| 1 | Chemistry | 5,050 | 317.7K | 31 | 35 |
| 2 | Physics | 2,026 | 89.2K | 202 | 329 |
| 3 | Materials | 1,343 | 88.6K | 112 | 81 |
| 4 | Nanotechnology | 1,524 | 86.1K | 44 | 58 |
| 5 | Catalysis | 1,191 | 63.6K | 20 | 21 |
| 6 | Biology | 788 | 61.0K | 374 | 417 |
| 7 | Pollution | 969 | 53.9K | 51 | 52 |
| 8 | Biocompatible Materials | 1,040 | 52.6K | 29 | 37 |
| 9 | Science | 828 | 46.2K | 375 | 506 |
| 10 | Biochemistry | 1,334 | 40.0K | 277 | 374 |
| 11 | Materials Science | 741 | 39.4K | 115 | 103 |
| 12 | Chemical Engineering | 801 | 39.3K | 90 | 72 |
| 13 | nanoscience | 517 | 37.9K | 47 | 37 |
| 14 | Environmental Health | 677 | 35.6K | 82 | 94 |
| 15 | Analytical Chemistry | 868 | 35.5K | 32 | 25 |
| 16 | Nanostructured Materials | 668 | 35.3K | 36 | 27 |
| 17 | Optical materials | 540 | 34.4K | 37 | 32 |
| 18 | environmental pollution | 580 | 29.4K | 48 | 34 |
| 19 | Environmental Engineering | 436 | 28.7K | 60 | 58 |
| 20 | Molecular Biology | 757 | 27.4K | 332 | 474 |
| 21 | Biotechnology | 596 | 26.5K | 150 | 209 |
| 22 | Ecology | 556 | 26.4K | 255 | 321 |
| 23 | Polymers | 827 | 26.3K | 100 | 108 |
| 24 | Environment | 455 | 23.5K | 153 | 244 |
| 25 | Optics | 1,295 | 23.4K | 51 | 92 |
| 26 | Nuclear Physics | 1,084 | 23.2K | 181 | 295 |
| 27 | Biochemical Engineering | 558 | 22.5K | 41 | 117 |
| 28 | Artificial Intelligence | 233 | 20.1K | 153 | 85 |
| 29 | sanitation | 255 | 19.8K | 44 | 51 |
| 30 | Bioengineering | 356 | 19.6K | 137 | 193 |
| 31 | polymerization | 606 | 19.6K | 105 | 108 |
| 32 | Organic Chemistry | 568 | 19.4K | 24 | 34 |
| 33 | Environmental monitoring | 332 | 18.2K | 54 | 45 |
| 34 | Colloids | 528 | 16.7K | 79 | 116 |
| 35 | Green Chemistry | 278 | 16.4K | 13 | 15 |
| 36 | Nanoparticles | 278 | 15.9K | 28 | 16 |
| 37 | fuel cells | 168 | 15.6K | 38 | 25 |
| 38 | Medicine | 453 | 15.3K | 655 | 798 |
| 39 | Electrochemistry | 377 | 14.8K | 198 | 103 |
| 40 | Energy Conversion | 129 | 14.4K | 76 | 58 |
| 41 | Surface Chemistry | 499 | 14.4K | 78 | 129 |
| 42 | Photonics | 463 | 14.3K | 26 | 64 |
| 43 | Microbiology | 455 | 14.3K | 348 | 536 |
| 44 | Cytology | 293 | 14.1K | 315 | 452 |
| 45 | Research | 488 | 13.9K | 466 | 561 |
| 46 | Environmental Management | 231 | 13.6K | 47 | 23 |
| 47 | Bioorganic chemistry | 373 | 13.1K | 32 | 47 |
| 48 | Natural history | 51 | 12.1K | 778 | 772 |
| 49 | Image Processing | 165 | 12.0K | 124 | 89 |
| 50 | Biomedical Engineering | 407 | 11.8K | 147 | 215 |
| 51 | Mathematics | 1,111 | 11.5K | 92 | 152 |
| 52 | Agricultural Chemistry | 327 | 11.5K | 39 | 41 |
| 53 | miniaturization | 164 | 11.4K | 97 | 117 |
| 54 | Water pollution | 174 | 11.0K | 127 | 101 |
| 55 | Signal Processing | 208 | 10.8K | 168 | 143 |
| 56 | Water | 158 | 10.7K | 145 | 127 |
| 57 | Carbon | 96 | 10.7K | 70 | 27 |
| 58 | Environmental Chemistry | 90 | 10.6K | 137 | 93 |
| 59 | Microelectronics | 138 | 10.4K | 142 | 110 |
| 60 | actuators | 208 | 10.2K | 52 | 29 |
| 60 | transducers | 208 | 10.2K | 52 | 29 |
| 62 | environmental protection | 236 | 10.0K | 70 | 79 |
| 63 | Environmental Policy | 303 | 9.5K | 46 | 145 |
| 64 | Physical Chemistry | 116 | 9.2K | 168 | 98 |
| 65 | China | 657 | 8.9K | 40 | 61 |
| 66 | Cell Biology | 178 | 8.7K | 421 | 619 |
| 67 | Pharmaceutical Chemistry | 297 | 8.3K | 157 | 253 |
| 68 | Statistical physics | 316 | 8.0K | 224 | 263 |
| 69 | Crystal growth | 156 | 7.9K | 6 | 4 |
| 70 | Toxicology | 230 | 7.6K | 314 | 361 |
| 71 | Energy Policy | 85 | 7.5K | 260 | 115 |
| 72 | Quantum Gravity | 404 | 7.4K | 139 | 287 |
| 73 | Biomass Energy | 117 | 7.3K | 140 | 131 |
| 74 | Sustainable Engineering | 159 | 7.2K | 28 | 37 |
| 75 | nucleic acids | 57 | 7.1K | 313 | 219 |
| 76 | Pharmacology | 262 | 7.0K | 490 | 551 |
| 77 | Biophysics | 364 | 7.0K | 389 | 627 |
| 78 | Organometallic chemistry | 422 | 6.9K | 2 | 5 |
| 79 | Biosensors | 126 | 6.7K | 30 | 34 |
| 80 | Renewable Energy Sources | 62 | 6.5K | 348 | 226 |
| 81 | lasers | 321 | 6.4K | 33 | 54 |
| 82 | Energy Storage | 96 | 6.0K | 62 | 38 |
| 83 | management | 176 | 6.0K | 211 | 351 |
| 84 | Bioelectronics | 102 | 5.9K | 29 | 31 |
| 85 | Cancer | 147 | 5.7K | 394 | 490 |
| 86 | Environmental Law | 84 | 5.6K | 51 | 56 |
| 87 | Solid State Physics | 286 | 5.5K | 382 | 504 |
| 88 | Information Science | 144 | 5.4K | 104 | 94 |
| 89 | Pharmaceutical Technology | 133 | 5.4K | 28 | 25 |
| 90 | Computer Vision | 49 | 5.3K | 157 | 98 |
| 91 | energy resources | 52 | 5.3K | 134 | 77 |
| 92 | Tourism | 172 | 5.2K | 38 | 92 |
| 93 | Immunology | 72 | 5.2K | 697 | 543 |
| 94 | Organometallic compounds | 212 | 5.1K | 5 | 16 |
| 95 | Bioinorganic chemistry | 137 | 5.0K | 20 | 11 |
| 96 | Physical organic chemistry | 184 | 4.9K | 10 | 12 |
| 97 | proteins | 146 | 4.9K | 97 | 145 |
| 98 | catalytic activity | 125 | 4.8K | 5 | 6 |
| 99 | Statistics | 310 | 4.8K | 88 | 197 |
| 100 | Environmental pollutants | 145 | 4.8K | 59 | 74 |
| 101 | Bioinformatics | 144 | 4.7K | 113 | 228 |
| 102 | Virology | 104 | 4.7K | 445 | 688 |
| 103 | Condensed Matter | 216 | 4.6K | 426 | 533 |
| 104 | Spectrum analysis | 239 | 4.6K | 362 | 682 |
| 105 | Solid State Chemistry | 201 | 4.6K | 95 | 100 |
| 106 | Computer Graphics | 72 | 4.5K | 207 | 123 |
| 107 | pollutants | 131 | 4.4K | 52 | 71 |
| 108 | Immunity | 28 | 4.4K | 611 | 450 |
| 109 | Clinical Chemistry | 129 | 4.3K | 261 | 295 |
| 110 | Environmental Toxicology | 154 | 4.2K | 72 | 183 |
| 111 | Computer Science | 97 | 4.2K | 71 | 20 |
| 112 | Energy Harvesting | 32 | 4.1K | 76 | 40 |
| 113 | biological factors | 88 | 4.1K | 83 | 58 |
| 114 | Mathematical Physics | 238 | 4.0K | 136 | 251 |
| 115 | Nanostructures | 148 | 4.0K | 43 | 189 |
| 116 | Systems Engineering | 138 | 3.9K | 83 | 91 |
| 117 | Automation | 123 | 3.9K | 203 | 306 |
| 118 | Cell death | 77 | 3.8K | 115 | 200 |
| 119 | Economics | 251 | 3.8K | 288 | 448 |
| 120 | Machine Learning | 22 | 3.8K | 49 | 32 |
| 121 | optical pattern recognition | 19 | 3.7K | 16 | 3 |
| 122 | Computational Biology | 114 | 3.7K | 211 | 344 |
