| 1 | Biology | 2,865 | 287.7K | 78 | 80 |
| 2 | Physics | 3,445 | 286.9K | 85 | 89 |
| 3 | Science | 2,989 | 270.3K | 71 | 88 |
| 4 | Chemistry | 2,565 | 164.2K | 114 | 103 |
| 5 | Biochemistry | 3,358 | 162.6K | 60 | 61 |
| 6 | Natural history | 670 | 145.2K | 70 | 86 |
| 7 | Molecular Biology | 2,151 | 135.5K | 61 | 90 |
| 8 | Medicine | 2,325 | 124.2K | 105 | 116 |
| 9 | Ecology | 1,581 | 113.8K | 48 | 49 |
| 10 | Human genetics | 411 | 109.0K | 52 | 50 |
| 11 | Research | 2,231 | 96.9K | 55 | 54 |
| 12 | Astrophysics | 1,108 | 84.5K | 97 | 93 |
| 13 | Astronomy | 1,083 | 81.5K | 107 | 90 |
| 14 | Neurology | 1,021 | 76.0K | 143 | 123 |
| 15 | Genetics | 767 | 74.0K | 63 | 53 |
| 16 | Microbiology | 1,072 | 73.0K | 115 | 103 |
| 17 | Solid State Physics | 2,004 | 70.1K | 35 | 42 |
| 18 | Condensed Matter | 1,850 | 67.9K | 36 | 44 |
| 19 | Pharmacology | 1,431 | 67.0K | 24 | 21 |
| 20 | Nuclear Physics | 2,091 | 61.9K | 73 | 114 |
| 21 | Cytology | 640 | 49.2K | 126 | 143 |
| 22 | Immunology | 873 | 46.8K | 75 | 99 |
| 23 | Biophysics | 1,099 | 46.7K | 70 | 61 |
| 24 | Biotechnology | 382 | 44.5K | 251 | 92 |
| 25 | Materials | 768 | 44.3K | 213 | 171 |
| 26 | Cell Biology | 499 | 44.1K | 143 | 155 |
| 27 | Computational Biology | 210 | 43.6K | 90 | 24 |
| 28 | Diabetes | 478 | 39.4K | 21 | 18 |
| 29 | Metabolism | 466 | 39.2K | 56 | 39 |
| 30 | Psychiatry | 591 | 38.6K | 118 | 97 |
| 31 | genome | 119 | 38.5K | 82 | 25 |
| 32 | Diabetes mellitus | 435 | 37.1K | 20 | 18 |
| 33 | Pharmaceutical Chemistry | 674 | 37.0K | 27 | 24 |
| 34 | Evolution | 500 | 37.0K | 9 | 7 |
| 35 | Endocrinology | 532 | 36.9K | 77 | 69 |
| 36 | Physiology | 1,104 | 36.9K | 41 | 72 |
| 37 | Bioinformatics | 124 | 36.2K | 131 | 24 |
| 38 | Bioengineering | 198 | 35.9K | 277 | 77 |
| 39 | biological evolution | 525 | 35.8K | 16 | 29 |
| 40 | Botany | 1,021 | 35.7K | 38 | 88 |
| 41 | Cancer | 646 | 34.7K | 62 | 73 |
| 42 | Nutrition | 445 | 34.5K | 101 | 37 |
| 43 | Environment | 418 | 33.1K | 158 | 148 |
| 44 | Aging | 163 | 33.1K | 221 | 17 |
| 45 | Psychology | 741 | 32.1K | 108 | 123 |
| 46 | Pharmacy | 439 | 32.0K | 11 | 1 |
| 47 | Medical genetics | 442 | 31.6K | 82 | 82 |
| 48 | Biochemical Engineering | 103 | 31.2K | 352 | 68 |
| 49 | Public Health | 792 | 29.4K | 102 | 130 |
| 50 | Geophysics | 774 | 29.1K | 117 | 125 |
| 51 | Geriatrics | 158 | 28.1K | 238 | 31 |
| 52 | Environmental Health | 429 | 25.6K | 155 | 137 |
| 53 | Virology | 420 | 25.6K | 100 | 183 |
| 54 | Nanotechnology | 537 | 25.5K | 191 | 222 |
| 55 | Molecular Genetics | 376 | 25.5K | 12 | 13 |
| 56 | Toxicology | 642 | 25.3K | 46 | 44 |
| 57 | Spectrum analysis | 471 | 24.7K | 128 | 157 |
| 58 | Molecular ecology | 288 | 24.6K | 3 | 3 |
| 59 | Signal Processing | 301 | 24.1K | 101 | 57 |
| 60 | drug therapy | 451 | 23.5K | 22 | 14 |
| 61 | Animal Behavior | 368 | 23.0K | 41 | 33 |
| 62 | Psychophysiology | 327 | 22.9K | 129 | 94 |
| 63 | Epidemiology | 689 | 22.6K | 51 | 81 |
| 64 | Biocompatible Materials | 426 | 22.3K | 125 | 131 |
| 65 | Materials Science | 477 | 21.5K | 183 | 179 |
| 66 | Behavior | 270 | 21.3K | 139 | 82 |
| 67 | Hematology | 438 | 20.9K | 135 | 136 |
| 68 | Surgery | 225 | 20.7K | 83 | 77 |
| 69 | Pathology | 541 | 20.4K | 19 | 38 |
| 70 | Genomics | 464 | 20.4K | 30 | 41 |
| 71 | Mental Disorders | 378 | 20.3K | 81 | 93 |
| 72 | Computational Chemistry | 35 | 20.2K | 46 | 11 |
| 73 | Population Genetics | 295 | 19.9K | 6 | 7 |
| 73 | Ethology | 298 | 19.9K | 28 | 25 |
| 75 | human behavior | 271 | 19.9K | 68 | 67 |
| 76 | Clinical Chemistry | 421 | 19.7K | 25 | 29 |
| 77 | Nanostructured Materials | 480 | 19.4K | 64 | 78 |
| 78 | Bacteriology | 294 | 19.2K | 44 | 60 |
| 79 | Microbial Ecology | 196 | 18.7K | 98 | 81 |
| 80 | Pollution | 362 | 18.7K | 227 | 267 |
| 81 | Catalysis | 465 | 18.7K | 134 | 175 |
| 82 | Metabolic diseases | 273 | 18.6K | 89 | 97 |
| 83 | Geology | 463 | 18.2K | 109 | 115 |
| 84 | Physical Chemistry | 264 | 17.7K | 47 | 36 |
| 85 | Parenteral nutrition | 99 | 17.7K | 25 | 6 |
| 86 | Solar Energy | 238 | 17.1K | 6 | 5 |
| 87 | Molecular evolution | 313 | 16.6K | 7 | 29 |
| 88 | solar cells | 209 | 16.6K | 7 | 5 |
| 89 | Electrochemistry | 507 | 16.5K | 87 | 70 |
| 90 | Cardiovascular system | 167 | 16.4K | 89 | 79 |
| 91 | Enteral nutrition | 89 | 16.4K | 13 | 6 |
| 92 | Data Mining | 52 | 16.3K | 108 | 8 |
| 93 | Colloids | 381 | 16.2K | 122 | 108 |
| 94 | data collection | 40 | 16.2K | 63 | 7 |
| 95 | Hydrology | 242 | 16.0K | 75 | 44 |
| 96 | Brain | 315 | 15.8K | 105 | 109 |
| 97 | Neurophysiology | 259 | 15.8K | 179 | 177 |
| 98 | Hypertension | 166 | 15.6K | 95 | 74 |
| 99 | International Relations | 240 | 15.4K | 12 | 1 |
| 100 | Immunity | 323 | 15.4K | 39 | 158 |
| 101 | gene mapping | 213 | 15.3K | 46 | 46 |
| 102 | Europe | 585 | 14.5K | 25 | 25 |
| 103 | Surface Chemistry | 391 | 14.4K | 111 | 117 |
| 104 | Analytical Chemistry | 429 | 14.4K | 133 | 149 |
| 105 | solar power | 172 | 14.4K | 5 | 3 |
| 106 | Therapeutics | 291 | 14.3K | 23 | 27 |
| 107 | Polymers | 311 | 14.3K | 324 | 237 |
| 108 | drugs | 323 | 14.2K | 10 | 5 |
| 109 | peace | 162 | 14.2K | 2 | 2 |
| 110 | Molecular structure | 175 | 14.1K | 56 | 44 |
| 111 | Organic Chemistry | 298 | 14.0K | 86 | 51 |
| 112 | Oceanography | 191 | 14.0K | 118 | 70 |
| 113 | Developmental Biology | 210 | 14.0K | 119 | 129 |
| 114 | Chemical Engineering | 183 | 12.9K | 471 | 278 |
| 115 | United States | 168 | 12.9K | 440 | 205 |
| 116 | Earth Sciences | 182 | 12.8K | 188 | 111 |
| 117 | management | 246 | 12.7K | 119 | 194 |
| 118 | Diet | 178 | 12.6K | 98 | 76 |
| 119 | Pharmaceutical Technology | 251 | 12.4K | 5 | 3 |
| 120 | Plant Ecology | 219 | 12.3K | 21 | 27 |
| 121 | Meteorology | 240 | 12.1K | 136 | 135 |
| 122 | Economics | 345 | 12.0K | 190 | 158 |
| 123 | Nervous system | 149 | 11.9K | 167 | 123 |
| 124 | conflict management | 112 | 11.7K | 2 | 1 |
| 125 | International security | 107 | 11.7K | 1 | 1 |
| 126 | Statistics | 198 | 11.6K | 143 | 85 |
