| 最初の文字 | キーワード例 | 延べ件数 |
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| 0-9 | 3D printing (2 件), 3D bioprinting (2 件), 3D protein immobilization (1 件), 13C labeling (1 件), 3DIC (1 件), 3D Convolutional Neural Network (3D CNN) (1 件) 等 | 11 件 |  |
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| A | adsorption (10 件), active matter (4 件), ammonia cracking (3 件), AI (3 件), Amine (3 件), Absorption (3 件) 等 | 162 件 | |
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| B | Biomass (6 件), Bubble rise motion (2 件), Bioethanol (2 件), Biodegradable polymer (2 件), Biopharmaceuticals (2 件), Bamboo (1 件) 等 | 92 件 | |
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| C-CH | Catalyst (11 件), CFD (8 件), Carbon dioxide (8 件), carbon nanotube (4 件), CCU (3 件), Cellulose (3 件) 等 | 154 件 | |
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| CI-CZ | CO2 Capture (11 件), Crystallization (11 件), CO2 electrolysis (6 件), Coating (3 件), CO2 (3 件), CO2 Absorption (3 件) 等 | 185 件 | |
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| D | deep eutectic solvent (12 件), Direct air capture (8 件), drying (6 件), Drop-in fuel (5 件), Degradation (4 件), Drug delivery system (3 件) 等 | 153 件 | |
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| E | emulsion (8 件), Extraction (7 件), Electrodialysis (4 件), Electrocatalyst (4 件), Electrolysis (4 件), Enzyme (3 件) 等 | 134 件 | |
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| F | fuel cell (5 件), Fluidized bed (4 件), Fine Bubble (4 件), Flame spray pyrolysis (4 件), Fischer-Tropsch Synthesis (3 件), Freezing (3 件) 等 | 121 件 | |
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| G | Gasification (4 件), gold nanoparticles (4 件), Gold (4 件), Gel (3 件), Gas separation (3 件), gold nanoparticle (3 件) 等 | 84 件 | |
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| H | hydrogen production (16 件), Hydrogen (8 件), hydrogel (7 件), HSP (3 件), Hydrogenation (3 件), Hydrolysis (3 件) 等 | 143 件 | |
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| I | Interfacial polymerization (10 件), Ionic Liquid (6 件), Interface (4 件), In-situ observation (2 件), Independent Protection Layer (2 件), Iron (2 件) 等 | 95 件 | |
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| J | Janus particle (2 件), Japanese Traditional Company (1 件), jam (1 件) | 4 件 | |
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| K | Kinetics (2 件), Kinetic analysis of hydrodefluorination (1 件), K promotion (1 件), Kinetic Analysis (1 件), Komagataella phaffii (1 件), kinetic model (1 件) 等 | 7 件 | |
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| L | lithium-ion battery (4 件), Liposome (4 件), liquid crystal (3 件), Liquid-Liquid Phase Separation (3 件), lipid assembly (3 件), LLM (3 件) 等 | 98 件 | |
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| M-MH | Machine learning (31 件), Metal-organic frameworks (15 件), methanation (8 件), Membrane (7 件), metal-organic framework (6 件), Membrane Separation (4 件) 等 | 165 件 | |
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| MI-MZ | mixing (9 件), MOF (5 件), molecular dynamics (4 件), Microwave (4 件), Microcapsule (3 件), Microwave heating (3 件) 等 | 114 件 | |
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| N | numerical simulation (5 件), Nanoparticles (4 件), nanofiber (3 件), Nickel (3 件), nanoparticle (3 件), Ni catalyst (3 件) 等 | 83 件 | |
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| O | Organic solvent nanofiltration (5 件), Organic solvent reverse osmosis (5 件), Oxygen Reduction Reaction (2 件), Optimization (2 件), Oxygen evolution reaction (2 件), Organosilica membrane (2 件) 等 | 64 件 | |
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| P-PH | Peptide (8 件), PFAS (7 件), Photocatalyst (7 件), pervaporation (4 件), Phase Change Material (3 件), PEM water electrolysis (3 件) 等 | 118 件 | |
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| PI-PZ | process simulation (6 件), Polyamide membrane (5 件), Plant oil deoxygenation (5 件), Process Design (4 件), Protein (4 件), Pyrolysis (4 件) 等 | 183 件 | |
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| Q | QCM (2 件), quartz crystal microbalance (2 件), Quantitative Evaluation (1 件), Quality management (1 件), quality (1 件), Quantum Sieving (1 件) 等 | 9 件 | |
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| R | Recycling (4 件), Rheology (3 件), Redox (2 件), Reverse Osmosis (2 件), Renewable energy (2 件), Rare earth (2 件) 等 | 72 件 | |
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| S-SO | Simulation (7 件), Self-assembly (6 件), Silica (4 件), Separation (4 件), solid oxide fuel cell (3 件), Solvent extraction (3 件) 等 | 135 件 | |
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| SP-SZ | surfactant (7 件), Startup (6 件), Surface modification (4 件), supercritical water (4 件), Supercritical carbon dioxide (4 件), Structured catalyst (4 件) 等 | 132 件 | |
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| T | Thermal conductivity (3 件), Transfer learning (3 件), Taylor-Couette flow (3 件), transdermal delivery (3 件), Tar (2 件), Thermodynamic Properties (2 件) 等 | 76 件 | |
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| U | Upcycling (5 件), Ultrafine Bubble (4 件), UiO-66 (2 件), Ultrasound (2 件), UV Irradiation (1 件), Ultimate oxygen demand (1 件) 等 | 29 件 | |
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| V | Viscosity (6 件), Viscoelastic fluid (4 件), Value Chain (2 件), Viscoelasticity (2 件), Vapor-liquid equilibria (2 件), vapor liquid equilibria (1 件) 等 | 36 件 | |
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| W | Woody biomass (8 件), Water electrolysis (4 件), Waste Plastics (3 件), Water electrolyzer (2 件), Water Treatment (2 件), Wafer drying (1 件) 等 | 43 件 | |
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| X | X-type zeolite membrane (1 件), X-ray CT (1 件), XPS analysis (1 件) | 3 件 | |
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| Y | Yeast promoter engineering (1 件), YSZ (1 件) | 2 件 | |
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| Z | Zeolite (10 件), Zwitterionic Polymer (2 件), Zinc-Air Battery (1 件), zero-emission model (1 件), Zeta potential (1 件), Zeolitic adsorbent (1 件) 等 | 31 件 | |
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