| 123 | Neurology | 100 | 3.4K | 994 | 1165 |
| 124 | Molecular structure | 132 | 3.3K | 97 | 238 |
| 125 | natural products | 56 | 3.3K | 184 | 79 |
| 126 | Quantum electronics | 128 | 3.3K | 116 | 103 |
| 127 | Cell differentiation | 54 | 3.3K | 295 | 365 |
| 128 | mathematical analysis | 237 | 3.2K | 55 | 86 |
| 129 | Solar Energy | 83 | 3.1K | 82 | 115 |
| 130 | environmental exposure | 104 | 3.1K | 70 | 105 |
| 131 | United States | 105 | 3.0K | 653 | 621 |
| 132 | biopolymers | 81 | 3.0K | 97 | 88 |
| 133 | finance | 169 | 2.9K | 75 | 215 |
| 134 | Telecommunication | 144 | 2.9K | 227 | 375 |
| 135 | Electronics | 155 | 2.8K | 379 | 486 |
| 136 | solar cells | 67 | 2.8K | 35 | 47 |
| 137 | Magnetic Materials | 104 | 2.6K | 103 | 147 |
| 138 | Oncology | 34 | 2.6K | 570 | 671 |
| 139 | Production Management | 38 | 2.6K | 173 | 167 |
| 140 | Operations Research | 97 | 2.6K | 188 | 242 |
| 141 | Soft Condensed Matter | 65 | 2.6K | 121 | 100 |
| 142 | Chemical analysis | 60 | 2.5K | 50 | 38 |
| 143 | genome | 61 | 2.5K | 193 | 384 |
| 144 | solar power | 61 | 2.5K | 27 | 38 |
| 145 | Zeolites | 77 | 2.5K | 27 | 41 |
| 146 | Microbial Ecology | 84 | 2.4K | 274 | 527 |
| 147 | Geophysics | 34 | 2.4K | 1208 | 770 |
| 148 | International Finance | 127 | 2.3K | 42 | 116 |
| 149 | Autism | 7 | 2.3K | 433 | 101 |
| 150 | Atmospheric Physics | 28 | 2.3K | 494 | 327 |
| 151 | Genetics | 81 | 2.3K | 638 | 1043 |
| 152 | Information Theory | 104 | 2.3K | 100 | 176 |
| 153 | Mechatronics | 71 | 2.3K | 43 | 48 |
| 154 | Membranes | 67 | 2.2K | 235 | 343 |
| 155 | Genomics | 82 | 2.2K | 433 | 564 |
| 156 | Immune system | 7 | 2.2K | 659 | 342 |
| 157 | Control Theory | 115 | 2.2K | 130 | 197 |
| 158 | Neural circuitry | 102 | 2.1K | 98 | 206 |
| 159 | Atmospheric Chemistry | 21 | 2.1K | 359 | 251 |
| 160 | Botany | 86 | 2.1K | 705 | 957 |
| 161 | Physiology | 62 | 2.1K | 883 | 915 |
| 162 | Quality Control | 50 | 2.1K | 151 | 104 |
| 163 | Light | 15 | 2.1K | 351 | 261 |
| 164 | energy conservation | 30 | 2.0K | 471 | 412 |
| 165 | Business | 38 | 2.0K | 456 | 450 |
| 166 | Process Control | 29 | 2.0K | 130 | 113 |
| 167 | Histology | 71 | 2.0K | 221 | 312 |
| 168 | Industrial Microbiology | 56 | 1.9K | 195 | 291 |
| 169 | Economic History | 135 | 1.9K | 231 | 359 |
| 170 | Electrophoresis | 102 | 1.9K | 60 | 135 |
| 171 | Industrial Engineering | 46 | 1.9K | 294 | 232 |
| 171 | Molecular Spectroscopy | 86 | 1.9K | 91 | 113 |
| 173 | Chromatographic analysis | 129 | 1.8K | 65 | 123 |
| 174 | Food | 53 | 1.8K | 543 | 555 |
| 175 | Surface-Active Agents | 63 | 1.8K | 39 | 84 |
| 175 | Surface properties | 63 | 1.8K | 45 | 94 |
| 177 | coal | 47 | 1.8K | 257 | 279 |
| 178 | viruses | 43 | 1.7K | 335 | 428 |
| 179 | Stem cells | 52 | 1.7K | 250 | 344 |
| 180 | Pharmacognosy | 76 | 1.7K | 148 | 279 |
| 181 | Genetic engineering | 45 | 1.7K | 381 | 444 |
| 182 | energy development | 14 | 1.7K | 241 | 182 |
| 183 | Immunotherapy | 81 | 1.7K | 179 | 469 |
| 184 | Chromatography | 110 | 1.7K | 58 | 118 |
| 185 | economic policy | 107 | 1.6K | 147 | 234 |
| 186 | Transportation | 33 | 1.6K | 409 | 287 |
| 187 | Medical Laboratory Science | 56 | 1.6K | 303 | 511 |
| 187 | Multimedia Systems | 78 | 1.6K | 124 | 147 |
| 189 | Experimental Design | 21 | 1.6K | 58 | 47 |
| 189 | Optical Communications | 83 | 1.6K | 35 | 42 |
| 191 | Combinatorial analysis | 144 | 1.6K | 23 | 50 |
| 192 | Sustainable Development | 168 | 1.6K | 15 | 313 |
| 193 | Bacteriology | 35 | 1.6K | 467 | 532 |
| 194 | Information Technology | 79 | 1.6K | 159 | 356 |
| 195 | Developmental Biology | 20 | 1.5K | 756 | 616 |
| 196 | Astrophysics | 52 | 1.5K | 1007 | 1124 |
| 197 | Signal Transduction | 50 | 1.5K | 174 | 353 |
| 198 | Fiber Optics | 106 | 1.5K | 56 | 143 |
| 199 | Heterocyclic chemistry | 117 | 1.5K | 18 | 10 |
| 200 | Cybernetics | 39 | 1.5K | 311 | 329 |
| 201 | Logistics | 28 | 1.5K | 47 | 50 |
| 202 | Actuarial Science | 47 | 1.5K | 16 | 15 |
| 202 | insurance | 47 | 1.5K | 24 | 20 |
| 204 | Nanochemistry | 76 | 1.4K | 33 | 34 |
| 205 | Technology | 90 | 1.4K | 558 | 822 |
| 206 | Neurochemistry | 50 | 1.4K | 541 | 707 |
| 207 | Oncogenes | 32 | 1.4K | 311 | 456 |
| 208 | Nonlinear Dynamics | 42 | 1.3K | 491 | 449 |
| 209 | food technology | 50 | 1.3K | 436 | 518 |
| 210 | Analytical Biochemistry | 53 | 1.3K | 188 | 285 |
| 211 | Mental Disorders | 6 | 1.3K | 2164 | 870 |
| 212 | soil microbiology | 41 | 1.3K | 275 | 473 |
| 213 | Nutrition | 47 | 1.3K | 989 | 1207 |
| 214 | Host-parasite interactions | 12 | 1.2K | 574 | 491 |
| 215 | health planning | 96 | 1.2K | 117 | 263 |
| 216 | free radicals | 23 | 1.2K | 398 | 438 |
| 217 | Differential Equations | 64 | 1.2K | 74 | 100 |
| 218 | Genetic regulation | 27 | 1.2K | 272 | 371 |
| 219 | Virulence | 24 | 1.2K | 338 | 454 |
| 219 | computer networks | 56 | 1.2K | 399 | 497 |
| 221 | Radiography | 10 | 1.2K | 420 | 254 |
| 222 | Marine Biology | 40 | 1.2K | 661 | 676 |
| 223 | Brain | 53 | 1.2K | 645 | 862 |
| 224 | Investment analysis | 65 | 1.2K | 18 | 67 |
| 225 | probabilities | 119 | 1.2K | 59 | 119 |
| 226 | Parallel Processing | 16 | 1.2K | 155 | 99 |
| 227 | Plant physiology | 39 | 1.2K | 519 | 699 |
| 228 | Solitons | 42 | 1.2K | 91 | 81 |
| 228 | Fractals | 42 | 1.2K | 91 | 81 |
| 228 | Chaos | 42 | 1.2K | 91 | 81 |
| 231 | Graph Theory | 101 | 1.1K | 15 | 37 |
| 232 | synthesis | 103 | 1.1K | 18 | 31 |
| 233 | Metals | 24 | 1.1K | 759 | 572 |
| 234 | pigments | 49 | 1.1K | 71 | 81 |
| 235 | drugs | 24 | 1.1K | 664 | 426 |
| 236 | Electrochemical Analysis | 56 | 1.1K | 171 | 251 |
| 237 | Information Systems | 29 | 1.1K | 237 | 189 |
| 238 | Medicinal plants | 44 | 1.1K | 173 | 283 |
| 239 | Herbal medicine | 37 | 1.1K | 67 | 81 |
| 240 | gene mapping | 27 | 1.1K | 588 | 650 |
| 241 | Functional Analysis | 89 | 1.1K | 61 | 145 |
| 242 | multimedia | 31 | 1.1K | 96 | 97 |
| 242 | Interactive multimedia | 31 | 1.1K | 98 | 97 |
| 244 | Mineral resources | 19 | 1.1K | 76 | 47 |
| 245 | Pharmacy | 22 | 1.1K | 731 | 494 |