| 127 | Mathematics | 627 | 11.6K | 245 | 175 |
| 128 | psychotherapy | 191 | 11.4K | 30 | 33 |
| 129 | Statistical physics | 455 | 11.4K | 165 | 198 |
| 130 | Pharmacokinetics | 249 | 11.3K | 2 | 1 |
| 131 | Energy Conversion | 156 | 11.3K | 48 | 83 |
| 132 | United Kingdom | 190 | 11.1K | 48 | 35 |
| 133 | Geography | 306 | 11.1K | 60 | 54 |
| 134 | Neurochemistry | 180 | 10.8K | 151 | 107 |
| 135 | Clinical Pharmacology | 278 | 10.7K | 13 | 8 |
| 136 | Perception | 208 | 10.6K | 87 | 56 |
| 137 | Animal ecology | 186 | 10.5K | 21 | 12 |
| 138 | polymerization | 213 | 10.4K | 357 | 226 |
| 139 | Water | 130 | 10.4K | 181 | 130 |
| 140 | Technology | 223 | 10.4K | 194 | 96 |
| 141 | Neurobiology | 196 | 10.2K | 84 | 119 |
| 142 | Immune system | 271 | 9.8K | 10 | 101 |
| 143 | nucleic acids | 174 | 9.8K | 83 | 162 |
| 144 | Environmental Chemistry | 127 | 9.7K | 81 | 106 |
| 145 | pain | 183 | 9.6K | 45 | 51 |
| 146 | Electronics | 273 | 9.4K | 205 | 163 |
| 147 | proteins | 223 | 9.3K | 46 | 60 |
| 148 | Drug delivery systems | 121 | 9.1K | 24 | 16 |
| 149 | Plant physiology | 242 | 9.0K | 51 | 115 |
| 150 | Chromosome mapping | 154 | 9.0K | 57 | 56 |
| 151 | Leukemia | 109 | 9.0K | 56 | 57 |
| 152 | Psychopharmacology | 246 | 8.9K | 35 | 84 |
| 153 | Obesity | 204 | 8.7K | 83 | 94 |
| 154 | Transplantation | 164 | 8.5K | 63 | 71 |
| 155 | Pediatrics | 142 | 8.5K | 181 | 157 |
| 156 | Learning | 103 | 8.4K | 85 | 45 |
| 157 | Oncology | 163 | 8.4K | 110 | 235 |
| 158 | Plants | 307 | 8.3K | 34 | 148 |
| 159 | Sociology | 237 | 8.3K | 125 | 149 |
| 160 | Zoology | 197 | 8.2K | 108 | 60 |
| 161 | nanoscience | 181 | 8.1K | 194 | 256 |
| 162 | Bioorganic chemistry | 192 | 8.1K | 104 | 110 |
| 163 | Histology | 169 | 8.0K | 55 | 61 |
| 163 | Urology | 78 | 8.0K | 232 | 92 |
| 165 | Environmental Policy | 132 | 7.9K | 171 | 189 |
| 166 | Solid State Chemistry | 261 | 7.9K | 46 | 39 |
| 167 | Environmental Engineering | 135 | 7.8K | 308 | 274 |
| 168 | Planets | 139 | 7.8K | 189 | 161 |
| 169 | Renewable Energy Sources | 125 | 7.8K | 102 | 171 |
| 170 | Obstetrics | 217 | 7.8K | 109 | 101 |
| 171 | Marine Biology | 213 | 7.7K | 135 | 134 |
| 172 | Geochemistry | 171 | 7.6K | 190 | 187 |
| 173 | Crystallography | 136 | 7.6K | 55 | 35 |
| 174 | Proteome | 134 | 7.6K | 24 | 30 |
| 175 | Paleontology | 308 | 7.6K | 15 | 19 |
| 176 | Diagnostic Imaging | 180 | 7.6K | 54 | 62 |
| 177 | Automation | 192 | 7.6K | 103 | 160 |
| 178 | Biomedical Engineering | 210 | 7.5K | 347 | 335 |
| 179 | environmental pollution | 205 | 7.5K | 250 | 319 |
| 180 | Environmental monitoring | 176 | 7.5K | 162 | 203 |
| 181 | Cell differentiation | 114 | 7.5K | 153 | 214 |
| 182 | plant communities | 127 | 7.3K | 21 | 39 |
| 183 | Neuropsychology | 147 | 7.3K | 166 | 118 |
| 184 | Human Geography | 133 | 7.3K | 49 | 28 |
| 185 | fuel cells | 137 | 7.3K | 55 | 84 |
| 186 | Analytical Biochemistry | 142 | 7.3K | 23 | 33 |
| 187 | Nuclear Medicine | 201 | 7.2K | 16 | 26 |
| 188 | Geodynamics | 188 | 7.2K | 11 | 25 |
| 189 | Molecular Pharmacology | 102 | 7.2K | 10 | 6 |
| 190 | Social behavior | 111 | 7.1K | 48 | 40 |
| 191 | Quantum Gravity | 359 | 7.1K | 159 | 286 |
| 192 | Child psychology | 116 | 7.0K | 142 | 132 |
| 193 | Pediatric Neurology | 31 | 6.9K | 222 | 99 |
| 194 | Mental illness | 115 | 6.8K | 157 | 159 |
| 195 | Mathematical Physics | 274 | 6.8K | 109 | 185 |
| 196 | Biodiversity | 167 | 6.7K | 64 | 111 |
| 197 | Critical Care | 98 | 6.7K | 135 | 149 |
| 198 | Critical Care Medicine | 96 | 6.6K | 135 | 149 |
| 199 | Ophthalmology | 146 | 6.5K | 113 | 106 |
| 200 | Medical Microbiology | 137 | 6.5K | 154 | 198 |
| 201 | water supply | 70 | 6.4K | 96 | 53 |
| 202 | Proteomics | 92 | 6.4K | 25 | 19 |
| 203 | Cytogenetics | 83 | 6.3K | 145 | 157 |
| 204 | Embryology | 115 | 6.3K | 143 | 170 |
| 205 | Biodiversity conservation | 75 | 6.2K | 180 | 216 |
| 206 | Sleep Disorders | 166 | 6.2K | 69 | 82 |
| 207 | DNA polymerases | 54 | 6.1K | 27 | 51 |
| 208 | Membranes | 130 | 6.1K | 106 | 122 |
| 209 | Genetic engineering | 87 | 6.0K | 151 | 106 |
| 210 | Child Development | 189 | 6.0K | 99 | 168 |
| 211 | Sleep | 161 | 6.0K | 69 | 94 |
| 212 | Mycology | 120 | 5.9K | 83 | 57 |
| 213 | Pharmacognosy | 92 | 5.9K | 106 | 41 |
| 214 | energy conservation | 68 | 5.8K | 206 | 137 |
| 215 | Virulence | 45 | 5.7K | 178 | 106 |
| 216 | Molecular Microbiology | 91 | 5.7K | 47 | 71 |
| 217 | Quantum Chemistry | 330 | 5.6K | 2 | 3 |
| 218 | Parasitic Diseases | 112 | 5.6K | 117 | 86 |
| 219 | Mass Spectrometry | 151 | 5.6K | 14 | 21 |
| 220 | Primary health care | 259 | 5.5K | 25 | 40 |
| 221 | Environmental Toxicology | 82 | 5.4K | 173 | 131 |
| 222 | Political Science | 177 | 5.4K | 103 | 89 |
| 223 | protein | 86 | 5.4K | 80 | 65 |
| 224 | Anatomy | 105 | 5.4K | 186 | 175 |
| 225 | Optical materials | 126 | 5.3K | 233 | 255 |
| 226 | Attention | 173 | 5.3K | 84 | 85 |
| 227 | environmental protection | 99 | 5.3K | 263 | 212 |
| 228 | Climate change | 47 | 5.2K | 149 | 200 |
| 229 | Memory | 169 | 5.2K | 99 | 128 |
| 230 | Eutrophication | 46 | 5.2K | 150 | 200 |
| 231 | Psychometrics | 34 | 5.2K | 67 | 34 |
| 232 | Scandinavia | 321 | 5.2K | 7 | 13 |
| 233 | Water pollution | 101 | 5.2K | 257 | 243 |
| 234 | arthritis | 100 | 5.1K | 103 | 125 |
| 235 | Business | 86 | 5.1K | 157 | 192 |
| 236 | Electrophoresis | 153 | 5.1K | 22 | 25 |
| 237 | Energy Policy | 83 | 5.1K | 230 | 205 |
| 238 | Ecosystem management | 37 | 5.0K | 61 | 17 |
| 239 | Optics | 295 | 5.0K | 361 | 391 |
| 240 | Radiobiology | 150 | 4.9K | 82 | 117 |
| 241 | Growth | 84 | 4.9K | 134 | 184 |
| 242 | Medical Laboratory Science | 92 | 4.9K | 164 | 172 |
| 243 | miniaturization | 85 | 4.9K | 209 | 236 |
| 244 | natural products | 55 | 4.9K | 188 | 45 |
| 245 | Photonics | 45 | 4.9K | 449 | 221 |
| 246 | Host-parasite interactions | 40 | 4.9K | 222 | 156 |
| 247 | Visual Perception | 157 | 4.9K | 86 | 89 |
| 248 | gene therapy | 56 | 4.9K | 103 | 53 |
| 249 | actuators | 132 | 4.8K | 88 | 105 |
| 249 | transducers | 132 | 4.8K | 88 | 105 |
