10.5K(top 0.1%)
papers
507.0K(top 0.1%)
citations
298(top 0.1%)
h-index
563(top 0.1%)
g-index
15.8K
all documents
693.1K
doc citations
13.3K
citing journals
Top Disciplines (by citations)
| # | Discipline | Articles | Citations | R ARank | R CRank |
|---|---|---|---|---|---|
| 1 | Science | 717 | 95,447 | 508 | 310 |
| 2 | Geophysics | 1,094 | 54,180 | 69 | 54 |
| 3 | Biology | 390 | 51,660 | 875 | 543 |
| 4 | Physics | 247 | 42,356 | 1.3K | 694 |
| 5 | Natural history | 154 | 37,776 | 432 | 386 |
| 6 | Pollution | 511 | 28,662 | 141 | 138 |
| 7 | Atmospheric Physics | 533 | 27,610 | 37 | 42 |
| 8 | Meteorology | 362 | 26,722 | 89 | 54 |
| 9 | Ecology | 436 | 21,832 | 325 | 364 |
| 10 | Environmental Health | 273 | 21,312 | 285 | 166 |
| 11 | Atmospheric Chemistry | 341 | 21,213 | 34 | 37 |
| 12 | Planets | 372 | 19,911 | 95 | 78 |
| 13 | Medicine | 320 | 16,519 | 1.1K | 988 |
| 14 | Environment | 185 | 15,998 | 381 | 315 |
| 15 | Climatology | 202 | 15,798 | 103 | 64 |
| 16 | Research | 284 | 15,336 | 917 | 570 |
| 17 | environmental pollution | 291 | 13,560 | 132 | 104 |
| 18 | Biotechnology | 2 | 12,957 | 8.6K | 437 |
| 18 | Bioengineering | 2 | 12,957 | 6.1K | 285 |
| 20 | Biochemical Engineering | 1 | 12,956 | 4.5K | 163 |
| 21 | Marine Biology | 250 | 12,191 | 95 | 50 |
| 22 | Oceanography | 286 | 10,840 | 50 | 57 |
| 23 | Environmental Engineering | 151 | 10,172 | 269 | 210 |
| 24 | Toxicology | 171 | 9,755 | 409 | 215 |
| 25 | sanitation | 132 | 9,268 | 134 | 147 |
| 26 | Fisheries | 254 | 7,373 | 21 | 14 |
| 27 | Environmental pollutants | 149 | 7,194 | 53 | 33 |
| 28 | Environmental Chemistry | 148 | 7,034 | 78 | 141 |
| 29 | pollutants | 145 | 7,026 | 40 | 29 |
| 30 | environmental protection | 82 | 6,717 | 321 | 145 |
| 31 | Biodiversity conservation | 96 | 6,262 | 170 | 230 |
| 32 | Earth Sciences | 110 | 5,719 | 280 | 176 |
| 33 | Microbiology | 67 | 5,601 | 1.9K | 1.3K |
| 34 | Biodiversity | 101 | 5,220 | 208 | 150 |
| 35 | atmospheric models | 122 | 5,032 | 37 | 60 |
| 36 | Climate change | 59 | 4,661 | 148 | 226 |
| 36 | Eutrophication | 59 | 4,661 | 140 | 226 |
| 38 | Estuaries | 74 | 4,622 | 2 | 5 |
| 39 | Algal blooms | 50 | 4,351 | 5 | 3 |
| 39 | Cyanobacteria | 50 | 4,351 | 5 | 3 |
| 39 | microalgae | 50 | 4,351 | 5 | 3 |
| 42 | Data Mining | 24 | 4,024 | 322 | 72 |
| 42 | data collection | 24 | 4,024 | 164 | 50 |
| 44 | Biogeochemical cycles | 58 | 3,985 | 38 | 53 |
| 45 | Water pollution | 80 | 3,548 | 256 | 249 |
| 46 | Chemistry | 63 | 3,516 | 3.3K | 2.5K |
| 47 | Aquatic ecology | 134 | 3,514 | 11 | 11 |
| 48 | Environmental Toxicology | 68 | 3,427 | 241 | 210 |
| 49 | Geology | 84 | 3,225 | 548 | 377 |
| 50 | Environmental Policy | 28 | 3,189 | 820 | 350 |
| 51 | Genetics | 46 | 3,056 | 1.2K | 1.1K |
| 52 | Microbial Ecology | 55 | 2,974 | 489 | 519 |
| 53 | Hydrology | 102 | 2,861 | 252 | 283 |
| 54 | Zoology | 68 | 2,658 | 436 | 235 |
| 55 | Marine Pollution | 60 | 2,634 | 41 | 50 |
| 56 | Biogeochemistry | 51 | 2,583 | 158 | 177 |
| 57 | ecosystem | 37 | 2,416 | 247 | 202 |
| 58 | Astrophysics | 85 | 2,304 | 803 | 942 |
| 59 | Aerosols | 29 | 2,218 | 62 | 25 |
| 60 | Conservation Biology | 49 | 2,207 | 124 | 155 |
| 61 | Evolution | 35 | 2,201 | 543 | 491 |
| 62 | Environmental monitoring | 69 | 2,166 | 485 | 605 |
| 63 | Optics | 92 | 2,134 | 884 | 704 |
| 64 | biological evolution | 35 | 2,093 | 592 | 572 |
