Personal exposure to PM associated with heavy metals in four travel modes of Tianjin during the summer season.

Personal exposure to PM associated with heavy metals were investigated at and around the same road by cycling, walking, taxi and bus in Tianjin, China. One trip on each mode was undertaken during 4 h of both morning and evening peak hours. Results of one-way analysis of variance (ANOVA) to compare mean concentrations of PM and each metal measured by four modes, the enrichment level of heavy metals in four modes and the carcinogenic, non-carcinogenic risk and probabilistic estimation of health risks of metals (Cr, Ni, Cu, Zn and Pb).

Concentrations, properties, and health risk of PM in the Tianjin City subway system.

A campaign was conducted to assess and compare the personal exposure in L3 of Tianjin subway, focusing on PM levels, chemical compositions, morphology analysis, as well as the health risk of heavy metal in PM. The results indicated that the average concentration of the PM was 151.43 μg/m inside the train of the subway during rush hours.

Enhanced anti-tumor efficacy of aspirin combined with triptolide in cervical cancer cells.

Background: The non-steroidal anti-inflammatory drug (NSAID) aspirin (acetylsalicylic acid) is an inhibitor of cyclooxygenase enzymes. Recent studies have shown that aspirin could be used as an anti-tumor drug. Triptolide, the major compound extracted from the Chinese herb Tripteryglum wilfordii Hook.