| 1 | Physics | 191 | 13.8K | 1276 | 1006 |
| 2 | Chemistry | 217 | 13.4K | 1283 | 968 |
| 3 | Materials | 146 | 12.2K | 937 | 525 |
| 4 | Medicine | 239 | 11.7K | 952 | 770 |
| 5 | Science | 195 | 11.6K | 1030 | 982 |
| 6 | Biology | 121 | 10.6K | 1267 | 998 |
| 7 | Environmental Health | 201 | 10.3K | 374 | 344 |
| 8 | transport vesicles | 5 | 10.1K | 113 | 127 |
| 9 | Research | 215 | 9.1K | 845 | 679 |
| 10 | Environment | 146 | 8.6K | 534 | 584 |
| 11 | Neurology | 136 | 8.3K | 719 | 610 |
| 12 | Public Health | 113 | 7.2K | 638 | 409 |
| 13 | Molecular Biology | 122 | 7.1K | 1215 | 982 |
| 14 | Biochemistry | 109 | 6.6K | 1609 | 1151 |
| 15 | Ecology | 137 | 6.4K | 816 | 845 |
| 16 | Cytology | 31 | 5.4K | 1196 | 646 |
| 17 | Cell Biology | 26 | 5.2K | 1223 | 643 |
| 18 | Biophysics | 93 | 5.1K | 1002 | 743 |
| 19 | Cardiovascular diseases | 103 | 4.9K | 113 | 58 |
| 20 | Pollution | 64 | 4.9K | 1115 | 790 |
| 21 | risk factors | 100 | 4.9K | 12 | 8 |
| 22 | Virology | 19 | 4.8K | 969 | 490 |
| 23 | Environmental Policy | 95 | 4.8K | 276 | 308 |
| 24 | Materials Science | 86 | 4.6K | 815 | 646 |
| 25 | Environmental Engineering | 73 | 4.5K | 509 | 398 |
| 26 | fuel cells | 33 | 4.1K | 260 | 133 |
| 27 | Polymers | 122 | 3.9K | 703 | 637 |
| 28 | Environmental monitoring | 76 | 3.7K | 501 | 476 |
| 29 | environmental pollution | 64 | 3.6K | 824 | 668 |
| 30 | Botany | 47 | 3.5K | 994 | 682 |
| 31 | Plant physiology | 41 | 3.4K | 474 | 316 |
| 32 | Biotechnology | 50 | 3.3K | 1378 | 1040 |
| 33 | Solid State Physics | 117 | 3.3K | 695 | 648 |
| 34 | polymerization | 101 | 3.1K | 644 | 592 |
| 35 | Epidemiology | 109 | 3.1K | 392 | 420 |
| 36 | management | 44 | 3.1K | 835 | 607 |
| 37 | Statistics | 137 | 3.0K | 242 | 284 |
| 38 | Small Business | 28 | 2.9K | 88 | 94 |
| 39 | Transportation | 87 | 2.8K | 183 | 181 |
| 40 | Optical materials | 52 | 2.8K | 543 | 438 |
| 41 | Natural history | 9 | 2.8K | 1710 | 1184 |
| 42 | Microbiology | 61 | 2.8K | 1326 | 1227 |
| 43 | environmental protection | 69 | 2.8K | 459 | 457 |
| 44 | Environmental Law | 62 | 2.6K | 75 | 147 |
| 45 | Artificial Intelligence | 33 | 2.6K | 1131 | 555 |
| 46 | Public Policy | 28 | 2.5K | 419 | 164 |
| 47 | United States | 37 | 2.4K | 1258 | 690 |
| 48 | System analysis | 39 | 2.4K | 491 | 214 |
| 49 | Environmental Toxicology | 26 | 2.3K | 646 | 326 |
| 50 | Nanotechnology | 56 | 2.2K | 1190 | 1157 |
| 51 | Statistical physics | 51 | 2.2K | 911 | 680 |
| 52 | soil microbiology | 18 | 2.2K | 517 | 304 |
| 53 | Microbial Ecology | 28 | 2.2K | 618 | 505 |
| 54 | Toxicology | 56 | 2.2K | 984 | 879 |
| 55 | Cognitive Science | 3 | 2.2K | 1530 | 233 |
| 56 | Systems Analysis | 18 | 2.2K | 315 | 36 |
| 57 | Immunology | 37 | 2.1K | 801 | 703 |
| 58 | Behavior | 15 | 2.1K | 1310 | 698 |
| 59 | Image Processing | 7 | 2.1K | 1443 | 384 |
| 60 | Signal Processing | 5 | 2.0K | 1886 | 496 |
| 61 | Environmental Microbiology | 16 | 2.0K | 459 | 243 |
| 62 | Neurons | 4 | 2.0K | 450 | 294 |
| 63 | Cardiovascular system | 18 | 1.9K | 495 | 393 |
| 64 | Technological Innovations | 7 | 1.9K | 605 | 45 |
| 65 | Europe | 63 | 1.9K | 516 | 397 |
| 66 | Biomedical Engineering | 51 | 1.9K | 1142 | 1025 |
| 67 | Economics | 34 | 1.9K | 1296 | 732 |
| 68 | sanitation | 11 | 1.8K | 698 | 435 |
| 69 | Nonlinear Dynamics | 44 | 1.8K | 521 | 413 |
| 70 | Biocompatible Materials | 57 | 1.8K | 858 | 1053 |
| 71 | Psychophysiology | 14 | 1.8K | 1233 | 672 |
| 72 | human behavior | 7 | 1.7K | 1484 | 642 |
| 73 | Geriatrics | 17 | 1.7K | 1043 | 459 |
| 74 | Hypertension | 22 | 1.7K | 472 | 435 |
| 75 | Aging | 16 | 1.7K | 1015 | 479 |
| 76 | Condensed Matter | 15 | 1.6K | 1497 | 832 |
| 77 | Biometrics | 74 | 1.6K | 100 | 153 |
| 78 | Plant cells | 15 | 1.6K | 463 | 437 |
| 79 | Animal Behavior | 5 | 1.5K | 1333 | 474 |
| 79 | Ethology | 5 | 1.5K | 1068 | 406 |
| 81 | solar cells | 43 | 1.5K | 66 | 109 |
| 82 | nanoscience | 27 | 1.5K | 932 | 815 |
| 83 | Environmental Management | 27 | 1.4K | 871 | 767 |
| 84 | Chemical Engineering | 33 | 1.3K | 1543 | 1443 |
| 84 | Bioengineering | 23 | 1.3K | 1438 | 1192 |
| 86 | Renewable Energy Sources | 25 | 1.3K | 806 | 959 |
| 87 | organization | 22 | 1.3K | 202 | 250 |
| 88 | Solar Energy | 33 | 1.3K | 296 | 332 |
| 89 | environmental remediation | 27 | 1.3K | 5 | 2 |
| 90 | Sports Medicine | 30 | 1.3K | 705 | 515 |
| 91 | Phytochemistry | 26 | 1.3K | 5 | 2 |
| 91 | Phytoremediation | 26 | 1.3K | 5 | 2 |
| 91 | Bioreactors | 26 | 1.3K | 5 | 2 |
| 94 | solar power | 30 | 1.3K | 92 | 112 |
| 95 | plant communities | 5 | 1.3K | 770 | 305 |
| 96 | Human genetics | 3 | 1.2K | 1341 | 949 |
| 97 | Pathology | 24 | 1.2K | 628 | 531 |
| 98 | Computer Graphics | 18 | 1.2K | 634 | 326 |
| 99 | Strategic planning | 24 | 1.2K | 98 | 92 |
| 100 | occupational diseases | 28 | 1.1K | 132 | 133 |
| 101 | Plant Ecology | 21 | 1.1K | 615 | 523 |
| 102 | Biomass Energy | 19 | 1.1K | 905 | 797 |
| 103 | Stem cells | 22 | 1.1K | 422 | 367 |
| 104 | Analytical Chemistry | 49 | 1.1K | 1185 | 1333 |
| 105 | Energy Conversion | 25 | 1.1K | 337 | 498 |
| 106 | Bioinformatics | 23 | 1.1K | 615 | 511 |
| 107 | Nervous system | 22 | 1.1K | 796 | 691 |
| 108 | Radiation effects | 18 | 1.1K | 99 | 71 |
| 109 | Roads | 43 | 1.1K | 139 | 97 |
| 110 | Medical Microbiology | 22 | 1.0K | 700 | 674 |
| 111 | Computational Biology | 30 | 1.0K | 602 | 627 |
| 112 | preventive medicine | 5 | 1.0K | 791 | 279 |
| 113 | Neurophysiology | 26 | 1.0K | 924 | 909 |
| 114 | Colloids | 46 | 990 | 1026 | 1308 |
| 115 | Reproduction | 25 | 984 | 703 | 577 |
| 116 | Biochemical Engineering | 12 | 981 | 1621 | 1367 |
| 117 | Organizational Sociology | 16 | 971 | 78 | 37 |
| 117 | Vaccines | 24 | 971 | 444 | 358 |
| 119 | Human-Computer Interaction | 57 | 965 | 94 | 269 |
| 120 | rehabilitation | 45 | 956 | 373 | 502 |
| 121 | Sustainable Development | 6 | 942 | 1408 | 483 |
| 122 | coal | 18 | 900 | 577 | 491 |
| 123 | innovation | 8 | 889 | 325 | 248 |
