| 1 | Chemistry | 4,718 | 335.7K | 31 | 36 |
| 2 | Physics | 2,975 | 168.7K | 115 | 178 |
| 3 | Biology | 2,376 | 165.1K | 98 | 159 |
| 4 | Science | 2,869 | 153.0K | 79 | 171 |
| 5 | Medicine | 3,276 | 127.4K | 63 | 116 |
| 6 | Molecular Biology | 2,757 | 126.7K | 38 | 99 |
| 7 | Materials | 2,070 | 122.8K | 55 | 50 |
| 8 | Nanotechnology | 2,066 | 114.4K | 26 | 35 |
| 9 | Biocompatible Materials | 1,623 | 90.1K | 11 | 14 |
| 10 | Biochemistry | 2,659 | 89.6K | 97 | 152 |
| 11 | Cancer | 1,845 | 81.1K | 4 | 11 |
| 12 | Pollution | 1,414 | 77.4K | 13 | 26 |
| 13 | Research | 2,248 | 73.6K | 58 | 89 |
| 14 | Materials Science | 1,180 | 63.9K | 47 | 50 |
| 15 | Cytology | 1,099 | 62.6K | 51 | 105 |
| 16 | Environmental Health | 1,292 | 60.5K | 18 | 36 |
| 17 | Ecology | 1,170 | 57.0K | 84 | 153 |
| 18 | Catalysis | 929 | 52.7K | 37 | 40 |
| 19 | Chemical Engineering | 1,094 | 51.7K | 41 | 43 |
| 20 | Cell Biology | 855 | 50.2K | 59 | 126 |
| 21 | Microbiology | 1,156 | 46.4K | 96 | 193 |
| 22 | Analytical Chemistry | 1,100 | 45.5K | 20 | 16 |
| 23 | Optical materials | 770 | 45.0K | 18 | 17 |
| 24 | Biotechnology | 901 | 43.5K | 62 | 98 |
| 25 | nanoscience | 699 | 41.8K | 22 | 37 |
| 26 | environmental pollution | 830 | 39.8K | 15 | 15 |
| 27 | Environmental Engineering | 602 | 39.7K | 35 | 34 |
| 28 | Pharmacology | 1,397 | 38.5K | 37 | 70 |
| 29 | Oncology | 722 | 38.0K | 5 | 18 |
| 30 | Nanostructured Materials | 744 | 38.0K | 28 | 29 |
| 31 | Astronomy | 552 | 35.4K | 223 | 227 |
| 32 | Astrophysics | 759 | 34.5K | 204 | 304 |
| 33 | Environment | 638 | 33.5K | 80 | 153 |
| 34 | Biophysics | 1,068 | 33.0K | 87 | 116 |
| 35 | Polymers | 1,071 | 32.7K | 53 | 82 |
| 36 | Natural history | 127 | 32.6K | 348 | 331 |
| 37 | Virology | 449 | 31.4K | 90 | 135 |
| 38 | Signal Processing | 868 | 31.2K | 15 | 39 |
| 39 | Biochemical Engineering | 713 | 30.8K | 30 | 71 |
| 40 | Bioengineering | 576 | 29.2K | 57 | 107 |
| 41 | Environmental monitoring | 573 | 28.6K | 10 | 9 |
| 42 | Neurology | 864 | 28.5K | 175 | 298 |
| 43 | Nuclear Physics | 1,610 | 28.2K | 117 | 292 |
| 44 | polymerization | 886 | 28.0K | 44 | 58 |
| 45 | Water pollution | 414 | 28.0K | 18 | 14 |
| 46 | Cell death | 546 | 27.9K | 3 | 5 |
| 47 | Water | 390 | 26.9K | 27 | 27 |
| 48 | sanitation | 327 | 26.3K | 26 | 34 |
| 49 | Artificial Intelligence | 681 | 26.0K | 20 | 60 |
| 50 | China | 1,346 | 25.4K | 11 | 10 |
| 51 | Tourism | 496 | 25.1K | 5 | 11 |
| 52 | Image Processing | 688 | 24.1K | 10 | 25 |
| 53 | Geophysics | 950 | 23.2K | 70 | 145 |
| 54 | management | 388 | 21.6K | 55 | 132 |
| 55 | Biomedical Engineering | 762 | 20.8K | 47 | 100 |
| 56 | Immunology | 540 | 20.6K | 99 | 163 |
| 57 | nucleic acids | 184 | 20.2K | 68 | 70 |
| 58 | Medical Oncology | 440 | 20.0K | 24 | 27 |
| 59 | Pharmaceutical Chemistry | 545 | 20.0K | 42 | 75 |
| 60 | Earth Sciences | 445 | 19.0K | 32 | 65 |
| 61 | Optics | 895 | 18.7K | 90 | 100 |
| 62 | Signal Transduction | 323 | 18.4K | 5 | 9 |
| 63 | Nutrition | 522 | 18.3K | 60 | 113 |
| 64 | Oncogenes | 259 | 18.3K | 7 | 13 |
| 65 | environmental protection | 445 | 18.0K | 11 | 16 |
| 66 | Environmental Policy | 338 | 17.6K | 28 | 58 |
| 67 | Meteorology | 681 | 17.1K | 30 | 102 |
| 68 | Human genetics | 126 | 16.9K | 217 | 271 |
| 69 | miniaturization | 226 | 16.8K | 55 | 63 |
| 70 | Climatology | 591 | 16.4K | 11 | 51 |
| 71 | Energy Conversion | 135 | 16.3K | 59 | 46 |
| 72 | Public Health | 429 | 16.0K | 215 | 231 |
| 73 | Microelectronics | 213 | 16.0K | 66 | 59 |
| 74 | Genetics | 394 | 15.4K | 139 | 242 |
| 75 | Liver diseases | 285 | 15.2K | 22 | 58 |
| 76 | Toxicology | 572 | 15.1K | 62 | 122 |
| 77 | Mathematics | 1,277 | 15.1K | 69 | 120 |
| 78 | Photonics | 447 | 15.1K | 26 | 60 |
| 79 | Electrochemistry | 425 | 15.0K | 159 | 92 |
| 80 | Nanoparticles | 293 | 14.6K | 25 | 23 |
| 81 | Telecommunication | 304 | 13.4K | 86 | 104 |
| 82 | Clinical Chemistry | 354 | 13.3K | 45 | 58 |
| 83 | Composite Materials | 234 | 13.3K | 122 | 97 |
| 84 | Immunotherapy | 446 | 13.0K | 5 | 48 |
| 85 | Ophthalmology | 576 | 12.9K | 15 | 48 |
| 86 | Cybernetics | 173 | 12.9K | 31 | 19 |
| 87 | Magnetic Materials | 247 | 12.8K | 23 | 8 |
| 88 | Organic Chemistry | 359 | 12.6K | 50 | 69 |
| 89 | Bioinformatics | 256 | 12.5K | 31 | 83 |
| 90 | Microbial Ecology | 181 | 12.5K | 97 | 122 |
| 91 | Nanostructures | 225 | 12.4K | 16 | 46 |
| 92 | Botany | 299 | 12.3K | 258 | 290 |
| 93 | Colloids | 385 | 12.3K | 139 | 182 |
| 94 | Wireless Communication Systems | 460 | 12.2K | 28 | 62 |
| 95 | Cell differentiation | 232 | 11.9K | 51 | 107 |
| 96 | Environmental Chemistry | 98 | 11.9K | 111 | 77 |
| 97 | Bioorganic chemistry | 355 | 11.8K | 25 | 45 |
| 98 | Endocrinology | 289 | 11.8K | 179 | 236 |
| 99 | Solid State Physics | 577 | 11.7K | 201 | 309 |
| 100 | Environmental Management | 280 | 11.4K | 26 | 48 |
| 101 | Atmospheric Physics | 342 | 11.4K | 44 | 87 |
| 102 | Surface Chemistry | 371 | 11.2K | 133 | 180 |
| 103 | Pathology | 284 | 11.0K | 68 | 108 |
| 104 | fuel cells | 145 | 10.9K | 44 | 53 |
| 105 | Quantum Gravity | 592 | 10.5K | 82 | 267 |
| 106 | Computational Biology | 203 | 10.4K | 92 | 130 |
| 107 | Condensed Matter | 500 | 10.3K | 219 | 347 |
| 108 | Immunity | 154 | 10.2K | 131 | 202 |
| 109 | Radio | 204 | 10.2K | 53 | 63 |
| 110 | Renewable Energy Sources | 104 | 10.2K | 187 | 145 |
| 111 | energy conservation | 143 | 10.1K | 79 | 72 |
| 112 | Environmental Law | 169 | 10.1K | 10 | 17 |
| 113 | Electronics | 400 | 10.0K | 113 | 144 |
| 114 | Physiology | 377 | 10.0K | 186 | 309 |
| 115 | Spectrum analysis | 583 | 9.9K | 168 | 471 |
| 116 | Geology | 470 | 9.6K | 92 | 222 |
| 117 | Genomics | 374 | 9.5K | 48 | 118 |
| 118 | Statistical physics | 467 | 9.3K | 156 | 262 |
| 119 | Bioinorganic chemistry | 164 | 9.0K | 18 | 3 |
| 120 | Metabolic diseases | 155 | 8.8K | 175 | 215 |
| 121 | soil microbiology | 162 | 8.8K | 51 | 70 |
| 122 | Crystal growth | 160 | 8.7K | 7 | 3 |
| 123 | Green Chemistry | 194 | 8.6K | 37 | 66 |
| 124 | genome | 115 | 8.4K | 78 | 130 |
