| 1 | Biology | 415 | 51.5K | 585 | 410 |
| 2 | Science | 214 | 43.7K | 971 | 459 |
| 3 | Physics | 734 | 41.0K | 515 | 565 |
| 4 | Cytology | 377 | 38.1K | 235 | 167 |
| 5 | Molecular Biology | 457 | 37.5K | 513 | 345 |
| 6 | Biochemistry | 700 | 34.9K | 535 | 417 |
| 7 | Chemistry | 738 | 34.4K | 531 | 524 |
| 8 | Cell Biology | 185 | 30.9K | 376 | 193 |
| 9 | Microbiology | 481 | 30.2K | 321 | 282 |
| 10 | plant molecular biology | 318 | 28.0K | 18 | 24 |
| 11 | Natural history | 36 | 26.8K | 779 | 363 |
| 12 | Plant cells | 184 | 26.5K | 46 | 36 |
| 13 | Botany | 238 | 18.8K | 319 | 187 |
| 14 | Plants | 171 | 17.6K | 77 | 47 |
| 15 | Plant physiology | 236 | 16.8K | 47 | 45 |
| 16 | Plant genetic engineering | 306 | 13.3K | 4 | 6 |
| 17 | Developmental Biology | 135 | 12.8K | 172 | 122 |
| 18 | Biotechnology | 330 | 11.8K | 281 | 427 |
| 19 | Plant Genetics | 176 | 11.4K | 10 | 12 |
| 20 | Virology | 17 | 9.6K | 1020 | 316 |
| 21 | Embryology | 92 | 9.3K | 175 | 103 |
| 22 | Growth | 81 | 8.9K | 129 | 106 |
| 23 | Genes | 135 | 8.6K | 17 | 6 |
| 24 | Cell differentiation | 65 | 8.6K | 235 | 161 |
| 25 | Anatomy | 60 | 8.0K | 312 | 111 |
| 26 | Bioengineering | 237 | 7.3K | 220 | 406 |
| 27 | Technology | 483 | 6.4K | 58 | 204 |
| 28 | Signal Transduction | 125 | 6.1K | 38 | 55 |
| 29 | Neurology | 72 | 5.9K | 965 | 705 |
| 30 | Polymers | 207 | 5.8K | 467 | 471 |
| 31 | Cytogenetics | 86 | 5.5K | 116 | 144 |
| 32 | Biomedical Engineering | 174 | 5.4K | 445 | 476 |
| 33 | Molecular Genetics | 95 | 5.3K | 161 | 160 |
| 34 | Biophysics | 179 | 5.3K | 690 | 719 |
| 35 | polymerization | 176 | 5.3K | 416 | 411 |
| 36 | Histology | 92 | 5.1K | 166 | 114 |
| 37 | Immunity | 14 | 5.1K | 690 | 302 |
| 38 | Biomechanics | 83 | 4.7K | 105 | 92 |
| 39 | Gene expression | 81 | 4.7K | 13 | 10 |
| 39 | Cell division | 81 | 4.7K | 13 | 10 |
| 41 | genome | 40 | 4.6K | 250 | 192 |
| 42 | Genetics | 84 | 4.6K | 515 | 518 |
| 43 | Genomics | 63 | 4.5K | 489 | 277 |
| 44 | Medicine | 113 | 4.4K | 1492 | 1340 |
| 45 | Molecular Microbiology | 34 | 4.3K | 182 | 112 |
| 46 | Japan | 273 | 4.2K | 51 | 42 |
| 47 | Immunology | 17 | 4.0K | 1164 | 510 |
| 48 | Materials | 214 | 3.5K | 702 | 1079 |
| 49 | DNS | 27 | 3.4K | 31 | 2 |
| 50 | Research | 95 | 3.4K | 1433 | 1251 |
| 51 | Immunotherapy | 6 | 3.2K | 1081 | 235 |
| 52 | Plant Ecology | 27 | 2.8K | 516 | 265 |
| 53 | Immune system | 2 | 2.8K | 925 | 224 |
| 54 | Nanotechnology | 86 | 2.7K | 944 | 1061 |
| 55 | Catalysis | 92 | 2.5K | 725 | 899 |
| 56 | Mass Spectrometry | 6 | 2.5K | 769 | 79 |
| 57 | Software Engineering | 40 | 2.5K | 142 | 88 |
| 58 | Optical materials | 112 | 2.4K | 248 | 494 |
| 59 | Industrial Microbiology | 45 | 2.4K | 277 | 224 |
| 60 | Speech Perception | 24 | 2.4K | 52 | 24 |
| 60 | auditory perception | 24 | 2.4K | 64 | 27 |
| 62 | Solid State Physics | 119 | 2.4K | 688 | 755 |
| 63 | Organic Chemistry | 122 | 2.3K | 335 | 545 |
| 64 | Pharmacology | 27 | 2.3K | 1646 | 979 |
| 65 | Medical Laboratory Science | 44 | 2.2K | 345 | 331 |
| 66 | Ecology | 40 | 2.1K | 1717 | 1534 |
| 67 | Biochemical Engineering | 25 | 2.1K | 1140 | 893 |
| 68 | Bioorganic chemistry | 52 | 2.1K | 563 | 477 |
| 69 | Genetic engineering | 41 | 2.1K | 375 | 335 |
| 70 | Pharmaceutical Chemistry | 49 | 2.1K | 844 | 697 |
| 71 | Biocompatible Materials | 59 | 2.0K | 843 | 985 |
| 72 | Agricultural Chemistry | 93 | 2.0K | 205 | 335 |
| 73 | Computational Biology | 39 | 1.9K | 515 | 436 |
| 74 | Microbial Ecology | 39 | 1.9K | 498 | 556 |
| 75 | Environment | 37 | 1.8K | 1298 | 1445 |
| 76 | nucleic acids | 34 | 1.8K | 428 | 463 |
| 77 | Electronics | 178 | 1.8K | 271 | 591 |
| 78 | gene mapping | 25 | 1.7K | 522 | 382 |
| 79 | Image Processing | 43 | 1.7K | 465 | 436 |