| 124 | Soil biology | 4 | 853 | 735 | 360 |
| 125 | Genomics | 20 | 838 | 1036 | 890 |
| 126 | Nanostructured Materials | 33 | 834 | 986 | 1117 |
| 127 | Autoimmunity | 17 | 828 | 216 | 217 |
| 128 | Genetic engineering | 7 | 801 | 1220 | 656 |
| 129 | Photonics | 25 | 799 | 637 | 684 |
| 130 | Pharmacology | 55 | 797 | 1181 | 1627 |
| 131 | Database Management | 39 | 794 | 124 | 195 |
| 132 | Heart Failure | 18 | 759 | 115 | 125 |
| 133 | Plant diseases | 13 | 758 | 896 | 525 |
| 134 | Mass Spectrometry | 26 | 738 | 295 | 297 |
| 135 | Industrial Microbiology | 6 | 726 | 1296 | 681 |
| 136 | Neurobiology | 20 | 724 | 605 | 701 |
| 137 | Proteomics | 18 | 716 | 294 | 307 |
| 138 | Cell differentiation | 13 | 710 | 654 | 681 |
| 139 | Immunity | 10 | 708 | 822 | 821 |
| 140 | Multiple sclerosis | 40 | 706 | 37 | 37 |
| 141 | Surface Chemistry | 30 | 697 | 1332 | 1479 |
| 142 | Mathematics | 73 | 691 | 1533 | 1643 |
| 143 | Physical Therapy | 32 | 678 | 261 | 384 |
| 144 | plant molecular biology | 6 | 665 | 959 | 705 |
| 145 | Catalysis | 27 | 659 | 1385 | 1603 |
| 146 | Critical Care Medicine | 13 | 657 | 550 | 622 |
| 147 | Operations Research | 10 | 648 | 1267 | 775 |
| 148 | Environmental Chemistry | 7 | 638 | 1291 | 870 |
| 148 | hygiene | 18 | 638 | 65 | 54 |
| 150 | Critical Care | 13 | 636 | 555 | 631 |
| 151 | Inflammation | 13 | 632 | 399 | 383 |
| 151 | marketing | 8 | 632 | 1235 | 776 |
| 153 | Parasitic Diseases | 27 | 618 | 479 | 609 |
| 154 | Building Materials | 13 | 617 | 858 | 829 |
| 155 | Biopharmaceutics | 37 | 614 | 134 | 338 |
| 156 | Magnetic Materials | 23 | 611 | 466 | 479 |
| 157 | Microorganisms | 4 | 605 | 813 | 434 |
| 158 | Social Sciences | 20 | 596 | 1233 | 868 |
| 159 | Astrocytes | 9 | 594 | 215 | 209 |
| 160 | Energy Policy | 10 | 579 | 1492 | 1320 |
| 161 | concrete | 7 | 571 | 600 | 460 |
| 162 | infection | 26 | 570 | 424 | 591 |
| 163 | Electrochemistry | 56 | 546 | 1037 | 1441 |
| 164 | Business | 16 | 545 | 912 | 1057 |
| 165 | Economic Development | 2 | 543 | 1775 | 626 |
| 166 | Energy Storage | 21 | 540 | 355 | 454 |
| 167 | Obstetrics | 23 | 528 | 682 | 718 |
| 168 | Climate change | 3 | 526 | 905 | 750 |
| 168 | Biodiversity conservation | 3 | 526 | 1397 | 889 |
| 168 | Eutrophication | 3 | 526 | 846 | 744 |
| 171 | Green Chemistry | 10 | 524 | 946 | 874 |
| 172 | Environmental pollutants | 19 | 511 | 740 | 901 |
| 173 | Differential Equations | 33 | 510 | 194 | 280 |
| 174 | pollutants | 18 | 507 | 605 | 767 |
| 175 | Gene expression regulation | 7 | 503 | 518 | 357 |
| 175 | Obesity | 14 | 503 | 759 | 812 |
| 175 | Cognition | 8 | 503 | 1034 | 725 |
| 178 | probabilities | 12 | 502 | 692 | 320 |
| 179 | Biodiversity | 10 | 501 | 1105 | 844 |
| 180 | Proteome | 14 | 500 | 434 | 480 |
| 180 | diseases | 1 | 500 | 535 | 387 |
| 180 | Disease | 1 | 500 | 530 | 383 |
| 183 | energy resources | 6 | 494 | 901 | 797 |
| 184 | Reproductive health | 12 | 489 | 269 | 198 |
| 184 | Biomass | 9 | 489 | 264 | 227 |
| 186 | actuators | 19 | 487 | 835 | 990 |
| 186 | transducers | 19 | 487 | 835 | 990 |
| 188 | Psychology | 19 | 486 | 1903 | 1681 |
| 189 | Plants | 5 | 485 | 1491 | 902 |
| 190 | DNA methylation | 6 | 482 | 129 | 87 |
| 191 | sustainability | 1 | 480 | 1427 | 378 |
| 192 | Physiology | 30 | 465 | 1237 | 1708 |
| 193 | drug resistance | 8 | 449 | 298 | 196 |
| 194 | Metabolism | 15 | 444 | 966 | 1143 |
| 194 | Organizational change | 5 | 444 | 529 | 200 |
| 196 | gene therapy | 8 | 438 | 518 | 472 |
| 196 | Entrepreneurship | 11 | 438 | 392 | 563 |
| 196 | proteins | 13 | 438 | 890 | 766 |
| 199 | Virtual reality | 8 | 436 | 168 | 94 |
| 200 | gene mapping | 10 | 431 | 901 | 887 |
| 201 | Cerebellum | 3 | 429 | 254 | 108 |
| 201 | Cerebellar ataxia | 3 | 429 | 254 | 108 |
| 203 | Telecommunication | 9 | 428 | 1506 | 1062 |
| 204 | Therapeutics | 8 | 427 | 845 | 705 |
| 205 | design | 16 | 424 | 57 | 63 |
| 206 | Pediatrics | 12 | 423 | 964 | 947 |
| 207 | Virulence | 5 | 422 | 713 | 647 |
| 208 | Mathematical Physics | 8 | 421 | 1832 | 1053 |
| 209 | Neuropsychology | 12 | 417 | 1070 | 956 |
| 210 | viruses | 5 | 404 | 893 | 683 |
| 211 | Infections | 16 | 392 | 358 | 560 |
| 211 | Cement | 5 | 392 | 427 | 388 |
| 213 | pain | 11 | 391 | 591 | 595 |
| 214 | Biosensors | 9 | 387 | 698 | 833 |
| 215 | Industrial Safety | 14 | 386 | 396 | 398 |
| 216 | Quality of life | 8 | 377 | 795 | 640 |
| 217 | Brain | 26 | 371 | 865 | 1252 |
| 217 | Membranes | 9 | 371 | 986 | 977 |
| 219 | Endocrinology | 9 | 369 | 1411 | 1355 |
| 219 | Autoantibodies | 8 | 369 | 271 | 258 |
| 219 | Autoimmune diseases | 8 | 369 | 311 | 293 |
| 222 | Sustainable Engineering | 7 | 361 | 1031 | 846 |
| 223 | Industrial Design | 14 | 359 | 46 | 58 |
| 224 | Visual Arts | 13 | 358 | 5 | 10 |
| 224 | Interpersonal Communication | 13 | 358 | 4 | 8 |
| 226 | Surgery | 3 | 355 | 1157 | 802 |
| 226 | Bioelectronics | 8 | 355 | 630 | 786 |
| 228 | Cardiovascular Pharmacology | 8 | 349 | 80 | 49 |
| 228 | drugs | 14 | 349 | 818 | 866 |
| 230 | Energy Harvesting | 6 | 347 | 270 | 349 |
| 231 | Marine Biology | 24 | 342 | 889 | 1248 |
| 232 | Molecular Genetics | 9 | 341 | 960 | 982 |
| 233 | Embryology | 7 | 338 | 859 | 800 |
| 233 | Ceramic materials | 17 | 338 | 463 | 544 |
| 235 | Genetics | 10 | 334 | 1673 | 1770 |
| 235 | disease outbreaks | 14 | 334 | 161 | 242 |
| 235 | Epidemics | 14 | 334 | 160 | 239 |
| 238 | Alzheimer's disease | 10 | 331 | 691 | 469 |
| 239 | Immunotherapy | 4 | 330 | 1281 | 925 |
| 240 | health planning | 19 | 328 | 744 | 822 |
| 241 | Transport | 7 | 327 | 314 | 279 |
| 242 | Metabolic diseases | 10 | 324 | 1002 | 1143 |
| 243 | Respiration | 15 | 323 | 583 | 723 |
| 243 | Immune system | 2 | 323 | 925 | 639 |
| 245 | Education | 12 | 321 | 1798 | 1388 |
| 246 | Parasitology | 18 | 319 | 883 | 1002 |
| 246 | Parasites | 18 | 319 | 507 | 631 |
| 246 | Information Science | 25 | 319 | 731 | 1355 |
| 249 | pain management | 5 | 318 | 411 | 224 |
