PCDD/Fs Thermal desorption CO PCBs Soil remediation 1,2-dichlorobenzene Apoptosis Catalytic oxidation Combinatorial optimization Correlation Dechlorination Heavy metals COVID-19 Deep learning Dioxin Extreme learning machine Fly ash Hepatic fibrosis MSW incineration Nanoindentation Test Prognosis TiO /TiO Ammonia synthesis Anthropomorphism Aragonite Carbon fiber Carbon fibers Carbon nanotubes Catalytic activity