[Study of the Relationship between Oral Diseases and Depression Symptoms in Middle-Aged and Older Adult Populations in China-A Retrospective Study Based on CHARLS Data].

Objective: To study the relationship between oral disease and depressive symptoms in middle-aged and older adult populations in China.

Methods: The data from the China Health and Retirement Longitudinal Study (CHARLS) done between 2013 and 2015 were analyzed. A total of 3828 middle-aged and older adults showing no depressive symptoms in an assessment with the 10-item Centre for Epidemiological Studies Depression Scale (CES-D-10) were selected as the subjects of observation, and oral disease was taken as the dependent variable.

The antifungal efficacy of nano-metals supported TiO₂ and ozone on the resistant Aspergillus niger spore.

Recently, antimicrobial efficacy of nano-metals has been extensively investigated. However, most of the related studies focused on the bactericidal effectiveness. Molds, especially their spores, are more resistant than bacteria, and can build a high concentration in houses due to dampness.

Increase of urinary concentrations of 8-hydroxy-2'-deoxyguanosine in diesel exhaust emission inspector exposed to polycyclic aromatic hydrocarbons.

Purpose: The objectives of this study were to explore the factors influencing urinary 8-hydroxy-2'-deoxyguanosine (8-OHdG) levels in diesel engine exhaust emission inspectors (inspectors), the association between polycyclic aromatic hydrocarbons (PAHs) exposure and fine particulate matter (PM(2.5)) levels in diesel exhaust particles (DEPs), and the PAHs exposure levels in diesel vehicle emission inspection stations (inspection stations).

Methods: Twenty-eight inspectors and a control group of thirty-eight individuals matched by age and gender were recruited for this study.

Enhancement effect of relative humidity on the formation and regional respiratory deposition of secondary organic aerosol.

In this study, we investigated the effect of relative humidity (RH) on the formation of secondary organic aerosol (SOA) generated from the ozonolysis of d-limonene in an environmental chamber. The mass yield and the number concentration of SOA increased seven and eight times, respectively, when the RH increased from 18% to 82%. The measured total loss rates (apparent loss rates) of the number and mass concentration of SOA in the chamber ranged from 1.