| 65 | Molecular Biology | 56 | 1,929 | 2.8K | 3.0K |
| 66 | Marine mammals | 71 | 1,897 | 12 | 18 |
| 67 | Energy Policy | 7 | 1,872 | 1.1K | 164 |
| 68 | Water | 42 | 1,584 | 412 | 528 |
| 69 | Fluid Mechanics | 49 | 1,521 | 447 | 377 |
| 70 | Mass Spectrometry | 10 | 1,452 | 833 | 242 |
| 71 | Solar System | 49 | 1,382 | 125 | 130 |
| 72 | Systems Biology | 11 | 1,348 | 942 | 171 |
| 73 | space environment | 39 | 1,311 | 33 | 20 |
| 74 | Sun | 48 | 1,305 | 101 | 117 |
| 75 | Molecular ecology | 41 | 1,281 | 239 | 440 |
| 76 | optical instruments | 15 | 1,263 | 167 | 68 |
| 77 | Marine Meteorology | 26 | 1,207 | 75 | 63 |
| 78 | Coral reef biology | 9 | 1,195 | 56 | 19 |
| 79 | polar regions | 35 | 1,176 | 105 | 75 |
| 80 | Population Genetics | 48 | 1,169 | 216 | 427 |
| 81 | Environmental Management | 32 | 1,100 | 572 | 692 |
| 82 | Astronomy | 22 | 1,013 | 1.4K | 1.1K |
| 83 | Natural resources | 9 | 1,000 | 337 | 82 |
| 84 | Radio | 34 | 999 | 415 | 434 |
| 85 | Nuclear Energy | 6 | 974 | 753 | 108 |
| 86 | weather forecasting | 29 | 961 | 23 | 22 |
| 87 | Public Policy | 1 | 958 | 3.2K | 325 |
| 87 | power plants | 1 | 958 | 29 | 7 |
| 89 | Algae | 21 | 938 | 273 | 194 |
| 90 | Pharmacology | 5 | 924 | 5.3K | 2.2K |
| 91 | energy resources | 6 | 914 | 415 | 190 |
| 92 | Spectrum analysis | 12 | 889 | 2.5K | 1.4K |
| 93 | Technology | 28 | 886 | 1.4K | 1.1K |
| 94 | Mathematics | 11 | 874 | 4.1K | 1.2K |
| 95 | Marine Ecology | 58 | 871 | 29 | 68 |
| 96 | Molecular Genetics | 32 | 865 | 557 | 794 |
| 96 | water supply | 26 | 865 | 298 | 347 |
| 98 | Agriculture | 25 | 848 | 678 | 548 |
| 99 | Coastal zone management | 52 | 838 | 5 | 11 |
| 100 | Engineering | 9 | 815 | 3.0K | 869 |
| 101 | Risk assessment | 6 | 788 | 385 | 24 |
| 101 | Health Risk Assessment | 6 | 788 | 267 | 15 |
| 103 | United States | 70 | 783 | 1.1K | 1.8K |
| 104 | ecological risk assessment | 5 | 779 | 165 | 10 |
| 105 | natural disasters | 29 | 778 | 198 | 256 |
| 106 | mammals | 9 | 775 | 654 | 219 |
| 107 | Transport | 23 | 774 | 30 | 46 |
| 107 | Sea | 23 | 774 | 19 | 18 |
| 107 | Fishery resources | 23 | 774 | 25 | 22 |
| 110 | Seaweed | 18 | 759 | 211 | 184 |
| 111 | Remote Sensing | 16 | 742 | 269 | 111 |
| 112 | Botany | 34 | 736 | 1.4K | 1.8K |
| 113 | hazard mitigation | 23 | 733 | 130 | 141 |
| 114 | Statistics | 11 | 692 | 1.7K | 819 |
| 115 | Climate | 12 | 626 | 145 | 97 |
| 116 | Physical Chemistry | 24 | 621 | 1.0K | 1.1K |
| 116 | atmosphere | 12 | 621 | 159 | 63 |
| 118 | Analytical Chemistry | 26 | 620 | 2.0K | 2.1K |
| 118 | China | 19 | 620 | 1.1K | 620 |
| 120 | Hydraulic Engineering | 24 | 601 | 188 | 135 |
| 121 | freshwater biology | 20 | 595 | 254 | 287 |
| 122 | Geochemistry | 20 | 592 | 601 | 517 |
| 123 | Great Lakes | 20 | 589 | 24 | 22 |
| 124 | Kinetics | 22 | 587 | 84 | 68 |
| 124 | Chemical kinetics | 22 | 587 | 148 | 67 |
| 126 | Geodesy | 16 | 579 | 151 | 90 |
| 127 | Plant breeding | 8 | 578 | 602 | 266 |
| 127 | eugenics | 8 | 578 | 422 | 154 |
| 127 | Breeding | 8 | 578 | 874 | 491 |
| 130 | Geochemical Modeling | 30 | 575 | 62 | 136 |
| 130 | geological modeling | 30 | 575 | 69 | 143 |
| 132 | Endocrinology | 16 | 568 | 1.9K | 2.0K |
| 133 | Physiology | 19 | 549 | 2.2K | 2.4K |
| 134 | Radio waves | 22 | 544 | 308 | 343 |
| 135 | air | 8 | 543 | 5 | 11 |
| 136 | Agricultural Ecology | 11 | 516 | 631 | 629 |