| 125 | Diabetes | 215 | 8.4K | 92 | 159 |
| 126 | Metabolism | 227 | 8.4K | 171 | 258 |
| 127 | Aquaculture | 227 | 8.4K | 28 | 25 |
| 128 | internet | 225 | 8.3K | 17 | 23 |
| 129 | Surgery | 85 | 8.3K | 202 | 234 |
| 130 | Automation | 214 | 8.2K | 88 | 160 |
| 131 | Internet of Things | 217 | 8.0K | 16 | 19 |
| 132 | Planets | 360 | 8.0K | 60 | 144 |
| 133 | Asia | 401 | 7.9K | 22 | 21 |
| 134 | Diabetes mellitus | 186 | 7.9K | 88 | 160 |
| 135 | Carbon | 125 | 7.8K | 36 | 51 |
| 136 | free radicals | 131 | 7.7K | 33 | 46 |
| 137 | Neural circuitry | 323 | 7.6K | 22 | 47 |
| 138 | actuators | 201 | 7.6K | 53 | 59 |
| 138 | transducers | 201 | 7.6K | 53 | 59 |
| 140 | Epidemiology | 292 | 7.6K | 156 | 243 |
| 141 | Environmental Toxicology | 270 | 7.4K | 13 | 75 |
| 142 | Food | 165 | 7.3K | 148 | 133 |
| 143 | Intelligent Transportation Systems | 188 | 7.3K | 18 | 25 |
| 144 | Biosensors | 142 | 7.2K | 24 | 27 |
| 145 | Pharmacognosy | 213 | 7.2K | 26 | 32 |
| 146 | Food service management | 105 | 7.2K | 11 | 11 |
| 147 | Multimedia Systems | 300 | 7.2K | 14 | 16 |
| 148 | Biomass Energy | 127 | 7.1K | 123 | 138 |
| 149 | Radio waves | 178 | 7.1K | 28 | 34 |
| 150 | Atmospheric Chemistry | 140 | 7.0K | 80 | 112 |
| 151 | proteins | 157 | 7.0K | 81 | 83 |
| 152 | Information Technology | 134 | 7.0K | 61 | 60 |
| 153 | Environmental pollutants | 257 | 6.9K | 9 | 35 |
| 154 | Psychiatry | 211 | 6.9K | 325 | 428 |
| 155 | biological evolution | 155 | 6.8K | 145 | 233 |
| 156 | Communication | 88 | 6.8K | 202 | 99 |
| 157 | Neurochemistry | 251 | 6.8K | 92 | 194 |
| 158 | Genetic engineering | 219 | 6.7K | 25 | 84 |
| 159 | Hydrology | 219 | 6.7K | 86 | 129 |
| 160 | Medical Laboratory Science | 87 | 6.6K | 164 | 108 |
| 161 | Microorganisms | 196 | 6.5K | 2 | 45 |
| 162 | pollutants | 234 | 6.5K | 8 | 34 |
| 163 | Information Science | 195 | 6.4K | 44 | 78 |
| 164 | computer networks | 248 | 6.4K | 50 | 84 |
| 165 | Stem cells | 225 | 6.4K | 22 | 59 |
| 166 | Technology | 278 | 6.3K | 142 | 215 |
| 167 | Energy Storage | 97 | 6.2K | 54 | 37 |
| 168 | environmental exposure | 238 | 6.2K | 5 | 18 |
| 169 | Geography | 172 | 6.2K | 121 | 124 |
| 170 | Diet | 124 | 6.2K | 155 | 185 |
| 171 | Parasitology | 288 | 6.2K | 26 | 59 |
| 172 | Medical Microbiology | 131 | 6.2K | 160 | 210 |
| 173 | Sustainable Engineering | 146 | 6.1K | 35 | 54 |
| 174 | Medical genetics | 189 | 6.1K | 208 | 336 |
| 175 | Developmental Biology | 93 | 6.0K | 238 | 233 |
| 176 | natural products | 246 | 6.0K | 11 | 37 |
| 177 | Molecular structure | 137 | 5.9K | 92 | 115 |
| 178 | Systems Engineering | 177 | 5.9K | 54 | 50 |
| 179 | Evolutionary Computation | 54 | 5.9K | 21 | 27 |
| 180 | Plant cells | 66 | 5.9K | 175 | 202 |
| 181 | Marine Biology | 183 | 5.8K | 153 | 183 |
| 182 | Diagnostic Imaging | 263 | 5.8K | 31 | 84 |
| 183 | Neurophysiology | 175 | 5.8K | 268 | 382 |
| 184 | Bioelectronics | 106 | 5.8K | 26 | 33 |
| 185 | transport vesicles | 20 | 5.7K | 18 | 182 |
| 186 | Aging | 152 | 5.7K | 215 | 197 |
| 187 | Solid State Chemistry | 176 | 5.7K | 123 | 76 |
| 188 | Organometallic chemistry | 234 | 5.7K | 12 | 11 |
| 189 | Plants | 191 | 5.7K | 68 | 205 |
| 190 | Brain | 172 | 5.7K | 231 | 309 |
| 191 | Radiobiology | 122 | 5.6K | 101 | 89 |
| 192 | Inflammation | 120 | 5.5K | 5 | 12 |
| 193 | Energy Policy | 132 | 5.4K | 140 | 217 |
| 194 | Oxidative stress | 77 | 5.4K | 11 | 16 |
| 195 | Biodiversity conservation | 77 | 5.3K | 164 | 254 |
| 196 | cytokines | 260 | 5.3K | 11 | 21 |
| 197 | Hematology | 212 | 5.3K | 225 | 325 |
| 198 | Genetic algorithms | 35 | 5.3K | 24 | 23 |
| 199 | Environmental Microbiology | 87 | 5.3K | 52 | 82 |
| 200 | Geochemistry | 235 | 5.2K | 110 | 244 |
| 201 | Industrial Microbiology | 112 | 5.2K | 66 | 81 |
| 202 | Reproduction | 193 | 5.2K | 111 | 155 |
| 203 | Immunopharmacology | 257 | 5.1K | 10 | 20 |
| 204 | gene mapping | 176 | 5.1K | 58 | 153 |
| 205 | Oxidation-reduction | 80 | 5.1K | 12 | 29 |
| 206 | Remote Sensing | 182 | 5.0K | 23 | 13 |
| 207 | Molecular evolution | 146 | 5.0K | 47 | 117 |
| 208 | Sustainable Development | 101 | 5.0K | 55 | 86 |
| 209 | Cell metabolism | 44 | 4.9K | 32 | 84 |
| 210 | city planning | 115 | 4.9K | 76 | 64 |
| 211 | viruses | 134 | 4.9K | 103 | 174 |
| 212 | Physical Chemistry | 75 | 4.9K | 328 | 225 |
| 213 | Psychology | 239 | 4.8K | 390 | 518 |
| 214 | energy development | 26 | 4.7K | 99 | 57 |
| 215 | lasers | 221 | 4.7K | 75 | 92 |
| 216 | Climate change | 48 | 4.7K | 131 | 227 |
| 217 | Geriatrics | 149 | 4.7K | 247 | 245 |
| 218 | Interactive multimedia | 128 | 4.7K | 12 | 16 |
| 219 | Eutrophication | 42 | 4.7K | 148 | 225 |
| 220 | multimedia | 127 | 4.7K | 12 | 16 |
| 221 | Engineering | 271 | 4.6K | 141 | 222 |
| 222 | Homeostasis | 31 | 4.6K | 51 | 86 |
| 223 | Transportation | 136 | 4.6K | 111 | 119 |
| 224 | plant molecular biology | 99 | 4.6K | 142 | 235 |
| 225 | Agricultural Chemistry | 122 | 4.6K | 162 | 162 |
| 226 | Cardiovascular system | 68 | 4.6K | 256 | 305 |
| 227 | Oceanography | 270 | 4.5K | 69 | 191 |
| 228 | carcinogens | 104 | 4.5K | 26 | 29 |
| 229 | Computer Vision | 146 | 4.5K | 24 | 103 |
| 230 | Ocean Engineering | 249 | 4.4K | 47 | 112 |
| 231 | Economics | 257 | 4.4K | 305 | 407 |
| 232 | Behavior | 106 | 4.4K | 391 | 462 |
| 233 | atmospheric models | 38 | 4.3K | 117 | 58 |
| 234 | environmental indicators | 94 | 4.3K | 19 | 19 |
| 235 | Emerging infectious diseases | 64 | 4.3K | 7 | 4 |
| 236 | cell interaction | 150 | 4.2K | 4 | 12 |
| 237 | Host-parasite interactions | 66 | 4.2K | 118 | 178 |
| 238 | Hypertension | 113 | 4.1K | 169 | 299 |
| 239 | biological factors | 161 | 4.1K | 18 | 67 |
| 240 | Energy Harvesting | 28 | 4.1K | 70 | 43 |
| 241 | finance | 231 | 4.1K | 46 | 192 |
| 242 | mathematical analysis | 413 | 4.1K | 2 | 62 |
| 243 | Mathematical Physics | 226 | 4.1K | 178 | 275 |
| 244 | Pharmaceutical Technology | 106 | 4.0K | 43 | 48 |
| 245 | Business | 104 | 4.0K | 132 | 297 |
| 246 | Molecular Genetics | 100 | 3.9K | 149 | 228 |
