 73 | 4.3K | 35 | 43 |
| 64 | gene mapping | 127 | 4.3K | 84 | 192 |
| 65 | Plant Biotechnology | 109 | 4.2K | 17 | 15 |
| 66 | Chromosome mapping | 125 | 4.2K | 70 | 125 |
| 67 | Human genetics | 10 | 4.1K | 916 | 612 |
| 68 | Environmental Management | 118 | 3.8K | 169 | 320 |
| 69 | Biomedical Engineering | 93 | 3.7K | 770 | 651 |
| 70 | Microbial Ecology | 94 | 3.7K | 244 | 378 |
| 71 | Environmental Policy | 100 | 3.6K | 275 | 446 |
| 72 | Microorganisms | 61 | 3.5K | 59 | 105 |
| 73 | Nanostructured Materials | 98 | 3.4K | 478 | 513 |
| 74 | Surface Chemistry | 85 | 3.4K | 705 | 615 |
| 75 | Water pollution | 64 | 3.3K | 438 | 393 |
| 76 | Soil Science | 71 | 3.2K | 210 | 179 |
| 77 | Insects | 241 | 3.2K | 13 | 71 |
| 78 | Parasitic Diseases | 76 | 3.1K | 148 | 159 |
| 79 | Polymers | 114 | 3.1K | 751 | 760 |
| 80 | Agriculture | 169 | 2.9K | 80 | 203 |
| 81 | Aquaculture | 140 | 2.9K | 78 | 134 |
| 82 | polymerization | 100 | 2.9K | 663 | 645 |
| 83 | Parasites | 75 | 2.9K | 103 | 83 |
| 84 | Plant Ecology | 54 | 2.9K | 287 | 269 |
| 85 | Horticulture | 86 | 2.8K | 22 | 11 |
| 86 | Water | 49 | 2.8K | 491 | 492 |
| 87 | Sustainable agriculture | 134 | 2.8K | 10 | 21 |
| 88 | Industrial Microbiology | 78 | 2.7K | 117 | 205 |
| 89 | Breeding | 70 | 2.7K | 105 | 93 |
| 90 | nanoscience | 47 | 2.6K | 666 | 615 |
| 91 | Biosensors | 36 | 2.5K | 204 | 178 |
| 92 | Virulence | 46 | 2.5K | 181 | 240 |
| 93 | Environmental Microbiology | 59 | 2.4K | 108 | 209 |
| 94 | Pharmacology | 93 | 2.4K | 908 | 983 |
| 95 | Medical Laboratory Science | 41 | 2.4K | 367 | 313 |
| 96 | Bioelectronics | 33 | 2.4K | 176 | 160 |
| 97 | Agricultural Engineering | 47 | 2.3K | 27 | 18 |
| 98 | actuators | 55 | 2.3K | 344 | 303 |
| 98 | transducers | 55 | 2.3K | 344 | 303 |
| 100 | Information Science | 41 | 2.3K | 468 | 315 |
| 101 | viruses | 80 | 2.3K | 182 | 303 |
| 102 | Magnetic Materials | 45 | 2.2K | 253 | 154 |
| 103 | Medical Microbiology | 31 | 2.2K | 579 | 450 |
| 104 | Genetic engineering | 91 | 2.1K | 143 | 334 |
| 105 | Renewable Energy Sources | 39 | 2.1K | 531 | 708 |
| 106 | Nanoparticles | 24 | 2.0K | 564 | 260 |
| 107 | Signal Processing | 58 | 1.9K | 505 | 524 |
| 108 | Electrochemistry | 72 | 1.9K | 906 | 808 |
| 109 | Composite Materials | 52 | 1.9K | 586 | 661 |
| 110 | Quality Control | 52 | 1.8K | 141 | 135 |
| 110 | food handling | 52 | 1.8K | 46 | 54 |
| 112 | Host-parasite interactions | 34 | 1.8K | 242 | 323 |
| 113 | sanitation | 42 | 1.8K | 315 | 482 |
| 114 | livestock | 51 | 1.8K | 45 | 17 |
| 115 | Immunity | 31 | 1.8K | 472 | 588 |
| 116 | Animal husbandry | 47 | 1.8K | 7 | 9 |
| 117 | Bacteriology | 32 | 1.8K | 483 | 458 |
| 118 | plant communities | 41 | 1.7K | 182 | 257 |
| 119 | Food Microbiology | 59 | 1.7K | 102 | 210 |
| 120 | biological evolution | 37 | 1.6K | 512 | 593 |
| 121 | Artificial Intelligence | 75 | 1.6K | 607 | 816 |
| 122 | Soil biology | 32 | 1.6K | 202 | 242 |
| 123 | Pesticides | 85 | 1.6K | 14 | 24 |
| 124 | Neural circuitry | 46 | 1.6K | 270 | 332 |
| 125 | Earth Sciences | 20 | 1.5K | 1,305 | 694 |
| 126 | Evolutionary Genetics | 59 | 1.5K | 10 | 17 |
| 126 | Molecular Epidemiology | 59 | 1.5K | 10 | 17 |
| 128 | Building Materials | 42 | 1.5K | 360 | 489 |
| 129 | Environmental Law | 25 | 1.5K | 239 | 283 |
| 130 | disease vectors | 42 | 1.5K | 96 | 92 |
| 131 | Molecular evolution | 40 | 1.5K | 253 | 347 |
| 132 | Plant tissue culture | 40 | 1.4K | 52 | 48 |
| 132 | Plant cell culture | 39 | 1.4K | 37 | 46 |
| 134 | Hazardous waste | 13 | 1.4K | 317 | 130 |
| 135 | Image Processing | 50 | 1.4K | 408 | 504 |
| 136 | radioactive waste | 12 | 1.4K | 276 | 123 |
| 136 | industrial waste | 12 | 1.4K | 296 | 123 |
| 138 | fuel cells | 13 | 1.4K | 571 | 359 |
| 139 | Immunology | 45 | 1.4K | 739 | 871 |
| 140 | Cancer | 34 | 1.4K | 844 | 897 |
| 141 | Molecular cloning | 64 | 1.4K | 93 | 182 |
| 142 | Economics | 74 | 1.4K | 861 | 903 |
| 143 | Systems Biology | 38 | 1.3K | 265 | 229 |
| 144 | Environmental Chemistry | 36 | 1.3K | 379 | 595 |
| 145 | Physiology | 47 | 1.3K | 981 | 1,085 |
| 146 | Recombinant DNA | 67 | 1.3K | 98 | 213 |
| 147 | Soil ecology | 51 | 1.3K | 49 | 111 |
| 148 | Genetic recombination | 57 | 1.3K | 99 | 196 |
| 149 | Spectrum analysis | 52 | 1.2K | 1,122 | 1,242 |
| 150 | infection | 17 | 1.2K | 564 | 395 |
| 151 | Electrophoresis | 48 | 1.1K | 207 | 263 |
| 152 | Telecommunication | 20 | 1.1K | 1,008 | 643 |
| 153 | Diet | 33 | 1.1K | 479 | 638 |
| 154 | Clinical Chemistry | 34 | 1.1K | 685 | 735 |
| 155 | Land use | 25 | 1.1K | 201 | 171 |
| 156 | Chromatographic analysis | 52 | 1.1K | 241 | 253 |
| 157 | Infections | 7 | 1.1K | 619 | 331 |
| 158 | Plant breeding | 45 | 1.0K | 76 | 97 |
| 159 | dietary supplements | 25 | 1.0K | 98 | 92 |
| 160 | Chemical Ecology | 18 | 1.0K | 128 | 99 |
| 161 | Vaccines | 33 | 1.0K | 365 | 358 |
| 162 | Chromatography | 47 | 1.0K | 198 | 221 |
| 163 | pheromones | 17 | 1.0K | 121 | 94 |
| 164 | Pharmaceutical Chemistry | 45 | 1.0K | 915 | 1,094 |
| 165 | Reproduction | 47 | 990 | 461 | 586 |
| 166 | Animal genetics | 42 | 984 | 90 | 107 |
| 167 | Pharmacognosy | 32 | 979 | 430 | 514 |
| 168 | Animal Nutrition | 45 | 975 | 74 | 95 |
| 169 | Statistical physics | 36 | 966 | 1,128 | 1,029 |
| 170 | Economic History | 43 | 962 | 761 | 677 |
| 171 | environmental indicators | 34 | 941 | 112 | 228 |
| 172 | Radiation effects | 25 | 911 | 58 | 88 |
| 173 | Technology | 39 | 901 | 965 | 1,005 |
| 174 | computer networks | 18 | 889 | 972 | 681 |
| 175 | Photonics | 25 | 884 | 655 | 678 |
| 176 | Cell death | 19 | 882 | 403 | 467 |
| 177 | Nuclear Physics | 28 | 866 | 1,680 | 1,476 |
