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https://www.selleckchem.com/products/Nolvadex.html Background Polychlorinated biphenyls (PCBs) were used in electrical equipment and a range of construction materials. Although banned in the United States and most of Europe in the 1970s, they are highly persistent in the environment and bioaccumulate. Whether PCBs are associated with liver cancer risk at general population levels is unknown. Methods This study consisted of 136 incident liver cancer cases and 408 matched controls from the Kaiser Permanente Northern California Multiphasic Health Checkup (MHC) cohort and 84 cases and 252 matched controls from the Norwegian Janus cohort. Sera collected in the 1960s-1980s were measured for 37 PCB congeners and markers of hepatitis B (HBV) and C (HCV) infection. Odds ratios (OR) and 95% confidence intervals (CI) for tertiles of each lipid-adjusted PCB were estimated from conditional logistic regression. We also examined the molar sum of congeners in groups total PCBs; low, medium, and high chlorination; and Wolff functional groups. Results Concentrations of individnumber of PCB congeners and increased odds of liver cancer among MHC, but not Janus, participants with sera from the 1960s/1970s.The construction of nuclear power plants in China has proceeded rapidly in recent years, and a nuclear power plant cluster is present in the coastal area of Fujian Province. Considering the lessons of the Fukushima Daiichi nuclear power plant accident, we applied the Monte Carlo approach to calculate the correlation characteristics of earthquake impacts on the nuclear power plant cluster and to assess the seismic hazards at multiple sites. Based on the seismic source zone model, seismicity model and ground-motion prediction model of the Seismic Ground Motion Parameters Zonation Map of China, many earthquake scenarios were sampled, and the possibility of multiple sites experiencing ground motions that exceed critical values at the same time were obtained. The results show that the corre

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