| 247 | Medicinal plants | 143 | 3.9K | 26 | 47 |
| 248 | Mental Disorders | 118 | 3.9K | 282 | 399 |
| 249 | Parallel Processing | 70 | 3.8K | 19 | 14 |
| 250 | atmosphere | 135 | 3.8K | 8 | 12 |
| 251 | Genetic therapy | 126 | 3.8K | 36 | 69 |
| 252 | food technology | 94 | 3.8K | 257 | 220 |
| 253 | Medical innovations | 55 | 3.8K | 65 | 117 |
| 254 | Nervous system | 189 | 3.8K | 129 | 334 |
| 255 | Marine Pollution | 94 | 3.7K | 28 | 41 |
| 256 | Biodiversity | 109 | 3.7K | 139 | 239 |
| 257 | Immune system | 52 | 3.7K | 115 | 196 |
| 258 | Radiography | 70 | 3.7K | 75 | 92 |
| 259 | Metals | 105 | 3.7K | 206 | 234 |
| 260 | Genetic regulation | 64 | 3.7K | 83 | 127 |
| 261 | Economic History | 242 | 3.7K | 106 | 209 |
| 262 | cell physiology | 98 | 3.6K | 114 | 196 |
| 263 | Engineering Geology | 153 | 3.6K | 46 | 95 |
| 264 | Carcinogenesis | 73 | 3.6K | 42 | 40 |
| 265 | Chromosome mapping | 152 | 3.6K | 50 | 153 |
| 266 | Virulence | 73 | 3.5K | 100 | 172 |
| 267 | Soil Science | 120 | 3.5K | 111 | 161 |
| 268 | Systems Biology | 137 | 3.5K | 26 | 62 |
| 269 | Nanobiotechnology | 106 | 3.5K | 6 | 18 |
| 270 | Soil Mechanics | 151 | 3.5K | 48 | 93 |
| 271 | Chromatographic analysis | 182 | 3.5K | 25 | 34 |
| 272 | Electromagnetism | 143 | 3.5K | 21 | 25 |
| 273 | Urban Policy | 69 | 3.4K | 27 | 11 |
| 274 | Membranes | 55 | 3.4K | 298 | 240 |
| 275 | Plant physiology | 109 | 3.3K | 203 | 337 |
| 276 | Computer Graphics | 163 | 3.3K | 81 | 156 |
| 277 | Mobile Computing | 117 | 3.2K | 29 | 54 |
| 278 | Health Policy | 73 | 3.2K | 293 | 201 |
| 279 | Leukemia | 44 | 3.2K | 162 | 156 |
| 280 | Vaccines | 104 | 3.2K | 113 | 131 |
| 281 | Industrial Engineering | 103 | 3.2K | 122 | 149 |
| 282 | Developmental Immunology | 80 | 3.2K | 9 | 9 |
| 283 | International Finance | 158 | 3.2K | 18 | 81 |
| 284 | Medical Physics | 167 | 3.1K | 104 | 219 |
| 285 | Plant diseases | 83 | 3.1K | 220 | 167 |
| 286 | mutagens | 60 | 3.1K | 42 | 53 |
| 287 | human behavior | 56 | 3.1K | 438 | 473 |
| 288 | cloning | 42 | 3.1K | 39 | 45 |
| 289 | drugs | 126 | 3.1K | 103 | 156 |
| 290 | Obstetrics | 175 | 3.0K | 152 | 251 |
| 291 | Proteomics | 86 | 3.0K | 28 | 72 |
| 292 | Chromatography | 142 | 3.0K | 27 | 38 |
| 293 | drug development | 46 | 3.0K | 89 | 135 |
| 294 | Allergy | 47 | 2.9K | 183 | 254 |
| 295 | Herbal medicine | 90 | 2.9K | 20 | 23 |
| 296 | Digestive system diseases | 129 | 2.9K | 14 | 34 |
| 297 | Housing | 40 | 2.9K | 34 | 13 |
| 298 | Light | 20 | 2.9K | 269 | 187 |
| 299 | Proteome | 71 | 2.9K | 70 | 118 |
| 300 | Hormones | 88 | 2.9K | 76 | 117 |
| 301 | Economic Development | 43 | 2.9K | 249 | 190 |
| 301 | System analysis | 174 | 2.9K | 60 | 167 |
| 303 | Plant Ecology | 88 | 2.9K | 165 | 271 |
| 304 | Histology | 119 | 2.9K | 113 | 222 |
| 305 | Electrophoresis | 141 | 2.9K | 28 | 79 |
| 306 | Cardiovascular diseases | 145 | 2.9K | 66 | 150 |
| 307 | Ore deposits | 116 | 2.8K | 16 | 24 |
| 308 | sustainability | 40 | 2.8K | 62 | 76 |
| 309 | Rock Mechanics | 115 | 2.8K | 50 | 94 |
| 310 | Bone diseases | 32 | 2.8K | 30 | 43 |
| 311 | Therapeutics | 79 | 2.8K | 186 | 210 |
| 312 | Population | 46 | 2.8K | 77 | 46 |
| 313 | Surface-Active Agents | 67 | 2.8K | 27 | 39 |
| 313 | Surface properties | 67 | 2.8K | 29 | 42 |
| 315 | Optical Communications | 118 | 2.7K | 18 | 25 |
| 316 | Analytical Biochemistry | 88 | 2.7K | 68 | 112 |
| 317 | Drug delivery systems | 69 | 2.7K | 93 | 164 |
| 318 | Parasitic Diseases | 97 | 2.7K | 113 | 175 |
| 319 | Computer Science | 117 | 2.7K | 50 | 64 |
| 320 | community development | 34 | 2.7K | 44 | 10 |
| 321 | Operations Research | 112 | 2.7K | 169 | 273 |
| 322 | economic policy | 150 | 2.7K | 82 | 128 |
| 323 | Recombinant DNA | 141 | 2.6K | 14 | 93 |
| 324 | Pharmacy | 80 | 2.6K | 224 | 205 |
| 325 | Heat Exchangers | 77 | 2.6K | 72 | 94 |
| 326 | Evolution | 49 | 2.6K | 379 | 391 |
| 327 | Neurobiology | 56 | 2.6K | 307 | 357 |
| 328 | Physical organic chemistry | 90 | 2.6K | 41 | 48 |
| 329 | Urban Planning | 33 | 2.6K | 24 | 12 |
| 330 | Boundary Value Problems | 119 | 2.6K | 14 | 23 |
| 331 | Luminescence | 108 | 2.6K | 19 | 18 |
| 332 | Radiation | 146 | 2.6K | 54 | 123 |
| 333 | Fiber Optics | 135 | 2.5K | 40 | 79 |
| 334 | Immunopathology | 71 | 2.5K | 129 | 138 |
| 335 | Building Materials | 78 | 2.5K | 200 | 292 |
| 336 | Socioeconomic Factors | 59 | 2.4K | 29 | 24 |
| 337 | Metallurgy | 78 | 2.4K | 310 | 323 |
| 338 | Antenna Arrays | 110 | 2.4K | 13 | 26 |
| 339 | Drug design | 71 | 2.4K | 66 | 97 |
| 340 | Immunochemistry | 70 | 2.4K | 23 | 20 |
| 341 | Developing countries | 155 | 2.4K | 78 | 235 |
| 342 | Marine Meteorology | 160 | 2.4K | 13 | 49 |
| 343 | Neuroimmunology | 45 | 2.4K | 57 | 75 |
| 344 | Mineralogy | 83 | 2.4K | 168 | 214 |
| 345 | catalytic activity | 66 | 2.4K | 20 | 38 |
| 346 | Informatics | 72 | 2.4K | 19 | 48 |
| 347 | Functional Analysis | 136 | 2.4K | 15 | 49 |
| 348 | Information Theory | 118 | 2.4K | 78 | 156 |
| 349 | marketing | 67 | 2.4K | 245 | 363 |
| 350 | Europe | 115 | 2.4K | 295 | 345 |
| 351 | Production Management | 41 | 2.3K | 167 | 210 |
| 352 | Phylogeny | 57 | 2.3K | 46 | 85 |
| 353 | Semiconductors | 114 | 2.3K | 134 | 114 |
| 354 | Biogeography | 33 | 2.3K | 189 | 163 |
| 355 | Numerical Analysis | 143 | 2.3K | 83 | 165 |
| 356 | Psychoneuroimmunology | 43 | 2.3K | 46 | 68 |
| 357 | Obesity | 81 | 2.3K | 234 | 328 |
| 358 | Molecular cloning | 118 | 2.3K | 16 | 102 |
| 359 | Lipids | 83 | 2.3K | 66 | 160 |
| 360 | Diagnosis | 69 | 2.3K | 8 | 4 |
| 361 | biochemical markers | 50 | 2.3K | 15 | 3 |
| 362 | Environmental Geology | 86 | 2.2K | 58 | 113 |
| 363 | gene therapy | 76 | 2.2K | 65 | 133 |
| 364 | mass transfer | 104 | 2.2K | 110 | 231 |
| 365 | Disease | 7 | 2.2K | 151 | 167 |
| 366 | Social Psychology | 65 | 2.2K | 376 | 433 |
| 366 | diseases | 6 | 2.2K | 168 | 172 |
| 368 | Structural Engineering | 67 | 2.2K | 242 | 222 |
| 369 | Nanochemistry | 104 | 2.2K | 11 | 13 |
| 370 | Health | 57 | 2.2K | 301 | 259 |
| 371 | Petrology | 73 | 2.2K | 138 | 204 |
