• Occurrence and impacts of hollow space under a continuously reinforced concrete pavement

• Occurrence and damage analysis of a new rice dwarf disease caused by Southern rice black-streaked dwarf virus

• Occupational health risks associated with the use of germicides in health care

• Oct4基因转染对人牙髓细胞增殖和多向分化能力的影响

• Occupational exposure to pesticides and endotoxin and Parkinson disease in the Netherlands.

• Occurrence and distribution of viruses and picoplankton in tropical freshwater bodies determined by flow cytometry

• Ocular hypertension suppresses homeostatic gene expression in optic nerve head microglia of DBA/2 J mice

• Occurrence and quantification of culturable and viable but non-culturable (VBNC) pathogens in biofilm on different pipes from a metropolitan drinking water distribution system

• Occurrence and fate of microplastics from wastewater treatment plants assessed by a fluorescence-based protocol

• Ocular biological parameters and prevalence of myopia in vocational high school and general high school in China

• Occurrence and mass loads of N-nitrosamines discharged from different anthropogenic activities in Desheng River, South China

• Occurrence, bioavailability, and environmental risk of heavy metals and metalloids in the sediment and drawdown area of fengshuba drinking water reservoir

• Occluded Facial Pain Assessment in the ICU Using Action Units Guided Network

• Ochratoxin A and zearalenone in poultry feed samples from South China

• Occurrence, Antibiotic Susceptibility, Biofilm Formation and Molecular Characterization of Staphylococcus aureus Isolated from Raw Shrimp in China