| 80 | Sound | 23 | 1.7K | 270 | 102 |
| 81 | Plant Biotechnology | 127 | 1.7K | 10 | 67 |
| 82 | Robotics | 97 | 1.7K | 112 | 240 |
| 83 | Bioinformatics | 32 | 1.7K | 482 | 403 |
| 84 | Computer Vision | 44 | 1.7K | 145 | 224 |
| 85 | Information Technology | 153 | 1.6K | 38 | 364 |
| 86 | Nervous system | 42 | 1.6K | 543 | 564 |
| 87 | Genetic regulation | 15 | 1.5K | 370 | 237 |
| 88 | Neurons | 9 | 1.5K | 296 | 330 |
| 88 | Condensed Matter | 69 | 1.5K | 782 | 846 |
| 90 | language | 10 | 1.4K | 385 | 124 |
| 91 | Computer Graphics | 67 | 1.4K | 205 | 276 |
| 92 | proteins | 42 | 1.4K | 387 | 391 |
| 93 | Colloids | 68 | 1.3K | 799 | 1126 |
| 94 | Physical organic chemistry | 29 | 1.3K | 313 | 148 |
| 95 | Molecular cloning | 28 | 1.3K | 282 | 191 |
| 95 | Genetic recombination | 28 | 1.3K | 272 | 187 |
| 95 | Recombinant DNA | 28 | 1.3K | 325 | 213 |
| 98 | cell physiology | 16 | 1.3K | 552 | 415 |
| 99 | Surface Chemistry | 84 | 1.3K | 696 | 1111 |
| 100 | Chromosome mapping | 22 | 1.2K | 511 | 399 |
| 101 | Allergy | 2 | 1.2K | 975 | 397 |
| 102 | Materials Science | 73 | 1.2K | 909 | 1309 |
| 103 | Nanostructured Materials | 49 | 1.2K | 777 | 938 |
| 104 | Solar Energy | 19 | 1.2K | 540 | 363 |
| 105 | Molecular structure | 13 | 1.2K | 1154 | 500 |
| 106 | internet | 8 | 1.1K | 920 | 305 |
| 107 | Neural circuitry | 44 | 1.1K | 293 | 431 |
| 108 | solar cells | 17 | 1.1K | 232 | 168 |
| 109 | solar power | 15 | 1.1K | 221 | 143 |
| 110 | Analytical Chemistry | 48 | 1.1K | 1200 | 1336 |
| 111 | Luminescence | 71 | 1.1K | 54 | 90 |
| 112 | Radiation | 60 | 1.1K | 271 | 335 |
| 113 | Host-parasite interactions | 6 | 1.1K | 722 | 436 |
| 114 | Organometallic compounds | 23 | 1.1K | 399 | 256 |
| 115 | miniaturization | 24 | 1.0K | 544 | 615 |
| 116 | Artificial Intelligence | 64 | 1.0K | 678 | 1066 |
| 117 | Neurochemistry | 22 | 992 | 827 | 715 |
| 118 | Stem cells | 9 | 986 | 706 | 393 |
| 119 | Human genetics | 4 | 981 | 1210 | 1034 |
| 120 | Speech | 14 | 963 | 367 | 215 |
| 121 | Optics | 79 | 940 | 871 | 1064 |
| 122 | Photochemistry | 40 | 932 | 260 | 357 |
| 123 | mycoses | 5 | 929 | 517 | 265 |
| 123 | Bacterial infections | 5 | 929 | 518 | 278 |
| 125 | Developmental Genetics | 8 | 924 | 258 | 206 |
| 126 | Bacteriology | 26 | 890 | 533 | 653 |
| 127 | protein | 25 | 873 | 296 | 296 |
| 128 | Solid State Chemistry | 39 | 867 | 678 | 640 |
| 129 | Gene expression regulation | 8 | 839 | 483 | 259 |
| 130 | Neurophysiology | 18 | 832 | 1084 | 991 |
| 131 | Radiology | 53 | 819 | 174 | 213 |
| 132 | Internet of Things | 5 | 816 | 834 | 308 |
| 133 | Metabolic diseases | 3 | 815 | 1599 | 800 |
| 134 | Neurobiology | 19 | 801 | 622 | 672 |
| 135 | Homeostasis | 1 | 799 | 583 | 348 |
| 135 | Cell metabolism | 1 | 799 | 983 | 363 |
| 137 | cosmic rays | 51 | 790 | 26 | 44 |
| 138 | actuators | 20 | 765 | 805 | 768 |
| 138 | transducers | 20 | 765 | 805 | 768 |
| 140 | Chemical industry | 73 | 749 | 101 | 192 |
| 141 | Telecommunication | 117 | 723 | 251 | 810 |
| 141 | enzymes | 28 | 723 | 359 | 451 |
| 143 | Signal Processing | 28 | 719 | 827 | 896 |
| 144 | Photobiology | 28 | 715 | 206 | 280 |
| 145 | cloning | 7 | 701 | 344 | 256 |
| 146 | Communication | 12 | 694 | 989 | 657 |
| 147 | nanoscience | 18 | 692 | 1178 | 1157 |
| 148 | Oral communication | 11 | 689 | 137 | 54 |
| 149 | Physiology | 12 | 684 | 1913 | 1439 |
| 150 | visualization | 34 | 671 | 327 | 229 |
| 151 | Clinical Chemistry | 12 | 630 | 1189 | 962 |
| 152 | Molecular evolution | 7 | 629 | 848 | 572 |
| 153 | United Kingdom | 8 | 627 | 808 | 534 |
| 154 | viral genetics | 3 | 614 | 245 | 206 |
| 155 | Metabolism | 13 | 609 | 1038 | 1011 |
| 156 | Magnetic Materials | 29 | 601 | 390 | 484 |
| 157 | Combinatorial chemistry | 13 | 594 | 249 | 280 |