| 372 | energy resources | 24 | 2.2K | 338 | 261 |
| 373 | Differential Equations | 132 | 2.2K | 13 | 41 |
| 374 | Genetic recombination | 116 | 2.2K | 16 | 102 |
| 375 | Pharmacogenetics | 63 | 2.1K | 53 | 82 |
| 376 | Food Microbiology | 44 | 2.1K | 153 | 166 |
| 377 | Clinical Immunology | 68 | 2.1K | 96 | 109 |
| 378 | Rheumatology | 68 | 2.1K | 119 | 195 |
| 378 | Detectors | 157 | 2.1K | 28 | 83 |
| 380 | Embryology | 65 | 2.1K | 232 | 328 |
| 380 | Human Geography | 61 | 2.1K | 124 | 124 |
| 382 | drug resistance | 51 | 2.1K | 16 | 20 |
| 383 | United States | 121 | 2.1K | 602 | 811 |
| 384 | Solar Energy | 68 | 2.1K | 106 | 176 |
| 385 | water supply | 56 | 2.1K | 122 | 163 |
| 386 | Reproductive health | 51 | 2.1K | 48 | 31 |
| 387 | Nuclear Engineering | 185 | 2.0K | 67 | 94 |
| 388 | health planning | 134 | 2.0K | 57 | 146 |
| 389 | Urology | 114 | 2.0K | 159 | 262 |
| 390 | RNA | 33 | 2.0K | 55 | 54 |
| 391 | Psychophysiology | 71 | 2.0K | 529 | 649 |
| 392 | bioclimatology | 75 | 2.0K | 11 | 28 |
| 393 | Molecular ecology | 42 | 2.0K | 184 | 252 |
| 394 | Geomorphology | 86 | 2.0K | 90 | 216 |
| 395 | Bacterial infections | 33 | 2.0K | 94 | 158 |
| 396 | Soil biology | 39 | 2.0K | 160 | 201 |
| 397 | Thrombosis | 45 | 2.0K | 181 | 194 |
| 398 | Mycology | 58 | 2.0K | 204 | 229 |
| 399 | Medical Technology | 67 | 2.0K | 85 | 120 |
| 399 | Entomology | 121 | 2.0K | 179 | 250 |
| 401 | Molecular Pharmacology | 52 | 2.0K | 66 | 99 |
| 402 | drug therapy | 80 | 2.0K | 302 | 355 |
| 403 | arthritis | 60 | 2.0K | 168 | 271 |
| 404 | ecosystem | 41 | 2.0K | 212 | 244 |
| 405 | Public Policy | 75 | 1.9K | 159 | 222 |
| 406 | Pharmacokinetics | 31 | 1.9K | 96 | 57 |
| 406 | Quantum theory | 62 | 1.9K | 90 | 68 |
| 408 | Nuclear Energy | 160 | 1.9K | 41 | 56 |
| 409 | Insects | 90 | 1.9K | 73 | 135 |
| 410 | Sociology | 110 | 1.9K | 321 | 465 |
| 411 | pigments | 80 | 1.9K | 27 | 31 |
| 412 | insurance | 29 | 1.9K | 56 | 18 |
| 413 | Actuarial Science | 28 | 1.9K | 35 | 12 |
| 414 | Plastics | 77 | 1.8K | 102 | 140 |
| 415 | Social Sciences | 128 | 1.8K | 272 | 424 |
| 416 | Gastrointestinal diseases | 105 | 1.8K | 3 | 10 |
| 417 | mycoses | 36 | 1.8K | 72 | 167 |
| 418 | Nonlinear Dynamics | 101 | 1.8K | 286 | 423 |
| 419 | pain | 54 | 1.8K | 193 | 279 |
| 420 | Parasites | 80 | 1.8K | 90 | 149 |
| 421 | solar cells | 50 | 1.8K | 52 | 87 |
| 422 | poverty | 38 | 1.8K | 9 | 9 |
| 422 | healthcare disparities | 38 | 1.8K | 38 | 18 |
| 424 | Control Theory | 119 | 1.7K | 129 | 239 |
| 425 | infection | 59 | 1.7K | 197 | 289 |
| 426 | drug evaluation | 76 | 1.7K | 38 | 66 |
| 427 | Mental illness | 53 | 1.7K | 327 | 462 |
| 428 | enzymes | 46 | 1.7K | 198 | 197 |
| 429 | Orthopedics | 100 | 1.7K | 131 | 222 |
| 429 | Clinical Pharmacology | 69 | 1.7K | 108 | 143 |
| 431 | Electrical Engineering | 169 | 1.7K | 239 | 370 |
| 432 | Hemodynamics | 38 | 1.7K | 113 | 177 |
| 433 | Quality of life | 69 | 1.7K | 86 | 206 |
| 434 | Cell cycle | 71 | 1.6K | 4 | 15 |
| 434 | cell proliferation | 71 | 1.6K | 4 | 15 |
| 436 | vascular diseases | 29 | 1.6K | 159 | 180 |
| 437 | Robotics | 70 | 1.6K | 180 | 251 |
| 438 | Radiation Oncology | 87 | 1.6K | 4 | 10 |
| 438 | health services accessibility | 38 | 1.6K | 137 | 85 |
| 440 | Biomarkers | 31 | 1.6K | 17 | 6 |
| 441 | Nonlinear functional analysis | 129 | 1.6K | 6 | 40 |
| 442 | Critical Care | 43 | 1.6K | 281 | 423 |
| 443 | fertility | 46 | 1.6K | 156 | 211 |
| 444 | Infertility | 45 | 1.6K | 145 | 195 |
| 445 | rehabilitation | 76 | 1.6K | 229 | 357 |
| 446 | Paleoclimatology | 58 | 1.6K | 133 | 217 |
| 447 | Critical Care Medicine | 35 | 1.6K | 336 | 437 |
| 448 | Dynamics | 75 | 1.5K | 94 | 100 |
| 449 | DNA polymerases | 22 | 1.5K | 74 | 140 |
| 450 | Power Electronics | 45 | 1.5K | 187 | 261 |
| 451 | Ceramics | 64 | 1.5K | 152 | 194 |
| 452 | Microwaves | 93 | 1.5K | 148 | 194 |
| 453 | Population Genetics | 56 | 1.5K | 156 | 298 |
| 454 | Sleep Disorders | 51 | 1.5K | 247 | 256 |
| 455 | Public Administration | 69 | 1.5K | 145 | 191 |
| 456 | Biopharmaceutics | 52 | 1.5K | 75 | 134 |
| 457 | Sleep | 51 | 1.5K | 244 | 261 |
| 458 | Neuropsychology | 70 | 1.5K | 361 | 512 |
| 458 | Kidney diseases | 74 | 1.5K | 61 | 121 |
| 460 | eye | 26 | 1.5K | 11 | 67 |
| 461 | Molecular Spectroscopy | 92 | 1.4K | 86 | 177 |
| 462 | Cell communication | 61 | 1.4K | 7 | 39 |
| 463 | Clinical Biochemistry | 36 | 1.4K | 179 | 153 |
| 463 | Water quality management | 62 | 1.4K | 158 | 195 |
| 465 | Education | 44 | 1.4K | 833 | 620 |
| 466 | nuclear power | 99 | 1.4K | 26 | 15 |
| 467 | Statistics | 85 | 1.4K | 416 | 480 |
| 468 | Quantum electronics | 66 | 1.4K | 200 | 211 |
| 468 | Business Ethics | 24 | 1.4K | 189 | 256 |
| 470 | Cytogenetics | 45 | 1.4K | 225 | 369 |
| 470 | Biofilms | 25 | 1.4K | 2 | 2 |
| 472 | Photochemistry | 47 | 1.4K | 213 | 224 |
| 473 | Chemical industry | 59 | 1.4K | 127 | 90 |
| 474 | Spine | 56 | 1.4K | 74 | 132 |
| 475 | Recycling | 31 | 1.4K | 55 | 119 |
| 476 | Parenteral nutrition | 47 | 1.4K | 112 | 222 |
| 477 | dietary supplements | 35 | 1.4K | 52 | 53 |
| 478 | Bacteriology | 92 | 1.4K | 210 | 535 |
| 479 | Organometallic compounds | 40 | 1.4K | 234 | 219 |
| 480 | Entrepreneurship | 10 | 1.4K | 431 | 286 |
| 481 | Respiration | 48 | 1.4K | 250 | 316 |
| 482 | natural disasters | 45 | 1.4K | 85 | 150 |
| 483 | solar power | 37 | 1.4K | 62 | 104 |
| 484 | Plant Genetics | 31 | 1.4K | 99 | 171 |
| 485 | Transplantation | 51 | 1.3K | 167 | 276 |
| 486 | soil conservation | 42 | 1.3K | 33 | 34 |
| 487 | Tunneling | 55 | 1.3K | 27 | 60 |
| 487 | underground construction | 55 | 1.3K | 27 | 60 |
| 489 | Geochemical Modeling | 33 | 1.3K | 36 | 61 |
| 489 | geological modeling | 33 | 1.3K | 45 | 64 |
| 491 | Plant genetic engineering | 29 | 1.3K | 161 | 171 |
| 492 | Land use | 41 | 1.3K | 98 | 134 |
| 493 | Fungi | 26 | 1.3K | 244 | 231 |
| 494 | gastrointestinal tract | 23 | 1.3K | 24 | 36 |
| 495 | Landscape Ecology | 15 | 1.3K | 107 | 64 |
| 496 | Paleoecology | 53 | 1.3K | 136 | 210 |