| 137 | Computational Biology | 14 | 510 | 1.7K | 1.5K |
| 138 | Electronics | 20 | 505 | 1.7K | 1.4K |
| 139 | Birds | 11 | 503 | 769 | 392 |
| 140 | Ichthyology | 17 | 491 | 112 | 46 |
| 141 | Environmental risk assessment | 18 | 474 | 67 | 67 |
| 141 | environmental control | 18 | 474 | 37 | 54 |
| 143 | Sustainable Development | 5 | 471 | 1.6K | 714 |
| 144 | Agricultural Chemistry | 16 | 469 | 1.3K | 1.3K |
| 145 | Photochemistry | 10 | 463 | 836 | 519 |
| 146 | Biogeography | 9 | 454 | 658 | 716 |
| 146 | Genomics | 20 | 454 | 1.5K | 1.9K |
| 148 | Medical Laboratory Science | 11 | 442 | 1.3K | 1.2K |
| 149 | Light | 11 | 434 | 576 | 855 |
| 150 | Mineralogy | 5 | 432 | 1.3K | 642 |
| 151 | Animal ecology | 18 | 421 | 510 | 600 |
| 152 | Epidemiology | 9 | 420 | 3.1K | 2.3K |
| 153 | Surveying | 25 | 414 | 17 | 5 |
| 153 | Human genetics | 2 | 414 | 3.4K | 3.1K |
| 155 | food contamination | 6 | 413 | 759 | 209 |
| 156 | Restoration Ecology | 9 | 403 | 210 | 155 |
| 157 | Ocean Engineering | 20 | 398 | 245 | 286 |
| 158 | Radiation | 7 | 397 | 1.4K | 634 |
| 159 | Fish | 6 | 396 | 263 | 45 |
| 160 | Ecological Genetics | 20 | 392 | 131 | 138 |
| 160 | biological invasions | 10 | 392 | 290 | 252 |
| 162 | biological monitoring | 11 | 386 | 169 | 163 |
| 163 | Radio wave propagation | 16 | 379 | 334 | 211 |
| 164 | Water chemistry | 5 | 365 | 196 | 49 |
| 165 | Virulence | 2 | 359 | 1.9K | 1.2K |
| 166 | Marine Biotechnology | 3 | 343 | 270 | 85 |
| 167 | Pesticide residues | 2 | 334 | 103 | 30 |
| 167 | Food additives | 2 | 334 | 1.4K | 410 |
| 167 | Reproduction | 4 | 334 | 2.6K | 1.4K |
| 170 | Geomorphology | 11 | 318 | 428 | 477 |
| 171 | Statistical Mechanics | 22 | 317 | 244 | 226 |
| 171 | Magnetohydrodynamics | 22 | 317 | 89 | 125 |
| 173 | environmental exposure | 10 | 315 | 1.1K | 1.0K |
| 174 | Landslides | 3 | 310 | 263 | 126 |
| 175 | weather | 8 | 309 | 253 | 195 |
| 176 | Infections | 1 | 303 | 2.5K | 1.0K |
| 176 | infection | 1 | 303 | 3.3K | 1.2K |
| 178 | Animal Behavior | 9 | 302 | 1.1K | 1.3K |
| 179 | Land use | 4 | 298 | 882 | 390 |
| 180 | Environmental Law | 3 | 294 | 1.1K | 904 |
| 180 | soil conservation | 2 | 294 | 1.2K | 360 |
| 180 | land degradation | 2 | 294 | 776 | 186 |
| 180 | degradation | 2 | 294 | 776 | 186 |
| 184 | Protozoa | 2 | 293 | 608 | 213 |
| 185 | Biochemistry | 11 | 286 | 6.4K | 6.3K |
| 186 | Comparative Physiology | 10 | 283 | 393 | 438 |
| 186 | Ecosystem management | 17 | 283 | 178 | 381 |
| 186 | Toxins | 7 | 283 | 360 | 253 |
| 189 | Parasitology | 10 | 281 | 1.6K | 1.4K |
| 190 | Water quality management | 16 | 272 | 809 | 900 |
| 191 | California | 6 | 267 | 351 | 218 |
| 192 | environmental indicators | 5 | 264 | 308 | 256 |
| 193 | Genes | 10 | 263 | 682 | 665 |
| 194 | Anatomy | 8 | 261 | 1.6K | 1.5K |
| 195 | radiative transfer | 1 | 260 | 492 | 70 |
| 195 | Scandinavia | 6 | 260 | 493 | 314 |
| 197 | Signal Processing | 7 | 254 | 1.9K | 1.6K |
| 198 | Hydrometeorology | 2 | 249 | 293 | 188 |
| 199 | Geography | 10 | 243 | 1.4K | 1.3K |
| 200 | Aquaculture | 27 | 237 | 261 | 519 |
| 201 | Seismology | 14 | 235 | 258 | 303 |
| 202 | Ore deposits | 1 | 233 | 679 | 194 |
| 203 | Economics | 8 | 232 | 3.1K | 2.1K |
| 204 | Fishery management | 21 | 225 | 162 | 287 |
| 204 | cryosphere | 9 | 225 | 230 | 286 |
| 206 | Climate Change Mitigation | 4 | 221 | 22 | 70 |