| 251 | Neurons | 34 | 4.8K | 127 | 173 |
| 252 | Environmental Microbiology | 67 | 4.8K | 96 | 88 |
| 253 | infection | 87 | 4.7K | 101 | 78 |
| 254 | marketing | 79 | 4.7K | 169 | 178 |
| 255 | Telecommunication | 78 | 4.6K | 378 | 261 |
| 256 | Fungi | 76 | 4.6K | 68 | 48 |
| 257 | rehabilitation | 193 | 4.6K | 79 | 139 |
| 258 | Molecular Imaging | 94 | 4.6K | 33 | 40 |
| 259 | Food | 107 | 4.6K | 254 | 225 |
| 260 | Green Chemistry | 87 | 4.6K | 152 | 158 |
| 261 | Genetic therapy | 65 | 4.5K | 95 | 56 |
| 262 | Image Processing | 93 | 4.5K | 222 | 200 |
| 263 | Long-Term Care | 15 | 4.5K | 158 | 28 |
| 264 | Regional Planning | 123 | 4.5K | 52 | 60 |
| 264 | disease outbreaks | 52 | 4.5K | 27 | 17 |
| 264 | Epidemics | 52 | 4.5K | 26 | 17 |
| 267 | Radioisotopes | 215 | 4.5K | 6 | 7 |
| 268 | plant molecular biology | 47 | 4.5K | 300 | 250 |
| 269 | Plant cells | 42 | 4.5K | 280 | 271 |
| 270 | Orthopedics | 125 | 4.4K | 94 | 91 |
| 271 | Light | 33 | 4.4K | 165 | 114 |
| 272 | X-ray crystallography | 65 | 4.4K | 35 | 26 |
| 273 | biological factors | 67 | 4.4K | 139 | 53 |
| 274 | Phylogeny | 78 | 4.4K | 38 | 39 |
| 275 | Nursing | 184 | 4.4K | 49 | 44 |
| 276 | Clinical Laboratory Science | 160 | 4.3K | 9 | 6 |
| 277 | Long-term care facilities | 10 | 4.3K | 216 | 30 |
| 278 | Infections | 73 | 4.3K | 67 | 68 |
| 279 | viruses | 87 | 4.3K | 191 | 223 |
| 280 | Chromatographic analysis | 150 | 4.3K | 42 | 27 |
| 281 | software | 90 | 4.3K | 7 | 3 |
| 282 | Chromatography | 153 | 4.2K | 25 | 19 |
| 283 | Energy Storage | 122 | 4.2K | 31 | 62 |
| 284 | Molecules | 153 | 4.1K | 34 | 66 |
| 285 | Environmental Psychology | 24 | 4.1K | 24 | 11 |
| 286 | Social Psychology | 75 | 4.1K | 315 | 277 |
| 287 | Radio | 70 | 4.0K | 226 | 187 |
| 288 | Medical Physics | 119 | 4.0K | 152 | 169 |
| 289 | Cardiovascular diseases | 152 | 4.0K | 55 | 70 |
| 290 | Developmental Immunology | 83 | 4.0K | 12 | 6 |
| 291 | Metallurgy | 104 | 4.0K | 270 | 240 |
| 292 | Medical Anthropology | 81 | 3.9K | 114 | 132 |
| 293 | Drug design | 67 | 3.9K | 96 | 51 |
| 294 | Paleoclimatology | 90 | 3.9K | 54 | 54 |
| 295 | Amyloidosis | 50 | 3.9K | 8 | 4 |
| 296 | Health Education | 120 | 3.9K | 137 | 124 |
| 297 | Child | 147 | 3.9K | 152 | 160 |
| 298 | Reproduction | 124 | 3.9K | 183 | 212 |
| 299 | Developmental Psychology | 78 | 3.9K | 100 | 113 |
| 300 | Cognitive Science | 71 | 3.8K | 113 | 132 |
| 301 | Environmental Law | 64 | 3.8K | 69 | 94 |
| 302 | Synaptic Transmission | 92 | 3.8K | 7 | 6 |
| 303 | Sustainable Engineering | 72 | 3.8K | 126 | 104 |
| 304 | Health Policy | 147 | 3.7K | 127 | 156 |
| 305 | Lipids | 75 | 3.7K | 73 | 91 |
| 306 | Respiration | 106 | 3.7K | 103 | 135 |
| 307 | mathematical analysis | 161 | 3.7K | 130 | 60 |
| 308 | Metals | 91 | 3.7K | 256 | 239 |
| 309 | Antigens | 67 | 3.7K | 43 | 34 |
| 310 | freshwater biology | 95 | 3.7K | 10 | 29 |
| 311 | Thrombosis | 87 | 3.6K | 61 | 75 |
| 312 | Economic History | 203 | 3.6K | 153 | 185 |
| 313 | Alzheimer's disease | 78 | 3.6K | 236 | 107 |
| 314 | Social Sciences | 189 | 3.6K | 183 | 197 |
| 315 | Parasitology | 83 | 3.6K | 273 | 177 |
| 316 | Microelectronics | 86 | 3.5K | 224 | 279 |
| 317 | energy resources | 46 | 3.5K | 149 | 143 |
| 318 | Allergy | 71 | 3.5K | 121 | 242 |
| 319 | behavior therapy | 65 | 3.5K | 92 | 64 |
| 320 | Education | 183 | 3.5K | 293 | 310 |
| 320 | Recombinant DNA | 60 | 3.5K | 117 | 66 |
| 322 | Climatology | 74 | 3.4K | 235 | 229 |
| 323 | Antibodies | 56 | 3.4K | 30 | 17 |
| 324 | free radicals | 48 | 3.4K | 158 | 142 |
| 325 | city planning | 97 | 3.4K | 99 | 90 |
| 326 | Quality of life | 68 | 3.4K | 74 | 89 |
| 327 | Entomology | 80 | 3.3K | 310 | 155 |
| 328 | Molecular cloning | 54 | 3.3K | 120 | 62 |
| 329 | Environmental pollutants | 105 | 3.3K | 100 | 138 |
| 330 | Genetic recombination | 53 | 3.3K | 116 | 62 |
| 331 | Kinetics | 97 | 3.2K | 3 | 4 |
| 332 | pain management | 77 | 3.2K | 19 | 16 |
| 333 | feeding behavior | 46 | 3.1K | 66 | 35 |
| 334 | Magnetic Resonance Spectroscopy | 77 | 3.1K | 107 | 74 |
| 335 | Medical Oncology | 70 | 3.1K | 229 | 240 |
| 336 | Sustainable Development | 43 | 3.1K | 215 | 136 |
| 337 | Medicinal plants | 42 | 3.1K | 175 | 74 |
| 338 | Cognition | 78 | 3.0K | 236 | 239 |
| 339 | Pregnancy | 101 | 3.0K | 11 | 21 |
| 340 | Radiation | 105 | 3.0K | 118 | 98 |
| 341 | enzymes | 50 | 3.0K | 179 | 103 |
| 342 | Parasites | 52 | 3.0K | 169 | 90 |
| 343 | soil microbiology | 42 | 2.9K | 261 | 233 |
| 343 | Ornithology | 104 | 2.9K | 53 | 38 |
| 345 | Oncogenes | 42 | 2.9K | 226 | 254 |
| 346 | Combinatorial chemistry | 39 | 2.9K | 98 | 64 |
| 347 | cell physiology | 49 | 2.9K | 240 | 257 |
| 348 | Birds | 99 | 2.8K | 81 | 58 |
| 349 | Biogeochemistry | 46 | 2.8K | 197 | 186 |
| 350 | nuclear magnetic resonance | 62 | 2.8K | 142 | 87 |
| 351 | Hormones | 96 | 2.8K | 62 | 118 |
| 352 | Gerontology | 97 | 2.8K | 220 | 179 |
| 353 | Genetic regulation | 46 | 2.8K | 143 | 191 |
| 354 | Immunotherapy | 61 | 2.7K | 219 | 306 |
| 355 | Tribology | 72 | 2.7K | 91 | 57 |
| 356 | Medical Ethics | 106 | 2.7K | 62 | 27 |
| 357 | personality | 48 | 2.7K | 268 | 253 |
| 358 | Conservation Biology | 70 | 2.7K | 79 | 121 |
| 359 | Immunopathology | 75 | 2.7K | 113 | 122 |
| 360 | Cosmology | 70 | 2.7K | 143 | 61 |
| 361 | sanitation | 51 | 2.7K | 281 | 374 |
| 362 | Informatics | 75 | 2.6K | 14 | 47 |
| 363 | Appetite | 35 | 2.6K | 71 | 37 |
| 364 | disease vectors | 46 | 2.6K | 94 | 43 |
| 365 | Dementia | 69 | 2.6K | 251 | 121 |
| 366 | Nuclear Fusion | 117 | 2.6K | 59 | 53 |
| 367 | Developing countries | 113 | 2.6K | 117 | 199 |
| 368 | Rheumatology | 73 | 2.6K | 107 | 175 |
| 369 | Philosophy | 223 | 2.6K | 70 | 64 |
| 369 | Microorganisms | 23 | 2.6K | 216 | 143 |
| 371 | Atmospheric Physics | 112 | 2.6K | 194 | 303 |
| 372 | Economic Development | 66 | 2.6K | 151 | 197 |
| 373 | Archaeology | 99 | 2.5K | 119 | 113 |
| 374 | organization | 38 | 2.5K | 109 | 154 |
| 375 | Eating Disorders | 89 | 2.5K | 56 | 74 |