| 158 | Oncogenes | 12 | 578 | 471 | 579 |
| 159 | Yeast | 27 | 560 | 43 | 121 |
| 160 | Bioinorganic chemistry | 20 | 553 | 508 | 489 |
| 161 | Educational Technology | 3 | 542 | 1652 | 466 |
| 162 | Medical Physics | 13 | 539 | 687 | 603 |
| 163 | Proteome | 15 | 513 | 409 | 470 |
| 164 | Chemical Engineering | 43 | 509 | 1352 | 2121 |
| 165 | Brain | 22 | 499 | 950 | 1097 |
| 166 | Statistical physics | 20 | 494 | 1424 | 1336 |
| 167 | Engineering | 11 | 489 | 2314 | 1416 |
| 168 | Diagnostic Imaging | 14 | 479 | 724 | 630 |
| 169 | Physical Chemistry | 19 | 470 | 841 | 914 |
| 170 | cell interaction | 8 | 469 | 553 | 437 |
| 171 | Plant diseases | 13 | 461 | 896 | 706 |
| 172 | Microelectronics | 15 | 460 | 749 | 813 |
| 173 | Photonics | 29 | 455 | 581 | 902 |
| 173 | plant communities | 7 | 455 | 668 | 591 |
| 175 | Evolution | 7 | 454 | 1104 | 836 |
| 176 | Psychophysiology | 7 | 448 | 1637 | 1272 |
| 177 | Cerebral cortex | 7 | 439 | 551 | 449 |
| 178 | Computer Science | 50 | 419 | 213 | 522 |
| 179 | Immunopharmacology | 4 | 414 | 859 | 368 |
| 179 | cytokines | 4 | 414 | 946 | 521 |
| 181 | Microbial Genetics | 6 | 405 | 191 | 146 |
| 181 | phytopathogenic bacteria | 6 | 405 | 140 | 139 |
| 183 | Environmental Chemistry | 2 | 403 | 2274 | 1107 |
| 184 | Spectrum analysis | 27 | 398 | 1575 | 1903 |
| 185 | Transgenic plants | 10 | 396 | 133 | 140 |
| 185 | computer networks | 32 | 396 | 653 | 1082 |
| 187 | DNA polymerases | 1 | 386 | 550 | 330 |
| 188 | Pharmaceutical Technology | 7 | 378 | 977 | 700 |
| 188 | Cancer | 12 | 378 | 1280 | 1409 |
| 190 | Chemical Ecology | 1 | 373 | 808 | 229 |
| 190 | pheromones | 1 | 373 | 761 | 211 |
| 192 | catalytic activity | 6 | 372 | 454 | 304 |
| 193 | Systems Biology | 15 | 366 | 561 | 613 |
| 194 | Medical genetics | 5 | 363 | 1378 | 1186 |
| 195 | Plant tissue culture | 18 | 361 | 154 | 254 |
| 195 | Plant cell culture | 17 | 361 | 137 | 250 |
| 197 | transgenic organisms | 7 | 355 | 81 | 57 |
| 197 | transgenic animals | 7 | 355 | 75 | 53 |
| 199 | Electrochemistry | 87 | 348 | 783 | 1721 |
| 200 | Endocrinology | 12 | 321 | 1234 | 1417 |
| 201 | Wireless Communication Systems | 22 | 319 | 864 | 1071 |
| 202 | Multimedia Systems | 15 | 314 | 725 | 675 |
| 203 | Quantum electronics | 15 | 311 | 671 | 629 |
| 204 | Organometallic chemistry | 13 | 308 | 1032 | 848 |
| 205 | Ceramic materials | 12 | 302 | 607 | 586 |
| 206 | Energy Policy | 1 | 300 | 3317 | 1789 |
| 207 | Behavior | 7 | 295 | 1882 | 1838 |
| 208 | Psychiatry | 6 | 288 | 2448 | 1887 |
| 209 | Nanoparticles | 10 | 287 | 987 | 1034 |
| 210 | Oxidation-reduction | 5 | 285 | 569 | 622 |
| 211 | Hematopoietic stem cell transplantation | 1 | 283 | 634 | 220 |
| 212 | Reproduction | 11 | 281 | 1077 | 1043 |
| 213 | Crystal growth | 14 | 279 | 380 | 493 |
| 214 | Neuropsychology | 5 | 278 | 1579 | 1146 |
| 215 | Electromagnetic compatibility | 20 | 277 | 78 | 116 |
| 216 | Pediatric Neurology | 2 | 272 | 814 | 640 |
| 217 | lasers | 16 | 268 | 915 | 958 |
| 218 | Fermentation | 5 | 263 | 143 | 69 |
| 219 | Composite Materials | 8 | 262 | 1622 | 1687 |
| 220 | Antioxidants | 4 | 260 | 607 | 560 |
| 221 | Developmental Neurobiology | 5 | 255 | 383 | 199 |
| 222 | Automation | 9 | 254 | 1313 | 1333 |
| 223 | multimedia | 7 | 253 | 277 | 286 |
| 223 | Interactive multimedia | 7 | 253 | 313 | 303 |
| 223 | biological evolution | 3 | 253 | 1776 | 1334 |
| 226 | Semiconductors | 19 | 251 | 762 | 931 |
| 227 | Human-Computer Interaction | 20 | 250 | 413 | 814 |
| 228 | food technology | 3 | 249 | 2318 | 1526 |
| 229 | viruses | 2 | 248 | 1266 | 836 |
| 230 | Diabetes mellitus | 3 | 246 | 1502 | 1117 |
| 230 | Diabetes | 3 | 246 | 1547 | 1133 |
| 232 | Microbial Biotechnology | 6 | 245 | 620 | 489 |