| 206 | Global warming | 4 | 221 | 22 | 70 |
| 206 | sea level | 4 | 221 | 22 | 70 |
| 209 | Image Processing | 4 | 215 | 2.0K | 1.3K |
| 210 | Morphology | 5 | 214 | 752 | 448 |
| 211 | primary prevention | 1 | 209 | 1.0K | 222 |
| 212 | Cytology | 6 | 204 | 4.1K | 4.3K |
| 212 | Geomagnetism | 11 | 204 | 409 | 434 |
| 214 | Immunology | 3 | 203 | 4.8K | 3.7K |
| 215 | Ornithology | 6 | 197 | 870 | 574 |
| 216 | Neuropsychology | 3 | 196 | 2.7K | 1.8K |
| 216 | Neurophysiology | 3 | 196 | 3.2K | 2.6K |
| 216 | Psychophysiology | 3 | 196 | 3.2K | 2.5K |
| 219 | Environmental Microbiology | 5 | 192 | 1.3K | 1.5K |
| 220 | Wildlife conservation | 16 | 191 | 259 | 593 |
| 221 | Atmospheric Science | 3 | 187 | 125 | 28 |
| 222 | Immunotoxicology | 3 | 186 | 342 | 90 |
| 222 | Diagnostic microbiology | 2 | 186 | 2.1K | 1.8K |
| 224 | sustainability | 3 | 183 | 904 | 716 |
| 225 | Economic Development | 3 | 182 | 1.7K | 1.1K |
| 226 | Public Health | 11 | 181 | 4.2K | 5.1K |
| 227 | Marine Geophysics | 8 | 175 | 116 | 110 |
| 228 | Medical genetics | 1 | 174 | 5.2K | 3.4K |
| 228 | Bioacoustics | 2 | 174 | 139 | 27 |
| 230 | global environmental change | 4 | 172 | 744 | 726 |
| 231 | Korea | 2 | 168 | 501 | 85 |
| 231 | Wind power | 6 | 168 | 159 | 136 |
| 231 | Asia | 2 | 168 | 3.9K | 1.2K |
| 231 | toxicity testing | 4 | 168 | 684 | 478 |
| 235 | Australia | 2 | 165 | 3.0K | 1.2K |
| 236 | Business | 5 | 159 | 1.7K | 1.4K |
| 237 | Groundwater | 1 | 158 | 1.5K | 480 |
| 238 | bioclimatology | 8 | 153 | 505 | 651 |
| 239 | Wetland ecology | 7 | 150 | 243 | 323 |
| 240 | calcification | 1 | 149 | 1.2K | 631 |
| 241 | gene mapping | 5 | 147 | 2.0K | 2.4K |
| 242 | Wetland conservation | 5 | 145 | 227 | 227 |
| 242 | rivers | 9 | 145 | 124 | 227 |
| 242 | Wetlands | 5 | 145 | 232 | 227 |
| 245 | Japan | 15 | 144 | 970 | 1.2K |
| 246 | Virology | 3 | 143 | 4.0K | 4.0K |
| 246 | economic policy | 4 | 143 | 2.4K | 1.3K |
| 248 | Embryology | 2 | 137 | 2.4K | 2.0K |
| 249 | Quality Control | 6 | 135 | 1.2K | 1.1K |
| 250 | Dermatology | 2 | 133 | 2.7K | 1.7K |
| 251 | Photography | 55 | 131 | 268 | 365 |
| 252 | Geographic information systems | 12 | 127 | 429 | 637 |
| 253 | Pacific Islands | 5 | 122 | 235 | 121 |
| 254 | Environmental Geology | 8 | 121 | 814 | 1.2K |
| 254 | Plant Ecology | 6 | 121 | 1.3K | 1.8K |
| 256 | Cell Biology | 3 | 120 | 5.2K | 5.2K |
| 256 | Renewable Energy Sources | 2 | 120 | 2.6K | 2.4K |
| 256 | Energy Consumption | 2 | 120 | 524 | 400 |
| 256 | energy conservation | 2 | 120 | 2.3K | 1.7K |
| 256 | Waterways | 7 | 120 | 29 | 43 |
| 256 | Harbors | 7 | 120 | 39 | 45 |
| 262 | Chromosome mapping | 4 | 115 | 2.0K | 2.3K |
| 263 | Water Microbiology | 4 | 114 | 415 | 458 |
| 264 | Paleoceanography | 3 | 112 | 238 | 337 |
| 265 | Cartography | 3 | 110 | 519 | 202 |
| 266 | Electrical Engineering | 9 | 109 | 2.7K | 2.2K |
| 266 | venom | 4 | 109 | 464 | 516 |
| 268 | Paleontology | 4 | 108 | 1.4K | 1.2K |
| 269 | Electromagnetic waves | 4 | 106 | 255 | 118 |
| 270 | Marine invertebrates | 4 | 105 | 211 | 115 |
| 270 | Aquatic ecosystems | 9 | 105 | 64 | 75 |
| 272 | Surgery | 1 | 104 | 4.2K | 3.5K |
| 272 | Immunopharmacology | 1 | 104 | 1.9K | 993 |
| 274 | Nuclear Physics | 5 | 103 | 3.8K | 3.5K |
| 275 | Petrology | 1 | 101 | 1.3K | 830 |
| 275 | Sedimentology | 3 | 101 | 802 | 742 |
| 277 | Geobiology | 8 | 97 | 299 | 521 |