| 178 | Molecular Genetics | 33 | 862 | 450 | 633 |
| 179 | animal diseases | 49 | 848 | 38 | 66 |
| 180 | Cybernetics | 14 | 831 | 683 | 479 |
| 181 | Mathematics | 109 | 819 | 1,252 | 1,546 |
| 182 | Energy Policy | 33 | 816 | 692 | 1,115 |
| 183 | Asia | 45 | 803 | 397 | 428 |
| 184 | Optics | 41 | 801 | 1,316 | 1,174 |
| 185 | Animal breeding | 38 | 795 | 150 | 163 |
| 186 | Marine Biology | 33 | 786 | 748 | 853 |
| 187 | Hydrology | 31 | 773 | 655 | 760 |
| 188 | soil conservation | 26 | 768 | 87 | 102 |
| 189 | Engineering Geology | 17 | 760 | 523 | 418 |
| 189 | Carbon | 11 | 760 | 637 | 566 |
| 191 | coal | 31 | 754 | 361 | 583 |
| 192 | Plant hormones | 17 | 751 | 45 | 45 |
| 193 | Evolution | 23 | 745 | 609 | 723 |
| 194 | Insect biochemistry | 37 | 744 | 38 | 106 |
| 195 | soil pollution | 26 | 732 | 34 | 38 |
| 196 | Transgenic plants | 40 | 726 | 22 | 81 |
| 197 | Ecological Engineering | 18 | 724 | 88 | 126 |
| 198 | Organic Chemistry | 58 | 723 | 734 | 1,122 |
| 199 | Crop Science | 3 | 719 | 137 | 8 |
| 200 | Proteomics | 32 | 718 | 149 | 318 |
| 201 | Microbial Biotechnology | 28 | 706 | 99 | 158 |
| 202 | Developmental Immunology | 42 | 692 | 33 | 131 |
| 203 | miniaturization | 15 | 676 | 760 | 808 |
| 204 | Forest Ecology | 29 | 675 | 216 | 351 |
| 205 | Nanostructures | 11 | 664 | 1,009 | 745 |
| 206 | Bioorganic chemistry | 41 | 660 | 698 | 1,045 |
| 207 | Mycology | 22 | 654 | 486 | 543 |
| 208 | economic policy | 26 | 650 | 704 | 526 |
| 209 | cytokines | 24 | 636 | 242 | 389 |
| 210 | Antibacterial agents | 15 | 634 | 154 | 157 |
| 211 | natural products | 26 | 632 | 474 | 475 |
| 212 | Molecular Microbiology | 21 | 630 | 272 | 439 |
| 212 | Phylogeny | 21 | 630 | 206 | 333 |
| 214 | Medicinal plants | 25 | 625 | 287 | 504 |
| 215 | management | 21 | 624 | 1,333 | 1,451 |
| 216 | soil management | 17 | 617 | 134 | 171 |
| 217 | food industry | 53 | 616 | 21 | 60 |
| 218 | Manufacturing Processes | 13 | 601 | 1,093 | 811 |
| 219 | Fungi | 20 | 597 | 298 | 425 |
| 219 | proteins | 32 | 597 | 511 | 674 |
| 221 | Immunotherapy | 22 | 596 | 525 | 730 |
| 222 | Systems Engineering | 19 | 582 | 771 | 685 |
| 222 | Microbial Genetics | 16 | 582 | 66 | 111 |
| 222 | Microelectronics | 7 | 582 | 1,152 | 780 |
| 225 | tillage | 13 | 580 | 121 | 150 |
| 226 | Emerging infectious diseases | 22 | 572 | 31 | 55 |
| 227 | Medical Technology | 1 | 566 | 2,341 | 443 |
| 228 | Soil Mechanics | 17 | 562 | 422 | 422 |
| 229 | Genes | 26 | 559 | 234 | 288 |
| 230 | Rock Mechanics | 11 | 555 | 434 | 349 |
| 231 | phytopathogenic bacteria | 13 | 552 | 75 | 109 |
| 232 | Immunopharmacology | 21 | 541 | 235 | 303 |
| 233 | Energy Conversion | 13 | 528 | 545 | 748 |
| 234 | Energy Storage | 14 | 519 | 504 | 502 |
| 235 | animals | 37 | 518 | 182 | 274 |
| 236 | Information Theory | 34 | 513 | 308 | 500 |
| 237 | Transportation | 12 | 506 | 774 | 648 |
| 238 | Production Management | 3 | 505 | 1,150 | 670 |
| 239 | Engineering | 34 | 502 | 1,243 | 1,451 |
| 240 | Biodiversity | 34 | 501 | 499 | 890 |
| 241 | Marine Pollution | 11 | 490 | 581 | 537 |
| 242 | Environmental Geology | 19 | 489 | 520 | 602 |
| 242 | Computational Biology | 20 | 489 | 837 | 989 |
| 242 | Molecular Spectroscopy | 19 | 489 | 654 | 607 |
| 245 | Forest Management | 23 | 485 | 256 | 399 |
| 246 | Structural Engineering | 19 | 480 | 620 | 629 |
| 247 | mycoses | 7 | 479 | 446 | 413 |
| 248 | Nervous system | 17 | 478 | 933 | 1,070 |
| 249 | plant viruses | 13 | 470 | 63 | 62 |
| 250 | food contamination | 36 | 467 | 80 | 193 |
| 251 | United States | 27 | 465 | 1,591 | 1,815 |
| 252 | city planning | 13 | 461 | 701 | 584 |
| 253 | Robotics | 11 | 458 | 915 | 666 |
| 254 | genome | 18 | 450 | 503 | 810 |
| 255 | Public Health | 11 | 445 | 2,607 | 2,100 |
| 256 | Bacterial infections | 7 | 443 | 432 | 433 |
| 257 | Fuzzy systems | 24 | 436 | 355 | 355 |
| 258 | Geomorphology | 15 | 431 | 589 | 723 |
| 259 | energy conservation | 11 | 428 | 1,025 | 1,148 |
| 260 | Immunochemistry | 30 | 424 | 147 | 311 |
| 261 | Biofilms | 9 | 422 | 27 | 30 |
| 262 | Molecular ecology | 12 | 418 | 502 | 635 |
| 263 | Information Technology | 16 | 412 | 951 | 1,022 |
| 264 | Urban Policy | 11 | 408 | 333 | 298 |
| 265 | Analytical Biochemistry | 24 | 407 | 425 | 667 |
| 265 | Ocean Engineering | 10 | 407 | 942 | 780 |
| 267 | Cytogenetics | 4 | 406 | 1,022 | 720 |
| 268 | gastrointestinal tract | 5 | 403 | 212 | 178 |
| 269 | Nanochemistry | 24 | 399 | 214 | 343 |
| 270 | Bioinorganic chemistry | 11 | 398 | 755 | 609 |
| 270 | Social Change | 6 | 398 | 706 | 646 |
| 272 | Australia | 16 | 392 | 626 | 559 |
| 273 | Histology | 22 | 366 | 614 | 881 |
| 273 | Foodborne diseases | 16 | 366 | 47 | 65 |
| 275 | Solar Energy | 7 | 365 | 1,148 | 943 |
| 276 | Production Engineering | 3 | 358 | 1,887 | 743 |
| 277 | Cell differentiation | 10 | 351 | 754 | 932 |
| 278 | Obesity | 4 | 350 | 1,435 | 1,001 |
| 278 | Hydrocarbons | 3 | 350 | 116 | 17 |
| 280 | Earthquake Engineering | 10 | 347 | 753 | 684 |
| 281 | ecosystem | 12 | 343 | 597 | 771 |
| 282 | Radioisotopes | 16 | 341 | 359 | 270 |
| 283 | Signal Transduction | 14 | 337 | 574 | 835 |
| 283 | Veterinary Immunology | 11 | 337 | 132 | 122 |
| 285 | Zoology | 38 | 336 | 663 | 1,011 |
| 285 | nucleic acids | 17 | 336 | 660 | 1,011 |
| 287 | Endocrinology | 22 | 335 | 932 | 1,461 |
| 287 | Geophysics | 19 | 335 | 1,405 | 1,719 |
| 287 | Nanobiotechnology | 10 | 335 | 128 | 256 |
| 290 | Astronomy | 7 | 333 | 1,737 | 1,477 |
| 291 | Solid State Chemistry | 19 | 329 | 1,130 | 1,206 |
| 292 | Biodiversity conservation | 18 | 325 | 576 | 1,167 |
| 293 | energy resources | 6 | 324 | 925 | 1,024 |