| 233 | Breeding | 13 | 242 | 491 | 642 |
| 234 | Crystallography | 39 | 240 | 361 | 524 |
| 235 | X-ray crystallography | 36 | 237 | 66 | 189 |
| 236 | Nonlinear Dynamics | 11 | 232 | 1084 | 1092 |
| 237 | Hematology | 4 | 228 | 1289 | 1092 |
| 237 | biopolymers | 7 | 228 | 727 | 690 |
| 239 | Nuclear Physics | 10 | 226 | 2367 | 2171 |
| 239 | software | 17 | 226 | 283 | 693 |
| 241 | Biological Systems | 4 | 223 | 418 | 263 |
| 242 | Electrical Engineering | 44 | 221 | 811 | 1337 |
| 242 | Nuclear Engineering | 7 | 221 | 944 | 587 |
| 244 | Ceramics | 14 | 220 | 591 | 701 |
| 244 | Light | 13 | 220 | 378 | 745 |
| 246 | Meteorology | 3 | 212 | 1838 | 1416 |
| 247 | Ophthalmology | 5 | 207 | 1155 | 978 |
| 247 | Supramolecular chemistry | 9 | 207 | 81 | 34 |
| 249 | Chemical analysis | 4 | 206 | 942 | 713 |
| 250 | biological factors | 7 | 200 | 1226 | 1114 |
| 251 | Psychology | 7 | 199 | 3037 | 2484 |
| 252 | Telecommunication Systems | 17 | 193 | 557 | 812 |
| 253 | Computer-Aided Design | 15 | 191 | 435 | 685 |
| 253 | Cell death | 5 | 191 | 772 | 894 |
| 255 | Informatics | 12 | 188 | 327 | 518 |
| 256 | Toxicology | 14 | 185 | 2046 | 2788 |
| 257 | Systems Engineering | 8 | 181 | 1355 | 1315 |
| 258 | Plant breeding | 13 | 175 | 251 | 440 |
| 259 | Information Theory | 9 | 174 | 811 | 854 |
| 260 | Industrial Engineering | 5 | 173 | 1358 | 1213 |
| 261 | Bones | 3 | 172 | 650 | 610 |
| 262 | Biosensors | 8 | 171 | 740 | 1230 |
| 263 | Detectors | 14 | 170 | 623 | 962 |
| 264 | Cheminformatics | 12 | 169 | 45 | 295 |
| 265 | Analytical Biochemistry | 8 | 165 | 1016 | 1078 |
| 266 | pigments | 9 | 161 | 421 | 573 |
| 267 | Zeolites | 2 | 157 | 1108 | 816 |
| 268 | Pharmacy | 8 | 156 | 1195 | 1392 |
| 269 | Morphology | 1 | 155 | 1373 | 451 |
| 270 | Medical Microbiology | 2 | 153 | 1958 | 1580 |
| 271 | Genetic therapy | 3 | 152 | 831 | 751 |
| 272 | Control Theory | 14 | 150 | 823 | 1066 |
| 273 | Food Microbiology | 4 | 149 | 957 | 1083 |
| 274 | Synchrotron Radiation | 5 | 147 | 249 | 182 |
| 275 | Radiography | 3 | 143 | 658 | 702 |
| 275 | rehabilitation | 3 | 143 | 1901 | 1428 |
| 277 | Autoimmune diseases | 3 | 139 | 541 | 503 |
| 278 | Psychopharmacology | 2 | 137 | 1371 | 1082 |
| 279 | Functional Genomics | 4 | 136 | 187 | 254 |
| 280 | Biomolecules | 2 | 133 | 560 | 435 |
| 281 | Computational Linguistics | 15 | 132 | 76 | 184 |
| 282 | Surface properties | 11 | 131 | 493 | 1133 |
| 282 | Virulence | 1 | 131 | 1282 | 1017 |
| 282 | Membranes | 3 | 131 | 1482 | 1420 |
| 285 | Bioelectronics | 5 | 128 | 820 | 1276 |
| 286 | Public Health | 3 | 125 | 3950 | 3174 |
| 286 | Health Policy | 3 | 125 | 1805 | 1348 |
| 288 | Pathology | 4 | 121 | 1347 | 1372 |
| 289 | Nanostructures | 15 | 120 | 779 | 1649 |
| 289 | Glass | 3 | 120 | 1011 | 815 |
| 289 | pottery | 3 | 120 | 957 | 794 |
| 289 | Microwaves | 5 | 120 | 1020 | 820 |
| 293 | DNA repair | 3 | 116 | 254 | 246 |
| 294 | Radiobiology | 1 | 114 | 1416 | 879 |
| 295 | Photography | 42 | 111 | 290 | 307 |
| 296 | energy conservation | 1 | 109 | 2814 | 2040 |
| 297 | Extreme environments | 3 | 108 | 214 | 253 |
| 298 | Machine Learning | 11 | 106 | 103 | 284 |
| 298 | Integrated Circuits | 16 | 106 | 237 | 319 |
| 300 | China | 4 | 104 | 2301 | 2090 |
| 301 | Computer Engineering | 8 | 103 | 471 | 685 |
| 301 | System analysis | 10 | 103 | 1320 | 1853 |
| 303 | Surface-Active Agents | 9 | 97 | 552 | 1233 |
| 303 | nuclear magnetic resonance | 9 | 97 | 566 | 701 |
| 303 | East Asia | 6 | 97 | 365 | 321 |
| 306 | Mechanical Engineering | 2 | 95 | 2557 | 1623 |
| 306 | Soft Condensed Matter | 5 | 95 | 788 | 939 |
| 306 | machinery | 2 | 95 | 1006 | 625 |
| 309 | Pharmacogenetics | 2 | 94 | 940 | 789 |
| 309 | Therapeutics | 2 | 94 | 1490 | 1320 |