| 250 | Mobile Computing | 24 | 316 | 252 | 453 |
| 251 | global environmental change | 1 | 314 | 1222 | 483 |
| 252 | Hazardous waste | 12 | 313 | 346 | 633 |
| 253 | locomotion | 27 | 308 | 88 | 292 |
| 253 | posture | 27 | 308 | 88 | 292 |
| 253 | gait | 27 | 308 | 88 | 292 |
| 253 | walking | 27 | 308 | 88 | 292 |
| 257 | Composite Materials | 8 | 307 | 1622 | 1596 |
| 258 | Neuroimmunology | 6 | 306 | 418 | 435 |
| 259 | radioactive waste | 10 | 302 | 335 | 602 |
| 259 | industrial waste | 10 | 302 | 356 | 605 |
| 261 | Systems Engineering | 8 | 296 | 1355 | 1027 |
| 262 | Clinical Immunology | 5 | 288 | 701 | 543 |
| 262 | biomedicine | 27 | 288 | 39 | 211 |
| 264 | Agricultural Ecology | 4 | 286 | 831 | 643 |
| 264 | Social Change | 2 | 286 | 1252 | 770 |
| 266 | energy conservation | 7 | 285 | 1344 | 1381 |
| 267 | Food additives | 2 | 284 | 1265 | 661 |
| 267 | food contamination | 2 | 284 | 1235 | 304 |
| 269 | disabilities | 14 | 283 | 223 | 287 |
| 270 | Developmental Biology | 8 | 281 | 1048 | 1151 |
| 271 | Diagnostic Imaging | 6 | 280 | 1178 | 829 |
| 271 | drug control | 6 | 280 | 211 | 142 |
| 273 | Transportation Engineering | 6 | 279 | 209 | 158 |
| 274 | Sociology | 10 | 278 | 1598 | 1369 |
| 274 | Geographic information systems | 20 | 278 | 237 | 352 |
| 276 | Pharmacokinetics | 25 | 276 | 124 | 431 |
| 277 | computer networks | 27 | 270 | 746 | 1324 |
| 277 | Recycling | 5 | 270 | 410 | 534 |
| 279 | Histology | 4 | 269 | 1415 | 1014 |
| 280 | Hematopoietic stem cell transplantation | 3 | 266 | 384 | 232 |
| 281 | Nutrition | 14 | 262 | 1775 | 2186 |
| 281 | Infertility | 5 | 262 | 572 | 550 |
| 281 | fertility | 5 | 262 | 627 | 592 |
| 284 | Statistical Mechanics | 8 | 261 | 377 | 258 |
| 285 | Technology | 8 | 259 | 2178 | 1860 |
| 286 | Medical Laboratory Science | 11 | 256 | 941 | 1249 |
| 287 | Molecular Microbiology | 1 | 253 | 1117 | 649 |
| 287 | Agronomy | 2 | 253 | 507 | 311 |
| 287 | Sustainable agriculture | 2 | 253 | 877 | 337 |
| 287 | Bacterial diseases | 1 | 253 | 514 | 103 |
| 291 | Neural circuitry | 9 | 251 | 1168 | 1243 |
| 292 | research and development | 2 | 250 | 412 | 194 |
| 293 | Diet | 4 | 246 | 1451 | 1295 |
| 294 | Automation | 7 | 245 | 1496 | 1357 |
| 294 | Electronics | 11 | 245 | 1781 | 1619 |
| 296 | Logistics | 6 | 244 | 354 | 355 |
| 297 | Meteorology | 4 | 242 | 1642 | 1338 |
| 298 | Child | 9 | 241 | 1173 | 1155 |
| 299 | Chromosome mapping | 7 | 240 | 1003 | 1053 |
| 300 | Intelligent Transportation Systems | 7 | 239 | 684 | 696 |
| 300 | Educational Psychology | 4 | 239 | 1177 | 812 |
| 302 | Plant Genetics | 2 | 235 | 753 | 515 |
| 302 | Immunopathology | 5 | 235 | 772 | 690 |
| 304 | Carbon | 10 | 233 | 661 | 1050 |
| 305 | Oncology | 14 | 228 | 802 | 1472 |
| 305 | Environmental Psychology | 5 | 228 | 229 | 320 |
| 307 | Radiology | 8 | 227 | 744 | 557 |
| 308 | Sports | 9 | 226 | 1184 | 1018 |
| 309 | Wireless Communication Systems | 7 | 225 | 1584 | 1258 |
| 310 | Earthquake Engineering | 15 | 223 | 595 | 833 |
| 310 | biofuels | 2 | 223 | 316 | 253 |
| 312 | Climatology | 2 | 222 | 1829 | 1070 |
| 313 | Structural Engineering | 13 | 221 | 764 | 887 |
| 313 | Solar power plants | 13 | 221 | 36 | 113 |
| 313 | Photovoltaic Cells | 13 | 221 | 37 | 113 |
| 316 | Drug delivery systems | 3 | 218 | 1492 | 1076 |
| 316 | genome | 4 | 218 | 1083 | 1030 |
| 318 | Business Ethics | 4 | 217 | 851 | 932 |
| 319 | Adolescent Medicine | 1 | 216 | 828 | 494 |
| 320 | Bone diseases | 5 | 215 | 296 | 350 |
| 320 | city planning | 12 | 215 | 728 | 884 |
| 322 | traffic safety | 6 | 209 | 152 | 81 |
| 323 | arthritis | 5 | 206 | 697 | 758 |
| 323 | Spectrum analysis | 17 | 206 | 1909 | 2397 |
| 323 | Attention | 11 | 206 | 718 | 890 |
| 326 | Data Mining | 10 | 202 | 756 | 997 |
| 326 | Psychoneuroimmunology | 5 | 202 | 409 | 507 |
| 328 | Bones | 9 | 200 | 357 | 567 |
| 329 | Rheumatology | 4 | 199 | 805 | 673 |
| 330 | Memory | 10 | 196 | 817 | 1022 |
| 331 | Tropical Medicine | 5 | 195 | 1244 | 885 |
| 332 | brain mapping | 4 | 193 | 492 | 489 |
| 333 | Antibacterial agents | 6 | 192 | 382 | 423 |
| 334 | Corporate governance | 3 | 190 | 639 | 384 |
| 335 | Production Engineering | 11 | 189 | 980 | 1068 |
| 335 | Pregnancy | 9 | 189 | 376 | 435 |
| 337 | Visual Perception | 9 | 186 | 760 | 911 |
| 337 | Hormones | 7 | 186 | 745 | 826 |
| 337 | Perception | 9 | 186 | 883 | 1029 |
| 340 | Algebra | 25 | 185 | 502 | 561 |
| 341 | Regional Planning | 8 | 183 | 882 | 902 |
| 341 | disease vectors | 7 | 183 | 550 | 614 |
| 343 | Biogeochemistry | 6 | 181 | 708 | 855 |
| 343 | Developmental Disabilities | 7 | 181 | 580 | 705 |
| 345 | Neurochemistry | 13 | 180 | 1065 | 1465 |
| 346 | Lightweight concrete | 2 | 179 | 518 | 493 |
| 347 | Agriculture | 6 | 178 | 1392 | 1256 |
| 348 | Venture Capital | 1 | 171 | 491 | 409 |
| 349 | Medical Physics | 13 | 169 | 687 | 1034 |
| 349 | weather forecasting | 1 | 169 | 305 | 128 |
| 351 | Zoology | 11 | 168 | 1324 | 1337 |
| 351 | Scandinavia | 3 | 168 | 567 | 328 |
| 353 | Agricultural systems | 5 | 167 | 204 | 237 |
| 354 | Ergonomics | 4 | 166 | 752 | 527 |
| 354 | Soil Science | 4 | 166 | 1542 | 1340 |
| 354 | X-rays | 2 | 166 | 648 | 223 |
| 357 | Law and Economics | 12 | 165 | 87 | 107 |
| 357 | Child Development | 6 | 165 | 1219 | 1255 |
| 359 | Primary health care | 8 | 164 | 881 | 935 |
| 360 | Psychiatry | 8 | 162 | 2174 | 2356 |
| 361 | epidemiologic methods | 11 | 161 | 25 | 52 |
| 362 | Population Genetics | 4 | 159 | 936 | 935 |
| 362 | Molecular ecology | 4 | 159 | 802 | 936 |
| 362 | visualization | 14 | 159 | 576 | 554 |
| 362 | Cerebral cortex | 5 | 159 | 630 | 707 |
| 366 | Ocean Engineering | 11 | 158 | 892 | 1172 |
| 366 | Diagnostic microbiology | 4 | 158 | 791 | 991 |
| 368 | software | 4 | 157 | 902 | 839 |
| 369 | Health Services Research | 10 | 156 | 726 | 899 |
| 370 | Cybernetics | 4 | 154 | 1318 | 1151 |
| 371 | Emergency Nursing | 6 | 153 | 57 | 54 |
| 372 | Mutagenesis | 4 | 152 | 323 | 187 |