| 294 | Sustainable Development | 22 | 323 | 508 | 1,098 |
| 295 | Behavior | 5 | 320 | 2,195 | 1,819 |
| 296 | Psychology | 10 | 319 | 2,627 | 2,098 |
| 296 | Arthropods | 25 | 319 | 11 | 26 |
| 298 | Developing countries | 22 | 314 | 690 | 1,044 |
| 299 | Herbal medicine | 15 | 313 | 187 | 360 |
| 300 | Ceramics | 14 | 312 | 606 | 602 |
| 300 | Plastics | 11 | 312 | 863 | 696 |
| 302 | biofuels | 7 | 307 | 124 | 202 |
| 303 | Tropical Medicine | 14 | 304 | 711 | 692 |
| 304 | environmental remediation | 10 | 302 | 67 | 78 |
| 305 | Surface properties | 9 | 297 | 597 | 721 |
| 306 | DNS | 15 | 296 | 103 | 178 |
| 307 | solar power | 3 | 292 | 824 | 496 |
| 307 | solar cells | 3 | 292 | 887 | 537 |
| 307 | Industry | 3 | 292 | 159 | 136 |
| 310 | Surface-Active Agents | 8 | 291 | 609 | 659 |
| 311 | Diagnostic microbiology | 6 | 289 | 697 | 840 |
| 311 | Chemical analysis | 11 | 289 | 509 | 594 |
| 313 | Pharmacy | 4 | 287 | 1,638 | 1,062 |
| 313 | free radicals | 4 | 287 | 1,047 | 922 |
| 315 | Phytochemistry | 9 | 286 | 58 | 67 |
| 315 | Phytoremediation | 9 | 286 | 58 | 67 |
| 315 | Bioreactors | 9 | 286 | 58 | 67 |
| 318 | Animal Physiology | 8 | 285 | 72 | 74 |
| 318 | Natural selection | 8 | 285 | 72 | 74 |
| 318 | Cellulose | 15 | 285 | 148 | 304 |
| 318 | genetic selection | 8 | 285 | 72 | 74 |
| 322 | drug toxicity | 8 | 284 | 154 | 155 |
| 323 | cell interaction | 11 | 283 | 464 | 640 |
| 323 | Bacterial diseases | 15 | 283 | 19 | 100 |
| 323 | Egypt | 12 | 283 | 111 | 209 |
| 326 | Lipids | 7 | 282 | 780 | 791 |
| 327 | Environmental Psychology | 3 | 277 | 349 | 298 |
| 327 | heredity | 19 | 277 | 140 | 258 |
| 329 | Fishery management | 13 | 276 | 310 | 339 |
| 329 | Recycling | 6 | 276 | 358 | 550 |
| 331 | human behavior | 2 | 275 | 2,616 | 1,704 |
| 332 | Industrial Engineering | 9 | 270 | 1,017 | 1,009 |
| 333 | Logistics | 8 | 268 | 267 | 343 |
| 333 | Environmental Geochemistry | 12 | 268 | 103 | 147 |
| 333 | Minerals | 12 | 268 | 234 | 292 |
| 336 | amino acids | 5 | 267 | 393 | 269 |
| 337 | Food Preservation | 23 | 266 | 120 | 229 |
| 338 | Geography | 12 | 265 | 968 | 1,111 |
| 339 | Electromagnetic compatibility | 9 | 263 | 162 | 124 |
| 339 | Ultrasonics | 7 | 263 | 742 | 780 |
| 339 | Sonochemistry | 7 | 263 | 335 | 497 |
| 342 | big data | 7 | 261 | 263 | 236 |
| 343 | Sarcopenia | 2 | 260 | 462 | 288 |
| 343 | Muscles | 2 | 260 | 852 | 513 |
| 345 | Glass | 8 | 257 | 604 | 573 |
| 345 | pottery | 8 | 257 | 577 | 564 |
| 347 | Pharmaceutical Technology | 8 | 255 | 919 | 903 |
| 347 | catalytic activity | 8 | 255 | 388 | 418 |
| 349 | Electrochemical Analysis | 14 | 254 | 715 | 880 |
| 349 | finance | 18 | 254 | 952 | 1,220 |
| 351 | immunoassay | 18 | 253 | 11 | 15 |
| 352 | Ethnology | 8 | 252 | 853 | 521 |
| 352 | Japan | 14 | 252 | 671 | 681 |
| 354 | Information Systems | 5 | 251 | 1,067 | 707 |
| 354 | venom | 12 | 251 | 249 | 353 |
| 354 | Toxins | 12 | 251 | 286 | 395 |
| 357 | Biomass | 12 | 243 | 196 | 464 |
| 358 | Business | 5 | 241 | 1,709 | 1,522 |
| 359 | Wireless Communication Systems | 15 | 239 | 1,092 | 1,268 |
| 360 | protein | 13 | 237 | 502 | 663 |
| 361 | biological monitoring | 8 | 234 | 214 | 245 |
| 362 | Animal Behavior | 13 | 233 | 863 | 1,253 |
| 363 | Proteome | 6 | 231 | 742 | 759 |
| 364 | Data Mining | 7 | 228 | 594 | 578 |
| 364 | Numerical Analysis | 16 | 228 | 1,074 | 1,103 |
| 366 | Animal health | 10 | 224 | 217 | 131 |
| 366 | mathematical analysis | 27 | 224 | 924 | 1,147 |
| 368 | herbicides | 7 | 222 | 143 | 110 |
| 369 | Phytotherapy | 8 | 220 | 251 | 338 |
| 370 | Multimedia Systems | 20 | 214 | 582 | 925 |
| 370 | Stem cells | 11 | 214 | 657 | 864 |
| 372 | Comparative Physiology | 8 | 209 | 454 | 503 |
| 373 | Developmental Biology | 7 | 208 | 1,147 | 1,338 |
| 373 | Bioremediation | 7 | 208 | 448 | 518 |
| 375 | Internet of Things | 8 | 207 | 639 | 801 |
| 375 | Neurophysiology | 3 | 207 | 2,305 | 1,726 |
| 375 | internet | 9 | 207 | 871 | 1,019 |
| 375 | Psychophysiology | 2 | 207 | 2,562 | 1,711 |
| 379 | clay | 7 | 206 | 470 | 622 |
| 380 | Embryology | 12 | 205 | 665 | 993 |
| 381 | Genetic regulation | 10 | 204 | 492 | 752 |
| 382 | Forecasting | 6 | 202 | 339 | 280 |
| 382 | biological factors | 12 | 202 | 891 | 1,143 |
| 384 | Microscopy | 8 | 201 | 810 | 643 |
| 385 | Bioinformatics | 17 | 200 | 780 | 1,287 |
| 385 | RNA | 11 | 200 | 218 | 407 |
| 387 | Soil fertility | 5 | 199 | 210 | 260 |
| 388 | Radiobiology | 8 | 196 | 687 | 739 |
| 388 | Interfaces | 10 | 196 | 81 | 112 |
| 390 | Oxidative stress | 6 | 195 | 541 | 852 |
| 391 | Tourism | 8 | 192 | 983 | 1,303 |
| 392 | Computer Graphics | 12 | 190 | 808 | 1,000 |
| 393 | Agricultural Ecology | 12 | 189 | 427 | 870 |
| 394 | pigments | 7 | 187 | 517 | 522 |
| 395 | Mechanical Engineering | 11 | 186 | 1,339 | 1,223 |
| 395 | Food Science | 11 | 186 | 31 | 56 |
| 397 | Nuclear Medicine | 6 | 182 | 598 | 527 |
| 398 | Electronics | 7 | 181 | 2,201 | 1,895 |
| 398 | Measurement | 11 | 181 | 634 | 825 |
| 398 | System analysis | 4 | 181 | 2,069 | 1,498 |
| 398 | Fertilizers | 7 | 181 | 184 | 224 |
| 398 | Population | 9 | 181 | 443 | 594 |
| 398 | drugs | 13 | 181 | 862 | 1,228 |
| 404 | Cell communication | 7 | 180 | 306 | 505 |
| 405 | Population Genetics | 16 | 177 | 470 | 939 |
| 405 | Heat Exchangers | 6 | 177 | 903 | 1,039 |
| 405 | Gene expression regulation | 10 | 177 | 430 | 637 |
| 405 | enzymes | 12 | 177 | 691 | 1,054 |
| 409 | commerce | 10 | 176 | 783 | 1,010 |
| 410 | Mites | 6 | 173 | 249 | 156 |
| 411 | Enzyme | 9 | 170 | 210 | 451 |
| 412 | economic indicators | 8 | 169 | 29 | 24 |
| 413 | Acarology | 4 | 168 | 227 | 134 |