| 311 | optical devices | 5 | 93 | 332 | 367 |
| 312 | Perception | 5 | 91 | 1125 | 1311 |
| 313 | Cybernetics | 7 | 89 | 1023 | 1439 |
| 313 | Enzyme | 2 | 89 | 663 | 650 |
| 315 | Liquid Crystals | 12 | 88 | 410 | 505 |
| 315 | Cognitive Science | 18 | 88 | 500 | 1529 |
| 317 | Chromosomes | 3 | 86 | 837 | 906 |
| 318 | Fiber Optics | 6 | 83 | 643 | 805 |
| 318 | Leukemia | 1 | 83 | 944 | 772 |
| 320 | Intelligent Transportation Systems | 7 | 81 | 684 | 1159 |
| 321 | Memory | 4 | 80 | 1207 | 1416 |
| 322 | Crystallization | 16 | 79 | 121 | 328 |
| 322 | Visual Perception | 4 | 79 | 1111 | 1228 |
| 324 | natural products | 4 | 77 | 1557 | 1538 |
| 325 | Speech-Language Pathology | 4 | 76 | 220 | 260 |
| 325 | Linguistics | 4 | 76 | 1136 | 1004 |
| 325 | automatic speech recognition | 4 | 76 | 91 | 160 |
| 328 | Environmental Engineering | 2 | 75 | 3666 | 3251 |
| 328 | Mechatronics | 7 | 75 | 538 | 929 |
| 328 | Semantics | 2 | 75 | 293 | 167 |
| 328 | nuclear magnetic resonance spectroscopy | 8 | 75 | 433 | 572 |
| 332 | Optical Communications | 2 | 73 | 927 | 654 |
| 332 | Histochemistry | 3 | 73 | 947 | 892 |
| 332 | Animal Behavior | 6 | 73 | 1240 | 1839 |
| 332 | Attention | 3 | 73 | 1286 | 1309 |
| 332 | Information Science | 5 | 73 | 2000 | 2470 |
| 337 | Optoelectronic devices | 6 | 71 | 644 | 669 |
| 337 | Vaccines | 1 | 71 | 2035 | 1431 |
| 339 | Parallel Processing | 4 | 68 | 376 | 561 |
| 340 | Environmental Microbiology | 3 | 66 | 1248 | 1636 |
| 340 | Nitric oxide | 2 | 66 | 340 | 380 |
| 342 | Mathematical Physics | 1 | 65 | 3485 | 2160 |
| 342 | glycoproteins | 2 | 65 | 511 | 537 |
| 342 | Glycoconjugates | 2 | 65 | 511 | 537 |
| 342 | Vision | 1 | 65 | 921 | 727 |
| 342 | glycolipids | 2 | 65 | 511 | 537 |
| 347 | histological techniques | 3 | 64 | 598 | 769 |
| 347 | data protection | 4 | 64 | 464 | 502 |
| 349 | Psycholinguistics | 1 | 63 | 1321 | 997 |
| 350 | Information Systems | 5 | 61 | 1052 | 1508 |
| 350 | Environmental Health | 3 | 61 | 4130 | 4549 |
| 352 | Geophysics | 2 | 60 | 3108 | 2798 |
| 352 | Genetic translocation | 1 | 60 | 363 | 265 |
| 352 | plasmids | 1 | 60 | 363 | 265 |
| 355 | gene therapy | 1 | 58 | 1186 | 1037 |
| 355 | biological agents | 2 | 58 | 899 | 274 |
| 357 | Microprocessors | 4 | 57 | 497 | 587 |
| 358 | Metallurgy | 4 | 56 | 1814 | 1885 |
| 359 | Mobile Computing | 5 | 55 | 855 | 1119 |
| 360 | free radicals | 4 | 54 | 1041 | 1611 |
| 361 | Biomass Energy | 2 | 51 | 2556 | 2790 |
| 361 | biofuels | 2 | 51 | 316 | 610 |
| 363 | Autoantibodies | 1 | 50 | 735 | 716 |
| 363 | Autoimmunity | 1 | 50 | 886 | 884 |
| 363 | environmental pollution | 3 | 50 | 3533 | 4190 |
| 366 | Nuclear Medicine | 3 | 49 | 769 | 824 |
| 366 | Virtual reality | 7 | 49 | 198 | 515 |
| 366 | Pollution | 2 | 49 | 4515 | 4774 |
| 369 | Sustainable Engineering | 2 | 47 | 1815 | 1999 |
| 369 | Radiation effects | 3 | 47 | 634 | 1001 |
| 371 | Freeze-Drying | 1 | 46 | 664 | 497 |
| 371 | Hypothermia | 1 | 46 | 664 | 497 |
| 371 | Freeze Drying | 1 | 46 | 664 | 497 |
| 374 | Fluid Mechanics | 2 | 45 | 1652 | 1498 |
| 374 | sanitation | 1 | 45 | 1804 | 1947 |
| 374 | Radio | 4 | 45 | 1164 | 1489 |
| 377 | Neuroanatomy | 2 | 44 | 308 | 373 |
| 377 | Human-robot interaction | 1 | 44 | 121 | 100 |
| 379 | Oligosaccharide | 1 | 43 | 484 | 477 |
| 379 | Carbohydrates | 1 | 43 | 673 | 601 |
| 381 | Schizophrenia | 1 | 42 | 1168 | 1115 |
| 382 | Osteoporosis | 3 | 41 | 309 | 462 |
| 382 | Bone diseases | 3 | 41 | 424 | 669 |
| 382 | motor skills | 1 | 41 | 411 | 272 |
| 385 | isomerism | 4 | 40 | 255 | 420 |
| 385 | Chirality | 4 | 40 | 255 | 420 |
| 387 | Power Electronics | 2 | 39 | 1131 | 1285 |
| 388 | Carbon | 3 | 38 | 1230 | 1888 |
| 388 | synthesis | 6 | 38 | 775 | 1144 |