| 497 | Food additives | 28 | 1.3K | 191 | 200 |
| 498 | Retina | 14 | 1.3K | 27 | 69 |
| 499 | Radiology | 72 | 1.3K | 115 | 144 |
| 500 | Infections | 32 | 1.3K | 212 | 286 |
| 501 | Mechatronics | 46 | 1.3K | 92 | 108 |
| 502 | Microbial Biotechnology | 35 | 1.3K | 58 | 68 |
| 503 | Stochastic Processes | 49 | 1.3K | 42 | 35 |
| 504 | Orthopedic Surgery | 69 | 1.3K | 47 | 87 |
| 505 | Enteral nutrition | 42 | 1.3K | 77 | 180 |
| 506 | Solitons | 61 | 1.3K | 46 | 82 |
| 506 | Fractals | 61 | 1.3K | 46 | 82 |
| 506 | Chaos | 61 | 1.3K | 46 | 82 |
| 509 | Photobiology | 35 | 1.2K | 150 | 133 |
| 510 | disease vectors | 58 | 1.2K | 54 | 110 |
| 511 | Regional Planning | 54 | 1.2K | 212 | 293 |
| 512 | Geographic information systems | 115 | 1.2K | 14 | 56 |
| 513 | Hospitality industry | 33 | 1.2K | 18 | 15 |
| 514 | Egypt | 52 | 1.2K | 22 | 25 |
| 515 | Nuclear Medicine | 54 | 1.2K | 132 | 174 |
| 515 | Human-Computer Interaction | 48 | 1.2K | 135 | 205 |
| 517 | Mechanical Engineering | 60 | 1.2K | 406 | 343 |
| 518 | Geomagnetism | 62 | 1.2K | 63 | 103 |
| 519 | Logistics | 40 | 1.2K | 35 | 77 |
| 519 | Fracture mechanics | 59 | 1.2K | 196 | 260 |
| 521 | Investment analysis | 63 | 1.2K | 20 | 74 |
| 521 | Chemical analysis | 41 | 1.2K | 94 | 130 |
| 521 | Hazardous waste | 19 | 1.2K | 202 | 179 |
| 524 | coal | 41 | 1.2K | 269 | 410 |
| 525 | Paleogeography | 49 | 1.2K | 117 | 214 |
| 526 | Pediatrics | 63 | 1.2K | 354 | 598 |
| 527 | vibration | 38 | 1.2K | 180 | 211 |
| 528 | Child | 65 | 1.2K | 322 | 469 |
| 529 | soil pollution | 39 | 1.2K | 16 | 18 |
| 530 | Technological Innovations | 45 | 1.2K | 64 | 102 |
| 531 | Engineering Mathematics | 121 | 1.2K | 76 | 245 |
| 531 | histological techniques | 31 | 1.2K | 93 | 144 |
| 533 | Pregnancy | 68 | 1.2K | 36 | 88 |
| 534 | Alternative Medicine | 59 | 1.1K | 102 | 167 |
| 535 | innovation | 8 | 1.1K | 336 | 206 |
| 536 | Rural Development | 15 | 1.1K | 116 | 61 |
| 537 | Telecommunication Systems | 91 | 1.1K | 60 | 149 |
| 538 | brain mapping | 29 | 1.1K | 131 | 175 |
| 539 | Molecular Imaging | 45 | 1.1K | 89 | 149 |
| 540 | Schizophrenia | 18 | 1.1K | 337 | 269 |
| 541 | Earthquake Engineering | 48 | 1.1K | 281 | 351 |
| 542 | Soil ecology | 37 | 1.1K | 87 | 136 |
| 543 | Cellular senescence | 13 | 1.1K | 30 | 48 |
| 544 | place marketing | 28 | 1.1K | 3 | 6 |
| 544 | biopolymers | 51 | 1.1K | 176 | 257 |
| 546 | risk factors | 51 | 1.1K | 53 | 118 |
| 547 | Oral Medicine | 70 | 1.1K | 22 | 25 |
| 548 | complementary therapies | 56 | 1.1K | 115 | 188 |
| 549 | Growth | 23 | 1.1K | 353 | 434 |
| 550 | Structural dynamics | 30 | 1.1K | 219 | 279 |
| 550 | Autism | 28 | 1.1K | 133 | 169 |
| 552 | Respiratory system | 32 | 1.1K | 70 | 81 |
| 553 | Systems Analysis | 60 | 1.1K | 47 | 96 |
| 554 | X-rays | 71 | 1.1K | 8 | 20 |
| 555 | Decision making | 45 | 1.1K | 186 | 298 |
| 556 | Computational Intelligence | 35 | 1.1K | 52 | 39 |
| 557 | Antioxidants | 27 | 1.0K | 88 | 216 |
| 558 | personality | 24 | 1.0K | 495 | 516 |
| 559 | Geodynamics | 40 | 1.0K | 167 | 260 |
| 559 | radioactive waste | 15 | 1.0K | 201 | 194 |
| 559 | industrial waste | 15 | 1.0K | 222 | 196 |
| 562 | Venture Capital | 3 | 1.0K | 282 | 160 |
| 563 | Gene expression regulation | 36 | 1.0K | 121 | 236 |
| 563 | Primates | 52 | 1.0K | 64 | 110 |
| 565 | Insect biochemistry | 34 | 1.0K | 43 | 69 |
| 566 | Manufacturing Processes | 35 | 1.0K | 583 | 578 |
| 567 | Glass | 45 | 1.0K | 153 | 239 |
| 567 | pottery | 45 | 1.0K | 152 | 234 |
| 569 | Serology | 76 | 1.0K | 8 | 31 |
| 569 | Australia | 62 | 1.0K | 167 | 236 |
| 571 | Fuzzy systems | 73 | 1.0K | 79 | 119 |
| 572 | Visual Communication | 35 | 992 | 21 | 12 |
| 572 | Image enhancement | 35 | 992 | 20 | 12 |
| 574 | software | 42 | 986 | 59 | 160 |
| 575 | Diagnostic microbiology | 19 | 983 | 357 | 449 |
| 576 | hazard mitigation | 38 | 973 | 58 | 101 |
| 577 | big data | 37 | 967 | 8 | 35 |
| 578 | hydrocolloids | 13 | 962 | 227 | 212 |
| 579 | Autoimmunity | 16 | 949 | 225 | 199 |
| 580 | global environmental change | 23 | 945 | 158 | 234 |
| 581 | Alzheimer's disease | 24 | 934 | 433 | 267 |
| 582 | Muscles | 22 | 928 | 206 | 211 |
| 583 | Particle Physics | 5 | 922 | 150 | 43 |
| 583 | Elementary particles | 3 | 922 | 164 | 39 |
| 585 | Combinatorial chemistry | 20 | 920 | 177 | 204 |
| 586 | Data Mining | 46 | 905 | 51 | 176 |
| 587 | preimplantation genetic diagnosis | 45 | 901 | 20 | 28 |
| 587 | embryo transfer | 45 | 901 | 22 | 30 |
| 589 | biomedicine | 21 | 900 | 58 | 43 |
| 590 | concrete | 28 | 898 | 204 | 338 |
| 591 | particles | 40 | 896 | 83 | 102 |
| 592 | Conservation Biology | 49 | 888 | 126 | 327 |
| 593 | Jurisprudence | 48 | 887 | 121 | 137 |
| 594 | Algebra | 45 | 886 | 298 | 150 |
| 595 | Plant Biotechnology | 15 | 885 | 224 | 136 |
| 596 | Enzyme | 13 | 884 | 145 | 79 |
| 597 | Vision | 47 | 882 | 107 | 199 |
| 598 | Ultrasonics | 25 | 880 | 274 | 291 |
| 599 | Ceramic materials | 42 | 873 | 177 | 259 |
| 600 | visualization | 95 | 872 | 103 | 182 |
| 601 | Child Development | 42 | 870 | 405 | 596 |
| 602 | Geobiology | 34 | 858 | 44 | 73 |
| 603 | Nanophotonics | 38 | 852 | 13 | 50 |
| 604 | environmental remediation | 21 | 842 | 11 | 10 |
| 605 | Phytochemistry | 20 | 832 | 11 | 10 |
| 605 | Phytoremediation | 20 | 832 | 11 | 10 |
| 605 | Bioreactors | 20 | 832 | 11 | 10 |
| 608 | Nursing | 44 | 830 | 319 | 312 |
| 609 | Corporate Social Responsibility | 7 | 826 | 95 | 38 |
| 609 | environmental auditing | 7 | 826 | 102 | 38 |
| 609 | medical education | 56 | 826 | 269 | 387 |
| 612 | Anatomy | 33 | 824 | 506 | 567 |
| 613 | Fluid Mechanics | 40 | 820 | 300 | 399 |
| 614 | Biogeochemistry | 27 | 816 | 308 | 433 |
| 615 | Zeolites | 23 | 815 | 206 | 229 |
| 616 | Information Systems | 22 | 810 | 321 | 267 |
| 617 | Tropical Medicine | 46 | 805 | 228 | 330 |
| 618 | Plant tissue culture | 26 | 801 | 90 | 104 |
| 618 | Adolescent | 42 | 801 | 394 | 523 |
| 620 | Plant cell culture | 23 | 797 | 82 | 103 |
| 621 | Neurosurgery | 34 | 793 | 170 | 270 |