| 246 | Environmental Microbiology | 37 | 1.1K | 202 | 432 |
| 247 | Astronomy | 38 | 1.1K | 985 | 1084 |
| 248 | Calculus of Variations | 37 | 1.1K | 34 | 15 |
| 248 | Evolutionary Computation | 34 | 1.1K | 43 | 127 |
| 250 | Public Health | 29 | 1.0K | 1773 | 1646 |
| 251 | Medical Oncology | 34 | 1.0K | 492 | 602 |
| 252 | biocatalysis | 9 | 1.0K | 61 | 133 |
| 252 | Homogeneous catalysis | 9 | 1.0K | 61 | 133 |
| 252 | Heterogeneous catalysis | 9 | 1.0K | 61 | 133 |
| 255 | Neurophysiology | 37 | 1.0K | 833 | 1086 |
| 256 | Pathology | 30 | 1.0K | 686 | 760 |
| 256 | Informatics | 23 | 1.0K | 147 | 138 |
| 258 | Diagnostic Imaging | 48 | 1.0K | 361 | 523 |
| 259 | Chemical industry | 46 | 992 | 172 | 131 |
| 260 | Algebra | 89 | 991 | 110 | 116 |
| 261 | Composite Materials | 35 | 988 | 777 | 943 |
| 261 | Marine Pollution | 25 | 988 | 311 | 303 |
| 263 | Japan | 20 | 986 | 601 | 223 |
| 264 | Microbial Biotechnology | 30 | 982 | 91 | 95 |
| 265 | Engineering | 61 | 965 | 774 | 921 |
| 266 | Genetic algorithms | 29 | 964 | 30 | 118 |
| 267 | Allergy | 8 | 949 | 769 | 597 |
| 268 | Immunopharmacology | 65 | 948 | 76 | 163 |
| 269 | Earth Sciences | 62 | 945 | 601 | 946 |
| 269 | commerce | 47 | 945 | 148 | 347 |
| 271 | Chromosome mapping | 23 | 944 | 575 | 583 |
| 272 | cytokines | 65 | 937 | 83 | 278 |
| 273 | Manufacturing Processes | 22 | 929 | 844 | 608 |
| 274 | Drug delivery systems | 17 | 928 | 564 | 479 |
| 275 | Recycling | 20 | 912 | 117 | 175 |
| 276 | Ophthalmology | 63 | 909 | 315 | 569 |
| 277 | cloning | 13 | 902 | 242 | 261 |
| 278 | Proteome | 17 | 898 | 432 | 403 |
| 279 | Entrepreneurship | 12 | 896 | 344 | 331 |
| 280 | Nanobiotechnology | 30 | 872 | 44 | 89 |
| 281 | System analysis | 80 | 869 | 219 | 537 |
| 282 | Developing countries | 29 | 868 | 551 | 518 |
| 283 | Robotics | 55 | 867 | 254 | 419 |
| 283 | Food Microbiology | 23 | 867 | 312 | 381 |
| 285 | Capital market | 38 | 866 | 26 | 48 |
| 286 | Neuropsychology | 40 | 855 | 546 | 707 |
| 287 | Economic Development | 33 | 852 | 317 | 484 |
| 288 | Medical Microbiology | 27 | 851 | 734 | 963 |
| 289 | Social Change | 20 | 848 | 212 | 286 |
| 290 | Plant hormones | 5 | 840 | 201 | 36 |
| 291 | Semiconductors | 49 | 838 | 359 | 388 |
| 292 | Asia | 79 | 832 | 227 | 397 |
| 293 | Fuzzy systems | 27 | 829 | 300 | 148 |
| 293 | Catalysts | 30 | 829 | 82 | 106 |
| 295 | Optoelectronics | 135 | 825 | 6 | 13 |
| 296 | Wireless Communication Systems | 45 | 819 | 531 | 643 |
| 297 | Behavior | 19 | 815 | 1248 | 1286 |
| 298 | Photochemistry | 29 | 812 | 359 | 392 |
| 299 | Soil Science | 20 | 803 | 657 | 567 |
| 300 | Drug design | 30 | 802 | 289 | 391 |
| 301 | Psychology | 45 | 799 | 1142 | 1441 |
| 302 | Nonlinear functional analysis | 50 | 795 | 81 | 133 |
| 303 | Nanophotonics | 28 | 789 | 13 | 33 |
| 304 | Econometrics | 54 | 788 | 194 | 369 |
| 305 | Pharmacokinetics | 9 | 781 | 410 | 182 |
| 305 | Atomic spectroscopy | 52 | 781 | 116 | 225 |
| 307 | Metabolism | 20 | 779 | 1127 | 1233 |
| 308 | Proteomics | 14 | 774 | 439 | 352 |
| 308 | Photobiology | 25 | 774 | 233 | 233 |
| 310 | Hazardous waste | 24 | 770 | 142 | 282 |
| 311 | Oxidation-reduction | 9 | 763 | 440 | 379 |
| 312 | human behavior | 12 | 757 | 1171 | 1080 |
| 313 | Social Sciences | 47 | 746 | 621 | 695 |
| 314 | Public Policy | 19 | 745 | 564 | 462 |
| 315 | Europe | 18 | 740 | 1245 | 835 |
| 316 | Business Ethics | 13 | 737 | 371 | 424 |
| 317 | protein | 39 | 736 | 222 | 376 |
| 318 | Luminescence | 53 | 728 | 103 | 163 |
| 319 | environmental indicators | 21 | 727 | 243 | 299 |
| 320 | plant molecular biology | 27 | 705 | 448 | 787 |
| 321 | econometric models | 31 | 693 | 33 | 72 |
| 322 | Quantum Optics | 50 | 689 | 78 | 157 |
| 322 | radioactive waste | 18 | 689 | 155 | 299 |
| 322 | industrial waste | 19 | 689 | 154 | 299 |
| 322 | Laser Spectroscopy | 49 | 689 | 74 | 147 |
| 326 | Mycology | 24 | 686 | 477 | 542 |
| 327 | Liver diseases | 24 | 682 | 507 | 806 |
| 328 | Crystallography | 112 | 680 | 84 | 287 |
| 329 | Detectors | 54 | 665 | 154 | 324 |
| 330 | Diagnostic microbiology | 13 | 663 | 562 | 698 |
| 331 | Food service management | 18 | 662 | 74 | 134 |
| 332 | Geometry | 66 | 650 | 91 | 107 |
| 333 | Nervous system | 34 | 641 | 671 | 1155 |
| 334 | Systems Biology | 30 | 640 | 347 | 447 |
| 334 | carcinogens | 12 | 640 | 428 | 370 |
| 336 | Water quality management | 35 | 637 | 323 | 444 |
| 337 | Carcinogenesis | 10 | 631 | 504 | 387 |
| 338 | Oxidative stress | 7 | 627 | 517 | 373 |
| 339 | Dynamics | 44 | 624 | 174 | 255 |
| 340 | mutagens | 9 | 609 | 442 | 368 |
| 341 | Food additives | 22 | 605 | 300 | 426 |
| 341 | Plastics | 29 | 605 | 378 | 417 |
| 343 | particles | 15 | 604 | 292 | 162 |
| 344 | vibration | 19 | 603 | 368 | 309 |
| 345 | Plant diseases | 28 | 589 | 602 | 667 |
| 346 | city planning | 19 | 586 | 518 | 439 |
| 347 | Heterocyclic compounds | 55 | 584 | 79 | 97 |
| 348 | Sociology | 27 | 582 | 822 | 959 |
| 348 | Telecommunication Systems | 34 | 582 | 288 | 335 |
| 348 | Numerical Analysis | 54 | 582 | 350 | 564 |
| 351 | Discrete Mathematics | 44 | 581 | 4 | 5 |
| 351 | Small Business | 7 | 581 | 425 | 391 |
| 351 | graph | 44 | 581 | 4 | 5 |
| 354 | Genetic therapy | 16 | 580 | 447 | 488 |
| 355 | Structural dynamics | 17 | 575 | 373 | 395 |
| 356 | Molecular evolution | 33 | 571 | 313 | 637 |
| 356 | Ultrasonics | 17 | 571 | 408 | 419 |
| 358 | Entomology | 123 | 560 | 179 | 649 |
| 359 | Regional Planning | 17 | 559 | 556 | 478 |
| 360 | biological monitoring | 17 | 557 | 81 | 95 |
| 361 | Plants | 34 | 545 | 511 | 959 |
| 362 | Meteorology | 19 | 544 | 875 | 1126 |
| 363 | Quantum theory | 36 | 543 | 147 | 239 |
| 364 | Health Policy | 9 | 542 | 1284 | 793 |
| 365 | biological evolution | 26 | 538 | 637 | 1064 |
| 366 | cell physiology | 27 | 535 | 429 | 844 |
| 367 | atmosphere | 17 | 534 | 222 | 221 |
| 368 | Intelligent Transportation Systems | 28 | 516 | 230 | 458 |
| 369 | Library Science | 31 | 511 | 110 | 78 |