| 372 | mutagens | 4 | 152 | 564 | 635 |
| 372 | Statistical models | 6 | 152 | 58 | 46 |
| 372 | Developing countries | 4 | 152 | 1938 | 1445 |
| 376 | biopolymers | 9 | 149 | 629 | 835 |
| 377 | Urban Policy | 5 | 148 | 621 | 653 |
| 377 | Agricultural Chemistry | 4 | 148 | 1798 | 1613 |
| 377 | Host-parasite interactions | 3 | 148 | 1039 | 1030 |
| 380 | food technology | 6 | 147 | 1722 | 1919 |
| 381 | Clinical Pharmacology | 5 | 146 | 869 | 832 |
| 381 | Risk Management | 5 | 146 | 443 | 439 |
| 381 | Physical fitness | 1 | 146 | 1493 | 739 |
| 384 | Health | 3 | 145 | 1883 | 1329 |
| 385 | Land use | 5 | 144 | 829 | 895 |
| 385 | Antibodies | 3 | 144 | 506 | 385 |
| 385 | Antigens | 3 | 144 | 644 | 494 |
| 388 | Probability | 4 | 143 | 476 | 396 |
| 388 | Green Technology | 3 | 143 | 384 | 216 |
| 388 | Financial management | 4 | 143 | 360 | 416 |
| 388 | Risk | 4 | 143 | 423 | 408 |
| 388 | biological evolution | 9 | 143 | 1065 | 1654 |
| 393 | Neurotransmitters | 18 | 142 | 131 | 314 |
| 394 | Women's health | 3 | 141 | 1161 | 731 |
| 395 | Databases | 9 | 139 | 185 | 267 |
| 395 | Magnetic Resonance Spectroscopy | 10 | 139 | 601 | 663 |
| 397 | Cell division | 3 | 138 | 330 | 323 |
| 398 | Neurosurgery | 6 | 137 | 613 | 686 |
| 398 | Advertising | 3 | 137 | 294 | 292 |
| 398 | Radiation | 12 | 137 | 1009 | 1286 |
| 398 | Soft Condensed Matter | 8 | 137 | 611 | 779 |
| 402 | Cancer | 11 | 136 | 1315 | 2020 |
| 403 | Robotics | 3 | 135 | 1614 | 1189 |
| 404 | Respiratory system | 4 | 134 | 434 | 438 |
| 404 | Food | 4 | 134 | 2472 | 2383 |
| 404 | Light | 2 | 134 | 995 | 869 |
| 407 | Systems Biology | 4 | 131 | 1146 | 1073 |
| 408 | data collection | 4 | 129 | 875 | 871 |
| 409 | packaging | 8 | 127 | 33 | 67 |
| 410 | Hematology | 5 | 124 | 1199 | 1299 |
| 410 | energy development | 2 | 124 | 1093 | 774 |
| 412 | Organic Chemistry | 8 | 122 | 1937 | 2204 |
| 413 | Plant genetic engineering | 1 | 120 | 1217 | 803 |
| 414 | Social Psychology | 2 | 119 | 2409 | 1721 |
| 414 | Cell metabolism | 3 | 119 | 600 | 828 |
| 416 | Bibliometrics | 12 | 118 | 27 | 136 |
| 417 | Natural resources | 6 | 117 | 480 | 667 |
| 418 | Flexible manufacturing systems | 5 | 116 | 246 | 335 |
| 418 | Muscles | 5 | 116 | 557 | 711 |
| 420 | Agricultural Biotechnology | 1 | 114 | 577 | 74 |
| 420 | Infection control | 3 | 114 | 287 | 264 |
| 422 | Microelectronics | 5 | 113 | 1277 | 1394 |
| 422 | Porous materials | 7 | 113 | 421 | 472 |
| 424 | Evolution | 5 | 112 | 1288 | 1453 |
| 425 | healthcare disparities | 4 | 111 | 367 | 363 |
| 425 | Electrophysiology | 4 | 111 | 740 | 615 |
| 425 | cytokines | 1 | 111 | 1591 | 1077 |
| 425 | Growth factors | 1 | 111 | 471 | 361 |
| 425 | Cytokine | 1 | 111 | 625 | 427 |
| 430 | Medical Technology | 11 | 110 | 685 | 1231 |
| 430 | Lipids | 3 | 110 | 1153 | 1156 |
| 430 | free radicals | 1 | 110 | 1639 | 1304 |
| 430 | miniaturization | 5 | 110 | 1301 | 1596 |
| 434 | Drug design | 2 | 109 | 1682 | 1269 |
| 435 | Health Education | 6 | 108 | 1170 | 1280 |
| 435 | Dementia | 8 | 108 | 764 | 734 |
| 437 | movement | 8 | 107 | 133 | 323 |
| 437 | Fuzzy systems | 5 | 107 | 1334 | 1059 |
| 439 | environmental indicators | 4 | 106 | 984 | 1235 |
| 440 | Long-Term Care | 2 | 105 | 570 | 486 |
| 440 | Long-term care facilities | 2 | 105 | 565 | 483 |
| 442 | Immunopharmacology | 1 | 104 | 1505 | 904 |
| 442 | Neuropharmacology | 1 | 104 | 886 | 493 |
| 444 | Socioeconomic Factors | 3 | 102 | 738 | 684 |
| 444 | Nanoparticles | 8 | 102 | 1127 | 1618 |
| 444 | Zeolites | 3 | 102 | 928 | 1023 |
| 444 | biological invasions | 3 | 102 | 590 | 567 |
| 448 | Nuclear Medicine | 2 | 100 | 905 | 650 |
| 448 | Optics | 9 | 100 | 2425 | 2540 |
| 448 | Environmental Economics | 4 | 100 | 280 | 289 |
| 448 | Molecular Imaging | 2 | 100 | 569 | 521 |
| 452 | Engineering | 8 | 99 | 2675 | 2977 |
| 452 | environmental exposure | 4 | 99 | 1594 | 1792 |
| 454 | Electrochemical Analysis | 4 | 98 | 1377 | 1367 |
| 455 | Erectile dysfunction | 14 | 97 | 47 | 188 |
| 455 | Mental Disorders | 5 | 97 | 1775 | 2051 |
| 457 | Genes | 5 | 96 | 789 | 938 |
| 458 | Architectural Design | 6 | 95 | 272 | 267 |
| 458 | Flexible electronics | 4 | 95 | 51 | 117 |
| 460 | Pediatric Neurology | 3 | 94 | 709 | 923 |
| 460 | Numerical Analysis | 8 | 94 | 1573 | 1676 |
| 462 | Homeostasis | 2 | 93 | 427 | 761 |
| 463 | Research Design | 7 | 92 | 669 | 1016 |
| 464 | Mycology | 3 | 91 | 1399 | 1317 |
| 464 | nucleic acids | 3 | 91 | 1320 | 1418 |
| 466 | Lung Transplantation | 4 | 90 | 272 | 329 |
| 466 | Heart transplantation | 4 | 90 | 272 | 329 |
| 466 | Transplantation | 4 | 90 | 681 | 823 |
| 469 | Hemodynamics | 7 | 89 | 352 | 665 |
| 470 | mathematical analysis | 15 | 88 | 1279 | 1641 |
| 471 | Molecular Pharmacology | 6 | 85 | 531 | 883 |
| 471 | poverty | 2 | 85 | 526 | 359 |
| 471 | finance | 5 | 85 | 1884 | 1897 |
| 474 | Orthopedics | 3 | 83 | 1171 | 1093 |
| 474 | Physical Chemistry | 5 | 83 | 1638 | 1798 |
| 474 | Sarcopenia | 4 | 83 | 290 | 518 |
| 477 | Genetic Toxicology | 2 | 82 | 527 | 535 |
| 477 | Psychometrics | 4 | 82 | 376 | 418 |
| 477 | Medical Anthropology | 3 | 82 | 1138 | 1326 |
| 477 | soil conservation | 3 | 82 | 763 | 811 |
| 477 | Animal ecology | 3 | 82 | 1059 | 1000 |
| 477 | Growth | 4 | 82 | 836 | 1186 |
| 483 | Nuclear Physics | 9 | 81 | 2450 | 2822 |
| 483 | amino acids | 2 | 81 | 721 | 636 |
| 485 | Thrombosis | 3 | 80 | 820 | 860 |
| 486 | Coastal zone management | 4 | 79 | 539 | 674 |
| 486 | nuclear magnetic resonance | 6 | 79 | 672 | 755 |
| 486 | Marine resources | 4 | 79 | 541 | 696 |
| 489 | Information Theory | 2 | 78 | 1508 | 1192 |
| 489 | Maternal health services | 1 | 78 | 606 | 341 |
| 489 | Child welfare | 1 | 78 | 1664 | 927 |
| 489 | Radiobiology | 4 | 78 | 888 | 1012 |
| 489 | Communication | 3 | 78 | 2022 | 1790 |
| 494 | Crystal growth | 4 | 77 | 889 | 1027 |
| 495 | Humanities | 4 | 76 | 1646 | 1223 |
| 495 | Osteoporosis | 5 | 76 | 207 | 315 |