| 622 | Fishery management | 33 | 791 | 143 | 153 |
| 623 | Radiation effects | 21 | 789 | 81 | 104 |
| 624 | Medical Anthropology | 23 | 781 | 333 | 422 |
| 625 | Zoology | 61 | 775 | 431 | 668 |
| 625 | Drug targeting | 24 | 775 | 19 | 32 |
| 627 | Dermatology | 66 | 768 | 243 | 463 |
| 627 | Biomolecules | 31 | 768 | 22 | 114 |
| 629 | Travel | 40 | 767 | 78 | 110 |
| 630 | Software Engineering | 42 | 766 | 133 | 262 |
| 631 | Strategic planning | 13 | 765 | 229 | 156 |
| 632 | Minerals | 23 | 760 | 105 | 95 |
| 633 | Dementia | 17 | 758 | 527 | 277 |
| 634 | commerce | 45 | 756 | 162 | 442 |
| 635 | Leadership | 5 | 745 | 375 | 181 |
| 636 | Autoantibodies | 14 | 735 | 167 | 132 |
| 636 | Autoimmune diseases | 14 | 735 | 186 | 148 |
| 638 | United Kingdom | 15 | 732 | 577 | 504 |
| 639 | Organizational change | 3 | 729 | 755 | 125 |
| 640 | biocatalysis | 5 | 723 | 105 | 156 |
| 640 | Homogeneous catalysis | 5 | 723 | 105 | 156 |
| 640 | Heterogeneous catalysis | 5 | 723 | 105 | 156 |
| 643 | Physical Geography | 78 | 718 | 7 | 80 |
| 644 | Global Health | 38 | 716 | 124 | 145 |
| 644 | electric vehicles | 22 | 716 | 55 | 54 |
| 646 | Health Services Research | 42 | 714 | 282 | 402 |
| 647 | Marine Geology | 31 | 713 | 80 | 132 |
| 648 | Tissue Engineering | 28 | 704 | 24 | 69 |
| 649 | Capital market | 52 | 703 | 10 | 65 |
| 650 | Marine Biotechnology | 31 | 701 | 8 | 19 |
| 651 | Forest Ecology | 36 | 699 | 176 | 339 |
| 652 | Sarcopenia | 14 | 698 | 68 | 121 |
| 653 | Imaging systems | 57 | 695 | 21 | 44 |
| 654 | Meteorites | 24 | 694 | 317 | 452 |
| 655 | consumer behavior | 18 | 693 | 112 | 165 |
| 656 | Environmental Geochemistry | 22 | 691 | 36 | 32 |
| 657 | Energy Consumption | 6 | 687 | 215 | 133 |
| 658 | population geography | 32 | 686 | 25 | 59 |
| 659 | Genes | 49 | 682 | 100 | 234 |
| 660 | Marine resources | 35 | 680 | 58 | 110 |
| 660 | Atomic spectroscopy | 50 | 680 | 124 | 271 |
| 662 | Forest Management | 35 | 677 | 172 | 315 |
| 663 | Bones | 16 | 676 | 248 | 288 |
| 664 | Primary health care | 38 | 673 | 321 | 411 |
| 665 | Coastal zone management | 32 | 669 | 57 | 108 |
| 666 | Trace elements | 12 | 668 | 49 | 29 |
| 667 | Geodesy | 32 | 665 | 76 | 105 |
| 668 | Petroleum Geology | 24 | 659 | 110 | 133 |
| 669 | Japan | 34 | 654 | 300 | 299 |
| 670 | ecotourism | 34 | 651 | 4 | 29 |
| 671 | Social Change | 19 | 650 | 245 | 430 |
| 672 | Econometrics | 30 | 645 | 361 | 409 |
| 672 | Agriculture | 38 | 645 | 401 | 639 |
| 674 | Paleontology | 69 | 644 | 160 | 358 |
| 674 | Process Control | 14 | 644 | 342 | 439 |
| 676 | Wildlife conservation | 21 | 642 | 343 | 462 |
| 677 | Forensic Genetics | 31 | 639 | 32 | 58 |
| 678 | Quantum Communication | 14 | 638 | 37 | 44 |
| 678 | Steroids | 34 | 638 | 159 | 256 |
| 680 | Animal Behavior | 24 | 635 | 619 | 789 |
| 681 | protein | 22 | 633 | 346 | 368 |
| 682 | Evidence-Based Medicine | 38 | 632 | 61 | 113 |
| 683 | Continental shelf | 16 | 630 | 108 | 107 |
| 684 | Computational Complexity | 58 | 628 | 31 | 83 |
| 685 | Fluid Dynamics | 36 | 626 | 210 | 329 |
| 685 | extraterrestrial environment | 50 | 626 | 41 | 74 |
| 687 | Lightweight concrete | 17 | 623 | 106 | 214 |
| 688 | Bioenergetics | 27 | 622 | 160 | 307 |
| 689 | Urban Geography | 18 | 620 | 43 | 35 |
| 690 | Measurement | 52 | 618 | 113 | 301 |
| 691 | Electrochemical Analysis | 29 | 617 | 394 | 494 |
| 692 | econometric models | 33 | 616 | 26 | 94 |
| 693 | Computational Fluid Dynamics | 51 | 611 | 24 | 142 |
| 694 | ovary | 29 | 608 | 13 | 16 |
| 695 | Hydrodynamics | 25 | 601 | 110 | 185 |
| 695 | Quantum Optics | 45 | 601 | 88 | 193 |
| 695 | Laser Spectroscopy | 45 | 601 | 69 | 168 |
| 698 | biological monitoring | 26 | 600 | 40 | 81 |
| 699 | disease outbreaks | 11 | 599 | 213 | 167 |
| 699 | Epidemics | 11 | 599 | 200 | 164 |
| 701 | Histochemistry | 29 | 593 | 201 | 280 |
| 701 | Swarm Intelligence | 21 | 593 | 25 | 73 |
| 701 | astronomical phenomena | 47 | 593 | 40 | 75 |
| 704 | Developmental Disabilities | 21 | 592 | 295 | 395 |
| 705 | Emotions | 8 | 590 | 332 | 263 |
| 706 | Fisheries | 23 | 588 | 469 | 525 |
| 707 | organization | 9 | 587 | 415 | 407 |
| 708 | plant communities | 19 | 581 | 364 | 527 |
| 709 | Hydraulic Engineering | 15 | 575 | 344 | 274 |
| 710 | Tribology | 27 | 573 | 258 | 332 |
| 710 | Mass Spectrometry | 38 | 573 | 214 | 378 |
| 712 | Nanomedicine | 5 | 571 | 111 | 24 |
| 713 | Quality Control | 19 | 569 | 470 | 497 |
| 714 | Crystallography | 77 | 563 | 171 | 314 |
| 715 | Sonochemistry | 5 | 562 | 459 | 237 |
| 716 | weather | 26 | 559 | 42 | 115 |
| 716 | Cerebral cortex | 32 | 559 | 207 | 407 |
| 718 | Neurotoxicology | 21 | 558 | 75 | 150 |
| 719 | Database Management | 22 | 555 | 212 | 257 |
| 720 | human development | 22 | 551 | 205 | 298 |
| 721 | air quality management | 29 | 549 | 26 | 108 |
| 722 | Perception | 30 | 545 | 487 | 635 |
| 723 | behavioral medicine | 34 | 542 | 261 | 563 |
| 724 | food industry | 20 | 540 | 106 | 75 |
| 725 | Randomized Controlled Trials | 48 | 538 | 111 | 190 |
| 726 | Humanities | 68 | 537 | 55 | 232 |
| 727 | soil management | 19 | 535 | 121 | 197 |
| 728 | Women's health | 35 | 534 | 188 | 293 |
| 729 | Climate | 17 | 531 | 116 | 167 |
| 730 | Ethology | 15 | 529 | 641 | 753 |
| 731 | Hematopoietic stem cell transplantation | 26 | 527 | 23 | 124 |
| 731 | Gerontology | 50 | 527 | 334 | 550 |
| 733 | biological invasions | 19 | 523 | 115 | 178 |
| 734 | impact | 8 | 522 | 157 | 109 |
| 735 | Entropy | 59 | 520 | 32 | 150 |
| 736 | Industrial Safety | 19 | 513 | 306 | 330 |
| 737 | Hemostasis | 17 | 506 | 232 | 196 |
| 738 | Heritage Tourism | 19 | 504 | 3 | 4 |
| 738 | cultural tourism | 19 | 504 | 3 | 4 |
| 740 | Ecological Engineering | 11 | 501 | 195 | 214 |
| 741 | Metallography | 24 | 500 | 158 | 227 |
| 742 | Mental Health | 22 | 498 | 455 | 474 |
| 742 | Social work | 26 | 498 | 399 | 389 |
| 742 | tillage | 12 | 498 | 134 | 174 |
| 745 | Harmonic Analysis | 25 | 497 | 16 | 43 |
| 746 | Ocean-atmosphere interaction | 40 | 496 | 9 | 7 |