| 277 | carcinogens | 2 | 97 | 1.7K | 1.5K |
| 279 | Statistical physics | 3 | 94 | 3.9K | 3.2K |
| 280 | Medical Microbiology | 1 | 93 | 4.5K | 3.4K |
| 281 | Molecular evolution | 5 | 92 | 1.4K | 2.0K |
| 281 | Marine resources | 5 | 92 | 234 | 311 |
| 281 | Phylogeny | 4 | 92 | 843 | 990 |
| 284 | ports | 5 | 88 | 123 | 176 |
| 285 | Pharmacognosy | 3 | 86 | 2.0K | 2.2K |
| 285 | Ethology | 5 | 86 | 1.1K | 1.8K |
| 285 | natural products | 3 | 86 | 2.3K | 1.9K |
| 288 | Cancer | 1 | 81 | 6.7K | 4.9K |
| 289 | Medical Oncology | 1 | 80 | 3.8K | 2.6K |
| 289 | Carcinogenesis | 1 | 80 | 2.1K | 1.6K |
| 289 | mutagens | 1 | 80 | 1.8K | 1.5K |
| 292 | Pesticides | 4 | 79 | 510 | 496 |
| 292 | Invertebrates | 5 | 79 | 340 | 473 |
| 294 | Neurology | 2 | 78 | 7.5K | 6.8K |
| 295 | Neural circuitry | 4 | 77 | 1.5K | 1.8K |
| 295 | Hormones | 2 | 77 | 1.8K | 1.7K |
| 297 | Maritime Law | 8 | 76 | 26 | 30 |
| 297 | Marine Conservation | 8 | 76 | 20 | 24 |
| 297 | Analytical Biochemistry | 2 | 76 | 2.4K | 1.8K |
| 297 | Law of the Sea | 8 | 76 | 20 | 24 |
| 297 | DNA | 7 | 76 | 353 | 698 |
| 302 | Physical Geography | 5 | 75 | 454 | 528 |
| 303 | Origin of life | 1 | 71 | 363 | 186 |
| 303 | Bacteriology | 2 | 71 | 2.5K | 2.6K |
| 303 | plankton | 9 | 71 | 77 | 297 |
| 303 | Organelle biogenesis | 1 | 71 | 522 | 302 |
| 307 | Ecohydrology | 3 | 70 | 361 | 390 |
| 308 | proteins | 3 | 69 | 2.8K | 2.9K |
| 309 | Biotelemetry | 7 | 68 | 24 | 78 |
| 310 | Radiology | 2 | 67 | 2.2K | 1.5K |
| 310 | Chemical Engineering | 1 | 67 | 6.2K | 4.5K |
| 310 | Energy Conversion | 1 | 67 | 2.1K | 1.8K |
| 310 | cosmic rays | 2 | 67 | 170 | 91 |
| 310 | Entomology | 4 | 67 | 2.6K | 2.3K |
| 315 | Biological Systems | 1 | 66 | 1.7K | 955 |
| 315 | Cosmochemistry | 7 | 66 | 242 | 478 |
| 317 | Parasitic Diseases | 5 | 59 | 2.1K | 3.0K |
| 318 | Transportation | 2 | 57 | 1.9K | 1.6K |
| 318 | Roads | 2 | 57 | 992 | 682 |
| 320 | Malaria | 1 | 56 | 1.5K | 1.1K |
| 320 | Host-parasite interactions | 1 | 56 | 2.4K | 2.5K |
| 320 | Immunity | 1 | 56 | 3.7K | 3.7K |
| 323 | Landscape Ecology | 4 | 54 | 468 | 852 |
| 324 | Nervous system | 2 | 52 | 3.6K | 4.0K |
| 325 | Proteome | 2 | 51 | 1.9K | 2.4K |
| 326 | Navigation | 5 | 50 | 417 | 477 |
| 327 | Herpetology | 3 | 48 | 353 | 279 |
| 328 | Reptiles | 2 | 47 | 462 | 250 |
| 329 | Emerging infectious diseases | 1 | 46 | 826 | 708 |
| 330 | Systems Engineering | 5 | 44 | 2.0K | 2.6K |
| 331 | animals | 2 | 43 | 2.2K | 1.8K |
| 332 | clay | 2 | 41 | 691 | 1.0K |
| 332 | clay minerals | 2 | 41 | 427 | 564 |
| 332 | Microwaves | 3 | 41 | 1.7K | 1.7K |
| 335 | Biophysics | 3 | 40 | 7.0K | 7.8K |
| 335 | Agronomy | 4 | 40 | 573 | 1.1K |
| 337 | Civil Engineering | 3 | 39 | 2.0K | 1.6K |
| 337 | preventive medicine | 1 | 39 | 2.7K | 2.2K |
| 337 | Travel | 1 | 39 | 1.9K | 1.2K |
| 337 | Detectors | 1 | 39 | 2.9K | 2.0K |
| 341 | Histology | 1 | 38 | 3.7K | 3.4K |
| 341 | Diabetes mellitus | 1 | 38 | 4.1K | 4.0K |
| 341 | Photobiology | 2 | 38 | 1.5K | 1.7K |
| 341 | Continental shelf | 3 | 38 | 122 | 237 |
| 341 | heredity | 2 | 38 | 1.1K | 1.2K |
| 341 | arthritis | 2 | 38 | 2.0K | 2.7K |
| 341 | Diabetes | 1 | 38 | 4.2K | 4.1K |
| 348 | Animal Biotechnology | 1 | 36 | 453 | 300 |
| 348 | Glaciology | 11 | 36 | 165 | 517 |
| 348 | Regional Planning | 4 | 36 | 1.5K | 2.0K |
| 348 | Animal breeding | 1 | 36 | 1.3K | 991 |
