| Index | Example of keywords | Number |
|---|
| 0-9 | 3D bioprinting (1), 2D material (1), 2 step deposition (1) | 3 |  |
|---|
| A | adsorption (10), ammonia (7), AI (5), Aerosol (5), Antibody production (3), Artificial transactivator (3) , etc | 139 | |
|---|
| B | Block copolymer (4), Biomass (3), Bayesian optimization (3), Blockchain (3), Biorefinery (3), biosensor (3) , etc | 81 | |
|---|
| C-CH | carbon dioxide (8), CCUS (7), Catalyst (6), Carbon Capture (5), CFD (4), carbon neutral (3) , etc | 139 | |
|---|
| CI-CZ | CO2 capture (7), CO2 (7), CO2 reduction (6), crystallization (6), circular economy (5), CO2 utilization (4) , etc | 139 | |
|---|
| D | Direct air capture (6), DX (5), deep eutectic solvent (4), degradation (4), Discrete Element Method (3), digital transformation (3) , etc | 128 | |
|---|
| E | extraction (8), emulsion (4), Energy-saving (4), Escherichia coli (3), electrodialysis (3), Esterification (2) , etc | 100 | |
|---|
| F | Fuel cell (5), fouling (4), Fine bubbles (2), formate (2), fluidized bed (2), Flow chemistry (2) , etc | 75 | |
|---|
| G | Graphene oxide (4), Gas separation (3), graphene (3), gasification (2), graphite (2), Gas absorption (2) , etc | 51 | |
|---|
| H | hydrogen (11), Hydrogen Production (6), Hydrogen storage (4), hydrothermal treatment (3), Heat transfer (3), hydrogel (3) , etc | 109 | |
|---|
| I | Interfacial polymerization (5), Ionic Liquid (4), Image analysis (2), Industrial waste (2), immobilized catalyst (2), Innovation (2) , etc | 73 | |
|---|
| J | jet (1), jet mill (1) | 2 | |
|---|
| K | Kinetic model (2), Kinetic Model Analysis (1), Korteweg force (1), kinetic analysis (1), Knoevenagel condensation (1), kLa (1) , etc | 9 | |
|---|
| L | liposome (4), Life cycle assessment (3), lipase (2), Liver (2), liquefaction (2), Liquid Crystal (2) , etc | 61 | |
|---|
| M-MH | machine learning (22), membrane (12), membrane reactor (5), Methanation (4), Mass transfer (4), metal-organic framework (4) , etc | 134 | |
|---|
| MI-MZ | Mixing (8), molecular dynamics (7), Mineral carbonation (4), Morphology (4), Microcapsule (4), Molecularly Imprinted Polymers (3) , etc | 102 | |
|---|
| N | numerical simulation (7), Nanofiltration (4), Nanoparticle (3), Natural gas (2), Nanogel (2), nickel oxide (1) , etc | 79 | |
|---|
| O | Oxidation (3), oxygen evolution reaction (3), Organic solvent nanofiltration (2), Organic solvent separation (2), OpenFOAM (2), Organoclay (2) , etc | 53 | |
|---|
| P-PH | Phase transition (3), Pervaporation (2), peptide (2), Particle suspension (2), phase separation (2), photocatalyst (2) , etc | 75 | |
|---|
| PI-PZ | protein (5), PSE (5), Polymer (4), Polymer Electrolyte Fuel Cell (4), Polydiacetylene (2), Polymerization (2) , etc | 144 | |
|---|
| Q | Quaternary NiFeCoV Sulfides (1), quantum dots (1), Quantum Mechanics / Molecular Dynamics (1), quality management (1), quantum chemistry calculation (1) | 5 | |
|---|
| R | Renewable Energy (4), Recycle (4), Reactive crystallization (3), reverse osmosis (3), rheology (3), Recycling (3) , etc | 75 | |
|---|
| S-SO | Saleseforce (3), self-assembly (3), Seawater electrolysis (2), Solubility (2), Shear stress (2), Seawater Splitting (2) , etc | 114 | |
|---|
| SP-SZ | Supercritical carbon dioxide (6), Structured catalyst (6), Startup (3), Surface modification (2), subcritical water (2), Suspension culture (2) , etc | 77 | |
|---|
| T | The SCEJ Award for Outstanding Young Researcher (4), The SCEJ Award for Outstanding Research Achievement (3), Transdermal delivery (3), tableting (2), The SCEJ Award for Outstanding Technological Development (2), Therapeutic Drug Monitoring (2) , etc | 80 | |
|---|
| U | Ultrasound (3), ultrafiltration (2), uroflowmetry (1), Ultrafine bubble (1), upgrading (1), Underground heat (1) , etc | 14 | |
|---|
| V | vapor phase transport (2), Vitronectin (1), virus-like particle (1), vacuum ultraviolet (1), viscous fingering (1), Virus like particle (1) , etc | 20 | |
|---|
| W | Wastewater treatment (4), waste (4), Waste concrete (2), Water electrolysis (2), water harvesting (2), wet turmeric (1) , etc | 29 | |
|---|
| X | Xanthophyllomyces dendrorhous (1), X-ray Absorption Fine Structure (1), x-ray (1) | 3 | |
|---|
| Y | yeast (2), Yttria-stabilized Zirconia (1), yeast cell wall protein (1), yeast surface display (1) | 5 | |
|---|
| Z | zeolite (6), Zeolite membrane (3), zwitterionic polymer (1), zeolite-encapsulated metal catalyst (1), ZSM-5 (1), zeolite catalysts (1) , etc | 16 | |
|---|
| Non alphanum. | * (27), <i>Chlamydomonas reinhardtii</i> (1) | 28 | |
|---|
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easp 2.47; update.pl 2.37 (C)1999-2015 kawase