DFT calculations O Apoptosis InSAR CO Eigenvalue problem Lower bound China Definitive Host Fault detection Machine learning Nonconforming finite element Reaction mechanism Sorption Synthesis performance 3-D displacements Activation Adsorption Biharmonic equation Biodegradable Breast cancer Cantor set Co(II) Conforming finite element Cyst Wall Deep neural network Discrete nonlinear system Eigenvalue Event-triggered mechanism