| 348 | Bioavailability | 2 | 36 | 115 | 133 |
| 348 | water resources | 5 | 36 | 164 | 265 |
| 348 | animal diseases | 1 | 36 | 1.1K | 855 |
| 348 | glaciers | 11 | 36 | 160 | 505 |
| 348 | city planning | 4 | 36 | 1.4K | 1.9K |
| 357 | Artificial Intelligence | 4 | 35 | 3.8K | 4.9K |
| 357 | Risk Management | 5 | 35 | 599 | 1.3K |
| 359 | Ocean-atmosphere interaction | 4 | 34 | 95 | 82 |
| 360 | Electromagnetism | 1 | 33 | 1.9K | 1.4K |
| 360 | Boundary Value Problems | 1 | 33 | 1.4K | 958 |
| 360 | Antenna Arrays | 1 | 33 | 969 | 846 |
| 360 | Wireless Communication Systems | 1 | 33 | 3.7K | 2.9K |
| 364 | Photonics | 4 | 32 | 2.0K | 3.0K |
| 364 | Greenhouse gases | 2 | 32 | 284 | 495 |
| 364 | DNA polymerases | 1 | 32 | 1.0K | 1.5K |
| 364 | Mollusks | 5 | 32 | 142 | 268 |
| 368 | Acoustics | 5 | 31 | 302 | 368 |
| 368 | Communication in politics | 1 | 31 | 361 | 236 |
| 368 | shellfish | 7 | 31 | 60 | 232 |
| 368 | aerosol | 1 | 31 | 237 | 225 |
| 372 | Plant Taxonomy | 1 | 30 | 870 | 747 |
| 372 | Engineering Geology | 3 | 30 | 1.4K | 2.0K |
| 374 | Archaeology | 5 | 29 | 1.1K | 1.6K |
| 374 | Wildlife management | 3 | 29 | 603 | 830 |
| 374 | Telecommunication | 3 | 29 | 2.9K | 3.2K |
| 374 | international cooperation | 2 | 29 | 922 | 1.2K |
| 378 | body temperature | 1 | 28 | 732 | 665 |
| 379 | Engineering Mathematics | 2 | 27 | 3.7K | 3.2K |
| 379 | Probability | 4 | 27 | 792 | 1.4K |
| 379 | radiocarbon dating | 2 | 27 | 526 | 635 |
| 379 | Financial management | 4 | 27 | 515 | 1.3K |
| 379 | Risk | 4 | 27 | 572 | 1.3K |
| 379 | Celestial Mechanics | 2 | 27 | 297 | 328 |
| 379 | Sound | 6 | 27 | 819 | 1.6K |
| 379 | Library Science | 2 | 27 | 1.9K | 1.3K |
| 379 | Population | 3 | 27 | 1.1K | 1.6K |
| 388 | Structural Engineering | 4 | 26 | 1.2K | 1.8K |
| 389 | Proteomics | 3 | 25 | 1.4K | 2.6K |
| 389 | Europe | 1 | 25 | 6.5K | 5.0K |
| 391 | occupational diseases | 1 | 24 | 2.3K | 2.2K |
| 391 | Marine biodiversity | 4 | 24 | 291 | 437 |
| 393 | Functional Genomics | 1 | 23 | 724 | 1.0K |
| 393 | genome | 1 | 23 | 3.5K | 3.8K |
| 393 | lasers | 1 | 23 | 3.6K | 2.9K |
| 396 | Ecological Engineering | 1 | 22 | 664 | 912 |
| 396 | Economic History | 4 | 22 | 3.6K | 4.1K |
| 396 | Veterinary Immunology | 1 | 22 | 538 | 593 |
| 396 | Speech acoustics | 2 | 22 | 196 | 281 |
| 396 | Urban Areas | 2 | 22 | 334 | 481 |
| 401 | Environmental Sociology | 1 | 21 | 92 | 94 |
| 402 | Marine Engineering | 3 | 20 | 526 | 462 |
| 402 | Naval Architecture | 3 | 20 | 494 | 505 |
| 402 | Industrial Microbiology | 1 | 20 | 3.8K | 4.3K |
| 402 | System analysis | 3 | 20 | 2.8K | 4.0K |
| 406 | Genetic engineering | 2 | 19 | 3.2K | 4.5K |
| 406 | Electromagnetic compatibility | 2 | 19 | 550 | 716 |
| 406 | Molecular cloning | 2 | 19 | 1.9K | 2.8K |
| 406 | Genetic recombination | 2 | 19 | 1.9K | 2.7K |
| 406 | Recombinant DNA | 2 | 19 | 2.1K | 3.0K |
| 411 | Fluid Dynamics | 2 | 18 | 1.4K | 1.7K |
| 411 | peptides | 1 | 18 | 2.0K | 2.0K |
| 411 | Peptide | 1 | 18 | 482 | 499 |
| 414 | Paleoclimatology | 1 | 17 | 1.2K | 1.5K |
| 414 | Paleoecology | 1 | 17 | 1.2K | 1.3K |
| 414 | Soil Science | 5 | 17 | 1.4K | 2.9K |
| 414 | Ecophysiology | 1 | 17 | 549 | 651 |
| 414 | Paleogeography | 1 | 17 | 759 | 916 |
| 414 | Mutagenesis | 1 | 17 | 1.1K | 1.3K |
| 414 | teratogenic agents | 1 | 17 | 587 | 617 |
| 414 | disease vectors | 1 | 17 | 2.0K | 2.4K |
