Enzymes 179 Analysis 174 Mathematical models 42 Mathematics 39 Chemistry, Organic 31 Synthesis 29 Data processing 25 History 23 Environmental aspects 22 Microbiology 19 Technique 18 Mathematical optimization 17 Polymers and polymerization 17 Polymers 16 Climatic changes 15 Mathematical physics 15 Quantum theory 15 Membranes (Biology) 14 Probabilities 14 Differential equations 13 Ecology 13 Nuclear magnetic resonance spectroscopy 13 Pollution 13 Proteins 13 Solids 13 Statistical methods 13 Biological chemistry 12 Chemistry, Physical and theoretical 12 Collected works 12 Differential equations, Partial 12