| 495 | Chemical industry | 2 | 76 | 1484 | 1051 |
| 495 | cell physiology | 2 | 76 | 1388 | 1479 |
| 499 | Inclusive Education | 1 | 75 | 374 | 186 |
| 499 | Histocompatibility Testing | 1 | 75 | 694 | 416 |
| 499 | Integration | 1 | 75 | 359 | 185 |
| 499 | Cell death | 2 | 75 | 1062 | 1222 |
| 499 | population geography | 4 | 75 | 317 | 405 |
| 504 | Quantum electronics | 1 | 74 | 2165 | 1303 |
| 504 | Nutrition physiology | 1 | 74 | 1111 | 765 |
| 506 | Occupational Therapy | 4 | 73 | 837 | 607 |
| 506 | Medical Oncology | 3 | 73 | 1253 | 1395 |
| 506 | Manufacturing Processes | 5 | 73 | 1725 | 1990 |
| 506 | Product Design | 5 | 73 | 384 | 408 |
| 506 | Birds | 5 | 73 | 826 | 823 |
| 511 | Water pollution | 1 | 72 | 3169 | 2575 |
| 511 | Water | 1 | 72 | 2964 | 2538 |
| 511 | World Wide Web | 2 | 72 | 557 | 280 |
| 514 | Law | 13 | 71 | 537 | 662 |
| 514 | Occupational Health | 2 | 71 | 1186 | 843 |
| 514 | Semiconductors | 2 | 71 | 2315 | 1776 |
| 514 | Biomechanics | 4 | 71 | 1067 | 1243 |
| 514 | Fisheries | 4 | 71 | 1243 | 1313 |
| 519 | Municipal Engineering | 2 | 70 | 443 | 403 |
| 519 | Waste management | 2 | 70 | 1646 | 1307 |
| 519 | Steroids | 3 | 70 | 836 | 885 |
| 519 | Microscopy | 8 | 70 | 801 | 1135 |
| 519 | Vietnam | 5 | 70 | 29 | 72 |
| 524 | Clinical Chemistry | 6 | 69 | 1630 | 2252 |
| 524 | Brachytherapy | 7 | 69 | 100 | 120 |
| 526 | Ethics | 4 | 68 | 784 | 783 |
| 526 | industrial hygiene | 1 | 68 | 1618 | 694 |
| 526 | Immunogenetics | 3 | 68 | 558 | 585 |
| 526 | Calorimetry | 5 | 68 | 951 | 1132 |
| 526 | Allergy | 1 | 68 | 1183 | 1091 |
| 526 | Thermal analysis | 5 | 68 | 951 | 1132 |
| 532 | Food Microbiology | 4 | 67 | 957 | 1493 |
| 532 | Physical organic chemistry | 2 | 67 | 1599 | 1338 |
| 532 | Diabetes mellitus | 4 | 67 | 1342 | 1725 |
| 532 | Bioorganic chemistry | 2 | 67 | 2718 | 2528 |
| 532 | Teaching | 3 | 67 | 1723 | 1560 |
| 532 | Diabetes | 4 | 67 | 1384 | 1754 |
| 538 | Cardiac electrophysiology | 1 | 66 | 351 | 293 |
| 538 | calcification | 3 | 66 | 464 | 559 |
| 538 | arrhythmia | 1 | 66 | 351 | 293 |
| 538 | Genetic therapy | 2 | 66 | 976 | 994 |
| 542 | Astrophysics | 1 | 65 | 3267 | 2448 |
| 542 | Production Management | 3 | 65 | 1145 | 1490 |
| 542 | Molecular structure | 3 | 65 | 2356 | 2161 |
| 542 | Phylogeny | 5 | 65 | 648 | 1106 |
| 546 | Health Policy | 7 | 64 | 1217 | 1794 |
| 546 | mutation | 1 | 64 | 827 | 712 |
| 546 | air quality | 3 | 64 | 192 | 268 |
| 546 | Hospitality industry | 1 | 64 | 812 | 499 |
| 546 | drug abuse | 3 | 64 | 596 | 601 |
| 546 | harm reduction | 3 | 64 | 176 | 203 |
| 552 | Economic History | 1 | 63 | 4056 | 2528 |
| 552 | Exercise therapy | 5 | 63 | 279 | 403 |
| 552 | Molecules | 5 | 63 | 1183 | 1222 |
| 552 | Ethnology | 1 | 63 | 2188 | 1125 |
| 552 | Development | 1 | 63 | 1230 | 984 |
| 552 | Decision making | 4 | 63 | 1224 | 1455 |
| 552 | Economic Assistance | 1 | 63 | 1121 | 902 |
| 552 | world | 1 | 63 | 1116 | 991 |
| 560 | Pharmacy | 2 | 62 | 2053 | 1965 |
| 560 | Adsorption | 2 | 62 | 278 | 238 |
| 560 | Microstructure | 6 | 62 | 584 | 777 |
| 563 | Surface-Active Agents | 3 | 61 | 1133 | 1499 |
| 563 | Surface properties | 3 | 61 | 1183 | 1548 |
| 563 | Sea | 2 | 61 | 615 | 590 |
| 563 | Fishery resources | 2 | 61 | 681 | 646 |
| 563 | Chronic diseases | 5 | 61 | 431 | 700 |
| 568 | soil pollution | 2 | 60 | 724 | 648 |
| 568 | Ornithology | 3 | 60 | 892 | 786 |
| 568 | nuclear magnetic resonance spectroscopy | 4 | 60 | 625 | 634 |
| 568 | NMR | 4 | 60 | 457 | 458 |
| 568 | magnetic resonance | 4 | 60 | 465 | 474 |
| 573 | Asthma | 1 | 59 | 958 | 616 |
| 573 | Nonlinear functional analysis | 3 | 59 | 1214 | 1140 |
| 573 | peer review | 2 | 59 | 27 | 50 |
| 573 | Chemical analysis | 2 | 59 | 1272 | 1258 |
| 573 | scholarly publishing | 2 | 59 | 150 | 111 |
| 573 | Fungi | 2 | 59 | 1092 | 1149 |
| 579 | Medical genetics | 4 | 58 | 1494 | 2098 |
| 579 | Emerging infectious diseases | 2 | 58 | 374 | 417 |
| 579 | Medical Ethics | 3 | 58 | 1067 | 956 |
| 582 | Malaria | 2 | 57 | 708 | 708 |
| 582 | Adolescent | 5 | 57 | 1480 | 1886 |
| 582 | forestry | 2 | 57 | 269 | 270 |
| 582 | DNA polymerases | 1 | 57 | 550 | 710 |
| 586 | Psychosomatic Medicine | 4 | 56 | 578 | 860 |
| 586 | Genetic regulation | 3 | 56 | 949 | 1180 |
| 586 | reasoning | 3 | 56 | 426 | 448 |
| 586 | ecosystem | 3 | 56 | 1191 | 1585 |
| 586 | cardiac catheterization | 7 | 56 | 364 | 488 |
| 586 | drug therapy | 5 | 56 | 1213 | 1652 |
| 592 | Combinatorial analysis | 4 | 55 | 902 | 744 |
| 593 | Anatomy | 5 | 54 | 1405 | 1782 |
| 593 | Architecture | 3 | 54 | 549 | 432 |
| 593 | cosmic rays | 4 | 54 | 354 | 416 |
| 593 | Microcirculation | 7 | 54 | 252 | 560 |
| 597 | bioclimatology | 1 | 53 | 1552 | 1140 |
| 598 | Hydrology | 2 | 51 | 2512 | 2341 |
| 598 | Dynamics | 6 | 51 | 1183 | 1459 |
| 598 | Metabolic syndrome | 2 | 51 | 346 | 365 |
| 598 | Computational Complexity | 9 | 51 | 523 | 994 |
| 598 | Great Lakes | 2 | 51 | 267 | 275 |
| 598 | Thorax | 2 | 51 | 395 | 504 |
| 604 | Electromagnetism | 2 | 50 | 1172 | 1023 |
| 604 | Sleep Disorders | 1 | 50 | 1789 | 1361 |
| 604 | Marine biodiversity | 4 | 50 | 152 | 191 |
| 604 | Detectors | 5 | 50 | 1181 | 1684 |
| 604 | Sleep | 1 | 50 | 1844 | 1385 |
| 609 | Evolutionary Genetics | 1 | 49 | 1124 | 865 |
| 609 | Molecular Epidemiology | 1 | 49 | 1124 | 865 |
| 609 | Computational neuroscience | 1 | 49 | 69 | 41 |
| 609 | Multimedia Systems | 6 | 49 | 1299 | 1822 |
| 613 | Industrial Engineering | 5 | 48 | 1358 | 1995 |
| 613 | Clinical Biochemistry | 2 | 48 | 1194 | 1183 |
| 613 | Molecular evolution | 4 | 48 | 1178 | 1882 |
| 613 | Quantum theory | 3 | 48 | 999 | 987 |
| 617 | Pharmaceutical Chemistry | 5 | 47 | 2434 | 3170 |
| 617 | Public Administration | 6 | 47 | 944 | 1285 |
| 617 | Patient education | 2 | 47 | 662 | 774 |
| 617 | Medical innovations | 1 | 47 | 1246 | 1381 |
| 617 | counseling | 2 | 47 | 1466 | 1350 |
| 617 | Safety management | 6 | 47 | 307 | 619 |