| 390 | Pharmacognosy | 5 | 37 | 1405 | 2416 |
| 390 | Alternative Medicine | 5 | 37 | 1067 | 2081 |
| 390 | Autonomous robots | 3 | 37 | 159 | 328 |
| 390 | Biodiversity | 1 | 37 | 2833 | 2396 |
| 394 | Nanochemistry | 3 | 36 | 1257 | 1651 |
| 394 | fuel cells | 3 | 36 | 1174 | 1609 |
| 394 | Chemical processes | 1 | 36 | 979 | 738 |
| 394 | Biological productivity | 3 | 36 | 40 | 30 |
| 394 | nucleotides | 2 | 36 | 402 | 297 |
| 399 | Algae | 1 | 35 | 1043 | 944 |
| 399 | Seaweed | 1 | 35 | 818 | 817 |
| 401 | Proteomics | 1 | 34 | 1387 | 1412 |
| 401 | Geographic information systems | 2 | 34 | 1353 | 1307 |
| 401 | Fertilizers | 1 | 34 | 553 | 538 |
| 404 | Bioenergetics | 2 | 33 | 948 | 1260 |
| 404 | Immunochemistry | 1 | 33 | 1332 | 1194 |
| 404 | Ferroelectricity | 11 | 33 | 504 | 998 |
| 407 | Raman spectroscopy | 3 | 32 | 799 | 1143 |
| 407 | Microscopy | 3 | 32 | 1354 | 1560 |
| 409 | Orthopedics | 2 | 31 | 1346 | 1468 |
| 409 | Database Management | 4 | 31 | 643 | 993 |
| 409 | Operations Research | 1 | 31 | 2803 | 2419 |
| 409 | Flow cytometry | 1 | 31 | 522 | 527 |
| 413 | Databases | 2 | 30 | 436 | 493 |
| 413 | Molecular Imaging | 1 | 30 | 740 | 768 |
| 413 | human behavior | 2 | 30 | 2584 | 3370 |
| 413 | Europe | 1 | 30 | 3651 | 2952 |
| 417 | Energy Conversion | 2 | 29 | 1321 | 1714 |
| 417 | Energy Storage | 2 | 29 | 1429 | 1682 |
| 417 | Oxidative stress | 2 | 29 | 971 | 1572 |
| 417 | Water | 1 | 29 | 2964 | 3097 |
| 417 | Electrophoresis | 2 | 29 | 1686 | 2002 |
| 417 | Hormones | 3 | 29 | 1049 | 1562 |
| 417 | Fuzzy systems | 1 | 29 | 2510 | 1958 |
| 424 | Urology | 1 | 28 | 1510 | 1451 |
| 424 | Nanoelectronics | 4 | 28 | 656 | 925 |
| 424 | Industrial Safety | 1 | 28 | 1832 | 1593 |
| 424 | supercritical fluids | 1 | 28 | 678 | 754 |
| 428 | Microfabrication | 2 | 27 | 447 | 547 |
| 428 | Decision making | 2 | 27 | 1687 | 1992 |
| 430 | Production Engineering | 2 | 26 | 2135 | 2317 |
| 430 | Electromagnetism | 2 | 26 | 1172 | 1292 |
| 430 | Mental Disorders | 2 | 26 | 2484 | 2944 |
| 430 | Plastics | 3 | 26 | 1593 | 2093 |
| 430 | Porous materials | 1 | 26 | 1279 | 1084 |
| 430 | body temperature | 1 | 26 | 990 | 936 |
| 430 | Semiconductor industry | 3 | 26 | 559 | 793 |
| 430 | Mental illness | 2 | 26 | 1708 | 2207 |
| 438 | Data Mining | 4 | 25 | 1371 | 2326 |
| 438 | Plant hormones | 2 | 25 | 390 | 669 |
| 438 | Culture techniques | 2 | 25 | 336 | 413 |
| 441 | Pediatrics | 1 | 24 | 2493 | 2400 |
| 441 | behavioral medicine | 1 | 24 | 1826 | 2048 |
| 441 | Child | 1 | 24 | 2707 | 2477 |
| 441 | Thin Films | 5 | 24 | 355 | 753 |
| 441 | Child Development | 1 | 24 | 2293 | 2275 |
| 446 | Nanomedicine | 1 | 23 | 491 | 635 |
| 446 | Energy metabolism | 1 | 23 | 790 | 866 |
| 446 | optical pattern recognition | 4 | 23 | 84 | 177 |
| 446 | cell membrane | 1 | 23 | 754 | 853 |
| 450 | Magnetic Resonance Spectroscopy | 1 | 22 | 1444 | 1305 |
| 450 | Oligosaccharides | 1 | 22 | 448 | 520 |
| 450 | Asia | 4 | 22 | 2445 | 3402 |
| 450 | Central Asia | 4 | 22 | 95 | 398 |
| 450 | Protein engineering | 2 | 22 | 257 | 432 |
| 450 | molecular design | 2 | 22 | 284 | 435 |
| 456 | Nanophotonics | 1 | 21 | 552 | 642 |
| 456 | mutation | 1 | 21 | 827 | 974 |
| 458 | Statistics | 2 | 20 | 2566 | 2514 |
| 458 | Neurogenesis | 1 | 20 | 21 | 28 |
| 458 | management | 1 | 20 | 4297 | 4276 |
| 461 | Wireless Communication | 3 | 19 | 449 | 775 |
| 461 | Animal welfare | 2 | 19 | 337 | 600 |
| 461 | data collection | 1 | 19 | 1684 | 1768 |
| 464 | touch | 3 | 18 | 102 | 242 |
| 464 | antibiotics | 1 | 18 | 425 | 566 |
| 466 | Thermodynamics | 1 | 17 | 1863 | 1630 |
| 466 | Green Chemistry | 1 | 17 | 2142 | 2572 |
| 466 | Combustion | 1 | 17 | 1690 | 1832 |
| 469 | Industrial Design | 1 | 16 | 483 | 597 |
