| Index | Example of keywords | Number |
|---|
| 0-9 | 1,4-Dioxane (1), 3D co-culture (1), 5G (1), 3D Printing (1), 3Dbioprinting (1), 3-Aminopropyltriethoxysilane (1) , etc | 6 |  |
|---|
| A | adsorption (9), Ammonia (4), Automation (4), agriculture (2), artificial intelligence (2), alginate hydrogel (2) , etc | 114 | |
|---|
| B | Biomass (7), Biochar (2), Biomaterial (2), bio-oil (2), bioinformatics (2), Bimetallic Nanoparticles (1) , etc | 59 | |
|---|
| C-CH | Carbon dioxide (7), Carbon nanotube (6), chromatography (6), Carbon Neutral (5), CCUS (4), catalysis (4) , etc | 133 | |
|---|
| CI-CZ | Crystallization (10), Combustion (5), CO2 (4), CVD (4), CO2 separation (4), CO2 methanation (4) , etc | 154 | |
|---|
| D | Drying (7), diffusion coefficient (5), drug delivery (3), Deep eutectic solvent (3), DNA (3), Drug Delivery System (3) , etc | 111 | |
|---|
| E | extraction (6), Escherichia coli (3), Erythritol Microcapsules (2), Electrophoresis (2), extraction equilibrium (2), Environmental Degradation (2) , etc | 78 | |
|---|
| F | Fouling (3), Fine bubbles (3), Filler (2), Filtration (2), Fluidized bed (2), Frozen material (2) , etc | 81 | |
|---|
| G | Gate adsorption (3), Graphene oxide (2), Green Innovation (2), graphene (2), Gas permeation (1), Gas separation (1) , etc | 41 | |
|---|
| H | Hydrogen (4), hydrothermal (4), hydrogen production (4), Hydrogel (4), Hydrogen storage (3), hydrogen sulfide (3) , etc | 94 | |
|---|
| I | ionic liquid (6), Image analysis (3), Inducible transgene expression system (1), Intermediate Water (1), Infectious diseases (1), Ice Templating (1) , etc | 51 | |
|---|
| J | Just suspended speed (1), Joback method (1), Junction Tree Variational Autoencoder (1) | 3 | |
|---|
| K | kinetic analysis (2), keep 1.5 alive (1), Korea (1), K-alum (1), kneading state (1), KPI (1) , etc | 7 | |
|---|
| L | liposome (3), Laboratory automation (3), Life Cycle Assessment (3), lactic acid (2), Low-fouling (2), Latent Heat Storage (2) , etc | 81 | |
|---|
| M-MH | machine learning (11), membrane (7), Membrane reactor (6), Methanation (5), Metal-organic framework (5), membrane separation (4) , etc | 126 | |
|---|
| MI-MZ | Mixing (9), Molecular Dynamics (7), Modeling (6), Microfluidics (4), Molecular dynamics simulation (3), molecular simulation (3) , etc | 103 | |
|---|
| N | Numerical Simulation (8), Nanoparticles (7), Nanofiltration (5), Nucleation (3), nanoparticle (3), Nitrous oxide (2) , etc | 86 | |
|---|
| O | Optimization (3), Oxygen evolution reaction (2), organoclay (2), organosilica membrane (2), oxygen reduction reaction (2), Organic hydride (1) , etc | 47 | |
|---|
| P-PH | Photocatalyst (5), particle method (3), Peptide (3), particle (3), PET (3), peptides (2) , etc | 82 | |
|---|
| PI-PZ | Platinum Group Metals (3), Power consumption (3), pulverization (3), porous carbon (3), Process Control (3), polymer electrolyte fuel cell (3) , etc | 139 | |
|---|
| Q | Quality by Design (2), Quenchbody (Q-body) (1), Quality (1), QCD (quality, cost and development) (1), Quantitative analysis (1), Quenchbody (1) , etc | 12 | |
|---|
| R | recycle (3), rheology (3), recycling (3), Reverse osmosis (2), rhodopsin (2), reaction mechanism (2) , etc | 67 | |
|---|
| S-SO | Simulation (11), Separation (7), self-assembly (5), solubility (4), SDGs (4), Silica membrane (4) , etc | 146 | |
|---|
| SP-SZ | supercritical fluid (8), supercritical carbon dioxide (6), Structured catalyst (5), Surfactant (4), surface modification (4), Supercritical CO2 (3) , etc | 103 | |
|---|
| T | The SCEJ Award for Outstanding Young Researcher (4), Thermal energy storage (2), The SCEJ Award for Outstanding Women's Activity (2), Technology choice (2), Transport phenomena (2), Taylor vortex (2) , etc | 79 | |
|---|
| U | Ultra-fine Bubble (1), UV absorption (1), Ultrasonic test (1), ultrasonic atomization (1), Upcycling (1), Ultrafine Bubble (1) , etc | 17 | |
|---|
| V | Vision symposium (8), Vaccine (2), VHH (2), virus (1), Virtual impactor (1), Vapor-Aeration (1) , etc | 38 | |
|---|
| W | Wastewater treatment (3), Water pollution (2), Water splitting (2), waste concrete (2), Washing (1), woman in management (1) , etc | 34 | |
|---|
| X | xEV (1), XPS (1), X-ray single crystal structural analysis (1) | 3 | |
|---|
| Y | Yeast (1), Yeast cells (1), yeast extract (1), Yield stress (1) | 4 | |
|---|
| Z | zeolite (9), ZIF-8 (2), zeta potential (2), Zinc oxide (2), Zeolites (1), ZrO2 porous sphere (1) , etc | 26 | |
|---|
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