| 376 | Health Services Research | 160 | 2.5K | 67 | 161 |
| 377 | Gene expression regulation | 55 | 2.5K | 80 | 156 |
| 378 | Histochemistry | 63 | 2.5K | 51 | 38 |
| 379 | human development | 45 | 2.5K | 92 | 83 |
| 380 | Geobiology | 47 | 2.5K | 25 | 6 |
| 380 | counseling | 62 | 2.5K | 164 | 108 |
| 382 | Muscles | 59 | 2.5K | 66 | 70 |
| 383 | pollutants | 92 | 2.5K | 93 | 173 |
| 384 | Aquaculture | 39 | 2.5K | 301 | 158 |
| 385 | Nonlinear Dynamics | 99 | 2.5K | 302 | 333 |
| 386 | Stem cells | 61 | 2.5K | 195 | 225 |
| 387 | Wireless Communication Systems | 79 | 2.5K | 313 | 296 |
| 388 | fertility | 52 | 2.5K | 141 | 145 |
| 389 | Feeding and Eating Disorders | 84 | 2.4K | 54 | 73 |
| 390 | histological techniques | 37 | 2.4K | 65 | 49 |
| 391 | Patient education | 57 | 2.4K | 35 | 43 |
| 392 | Vaccines | 55 | 2.4K | 271 | 221 |
| 393 | Infertility | 49 | 2.4K | 134 | 139 |
| 394 | Housing | 65 | 2.4K | 18 | 15 |
| 395 | Autoimmunity | 62 | 2.4K | 36 | 73 |
| 396 | Engineering | 87 | 2.4K | 570 | 437 |
| 397 | Reproductive health | 133 | 2.3K | 6 | 26 |
| 398 | Audiology | 60 | 2.3K | 98 | 80 |
| 399 | Pharmacogenetics | 47 | 2.3K | 79 | 71 |
| 400 | Water quality management | 56 | 2.3K | 195 | 103 |
| 401 | Clinical Psychology | 40 | 2.3K | 293 | 288 |
| 402 | Radio waves | 23 | 2.3K | 303 | 124 |
| 403 | vascular diseases | 37 | 2.3K | 95 | 97 |
| 404 | Biogeography | 38 | 2.3K | 147 | 175 |
| 405 | drug resistance | 23 | 2.3K | 72 | 11 |
| 406 | Random graphs | 61 | 2.3K | 5 | 3 |
| 407 | Public Policy | 81 | 2.2K | 146 | 177 |
| 408 | Biogeochemical cycles | 19 | 2.2K | 121 | 88 |
| 409 | Petrology | 78 | 2.2K | 113 | 191 |
| 410 | Women's health | 84 | 2.2K | 74 | 75 |
| 411 | Diagnostic microbiology | 45 | 2.2K | 200 | 304 |
| 412 | Solar power plants | 37 | 2.2K | 12 | 11 |
| 412 | Photovoltaic Cells | 37 | 2.2K | 12 | 11 |
| 414 | Ventilation | 54 | 2.2K | 21 | 21 |
| 415 | Mineralogy | 88 | 2.2K | 150 | 223 |
| 416 | Infection control | 78 | 2.2K | 13 | 24 |
| 417 | indoor air pollution | 52 | 2.2K | 12 | 18 |
| 417 | Sick building syndrome | 52 | 2.2K | 12 | 18 |
| 419 | Medical Technology | 72 | 2.2K | 84 | 106 |
| 420 | Biosensors | 56 | 2.2K | 118 | 205 |
| 420 | Emotions | 22 | 2.2K | 143 | 74 |
| 422 | commerce | 44 | 2.1K | 171 | 192 |
| 423 | Health | 106 | 2.1K | 168 | 262 |
| 424 | air quality management | 48 | 2.1K | 11 | 18 |
| 425 | Cell death | 36 | 2.1K | 226 | 273 |
| 426 | Environmental Education | 42 | 2.1K | 9 | 4 |
| 427 | Microscopy | 77 | 2.1K | 123 | 112 |
| 428 | Nanostructures | 57 | 2.1K | 244 | 337 |
| 429 | Plant Morphology | 48 | 2.1K | 31 | 10 |
| 430 | Sound | 49 | 2.1K | 119 | 94 |
| 431 | risk factors | 85 | 2.1K | 22 | 56 |
| 431 | Biometrics | 41 | 2.1K | 197 | 130 |
| 433 | Clinical Immunology | 60 | 2.1K | 116 | 111 |
| 434 | Photochemistry | 50 | 2.1K | 198 | 139 |
| 435 | international cooperation | 46 | 2.1K | 33 | 37 |
| 436 | Developmental Genetics | 24 | 2.1K | 152 | 179 |
| 437 | collagen | 30 | 2.0K | 17 | 23 |
| 438 | alcoholism | 87 | 2.0K | 156 | 225 |
| 439 | Adolescent Medicine | 18 | 2.0K | 142 | 103 |
| 440 | Algae | 44 | 2.0K | 93 | 69 |
| 441 | Bioethics | 68 | 2.0K | 75 | 27 |
| 442 | Plant Taxonomy | 104 | 2.0K | 10 | 17 |
| 443 | biopolymers | 51 | 2.0K | 183 | 150 |
| 444 | Radiology | 56 | 2.0K | 184 | 88 |
| 445 | Extracellular matrix | 28 | 2.0K | 16 | 23 |
| 446 | Econometrics | 77 | 2.0K | 125 | 217 |
| 446 | nuclear astrophysics | 20 | 2.0K | 84 | 33 |
| 448 | molecular design | 29 | 2.0K | 16 | 13 |
| 449 | Medical innovations | 24 | 1.9K | 192 | 246 |
| 450 | Solar System | 40 | 1.9K | 178 | 145 |
| 451 | Systems Biology | 70 | 1.9K | 106 | 126 |
| 452 | global environmental change | 31 | 1.9K | 107 | 115 |
| 453 | Music | 23 | 1.9K | 175 | 24 |
| 454 | behavioral medicine | 57 | 1.9K | 145 | 235 |
| 455 | occupational diseases | 38 | 1.9K | 96 | 80 |
| 456 | probabilities | 145 | 1.9K | 39 | 66 |
| 457 | Autoimmune diseases | 56 | 1.9K | 26 | 42 |
| 458 | Nuclear Engineering | 176 | 1.9K | 111 | 152 |
| 458 | drug development | 31 | 1.9K | 140 | 223 |
| 460 | Cognitive Therapy | 42 | 1.9K | 53 | 34 |
| 460 | environmental exposure | 48 | 1.9K | 195 | 183 |
| 462 | Regional Economics | 32 | 1.9K | 26 | 12 |
| 463 | Nanoparticles | 55 | 1.9K | 229 | 280 |
| 464 | nuclear magnetic resonance spectroscopy | 24 | 1.9K | 161 | 41 |
| 465 | warfare | 36 | 1.9K | 25 | 30 |
| 466 | Numerical Analysis | 102 | 1.9K | 176 | 221 |
| 467 | Neurotoxicology | 40 | 1.9K | 23 | 17 |
| 468 | Immunochemistry | 44 | 1.8K | 73 | 46 |
| 468 | cell interaction | 51 | 1.8K | 79 | 102 |
| 470 | Physical organic chemistry | 75 | 1.8K | 70 | 93 |
| 471 | Information Theory | 36 | 1.8K | 306 | 212 |
| 472 | Molecular Spectroscopy | 45 | 1.8K | 241 | 109 |
| 473 | Signal Transduction | 55 | 1.8K | 130 | 279 |
| 474 | Autoantibodies | 53 | 1.8K | 25 | 38 |
| 475 | internet | 42 | 1.8K | 212 | 185 |
| 476 | cryosphere | 36 | 1.8K | 62 | 69 |
| 477 | Wildlife conservation | 40 | 1.8K | 193 | 221 |
| 478 | Emergency Medicine | 54 | 1.8K | 195 | 129 |
| 479 | War and Society | 31 | 1.8K | 21 | 29 |
| 480 | Bioenergetics | 44 | 1.8K | 86 | 106 |
| 480 | atmospheric models | 17 | 1.8K | 238 | 146 |
| 482 | Decision making | 51 | 1.8K | 156 | 175 |
| 483 | Paleogeography | 57 | 1.8K | 73 | 136 |
| 484 | Global Health | 83 | 1.8K | 41 | 45 |
| 485 | Protein engineering | 23 | 1.8K | 28 | 15 |
| 486 | Immunogenetics | 39 | 1.8K | 76 | 47 |
| 487 | Paleoecology | 65 | 1.8K | 83 | 158 |
| 488 | Biopharmaceutics | 50 | 1.8K | 90 | 119 |
| 489 | Chemotherapy | 32 | 1.7K | 291 | 165 |
| 490 | Information Technology | 63 | 1.7K | 228 | 329 |
| 491 | Inflammation | 34 | 1.7K | 184 | 160 |
| 492 | Ergonomics | 39 | 1.7K | 179 | 94 |
| 493 | Petroleum Geology | 31 | 1.7K | 89 | 60 |
| 494 | Industrial Microbiology | 23 | 1.7K | 531 | 355 |
| 495 | sexual behavior | 32 | 1.7K | 83 | 59 |
| 496 | Protozoa | 19 | 1.7K | 80 | 46 |
| 497 | Anthropology | 68 | 1.7K | 206 | 172 |
| 498 | Clinical Biochemistry | 44 | 1.7K | 126 | 127 |