| 747 | Soil dynamics | 25 | 495 | 89 | 151 |
| 748 | Memory | 19 | 492 | 609 | 673 |
| 749 | Experimental Psychology | 15 | 490 | 235 | 256 |
| 750 | Cartography | 19 | 489 | 68 | 36 |
| 751 | Evolutionary Genetics | 27 | 488 | 43 | 124 |
| 751 | Molecular Epidemiology | 27 | 488 | 43 | 124 |
| 751 | Biometrics | 29 | 488 | 269 | 350 |
| 751 | hygiene | 18 | 488 | 70 | 84 |
| 755 | Plasma chemistry | 11 | 487 | 150 | 80 |
| 755 | Antibacterial agents | 16 | 487 | 145 | 204 |
| 757 | Physical Therapy | 20 | 484 | 392 | 548 |
| 757 | DNS | 27 | 484 | 32 | 96 |
| 759 | Smart Materials | 16 | 479 | 294 | 295 |
| 760 | Chemotherapy | 32 | 477 | 296 | 454 |
| 761 | Magnetic Resonance Spectroscopy | 23 | 475 | 369 | 362 |
| 762 | Cognitive neuroscience | 27 | 473 | 274 | 517 |
| 763 | Psychosomatic Medicine | 15 | 472 | 268 | 322 |
| 764 | Structural design | 15 | 469 | 261 | 248 |
| 764 | Andrology | 42 | 469 | 41 | 154 |
| 766 | Child psychology | 26 | 467 | 426 | 693 |
| 767 | Databases | 13 | 464 | 149 | 134 |
| 768 | Immunogenetics | 31 | 460 | 88 | 180 |
| 769 | emergency management | 15 | 458 | 159 | 181 |
| 770 | Computer-Aided Design | 29 | 453 | 243 | 387 |
| 770 | nuclear magnetic resonance spectroscopy | 18 | 453 | 215 | 207 |
| 772 | NMR | 17 | 452 | 109 | 65 |
| 772 | magnetic resonance | 18 | 452 | 100 | 69 |
| 774 | DNA | 25 | 449 | 52 | 110 |
| 775 | Cell division | 7 | 446 | 171 | 116 |
| 776 | Molecules | 45 | 444 | 321 | 555 |
| 777 | Bacteria | 7 | 442 | 167 | 176 |
| 778 | Geriatric Oncology | 14 | 441 | 163 | 198 |
| 779 | Audiology | 17 | 439 | 270 | 263 |
| 779 | Optoelectronic devices | 33 | 439 | 97 | 126 |
| 781 | Hydrogeology | 11 | 438 | 280 | 190 |
| 781 | Histocompatibility Testing | 17 | 438 | 97 | 106 |
| 781 | Mechanics | 20 | 438 | 394 | 370 |
| 784 | Psychometrics | 15 | 434 | 162 | 185 |
| 785 | synthesis | 32 | 432 | 117 | 147 |
| 786 | Cognitive Science | 27 | 430 | 371 | 726 |
| 787 | Metabolic syndrome | 23 | 427 | 21 | 32 |
| 788 | Geometry | 63 | 422 | 117 | 215 |
| 788 | Natural resources | 7 | 422 | 446 | 342 |
| 790 | Cloud Computing | 13 | 419 | 67 | 63 |
| 791 | Risk Management | 16 | 418 | 166 | 205 |
| 792 | Developmental Psychology | 10 | 417 | 525 | 490 |
| 793 | Solar power plants | 13 | 416 | 38 | 62 |
| 793 | Photovoltaic Cells | 13 | 416 | 38 | 62 |
| 793 | food handling | 9 | 416 | 404 | 366 |
| 796 | Agricultural Ecology | 17 | 414 | 310 | 543 |
| 796 | Cognitive Radio Networks | 23 | 414 | 23 | 52 |
| 798 | preventive medicine | 18 | 413 | 377 | 536 |
| 799 | Corporate governance | 13 | 412 | 112 | 170 |
| 800 | Superconductors | 25 | 411 | 264 | 245 |
| 801 | Adolescent Medicine | 7 | 410 | 294 | 379 |
| 801 | Granular materials | 17 | 410 | 109 | 145 |
| 801 | Cognition | 38 | 410 | 435 | 795 |
| 804 | alcoholism | 15 | 409 | 556 | 615 |
| 805 | Substance Abuse | 17 | 406 | 513 | 550 |
| 806 | Neuropsychiatry | 10 | 404 | 382 | 318 |
| 806 | occupational diseases | 16 | 404 | 226 | 314 |
| 808 | Biological Systems | 18 | 402 | 76 | 143 |
| 809 | drug addiction | 14 | 401 | 451 | 521 |
| 810 | Cryptography | 22 | 400 | 100 | 95 |
| 810 | Vocational guidance | 10 | 400 | 447 | 461 |
| 812 | probabilities | 42 | 399 | 294 | 392 |
| 813 | Small Business | 10 | 398 | 347 | 547 |
| 814 | Emergency Medicine | 30 | 397 | 297 | 373 |
| 815 | Genetic markers | 12 | 392 | 29 | 20 |
| 816 | Raman spectroscopy | 19 | 391 | 167 | 241 |
| 817 | gene transfer | 22 | 388 | 15 | 55 |
| 817 | genetic transformation | 22 | 388 | 15 | 55 |
| 819 | Hearing | 14 | 387 | 263 | 231 |
| 820 | anesthesia | 37 | 385 | 34 | 49 |
| 821 | Health Information Management | 5 | 383 | 171 | 268 |
| 822 | Horticulture | 17 | 382 | 222 | 198 |
| 823 | Cheminformatics | 7 | 379 | 128 | 182 |
| 824 | embryonic development | 13 | 378 | 118 | 140 |
| 825 | Linguistics | 33 | 375 | 320 | 471 |
| 825 | Algorithms | 16 | 375 | 180 | 163 |
| 825 | Psychopharmacology | 16 | 375 | 578 | 755 |
| 825 | Invertebrates | 8 | 375 | 309 | 179 |
| 825 | Neurons | 6 | 375 | 387 | 614 |
| 830 | health behavior | 28 | 374 | 197 | 363 |
| 831 | Microscopy | 18 | 372 | 418 | 461 |
| 832 | Computer Engineering | 26 | 371 | 106 | 200 |
| 832 | Ethnology | 31 | 371 | 289 | 377 |
| 834 | Molecular Microbiology | 19 | 370 | 295 | 559 |
| 835 | carbon monoxide | 14 | 369 | 41 | 130 |
| 836 | Restoration Ecology | 8 | 368 | 203 | 157 |
| 836 | Attention | 20 | 368 | 535 | 685 |
| 838 | Energy metabolism | 12 | 367 | 280 | 349 |
| 839 | Dentistry | 36 | 364 | 124 | 190 |
| 839 | Cross-Cultural Studies | 16 | 364 | 140 | 190 |
| 839 | Sexual health | 40 | 364 | 86 | 219 |
| 842 | Visual Perception | 17 | 361 | 561 | 656 |
| 843 | Combustion | 17 | 357 | 467 | 579 |
| 843 | Chromosomes | 16 | 357 | 277 | 439 |
| 845 | DNA methylation | 12 | 356 | 62 | 121 |
| 846 | Ornithology | 30 | 354 | 233 | 335 |
| 846 | Calorimetry | 20 | 354 | 297 | 347 |
| 846 | Thermal analysis | 20 | 354 | 297 | 347 |
| 849 | social science | 3 | 353 | 174 | 89 |
| 850 | Birds | 29 | 352 | 300 | 407 |
| 851 | Adaptive control systems | 19 | 351 | 124 | 132 |
| 851 | Securities | 27 | 351 | 5 | 95 |
| 853 | Radioisotopes | 32 | 350 | 174 | 264 |
| 853 | musculoskeletal system | 22 | 350 | 4 | 44 |
| 855 | Educational Technology | 30 | 349 | 292 | 691 |
| 856 | World Wide Web | 18 | 348 | 42 | 58 |
| 857 | Organizational Behavior | 7 | 345 | 351 | 392 |
| 858 | Health Education | 22 | 344 | 587 | 725 |
| 858 | Astrocytes | 9 | 344 | 228 | 315 |
| 860 | Ferroelectricity | 62 | 340 | 103 | 286 |
| 861 | optical devices | 17 | 339 | 87 | 107 |
| 862 | Communication in medicine | 9 | 337 | 258 | 201 |
| 863 | older people | 32 | 336 | 368 | 485 |
| 864 | Osteoporosis | 10 | 330 | 98 | 98 |
| 864 | rare diseases | 22 | 330 | 127 | 266 |
| 864 | heredity | 20 | 330 | 133 | 226 |
| 867 | Soft Condensed Matter | 22 | 327 | 349 | 534 |
| 868 | Long-Term Care | 9 | 323 | 237 | 273 |
| 868 | Long-term care facilities | 9 | 323 | 234 | 273 |
| 870 | Social policy | 23 | 321 | 246 | 354 |