| 469 | Process Control | 1 | 16 | 1467 | 1822 |
| 469 | Land use | 1 | 16 | 1740 | 2005 |
| 469 | embryonic development | 1 | 16 | 644 | 805 |
| 469 | Radioisotopes | 4 | 16 | 867 | 1431 |
| 469 | city planning | 1 | 16 | 2320 | 2375 |
| 475 | Solar power plants | 2 | 15 | 212 | 480 |
| 475 | Photovoltaic Cells | 2 | 15 | 213 | 481 |
| 475 | Scanning electron microscopy | 1 | 15 | 293 | 313 |
| 478 | Serology | 1 | 14 | 860 | 1045 |
| 478 | Digital electronics | 4 | 14 | 254 | 503 |
| 478 | brewing | 2 | 14 | 235 | 400 |
| 481 | Functional Analysis | 1 | 13 | 1892 | 1823 |
| 481 | Nonlinear functional analysis | 1 | 13 | 1713 | 1755 |
| 481 | Cell cycle | 1 | 13 | 500 | 680 |
| 481 | Protozoa | 1 | 13 | 682 | 833 |
| 481 | cell proliferation | 1 | 13 | 534 | 708 |
| 481 | mathematical analysis | 1 | 13 | 3028 | 2754 |
| 487 | Plant Morphology | 1 | 12 | 988 | 1162 |
| 487 | Research Design | 1 | 12 | 1588 | 1877 |
| 487 | Kalman Filtering | 2 | 12 | 157 | 195 |
| 487 | Reproductive health | 1 | 12 | 1174 | 1449 |
| 487 | Liposomes | 1 | 12 | 945 | 1125 |
| 487 | Lipid bilayers | 1 | 12 | 784 | 894 |
| 487 | Mobile apps | 2 | 12 | 1 | 2 |
| 487 | Smartphones | 2 | 12 | 1 | 2 |
| 487 | Synapses | 1 | 12 | 418 | 603 |
| 496 | Chronobiology | 1 | 11 | 884 | 1014 |
| 496 | Social Psychology | 1 | 11 | 2962 | 3256 |
| 496 | Circadian rhythms | 1 | 11 | 679 | 880 |
| 496 | biological clocks | 1 | 11 | 884 | 1014 |
| 496 | Calorimetry | 1 | 11 | 1840 | 2045 |
| 496 | circadian rhythm | 1 | 11 | 884 | 1014 |
| 496 | biological rhythms | 1 | 11 | 848 | 990 |
| 496 | United States | 2 | 11 | 4596 | 5578 |
| 496 | Trace elements | 1 | 11 | 523 | 817 |
| 496 | Nonlinear systems | 2 | 11 | 738 | 1122 |
| 496 | Thermal analysis | 1 | 11 | 1840 | 2045 |
| 507 | Geriatrics | 2 | 10 | 2656 | 3462 |
| 507 | Acoustics | 10 | 10 | 153 | 513 |
| 507 | Cell migration | 1 | 10 | 197 | 388 |
| 507 | monoclonal antibodies | 2 | 10 | 320 | 564 |
| 507 | Synthetic biology | 1 | 10 | 506 | 692 |
| 507 | Video Games | 1 | 10 | 142 | 150 |
| 507 | Cell adhesion | 1 | 10 | 311 | 499 |
| 507 | Molecules | 1 | 10 | 2030 | 2124 |
| 507 | cell movement | 1 | 10 | 417 | 626 |
| 507 | Peroxisomes | 1 | 10 | 91 | 236 |
| 507 | primary prevention | 1 | 10 | 666 | 991 |
| 507 | educational innovations | 1 | 10 | 951 | 1179 |
| 519 | Computational Chemistry | 1 | 9 | 1044 | 1313 |
| 519 | Measurement | 1 | 9 | 2028 | 2409 |
| 519 | Microfluidics | 1 | 9 | 403 | 603 |
| 519 | Cardiovascular diseases | 1 | 9 | 1779 | 2031 |
| 519 | Testing | 1 | 9 | 170 | 236 |
| 524 | Medical Technology | 2 | 8 | 1750 | 2753 |
| 524 | Food Safety | 1 | 8 | 576 | 845 |
| 524 | Neurotoxicology | 1 | 8 | 959 | 1466 |
| 524 | Apoptosis | 1 | 8 | 515 | 875 |
| 524 | neurotoxins | 1 | 8 | 515 | 875 |
| 524 | Neurotoxic agents | 1 | 8 | 515 | 875 |
| 524 | Electromagnetic interference | 1 | 8 | 32 | 38 |
| 524 | peptides | 2 | 8 | 966 | 1639 |
| 524 | food industry | 1 | 8 | 1394 | 1724 |
| 524 | Nerve regeneration | 1 | 8 | 515 | 875 |
| 534 | Biochemical Genetics | 2 | 7 | 582 | 978 |
| 534 | Stereochemistry | 1 | 7 | 10 | 46 |
| 534 | Fluorescence spectroscopy | 1 | 7 | 379 | 548 |
| 534 | Molecular Spectroscopy | 1 | 7 | 2375 | 2894 |
| 534 | calcification | 1 | 7 | 705 | 992 |
| 534 | Learning | 1 | 7 | 1723 | 2203 |
| 540 | Software Maintenance | 2 | 6 | 244 | 539 |
| 540 | environmental protection | 1 | 6 | 4224 | 5038 |
| 540 | Powder Metallurgy | 1 | 6 | 434 | 482 |
| 540 | Sensor Networks | 1 | 6 | 528 | 692 |
| 540 | Ethology | 1 | 6 | 1820 | 2436 |
| 540 | Drug delivery systems | 1 | 6 | 2088 | 2653 |
| 540 | Antibodies | 1 | 6 | 758 | 1055 |
| 540 | carcinogens | 1 | 6 | 1315 | 1818 |
| 540 | Antigens | 1 | 6 | 929 | 1250 |