| 414 | disaster relief | 1 | 17 | 474 | 616 |
| 414 | Zoonoses | 1 | 17 | 759 | 995 |
| 424 | Underwater Archaeology | 5 | 16 | 75 | 178 |
| 424 | industrial hygiene | 2 | 16 | 1.9K | 2.2K |
| 424 | management | 1 | 16 | 5.3K | 4.9K |
| 427 | Health Services Administration | 1 | 15 | 2.6K | 2.9K |
| 427 | Health Policy | 1 | 15 | 5.0K | 5.3K |
| 427 | Stochastic Processes | 1 | 15 | 1.7K | 1.7K |
| 427 | emergency management | 3 | 15 | 1.0K | 2.0K |
| 427 | public works | 1 | 15 | 223 | 246 |
| 427 | Information Science | 3 | 15 | 2.1K | 3.6K |
| 433 | Helminthology | 1 | 14 | 360 | 264 |
| 433 | Turbulence | 1 | 14 | 509 | 561 |
| 433 | North America | 5 | 14 | 553 | 1.6K |
| 433 | Parasites | 1 | 14 | 2.9K | 3.2K |
| 433 | Helminths | 1 | 14 | 360 | 264 |
| 438 | Industrial Engineering | 1 | 13 | 3.6K | 3.9K |
| 438 | Nanotechnology | 1 | 13 | 7.9K | 8.6K |
| 438 | Applied Mathematics | 1 | 13 | 2.0K | 1.4K |
| 438 | Nanoelectronics | 1 | 13 | 1.1K | 1.1K |
| 438 | Microelectronics | 1 | 13 | 3.0K | 3.5K |
| 438 | Accreditation | 1 | 13 | 263 | 217 |
| 438 | Mycology | 1 | 13 | 2.9K | 3.2K |
| 438 | human behavior | 3 | 13 | 2.6K | 5.3K |
| 438 | drainage | 3 | 13 | 316 | 644 |
| 438 | investigative techniques | 1 | 13 | 322 | 511 |
| 448 | Sociology | 2 | 12 | 4.2K | 5.7K |
| 448 | Quantum Optics | 2 | 12 | 1.2K | 1.7K |
| 448 | Mitochondrial DNA | 3 | 12 | 284 | 442 |
| 448 | Societies | 2 | 12 | 395 | 459 |
| 448 | Atomic spectroscopy | 2 | 12 | 1.3K | 1.8K |
| 448 | Development | 1 | 12 | 1.4K | 1.7K |
| 448 | Laser Spectroscopy | 2 | 12 | 1.2K | 1.6K |
| 448 | Developing countries | 1 | 12 | 3.8K | 4.2K |
| 456 | Econometrics | 1 | 11 | 2.4K | 2.4K |
| 456 | Human Geography | 4 | 11 | 996 | 2.0K |
| 456 | fishing industry | 1 | 11 | 444 | 575 |
| 456 | Social behavior | 1 | 11 | 2.2K | 2.7K |
| 460 | Information Systems | 2 | 10 | 2.1K | 3.5K |
| 460 | Input-output analysis | 1 | 10 | 576 | 753 |
| 460 | Documentation | 2 | 10 | 503 | 823 |
| 463 | Anthropology | 4 | 9 | 1.7K | 3.1K |
| 463 | Occupational Health | 1 | 9 | 2.7K | 2.8K |
| 463 | Cosmology | 1 | 9 | 2.0K | 1.9K |
| 463 | Regional Economics | 1 | 9 | 892 | 1.1K |
| 463 | Particle Physics | 1 | 9 | 1.2K | 1.2K |
| 463 | Occupational exposure | 1 | 9 | 236 | 259 |
| 463 | marketing | 3 | 9 | 1.8K | 3.1K |
| 463 | medical education | 1 | 9 | 4.0K | 4.4K |
| 471 | Politics | 3 | 8 | 751 | 1.1K |
| 471 | Flood forecasting | 1 | 8 | 269 | 532 |
| 471 | Reservoirs | 2 | 8 | 315 | 651 |
| 471 | Flood control | 1 | 8 | 648 | 906 |
| 471 | Earthquakes | 8 | 8 | 237 | 985 |
| 476 | Neurobiology | 1 | 7 | 3.1K | 4.1K |
| 476 | Genetic epidemiology | 1 | 7 | 712 | 1.0K |
| 476 | Developmental Biology | 1 | 7 | 3.7K | 4.9K |
| 476 | behavioral medicine | 1 | 7 | 2.9K | 4.1K |
| 476 | Animal migration | 1 | 7 | 28 | 57 |
| 476 | Chemical analysis | 1 | 7 | 2.4K | 3.2K |
| 476 | Southern states | 2 | 7 | 442 | 739 |
| 476 | Behavior | 3 | 7 | 3.7K | 7.2K |
| 484 | Freshwater Ecology | 2 | 6 | 433 | 916 |
| 484 | Radiography | 1 | 6 | 1.7K | 2.3K |
| 484 | Diagnosis | 1 | 6 | 1.5K | 2.1K |
| 484 | Diagnostic Imaging | 1 | 6 | 4.2K | 4.9K |
| 484 | Biopolitics | 2 | 6 | 192 | 207 |
| 484 | X-ray spectroscopy | 1 | 6 | 543 | 780 |
| 484 | Environmentalism | 1 | 6 | 323 | 539 |
| 484 | Watershed management | 1 | 6 | 597 | 800 |
| 484 | Forest Management | 1 | 6 | 1.1K | 1.5K |