| 499 | Musicology | 11 | 1.7K | 65 | 1 |
| 500 | Occupational Health | 64 | 1.7K | 72 | 77 |
| 501 | Antioxidants | 33 | 1.7K | 63 | 128 |
| 502 | Entrepreneurship | 19 | 1.6K | 231 | 216 |
| 503 | ecosystem | 36 | 1.6K | 245 | 295 |
| 504 | disabilities | 77 | 1.6K | 30 | 49 |
| 505 | Computer Science | 43 | 1.6K | 292 | 115 |
| 505 | Schizophrenia | 33 | 1.6K | 245 | 217 |
| 507 | Biomass Energy | 20 | 1.6K | 917 | 618 |
| 508 | Cognitive neuroscience | 19 | 1.6K | 345 | 289 |
| 509 | Seaweed | 28 | 1.6K | 96 | 63 |
| 510 | Photobiology | 29 | 1.6K | 213 | 94 |
| 511 | Soft Condensed Matter | 40 | 1.6K | 217 | 172 |
| 512 | medical education | 73 | 1.6K | 220 | 243 |
| 513 | Communication | 53 | 1.6K | 350 | 358 |
| 514 | micromechanics | 54 | 1.6K | 24 | 37 |
| 515 | Liver diseases | 35 | 1.6K | 341 | 491 |
| 516 | Energy metabolism | 39 | 1.6K | 85 | 114 |
| 516 | Cheminformatics | 36 | 1.6K | 9 | 48 |
| 518 | Composite Materials | 52 | 1.6K | 533 | 701 |
| 519 | Homeostasis | 11 | 1.6K | 163 | 278 |
| 519 | Cell metabolism | 11 | 1.6K | 240 | 285 |
| 519 | Chronic diseases | 31 | 1.6K | 126 | 160 |
| 522 | health planning | 87 | 1.6K | 118 | 179 |
| 523 | Fisheries | 53 | 1.5K | 250 | 265 |
| 524 | Environmental Management | 45 | 1.5K | 528 | 698 |
| 525 | Energy Harvesting | 20 | 1.5K | 114 | 133 |
| 526 | cell membrane | 37 | 1.5K | 82 | 106 |
| 527 | Labor Economics | 40 | 1.5K | 17 | 35 |
| 528 | Genes | 67 | 1.5K | 65 | 106 |
| 529 | Animal genetics | 37 | 1.5K | 115 | 80 |
| 530 | Dermatology | 20 | 1.5K | 641 | 318 |
| 531 | computer networks | 51 | 1.5K | 432 | 402 |
| 532 | Neuropharmacology | 24 | 1.5K | 87 | 38 |
| 533 | Europa | 37 | 1.5K | 43 | 28 |
| 534 | Linguistics | 63 | 1.5K | 203 | 173 |
| 535 | Neuropsychiatry | 37 | 1.5K | 121 | 112 |
| 535 | Respiratory system | 37 | 1.5K | 56 | 42 |
| 537 | Agriculture | 52 | 1.5K | 342 | 351 |
| 538 | Artificial Intelligence | 101 | 1.5K | 471 | 869 |
| 539 | Kidney diseases | 28 | 1.5K | 171 | 120 |
| 540 | Chromosomes | 59 | 1.5K | 72 | 154 |
| 541 | Economic Geography | 28 | 1.5K | 29 | 22 |
| 542 | Developmental Disabilities | 46 | 1.5K | 157 | 201 |
| 543 | Hemostasis | 53 | 1.4K | 40 | 45 |
| 544 | Ethics | 90 | 1.4K | 23 | 46 |
| 545 | Electromagnetic compatibility | 47 | 1.4K | 22 | 18 |
| 546 | Seismology | 34 | 1.4K | 91 | 68 |
| 547 | Information Science | 66 | 1.4K | 262 | 443 |
| 548 | Hemodynamics | 27 | 1.4K | 130 | 156 |
| 549 | Electrochemical Analysis | 49 | 1.4K | 191 | 201 |
| 550 | Pharmacogenomics | 20 | 1.4K | 21 | 6 |
| 550 | Human-Computer Interaction | 63 | 1.4K | 78 | 179 |
| 552 | Ecological Genetics | 51 | 1.4K | 17 | 15 |
| 553 | Ultrasonics | 42 | 1.4K | 151 | 170 |
| 553 | Ultrasound | 41 | 1.4K | 88 | 79 |
| 555 | Teratology | 34 | 1.4K | 30 | 34 |
| 555 | Chemical analysis | 45 | 1.4K | 76 | 91 |
| 557 | sustainability | 17 | 1.4K | 207 | 164 |
| 558 | Chemical Ecology | 40 | 1.3K | 62 | 83 |
| 559 | Insects | 30 | 1.3K | 328 | 205 |
| 560 | Bones | 26 | 1.3K | 158 | 178 |
| 561 | Oxidation-reduction | 22 | 1.3K | 153 | 205 |
| 562 | Sites | 18 | 1.3K | 148 | 105 |
| 563 | Autism | 29 | 1.3K | 135 | 149 |
| 564 | Substance Abuse | 47 | 1.3K | 248 | 240 |
| 565 | housing policy | 39 | 1.3K | 2 | 1 |
| 566 | Computer Graphics | 37 | 1.3K | 365 | 307 |
| 567 | Adolescent | 76 | 1.3K | 218 | 355 |
| 568 | Engineering Geology | 41 | 1.3K | 261 | 278 |
| 569 | Educational Psychology | 41 | 1.3K | 280 | 301 |
| 569 | China | 51 | 1.3K | 512 | 422 |
| 571 | Bioinorganic chemistry | 51 | 1.3K | 204 | 213 |
| 572 | Computer Vision | 18 | 1.3K | 355 | 283 |
| 573 | Semiconductors | 93 | 1.3K | 142 | 207 |
| 574 | Meteorites | 30 | 1.3K | 290 | 352 |
| 575 | Occupational Therapy | 100 | 1.3K | 61 | 62 |
| 575 | Radiopharmaceuticals | 103 | 1.3K | 3 | 2 |
| 577 | Nephrology | 15 | 1.3K | 195 | 115 |
| 578 | Emergency Medical Services | 43 | 1.3K | 55 | 30 |
| 578 | Community Psychiatry | 31 | 1.3K | 178 | 180 |
| 580 | Sarcopenia | 10 | 1.3K | 113 | 45 |
| 581 | Ferroelectricity | 50 | 1.3K | 144 | 89 |
| 582 | Public Administration | 50 | 1.3K | 205 | 191 |
| 583 | Sedimentary rocks | 33 | 1.3K | 36 | 56 |
| 584 | Forest Ecology | 22 | 1.3K | 287 | 222 |
| 585 | Mental Health | 56 | 1.2K | 215 | 230 |
| 586 | natural disasters | 34 | 1.2K | 150 | 166 |
| 587 | Spine | 23 | 1.2K | 178 | 156 |
| 588 | Psychosomatic Medicine | 29 | 1.2K | 144 | 159 |
| 588 | health services accessibility | 37 | 1.2K | 116 | 105 |
| 588 | Food additives | 36 | 1.2K | 158 | 219 |
| 591 | Bioelectronics | 30 | 1.2K | 191 | 302 |
| 592 | Ocean Engineering | 43 | 1.2K | 341 | 359 |
| 593 | Neuromuscular diseases | 49 | 1.2K | 59 | 106 |
| 593 | Tropical Medicine | 37 | 1.2K | 324 | 233 |
| 595 | Internet of Things | 17 | 1.2K | 379 | 214 |
| 596 | Ceramic materials | 36 | 1.2K | 196 | 173 |
| 597 | Forest Management | 21 | 1.2K | 285 | 212 |
| 598 | Carbon | 29 | 1.2K | 260 | 380 |
| 599 | Synchrotron Radiation | 46 | 1.2K | 38 | 32 |
| 600 | pheromones | 36 | 1.2K | 59 | 85 |
| 601 | Neurosurgery | 26 | 1.2K | 225 | 214 |
| 602 | Reproductive toxicology | 35 | 1.2K | 21 | 52 |
| 603 | Industry | 4 | 1.2K | 114 | 16 |
| 604 | Electrical Engineering | 170 | 1.1K | 305 | 590 |
| 605 | Human Rights | 32 | 1.1K | 58 | 21 |
| 606 | Soil biology | 15 | 1.1K | 357 | 303 |
| 607 | Physical Therapy | 59 | 1.1K | 148 | 291 |
| 608 | drug addiction | 37 | 1.1K | 245 | 292 |
| 609 | Sports Medicine | 41 | 1.1K | 590 | 575 |
| 610 | Neural circuitry | 8 | 1.1K | 1205 | 418 |
| 610 | amino acids | 33 | 1.1K | 26 | 39 |
| 612 | Demography | 26 | 1.1K | 128 | 108 |
| 613 | economic policy | 67 | 1.1K | 275 | 329 |
| 614 | Magnetic Materials | 46 | 1.1K | 257 | 315 |
| 615 | calcification | 23 | 1.1K | 83 | 88 |
| 616 | Minerals | 43 | 1.1K | 36 | 50 |
| 617 | Economic Assistance | 32 | 1.1K | 85 | 149 |
| 618 | Neuroendocrinology | 9 | 1.1K | 28 | 31 |
| 619 | Radio frequency | 33 | 1.1K | 77 | 67 |
| 620 | Robotics | 36 | 1.1K | 369 | 348 |
| 621 | Multimedia Systems | 25 | 1.1K | 467 | 233 |