| 370 | drug evaluation | 14 | 505 | 529 | 393 |
| 371 | Sonochemistry | 9 | 503 | 253 | 237 |
| 372 | Supramolecular chemistry | 36 | 502 | 5 | 3 |
| 373 | carbon monoxide | 15 | 498 | 42 | 77 |
| 374 | internet | 31 | 497 | 330 | 566 |
| 375 | Soil ecology | 17 | 496 | 200 | 301 |
| 376 | hydrocolloids | 12 | 495 | 264 | 344 |
| 377 | Internet of Things | 28 | 493 | 266 | 444 |
| 378 | Plant Ecology | 17 | 490 | 697 | 876 |
| 379 | Computational Chemistry | 14 | 484 | 186 | 236 |
| 380 | Stochastic Processes | 34 | 477 | 86 | 142 |
| 381 | Endocrinology | 16 | 476 | 1385 | 1694 |
| 382 | gastrointestinal tract | 13 | 474 | 76 | 126 |
| 383 | Geochemistry | 18 | 471 | 889 | 1000 |
| 384 | Embryology | 5 | 469 | 1209 | 885 |
| 384 | Biomolecules | 18 | 469 | 74 | 188 |
| 386 | environmental remediation | 12 | 468 | 52 | 36 |
| 387 | Insects | 106 | 464 | 61 | 467 |
| 388 | Raman spectroscopy | 17 | 463 | 169 | 158 |
| 389 | Medical Technology | 15 | 451 | 601 | 604 |
| 390 | rehabilitation | 20 | 449 | 767 | 949 |
| 391 | Entropy | 28 | 448 | 136 | 142 |
| 392 | Computational Complexity | 51 | 447 | 41 | 111 |
| 393 | Transnational corporations | 31 | 445 | 6 | 47 |
| 394 | Phytochemistry | 11 | 440 | 44 | 32 |
| 394 | Molecular Genetics | 16 | 440 | 753 | 980 |
| 394 | Phytoremediation | 11 | 440 | 44 | 32 |
| 394 | Bioreactors | 11 | 440 | 44 | 32 |
| 398 | Neurotoxicology | 11 | 437 | 184 | 199 |
| 399 | peptides | 22 | 433 | 110 | 141 |
| 399 | Plant cells | 22 | 433 | 402 | 887 |
| 401 | Marine resources | 9 | 430 | 294 | 187 |
| 402 | Cryptography | 51 | 429 | 26 | 79 |
| 402 | Nonlinear systems | 18 | 429 | 136 | 148 |
| 404 | Bacterial infections | 11 | 428 | 336 | 519 |
| 405 | Growth | 4 | 427 | 964 | 762 |
| 405 | optical devices | 23 | 427 | 55 | 80 |
| 407 | Zoology | 30 | 425 | 741 | 901 |
| 408 | Reproduction | 12 | 424 | 1194 | 1022 |
| 409 | Mass Spectrometry | 31 | 418 | 272 | 506 |
| 409 | Aging | 29 | 418 | 859 | 1255 |
| 411 | marketing | 28 | 416 | 509 | 888 |
| 412 | Cell division | 9 | 413 | 135 | 135 |
| 413 | Decision making | 27 | 411 | 313 | 529 |
| 414 | Human-Computer Interaction | 19 | 408 | 447 | 588 |
| 415 | Cell cycle | 11 | 406 | 94 | 82 |
| 415 | cell proliferation | 11 | 406 | 103 | 88 |
| 415 | Meteorites | 6 | 406 | 668 | 610 |
| 418 | Drug targeting | 5 | 404 | 185 | 98 |
| 419 | Natural resources | 9 | 403 | 380 | 322 |
| 420 | enzymes | 25 | 402 | 404 | 734 |
| 421 | Intelligent Control Systems | 12 | 401 | 426 | 164 |
| 422 | Orthopedics | 27 | 395 | 494 | 720 |
| 422 | Microorganisms | 11 | 395 | 476 | 634 |
| 422 | Yeast | 19 | 395 | 79 | 163 |
| 425 | Orthopedic Surgery | 25 | 391 | 176 | 311 |
| 426 | Recombinant DNA | 22 | 390 | 439 | 696 |
| 427 | Environmental Geology | 11 | 387 | 798 | 685 |
| 428 | gene therapy | 10 | 385 | 588 | 665 |
| 429 | Geriatrics | 26 | 384 | 977 | 1323 |
| 430 | Gene expression regulation | 17 | 383 | 326 | 537 |
| 431 | Venture Capital | 4 | 381 | 231 | 277 |
| 431 | innovation | 5 | 381 | 441 | 409 |
| 431 | Fungi | 15 | 381 | 408 | 566 |
| 434 | Cognitive Science | 25 | 379 | 373 | 747 |
| 435 | Biopharmaceutics | 10 | 376 | 538 | 523 |
| 436 | Engineering Mathematics | 27 | 375 | 440 | 558 |
| 437 | Risk Management | 7 | 373 | 409 | 242 |
| 437 | sustainability | 5 | 373 | 658 | 499 |
| 439 | Radiation effects | 6 | 372 | 380 | 261 |
| 440 | Humanities | 24 | 371 | 323 | 273 |
| 440 | Liquid Crystals | 29 | 371 | 213 | 163 |
| 442 | Coastal zone management | 6 | 367 | 431 | 226 |
| 442 | Plant genetic engineering | 13 | 367 | 377 | 499 |
| 444 | Bioremediation | 18 | 364 | 113 | 290 |
| 445 | Health Services Administration | 2 | 360 | 1473 | 417 |
| 446 | international trade | 9 | 359 | 295 | 229 |
| 447 | Eastern Europe | 28 | 357 | 97 | 105 |
| 448 | Agricultural Ecology | 9 | 352 | 558 | 650 |
| 449 | Psychiatry | 15 | 350 | 2032 | 2357 |
| 450 | Cellulose | 11 | 349 | 216 | 237 |
| 450 | natural disasters | 7 | 349 | 798 | 566 |
| 452 | Ceramic materials | 18 | 348 | 451 | 541 |
| 453 | Building Materials | 12 | 347 | 885 | 1073 |
| 454 | Molecular cloning | 17 | 344 | 509 | 711 |
| 454 | biomedicine | 5 | 344 | 386 | 225 |
| 456 | Mechanical Engineering | 20 | 343 | 1004 | 865 |
| 456 | Agriculture | 12 | 343 | 1003 | 1017 |
| 458 | Social policy | 10 | 342 | 444 | 291 |
| 459 | Geography | 17 | 341 | 782 | 998 |
| 460 | Oral Medicine | 23 | 340 | 117 | 128 |
| 461 | X-ray crystallography | 35 | 338 | 90 | 170 |
| 462 | dietary supplements | 20 | 333 | 149 | 319 |
| 463 | Steroids | 6 | 332 | 709 | 489 |
| 464 | Hormones | 7 | 331 | 888 | 752 |
| 464 | cell interaction | 28 | 331 | 186 | 608 |
| 466 | Production Engineering | 11 | 330 | 1037 | 772 |
| 467 | Emerging infectious diseases | 17 | 324 | 58 | 127 |
| 468 | venom | 4 | 322 | 659 | 280 |
| 468 | Toxins | 4 | 322 | 745 | 315 |
| 470 | Immunopathology | 6 | 314 | 956 | 768 |
| 470 | Immunochemistry | 12 | 314 | 414 | 440 |
| 472 | Electrical Engineering | 66 | 313 | 672 | 1236 |
| 473 | Mobile Computing | 22 | 310 | 286 | 482 |
| 474 | Medical innovations | 10 | 309 | 477 | 1057 |
| 475 | Combinatorial optimization | 27 | 307 | 38 | 51 |
| 475 | Adaptive control systems | 22 | 307 | 102 | 141 |
| 477 | Medical genetics | 13 | 306 | 1470 | 2070 |
| 477 | Number Theory | 33 | 306 | 115 | 87 |
| 479 | soil pollution | 14 | 304 | 97 | 141 |
| 480 | Microwaves | 78 | 302 | 182 | 619 |
| 481 | soil conservation | 20 | 301 | 128 | 326 |
| 481 | Genetic recombination | 16 | 301 | 531 | 773 |
| 481 | software | 12 | 301 | 407 | 577 |
| 484 | Health Information Management | 3 | 300 | 297 | 296 |
| 485 | Pesticides | 27 | 299 | 95 | 193 |
| 486 | Waste management | 18 | 298 | 439 | 543 |
| 487 | Corporate governance | 9 | 295 | 192 | 209 |
| 487 | Inflammation | 10 | 295 | 543 | 739 |
| 489 | Electromagnetism | 11 | 294 | 518 | 444 |
| 490 | Neurobiology | 6 | 293 | 1261 | 1266 |
| 490 | Coding Theory | 26 | 293 | 33 | 50 |
| 492 | Hydrocarbons | 16 | 292 | 29 | 29 |
| 492 | artificial cells | 36 | 292 | 3 | 13 |