| 617 | Autism | 3 | 47 | 632 | 908 |
| 624 | Chemotherapy | 3 | 46 | 960 | 1187 |
| 624 | Endocrine glands | 1 | 46 | 410 | 512 |
| 624 | Randomized Controlled Trials | 8 | 46 | 518 | 880 |
| 624 | Human Resources | 2 | 46 | 616 | 886 |
| 624 | Trace elements | 1 | 46 | 523 | 490 |
| 629 | Telemedicine | 2 | 45 | 401 | 510 |
| 629 | construction | 1 | 45 | 371 | 314 |
| 631 | Nanoelectronics | 3 | 44 | 752 | 764 |
| 631 | health services accessibility | 4 | 44 | 738 | 1043 |
| 631 | Computer-Aided Design | 5 | 44 | 916 | 1397 |
| 631 | Communication in marketing | 1 | 44 | 349 | 270 |
| 631 | Bacterial infections | 2 | 44 | 842 | 1111 |
| 631 | Semiconductor industry | 3 | 44 | 559 | 613 |
| 637 | Information Systems | 7 | 43 | 856 | 1740 |
| 637 | Nanobiotechnology | 3 | 43 | 403 | 877 |
| 637 | medical education | 4 | 43 | 1316 | 1669 |
| 637 | enzymes | 2 | 43 | 1593 | 1751 |
| 641 | Econometrics | 3 | 42 | 1329 | 1312 |
| 641 | Chromatographic analysis | 3 | 42 | 1697 | 1852 |
| 641 | econometric models | 2 | 42 | 830 | 920 |
| 644 | Audiology | 3 | 41 | 687 | 824 |
| 644 | Multivariate Analysis | 3 | 41 | 568 | 646 |
| 644 | Electrocardiography | 2 | 41 | 378 | 310 |
| 644 | Superconductors | 1 | 41 | 1177 | 836 |
| 644 | Superconductivity | 1 | 41 | 686 | 478 |
| 644 | Blood vessels | 5 | 41 | 247 | 554 |
| 644 | Protein engineering | 1 | 41 | 366 | 335 |
| 644 | molecular design | 1 | 41 | 409 | 338 |
| 644 | Exercise | 5 | 41 | 1106 | 1545 |
| 653 | Civil Engineering | 1 | 40 | 2136 | 1351 |
| 653 | Organizational Behavior | 2 | 40 | 697 | 892 |
| 655 | Mental Health | 1 | 39 | 2216 | 1744 |
| 655 | Hemostasis | 2 | 39 | 742 | 766 |
| 657 | Otolaryngology | 2 | 38 | 551 | 579 |
| 657 | Ethnic relations | 1 | 38 | 1042 | 599 |
| 657 | Combinatorial chemistry | 1 | 38 | 1055 | 1100 |
| 657 | Ethnic Conflict | 1 | 38 | 463 | 418 |
| 657 | forced migration | 1 | 38 | 463 | 418 |
| 657 | race relations | 1 | 38 | 952 | 708 |
| 663 | Ecological Engineering | 1 | 37 | 1093 | 1184 |
| 663 | Naval Architecture | 2 | 37 | 374 | 359 |
| 663 | Information Retrieval | 4 | 37 | 373 | 680 |
| 663 | Mental illness | 3 | 37 | 1479 | 2042 |
| 667 | Landscape Ecology | 1 | 36 | 702 | 759 |
| 667 | Histochemistry | 2 | 36 | 1125 | 1182 |
| 667 | Action Research | 2 | 36 | 322 | 303 |
| 670 | Animal Nutrition | 2 | 35 | 662 | 737 |
| 670 | Electrophoresis | 2 | 35 | 1686 | 1894 |
| 670 | Chromatography | 2 | 35 | 1710 | 1845 |
| 670 | Japan | 2 | 35 | 2040 | 1959 |
| 670 | cloning | 2 | 35 | 624 | 890 |
| 675 | Industrial Policy | 2 | 34 | 609 | 700 |
| 676 | Information Technology | 4 | 33 | 2156 | 2904 |
| 676 | Higher Education | 2 | 33 | 771 | 833 |
| 676 | Inventory Control | 1 | 33 | 179 | 216 |
| 676 | Neonatology | 1 | 33 | 942 | 810 |
| 676 | Fashion merchandising | 1 | 33 | 97 | 107 |
| 676 | Neuromuscular diseases | 1 | 33 | 797 | 760 |
| 676 | Product life cycle | 1 | 33 | 527 | 519 |
| 676 | green products | 1 | 33 | 448 | 496 |
| 676 | Fashion | 1 | 33 | 295 | 207 |
| 685 | Process Control | 2 | 32 | 1147 | 1637 |
| 685 | Travel | 2 | 32 | 899 | 1053 |
| 685 | Spectroscopy | 6 | 32 | 71 | 88 |
| 688 | Metallurgy | 4 | 31 | 1814 | 2236 |
| 688 | Nuclear Chemistry | 2 | 31 | 1238 | 1123 |
| 688 | Radiochemistry | 2 | 31 | 1158 | 1028 |
| 688 | Molecular recognition | 1 | 31 | 450 | 375 |
| 688 | animals | 3 | 31 | 1192 | 1394 |
| 693 | Neuropsychiatry | 1 | 30 | 1061 | 1043 |
| 693 | Hydraulic Engineering | 4 | 30 | 705 | 1093 |
| 693 | Radiation Protection | 4 | 30 | 506 | 603 |
| 693 | Hydrodynamics | 4 | 30 | 489 | 843 |
| 693 | Asia | 2 | 30 | 3255 | 3065 |
| 698 | Geochemistry | 1 | 29 | 2340 | 2317 |
| 698 | Contraception | 2 | 29 | 663 | 859 |
| 698 | Quality Assurance | 1 | 29 | 708 | 522 |
| 698 | Regional Development | 1 | 29 | 488 | 453 |
| 698 | Development planning | 1 | 29 | 452 | 427 |
| 698 | tests | 1 | 29 | 372 | 410 |
| 698 | Economic planning | 1 | 29 | 936 | 910 |
| 698 | Meteorites | 1 | 29 | 1070 | 1220 |
| 706 | Clinical Psychology | 2 | 28 | 1256 | 1536 |
| 706 | Horticulture | 1 | 28 | 1213 | 1063 |
| 706 | Geophysics | 1 | 28 | 3593 | 3384 |
| 706 | Geriatric Oncology | 1 | 28 | 798 | 861 |
| 706 | Biomolecules | 2 | 28 | 560 | 871 |
| 706 | Planets | 1 | 28 | 1685 | 1810 |
| 706 | wildlife diseases | 2 | 28 | 213 | 220 |
| 713 | epilepsy | 3 | 27 | 818 | 1184 |
| 713 | Developmental Neurobiology | 5 | 27 | 383 | 803 |
| 713 | Food preferences | 3 | 27 | 370 | 720 |
| 713 | commerce | 3 | 27 | 1575 | 2129 |
| 713 | carbon monoxide | 1 | 27 | 673 | 838 |
| 718 | Photochemistry | 3 | 26 | 1620 | 2321 |
| 718 | Gerontology | 4 | 26 | 1487 | 2037 |
| 718 | Photobiology | 3 | 26 | 1372 | 2035 |
| 718 | sociological factors | 2 | 26 | 38 | 17 |
| 718 | particles | 2 | 26 | 1255 | 1560 |
| 718 | Granular materials | 2 | 26 | 796 | 1149 |
| 718 | Imaging systems | 1 | 26 | 1397 | 987 |
| 725 | Criminology | 2 | 25 | 1049 | 1110 |
| 725 | Information visualization | 1 | 25 | 379 | 251 |
| 725 | Rheology | 1 | 25 | 887 | 859 |
| 725 | Measurement | 1 | 25 | 2028 | 1919 |
| 725 | Socialization | 1 | 25 | 882 | 1011 |
| 725 | patient care management | 2 | 25 | 18 | 18 |
| 725 | Patient Care | 2 | 25 | 20 | 21 |
| 725 | role | 1 | 25 | 759 | 907 |
| 725 | Geospatial data | 1 | 25 | 72 | 96 |
| 725 | Australia | 2 | 25 | 2055 | 2234 |
| 735 | Engineering Ethics | 1 | 24 | 379 | 408 |
| 735 | Educational Technology | 1 | 24 | 2569 | 2460 |
| 735 | technology transfer | 2 | 24 | 343 | 600 |
| 735 | Bioethics | 2 | 24 | 1081 | 1202 |
| 735 | Professional ethics | 1 | 24 | 547 | 576 |
| 740 | Health Services Administration | 3 | 23 | 939 | 1487 |
| 740 | local government | 1 | 23 | 591 | 643 |
| 740 | Smoking | 1 | 23 | 1029 | 1162 |
| 740 | Entropy | 2 | 23 | 1462 | 1618 |
| 740 | Child psychology | 2 | 23 | 1481 | 1905 |
| 740 | Chemical processes | 2 | 23 | 722 | 899 |
| 746 | Electrical Engineering | 21 | 22 | 1262 | 3015 |
| 746 | Clinical Trials | 2 | 22 | 548 | 697 |