| 622 | polar regions | 47 | 1.1K | 63 | 84 |
| 623 | Australia | 30 | 1.1K | 387 | 234 |
| 624 | Organometallic chemistry | 37 | 1.1K | 349 | 227 |
| 624 | Adolescent Psychology | 35 | 1.1K | 136 | 174 |
| 626 | epilepsy | 25 | 1.1K | 188 | 147 |
| 627 | Development | 27 | 1.0K | 138 | 172 |
| 628 | Cybernetics | 29 | 1.0K | 381 | 423 |
| 629 | Carbohydrates | 26 | 1.0K | 49 | 65 |
| 630 | Research Design | 38 | 1.0K | 188 | 266 |
| 631 | Africa | 77 | 1.0K | 105 | 126 |
| 632 | Asia | 40 | 1.0K | 454 | 307 |
| 633 | Petroleum Engineering | 21 | 1.0K | 217 | 132 |
| 634 | Cellulose | 14 | 1.0K | 155 | 98 |
| 635 | Bacterial infections | 20 | 1.0K | 177 | 297 |
| 636 | Natural resources | 25 | 1.0K | 147 | 157 |
| 637 | heredity | 16 | 1.0K | 188 | 71 |
| 638 | mutation | 39 | 998 | 50 | 122 |
| 639 | Hydraulic Engineering | 29 | 990 | 282 | 233 |
| 640 | Functional Analysis | 40 | 983 | 205 | 172 |
| 641 | gene transfer | 3 | 977 | 250 | 12 |
| 641 | genetic transformation | 3 | 977 | 250 | 12 |
| 643 | glycoproteins | 35 | 965 | 38 | 74 |
| 643 | Glycoconjugates | 35 | 965 | 38 | 74 |
| 643 | glycolipids | 35 | 965 | 38 | 74 |
| 646 | drug evaluation | 41 | 958 | 128 | 166 |
| 647 | Geomorphology | 33 | 956 | 295 | 404 |
| 648 | Agricultural Chemistry | 21 | 940 | 794 | 635 |
| 649 | Child welfare | 38 | 936 | 180 | 161 |
| 650 | Organizational Behavior | 21 | 925 | 146 | 176 |
| 650 | animals | 35 | 925 | 200 | 159 |
| 652 | violence | 31 | 924 | 193 | 218 |
| 653 | world | 19 | 918 | 171 | 212 |
| 654 | viral genetics | 7 | 917 | 186 | 221 |
| 655 | Structural optimization | 2 | 916 | 445 | 60 |
| 655 | RNA | 30 | 916 | 65 | 136 |
| 657 | Carcinogenesis | 27 | 915 | 194 | 256 |
| 658 | Socioeconomic Factors | 29 | 913 | 91 | 98 |
| 659 | Cell communication | 18 | 912 | 171 | 125 |
| 660 | Contraception | 36 | 909 | 76 | 93 |
| 660 | Anxiety Disorders | 19 | 909 | 137 | 194 |
| 662 | Waste management | 35 | 905 | 210 | 189 |
| 662 | Water Purification | 35 | 905 | 155 | 151 |
| 664 | Post-traumatic stress disorder | 38 | 904 | 114 | 195 |
| 665 | Psychiatric Epidemiology | 23 | 903 | 79 | 101 |
| 666 | Social problems | 14 | 900 | 182 | 120 |
| 667 | Urban Policy | 17 | 899 | 166 | 110 |
| 668 | Multivariate Analysis | 17 | 897 | 115 | 70 |
| 668 | cloning | 9 | 897 | 331 | 250 |
| 670 | Hemophilia | 18 | 892 | 132 | 80 |
| 671 | prostaglandins | 27 | 888 | 56 | 52 |
| 671 | venom | 20 | 888 | 141 | 107 |
| 671 | Toxins | 21 | 888 | 149 | 118 |
| 674 | Molecular recognition | 20 | 884 | 7 | 10 |
| 675 | Ore deposits | 21 | 880 | 136 | 111 |
| 676 | Metastasis | 8 | 878 | 45 | 48 |
| 677 | mutagens | 25 | 876 | 164 | 264 |
| 678 | Social work | 51 | 875 | 211 | 219 |
| 679 | Invertebrates | 29 | 871 | 79 | 75 |
| 680 | Anxiety | 18 | 867 | 145 | 203 |
| 681 | Food preferences | 21 | 863 | 54 | 59 |
| 682 | Computer-Aided Design | 21 | 862 | 305 | 209 |
| 682 | Hydrodynamics | 19 | 862 | 167 | 132 |
| 684 | Sports | 30 | 859 | 580 | 530 |
| 685 | Teaching | 34 | 854 | 344 | 332 |
| 686 | Detectors | 30 | 846 | 329 | 270 |
| 687 | Wind power | 42 | 845 | 10 | 27 |
| 688 | Breeding | 26 | 843 | 329 | 311 |
| 689 | Social policy | 50 | 842 | 81 | 130 |
| 690 | Lipid metabolism | 29 | 840 | 21 | 90 |
| 690 | Lipid | 29 | 840 | 21 | 90 |
| 692 | Marine Geology | 15 | 838 | 189 | 119 |
| 693 | drug toxicity | 13 | 837 | 72 | 23 |
| 694 | Hearing | 20 | 836 | 202 | 138 |
| 695 | Geriatric Psychiatry | 17 | 834 | 390 | 249 |
| 696 | Ethnology | 76 | 833 | 119 | 174 |
| 697 | labor | 10 | 832 | 91 | 36 |
| 698 | Comparative Physiology | 19 | 829 | 241 | 190 |
| 699 | Antibacterial agents | 30 | 828 | 62 | 111 |
| 700 | vitamin C | 19 | 827 | 36 | 50 |
| 700 | vitamin E | 19 | 827 | 36 | 50 |
| 702 | Parkinson's disease | 13 | 821 | 39 | 27 |
| 703 | Raman spectroscopy | 9 | 818 | 367 | 91 |
| 704 | Speech Disorders | 27 | 815 | 266 | 256 |
| 705 | System analysis | 46 | 814 | 442 | 598 |
| 706 | Nuclear Energy | 83 | 811 | 120 | 184 |
| 707 | working class | 5 | 810 | 99 | 37 |
| 708 | mycoses | 12 | 806 | 301 | 351 |
| 709 | energy development | 15 | 804 | 204 | 301 |
| 710 | Environmental Geology | 20 | 798 | 503 | 404 |
| 711 | peptides | 45 | 796 | 49 | 68 |
| 712 | Randomized Controlled Trials | 55 | 792 | 100 | 124 |
| 713 | Qualitative Research | 49 | 790 | 19 | 79 |
| 714 | Mental Health Services | 23 | 789 | 350 | 275 |
| 715 | Health promotion | 29 | 786 | 317 | 369 |
| 715 | ethanol | 27 | 786 | 61 | 74 |
| 717 | Malaria | 40 | 782 | 104 | 168 |
| 718 | Palliative Care | 36 | 781 | 126 | 140 |
| 719 | Nanochemistry | 28 | 778 | 182 | 119 |
| 720 | Geomagnetism | 24 | 776 | 192 | 165 |
| 721 | Brain damage | 13 | 773 | 122 | 64 |
| 722 | Organometallic compounds | 21 | 772 | 408 | 326 |
| 723 | Rock Mechanics | 21 | 766 | 295 | 277 |
| 723 | Neonatology | 35 | 766 | 41 | 90 |
| 725 | Ethnic relations | 43 | 764 | 22 | 36 |
| 726 | ethnobiology | 29 | 762 | 12 | 28 |
| 727 | Physical Geography | 11 | 761 | 206 | 64 |
| 728 | industrial hygiene | 51 | 760 | 76 | 94 |
| 729 | Photography | 103 | 756 | 306 | 136 |
| 730 | Steroids | 37 | 755 | 140 | 231 |
| 731 | Phytotherapy | 21 | 752 | 137 | 117 |
| 732 | Gene library | 10 | 736 | 22 | 9 |
| 733 | Industrial Safety | 48 | 727 | 95 | 213 |
| 733 | Nutrition physiology | 11 | 727 | 286 | 188 |
| 735 | Ethnobotany | 20 | 726 | 19 | 30 |
| 735 | Traditional medicine | 20 | 726 | 26 | 33 |
| 735 | Ethnomedicine | 20 | 726 | 13 | 29 |
| 738 | Cerebral cortex | 15 | 722 | 368 | 367 |
| 739 | Chemical structure | 5 | 721 | 339 | 19 |
| 740 | Cognitive Behavioral Therapy | 9 | 706 | 86 | 28 |
| 740 | Flow cytometry | 22 | 706 | 41 | 54 |
| 742 | Intellectual disability | 37 | 704 | 144 | 208 |
| 743 | Logic | 30 | 693 | 50 | 31 |
| 744 | Sexual health | 20 | 690 | 187 | 148 |
| 745 | Welfare Economics | 28 | 689 | 49 | 95 |
| 745 | terrorism | 19 | 689 | 29 | 14 |
| 745 | breastfeeding | 28 | 689 | 57 | 60 |
| 748 | Intelligent Transportation Systems | 19 | 681 | 323 | 347 |