| 494 | Epidemiology | 18 | 287 | 1570 | 2137 |
| 494 | Solar power plants | 6 | 287 | 113 | 115 |
| 494 | Photovoltaic Cells | 6 | 287 | 113 | 115 |
| 497 | Developed countries | 1 | 286 | 457 | 106 |
| 498 | East Asia | 15 | 285 | 155 | 94 |
| 499 | Technological Innovations | 14 | 282 | 314 | 482 |
| 500 | Systems Analysis | 21 | 281 | 277 | 433 |
| 501 | Metallurgy | 13 | 280 | 1231 | 1257 |
| 502 | blood substitutes | 30 | 279 | 4 | 10 |
| 503 | Lipids | 10 | 278 | 674 | 886 |
| 504 | Combinatorial chemistry | 5 | 277 | 604 | 563 |
| 505 | Radiation | 9 | 276 | 1340 | 1018 |
| 505 | Antioxidants | 6 | 276 | 517 | 631 |
| 507 | Infertility | 6 | 275 | 679 | 712 |
| 507 | fertility | 6 | 275 | 734 | 760 |
| 507 | Economic planning | 6 | 275 | 297 | 187 |
| 510 | toxicity testing | 9 | 273 | 309 | 335 |
| 511 | Hydrology | 20 | 270 | 920 | 1374 |
| 511 | consumer behavior | 8 | 270 | 245 | 301 |
| 513 | Molecular Microbiology | 15 | 269 | 332 | 730 |
| 513 | Cardiovascular system | 6 | 269 | 1141 | 1445 |
| 515 | Diet | 9 | 264 | 1210 | 1561 |
| 516 | mycoses | 2 | 263 | 1042 | 686 |
| 517 | nuclear magnetic resonance | 13 | 262 | 515 | 550 |
| 517 | Phylogeny | 12 | 262 | 343 | 595 |
| 519 | Water Purification | 17 | 261 | 361 | 494 |
| 519 | Cell communication | 16 | 261 | 105 | 370 |
| 521 | Human genetics | 6 | 259 | 1706 | 2728 |
| 522 | Cytogenetics | 5 | 257 | 1208 | 1228 |
| 522 | food contamination | 20 | 257 | 204 | 379 |
| 524 | Ocean Engineering | 13 | 256 | 852 | 997 |
| 525 | Australia | 20 | 252 | 596 | 812 |
| 526 | Therapeutics | 10 | 251 | 948 | 1243 |
| 526 | place marketing | 13 | 251 | 12 | 65 |
| 528 | Flexible manufacturing systems | 6 | 250 | 216 | 156 |
| 529 | Autoantibodies | 6 | 249 | 389 | 392 |
| 529 | histological techniques | 5 | 249 | 550 | 530 |
| 529 | Autoimmunity | 6 | 249 | 517 | 562 |
| 529 | Autoimmune diseases | 6 | 249 | 442 | 436 |
| 533 | behavioral medicine | 4 | 247 | 1135 | 936 |
| 533 | air quality | 3 | 247 | 196 | 49 |
| 533 | analysis | 8 | 247 | 162 | 193 |
| 533 | Mechanics | 8 | 247 | 732 | 481 |
| 533 | Social work | 20 | 247 | 474 | 548 |
| 538 | Hematology | 7 | 245 | 1958 | 1920 |
| 538 | Data Mining | 21 | 245 | 393 | 1026 |
| 540 | biofuels | 6 | 243 | 168 | 260 |
| 541 | ecosystem | 9 | 241 | 732 | 988 |
| 542 | Medical Physics | 13 | 240 | 886 | 1175 |
| 543 | Artificial Organs | 16 | 239 | 232 | 261 |
| 543 | Fertilizers | 3 | 239 | 351 | 186 |
| 543 | United Kingdom | 11 | 239 | 787 | 1078 |
| 546 | air quality management | 14 | 238 | 120 | 266 |
| 547 | Database Management | 9 | 235 | 431 | 455 |
| 547 | Sleep Disorders | 6 | 235 | 1147 | 911 |
| 547 | Sleep | 6 | 235 | 1155 | 924 |
| 550 | Matroids | 17 | 234 | 54 | 95 |
| 551 | planning | 4 | 233 | 609 | 244 |
| 552 | Plant Genetics | 7 | 232 | 407 | 559 |
| 553 | Synthetic biology | 8 | 230 | 168 | 175 |
| 553 | Financial Institutions | 7 | 230 | 185 | 162 |
| 555 | Development | 8 | 224 | 421 | 558 |
| 555 | Cerebral cortex | 4 | 224 | 788 | 698 |
| 557 | Drug discovery | 4 | 223 | 208 | 136 |
| 558 | Industrial Statistics | 14 | 222 | 15 | 18 |
| 559 | Economic Assistance | 6 | 220 | 443 | 521 |
| 560 | Molecular Pharmacology | 11 | 217 | 331 | 624 |
| 561 | visualization | 18 | 215 | 552 | 537 |
| 562 | Developmental Genetics | 1 | 214 | 840 | 583 |
| 562 | viral genetics | 1 | 214 | 527 | 465 |
| 564 | Hypertension | 7 | 213 | 1096 | 1508 |
| 564 | amino acids | 8 | 213 | 252 | 341 |
| 566 | Diabetes | 24 | 212 | 752 | 1798 |
| 567 | Corporate Social Responsibility | 4 | 211 | 186 | 219 |
| 567 | environmental auditing | 4 | 211 | 198 | 221 |
| 569 | pain | 15 | 210 | 559 | 1002 |
| 570 | Biodegradation | 11 | 209 | 225 | 489 |
| 570 | radiative transfer | 2 | 209 | 731 | 275 |
| 572 | Databases | 5 | 208 | 291 | 244 |
| 573 | Microscopy | 10 | 207 | 677 | 710 |
| 574 | Emulsions | 24 | 206 | 47 | 83 |
| 574 | Vocational guidance | 3 | 206 | 851 | 571 |
| 576 | Superconductors | 35 | 205 | 265 | 482 |
| 577 | Plant Biotechnology | 13 | 203 | 305 | 547 |
| 577 | libraries | 10 | 203 | 222 | 196 |
| 579 | Population Genetics | 6 | 202 | 835 | 950 |
| 579 | Molecular ecology | 6 | 202 | 736 | 971 |
| 579 | older people | 6 | 202 | 1138 | 702 |
| 579 | Psychophysiology | 10 | 202 | 1574 | 2080 |
| 583 | Diabetes mellitus | 20 | 200 | 770 | 1771 |
| 584 | Demography | 10 | 198 | 300 | 445 |
| 584 | Food preferences | 2 | 198 | 513 | 282 |
| 586 | Chemical kinetics | 24 | 197 | 109 | 195 |
| 587 | Nuclear Fusion | 13 | 194 | 307 | 324 |
| 588 | Biodiversity | 18 | 192 | 767 | 1572 |
| 589 | Magnetic Resonance Spectroscopy | 11 | 191 | 608 | 665 |
| 590 | Green Technology | 14 | 190 | 48 | 131 |
| 591 | Fuzzy Logic | 3 | 189 | 47 | 28 |
| 591 | Fuzzy Sets | 3 | 189 | 47 | 28 |
| 591 | Fuzzy algorithms | 3 | 189 | 47 | 28 |
| 594 | Technology Assessment | 6 | 188 | 175 | 289 |
| 594 | Extreme environments | 3 | 188 | 223 | 168 |
| 596 | Pharmacogenetics | 5 | 185 | 784 | 795 |
| 597 | Engineering Geology | 2 | 184 | 1698 | 996 |
| 597 | Soil biology | 5 | 184 | 704 | 873 |
| 599 | Gerontology | 12 | 181 | 979 | 1094 |
| 600 | Ecological Engineering | 9 | 180 | 270 | 545 |
| 600 | world | 4 | 180 | 621 | 695 |
| 602 | Information Retrieval | 5 | 179 | 338 | 317 |
| 603 | Respiration | 8 | 176 | 946 | 1163 |
| 604 | Multivariate Analysis | 11 | 175 | 200 | 277 |
| 605 | Social Psychology | 14 | 173 | 925 | 1502 |
| 605 | Quantum Communication | 4 | 173 | 162 | 162 |
| 605 | Enzyme | 9 | 173 | 207 | 439 |
| 608 | Anatomy | 8 | 172 | 1195 | 1418 |
| 608 | Particle Physics | 4 | 172 | 170 | 202 |
| 608 | Parasitology | 8 | 172 | 1467 | 1500 |
| 608 | Parasitic Diseases | 8 | 172 | 1255 | 1453 |
| 612 | Microbial Metabolism | 5 | 170 | 86 | 129 |
| 612 | Cheminformatics | 3 | 170 | 350 | 330 |
| 614 | Psychoneuroimmunology | 5 | 167 | 476 | 675 |
| 614 | Molecular recognition | 6 | 167 | 83 | 112 |
| 614 | Neuroimmunology | 5 | 167 | 534 | 730 |
| 614 | Population | 9 | 167 | 440 | 641 |
| 618 | Metabolic diseases | 9 | 166 | 1379 | 2201 |
