| 最初の文字 | キーワード例 | 延べ件数 |
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| 0-9 | 25th anniversary (2 件), 1,3-PDO (1 件), 3D printing (1 件), 13C-Metabolic flux analysis (1 件), 3DIC (1 件), 5-(hydroxymethyl)furfural (1 件) 等 | 9 件 |  |
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| A | adsorption (14 件), Ammonia (4 件), absorption (4 件), Atomic Layer Deposition (4 件), antibody (4 件), ALD (4 件) 等 | 195 件 | |
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| B | Biomass (6 件), bubble dynamics (4 件), Biomanufacturing (3 件), Bubble rise motion (2 件), bioprocess (2 件), Biogas (2 件) 等 | 108 件 | |
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| C-CH | CFD (8 件), Carbon neutral (7 件), carbon nanotube (6 件), CCU (6 件), catalyst (6 件), carbon dioxide (5 件) 等 | 171 件 | |
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| CI-CZ | crystallization (10 件), CO2 (10 件), CO2 capture (5 件), CO2 separation (5 件), CO2 separation membrane (3 件), CO2 reduction (3 件) 等 | 181 件 | |
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| D | Deep eutectic solvent (9 件), Drying (4 件), Direct Air Capture (3 件), dewatering (3 件), Discrete Element Method (3 件), Degradation (3 件) 等 | 145 件 | |
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| E | electrocatalyst (9 件), Extraction (8 件), electrocatalysts (4 件), Emulsion (4 件), Enzyme (3 件), extrusion (2 件) 等 | 117 件 | |
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| F | Fuel cell (7 件), fluidized bed (7 件), Flame spray pyrolysis (4 件), Fouling (3 件), freeze drying (3 件), fluoride ion (2 件) 等 | 98 件 | |
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| G | gas separation (4 件), Gold (3 件), graft polymerization (3 件), gas diffusion layer (3 件), green ammonia (3 件), Green chemistry (2 件) 等 | 68 件 | |
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| H | Hydrogen (9 件), hydrogel (8 件), Hydrothermal (6 件), Hydrogen peroxide (5 件), Hydrothermal Treatment (4 件), hydrothermal synthesis (3 件) 等 | 138 件 | |
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| I | ionic liquid (7 件), Interfacial polymerization (5 件), Image analysis (3 件), Innovation (2 件), Induction Heating Mixing Impeller (2 件), inhibitor (2 件) 等 | 76 件 | |
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| J | Janus multifunctional nanofiber (1 件), Japanese Company (1 件), juvenile hormone (1 件), Jump test (1 件) | 4 件 | |
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| K | kinetic analysis (2 件), Kinetic TSA separation (1 件), kinetic model (1 件), Keratin (1 件), Kinetic Modeling (1 件), kinetic reaction model (1 件) 等 | 12 件 | |
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| L | Lithium-ion battery (5 件), Liposome (4 件), Life Cycle Assessment (3 件), LDES (3 件), Liquid-liquid equilibria (3 件), lignin (3 件) 等 | 93 件 | |
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| M-MH | Machine learning (26 件), membrane (15 件), Metal-organic frameworks (7 件), Methanation (6 件), Membrane separation (6 件), Materials informatics (4 件) 等 | 161 件 | |
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| MI-MZ | Mixing (10 件), molecular dynamics (9 件), microwave (5 件), microcapsule (3 件), monolith (3 件), Molecularly Imprinted Polymer (3 件) 等 | 127 件 | |
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| N | nanoparticles (7 件), Nucleation (5 件), numerical simulation (5 件), Nanoparticle (5 件), nanofiltration (3 件), Neural network potential (2 件) 等 | 80 件 | |
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| O | Organic solvent nanofiltration (4 件), Oxygen Reduction Reaction (3 件), Optimization (3 件), osmotic pressure (3 件), Oxygen-enriched air (2 件), Organic photocatalysts (1 件) 等 | 54 件 | |
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| P-PH | PEFC (6 件), PFAS (6 件), Peptide (5 件), Permeability (3 件), pervaporation (3 件), PET (2 件) 等 | 97 件 | |
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| PI-PZ | polymer electrolyte fuel cell (6 件), polymer (6 件), plasma (4 件), polyelectrolyte complex (4 件), porous material (3 件), Powder compaction (3 件) 等 | 173 件 | |
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| Q | quasi-solid (1 件), Quantitative Evaluation (1 件), quantum computer (1 件), questionnaire survey (1 件), quantum computing (1 件), Quartz Crystal Microbalance (1 件) 等 | 7 件 | |
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| R | Rheology (4 件), Risk assessment (3 件), Recycling (3 件), Redox (3 件), Reactive crystallization (3 件), Residence time distribution (3 件) 等 | 81 件 | |
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| S-SO | Separation (8 件), Solvent extraction (7 件), Solubility (5 件), silica (5 件), simulation (4 件), slurry (3 件) 等 | 144 件 | |
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| SP-SZ | Startup (7 件), supercritical carbon dioxide (7 件), Supercritical CO2 (5 件), surface modification (4 件), supercritical water (4 件), Surface treatment (3 件) 等 | 101 件 | |
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| T | transdermal delivery (4 件), Transdermal drug delivery (4 件), Thermal energy storage (4 件), temperature (2 件), Thermoresponsive polymer (2 件), Transdermal (2 件) 等 | 79 件 | |
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| U | Ultrasound (3 件), Upcycling (2 件), ULSI (1 件), ultrasonic irradiation (1 件), Urban mines (1 件), Urea (1 件) 等 | 22 件 | |
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| V | vaccine (5 件), viscosity (4 件), Viscoelastic fluid (1 件), vapor permeation (1 件), vesicles (1 件), viscous fingering (1 件) 等 | 30 件 | |
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| W | Women's Empowerment (2 件), Water electrolysis (2 件), wastewater treatment (2 件), water treatment (2 件), wettability (2 件), wound healing (2 件) 等 | 36 件 | |
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| X | xylose (2 件), XANES/ELNES (1 件), xylitol (1 件), X-ray CT imaging (1 件) | 5 件 | |
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| Y | Yoshino cypress (1 件), Yttrium doping (1 件) | 2 件 | |
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| Z | Zeolite (11 件), zeolite-templated carbon (1 件), zwitterionic polymer (1 件), Zeolites (1 件), Zero-Carbon steel (1 件), ZSM-5 zeolite membrane (1 件) 等 | 29 件 | |
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| 非英数字 | * (5 件), precision medicine (1 件) | 6 件 | |
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