| 413 | Ticks | 4 | 168 | 223 | 134 |
| 413 | Acari | 4 | 168 | 223 | 134 |
| 416 | International Finance | 15 | 164 | 724 | 1,194 |
| 416 | Luminescence | 12 | 164 | 611 | 782 |
| 418 | Urban Planning | 7 | 163 | 191 | 298 |
| 418 | Biogeography | 4 | 163 | 840 | 888 |
| 418 | community development | 7 | 163 | 327 | 349 |
| 418 | Climate change | 4 | 163 | 813 | 1,192 |
| 418 | Microprocessors | 3 | 163 | 623 | 260 |
| 418 | Eutrophication | 4 | 163 | 774 | 1,171 |
| 418 | Housing | 7 | 163 | 256 | 348 |
| 425 | Metabolism | 8 | 161 | 1,303 | 1,747 |
| 426 | Cloud Computing | 3 | 160 | 313 | 223 |
| 426 | Intelligent Transportation Systems | 4 | 160 | 951 | 901 |
| 428 | Medical Anthropology | 6 | 159 | 796 | 1,028 |
| 429 | Evolutionary Computation | 7 | 158 | 219 | 475 |
| 429 | economic analysis | 4 | 158 | 171 | 138 |
| 431 | Anthropology | 5 | 157 | 1,154 | 876 |
| 431 | Ethnobotany | 5 | 157 | 79 | 161 |
| 431 | Traditional medicine | 5 | 157 | 93 | 162 |
| 431 | ethnobiology | 5 | 157 | 117 | 199 |
| 431 | Ethnomedicine | 5 | 157 | 78 | 161 |
| 436 | Automation | 7 | 156 | 1,511 | 1,668 |
| 437 | cell physiology | 6 | 154 | 947 | 1,204 |
| 438 | Geochemistry | 11 | 153 | 1,041 | 1,431 |
| 439 | Health Information Management | 2 | 152 | 431 | 538 |
| 440 | Econometrics | 17 | 150 | 527 | 803 |
| 441 | Food inspection | 3 | 148 | 31 | 17 |
| 441 | food quality | 3 | 148 | 31 | 17 |
| 443 | Semiconductors | 10 | 145 | 1,211 | 1,290 |
| 443 | multimedia | 6 | 145 | 324 | 446 |
| 443 | Interactive multimedia | 6 | 145 | 358 | 473 |
| 443 | cloning | 8 | 145 | 319 | 606 |
| 447 | Landscape Ecology | 3 | 143 | 458 | 423 |
| 447 | Mitochondrial DNA | 23 | 143 | 6 | 18 |
| 449 | Oncology | 5 | 142 | 1,398 | 1,800 |
| 449 | Organometallic chemistry | 13 | 142 | 1,045 | 1,392 |
| 449 | Invertebrates | 9 | 142 | 277 | 398 |
| 449 | Autism | 1 | 142 | 1,008 | 592 |
| 453 | Psychiatry | 6 | 141 | 2,535 | 2,630 |
| 454 | Quantum electronics | 6 | 139 | 1,169 | 1,018 |
| 454 | transgenic organisms | 14 | 139 | 23 | 181 |
| 454 | transgenic animals | 14 | 139 | 21 | 178 |
| 454 | wood | 13 | 139 | 173 | 268 |
| 458 | Economic Development | 5 | 138 | 1,175 | 1,283 |
| 458 | Fisheries | 7 | 138 | 996 | 1,108 |
| 460 | Cryptography | 14 | 137 | 195 | 264 |
| 460 | Agricultural Biotechnology | 11 | 137 | 82 | 60 |
| 460 | Calorimetry | 6 | 137 | 860 | 757 |
| 460 | Thermal analysis | 6 | 137 | 860 | 757 |
| 464 | Mobile Computing | 8 | 135 | 641 | 785 |
| 464 | Water chemistry | 4 | 135 | 224 | 159 |
| 466 | Biochemical Genetics | 12 | 133 | 95 | 147 |
| 467 | Photochemistry | 3 | 132 | 1,649 | 1,325 |
| 467 | Photobiology | 3 | 132 | 1,385 | 1,072 |
| 467 | Development | 5 | 132 | 570 | 754 |
| 470 | Energy Harvesting | 3 | 131 | 440 | 588 |
| 470 | machinery | 7 | 131 | 481 | 508 |
| 472 | Food service management | 3 | 130 | 416 | 530 |
| 472 | Molecular structure | 11 | 130 | 1,289 | 1,669 |
| 474 | Chemical industry | 9 | 129 | 704 | 825 |
| 474 | Economic Assistance | 4 | 129 | 573 | 697 |
| 474 | antibiotics | 2 | 129 | 296 | 145 |
| 477 | econometric models | 5 | 128 | 447 | 506 |
| 478 | Computer Vision | 4 | 127 | 981 | 1,016 |
| 479 | East Asia | 7 | 126 | 313 | 255 |
| 479 | Safety management | 11 | 126 | 151 | 288 |
| 481 | Remote Sensing | 14 | 125 | 603 | 887 |
| 481 | Biodegradation | 4 | 125 | 619 | 702 |
| 483 | forest policy | 11 | 124 | 130 | 252 |
| 484 | Solid State Physics | 10 | 123 | 2,242 | 2,488 |
| 484 | Ethology | 5 | 123 | 1,085 | 1,365 |
| 486 | Animal Biotechnology | 14 | 122 | 24 | 121 |
| 486 | lasers | 11 | 122 | 1,160 | 1,474 |
| 488 | Waste management | 5 | 120 | 1,088 | 997 |
| 489 | Medical Physics | 6 | 118 | 1,043 | 1,226 |
| 489 | Green Technology | 2 | 118 | 574 | 301 |
| 489 | Swarm Intelligence | 4 | 118 | 211 | 288 |
| 492 | embryonic development | 8 | 117 | 182 | 346 |
| 492 | biopolymers | 4 | 117 | 982 | 973 |
| 494 | Membranes | 5 | 116 | 1,284 | 1,530 |
| 495 | Marine Biotechnology | 9 | 115 | 61 | 209 |
| 495 | Mathematical Physics | 15 | 115 | 1,436 | 1,837 |
| 497 | Agricultural systems | 4 | 114 | 239 | 323 |
| 498 | Oxidation-reduction | 4 | 113 | 636 | 942 |
| 499 | world | 2 | 111 | 850 | 823 |
| 500 | Oceanography | 7 | 109 | 1,072 | 1,373 |
| 500 | Operations Research | 5 | 109 | 1,741 | 1,710 |
| 500 | peptides | 8 | 109 | 383 | 540 |
| 503 | Agronomy | 10 | 108 | 159 | 531 |
| 503 | air quality management | 6 | 108 | 296 | 487 |
| 503 | Aerosols | 3 | 108 | 512 | 426 |
| 503 | Hormones | 7 | 108 | 749 | 1,070 |
| 503 | aerosol | 3 | 108 | 375 | 309 |
| 508 | Social Sciences | 15 | 106 | 1,510 | 2,299 |
| 509 | Bioenergetics | 4 | 105 | 700 | 837 |
| 509 | Drug design | 7 | 105 | 926 | 1,328 |
| 509 | Radiation | 10 | 105 | 1,164 | 1,528 |
| 509 | Water quality management | 9 | 105 | 1,009 | 1,436 |
| 509 | crops | 7 | 105 | 45 | 68 |
| 514 | Physical Geography | 7 | 104 | 268 | 408 |
| 515 | Veterinary Pathology | 9 | 102 | 169 | 224 |
| 516 | Meteorology | 8 | 100 | 1,279 | 1,936 |
| 517 | Lightweight concrete | 2 | 99 | 519 | 667 |
| 517 | Inflammation | 2 | 99 | 1,190 | 1,147 |
| 517 | concrete | 2 | 99 | 1,082 | 1,062 |
| 520 | scientific societies | 6 | 98 | 426 | 607 |
| 521 | Grasslands | 11 | 97 | 16 | 24 |
| 521 | Leisure | 5 | 97 | 238 | 339 |
| 523 | health planning | 8 | 96 | 1,349 | 1,778 |
| 524 | drug resistance | 10 | 95 | 238 | 703 |
| 525 | Coding Theory | 6 | 94 | 234 | 197 |
| 525 | Respiratory Infections | 1 | 94 | 528 | 281 |
| 525 | Influenza | 1 | 94 | 424 | 209 |
| 528 | Cell survival | 3 | 91 | 185 | 247 |
| 528 | molecular chaperones | 3 | 91 | 221 | 249 |
| 530 | Drug delivery systems | 4 | 90 | 1,325 | 1,572 |