| 619 | hazard mitigation | 5 | 165 | 678 | 623 |
| 620 | Cognitive neuroscience | 9 | 164 | 540 | 836 |
| 620 | Superconductivity | 24 | 164 | 101 | 260 |
| 622 | Urban Economics | 5 | 163 | 233 | 301 |
| 623 | Infections | 6 | 162 | 846 | 1127 |
| 623 | Alzheimer's disease | 1 | 162 | 2247 | 907 |
| 625 | Strategic planning | 8 | 161 | 369 | 504 |
| 626 | Educational Technology | 2 | 160 | 1912 | 992 |
| 626 | Anxiety Disorders | 3 | 160 | 521 | 588 |
| 626 | Anxiety | 3 | 160 | 520 | 587 |
| 626 | Respiratory system | 5 | 160 | 462 | 471 |
| 630 | Depression | 1 | 159 | 658 | 441 |
| 630 | Biological Systems | 7 | 159 | 273 | 391 |
| 630 | Socioeconomic Factors | 10 | 159 | 327 | 542 |
| 630 | Futures | 5 | 159 | 236 | 172 |
| 630 | Elementary particles | 1 | 159 | 278 | 197 |
| 635 | Neurons | 2 | 157 | 774 | 1097 |
| 636 | Oceanography | 11 | 156 | 945 | 1344 |
| 636 | urban population | 2 | 156 | 287 | 242 |
| 638 | Clinical Immunology | 5 | 155 | 929 | 965 |
| 638 | Enteral nutrition | 3 | 155 | 861 | 773 |
| 638 | Parenteral nutrition | 3 | 155 | 1030 | 897 |
| 638 | Memory | 7 | 155 | 1233 | 1493 |
| 642 | Harmonic Analysis | 12 | 154 | 39 | 110 |
| 643 | Land use | 15 | 153 | 351 | 898 |
| 643 | Neuroplasticity | 7 | 153 | 85 | 178 |
| 643 | human development | 7 | 153 | 478 | 631 |
| 646 | Microstructure | 16 | 152 | 194 | 341 |
| 647 | Soviet Union | 22 | 151 | 119 | 173 |
| 648 | infection | 7 | 149 | 1182 | 1471 |
| 648 | educational innovations | 1 | 149 | 922 | 326 |
| 650 | Software Engineering | 10 | 145 | 537 | 694 |
| 651 | Leukemia | 7 | 144 | 763 | 1062 |
| 652 | Crystallization | 28 | 142 | 62 | 233 |
| 653 | Computational Intelligence | 14 | 141 | 172 | 374 |
| 653 | glycoproteins | 11 | 141 | 177 | 428 |
| 653 | Glycoconjugates | 11 | 141 | 177 | 428 |
| 653 | Nonprofit organizations | 4 | 141 | 251 | 209 |
| 653 | DNA polymerases | 4 | 141 | 391 | 783 |
| 653 | glycolipids | 11 | 141 | 177 | 428 |
| 659 | community development | 7 | 139 | 322 | 380 |
| 659 | Immunogenetics | 4 | 139 | 639 | 565 |
| 661 | Urban Planning | 6 | 138 | 216 | 325 |
| 661 | Chemical Ecology | 5 | 138 | 381 | 478 |
| 661 | Heat Exchangers | 3 | 138 | 1316 | 1152 |
| 661 | Housing | 6 | 138 | 296 | 377 |
| 661 | RNA | 5 | 138 | 385 | 526 |
| 666 | big data | 10 | 137 | 170 | 389 |
| 667 | Geomorphology | 5 | 136 | 1097 | 1270 |
| 667 | Cosmology | 14 | 136 | 210 | 445 |
| 667 | Adolescent | 12 | 136 | 1008 | 1498 |
| 667 | Fluorescence | 13 | 136 | 72 | 180 |
| 671 | Structural biology | 1 | 135 | 170 | 50 |
| 671 | Chemical processes | 5 | 135 | 470 | 367 |
| 673 | Ergonomics | 3 | 134 | 1047 | 667 |
| 673 | Learning | 2 | 134 | 1454 | 1022 |
| 673 | pheromones | 4 | 134 | 403 | 449 |
| 676 | Urban Policy | 7 | 133 | 459 | 666 |
| 676 | preimplantation genetic diagnosis | 2 | 133 | 620 | 333 |
| 676 | embryo transfer | 2 | 133 | 643 | 351 |
| 679 | Smart Materials | 4 | 132 | 821 | 660 |
| 680 | Political Science | 10 | 131 | 906 | 929 |
| 681 | Tissue Engineering | 6 | 128 | 189 | 286 |
| 681 | Child welfare | 10 | 128 | 506 | 738 |
| 683 | Invertebrates | 3 | 127 | 616 | 428 |
| 684 | Food Science | 5 | 126 | 92 | 67 |
| 684 | Water quality | 5 | 126 | 90 | 104 |
| 684 | Mitochondria | 4 | 126 | 194 | 254 |
| 684 | Bacteria | 6 | 126 | 193 | 434 |
| 684 | Water chemistry | 5 | 126 | 145 | 154 |
| 689 | Securities | 8 | 125 | 101 | 281 |
| 690 | Enzyme inhibitors | 9 | 124 | 144 | 273 |
| 690 | Chemical structure | 15 | 124 | 89 | 198 |
| 692 | Public Administration | 10 | 123 | 671 | 825 |
| 692 | nuclear magnetic resonance spectroscopy | 8 | 123 | 419 | 490 |
| 692 | Cell metabolism | 6 | 123 | 429 | 1100 |
| 692 | Bacterial diseases | 11 | 123 | 47 | 255 |
| 696 | Cloud Computing | 8 | 122 | 126 | 275 |
| 696 | Vaccines | 10 | 122 | 1078 | 1710 |
| 698 | Hospitality industry | 12 | 121 | 96 | 268 |
| 699 | Insect biochemistry | 11 | 119 | 185 | 444 |
| 700 | Traffic Engineering | 1 | 118 | 748 | 404 |
| 700 | stocks | 6 | 118 | 36 | 152 |
| 702 | brain mapping | 5 | 117 | 519 | 730 |
| 703 | Structural design | 3 | 116 | 883 | 632 |
| 704 | vitamin C | 3 | 113 | 425 | 477 |
| 704 | Minerals | 4 | 113 | 650 | 601 |
| 704 | vitamin E | 3 | 113 | 425 | 477 |
| 707 | nuclear astrophysics | 10 | 112 | 207 | 400 |
| 707 | Plant breeding | 7 | 112 | 484 | 704 |
| 707 | transport vesicles | 3 | 112 | 246 | 499 |
| 710 | Computer Engineering | 14 | 111 | 287 | 647 |
| 710 | Sustainable agriculture | 5 | 111 | 536 | 635 |
| 712 | Environmental Geochemistry | 3 | 110 | 537 | 380 |
| 713 | Remote Sensing | 6 | 109 | 1118 | 965 |
| 713 | soil management | 1 | 109 | 971 | 647 |
| 713 | Energy Consumption | 2 | 109 | 525 | 475 |
| 713 | agricultural productivity | 2 | 109 | 97 | 51 |
| 713 | tillage | 1 | 109 | 755 | 557 |
| 718 | Clinical Biochemistry | 5 | 108 | 972 | 1121 |
| 718 | Cardiovascular diseases | 12 | 108 | 844 | 1432 |
| 718 | drug toxicity | 7 | 108 | 179 | 409 |
| 721 | Evolution | 6 | 107 | 1323 | 1807 |
| 722 | Liquid chromatography | 14 | 106 | 138 | 248 |
| 723 | Nuclear Engineering | 29 | 105 | 526 | 1137 |
| 723 | Simulation Methods | 3 | 105 | 993 | 732 |
| 725 | Ferroelectricity | 19 | 103 | 358 | 663 |
| 725 | Genes | 9 | 103 | 622 | 1082 |
| 727 | Power Electronics | 6 | 102 | 825 | 1136 |
| 727 | Biometrics | 13 | 102 | 490 | 885 |
| 729 | Industrial Safety | 3 | 101 | 1240 | 1017 |
| 729 | infrared radiation | 35 | 101 | 53 | 375 |
| 729 | Alternative Medicine | 8 | 101 | 842 | 1403 |
| 729 | Functional foods | 1 | 101 | 741 | 351 |
| 729 | Phytotherapy | 1 | 101 | 1268 | 638 |
| 729 | DNA | 7 | 101 | 325 | 523 |
| 735 | Industrial Organization | 5 | 100 | 198 | 252 |
| 735 | Schizophrenia | 1 | 100 | 1536 | 1139 |
| 735 | Molecules | 13 | 100 | 711 | 1100 |
| 738 | Obstetrics | 8 | 99 | 1629 | 2139 |
| 739 | Measurement | 13 | 96 | 563 | 1148 |
| 739 | Carbohydrates | 9 | 96 | 190 | 522 |
| 741 | Biogeography | 4 | 95 | 808 | 1193 |
| 742 | Pediatric Neurology | 2 | 94 | 1210 | 1458 |