| 749 | Sociolinguistics | 17 | 680 | 103 | 63 |
| 750 | Soil Mechanics | 17 | 676 | 452 | 411 |
| 750 | nursing ethics | 19 | 676 | 17 | 19 |
| 752 | Oligosaccharide | 22 | 675 | 39 | 85 |
| 753 | health behavior | 19 | 673 | 277 | 261 |
| 754 | Orthopedic Surgery | 18 | 669 | 235 | 196 |
| 755 | Greenhouse gases | 31 | 668 | 37 | 92 |
| 756 | bioclimatology | 19 | 667 | 170 | 162 |
| 757 | Dynamics | 44 | 665 | 238 | 286 |
| 757 | Small Business | 19 | 665 | 160 | 343 |
| 759 | Fluid Mechanics | 29 | 664 | 491 | 500 |
| 760 | DNA | 26 | 655 | 38 | 58 |
| 761 | Stochastic Processes | 28 | 653 | 139 | 97 |
| 762 | Structural dynamics | 33 | 652 | 205 | 376 |
| 762 | Heart Failure | 10 | 652 | 183 | 158 |
| 764 | Sedimentology | 15 | 651 | 165 | 157 |
| 765 | Asthma | 31 | 649 | 67 | 98 |
| 766 | fusion reactors | 53 | 647 | 77 | 77 |
| 767 | Quantum theory | 36 | 646 | 125 | 200 |
| 768 | carcinogens | 16 | 644 | 308 | 340 |
| 769 | Evolutionary Genetics | 12 | 643 | 173 | 93 |
| 769 | Molecular Epidemiology | 12 | 643 | 173 | 93 |
| 769 | Precision medicine | 17 | 643 | 35 | 17 |
| 772 | Jurisprudence | 39 | 640 | 146 | 190 |
| 773 | Population | 25 | 635 | 224 | 236 |
| 774 | Plant diseases | 27 | 632 | 611 | 635 |
| 775 | Group decision making | 14 | 631 | 114 | 81 |
| 776 | Mining Engineering | 32 | 627 | 74 | 144 |
| 776 | DNA methylation | 17 | 627 | 33 | 60 |
| 778 | Language Disorders | 24 | 626 | 230 | 207 |
| 779 | Neuroimmunology | 21 | 619 | 136 | 272 |
| 780 | Atmospheric Chemistry | 27 | 617 | 297 | 497 |
| 781 | Political Psychology | 24 | 614 | 55 | 110 |
| 782 | abnormalities | 12 | 612 | 43 | 28 |
| 783 | Surface properties | 28 | 608 | 153 | 354 |
| 784 | Political Geography | 20 | 604 | 42 | 52 |
| 785 | child abuse | 22 | 603 | 201 | 270 |
| 786 | Birth control | 24 | 596 | 73 | 104 |
| 787 | Nanoelectronics | 33 | 591 | 137 | 117 |
| 787 | Cosmochemistry | 20 | 591 | 256 | 325 |
| 789 | Rural Development | 18 | 590 | 105 | 105 |
| 790 | atmosphere | 23 | 588 | 151 | 196 |
| 791 | Biomechanics | 19 | 585 | 447 | 467 |
| 791 | International Finance | 26 | 585 | 390 | 484 |
| 793 | Culture | 58 | 584 | 106 | 170 |
| 794 | Feminism | 42 | 583 | 39 | 81 |
| 795 | Growth factors | 19 | 579 | 24 | 117 |
| 796 | Real-time Data Processing | 14 | 578 | 14 | 14 |
| 797 | Algebra | 48 | 577 | 290 | 208 |
| 797 | Erectile dysfunction | 4 | 577 | 197 | 33 |
| 799 | Acarology | 13 | 576 | 68 | 42 |
| 799 | Mites | 13 | 576 | 136 | 52 |
| 799 | Ticks | 13 | 576 | 83 | 42 |
| 799 | Acari | 13 | 576 | 64 | 42 |
| 803 | older people | 46 | 575 | 284 | 333 |
| 803 | industrial relations | 49 | 575 | 94 | 161 |
| 805 | Tourism | 22 | 573 | 430 | 631 |
| 806 | Psychoneuroimmunology | 20 | 568 | 118 | 271 |
| 807 | Public Choice | 11 | 567 | 120 | 73 |
| 808 | Control Theory | 47 | 566 | 330 | 519 |
| 809 | Electrophysiology | 20 | 565 | 311 | 246 |
| 810 | race relations | 20 | 563 | 137 | 115 |
| 811 | Nonverbal Communication | 18 | 562 | 22 | 45 |
| 812 | Smoking | 17 | 558 | 253 | 282 |
| 813 | Agricultural Ecology | 16 | 556 | 373 | 519 |
| 813 | visualization | 52 | 556 | 223 | 266 |
| 813 | Methodology | 12 | 556 | 91 | 29 |
| 816 | Humanities | 31 | 553 | 271 | 166 |
| 816 | Information Systems | 35 | 553 | 175 | 376 |
| 818 | Psycholinguistics | 20 | 550 | 302 | 381 |
| 819 | Food Microbiology | 19 | 544 | 370 | 581 |
| 820 | Social Change | 16 | 542 | 253 | 421 |
| 821 | Behavioral Genetics | 11 | 541 | 91 | 81 |
| 821 | Functional Genomics | 20 | 541 | 39 | 84 |
| 823 | Radiation Oncology | 7 | 539 | 198 | 65 |
| 824 | Psychiatric Nursing | 18 | 538 | 158 | 78 |
| 824 | Pediatric Nursing | 13 | 538 | 123 | 62 |
| 826 | Technological Innovations | 21 | 537 | 183 | 240 |
| 827 | Structural Equation Modeling | 10 | 536 | 40 | 53 |
| 828 | Radiography | 14 | 535 | 311 | 423 |
| 829 | Surface-Active Agents | 25 | 534 | 157 | 368 |
| 830 | Organizational Sociology | 20 | 528 | 51 | 64 |
| 831 | Nuclear Chemistry | 48 | 527 | 142 | 228 |
| 832 | Systems Engineering | 15 | 523 | 946 | 698 |
| 832 | Health Services Administration | 28 | 523 | 170 | 280 |
| 832 | Morphology | 22 | 523 | 182 | 167 |
| 835 | Nonlinear functional analysis | 16 | 522 | 411 | 260 |
| 836 | Computational Fluid Dynamics | 18 | 520 | 155 | 141 |
| 837 | Oxidative stress | 10 | 519 | 562 | 556 |
| 838 | Otolaryngology | 19 | 517 | 145 | 148 |
| 838 | Marine Pollution | 12 | 517 | 511 | 510 |
| 840 | disarmament | 11 | 516 | 50 | 26 |
| 841 | Paleobiology | 20 | 514 | 55 | 17 |
| 842 | Manufacturing Processes | 26 | 508 | 716 | 868 |
| 843 | blood transfusion | 14 | 503 | 279 | 195 |
| 843 | population geography | 25 | 503 | 35 | 70 |
| 845 | Herbal medicine | 13 | 501 | 177 | 191 |
| 845 | psychopathology | 6 | 501 | 217 | 139 |
| 847 | Recycling | 10 | 497 | 213 | 318 |
| 848 | Mechanics | 22 | 496 | 339 | 314 |
| 849 | civil service | 20 | 494 | 62 | 97 |
| 850 | biochemical markers | 19 | 487 | 144 | 117 |
| 850 | Semiconductor industry | 25 | 487 | 131 | 112 |
| 852 | Cardiovascular Pharmacology | 24 | 486 | 23 | 35 |
| 853 | Online social networks | 26 | 482 | 9 | 31 |
| 854 | mental health promotion | 23 | 481 | 11 | 31 |
| 855 | Elections | 26 | 479 | 50 | 82 |
| 856 | Mobile genetic elements | 17 | 477 | 4 | 6 |
| 857 | Probability | 24 | 476 | 102 | 181 |
| 857 | food technology | 20 | 476 | 905 | 1123 |
| 859 | Business Ethics | 10 | 472 | 445 | 573 |
| 860 | Ecological Engineering | 6 | 468 | 384 | 222 |
| 861 | Engineering Mathematics | 33 | 467 | 617 | 619 |
| 861 | Apoptosis | 20 | 467 | 26 | 49 |
| 861 | neurotoxins | 20 | 467 | 26 | 49 |
| 861 | Neurotoxic agents | 20 | 467 | 26 | 49 |
| 861 | Nerve regeneration | 20 | 467 | 26 | 49 |
| 866 | pharmaceutical industry | 15 | 461 | 123 | 86 |
| 867 | finance | 25 | 460 | 710 | 828 |
| 868 | Systems Analysis | 13 | 459 | 404 | 257 |
| 868 | Primates | 14 | 459 | 271 | 231 |
| 870 | Chemical Oceanography | 3 | 458 | 289 | 144 |
| 870 | Hematopoietic stem cell transplantation | 14 | 458 | 87 | 157 |