| 531 | Cell cycle | 3 | 89 | 280 | 280 |
| 531 | cell proliferation | 3 | 89 | 308 | 298 |
| 533 | Marine Ecology | 6 | 88 | 538 | 677 |
| 533 | Landslides | 1 | 88 | 471 | 355 |
| 533 | Europe | 5 | 88 | 2,155 | 2,165 |
| 536 | Imaging systems | 8 | 87 | 393 | 498 |
| 537 | Humanities | 11 | 86 | 810 | 1,208 |
| 537 | Molecular Pharmacology | 6 | 86 | 563 | 941 |
| 537 | Educational Psychology | 2 | 86 | 1,639 | 1,278 |
| 537 | Municipal Engineering | 2 | 86 | 461 | 349 |
| 541 | Computer Science | 12 | 85 | 940 | 1,575 |
| 542 | Plant Morphology | 6 | 84 | 378 | 527 |
| 542 | Electromagnetism | 4 | 84 | 874 | 869 |
| 544 | Edible plants | 1 | 83 | 495 | 288 |
| 545 | Physical organic chemistry | 4 | 82 | 1,260 | 1,268 |
| 545 | drug evaluation | 2 | 82 | 1,406 | 1,230 |
| 547 | Development Economics | 6 | 81 | 216 | 377 |
| 548 | Ecosystem management | 7 | 80 | 391 | 694 |
| 548 | Southeast Asia | 17 | 80 | 67 | 212 |
| 550 | Geology | 3 | 79 | 2,514 | 2,315 |
| 550 | Human-Computer Interaction | 6 | 79 | 1,057 | 1,502 |
| 550 | land degradation | 5 | 79 | 329 | 624 |
| 550 | degradation | 5 | 79 | 329 | 624 |
| 554 | Drying | 6 | 78 | 235 | 388 |
| 555 | infrared radiation | 2 | 77 | 753 | 447 |
| 555 | Mycotoxins | 3 | 77 | 141 | 118 |
| 555 | synthesis | 8 | 77 | 634 | 805 |
| 558 | indoor air pollution | 2 | 76 | 482 | 438 |
| 558 | Ventilation | 2 | 76 | 667 | 509 |
| 558 | North America | 6 | 76 | 525 | 679 |
| 558 | Sick building syndrome | 2 | 76 | 482 | 438 |
| 562 | Radiopharmaceuticals | 4 | 75 | 242 | 158 |
| 562 | Corporate Social Responsibility | 2 | 75 | 401 | 573 |
| 562 | environmental auditing | 2 | 75 | 421 | 579 |
| 562 | cell adhesion molecules | 1 | 75 | 387 | 410 |
| 562 | data protection | 5 | 75 | 385 | 465 |
| 567 | Organometallic compounds | 6 | 74 | 982 | 1,266 |
| 568 | Investment analysis | 10 | 73 | 379 | 934 |
| 568 | Harmonic Analysis | 3 | 73 | 149 | 192 |
| 570 | Microfabrication | 1 | 72 | 652 | 326 |
| 570 | Porous materials | 2 | 72 | 991 | 664 |
| 572 | Nanophotonics | 5 | 71 | 230 | 430 |
| 572 | silicon | 3 | 71 | 351 | 262 |
| 574 | Decision making | 6 | 70 | 989 | 1,452 |
| 575 | Biomolecules | 1 | 69 | 784 | 658 |
| 576 | Process Control | 2 | 68 | 1,154 | 1,363 |
| 576 | health behavior | 3 | 68 | 869 | 951 |
| 576 | Genetic databases | 4 | 68 | 9 | 10 |
| 576 | individual differences | 1 | 68 | 530 | 444 |
| 576 | Detectors | 7 | 68 | 994 | 1,545 |
| 581 | Mass Spectrometry | 6 | 67 | 795 | 1,082 |
| 581 | Water quality | 2 | 67 | 316 | 242 |
| 581 | civilization | 1 | 67 | 1,583 | 370 |
| 581 | Culture | 1 | 67 | 1,722 | 834 |
| 585 | Rural Development | 3 | 65 | 511 | 627 |
| 586 | Pest control | 5 | 64 | 80 | 106 |
| 586 | phenomics | 2 | 64 | 44 | 38 |
| 586 | Quality of life | 6 | 64 | 954 | 1,656 |
| 586 | Great Lakes | 1 | 64 | 370 | 258 |
| 586 | Autoimmune diseases | 1 | 64 | 825 | 728 |
| 586 | recreation | 2 | 64 | 821 | 591 |
| 592 | Epidemiology | 5 | 63 | 2,466 | 3,130 |
| 592 | Functional foods | 3 | 63 | 346 | 492 |
| 594 | Probiotics | 6 | 62 | 57 | 266 |
| 594 | DNA | 12 | 62 | 171 | 634 |
| 596 | Ecological Genetics | 11 | 61 | 227 | 609 |
| 596 | Engineering Mathematics | 9 | 61 | 1,072 | 1,563 |
| 596 | Conservation Biology | 11 | 61 | 527 | 1,276 |
| 596 | Socioeconomic Factors | 3 | 61 | 771 | 968 |
| 596 | Algal blooms | 2 | 61 | 344 | 433 |
| 596 | Cyanobacteria | 2 | 61 | 344 | 433 |
| 596 | microalgae | 2 | 61 | 344 | 433 |
| 603 | Architectural Design | 4 | 60 | 394 | 392 |
| 603 | reforestation | 4 | 60 | 108 | 161 |
| 603 | global environmental change | 2 | 60 | 972 | 1,145 |
| 603 | afforestation | 4 | 60 | 108 | 161 |
| 603 | atmosphere | 2 | 60 | 927 | 962 |
| 603 | body temperature | 5 | 60 | 346 | 629 |
| 603 | alcoholism | 3 | 60 | 1,239 | 1,414 |
| 603 | Mental illness | 2 | 60 | 1,808 | 1,935 |
| 611 | Combinatorial chemistry | 4 | 59 | 590 | 998 |
| 611 | Mental Disorders | 1 | 59 | 3,246 | 2,565 |
| 611 | Biogeochemistry | 1 | 59 | 1,504 | 1,362 |
| 611 | Technological Innovations | 3 | 59 | 1,080 | 1,291 |
| 615 | Mechatronics | 6 | 58 | 596 | 1,051 |
| 615 | Health | 4 | 58 | 1,707 | 2,039 |
| 615 | optical devices | 5 | 58 | 336 | 519 |
| 618 | Regional Planning | 3 | 57 | 1,421 | 1,522 |
| 618 | visualization | 9 | 57 | 742 | 927 |
| 620 | Plant Pathology | 5 | 56 | 98 | 149 |
| 620 | Cognitive Science | 3 | 56 | 1,574 | 1,881 |
| 620 | Microbial Metabolism | 1 | 56 | 418 | 391 |
| 620 | wildlife diseases | 6 | 56 | 65 | 118 |
| 624 | Telecommunications | 4 | 55 | 673 | 806 |
| 624 | Simulation Methods | 1 | 55 | 1,747 | 1,143 |
| 624 | Pacific Islands | 1 | 55 | 612 | 243 |
| 624 | drug addiction | 2 | 55 | 1,130 | 1,210 |
| 624 | eugenics | 1 | 55 | 929 | 631 |
| 629 | Linguistics | 8 | 54 | 814 | 1,155 |
| 629 | Biological Systems | 3 | 54 | 544 | 709 |
| 629 | Adhesion | 3 | 54 | 728 | 769 |
| 629 | Ceramic materials | 3 | 54 | 1,347 | 1,461 |
| 629 | Genetic variation | 2 | 54 | 150 | 165 |
| 629 | ovary | 2 | 54 | 254 | 280 |
| 629 | Condensed Matter | 5 | 54 | 2,191 | 2,575 |
| 629 | adhesives | 3 | 54 | 774 | 777 |
| 637 | Happiness | 4 | 52 | 336 | 709 |
| 637 | Taste | 2 | 52 | 390 | 391 |
| 637 | flavor | 2 | 52 | 250 | 291 |
| 637 | smell | 2 | 52 | 390 | 391 |
| 637 | Combinatorial analysis | 7 | 52 | 677 | 782 |
| 637 | electrocatalysis | 3 | 52 | 88 | 121 |
| 643 | Computational Complexity | 4 | 51 | 911 | 1,026 |
| 643 | Food Security | 1 | 51 | 320 | 296 |
| 645 | Control Theory | 8 | 50 | 1,133 | 1,699 |
| 645 | Reproductive health | 2 | 50 | 906 | 925 |
| 645 | Fracture mechanics | 2 | 50 | 1,502 | 1,490 |
| 645 | drug development | 4 | 50 | 697 | 1,293 |