| 742 | Computer-Aided Design | 3 | 94 | 1316 | 1079 |
| 742 | Swarm Intelligence | 5 | 94 | 166 | 306 |
| 742 | Child psychology | 3 | 94 | 1406 | 1524 |
| 746 | Industrial Policy | 5 | 93 | 337 | 448 |
| 746 | Communication | 8 | 93 | 1215 | 1764 |
| 746 | Mental illness | 3 | 93 | 1990 | 2189 |
| 749 | Petroleum Engineering | 1 | 91 | 1337 | 728 |
| 749 | Photography | 165 | 91 | 142 | 536 |
| 749 | Child Development | 6 | 91 | 1359 | 1937 |
| 752 | Apoptosis | 5 | 90 | 146 | 288 |
| 752 | neurotoxins | 5 | 90 | 146 | 288 |
| 752 | Neurotoxic agents | 5 | 90 | 146 | 288 |
| 752 | Flexible electronics | 3 | 90 | 76 | 122 |
| 752 | Nerve regeneration | 5 | 90 | 146 | 288 |
| 757 | DNS | 6 | 89 | 307 | 570 |
| 757 | Radio | 6 | 89 | 1184 | 1569 |
| 759 | Mass Media | 1 | 88 | 1270 | 390 |
| 759 | Obesity | 8 | 88 | 1266 | 2299 |
| 759 | information policy | 1 | 88 | 104 | 31 |
| 759 | India | 3 | 88 | 1542 | 635 |
| 763 | Imaging systems | 11 | 87 | 280 | 491 |
| 764 | Critical Care | 3 | 86 | 1502 | 1975 |
| 764 | Critical Care Medicine | 3 | 86 | 1472 | 1961 |
| 764 | Antibacterial agents | 3 | 86 | 731 | 887 |
| 764 | Oligosaccharide | 7 | 86 | 156 | 444 |
| 768 | Quality of life | 8 | 85 | 884 | 1707 |
| 769 | Thin Films | 6 | 84 | 349 | 413 |
| 769 | Financial management | 4 | 84 | 420 | 626 |
| 771 | Bioenergetics | 4 | 83 | 728 | 992 |
| 771 | Regeneration | 7 | 83 | 20 | 43 |
| 771 | Biogeochemistry | 2 | 83 | 1313 | 1368 |
| 771 | Pancreatic diseases | 3 | 83 | 403 | 364 |
| 775 | plant communities | 9 | 82 | 600 | 1309 |
| 776 | Tribology | 5 | 81 | 1017 | 1177 |
| 776 | Human Geography | 6 | 81 | 688 | 896 |
| 776 | Hematopoietic stem cell transplantation | 3 | 81 | 474 | 645 |
| 776 | Risk assessment | 3 | 81 | 668 | 535 |
| 776 | drug development | 4 | 81 | 925 | 1734 |
| 781 | Ecosystem management | 3 | 80 | 703 | 735 |
| 781 | personality | 6 | 80 | 977 | 1556 |
| 781 | Algal blooms | 1 | 80 | 522 | 409 |
| 781 | Cyanobacteria | 1 | 80 | 522 | 409 |
| 781 | Breeding | 5 | 80 | 935 | 1261 |
| 781 | microalgae | 1 | 80 | 522 | 409 |
| 787 | Horticulture | 3 | 79 | 803 | 699 |
| 788 | Probability | 6 | 78 | 379 | 606 |
| 788 | Food Preservation | 3 | 78 | 809 | 599 |
| 790 | animals | 15 | 77 | 454 | 1054 |
| 791 | Reproductive health | 1 | 76 | 1488 | 886 |
| 791 | Approximation Theory | 8 | 76 | 220 | 277 |
| 793 | Surgery | 7 | 74 | 1270 | 2321 |
| 793 | Porous materials | 7 | 74 | 419 | 655 |
| 793 | economic conditions | 4 | 74 | 431 | 543 |
| 793 | Capitalism | 8 | 74 | 46 | 139 |
| 797 | Visual Communication | 6 | 73 | 246 | 392 |
| 797 | Philosophy of Mind | 2 | 73 | 313 | 224 |
| 797 | Image enhancement | 6 | 73 | 183 | 359 |
| 797 | Optoelectronic devices | 10 | 73 | 422 | 651 |
| 797 | Metallography | 2 | 73 | 1094 | 914 |
| 797 | Bones | 1 | 73 | 1310 | 1124 |
| 797 | Bone marrow | 1 | 73 | 6 | 8 |
| 804 | moral development | 1 | 72 | 252 | 142 |
| 804 | Algae | 4 | 72 | 642 | 818 |
| 804 | Autonomous robots | 1 | 72 | 361 | 281 |
| 807 | Medical Anthropology | 1 | 71 | 2067 | 1742 |
| 807 | Biomass | 4 | 71 | 590 | 1014 |
| 807 | economic development projects | 2 | 71 | 239 | 190 |
| 810 | Geology | 8 | 70 | 1948 | 2719 |
| 810 | Planets | 3 | 70 | 1462 | 1875 |
| 812 | Granular materials | 1 | 69 | 1114 | 722 |
| 813 | preventive medicine | 5 | 68 | 942 | 1538 |
| 813 | Kidney diseases | 5 | 68 | 814 | 1168 |
| 815 | Algorithms | 5 | 67 | 512 | 593 |
| 815 | Hydrodynamics | 4 | 67 | 526 | 704 |
| 815 | Plant tissue culture | 5 | 67 | 546 | 878 |
| 815 | Plant cell culture | 5 | 67 | 479 | 868 |
| 819 | Serology | 5 | 66 | 320 | 576 |
| 819 | Animal Behavior | 2 | 66 | 2160 | 2270 |
| 819 | Child | 7 | 66 | 1618 | 2494 |
| 819 | Happiness | 5 | 66 | 263 | 555 |
| 819 | Celestial Mechanics | 5 | 66 | 135 | 181 |
| 819 | clay | 2 | 66 | 979 | 1098 |
| 819 | Transplantation | 6 | 66 | 812 | 1427 |
| 826 | Radiobiology | 4 | 65 | 1288 | 1716 |
| 826 | Flood forecasting | 1 | 65 | 270 | 143 |
| 826 | Flood control | 1 | 65 | 590 | 241 |
| 826 | Southeast Asia | 28 | 65 | 31 | 249 |
| 826 | Egypt | 8 | 65 | 204 | 698 |
| 831 | Climatology | 3 | 64 | 1731 | 2011 |
| 831 | Homeostasis | 3 | 64 | 455 | 1168 |
| 831 | foreign exchange | 7 | 64 | 181 | 478 |
| 834 | complementary therapies | 4 | 63 | 1470 | 1874 |
| 834 | ports | 3 | 63 | 209 | 255 |
| 836 | Pregnancy | 3 | 62 | 950 | 1005 |
| 837 | Lipid metabolism | 3 | 61 | 433 | 684 |
| 837 | Quality Assurance | 8 | 61 | 141 | 352 |
| 837 | Cosmochemistry | 5 | 61 | 726 | 1154 |
| 837 | Electrophysiology | 7 | 61 | 731 | 1152 |
| 837 | Lipid | 3 | 61 | 434 | 686 |
| 837 | Sales management | 3 | 61 | 225 | 442 |
| 837 | selling | 3 | 61 | 225 | 442 |
| 844 | Urology | 5 | 60 | 1437 | 2055 |
| 844 | Comparative Education | 1 | 60 | 444 | 175 |
| 846 | Metabolic syndrome | 7 | 59 | 96 | 321 |
| 846 | microwave communication systems | 2 | 59 | 514 | 458 |
| 846 | Transgenic plants | 3 | 59 | 495 | 770 |
| 846 | Microwave devices | 2 | 59 | 633 | 533 |
| 850 | Cost effectiveness | 1 | 58 | 179 | 97 |
| 851 | Architecture | 1 | 57 | 899 | 416 |
| 851 | Geographic information systems | 5 | 57 | 854 | 1096 |
| 851 | construction | 1 | 57 | 373 | 279 |
| 854 | Astrocytes | 1 | 55 | 765 | 858 |
| 854 | Oligosaccharides | 4 | 55 | 194 | 379 |
| 854 | vascular diseases | 4 | 55 | 629 | 1072 |
| 854 | North America | 8 | 55 | 452 | 918 |
| 854 | food industry | 11 | 55 | 237 | 741 |
| 859 | Fluid Mechanics | 4 | 54 | 1432 | 1654 |
| 859 | poverty | 3 | 54 | 391 | 544 |
| 859 | drug resistance | 4 | 54 | 654 | 1126 |
| 859 | Family | 7 | 54 | 570 | 1060 |
| 863 | Microbial Genetics | 5 | 53 | 229 | 505 |
| 863 | Sedimentology | 4 | 53 | 521 | 828 |
| 865 | healthcare disparities | 2 | 52 | 651 | 650 |
| 865 | micromechanics | 4 | 52 | 528 | 786 |
| 865 | food handling | 6 | 52 | 564 | 1400 |
| 868 | Development Economics | 6 | 51 | 223 | 520 |
| 868 | Calorimetry | 4 | 51 | 1060 | 1317 |
| 868 | consumers | 2 | 51 | 461 | 487 |
| 868 | infrared technology | 14 | 51 | 50 | 135 |