| 870 | Consciousness | 8 | 458 | 228 | 129 |
| 873 | transport vesicles | 4 | 456 | 166 | 277 |
| 874 | Aquatic ecology | 28 | 455 | 147 | 284 |
| 875 | Social welfare | 14 | 452 | 195 | 129 |
| 876 | Ethnic Conflict | 15 | 451 | 52 | 55 |
| 876 | forced migration | 15 | 451 | 52 | 55 |
| 878 | Radiotherapy | 3 | 448 | 343 | 53 |
| 879 | Soviet Union | 27 | 447 | 84 | 42 |
| 880 | Industrial Engineering | 12 | 445 | 946 | 722 |
| 880 | children | 29 | 445 | 73 | 184 |
| 882 | mammals | 19 | 443 | 299 | 326 |
| 883 | Freshwater invertebrates | 7 | 441 | 98 | 72 |
| 883 | Metallic Glasses | 5 | 441 | 324 | 147 |
| 885 | Biomolecules | 14 | 439 | 110 | 195 |
| 886 | Acoustics | 7 | 438 | 221 | 92 |
| 887 | Speech acoustics | 5 | 437 | 138 | 83 |
| 888 | optical instruments | 8 | 435 | 226 | 142 |
| 889 | Ceramics | 30 | 434 | 352 | 531 |
| 890 | isomerism | 19 | 431 | 36 | 42 |
| 890 | Personality Assessment | 10 | 431 | 256 | 272 |
| 890 | Chirality | 19 | 431 | 36 | 42 |
| 893 | Phonetics | 14 | 430 | 97 | 97 |
| 894 | Religion | 38 | 429 | 126 | 69 |
| 894 | preventive medicine | 22 | 429 | 346 | 563 |
| 896 | Microeconomics | 17 | 428 | 71 | 106 |
| 896 | Periglacial processes | 10 | 428 | 37 | 46 |
| 896 | Permafrost | 10 | 428 | 37 | 46 |
| 896 | Frozen ground | 10 | 428 | 39 | 47 |
| 896 | Vision | 17 | 428 | 226 | 314 |
| 901 | Chronobiology | 9 | 425 | 166 | 96 |
| 901 | biological clocks | 9 | 425 | 166 | 96 |
| 901 | circadian rhythm | 9 | 425 | 166 | 96 |
| 901 | biological rhythms | 9 | 425 | 152 | 95 |
| 905 | Marine Meteorology | 7 | 423 | 212 | 178 |
| 905 | Circadian rhythms | 8 | 423 | 128 | 88 |
| 907 | Climate | 17 | 422 | 105 | 217 |
| 908 | Microwaves | 33 | 418 | 408 | 491 |
| 909 | Cerebrospinal fluid | 21 | 415 | 9 | 32 |
| 910 | Land Use Planning | 11 | 414 | 117 | 144 |
| 911 | Eastern Europe | 28 | 413 | 115 | 87 |
| 912 | Development Economics | 14 | 411 | 85 | 132 |
| 912 | income | 9 | 411 | 41 | 34 |
| 912 | Input-output analysis | 9 | 411 | 68 | 67 |
| 912 | Wealth | 9 | 411 | 41 | 34 |
| 912 | cytokines | 20 | 411 | 370 | 627 |
| 917 | Algorithms | 18 | 409 | 141 | 134 |
| 917 | Glass | 22 | 409 | 339 | 493 |
| 917 | pottery | 22 | 409 | 329 | 482 |
| 920 | Environmentalism | 9 | 408 | 38 | 45 |
| 921 | Gender Studies | 17 | 407 | 77 | 109 |
| 921 | Operations Research | 22 | 407 | 775 | 938 |
| 923 | Landscape Ecology | 8 | 405 | 218 | 204 |
| 924 | Genetic Toxicology | 14 | 404 | 101 | 201 |
| 924 | Developmental Neurobiology | 21 | 404 | 75 | 141 |
| 924 | educational planning | 8 | 404 | 159 | 116 |
| 927 | Liposomes | 11 | 401 | 191 | 207 |
| 928 | Transportation | 17 | 400 | 623 | 700 |
| 928 | radar | 14 | 400 | 50 | 49 |
| 930 | complementary therapies | 29 | 398 | 395 | 679 |
| 930 | hydrocolloids | 7 | 398 | 355 | 385 |
| 930 | disaster relief | 7 | 398 | 80 | 47 |
| 933 | Quality Control | 17 | 397 | 567 | 650 |
| 934 | child behavior | 14 | 393 | 115 | 186 |
| 935 | nuclear power | 40 | 392 | 77 | 93 |
| 935 | Fish | 4 | 392 | 296 | 49 |
| 937 | Clinical Trials | 15 | 391 | 162 | 153 |
| 938 | health services | 15 | 390 | 369 | 342 |
| 938 | Insect biochemistry | 11 | 390 | 181 | 197 |
| 940 | Histocompatibility Testing | 7 | 388 | 252 | 126 |
| 941 | Genetic translocation | 12 | 386 | 27 | 48 |
| 941 | plasmids | 12 | 386 | 27 | 48 |
| 943 | Body language | 8 | 385 | 27 | 43 |
| 943 | Metallography | 11 | 385 | 344 | 284 |
| 945 | Happiness | 4 | 382 | 313 | 122 |
| 945 | monitoring | 25 | 382 | 16 | 22 |
| 947 | Production Engineering | 13 | 379 | 898 | 678 |
| 948 | Magnetic Resonance Imaging | 13 | 378 | 169 | 172 |
| 948 | Fluorescence spectroscopy | 9 | 378 | 95 | 59 |
| 950 | biomedicine | 12 | 377 | 273 | 264 |
| 951 | Applied Linguistics | 15 | 376 | 168 | 138 |
| 952 | Melanoma | 9 | 374 | 64 | 79 |
| 953 | emergency management | 11 | 373 | 289 | 240 |
| 954 | Coastal zone management | 17 | 372 | 128 | 211 |
| 955 | Forensic Genetics | 14 | 368 | 62 | 92 |
| 956 | Fish diseases | 1 | 367 | 217 | 33 |
| 957 | Dietetics | 32 | 365 | 116 | 218 |
| 957 | Plant tissue culture | 14 | 365 | 221 | 267 |
| 957 | Ultrasonic Imaging | 15 | 365 | 130 | 144 |
| 960 | Nutritional support | 7 | 363 | 72 | 78 |
| 960 | Plant cell culture | 11 | 363 | 235 | 265 |
| 960 | Zoonoses | 14 | 363 | 51 | 88 |
| 963 | War | 26 | 361 | 15 | 25 |
| 964 | Knowledge | 26 | 360 | 83 | 118 |
| 964 | air | 12 | 360 | 48 | 93 |
| 966 | Discourse Analysis | 21 | 359 | 44 | 111 |
| 966 | motivation | 4 | 359 | 257 | 143 |
| 968 | Software Engineering | 11 | 358 | 569 | 452 |
| 969 | Electromagnetism | 20 | 356 | 312 | 369 |
| 969 | Synthetic biology | 7 | 356 | 180 | 117 |
| 971 | Bone diseases | 9 | 355 | 163 | 287 |
| 972 | Emotion | 3 | 354 | 191 | 104 |
| 972 | Drug discovery | 10 | 354 | 57 | 71 |
| 974 | Urban Economics | 10 | 351 | 132 | 172 |
| 974 | Animal welfare | 4 | 351 | 211 | 70 |
| 974 | Combinatorial analysis | 46 | 351 | 149 | 224 |
| 977 | Marine Ecology | 17 | 350 | 232 | 261 |
| 978 | Gastrointestinal diseases | 14 | 349 | 177 | 175 |
| 979 | hazard mitigation | 17 | 348 | 202 | 349 |
| 979 | urban population | 9 | 348 | 76 | 136 |
| 981 | Geometry | 35 | 347 | 245 | 248 |
| 981 | Travel | 16 | 347 | 235 | 216 |
| 981 | Carbohydrate | 1 | 347 | 74 | 27 |
| 984 | adolescence | 27 | 346 | 212 | 439 |
| 985 | Project Management | 10 | 345 | 91 | 201 |
| 985 | Pediatric Rheumatology | 20 | 345 | 23 | 39 |
| 987 | Political Participation | 21 | 344 | 50 | 109 |
| 988 | innovation | 9 | 343 | 274 | 417 |
| 989 | Disability Studies | 26 | 342 | 15 | 33 |
| 989 | women | 13 | 342 | 266 | 138 |
| 991 | Pituitary gland | 12 | 341 | 55 | 78 |
| 992 | Sonar | 11 | 340 | 62 | 50 |
| 992 | Navigation | 13 | 340 | 123 | 91 |
| 994 | Crystallization | 23 | 339 | 87 | 130 |
| 994 | Astrocytes | 9 | 339 | 229 | 348 |
| 996 | Performance | 8 | 337 | 138 | 134 |
| 997 | Land use | 11 | 336 | 477 | 520 |
| 997 | catalytic activity | 13 | 336 | 217 | 310 |
| 999 | magnetic resonance | 19 | 335 | 82 | 99 |
| 999 | vitamins | 8 | 335 | 30 | 45 |