| 649 | Civil Engineering | 2 | 49 | 1,768 | 1,296 |
| 649 | Emulsions | 3 | 49 | 369 | 367 |
| 651 | Human Geography | 1 | 48 | 1,675 | 1,137 |
| 651 | Urban Geography | 1 | 48 | 423 | 304 |
| 651 | Cross-Cultural Studies | 3 | 48 | 732 | 921 |
| 651 | Soft Condensed Matter | 3 | 48 | 1,028 | 1,264 |
| 651 | cross-cultural comparison | 3 | 48 | 532 | 643 |
| 656 | Functional Analysis | 5 | 47 | 1,110 | 1,320 |
| 656 | Health Education | 2 | 47 | 2,031 | 1,867 |
| 656 | preventive medicine | 2 | 47 | 1,252 | 1,390 |
| 656 | Health promotion | 2 | 47 | 1,310 | 1,197 |
| 656 | Language planning | 7 | 47 | 62 | 133 |
| 656 | Language spread | 7 | 47 | 2 | 6 |
| 656 | Meteorites | 4 | 47 | 718 | 1,141 |
| 663 | Statistics | 13 | 46 | 1,299 | 2,130 |
| 663 | Educational Technology | 3 | 46 | 1,665 | 2,009 |
| 663 | Family | 3 | 46 | 950 | 1,100 |
| 663 | Capital market | 4 | 46 | 350 | 670 |
| 663 | biological invasions | 4 | 46 | 524 | 870 |
| 668 | Computational Intelligence | 4 | 45 | 550 | 814 |
| 668 | Atomic spectroscopy | 2 | 45 | 1,295 | 1,208 |
| 668 | Aquatic ecology | 3 | 45 | 948 | 1,094 |
| 671 | Strategic planning | 1 | 44 | 1,270 | 1,029 |
| 671 | Communication | 5 | 44 | 1,582 | 2,259 |
| 671 | Planets | 3 | 44 | 1,278 | 1,777 |
| 671 | Aging | 3 | 44 | 2,208 | 2,501 |
| 675 | Sedimentology | 5 | 43 | 446 | 864 |
| 675 | Child Development | 2 | 43 | 1,885 | 2,062 |
| 675 | energy development | 3 | 43 | 843 | 1,327 |
| 678 | Sociology | 12 | 42 | 1,462 | 3,182 |
| 678 | Actuarial Science | 1 | 42 | 442 | 324 |
| 678 | Fluid Dynamics | 2 | 42 | 1,275 | 1,258 |
| 678 | Drug targeting | 1 | 42 | 593 | 639 |
| 678 | water supply | 2 | 42 | 1,009 | 1,249 |
| 678 | insurance | 1 | 42 | 659 | 463 |
| 684 | Telecommunication Systems | 4 | 41 | 1,454 | 1,714 |
| 684 | Nuclear Chemistry | 4 | 41 | 958 | 1,040 |
| 684 | Radiochemistry | 4 | 41 | 862 | 945 |
| 684 | Nonlinear Dynamics | 4 | 41 | 1,606 | 2,017 |
| 684 | Metabolic diseases | 1 | 41 | 2,322 | 2,266 |
| 684 | Crystallography | 13 | 41 | 829 | 1,270 |
| 684 | Zeolites | 2 | 41 | 1,129 | 1,431 |
| 691 | Nutrition physiology | 2 | 40 | 878 | 1,073 |
| 691 | Genetic algorithms | 3 | 40 | 314 | 610 |
| 691 | environmental issues | 1 | 40 | 801 | 761 |
| 694 | Visual Communication | 4 | 39 | 352 | 564 |
| 694 | Power Electronics | 5 | 39 | 818 | 1,309 |
| 694 | Clinical Immunology | 2 | 39 | 1,022 | 1,237 |
| 694 | Image enhancement | 4 | 39 | 271 | 513 |
| 694 | Chemical kinetics | 1 | 39 | 1,300 | 760 |
| 694 | Entropy | 4 | 39 | 1,073 | 1,392 |
| 694 | Steroids | 2 | 39 | 1,012 | 1,151 |
| 701 | Education | 1 | 38 | 4,649 | 3,379 |
| 701 | Food Safety | 2 | 38 | 383 | 428 |
| 701 | Medical genetics | 1 | 38 | 2,435 | 2,501 |
| 701 | Raman spectroscopy | 2 | 38 | 993 | 1,118 |
| 701 | Medical innovations | 1 | 38 | 1,283 | 1,511 |
| 701 | toxicity testing | 3 | 38 | 614 | 1,038 |
| 701 | land | 1 | 38 | 137 | 43 |
| 701 | Mollusks | 5 | 38 | 116 | 219 |
| 709 | Restoration Ecology | 2 | 37 | 528 | 657 |
| 709 | Fluorescence | 2 | 37 | 647 | 602 |
| 711 | Electrical Engineering | 7 | 36 | 2,137 | 2,748 |
| 711 | Infection control | 2 | 36 | 411 | 628 |
| 713 | Genetic Toxicology | 1 | 35 | 755 | 827 |
| 713 | Vaccination | 1 | 35 | 450 | 454 |
| 713 | Chromosomes | 1 | 35 | 1,249 | 1,256 |
| 716 | Water Purification | 3 | 34 | 1,153 | 1,521 |
| 716 | Infrared spectroscopy | 1 | 34 | 690 | 580 |
| 716 | Informatics | 2 | 34 | 1,026 | 1,211 |
| 716 | Nonlinear mechanics | 1 | 34 | 805 | 653 |
| 720 | Neurology | 7 | 33 | 2,614 | 4,392 |
| 720 | Health Policy | 1 | 33 | 2,902 | 2,444 |
| 720 | Cost of illness | 2 | 33 | 68 | 87 |
| 720 | starch | 4 | 33 | 280 | 516 |
| 720 | Teaching | 2 | 33 | 2,100 | 2,082 |
| 720 | Crystal growth | 2 | 33 | 1,246 | 1,462 |
| 726 | Paleontology | 2 | 32 | 1,396 | 1,467 |
| 726 | Nonlinear functional analysis | 7 | 32 | 774 | 1,429 |
| 726 | Cognitive neuroscience | 2 | 32 | 1,047 | 1,339 |
| 726 | Securities | 3 | 32 | 333 | 662 |
| 730 | Risk Management | 3 | 31 | 660 | 1,058 |
| 730 | Feminist Economics | 1 | 31 | 181 | 226 |
| 730 | symbiosis | 2 | 31 | 190 | 290 |
| 730 | Viticulture | 1 | 31 | 228 | 202 |
| 730 | Enzyme inhibitors | 3 | 31 | 393 | 751 |
| 730 | Feminism | 1 | 31 | 1,006 | 726 |
| 730 | Wetland ecology | 3 | 31 | 460 | 731 |
| 730 | Nutrigenomics | 1 | 31 | 231 | 275 |
| 738 | Environmental Ethics | 4 | 30 | 101 | 198 |
| 738 | Alternative Medicine | 1 | 30 | 2,330 | 2,306 |
| 738 | complementary therapies | 1 | 30 | 2,591 | 2,441 |
| 738 | Cosmochemistry | 2 | 30 | 998 | 1,303 |
| 738 | fishing industry | 3 | 30 | 110 | 196 |
| 738 | Vegetation | 3 | 30 | 91 | 117 |
| 738 | freshwater biology | 2 | 30 | 1,123 | 1,354 |
| 738 | plant oils | 1 | 30 | 448 | 422 |
| 746 | Behavioral research | 1 | 29 | 1,189 | 904 |
| 746 | Electrophysiology | 1 | 29 | 1,260 | 1,113 |
| 746 | Allergy | 2 | 29 | 1,023 | 1,365 |
| 746 | natural gas | 1 | 29 | 630 | 681 |
| 746 | Cognition | 1 | 29 | 2,244 | 2,076 |
| 751 | Petroleum Engineering | 2 | 28 | 816 | 1,007 |
| 751 | Production Planning | 1 | 28 | 556 | 656 |
| 751 | poverty | 1 | 28 | 804 | 761 |
| 751 | healthcare disparities | 1 | 28 | 834 | 828 |
| 751 | Production Control | 1 | 28 | 537 | 652 |
| 751 | urban health | 1 | 28 | 459 | 508 |
| 751 | Reproductive toxicology | 1 | 28 | 715 | 802 |
| 751 | isomerism | 1 | 28 | 632 | 529 |
| 751 | particles | 1 | 28 | 1,669 | 1,571 |
| 751 | Social work | 5 | 28 | 1,016 | 1,653 |
| 751 | Chirality | 1 | 28 | 632 | 529 |
| 762 | Public Policy | 3 | 27 | 1,654 | 2,475 |
| 762 | Child | 2 | 27 | 2,321 | 2,576 |
| 762 | Ichthyology | 3 | 27 | 489 | 607 |
| 762 | Chemical processes | 3 | 27 | 584 | 891 |