| 746 | Bioremediation | 1 | 22 | 1467 | 1633 |
| 746 | Sexual health | 9 | 22 | 317 | 918 |
| 746 | Logic Programming | 4 | 22 | 273 | 397 |
| 746 | land degradation | 1 | 22 | 886 | 1012 |
| 746 | biological factors | 1 | 22 | 2551 | 2569 |
| 746 | rare diseases | 6 | 22 | 356 | 859 |
| 746 | DNA | 1 | 22 | 967 | 965 |
| 746 | degradation | 1 | 22 | 886 | 1012 |
| 756 | air quality management | 1 | 21 | 947 | 1103 |
| 756 | Biological Systems | 1 | 21 | 953 | 1032 |
| 756 | protein | 1 | 21 | 1567 | 1557 |
| 756 | Luminescence | 1 | 21 | 1941 | 1899 |
| 756 | indoor air pollution | 1 | 21 | 675 | 772 |
| 756 | Ventilation | 1 | 21 | 895 | 904 |
| 756 | Sick building syndrome | 1 | 21 | 675 | 772 |
| 763 | Paleontology | 2 | 20 | 1358 | 1578 |
| 763 | Computational Chemistry | 1 | 20 | 1044 | 1100 |
| 763 | Emergency Medicine | 3 | 20 | 1082 | 1449 |
| 763 | Chemical kinetics | 2 | 20 | 987 | 1042 |
| 763 | Nanostructures | 2 | 20 | 2171 | 2672 |
| 763 | breastfeeding | 2 | 20 | 574 | 860 |
| 763 | Radioisotopes | 3 | 20 | 993 | 1320 |
| 763 | industrial relations | 3 | 20 | 828 | 1247 |
| 771 | Computer Science | 3 | 19 | 2052 | 2669 |
| 771 | Plasma chemistry | 2 | 19 | 487 | 721 |
| 771 | Expert Systems | 2 | 19 | 303 | 467 |
| 771 | Decision Support Systems | 3 | 19 | 128 | 357 |
| 771 | economic policy | 4 | 19 | 1955 | 2668 |
| 771 | Screening | 5 | 19 | 87 | 390 |
| 771 | Plasma polymerization | 2 | 19 | 320 | 494 |
| 778 | Engineering Mathematics | 4 | 18 | 1663 | 2313 |
| 778 | Landscape Architecture | 2 | 18 | 197 | 199 |
| 778 | Neurotoxicology | 1 | 18 | 959 | 1259 |
| 778 | Reproductive toxicology | 1 | 18 | 699 | 879 |
| 778 | Cardiac rehabilitation | 1 | 18 | 128 | 193 |
| 778 | Chromosomes | 1 | 18 | 1216 | 1408 |
| 778 | internet | 2 | 18 | 1863 | 2321 |
| 778 | cell interaction | 1 | 18 | 1354 | 1592 |
| 778 | Fluorescence | 1 | 18 | 936 | 868 |
| 778 | Cell communication | 1 | 18 | 901 | 1155 |
| 788 | Ophthalmology | 1 | 17 | 1887 | 2045 |
| 788 | Functional Analysis | 1 | 17 | 1892 | 1728 |
| 788 | Emergency Medical Services | 2 | 17 | 758 | 1050 |
| 788 | Morphology | 2 | 17 | 1074 | 1201 |
| 788 | Energy Consumption | 1 | 17 | 705 | 914 |
| 788 | Genetic variation | 2 | 17 | 148 | 319 |
| 788 | Formal Languages | 2 | 17 | 392 | 399 |
| 795 | Astronomy | 1 | 16 | 2839 | 2864 |
| 795 | Telecommunication Systems | 1 | 16 | 2294 | 2170 |
| 795 | Machine Learning | 1 | 16 | 570 | 604 |
| 795 | Conservation Biology | 2 | 16 | 1238 | 1688 |
| 795 | Stochastic Processes | 3 | 16 | 936 | 1405 |
| 795 | Amyotrophic Lateral Sclerosis | 1 | 16 | 359 | 454 |
| 795 | Frontotemporal lobar degeneration | 1 | 16 | 293 | 358 |
| 795 | Molecular Spectroscopy | 2 | 16 | 2023 | 2597 |
| 795 | Housing | 2 | 16 | 611 | 1010 |
| 795 | mycoses | 1 | 16 | 1080 | 1264 |
| 795 | Jurisprudence | 5 | 16 | 681 | 1270 |
| 795 | Population | 2 | 16 | 1015 | 1545 |
| 795 | data protection | 1 | 16 | 1109 | 1067 |
| 808 | Animal health | 1 | 15 | 782 | 758 |
| 808 | consumer behavior | 1 | 15 | 973 | 1229 |
| 808 | Urban Transportation | 2 | 15 | 166 | 330 |
| 808 | Lymphoma | 1 | 15 | 512 | 485 |
| 808 | Multiple Myeloma | 1 | 15 | 506 | 479 |
| 808 | micromechanics | 3 | 15 | 590 | 1054 |
| 808 | Qualitative Research | 4 | 15 | 433 | 947 |
| 808 | Leukemia | 1 | 15 | 944 | 1082 |
| 808 | Family Therapy | 1 | 15 | 1152 | 1184 |
| 808 | child mental health | 1 | 15 | 787 | 900 |
| 808 | older people | 4 | 15 | 1277 | 1908 |
| 808 | freshwater biology | 3 | 15 | 894 | 1553 |
| 808 | Consciousness | 1 | 15 | 814 | 822 |
| 821 | Internet of Things | 1 | 14 | 1576 | 1807 |
| 821 | blood transfusion | 1 | 14 | 758 | 820 |
| 821 | Federal government | 1 | 14 | 348 | 347 |
| 821 | England | 4 | 14 | 148 | 160 |
| 821 | urban forestry | 2 | 14 | 347 | 686 |
| 821 | Intellectual disability | 1 | 14 | 1153 | 1254 |
| 821 | pigments | 1 | 14 | 1360 | 1606 |
| 828 | Interior Architecture | 1 | 13 | 3 | 1 |
| 828 | Micropaleontology | 2 | 13 | 169 | 264 |
| 828 | monitoring | 4 | 13 | 207 | 534 |
| 828 | Learning | 2 | 13 | 1352 | 2007 |
| 828 | Reading | 1 | 13 | 919 | 1029 |
| 828 | DNA repair | 1 | 13 | 460 | 646 |
| 828 | RNA | 1 | 13 | 747 | 986 |
| 828 | Birth control | 1 | 13 | 750 | 994 |
| 836 | Land Use Planning | 1 | 12 | 633 | 838 |
| 836 | Adolescent Psychology | 1 | 12 | 1237 | 1434 |
| 836 | personality | 1 | 12 | 2048 | 2389 |
| 836 | Algae | 1 | 12 | 1043 | 1213 |
| 836 | synthesis | 1 | 12 | 1643 | 1704 |
| 836 | Metals | 1 | 12 | 2543 | 2686 |
| 842 | Geography | 1 | 11 | 2643 | 2913 |
| 842 | Archaeology | 4 | 11 | 1094 | 1706 |
| 842 | Geology | 1 | 11 | 3218 | 3447 |
| 842 | Pharmaceutical Technology | 1 | 11 | 1940 | 2345 |
| 842 | Health equity | 1 | 11 | 141 | 186 |
| 842 | urban health | 1 | 11 | 429 | 616 |
| 842 | Cell cycle | 1 | 11 | 500 | 706 |
| 842 | cell proliferation | 1 | 11 | 534 | 738 |
| 842 | Genetic markers | 1 | 11 | 513 | 696 |
| 842 | Library Science | 4 | 11 | 766 | 1489 |
| 842 | catalytic activity | 1 | 11 | 968 | 1220 |
| 842 | electrocatalysis | 1 | 11 | 251 | 367 |
| 842 | biochemical markers | 1 | 11 | 1007 | 1278 |
| 842 | Culture | 2 | 11 | 1277 | 1582 |
| 842 | sex differences | 1 | 11 | 274 | 440 |
| 842 | optical devices | 1 | 11 | 817 | 990 |
| 842 | recreation | 2 | 11 | 809 | 1165 |
| 842 | sports injuries | 1 | 11 | 912 | 1059 |
| 860 | Nuclear Engineering | 3 | 10 | 1340 | 1964 |
| 860 | Nonparametric Statistics | 2 | 10 | 241 | 365 |
| 860 | genre | 1 | 10 | 463 | 650 |
| 860 | Sustainable urban development | 2 | 10 | 76 | 219 |
| 860 | Politics | 1 | 10 | 751 | 677 |
| 860 | Neuroanatomy | 1 | 10 | 474 | 675 |
| 860 | government | 1 | 10 | 815 | 775 |
| 860 | violence | 1 | 10 | 1462 | 1807 |
| 860 | sex crimes | 1 | 10 | 1009 | 1310 |
| 860 | drug evaluation | 2 | 10 | 1361 | 2117 |
| 860 | Kidney diseases | 1 | 10 | 1140 | 1376 |
| 871 | Urban Planning | 1 | 9 | 695 | 965 |
| 871 | Thermodynamics | 1 | 9 | 1863 | 1917 |
| 871 | Industrial Sociology | 1 | 9 | 303 | 464 |