| 484 | forest policy | 1 | 6 | 553 | 851 |
| 484 | health services | 1 | 6 | 2.4K | 3.4K |
| 484 | Plants | 2 | 6 | 3.1K | 4.8K |
| 496 | Geriatrics | 1 | 5 | 6.0K | 6.8K |
| 496 | Nuclear Engineering | 2 | 5 | 2.0K | 2.9K |
| 496 | Emergency Medicine | 1 | 5 | 3.3K | 3.9K |
| 496 | Child psychology | 1 | 5 | 2.8K | 3.9K |
| 496 | visualization | 2 | 5 | 2.7K | 3.3K |
| 496 | plant communities | 1 | 5 | 2.0K | 2.9K |
| 496 | wetland management | 2 | 5 | 262 | 841 |
| 496 | India | 2 | 5 | 2.9K | 4.0K |
| 504 | Planetary Science | 1 | 4 | 948 | 1.3K |
| 504 | microwave antennas | 1 | 4 | 892 | 1.2K |
| 504 | Public opinion | 1 | 4 | 911 | 1.4K |
| 504 | histological techniques | 1 | 4 | 1.5K | 2.4K |
| 504 | Moon | 1 | 4 | 432 | 575 |
| 504 | Tropical Medicine | 1 | 4 | 3.6K | 5.0K |
| 504 | land | 2 | 4 | 74 | 209 |
| 504 | United Kingdom | 1 | 4 | 3.3K | 4.3K |
| 512 | Forensic Genetics | 1 | 3 | 537 | 918 |
| 512 | food technology | 1 | 3 | 3.9K | 5.4K |
| 512 | Parallel Processing | 1 | 3 | 768 | 1.2K |
| 512 | Happiness | 1 | 3 | 920 | 1.6K |
| 512 | Foodborne diseases | 1 | 3 | 646 | 1.1K |
| 512 | Quality of life | 1 | 3 | 3.2K | 4.9K |
| 518 | Coastal Engineering | 5 | 2 | 87 | 544 |
| 518 | Public Health Informatics | 1 | 2 | 254 | 294 |
| 518 | Educational Psychology | 1 | 2 | 2.3K | 3.4K |
| 518 | Control Theory | 1 | 2 | 2.8K | 3.8K |
| 518 | Acoustic holography | 1 | 2 | 205 | 192 |
| 518 | Nonlinear Dynamics | 1 | 2 | 3.5K | 4.7K |
| 518 | embryonic development | 1 | 2 | 1.0K | 1.6K |
| 518 | Ultrasonics | 1 | 2 | 2.0K | 3.1K |
| 518 | Holography | 1 | 2 | 205 | 192 |
| 518 | Acoustic imaging | 1 | 2 | 205 | 192 |
| 518 | Outdoor Education | 1 | 2 | 167 | 303 |
| 518 | Adventure education | 1 | 2 | 119 | 259 |
| 518 | Ultrasonic Imaging | 1 | 2 | 895 | 1.5K |
| 518 | nuclear power | 1 | 2 | 697 | 888 |
| 518 | Volcanoes | 1 | 2 | 577 | 891 |
| 518 | irrigation | 1 | 2 | 760 | 1.2K |
| 518 | government | 1 | 2 | 1.4K | 1.8K |
| 518 | immigration | 1 | 2 | 422 | 780 |
| 518 | Soviet Union | 1 | 2 | 1.7K | 2.1K |
| 518 | migration policy | 1 | 2 | 364 | 731 |
| 518 | Maps | 1 | 2 | 401 | 695 |
| 518 | Asylum seeker | 1 | 2 | 361 | 723 |
| 518 | Minerals | 1 | 2 | 1.6K | 2.5K |
| 541 | Anthropological Linguistics | 1 | 1 | 657 | 914 |
| 541 | Environmental Geography | 1 | 1 | 111 | 257 |
| 541 | environmental justice | 1 | 1 | 117 | 292 |
| 541 | technology transfer | 1 | 1 | 462 | 938 |
| 541 | Photogrammetry | 3 | 1 | 168 | 735 |
| 541 | Social Media | 1 | 1 | 445 | 713 |
| 541 | social justice | 1 | 1 | 746 | 1.2K |
| 541 | Molecules | 1 | 1 | 2.6K | 3.6K |
| 541 | Ethnology | 1 | 1 | 2.9K | 3.8K |
| 541 | Amphibians | 1 | 1 | 642 | 910 |
| 541 | social marketing | 1 | 1 | 76 | 240 |
| 552 | Education | 2 | 0 | 5.8K | 9.8K |
| 552 | History | 1 | 0 | 2.1K | 2.3K |
| 552 | Environmental Economics | 1 | 0 | 886 | 1.6K |
| 552 | Avionics | 1 | 0 | 351 | 700 |
| 552 | Mathematical Physics | 2 | 0 | 3.8K | 5.6K |
| 552 | Metallurgy | 1 | 0 | 3.9K | 5.4K |
| 552 | Indigenous Peoples | 1 | 0 | 254 | 526 |
| 552 | Electrochemistry | 1 | 0 | 5.1K | 6.5K |
| 552 | Entropy | 1 | 0 | 2.4K | 3.6K |
| 552 | Microscopy | 1 | 0 | 3.8K | 5.1K |
| 552 | Mountains | 1 | 0 | 934 | 1.5K |
| 552 | Marine sediments | 1 | 0 | 77 | 144 |
| 552 | Insects | 1 | 0 | 2.6K | 3.8K |
| 552 | deviant behavior | 1 | 0 | 545 | 949 |
| 552 | language | 1 | 0 | 1.6K | 2.5K |