| 762 | Microwaves | 2 | 27 | 1,436 | 1,430 |
| 762 | Fish | 3 | 27 | 381 | 528 |
| 768 | Computer Architecture | 2 | 26 | 683 | 686 |
| 768 | Computer-Aided Design | 2 | 26 | 1,457 | 1,719 |
| 768 | Risk assessment | 2 | 26 | 825 | 1,060 |
| 768 | ecological risk assessment | 2 | 26 | 345 | 560 |
| 768 | Quantum Optics | 1 | 26 | 1,283 | 1,126 |
| 768 | Developmental Disabilities | 1 | 26 | 1,383 | 1,508 |
| 768 | landscapes | 1 | 26 | 409 | 354 |
| 768 | Health Risk Assessment | 2 | 26 | 607 | 837 |
| 768 | Laser Spectroscopy | 1 | 26 | 1,221 | 1,085 |
| 768 | Forest genetics | 3 | 26 | 265 | 441 |
| 768 | natural disasters | 3 | 26 | 1,325 | 2,087 |
| 779 | Public Administration | 3 | 25 | 1,352 | 1,668 |
| 779 | monoclonal antibodies | 2 | 25 | 329 | 421 |
| 779 | Travel | 3 | 25 | 749 | 1,217 |
| 779 | sustainability | 2 | 25 | 1,107 | 1,620 |
| 779 | Financial Institutions | 1 | 25 | 742 | 695 |
| 779 | Jurisprudence | 1 | 25 | 1,378 | 1,162 |
| 779 | Geospatial data | 1 | 25 | 75 | 112 |
| 779 | stocks | 2 | 25 | 193 | 454 |
| 787 | Artificial Organs | 1 | 24 | 852 | 777 |
| 787 | Wetland conservation | 2 | 24 | 418 | 642 |
| 787 | chromatin | 1 | 24 | 270 | 373 |
| 787 | health services | 1 | 24 | 1,631 | 1,562 |
| 787 | Wetlands | 2 | 24 | 431 | 643 |
| 792 | Political Geography | 1 | 23 | 506 | 531 |
| 792 | Industrial Safety | 1 | 23 | 1,887 | 1,778 |
| 792 | Endocrine glands | 1 | 23 | 436 | 630 |
| 792 | Entrepreneurship | 2 | 23 | 1,253 | 1,824 |
| 796 | Geotechnical Engineering | 2 | 22 | 574 | 736 |
| 796 | Software Engineering | 3 | 22 | 1,021 | 1,384 |
| 796 | Emergency Medical Services | 1 | 22 | 1,059 | 1,026 |
| 796 | Neuropsychology | 2 | 22 | 2,284 | 2,855 |
| 796 | Systems Analysis | 2 | 22 | 1,431 | 1,759 |
| 796 | emergency management | 1 | 22 | 1,199 | 1,286 |
| 796 | Antiviral agents | 1 | 22 | 426 | 515 |
| 796 | Ornithology | 2 | 22 | 1,083 | 1,188 |
| 796 | hazard mitigation | 1 | 22 | 1,646 | 1,754 |
| 796 | Mortgages | 1 | 22 | 379 | 401 |
| 796 | Radio waves | 3 | 22 | 820 | 1,231 |
| 796 | Zoonoses | 1 | 22 | 571 | 672 |
| 808 | Geographic information systems | 5 | 21 | 857 | 1,659 |
| 808 | Operator theory | 4 | 21 | 369 | 521 |
| 808 | Wildlife conservation | 1 | 21 | 1,560 | 1,780 |
| 808 | Lipid metabolism | 1 | 21 | 680 | 845 |
| 808 | Smoking | 1 | 21 | 1,058 | 1,237 |
| 808 | Substance Abuse | 1 | 21 | 1,870 | 1,874 |
| 808 | Intelligent Control Systems | 4 | 21 | 1,066 | 1,526 |
| 808 | Solitons | 4 | 21 | 1,073 | 1,849 |
| 808 | Fractals | 4 | 21 | 1,080 | 1,852 |
| 808 | Chaos | 4 | 21 | 1,073 | 1,849 |
| 808 | breastfeeding | 1 | 21 | 852 | 892 |
| 808 | Small Business | 2 | 21 | 888 | 1,448 |
| 808 | Lipid | 1 | 21 | 682 | 846 |
| 808 | Microstructure | 3 | 21 | 964 | 1,342 |
| 808 | Climate | 2 | 21 | 738 | 1,215 |
| 808 | carbon monoxide | 1 | 21 | 674 | 928 |
| 824 | Neurochemistry | 3 | 20 | 1,916 | 2,874 |
| 824 | Chemotherapy | 1 | 20 | 1,438 | 1,553 |
| 824 | Thrombosis | 1 | 20 | 1,215 | 1,360 |
| 824 | greenhouse effect | 1 | 20 | 138 | 217 |
| 824 | Oncogenes | 1 | 20 | 1,168 | 1,515 |
| 824 | Freeze-Drying | 1 | 20 | 673 | 740 |
| 824 | Interferons | 2 | 20 | 334 | 525 |
| 824 | Hypothermia | 1 | 20 | 673 | 740 |
| 824 | Freeze Drying | 1 | 20 | 673 | 740 |
| 824 | vascular diseases | 1 | 20 | 932 | 1,154 |
| 824 | Carbon dioxide | 1 | 20 | 138 | 217 |
| 824 | Tunneling | 1 | 20 | 536 | 696 |
| 824 | drug therapy | 1 | 20 | 2,154 | 2,324 |
| 824 | underground construction | 1 | 20 | 536 | 696 |
| 824 | Scandinavia | 4 | 20 | 498 | 962 |
| 824 | Cytokine | 2 | 20 | 467 | 817 |
| 840 | Bryology | 2 | 19 | 256 | 308 |
| 840 | Dietetics | 1 | 19 | 897 | 933 |
| 840 | Applied Linguistics | 3 | 19 | 636 | 882 |
| 840 | mosses | 2 | 19 | 156 | 194 |
| 840 | liverworts | 2 | 19 | 156 | 194 |
| 840 | packaging | 1 | 19 | 261 | 324 |
| 846 | Atmospheric Physics | 5 | 18 | 1,133 | 2,168 |
| 846 | Metallurgy | 1 | 18 | 2,746 | 2,591 |
| 846 | technology transfer | 1 | 18 | 563 | 676 |
| 846 | sustainable forestry | 1 | 18 | 259 | 232 |
| 846 | Ecological disturbances | 2 | 18 | 35 | 154 |
| 846 | Heterocyclic compounds | 2 | 18 | 1,207 | 1,397 |
| 846 | Caves | 1 | 18 | 15 | 9 |
| 846 | Environmental disasters | 2 | 18 | 35 | 154 |
| 854 | Hematology | 1 | 17 | 2,107 | 2,229 |
| 854 | Geriatric Oncology | 1 | 17 | 815 | 1,026 |
| 854 | gene therapy | 1 | 17 | 1,236 | 1,496 |
| 854 | mass transfer | 2 | 17 | 1,886 | 2,437 |
| 854 | Child psychology | 1 | 17 | 1,926 | 2,122 |
| 854 | Genetic therapy | 1 | 17 | 1,239 | 1,488 |
| 860 | Political Science | 1 | 16 | 2,320 | 1,913 |
| 860 | Materials Engineering | 1 | 16 | 1,320 | 1,322 |
| 860 | Ergonomics | 1 | 16 | 1,385 | 1,468 |
| 860 | Pharmacogenetics | 2 | 16 | 976 | 1,448 |
| 860 | Aquatic animals | 2 | 16 | 262 | 474 |
| 860 | Catalysts | 1 | 16 | 1,137 | 1,270 |
| 866 | Dynamics | 3 | 15 | 1,676 | 2,263 |
| 866 | Diagnostic Imaging | 5 | 15 | 1,317 | 2,448 |
| 866 | Quantum Gravity | 2 | 15 | 1,995 | 2,324 |
| 866 | Brain | 1 | 15 | 2,859 | 3,225 |
| 866 | Food preferences | 1 | 15 | 679 | 875 |
| 866 | Yeast | 1 | 15 | 694 | 884 |
| 866 | diseases | 1 | 15 | 565 | 761 |
| 866 | Disease | 1 | 15 | 549 | 770 |
| 874 | Organizational learning | 2 | 14 | 647 | 1,113 |
| 874 | Natural resources | 3 | 14 | 724 | 1,424 |
| 874 | Geodesy | 2 | 14 | 968 | 1,452 |
| 874 | Knowledge management | 2 | 14 | 595 | 1,033 |
| 874 | Synthetic biology | 1 | 14 | 524 | 682 |
| 874 | Social policy | 3 | 14 | 1,039 | 1,748 |
| 874 | aquatic insects | 6 | 14 | 30 | 147 |
| 874 | Nonprofit organizations | 2 | 14 | 458 | 806 |
| 874 | Cell metabolism | 1 | 14 | 1,017 | 1,331 |
| 883 | Climatology | 4 | 13 | 1,485 | 2,733 |