| 871 | Financial Engineering | 1 | 9 | 365 | 628 |
| 871 | community development | 1 | 9 | 1018 | 1233 |
| 871 | patient satisfaction | 1 | 9 | 280 | 304 |
| 871 | Thermochemistry | 1 | 9 | 768 | 971 |
| 871 | Behavioral research | 2 | 9 | 794 | 1403 |
| 871 | Herpetology | 2 | 9 | 456 | 692 |
| 871 | International Finance | 2 | 9 | 1884 | 2603 |
| 871 | Elderly | 2 | 9 | 1325 | 1450 |
| 871 | Africa | 3 | 9 | 1514 | 2333 |
| 871 | Europa | 2 | 9 | 619 | 1053 |
| 871 | Zoonoses | 1 | 9 | 509 | 777 |
| 885 | Adult Education | 1 | 8 | 1056 | 1213 |
| 885 | Computational Linguistics | 1 | 8 | 1073 | 1159 |
| 885 | Wildlife conservation | 2 | 8 | 1158 | 1892 |
| 885 | Biofeedback | 1 | 8 | 240 | 481 |
| 885 | Quantum Gravity | 1 | 8 | 2253 | 2419 |
| 885 | Religion and law | 2 | 8 | 13 | 16 |
| 885 | Patient Safety | 1 | 8 | 164 | 223 |
| 885 | Wetland ecology | 1 | 8 | 830 | 1097 |
| 885 | Religion and Sociology | 2 | 8 | 324 | 443 |
| 885 | Ultrasonics | 1 | 8 | 1763 | 2310 |
| 885 | Social policy | 1 | 8 | 1609 | 1921 |
| 885 | Hemophilia | 1 | 8 | 506 | 643 |
| 885 | Wetland conservation | 1 | 8 | 616 | 870 |
| 885 | Ultrasonic Imaging | 1 | 8 | 837 | 1122 |
| 885 | Legislation | 3 | 8 | 7 | 31 |
| 885 | vascular diseases | 1 | 8 | 876 | 1185 |
| 885 | behavior therapy | 1 | 8 | 1135 | 1421 |
| 885 | forest policy | 1 | 8 | 612 | 898 |
| 885 | Radio waves | 1 | 8 | 1157 | 1419 |
| 885 | Comparative Law | 7 | 8 | 121 | 279 |
| 885 | Radio | 1 | 8 | 1823 | 2083 |
| 885 | Informatics | 3 | 8 | 823 | 1629 |
| 885 | Ultrasound | 1 | 8 | 1070 | 1422 |
| 885 | Egypt | 1 | 8 | 1125 | 1600 |
| 885 | Wetlands | 1 | 8 | 626 | 876 |
| 910 | Nuclear Energy | 2 | 7 | 1118 | 1614 |
| 910 | Nanochemistry | 2 | 7 | 1486 | 2366 |
| 910 | Forest Ecology | 1 | 7 | 1409 | 1906 |
| 910 | Solid State Chemistry | 1 | 7 | 2983 | 3375 |
| 910 | Quantum Optics | 1 | 7 | 1254 | 1462 |
| 910 | Social problems | 1 | 7 | 978 | 1302 |
| 910 | animal diseases | 1 | 7 | 804 | 1161 |
| 910 | Atomic spectroscopy | 1 | 7 | 1534 | 1809 |
| 910 | Laser Spectroscopy | 1 | 7 | 1193 | 1406 |
| 910 | Eigenvalues | 8 | 7 | 110 | 270 |
| 910 | Liquid chromatography | 1 | 7 | 886 | 1052 |
| 921 | Globalization | 1 | 6 | 1036 | 1415 |
| 921 | Pediatric Neuropsychology | 2 | 6 | 118 | 317 |
| 921 | organizational effectiveness | 1 | 6 | 817 | 1149 |
| 921 | Migration | 1 | 6 | 403 | 591 |
| 921 | Building | 1 | 6 | 893 | 1087 |
| 921 | China | 5 | 6 | 2094 | 4286 |
| 921 | Administration | 1 | 6 | 174 | 316 |
| 921 | health services | 2 | 6 | 1164 | 2043 |
| 929 | Petroleum Engineering | 1 | 5 | 1042 | 1415 |
| 929 | Software Engineering | 1 | 5 | 1462 | 1786 |
| 929 | Community Psychology | 1 | 5 | 897 | 1276 |
| 929 | Developmental Psychology | 1 | 5 | 1510 | 1978 |
| 929 | soil management | 1 | 5 | 882 | 1288 |
| 929 | Molecular cloning | 1 | 5 | 1905 | 2455 |
| 929 | Synaptic Transmission | 1 | 5 | 683 | 982 |
| 929 | Program Evaluation | 1 | 5 | 184 | 340 |
| 929 | Genetic recombination | 1 | 5 | 1874 | 2434 |
| 929 | Adhesion | 2 | 5 | 897 | 1562 |
| 929 | human development | 1 | 5 | 1227 | 1744 |
| 929 | Methodology | 1 | 5 | 988 | 1285 |
| 929 | Recombinant DNA | 1 | 5 | 1952 | 2519 |
| 929 | adhesives | 2 | 5 | 952 | 1604 |
| 929 | evaluation | 1 | 5 | 325 | 524 |
| 929 | eugenics | 1 | 5 | 876 | 1277 |
| 929 | Leisure | 1 | 5 | 581 | 953 |
| 946 | Systems Theory | 1 | 4 | 813 | 1116 |
| 946 | Gender Studies | 1 | 4 | 913 | 1335 |
| 946 | Ceramics | 1 | 4 | 2003 | 2388 |
| 946 | Regional Economics | 1 | 4 | 813 | 1204 |
| 946 | Quality Control | 1 | 4 | 2490 | 3295 |
| 946 | Orthopedic Surgery | 1 | 4 | 1003 | 1319 |
| 946 | Forensic Psychiatry | 1 | 4 | 800 | 1076 |
| 946 | Disability Studies | 1 | 4 | 471 | 745 |
| 946 | Organizational learning | 1 | 4 | 990 | 1544 |
| 946 | Queuing Theory | 2 | 4 | 203 | 386 |
| 946 | Risk assessment | 1 | 4 | 1157 | 1750 |
| 946 | ecological risk assessment | 1 | 4 | 523 | 937 |
| 946 | Knowledge management | 2 | 4 | 606 | 1582 |
| 946 | international trade | 2 | 4 | 920 | 1679 |
| 946 | Plastics | 1 | 4 | 2293 | 2829 |
| 946 | food handling | 1 | 4 | 1447 | 2125 |
| 946 | chronic fatigue syndrome | 2 | 4 | 56 | 198 |
| 946 | Liposomes | 2 | 4 | 737 | 1320 |
| 946 | toxicity testing | 1 | 4 | 1012 | 1560 |
| 946 | Lipid bilayers | 2 | 4 | 611 | 1047 |
| 946 | Glass | 1 | 4 | 1451 | 1936 |
| 946 | Health Risk Assessment | 1 | 4 | 889 | 1367 |
| 946 | pottery | 1 | 4 | 1378 | 1859 |
| 946 | Brain damage | 2 | 4 | 445 | 980 |
| 970 | Mechanical Engineering | 2 | 3 | 2557 | 3521 |
| 970 | Nursing | 1 | 3 | 2627 | 3220 |
| 970 | Political Geography | 1 | 3 | 504 | 790 |
| 970 | Pediatric Endocrinology | 1 | 3 | 546 | 734 |
| 970 | Power Electronics | 1 | 3 | 1354 | 1749 |
| 970 | Optical Communications | 1 | 3 | 1192 | 1577 |
| 970 | Demography | 1 | 3 | 1003 | 1423 |
| 970 | Supply Chain Management | 1 | 3 | 81 | 261 |
| 970 | emergency management | 1 | 3 | 1139 | 1762 |
| 970 | Nationalism | 1 | 3 | 621 | 854 |
| 970 | Carcinogenesis | 2 | 3 | 968 | 1767 |
| 970 | Regionalism | 1 | 3 | 433 | 688 |
| 970 | physical therapy techniques | 1 | 3 | 232 | 355 |
| 970 | Social welfare | 1 | 3 | 958 | 1412 |
| 970 | Evidence-Based Medicine | 2 | 3 | 876 | 1730 |
| 970 | Supramolecular chemistry | 1 | 3 | 501 | 785 |
| 970 | Speech Disorders | 1 | 3 | 1309 | 1730 |
| 970 | hazard mitigation | 1 | 3 | 1573 | 2268 |
| 970 | Family | 1 | 3 | 1497 | 2123 |
| 970 | families | 1 | 3 | 1373 | 1840 |
| 970 | Metabolic disorders in children | 1 | 3 | 517 | 708 |
| 970 | telemarketing | 1 | 3 | 230 | 525 |
| 970 | Nuclear family | 1 | 3 | 310 | 481 |
| 970 | Sites | 1 | 3 | 837 | 1252 |
| 970 | mental processes | 1 | 3 | 594 | 839 |
| 970 | public assistance | 1 | 3 | 110 | 153 |
| 996 | Performance Art | 1 | 2 | 51 | 84 |
| 996 | Computer Architecture | 1 | 2 | 909 | 1248 |
| 996 | Palliative Care | 1 | 2 | 1188 | 1709 |
| 996 | Digital Media | 1 | 2 | 401 | 658 |
| 996 | Algorithms | 1 | 2 | 1221 | 1637 |