| 871 | Mining Engineering | 5 | 319 | 374 | 234 |
| 871 | animals | 27 | 319 | 260 | 420 |
| 873 | radar | 25 | 318 | 23 | 38 |
| 873 | Sonar | 25 | 318 | 21 | 30 |
| 873 | Ultrasound | 20 | 318 | 207 | 301 |
| 873 | Speech | 11 | 318 | 429 | 478 |
| 873 | Navigation | 26 | 318 | 36 | 50 |
| 878 | Fluorescence spectroscopy | 21 | 317 | 23 | 65 |
| 879 | Flexible electronics | 7 | 315 | 21 | 35 |
| 880 | Biomechanics | 26 | 311 | 323 | 634 |
| 881 | Otolaryngology | 27 | 308 | 113 | 204 |
| 882 | Breeding | 12 | 307 | 541 | 587 |
| 883 | Cell surface receptors | 34 | 300 | 1 | 8 |
| 884 | Multiple sclerosis | 24 | 299 | 94 | 137 |
| 885 | Nonlinear mechanics | 18 | 297 | 77 | 140 |
| 885 | Bacterial diseases | 16 | 297 | 17 | 88 |
| 887 | Biomass | 9 | 296 | 261 | 387 |
| 888 | Contraception | 10 | 292 | 258 | 251 |
| 888 | Food preferences | 5 | 292 | 260 | 193 |
| 890 | Civil Engineering | 18 | 291 | 510 | 400 |
| 891 | Futures | 14 | 290 | 62 | 91 |
| 892 | Smoking | 15 | 289 | 262 | 421 |
| 892 | Taste | 9 | 289 | 112 | 108 |
| 892 | flavor | 9 | 289 | 64 | 70 |
| 892 | smell | 9 | 289 | 112 | 108 |
| 896 | Library Science | 12 | 287 | 336 | 168 |
| 896 | Birth control | 9 | 287 | 179 | 196 |
| 898 | Technology Assessment | 10 | 286 | 73 | 213 |
| 899 | Information Retrieval | 17 | 285 | 95 | 229 |
| 900 | Nonlinear systems | 28 | 283 | 84 | 238 |
| 901 | Production Engineering | 14 | 282 | 850 | 853 |
| 902 | Logic | 43 | 281 | 23 | 106 |
| 903 | Bioremediation | 15 | 280 | 161 | 391 |
| 903 | land degradation | 9 | 280 | 169 | 214 |
| 903 | drug toxicity | 12 | 280 | 82 | 158 |
| 903 | degradation | 9 | 280 | 169 | 214 |
| 907 | Transnational corporations | 17 | 279 | 35 | 122 |
| 908 | Integrative Medicine | 31 | 278 | 37 | 51 |
| 909 | Protein engineering | 3 | 277 | 209 | 106 |
| 909 | molecular design | 3 | 277 | 226 | 107 |
| 911 | Psycholinguistics | 20 | 275 | 302 | 561 |
| 912 | Screening | 20 | 274 | 11 | 37 |
| 913 | amino acids | 8 | 273 | 250 | 260 |
| 914 | Antigens | 23 | 272 | 185 | 367 |
| 914 | toxicity testing | 15 | 272 | 122 | 237 |
| 916 | analysis | 8 | 271 | 210 | 226 |
| 917 | Ecological Genetics | 28 | 270 | 53 | 182 |
| 917 | Mineral resources | 10 | 270 | 192 | 337 |
| 917 | Cytokine | 9 | 270 | 138 | 250 |
| 917 | liver | 15 | 270 | 58 | 93 |
| 921 | Philosophy | 55 | 269 | 300 | 463 |
| 921 | Pediatric Neurology | 7 | 269 | 529 | 664 |
| 921 | Child welfare | 11 | 269 | 470 | 475 |
| 921 | peptides | 21 | 269 | 122 | 231 |
| 925 | East Asia | 20 | 267 | 100 | 108 |
| 926 | Regeneration | 20 | 266 | 7 | 11 |
| 926 | Approximation Theory | 41 | 266 | 28 | 120 |
| 928 | Speech Disorders | 10 | 263 | 551 | 543 |
| 928 | Porous materials | 12 | 263 | 235 | 208 |
| 930 | Veterinary Immunology | 9 | 262 | 149 | 145 |
| 931 | Aerosols | 4 | 261 | 440 | 254 |
| 932 | cross-cultural comparison | 13 | 257 | 129 | 160 |
| 933 | Growth factors | 8 | 256 | 87 | 206 |
| 934 | Discourse Analysis | 9 | 255 | 156 | 164 |
| 934 | Bifurcation Theory | 12 | 255 | 47 | 79 |
| 936 | cosmic rays | 13 | 254 | 146 | 149 |
| 936 | infrared radiation | 87 | 254 | 11 | 148 |
| 938 | Health Services Administration | 12 | 253 | 378 | 465 |
| 938 | Microcirculation | 17 | 253 | 99 | 218 |
| 938 | Coding Theory | 14 | 253 | 98 | 70 |
| 941 | pain management | 15 | 252 | 180 | 281 |
| 942 | biofuels | 5 | 250 | 168 | 239 |
| 943 | Ventilation | 16 | 247 | 128 | 221 |
| 944 | Sustainable agriculture | 17 | 246 | 152 | 369 |
| 944 | Apoptosis | 11 | 246 | 51 | 92 |
| 944 | neurotoxins | 11 | 246 | 51 | 92 |
| 944 | Neurotoxic agents | 11 | 246 | 51 | 92 |
| 944 | Nerve regeneration | 11 | 246 | 51 | 92 |
| 949 | Algal blooms | 5 | 245 | 171 | 185 |
| 949 | Cyanobacteria | 5 | 245 | 171 | 185 |
| 949 | microalgae | 5 | 245 | 171 | 185 |
| 952 | Political Science | 26 | 244 | 560 | 737 |
| 952 | venom | 14 | 244 | 212 | 360 |
| 952 | Toxins | 14 | 244 | 243 | 403 |
| 955 | Cognitive Therapy | 9 | 243 | 293 | 327 |
| 956 | transgenic organisms | 9 | 242 | 50 | 102 |
| 956 | indoor air pollution | 15 | 242 | 83 | 189 |
| 956 | Sick building syndrome | 15 | 242 | 83 | 189 |
| 959 | mutation | 11 | 239 | 201 | 378 |
| 959 | counseling | 13 | 239 | 571 | 625 |
| 959 | disease susceptibility | 7 | 239 | 7 | 17 |
| 959 | Blood vessels | 16 | 239 | 57 | 172 |
| 959 | symptoms | 7 | 239 | 7 | 17 |
| 959 | Aquatic ecology | 21 | 239 | 215 | 474 |
| 965 | Occupational Health | 12 | 238 | 399 | 431 |
| 965 | Geriatric Psychiatry | 14 | 238 | 352 | 492 |
| 965 | Transgenic plants | 9 | 238 | 149 | 235 |
| 965 | Exercise | 13 | 238 | 651 | 739 |
| 969 | Eastern Europe | 22 | 237 | 140 | 186 |
| 970 | Bibliometrics | 14 | 235 | 24 | 61 |
| 970 | Extreme environments | 12 | 235 | 28 | 125 |
| 972 | Number Theory | 35 | 234 | 113 | 156 |
| 972 | cryosphere | 17 | 234 | 127 | 246 |
| 972 | antibiotics | 10 | 234 | 53 | 76 |
| 975 | clay | 11 | 233 | 316 | 571 |
| 976 | Landslides | 8 | 232 | 89 | 181 |
| 977 | Sensor Networks | 12 | 231 | 45 | 74 |
| 977 | isomerism | 16 | 231 | 51 | 103 |
| 977 | Chirality | 16 | 231 | 51 | 103 |
| 980 | Laser therapy | 32 | 230 | 42 | 115 |
| 980 | Neuromuscular diseases | 8 | 230 | 310 | 334 |
| 980 | Eurasia | 7 | 230 | 82 | 52 |
| 980 | planning | 13 | 230 | 215 | 278 |
| 984 | Flexible manufacturing systems | 3 | 229 | 399 | 178 |
| 985 | Neuroplasticity | 13 | 228 | 26 | 127 |
| 985 | feeding behavior | 6 | 228 | 475 | 486 |
| 985 | India | 16 | 228 | 363 | 267 |
| 985 | Appetite | 6 | 228 | 410 | 432 |
| 989 | Music | 11 | 227 | 390 | 318 |
| 989 | voice | 11 | 227 | 181 | 209 |
| 989 | blood transfusion | 12 | 227 | 247 | 291 |
| 992 | Cosmology | 16 | 225 | 211 | 378 |
| 992 | stocks | 16 | 225 | 3 | 55 |
| 994 | Telemedicine | 7 | 224 | 138 | 149 |
| 994 | Export Marketing | 4 | 224 | 143 | 159 |
| 996 | Mental Health Services | 8 | 222 | 650 | 610 |
| 997 | Microfabrication | 8 | 220 | 142 | 140 |
| 998 | Sports Medicine | 22 | 218 | 880 | 1,253 |
| 999 | Pesticides | 6 | 217 | 391 | 271 |
| 999 | Cosmochemistry | 13 | 217 | 361 | 592 |