| 883 | Higher Education | 1 | 13 | 1,115 | 1,195 |
| 883 | Structural design | 1 | 13 | 1,329 | 1,499 |
| 883 | Serology | 2 | 13 | 627 | 1,111 |
| 883 | Functional Genomics | 2 | 13 | 314 | 693 |
| 883 | Freshwater invertebrates | 2 | 13 | 282 | 595 |
| 883 | Smart Materials | 1 | 13 | 1,515 | 1,666 |
| 883 | bioclimatology | 4 | 13 | 833 | 1,912 |
| 883 | Neuroplasticity | 1 | 13 | 513 | 711 |
| 883 | Adolescent | 5 | 13 | 1,513 | 3,015 |
| 883 | Radio | 2 | 13 | 1,531 | 2,047 |
| 883 | human development | 1 | 13 | 1,245 | 1,556 |
| 883 | tests | 1 | 13 | 374 | 561 |
| 896 | Freshwater Ecology | 1 | 12 | 584 | 663 |
| 896 | Epigenetics | 1 | 12 | 454 | 597 |
| 896 | Organizational change | 1 | 12 | 1,274 | 1,524 |
| 896 | Cognitive Radio Networks | 1 | 12 | 381 | 491 |
| 896 | local government | 1 | 12 | 621 | 819 |
| 896 | Epigenomics | 1 | 12 | 445 | 590 |
| 896 | Child welfare | 5 | 12 | 841 | 1,921 |
| 896 | Fluorescence spectroscopy | 1 | 12 | 397 | 501 |
| 896 | air quality | 2 | 12 | 334 | 808 |
| 896 | international trade | 1 | 12 | 1,284 | 1,363 |
| 896 | Optoelectronic devices | 4 | 12 | 862 | 1,534 |
| 896 | organizational effectiveness | 1 | 12 | 869 | 1,018 |
| 896 | aromatic plants | 2 | 12 | 321 | 549 |
| 896 | Cheminformatics | 1 | 12 | 594 | 818 |
| 910 | Optical Communications | 3 | 11 | 819 | 1,370 |
| 910 | Boundary Value Problems | 6 | 11 | 524 | 1,305 |
| 910 | Crystallization | 5 | 11 | 378 | 826 |
| 910 | Ecohydrology | 1 | 11 | 719 | 909 |
| 910 | Rheology | 2 | 11 | 701 | 1,111 |
| 910 | DNA methylation | 1 | 11 | 481 | 709 |
| 910 | Korea | 4 | 11 | 271 | 699 |
| 910 | X-ray crystallography | 5 | 11 | 418 | 852 |
| 910 | DNA repair | 1 | 11 | 464 | 665 |
| 910 | probabilities | 2 | 11 | 1,484 | 1,658 |
| 910 | India | 2 | 11 | 1,916 | 2,324 |
| 910 | language | 1 | 11 | 1,274 | 1,407 |
| 922 | Anatomy | 2 | 10 | 2,028 | 2,728 |
| 922 | Differential Equations | 3 | 10 | 1,074 | 1,534 |
| 922 | Pesticide residues | 1 | 10 | 167 | 332 |
| 922 | Beetles | 4 | 10 | 105 | 202 |
| 922 | Trace elements | 1 | 10 | 535 | 869 |
| 927 | Photography | 1 | 9 | 1,556 | 1,040 |
| 927 | Astrophysics | 1 | 9 | 3,352 | 3,641 |
| 927 | Combustion | 2 | 9 | 1,380 | 2,079 |
| 927 | Electronic Packaging | 1 | 9 | 372 | 471 |
| 927 | Combinatorial optimization | 2 | 9 | 695 | 1,002 |
| 927 | Antioxidants | 1 | 9 | 1,076 | 1,516 |
| 927 | Enteral nutrition | 1 | 9 | 1,117 | 1,512 |
| 927 | structural stability | 1 | 9 | 518 | 786 |
| 927 | Electromagnetic waves | 1 | 9 | 599 | 717 |
| 927 | Parenteral nutrition | 1 | 9 | 1,255 | 1,658 |
| 927 | Geodynamics | 3 | 9 | 832 | 1,431 |
| 927 | Spectroscopy | 1 | 9 | 382 | 327 |
| 927 | Flood control | 2 | 9 | 343 | 794 |
| 927 | France | 1 | 9 | 742 | 683 |
| 927 | agricultural productivity | 2 | 9 | 99 | 280 |
| 927 | Fishery resources | 1 | 9 | 935 | 1,262 |
| 927 | international cooperation | 1 | 9 | 1,060 | 1,316 |
| 944 | Philosophy | 1 | 8 | 2,074 | 1,587 |
| 944 | Cognitive Psychology | 1 | 8 | 759 | 866 |
| 944 | Database Management | 1 | 8 | 1,134 | 1,420 |
| 944 | Phenomenology | 1 | 8 | 485 | 404 |
| 944 | Philosophy of Mind | 1 | 8 | 511 | 591 |
| 944 | Language Acquisition | 1 | 8 | 613 | 753 |
| 944 | Histochemistry | 1 | 8 | 1,461 | 1,787 |
| 944 | Statistical Mechanics | 2 | 8 | 782 | 1,095 |
| 944 | Expert Systems | 1 | 8 | 539 | 724 |
| 944 | Wireless Communication | 1 | 8 | 855 | 1,069 |
| 944 | Heritage Tourism | 1 | 8 | 289 | 549 |
| 944 | cultural tourism | 1 | 8 | 288 | 549 |
| 944 | Visual Perception | 1 | 8 | 1,840 | 2,208 |
| 944 | Central Asia | 1 | 8 | 425 | 658 |
| 944 | Memory | 1 | 8 | 1,998 | 2,484 |
| 944 | Attention | 1 | 8 | 1,925 | 2,405 |
| 944 | Perception | 1 | 8 | 2,042 | 2,418 |
| 944 | Cerebral cortex | 1 | 8 | 1,172 | 1,579 |
| 962 | Biopharmaceutics | 1 | 7 | 1,498 | 1,994 |
| 962 | Optoelectronics | 3 | 7 | 529 | 1,011 |
| 962 | Psychosomatic Medicine | 1 | 7 | 1,104 | 1,541 |
| 962 | Pharmacokinetics | 1 | 7 | 1,249 | 1,751 |
| 962 | Food texture | 1 | 7 | 331 | 556 |
| 962 | Corporate governance | 1 | 7 | 1,105 | 1,544 |
| 962 | Fiber Optics | 1 | 7 | 1,324 | 1,626 |
| 962 | Eastern Europe | 2 | 7 | 1,158 | 1,596 |
| 962 | Volcanoes | 1 | 7 | 466 | 650 |
| 962 | Monomers | 1 | 7 | 162 | 307 |
| 962 | medical education | 1 | 7 | 2,382 | 2,889 |
| 962 | biological agents | 2 | 7 | 898 | 1,179 |
| 962 | biomedicine | 1 | 7 | 893 | 1,357 |
| 962 | Growth | 1 | 7 | 1,348 | 1,825 |
| 962 | Birds | 1 | 7 | 1,546 | 1,738 |
| 962 | wetland management | 1 | 7 | 376 | 629 |
| 962 | Quantum theory | 1 | 7 | 1,444 | 1,658 |
| 979 | Landscape Architecture | 1 | 6 | 362 | 399 |
| 979 | Algebra | 4 | 6 | 1,320 | 1,908 |
| 979 | Social Psychology | 2 | 6 | 2,420 | 3,588 |
| 979 | Antenna Arrays | 1 | 6 | 838 | 1,109 |
| 979 | Marine invertebrates | 1 | 6 | 457 | 617 |
| 979 | Calculus of Variations | 2 | 6 | 677 | 941 |
| 979 | Adaptive control systems | 2 | 6 | 769 | 1,322 |
| 979 | families | 2 | 6 | 1,058 | 1,714 |
| 979 | Papermaking | 3 | 6 | 79 | 186 |
| 979 | Stress | 1 | 6 | 570 | 935 |
| 989 | Radiology | 1 | 5 | 1,738 | 2,129 |
| 989 | Graph Theory | 2 | 5 | 932 | 1,276 |
| 989 | Discourse Analysis | 1 | 5 | 697 | 964 |
| 989 | Probability | 1 | 5 | 957 | 1,310 |
| 989 | Discrete Mathematics | 2 | 5 | 506 | 708 |
| 989 | Coastal zone management | 1 | 5 | 1,119 | 1,683 |
| 989 | Research Design | 1 | 5 | 1,636 | 2,284 |
| 989 | Transnational corporations | 2 | 5 | 516 | 1,268 |
| 989 | Financial management | 1 | 5 | 844 | 1,314 |
| 989 | Magnetic Resonance Spectroscopy | 2 | 5 | 1,218 | 1,810 |
| 989 | Protein folding | 1 | 5 | 164 | 303 |
| 989 | Risk | 1 | 5 | 890 | 1,295 |