| 540 | Earth Sciences | 1 | 6 | 3792 | 4326 |
| 540 | drug therapy | 1 | 6 | 2018 | 2554 |
| 540 | carbon monoxide | 1 | 6 | 673 | 1097 |
| 540 | World Wide Web | 2 | 6 | 557 | 1053 |
| 553 | Visual Communication | 1 | 5 | 836 | 1122 |
| 553 | diffusion | 1 | 5 | 610 | 502 |
| 553 | Multivariate Analysis | 1 | 5 | 871 | 1121 |
| 553 | Image enhancement | 1 | 5 | 675 | 999 |
| 553 | Adaptive control systems | 1 | 5 | 1010 | 1328 |
| 553 | infection | 1 | 5 | 1833 | 2437 |
| 553 | fishing industry | 1 | 5 | 238 | 425 |
| 553 | Classification | 1 | 5 | 550 | 696 |
| 553 | Respiration | 1 | 5 | 1731 | 2234 |
| 553 | Fisheries | 1 | 5 | 2068 | 2508 |
| 563 | Ergonomics | 1 | 4 | 1343 | 1733 |
| 563 | Optoelectronics | 1 | 4 | 907 | 1138 |
| 563 | Population Genetics | 1 | 4 | 1534 | 2088 |
| 563 | Environmental monitoring | 1 | 4 | 4209 | 5257 |
| 563 | Cognitive neuroscience | 2 | 4 | 1030 | 1808 |
| 563 | Molecular ecology | 1 | 4 | 1347 | 1949 |
| 563 | Cell survival | 1 | 4 | 437 | 825 |
| 563 | Endocrine system | 1 | 4 | 925 | 725 |
| 563 | molecular chaperones | 1 | 4 | 497 | 846 |
| 572 | Soil Science | 1 | 3 | 2440 | 3129 |
| 572 | Telecommunications | 1 | 3 | 1402 | 1889 |
| 572 | Social Networks | 1 | 3 | 647 | 1075 |
| 572 | Sleep Disorders | 2 | 3 | 1442 | 2232 |
| 572 | Online social networks | 1 | 3 | 623 | 1071 |
| 572 | micromechanics | 1 | 3 | 945 | 1321 |
| 572 | Quantum Optics | 1 | 3 | 1254 | 1610 |
| 572 | motivation | 1 | 3 | 658 | 1082 |
| 572 | Emotion | 1 | 3 | 406 | 721 |
| 572 | sleep-wake cycle | 1 | 3 | 269 | 484 |
| 572 | Social work | 1 | 3 | 1993 | 2596 |
| 572 | minority groups | 1 | 3 | 171 | 293 |
| 572 | Atomic spectroscopy | 1 | 3 | 1534 | 1959 |
| 572 | Laser Spectroscopy | 1 | 3 | 1193 | 1557 |
| 572 | Sleep | 2 | 3 | 1474 | 2287 |
| 572 | Emotions | 1 | 3 | 897 | 1329 |
| 588 | Nutrition | 1 | 2 | 4266 | 5227 |
| 588 | Mathematics | 1 | 2 | 6002 | 6485 |
| 588 | Systems Analysis | 2 | 2 | 1392 | 2524 |
| 588 | Diagnosis | 1 | 2 | 666 | 1070 |
| 588 | Superconductors | 1 | 2 | 1177 | 1487 |
| 588 | Superconductivity | 1 | 2 | 686 | 959 |
| 588 | Food | 1 | 2 | 3686 | 4755 |
| 588 | families | 1 | 2 | 1373 | 1931 |
| 588 | color | 1 | 2 | 487 | 827 |
| 588 | vitamins | 1 | 2 | 284 | 592 |
| 598 | Water pollution | 1 | 1 | 3169 | 4192 |
| 598 | Nonlinear Optics | 1 | 1 | 257 | 393 |
| 598 | Waste management | 1 | 1 | 2042 | 2837 |
| 598 | Water Purification | 1 | 1 | 1714 | 2454 |
| 598 | Water quality management | 1 | 1 | 2490 | 3451 |
| 598 | Ultrasonics | 6 | 1 | 820 | 2491 |
| 598 | Entropy | 1 | 1 | 1891 | 2620 |
| 598 | Biometrics | 1 | 1 | 1353 | 1843 |
| 598 | extraterrestrial environment | 1 | 1 | 933 | 1382 |
| 598 | Ultrasound | 3 | 1 | 692 | 1613 |
| 598 | Radio frequency | 3 | 1 | 431 | 1076 |
| 609 | Special Education | 1 | 0 | 1213 | 1789 |
| 609 | Avionics | 1 | 0 | 250 | 501 |
| 609 | Agricultural Biotechnology | 1 | 0 | 577 | 922 |
| 609 | Acoustic holography | 3 | 0 | 73 | 207 |
| 609 | Combinatorial optimization | 1 | 0 | 954 | 1434 |
| 609 | Risk assessment | 1 | 0 | 1157 | 2003 |
| 609 | Neurotransmitters | 1 | 0 | 769 | 961 |
| 609 | Drug design | 1 | 0 | 2138 | 3004 |
| 609 | Neuropharmacology | 1 | 0 | 886 | 1390 |
| 609 | Chromatography | 1 | 0 | 2089 | 2854 |
| 609 | Smoking | 1 | 0 | 1029 | 1587 |
| 609 | Obesity | 1 | 0 | 2157 | 3140 |
| 609 | Substance Abuse | 1 | 0 | 1798 | 2621 |
| 609 | Digital humanities | 1 | 0 | 228 | 512 |
| 609 | Holography | 3 | 0 | 73 | 207 |
| 609 | Ubiquitous computing | 2 | 0 | 394 | 1072 |
| 609 | Acoustic imaging | 3 | 0 | 73 | 207 |
| 609 | Ultrasonic Imaging | 3 | 0 | 502 | 1337 |
| 609 | drug addiction | 1 | 0 | 1386 | 2075 |
| 609 | alcoholism | 1 | 0 | 1759 | 2538 |
| 609 | Chromatographic analysis | 1 | 0 | 2338 | 3109 |