| 868 | Thermal analysis | 4 | 51 | 1060 | 1317 |
| 873 | Paleontology | 4 | 50 | 1136 | 1332 |
| 873 | Social welfare | 1 | 50 | 1063 | 627 |
| 873 | phytopathogenic bacteria | 2 | 50 | 331 | 457 |
| 873 | land degradation | 10 | 50 | 136 | 780 |
| 873 | Paleopathology | 4 | 50 | 259 | 300 |
| 873 | Vision | 2 | 50 | 775 | 929 |
| 873 | Electromagnetic fields | 6 | 50 | 179 | 180 |
| 873 | degradation | 10 | 50 | 136 | 780 |
| 881 | Biochemical Genetics | 6 | 49 | 240 | 363 |
| 881 | Statistical Mechanics | 5 | 49 | 497 | 628 |
| 881 | Pesticide residues | 4 | 49 | 38 | 173 |
| 881 | Forest genetics | 3 | 49 | 293 | 337 |
| 885 | Acoustics | 7 | 48 | 228 | 334 |
| 885 | Terahertz Technology | 6 | 48 | 84 | 252 |
| 885 | Risk | 2 | 48 | 707 | 801 |
| 885 | Gastrointestinal diseases | 10 | 48 | 260 | 875 |
| 889 | Logic | 5 | 47 | 331 | 351 |
| 889 | Ceramics | 5 | 47 | 1319 | 1726 |
| 889 | economic indicators | 12 | 47 | 21 | 119 |
| 889 | Knowledge management | 13 | 47 | 41 | 389 |
| 889 | Sound | 5 | 47 | 906 | 1184 |
| 889 | Mesoporous materials | 4 | 47 | 73 | 172 |
| 889 | reasoning | 5 | 47 | 237 | 461 |
| 896 | Nuclear Energy | 20 | 46 | 381 | 1074 |
| 896 | Topology | 2 | 46 | 344 | 231 |
| 896 | Psychopharmacology | 1 | 46 | 2365 | 2138 |
| 896 | Cost of illness | 3 | 46 | 46 | 59 |
| 896 | Biomechanics | 8 | 46 | 780 | 1780 |
| 896 | monoclonal antibodies | 2 | 46 | 453 | 453 |
| 896 | Biodiversity conservation | 4 | 46 | 1474 | 2467 |
| 896 | disease vectors | 2 | 46 | 1203 | 1375 |
| 896 | Parasites | 2 | 46 | 1947 | 1948 |
| 905 | Linguistics | 11 | 45 | 584 | 1228 |
| 905 | indoor air pollution | 4 | 45 | 313 | 632 |
| 905 | aquatic insects | 7 | 45 | 24 | 43 |
| 905 | Ventilation | 4 | 45 | 436 | 755 |
| 905 | Sick building syndrome | 4 | 45 | 313 | 632 |
| 910 | Andrology | 2 | 44 | 787 | 866 |
| 910 | Forecasting | 3 | 44 | 551 | 718 |
| 910 | Heart Failure | 1 | 44 | 673 | 743 |
| 913 | Ecological Genetics | 1 | 43 | 1135 | 770 |
| 913 | Ecophysiology | 1 | 43 | 449 | 357 |
| 913 | Human Resources | 3 | 43 | 436 | 839 |
| 913 | immunoassay | 3 | 43 | 191 | 199 |
| 913 | health services | 4 | 43 | 976 | 1490 |
| 918 | Project Management | 2 | 42 | 344 | 635 |
| 918 | Mental Health Services | 1 | 42 | 2121 | 1682 |
| 918 | Regional Development | 2 | 42 | 342 | 399 |
| 918 | Development planning | 2 | 42 | 298 | 370 |
| 918 | Glass | 4 | 42 | 1064 | 1558 |
| 918 | arthritis | 2 | 42 | 1414 | 1935 |
| 918 | pottery | 4 | 42 | 1023 | 1525 |
| 918 | Muscles | 4 | 42 | 781 | 1378 |
| 918 | herbicides | 2 | 42 | 325 | 369 |
| 927 | Civil Engineering | 4 | 41 | 1442 | 1445 |
| 927 | epilepsy | 2 | 41 | 1227 | 1318 |
| 927 | Diagnosis | 5 | 41 | 285 | 590 |
| 927 | Bifurcation Theory | 1 | 41 | 499 | 322 |
| 927 | Database Security | 5 | 41 | 33 | 103 |
| 927 | Interfaces | 2 | 41 | 458 | 430 |
| 927 | Sales Promotion | 1 | 41 | 254 | 127 |
| 934 | Structural Engineering | 3 | 40 | 1668 | 1901 |
| 934 | Crime prevention | 9 | 40 | 101 | 279 |
| 934 | Organizational learning | 9 | 40 | 98 | 506 |
| 934 | Queuing Theory | 2 | 40 | 205 | 201 |
| 934 | machinery | 1 | 40 | 1349 | 977 |
| 939 | Ultrasonic Imaging | 5 | 39 | 383 | 809 |
| 939 | data protection | 8 | 39 | 240 | 679 |
| 941 | Applied Linguistics | 3 | 38 | 543 | 613 |
| 941 | Elderly | 3 | 38 | 1279 | 1102 |
| 941 | Consumer education | 2 | 38 | 450 | 665 |
| 941 | alcoholism | 2 | 38 | 1752 | 2063 |
| 941 | Ultrasound | 4 | 38 | 675 | 1153 |
| 946 | Pediatrics | 3 | 37 | 2515 | 3597 |
| 946 | DNA methylation | 2 | 37 | 379 | 668 |
| 946 | water supply | 1 | 37 | 1511 | 1495 |
| 946 | International Business | 3 | 37 | 118 | 229 |
| 946 | biological invasions | 1 | 37 | 1031 | 973 |
| 951 | Biomarkers | 4 | 36 | 355 | 694 |
| 951 | eye | 1 | 36 | 391 | 547 |
| 951 | biochemical markers | 4 | 36 | 570 | 1067 |
| 954 | Psycholinguistics | 2 | 35 | 1075 | 1279 |
| 954 | Histochemistry | 4 | 35 | 904 | 1432 |
| 954 | Neurolinguistics | 2 | 35 | 536 | 731 |
| 954 | Organizational Behavior | 1 | 35 | 849 | 883 |
| 954 | Total Quality Management | 2 | 35 | 719 | 890 |
| 954 | Visual Perception | 6 | 35 | 1216 | 2485 |
| 954 | isomerism | 3 | 35 | 314 | 458 |
| 954 | Chirality | 3 | 35 | 314 | 458 |
| 954 | Aquatic ecology | 5 | 35 | 723 | 1307 |
| 963 | Computer Architecture | 7 | 34 | 329 | 646 |
| 963 | Hydraulic Engineering | 4 | 34 | 852 | 1286 |
| 963 | Marine Biotechnology | 2 | 34 | 295 | 507 |
| 963 | Genetic testing | 3 | 34 | 347 | 485 |
| 963 | data collection | 10 | 34 | 499 | 1926 |
| 963 | Auditing | 4 | 34 | 311 | 553 |
| 963 | concrete | 2 | 34 | 1168 | 1541 |
| 970 | Nuclear Medicine | 1 | 33 | 1627 | 1407 |
| 970 | health services accessibility | 2 | 33 | 1279 | 1434 |
| 970 | Molecular Imaging | 1 | 33 | 1102 | 1150 |
| 970 | Developmental Immunology | 6 | 33 | 385 | 1090 |
| 970 | Antigens | 1 | 33 | 1445 | 1377 |
| 970 | Money | 3 | 33 | 358 | 628 |
| 970 | Cognition | 3 | 33 | 1636 | 2231 |
| 977 | Archaeology | 7 | 32 | 838 | 1444 |
| 977 | Marine Ecology | 3 | 32 | 777 | 1126 |
| 977 | Clinical Pharmacology | 4 | 32 | 1300 | 2213 |
| 977 | Ethnic relations | 3 | 32 | 573 | 630 |
| 977 | Ethnic Conflict | 3 | 32 | 255 | 434 |
| 977 | Mortgages | 2 | 32 | 259 | 345 |
| 977 | forced migration | 3 | 32 | 255 | 434 |
| 977 | Social behavior | 5 | 32 | 865 | 1718 |
| 977 | Convergence | 1 | 32 | 124 | 202 |
| 977 | gene transfer | 2 | 32 | 369 | 534 |
| 977 | race relations | 3 | 32 | 582 | 737 |
| 977 | genetic transformation | 2 | 32 | 369 | 534 |
| 989 | Game Theory | 6 | 30 | 355 | 660 |
| 989 | Plant Morphology | 2 | 30 | 723 | 900 |
| 989 | Acoustic holography | 4 | 30 | 74 | 31 |
| 989 | water resources | 3 | 30 | 212 | 258 |
| 989 | Holography | 4 | 30 | 74 | 31 |
| 989 | Acoustic imaging | 4 | 30 | 74 | 31 |
| 989 | economic analysis | 6 | 30 | 121 | 432 |
| 989 | ethanol | 1 | 30 | 899 | 827 |
| 989 | World Wide Web | 10 | 30 | 121 | 554 |
| 989 | eugenics | 1 | 30 | 1081 | 1004 |
| 999 | Radio frequency | 3 | 29 | 495 | 824 |
| 1000 | Education | 6 | 28 | 2477 | 3875 |